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IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
[net-next-2.6.git] / drivers / net / via-velocity.c
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1da177e4
LT		 1/*
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.
5 *
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.
9 *
10 * TODO
11 * Big-endian support
12 * rx_copybreak/alignment
13 * Scatter gather
14 * More testing
15 *
16 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@redhat.com>
17 * Additional fixes and clean up: Francois Romieu
18 *
19 * This source has not been verified for use in safety critical systems.
20 *
21 * Please direct queries about the revamped driver to the linux-kernel
22 * list not VIA.
23 *
24 * Original code:
25 *
26 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
27 * All rights reserved.
28 *
29 * This software may be redistributed and/or modified under
30 * the terms of the GNU General Public License as published by the Free
31 * Software Foundation; either version 2 of the License, or
32 * any later version.
33 *
34 * This program is distributed in the hope that it will be useful, but
35 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
36 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37 * for more details.
38 *
39 * Author: Chuang Liang-Shing, AJ Jiang
40 *
41 * Date: Jan 24, 2003
42 *
43 * MODULE_LICENSE("GPL");
44 *
45 */
46
47
48#include <linux/module.h>
49#include <linux/types.h>
1da177e4
LT		 50#include <linux/init.h>
51#include <linux/mm.h>
52#include <linux/errno.h>
53#include <linux/ioport.h>
54#include <linux/pci.h>
55#include <linux/kernel.h>
56#include <linux/netdevice.h>
57#include <linux/etherdevice.h>
58#include <linux/skbuff.h>
59#include <linux/delay.h>
60#include <linux/timer.h>
61#include <linux/slab.h>
62#include <linux/interrupt.h>
1da177e4
LT		 63#include <linux/string.h>
64#include <linux/wait.h>
65#include <asm/io.h>
66#include <linux/if.h>
1da177e4
LT		 67#include <asm/uaccess.h>
68#include <linux/proc_fs.h>
69#include <linux/inetdevice.h>
70#include <linux/reboot.h>
71#include <linux/ethtool.h>
72#include <linux/mii.h>
73#include <linux/in.h>
74#include <linux/if_arp.h>
75#include <linux/ip.h>
76#include <linux/tcp.h>
77#include <linux/udp.h>
78#include <linux/crc-ccitt.h>
79#include <linux/crc32.h>
80
81#include "via-velocity.h"
82
83
84static int velocity_nics = 0;
85static int msglevel = MSG_LEVEL_INFO;
86
87
88static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
7282d491 89static const struct ethtool_ops velocity_ethtool_ops;
1da177e4
LT		 90
91/*
92 Define module options
93*/
94
95MODULE_AUTHOR("VIA Networking Technologies, Inc.");
96MODULE_LICENSE("GPL");
97MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
98
99#define VELOCITY_PARAM(N,D) \
100 static int N[MAX_UNITS]=OPTION_DEFAULT;\
101 module_param_array(N, int, NULL, 0); \
102 MODULE_PARM_DESC(N, D);
103
104#define RX_DESC_MIN 64
105#define RX_DESC_MAX 255
106#define RX_DESC_DEF 64
107VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
108
109#define TX_DESC_MIN 16
110#define TX_DESC_MAX 256
111#define TX_DESC_DEF 64
112VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
113
114#define VLAN_ID_MIN 0
115#define VLAN_ID_MAX 4095
116#define VLAN_ID_DEF 0
117/* VID_setting[] is used for setting the VID of NIC.
118 0: default VID.
119 1-4094: other VIDs.
120*/
121VELOCITY_PARAM(VID_setting, "802.1Q VLAN ID");
122
123#define RX_THRESH_MIN 0
124#define RX_THRESH_MAX 3
125#define RX_THRESH_DEF 0
126/* rx_thresh[] is used for controlling the receive fifo threshold.
127 0: indicate the rxfifo threshold is 128 bytes.
128 1: indicate the rxfifo threshold is 512 bytes.
129 2: indicate the rxfifo threshold is 1024 bytes.
130 3: indicate the rxfifo threshold is store & forward.
131*/
132VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
133
134#define DMA_LENGTH_MIN 0
135#define DMA_LENGTH_MAX 7
136#define DMA_LENGTH_DEF 0
137
138/* DMA_length[] is used for controlling the DMA length
139 0: 8 DWORDs
140 1: 16 DWORDs
141 2: 32 DWORDs
142 3: 64 DWORDs
143 4: 128 DWORDs
144 5: 256 DWORDs
145 6: SF(flush till emply)
146 7: SF(flush till emply)
147*/
148VELOCITY_PARAM(DMA_length, "DMA length");
149
150#define TAGGING_DEF 0
151/* enable_tagging[] is used for enabling 802.1Q VID tagging.
152 0: disable VID seeting(default).
153 1: enable VID setting.
154*/
155VELOCITY_PARAM(enable_tagging, "Enable 802.1Q tagging");
156
157#define IP_ALIG_DEF 0
158/* IP_byte_align[] is used for IP header DWORD byte aligned
159 0: indicate the IP header won't be DWORD byte aligned.(Default) .
160 1: indicate the IP header will be DWORD byte aligned.
161 In some enviroment, the IP header should be DWORD byte aligned,
162 or the packet will be droped when we receive it. (eg: IPVS)
163*/
164VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
165
166#define TX_CSUM_DEF 1
167/* txcsum_offload[] is used for setting the checksum offload ability of NIC.
168 (We only support RX checksum offload now)
169 0: disable csum_offload[checksum offload
170 1: enable checksum offload. (Default)
171*/
172VELOCITY_PARAM(txcsum_offload, "Enable transmit packet checksum offload");
173
174#define FLOW_CNTL_DEF 1
175#define FLOW_CNTL_MIN 1
176#define FLOW_CNTL_MAX 5
177
178/* flow_control[] is used for setting the flow control ability of NIC.
179 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
180 2: enable TX flow control.
181 3: enable RX flow control.
182 4: enable RX/TX flow control.
183 5: disable
184*/
185VELOCITY_PARAM(flow_control, "Enable flow control ability");
186
187#define MED_LNK_DEF 0
188#define MED_LNK_MIN 0
189#define MED_LNK_MAX 4
190/* speed_duplex[] is used for setting the speed and duplex mode of NIC.
191 0: indicate autonegotiation for both speed and duplex mode
192 1: indicate 100Mbps half duplex mode
193 2: indicate 100Mbps full duplex mode
194 3: indicate 10Mbps half duplex mode
195 4: indicate 10Mbps full duplex mode
196
197 Note:
198 if EEPROM have been set to the force mode, this option is ignored
199 by driver.
200*/
201VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
202
203#define VAL_PKT_LEN_DEF 0
204/* ValPktLen[] is used for setting the checksum offload ability of NIC.
205 0: Receive frame with invalid layer 2 length (Default)
206 1: Drop frame with invalid layer 2 length
207*/
208VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
209
210#define WOL_OPT_DEF 0
211#define WOL_OPT_MIN 0
212#define WOL_OPT_MAX 7
213/* wol_opts[] is used for controlling wake on lan behavior.
214 0: Wake up if recevied a magic packet. (Default)
215 1: Wake up if link status is on/off.
216 2: Wake up if recevied an arp packet.
217 4: Wake up if recevied any unicast packet.
218 Those value can be sumed up to support more than one option.
219*/
220VELOCITY_PARAM(wol_opts, "Wake On Lan options");
221
222#define INT_WORKS_DEF 20
223#define INT_WORKS_MIN 10
224#define INT_WORKS_MAX 64
225
226VELOCITY_PARAM(int_works, "Number of packets per interrupt services");
227
228static int rx_copybreak = 200;
229module_param(rx_copybreak, int, 0644);
230MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
231
cabb7667
JG		 232static void velocity_init_info(struct pci_dev *pdev, struct velocity_info *vptr,
233 const struct velocity_info_tbl *info);
1da177e4
LT		 234static int velocity_get_pci_info(struct velocity_info *, struct pci_dev *pdev);
235static void velocity_print_info(struct velocity_info *vptr);
236static int velocity_open(struct net_device *dev);
237static int velocity_change_mtu(struct net_device *dev, int mtu);
238static int velocity_xmit(struct sk_buff *skb, struct net_device *dev);
7d12e780 239static int velocity_intr(int irq, void *dev_instance);
1da177e4
LT		 240static void velocity_set_multi(struct net_device *dev);
241static struct net_device_stats *velocity_get_stats(struct net_device *dev);
242static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
243static int velocity_close(struct net_device *dev);
244static int velocity_receive_frame(struct velocity_info *, int idx);
245static int velocity_alloc_rx_buf(struct velocity_info *, int idx);
246static void velocity_free_rd_ring(struct velocity_info *vptr);
247static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *);
248static int velocity_soft_reset(struct velocity_info *vptr);
249static void mii_init(struct velocity_info *vptr, u32 mii_status);
8a22dddb 250static u32 velocity_get_link(struct net_device *dev);
1da177e4
LT		 251static u32 velocity_get_opt_media_mode(struct velocity_info *vptr);
252static void velocity_print_link_status(struct velocity_info *vptr);
253static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs);
254static void velocity_shutdown(struct velocity_info *vptr);
255static void enable_flow_control_ability(struct velocity_info *vptr);
256static void enable_mii_autopoll(struct mac_regs __iomem * regs);
257static int velocity_mii_read(struct mac_regs __iomem *, u8 byIdx, u16 * pdata);
258static int velocity_mii_write(struct mac_regs __iomem *, u8 byMiiAddr, u16 data);
259static u32 mii_check_media_mode(struct mac_regs __iomem * regs);
260static u32 check_connection_type(struct mac_regs __iomem * regs);
261static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status);
262
263#ifdef CONFIG_PM
264
265static int velocity_suspend(struct pci_dev *pdev, pm_message_t state);
266static int velocity_resume(struct pci_dev *pdev);
267
268static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr);
269
270static struct notifier_block velocity_inetaddr_notifier = {
271 .notifier_call = velocity_netdev_event,
272};
273
274static DEFINE_SPINLOCK(velocity_dev_list_lock);
275static LIST_HEAD(velocity_dev_list);
276
277static void velocity_register_notifier(void)
278{
279 register_inetaddr_notifier(&velocity_inetaddr_notifier);
280}
281
282static void velocity_unregister_notifier(void)
283{
284 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
285}
286
287#else /* CONFIG_PM */
288
289#define velocity_register_notifier() do {} while (0)
290#define velocity_unregister_notifier() do {} while (0)
291
292#endif /* !CONFIG_PM */
293
294/*
295 * Internal board variants. At the moment we have only one
296 */
297
cabb7667
JG		 298static const struct velocity_info_tbl chip_info_table[] __devinitdata = {
299 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
300 { }
1da177e4
LT		 301};
302
303/*
304 * Describe the PCI device identifiers that we support in this
305 * device driver. Used for hotplug autoloading.
306 */
307
e54f4893
JG		 308static const struct pci_device_id velocity_id_table[] __devinitdata = {
309 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
310 { }
1da177e4
LT		 311};
312
313MODULE_DEVICE_TABLE(pci, velocity_id_table);
314
315/**
316 * get_chip_name - identifier to name
317 * @id: chip identifier
318 *
319 * Given a chip identifier return a suitable description. Returns
320 * a pointer a static string valid while the driver is loaded.
321 */
322
323static char __devinit *get_chip_name(enum chip_type chip_id)
324{
325 int i;
326 for (i = 0; chip_info_table[i].name != NULL; i++)
327 if (chip_info_table[i].chip_id == chip_id)
328 break;
329 return chip_info_table[i].name;
330}
331
332/**
333 * velocity_remove1 - device unplug
334 * @pdev: PCI device being removed
335 *
336 * Device unload callback. Called on an unplug or on module
337 * unload for each active device that is present. Disconnects
338 * the device from the network layer and frees all the resources
339 */
340
341static void __devexit velocity_remove1(struct pci_dev *pdev)
342{
343 struct net_device *dev = pci_get_drvdata(pdev);
8ab6f3f7 344 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 345
346#ifdef CONFIG_PM
347 unsigned long flags;
348
349 spin_lock_irqsave(&velocity_dev_list_lock, flags);
350 if (!list_empty(&velocity_dev_list))
351 list_del(&vptr->list);
352 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
353#endif
354 unregister_netdev(dev);
355 iounmap(vptr->mac_regs);
356 pci_release_regions(pdev);
357 pci_disable_device(pdev);
358 pci_set_drvdata(pdev, NULL);
359 free_netdev(dev);
360
361 velocity_nics--;
362}
363
364/**
365 * velocity_set_int_opt - parser for integer options
366 * @opt: pointer to option value
367 * @val: value the user requested (or -1 for default)
368 * @min: lowest value allowed
369 * @max: highest value allowed
370 * @def: default value
371 * @name: property name
372 * @dev: device name
373 *
374 * Set an integer property in the module options. This function does
375 * all the verification and checking as well as reporting so that
376 * we don't duplicate code for each option.
377 */
378
379static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, char *devname)
380{
381 if (val == -1)
382 *opt = def;
383 else if (val < min || val > max) {
384 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
385 devname, name, min, max);
386 *opt = def;
387 } else {
388 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
389 devname, name, val);
390 *opt = val;
391 }
392}
393
394/**
395 * velocity_set_bool_opt - parser for boolean options
396 * @opt: pointer to option value
397 * @val: value the user requested (or -1 for default)
398 * @def: default value (yes/no)
399 * @flag: numeric value to set for true.
400 * @name: property name
401 * @dev: device name
402 *
403 * Set a boolean property in the module options. This function does
404 * all the verification and checking as well as reporting so that
405 * we don't duplicate code for each option.
