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net: use netdev stats in b44, sundance, via-rhine and via-velocity
[deliverable/linux.git] / drivers / net / via-velocity.c
CommitLineData
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
1da177e4
LT		 11 * rx_copybreak/alignment
12 * Scatter gather
13 * More testing
14 *
113aa838 15 * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk>
1da177e4
LT		 16 * Additional fixes and clean up: Francois Romieu
17 *
18 * This source has not been verified for use in safety critical systems.
19 *
20 * Please direct queries about the revamped driver to the linux-kernel
21 * list not VIA.
22 *
23 * Original code:
24 *
25 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
26 * All rights reserved.
27 *
28 * This software may be redistributed and/or modified under
29 * the terms of the GNU General Public License as published by the Free
30 * Software Foundation; either version 2 of the License, or
31 * any later version.
32 *
33 * This program is distributed in the hope that it will be useful, but
34 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
35 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
36 * for more details.
37 *
38 * Author: Chuang Liang-Shing, AJ Jiang
39 *
40 * Date: Jan 24, 2003
41 *
42 * MODULE_LICENSE("GPL");
43 *
44 */
45
46
47#include <linux/module.h>
48#include <linux/types.h>
1da177e4
LT		 49#include <linux/init.h>
50#include <linux/mm.h>
51#include <linux/errno.h>
52#include <linux/ioport.h>
53#include <linux/pci.h>
54#include <linux/kernel.h>
55#include <linux/netdevice.h>
56#include <linux/etherdevice.h>
57#include <linux/skbuff.h>
58#include <linux/delay.h>
59#include <linux/timer.h>
60#include <linux/slab.h>
61#include <linux/interrupt.h>
1da177e4
LT		 62#include <linux/string.h>
63#include <linux/wait.h>
64#include <asm/io.h>
65#include <linux/if.h>
1da177e4
LT		 66#include <asm/uaccess.h>
67#include <linux/proc_fs.h>
68#include <linux/inetdevice.h>
69#include <linux/reboot.h>
70#include <linux/ethtool.h>
71#include <linux/mii.h>
72#include <linux/in.h>
73#include <linux/if_arp.h>
501e4d24 74#include <linux/if_vlan.h>
1da177e4
LT		 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
01faccbf
SH		 87/**
88 * mac_get_cam_mask - Read a CAM mask
89 * @regs: register block for this velocity
90 * @mask: buffer to store mask
91 *
92 * Fetch the mask bits of the selected CAM and store them into the
93 * provided mask buffer.
94 */
95
96static void mac_get_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
97{
98 int i;
99
100 /* Select CAM mask */
101 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
102
103 writeb(0, &regs->CAMADDR);
104
105 /* read mask */
106 for (i = 0; i < 8; i++)
107 *mask++ = readb(&(regs->MARCAM[i]));
108
109 /* disable CAMEN */
110 writeb(0, &regs->CAMADDR);
111
112 /* Select mar */
113 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
114
115}
116
117
118/**
119 * mac_set_cam_mask - Set a CAM mask
120 * @regs: register block for this velocity
121 * @mask: CAM mask to load
122 *
123 * Store a new mask into a CAM
124 */
125
126static void mac_set_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
127{
128 int i;
129 /* Select CAM mask */
130 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
131
132 writeb(CAMADDR_CAMEN, &regs->CAMADDR);
133
134 for (i = 0; i < 8; i++) {
135 writeb(*mask++, &(regs->MARCAM[i]));
136 }
137 /* disable CAMEN */
138 writeb(0, &regs->CAMADDR);
139
140 /* Select mar */
141 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
142}
143
144static void mac_set_vlan_cam_mask(struct mac_regs __iomem * regs, u8 * mask)
145{
146 int i;
147 /* Select CAM mask */
148 BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
149
150 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, &regs->CAMADDR);
151
152 for (i = 0; i < 8; i++) {
153 writeb(*mask++, &(regs->MARCAM[i]));
154 }
155 /* disable CAMEN */
156 writeb(0, &regs->CAMADDR);
157
158 /* Select mar */
159 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
160}
161
162/**
163 * mac_set_cam - set CAM data
164 * @regs: register block of this velocity
165 * @idx: Cam index
166 * @addr: 2 or 6 bytes of CAM data
167 *
168 * Load an address or vlan tag into a CAM
169 */
170
171static void mac_set_cam(struct mac_regs __iomem * regs, int idx, const u8 *addr)
172{
173 int i;
174
175 /* Select CAM mask */
176 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
177
178 idx &= (64 - 1);
179
180 writeb(CAMADDR_CAMEN | idx, &regs->CAMADDR);
181
182 for (i = 0; i < 6; i++) {
183 writeb(*addr++, &(regs->MARCAM[i]));
184 }
185 BYTE_REG_BITS_ON(CAMCR_CAMWR, &regs->CAMCR);
186
187 udelay(10);
188
189 writeb(0, &regs->CAMADDR);
190
191 /* Select mar */
192 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
193}
194
195static void mac_set_vlan_cam(struct mac_regs __iomem * regs, int idx,
196 const u8 *addr)
197{
198
199 /* Select CAM mask */
200 BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
201
202 idx &= (64 - 1);
203
204 writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, &regs->CAMADDR);
205 writew(*((u16 *) addr), &regs->MARCAM[0]);
206
207 BYTE_REG_BITS_ON(CAMCR_CAMWR, &regs->CAMCR);
208
209 udelay(10);
210
211 writeb(0, &regs->CAMADDR);
212
213 /* Select mar */
214 BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, &regs->CAMCR);
215}
216
217
218/**
219 * mac_wol_reset - reset WOL after exiting low power
220 * @regs: register block of this velocity
221 *
222 * Called after we drop out of wake on lan mode in order to
223 * reset the Wake on lan features. This function doesn't restore
224 * the rest of the logic from the result of sleep/wakeup
225 */
226
227static void mac_wol_reset(struct mac_regs __iomem * regs)
228{
229
230 /* Turn off SWPTAG right after leaving power mode */
231 BYTE_REG_BITS_OFF(STICKHW_SWPTAG, &regs->STICKHW);
232 /* clear sticky bits */
233 BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), &regs->STICKHW);
234
235 BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, &regs->CHIPGCR);
236 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, &regs->CHIPGCR);
237 /* disable force PME-enable */
238 writeb(WOLCFG_PMEOVR, &regs->WOLCFGClr);
239 /* disable power-event config bit */
240 writew(0xFFFF, &regs->WOLCRClr);
241 /* clear power status */
242 writew(0xFFFF, &regs->WOLSRClr);
243}
1da177e4
LT		 244
245static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
7282d491 246static const struct ethtool_ops velocity_ethtool_ops;
1da177e4
LT		 247
248/*
249 Define module options
250*/
251
252MODULE_AUTHOR("VIA Networking Technologies, Inc.");
253MODULE_LICENSE("GPL");
254MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver");
255
256#define VELOCITY_PARAM(N,D) \
257 static int N[MAX_UNITS]=OPTION_DEFAULT;\
258 module_param_array(N, int, NULL, 0); \
259 MODULE_PARM_DESC(N, D);
260
261#define RX_DESC_MIN 64
262#define RX_DESC_MAX 255
263#define RX_DESC_DEF 64
264VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors");
265
266#define TX_DESC_MIN 16
267#define TX_DESC_MAX 256
268#define TX_DESC_DEF 64
269VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors");
270
1da177e4
LT		 271#define RX_THRESH_MIN 0
272#define RX_THRESH_MAX 3
273#define RX_THRESH_DEF 0
274/* rx_thresh[] is used for controlling the receive fifo threshold.
275 0: indicate the rxfifo threshold is 128 bytes.
276 1: indicate the rxfifo threshold is 512 bytes.
277 2: indicate the rxfifo threshold is 1024 bytes.
278 3: indicate the rxfifo threshold is store & forward.
279*/
280VELOCITY_PARAM(rx_thresh, "Receive fifo threshold");
281
282#define DMA_LENGTH_MIN 0
283#define DMA_LENGTH_MAX 7
284#define DMA_LENGTH_DEF 0
285
286/* DMA_length[] is used for controlling the DMA length
287 0: 8 DWORDs
288 1: 16 DWORDs
289 2: 32 DWORDs
290 3: 64 DWORDs
291 4: 128 DWORDs
292 5: 256 DWORDs
293 6: SF(flush till emply)
294 7: SF(flush till emply)
295*/
296VELOCITY_PARAM(DMA_length, "DMA length");
297
1da177e4
LT		 298#define IP_ALIG_DEF 0
299/* IP_byte_align[] is used for IP header DWORD byte aligned
300 0: indicate the IP header won't be DWORD byte aligned.(Default) .
301 1: indicate the IP header will be DWORD byte aligned.
302 In some enviroment, the IP header should be DWORD byte aligned,
303 or the packet will be droped when we receive it. (eg: IPVS)
304*/
305VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned");
306
307#define TX_CSUM_DEF 1
308/* txcsum_offload[] is used for setting the checksum offload ability of NIC.
309 (We only support RX checksum offload now)
310 0: disable csum_offload[checksum offload
311 1: enable checksum offload. (Default)
312*/
313VELOCITY_PARAM(txcsum_offload, "Enable transmit packet checksum offload");
314
315#define FLOW_CNTL_DEF 1
316#define FLOW_CNTL_MIN 1
317#define FLOW_CNTL_MAX 5
318
319/* flow_control[] is used for setting the flow control ability of NIC.
320 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR.
321 2: enable TX flow control.
322 3: enable RX flow control.
323 4: enable RX/TX flow control.
324 5: disable
325*/
326VELOCITY_PARAM(flow_control, "Enable flow control ability");
327
328#define MED_LNK_DEF 0
329#define MED_LNK_MIN 0
330#define MED_LNK_MAX 4
331/* speed_duplex[] is used for setting the speed and duplex mode of NIC.
332 0: indicate autonegotiation for both speed and duplex mode
333 1: indicate 100Mbps half duplex mode
334 2: indicate 100Mbps full duplex mode
335 3: indicate 10Mbps half duplex mode
336 4: indicate 10Mbps full duplex mode
337
338 Note:
339 if EEPROM have been set to the force mode, this option is ignored
340 by driver.
341*/
342VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode");
343
344#define VAL_PKT_LEN_DEF 0
345/* ValPktLen[] is used for setting the checksum offload ability of NIC.
346 0: Receive frame with invalid layer 2 length (Default)
347 1: Drop frame with invalid layer 2 length
348*/
349VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame");
350
351#define WOL_OPT_DEF 0
352#define WOL_OPT_MIN 0
353#define WOL_OPT_MAX 7
354/* wol_opts[] is used for controlling wake on lan behavior.
355 0: Wake up if recevied a magic packet. (Default)
356 1: Wake up if link status is on/off.
357 2: Wake up if recevied an arp packet.
358 4: Wake up if recevied any unicast packet.
359 Those value can be sumed up to support more than one option.
360*/
361VELOCITY_PARAM(wol_opts, "Wake On Lan options");
362
363#define INT_WORKS_DEF 20
364#define INT_WORKS_MIN 10
365#define INT_WORKS_MAX 64
366
367VELOCITY_PARAM(int_works, "Number of packets per interrupt services");
368
369static int rx_copybreak = 200;
370module_param(rx_copybreak, int, 0644);
371MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
372
cabb7667
JG		 373static void velocity_init_info(struct pci_dev *pdev, struct velocity_info *vptr,
374 const struct velocity_info_tbl *info);
1da177e4
LT		 375static int velocity_get_pci_info(struct velocity_info *, struct pci_dev *pdev);
376static void velocity_print_info(struct velocity_info *vptr);
377static int velocity_open(struct net_device *dev);
378static int velocity_change_mtu(struct net_device *dev, int mtu);
379static int velocity_xmit(struct sk_buff *skb, struct net_device *dev);
3ca17dfb 380static irqreturn_t velocity_intr(int irq, void *dev_instance);
1da177e4
LT		 381static void velocity_set_multi(struct net_device *dev);
382static struct net_device_stats *velocity_get_stats(struct net_device *dev);
383static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
384static int velocity_close(struct net_device *dev);
385static int velocity_receive_frame(struct velocity_info *, int idx);
386static int velocity_alloc_rx_buf(struct velocity_info *, int idx);
387static void velocity_free_rd_ring(struct velocity_info *vptr);
388static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *);
389static int velocity_soft_reset(struct velocity_info *vptr);
390static void mii_init(struct velocity_info *vptr, u32 mii_status);
8a22dddb 391static u32 velocity_get_link(struct net_device *dev);
1da177e4
LT		 392static u32 velocity_get_opt_media_mode(struct velocity_info *vptr);
393static void velocity_print_link_status(struct velocity_info *vptr);
394static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs);
395static void velocity_shutdown(struct velocity_info *vptr);
396static void enable_flow_control_ability(struct velocity_info *vptr);
397static void enable_mii_autopoll(struct mac_regs __iomem * regs);
398static int velocity_mii_read(struct mac_regs __iomem *, u8 byIdx, u16 * pdata);
399static int velocity_mii_write(struct mac_regs __iomem *, u8 byMiiAddr, u16 data);
400static u32 mii_check_media_mode(struct mac_regs __iomem * regs);
401static u32 check_connection_type(struct mac_regs __iomem * regs);
402static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status);
403
404#ifdef CONFIG_PM
405
406static int velocity_suspend(struct pci_dev *pdev, pm_message_t state);
407static int velocity_resume(struct pci_dev *pdev);
408
ce9f7fe3
RD		 409static DEFINE_SPINLOCK(velocity_dev_list_lock);
410static LIST_HEAD(velocity_dev_list);
411
412#endif
413
414#if defined(CONFIG_PM) && defined(CONFIG_INET)
415
1da177e4
LT		 416static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr);
417
418static struct notifier_block velocity_inetaddr_notifier = {
419 .notifier_call = velocity_netdev_event,
420};
421
1da177e4
LT		 422static void velocity_register_notifier(void)
423{
424 register_inetaddr_notifier(&velocity_inetaddr_notifier);
425}
426
427static void velocity_unregister_notifier(void)
428{
429 unregister_inetaddr_notifier(&velocity_inetaddr_notifier);
430}
431
ce9f7fe3 432#else
1da177e4
LT		 433
434#define velocity_register_notifier() do {} while (0)
435#define velocity_unregister_notifier() do {} while (0)
436
ce9f7fe3 437#endif
1da177e4
LT		 438
439/*
440 * Internal board variants. At the moment we have only one
441 */
442
4f14b92f 443static struct velocity_info_tbl chip_info_table[] = {
cabb7667
JG		 444 {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL},
445 { }
1da177e4
LT		 446};
447
448/*
449 * Describe the PCI device identifiers that we support in this
450 * device driver. Used for hotplug autoloading.
451 */
452
e54f4893
JG		 453static const struct pci_device_id velocity_id_table[] __devinitdata = {
454 { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) },
455 { }
1da177e4
LT		 456};
457
458MODULE_DEVICE_TABLE(pci, velocity_id_table);
459
460/**
461 * get_chip_name - identifier to name
462 * @id: chip identifier
463 *
464 * Given a chip identifier return a suitable description. Returns
465 * a pointer a static string valid while the driver is loaded.
