blob: 36d4d377ec2fc5df3a78a96f609aa6055e7ad167 [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
Felix Fietkau4ca85792009-01-09 02:39:57 +000076#define RX_PKT_OFFSET (RX_HEADER_LEN + 2)
77#define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET)
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 Bueschf2257632008-06-20 11:50:29 +0200151 ssb_dma_sync_single_range_for_device(sdev, 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 Bueschf2257632008-06-20 11:50:29 +0200161 ssb_dma_sync_single_range_for_cpu(sdev, 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 Bueschf2257632008-06-20 11:50:29 +0200616 ssb_dma_unmap_single(bp->sdev,
617 rp->mapping,
618 skb->len,
619 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 Bueschf2257632008-06-20 11:50:29 +0200656 mapping = ssb_dma_map_single(bp->sdev, skb->data,
657 RX_PKT_BUF_SZ,
658 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 :-( */
Michael Bueschf2257632008-06-20 11:50:29 +0200662 if (ssb_dma_mapping_error(bp->sdev, mapping) ||
Yang Hongyang28b76792009-04-06 19:01:17 -0700663 mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 /* Sigh... */
Michael Bueschf2257632008-06-20 11:50:29 +0200665 if (!ssb_dma_mapping_error(bp->sdev, mapping))
666 ssb_dma_unmap_single(bp->sdev, 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 Bueschf2257632008-06-20 11:50:29 +0200672 mapping = ssb_dma_map_single(bp->sdev, skb->data,
673 RX_PKT_BUF_SZ,
674 DMA_FROM_DEVICE);
675 if (ssb_dma_mapping_error(bp->sdev, mapping) ||
Yang Hongyang28b76792009-04-06 19:01:17 -0700676 mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) {
Michael Bueschf2257632008-06-20 11:50:29 +0200677 if (!ssb_dma_mapping_error(bp->sdev, mapping))
678 ssb_dma_unmap_single(bp->sdev, 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 }
Eric Dumazeta58c8912009-01-15 15:29:35 -0800682 bp->force_copybreak = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 }
684
Stephen Hemminger72f48612007-06-04 13:25:39 -0700685 rh = (struct rx_header *) skb->data;
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
Felix Fietkau4ca85792009-01-09 02:39:57 +0000696 ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ);
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);
Felix Fietkau4ca85792009-01-09 02:39:57 +0000702 dp->addr = cpu_to_le32((u32) mapping + 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,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000706 dest_idx * sizeof(*dp),
Michael Buesch753f4922007-09-19 14:20:30 -0700707 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,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000734 src_idx * sizeof(*src_desc),
Michael Buesch753f4922007-09-19 14:20:30 -0700735 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,
Michael Buesch5d4d9e82009-04-03 00:01:30 +0000750 dest_idx * sizeof(*dest_desc),
Michael Buesch753f4922007-09-19 14:20:30 -0700751 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -0400752
Michael Buesch37efa232009-04-06 09:52:27 +0000753 ssb_dma_sync_single_for_device(bp->sdev, dest_map->mapping,
Michael Bueschf2257632008-06-20 11:50:29 +0200754 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 Bueschf2257632008-06-20 11:50:29 +0200775 ssb_dma_sync_single_for_cpu(bp->sdev, 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:
Eric Dumazet553e2332009-05-27 10:34:50 +0000785 bp->dev->stats.rx_dropped++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 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
Eric Dumazeta58c8912009-01-15 15:29:35 -0800804 if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 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 Bueschf2257632008-06-20 11:50:29 +0200809 ssb_dma_unmap_single(bp->sdev, map,
810 skb_size, DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 /* Leave out rx_header */
Felix Fietkau4ca85792009-01-09 02:39:57 +0000812 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832 received++;
833 budget--;
834 next_pkt:
835 bp->rx_prod = (bp->rx_prod + 1) &
836 (B44_RX_RING_SIZE - 1);
837 cons = (cons + 1) & (B44_RX_RING_SIZE - 1);
838 }
839
840 bp->rx_cons = cons;
841 bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc));
842
843 return received;
844}
845
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700846static int b44_poll(struct napi_struct *napi, int budget)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847{
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700848 struct b44 *bp = container_of(napi, struct b44, napi);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700849 int work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850
851 spin_lock_irq(&bp->lock);
852
853 if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
854 /* spin_lock(&bp->tx_lock); */
855 b44_tx(bp);
856 /* spin_unlock(&bp->tx_lock); */
857 }
858 spin_unlock_irq(&bp->lock);
859
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700860 work_done = 0;
861 if (bp->istat & ISTAT_RX)
862 work_done += b44_rx(bp, budget);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863
864 if (bp->istat & ISTAT_ERRORS) {
Francois Romieud15e9c42006-12-17 23:03:15 +0100865 unsigned long flags;
866
867 spin_lock_irqsave(&bp->lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 b44_halt(bp);
869 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -0800870 b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 netif_wake_queue(bp->dev);
Francois Romieud15e9c42006-12-17 23:03:15 +0100872 spin_unlock_irqrestore(&bp->lock, flags);
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700873 work_done = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 }
875
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700876 if (work_done < budget) {
Ben Hutchings288379f2009-01-19 16:43:59 -0800877 napi_complete(napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878 b44_enable_ints(bp);
879 }
880
Stephen Hemmingerbea33482007-10-03 16:41:36 -0700881 return work_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882}
883
David Howells7d12e782006-10-05 14:55:46 +0100884static irqreturn_t b44_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885{
886 struct net_device *dev = dev_id;
887 struct b44 *bp = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 u32 istat, imask;
889 int handled = 0;
890
Francois Romieu65b984f2005-11-07 01:52:06 +0100891 spin_lock(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892
893 istat = br32(bp, B44_ISTAT);
894 imask = br32(bp, B44_IMASK);
895
Johannes Berge78181f2006-11-06 23:17:20 +0100896 /* The interrupt mask register controls which interrupt bits
897 * will actually raise an interrupt to the CPU when set by hw/firmware,
898 * but doesn't mask off the bits.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899 */
900 istat &= imask;
901 if (istat) {
902 handled = 1;
Francois Romieuba5eec92005-11-08 23:37:12 +0100903
904 if (unlikely(!netif_running(dev))) {
905 printk(KERN_INFO "%s: late interrupt.\n", dev->name);
906 goto irq_ack;
907 }
908
Ben Hutchings288379f2009-01-19 16:43:59 -0800909 if (napi_schedule_prep(&bp->napi)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 /* NOTE: These writes are posted by the readback of
911 * the ISTAT register below.