406 */
407
408static void __devinit velocity_set_bool_opt(u32 * opt, int val, int def, u32 flag, char *name, char *devname)
409{
410 (*opt) &= (~flag);
411 if (val == -1)
412 *opt |= (def ? flag : 0);
413 else if (val < 0 || val > 1) {
6aa20a22 414 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
1da177e4
LT		 415 devname, name);
416 *opt |= (def ? flag : 0);
417 } else {
6aa20a22 418 printk(KERN_INFO "%s: set parameter %s to %s\n",
1da177e4
LT		 419 devname, name, val ? "TRUE" : "FALSE");
420 *opt |= (val ? flag : 0);
421 }
422}
423
424/**
425 * velocity_get_options - set options on device
426 * @opts: option structure for the device
427 * @index: index of option to use in module options array
428 * @devname: device name
429 *
430 * Turn the module and command options into a single structure
431 * for the current device
432 */
433
434static void __devinit velocity_get_options(struct velocity_opt *opts, int index, char *devname)
435{
436
437 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
438 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
439 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
440 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
441 velocity_set_int_opt(&opts->vid, VID_setting[index], VLAN_ID_MIN, VLAN_ID_MAX, VLAN_ID_DEF, "VID_setting", devname);
442 velocity_set_bool_opt(&opts->flags, enable_tagging[index], TAGGING_DEF, VELOCITY_FLAGS_TAGGING, "enable_tagging", devname);
443 velocity_set_bool_opt(&opts->flags, txcsum_offload[index], TX_CSUM_DEF, VELOCITY_FLAGS_TX_CSUM, "txcsum_offload", devname);
444 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
445 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
446 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
447 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
448 velocity_set_int_opt((int *) &opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname);
449 velocity_set_int_opt((int *) &opts->int_works, int_works[index], INT_WORKS_MIN, INT_WORKS_MAX, INT_WORKS_DEF, "Interrupt service works", devname);
450 opts->numrx = (opts->numrx & ~3);
451}
452
453/**
454 * velocity_init_cam_filter - initialise CAM
455 * @vptr: velocity to program
456 *
457 * Initialize the content addressable memory used for filters. Load
458 * appropriately according to the presence of VLAN
459 */
460
461static void velocity_init_cam_filter(struct velocity_info *vptr)
462{
463 struct mac_regs __iomem * regs = vptr->mac_regs;
464
465 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
466 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, &regs->MCFG);
467 WORD_REG_BITS_ON(MCFG_VIDFR, &regs->MCFG);
468
469 /* Disable all CAMs */
470 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
471 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
472 mac_set_cam_mask(regs, vptr->vCAMmask, VELOCITY_VLAN_ID_CAM);
473 mac_set_cam_mask(regs, vptr->mCAMmask, VELOCITY_MULTICAST_CAM);
474
475 /* Enable first VCAM */
476 if (vptr->flags & VELOCITY_FLAGS_TAGGING) {
477 /* If Tagging option is enabled and VLAN ID is not zero, then
478 turn on MCFG_RTGOPT also */
479 if (vptr->options.vid != 0)
480 WORD_REG_BITS_ON(MCFG_RTGOPT, &regs->MCFG);
481
482 mac_set_cam(regs, 0, (u8 *) & (vptr->options.vid), VELOCITY_VLAN_ID_CAM);
483 vptr->vCAMmask[0] |= 1;
484 mac_set_cam_mask(regs, vptr->vCAMmask, VELOCITY_VLAN_ID_CAM);
485 } else {
486 u16 temp = 0;
487 mac_set_cam(regs, 0, (u8 *) &temp, VELOCITY_VLAN_ID_CAM);
488 temp = 1;
489 mac_set_cam_mask(regs, (u8 *) &temp, VELOCITY_VLAN_ID_CAM);
490 }
491}
492
493/**
494 * velocity_rx_reset - handle a receive reset
495 * @vptr: velocity we are resetting
496 *
497 * Reset the ownership and status for the receive ring side.
498 * Hand all the receive queue to the NIC.
499 */
500
501static void velocity_rx_reset(struct velocity_info *vptr)
502{
503
504 struct mac_regs __iomem * regs = vptr->mac_regs;
505 int i;
506
507 vptr->rd_dirty = vptr->rd_filled = vptr->rd_curr = 0;
508
509 /*
510 * Init state, all RD entries belong to the NIC
511 */
512 for (i = 0; i < vptr->options.numrx; ++i)
513 vptr->rd_ring[i].rdesc0.owner = OWNED_BY_NIC;
514
515 writew(vptr->options.numrx, &regs->RBRDU);
516 writel(vptr->rd_pool_dma, &regs->RDBaseLo);
517 writew(0, &regs->RDIdx);
518 writew(vptr->options.numrx - 1, &regs->RDCSize);
519}
520
521/**
522 * velocity_init_registers - initialise MAC registers
523 * @vptr: velocity to init
524 * @type: type of initialisation (hot or cold)
525 *
526 * Initialise the MAC on a reset or on first set up on the
527 * hardware.
528 */
529
6aa20a22 530static void velocity_init_registers(struct velocity_info *vptr,
1da177e4
LT		 531 enum velocity_init_type type)
532{
533 struct mac_regs __iomem * regs = vptr->mac_regs;
534 int i, mii_status;
535
536 mac_wol_reset(regs);
537
538 switch (type) {
539 case VELOCITY_INIT_RESET:
540 case VELOCITY_INIT_WOL:
541
542 netif_stop_queue(vptr->dev);
543
544 /*
545 * Reset RX to prevent RX pointer not on the 4X location
546 */
547 velocity_rx_reset(vptr);
548 mac_rx_queue_run(regs);
549 mac_rx_queue_wake(regs);
550
551 mii_status = velocity_get_opt_media_mode(vptr);
552 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
553 velocity_print_link_status(vptr);
554 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
555 netif_wake_queue(vptr->dev);
556 }
557
558 enable_flow_control_ability(vptr);
559
560 mac_clear_isr(regs);
561 writel(CR0_STOP, &regs->CR0Clr);
6aa20a22 562 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1da177e4
LT		 563 &regs->CR0Set);
564
565 break;
566
567 case VELOCITY_INIT_COLD:
568 default:
569 /*
570 * Do reset
571 */
572 velocity_soft_reset(vptr);
573 mdelay(5);
574
575 mac_eeprom_reload(regs);
576 for (i = 0; i < 6; i++) {
577 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
578 }
579 /*
580 * clear Pre_ACPI bit.
581 */
582 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
583 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
584 mac_set_dma_length(regs, vptr->options.DMA_length);
585
586 writeb(WOLCFG_SAM | WOLCFG_SAB, &regs->WOLCFGSet);
587 /*
588 * Back off algorithm use original IEEE standard
589 */
590 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), &regs->CFGB);
591
592 /*
593 * Init CAM filter
594 */
595 velocity_init_cam_filter(vptr);
596
597 /*
598 * Set packet filter: Receive directed and broadcast address
599 */
600 velocity_set_multi(vptr->dev);
601
602 /*
603 * Enable MII auto-polling
604 */
605 enable_mii_autopoll(regs);
606
607 vptr->int_mask = INT_MASK_DEF;
608
609 writel(cpu_to_le32(vptr->rd_pool_dma), &regs->RDBaseLo);
610 writew(vptr->options.numrx - 1, &regs->RDCSize);
611 mac_rx_queue_run(regs);
612 mac_rx_queue_wake(regs);
613
614 writew(vptr->options.numtx - 1, &regs->TDCSize);
615
616 for (i = 0; i < vptr->num_txq; i++) {
617 writel(cpu_to_le32(vptr->td_pool_dma[i]), &(regs->TDBaseLo[i]));
618 mac_tx_queue_run(regs, i);
619 }
620
621 init_flow_control_register(vptr);
622
623 writel(CR0_STOP, &regs->CR0Clr);
624 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), &regs->CR0Set);
625
626 mii_status = velocity_get_opt_media_mode(vptr);
627 netif_stop_queue(vptr->dev);
628
629 mii_init(vptr, mii_status);
630
631 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
632 velocity_print_link_status(vptr);
633 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
634 netif_wake_queue(vptr->dev);
635 }
636
637 enable_flow_control_ability(vptr);
638 mac_hw_mibs_init(regs);
639 mac_write_int_mask(vptr->int_mask, regs);
640 mac_clear_isr(regs);
641
642 }
643}
644
645/**
646 * velocity_soft_reset - soft reset
647 * @vptr: velocity to reset
648 *
649 * Kick off a soft reset of the velocity adapter and then poll
650 * until the reset sequence has completed before returning.
651 */
652
653static int velocity_soft_reset(struct velocity_info *vptr)
654{
655 struct mac_regs __iomem * regs = vptr->mac_regs;
656 int i = 0;
657
658 writel(CR0_SFRST, &regs->CR0Set);
659
660 for (i = 0; i < W_MAX_TIMEOUT; i++) {
661 udelay(5);
662 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, &regs->CR0Set))
663 break;
664 }
665
666 if (i == W_MAX_TIMEOUT) {
667 writel(CR0_FORSRST, &regs->CR0Set);
668 /* FIXME: PCI POSTING */
669 /* delay 2ms */
670 mdelay(2);
671 }
672 return 0;
673}
674
675/**
676 * velocity_found1 - set up discovered velocity card
677 * @pdev: PCI device
678 * @ent: PCI device table entry that matched
679 *
680 * Configure a discovered adapter from scratch. Return a negative
681 * errno error code on failure paths.
682 */
683
684static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
685{
686 static int first = 1;
687 struct net_device *dev;
688 int i;
cabb7667 689 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
1da177e4
LT		 690 struct velocity_info *vptr;
691 struct mac_regs __iomem * regs;
692 int ret = -ENOMEM;
693
e54f4893
JG		 694 /* FIXME: this driver, like almost all other ethernet drivers,
695 * can support more than MAX_UNITS.
696 */
1da177e4 697 if (velocity_nics >= MAX_UNITS) {
6aa20a22 698 dev_notice(&pdev->dev, "already found %d NICs.\n",
e54f4893 699 velocity_nics);
1da177e4
LT		 700 return -ENODEV;
701 }
702
703 dev = alloc_etherdev(sizeof(struct velocity_info));
e54f4893 704 if (!dev) {
9b91cf9d 705 dev_err(&pdev->dev, "allocate net device failed.\n");
1da177e4
LT		 706 goto out;
707 }
6aa20a22 708
1da177e4 709 /* Chain it all together */
6aa20a22 710
1da177e4
LT		 711 SET_MODULE_OWNER(dev);
712 SET_NETDEV_DEV(dev, &pdev->dev);
8ab6f3f7 713 vptr = netdev_priv(dev);
1da177e4
LT		 714
715
716 if (first) {
6aa20a22 717 printk(KERN_INFO "%s Ver. %s\n",
1da177e4
LT		 718 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
719 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
720 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
721 first = 0;
722 }
723
724 velocity_init_info(pdev, vptr, info);
725
726 vptr->dev = dev;
727
728 dev->irq = pdev->irq;
729
730 ret = pci_enable_device(pdev);
6aa20a22 731 if (ret < 0)
1da177e4
LT		 732 goto err_free_dev;
733
734 ret = velocity_get_pci_info(vptr, pdev);
735 if (ret < 0) {
e54f4893 736 /* error message already printed */
1da177e4
LT		 737 goto err_disable;
738 }
739
740 ret = pci_request_regions(pdev, VELOCITY_NAME);
741 if (ret < 0) {
9b91cf9d 742 dev_err(&pdev->dev, "No PCI resources.\n");
1da177e4
LT		 743 goto err_disable;
744 }
745
cabb7667 746 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
1da177e4
LT		 747 if (regs == NULL) {
748 ret = -EIO;
749 goto err_release_res;
750 }
751
752 vptr->mac_regs = regs;
753
754 mac_wol_reset(regs);
755
756 dev->base_addr = vptr->ioaddr;
757
758 for (i = 0; i < 6; i++)
759 dev->dev_addr[i] = readb(&regs->PAR[i]);
760
761
762 velocity_get_options(&vptr->options, velocity_nics, dev->name);
763
6aa20a22 764 /*
1da177e4
LT		 765 * Mask out the options cannot be set to the chip
766 */
6aa20a22 767
1da177e4
LT		 768 vptr->options.flags &= info->flags;
769
770 /*
771 * Enable the chip specified capbilities
772 */
6aa20a22 773
1da177e4
LT		 774 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
775
776 vptr->wol_opts = vptr->options.wol_opts;
777 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
778
779 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
780
781 dev->irq = pdev->irq;
782 dev->open = velocity_open;
783 dev->hard_start_xmit = velocity_xmit;
784 dev->stop = velocity_close;
785 dev->get_stats = velocity_get_stats;
786 dev->set_multicast_list = velocity_set_multi;
787 dev->do_ioctl = velocity_ioctl;
788 dev->ethtool_ops = &velocity_ethtool_ops;
789 dev->change_mtu = velocity_change_mtu;
790#ifdef VELOCITY_ZERO_COPY_SUPPORT
791 dev->features |= NETIF_F_SG;
792#endif
793
794 if (vptr->flags & VELOCITY_FLAGS_TX_CSUM) {
9f3f46b5 795 dev->features |= NETIF_F_IP_CSUM;
1da177e4
LT		 796 }
797
798 ret = register_netdev(dev);
799 if (ret < 0)
800 goto err_iounmap;
801
8a22dddb
FR		 802 if (velocity_get_link(dev))
803 netif_carrier_off(dev);
804
1da177e4
LT		 805 velocity_print_info(vptr);
806 pci_set_drvdata(pdev, dev);
6aa20a22 807
1da177e4 808 /* and leave the chip powered down */
6aa20a22 809
1da177e4
LT		 810 pci_set_power_state(pdev, PCI_D3hot);
811#ifdef CONFIG_PM
812 {
813 unsigned long flags;
814
815 spin_lock_irqsave(&velocity_dev_list_lock, flags);
816 list_add(&vptr->list, &velocity_dev_list);
817 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
818 }
819#endif
820 velocity_nics++;
821out:
822 return ret;
823
824err_iounmap:
825 iounmap(regs);
826err_release_res:
827 pci_release_regions(pdev);
828err_disable:
829 pci_disable_device(pdev);
830err_free_dev:
831 free_netdev(dev);
832 goto out;
833}
834
835/**
836 * velocity_print_info - per driver data
837 * @vptr: velocity
838 *
839 * Print per driver data as the kernel driver finds Velocity
840 * hardware
841 */
842
843static void __devinit velocity_print_info(struct velocity_info *vptr)
844{
845 struct net_device *dev = vptr->dev;
846
847 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
6aa20a22
JG		 848 printk(KERN_INFO "%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
849 dev->name,
850 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
1da177e4
LT		 851 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
852}
853
854/**
855 * velocity_init_info - init private data
856 * @pdev: PCI device
857 * @vptr: Velocity info
858 * @info: Board type
859 *
860 * Set up the initial velocity_info struct for the device that has been
861 * discovered.