466 */
467
01faccbf 468static const char __devinit *get_chip_name(enum chip_type chip_id)
1da177e4
LT		 469{
470 int i;
471 for (i = 0; chip_info_table[i].name != NULL; i++)
472 if (chip_info_table[i].chip_id == chip_id)
473 break;
474 return chip_info_table[i].name;
475}
476
477/**
478 * velocity_remove1 - device unplug
479 * @pdev: PCI device being removed
480 *
481 * Device unload callback. Called on an unplug or on module
482 * unload for each active device that is present. Disconnects
483 * the device from the network layer and frees all the resources
484 */
485
486static void __devexit velocity_remove1(struct pci_dev *pdev)
487{
488 struct net_device *dev = pci_get_drvdata(pdev);
8ab6f3f7 489 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 490
491#ifdef CONFIG_PM
492 unsigned long flags;
493
494 spin_lock_irqsave(&velocity_dev_list_lock, flags);
495 if (!list_empty(&velocity_dev_list))
496 list_del(&vptr->list);
497 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
498#endif
499 unregister_netdev(dev);
500 iounmap(vptr->mac_regs);
501 pci_release_regions(pdev);
502 pci_disable_device(pdev);
503 pci_set_drvdata(pdev, NULL);
504 free_netdev(dev);
505
506 velocity_nics--;
507}
508
509/**
510 * velocity_set_int_opt - parser for integer options
511 * @opt: pointer to option value
512 * @val: value the user requested (or -1 for default)
513 * @min: lowest value allowed
514 * @max: highest value allowed
515 * @def: default value
516 * @name: property name
517 * @dev: device name
518 *
519 * Set an integer property in the module options. This function does
520 * all the verification and checking as well as reporting so that
521 * we don't duplicate code for each option.
522 */
523
07b5f6a6 524static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname)
1da177e4
LT		 525{
526 if (val == -1)
527 *opt = def;
528 else if (val < min || val > max) {
529 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n",
530 devname, name, min, max);
531 *opt = def;
532 } else {
533 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n",
534 devname, name, val);
535 *opt = val;
536 }
537}
538
539/**
540 * velocity_set_bool_opt - parser for boolean options
541 * @opt: pointer to option value
542 * @val: value the user requested (or -1 for default)
543 * @def: default value (yes/no)
544 * @flag: numeric value to set for true.
545 * @name: property name
546 * @dev: device name
547 *
548 * Set a boolean property in the module options. This function does
549 * all the verification and checking as well as reporting so that
550 * we don't duplicate code for each option.
551 */
552
07b5f6a6 553static void __devinit velocity_set_bool_opt(u32 * opt, int val, int def, u32 flag, char *name, const char *devname)
1da177e4
LT		 554{
555 (*opt) &= (~flag);
556 if (val == -1)
557 *opt |= (def ? flag : 0);
558 else if (val < 0 || val > 1) {
6aa20a22 559 printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n",
1da177e4
LT		 560 devname, name);
561 *opt |= (def ? flag : 0);
562 } else {
6aa20a22 563 printk(KERN_INFO "%s: set parameter %s to %s\n",
1da177e4
LT		 564 devname, name, val ? "TRUE" : "FALSE");
565 *opt |= (val ? flag : 0);
566 }
567}
568
569/**
570 * velocity_get_options - set options on device
571 * @opts: option structure for the device
572 * @index: index of option to use in module options array
573 * @devname: device name
574 *
575 * Turn the module and command options into a single structure
576 * for the current device
577 */
578
07b5f6a6 579static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname)
1da177e4
LT		 580{
581
582 velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname);
583 velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname);
584 velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname);
585 velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname);
501e4d24 586
1da177e4
LT		 587 velocity_set_bool_opt(&opts->flags, txcsum_offload[index], TX_CSUM_DEF, VELOCITY_FLAGS_TX_CSUM, "txcsum_offload", devname);
588 velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname);
589 velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname);
590 velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname);
591 velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname);
592 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);
593 velocity_set_int_opt((int *) &opts->int_works, int_works[index], INT_WORKS_MIN, INT_WORKS_MAX, INT_WORKS_DEF, "Interrupt service works", devname);
594 opts->numrx = (opts->numrx & ~3);
595}
596
597/**
598 * velocity_init_cam_filter - initialise CAM
599 * @vptr: velocity to program
600 *
601 * Initialize the content addressable memory used for filters. Load
602 * appropriately according to the presence of VLAN
603 */
604
605static void velocity_init_cam_filter(struct velocity_info *vptr)
606{
607 struct mac_regs __iomem * regs = vptr->mac_regs;
608
609 /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */
610 WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, &regs->MCFG);
611 WORD_REG_BITS_ON(MCFG_VIDFR, &regs->MCFG);
612
613 /* Disable all CAMs */
614 memset(vptr->vCAMmask, 0, sizeof(u8) * 8);
615 memset(vptr->mCAMmask, 0, sizeof(u8) * 8);
01faccbf
SH		 616 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
617 mac_set_cam_mask(regs, vptr->mCAMmask);
1da177e4 618
d4f73c8e 619 /* Enable VCAMs */
501e4d24 620 if (vptr->vlgrp) {
d4f73c8e
FR		 621 unsigned int vid, i = 0;
622
623 if (!vlan_group_get_device(vptr->vlgrp, 0))
624 WORD_REG_BITS_ON(MCFG_RTGOPT, &regs->MCFG);
501e4d24 625
d4f73c8e
FR		 626 for (vid = 1; (vid < VLAN_VID_MASK); vid++) {
627 if (vlan_group_get_device(vptr->vlgrp, vid)) {
628 mac_set_vlan_cam(regs, i, (u8 *) &vid);
629 vptr->vCAMmask[i / 8] |= 0x1 << (i % 8);
630 if (++i >= VCAM_SIZE)
631 break;
501e4d24
SH		 632 }
633 }
01faccbf 634 mac_set_vlan_cam_mask(regs, vptr->vCAMmask);
1da177e4
LT		 635 }
636}
637
d4f73c8e
FR		 638static void velocity_vlan_rx_register(struct net_device *dev,
639 struct vlan_group *grp)
640{
641 struct velocity_info *vptr = netdev_priv(dev);
642
643 vptr->vlgrp = grp;
644}
645
501e4d24
SH		 646static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
647{
648 struct velocity_info *vptr = netdev_priv(dev);
649
650 spin_lock_irq(&vptr->lock);
651 velocity_init_cam_filter(vptr);
652 spin_unlock_irq(&vptr->lock);
653}
654
655static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
656{
657 struct velocity_info *vptr = netdev_priv(dev);
658
659 spin_lock_irq(&vptr->lock);
660 vlan_group_set_device(vptr->vlgrp, vid, NULL);
661 velocity_init_cam_filter(vptr);
662 spin_unlock_irq(&vptr->lock);
663}
664
3c4dc711
FR		 665static void velocity_init_rx_ring_indexes(struct velocity_info *vptr)
666{
667 vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0;
668}
501e4d24 669
1da177e4
LT		 670/**
671 * velocity_rx_reset - handle a receive reset
672 * @vptr: velocity we are resetting
673 *
674 * Reset the ownership and status for the receive ring side.
675 * Hand all the receive queue to the NIC.
676 */
677
678static void velocity_rx_reset(struct velocity_info *vptr)
679{
680
681 struct mac_regs __iomem * regs = vptr->mac_regs;
682 int i;
683
3c4dc711 684 velocity_init_rx_ring_indexes(vptr);
1da177e4
LT		 685
686 /*
687 * Init state, all RD entries belong to the NIC
688 */
689 for (i = 0; i < vptr->options.numrx; ++i)
0fe9f15e 690 vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC;
1da177e4
LT		 691
692 writew(vptr->options.numrx, &regs->RBRDU);
0fe9f15e 693 writel(vptr->rx.pool_dma, &regs->RDBaseLo);
1da177e4
LT		 694 writew(0, &regs->RDIdx);
695 writew(vptr->options.numrx - 1, &regs->RDCSize);
696}
697
698/**
699 * velocity_init_registers - initialise MAC registers
700 * @vptr: velocity to init
701 * @type: type of initialisation (hot or cold)
702 *
703 * Initialise the MAC on a reset or on first set up on the
704 * hardware.
705 */
706
6aa20a22 707static void velocity_init_registers(struct velocity_info *vptr,
1da177e4
LT		 708 enum velocity_init_type type)
709{
710 struct mac_regs __iomem * regs = vptr->mac_regs;
711 int i, mii_status;
712
713 mac_wol_reset(regs);
714
715 switch (type) {
716 case VELOCITY_INIT_RESET:
717 case VELOCITY_INIT_WOL:
718
719 netif_stop_queue(vptr->dev);
720
721 /*
722 * Reset RX to prevent RX pointer not on the 4X location
723 */
724 velocity_rx_reset(vptr);
725 mac_rx_queue_run(regs);
726 mac_rx_queue_wake(regs);
727
728 mii_status = velocity_get_opt_media_mode(vptr);
729 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
730 velocity_print_link_status(vptr);
731 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
732 netif_wake_queue(vptr->dev);
733 }
734
735 enable_flow_control_ability(vptr);
736
737 mac_clear_isr(regs);
738 writel(CR0_STOP, &regs->CR0Clr);
6aa20a22 739 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT),
1da177e4
LT		 740 &regs->CR0Set);
741
742 break;
743
744 case VELOCITY_INIT_COLD:
745 default:
746 /*
747 * Do reset
748 */
749 velocity_soft_reset(vptr);
750 mdelay(5);
751
752 mac_eeprom_reload(regs);
753 for (i = 0; i < 6; i++) {
754 writeb(vptr->dev->dev_addr[i], &(regs->PAR[i]));
755 }
756 /*
757 * clear Pre_ACPI bit.
758 */
759 BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA));
760 mac_set_rx_thresh(regs, vptr->options.rx_thresh);
761 mac_set_dma_length(regs, vptr->options.DMA_length);
762
763 writeb(WOLCFG_SAM | WOLCFG_SAB, &regs->WOLCFGSet);
764 /*
765 * Back off algorithm use original IEEE standard
766 */
767 BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), &regs->CFGB);
768
769 /*
770 * Init CAM filter
771 */
772 velocity_init_cam_filter(vptr);
773
774 /*
775 * Set packet filter: Receive directed and broadcast address
776 */
777 velocity_set_multi(vptr->dev);
778
779 /*
780 * Enable MII auto-polling
781 */
782 enable_mii_autopoll(regs);
783
784 vptr->int_mask = INT_MASK_DEF;
785
0fe9f15e 786 writel(vptr->rx.pool_dma, &regs->RDBaseLo);
1da177e4
LT		 787 writew(vptr->options.numrx - 1, &regs->RDCSize);
788 mac_rx_queue_run(regs);
789 mac_rx_queue_wake(regs);
790
791 writew(vptr->options.numtx - 1, &regs->TDCSize);
792
0fe9f15e
FR		 793 for (i = 0; i < vptr->tx.numq; i++) {
794 writel(vptr->tx.pool_dma[i], &regs->TDBaseLo[i]);
1da177e4
LT		 795 mac_tx_queue_run(regs, i);
796 }
797
798 init_flow_control_register(vptr);
799
800 writel(CR0_STOP, &regs->CR0Clr);
801 writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), &regs->CR0Set);
802
803 mii_status = velocity_get_opt_media_mode(vptr);
804 netif_stop_queue(vptr->dev);
805
806 mii_init(vptr, mii_status);
807
808 if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) {
809 velocity_print_link_status(vptr);
810 if (!(vptr->mii_status & VELOCITY_LINK_FAIL))
811 netif_wake_queue(vptr->dev);
812 }
813
814 enable_flow_control_ability(vptr);
815 mac_hw_mibs_init(regs);
816 mac_write_int_mask(vptr->int_mask, regs);
817 mac_clear_isr(regs);
818
819 }
820}
821
822/**
823 * velocity_soft_reset - soft reset
824 * @vptr: velocity to reset
825 *
826 * Kick off a soft reset of the velocity adapter and then poll
827 * until the reset sequence has completed before returning.
828 */
829
830static int velocity_soft_reset(struct velocity_info *vptr)
831{
832 struct mac_regs __iomem * regs = vptr->mac_regs;
833 int i = 0;
834
835 writel(CR0_SFRST, &regs->CR0Set);
836
837 for (i = 0; i < W_MAX_TIMEOUT; i++) {
838 udelay(5);
839 if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, &regs->CR0Set))
840 break;
841 }
842
843 if (i == W_MAX_TIMEOUT) {
844 writel(CR0_FORSRST, &regs->CR0Set);
845 /* FIXME: PCI POSTING */
846 /* delay 2ms */
847 mdelay(2);
848 }
849 return 0;
850}
851
39a11bd9
SH		 852static const struct net_device_ops velocity_netdev_ops = {
853 .ndo_open = velocity_open,
854 .ndo_stop = velocity_close,
00829823 855 .ndo_start_xmit = velocity_xmit,
39a11bd9
SH		 856 .ndo_get_stats = velocity_get_stats,
857 .ndo_validate_addr = eth_validate_addr,
fe96aaa1 858 .ndo_set_mac_address = eth_mac_addr,
39a11bd9
SH		 859 .ndo_set_multicast_list = velocity_set_multi,
860 .ndo_change_mtu = velocity_change_mtu,
861 .ndo_do_ioctl = velocity_ioctl,
862 .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid,
863 .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid,
864 .ndo_vlan_rx_register = velocity_vlan_rx_register,
865};
866
1da177e4
LT		 867/**
868 * velocity_found1 - set up discovered velocity card
869 * @pdev: PCI device
870 * @ent: PCI device table entry that matched
871 *
872 * Configure a discovered adapter from scratch. Return a negative
873 * errno error code on failure paths.
874 */
875
876static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent)
877{
878 static int first = 1;
879 struct net_device *dev;
880 int i;
07b5f6a6 881 const char *drv_string;
cabb7667 882 const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data];
1da177e4
LT		 883 struct velocity_info *vptr;
884 struct mac_regs __iomem * regs;
885 int ret = -ENOMEM;
886
e54f4893
JG		 887 /* FIXME: this driver, like almost all other ethernet drivers,
888 * can support more than MAX_UNITS.
