blob: ea2a2b548e3c85f380fef916827df61ce45329e9 [file] [log] [blame]
Michael Buesch753f4922007-09-19 14:20:30 -07001/* b44.c: Broadcom 44xx/47xx Fast Ethernet device driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 *
3 * Copyright (C) 2002 David S. Miller (davem@redhat.com)
Michael Buesch753f4922007-09-19 14:20:30 -07004 * 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)
Gary Zambrano8056bfa2006-04-10 12:05:40 -07007 * Copyright (C) 2006 Broadcom Corporation.
Michael Buesch753f4922007-09-19 14:20:30 -07008 * Copyright (C) 2007 Michael Buesch <mb@bu3sch.de>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 *
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>
Stephen Hemminger72f48612007-06-04 13:25:39 -070021#include <linux/if_vlan.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <linux/etherdevice.h>
23#include <linux/pci.h>
24#include <linux/delay.h>
25#include <linux/init.h>
Andrew Morton89358f92005-10-28 16:38:02 -040026#include <linux/dma-mapping.h>
Michael Buesch753f4922007-09-19 14:20:30 -070027#include <linux/ssb/ssb.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070028
29#include <asm/uaccess.h>
30#include <asm/io.h>
31#include <asm/irq.h>
32
Michael Buesch753f4922007-09-19 14:20:30 -070033
Linus Torvalds1da177e2005-04-16 15:20:36 -070034#include "b44.h"
35
36#define DRV_MODULE_NAME "b44"
37#define PFX DRV_MODULE_NAME ": "
Michael Buesch753f4922007-09-19 14:20:30 -070038#define DRV_MODULE_VERSION "2.0"
Linus Torvalds1da177e2005-04-16 15:20:36 -070039
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)
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
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
Stephen Hemminger72f48612007-06-04 13:25:39 -070076#define RX_PKT_OFFSET 30
77#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET + 64)
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
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
Gary Zambrano725ad802006-06-20 15:34:36 -070082/* 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070091static char version[] __devinitdata =
Michael Buesch753f4922007-09-19 14:20:30 -070092 DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION "\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
Michael Buesch753f4922007-09-19 14:20:30 -070094MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller");
95MODULE_DESCRIPTION("Broadcom 44xx/47xx 10/100 PCI ethernet driver");
Linus Torvalds1da177e2005-04-16 15:20:36 -070096MODULE_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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103
Michael Buesch753f4922007-09-19 14:20:30 -0700104#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};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111MODULE_DEVICE_TABLE(pci, b44_pci_tbl);
112
Michael Buesch753f4922007-09-19 14:20:30 -0700113static 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125static void b44_halt(struct b44 *);
126static void b44_init_rings(struct b44 *);
Michael Chan5fc7d612007-01-26 23:59:57 -0800127
128#define B44_FULL_RESET 1
129#define B44_FULL_RESET_SKIP_PHY 2
130#define B44_PARTIAL_RESET 3
Miguel Botónfedb0ee2008-01-01 01:17:54 +0100131#define B44_CHIP_RESET_FULL 4
132#define B44_CHIP_RESET_PARTIAL 5
Michael Chan5fc7d612007-01-26 23:59:57 -0800133
Gary Zambrano00e8b3a2006-06-20 15:34:26 -0700134static void b44_init_hw(struct b44 *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
John W. Linville9f38c632005-10-18 21:30:59 -0400136static int dma_desc_align_mask;
137static int dma_desc_sync_size;
Michael Buesch753f4922007-09-19 14:20:30 -0700138static int instance;
John W. Linville9f38c632005-10-18 21:30:59 -0400139
Francois Romieu33539302005-11-07 01:51:34 +0100140static const char b44_gstrings[][ETH_GSTRING_LEN] = {
141#define _B44(x...) # x,
142B44_STAT_REG_DECLARE
143#undef _B44
144};
145
Michael Buesch753f4922007-09-19 14:20:30 -0700146static 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)
John W. Linville9f38c632005-10-18 21:30:59 -0400150{
Michael Buesch753f4922007-09-19 14:20:30 -0700151 dma_sync_single_range_for_device(sdev->dev, dma_base,
152 offset & dma_desc_align_mask,
153 dma_desc_sync_size, dir);
John W. Linville9f38c632005-10-18 21:30:59 -0400154}
155
Michael Buesch753f4922007-09-19 14:20:30 -0700156static 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)
John W. Linville9f38c632005-10-18 21:30:59 -0400160{
Michael Buesch753f4922007-09-19 14:20:30 -0700161 dma_sync_single_range_for_cpu(sdev->dev, dma_base,
162 offset & dma_desc_align_mask,
163 dma_desc_sync_size, dir);
John W. Linville9f38c632005-10-18 21:30:59 -0400164}
165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166static inline unsigned long br32(const struct b44 *bp, unsigned long reg)
167{
Michael Buesch753f4922007-09-19 14:20:30 -0700168 return ssb_read32(bp->sdev, reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169}
170
Jeff Garzik10badc22006-04-12 18:04:32 -0400171static inline void bw32(const struct b44 *bp,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 unsigned long reg, unsigned long val)
173{
Michael Buesch753f4922007-09-19 14:20:30 -0700174 ssb_write32(bp->sdev, reg, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175}
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
Michael Buesch753f4922007-09-19 14:20:30 -0700202static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203{
204 u32 val;
205
Michael Buesch753f4922007-09-19 14:20:30 -0700206 bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ |
207 (index << CAM_CTRL_INDEX_SHIFT)));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208
Michael Buesch753f4922007-09-19 14:20:30 -0700209 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
Michael Buesch753f4922007-09-19 14:20:30 -0700211 val = br32(bp, B44_CAM_DATA_LO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
Michael Buesch753f4922007-09-19 14:20:30 -0700213 data[2] = (val >> 24) & 0xFF;
214 data[3] = (val >> 16) & 0xFF;
215 data[4] = (val >> 8) & 0xFF;
216 data[5] = (val >> 0) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
Michael Buesch753f4922007-09-19 14:20:30 -0700218 val = br32(bp, B44_CAM_DATA_HI);
219
220 data[0] = (val >> 8) & 0xFF;
221 data[1] = (val >> 0) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222}
223
Michael Buesch753f4922007-09-19 14:20:30 -0700224static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225{
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);
Jeff Garzik10badc22006-04-12 18:04:32 -0400233 val = (CAM_DATA_HI_VALID |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 (((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)));
Jeff Garzik10badc22006-04-12 18:04:32 -0400239 b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240}
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
Michael Buesch753f4922007-09-19 14:20:30 -0700260static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261{
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) |
Michael Buesch753f4922007-09-19 14:20:30 -0700267 (phy_addr << MDIO_DATA_PMD_SHIFT) |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 (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
Michael Buesch753f4922007-09-19 14:20:30 -0700276static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277{
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) |
Michael Buesch753f4922007-09-19 14:20:30 -0700281 (phy_addr << MDIO_DATA_PMD_SHIFT) |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 (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
Michael Buesch753f4922007-09-19 14:20:30 -0700288static 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304/* miilib interface */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305static int b44_mii_read(struct net_device *dev, int phy_id, int location)
306{
307 u32 val;
308 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -0700309 int rc = __b44_readphy(bp, phy_id, location, &val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310 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);
Michael Buesch753f4922007-09-19 14:20:30 -0700319 __b44_writephy(bp, phy_id, location, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320}
321
322static int b44_phy_reset(struct b44 *bp)
323{
324 u32 val;
325 int err;
326
Michael Buesch753f4922007-09-19 14:20:30 -0700327 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
328 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 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{
Jeff Garzik10badc22006-04-12 18:04:32 -0400370 u32 pause_enab = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700372 /* The driver supports only rx pause by default because
Jeff Garzik10badc22006-04-12 18:04:32 -0400373 the b44 mac tx pause mechanism generates excessive
374 pause frames.
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700375 Use ethtool to turn on b44 tx pause if necessary.
