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drivers/net: fixed drivers that support netpoll use ndo_start_xmit()
[net-next-2.6.git] / drivers / net / b44.c
CommitLineData
753f4920 1/* b44.c: Broadcom 44xx/47xx Fast Ethernet device driver.
1da177e4
LT		 2 *
3 * Copyright (C) 2002 David S. Miller (davem@redhat.com)
753f4920
MB		 4 * Copyright (C) 2004 Pekka Pietikainen (pp@ee.oulu.fi)
5 * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
6 * Copyright (C) 2006 Felix Fietkau (nbd@openwrt.org)
8056bfaf 7 * Copyright (C) 2006 Broadcom Corporation.
753f4920 8 * Copyright (C) 2007 Michael Buesch <mb@bu3sch.de>
1da177e4
LT		 9 *
10 * Distribute under GPL.
11 */
12
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/moduleparam.h>
16#include <linux/types.h>
17#include <linux/netdevice.h>
18#include <linux/ethtool.h>
19#include <linux/mii.h>
20#include <linux/if_ether.h>
72f4861e 21#include <linux/if_vlan.h>
1da177e4
LT		 22#include <linux/etherdevice.h>
23#include <linux/pci.h>
24#include <linux/delay.h>
25#include <linux/init.h>
89358f90 26#include <linux/dma-mapping.h>
753f4920 27#include <linux/ssb/ssb.h>
1da177e4
LT		 28
29#include <asm/uaccess.h>
30#include <asm/io.h>
31#include <asm/irq.h>
32
753f4920 33
1da177e4
LT		 34#include "b44.h"
35
36#define DRV_MODULE_NAME "b44"
37#define PFX DRV_MODULE_NAME ": "
753f4920 38#define DRV_MODULE_VERSION "2.0"
1da177e4
LT		 39
40#define B44_DEF_MSG_ENABLE \
41 (NETIF_MSG_DRV | \
42 NETIF_MSG_PROBE | \
43 NETIF_MSG_LINK | \
44 NETIF_MSG_TIMER | \
45 NETIF_MSG_IFDOWN | \
46 NETIF_MSG_IFUP | \
47 NETIF_MSG_RX_ERR | \
48 NETIF_MSG_TX_ERR)
49
50/* length of time before we decide the hardware is borked,
51 * and dev->tx_timeout() should be called to fix the problem
52 */
53#define B44_TX_TIMEOUT (5 * HZ)
54
55/* hardware minimum and maximum for a single frame's data payload */
56#define B44_MIN_MTU 60
57#define B44_MAX_MTU 1500
58
59#define B44_RX_RING_SIZE 512
60#define B44_DEF_RX_RING_PENDING 200
61#define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \
62 B44_RX_RING_SIZE)
63#define B44_TX_RING_SIZE 512
64#define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1)
65#define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \
66 B44_TX_RING_SIZE)
1da177e4
LT		 67
68#define TX_RING_GAP(BP) \
69 (B44_TX_RING_SIZE - (BP)->tx_pending)
70#define TX_BUFFS_AVAIL(BP) \
71 (((BP)->tx_cons <= (BP)->tx_prod) ? \
72 (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \
73 (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP))
74#define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1))
75
4ca85795
FF		 76#define RX_PKT_OFFSET (RX_HEADER_LEN + 2)
77#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET)
1da177e4
LT		 78
79/* minimum number of free TX descriptors required to wake up TX process */
80#define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4)
81
725ad800
GZ		 82/* b44 internal pattern match filter info */
83#define B44_PATTERN_BASE 0x400
84#define B44_PATTERN_SIZE 0x80
85#define B44_PMASK_BASE 0x600
86#define B44_PMASK_SIZE 0x10
87#define B44_MAX_PATTERNS 16
88#define B44_ETHIPV6UDP_HLEN 62
89#define B44_ETHIPV4UDP_HLEN 42
90
1da177e4 91static char version[] __devinitdata =
753f4920 92 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION "\n";
1da177e4 93
753f4920
MB		 94MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller");
95MODULE_DESCRIPTION("Broadcom 44xx/47xx 10/100 PCI ethernet driver");
1da177e4
LT		 96MODULE_LICENSE("GPL");
97MODULE_VERSION(DRV_MODULE_VERSION);
98
99static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */
100module_param(b44_debug, int, 0);
101MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value");
102
1da177e4 103
753f4920
MB		 104#ifdef CONFIG_B44_PCI
105static const struct pci_device_id b44_pci_tbl[] = {
106 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401) },
107 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0) },
108 { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1) },
109 { 0 } /* terminate list with empty entry */
110};
1da177e4
LT		 111MODULE_DEVICE_TABLE(pci, b44_pci_tbl);
112
753f4920
MB		 113static struct pci_driver b44_pci_driver = {
114 .name = DRV_MODULE_NAME,
115 .id_table = b44_pci_tbl,
116};
117#endif /* CONFIG_B44_PCI */
118
119static const struct ssb_device_id b44_ssb_tbl[] = {
120 SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET, SSB_ANY_REV),
121 SSB_DEVTABLE_END
122};
123MODULE_DEVICE_TABLE(ssb, b44_ssb_tbl);
124
1da177e4
LT		 125static void b44_halt(struct b44 *);
126static void b44_init_rings(struct b44 *);
5fc7d61a
MC		 127
128#define B44_FULL_RESET 1
129#define B44_FULL_RESET_SKIP_PHY 2
130#define B44_PARTIAL_RESET 3
fedb0eef
MB		 131#define B44_CHIP_RESET_FULL 4
132#define B44_CHIP_RESET_PARTIAL 5
5fc7d61a 133
00e8b3aa 134static void b44_init_hw(struct b44 *, int);
1da177e4 135
9f38c636
JL		 136static int dma_desc_align_mask;
137static int dma_desc_sync_size;
753f4920 138static int instance;
9f38c636 139
3353930d
FR		 140static const char b44_gstrings[][ETH_GSTRING_LEN] = {
141#define _B44(x...) # x,
142B44_STAT_REG_DECLARE
143#undef _B44
144};
145
753f4920
MB		 146static inline void b44_sync_dma_desc_for_device(struct ssb_device *sdev,
147 dma_addr_t dma_base,
148 unsigned long offset,
149 enum dma_data_direction dir)
9f38c636 150{
f225763a
MB		 151 ssb_dma_sync_single_range_for_device(sdev, dma_base,
152 offset & dma_desc_align_mask,
153 dma_desc_sync_size, dir);
9f38c636
JL		 154}
155
753f4920
MB		 156static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev,
157 dma_addr_t dma_base,
158 unsigned long offset,
159 enum dma_data_direction dir)
9f38c636 160{
f225763a
MB		 161 ssb_dma_sync_single_range_for_cpu(sdev, dma_base,
162 offset & dma_desc_align_mask,
163 dma_desc_sync_size, dir);
9f38c636
JL		 164}
165
1da177e4
LT		 166static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
167{
753f4920 168 return ssb_read32(bp->sdev, reg);
1da177e4
LT		 169}
170
10badc21 171static inline void bw32(const struct b44 *bp,
1da177e4
LT		 172 unsigned long reg, unsigned long val)
173{
753f4920 174 ssb_write32(bp->sdev, reg, val);
1da177e4
LT		 175}
176
177static int b44_wait_bit(struct b44 *bp, unsigned long reg,
178 u32 bit, unsigned long timeout, const int clear)
179{
180 unsigned long i;
181
182 for (i = 0; i < timeout; i++) {
183 u32 val = br32(bp, reg);
184
185 if (clear && !(val & bit))
186 break;
187 if (!clear && (val & bit))
188 break;
189 udelay(10);
190 }
191 if (i == timeout) {
192 printk(KERN_ERR PFX "%s: BUG! Timeout waiting for bit %08x of register "
193 "%lx to %s.\n",
194 bp->dev->name,
195 bit, reg,
196 (clear ? "clear" : "set"));
197 return -ENODEV;
198 }
199 return 0;
200}
201
753f4920 202static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index)
1da177e4
LT		 203{
204 u32 val;
205
753f4920
MB		 206 bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ |
207 (index << CAM_CTRL_INDEX_SHIFT)));
1da177e4 208
753f4920 209 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
1da177e4 210
753f4920 211 val = br32(bp, B44_CAM_DATA_LO);
1da177e4 212
753f4920
MB		 213 data[2] = (val >> 24) & 0xFF;
214 data[3] = (val >> 16) & 0xFF;
215 data[4] = (val >> 8) & 0xFF;
216 data[5] = (val >> 0) & 0xFF;
1da177e4 217
753f4920 218 val = br32(bp, B44_CAM_DATA_HI);
1da177e4 219
753f4920
MB		 220 data[0] = (val >> 8) & 0xFF;
221 data[1] = (val >> 0) & 0xFF;
1da177e4
LT		 222}
223
753f4920 224static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
1da177e4
LT		 225{
226 u32 val;
227
228 val = ((u32) data[2]) << 24;
229 val |= ((u32) data[3]) << 16;
230 val |= ((u32) data[4]) << 8;
231 val |= ((u32) data[5]) << 0;
232 bw32(bp, B44_CAM_DATA_LO, val);
10badc21 233 val = (CAM_DATA_HI_VALID |
1da177e4
LT		 234 (((u32) data[0]) << 8) |
235 (((u32) data[1]) << 0));
236 bw32(bp, B44_CAM_DATA_HI, val);
237 bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE |
238 (index << CAM_CTRL_INDEX_SHIFT)));
10badc21 239 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
1da177e4
LT		 240}
241
242static inline void __b44_disable_ints(struct b44 *bp)
243{
244 bw32(bp, B44_IMASK, 0);
245}
246
247static void b44_disable_ints(struct b44 *bp)
248{
249 __b44_disable_ints(bp);
250
251 /* Flush posted writes. */
252 br32(bp, B44_IMASK);
253}
254
255static void b44_enable_ints(struct b44 *bp)
256{
257 bw32(bp, B44_IMASK, bp->imask);
258}
259
753f4920 260static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val)
1da177e4
LT		 261{
262 int err;
263
264 bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
265 bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
266 (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
753f4920 267 (phy_addr << MDIO_DATA_PMD_SHIFT) |
1da177e4
LT		 268 (reg << MDIO_DATA_RA_SHIFT) |
269 (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT)));
270 err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
271 *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA;
272
273 return err;
274}
275
753f4920 276static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val)
1da177e4
LT		 277{
278 bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII);
279 bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START |
280 (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
753f4920 281 (phy_addr << MDIO_DATA_PMD_SHIFT) |
1da177e4
LT		 282 (reg << MDIO_DATA_RA_SHIFT) |
283 (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) |
284 (val & MDIO_DATA_DATA)));
285 return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
286}
287
753f4920
MB		 288static inline int b44_readphy(struct b44 *bp, int reg, u32 *val)
289{
290 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
291 return 0;
292
293 return __b44_readphy(bp, bp->phy_addr, reg, val);
294}
295
296static inline int b44_writephy(struct b44 *bp, int reg, u32 val)
297{
298 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
299 return 0;
300
301 return __b44_writephy(bp, bp->phy_addr, reg, val);
302}
303
1da177e4 304/* miilib interface */
1da177e4
LT		 305static int b44_mii_read(struct net_device *dev, int phy_id, int location)
306{
307 u32 val;
308 struct b44 *bp = netdev_priv(dev);
753f4920 309 int rc = __b44_readphy(bp, phy_id, location, &val);
1da177e4
LT		 310 if (rc)
311 return 0xffffffff;
312 return val;
313}
314
315static void b44_mii_write(struct net_device *dev, int phy_id, int location,
316 int val)
317{
318 struct b44 *bp = netdev_priv(dev);
753f4920 319 __b44_writephy(bp, phy_id, location, val);
1da177e4
LT		 320}
321
322static int b44_phy_reset(struct b44 *bp)
323{
324 u32 val;
325 int err;
326
753f4920
MB		 327 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
328 return 0;
1da177e4
LT		 329 err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
330 if (err)
331 return err;
332 udelay(100);
333 err = b44_readphy(bp, MII_BMCR, &val);
334 if (!err) {
335 if (val & BMCR_RESET) {
336 printk(KERN_ERR PFX "%s: PHY Reset would not complete.\n",
337 bp->dev->name);
338 err = -ENODEV;
339 }
340 }
341
342 return 0;
343}
344
345static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags)
346{
347 u32 val;
348
349 bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE);
350 bp->flags |= pause_flags;
351
352 val = br32(bp, B44_RXCONFIG);
353 if (pause_flags & B44_FLAG_RX_PAUSE)
354 val |= RXCONFIG_FLOW;
355 else
356 val &= ~RXCONFIG_FLOW;
357 bw32(bp, B44_RXCONFIG, val);
358
359 val = br32(bp, B44_MAC_FLOW);
360 if (pause_flags & B44_FLAG_TX_PAUSE)
361 val |= (MAC_FLOW_PAUSE_ENAB |
362 (0xc0 & MAC_FLOW_RX_HI_WATER));
363 else
364 val &= ~MAC_FLOW_PAUSE_ENAB;
365 bw32(bp, B44_MAC_FLOW, val);
366}
367
368static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote)
369{
10badc21 370 u32 pause_enab = 0;
2b474cf5
GZ		 371
372 /* The driver supports only rx pause by default because
10badc21
JG		 373 the b44 mac tx pause mechanism generates excessive
374 pause frames.
