drivers/net/niu.c

   1 /* niu.c: Neptune ethernet driver.
   2  *
   3  * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
   4  */
   5
   6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   7
   8 #include <linux/module.h>
   9 #include <linux/init.h>
  10 #include <linux/interrupt.h>
  11 #include <linux/pci.h>
  12 #include <linux/dma-mapping.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/ethtool.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/delay.h>
  18 #include <linux/bitops.h>
  19 #include <linux/mii.h>
  20 #include <linux/if_ether.h>
  21 #include <linux/if_vlan.h>
  22 #include <linux/ip.h>
  23 #include <linux/in.h>
  24 #include <linux/ipv6.h>
  25 #include <linux/log2.h>
  26 #include <linux/jiffies.h>
  27 #include <linux/crc32.h>
  28 #include <linux/list.h>
  29 #include <linux/slab.h>
  30
  31 #include <linux/io.h>
  32 #include <linux/of_device.h>
  33
  34 #include "niu.h"
  35
  36 #define DRV_MODULE_NAME         "niu"
  37 #define DRV_MODULE_VERSION      "1.1"
  38 #define DRV_MODULE_RELDATE      "Apr 22, 2010"
  39
  40 static char version[] __devinitdata =
  41         DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  42
  43 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
  44 MODULE_DESCRIPTION("NIU ethernet driver");
  45 MODULE_LICENSE("GPL");
  46 MODULE_VERSION(DRV_MODULE_VERSION);
  47
  48 #ifndef readq
  49 static u64 readq(void __iomem *reg)
  50 {
  51         return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
  52 }
  53
  54 static void writeq(u64 val, void __iomem *reg)
  55 {
  56         writel(val & 0xffffffff, reg);
  57         writel(val >> 32, reg + 0x4UL);
  58 }
  59 #endif
  60
  61 static DEFINE_PCI_DEVICE_TABLE(niu_pci_tbl) = {
  62         {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
  63         {}
  64 };
  65
  66 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
  67
  68 #define NIU_TX_TIMEOUT                  (5 * HZ)
  69
  70 #define nr64(reg)               readq(np->regs + (reg))
  71 #define nw64(reg, val)          writeq((val), np->regs + (reg))
  72
  73 #define nr64_mac(reg)           readq(np->mac_regs + (reg))
  74 #define nw64_mac(reg, val)      writeq((val), np->mac_regs + (reg))
  75
  76 #define nr64_ipp(reg)           readq(np->regs + np->ipp_off + (reg))
  77 #define nw64_ipp(reg, val)      writeq((val), np->regs + np->ipp_off + (reg))
  78
  79 #define nr64_pcs(reg)           readq(np->regs + np->pcs_off + (reg))
  80 #define nw64_pcs(reg, val)      writeq((val), np->regs + np->pcs_off + (reg))
  81
  82 #define nr64_xpcs(reg)          readq(np->regs + np->xpcs_off + (reg))
  83 #define nw64_xpcs(reg, val)     writeq((val), np->regs + np->xpcs_off + (reg))
  84
  85 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
  86
  87 static int niu_debug;
  88 static int debug = -1;
  89 module_param(debug, int, 0);
  90 MODULE_PARM_DESC(debug, "NIU debug level");
  91
  92 #define niu_lock_parent(np, flags) \
  93         spin_lock_irqsave(&np->parent->lock, flags)
  94 #define niu_unlock_parent(np, flags) \
  95         spin_unlock_irqrestore(&np->parent->lock, flags)
  96
  97 static int serdes_init_10g_serdes(struct niu *np);
  98
  99 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
 100                                      u64 bits, int limit, int delay)
 101 {
 102         while (--limit >= 0) {
 103                 u64 val = nr64_mac(reg);
 104
 105                 if (!(val & bits))
 106                         break;
 107                 udelay(delay);
 108         }
 109         if (limit < 0)
 110                 return -ENODEV;
 111         return 0;
 112 }
 113
 114 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
 115                                         u64 bits, int limit, int delay,
 116                                         const char *reg_name)
 117 {
 118         int err;
 119
 120         nw64_mac(reg, bits);
 121         err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
 122         if (err)
 123                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 124                            (unsigned long long)bits, reg_name,
 125                            (unsigned long long)nr64_mac(reg));
 126         return err;
 127 }
 128
 129 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 130 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 131         __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 132 })
 133
 134 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
 135                                      u64 bits, int limit, int delay)
 136 {
 137         while (--limit >= 0) {
 138                 u64 val = nr64_ipp(reg);
 139
 140                 if (!(val & bits))
 141                         break;
 142                 udelay(delay);
 143         }
 144         if (limit < 0)
 145                 return -ENODEV;
 146         return 0;
 147 }
 148
 149 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
 150                                         u64 bits, int limit, int delay,
 151                                         const char *reg_name)
 152 {
 153         int err;
 154         u64 val;
 155
 156         val = nr64_ipp(reg);
 157         val |= bits;
 158         nw64_ipp(reg, val);
 159
 160         err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
 161         if (err)
 162                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 163                            (unsigned long long)bits, reg_name,
 164                            (unsigned long long)nr64_ipp(reg));
 165         return err;
 166 }
 167
 168 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 169 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 170         __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 171 })
 172
 173 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
 174                                  u64 bits, int limit, int delay)
 175 {
 176         while (--limit >= 0) {
 177                 u64 val = nr64(reg);
 178
 179                 if (!(val & bits))
 180                         break;
 181                 udelay(delay);
 182         }
 183         if (limit < 0)
 184                 return -ENODEV;
 185         return 0;
 186 }
 187
 188 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
 189 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 190         __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
 191 })
 192
 193 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
 194                                     u64 bits, int limit, int delay,
 195                                     const char *reg_name)
 196 {
 197         int err;
 198
 199         nw64(reg, bits);
 200         err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
 201         if (err)
 202                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 203                            (unsigned long long)bits, reg_name,
 204                            (unsigned long long)nr64(reg));
 205         return err;
 206 }
 207
 208 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 209 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 210         __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 211 })
 212
 213 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
 214 {
 215         u64 val = (u64) lp->timer;
 216
 217         if (on)
 218                 val |= LDG_IMGMT_ARM;
 219
 220         nw64(LDG_IMGMT(lp->ldg_num), val);
 221 }
 222
 223 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
 224 {
 225         unsigned long mask_reg, bits;
 226         u64 val;
 227
 228         if (ldn < 0 || ldn > LDN_MAX)
 229                 return -EINVAL;
 230
 231         if (ldn < 64) {
 232                 mask_reg = LD_IM0(ldn);
 233                 bits = LD_IM0_MASK;
 234         } else {
 235                 mask_reg = LD_IM1(ldn - 64);
 236                 bits = LD_IM1_MASK;
 237         }
 238
 239         val = nr64(mask_reg);
 240         if (on)
 241                 val &= ~bits;
 242         else
 243                 val |= bits;
 244         nw64(mask_reg, val);
 245
 246         return 0;
 247 }
 248
 249 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
 250 {
 251         struct niu_parent *parent = np->parent;
 252         int i;
 253
 254         for (i = 0; i <= LDN_MAX; i++) {
 255                 int err;
 256
 257                 if (parent->ldg_map[i] != lp->ldg_num)
 258                         continue;
 259
 260                 err = niu_ldn_irq_enable(np, i, on);
 261                 if (err)
 262                         return err;
 263         }
 264         return 0;
 265 }
 266
 267 static int niu_enable_interrupts(struct niu *np, int on)
 268 {
 269         int i;
 270
 271         for (i = 0; i < np->num_ldg; i++) {
 272                 struct niu_ldg *lp = &np->ldg[i];
 273                 int err;
 274
 275                 err = niu_enable_ldn_in_ldg(np, lp, on);
 276                 if (err)
 277                         return err;
 278         }
 279         for (i = 0; i < np->num_ldg; i++)
 280                 niu_ldg_rearm(np, &np->ldg[i], on);
 281
 282         return 0;
 283 }
 284
 285 static u32 phy_encode(u32 type, int port)
 286 {
 287         return type << (port * 2);
 288 }
 289
 290 static u32 phy_decode(u32 val, int port)
 291 {
 292         return (val >> (port * 2)) & PORT_TYPE_MASK;
 293 }
 294
 295 static int mdio_wait(struct niu *np)
 296 {
 297         int limit = 1000;
 298         u64 val;
 299
 300         while (--limit > 0) {
 301                 val = nr64(MIF_FRAME_OUTPUT);
 302                 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
 303                         return val & MIF_FRAME_OUTPUT_DATA;
 304
 305                 udelay(10);
 306         }
 307
 308         return -ENODEV;
 309 }
 310
 311 static int mdio_read(struct niu *np, int port, int dev, int reg)
 312 {
 313         int err;
 314
 315         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
 316         err = mdio_wait(np);
 317         if (err < 0)
 318                 return err;
 319
 320         nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
 321         return mdio_wait(np);
 322 }
 323
 324 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
 325 {
 326         int err;
 327
 328         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
 329         err = mdio_wait(np);
 330         if (err < 0)
 331                 return err;
 332
 333         nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
 334         err = mdio_wait(np);
 335         if (err < 0)
 336                 return err;
 337
 338         return 0;
 339 }
 340
 341 static int mii_read(struct niu *np, int port, int reg)
 342 {
 343         nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
 344         return mdio_wait(np);
 345 }
 346
 347 static int mii_write(struct niu *np, int port, int reg, int data)
 348 {
 349         int err;
 350
 351         nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
 352         err = mdio_wait(np);
 353         if (err < 0)
 354                 return err;
 355
 356         return 0;
 357 }
 358
 359 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
 360 {
 361         int err;
 362
 363         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 364                          ESR2_TI_PLL_TX_CFG_L(channel),
 365                          val & 0xffff);
 366         if (!err)
 367                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 368                                  ESR2_TI_PLL_TX_CFG_H(channel),
 369                                  val >> 16);
 370         return err;
 371 }
 372
 373 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
 374 {
 375         int err;
 376
 377         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 378                          ESR2_TI_PLL_RX_CFG_L(channel),
 379                          val & 0xffff);
 380         if (!err)
 381                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 382                                  ESR2_TI_PLL_RX_CFG_H(channel),
 383                                  val >> 16);
 384         return err;
 385 }
 386
 387 /* Mode is always 10G fiber.  */
 388 static int serdes_init_niu_10g_fiber(struct niu *np)
 389 {
 390         struct niu_link_config *lp = &np->link_config;
 391         u32 tx_cfg, rx_cfg;
 392         unsigned long i;
 393
 394         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
 395         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 396                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 397                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
 398
 399         if (lp->loopback_mode == LOOPBACK_PHY) {
 400                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 401
 402                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 403                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 404
 405                 tx_cfg |= PLL_TX_CFG_ENTEST;
 406                 rx_cfg |= PLL_RX_CFG_ENTEST;
 407         }
 408
 409         /* Initialize all 4 lanes of the SERDES.  */
 410         for (i = 0; i < 4; i++) {
 411                 int err = esr2_set_tx_cfg(np, i, tx_cfg);
 412                 if (err)
 413                         return err;
 414         }
 415
 416         for (i = 0; i < 4; i++) {
 417                 int err = esr2_set_rx_cfg(np, i, rx_cfg);
 418                 if (err)
 419                         return err;
 420         }
 421
 422         return 0;
 423 }
 424
 425 static int serdes_init_niu_1g_serdes(struct niu *np)
 426 {
 427         struct niu_link_config *lp = &np->link_config;
 428         u16 pll_cfg, pll_sts;
 429         int max_retry = 100;
 430         u64 uninitialized_var(sig), mask, val;
 431         u32 tx_cfg, rx_cfg;
 432         unsigned long i;
 433         int err;
 434
 435         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
 436                   PLL_TX_CFG_RATE_HALF);
 437         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 438                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 439                   PLL_RX_CFG_RATE_HALF);
 440
 441         if (np->port == 0)
 442                 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
 443
 444         if (lp->loopback_mode == LOOPBACK_PHY) {
 445                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 446
 447                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 448                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 449
 450                 tx_cfg |= PLL_TX_CFG_ENTEST;
 451                 rx_cfg |= PLL_RX_CFG_ENTEST;
 452         }
 453
 454         /* Initialize PLL for 1G */
 455         pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
 456
 457         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 458                          ESR2_TI_PLL_CFG_L, pll_cfg);
 459         if (err) {
 460                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
 461                            np->port, __func__);
 462                 return err;
 463         }
 464
 465         pll_sts = PLL_CFG_ENPLL;
 466
 467         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 468                          ESR2_TI_PLL_STS_L, pll_sts);
 469         if (err) {
 470                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
 471                            np->port, __func__);
 472                 return err;
 473         }
 474
 475         udelay(200);
 476
 477         /* Initialize all 4 lanes of the SERDES.  */
 478         for (i = 0; i < 4; i++) {
 479                 err = esr2_set_tx_cfg(np, i, tx_cfg);
 480                 if (err)
 481                         return err;
 482         }
 483
 484         for (i = 0; i < 4; i++) {
 485                 err = esr2_set_rx_cfg(np, i, rx_cfg);
 486                 if (err)
 487                         return err;
 488         }
 489
 490         switch (np->port) {
 491         case 0:
 492                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
 493                 mask = val;
 494                 break;
 495
 496         case 1:
 497                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
 498                 mask = val;
 499                 break;
 500
 501         default:
 502                 return -EINVAL;
 503         }
 504
 505         while (max_retry--) {
 506                 sig = nr64(ESR_INT_SIGNALS);
 507                 if ((sig & mask) == val)
 508                         break;
 509
 510                 mdelay(500);
 511         }
 512
 513         if ((sig & mask) != val) {
 514                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
 515                            np->port, (int)(sig & mask), (int)val);
 516                 return -ENODEV;
 517         }
 518
 519         return 0;
 520 }
 521
 522 static int serdes_init_niu_10g_serdes(struct niu *np)
 523 {
 524         struct niu_link_config *lp = &np->link_config;
 525         u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
 526         int max_retry = 100;
 527         u64 uninitialized_var(sig), mask, val;
 528         unsigned long i;
 529         int err;
 530
 531         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
 532         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 533                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 534                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
 535
 536         if (lp->loopback_mode == LOOPBACK_PHY) {
 537                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 538
 539                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 540                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 541
 542                 tx_cfg |= PLL_TX_CFG_ENTEST;
 543                 rx_cfg |= PLL_RX_CFG_ENTEST;
 544         }
 545
 546         /* Initialize PLL for 10G */
 547         pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
 548
 549         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 550                          ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
 551         if (err) {
 552                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
 553                            np->port, __func__);
 554                 return err;
 555         }
 556
 557         pll_sts = PLL_CFG_ENPLL;
 558
 559         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 560                          ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
 561         if (err) {
 562                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
 563                            np->port, __func__);
 564                 return err;
 565         }
 566
 567         udelay(200);
 568
 569         /* Initialize all 4 lanes of the SERDES.  */
 570         for (i = 0; i < 4; i++) {
 571                 err = esr2_set_tx_cfg(np, i, tx_cfg);
 572                 if (err)
 573                         return err;
 574         }
 575
 576         for (i = 0; i < 4; i++) {
 577                 err = esr2_set_rx_cfg(np, i, rx_cfg);
 578                 if (err)
 579                         return err;
 580         }
 581
 582         /* check if serdes is ready */
 583
 584         switch (np->port) {
 585         case 0:
 586                 mask = ESR_INT_SIGNALS_P0_BITS;
 587                 val = (ESR_INT_SRDY0_P0 |
 588                        ESR_INT_DET0_P0 |
 589                        ESR_INT_XSRDY_P0 |
 590                        ESR_INT_XDP_P0_CH3 |
 591                        ESR_INT_XDP_P0_CH2 |
 592                        ESR_INT_XDP_P0_CH1 |
 593                        ESR_INT_XDP_P0_CH0);
 594                 break;
 595
 596         case 1:
 597                 mask = ESR_INT_SIGNALS_P1_BITS;
 598                 val = (ESR_INT_SRDY0_P1 |
 599                        ESR_INT_DET0_P1 |
 600                        ESR_INT_XSRDY_P1 |
 601                        ESR_INT_XDP_P1_CH3 |
 602                        ESR_INT_XDP_P1_CH2 |
 603                        ESR_INT_XDP_P1_CH1 |
 604                        ESR_INT_XDP_P1_CH0);
 605                 break;
 606
 607         default:
 608                 return -EINVAL;
 609         }
 610
 611         while (max_retry--) {
 612                 sig = nr64(ESR_INT_SIGNALS);
 613                 if ((sig & mask) == val)
 614                         break;
 615
 616                 mdelay(500);
 617         }
 618
 619         if ((sig & mask) != val) {
 620                 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
 621                         np->port, (int)(sig & mask), (int)val);
 622
 623                 /* 10G failed, try initializing at 1G */
 624                 err = serdes_init_niu_1g_serdes(np);
 625                 if (!err) {
 626                         np->flags &= ~NIU_FLAGS_10G;
 627                         np->mac_xcvr = MAC_XCVR_PCS;
 628                 }  else {
 629                         netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
 630                                    np->port);
 631                         return -ENODEV;
 632                 }
 633         }
 634         return 0;
 635 }
 636
 637 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
 638 {
 639         int err;
 640
 641         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
 642         if (err >= 0) {
 643                 *val = (err & 0xffff);
 644                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 645                                 ESR_RXTX_CTRL_H(chan));
 646                 if (err >= 0)
 647                         *val |= ((err & 0xffff) << 16);
 648                 err = 0;
 649         }
 650         return err;
 651 }
 652
 653 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
 654 {
 655         int err;
 656
 657         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 658                         ESR_GLUE_CTRL0_L(chan));
 659         if (err >= 0) {
 660                 *val = (err & 0xffff);
 661                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 662                                 ESR_GLUE_CTRL0_H(chan));
 663                 if (err >= 0) {
 664                         *val |= ((err & 0xffff) << 16);
 665                         err = 0;
 666                 }
 667         }
 668         return err;
 669 }
 670
 671 static int esr_read_reset(struct niu *np, u32 *val)
 672 {
 673         int err;
 674
 675         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 676                         ESR_RXTX_RESET_CTRL_L);
 677         if (err >= 0) {
 678                 *val = (err & 0xffff);
 679                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 680                                 ESR_RXTX_RESET_CTRL_H);
 681                 if (err >= 0) {
 682                         *val |= ((err & 0xffff) << 16);
 683                         err = 0;
 684                 }
 685         }
 686         return err;
 687 }
 688
 689 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
 690 {
 691         int err;
 692
 693         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 694                          ESR_RXTX_CTRL_L(chan), val & 0xffff);
 695         if (!err)
 696                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 697                                  ESR_RXTX_CTRL_H(chan), (val >> 16));
 698         return err;
 699 }
 700
 701 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
 702 {
 703         int err;
 704
 705         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 706                         ESR_GLUE_CTRL0_L(chan), val & 0xffff);
 707         if (!err)
 708                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 709                                  ESR_GLUE_CTRL0_H(chan), (val >> 16));
 710         return err;
 711 }
 712
 713 static int esr_reset(struct niu *np)
 714 {
 715         u32 uninitialized_var(reset);
 716         int err;
 717
 718         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 719                          ESR_RXTX_RESET_CTRL_L, 0x0000);
 720         if (err)
 721                 return err;
 722         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 723                          ESR_RXTX_RESET_CTRL_H, 0xffff);
 724         if (err)
 725                 return err;
 726         udelay(200);
 727
 728         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 729                          ESR_RXTX_RESET_CTRL_L, 0xffff);
 730         if (err)
 731                 return err;
 732         udelay(200);
 733
 734         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 735                          ESR_RXTX_RESET_CTRL_H, 0x0000);
 736         if (err)
 737                 return err;
 738         udelay(200);
 739
 740         err = esr_read_reset(np, &reset);
 741         if (err)
 742                 return err;
 743         if (reset != 0) {
 744                 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
 745                            np->port, reset);
 746                 return -ENODEV;
 747         }
 748
 749         return 0;
 750 }
 751
 752 static int serdes_init_10g(struct niu *np)
 753 {
 754         struct niu_link_config *lp = &np->link_config;
 755         unsigned long ctrl_reg, test_cfg_reg, i;
 756         u64 ctrl_val, test_cfg_val, sig, mask, val;
 757         int err;
 758
 759         switch (np->port) {
 760         case 0:
 761                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
 762                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
 763                 break;
 764         case 1:
 765                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
 766                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
 767                 break;
 768
 769         default:
 770                 return -EINVAL;
 771         }
 772         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
 773                     ENET_SERDES_CTRL_SDET_1 |
 774                     ENET_SERDES_CTRL_SDET_2 |
 775                     ENET_SERDES_CTRL_SDET_3 |
 776                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
 777                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
 778                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
 779                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
 780                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
 781                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
 782                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
 783                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
 784         test_cfg_val = 0;
 785
 786         if (lp->loopback_mode == LOOPBACK_PHY) {
 787                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
 788                                   ENET_SERDES_TEST_MD_0_SHIFT) |
 789                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 790                                   ENET_SERDES_TEST_MD_1_SHIFT) |
 791                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 792                                   ENET_SERDES_TEST_MD_2_SHIFT) |
 793                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 794                                   ENET_SERDES_TEST_MD_3_SHIFT));
 795         }
 796
 797         nw64(ctrl_reg, ctrl_val);
 798         nw64(test_cfg_reg, test_cfg_val);
 799
 800         /* Initialize all 4 lanes of the SERDES.  */
 801         for (i = 0; i < 4; i++) {
 802                 u32 rxtx_ctrl, glue0;
 803
 804                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
 805                 if (err)
 806                         return err;
 807                 err = esr_read_glue0(np, i, &glue0);
 808                 if (err)
 809                         return err;
 810
 811                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
 812                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
 813                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
 814
 815                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
 816                            ESR_GLUE_CTRL0_THCNT |
 817                            ESR_GLUE_CTRL0_BLTIME);
 818                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
 819                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
 820                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
 821                           (BLTIME_300_CYCLES <<
 822                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
 823
 824                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
 825                 if (err)
 826                         return err;
 827                 err = esr_write_glue0(np, i, glue0);
 828                 if (err)
 829                         return err;
 830         }
 831
 832         err = esr_reset(np);
 833         if (err)
 834                 return err;
 835
 836         sig = nr64(ESR_INT_SIGNALS);
 837         switch (np->port) {
 838         case 0:
 839                 mask = ESR_INT_SIGNALS_P0_BITS;
 840                 val = (ESR_INT_SRDY0_P0 |
 841                        ESR_INT_DET0_P0 |
 842                        ESR_INT_XSRDY_P0 |
 843                        ESR_INT_XDP_P0_CH3 |
 844                        ESR_INT_XDP_P0_CH2 |
 845                        ESR_INT_XDP_P0_CH1 |
 846                        ESR_INT_XDP_P0_CH0);
 847                 break;
 848
 849         case 1:
 850                 mask = ESR_INT_SIGNALS_P1_BITS;
 851                 val = (ESR_INT_SRDY0_P1 |
 852                        ESR_INT_DET0_P1 |
 853                        ESR_INT_XSRDY_P1 |
 854                        ESR_INT_XDP_P1_CH3 |
 855                        ESR_INT_XDP_P1_CH2 |
 856                        ESR_INT_XDP_P1_CH1 |
 857                        ESR_INT_XDP_P1_CH0);
 858                 break;
 859
 860         default:
 861                 return -EINVAL;
 862         }
 863
 864         if ((sig & mask) != val) {
 865                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
 866                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
 867                         return 0;
 868                 }
 869                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
 870                            np->port, (int)(sig & mask), (int)val);
 871                 return -ENODEV;
 872         }
 873         if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
 874                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
 875         return 0;
 876 }
 877
 878 static int serdes_init_1g(struct niu *np)
 879 {
 880         u64 val;
 881
 882         val = nr64(ENET_SERDES_1_PLL_CFG);
 883         val &= ~ENET_SERDES_PLL_FBDIV2;
 884         switch (np->port) {
 885         case 0:
 886                 val |= ENET_SERDES_PLL_HRATE0;
 887                 break;
 888         case 1:
 889                 val |= ENET_SERDES_PLL_HRATE1;
 890                 break;
 891         case 2:
 892                 val |= ENET_SERDES_PLL_HRATE2;
 893                 break;
 894         case 3:
 895                 val |= ENET_SERDES_PLL_HRATE3;
 896                 break;
 897         default:
 898                 return -EINVAL;
 899         }
 900         nw64(ENET_SERDES_1_PLL_CFG, val);
 901
 902         return 0;
 903 }
 904
 905 static int serdes_init_1g_serdes(struct niu *np)
 906 {
 907         struct niu_link_config *lp = &np->link_config;
 908         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
 909         u64 ctrl_val, test_cfg_val, sig, mask, val;
 910         int err;
 911         u64 reset_val, val_rd;
 912
 913         val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
 914                 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
 915                 ENET_SERDES_PLL_FBDIV0;
 916         switch (np->port) {
 917         case 0:
 918                 reset_val =  ENET_SERDES_RESET_0;
 919                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
 920                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
 921                 pll_cfg = ENET_SERDES_0_PLL_CFG;
 922                 break;
 923         case 1:
 924                 reset_val =  ENET_SERDES_RESET_1;
 925                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
 926                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
 927                 pll_cfg = ENET_SERDES_1_PLL_CFG;
 928                 break;
 929
 930         default:
 931                 return -EINVAL;
 932         }
 933         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
 934                     ENET_SERDES_CTRL_SDET_1 |
 935                     ENET_SERDES_CTRL_SDET_2 |
 936                     ENET_SERDES_CTRL_SDET_3 |
 937                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
 938                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
 939                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
 940                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
 941                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
 942                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
 943                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
 944                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
 945         test_cfg_val = 0;
 946
 947         if (lp->loopback_mode == LOOPBACK_PHY) {
 948                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
 949                                   ENET_SERDES_TEST_MD_0_SHIFT) |
 950                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 951                                   ENET_SERDES_TEST_MD_1_SHIFT) |
 952                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 953                                   ENET_SERDES_TEST_MD_2_SHIFT) |
 954                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 955                                   ENET_SERDES_TEST_MD_3_SHIFT));
 956         }
 957
 958         nw64(ENET_SERDES_RESET, reset_val);
 959         mdelay(20);
 960         val_rd = nr64(ENET_SERDES_RESET);
 961         val_rd &= ~reset_val;
 962         nw64(pll_cfg, val);
 963         nw64(ctrl_reg, ctrl_val);
 964         nw64(test_cfg_reg, test_cfg_val);
 965         nw64(ENET_SERDES_RESET, val_rd);
 966         mdelay(2000);
 967
 968         /* Initialize all 4 lanes of the SERDES.  */
 969         for (i = 0; i < 4; i++) {
 970                 u32 rxtx_ctrl, glue0;
 971
 972                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
 973                 if (err)
 974                         return err;
 975                 err = esr_read_glue0(np, i, &glue0);
 976                 if (err)
 977                         return err;
 978
 979                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
 980                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
 981                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
 982
 983                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
 984                            ESR_GLUE_CTRL0_THCNT |
 985                            ESR_GLUE_CTRL0_BLTIME);
 986                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
 987                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
 988                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
 989                           (BLTIME_300_CYCLES <<
 990                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
 991
 992                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
 993                 if (err)
 994                         return err;
 995                 err = esr_write_glue0(np, i, glue0);
 996                 if (err)
 997                         return err;
 998         }
 999
1000
1001         sig = nr64(ESR_INT_SIGNALS);
1002         switch (np->port) {
1003         case 0:
1004                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1005                 mask = val;
1006                 break;
1007
1008         case 1:
1009                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1010                 mask = val;
1011                 break;
1012
1013         default:
1014                 return -EINVAL;
1015         }
1016
1017         if ((sig & mask) != val) {
1018                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1019                            np->port, (int)(sig & mask), (int)val);
1020                 return -ENODEV;
1021         }
1022
1023         return 0;
1024 }
1025
1026 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1027 {
1028         struct niu_link_config *lp = &np->link_config;
1029         int link_up;
1030         u64 val;
1031         u16 current_speed;
1032         unsigned long flags;
1033         u8 current_duplex;
1034
1035         link_up = 0;
1036         current_speed = SPEED_INVALID;
1037         current_duplex = DUPLEX_INVALID;
1038
1039         spin_lock_irqsave(&np->lock, flags);
1040
1041         val = nr64_pcs(PCS_MII_STAT);
1042
1043         if (val & PCS_MII_STAT_LINK_STATUS) {
1044                 link_up = 1;
1045                 current_speed = SPEED_1000;
1046                 current_duplex = DUPLEX_FULL;
1047         }
1048
1049         lp->active_speed = current_speed;
1050         lp->active_duplex = current_duplex;
1051         spin_unlock_irqrestore(&np->lock, flags);
1052
1053         *link_up_p = link_up;
1054         return 0;
1055 }
1056
1057 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1058 {
1059         unsigned long flags;
1060         struct niu_link_config *lp = &np->link_config;
1061         int link_up = 0;
1062         int link_ok = 1;
1063         u64 val, val2;
1064         u16 current_speed;
1065         u8 current_duplex;
1066
1067         if (!(np->flags & NIU_FLAGS_10G))
1068                 return link_status_1g_serdes(np, link_up_p);
1069
1070         current_speed = SPEED_INVALID;
1071         current_duplex = DUPLEX_INVALID;
1072         spin_lock_irqsave(&np->lock, flags);
1073
1074         val = nr64_xpcs(XPCS_STATUS(0));
1075         val2 = nr64_mac(XMAC_INTER2);
1076         if (val2 & 0x01000000)
1077                 link_ok = 0;
1078
1079         if ((val & 0x1000ULL) && link_ok) {
1080                 link_up = 1;
1081                 current_speed = SPEED_10000;
1082                 current_duplex = DUPLEX_FULL;
1083         }
1084         lp->active_speed = current_speed;
1085         lp->active_duplex = current_duplex;
1086         spin_unlock_irqrestore(&np->lock, flags);
1087         *link_up_p = link_up;
1088         return 0;
1089 }
1090
1091 static int link_status_mii(struct niu *np, int *link_up_p)
1092 {
1093         struct niu_link_config *lp = &np->link_config;
1094         int err;
1095         int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1096         int supported, advertising, active_speed, active_duplex;
1097
1098         err = mii_read(np, np->phy_addr, MII_BMCR);
1099         if (unlikely(err < 0))
1100                 return err;
1101         bmcr = err;
1102
1103         err = mii_read(np, np->phy_addr, MII_BMSR);
1104         if (unlikely(err < 0))
1105                 return err;
1106         bmsr = err;
1107
1108         err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1109         if (unlikely(err < 0))
1110                 return err;
1111         advert = err;
1112
1113         err = mii_read(np, np->phy_addr, MII_LPA);
1114         if (unlikely(err < 0))
1115                 return err;
1116         lpa = err;
1117
1118         if (likely(bmsr & BMSR_ESTATEN)) {
1119                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1120                 if (unlikely(err < 0))
1121                         return err;
1122                 estatus = err;
1123
1124                 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1125                 if (unlikely(err < 0))
1126                         return err;
1127                 ctrl1000 = err;
1128
1129                 err = mii_read(np, np->phy_addr, MII_STAT1000);
1130                 if (unlikely(err < 0))
1131                         return err;
1132                 stat1000 = err;
1133         } else
1134                 estatus = ctrl1000 = stat1000 = 0;
1135
1136         supported = 0;
1137         if (bmsr & BMSR_ANEGCAPABLE)
1138                 supported |= SUPPORTED_Autoneg;
1139         if (bmsr & BMSR_10HALF)
1140                 supported |= SUPPORTED_10baseT_Half;
1141         if (bmsr & BMSR_10FULL)
1142                 supported |= SUPPORTED_10baseT_Full;
1143         if (bmsr & BMSR_100HALF)
1144                 supported |= SUPPORTED_100baseT_Half;
1145         if (bmsr & BMSR_100FULL)
1146                 supported |= SUPPORTED_100baseT_Full;
1147         if (estatus & ESTATUS_1000_THALF)
1148                 supported |= SUPPORTED_1000baseT_Half;
1149         if (estatus & ESTATUS_1000_TFULL)
1150                 supported |= SUPPORTED_1000baseT_Full;
1151         lp->supported = supported;
1152
1153         advertising = 0;
1154         if (advert & ADVERTISE_10HALF)
1155                 advertising |= ADVERTISED_10baseT_Half;
1156         if (advert & ADVERTISE_10FULL)
1157                 advertising |= ADVERTISED_10baseT_Full;
1158         if (advert & ADVERTISE_100HALF)
1159                 advertising |= ADVERTISED_100baseT_Half;
1160         if (advert & ADVERTISE_100FULL)
1161                 advertising |= ADVERTISED_100baseT_Full;
1162         if (ctrl1000 & ADVERTISE_1000HALF)
1163                 advertising |= ADVERTISED_1000baseT_Half;
1164         if (ctrl1000 & ADVERTISE_1000FULL)
1165                 advertising |= ADVERTISED_1000baseT_Full;
1166
1167         if (bmcr & BMCR_ANENABLE) {
1168                 int neg, neg1000;
1169
1170                 lp->active_autoneg = 1;
1171                 advertising |= ADVERTISED_Autoneg;
1172
1173                 neg = advert & lpa;
1174                 neg1000 = (ctrl1000 << 2) & stat1000;
1175
1176                 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1177                         active_speed = SPEED_1000;
1178                 else if (neg & LPA_100)
1179                         active_speed = SPEED_100;
1180                 else if (neg & (LPA_10HALF | LPA_10FULL))
1181                         active_speed = SPEED_10;
1182                 else
1183                         active_speed = SPEED_INVALID;
1184
1185                 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1186                         active_duplex = DUPLEX_FULL;
1187                 else if (active_speed != SPEED_INVALID)
1188                         active_duplex = DUPLEX_HALF;
1189                 else
1190                         active_duplex = DUPLEX_INVALID;
1191         } else {
1192                 lp->active_autoneg = 0;
1193
1194                 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1195                         active_speed = SPEED_1000;
1196                 else if (bmcr & BMCR_SPEED100)
1197                         active_speed = SPEED_100;
1198                 else
1199                         active_speed = SPEED_10;
1200
1201                 if (bmcr & BMCR_FULLDPLX)
1202                         active_duplex = DUPLEX_FULL;
1203                 else
1204                         active_duplex = DUPLEX_HALF;
1205         }
1206
1207         lp->active_advertising = advertising;
1208         lp->active_speed = active_speed;
1209         lp->active_duplex = active_duplex;
1210         *link_up_p = !!(bmsr & BMSR_LSTATUS);
1211
1212         return 0;
1213 }
1214
1215 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1216 {
1217         struct niu_link_config *lp = &np->link_config;
1218         u16 current_speed, bmsr;
1219         unsigned long flags;
1220         u8 current_duplex;
1221         int err, link_up;
1222
1223         link_up = 0;
1224         current_speed = SPEED_INVALID;
1225         current_duplex = DUPLEX_INVALID;
1226
1227         spin_lock_irqsave(&np->lock, flags);
1228
1229         err = -EINVAL;
1230
1231         err = mii_read(np, np->phy_addr, MII_BMSR);
1232         if (err < 0)
1233                 goto out;
1234
1235         bmsr = err;
1236         if (bmsr & BMSR_LSTATUS) {
1237                 u16 adv, lpa;
1238
1239                 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1240                 if (err < 0)
1241                         goto out;
1242                 adv = err;
1243
1244                 err = mii_read(np, np->phy_addr, MII_LPA);
1245                 if (err < 0)
1246                         goto out;
1247                 lpa = err;
1248
1249                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1250                 if (err < 0)
1251                         goto out;
1252                 link_up = 1;
1253                 current_speed = SPEED_1000;
1254                 current_duplex = DUPLEX_FULL;
1255
1256         }
1257         lp->active_speed = current_speed;
1258         lp->active_duplex = current_duplex;
1259         err = 0;
1260
1261 out:
1262         spin_unlock_irqrestore(&np->lock, flags);
1263
1264         *link_up_p = link_up;
1265         return err;
1266 }
1267
1268 static int link_status_1g(struct niu *np, int *link_up_p)
1269 {
1270         struct niu_link_config *lp = &np->link_config;
1271         unsigned long flags;
1272         int err;
1273
1274         spin_lock_irqsave(&np->lock, flags);
1275
1276         err = link_status_mii(np, link_up_p);
1277         lp->supported |= SUPPORTED_TP;
1278         lp->active_advertising |= ADVERTISED_TP;
1279
1280         spin_unlock_irqrestore(&np->lock, flags);
1281         return err;
1282 }
1283
1284 static int bcm8704_reset(struct niu *np)
1285 {
1286         int err, limit;
1287
1288         err = mdio_read(np, np->phy_addr,
1289                         BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1290         if (err < 0 || err == 0xffff)
1291                 return err;
1292         err |= BMCR_RESET;
1293         err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1294                          MII_BMCR, err);
1295         if (err)
1296                 return err;
1297
1298         limit = 1000;
1299         while (--limit >= 0) {
1300                 err = mdio_read(np, np->phy_addr,
1301                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1302                 if (err < 0)
1303                         return err;
1304                 if (!(err & BMCR_RESET))
1305                         break;
1306         }
1307         if (limit < 0) {
1308                 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1309                            np->port, (err & 0xffff));
1310                 return -ENODEV;
1311         }
1312         return 0;
1313 }
1314
1315 /* When written, certain PHY registers need to be read back twice
1316  * in order for the bits to settle properly.