862 */
863
cabb7667
JG		 864static void __devinit velocity_init_info(struct pci_dev *pdev,
865 struct velocity_info *vptr,
866 const struct velocity_info_tbl *info)
1da177e4
LT		 867{
868 memset(vptr, 0, sizeof(struct velocity_info));
869
870 vptr->pdev = pdev;
871 vptr->chip_id = info->chip_id;
1da177e4
LT		 872 vptr->num_txq = info->txqueue;
873 vptr->multicast_limit = MCAM_SIZE;
874 spin_lock_init(&vptr->lock);
875 INIT_LIST_HEAD(&vptr->list);
876}
877
878/**
879 * velocity_get_pci_info - retrieve PCI info for device
880 * @vptr: velocity device
881 * @pdev: PCI device it matches
882 *
883 * Retrieve the PCI configuration space data that interests us from
884 * the kernel PCI layer
885 */
886
887static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
888{
e54f4893 889 if (pci_read_config_byte(pdev, PCI_REVISION_ID, &vptr->rev_id) < 0)
1da177e4 890 return -EIO;
6aa20a22 891
1da177e4
LT		 892 pci_set_master(pdev);
893
894 vptr->ioaddr = pci_resource_start(pdev, 0);
895 vptr->memaddr = pci_resource_start(pdev, 1);
6aa20a22 896
e54f4893 897 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
9b91cf9d 898 dev_err(&pdev->dev,
e54f4893 899 "region #0 is not an I/O resource, aborting.\n");
1da177e4
LT		 900 return -EINVAL;
901 }
902
e54f4893 903 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
9b91cf9d 904 dev_err(&pdev->dev,
e54f4893 905 "region #1 is an I/O resource, aborting.\n");
1da177e4
LT		 906 return -EINVAL;
907 }
908
cabb7667 909 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
9b91cf9d 910 dev_err(&pdev->dev, "region #1 is too small.\n");
1da177e4
LT		 911 return -EINVAL;
912 }
913 vptr->pdev = pdev;
914
915 return 0;
916}
917
918/**
919 * velocity_init_rings - set up DMA rings
920 * @vptr: Velocity to set up
921 *
922 * Allocate PCI mapped DMA rings for the receive and transmit layer
923 * to use.
924 */
925
926static int velocity_init_rings(struct velocity_info *vptr)
927{
928 int i;
929 unsigned int psize;
930 unsigned int tsize;
931 dma_addr_t pool_dma;
932 u8 *pool;
933
934 /*
6aa20a22 935 * Allocate all RD/TD rings a single pool
1da177e4 936 */
6aa20a22
JG		 937
938 psize = vptr->options.numrx * sizeof(struct rx_desc) +
1da177e4
LT		 939 vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
940
941 /*
942 * pci_alloc_consistent() fulfills the requirement for 64 bytes
943 * alignment
944 */
945 pool = pci_alloc_consistent(vptr->pdev, psize, &pool_dma);
946
947 if (pool == NULL) {
6aa20a22 948 printk(KERN_ERR "%s : DMA memory allocation failed.\n",
1da177e4
LT		 949 vptr->dev->name);
950 return -ENOMEM;
951 }
952
953 memset(pool, 0, psize);
954
955 vptr->rd_ring = (struct rx_desc *) pool;
956
957 vptr->rd_pool_dma = pool_dma;
958
959 tsize = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
6aa20a22 960 vptr->tx_bufs = pci_alloc_consistent(vptr->pdev, tsize,
1da177e4
LT		 961 &vptr->tx_bufs_dma);
962
963 if (vptr->tx_bufs == NULL) {
6aa20a22 964 printk(KERN_ERR "%s: DMA memory allocation failed.\n",
1da177e4
LT		 965 vptr->dev->name);
966 pci_free_consistent(vptr->pdev, psize, pool, pool_dma);
967 return -ENOMEM;
968 }
969
970 memset(vptr->tx_bufs, 0, vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq);
971
972 i = vptr->options.numrx * sizeof(struct rx_desc);
973 pool += i;
974 pool_dma += i;
975 for (i = 0; i < vptr->num_txq; i++) {
976 int offset = vptr->options.numtx * sizeof(struct tx_desc);
977
978 vptr->td_pool_dma[i] = pool_dma;
979 vptr->td_rings[i] = (struct tx_desc *) pool;
980 pool += offset;
981 pool_dma += offset;
982 }
983 return 0;
984}
985
986/**
987 * velocity_free_rings - free PCI ring pointers
988 * @vptr: Velocity to free from
989 *
990 * Clean up the PCI ring buffers allocated to this velocity.
991 */
992
993static void velocity_free_rings(struct velocity_info *vptr)
994{
995 int size;
996
6aa20a22 997 size = vptr->options.numrx * sizeof(struct rx_desc) +
1da177e4
LT		 998 vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
999
1000 pci_free_consistent(vptr->pdev, size, vptr->rd_ring, vptr->rd_pool_dma);
1001
1002 size = vptr->options.numtx * PKT_BUF_SZ * vptr->num_txq;
1003
1004 pci_free_consistent(vptr->pdev, size, vptr->tx_bufs, vptr->tx_bufs_dma);
1005}
1006
1007static inline void velocity_give_many_rx_descs(struct velocity_info *vptr)
1008{
1009 struct mac_regs __iomem *regs = vptr->mac_regs;
1010 int avail, dirty, unusable;
1011
1012 /*
1013 * RD number must be equal to 4X per hardware spec
1014 * (programming guide rev 1.20, p.13)
1015 */
1016 if (vptr->rd_filled < 4)
1017 return;
1018
1019 wmb();
1020
1021 unusable = vptr->rd_filled & 0x0003;
1022 dirty = vptr->rd_dirty - unusable;
1023 for (avail = vptr->rd_filled & 0xfffc; avail; avail--) {
1024 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
1025 vptr->rd_ring[dirty].rdesc0.owner = OWNED_BY_NIC;
1026 }
1027
1028 writew(vptr->rd_filled & 0xfffc, &regs->RBRDU);
1029 vptr->rd_filled = unusable;
1030}
1031
1032static int velocity_rx_refill(struct velocity_info *vptr)
1033{
1034 int dirty = vptr->rd_dirty, done = 0, ret = 0;
1035
1036 do {
1037 struct rx_desc *rd = vptr->rd_ring + dirty;
1038
1039 /* Fine for an all zero Rx desc at init time as well */
1040 if (rd->rdesc0.owner == OWNED_BY_NIC)
1041 break;
1042
1043 if (!vptr->rd_info[dirty].skb) {
1044 ret = velocity_alloc_rx_buf(vptr, dirty);
1045 if (ret < 0)
1046 break;
1047 }
1048 done++;
6aa20a22 1049 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
1da177e4
LT		 1050 } while (dirty != vptr->rd_curr);
1051
1052 if (done) {
1053 vptr->rd_dirty = dirty;
1054 vptr->rd_filled += done;
1055 velocity_give_many_rx_descs(vptr);
1056 }
1057
1058 return ret;
1059}
1060
1061/**
1062 * velocity_init_rd_ring - set up receive ring
1063 * @vptr: velocity to configure
1064 *
1065 * Allocate and set up the receive buffers for each ring slot and
1066 * assign them to the network adapter.
1067 */
1068
1069static int velocity_init_rd_ring(struct velocity_info *vptr)
1070{
1071 int ret = -ENOMEM;
6aa20a22 1072 unsigned int rsize = sizeof(struct velocity_rd_info) *
1da177e4
LT		 1073 vptr->options.numrx;
1074
1075 vptr->rd_info = kmalloc(rsize, GFP_KERNEL);
1076 if(vptr->rd_info == NULL)
1077 goto out;
1078 memset(vptr->rd_info, 0, rsize);
1079
1080 vptr->rd_filled = vptr->rd_dirty = vptr->rd_curr = 0;
1081
1082 ret = velocity_rx_refill(vptr);
1083 if (ret < 0) {
1084 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1085 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1086 velocity_free_rd_ring(vptr);
1087 }
1088out:
1089 return ret;
1090}
1091
1092/**
1093 * velocity_free_rd_ring - free receive ring
1094 * @vptr: velocity to clean up
1095 *
1096 * Free the receive buffers for each ring slot and any
1097 * attached socket buffers that need to go away.
1098 */
1099
1100static void velocity_free_rd_ring(struct velocity_info *vptr)
1101{
1102 int i;
1103
1104 if (vptr->rd_info == NULL)
1105 return;
1106
1107 for (i = 0; i < vptr->options.numrx; i++) {
1108 struct velocity_rd_info *rd_info = &(vptr->rd_info[i]);
b3c3e7d7
FR		 1109 struct rx_desc *rd = vptr->rd_ring + i;
1110
1111 memset(rd, 0, sizeof(*rd));
1da177e4
LT		 1112
1113 if (!rd_info->skb)
1114 continue;
1115 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1116 PCI_DMA_FROMDEVICE);
1117 rd_info->skb_dma = (dma_addr_t) NULL;
1118
1119 dev_kfree_skb(rd_info->skb);
1120 rd_info->skb = NULL;
1121 }
1122
1123 kfree(vptr->rd_info);
1124 vptr->rd_info = NULL;
1125}
1126
1127/**
1128 * velocity_init_td_ring - set up transmit ring
1129 * @vptr: velocity
1130 *
1131 * Set up the transmit ring and chain the ring pointers together.
1132 * Returns zero on success or a negative posix errno code for
1133 * failure.
1134 */
6aa20a22 1135
1da177e4
LT		 1136static int velocity_init_td_ring(struct velocity_info *vptr)
1137{
1138 int i, j;
1139 dma_addr_t curr;
1140 struct tx_desc *td;
1141 struct velocity_td_info *td_info;
6aa20a22 1142 unsigned int tsize = sizeof(struct velocity_td_info) *
1da177e4
LT		 1143 vptr->options.numtx;
1144
1145 /* Init the TD ring entries */
1146 for (j = 0; j < vptr->num_txq; j++) {
1147 curr = vptr->td_pool_dma[j];
1148
1149 vptr->td_infos[j] = kmalloc(tsize, GFP_KERNEL);
1150 if(vptr->td_infos[j] == NULL)
1151 {
1152 while(--j >= 0)
1153 kfree(vptr->td_infos[j]);
1154 return -ENOMEM;
1155 }
1156 memset(vptr->td_infos[j], 0, tsize);
1157
1158 for (i = 0; i < vptr->options.numtx; i++, curr += sizeof(struct tx_desc)) {
1159 td = &(vptr->td_rings[j][i]);
1160 td_info = &(vptr->td_infos[j][i]);
1161 td_info->buf = vptr->tx_bufs +
1162 (j * vptr->options.numtx + i) * PKT_BUF_SZ;
1163 td_info->buf_dma = vptr->tx_bufs_dma +
1164 (j * vptr->options.numtx + i) * PKT_BUF_SZ;
1165 }
1166 vptr->td_tail[j] = vptr->td_curr[j] = vptr->td_used[j] = 0;
1167 }
1168 return 0;
1169}
1170
1171/*
1172 * FIXME: could we merge this with velocity_free_tx_buf ?
1173 */
1174
1175static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1176 int q, int n)
1177{
1178 struct velocity_td_info * td_info = &(vptr->td_infos[q][n]);
1179 int i;
6aa20a22 1180
1da177e4
LT		 1181 if (td_info == NULL)
1182 return;
6aa20a22 1183
1da177e4
LT		 1184 if (td_info->skb) {
1185 for (i = 0; i < td_info->nskb_dma; i++)
1186 {
1187 if (td_info->skb_dma[i]) {
6aa20a22 1188 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1da177e4
LT		 1189 td_info->skb->len, PCI_DMA_TODEVICE);
1190 td_info->skb_dma[i] = (dma_addr_t) NULL;
1191 }
1192 }
1193 dev_kfree_skb(td_info->skb);
1194 td_info->skb = NULL;
1195 }
1196}
1197
1198/**
1199 * velocity_free_td_ring - free td ring
1200 * @vptr: velocity
1201 *
1202 * Free up the transmit ring for this particular velocity adapter.
1203 * We free the ring contents but not the ring itself.
