drivers/net/usb/dm9620.c

   1 /*
   2  * Davicom DM9620 USB 2.0 10/100Mbps ethernet devices
   3  *
   4  * Peter Korsgaard <jacmet@sunsite.dk>
   5  *
   6  * This file is licensed under the terms of the GNU General Public License
   7  * version 2.  This program is licensed "as is" without any warranty of any
   8  * kind, whether express or implied.
   9  * V1.0 - ftp fail fixed
  10  * V1.1 - model name checking, & ether plug function enhancement [0x4f, 0x20]
  11  * V1.2 - init tx/rx checksum
  12  *      - fix dm_write_shared_word(), bug fix
  13  *      - fix 10 Mbps link at power saving mode fail
  14  * V1.3 - Support kernel 2.6.31
  15  * V1.4 - Support eeprom write of ethtool
  16  *        Support DM9685
  17  *        Transmit Check Sum Control by Optopn (Source Code Default: Disable)
  18  *        Recieve Drop Check Sum Error Packet Disable as chip default
  19  * V1.5 - Support RK2818 (Debug the Register Function)
  20  * V1.6 - Solve compiler issue for Linux 2.6.35
  21  * V1.7 - Enable MAC Layer Flow Control and define debug_message for linux version update.
  22  * V1.8 - Enable PHY Layer Flow Control, clear debug code, setup default phy_id value is 1.
  23  *        Update dm9620_mdio_read and dm9620_mdio_write.
  24  *        Fix bug of ethtool eeprom write
  25  * V1.9 - Fixed "deverr" line 367 error in Linux 2.6.38
  26  * V2.0 - Fixed "dm9620_set_multicast" function CRC bug.
  27  * V2.1 - Add 802.3az for dm9621a
  28  * V2.2 - Add PID=0x1269 support CDC mode.
  29  * V2.3 - Add PID=0x0269 support CDC mode.
  30  * V2.41 - Support Linux 3.6.9
  31  * V2.42 - Work to V2.42 according to "DM9620 BulkOut ¸É¤B¤À¸Ñ.doc"
  32  * V2.43 - Special suport for DM9621A in the table 'products'
  33  * V2.45 - Fix the function TxStyle(), correct to be (len%2) from (len%1). 20131211.
  34  */
  35
  36 //#define DEBUG
  37 #define LNX_DM9620_VER_STR  "V2.45"
  38
  39
  40 #include <linux/module.h>
  41 #include <linux/sched.h>
  42 #include <linux/stddef.h>
  43 #include <linux/init.h>
  44 #include <linux/netdevice.h>
  45 #include <linux/etherdevice.h>
  46 #include <linux/ethtool.h>
  47 #include <linux/mii.h>
  48 #include <linux/usb.h>
  49 #include <linux/crc32.h>
  50 #include <linux/usb/usbnet.h>
  51 #include <linux/ctype.h>
  52 #include <linux/skbuff.h>
  53 #include <linux/version.h> // new v1.3
  54
  55 /* datasheet:
  56  http://www.davicom.com.tw
  57 */
  58
  59 /* control requests */
  60 #define DM_READ_REGS    0x00
  61 #define DM_WRITE_REGS   0x01
  62 #define DM_READ_MEMS    0x02
  63 #define DM_WRITE_REG    0x03
  64 #define DM_WRITE_MEMS   0x05
  65 #define DM_WRITE_MEM    0x07
  66
  67 /* registers */
  68 #define DM_NET_CTRL     0x00
  69 #define DM_RX_CTRL      0x05
  70 #define DM_FLOW_CTRL    0x0a
  71 #define DM_SHARED_CTRL  0x0b
  72 #define DM_SHARED_ADDR  0x0c
  73 #define DM_SHARED_DATA  0x0d    /* low + high */
  74 #define DM_EE_PHY_L     0x0d
  75 #define DM_EE_PHY_H     0x0e
  76 #define DM_WAKEUP_CTRL  0x0f
  77 #define DM_PHY_ADDR     0x10    /* 6 bytes */
  78 #define DM_MCAST_ADDR   0x16    /* 8 bytes */
  79 #define DM_GPR_CTRL     0x1e
  80 #define DM_GPR_DATA     0x1f
  81 #define DM_PID      0x2a
  82 #define DM_XPHY_CTRL    0x2e
  83 #define DM_TX_CRC_CTRL  0x31
  84 #define DM_RX_CRC_CTRL  0x32
  85 #define DM_SMIREG       0x91
  86 #define USB_CTRL        0xf4
  87 #define PHY_SPEC_CFG    20
  88 #define DM_TXRX_M       0x5C
  89
  90 #define MD96XX_EEPROM_MAGIC     0x9620
  91 #define DM_MAX_MCAST    64
  92 #define DM_MCAST_SIZE   8
  93 #define DM_EEPROM_LEN   256
  94 #define DM_TX_OVERHEAD  2       /* 2 byte header */
  95 #define DM_RX_OVERHEAD_9601     7       /* 3 byte header + 4 byte crc tail */
  96 #define DM_RX_OVERHEAD          8       /* 4 byte header + 4 byte crc tail */
  97 #define DM_TIMEOUT      1000
  98 #define DM_MODE9620     0x80
  99 #define DM_TX_CS_EN     0        /* Transmit Check Sum Control */
 100 #define DM9620_PHY_ID 1      /* Stone add For kernel read phy register */
 101
 102 struct dm96xx_priv {
 103   //int flag_fail_count; // EVER RX-DBG
 104     int flg_txdbg; // NOW TX-DBG
 105         u8  mode_9620;
 106         u8      tx_fix_mod;
 107 };
 108 #if defined(DEBUG)
 109 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,33)
 110 #define dm9620_print(__dev, format, args...) netdev_dbg((__dev)->net, format, ##args)
 111 #define dm9620_err(__dev, format, args...) netdev_err((__dev)->net, format, ##args)
 112 #else if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 113 #define dm9620_print(dev, format, args...) devdbg(dev, format, ##args)
 114 #define dm9620_err(dev, format, args...) deverr(dev, format, ##args)
 115 #endif
 116 #else
 117 #define dm9620_print(dev, format, args...) printk(format, ##args)
 118 #define dm9620_err(dev, format, args...) printk(format, ##args)
 119 #endif
 120 static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data)
 121 {
 122 //      dm9620_print(dev, "dm_read() reg=0x%02x length=%d", reg, length);
 123         return usb_control_msg(dev->udev,
 124                                usb_rcvctrlpipe(dev->udev, 0),
 125                                DM_READ_REGS,
 126                                USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 127                                0, reg, data, length, USB_CTRL_SET_TIMEOUT); //USB_CTRL_SET_TIMEOUT V.S. USB_CTRL_GET_TIMEOUT
 128 }
 129
 130 static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value)
 131 {
 132         u16 *tmpwPtr;
 133         int ret;
 134         tmpwPtr= kmalloc (2, GFP_ATOMIC);
 135         if (!tmpwPtr)
 136         {
 137                 printk("+++++++++++ JJ5 dm_read_reg() Error: can not kmalloc!\n"); //usbnet_suspend (intf, message);
 138                 return 0;
 139         }
 140
 141         ret = dm_read(dev, reg, 2, tmpwPtr);  // usb_submit_urb v.s. usb_control_msg
 142         *value= (u8)(*tmpwPtr & 0xff);
 143
 144         kfree (tmpwPtr);
 145         return ret;
 146 }
 147
 148 static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data)
 149 {
 150 //  dm9620_print(dev, "dm_write() reg=0x%02x, length=%d", reg, length);
 151         return usb_control_msg(dev->udev,
 152                                usb_sndctrlpipe(dev->udev, 0),
 153                                DM_WRITE_REGS,
 154                                USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
 155                                0, reg, data, length, USB_CTRL_SET_TIMEOUT);
 156 }
 157
 158 static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
 159 {
 160 //      dm9620_print(dev , "dm_write_reg() reg=0x%02x, value=0x%02x", reg, value);
 161         return usb_control_msg(dev->udev,
 162                                usb_sndctrlpipe(dev->udev, 0),
 163                                DM_WRITE_REG,
 164                                USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
 165                                value, reg, NULL, 0, USB_CTRL_SET_TIMEOUT);
 166 }
 167
 168 static void dm_write_async_callback(struct urb *urb)
 169 {
 170         struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
 171
 172         if (urb->status < 0)
 173                 printk(KERN_DEBUG "dm_write_async_callback() failed with %d\n",
 174                        urb->status);
 175
 176         kfree(req);
 177         usb_free_urb(urb);
 178 }
 179
 180 static void dm_write_async_helper(struct usbnet *dev, u8 reg, u8 value,
 181                                   u16 length, void *data)
 182 {
 183         struct usb_ctrlrequest *req;
 184         struct urb *urb;
 185         int status;
 186
 187         urb = usb_alloc_urb(0, GFP_ATOMIC);