376 */
377 if ((local & ADVERTISE_PAUSE_CAP) &&
Jeff Garzik10badc22006-04-12 18:04:32 -0400378 (local & ADVERTISE_PAUSE_ASYM)){
Gary Zambrano2b474cf2006-04-10 12:02:21 -0700379 if ((remote & LPA_PAUSE_ASYM) &&
380 !(remote & LPA_PAUSE_CAP))
381 pause_enab |= B44_FLAG_RX_PAUSE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 }
383
384 __b44_set_flow_ctrl(bp, pause_enab);
385}
386
Michael Buesch753f4922007-09-19 14:20:30 -0700387#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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424static int b44_setup_phy(struct b44 *bp)
425{
426 u32 val;
427 int err;
428
Michael Buesch753f4922007-09-19 14:20:30 -0700429 b44_wap54g10_workaround(bp);
430
431 if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
432 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 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 }
Francois Romieu33539302005-11-07 01:51:34 +0100497
498 /* Pad */
499 reg += 8*4UL;
500
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 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
Michael Buesch753f4922007-09-19 14:20:30 -0700528 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 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
Stephen Hemmingera72a8172007-06-04 13:25:37 -0700599 mod_timer(&bp->timer, round_jiffies(jiffies + HZ));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600}
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
Eric Sesterhenn5d9428d2006-04-02 13:52:48 +0200614 BUG_ON(skb == NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615
Michael Buesch753f4922007-09-19 14:20:30 -0700616 dma_unmap_single(bp->sdev->dev,
617 rp->mapping,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 skb->len,
Michael Buesch753f4922007-09-19 14:20:30 -0700619 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 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];
Stephen Hemmingerbf0dcbd2007-06-04 13:25:40 -0700652 skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 if (skb == NULL)
654 return -ENOMEM;
655
Michael Buesch753f4922007-09-19 14:20:30 -0700656 mapping = dma_map_single(bp->sdev->dev, skb->data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 RX_PKT_BUF_SZ,
Michael Buesch753f4922007-09-19 14:20:30 -0700658 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659
660 /* Hardware bug work-around, the chip is unable to do PCI DMA
661 to/from anything above 1GB :-( */
Andi Kleen639b4212006-05-15 18:19:35 +0200662 if (dma_mapping_error(mapping) ||
Gary Zambrano97db9ee72007-02-16 13:27:23 -0800663 mapping + RX_PKT_BUF_SZ > DMA_30BIT_MASK) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 /* Sigh... */
Andi Kleen639b4212006-05-15 18:19:35 +0200665 if (!dma_mapping_error(mapping))
Michael Buesch753f4922007-09-19 14:20:30 -0700666 dma_unmap_single(bp->sdev->dev, mapping,
667 RX_PKT_BUF_SZ, DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 dev_kfree_skb_any(skb);
Stephen Hemmingerbf0dcbd2007-06-04 13:25:40 -0700669 skb = __netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ, GFP_ATOMIC|GFP_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 if (skb == NULL)
671 return -ENOMEM;
Michael Buesch753f4922007-09-19 14:20:30 -0700672 mapping = dma_map_single(bp->sdev->dev, skb->data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 RX_PKT_BUF_SZ,
Michael Buesch753f4922007-09-19 14:20:30 -0700674 DMA_FROM_DEVICE);
Andi Kleen639b4212006-05-15 18:19:35 +0200675 if (dma_mapping_error(mapping) ||
Gary Zambrano97db9ee72007-02-16 13:27:23 -0800676 mapping + RX_PKT_BUF_SZ > DMA_30BIT_MASK) {
Andi Kleen639b4212006-05-15 18:19:35 +0200677 if (!dma_mapping_error(mapping))
Michael Buesch753f4922007-09-19 14:20:30 -0700678 dma_unmap_single(bp->sdev->dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 dev_kfree_skb_any(skb);
680 return -ENOMEM;
681 }
682 }
683
Stephen Hemminger72f48612007-06-04 13:25:39 -0700684 rh = (struct rx_header *) skb->data;
685 skb_reserve(skb, RX_PKT_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 rh->len = 0;
688 rh->flags = 0;
689
690 map->skb = skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700691 map->mapping = mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692
693 if (src_map != NULL)
694 src_map->skb = NULL;
695
Stephen Hemminger72f48612007-06-04 13:25:39 -0700696 ctrl = (DESC_CTRL_LEN & (RX_PKT_BUF_SZ - RX_PKT_OFFSET));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 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);
Stephen Hemminger72f48612007-06-04 13:25:39 -0700702 dp->addr = cpu_to_le32((u32) mapping + RX_PKT_OFFSET + bp->dma_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703
John W. Linville9f38c632005-10-18 21:30:59 -0400704 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700705 b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
706 dest_idx * sizeof(dp),
707 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400708
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 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;
Al Viroa7bed272007-01-29 15:36:54 -0500718 __le32 ctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719
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;
Michael Buesch753f4922007-09-19 14:20:30 -0700730 dest_map->mapping = src_map->mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731
John W. Linville9f38c632005-10-18 21:30:59 -0400732 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700733 b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma,
734 src_idx * sizeof(src_desc),
735 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400736
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 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;
John W. Linville9f38c632005-10-18 21:30:59 -0400745
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746 src_map->skb = NULL;
747
John W. Linville9f38c632005-10-18 21:30:59 -0400748 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -0700749 b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma,
750 dest_idx * sizeof(dest_desc),
751 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400752
Michael Buesch753f4922007-09-19 14:20:30 -0700753 dma_sync_single_for_device(bp->sdev->dev, le32_to_cpu(src_desc->addr),
754 RX_PKT_BUF_SZ,
755 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756}
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;
Michael Buesch753f4922007-09-19 14:20:30 -0700771 dma_addr_t map = rp->mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 struct rx_header *rh;
773 u16 len;
774
Michael Buesch753f4922007-09-19 14:20:30 -0700775 dma_sync_single_for_cpu(bp->sdev->dev, map,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 RX_PKT_BUF_SZ,
Michael Buesch753f4922007-09-19 14:20:30 -0700777 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 rh = (struct rx_header *) skb->data;
Al Viroa7bed272007-01-29 15:36:54 -0500779 len = le16_to_cpu(rh->len);
Stephen Hemminger72f48612007-06-04 13:25:39 -0700780 if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 (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:
785 bp->stats.rx_dropped++;
786 goto next_pkt;
787 }
788
789 if (len == 0) {
790 int i = 0;
791
792 do {
793 udelay(2);
794 barrier();
Al Viroa7bed272007-01-29 15:36:54 -0500795 len = le16_to_cpu(rh->len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 } while (len == 0 && i++ < 5);
797 if (len == 0)
798 goto drop_it;
799 }
800
801 /* Omit CRC. */
802 len -= 4;
803
804 if (len > RX_COPY_THRESHOLD) {
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;
Michael Buesch753f4922007-09-19 14:20:30 -0700809 dma_unmap_single(bp->sdev->dev, map,
810 skb_size, DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 /* Leave out rx_header */
Stephen Hemminger72f48612007-06-04 13:25:39 -0700812 skb_put(skb, len + RX_PKT_OFFSET);
813 skb_pull(skb, RX_PKT_OFFSET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 } 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 skb_reserve(copy_skb, 2);
823 skb_put(copy_skb, len);
824 /* DMA sync done above, copy just the actual packet */
Stephen Hemminger72f48612007-06-04 13:25:39 -0700825 skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET,
Arnaldo Carvalho de Melod626f622007-03-27 18:55:52 -0300826 copy_skb->data, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 skb = copy_skb;
828 }
829 skb->ip_summed = CHECKSUM_NONE;
830 skb->protocol = eth_type_trans(skb, bp->dev);
831 netif_receive_skb(skb);
832 bp->dev->last_rx = jiffies;
833 received++;
834 budget--;
835 next_pkt:
836 bp->rx_prod = (bp->rx_prod + 1) &
837 (B44_RX_RING_SIZE - 1);
838 cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
839 }
840
841 bp->rx_cons = cons;
842 bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
843
844 return received;
845}
846
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700847static int b44_poll(struct napi_struct *napi, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848{
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700849 struct b44 *bp = container_of(napi, struct b44, napi);
850 struct net_device *netdev = bp->dev;
851 int work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852
853 spin_lock_irq(&bp->lock);
854
855 if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
856 /* spin_lock(&bp->tx_lock); */
857 b44_tx(bp);
858 /* spin_unlock(&bp->tx_lock); */
859 }
860 spin_unlock_irq(&bp->lock);
861
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700862 work_done = 0;
863 if (bp->istat & ISTAT_RX)
864 work_done += b44_rx(bp, budget);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865
866 if (bp->istat & ISTAT_ERRORS) {
Francois Romieud15e9c42006-12-17 23:03:15 +0100867 unsigned long flags;
868
869 spin_lock_irqsave(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870 b44_halt(bp);
871 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -0800872 b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873 netif_wake_queue(bp->dev);
Francois Romieud15e9c42006-12-17 23:03:15 +0100874 spin_unlock_irqrestore(&bp->lock, flags);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700875 work_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 }
877
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700878 if (work_done < budget) {
879 netif_rx_complete(netdev, napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880 b44_enable_ints(bp);
881 }
882
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700883 return work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884}
885
David Howells7d12e782006-10-05 14:55:46 +0100886static irqreturn_t b44_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887{
888 struct net_device *dev = dev_id;
889 struct b44 *bp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 u32 istat, imask;
891 int handled = 0;
892
Francois Romieu65b984f2005-11-07 01:52:06 +0100893 spin_lock(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894
895 istat = br32(bp, B44_ISTAT);
896 imask = br32(bp, B44_IMASK);
897
Johannes Berge78181f2006-11-06 23:17:20 +0100898 /* The interrupt mask register controls which interrupt bits
899 * will actually raise an interrupt to the CPU when set by hw/firmware,
900 * but doesn't mask off the bits.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901 */
902 istat &= imask;
903 if (istat) {
904 handled = 1;
Francois Romieuba5eec92005-11-08 23:37:12 +0100905
906 if (unlikely(!netif_running(dev))) {
907 printk(KERN_INFO "%s: late interrupt.\n", dev->name);
908 goto irq_ack;
909 }
910
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700911 if (netif_rx_schedule_prep(dev, &bp->napi)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 /* NOTE: These writes are posted by the readback of
913 * the ISTAT register below.