1317  */
1318 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1319 {
1320         int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1321         if (err < 0)
1322                 return err;
1323         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1324         if (err < 0)
1325                 return err;
1326         return 0;
1327 }
1328
1329 static int bcm8706_init_user_dev3(struct niu *np)
1330 {
1331         int err;
1332
1333
1334         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1335                         BCM8704_USER_OPT_DIGITAL_CTRL);
1336         if (err < 0)
1337                 return err;
1338         err &= ~USER_ODIG_CTRL_GPIOS;
1339         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1340         err |=  USER_ODIG_CTRL_RESV2;
1341         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1342                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1343         if (err)
1344                 return err;
1345
1346         mdelay(1000);
1347
1348         return 0;
1349 }
1350
1351 static int bcm8704_init_user_dev3(struct niu *np)
1352 {
1353         int err;
1354
1355         err = mdio_write(np, np->phy_addr,
1356                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1357                          (USER_CONTROL_OPTXRST_LVL |
1358                           USER_CONTROL_OPBIASFLT_LVL |
1359                           USER_CONTROL_OBTMPFLT_LVL |
1360                           USER_CONTROL_OPPRFLT_LVL |
1361                           USER_CONTROL_OPTXFLT_LVL |
1362                           USER_CONTROL_OPRXLOS_LVL |
1363                           USER_CONTROL_OPRXFLT_LVL |
1364                           USER_CONTROL_OPTXON_LVL |
1365                           (0x3f << USER_CONTROL_RES1_SHIFT)));
1366         if (err)
1367                 return err;
1368
1369         err = mdio_write(np, np->phy_addr,
1370                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1371                          (USER_PMD_TX_CTL_XFP_CLKEN |
1372                           (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1373                           (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1374                           USER_PMD_TX_CTL_TSCK_LPWREN));
1375         if (err)
1376                 return err;
1377
1378         err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1379         if (err)
1380                 return err;
1381         err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1382         if (err)
1383                 return err;
1384
1385         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1386                         BCM8704_USER_OPT_DIGITAL_CTRL);
1387         if (err < 0)
1388                 return err;
1389         err &= ~USER_ODIG_CTRL_GPIOS;
1390         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1391         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1392                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1393         if (err)
1394                 return err;
1395
1396         mdelay(1000);
1397
1398         return 0;
1399 }
1400
1401 static int mrvl88x2011_act_led(struct niu *np, int val)
1402 {
1403         int     err;
1404
1405         err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1406                 MRVL88X2011_LED_8_TO_11_CTL);
1407         if (err < 0)
1408                 return err;
1409
1410         err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1411         err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1412
1413         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1414                           MRVL88X2011_LED_8_TO_11_CTL, err);
1415 }
1416
1417 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1418 {
1419         int     err;
1420
1421         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1422                         MRVL88X2011_LED_BLINK_CTL);
1423         if (err >= 0) {
1424                 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1425                 err |= (rate << 4);
1426
1427                 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1428                                  MRVL88X2011_LED_BLINK_CTL, err);
1429         }
1430
1431         return err;
1432 }
1433
1434 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1435 {
1436         int     err;
1437
1438         /* Set LED functions */
1439         err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1440         if (err)
1441                 return err;
1442
1443         /* led activity */
1444         err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1445         if (err)
1446                 return err;
1447
1448         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1449                         MRVL88X2011_GENERAL_CTL);
1450         if (err < 0)
1451                 return err;
1452
1453         err |= MRVL88X2011_ENA_XFPREFCLK;
1454
1455         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1456                          MRVL88X2011_GENERAL_CTL, err);
1457         if (err < 0)
1458                 return err;
1459
1460         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1461                         MRVL88X2011_PMA_PMD_CTL_1);
1462         if (err < 0)
1463                 return err;
1464
1465         if (np->link_config.loopback_mode == LOOPBACK_MAC)
1466                 err |= MRVL88X2011_LOOPBACK;
1467         else
1468                 err &= ~MRVL88X2011_LOOPBACK;
1469
1470         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1471                          MRVL88X2011_PMA_PMD_CTL_1, err);
1472         if (err < 0)
1473                 return err;
1474
1475         /* Enable PMD  */
1476         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1477                           MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1478 }
1479
1480
1481 static int xcvr_diag_bcm870x(struct niu *np)
1482 {
1483         u16 analog_stat0, tx_alarm_status;
1484         int err = 0;
1485
1486 #if 1
1487         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1488                         MII_STAT1000);
1489         if (err < 0)
1490                 return err;
1491         pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1492
1493         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1494         if (err < 0)
1495                 return err;
1496         pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1497
1498         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1499                         MII_NWAYTEST);
1500         if (err < 0)
1501                 return err;
1502         pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1503 #endif
1504
1505         /* XXX dig this out it might not be so useful XXX */
1506         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1507                         BCM8704_USER_ANALOG_STATUS0);
1508         if (err < 0)
1509                 return err;
1510         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1511                         BCM8704_USER_ANALOG_STATUS0);
1512         if (err < 0)
1513                 return err;
1514         analog_stat0 = err;
1515
1516         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1517                         BCM8704_USER_TX_ALARM_STATUS);
1518         if (err < 0)
1519                 return err;
1520         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1521                         BCM8704_USER_TX_ALARM_STATUS);
1522         if (err < 0)
1523                 return err;
1524         tx_alarm_status = err;
1525
1526         if (analog_stat0 != 0x03fc) {
1527                 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1528                         pr_info("Port %u cable not connected or bad cable\n",
1529                                 np->port);
1530                 } else if (analog_stat0 == 0x639c) {
1531                         pr_info("Port %u optical module is bad or missing\n",
1532                                 np->port);
1533                 }
1534         }
1535
1536         return 0;
1537 }
1538
1539 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1540 {
1541         struct niu_link_config *lp = &np->link_config;
1542         int err;
1543
1544         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1545                         MII_BMCR);
1546         if (err < 0)
1547                 return err;
1548
1549         err &= ~BMCR_LOOPBACK;
1550
1551         if (lp->loopback_mode == LOOPBACK_MAC)
1552                 err |= BMCR_LOOPBACK;
1553
1554         err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1555                          MII_BMCR, err);
1556         if (err)
1557                 return err;
1558
1559         return 0;
1560 }
1561
1562 static int xcvr_init_10g_bcm8706(struct niu *np)
1563 {
1564         int err = 0;
1565         u64 val;
1566
1567         if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1568             (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1569                         return err;
1570
1571         val = nr64_mac(XMAC_CONFIG);
1572         val &= ~XMAC_CONFIG_LED_POLARITY;
1573         val |= XMAC_CONFIG_FORCE_LED_ON;
1574         nw64_mac(XMAC_CONFIG, val);
1575
1576         val = nr64(MIF_CONFIG);
1577         val |= MIF_CONFIG_INDIRECT_MODE;
1578         nw64(MIF_CONFIG, val);
1579
1580         err = bcm8704_reset(np);
1581         if (err)
1582                 return err;
1583
1584         err = xcvr_10g_set_lb_bcm870x(np);
1585         if (err)
1586                 return err;
1587
1588         err = bcm8706_init_user_dev3(np);
1589         if (err)
1590                 return err;
1591
1592         err = xcvr_diag_bcm870x(np);
1593         if (err)
1594                 return err;
1595
1596         return 0;
1597 }
1598
1599 static int xcvr_init_10g_bcm8704(struct niu *np)
1600 {
1601         int err;
1602
1603         err = bcm8704_reset(np);
1604         if (err)
1605                 return err;
1606
1607         err = bcm8704_init_user_dev3(np);
1608         if (err)
1609                 return err;
1610
1611         err = xcvr_10g_set_lb_bcm870x(np);
1612         if (err)
1613                 return err;
1614
1615         err =  xcvr_diag_bcm870x(np);
1616         if (err)
1617                 return err;
1618
1619         return 0;
1620 }
1621
1622 static int xcvr_init_10g(struct niu *np)
1623 {
1624         int phy_id, err;
1625         u64 val;
1626
1627         val = nr64_mac(XMAC_CONFIG);
1628         val &= ~XMAC_CONFIG_LED_POLARITY;
1629         val |= XMAC_CONFIG_FORCE_LED_ON;
1630         nw64_mac(XMAC_CONFIG, val);
1631
1632         /* XXX shared resource, lock parent XXX */
1633         val = nr64(MIF_CONFIG);
1634         val |= MIF_CONFIG_INDIRECT_MODE;
1635         nw64(MIF_CONFIG, val);
1636
1637         phy_id = phy_decode(np->parent->port_phy, np->port);
1638         phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1639
1640         /* handle different phy types */
1641         switch (phy_id & NIU_PHY_ID_MASK) {
1642         case NIU_PHY_ID_MRVL88X2011:
1643                 err = xcvr_init_10g_mrvl88x2011(np);
1644                 break;
1645
1646         default: /* bcom 8704 */
1647                 err = xcvr_init_10g_bcm8704(np);
1648                 break;
1649         }
1650
1651         return err;
1652 }
1653
1654 static int mii_reset(struct niu *np)
1655 {
1656         int limit, err;
1657
1658         err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1659         if (err)
1660                 return err;
1661
1662         limit = 1000;
1663         while (--limit >= 0) {
1664                 udelay(500);
1665                 err = mii_read(np, np->phy_addr, MII_BMCR);
1666                 if (err < 0)
1667                         return err;
1668                 if (!(err & BMCR_RESET))
1669                         break;
1670         }
1671         if (limit < 0) {
1672                 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1673                            np->port, err);
1674                 return -ENODEV;
1675         }
1676
1677         return 0;
1678 }
1679
1680 static int xcvr_init_1g_rgmii(struct niu *np)
1681 {
1682         int err;
1683         u64 val;
1684         u16 bmcr, bmsr, estat;
1685
1686         val = nr64(MIF_CONFIG);
1687         val &= ~MIF_CONFIG_INDIRECT_MODE;
1688         nw64(MIF_CONFIG, val);
1689
1690         err = mii_reset(np);
1691         if (err)
1692                 return err;
1693
1694         err = mii_read(np, np->phy_addr, MII_BMSR);
1695         if (err < 0)
1696                 return err;
1697         bmsr = err;
1698
1699         estat = 0;
1700         if (bmsr & BMSR_ESTATEN) {
1701                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1702                 if (err < 0)
1703                         return err;
1704                 estat = err;
1705         }
1706
1707         bmcr = 0;
1708         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1709         if (err)
1710                 return err;
1711
1712         if (bmsr & BMSR_ESTATEN) {
1713                 u16 ctrl1000 = 0;
1714
1715                 if (estat & ESTATUS_1000_TFULL)
1716                         ctrl1000 |= ADVERTISE_1000FULL;
1717                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1718                 if (err)
1719                         return err;
1720         }
1721
1722         bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1723
1724         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1725         if (err)
1726                 return err;
1727
1728         err = mii_read(np, np->phy_addr, MII_BMCR);
1729         if (err < 0)
1730                 return err;
1731         bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1732
1733         err = mii_read(np, np->phy_addr, MII_BMSR);
1734         if (err < 0)
1735                 return err;
1736
1737         return 0;
1738 }
1739
1740 static int mii_init_common(struct niu *np)
1741 {
1742         struct niu_link_config *lp = &np->link_config;
1743         u16 bmcr, bmsr, adv, estat;
1744         int err;
1745
1746         err = mii_reset(np);
1747         if (err)
1748                 return err;
1749
1750         err = mii_read(np, np->phy_addr, MII_BMSR);
1751         if (err < 0)
1752                 return err;
1753         bmsr = err;
1754
1755         estat = 0;
1756         if (bmsr & BMSR_ESTATEN) {
1757                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1758                 if (err < 0)
1759                         return err;
1760                 estat = err;
1761         }
1762
1763         bmcr = 0;
1764         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1765         if (err)
1766                 return err;
1767
1768         if (lp->loopback_mode == LOOPBACK_MAC) {
1769                 bmcr |= BMCR_LOOPBACK;
1770                 if (lp->active_speed == SPEED_1000)
1771                         bmcr |= BMCR_SPEED1000;
1772                 if (lp->active_duplex == DUPLEX_FULL)
1773                         bmcr |= BMCR_FULLDPLX;
1774         }
1775
1776         if (lp->loopback_mode == LOOPBACK_PHY) {
1777                 u16 aux;
1778
1779                 aux = (BCM5464R_AUX_CTL_EXT_LB |
1780                        BCM5464R_AUX_CTL_WRITE_1);
1781                 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1782                 if (err)
1783                         return err;
1784         }
1785
1786         if (lp->autoneg) {
1787                 u16 ctrl1000;
1788
1789                 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1790                 if ((bmsr & BMSR_10HALF) &&
1791                         (lp->advertising & ADVERTISED_10baseT_Half))
1792                         adv |= ADVERTISE_10HALF;
1793                 if ((bmsr & BMSR_10FULL) &&
1794                         (lp->advertising & ADVERTISED_10baseT_Full))
1795                         adv |= ADVERTISE_10FULL;
1796                 if ((bmsr & BMSR_100HALF) &&
1797                         (lp->advertising & ADVERTISED_100baseT_Half))
1798                         adv |= ADVERTISE_100HALF;
1799                 if ((bmsr & BMSR_100FULL) &&
1800                         (lp->advertising & ADVERTISED_100baseT_Full))
1801                         adv |= ADVERTISE_100FULL;
1802                 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1803                 if (err)
1804                         return err;
1805
1806                 if (likely(bmsr & BMSR_ESTATEN)) {
1807                         ctrl1000 = 0;
1808                         if ((estat & ESTATUS_1000_THALF) &&
1809                                 (lp->advertising & ADVERTISED_1000baseT_Half))
1810                                 ctrl1000 |= ADVERTISE_1000HALF;
1811                         if ((estat & ESTATUS_1000_TFULL) &&
1812                                 (lp->advertising & ADVERTISED_1000baseT_Full))
1813                                 ctrl1000 |= ADVERTISE_1000FULL;
1814                         err = mii_write(np, np->phy_addr,
1815                                         MII_CTRL1000, ctrl1000);
1816                         if (err)
1817                                 return err;
1818                 }
1819
1820                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1821         } else {
1822                 /* !lp->autoneg */
1823                 int fulldpx;
1824
1825                 if (lp->duplex == DUPLEX_FULL) {
1826                         bmcr |= BMCR_FULLDPLX;
1827                         fulldpx = 1;
1828                 } else if (lp->duplex == DUPLEX_HALF)
1829                         fulldpx = 0;
1830                 else
1831                         return -EINVAL;
1832
1833                 if (lp->speed == SPEED_1000) {
1834                         /* if X-full requested while not supported, or
1835                            X-half requested while not supported... */
1836                         if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1837                                 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1838                                 return -EINVAL;
1839                         bmcr |= BMCR_SPEED1000;
1840                 } else if (lp->speed == SPEED_100) {
1841                         if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1842                                 (!fulldpx && !(bmsr & BMSR_100HALF)))
1843                                 return -EINVAL;
1844                         bmcr |= BMCR_SPEED100;
1845                 } else if (lp->speed == SPEED_10) {
1846                         if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1847                                 (!fulldpx && !(bmsr & BMSR_10HALF)))
1848                                 return -EINVAL;
1849                 } else
1850                         return -EINVAL;
1851         }
1852
1853         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1854         if (err)
1855                 return err;
1856
1857 #if 0
1858         err = mii_read(np, np->phy_addr, MII_BMCR);
1859         if (err < 0)
1860                 return err;
1861         bmcr = err;
1862
1863         err = mii_read(np, np->phy_addr, MII_BMSR);
1864         if (err < 0)
1865                 return err;
1866         bmsr = err;
1867
1868         pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1869                 np->port, bmcr, bmsr);
1870 #endif
1871
1872         return 0;
1873 }
1874
1875 static int xcvr_init_1g(struct niu *np)
1876 {
1877         u64 val;
1878
1879         /* XXX shared resource, lock parent XXX */
1880         val = nr64(MIF_CONFIG);
1881         val &= ~MIF_CONFIG_INDIRECT_MODE;
1882         nw64(MIF_CONFIG, val);
1883
1884         return mii_init_common(np);
1885 }
1886
1887 static int niu_xcvr_init(struct niu *np)
1888 {
1889         const struct niu_phy_ops *ops = np->phy_ops;
1890         int err;
1891
1892         err = 0;
1893         if (ops->xcvr_init)
1894                 err = ops->xcvr_init(np);
1895
1896         return err;
1897 }
1898
1899 static int niu_serdes_init(struct niu *np)
1900 {
1901         const struct niu_phy_ops *ops = np->phy_ops;
1902         int err;
1903
1904         err = 0;
1905         if (ops->serdes_init)
1906                 err = ops->serdes_init(np);
1907
1908         return err;
1909 }
1910
1911 static void niu_init_xif(struct niu *);
1912 static void niu_handle_led(struct niu *, int status);
1913
1914 static int niu_link_status_common(struct niu *np, int link_up)
1915 {
1916         struct niu_link_config *lp = &np->link_config;
1917         struct net_device *dev = np->dev;
1918         unsigned long flags;
1919
1920         if (!netif_carrier_ok(dev) && link_up) {
1921                 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1922                            lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1923                            lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1924                            lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1925                            "10Mbit/sec",
1926                            lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1927
1928                 spin_lock_irqsave(&np->lock, flags);
1929                 niu_init_xif(np);
1930                 niu_handle_led(np, 1);
1931                 spin_unlock_irqrestore(&np->lock, flags);
1932
1933                 netif_carrier_on(dev);
1934         } else if (netif_carrier_ok(dev) && !link_up) {
1935                 netif_warn(np, link, dev, "Link is down\n");
1936                 spin_lock_irqsave(&np->lock, flags);
1937                 niu_handle_led(np, 0);
1938                 spin_unlock_irqrestore(&np->lock, flags);
1939                 netif_carrier_off(dev);
1940         }
1941
1942         return 0;
1943 }
1944
1945 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1946 {
1947         int err, link_up, pma_status, pcs_status;
1948
1949         link_up = 0;
1950
1951         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1952                         MRVL88X2011_10G_PMD_STATUS_2);
1953         if (err < 0)
1954                 goto out;
1955
1956         /* Check PMA/PMD Register: 1.0001.2 == 1 */
1957         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1958                         MRVL88X2011_PMA_PMD_STATUS_1);
1959         if (err < 0)
1960                 goto out;
1961
1962         pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1963
1964         /* Check PMC Register : 3.0001.2 == 1: read twice */
1965         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1966                         MRVL88X2011_PMA_PMD_STATUS_1);
1967         if (err < 0)
1968                 goto out;
1969
1970         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1971                         MRVL88X2011_PMA_PMD_STATUS_1);
1972         if (err < 0)
1973                 goto out;
1974
1975         pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1976
1977         /* Check XGXS Register : 4.0018.[0-3,12] */
1978         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1979                         MRVL88X2011_10G_XGXS_LANE_STAT);
1980         if (err < 0)
1981                 goto out;
1982
1983         if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1984                     PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1985                     PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1986                     0x800))
1987                 link_up = (pma_status && pcs_status) ? 1 : 0;
1988
1989         np->link_config.active_speed = SPEED_10000;
1990         np->link_config.active_duplex = DUPLEX_FULL;
1991         err = 0;
1992 out:
1993         mrvl88x2011_act_led(np, (link_up ?
1994                                  MRVL88X2011_LED_CTL_PCS_ACT :
1995                                  MRVL88X2011_LED_CTL_OFF));
1996
1997         *link_up_p = link_up;
1998         return err;
1999 }
2000
2001 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
2002 {
2003         int err, link_up;
2004         link_up = 0;
2005
2006         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2007                         BCM8704_PMD_RCV_SIGDET);
2008         if (err < 0 || err == 0xffff)
2009                 goto out;
2010         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2011                 err = 0;
2012                 goto out;
2013         }
2014
2015         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2016                         BCM8704_PCS_10G_R_STATUS);
2017         if (err < 0)
2018                 goto out;
2019
2020         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2021                 err = 0;
2022                 goto out;
2023         }
2024
2025         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2026                         BCM8704_PHYXS_XGXS_LANE_STAT);
2027         if (err < 0)
2028                 goto out;
2029         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2030                     PHYXS_XGXS_LANE_STAT_MAGIC |
2031                     PHYXS_XGXS_LANE_STAT_PATTEST |
2032                     PHYXS_XGXS_LANE_STAT_LANE3 |
2033                     PHYXS_XGXS_LANE_STAT_LANE2 |
2034                     PHYXS_XGXS_LANE_STAT_LANE1 |
2035                     PHYXS_XGXS_LANE_STAT_LANE0)) {
2036                 err = 0;
2037                 np->link_config.active_speed = SPEED_INVALID;
2038                 np->link_config.active_duplex = DUPLEX_INVALID;
2039                 goto out;
2040         }
2041
2042         link_up = 1;
2043         np->link_config.active_speed = SPEED_10000;
2044         np->link_config.active_duplex = DUPLEX_FULL;
2045         err = 0;
2046
2047 out:
2048         *link_up_p = link_up;
2049         return err;
2050 }
2051
2052 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2053 {
2054         int err, link_up;
2055
2056         link_up = 0;
2057
2058         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2059                         BCM8704_PMD_RCV_SIGDET);
2060         if (err < 0)
2061                 goto out;
2062         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2063                 err = 0;
2064                 goto out;
2065         }
2066
2067         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2068                         BCM8704_PCS_10G_R_STATUS);
2069         if (err < 0)
2070                 goto out;
2071         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2072                 err = 0;
2073                 goto out;
2074         }
2075
2076         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2077                         BCM8704_PHYXS_XGXS_LANE_STAT);
2078         if (err < 0)
2079                 goto out;
2080
2081         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2082                     PHYXS_XGXS_LANE_STAT_MAGIC |
2083                     PHYXS_XGXS_LANE_STAT_LANE3 |
2084                     PHYXS_XGXS_LANE_STAT_LANE2 |
2085                     PHYXS_XGXS_LANE_STAT_LANE1 |
2086                     PHYXS_XGXS_LANE_STAT_LANE0)) {
2087                 err = 0;
2088                 goto out;
2089         }
2090
2091         link_up = 1;
2092         np->link_config.active_speed = SPEED_10000;
2093         np->link_config.active_duplex = DUPLEX_FULL;
2094         err = 0;
2095
2096 out:
2097         *link_up_p = link_up;
2098         return err;
2099 }
2100
2101 static int link_status_10g(struct niu *np, int *link_up_p)
2102 {
2103         unsigned long flags;
2104         int err = -EINVAL;
2105
2106         spin_lock_irqsave(&np->lock, flags);
2107
2108         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2109                 int phy_id;
2110
2111                 phy_id = phy_decode(np->parent->port_phy, np->port);
2112                 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2113
2114                 /* handle different phy types */
2115                 switch (phy_id & NIU_PHY_ID_MASK) {
2116                 case NIU_PHY_ID_MRVL88X2011:
2117                         err = link_status_10g_mrvl(np, link_up_p);
2118                         break;
2119
2120                 default: /* bcom 8704 */
2121                         err = link_status_10g_bcom(np, link_up_p);
2122                         break;
2123                 }
2124         }
2125
2126         spin_unlock_irqrestore(&np->lock, flags);
2127
2128         return err;
2129 }
2130
2131 static int niu_10g_phy_present(struct niu *np)
2132 {
2133         u64 sig, mask, val;
2134
2135         sig = nr64(ESR_INT_SIGNALS);
2136         switch (np->port) {
2137         case 0:
2138                 mask = ESR_INT_SIGNALS_P0_BITS;
2139                 val = (ESR_INT_SRDY0_P0 |
2140                        ESR_INT_DET0_P0 |
2141                        ESR_INT_XSRDY_P0 |
2142                        ESR_INT_XDP_P0_CH3 |
2143                        ESR_INT_XDP_P0_CH2 |
2144                        ESR_INT_XDP_P0_CH1 |
2145                        ESR_INT_XDP_P0_CH0);
2146                 break;
2147
2148         case 1:
2149                 mask = ESR_INT_SIGNALS_P1_BITS;
2150                 val = (ESR_INT_SRDY0_P1 |
2151                        ESR_INT_DET0_P1 |
2152                        ESR_INT_XSRDY_P1 |
2153                        ESR_INT_XDP_P1_CH3 |
2154                        ESR_INT_XDP_P1_CH2 |
2155                        ESR_INT_XDP_P1_CH1 |
2156                        ESR_INT_XDP_P1_CH0);
2157                 break;
2158
2159         default:
2160                 return 0;
2161         }
2162
2163         if ((sig & mask) != val)
2164                 return 0;
2165         return 1;
2166 }
2167
2168 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2169 {
2170         unsigned long flags;
2171         int err = 0;
2172         int phy_present;
2173         int phy_present_prev;
2174
2175         spin_lock_irqsave(&np->lock, flags);
2176
2177         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2178                 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2179                         1 : 0;
2180                 phy_present = niu_10g_phy_present(np);
2181                 if (phy_present != phy_present_prev) {
2182                         /* state change */
2183                         if (phy_present) {
2184                                 /* A NEM was just plugged in */
2185                                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2186                                 if (np->phy_ops->xcvr_init)
2187                                         err = np->phy_ops->xcvr_init(np);
2188                                 if (err) {
2189                                         err = mdio_read(np, np->phy_addr,
2190                                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2191                                         if (err == 0xffff) {
2192                                                 /* No mdio, back-to-back XAUI */
2193                                                 goto out;
2194                                         }
2195                                         /* debounce */
2196                                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2197                                 }
2198                         } else {
2199                                 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2200                                 *link_up_p = 0;
2201                                 netif_warn(np, link, np->dev,
2202                                            "Hotplug PHY Removed\n");
2203                         }
2204                 }
2205 out:
2206                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2207                         err = link_status_10g_bcm8706(np, link_up_p);
2208                         if (err == 0xffff) {
2209                                 /* No mdio, back-to-back XAUI: it is C10NEM */
2210                                 *link_up_p = 1;
2211                                 np->link_config.active_speed = SPEED_10000;
2212                                 np->link_config.active_duplex = DUPLEX_FULL;
2213                         }
2214                 }
2215         }
2216
2217         spin_unlock_irqrestore(&np->lock, flags);
2218
2219         return 0;
2220 }
2221
2222 static int niu_link_status(struct niu *np, int *link_up_p)
2223 {
2224         const struct niu_phy_ops *ops = np->phy_ops;
2225         int err;
2226
2227         err = 0;
2228         if (ops->link_status)
2229                 err = ops->link_status(np, link_up_p);
2230
2231         return err;
2232 }
2233
2234 static void niu_timer(unsigned long __opaque)
2235 {
2236         struct niu *np = (struct niu *) __opaque;
2237         unsigned long off;
2238         int err, link_up;
2239
2240         err = niu_link_status(np, &link_up);
2241         if (!err)
2242                 niu_link_status_common(np, link_up);
2243
2244         if (netif_carrier_ok(np->dev))
2245                 off = 5 * HZ;
2246         else
2247                 off = 1 * HZ;
2248         np->timer.expires = jiffies + off;
2249
2250         add_timer(&np->timer);
2251 }
2252
2253 static const struct niu_phy_ops phy_ops_10g_serdes = {
2254         .serdes_init            = serdes_init_10g_serdes,
2255         .link_status            = link_status_10g_serdes,
2256 };
2257
2258 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2259         .serdes_init            = serdes_init_niu_10g_serdes,
2260         .link_status            = link_status_10g_serdes,
2261 };
2262
2263 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2264         .serdes_init            = serdes_init_niu_1g_serdes,
2265         .link_status            = link_status_1g_serdes,
2266 };
2267
2268 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2269         .xcvr_init              = xcvr_init_1g_rgmii,
2270         .link_status            = link_status_1g_rgmii,
2271 };
2272
2273 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2274         .serdes_init            = serdes_init_niu_10g_fiber,
2275         .xcvr_init              = xcvr_init_10g,
2276         .link_status            = link_status_10g,
2277 };
2278
2279 static const struct niu_phy_ops phy_ops_10g_fiber = {
2280         .serdes_init            = serdes_init_10g,
2281         .xcvr_init              = xcvr_init_10g,
2282         .link_status            = link_status_10g,
2283 };
2284
2285 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2286         .serdes_init            = serdes_init_10g,
2287         .xcvr_init              = xcvr_init_10g_bcm8706,
2288         .link_status            = link_status_10g_hotplug,
2289 };
2290
2291 static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2292         .serdes_init            = serdes_init_niu_10g_fiber,
2293         .xcvr_init              = xcvr_init_10g_bcm8706,
2294         .link_status            = link_status_10g_hotplug,
2295 };
2296
2297 static const struct niu_phy_ops phy_ops_10g_copper = {
2298         .serdes_init            = serdes_init_10g,
2299         .link_status            = link_status_10g, /* XXX */
2300 };
2301
2302 static const struct niu_phy_ops phy_ops_1g_fiber = {
2303         .serdes_init            = serdes_init_1g,
2304         .xcvr_init              = xcvr_init_1g,
2305         .link_status            = link_status_1g,
2306 };
2307
2308 static const struct niu_phy_ops phy_ops_1g_copper = {
2309         .xcvr_init              = xcvr_init_1g,
2310         .link_status            = link_status_1g,
2311 };
2312
2313 struct niu_phy_template {
2314         const struct niu_phy_ops        *ops;
2315         u32                             phy_addr_base;
2316 };
2317
2318 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2319         .ops            = &phy_ops_10g_fiber_niu,
2320         .phy_addr_base  = 16,
2321 };
2322
2323 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2324         .ops            = &phy_ops_10g_serdes_niu,
2325         .phy_addr_base  = 0,
2326 };
2327
2328 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2329         .ops            = &phy_ops_1g_serdes_niu,
2330         .phy_addr_base  = 0,
2331 };
2332
2333 static const struct niu_phy_template phy_template_10g_fiber = {
2334         .ops            = &phy_ops_10g_fiber,
2335         .phy_addr_base  = 8,
2336 };
2337
2338 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2339         .ops            = &phy_ops_10g_fiber_hotplug,
2340         .phy_addr_base  = 8,
2341 };
2342
2343 static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2344         .ops            = &phy_ops_niu_10g_hotplug,
2345         .phy_addr_base  = 8,
2346 };
2347
2348 static const struct niu_phy_template phy_template_10g_copper = {
2349         .ops            = &phy_ops_10g_copper,
2350         .phy_addr_base  = 10,
2351 };
2352
2353 static const struct niu_phy_template phy_template_1g_fiber = {
2354         .ops            = &phy_ops_1g_fiber,
2355         .phy_addr_base  = 0,
2356 };
2357
2358 static const struct niu_phy_template phy_template_1g_copper = {
2359         .ops            = &phy_ops_1g_copper,
2360         .phy_addr_base  = 0,
2361 };
2362
2363 static const struct niu_phy_template phy_template_1g_rgmii = {
2364         .ops            = &phy_ops_1g_rgmii,
2365         .phy_addr_base  = 0,
2366 };
2367
2368 static const struct niu_phy_template phy_template_10g_serdes = {
2369         .ops            = &phy_ops_10g_serdes,
2370         .phy_addr_base  = 0,
2371 };
2372
2373 static int niu_atca_port_num[4] = {
2374         0, 0,  11, 10
2375 };
2376
2377 static int serdes_init_10g_serdes(struct niu *np)
2378 {
2379         struct niu_link_config *lp = &np->link_config;
2380         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2381         u64 ctrl_val, test_cfg_val, sig, mask, val;
2382
2383         switch (np->port) {
2384         case 0:
2385                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2386                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2387                 pll_cfg = ENET_SERDES_0_PLL_CFG;
2388                 break;
2389         case 1:
2390                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2391                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2392                 pll_cfg = ENET_SERDES_1_PLL_CFG;
2393                 break;
2394
2395         default:
2396                 return -EINVAL;
2397         }
2398         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2399                     ENET_SERDES_CTRL_SDET_1 |
2400                     ENET_SERDES_CTRL_SDET_2 |
2401                     ENET_SERDES_CTRL_SDET_3 |
2402                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2403                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2404                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2405                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2406                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2407                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2408                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2409                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2410         test_cfg_val = 0;
2411
2412         if (lp->loopback_mode == LOOPBACK_PHY) {
2413                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2414                                   ENET_SERDES_TEST_MD_0_SHIFT) |
2415                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2416                                   ENET_SERDES_TEST_MD_1_SHIFT) |
2417                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2418                                   ENET_SERDES_TEST_MD_2_SHIFT) |
2419                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2420                                   ENET_SERDES_TEST_MD_3_SHIFT));
2421         }
2422
2423         esr_reset(np);
2424         nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2425         nw64(ctrl_reg, ctrl_val);
2426         nw64(test_cfg_reg, test_cfg_val);
2427
2428         /* Initialize all 4 lanes of the SERDES.  */
2429         for (i = 0; i < 4; i++) {
2430                 u32 rxtx_ctrl, glue0;
2431                 int err;
2432
2433                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2434                 if (err)
2435                         return err;
2436                 err = esr_read_glue0(np, i, &glue0);
2437                 if (err)
2438                         return err;
2439
2440                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2441                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2442                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2443
2444                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2445                            ESR_GLUE_CTRL0_THCNT |
2446                            ESR_GLUE_CTRL0_BLTIME);
2447                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2448                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2449                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2450                           (BLTIME_300_CYCLES <<
2451                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
2452
2453                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2454                 if (err)
2455                         return err;
2456                 err = esr_write_glue0(np, i, glue0);
2457                 if (err)
2458                         return err;
2459         }
2460
2461
2462         sig = nr64(ESR_INT_SIGNALS);
2463         switch (np->port) {
2464         case 0:
2465                 mask = ESR_INT_SIGNALS_P0_BITS;
2466                 val = (ESR_INT_SRDY0_P0 |
2467                        ESR_INT_DET0_P0 |
2468                        ESR_INT_XSRDY_P0 |
2469                        ESR_INT_XDP_P0_CH3 |
2470                        ESR_INT_XDP_P0_CH2 |
2471                        ESR_INT_XDP_P0_CH1 |
2472                        ESR_INT_XDP_P0_CH0);
2473                 break;
2474
2475         case 1:
2476                 mask = ESR_INT_SIGNALS_P1_BITS;
2477                 val = (ESR_INT_SRDY0_P1 |
2478                        ESR_INT_DET0_P1 |