2b474cf5
GZ		 375 Use ethtool to turn on b44 tx pause if necessary.
376 */
377 if ((local & ADVERTISE_PAUSE_CAP) &&
10badc21 378 (local & ADVERTISE_PAUSE_ASYM)){
2b474cf5
GZ		 379 if ((remote & LPA_PAUSE_ASYM) &&
380 !(remote & LPA_PAUSE_CAP))
381 pause_enab |= B44_FLAG_RX_PAUSE;
1da177e4
LT		 382 }
383
384 __b44_set_flow_ctrl(bp, pause_enab);
385}
386
753f4920
MB		 387#ifdef SSB_DRIVER_MIPS
388extern char *nvram_get(char *name);
389static void b44_wap54g10_workaround(struct b44 *bp)
390{
391 const char *str;
392 u32 val;
393 int err;
394
395 /*
396 * workaround for bad hardware design in Linksys WAP54G v1.0
397 * see https://dev.openwrt.org/ticket/146
398 * check and reset bit "isolate"
399 */
400 str = nvram_get("boardnum");
401 if (!str)
402 return;
403 if (simple_strtoul(str, NULL, 0) == 2) {
404 err = __b44_readphy(bp, 0, MII_BMCR, &val);
405 if (err)
406 goto error;
407 if (!(val & BMCR_ISOLATE))
408 return;
409 val &= ~BMCR_ISOLATE;
410 err = __b44_writephy(bp, 0, MII_BMCR, val);
411 if (err)
412 goto error;
413 }
414 return;
415error:
416 printk(KERN_WARNING PFX "PHY: cannot reset MII transceiver isolate bit.\n");
417}
418#else
419static inline void b44_wap54g10_workaround(struct b44 *bp)
420{
421}
422#endif
423
1da177e4
LT		 424static int b44_setup_phy(struct b44 *bp)
425{
426 u32 val;
427 int err;
428
753f4920
MB		 429 b44_wap54g10_workaround(bp);
430
431 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
432 return 0;
1da177e4
LT		 433 if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
434 goto out;
435 if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
436 val & MII_ALEDCTRL_ALLMSK)) != 0)
437 goto out;
438 if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0)
439 goto out;
440 if ((err = b44_writephy(bp, B44_MII_TLEDCTRL,
441 val | MII_TLEDCTRL_ENABLE)) != 0)
442 goto out;
443
444 if (!(bp->flags & B44_FLAG_FORCE_LINK)) {
445 u32 adv = ADVERTISE_CSMA;
446
447 if (bp->flags & B44_FLAG_ADV_10HALF)
448 adv |= ADVERTISE_10HALF;
449 if (bp->flags & B44_FLAG_ADV_10FULL)
450 adv |= ADVERTISE_10FULL;
451 if (bp->flags & B44_FLAG_ADV_100HALF)
452 adv |= ADVERTISE_100HALF;
453 if (bp->flags & B44_FLAG_ADV_100FULL)
454 adv |= ADVERTISE_100FULL;
455
456 if (bp->flags & B44_FLAG_PAUSE_AUTO)
457 adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
458
459 if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0)
460 goto out;
461 if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE |
462 BMCR_ANRESTART))) != 0)
463 goto out;
464 } else {
465 u32 bmcr;
466
467 if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0)
468 goto out;
469 bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100);
470 if (bp->flags & B44_FLAG_100_BASE_T)
471 bmcr |= BMCR_SPEED100;
472 if (bp->flags & B44_FLAG_FULL_DUPLEX)
473 bmcr |= BMCR_FULLDPLX;
474 if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0)
475 goto out;
476
477 /* Since we will not be negotiating there is no safe way
478 * to determine if the link partner supports flow control
479 * or not. So just disable it completely in this case.
480 */
481 b44_set_flow_ctrl(bp, 0, 0);
482 }
483
484out:
485 return err;
486}
487
488static void b44_stats_update(struct b44 *bp)
489{
490 unsigned long reg;
491 u32 *val;
492
493 val = &bp->hw_stats.tx_good_octets;
494 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) {
495 *val++ += br32(bp, reg);
496 }
3353930d
FR		 497
498 /* Pad */
499 reg += 8*4UL;
500
1da177e4
LT		 501 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) {
502 *val++ += br32(bp, reg);
503 }
504}
505
506static void b44_link_report(struct b44 *bp)
507{
508 if (!netif_carrier_ok(bp->dev)) {
509 printk(KERN_INFO PFX "%s: Link is down.\n", bp->dev->name);
510 } else {
511 printk(KERN_INFO PFX "%s: Link is up at %d Mbps, %s duplex.\n",
512 bp->dev->name,
513 (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10,
514 (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half");
515
516 printk(KERN_INFO PFX "%s: Flow control is %s for TX and "
517 "%s for RX.\n",
518 bp->dev->name,
519 (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off",
520 (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off");
521 }
522}
523
524static void b44_check_phy(struct b44 *bp)
525{
526 u32 bmsr, aux;
527
753f4920
MB		 528 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) {
529 bp->flags |= B44_FLAG_100_BASE_T;
530 bp->flags |= B44_FLAG_FULL_DUPLEX;
531 if (!netif_carrier_ok(bp->dev)) {
532 u32 val = br32(bp, B44_TX_CTRL);
533 val |= TX_CTRL_DUPLEX;
534 bw32(bp, B44_TX_CTRL, val);
535 netif_carrier_on(bp->dev);
536 b44_link_report(bp);
537 }
538 return;
539 }
540
1da177e4
LT		 541 if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
542 !b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
543 (bmsr != 0xffff)) {
544 if (aux & MII_AUXCTRL_SPEED)
545 bp->flags |= B44_FLAG_100_BASE_T;
546 else
547 bp->flags &= ~B44_FLAG_100_BASE_T;
548 if (aux & MII_AUXCTRL_DUPLEX)
549 bp->flags |= B44_FLAG_FULL_DUPLEX;
550 else
551 bp->flags &= ~B44_FLAG_FULL_DUPLEX;
552
553 if (!netif_carrier_ok(bp->dev) &&
554 (bmsr & BMSR_LSTATUS)) {
555 u32 val = br32(bp, B44_TX_CTRL);
556 u32 local_adv, remote_adv;
557
558 if (bp->flags & B44_FLAG_FULL_DUPLEX)
559 val |= TX_CTRL_DUPLEX;
560 else
561 val &= ~TX_CTRL_DUPLEX;
562 bw32(bp, B44_TX_CTRL, val);
563
564 if (!(bp->flags & B44_FLAG_FORCE_LINK) &&
565 !b44_readphy(bp, MII_ADVERTISE, &local_adv) &&
566 !b44_readphy(bp, MII_LPA, &remote_adv))
567 b44_set_flow_ctrl(bp, local_adv, remote_adv);
568
569 /* Link now up */
570 netif_carrier_on(bp->dev);
571 b44_link_report(bp);
572 } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) {
573 /* Link now down */
574 netif_carrier_off(bp->dev);
575 b44_link_report(bp);
576 }
577
578 if (bmsr & BMSR_RFAULT)
579 printk(KERN_WARNING PFX "%s: Remote fault detected in PHY\n",
580 bp->dev->name);
581 if (bmsr & BMSR_JCD)
582 printk(KERN_WARNING PFX "%s: Jabber detected in PHY\n",
583 bp->dev->name);
584 }
585}
586
587static void b44_timer(unsigned long __opaque)
588{
589 struct b44 *bp = (struct b44 *) __opaque;
590
591 spin_lock_irq(&bp->lock);
592
593 b44_check_phy(bp);
594
595 b44_stats_update(bp);
596
597 spin_unlock_irq(&bp->lock);
598
a72a8179 599 mod_timer(&bp->timer, round_jiffies(jiffies + HZ));
1da177e4
LT		 600}
601
602static void b44_tx(struct b44 *bp)
603{
604 u32 cur, cons;
605
606 cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK;
607 cur /= sizeof(struct dma_desc);
608
609 /* XXX needs updating when NETIF_F_SG is supported */
610 for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) {
611 struct ring_info *rp = &bp->tx_buffers[cons];
612 struct sk_buff *skb = rp->skb;
613
5d9428de 614 BUG_ON(skb == NULL);
1da177e4 615
f225763a
MB		 616 ssb_dma_unmap_single(bp->sdev,
617 rp->mapping,
618 skb->len,
619 DMA_TO_DEVICE);
1da177e4
LT		 620 rp->skb = NULL;
621 dev_kfree_skb_irq(skb);
622 }
623
624 bp->tx_cons = cons;
625 if (netif_queue_stopped(bp->dev) &&
626 TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH)
627 netif_wake_queue(bp->dev);
628
629 bw32(bp, B44_GPTIMER, 0);
630}
631
632/* Works like this. This chip writes a 'struct rx_header" 30 bytes
633 * before the DMA address you give it. So we allocate 30 more bytes
634 * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then
635 * point the chip at 30 bytes past where the rx_header will go.