914 */
915 bp->istat = istat;
916 __b44_disable_ints(bp);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700917 __netif_rx_schedule(dev, &bp->napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918 } else {
919 printk(KERN_ERR PFX "%s: Error, poll already scheduled\n",
920 dev->name);
921 }
922
Francois Romieuba5eec92005-11-08 23:37:12 +0100923irq_ack:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 bw32(bp, B44_ISTAT, istat);
925 br32(bp, B44_ISTAT);
926 }
Francois Romieu65b984f2005-11-07 01:52:06 +0100927 spin_unlock(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928 return IRQ_RETVAL(handled);
929}
930
931static void b44_tx_timeout(struct net_device *dev)
932{
933 struct b44 *bp = netdev_priv(dev);
934
935 printk(KERN_ERR PFX "%s: transmit timed out, resetting\n",
936 dev->name);
937
938 spin_lock_irq(&bp->lock);
939
940 b44_halt(bp);
941 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -0800942 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943
944 spin_unlock_irq(&bp->lock);
945
946 b44_enable_ints(bp);
947
948 netif_wake_queue(dev);
949}
950
951static int b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
952{
953 struct b44 *bp = netdev_priv(dev);
Francois Romieuc7193692005-11-07 01:50:03 +0100954 int rc = NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955 dma_addr_t mapping;
956 u32 len, entry, ctrl;
957
958 len = skb->len;
959 spin_lock_irq(&bp->lock);
960
961 /* This is a hard error, log it. */
962 if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
963 netif_stop_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
965 dev->name);
Francois Romieuc7193692005-11-07 01:50:03 +0100966 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 }
968
Michael Buesch753f4922007-09-19 14:20:30 -0700969 mapping = dma_map_single(bp->sdev->dev, skb->data, len, DMA_TO_DEVICE);
Gary Zambrano97db9ee72007-02-16 13:27:23 -0800970 if (dma_mapping_error(mapping) || mapping + len > DMA_30BIT_MASK) {
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700971 struct sk_buff *bounce_skb;
972
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 /* Chip can't handle DMA to/from >1GB, use bounce buffer */
Andi Kleen639b4212006-05-15 18:19:35 +0200974 if (!dma_mapping_error(mapping))
Michael Buesch753f4922007-09-19 14:20:30 -0700975 dma_unmap_single(bp->sdev->dev, mapping, len,
976 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700978 bounce_skb = __dev_alloc_skb(len, GFP_ATOMIC | GFP_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979 if (!bounce_skb)
Francois Romieuc7193692005-11-07 01:50:03 +0100980 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981
Michael Buesch753f4922007-09-19 14:20:30 -0700982 mapping = dma_map_single(bp->sdev->dev, bounce_skb->data,
983 len, DMA_TO_DEVICE);
Gary Zambrano97db9ee72007-02-16 13:27:23 -0800984 if (dma_mapping_error(mapping) || mapping + len > DMA_30BIT_MASK) {
Andi Kleen639b4212006-05-15 18:19:35 +0200985 if (!dma_mapping_error(mapping))
Michael Buesch753f4922007-09-19 14:20:30 -0700986 dma_unmap_single(bp->sdev->dev, mapping,
987 len, DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988 dev_kfree_skb_any(bounce_skb);
Francois Romieuc7193692005-11-07 01:50:03 +0100989 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990 }
991
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700992 skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700993 dev_kfree_skb_any(skb);
994 skb = bounce_skb;
995 }
996
997 entry = bp->tx_prod;
998 bp->tx_buffers[entry].skb = skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700999 bp->tx_buffers[entry].mapping = mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000
1001 ctrl = (len & DESC_CTRL_LEN);
1002 ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
1003 if (entry == (B44_TX_RING_SIZE - 1))
1004 ctrl |= DESC_CTRL_EOT;
1005
1006 bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
1007 bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
1008
John W. Linville9f38c632005-10-18 21:30:59 -04001009 if (bp->flags & B44_FLAG_TX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -07001010 b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma,
1011 entry * sizeof(bp->tx_ring[0]),
1012 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001013
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014 entry = NEXT_TX(entry);
1015
1016 bp->tx_prod = entry;
1017
1018 wmb();
1019
1020 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1021 if (bp->flags & B44_FLAG_BUGGY_TXPTR)
1022 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1023 if (bp->flags & B44_FLAG_REORDER_BUG)
1024 br32(bp, B44_DMATX_PTR);
1025
1026 if (TX_BUFFS_AVAIL(bp) < 1)
1027 netif_stop_queue(dev);
1028
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029 dev->trans_start = jiffies;
1030
Francois Romieuc7193692005-11-07 01:50:03 +01001031out_unlock:
1032 spin_unlock_irq(&bp->lock);
1033
1034 return rc;
1035
1036err_out:
1037 rc = NETDEV_TX_BUSY;
1038 goto out_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039}
1040
1041static int b44_change_mtu(struct net_device *dev, int new_mtu)
1042{
1043 struct b44 *bp = netdev_priv(dev);
1044
1045 if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU)
1046 return -EINVAL;
1047
1048 if (!netif_running(dev)) {
1049 /* We'll just catch it later when the
1050 * device is up'd.
1051 */
1052 dev->mtu = new_mtu;
1053 return 0;
1054 }
1055
1056 spin_lock_irq(&bp->lock);
1057 b44_halt(bp);
1058 dev->mtu = new_mtu;
1059 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001060 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061 spin_unlock_irq(&bp->lock);
1062
1063 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001064
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065 return 0;
1066}
1067
1068/* Free up pending packets in all rx/tx rings.
1069 *
1070 * The chip has been shut down and the driver detached from
1071 * the networking, so no interrupts or new tx packets will
1072 * end up in the driver. bp->lock is not held and we are not
1073 * in an interrupt context and thus may sleep.
1074 */
1075static void b44_free_rings(struct b44 *bp)
1076{
1077 struct ring_info *rp;
1078 int i;
1079
1080 for (i = 0; i < B44_RX_RING_SIZE; i++) {
1081 rp = &bp->rx_buffers[i];
1082
1083 if (rp->skb == NULL)
1084 continue;
Michael Buesch753f4922007-09-19 14:20:30 -07001085 dma_unmap_single(bp->sdev->dev, rp->mapping, RX_PKT_BUF_SZ,
1086 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087 dev_kfree_skb_any(rp->skb);
1088 rp->skb = NULL;
1089 }
1090
1091 /* XXX needs changes once NETIF_F_SG is set... */
1092 for (i = 0; i < B44_TX_RING_SIZE; i++) {
1093 rp = &bp->tx_buffers[i];
1094
1095 if (rp->skb == NULL)
1096 continue;
Michael Buesch753f4922007-09-19 14:20:30 -07001097 dma_unmap_single(bp->sdev->dev, rp->mapping, rp->skb->len,
1098 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099 dev_kfree_skb_any(rp->skb);
1100 rp->skb = NULL;
1101 }
1102}
1103
1104/* Initialize tx/rx rings for packet processing.
1105 *
1106 * The chip has been shut down and the driver detached from
1107 * the networking, so no interrupts or new tx packets will
Francois Romieu874a6212005-11-07 01:50:46 +01001108 * end up in the driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 */
1110static void b44_init_rings(struct b44 *bp)
1111{
1112 int i;
1113
1114 b44_free_rings(bp);
1115
1116 memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
1117 memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
1118
John W. Linville9f38c632005-10-18 21:30:59 -04001119 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -07001120 dma_sync_single_for_device(bp->sdev->dev, bp->rx_ring_dma,
1121 DMA_TABLE_BYTES,
1122 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001123
1124 if (bp->flags & B44_FLAG_TX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -07001125 dma_sync_single_for_device(bp->sdev->dev, bp->tx_ring_dma,
1126 DMA_TABLE_BYTES,
1127 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001128
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 for (i = 0; i < bp->rx_pending; i++) {
1130 if (b44_alloc_rx_skb(bp, -1, i) < 0)
1131 break;
1132 }
1133}
1134
1135/*
1136 * Must not be invoked with interrupt sources disabled and
1137 * the hardware shutdown down.
1138 */
1139static void b44_free_consistent(struct b44 *bp)
1140{
Jesper Juhlb4558ea2005-10-28 16:53:13 -04001141 kfree(bp->rx_buffers);
1142 bp->rx_buffers = NULL;
1143 kfree(bp->tx_buffers);
1144 bp->tx_buffers = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145 if (bp->rx_ring) {
John W. Linville9f38c632005-10-18 21:30:59 -04001146 if (bp->flags & B44_FLAG_RX_RING_HACK) {
Michael Buesch753f4922007-09-19 14:20:30 -07001147 dma_unmap_single(bp->sdev->dev, bp->rx_ring_dma,
1148 DMA_TABLE_BYTES,
1149 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001150 kfree(bp->rx_ring);
1151 } else
Michael Buesch753f4922007-09-19 14:20:30 -07001152 dma_free_coherent(bp->sdev->dev, DMA_TABLE_BYTES,
John W. Linville9f38c632005-10-18 21:30:59 -04001153 bp->rx_ring, bp->rx_ring_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154 bp->rx_ring = NULL;
John W. Linville9f38c632005-10-18 21:30:59 -04001155 bp->flags &= ~B44_FLAG_RX_RING_HACK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156 }
1157 if (bp->tx_ring) {
John W. Linville9f38c632005-10-18 21:30:59 -04001158 if (bp->flags & B44_FLAG_TX_RING_HACK) {
Michael Buesch753f4922007-09-19 14:20:30 -07001159 dma_unmap_single(bp->sdev->dev, bp->tx_ring_dma,
1160 DMA_TABLE_BYTES,
1161 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001162 kfree(bp->tx_ring);
1163 } else
Michael Buesch753f4922007-09-19 14:20:30 -07001164 dma_free_coherent(bp->sdev->dev, DMA_TABLE_BYTES,
John W. Linville9f38c632005-10-18 21:30:59 -04001165 bp->tx_ring, bp->tx_ring_dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166 bp->tx_ring = NULL;
John W. Linville9f38c632005-10-18 21:30:59 -04001167 bp->flags &= ~B44_FLAG_TX_RING_HACK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001168 }
1169}
1170
1171/*
1172 * Must not be invoked with interrupt sources disabled and
1173 * the hardware shutdown down. Can sleep.