2479                        ESR_INT_XSRDY_P1 |
2480                        ESR_INT_XDP_P1_CH3 |
2481                        ESR_INT_XDP_P1_CH2 |
2482                        ESR_INT_XDP_P1_CH1 |
2483                        ESR_INT_XDP_P1_CH0);
2484                 break;
2485
2486         default:
2487                 return -EINVAL;
2488         }
2489
2490         if ((sig & mask) != val) {
2491                 int err;
2492                 err = serdes_init_1g_serdes(np);
2493                 if (!err) {
2494                         np->flags &= ~NIU_FLAGS_10G;
2495                         np->mac_xcvr = MAC_XCVR_PCS;
2496                 }  else {
2497                         netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2498                                    np->port);
2499                         return -ENODEV;
2500                 }
2501         }
2502
2503         return 0;
2504 }
2505
2506 static int niu_determine_phy_disposition(struct niu *np)
2507 {
2508         struct niu_parent *parent = np->parent;
2509         u8 plat_type = parent->plat_type;
2510         const struct niu_phy_template *tp;
2511         u32 phy_addr_off = 0;
2512
2513         if (plat_type == PLAT_TYPE_NIU) {
2514                 switch (np->flags &
2515                         (NIU_FLAGS_10G |
2516                          NIU_FLAGS_FIBER |
2517                          NIU_FLAGS_XCVR_SERDES)) {
2518                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2519                         /* 10G Serdes */
2520                         tp = &phy_template_niu_10g_serdes;
2521                         break;
2522                 case NIU_FLAGS_XCVR_SERDES:
2523                         /* 1G Serdes */
2524                         tp = &phy_template_niu_1g_serdes;
2525                         break;
2526                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2527                         /* 10G Fiber */
2528                 default:
2529                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2530                                 tp = &phy_template_niu_10g_hotplug;
2531                                 if (np->port == 0)
2532                                         phy_addr_off = 8;
2533                                 if (np->port == 1)
2534                                         phy_addr_off = 12;
2535                         } else {
2536                                 tp = &phy_template_niu_10g_fiber;
2537                                 phy_addr_off += np->port;
2538                         }
2539                         break;
2540                 }
2541         } else {
2542                 switch (np->flags &
2543                         (NIU_FLAGS_10G |
2544                          NIU_FLAGS_FIBER |
2545                          NIU_FLAGS_XCVR_SERDES)) {
2546                 case 0:
2547                         /* 1G copper */
2548                         tp = &phy_template_1g_copper;
2549                         if (plat_type == PLAT_TYPE_VF_P0)
2550                                 phy_addr_off = 10;
2551                         else if (plat_type == PLAT_TYPE_VF_P1)
2552                                 phy_addr_off = 26;
2553
2554                         phy_addr_off += (np->port ^ 0x3);
2555                         break;
2556
2557                 case NIU_FLAGS_10G:
2558                         /* 10G copper */
2559                         tp = &phy_template_10g_copper;
2560                         break;
2561
2562                 case NIU_FLAGS_FIBER:
2563                         /* 1G fiber */
2564                         tp = &phy_template_1g_fiber;
2565                         break;
2566
2567                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2568                         /* 10G fiber */
2569                         tp = &phy_template_10g_fiber;
2570                         if (plat_type == PLAT_TYPE_VF_P0 ||
2571                             plat_type == PLAT_TYPE_VF_P1)
2572                                 phy_addr_off = 8;
2573                         phy_addr_off += np->port;
2574                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2575                                 tp = &phy_template_10g_fiber_hotplug;
2576                                 if (np->port == 0)
2577                                         phy_addr_off = 8;
2578                                 if (np->port == 1)
2579                                         phy_addr_off = 12;
2580                         }
2581                         break;
2582
2583                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2584                 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2585                 case NIU_FLAGS_XCVR_SERDES:
2586                         switch(np->port) {
2587                         case 0:
2588                         case 1:
2589                                 tp = &phy_template_10g_serdes;
2590                                 break;
2591                         case 2:
2592                         case 3:
2593                                 tp = &phy_template_1g_rgmii;
2594                                 break;
2595                         default:
2596                                 return -EINVAL;
2597                                 break;
2598                         }
2599                         phy_addr_off = niu_atca_port_num[np->port];
2600                         break;
2601
2602                 default:
2603                         return -EINVAL;
2604                 }
2605         }
2606
2607         np->phy_ops = tp->ops;
2608         np->phy_addr = tp->phy_addr_base + phy_addr_off;
2609
2610         return 0;
2611 }
2612
2613 static int niu_init_link(struct niu *np)
2614 {
2615         struct niu_parent *parent = np->parent;
2616         int err, ignore;
2617
2618         if (parent->plat_type == PLAT_TYPE_NIU) {
2619                 err = niu_xcvr_init(np);
2620                 if (err)
2621                         return err;
2622                 msleep(200);
2623         }
2624         err = niu_serdes_init(np);
2625         if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2626                 return err;
2627         msleep(200);
2628         err = niu_xcvr_init(np);
2629         if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2630                 niu_link_status(np, &ignore);
2631         return 0;
2632 }
2633
2634 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2635 {
2636         u16 reg0 = addr[4] << 8 | addr[5];
2637         u16 reg1 = addr[2] << 8 | addr[3];
2638         u16 reg2 = addr[0] << 8 | addr[1];
2639
2640         if (np->flags & NIU_FLAGS_XMAC) {
2641                 nw64_mac(XMAC_ADDR0, reg0);
2642                 nw64_mac(XMAC_ADDR1, reg1);
2643                 nw64_mac(XMAC_ADDR2, reg2);
2644         } else {
2645                 nw64_mac(BMAC_ADDR0, reg0);
2646                 nw64_mac(BMAC_ADDR1, reg1);
2647                 nw64_mac(BMAC_ADDR2, reg2);
2648         }
2649 }
2650
2651 static int niu_num_alt_addr(struct niu *np)
2652 {
2653         if (np->flags & NIU_FLAGS_XMAC)
2654                 return XMAC_NUM_ALT_ADDR;
2655         else
2656                 return BMAC_NUM_ALT_ADDR;
2657 }
2658
2659 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2660 {
2661         u16 reg0 = addr[4] << 8 | addr[5];
2662         u16 reg1 = addr[2] << 8 | addr[3];
2663         u16 reg2 = addr[0] << 8 | addr[1];
2664
2665         if (index >= niu_num_alt_addr(np))
2666                 return -EINVAL;
2667
2668         if (np->flags & NIU_FLAGS_XMAC) {
2669                 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2670                 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2671                 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2672         } else {
2673                 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2674                 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2675                 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2676         }
2677
2678         return 0;
2679 }
2680
2681 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2682 {
2683         unsigned long reg;
2684         u64 val, mask;
2685
2686         if (index >= niu_num_alt_addr(np))
2687                 return -EINVAL;
2688
2689         if (np->flags & NIU_FLAGS_XMAC) {
2690                 reg = XMAC_ADDR_CMPEN;
2691                 mask = 1 << index;
2692         } else {
2693                 reg = BMAC_ADDR_CMPEN;
2694                 mask = 1 << (index + 1);
2695         }
2696
2697         val = nr64_mac(reg);
2698         if (on)
2699                 val |= mask;
2700         else
2701                 val &= ~mask;
2702         nw64_mac(reg, val);
2703
2704         return 0;
2705 }
2706
2707 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2708                                    int num, int mac_pref)
2709 {
2710         u64 val = nr64_mac(reg);
2711         val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2712         val |= num;
2713         if (mac_pref)
2714                 val |= HOST_INFO_MPR;
2715         nw64_mac(reg, val);
2716 }
2717
2718 static int __set_rdc_table_num(struct niu *np,
2719                                int xmac_index, int bmac_index,
2720                                int rdc_table_num, int mac_pref)
2721 {
2722         unsigned long reg;
2723
2724         if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2725                 return -EINVAL;
2726         if (np->flags & NIU_FLAGS_XMAC)
2727                 reg = XMAC_HOST_INFO(xmac_index);
2728         else
2729                 reg = BMAC_HOST_INFO(bmac_index);
2730         __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2731         return 0;
2732 }
2733
2734 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2735                                          int mac_pref)
2736 {
2737         return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2738 }
2739
2740 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2741                                            int mac_pref)
2742 {
2743         return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2744 }
2745
2746 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2747                                      int table_num, int mac_pref)
2748 {
2749         if (idx >= niu_num_alt_addr(np))
2750                 return -EINVAL;
2751         return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2752 }
2753
2754 static u64 vlan_entry_set_parity(u64 reg_val)
2755 {
2756         u64 port01_mask;
2757         u64 port23_mask;
2758
2759         port01_mask = 0x00ff;
2760         port23_mask = 0xff00;
2761
2762         if (hweight64(reg_val & port01_mask) & 1)
2763                 reg_val |= ENET_VLAN_TBL_PARITY0;
2764         else
2765                 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2766
2767         if (hweight64(reg_val & port23_mask) & 1)
2768                 reg_val |= ENET_VLAN_TBL_PARITY1;
2769         else
2770                 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2771
2772         return reg_val;
2773 }
2774
2775 static void vlan_tbl_write(struct niu *np, unsigned long index,
2776                            int port, int vpr, int rdc_table)
2777 {
2778         u64 reg_val = nr64(ENET_VLAN_TBL(index));
2779
2780         reg_val &= ~((ENET_VLAN_TBL_VPR |
2781                       ENET_VLAN_TBL_VLANRDCTBLN) <<
2782                      ENET_VLAN_TBL_SHIFT(port));
2783         if (vpr)
2784                 reg_val |= (ENET_VLAN_TBL_VPR <<
2785                             ENET_VLAN_TBL_SHIFT(port));
2786         reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2787
2788         reg_val = vlan_entry_set_parity(reg_val);
2789
2790         nw64(ENET_VLAN_TBL(index), reg_val);
2791 }
2792
2793 static void vlan_tbl_clear(struct niu *np)
2794 {
2795         int i;
2796
2797         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2798                 nw64(ENET_VLAN_TBL(i), 0);
2799 }
2800
2801 static int tcam_wait_bit(struct niu *np, u64 bit)
2802 {
2803         int limit = 1000;
2804
2805         while (--limit > 0) {
2806                 if (nr64(TCAM_CTL) & bit)
2807                         break;
2808                 udelay(1);
2809         }
2810         if (limit <= 0)
2811                 return -ENODEV;
2812
2813         return 0;
2814 }
2815
2816 static int tcam_flush(struct niu *np, int index)
2817 {
2818         nw64(TCAM_KEY_0, 0x00);
2819         nw64(TCAM_KEY_MASK_0, 0xff);
2820         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2821
2822         return tcam_wait_bit(np, TCAM_CTL_STAT);
2823 }
2824
2825 #if 0
2826 static int tcam_read(struct niu *np, int index,
2827                      u64 *key, u64 *mask)
2828 {
2829         int err;
2830
2831         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2832         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2833         if (!err) {
2834                 key[0] = nr64(TCAM_KEY_0);
2835                 key[1] = nr64(TCAM_KEY_1);
2836                 key[2] = nr64(TCAM_KEY_2);
2837                 key[3] = nr64(TCAM_KEY_3);
2838                 mask[0] = nr64(TCAM_KEY_MASK_0);
2839                 mask[1] = nr64(TCAM_KEY_MASK_1);
2840                 mask[2] = nr64(TCAM_KEY_MASK_2);
2841                 mask[3] = nr64(TCAM_KEY_MASK_3);
2842         }
2843         return err;
2844 }
2845 #endif
2846
2847 static int tcam_write(struct niu *np, int index,
2848                       u64 *key, u64 *mask)
2849 {
2850         nw64(TCAM_KEY_0, key[0]);
2851         nw64(TCAM_KEY_1, key[1]);
2852         nw64(TCAM_KEY_2, key[2]);
2853         nw64(TCAM_KEY_3, key[3]);
2854         nw64(TCAM_KEY_MASK_0, mask[0]);
2855         nw64(TCAM_KEY_MASK_1, mask[1]);
2856         nw64(TCAM_KEY_MASK_2, mask[2]);
2857         nw64(TCAM_KEY_MASK_3, mask[3]);
2858         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2859
2860         return tcam_wait_bit(np, TCAM_CTL_STAT);
2861 }
2862
2863 #if 0
2864 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2865 {
2866         int err;
2867
2868         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2869         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2870         if (!err)
2871                 *data = nr64(TCAM_KEY_1);
2872
2873         return err;
2874 }
2875 #endif
2876
2877 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2878 {
2879         nw64(TCAM_KEY_1, assoc_data);
2880         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2881
2882         return tcam_wait_bit(np, TCAM_CTL_STAT);
2883 }
2884
2885 static void tcam_enable(struct niu *np, int on)
2886 {
2887         u64 val = nr64(FFLP_CFG_1);
2888
2889         if (on)
2890                 val &= ~FFLP_CFG_1_TCAM_DIS;
2891         else
2892                 val |= FFLP_CFG_1_TCAM_DIS;
2893         nw64(FFLP_CFG_1, val);
2894 }
2895
2896 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2897 {
2898         u64 val = nr64(FFLP_CFG_1);
2899
2900         val &= ~(FFLP_CFG_1_FFLPINITDONE |
2901                  FFLP_CFG_1_CAMLAT |
2902                  FFLP_CFG_1_CAMRATIO);
2903         val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2904         val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2905         nw64(FFLP_CFG_1, val);
2906
2907         val = nr64(FFLP_CFG_1);
2908         val |= FFLP_CFG_1_FFLPINITDONE;
2909         nw64(FFLP_CFG_1, val);
2910 }
2911
2912 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2913                                       int on)
2914 {
2915         unsigned long reg;
2916         u64 val;
2917
2918         if (class < CLASS_CODE_ETHERTYPE1 ||
2919             class > CLASS_CODE_ETHERTYPE2)
2920                 return -EINVAL;
2921
2922         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2923         val = nr64(reg);
2924         if (on)
2925                 val |= L2_CLS_VLD;
2926         else
2927                 val &= ~L2_CLS_VLD;
2928         nw64(reg, val);
2929
2930         return 0;
2931 }
2932
2933 #if 0
2934 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2935                                    u64 ether_type)
2936 {
2937         unsigned long reg;
2938         u64 val;
2939
2940         if (class < CLASS_CODE_ETHERTYPE1 ||
2941             class > CLASS_CODE_ETHERTYPE2 ||
2942             (ether_type & ~(u64)0xffff) != 0)
2943                 return -EINVAL;
2944
2945         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2946         val = nr64(reg);
2947         val &= ~L2_CLS_ETYPE;
2948         val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2949         nw64(reg, val);
2950
2951         return 0;
2952 }
2953 #endif
2954
2955 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2956                                      int on)
2957 {
2958         unsigned long reg;
2959         u64 val;
2960
2961         if (class < CLASS_CODE_USER_PROG1 ||
2962             class > CLASS_CODE_USER_PROG4)
2963                 return -EINVAL;
2964
2965         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2966         val = nr64(reg);
2967         if (on)
2968                 val |= L3_CLS_VALID;
2969         else
2970                 val &= ~L3_CLS_VALID;
2971         nw64(reg, val);
2972
2973         return 0;
2974 }
2975
2976 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2977                                   int ipv6, u64 protocol_id,
2978                                   u64 tos_mask, u64 tos_val)
2979 {
2980         unsigned long reg;
2981         u64 val;
2982
2983         if (class < CLASS_CODE_USER_PROG1 ||
2984             class > CLASS_CODE_USER_PROG4 ||
2985             (protocol_id & ~(u64)0xff) != 0 ||
2986             (tos_mask & ~(u64)0xff) != 0 ||
2987             (tos_val & ~(u64)0xff) != 0)
2988                 return -EINVAL;
2989
2990         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2991         val = nr64(reg);
2992         val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2993                  L3_CLS_TOSMASK | L3_CLS_TOS);
2994         if (ipv6)
2995                 val |= L3_CLS_IPVER;
2996         val |= (protocol_id << L3_CLS_PID_SHIFT);
2997         val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
2998         val |= (tos_val << L3_CLS_TOS_SHIFT);
2999         nw64(reg, val);
3000
3001         return 0;
3002 }
3003
3004 static int tcam_early_init(struct niu *np)
3005 {
3006         unsigned long i;
3007         int err;
3008
3009         tcam_enable(np, 0);
3010         tcam_set_lat_and_ratio(np,
3011                                DEFAULT_TCAM_LATENCY,
3012                                DEFAULT_TCAM_ACCESS_RATIO);
3013         for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3014                 err = tcam_user_eth_class_enable(np, i, 0);
3015                 if (err)
3016                         return err;
3017         }
3018         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3019                 err = tcam_user_ip_class_enable(np, i, 0);
3020                 if (err)
3021                         return err;
3022         }
3023
3024         return 0;
3025 }
3026
3027 static int tcam_flush_all(struct niu *np)
3028 {
3029         unsigned long i;
3030
3031         for (i = 0; i < np->parent->tcam_num_entries; i++) {
3032                 int err = tcam_flush(np, i);
3033                 if (err)
3034                         return err;
3035         }
3036         return 0;
3037 }
3038
3039 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3040 {
3041         return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3042 }
3043
3044 #if 0
3045 static int hash_read(struct niu *np, unsigned long partition,
3046                      unsigned long index, unsigned long num_entries,
3047                      u64 *data)
3048 {
3049         u64 val = hash_addr_regval(index, num_entries);
3050         unsigned long i;
3051
3052         if (partition >= FCRAM_NUM_PARTITIONS ||
3053             index + num_entries > FCRAM_SIZE)
3054                 return -EINVAL;
3055
3056         nw64(HASH_TBL_ADDR(partition), val);
3057         for (i = 0; i < num_entries; i++)
3058                 data[i] = nr64(HASH_TBL_DATA(partition));
3059
3060         return 0;
3061 }
3062 #endif
3063
3064 static int hash_write(struct niu *np, unsigned long partition,
3065                       unsigned long index, unsigned long num_entries,
3066                       u64 *data)
3067 {
3068         u64 val = hash_addr_regval(index, num_entries);
3069         unsigned long i;
3070
3071         if (partition >= FCRAM_NUM_PARTITIONS ||
3072             index + (num_entries * 8) > FCRAM_SIZE)
3073                 return -EINVAL;
3074
3075         nw64(HASH_TBL_ADDR(partition), val);
3076         for (i = 0; i < num_entries; i++)
3077                 nw64(HASH_TBL_DATA(partition), data[i]);
3078
3079         return 0;
3080 }
3081
3082 static void fflp_reset(struct niu *np)
3083 {
3084         u64 val;
3085
3086         nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3087         udelay(10);
3088         nw64(FFLP_CFG_1, 0);
3089
3090         val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3091         nw64(FFLP_CFG_1, val);
3092 }
3093
3094 static void fflp_set_timings(struct niu *np)
3095 {
3096         u64 val = nr64(FFLP_CFG_1);
3097
3098         val &= ~FFLP_CFG_1_FFLPINITDONE;
3099         val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3100         nw64(FFLP_CFG_1, val);
3101
3102         val = nr64(FFLP_CFG_1);
3103         val |= FFLP_CFG_1_FFLPINITDONE;
3104         nw64(FFLP_CFG_1, val);
3105
3106         val = nr64(FCRAM_REF_TMR);
3107         val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3108         val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3109         val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3110         nw64(FCRAM_REF_TMR, val);
3111 }
3112
3113 static int fflp_set_partition(struct niu *np, u64 partition,
3114                               u64 mask, u64 base, int enable)
3115 {
3116         unsigned long reg;
3117         u64 val;
3118
3119         if (partition >= FCRAM_NUM_PARTITIONS ||
3120             (mask & ~(u64)0x1f) != 0 ||
3121             (base & ~(u64)0x1f) != 0)
3122                 return -EINVAL;
3123
3124         reg = FLW_PRT_SEL(partition);
3125
3126         val = nr64(reg);
3127         val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3128         val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3129         val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3130         if (enable)
3131                 val |= FLW_PRT_SEL_EXT;
3132         nw64(reg, val);
3133
3134         return 0;
3135 }
3136
3137 static int fflp_disable_all_partitions(struct niu *np)
3138 {
3139         unsigned long i;
3140
3141         for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3142                 int err = fflp_set_partition(np, 0, 0, 0, 0);
3143                 if (err)
3144                         return err;
3145         }
3146         return 0;
3147 }
3148
3149 static void fflp_llcsnap_enable(struct niu *np, int on)
3150 {
3151         u64 val = nr64(FFLP_CFG_1);
3152
3153         if (on)
3154                 val |= FFLP_CFG_1_LLCSNAP;
3155         else
3156                 val &= ~FFLP_CFG_1_LLCSNAP;
3157         nw64(FFLP_CFG_1, val);
3158 }
3159
3160 static void fflp_errors_enable(struct niu *np, int on)
3161 {
3162         u64 val = nr64(FFLP_CFG_1);
3163
3164         if (on)
3165                 val &= ~FFLP_CFG_1_ERRORDIS;
3166         else
3167                 val |= FFLP_CFG_1_ERRORDIS;
3168         nw64(FFLP_CFG_1, val);
3169 }
3170
3171 static int fflp_hash_clear(struct niu *np)
3172 {
3173         struct fcram_hash_ipv4 ent;
3174         unsigned long i;
3175
3176         /* IPV4 hash entry with valid bit clear, rest is don't care.  */
3177         memset(&ent, 0, sizeof(ent));
3178         ent.header = HASH_HEADER_EXT;
3179
3180         for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3181                 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3182                 if (err)
3183                         return err;
3184         }
3185         return 0;
3186 }
3187
3188 static int fflp_early_init(struct niu *np)
3189 {
3190         struct niu_parent *parent;
3191         unsigned long flags;
3192         int err;
3193
3194         niu_lock_parent(np, flags);
3195
3196         parent = np->parent;
3197         err = 0;
3198         if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3199                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3200                         fflp_reset(np);
3201                         fflp_set_timings(np);
3202                         err = fflp_disable_all_partitions(np);
3203                         if (err) {
3204                                 netif_printk(np, probe, KERN_DEBUG, np->dev,
3205                                              "fflp_disable_all_partitions failed, err=%d\n",
3206                                              err);
3207                                 goto out;
3208                         }
3209                 }
3210
3211                 err = tcam_early_init(np);
3212                 if (err) {
3213                         netif_printk(np, probe, KERN_DEBUG, np->dev,
3214                                      "tcam_early_init failed, err=%d\n", err);
3215                         goto out;
3216                 }
3217                 fflp_llcsnap_enable(np, 1);
3218                 fflp_errors_enable(np, 0);
3219                 nw64(H1POLY, 0);
3220                 nw64(H2POLY, 0);
3221
3222                 err = tcam_flush_all(np);
3223                 if (err) {
3224                         netif_printk(np, probe, KERN_DEBUG, np->dev,
3225                                      "tcam_flush_all failed, err=%d\n", err);
3226                         goto out;
3227                 }
3228                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3229                         err = fflp_hash_clear(np);
3230                         if (err) {
3231                                 netif_printk(np, probe, KERN_DEBUG, np->dev,
3232                                              "fflp_hash_clear failed, err=%d\n",
3233                                              err);
3234                                 goto out;
3235                         }
3236                 }
3237
3238                 vlan_tbl_clear(np);
3239
3240                 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3241         }
3242 out:
3243         niu_unlock_parent(np, flags);
3244         return err;
3245 }
3246
3247 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3248 {
3249         if (class_code < CLASS_CODE_USER_PROG1 ||
3250             class_code > CLASS_CODE_SCTP_IPV6)
3251                 return -EINVAL;
3252
3253         nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3254         return 0;
3255 }
3256
3257 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3258 {
3259         if (class_code < CLASS_CODE_USER_PROG1 ||
3260             class_code > CLASS_CODE_SCTP_IPV6)
3261                 return -EINVAL;
3262
3263         nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3264         return 0;
3265 }
3266
3267 /* Entries for the ports are interleaved in the TCAM */
3268 static u16 tcam_get_index(struct niu *np, u16 idx)
3269 {
3270         /* One entry reserved for IP fragment rule */
3271         if (idx >= (np->clas.tcam_sz - 1))
3272                 idx = 0;
3273         return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3274 }
3275
3276 static u16 tcam_get_size(struct niu *np)
3277 {
3278         /* One entry reserved for IP fragment rule */
3279         return np->clas.tcam_sz - 1;
3280 }
3281
3282 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3283 {
3284         /* One entry reserved for IP fragment rule */
3285         return np->clas.tcam_valid_entries - 1;
3286 }
3287
3288 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3289                               u32 offset, u32 size)
3290 {
3291         int i = skb_shinfo(skb)->nr_frags;
3292         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3293
3294         frag->page = page;
3295         frag->page_offset = offset;
3296         frag->size = size;
3297
3298         skb->len += size;
3299         skb->data_len += size;
3300         skb->truesize += size;
3301
3302         skb_shinfo(skb)->nr_frags = i + 1;
3303 }
3304
3305 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3306 {
3307         a >>= PAGE_SHIFT;
3308         a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3309
3310         return a & (MAX_RBR_RING_SIZE - 1);
3311 }
3312
3313 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3314                                     struct page ***link)
3315 {
3316         unsigned int h = niu_hash_rxaddr(rp, addr);
3317         struct page *p, **pp;
3318
3319         addr &= PAGE_MASK;
3320         pp = &rp->rxhash[h];
3321         for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3322                 if (p->index == addr) {
3323                         *link = pp;
3324                         goto found;
3325                 }
3326         }
3327         BUG();
3328
3329 found:
3330         return p;
3331 }
3332
3333 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3334 {
3335         unsigned int h = niu_hash_rxaddr(rp, base);
3336
3337         page->index = base;
3338         page->mapping = (struct address_space *) rp->rxhash[h];
3339         rp->rxhash[h] = page;
3340 }
3341
3342 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3343                             gfp_t mask, int start_index)
3344 {
3345         struct page *page;
3346         u64 addr;
3347         int i;
3348
3349         page = alloc_page(mask);
3350         if (!page)
3351                 return -ENOMEM;
3352
3353         addr = np->ops->map_page(np->device, page, 0,
3354                                  PAGE_SIZE, DMA_FROM_DEVICE);
3355
3356         niu_hash_page(rp, page, addr);
3357         if (rp->rbr_blocks_per_page > 1)
3358                 atomic_add(rp->rbr_blocks_per_page - 1,
3359                            &compound_head(page)->_count);
3360
3361         for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3362                 __le32 *rbr = &rp->rbr[start_index + i];
3363
3364                 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3365                 addr += rp->rbr_block_size;
3366         }
3367
3368         return 0;
3369 }
3370
3371 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3372 {
3373         int index = rp->rbr_index;
3374
3375         rp->rbr_pending++;
3376         if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3377                 int err = niu_rbr_add_page(np, rp, mask, index);
3378
3379                 if (unlikely(err)) {
3380                         rp->rbr_pending--;
3381                         return;
3382                 }
3383
3384                 rp->rbr_index += rp->rbr_blocks_per_page;
3385                 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3386                 if (rp->rbr_index == rp->rbr_table_size)
3387                         rp->rbr_index = 0;
3388
3389                 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3390                         nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3391                         rp->rbr_pending = 0;
3392                 }
3393         }
3394 }
3395
3396 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3397 {
3398         unsigned int index = rp->rcr_index;
3399         int num_rcr = 0;
3400
3401         rp->rx_dropped++;
3402         while (1) {
3403                 struct page *page, **link;
3404                 u64 addr, val;
3405                 u32 rcr_size;
3406
3407                 num_rcr++;
3408
3409                 val = le64_to_cpup(&rp->rcr[index]);
3410                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3411                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3412                 page = niu_find_rxpage(rp, addr, &link);
3413
3414                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3415                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3416                 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3417                         *link = (struct page *) page->mapping;
3418                         np->ops->unmap_page(np->device, page->index,
3419                                             PAGE_SIZE, DMA_FROM_DEVICE);
3420                         page->index = 0;
3421                         page->mapping = NULL;
3422                         __free_page(page);
3423                         rp->rbr_refill_pending++;
3424                 }
3425
3426                 index = NEXT_RCR(rp, index);
3427                 if (!(val & RCR_ENTRY_MULTI))
3428                         break;
3429
3430         }
3431         rp->rcr_index = index;
3432
3433         return num_rcr;
3434 }
3435
3436 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3437                               struct rx_ring_info *rp)
3438 {
3439         unsigned int index = rp->rcr_index;
3440         struct rx_pkt_hdr1 *rh;
3441         struct sk_buff *skb;
3442         int len, num_rcr;
3443
3444         skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3445         if (unlikely(!skb))
3446                 return niu_rx_pkt_ignore(np, rp);
3447
3448         num_rcr = 0;
3449         while (1) {
3450                 struct page *page, **link;
3451                 u32 rcr_size, append_size;
3452                 u64 addr, val, off;
3453
3454                 num_rcr++;
3455
3456                 val = le64_to_cpup(&rp->rcr[index]);
3457
3458                 len = (val & RCR_ENTRY_L2_LEN) >>
3459                         RCR_ENTRY_L2_LEN_SHIFT;
3460                 len -= ETH_FCS_LEN;
3461
3462                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3463                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3464                 page = niu_find_rxpage(rp, addr, &link);
3465
3466                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3467                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3468
3469                 off = addr & ~PAGE_MASK;
3470                 append_size = rcr_size;
3471                 if (num_rcr == 1) {
3472                         int ptype;
3473
3474                         ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3475                         if ((ptype == RCR_PKT_TYPE_TCP ||
3476                              ptype == RCR_PKT_TYPE_UDP) &&
3477                             !(val & (RCR_ENTRY_NOPORT |
3478                                      RCR_ENTRY_ERROR)))
3479                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3480                         else
3481                                 skb_checksum_none_assert(skb);
3482                 } else if (!(val & RCR_ENTRY_MULTI))
3483                         append_size = len - skb->len;
3484
3485                 niu_rx_skb_append(skb, page, off, append_size);
3486                 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3487                         *link = (struct page *) page->mapping;
3488                         np->ops->unmap_page(np->device, page->index,
3489                                             PAGE_SIZE, DMA_FROM_DEVICE);
3490                         page->index = 0;
3491                         page->mapping = NULL;
3492                         rp->rbr_refill_pending++;
3493                 } else
3494                         get_page(page);
3495
3496                 index = NEXT_RCR(rp, index);
3497                 if (!(val & RCR_ENTRY_MULTI))
3498                         break;
3499
3500         }
3501         rp->rcr_index = index;
3502
3503         len += sizeof(*rh);
3504         len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3505         __pskb_pull_tail(skb, len);
3506
3507         rh = (struct rx_pkt_hdr1 *) skb->data;
3508         if (np->dev->features & NETIF_F_RXHASH)
3509                 skb->rxhash = ((u32)rh->hashval2_0 << 24 |
3510                                (u32)rh->hashval2_1 << 16 |
3511                                (u32)rh->hashval1_1 << 8 |
3512                                (u32)rh->hashval1_2 << 0);
3513         skb_pull(skb, sizeof(*rh));
3514
3515         rp->rx_packets++;
3516         rp->rx_bytes += skb->len;
3517
3518         skb->protocol = eth_type_trans(skb, np->dev);
3519         skb_record_rx_queue(skb, rp->rx_channel);
3520         napi_gro_receive(napi, skb);
3521
3522         return num_rcr;
3523 }
3524
3525 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3526 {
3527         int blocks_per_page = rp->rbr_blocks_per_page;
3528         int err, index = rp->rbr_index;
3529
3530         err = 0;
3531         while (index < (rp->rbr_table_size - blocks_per_page)) {
3532                 err = niu_rbr_add_page(np, rp, mask, index);
3533                 if (err)
3534                         break;
3535
3536                 index += blocks_per_page;
3537         }
3538
3539         rp->rbr_index = index;
3540         return err;
3541 }
3542
3543 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3544 {
3545         int i;
3546
3547         for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3548                 struct page *page;
3549
3550                 page = rp->rxhash[i];
3551                 while (page) {
3552                         struct page *next = (struct page *) page->mapping;
3553                         u64 base = page->index;
3554
3555                         np->ops->unmap_page(np->device, base, PAGE_SIZE,
3556                                             DMA_FROM_DEVICE);
3557                         page->index = 0;
3558                         page->mapping = NULL;
3559
3560                         __free_page(page);
3561
3562                         page = next;
3563                 }
3564         }
3565
3566         for (i = 0; i < rp->rbr_table_size; i++)
3567                 rp->rbr[i] = cpu_to_le32(0);
3568         rp->rbr_index = 0;
3569 }
3570
3571 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3572 {
3573         struct tx_buff_info *tb = &rp->tx_buffs[idx];
3574         struct sk_buff *skb = tb->skb;
3575         struct tx_pkt_hdr *tp;
3576         u64 tx_flags;
3577         int i, len;
3578
3579         tp = (struct tx_pkt_hdr *) skb->data;
3580         tx_flags = le64_to_cpup(&tp->flags);
3581
3582         rp->tx_packets++;
3583         rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3584                          ((tx_flags & TXHDR_PAD) / 2));
3585
3586         len = skb_headlen(skb);
3587         np->ops->unmap_single(np->device, tb->mapping,
3588                               len, DMA_TO_DEVICE);
3589
3590         if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3591                 rp->mark_pending--;
3592
3593         tb->skb = NULL;
3594         do {
3595                 idx = NEXT_TX(rp, idx);
3596                 len -= MAX_TX_DESC_LEN;
3597         } while (len > 0);
3598
3599         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3600                 tb = &rp->tx_buffs[idx];
3601                 BUG_ON(tb->skb != NULL);
3602                 np->ops->unmap_page(np->device, tb->mapping,
3603                                     skb_shinfo(skb)->frags[i].size,
3604                                     DMA_TO_DEVICE);
3605                 idx = NEXT_TX(rp, idx);
3606         }
3607
3608         dev_kfree_skb(skb);
3609
3610         return idx;
3611 }
3612
3613 #define NIU_TX_WAKEUP_THRESH(rp)                ((rp)->pending / 4)
3614
3615 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3616 {
3617         struct netdev_queue *txq;
3618         u16 pkt_cnt, tmp;
3619         int cons, index;
3620         u64 cs;
3621
3622         index = (rp - np->tx_rings);
3623         txq = netdev_get_tx_queue(np->dev, index);
3624
3625         cs = rp->tx_cs;
3626         if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3627                 goto out;
3628
3629         tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3630         pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3631                 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3632
3633         rp->last_pkt_cnt = tmp;
3634
3635         cons = rp->cons;
3636
3637         netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3638                      "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3639
3640         while (pkt_cnt--)
3641                 cons = release_tx_packet(np, rp, cons);
3642
3643         rp->cons = cons;
3644         smp_mb();
3645
3646 out:
3647         if (unlikely(netif_tx_queue_stopped(txq) &&
3648                      (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3649                 __netif_tx_lock(txq, smp_processor_id());
3650                 if (netif_tx_queue_stopped(txq) &&
3651                     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3652                         netif_tx_wake_queue(txq);
3653                 __netif_tx_unlock(txq);
3654         }
3655 }
3656
3657 static inline void niu_sync_rx_discard_stats(struct niu *np,
3658                                              struct rx_ring_info *rp,
3659                                              const int limit)
3660 {
3661         /* This elaborate scheme is needed for reading the RX discard
3662          * counters, as they are only 16-bit and can overflow quickly,
3663          * and because the overflow indication bit is not usable as
3664          * the counter value does not wrap, but remains at max value
3665          * 0xFFFF.
3666          *
3667          * In theory and in practice counters can be lost in between
3668          * reading nr64() and clearing the counter nw64().  For this
3669          * reason, the number of counter clearings nw64() is
3670          * limited/reduced though the limit parameter.
3671          */
3672         int rx_channel = rp->rx_channel;
3673         u32 misc, wred;
3674
3675         /* RXMISC (Receive Miscellaneous Discard Count), covers the
3676          * following discard events: IPP (Input Port Process),
3677          * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3678          * Block Ring) prefetch buffer is empty.