889 */
1da177e4 890 if (velocity_nics >= MAX_UNITS) {
6aa20a22 891 dev_notice(&pdev->dev, "already found %d NICs.\n",
e54f4893 892 velocity_nics);
1da177e4
LT		 893 return -ENODEV;
894 }
895
896 dev = alloc_etherdev(sizeof(struct velocity_info));
e54f4893 897 if (!dev) {
9b91cf9d 898 dev_err(&pdev->dev, "allocate net device failed.\n");
1da177e4
LT		 899 goto out;
900 }
6aa20a22 901
1da177e4 902 /* Chain it all together */
6aa20a22 903
1da177e4 904 SET_NETDEV_DEV(dev, &pdev->dev);
8ab6f3f7 905 vptr = netdev_priv(dev);
1da177e4
LT		 906
907
908 if (first) {
6aa20a22 909 printk(KERN_INFO "%s Ver. %s\n",
1da177e4
LT		 910 VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION);
911 printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n");
912 printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n");
913 first = 0;
914 }
915
916 velocity_init_info(pdev, vptr, info);
917
918 vptr->dev = dev;
919
920 dev->irq = pdev->irq;
921
922 ret = pci_enable_device(pdev);
6aa20a22 923 if (ret < 0)
1da177e4
LT		 924 goto err_free_dev;
925
926 ret = velocity_get_pci_info(vptr, pdev);
927 if (ret < 0) {
e54f4893 928 /* error message already printed */
1da177e4
LT		 929 goto err_disable;
930 }
931
932 ret = pci_request_regions(pdev, VELOCITY_NAME);
933 if (ret < 0) {
9b91cf9d 934 dev_err(&pdev->dev, "No PCI resources.\n");
1da177e4
LT		 935 goto err_disable;
936 }
937
cabb7667 938 regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE);
1da177e4
LT		 939 if (regs == NULL) {
940 ret = -EIO;
941 goto err_release_res;
942 }
943
944 vptr->mac_regs = regs;
945
946 mac_wol_reset(regs);
947
948 dev->base_addr = vptr->ioaddr;
949
950 for (i = 0; i < 6; i++)
951 dev->dev_addr[i] = readb(&regs->PAR[i]);
952
953
07b5f6a6
SH		 954 drv_string = dev_driver_string(&pdev->dev);
955
956 velocity_get_options(&vptr->options, velocity_nics, drv_string);
1da177e4 957
6aa20a22 958 /*
1da177e4
LT		 959 * Mask out the options cannot be set to the chip
960 */
6aa20a22 961
1da177e4
LT		 962 vptr->options.flags &= info->flags;
963
964 /*
965 * Enable the chip specified capbilities
966 */
6aa20a22 967
1da177e4
LT		 968 vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL);
969
970 vptr->wol_opts = vptr->options.wol_opts;
971 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
972
973 vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs);
974
975 dev->irq = pdev->irq;
39a11bd9 976 dev->netdev_ops = &velocity_netdev_ops;
1da177e4 977 dev->ethtool_ops = &velocity_ethtool_ops;
501e4d24 978
1da177e4
LT		 979#ifdef VELOCITY_ZERO_COPY_SUPPORT
980 dev->features |= NETIF_F_SG;
981#endif
d4f73c8e
FR		 982 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
983 NETIF_F_HW_VLAN_RX;
1da177e4 984
501e4d24 985 if (vptr->flags & VELOCITY_FLAGS_TX_CSUM)
9f3f46b5 986 dev->features |= NETIF_F_IP_CSUM;
1da177e4
LT		 987
988 ret = register_netdev(dev);
989 if (ret < 0)
990 goto err_iounmap;
991
8a22dddb
FR		 992 if (velocity_get_link(dev))
993 netif_carrier_off(dev);
994
1da177e4
LT		 995 velocity_print_info(vptr);
996 pci_set_drvdata(pdev, dev);
6aa20a22 997
1da177e4 998 /* and leave the chip powered down */
6aa20a22 999
1da177e4
LT		 1000 pci_set_power_state(pdev, PCI_D3hot);
1001#ifdef CONFIG_PM
1002 {
1003 unsigned long flags;
1004
1005 spin_lock_irqsave(&velocity_dev_list_lock, flags);
1006 list_add(&vptr->list, &velocity_dev_list);
1007 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
1008 }
1009#endif
1010 velocity_nics++;
1011out:
1012 return ret;
1013
1014err_iounmap:
1015 iounmap(regs);
1016err_release_res:
1017 pci_release_regions(pdev);
1018err_disable:
1019 pci_disable_device(pdev);
1020err_free_dev:
1021 free_netdev(dev);
1022 goto out;
1023}
1024
1025/**
1026 * velocity_print_info - per driver data
1027 * @vptr: velocity
1028 *
1029 * Print per driver data as the kernel driver finds Velocity
1030 * hardware
1031 */
1032
1033static void __devinit velocity_print_info(struct velocity_info *vptr)
1034{
1035 struct net_device *dev = vptr->dev;
1036
1037 printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id));
6aa20a22
JG		 1038 printk(KERN_INFO "%s: Ethernet Address: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
1039 dev->name,
1040 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
1da177e4
LT		 1041 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
1042}
1043
1044/**
1045 * velocity_init_info - init private data
1046 * @pdev: PCI device
1047 * @vptr: Velocity info
1048 * @info: Board type
1049 *
1050 * Set up the initial velocity_info struct for the device that has been
1051 * discovered.
1052 */
1053
cabb7667
JG		 1054static void __devinit velocity_init_info(struct pci_dev *pdev,
1055 struct velocity_info *vptr,
1056 const struct velocity_info_tbl *info)
1da177e4
LT		 1057{
1058 memset(vptr, 0, sizeof(struct velocity_info));
1059
1060 vptr->pdev = pdev;
1061 vptr->chip_id = info->chip_id;
0fe9f15e 1062 vptr->tx.numq = info->txqueue;
1da177e4
LT		 1063 vptr->multicast_limit = MCAM_SIZE;
1064 spin_lock_init(&vptr->lock);
1065 INIT_LIST_HEAD(&vptr->list);
1066}
1067
1068/**
1069 * velocity_get_pci_info - retrieve PCI info for device
1070 * @vptr: velocity device
1071 * @pdev: PCI device it matches
1072 *
1073 * Retrieve the PCI configuration space data that interests us from
1074 * the kernel PCI layer
1075 */
1076
1077static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
1078{
44c10138 1079 vptr->rev_id = pdev->revision;
6aa20a22 1080
1da177e4
LT		 1081 pci_set_master(pdev);
1082
1083 vptr->ioaddr = pci_resource_start(pdev, 0);
1084 vptr->memaddr = pci_resource_start(pdev, 1);
6aa20a22 1085
e54f4893 1086 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) {
9b91cf9d 1087 dev_err(&pdev->dev,
e54f4893 1088 "region #0 is not an I/O resource, aborting.\n");
1da177e4
LT		 1089 return -EINVAL;
1090 }
1091
e54f4893 1092 if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) {
9b91cf9d 1093 dev_err(&pdev->dev,
e54f4893 1094 "region #1 is an I/O resource, aborting.\n");
1da177e4
LT		 1095 return -EINVAL;
1096 }
1097
cabb7667 1098 if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) {
9b91cf9d 1099 dev_err(&pdev->dev, "region #1 is too small.\n");
1da177e4
LT		 1100 return -EINVAL;
1101 }
1102 vptr->pdev = pdev;
1103
1104 return 0;
1105}
1106
1107/**
3c4dc711 1108 * velocity_init_dma_rings - set up DMA rings
1da177e4
LT		 1109 * @vptr: Velocity to set up
1110 *
1111 * Allocate PCI mapped DMA rings for the receive and transmit layer
1112 * to use.
1113 */
1114
3c4dc711 1115static int velocity_init_dma_rings(struct velocity_info *vptr)
1da177e4 1116{
8ac53afc
FR		 1117 struct velocity_opt *opt = &vptr->options;
1118 const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
1119 const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
1120 struct pci_dev *pdev = vptr->pdev;
1da177e4 1121 dma_addr_t pool_dma;
8ac53afc
FR		 1122 void *pool;
1123 unsigned int i;
1da177e4
LT		 1124
1125 /*
8ac53afc
FR		 1126 * Allocate all RD/TD rings a single pool.
1127 *
1da177e4
LT		 1128 * pci_alloc_consistent() fulfills the requirement for 64 bytes
1129 * alignment
1130 */
0fe9f15e 1131 pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq +
8ac53afc
FR		 1132 rx_ring_size, &pool_dma);
1133 if (!pool) {
1134 dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
1135 vptr->dev->name);
1da177e4
LT		 1136 return -ENOMEM;
1137 }
1138
0fe9f15e
FR		 1139 vptr->rx.ring = pool;
1140 vptr->rx.pool_dma = pool_dma;
1da177e4 1141
8ac53afc
FR		 1142 pool += rx_ring_size;
1143 pool_dma += rx_ring_size;
1da177e4 1144
0fe9f15e
FR		 1145 for (i = 0; i < vptr->tx.numq; i++) {
1146 vptr->tx.rings[i] = pool;
1147 vptr->tx.pool_dma[i] = pool_dma;
8ac53afc
FR		 1148 pool += tx_ring_size;
1149 pool_dma += tx_ring_size;
1da177e4 1150 }
8ac53afc 1151
1da177e4
LT		 1152 return 0;
1153}
1154
1155/**
3c4dc711 1156 * velocity_free_dma_rings - free PCI ring pointers
1da177e4
LT		 1157 * @vptr: Velocity to free from
1158 *
1159 * Clean up the PCI ring buffers allocated to this velocity.
1160 */
1161
3c4dc711 1162static void velocity_free_dma_rings(struct velocity_info *vptr)
1da177e4 1163{
580a6902 1164 const int size = vptr->options.numrx * sizeof(struct rx_desc) +
0fe9f15e 1165 vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq;
1da177e4 1166
0fe9f15e 1167 pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma);
1da177e4
LT		 1168}
1169
28133176 1170static void velocity_give_many_rx_descs(struct velocity_info *vptr)
1da177e4
LT		 1171{
1172 struct mac_regs __iomem *regs = vptr->mac_regs;
1173 int avail, dirty, unusable;
1174
1175 /*
1176 * RD number must be equal to 4X per hardware spec
1177 * (programming guide rev 1.20, p.13)
1178 */
0fe9f15e 1179 if (vptr->rx.filled < 4)
1da177e4
LT		 1180 return;
1181
1182 wmb();
1183
0fe9f15e
FR		 1184 unusable = vptr->rx.filled & 0x0003;
1185 dirty = vptr->rx.dirty - unusable;
1186 for (avail = vptr->rx.filled & 0xfffc; avail; avail--) {
1da177e4 1187 dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1;
0fe9f15e 1188 vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC;
1da177e4
LT		 1189 }
1190
0fe9f15e
FR		 1191 writew(vptr->rx.filled & 0xfffc, &regs->RBRDU);
1192 vptr->rx.filled = unusable;
1da177e4
LT		 1193}
1194
1195static int velocity_rx_refill(struct velocity_info *vptr)
1196{
0fe9f15e 1197 int dirty = vptr->rx.dirty, done = 0;
1da177e4
LT		 1198
1199 do {
0fe9f15e 1200 struct rx_desc *rd = vptr->rx.ring + dirty;
1da177e4
LT		 1201
1202 /* Fine for an all zero Rx desc at init time as well */
4a51c0d0 1203 if (rd->rdesc0.len & OWNED_BY_NIC)
1da177e4
LT		 1204 break;
1205
0fe9f15e 1206 if (!vptr->rx.info[dirty].skb) {
28133176 1207 if (velocity_alloc_rx_buf(vptr, dirty) < 0)
1da177e4
LT		 1208 break;
1209 }
1210 done++;
6aa20a22 1211 dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0;
0fe9f15e 1212 } while (dirty != vptr->rx.curr);
1da177e4
LT		 1213
1214 if (done) {
0fe9f15e
FR		 1215 vptr->rx.dirty = dirty;
1216 vptr->rx.filled += done;
1da177e4
LT		 1217 }
1218
28133176 1219 return done;
1da177e4
LT		 1220}
1221
9088d9a4
FR		 1222static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu)
1223{
0fe9f15e 1224 vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32;
9088d9a4
FR		 1225}
1226
1da177e4
LT		 1227/**
1228 * velocity_init_rd_ring - set up receive ring
1229 * @vptr: velocity to configure
1230 *
1231 * Allocate and set up the receive buffers for each ring slot and
1232 * assign them to the network adapter.
1233 */
1234
1235static int velocity_init_rd_ring(struct velocity_info *vptr)
1236{
28133176 1237 int ret = -ENOMEM;
48f6b053 1238
0fe9f15e 1239 vptr->rx.info = kcalloc(vptr->options.numrx,
ae94607d 1240 sizeof(struct velocity_rd_info), GFP_KERNEL);
0fe9f15e 1241 if (!vptr->rx.info)
28133176 1242 goto out;
1da177e4 1243
3c4dc711 1244 velocity_init_rx_ring_indexes(vptr);
1da177e4 1245
28133176 1246 if (velocity_rx_refill(vptr) != vptr->options.numrx) {
1da177e4
LT		 1247 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR
1248 "%s: failed to allocate RX buffer.\n", vptr->dev->name);
1249 velocity_free_rd_ring(vptr);
28133176 1250 goto out;
1da177e4 1251 }
ae94607d 1252
28133176
FR		 1253 ret = 0;
1254out:
1da177e4
LT		 1255 return ret;
1256}
1257
1258/**
1259 * velocity_free_rd_ring - free receive ring
1260 * @vptr: velocity to clean up
1261 *
1262 * Free the receive buffers for each ring slot and any
1263 * attached socket buffers that need to go away.
1264 */
1265
1266static void velocity_free_rd_ring(struct velocity_info *vptr)
1267{
1268 int i;
1269
0fe9f15e 1270 if (vptr->rx.info == NULL)
1da177e4
LT		 1271 return;
1272
1273 for (i = 0; i < vptr->options.numrx; i++) {
0fe9f15e
FR		 1274 struct velocity_rd_info *rd_info = &(vptr->rx.info[i]);
1275 struct rx_desc *rd = vptr->rx.ring + i;
b3c3e7d7
FR		 1276
1277 memset(rd, 0, sizeof(*rd));
1da177e4
LT		 1278
1279 if (!rd_info->skb)
1280 continue;
0fe9f15e 1281 pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1da177e4 1282 PCI_DMA_FROMDEVICE);
822f1a57 1283 rd_info->skb_dma = 0;
1da177e4
LT		 1284
1285 dev_kfree_skb(rd_info->skb);
1286 rd_info->skb = NULL;
1287 }
1288
0fe9f15e
FR		 1289 kfree(vptr->rx.info);
1290 vptr->rx.info = NULL;
1da177e4
LT		 1291}
1292
1293/**
1294 * velocity_init_td_ring - set up transmit ring
1295 * @vptr: velocity
1296 *
1297 * Set up the transmit ring and chain the ring pointers together.
1298 * Returns zero on success or a negative posix errno code for
1299 * failure.
1300 */
6aa20a22 1301
1da177e4
LT		 1302static int velocity_init_td_ring(struct velocity_info *vptr)
1303{
1da177e4 1304 dma_addr_t curr;
0d1cfd20 1305 int j;
1da177e4
LT		 1306
1307 /* Init the TD ring entries */
0fe9f15e
FR		 1308 for (j = 0; j < vptr->tx.numq; j++) {
1309 curr = vptr->tx.pool_dma[j];
1da177e4 1310
0fe9f15e 1311 vptr->tx.infos[j] = kcalloc(vptr->options.numtx,
ae94607d
MK		 1312 sizeof(struct velocity_td_info),
1313 GFP_KERNEL);
0fe9f15e 1314 if (!vptr->tx.infos[j]) {
1da177e4 1315 while(--j >= 0)
0fe9f15e 1316 kfree(vptr->tx.infos[j]);
1da177e4
LT		 1317 return -ENOMEM;
1318 }
1da177e4 1319
0fe9f15e 1320 vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0;
1da177e4
LT		 1321 }
1322 return 0;
1323}
1324
1325/*
1326 * FIXME: could we merge this with velocity_free_tx_buf ?
1327 */
1328
1329static void velocity_free_td_ring_entry(struct velocity_info *vptr,
1330 int q, int n)
1331{
0fe9f15e 1332 struct velocity_td_info * td_info = &(vptr->tx.infos[q][n]);
1da177e4 1333 int i;
6aa20a22 1334
1da177e4
LT		 1335 if (td_info == NULL)
1336 return;
6aa20a22 1337
1da177e4
LT		 1338 if (td_info->skb) {
1339 for (i = 0; i < td_info->nskb_dma; i++)
1340 {
1341 if (td_info->skb_dma[i]) {
6aa20a22 1342 pci_unmap_single(vptr->pdev, td_info->skb_dma[i],
1da177e4 1343 td_info->skb->len, PCI_DMA_TODEVICE);
822f1a57 1344 td_info->skb_dma[i] = 0;
1da177e4
LT		 1345 }
1346 }
1347 dev_kfree_skb(td_info->skb);
1348 td_info->skb = NULL;
1349 }
1350}
1351
1352/**
1353 * velocity_free_td_ring - free td ring
1354 * @vptr: velocity
1355 *
1356 * Free up the transmit ring for this particular velocity adapter.
1357 * We free the ring contents but not the ring itself.
