2 * This code is derived from the VIA reference driver (copyright message
3 * below) provided to Red Hat by VIA Networking Technologies, Inc. for
4 * addition to the Linux kernel.
6 * The code has been merged into one source file, cleaned up to follow
7 * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned
8 * for 64bit hardware platforms.
11 * rx_copybreak/alignment
14 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
15 * Additional fixes and clean up: Francois Romieu
17 * This source has not been verified for use in safety critical systems.
19 * Please direct queries about the revamped driver to the linux-kernel
24 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
25 * All rights reserved.
27 * This software may be redistributed and/or modified under
28 * the terms of the GNU General Public License as published by the Free
29 * Software Foundation; either version 2 of the License, or
32 * This program is distributed in the hope that it will be useful, but
33 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
34 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37 * Author: Chuang Liang-Shing, AJ Jiang
41 * MODULE_LICENSE("GPL");
45 #include <linux/module.h>
46 #include <linux/types.h>
47 #include <linux/bitops.h>
48 #include <linux/init.h>
50 #include <linux/errno.h>
51 #include <linux/ioport.h>
52 #include <linux/pci.h>
53 #include <linux/kernel.h>
54 #include <linux/netdevice.h>
55 #include <linux/etherdevice.h>
56 #include <linux/skbuff.h>
57 #include <linux/delay.h>
58 #include <linux/timer.h>
59 #include <linux/slab.h>
60 #include <linux/interrupt.h>
61 #include <linux/string.h>
62 #include <linux/wait.h>
65 #include <linux/uaccess.h>
66 #include <linux/proc_fs.h>
67 #include <linux/inetdevice.h>
68 #include <linux/reboot.h>
69 #include <linux/ethtool.h>
70 #include <linux/mii.h>
72 #include <linux/if_arp.h>
73 #include <linux/if_vlan.h>
75 #include <linux/tcp.h>
76 #include <linux/udp.h>
77 #include <linux/crc-ccitt.h>
78 #include <linux/crc32.h>
80 #include "via-velocity.h"
83 static int velocity_nics;
84 static int msglevel = MSG_LEVEL_INFO;
87 * mac_get_cam_mask - Read a CAM mask
88 * @regs: register block for this velocity
89 * @mask: buffer to store mask
91 * Fetch the mask bits of the selected CAM and store them into the
92 * provided mask buffer.
94 static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
99 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
101 writeb(0, ®s->CAMADDR);
104 for (i = 0; i < 8; i++)
105 *mask++ = readb(&(regs->MARCAM[i]));
108 writeb(0, ®s->CAMADDR);
111 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
115 * mac_set_cam_mask - Set a CAM mask
116 * @regs: register block for this velocity
117 * @mask: CAM mask to load
119 * Store a new mask into a CAM
121 static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
124 /* Select CAM mask */
125 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
127 writeb(CAMADDR_CAMEN, ®s->CAMADDR);
129 for (i = 0; i < 8; i++)
130 writeb(*mask++, &(regs->MARCAM[i]));
133 writeb(0, ®s->CAMADDR);
136 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
139 static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask)
142 /* Select CAM mask */
143 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
145 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR);
147 for (i = 0; i < 8; i++)
148 writeb(*mask++, &(regs->MARCAM[i]));
151 writeb(0, ®s->CAMADDR);
154 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
158 * mac_set_cam - set CAM data
159 * @regs: register block of this velocity
161 * @addr: 2 or 6 bytes of CAM data
163 * Load an address or vlan tag into a CAM
165 static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr)
169 /* Select CAM mask */
170 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
174 writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR);
176 for (i = 0; i < 6; i++)
177 writeb(*addr++, &(regs->MARCAM[i]));
179 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
183 writeb(0, ®s->CAMADDR);
186 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
189 static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx,
193 /* Select CAM mask */
194 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
198 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR);
199 writew(*((u16 *) addr), ®s->MARCAM[0]);
201 BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR);
205 writeb(0, ®s->CAMADDR);
208 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR);
213 * mac_wol_reset - reset WOL after exiting low power
214 * @regs: register block of this velocity
216 * Called after we drop out of wake on lan mode in order to
217 * reset the Wake on lan features. This function doesn't restore
218 * the rest of the logic from the result of sleep/wakeup
220 static void mac_wol_reset(struct mac_regs __iomem *regs)
223 /* Turn off SWPTAG right after leaving power mode */
224 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW);
225 /* clear sticky bits */
226 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
228 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR);
229 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
230 /* disable force PME-enable */
231 writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr);
232 /* disable power-event config bit */
233 writew(0xFFFF, ®s->WOLCRClr);
234 /* clear power status */
235 writew(0xFFFF, ®s->WOLSRClr);
238 static const struct ethtool_ops velocity_ethtool_ops;
241 Define module options
244 MODULE_AUTHOR("VIA Networking Technologies, Inc.");
245 MODULE_LICENSE("GPL");
246 MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
248 #define VELOCITY_PARAM(N, D) \
249 static int N[MAX_UNITS] = OPTION_DEFAULT;\
250 module_param_array(N, int, NULL, 0); \
251 MODULE_PARM_DESC(N, D);
253 #define RX_DESC_MIN 64
254 #define RX_DESC_MAX 255
255 #define RX_DESC_DEF 64
256 VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
258 #define TX_DESC_MIN 16
259 #define TX_DESC_MAX 256
260 #define TX_DESC_DEF 64
261 VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
263 #define RX_THRESH_MIN 0
264 #define RX_THRESH_MAX 3
265 #define RX_THRESH_DEF 0
266 /* rx_thresh[] is used for controlling the receive fifo threshold.
267 0: indicate the rxfifo threshold is 128 bytes.
268 1: indicate the rxfifo threshold is 512 bytes.
269 2: indicate the rxfifo threshold is 1024 bytes.
270 3: indicate the rxfifo threshold is store & forward.
272 VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
274 #define DMA_LENGTH_MIN 0
275 #define DMA_LENGTH_MAX 7
276 #define DMA_LENGTH_DEF 6
278 /* DMA_length[] is used for controlling the DMA length
285 6: SF(flush till emply)
286 7: SF(flush till emply)
288 VELOCITY_PARAM(DMA_length, "DMA length");
290 #define IP_ALIG_DEF 0
291 /* IP_byte_align[] is used for IP header DWORD byte aligned
292 0: indicate the IP header won't be DWORD byte aligned.(Default) .
293 1: indicate the IP header will be DWORD byte aligned.
294 In some environment, the IP header should be DWORD byte aligned,
295 or the packet will be droped when we receive it. (eg: IPVS)
297 VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
299 #define FLOW_CNTL_DEF 1
300 #define FLOW_CNTL_MIN 1
301 #define FLOW_CNTL_MAX 5
303 /* flow_control[] is used for setting the flow control ability of NIC.
304 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
305 2: enable TX flow control.
306 3: enable RX flow control.
307 4: enable RX/TX flow control.
310 VELOCITY_PARAM(flow_control, "Enable flow control ability");
312 #define MED_LNK_DEF 0
313 #define MED_LNK_MIN 0
314 #define MED_LNK_MAX 5
315 /* speed_duplex[] is used for setting the speed and duplex mode of NIC.
316 0: indicate autonegotiation for both speed and duplex mode
317 1: indicate 100Mbps half duplex mode
318 2: indicate 100Mbps full duplex mode
319 3: indicate 10Mbps half duplex mode
320 4: indicate 10Mbps full duplex mode
321 5: indicate 1000Mbps full duplex mode
324 if EEPROM have been set to the force mode, this option is ignored
327 VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
329 #define VAL_PKT_LEN_DEF 0
330 /* ValPktLen[] is used for setting the checksum offload ability of NIC.
331 0: Receive frame with invalid layer 2 length (Default)
332 1: Drop frame with invalid layer 2 length
334 VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
336 #define WOL_OPT_DEF 0
337 #define WOL_OPT_MIN 0
338 #define WOL_OPT_MAX 7
339 /* wol_opts[] is used for controlling wake on lan behavior.
340 0: Wake up if recevied a magic packet. (Default)
341 1: Wake up if link status is on/off.
342 2: Wake up if recevied an arp packet.
343 4: Wake up if recevied any unicast packet.
344 Those value can be sumed up to support more than one option.
346 VELOCITY_PARAM(wol_opts, "Wake On Lan options");
348 static int rx_copybreak = 200;
349 module_param(rx_copybreak, int, 0644);
350 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
353 * Internal board variants. At the moment we have only one
355 static struct velocity_info_tbl chip_info_table[] = {
356 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
361 * Describe the PCI device identifiers that we support in this
362 * device driver. Used for hotplug autoloading.
364 static DEFINE_PCI_DEVICE_TABLE(velocity_id_table) = {
365 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
369 MODULE_DEVICE_TABLE(pci, velocity_id_table);
372 * get_chip_name - identifier to name
373 * @id: chip identifier
375 * Given a chip identifier return a suitable description. Returns
376 * a pointer a static string valid while the driver is loaded.
378 static const char *get_chip_name(enum chip_type chip_id)
381 for (i = 0; chip_info_table[i].name != NULL; i++)
382 if (chip_info_table[i].chip_id == chip_id)
384 return chip_info_table[i].name;
388 * velocity_remove1 - device unplug
389 * @pdev: PCI device being removed
391 * Device unload callback. Called on an unplug or on module
392 * unload for each active device that is present. Disconnects
393 * the device from the network layer and frees all the resources
395 static void velocity_remove1(struct pci_dev *pdev)
397 struct net_device *dev = pci_get_drvdata(pdev);
398 struct velocity_info *vptr = netdev_priv(dev);
400 unregister_netdev(dev);
401 iounmap(vptr->mac_regs);
402 pci_release_regions(pdev);
403 pci_disable_device(pdev);
404 pci_set_drvdata(pdev, NULL);
411 * velocity_set_int_opt - parser for integer options
412 * @opt: pointer to option value
413 * @val: value the user requested (or -1 for default)
414 * @min: lowest value allowed
415 * @max: highest value allowed
416 * @def: default value
417 * @name: property name
420 * Set an integer property in the module options. This function does
421 * all the verification and checking as well as reporting so that
422 * we don't duplicate code for each option.
424 static void velocity_set_int_opt(int *opt, int val, int min, int max, int def,
425 char *name, const char *devname)
429 else if (val < min || val > max) {
430 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
431 devname, name, min, max);
434 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
441 * velocity_set_bool_opt - parser for boolean options
442 * @opt: pointer to option value
443 * @val: value the user requested (or -1 for default)
444 * @def: default value (yes/no)
445 * @flag: numeric value to set for true.