3679          */
3680         misc = nr64(RXMISC(rx_channel));
3681         if (unlikely((misc & RXMISC_COUNT) > limit)) {
3682                 nw64(RXMISC(rx_channel), 0);
3683                 rp->rx_errors += misc & RXMISC_COUNT;
3684
3685                 if (unlikely(misc & RXMISC_OFLOW))
3686                         dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3687                                 rx_channel);
3688
3689                 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3690                              "rx-%d: MISC drop=%u over=%u\n",
3691                              rx_channel, misc, misc-limit);
3692         }
3693
3694         /* WRED (Weighted Random Early Discard) by hardware */
3695         wred = nr64(RED_DIS_CNT(rx_channel));
3696         if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3697                 nw64(RED_DIS_CNT(rx_channel), 0);
3698                 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3699
3700                 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3701                         dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3702
3703                 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3704                              "rx-%d: WRED drop=%u over=%u\n",
3705                              rx_channel, wred, wred-limit);
3706         }
3707 }
3708
3709 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3710                        struct rx_ring_info *rp, int budget)
3711 {
3712         int qlen, rcr_done = 0, work_done = 0;
3713         struct rxdma_mailbox *mbox = rp->mbox;
3714         u64 stat;
3715
3716 #if 1
3717         stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3718         qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3719 #else
3720         stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3721         qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3722 #endif
3723         mbox->rx_dma_ctl_stat = 0;
3724         mbox->rcrstat_a = 0;
3725
3726         netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3727                      "%s(chan[%d]), stat[%llx] qlen=%d\n",
3728                      __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3729
3730         rcr_done = work_done = 0;
3731         qlen = min(qlen, budget);
3732         while (work_done < qlen) {
3733                 rcr_done += niu_process_rx_pkt(napi, np, rp);
3734                 work_done++;
3735         }
3736
3737         if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3738                 unsigned int i;
3739
3740                 for (i = 0; i < rp->rbr_refill_pending; i++)
3741                         niu_rbr_refill(np, rp, GFP_ATOMIC);
3742                 rp->rbr_refill_pending = 0;
3743         }
3744
3745         stat = (RX_DMA_CTL_STAT_MEX |
3746                 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3747                 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3748
3749         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3750
3751         /* Only sync discards stats when qlen indicate potential for drops */
3752         if (qlen > 10)
3753                 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3754
3755         return work_done;
3756 }
3757
3758 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3759 {
3760         u64 v0 = lp->v0;
3761         u32 tx_vec = (v0 >> 32);
3762         u32 rx_vec = (v0 & 0xffffffff);
3763         int i, work_done = 0;
3764
3765         netif_printk(np, intr, KERN_DEBUG, np->dev,
3766                      "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3767
3768         for (i = 0; i < np->num_tx_rings; i++) {
3769                 struct tx_ring_info *rp = &np->tx_rings[i];
3770                 if (tx_vec & (1 << rp->tx_channel))
3771                         niu_tx_work(np, rp);
3772                 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3773         }
3774
3775         for (i = 0; i < np->num_rx_rings; i++) {
3776                 struct rx_ring_info *rp = &np->rx_rings[i];
3777
3778                 if (rx_vec & (1 << rp->rx_channel)) {
3779                         int this_work_done;
3780
3781                         this_work_done = niu_rx_work(&lp->napi, np, rp,
3782                                                      budget);
3783
3784                         budget -= this_work_done;
3785                         work_done += this_work_done;
3786                 }
3787                 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3788         }
3789
3790         return work_done;
3791 }
3792
3793 static int niu_poll(struct napi_struct *napi, int budget)
3794 {
3795         struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3796         struct niu *np = lp->np;
3797         int work_done;
3798
3799         work_done = niu_poll_core(np, lp, budget);
3800
3801         if (work_done < budget) {
3802                 napi_complete(napi);
3803                 niu_ldg_rearm(np, lp, 1);
3804         }
3805         return work_done;
3806 }
3807
3808 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3809                                   u64 stat)
3810 {
3811         netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3812
3813         if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3814                 pr_cont("RBR_TMOUT ");
3815         if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3816                 pr_cont("RSP_CNT ");
3817         if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3818                 pr_cont("BYTE_EN_BUS ");
3819         if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3820                 pr_cont("RSP_DAT ");
3821         if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3822                 pr_cont("RCR_ACK ");
3823         if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3824                 pr_cont("RCR_SHA_PAR ");
3825         if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3826                 pr_cont("RBR_PRE_PAR ");
3827         if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3828                 pr_cont("CONFIG ");
3829         if (stat & RX_DMA_CTL_STAT_RCRINCON)
3830                 pr_cont("RCRINCON ");
3831         if (stat & RX_DMA_CTL_STAT_RCRFULL)
3832                 pr_cont("RCRFULL ");
3833         if (stat & RX_DMA_CTL_STAT_RBRFULL)
3834                 pr_cont("RBRFULL ");
3835         if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3836                 pr_cont("RBRLOGPAGE ");
3837         if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3838                 pr_cont("CFIGLOGPAGE ");
3839         if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3840                 pr_cont("DC_FIDO ");
3841
3842         pr_cont(")\n");
3843 }
3844
3845 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3846 {
3847         u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3848         int err = 0;
3849
3850
3851         if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3852                     RX_DMA_CTL_STAT_PORT_FATAL))
3853                 err = -EINVAL;
3854
3855         if (err) {
3856                 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3857                            rp->rx_channel,
3858                            (unsigned long long) stat);
3859
3860                 niu_log_rxchan_errors(np, rp, stat);
3861         }
3862
3863         nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3864              stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3865
3866         return err;
3867 }
3868
3869 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3870                                   u64 cs)
3871 {
3872         netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3873
3874         if (cs & TX_CS_MBOX_ERR)
3875                 pr_cont("MBOX ");
3876         if (cs & TX_CS_PKT_SIZE_ERR)
3877                 pr_cont("PKT_SIZE ");
3878         if (cs & TX_CS_TX_RING_OFLOW)
3879                 pr_cont("TX_RING_OFLOW ");
3880         if (cs & TX_CS_PREF_BUF_PAR_ERR)
3881                 pr_cont("PREF_BUF_PAR ");
3882         if (cs & TX_CS_NACK_PREF)
3883                 pr_cont("NACK_PREF ");
3884         if (cs & TX_CS_NACK_PKT_RD)
3885                 pr_cont("NACK_PKT_RD ");
3886         if (cs & TX_CS_CONF_PART_ERR)
3887                 pr_cont("CONF_PART ");
3888         if (cs & TX_CS_PKT_PRT_ERR)
3889                 pr_cont("PKT_PTR ");
3890
3891         pr_cont(")\n");
3892 }
3893
3894 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3895 {
3896         u64 cs, logh, logl;
3897
3898         cs = nr64(TX_CS(rp->tx_channel));
3899         logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3900         logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3901
3902         netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3903                    rp->tx_channel,
3904                    (unsigned long long)cs,
3905                    (unsigned long long)logh,
3906                    (unsigned long long)logl);
3907
3908         niu_log_txchan_errors(np, rp, cs);
3909
3910         return -ENODEV;
3911 }
3912
3913 static int niu_mif_interrupt(struct niu *np)
3914 {
3915         u64 mif_status = nr64(MIF_STATUS);
3916         int phy_mdint = 0;
3917
3918         if (np->flags & NIU_FLAGS_XMAC) {
3919                 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3920
3921                 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3922                         phy_mdint = 1;
3923         }
3924
3925         netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3926                    (unsigned long long)mif_status, phy_mdint);
3927
3928         return -ENODEV;
3929 }
3930
3931 static void niu_xmac_interrupt(struct niu *np)
3932 {
3933         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3934         u64 val;
3935
3936         val = nr64_mac(XTXMAC_STATUS);
3937         if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3938                 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3939         if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3940                 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3941         if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3942                 mp->tx_fifo_errors++;
3943         if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3944                 mp->tx_overflow_errors++;
3945         if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3946                 mp->tx_max_pkt_size_errors++;
3947         if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3948                 mp->tx_underflow_errors++;
3949
3950         val = nr64_mac(XRXMAC_STATUS);
3951         if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3952                 mp->rx_local_faults++;
3953         if (val & XRXMAC_STATUS_RFLT_DET)
3954                 mp->rx_remote_faults++;
3955         if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3956                 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3957         if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3958                 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3959         if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3960                 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3961         if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3962                 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3963         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3964                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3965         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3966                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3967         if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3968                 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3969         if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3970                 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3971         if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3972                 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3973         if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3974                 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3975         if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3976                 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3977         if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3978                 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3979         if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3980                 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3981         if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3982                 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3983         if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3984                 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3985         if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3986                 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3987         if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3988                 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3989         if (val & XRXMAC_STATUS_RXUFLOW)
3990                 mp->rx_underflows++;
3991         if (val & XRXMAC_STATUS_RXOFLOW)
3992                 mp->rx_overflows++;
3993
3994         val = nr64_mac(XMAC_FC_STAT);
3995         if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
3996                 mp->pause_off_state++;
3997         if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
3998                 mp->pause_on_state++;
3999         if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
4000                 mp->pause_received++;
4001 }
4002
4003 static void niu_bmac_interrupt(struct niu *np)
4004 {
4005         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4006         u64 val;
4007
4008         val = nr64_mac(BTXMAC_STATUS);
4009         if (val & BTXMAC_STATUS_UNDERRUN)
4010                 mp->tx_underflow_errors++;
4011         if (val & BTXMAC_STATUS_MAX_PKT_ERR)
4012                 mp->tx_max_pkt_size_errors++;
4013         if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4014                 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4015         if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4016                 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4017
4018         val = nr64_mac(BRXMAC_STATUS);
4019         if (val & BRXMAC_STATUS_OVERFLOW)
4020                 mp->rx_overflows++;
4021         if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4022                 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4023         if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4024                 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4025         if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4026                 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4027         if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4028                 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4029
4030         val = nr64_mac(BMAC_CTRL_STATUS);
4031         if (val & BMAC_CTRL_STATUS_NOPAUSE)
4032                 mp->pause_off_state++;
4033         if (val & BMAC_CTRL_STATUS_PAUSE)
4034                 mp->pause_on_state++;
4035         if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4036                 mp->pause_received++;
4037 }
4038
4039 static int niu_mac_interrupt(struct niu *np)
4040 {
4041         if (np->flags & NIU_FLAGS_XMAC)
4042                 niu_xmac_interrupt(np);
4043         else
4044                 niu_bmac_interrupt(np);
4045
4046         return 0;
4047 }
4048
4049 static void niu_log_device_error(struct niu *np, u64 stat)
4050 {
4051         netdev_err(np->dev, "Core device errors ( ");
4052
4053         if (stat & SYS_ERR_MASK_META2)
4054                 pr_cont("META2 ");
4055         if (stat & SYS_ERR_MASK_META1)
4056                 pr_cont("META1 ");
4057         if (stat & SYS_ERR_MASK_PEU)
4058                 pr_cont("PEU ");
4059         if (stat & SYS_ERR_MASK_TXC)
4060                 pr_cont("TXC ");
4061         if (stat & SYS_ERR_MASK_RDMC)
4062                 pr_cont("RDMC ");
4063         if (stat & SYS_ERR_MASK_TDMC)
4064                 pr_cont("TDMC ");
4065         if (stat & SYS_ERR_MASK_ZCP)
4066                 pr_cont("ZCP ");
4067         if (stat & SYS_ERR_MASK_FFLP)
4068                 pr_cont("FFLP ");
4069         if (stat & SYS_ERR_MASK_IPP)
4070                 pr_cont("IPP ");
4071         if (stat & SYS_ERR_MASK_MAC)
4072                 pr_cont("MAC ");
4073         if (stat & SYS_ERR_MASK_SMX)
4074                 pr_cont("SMX ");
4075
4076         pr_cont(")\n");
4077 }
4078
4079 static int niu_device_error(struct niu *np)
4080 {
4081         u64 stat = nr64(SYS_ERR_STAT);
4082
4083         netdev_err(np->dev, "Core device error, stat[%llx]\n",
4084                    (unsigned long long)stat);
4085
4086         niu_log_device_error(np, stat);
4087
4088         return -ENODEV;
4089 }
4090
4091 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4092                               u64 v0, u64 v1, u64 v2)
4093 {
4094
4095         int i, err = 0;
4096
4097         lp->v0 = v0;
4098         lp->v1 = v1;
4099         lp->v2 = v2;
4100
4101         if (v1 & 0x00000000ffffffffULL) {
4102                 u32 rx_vec = (v1 & 0xffffffff);
4103
4104                 for (i = 0; i < np->num_rx_rings; i++) {
4105                         struct rx_ring_info *rp = &np->rx_rings[i];
4106
4107                         if (rx_vec & (1 << rp->rx_channel)) {
4108                                 int r = niu_rx_error(np, rp);
4109                                 if (r) {
4110                                         err = r;
4111                                 } else {
4112                                         if (!v0)
4113                                                 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4114                                                      RX_DMA_CTL_STAT_MEX);
4115                                 }
4116                         }
4117                 }
4118         }
4119         if (v1 & 0x7fffffff00000000ULL) {
4120                 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4121
4122                 for (i = 0; i < np->num_tx_rings; i++) {
4123                         struct tx_ring_info *rp = &np->tx_rings[i];
4124
4125                         if (tx_vec & (1 << rp->tx_channel)) {
4126                                 int r = niu_tx_error(np, rp);
4127                                 if (r)
4128                                         err = r;
4129                         }
4130                 }
4131         }
4132         if ((v0 | v1) & 0x8000000000000000ULL) {
4133                 int r = niu_mif_interrupt(np);
4134                 if (r)
4135                         err = r;
4136         }
4137         if (v2) {
4138                 if (v2 & 0x01ef) {
4139                         int r = niu_mac_interrupt(np);
4140                         if (r)
4141                                 err = r;
4142                 }
4143                 if (v2 & 0x0210) {
4144                         int r = niu_device_error(np);
4145                         if (r)
4146                                 err = r;
4147                 }
4148         }
4149
4150         if (err)
4151                 niu_enable_interrupts(np, 0);
4152
4153         return err;
4154 }
4155
4156 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4157                             int ldn)
4158 {
4159         struct rxdma_mailbox *mbox = rp->mbox;
4160         u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4161
4162         stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4163                       RX_DMA_CTL_STAT_RCRTO);
4164         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4165
4166         netif_printk(np, intr, KERN_DEBUG, np->dev,
4167                      "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4168 }
4169
4170 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4171                             int ldn)
4172 {
4173         rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4174
4175         netif_printk(np, intr, KERN_DEBUG, np->dev,
4176                      "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4177 }
4178
4179 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4180 {
4181         struct niu_parent *parent = np->parent;
4182         u32 rx_vec, tx_vec;
4183         int i;
4184
4185         tx_vec = (v0 >> 32);
4186         rx_vec = (v0 & 0xffffffff);
4187
4188         for (i = 0; i < np->num_rx_rings; i++) {
4189                 struct rx_ring_info *rp = &np->rx_rings[i];
4190                 int ldn = LDN_RXDMA(rp->rx_channel);
4191
4192                 if (parent->ldg_map[ldn] != ldg)
4193                         continue;
4194
4195                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4196                 if (rx_vec & (1 << rp->rx_channel))
4197                         niu_rxchan_intr(np, rp, ldn);
4198         }
4199
4200         for (i = 0; i < np->num_tx_rings; i++) {
4201                 struct tx_ring_info *rp = &np->tx_rings[i];
4202                 int ldn = LDN_TXDMA(rp->tx_channel);
4203
4204                 if (parent->ldg_map[ldn] != ldg)
4205                         continue;
4206
4207                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4208                 if (tx_vec & (1 << rp->tx_channel))
4209                         niu_txchan_intr(np, rp, ldn);
4210         }
4211 }
4212
4213 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4214                               u64 v0, u64 v1, u64 v2)
4215 {
4216         if (likely(napi_schedule_prep(&lp->napi))) {
4217                 lp->v0 = v0;
4218                 lp->v1 = v1;
4219                 lp->v2 = v2;
4220                 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4221                 __napi_schedule(&lp->napi);
4222         }
4223 }
4224
4225 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4226 {
4227         struct niu_ldg *lp = dev_id;
4228         struct niu *np = lp->np;
4229         int ldg = lp->ldg_num;
4230         unsigned long flags;
4231         u64 v0, v1, v2;
4232
4233         if (netif_msg_intr(np))
4234                 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4235                        __func__, lp, ldg);
4236
4237         spin_lock_irqsave(&np->lock, flags);
4238
4239         v0 = nr64(LDSV0(ldg));
4240         v1 = nr64(LDSV1(ldg));
4241         v2 = nr64(LDSV2(ldg));
4242
4243         if (netif_msg_intr(np))
4244                 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4245                        (unsigned long long) v0,
4246                        (unsigned long long) v1,
4247                        (unsigned long long) v2);
4248
4249         if (unlikely(!v0 && !v1 && !v2)) {
4250                 spin_unlock_irqrestore(&np->lock, flags);
4251                 return IRQ_NONE;
4252         }
4253
4254         if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4255                 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4256                 if (err)
4257                         goto out;
4258         }
4259         if (likely(v0 & ~((u64)1 << LDN_MIF)))
4260                 niu_schedule_napi(np, lp, v0, v1, v2);
4261         else
4262                 niu_ldg_rearm(np, lp, 1);
4263 out:
4264         spin_unlock_irqrestore(&np->lock, flags);
4265
4266         return IRQ_HANDLED;
4267 }
4268
4269 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4270 {
4271         if (rp->mbox) {
4272                 np->ops->free_coherent(np->device,
4273                                        sizeof(struct rxdma_mailbox),
4274                                        rp->mbox, rp->mbox_dma);
4275                 rp->mbox = NULL;
4276         }
4277         if (rp->rcr) {
4278                 np->ops->free_coherent(np->device,
4279                                        MAX_RCR_RING_SIZE * sizeof(__le64),
4280                                        rp->rcr, rp->rcr_dma);
4281                 rp->rcr = NULL;
4282                 rp->rcr_table_size = 0;
4283                 rp->rcr_index = 0;
4284         }
4285         if (rp->rbr) {
4286                 niu_rbr_free(np, rp);
4287
4288                 np->ops->free_coherent(np->device,
4289                                        MAX_RBR_RING_SIZE * sizeof(__le32),
4290                                        rp->rbr, rp->rbr_dma);
4291                 rp->rbr = NULL;
4292                 rp->rbr_table_size = 0;
4293                 rp->rbr_index = 0;
4294         }
4295         kfree(rp->rxhash);
4296         rp->rxhash = NULL;
4297 }
4298
4299 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4300 {
4301         if (rp->mbox) {
4302                 np->ops->free_coherent(np->device,
4303                                        sizeof(struct txdma_mailbox),
4304                                        rp->mbox, rp->mbox_dma);
4305                 rp->mbox = NULL;
4306         }
4307         if (rp->descr) {
4308                 int i;
4309
4310                 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4311                         if (rp->tx_buffs[i].skb)
4312                                 (void) release_tx_packet(np, rp, i);
4313                 }
4314
4315                 np->ops->free_coherent(np->device,
4316                                        MAX_TX_RING_SIZE * sizeof(__le64),
4317                                        rp->descr, rp->descr_dma);
4318                 rp->descr = NULL;
4319                 rp->pending = 0;
4320                 rp->prod = 0;
4321                 rp->cons = 0;
4322                 rp->wrap_bit = 0;
4323         }
4324 }
4325
4326 static void niu_free_channels(struct niu *np)
4327 {
4328         int i;
4329
4330         if (np->rx_rings) {
4331                 for (i = 0; i < np->num_rx_rings; i++) {
4332                         struct rx_ring_info *rp = &np->rx_rings[i];
4333
4334                         niu_free_rx_ring_info(np, rp);
4335                 }
4336                 kfree(np->rx_rings);
4337                 np->rx_rings = NULL;
4338                 np->num_rx_rings = 0;
4339         }
4340
4341         if (np->tx_rings) {
4342                 for (i = 0; i < np->num_tx_rings; i++) {
4343                         struct tx_ring_info *rp = &np->tx_rings[i];
4344
4345                         niu_free_tx_ring_info(np, rp);
4346                 }
4347                 kfree(np->tx_rings);
4348                 np->tx_rings = NULL;
4349                 np->num_tx_rings = 0;
4350         }
4351 }
4352
4353 static int niu_alloc_rx_ring_info(struct niu *np,
4354                                   struct rx_ring_info *rp)
4355 {
4356         BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4357
4358         rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4359                              GFP_KERNEL);
4360         if (!rp->rxhash)
4361                 return -ENOMEM;
4362
4363         rp->mbox = np->ops->alloc_coherent(np->device,
4364                                            sizeof(struct rxdma_mailbox),
4365                                            &rp->mbox_dma, GFP_KERNEL);
4366         if (!rp->mbox)
4367                 return -ENOMEM;
4368         if ((unsigned long)rp->mbox & (64UL - 1)) {
4369                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4370                            rp->mbox);
4371                 return -EINVAL;
4372         }
4373
4374         rp->rcr = np->ops->alloc_coherent(np->device,
4375                                           MAX_RCR_RING_SIZE * sizeof(__le64),
4376                                           &rp->rcr_dma, GFP_KERNEL);
4377         if (!rp->rcr)
4378                 return -ENOMEM;
4379         if ((unsigned long)rp->rcr & (64UL - 1)) {
4380                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4381                            rp->rcr);
4382                 return -EINVAL;
4383         }
4384         rp->rcr_table_size = MAX_RCR_RING_SIZE;
4385         rp->rcr_index = 0;
4386
4387         rp->rbr = np->ops->alloc_coherent(np->device,
4388                                           MAX_RBR_RING_SIZE * sizeof(__le32),
4389                                           &rp->rbr_dma, GFP_KERNEL);
4390         if (!rp->rbr)
4391                 return -ENOMEM;
4392         if ((unsigned long)rp->rbr & (64UL - 1)) {
4393                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4394                            rp->rbr);
4395                 return -EINVAL;
4396         }
4397         rp->rbr_table_size = MAX_RBR_RING_SIZE;
4398         rp->rbr_index = 0;
4399         rp->rbr_pending = 0;
4400
4401         return 0;
4402 }
4403
4404 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4405 {
4406         int mtu = np->dev->mtu;
4407
4408         /* These values are recommended by the HW designers for fair
4409          * utilization of DRR amongst the rings.
4410          */
4411         rp->max_burst = mtu + 32;
4412         if (rp->max_burst > 4096)
4413                 rp->max_burst = 4096;
4414 }
4415
4416 static int niu_alloc_tx_ring_info(struct niu *np,
4417                                   struct tx_ring_info *rp)
4418 {
4419         BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4420
4421         rp->mbox = np->ops->alloc_coherent(np->device,
4422                                            sizeof(struct txdma_mailbox),
4423                                            &rp->mbox_dma, GFP_KERNEL);
4424         if (!rp->mbox)
4425                 return -ENOMEM;
4426         if ((unsigned long)rp->mbox & (64UL - 1)) {
4427                 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4428                            rp->mbox);
4429                 return -EINVAL;
4430         }
4431
4432         rp->descr = np->ops->alloc_coherent(np->device,
4433                                             MAX_TX_RING_SIZE * sizeof(__le64),
4434                                             &rp->descr_dma, GFP_KERNEL);
4435         if (!rp->descr)
4436                 return -ENOMEM;
4437         if ((unsigned long)rp->descr & (64UL - 1)) {
4438                 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4439                            rp->descr);
4440                 return -EINVAL;
4441         }
4442
4443         rp->pending = MAX_TX_RING_SIZE;
4444         rp->prod = 0;
4445         rp->cons = 0;
4446         rp->wrap_bit = 0;
4447
4448         /* XXX make these configurable... XXX */
4449         rp->mark_freq = rp->pending / 4;
4450
4451         niu_set_max_burst(np, rp);
4452
4453         return 0;
4454 }
4455
4456 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4457 {
4458         u16 bss;
4459
4460         bss = min(PAGE_SHIFT, 15);
4461
4462         rp->rbr_block_size = 1 << bss;
4463         rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4464
4465         rp->rbr_sizes[0] = 256;
4466         rp->rbr_sizes[1] = 1024;
4467         if (np->dev->mtu > ETH_DATA_LEN) {
4468                 switch (PAGE_SIZE) {
4469                 case 4 * 1024:
4470                         rp->rbr_sizes[2] = 4096;
4471                         break;
4472
4473                 default:
4474                         rp->rbr_sizes[2] = 8192;
4475                         break;
4476                 }
4477         } else {
4478                 rp->rbr_sizes[2] = 2048;
4479         }
4480         rp->rbr_sizes[3] = rp->rbr_block_size;
4481 }
4482
4483 static int niu_alloc_channels(struct niu *np)
4484 {
4485         struct niu_parent *parent = np->parent;
4486         int first_rx_channel, first_tx_channel;
4487         int num_rx_rings, num_tx_rings;
4488         struct rx_ring_info *rx_rings;
4489         struct tx_ring_info *tx_rings;
4490         int i, port, err;
4491
4492         port = np->port;
4493         first_rx_channel = first_tx_channel = 0;
4494         for (i = 0; i < port; i++) {
4495                 first_rx_channel += parent->rxchan_per_port[i];
4496                 first_tx_channel += parent->txchan_per_port[i];
4497         }
4498
4499         num_rx_rings = parent->rxchan_per_port[port];
4500         num_tx_rings = parent->txchan_per_port[port];
4501
4502         rx_rings = kcalloc(num_rx_rings, sizeof(struct rx_ring_info),
4503                            GFP_KERNEL);
4504         err = -ENOMEM;
4505         if (!rx_rings)
4506                 goto out_err;
4507
4508         np->num_rx_rings = num_rx_rings;
4509         smp_wmb();
4510         np->rx_rings = rx_rings;
4511
4512         netif_set_real_num_rx_queues(np->dev, num_rx_rings);
4513
4514         for (i = 0; i < np->num_rx_rings; i++) {
4515                 struct rx_ring_info *rp = &np->rx_rings[i];
4516
4517                 rp->np = np;
4518                 rp->rx_channel = first_rx_channel + i;
4519
4520                 err = niu_alloc_rx_ring_info(np, rp);
4521                 if (err)
4522                         goto out_err;
4523
4524                 niu_size_rbr(np, rp);
4525
4526                 /* XXX better defaults, configurable, etc... XXX */
4527                 rp->nonsyn_window = 64;
4528                 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4529                 rp->syn_window = 64;
4530                 rp->syn_threshold = rp->rcr_table_size - 64;
4531                 rp->rcr_pkt_threshold = 16;
4532                 rp->rcr_timeout = 8;
4533                 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4534                 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4535                         rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4536
4537                 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4538                 if (err)
4539                         return err;
4540         }
4541
4542         tx_rings = kcalloc(num_tx_rings, sizeof(struct tx_ring_info),
4543                            GFP_KERNEL);
4544         err = -ENOMEM;
4545         if (!tx_rings)
4546                 goto out_err;
4547
4548         np->num_tx_rings = num_tx_rings;
4549         smp_wmb();
4550         np->tx_rings = tx_rings;
4551
4552         netif_set_real_num_tx_queues(np->dev, num_tx_rings);
4553
4554         for (i = 0; i < np->num_tx_rings; i++) {
4555                 struct tx_ring_info *rp = &np->tx_rings[i];
4556
4557                 rp->np = np;
4558                 rp->tx_channel = first_tx_channel + i;
4559
4560                 err = niu_alloc_tx_ring_info(np, rp);
4561                 if (err)
4562                         goto out_err;
4563         }
4564
4565         return 0;
4566
4567 out_err:
4568         niu_free_channels(np);
4569         return err;
4570 }
4571
4572 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4573 {
4574         int limit = 1000;
4575
4576         while (--limit > 0) {
4577                 u64 val = nr64(TX_CS(channel));
4578                 if (val & TX_CS_SNG_STATE)
4579                         return 0;
4580         }
4581         return -ENODEV;
4582 }
4583
4584 static int niu_tx_channel_stop(struct niu *np, int channel)
4585 {
4586         u64 val = nr64(TX_CS(channel));
4587
4588         val |= TX_CS_STOP_N_GO;
4589         nw64(TX_CS(channel), val);
4590
4591         return niu_tx_cs_sng_poll(np, channel);
4592 }
4593
4594 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4595 {
4596         int limit = 1000;
4597
4598         while (--limit > 0) {
4599                 u64 val = nr64(TX_CS(channel));
4600                 if (!(val & TX_CS_RST))
4601                         return 0;
4602         }
4603         return -ENODEV;
4604 }
4605
4606 static int niu_tx_channel_reset(struct niu *np, int channel)
4607 {
4608         u64 val = nr64(TX_CS(channel));
4609         int err;
4610
4611         val |= TX_CS_RST;
4612         nw64(TX_CS(channel), val);
4613
4614         err = niu_tx_cs_reset_poll(np, channel);
4615         if (!err)
4616                 nw64(TX_RING_KICK(channel), 0);
4617
4618         return err;
4619 }
4620
4621 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4622 {
4623         u64 val;
4624
4625         nw64(TX_LOG_MASK1(channel), 0);
4626         nw64(TX_LOG_VAL1(channel), 0);
4627         nw64(TX_LOG_MASK2(channel), 0);
4628         nw64(TX_LOG_VAL2(channel), 0);
4629         nw64(TX_LOG_PAGE_RELO1(channel), 0);
4630         nw64(TX_LOG_PAGE_RELO2(channel), 0);
4631         nw64(TX_LOG_PAGE_HDL(channel), 0);
4632
4633         val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4634         val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4635         nw64(TX_LOG_PAGE_VLD(channel), val);
4636
4637         /* XXX TXDMA 32bit mode? XXX */
4638
4639         return 0;
4640 }
4641
4642 static void niu_txc_enable_port(struct niu *np, int on)
4643 {
4644         unsigned long flags;
4645         u64 val, mask;
4646
4647         niu_lock_parent(np, flags);
4648         val = nr64(TXC_CONTROL);
4649         mask = (u64)1 << np->port;
4650         if (on) {
4651                 val |= TXC_CONTROL_ENABLE | mask;
4652         } else {
4653                 val &= ~mask;
4654                 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4655                         val &= ~TXC_CONTROL_ENABLE;
4656         }
4657         nw64(TXC_CONTROL, val);
4658         niu_unlock_parent(np, flags);
4659 }
4660
4661 static void niu_txc_set_imask(struct niu *np, u64 imask)
4662 {
4663         unsigned long flags;
4664         u64 val;
4665
4666         niu_lock_parent(np, flags);
4667         val = nr64(TXC_INT_MASK);
4668         val &= ~TXC_INT_MASK_VAL(np->port);
4669         val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4670         niu_unlock_parent(np, flags);
4671 }
4672
4673 static void niu_txc_port_dma_enable(struct niu *np, int on)
4674 {
4675         u64 val = 0;
4676
4677         if (on) {
4678                 int i;
4679
4680                 for (i = 0; i < np->num_tx_rings; i++)
4681                         val |= (1 << np->tx_rings[i].tx_channel);
4682         }
4683         nw64(TXC_PORT_DMA(np->port), val);
4684 }
4685
4686 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4687 {
4688         int err, channel = rp->tx_channel;
4689         u64 val, ring_len;
4690
4691         err = niu_tx_channel_stop(np, channel);
4692         if (err)
4693                 return err;
4694
4695         err = niu_tx_channel_reset(np, channel);
4696         if (err)
4697                 return err;
4698
4699         err = niu_tx_channel_lpage_init(np, channel);
4700         if (err)
4701                 return err;
4702
4703         nw64(TXC_DMA_MAX(channel), rp->max_burst);
4704         nw64(TX_ENT_MSK(channel), 0);
4705
4706         if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4707                               TX_RNG_CFIG_STADDR)) {
4708                 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4709                            channel, (unsigned long long)rp->descr_dma);
4710                 return -EINVAL;
4711         }
4712
4713         /* The length field in TX_RNG_CFIG is measured in 64-byte
4714          * blocks.  rp->pending is the number of TX descriptors in
4715          * our ring, 8 bytes each, thus we divide by 8 bytes more
4716          * to get the proper value the chip wants.
4717          */
4718         ring_len = (rp->pending / 8);
4719
4720         val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4721                rp->descr_dma);
4722         nw64(TX_RNG_CFIG(channel), val);
4723
4724         if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4725             ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4726                 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4727                             channel, (unsigned long long)rp->mbox_dma);
4728                 return -EINVAL;
4729         }
4730         nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4731         nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4732
4733         nw64(TX_CS(channel), 0);
4734
4735         rp->last_pkt_cnt = 0;
4736
4737         return 0;
4738 }
4739
4740 static void niu_init_rdc_groups(struct niu *np)
4741 {
4742         struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4743         int i, first_table_num = tp->first_table_num;
4744
4745         for (i = 0; i < tp->num_tables; i++) {
4746                 struct rdc_table *tbl = &tp->tables[i];
4747                 int this_table = first_table_num + i;
4748                 int slot;
4749
4750                 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4751                         nw64(RDC_TBL(this_table, slot),
4752                              tbl->rxdma_channel[slot]);
4753         }
4754
4755         nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4756 }
4757
4758 static void niu_init_drr_weight(struct niu *np)
4759 {
4760         int type = phy_decode(np->parent->port_phy, np->port);
4761         u64 val;
4762
4763         switch (type) {
4764         case PORT_TYPE_10G:
4765                 val = PT_DRR_WEIGHT_DEFAULT_10G;
4766                 break;
4767
4768         case PORT_TYPE_1G:
4769         default:
4770                 val = PT_DRR_WEIGHT_DEFAULT_1G;
4771                 break;
4772         }
4773         nw64(PT_DRR_WT(np->port), val);
4774 }
4775
4776 static int niu_init_hostinfo(struct niu *np)
4777 {
4778         struct niu_parent *parent = np->parent;
4779         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4780         int i, err, num_alt = niu_num_alt_addr(np);
4781         int first_rdc_table = tp->first_table_num;
4782
4783         err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4784         if (err)
4785                 return err;
4786
4787         err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4788         if (err)
4789                 return err;
4790
4791         for (i = 0; i < num_alt; i++) {
4792                 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4793                 if (err)
4794                         return err;
4795         }
4796
4797         return 0;
4798 }
4799
4800 static int niu_rx_channel_reset(struct niu *np, int channel)
4801 {
4802         return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4803                                       RXDMA_CFIG1_RST, 1000, 10,
4804                                       "RXDMA_CFIG1");
4805 }
4806
4807 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4808 {
4809         u64 val;
4810
4811         nw64(RX_LOG_MASK1(channel), 0);
4812         nw64(RX_LOG_VAL1(channel), 0);
4813         nw64(RX_LOG_MASK2(channel), 0);
4814         nw64(RX_LOG_VAL2(channel), 0);
4815         nw64(RX_LOG_PAGE_RELO1(channel), 0);
4816         nw64(RX_LOG_PAGE_RELO2(channel), 0);
4817         nw64(RX_LOG_PAGE_HDL(channel), 0);
4818
4819         val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4820         val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4821         nw64(RX_LOG_PAGE_VLD(channel), val);
4822
4823         return 0;
4824 }
4825
4826 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4827 {
4828         u64 val;
4829
4830         val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4831                ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4832                ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4833                ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4834         nw64(RDC_RED_PARA(rp->rx_channel), val);
4835 }
4836
4837 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4838 {
4839         u64 val = 0;
4840
4841         *ret = 0;
4842         switch (rp->rbr_block_size) {
4843         case 4 * 1024:
4844                 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4845                 break;
4846         case 8 * 1024:
4847                 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4848                 break;
4849         case 16 * 1024:
4850                 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4851                 break;
4852         case 32 * 1024:
4853                 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4854                 break;
4855         default:
4856                 return -EINVAL;
4857         }
4858         val |= RBR_CFIG_B_VLD2;
4859         switch (rp->rbr_sizes[2]) {
4860         case 2 * 1024:
4861                 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4862                 break;
4863         case 4 * 1024:
4864                 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4865                 break;
4866         case 8 * 1024:
4867                 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4868                 break;
4869         case 16 * 1024:
4870                 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4871                 break;
4872
4873         default:
4874                 return -EINVAL;
4875         }
4876         val |= RBR_CFIG_B_VLD1;
4877         switch (rp->rbr_sizes[1]) {
4878         case 1 * 1024:
4879                 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4880                 break;
4881         case 2 * 1024:
4882                 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4883                 break;
4884         case 4 * 1024:
4885                 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4886                 break;
4887         case 8 * 1024:
4888                 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4889                 break;
4890
4891         default:
4892                 return -EINVAL;
4893         }
4894         val |= RBR_CFIG_B_VLD0;
4895         switch (rp->rbr_sizes[0]) {
4896         case 256:
4897                 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4898                 break;
4899         case 512:
4900                 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4901                 break;
4902         case 1 * 1024:
4903                 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4904                 break;
4905         case 2 * 1024:
4906                 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4907                 break;
4908
4909         default:
4910                 return -EINVAL;
4911         }
4912
4913         *ret = val;
4914         return 0;
4915 }
4916
4917 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4918 {
4919         u64 val = nr64(RXDMA_CFIG1(channel));
4920         int limit;
4921
4922         if (on)
4923                 val |= RXDMA_CFIG1_EN;
4924         else
4925                 val &= ~RXDMA_CFIG1_EN;
4926         nw64(RXDMA_CFIG1(channel), val);
4927
4928         limit = 1000;
4929         while (--limit > 0) {
4930                 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4931                         break;
4932                 udelay(10);
4933         }
4934         if (limit <= 0)
4935                 return -ENODEV;
4936         return 0;
4937 }
4938
4939 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4940 {
4941         int err, channel = rp->rx_channel;
4942         u64 val;
4943
4944         err = niu_rx_channel_reset(np, channel);
4945         if (err)
4946                 return err;
4947
4948         err = niu_rx_channel_lpage_init(np, channel);
4949         if (err)
4950                 return err;
4951
4952         niu_rx_channel_wred_init(np, rp);
4953
4954         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4955         nw64(RX_DMA_CTL_STAT(channel),
4956              (RX_DMA_CTL_STAT_MEX |
4957               RX_DMA_CTL_STAT_RCRTHRES |
4958               RX_DMA_CTL_STAT_RCRTO |
4959               RX_DMA_CTL_STAT_RBR_EMPTY));
4960         nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4961         nw64(RXDMA_CFIG2(channel),
4962              ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4963               RXDMA_CFIG2_FULL_HDR));
4964         nw64(RBR_CFIG_A(channel),
4965              ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4966              (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4967         err = niu_compute_rbr_cfig_b(rp, &val);
4968         if (err)
4969                 return err;
4970         nw64(RBR_CFIG_B(channel), val);
4971         nw64(RCRCFIG_A(channel),
4972              ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4973              (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4974         nw64(RCRCFIG_B(channel),
4975              ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4976              RCRCFIG_B_ENTOUT |
4977              ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4978
4979         err = niu_enable_rx_channel(np, channel, 1);
4980         if (err)
4981                 return err;
4982
4983         nw64(RBR_KICK(channel), rp->rbr_index);
4984
4985         val = nr64(RX_DMA_CTL_STAT(channel));
4986         val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4987         nw64(RX_DMA_CTL_STAT(channel), val);
4988
4989         return 0;
4990 }
4991
4992 static int niu_init_rx_channels(struct niu *np)
4993 {
4994         unsigned long flags;
4995         u64 seed = jiffies_64;
4996         int err, i;
4997
4998         niu_lock_parent(np, flags);
4999         nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
5000         nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
5001         niu_unlock_parent(np, flags);
5002
5003         /* XXX RXDMA 32bit mode? XXX */
5004
5005         niu_init_rdc_groups(np);
5006         niu_init_drr_weight(np);
5007
5008         err = niu_init_hostinfo(np);
5009         if (err)
5010                 return err;
5011
5012         for (i = 0; i < np->num_rx_rings; i++) {
5013                 struct rx_ring_info *rp = &np->rx_rings[i];
5014
5015                 err = niu_init_one_rx_channel(np, rp);
5016                 if (err)
5017                         return err;
5018         }
5019
5020         return 0;
5021 }
5022
5023 static int niu_set_ip_frag_rule(struct niu *np)
5024 {
5025         struct niu_parent *parent = np->parent;
5026         struct niu_classifier *cp = &np->clas;
5027         struct niu_tcam_entry *tp;
5028         int index, err;
5029
5030         index = cp->tcam_top;
5031         tp = &parent->tcam[index];
5032
5033         /* Note that the noport bit is the same in both ipv4 and
5034          * ipv6 format TCAM entries.