636 */
637static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
638{
639 struct dma_desc *dp;
640 struct ring_info *src_map, *map;
641 struct rx_header *rh;
642 struct sk_buff *skb;
643 dma_addr_t mapping;
644 int dest_idx;
645 u32 ctrl;
646
647 src_map = NULL;
648 if (src_idx >= 0)
649 src_map = &bp->rx_buffers[src_idx];
650 dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
651 map = &bp->rx_buffers[dest_idx];
bf0dcbd9 652 skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ);
1da177e4
LT		 653 if (skb == NULL)
654 return -ENOMEM;
655
f225763a
MB		 656 mapping = ssb_dma_map_single(bp->sdev, skb->data,
657 RX_PKT_BUF_SZ,
658 DMA_FROM_DEVICE);
1da177e4
LT		 659
660 /* Hardware bug work-around, the chip is unable to do PCI DMA
661 to/from anything above 1GB :-( */
f225763a 662 if (ssb_dma_mapping_error(bp->sdev, mapping) ||
28b76796 663 mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
1da177e4 664 /* Sigh... */
f225763a
MB		 665 if (!ssb_dma_mapping_error(bp->sdev, mapping))
666 ssb_dma_unmap_single(bp->sdev, mapping,
667 RX_PKT_BUF_SZ, DMA_FROM_DEVICE);
1da177e4 668 dev_kfree_skb_any(skb);
bf0dcbd9 669 skb = __netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ, GFP_ATOMIC|GFP_DMA);
1da177e4
LT		 670 if (skb == NULL)
671 return -ENOMEM;
f225763a
MB		 672 mapping = ssb_dma_map_single(bp->sdev, skb->data,
673 RX_PKT_BUF_SZ,
674 DMA_FROM_DEVICE);
675 if (ssb_dma_mapping_error(bp->sdev, mapping) ||
28b76796 676 mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
f225763a
MB		 677 if (!ssb_dma_mapping_error(bp->sdev, mapping))
678 ssb_dma_unmap_single(bp->sdev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
1da177e4
LT		 679 dev_kfree_skb_any(skb);
680 return -ENOMEM;
681 }
a58c891a 682 bp->force_copybreak = 1;
1da177e4
LT		 683 }
684
72f4861e 685 rh = (struct rx_header *) skb->data;
1da177e4 686
1da177e4
LT		 687 rh->len = 0;
688 rh->flags = 0;
689
690 map->skb = skb;
753f4920 691 map->mapping = mapping;
1da177e4
LT		 692
693 if (src_map != NULL)
694 src_map->skb = NULL;
695
4ca85795 696 ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ);
1da177e4
LT		 697 if (dest_idx == (B44_RX_RING_SIZE - 1))
698 ctrl |= DESC_CTRL_EOT;
699
700 dp = &bp->rx_ring[dest_idx];
701 dp->ctrl = cpu_to_le32(ctrl);
4ca85795 702 dp->addr = cpu_to_le32((u32) mapping + bp->dma_offset);
1da177e4 703
9f38c636 704 if (bp->flags & B44_FLAG_RX_RING_HACK)
753f4920 705 b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
5d4d9e8a 706 dest_idx * sizeof(*dp),
753f4920 707 DMA_BIDIRECTIONAL);
9f38c636 708
1da177e4
LT		 709 return RX_PKT_BUF_SZ;
710}
711
712static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked)
713{
714 struct dma_desc *src_desc, *dest_desc;
715 struct ring_info *src_map, *dest_map;
716 struct rx_header *rh;
717 int dest_idx;
a7bed27d 718 __le32 ctrl;
1da177e4
LT		 719
720 dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1);
721 dest_desc = &bp->rx_ring[dest_idx];
722 dest_map = &bp->rx_buffers[dest_idx];
723 src_desc = &bp->rx_ring[src_idx];
724 src_map = &bp->rx_buffers[src_idx];
725
726 dest_map->skb = src_map->skb;
727 rh = (struct rx_header *) src_map->skb->data;
728 rh->len = 0;
729 rh->flags = 0;
753f4920 730 dest_map->mapping = src_map->mapping;
1da177e4 731
9f38c636 732 if (bp->flags & B44_FLAG_RX_RING_HACK)
753f4920 733 b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma,
5d4d9e8a 734 src_idx * sizeof(*src_desc),
753f4920 735 DMA_BIDIRECTIONAL);
9f38c636 736
1da177e4
LT		 737 ctrl = src_desc->ctrl;
738 if (dest_idx == (B44_RX_RING_SIZE - 1))
739 ctrl |= cpu_to_le32(DESC_CTRL_EOT);
740 else
741 ctrl &= cpu_to_le32(~DESC_CTRL_EOT);
742
743 dest_desc->ctrl = ctrl;
744 dest_desc->addr = src_desc->addr;
9f38c636 745
1da177e4
LT		 746 src_map->skb = NULL;
747
9f38c636 748 if (bp->flags & B44_FLAG_RX_RING_HACK)
753f4920 749 b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
5d4d9e8a 750 dest_idx * sizeof(*dest_desc),
753f4920 751 DMA_BIDIRECTIONAL);
9f38c636 752
37efa239 753 ssb_dma_sync_single_for_device(bp->sdev, dest_map->mapping,
f225763a
MB		 754 RX_PKT_BUF_SZ,
755 DMA_FROM_DEVICE);
1da177e4
LT		 756}
757
758static int b44_rx(struct b44 *bp, int budget)
759{
760 int received;
761 u32 cons, prod;
762
763 received = 0;
764 prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK;
765 prod /= sizeof(struct dma_desc);
766 cons = bp->rx_cons;
767
768 while (cons != prod && budget > 0) {
769 struct ring_info *rp = &bp->rx_buffers[cons];
770 struct sk_buff *skb = rp->skb;
753f4920 771 dma_addr_t map = rp->mapping;
1da177e4
LT		 772 struct rx_header *rh;
773 u16 len;
774
f225763a 775 ssb_dma_sync_single_for_cpu(bp->sdev, map,
1da177e4 776 RX_PKT_BUF_SZ,
753f4920 777 DMA_FROM_DEVICE);
1da177e4 778 rh = (struct rx_header *) skb->data;
a7bed27d 779 len = le16_to_cpu(rh->len);
72f4861e 780 if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
1da177e4
LT		 781 (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) {
782 drop_it:
783 b44_recycle_rx(bp, cons, bp->rx_prod);
784 drop_it_no_recycle:
553e2335 785 bp->dev->stats.rx_dropped++;
1da177e4
LT		 786 goto next_pkt;
787 }
788
789 if (len == 0) {
790 int i = 0;
791
792 do {
793 udelay(2);
794 barrier();
a7bed27d 795 len = le16_to_cpu(rh->len);
1da177e4
LT		 796 } while (len == 0 && i++ < 5);
797 if (len == 0)
798 goto drop_it;
799 }
800
801 /* Omit CRC. */
802 len -= 4;
803
a58c891a 804 if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) {
1da177e4
LT		 805 int skb_size;
806 skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod);
807 if (skb_size < 0)
808 goto drop_it;
f225763a
MB		 809 ssb_dma_unmap_single(bp->sdev, map,
810 skb_size, DMA_FROM_DEVICE);
1da177e4 811 /* Leave out rx_header */
4ca85795
FF		 812 skb_put(skb, len + RX_PKT_OFFSET);
813 skb_pull(skb, RX_PKT_OFFSET);
1da177e4
LT		 814 } else {
815 struct sk_buff *copy_skb;
816
817 b44_recycle_rx(bp, cons, bp->rx_prod);
818 copy_skb = dev_alloc_skb(len + 2);
819 if (copy_skb == NULL)
820 goto drop_it_no_recycle;
821
1da177e4
LT		 822 skb_reserve(copy_skb, 2);
823 skb_put(copy_skb, len);
824 /* DMA sync done above, copy just the actual packet */
72f4861e 825 skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET,
d626f62b 826 copy_skb->data, len);
1da177e4
LT		 827 skb = copy_skb;
828 }
829 skb->ip_summed = CHECKSUM_NONE;
830 skb->protocol = eth_type_trans(skb, bp->dev);
831 netif_receive_skb(skb);
1da177e4
LT		 832 received++;
833 budget--;
834 next_pkt:
835 bp->rx_prod = (bp->rx_prod + 1) &
836 (B44_RX_RING_SIZE - 1);
837 cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
838 }
839
840 bp->rx_cons = cons;
841 bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
842
843 return received;
844}
845
bea3348e 846static int b44_poll(struct napi_struct *napi, int budget)
1da177e4 847{
bea3348e 848 struct b44 *bp = container_of(napi, struct b44, napi);
bea3348e 849 int work_done;
1da177e4
LT		 850
851 spin_lock_irq(&bp->lock);
852
853 if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
854 /* spin_lock(&bp->tx_lock); */
855 b44_tx(bp);
856 /* spin_unlock(&bp->tx_lock); */
857 }
858 spin_unlock_irq(&bp->lock);
859
bea3348e
SH		 860 work_done = 0;
861 if (bp->istat & ISTAT_RX)
862 work_done += b44_rx(bp, budget);
1da177e4
LT		 863
864 if (bp->istat & ISTAT_ERRORS) {
d15e9c4d
FR		 865 unsigned long flags;
866
867 spin_lock_irqsave(&bp->lock, flags);
1da177e4
LT		 868 b44_halt(bp);
869 b44_init_rings(bp);
5fc7d61a 870 b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
1da177e4 871 netif_wake_queue(bp->dev);
d15e9c4d 872 spin_unlock_irqrestore(&bp->lock, flags);
bea3348e 873 work_done = 0;
1da177e4
LT		 874 }
875
bea3348e 876 if (work_done < budget) {
288379f0 877 napi_complete(napi);
1da177e4
LT		 878 b44_enable_ints(bp);
879 }
880
bea3348e 881 return work_done;
1da177e4
LT		 882}
883
7d12e780 884static irqreturn_t b44_interrupt(int irq, void *dev_id)
1da177e4
LT		 885{
886 struct net_device *dev = dev_id;
887 struct b44 *bp = netdev_priv(dev);
1da177e4
LT		 888 u32 istat, imask;
889 int handled = 0;
890
65b984f2 891 spin_lock(&bp->lock);
1da177e4
LT		 892
893 istat = br32(bp, B44_ISTAT);
894 imask = br32(bp, B44_IMASK);
895
e78181fe
JB		 896 /* The interrupt mask register controls which interrupt bits
897 * will actually raise an interrupt to the CPU when set by hw/firmware,
898 * but doesn't mask off the bits.
1da177e4
LT		 899 */
900 istat &= imask;
901 if (istat) {
902 handled = 1;
ba5eec9c
FR		 903
904 if (unlikely(!netif_running(dev))) {
905 printk(KERN_INFO "%s: late interrupt.\n", dev->name);
906 goto irq_ack;
907 }
908
288379f0 909 if (napi_schedule_prep(&bp->napi)) {
1da177e4
LT		 910 /* NOTE: These writes are posted by the readback of
911 * the ISTAT register below.
