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Commit | Line | Data |
---|---|---|
753f4920 | 1 | /* b44.c: Broadcom 44xx/47xx Fast Ethernet device driver. |
1da177e4 LT |
2 | * |
3 | * Copyright (C) 2002 David S. Miller (davem@redhat.com) | |
753f4920 MB |
4 | * Copyright (C) 2004 Pekka Pietikainen (pp@ee.oulu.fi) |
5 | * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org) | |
6 | * Copyright (C) 2006 Felix Fietkau (nbd@openwrt.org) | |
8056bfaf | 7 | * Copyright (C) 2006 Broadcom Corporation. |
753f4920 | 8 | * Copyright (C) 2007 Michael Buesch <mb@bu3sch.de> |
1da177e4 LT |
9 | * |
10 | * Distribute under GPL. | |
11 | */ | |
12 | ||
2fc96fff JP |
13 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
14 | ||
1da177e4 LT |
15 | #include <linux/kernel.h> |
16 | #include <linux/module.h> | |
17 | #include <linux/moduleparam.h> | |
18 | #include <linux/types.h> | |
19 | #include <linux/netdevice.h> | |
20 | #include <linux/ethtool.h> | |
21 | #include <linux/mii.h> | |
22 | #include <linux/if_ether.h> | |
72f4861e | 23 | #include <linux/if_vlan.h> |
1da177e4 LT |
24 | #include <linux/etherdevice.h> |
25 | #include <linux/pci.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/init.h> | |
89358f90 | 28 | #include <linux/dma-mapping.h> |
753f4920 | 29 | #include <linux/ssb/ssb.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
1da177e4 LT |
31 | |
32 | #include <asm/uaccess.h> | |
33 | #include <asm/io.h> | |
34 | #include <asm/irq.h> | |
35 | ||
753f4920 | 36 | |
1da177e4 LT |
37 | #include "b44.h" |
38 | ||
39 | #define DRV_MODULE_NAME "b44" | |
753f4920 | 40 | #define DRV_MODULE_VERSION "2.0" |
1da177e4 LT |
41 | |
42 | #define B44_DEF_MSG_ENABLE \ | |
43 | (NETIF_MSG_DRV | \ | |
44 | NETIF_MSG_PROBE | \ | |
45 | NETIF_MSG_LINK | \ | |
46 | NETIF_MSG_TIMER | \ | |
47 | NETIF_MSG_IFDOWN | \ | |
48 | NETIF_MSG_IFUP | \ | |
49 | NETIF_MSG_RX_ERR | \ | |
50 | NETIF_MSG_TX_ERR) | |
51 | ||
52 | /* length of time before we decide the hardware is borked, | |
53 | * and dev->tx_timeout() should be called to fix the problem | |
54 | */ | |
55 | #define B44_TX_TIMEOUT (5 * HZ) | |
56 | ||
57 | /* hardware minimum and maximum for a single frame's data payload */ | |
58 | #define B44_MIN_MTU 60 | |
59 | #define B44_MAX_MTU 1500 | |
60 | ||
61 | #define B44_RX_RING_SIZE 512 | |
62 | #define B44_DEF_RX_RING_PENDING 200 | |
63 | #define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \ | |
64 | B44_RX_RING_SIZE) | |
65 | #define B44_TX_RING_SIZE 512 | |
66 | #define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1) | |
67 | #define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \ | |
68 | B44_TX_RING_SIZE) | |
1da177e4 LT |
69 | |
70 | #define TX_RING_GAP(BP) \ | |
71 | (B44_TX_RING_SIZE - (BP)->tx_pending) | |
72 | #define TX_BUFFS_AVAIL(BP) \ | |
73 | (((BP)->tx_cons <= (BP)->tx_prod) ? \ | |
74 | (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \ | |
75 | (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP)) | |
76 | #define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1)) | |
77 | ||
4ca85795 FF |
78 | #define RX_PKT_OFFSET (RX_HEADER_LEN + 2) |
79 | #define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET) | |
1da177e4 LT |
80 | |
81 | /* minimum number of free TX descriptors required to wake up TX process */ | |
82 | #define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4) | |
83 | ||
725ad800 GZ |
84 | /* b44 internal pattern match filter info */ |
85 | #define B44_PATTERN_BASE 0x400 | |
86 | #define B44_PATTERN_SIZE 0x80 | |
87 | #define B44_PMASK_BASE 0x600 | |
88 | #define B44_PMASK_SIZE 0x10 | |
89 | #define B44_MAX_PATTERNS 16 | |
90 | #define B44_ETHIPV6UDP_HLEN 62 | |
91 | #define B44_ETHIPV4UDP_HLEN 42 | |
92 | ||
1da177e4 | 93 | static char version[] __devinitdata = |
753f4920 | 94 | DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION "\n"; |
1da177e4 | 95 | |
753f4920 MB |
96 | MODULE_AUTHOR("Felix Fietkau, Florian Schirmer, Pekka Pietikainen, David S. Miller"); |
97 | MODULE_DESCRIPTION("Broadcom 44xx/47xx 10/100 PCI ethernet driver"); | |
1da177e4 LT |
98 | MODULE_LICENSE("GPL"); |
99 | MODULE_VERSION(DRV_MODULE_VERSION); | |
100 | ||
101 | static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */ | |
102 | module_param(b44_debug, int, 0); | |
103 | MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value"); | |
104 | ||
1da177e4 | 105 | |
753f4920 | 106 | #ifdef CONFIG_B44_PCI |
a3aa1884 | 107 | static DEFINE_PCI_DEVICE_TABLE(b44_pci_tbl) = { |
753f4920 MB |
108 | { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401) }, |
109 | { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0) }, | |
110 | { PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1) }, | |
111 | { 0 } /* terminate list with empty entry */ | |
112 | }; | |
1da177e4 LT |
113 | MODULE_DEVICE_TABLE(pci, b44_pci_tbl); |
114 | ||
753f4920 MB |
115 | static struct pci_driver b44_pci_driver = { |
116 | .name = DRV_MODULE_NAME, | |
117 | .id_table = b44_pci_tbl, | |
118 | }; | |
119 | #endif /* CONFIG_B44_PCI */ | |
120 | ||
121 | static const struct ssb_device_id b44_ssb_tbl[] = { | |
122 | SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_ETHERNET, SSB_ANY_REV), | |
123 | SSB_DEVTABLE_END | |
124 | }; | |
125 | MODULE_DEVICE_TABLE(ssb, b44_ssb_tbl); | |
126 | ||
1da177e4 LT |
127 | static void b44_halt(struct b44 *); |
128 | static void b44_init_rings(struct b44 *); | |
5fc7d61a MC |
129 | |
130 | #define B44_FULL_RESET 1 | |
131 | #define B44_FULL_RESET_SKIP_PHY 2 | |
132 | #define B44_PARTIAL_RESET 3 | |
fedb0eef MB |
133 | #define B44_CHIP_RESET_FULL 4 |
134 | #define B44_CHIP_RESET_PARTIAL 5 | |
5fc7d61a | 135 | |
00e8b3aa | 136 | static void b44_init_hw(struct b44 *, int); |
1da177e4 | 137 | |
9f38c636 | 138 | static int dma_desc_sync_size; |
753f4920 | 139 | static int instance; |
9f38c636 | 140 | |
3353930d FR |
141 | static const char b44_gstrings[][ETH_GSTRING_LEN] = { |
142 | #define _B44(x...) # x, | |
143 | B44_STAT_REG_DECLARE | |
144 | #undef _B44 | |
145 | }; | |
146 | ||
753f4920 MB |
147 | static inline void b44_sync_dma_desc_for_device(struct ssb_device *sdev, |
148 | dma_addr_t dma_base, | |
149 | unsigned long offset, | |
150 | enum dma_data_direction dir) | |
9f38c636 | 151 | { |
39a6f4bc FT |
152 | dma_sync_single_for_device(sdev->dma_dev, dma_base + offset, |
153 | dma_desc_sync_size, dir); | |
9f38c636 JL |
154 | } |
155 | ||
753f4920 MB |
156 | static inline void b44_sync_dma_desc_for_cpu(struct ssb_device *sdev, |
157 | dma_addr_t dma_base, | |
158 | unsigned long offset, | |
159 | enum dma_data_direction dir) | |
9f38c636 | 160 | { |
39a6f4bc FT |
161 | dma_sync_single_for_cpu(sdev->dma_dev, dma_base + offset, |
162 | dma_desc_sync_size, dir); | |
9f38c636 JL |
163 | } |
164 | ||
1da177e4 LT |
165 | static inline unsigned long br32(const struct b44 *bp, unsigned long reg) |
166 | { | |
753f4920 | 167 | return ssb_read32(bp->sdev, reg); |
1da177e4 LT |
168 | } |
169 | ||
10badc21 | 170 | static inline void bw32(const struct b44 *bp, |
1da177e4 LT |
171 | unsigned long reg, unsigned long val) |
172 | { | |
753f4920 | 173 | ssb_write32(bp->sdev, reg, val); |
1da177e4 LT |
174 | } |
175 | ||
176 | static int b44_wait_bit(struct b44 *bp, unsigned long reg, | |
177 | u32 bit, unsigned long timeout, const int clear) | |
178 | { | |
179 | unsigned long i; | |