5035          */
5036         memset(tp, 0, sizeof(*tp));
5037         tp->key[1] = TCAM_V4KEY1_NOPORT;
5038         tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5039         tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5040                           ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5041         err = tcam_write(np, index, tp->key, tp->key_mask);
5042         if (err)
5043                 return err;
5044         err = tcam_assoc_write(np, index, tp->assoc_data);
5045         if (err)
5046                 return err;
5047         tp->valid = 1;
5048         cp->tcam_valid_entries++;
5049
5050         return 0;
5051 }
5052
5053 static int niu_init_classifier_hw(struct niu *np)
5054 {
5055         struct niu_parent *parent = np->parent;
5056         struct niu_classifier *cp = &np->clas;
5057         int i, err;
5058
5059         nw64(H1POLY, cp->h1_init);
5060         nw64(H2POLY, cp->h2_init);
5061
5062         err = niu_init_hostinfo(np);
5063         if (err)
5064                 return err;
5065
5066         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5067                 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5068
5069                 vlan_tbl_write(np, i, np->port,
5070                                vp->vlan_pref, vp->rdc_num);
5071         }
5072
5073         for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5074                 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5075
5076                 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5077                                                 ap->rdc_num, ap->mac_pref);
5078                 if (err)
5079                         return err;
5080         }
5081
5082         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5083                 int index = i - CLASS_CODE_USER_PROG1;
5084
5085                 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5086                 if (err)
5087                         return err;
5088                 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5089                 if (err)
5090                         return err;
5091         }
5092
5093         err = niu_set_ip_frag_rule(np);
5094         if (err)
5095                 return err;
5096
5097         tcam_enable(np, 1);
5098
5099         return 0;
5100 }
5101
5102 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5103 {
5104         nw64(ZCP_RAM_DATA0, data[0]);
5105         nw64(ZCP_RAM_DATA1, data[1]);
5106         nw64(ZCP_RAM_DATA2, data[2]);
5107         nw64(ZCP_RAM_DATA3, data[3]);
5108         nw64(ZCP_RAM_DATA4, data[4]);
5109         nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5110         nw64(ZCP_RAM_ACC,
5111              (ZCP_RAM_ACC_WRITE |
5112               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5113               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5114
5115         return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5116                                    1000, 100);
5117 }
5118
5119 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5120 {
5121         int err;
5122
5123         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5124                                   1000, 100);
5125         if (err) {
5126                 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5127                            (unsigned long long)nr64(ZCP_RAM_ACC));
5128                 return err;
5129         }
5130
5131         nw64(ZCP_RAM_ACC,
5132              (ZCP_RAM_ACC_READ |
5133               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5134               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5135
5136         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5137                                   1000, 100);
5138         if (err) {
5139                 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5140                            (unsigned long long)nr64(ZCP_RAM_ACC));
5141                 return err;
5142         }
5143
5144         data[0] = nr64(ZCP_RAM_DATA0);
5145         data[1] = nr64(ZCP_RAM_DATA1);
5146         data[2] = nr64(ZCP_RAM_DATA2);
5147         data[3] = nr64(ZCP_RAM_DATA3);
5148         data[4] = nr64(ZCP_RAM_DATA4);
5149
5150         return 0;
5151 }
5152
5153 static void niu_zcp_cfifo_reset(struct niu *np)
5154 {
5155         u64 val = nr64(RESET_CFIFO);
5156
5157         val |= RESET_CFIFO_RST(np->port);
5158         nw64(RESET_CFIFO, val);
5159         udelay(10);
5160
5161         val &= ~RESET_CFIFO_RST(np->port);
5162         nw64(RESET_CFIFO, val);
5163 }
5164
5165 static int niu_init_zcp(struct niu *np)
5166 {
5167         u64 data[5], rbuf[5];
5168         int i, max, err;
5169
5170         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5171                 if (np->port == 0 || np->port == 1)
5172                         max = ATLAS_P0_P1_CFIFO_ENTRIES;
5173                 else
5174                         max = ATLAS_P2_P3_CFIFO_ENTRIES;
5175         } else
5176                 max = NIU_CFIFO_ENTRIES;
5177
5178         data[0] = 0;
5179         data[1] = 0;
5180         data[2] = 0;
5181         data[3] = 0;
5182         data[4] = 0;
5183
5184         for (i = 0; i < max; i++) {
5185                 err = niu_zcp_write(np, i, data);
5186                 if (err)
5187                         return err;
5188                 err = niu_zcp_read(np, i, rbuf);
5189                 if (err)
5190                         return err;
5191         }
5192
5193         niu_zcp_cfifo_reset(np);
5194         nw64(CFIFO_ECC(np->port), 0);
5195         nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5196         (void) nr64(ZCP_INT_STAT);
5197         nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5198
5199         return 0;
5200 }
5201
5202 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5203 {
5204         u64 val = nr64_ipp(IPP_CFIG);
5205
5206         nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5207         nw64_ipp(IPP_DFIFO_WR_PTR, index);
5208         nw64_ipp(IPP_DFIFO_WR0, data[0]);
5209         nw64_ipp(IPP_DFIFO_WR1, data[1]);
5210         nw64_ipp(IPP_DFIFO_WR2, data[2]);
5211         nw64_ipp(IPP_DFIFO_WR3, data[3]);
5212         nw64_ipp(IPP_DFIFO_WR4, data[4]);
5213         nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5214 }
5215
5216 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5217 {
5218         nw64_ipp(IPP_DFIFO_RD_PTR, index);
5219         data[0] = nr64_ipp(IPP_DFIFO_RD0);
5220         data[1] = nr64_ipp(IPP_DFIFO_RD1);
5221         data[2] = nr64_ipp(IPP_DFIFO_RD2);
5222         data[3] = nr64_ipp(IPP_DFIFO_RD3);
5223         data[4] = nr64_ipp(IPP_DFIFO_RD4);
5224 }
5225
5226 static int niu_ipp_reset(struct niu *np)
5227 {
5228         return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5229                                           1000, 100, "IPP_CFIG");
5230 }
5231
5232 static int niu_init_ipp(struct niu *np)
5233 {
5234         u64 data[5], rbuf[5], val;
5235         int i, max, err;
5236
5237         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5238                 if (np->port == 0 || np->port == 1)
5239                         max = ATLAS_P0_P1_DFIFO_ENTRIES;
5240                 else
5241                         max = ATLAS_P2_P3_DFIFO_ENTRIES;
5242         } else
5243                 max = NIU_DFIFO_ENTRIES;
5244
5245         data[0] = 0;
5246         data[1] = 0;
5247         data[2] = 0;
5248         data[3] = 0;
5249         data[4] = 0;
5250
5251         for (i = 0; i < max; i++) {
5252                 niu_ipp_write(np, i, data);
5253                 niu_ipp_read(np, i, rbuf);
5254         }
5255
5256         (void) nr64_ipp(IPP_INT_STAT);
5257         (void) nr64_ipp(IPP_INT_STAT);
5258
5259         err = niu_ipp_reset(np);
5260         if (err)
5261                 return err;
5262
5263         (void) nr64_ipp(IPP_PKT_DIS);
5264         (void) nr64_ipp(IPP_BAD_CS_CNT);
5265         (void) nr64_ipp(IPP_ECC);
5266
5267         (void) nr64_ipp(IPP_INT_STAT);
5268
5269         nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5270
5271         val = nr64_ipp(IPP_CFIG);
5272         val &= ~IPP_CFIG_IP_MAX_PKT;
5273         val |= (IPP_CFIG_IPP_ENABLE |
5274                 IPP_CFIG_DFIFO_ECC_EN |
5275                 IPP_CFIG_DROP_BAD_CRC |
5276                 IPP_CFIG_CKSUM_EN |
5277                 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5278         nw64_ipp(IPP_CFIG, val);
5279
5280         return 0;
5281 }
5282
5283 static void niu_handle_led(struct niu *np, int status)
5284 {
5285         u64 val;
5286         val = nr64_mac(XMAC_CONFIG);
5287
5288         if ((np->flags & NIU_FLAGS_10G) != 0 &&
5289             (np->flags & NIU_FLAGS_FIBER) != 0) {
5290                 if (status) {
5291                         val |= XMAC_CONFIG_LED_POLARITY;
5292                         val &= ~XMAC_CONFIG_FORCE_LED_ON;
5293                 } else {
5294                         val |= XMAC_CONFIG_FORCE_LED_ON;
5295                         val &= ~XMAC_CONFIG_LED_POLARITY;
5296                 }
5297         }
5298
5299         nw64_mac(XMAC_CONFIG, val);
5300 }
5301
5302 static void niu_init_xif_xmac(struct niu *np)
5303 {
5304         struct niu_link_config *lp = &np->link_config;
5305         u64 val;
5306
5307         if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5308                 val = nr64(MIF_CONFIG);
5309                 val |= MIF_CONFIG_ATCA_GE;
5310                 nw64(MIF_CONFIG, val);
5311         }
5312
5313         val = nr64_mac(XMAC_CONFIG);
5314         val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5315
5316         val |= XMAC_CONFIG_TX_OUTPUT_EN;
5317
5318         if (lp->loopback_mode == LOOPBACK_MAC) {
5319                 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5320                 val |= XMAC_CONFIG_LOOPBACK;
5321         } else {
5322                 val &= ~XMAC_CONFIG_LOOPBACK;
5323         }
5324
5325         if (np->flags & NIU_FLAGS_10G) {
5326                 val &= ~XMAC_CONFIG_LFS_DISABLE;
5327         } else {
5328                 val |= XMAC_CONFIG_LFS_DISABLE;
5329                 if (!(np->flags & NIU_FLAGS_FIBER) &&
5330                     !(np->flags & NIU_FLAGS_XCVR_SERDES))
5331                         val |= XMAC_CONFIG_1G_PCS_BYPASS;
5332                 else
5333                         val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5334         }
5335
5336         val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5337
5338         if (lp->active_speed == SPEED_100)
5339                 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5340         else
5341                 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5342
5343         nw64_mac(XMAC_CONFIG, val);
5344
5345         val = nr64_mac(XMAC_CONFIG);
5346         val &= ~XMAC_CONFIG_MODE_MASK;
5347         if (np->flags & NIU_FLAGS_10G) {
5348                 val |= XMAC_CONFIG_MODE_XGMII;
5349         } else {
5350                 if (lp->active_speed == SPEED_1000)
5351                         val |= XMAC_CONFIG_MODE_GMII;
5352                 else
5353                         val |= XMAC_CONFIG_MODE_MII;
5354         }
5355
5356         nw64_mac(XMAC_CONFIG, val);
5357 }
5358
5359 static void niu_init_xif_bmac(struct niu *np)
5360 {
5361         struct niu_link_config *lp = &np->link_config;
5362         u64 val;
5363
5364         val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5365
5366         if (lp->loopback_mode == LOOPBACK_MAC)
5367                 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5368         else
5369                 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5370
5371         if (lp->active_speed == SPEED_1000)
5372                 val |= BMAC_XIF_CONFIG_GMII_MODE;
5373         else
5374                 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5375
5376         val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5377                  BMAC_XIF_CONFIG_LED_POLARITY);
5378
5379         if (!(np->flags & NIU_FLAGS_10G) &&
5380             !(np->flags & NIU_FLAGS_FIBER) &&
5381             lp->active_speed == SPEED_100)
5382                 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5383         else
5384                 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5385
5386         nw64_mac(BMAC_XIF_CONFIG, val);
5387 }
5388
5389 static void niu_init_xif(struct niu *np)
5390 {
5391         if (np->flags & NIU_FLAGS_XMAC)
5392                 niu_init_xif_xmac(np);
5393         else
5394                 niu_init_xif_bmac(np);
5395 }
5396
5397 static void niu_pcs_mii_reset(struct niu *np)
5398 {
5399         int limit = 1000;
5400         u64 val = nr64_pcs(PCS_MII_CTL);
5401         val |= PCS_MII_CTL_RST;
5402         nw64_pcs(PCS_MII_CTL, val);
5403         while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5404                 udelay(100);
5405                 val = nr64_pcs(PCS_MII_CTL);
5406         }
5407 }
5408
5409 static void niu_xpcs_reset(struct niu *np)
5410 {
5411         int limit = 1000;
5412         u64 val = nr64_xpcs(XPCS_CONTROL1);
5413         val |= XPCS_CONTROL1_RESET;
5414         nw64_xpcs(XPCS_CONTROL1, val);
5415         while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5416                 udelay(100);
5417                 val = nr64_xpcs(XPCS_CONTROL1);
5418         }
5419 }
5420
5421 static int niu_init_pcs(struct niu *np)
5422 {
5423         struct niu_link_config *lp = &np->link_config;
5424         u64 val;
5425
5426         switch (np->flags & (NIU_FLAGS_10G |
5427                              NIU_FLAGS_FIBER |
5428                              NIU_FLAGS_XCVR_SERDES)) {
5429         case NIU_FLAGS_FIBER:
5430                 /* 1G fiber */
5431                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5432                 nw64_pcs(PCS_DPATH_MODE, 0);
5433                 niu_pcs_mii_reset(np);
5434                 break;
5435
5436         case NIU_FLAGS_10G:
5437         case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5438         case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5439                 /* 10G SERDES */
5440                 if (!(np->flags & NIU_FLAGS_XMAC))
5441                         return -EINVAL;
5442
5443                 /* 10G copper or fiber */
5444                 val = nr64_mac(XMAC_CONFIG);
5445                 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5446                 nw64_mac(XMAC_CONFIG, val);
5447
5448                 niu_xpcs_reset(np);
5449
5450                 val = nr64_xpcs(XPCS_CONTROL1);
5451                 if (lp->loopback_mode == LOOPBACK_PHY)
5452                         val |= XPCS_CONTROL1_LOOPBACK;
5453                 else
5454                         val &= ~XPCS_CONTROL1_LOOPBACK;
5455                 nw64_xpcs(XPCS_CONTROL1, val);
5456
5457                 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5458                 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5459                 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5460                 break;
5461
5462
5463         case NIU_FLAGS_XCVR_SERDES:
5464                 /* 1G SERDES */
5465                 niu_pcs_mii_reset(np);
5466                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5467                 nw64_pcs(PCS_DPATH_MODE, 0);
5468                 break;
5469
5470         case 0:
5471                 /* 1G copper */
5472         case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5473                 /* 1G RGMII FIBER */
5474                 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5475                 niu_pcs_mii_reset(np);
5476                 break;
5477
5478         default:
5479                 return -EINVAL;
5480         }
5481
5482         return 0;
5483 }
5484
5485 static int niu_reset_tx_xmac(struct niu *np)
5486 {
5487         return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5488                                           (XTXMAC_SW_RST_REG_RS |
5489                                            XTXMAC_SW_RST_SOFT_RST),
5490                                           1000, 100, "XTXMAC_SW_RST");
5491 }
5492
5493 static int niu_reset_tx_bmac(struct niu *np)
5494 {
5495         int limit;
5496
5497         nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5498         limit = 1000;
5499         while (--limit >= 0) {
5500                 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5501                         break;
5502                 udelay(100);
5503         }
5504         if (limit < 0) {
5505                 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5506                         np->port,
5507                         (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5508                 return -ENODEV;
5509         }
5510
5511         return 0;
5512 }
5513
5514 static int niu_reset_tx_mac(struct niu *np)
5515 {
5516         if (np->flags & NIU_FLAGS_XMAC)
5517                 return niu_reset_tx_xmac(np);
5518         else
5519                 return niu_reset_tx_bmac(np);
5520 }
5521
5522 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5523 {
5524         u64 val;
5525
5526         val = nr64_mac(XMAC_MIN);
5527         val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5528                  XMAC_MIN_RX_MIN_PKT_SIZE);
5529         val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5530         val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5531         nw64_mac(XMAC_MIN, val);
5532
5533         nw64_mac(XMAC_MAX, max);
5534
5535         nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5536
5537         val = nr64_mac(XMAC_IPG);
5538         if (np->flags & NIU_FLAGS_10G) {
5539                 val &= ~XMAC_IPG_IPG_XGMII;
5540                 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5541         } else {
5542                 val &= ~XMAC_IPG_IPG_MII_GMII;
5543                 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5544         }
5545         nw64_mac(XMAC_IPG, val);
5546
5547         val = nr64_mac(XMAC_CONFIG);
5548         val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5549                  XMAC_CONFIG_STRETCH_MODE |
5550                  XMAC_CONFIG_VAR_MIN_IPG_EN |
5551                  XMAC_CONFIG_TX_ENABLE);
5552         nw64_mac(XMAC_CONFIG, val);
5553
5554         nw64_mac(TXMAC_FRM_CNT, 0);
5555         nw64_mac(TXMAC_BYTE_CNT, 0);
5556 }
5557
5558 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5559 {
5560         u64 val;
5561
5562         nw64_mac(BMAC_MIN_FRAME, min);
5563         nw64_mac(BMAC_MAX_FRAME, max);
5564
5565         nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5566         nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5567         nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5568
5569         val = nr64_mac(BTXMAC_CONFIG);
5570         val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5571                  BTXMAC_CONFIG_ENABLE);
5572         nw64_mac(BTXMAC_CONFIG, val);
5573 }
5574
5575 static void niu_init_tx_mac(struct niu *np)
5576 {
5577         u64 min, max;
5578
5579         min = 64;
5580         if (np->dev->mtu > ETH_DATA_LEN)
5581                 max = 9216;
5582         else
5583                 max = 1522;
5584
5585         /* The XMAC_MIN register only accepts values for TX min which
5586          * have the low 3 bits cleared.
5587          */
5588         BUG_ON(min & 0x7);
5589
5590         if (np->flags & NIU_FLAGS_XMAC)
5591                 niu_init_tx_xmac(np, min, max);
5592         else
5593                 niu_init_tx_bmac(np, min, max);
5594 }
5595
5596 static int niu_reset_rx_xmac(struct niu *np)
5597 {
5598         int limit;
5599
5600         nw64_mac(XRXMAC_SW_RST,
5601                  XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5602         limit = 1000;
5603         while (--limit >= 0) {
5604                 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5605                                                  XRXMAC_SW_RST_SOFT_RST)))
5606                         break;
5607                 udelay(100);
5608         }
5609         if (limit < 0) {
5610                 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5611                         np->port,
5612                         (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5613                 return -ENODEV;
5614         }
5615
5616         return 0;
5617 }
5618
5619 static int niu_reset_rx_bmac(struct niu *np)
5620 {
5621         int limit;
5622
5623         nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5624         limit = 1000;
5625         while (--limit >= 0) {
5626                 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5627                         break;
5628                 udelay(100);
5629         }
5630         if (limit < 0) {
5631                 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5632                         np->port,
5633                         (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5634                 return -ENODEV;
5635         }
5636
5637         return 0;
5638 }
5639
5640 static int niu_reset_rx_mac(struct niu *np)
5641 {
5642         if (np->flags & NIU_FLAGS_XMAC)
5643                 return niu_reset_rx_xmac(np);
5644         else
5645                 return niu_reset_rx_bmac(np);
5646 }
5647
5648 static void niu_init_rx_xmac(struct niu *np)
5649 {
5650         struct niu_parent *parent = np->parent;
5651         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5652         int first_rdc_table = tp->first_table_num;
5653         unsigned long i;
5654         u64 val;
5655
5656         nw64_mac(XMAC_ADD_FILT0, 0);
5657         nw64_mac(XMAC_ADD_FILT1, 0);
5658         nw64_mac(XMAC_ADD_FILT2, 0);
5659         nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5660         nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5661         for (i = 0; i < MAC_NUM_HASH; i++)
5662                 nw64_mac(XMAC_HASH_TBL(i), 0);
5663         nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5664         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5665         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5666
5667         val = nr64_mac(XMAC_CONFIG);
5668         val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5669                  XMAC_CONFIG_PROMISCUOUS |
5670                  XMAC_CONFIG_PROMISC_GROUP |
5671                  XMAC_CONFIG_ERR_CHK_DIS |
5672                  XMAC_CONFIG_RX_CRC_CHK_DIS |
5673                  XMAC_CONFIG_RESERVED_MULTICAST |
5674                  XMAC_CONFIG_RX_CODEV_CHK_DIS |
5675                  XMAC_CONFIG_ADDR_FILTER_EN |
5676                  XMAC_CONFIG_RCV_PAUSE_ENABLE |
5677                  XMAC_CONFIG_STRIP_CRC |
5678                  XMAC_CONFIG_PASS_FLOW_CTRL |
5679                  XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5680         val |= (XMAC_CONFIG_HASH_FILTER_EN);
5681         nw64_mac(XMAC_CONFIG, val);
5682
5683         nw64_mac(RXMAC_BT_CNT, 0);
5684         nw64_mac(RXMAC_BC_FRM_CNT, 0);
5685         nw64_mac(RXMAC_MC_FRM_CNT, 0);
5686         nw64_mac(RXMAC_FRAG_CNT, 0);
5687         nw64_mac(RXMAC_HIST_CNT1, 0);
5688         nw64_mac(RXMAC_HIST_CNT2, 0);
5689         nw64_mac(RXMAC_HIST_CNT3, 0);
5690         nw64_mac(RXMAC_HIST_CNT4, 0);
5691         nw64_mac(RXMAC_HIST_CNT5, 0);
5692         nw64_mac(RXMAC_HIST_CNT6, 0);
5693         nw64_mac(RXMAC_HIST_CNT7, 0);
5694         nw64_mac(RXMAC_MPSZER_CNT, 0);
5695         nw64_mac(RXMAC_CRC_ER_CNT, 0);
5696         nw64_mac(RXMAC_CD_VIO_CNT, 0);
5697         nw64_mac(LINK_FAULT_CNT, 0);
5698 }
5699
5700 static void niu_init_rx_bmac(struct niu *np)
5701 {
5702         struct niu_parent *parent = np->parent;
5703         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5704         int first_rdc_table = tp->first_table_num;
5705         unsigned long i;
5706         u64 val;
5707
5708         nw64_mac(BMAC_ADD_FILT0, 0);
5709         nw64_mac(BMAC_ADD_FILT1, 0);
5710         nw64_mac(BMAC_ADD_FILT2, 0);
5711         nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5712         nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5713         for (i = 0; i < MAC_NUM_HASH; i++)
5714                 nw64_mac(BMAC_HASH_TBL(i), 0);
5715         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5716         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5717         nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5718
5719         val = nr64_mac(BRXMAC_CONFIG);
5720         val &= ~(BRXMAC_CONFIG_ENABLE |
5721                  BRXMAC_CONFIG_STRIP_PAD |
5722                  BRXMAC_CONFIG_STRIP_FCS |
5723                  BRXMAC_CONFIG_PROMISC |
5724                  BRXMAC_CONFIG_PROMISC_GRP |
5725                  BRXMAC_CONFIG_ADDR_FILT_EN |
5726                  BRXMAC_CONFIG_DISCARD_DIS);
5727         val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5728         nw64_mac(BRXMAC_CONFIG, val);
5729
5730         val = nr64_mac(BMAC_ADDR_CMPEN);
5731         val |= BMAC_ADDR_CMPEN_EN0;
5732         nw64_mac(BMAC_ADDR_CMPEN, val);
5733 }
5734
5735 static void niu_init_rx_mac(struct niu *np)
5736 {
5737         niu_set_primary_mac(np, np->dev->dev_addr);
5738
5739         if (np->flags & NIU_FLAGS_XMAC)
5740                 niu_init_rx_xmac(np);
5741         else
5742                 niu_init_rx_bmac(np);
5743 }
5744
5745 static void niu_enable_tx_xmac(struct niu *np, int on)
5746 {
5747         u64 val = nr64_mac(XMAC_CONFIG);
5748
5749         if (on)
5750                 val |= XMAC_CONFIG_TX_ENABLE;
5751         else
5752                 val &= ~XMAC_CONFIG_TX_ENABLE;
5753         nw64_mac(XMAC_CONFIG, val);
5754 }
5755
5756 static void niu_enable_tx_bmac(struct niu *np, int on)
5757 {
5758         u64 val = nr64_mac(BTXMAC_CONFIG);
5759
5760         if (on)
5761                 val |= BTXMAC_CONFIG_ENABLE;
5762         else
5763                 val &= ~BTXMAC_CONFIG_ENABLE;
5764         nw64_mac(BTXMAC_CONFIG, val);
5765 }
5766
5767 static void niu_enable_tx_mac(struct niu *np, int on)
5768 {
5769         if (np->flags & NIU_FLAGS_XMAC)
5770                 niu_enable_tx_xmac(np, on);
5771         else
5772                 niu_enable_tx_bmac(np, on);
5773 }
5774
5775 static void niu_enable_rx_xmac(struct niu *np, int on)
5776 {
5777         u64 val = nr64_mac(XMAC_CONFIG);
5778
5779         val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5780                  XMAC_CONFIG_PROMISCUOUS);
5781
5782         if (np->flags & NIU_FLAGS_MCAST)
5783                 val |= XMAC_CONFIG_HASH_FILTER_EN;
5784         if (np->flags & NIU_FLAGS_PROMISC)
5785                 val |= XMAC_CONFIG_PROMISCUOUS;
5786
5787         if (on)
5788                 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5789         else
5790                 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5791         nw64_mac(XMAC_CONFIG, val);
5792 }
5793
5794 static void niu_enable_rx_bmac(struct niu *np, int on)
5795 {
5796         u64 val = nr64_mac(BRXMAC_CONFIG);
5797
5798         val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5799                  BRXMAC_CONFIG_PROMISC);
5800
5801         if (np->flags & NIU_FLAGS_MCAST)
5802                 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5803         if (np->flags & NIU_FLAGS_PROMISC)
5804                 val |= BRXMAC_CONFIG_PROMISC;
5805
5806         if (on)
5807                 val |= BRXMAC_CONFIG_ENABLE;
5808         else
5809                 val &= ~BRXMAC_CONFIG_ENABLE;
5810         nw64_mac(BRXMAC_CONFIG, val);
5811 }
5812
5813 static void niu_enable_rx_mac(struct niu *np, int on)
5814 {
5815         if (np->flags & NIU_FLAGS_XMAC)
5816                 niu_enable_rx_xmac(np, on);
5817         else
5818                 niu_enable_rx_bmac(np, on);
5819 }
5820
5821 static int niu_init_mac(struct niu *np)
5822 {
5823         int err;
5824
5825         niu_init_xif(np);
5826         err = niu_init_pcs(np);
5827         if (err)
5828                 return err;
5829
5830         err = niu_reset_tx_mac(np);
5831         if (err)
5832                 return err;
5833         niu_init_tx_mac(np);
5834         err = niu_reset_rx_mac(np);
5835         if (err)
5836                 return err;
5837         niu_init_rx_mac(np);
5838
5839         /* This looks hookey but the RX MAC reset we just did will
5840          * undo some of the state we setup in niu_init_tx_mac() so we
5841          * have to call it again.  In particular, the RX MAC reset will
5842          * set the XMAC_MAX register back to it's default value.
5843          */
5844         niu_init_tx_mac(np);
5845         niu_enable_tx_mac(np, 1);
5846
5847         niu_enable_rx_mac(np, 1);
5848
5849         return 0;
5850 }
5851
5852 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5853 {
5854         (void) niu_tx_channel_stop(np, rp->tx_channel);
5855 }
5856
5857 static void niu_stop_tx_channels(struct niu *np)
5858 {
5859         int i;
5860
5861         for (i = 0; i < np->num_tx_rings; i++) {
5862                 struct tx_ring_info *rp = &np->tx_rings[i];
5863
5864                 niu_stop_one_tx_channel(np, rp);
5865         }
5866 }
5867
5868 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5869 {
5870         (void) niu_tx_channel_reset(np, rp->tx_channel);
5871 }
5872
5873 static void niu_reset_tx_channels(struct niu *np)
5874 {
5875         int i;
5876
5877         for (i = 0; i < np->num_tx_rings; i++) {
5878                 struct tx_ring_info *rp = &np->tx_rings[i];
5879
5880                 niu_reset_one_tx_channel(np, rp);
5881         }
5882 }
5883
5884 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5885 {
5886         (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5887 }
5888
5889 static void niu_stop_rx_channels(struct niu *np)
5890 {
5891         int i;
5892
5893         for (i = 0; i < np->num_rx_rings; i++) {
5894                 struct rx_ring_info *rp = &np->rx_rings[i];
5895
5896                 niu_stop_one_rx_channel(np, rp);
5897         }
5898 }
5899
5900 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5901 {
5902         int channel = rp->rx_channel;
5903
5904         (void) niu_rx_channel_reset(np, channel);
5905         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5906         nw64(RX_DMA_CTL_STAT(channel), 0);
5907         (void) niu_enable_rx_channel(np, channel, 0);
5908 }
5909
5910 static void niu_reset_rx_channels(struct niu *np)
5911 {
5912         int i;
5913
5914         for (i = 0; i < np->num_rx_rings; i++) {
5915                 struct rx_ring_info *rp = &np->rx_rings[i];
5916
5917                 niu_reset_one_rx_channel(np, rp);
5918         }
5919 }
5920
5921 static void niu_disable_ipp(struct niu *np)
5922 {
5923         u64 rd, wr, val;
5924         int limit;
5925
5926         rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5927         wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5928         limit = 100;
5929         while (--limit >= 0 && (rd != wr)) {
5930                 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5931                 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5932         }
5933         if (limit < 0 &&
5934             (rd != 0 && wr != 1)) {
5935                 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5936                            (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5937                            (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5938         }
5939
5940         val = nr64_ipp(IPP_CFIG);
5941         val &= ~(IPP_CFIG_IPP_ENABLE |
5942                  IPP_CFIG_DFIFO_ECC_EN |
5943                  IPP_CFIG_DROP_BAD_CRC |
5944                  IPP_CFIG_CKSUM_EN);
5945         nw64_ipp(IPP_CFIG, val);
5946
5947         (void) niu_ipp_reset(np);
5948 }
5949
5950 static int niu_init_hw(struct niu *np)
5951 {
5952         int i, err;
5953
5954         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5955         niu_txc_enable_port(np, 1);
5956         niu_txc_port_dma_enable(np, 1);
5957         niu_txc_set_imask(np, 0);
5958
5959         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5960         for (i = 0; i < np->num_tx_rings; i++) {
5961                 struct tx_ring_info *rp = &np->tx_rings[i];
5962
5963                 err = niu_init_one_tx_channel(np, rp);
5964                 if (err)
5965                         return err;
5966         }
5967
5968         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5969         err = niu_init_rx_channels(np);
5970         if (err)
5971                 goto out_uninit_tx_channels;
5972
5973         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5974         err = niu_init_classifier_hw(np);
5975         if (err)
5976                 goto out_uninit_rx_channels;
5977
5978         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5979         err = niu_init_zcp(np);
5980         if (err)
5981                 goto out_uninit_rx_channels;
5982
5983         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5984         err = niu_init_ipp(np);
5985         if (err)
5986                 goto out_uninit_rx_channels;
5987
5988         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5989         err = niu_init_mac(np);
5990         if (err)
5991                 goto out_uninit_ipp;
5992
5993         return 0;
5994
5995 out_uninit_ipp:
5996         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5997         niu_disable_ipp(np);
5998
5999 out_uninit_rx_channels:
6000         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
6001         niu_stop_rx_channels(np);
6002         niu_reset_rx_channels(np);
6003
6004 out_uninit_tx_channels:
6005         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
6006         niu_stop_tx_channels(np);
6007         niu_reset_tx_channels(np);
6008
6009         return err;
6010 }
6011
6012 static void niu_stop_hw(struct niu *np)
6013 {
6014         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6015         niu_enable_interrupts(np, 0);
6016
6017         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6018         niu_enable_rx_mac(np, 0);
6019
6020         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6021         niu_disable_ipp(np);
6022
6023         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6024         niu_stop_tx_channels(np);
6025
6026         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6027         niu_stop_rx_channels(np);
6028
6029         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6030         niu_reset_tx_channels(np);
6031
6032         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6033         niu_reset_rx_channels(np);
6034 }
6035
6036 static void niu_set_irq_name(struct niu *np)
6037 {
6038         int port = np->port;
6039         int i, j = 1;
6040
6041         sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6042
6043         if (port == 0) {
6044                 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6045                 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6046                 j = 3;
6047         }
6048
6049         for (i = 0; i < np->num_ldg - j; i++) {
6050                 if (i < np->num_rx_rings)
6051                         sprintf(np->irq_name[i+j], "%s-rx-%d",
6052                                 np->dev->name, i);
6053                 else if (i < np->num_tx_rings + np->num_rx_rings)
6054                         sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6055                                 i - np->num_rx_rings);
6056         }
6057 }
6058
6059 static int niu_request_irq(struct niu *np)
6060 {
6061         int i, j, err;
6062
6063         niu_set_irq_name(np);
6064
6065         err = 0;
6066         for (i = 0; i < np->num_ldg; i++) {
6067                 struct niu_ldg *lp = &np->ldg[i];
6068
6069                 err = request_irq(lp->irq, niu_interrupt, IRQF_SHARED,
6070                                   np->irq_name[i], lp);
6071                 if (err)
6072                         goto out_free_irqs;
6073
6074         }
6075
6076         return 0;
6077
6078 out_free_irqs:
6079         for (j = 0; j < i; j++) {
6080                 struct niu_ldg *lp = &np->ldg[j];
6081
6082                 free_irq(lp->irq, lp);
6083         }
6084         return err;
6085 }
6086
6087 static void niu_free_irq(struct niu *np)
6088 {
6089         int i;
6090
6091         for (i = 0; i < np->num_ldg; i++) {
6092                 struct niu_ldg *lp = &np->ldg[i];
6093
6094                 free_irq(lp->irq, lp);
6095         }
6096 }
6097
6098 static void niu_enable_napi(struct niu *np)
6099 {
6100         int i;
6101
6102         for (i = 0; i < np->num_ldg; i++)
6103                 napi_enable(&np->ldg[i].napi);
6104 }
6105
6106 static void niu_disable_napi(struct niu *np)
6107 {
6108         int i;
6109
6110         for (i = 0; i < np->num_ldg; i++)
6111                 napi_disable(&np->ldg[i].napi);
6112 }
6113
6114 static int niu_open(struct net_device *dev)
6115 {
6116         struct niu *np = netdev_priv(dev);
6117         int err;
6118
6119         netif_carrier_off(dev);
6120
6121         err = niu_alloc_channels(np);
6122         if (err)
6123                 goto out_err;
6124
6125         err = niu_enable_interrupts(np, 0);
6126         if (err)
6127                 goto out_free_channels;
6128
6129         err = niu_request_irq(np);
6130         if (err)
6131                 goto out_free_channels;
6132
6133         niu_enable_napi(np);
6134
6135         spin_lock_irq(&np->lock);
6136
6137         err = niu_init_hw(np);
6138         if (!err) {
6139                 init_timer(&np->timer);
6140                 np->timer.expires = jiffies + HZ;
6141                 np->timer.data = (unsigned long) np;
6142                 np->timer.function = niu_timer;
6143
6144                 err = niu_enable_interrupts(np, 1);
6145                 if (err)
6146                         niu_stop_hw(np);
6147         }
6148
6149         spin_unlock_irq(&np->lock);
6150
6151         if (err) {
6152                 niu_disable_napi(np);
6153                 goto out_free_irq;
6154         }
6155
6156         netif_tx_start_all_queues(dev);
6157
6158         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6159                 netif_carrier_on(dev);
6160
6161         add_timer(&np->timer);
6162
6163         return 0;
6164
6165 out_free_irq:
6166         niu_free_irq(np);
6167
6168 out_free_channels:
6169         niu_free_channels(np);
6170
6171 out_err:
6172         return err;
6173 }
6174
6175 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6176 {
6177         cancel_work_sync(&np->reset_task);
6178
6179         niu_disable_napi(np);
6180         netif_tx_stop_all_queues(dev);
6181
6182         del_timer_sync(&np->timer);
6183
6184         spin_lock_irq(&np->lock);
6185
6186         niu_stop_hw(np);
6187
6188         spin_unlock_irq(&np->lock);
6189 }
6190
6191 static int niu_close(struct net_device *dev)
6192 {
6193         struct niu *np = netdev_priv(dev);
6194
6195         niu_full_shutdown(np, dev);
6196
6197         niu_free_irq(np);
6198
6199         niu_free_channels(np);
6200
6201         niu_handle_led(np, 0);
6202
6203         return 0;
6204 }
6205
6206 static void niu_sync_xmac_stats(struct niu *np)
6207 {
6208         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6209
6210         mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6211         mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6212
6213         mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6214         mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6215         mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6216         mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6217         mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6218         mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6219         mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6220         mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6221         mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6222         mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6223         mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6224         mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6225         mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6226         mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6227         mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6228         mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6229 }
6230
6231 static void niu_sync_bmac_stats(struct niu *np)
6232 {
6233         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6234
6235         mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6236         mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6237
6238         mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6239         mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6240         mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6241         mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6242 }
6243
6244 static void niu_sync_mac_stats(struct niu *np)
6245 {
6246         if (np->flags & NIU_FLAGS_XMAC)
6247                 niu_sync_xmac_stats(np);
6248         else
6249                 niu_sync_bmac_stats(np);
6250 }
6251
6252 static void niu_get_rx_stats(struct niu *np)
6253 {
6254         unsigned long pkts, dropped, errors, bytes;
6255         struct rx_ring_info *rx_rings;
6256         int i;
6257
6258         pkts = dropped = errors = bytes = 0;
6259
6260         rx_rings = ACCESS_ONCE(np->rx_rings);
6261         if (!rx_rings)
6262                 goto no_rings;
6263
6264         for (i = 0; i < np->num_rx_rings; i++) {
6265                 struct rx_ring_info *rp = &rx_rings[i];
6266
6267                 niu_sync_rx_discard_stats(np, rp, 0);
6268
6269                 pkts += rp->rx_packets;
6270                 bytes += rp->rx_bytes;
6271                 dropped += rp->rx_dropped;
6272                 errors += rp->rx_errors;
6273         }
6274
6275 no_rings:
6276         np->dev->stats.rx_packets = pkts;
6277         np->dev->stats.rx_bytes = bytes;
6278         np->dev->stats.rx_dropped = dropped;
6279         np->dev->stats.rx_errors = errors;
6280 }
6281
6282 static void niu_get_tx_stats(struct niu *np)
6283 {
6284         unsigned long pkts, errors, bytes;
6285         struct tx_ring_info *tx_rings;
6286         int i;
6287
6288         pkts = errors = bytes = 0;
6289
6290         tx_rings = ACCESS_ONCE(np->tx_rings);
6291         if (!tx_rings)
6292                 goto no_rings;
6293
6294         for (i = 0; i < np->num_tx_rings; i++) {
6295                 struct tx_ring_info *rp = &tx_rings[i];
6296
6297                 pkts += rp->tx_packets;
6298                 bytes += rp->tx_bytes;
6299                 errors += rp->tx_errors;
6300         }
6301
6302 no_rings:
6303         np->dev->stats.tx_packets = pkts;
6304         np->dev->stats.tx_bytes = bytes;
6305         np->dev->stats.tx_errors = errors;
6306 }
6307
6308 static struct net_device_stats *niu_get_stats(struct net_device *dev)
6309 {
6310         struct niu *np = netdev_priv(dev);
6311
6312         if (netif_running(dev)) {
6313                 niu_get_rx_stats(np);
6314                 niu_get_tx_stats(np);
6315         }
6316         return &dev->stats;
6317 }
6318
6319 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6320 {
6321         int i;
6322
6323         for (i = 0; i < 16; i++)
6324                 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6325 }
6326
6327 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6328 {
6329         int i;
6330
6331         for (i = 0; i < 16; i++)
6332                 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6333 }
6334
6335 static void niu_load_hash(struct niu *np, u16 *hash)
6336 {
6337         if (np->flags & NIU_FLAGS_XMAC)
6338                 niu_load_hash_xmac(np, hash);
6339         else
6340                 niu_load_hash_bmac(np, hash);
6341 }
6342
6343 static void niu_set_rx_mode(struct net_device *dev)
6344 {
6345         struct niu *np = netdev_priv(dev);
6346         int i, alt_cnt, err;
6347         struct netdev_hw_addr *ha;
6348         unsigned long flags;
6349         u16 hash[16] = { 0, };
6350
6351         spin_lock_irqsave(&np->lock, flags);
6352         niu_enable_rx_mac(np, 0);
6353
6354         np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6355         if (dev->flags & IFF_PROMISC)
6356                 np->flags |= NIU_FLAGS_PROMISC;
6357         if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6358                 np->flags |= NIU_FLAGS_MCAST;
6359
6360         alt_cnt = netdev_uc_count(dev);
6361         if (alt_cnt > niu_num_alt_addr(np)) {
6362                 alt_cnt = 0;
6363                 np->flags |= NIU_FLAGS_PROMISC;
6364         }
6365
6366         if (alt_cnt) {
6367                 int index = 0;
6368
6369                 netdev_for_each_uc_addr(ha, dev) {
6370                         err = niu_set_alt_mac(np, index, ha->addr);
6371                         if (err)
6372                                 netdev_warn(dev, "Error %d adding alt mac %d\n",
6373                                             err, index);
6374                         err = niu_enable_alt_mac(np, index, 1);
6375                         if (err)
6376                                 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6377                                             err, index);
6378
6379                         index++;
6380                 }
6381         } else {
6382                 int alt_start;
6383                 if (np->flags & NIU_FLAGS_XMAC)
6384                         alt_start = 0;
6385                 else
6386                         alt_start = 1;
6387                 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6388                         err = niu_enable_alt_mac(np, i, 0);
6389                         if (err)
6390                                 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6391                                             err, i);
6392                 }
6393         }
6394         if (dev->flags & IFF_ALLMULTI) {
6395                 for (i = 0; i < 16; i++)
6396                         hash[i] = 0xffff;
6397         } else if (!netdev_mc_empty(dev)) {
6398                 netdev_for_each_mc_addr(ha, dev) {
6399                         u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6400
6401                         crc >>= 24;
6402                         hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6403                 }
6404         }
6405
6406         if (np->flags & NIU_FLAGS_MCAST)
6407                 niu_load_hash(np, hash);
6408
6409         niu_enable_rx_mac(np, 1);
6410         spin_unlock_irqrestore(&np->lock, flags);
6411 }
6412
6413 static int niu_set_mac_addr(struct net_device *dev, void *p)
6414 {
6415         struct niu *np = netdev_priv(dev);
6416         struct sockaddr *addr = p;
6417         unsigned long flags;
6418
6419         if (!is_valid_ether_addr(addr->sa_data))
6420                 return -EINVAL;
6421
6422         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6423
6424         if (!netif_running(dev))
6425                 return 0;
6426
6427         spin_lock_irqsave(&np->lock, flags);
6428         niu_enable_rx_mac(np, 0);
6429         niu_set_primary_mac(np, dev->dev_addr);
6430         niu_enable_rx_mac(np, 1);
6431         spin_unlock_irqrestore(&np->lock, flags);
6432
6433         return 0;
6434 }
6435
6436 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6437 {
6438         return -EOPNOTSUPP;
6439 }
6440
6441 static void niu_netif_stop(struct niu *np)
6442 {
6443         np->dev->trans_start = jiffies; /* prevent tx timeout */
6444
6445         niu_disable_napi(np);
6446
6447         netif_tx_disable(np->dev);
6448 }
6449
6450 static void niu_netif_start(struct niu *np)
6451 {
6452         /* NOTE: unconditional netif_wake_queue is only appropriate
6453          * so long as all callers are assured to have free tx slots
6454          * (such as after niu_init_hw).
6455          */
6456         netif_tx_wake_all_queues(np->dev);
6457
6458         niu_enable_napi(np);
6459
6460         niu_enable_interrupts(np, 1);
6461 }
6462
6463 static void niu_reset_buffers(struct niu *np)
6464 {
6465         int i, j, k, err;
6466
6467         if (np->rx_rings) {
6468                 for (i = 0; i < np->num_rx_rings; i++) {
6469                         struct rx_ring_info *rp = &np->rx_rings[i];
6470
6471                         for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6472                                 struct page *page;
6473
6474                                 page = rp->rxhash[j];
6475                                 while (page) {
6476                                         struct page *next =
6477                                                 (struct page *) page->mapping;
6478                                         u64 base = page->index;
6479                                         base = base >> RBR_DESCR_ADDR_SHIFT;
6480                                         rp->rbr[k++] = cpu_to_le32(base);
6481                                         page = next;
6482                                 }
6483                         }
6484                         for (; k < MAX_RBR_RING_SIZE; k++) {
6485                                 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6486                                 if (unlikely(err))
6487                                         break;
6488                         }
6489
6490                         rp->rbr_index = rp->rbr_table_size - 1;
6491                         rp->rcr_index = 0;
6492                         rp->rbr_pending = 0;
6493                         rp->rbr_refill_pending = 0;
6494                 }
6495         }
6496         if (np->tx_rings) {
6497                 for (i = 0; i < np->num_tx_rings; i++) {
6498                         struct tx_ring_info *rp = &np->tx_rings[i];
6499
6500                         for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6501                                 if (rp->tx_buffs[j].skb)
6502                                         (void) release_tx_packet(np, rp, j);
6503                         }
6504
6505                         rp->pending = MAX_TX_RING_SIZE;
6506                         rp->prod = 0;
6507                         rp->cons = 0;
6508                         rp->wrap_bit = 0;
6509                 }
6510         }
6511 }
6512
6513 static void niu_reset_task(struct work_struct *work)
6514 {
6515         struct niu *np = container_of(work, struct niu, reset_task);
6516         unsigned long flags;
6517         int err;
6518
6519         spin_lock_irqsave(&np->lock, flags);
6520         if (!netif_running(np->dev)) {
6521                 spin_unlock_irqrestore(&np->lock, flags);
6522                 return;
6523         }
6524
6525         spin_unlock_irqrestore(&np->lock, flags);
6526
6527         del_timer_sync(&np->timer);
6528
6529         niu_netif_stop(np);
6530
6531         spin_lock_irqsave(&np->lock, flags);
6532
6533         niu_stop_hw(np);
6534
6535         spin_unlock_irqrestore(&np->lock, flags);
6536
6537         niu_reset_buffers(np);
6538
6539         spin_lock_irqsave(&np->lock, flags);
6540
6541         err = niu_init_hw(np);
6542         if (!err) {
6543                 np->timer.expires = jiffies + HZ;
6544                 add_timer(&np->timer);
6545                 niu_netif_start(np);
6546         }
6547
6548         spin_unlock_irqrestore(&np->lock, flags);
6549 }
6550
6551 static void niu_tx_timeout(struct net_device *dev)
6552 {
6553         struct niu *np = netdev_priv(dev);
6554
6555         dev_err(np->device, "%s: Transmit timed out, resetting\n",
6556                 dev->name);
6557
6558         schedule_work(&np->reset_task);
6559 }
6560
6561 static void niu_set_txd(struct tx_ring_info *rp, int index,
6562                         u64 mapping, u64 len, u64 mark,
6563                         u64 n_frags)
6564 {
6565         __le64 *desc = &rp->descr[index];
6566
6567         *desc = cpu_to_le64(mark |
6568                             (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6569                             (len << TX_DESC_TR_LEN_SHIFT) |
6570                             (mapping & TX_DESC_SAD));
6571 }
6572
6573 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6574                                 u64 pad_bytes, u64 len)
6575 {
6576         u16 eth_proto, eth_proto_inner;
6577         u64 csum_bits, l3off, ihl, ret;
6578         u8 ip_proto;
6579         int ipv6;
6580
6581         eth_proto = be16_to_cpu(ehdr->h_proto);
6582         eth_proto_inner = eth_proto;
6583         if (eth_proto == ETH_P_8021Q) {
6584                 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6585                 __be16 val = vp->h_vlan_encapsulated_proto;
6586
6587                 eth_proto_inner = be16_to_cpu(val);
6588         }
6589
6590         ipv6 = ihl = 0;
6591         switch (skb->protocol) {
6592         case cpu_to_be16(ETH_P_IP):
6593                 ip_proto = ip_hdr(skb)->protocol;
6594                 ihl = ip_hdr(skb)->ihl;
6595                 break;
6596         case cpu_to_be16(ETH_P_IPV6):
6597                 ip_proto = ipv6_hdr(skb)->nexthdr;
6598                 ihl = (40 >> 2);
6599                 ipv6 = 1;
6600                 break;
6601         default:
6602                 ip_proto = ihl = 0;
6603                 break;
6604         }
6605
6606         csum_bits = TXHDR_CSUM_NONE;
6607         if (skb->ip_summed == CHECKSUM_PARTIAL) {
6608                 u64 start, stuff;
6609
6610                 csum_bits = (ip_proto == IPPROTO_TCP ?