446 * @name: property name
449 * Set a boolean property in the module options. This function does
450 * all the verification and checking as well as reporting so that
451 * we don't duplicate code for each option.
453 static void velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag,
454 char *name, const char *devname)
458 *opt |= (def ? flag : 0);
459 else if (val < 0 || val > 1) {
460 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
462 *opt |= (def ? flag : 0);
464 printk(KERN_INFO "%s: set parameter %s to %s\n",
465 devname, name, val ? "TRUE" : "FALSE");
466 *opt |= (val ? flag : 0);
471 * velocity_get_options - set options on device
472 * @opts: option structure for the device
473 * @index: index of option to use in module options array
474 * @devname: device name
476 * Turn the module and command options into a single structure
477 * for the current device
479 static void velocity_get_options(struct velocity_opt *opts, int index,
483 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
484 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
485 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
486 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
488 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
489 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
490 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
491 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
492 velocity_set_int_opt(&opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname);
493 opts->numrx = (opts->numrx & ~3);
497 * velocity_init_cam_filter - initialise CAM
498 * @vptr: velocity to program
500 * Initialize the content addressable memory used for filters. Load
501 * appropriately according to the presence of VLAN
503 static void velocity_init_cam_filter(struct velocity_info *vptr)
505 struct mac_regs __iomem *regs = vptr->mac_regs;
506 unsigned int vid, i = 0;
508 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
509 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG);
510 WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG);
512 /* Disable all CAMs */
513 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
514 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
515 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
516 mac_set_cam_mask(regs, vptr->mCAMmask);
519 for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) {
520 mac_set_vlan_cam(regs, i, (u8 *) &vid);
521 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
522 if (++i >= VCAM_SIZE)
525 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
528 static int velocity_vlan_rx_add_vid(struct net_device *dev,
529 __be16 proto, u16 vid)
531 struct velocity_info *vptr = netdev_priv(dev);
533 spin_lock_irq(&vptr->lock);
534 set_bit(vid, vptr->active_vlans);
535 velocity_init_cam_filter(vptr);
536 spin_unlock_irq(&vptr->lock);
540 static int velocity_vlan_rx_kill_vid(struct net_device *dev,
541 __be16 proto, u16 vid)
543 struct velocity_info *vptr = netdev_priv(dev);
545 spin_lock_irq(&vptr->lock);
546 clear_bit(vid, vptr->active_vlans);
547 velocity_init_cam_filter(vptr);
548 spin_unlock_irq(&vptr->lock);
552 static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
554 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
558 * velocity_rx_reset - handle a receive reset
559 * @vptr: velocity we are resetting
561 * Reset the ownership and status for the receive ring side.
562 * Hand all the receive queue to the NIC.
564 static void velocity_rx_reset(struct velocity_info *vptr)
567 struct mac_regs __iomem *regs = vptr->mac_regs;
570 velocity_init_rx_ring_indexes(vptr);
573 * Init state, all RD entries belong to the NIC
575 for (i = 0; i < vptr->options.numrx; ++i)
576 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
578 writew(vptr->options.numrx, ®s->RBRDU);
579 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
580 writew(0, ®s->RDIdx);
581 writew(vptr->options.numrx - 1, ®s->RDCSize);
585 * velocity_get_opt_media_mode - get media selection
586 * @vptr: velocity adapter
588 * Get the media mode stored in EEPROM or module options and load
589 * mii_status accordingly. The requested link state information
592 static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
596 switch (vptr->options.spd_dpx) {
598 status = VELOCITY_AUTONEG_ENABLE;
600 case SPD_DPX_100_FULL:
601 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
603 case SPD_DPX_10_FULL:
604 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
606 case SPD_DPX_100_HALF:
607 status = VELOCITY_SPEED_100;
609 case SPD_DPX_10_HALF:
610 status = VELOCITY_SPEED_10;
612 case SPD_DPX_1000_FULL:
613 status = VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
616 vptr->mii_status = status;
621 * safe_disable_mii_autopoll - autopoll off
622 * @regs: velocity registers
624 * Turn off the autopoll and wait for it to disable on the chip
626 static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs)
631 writeb(0, ®s->MIICR);
632 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
634 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
640 * enable_mii_autopoll - turn on autopolling
641 * @regs: velocity registers
643 * Enable the MII link status autopoll feature on the Velocity
644 * hardware. Wait for it to enable.
646 static void enable_mii_autopoll(struct mac_regs __iomem *regs)
650 writeb(0, &(regs->MIICR));
651 writeb(MIIADR_SWMPL, ®s->MIIADR);
653 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
655 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
659 writeb(MIICR_MAUTO, ®s->MIICR);
661 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
663 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR))
670 * velocity_mii_read - read MII data
671 * @regs: velocity registers
672 * @index: MII register index
673 * @data: buffer for received data
675 * Perform a single read of an MII 16bit register. Returns zero
676 * on success or -ETIMEDOUT if the PHY did not respond.
678 static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
683 * Disable MIICR_MAUTO, so that mii addr can be set normally
685 safe_disable_mii_autopoll(regs);
687 writeb(index, ®s->MIIADR);
689 BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR);
691 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
692 if (!(readb(®s->MIICR) & MIICR_RCMD))
696 *data = readw(®s->MIIDATA);
698 enable_mii_autopoll(regs);
699 if (ww == W_MAX_TIMEOUT)
705 * mii_check_media_mode - check media state
706 * @regs: velocity registers
708 * Check the current MII status and determine the link status
711 static u32 mii_check_media_mode(struct mac_regs __iomem *regs)
716 if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs))
717 status |= VELOCITY_LINK_FAIL;
719 if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs))
720 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
721 else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs))
722 status |= (VELOCITY_SPEED_1000);
724 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
725 if (ANAR & ADVERTISE_100FULL)
726 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
727 else if (ANAR & ADVERTISE_100HALF)
728 status |= VELOCITY_SPEED_100;
729 else if (ANAR & ADVERTISE_10FULL)
730 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
732 status |= (VELOCITY_SPEED_10);
735 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
736 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
737 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
738 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
739 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
740 status |= VELOCITY_AUTONEG_ENABLE;
748 * velocity_mii_write - write MII data
749 * @regs: velocity registers
750 * @index: MII register index
751 * @data: 16bit data for the MII register
753 * Perform a single write to an MII 16bit register. Returns zero
754 * on success or -ETIMEDOUT if the PHY did not respond.
756 static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
761 * Disable MIICR_MAUTO, so that mii addr can be set normally
763 safe_disable_mii_autopoll(regs);
766 writeb(mii_addr, ®s->MIIADR);
768 writew(data, ®s->MIIDATA);
770 /* turn on MIICR_WCMD */
771 BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR);
773 /* W_MAX_TIMEOUT is the timeout period */
774 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
776 if (!(readb(®s->MIICR) & MIICR_WCMD))
779 enable_mii_autopoll(regs);
781 if (ww == W_MAX_TIMEOUT)
787 * set_mii_flow_control - flow control setup
788 * @vptr: velocity interface
790 * Set up the flow control on this interface according to
791 * the supplied user/eeprom options.
793 static void set_mii_flow_control(struct velocity_info *vptr)
795 /*Enable or Disable PAUSE in ANAR */
796 switch (vptr->options.flow_cntl) {
798 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
799 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
803 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
804 MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
807 case FLOW_CNTL_TX_RX:
808 MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
809 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
812 case FLOW_CNTL_DISABLE:
813 MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs);
814 MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs);
822 * mii_set_auto_on - autonegotiate on
825 * Enable autonegotation on this interface
827 static void mii_set_auto_on(struct velocity_info *vptr)
829 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs))
830 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
832 MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs);
835 static u32 check_connection_type(struct mac_regs __iomem *regs)
840 PHYSR0 = readb(®s->PHYSR0);
843 if (!(PHYSR0 & PHYSR0_LINKGD))
844 status|=VELOCITY_LINK_FAIL;
847 if (PHYSR0 & PHYSR0_FDPX)
848 status |= VELOCITY_DUPLEX_FULL;
850 if (PHYSR0 & PHYSR0_SPDG)
851 status |= VELOCITY_SPEED_1000;
852 else if (PHYSR0 & PHYSR0_SPD10)
853 status |= VELOCITY_SPEED_10;
855 status |= VELOCITY_SPEED_100;
857 if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) {
858 velocity_mii_read(regs, MII_ADVERTISE, &ANAR);
859 if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF))
860 == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) {
861 if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs))
862 status |= VELOCITY_AUTONEG_ENABLE;
870 * velocity_set_media_mode - set media mode
871 * @mii_status: old MII link state
873 * Check the media link state and configure the flow control
874 * PHY and also velocity hardware setup accordingly. In particular
875 * we need to set up CD polling and frame bursting.