912 */
913 bp->istat = istat;
914 __b44_disable_ints(bp);
288379f0 915 __napi_schedule(&bp->napi);
1da177e4
LT		 916 } else {
917 printk(KERN_ERR PFX "%s: Error, poll already scheduled\n",
918 dev->name);
919 }
920
ba5eec9c 921irq_ack:
1da177e4
LT		 922 bw32(bp, B44_ISTAT, istat);
923 br32(bp, B44_ISTAT);
924 }
65b984f2 925 spin_unlock(&bp->lock);
1da177e4
LT		 926 return IRQ_RETVAL(handled);
927}
928
929static void b44_tx_timeout(struct net_device *dev)
930{
931 struct b44 *bp = netdev_priv(dev);
932
933 printk(KERN_ERR PFX "%s: transmit timed out, resetting\n",
934 dev->name);
935
936 spin_lock_irq(&bp->lock);
937
938 b44_halt(bp);
939 b44_init_rings(bp);
5fc7d61a 940 b44_init_hw(bp, B44_FULL_RESET);
1da177e4
LT		 941
942 spin_unlock_irq(&bp->lock);
943
944 b44_enable_ints(bp);
945
946 netif_wake_queue(dev);
947}
948
949static int b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
950{
951 struct b44 *bp = netdev_priv(dev);
c7193693 952 int rc = NETDEV_TX_OK;
1da177e4
LT		 953 dma_addr_t mapping;
954 u32 len, entry, ctrl;
22580f89 955 unsigned long flags;
1da177e4
LT		 956
957 len = skb->len;
22580f89 958 spin_lock_irqsave(&bp->lock, flags);
1da177e4
LT		 959
960 /* This is a hard error, log it. */
961 if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
962 netif_stop_queue(dev);
1da177e4
LT		 963 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
964 dev->name);
c7193693 965 goto err_out;
1da177e4
LT		 966 }
967
f225763a 968 mapping = ssb_dma_map_single(bp->sdev, skb->data, len, DMA_TO_DEVICE);
28b76796 969 if (ssb_dma_mapping_error(bp->sdev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
f65a7177
SH		 970 struct sk_buff *bounce_skb;
971
1da177e4 972 /* Chip can't handle DMA to/from >1GB, use bounce buffer */
f225763a
MB		 973 if (!ssb_dma_mapping_error(bp->sdev, mapping))
974 ssb_dma_unmap_single(bp->sdev, mapping, len,
975 DMA_TO_DEVICE);
1da177e4 976
9034f77b 977 bounce_skb = __netdev_alloc_skb(dev, len, GFP_ATOMIC | GFP_DMA);
1da177e4 978 if (!bounce_skb)
c7193693 979 goto err_out;
1da177e4 980
f225763a
MB		 981 mapping = ssb_dma_map_single(bp->sdev, bounce_skb->data,
982 len, DMA_TO_DEVICE);
28b76796 983 if (ssb_dma_mapping_error(bp->sdev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
f225763a
MB		 984 if (!ssb_dma_mapping_error(bp->sdev, mapping))
985 ssb_dma_unmap_single(bp->sdev, mapping,
986 len, DMA_TO_DEVICE);
1da177e4 987 dev_kfree_skb_any(bounce_skb);
c7193693 988 goto err_out;
1da177e4
LT		 989 }
990
f65a7177 991 skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
1da177e4
LT		 992 dev_kfree_skb_any(skb);
993 skb = bounce_skb;
994 }
995
996 entry = bp->tx_prod;
997 bp->tx_buffers[entry].skb = skb;
753f4920 998 bp->tx_buffers[entry].mapping = mapping;
1da177e4
LT		 999
1000 ctrl = (len & DESC_CTRL_LEN);
1001 ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
1002 if (entry == (B44_TX_RING_SIZE - 1))
1003 ctrl |= DESC_CTRL_EOT;
1004
1005 bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
1006 bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
1007
9f38c636 1008 if (bp->flags & B44_FLAG_TX_RING_HACK)
753f4920
MB		 1009 b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma,
1010 entry * sizeof(bp->tx_ring[0]),
1011 DMA_TO_DEVICE);
9f38c636 1012
1da177e4
LT		 1013 entry = NEXT_TX(entry);
1014
1015 bp->tx_prod = entry;
1016
1017 wmb();
1018
1019 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1020 if (bp->flags & B44_FLAG_BUGGY_TXPTR)
1021 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1022 if (bp->flags & B44_FLAG_REORDER_BUG)
1023 br32(bp, B44_DMATX_PTR);
1024
1025 if (TX_BUFFS_AVAIL(bp) < 1)
1026 netif_stop_queue(dev);
1027
c7193693
FR		 1028 dev->trans_start = jiffies;
1029
1030out_unlock:
22580f89 1031 spin_unlock_irqrestore(&bp->lock, flags);
1da177e4 1032
c7193693 1033 return rc;
1da177e4 1034
c7193693
FR		 1035err_out:
1036 rc = NETDEV_TX_BUSY;
1037 goto out_unlock;
1da177e4
LT		 1038}
1039
1040static int b44_change_mtu(struct net_device *dev, int new_mtu)
1041{
1042 struct b44 *bp = netdev_priv(dev);
1043
1044 if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU)
1045 return -EINVAL;
1046
1047 if (!netif_running(dev)) {
1048 /* We'll just catch it later when the
1049 * device is up'd.
1050 */
1051 dev->mtu = new_mtu;
1052 return 0;
1053 }
1054
1055 spin_lock_irq(&bp->lock);
1056 b44_halt(bp);
1057 dev->mtu = new_mtu;
1058 b44_init_rings(bp);
5fc7d61a 1059 b44_init_hw(bp, B44_FULL_RESET);
1da177e4
LT		 1060 spin_unlock_irq(&bp->lock);
1061
1062 b44_enable_ints(bp);
10badc21 1063
1da177e4
LT		 1064 return 0;
1065}
1066
1067/* Free up pending packets in all rx/tx rings.
1068 *
1069 * The chip has been shut down and the driver detached from
1070 * the networking, so no interrupts or new tx packets will
1071 * end up in the driver. bp->lock is not held and we are not
1072 * in an interrupt context and thus may sleep.
1073 */
1074static void b44_free_rings(struct b44 *bp)
1075{
1076 struct ring_info *rp;
1077 int i;
1078
1079 for (i = 0; i < B44_RX_RING_SIZE; i++) {
1080 rp = &bp->rx_buffers[i];
1081
1082 if (rp->skb == NULL)
1083 continue;
f225763a
MB		 1084 ssb_dma_unmap_single(bp->sdev, rp->mapping, RX_PKT_BUF_SZ,
1085 DMA_FROM_DEVICE);
1da177e4
LT		 1086 dev_kfree_skb_any(rp->skb);
1087 rp->skb = NULL;
1088 }
1089
1090 /* XXX needs changes once NETIF_F_SG is set... */
1091 for (i = 0; i < B44_TX_RING_SIZE; i++) {
1092 rp = &bp->tx_buffers[i];
1093
1094 if (rp->skb == NULL)
1095 continue;
f225763a
MB		 1096 ssb_dma_unmap_single(bp->sdev, rp->mapping, rp->skb->len,
1097 DMA_TO_DEVICE);
1da177e4
LT		 1098 dev_kfree_skb_any(rp->skb);
1099 rp->skb = NULL;
1100 }
1101}
1102
1103/* Initialize tx/rx rings for packet processing.
1104 *
1105 * The chip has been shut down and the driver detached from
1106 * the networking, so no interrupts or new tx packets will
874a6214 1107 * end up in the driver.
1da177e4
LT		 1108 */
1109static void b44_init_rings(struct b44 *bp)
1110{
1111 int i;
1112
1113 b44_free_rings(bp);
1114
1115 memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
1116 memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
1117
9f38c636 1118 if (bp->flags & B44_FLAG_RX_RING_HACK)
f225763a
MB		 1119 ssb_dma_sync_single_for_device(bp->sdev, bp->rx_ring_dma,
1120 DMA_TABLE_BYTES,
1121 DMA_BIDIRECTIONAL);
9f38c636
JL		 1122
1123 if (bp->flags & B44_FLAG_TX_RING_HACK)
f225763a
MB		 1124 ssb_dma_sync_single_for_device(bp->sdev, bp->tx_ring_dma,
1125 DMA_TABLE_BYTES,
1126 DMA_TO_DEVICE);
9f38c636 1127
1da177e4
LT		 1128 for (i = 0; i < bp->rx_pending; i++) {
1129 if (b44_alloc_rx_skb(bp, -1, i) < 0)
1130 break;
1131 }
1132}
1133
1134/*
1135 * Must not be invoked with interrupt sources disabled and
1136 * the hardware shutdown down.
1137 */
1138static void b44_free_consistent(struct b44 *bp)
1139{
b4558ea9
JJ		 1140 kfree(bp->rx_buffers);
1141 bp->rx_buffers = NULL;
1142 kfree(bp->tx_buffers);
1143 bp->tx_buffers = NULL;
1da177e4 1144 if (bp->rx_ring) {
9f38c636 1145 if (bp->flags & B44_FLAG_RX_RING_HACK) {
f225763a
MB		 1146 ssb_dma_unmap_single(bp->sdev, bp->rx_ring_dma,
1147 DMA_TABLE_BYTES,
1148 DMA_BIDIRECTIONAL);
9f38c636
JL		 1149 kfree(bp->rx_ring);
1150 } else
f225763a
MB		 1151 ssb_dma_free_consistent(bp->sdev, DMA_TABLE_BYTES,
1152 bp->rx_ring, bp->rx_ring_dma,
1153 GFP_KERNEL);
1da177e4 1154 bp->rx_ring = NULL;
9f38c636 1155 bp->flags &= ~B44_FLAG_RX_RING_HACK;
1da177e4
LT		 1156 }
1157 if (bp->tx_ring) {
9f38c636 1158 if (bp->flags & B44_FLAG_TX_RING_HACK) {
f225763a
MB		 1159 ssb_dma_unmap_single(bp->sdev, bp->tx_ring_dma,
1160 DMA_TABLE_BYTES,
1161 DMA_TO_DEVICE);
9f38c636
JL		 1162 kfree(bp->tx_ring);
1163 } else
f225763a
MB		 1164 ssb_dma_free_consistent(bp->sdev, DMA_TABLE_BYTES,
1165 bp->tx_ring, bp->tx_ring_dma,
1166 GFP_KERNEL);
1da177e4 1167 bp->tx_ring = NULL;
9f38c636 1168 bp->flags &= ~B44_FLAG_TX_RING_HACK;
1da177e4
LT		 1169 }
1170}
1171
1172/*
1173 * Must not be invoked with interrupt sources disabled and
1174 * the hardware shutdown down. Can sleep.