6611                              TXHDR_CSUM_TCP :
6612                              (ip_proto == IPPROTO_UDP ?
6613                               TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6614
6615                 start = skb_checksum_start_offset(skb) -
6616                         (pad_bytes + sizeof(struct tx_pkt_hdr));
6617                 stuff = start + skb->csum_offset;
6618
6619                 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6620                 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6621         }
6622
6623         l3off = skb_network_offset(skb) -
6624                 (pad_bytes + sizeof(struct tx_pkt_hdr));
6625
6626         ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6627                (len << TXHDR_LEN_SHIFT) |
6628                ((l3off / 2) << TXHDR_L3START_SHIFT) |
6629                (ihl << TXHDR_IHL_SHIFT) |
6630                ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6631                ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6632                (ipv6 ? TXHDR_IP_VER : 0) |
6633                csum_bits);
6634
6635         return ret;
6636 }
6637
6638 static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6639                                   struct net_device *dev)
6640 {
6641         struct niu *np = netdev_priv(dev);
6642         unsigned long align, headroom;
6643         struct netdev_queue *txq;
6644         struct tx_ring_info *rp;
6645         struct tx_pkt_hdr *tp;
6646         unsigned int len, nfg;
6647         struct ethhdr *ehdr;
6648         int prod, i, tlen;
6649         u64 mapping, mrk;
6650
6651         i = skb_get_queue_mapping(skb);
6652         rp = &np->tx_rings[i];
6653         txq = netdev_get_tx_queue(dev, i);
6654
6655         if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6656                 netif_tx_stop_queue(txq);
6657                 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6658                 rp->tx_errors++;
6659                 return NETDEV_TX_BUSY;
6660         }
6661
6662         if (skb->len < ETH_ZLEN) {
6663                 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6664
6665                 if (skb_pad(skb, pad_bytes))
6666                         goto out;
6667                 skb_put(skb, pad_bytes);
6668         }
6669
6670         len = sizeof(struct tx_pkt_hdr) + 15;
6671         if (skb_headroom(skb) < len) {
6672                 struct sk_buff *skb_new;
6673
6674                 skb_new = skb_realloc_headroom(skb, len);
6675                 if (!skb_new) {
6676                         rp->tx_errors++;
6677                         goto out_drop;
6678                 }
6679                 kfree_skb(skb);
6680                 skb = skb_new;
6681         } else
6682                 skb_orphan(skb);
6683
6684         align = ((unsigned long) skb->data & (16 - 1));
6685         headroom = align + sizeof(struct tx_pkt_hdr);
6686
6687         ehdr = (struct ethhdr *) skb->data;
6688         tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6689
6690         len = skb->len - sizeof(struct tx_pkt_hdr);
6691         tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6692         tp->resv = 0;
6693
6694         len = skb_headlen(skb);
6695         mapping = np->ops->map_single(np->device, skb->data,
6696                                       len, DMA_TO_DEVICE);
6697
6698         prod = rp->prod;
6699
6700         rp->tx_buffs[prod].skb = skb;
6701         rp->tx_buffs[prod].mapping = mapping;
6702
6703         mrk = TX_DESC_SOP;
6704         if (++rp->mark_counter == rp->mark_freq) {
6705                 rp->mark_counter = 0;
6706                 mrk |= TX_DESC_MARK;
6707                 rp->mark_pending++;
6708         }
6709
6710         tlen = len;
6711         nfg = skb_shinfo(skb)->nr_frags;
6712         while (tlen > 0) {
6713                 tlen -= MAX_TX_DESC_LEN;
6714                 nfg++;
6715         }
6716
6717         while (len > 0) {
6718                 unsigned int this_len = len;
6719
6720                 if (this_len > MAX_TX_DESC_LEN)
6721                         this_len = MAX_TX_DESC_LEN;
6722
6723                 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6724                 mrk = nfg = 0;
6725
6726                 prod = NEXT_TX(rp, prod);
6727                 mapping += this_len;
6728                 len -= this_len;
6729         }
6730
6731         for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
6732                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6733
6734                 len = frag->size;
6735                 mapping = np->ops->map_page(np->device, frag->page,
6736                                             frag->page_offset, len,
6737                                             DMA_TO_DEVICE);
6738
6739                 rp->tx_buffs[prod].skb = NULL;
6740                 rp->tx_buffs[prod].mapping = mapping;
6741
6742                 niu_set_txd(rp, prod, mapping, len, 0, 0);
6743
6744                 prod = NEXT_TX(rp, prod);
6745         }
6746
6747         if (prod < rp->prod)
6748                 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6749         rp->prod = prod;
6750
6751         nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6752
6753         if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6754                 netif_tx_stop_queue(txq);
6755                 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6756                         netif_tx_wake_queue(txq);
6757         }
6758
6759 out:
6760         return NETDEV_TX_OK;
6761
6762 out_drop:
6763         rp->tx_errors++;
6764         kfree_skb(skb);
6765         goto out;
6766 }
6767
6768 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6769 {
6770         struct niu *np = netdev_priv(dev);
6771         int err, orig_jumbo, new_jumbo;
6772
6773         if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6774                 return -EINVAL;
6775
6776         orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6777         new_jumbo = (new_mtu > ETH_DATA_LEN);
6778
6779         dev->mtu = new_mtu;
6780
6781         if (!netif_running(dev) ||
6782             (orig_jumbo == new_jumbo))
6783                 return 0;
6784
6785         niu_full_shutdown(np, dev);
6786
6787         niu_free_channels(np);
6788
6789         niu_enable_napi(np);
6790
6791         err = niu_alloc_channels(np);
6792         if (err)
6793                 return err;
6794
6795         spin_lock_irq(&np->lock);
6796
6797         err = niu_init_hw(np);
6798         if (!err) {
6799                 init_timer(&np->timer);
6800                 np->timer.expires = jiffies + HZ;
6801                 np->timer.data = (unsigned long) np;
6802                 np->timer.function = niu_timer;
6803
6804                 err = niu_enable_interrupts(np, 1);
6805                 if (err)
6806                         niu_stop_hw(np);
6807         }
6808
6809         spin_unlock_irq(&np->lock);
6810
6811         if (!err) {
6812                 netif_tx_start_all_queues(dev);
6813                 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6814                         netif_carrier_on(dev);
6815
6816                 add_timer(&np->timer);
6817         }
6818
6819         return err;
6820 }
6821
6822 static void niu_get_drvinfo(struct net_device *dev,
6823                             struct ethtool_drvinfo *info)
6824 {
6825         struct niu *np = netdev_priv(dev);
6826         struct niu_vpd *vpd = &np->vpd;
6827
6828         strcpy(info->driver, DRV_MODULE_NAME);
6829         strcpy(info->version, DRV_MODULE_VERSION);
6830         sprintf(info->fw_version, "%d.%d",
6831                 vpd->fcode_major, vpd->fcode_minor);
6832         if (np->parent->plat_type != PLAT_TYPE_NIU)
6833                 strcpy(info->bus_info, pci_name(np->pdev));
6834 }
6835
6836 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6837 {
6838         struct niu *np = netdev_priv(dev);
6839         struct niu_link_config *lp;
6840
6841         lp = &np->link_config;
6842
6843         memset(cmd, 0, sizeof(*cmd));
6844         cmd->phy_address = np->phy_addr;
6845         cmd->supported = lp->supported;
6846         cmd->advertising = lp->active_advertising;
6847         cmd->autoneg = lp->active_autoneg;
6848         ethtool_cmd_speed_set(cmd, lp->active_speed);
6849         cmd->duplex = lp->active_duplex;
6850         cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6851         cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
6852                 XCVR_EXTERNAL : XCVR_INTERNAL;
6853
6854         return 0;
6855 }
6856
6857 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6858 {
6859         struct niu *np = netdev_priv(dev);
6860         struct niu_link_config *lp = &np->link_config;
6861
6862         lp->advertising = cmd->advertising;
6863         lp->speed = ethtool_cmd_speed(cmd);
6864         lp->duplex = cmd->duplex;
6865         lp->autoneg = cmd->autoneg;
6866         return niu_init_link(np);
6867 }
6868
6869 static u32 niu_get_msglevel(struct net_device *dev)
6870 {
6871         struct niu *np = netdev_priv(dev);
6872         return np->msg_enable;
6873 }
6874
6875 static void niu_set_msglevel(struct net_device *dev, u32 value)
6876 {
6877         struct niu *np = netdev_priv(dev);
6878         np->msg_enable = value;
6879 }
6880
6881 static int niu_nway_reset(struct net_device *dev)
6882 {
6883         struct niu *np = netdev_priv(dev);
6884
6885         if (np->link_config.autoneg)
6886                 return niu_init_link(np);
6887
6888         return 0;
6889 }
6890
6891 static int niu_get_eeprom_len(struct net_device *dev)
6892 {
6893         struct niu *np = netdev_priv(dev);
6894
6895         return np->eeprom_len;
6896 }
6897
6898 static int niu_get_eeprom(struct net_device *dev,
6899                           struct ethtool_eeprom *eeprom, u8 *data)
6900 {
6901         struct niu *np = netdev_priv(dev);
6902         u32 offset, len, val;
6903
6904         offset = eeprom->offset;
6905         len = eeprom->len;
6906
6907         if (offset + len < offset)
6908                 return -EINVAL;
6909         if (offset >= np->eeprom_len)
6910                 return -EINVAL;
6911         if (offset + len > np->eeprom_len)
6912                 len = eeprom->len = np->eeprom_len - offset;
6913
6914         if (offset & 3) {
6915                 u32 b_offset, b_count;
6916
6917                 b_offset = offset & 3;
6918                 b_count = 4 - b_offset;
6919                 if (b_count > len)
6920                         b_count = len;
6921
6922                 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6923                 memcpy(data, ((char *)&val) + b_offset, b_count);
6924                 data += b_count;
6925                 len -= b_count;
6926                 offset += b_count;
6927         }
6928         while (len >= 4) {
6929                 val = nr64(ESPC_NCR(offset / 4));
6930                 memcpy(data, &val, 4);
6931                 data += 4;
6932                 len -= 4;
6933                 offset += 4;
6934         }
6935         if (len) {
6936                 val = nr64(ESPC_NCR(offset / 4));
6937                 memcpy(data, &val, len);
6938         }
6939         return 0;
6940 }
6941
6942 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6943 {
6944         switch (flow_type) {
6945         case TCP_V4_FLOW:
6946         case TCP_V6_FLOW:
6947                 *pid = IPPROTO_TCP;
6948                 break;
6949         case UDP_V4_FLOW:
6950         case UDP_V6_FLOW:
6951                 *pid = IPPROTO_UDP;
6952                 break;
6953         case SCTP_V4_FLOW:
6954         case SCTP_V6_FLOW:
6955                 *pid = IPPROTO_SCTP;
6956                 break;
6957         case AH_V4_FLOW:
6958         case AH_V6_FLOW:
6959                 *pid = IPPROTO_AH;
6960                 break;
6961         case ESP_V4_FLOW:
6962         case ESP_V6_FLOW:
6963                 *pid = IPPROTO_ESP;
6964                 break;
6965         default:
6966                 *pid = 0;
6967                 break;
6968         }
6969 }
6970
6971 static int niu_class_to_ethflow(u64 class, int *flow_type)
6972 {
6973         switch (class) {
6974         case CLASS_CODE_TCP_IPV4:
6975                 *flow_type = TCP_V4_FLOW;
6976                 break;
6977         case CLASS_CODE_UDP_IPV4:
6978                 *flow_type = UDP_V4_FLOW;
6979                 break;
6980         case CLASS_CODE_AH_ESP_IPV4:
6981                 *flow_type = AH_V4_FLOW;
6982                 break;
6983         case CLASS_CODE_SCTP_IPV4:
6984                 *flow_type = SCTP_V4_FLOW;
6985                 break;
6986         case CLASS_CODE_TCP_IPV6:
6987                 *flow_type = TCP_V6_FLOW;
6988                 break;
6989         case CLASS_CODE_UDP_IPV6:
6990                 *flow_type = UDP_V6_FLOW;
6991                 break;
6992         case CLASS_CODE_AH_ESP_IPV6:
6993                 *flow_type = AH_V6_FLOW;
6994                 break;
6995         case CLASS_CODE_SCTP_IPV6:
6996                 *flow_type = SCTP_V6_FLOW;
6997                 break;
6998         case CLASS_CODE_USER_PROG1:
6999         case CLASS_CODE_USER_PROG2:
7000         case CLASS_CODE_USER_PROG3:
7001         case CLASS_CODE_USER_PROG4:
7002                 *flow_type = IP_USER_FLOW;
7003                 break;
7004         default:
7005                 return 0;
7006         }
7007
7008         return 1;
7009 }
7010
7011 static int niu_ethflow_to_class(int flow_type, u64 *class)
7012 {
7013         switch (flow_type) {
7014         case TCP_V4_FLOW:
7015                 *class = CLASS_CODE_TCP_IPV4;
7016                 break;
7017         case UDP_V4_FLOW:
7018                 *class = CLASS_CODE_UDP_IPV4;
7019                 break;
7020         case AH_ESP_V4_FLOW:
7021         case AH_V4_FLOW:
7022         case ESP_V4_FLOW:
7023                 *class = CLASS_CODE_AH_ESP_IPV4;
7024                 break;
7025         case SCTP_V4_FLOW:
7026                 *class = CLASS_CODE_SCTP_IPV4;
7027                 break;
7028         case TCP_V6_FLOW:
7029                 *class = CLASS_CODE_TCP_IPV6;
7030                 break;
7031         case UDP_V6_FLOW:
7032                 *class = CLASS_CODE_UDP_IPV6;
7033                 break;
7034         case AH_ESP_V6_FLOW:
7035         case AH_V6_FLOW:
7036         case ESP_V6_FLOW:
7037                 *class = CLASS_CODE_AH_ESP_IPV6;
7038                 break;
7039         case SCTP_V6_FLOW:
7040                 *class = CLASS_CODE_SCTP_IPV6;
7041                 break;
7042         default:
7043                 return 0;
7044         }
7045
7046         return 1;
7047 }
7048
7049 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7050 {
7051         u64 ethflow = 0;
7052
7053         if (flow_key & FLOW_KEY_L2DA)
7054                 ethflow |= RXH_L2DA;
7055         if (flow_key & FLOW_KEY_VLAN)
7056                 ethflow |= RXH_VLAN;
7057         if (flow_key & FLOW_KEY_IPSA)
7058                 ethflow |= RXH_IP_SRC;
7059         if (flow_key & FLOW_KEY_IPDA)
7060                 ethflow |= RXH_IP_DST;
7061         if (flow_key & FLOW_KEY_PROTO)
7062                 ethflow |= RXH_L3_PROTO;
7063         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7064                 ethflow |= RXH_L4_B_0_1;
7065         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7066                 ethflow |= RXH_L4_B_2_3;
7067
7068         return ethflow;
7069
7070 }
7071
7072 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7073 {
7074         u64 key = 0;
7075
7076         if (ethflow & RXH_L2DA)
7077                 key |= FLOW_KEY_L2DA;
7078         if (ethflow & RXH_VLAN)
7079                 key |= FLOW_KEY_VLAN;
7080         if (ethflow & RXH_IP_SRC)
7081                 key |= FLOW_KEY_IPSA;
7082         if (ethflow & RXH_IP_DST)
7083                 key |= FLOW_KEY_IPDA;
7084         if (ethflow & RXH_L3_PROTO)
7085                 key |= FLOW_KEY_PROTO;
7086         if (ethflow & RXH_L4_B_0_1)
7087                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7088         if (ethflow & RXH_L4_B_2_3)
7089                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7090
7091         *flow_key = key;
7092
7093         return 1;
7094
7095 }
7096
7097 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7098 {
7099         u64 class;
7100
7101         nfc->data = 0;
7102
7103         if (!niu_ethflow_to_class(nfc->flow_type, &class))
7104                 return -EINVAL;
7105
7106         if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7107             TCAM_KEY_DISC)
7108                 nfc->data = RXH_DISCARD;
7109         else
7110                 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7111                                                       CLASS_CODE_USER_PROG1]);
7112         return 0;
7113 }
7114
7115 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7116                                         struct ethtool_rx_flow_spec *fsp)
7117 {
7118         u32 tmp;
7119         u16 prt;
7120
7121         tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7122         fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7123
7124         tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7125         fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7126
7127         tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7128         fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7129
7130         tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7131         fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7132
7133         fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7134                 TCAM_V4KEY2_TOS_SHIFT;
7135         fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7136                 TCAM_V4KEY2_TOS_SHIFT;
7137
7138         switch (fsp->flow_type) {
7139         case TCP_V4_FLOW:
7140         case UDP_V4_FLOW:
7141         case SCTP_V4_FLOW:
7142                 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7143                         TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7144                 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7145
7146                 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7147                         TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7148                 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7149
7150                 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7151                         TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7152                 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7153
7154                 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7155                          TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7156                 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7157                 break;
7158         case AH_V4_FLOW:
7159         case ESP_V4_FLOW:
7160                 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7161                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7162                 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7163
7164                 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7165                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7166                 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7167                 break;
7168         case IP_USER_FLOW:
7169                 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7170                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7171                 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7172
7173                 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7174                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7175                 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7176
7177                 fsp->h_u.usr_ip4_spec.proto =
7178                         (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7179                         TCAM_V4KEY2_PROTO_SHIFT;
7180                 fsp->m_u.usr_ip4_spec.proto =
7181                         (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7182                         TCAM_V4KEY2_PROTO_SHIFT;
7183
7184                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7185                 break;
7186         default:
7187                 break;
7188         }
7189 }
7190
7191 static int niu_get_ethtool_tcam_entry(struct niu *np,
7192                                       struct ethtool_rxnfc *nfc)
7193 {
7194         struct niu_parent *parent = np->parent;
7195         struct niu_tcam_entry *tp;
7196         struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7197         u16 idx;
7198         u64 class;
7199         int ret = 0;
7200
7201         idx = tcam_get_index(np, (u16)nfc->fs.location);
7202
7203         tp = &parent->tcam[idx];
7204         if (!tp->valid) {
7205                 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7206                             parent->index, (u16)nfc->fs.location, idx);
7207                 return -EINVAL;
7208         }
7209
7210         /* fill the flow spec entry */
7211         class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7212                 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7213         ret = niu_class_to_ethflow(class, &fsp->flow_type);
7214
7215         if (ret < 0) {
7216                 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7217                             parent->index);
7218                 ret = -EINVAL;
7219                 goto out;
7220         }
7221
7222         if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7223                 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7224                         TCAM_V4KEY2_PROTO_SHIFT;
7225                 if (proto == IPPROTO_ESP) {
7226                         if (fsp->flow_type == AH_V4_FLOW)
7227                                 fsp->flow_type = ESP_V4_FLOW;
7228                         else
7229                                 fsp->flow_type = ESP_V6_FLOW;
7230                 }
7231         }
7232
7233         switch (fsp->flow_type) {
7234         case TCP_V4_FLOW:
7235         case UDP_V4_FLOW:
7236         case SCTP_V4_FLOW:
7237         case AH_V4_FLOW:
7238         case ESP_V4_FLOW:
7239                 niu_get_ip4fs_from_tcam_key(tp, fsp);
7240                 break;
7241         case TCP_V6_FLOW:
7242         case UDP_V6_FLOW:
7243         case SCTP_V6_FLOW:
7244         case AH_V6_FLOW:
7245         case ESP_V6_FLOW:
7246                 /* Not yet implemented */
7247                 ret = -EINVAL;
7248                 break;
7249         case IP_USER_FLOW:
7250                 niu_get_ip4fs_from_tcam_key(tp, fsp);
7251                 break;
7252         default:
7253                 ret = -EINVAL;
7254                 break;
7255         }
7256
7257         if (ret < 0)
7258                 goto out;
7259
7260         if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7261                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7262         else
7263                 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7264                         TCAM_ASSOCDATA_OFFSET_SHIFT;
7265
7266         /* put the tcam size here */
7267         nfc->data = tcam_get_size(np);
7268 out:
7269         return ret;
7270 }
7271
7272 static int niu_get_ethtool_tcam_all(struct niu *np,
7273                                     struct ethtool_rxnfc *nfc,
7274                                     u32 *rule_locs)
7275 {
7276         struct niu_parent *parent = np->parent;
7277         struct niu_tcam_entry *tp;
7278         int i, idx, cnt;
7279         unsigned long flags;
7280         int ret = 0;
7281
7282         /* put the tcam size here */
7283         nfc->data = tcam_get_size(np);
7284
7285         niu_lock_parent(np, flags);
7286         for (cnt = 0, i = 0; i < nfc->data; i++) {
7287                 idx = tcam_get_index(np, i);
7288                 tp = &parent->tcam[idx];
7289                 if (!tp->valid)
7290                         continue;
7291                 if (cnt == nfc->rule_cnt) {
7292                         ret = -EMSGSIZE;
7293                         break;
7294                 }
7295                 rule_locs[cnt] = i;
7296                 cnt++;
7297         }
7298         niu_unlock_parent(np, flags);
7299
7300         return ret;
7301 }
7302
7303 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7304                        void *rule_locs)
7305 {
7306         struct niu *np = netdev_priv(dev);
7307         int ret = 0;
7308
7309         switch (cmd->cmd) {
7310         case ETHTOOL_GRXFH:
7311                 ret = niu_get_hash_opts(np, cmd);
7312                 break;
7313         case ETHTOOL_GRXRINGS:
7314                 cmd->data = np->num_rx_rings;
7315                 break;
7316         case ETHTOOL_GRXCLSRLCNT:
7317                 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7318                 break;
7319         case ETHTOOL_GRXCLSRULE:
7320                 ret = niu_get_ethtool_tcam_entry(np, cmd);
7321                 break;
7322         case ETHTOOL_GRXCLSRLALL:
7323                 ret = niu_get_ethtool_tcam_all(np, cmd, (u32 *)rule_locs);
7324                 break;
7325         default:
7326                 ret = -EINVAL;
7327                 break;
7328         }
7329
7330         return ret;
7331 }
7332
7333 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7334 {
7335         u64 class;
7336         u64 flow_key = 0;
7337         unsigned long flags;
7338
7339         if (!niu_ethflow_to_class(nfc->flow_type, &class))
7340                 return -EINVAL;
7341
7342         if (class < CLASS_CODE_USER_PROG1 ||
7343             class > CLASS_CODE_SCTP_IPV6)
7344                 return -EINVAL;
7345
7346         if (nfc->data & RXH_DISCARD) {
7347                 niu_lock_parent(np, flags);
7348                 flow_key = np->parent->tcam_key[class -
7349                                                CLASS_CODE_USER_PROG1];
7350                 flow_key |= TCAM_KEY_DISC;
7351                 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7352                 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7353                 niu_unlock_parent(np, flags);
7354                 return 0;
7355         } else {
7356                 /* Discard was set before, but is not set now */
7357                 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7358                     TCAM_KEY_DISC) {
7359                         niu_lock_parent(np, flags);
7360                         flow_key = np->parent->tcam_key[class -
7361                                                CLASS_CODE_USER_PROG1];
7362                         flow_key &= ~TCAM_KEY_DISC;
7363                         nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7364                              flow_key);
7365                         np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7366                                 flow_key;
7367                         niu_unlock_parent(np, flags);
7368                 }
7369         }
7370
7371         if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7372                 return -EINVAL;
7373
7374         niu_lock_parent(np, flags);
7375         nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7376         np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7377         niu_unlock_parent(np, flags);
7378
7379         return 0;
7380 }
7381
7382 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7383                                        struct niu_tcam_entry *tp,
7384                                        int l2_rdc_tab, u64 class)
7385 {
7386         u8 pid = 0;
7387         u32 sip, dip, sipm, dipm, spi, spim;
7388         u16 sport, dport, spm, dpm;
7389
7390         sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7391         sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7392         dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7393         dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7394
7395         tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7396         tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7397         tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7398         tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7399
7400         tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7401         tp->key[3] |= dip;
7402
7403         tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7404         tp->key_mask[3] |= dipm;
7405
7406         tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7407                        TCAM_V4KEY2_TOS_SHIFT);
7408         tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7409                             TCAM_V4KEY2_TOS_SHIFT);
7410         switch (fsp->flow_type) {
7411         case TCP_V4_FLOW:
7412         case UDP_V4_FLOW:
7413         case SCTP_V4_FLOW:
7414                 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7415                 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7416                 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7417                 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7418
7419                 tp->key[2] |= (((u64)sport << 16) | dport);
7420                 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7421                 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7422                 break;
7423         case AH_V4_FLOW:
7424         case ESP_V4_FLOW:
7425                 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7426                 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7427
7428                 tp->key[2] |= spi;
7429                 tp->key_mask[2] |= spim;
7430                 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7431                 break;
7432         case IP_USER_FLOW:
7433                 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7434                 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7435
7436                 tp->key[2] |= spi;
7437                 tp->key_mask[2] |= spim;
7438                 pid = fsp->h_u.usr_ip4_spec.proto;
7439                 break;
7440         default:
7441                 break;
7442         }
7443
7444         tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7445         if (pid) {
7446                 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7447         }
7448 }
7449
7450 static int niu_add_ethtool_tcam_entry(struct niu *np,
7451                                       struct ethtool_rxnfc *nfc)
7452 {
7453         struct niu_parent *parent = np->parent;
7454         struct niu_tcam_entry *tp;
7455         struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7456         struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7457         int l2_rdc_table = rdc_table->first_table_num;
7458         u16 idx;
7459         u64 class;
7460         unsigned long flags;
7461         int err, ret;
7462
7463         ret = 0;
7464
7465         idx = nfc->fs.location;
7466         if (idx >= tcam_get_size(np))
7467                 return -EINVAL;
7468
7469         if (fsp->flow_type == IP_USER_FLOW) {
7470                 int i;
7471                 int add_usr_cls = 0;
7472                 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7473                 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7474
7475                 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7476                         return -EINVAL;
7477
7478                 niu_lock_parent(np, flags);
7479
7480                 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7481                         if (parent->l3_cls[i]) {
7482                                 if (uspec->proto == parent->l3_cls_pid[i]) {
7483                                         class = parent->l3_cls[i];
7484                                         parent->l3_cls_refcnt[i]++;
7485                                         add_usr_cls = 1;
7486                                         break;
7487                                 }
7488                         } else {
7489                                 /* Program new user IP class */
7490                                 switch (i) {
7491                                 case 0:
7492                                         class = CLASS_CODE_USER_PROG1;
7493                                         break;
7494                                 case 1:
7495                                         class = CLASS_CODE_USER_PROG2;
7496                                         break;
7497                                 case 2:
7498                                         class = CLASS_CODE_USER_PROG3;
7499                                         break;
7500                                 case 3:
7501                                         class = CLASS_CODE_USER_PROG4;
7502                                         break;
7503                                 default:
7504                                         break;
7505                                 }
7506                                 ret = tcam_user_ip_class_set(np, class, 0,
7507                                                              uspec->proto,
7508                                                              uspec->tos,
7509                                                              umask->tos);
7510                                 if (ret)
7511                                         goto out;
7512
7513                                 ret = tcam_user_ip_class_enable(np, class, 1);
7514                                 if (ret)
7515                                         goto out;
7516                                 parent->l3_cls[i] = class;
7517                                 parent->l3_cls_pid[i] = uspec->proto;
7518                                 parent->l3_cls_refcnt[i]++;
7519                                 add_usr_cls = 1;
7520                                 break;
7521                         }
7522                 }
7523                 if (!add_usr_cls) {
7524                         netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7525                                     parent->index, __func__, uspec->proto);
7526                         ret = -EINVAL;
7527                         goto out;
7528                 }
7529                 niu_unlock_parent(np, flags);
7530         } else {
7531                 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7532                         return -EINVAL;
7533                 }
7534         }
7535
7536         niu_lock_parent(np, flags);
7537
7538         idx = tcam_get_index(np, idx);
7539         tp = &parent->tcam[idx];
7540
7541         memset(tp, 0, sizeof(*tp));
7542
7543         /* fill in the tcam key and mask */
7544         switch (fsp->flow_type) {
7545         case TCP_V4_FLOW:
7546         case UDP_V4_FLOW:
7547         case SCTP_V4_FLOW:
7548         case AH_V4_FLOW:
7549         case ESP_V4_FLOW:
7550                 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7551                 break;
7552         case TCP_V6_FLOW:
7553         case UDP_V6_FLOW:
7554         case SCTP_V6_FLOW:
7555         case AH_V6_FLOW:
7556         case ESP_V6_FLOW:
7557                 /* Not yet implemented */
7558                 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7559                             parent->index, __func__, fsp->flow_type);
7560                 ret = -EINVAL;
7561                 goto out;
7562         case IP_USER_FLOW:
7563                 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7564                 break;
7565         default:
7566                 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7567                             parent->index, __func__, fsp->flow_type);
7568                 ret = -EINVAL;
7569                 goto out;
7570         }
7571
7572         /* fill in the assoc data */
7573         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7574                 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7575         } else {
7576                 if (fsp->ring_cookie >= np->num_rx_rings) {
7577                         netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7578                                     parent->index, __func__,
7579                                     (long long)fsp->ring_cookie);
7580                         ret = -EINVAL;
7581                         goto out;
7582                 }
7583                 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7584                                   (fsp->ring_cookie <<
7585                                    TCAM_ASSOCDATA_OFFSET_SHIFT));
7586         }
7587
7588         err = tcam_write(np, idx, tp->key, tp->key_mask);
7589         if (err) {
7590                 ret = -EINVAL;
7591                 goto out;
7592         }
7593         err = tcam_assoc_write(np, idx, tp->assoc_data);
7594         if (err) {
7595                 ret = -EINVAL;
7596                 goto out;
7597         }
7598
7599         /* validate the entry */
7600         tp->valid = 1;
7601         np->clas.tcam_valid_entries++;
7602 out:
7603         niu_unlock_parent(np, flags);
7604
7605         return ret;
7606 }
7607
7608 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7609 {
7610         struct niu_parent *parent = np->parent;
7611         struct niu_tcam_entry *tp;
7612         u16 idx;
7613         unsigned long flags;
7614         u64 class;
7615         int ret = 0;
7616
7617         if (loc >= tcam_get_size(np))
7618                 return -EINVAL;
7619
7620         niu_lock_parent(np, flags);
7621
7622         idx = tcam_get_index(np, loc);
7623         tp = &parent->tcam[idx];
7624
7625         /* if the entry is of a user defined class, then update*/
7626         class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7627                 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7628
7629         if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7630                 int i;
7631                 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7632                         if (parent->l3_cls[i] == class) {
7633                                 parent->l3_cls_refcnt[i]--;
7634                                 if (!parent->l3_cls_refcnt[i]) {
7635                                         /* disable class */
7636                                         ret = tcam_user_ip_class_enable(np,
7637                                                                         class,
7638                                                                         0);
7639                                         if (ret)
7640                                                 goto out;
7641                                         parent->l3_cls[i] = 0;
7642                                         parent->l3_cls_pid[i] = 0;
7643                                 }
7644                                 break;
7645                         }
7646                 }
7647                 if (i == NIU_L3_PROG_CLS) {
7648                         netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7649                                     parent->index, __func__,
7650                                     (unsigned long long)class);
7651                         ret = -EINVAL;
7652                         goto out;
7653                 }
7654         }
7655
7656         ret = tcam_flush(np, idx);
7657         if (ret)
7658                 goto out;
7659
7660         /* invalidate the entry */
7661         tp->valid = 0;
7662         np->clas.tcam_valid_entries--;
7663 out:
7664         niu_unlock_parent(np, flags);
7665
7666         return ret;
7667 }
7668
7669 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7670 {
7671         struct niu *np = netdev_priv(dev);
7672         int ret = 0;
7673
7674         switch (cmd->cmd) {
7675         case ETHTOOL_SRXFH:
7676                 ret = niu_set_hash_opts(np, cmd);
7677                 break;
7678         case ETHTOOL_SRXCLSRLINS:
7679                 ret = niu_add_ethtool_tcam_entry(np, cmd);
7680                 break;
7681         case ETHTOOL_SRXCLSRLDEL:
7682                 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7683                 break;
7684         default:
7685                 ret = -EINVAL;
7686                 break;
7687         }
7688
7689         return ret;
7690 }
7691
7692 static const struct {
7693         const char string[ETH_GSTRING_LEN];
7694 } niu_xmac_stat_keys[] = {
7695         { "tx_frames" },
7696         { "tx_bytes" },
7697         { "tx_fifo_errors" },
7698         { "tx_overflow_errors" },
7699         { "tx_max_pkt_size_errors" },
7700         { "tx_underflow_errors" },
7701         { "rx_local_faults" },
7702         { "rx_remote_faults" },
7703         { "rx_link_faults" },
7704         { "rx_align_errors" },
7705         { "rx_frags" },
7706         { "rx_mcasts" },
7707         { "rx_bcasts" },
7708         { "rx_hist_cnt1" },
7709         { "rx_hist_cnt2" },
7710         { "rx_hist_cnt3" },
7711         { "rx_hist_cnt4" },
7712         { "rx_hist_cnt5" },
7713         { "rx_hist_cnt6" },
7714         { "rx_hist_cnt7" },
7715         { "rx_octets" },
7716         { "rx_code_violations" },
7717         { "rx_len_errors" },
7718         { "rx_crc_errors" },
7719         { "rx_underflows" },
7720         { "rx_overflows" },
7721         { "pause_off_state" },
7722         { "pause_on_state" },
7723         { "pause_received" },
7724 };
7725
7726 #define NUM_XMAC_STAT_KEYS      ARRAY_SIZE(niu_xmac_stat_keys)
7727
7728 static const struct {
7729         const char string[ETH_GSTRING_LEN];
7730 } niu_bmac_stat_keys[] = {
7731         { "tx_underflow_errors" },
7732         { "tx_max_pkt_size_errors" },
7733         { "tx_bytes" },
7734         { "tx_frames" },
7735         { "rx_overflows" },
7736         { "rx_frames" },
7737         { "rx_align_errors" },
7738         { "rx_crc_errors" },
7739         { "rx_len_errors" },
7740         { "pause_off_state" },
7741         { "pause_on_state" },
7742         { "pause_received" },
7743 };
7744
7745 #define NUM_BMAC_STAT_KEYS      ARRAY_SIZE(niu_bmac_stat_keys)
7746
7747 static const struct {
7748         const char string[ETH_GSTRING_LEN];
7749 } niu_rxchan_stat_keys[] = {
7750         { "rx_channel" },
7751         { "rx_packets" },
7752         { "rx_bytes" },
7753         { "rx_dropped" },
7754         { "rx_errors" },
7755 };
7756
7757 #define NUM_RXCHAN_STAT_KEYS    ARRAY_SIZE(niu_rxchan_stat_keys)
7758
7759 static const struct {
7760         const char string[ETH_GSTRING_LEN];
7761 } niu_txchan_stat_keys[] = {
7762         { "tx_channel" },
7763         { "tx_packets" },
7764         { "tx_bytes" },
7765         { "tx_errors" },
7766 };
7767
7768 #define NUM_TXCHAN_STAT_KEYS    ARRAY_SIZE(niu_txchan_stat_keys)
7769
7770 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7771 {
7772         struct niu *np = netdev_priv(dev);
7773         int i;
7774
7775         if (stringset != ETH_SS_STATS)
7776                 return;
7777
7778         if (np->flags & NIU_FLAGS_XMAC) {
7779                 memcpy(data, niu_xmac_stat_keys,
7780                        sizeof(niu_xmac_stat_keys));
7781                 data += sizeof(niu_xmac_stat_keys);
7782         } else {
7783                 memcpy(data, niu_bmac_stat_keys,
7784                        sizeof(niu_bmac_stat_keys));
7785                 data += sizeof(niu_bmac_stat_keys);
7786         }
7787         for (i = 0; i < np->num_rx_rings; i++) {
7788                 memcpy(data, niu_rxchan_stat_keys,
7789                        sizeof(niu_rxchan_stat_keys));
7790                 data += sizeof(niu_rxchan_stat_keys);
7791         }
7792         for (i = 0; i < np->num_tx_rings; i++) {
7793                 memcpy(data, niu_txchan_stat_keys,
7794                        sizeof(niu_txchan_stat_keys));
7795                 data += sizeof(niu_txchan_stat_keys);
7796         }
7797 }
7798
7799 static int niu_get_sset_count(struct net_device *dev, int stringset)
7800 {
7801         struct niu *np = netdev_priv(dev);
7802
7803         if (stringset != ETH_SS_STATS)
7804                 return -EINVAL;
7805
7806         return (np->flags & NIU_FLAGS_XMAC ?