877 static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
880 struct mac_regs __iomem *regs = vptr->mac_regs;
882 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
883 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
885 /* Set mii link status */
886 set_mii_flow_control(vptr);
889 Check if new status is consistent with current status
890 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) ||
891 (mii_status==curr_status)) {
892 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
893 vptr->mii_status=check_connection_type(vptr->mac_regs);
894 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
899 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
900 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
903 * If connection type is AUTO
905 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
906 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
907 /* clear force MAC mode bit */
908 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR);
909 /* set duplex mode of MAC according to duplex mode of MII */
910 MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs);
911 MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
912 MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs);
914 /* enable AUTO-NEGO mode */
915 mii_set_auto_on(vptr);
922 * 1. if it's 3119, disable frame bursting in halfduplex mode
923 * and enable it in fullduplex mode
924 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
925 * 3. only enable CD heart beat counter in 10HD mode
928 /* set force MAC mode bit */
929 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
931 CHIPGCR = readb(®s->CHIPGCR);
933 if (mii_status & VELOCITY_SPEED_1000)
934 CHIPGCR |= CHIPGCR_FCGMII;
936 CHIPGCR &= ~CHIPGCR_FCGMII;
938 if (mii_status & VELOCITY_DUPLEX_FULL) {
939 CHIPGCR |= CHIPGCR_FCFDX;
940 writeb(CHIPGCR, ®s->CHIPGCR);
941 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
942 if (vptr->rev_id < REV_ID_VT3216_A0)
943 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
945 CHIPGCR &= ~CHIPGCR_FCFDX;
946 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
947 writeb(CHIPGCR, ®s->CHIPGCR);
948 if (vptr->rev_id < REV_ID_VT3216_A0)
949 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
952 velocity_mii_read(vptr->mac_regs, MII_CTRL1000, &CTRL1000);
953 CTRL1000 &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
954 if ((mii_status & VELOCITY_SPEED_1000) &&
955 (mii_status & VELOCITY_DUPLEX_FULL)) {
956 CTRL1000 |= ADVERTISE_1000FULL;
958 velocity_mii_write(vptr->mac_regs, MII_CTRL1000, CTRL1000);
960 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10))
961 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
963 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
965 /* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */
966 velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR);
967 ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF));
968 if (mii_status & VELOCITY_SPEED_100) {
969 if (mii_status & VELOCITY_DUPLEX_FULL)
970 ANAR |= ADVERTISE_100FULL;
972 ANAR |= ADVERTISE_100HALF;
973 } else if (mii_status & VELOCITY_SPEED_10) {
974 if (mii_status & VELOCITY_DUPLEX_FULL)
975 ANAR |= ADVERTISE_10FULL;
977 ANAR |= ADVERTISE_10HALF;
979 velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR);
980 /* enable AUTO-NEGO mode */
981 mii_set_auto_on(vptr);
982 /* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */
984 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
985 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
986 return VELOCITY_LINK_CHANGE;
990 * velocity_print_link_status - link status reporting
991 * @vptr: velocity to report on
993 * Turn the link status of the velocity card into a kernel log
994 * description of the new link state, detailing speed and duplex
997 static void velocity_print_link_status(struct velocity_info *vptr)
1000 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1001 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1002 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1003 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1005 if (vptr->mii_status & VELOCITY_SPEED_1000)
1006 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1007 else if (vptr->mii_status & VELOCITY_SPEED_100)
1008 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1010 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1012 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1013 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1015 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1017 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1018 switch (vptr->options.spd_dpx) {
1019 case SPD_DPX_1000_FULL:
1020 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps full duplex\n");
1022 case SPD_DPX_100_HALF:
1023 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1025 case SPD_DPX_100_FULL:
1026 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1028 case SPD_DPX_10_HALF:
1029 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1031 case SPD_DPX_10_FULL:
1032 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1041 * enable_flow_control_ability - flow control
1042 * @vptr: veloity to configure
1044 * Set up flow control according to the flow control options
1045 * determined by the eeprom/configuration.
1047 static void enable_flow_control_ability(struct velocity_info *vptr)
1050 struct mac_regs __iomem *regs = vptr->mac_regs;
1052 switch (vptr->options.flow_cntl) {
1054 case FLOW_CNTL_DEFAULT:
1055 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0))
1056 writel(CR0_FDXRFCEN, ®s->CR0Set);
1058 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1060 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0))
1061 writel(CR0_FDXTFCEN, ®s->CR0Set);
1063 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1067 writel(CR0_FDXTFCEN, ®s->CR0Set);
1068 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1072 writel(CR0_FDXRFCEN, ®s->CR0Set);
1073 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1076 case FLOW_CNTL_TX_RX:
1077 writel(CR0_FDXTFCEN, ®s->CR0Set);
1078 writel(CR0_FDXRFCEN, ®s->CR0Set);
1081 case FLOW_CNTL_DISABLE:
1082 writel(CR0_FDXRFCEN, ®s->CR0Clr);
1083 writel(CR0_FDXTFCEN, ®s->CR0Clr);
1093 * velocity_soft_reset - soft reset
1094 * @vptr: velocity to reset
1096 * Kick off a soft reset of the velocity adapter and then poll
1097 * until the reset sequence has completed before returning.
1099 static int velocity_soft_reset(struct velocity_info *vptr)
1101 struct mac_regs __iomem *regs = vptr->mac_regs;
1104 writel(CR0_SFRST, ®s->CR0Set);
1106 for (i = 0; i < W_MAX_TIMEOUT; i++) {
1108 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set))
1112 if (i == W_MAX_TIMEOUT) {
1113 writel(CR0_FORSRST, ®s->CR0Set);
1114 /* FIXME: PCI POSTING */
1122 * velocity_set_multi - filter list change callback
1123 * @dev: network device
1125 * Called by the network layer when the filter lists need to change
1126 * for a velocity adapter. Reload the CAMs with the new address
1129 static void velocity_set_multi(struct net_device *dev)
1131 struct velocity_info *vptr = netdev_priv(dev);
1132 struct mac_regs __iomem *regs = vptr->mac_regs;
1135 struct netdev_hw_addr *ha;
1137 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1138 writel(0xffffffff, ®s->MARCAM[0]);
1139 writel(0xffffffff, ®s->MARCAM[4]);
1140 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
1141 } else if ((netdev_mc_count(dev) > vptr->multicast_limit) ||
1142 (dev->flags & IFF_ALLMULTI)) {
1143 writel(0xffffffff, ®s->MARCAM[0]);
1144 writel(0xffffffff, ®s->MARCAM[4]);
1145 rx_mode = (RCR_AM | RCR_AB);
1147 int offset = MCAM_SIZE - vptr->multicast_limit;
1148 mac_get_cam_mask(regs, vptr->mCAMmask);
1151 netdev_for_each_mc_addr(ha, dev) {
1152 mac_set_cam(regs, i + offset, ha->addr);
1153 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
1157 mac_set_cam_mask(regs, vptr->mCAMmask);
1158 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1160 if (dev->mtu > 1500)
1163 BYTE_REG_BITS_ON(rx_mode, ®s->RCR);
1168 * MII access , media link mode setting functions
1172 * mii_init - set up MII
1173 * @vptr: velocity adapter
1174 * @mii_status: links tatus
1176 * Set up the PHY for the current link state.
1178 static void mii_init(struct velocity_info *vptr, u32 mii_status)
1182 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
1183 case PHYID_CICADA_CS8201:
1185 * Reset to hardware default
1187 MII_REG_BITS_OFF((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1189 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1190 * off it in NWay-forced half mode for NWay-forced v.s.
1191 * legacy-forced issue.
1193 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1194 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1196 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1198 * Turn on Link/Activity LED enable bit for CIS8201
1200 MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs);
1202 case PHYID_VT3216_32BIT:
1203 case PHYID_VT3216_64BIT:
1205 * Reset to hardware default
1207 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1209 * Turn on ECHODIS bit in NWay-forced full mode and turn it
1210 * off it in NWay-forced half mode for NWay-forced v.s.
1211 * legacy-forced issue
1213 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1214 MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1216 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs);
1219 case PHYID_MARVELL_1000:
1220 case PHYID_MARVELL_1000S:
1222 * Assert CRS on Transmit
1224 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
1226 * Reset to hardware default
1228 MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs);
1233 velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR);
1234 if (BMCR & BMCR_ISOLATE) {
1235 BMCR &= ~BMCR_ISOLATE;
1236 velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR);
1241 * setup_queue_timers - Setup interrupt timers
1243 * Setup interrupt frequency during suppression (timeout if the frame
1244 * count isn't filled).
1246 static void setup_queue_timers(struct velocity_info *vptr)
1248 /* Only for newer revisions */
1249 if (vptr->rev_id >= REV_ID_VT3216_A0) {
1250 u8 txqueue_timer = 0;
1251 u8 rxqueue_timer = 0;
1253 if (vptr->mii_status & (VELOCITY_SPEED_1000 |
1254 VELOCITY_SPEED_100)) {
1255 txqueue_timer = vptr->options.txqueue_timer;
1256 rxqueue_timer = vptr->options.rxqueue_timer;
1259 writeb(txqueue_timer, &vptr->mac_regs->TQETMR);
1260 writeb(rxqueue_timer, &vptr->mac_regs->RQETMR);
1265 * setup_adaptive_interrupts - Setup interrupt suppression
1267 * @vptr velocity adapter
1269 * The velocity is able to suppress interrupt during high interrupt load.
1270 * This function turns on that feature.
1272 static void setup_adaptive_interrupts(struct velocity_info *vptr)
1274 struct mac_regs __iomem *regs = vptr->mac_regs;
1275 u16 tx_intsup = vptr->options.tx_intsup;
1276 u16 rx_intsup = vptr->options.rx_intsup;
1278 /* Setup default interrupt mask (will be changed below) */
1279 vptr->int_mask = INT_MASK_DEF;
1281 /* Set Tx Interrupt Suppression Threshold */
1282 writeb(CAMCR_PS0, ®s->CAMCR);
1283 if (tx_intsup != 0) {
1284 vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I |
1285 ISR_PTX2I | ISR_PTX3I);
1286 writew(tx_intsup, ®s->ISRCTL);
1288 writew(ISRCTL_TSUPDIS, ®s->ISRCTL);
1290 /* Set Rx Interrupt Suppression Threshold */
1291 writeb(CAMCR_PS1, ®s->CAMCR);
1292 if (rx_intsup != 0) {
1293 vptr->int_mask &= ~ISR_PRXI;
1294 writew(rx_intsup, ®s->ISRCTL);
1296 writew(ISRCTL_RSUPDIS, ®s->ISRCTL);
1298 /* Select page to interrupt hold timer */
1299 writeb(0, ®s->CAMCR);
1303 * velocity_init_registers - initialise MAC registers
1304 * @vptr: velocity to init
1305 * @type: type of initialisation (hot or cold)
1307 * Initialise the MAC on a reset or on first set up on the
1310 static void velocity_init_registers(struct velocity_info *vptr,
1311 enum velocity_init_type type)
1313 struct mac_regs __iomem *regs = vptr->mac_regs;
1316 mac_wol_reset(regs);
1319 case VELOCITY_INIT_RESET:
1320 case VELOCITY_INIT_WOL:
1322 netif_stop_queue(vptr->dev);
1325 * Reset RX to prevent RX pointer not on the 4X location
1327 velocity_rx_reset(vptr);
1328 mac_rx_queue_run(regs);
1329 mac_rx_queue_wake(regs);
1331 mii_status = velocity_get_opt_media_mode(vptr);
1332 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1333 velocity_print_link_status(vptr);
1334 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1335 netif_wake_queue(vptr->dev);
1338 enable_flow_control_ability(vptr);
1340 mac_clear_isr(regs);
1341 writel(CR0_STOP, ®s->CR0Clr);
1342 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1347 case VELOCITY_INIT_COLD:
1352 velocity_soft_reset(vptr);
1355 mac_eeprom_reload(regs);
1356 for (i = 0; i < 6; i++)
1357 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
1360 * clear Pre_ACPI bit.