1358 */
6aa20a22 1359
1da177e4
LT		 1360static void velocity_free_td_ring(struct velocity_info *vptr)
1361{
1362 int i, j;
1363
0fe9f15e
FR		 1364 for (j = 0; j < vptr->tx.numq; j++) {
1365 if (vptr->tx.infos[j] == NULL)
1da177e4
LT		 1366 continue;
1367 for (i = 0; i < vptr->options.numtx; i++) {
1368 velocity_free_td_ring_entry(vptr, j, i);
1369
1370 }
0fe9f15e
FR		 1371 kfree(vptr->tx.infos[j]);
1372 vptr->tx.infos[j] = NULL;
1da177e4
LT		 1373 }
1374}
1375
1376/**
1377 * velocity_rx_srv - service RX interrupt
1378 * @vptr: velocity
1379 * @status: adapter status (unused)
1380 *
1381 * Walk the receive ring of the velocity adapter and remove
1382 * any received packets from the receive queue. Hand the ring
1383 * slots back to the adapter for reuse.
1384 */
6aa20a22 1385
1da177e4
LT		 1386static int velocity_rx_srv(struct velocity_info *vptr, int status)
1387{
553e2335 1388 struct net_device_stats *stats = &vptr->dev->stats;
0fe9f15e 1389 int rd_curr = vptr->rx.curr;
1da177e4
LT		 1390 int works = 0;
1391
1392 do {
0fe9f15e 1393 struct rx_desc *rd = vptr->rx.ring + rd_curr;
1da177e4 1394
0fe9f15e 1395 if (!vptr->rx.info[rd_curr].skb)
1da177e4
LT		 1396 break;
1397
4a51c0d0 1398 if (rd->rdesc0.len & OWNED_BY_NIC)
1da177e4
LT		 1399 break;
1400
1401 rmb();
1402
1403 /*
1404 * Don't drop CE or RL error frame although RXOK is off
1405 */
4a51c0d0 1406 if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) {
1da177e4
LT		 1407 if (velocity_receive_frame(vptr, rd_curr) < 0)
1408 stats->rx_dropped++;
1409 } else {
1410 if (rd->rdesc0.RSR & RSR_CRC)
1411 stats->rx_crc_errors++;
1412 if (rd->rdesc0.RSR & RSR_FAE)
1413 stats->rx_frame_errors++;
1414
1415 stats->rx_dropped++;
1416 }
1417
4a51c0d0 1418 rd->size |= RX_INTEN;
1da177e4 1419
1da177e4
LT		 1420 rd_curr++;
1421 if (rd_curr >= vptr->options.numrx)
1422 rd_curr = 0;
1423 } while (++works <= 15);
1424
0fe9f15e 1425 vptr->rx.curr = rd_curr;
1da177e4 1426
28133176
FR		 1427 if ((works > 0) && (velocity_rx_refill(vptr) > 0))
1428 velocity_give_many_rx_descs(vptr);
1da177e4
LT		 1429
1430 VAR_USED(stats);
1431 return works;
1432}
1433
1434/**
1435 * velocity_rx_csum - checksum process
1436 * @rd: receive packet descriptor
1437 * @skb: network layer packet buffer
1438 *
1439 * Process the status bits for the received packet and determine
1440 * if the checksum was computed and verified by the hardware
1441 */
6aa20a22 1442
1da177e4
LT		 1443static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb)
1444{
1445 skb->ip_summed = CHECKSUM_NONE;
1446
1447 if (rd->rdesc1.CSM & CSM_IPKT) {
1448 if (rd->rdesc1.CSM & CSM_IPOK) {
6aa20a22 1449 if ((rd->rdesc1.CSM & CSM_TCPKT) ||
1da177e4
LT		 1450 (rd->rdesc1.CSM & CSM_UDPKT)) {
1451 if (!(rd->rdesc1.CSM & CSM_TUPOK)) {
1452 return;
1453 }
1454 }
1455 skb->ip_summed = CHECKSUM_UNNECESSARY;
1456 }
1457 }
1458}
1459
1460/**
1461 * velocity_rx_copy - in place Rx copy for small packets
1462 * @rx_skb: network layer packet buffer candidate
1463 * @pkt_size: received data size
1464 * @rd: receive packet descriptor
1465 * @dev: network device
1466 *
1467 * Replace the current skb that is scheduled for Rx processing by a
1468 * shorter, immediatly allocated skb, if the received packet is small
1469 * enough. This function returns a negative value if the received
1470 * packet is too big or if memory is exhausted.
1471 */
c73d2589
SH		 1472static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size,
1473 struct velocity_info *vptr)
1da177e4
LT		 1474{
1475 int ret = -1;
1da177e4
LT		 1476 if (pkt_size < rx_copybreak) {
1477 struct sk_buff *new_skb;
1478
c73d2589 1479 new_skb = netdev_alloc_skb(vptr->dev, pkt_size + 2);
1da177e4 1480 if (new_skb) {
1da177e4 1481 new_skb->ip_summed = rx_skb[0]->ip_summed;
c73d2589
SH		 1482 skb_reserve(new_skb, 2);
1483 skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size);
1da177e4
LT		 1484 *rx_skb = new_skb;
1485 ret = 0;
1486 }
6aa20a22 1487
1da177e4
LT		 1488 }
1489 return ret;
1490}
1491
1492/**
1493 * velocity_iph_realign - IP header alignment
1494 * @vptr: velocity we are handling
1495 * @skb: network layer packet buffer
1496 * @pkt_size: received data size
1497 *
1498 * Align IP header on a 2 bytes boundary. This behavior can be
1499 * configured by the user.
1500 */
1501static inline void velocity_iph_realign(struct velocity_info *vptr,
1502 struct sk_buff *skb, int pkt_size)
1503{
1da177e4 1504 if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) {
c03571a3 1505 memmove(skb->data + 2, skb->data, pkt_size);
1da177e4
LT		 1506 skb_reserve(skb, 2);
1507 }
1508}
1509
1510/**
1511 * velocity_receive_frame - received packet processor
1512 * @vptr: velocity we are handling
1513 * @idx: ring index
6aa20a22 1514 *
1da177e4
LT		 1515 * A packet has arrived. We process the packet and if appropriate
1516 * pass the frame up the network stack
1517 */
6aa20a22 1518
1da177e4
LT		 1519static int velocity_receive_frame(struct velocity_info *vptr, int idx)
1520{
1521 void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int);
553e2335 1522 struct net_device_stats *stats = &vptr->dev->stats;
0fe9f15e
FR		 1523 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1524 struct rx_desc *rd = &(vptr->rx.ring[idx]);
4a51c0d0 1525 int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff;
1da177e4
LT		 1526 struct sk_buff *skb;
1527
1528 if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) {
1529 VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name);
1530 stats->rx_length_errors++;
1531 return -EINVAL;
1532 }
1533
1534 if (rd->rdesc0.RSR & RSR_MAR)
553e2335 1535 stats->multicast++;
1da177e4
LT		 1536
1537 skb = rd_info->skb;
1da177e4
LT		 1538
1539 pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma,
0fe9f15e 1540 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
1da177e4
LT		 1541
1542 /*
1543 * Drop frame not meeting IEEE 802.3
1544 */
6aa20a22 1545
1da177e4
LT		 1546 if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) {
1547 if (rd->rdesc0.RSR & RSR_RL) {
1548 stats->rx_length_errors++;
1549 return -EINVAL;
1550 }
1551 }
1552
1553 pci_action = pci_dma_sync_single_for_device;
1554
1555 velocity_rx_csum(rd, skb);
1556
1557 if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) {
1558 velocity_iph_realign(vptr, skb, pkt_len);
1559 pci_action = pci_unmap_single;
1560 rd_info->skb = NULL;
1561 }
1562
0fe9f15e 1563 pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz,
1da177e4
LT		 1564 PCI_DMA_FROMDEVICE);
1565
1566 skb_put(skb, pkt_len - 4);
4c13eb66 1567 skb->protocol = eth_type_trans(skb, vptr->dev);
1da177e4 1568
d4f73c8e
FR		 1569 if (vptr->vlgrp && (rd->rdesc0.RSR & RSR_DETAG)) {
1570 vlan_hwaccel_rx(skb, vptr->vlgrp,
1571 swab16(le16_to_cpu(rd->rdesc1.PQTAG)));
1572 } else
1573 netif_rx(skb);
1574
1da177e4 1575 stats->rx_bytes += pkt_len;
1da177e4
LT		 1576
1577 return 0;
1578}
1579
1580/**
1581 * velocity_alloc_rx_buf - allocate aligned receive buffer
1582 * @vptr: velocity
1583 * @idx: ring index
1584 *
1585 * Allocate a new full sized buffer for the reception of a frame and
1586 * map it into PCI space for the hardware to use. The hardware
1587 * requires *64* byte alignment of the buffer which makes life
1588 * less fun than would be ideal.
1589 */
6aa20a22 1590
1da177e4
LT		 1591static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx)
1592{
0fe9f15e
FR		 1593 struct rx_desc *rd = &(vptr->rx.ring[idx]);
1594 struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]);
1da177e4 1595
0fe9f15e 1596 rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64);
1da177e4
LT		 1597 if (rd_info->skb == NULL)
1598 return -ENOMEM;
1599
1600 /*
1601 * Do the gymnastics to get the buffer head for data at
1602 * 64byte alignment.
1603 */
689be439 1604 skb_reserve(rd_info->skb, (unsigned long) rd_info->skb->data & 63);
0fe9f15e
FR		 1605 rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data,
1606 vptr->rx.buf_sz, PCI_DMA_FROMDEVICE);
6aa20a22 1607
1da177e4
LT		 1608 /*
1609 * Fill in the descriptor to match
0fe9f15e 1610 */
6aa20a22 1611
1da177e4 1612 *((u32 *) & (rd->rdesc0)) = 0;
0fe9f15e 1613 rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN;
1da177e4
LT		 1614 rd->pa_low = cpu_to_le32(rd_info->skb_dma);
1615 rd->pa_high = 0;
1616 return 0;
1617}
1618
1619/**
1620 * tx_srv - transmit interrupt service
1621 * @vptr; Velocity
1622 * @status:
1623 *
1624 * Scan the queues looking for transmitted packets that
1625 * we can complete and clean up. Update any statistics as
3a4fa0a2 1626 * necessary/
1da177e4 1627 */
6aa20a22 1628
1da177e4
LT		 1629static int velocity_tx_srv(struct velocity_info *vptr, u32 status)
1630{
1631 struct tx_desc *td;
1632 int qnum;
1633 int full = 0;
1634 int idx;
1635 int works = 0;
1636 struct velocity_td_info *tdinfo;
553e2335 1637 struct net_device_stats *stats = &vptr->dev->stats;
1da177e4 1638
0fe9f15e
FR		 1639 for (qnum = 0; qnum < vptr->tx.numq; qnum++) {
1640 for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0;
1da177e4
LT		 1641 idx = (idx + 1) % vptr->options.numtx) {
1642
1643 /*
1644 * Get Tx Descriptor
1645 */
0fe9f15e
FR		 1646 td = &(vptr->tx.rings[qnum][idx]);
1647 tdinfo = &(vptr->tx.infos[qnum][idx]);
1da177e4 1648
4a51c0d0 1649 if (td->tdesc0.len & OWNED_BY_NIC)
1da177e4
LT		 1650 break;
1651
1652 if ((works++ > 15))
1653 break;
1654
1655 if (td->tdesc0.TSR & TSR0_TERR) {
1656 stats->tx_errors++;
1657 stats->tx_dropped++;
1658 if (td->tdesc0.TSR & TSR0_CDH)
1659 stats->tx_heartbeat_errors++;
1660 if (td->tdesc0.TSR & TSR0_CRS)
1661 stats->tx_carrier_errors++;
1662 if (td->tdesc0.TSR & TSR0_ABT)
1663 stats->tx_aborted_errors++;
1664 if (td->tdesc0.TSR & TSR0_OWC)
1665 stats->tx_window_errors++;
1666 } else {
1667 stats->tx_packets++;
1668 stats->tx_bytes += tdinfo->skb->len;
1669 }
1670 velocity_free_tx_buf(vptr, tdinfo);
0fe9f15e 1671 vptr->tx.used[qnum]--;
1da177e4 1672 }
0fe9f15e 1673 vptr->tx.tail[qnum] = idx;
1da177e4
LT		 1674
1675 if (AVAIL_TD(vptr, qnum) < 1) {
1676 full = 1;
1677 }
1678 }
1679 /*
1680 * Look to see if we should kick the transmit network
1681 * layer for more work.
1682 */
1683 if (netif_queue_stopped(vptr->dev) && (full == 0)
1684 && (!(vptr->mii_status & VELOCITY_LINK_FAIL))) {
1685 netif_wake_queue(vptr->dev);
1686 }
1687 return works;
1688}
1689
1690/**
1691 * velocity_print_link_status - link status reporting
1692 * @vptr: velocity to report on
1693 *
1694 * Turn the link status of the velocity card into a kernel log
1695 * description of the new link state, detailing speed and duplex
1696 * status
1697 */
1698
1699static void velocity_print_link_status(struct velocity_info *vptr)
1700{
1701
1702 if (vptr->mii_status & VELOCITY_LINK_FAIL) {
1703 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name);
1704 } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
b4fea61a 1705 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name);
1da177e4
LT		 1706
1707 if (vptr->mii_status & VELOCITY_SPEED_1000)
1708 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
1709 else if (vptr->mii_status & VELOCITY_SPEED_100)
1710 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
1711 else
1712 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
1713
1714 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
1715 VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
1716 else
1717 VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
1718 } else {
1719 VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name);
1720 switch (vptr->options.spd_dpx) {
1721 case SPD_DPX_100_HALF:
1722 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
1723 break;
1724 case SPD_DPX_100_FULL:
1725 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
1726 break;
1727 case SPD_DPX_10_HALF:
1728 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
1729 break;
1730 case SPD_DPX_10_FULL:
1731 VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
1732 break;
1733 default:
1734 break;
1735 }
1736 }
1737}
1738
1739/**
1740 * velocity_error - handle error from controller
1741 * @vptr: velocity
1742 * @status: card status
1743 *
1744 * Process an error report from the hardware and attempt to recover
6aa20a22 1745 * the card itself. At the moment we cannot recover from some
1da177e4
LT		 1746 * theoretically impossible errors but this could be fixed using
1747 * the pci_device_failed logic to bounce the hardware
1748 *
1749 */
6aa20a22 1750
1da177e4
LT		 1751static void velocity_error(struct velocity_info *vptr, int status)
1752{
1753
1754 if (status & ISR_TXSTLI) {
1755 struct mac_regs __iomem * regs = vptr->mac_regs;
1756
0e6ff158 1757 printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(&regs->TDIdx[0]));
1da177e4
LT		 1758 BYTE_REG_BITS_ON(TXESR_TDSTR, &regs->TXESR);
1759 writew(TRDCSR_RUN, &regs->TDCSRClr);
1760 netif_stop_queue(vptr->dev);
6aa20a22 1761
1da177e4
LT		 1762 /* FIXME: port over the pci_device_failed code and use it
1763 here */
1764 }
1765
1766 if (status & ISR_SRCI) {
1767 struct mac_regs __iomem * regs = vptr->mac_regs;
1768 int linked;
1769
1770 if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
1771 vptr->mii_status = check_connection_type(regs);
1772
1773 /*
6aa20a22 1774 * If it is a 3119, disable frame bursting in
1da177e4
LT		 1775 * halfduplex mode and enable it in fullduplex
1776 * mode
1777 */
1778 if (vptr->rev_id < REV_ID_VT3216_A0) {
1779 if (vptr->mii_status | VELOCITY_DUPLEX_FULL)
1780 BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
1781 else
1782 BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
1783 }
1784 /*
1785 * Only enable CD heart beat counter in 10HD mode
1786 */
1787 if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10)) {
1788 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
1789 } else {
1790 BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
1791 }
1792 }
1793 /*
1794 * Get link status from PHYSR0
1795 */
1796 linked = readb(&regs->PHYSR0) & PHYSR0_LINKGD;
1797
1798 if (linked) {
1799 vptr->mii_status &= ~VELOCITY_LINK_FAIL;
8a22dddb 1800 netif_carrier_on(vptr->dev);
1da177e4
LT		 1801 } else {
1802 vptr->mii_status |= VELOCITY_LINK_FAIL;
8a22dddb 1803 netif_carrier_off(vptr->dev);
1da177e4
LT		 1804 }
1805
1806 velocity_print_link_status(vptr);
1807 enable_flow_control_ability(vptr);
1808
1809 /*
6aa20a22 1810 * Re-enable auto-polling because SRCI will disable
1da177e4
LT		 1811 * auto-polling
1812 */
6aa20a22 1813
1da177e4
LT		 1814 enable_mii_autopoll(regs);
1815
1816 if (vptr->mii_status & VELOCITY_LINK_FAIL)
1817 netif_stop_queue(vptr->dev);
1818 else
1819 netif_wake_queue(vptr->dev);
1820
1821 };
1822 if (status & ISR_MIBFI)
1823 velocity_update_hw_mibs(vptr);
1824 if (status & ISR_LSTEI)
1825 mac_rx_queue_wake(vptr->mac_regs);
1826}
1827
1828/**
1829 * velocity_free_tx_buf - free transmit buffer
1830 * @vptr: velocity
1831 * @tdinfo: buffer
1832 *
1833 * Release an transmit buffer. If the buffer was preallocated then
1834 * recycle it, if not then unmap the buffer.