912 */
913 bp->istat = istat;
914 __b44_disable_ints(bp);
Ben Hutchings288379f2009-01-19 16:43:59 -0800915 __napi_schedule(&bp->napi);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916 } else {
917 printk(KERN_ERR PFX "%s: Error, poll already scheduled\n",
918 dev->name);
919 }
920
Francois Romieuba5eec92005-11-08 23:37:12 +0100921irq_ack:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 bw32(bp, B44_ISTAT, istat);
923 br32(bp, B44_ISTAT);
924 }
Francois Romieu65b984f2005-11-07 01:52:06 +0100925 spin_unlock(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 return IRQ_RETVAL(handled);
927}
928
929static void b44_tx_timeout(struct net_device *dev)
930{
931 struct b44 *bp = netdev_priv(dev);
932
933 printk(KERN_ERR PFX "%s: transmit timed out, resetting\n",
934 dev->name);
935
936 spin_lock_irq(&bp->lock);
937
938 b44_halt(bp);
939 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -0800940 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941
942 spin_unlock_irq(&bp->lock);
943
944 b44_enable_ints(bp);
945
946 netif_wake_queue(dev);
947}
948
949static int b44_start_xmit(struct sk_buff *skb, struct net_device *dev)
950{
951 struct b44 *bp = netdev_priv(dev);
Francois Romieuc7193692005-11-07 01:50:03 +0100952 int rc = NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953 dma_addr_t mapping;
954 u32 len, entry, ctrl;
955
956 len = skb->len;
957 spin_lock_irq(&bp->lock);
958
959 /* This is a hard error, log it. */
960 if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) {
961 netif_stop_queue(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n",
963 dev->name);
Francois Romieuc7193692005-11-07 01:50:03 +0100964 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700965 }
966
Michael Bueschf2257632008-06-20 11:50:29 +0200967 mapping = ssb_dma_map_single(bp->sdev, skb->data, len, DMA_TO_DEVICE);
Yang Hongyang28b76792009-04-06 19:01:17 -0700968 if (ssb_dma_mapping_error(bp->sdev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700969 struct sk_buff *bounce_skb;
970
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 /* Chip can't handle DMA to/from >1GB, use bounce buffer */
Michael Bueschf2257632008-06-20 11:50:29 +0200972 if (!ssb_dma_mapping_error(bp->sdev, mapping))
973 ssb_dma_unmap_single(bp->sdev, mapping, len,
974 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975
David S. Miller9034f772009-02-10 01:56:45 -0800976 bounce_skb = __netdev_alloc_skb(dev, len, GFP_ATOMIC | GFP_DMA);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977 if (!bounce_skb)
Francois Romieuc7193692005-11-07 01:50:03 +0100978 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979
Michael Bueschf2257632008-06-20 11:50:29 +0200980 mapping = ssb_dma_map_single(bp->sdev, bounce_skb->data,
981 len, DMA_TO_DEVICE);
Yang Hongyang28b76792009-04-06 19:01:17 -0700982 if (ssb_dma_mapping_error(bp->sdev, mapping) || mapping + len > DMA_BIT_MASK(30)) {
Michael Bueschf2257632008-06-20 11:50:29 +0200983 if (!ssb_dma_mapping_error(bp->sdev, mapping))
984 ssb_dma_unmap_single(bp->sdev, mapping,
985 len, DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 dev_kfree_skb_any(bounce_skb);
Francois Romieuc7193692005-11-07 01:50:03 +0100987 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988 }
989
Stephen Hemmingerf65a7172007-06-04 13:25:38 -0700990 skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991 dev_kfree_skb_any(skb);
992 skb = bounce_skb;
993 }
994
995 entry = bp->tx_prod;
996 bp->tx_buffers[entry].skb = skb;
Michael Buesch753f4922007-09-19 14:20:30 -0700997 bp->tx_buffers[entry].mapping = mapping;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700998
999 ctrl = (len & DESC_CTRL_LEN);
1000 ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF;
1001 if (entry == (B44_TX_RING_SIZE - 1))
1002 ctrl |= DESC_CTRL_EOT;
1003
1004 bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl);
1005 bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset);
1006
John W. Linville9f38c632005-10-18 21:30:59 -04001007 if (bp->flags & B44_FLAG_TX_RING_HACK)
Michael Buesch753f4922007-09-19 14:20:30 -07001008 b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma,
1009 entry * sizeof(bp->tx_ring[0]),
1010 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001011
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012 entry = NEXT_TX(entry);
1013
1014 bp->tx_prod = entry;
1015
1016 wmb();
1017
1018 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1019 if (bp->flags & B44_FLAG_BUGGY_TXPTR)
1020 bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc));
1021 if (bp->flags & B44_FLAG_REORDER_BUG)
1022 br32(bp, B44_DMATX_PTR);
1023
1024 if (TX_BUFFS_AVAIL(bp) < 1)
1025 netif_stop_queue(dev);
1026
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 dev->trans_start = jiffies;
1028
Francois Romieuc7193692005-11-07 01:50:03 +01001029out_unlock:
1030 spin_unlock_irq(&bp->lock);
1031
1032 return rc;
1033
1034err_out:
1035 rc = NETDEV_TX_BUSY;
1036 goto out_unlock;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037}
1038
1039static int b44_change_mtu(struct net_device *dev, int new_mtu)
1040{
1041 struct b44 *bp = netdev_priv(dev);
1042
1043 if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU)
1044 return -EINVAL;
1045
1046 if (!netif_running(dev)) {
1047 /* We'll just catch it later when the
1048 * device is up'd.
1049 */
1050 dev->mtu = new_mtu;
1051 return 0;
1052 }
1053
1054 spin_lock_irq(&bp->lock);
1055 b44_halt(bp);
1056 dev->mtu = new_mtu;
1057 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001058 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 spin_unlock_irq(&bp->lock);
1060
1061 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001062
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 return 0;
1064}
1065
1066/* Free up pending packets in all rx/tx rings.
1067 *
1068 * The chip has been shut down and the driver detached from
1069 * the networking, so no interrupts or new tx packets will
1070 * end up in the driver. bp->lock is not held and we are not
1071 * in an interrupt context and thus may sleep.
1072 */
1073static void b44_free_rings(struct b44 *bp)
1074{
1075 struct ring_info *rp;
1076 int i;
1077
1078 for (i = 0; i < B44_RX_RING_SIZE; i++) {
1079 rp = &bp->rx_buffers[i];
1080
1081 if (rp->skb == NULL)
1082 continue;
Michael Bueschf2257632008-06-20 11:50:29 +02001083 ssb_dma_unmap_single(bp->sdev, rp->mapping, RX_PKT_BUF_SZ,
1084 DMA_FROM_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001085 dev_kfree_skb_any(rp->skb);
1086 rp->skb = NULL;
1087 }
1088
1089 /* XXX needs changes once NETIF_F_SG is set... */
1090 for (i = 0; i < B44_TX_RING_SIZE; i++) {
1091 rp = &bp->tx_buffers[i];
1092
1093 if (rp->skb == NULL)
1094 continue;
Michael Bueschf2257632008-06-20 11:50:29 +02001095 ssb_dma_unmap_single(bp->sdev, rp->mapping, rp->skb->len,
1096 DMA_TO_DEVICE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 dev_kfree_skb_any(rp->skb);
1098 rp->skb = NULL;
1099 }
1100}
1101
1102/* Initialize tx/rx rings for packet processing.
1103 *
1104 * The chip has been shut down and the driver detached from
1105 * the networking, so no interrupts or new tx packets will
Francois Romieu874a6212005-11-07 01:50:46 +01001106 * end up in the driver.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107 */
1108static void b44_init_rings(struct b44 *bp)
1109{
1110 int i;
1111
1112 b44_free_rings(bp);
1113
1114 memset(bp->rx_ring, 0, B44_RX_RING_BYTES);
1115 memset(bp->tx_ring, 0, B44_TX_RING_BYTES);
1116
John W. Linville9f38c632005-10-18 21:30:59 -04001117 if (bp->flags & B44_FLAG_RX_RING_HACK)
Michael Bueschf2257632008-06-20 11:50:29 +02001118 ssb_dma_sync_single_for_device(bp->sdev, bp->rx_ring_dma,
1119 DMA_TABLE_BYTES,
1120 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001121
1122 if (bp->flags & B44_FLAG_TX_RING_HACK)
Michael Bueschf2257632008-06-20 11:50:29 +02001123 ssb_dma_sync_single_for_device(bp->sdev, bp->tx_ring_dma,
1124 DMA_TABLE_BYTES,
1125 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001126
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127 for (i = 0; i < bp->rx_pending; i++) {
1128 if (b44_alloc_rx_skb(bp, -1, i) < 0)
1129 break;
1130 }
1131}
1132
1133/*
1134 * Must not be invoked with interrupt sources disabled and
1135 * the hardware shutdown down.