1362 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
1363 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
1364 mac_set_dma_length(regs, vptr->options.DMA_length);
1366 writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet);
1368 * Back off algorithm use original IEEE standard
1370 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB);
1375 velocity_init_cam_filter(vptr);
1378 * Set packet filter: Receive directed and broadcast address
1380 velocity_set_multi(vptr->dev);
1383 * Enable MII auto-polling
1385 enable_mii_autopoll(regs);
1387 setup_adaptive_interrupts(vptr);
1389 writel(vptr->rx.pool_dma, ®s->RDBaseLo);
1390 writew(vptr->options.numrx - 1, ®s->RDCSize);
1391 mac_rx_queue_run(regs);
1392 mac_rx_queue_wake(regs);
1394 writew(vptr->options.numtx - 1, ®s->TDCSize);
1396 for (i = 0; i < vptr->tx.numq; i++) {
1397 writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]);
1398 mac_tx_queue_run(regs, i);
1401 init_flow_control_register(vptr);
1403 writel(CR0_STOP, ®s->CR0Clr);
1404 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set);
1406 mii_status = velocity_get_opt_media_mode(vptr);
1407 netif_stop_queue(vptr->dev);
1409 mii_init(vptr, mii_status);
1411 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
1412 velocity_print_link_status(vptr);
1413 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
1414 netif_wake_queue(vptr->dev);
1417 enable_flow_control_ability(vptr);
1418 mac_hw_mibs_init(regs);
1419 mac_write_int_mask(vptr->int_mask, regs);
1420 mac_clear_isr(regs);
1425 static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1427 struct mac_regs __iomem *regs = vptr->mac_regs;
1428 int avail, dirty, unusable;
1431 * RD number must be equal to 4X per hardware spec
1432 * (programming guide rev 1.20, p.13)
1434 if (vptr->rx.filled < 4)
1439 unusable = vptr->rx.filled & 0x0003;
1440 dirty = vptr->rx.dirty - unusable;
1441 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1442 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1443 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1446 writew(vptr->rx.filled & 0xfffc, ®s->RBRDU);
1447 vptr->rx.filled = unusable;
1451 * velocity_init_dma_rings - set up DMA rings
1452 * @vptr: Velocity to set up
1454 * Allocate PCI mapped DMA rings for the receive and transmit layer
1457 static int velocity_init_dma_rings(struct velocity_info *vptr)
1459 struct velocity_opt *opt = &vptr->options;
1460 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1461 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1462 struct pci_dev *pdev = vptr->pdev;
1463 dma_addr_t pool_dma;
1468 * Allocate all RD/TD rings a single pool.
1470 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1473 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
1474 rx_ring_size, &pool_dma);
1476 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1481 vptr->rx.ring = pool;
1482 vptr->rx.pool_dma = pool_dma;
1484 pool += rx_ring_size;
1485 pool_dma += rx_ring_size;
1487 for (i = 0; i < vptr->tx.numq; i++) {
1488 vptr->tx.rings[i] = pool;
1489 vptr->tx.pool_dma[i] = pool_dma;
1490 pool += tx_ring_size;
1491 pool_dma += tx_ring_size;
1497 static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1499 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
1503 * velocity_alloc_rx_buf - allocate aligned receive buffer
1507 * Allocate a new full sized buffer for the reception of a frame and
1508 * map it into PCI space for the hardware to use. The hardware
1509 * requires *64* byte alignment of the buffer which makes life
1510 * less fun than would be ideal.
1512 static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1514 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1515 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1517 rd_info->skb = netdev_alloc_skb(vptr->dev, vptr->rx.buf_sz + 64);
1518 if (rd_info->skb == NULL)
1522 * Do the gymnastics to get the buffer head for data at
1525 skb_reserve(rd_info->skb,
1526 64 - ((unsigned long) rd_info->skb->data & 63));
1527 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1528 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1531 * Fill in the descriptor to match
1534 *((u32 *) & (rd->rdesc0)) = 0;
1535 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1536 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1542 static int velocity_rx_refill(struct velocity_info *vptr)
1544 int dirty = vptr->rx.dirty, done = 0;
1547 struct rx_desc *rd = vptr->rx.ring + dirty;
1549 /* Fine for an all zero Rx desc at init time as well */
1550 if (rd->rdesc0.len & OWNED_BY_NIC)
1553 if (!vptr->rx.info[dirty].skb) {
1554 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1558 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1559 } while (dirty != vptr->rx.curr);
1562 vptr->rx.dirty = dirty;
1563 vptr->rx.filled += done;
1570 * velocity_free_rd_ring - free receive ring
1571 * @vptr: velocity to clean up
1573 * Free the receive buffers for each ring slot and any
1574 * attached socket buffers that need to go away.
1576 static void velocity_free_rd_ring(struct velocity_info *vptr)
1580 if (vptr->rx.info == NULL)
1583 for (i = 0; i < vptr->options.numrx; i++) {
1584 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1585 struct rx_desc *rd = vptr->rx.ring + i;
1587 memset(rd, 0, sizeof(*rd));
1591 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1592 PCI_DMA_FROMDEVICE);
1593 rd_info->skb_dma = 0;
1595 dev_kfree_skb(rd_info->skb);
1596 rd_info->skb = NULL;
1599 kfree(vptr->rx.info);
1600 vptr->rx.info = NULL;
1604 * velocity_init_rd_ring - set up receive ring
1605 * @vptr: velocity to configure
1607 * Allocate and set up the receive buffers for each ring slot and
1608 * assign them to the network adapter.
1610 static int velocity_init_rd_ring(struct velocity_info *vptr)
1614 vptr->rx.info = kcalloc(vptr->options.numrx,
1615 sizeof(struct velocity_rd_info), GFP_KERNEL);
1619 velocity_init_rx_ring_indexes(vptr);
1621 if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1622 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1623 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1624 velocity_free_rd_ring(vptr);
1634 * velocity_init_td_ring - set up transmit ring
1637 * Set up the transmit ring and chain the ring pointers together.
1638 * Returns zero on success or a negative posix errno code for
1641 static int velocity_init_td_ring(struct velocity_info *vptr)
1645 /* Init the TD ring entries */
1646 for (j = 0; j < vptr->tx.numq; j++) {
1648 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
1649 sizeof(struct velocity_td_info),
1651 if (!vptr->tx.infos[j]) {
1653 kfree(vptr->tx.infos[j]);
1657 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1663 * velocity_free_dma_rings - free PCI ring pointers
1664 * @vptr: Velocity to free from
1666 * Clean up the PCI ring buffers allocated to this velocity.
1668 static void velocity_free_dma_rings(struct velocity_info *vptr)
1670 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
1671 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1673 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1676 static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1680 velocity_set_rxbufsize(vptr, mtu);
1682 ret = velocity_init_dma_rings(vptr);
1686 ret = velocity_init_rd_ring(vptr);
1688 goto err_free_dma_rings_0;
1690 ret = velocity_init_td_ring(vptr);
1692 goto err_free_rd_ring_1;
1697 velocity_free_rd_ring(vptr);
1698 err_free_dma_rings_0:
1699 velocity_free_dma_rings(vptr);
1704 * velocity_free_tx_buf - free transmit buffer
1708 * Release an transmit buffer. If the buffer was preallocated then
1709 * recycle it, if not then unmap the buffer.
1711 static void velocity_free_tx_buf(struct velocity_info *vptr,
1712 struct velocity_td_info *tdinfo, struct tx_desc *td)
1714 struct sk_buff *skb = tdinfo->skb;
1717 * Don't unmap the pre-allocated tx_bufs
1719 if (tdinfo->skb_dma) {
1722 for (i = 0; i < tdinfo->nskb_dma; i++) {
1723 size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN);
1725 /* For scatter-gather */
1726 if (skb_shinfo(skb)->nr_frags > 0)
1727 pktlen = max_t(size_t, pktlen,
1728 td->td_buf[i].size & ~TD_QUEUE);
1730 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i],
1731 le16_to_cpu(pktlen), PCI_DMA_TODEVICE);
1734 dev_kfree_skb_irq(skb);
1739 * FIXME: could we merge this with velocity_free_tx_buf ?
1741 static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1744 struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]);
1747 if (td_info == NULL)
1751 for (i = 0; i < td_info->nskb_dma; i++) {
1752 if (td_info->skb_dma[i]) {
1753 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1754 td_info->skb->len, PCI_DMA_TODEVICE);
1755 td_info->skb_dma[i] = 0;
1758 dev_kfree_skb(td_info->skb);
1759 td_info->skb = NULL;
1764 * velocity_free_td_ring - free td ring
1767 * Free up the transmit ring for this particular velocity adapter.
1768 * We free the ring contents but not the ring itself.