1835 */
6aa20a22 1836
1da177e4
LT		 1837static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_info *tdinfo)
1838{
1839 struct sk_buff *skb = tdinfo->skb;
1840 int i;
59f8e169 1841 int pktlen;
1da177e4
LT		 1842
1843 /*
1844 * Don't unmap the pre-allocated tx_bufs
1845 */
580a6902 1846 if (tdinfo->skb_dma) {
1da177e4 1847
59f8e169 1848 pktlen = (skb->len > ETH_ZLEN ? : ETH_ZLEN);
1da177e4
LT		 1849 for (i = 0; i < tdinfo->nskb_dma; i++) {
1850#ifdef VELOCITY_ZERO_COPY_SUPPORT
4a51c0d0 1851 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], le16_to_cpu(td->tdesc1.len), PCI_DMA_TODEVICE);
1da177e4 1852#else
59f8e169 1853 pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], pktlen, PCI_DMA_TODEVICE);
1da177e4
LT		 1854#endif
1855 tdinfo->skb_dma[i] = 0;
1856 }
1857 }
1858 dev_kfree_skb_irq(skb);
1859 tdinfo->skb = NULL;
1860}
1861
3c4dc711
FR		 1862static int velocity_init_rings(struct velocity_info *vptr, int mtu)
1863{
1864 int ret;
1865
1866 velocity_set_rxbufsize(vptr, mtu);
1867
1868 ret = velocity_init_dma_rings(vptr);
1869 if (ret < 0)
1870 goto out;
1871
1872 ret = velocity_init_rd_ring(vptr);
1873 if (ret < 0)
1874 goto err_free_dma_rings_0;
1875
1876 ret = velocity_init_td_ring(vptr);
1877 if (ret < 0)
1878 goto err_free_rd_ring_1;
1879out:
1880 return ret;
1881
1882err_free_rd_ring_1:
1883 velocity_free_rd_ring(vptr);
1884err_free_dma_rings_0:
1885 velocity_free_dma_rings(vptr);
1886 goto out;
1887}
1888
1889static void velocity_free_rings(struct velocity_info *vptr)
1890{
1891 velocity_free_td_ring(vptr);
1892 velocity_free_rd_ring(vptr);
1893 velocity_free_dma_rings(vptr);
1894}
1895
1da177e4
LT		 1896/**
1897 * velocity_open - interface activation callback
1898 * @dev: network layer device to open
1899 *
1900 * Called when the network layer brings the interface up. Returns
1901 * a negative posix error code on failure, or zero on success.
1902 *
1903 * All the ring allocation and set up is done on open for this
1904 * adapter to minimise memory usage when inactive
1905 */
6aa20a22 1906
1da177e4
LT		 1907static int velocity_open(struct net_device *dev)
1908{
8ab6f3f7 1909 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 1910 int ret;
1911
3c4dc711 1912 ret = velocity_init_rings(vptr, dev->mtu);
1da177e4
LT		 1913 if (ret < 0)
1914 goto out;
1915
6aa20a22 1916 /* Ensure chip is running */
1da177e4 1917 pci_set_power_state(vptr->pdev, PCI_D0);
6aa20a22 1918
28133176
FR		 1919 velocity_give_many_rx_descs(vptr);
1920
1da177e4
LT		 1921 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
1922
1fb9df5d 1923 ret = request_irq(vptr->pdev->irq, &velocity_intr, IRQF_SHARED,
1da177e4
LT		 1924 dev->name, dev);
1925 if (ret < 0) {
1926 /* Power down the chip */
1927 pci_set_power_state(vptr->pdev, PCI_D3hot);
3c4dc711
FR		 1928 velocity_free_rings(vptr);
1929 goto out;
1da177e4
LT		 1930 }
1931
1932 mac_enable_int(vptr->mac_regs);
1933 netif_start_queue(dev);
1934 vptr->flags |= VELOCITY_FLAGS_OPENED;
1935out:
1936 return ret;
1da177e4
LT		 1937}
1938
6aa20a22 1939/**
1da177e4
LT		 1940 * velocity_change_mtu - MTU change callback
1941 * @dev: network device
1942 * @new_mtu: desired MTU
1943 *
1944 * Handle requests from the networking layer for MTU change on
1945 * this interface. It gets called on a change by the network layer.
1946 * Return zero for success or negative posix error code.
1947 */
6aa20a22 1948
1da177e4
LT		 1949static int velocity_change_mtu(struct net_device *dev, int new_mtu)
1950{
8ab6f3f7 1951 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 1952 int ret = 0;
1953
1954 if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) {
6aa20a22 1955 VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n",
1da177e4 1956 vptr->dev->name);
3c4dc711
FR		 1957 ret = -EINVAL;
1958 goto out_0;
1da177e4
LT		 1959 }
1960
bd7b3f34
SH		 1961 if (!netif_running(dev)) {
1962 dev->mtu = new_mtu;
3c4dc711 1963 goto out_0;
bd7b3f34
SH		 1964 }
1965
3c4dc711
FR		 1966 if (dev->mtu != new_mtu) {
1967 struct velocity_info *tmp_vptr;
1968 unsigned long flags;
1969 struct rx_info rx;
1970 struct tx_info tx;
1971
1972 tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL);
1973 if (!tmp_vptr) {
1974 ret = -ENOMEM;
1975 goto out_0;
1976 }
1977
1978 tmp_vptr->dev = dev;
1979 tmp_vptr->pdev = vptr->pdev;
1980 tmp_vptr->options = vptr->options;
1981 tmp_vptr->tx.numq = vptr->tx.numq;
1982
1983 ret = velocity_init_rings(tmp_vptr, new_mtu);
1984 if (ret < 0)
1985 goto out_free_tmp_vptr_1;
1986
1da177e4
LT		 1987 spin_lock_irqsave(&vptr->lock, flags);
1988
1989 netif_stop_queue(dev);
1990 velocity_shutdown(vptr);
1991
3c4dc711
FR		 1992 rx = vptr->rx;
1993 tx = vptr->tx;
1da177e4 1994
3c4dc711
FR		 1995 vptr->rx = tmp_vptr->rx;
1996 vptr->tx = tmp_vptr->tx;
1da177e4 1997
3c4dc711
FR		 1998 tmp_vptr->rx = rx;
1999 tmp_vptr->tx = tx;
9088d9a4 2000
3c4dc711 2001 dev->mtu = new_mtu;
1da177e4 2002
3c4dc711 2003 velocity_give_many_rx_descs(vptr);
1da177e4
LT		 2004
2005 velocity_init_registers(vptr, VELOCITY_INIT_COLD);
2006
2007 mac_enable_int(vptr->mac_regs);
2008 netif_start_queue(dev);
3c4dc711 2009
1da177e4 2010 spin_unlock_irqrestore(&vptr->lock, flags);
1da177e4 2011
3c4dc711
FR		 2012 velocity_free_rings(tmp_vptr);
2013
2014out_free_tmp_vptr_1:
2015 kfree(tmp_vptr);
2016 }
2017out_0:
1da177e4
LT		 2018 return ret;
2019}
2020
2021/**
2022 * velocity_shutdown - shut down the chip
2023 * @vptr: velocity to deactivate
2024 *
2025 * Shuts down the internal operations of the velocity and
2026 * disables interrupts, autopolling, transmit and receive
2027 */
6aa20a22 2028
1da177e4
LT		 2029static void velocity_shutdown(struct velocity_info *vptr)
2030{
2031 struct mac_regs __iomem * regs = vptr->mac_regs;
2032 mac_disable_int(regs);
2033 writel(CR0_STOP, &regs->CR0Set);
2034 writew(0xFFFF, &regs->TDCSRClr);
2035 writeb(0xFF, &regs->RDCSRClr);
2036 safe_disable_mii_autopoll(regs);
2037 mac_clear_isr(regs);
2038}
2039
2040/**
2041 * velocity_close - close adapter callback
2042 * @dev: network device
2043 *
2044 * Callback from the network layer when the velocity is being
2045 * deactivated by the network layer
2046 */
2047
2048static int velocity_close(struct net_device *dev)
2049{
8ab6f3f7 2050 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2051
2052 netif_stop_queue(dev);
2053 velocity_shutdown(vptr);
2054
2055 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED)
2056 velocity_get_ip(vptr);
2057 if (dev->irq != 0)
2058 free_irq(dev->irq, dev);
6aa20a22 2059
1da177e4
LT		 2060 /* Power down the chip */
2061 pci_set_power_state(vptr->pdev, PCI_D3hot);
6aa20a22 2062
1da177e4
LT		 2063 velocity_free_rings(vptr);
2064
2065 vptr->flags &= (~VELOCITY_FLAGS_OPENED);
2066 return 0;
2067}
2068
2069/**
2070 * velocity_xmit - transmit packet callback
2071 * @skb: buffer to transmit
2072 * @dev: network device
2073 *
2074 * Called by the networ layer to request a packet is queued to
2075 * the velocity. Returns zero on success.
2076 */
6aa20a22 2077
1da177e4
LT		 2078static int velocity_xmit(struct sk_buff *skb, struct net_device *dev)
2079{
8ab6f3f7 2080 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2081 int qnum = 0;
2082 struct tx_desc *td_ptr;
2083 struct velocity_td_info *tdinfo;
2084 unsigned long flags;
59f8e169 2085 int pktlen;
580a6902
FR		 2086 __le16 len;
2087 int index;
2088
2089
59f8e169
DJ		 2090 if (skb_padto(skb, ETH_ZLEN))
2091 goto out;
2092 pktlen = max_t(unsigned int, skb->len, ETH_ZLEN);
580a6902
FR		 2093
2094 len = cpu_to_le16(pktlen);
1da177e4 2095
364c6bad
HX		 2096#ifdef VELOCITY_ZERO_COPY_SUPPORT
2097 if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) {
2098 kfree_skb(skb);
2099 return 0;
2100 }
2101#endif
2102
1da177e4
LT		 2103 spin_lock_irqsave(&vptr->lock, flags);
2104
0fe9f15e
FR		 2105 index = vptr->tx.curr[qnum];
2106 td_ptr = &(vptr->tx.rings[qnum][index]);
2107 tdinfo = &(vptr->tx.infos[qnum][index]);
1da177e4 2108
1da177e4 2109 td_ptr->tdesc1.TCR = TCR0_TIC;
4a51c0d0 2110 td_ptr->td_buf[0].size &= ~TD_QUEUE;
1da177e4 2111
1da177e4
LT		 2112#ifdef VELOCITY_ZERO_COPY_SUPPORT
2113 if (skb_shinfo(skb)->nr_frags > 0) {
2114 int nfrags = skb_shinfo(skb)->nr_frags;
2115 tdinfo->skb = skb;
2116 if (nfrags > 6) {
d626f62b 2117 skb_copy_from_linear_data(skb, tdinfo->buf, skb->len);
1da177e4 2118 tdinfo->skb_dma[0] = tdinfo->buf_dma;
4a51c0d0 2119 td_ptr->tdesc0.len = len;
0fe9f15e
FR		 2120 td_ptr->tx.buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2121 td_ptr->tx.buf[0].pa_high = 0;
2122 td_ptr->tx.buf[0].size = len; /* queue is 0 anyway */
1da177e4 2123 tdinfo->nskb_dma = 1;
1da177e4
LT		 2124 } else {
2125 int i = 0;
2126 tdinfo->nskb_dma = 0;
4a51c0d0
AV		 2127 tdinfo->skb_dma[i] = pci_map_single(vptr->pdev, skb->data,
2128 skb_headlen(skb), PCI_DMA_TODEVICE);
1da177e4 2129
4a51c0d0 2130 td_ptr->tdesc0.len = len;
1da177e4
LT		 2131
2132 /* FIXME: support 48bit DMA later */
0fe9f15e
FR		 2133 td_ptr->tx.buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma);
2134 td_ptr->tx.buf[i].pa_high = 0;
2135 td_ptr->tx.buf[i].size = cpu_to_le16(skb_headlen(skb));
1da177e4
LT		 2136
2137 for (i = 0; i < nfrags; i++) {
2138 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4a51c0d0 2139 void *addr = (void *)page_address(frag->page) + frag->page_offset;
1da177e4
LT		 2140
2141 tdinfo->skb_dma[i + 1] = pci_map_single(vptr->pdev, addr, frag->size, PCI_DMA_TODEVICE);
2142
0fe9f15e
FR		 2143 td_ptr->tx.buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]);
2144 td_ptr->tx.buf[i + 1].pa_high = 0;
2145 td_ptr->tx.buf[i + 1].size = cpu_to_le16(frag->size);
1da177e4
LT		 2146 }
2147 tdinfo->nskb_dma = i - 1;
1da177e4
LT		 2148 }
2149
2150 } else
2151#endif
2152 {
2153 /*
2154 * Map the linear network buffer into PCI space and
2155 * add it to the transmit ring.