1136 */
1137static void b44_free_consistent(struct b44 *bp)
1138{
Jesper Juhlb4558ea2005-10-28 16:53:13 -04001139 kfree(bp->rx_buffers);
1140 bp->rx_buffers = NULL;
1141 kfree(bp->tx_buffers);
1142 bp->tx_buffers = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 if (bp->rx_ring) {
John W. Linville9f38c632005-10-18 21:30:59 -04001144 if (bp->flags & B44_FLAG_RX_RING_HACK) {
Michael Bueschf2257632008-06-20 11:50:29 +02001145 ssb_dma_unmap_single(bp->sdev, bp->rx_ring_dma,
1146 DMA_TABLE_BYTES,
1147 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001148 kfree(bp->rx_ring);
1149 } else
Michael Bueschf2257632008-06-20 11:50:29 +02001150 ssb_dma_free_consistent(bp->sdev, DMA_TABLE_BYTES,
1151 bp->rx_ring, bp->rx_ring_dma,
1152 GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153 bp->rx_ring = NULL;
John W. Linville9f38c632005-10-18 21:30:59 -04001154 bp->flags &= ~B44_FLAG_RX_RING_HACK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155 }
1156 if (bp->tx_ring) {
John W. Linville9f38c632005-10-18 21:30:59 -04001157 if (bp->flags & B44_FLAG_TX_RING_HACK) {
Michael Bueschf2257632008-06-20 11:50:29 +02001158 ssb_dma_unmap_single(bp->sdev, bp->tx_ring_dma,
1159 DMA_TABLE_BYTES,
1160 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001161 kfree(bp->tx_ring);
1162 } else
Michael Bueschf2257632008-06-20 11:50:29 +02001163 ssb_dma_free_consistent(bp->sdev, DMA_TABLE_BYTES,
1164 bp->tx_ring, bp->tx_ring_dma,
1165 GFP_KERNEL);
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 Bueschf2257632008-06-20 11:50:29 +02001190 bp->rx_ring = ssb_dma_alloc_consistent(bp->sdev, 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 Bueschf2257632008-06-20 11:50:29 +02001202 rx_ring_dma = ssb_dma_map_single(bp->sdev, rx_ring,
1203 DMA_TABLE_BYTES,
1204 DMA_BIDIRECTIONAL);
John W. Linville9f38c632005-10-18 21:30:59 -04001205
Michael Bueschf2257632008-06-20 11:50:29 +02001206 if (ssb_dma_mapping_error(bp->sdev, rx_ring_dma) ||
Yang Hongyang28b76792009-04-06 19:01:17 -07001207 rx_ring_dma + size > DMA_BIT_MASK(30)) {
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 Bueschf2257632008-06-20 11:50:29 +02001217 bp->tx_ring = ssb_dma_alloc_consistent(bp->sdev, size, &bp->tx_ring_dma, gfp);
John W. Linville9f38c632005-10-18 21:30:59 -04001218 if (!bp->tx_ring) {
Michael Bueschf2257632008-06-20 11:50:29 +02001219 /* Allocation may have failed due to ssb_dma_alloc_consistent
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 Bueschf2257632008-06-20 11:50:29 +02001229 tx_ring_dma = ssb_dma_map_single(bp->sdev, tx_ring,
Michael Buesch753f4922007-09-19 14:20:30 -07001230 DMA_TABLE_BYTES,
1231 DMA_TO_DEVICE);
John W. Linville9f38c632005-10-18 21:30:59 -04001232
Michael Bueschf2257632008-06-20 11:50:29 +02001233 if (ssb_dma_mapping_error(bp->sdev, tx_ring_dma) ||
Yang Hongyang28b76792009-04-06 19:01:17 -07001234 tx_ring_dma + size > DMA_BIT_MASK(30)) {
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;
Michael Bueschf8af11a2009-02-26 22:33:00 -08001267 bool was_enabled;
Michael Buesch753f4922007-09-19 14:20:30 -07001268
Michael Bueschf8af11a2009-02-26 22:33:00 -08001269 was_enabled = ssb_device_is_enabled(bp->sdev);
1270
1271 ssb_device_enable(bp->sdev, 0);
1272 ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev);
1273
1274 if (was_enabled) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275 bw32(bp, B44_RCV_LAZY, 0);
1276 bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE);
Gary Zambrano40ee8c72007-02-16 13:27:27 -08001277 b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278 bw32(bp, B44_DMATX_CTRL, 0);
1279 bp->tx_prod = bp->tx_cons = 0;
1280 if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) {
1281 b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE,
1282 100, 0);
1283 }
1284 bw32(bp, B44_DMARX_CTRL, 0);
1285 bp->rx_prod = bp->rx_cons = 0;
Michael Bueschf8af11a2009-02-26 22:33:00 -08001286 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288 b44_clear_stats(bp);
1289
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001290 /*
1291 * Don't enable PHY if we are doing a partial reset
1292 * we are probably going to power down
1293 */
1294 if (reset_kind == B44_CHIP_RESET_PARTIAL)
1295 return;
1296
Michael Buesch753f4922007-09-19 14:20:30 -07001297 switch (sdev->bus->bustype) {
1298 case SSB_BUSTYPE_SSB:
1299 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1300 (((ssb_clockspeed(sdev->bus) + (B44_MDC_RATIO / 2)) / B44_MDC_RATIO)
1301 & MDIO_CTRL_MAXF_MASK)));
1302 break;
1303 case SSB_BUSTYPE_PCI:
1304 case SSB_BUSTYPE_PCMCIA:
1305 bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
1306 (0x0d & MDIO_CTRL_MAXF_MASK)));
1307 break;
1308 }
1309
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310 br32(bp, B44_MDIO_CTRL);
1311
1312 if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) {
1313 bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL);
1314 br32(bp, B44_ENET_CTRL);
1315 bp->flags &= ~B44_FLAG_INTERNAL_PHY;
1316 } else {
1317 u32 val = br32(bp, B44_DEVCTRL);
1318
1319 if (val & DEVCTRL_EPR) {
1320 bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR));
1321 br32(bp, B44_DEVCTRL);
1322 udelay(100);
1323 }
1324 bp->flags |= B44_FLAG_INTERNAL_PHY;
1325 }
1326}
1327
1328/* bp->lock is held. */
1329static void b44_halt(struct b44 *bp)
1330{
1331 b44_disable_ints(bp);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001332 /* reset PHY */
1333 b44_phy_reset(bp);
1334 /* power down PHY */
1335 printk(KERN_INFO PFX "%s: powering down PHY\n", bp->dev->name);
1336 bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN);
1337 /* now reset the chip, but without enabling the MAC&PHY
1338 * part of it. This has to be done _after_ we shut down the PHY */
1339 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340}
1341
1342/* bp->lock is held. */
1343static void __b44_set_mac_addr(struct b44 *bp)
1344{
1345 bw32(bp, B44_CAM_CTRL, 0);
1346 if (!(bp->dev->flags & IFF_PROMISC)) {
1347 u32 val;
1348
1349 __b44_cam_write(bp, bp->dev->dev_addr, 0);
1350 val = br32(bp, B44_CAM_CTRL);
1351 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1352 }
1353}
1354
1355static int b44_set_mac_addr(struct net_device *dev, void *p)
1356{
1357 struct b44 *bp = netdev_priv(dev);
1358 struct sockaddr *addr = p;
Michael Buesch753f4922007-09-19 14:20:30 -07001359 u32 val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360
1361 if (netif_running(dev))
1362 return -EBUSY;
1363
Gary Zambrano391fc092006-03-28 14:57:38 -08001364 if (!is_valid_ether_addr(addr->sa_data))
1365 return -EINVAL;
1366
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1368
1369 spin_lock_irq(&bp->lock);
Michael Buesch753f4922007-09-19 14:20:30 -07001370
1371 val = br32(bp, B44_RXCONFIG);
1372 if (!(val & RXCONFIG_CAM_ABSENT))
1373 __b44_set_mac_addr(bp);
1374
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375 spin_unlock_irq(&bp->lock);
1376
1377 return 0;
1378}
1379
1380/* Called at device open time to get the chip ready for
1381 * packet processing. Invoked with bp->lock held.
1382 */
1383static void __b44_set_rx_mode(struct net_device *);
Michael Chan5fc7d612007-01-26 23:59:57 -08001384static void b44_init_hw(struct b44 *bp, int reset_kind)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001385{
1386 u32 val;
1387
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001388 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
Michael Chan5fc7d612007-01-26 23:59:57 -08001389 if (reset_kind == B44_FULL_RESET) {
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001390 b44_phy_reset(bp);
1391 b44_setup_phy(bp);
1392 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393
1394 /* Enable CRC32, set proper LED modes and power on PHY */
1395 bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL);
1396 bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT));
1397
1398 /* This sets the MAC address too. */
1399 __b44_set_rx_mode(bp->dev);
1400
1401 /* MTU + eth header + possible VLAN tag + struct rx_header */
1402 bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1403 bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN);
1404
1405 bw32(bp, B44_TX_WMARK, 56); /* XXX magic */
Michael Chan5fc7d612007-01-26 23:59:57 -08001406 if (reset_kind == B44_PARTIAL_RESET) {
1407 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
Stephen Hemminger72f48612007-06-04 13:25:39 -07001408 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
Michael Chan5fc7d612007-01-26 23:59:57 -08001409 } else {
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001410 bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE);
1411 bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset);
1412 bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE |
Stephen Hemminger72f48612007-06-04 13:25:39 -07001413 (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT)));
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001414 bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001416 bw32(bp, B44_DMARX_PTR, bp->rx_pending);
1417 bp->rx_prod = bp->rx_pending;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001419 bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ);
Gary Zambrano00e8b3a2006-06-20 15:34:26 -07001420 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421
1422 val = br32(bp, B44_ENET_CTRL);
1423 bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE));
1424}
1425
1426static int b44_open(struct net_device *dev)
1427{
1428 struct b44 *bp = netdev_priv(dev);
1429 int err;
1430
Michael Buesch753f4922007-09-19 14:20:30 -07001431 err = b44_alloc_consistent(bp, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432 if (err)
Francois Romieu6c2f4262005-11-07 01:52:57 +01001433 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001434
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001435 napi_enable(&bp->napi);
1436
Linus Torvalds1da177e2005-04-16 15:20:36 -07001437 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001438 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439
John W. Linvillee254e9b2005-06-08 15:11:57 -04001440 b44_check_phy(bp);
1441
Thomas Gleixner1fb9df52006-07-01 19:29:39 -07001442 err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001443 if (unlikely(err < 0)) {
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001444 napi_disable(&bp->napi);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01001445 b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001446 b44_free_rings(bp);
1447 b44_free_consistent(bp);
1448 goto out;
1449 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001450
1451 init_timer(&bp->timer);
1452 bp->timer.expires = jiffies + HZ;
1453 bp->timer.data = (unsigned long) bp;
1454 bp->timer.function = b44_timer;
1455 add_timer(&bp->timer);
1456
1457 b44_enable_ints(bp);
Mark Lordd9e2d182005-11-30 22:30:23 +01001458 netif_start_queue(dev);
Francois Romieu6c2f4262005-11-07 01:52:57 +01001459out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001460 return err;
1461}
1462
Linus Torvalds1da177e2005-04-16 15:20:36 -07001463#ifdef CONFIG_NET_POLL_CONTROLLER
1464/*
1465 * Polling receive - used by netconsole and other diagnostic tools
1466 * to allow network i/o with interrupts disabled.