1770 static void velocity_free_td_ring(struct velocity_info *vptr)
1774 for (j = 0; j < vptr->tx.numq; j++) {
1775 if (vptr->tx.infos[j] == NULL)
1777 for (i = 0; i < vptr->options.numtx; i++)
1778 velocity_free_td_ring_entry(vptr, j, i);
1780 kfree(vptr->tx.infos[j]);
1781 vptr->tx.infos[j] = NULL;
1785 static void velocity_free_rings(struct velocity_info *vptr)
1787 velocity_free_td_ring(vptr);
1788 velocity_free_rd_ring(vptr);
1789 velocity_free_dma_rings(vptr);
1793 * velocity_error - handle error from controller
1795 * @status: card status
1797 * Process an error report from the hardware and attempt to recover
1798 * the card itself. At the moment we cannot recover from some
1799 * theoretically impossible errors but this could be fixed using
1800 * the pci_device_failed logic to bounce the hardware
1803 static void velocity_error(struct velocity_info *vptr, int status)
1806 if (status & ISR_TXSTLI) {
1807 struct mac_regs __iomem *regs = vptr->mac_regs;
1809 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0]));
1810 BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR);
1811 writew(TRDCSR_RUN, ®s->TDCSRClr);
1812 netif_stop_queue(vptr->dev);
1814 /* FIXME: port over the pci_device_failed code and use it
1818 if (status & ISR_SRCI) {
1819 struct mac_regs __iomem *regs = vptr->mac_regs;
1822 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1823 vptr->mii_status = check_connection_type(regs);
1826 * If it is a 3119, disable frame bursting in
1827 * halfduplex mode and enable it in fullduplex
1830 if (vptr->rev_id < REV_ID_VT3216_A0) {
1831 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1832 BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR);
1834 BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR);
1837 * Only enable CD heart beat counter in 10HD mode
1839 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10))
1840 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG);
1842 BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG);
1844 setup_queue_timers(vptr);
1847 * Get link status from PHYSR0
1849 linked = readb(®s->PHYSR0) & PHYSR0_LINKGD;
1852 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
1853 netif_carrier_on(vptr->dev);
1855 vptr->mii_status |= VELOCITY_LINK_FAIL;
1856 netif_carrier_off(vptr->dev);
1859 velocity_print_link_status(vptr);
1860 enable_flow_control_ability(vptr);
1863 * Re-enable auto-polling because SRCI will disable
1867 enable_mii_autopoll(regs);
1869 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1870 netif_stop_queue(vptr->dev);
1872 netif_wake_queue(vptr->dev);
1875 if (status & ISR_MIBFI)
1876 velocity_update_hw_mibs(vptr);
1877 if (status & ISR_LSTEI)
1878 mac_rx_queue_wake(vptr->mac_regs);
1882 * tx_srv - transmit interrupt service
1885 * Scan the queues looking for transmitted packets that
1886 * we can complete and clean up. Update any statistics as
1889 static int velocity_tx_srv(struct velocity_info *vptr)
1896 struct velocity_td_info *tdinfo;
1897 struct net_device_stats *stats = &vptr->dev->stats;
1899 for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1900 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1901 idx = (idx + 1) % vptr->options.numtx) {
1906 td = &(vptr->tx.rings[qnum][idx]);
1907 tdinfo = &(vptr->tx.infos[qnum][idx]);
1909 if (td->tdesc0.len & OWNED_BY_NIC)
1915 if (td->tdesc0.TSR & TSR0_TERR) {
1917 stats->tx_dropped++;
1918 if (td->tdesc0.TSR & TSR0_CDH)
1919 stats->tx_heartbeat_errors++;
1920 if (td->tdesc0.TSR & TSR0_CRS)
1921 stats->tx_carrier_errors++;
1922 if (td->tdesc0.TSR & TSR0_ABT)
1923 stats->tx_aborted_errors++;
1924 if (td->tdesc0.TSR & TSR0_OWC)
1925 stats->tx_window_errors++;
1927 stats->tx_packets++;
1928 stats->tx_bytes += tdinfo->skb->len;
1930 velocity_free_tx_buf(vptr, tdinfo, td);
1931 vptr->tx.used[qnum]--;
1933 vptr->tx.tail[qnum] = idx;
1935 if (AVAIL_TD(vptr, qnum) < 1)
1939 * Look to see if we should kick the transmit network
1940 * layer for more work.
1942 if (netif_queue_stopped(vptr->dev) && (full == 0) &&
1943 (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1944 netif_wake_queue(vptr->dev);
1950 * velocity_rx_csum - checksum process
1951 * @rd: receive packet descriptor
1952 * @skb: network layer packet buffer
1954 * Process the status bits for the received packet and determine
1955 * if the checksum was computed and verified by the hardware
1957 static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1959 skb_checksum_none_assert(skb);
1961 if (rd->rdesc1.CSM & CSM_IPKT) {
1962 if (rd->rdesc1.CSM & CSM_IPOK) {
1963 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1964 (rd->rdesc1.CSM & CSM_UDPKT)) {
1965 if (!(rd->rdesc1.CSM & CSM_TUPOK))
1968 skb->ip_summed = CHECKSUM_UNNECESSARY;
1974 * velocity_rx_copy - in place Rx copy for small packets
1975 * @rx_skb: network layer packet buffer candidate
1976 * @pkt_size: received data size
1977 * @rd: receive packet descriptor
1978 * @dev: network device
1980 * Replace the current skb that is scheduled for Rx processing by a
1981 * shorter, immediately allocated skb, if the received packet is small
1982 * enough. This function returns a negative value if the received
1983 * packet is too big or if memory is exhausted.
1985 static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1986 struct velocity_info *vptr)
1989 if (pkt_size < rx_copybreak) {
1990 struct sk_buff *new_skb;
1992 new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size);
1994 new_skb->ip_summed = rx_skb[0]->ip_summed;
1995 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
2005 * velocity_iph_realign - IP header alignment
2006 * @vptr: velocity we are handling
2007 * @skb: network layer packet buffer
2008 * @pkt_size: received data size
2010 * Align IP header on a 2 bytes boundary. This behavior can be
2011 * configured by the user.
2013 static inline void velocity_iph_realign(struct velocity_info *vptr,
2014 struct sk_buff *skb, int pkt_size)
2016 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
2017 memmove(skb->data + 2, skb->data, pkt_size);
2018 skb_reserve(skb, 2);
2023 * velocity_receive_frame - received packet processor
2024 * @vptr: velocity we are handling
2027 * A packet has arrived. We process the packet and if appropriate
2028 * pass the frame up the network stack
2030 static int velocity_receive_frame(struct velocity_info *vptr, int idx)
2032 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
2033 struct net_device_stats *stats = &vptr->dev->stats;
2034 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
2035 struct rx_desc *rd = &(vptr->rx.ring[idx]);
2036 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
2037 struct sk_buff *skb;
2039 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
2040 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
2041 stats->rx_length_errors++;
2045 if (rd->rdesc0.RSR & RSR_MAR)
2050 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
2051 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
2054 * Drop frame not meeting IEEE 802.3
2057 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
2058 if (rd->rdesc0.RSR & RSR_RL) {
2059 stats->rx_length_errors++;
2064 pci_action = pci_dma_sync_single_for_device;
2066 velocity_rx_csum(rd, skb);
2068 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
2069 velocity_iph_realign(vptr, skb, pkt_len);
2070 pci_action = pci_unmap_single;
2071 rd_info->skb = NULL;
2074 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
2075 PCI_DMA_FROMDEVICE);
2077 skb_put(skb, pkt_len - 4);
2078 skb->protocol = eth_type_trans(skb, vptr->dev);
2080 if (rd->rdesc0.RSR & RSR_DETAG) {
2081 u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG));
2083 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
2087 stats->rx_bytes += pkt_len;
2088 stats->rx_packets++;
2094 * velocity_rx_srv - service RX interrupt
2097 * Walk the receive ring of the velocity adapter and remove
2098 * any received packets from the receive queue. Hand the ring
2099 * slots back to the adapter for reuse.
2101 static int velocity_rx_srv(struct velocity_info *vptr, int budget_left)
2103 struct net_device_stats *stats = &vptr->dev->stats;
2104 int rd_curr = vptr->rx.curr;
2107 while (works < budget_left) {
2108 struct rx_desc *rd = vptr->rx.ring + rd_curr;
2110 if (!vptr->rx.info[rd_curr].skb)
2113 if (rd->rdesc0.len & OWNED_BY_NIC)
2119 * Don't drop CE or RL error frame although RXOK is off
2121 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
2122 if (velocity_receive_frame(vptr, rd_curr) < 0)
2123 stats->rx_dropped++;
2125 if (rd->rdesc0.RSR & RSR_CRC)
2126 stats->rx_crc_errors++;
2127 if (rd->rdesc0.RSR & RSR_FAE)
2128 stats->rx_frame_errors++;
2130 stats->rx_dropped++;
2133 rd->size |= RX_INTEN;
2136 if (rd_curr >= vptr->options.numrx)
2141 vptr->rx.curr = rd_curr;
2143 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
2144 velocity_give_many_rx_descs(vptr);
2150 static int velocity_poll(struct napi_struct *napi, int budget)
2152 struct velocity_info *vptr = container_of(napi,
2153 struct velocity_info, napi);
2154 unsigned int rx_done;
2155 unsigned long flags;
2157 spin_lock_irqsave(&vptr->lock, flags);
2159 * Do rx and tx twice for performance (taken from the VIA
2160 * out-of-tree driver).
2162 rx_done = velocity_rx_srv(vptr, budget / 2);
2163 velocity_tx_srv(vptr);
2164 rx_done += velocity_rx_srv(vptr, budget - rx_done);
2165 velocity_tx_srv(vptr);
2167 /* If budget not fully consumed, exit the polling mode */
2168 if (rx_done < budget) {
2169 napi_complete(napi);
2170 mac_enable_int(vptr->mac_regs);
2172 spin_unlock_irqrestore(&vptr->lock, flags);
2178 * velocity_intr - interrupt callback
2179 * @irq: interrupt number
2180 * @dev_instance: interrupting device
2182 * Called whenever an interrupt is generated by the velocity
2183 * adapter IRQ line. We may not be the source of the interrupt
2184 * and need to identify initially if we are, and if not exit as
2185 * efficiently as possible.
2187 static irqreturn_t velocity_intr(int irq, void *dev_instance)
2189 struct net_device *dev = dev_instance;
2190 struct velocity_info *vptr = netdev_priv(dev);
2193 spin_lock(&vptr->lock);
2194 isr_status = mac_read_isr(vptr->mac_regs);
2197 if (isr_status == 0) {
2198 spin_unlock(&vptr->lock);
2202 /* Ack the interrupt */
2203 mac_write_isr(vptr->mac_regs, isr_status);
2205 if (likely(napi_schedule_prep(&vptr->napi))) {
2206 mac_disable_int(vptr->mac_regs);
2207 __napi_schedule(&vptr->napi);
2210 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2211 velocity_error(vptr, isr_status);
2213 spin_unlock(&vptr->lock);
2219 * velocity_open - interface activation callback
2220 * @dev: network layer device to open
2222 * Called when the network layer brings the interface up. Returns
2223 * a negative posix error code on failure, or zero on success.
2225 * All the ring allocation and set up is done on open for this
2226 * adapter to minimise memory usage when inactive
2228 static int velocity_open(struct net_device *dev)
2230 struct velocity_info *vptr = netdev_priv(dev);
2233 ret = velocity_init_rings(vptr, dev->mtu);
2237 /* Ensure chip is running */
2238 pci_set_power_state(vptr->pdev, PCI_D0);
2240 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2242 ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED,
2245 /* Power down the chip */
2246 pci_set_power_state(vptr->pdev, PCI_D3hot);
2247 velocity_free_rings(vptr);
2251 velocity_give_many_rx_descs(vptr);
2253 mac_enable_int(vptr->mac_regs);
2254 netif_start_queue(dev);
2255 napi_enable(&vptr->napi);
2256 vptr->flags |= VELOCITY_FLAGS_OPENED;
2262 * velocity_shutdown - shut down the chip
2263 * @vptr: velocity to deactivate
2265 * Shuts down the internal operations of the velocity and
2266 * disables interrupts, autopolling, transmit and receive
2268 static void velocity_shutdown(struct velocity_info *vptr)
2270 struct mac_regs __iomem *regs = vptr->mac_regs;
2271 mac_disable_int(regs);
2272 writel(CR0_STOP, ®s->CR0Set);
2273 writew(0xFFFF, ®s->TDCSRClr);
2274 writeb(0xFF, ®s->RDCSRClr);
2275 safe_disable_mii_autopoll(regs);
2276 mac_clear_isr(regs);
2280 * velocity_change_mtu - MTU change callback
2281 * @dev: network device
2282 * @new_mtu: desired MTU
2284 * Handle requests from the networking layer for MTU change on
2285 * this interface. It gets called on a change by the network layer.