2156 */
2157 tdinfo->skb = skb;
2158 tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE);
4a51c0d0 2159 td_ptr->tdesc0.len = len;
1da177e4
LT		 2160 td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]);
2161 td_ptr->td_buf[0].pa_high = 0;
4a51c0d0 2162 td_ptr->td_buf[0].size = len;
1da177e4 2163 tdinfo->nskb_dma = 1;
1da177e4 2164 }
4a51c0d0 2165 td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16;
1da177e4 2166
501e4d24 2167 if (vptr->vlgrp && vlan_tx_tag_present(skb)) {
4a51c0d0 2168 td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb));
1da177e4
LT		 2169 td_ptr->tdesc1.TCR |= TCR0_VETAG;
2170 }
2171
2172 /*
2173 * Handle hardware checksum
2174 */
2175 if ((vptr->flags & VELOCITY_FLAGS_TX_CSUM)
84fa7933 2176 && (skb->ip_summed == CHECKSUM_PARTIAL)) {
eddc9ec5 2177 const struct iphdr *ip = ip_hdr(skb);
1da177e4
LT		 2178 if (ip->protocol == IPPROTO_TCP)
2179 td_ptr->tdesc1.TCR |= TCR0_TCPCK;
2180 else if (ip->protocol == IPPROTO_UDP)
2181 td_ptr->tdesc1.TCR |= (TCR0_UDPCK);
2182 td_ptr->tdesc1.TCR |= TCR0_IPCK;
2183 }
2184 {
2185
2186 int prev = index - 1;
2187
2188 if (prev < 0)
2189 prev = vptr->options.numtx - 1;
4a51c0d0 2190 td_ptr->tdesc0.len |= OWNED_BY_NIC;
0fe9f15e
FR		 2191 vptr->tx.used[qnum]++;
2192 vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx;
1da177e4
LT		 2193
2194 if (AVAIL_TD(vptr, qnum) < 1)
2195 netif_stop_queue(dev);
2196
0fe9f15e 2197 td_ptr = &(vptr->tx.rings[qnum][prev]);
4a51c0d0 2198 td_ptr->td_buf[0].size |= TD_QUEUE;
1da177e4
LT		 2199 mac_tx_queue_wake(vptr->mac_regs, qnum);
2200 }
2201 dev->trans_start = jiffies;
2202 spin_unlock_irqrestore(&vptr->lock, flags);
580a6902
FR		 2203out:
2204 return NETDEV_TX_OK;
1da177e4
LT		 2205}
2206
2207/**
2208 * velocity_intr - interrupt callback
2209 * @irq: interrupt number
2210 * @dev_instance: interrupting device
1da177e4
LT		 2211 *
2212 * Called whenever an interrupt is generated by the velocity
2213 * adapter IRQ line. We may not be the source of the interrupt
2214 * and need to identify initially if we are, and if not exit as
2215 * efficiently as possible.
2216 */
6aa20a22 2217
3ca17dfb 2218static irqreturn_t velocity_intr(int irq, void *dev_instance)
1da177e4
LT		 2219{
2220 struct net_device *dev = dev_instance;
8ab6f3f7 2221 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2222 u32 isr_status;
2223 int max_count = 0;
2224
2225
2226 spin_lock(&vptr->lock);
2227 isr_status = mac_read_isr(vptr->mac_regs);
2228
2229 /* Not us ? */
2230 if (isr_status == 0) {
2231 spin_unlock(&vptr->lock);
2232 return IRQ_NONE;
2233 }
2234
2235 mac_disable_int(vptr->mac_regs);
2236
2237 /*
2238 * Keep processing the ISR until we have completed
2239 * processing and the isr_status becomes zero
2240 */
6aa20a22 2241
1da177e4
LT		 2242 while (isr_status != 0) {
2243 mac_write_isr(vptr->mac_regs, isr_status);
2244 if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI)))
2245 velocity_error(vptr, isr_status);
2246 if (isr_status & (ISR_PRXI | ISR_PPRXI))
2247 max_count += velocity_rx_srv(vptr, isr_status);
2248 if (isr_status & (ISR_PTXI | ISR_PPTXI))
2249 max_count += velocity_tx_srv(vptr, isr_status);
2250 isr_status = mac_read_isr(vptr->mac_regs);
2251 if (max_count > vptr->options.int_works)
2252 {
6aa20a22 2253 printk(KERN_WARNING "%s: excessive work at interrupt.\n",
1da177e4
LT		 2254 dev->name);
2255 max_count = 0;
2256 }
2257 }
2258 spin_unlock(&vptr->lock);
2259 mac_enable_int(vptr->mac_regs);
2260 return IRQ_HANDLED;
2261
2262}
2263
2264
2265/**
2266 * velocity_set_multi - filter list change callback
2267 * @dev: network device
2268 *
2269 * Called by the network layer when the filter lists need to change
2270 * for a velocity adapter. Reload the CAMs with the new address
2271 * filter ruleset.
2272 */
6aa20a22 2273
1da177e4
LT		 2274static void velocity_set_multi(struct net_device *dev)
2275{
8ab6f3f7 2276 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2277 struct mac_regs __iomem * regs = vptr->mac_regs;
2278 u8 rx_mode;
2279 int i;
2280 struct dev_mc_list *mclist;
2281
2282 if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
1da177e4
LT		 2283 writel(0xffffffff, &regs->MARCAM[0]);
2284 writel(0xffffffff, &regs->MARCAM[4]);
2285 rx_mode = (RCR_AM | RCR_AB | RCR_PROM);
2286 } else if ((dev->mc_count > vptr->multicast_limit)
2287 || (dev->flags & IFF_ALLMULTI)) {
2288 writel(0xffffffff, &regs->MARCAM[0]);
2289 writel(0xffffffff, &regs->MARCAM[4]);
2290 rx_mode = (RCR_AM | RCR_AB);
2291 } else {
2292 int offset = MCAM_SIZE - vptr->multicast_limit;
01faccbf 2293 mac_get_cam_mask(regs, vptr->mCAMmask);
1da177e4
LT		 2294
2295 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) {
01faccbf 2296 mac_set_cam(regs, i + offset, mclist->dmi_addr);
1da177e4
LT		 2297 vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7);
2298 }
2299
01faccbf 2300 mac_set_cam_mask(regs, vptr->mCAMmask);
5f5c4bdb 2301 rx_mode = RCR_AM | RCR_AB | RCR_AP;
1da177e4
LT		 2302 }
2303 if (dev->mtu > 1500)
2304 rx_mode |= RCR_AL;
2305
2306 BYTE_REG_BITS_ON(rx_mode, &regs->RCR);
2307
2308}
2309
2310/**
2311 * velocity_get_status - statistics callback
2312 * @dev: network device
2313 *
2314 * Callback from the network layer to allow driver statistics
2315 * to be resynchronized with hardware collected state. In the
2316 * case of the velocity we need to pull the MIB counters from
2317 * the hardware into the counters before letting the network
2318 * layer display them.
2319 */
6aa20a22 2320
1da177e4
LT		 2321static struct net_device_stats *velocity_get_stats(struct net_device *dev)
2322{
8ab6f3f7 2323 struct velocity_info *vptr = netdev_priv(dev);
6aa20a22 2324
1da177e4
LT		 2325 /* If the hardware is down, don't touch MII */
2326 if(!netif_running(dev))
553e2335 2327 return &dev->stats;
1da177e4
LT		 2328
2329 spin_lock_irq(&vptr->lock);
2330 velocity_update_hw_mibs(vptr);
2331 spin_unlock_irq(&vptr->lock);
2332
553e2335
ED		 2333 dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts];
2334 dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts];
2335 dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors];
1da177e4
LT		 2336
2337// unsigned long rx_dropped; /* no space in linux buffers */
553e2335 2338 dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions];
1da177e4
LT		 2339 /* detailed rx_errors: */
2340// unsigned long rx_length_errors;
2341// unsigned long rx_over_errors; /* receiver ring buff overflow */
553e2335 2342 dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE];
1da177e4
LT		 2343// unsigned long rx_frame_errors; /* recv'd frame alignment error */
2344// unsigned long rx_fifo_errors; /* recv'r fifo overrun */
2345// unsigned long rx_missed_errors; /* receiver missed packet */
2346
2347 /* detailed tx_errors */
2348// unsigned long tx_fifo_errors;
2349
553e2335 2350 return &dev->stats;
1da177e4
LT		 2351}
2352
2353
2354/**
2355 * velocity_ioctl - ioctl entry point
2356 * @dev: network device
2357 * @rq: interface request ioctl
2358 * @cmd: command code
2359 *
2360 * Called when the user issues an ioctl request to the network
2361 * device in question. The velocity interface supports MII.
2362 */
6aa20a22 2363
1da177e4
LT		 2364static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2365{
8ab6f3f7 2366 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2367 int ret;
2368
2369 /* If we are asked for information and the device is power
2370 saving then we need to bring the device back up to talk to it */
6aa20a22 2371
1da177e4
LT		 2372 if (!netif_running(dev))
2373 pci_set_power_state(vptr->pdev, PCI_D0);
6aa20a22 2374
1da177e4
LT		 2375 switch (cmd) {
2376 case SIOCGMIIPHY: /* Get address of MII PHY in use. */
2377 case SIOCGMIIREG: /* Read MII PHY register. */
2378 case SIOCSMIIREG: /* Write to MII PHY register. */
2379 ret = velocity_mii_ioctl(dev, rq, cmd);
2380 break;
2381
2382 default:
2383 ret = -EOPNOTSUPP;
2384 }
2385 if (!netif_running(dev))
2386 pci_set_power_state(vptr->pdev, PCI_D3hot);
6aa20a22
JG		 2387
2388
1da177e4
LT		 2389 return ret;
2390}
2391
2392/*
2393 * Definition for our device driver. The PCI layer interface
2394 * uses this to handle all our card discover and plugging
2395 */
6aa20a22 2396
1da177e4
LT		 2397static struct pci_driver velocity_driver = {
2398 .name = VELOCITY_NAME,
2399 .id_table = velocity_id_table,
2400 .probe = velocity_found1,
2401 .remove = __devexit_p(velocity_remove1),
2402#ifdef CONFIG_PM
2403 .suspend = velocity_suspend,
2404 .resume = velocity_resume,
2405#endif
2406};
2407
2408/**
2409 * velocity_init_module - load time function
2410 *
2411 * Called when the velocity module is loaded. The PCI driver
2412 * is registered with the PCI layer, and in turn will call
2413 * the probe functions for each velocity adapter installed
2414 * in the system.
2415 */
6aa20a22 2416
1da177e4
LT		 2417static int __init velocity_init_module(void)
2418{
2419 int ret;
2420
2421 velocity_register_notifier();
29917620 2422 ret = pci_register_driver(&velocity_driver);
1da177e4
LT		 2423 if (ret < 0)
2424 velocity_unregister_notifier();
2425 return ret;
2426}
2427
2428/**
2429 * velocity_cleanup - module unload
2430 *
2431 * When the velocity hardware is unloaded this function is called.
6aa20a22 2432 * It will clean up the notifiers and the unregister the PCI
1da177e4
LT		 2433 * driver interface for this hardware. This in turn cleans up
2434 * all discovered interfaces before returning from the function
2435 */
6aa20a22 2436
1da177e4
LT		 2437static void __exit velocity_cleanup_module(void)
2438{
2439 velocity_unregister_notifier();
2440 pci_unregister_driver(&velocity_driver);
2441}
2442
2443module_init(velocity_init_module);
2444module_exit(velocity_cleanup_module);
2445
2446
2447/*
2448 * MII access , media link mode setting functions
2449 */
6aa20a22
JG		 2450
2451
1da177e4
LT		 2452/**
2453 * mii_init - set up MII
2454 * @vptr: velocity adapter
2455 * @mii_status: links tatus
2456 *
2457 * Set up the PHY for the current link state.
2458 */
6aa20a22 2459
1da177e4
LT		 2460static void mii_init(struct velocity_info *vptr, u32 mii_status)
2461{
2462 u16 BMCR;
2463
2464 switch (PHYID_GET_PHY_ID(vptr->phy_id)) {
2465 case PHYID_CICADA_CS8201:
2466 /*
2467 * Reset to hardware default
2468 */
2469 MII_REG_BITS_OFF((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2470 /*
2471 * Turn on ECHODIS bit in NWay-forced full mode and turn it
6aa20a22 2472 * off it in NWay-forced half mode for NWay-forced v.s.
1da177e4
LT		 2473 * legacy-forced issue.
2474 */
2475 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2476 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2477 else
2478 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2479 /*
2480 * Turn on Link/Activity LED enable bit for CIS8201
2481 */
2482 MII_REG_BITS_ON(PLED_LALBE, MII_REG_PLED, vptr->mac_regs);
2483 break;
2484 case PHYID_VT3216_32BIT:
2485 case PHYID_VT3216_64BIT:
2486 /*
2487 * Reset to hardware default
2488 */
2489 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2490 /*
2491 * Turn on ECHODIS bit in NWay-forced full mode and turn it
6aa20a22 2492 * off it in NWay-forced half mode for NWay-forced v.s.
1da177e4
LT		 2493 * legacy-forced issue
2494 */
2495 if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
2496 MII_REG_BITS_ON(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2497 else
2498 MII_REG_BITS_OFF(TCSR_ECHODIS, MII_REG_TCSR, vptr->mac_regs);
2499 break;
2500
2501 case PHYID_MARVELL_1000:
2502 case PHYID_MARVELL_1000S:
2503 /*
6aa20a22 2504 * Assert CRS on Transmit
1da177e4
LT		 2505 */
2506 MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs);
2507 /*
6aa20a22 2508 * Reset to hardware default
1da177e4
LT		 2509 */
2510 MII_REG_BITS_ON((ANAR_ASMDIR | ANAR_PAUSE), MII_REG_ANAR, vptr->mac_regs);
2511 break;
2512 default:
2513 ;
2514 }
2515 velocity_mii_read(vptr->mac_regs, MII_REG_BMCR, &BMCR);
2516 if (BMCR & BMCR_ISO) {
2517 BMCR &= ~BMCR_ISO;
2518 velocity_mii_write(vptr->mac_regs, MII_REG_BMCR, BMCR);
2519 }
2520}
2521
2522/**
2523 * safe_disable_mii_autopoll - autopoll off
2524 * @regs: velocity registers
2525 *
2526 * Turn off the autopoll and wait for it to disable on the chip
2527 */
6aa20a22 2528
1da177e4
LT		 2529static void safe_disable_mii_autopoll(struct mac_regs __iomem * regs)
2530{
2531 u16 ww;
2532
2533 /* turn off MAUTO */
2534 writeb(0, &regs->MIICR);
2535 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2536 udelay(1);
2537 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
2538 break;
2539 }
2540}
2541
2542/**
2543 * enable_mii_autopoll - turn on autopolling
2544 * @regs: velocity registers
2545 *
2546 * Enable the MII link status autopoll feature on the Velocity
2547 * hardware. Wait for it to enable.
2548 */
2549
2550static void enable_mii_autopoll(struct mac_regs __iomem * regs)
2551{
2552 int ii;
2553
2554 writeb(0, &(regs->MIICR));
2555 writeb(MIIADR_SWMPL, &regs->MIIADR);
2556
2557 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2558 udelay(1);
2559 if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
2560 break;
2561 }
2562
2563 writeb(MIICR_MAUTO, &regs->MIICR);
2564
2565 for (ii = 0; ii < W_MAX_TIMEOUT; ii++) {
2566 udelay(1);
2567 if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, &regs->MIISR))
2568 break;
2569 }
2570
2571}
2572
2573/**
2574 * velocity_mii_read - read MII data
2575 * @regs: velocity registers
2576 * @index: MII register index
2577 * @data: buffer for received data
2578 *
2579 * Perform a single read of an MII 16bit register. Returns zero
2580 * on success or -ETIMEDOUT if the PHY did not respond.
2581 */
6aa20a22 2582
1da177e4
LT		 2583static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data)
2584{
2585 u16 ww;
2586
2587 /*
2588 * Disable MIICR_MAUTO, so that mii addr can be set normally
2589 */
2590 safe_disable_mii_autopoll(regs);
2591
2592 writeb(index, &regs->MIIADR);
2593
2594 BYTE_REG_BITS_ON(MIICR_RCMD, &regs->MIICR);
2595
2596 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2597 if (!(readb(&regs->MIICR) & MIICR_RCMD))
2598 break;
2599 }
2600
2601 *data = readw(&regs->MIIDATA);
2602
2603 enable_mii_autopoll(regs);
2604 if (ww == W_MAX_TIMEOUT)
2605 return -ETIMEDOUT;
2606 return 0;
2607}
2608
2609/**
2610 * velocity_mii_write - write MII data
2611 * @regs: velocity registers
2612 * @index: MII register index
2613 * @data: 16bit data for the MII register
2614 *
2615 * Perform a single write to an MII 16bit register. Returns zero
2616 * on success or -ETIMEDOUT if the PHY did not respond.