1204 */
6aa20a22 1205
1da177e4
LT		 1206static void velocity_free_td_ring(struct velocity_info *vptr)
1207{
1208 int i, j;
1209
1210 for (j = 0; j < vptr->num_txq; j++) {
1211 if (vptr->td_infos[j] == NULL)
1212 continue;
1213 for (i = 0; i < vptr->options.numtx; i++) {
1214 velocity_free_td_ring_entry(vptr, j, i);
1215
1216 }
b4558ea9
JJ		 1217 kfree(vptr->td_infos[j]);
1218 vptr->td_infos[j] = NULL;
1da177e4
LT		 1219 }
1220}
1221
1222/**
1223 * velocity_rx_srv - service RX interrupt
1224 * @vptr: velocity
1225 * @status: adapter status (unused)
1226 *
1227 * Walk the receive ring of the velocity adapter and remove
1228 * any received packets from the receive queue. Hand the ring
1229 * slots back to the adapter for reuse.
1230 */
6aa20a22 1231
1da177e4
LT		 1232static int velocity_rx_srv(struct velocity_info *vptr, int status)
1233{
1234 struct net_device_stats *stats = &vptr->stats;
1235 int rd_curr = vptr->rd_curr;
1236 int works = 0;
1237
1238 do {
1239 struct rx_desc *rd = vptr->rd_ring + rd_curr;
1240
1241 if (!vptr->rd_info[rd_curr].skb)
1242 break;
1243
1244 if (rd->rdesc0.owner == OWNED_BY_NIC)
1245 break;
1246
1247 rmb();
1248
1249 /*
1250 * Don't drop CE or RL error frame although RXOK is off
1251 */
1252 if ((rd->rdesc0.RSR & RSR_RXOK) || (!(rd->rdesc0.RSR & RSR_RXOK) && (rd->rdesc0.RSR & (RSR_CE | RSR_RL)))) {
1253 if (velocity_receive_frame(vptr, rd_curr) < 0)
1254 stats->rx_dropped++;
1255 } else {
1256 if (rd->rdesc0.RSR & RSR_CRC)
1257 stats->rx_crc_errors++;
1258 if (rd->rdesc0.RSR & RSR_FAE)
1259 stats->rx_frame_errors++;
1260
1261 stats->rx_dropped++;
1262 }
1263
1264 rd->inten = 1;
1265
1266 vptr->dev->last_rx = jiffies;
1267
1268 rd_curr++;
1269 if (rd_curr >= vptr->options.numrx)
1270 rd_curr = 0;
1271 } while (++works <= 15);
1272
1273 vptr->rd_curr = rd_curr;
1274
1275 if (works > 0 && velocity_rx_refill(vptr) < 0) {
1276 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1277 "%s: rx buf allocation failure\n", vptr->dev->name);
1278 }
1279
1280 VAR_USED(stats);
1281 return works;
1282}
1283
1284/**
1285 * velocity_rx_csum - checksum process
1286 * @rd: receive packet descriptor
1287 * @skb: network layer packet buffer
1288 *
1289 * Process the status bits for the received packet and determine
1290 * if the checksum was computed and verified by the hardware
1291 */
6aa20a22 1292
1da177e4
LT		 1293static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1294{
1295 skb->ip_summed = CHECKSUM_NONE;
1296
1297 if (rd->rdesc1.CSM & CSM_IPKT) {
1298 if (rd->rdesc1.CSM & CSM_IPOK) {
6aa20a22 1299 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1da177e4
LT		 1300 (rd->rdesc1.CSM & CSM_UDPKT)) {
1301 if (!(rd->rdesc1.CSM & CSM_TUPOK)) {
1302 return;
1303 }
1304 }
1305 skb->ip_summed = CHECKSUM_UNNECESSARY;
1306 }
1307 }
1308}
1309
1310/**
1311 * velocity_rx_copy - in place Rx copy for small packets
1312 * @rx_skb: network layer packet buffer candidate
1313 * @pkt_size: received data size
1314 * @rd: receive packet descriptor
1315 * @dev: network device
1316 *
1317 * Replace the current skb that is scheduled for Rx processing by a
1318 * shorter, immediatly allocated skb, if the received packet is small
1319 * enough. This function returns a negative value if the received
1320 * packet is too big or if memory is exhausted.
1321 */
1322static inline int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1323 struct velocity_info *vptr)
1324{
1325 int ret = -1;
1326
1327 if (pkt_size < rx_copybreak) {
1328 struct sk_buff *new_skb;
1329
1330 new_skb = dev_alloc_skb(pkt_size + 2);
1331 if (new_skb) {
1332 new_skb->dev = vptr->dev;
1333 new_skb->ip_summed = rx_skb[0]->ip_summed;
1334
1335 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN)
1336 skb_reserve(new_skb, 2);
1337
689be439 1338 memcpy(new_skb->data, rx_skb[0]->data, pkt_size);
1da177e4
LT		 1339 *rx_skb = new_skb;
1340 ret = 0;
1341 }
6aa20a22 1342
1da177e4
LT		 1343 }
1344 return ret;
1345}
1346
1347/**
1348 * velocity_iph_realign - IP header alignment
1349 * @vptr: velocity we are handling
1350 * @skb: network layer packet buffer
1351 * @pkt_size: received data size
1352 *
1353 * Align IP header on a 2 bytes boundary. This behavior can be
1354 * configured by the user.
1355 */
1356static inline void velocity_iph_realign(struct velocity_info *vptr,
1357 struct sk_buff *skb, int pkt_size)
1358{
1359 /* FIXME - memmove ? */
1360 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
1361 int i;
1362
1363 for (i = pkt_size; i >= 0; i--)
1364 *(skb->data + i + 2) = *(skb->data + i);
1365 skb_reserve(skb, 2);
1366 }
1367}
1368
1369/**
1370 * velocity_receive_frame - received packet processor
1371 * @vptr: velocity we are handling
1372 * @idx: ring index
6aa20a22 1373 *
1da177e4
LT		 1374 * A packet has arrived. We process the packet and if appropriate
1375 * pass the frame up the network stack
1376 */
6aa20a22 1377
1da177e4
LT		 1378static int velocity_receive_frame(struct velocity_info *vptr, int idx)
1379{
1380 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
1381 struct net_device_stats *stats = &vptr->stats;
1382 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1383 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1384 int pkt_len = rd->rdesc0.len;
1385 struct sk_buff *skb;
1386
1387 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
1388 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
1389 stats->rx_length_errors++;
1390 return -EINVAL;
1391 }
1392
1393 if (rd->rdesc0.RSR & RSR_MAR)
1394 vptr->stats.multicast++;
1395
1396 skb = rd_info->skb;
1397 skb->dev = vptr->dev;
1398
1399 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
1400 vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
1401
1402 /*
1403 * Drop frame not meeting IEEE 802.3
1404 */
6aa20a22 1405
1da177e4
LT		 1406 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
1407 if (rd->rdesc0.RSR & RSR_RL) {
1408 stats->rx_length_errors++;
1409 return -EINVAL;
1410 }
1411 }
1412
1413 pci_action = pci_dma_sync_single_for_device;
1414
1415 velocity_rx_csum(rd, skb);
1416
1417 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
1418 velocity_iph_realign(vptr, skb, pkt_len);
1419 pci_action = pci_unmap_single;
1420 rd_info->skb = NULL;
1421 }
1422
1423 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx_buf_sz,
1424 PCI_DMA_FROMDEVICE);
1425
1426 skb_put(skb, pkt_len - 4);
6aa20a22 1427 skb->protocol = eth_type_trans(skb, skb->dev);
1da177e4
LT		 1428
1429 stats->rx_bytes += pkt_len;
1430 netif_rx(skb);
1431
1432 return 0;
1433}
1434
1435/**
1436 * velocity_alloc_rx_buf - allocate aligned receive buffer
1437 * @vptr: velocity
1438 * @idx: ring index
1439 *
1440 * Allocate a new full sized buffer for the reception of a frame and
1441 * map it into PCI space for the hardware to use. The hardware
1442 * requires *64* byte alignment of the buffer which makes life
1443 * less fun than would be ideal.
1444 */
6aa20a22 1445
1da177e4
LT		 1446static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1447{
1448 struct rx_desc *rd = &(vptr->rd_ring[idx]);
1449 struct velocity_rd_info *rd_info = &(vptr->rd_info[idx]);
1450
1451 rd_info->skb = dev_alloc_skb(vptr->rx_buf_sz + 64);
1452 if (rd_info->skb == NULL)
1453 return -ENOMEM;
1454
1455 /*
1456 * Do the gymnastics to get the buffer head for data at
1457 * 64byte alignment.
1458 */
689be439 1459 skb_reserve(rd_info->skb, (unsigned long) rd_info->skb->data & 63);
1da177e4 1460 rd_info->skb->dev = vptr->dev;
689be439 1461 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data, vptr->rx_buf_sz, PCI_DMA_FROMDEVICE);
6aa20a22 1462
1da177e4
LT		 1463 /*
1464 * Fill in the descriptor to match
6aa20a22
JG		 1465 */
1466
1da177e4
LT		 1467 *((u32 *) & (rd->rdesc0)) = 0;
1468 rd->len = cpu_to_le32(vptr->rx_buf_sz);
1469 rd->inten = 1;
1470 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1471 rd->pa_high = 0;
1472 return 0;
1473}
1474
1475/**
1476 * tx_srv - transmit interrupt service
1477 * @vptr; Velocity
1478 * @status:
1479 *
1480 * Scan the queues looking for transmitted packets that
1481 * we can complete and clean up. Update any statistics as
1482 * neccessary/
1483 */
6aa20a22 1484
1da177e4
LT		 1485static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1486{
1487 struct tx_desc *td;
1488 int qnum;
1489 int full = 0;
1490 int idx;
1491 int works = 0;
1492 struct velocity_td_info *tdinfo;
1493 struct net_device_stats *stats = &vptr->stats;
1494
1495 for (qnum = 0; qnum < vptr->num_txq; qnum++) {
6aa20a22 1496 for (idx = vptr->td_tail[qnum]; vptr->td_used[qnum] > 0;
1da177e4
LT		 1497 idx = (idx + 1) % vptr->options.numtx) {
1498
1499 /*
1500 * Get Tx Descriptor
1501 */
1502 td = &(vptr->td_rings[qnum][idx]);
1503 tdinfo = &(vptr->td_infos[qnum][idx]);
1504
1505 if (td->tdesc0.owner == OWNED_BY_NIC)
1506 break;
1507
1508 if ((works++ > 15))
1509 break;
1510
1511 if (td->tdesc0.TSR & TSR0_TERR) {
1512 stats->tx_errors++;
1513 stats->tx_dropped++;
1514 if (td->tdesc0.TSR & TSR0_CDH)
1515 stats->tx_heartbeat_errors++;
1516 if (td->tdesc0.TSR & TSR0_CRS)
1517 stats->tx_carrier_errors++;
1518 if (td->tdesc0.TSR & TSR0_ABT)
1519 stats->tx_aborted_errors++;
1520 if (td->tdesc0.TSR & TSR0_OWC)
1521 stats->tx_window_errors++;
1522 } else {
1523 stats->tx_packets++;
1524 stats->tx_bytes += tdinfo->skb->len;
1525 }
1526 velocity_free_tx_buf(vptr, tdinfo);
1527 vptr->td_used[qnum]--;
1528 }
1529 vptr->td_tail[qnum] = idx;
1530
1531 if (AVAIL_TD(vptr, qnum) < 1) {
1532 full = 1;
1533 }
1534 }
1535 /*
1536 * Look to see if we should kick the transmit network
1537 * layer for more work.
1538 */
1539 if (netif_queue_stopped(vptr->dev) && (full == 0)
1540 && (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1541 netif_wake_queue(vptr->dev);
1542 }
1543 return works;
1544}
1545
1546/**
1547 * velocity_print_link_status - link status reporting
1548 * @vptr: velocity to report on
1549 *
1550 * Turn the link status of the velocity card into a kernel log
1551 * description of the new link state, detailing speed and duplex
1552 * status
1553 */
1554
1555static void velocity_print_link_status(struct velocity_info *vptr)
1556{
1557
1558 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1559 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1560 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1561 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link autonegation", vptr->dev->name);
1562
1563 if (vptr->mii_status & VELOCITY_SPEED_1000)
1564 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1565 else if (vptr->mii_status & VELOCITY_SPEED_100)
1566 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1567 else
1568 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1569
1570 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1571 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1572 else
1573 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1574 } else {
1575 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1576 switch (vptr->options.spd_dpx) {
1577 case SPD_DPX_100_HALF:
1578 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1579 break;
1580 case SPD_DPX_100_FULL:
1581 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1582 break;
1583 case SPD_DPX_10_HALF:
1584 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1585 break;
1586 case SPD_DPX_10_FULL:
1587 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1588 break;
1589 default:
1590 break;
1591 }
1592 }
1593}
1594
1595/**
1596 * velocity_error - handle error from controller
1597 * @vptr: velocity
1598 * @status: card status
1599 *
1600 * Process an error report from the hardware and attempt to recover
6aa20a22 1601 * the card itself. At the moment we cannot recover from some
1da177e4
LT		 1602 * theoretically impossible errors but this could be fixed using
1603 * the pci_device_failed logic to bounce the hardware
1604 *
1605 */
6aa20a22 1606
1da177e4
LT		 1607static void velocity_error(struct velocity_info *vptr, int status)
1608{
1609
1610 if (status & ISR_TXSTLI) {
1611 struct mac_regs __iomem * regs = vptr->mac_regs;
1612
1613 printk(KERN_ERR "TD structure errror TDindex=%hx\n", readw(&regs->TDIdx[0]));
1614 BYTE_REG_BITS_ON(TXESR_TDSTR, &regs->TXESR);
1615 writew(TRDCSR_RUN, &regs->TDCSRClr);
1616 netif_stop_queue(vptr->dev);
6aa20a22 1617
1da177e4
LT		 1618 /* FIXME: port over the pci_device_failed code and use it
1619 here */
1620 }
1621
1622 if (status & ISR_SRCI) {
1623 struct mac_regs __iomem * regs = vptr->mac_regs;
1624 int linked;
1625
1626 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1627 vptr->mii_status = check_connection_type(regs);
1628
1629 /*
6aa20a22 1630 * If it is a 3119, disable frame bursting in
1da177e4
LT		 1631 * halfduplex mode and enable it in fullduplex
1632 * mode
1633 */
1634 if (vptr->rev_id < REV_ID_VT3216_A0) {
1635 if (vptr->mii_status | VELOCITY_DUPLEX_FULL)
1636 BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
1637 else
1638 BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
1639 }
1640 /*
1641 * Only enable CD heart beat counter in 10HD mode
1642 */
1643 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10)) {
1644 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
1645 } else {
1646 BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
1647 }
1648 }
1649 /*
1650 * Get link status from PHYSR0
1651 */
1652 linked = readb(&regs->PHYSR0) & PHYSR0_LINKGD;
1653
1654 if (linked) {
1655 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
8a22dddb 1656 netif_carrier_on(vptr->dev);
1da177e4
LT		 1657 } else {
1658 vptr->mii_status |= VELOCITY_LINK_FAIL;
8a22dddb 1659 netif_carrier_off(vptr->dev);
1da177e4
LT		 1660 }
1661
1662 velocity_print_link_status(vptr);
1663 enable_flow_control_ability(vptr);
1664
1665 /*
6aa20a22 1666 * Re-enable auto-polling because SRCI will disable
1da177e4
LT		 1667 * auto-polling
1668 */
6aa20a22 1669
1da177e4
LT		 1670 enable_mii_autopoll(regs);
1671
1672 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1673 netif_stop_queue(vptr->dev);
1674 else
1675 netif_wake_queue(vptr->dev);
1676
1677 };
1678 if (status & ISR_MIBFI)
1679 velocity_update_hw_mibs(vptr);
1680 if (status & ISR_LSTEI)
1681 mac_rx_queue_wake(vptr->mac_regs);
1682}
1683
1684/**
1685 * velocity_free_tx_buf - free transmit buffer
1686 * @vptr: velocity
1687 * @tdinfo: buffer
1688 *
1689 * Release an transmit buffer. If the buffer was preallocated then
1690 * recycle it, if not then unmap the buffer.