2286 * Return zero for success or negative posix error code.
2288 static int velocity_change_mtu(struct net_device *dev, int new_mtu)
2290 struct velocity_info *vptr = netdev_priv(dev);
2293 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
2294 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
2300 if (!netif_running(dev)) {
2305 if (dev->mtu != new_mtu) {
2306 struct velocity_info *tmp_vptr;
2307 unsigned long flags;
2311 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
2317 tmp_vptr->dev = dev;
2318 tmp_vptr->pdev = vptr->pdev;
2319 tmp_vptr->options = vptr->options;
2320 tmp_vptr->tx.numq = vptr->tx.numq;
2322 ret = velocity_init_rings(tmp_vptr, new_mtu);
2324 goto out_free_tmp_vptr_1;
2326 spin_lock_irqsave(&vptr->lock, flags);
2328 netif_stop_queue(dev);
2329 velocity_shutdown(vptr);
2334 vptr->rx = tmp_vptr->rx;
2335 vptr->tx = tmp_vptr->tx;
2342 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2344 velocity_give_many_rx_descs(vptr);
2346 mac_enable_int(vptr->mac_regs);
2347 netif_start_queue(dev);
2349 spin_unlock_irqrestore(&vptr->lock, flags);
2351 velocity_free_rings(tmp_vptr);
2353 out_free_tmp_vptr_1:
2361 * velocity_mii_ioctl - MII ioctl handler
2362 * @dev: network device
2363 * @ifr: the ifreq block for the ioctl
2366 * Process MII requests made via ioctl from the network layer. These
2367 * are used by tools like kudzu to interrogate the link state of the
2370 static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2372 struct velocity_info *vptr = netdev_priv(dev);
2373 struct mac_regs __iomem *regs = vptr->mac_regs;
2374 unsigned long flags;
2375 struct mii_ioctl_data *miidata = if_mii(ifr);
2380 miidata->phy_id = readb(®s->MIIADR) & 0x1f;
2383 if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
2387 spin_lock_irqsave(&vptr->lock, flags);
2388 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
2389 spin_unlock_irqrestore(&vptr->lock, flags);
2390 check_connection_type(vptr->mac_regs);
2401 * velocity_ioctl - ioctl entry point
2402 * @dev: network device
2403 * @rq: interface request ioctl
2404 * @cmd: command code
2406 * Called when the user issues an ioctl request to the network
2407 * device in question. The velocity interface supports MII.
2409 static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2411 struct velocity_info *vptr = netdev_priv(dev);
2414 /* If we are asked for information and the device is power
2415 saving then we need to bring the device back up to talk to it */
2417 if (!netif_running(dev))
2418 pci_set_power_state(vptr->pdev, PCI_D0);
2421 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2422 case SIOCGMIIREG: /* Read MII PHY register. */
2423 case SIOCSMIIREG: /* Write to MII PHY register. */
2424 ret = velocity_mii_ioctl(dev, rq, cmd);
2430 if (!netif_running(dev))
2431 pci_set_power_state(vptr->pdev, PCI_D3hot);
2438 * velocity_get_status - statistics callback
2439 * @dev: network device
2441 * Callback from the network layer to allow driver statistics
2442 * to be resynchronized with hardware collected state. In the
2443 * case of the velocity we need to pull the MIB counters from
2444 * the hardware into the counters before letting the network
2445 * layer display them.
2447 static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2449 struct velocity_info *vptr = netdev_priv(dev);
2451 /* If the hardware is down, don't touch MII */
2452 if (!netif_running(dev))
2455 spin_lock_irq(&vptr->lock);
2456 velocity_update_hw_mibs(vptr);
2457 spin_unlock_irq(&vptr->lock);
2459 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2460 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2461 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2463 // unsigned long rx_dropped; /* no space in linux buffers */
2464 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2465 /* detailed rx_errors: */
2466 // unsigned long rx_length_errors;
2467 // unsigned long rx_over_errors; /* receiver ring buff overflow */
2468 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2469 // unsigned long rx_frame_errors; /* recv'd frame alignment error */
2470 // unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2471 // unsigned long rx_missed_errors; /* receiver missed packet */
2473 /* detailed tx_errors */
2474 // unsigned long tx_fifo_errors;
2480 * velocity_close - close adapter callback
2481 * @dev: network device
2483 * Callback from the network layer when the velocity is being
2484 * deactivated by the network layer
2486 static int velocity_close(struct net_device *dev)
2488 struct velocity_info *vptr = netdev_priv(dev);
2490 napi_disable(&vptr->napi);
2491 netif_stop_queue(dev);
2492 velocity_shutdown(vptr);
2494 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2495 velocity_get_ip(vptr);
2497 free_irq(vptr->pdev->irq, dev);
2499 velocity_free_rings(vptr);
2501 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2506 * velocity_xmit - transmit packet callback
2507 * @skb: buffer to transmit
2508 * @dev: network device
2510 * Called by the networ layer to request a packet is queued to
2511 * the velocity. Returns zero on success.
2513 static netdev_tx_t velocity_xmit(struct sk_buff *skb,
2514 struct net_device *dev)
2516 struct velocity_info *vptr = netdev_priv(dev);
2518 struct tx_desc *td_ptr;
2519 struct velocity_td_info *tdinfo;
2520 unsigned long flags;
2525 if (skb_padto(skb, ETH_ZLEN))
2528 /* The hardware can handle at most 7 memory segments, so merge
2529 * the skb if there are more */
2530 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2532 return NETDEV_TX_OK;
2535 pktlen = skb_shinfo(skb)->nr_frags == 0 ?
2536 max_t(unsigned int, skb->len, ETH_ZLEN) :
2539 spin_lock_irqsave(&vptr->lock, flags);
2541 index = vptr->tx.curr[qnum];
2542 td_ptr = &(vptr->tx.rings[qnum][index]);
2543 tdinfo = &(vptr->tx.infos[qnum][index]);
2545 td_ptr->tdesc1.TCR = TCR0_TIC;
2546 td_ptr->td_buf[0].size &= ~TD_QUEUE;
2549 * Map the linear network buffer into PCI space and
2550 * add it to the transmit ring.
2553 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
2554 td_ptr->tdesc0.len = cpu_to_le16(pktlen);
2555 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2556 td_ptr->td_buf[0].pa_high = 0;
2557 td_ptr->td_buf[0].size = cpu_to_le16(pktlen);
2559 /* Handle fragments */
2560 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2561 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2563 tdinfo->skb_dma[i + 1] = skb_frag_dma_map(&vptr->pdev->dev,
2565 skb_frag_size(frag),
2568 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2569 td_ptr->td_buf[i + 1].pa_high = 0;
2570 td_ptr->td_buf[i + 1].size = cpu_to_le16(skb_frag_size(frag));
2572 tdinfo->nskb_dma = i + 1;
2574 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
2576 if (vlan_tx_tag_present(skb)) {
2577 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2578 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2582 * Handle hardware checksum
2584 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2585 const struct iphdr *ip = ip_hdr(skb);
2586 if (ip->protocol == IPPROTO_TCP)
2587 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2588 else if (ip->protocol == IPPROTO_UDP)
2589 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2590 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2595 prev = vptr->options.numtx - 1;
2596 td_ptr->tdesc0.len |= OWNED_BY_NIC;
2597 vptr->tx.used[qnum]++;
2598 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
2600 if (AVAIL_TD(vptr, qnum) < 1)
2601 netif_stop_queue(dev);
2603 td_ptr = &(vptr->tx.rings[qnum][prev]);
2604 td_ptr->td_buf[0].size |= TD_QUEUE;
2605 mac_tx_queue_wake(vptr->mac_regs, qnum);
2607 spin_unlock_irqrestore(&vptr->lock, flags);
2609 return NETDEV_TX_OK;
2612 static const struct net_device_ops velocity_netdev_ops = {
2613 .ndo_open = velocity_open,
2614 .ndo_stop = velocity_close,
2615 .ndo_start_xmit = velocity_xmit,
2616 .ndo_get_stats = velocity_get_stats,
2617 .ndo_validate_addr = eth_validate_addr,
2618 .ndo_set_mac_address = eth_mac_addr,
2619 .ndo_set_rx_mode = velocity_set_multi,
2620 .ndo_change_mtu = velocity_change_mtu,
2621 .ndo_do_ioctl = velocity_ioctl,
2622 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
2623 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
2627 * velocity_init_info - init private data
2629 * @vptr: Velocity info
2632 * Set up the initial velocity_info struct for the device that has been
2635 static void velocity_init_info(struct pci_dev *pdev, struct velocity_info *vptr,
2636 const struct velocity_info_tbl *info)
2638 memset(vptr, 0, sizeof(struct velocity_info));
2641 vptr->chip_id = info->chip_id;
2642 vptr->tx.numq = info->txqueue;
2643 vptr->multicast_limit = MCAM_SIZE;
2644 spin_lock_init(&vptr->lock);
2648 * velocity_get_pci_info - retrieve PCI info for device
2649 * @vptr: velocity device
2650 * @pdev: PCI device it matches
2652 * Retrieve the PCI configuration space data that interests us from
2653 * the kernel PCI layer
2655 static int velocity_get_pci_info(struct velocity_info *vptr,
2656 struct pci_dev *pdev)
2658 vptr->rev_id = pdev->revision;
2660 pci_set_master(pdev);
2662 vptr->ioaddr = pci_resource_start(pdev, 0);
2663 vptr->memaddr = pci_resource_start(pdev, 1);
2665 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
2667 "region #0 is not an I/O resource, aborting.\n");
2671 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
2673 "region #1 is an I/O resource, aborting.\n");
2677 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
2678 dev_err(&pdev->dev, "region #1 is too small.\n");
2687 * velocity_print_info - per driver data
2690 * Print per driver data as the kernel driver finds Velocity
2693 static void velocity_print_info(struct velocity_info *vptr)
2695 struct net_device *dev = vptr->dev;
2697 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
2698 printk(KERN_INFO "%s: Ethernet Address: %pM\n",
2699 dev->name, dev->dev_addr);
2702 static u32 velocity_get_link(struct net_device *dev)
2704 struct velocity_info *vptr = netdev_priv(dev);
2705 struct mac_regs __iomem *regs = vptr->mac_regs;
2706 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0;
2710 * velocity_found1 - set up discovered velocity card
2712 * @ent: PCI device table entry that matched
2714 * Configure a discovered adapter from scratch. Return a negative
2715 * errno error code on failure paths.