1467 */
1468static void b44_poll_controller(struct net_device *dev)
1469{
1470 disable_irq(dev->irq);
David Howells7d12e782006-10-05 14:55:46 +01001471 b44_interrupt(dev->irq, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472 enable_irq(dev->irq);
1473}
1474#endif
1475
Gary Zambrano725ad802006-06-20 15:34:36 -07001476static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset)
1477{
1478 u32 i;
1479 u32 *pattern = (u32 *) pp;
1480
1481 for (i = 0; i < bytes; i += sizeof(u32)) {
1482 bw32(bp, B44_FILT_ADDR, table_offset + i);
1483 bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]);
1484 }
1485}
1486
1487static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset)
1488{
1489 int magicsync = 6;
1490 int k, j, len = offset;
1491 int ethaddr_bytes = ETH_ALEN;
1492
1493 memset(ppattern + offset, 0xff, magicsync);
1494 for (j = 0; j < magicsync; j++)
1495 set_bit(len++, (unsigned long *) pmask);
1496
1497 for (j = 0; j < B44_MAX_PATTERNS; j++) {
1498 if ((B44_PATTERN_SIZE - len) >= ETH_ALEN)
1499 ethaddr_bytes = ETH_ALEN;
1500 else
1501 ethaddr_bytes = B44_PATTERN_SIZE - len;
1502 if (ethaddr_bytes <=0)
1503 break;
1504 for (k = 0; k< ethaddr_bytes; k++) {
1505 ppattern[offset + magicsync +
1506 (j * ETH_ALEN) + k] = macaddr[k];
1507 len++;
1508 set_bit(len, (unsigned long *) pmask);
1509 }
1510 }
1511 return len - 1;
1512}
1513
1514/* Setup magic packet patterns in the b44 WOL
1515 * pattern matching filter.
1516 */
1517static void b44_setup_pseudo_magicp(struct b44 *bp)
1518{
1519
1520 u32 val;
1521 int plen0, plen1, plen2;
1522 u8 *pwol_pattern;
1523 u8 pwol_mask[B44_PMASK_SIZE];
1524
Yoann Padioleaudd00cc42007-07-19 01:49:03 -07001525 pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
Gary Zambrano725ad802006-06-20 15:34:36 -07001526 if (!pwol_pattern) {
1527 printk(KERN_ERR PFX "Memory not available for WOL\n");
1528 return;
1529 }
1530
1531 /* Ipv4 magic packet pattern - pattern 0.*/
Gary Zambrano725ad802006-06-20 15:34:36 -07001532 memset(pwol_mask, 0, B44_PMASK_SIZE);
1533 plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1534 B44_ETHIPV4UDP_HLEN);
1535
1536 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE);
1537 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE);
1538
1539 /* Raw ethernet II magic packet pattern - pattern 1 */
1540 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1541 memset(pwol_mask, 0, B44_PMASK_SIZE);
1542 plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1543 ETH_HLEN);
1544
1545 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1546 B44_PATTERN_BASE + B44_PATTERN_SIZE);
1547 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1548 B44_PMASK_BASE + B44_PMASK_SIZE);
1549
1550 /* Ipv6 magic packet pattern - pattern 2 */
1551 memset(pwol_pattern, 0, B44_PATTERN_SIZE);
1552 memset(pwol_mask, 0, B44_PMASK_SIZE);
1553 plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
1554 B44_ETHIPV6UDP_HLEN);
1555
1556 bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE,
1557 B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE);
1558 bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE,
1559 B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE);
1560
1561 kfree(pwol_pattern);
1562
1563 /* set these pattern's lengths: one less than each real length */
1564 val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE;
1565 bw32(bp, B44_WKUP_LEN, val);
1566
1567 /* enable wakeup pattern matching */
1568 val = br32(bp, B44_DEVCTRL);
1569 bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE);
1570
1571}
Gary Zambrano52cafd92006-06-20 15:34:23 -07001572
Michael Buesch753f4922007-09-19 14:20:30 -07001573#ifdef CONFIG_B44_PCI
1574static void b44_setup_wol_pci(struct b44 *bp)
1575{
1576 u16 val;
1577
1578 if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) {
1579 bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE);
1580 pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val);
1581 pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE);
1582 }
1583}
1584#else
1585static inline void b44_setup_wol_pci(struct b44 *bp) { }
1586#endif /* CONFIG_B44_PCI */
1587
Gary Zambrano52cafd92006-06-20 15:34:23 -07001588static void b44_setup_wol(struct b44 *bp)
1589{
1590 u32 val;
Gary Zambrano52cafd92006-06-20 15:34:23 -07001591
1592 bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI);
1593
1594 if (bp->flags & B44_FLAG_B0_ANDLATER) {
1595
1596 bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE);
1597
1598 val = bp->dev->dev_addr[2] << 24 |
1599 bp->dev->dev_addr[3] << 16 |
1600 bp->dev->dev_addr[4] << 8 |
1601 bp->dev->dev_addr[5];
1602 bw32(bp, B44_ADDR_LO, val);
1603
1604 val = bp->dev->dev_addr[0] << 8 |
1605 bp->dev->dev_addr[1];
1606 bw32(bp, B44_ADDR_HI, val);
1607
1608 val = br32(bp, B44_DEVCTRL);
1609 bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE);
1610
Gary Zambrano725ad802006-06-20 15:34:36 -07001611 } else {
1612 b44_setup_pseudo_magicp(bp);
1613 }
Michael Buesch753f4922007-09-19 14:20:30 -07001614 b44_setup_wol_pci(bp);
Gary Zambrano52cafd92006-06-20 15:34:23 -07001615}
1616
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617static int b44_close(struct net_device *dev)
1618{
1619 struct b44 *bp = netdev_priv(dev);
1620
1621 netif_stop_queue(dev);
1622
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001623 napi_disable(&bp->napi);
Francois Romieuba5eec92005-11-08 23:37:12 +01001624
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625 del_timer_sync(&bp->timer);
1626
1627 spin_lock_irq(&bp->lock);
1628
Linus Torvalds1da177e2005-04-16 15:20:36 -07001629 b44_halt(bp);
1630 b44_free_rings(bp);
Stephen Hemmingerc35ca392006-01-20 21:13:17 -08001631 netif_carrier_off(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001632
1633 spin_unlock_irq(&bp->lock);
1634
1635 free_irq(dev->irq, dev);
1636
Gary Zambrano52cafd92006-06-20 15:34:23 -07001637 if (bp->flags & B44_FLAG_WOL_ENABLE) {
Michael Chan5fc7d612007-01-26 23:59:57 -08001638 b44_init_hw(bp, B44_PARTIAL_RESET);
Gary Zambrano52cafd92006-06-20 15:34:23 -07001639 b44_setup_wol(bp);
1640 }
1641
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642 b44_free_consistent(bp);
1643
1644 return 0;
1645}
1646
1647static struct net_device_stats *b44_get_stats(struct net_device *dev)
1648{
1649 struct b44 *bp = netdev_priv(dev);
Eric Dumazet553e2332009-05-27 10:34:50 +00001650 struct net_device_stats *nstat = &dev->stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001651 struct b44_hw_stats *hwstat = &bp->hw_stats;