1174 */
Michael Buesch753f4922007-09-19 14:20:30 -07001175static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176{
1177 int size;
1178
1179 size = B44_RX_RING_SIZE * sizeof(struct ring_info);
Michael Buesch753f4922007-09-19 14:20:30 -07001180 bp->rx_buffers = kzalloc(size, gfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001181 if (!bp->rx_buffers)
1182 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001183
1184 size = B44_TX_RING_SIZE * sizeof(struct ring_info);
Michael Buesch753f4922007-09-19 14:20:30 -07001185 bp->tx_buffers = kzalloc(size, gfp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001186 if (!bp->tx_buffers)
1187 goto out_err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188
1189 size = DMA_TABLE_BYTES;
Michael Buesch753f4922007-09-19 14:20:30 -07001190 bp->rx_ring = dma_alloc_coherent(bp->sdev->dev, size, &bp->rx_ring_dma, gfp);
John W. Linville9f38c632005-10-18 21:30:59 -04001191 if (!bp->rx_ring) {
1192 /* Allocation may have failed due to pci_alloc_consistent
1193 insisting on use of GFP_DMA, which is more restrictive
1194 than necessary... */
1195 struct dma_desc *rx_ring;
1196 dma_addr_t rx_ring_dma;
1197
Michael Buesch753f4922007-09-19 14:20:30 -07001198 rx_ring = kzalloc(size, gfp);
Francois Romieu874a6212005-11-07 01:50:46 +01001199 if (!rx_ring)
John W. Linville9f38c632005-10-18 21:30:59 -04001200 goto out_err;
1201
Michael Buesch753f4922007-09-19 14:20:30 -07001202 rx_ring_dma = dma_map_single(bp->sdev->dev, rx_ring,
1203 DMA_TABLE_BYTES,
1204 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001205
Andi Kleen639b4212006-05-15 18:19:35 +02001206 if (dma_mapping_error(rx_ring_dma) ||
Gary Zambrano97db9ee72007-02-16 13:27:23 -08001207 rx_ring_dma + size > DMA_30BIT_MASK) {
John W. Linville9f38c632005-10-18 21:30:59 -04001208 kfree(rx_ring);
1209 goto out_err;
1210 }
1211
1212 bp->rx_ring = rx_ring;
1213 bp->rx_ring_dma = rx_ring_dma;
1214 bp->flags |= B44_FLAG_RX_RING_HACK;
1215 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216
Michael Buesch753f4922007-09-19 14:20:30 -07001217 bp->tx_ring = dma_alloc_coherent(bp->sdev->dev, size, &bp->tx_ring_dma, gfp);
John W. Linville9f38c632005-10-18 21:30:59 -04001218 if (!bp->tx_ring) {
Michael Buesch753f4922007-09-19 14:20:30 -07001219 /* Allocation may have failed due to dma_alloc_coherent
John W. Linville9f38c632005-10-18 21:30:59 -04001220 insisting on use of GFP_DMA, which is more restrictive
1221 than necessary... */
1222 struct dma_desc *tx_ring;
1223 dma_addr_t tx_ring_dma;
1224
Michael Buesch753f4922007-09-19 14:20:30 -07001225 tx_ring = kzalloc(size, gfp);
Francois Romieu874a6212005-11-07 01:50:46 +01001226 if (!tx_ring)
John W. Linville9f38c632005-10-18 21:30:59 -04001227 goto out_err;
1228
Michael Buesch753f4922007-09-19 14:20:30 -07001229 tx_ring_dma = dma_map_single(bp->sdev->dev, tx_ring,
1230 DMA_TABLE_BYTES,
1231 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001232
Andi Kleen639b4212006-05-15 18:19:35 +02001233 if (dma_mapping_error(tx_ring_dma) ||
Gary Zambrano97db9ee72007-02-16 13:27:23 -08001234 tx_ring_dma + size > DMA_30BIT_MASK) {
John W. Linville9f38c632005-10-18 21:30:59 -04001235 kfree(tx_ring);
1236 goto out_err;
1237 }
1238
1239 bp->tx_ring = tx_ring;
1240 bp->tx_ring_dma = tx_ring_dma;
1241 bp->flags |= B44_FLAG_TX_RING_HACK;
1242 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243
1244 return 0;
1245
1246out_err:
1247 b44_free_consistent(bp);
1248 return -ENOMEM;
1249}
1250
1251/* bp->lock is held. */
1252static void b44_clear_stats(struct b44 *bp)
1253{
1254 unsigned long reg;
1255
1256 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
1257 for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL)
1258 br32(bp, reg);
1259 for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL)
1260 br32(bp, reg);
1261}
1262
1263/* bp->lock is held. */
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001264static void b44_chip_reset(struct b44 *bp, int reset_kind)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265{
Michael Buesch753f4922007-09-19 14:20:30 -07001266 struct ssb_device *sdev = bp->sdev;
1267
1268 if (ssb_device_is_enabled(bp->sdev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 bw32(bp, B44_RCV_LAZY, 0);
1270 bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
Gary Zambrano40ee8c72007-02-16 13:27:27 -08001271 b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 bw32(bp, B44_DMATX_CTRL, 0);
1273 bp->tx_prod = bp->tx_cons = 0;
1274 if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
1275 b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
1276 100, 0);
1277 }
1278 bw32(bp, B44_DMARX_CTRL, 0);
1279 bp->rx_prod = bp->rx_cons = 0;
Michael Buesch753f4922007-09-19 14:20:30 -07001280 } else
1281 ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001282
Michael Buesch753f4922007-09-19 14:20:30 -07001283 ssb_device_enable(bp->sdev, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284 b44_clear_stats(bp);
1285
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001286 /*
1287 * Don't enable PHY if we are doing a partial reset
1288 * we are probably going to power down
1289 */
1290 if (reset_kind == B44_CHIP_RESET_PARTIAL)
1291 return;
1292
Michael Buesch753f4922007-09-19 14:20:30 -07001293 switch (sdev->bus->bustype) {
1294 case SSB_BUSTYPE_SSB:
1295 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1296 (((ssb_clockspeed(sdev->bus) + (B44_MDC_RATIO / 2)) / B44_MDC_RATIO)
1297 & MDIO_CTRL_MAXF_MASK)));
1298 break;
1299 case SSB_BUSTYPE_PCI:
1300 case SSB_BUSTYPE_PCMCIA:
1301 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1302 (0x0d & MDIO_CTRL_MAXF_MASK)));
1303 break;
1304 }
1305
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306 br32(bp, B44_MDIO_CTRL);
1307
1308 if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
1309 bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
1310 br32(bp, B44_ENET_CTRL);
1311 bp->flags &= ~B44_FLAG_INTERNAL_PHY;
1312 } else {
1313 u32 val = br32(bp, B44_DEVCTRL);
1314
1315 if (val & DEVCTRL_EPR) {
1316 bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
1317 br32(bp, B44_DEVCTRL);
1318 udelay(100);
1319 }
1320 bp->flags |= B44_FLAG_INTERNAL_PHY;
1321 }
1322}
1323
1324/* bp->lock is held. */
1325static void b44_halt(struct b44 *bp)
1326{
1327 b44_disable_ints(bp);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001328 /* reset PHY */
1329 b44_phy_reset(bp);
1330 /* power down PHY */
1331 printk(KERN_INFO PFX "%s: powering down PHY\n", bp->dev->name);
1332 bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
1333 /* now reset the chip, but without enabling the MAC&PHY
1334 * part of it. This has to be done _after_ we shut down the PHY */
1335 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336}
1337
1338/* bp->lock is held. */
1339static void __b44_set_mac_addr(struct b44 *bp)
1340{
1341 bw32(bp, B44_CAM_CTRL, 0);
1342 if (!(bp->dev->flags & IFF_PROMISC)) {
1343 u32 val;
1344
1345 __b44_cam_write(bp, bp->dev->dev_addr, 0);
1346 val = br32(bp, B44_CAM_CTRL);
1347 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1348 }
1349}
1350
1351static int b44_set_mac_addr(struct net_device *dev, void *p)
1352{
1353 struct b44 *bp = netdev_priv(dev);
1354 struct sockaddr *addr = p;
Michael Buesch753f4922007-09-19 14:20:30 -07001355 u32 val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356
1357 if (netif_running(dev))
1358 return -EBUSY;
1359
Gary Zambrano391fc092006-03-28 14:57:38 -08001360 if (!is_valid_ether_addr(addr->sa_data))
1361 return -EINVAL;
1362
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1364
1365 spin_lock_irq(&bp->lock);
Michael Buesch753f4922007-09-19 14:20:30 -07001366
1367 val = br32(bp, B44_RXCONFIG);
1368 if (!(val & RXCONFIG_CAM_ABSENT))
1369 __b44_set_mac_addr(bp);
1370
Linus Torvalds1da177e2005-04-16 15:20:36 -07001371 spin_unlock_irq(&bp->lock);
1372
1373 return 0;
1374}
1375
1376/* Called at device open time to get the chip ready for
1377 * packet processing. Invoked with bp->lock held.
1378 */
1379static void __b44_set_rx_mode(struct net_device *);
Michael Chan5fc7d612007-01-26 23:59:57 -08001380static void b44_init_hw(struct b44 *bp, int reset_kind)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381{
1382 u32 val;
1383
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001384 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
Michael Chan5fc7d612007-01-26 23:59:57 -08001385 if (reset_kind == B44_FULL_RESET) {
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001386 b44_phy_reset(bp);
1387 b44_setup_phy(bp);
1388 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389
1390 /* Enable CRC32, set proper LED modes and power on PHY */
1391 bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
1392 bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
1393
1394 /* This sets the MAC address too. */
1395 __b44_set_rx_mode(bp->dev);
1396
1397 /* MTU + eth header + possible VLAN tag + struct rx_header */
1398 bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1399 bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1400
1401 bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
Michael Chan5fc7d612007-01-26 23:59:57 -08001402 if (reset_kind == B44_PARTIAL_RESET) {
1403 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
Stephen Hemminger72f48612007-06-04 13:25:39 -07001404 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
Michael Chan5fc7d612007-01-26 23:59:57 -08001405 } else {
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001406 bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
1407 bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
1408 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
Stephen Hemminger72f48612007-06-04 13:25:39 -07001409 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001410 bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001412 bw32(bp, B44_DMARX_PTR, bp->rx_pending);
1413 bp->rx_prod = bp->rx_pending;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001414
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001415 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001416 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001417
1418 val = br32(bp, B44_ENET_CTRL);
1419 bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
1420}
1421
1422static int b44_open(struct net_device *dev)
1423{
1424 struct b44 *bp = netdev_priv(dev);
1425 int err;
1426
Michael Buesch753f4922007-09-19 14:20:30 -07001427 err = b44_alloc_consistent(bp, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 if (err)
Francois Romieu6c2f4262005-11-07 01:52:57 +01001429 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001430
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001431 napi_enable(&bp->napi);
1432
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001434 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001435
John W. Linvillee254e9b2005-06-08 15:11:57 -04001436 b44_check_phy(bp);
1437
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001438 err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001439 if (unlikely(err < 0)) {
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001440 napi_disable(&bp->napi);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001441 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001442 b44_free_rings(bp);
1443 b44_free_consistent(bp);
1444 goto out;
1445 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001446
1447 init_timer(&bp->timer);
1448 bp->timer.expires = jiffies + HZ;
1449 bp->timer.data = (unsigned long) bp;
1450 bp->timer.function = b44_timer;
1451 add_timer(&bp->timer);
1452
1453 b44_enable_ints(bp);
Mark Lordd9e2d182005-11-30 22:30:23 +01001454 netif_start_queue(dev);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001455out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456 return err;
1457}
1458
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459#ifdef CONFIG_NET_POLL_CONTROLLER
1460/*
1461 * Polling receive - used by netconsole and other diagnostic tools
1462 * to allow network i/o with interrupts disabled.