180 | ||
181 | for (i = 0; i < timeout; i++) { | |
182 | u32 val = br32(bp, reg); | |
183 | ||
184 | if (clear && !(val & bit)) | |
185 | break; | |
186 | if (!clear && (val & bit)) | |
187 | break; | |
188 | udelay(10); | |
189 | } | |
190 | if (i == timeout) { | |
f6ca057f | 191 | if (net_ratelimit()) |
2fc96fff JP |
192 | netdev_err(bp->dev, "BUG! Timeout waiting for bit %08x of register %lx to %s\n", |
193 | bit, reg, clear ? "clear" : "set"); | |
194 | ||
1da177e4 LT |
195 | return -ENODEV; |
196 | } | |
197 | return 0; | |
198 | } | |
199 | ||
753f4920 | 200 | static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index) |
1da177e4 LT |
201 | { |
202 | u32 val; | |
203 | ||
753f4920 MB |
204 | bw32(bp, B44_CAM_CTRL, (CAM_CTRL_READ | |
205 | (index << CAM_CTRL_INDEX_SHIFT))); | |
1da177e4 | 206 | |
753f4920 | 207 | b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1); |
1da177e4 | 208 | |
753f4920 | 209 | val = br32(bp, B44_CAM_DATA_LO); |
1da177e4 | 210 | |
753f4920 MB |
211 | data[2] = (val >> 24) & 0xFF; |
212 | data[3] = (val >> 16) & 0xFF; | |
213 | data[4] = (val >> 8) & 0xFF; | |
214 | data[5] = (val >> 0) & 0xFF; | |
1da177e4 | 215 | |
753f4920 | 216 | val = br32(bp, B44_CAM_DATA_HI); |
1da177e4 | 217 | |
753f4920 MB |
218 | data[0] = (val >> 8) & 0xFF; |
219 | data[1] = (val >> 0) & 0xFF; | |
1da177e4 LT |
220 | } |
221 | ||
753f4920 | 222 | static inline void __b44_cam_write(struct b44 *bp, unsigned char *data, int index) |
1da177e4 LT |
223 | { |
224 | u32 val; | |
225 | ||
226 | val = ((u32) data[2]) << 24; | |
227 | val |= ((u32) data[3]) << 16; | |
228 | val |= ((u32) data[4]) << 8; | |
229 | val |= ((u32) data[5]) << 0; | |
230 | bw32(bp, B44_CAM_DATA_LO, val); | |
10badc21 | 231 | val = (CAM_DATA_HI_VALID | |
1da177e4 LT |
232 | (((u32) data[0]) << 8) | |
233 | (((u32) data[1]) << 0)); | |
234 | bw32(bp, B44_CAM_DATA_HI, val); | |
235 | bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE | | |
236 | (index << CAM_CTRL_INDEX_SHIFT))); | |
10badc21 | 237 | b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1); |
1da177e4 LT |
238 | } |
239 | ||
240 | static inline void __b44_disable_ints(struct b44 *bp) | |
241 | { | |
242 | bw32(bp, B44_IMASK, 0); | |
243 | } | |
244 | ||
245 | static void b44_disable_ints(struct b44 *bp) | |
246 | { | |
247 | __b44_disable_ints(bp); | |
248 | ||
249 | /* Flush posted writes. */ | |
250 | br32(bp, B44_IMASK); | |
251 | } | |
252 | ||
253 | static void b44_enable_ints(struct b44 *bp) | |
254 | { | |
255 | bw32(bp, B44_IMASK, bp->imask); | |
256 | } | |
257 | ||
753f4920 | 258 | static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val) |
1da177e4 LT |
259 | { |
260 | int err; | |
261 | ||
262 | bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); | |
263 | bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | | |
264 | (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) | | |
753f4920 | 265 | (phy_addr << MDIO_DATA_PMD_SHIFT) | |
1da177e4 LT |
266 | (reg << MDIO_DATA_RA_SHIFT) | |
267 | (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT))); | |
268 | err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); | |
269 | *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA; | |
270 | ||
271 | return err; | |
272 | } | |
273 | ||
753f4920 | 274 | static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val) |
1da177e4 LT |
275 | { |
276 | bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); | |
277 | bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | | |
278 | (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) | | |
753f4920 | 279 | (phy_addr << MDIO_DATA_PMD_SHIFT) | |
1da177e4 LT |
280 | (reg << MDIO_DATA_RA_SHIFT) | |
281 | (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) | | |
282 | (val & MDIO_DATA_DATA))); | |
283 | return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); | |
284 | } | |
285 | ||
753f4920 MB |
286 | static inline int b44_readphy(struct b44 *bp, int reg, u32 *val) |
287 | { | |
288 | if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) | |
289 | return 0; | |
290 | ||
291 | return __b44_readphy(bp, bp->phy_addr, reg, val); | |
292 | } | |
293 | ||
294 | static inline int b44_writephy(struct b44 *bp, int reg, u32 val) | |
295 | { | |
296 | if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) | |
297 | return 0; | |
298 | ||
299 | return __b44_writephy(bp, bp->phy_addr, reg, val); | |
300 | } | |
301 | ||
1da177e4 | 302 | /* miilib interface */ |
1da177e4 LT |
303 | static int b44_mii_read(struct net_device *dev, int phy_id, int location) |
304 | { | |
305 | u32 val; | |
306 | struct b44 *bp = netdev_priv(dev); | |
753f4920 | 307 | int rc = __b44_readphy(bp, phy_id, location, &val); |
1da177e4 LT |
308 | if (rc) |
309 | return 0xffffffff; | |
310 | return val; | |
311 | } | |
312 | ||
313 | static void b44_mii_write(struct net_device *dev, int phy_id, int location, | |
314 | int val) | |
315 | { | |
316 | struct b44 *bp = netdev_priv(dev); | |
753f4920 | 317 | __b44_writephy(bp, phy_id, location, val); |
1da177e4 LT |
318 | } |
319 | ||
320 | static int b44_phy_reset(struct b44 *bp) | |
321 | { | |
322 | u32 val; | |
323 | int err; | |
324 | ||
753f4920 MB |
325 | if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) |
326 | return 0; | |
1da177e4 LT |
327 | err = b44_writephy(bp, MII_BMCR, BMCR_RESET); |
328 | if (err) | |
329 | return err; | |
330 | udelay(100); | |
331 | err = b44_readphy(bp, MII_BMCR, &val); | |
332 | if (!err) { | |
333 | if (val & BMCR_RESET) { | |
2fc96fff | 334 | netdev_err(bp->dev, "PHY Reset would not complete\n"); |
1da177e4 LT |
335 | err = -ENODEV; |
336 | } | |
337 | } | |
338 | ||
8850dce1 | 339 | return err; |
1da177e4 LT |
340 | } |
341 | ||
342 | static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags) | |
343 | { | |
344 | u32 val; | |
345 | ||
346 | bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE); | |
347 | bp->flags |= pause_flags; | |
348 | ||
349 | val = br32(bp, B44_RXCONFIG); | |
350 | if (pause_flags & B44_FLAG_RX_PAUSE) | |
351 | val |= RXCONFIG_FLOW; | |
352 | else | |
353 | val &= ~RXCONFIG_FLOW; | |
354 | bw32(bp, B44_RXCONFIG, val); | |
355 | ||
356 | val = br32(bp, B44_MAC_FLOW); | |
357 | if (pause_flags & B44_FLAG_TX_PAUSE) | |
358 | val |= (MAC_FLOW_PAUSE_ENAB | | |
359 | (0xc0 & MAC_FLOW_RX_HI_WATER)); | |
360 | else | |
361 | val &= ~MAC_FLOW_PAUSE_ENAB; | |
362 | bw32(bp, B44_MAC_FLOW, val); | |
363 | } | |
364 | ||
365 | static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote) | |
366 | { | |
10badc21 | 367 | u32 pause_enab = 0; |
2b474cf5 GZ |
368 | |
369 | /* The driver supports only rx pause by default because | |
10badc21 JG |
370 | the b44 mac tx pause mechanism generates excessive |
371 | pause frames. | |
2b474cf5 GZ |
372 | Use ethtool to turn on b44 tx pause if necessary. |
373 | */ | |
374 | if ((local & ADVERTISE_PAUSE_CAP) && | |
10badc21 | 375 | (local & ADVERTISE_PAUSE_ASYM)){ |
2b474cf5 GZ |
376 | if ((remote & LPA_PAUSE_ASYM) && |
377 | !(remote & LPA_PAUSE_CAP)) | |
378 | pause_enab |= B44_FLAG_RX_PAUSE; | |
1da177e4 LT |
379 | } |
380 | ||
381 | __b44_set_flow_ctrl(bp, pause_enab); | |
382 | } | |
383 | ||
6c08af03 HM |
384 | #ifdef CONFIG_BCM47XX |
385 | #include <asm/mach-bcm47xx/nvram.h> | |
753f4920 MB |
386 | static void b44_wap54g10_workaround(struct b44 *bp) |
387 | { | |