 188         if (!urb) {
 189                 dm9620_err(dev, "Error allocating URB in dm_write_async_helper!");
 190                 return;
 191         }
 192
 193         req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
 194         if (!req) {
 195                 dm9620_err(dev, "Failed to allocate memory for control request");
 196                 usb_free_urb(urb);
 197                 return;
 198         }
 199
 200         req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
 201         req->bRequest = length ? DM_WRITE_REGS : DM_WRITE_REG;
 202         req->wValue = cpu_to_le16(value);
 203         req->wIndex = cpu_to_le16(reg);
 204         req->wLength = cpu_to_le16(length);
 205
 206         usb_fill_control_urb(urb, dev->udev,
 207                              usb_sndctrlpipe(dev->udev, 0),
 208                              (void *)req, data, length,
 209                              dm_write_async_callback, req);
 210
 211         status = usb_submit_urb(urb, GFP_ATOMIC);
 212         if (status < 0) {
 213                 dm9620_err(dev, "Error submitting the control message: status=%d",
 214                        status);
 215                 kfree(req);
 216                 usb_free_urb(urb);
 217         }
 218 }
 219
 220 static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data)
 221 {
 222 //  dm9620_print(dev, "dm_write_async() reg=0x%02x length=%d", reg, length);
 223         dm_write_async_helper(dev, reg, 0, length, data);
 224 }
 225
 226 static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
 227 {
 228 //      dm9620_print(dev, "dm_write_reg_async() reg=0x%02x value=0x%02x",
 229 //             reg, value);
 230
 231         dm_write_async_helper(dev, reg, value, 0, NULL);
 232 }
 233
 234 static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 *value)
 235 {
 236         int ret, i;
 237   u16 *tmpwPtr1;
 238
 239         mutex_lock(&dev->phy_mutex);
 240
 241         dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
 242         dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
 243
 244         for (i = 0; i < DM_TIMEOUT; i++) {
 245                 u8 tmp;
 246
 247                 udelay(1);
 248                 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
 249                 if (ret < 0)
 250                         goto out;
 251
 252                 /* ready */
 253                 if ((tmp & 1) == 0)
 254                         break;
 255         }
 256
 257         if (i == DM_TIMEOUT) {
 258                 dm9620_err(dev, "%s read timed out!", phy ? "phy" : "eeprom");
 259                 ret = -EIO;
 260                 goto out;
 261         }
 262
 263         dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
 264 //      ret = dm_read(dev, DM_SHARED_DATA, 2, value);
 265 //Stone add
 266         tmpwPtr1= kmalloc (2, GFP_ATOMIC);
 267         if (!tmpwPtr1)
 268         {
 269                 printk("+++++++++++ JJ5 dm_read_reg() Error: can not kmalloc!\n"); //usbnet_suspend (intf, message);
 270                 return 0;
 271         }
 272
 273         ret = dm_read(dev, DM_SHARED_DATA, 2, tmpwPtr1);  // usb_submit_urb v.s. usb_control_msg
 274         *value= (u16)(*tmpwPtr1 & 0xffff);
 275
 276         kfree (tmpwPtr1);
 277
 278 //      dm9620_print(dev, "read shared %d 0x%02x returned 0x%04x, %d",
 279 //             phy, reg, *value, ret);
 280
 281  out:
 282         mutex_unlock(&dev->phy_mutex);
 283         return ret;
 284 }
 285
 286 static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 value)
 287 {
 288         int ret, i;
 289
 290         mutex_lock(&dev->phy_mutex);
 291
 292         ret = dm_write(dev, DM_SHARED_DATA, 2, &value);
 293         if (ret < 0)
 294                 goto out;
 295
 296         dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
 297         if (!phy) dm_write_reg(dev, DM_SHARED_CTRL, 0x10);
 298         dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x0a : 0x12);
 299         dm_write_reg(dev, DM_SHARED_CTRL, 0x10);
 300
 301         for (i = 0; i < DM_TIMEOUT; i++) {
 302                 u8 tmp;
 303
 304                 udelay(1);
 305                 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
 306                 if (ret < 0)
 307                         goto out;
 308
 309                 /* ready */
 310                 if ((tmp & 1) == 0)
 311                         break;
 312         }
 313
 314         if (i == DM_TIMEOUT) {
 315                 dm9620_err(dev,"%s write timed out!", phy ? "phy" : "eeprom");
 316                 ret = -EIO;
 317                 goto out;
 318         }
 319
 320         dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
 321
 322 out:
 323         mutex_unlock(&dev->phy_mutex);
 324         return ret;
 325 }
 326
 327
 328 static int dm_write_eeprom_word(struct usbnet *dev, int phy, u8 offset, u8 value)
 329 {
 330         int ret, i;
 331         u8  reg,dloc,tmp_H,tmp_L;
 332         __le16 eeword;
 333
 334         //devwarn(dev, " offset =0x%x value = 0x%x ", offset,value);
 335
 336         /* hank: from offset to determin eeprom word register location,reg */
 337         reg = (offset >> 1)&0xff;
 338
 339         /* hank:  high/low byte by odd/even of offset  */
 340         dloc = (offset & 0x01)? DM_EE_PHY_H:DM_EE_PHY_L;
 341
 342         /* retrieve high and low byte from the corresponding reg*/
 343         ret=dm_read_shared_word(dev,0,reg,&eeword);
 344         //devwarn(dev, " reg =0x%x dloc = 0x%x eeword = 0x%4x", reg,dloc,eeword);
 345         //printk(" reg =0x%x dloc = 0x%x eeword = 0x%4x\n", reg,dloc,eeword);
 346
 347         tmp_H = (eeword & 0xff);
 348         tmp_L = (eeword >> 8);
 349
 350         printk("tmp_L =0x%2x tmp_H =0x%2x eeword = 0x%4x\n", tmp_L,tmp_H,eeword);
 351         /* determine new high and low byte */
 352
 353         if (offset & 0x01)  {
 354                 tmp_L = value;  }  else {
 355         tmp_H = value;  }
 356
 357         //printk("updated new: tmp_L =0x%2x tmp_H =0x%2x\n", tmp_L,tmp_H);
 358
 359         mutex_lock(&dev->phy_mutex);
 360
 361
 362         /* hank: write low byte data first to eeprom reg */
 363         // dm_write(dev, (offset & 0x01)? DM_EE_PHY_H:DM_EE_PHY_L, 1, &value);
 364         dm_write(dev,DM_EE_PHY_L, 1, &tmp_H);
 365         /* high byte will be zero */
 366         //(offset & 0x01)? (value = eeword << 8):(value = eeword >> 8);
 367
 368         /* write the not modified 8 bits back to its origional high/low byte reg */
 369         dm_write(dev,DM_EE_PHY_H, 1, &tmp_L);
 370         if (ret < 0)
 371                 goto out;
 372
 373         /* hank : write word location to reg 0x0c  */
 374         ret = dm_write_reg(dev, DM_SHARED_ADDR, reg);
 375
 376         if (!phy) dm_write_reg(dev, DM_SHARED_CTRL, 0x10);
 377         dm_write_reg(dev, DM_SHARED_CTRL, 0x12);
 378         dm_write_reg(dev, DM_SHARED_CTRL, 0x10);
 379
 380         for (i = 0; i < DM_TIMEOUT; i++) {
 381                 u8 tmp;
 382
 383                 udelay(1);
 384                 ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
 385                 if (ret < 0)
 386                         goto out;
 387
 388                 /* ready */
 389                 if ((tmp & 1) == 0)
 390                         break;
 391         }
 392
 393         if (i == DM_TIMEOUT) {
 394                 dm9620_err(dev, "%s write timed out!", phy ? "phy" : "eeprom");
 395                 ret = -EIO;
 396                 goto out;
 397         }
 398
 399         //dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
 400
 401 out:
 402         mutex_unlock(&dev->phy_mutex);