1691 */
6aa20a22 1692
1da177e4
LT		 1693static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *tdinfo)
1694{
1695 struct sk_buff *skb = tdinfo->skb;
1696 int i;
1697
1698 /*
1699 * Don't unmap the pre-allocated tx_bufs
1700 */
1701 if (tdinfo->skb_dma && (tdinfo->skb_dma[0] != tdinfo->buf_dma)) {
1702
1703 for (i = 0; i < tdinfo->nskb_dma; i++) {
1704#ifdef VELOCITY_ZERO_COPY_SUPPORT
1705 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], td->tdesc1.len, PCI_DMA_TODEVICE);
1706#else
1707 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], skb->len, PCI_DMA_TODEVICE);
1708#endif
1709 tdinfo->skb_dma[i] = 0;
1710 }
1711 }
1712 dev_kfree_skb_irq(skb);
1713 tdinfo->skb = NULL;
1714}
1715
1716/**
1717 * velocity_open - interface activation callback
1718 * @dev: network layer device to open
1719 *
1720 * Called when the network layer brings the interface up. Returns
1721 * a negative posix error code on failure, or zero on success.
1722 *
1723 * All the ring allocation and set up is done on open for this
1724 * adapter to minimise memory usage when inactive
1725 */
6aa20a22 1726
1da177e4
LT		 1727static int velocity_open(struct net_device *dev)
1728{
8ab6f3f7 1729 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 1730 int ret;
1731
1732 vptr->rx_buf_sz = (dev->mtu <= 1504 ? PKT_BUF_SZ : dev->mtu + 32);
1733
1734 ret = velocity_init_rings(vptr);
1735 if (ret < 0)
1736 goto out;
1737
1738 ret = velocity_init_rd_ring(vptr);
1739 if (ret < 0)
1740 goto err_free_desc_rings;
1741
1742 ret = velocity_init_td_ring(vptr);
1743 if (ret < 0)
1744 goto err_free_rd_ring;
6aa20a22
JG		 1745
1746 /* Ensure chip is running */
1da177e4 1747 pci_set_power_state(vptr->pdev, PCI_D0);
6aa20a22 1748
1da177e4
LT		 1749 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1750
1fb9df5d 1751 ret = request_irq(vptr->pdev->irq, &velocity_intr, IRQF_SHARED,
1da177e4
LT		 1752 dev->name, dev);
1753 if (ret < 0) {
1754 /* Power down the chip */
1755 pci_set_power_state(vptr->pdev, PCI_D3hot);
1756 goto err_free_td_ring;
1757 }
1758
1759 mac_enable_int(vptr->mac_regs);
1760 netif_start_queue(dev);
1761 vptr->flags |= VELOCITY_FLAGS_OPENED;
1762out:
1763 return ret;
1764
1765err_free_td_ring:
1766 velocity_free_td_ring(vptr);
1767err_free_rd_ring:
1768 velocity_free_rd_ring(vptr);
1769err_free_desc_rings:
1770 velocity_free_rings(vptr);
1771 goto out;
1772}
1773
6aa20a22 1774/**
1da177e4
LT		 1775 * velocity_change_mtu - MTU change callback
1776 * @dev: network device
1777 * @new_mtu: desired MTU
1778 *
1779 * Handle requests from the networking layer for MTU change on
1780 * this interface. It gets called on a change by the network layer.
1781 * Return zero for success or negative posix error code.
1782 */
6aa20a22 1783
1da177e4
LT		 1784static int velocity_change_mtu(struct net_device *dev, int new_mtu)
1785{
8ab6f3f7 1786 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 1787 unsigned long flags;
1788 int oldmtu = dev->mtu;
1789 int ret = 0;
1790
1791 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
6aa20a22 1792 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
1da177e4
LT		 1793 vptr->dev->name);
1794 return -EINVAL;
1795 }
1796
1797 if (new_mtu != oldmtu) {
1798 spin_lock_irqsave(&vptr->lock, flags);
1799
1800 netif_stop_queue(dev);
1801 velocity_shutdown(vptr);
1802
1803 velocity_free_td_ring(vptr);
1804 velocity_free_rd_ring(vptr);
1805
1806 dev->mtu = new_mtu;
1807 if (new_mtu > 8192)
1808 vptr->rx_buf_sz = 9 * 1024;
1809 else if (new_mtu > 4096)
1810 vptr->rx_buf_sz = 8192;
1811 else
1812 vptr->rx_buf_sz = 4 * 1024;
1813
1814 ret = velocity_init_rd_ring(vptr);
1815 if (ret < 0)
1816 goto out_unlock;
1817
1818 ret = velocity_init_td_ring(vptr);
1819 if (ret < 0)
1820 goto out_unlock;
1821
1822 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1823
1824 mac_enable_int(vptr->mac_regs);
1825 netif_start_queue(dev);
1826out_unlock:
1827 spin_unlock_irqrestore(&vptr->lock, flags);
1828 }
1829
1830 return ret;
1831}
1832
1833/**
1834 * velocity_shutdown - shut down the chip
1835 * @vptr: velocity to deactivate
1836 *
1837 * Shuts down the internal operations of the velocity and
1838 * disables interrupts, autopolling, transmit and receive
1839 */
6aa20a22 1840
1da177e4
LT		 1841static void velocity_shutdown(struct velocity_info *vptr)
1842{
1843 struct mac_regs __iomem * regs = vptr->mac_regs;
1844 mac_disable_int(regs);
1845 writel(CR0_STOP, &regs->CR0Set);
1846 writew(0xFFFF, &regs->TDCSRClr);
1847 writeb(0xFF, &regs->RDCSRClr);
1848 safe_disable_mii_autopoll(regs);
1849 mac_clear_isr(regs);
1850}
1851
1852/**
1853 * velocity_close - close adapter callback
1854 * @dev: network device
1855 *
1856 * Callback from the network layer when the velocity is being
1857 * deactivated by the network layer
1858 */
1859
1860static int velocity_close(struct net_device *dev)
1861{
8ab6f3f7 1862 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 1863
1864 netif_stop_queue(dev);
1865 velocity_shutdown(vptr);
1866
1867 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
1868 velocity_get_ip(vptr);
1869 if (dev->irq != 0)
1870 free_irq(dev->irq, dev);
6aa20a22 1871
1da177e4
LT		 1872 /* Power down the chip */
1873 pci_set_power_state(vptr->pdev, PCI_D3hot);
6aa20a22 1874
1da177e4
LT		 1875 /* Free the resources */
1876 velocity_free_td_ring(vptr);
1877 velocity_free_rd_ring(vptr);
1878 velocity_free_rings(vptr);
1879
1880 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
1881 return 0;
1882}
1883
1884/**
1885 * velocity_xmit - transmit packet callback
1886 * @skb: buffer to transmit
1887 * @dev: network device
1888 *
1889 * Called by the networ layer to request a packet is queued to
1890 * the velocity. Returns zero on success.
1891 */
6aa20a22 1892
1da177e4
LT		 1893static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
1894{
8ab6f3f7 1895 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 1896 int qnum = 0;
1897 struct tx_desc *td_ptr;
1898 struct velocity_td_info *tdinfo;
1899 unsigned long flags;
1900 int index;
1901
1902 int pktlen = skb->len;
1903
364c6bad
HX		 1904#ifdef VELOCITY_ZERO_COPY_SUPPORT
1905 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
1906 kfree_skb(skb);
1907 return 0;
1908 }
1909#endif
1910
1da177e4
LT		 1911 spin_lock_irqsave(&vptr->lock, flags);
1912
1913 index = vptr->td_curr[qnum];
1914 td_ptr = &(vptr->td_rings[qnum][index]);
1915 tdinfo = &(vptr->td_infos[qnum][index]);
1916
1917 td_ptr->tdesc1.TCPLS = TCPLS_NORMAL;
1918 td_ptr->tdesc1.TCR = TCR0_TIC;
1919 td_ptr->td_buf[0].queue = 0;
1920
1921 /*
6aa20a22 1922 * Pad short frames.
1da177e4
LT		 1923 */
1924 if (pktlen < ETH_ZLEN) {
1925 /* Cannot occur until ZC support */
1da177e4
LT		 1926 pktlen = ETH_ZLEN;
1927 memcpy(tdinfo->buf, skb->data, skb->len);
1928 memset(tdinfo->buf + skb->len, 0, ETH_ZLEN - skb->len);
1929 tdinfo->skb = skb;
1930 tdinfo->skb_dma[0] = tdinfo->buf_dma;
1931 td_ptr->tdesc0.pktsize = pktlen;
1932 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
1933 td_ptr->td_buf[0].pa_high = 0;
1934 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
1935 tdinfo->nskb_dma = 1;
1936 td_ptr->tdesc1.CMDZ = 2;
1937 } else
1938#ifdef VELOCITY_ZERO_COPY_SUPPORT
1939 if (skb_shinfo(skb)->nr_frags > 0) {
1940 int nfrags = skb_shinfo(skb)->nr_frags;
1941 tdinfo->skb = skb;
1942 if (nfrags > 6) {
1da177e4
LT		 1943 memcpy(tdinfo->buf, skb->data, skb->len);
1944 tdinfo->skb_dma[0] = tdinfo->buf_dma;
6aa20a22 1945 td_ptr->tdesc0.pktsize =
1da177e4
LT		 1946 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
1947 td_ptr->td_buf[0].pa_high = 0;
1948 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
1949 tdinfo->nskb_dma = 1;
1950 td_ptr->tdesc1.CMDZ = 2;
1951 } else {
1952 int i = 0;
1953 tdinfo->nskb_dma = 0;
1954 tdinfo->skb_dma[i] = pci_map_single(vptr->pdev, skb->data, skb->len - skb->data_len, PCI_DMA_TODEVICE);
1955
1956 td_ptr->tdesc0.pktsize = pktlen;
1957
1958 /* FIXME: support 48bit DMA later */
1959 td_ptr->td_buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma);
1960 td_ptr->td_buf[i].pa_high = 0;
1961 td_ptr->td_buf[i].bufsize = skb->len->skb->data_len;
1962
1963 for (i = 0; i < nfrags; i++) {
1964 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1965 void *addr = ((void *) page_address(frag->page + frag->page_offset));
1966
1967 tdinfo->skb_dma[i + 1] = pci_map_single(vptr->pdev, addr, frag->size, PCI_DMA_TODEVICE);
1968
1969 td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
1970 td_ptr->td_buf[i + 1].pa_high = 0;
1971 td_ptr->td_buf[i + 1].bufsize = frag->size;
1972 }
1973 tdinfo->nskb_dma = i - 1;
1974 td_ptr->tdesc1.CMDZ = i;
1975 }
1976
1977 } else
1978#endif
1979 {
1980 /*
1981 * Map the linear network buffer into PCI space and
1982 * add it to the transmit ring.