7807                  NUM_XMAC_STAT_KEYS :
7808                  NUM_BMAC_STAT_KEYS) +
7809                 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7810                 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7811 }
7812
7813 static void niu_get_ethtool_stats(struct net_device *dev,
7814                                   struct ethtool_stats *stats, u64 *data)
7815 {
7816         struct niu *np = netdev_priv(dev);
7817         int i;
7818
7819         niu_sync_mac_stats(np);
7820         if (np->flags & NIU_FLAGS_XMAC) {
7821                 memcpy(data, &np->mac_stats.xmac,
7822                        sizeof(struct niu_xmac_stats));
7823                 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7824         } else {
7825                 memcpy(data, &np->mac_stats.bmac,
7826                        sizeof(struct niu_bmac_stats));
7827                 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7828         }
7829         for (i = 0; i < np->num_rx_rings; i++) {
7830                 struct rx_ring_info *rp = &np->rx_rings[i];
7831
7832                 niu_sync_rx_discard_stats(np, rp, 0);
7833
7834                 data[0] = rp->rx_channel;
7835                 data[1] = rp->rx_packets;
7836                 data[2] = rp->rx_bytes;
7837                 data[3] = rp->rx_dropped;
7838                 data[4] = rp->rx_errors;
7839                 data += 5;
7840         }
7841         for (i = 0; i < np->num_tx_rings; i++) {
7842                 struct tx_ring_info *rp = &np->tx_rings[i];
7843
7844                 data[0] = rp->tx_channel;
7845                 data[1] = rp->tx_packets;
7846                 data[2] = rp->tx_bytes;
7847                 data[3] = rp->tx_errors;
7848                 data += 4;
7849         }
7850 }
7851
7852 static u64 niu_led_state_save(struct niu *np)
7853 {
7854         if (np->flags & NIU_FLAGS_XMAC)
7855                 return nr64_mac(XMAC_CONFIG);
7856         else
7857                 return nr64_mac(BMAC_XIF_CONFIG);
7858 }
7859
7860 static void niu_led_state_restore(struct niu *np, u64 val)
7861 {
7862         if (np->flags & NIU_FLAGS_XMAC)
7863                 nw64_mac(XMAC_CONFIG, val);
7864         else
7865                 nw64_mac(BMAC_XIF_CONFIG, val);
7866 }
7867
7868 static void niu_force_led(struct niu *np, int on)
7869 {
7870         u64 val, reg, bit;
7871
7872         if (np->flags & NIU_FLAGS_XMAC) {
7873                 reg = XMAC_CONFIG;
7874                 bit = XMAC_CONFIG_FORCE_LED_ON;
7875         } else {
7876                 reg = BMAC_XIF_CONFIG;
7877                 bit = BMAC_XIF_CONFIG_LINK_LED;
7878         }
7879
7880         val = nr64_mac(reg);
7881         if (on)
7882                 val |= bit;
7883         else
7884                 val &= ~bit;
7885         nw64_mac(reg, val);
7886 }
7887
7888 static int niu_set_phys_id(struct net_device *dev,
7889                            enum ethtool_phys_id_state state)
7890
7891 {
7892         struct niu *np = netdev_priv(dev);
7893
7894         if (!netif_running(dev))
7895                 return -EAGAIN;
7896
7897         switch (state) {
7898         case ETHTOOL_ID_ACTIVE:
7899                 np->orig_led_state = niu_led_state_save(np);
7900                 return 1;       /* cycle on/off once per second */
7901
7902         case ETHTOOL_ID_ON:
7903                 niu_force_led(np, 1);
7904                 break;
7905
7906         case ETHTOOL_ID_OFF:
7907                 niu_force_led(np, 0);
7908                 break;
7909
7910         case ETHTOOL_ID_INACTIVE:
7911                 niu_led_state_restore(np, np->orig_led_state);
7912         }
7913
7914         return 0;
7915 }
7916
7917 static const struct ethtool_ops niu_ethtool_ops = {
7918         .get_drvinfo            = niu_get_drvinfo,
7919         .get_link               = ethtool_op_get_link,
7920         .get_msglevel           = niu_get_msglevel,
7921         .set_msglevel           = niu_set_msglevel,
7922         .nway_reset             = niu_nway_reset,
7923         .get_eeprom_len         = niu_get_eeprom_len,
7924         .get_eeprom             = niu_get_eeprom,
7925         .get_settings           = niu_get_settings,
7926         .set_settings           = niu_set_settings,
7927         .get_strings            = niu_get_strings,
7928         .get_sset_count         = niu_get_sset_count,
7929         .get_ethtool_stats      = niu_get_ethtool_stats,
7930         .set_phys_id            = niu_set_phys_id,
7931         .get_rxnfc              = niu_get_nfc,
7932         .set_rxnfc              = niu_set_nfc,
7933 };
7934
7935 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7936                               int ldg, int ldn)
7937 {
7938         if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7939                 return -EINVAL;
7940         if (ldn < 0 || ldn > LDN_MAX)
7941                 return -EINVAL;
7942
7943         parent->ldg_map[ldn] = ldg;
7944
7945         if (np->parent->plat_type == PLAT_TYPE_NIU) {
7946                 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7947                  * the firmware, and we're not supposed to change them.
7948                  * Validate the mapping, because if it's wrong we probably
7949                  * won't get any interrupts and that's painful to debug.
7950                  */
7951                 if (nr64(LDG_NUM(ldn)) != ldg) {
7952                         dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7953                                 np->port, ldn, ldg,
7954                                 (unsigned long long) nr64(LDG_NUM(ldn)));
7955                         return -EINVAL;
7956                 }
7957         } else
7958                 nw64(LDG_NUM(ldn), ldg);
7959
7960         return 0;
7961 }
7962
7963 static int niu_set_ldg_timer_res(struct niu *np, int res)
7964 {
7965         if (res < 0 || res > LDG_TIMER_RES_VAL)
7966                 return -EINVAL;
7967
7968
7969         nw64(LDG_TIMER_RES, res);
7970
7971         return 0;
7972 }
7973
7974 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7975 {
7976         if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7977             (func < 0 || func > 3) ||
7978             (vector < 0 || vector > 0x1f))
7979                 return -EINVAL;
7980
7981         nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7982
7983         return 0;
7984 }
7985
7986 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
7987 {
7988         u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7989                                  (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7990         int limit;
7991
7992         if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7993                 return -EINVAL;
7994
7995         frame = frame_base;
7996         nw64(ESPC_PIO_STAT, frame);
7997         limit = 64;
7998         do {
7999                 udelay(5);
8000                 frame = nr64(ESPC_PIO_STAT);
8001                 if (frame & ESPC_PIO_STAT_READ_END)
8002                         break;
8003         } while (limit--);
8004         if (!(frame & ESPC_PIO_STAT_READ_END)) {
8005                 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8006                         (unsigned long long) frame);
8007                 return -ENODEV;
8008         }
8009
8010         frame = frame_base;
8011         nw64(ESPC_PIO_STAT, frame);
8012         limit = 64;
8013         do {
8014                 udelay(5);
8015                 frame = nr64(ESPC_PIO_STAT);
8016                 if (frame & ESPC_PIO_STAT_READ_END)
8017                         break;
8018         } while (limit--);
8019         if (!(frame & ESPC_PIO_STAT_READ_END)) {
8020                 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8021                         (unsigned long long) frame);
8022                 return -ENODEV;
8023         }
8024
8025         frame = nr64(ESPC_PIO_STAT);
8026         return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8027 }
8028
8029 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
8030 {
8031         int err = niu_pci_eeprom_read(np, off);
8032         u16 val;
8033
8034         if (err < 0)
8035                 return err;
8036         val = (err << 8);
8037         err = niu_pci_eeprom_read(np, off + 1);
8038         if (err < 0)
8039                 return err;
8040         val |= (err & 0xff);
8041
8042         return val;
8043 }
8044
8045 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8046 {
8047         int err = niu_pci_eeprom_read(np, off);
8048         u16 val;
8049
8050         if (err < 0)
8051                 return err;
8052
8053         val = (err & 0xff);
8054         err = niu_pci_eeprom_read(np, off + 1);
8055         if (err < 0)
8056                 return err;
8057
8058         val |= (err & 0xff) << 8;
8059
8060         return val;
8061 }
8062
8063 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
8064                                               u32 off,
8065                                               char *namebuf,
8066                                               int namebuf_len)
8067 {
8068         int i;
8069
8070         for (i = 0; i < namebuf_len; i++) {
8071                 int err = niu_pci_eeprom_read(np, off + i);
8072                 if (err < 0)
8073                         return err;
8074                 *namebuf++ = err;
8075                 if (!err)
8076                         break;
8077         }
8078         if (i >= namebuf_len)
8079                 return -EINVAL;
8080
8081         return i + 1;
8082 }
8083
8084 static void __devinit niu_vpd_parse_version(struct niu *np)
8085 {
8086         struct niu_vpd *vpd = &np->vpd;
8087         int len = strlen(vpd->version) + 1;
8088         const char *s = vpd->version;
8089         int i;
8090
8091         for (i = 0; i < len - 5; i++) {
8092                 if (!strncmp(s + i, "FCode ", 6))
8093                         break;
8094         }
8095         if (i >= len - 5)
8096                 return;
8097
8098         s += i + 5;
8099         sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8100
8101         netif_printk(np, probe, KERN_DEBUG, np->dev,
8102                      "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8103                      vpd->fcode_major, vpd->fcode_minor);
8104         if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8105             (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8106              vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8107                 np->flags |= NIU_FLAGS_VPD_VALID;
8108 }
8109
8110 /* ESPC_PIO_EN_ENABLE must be set */
8111 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
8112                                             u32 start, u32 end)
8113 {
8114         unsigned int found_mask = 0;
8115 #define FOUND_MASK_MODEL        0x00000001
8116 #define FOUND_MASK_BMODEL       0x00000002
8117 #define FOUND_MASK_VERS         0x00000004
8118 #define FOUND_MASK_MAC          0x00000008
8119 #define FOUND_MASK_NMAC         0x00000010
8120 #define FOUND_MASK_PHY          0x00000020
8121 #define FOUND_MASK_ALL          0x0000003f
8122
8123         netif_printk(np, probe, KERN_DEBUG, np->dev,
8124                      "VPD_SCAN: start[%x] end[%x]\n", start, end);
8125         while (start < end) {
8126                 int len, err, prop_len;
8127                 char namebuf[64];
8128                 u8 *prop_buf;
8129                 int max_len;
8130
8131                 if (found_mask == FOUND_MASK_ALL) {
8132                         niu_vpd_parse_version(np);
8133                         return 1;
8134                 }
8135
8136                 err = niu_pci_eeprom_read(np, start + 2);
8137                 if (err < 0)
8138                         return err;
8139                 len = err;
8140                 start += 3;
8141
8142                 prop_len = niu_pci_eeprom_read(np, start + 4);
8143                 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8144                 if (err < 0)
8145                         return err;
8146
8147                 prop_buf = NULL;
8148                 max_len = 0;
8149                 if (!strcmp(namebuf, "model")) {
8150                         prop_buf = np->vpd.model;
8151                         max_len = NIU_VPD_MODEL_MAX;
8152                         found_mask |= FOUND_MASK_MODEL;
8153                 } else if (!strcmp(namebuf, "board-model")) {
8154                         prop_buf = np->vpd.board_model;
8155                         max_len = NIU_VPD_BD_MODEL_MAX;
8156                         found_mask |= FOUND_MASK_BMODEL;
8157                 } else if (!strcmp(namebuf, "version")) {
8158                         prop_buf = np->vpd.version;
8159                         max_len = NIU_VPD_VERSION_MAX;
8160                         found_mask |= FOUND_MASK_VERS;
8161                 } else if (!strcmp(namebuf, "local-mac-address")) {
8162                         prop_buf = np->vpd.local_mac;
8163                         max_len = ETH_ALEN;
8164                         found_mask |= FOUND_MASK_MAC;
8165                 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8166                         prop_buf = &np->vpd.mac_num;
8167                         max_len = 1;
8168                         found_mask |= FOUND_MASK_NMAC;
8169                 } else if (!strcmp(namebuf, "phy-type")) {
8170                         prop_buf = np->vpd.phy_type;
8171                         max_len = NIU_VPD_PHY_TYPE_MAX;
8172                         found_mask |= FOUND_MASK_PHY;
8173                 }
8174
8175                 if (max_len && prop_len > max_len) {
8176                         dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8177                         return -EINVAL;
8178                 }
8179
8180                 if (prop_buf) {
8181                         u32 off = start + 5 + err;
8182                         int i;
8183
8184                         netif_printk(np, probe, KERN_DEBUG, np->dev,
8185                                      "VPD_SCAN: Reading in property [%s] len[%d]\n",
8186                                      namebuf, prop_len);
8187                         for (i = 0; i < prop_len; i++)
8188                                 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
8189                 }
8190
8191                 start += len;
8192         }
8193
8194         return 0;
8195 }
8196
8197 /* ESPC_PIO_EN_ENABLE must be set */
8198 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
8199 {
8200         u32 offset;
8201         int err;
8202
8203         err = niu_pci_eeprom_read16_swp(np, start + 1);
8204         if (err < 0)
8205                 return;
8206
8207         offset = err + 3;
8208
8209         while (start + offset < ESPC_EEPROM_SIZE) {
8210                 u32 here = start + offset;
8211                 u32 end;
8212
8213                 err = niu_pci_eeprom_read(np, here);
8214                 if (err != 0x90)
8215                         return;
8216
8217                 err = niu_pci_eeprom_read16_swp(np, here + 1);
8218                 if (err < 0)
8219                         return;
8220
8221                 here = start + offset + 3;
8222                 end = start + offset + err;
8223
8224                 offset += err;
8225
8226                 err = niu_pci_vpd_scan_props(np, here, end);
8227                 if (err < 0 || err == 1)
8228                         return;
8229         }
8230 }
8231
8232 /* ESPC_PIO_EN_ENABLE must be set */
8233 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
8234 {
8235         u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8236         int err;
8237
8238         while (start < end) {
8239                 ret = start;
8240
8241                 /* ROM header signature?  */
8242                 err = niu_pci_eeprom_read16(np, start +  0);
8243                 if (err != 0x55aa)
8244                         return 0;
8245
8246                 /* Apply offset to PCI data structure.  */
8247                 err = niu_pci_eeprom_read16(np, start + 23);
8248                 if (err < 0)
8249                         return 0;
8250                 start += err;
8251
8252                 /* Check for "PCIR" signature.  */
8253                 err = niu_pci_eeprom_read16(np, start +  0);
8254                 if (err != 0x5043)
8255                         return 0;
8256                 err = niu_pci_eeprom_read16(np, start +  2);
8257                 if (err != 0x4952)
8258                         return 0;
8259
8260                 /* Check for OBP image type.  */
8261                 err = niu_pci_eeprom_read(np, start + 20);
8262                 if (err < 0)
8263                         return 0;
8264                 if (err != 0x01) {
8265                         err = niu_pci_eeprom_read(np, ret + 2);
8266                         if (err < 0)
8267                                 return 0;
8268
8269                         start = ret + (err * 512);
8270                         continue;
8271                 }
8272
8273                 err = niu_pci_eeprom_read16_swp(np, start + 8);
8274                 if (err < 0)
8275                         return err;
8276                 ret += err;
8277
8278                 err = niu_pci_eeprom_read(np, ret + 0);
8279                 if (err != 0x82)
8280                         return 0;
8281
8282                 return ret;
8283         }
8284
8285         return 0;
8286 }
8287
8288 static int __devinit niu_phy_type_prop_decode(struct niu *np,
8289                                               const char *phy_prop)
8290 {
8291         if (!strcmp(phy_prop, "mif")) {
8292                 /* 1G copper, MII */
8293                 np->flags &= ~(NIU_FLAGS_FIBER |
8294                                NIU_FLAGS_10G);
8295                 np->mac_xcvr = MAC_XCVR_MII;
8296         } else if (!strcmp(phy_prop, "xgf")) {
8297                 /* 10G fiber, XPCS */
8298                 np->flags |= (NIU_FLAGS_10G |
8299                               NIU_FLAGS_FIBER);
8300                 np->mac_xcvr = MAC_XCVR_XPCS;
8301         } else if (!strcmp(phy_prop, "pcs")) {
8302                 /* 1G fiber, PCS */
8303                 np->flags &= ~NIU_FLAGS_10G;
8304                 np->flags |= NIU_FLAGS_FIBER;
8305                 np->mac_xcvr = MAC_XCVR_PCS;
8306         } else if (!strcmp(phy_prop, "xgc")) {
8307                 /* 10G copper, XPCS */
8308                 np->flags |= NIU_FLAGS_10G;
8309                 np->flags &= ~NIU_FLAGS_FIBER;
8310                 np->mac_xcvr = MAC_XCVR_XPCS;
8311         } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8312                 /* 10G Serdes or 1G Serdes, default to 10G */
8313                 np->flags |= NIU_FLAGS_10G;
8314                 np->flags &= ~NIU_FLAGS_FIBER;
8315                 np->flags |= NIU_FLAGS_XCVR_SERDES;
8316                 np->mac_xcvr = MAC_XCVR_XPCS;
8317         } else {
8318                 return -EINVAL;
8319         }
8320         return 0;
8321 }
8322
8323 static int niu_pci_vpd_get_nports(struct niu *np)
8324 {
8325         int ports = 0;
8326
8327         if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8328             (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8329             (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8330             (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8331             (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8332                 ports = 4;
8333         } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8334                    (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8335                    (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8336                    (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8337                 ports = 2;
8338         }
8339
8340         return ports;
8341 }
8342
8343 static void __devinit niu_pci_vpd_validate(struct niu *np)
8344 {
8345         struct net_device *dev = np->dev;
8346         struct niu_vpd *vpd = &np->vpd;
8347         u8 val8;
8348
8349         if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8350                 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8351
8352                 np->flags &= ~NIU_FLAGS_VPD_VALID;
8353                 return;
8354         }
8355
8356         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8357             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8358                 np->flags |= NIU_FLAGS_10G;
8359                 np->flags &= ~NIU_FLAGS_FIBER;
8360                 np->flags |= NIU_FLAGS_XCVR_SERDES;
8361                 np->mac_xcvr = MAC_XCVR_PCS;
8362                 if (np->port > 1) {
8363                         np->flags |= NIU_FLAGS_FIBER;
8364                         np->flags &= ~NIU_FLAGS_10G;
8365                 }
8366                 if (np->flags & NIU_FLAGS_10G)
8367                         np->mac_xcvr = MAC_XCVR_XPCS;
8368         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8369                 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8370                               NIU_FLAGS_HOTPLUG_PHY);
8371         } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8372                 dev_err(np->device, "Illegal phy string [%s]\n",
8373                         np->vpd.phy_type);
8374                 dev_err(np->device, "Falling back to SPROM\n");
8375                 np->flags &= ~NIU_FLAGS_VPD_VALID;
8376                 return;
8377         }
8378
8379         memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
8380
8381         val8 = dev->perm_addr[5];
8382         dev->perm_addr[5] += np->port;
8383         if (dev->perm_addr[5] < val8)
8384                 dev->perm_addr[4]++;
8385
8386         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8387 }
8388
8389 static int __devinit niu_pci_probe_sprom(struct niu *np)
8390 {
8391         struct net_device *dev = np->dev;
8392         int len, i;
8393         u64 val, sum;
8394         u8 val8;
8395
8396         val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8397         val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8398         len = val / 4;
8399
8400         np->eeprom_len = len;
8401
8402         netif_printk(np, probe, KERN_DEBUG, np->dev,
8403                      "SPROM: Image size %llu\n", (unsigned long long)val);
8404
8405         sum = 0;
8406         for (i = 0; i < len; i++) {
8407                 val = nr64(ESPC_NCR(i));
8408                 sum += (val >>  0) & 0xff;
8409                 sum += (val >>  8) & 0xff;
8410                 sum += (val >> 16) & 0xff;
8411                 sum += (val >> 24) & 0xff;
8412         }
8413         netif_printk(np, probe, KERN_DEBUG, np->dev,
8414                      "SPROM: Checksum %x\n", (int)(sum & 0xff));
8415         if ((sum & 0xff) != 0xab) {
8416                 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8417                 return -EINVAL;
8418         }
8419
8420         val = nr64(ESPC_PHY_TYPE);
8421         switch (np->port) {
8422         case 0:
8423                 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8424                         ESPC_PHY_TYPE_PORT0_SHIFT;
8425                 break;
8426         case 1:
8427                 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8428                         ESPC_PHY_TYPE_PORT1_SHIFT;
8429                 break;
8430         case 2:
8431                 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8432                         ESPC_PHY_TYPE_PORT2_SHIFT;
8433                 break;
8434         case 3:
8435                 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8436                         ESPC_PHY_TYPE_PORT3_SHIFT;
8437                 break;
8438         default:
8439                 dev_err(np->device, "Bogus port number %u\n",
8440                         np->port);
8441                 return -EINVAL;
8442         }
8443         netif_printk(np, probe, KERN_DEBUG, np->dev,
8444                      "SPROM: PHY type %x\n", val8);
8445
8446         switch (val8) {
8447         case ESPC_PHY_TYPE_1G_COPPER:
8448                 /* 1G copper, MII */
8449                 np->flags &= ~(NIU_FLAGS_FIBER |
8450                                NIU_FLAGS_10G);
8451                 np->mac_xcvr = MAC_XCVR_MII;
8452                 break;
8453
8454         case ESPC_PHY_TYPE_1G_FIBER:
8455                 /* 1G fiber, PCS */
8456                 np->flags &= ~NIU_FLAGS_10G;
8457                 np->flags |= NIU_FLAGS_FIBER;
8458                 np->mac_xcvr = MAC_XCVR_PCS;
8459                 break;
8460
8461         case ESPC_PHY_TYPE_10G_COPPER:
8462                 /* 10G copper, XPCS */
8463                 np->flags |= NIU_FLAGS_10G;
8464                 np->flags &= ~NIU_FLAGS_FIBER;
8465                 np->mac_xcvr = MAC_XCVR_XPCS;
8466                 break;
8467
8468         case ESPC_PHY_TYPE_10G_FIBER:
8469                 /* 10G fiber, XPCS */
8470                 np->flags |= (NIU_FLAGS_10G |
8471                               NIU_FLAGS_FIBER);
8472                 np->mac_xcvr = MAC_XCVR_XPCS;
8473                 break;
8474
8475         default:
8476                 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8477                 return -EINVAL;
8478         }
8479
8480         val = nr64(ESPC_MAC_ADDR0);
8481         netif_printk(np, probe, KERN_DEBUG, np->dev,
8482                      "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8483         dev->perm_addr[0] = (val >>  0) & 0xff;
8484         dev->perm_addr[1] = (val >>  8) & 0xff;
8485         dev->perm_addr[2] = (val >> 16) & 0xff;
8486         dev->perm_addr[3] = (val >> 24) & 0xff;
8487
8488         val = nr64(ESPC_MAC_ADDR1);
8489         netif_printk(np, probe, KERN_DEBUG, np->dev,
8490                      "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8491         dev->perm_addr[4] = (val >>  0) & 0xff;
8492         dev->perm_addr[5] = (val >>  8) & 0xff;
8493
8494         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8495                 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8496                         dev->perm_addr);
8497                 return -EINVAL;
8498         }
8499
8500         val8 = dev->perm_addr[5];
8501         dev->perm_addr[5] += np->port;
8502         if (dev->perm_addr[5] < val8)
8503                 dev->perm_addr[4]++;
8504
8505         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8506
8507         val = nr64(ESPC_MOD_STR_LEN);
8508         netif_printk(np, probe, KERN_DEBUG, np->dev,
8509                      "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8510         if (val >= 8 * 4)
8511                 return -EINVAL;
8512
8513         for (i = 0; i < val; i += 4) {
8514                 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8515
8516                 np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
8517                 np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
8518                 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8519                 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8520         }
8521         np->vpd.model[val] = '\0';
8522
8523         val = nr64(ESPC_BD_MOD_STR_LEN);
8524         netif_printk(np, probe, KERN_DEBUG, np->dev,
8525                      "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8526         if (val >= 4 * 4)
8527                 return -EINVAL;
8528
8529         for (i = 0; i < val; i += 4) {
8530                 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8531
8532                 np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
8533                 np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
8534                 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8535                 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8536         }
8537         np->vpd.board_model[val] = '\0';
8538
8539         np->vpd.mac_num =
8540                 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8541         netif_printk(np, probe, KERN_DEBUG, np->dev,
8542                      "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8543
8544         return 0;
8545 }
8546
8547 static int __devinit niu_get_and_validate_port(struct niu *np)
8548 {
8549         struct niu_parent *parent = np->parent;
8550
8551         if (np->port <= 1)
8552                 np->flags |= NIU_FLAGS_XMAC;
8553
8554         if (!parent->num_ports) {
8555                 if (parent->plat_type == PLAT_TYPE_NIU) {
8556                         parent->num_ports = 2;
8557                 } else {
8558                         parent->num_ports = niu_pci_vpd_get_nports(np);
8559                         if (!parent->num_ports) {
8560                                 /* Fall back to SPROM as last resort.
8561                                  * This will fail on most cards.
8562                                  */
8563                                 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8564                                         ESPC_NUM_PORTS_MACS_VAL;
8565
8566                                 /* All of the current probing methods fail on
8567                                  * Maramba on-board parts.
8568                                  */
8569                                 if (!parent->num_ports)
8570                                         parent->num_ports = 4;
8571                         }
8572                 }
8573         }
8574
8575         if (np->port >= parent->num_ports)
8576                 return -ENODEV;
8577
8578         return 0;
8579 }
8580
8581 static int __devinit phy_record(struct niu_parent *parent,
8582                                 struct phy_probe_info *p,
8583                                 int dev_id_1, int dev_id_2, u8 phy_port,
8584                                 int type)
8585 {
8586         u32 id = (dev_id_1 << 16) | dev_id_2;
8587         u8 idx;
8588
8589         if (dev_id_1 < 0 || dev_id_2 < 0)
8590                 return 0;
8591         if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8592                 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8593                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
8594                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
8595                         return 0;
8596         } else {
8597                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8598                         return 0;
8599         }
8600
8601         pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8602                 parent->index, id,
8603                 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8604                 type == PHY_TYPE_PCS ? "PCS" : "MII",
8605                 phy_port);
8606
8607         if (p->cur[type] >= NIU_MAX_PORTS) {
8608                 pr_err("Too many PHY ports\n");
8609                 return -EINVAL;
8610         }
8611         idx = p->cur[type];
8612         p->phy_id[type][idx] = id;
8613         p->phy_port[type][idx] = phy_port;
8614         p->cur[type] = idx + 1;
8615         return 0;
8616 }
8617
8618 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
8619 {
8620         int i;
8621
8622         for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8623                 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8624                         return 1;
8625         }
8626         for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8627                 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8628                         return 1;
8629         }
8630
8631         return 0;
8632 }
8633
8634 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
8635 {
8636         int port, cnt;
8637
8638         cnt = 0;
8639         *lowest = 32;
8640         for (port = 8; port < 32; port++) {
8641                 if (port_has_10g(p, port)) {
8642                         if (!cnt)
8643                                 *lowest = port;
8644                         cnt++;
8645                 }
8646         }
8647
8648         return cnt;
8649 }
8650
8651 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
8652 {
8653         *lowest = 32;
8654         if (p->cur[PHY_TYPE_MII])
8655                 *lowest = p->phy_port[PHY_TYPE_MII][0];
8656
8657         return p->cur[PHY_TYPE_MII];
8658 }
8659
8660 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
8661 {
8662         int num_ports = parent->num_ports;
8663         int i;
8664
8665         for (i = 0; i < num_ports; i++) {
8666                 parent->rxchan_per_port[i] = (16 / num_ports);
8667                 parent->txchan_per_port[i] = (16 / num_ports);
8668
8669                 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8670                         parent->index, i,
8671                         parent->rxchan_per_port[i],
8672                         parent->txchan_per_port[i]);
8673         }
8674 }
8675
8676 static void __devinit niu_divide_channels(struct niu_parent *parent,
8677                                           int num_10g, int num_1g)
8678 {
8679         int num_ports = parent->num_ports;
8680         int rx_chans_per_10g, rx_chans_per_1g;
8681         int tx_chans_per_10g, tx_chans_per_1g;
8682         int i, tot_rx, tot_tx;
8683
8684         if (!num_10g || !num_1g) {
8685                 rx_chans_per_10g = rx_chans_per_1g =
8686                         (NIU_NUM_RXCHAN / num_ports);
8687                 tx_chans_per_10g = tx_chans_per_1g =
8688                         (NIU_NUM_TXCHAN / num_ports);
8689         } else {
8690                 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8691                 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8692                                     (rx_chans_per_1g * num_1g)) /
8693                         num_10g;
8694
8695                 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8696                 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8697                                     (tx_chans_per_1g * num_1g)) /
8698                         num_10g;
8699         }
8700
8701         tot_rx = tot_tx = 0;
8702         for (i = 0; i < num_ports; i++) {
8703                 int type = phy_decode(parent->port_phy, i);
8704
8705                 if (type == PORT_TYPE_10G) {
8706                         parent->rxchan_per_port[i] = rx_chans_per_10g;
8707                         parent->txchan_per_port[i] = tx_chans_per_10g;
8708                 } else {
8709                         parent->rxchan_per_port[i] = rx_chans_per_1g;
8710                         parent->txchan_per_port[i] = tx_chans_per_1g;
8711                 }
8712                 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8713                         parent->index, i,
8714                         parent->rxchan_per_port[i],
8715                         parent->txchan_per_port[i]);
8716                 tot_rx += parent->rxchan_per_port[i];
8717                 tot_tx += parent->txchan_per_port[i];
8718         }
8719
8720         if (tot_rx > NIU_NUM_RXCHAN) {
8721                 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8722                        parent->index, tot_rx);
8723                 for (i = 0; i < num_ports; i++)
8724                         parent->rxchan_per_port[i] = 1;
8725         }
8726         if (tot_tx > NIU_NUM_TXCHAN) {
8727                 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8728                        parent->index, tot_tx);
8729                 for (i = 0; i < num_ports; i++)
8730                         parent->txchan_per_port[i] = 1;
8731         }
8732         if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8733                 pr_warning("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8734                            parent->index, tot_rx, tot_tx);
8735         }
8736 }
8737
8738 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
8739                                             int num_10g, int num_1g)
8740 {
8741         int i, num_ports = parent->num_ports;
8742         int rdc_group, rdc_groups_per_port;
8743         int rdc_channel_base;
8744
8745         rdc_group = 0;
8746         rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8747
8748         rdc_channel_base = 0;
8749
8750         for (i = 0; i < num_ports; i++) {
8751                 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8752                 int grp, num_channels = parent->rxchan_per_port[i];
8753                 int this_channel_offset;
8754
8755                 tp->first_table_num = rdc_group;
8756                 tp->num_tables = rdc_groups_per_port;
8757                 this_channel_offset = 0;
8758                 for (grp = 0; grp < tp->num_tables; grp++) {
8759                         struct rdc_table *rt = &tp->tables[grp];
8760                         int slot;
8761
8762                         pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8763                                 parent->index, i, tp->first_table_num + grp);
8764                         for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8765                                 rt->rxdma_channel[slot] =
8766                                         rdc_channel_base + this_channel_offset;
8767
8768                                 pr_cont("%d ", rt->rxdma_channel[slot]);
8769
8770                                 if (++this_channel_offset == num_channels)
8771                                         this_channel_offset = 0;
8772                         }
8773                         pr_cont("]\n");
8774                 }
8775
8776                 parent->rdc_default[i] = rdc_channel_base;
8777
8778                 rdc_channel_base += num_channels;
8779                 rdc_group += rdc_groups_per_port;
8780         }
8781 }
8782
8783 static int __devinit fill_phy_probe_info(struct niu *np,
8784                                          struct niu_parent *parent,
8785                                          struct phy_probe_info *info)
8786 {
8787         unsigned long flags;
8788         int port, err;
8789
8790         memset(info, 0, sizeof(*info));
8791
8792         /* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
8793         niu_lock_parent(np, flags);
8794         err = 0;
8795         for (port = 8; port < 32; port++) {
8796                 int dev_id_1, dev_id_2;
8797
8798                 dev_id_1 = mdio_read(np, port,
8799                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8800                 dev_id_2 = mdio_read(np, port,
8801                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8802                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8803                                  PHY_TYPE_PMA_PMD);
8804                 if (err)
8805                         break;
8806                 dev_id_1 = mdio_read(np, port,
8807                                      NIU_PCS_DEV_ADDR, MII_PHYSID1);
8808                 dev_id_2 = mdio_read(np, port,
8809                                      NIU_PCS_DEV_ADDR, MII_PHYSID2);
8810                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8811                                  PHY_TYPE_PCS);
8812                 if (err)
8813                         break;
8814                 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8815                 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8816                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8817                                  PHY_TYPE_MII);
8818                 if (err)
8819                         break;
8820         }
8821         niu_unlock_parent(np, flags);
8822
8823         return err;
8824 }
8825
8826 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8827 {
8828         struct phy_probe_info *info = &parent->phy_probe_info;
8829         int lowest_10g, lowest_1g;
8830         int num_10g, num_1g;
8831         u32 val;
8832         int err;
8833
8834         num_10g = num_1g = 0;
8835
8836         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8837             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8838                 num_10g = 0;
8839                 num_1g = 2;
8840                 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8841                 parent->num_ports = 4;
8842                 val = (phy_encode(PORT_TYPE_1G, 0) |
8843                        phy_encode(PORT_TYPE_1G, 1) |
8844                        phy_encode(PORT_TYPE_1G, 2) |
8845                        phy_encode(PORT_TYPE_1G, 3));
8846         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8847                 num_10g = 2;
8848                 num_1g = 0;
8849                 parent->num_ports = 2;
8850                 val = (phy_encode(PORT_TYPE_10G, 0) |
8851                        phy_encode(PORT_TYPE_10G, 1));
8852         } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8853                    (parent->plat_type == PLAT_TYPE_NIU)) {
8854                 /* this is the Monza case */
8855                 if (np->flags & NIU_FLAGS_10G) {
8856                         val = (phy_encode(PORT_TYPE_10G, 0) |
8857                                phy_encode(PORT_TYPE_10G, 1));
8858                 } else {
8859                         val = (phy_encode(PORT_TYPE_1G, 0) |
8860                                phy_encode(PORT_TYPE_1G, 1));
8861                 }
8862         } else {
8863                 err = fill_phy_probe_info(np, parent, info);
8864                 if (err)
8865                         return err;
8866
8867                 num_10g = count_10g_ports(info, &lowest_10g);
8868                 num_1g = count_1g_ports(info, &lowest_1g);
8869
8870                 switch ((num_10g << 4) | num_1g) {
8871                 case 0x24:
8872                         if (lowest_1g == 10)
8873                                 parent->plat_type = PLAT_TYPE_VF_P0;
8874                         else if (lowest_1g == 26)
8875                                 parent->plat_type = PLAT_TYPE_VF_P1;
8876                         else
8877                                 goto unknown_vg_1g_port;
8878
8879                         /* fallthru */
8880                 case 0x22:
8881                         val = (phy_encode(PORT_TYPE_10G, 0) |
8882                                phy_encode(PORT_TYPE_10G, 1) |
8883                                phy_encode(PORT_TYPE_1G, 2) |
8884                                phy_encode(PORT_TYPE_1G, 3));
8885                         break;
8886
8887                 case 0x20:
8888                         val = (phy_encode(PORT_TYPE_10G, 0) |
8889                                phy_encode(PORT_TYPE_10G, 1));
8890                         break;
8891
8892                 case 0x10:
8893                         val = phy_encode(PORT_TYPE_10G, np->port);
8894                         break;
8895
8896                 case 0x14:
8897                         if (lowest_1g == 10)
8898                                 parent->plat_type = PLAT_TYPE_VF_P0;
8899                         else if (lowest_1g == 26)
8900                                 parent->plat_type = PLAT_TYPE_VF_P1;
8901                         else
8902                                 goto unknown_vg_1g_port;
8903
8904                         /* fallthru */
8905                 case 0x13:
8906                         if ((lowest_10g & 0x7) == 0)
8907                                 val = (phy_encode(PORT_TYPE_10G, 0) |
8908                                        phy_encode(PORT_TYPE_1G, 1) |
8909                                        phy_encode(PORT_TYPE_1G, 2) |
8910                                        phy_encode(PORT_TYPE_1G, 3));
8911                         else
8912                                 val = (phy_encode(PORT_TYPE_1G, 0) |
8913                                        phy_encode(PORT_TYPE_10G, 1) |
8914                                        phy_encode(PORT_TYPE_1G, 2) |
8915                                        phy_encode(PORT_TYPE_1G, 3));
8916                         break;
8917
8918                 case 0x04:
8919                         if (lowest_1g == 10)
8920                                 parent->plat_type = PLAT_TYPE_VF_P0;
8921                         else if (lowest_1g == 26)
8922                                 parent->plat_type = PLAT_TYPE_VF_P1;
8923                         else
8924                                 goto unknown_vg_1g_port;
8925
8926                         val = (phy_encode(PORT_TYPE_1G, 0) |
8927                                phy_encode(PORT_TYPE_1G, 1) |
8928                                phy_encode(PORT_TYPE_1G, 2) |
8929                                phy_encode(PORT_TYPE_1G, 3));
8930                         break;
8931
8932                 default:
8933                         pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8934                                num_10g, num_1g);
8935                         return -EINVAL;
8936                 }
8937         }
8938
8939         parent->port_phy = val;
8940
8941         if (parent->plat_type == PLAT_TYPE_NIU)
8942                 niu_n2_divide_channels(parent);
8943         else
8944                 niu_divide_channels(parent, num_10g, num_1g);
8945
8946         niu_divide_rdc_groups(parent, num_10g, num_1g);
8947
8948         return 0;
8949
8950 unknown_vg_1g_port:
8951         pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8952         return -EINVAL;
8953 }
8954
8955 static int __devinit niu_probe_ports(struct niu *np)
8956 {
8957         struct niu_parent *parent = np->parent;
8958         int err, i;
8959
8960         if (parent->port_phy == PORT_PHY_UNKNOWN) {
8961                 err = walk_phys(np, parent);
8962                 if (err)
8963                         return err;
8964
8965                 niu_set_ldg_timer_res(np, 2);
8966                 for (i = 0; i <= LDN_MAX; i++)
8967                         niu_ldn_irq_enable(np, i, 0);
8968         }
8969
8970         if (parent->port_phy == PORT_PHY_INVALID)
8971                 return -EINVAL;
8972
8973         return 0;
8974 }
8975
8976 static int __devinit niu_classifier_swstate_init(struct niu *np)
8977 {
8978         struct niu_classifier *cp = &np->clas;
8979
8980         cp->tcam_top = (u16) np->port;
8981         cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8982         cp->h1_init = 0xffffffff;
8983         cp->h2_init = 0xffff;
8984
8985         return fflp_early_init(np);
8986 }
8987
8988 static void __devinit niu_link_config_init(struct niu *np)
8989 {
8990         struct niu_link_config *lp = &np->link_config;
8991
8992         lp->advertising = (ADVERTISED_10baseT_Half |
8993                            ADVERTISED_10baseT_Full |
8994                            ADVERTISED_100baseT_Half |
8995                            ADVERTISED_100baseT_Full |
8996                            ADVERTISED_1000baseT_Half |
8997                            ADVERTISED_1000baseT_Full |
8998                            ADVERTISED_10000baseT_Full |
8999                            ADVERTISED_Autoneg);
9000         lp->speed = lp->active_speed = SPEED_INVALID;
9001         lp->duplex = DUPLEX_FULL;
9002         lp->active_duplex = DUPLEX_INVALID;
9003         lp->autoneg = 1;
9004 #if 0
9005         lp->loopback_mode = LOOPBACK_MAC;
9006         lp->active_speed = SPEED_10000;
9007         lp->active_duplex = DUPLEX_FULL;
9008 #else
9009         lp->loopback_mode = LOOPBACK_DISABLED;
9010 #endif
9011 }
9012
9013 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
9014 {
9015         switch (np->port) {
9016         case 0:
9017                 np->mac_regs = np->regs + XMAC_PORT0_OFF;
9018                 np->ipp_off  = 0x00000;
9019                 np->pcs_off  = 0x04000;
9020                 np->xpcs_off = 0x02000;
9021                 break;
9022
9023         case 1:
9024                 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9025                 np->ipp_off  = 0x08000;
9026                 np->pcs_off  = 0x0a000;
9027                 np->xpcs_off = 0x08000;
9028                 break;
9029
9030         case 2:
9031                 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9032                 np->ipp_off  = 0x04000;
9033                 np->pcs_off  = 0x0e000;
9034                 np->xpcs_off = ~0UL;
9035                 break;
9036
9037         case 3:
9038                 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9039                 np->ipp_off  = 0x0c000;
9040                 np->pcs_off  = 0x12000;
9041                 np->xpcs_off = ~0UL;
9042                 break;
9043
9044         default:
9045                 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9046                 return -EINVAL;
9047         }
9048
9049         return 0;
9050 }
9051
9052 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
9053 {
9054         struct msix_entry msi_vec[NIU_NUM_LDG];
9055         struct niu_parent *parent = np->parent;
9056         struct pci_dev *pdev = np->pdev;
9057         int i, num_irqs, err;
9058         u8 first_ldg;
9059
9060         first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9061         for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9062                 ldg_num_map[i] = first_ldg + i;
9063
9064         num_irqs = (parent->rxchan_per_port[np->port] +
9065                     parent->txchan_per_port[np->port] +
9066                     (np->port == 0 ? 3 : 1));
9067         BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9068
9069 retry:
9070         for (i = 0; i < num_irqs; i++) {
9071                 msi_vec[i].vector = 0;
9072                 msi_vec[i].entry = i;
9073         }
9074
9075         err = pci_enable_msix(pdev, msi_vec, num_irqs);
9076         if (err < 0) {
9077                 np->flags &= ~NIU_FLAGS_MSIX;
9078                 return;
9079         }
9080         if (err > 0) {
9081                 num_irqs = err;
9082                 goto retry;
9083         }
9084
9085         np->flags |= NIU_FLAGS_MSIX;
9086         for (i = 0; i < num_irqs; i++)
9087                 np->ldg[i].irq = msi_vec[i].vector;
9088         np->num_ldg = num_irqs;
9089 }
9090
9091 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9092 {
9093 #ifdef CONFIG_SPARC64
9094         struct platform_device *op = np->op;
9095         const u32 *int_prop;
9096         int i;
9097
9098         int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9099         if (!int_prop)
9100                 return -ENODEV;
9101
9102         for (i = 0; i < op->archdata.num_irqs; i++) {
9103                 ldg_num_map[i] = int_prop[i];
9104                 np->ldg[i].irq = op->archdata.irqs[i];
9105         }
9106
9107         np->num_ldg = op->archdata.num_irqs;
9108
9109         return 0;
9110 #else
9111         return -EINVAL;
9112 #endif
9113 }
9114
9115 static int __devinit niu_ldg_init(struct niu *np)
9116 {
9117         struct niu_parent *parent = np->parent;
9118         u8 ldg_num_map[NIU_NUM_LDG];
9119         int first_chan, num_chan;
9120         int i, err, ldg_rotor;
9121         u8 port;
9122
9123         np->num_ldg = 1;
9124         np->ldg[0].irq = np->dev->irq;
9125         if (parent->plat_type == PLAT_TYPE_NIU) {
9126                 err = niu_n2_irq_init(np, ldg_num_map);
9127                 if (err)
9128                         return err;
9129         } else
9130                 niu_try_msix(np, ldg_num_map);
9131
9132         port = np->port;
9133         for (i = 0; i < np->num_ldg; i++) {
9134                 struct niu_ldg *lp = &np->ldg[i];
9135
9136                 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9137
9138                 lp->np = np;
9139                 lp->ldg_num = ldg_num_map[i];
9140                 lp->timer = 2; /* XXX */
9141
9142                 /* On N2 NIU the firmware has setup the SID mappings so they go
9143                  * to the correct values that will route the LDG to the proper
9144                  * interrupt in the NCU interrupt table.