6c08af03 | 388 | char buf[20]; |
753f4920 MB |
389 | u32 val; |
390 | int err; | |
391 | ||
392 | /* | |
393 | * workaround for bad hardware design in Linksys WAP54G v1.0 | |
394 | * see https://dev.openwrt.org/ticket/146 | |
395 | * check and reset bit "isolate" | |
396 | */ | |
6c08af03 | 397 | if (nvram_getenv("boardnum", buf, sizeof(buf)) < 0) |
753f4920 | 398 | return; |
6c08af03 | 399 | if (simple_strtoul(buf, NULL, 0) == 2) { |
753f4920 MB |
400 | err = __b44_readphy(bp, 0, MII_BMCR, &val); |
401 | if (err) | |
402 | goto error; | |
403 | if (!(val & BMCR_ISOLATE)) | |
404 | return; | |
405 | val &= ~BMCR_ISOLATE; | |
406 | err = __b44_writephy(bp, 0, MII_BMCR, val); | |
407 | if (err) | |
408 | goto error; | |
409 | } | |
410 | return; | |
411 | error: | |
2fc96fff | 412 | pr_warning("PHY: cannot reset MII transceiver isolate bit\n"); |
753f4920 MB |
413 | } |
414 | #else | |
415 | static inline void b44_wap54g10_workaround(struct b44 *bp) | |
416 | { | |
417 | } | |
418 | #endif | |
419 | ||
1da177e4 LT |
420 | static int b44_setup_phy(struct b44 *bp) |
421 | { | |
422 | u32 val; | |
423 | int err; | |
424 | ||
753f4920 MB |
425 | b44_wap54g10_workaround(bp); |
426 | ||
427 | if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) | |
428 | return 0; | |
1da177e4 LT |
429 | if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0) |
430 | goto out; | |
431 | if ((err = b44_writephy(bp, B44_MII_ALEDCTRL, | |
432 | val & MII_ALEDCTRL_ALLMSK)) != 0) | |
433 | goto out; | |
434 | if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0) | |
435 | goto out; | |
436 | if ((err = b44_writephy(bp, B44_MII_TLEDCTRL, | |
437 | val | MII_TLEDCTRL_ENABLE)) != 0) | |
438 | goto out; | |
439 | ||
440 | if (!(bp->flags & B44_FLAG_FORCE_LINK)) { | |
441 | u32 adv = ADVERTISE_CSMA; | |
442 | ||
443 | if (bp->flags & B44_FLAG_ADV_10HALF) | |
444 | adv |= ADVERTISE_10HALF; | |
445 | if (bp->flags & B44_FLAG_ADV_10FULL) | |
446 | adv |= ADVERTISE_10FULL; | |
447 | if (bp->flags & B44_FLAG_ADV_100HALF) | |
448 | adv |= ADVERTISE_100HALF; | |
449 | if (bp->flags & B44_FLAG_ADV_100FULL) | |
450 | adv |= ADVERTISE_100FULL; | |
451 | ||
452 | if (bp->flags & B44_FLAG_PAUSE_AUTO) | |
453 | adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; | |
454 | ||
455 | if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0) | |
456 | goto out; | |
457 | if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE | | |
458 | BMCR_ANRESTART))) != 0) | |
459 | goto out; | |
460 | } else { | |
461 | u32 bmcr; | |
462 | ||
463 | if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0) | |
464 | goto out; | |
465 | bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100); | |
466 | if (bp->flags & B44_FLAG_100_BASE_T) | |
467 | bmcr |= BMCR_SPEED100; | |
468 | if (bp->flags & B44_FLAG_FULL_DUPLEX) | |
469 | bmcr |= BMCR_FULLDPLX; | |
470 | if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0) | |
471 | goto out; | |
472 | ||
473 | /* Since we will not be negotiating there is no safe way | |
474 | * to determine if the link partner supports flow control | |
475 | * or not. So just disable it completely in this case. | |
476 | */ | |
477 | b44_set_flow_ctrl(bp, 0, 0); | |
478 | } | |
479 | ||
480 | out: | |
481 | return err; | |
482 | } | |
483 | ||
484 | static void b44_stats_update(struct b44 *bp) | |
485 | { | |
486 | unsigned long reg; | |
487 | u32 *val; | |
488 | ||
489 | val = &bp->hw_stats.tx_good_octets; | |
490 | for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) { | |
491 | *val++ += br32(bp, reg); | |
492 | } | |
3353930d FR |
493 | |
494 | /* Pad */ | |
495 | reg += 8*4UL; | |
496 | ||
1da177e4 LT |
497 | for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) { |
498 | *val++ += br32(bp, reg); | |
499 | } | |
500 | } | |
501 | ||
502 | static void b44_link_report(struct b44 *bp) | |
503 | { | |
504 | if (!netif_carrier_ok(bp->dev)) { | |
2fc96fff | 505 | netdev_info(bp->dev, "Link is down\n"); |
1da177e4 | 506 | } else { |
2fc96fff JP |
507 | netdev_info(bp->dev, "Link is up at %d Mbps, %s duplex\n", |
508 | (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10, | |
509 | (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half"); | |
510 | ||
511 | netdev_info(bp->dev, "Flow control is %s for TX and %s for RX\n", | |
512 | (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off", | |
513 | (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off"); | |
1da177e4 LT |
514 | } |
515 | } | |
516 | ||
517 | static void b44_check_phy(struct b44 *bp) | |
518 | { | |
519 | u32 bmsr, aux; | |
520 | ||
753f4920 MB |
521 | if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) { |
522 | bp->flags |= B44_FLAG_100_BASE_T; | |
523 | bp->flags |= B44_FLAG_FULL_DUPLEX; | |
524 | if (!netif_carrier_ok(bp->dev)) { | |
525 | u32 val = br32(bp, B44_TX_CTRL); | |
526 | val |= TX_CTRL_DUPLEX; | |
527 | bw32(bp, B44_TX_CTRL, val); | |
528 | netif_carrier_on(bp->dev); | |
529 | b44_link_report(bp); | |
530 | } | |
531 | return; | |
532 | } | |
533 | ||
1da177e4 LT |
534 | if (!b44_readphy(bp, MII_BMSR, &bmsr) && |
535 | !b44_readphy(bp, B44_MII_AUXCTRL, &aux) && | |
536 | (bmsr != 0xffff)) { | |
537 | if (aux & MII_AUXCTRL_SPEED) | |
538 | bp->flags |= B44_FLAG_100_BASE_T; | |
539 | else | |
540 | bp->flags &= ~B44_FLAG_100_BASE_T; | |
541 | if (aux & MII_AUXCTRL_DUPLEX) | |
542 | bp->flags |= B44_FLAG_FULL_DUPLEX; | |
543 | else | |
544 | bp->flags &= ~B44_FLAG_FULL_DUPLEX; | |
545 | ||
546 | if (!netif_carrier_ok(bp->dev) && | |
547 | (bmsr & BMSR_LSTATUS)) { | |
548 | u32 val = br32(bp, B44_TX_CTRL); | |
549 | u32 local_adv, remote_adv; | |
550 | ||
551 | if (bp->flags & B44_FLAG_FULL_DUPLEX) | |
552 | val |= TX_CTRL_DUPLEX; | |
553 | else | |
554 | val &= ~TX_CTRL_DUPLEX; | |
555 | bw32(bp, B44_TX_CTRL, val); | |
556 | ||
557 | if (!(bp->flags & B44_FLAG_FORCE_LINK) && | |
558 | !b44_readphy(bp, MII_ADVERTISE, &local_adv) && | |
559 | !b44_readphy(bp, MII_LPA, &remote_adv)) | |
560 | b44_set_flow_ctrl(bp, local_adv, remote_adv); | |
561 | ||
562 | /* Link now up */ | |
563 | netif_carrier_on(bp->dev); | |
564 | b44_link_report(bp); | |
565 | } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) { | |
566 | /* Link now down */ | |
567 | netif_carrier_off(bp->dev); | |
568 | b44_link_report(bp); | |
569 | } | |
570 | ||
571 | if (bmsr & BMSR_RFAULT) | |
2fc96fff | 572 | netdev_warn(bp->dev, "Remote fault detected in PHY\n"); |
1da177e4 | 573 | if (bmsr & BMSR_JCD) |
2fc96fff | 574 | netdev_warn(bp->dev, "Jabber detected in PHY\n"); |
1da177e4 LT |
575 | } |
576 | } | |
577 | ||
578 | static void b44_timer(unsigned long __opaque) | |
579 | { | |
580 | struct b44 *bp = (struct b44 *) __opaque; | |
581 | ||
582 | spin_lock_irq(&bp->lock); | |
583 | ||
584 | b44_check_phy(bp); | |
585 | ||
586 | b44_stats_update(bp); | |
587 | ||
588 | spin_unlock_irq(&bp->lock); | |
589 | ||
a72a8179 | 590 | mod_timer(&bp->timer, round_jiffies(jiffies + HZ)); |
1da177e4 LT |
591 | } |
592 | ||
593 | static void b44_tx(struct b44 *bp) | |
594 | { | |
595 | u32 cur, cons; | |
596 | ||
597 | cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK; | |
598 | cur /= sizeof(struct dma_desc); | |
599 | ||
600 | /* XXX needs updating when NETIF_F_SG is supported */ | |
601 | for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) { | |
602 | struct ring_info *rp = &bp->tx_buffers[cons]; | |