1983 */
1984 tdinfo->skb = skb;
1985 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
1986 td_ptr->tdesc0.pktsize = pktlen;
1987 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
1988 td_ptr->td_buf[0].pa_high = 0;
1989 td_ptr->td_buf[0].bufsize = td_ptr->tdesc0.pktsize;
1990 tdinfo->nskb_dma = 1;
1991 td_ptr->tdesc1.CMDZ = 2;
1992 }
1993
1994 if (vptr->flags & VELOCITY_FLAGS_TAGGING) {
1995 td_ptr->tdesc1.pqinf.VID = (vptr->options.vid & 0xfff);
1996 td_ptr->tdesc1.pqinf.priority = 0;
1997 td_ptr->tdesc1.pqinf.CFI = 0;
1998 td_ptr->tdesc1.TCR |= TCR0_VETAG;
1999 }
2000
2001 /*
2002 * Handle hardware checksum
2003 */
2004 if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
84fa7933 2005 && (skb->ip_summed == CHECKSUM_PARTIAL)) {
1da177e4
LT		 2006 struct iphdr *ip = skb->nh.iph;
2007 if (ip->protocol == IPPROTO_TCP)
2008 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2009 else if (ip->protocol == IPPROTO_UDP)
2010 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2011 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2012 }
2013 {
2014
2015 int prev = index - 1;
2016
2017 if (prev < 0)
2018 prev = vptr->options.numtx - 1;
2019 td_ptr->tdesc0.owner = OWNED_BY_NIC;
2020 vptr->td_used[qnum]++;
2021 vptr->td_curr[qnum] = (index + 1) % vptr->options.numtx;
2022
2023 if (AVAIL_TD(vptr, qnum) < 1)
2024 netif_stop_queue(dev);
2025
2026 td_ptr = &(vptr->td_rings[qnum][prev]);
2027 td_ptr->td_buf[0].queue = 1;
2028 mac_tx_queue_wake(vptr->mac_regs, qnum);
2029 }
2030 dev->trans_start = jiffies;
2031 spin_unlock_irqrestore(&vptr->lock, flags);
2032 return 0;
2033}
2034
2035/**
2036 * velocity_intr - interrupt callback
2037 * @irq: interrupt number
2038 * @dev_instance: interrupting device
1da177e4
LT		 2039 *
2040 * Called whenever an interrupt is generated by the velocity
2041 * adapter IRQ line. We may not be the source of the interrupt
2042 * and need to identify initially if we are, and if not exit as
2043 * efficiently as possible.
2044 */
6aa20a22 2045
7d12e780 2046static int velocity_intr(int irq, void *dev_instance)
1da177e4
LT		 2047{
2048 struct net_device *dev = dev_instance;
8ab6f3f7 2049 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2050 u32 isr_status;
2051 int max_count = 0;
2052
2053
2054 spin_lock(&vptr->lock);
2055 isr_status = mac_read_isr(vptr->mac_regs);
2056
2057 /* Not us ? */
2058 if (isr_status == 0) {
2059 spin_unlock(&vptr->lock);
2060 return IRQ_NONE;
2061 }
2062
2063 mac_disable_int(vptr->mac_regs);
2064
2065 /*
2066 * Keep processing the ISR until we have completed
2067 * processing and the isr_status becomes zero
2068 */
6aa20a22 2069
1da177e4
LT		 2070 while (isr_status != 0) {
2071 mac_write_isr(vptr->mac_regs, isr_status);
2072 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2073 velocity_error(vptr, isr_status);
2074 if (isr_status & (ISR_PRXI | ISR_PPRXI))
2075 max_count += velocity_rx_srv(vptr, isr_status);
2076 if (isr_status & (ISR_PTXI | ISR_PPTXI))
2077 max_count += velocity_tx_srv(vptr, isr_status);
2078 isr_status = mac_read_isr(vptr->mac_regs);
2079 if (max_count > vptr->options.int_works)
2080 {
6aa20a22 2081 printk(KERN_WARNING "%s: excessive work at interrupt.\n",
1da177e4
LT		 2082 dev->name);
2083 max_count = 0;
2084 }
2085 }
2086 spin_unlock(&vptr->lock);
2087 mac_enable_int(vptr->mac_regs);
2088 return IRQ_HANDLED;
2089
2090}
2091
2092
2093/**
2094 * velocity_set_multi - filter list change callback
2095 * @dev: network device
2096 *
2097 * Called by the network layer when the filter lists need to change
2098 * for a velocity adapter. Reload the CAMs with the new address
2099 * filter ruleset.
2100 */
6aa20a22 2101
1da177e4
LT		 2102static void velocity_set_multi(struct net_device *dev)
2103{
8ab6f3f7 2104 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2105 struct mac_regs __iomem * regs = vptr->mac_regs;
2106 u8 rx_mode;
2107 int i;
2108 struct dev_mc_list *mclist;
2109
2110 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1da177e4
LT		 2111 writel(0xffffffff, &regs->MARCAM[0]);
2112 writel(0xffffffff, &regs->MARCAM[4]);
2113 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
2114 } else if ((dev->mc_count > vptr->multicast_limit)
2115 || (dev->flags & IFF_ALLMULTI)) {
2116 writel(0xffffffff, &regs->MARCAM[0]);
2117 writel(0xffffffff, &regs->MARCAM[4]);
2118 rx_mode = (RCR_AM | RCR_AB);
2119 } else {
2120 int offset = MCAM_SIZE - vptr->multicast_limit;
2121 mac_get_cam_mask(regs, vptr->mCAMmask, VELOCITY_MULTICAST_CAM);
2122
2123 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
2124 mac_set_cam(regs, i + offset, mclist->dmi_addr, VELOCITY_MULTICAST_CAM);
2125 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
2126 }
2127
2128 mac_set_cam_mask(regs, vptr->mCAMmask, VELOCITY_MULTICAST_CAM);
2129 rx_mode = (RCR_AM | RCR_AB);
2130 }
2131 if (dev->mtu > 1500)
2132 rx_mode |= RCR_AL;
2133
2134 BYTE_REG_BITS_ON(rx_mode, &regs->RCR);
2135
2136}
2137
2138/**
2139 * velocity_get_status - statistics callback
2140 * @dev: network device
2141 *
2142 * Callback from the network layer to allow driver statistics
2143 * to be resynchronized with hardware collected state. In the
2144 * case of the velocity we need to pull the MIB counters from
2145 * the hardware into the counters before letting the network
2146 * layer display them.
2147 */
6aa20a22 2148
1da177e4
LT		 2149static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2150{
8ab6f3f7 2151 struct velocity_info *vptr = netdev_priv(dev);
6aa20a22 2152
1da177e4
LT		 2153 /* If the hardware is down, don't touch MII */
2154 if(!netif_running(dev))
2155 return &vptr->stats;
2156
2157 spin_lock_irq(&vptr->lock);
2158 velocity_update_hw_mibs(vptr);
2159 spin_unlock_irq(&vptr->lock);
2160
2161 vptr->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2162 vptr->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2163 vptr->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
2164
2165// unsigned long rx_dropped; /* no space in linux buffers */
2166 vptr->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
2167 /* detailed rx_errors: */
2168// unsigned long rx_length_errors;
2169// unsigned long rx_over_errors; /* receiver ring buff overflow */
2170 vptr->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
2171// unsigned long rx_frame_errors; /* recv'd frame alignment error */
2172// unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2173// unsigned long rx_missed_errors; /* receiver missed packet */
2174
2175 /* detailed tx_errors */
2176// unsigned long tx_fifo_errors;
2177
2178 return &vptr->stats;
2179}
2180
2181
2182/**
2183 * velocity_ioctl - ioctl entry point
2184 * @dev: network device
2185 * @rq: interface request ioctl
2186 * @cmd: command code
2187 *
2188 * Called when the user issues an ioctl request to the network
2189 * device in question. The velocity interface supports MII.
2190 */
6aa20a22 2191
1da177e4
LT		 2192static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2193{
8ab6f3f7 2194 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2195 int ret;
2196
2197 /* If we are asked for information and the device is power
2198 saving then we need to bring the device back up to talk to it */
6aa20a22 2199
1da177e4
LT		 2200 if (!netif_running(dev))
2201 pci_set_power_state(vptr->pdev, PCI_D0);
6aa20a22 2202
1da177e4
LT		 2203 switch (cmd) {
2204 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2205 case SIOCGMIIREG: /* Read MII PHY register. */
2206 case SIOCSMIIREG: /* Write to MII PHY register. */
2207 ret = velocity_mii_ioctl(dev, rq, cmd);
2208 break;
2209
2210 default:
2211 ret = -EOPNOTSUPP;
2212 }
2213 if (!netif_running(dev))
2214 pci_set_power_state(vptr->pdev, PCI_D3hot);
6aa20a22
JG		 2215
2216
1da177e4
LT		 2217 return ret;
2218}
2219
2220/*
2221 * Definition for our device driver. The PCI layer interface
2222 * uses this to handle all our card discover and plugging
2223 */
6aa20a22 2224
1da177e4
LT		 2225static struct pci_driver velocity_driver = {
2226 .name = VELOCITY_NAME,
2227 .id_table = velocity_id_table,
2228 .probe = velocity_found1,
2229 .remove = __devexit_p(velocity_remove1),
2230#ifdef CONFIG_PM
2231 .suspend = velocity_suspend,
2232 .resume = velocity_resume,
2233#endif
2234};
2235
2236/**
2237 * velocity_init_module - load time function
2238 *
2239 * Called when the velocity module is loaded. The PCI driver
2240 * is registered with the PCI layer, and in turn will call
2241 * the probe functions for each velocity adapter installed
2242 * in the system.
2243 */
6aa20a22 2244
1da177e4
LT		 2245static int __init velocity_init_module(void)
2246{
2247 int ret;
2248
2249 velocity_register_notifier();
29917620 2250 ret = pci_register_driver(&velocity_driver);
1da177e4
LT		 2251 if (ret < 0)
2252 velocity_unregister_notifier();
2253 return ret;
2254}
2255
2256/**
2257 * velocity_cleanup - module unload
2258 *
2259 * When the velocity hardware is unloaded this function is called.
6aa20a22 2260 * It will clean up the notifiers and the unregister the PCI
1da177e4
LT		 2261 * driver interface for this hardware. This in turn cleans up
2262 * all discovered interfaces before returning from the function
2263 */
6aa20a22 2264
1da177e4
LT		 2265static void __exit velocity_cleanup_module(void)
2266{
2267 velocity_unregister_notifier();
2268 pci_unregister_driver(&velocity_driver);
2269}
2270
2271module_init(velocity_init_module);
2272module_exit(velocity_cleanup_module);
2273
2274
2275/*
2276 * MII access , media link mode setting functions
2277 */
6aa20a22
JG		 2278
2279
1da177e4
LT		 2280/**
2281 * mii_init - set up MII
2282 * @vptr: velocity adapter
2283 * @mii_status: links tatus
2284 *
2285 * Set up the PHY for the current link state.
2286 */
6aa20a22 2287
1da177e4
LT		 2288static void mii_init(struct velocity_info *vptr, u32 mii_status)
2289{
2290 u16 BMCR;
2291
2292 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
2293 case PHYID_CICADA_CS8201:
2294 /*
2295 * Reset to hardware default
2296 */
2297 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2298 /*
2299 * Turn on ECHODIS bit in NWay-forced full mode and turn it
6aa20a22 2300 * off it in NWay-forced half mode for NWay-forced v.s.
1da177e4
LT		 2301 * legacy-forced issue.
2302 */
2303 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2304 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2305 else
2306 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2307 /*
2308 * Turn on Link/Activity LED enable bit for CIS8201
2309 */
2310 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
2311 break;
2312 case PHYID_VT3216_32BIT:
2313 case PHYID_VT3216_64BIT:
2314 /*
2315 * Reset to hardware default
2316 */
2317 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2318 /*
2319 * Turn on ECHODIS bit in NWay-forced full mode and turn it
6aa20a22 2320 * off it in NWay-forced half mode for NWay-forced v.s.
1da177e4
LT		 2321 * legacy-forced issue
2322 */
2323 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2324 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2325 else
2326 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2327 break;
2328
2329 case PHYID_MARVELL_1000:
2330 case PHYID_MARVELL_1000S:
2331 /*
6aa20a22 2332 * Assert CRS on Transmit
1da177e4
LT		 2333 */
2334 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
2335 /*
6aa20a22 2336 * Reset to hardware default
1da177e4
LT		 2337 */
2338 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2339 break;
2340 default:
2341 ;
2342 }
2343 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
2344 if (BMCR & BMCR_ISO) {
2345 BMCR &= ~BMCR_ISO;
2346 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
2347 }
2348}
2349
2350/**
2351 * safe_disable_mii_autopoll - autopoll off
2352 * @regs: velocity registers
2353 *
2354 * Turn off the autopoll and wait for it to disable on the chip
2355 */
6aa20a22 2356
1da177e4
LT		 2357static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs)
2358{
2359 u16 ww;
2360
2361 /* turn off MAUTO */
2362 writeb(0, &regs->MIICR);
2363 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2364 udelay(1);
2365 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
2366 break;
2367 }
2368}
2369
2370/**
2371 * enable_mii_autopoll - turn on autopolling
2372 * @regs: velocity registers
2373 *
2374 * Enable the MII link status autopoll feature on the Velocity
2375 * hardware. Wait for it to enable.
2376 */
2377
2378static void enable_mii_autopoll(struct mac_regs __iomem * regs)
2379{
2380 int ii;
2381
2382 writeb(0, &(regs->MIICR));
2383 writeb(MIIADR_SWMPL, &regs->MIIADR);
2384
2385 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2386 udelay(1);
2387 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
2388 break;
2389 }
2390
2391 writeb(MIICR_MAUTO, &regs->MIICR);
2392
2393 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2394 udelay(1);
2395 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
2396 break;
2397 }
2398
2399}
2400
2401/**
2402 * velocity_mii_read - read MII data
2403 * @regs: velocity registers
2404 * @index: MII register index
2405 * @data: buffer for received data
2406 *
2407 * Perform a single read of an MII 16bit register. Returns zero
2408 * on success or -ETIMEDOUT if the PHY did not respond.