 403         return ret;
 404 }
 405
 406 static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value)
 407 {
 408         return dm_read_shared_word(dev, 0, offset, value);
 409 }
 410
 411
 412 static int dm9620_set_eeprom(struct net_device *net,struct ethtool_eeprom *eeprom, u8 *data)
 413 {
 414         struct usbnet *dev = netdev_priv(net);
 415
 416         dm9620_print(dev, "EEPROM: magic value, magic = 0x%x offset =0x%x data = 0x%x ",eeprom->magic, eeprom->offset,*data);
 417         if (eeprom->magic != MD96XX_EEPROM_MAGIC) {
 418                 dm9620_print(dev, "EEPROM: magic value mismatch, magic = 0x%x",
 419                         eeprom->magic);
 420                 return -EINVAL;
 421         }
 422
 423                 if(dm_write_eeprom_word(dev, 0, eeprom->offset, *data) < 0)
 424                 return -EINVAL;
 425
 426         return 0;
 427 }
 428
 429 static int dm9620_get_eeprom_len(struct net_device *dev)
 430 {
 431         return DM_EEPROM_LEN;
 432 }
 433
 434 static int dm9620_get_eeprom(struct net_device *net,
 435                              struct ethtool_eeprom *eeprom, u8 * data)
 436 {
 437         struct usbnet *dev = netdev_priv(net);
 438         __le16 *ebuf = (__le16 *) data;
 439         int i;
 440
 441         /* access is 16bit */
 442         if ((eeprom->offset % 2) || (eeprom->len % 2))
 443                 return -EINVAL;
 444
 445         for (i = 0; i < eeprom->len / 2; i++) {
 446                 if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i,
 447                                         &ebuf[i]) < 0)
 448                         return -EINVAL;
 449         }
 450         return 0;
 451 }
 452
 453 static int dm9620_mdio_read(struct net_device *netdev, int phy_id, int loc)
 454 {
 455         struct usbnet *dev = netdev_priv(netdev);
 456
 457         __le16 res;
 458
 459         dm_read_shared_word(dev, phy_id, loc, &res);
 460
 461 //  dm9620_print(dev, "dm9620_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x",
 462 //             phy_id, loc, le16_to_cpu(res));
 463         return le16_to_cpu(res);
 464 }
 465
 466 static void dm9620_mdio_write(struct net_device *netdev, int phy_id, int loc,
 467                               int val)
 468 {
 469         struct usbnet *dev = netdev_priv(netdev);
 470         __le16 res = cpu_to_le16(val);
 471         int mdio_val;
 472
 473 //      dm9620_print(dev, "dm9620_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x",
 474 //             phy_id, loc, val);
 475
 476         dm_write_shared_word(dev, phy_id, loc, res);
 477         mdelay(1);
 478         mdio_val = dm9620_mdio_read(netdev, phy_id, loc);
 479
 480 }
 481
 482 static void dm9620_get_drvinfo(struct net_device *net,
 483                                struct ethtool_drvinfo *info)
 484 {
 485         /* Inherit standard device info */
 486         usbnet_get_drvinfo(net, info);
 487         info->eedump_len = DM_EEPROM_LEN;
 488 }
 489
 490 static u32 dm9620_get_link(struct net_device *net)
 491 {
 492         struct usbnet *dev = netdev_priv(net);
 493
 494         return mii_link_ok(&dev->mii);
 495 }
 496
 497 static int dm9620_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
 498 {
 499         struct usbnet *dev = netdev_priv(net);
 500
 501         return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
 502 }
 503
 504
 505 #define DM_LINKEN  (1<<5)
 506 #define DM_MAGICEN (1<<3)
 507 #define DM_LINKST  (1<<2)
 508 #define DM_MAGICST (1<<0)
 509
 510 static void
 511 dm9620_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
 512 {
 513         struct usbnet *dev = netdev_priv(net);
 514         u8 opt;
 515
 516         if (dm_read_reg(dev, DM_WAKEUP_CTRL, &opt) < 0) {
 517                 wolinfo->supported = 0;
 518                 wolinfo->wolopts = 0;
 519                 return;
 520         }
 521         wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
 522         wolinfo->wolopts = 0;
 523
 524         if (opt & DM_LINKEN)
 525                 wolinfo->wolopts |= WAKE_PHY;
 526         if (opt & DM_MAGICEN)
 527                 wolinfo->wolopts |= WAKE_MAGIC;
 528 }
 529
 530
 531 static int
 532 dm9620_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
 533 {
 534         struct usbnet *dev = netdev_priv(net);
 535         u8 opt = 0;
 536
 537         if (wolinfo->wolopts & WAKE_PHY)
 538                 opt |= DM_LINKEN;
 539         if (wolinfo->wolopts & WAKE_MAGIC)
 540                 opt |= DM_MAGICEN;
 541
 542         dm_write_reg(dev, DM_NET_CTRL, 0x48);  // enable WAKEEN
 543
 544 //      dm_write_reg(dev, 0x92, 0x3f); //keep clock on Hank Jun 30
 545
 546         return dm_write_reg(dev, DM_WAKEUP_CTRL, opt);
 547 }
 548
 549 static struct ethtool_ops dm9620_ethtool_ops = {
 550         .get_drvinfo    = dm9620_get_drvinfo,
 551         .get_link       = dm9620_get_link,
 552         .get_msglevel   = usbnet_get_msglevel,
 553         .set_msglevel   = usbnet_set_msglevel,
 554         .get_eeprom_len = dm9620_get_eeprom_len,
 555         .get_eeprom     = dm9620_get_eeprom,
 556         .set_eeprom     = dm9620_set_eeprom,
 557         .get_settings   = usbnet_get_settings,
 558         .set_settings   = usbnet_set_settings,
 559         .nway_reset     = usbnet_nway_reset,
 560         .get_wol        = dm9620_get_wol,
 561         .set_wol        = dm9620_set_wol,
 562 };
 563
 564 static void dm9620_set_multicast(struct net_device *net)
 565 {
 566         struct usbnet *dev = netdev_priv(net);
 567         /* We use the 20 byte dev->data for our 8 byte filter buffer
 568          * to avoid allocating memory that is tricky to free later */
 569         u8 *hashes = (u8 *) & dev->data;
 570         u8 rx_ctl = 0x31;
 571
 572         memset(hashes, 0x00, DM_MCAST_SIZE);
 573         hashes[DM_MCAST_SIZE - 1] |= 0x80;      /* broadcast address */
 574
 575         if (net->flags & IFF_PROMISC) {
 576                 rx_ctl |= 0x02;
 577 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,33)
 578         } else if (net->flags & IFF_ALLMULTI ||  netdev_mc_count(net) > DM_MAX_MCAST) {
 579                 rx_ctl |= 0x8;
 580         } else if (!netdev_mc_empty(net)) {
 581             struct netdev_hw_addr *ha;
 582
 583          netdev_for_each_mc_addr(ha, net) {
 584               u32 crc = crc32_le(~0, ha->addr, ETH_ALEN) & 0x3f;
 585               hashes[crc>>3] |= 1 << (crc & 0x7);
 586                 }
 587 #elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
 588         } else if (net->flags & IFF_ALLMULTI || net->mc_count > DM_MAX_MCAST) {
 589                 rx_ctl |= 0x08;
 590         } else if (net->mc_count) {
 591                 struct dev_mc_list *mc_list = net->mc_list;
 592                 int i;
 593
 594                 for (i = 0; i < net->mc_count; i++, mc_list = mc_list->next) {
 595                         u32 crc = crc32_le(~0, mc_list->dmi_addr, ETH_ALEN) & 0x3f;
 596                         hashes[crc>>3] |= 1 << (crc & 0x7);
 597                 }
 598 #endif
 599         }
 600
 601         dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes);
 602         dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl);
 603 }
 604
 605
 606  static void __dm9620_set_mac_address(struct usbnet *dev)
 607  {
 608          dm_write_async(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr);
 609  }
 610
 611  static int dm9620_set_mac_address(struct net_device *net, void *p)
 612  {
 613          struct sockaddr *addr = p;
 614          struct usbnet *dev = netdev_priv(net);
 615          int i;
 616
 617 #if 1
 618          printk("[dm96] Set mac addr %pM\n", addr->sa_data);  // %x:%x:...