1652
1653 /* Convert HW stats into netdevice stats. */
1654 nstat->rx_packets = hwstat->rx_pkts;
1655 nstat->tx_packets = hwstat->tx_pkts;
1656 nstat->rx_bytes = hwstat->rx_octets;
1657 nstat->tx_bytes = hwstat->tx_octets;
1658 nstat->tx_errors = (hwstat->tx_jabber_pkts +
1659 hwstat->tx_oversize_pkts +
1660 hwstat->tx_underruns +
1661 hwstat->tx_excessive_cols +
1662 hwstat->tx_late_cols);
1663 nstat->multicast = hwstat->tx_multicast_pkts;
1664 nstat->collisions = hwstat->tx_total_cols;
1665
1666 nstat->rx_length_errors = (hwstat->rx_oversize_pkts +
1667 hwstat->rx_undersize);
1668 nstat->rx_over_errors = hwstat->rx_missed_pkts;
1669 nstat->rx_frame_errors = hwstat->rx_align_errs;
1670 nstat->rx_crc_errors = hwstat->rx_crc_errs;
1671 nstat->rx_errors = (hwstat->rx_jabber_pkts +
1672 hwstat->rx_oversize_pkts +
1673 hwstat->rx_missed_pkts +
1674 hwstat->rx_crc_align_errs +
1675 hwstat->rx_undersize +
1676 hwstat->rx_crc_errs +
1677 hwstat->rx_align_errs +
1678 hwstat->rx_symbol_errs);
1679
1680 nstat->tx_aborted_errors = hwstat->tx_underruns;
1681#if 0
1682 /* Carrier lost counter seems to be broken for some devices */
1683 nstat->tx_carrier_errors = hwstat->tx_carrier_lost;
1684#endif
1685
1686 return nstat;
1687}
1688
1689static int __b44_load_mcast(struct b44 *bp, struct net_device *dev)
1690{
1691 struct dev_mc_list *mclist;
1692 int i, num_ents;
1693
1694 num_ents = min_t(int, dev->mc_count, B44_MCAST_TABLE_SIZE);
1695 mclist = dev->mc_list;
1696 for (i = 0; mclist && i < num_ents; i++, mclist = mclist->next) {
1697 __b44_cam_write(bp, mclist->dmi_addr, i + 1);
1698 }
1699 return i+1;
1700}
1701
1702static void __b44_set_rx_mode(struct net_device *dev)
1703{
1704 struct b44 *bp = netdev_priv(dev);
1705 u32 val;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706
1707 val = br32(bp, B44_RXCONFIG);
1708 val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI);
Michael Buesch753f4922007-09-19 14:20:30 -07001709 if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001710 val |= RXCONFIG_PROMISC;
1711 bw32(bp, B44_RXCONFIG, val);
1712 } else {
Francois Romieu874a6212005-11-07 01:50:46 +01001713 unsigned char zero[6] = {0, 0, 0, 0, 0, 0};
Bill Helfinstinecda22aa2007-04-01 13:10:28 -04001714 int i = 1;
Francois Romieu874a6212005-11-07 01:50:46 +01001715
Linus Torvalds1da177e2005-04-16 15:20:36 -07001716 __b44_set_mac_addr(bp);
1717
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001718 if ((dev->flags & IFF_ALLMULTI) ||
1719 (dev->mc_count > B44_MCAST_TABLE_SIZE))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001720 val |= RXCONFIG_ALLMULTI;
1721 else
Francois Romieu874a6212005-11-07 01:50:46 +01001722 i = __b44_load_mcast(bp, dev);
Jeff Garzik10badc22006-04-12 18:04:32 -04001723
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001724 for (; i < 64; i++)
Jeff Garzik10badc22006-04-12 18:04:32 -04001725 __b44_cam_write(bp, zero, i);
Jeff Garzik2f614fe2006-10-05 07:10:38 -04001726
Linus Torvalds1da177e2005-04-16 15:20:36 -07001727 bw32(bp, B44_RXCONFIG, val);
1728 val = br32(bp, B44_CAM_CTRL);
1729 bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE);
1730 }
1731}
1732
1733static void b44_set_rx_mode(struct net_device *dev)
1734{
1735 struct b44 *bp = netdev_priv(dev);
1736
1737 spin_lock_irq(&bp->lock);
1738 __b44_set_rx_mode(dev);
1739 spin_unlock_irq(&bp->lock);
1740}
1741
1742static u32 b44_get_msglevel(struct net_device *dev)
1743{
1744 struct b44 *bp = netdev_priv(dev);
1745 return bp->msg_enable;
1746}
1747
1748static void b44_set_msglevel(struct net_device *dev, u32 value)
1749{
1750 struct b44 *bp = netdev_priv(dev);
1751 bp->msg_enable = value;
1752}
1753
1754static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info)
1755{
1756 struct b44 *bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07001757 struct ssb_bus *bus = bp->sdev->bus;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001758
Michael Buesch753f4922007-09-19 14:20:30 -07001759 strncpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver));
1760 strncpy(info->version, DRV_MODULE_VERSION, sizeof(info->driver));
1761 switch (bus->bustype) {
1762 case SSB_BUSTYPE_PCI:
1763 strncpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info));
1764 break;
1765 case SSB_BUSTYPE_PCMCIA:
1766 case SSB_BUSTYPE_SSB:
1767 strncpy(info->bus_info, "SSB", sizeof(info->bus_info));
1768 break;
1769 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001770}
1771
1772static int b44_nway_reset(struct net_device *dev)
1773{
1774 struct b44 *bp = netdev_priv(dev);
1775 u32 bmcr;
1776 int r;
1777
1778 spin_lock_irq(&bp->lock);
1779 b44_readphy(bp, MII_BMCR, &bmcr);
1780 b44_readphy(bp, MII_BMCR, &bmcr);
1781 r = -EINVAL;
1782 if (bmcr & BMCR_ANENABLE) {
1783 b44_writephy(bp, MII_BMCR,
1784 bmcr | BMCR_ANRESTART);
1785 r = 0;
1786 }
1787 spin_unlock_irq(&bp->lock);
1788
1789 return r;
1790}
1791
1792static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1793{
1794 struct b44 *bp = netdev_priv(dev);
1795
Linus Torvalds1da177e2005-04-16 15:20:36 -07001796 cmd->supported = (SUPPORTED_Autoneg);
1797 cmd->supported |= (SUPPORTED_100baseT_Half |
1798 SUPPORTED_100baseT_Full |
1799 SUPPORTED_10baseT_Half |
1800 SUPPORTED_10baseT_Full |
1801 SUPPORTED_MII);
1802
1803 cmd->advertising = 0;
1804 if (bp->flags & B44_FLAG_ADV_10HALF)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001805 cmd->advertising |= ADVERTISED_10baseT_Half;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 if (bp->flags & B44_FLAG_ADV_10FULL)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001807 cmd->advertising |= ADVERTISED_10baseT_Full;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808 if (bp->flags & B44_FLAG_ADV_100HALF)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001809 cmd->advertising |= ADVERTISED_100baseT_Half;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001810 if (bp->flags & B44_FLAG_ADV_100FULL)
Matthew Wilcoxadf6e002005-10-04 11:25:17 -06001811 cmd->advertising |= ADVERTISED_100baseT_Full;
1812 cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813 cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ?
1814 SPEED_100 : SPEED_10;
1815 cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ?
1816 DUPLEX_FULL : DUPLEX_HALF;
1817 cmd->port = 0;
1818 cmd->phy_address = bp->phy_addr;
1819 cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ?
1820 XCVR_INTERNAL : XCVR_EXTERNAL;
1821 cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ?