2409 */
6aa20a22 2410
1da177e4
LT		 2411static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
2412{
2413 u16 ww;
2414
2415 /*
2416 * Disable MIICR_MAUTO, so that mii addr can be set normally
2417 */
2418 safe_disable_mii_autopoll(regs);
2419
2420 writeb(index, &regs->MIIADR);
2421
2422 BYTE_REG_BITS_ON(MIICR_RCMD, &regs->MIICR);
2423
2424 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2425 if (!(readb(&regs->MIICR) & MIICR_RCMD))
2426 break;
2427 }
2428
2429 *data = readw(&regs->MIIDATA);
2430
2431 enable_mii_autopoll(regs);
2432 if (ww == W_MAX_TIMEOUT)
2433 return -ETIMEDOUT;
2434 return 0;
2435}
2436
2437/**
2438 * velocity_mii_write - write MII data
2439 * @regs: velocity registers
2440 * @index: MII register index
2441 * @data: 16bit data for the MII register
2442 *
2443 * Perform a single write to an MII 16bit register. Returns zero
2444 * on success or -ETIMEDOUT if the PHY did not respond.
2445 */
6aa20a22 2446
1da177e4
LT		 2447static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
2448{
2449 u16 ww;
2450
2451 /*
2452 * Disable MIICR_MAUTO, so that mii addr can be set normally
2453 */
2454 safe_disable_mii_autopoll(regs);
2455
2456 /* MII reg offset */
2457 writeb(mii_addr, &regs->MIIADR);
2458 /* set MII data */
2459 writew(data, &regs->MIIDATA);
2460
2461 /* turn on MIICR_WCMD */
2462 BYTE_REG_BITS_ON(MIICR_WCMD, &regs->MIICR);
2463
2464 /* W_MAX_TIMEOUT is the timeout period */
2465 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2466 udelay(5);
2467 if (!(readb(&regs->MIICR) & MIICR_WCMD))
2468 break;
2469 }
2470 enable_mii_autopoll(regs);
2471
2472 if (ww == W_MAX_TIMEOUT)
2473 return -ETIMEDOUT;
2474 return 0;
2475}
2476
2477/**
2478 * velocity_get_opt_media_mode - get media selection
2479 * @vptr: velocity adapter
2480 *
2481 * Get the media mode stored in EEPROM or module options and load
2482 * mii_status accordingly. The requested link state information
2483 * is also returned.
2484 */
6aa20a22 2485
1da177e4
LT		 2486static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
2487{
2488 u32 status = 0;
2489
2490 switch (vptr->options.spd_dpx) {
2491 case SPD_DPX_AUTO:
2492 status = VELOCITY_AUTONEG_ENABLE;
2493 break;
2494 case SPD_DPX_100_FULL:
2495 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
2496 break;
2497 case SPD_DPX_10_FULL:
2498 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
2499 break;
2500 case SPD_DPX_100_HALF:
2501 status = VELOCITY_SPEED_100;
2502 break;
2503 case SPD_DPX_10_HALF:
2504 status = VELOCITY_SPEED_10;
2505 break;
2506 }
2507 vptr->mii_status = status;
2508 return status;
2509}
2510
2511/**
2512 * mii_set_auto_on - autonegotiate on
2513 * @vptr: velocity
2514 *
2515 * Enable autonegotation on this interface
2516 */
6aa20a22 2517
1da177e4
LT		 2518static void mii_set_auto_on(struct velocity_info *vptr)
2519{
2520 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
2521 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2522 else
2523 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2524}
2525
2526
2527/*
2528static void mii_set_auto_off(struct velocity_info * vptr)
2529{
2530 MII_REG_BITS_OFF(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2531}
2532*/
2533
2534/**
2535 * set_mii_flow_control - flow control setup
2536 * @vptr: velocity interface
2537 *
2538 * Set up the flow control on this interface according to
2539 * the supplied user/eeprom options.
2540 */
6aa20a22 2541
1da177e4
LT		 2542static void set_mii_flow_control(struct velocity_info *vptr)
2543{
2544 /*Enable or Disable PAUSE in ANAR */
2545 switch (vptr->options.flow_cntl) {
2546 case FLOW_CNTL_TX:
2547 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2548 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2549 break;
2550
2551 case FLOW_CNTL_RX:
2552 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2553 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2554 break;
2555
2556 case FLOW_CNTL_TX_RX:
2557 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2558 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2559 break;
2560
2561 case FLOW_CNTL_DISABLE:
2562 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2563 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2564 break;
2565 default:
2566 break;
2567 }
2568}
2569
2570/**
2571 * velocity_set_media_mode - set media mode
2572 * @mii_status: old MII link state
2573 *
2574 * Check the media link state and configure the flow control
2575 * PHY and also velocity hardware setup accordingly. In particular
2576 * we need to set up CD polling and frame bursting.
2577 */
6aa20a22 2578
1da177e4
LT		 2579static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
2580{
2581 u32 curr_status;
2582 struct mac_regs __iomem * regs = vptr->mac_regs;
2583
2584 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
2585 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
2586
2587 /* Set mii link status */
2588 set_mii_flow_control(vptr);
2589
2590 /*
2591 Check if new status is consisent with current status
2592 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
2593 || (mii_status==curr_status)) {
2594 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
2595 vptr->mii_status=check_connection_type(vptr->mac_regs);
2596 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
2597 return 0;
2598 }
2599 */
2600
2601 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) {
2602 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2603 }
2604
2605 /*
2606 * If connection type is AUTO
2607 */
2608 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
2609 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
2610 /* clear force MAC mode bit */
2611 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, &regs->CHIPGCR);
2612 /* set duplex mode of MAC according to duplex mode of MII */
2613 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
2614 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2615 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
2616
2617 /* enable AUTO-NEGO mode */
2618 mii_set_auto_on(vptr);
2619 } else {
2620 u16 ANAR;
2621 u8 CHIPGCR;
2622
2623 /*
2624 * 1. if it's 3119, disable frame bursting in halfduplex mode
2625 * and enable it in fullduplex mode
2626 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
2627 * 3. only enable CD heart beat counter in 10HD mode
2628 */
2629
2630 /* set force MAC mode bit */
2631 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
2632
2633 CHIPGCR = readb(&regs->CHIPGCR);
2634 CHIPGCR &= ~CHIPGCR_FCGMII;
2635
2636 if (mii_status & VELOCITY_DUPLEX_FULL) {
2637 CHIPGCR |= CHIPGCR_FCFDX;
2638 writeb(CHIPGCR, &regs->CHIPGCR);
2639 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
2640 if (vptr->rev_id < REV_ID_VT3216_A0)
2641 BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
2642 } else {
2643 CHIPGCR &= ~CHIPGCR_FCFDX;
2644 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
2645 writeb(CHIPGCR, &regs->CHIPGCR);
2646 if (vptr->rev_id < REV_ID_VT3216_A0)
2647 BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
2648 }
2649
2650 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2651
2652 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10)) {
2653 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
2654 } else {
2655 BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
2656 }
2657 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
2658 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
2659 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
2660 if (mii_status & VELOCITY_SPEED_100) {
2661 if (mii_status & VELOCITY_DUPLEX_FULL)
2662 ANAR |= ANAR_TXFD;
2663 else
2664 ANAR |= ANAR_TX;
2665 } else {
2666 if (mii_status & VELOCITY_DUPLEX_FULL)
2667 ANAR |= ANAR_10FD;
2668 else
2669 ANAR |= ANAR_10;
2670 }
2671 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
2672 /* enable AUTO-NEGO mode */
2673 mii_set_auto_on(vptr);
2674 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
2675 }
2676 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
2677 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
2678 return VELOCITY_LINK_CHANGE;
2679}
2680
2681/**
2682 * mii_check_media_mode - check media state
2683 * @regs: velocity registers
2684 *
2685 * Check the current MII status and determine the link status
2686 * accordingly
2687 */
6aa20a22 2688
1da177e4
LT		 2689static u32 mii_check_media_mode(struct mac_regs __iomem * regs)
2690{
2691 u32 status = 0;
2692 u16 ANAR;
2693
2694 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
2695 status |= VELOCITY_LINK_FAIL;
2696
2697 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
2698 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
2699 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
2700 status |= (VELOCITY_SPEED_1000);
2701 else {
2702 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2703 if (ANAR & ANAR_TXFD)
2704 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
2705 else if (ANAR & ANAR_TX)
2706 status |= VELOCITY_SPEED_100;
2707 else if (ANAR & ANAR_10FD)
2708 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
2709 else
2710 status |= (VELOCITY_SPEED_10);
2711 }
2712
2713 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2714 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2715 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2716 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2717 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2718 status |= VELOCITY_AUTONEG_ENABLE;
2719 }
2720 }
2721
2722 return status;
2723}
2724
2725static u32 check_connection_type(struct mac_regs __iomem * regs)
2726{
2727 u32 status = 0;
2728 u8 PHYSR0;
2729 u16 ANAR;
2730 PHYSR0 = readb(&regs->PHYSR0);
2731
2732 /*
2733 if (!(PHYSR0 & PHYSR0_LINKGD))
2734 status|=VELOCITY_LINK_FAIL;
2735 */
2736
2737 if (PHYSR0 & PHYSR0_FDPX)
2738 status |= VELOCITY_DUPLEX_FULL;
2739
2740 if (PHYSR0 & PHYSR0_SPDG)
2741 status |= VELOCITY_SPEED_1000;
59b693fb 2742 else if (PHYSR0 & PHYSR0_SPD10)
1da177e4
LT		 2743 status |= VELOCITY_SPEED_10;
2744 else
2745 status |= VELOCITY_SPEED_100;
2746
2747 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2748 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2749 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2750 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2751 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2752 status |= VELOCITY_AUTONEG_ENABLE;
2753 }
2754 }
2755
2756 return status;
2757}
2758
2759/**
2760 * enable_flow_control_ability - flow control
2761 * @vptr: veloity to configure
2762 *
2763 * Set up flow control according to the flow control options
2764 * determined by the eeprom/configuration.
2765 */
2766
2767static void enable_flow_control_ability(struct velocity_info *vptr)
2768{
2769
2770 struct mac_regs __iomem * regs = vptr->mac_regs;
2771
2772 switch (vptr->options.flow_cntl) {
2773
2774 case FLOW_CNTL_DEFAULT:
2775 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, &regs->PHYSR0))
2776 writel(CR0_FDXRFCEN, &regs->CR0Set);
2777 else
2778 writel(CR0_FDXRFCEN, &regs->CR0Clr);
2779
2780 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, &regs->PHYSR0))
2781 writel(CR0_FDXTFCEN, &regs->CR0Set);
2782 else
2783 writel(CR0_FDXTFCEN, &regs->CR0Clr);
2784 break;
2785
2786 case FLOW_CNTL_TX:
2787 writel(CR0_FDXTFCEN, &regs->CR0Set);
2788 writel(CR0_FDXRFCEN, &regs->CR0Clr);
2789 break;
2790
2791 case FLOW_CNTL_RX:
2792 writel(CR0_FDXRFCEN, &regs->CR0Set);
2793 writel(CR0_FDXTFCEN, &regs->CR0Clr);
2794 break;
2795
2796 case FLOW_CNTL_TX_RX:
2797 writel(CR0_FDXTFCEN, &regs->CR0Set);
2798 writel(CR0_FDXRFCEN, &regs->CR0Set);
2799 break;
2800
2801 case FLOW_CNTL_DISABLE:
2802 writel(CR0_FDXRFCEN, &regs->CR0Clr);
2803 writel(CR0_FDXTFCEN, &regs->CR0Clr);
2804 break;
2805
2806 default:
2807 break;
2808 }
2809
2810}
2811
2812
2813/**
2814 * velocity_ethtool_up - pre hook for ethtool
2815 * @dev: network device
2816 *
2817 * Called before an ethtool operation. We need to make sure the
2818 * chip is out of D3 state before we poke at it.
2819 */
6aa20a22 2820
1da177e4
LT		 2821static int velocity_ethtool_up(struct net_device *dev)
2822{
8ab6f3f7 2823 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2824 if (!netif_running(dev))
2825 pci_set_power_state(vptr->pdev, PCI_D0);
2826 return 0;
6aa20a22 2827}
1da177e4
LT		 2828
2829/**
2830 * velocity_ethtool_down - post hook for ethtool
2831 * @dev: network device
2832 *
2833 * Called after an ethtool operation. Restore the chip back to D3
2834 * state if it isn't running.