 619          printk("[dm96] ");
 620          for (i=0; i<net->addr_len; i++)
 621          printk("[%02x] ", addr->sa_data[i]);
 622          printk("\n");
 623  #endif
 624
 625          if (!is_valid_ether_addr(addr->sa_data)) {
 626                  dev_err(&net->dev, "not setting invalid mac address %pM\n",
 627                                                                  addr->sa_data);
 628                  return -EINVAL;
 629          }
 630
 631          memcpy(net->dev_addr, addr->sa_data, net->addr_len);
 632          __dm9620_set_mac_address(dev);
 633
 634          return 0;
 635  }
 636
 637 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
 638
 639 static const struct net_device_ops vm_netdev_ops= { // new kernel 2.6.31  (20091217JJ)
 640
 641             .ndo_open               = usbnet_open,
 642             .ndo_stop               = usbnet_stop,
 643             .ndo_start_xmit         = usbnet_start_xmit,
 644             .ndo_tx_timeout         = usbnet_tx_timeout,
 645             .ndo_change_mtu         = usbnet_change_mtu,
 646             .ndo_validate_addr      = eth_validate_addr,
 647             .ndo_do_ioctl           = dm9620_ioctl,
 648 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 2, 0)
 649             .ndo_set_rx_mode        = dm9620_set_multicast,
 650 #else
 651             .ndo_set_multicast_list = dm9620_set_multicast,
 652 #endif
 653             .ndo_set_mac_address    = dm9620_set_mac_address,
 654 };
 655 #endif
 656
 657 static int dm9620_bind(struct usbnet *dev, struct usb_interface *intf)
 658 {
 659   u16 *tmpwPtr2;
 660         int ret,mdio_val,i;
 661         struct dm96xx_priv* priv;
 662         u8 temp;
 663         u8 tmp;
 664
 665         ret = usbnet_get_endpoints(dev, intf);
 666         if (ret)
 667                 goto out;
 668
 669 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
 670         dev->net->netdev_ops = &vm_netdev_ops; // new kernel 2.6.31  (20091217JJ)
 671         dev->net->ethtool_ops = &dm9620_ethtool_ops;
 672 #else
 673         dev->net->do_ioctl = dm9620_ioctl;
 674         dev->net->set_multicast_list = dm9620_set_multicast;
 675         dev->net->ethtool_ops = &dm9620_ethtool_ops;
 676 #endif
 677         dev->net->hard_header_len += DM_TX_OVERHEAD;
 678         dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
 679         dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD+1; // ftp fail fixed
 680         dev->rx_urb_size = (dev->rx_urb_size > 2048) ? dev->rx_urb_size : 2048;
 681
 682         dev->mii.dev = dev->net;
 683         dev->mii.mdio_read = dm9620_mdio_read;
 684         dev->mii.mdio_write = dm9620_mdio_write;
 685         dev->mii.phy_id_mask = 0x1f;
 686         dev->mii.reg_num_mask = 0x1f;
 687         dev->mii.phy_id = DM9620_PHY_ID;
 688
 689         printk("[dm962] Linux Driver = %s\n", LNX_DM9620_VER_STR);
 690 //JJ1
 691         if ( (ret= dm_read_reg(dev, 0x29, &tmp)) >=0)
 692                 printk("++++++[dm962]+++++ dm_read_reg() 0x29 0x%02x\n",tmp);
 693         else
 694                 printk("++++++[dm962]+++++ dm_read_reg() 0x29 fail-func-return %d\n", ret);
 695
 696         if ( (ret= dm_read_reg(dev, 0x28, &tmp)) >=0)
 697                 printk("++++++[dm962]+++++ dm_read_reg() 0x28 0x%02x\n",tmp);
 698         else
 699                 printk("++++++[dm962]+++++ dm_read_reg() 0x28 fail-func-return %d\n", ret);
 700
 701         if ( (ret= dm_read_reg(dev, 0x2b, &tmp)) >=0)
 702                 printk("++++++[dm962]+++++ dm_read_reg() 0x2b 0x%02x\n",tmp);
 703         else
 704                 printk("++++++[dm962]+++++ dm_read_reg() 0x2b fail-func-return %d\n", ret);
 705         if ( (ret= dm_read_reg(dev, 0x2a, &tmp)) >=0)
 706                 printk("++++++[dm962]+++++ dm_read_reg() 0x2a 0x%02x\n",tmp);
 707         else
 708                 printk("++++++[dm962]+++++ dm_read_reg() 0x2a fail-func-return %d\n", ret);
 709
 710 //JJ3
 711         if ( (ret= dm_read_reg(dev, 0xF2, &tmp)) >=0)
 712                 printk("++++++[dm962]+++++ dm_read_reg() 0xF2 0x%02x\n",tmp);
 713         else
 714                 printk("++++++[dm962]+++++ dm_read_reg() 0xF2 fail-func-return %d\n", ret);
 715
 716                 printk("++++++[dm962]+++++  [Analysis.2] 0xF2, D[7] %d %s\n", tmp>>7, (tmp&(1<<7))? "Err: RX Unexpected condition": "OK" );
 717                 printk("++++++[dm962]+++++  [Analysis.2] 0xF2, D[6] %d %s\n", (tmp>>6)&1, (tmp&(1<<6))? "Err: Host Suspend condition": "OK" );
 718                 printk("++++++[dm962]+++++  [Analysis.2] 0xF2, D[5] %d %s\n", (tmp>>5)&1, (tmp&(1<<5))? "EP1: Data Ready": "EP1: Empty" );
 719                 printk("++++++[dm962]+++++  [Analysis.2] 0xF2, D[3] %d %s\n", (tmp>>3)&1, (tmp&(1<<3))? "Err: Bulk out condition": "OK" );
 720
 721                 printk("++++++[dm962]+++++  [Analysis.2] 0xF2, D[2] %d %s\n", (tmp>>2)&1, (tmp&(1<<2))? "Err: TX Buffer full": "OK" );
 722                 printk("++++++[dm962]+++++  [Analysis.2] 0xF2, D[1] %d %s\n", (tmp>>1)&1, (tmp&(1<<1))? "Warn: TX buffer Almost full": "OK" );
 723                 printk("++++++[dm962]+++++  [Analysis.2] 0xF2, D[0] %d %s\n", (tmp>>0)&1, (tmp&(1<<0))? "Status: TX buffer has pkts": "Status: TX buffer 0 pkts" );
 724
 725         /* reset */
 726         dm_write_reg(dev, DM_NET_CTRL, 1);
 727         udelay(20);
 728         //Stone add Enable "MAC layer" Flow Control, TX Pause Packet Enable and
 729         dm_write_reg(dev, DM_FLOW_CTRL, 0x29);
 730         //Stone add Enable "PHY layer" Flow Control support (phy register 0x04 bit 10)
 731         temp = dm9620_mdio_read(dev->net, dev->mii.phy_id, 0x04);
 732         dm9620_mdio_write(dev->net, dev->mii.phy_id, 0x04, temp | 0x400);
 733
 734
 735         /* Add V1.1, Enable auto link while plug in RJ45, Hank July 20, 2009*/
 736         dm_write_reg(dev, USB_CTRL, 0x20);
 737         /* read MAC */
 738         if (dm_read(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr) < 0) {
 739                 printk(KERN_ERR "Error reading MAC address\n");
 740                 ret = -ENODEV;
 741                 goto out;
 742         }
 743
 744 #if 1
 745          printk("[dm96] Chk mac addr %pM\n", dev->net->dev_addr);  // %x:%x...