2717 static int velocity_found1(struct pci_dev *pdev,
2718 const struct pci_device_id *ent)
2720 static int first = 1;
2721 struct net_device *dev;
2723 const char *drv_string;
2724 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
2725 struct velocity_info *vptr;
2726 struct mac_regs __iomem *regs;
2729 /* FIXME: this driver, like almost all other ethernet drivers,
2730 * can support more than MAX_UNITS.
2732 if (velocity_nics >= MAX_UNITS) {
2733 dev_notice(&pdev->dev, "already found %d NICs.\n",
2738 dev = alloc_etherdev(sizeof(struct velocity_info));
2742 /* Chain it all together */
2744 SET_NETDEV_DEV(dev, &pdev->dev);
2745 vptr = netdev_priv(dev);
2749 printk(KERN_INFO "%s Ver. %s\n",
2750 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
2751 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
2752 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
2756 velocity_init_info(pdev, vptr, info);
2760 ret = pci_enable_device(pdev);
2764 ret = velocity_get_pci_info(vptr, pdev);
2766 /* error message already printed */
2770 ret = pci_request_regions(pdev, VELOCITY_NAME);
2772 dev_err(&pdev->dev, "No PCI resources.\n");
2776 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
2779 goto err_release_res;
2782 vptr->mac_regs = regs;
2784 mac_wol_reset(regs);
2786 for (i = 0; i < 6; i++)
2787 dev->dev_addr[i] = readb(®s->PAR[i]);
2790 drv_string = dev_driver_string(&pdev->dev);
2792 velocity_get_options(&vptr->options, velocity_nics, drv_string);
2795 * Mask out the options cannot be set to the chip
2798 vptr->options.flags &= info->flags;
2801 * Enable the chip specified capbilities
2804 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
2806 vptr->wol_opts = vptr->options.wol_opts;
2807 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2809 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
2811 dev->netdev_ops = &velocity_netdev_ops;
2812 dev->ethtool_ops = &velocity_ethtool_ops;
2813 netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT);
2815 dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG |
2816 NETIF_F_HW_VLAN_CTAG_TX;
2817 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_FILTER |
2818 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_IP_CSUM;
2820 ret = register_netdev(dev);
2824 if (!velocity_get_link(dev)) {
2825 netif_carrier_off(dev);
2826 vptr->mii_status |= VELOCITY_LINK_FAIL;
2829 velocity_print_info(vptr);
2830 pci_set_drvdata(pdev, dev);
2832 /* and leave the chip powered down */
2834 pci_set_power_state(pdev, PCI_D3hot);
2842 pci_release_regions(pdev);
2844 pci_disable_device(pdev);
2852 * wol_calc_crc - WOL CRC
2853 * @pattern: data pattern
2854 * @mask_pattern: mask
2856 * Compute the wake on lan crc hashes for the packet header
2857 * we are interested in.
2859 static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern)
2865 for (i = 0; i < size; i++) {
2866 mask = mask_pattern[i];
2868 /* Skip this loop if the mask equals to zero */
2872 for (j = 0; j < 8; j++) {
2873 if ((mask & 0x01) == 0) {
2878 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
2881 /* Finally, invert the result once to get the correct data */
2883 return bitrev32(crc) >> 16;
2887 * velocity_set_wol - set up for wake on lan
2888 * @vptr: velocity to set WOL status on
2890 * Set a card up for wake on lan either by unicast or by
2893 * FIXME: check static buffer is safe here
2895 static int velocity_set_wol(struct velocity_info *vptr)
2897 struct mac_regs __iomem *regs = vptr->mac_regs;
2898 enum speed_opt spd_dpx = vptr->options.spd_dpx;
2902 static u32 mask_pattern[2][4] = {
2903 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
2904 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
2907 writew(0xFFFF, ®s->WOLCRClr);
2908 writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet);
2909 writew(WOLCR_MAGIC_EN, ®s->WOLCRSet);
2912 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2913 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet);
2916 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2917 writew(WOLCR_UNICAST_EN, ®s->WOLCRSet);
2919 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
2920 struct arp_packet *arp = (struct arp_packet *) buf;
2922 memset(buf, 0, sizeof(struct arp_packet) + 7);
2924 for (i = 0; i < 4; i++)
2925 writel(mask_pattern[0][i], ®s->ByteMask[0][i]);
2927 arp->type = htons(ETH_P_ARP);
2928 arp->ar_op = htons(1);
2930 memcpy(arp->ar_tip, vptr->ip_addr, 4);
2932 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
2933 (u8 *) & mask_pattern[0][0]);
2935 writew(crc, ®s->PatternCRC[0]);
2936 writew(WOLCR_ARP_EN, ®s->WOLCRSet);
2939 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet);
2940 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet);
2942 writew(0x0FFF, ®s->WOLSRClr);
2944 if (spd_dpx == SPD_DPX_1000_FULL)
2947 if (spd_dpx != SPD_DPX_AUTO)
2948 goto advertise_done;
2950 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
2951 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
2952 MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs);
2954 MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs);
2957 if (vptr->mii_status & VELOCITY_SPEED_1000)
2958 MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs);
2961 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR);
2965 GCR = readb(®s->CHIPGCR);
2966 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
2967 writeb(GCR, ®s->CHIPGCR);
2971 BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR);
2972 /* Turn on SWPTAG just before entering power mode */
2973 BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW);
2974 /* Go to bed ..... */
2975 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW);
2981 * velocity_save_context - save registers
2983 * @context: buffer for stored context
2985 * Retrieve the current configuration from the velocity hardware
2986 * and stash it in the context structure, for use by the context
2987 * restore functions. This allows us to save things we need across
2990 static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context)
2992 struct mac_regs __iomem *regs = vptr->mac_regs;
2994 u8 __iomem *ptr = (u8 __iomem *)regs;
2996 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
2997 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
2999 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3000 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3002 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3003 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3007 static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3009 struct net_device *dev = pci_get_drvdata(pdev);
3010 struct velocity_info *vptr = netdev_priv(dev);
3011 unsigned long flags;
3013 if (!netif_running(vptr->dev))
3016 netif_device_detach(vptr->dev);
3018 spin_lock_irqsave(&vptr->lock, flags);
3019 pci_save_state(pdev);
3021 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3022 velocity_get_ip(vptr);
3023 velocity_save_context(vptr, &vptr->context);
3024 velocity_shutdown(vptr);
3025 velocity_set_wol(vptr);
3026 pci_enable_wake(pdev, PCI_D3hot, 1);
3027 pci_set_power_state(pdev, PCI_D3hot);
3029 velocity_save_context(vptr, &vptr->context);
3030 velocity_shutdown(vptr);
3031 pci_disable_device(pdev);
3032 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3035 spin_unlock_irqrestore(&vptr->lock, flags);
3040 * velocity_restore_context - restore registers
3042 * @context: buffer for stored context
3044 * Reload the register configuration from the velocity context
3045 * created by velocity_save_context.
3047 static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3049 struct mac_regs __iomem *regs = vptr->mac_regs;
3051 u8 __iomem *ptr = (u8 __iomem *)regs;
3053 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4)
3054 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3057 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3059 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3061 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3064 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4)
3065 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3067 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3068 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3070 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++)
3071 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3074 static int velocity_resume(struct pci_dev *pdev)
3076 struct net_device *dev = pci_get_drvdata(pdev);
3077 struct velocity_info *vptr = netdev_priv(dev);
3078 unsigned long flags;
3081 if (!netif_running(vptr->dev))
3084 pci_set_power_state(pdev, PCI_D0);
3085 pci_enable_wake(pdev, 0, 0);
3086 pci_restore_state(pdev);
3088 mac_wol_reset(vptr->mac_regs);
3090 spin_lock_irqsave(&vptr->lock, flags);
3091 velocity_restore_context(vptr, &vptr->context);
3092 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3093 mac_disable_int(vptr->mac_regs);
3095 velocity_tx_srv(vptr);
3097 for (i = 0; i < vptr->tx.numq; i++) {
3098 if (vptr->tx.used[i])
3099 mac_tx_queue_wake(vptr->mac_regs, i);
3102 mac_enable_int(vptr->mac_regs);
3103 spin_unlock_irqrestore(&vptr->lock, flags);
3104 netif_device_attach(vptr->dev);
3111 * Definition for our device driver. The PCI layer interface
3112 * uses this to handle all our card discover and plugging
3114 static struct pci_driver velocity_driver = {
3115 .name = VELOCITY_NAME,
3116 .id_table = velocity_id_table,
3117 .probe = velocity_found1,
3118 .remove = velocity_remove1,
3120 .suspend = velocity_suspend,
3121 .resume = velocity_resume,
3127 * velocity_ethtool_up - pre hook for ethtool
3128 * @dev: network device
3130 * Called before an ethtool operation. We need to make sure the
3131 * chip is out of D3 state before we poke at it.
3133 static int velocity_ethtool_up(struct net_device *dev)
3135 struct velocity_info *vptr = netdev_priv(dev);
3136 if (!netif_running(dev))
3137 pci_set_power_state(vptr->pdev, PCI_D0);
3142 * velocity_ethtool_down - post hook for ethtool
3143 * @dev: network device
3145 * Called after an ethtool operation. Restore the chip back to D3
3146 * state if it isn't running.