1175 */
753f4920 1176static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp)
1da177e4
LT		 1177{
1178 int size;
1179
1180 size = B44_RX_RING_SIZE * sizeof(struct ring_info);
753f4920 1181 bp->rx_buffers = kzalloc(size, gfp);
1da177e4
LT		 1182 if (!bp->rx_buffers)
1183 goto out_err;
1da177e4
LT		 1184
1185 size = B44_TX_RING_SIZE * sizeof(struct ring_info);
753f4920 1186 bp->tx_buffers = kzalloc(size, gfp);
1da177e4
LT		 1187 if (!bp->tx_buffers)
1188 goto out_err;
1da177e4
LT		 1189
1190 size = DMA_TABLE_BYTES;
f225763a 1191 bp->rx_ring = ssb_dma_alloc_consistent(bp->sdev, size, &bp->rx_ring_dma, gfp);
9f38c636
JL		 1192 if (!bp->rx_ring) {
1193 /* Allocation may have failed due to pci_alloc_consistent
1194 insisting on use of GFP_DMA, which is more restrictive
1195 than necessary... */
1196 struct dma_desc *rx_ring;
1197 dma_addr_t rx_ring_dma;
1198
753f4920 1199 rx_ring = kzalloc(size, gfp);
874a6214 1200 if (!rx_ring)
9f38c636
JL		 1201 goto out_err;
1202
f225763a
MB		 1203 rx_ring_dma = ssb_dma_map_single(bp->sdev, rx_ring,
1204 DMA_TABLE_BYTES,
1205 DMA_BIDIRECTIONAL);
9f38c636 1206
f225763a 1207 if (ssb_dma_mapping_error(bp->sdev, rx_ring_dma) ||
28b76796 1208 rx_ring_dma + size > DMA_BIT_MASK(30)) {
9f38c636
JL		 1209 kfree(rx_ring);
1210 goto out_err;
1211 }
1212
1213 bp->rx_ring = rx_ring;
1214 bp->rx_ring_dma = rx_ring_dma;
1215 bp->flags |= B44_FLAG_RX_RING_HACK;
1216 }
1da177e4 1217
f225763a 1218 bp->tx_ring = ssb_dma_alloc_consistent(bp->sdev, size, &bp->tx_ring_dma, gfp);
9f38c636 1219 if (!bp->tx_ring) {
f225763a 1220 /* Allocation may have failed due to ssb_dma_alloc_consistent
9f38c636
JL		 1221 insisting on use of GFP_DMA, which is more restrictive
1222 than necessary... */
1223 struct dma_desc *tx_ring;
1224 dma_addr_t tx_ring_dma;
1225
753f4920 1226 tx_ring = kzalloc(size, gfp);
874a6214 1227 if (!tx_ring)
9f38c636
JL		 1228 goto out_err;
1229
f225763a 1230 tx_ring_dma = ssb_dma_map_single(bp->sdev, tx_ring,
753f4920
MB		 1231 DMA_TABLE_BYTES,
1232 DMA_TO_DEVICE);
9f38c636 1233
f225763a 1234 if (ssb_dma_mapping_error(bp->sdev, tx_ring_dma) ||
28b76796 1235 tx_ring_dma + size > DMA_BIT_MASK(30)) {
9f38c636
JL		 1236 kfree(tx_ring);
1237 goto out_err;
1238 }
1239
1240 bp->tx_ring = tx_ring;
1241 bp->tx_ring_dma = tx_ring_dma;
1242 bp->flags |= B44_FLAG_TX_RING_HACK;
1243 }
1da177e4
LT		 1244
1245 return 0;
1246
1247out_err:
1248 b44_free_consistent(bp);
1249 return -ENOMEM;
1250}
1251
1252/* bp->lock is held. */
1253static void b44_clear_stats(struct b44 *bp)
1254{
1255 unsigned long reg;
1256
1257 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
1258 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL)
1259 br32(bp, reg);
1260 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL)
1261 br32(bp, reg);
1262}
1263
1264/* bp->lock is held. */
fedb0eef 1265static void b44_chip_reset(struct b44 *bp, int reset_kind)
1da177e4 1266{
753f4920 1267 struct ssb_device *sdev = bp->sdev;
f8af11af 1268 bool was_enabled;
753f4920 1269
f8af11af
MB		 1270 was_enabled = ssb_device_is_enabled(bp->sdev);
1271
1272 ssb_device_enable(bp->sdev, 0);
1273 ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev);
1274
1275 if (was_enabled) {
1da177e4
LT		 1276 bw32(bp, B44_RCV_LAZY, 0);
1277 bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
40ee8c76 1278 b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1);
1da177e4
LT		 1279 bw32(bp, B44_DMATX_CTRL, 0);
1280 bp->tx_prod = bp->tx_cons = 0;
1281 if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
1282 b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
1283 100, 0);
1284 }
1285 bw32(bp, B44_DMARX_CTRL, 0);
1286 bp->rx_prod = bp->rx_cons = 0;
f8af11af 1287 }
1da177e4
LT		 1288
1289 b44_clear_stats(bp);
1290
fedb0eef
MB		 1291 /*
1292 * Don't enable PHY if we are doing a partial reset
1293 * we are probably going to power down
1294 */
1295 if (reset_kind == B44_CHIP_RESET_PARTIAL)
1296 return;
1297
753f4920
MB		 1298 switch (sdev->bus->bustype) {
1299 case SSB_BUSTYPE_SSB:
1300 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1301 (((ssb_clockspeed(sdev->bus) + (B44_MDC_RATIO / 2)) / B44_MDC_RATIO)
1302 & MDIO_CTRL_MAXF_MASK)));
1303 break;
1304 case SSB_BUSTYPE_PCI:
1305 case SSB_BUSTYPE_PCMCIA:
1306 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1307 (0x0d & MDIO_CTRL_MAXF_MASK)));
1308 break;
1309 }
1310
1da177e4
LT		 1311 br32(bp, B44_MDIO_CTRL);
1312
1313 if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
1314 bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
1315 br32(bp, B44_ENET_CTRL);
1316 bp->flags &= ~B44_FLAG_INTERNAL_PHY;
1317 } else {
1318 u32 val = br32(bp, B44_DEVCTRL);
1319
1320 if (val & DEVCTRL_EPR) {
1321 bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
1322 br32(bp, B44_DEVCTRL);
1323 udelay(100);
1324 }
1325 bp->flags |= B44_FLAG_INTERNAL_PHY;
1326 }
1327}
1328
1329/* bp->lock is held. */
1330static void b44_halt(struct b44 *bp)
1331{
1332 b44_disable_ints(bp);
fedb0eef
MB		 1333 /* reset PHY */
1334 b44_phy_reset(bp);
1335 /* power down PHY */
1336 printk(KERN_INFO PFX "%s: powering down PHY\n", bp->dev->name);
1337 bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
1338 /* now reset the chip, but without enabling the MAC&PHY
1339 * part of it. This has to be done _after_ we shut down the PHY */
1340 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
1da177e4
LT		 1341}
1342
1343/* bp->lock is held. */
1344static void __b44_set_mac_addr(struct b44 *bp)
1345{
1346 bw32(bp, B44_CAM_CTRL, 0);
1347 if (!(bp->dev->flags & IFF_PROMISC)) {
1348 u32 val;
1349
1350 __b44_cam_write(bp, bp->dev->dev_addr, 0);
1351 val = br32(bp, B44_CAM_CTRL);
1352 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1353 }
1354}
1355
1356static int b44_set_mac_addr(struct net_device *dev, void *p)
1357{
1358 struct b44 *bp = netdev_priv(dev);
1359 struct sockaddr *addr = p;
753f4920 1360 u32 val;
1da177e4
LT		 1361
1362 if (netif_running(dev))
1363 return -EBUSY;
1364
391fc09a
GZ		 1365 if (!is_valid_ether_addr(addr->sa_data))
1366 return -EINVAL;
1367
1da177e4
LT		 1368 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1369
1370 spin_lock_irq(&bp->lock);
753f4920
MB		 1371
1372 val = br32(bp, B44_RXCONFIG);
1373 if (!(val & RXCONFIG_CAM_ABSENT))
1374 __b44_set_mac_addr(bp);
1375
1da177e4
LT		 1376 spin_unlock_irq(&bp->lock);
1377
1378 return 0;
1379}
1380
1381/* Called at device open time to get the chip ready for
1382 * packet processing. Invoked with bp->lock held.
1383 */
1384static void __b44_set_rx_mode(struct net_device *);
5fc7d61a 1385static void b44_init_hw(struct b44 *bp, int reset_kind)
1da177e4
LT		 1386{
1387 u32 val;
1388
fedb0eef 1389 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
5fc7d61a 1390 if (reset_kind == B44_FULL_RESET) {
00e8b3aa
GZ		 1391 b44_phy_reset(bp);
1392 b44_setup_phy(bp);
1393 }
1da177e4
LT		 1394
1395 /* Enable CRC32, set proper LED modes and power on PHY */
1396 bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
1397 bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
1398
1399 /* This sets the MAC address too. */
1400 __b44_set_rx_mode(bp->dev);
1401
1402 /* MTU + eth header + possible VLAN tag + struct rx_header */
1403 bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1404 bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1405
1406 bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
5fc7d61a
MC		 1407 if (reset_kind == B44_PARTIAL_RESET) {
1408 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
72f4861e 1409 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
5fc7d61a 1410 } else {
00e8b3aa
GZ		 1411 bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
1412 bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
1413 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
72f4861e 1414 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
00e8b3aa 1415 bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
1da177e4 1416
00e8b3aa
GZ		 1417 bw32(bp, B44_DMARX_PTR, bp->rx_pending);
1418 bp->rx_prod = bp->rx_pending;
1da177e4 1419
00e8b3aa 1420 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
00e8b3aa 1421 }
1da177e4
LT		 1422
1423 val = br32(bp, B44_ENET_CTRL);
1424 bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
1425}
1426
1427static int b44_open(struct net_device *dev)
1428{
1429 struct b44 *bp = netdev_priv(dev);
1430 int err;
1431
753f4920 1432 err = b44_alloc_consistent(bp, GFP_KERNEL);
1da177e4 1433 if (err)
6c2f4267 1434 goto out;
1da177e4 1435
bea3348e
SH		 1436 napi_enable(&bp->napi);
1437
1da177e4 1438 b44_init_rings(bp);
5fc7d61a 1439 b44_init_hw(bp, B44_FULL_RESET);
1da177e4 1440
e254e9bf
JL		 1441 b44_check_phy(bp);
1442
1fb9df5d 1443 err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
6c2f4267 1444 if (unlikely(err < 0)) {
bea3348e 1445 napi_disable(&bp->napi);
fedb0eef 1446 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
6c2f4267
FR		 1447 b44_free_rings(bp);
1448 b44_free_consistent(bp);
1449 goto out;
1450 }
1da177e4
LT		 1451
1452 init_timer(&bp->timer);
1453 bp->timer.expires = jiffies + HZ;
1454 bp->timer.data = (unsigned long) bp;
1455 bp->timer.function = b44_timer;
1456 add_timer(&bp->timer);
1457
1458 b44_enable_ints(bp);
d9e2d185 1459 netif_start_queue(dev);
6c2f4267 1460out:
1da177e4
LT		 1461 return err;
1462}
1463
1da177e4
LT		 1464#ifdef CONFIG_NET_POLL_CONTROLLER
1465/*
1466 * Polling receive - used by netconsole and other diagnostic tools
1467 * to allow network i/o with interrupts disabled.
1468 */
1469static void b44_poll_controller(struct net_device *dev)
1470{
1471 disable_irq(dev->irq);
7d12e780 1472 b44_interrupt(dev->irq, dev);
1da177e4
LT		 1473 enable_irq(dev->irq);
1474}
1475#endif
1476
725ad800
GZ		 1477static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset)
1478{
1479 u32 i;
1480 u32 *pattern = (u32 *) pp;
1481
1482 for (i = 0; i < bytes; i += sizeof(u32)) {
1483 bw32(bp, B44_FILT_ADDR, table_offset + i);
1484 bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]);
1485 }
1486}
1487
1488static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset)
1489{
1490 int magicsync = 6;
1491 int k, j, len = offset;
1492 int ethaddr_bytes = ETH_ALEN;
1493
1494 memset(ppattern + offset, 0xff, magicsync);
1495 for (j = 0; j < magicsync; j++)
1496 set_bit(len++, (unsigned long *) pmask);
1497
1498 for (j = 0; j < B44_MAX_PATTERNS; j++) {
1499 if ((B44_PATTERN_SIZE - len) >= ETH_ALEN)
1500 ethaddr_bytes = ETH_ALEN;
1501 else
1502 ethaddr_bytes = B44_PATTERN_SIZE - len;
1503 if (ethaddr_bytes <=0)
1504 break;
1505 for (k = 0; k< ethaddr_bytes; k++) {
1506 ppattern[offset + magicsync +
1507 (j * ETH_ALEN) + k] = macaddr[k];
1508 len++;
1509 set_bit(len, (unsigned long *) pmask);
1510 }
1511 }
1512 return len - 1;
1513}
1514
1515/* Setup magic packet patterns in the b44 WOL
1516 * pattern matching filter.