 746          printk("[dm96] ");
 747          for (i=0; i<ETH_ALEN; i++)
 748          printk("[%02x] ", dev->net->dev_addr[i]);
 749          printk("\n");
 750 #endif
 751
 752         /* read SMI mode register */
 753         priv = dev->driver_priv = kmalloc(sizeof(struct dm96xx_priv), GFP_ATOMIC);
 754         if (!priv) {
 755                 dm9620_err(dev,"Failed to allocate memory for dm96xx_priv");
 756                 ret = -ENOMEM;
 757                 goto out;
 758         }
 759
 760         /* work-around for 9620 mode */
 761         dm_read_reg(dev, 0x5c, &temp);
 762         priv->tx_fix_mod = temp;
 763         printk(KERN_WARNING "[dm96] 9620 tx_fix_mod (DM9_NREV= %d)\n", priv->tx_fix_mod);
 764
 765         printk("[dm96] Fixme: work around for 9620 mode\n");
 766         printk("[dm96] Add tx_fixup() debug...\n");
 767         dm_write_reg(dev, DM_MCAST_ADDR, 0);     // clear data bus to 0s
 768         dm_read_reg(dev, DM_MCAST_ADDR, &temp);  // clear data bus to 0s
 769         ret = dm_read_reg(dev, DM_SMIREG, &temp);   // Must clear data bus before we can read the 'MODE9620' bit
 770
 771         priv->flg_txdbg= 0; //->flag_fail_count= 0;
 772         if (ret<0) {
 773                 printk(KERN_ERR "[dm96] Error read SMI register\n");
 774         }
 775         else priv->mode_9620 = temp & DM_MODE9620;
 776
 777         printk(KERN_WARNING "[dm96] 9620 Mode = %d\n", priv->mode_9620);
 778
 779         dm_read_reg(dev, DM_TXRX_M, &temp);  // Need to check the Chipset version (register 0x5c is 0x02?)
 780         if (temp == 0x02)
 781         {
 782          dm_read_reg(dev, 0x3f, &temp);
 783          temp |= 0x80;
 784    dm_write_reg(dev, 0x3f, temp);
 785    }
 786
 787   //Stone add for check Product ID == 0x1269
 788   tmpwPtr2= kmalloc (2, GFP_ATOMIC);
 789         if (!tmpwPtr2)
 790         {
 791                 printk("+++++++++++ JJ5 dm_read_reg() Error: can not kmalloc!\n"); //usbnet_suspend (intf, message);
 792                 return 0;
 793         }
 794   ret =dm_read(dev, DM_PID, 2, tmpwPtr2);
 795
 796   if (*tmpwPtr2 == 0x1269)
 797    dm_write_reg(dev, DM_SMIREG, 0xa0);
 798
 799   if (*tmpwPtr2 == 0x0269)
 800    dm_write_reg(dev, DM_SMIREG, 0xa0);
 801
 802   kfree (tmpwPtr2);
 803
 804         /* power up phy */
 805         dm_write_reg(dev, DM_GPR_CTRL, 1);
 806         dm_write_reg(dev, DM_GPR_DATA, 0);
 807
 808         /* Init tx/rx checksum */
 809 #if     DM_TX_CS_EN
 810         dm_write_reg(dev, DM_TX_CRC_CTRL, 7);
 811 #endif
 812         dm_write_reg(dev, DM_RX_CRC_CTRL, 2);
 813
 814         /* receive broadcast packets */
 815         dm9620_set_multicast(dev->net);
 816         dm9620_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
 817
 818         /* Hank add, work for comapubility issue (10M Power control) */
 819
 820         dm9620_mdio_write(dev->net, dev->mii.phy_id, PHY_SPEC_CFG, 0x800);
 821         mdio_val = dm9620_mdio_read(dev->net, dev->mii.phy_id, PHY_SPEC_CFG);
 822
 823         dm9620_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
 824                           ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
 825         mii_nway_restart(&dev->mii);
 826
 827 out:
 828         return ret;
 829 }
 830
 831 void dm9620_unbind(struct usbnet *dev, struct usb_interface *intf)
 832 {
 833 struct dm96xx_priv* priv= dev->driver_priv;
 834         printk("dm9620_unbind():\n");
 835
 836    //printk("flag_fail_count  %lu\n", (long unsigned int)priv->flag_fail_count);
 837         printk("flg_txdbg  %lu\n", (long unsigned int)priv->flg_txdbg);
 838         kfree(dev->driver_priv); // displayed dev->.. above, then can free dev
 839
 840 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
 841         printk("rx_length_errors %lu\n",dev->net->stats.rx_length_errors);
 842         printk("rx_over_errors   %lu\n",dev->net->stats.rx_over_errors  );
 843         printk("rx_crc_errors    %lu\n",dev->net->stats.rx_crc_errors   );
 844         printk("rx_frame_errors  %lu\n",dev->net->stats.rx_frame_errors );
 845         printk("rx_fifo_errors   %lu\n",dev->net->stats.rx_fifo_errors  );
 846         printk("rx_missed_errors %lu\n",dev->net->stats.rx_missed_errors);
 847 #else
 848         printk("rx_length_errors %lu\n",dev->stats.rx_length_errors);
 849         printk("rx_over_errors   %lu\n",dev->stats.rx_over_errors  );
 850         printk("rx_crc_errors    %lu\n",dev->stats.rx_crc_errors   );
 851         printk("rx_frame_errors  %lu\n",dev->stats.rx_frame_errors );
 852         printk("rx_fifo_errors   %lu\n",dev->stats.rx_fifo_errors  );
 853         printk("rx_missed_errors %lu\n",dev->stats.rx_missed_errors);
 854 #endif
 855
 856
 857 }
 858
 859 static int dm9620_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 860 {
 861         u8 status;
 862         int len;
 863         struct dm96xx_priv* priv = (struct dm96xx_priv *)dev->driver_priv;
 864
 865         /* 9620 format:
 866            b0: rx status
 867            b1: packet length (incl crc) low
 868            b2: packet length (incl crc) high
 869            b3..n-4: packet data
 870            bn-3..bn: ethernet crc
 871          */
 872
 873         /* 9620 format:
 874            one additional byte then 9620 :
 875            rx_flag in the first pos
 876          */
 877
 878         if (unlikely(skb->len < DM_RX_OVERHEAD_9601)) {   // 20090623
 879                 dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
 880                 return 0;
 881         }
 882
 883         if (priv->mode_9620) {
 884                 /* mode 9620 */
 885
 886                 if (unlikely(skb->len < DM_RX_OVERHEAD)) {  // 20090623
 887                         dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
 888                         return 0;
 889                 }
 890
 891                 //      if (skb->data[0]!=0x01)
 892                 //              priv->flag_fail_count++;
 893
 894                 status = skb->data[1];
 895                 len = (skb->data[2] | (skb->data[3] << 8)) - 4;
 896
 897                 if (unlikely(status & 0xbf)) {
 898 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
 899                         if (status & 0x01) dev->net->stats.rx_fifo_errors++;
 900                         if (status & 0x02) dev->net->stats.rx_crc_errors++;
 901                         if (status & 0x04) dev->net->stats.rx_frame_errors++;
 902                         if (status & 0x20) dev->net->stats.rx_missed_errors++;
 903                         if (status & 0x90) dev->net->stats.rx_length_errors++;
 904 #else
 905                         if (status & 0x01) dev->stats.rx_fifo_errors++;
 906                         if (status & 0x02) dev->stats.rx_crc_errors++;
 907                         if (status & 0x04) dev->stats.rx_frame_errors++;
 908                         if (status & 0x20) dev->stats.rx_missed_errors++;
 909                         if (status & 0x90) dev->stats.rx_length_errors++;
 910 #endif
 911                         return 0;
 912                 }
 913
 914                 skb_pull(skb, 4);
 915                 skb_trim(skb, len);
 916
 917         }
 918         else { /* mode 9620 (original driver code) */
 919                 status = skb->data[0];
 920                 len = (skb->data[1] | (skb->data[2] << 8)) - 4;
 921