2617 */
6aa20a22 2618
1da177e4
LT		 2619static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data)
2620{
2621 u16 ww;
2622
2623 /*
2624 * Disable MIICR_MAUTO, so that mii addr can be set normally
2625 */
2626 safe_disable_mii_autopoll(regs);
2627
2628 /* MII reg offset */
2629 writeb(mii_addr, &regs->MIIADR);
2630 /* set MII data */
2631 writew(data, &regs->MIIDATA);
2632
2633 /* turn on MIICR_WCMD */
2634 BYTE_REG_BITS_ON(MIICR_WCMD, &regs->MIICR);
2635
2636 /* W_MAX_TIMEOUT is the timeout period */
2637 for (ww = 0; ww < W_MAX_TIMEOUT; ww++) {
2638 udelay(5);
2639 if (!(readb(&regs->MIICR) & MIICR_WCMD))
2640 break;
2641 }
2642 enable_mii_autopoll(regs);
2643
2644 if (ww == W_MAX_TIMEOUT)
2645 return -ETIMEDOUT;
2646 return 0;
2647}
2648
2649/**
2650 * velocity_get_opt_media_mode - get media selection
2651 * @vptr: velocity adapter
2652 *
2653 * Get the media mode stored in EEPROM or module options and load
2654 * mii_status accordingly. The requested link state information
2655 * is also returned.
2656 */
6aa20a22 2657
1da177e4
LT		 2658static u32 velocity_get_opt_media_mode(struct velocity_info *vptr)
2659{
2660 u32 status = 0;
2661
2662 switch (vptr->options.spd_dpx) {
2663 case SPD_DPX_AUTO:
2664 status = VELOCITY_AUTONEG_ENABLE;
2665 break;
2666 case SPD_DPX_100_FULL:
2667 status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL;
2668 break;
2669 case SPD_DPX_10_FULL:
2670 status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL;
2671 break;
2672 case SPD_DPX_100_HALF:
2673 status = VELOCITY_SPEED_100;
2674 break;
2675 case SPD_DPX_10_HALF:
2676 status = VELOCITY_SPEED_10;
2677 break;
2678 }
2679 vptr->mii_status = status;
2680 return status;
2681}
2682
2683/**
2684 * mii_set_auto_on - autonegotiate on
2685 * @vptr: velocity
2686 *
2687 * Enable autonegotation on this interface
2688 */
6aa20a22 2689
1da177e4
LT		 2690static void mii_set_auto_on(struct velocity_info *vptr)
2691{
2692 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs))
2693 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
2694 else
2695 MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2696}
2697
2698
2699/*
2700static void mii_set_auto_off(struct velocity_info * vptr)
2701{
2702 MII_REG_BITS_OFF(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs);
2703}
2704*/
2705
2706/**
2707 * set_mii_flow_control - flow control setup
2708 * @vptr: velocity interface
2709 *
2710 * Set up the flow control on this interface according to
2711 * the supplied user/eeprom options.
2712 */
6aa20a22 2713
1da177e4
LT		 2714static void set_mii_flow_control(struct velocity_info *vptr)
2715{
2716 /*Enable or Disable PAUSE in ANAR */
2717 switch (vptr->options.flow_cntl) {
2718 case FLOW_CNTL_TX:
2719 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2720 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2721 break;
2722
2723 case FLOW_CNTL_RX:
2724 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2725 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2726 break;
2727
2728 case FLOW_CNTL_TX_RX:
2729 MII_REG_BITS_ON(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2730 MII_REG_BITS_ON(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2731 break;
2732
2733 case FLOW_CNTL_DISABLE:
2734 MII_REG_BITS_OFF(ANAR_PAUSE, MII_REG_ANAR, vptr->mac_regs);
2735 MII_REG_BITS_OFF(ANAR_ASMDIR, MII_REG_ANAR, vptr->mac_regs);
2736 break;
2737 default:
2738 break;
2739 }
2740}
2741
2742/**
2743 * velocity_set_media_mode - set media mode
2744 * @mii_status: old MII link state
2745 *
2746 * Check the media link state and configure the flow control
2747 * PHY and also velocity hardware setup accordingly. In particular
2748 * we need to set up CD polling and frame bursting.
2749 */
6aa20a22 2750
1da177e4
LT		 2751static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
2752{
2753 u32 curr_status;
2754 struct mac_regs __iomem * regs = vptr->mac_regs;
2755
2756 vptr->mii_status = mii_check_media_mode(vptr->mac_regs);
2757 curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL);
2758
2759 /* Set mii link status */
2760 set_mii_flow_control(vptr);
2761
2762 /*
2763 Check if new status is consisent with current status
2764 if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE)
2765 || (mii_status==curr_status)) {
2766 vptr->mii_status=mii_check_media_mode(vptr->mac_regs);
2767 vptr->mii_status=check_connection_type(vptr->mac_regs);
2768 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n");
2769 return 0;
2770 }
2771 */
2772
2773 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) {
2774 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
2775 }
2776
2777 /*
2778 * If connection type is AUTO
2779 */
2780 if (mii_status & VELOCITY_AUTONEG_ENABLE) {
2781 VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n");
2782 /* clear force MAC mode bit */
2783 BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, &regs->CHIPGCR);
2784 /* set duplex mode of MAC according to duplex mode of MII */
2785 MII_REG_BITS_ON(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10, MII_REG_ANAR, vptr->mac_regs);
2786 MII_REG_BITS_ON(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2787 MII_REG_BITS_ON(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs);
2788
2789 /* enable AUTO-NEGO mode */
2790 mii_set_auto_on(vptr);
2791 } else {
2792 u16 ANAR;
2793 u8 CHIPGCR;
2794
2795 /*
2796 * 1. if it's 3119, disable frame bursting in halfduplex mode
2797 * and enable it in fullduplex mode
2798 * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR
2799 * 3. only enable CD heart beat counter in 10HD mode
2800 */
2801
2802 /* set force MAC mode bit */
2803 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
2804
2805 CHIPGCR = readb(&regs->CHIPGCR);
2806 CHIPGCR &= ~CHIPGCR_FCGMII;
2807
2808 if (mii_status & VELOCITY_DUPLEX_FULL) {
2809 CHIPGCR |= CHIPGCR_FCFDX;
2810 writeb(CHIPGCR, &regs->CHIPGCR);
2811 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
2812 if (vptr->rev_id < REV_ID_VT3216_A0)
2813 BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
2814 } else {
2815 CHIPGCR &= ~CHIPGCR_FCFDX;
2816 VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
2817 writeb(CHIPGCR, &regs->CHIPGCR);
2818 if (vptr->rev_id < REV_ID_VT3216_A0)
2819 BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
2820 }
2821
2822 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
2823
2824 if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10)) {
2825 BYTE_REG_BITS_OFF(TESTCFG_HBDIS, &regs->TESTCFG);
2826 } else {
2827 BYTE_REG_BITS_ON(TESTCFG_HBDIS, &regs->TESTCFG);
2828 }
2829 /* MII_REG_BITS_OFF(BMCR_SPEED1G, MII_REG_BMCR, vptr->mac_regs); */
2830 velocity_mii_read(vptr->mac_regs, MII_REG_ANAR, &ANAR);
2831 ANAR &= (~(ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10));
2832 if (mii_status & VELOCITY_SPEED_100) {
2833 if (mii_status & VELOCITY_DUPLEX_FULL)
2834 ANAR |= ANAR_TXFD;
2835 else
2836 ANAR |= ANAR_TX;
2837 } else {
2838 if (mii_status & VELOCITY_DUPLEX_FULL)
2839 ANAR |= ANAR_10FD;
2840 else
2841 ANAR |= ANAR_10;
2842 }
2843 velocity_mii_write(vptr->mac_regs, MII_REG_ANAR, ANAR);
2844 /* enable AUTO-NEGO mode */
2845 mii_set_auto_on(vptr);
2846 /* MII_REG_BITS_ON(BMCR_AUTO, MII_REG_BMCR, vptr->mac_regs); */
2847 }
2848 /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */
2849 /* vptr->mii_status=check_connection_type(vptr->mac_regs); */
2850 return VELOCITY_LINK_CHANGE;
2851}
2852
2853/**
2854 * mii_check_media_mode - check media state
2855 * @regs: velocity registers
2856 *
2857 * Check the current MII status and determine the link status
2858 * accordingly
2859 */
6aa20a22 2860
1da177e4
LT		 2861static u32 mii_check_media_mode(struct mac_regs __iomem * regs)
2862{
2863 u32 status = 0;
2864 u16 ANAR;
2865
2866 if (!MII_REG_BITS_IS_ON(BMSR_LNK, MII_REG_BMSR, regs))
2867 status |= VELOCITY_LINK_FAIL;
2868
2869 if (MII_REG_BITS_IS_ON(G1000CR_1000FD, MII_REG_G1000CR, regs))
2870 status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL;
2871 else if (MII_REG_BITS_IS_ON(G1000CR_1000, MII_REG_G1000CR, regs))
2872 status |= (VELOCITY_SPEED_1000);
2873 else {
2874 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2875 if (ANAR & ANAR_TXFD)
2876 status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL);
2877 else if (ANAR & ANAR_TX)
2878 status |= VELOCITY_SPEED_100;
2879 else if (ANAR & ANAR_10FD)
2880 status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL);
2881 else
2882 status |= (VELOCITY_SPEED_10);
2883 }
2884
2885 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2886 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2887 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2888 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2889 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2890 status |= VELOCITY_AUTONEG_ENABLE;
2891 }
2892 }
2893
2894 return status;
2895}
2896
2897static u32 check_connection_type(struct mac_regs __iomem * regs)
2898{
2899 u32 status = 0;
2900 u8 PHYSR0;
2901 u16 ANAR;
2902 PHYSR0 = readb(&regs->PHYSR0);
2903
2904 /*
2905 if (!(PHYSR0 & PHYSR0_LINKGD))
2906 status|=VELOCITY_LINK_FAIL;
2907 */
2908
2909 if (PHYSR0 & PHYSR0_FDPX)
2910 status |= VELOCITY_DUPLEX_FULL;
2911
2912 if (PHYSR0 & PHYSR0_SPDG)
2913 status |= VELOCITY_SPEED_1000;
59b693fb 2914 else if (PHYSR0 & PHYSR0_SPD10)
1da177e4
LT		 2915 status |= VELOCITY_SPEED_10;
2916 else
2917 status |= VELOCITY_SPEED_100;
2918
2919 if (MII_REG_BITS_IS_ON(BMCR_AUTO, MII_REG_BMCR, regs)) {
2920 velocity_mii_read(regs, MII_REG_ANAR, &ANAR);
2921 if ((ANAR & (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10))
2922 == (ANAR_TXFD | ANAR_TX | ANAR_10FD | ANAR_10)) {
2923 if (MII_REG_BITS_IS_ON(G1000CR_1000 | G1000CR_1000FD, MII_REG_G1000CR, regs))
2924 status |= VELOCITY_AUTONEG_ENABLE;
2925 }
2926 }
2927
2928 return status;
2929}
2930
2931/**
2932 * enable_flow_control_ability - flow control
2933 * @vptr: veloity to configure
2934 *
2935 * Set up flow control according to the flow control options
2936 * determined by the eeprom/configuration.
2937 */
2938
2939static void enable_flow_control_ability(struct velocity_info *vptr)
2940{
2941
2942 struct mac_regs __iomem * regs = vptr->mac_regs;
2943
2944 switch (vptr->options.flow_cntl) {
2945
2946 case FLOW_CNTL_DEFAULT:
2947 if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, &regs->PHYSR0))
2948 writel(CR0_FDXRFCEN, &regs->CR0Set);
2949 else
2950 writel(CR0_FDXRFCEN, &regs->CR0Clr);
2951
2952 if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, &regs->PHYSR0))
2953 writel(CR0_FDXTFCEN, &regs->CR0Set);
2954 else
2955 writel(CR0_FDXTFCEN, &regs->CR0Clr);
2956 break;
2957
2958 case FLOW_CNTL_TX:
2959 writel(CR0_FDXTFCEN, &regs->CR0Set);
2960 writel(CR0_FDXRFCEN, &regs->CR0Clr);
2961 break;
2962
2963 case FLOW_CNTL_RX:
2964 writel(CR0_FDXRFCEN, &regs->CR0Set);
2965 writel(CR0_FDXTFCEN, &regs->CR0Clr);
2966 break;
2967
2968 case FLOW_CNTL_TX_RX:
2969 writel(CR0_FDXTFCEN, &regs->CR0Set);
2970 writel(CR0_FDXRFCEN, &regs->CR0Set);
2971 break;
2972
2973 case FLOW_CNTL_DISABLE:
2974 writel(CR0_FDXRFCEN, &regs->CR0Clr);
2975 writel(CR0_FDXTFCEN, &regs->CR0Clr);
2976 break;
2977
2978 default:
2979 break;
2980 }
2981
2982}
2983
2984
2985/**
2986 * velocity_ethtool_up - pre hook for ethtool
2987 * @dev: network device
2988 *
2989 * Called before an ethtool operation. We need to make sure the
2990 * chip is out of D3 state before we poke at it.
2991 */
6aa20a22 2992
1da177e4
LT		 2993static int velocity_ethtool_up(struct net_device *dev)
2994{
8ab6f3f7 2995 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 2996 if (!netif_running(dev))
2997 pci_set_power_state(vptr->pdev, PCI_D0);
2998 return 0;
6aa20a22 2999}
1da177e4
LT		 3000
3001/**
3002 * velocity_ethtool_down - post hook for ethtool
3003 * @dev: network device
3004 *
3005 * Called after an ethtool operation. Restore the chip back to D3
3006 * state if it isn't running.