603 | struct sk_buff *skb = rp->skb; | |
604 | ||
5d9428de | 605 | BUG_ON(skb == NULL); |
1da177e4 | 606 | |
39a6f4bc FT |
607 | dma_unmap_single(bp->sdev->dma_dev, |
608 | rp->mapping, | |
609 | skb->len, | |
610 | DMA_TO_DEVICE); | |
1da177e4 LT |
611 | rp->skb = NULL; |
612 | dev_kfree_skb_irq(skb); | |
613 | } | |
614 | ||
615 | bp->tx_cons = cons; | |
616 | if (netif_queue_stopped(bp->dev) && | |
617 | TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH) | |
618 | netif_wake_queue(bp->dev); | |
619 | ||
620 | bw32(bp, B44_GPTIMER, 0); | |
621 | } | |
622 | ||
623 | /* Works like this. This chip writes a 'struct rx_header" 30 bytes | |
624 | * before the DMA address you give it. So we allocate 30 more bytes | |
625 | * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then | |
626 | * point the chip at 30 bytes past where the rx_header will go. | |
627 | */ | |
628 | static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked) | |
629 | { | |
630 | struct dma_desc *dp; | |
631 | struct ring_info *src_map, *map; | |
632 | struct rx_header *rh; | |
633 | struct sk_buff *skb; | |
634 | dma_addr_t mapping; | |
635 | int dest_idx; | |
636 | u32 ctrl; | |
637 | ||
638 | src_map = NULL; | |
639 | if (src_idx >= 0) | |
640 | src_map = &bp->rx_buffers[src_idx]; | |
641 | dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1); | |
642 | map = &bp->rx_buffers[dest_idx]; | |
bf0dcbd9 | 643 | skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ); |
1da177e4 LT |
644 | if (skb == NULL) |
645 | return -ENOMEM; | |
646 | ||
39a6f4bc FT |
647 | mapping = dma_map_single(bp->sdev->dma_dev, skb->data, |
648 | RX_PKT_BUF_SZ, | |
649 | DMA_FROM_DEVICE); | |
1da177e4 LT |
650 | |
651 | /* Hardware bug work-around, the chip is unable to do PCI DMA | |
652 | to/from anything above 1GB :-( */ | |
39a6f4bc | 653 | if (dma_mapping_error(bp->sdev->dma_dev, mapping) || |
28b76796 | 654 | mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) { |
1da177e4 | 655 | /* Sigh... */ |
39a6f4bc FT |
656 | if (!dma_mapping_error(bp->sdev->dma_dev, mapping)) |
657 | dma_unmap_single(bp->sdev->dma_dev, mapping, | |
f225763a | 658 | RX_PKT_BUF_SZ, DMA_FROM_DEVICE); |
1da177e4 | 659 | dev_kfree_skb_any(skb); |
bf0dcbd9 | 660 | skb = __netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ, GFP_ATOMIC|GFP_DMA); |
1da177e4 LT |
661 | if (skb == NULL) |
662 | return -ENOMEM; | |
39a6f4bc FT |
663 | mapping = dma_map_single(bp->sdev->dma_dev, skb->data, |
664 | RX_PKT_BUF_SZ, | |
665 | DMA_FROM_DEVICE); | |
666 | if (dma_mapping_error(bp->sdev->dma_dev, mapping) || | |
667 | mapping + RX_PKT_BUF_SZ > DMA_BIT_MASK(30)) { | |
668 | if (!dma_mapping_error(bp->sdev->dma_dev, mapping)) | |
669 | dma_unmap_single(bp->sdev->dma_dev, mapping, RX_PKT_BUF_SZ,DMA_FROM_DEVICE); | |
1da177e4 LT |
670 | dev_kfree_skb_any(skb); |
671 | return -ENOMEM; | |
672 | } | |
a58c891a | 673 | bp->force_copybreak = 1; |
1da177e4 LT |
674 | } |
675 | ||
72f4861e | 676 | rh = (struct rx_header *) skb->data; |
1da177e4 | 677 | |
1da177e4 LT |
678 | rh->len = 0; |
679 | rh->flags = 0; | |
680 | ||
681 | map->skb = skb; | |
753f4920 | 682 | map->mapping = mapping; |
1da177e4 LT |
683 | |
684 | if (src_map != NULL) | |
685 | src_map->skb = NULL; | |
686 | ||
4ca85795 | 687 | ctrl = (DESC_CTRL_LEN & RX_PKT_BUF_SZ); |
1da177e4 LT |
688 | if (dest_idx == (B44_RX_RING_SIZE - 1)) |
689 | ctrl |= DESC_CTRL_EOT; | |
690 | ||
691 | dp = &bp->rx_ring[dest_idx]; | |
692 | dp->ctrl = cpu_to_le32(ctrl); | |
4ca85795 | 693 | dp->addr = cpu_to_le32((u32) mapping + bp->dma_offset); |
1da177e4 | 694 | |
9f38c636 | 695 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
753f4920 | 696 | b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma, |
5d4d9e8a | 697 | dest_idx * sizeof(*dp), |
753f4920 | 698 | DMA_BIDIRECTIONAL); |
9f38c636 | 699 | |
1da177e4 LT |
700 | return RX_PKT_BUF_SZ; |
701 | } | |
702 | ||
703 | static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked) | |
704 | { | |
705 | struct dma_desc *src_desc, *dest_desc; | |
706 | struct ring_info *src_map, *dest_map; | |
707 | struct rx_header *rh; | |
708 | int dest_idx; | |
a7bed27d | 709 | __le32 ctrl; |
1da177e4 LT |
710 | |
711 | dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1); | |
712 | dest_desc = &bp->rx_ring[dest_idx]; | |
713 | dest_map = &bp->rx_buffers[dest_idx]; | |
714 | src_desc = &bp->rx_ring[src_idx]; | |
715 | src_map = &bp->rx_buffers[src_idx]; | |
716 | ||
717 | dest_map->skb = src_map->skb; | |
718 | rh = (struct rx_header *) src_map->skb->data; | |
719 | rh->len = 0; | |
720 | rh->flags = 0; | |
753f4920 | 721 | dest_map->mapping = src_map->mapping; |
1da177e4 | 722 | |
9f38c636 | 723 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
753f4920 | 724 | b44_sync_dma_desc_for_cpu(bp->sdev, bp->rx_ring_dma, |
5d4d9e8a | 725 | src_idx * sizeof(*src_desc), |
753f4920 | 726 | DMA_BIDIRECTIONAL); |
9f38c636 | 727 | |
1da177e4 LT |
728 | ctrl = src_desc->ctrl; |
729 | if (dest_idx == (B44_RX_RING_SIZE - 1)) | |
730 | ctrl |= cpu_to_le32(DESC_CTRL_EOT); | |
731 | else | |
732 | ctrl &= cpu_to_le32(~DESC_CTRL_EOT); | |
733 | ||
734 | dest_desc->ctrl = ctrl; | |
735 | dest_desc->addr = src_desc->addr; | |
9f38c636 | 736 | |
1da177e4 LT |
737 | src_map->skb = NULL; |
738 | ||
9f38c636 | 739 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
753f4920 | 740 | b44_sync_dma_desc_for_device(bp->sdev, bp->rx_ring_dma, |
5d4d9e8a | 741 | dest_idx * sizeof(*dest_desc), |
753f4920 | 742 | DMA_BIDIRECTIONAL); |
9f38c636 | 743 | |
39a6f4bc FT |
744 | dma_sync_single_for_device(bp->sdev->dma_dev, dest_map->mapping, |
745 | RX_PKT_BUF_SZ, | |
746 | DMA_FROM_DEVICE); | |
1da177e4 LT |
747 | } |
748 | ||
749 | static int b44_rx(struct b44 *bp, int budget) | |
750 | { | |
751 | int received; | |
752 | u32 cons, prod; | |
753 | ||
754 | received = 0; | |
755 | prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK; | |
756 | prod /= sizeof(struct dma_desc); | |
757 | cons = bp->rx_cons; | |
758 | ||
759 | while (cons != prod && budget > 0) { | |
760 | struct ring_info *rp = &bp->rx_buffers[cons]; | |
761 | struct sk_buff *skb = rp->skb; | |
753f4920 | 762 | dma_addr_t map = rp->mapping; |
1da177e4 LT |
763 | struct rx_header *rh; |
764 | u16 len; | |
765 | ||
39a6f4bc FT |
766 | dma_sync_single_for_cpu(bp->sdev->dma_dev, map, |
767 | RX_PKT_BUF_SZ, | |
768 | DMA_FROM_DEVICE); | |
1da177e4 | 769 | rh = (struct rx_header *) skb->data; |
a7bed27d | 770 | len = le16_to_cpu(rh->len); |
72f4861e | 771 | if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) || |
1da177e4 LT |
772 | (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) { |
773 | drop_it: | |
774 | b44_recycle_rx(bp, cons, bp->rx_prod); | |
775 | drop_it_no_recycle: | |
553e2335 | 776 | bp->dev->stats.rx_dropped++; |
1da177e4 LT |
777 | goto next_pkt; |
778 | } | |
779 | ||
780 | if (len == 0) { | |
781 | int i = 0; | |
782 | ||
783 | do { | |
784 | udelay(2); | |
785 | barrier(); | |
a7bed27d | 786 | len = le16_to_cpu(rh->len); |
1da177e4 LT |
787 | } while (len == 0 && i++ < 5); |
788 | if (len == 0) | |
789 | goto drop_it; | |
790 | } | |
791 | ||
792 | /* Omit CRC. */ | |
793 | len -= 4; | |
794 | ||
a58c891a | 795 | if (!bp->force_copybreak && len > RX_COPY_THRESHOLD) { |
1da177e4 LT |
796 | int skb_size; |