1463 */
1464static void b44_poll_controller(struct net_device *dev)
1465{
1466 disable_irq(dev->irq);
David Howells7d12e782006-10-05 14:55:46 +01001467 b44_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001468 enable_irq(dev->irq);
1469}
1470#endif
1471
Gary Zambrano725ad802006-06-20 15:34:36 -07001472static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset)
1473{
1474 u32 i;
1475 u32 *pattern = (u32 *) pp;
1476
1477 for (i = 0; i < bytes; i += sizeof(u32)) {
1478 bw32(bp, B44_FILT_ADDR, table_offset + i);
1479 bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]);
1480 }
1481}
1482
1483static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset)
1484{
1485 int magicsync = 6;
1486 int k, j, len = offset;
1487 int ethaddr_bytes = ETH_ALEN;
1488
1489 memset(ppattern + offset, 0xff, magicsync);
1490 for (j = 0; j < magicsync; j++)
1491 set_bit(len++, (unsigned long *) pmask);
1492
1493 for (j = 0; j < B44_MAX_PATTERNS; j++) {
1494 if ((B44_PATTERN_SIZE - len) >= ETH_ALEN)
1495 ethaddr_bytes = ETH_ALEN;
1496 else
1497 ethaddr_bytes = B44_PATTERN_SIZE - len;
1498 if (ethaddr_bytes <=0)
1499 break;
1500 for (k = 0; k< ethaddr_bytes; k++) {
1501 ppattern[offset + magicsync +
1502 (j * ETH_ALEN) + k] = macaddr[k];
1503 len++;
1504 set_bit(len, (unsigned long *) pmask);
1505 }
1506 }
1507 return len - 1;
1508}
1509
1510/* Setup magic packet patterns in the b44 WOL
1511 * pattern matching filter.
1512 */
1513static void b44_setup_pseudo_magicp(struct b44 *bp)
1514{
1515
1516 u32 val;
1517 int plen0, plen1, plen2;
1518 u8 *pwol_pattern;
1519 u8 pwol_mask[B44_PMASK_SIZE];
1520
Yoann Padioleaudd00cc42007-07-19 01:49:03 -07001521 pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
Gary Zambrano725ad802006-06-20 15:34:36 -07001522 if (!pwol_pattern) {
1523 printk(KERN_ERR PFX "Memory not available for WOL\n");
1524 return;
1525 }
1526
1527 /* Ipv4 magic packet pattern - pattern 0.*/
Gary Zambrano725ad802006-06-20 15:34:36 -07001528 memset(pwol_mask, 0, B44_PMASK_SIZE);
1529 plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1530 B44_ETHIPV4UDP_HLEN);
1531
1532 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE);
1533 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE);
1534
1535 /* Raw ethernet II magic packet pattern - pattern 1 */
1536 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1537 memset(pwol_mask, 0, B44_PMASK_SIZE);
1538 plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1539 ETH_HLEN);
1540
1541 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1542 B44_PATTERN_BASE + B44_PATTERN_SIZE);
1543 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1544 B44_PMASK_BASE + B44_PMASK_SIZE);
1545
1546 /* Ipv6 magic packet pattern - pattern 2 */
1547 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1548 memset(pwol_mask, 0, B44_PMASK_SIZE);
1549 plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1550 B44_ETHIPV6UDP_HLEN);
1551
1552 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1553 B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE);
1554 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1555 B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE);
1556
1557 kfree(pwol_pattern);
1558
1559 /* set these pattern's lengths: one less than each real length */
1560 val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE;
1561 bw32(bp, B44_WKUP_LEN, val);
1562
1563 /* enable wakeup pattern matching */
1564 val = br32(bp, B44_DEVCTRL);
1565 bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE);
1566
1567}
Gary Zambrano52cafd92006-06-20 15:34:23 -07001568
Michael Buesch753f4922007-09-19 14:20:30 -07001569#ifdef CONFIG_B44_PCI
1570static void b44_setup_wol_pci(struct b44 *bp)
1571{
1572 u16 val;
1573
1574 if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) {
1575 bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE);
1576 pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val);
1577 pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE);
1578 }
1579}
1580#else
1581static inline void b44_setup_wol_pci(struct b44 *bp) { }
1582#endif /* CONFIG_B44_PCI */
1583
Gary Zambrano52cafd92006-06-20 15:34:23 -07001584static void b44_setup_wol(struct b44 *bp)
1585{
1586 u32 val;
Gary Zambrano52cafd92006-06-20 15:34:23 -07001587
1588 bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
1589
1590 if (bp->flags & B44_FLAG_B0_ANDLATER) {
1591
1592 bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
1593
1594 val = bp->dev->dev_addr[2] << 24 |
1595 bp->dev->dev_addr[3] << 16 |
1596 bp->dev->dev_addr[4] << 8 |
1597 bp->dev->dev_addr[5];
1598 bw32(bp, B44_ADDR_LO, val);
1599
1600 val = bp->dev->dev_addr[0] << 8 |
1601 bp->dev->dev_addr[1];
1602 bw32(bp, B44_ADDR_HI, val);
1603
1604 val = br32(bp, B44_DEVCTRL);
1605 bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
1606
Gary Zambrano725ad802006-06-20 15:34:36 -07001607 } else {
1608 b44_setup_pseudo_magicp(bp);
1609 }
Michael Buesch753f4922007-09-19 14:20:30 -07001610 b44_setup_wol_pci(bp);
Gary Zambrano52cafd92006-06-20 15:34:23 -07001611}
1612
Linus Torvalds1da177e2005-04-16 15:20:36 -07001613static int b44_close(struct net_device *dev)
1614{
1615 struct b44 *bp = netdev_priv(dev);
1616
1617 netif_stop_queue(dev);
1618
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001619 napi_disable(&bp->napi);
Francois Romieuba5eec92005-11-08 23:37:12 +01001620
Linus Torvalds1da177e2005-04-16 15:20:36 -07001621 del_timer_sync(&bp->timer);
1622
1623 spin_lock_irq(&bp->lock);
1624
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625 b44_halt(bp);
1626 b44_free_rings(bp);
Stephen Hemmingerc35ca392006-01-20 21:13:17 -08001627 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001628
1629 spin_unlock_irq(&bp->lock);
1630
1631 free_irq(dev->irq, dev);
1632
Gary Zambrano52cafd92006-06-20 15:34:23 -07001633 if (bp->flags & B44_FLAG_WOL_ENABLE) {
Michael Chan5fc7d612007-01-26 23:59:57 -08001634 b44_init_hw(bp, B44_PARTIAL_RESET);
Gary Zambrano52cafd92006-06-20 15:34:23 -07001635 b44_setup_wol(bp);
1636 }
1637
Linus Torvalds1da177e2005-04-16 15:20:36 -07001638 b44_free_consistent(bp);
1639
1640 return 0;
1641}
1642
1643static struct net_device_stats *b44_get_stats(struct net_device *dev)
1644{
1645 struct b44 *bp = netdev_priv(dev);
1646 struct net_device_stats *nstat = &bp->stats;
1647 struct b44_hw_stats *hwstat = &bp->hw_stats;
1648
1649 /* Convert HW stats into netdevice stats. */
1650 nstat->rx_packets = hwstat->rx_pkts;
1651 nstat->tx_packets = hwstat->tx_pkts;
1652 nstat->rx_bytes = hwstat->rx_octets;
1653 nstat->tx_bytes = hwstat->tx_octets;
1654 nstat->tx_errors = (hwstat->tx_jabber_pkts +
1655 hwstat->tx_oversize_pkts +
1656 hwstat->tx_underruns +
1657 hwstat->tx_excessive_cols +
1658 hwstat->tx_late_cols);
1659 nstat->multicast = hwstat->tx_multicast_pkts;
1660 nstat->collisions = hwstat->tx_total_cols;
1661
1662 nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
1663 hwstat->rx_undersize);
1664 nstat->rx_over_errors = hwstat->rx_missed_pkts;
1665 nstat->rx_frame_errors = hwstat->rx_align_errs;
1666 nstat->rx_crc_errors = hwstat->rx_crc_errs;
1667 nstat->rx_errors = (hwstat->rx_jabber_pkts +
1668 hwstat->rx_oversize_pkts +
1669 hwstat->rx_missed_pkts +
1670 hwstat->rx_crc_align_errs +
1671 hwstat->rx_undersize +
1672 hwstat->rx_crc_errs +
1673 hwstat->rx_align_errs +
1674 hwstat->rx_symbol_errs);
1675
1676 nstat->tx_aborted_errors = hwstat->tx_underruns;
1677#if 0
1678 /* Carrier lost counter seems to be broken for some devices */
1679 nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
1680#endif
1681
1682 return nstat;