2835 */
6aa20a22 2836
1da177e4
LT		 2837static void velocity_ethtool_down(struct net_device *dev)
2838{
8ab6f3f7 2839 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2840 if (!netif_running(dev))
2841 pci_set_power_state(vptr->pdev, PCI_D3hot);
2842}
2843
2844static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2845{
8ab6f3f7 2846 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2847 struct mac_regs __iomem * regs = vptr->mac_regs;
2848 u32 status;
2849 status = check_connection_type(vptr->mac_regs);
2850
59b693fb
JC		 2851 cmd->supported = SUPPORTED_TP |
2852 SUPPORTED_Autoneg |
2853 SUPPORTED_10baseT_Half |
2854 SUPPORTED_10baseT_Full |
2855 SUPPORTED_100baseT_Half |
2856 SUPPORTED_100baseT_Full |
2857 SUPPORTED_1000baseT_Half |
2858 SUPPORTED_1000baseT_Full;
2859 if (status & VELOCITY_SPEED_1000)
2860 cmd->speed = SPEED_1000;
2861 else if (status & VELOCITY_SPEED_100)
1da177e4
LT		 2862 cmd->speed = SPEED_100;
2863 else
2864 cmd->speed = SPEED_10;
2865 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
2866 cmd->port = PORT_TP;
2867 cmd->transceiver = XCVR_INTERNAL;
2868 cmd->phy_address = readb(&regs->MIIADR) & 0x1F;
2869
2870 if (status & VELOCITY_DUPLEX_FULL)
2871 cmd->duplex = DUPLEX_FULL;
2872 else
2873 cmd->duplex = DUPLEX_HALF;
6aa20a22 2874
1da177e4
LT		 2875 return 0;
2876}
2877
2878static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
2879{
8ab6f3f7 2880 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2881 u32 curr_status;
2882 u32 new_status = 0;
2883 int ret = 0;
6aa20a22 2884
1da177e4
LT		 2885 curr_status = check_connection_type(vptr->mac_regs);
2886 curr_status &= (~VELOCITY_LINK_FAIL);
2887
2888 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
2889 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
2890 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
2891 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
2892
2893 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
2894 ret = -EINVAL;
2895 else
2896 velocity_set_media_mode(vptr, new_status);
2897
2898 return ret;
2899}
2900
2901static u32 velocity_get_link(struct net_device *dev)
2902{
8ab6f3f7 2903 struct velocity_info *vptr = netdev_priv(dev);
1da177e4 2904 struct mac_regs __iomem * regs = vptr->mac_regs;
59b693fb 2905 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, &regs->PHYSR0) ? 1 : 0;
1da177e4
LT		 2906}
2907
2908static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
2909{
8ab6f3f7 2910 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2911 strcpy(info->driver, VELOCITY_NAME);
2912 strcpy(info->version, VELOCITY_VERSION);
2913 strcpy(info->bus_info, pci_name(vptr->pdev));
2914}
2915
2916static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2917{
8ab6f3f7 2918 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2919 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
2920 wol->wolopts |= WAKE_MAGIC;
2921 /*
2922 if (vptr->wol_opts & VELOCITY_WOL_PHY)
2923 wol.wolopts|=WAKE_PHY;
2924 */
2925 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
2926 wol->wolopts |= WAKE_UCAST;
2927 if (vptr->wol_opts & VELOCITY_WOL_ARP)
2928 wol->wolopts |= WAKE_ARP;
2929 memcpy(&wol->sopass, vptr->wol_passwd, 6);
2930}
2931
2932static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2933{
8ab6f3f7 2934 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2935
2936 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
2937 return -EFAULT;
2938 vptr->wol_opts = VELOCITY_WOL_MAGIC;
2939
2940 /*
2941 if (wol.wolopts & WAKE_PHY) {
2942 vptr->wol_opts|=VELOCITY_WOL_PHY;
2943 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
2944 }
2945 */
2946
2947 if (wol->wolopts & WAKE_MAGIC) {
2948 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
2949 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2950 }
2951 if (wol->wolopts & WAKE_UCAST) {
2952 vptr->wol_opts |= VELOCITY_WOL_UCAST;
2953 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2954 }
2955 if (wol->wolopts & WAKE_ARP) {
2956 vptr->wol_opts |= VELOCITY_WOL_ARP;
2957 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
2958 }
2959 memcpy(vptr->wol_passwd, wol->sopass, 6);
2960 return 0;
2961}
2962
2963static u32 velocity_get_msglevel(struct net_device *dev)
2964{
2965 return msglevel;
2966}
2967
2968static void velocity_set_msglevel(struct net_device *dev, u32 value)
2969{
2970 msglevel = value;
2971}
2972
7282d491 2973static const struct ethtool_ops velocity_ethtool_ops = {
1da177e4
LT		 2974 .get_settings = velocity_get_settings,
2975 .set_settings = velocity_set_settings,
2976 .get_drvinfo = velocity_get_drvinfo,
2977 .get_wol = velocity_ethtool_get_wol,
2978 .set_wol = velocity_ethtool_set_wol,
2979 .get_msglevel = velocity_get_msglevel,
2980 .set_msglevel = velocity_set_msglevel,
2981 .get_link = velocity_get_link,
2982 .begin = velocity_ethtool_up,
2983 .complete = velocity_ethtool_down
2984};
2985
2986/**
2987 * velocity_mii_ioctl - MII ioctl handler
2988 * @dev: network device
2989 * @ifr: the ifreq block for the ioctl
2990 * @cmd: the command
2991 *
2992 * Process MII requests made via ioctl from the network layer. These
2993 * are used by tools like kudzu to interrogate the link state of the
2994 * hardware
2995 */
6aa20a22 2996
1da177e4
LT		 2997static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2998{
8ab6f3f7 2999 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 3000 struct mac_regs __iomem * regs = vptr->mac_regs;
3001 unsigned long flags;
3002 struct mii_ioctl_data *miidata = if_mii(ifr);
3003 int err;
6aa20a22 3004
1da177e4
LT		 3005 switch (cmd) {
3006 case SIOCGMIIPHY:
3007 miidata->phy_id = readb(&regs->MIIADR) & 0x1f;
3008 break;
3009 case SIOCGMIIREG:
3010 if (!capable(CAP_NET_ADMIN))
3011 return -EPERM;
3012 if(velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
3013 return -ETIMEDOUT;
3014 break;
3015 case SIOCSMIIREG:
3016 if (!capable(CAP_NET_ADMIN))
3017 return -EPERM;
3018 spin_lock_irqsave(&vptr->lock, flags);
3019 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
3020 spin_unlock_irqrestore(&vptr->lock, flags);
3021 check_connection_type(vptr->mac_regs);
3022 if(err)
3023 return err;
3024 break;
3025 default:
3026 return -EOPNOTSUPP;
3027 }
3028 return 0;
3029}
3030
3031#ifdef CONFIG_PM
3032
3033/**
3034 * velocity_save_context - save registers
6aa20a22 3035 * @vptr: velocity
1da177e4
LT		 3036 * @context: buffer for stored context
3037 *
3038 * Retrieve the current configuration from the velocity hardware
3039 * and stash it in the context structure, for use by the context
3040 * restore functions. This allows us to save things we need across
3041 * power down states
3042 */
6aa20a22 3043
1da177e4
LT		 3044static void velocity_save_context(struct velocity_info *vptr, struct velocity_context * context)
3045{
3046 struct mac_regs __iomem * regs = vptr->mac_regs;
3047 u16 i;
3048 u8 __iomem *ptr = (u8 __iomem *)regs;
3049
3050 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3051 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3052
3053 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3054 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3055
3056 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3057 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3058
3059}
3060
3061/**
3062 * velocity_restore_context - restore registers
6aa20a22 3063 * @vptr: velocity
1da177e4
LT		 3064 * @context: buffer for stored context
3065 *
6aa20a22 3066 * Reload the register configuration from the velocity context
1da177e4
LT		 3067 * created by velocity_save_context.
3068 */
6aa20a22 3069
1da177e4
LT		 3070static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3071{
3072 struct mac_regs __iomem * regs = vptr->mac_regs;
3073 int i;
3074 u8 __iomem *ptr = (u8 __iomem *)regs;
3075
3076 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4) {
3077 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3078 }
3079
3080 /* Just skip cr0 */
3081 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3082 /* Clear */
3083 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3084 /* Set */
3085 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3086 }
3087
3088 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4) {
3089 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3090 }
3091
3092 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) {
3093 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3094 }
3095
3096 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++) {
3097 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3098 }
3099
3100}
3101
3102/**
3103 * wol_calc_crc - WOL CRC
3104 * @pattern: data pattern
3105 * @mask_pattern: mask
3106 *
3107 * Compute the wake on lan crc hashes for the packet header
3108 * we are interested in.
3109 */
3110
3111static u16 wol_calc_crc(int size, u8 * pattern, u8 *mask_pattern)
3112{
3113 u16 crc = 0xFFFF;
3114 u8 mask;
3115 int i, j;
3116
3117 for (i = 0; i < size; i++) {
3118 mask = mask_pattern[i];
3119
3120 /* Skip this loop if the mask equals to zero */
3121 if (mask == 0x00)
3122 continue;
3123
3124 for (j = 0; j < 8; j++) {
3125 if ((mask & 0x01) == 0) {
3126 mask >>= 1;
3127 continue;
3128 }
3129 mask >>= 1;
3130 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3131 }
3132 }
3133 /* Finally, invert the result once to get the correct data */
3134 crc = ~crc;
3135 return bitreverse(crc) >> 16;
3136}
3137
3138/**
3139 * velocity_set_wol - set up for wake on lan
3140 * @vptr: velocity to set WOL status on
3141 *
3142 * Set a card up for wake on lan either by unicast or by
3143 * ARP packet.
3144 *
3145 * FIXME: check static buffer is safe here
3146 */
3147
3148static int velocity_set_wol(struct velocity_info *vptr)
3149{
3150 struct mac_regs __iomem * regs = vptr->mac_regs;
3151 static u8 buf[256];
3152 int i;
3153
3154 static u32 mask_pattern[2][4] = {
3155 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3156 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3157 };
3158
3159 writew(0xFFFF, &regs->WOLCRClr);
3160 writeb(WOLCFG_SAB | WOLCFG_SAM, &regs->WOLCFGSet);
3161 writew(WOLCR_MAGIC_EN, &regs->WOLCRSet);
3162
3163 /*
3164 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3165 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), &regs->WOLCRSet);
3166 */
3167
3168 if (vptr->wol_opts & VELOCITY_WOL_UCAST) {
3169 writew(WOLCR_UNICAST_EN, &regs->WOLCRSet);
3170 }
3171
3172 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3173 struct arp_packet *arp = (struct arp_packet *) buf;
3174 u16 crc;
3175 memset(buf, 0, sizeof(struct arp_packet) + 7);
3176
3177 for (i = 0; i < 4; i++)
3178 writel(mask_pattern[0][i], &regs->ByteMask[0][i]);
3179
3180 arp->type = htons(ETH_P_ARP);
3181 arp->ar_op = htons(1);
3182
3183 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3184
3185 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3186 (u8 *) & mask_pattern[0][0]);
3187
3188 writew(crc, &regs->PatternCRC[0]);
3189 writew(WOLCR_ARP_EN, &regs->WOLCRSet);
3190 }
3191
3192 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, &regs->PWCFGSet);
3193 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, &regs->PWCFGSet);
3194
3195 writew(0x0FFF, &regs->WOLSRClr);
3196
3197 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3198 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3199 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
3200
3201 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
3202 }
3203
3204 if (vptr->mii_status & VELOCITY_SPEED_1000)
3205 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
3206
3207 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
3208
3209 {
3210 u8 GCR;
3211 GCR = readb(&regs->CHIPGCR);
3212 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3213 writeb(GCR, &regs->CHIPGCR);
3214 }
3215
3216 BYTE_REG_BITS_OFF(ISR_PWEI, &regs->ISR);
3217 /* Turn on SWPTAG just before entering power mode */
3218 BYTE_REG_BITS_ON(STICKHW_SWPTAG, &regs->STICKHW);
3219 /* Go to bed ..... */
3220 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), &regs->STICKHW);
3221
3222 return 0;
3223}
3224
3225static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3226{
3227 struct net_device *dev = pci_get_drvdata(pdev);
3228 struct velocity_info *vptr = netdev_priv(dev);
3229 unsigned long flags;
3230
3231 if(!netif_running(vptr->dev))
3232 return 0;
3233
3234 netif_device_detach(vptr->dev);
3235
3236 spin_lock_irqsave(&vptr->lock, flags);
3237 pci_save_state(pdev);
3238#ifdef ETHTOOL_GWOL
3239 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3240 velocity_get_ip(vptr);
3241 velocity_save_context(vptr, &vptr->context);
3242 velocity_shutdown(vptr);
3243 velocity_set_wol(vptr);
3244 pci_enable_wake(pdev, 3, 1);
3245 pci_set_power_state(pdev, PCI_D3hot);
3246 } else {
3247 velocity_save_context(vptr, &vptr->context);
3248 velocity_shutdown(vptr);
3249 pci_disable_device(pdev);
3250 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3251 }
3252#else
3253 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3254#endif
3255 spin_unlock_irqrestore(&vptr->lock, flags);
3256 return 0;
3257}
3258
3259static int velocity_resume(struct pci_dev *pdev)
3260{
3261 struct net_device *dev = pci_get_drvdata(pdev);
3262 struct velocity_info *vptr = netdev_priv(dev);
3263 unsigned long flags;
3264 int i;
3265
3266 if(!netif_running(vptr->dev))
3267 return 0;
3268
3269 pci_set_power_state(pdev, PCI_D0);
3270 pci_enable_wake(pdev, 0, 0);
3271 pci_restore_state(pdev);
3272
3273 mac_wol_reset(vptr->mac_regs);
3274
3275 spin_lock_irqsave(&vptr->lock, flags);
3276 velocity_restore_context(vptr, &vptr->context);
3277 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3278 mac_disable_int(vptr->mac_regs);
3279
3280 velocity_tx_srv(vptr, 0);
3281
3282 for (i = 0; i < vptr->num_txq; i++) {
3283 if (vptr->td_used[i]) {
3284 mac_tx_queue_wake(vptr->mac_regs, i);
3285 }
3286 }
3287
3288 mac_enable_int(vptr->mac_regs);
3289 spin_unlock_irqrestore(&vptr->lock, flags);
3290 netif_device_attach(vptr->dev);
3291
3292 return 0;
3293}
3294
3295static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3296{
3297 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
3298
3299 if (ifa) {
3300 struct net_device *dev = ifa->ifa_dev->dev;
3301 struct velocity_info *vptr;
3302 unsigned long flags;
3303
3304 spin_lock_irqsave(&velocity_dev_list_lock, flags);
3305 list_for_each_entry(vptr, &velocity_dev_list, list) {
3306 if (vptr->dev == dev) {
3307 velocity_get_ip(vptr);
3308 break;
3309 }
3310 }
3311 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
3312 }
3313 return NOTIFY_DONE;
3314}
3315#endif
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