1517 */
1518static void b44_setup_pseudo_magicp(struct b44 *bp)
1519{
1520
1521 u32 val;
1522 int plen0, plen1, plen2;
1523 u8 *pwol_pattern;
1524 u8 pwol_mask[B44_PMASK_SIZE];
1525
dd00cc48 1526 pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
725ad800
GZ		 1527 if (!pwol_pattern) {
1528 printk(KERN_ERR PFX "Memory not available for WOL\n");
1529 return;
1530 }
1531
1532 /* Ipv4 magic packet pattern - pattern 0.*/
725ad800
GZ		 1533 memset(pwol_mask, 0, B44_PMASK_SIZE);
1534 plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1535 B44_ETHIPV4UDP_HLEN);
1536
1537 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE);
1538 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE);
1539
1540 /* Raw ethernet II magic packet pattern - pattern 1 */
1541 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1542 memset(pwol_mask, 0, B44_PMASK_SIZE);
1543 plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1544 ETH_HLEN);
1545
1546 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1547 B44_PATTERN_BASE + B44_PATTERN_SIZE);
1548 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1549 B44_PMASK_BASE + B44_PMASK_SIZE);
1550
1551 /* Ipv6 magic packet pattern - pattern 2 */
1552 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1553 memset(pwol_mask, 0, B44_PMASK_SIZE);
1554 plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1555 B44_ETHIPV6UDP_HLEN);
1556
1557 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1558 B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE);
1559 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1560 B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE);
1561
1562 kfree(pwol_pattern);
1563
1564 /* set these pattern's lengths: one less than each real length */
1565 val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE;
1566 bw32(bp, B44_WKUP_LEN, val);
1567
1568 /* enable wakeup pattern matching */
1569 val = br32(bp, B44_DEVCTRL);
1570 bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE);
1571
1572}
52cafd96 1573
753f4920
MB		 1574#ifdef CONFIG_B44_PCI
1575static void b44_setup_wol_pci(struct b44 *bp)
1576{
1577 u16 val;
1578
1579 if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) {
1580 bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE);
1581 pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val);
1582 pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE);
1583 }
1584}
1585#else
1586static inline void b44_setup_wol_pci(struct b44 *bp) { }
1587#endif /* CONFIG_B44_PCI */
1588
52cafd96
GZ		 1589static void b44_setup_wol(struct b44 *bp)
1590{
1591 u32 val;
52cafd96
GZ		 1592
1593 bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
1594
1595 if (bp->flags & B44_FLAG_B0_ANDLATER) {
1596
1597 bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
1598
1599 val = bp->dev->dev_addr[2] << 24 |
1600 bp->dev->dev_addr[3] << 16 |
1601 bp->dev->dev_addr[4] << 8 |
1602 bp->dev->dev_addr[5];
1603 bw32(bp, B44_ADDR_LO, val);
1604
1605 val = bp->dev->dev_addr[0] << 8 |
1606 bp->dev->dev_addr[1];
1607 bw32(bp, B44_ADDR_HI, val);
1608
1609 val = br32(bp, B44_DEVCTRL);
1610 bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
1611
725ad800
GZ		 1612 } else {
1613 b44_setup_pseudo_magicp(bp);
1614 }
753f4920 1615 b44_setup_wol_pci(bp);
52cafd96
GZ		 1616}
1617
1da177e4
LT		 1618static int b44_close(struct net_device *dev)
1619{
1620 struct b44 *bp = netdev_priv(dev);
1621
1622 netif_stop_queue(dev);
1623
bea3348e 1624 napi_disable(&bp->napi);
ba5eec9c 1625
1da177e4
LT		 1626 del_timer_sync(&bp->timer);
1627
1628 spin_lock_irq(&bp->lock);
1629
1da177e4
LT		 1630 b44_halt(bp);
1631 b44_free_rings(bp);
c35ca399 1632 netif_carrier_off(dev);
1da177e4
LT		 1633
1634 spin_unlock_irq(&bp->lock);
1635
1636 free_irq(dev->irq, dev);
1637
52cafd96 1638 if (bp->flags & B44_FLAG_WOL_ENABLE) {
5fc7d61a 1639 b44_init_hw(bp, B44_PARTIAL_RESET);
52cafd96
GZ		 1640 b44_setup_wol(bp);
1641 }
1642
1da177e4
LT		 1643 b44_free_consistent(bp);
1644
1645 return 0;
1646}
1647
1648static struct net_device_stats *b44_get_stats(struct net_device *dev)
1649{
1650 struct b44 *bp = netdev_priv(dev);
553e2335 1651 struct net_device_stats *nstat = &dev->stats;
1da177e4
LT		 1652 struct b44_hw_stats *hwstat = &bp->hw_stats;
1653
1654 /* Convert HW stats into netdevice stats. */
1655 nstat->rx_packets = hwstat->rx_pkts;
1656 nstat->tx_packets = hwstat->tx_pkts;
1657 nstat->rx_bytes = hwstat->rx_octets;
1658 nstat->tx_bytes = hwstat->tx_octets;
1659 nstat->tx_errors = (hwstat->tx_jabber_pkts +
1660 hwstat->tx_oversize_pkts +
1661 hwstat->tx_underruns +
1662 hwstat->tx_excessive_cols +
1663 hwstat->tx_late_cols);
1664 nstat->multicast = hwstat->tx_multicast_pkts;
1665 nstat->collisions = hwstat->tx_total_cols;
1666
1667 nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
1668 hwstat->rx_undersize);
1669 nstat->rx_over_errors = hwstat->rx_missed_pkts;
1670 nstat->rx_frame_errors = hwstat->rx_align_errs;
1671 nstat->rx_crc_errors = hwstat->rx_crc_errs;
1672 nstat->rx_errors = (hwstat->rx_jabber_pkts +
1673 hwstat->rx_oversize_pkts +
1674 hwstat->rx_missed_pkts +
1675 hwstat->rx_crc_align_errs +
1676 hwstat->rx_undersize +
1677 hwstat->rx_crc_errs +
1678 hwstat->rx_align_errs +
1679 hwstat->rx_symbol_errs);
1680
1681 nstat->tx_aborted_errors = hwstat->tx_underruns;
1682#if 0
1683 /* Carrier lost counter seems to be broken for some devices */
1684 nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
1685#endif
1686
1687 return nstat;
1688}
1689
1690static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
1691{
1692 struct dev_mc_list *mclist;
1693 int i, num_ents;
1694
1695 num_ents = min_t(int, dev->mc_count, B44_MCAST_TABLE_SIZE);
1696 mclist = dev->mc_list;
1697 for (i = 0; mclist && i < num_ents; i++, mclist = mclist->next) {
1698 __b44_cam_write(bp, mclist->dmi_addr, i + 1);
1699 }
1700 return i+1;
1701}
1702
1703static void __b44_set_rx_mode(struct net_device *dev)
1704{
1705 struct b44 *bp = netdev_priv(dev);
1706 u32 val;
1da177e4
LT		 1707
1708 val = br32(bp, B44_RXCONFIG);
1709 val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
753f4920 1710 if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
1da177e4
LT		 1711 val |= RXCONFIG_PROMISC;
1712 bw32(bp, B44_RXCONFIG, val);
1713 } else {
874a6214 1714 unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
cda22aa9 1715 int i = 1;
874a6214 1716
1da177e4
LT		 1717 __b44_set_mac_addr(bp);
1718
2f614fe0
JG		 1719 if ((dev->flags & IFF_ALLMULTI) ||
1720 (dev->mc_count > B44_MCAST_TABLE_SIZE))
1da177e4
LT		 1721 val |= RXCONFIG_ALLMULTI;
1722 else
874a6214 1723 i = __b44_load_mcast(bp, dev);
10badc21 1724
2f614fe0 1725 for (; i < 64; i++)
10badc21 1726 __b44_cam_write(bp, zero, i);
2f614fe0 1727
1da177e4
LT		 1728 bw32(bp, B44_RXCONFIG, val);
1729 val = br32(bp, B44_CAM_CTRL);
1730 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1731 }
1732}
1733
1734static void b44_set_rx_mode(struct net_device *dev)
1735{
1736 struct b44 *bp = netdev_priv(dev);
1737
1738 spin_lock_irq(&bp->lock);
1739 __b44_set_rx_mode(dev);
1740 spin_unlock_irq(&bp->lock);
1741}
1742
1743static u32 b44_get_msglevel(struct net_device *dev)
1744{
1745 struct b44 *bp = netdev_priv(dev);
1746 return bp->msg_enable;
1747}
1748
1749static void b44_set_msglevel(struct net_device *dev, u32 value)
1750{
1751 struct b44 *bp = netdev_priv(dev);
1752 bp->msg_enable = value;
1753}
1754
1755static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1756{
1757 struct b44 *bp = netdev_priv(dev);
753f4920 1758 struct ssb_bus *bus = bp->sdev->bus;
1da177e4 1759
753f4920
MB		 1760 strncpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
1761 strncpy(info->version, DRV_MODULE_VERSION, sizeof(info->driver));
1762 switch (bus->bustype) {
1763 case SSB_BUSTYPE_PCI:
1764 strncpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info));
1765 break;
1766 case SSB_BUSTYPE_PCMCIA:
1767 case SSB_BUSTYPE_SSB:
1768 strncpy(info->bus_info, "SSB", sizeof(info->bus_info));
1769 break;
1770 }
1da177e4
LT		 1771}
1772
1773static int b44_nway_reset(struct net_device *dev)
1774{
1775 struct b44 *bp = netdev_priv(dev);
1776 u32 bmcr;
1777 int r;
1778
1779 spin_lock_irq(&bp->lock);
1780 b44_readphy(bp, MII_BMCR, &bmcr);
1781 b44_readphy(bp, MII_BMCR, &bmcr);
1782 r = -EINVAL;
1783 if (bmcr & BMCR_ANENABLE) {
1784 b44_writephy(bp, MII_BMCR,
1785 bmcr | BMCR_ANRESTART);
1786 r = 0;
1787 }
1788 spin_unlock_irq(&bp->lock);
1789
1790 return r;
1791}
1792
1793static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1794{
1795 struct b44 *bp = netdev_priv(dev);
1796
1da177e4
LT		 1797 cmd->supported = (SUPPORTED_Autoneg);
1798 cmd->supported |= (SUPPORTED_100baseT_Half |
1799 SUPPORTED_100baseT_Full |
1800 SUPPORTED_10baseT_Half |
1801 SUPPORTED_10baseT_Full |
1802 SUPPORTED_MII);
1803
1804 cmd->advertising = 0;
1805 if (bp->flags & B44_FLAG_ADV_10HALF)
adf6e000 1806 cmd->advertising |= ADVERTISED_10baseT_Half;
1da177e4 1807 if (bp->flags & B44_FLAG_ADV_10FULL)
adf6e000 1808 cmd->advertising |= ADVERTISED_10baseT_Full;
1da177e4 1809 if (bp->flags & B44_FLAG_ADV_100HALF)
adf6e000 1810 cmd->advertising |= ADVERTISED_100baseT_Half;
1da177e4 1811 if (bp->flags & B44_FLAG_ADV_100FULL)
adf6e000
MW		 1812 cmd->advertising |= ADVERTISED_100baseT_Full;
1813 cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
1da177e4
LT		 1814 cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ?
1815 SPEED_100 : SPEED_10;
1816 cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
1817 DUPLEX_FULL : DUPLEX_HALF;
1818 cmd->port = 0;
1819 cmd->phy_address = bp->phy_addr;
1820 cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ?