1683}
1684
1685static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
1686{
1687 struct dev_mc_list *mclist;
1688 int i, num_ents;
1689
1690 num_ents = min_t(int, dev->mc_count, B44_MCAST_TABLE_SIZE);
1691 mclist = dev->mc_list;
1692 for (i = 0; mclist && i < num_ents; i++, mclist = mclist->next) {
1693 __b44_cam_write(bp, mclist->dmi_addr, i + 1);
1694 }
1695 return i+1;
1696}
1697
1698static void __b44_set_rx_mode(struct net_device *dev)
1699{
1700 struct b44 *bp = netdev_priv(dev);
1701 u32 val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001702
1703 val = br32(bp, B44_RXCONFIG);
1704 val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
Michael Buesch753f4922007-09-19 14:20:30 -07001705 if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706 val |= RXCONFIG_PROMISC;
1707 bw32(bp, B44_RXCONFIG, val);
1708 } else {
Francois Romieu874a6212005-11-07 01:50:46 +01001709 unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
Bill Helfinstinecda22aa2007-04-01 13:10:28 -04001710 int i = 1;
Francois Romieu874a6212005-11-07 01:50:46 +01001711
Linus Torvalds1da177e2005-04-16 15:20:36 -07001712 __b44_set_mac_addr(bp);
1713
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001714 if ((dev->flags & IFF_ALLMULTI) ||
1715 (dev->mc_count > B44_MCAST_TABLE_SIZE))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001716 val |= RXCONFIG_ALLMULTI;
1717 else
Francois Romieu874a6212005-11-07 01:50:46 +01001718 i = __b44_load_mcast(bp, dev);
Jeff Garzik10badc22006-04-12 18:04:32 -04001719
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001720 for (; i < 64; i++)
Jeff Garzik10badc22006-04-12 18:04:32 -04001721 __b44_cam_write(bp, zero, i);
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001722
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723 bw32(bp, B44_RXCONFIG, val);
1724 val = br32(bp, B44_CAM_CTRL);
1725 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1726 }
1727}
1728
1729static void b44_set_rx_mode(struct net_device *dev)
1730{
1731 struct b44 *bp = netdev_priv(dev);
1732
1733 spin_lock_irq(&bp->lock);
1734 __b44_set_rx_mode(dev);
1735 spin_unlock_irq(&bp->lock);
1736}
1737
1738static u32 b44_get_msglevel(struct net_device *dev)
1739{
1740 struct b44 *bp = netdev_priv(dev);
1741 return bp->msg_enable;
1742}
1743
1744static void b44_set_msglevel(struct net_device *dev, u32 value)
1745{
1746 struct b44 *bp = netdev_priv(dev);
1747 bp->msg_enable = value;
1748}
1749
1750static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1751{
1752 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07001753 struct ssb_bus *bus = bp->sdev->bus;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754
Michael Buesch753f4922007-09-19 14:20:30 -07001755 strncpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
1756 strncpy(info->version, DRV_MODULE_VERSION, sizeof(info->driver));
1757 switch (bus->bustype) {
1758 case SSB_BUSTYPE_PCI:
1759 strncpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info));
1760 break;
1761 case SSB_BUSTYPE_PCMCIA:
1762 case SSB_BUSTYPE_SSB:
1763 strncpy(info->bus_info, "SSB", sizeof(info->bus_info));
1764 break;
1765 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766}
1767
1768static int b44_nway_reset(struct net_device *dev)
1769{
1770 struct b44 *bp = netdev_priv(dev);
1771 u32 bmcr;
1772 int r;
1773
1774 spin_lock_irq(&bp->lock);
1775 b44_readphy(bp, MII_BMCR, &bmcr);
1776 b44_readphy(bp, MII_BMCR, &bmcr);
1777 r = -EINVAL;
1778 if (bmcr & BMCR_ANENABLE) {
1779 b44_writephy(bp, MII_BMCR,
1780 bmcr | BMCR_ANRESTART);
1781 r = 0;
1782 }
1783 spin_unlock_irq(&bp->lock);
1784
1785 return r;
1786}
1787
1788static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1789{
1790 struct b44 *bp = netdev_priv(dev);
1791
Linus Torvalds1da177e2005-04-16 15:20:36 -07001792 cmd->supported = (SUPPORTED_Autoneg);
1793 cmd->supported |= (SUPPORTED_100baseT_Half |
1794 SUPPORTED_100baseT_Full |
1795 SUPPORTED_10baseT_Half |
1796 SUPPORTED_10baseT_Full |
1797 SUPPORTED_MII);
1798
1799 cmd->advertising = 0;
1800 if (bp->flags & B44_FLAG_ADV_10HALF)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001801 cmd->advertising |= ADVERTISED_10baseT_Half;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001802 if (bp->flags & B44_FLAG_ADV_10FULL)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001803 cmd->advertising |= ADVERTISED_10baseT_Full;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001804 if (bp->flags & B44_FLAG_ADV_100HALF)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001805 cmd->advertising |= ADVERTISED_100baseT_Half;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 if (bp->flags & B44_FLAG_ADV_100FULL)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001807 cmd->advertising |= ADVERTISED_100baseT_Full;
1808 cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001809 cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ?
1810 SPEED_100 : SPEED_10;
1811 cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
1812 DUPLEX_FULL : DUPLEX_HALF;
1813 cmd->port = 0;
1814 cmd->phy_address = bp->phy_addr;
1815 cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ?
1816 XCVR_INTERNAL : XCVR_EXTERNAL;
1817 cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
1818 AUTONEG_DISABLE : AUTONEG_ENABLE;
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001819 if (cmd->autoneg == AUTONEG_ENABLE)
1820 cmd->advertising |= ADVERTISED_Autoneg;
1821 if (!netif_running(dev)){
1822 cmd->speed = 0;
1823 cmd->duplex = 0xff;
1824 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001825 cmd->maxtxpkt = 0;
1826 cmd->maxrxpkt = 0;
1827 return 0;
1828}
1829
1830static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1831{
1832 struct b44 *bp = netdev_priv(dev);
1833
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834 /* We do not support gigabit. */
1835 if (cmd->autoneg == AUTONEG_ENABLE) {
1836 if (cmd->advertising &
1837 (ADVERTISED_1000baseT_Half |
1838 ADVERTISED_1000baseT_Full))
1839 return -EINVAL;
1840 } else if ((cmd->speed != SPEED_100 &&
1841 cmd->speed != SPEED_10) ||
1842 (cmd->duplex != DUPLEX_HALF &&
1843 cmd->duplex != DUPLEX_FULL)) {
1844 return -EINVAL;
1845 }
1846
1847 spin_lock_irq(&bp->lock);
1848
1849 if (cmd->autoneg == AUTONEG_ENABLE) {
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001850 bp->flags &= ~(B44_FLAG_FORCE_LINK |
1851 B44_FLAG_100_BASE_T |
1852 B44_FLAG_FULL_DUPLEX |
1853 B44_FLAG_ADV_10HALF |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001854 B44_FLAG_ADV_10FULL |
1855 B44_FLAG_ADV_100HALF |
1856 B44_FLAG_ADV_100FULL);
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001857 if (cmd->advertising == 0) {
1858 bp->flags |= (B44_FLAG_ADV_10HALF |
1859 B44_FLAG_ADV_10FULL |
1860 B44_FLAG_ADV_100HALF |
1861 B44_FLAG_ADV_100FULL);
1862 } else {
1863 if (cmd->advertising & ADVERTISED_10baseT_Half)
1864 bp->flags |= B44_FLAG_ADV_10HALF;
1865 if (cmd->advertising & ADVERTISED_10baseT_Full)
1866 bp->flags |= B44_FLAG_ADV_10FULL;
1867 if (cmd->advertising & ADVERTISED_100baseT_Half)
1868 bp->flags |= B44_FLAG_ADV_100HALF;
1869 if (cmd->advertising & ADVERTISED_100baseT_Full)
1870 bp->flags |= B44_FLAG_ADV_100FULL;
1871 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001872 } else {
1873 bp->flags |= B44_FLAG_FORCE_LINK;
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001874 bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001875 if (cmd->speed == SPEED_100)
1876 bp->flags |= B44_FLAG_100_BASE_T;
1877 if (cmd->duplex == DUPLEX_FULL)
1878 bp->flags |= B44_FLAG_FULL_DUPLEX;
1879 }
1880