1822 AUTONEG_DISABLE : AUTONEG_ENABLE;
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001823 if (cmd->autoneg == AUTONEG_ENABLE)
1824 cmd->advertising |= ADVERTISED_Autoneg;
1825 if (!netif_running(dev)){
1826 cmd->speed = 0;
1827 cmd->duplex = 0xff;
1828 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001829 cmd->maxtxpkt = 0;
1830 cmd->maxrxpkt = 0;
1831 return 0;
1832}
1833
1834static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1835{
1836 struct b44 *bp = netdev_priv(dev);
1837
Linus Torvalds1da177e2005-04-16 15:20:36 -07001838 /* We do not support gigabit. */
1839 if (cmd->autoneg == AUTONEG_ENABLE) {
1840 if (cmd->advertising &
1841 (ADVERTISED_1000baseT_Half |
1842 ADVERTISED_1000baseT_Full))
1843 return -EINVAL;
1844 } else if ((cmd->speed != SPEED_100 &&
1845 cmd->speed != SPEED_10) ||
1846 (cmd->duplex != DUPLEX_HALF &&
1847 cmd->duplex != DUPLEX_FULL)) {
1848 return -EINVAL;
1849 }
1850
1851 spin_lock_irq(&bp->lock);
1852
1853 if (cmd->autoneg == AUTONEG_ENABLE) {
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001854 bp->flags &= ~(B44_FLAG_FORCE_LINK |
1855 B44_FLAG_100_BASE_T |
1856 B44_FLAG_FULL_DUPLEX |
1857 B44_FLAG_ADV_10HALF |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001858 B44_FLAG_ADV_10FULL |
1859 B44_FLAG_ADV_100HALF |
1860 B44_FLAG_ADV_100FULL);
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001861 if (cmd->advertising == 0) {
1862 bp->flags |= (B44_FLAG_ADV_10HALF |
1863 B44_FLAG_ADV_10FULL |
1864 B44_FLAG_ADV_100HALF |
1865 B44_FLAG_ADV_100FULL);
1866 } else {
1867 if (cmd->advertising & ADVERTISED_10baseT_Half)
1868 bp->flags |= B44_FLAG_ADV_10HALF;
1869 if (cmd->advertising & ADVERTISED_10baseT_Full)
1870 bp->flags |= B44_FLAG_ADV_10FULL;
1871 if (cmd->advertising & ADVERTISED_100baseT_Half)
1872 bp->flags |= B44_FLAG_ADV_100HALF;
1873 if (cmd->advertising & ADVERTISED_100baseT_Full)
1874 bp->flags |= B44_FLAG_ADV_100FULL;
1875 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001876 } else {
1877 bp->flags |= B44_FLAG_FORCE_LINK;
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001878 bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001879 if (cmd->speed == SPEED_100)
1880 bp->flags |= B44_FLAG_100_BASE_T;
1881 if (cmd->duplex == DUPLEX_FULL)
1882 bp->flags |= B44_FLAG_FULL_DUPLEX;
1883 }
1884
Gary Zambrano47b9c3b2006-06-20 15:34:15 -07001885 if (netif_running(dev))
1886 b44_setup_phy(bp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001887
1888 spin_unlock_irq(&bp->lock);
1889
1890 return 0;
1891}
1892
1893static void b44_get_ringparam(struct net_device *dev,
1894 struct ethtool_ringparam *ering)
1895{
1896 struct b44 *bp = netdev_priv(dev);
1897
1898 ering->rx_max_pending = B44_RX_RING_SIZE - 1;
1899 ering->rx_pending = bp->rx_pending;
1900
1901 /* XXX ethtool lacks a tx_max_pending, oops... */
1902}
1903
1904static int b44_set_ringparam(struct net_device *dev,
1905 struct ethtool_ringparam *ering)
1906{
1907 struct b44 *bp = netdev_priv(dev);
1908
1909 if ((ering->rx_pending > B44_RX_RING_SIZE - 1) ||
1910 (ering->rx_mini_pending != 0) ||
1911 (ering->rx_jumbo_pending != 0) ||
1912 (ering->tx_pending > B44_TX_RING_SIZE - 1))
1913 return -EINVAL;
1914
1915 spin_lock_irq(&bp->lock);
1916
1917 bp->rx_pending = ering->rx_pending;
1918 bp->tx_pending = ering->tx_pending;
1919
1920 b44_halt(bp);
1921 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001922 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923 netif_wake_queue(bp->dev);
1924 spin_unlock_irq(&bp->lock);
1925
1926 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001927
Linus Torvalds1da177e2005-04-16 15:20:36 -07001928 return 0;
1929}
1930
1931static void b44_get_pauseparam(struct net_device *dev,
1932 struct ethtool_pauseparam *epause)
1933{
1934 struct b44 *bp = netdev_priv(dev);
1935
1936 epause->autoneg =
1937 (bp->flags & B44_FLAG_PAUSE_AUTO) != 0;
1938 epause->rx_pause =
1939 (bp->flags & B44_FLAG_RX_PAUSE) != 0;
1940 epause->tx_pause =
1941 (bp->flags & B44_FLAG_TX_PAUSE) != 0;
1942}
1943
1944static int b44_set_pauseparam(struct net_device *dev,
1945 struct ethtool_pauseparam *epause)
1946{
1947 struct b44 *bp = netdev_priv(dev);
1948
1949 spin_lock_irq(&bp->lock);
1950 if (epause->autoneg)
1951 bp->flags |= B44_FLAG_PAUSE_AUTO;
1952 else
1953 bp->flags &= ~B44_FLAG_PAUSE_AUTO;
1954 if (epause->rx_pause)
1955 bp->flags |= B44_FLAG_RX_PAUSE;
1956 else
1957 bp->flags &= ~B44_FLAG_RX_PAUSE;
1958 if (epause->tx_pause)
1959 bp->flags |= B44_FLAG_TX_PAUSE;
1960 else
1961 bp->flags &= ~B44_FLAG_TX_PAUSE;
1962 if (bp->flags & B44_FLAG_PAUSE_AUTO) {
1963 b44_halt(bp);
1964 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08001965 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001966 } else {
1967 __b44_set_flow_ctrl(bp, bp->flags);
1968 }
1969 spin_unlock_irq(&bp->lock);
1970
1971 b44_enable_ints(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04001972
Linus Torvalds1da177e2005-04-16 15:20:36 -07001973 return 0;
1974}
1975
Francois Romieu33539302005-11-07 01:51:34 +01001976static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1977{
1978 switch(stringset) {
1979 case ETH_SS_STATS:
1980 memcpy(data, *b44_gstrings, sizeof(b44_gstrings));
1981 break;
1982 }
1983}
1984
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001985static int b44_get_sset_count(struct net_device *dev, int sset)
Francois Romieu33539302005-11-07 01:51:34 +01001986{
Jeff Garzikb9f2c042007-10-03 18:07:32 -07001987 switch (sset) {
1988 case ETH_SS_STATS:
1989 return ARRAY_SIZE(b44_gstrings);
1990 default:
1991 return -EOPNOTSUPP;
1992 }
Francois Romieu33539302005-11-07 01:51:34 +01001993}
1994
1995static void b44_get_ethtool_stats(struct net_device *dev,
1996 struct ethtool_stats *stats, u64 *data)
1997{
1998 struct b44 *bp = netdev_priv(dev);
1999 u32 *val = &bp->hw_stats.tx_good_octets;
2000 u32 i;
2001
2002 spin_lock_irq(&bp->lock);
2003
2004 b44_stats_update(bp);
2005
2006 for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++)
2007 *data++ = *val++;
2008
2009 spin_unlock_irq(&bp->lock);
2010}
2011
Gary Zambrano52cafd92006-06-20 15:34:23 -07002012static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2013{
2014 struct b44 *bp = netdev_priv(dev);
2015
2016 wol->supported = WAKE_MAGIC;
2017 if (bp->flags & B44_FLAG_WOL_ENABLE)
2018 wol->wolopts = WAKE_MAGIC;
2019 else
2020 wol->wolopts = 0;
2021 memset(&wol->sopass, 0, sizeof(wol->sopass));
2022}
2023
2024static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
2025{
2026 struct b44 *bp = netdev_priv(dev);
2027
2028 spin_lock_irq(&bp->lock);
2029 if (wol->wolopts & WAKE_MAGIC)
2030 bp->flags |= B44_FLAG_WOL_ENABLE;
2031 else
2032 bp->flags &= ~B44_FLAG_WOL_ENABLE;
2033 spin_unlock_irq(&bp->lock);
2034
2035 return 0;
2036}
2037
Jeff Garzik7282d492006-09-13 14:30:00 -04002038static const struct ethtool_ops b44_ethtool_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039 .get_drvinfo = b44_get_drvinfo,
2040 .get_settings = b44_get_settings,
2041 .set_settings = b44_set_settings,
2042 .nway_reset = b44_nway_reset,
2043 .get_link = ethtool_op_get_link,
Gary Zambrano52cafd92006-06-20 15:34:23 -07002044 .get_wol = b44_get_wol,
2045 .set_wol = b44_set_wol,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002046 .get_ringparam = b44_get_ringparam,
2047 .set_ringparam = b44_set_ringparam,
2048 .get_pauseparam = b44_get_pauseparam,
2049 .set_pauseparam = b44_set_pauseparam,
2050 .get_msglevel = b44_get_msglevel,
2051 .set_msglevel = b44_set_msglevel,
Francois Romieu33539302005-11-07 01:51:34 +01002052 .get_strings = b44_get_strings,
Jeff Garzikb9f2c042007-10-03 18:07:32 -07002053 .get_sset_count = b44_get_sset_count,