1821 XCVR_INTERNAL : XCVR_EXTERNAL;
1822 cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
1823 AUTONEG_DISABLE : AUTONEG_ENABLE;
47b9c3b1
GZ		 1824 if (cmd->autoneg == AUTONEG_ENABLE)
1825 cmd->advertising |= ADVERTISED_Autoneg;
1826 if (!netif_running(dev)){
1827 cmd->speed = 0;
1828 cmd->duplex = 0xff;
1829 }
1da177e4
LT		 1830 cmd->maxtxpkt = 0;
1831 cmd->maxrxpkt = 0;
1832 return 0;
1833}
1834
1835static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1836{
1837 struct b44 *bp = netdev_priv(dev);
1838
1da177e4
LT		 1839 /* We do not support gigabit. */
1840 if (cmd->autoneg == AUTONEG_ENABLE) {
1841 if (cmd->advertising &
1842 (ADVERTISED_1000baseT_Half |
1843 ADVERTISED_1000baseT_Full))
1844 return -EINVAL;
1845 } else if ((cmd->speed != SPEED_100 &&
1846 cmd->speed != SPEED_10) ||
1847 (cmd->duplex != DUPLEX_HALF &&
1848 cmd->duplex != DUPLEX_FULL)) {
1849 return -EINVAL;
1850 }
1851
1852 spin_lock_irq(&bp->lock);
1853
1854 if (cmd->autoneg == AUTONEG_ENABLE) {
47b9c3b1
GZ		 1855 bp->flags &= ~(B44_FLAG_FORCE_LINK |
1856 B44_FLAG_100_BASE_T |
1857 B44_FLAG_FULL_DUPLEX |
1858 B44_FLAG_ADV_10HALF |
1da177e4
LT		 1859 B44_FLAG_ADV_10FULL |
1860 B44_FLAG_ADV_100HALF |
1861 B44_FLAG_ADV_100FULL);
47b9c3b1
GZ		 1862 if (cmd->advertising == 0) {
1863 bp->flags |= (B44_FLAG_ADV_10HALF |
1864 B44_FLAG_ADV_10FULL |
1865 B44_FLAG_ADV_100HALF |
1866 B44_FLAG_ADV_100FULL);
1867 } else {
1868 if (cmd->advertising & ADVERTISED_10baseT_Half)
1869 bp->flags |= B44_FLAG_ADV_10HALF;
1870 if (cmd->advertising & ADVERTISED_10baseT_Full)
1871 bp->flags |= B44_FLAG_ADV_10FULL;
1872 if (cmd->advertising & ADVERTISED_100baseT_Half)
1873 bp->flags |= B44_FLAG_ADV_100HALF;
1874 if (cmd->advertising & ADVERTISED_100baseT_Full)
1875 bp->flags |= B44_FLAG_ADV_100FULL;
1876 }
1da177e4
LT		 1877 } else {
1878 bp->flags |= B44_FLAG_FORCE_LINK;
47b9c3b1 1879 bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX);
1da177e4
LT		 1880 if (cmd->speed == SPEED_100)
1881 bp->flags |= B44_FLAG_100_BASE_T;
1882 if (cmd->duplex == DUPLEX_FULL)
1883 bp->flags |= B44_FLAG_FULL_DUPLEX;
1884 }
1885
47b9c3b1
GZ		 1886 if (netif_running(dev))
1887 b44_setup_phy(bp);
1da177e4
LT		 1888
1889 spin_unlock_irq(&bp->lock);
1890
1891 return 0;
1892}
1893
1894static void b44_get_ringparam(struct net_device *dev,
1895 struct ethtool_ringparam *ering)
1896{
1897 struct b44 *bp = netdev_priv(dev);
1898
1899 ering->rx_max_pending = B44_RX_RING_SIZE - 1;
1900 ering->rx_pending = bp->rx_pending;
1901
1902 /* XXX ethtool lacks a tx_max_pending, oops... */
1903}
1904
1905static int b44_set_ringparam(struct net_device *dev,
1906 struct ethtool_ringparam *ering)
1907{
1908 struct b44 *bp = netdev_priv(dev);
1909
1910 if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
1911 (ering->rx_mini_pending != 0) ||
1912 (ering->rx_jumbo_pending != 0) ||
1913 (ering->tx_pending > B44_TX_RING_SIZE - 1))
1914 return -EINVAL;
1915
1916 spin_lock_irq(&bp->lock);
1917
1918 bp->rx_pending = ering->rx_pending;
1919 bp->tx_pending = ering->tx_pending;
1920
1921 b44_halt(bp);
1922 b44_init_rings(bp);
5fc7d61a 1923 b44_init_hw(bp, B44_FULL_RESET);
1da177e4
LT		 1924 netif_wake_queue(bp->dev);
1925 spin_unlock_irq(&bp->lock);
1926
1927 b44_enable_ints(bp);
10badc21 1928
1da177e4
LT		 1929 return 0;
1930}
1931
1932static void b44_get_pauseparam(struct net_device *dev,
1933 struct ethtool_pauseparam *epause)
1934{
1935 struct b44 *bp = netdev_priv(dev);
1936
1937 epause->autoneg =
1938 (bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
1939 epause->rx_pause =
1940 (bp->flags & B44_FLAG_RX_PAUSE) != 0;
1941 epause->tx_pause =
1942 (bp->flags & B44_FLAG_TX_PAUSE) != 0;
1943}
1944
1945static int b44_set_pauseparam(struct net_device *dev,
1946 struct ethtool_pauseparam *epause)
1947{
1948 struct b44 *bp = netdev_priv(dev);
1949
1950 spin_lock_irq(&bp->lock);
1951 if (epause->autoneg)
1952 bp->flags |= B44_FLAG_PAUSE_AUTO;
1953 else
1954 bp->flags &= ~B44_FLAG_PAUSE_AUTO;
1955 if (epause->rx_pause)
1956 bp->flags |= B44_FLAG_RX_PAUSE;
1957 else
1958 bp->flags &= ~B44_FLAG_RX_PAUSE;
1959 if (epause->tx_pause)
1960 bp->flags |= B44_FLAG_TX_PAUSE;
1961 else
1962 bp->flags &= ~B44_FLAG_TX_PAUSE;
1963 if (bp->flags & B44_FLAG_PAUSE_AUTO) {
1964 b44_halt(bp);
1965 b44_init_rings(bp);
5fc7d61a 1966 b44_init_hw(bp, B44_FULL_RESET);
1da177e4
LT		 1967 } else {
1968 __b44_set_flow_ctrl(bp, bp->flags);
1969 }
1970 spin_unlock_irq(&bp->lock);
1971
1972 b44_enable_ints(bp);
10badc21 1973
1da177e4
LT		 1974 return 0;
1975}
1976
3353930d
FR		 1977static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1978{
1979 switch(stringset) {
1980 case ETH_SS_STATS:
1981 memcpy(data, *b44_gstrings, sizeof(b44_gstrings));
1982 break;
1983 }
1984}
1985
b9f2c044 1986static int b44_get_sset_count(struct net_device *dev, int sset)
3353930d 1987{
b9f2c044
JG		 1988 switch (sset) {
1989 case ETH_SS_STATS:
1990 return ARRAY_SIZE(b44_gstrings);
1991 default:
1992 return -EOPNOTSUPP;
1993 }
3353930d
FR		 1994}
1995
1996static void b44_get_ethtool_stats(struct net_device *dev,
1997 struct ethtool_stats *stats, u64 *data)
1998{
1999 struct b44 *bp = netdev_priv(dev);
2000 u32 *val = &bp->hw_stats.tx_good_octets;
2001 u32 i;
2002
2003 spin_lock_irq(&bp->lock);
2004
2005 b44_stats_update(bp);
2006
2007 for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++)
2008 *data++ = *val++;
2009
2010 spin_unlock_irq(&bp->lock);
2011}
2012
52cafd96
GZ		 2013static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2014{
2015 struct b44 *bp = netdev_priv(dev);
2016
2017 wol->supported = WAKE_MAGIC;
2018 if (bp->flags & B44_FLAG_WOL_ENABLE)
2019 wol->wolopts = WAKE_MAGIC;
2020 else
2021 wol->wolopts = 0;
2022 memset(&wol->sopass, 0, sizeof(wol->sopass));
2023}
2024
2025static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2026{
2027 struct b44 *bp = netdev_priv(dev);
2028
2029 spin_lock_irq(&bp->lock);
2030 if (wol->wolopts & WAKE_MAGIC)
2031 bp->flags |= B44_FLAG_WOL_ENABLE;
2032 else
2033 bp->flags &= ~B44_FLAG_WOL_ENABLE;
2034 spin_unlock_irq(&bp->lock);
2035
2036 return 0;
2037}
2038
7282d491 2039static const struct ethtool_ops b44_ethtool_ops = {
1da177e4
LT		 2040 .get_drvinfo = b44_get_drvinfo,
2041 .get_settings = b44_get_settings,
2042 .set_settings = b44_set_settings,
2043 .nway_reset = b44_nway_reset,
2044 .get_link = ethtool_op_get_link,
52cafd96
GZ		 2045 .get_wol = b44_get_wol,
2046 .set_wol = b44_set_wol,
1da177e4
LT		 2047 .get_ringparam = b44_get_ringparam,
2048 .set_ringparam = b44_set_ringparam,
2049 .get_pauseparam = b44_get_pauseparam,
2050 .set_pauseparam = b44_set_pauseparam,
2051 .get_msglevel = b44_get_msglevel,
2052 .set_msglevel = b44_set_msglevel,
3353930d 2053 .get_strings = b44_get_strings,
b9f2c044 2054 .get_sset_count = b44_get_sset_count,
3353930d 2055 .get_ethtool_stats = b44_get_ethtool_stats,
1da177e4
LT		 2056};
2057
2058static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2059{
2060 struct mii_ioctl_data *data = if_mii(ifr);
2061 struct b44 *bp = netdev_priv(dev);
3410572d
FR		 2062 int err = -EINVAL;
2063
2064 if (!netif_running(dev))
2065 goto out;
1da177e4
LT		 2066
2067 spin_lock_irq(&bp->lock);
2068 err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL);
2069 spin_unlock_irq(&bp->lock);
3410572d 2070out:
1da177e4
LT		 2071 return err;
2072}
2073
1da177e4
LT		 2074static int __devinit b44_get_invariants(struct b44 *bp)
2075{
753f4920
MB		 2076 struct ssb_device *sdev = bp->sdev;
2077 int err = 0;
2078 u8 *addr;
1da177e4 2079
753f4920 2080 bp->dma_offset = ssb_dma_translation(sdev);
1da177e4 2081
753f4920
MB		 2082 if (sdev->bus->bustype == SSB_BUSTYPE_SSB &&
2083 instance > 1) {
458414b2
LF		 2084 addr = sdev->bus->sprom.et1mac;
2085 bp->phy_addr = sdev->bus->sprom.et1phyaddr;
753f4920 2086 } else {
458414b2
LF		 2087 addr = sdev->bus->sprom.et0mac;
2088 bp->phy_addr = sdev->bus->sprom.et0phyaddr;
753f4920 2089 }
5ea79631
MB		 2090 /* Some ROMs have buggy PHY addresses with the high
2091 * bits set (sign extension?). Truncate them to a
2092 * valid PHY address. */
2093 bp->phy_addr &= 0x1F;
2094
753f4920 2095 memcpy(bp->dev->dev_addr, addr, 6);
391fc09a
GZ		 2096
2097 if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
2098 printk(KERN_ERR PFX "Invalid MAC address found in EEPROM\n");
2099 return -EINVAL;
2100 }
2101
2160de53 2102 memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len);
1da177e4 2103
1da177e4
LT		 2104 bp->imask = IMASK_DEF;
2105
10badc21 2106 /* XXX - really required?