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001881 if (netif_running(dev))
1882 b44_setup_phy(bp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883
1884 spin_unlock_irq(&bp->lock);
1885
1886 return 0;
1887}
1888
1889static void b44_get_ringparam(struct net_device *dev,
1890 struct ethtool_ringparam *ering)
1891{
1892 struct b44 *bp = netdev_priv(dev);
1893
1894 ering->rx_max_pending = B44_RX_RING_SIZE - 1;
1895 ering->rx_pending = bp->rx_pending;
1896
1897 /* XXX ethtool lacks a tx_max_pending, oops... */
1898}
1899
1900static int b44_set_ringparam(struct net_device *dev,
1901 struct ethtool_ringparam *ering)
1902{
1903 struct b44 *bp = netdev_priv(dev);
1904
1905 if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
1906 (ering->rx_mini_pending != 0) ||
1907 (ering->rx_jumbo_pending != 0) ||
1908 (ering->tx_pending > B44_TX_RING_SIZE - 1))
1909 return -EINVAL;
1910
1911 spin_lock_irq(&bp->lock);
1912
1913 bp->rx_pending = ering->rx_pending;
1914 bp->tx_pending = ering->tx_pending;
1915
1916 b44_halt(bp);
1917 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001918 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001919 netif_wake_queue(bp->dev);
1920 spin_unlock_irq(&bp->lock);
1921
1922 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001923
Linus Torvalds1da177e2005-04-16 15:20:36 -07001924 return 0;
1925}
1926
1927static void b44_get_pauseparam(struct net_device *dev,
1928 struct ethtool_pauseparam *epause)
1929{
1930 struct b44 *bp = netdev_priv(dev);
1931
1932 epause->autoneg =
1933 (bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
1934 epause->rx_pause =
1935 (bp->flags & B44_FLAG_RX_PAUSE) != 0;
1936 epause->tx_pause =
1937 (bp->flags & B44_FLAG_TX_PAUSE) != 0;
1938}
1939
1940static int b44_set_pauseparam(struct net_device *dev,
1941 struct ethtool_pauseparam *epause)
1942{
1943 struct b44 *bp = netdev_priv(dev);
1944
1945 spin_lock_irq(&bp->lock);
1946 if (epause->autoneg)
1947 bp->flags |= B44_FLAG_PAUSE_AUTO;
1948 else
1949 bp->flags &= ~B44_FLAG_PAUSE_AUTO;
1950 if (epause->rx_pause)
1951 bp->flags |= B44_FLAG_RX_PAUSE;
1952 else
1953 bp->flags &= ~B44_FLAG_RX_PAUSE;
1954 if (epause->tx_pause)
1955 bp->flags |= B44_FLAG_TX_PAUSE;
1956 else
1957 bp->flags &= ~B44_FLAG_TX_PAUSE;
1958 if (bp->flags & B44_FLAG_PAUSE_AUTO) {
1959 b44_halt(bp);
1960 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001961 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001962 } else {
1963 __b44_set_flow_ctrl(bp, bp->flags);
1964 }
1965 spin_unlock_irq(&bp->lock);
1966
1967 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001968
Linus Torvalds1da177e2005-04-16 15:20:36 -07001969 return 0;
1970}
1971
Francois Romieu33539302005-11-07 01:51:34 +01001972static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1973{
1974 switch(stringset) {
1975 case ETH_SS_STATS:
1976 memcpy(data, *b44_gstrings, sizeof(b44_gstrings));
1977 break;
1978 }
1979}
1980
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001981static int b44_get_sset_count(struct net_device *dev, int sset)
Francois Romieu33539302005-11-07 01:51:34 +01001982{
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001983 switch (sset) {
1984 case ETH_SS_STATS:
1985 return ARRAY_SIZE(b44_gstrings);
1986 default:
1987 return -EOPNOTSUPP;
1988 }
Francois Romieu33539302005-11-07 01:51:34 +01001989}
1990
1991static void b44_get_ethtool_stats(struct net_device *dev,
1992 struct ethtool_stats *stats, u64 *data)
1993{
1994 struct b44 *bp = netdev_priv(dev);
1995 u32 *val = &bp->hw_stats.tx_good_octets;
1996 u32 i;
1997
1998 spin_lock_irq(&bp->lock);
1999
2000 b44_stats_update(bp);
2001
2002 for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++)
2003 *data++ = *val++;
2004
2005 spin_unlock_irq(&bp->lock);
2006}
2007
Gary Zambrano52cafd92006-06-20 15:34:23 -07002008static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2009{
2010 struct b44 *bp = netdev_priv(dev);
2011
2012 wol->supported = WAKE_MAGIC;
2013 if (bp->flags & B44_FLAG_WOL_ENABLE)
2014 wol->wolopts = WAKE_MAGIC;
2015 else
2016 wol->wolopts = 0;
2017 memset(&wol->sopass, 0, sizeof(wol->sopass));
2018}
2019
2020static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2021{
2022 struct b44 *bp = netdev_priv(dev);
2023
2024 spin_lock_irq(&bp->lock);
2025 if (wol->wolopts & WAKE_MAGIC)
2026 bp->flags |= B44_FLAG_WOL_ENABLE;
2027 else
2028 bp->flags &= ~B44_FLAG_WOL_ENABLE;
2029 spin_unlock_irq(&bp->lock);
2030
2031 return 0;
2032}
2033
Jeff Garzik7282d492006-09-13 14:30:00 -04002034static const struct ethtool_ops b44_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002035 .get_drvinfo = b44_get_drvinfo,
2036 .get_settings = b44_get_settings,
2037 .set_settings = b44_set_settings,
2038 .nway_reset = b44_nway_reset,
2039 .get_link = ethtool_op_get_link,
Gary Zambrano52cafd92006-06-20 15:34:23 -07002040 .get_wol = b44_get_wol,
2041 .set_wol = b44_set_wol,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042 .get_ringparam = b44_get_ringparam,
2043 .set_ringparam = b44_set_ringparam,
2044 .get_pauseparam = b44_get_pauseparam,
2045 .set_pauseparam = b44_set_pauseparam,
2046 .get_msglevel = b44_get_msglevel,
2047 .set_msglevel = b44_set_msglevel,
Francois Romieu33539302005-11-07 01:51:34 +01002048 .get_strings = b44_get_strings,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002049 .get_sset_count = b44_get_sset_count,
Francois Romieu33539302005-11-07 01:51:34 +01002050 .get_ethtool_stats = b44_get_ethtool_stats,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002051};
2052
2053static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2054{
2055 struct mii_ioctl_data *data = if_mii(ifr);
2056 struct b44 *bp = netdev_priv(dev);
Francois Romieu34105722005-11-30 22:32:13 +01002057 int err = -EINVAL;
2058
2059 if (!netif_running(dev))
2060 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002061
2062 spin_lock_irq(&bp->lock);
2063 err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL);
2064 spin_unlock_irq(&bp->lock);
Francois Romieu34105722005-11-30 22:32:13 +01002065out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066 return err;
2067}
2068
Linus Torvalds1da177e2005-04-16 15:20:36 -07002069static int __devinit b44_get_invariants(struct b44 *bp)
2070{
Michael Buesch753f4922007-09-19 14:20:30 -07002071 struct ssb_device *sdev = bp->sdev;
2072 int err = 0;
2073 u8 *addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002074
Michael Buesch753f4922007-09-19 14:20:30 -07002075 bp->dma_offset = ssb_dma_translation(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002076
Michael Buesch753f4922007-09-19 14:20:30 -07002077 if (sdev->bus->bustype == SSB_BUSTYPE_SSB &&
2078 instance > 1) {
Larry Finger458414b2007-11-09 16:56:10 -06002079 addr = sdev->bus->sprom.et1mac;
2080 bp->phy_addr = sdev->bus->sprom.et1phyaddr;
Michael Buesch753f4922007-09-19 14:20:30 -07002081 } else {
Larry Finger458414b2007-11-09 16:56:10 -06002082 addr = sdev->bus->sprom.et0mac;
2083 bp->phy_addr = sdev->bus->sprom.et0phyaddr;
Michael Buesch753f4922007-09-19 14:20:30 -07002084 }
2085 memcpy(bp->dev->dev_addr, addr, 6);
Gary Zambrano391fc092006-03-28 14:57:38 -08002086
2087 if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
2088 printk(KERN_ERR PFX "Invalid MAC address found in EEPROM\n");
2089 return -EINVAL;
2090 }
2091
John W. Linville2160de52005-09-12 10:48:55 -04002092 memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002093
Linus Torvalds1da177e2005-04-16 15:20:36 -07002094 bp->imask = IMASK_DEF;
2095
Jeff Garzik10badc22006-04-12 18:04:32 -04002096 /* XXX - really required?