Francois Romieu33539302005-11-07 01:51:34 +01002054 .get_ethtool_stats = b44_get_ethtool_stats,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002055};
2056
2057static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2058{
2059 struct mii_ioctl_data *data = if_mii(ifr);
2060 struct b44 *bp = netdev_priv(dev);
Francois Romieu34105722005-11-30 22:32:13 +01002061 int err = -EINVAL;
2062
2063 if (!netif_running(dev))
2064 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065
2066 spin_lock_irq(&bp->lock);
2067 err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL);
2068 spin_unlock_irq(&bp->lock);
Francois Romieu34105722005-11-30 22:32:13 +01002069out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002070 return err;
2071}
2072
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073static int __devinit b44_get_invariants(struct b44 *bp)
2074{
Michael Buesch753f4922007-09-19 14:20:30 -07002075 struct ssb_device *sdev = bp->sdev;
2076 int err = 0;
2077 u8 *addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078
Michael Buesch753f4922007-09-19 14:20:30 -07002079 bp->dma_offset = ssb_dma_translation(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002080
Michael Buesch753f4922007-09-19 14:20:30 -07002081 if (sdev->bus->bustype == SSB_BUSTYPE_SSB &&
2082 instance > 1) {
Larry Finger458414b2007-11-09 16:56:10 -06002083 addr = sdev->bus->sprom.et1mac;
2084 bp->phy_addr = sdev->bus->sprom.et1phyaddr;
Michael Buesch753f4922007-09-19 14:20:30 -07002085 } else {
Larry Finger458414b2007-11-09 16:56:10 -06002086 addr = sdev->bus->sprom.et0mac;
2087 bp->phy_addr = sdev->bus->sprom.et0phyaddr;
Michael Buesch753f4922007-09-19 14:20:30 -07002088 }
Michael Buesch5ea79632008-03-25 18:04:46 +01002089 /* Some ROMs have buggy PHY addresses with the high
2090 * bits set (sign extension?). Truncate them to a
2091 * valid PHY address. */
2092 bp->phy_addr &= 0x1F;
2093
Michael Buesch753f4922007-09-19 14:20:30 -07002094 memcpy(bp->dev->dev_addr, addr, 6);
Gary Zambrano391fc092006-03-28 14:57:38 -08002095
2096 if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){
2097 printk(KERN_ERR PFX "Invalid MAC address found in EEPROM\n");
2098 return -EINVAL;
2099 }
2100
John W. Linville2160de52005-09-12 10:48:55 -04002101 memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103 bp->imask = IMASK_DEF;
2104
Jeff Garzik10badc22006-04-12 18:04:32 -04002105 /* XXX - really required?
Linus Torvalds1da177e2005-04-16 15:20:36 -07002106 bp->flags |= B44_FLAG_BUGGY_TXPTR;
Michael Buesch753f4922007-09-19 14:20:30 -07002107 */
Gary Zambrano52cafd92006-06-20 15:34:23 -07002108
Michael Buesch753f4922007-09-19 14:20:30 -07002109 if (bp->sdev->id.revision >= 7)
2110 bp->flags |= B44_FLAG_B0_ANDLATER;
Gary Zambrano52cafd92006-06-20 15:34:23 -07002111
Linus Torvalds1da177e2005-04-16 15:20:36 -07002112 return err;
2113}
2114
Stephen Hemminger403413e2009-01-07 18:10:49 -08002115static const struct net_device_ops b44_netdev_ops = {
2116 .ndo_open = b44_open,
2117 .ndo_stop = b44_close,
2118 .ndo_start_xmit = b44_start_xmit,
2119 .ndo_get_stats = b44_get_stats,
2120 .ndo_set_multicast_list = b44_set_rx_mode,
2121 .ndo_set_mac_address = b44_set_mac_addr,
2122 .ndo_validate_addr = eth_validate_addr,
2123 .ndo_do_ioctl = b44_ioctl,
2124 .ndo_tx_timeout = b44_tx_timeout,
2125 .ndo_change_mtu = b44_change_mtu,
2126#ifdef CONFIG_NET_POLL_CONTROLLER
2127 .ndo_poll_controller = b44_poll_controller,
2128#endif
2129};
2130
Michael Buesch753f4922007-09-19 14:20:30 -07002131static int __devinit b44_init_one(struct ssb_device *sdev,
2132 const struct ssb_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133{
2134 static int b44_version_printed = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002135 struct net_device *dev;
2136 struct b44 *bp;
Joe Perches0795af52007-10-03 17:59:30 -07002137 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138
Michael Buesch753f4922007-09-19 14:20:30 -07002139 instance++;
2140
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141 if (b44_version_printed++ == 0)
2142 printk(KERN_INFO "%s", version);
2143
Linus Torvalds1da177e2005-04-16 15:20:36 -07002144
2145 dev = alloc_etherdev(sizeof(*bp));
2146 if (!dev) {
Michael Buesch753f4922007-09-19 14:20:30 -07002147 dev_err(sdev->dev, "Etherdev alloc failed, aborting.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002148 err = -ENOMEM;
Michael Buesch753f4922007-09-19 14:20:30 -07002149 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002150 }
2151
Michael Buesch753f4922007-09-19 14:20:30 -07002152 SET_NETDEV_DEV(dev, sdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153
2154 /* No interesting netdevice features in this card... */
2155 dev->features |= 0;
2156
2157 bp = netdev_priv(dev);
Michael Buesch753f4922007-09-19 14:20:30 -07002158 bp->sdev = sdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159 bp->dev = dev;
Eric Dumazeta58c8912009-01-15 15:29:35 -08002160 bp->force_copybreak = 0;
Francois Romieu874a6212005-11-07 01:50:46 +01002161
2162 bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002163
2164 spin_lock_init(&bp->lock);
2165
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166 bp->rx_pending = B44_DEF_RX_RING_PENDING;
2167 bp->tx_pending = B44_DEF_TX_RING_PENDING;
2168
Stephen Hemminger403413e2009-01-07 18:10:49 -08002169 dev->netdev_ops = &b44_netdev_ops;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07002170 netif_napi_add(dev, &bp->napi, b44_poll, 64);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002171 dev->watchdog_timeo = B44_TX_TIMEOUT;
Michael Buesch753f4922007-09-19 14:20:30 -07002172 dev->irq = sdev->irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173 SET_ETHTOOL_OPS(dev, &b44_ethtool_ops);
2174
Stephen Hemmingerc35ca392006-01-20 21:13:17 -08002175 netif_carrier_off(dev);
2176
Michael Buesch753f4922007-09-19 14:20:30 -07002177 err = ssb_bus_powerup(sdev->bus, 0);
2178 if (err) {
2179 dev_err(sdev->dev,
2180 "Failed to powerup the bus\n");
2181 goto err_out_free_dev;
2182 }
Yang Hongyang28b76792009-04-06 19:01:17 -07002183 err = ssb_dma_set_mask(sdev, DMA_BIT_MASK(30));
Michael Buesch753f4922007-09-19 14:20:30 -07002184 if (err) {
2185 dev_err(sdev->dev,
2186 "Required 30BIT DMA mask unsupported by the system.\n");
2187 goto err_out_powerdown;
2188 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002189 err = b44_get_invariants(bp);
2190 if (err) {
Michael Buesch753f4922007-09-19 14:20:30 -07002191 dev_err(sdev->dev,
Jeff Garzik2e8a5382006-06-27 10:47:51 -04002192 "Problem fetching invariants of chip, aborting.\n");
Michael Buesch753f4922007-09-19 14:20:30 -07002193 goto err_out_powerdown;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194 }
2195
2196 bp->mii_if.dev = dev;
2197 bp->mii_if.mdio_read = b44_mii_read;
2198 bp->mii_if.mdio_write = b44_mii_write;
2199 bp->mii_if.phy_id = bp->phy_addr;
2200 bp->mii_if.phy_id_mask = 0x1f;
2201 bp->mii_if.reg_num_mask = 0x1f;
2202
2203 /* By default, advertise all speed/duplex settings. */
2204 bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL |
2205 B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL);
2206
2207 /* By default, auto-negotiate PAUSE. */
2208 bp->flags |= B44_FLAG_PAUSE_AUTO;
2209
2210 err = register_netdev(dev);
2211 if (err) {
Michael Buesch753f4922007-09-19 14:20:30 -07002212 dev_err(sdev->dev, "Cannot register net device, aborting.\n");
2213 goto err_out_powerdown;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002214 }
2215
Michael Buesch753f4922007-09-19 14:20:30 -07002216 ssb_set_drvdata(sdev, dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002217
Jeff Garzik10badc22006-04-12 18:04:32 -04002218 /* Chip reset provides power to the b44 MAC & PCI cores, which
Gary Zambrano5c513122006-03-29 17:12:05 -05002219 * is necessary for MAC register access.