 922                 if (unlikely(status & 0xbf)) {
 923 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,31)
 924                         if (status & 0x01) dev->net->stats.rx_fifo_errors++;
 925                         if (status & 0x02) dev->net->stats.rx_crc_errors++;
 926                         if (status & 0x04) dev->net->stats.rx_frame_errors++;
 927                         if (status & 0x20) dev->net->stats.rx_missed_errors++;
 928                         if (status & 0x90) dev->net->stats.rx_length_errors++;
 929 #else
 930                         if (status & 0x01) dev->stats.rx_fifo_errors++;
 931                         if (status & 0x02) dev->stats.rx_crc_errors++;
 932                         if (status & 0x04) dev->stats.rx_frame_errors++;
 933                         if (status & 0x20) dev->stats.rx_missed_errors++;
 934                         if (status & 0x90) dev->stats.rx_length_errors++;
 935 #endif
 936                         return 0;
 937                 }
 938
 939                 skb_pull(skb, 3);
 940                 skb_trim(skb, len);
 941         }
 942
 943         return 1;
 944 } // 'priv'
 945
 946 #define TX_LEN_E  (1<<0)  //EVEN, No action
 947 #define TX_LEN_O  (1<<1)  //ODD, Odd to even workaround
 948 #define TX_LEN_F  (1<<2)  //FULL, Full payload workaround
 949 u8 TxStyle(int len, unsigned full_payload){
 950   u8 s= (len%2)? TX_LEN_O: TX_LEN_E;
 951   len= ((len+1)/2)*2;
 952   len += 2;
 953   if ((len % full_payload)==0)
 954     s |= TX_LEN_F;
 955   return s;
 956 }
 957 struct sk_buff *TxExpend(struct dm96xx_priv* priv, u8 ts, struct sk_buff *skb, gfp_t flags)
 958 {
 959     int newheadroom= 2, newtailroom= 0;
 960     if (ts&TX_LEN_O) newtailroom++;
 961     if (ts&TX_LEN_F) newtailroom += 2;
 962     if (skb_headroom(skb) >= newheadroom) newheadroom= 0; // head no need expend
 963     if (skb_tailroom(skb) >= newtailroom) newtailroom= 0; // tail no need expend
 964     if (newheadroom || newtailroom){
 965                 struct sk_buff *skb2;
 966                 skb2 = skb_copy_expand(skb, newheadroom, newtailroom, flags);
 967                 dev_kfree_skb_any(skb);
 968                 skb = skb2;
 969                 if (!skb){
 970                         printk("[dm96-TxRound].%d expend copy fail, for head, tail= %d, %d\n", priv->flg_txdbg++, newheadroom, newtailroom);
 971                         return NULL;
 972                 }
 973                 printk("[dm96-TxRound].%d expend copy OK, for head, tail= %d, %d\n", priv->flg_txdbg++, newheadroom, newtailroom);
 974     }
 975     return skb;
 976 }
 977 static struct sk_buff *dm9620_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
 978                                        gfp_t flags)
 979 {
 980         int len;
 981     int newheadroom, newtailroom;
 982         struct dm96xx_priv* priv = (struct dm96xx_priv *)dev->driver_priv;
 983
 984         /* format:
 985            b0: packet length low
 986            b1: packet length high
 987            b3..n: packet data
 988         */
 989
 990         len = skb->len;
 991
 992   if (priv->tx_fix_mod<3)
 993   {
 994     /*
 995         if (skb_headroom(skb) < DM_TX_OVERHEAD) {
 996                 struct sk_buff *skb2;
 997                 skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags);
 998                 dev_kfree_skb_any(skb);
 999                 skb = skb2;
1000                 if (!skb)
1001                         return NULL;
1002         }
1003
1004         __skb_push(skb, DM_TX_OVERHEAD);
1005
1006         if ((skb->len % dev->maxpacket) == 0)
1007                 len++;
1008     */
1009     //;DM9620-E4,E5, and E6
1010         /* usbnet adds padding 1 byte if odd len */
1011         /* usbnet adds padding 2 bytes if length is a multiple of packet size
1012            if so, adjust length value in header */
1013      u8 TS= TxStyle(len, dev->maxpacket); //
1014      if (!(skb= TxExpend(priv, TS, skb, flags))) return NULL; //
1015
1016      if (TS & TX_LEN_F) len += 2;
1017
1018      newheadroom= 2; //2
1019      newtailroom= 0; //0, 1, 2, or 3
1020      if (TS & TX_LEN_O) newtailroom++;
1021      if (TS & TX_LEN_F) newtailroom += 2;
1022
1023      if (TS & TX_LEN_O) printk("[dm96-TxRound].%d for LEN_ODD tail_room +1, rslt add %d\n", priv->flg_txdbg, newtailroom);
1024      if (TS & TX_LEN_F) printk("[dm96-TxRound].%d for LEN_PLOAD tail_room +2, rslt add %d\n", priv->flg_txdbg, newtailroom);
1025      if (TS & TX_LEN_F) printk("[dm96-TxRound].%d for LEN_PLOAD data_len +2, len from %d to %d\n", priv->flg_txdbg, len-2, len);
1026      if (TS & (TX_LEN_O|TX_LEN_F)) priv->flg_txdbg++;
1027
1028         __skb_push(skb, newheadroom); //2 bytes,for data[0],data[1]
1029     __skb_put(skb, newtailroom); //0, 1, 2, or 3 bytes (for tailer),
1030                                  //Note: 0, NOTHING
1031                                  //Note: 1, Odd to even WORKAROUND.
1032                                  //Note: 2 or 3, the condition is full payload,
1033                                  // This is the add more two bytes WORKAROUND
1034                                  // for bulkout and buffLen.
1035   }
1036   else
1037   {
1038     //;DM9620-E7
1039         if (skb_headroom(skb) < DM_TX_OVERHEAD) {
1040                 struct sk_buff *skb2;
1041                 skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags);
1042                 dev_kfree_skb_any(skb);
1043                 skb = skb2;
1044                 if (!skb)
1045                         return NULL;
1046         }
1047
1048    newheadroom= 2; //2
1049         __skb_push(skb, newheadroom);  //2 bytes, for data[0],data[1]
1050   }
1051
1052
1053         skb->data[0] = len;
1054         skb->data[1] = len >> 8;
1055
1056         /* hank, recalcute checksum of TCP */
1057
1058
1059         return skb;
1060 } // 'kb'
1061
1062 static void dm9620_status(struct usbnet *dev, struct urb *urb)
1063 {
1064         int link;
1065         u8 *buf;
1066
1067         /* format:
1068            b0: net status
1069            b1: tx status 1
1070            b2: tx status 2
1071            b3: rx status
1072            b4: rx overflow
1073            b5: rx count
1074            b6: tx count
1075            b7: gpr
1076         */
1077
1078         if (urb->actual_length < 8)
1079                 return;
1080
1081         buf = urb->transfer_buffer;
1082
1083         link = !!(buf[0] & 0x40);
1084         if (netif_carrier_ok(dev->net) != link) {
1085                 if (link) {
1086                         netif_carrier_on(dev->net);
1087                         usbnet_defer_kevent (dev, EVENT_LINK_RESET);
1088                 }
1089                 else
1090                         netif_carrier_off(dev->net);
1091                 dm9620_print(dev, "Link Status is: %d", link);
1092         }
1093 }
1094
1095 static int dm9620_link_reset(struct usbnet *dev)
1096 {
1097         struct ethtool_cmd ecmd;
1098         mii_check_media(&dev->mii, 1, 1);
1099         mii_ethtool_gset(&dev->mii, &ecmd);
1100         /* hank add*/
1101 dm9620_mdio_write(dev->net, dev->mii.phy_id, PHY_SPEC_CFG, 0x800);
1102         dm9620_print(dev, "link_reset() speed: %d duplex: %d",
1103                ecmd.speed, ecmd.duplex);
1104
1105         return 0;
1106 }
1107
1108 static const struct driver_info dm9620_info = {