797 | skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod); | |
798 | if (skb_size < 0) | |
799 | goto drop_it; | |
39a6f4bc FT |
800 | dma_unmap_single(bp->sdev->dma_dev, map, |
801 | skb_size, DMA_FROM_DEVICE); | |
1da177e4 | 802 | /* Leave out rx_header */ |
4ca85795 FF |
803 | skb_put(skb, len + RX_PKT_OFFSET); |
804 | skb_pull(skb, RX_PKT_OFFSET); | |
1da177e4 LT |
805 | } else { |
806 | struct sk_buff *copy_skb; | |
807 | ||
808 | b44_recycle_rx(bp, cons, bp->rx_prod); | |
53639207 | 809 | copy_skb = netdev_alloc_skb(bp->dev, len + 2); |
1da177e4 LT |
810 | if (copy_skb == NULL) |
811 | goto drop_it_no_recycle; | |
812 | ||
1da177e4 LT |
813 | skb_reserve(copy_skb, 2); |
814 | skb_put(copy_skb, len); | |
815 | /* DMA sync done above, copy just the actual packet */ | |
72f4861e | 816 | skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET, |
d626f62b | 817 | copy_skb->data, len); |
1da177e4 LT |
818 | skb = copy_skb; |
819 | } | |
bc8acf2c | 820 | skb_checksum_none_assert(skb); |
1da177e4 LT |
821 | skb->protocol = eth_type_trans(skb, bp->dev); |
822 | netif_receive_skb(skb); | |
1da177e4 LT |
823 | received++; |
824 | budget--; | |
825 | next_pkt: | |
826 | bp->rx_prod = (bp->rx_prod + 1) & | |
827 | (B44_RX_RING_SIZE - 1); | |
828 | cons = (cons + 1) & (B44_RX_RING_SIZE - 1); | |
829 | } | |
830 | ||
831 | bp->rx_cons = cons; | |
832 | bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc)); | |
833 | ||
834 | return received; | |
835 | } | |
836 | ||
bea3348e | 837 | static int b44_poll(struct napi_struct *napi, int budget) |
1da177e4 | 838 | { |
bea3348e | 839 | struct b44 *bp = container_of(napi, struct b44, napi); |
bea3348e | 840 | int work_done; |
e99b1f04 | 841 | unsigned long flags; |
1da177e4 | 842 | |
e99b1f04 | 843 | spin_lock_irqsave(&bp->lock, flags); |
1da177e4 LT |
844 | |
845 | if (bp->istat & (ISTAT_TX | ISTAT_TO)) { | |
846 | /* spin_lock(&bp->tx_lock); */ | |
847 | b44_tx(bp); | |
848 | /* spin_unlock(&bp->tx_lock); */ | |
849 | } | |
32737e93 ML |
850 | if (bp->istat & ISTAT_RFO) { /* fast recovery, in ~20msec */ |
851 | bp->istat &= ~ISTAT_RFO; | |
852 | b44_disable_ints(bp); | |
853 | ssb_device_enable(bp->sdev, 0); /* resets ISTAT_RFO */ | |
854 | b44_init_rings(bp); | |
855 | b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY); | |
856 | netif_wake_queue(bp->dev); | |
857 | } | |
858 | ||
e99b1f04 | 859 | spin_unlock_irqrestore(&bp->lock, flags); |
1da177e4 | 860 | |
bea3348e SH |
861 | work_done = 0; |
862 | if (bp->istat & ISTAT_RX) | |
863 | work_done += b44_rx(bp, budget); | |
1da177e4 LT |
864 | |
865 | if (bp->istat & ISTAT_ERRORS) { | |
d15e9c4d | 866 | spin_lock_irqsave(&bp->lock, flags); |
1da177e4 LT |
867 | b44_halt(bp); |
868 | b44_init_rings(bp); | |
5fc7d61a | 869 | b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY); |
1da177e4 | 870 | netif_wake_queue(bp->dev); |
d15e9c4d | 871 | spin_unlock_irqrestore(&bp->lock, flags); |
bea3348e | 872 | work_done = 0; |
1da177e4 LT |
873 | } |
874 | ||
bea3348e | 875 | if (work_done < budget) { |
288379f0 | 876 | napi_complete(napi); |
1da177e4 LT |
877 | b44_enable_ints(bp); |
878 | } | |
879 | ||
bea3348e | 880 | return work_done; |
1da177e4 LT |
881 | } |
882 | ||
7d12e780 | 883 | static irqreturn_t b44_interrupt(int irq, void *dev_id) |
1da177e4 LT |
884 | { |
885 | struct net_device *dev = dev_id; | |
886 | struct b44 *bp = netdev_priv(dev); | |
1da177e4 LT |
887 | u32 istat, imask; |
888 | int handled = 0; | |
889 | ||
65b984f2 | 890 | spin_lock(&bp->lock); |
1da177e4 LT |
891 | |
892 | istat = br32(bp, B44_ISTAT); | |
893 | imask = br32(bp, B44_IMASK); | |
894 | ||
e78181fe JB |
895 | /* The interrupt mask register controls which interrupt bits |
896 | * will actually raise an interrupt to the CPU when set by hw/firmware, | |
897 | * but doesn't mask off the bits. | |
1da177e4 LT |
898 | */ |
899 | istat &= imask; | |
900 | if (istat) { | |
901 | handled = 1; | |
ba5eec9c FR |
902 | |
903 | if (unlikely(!netif_running(dev))) { | |
2fc96fff | 904 | netdev_info(dev, "late interrupt\n"); |
ba5eec9c FR |
905 | goto irq_ack; |
906 | } | |
907 | ||
288379f0 | 908 | if (napi_schedule_prep(&bp->napi)) { |
1da177e4 LT |
909 | /* NOTE: These writes are posted by the readback of |
910 | * the ISTAT register below. | |
911 | */ | |
912 | bp->istat = istat; | |
913 | __b44_disable_ints(bp); | |
288379f0 | 914 | __napi_schedule(&bp->napi); |
1da177e4 LT |
915 | } |
916 | ||
ba5eec9c | 917 | irq_ack: |
1da177e4 LT |
918 | bw32(bp, B44_ISTAT, istat); |
919 | br32(bp, B44_ISTAT); | |
920 | } | |
65b984f2 | 921 | spin_unlock(&bp->lock); |
1da177e4 LT |
922 | return IRQ_RETVAL(handled); |
923 | } | |
924 | ||
925 | static void b44_tx_timeout(struct net_device *dev) | |
926 | { | |
927 | struct b44 *bp = netdev_priv(dev); | |
928 | ||
2fc96fff | 929 | netdev_err(dev, "transmit timed out, resetting\n"); |
1da177e4 LT |
930 | |
931 | spin_lock_irq(&bp->lock); | |
932 | ||
933 | b44_halt(bp); | |
934 | b44_init_rings(bp); | |
5fc7d61a | 935 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
936 | |
937 | spin_unlock_irq(&bp->lock); | |
938 | ||
939 | b44_enable_ints(bp); | |
940 | ||
941 | netif_wake_queue(dev); | |
942 | } | |
943 | ||
61357325 | 944 | static netdev_tx_t b44_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 LT |
945 | { |
946 | struct b44 *bp = netdev_priv(dev); | |
c7193693 | 947 | int rc = NETDEV_TX_OK; |
1da177e4 LT |
948 | dma_addr_t mapping; |
949 | u32 len, entry, ctrl; | |
22580f89 | 950 | unsigned long flags; |
1da177e4 LT |
951 | |
952 | len = skb->len; | |
22580f89 | 953 | spin_lock_irqsave(&bp->lock, flags); |
1da177e4 LT |
954 | |
955 | /* This is a hard error, log it. */ | |
956 | if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) { | |
957 | netif_stop_queue(dev); | |
2fc96fff | 958 | netdev_err(dev, "BUG! Tx Ring full when queue awake!\n"); |
c7193693 | 959 | goto err_out; |
1da177e4 LT |
960 | } |
961 | ||
39a6f4bc FT |
962 | mapping = dma_map_single(bp->sdev->dma_dev, skb->data, len, DMA_TO_DEVICE); |
963 | if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) { | |
f65a7177 SH |
964 | struct sk_buff *bounce_skb; |
965 | ||
1da177e4 | 966 | /* Chip can't handle DMA to/from >1GB, use bounce buffer */ |
39a6f4bc FT |
967 | if (!dma_mapping_error(bp->sdev->dma_dev, mapping)) |
968 | dma_unmap_single(bp->sdev->dma_dev, mapping, len, | |
f225763a | 969 | DMA_TO_DEVICE); |
1da177e4 | 970 | |
9034f77b | 971 | bounce_skb = __netdev_alloc_skb(dev, len, GFP_ATOMIC | GFP_DMA); |
1da177e4 | 972 | if (!bounce_skb) |
c7193693 | 973 | goto err_out; |
1da177e4 | 974 | |
39a6f4bc FT |
975 | mapping = dma_map_single(bp->sdev->dma_dev, bounce_skb->data, |
976 | len, DMA_TO_DEVICE); | |
977 | if (dma_mapping_error(bp->sdev->dma_dev, mapping) || mapping + len > DMA_BIT_MASK(30)) { | |
978 | if (!dma_mapping_error(bp->sdev->dma_dev, mapping)) | |
979 | dma_unmap_single(bp->sdev->dma_dev, mapping, | |
f225763a | 980 | len, DMA_TO_DEVICE); |
1da177e4 | 981 | dev_kfree_skb_any(bounce_skb); |
c7193693 | 982 | goto err_out; |
1da177e4 LT |
983 | } |
984 | ||
f65a7177 | 985 | skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len); |
1da177e4 LT |
986 | dev_kfree_skb_any(skb); |
987 | skb = bounce_skb; | |
988 | } | |
989 | ||
990 | entry = bp->tx_prod; | |
991 | bp->tx_buffers[entry].skb = skb; | |
753f4920 | 992 | bp->tx_buffers[entry].mapping = mapping; |