9145                  */
9146                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9147                         err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9148                         if (err)
9149                                 return err;
9150                 }
9151         }
9152
9153         /* We adopt the LDG assignment ordering used by the N2 NIU
9154          * 'interrupt' properties because that simplifies a lot of
9155          * things.  This ordering is:
9156          *
9157          *      MAC
9158          *      MIF     (if port zero)
9159          *      SYSERR  (if port zero)
9160          *      RX channels
9161          *      TX channels
9162          */
9163
9164         ldg_rotor = 0;
9165
9166         err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9167                                   LDN_MAC(port));
9168         if (err)
9169                 return err;
9170
9171         ldg_rotor++;
9172         if (ldg_rotor == np->num_ldg)
9173                 ldg_rotor = 0;
9174
9175         if (port == 0) {
9176                 err = niu_ldg_assign_ldn(np, parent,
9177                                          ldg_num_map[ldg_rotor],
9178                                          LDN_MIF);
9179                 if (err)
9180                         return err;
9181
9182                 ldg_rotor++;
9183                 if (ldg_rotor == np->num_ldg)
9184                         ldg_rotor = 0;
9185
9186                 err = niu_ldg_assign_ldn(np, parent,
9187                                          ldg_num_map[ldg_rotor],
9188                                          LDN_DEVICE_ERROR);
9189                 if (err)
9190                         return err;
9191
9192                 ldg_rotor++;
9193                 if (ldg_rotor == np->num_ldg)
9194                         ldg_rotor = 0;
9195
9196         }
9197
9198         first_chan = 0;
9199         for (i = 0; i < port; i++)
9200                 first_chan += parent->rxchan_per_port[port];
9201         num_chan = parent->rxchan_per_port[port];
9202
9203         for (i = first_chan; i < (first_chan + num_chan); i++) {
9204                 err = niu_ldg_assign_ldn(np, parent,
9205                                          ldg_num_map[ldg_rotor],
9206                                          LDN_RXDMA(i));
9207                 if (err)
9208                         return err;
9209                 ldg_rotor++;
9210                 if (ldg_rotor == np->num_ldg)
9211                         ldg_rotor = 0;
9212         }
9213
9214         first_chan = 0;
9215         for (i = 0; i < port; i++)
9216                 first_chan += parent->txchan_per_port[port];
9217         num_chan = parent->txchan_per_port[port];
9218         for (i = first_chan; i < (first_chan + num_chan); i++) {
9219                 err = niu_ldg_assign_ldn(np, parent,
9220                                          ldg_num_map[ldg_rotor],
9221                                          LDN_TXDMA(i));
9222                 if (err)
9223                         return err;
9224                 ldg_rotor++;
9225                 if (ldg_rotor == np->num_ldg)
9226                         ldg_rotor = 0;
9227         }
9228
9229         return 0;
9230 }
9231
9232 static void __devexit niu_ldg_free(struct niu *np)
9233 {
9234         if (np->flags & NIU_FLAGS_MSIX)
9235                 pci_disable_msix(np->pdev);
9236 }
9237
9238 static int __devinit niu_get_of_props(struct niu *np)
9239 {
9240 #ifdef CONFIG_SPARC64
9241         struct net_device *dev = np->dev;
9242         struct device_node *dp;
9243         const char *phy_type;
9244         const u8 *mac_addr;
9245         const char *model;
9246         int prop_len;
9247
9248         if (np->parent->plat_type == PLAT_TYPE_NIU)
9249                 dp = np->op->dev.of_node;
9250         else
9251                 dp = pci_device_to_OF_node(np->pdev);
9252
9253         phy_type = of_get_property(dp, "phy-type", &prop_len);
9254         if (!phy_type) {
9255                 netdev_err(dev, "%s: OF node lacks phy-type property\n",
9256                            dp->full_name);
9257                 return -EINVAL;
9258         }
9259
9260         if (!strcmp(phy_type, "none"))
9261                 return -ENODEV;
9262
9263         strcpy(np->vpd.phy_type, phy_type);
9264
9265         if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9266                 netdev_err(dev, "%s: Illegal phy string [%s]\n",
9267                            dp->full_name, np->vpd.phy_type);
9268                 return -EINVAL;
9269         }
9270
9271         mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9272         if (!mac_addr) {
9273                 netdev_err(dev, "%s: OF node lacks local-mac-address property\n",
9274                            dp->full_name);
9275                 return -EINVAL;
9276         }
9277         if (prop_len != dev->addr_len) {
9278                 netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n",
9279                            dp->full_name, prop_len);
9280         }
9281         memcpy(dev->perm_addr, mac_addr, dev->addr_len);
9282         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
9283                 netdev_err(dev, "%s: OF MAC address is invalid\n",
9284                            dp->full_name);
9285                 netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->perm_addr);
9286                 return -EINVAL;
9287         }
9288
9289         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
9290
9291         model = of_get_property(dp, "model", &prop_len);
9292
9293         if (model)
9294                 strcpy(np->vpd.model, model);
9295
9296         if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9297                 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9298                         NIU_FLAGS_HOTPLUG_PHY);
9299         }
9300
9301         return 0;
9302 #else
9303         return -EINVAL;
9304 #endif
9305 }
9306
9307 static int __devinit niu_get_invariants(struct niu *np)
9308 {
9309         int err, have_props;
9310         u32 offset;
9311
9312         err = niu_get_of_props(np);
9313         if (err == -ENODEV)
9314                 return err;
9315
9316         have_props = !err;
9317
9318         err = niu_init_mac_ipp_pcs_base(np);
9319         if (err)
9320                 return err;
9321
9322         if (have_props) {
9323                 err = niu_get_and_validate_port(np);
9324                 if (err)
9325                         return err;
9326
9327         } else  {
9328                 if (np->parent->plat_type == PLAT_TYPE_NIU)
9329                         return -EINVAL;
9330
9331                 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9332                 offset = niu_pci_vpd_offset(np);
9333                 netif_printk(np, probe, KERN_DEBUG, np->dev,
9334                              "%s() VPD offset [%08x]\n", __func__, offset);
9335                 if (offset)
9336                         niu_pci_vpd_fetch(np, offset);
9337                 nw64(ESPC_PIO_EN, 0);
9338
9339                 if (np->flags & NIU_FLAGS_VPD_VALID) {
9340                         niu_pci_vpd_validate(np);
9341                         err = niu_get_and_validate_port(np);
9342                         if (err)
9343                                 return err;
9344                 }
9345
9346                 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9347                         err = niu_get_and_validate_port(np);
9348                         if (err)
9349                                 return err;
9350                         err = niu_pci_probe_sprom(np);
9351                         if (err)
9352                                 return err;
9353                 }
9354         }
9355
9356         err = niu_probe_ports(np);
9357         if (err)
9358                 return err;
9359
9360         niu_ldg_init(np);
9361
9362         niu_classifier_swstate_init(np);
9363         niu_link_config_init(np);
9364
9365         err = niu_determine_phy_disposition(np);
9366         if (!err)
9367                 err = niu_init_link(np);
9368
9369         return err;
9370 }
9371
9372 static LIST_HEAD(niu_parent_list);
9373 static DEFINE_MUTEX(niu_parent_lock);
9374 static int niu_parent_index;
9375
9376 static ssize_t show_port_phy(struct device *dev,
9377                              struct device_attribute *attr, char *buf)
9378 {
9379         struct platform_device *plat_dev = to_platform_device(dev);
9380         struct niu_parent *p = plat_dev->dev.platform_data;
9381         u32 port_phy = p->port_phy;
9382         char *orig_buf = buf;
9383         int i;
9384
9385         if (port_phy == PORT_PHY_UNKNOWN ||
9386             port_phy == PORT_PHY_INVALID)
9387                 return 0;
9388
9389         for (i = 0; i < p->num_ports; i++) {
9390                 const char *type_str;
9391                 int type;
9392
9393                 type = phy_decode(port_phy, i);
9394                 if (type == PORT_TYPE_10G)
9395                         type_str = "10G";
9396                 else
9397                         type_str = "1G";
9398                 buf += sprintf(buf,
9399                                (i == 0) ? "%s" : " %s",
9400                                type_str);
9401         }
9402         buf += sprintf(buf, "\n");
9403         return buf - orig_buf;
9404 }
9405
9406 static ssize_t show_plat_type(struct device *dev,
9407                               struct device_attribute *attr, char *buf)
9408 {
9409         struct platform_device *plat_dev = to_platform_device(dev);
9410         struct niu_parent *p = plat_dev->dev.platform_data;
9411         const char *type_str;
9412
9413         switch (p->plat_type) {
9414         case PLAT_TYPE_ATLAS:
9415                 type_str = "atlas";
9416                 break;
9417         case PLAT_TYPE_NIU:
9418                 type_str = "niu";
9419                 break;
9420         case PLAT_TYPE_VF_P0:
9421                 type_str = "vf_p0";
9422                 break;
9423         case PLAT_TYPE_VF_P1:
9424                 type_str = "vf_p1";
9425                 break;
9426         default:
9427                 type_str = "unknown";
9428                 break;
9429         }
9430
9431         return sprintf(buf, "%s\n", type_str);
9432 }
9433
9434 static ssize_t __show_chan_per_port(struct device *dev,
9435                                     struct device_attribute *attr, char *buf,
9436                                     int rx)
9437 {
9438         struct platform_device *plat_dev = to_platform_device(dev);
9439         struct niu_parent *p = plat_dev->dev.platform_data;
9440         char *orig_buf = buf;
9441         u8 *arr;
9442         int i;
9443
9444         arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9445
9446         for (i = 0; i < p->num_ports; i++) {
9447                 buf += sprintf(buf,
9448                                (i == 0) ? "%d" : " %d",
9449                                arr[i]);
9450         }
9451         buf += sprintf(buf, "\n");
9452
9453         return buf - orig_buf;
9454 }
9455
9456 static ssize_t show_rxchan_per_port(struct device *dev,
9457                                     struct device_attribute *attr, char *buf)
9458 {
9459         return __show_chan_per_port(dev, attr, buf, 1);
9460 }
9461
9462 static ssize_t show_txchan_per_port(struct device *dev,
9463                                     struct device_attribute *attr, char *buf)
9464 {
9465         return __show_chan_per_port(dev, attr, buf, 1);
9466 }
9467
9468 static ssize_t show_num_ports(struct device *dev,
9469                               struct device_attribute *attr, char *buf)
9470 {
9471         struct platform_device *plat_dev = to_platform_device(dev);
9472         struct niu_parent *p = plat_dev->dev.platform_data;
9473
9474         return sprintf(buf, "%d\n", p->num_ports);
9475 }
9476
9477 static struct device_attribute niu_parent_attributes[] = {
9478         __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
9479         __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
9480         __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
9481         __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
9482         __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
9483         {}
9484 };
9485
9486 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
9487                                                     union niu_parent_id *id,
9488                                                     u8 ptype)
9489 {
9490         struct platform_device *plat_dev;
9491         struct niu_parent *p;
9492         int i;
9493
9494         plat_dev = platform_device_register_simple("niu-board", niu_parent_index,
9495                                                    NULL, 0);
9496         if (IS_ERR(plat_dev))
9497                 return NULL;
9498
9499         for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
9500                 int err = device_create_file(&plat_dev->dev,
9501                                              &niu_parent_attributes[i]);
9502                 if (err)
9503                         goto fail_unregister;
9504         }
9505
9506         p = kzalloc(sizeof(*p), GFP_KERNEL);
9507         if (!p)
9508                 goto fail_unregister;
9509
9510         p->index = niu_parent_index++;
9511
9512         plat_dev->dev.platform_data = p;
9513         p->plat_dev = plat_dev;
9514
9515         memcpy(&p->id, id, sizeof(*id));
9516         p->plat_type = ptype;
9517         INIT_LIST_HEAD(&p->list);
9518         atomic_set(&p->refcnt, 0);
9519         list_add(&p->list, &niu_parent_list);
9520         spin_lock_init(&p->lock);
9521
9522         p->rxdma_clock_divider = 7500;
9523
9524         p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9525         if (p->plat_type == PLAT_TYPE_NIU)
9526                 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9527
9528         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9529                 int index = i - CLASS_CODE_USER_PROG1;
9530
9531                 p->tcam_key[index] = TCAM_KEY_TSEL;
9532                 p->flow_key[index] = (FLOW_KEY_IPSA |
9533                                       FLOW_KEY_IPDA |
9534                                       FLOW_KEY_PROTO |
9535                                       (FLOW_KEY_L4_BYTE12 <<
9536                                        FLOW_KEY_L4_0_SHIFT) |
9537                                       (FLOW_KEY_L4_BYTE12 <<
9538                                        FLOW_KEY_L4_1_SHIFT));
9539         }
9540
9541         for (i = 0; i < LDN_MAX + 1; i++)
9542                 p->ldg_map[i] = LDG_INVALID;
9543
9544         return p;
9545
9546 fail_unregister:
9547         platform_device_unregister(plat_dev);
9548         return NULL;
9549 }
9550
9551 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
9552                                                     union niu_parent_id *id,
9553                                                     u8 ptype)
9554 {
9555         struct niu_parent *p, *tmp;
9556         int port = np->port;
9557
9558         mutex_lock(&niu_parent_lock);
9559         p = NULL;
9560         list_for_each_entry(tmp, &niu_parent_list, list) {
9561                 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9562                         p = tmp;
9563                         break;
9564                 }
9565         }
9566         if (!p)
9567                 p = niu_new_parent(np, id, ptype);
9568
9569         if (p) {
9570                 char port_name[6];
9571                 int err;
9572
9573                 sprintf(port_name, "port%d", port);
9574                 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9575                                         &np->device->kobj,
9576                                         port_name);
9577                 if (!err) {
9578                         p->ports[port] = np;
9579                         atomic_inc(&p->refcnt);
9580                 }
9581         }
9582         mutex_unlock(&niu_parent_lock);
9583
9584         return p;
9585 }
9586
9587 static void niu_put_parent(struct niu *np)
9588 {
9589         struct niu_parent *p = np->parent;
9590         u8 port = np->port;
9591         char port_name[6];
9592
9593         BUG_ON(!p || p->ports[port] != np);
9594
9595         netif_printk(np, probe, KERN_DEBUG, np->dev,
9596                      "%s() port[%u]\n", __func__, port);
9597
9598         sprintf(port_name, "port%d", port);
9599
9600         mutex_lock(&niu_parent_lock);
9601
9602         sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9603
9604         p->ports[port] = NULL;
9605         np->parent = NULL;
9606
9607         if (atomic_dec_and_test(&p->refcnt)) {
9608                 list_del(&p->list);
9609                 platform_device_unregister(p->plat_dev);
9610         }
9611
9612         mutex_unlock(&niu_parent_lock);
9613 }
9614
9615 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9616                                     u64 *handle, gfp_t flag)
9617 {
9618         dma_addr_t dh;
9619         void *ret;
9620
9621         ret = dma_alloc_coherent(dev, size, &dh, flag);
9622         if (ret)
9623                 *handle = dh;
9624         return ret;
9625 }
9626
9627 static void niu_pci_free_coherent(struct device *dev, size_t size,
9628                                   void *cpu_addr, u64 handle)
9629 {
9630         dma_free_coherent(dev, size, cpu_addr, handle);
9631 }
9632
9633 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9634                             unsigned long offset, size_t size,
9635                             enum dma_data_direction direction)
9636 {
9637         return dma_map_page(dev, page, offset, size, direction);
9638 }
9639
9640 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9641                                size_t size, enum dma_data_direction direction)
9642 {
9643         dma_unmap_page(dev, dma_address, size, direction);
9644 }
9645
9646 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9647                               size_t size,
9648                               enum dma_data_direction direction)
9649 {
9650         return dma_map_single(dev, cpu_addr, size, direction);
9651 }
9652
9653 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9654                                  size_t size,
9655                                  enum dma_data_direction direction)
9656 {
9657         dma_unmap_single(dev, dma_address, size, direction);
9658 }
9659
9660 static const struct niu_ops niu_pci_ops = {
9661         .alloc_coherent = niu_pci_alloc_coherent,
9662         .free_coherent  = niu_pci_free_coherent,
9663         .map_page       = niu_pci_map_page,
9664         .unmap_page     = niu_pci_unmap_page,
9665         .map_single     = niu_pci_map_single,
9666         .unmap_single   = niu_pci_unmap_single,
9667 };
9668
9669 static void __devinit niu_driver_version(void)
9670 {
9671         static int niu_version_printed;
9672
9673         if (niu_version_printed++ == 0)
9674                 pr_info("%s", version);
9675 }
9676
9677 static struct net_device * __devinit niu_alloc_and_init(
9678         struct device *gen_dev, struct pci_dev *pdev,
9679         struct platform_device *op, const struct niu_ops *ops,
9680         u8 port)
9681 {
9682         struct net_device *dev;
9683         struct niu *np;
9684
9685         dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9686         if (!dev) {
9687                 dev_err(gen_dev, "Etherdev alloc failed, aborting\n");
9688                 return NULL;
9689         }
9690
9691         SET_NETDEV_DEV(dev, gen_dev);
9692
9693         np = netdev_priv(dev);
9694         np->dev = dev;
9695         np->pdev = pdev;
9696         np->op = op;
9697         np->device = gen_dev;
9698         np->ops = ops;
9699
9700         np->msg_enable = niu_debug;
9701
9702         spin_lock_init(&np->lock);
9703         INIT_WORK(&np->reset_task, niu_reset_task);
9704
9705         np->port = port;
9706
9707         return dev;
9708 }
9709
9710 static const struct net_device_ops niu_netdev_ops = {
9711         .ndo_open               = niu_open,
9712         .ndo_stop               = niu_close,
9713         .ndo_start_xmit         = niu_start_xmit,
9714         .ndo_get_stats          = niu_get_stats,
9715         .ndo_set_multicast_list = niu_set_rx_mode,
9716         .ndo_validate_addr      = eth_validate_addr,
9717         .ndo_set_mac_address    = niu_set_mac_addr,
9718         .ndo_do_ioctl           = niu_ioctl,
9719         .ndo_tx_timeout         = niu_tx_timeout,
9720         .ndo_change_mtu         = niu_change_mtu,
9721 };
9722
9723 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
9724 {
9725         dev->netdev_ops = &niu_netdev_ops;
9726         dev->ethtool_ops = &niu_ethtool_ops;
9727         dev->watchdog_timeo = NIU_TX_TIMEOUT;
9728 }
9729
9730 static void __devinit niu_device_announce(struct niu *np)
9731 {
9732         struct net_device *dev = np->dev;
9733
9734         pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9735
9736         if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9737                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9738                                 dev->name,
9739                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9740                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9741                                 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9742                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9743                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9744                                 np->vpd.phy_type);
9745         } else {
9746                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9747                                 dev->name,
9748                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9749                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9750                                 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9751                                  (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9752                                   "COPPER")),
9753                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9754                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9755                                 np->vpd.phy_type);
9756         }
9757 }
9758
9759 static void __devinit niu_set_basic_features(struct net_device *dev)
9760 {
9761         dev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXHASH;
9762         dev->features |= dev->hw_features | NETIF_F_RXCSUM;
9763 }
9764
9765 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9766                                       const struct pci_device_id *ent)
9767 {
9768         union niu_parent_id parent_id;
9769         struct net_device *dev;
9770         struct niu *np;
9771         int err, pos;
9772         u64 dma_mask;
9773         u16 val16;
9774
9775         niu_driver_version();
9776
9777         err = pci_enable_device(pdev);
9778         if (err) {
9779                 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9780                 return err;
9781         }
9782
9783         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9784             !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9785                 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9786                 err = -ENODEV;
9787                 goto err_out_disable_pdev;
9788         }
9789
9790         err = pci_request_regions(pdev, DRV_MODULE_NAME);
9791         if (err) {
9792                 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9793                 goto err_out_disable_pdev;
9794         }
9795
9796         pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
9797         if (pos <= 0) {
9798                 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9799                 goto err_out_free_res;
9800         }
9801
9802         dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9803                                  &niu_pci_ops, PCI_FUNC(pdev->devfn));
9804         if (!dev) {
9805                 err = -ENOMEM;
9806                 goto err_out_free_res;
9807         }
9808         np = netdev_priv(dev);
9809
9810         memset(&parent_id, 0, sizeof(parent_id));
9811         parent_id.pci.domain = pci_domain_nr(pdev->bus);
9812         parent_id.pci.bus = pdev->bus->number;
9813         parent_id.pci.device = PCI_SLOT(pdev->devfn);
9814
9815         np->parent = niu_get_parent(np, &parent_id,
9816                                     PLAT_TYPE_ATLAS);
9817         if (!np->parent) {
9818                 err = -ENOMEM;
9819                 goto err_out_free_dev;
9820         }
9821
9822         pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9823         val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9824         val16 |= (PCI_EXP_DEVCTL_CERE |
9825                   PCI_EXP_DEVCTL_NFERE |
9826                   PCI_EXP_DEVCTL_FERE |
9827                   PCI_EXP_DEVCTL_URRE |
9828                   PCI_EXP_DEVCTL_RELAX_EN);
9829         pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9830
9831         dma_mask = DMA_BIT_MASK(44);
9832         err = pci_set_dma_mask(pdev, dma_mask);
9833         if (!err) {
9834                 dev->features |= NETIF_F_HIGHDMA;
9835                 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9836                 if (err) {
9837                         dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9838                         goto err_out_release_parent;
9839                 }
9840         }
9841         if (err || dma_mask == DMA_BIT_MASK(32)) {
9842                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9843                 if (err) {
9844                         dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9845                         goto err_out_release_parent;
9846                 }
9847         }
9848
9849         niu_set_basic_features(dev);
9850
9851         np->regs = pci_ioremap_bar(pdev, 0);
9852         if (!np->regs) {
9853                 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9854                 err = -ENOMEM;
9855                 goto err_out_release_parent;
9856         }
9857
9858         pci_set_master(pdev);
9859         pci_save_state(pdev);
9860
9861         dev->irq = pdev->irq;
9862
9863         niu_assign_netdev_ops(dev);
9864
9865         err = niu_get_invariants(np);
9866         if (err) {
9867                 if (err != -ENODEV)
9868                         dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9869                 goto err_out_iounmap;
9870         }
9871
9872         err = register_netdev(dev);
9873         if (err) {
9874                 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9875                 goto err_out_iounmap;
9876         }
9877
9878         pci_set_drvdata(pdev, dev);
9879
9880         niu_device_announce(np);
9881
9882         return 0;
9883
9884 err_out_iounmap:
9885         if (np->regs) {
9886                 iounmap(np->regs);
9887                 np->regs = NULL;
9888         }
9889
9890 err_out_release_parent:
9891         niu_put_parent(np);
9892
9893 err_out_free_dev:
9894         free_netdev(dev);
9895
9896 err_out_free_res:
9897         pci_release_regions(pdev);
9898
9899 err_out_disable_pdev:
9900         pci_disable_device(pdev);
9901         pci_set_drvdata(pdev, NULL);
9902
9903         return err;
9904 }
9905
9906 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9907 {
9908         struct net_device *dev = pci_get_drvdata(pdev);
9909
9910         if (dev) {
9911                 struct niu *np = netdev_priv(dev);
9912
9913                 unregister_netdev(dev);
9914                 if (np->regs) {
9915                         iounmap(np->regs);
9916                         np->regs = NULL;
9917                 }
9918
9919                 niu_ldg_free(np);
9920
9921                 niu_put_parent(np);
9922
9923                 free_netdev(dev);
9924                 pci_release_regions(pdev);
9925                 pci_disable_device(pdev);
9926                 pci_set_drvdata(pdev, NULL);
9927         }
9928 }
9929
9930 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9931 {
9932         struct net_device *dev = pci_get_drvdata(pdev);
9933         struct niu *np = netdev_priv(dev);
9934         unsigned long flags;
9935
9936         if (!netif_running(dev))
9937                 return 0;
9938
9939         flush_work_sync(&np->reset_task);
9940         niu_netif_stop(np);
9941
9942         del_timer_sync(&np->timer);
9943
9944         spin_lock_irqsave(&np->lock, flags);
9945         niu_enable_interrupts(np, 0);
9946         spin_unlock_irqrestore(&np->lock, flags);
9947
9948         netif_device_detach(dev);
9949
9950         spin_lock_irqsave(&np->lock, flags);
9951         niu_stop_hw(np);
9952         spin_unlock_irqrestore(&np->lock, flags);
9953
9954         pci_save_state(pdev);
9955
9956         return 0;
9957 }
9958
9959 static int niu_resume(struct pci_dev *pdev)
9960 {
9961         struct net_device *dev = pci_get_drvdata(pdev);
9962         struct niu *np = netdev_priv(dev);
9963         unsigned long flags;
9964         int err;
9965
9966         if (!netif_running(dev))
9967                 return 0;
9968
9969         pci_restore_state(pdev);
9970
9971         netif_device_attach(dev);
9972
9973         spin_lock_irqsave(&np->lock, flags);
9974
9975         err = niu_init_hw(np);
9976         if (!err) {
9977                 np->timer.expires = jiffies + HZ;
9978                 add_timer(&np->timer);
9979                 niu_netif_start(np);
9980         }
9981
9982         spin_unlock_irqrestore(&np->lock, flags);
9983
9984         return err;
9985 }
9986
9987 static struct pci_driver niu_pci_driver = {
9988         .name           = DRV_MODULE_NAME,
9989         .id_table       = niu_pci_tbl,
9990         .probe          = niu_pci_init_one,
9991         .remove         = __devexit_p(niu_pci_remove_one),
9992         .suspend        = niu_suspend,
9993         .resume         = niu_resume,
9994 };
9995
9996 #ifdef CONFIG_SPARC64
9997 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9998                                      u64 *dma_addr, gfp_t flag)
9999 {
10000         unsigned long order = get_order(size);
10001         unsigned long page = __get_free_pages(flag, order);
10002
10003         if (page == 0UL)
10004                 return NULL;
10005         memset((char *)page, 0, PAGE_SIZE << order);
10006         *dma_addr = __pa(page);
10007
10008         return (void *) page;
10009 }
10010
10011 static void niu_phys_free_coherent(struct device *dev, size_t size,
10012                                    void *cpu_addr, u64 handle)
10013 {
10014         unsigned long order = get_order(size);
10015
10016         free_pages((unsigned long) cpu_addr, order);
10017 }
10018
10019 static u64 niu_phys_map_page(struct device *dev, struct page *page,
10020                              unsigned long offset, size_t size,
10021                              enum dma_data_direction direction)
10022 {
10023         return page_to_phys(page) + offset;
10024 }
10025
10026 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
10027                                 size_t size, enum dma_data_direction direction)
10028 {
10029         /* Nothing to do.  */
10030 }
10031
10032 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
10033                                size_t size,
10034                                enum dma_data_direction direction)
10035 {
10036         return __pa(cpu_addr);
10037 }
10038
10039 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10040                                   size_t size,
10041                                   enum dma_data_direction direction)
10042 {
10043         /* Nothing to do.  */
10044 }
10045
10046 static const struct niu_ops niu_phys_ops = {
10047         .alloc_coherent = niu_phys_alloc_coherent,
10048         .free_coherent  = niu_phys_free_coherent,
10049         .map_page       = niu_phys_map_page,
10050         .unmap_page     = niu_phys_unmap_page,
10051         .map_single     = niu_phys_map_single,
10052         .unmap_single   = niu_phys_unmap_single,
10053 };
10054
10055 static int __devinit niu_of_probe(struct platform_device *op)
10056 {
10057         union niu_parent_id parent_id;
10058         struct net_device *dev;
10059         struct niu *np;
10060         const u32 *reg;
10061         int err;
10062
10063         niu_driver_version();
10064
10065         reg = of_get_property(op->dev.of_node, "reg", NULL);
10066         if (!reg) {
10067                 dev_err(&op->dev, "%s: No 'reg' property, aborting\n",
10068                         op->dev.of_node->full_name);
10069                 return -ENODEV;
10070         }
10071
10072         dev = niu_alloc_and_init(&op->dev, NULL, op,
10073                                  &niu_phys_ops, reg[0] & 0x1);
10074         if (!dev) {
10075                 err = -ENOMEM;
10076                 goto err_out;
10077         }
10078         np = netdev_priv(dev);
10079
10080         memset(&parent_id, 0, sizeof(parent_id));
10081         parent_id.of = of_get_parent(op->dev.of_node);
10082
10083         np->parent = niu_get_parent(np, &parent_id,
10084                                     PLAT_TYPE_NIU);
10085         if (!np->parent) {
10086                 err = -ENOMEM;
10087                 goto err_out_free_dev;
10088         }
10089
10090         niu_set_basic_features(dev);
10091
10092         np->regs = of_ioremap(&op->resource[1], 0,
10093                               resource_size(&op->resource[1]),
10094                               "niu regs");
10095         if (!np->regs) {
10096                 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10097                 err = -ENOMEM;
10098                 goto err_out_release_parent;
10099         }
10100
10101         np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10102                                     resource_size(&op->resource[2]),
10103                                     "niu vregs-1");
10104         if (!np->vir_regs_1) {
10105                 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10106                 err = -ENOMEM;
10107                 goto err_out_iounmap;
10108         }
10109
10110         np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10111                                     resource_size(&op->resource[3]),
10112                                     "niu vregs-2");
10113         if (!np->vir_regs_2) {
10114                 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10115                 err = -ENOMEM;
10116                 goto err_out_iounmap;
10117         }
10118
10119         niu_assign_netdev_ops(dev);
10120
10121         err = niu_get_invariants(np);
10122         if (err) {
10123                 if (err != -ENODEV)
10124                         dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10125                 goto err_out_iounmap;
10126         }
10127
10128         err = register_netdev(dev);
10129         if (err) {
10130                 dev_err(&op->dev, "Cannot register net device, aborting\n");
10131                 goto err_out_iounmap;
10132         }
10133
10134         dev_set_drvdata(&op->dev, dev);
10135
10136         niu_device_announce(np);
10137
10138         return 0;
10139
10140 err_out_iounmap:
10141         if (np->vir_regs_1) {
10142                 of_iounmap(&op->resource[2], np->vir_regs_1,
10143                            resource_size(&op->resource[2]));
10144                 np->vir_regs_1 = NULL;
10145         }
10146
10147         if (np->vir_regs_2) {
10148                 of_iounmap(&op->resource[3], np->vir_regs_2,
10149                            resource_size(&op->resource[3]));
10150                 np->vir_regs_2 = NULL;
10151         }
10152
10153         if (np->regs) {
10154                 of_iounmap(&op->resource[1], np->regs,
10155                            resource_size(&op->resource[1]));
10156                 np->regs = NULL;
10157         }
10158
10159 err_out_release_parent:
10160         niu_put_parent(np);
10161
10162 err_out_free_dev:
10163         free_netdev(dev);
10164
10165 err_out:
10166         return err;
10167 }
10168
10169 static int __devexit niu_of_remove(struct platform_device *op)
10170 {
10171         struct net_device *dev = dev_get_drvdata(&op->dev);
10172
10173         if (dev) {
10174                 struct niu *np = netdev_priv(dev);
10175
10176                 unregister_netdev(dev);
10177
10178                 if (np->vir_regs_1) {
10179                         of_iounmap(&op->resource[2], np->vir_regs_1,
10180                                    resource_size(&op->resource[2]));
10181                         np->vir_regs_1 = NULL;
10182                 }
10183
10184                 if (np->vir_regs_2) {
10185                         of_iounmap(&op->resource[3], np->vir_regs_2,
10186                                    resource_size(&op->resource[3]));
10187                         np->vir_regs_2 = NULL;
10188                 }
10189
10190                 if (np->regs) {
10191                         of_iounmap(&op->resource[1], np->regs,
10192                                    resource_size(&op->resource[1]));
10193                         np->regs = NULL;
10194                 }
10195
10196                 niu_ldg_free(np);
10197
10198                 niu_put_parent(np);
10199
10200                 free_netdev(dev);
10201                 dev_set_drvdata(&op->dev, NULL);
10202         }
10203         return 0;
10204 }
10205
10206 static const struct of_device_id niu_match[] = {
10207         {
10208                 .name = "network",
10209                 .compatible = "SUNW,niusl",
10210         },
10211         {},
10212 };
10213 MODULE_DEVICE_TABLE(of, niu_match);
10214
10215 static struct platform_driver niu_of_driver = {
10216         .driver = {
10217                 .name = "niu",
10218                 .owner = THIS_MODULE,
10219                 .of_match_table = niu_match,
10220         },
10221         .probe          = niu_of_probe,
10222         .remove         = __devexit_p(niu_of_remove),
10223 };
10224
10225 #endif /* CONFIG_SPARC64 */
10226
10227 static int __init niu_init(void)
10228 {
10229         int err = 0;
10230
10231         BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10232
10233         niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10234
10235 #ifdef CONFIG_SPARC64
10236         err = platform_driver_register(&niu_of_driver);
10237 #endif
10238
10239         if (!err) {
10240                 err = pci_register_driver(&niu_pci_driver);
10241 #ifdef CONFIG_SPARC64
10242                 if (err)
10243                         platform_driver_unregister(&niu_of_driver);
10244 #endif
10245         }
10246
10247         return err;
10248 }
10249
10250 static void __exit niu_exit(void)
10251 {
10252         pci_unregister_driver(&niu_pci_driver);
10253 #ifdef CONFIG_SPARC64
10254         platform_driver_unregister(&niu_of_driver);
10255 #endif
10256 }
10257
10258 module_init(niu_init);
10259 module_exit(niu_exit);