3007 */
6aa20a22 3008
1da177e4
LT		 3009static void velocity_ethtool_down(struct net_device *dev)
3010{
8ab6f3f7 3011 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 3012 if (!netif_running(dev))
3013 pci_set_power_state(vptr->pdev, PCI_D3hot);
3014}
3015
3016static int velocity_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3017{
8ab6f3f7 3018 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 3019 struct mac_regs __iomem * regs = vptr->mac_regs;
3020 u32 status;
3021 status = check_connection_type(vptr->mac_regs);
3022
59b693fb
JC		 3023 cmd->supported = SUPPORTED_TP |
3024 SUPPORTED_Autoneg |
3025 SUPPORTED_10baseT_Half |
3026 SUPPORTED_10baseT_Full |
3027 SUPPORTED_100baseT_Half |
3028 SUPPORTED_100baseT_Full |
3029 SUPPORTED_1000baseT_Half |
3030 SUPPORTED_1000baseT_Full;
3031 if (status & VELOCITY_SPEED_1000)
3032 cmd->speed = SPEED_1000;
3033 else if (status & VELOCITY_SPEED_100)
1da177e4
LT		 3034 cmd->speed = SPEED_100;
3035 else
3036 cmd->speed = SPEED_10;
3037 cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
3038 cmd->port = PORT_TP;
3039 cmd->transceiver = XCVR_INTERNAL;
3040 cmd->phy_address = readb(&regs->MIIADR) & 0x1F;
3041
3042 if (status & VELOCITY_DUPLEX_FULL)
3043 cmd->duplex = DUPLEX_FULL;
3044 else
3045 cmd->duplex = DUPLEX_HALF;
6aa20a22 3046
1da177e4
LT		 3047 return 0;
3048}
3049
3050static int velocity_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
3051{
8ab6f3f7 3052 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 3053 u32 curr_status;
3054 u32 new_status = 0;
3055 int ret = 0;
6aa20a22 3056
1da177e4
LT		 3057 curr_status = check_connection_type(vptr->mac_regs);
3058 curr_status &= (~VELOCITY_LINK_FAIL);
3059
3060 new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0);
3061 new_status |= ((cmd->speed == SPEED_100) ? VELOCITY_SPEED_100 : 0);
3062 new_status |= ((cmd->speed == SPEED_10) ? VELOCITY_SPEED_10 : 0);
3063 new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0);
3064
3065 if ((new_status & VELOCITY_AUTONEG_ENABLE) && (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE)))
3066 ret = -EINVAL;
3067 else
3068 velocity_set_media_mode(vptr, new_status);
3069
3070 return ret;
3071}
3072
3073static u32 velocity_get_link(struct net_device *dev)
3074{
8ab6f3f7 3075 struct velocity_info *vptr = netdev_priv(dev);
1da177e4 3076 struct mac_regs __iomem * regs = vptr->mac_regs;
59b693fb 3077 return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, &regs->PHYSR0) ? 1 : 0;
1da177e4
LT		 3078}
3079
3080static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
3081{
8ab6f3f7 3082 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 3083 strcpy(info->driver, VELOCITY_NAME);
3084 strcpy(info->version, VELOCITY_VERSION);
3085 strcpy(info->bus_info, pci_name(vptr->pdev));
3086}
3087
3088static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3089{
8ab6f3f7 3090 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 3091 wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP;
3092 wol->wolopts |= WAKE_MAGIC;
3093 /*
3094 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3095 wol.wolopts|=WAKE_PHY;
3096 */
3097 if (vptr->wol_opts & VELOCITY_WOL_UCAST)
3098 wol->wolopts |= WAKE_UCAST;
3099 if (vptr->wol_opts & VELOCITY_WOL_ARP)
3100 wol->wolopts |= WAKE_ARP;
3101 memcpy(&wol->sopass, vptr->wol_passwd, 6);
3102}
3103
3104static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
3105{
8ab6f3f7 3106 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 3107
3108 if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP)))
3109 return -EFAULT;
3110 vptr->wol_opts = VELOCITY_WOL_MAGIC;
3111
3112 /*
3113 if (wol.wolopts & WAKE_PHY) {
3114 vptr->wol_opts|=VELOCITY_WOL_PHY;
3115 vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED;
3116 }
3117 */
3118
3119 if (wol->wolopts & WAKE_MAGIC) {
3120 vptr->wol_opts |= VELOCITY_WOL_MAGIC;
3121 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3122 }
3123 if (wol->wolopts & WAKE_UCAST) {
3124 vptr->wol_opts |= VELOCITY_WOL_UCAST;
3125 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3126 }
3127 if (wol->wolopts & WAKE_ARP) {
3128 vptr->wol_opts |= VELOCITY_WOL_ARP;
3129 vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED;
3130 }
3131 memcpy(vptr->wol_passwd, wol->sopass, 6);
3132 return 0;
3133}
3134
3135static u32 velocity_get_msglevel(struct net_device *dev)
3136{
3137 return msglevel;
3138}
3139
3140static void velocity_set_msglevel(struct net_device *dev, u32 value)
3141{
3142 msglevel = value;
3143}
3144
7282d491 3145static const struct ethtool_ops velocity_ethtool_ops = {
1da177e4
LT		 3146 .get_settings = velocity_get_settings,
3147 .set_settings = velocity_set_settings,
3148 .get_drvinfo = velocity_get_drvinfo,
3149 .get_wol = velocity_ethtool_get_wol,
3150 .set_wol = velocity_ethtool_set_wol,
3151 .get_msglevel = velocity_get_msglevel,
3152 .set_msglevel = velocity_set_msglevel,
3153 .get_link = velocity_get_link,
3154 .begin = velocity_ethtool_up,
3155 .complete = velocity_ethtool_down
3156};
3157
3158/**
3159 * velocity_mii_ioctl - MII ioctl handler
3160 * @dev: network device
3161 * @ifr: the ifreq block for the ioctl
3162 * @cmd: the command
3163 *
3164 * Process MII requests made via ioctl from the network layer. These
3165 * are used by tools like kudzu to interrogate the link state of the
3166 * hardware
3167 */
6aa20a22 3168
1da177e4
LT		 3169static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
3170{
8ab6f3f7 3171 struct velocity_info *vptr = netdev_priv(dev);
1da177e4
LT		 3172 struct mac_regs __iomem * regs = vptr->mac_regs;
3173 unsigned long flags;
3174 struct mii_ioctl_data *miidata = if_mii(ifr);
3175 int err;
6aa20a22 3176
1da177e4
LT		 3177 switch (cmd) {
3178 case SIOCGMIIPHY:
3179 miidata->phy_id = readb(&regs->MIIADR) & 0x1f;
3180 break;
3181 case SIOCGMIIREG:
3182 if (!capable(CAP_NET_ADMIN))
3183 return -EPERM;
3184 if(velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0)
3185 return -ETIMEDOUT;
3186 break;
3187 case SIOCSMIIREG:
3188 if (!capable(CAP_NET_ADMIN))
3189 return -EPERM;
3190 spin_lock_irqsave(&vptr->lock, flags);
3191 err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in);
3192 spin_unlock_irqrestore(&vptr->lock, flags);
3193 check_connection_type(vptr->mac_regs);
3194 if(err)
3195 return err;
3196 break;
3197 default:
3198 return -EOPNOTSUPP;
3199 }
3200 return 0;
3201}
3202
3203#ifdef CONFIG_PM
3204
3205/**
3206 * velocity_save_context - save registers
6aa20a22 3207 * @vptr: velocity
1da177e4
LT		 3208 * @context: buffer for stored context
3209 *
3210 * Retrieve the current configuration from the velocity hardware
3211 * and stash it in the context structure, for use by the context
3212 * restore functions. This allows us to save things we need across
3213 * power down states
3214 */
6aa20a22 3215
1da177e4
LT		 3216static void velocity_save_context(struct velocity_info *vptr, struct velocity_context * context)
3217{
3218 struct mac_regs __iomem * regs = vptr->mac_regs;
3219 u16 i;
3220 u8 __iomem *ptr = (u8 __iomem *)regs;
3221
3222 for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4)
3223 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3224
3225 for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4)
3226 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3227
3228 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4)
3229 *((u32 *) (context->mac_reg + i)) = readl(ptr + i);
3230
3231}
3232
3233/**
3234 * velocity_restore_context - restore registers
6aa20a22 3235 * @vptr: velocity
1da177e4
LT		 3236 * @context: buffer for stored context
3237 *
6aa20a22 3238 * Reload the register configuration from the velocity context
1da177e4
LT		 3239 * created by velocity_save_context.
3240 */
6aa20a22 3241
1da177e4
LT		 3242static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context)
3243{
3244 struct mac_regs __iomem * regs = vptr->mac_regs;
3245 int i;
3246 u8 __iomem *ptr = (u8 __iomem *)regs;
3247
3248 for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4) {
3249 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3250 }
3251
3252 /* Just skip cr0 */
3253 for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) {
3254 /* Clear */
3255 writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4);
3256 /* Set */
3257 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3258 }
3259
3260 for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4) {
3261 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3262 }
3263
3264 for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) {
3265 writel(*((u32 *) (context->mac_reg + i)), ptr + i);
3266 }
3267
3268 for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++) {
3269 writeb(*((u8 *) (context->mac_reg + i)), ptr + i);
3270 }
3271
3272}
3273
3274/**
3275 * wol_calc_crc - WOL CRC
3276 * @pattern: data pattern
3277 * @mask_pattern: mask
3278 *
3279 * Compute the wake on lan crc hashes for the packet header
3280 * we are interested in.
3281 */
3282
3283static u16 wol_calc_crc(int size, u8 * pattern, u8 *mask_pattern)
3284{
3285 u16 crc = 0xFFFF;
3286 u8 mask;
3287 int i, j;
3288
3289 for (i = 0; i < size; i++) {
3290 mask = mask_pattern[i];
3291
3292 /* Skip this loop if the mask equals to zero */
3293 if (mask == 0x00)
3294 continue;
3295
3296 for (j = 0; j < 8; j++) {
3297 if ((mask & 0x01) == 0) {
3298 mask >>= 1;
3299 continue;
3300 }
3301 mask >>= 1;
3302 crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1);
3303 }
3304 }
3305 /* Finally, invert the result once to get the correct data */
3306 crc = ~crc;
906d66df 3307 return bitrev32(crc) >> 16;
1da177e4
LT		 3308}
3309
3310/**
3311 * velocity_set_wol - set up for wake on lan
3312 * @vptr: velocity to set WOL status on
3313 *
3314 * Set a card up for wake on lan either by unicast or by
3315 * ARP packet.
3316 *
3317 * FIXME: check static buffer is safe here
3318 */
3319
3320static int velocity_set_wol(struct velocity_info *vptr)
3321{
3322 struct mac_regs __iomem * regs = vptr->mac_regs;
3323 static u8 buf[256];
3324 int i;
3325
3326 static u32 mask_pattern[2][4] = {
3327 {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */
3328 {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */
3329 };
3330
3331 writew(0xFFFF, &regs->WOLCRClr);
3332 writeb(WOLCFG_SAB | WOLCFG_SAM, &regs->WOLCFGSet);
3333 writew(WOLCR_MAGIC_EN, &regs->WOLCRSet);
3334
3335 /*
3336 if (vptr->wol_opts & VELOCITY_WOL_PHY)
3337 writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), &regs->WOLCRSet);
3338 */
3339
3340 if (vptr->wol_opts & VELOCITY_WOL_UCAST) {
3341 writew(WOLCR_UNICAST_EN, &regs->WOLCRSet);
3342 }
3343
3344 if (vptr->wol_opts & VELOCITY_WOL_ARP) {
3345 struct arp_packet *arp = (struct arp_packet *) buf;
3346 u16 crc;
3347 memset(buf, 0, sizeof(struct arp_packet) + 7);
3348
3349 for (i = 0; i < 4; i++)
3350 writel(mask_pattern[0][i], &regs->ByteMask[0][i]);
3351
3352 arp->type = htons(ETH_P_ARP);
3353 arp->ar_op = htons(1);
3354
3355 memcpy(arp->ar_tip, vptr->ip_addr, 4);
3356
3357 crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf,
3358 (u8 *) & mask_pattern[0][0]);
3359
3360 writew(crc, &regs->PatternCRC[0]);
3361 writew(WOLCR_ARP_EN, &regs->WOLCRSet);
3362 }
3363
3364 BYTE_REG_BITS_ON(PWCFG_WOLTYPE, &regs->PWCFGSet);
3365 BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, &regs->PWCFGSet);
3366
3367 writew(0x0FFF, &regs->WOLSRClr);
3368
3369 if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) {
3370 if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201)
3371 MII_REG_BITS_ON(AUXCR_MDPPS, MII_REG_AUXCR, vptr->mac_regs);
3372
3373 MII_REG_BITS_OFF(G1000CR_1000FD | G1000CR_1000, MII_REG_G1000CR, vptr->mac_regs);
3374 }
3375
3376 if (vptr->mii_status & VELOCITY_SPEED_1000)
3377 MII_REG_BITS_ON(BMCR_REAUTO, MII_REG_BMCR, vptr->mac_regs);
3378
3379 BYTE_REG_BITS_ON(CHIPGCR_FCMODE, &regs->CHIPGCR);
3380
3381 {
3382 u8 GCR;
3383 GCR = readb(&regs->CHIPGCR);
3384 GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX;
3385 writeb(GCR, &regs->CHIPGCR);
3386 }
3387
3388 BYTE_REG_BITS_OFF(ISR_PWEI, &regs->ISR);
3389 /* Turn on SWPTAG just before entering power mode */
3390 BYTE_REG_BITS_ON(STICKHW_SWPTAG, &regs->STICKHW);
3391 /* Go to bed ..... */
3392 BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), &regs->STICKHW);
3393
3394 return 0;
3395}
3396
3397static int velocity_suspend(struct pci_dev *pdev, pm_message_t state)
3398{
3399 struct net_device *dev = pci_get_drvdata(pdev);
3400 struct velocity_info *vptr = netdev_priv(dev);
3401 unsigned long flags;
3402
3403 if(!netif_running(vptr->dev))
3404 return 0;
3405
3406 netif_device_detach(vptr->dev);
3407
3408 spin_lock_irqsave(&vptr->lock, flags);
3409 pci_save_state(pdev);
3410#ifdef ETHTOOL_GWOL
3411 if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) {
3412 velocity_get_ip(vptr);
3413 velocity_save_context(vptr, &vptr->context);
3414 velocity_shutdown(vptr);
3415 velocity_set_wol(vptr);
4a51c0d0 3416 pci_enable_wake(pdev, PCI_D3hot, 1);
1da177e4
LT		 3417 pci_set_power_state(pdev, PCI_D3hot);
3418 } else {
3419 velocity_save_context(vptr, &vptr->context);
3420 velocity_shutdown(vptr);
3421 pci_disable_device(pdev);
3422 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3423 }
3424#else
3425 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3426#endif
3427 spin_unlock_irqrestore(&vptr->lock, flags);
3428 return 0;
3429}
3430
3431static int velocity_resume(struct pci_dev *pdev)
3432{
3433 struct net_device *dev = pci_get_drvdata(pdev);
3434 struct velocity_info *vptr = netdev_priv(dev);
3435 unsigned long flags;
3436 int i;
3437
3438 if(!netif_running(vptr->dev))
3439 return 0;
3440
3441 pci_set_power_state(pdev, PCI_D0);
3442 pci_enable_wake(pdev, 0, 0);
3443 pci_restore_state(pdev);
3444
3445 mac_wol_reset(vptr->mac_regs);
3446
3447 spin_lock_irqsave(&vptr->lock, flags);
3448 velocity_restore_context(vptr, &vptr->context);
3449 velocity_init_registers(vptr, VELOCITY_INIT_WOL);
3450 mac_disable_int(vptr->mac_regs);
3451
3452 velocity_tx_srv(vptr, 0);
3453
0fe9f15e
FR		 3454 for (i = 0; i < vptr->tx.numq; i++) {
3455 if (vptr->tx.used[i]) {
1da177e4
LT		 3456 mac_tx_queue_wake(vptr->mac_regs, i);
3457 }
3458 }
3459
3460 mac_enable_int(vptr->mac_regs);
3461 spin_unlock_irqrestore(&vptr->lock, flags);
3462 netif_device_attach(vptr->dev);
3463
3464 return 0;
3465}
3466
ce9f7fe3
RD		 3467#ifdef CONFIG_INET
3468
1da177e4
LT		 3469static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr)
3470{
3471 struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
a337499f
DL		 3472 struct net_device *dev = ifa->ifa_dev->dev;
3473 struct velocity_info *vptr;
3474 unsigned long flags;
1da177e4 3475
c346dca1 3476 if (dev_net(dev) != &init_net)
6133fb1a
DL		 3477 return NOTIFY_DONE;
3478
a337499f
DL		 3479 spin_lock_irqsave(&velocity_dev_list_lock, flags);
3480 list_for_each_entry(vptr, &velocity_dev_list, list) {
3481 if (vptr->dev == dev) {
3482 velocity_get_ip(vptr);
3483 break;
1da177e4 3484 }
1da177e4 3485 }
a337499f
DL		 3486 spin_unlock_irqrestore(&velocity_dev_list_lock, flags);
3487
1da177e4
LT		 3488 return NOTIFY_DONE;
3489}
ce9f7fe3
RD		 3490
3491#endif
1da177e4 3492#endif
Linux kernel - Deliverables
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