1da177e4 LT |
993 | |
994 | ctrl = (len & DESC_CTRL_LEN); | |
995 | ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF; | |
996 | if (entry == (B44_TX_RING_SIZE - 1)) | |
997 | ctrl |= DESC_CTRL_EOT; | |
998 | ||
999 | bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl); | |
1000 | bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset); | |
1001 | ||
9f38c636 | 1002 | if (bp->flags & B44_FLAG_TX_RING_HACK) |
753f4920 MB |
1003 | b44_sync_dma_desc_for_device(bp->sdev, bp->tx_ring_dma, |
1004 | entry * sizeof(bp->tx_ring[0]), | |
1005 | DMA_TO_DEVICE); | |
9f38c636 | 1006 | |
1da177e4 LT |
1007 | entry = NEXT_TX(entry); |
1008 | ||
1009 | bp->tx_prod = entry; | |
1010 | ||
1011 | wmb(); | |
1012 | ||
1013 | bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc)); | |
1014 | if (bp->flags & B44_FLAG_BUGGY_TXPTR) | |
1015 | bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc)); | |
1016 | if (bp->flags & B44_FLAG_REORDER_BUG) | |
1017 | br32(bp, B44_DMATX_PTR); | |
1018 | ||
1019 | if (TX_BUFFS_AVAIL(bp) < 1) | |
1020 | netif_stop_queue(dev); | |
1021 | ||
c7193693 | 1022 | out_unlock: |
22580f89 | 1023 | spin_unlock_irqrestore(&bp->lock, flags); |
1da177e4 | 1024 | |
c7193693 | 1025 | return rc; |
1da177e4 | 1026 | |
c7193693 FR |
1027 | err_out: |
1028 | rc = NETDEV_TX_BUSY; | |
1029 | goto out_unlock; | |
1da177e4 LT |
1030 | } |
1031 | ||
1032 | static int b44_change_mtu(struct net_device *dev, int new_mtu) | |
1033 | { | |
1034 | struct b44 *bp = netdev_priv(dev); | |
1035 | ||
1036 | if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU) | |
1037 | return -EINVAL; | |
1038 | ||
1039 | if (!netif_running(dev)) { | |
1040 | /* We'll just catch it later when the | |
1041 | * device is up'd. | |
1042 | */ | |
1043 | dev->mtu = new_mtu; | |
1044 | return 0; | |
1045 | } | |
1046 | ||
1047 | spin_lock_irq(&bp->lock); | |
1048 | b44_halt(bp); | |
1049 | dev->mtu = new_mtu; | |
1050 | b44_init_rings(bp); | |
5fc7d61a | 1051 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
1052 | spin_unlock_irq(&bp->lock); |
1053 | ||
1054 | b44_enable_ints(bp); | |
10badc21 | 1055 | |
1da177e4 LT |
1056 | return 0; |
1057 | } | |
1058 | ||
1059 | /* Free up pending packets in all rx/tx rings. | |
1060 | * | |
1061 | * The chip has been shut down and the driver detached from | |
1062 | * the networking, so no interrupts or new tx packets will | |
1063 | * end up in the driver. bp->lock is not held and we are not | |
1064 | * in an interrupt context and thus may sleep. | |
1065 | */ | |
1066 | static void b44_free_rings(struct b44 *bp) | |
1067 | { | |
1068 | struct ring_info *rp; | |
1069 | int i; | |
1070 | ||
1071 | for (i = 0; i < B44_RX_RING_SIZE; i++) { | |
1072 | rp = &bp->rx_buffers[i]; | |
1073 | ||
1074 | if (rp->skb == NULL) | |
1075 | continue; | |
39a6f4bc FT |
1076 | dma_unmap_single(bp->sdev->dma_dev, rp->mapping, RX_PKT_BUF_SZ, |
1077 | DMA_FROM_DEVICE); | |
1da177e4 LT |
1078 | dev_kfree_skb_any(rp->skb); |
1079 | rp->skb = NULL; | |
1080 | } | |
1081 | ||
1082 | /* XXX needs changes once NETIF_F_SG is set... */ | |
1083 | for (i = 0; i < B44_TX_RING_SIZE; i++) { | |
1084 | rp = &bp->tx_buffers[i]; | |
1085 | ||
1086 | if (rp->skb == NULL) | |
1087 | continue; | |
39a6f4bc FT |
1088 | dma_unmap_single(bp->sdev->dma_dev, rp->mapping, rp->skb->len, |
1089 | DMA_TO_DEVICE); | |
1da177e4 LT |
1090 | dev_kfree_skb_any(rp->skb); |
1091 | rp->skb = NULL; | |
1092 | } | |
1093 | } | |
1094 | ||
1095 | /* Initialize tx/rx rings for packet processing. | |
1096 | * | |
1097 | * The chip has been shut down and the driver detached from | |
1098 | * the networking, so no interrupts or new tx packets will | |
874a6214 | 1099 | * end up in the driver. |
1da177e4 LT |
1100 | */ |
1101 | static void b44_init_rings(struct b44 *bp) | |
1102 | { | |
1103 | int i; | |
1104 | ||
1105 | b44_free_rings(bp); | |
1106 | ||
1107 | memset(bp->rx_ring, 0, B44_RX_RING_BYTES); | |
1108 | memset(bp->tx_ring, 0, B44_TX_RING_BYTES); | |
1109 | ||
9f38c636 | 1110 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
39a6f4bc FT |
1111 | dma_sync_single_for_device(bp->sdev->dma_dev, bp->rx_ring_dma, |
1112 | DMA_TABLE_BYTES, DMA_BIDIRECTIONAL); | |
9f38c636 JL |
1113 | |
1114 | if (bp->flags & B44_FLAG_TX_RING_HACK) | |
39a6f4bc FT |
1115 | dma_sync_single_for_device(bp->sdev->dma_dev, bp->tx_ring_dma, |
1116 | DMA_TABLE_BYTES, DMA_TO_DEVICE); | |
9f38c636 | 1117 | |
1da177e4 LT |
1118 | for (i = 0; i < bp->rx_pending; i++) { |
1119 | if (b44_alloc_rx_skb(bp, -1, i) < 0) | |
1120 | break; | |
1121 | } | |
1122 | } | |
1123 | ||
1124 | /* | |
1125 | * Must not be invoked with interrupt sources disabled and | |
1126 | * the hardware shutdown down. | |
1127 | */ | |
1128 | static void b44_free_consistent(struct b44 *bp) | |
1129 | { | |
b4558ea9 JJ |
1130 | kfree(bp->rx_buffers); |
1131 | bp->rx_buffers = NULL; | |
1132 | kfree(bp->tx_buffers); | |
1133 | bp->tx_buffers = NULL; | |
1da177e4 | 1134 | if (bp->rx_ring) { |
9f38c636 | 1135 | if (bp->flags & B44_FLAG_RX_RING_HACK) { |
39a6f4bc FT |
1136 | dma_unmap_single(bp->sdev->dma_dev, bp->rx_ring_dma, |
1137 | DMA_TABLE_BYTES, DMA_BIDIRECTIONAL); | |
9f38c636 JL |
1138 | kfree(bp->rx_ring); |
1139 | } else | |
39a6f4bc FT |
1140 | dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES, |
1141 | bp->rx_ring, bp->rx_ring_dma); | |
1da177e4 | 1142 | bp->rx_ring = NULL; |
9f38c636 | 1143 | bp->flags &= ~B44_FLAG_RX_RING_HACK; |
1da177e4 LT |
1144 | } |
1145 | if (bp->tx_ring) { | |
9f38c636 | 1146 | if (bp->flags & B44_FLAG_TX_RING_HACK) { |
39a6f4bc FT |
1147 | dma_unmap_single(bp->sdev->dma_dev, bp->tx_ring_dma, |
1148 | DMA_TABLE_BYTES, DMA_TO_DEVICE); | |
9f38c636 JL |
1149 | kfree(bp->tx_ring); |
1150 | } else | |
39a6f4bc FT |
1151 | dma_free_coherent(bp->sdev->dma_dev, DMA_TABLE_BYTES, |
1152 | bp->tx_ring, bp->tx_ring_dma); | |
1da177e4 | 1153 | bp->tx_ring = NULL; |
9f38c636 | 1154 | bp->flags &= ~B44_FLAG_TX_RING_HACK; |
1da177e4 LT |
1155 | } |
1156 | } | |
1157 | ||
1158 | /* | |
1159 | * Must not be invoked with interrupt sources disabled and | |
1160 | * the hardware shutdown down. Can sleep. | |
1161 | */ | |
753f4920 | 1162 | static int b44_alloc_consistent(struct b44 *bp, gfp_t gfp) |
1da177e4 LT |
1163 | { |
1164 | int size; | |
1165 | ||
1166 | size = B44_RX_RING_SIZE * sizeof(struct ring_info); | |
753f4920 | 1167 | bp->rx_buffers = kzalloc(size, gfp); |
1da177e4 LT |
1168 | if (!bp->rx_buffers) |
1169 | goto out_err; | |
1da177e4 LT |
1170 | |
1171 | size = B44_TX_RING_SIZE * sizeof(struct ring_info); | |
753f4920 | 1172 | bp->tx_buffers = kzalloc(size, gfp); |
1da177e4 LT |
1173 | if (!bp->tx_buffers) |
1174 | goto out_err; | |
1da177e4 LT |
1175 | |
1176 | size = DMA_TABLE_BYTES; | |
39a6f4bc FT |
1177 | bp->rx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size, |
1178 | &bp->rx_ring_dma, gfp); | |
9f38c636 JL |
1179 | if (!bp->rx_ring) { |
1180 | /* Allocation may have failed due to pci_alloc_consistent | |
1181 | insisting on use of GFP_DMA, which is more restrictive | |
1182 | than necessary... */ | |
1183 | struct dma_desc *rx_ring; | |
1184 | dma_addr_t rx_ring_dma; | |
1185 | ||
753f4920 | 1186 | rx_ring = kzalloc(size, gfp); |
874a6214 | 1187 | if (!rx_ring) |
9f38c636 JL |
1188 | goto out_err; |
1189 | ||
39a6f4bc FT |