1109         .description    = "Davicom DM9620 USB Ethernet",
1110         .flags          = FLAG_ETHER,
1111         .bind           = dm9620_bind,
1112         .rx_fixup       = dm9620_rx_fixup,
1113         .tx_fixup       = dm9620_tx_fixup,
1114         .status         = dm9620_status,
1115         .link_reset     = dm9620_link_reset,
1116         .reset          = dm9620_link_reset,
1117         .unbind     = dm9620_unbind,
1118 };
1119
1120 static const struct usb_device_id products[] = {
1121         {
1122          USB_DEVICE(0x07aa, 0x9601),    /* Corega FEther USB-TXC */
1123          .driver_info = (unsigned long)&dm9620_info,
1124          },
1125         {
1126          USB_DEVICE(0x0a46, 0x9601),    /* Davicom USB-100 */
1127          .driver_info = (unsigned long)&dm9620_info,
1128          },
1129         {
1130          USB_DEVICE(0x0a46, 0x6688),    /* ZT6688 USB NIC */
1131          .driver_info = (unsigned long)&dm9620_info,
1132          },
1133         {
1134          USB_DEVICE(0x0a46, 0x0268),    /* ShanTou ST268 USB NIC */
1135          .driver_info = (unsigned long)&dm9620_info,
1136          },
1137         {
1138          USB_DEVICE(0x0a46, 0x8515),    /* ADMtek ADM8515 USB NIC */
1139          .driver_info = (unsigned long)&dm9620_info,
1140          },
1141         {
1142         USB_DEVICE(0x0a47, 0x9601),     /* Hirose USB-100 */
1143         .driver_info = (unsigned long)&dm9620_info,
1144          },
1145   {
1146    USB_DEVICE(0x0a46, 0x9620),     /* Davicom 9620 */
1147    .driver_info = (unsigned long)&dm9620_info,
1148    },
1149   {
1150    USB_DEVICE(0x0a46, 0x9621),     /* Davicom 9621 */
1151    .driver_info = (unsigned long)&dm9620_info,
1152    },
1153   {
1154    USB_DEVICE(0x0a46, 0x9622),     /* Davicom 9622 */
1155    .driver_info = (unsigned long)&dm9620_info,
1156    },
1157   {
1158          USB_DEVICE(0x0fe6, 0x8101),     /* Davicom 9601 USB to Fast Ethernet Adapter */
1159    .driver_info = (unsigned long)&dm9620_info,
1160   },
1161   {
1162    USB_DEVICE(0x0a46, 0x1269),     /* Davicom 9621A CDC */
1163    .driver_info = (unsigned long)&dm9620_info,
1164    },
1165   {
1166    USB_DEVICE(0x0a46, 0x0269),     /* Davicom 9620A CDC */
1167    .driver_info = (unsigned long)&dm9620_info,
1168    },
1169    //+
1170    //VID.00
1171    //0.0000 0000 0000
1172   {
1173    USB_DEVICE(0x0000, 0x9620),     /* Davicom 9620 */
1174    .driver_info = (unsigned long)&dm9620_info,
1175    },
1176   {
1177    USB_DEVICE(0x0000, 0x0269),     /* Davicom 9620A CDC */
1178    .driver_info = (unsigned long)&dm9620_info,
1179    },
1180   {
1181    USB_DEVICE(0x0000, 0x9621),     /* Davicom 9621 */
1182    .driver_info = (unsigned long)&dm9620_info,
1183    },
1184   {
1185    USB_DEVICE(0x0000, 0x1269),     /* Davicom 9621A CDC */
1186    .driver_info = (unsigned long)&dm9620_info,
1187    },
1188    //1.0000 0000 0010
1189    //2.0000 0000 0100
1190    //3.0000 0000 0110
1191    //4.0000 0100 0000
1192    //5.0000 0100 0010
1193    //6.0000 0100 0100
1194    //7.0000 0100 0110
1195   {
1196    USB_DEVICE(0x0002, 0x9621),     /* Davicom 9621 */
1197    .driver_info = (unsigned long)&dm9620_info,
1198    },
1199   {
1200    USB_DEVICE(0x0002, 0x1269),     /* Davicom 9621A CDC */
1201    .driver_info = (unsigned long)&dm9620_info,
1202    },
1203   {
1204    USB_DEVICE(0x0004, 0x9621),     /* Davicom 9621 */
1205    .driver_info = (unsigned long)&dm9620_info,
1206    },
1207   {
1208    USB_DEVICE(0x0004, 0x1269),     /* Davicom 9621A CDC */
1209    .driver_info = (unsigned long)&dm9620_info,
1210    },
1211   {
1212    USB_DEVICE(0x0006, 0x9621),     /* Davicom 9621 */
1213    .driver_info = (unsigned long)&dm9620_info,
1214    },
1215   {
1216    USB_DEVICE(0x0006, 0x1269),     /* Davicom 9621A CDC */
1217    .driver_info = (unsigned long)&dm9620_info,
1218    },
1219   {
1220    USB_DEVICE(0x0040, 0x9621),     /* Davicom 9621 */
1221    .driver_info = (unsigned long)&dm9620_info,
1222    },
1223   {
1224    USB_DEVICE(0x0040, 0x1269),     /* Davicom 9621A CDC */
1225    .driver_info = (unsigned long)&dm9620_info,
1226    },
1227   {
1228    USB_DEVICE(0x0042, 0x9621),     /* Davicom 9621 */
1229    .driver_info = (unsigned long)&dm9620_info,
1230    },
1231   {
1232    USB_DEVICE(0x0042, 0x1269),     /* Davicom 9621A CDC */
1233    .driver_info = (unsigned long)&dm9620_info,
1234    },
1235   {
1236    USB_DEVICE(0x0044, 0x9621),     /* Davicom 9621 */
1237    .driver_info = (unsigned long)&dm9620_info,
1238    },
1239   {
1240    USB_DEVICE(0x0044, 0x1269),     /* Davicom 9621A CDC */
1241    .driver_info = (unsigned long)&dm9620_info,
1242    },
1243    //7.0000 0100 0110 (0A46)
1244   {
1245    USB_DEVICE(0x0046, 0x9621),     /* Davicom 9621 */
1246    .driver_info = (unsigned long)&dm9620_info,
1247    },
1248   {
1249    USB_DEVICE(0x0046, 0x1269),     /* Davicom 9621A CDC */
1250    .driver_info = (unsigned long)&dm9620_info,
1251    },
1252      // ..
1253
1254    //8.0010 0000 0000
1255    //9.0010 0000 0010
1256    //A.0010 0000 0100
1257    //B.0010 0000 0110
1258    //C.0010 0100 0000
1259    //D.0010 0100 0010
1260    //E.0010 0100 0100
1261    //F.0010 0100 0110
1262   {
1263    USB_DEVICE(0x0200, 0x9621),     /* Davicom 9621 */
1264    .driver_info = (unsigned long)&dm9620_info,
1265    },
1266   {
1267    USB_DEVICE(0x0200, 0x1269),     /* Davicom 9621A CDC */
1268    .driver_info = (unsigned long)&dm9620_info,
1269    },
1270   {
1271    USB_DEVICE(0x0202, 0x9621),     /* Davicom 9621 */
1272    .driver_info = (unsigned long)&dm9620_info,
1273    },
1274   {
1275    USB_DEVICE(0x0202, 0x1269),     /* Davicom 9621A CDC */
1276    .driver_info = (unsigned long)&dm9620_info,
1277    },
1278   {
1279    USB_DEVICE(0x0204, 0x9621),     /* Davicom 9621 */
1280    .driver_info = (unsigned long)&dm9620_info,
1281    },
1282   {
1283    USB_DEVICE(0x0204, 0x1269),     /* Davicom 9621A CDC */
1284    .driver_info = (unsigned long)&dm9620_info,
1285    },
1286   {
1287    USB_DEVICE(0x0206, 0x9621),     /* Davicom 9621 */
1288    .driver_info = (unsigned long)&dm9620_info,
1289    },
1290   {
1291    USB_DEVICE(0x0206, 0x1269),     /* Davicom 9621A CDC */
1292    .driver_info = (unsigned long)&dm9620_info,
1293    },
1294   {
1295    USB_DEVICE(0x0240, 0x9621),     /* Davicom 9621 */
1296    .driver_info = (unsigned long)&dm9620_info,
1297    },
1298   {
1299    USB_DEVICE(0x0240, 0x1269),     /* Davicom 9621A CDC */
1300    .driver_info = (unsigned long)&dm9620_info,
1301    },
1302   {
1303    USB_DEVICE(0x0242, 0x9621),     /* Davicom 9621 */
1304    .driver_info = (unsigned long)&dm9620_info,
1305    },
1306   {
1307    USB_DEVICE(0x0242, 0x1269),     /* Davicom 9621A CDC */
1308    .driver_info = (unsigned long)&dm9620_info,
1309    },
1310   {
1311    USB_DEVICE(0x0244, 0x9621),     /* Davicom 9621 */
1312    .driver_info = (unsigned long)&dm9620_info,
1313    },
1314   {
1315    USB_DEVICE(0x0244, 0x1269),     /* Davicom 9621A CDC */
1316    .driver_info = (unsigned long)&dm9620_info,
1317    },
1318    //F.0010 0100 0110 (0A46)
1319   {
1320    USB_DEVICE(0x0246, 0x9621),     /* Davicom 9621 */
1321    .driver_info = (unsigned long)&dm9620_info,
1322    },
1323   {
1324    USB_DEVICE(0x0246, 0x1269),     /* Davicom 9621A CDC */
1325    .driver_info = (unsigned long)&dm9620_info,
1326    },
1327      // ..