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 bp->flags |= B44_FLAG_BUGGY_TXPTR;
Michael Buesch753f4922007-09-19 14:20:30 -07002098 */
Gary Zambrano52cafd92006-06-20 15:34:23 -07002099
Michael Buesch753f4922007-09-19 14:20:30 -07002100 if (bp->sdev->id.revision >= 7)
2101 bp->flags |= B44_FLAG_B0_ANDLATER;
Gary Zambrano52cafd92006-06-20 15:34:23 -07002102
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103 return err;
2104}
2105
Michael Buesch753f4922007-09-19 14:20:30 -07002106static int __devinit b44_init_one(struct ssb_device *sdev,
2107 const struct ssb_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002108{
2109 static int b44_version_printed = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002110 struct net_device *dev;
2111 struct b44 *bp;
Joe Perches0795af52007-10-03 17:59:30 -07002112 int err;
2113 DECLARE_MAC_BUF(mac);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002114
Michael Buesch753f4922007-09-19 14:20:30 -07002115 instance++;
2116
Linus Torvalds1da177e2005-04-16 15:20:36 -07002117 if (b44_version_printed++ == 0)
2118 printk(KERN_INFO "%s", version);
2119
Linus Torvalds1da177e2005-04-16 15:20:36 -07002120
2121 dev = alloc_etherdev(sizeof(*bp));
2122 if (!dev) {
Michael Buesch753f4922007-09-19 14:20:30 -07002123 dev_err(sdev->dev, "Etherdev alloc failed, aborting.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124 err = -ENOMEM;
Michael Buesch753f4922007-09-19 14:20:30 -07002125 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002126 }
2127
Michael Buesch753f4922007-09-19 14:20:30 -07002128 SET_NETDEV_DEV(dev, sdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002129
2130 /* No interesting netdevice features in this card... */
2131 dev->features |= 0;
2132
2133 bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07002134 bp->sdev = sdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135 bp->dev = dev;
Francois Romieu874a6212005-11-07 01:50:46 +01002136
2137 bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138
2139 spin_lock_init(&bp->lock);
2140
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141 bp->rx_pending = B44_DEF_RX_RING_PENDING;
2142 bp->tx_pending = B44_DEF_TX_RING_PENDING;
2143
2144 dev->open = b44_open;
2145 dev->stop = b44_close;
2146 dev->hard_start_xmit = b44_start_xmit;
2147 dev->get_stats = b44_get_stats;
2148 dev->set_multicast_list = b44_set_rx_mode;
2149 dev->set_mac_address = b44_set_mac_addr;
2150 dev->do_ioctl = b44_ioctl;
2151 dev->tx_timeout = b44_tx_timeout;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002152 netif_napi_add(dev, &bp->napi, b44_poll, 64);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153 dev->watchdog_timeo = B44_TX_TIMEOUT;
2154#ifdef CONFIG_NET_POLL_CONTROLLER
2155 dev->poll_controller = b44_poll_controller;
2156#endif
2157 dev->change_mtu = b44_change_mtu;
Michael Buesch753f4922007-09-19 14:20:30 -07002158 dev->irq = sdev->irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159 SET_ETHTOOL_OPS(dev, &b44_ethtool_ops);
2160
Stephen Hemmingerc35ca392006-01-20 21:13:17 -08002161 netif_carrier_off(dev);
2162
Michael Buesch753f4922007-09-19 14:20:30 -07002163 err = ssb_bus_powerup(sdev->bus, 0);
2164 if (err) {
2165 dev_err(sdev->dev,
2166 "Failed to powerup the bus\n");
2167 goto err_out_free_dev;
2168 }
2169 err = ssb_dma_set_mask(sdev, DMA_30BIT_MASK);
2170 if (err) {
2171 dev_err(sdev->dev,
2172 "Required 30BIT DMA mask unsupported by the system.\n");
2173 goto err_out_powerdown;
2174 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002175 err = b44_get_invariants(bp);
2176 if (err) {
Michael Buesch753f4922007-09-19 14:20:30 -07002177 dev_err(sdev->dev,
Jeff Garzik2e8a5382006-06-27 10:47:51 -04002178 "Problem fetching invariants of chip, aborting.\n");
Michael Buesch753f4922007-09-19 14:20:30 -07002179 goto err_out_powerdown;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180 }
2181
2182 bp->mii_if.dev = dev;
2183 bp->mii_if.mdio_read = b44_mii_read;
2184 bp->mii_if.mdio_write = b44_mii_write;
2185 bp->mii_if.phy_id = bp->phy_addr;
2186 bp->mii_if.phy_id_mask = 0x1f;
2187 bp->mii_if.reg_num_mask = 0x1f;
2188
2189 /* By default, advertise all speed/duplex settings. */
2190 bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
2191 B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
2192
2193 /* By default, auto-negotiate PAUSE. */
2194 bp->flags |= B44_FLAG_PAUSE_AUTO;
2195
2196 err = register_netdev(dev);
2197 if (err) {
Michael Buesch753f4922007-09-19 14:20:30 -07002198 dev_err(sdev->dev, "Cannot register net device, aborting.\n");
2199 goto err_out_powerdown;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002200 }
2201
Michael Buesch753f4922007-09-19 14:20:30 -07002202 ssb_set_drvdata(sdev, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002203
Jeff Garzik10badc22006-04-12 18:04:32 -04002204 /* Chip reset provides power to the b44 MAC & PCI cores, which
Gary Zambrano5c513122006-03-29 17:12:05 -05002205 * is necessary for MAC register access.
Jeff Garzik10badc22006-04-12 18:04:32 -04002206 */
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002207 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
Gary Zambrano5c513122006-03-29 17:12:05 -05002208
Michael Buesch753f4922007-09-19 14:20:30 -07002209 printk(KERN_INFO "%s: Broadcom 44xx/47xx 10/100BaseT Ethernet %s\n",
Joe Perches0795af52007-10-03 17:59:30 -07002210 dev->name, print_mac(mac, dev->dev_addr));
Linus Torvalds1da177e2005-04-16 15:20:36 -07002211
2212 return 0;
2213
Michael Buesch753f4922007-09-19 14:20:30 -07002214err_out_powerdown:
2215 ssb_bus_may_powerdown(sdev->bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216
2217err_out_free_dev:
2218 free_netdev(dev);
2219
Michael Buesch753f4922007-09-19 14:20:30 -07002220out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002221 return err;
2222}
2223
Michael Buesch753f4922007-09-19 14:20:30 -07002224static void __devexit b44_remove_one(struct ssb_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225{
Michael Buesch753f4922007-09-19 14:20:30 -07002226 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002227
Francois Romieu874a6212005-11-07 01:50:46 +01002228 unregister_netdev(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07002229 ssb_bus_may_powerdown(sdev->bus);
Francois Romieu874a6212005-11-07 01:50:46 +01002230 free_netdev(dev);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002231 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
Michael Buesch753f4922007-09-19 14:20:30 -07002232 ssb_set_drvdata(sdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002233}
2234
Michael Buesch753f4922007-09-19 14:20:30 -07002235static int b44_suspend(struct ssb_device *sdev, pm_message_t state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002236{
Michael Buesch753f4922007-09-19 14:20:30 -07002237 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238 struct b44 *bp = netdev_priv(dev);
2239
Michael Buesch753f4922007-09-19 14:20:30 -07002240 if (!netif_running(dev))
2241 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002242
2243 del_timer_sync(&bp->timer);
2244
Jeff Garzik10badc22006-04-12 18:04:32 -04002245 spin_lock_irq(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002246
2247 b44_halt(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04002248 netif_carrier_off(bp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002249 netif_device_detach(bp->dev);
2250 b44_free_rings(bp);
2251
2252 spin_unlock_irq(&bp->lock);
Pavel Machek46e17852005-10-28 15:14:47 -07002253
2254 free_irq(dev->irq, dev);
Gary Zambrano52cafd92006-06-20 15:34:23 -07002255 if (bp->flags & B44_FLAG_WOL_ENABLE) {
Michael Chan5fc7d612007-01-26 23:59:57 -08002256 b44_init_hw(bp, B44_PARTIAL_RESET);
Gary Zambrano52cafd92006-06-20 15:34:23 -07002257 b44_setup_wol(bp);
2258 }
Michael Buesch753f4922007-09-19 14:20:30 -07002259
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002260 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261 return 0;
2262}
2263
Michael Buesch753f4922007-09-19 14:20:30 -07002264static int b44_resume(struct ssb_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002265{
Michael Buesch753f4922007-09-19 14:20:30 -07002266 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002267 struct b44 *bp = netdev_priv(dev);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002268 int rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002269
Michael Buesch753f4922007-09-19 14:20:30 -07002270 rc = ssb_bus_powerup(sdev->bus, 0);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002271 if (rc) {
Michael Buesch753f4922007-09-19 14:20:30 -07002272 dev_err(sdev->dev,
2273 "Failed to powerup the bus\n");
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002274 return rc;
2275 }
2276
Linus Torvalds1da177e2005-04-16 15:20:36 -07002277 if (!netif_running(dev))
2278 return 0;
2279
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002280 rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
2281 if (rc) {
Pavel Machek46e17852005-10-28 15:14:47 -07002282 printk(KERN_ERR PFX "%s: request_irq failed\n", dev->name);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002283 return rc;
2284 }
Pavel Machek46e17852005-10-28 15:14:47 -07002285
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286 spin_lock_irq(&bp->lock);
2287
2288 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08002289 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002290 netif_device_attach(bp->dev);
2291 spin_unlock_irq(&bp->lock);
2292
Linus Torvalds1da177e2005-04-16 15:20:36 -07002293 b44_enable_ints(bp);
Mark Lordd9e2d182005-11-30 22:30:23 +01002294 netif_wake_queue(dev);
Stephen Hemmingera72a8172007-06-04 13:25:37 -07002295
2296 mod_timer(&bp->timer, jiffies + 1);
2297
Linus Torvalds1da177e2005-04-16 15:20:36 -07002298 return 0;
2299}
2300
Michael Buesch753f4922007-09-19 14:20:30 -07002301static struct ssb_driver b44_ssb_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002302 .name = DRV_MODULE_NAME,
Michael Buesch753f4922007-09-19 14:20:30 -07002303 .id_table = b44_ssb_tbl,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002304 .probe = b44_init_one,
2305 .remove = __devexit_p(b44_remove_one),
Michael Buesch753f4922007-09-19 14:20:30 -07002306 .suspend = b44_suspend,
2307 .resume = b44_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002308};
2309
Michael Buesch753f4922007-09-19 14:20:30 -07002310static inline int b44_pci_init(void)
2311{
2312 int err = 0;
2313#ifdef CONFIG_B44_PCI
2314 err = ssb_pcihost_register(&b44_pci_driver);
2315#endif
2316 return err;
2317}
2318
2319static inline void b44_pci_exit(void)
2320{
2321#ifdef CONFIG_B44_PCI
2322 ssb_pcihost_unregister(&b44_pci_driver);
2323#endif
2324}
2325
Linus Torvalds1da177e2005-04-16 15:20:36 -07002326static int __init b44_init(void)
2327{
John W. Linville9f38c632005-10-18 21:30:59 -04002328 unsigned int dma_desc_align_size = dma_get_cache_alignment();
Michael Buesch753f4922007-09-19 14:20:30 -07002329 int err;
John W. Linville9f38c632005-10-18 21:30:59 -04002330
2331 /* Setup paramaters for syncing RX/TX DMA descriptors */
2332 dma_desc_align_mask = ~(dma_desc_align_size - 1);
Alan Cox22d4d772006-01-17 17:53:56 +00002333 dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
John W. Linville9f38c632005-10-18 21:30:59 -04002334
Michael Buesch753f4922007-09-19 14:20:30 -07002335 err = b44_pci_init();
2336 if (err)
2337 return err;
2338 err = ssb_driver_register(&b44_ssb_driver);
2339 if (err)
2340 b44_pci_exit();
2341 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002342}
2343
2344static void __exit b44_cleanup(void)
2345{
Michael Buesch753f4922007-09-19 14:20:30 -07002346 ssb_driver_unregister(&b44_ssb_driver);
2347 b44_pci_exit();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002348}
2349
2350module_init(b44_init);
2351module_exit(b44_cleanup);
2352