1190 | rx_ring_dma = dma_map_single(bp->sdev->dma_dev, rx_ring, |
1191 | DMA_TABLE_BYTES, | |
1192 | DMA_BIDIRECTIONAL); | |
9f38c636 | 1193 | |
39a6f4bc | 1194 | if (dma_mapping_error(bp->sdev->dma_dev, rx_ring_dma) || |
28b76796 | 1195 | rx_ring_dma + size > DMA_BIT_MASK(30)) { |
9f38c636 JL |
1196 | kfree(rx_ring); |
1197 | goto out_err; | |
1198 | } | |
1199 | ||
1200 | bp->rx_ring = rx_ring; | |
1201 | bp->rx_ring_dma = rx_ring_dma; | |
1202 | bp->flags |= B44_FLAG_RX_RING_HACK; | |
1203 | } | |
1da177e4 | 1204 | |
39a6f4bc FT |
1205 | bp->tx_ring = dma_alloc_coherent(bp->sdev->dma_dev, size, |
1206 | &bp->tx_ring_dma, gfp); | |
9f38c636 | 1207 | if (!bp->tx_ring) { |
f225763a | 1208 | /* Allocation may have failed due to ssb_dma_alloc_consistent |
9f38c636 JL |
1209 | insisting on use of GFP_DMA, which is more restrictive |
1210 | than necessary... */ | |
1211 | struct dma_desc *tx_ring; | |
1212 | dma_addr_t tx_ring_dma; | |
1213 | ||
753f4920 | 1214 | tx_ring = kzalloc(size, gfp); |
874a6214 | 1215 | if (!tx_ring) |
9f38c636 JL |
1216 | goto out_err; |
1217 | ||
39a6f4bc FT |
1218 | tx_ring_dma = dma_map_single(bp->sdev->dma_dev, tx_ring, |
1219 | DMA_TABLE_BYTES, | |
1220 | DMA_TO_DEVICE); | |
9f38c636 | 1221 | |
39a6f4bc | 1222 | if (dma_mapping_error(bp->sdev->dma_dev, tx_ring_dma) || |
28b76796 | 1223 | tx_ring_dma + size > DMA_BIT_MASK(30)) { |
9f38c636 JL |
1224 | kfree(tx_ring); |
1225 | goto out_err; | |
1226 | } | |
1227 | ||
1228 | bp->tx_ring = tx_ring; | |
1229 | bp->tx_ring_dma = tx_ring_dma; | |
1230 | bp->flags |= B44_FLAG_TX_RING_HACK; | |
1231 | } | |
1da177e4 LT |
1232 | |
1233 | return 0; | |
1234 | ||
1235 | out_err: | |
1236 | b44_free_consistent(bp); | |
1237 | return -ENOMEM; | |
1238 | } | |
1239 | ||
1240 | /* bp->lock is held. */ | |
1241 | static void b44_clear_stats(struct b44 *bp) | |
1242 | { | |
1243 | unsigned long reg; | |
1244 | ||
1245 | bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); | |
1246 | for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) | |
1247 | br32(bp, reg); | |
1248 | for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) | |
1249 | br32(bp, reg); | |
1250 | } | |
1251 | ||
1252 | /* bp->lock is held. */ | |
fedb0eef | 1253 | static void b44_chip_reset(struct b44 *bp, int reset_kind) |
1da177e4 | 1254 | { |
753f4920 | 1255 | struct ssb_device *sdev = bp->sdev; |
f8af11af | 1256 | bool was_enabled; |
753f4920 | 1257 | |
f8af11af MB |
1258 | was_enabled = ssb_device_is_enabled(bp->sdev); |
1259 | ||
1260 | ssb_device_enable(bp->sdev, 0); | |
1261 | ssb_pcicore_dev_irqvecs_enable(&sdev->bus->pcicore, sdev); | |
1262 | ||
1263 | if (was_enabled) { | |
1da177e4 LT |
1264 | bw32(bp, B44_RCV_LAZY, 0); |
1265 | bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE); | |
40ee8c76 | 1266 | b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1); |
1da177e4 LT |
1267 | bw32(bp, B44_DMATX_CTRL, 0); |
1268 | bp->tx_prod = bp->tx_cons = 0; | |
1269 | if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) { | |
1270 | b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE, | |
1271 | 100, 0); | |
1272 | } | |
1273 | bw32(bp, B44_DMARX_CTRL, 0); | |
1274 | bp->rx_prod = bp->rx_cons = 0; | |
f8af11af | 1275 | } |
1da177e4 LT |
1276 | |
1277 | b44_clear_stats(bp); | |
1278 | ||
fedb0eef MB |
1279 | /* |
1280 | * Don't enable PHY if we are doing a partial reset | |
1281 | * we are probably going to power down | |
1282 | */ | |
1283 | if (reset_kind == B44_CHIP_RESET_PARTIAL) | |
1284 | return; | |
1285 | ||
753f4920 MB |
1286 | switch (sdev->bus->bustype) { |
1287 | case SSB_BUSTYPE_SSB: | |
1288 | bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE | | |
39506a55 JL |
1289 | (DIV_ROUND_CLOSEST(ssb_clockspeed(sdev->bus), |
1290 | B44_MDC_RATIO) | |
753f4920 MB |
1291 | & MDIO_CTRL_MAXF_MASK))); |
1292 | break; | |
1293 | case SSB_BUSTYPE_PCI: | |
753f4920 MB |
1294 | bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE | |
1295 | (0x0d & MDIO_CTRL_MAXF_MASK))); | |
1296 | break; | |
98a1e2a9 MB |
1297 | case SSB_BUSTYPE_PCMCIA: |
1298 | case SSB_BUSTYPE_SDIO: | |
1299 | WARN_ON(1); /* A device with this bus does not exist. */ | |
1300 | break; | |
753f4920 MB |
1301 | } |
1302 | ||
1da177e4 LT |
1303 | br32(bp, B44_MDIO_CTRL); |
1304 | ||
1305 | if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) { | |
1306 | bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL); | |
1307 | br32(bp, B44_ENET_CTRL); | |
1308 | bp->flags &= ~B44_FLAG_INTERNAL_PHY; | |
1309 | } else { | |
1310 | u32 val = br32(bp, B44_DEVCTRL); | |
1311 | ||
1312 | if (val & DEVCTRL_EPR) { | |
1313 | bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR)); | |
1314 | br32(bp, B44_DEVCTRL); | |
1315 | udelay(100); | |
1316 | } | |
1317 | bp->flags |= B44_FLAG_INTERNAL_PHY; | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | /* bp->lock is held. */ | |
1322 | static void b44_halt(struct b44 *bp) | |
1323 | { | |
1324 | b44_disable_ints(bp); | |
fedb0eef MB |
1325 | /* reset PHY */ |
1326 | b44_phy_reset(bp); | |
1327 | /* power down PHY */ | |
2fc96fff | 1328 | netdev_info(bp->dev, "powering down PHY\n"); |
fedb0eef MB |
1329 | bw32(bp, B44_MAC_CTRL, MAC_CTRL_PHY_PDOWN); |
1330 | /* now reset the chip, but without enabling the MAC&PHY | |
1331 | * part of it. This has to be done _after_ we shut down the PHY */ | |
1332 | b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL); | |
1da177e4 LT |
1333 | } |
1334 | ||
1335 | /* bp->lock is held. */ | |
1336 | static void __b44_set_mac_addr(struct b44 *bp) | |
1337 | { | |
1338 | bw32(bp, B44_CAM_CTRL, 0); | |
1339 | if (!(bp->dev->flags & IFF_PROMISC)) { | |
1340 | u32 val; | |
1341 | ||
1342 | __b44_cam_write(bp, bp->dev->dev_addr, 0); | |
1343 | val = br32(bp, B44_CAM_CTRL); | |
1344 | bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE); | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | static int b44_set_mac_addr(struct net_device *dev, void *p) | |
1349 | { | |
1350 | struct b44 *bp = netdev_priv(dev); | |
1351 | struct sockaddr *addr = p; | |
753f4920 | 1352 | u32 val; |
1da177e4 LT |
1353 | |
1354 | if (netif_running(dev)) | |
1355 | return -EBUSY; | |
1356 | ||
391fc09a GZ |
1357 | if (!is_valid_ether_addr(addr->sa_data)) |
1358 | return -EINVAL; | |
1359 | ||
1da177e4 LT |
1360 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
1361 | ||
1362 | spin_lock_irq(&bp->lock); | |
753f4920 MB |
1363 | |
1364 | val = br32(bp, B44_RXCONFIG); | |
1365 | if (!(val & RXCONFIG_CAM_ABSENT)) | |
1366 | __b44_set_mac_addr(bp); | |
1367 | ||
1da177e4 LT |
1368 | spin_unlock_irq(&bp->lock); |
1369 | ||
1370 | return 0; | |
1371 | } | |
1372 | ||
1373 | /* Called at device open time to get the chip ready for | |
1374 | * packet processing. Invoked with bp->lock held. | |
1375 | */ | |
1376 | static void __b44_set_rx_mode(struct net_device *); | |
5fc7d61a | 1377 | static void b44_init_hw(struct b44 *bp, int reset_kind) |
1da177e4 LT |
1378 | { |
1379 | u32 val; | |
1380 | ||
fedb0eef | 1381 | b44_chip_reset(bp, B44_CHIP_RESET_FULL); |
5fc7d61a | 1382 | if (reset_kind == B44_FULL_RESET) { |
00e8b3aa GZ |
1383 | b44_phy_reset(bp); |
1384 | b44_setup_phy(bp); | |
1385 | } | |
1da177e4 LT |
1386 | |
1387 | /* Enable CRC32, set proper LED modes and power on PHY */ | |
1388 | bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL); | |