1328
1329    //10.1000 0000 0000
1330    //11.1000 0000 0010
1331    //12.1000 0000 0100
1332    //13.1000 0000 0110
1333    //14.1000 0100 0000
1334    //15.1000 0100 0010
1335    //16.1000 0100 0100
1336    //17.1000 0100 0110
1337   {
1338    USB_DEVICE(0x0800, 0x9621),     /* Davicom 9621 */
1339    .driver_info = (unsigned long)&dm9620_info,
1340    },
1341   {
1342    USB_DEVICE(0x0800, 0x1269),     /* Davicom 9621A CDC */
1343    .driver_info = (unsigned long)&dm9620_info,
1344    },
1345   {
1346    USB_DEVICE(0x0802, 0x9621),     /* Davicom 9621 */
1347    .driver_info = (unsigned long)&dm9620_info,
1348    },
1349   {
1350    USB_DEVICE(0x0802, 0x1269),     /* Davicom 9621A CDC */
1351    .driver_info = (unsigned long)&dm9620_info,
1352    },
1353   {
1354    USB_DEVICE(0x0804, 0x9621),     /* Davicom 9621 */
1355    .driver_info = (unsigned long)&dm9620_info,
1356    },
1357   {
1358    USB_DEVICE(0x0804, 0x1269),     /* Davicom 9621A CDC */
1359    .driver_info = (unsigned long)&dm9620_info,
1360    },
1361   {
1362    USB_DEVICE(0x0806, 0x9621),     /* Davicom 9621 */
1363    .driver_info = (unsigned long)&dm9620_info,
1364    },
1365   {
1366    USB_DEVICE(0x0806, 0x1269),     /* Davicom 9621A CDC */
1367    .driver_info = (unsigned long)&dm9620_info,
1368    },
1369   {
1370    USB_DEVICE(0x0840, 0x9621),     /* Davicom 9621 */
1371    .driver_info = (unsigned long)&dm9620_info,
1372    },
1373   {
1374    USB_DEVICE(0x0840, 0x1269),     /* Davicom 9621A CDC */
1375    .driver_info = (unsigned long)&dm9620_info,
1376    },
1377   {
1378    USB_DEVICE(0x0842, 0x9621),     /* Davicom 9621 */
1379    .driver_info = (unsigned long)&dm9620_info,
1380    },
1381   {
1382    USB_DEVICE(0x0842, 0x1269),     /* Davicom 9621A CDC */
1383    .driver_info = (unsigned long)&dm9620_info,
1384    },
1385   {
1386    USB_DEVICE(0x0844, 0x9621),     /* Davicom 9621 */
1387    .driver_info = (unsigned long)&dm9620_info,
1388    },
1389   {
1390    USB_DEVICE(0x0844, 0x1269),     /* Davicom 9621A CDC */
1391    .driver_info = (unsigned long)&dm9620_info,
1392    },
1393    //17.1010 0100 0110 (0A46)
1394   {
1395    USB_DEVICE(0x0846, 0x9621),     /* Davicom 9621 */
1396    .driver_info = (unsigned long)&dm9620_info,
1397    },
1398   {
1399    USB_DEVICE(0x0846, 0x1269),     /* Davicom 9621A CDC */
1400    .driver_info = (unsigned long)&dm9620_info,
1401    },
1402      // ..
1403
1404    //18.1010 0000 0000
1405    //19.1010 0000 0010
1406    //1A.1010 0000 0100
1407    //1B.1010 0000 0110
1408    //1C.1010 0100 0000
1409    //1D.1010 0100 0010
1410    //1E.1010 0100 0100
1411   {
1412    USB_DEVICE(0x0A00, 0x9621),     /* Davicom 9621 */
1413    .driver_info = (unsigned long)&dm9620_info,
1414    },
1415   {
1416    USB_DEVICE(0x0A00, 0x1269),     /* Davicom 9621A CDC */
1417    .driver_info = (unsigned long)&dm9620_info,
1418    },
1419   {
1420    USB_DEVICE(0x0A02, 0x9621),     /* Davicom 9621 */
1421    .driver_info = (unsigned long)&dm9620_info,
1422    },
1423   {
1424    USB_DEVICE(0x0A02, 0x1269),     /* Davicom 9621A CDC */
1425    .driver_info = (unsigned long)&dm9620_info,
1426    },
1427   {
1428    USB_DEVICE(0x0A04, 0x9621),     /* Davicom 9621 */
1429    .driver_info = (unsigned long)&dm9620_info,
1430    },
1431   {
1432    USB_DEVICE(0x0A04, 0x1269),     /* Davicom 9621A CDC */
1433    .driver_info = (unsigned long)&dm9620_info,
1434    },
1435   {
1436    USB_DEVICE(0x0A06, 0x9621),     /* Davicom 9621 */
1437    .driver_info = (unsigned long)&dm9620_info,
1438    },
1439   {
1440    USB_DEVICE(0x0A06, 0x1269),     /* Davicom 9621A CDC */
1441    .driver_info = (unsigned long)&dm9620_info,
1442    },
1443   {
1444    USB_DEVICE(0x0A40, 0x9621),     /* Davicom 9621 */
1445    .driver_info = (unsigned long)&dm9620_info,
1446    },
1447   {
1448    USB_DEVICE(0x0A40, 0x1269),     /* Davicom 9621A CDC */
1449    .driver_info = (unsigned long)&dm9620_info,
1450    },
1451   {
1452    USB_DEVICE(0x0A42, 0x9621),     /* Davicom 9621 */
1453    .driver_info = (unsigned long)&dm9620_info,
1454    },
1455   {
1456    USB_DEVICE(0x0A42, 0x1269),     /* Davicom 9621A CDC */
1457    .driver_info = (unsigned long)&dm9620_info,
1458    },
1459   {
1460    USB_DEVICE(0x0A44, 0x9621),     /* Davicom 9621 */
1461    .driver_info = (unsigned long)&dm9620_info,
1462    },
1463   {
1464    USB_DEVICE(0x0A44, 0x1269),     /* Davicom 9621A CDC */
1465    .driver_info = (unsigned long)&dm9620_info,
1466    },
1467    //1F.1010 0100 0110 (0A46)
1468      // .Original Default.
1469    //+
1470    //1268, 1200
1471   {
1472    USB_DEVICE(0x0000, 0x1268),     /* Davicom 9621A CDC */
1473    .driver_info = (unsigned long)&dm9620_info,
1474    },
1475   {
1476    USB_DEVICE(0x0000, 0x1200),     /* Davicom 9620A CDC */
1477    .driver_info = (unsigned long)&dm9620_info,
1478    },
1479   {
1480    USB_DEVICE(0x0000, 0x1220),     /* Davicom 9620A CDC, 1220 test mode */
1481    .driver_info = (unsigned long)&dm9620_info,
1482    },
1483         {},                     // END
1484 };
1485
1486 MODULE_DEVICE_TABLE(usb, products);
1487
1488 static struct usb_driver dm9620_driver = {
1489         .name = "dm9620",
1490         .id_table = products,
1491         .probe = usbnet_probe,
1492         .disconnect = usbnet_disconnect,
1493         .suspend = usbnet_suspend,
1494         .resume = usbnet_resume,
1495 };
1496
1497
1498
1499
1500 static int __init dm9620_init(void)
1501 {
1502         return usb_register(&dm9620_driver);
1503 }
1504
1505 static void __exit dm9620_exit(void)
1506 {
1507         usb_deregister(&dm9620_driver);
1508 }
1509
1510 module_init(dm9620_init);
1511 module_exit(dm9620_exit);
1512
1513 MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
1514 MODULE_DESCRIPTION("Davicom DM9620 USB 2.0 ethernet devices");
1515 MODULE_LICENSE("GPL");
1516