Jeff Garzik10badc22006-04-12 18:04:32 -04002220 */
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002221 b44_chip_reset(bp, B44_CHIP_RESET_FULL);
Gary Zambrano5c513122006-03-29 17:12:05 -05002222
Johannes Berge1749612008-10-27 15:59:26 -07002223 printk(KERN_INFO "%s: Broadcom 44xx/47xx 10/100BaseT Ethernet %pM\n",
2224 dev->name, dev->dev_addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002225
2226 return 0;
2227
Michael Buesch753f4922007-09-19 14:20:30 -07002228err_out_powerdown:
2229 ssb_bus_may_powerdown(sdev->bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002230
2231err_out_free_dev:
2232 free_netdev(dev);
2233
Michael Buesch753f4922007-09-19 14:20:30 -07002234out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002235 return err;
2236}
2237
Michael Buesch753f4922007-09-19 14:20:30 -07002238static void __devexit b44_remove_one(struct ssb_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002239{
Michael Buesch753f4922007-09-19 14:20:30 -07002240 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002241
Francois Romieu874a6212005-11-07 01:50:46 +01002242 unregister_netdev(dev);
Michael Buesche92aa632009-02-26 22:35:02 -08002243 ssb_device_disable(sdev, 0);
Michael Buesch753f4922007-09-19 14:20:30 -07002244 ssb_bus_may_powerdown(sdev->bus);
Francois Romieu874a6212005-11-07 01:50:46 +01002245 free_netdev(dev);
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002246 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
Michael Buesch753f4922007-09-19 14:20:30 -07002247 ssb_set_drvdata(sdev, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002248}
2249
Michael Buesch753f4922007-09-19 14:20:30 -07002250static int b44_suspend(struct ssb_device *sdev, pm_message_t state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002251{
Michael Buesch753f4922007-09-19 14:20:30 -07002252 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002253 struct b44 *bp = netdev_priv(dev);
2254
Michael Buesch753f4922007-09-19 14:20:30 -07002255 if (!netif_running(dev))
2256 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002257
2258 del_timer_sync(&bp->timer);
2259
Jeff Garzik10badc22006-04-12 18:04:32 -04002260 spin_lock_irq(&bp->lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002261
2262 b44_halt(bp);
Jeff Garzik10badc22006-04-12 18:04:32 -04002263 netif_carrier_off(bp->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002264 netif_device_detach(bp->dev);
2265 b44_free_rings(bp);
2266
2267 spin_unlock_irq(&bp->lock);
Pavel Machek46e17852005-10-28 15:14:47 -07002268
2269 free_irq(dev->irq, dev);
Gary Zambrano52cafd92006-06-20 15:34:23 -07002270 if (bp->flags & B44_FLAG_WOL_ENABLE) {
Michael Chan5fc7d612007-01-26 23:59:57 -08002271 b44_init_hw(bp, B44_PARTIAL_RESET);
Gary Zambrano52cafd92006-06-20 15:34:23 -07002272 b44_setup_wol(bp);
2273 }
Michael Buesch753f4922007-09-19 14:20:30 -07002274
Miguel Botónfedb0ee2008-01-01 01:17:54 +01002275 ssb_pcihost_set_power_state(sdev, PCI_D3hot);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002276 return 0;
2277}
2278
Michael Buesch753f4922007-09-19 14:20:30 -07002279static int b44_resume(struct ssb_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280{
Michael Buesch753f4922007-09-19 14:20:30 -07002281 struct net_device *dev = ssb_get_drvdata(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002282 struct b44 *bp = netdev_priv(dev);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002283 int rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002284
Michael Buesch753f4922007-09-19 14:20:30 -07002285 rc = ssb_bus_powerup(sdev->bus, 0);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002286 if (rc) {
Michael Buesch753f4922007-09-19 14:20:30 -07002287 dev_err(sdev->dev,
2288 "Failed to powerup the bus\n");
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002289 return rc;
2290 }
2291
Linus Torvalds1da177e2005-04-16 15:20:36 -07002292 if (!netif_running(dev))
2293 return 0;
2294
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002295 rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev);
2296 if (rc) {
Pavel Machek46e17852005-10-28 15:14:47 -07002297 printk(KERN_ERR PFX "%s: request_irq failed\n", dev->name);
Dmitriy Monakhov90afd0e2007-01-27 00:00:03 -08002298 return rc;
2299 }
Pavel Machek46e17852005-10-28 15:14:47 -07002300
Linus Torvalds1da177e2005-04-16 15:20:36 -07002301 spin_lock_irq(&bp->lock);
2302
2303 b44_init_rings(bp);
Michael Chan5fc7d612007-01-26 23:59:57 -08002304 b44_init_hw(bp, B44_FULL_RESET);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002305 netif_device_attach(bp->dev);
2306 spin_unlock_irq(&bp->lock);
2307
Linus Torvalds1da177e2005-04-16 15:20:36 -07002308 b44_enable_ints(bp);
Mark Lordd9e2d182005-11-30 22:30:23 +01002309 netif_wake_queue(dev);
Stephen Hemmingera72a8172007-06-04 13:25:37 -07002310
2311 mod_timer(&bp->timer, jiffies + 1);
2312
Linus Torvalds1da177e2005-04-16 15:20:36 -07002313 return 0;
2314}
2315
Michael Buesch753f4922007-09-19 14:20:30 -07002316static struct ssb_driver b44_ssb_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002317 .name = DRV_MODULE_NAME,
Michael Buesch753f4922007-09-19 14:20:30 -07002318 .id_table = b44_ssb_tbl,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002319 .probe = b44_init_one,
2320 .remove = __devexit_p(b44_remove_one),
Michael Buesch753f4922007-09-19 14:20:30 -07002321 .suspend = b44_suspend,
2322 .resume = b44_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002323};
2324
Michael Buesch753f4922007-09-19 14:20:30 -07002325static inline int b44_pci_init(void)
2326{
2327 int err = 0;
2328#ifdef CONFIG_B44_PCI
2329 err = ssb_pcihost_register(&b44_pci_driver);
2330#endif
2331 return err;
2332}
2333
2334static inline void b44_pci_exit(void)
2335{
2336#ifdef CONFIG_B44_PCI
2337 ssb_pcihost_unregister(&b44_pci_driver);
2338#endif
2339}
2340
Linus Torvalds1da177e2005-04-16 15:20:36 -07002341static int __init b44_init(void)
2342{
John W. Linville9f38c632005-10-18 21:30:59 -04002343 unsigned int dma_desc_align_size = dma_get_cache_alignment();
Michael Buesch753f4922007-09-19 14:20:30 -07002344 int err;
John W. Linville9f38c632005-10-18 21:30:59 -04002345
2346 /* Setup paramaters for syncing RX/TX DMA descriptors */
2347 dma_desc_align_mask = ~(dma_desc_align_size - 1);
Alan Cox22d4d772006-01-17 17:53:56 +00002348 dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc));
John W. Linville9f38c632005-10-18 21:30:59 -04002349
Michael Buesch753f4922007-09-19 14:20:30 -07002350 err = b44_pci_init();
2351 if (err)
2352 return err;
2353 err = ssb_driver_register(&b44_ssb_driver);
2354 if (err)
2355 b44_pci_exit();
2356 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357}
2358
2359static void __exit b44_cleanup(void)
2360{
Michael Buesch753f4922007-09-19 14:20:30 -07002361 ssb_driver_unregister(&b44_ssb_driver);
2362 b44_pci_exit();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002363}
2364
2365module_init(b44_init);
2366module_exit(b44_cleanup);
2367