1da177e4 2107 bp->flags |= B44_FLAG_BUGGY_TXPTR;
753f4920 2108 */
52cafd96 2109
753f4920
MB		 2110 if (bp->sdev->id.revision >= 7)
2111 bp->flags |= B44_FLAG_B0_ANDLATER;
52cafd96 2112
1da177e4
LT		 2113 return err;
2114}
2115
403413e5
SH		 2116static const struct net_device_ops b44_netdev_ops = {
2117 .ndo_open = b44_open,
2118 .ndo_stop = b44_close,
2119 .ndo_start_xmit = b44_start_xmit,
2120 .ndo_get_stats = b44_get_stats,
2121 .ndo_set_multicast_list = b44_set_rx_mode,
2122 .ndo_set_mac_address = b44_set_mac_addr,
2123 .ndo_validate_addr = eth_validate_addr,
2124 .ndo_do_ioctl = b44_ioctl,
2125 .ndo_tx_timeout = b44_tx_timeout,
2126 .ndo_change_mtu = b44_change_mtu,
2127#ifdef CONFIG_NET_POLL_CONTROLLER
2128 .ndo_poll_controller = b44_poll_controller,
2129#endif
2130};
2131
753f4920
MB		 2132static int __devinit b44_init_one(struct ssb_device *sdev,
2133 const struct ssb_device_id *ent)
1da177e4
LT		 2134{
2135 static int b44_version_printed = 0;
1da177e4
LT		 2136 struct net_device *dev;
2137 struct b44 *bp;
0795af57 2138 int err;
1da177e4 2139
753f4920
MB		 2140 instance++;
2141
1da177e4
LT		 2142 if (b44_version_printed++ == 0)
2143 printk(KERN_INFO "%s", version);
2144
1da177e4
LT		 2145
2146 dev = alloc_etherdev(sizeof(*bp));
2147 if (!dev) {
753f4920 2148 dev_err(sdev->dev, "Etherdev alloc failed, aborting.\n");
1da177e4 2149 err = -ENOMEM;
753f4920 2150 goto out;
1da177e4
LT		 2151 }
2152
753f4920 2153 SET_NETDEV_DEV(dev, sdev->dev);
1da177e4
LT		 2154
2155 /* No interesting netdevice features in this card... */
2156 dev->features |= 0;
2157
2158 bp = netdev_priv(dev);
753f4920 2159 bp->sdev = sdev;
1da177e4 2160 bp->dev = dev;
a58c891a 2161 bp->force_copybreak = 0;
874a6214
FR		 2162
2163 bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE);
1da177e4
LT		 2164
2165 spin_lock_init(&bp->lock);
2166
1da177e4
LT		 2167 bp->rx_pending = B44_DEF_RX_RING_PENDING;
2168 bp->tx_pending = B44_DEF_TX_RING_PENDING;
2169
403413e5 2170 dev->netdev_ops = &b44_netdev_ops;
bea3348e 2171 netif_napi_add(dev, &bp->napi, b44_poll, 64);
1da177e4 2172 dev->watchdog_timeo = B44_TX_TIMEOUT;
753f4920 2173 dev->irq = sdev->irq;
1da177e4
LT		 2174 SET_ETHTOOL_OPS(dev, &b44_ethtool_ops);
2175
c35ca399
SH		 2176 netif_carrier_off(dev);
2177
753f4920
MB		 2178 err = ssb_bus_powerup(sdev->bus, 0);
2179 if (err) {
2180 dev_err(sdev->dev,
2181 "Failed to powerup the bus\n");
2182 goto err_out_free_dev;
2183 }
28b76796 2184 err = ssb_dma_set_mask(sdev, DMA_BIT_MASK(30));
753f4920
MB		 2185 if (err) {
2186 dev_err(sdev->dev,
2187 "Required 30BIT DMA mask unsupported by the system.\n");
2188 goto err_out_powerdown;
2189 }
1da177e4
LT		 2190 err = b44_get_invariants(bp);
2191 if (err) {
753f4920 2192 dev_err(sdev->dev,
2e8a538d 2193 "Problem fetching invariants of chip, aborting.\n");
753f4920 2194 goto err_out_powerdown;
1da177e4
LT		 2195 }
2196
2197 bp->mii_if.dev = dev;
2198 bp->mii_if.mdio_read = b44_mii_read;
2199 bp->mii_if.mdio_write = b44_mii_write;
2200 bp->mii_if.phy_id = bp->phy_addr;
2201 bp->mii_if.phy_id_mask = 0x1f;
2202 bp->mii_if.reg_num_mask = 0x1f;
2203
2204 /* By default, advertise all speed/duplex settings. */
2205 bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
2206 B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
2207
2208 /* By default, auto-negotiate PAUSE. */
2209 bp->flags |= B44_FLAG_PAUSE_AUTO;
2210
2211 err = register_netdev(dev);
2212 if (err) {
753f4920
MB		 2213 dev_err(sdev->dev, "Cannot register net device, aborting.\n");
2214 goto err_out_powerdown;
1da177e4
LT		 2215 }
2216
753f4920 2217 ssb_set_drvdata(sdev, dev);
1da177e4 2218
10badc21 2219 /* Chip reset provides power to the b44 MAC & PCI cores, which
5c513129 2220 * is necessary for MAC register access.
10badc21 2221 */
fedb0eef 2222 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
5c513129 2223
e174961c
JB		 2224 printk(KERN_INFO "%s: Broadcom 44xx/47xx 10/100BaseT Ethernet %pM\n",
2225 dev->name, dev->dev_addr);
1da177e4
LT		 2226
2227 return 0;
2228
753f4920
MB		 2229err_out_powerdown:
2230 ssb_bus_may_powerdown(sdev->bus);
1da177e4
LT		 2231
2232err_out_free_dev:
2233 free_netdev(dev);
2234
753f4920 2235out:
1da177e4
LT		 2236 return err;
2237}
2238
753f4920 2239static void __devexit b44_remove_one(struct ssb_device *sdev)
1da177e4 2240{
753f4920 2241 struct net_device *dev = ssb_get_drvdata(sdev);
1da177e4 2242
874a6214 2243 unregister_netdev(dev);
e92aa634 2244 ssb_device_disable(sdev, 0);
753f4920 2245 ssb_bus_may_powerdown(sdev->bus);
874a6214 2246 free_netdev(dev);
fedb0eef 2247 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
753f4920 2248 ssb_set_drvdata(sdev, NULL);
1da177e4
LT		 2249}
2250
753f4920 2251static int b44_suspend(struct ssb_device *sdev, pm_message_t state)
1da177e4 2252{
753f4920 2253 struct net_device *dev = ssb_get_drvdata(sdev);
1da177e4
LT		 2254 struct b44 *bp = netdev_priv(dev);
2255
753f4920
MB		 2256 if (!netif_running(dev))
2257 return 0;
1da177e4
LT		 2258
2259 del_timer_sync(&bp->timer);
2260
10badc21 2261 spin_lock_irq(&bp->lock);
1da177e4
LT		 2262
2263 b44_halt(bp);
10badc21 2264 netif_carrier_off(bp->dev);
1da177e4
LT		 2265 netif_device_detach(bp->dev);
2266 b44_free_rings(bp);
2267
2268 spin_unlock_irq(&bp->lock);
46e17853
PM		 2269
2270 free_irq(dev->irq, dev);
52cafd96 2271 if (bp->flags & B44_FLAG_WOL_ENABLE) {
5fc7d61a 2272 b44_init_hw(bp, B44_PARTIAL_RESET);
52cafd96
GZ		 2273 b44_setup_wol(bp);
2274 }
753f4920 2275
fedb0eef 2276 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
1da177e4
LT		 2277 return 0;
2278}
2279
753f4920 2280static int b44_resume(struct ssb_device *sdev)
1da177e4 2281{
753f4920 2282 struct net_device *dev = ssb_get_drvdata(sdev);
1da177e4 2283 struct b44 *bp = netdev_priv(dev);
90afd0e5 2284 int rc = 0;
1da177e4 2285
753f4920 2286 rc = ssb_bus_powerup(sdev->bus, 0);
90afd0e5 2287 if (rc) {
753f4920
MB		 2288 dev_err(sdev->dev,
2289 "Failed to powerup the bus\n");
90afd0e5
DM		 2290 return rc;
2291 }
2292
1da177e4
LT		 2293 if (!netif_running(dev))
2294 return 0;
2295
90afd0e5
DM		 2296 rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
2297 if (rc) {
46e17853 2298 printk(KERN_ERR PFX "%s: request_irq failed\n", dev->name);
90afd0e5
DM		 2299 return rc;
2300 }
46e17853 2301
1da177e4
LT		 2302 spin_lock_irq(&bp->lock);
2303
2304 b44_init_rings(bp);
5fc7d61a 2305 b44_init_hw(bp, B44_FULL_RESET);
1da177e4
LT		 2306 netif_device_attach(bp->dev);
2307 spin_unlock_irq(&bp->lock);
2308
1da177e4 2309 b44_enable_ints(bp);
d9e2d185 2310 netif_wake_queue(dev);
a72a8179
SH		 2311
2312 mod_timer(&bp->timer, jiffies + 1);
2313
1da177e4
LT		 2314 return 0;
2315}
2316
753f4920 2317static struct ssb_driver b44_ssb_driver = {
1da177e4 2318 .name = DRV_MODULE_NAME,
753f4920 2319 .id_table = b44_ssb_tbl,
1da177e4
LT		 2320 .probe = b44_init_one,
2321 .remove = __devexit_p(b44_remove_one),
753f4920
MB		 2322 .suspend = b44_suspend,
2323 .resume = b44_resume,
1da177e4
LT		 2324};
2325
753f4920
MB		 2326static inline int b44_pci_init(void)
2327{
2328 int err = 0;
2329#ifdef CONFIG_B44_PCI
2330 err = ssb_pcihost_register(&b44_pci_driver);
2331#endif
2332 return err;
2333}
2334
2335static inline void b44_pci_exit(void)
2336{
2337#ifdef CONFIG_B44_PCI
2338 ssb_pcihost_unregister(&b44_pci_driver);
2339#endif
2340}
2341
1da177e4
LT		 2342static int __init b44_init(void)
2343{
9f38c636 2344 unsigned int dma_desc_align_size = dma_get_cache_alignment();
753f4920 2345 int err;
9f38c636
JL		 2346
2347 /* Setup paramaters for syncing RX/TX DMA descriptors */
2348 dma_desc_align_mask = ~(dma_desc_align_size - 1);
22d4d771 2349 dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
9f38c636 2350
753f4920
MB		 2351 err = b44_pci_init();
2352 if (err)
2353 return err;
2354 err = ssb_driver_register(&b44_ssb_driver);
2355 if (err)
2356 b44_pci_exit();
2357 return err;
1da177e4
LT		 2358}
2359
2360static void __exit b44_cleanup(void)
2361{
753f4920
MB		 2362 ssb_driver_unregister(&b44_ssb_driver);
2363 b44_pci_exit();
1da177e4
LT		 2364}
2365
2366module_init(b44_init);
2367module_exit(b44_cleanup);
2368
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