3148 static void velocity_ethtool_down(struct net_device *dev)
3150 struct velocity_info *vptr = netdev_priv(dev);
3151 if (!netif_running(dev))
3152 pci_set_power_state(vptr->pdev, PCI_D3hot);
3155 static int velocity_get_settings(struct net_device *dev,
3156 struct ethtool_cmd *cmd)
3158 struct velocity_info *vptr = netdev_priv(dev);
3159 struct mac_regs __iomem *regs = vptr->mac_regs;
3161 status = check_connection_type(vptr->mac_regs);
3163 cmd->supported = SUPPORTED_TP |
3165 SUPPORTED_10baseT_Half |
3166 SUPPORTED_10baseT_Full |
3167 SUPPORTED_100baseT_Half |
3168 SUPPORTED_100baseT_Full |
3169 SUPPORTED_1000baseT_Half |
3170 SUPPORTED_1000baseT_Full;
3172 cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
3173 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
3175 ADVERTISED_10baseT_Half |
3176 ADVERTISED_10baseT_Full |
3177 ADVERTISED_100baseT_Half |
3178 ADVERTISED_100baseT_Full |
3179 ADVERTISED_1000baseT_Half |
3180 ADVERTISED_1000baseT_Full;
3182 switch (vptr->options.spd_dpx) {
3183 case SPD_DPX_1000_FULL:
3184 cmd->advertising |= ADVERTISED_1000baseT_Full;
3186 case SPD_DPX_100_HALF:
3187 cmd->advertising |= ADVERTISED_100baseT_Half;
3189 case SPD_DPX_100_FULL:
3190 cmd->advertising |= ADVERTISED_100baseT_Full;
3192 case SPD_DPX_10_HALF:
3193 cmd->advertising |= ADVERTISED_10baseT_Half;
3195 case SPD_DPX_10_FULL:
3196 cmd->advertising |= ADVERTISED_10baseT_Full;
3203 if (status & VELOCITY_SPEED_1000)
3204 ethtool_cmd_speed_set(cmd, SPEED_1000);
3205 else if (status & VELOCITY_SPEED_100)
3206 ethtool_cmd_speed_set(cmd, SPEED_100);
3208 ethtool_cmd_speed_set(cmd, SPEED_10);
3210 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3211 cmd->port = PORT_TP;
3212 cmd->transceiver = XCVR_INTERNAL;
3213 cmd->phy_address = readb(®s->MIIADR) & 0x1F;
3215 if (status & VELOCITY_DUPLEX_FULL)
3216 cmd->duplex = DUPLEX_FULL;
3218 cmd->duplex = DUPLEX_HALF;
3223 static int velocity_set_settings(struct net_device *dev,
3224 struct ethtool_cmd *cmd)
3226 struct velocity_info *vptr = netdev_priv(dev);
3227 u32 speed = ethtool_cmd_speed(cmd);
3232 curr_status = check_connection_type(vptr->mac_regs);
3233 curr_status &= (~VELOCITY_LINK_FAIL);
3235 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3236 new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0);
3237 new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3238 new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3239 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3241 if ((new_status & VELOCITY_AUTONEG_ENABLE) &&
3242 (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) {
3245 enum speed_opt spd_dpx;
3247 if (new_status & VELOCITY_AUTONEG_ENABLE)
3248 spd_dpx = SPD_DPX_AUTO;
3249 else if ((new_status & VELOCITY_SPEED_1000) &&
3250 (new_status & VELOCITY_DUPLEX_FULL)) {
3251 spd_dpx = SPD_DPX_1000_FULL;
3252 } else if (new_status & VELOCITY_SPEED_100)
3253 spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3254 SPD_DPX_100_FULL : SPD_DPX_100_HALF;
3255 else if (new_status & VELOCITY_SPEED_10)
3256 spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ?
3257 SPD_DPX_10_FULL : SPD_DPX_10_HALF;
3261 vptr->options.spd_dpx = spd_dpx;
3263 velocity_set_media_mode(vptr, new_status);
3269 static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3271 struct velocity_info *vptr = netdev_priv(dev);
3272 strlcpy(info->driver, VELOCITY_NAME, sizeof(info->driver));
3273 strlcpy(info->version, VELOCITY_VERSION, sizeof(info->version));
3274 strlcpy(info->bus_info, pci_name(vptr->pdev), sizeof(info->bus_info));
3277 static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3279 struct velocity_info *vptr = netdev_priv(dev);
3280 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3281 wol->wolopts |= WAKE_MAGIC;
3283 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3284 wol.wolopts|=WAKE_PHY;
3286 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3287 wol->wolopts |= WAKE_UCAST;
3288 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3289 wol->wolopts |= WAKE_ARP;
3290 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3293 static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3295 struct velocity_info *vptr = netdev_priv(dev);
3297 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3299 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3302 if (wol.wolopts & WAKE_PHY) {
3303 vptr->wol_opts|=VELOCITY_WOL_PHY;
3304 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3308 if (wol->wolopts & WAKE_MAGIC) {
3309 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3310 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3312 if (wol->wolopts & WAKE_UCAST) {
3313 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3314 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3316 if (wol->wolopts & WAKE_ARP) {
3317 vptr->wol_opts |= VELOCITY_WOL_ARP;
3318 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3320 memcpy(vptr->wol_passwd, wol->sopass, 6);
3324 static u32 velocity_get_msglevel(struct net_device *dev)
3329 static void velocity_set_msglevel(struct net_device *dev, u32 value)
3334 static int get_pending_timer_val(int val)
3336 int mult_bits = val >> 6;
3352 return (val & 0x3f) * mult;
3355 static void set_pending_timer_val(int *val, u32 us)
3361 mult = 1; /* mult with 4 */
3364 if (us >= 0x3f * 4) {
3365 mult = 2; /* mult with 16 */
3368 if (us >= 0x3f * 16) {
3369 mult = 3; /* mult with 64 */
3373 *val = (mult << 6) | ((us >> shift) & 0x3f);
3377 static int velocity_get_coalesce(struct net_device *dev,
3378 struct ethtool_coalesce *ecmd)
3380 struct velocity_info *vptr = netdev_priv(dev);
3382 ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup;
3383 ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup;
3385 ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer);
3386 ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer);
3391 static int velocity_set_coalesce(struct net_device *dev,
3392 struct ethtool_coalesce *ecmd)
3394 struct velocity_info *vptr = netdev_priv(dev);
3395 int max_us = 0x3f * 64;
3396 unsigned long flags;
3399 if (ecmd->tx_coalesce_usecs > max_us)
3401 if (ecmd->rx_coalesce_usecs > max_us)
3404 if (ecmd->tx_max_coalesced_frames > 0xff)
3406 if (ecmd->rx_max_coalesced_frames > 0xff)
3409 vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames;
3410 vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames;
3412 set_pending_timer_val(&vptr->options.rxqueue_timer,
3413 ecmd->rx_coalesce_usecs);
3414 set_pending_timer_val(&vptr->options.txqueue_timer,
3415 ecmd->tx_coalesce_usecs);
3417 /* Setup the interrupt suppression and queue timers */
3418 spin_lock_irqsave(&vptr->lock, flags);
3419 mac_disable_int(vptr->mac_regs);
3420 setup_adaptive_interrupts(vptr);
3421 setup_queue_timers(vptr);
3423 mac_write_int_mask(vptr->int_mask, vptr->mac_regs);
3424 mac_clear_isr(vptr->mac_regs);
3425 mac_enable_int(vptr->mac_regs);
3426 spin_unlock_irqrestore(&vptr->lock, flags);
3431 static const char velocity_gstrings[][ETH_GSTRING_LEN] = {
3450 "tx_ether_collisions",
3454 "rx_mac_control_frames",
3455 "tx_mac_control_frames",
3456 "rx_frame_alignement_errors",
3462 "in_range_length_errors",
3466 static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data)
3470 memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings));
3475 static int velocity_get_sset_count(struct net_device *dev, int sset)
3479 return ARRAY_SIZE(velocity_gstrings);
3485 static void velocity_get_ethtool_stats(struct net_device *dev,
3486 struct ethtool_stats *stats, u64 *data)
3488 if (netif_running(dev)) {
3489 struct velocity_info *vptr = netdev_priv(dev);
3490 u32 *p = vptr->mib_counter;
3493 spin_lock_irq(&vptr->lock);
3494 velocity_update_hw_mibs(vptr);
3495 spin_unlock_irq(&vptr->lock);
3497 for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++)
3502 static const struct ethtool_ops velocity_ethtool_ops = {
3503 .get_settings = velocity_get_settings,
3504 .set_settings = velocity_set_settings,
3505 .get_drvinfo = velocity_get_drvinfo,
3506 .get_wol = velocity_ethtool_get_wol,
3507 .set_wol = velocity_ethtool_set_wol,
3508 .get_msglevel = velocity_get_msglevel,
3509 .set_msglevel = velocity_set_msglevel,
3510 .get_link = velocity_get_link,
3511 .get_strings = velocity_get_strings,
3512 .get_sset_count = velocity_get_sset_count,
3513 .get_ethtool_stats = velocity_get_ethtool_stats,
3514 .get_coalesce = velocity_get_coalesce,
3515 .set_coalesce = velocity_set_coalesce,
3516 .begin = velocity_ethtool_up,
3517 .complete = velocity_ethtool_down
3520 #if defined(CONFIG_PM) && defined(CONFIG_INET)
3521 static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3523 struct in_ifaddr *ifa = ptr;
3524 struct net_device *dev = ifa->ifa_dev->dev;
3526 if (dev_net(dev) == &init_net &&
3527 dev->netdev_ops == &velocity_netdev_ops)
3528 velocity_get_ip(netdev_priv(dev));
3533 static struct notifier_block velocity_inetaddr_notifier = {
3534 .notifier_call = velocity_netdev_event,
3537 static void velocity_register_notifier(void)
3539 register_inetaddr_notifier(&velocity_inetaddr_notifier);
3542 static void velocity_unregister_notifier(void)
3544 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
3549 #define velocity_register_notifier() do {} while (0)
3550 #define velocity_unregister_notifier() do {} while (0)
3552 #endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */
3555 * velocity_init_module - load time function
3557 * Called when the velocity module is loaded. The PCI driver
3558 * is registered with the PCI layer, and in turn will call
3559 * the probe functions for each velocity adapter installed
3562 static int __init velocity_init_module(void)
3566 velocity_register_notifier();
3567 ret = pci_register_driver(&velocity_driver);
3569 velocity_unregister_notifier();
3574 * velocity_cleanup - module unload
3576 * When the velocity hardware is unloaded this function is called.
3577 * It will clean up the notifiers and the unregister the PCI
3578 * driver interface for this hardware. This in turn cleans up
3579 * all discovered interfaces before returning from the function
3581 static void __exit velocity_cleanup_module(void)
3583 velocity_unregister_notifier();
3584 pci_unregister_driver(&velocity_driver);
3587 module_init(velocity_init_module);
3588 module_exit(velocity_cleanup_module);