1389 | bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT)); | |
1390 | ||
1391 | /* This sets the MAC address too. */ | |
1392 | __b44_set_rx_mode(bp->dev); | |
1393 | ||
1394 | /* MTU + eth header + possible VLAN tag + struct rx_header */ | |
1395 | bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN); | |
1396 | bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN); | |
1397 | ||
1398 | bw32(bp, B44_TX_WMARK, 56); /* XXX magic */ | |
5fc7d61a MC |
1399 | if (reset_kind == B44_PARTIAL_RESET) { |
1400 | bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE | | |
72f4861e | 1401 | (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT))); |
5fc7d61a | 1402 | } else { |
00e8b3aa GZ |
1403 | bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE); |
1404 | bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset); | |
1405 | bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE | | |
72f4861e | 1406 | (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT))); |
00e8b3aa | 1407 | bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset); |
1da177e4 | 1408 | |
00e8b3aa GZ |
1409 | bw32(bp, B44_DMARX_PTR, bp->rx_pending); |
1410 | bp->rx_prod = bp->rx_pending; | |
1da177e4 | 1411 | |
00e8b3aa | 1412 | bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); |
00e8b3aa | 1413 | } |
1da177e4 LT |
1414 | |
1415 | val = br32(bp, B44_ENET_CTRL); | |
1416 | bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE)); | |
1417 | } | |
1418 | ||
1419 | static int b44_open(struct net_device *dev) | |
1420 | { | |
1421 | struct b44 *bp = netdev_priv(dev); | |
1422 | int err; | |
1423 | ||
753f4920 | 1424 | err = b44_alloc_consistent(bp, GFP_KERNEL); |
1da177e4 | 1425 | if (err) |
6c2f4267 | 1426 | goto out; |
1da177e4 | 1427 | |
bea3348e SH |
1428 | napi_enable(&bp->napi); |
1429 | ||
1da177e4 | 1430 | b44_init_rings(bp); |
5fc7d61a | 1431 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 | 1432 | |
e254e9bf JL |
1433 | b44_check_phy(bp); |
1434 | ||
1fb9df5d | 1435 | err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev); |
6c2f4267 | 1436 | if (unlikely(err < 0)) { |
bea3348e | 1437 | napi_disable(&bp->napi); |
fedb0eef | 1438 | b44_chip_reset(bp, B44_CHIP_RESET_PARTIAL); |
6c2f4267 FR |
1439 | b44_free_rings(bp); |
1440 | b44_free_consistent(bp); | |
1441 | goto out; | |
1442 | } | |
1da177e4 LT |
1443 | |
1444 | init_timer(&bp->timer); | |
1445 | bp->timer.expires = jiffies + HZ; | |
1446 | bp->timer.data = (unsigned long) bp; | |
1447 | bp->timer.function = b44_timer; | |
1448 | add_timer(&bp->timer); | |
1449 | ||
1450 | b44_enable_ints(bp); | |
d9e2d185 | 1451 | netif_start_queue(dev); |
6c2f4267 | 1452 | out: |
1da177e4 LT |
1453 | return err; |
1454 | } | |
1455 | ||
1da177e4 LT |
1456 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1457 | /* | |
1458 | * Polling receive - used by netconsole and other diagnostic tools | |
1459 | * to allow network i/o with interrupts disabled. | |
1460 | */ | |
1461 | static void b44_poll_controller(struct net_device *dev) | |
1462 | { | |
1463 | disable_irq(dev->irq); | |
7d12e780 | 1464 | b44_interrupt(dev->irq, dev); |
1da177e4 LT |
1465 | enable_irq(dev->irq); |
1466 | } | |
1467 | #endif | |
1468 | ||
725ad800 GZ |
1469 | static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset) |
1470 | { | |
1471 | u32 i; | |
1472 | u32 *pattern = (u32 *) pp; | |
1473 | ||
1474 | for (i = 0; i < bytes; i += sizeof(u32)) { | |
1475 | bw32(bp, B44_FILT_ADDR, table_offset + i); | |
1476 | bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]); | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset) | |
1481 | { | |
1482 | int magicsync = 6; | |
1483 | int k, j, len = offset; | |
1484 | int ethaddr_bytes = ETH_ALEN; | |
1485 | ||
1486 | memset(ppattern + offset, 0xff, magicsync); | |
1487 | for (j = 0; j < magicsync; j++) | |
1488 | set_bit(len++, (unsigned long *) pmask); | |
1489 | ||
1490 | for (j = 0; j < B44_MAX_PATTERNS; j++) { | |
1491 | if ((B44_PATTERN_SIZE - len) >= ETH_ALEN) | |
1492 | ethaddr_bytes = ETH_ALEN; | |
1493 | else | |
1494 | ethaddr_bytes = B44_PATTERN_SIZE - len; | |
1495 | if (ethaddr_bytes <=0) | |
1496 | break; | |
1497 | for (k = 0; k< ethaddr_bytes; k++) { | |
1498 | ppattern[offset + magicsync + | |
1499 | (j * ETH_ALEN) + k] = macaddr[k]; | |
e0188829 | 1500 | set_bit(len++, (unsigned long *) pmask); |
725ad800 GZ |
1501 | } |
1502 | } | |
1503 | return len - 1; | |
1504 | } | |
1505 | ||
1506 | /* Setup magic packet patterns in the b44 WOL | |
1507 | * pattern matching filter. | |
1508 | */ | |
1509 | static void b44_setup_pseudo_magicp(struct b44 *bp) | |
1510 | { | |
1511 | ||
1512 | u32 val; | |
1513 | int plen0, plen1, plen2; | |
1514 | u8 *pwol_pattern; | |
1515 | u8 pwol_mask[B44_PMASK_SIZE]; | |
1516 | ||
dd00cc48 | 1517 | pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL); |
725ad800 | 1518 | if (!pwol_pattern) { |
2fc96fff | 1519 | pr_err("Memory not available for WOL\n"); |
725ad800 GZ |
1520 | return; |
1521 | } | |
1522 | ||
1523 | /* Ipv4 magic packet pattern - pattern 0.*/ | |
725ad800 GZ |
1524 | memset(pwol_mask, 0, B44_PMASK_SIZE); |
1525 | plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, | |
1526 | B44_ETHIPV4UDP_HLEN); | |
1527 | ||
1528 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE); | |
1529 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE); | |
1530 | ||
1531 | /* Raw ethernet II magic packet pattern - pattern 1 */ | |
1532 | memset(pwol_pattern, 0, B44_PATTERN_SIZE); | |
1533 | memset(pwol_mask, 0, B44_PMASK_SIZE); | |
1534 | plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, | |
1535 | ETH_HLEN); | |
1536 | ||
1537 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, | |
1538 | B44_PATTERN_BASE + B44_PATTERN_SIZE); | |
1539 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, | |
1540 | B44_PMASK_BASE + B44_PMASK_SIZE); | |
1541 | ||
1542 | /* Ipv6 magic packet pattern - pattern 2 */ | |
1543 | memset(pwol_pattern, 0, B44_PATTERN_SIZE); | |
1544 | memset(pwol_mask, 0, B44_PMASK_SIZE); | |
1545 | plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, | |
1546 | B44_ETHIPV6UDP_HLEN); | |
1547 | ||
1548 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, | |
1549 | B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE); | |
1550 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, | |
1551 | B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE); | |
1552 | ||
1553 | kfree(pwol_pattern); | |
1554 | ||
1555 | /* set these pattern's lengths: one less than each real length */ | |
1556 | val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE; | |
1557 | bw32(bp, B44_WKUP_LEN, val); | |
1558 | ||
1559 | /* enable wakeup pattern matching */ | |
1560 | val = br32(bp, B44_DEVCTRL); | |
1561 | bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE); | |
1562 | ||
1563 | } | |
52cafd96 | 1564 | |
753f4920 MB |
1565 | #ifdef CONFIG_B44_PCI |
1566 | static void b44_setup_wol_pci(struct b44 *bp) | |
1567 | { | |
1568 | u16 val; | |
1569 | ||
1570 | if (bp->sdev->bus->bustype != SSB_BUSTYPE_SSB) { | |
1571 | bw32(bp, SSB_TMSLOW, br32(bp, SSB_TMSLOW) | SSB_TMSLOW_PE); | |
1572 | pci_read_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, &val); | |
1573 | pci_write_config_word(bp->sdev->bus->host_pci, SSB_PMCSR, val | SSB_PE); | |
1574 | } | |
1575 | } | |
1576 | #else | |
1577 | static inline void b44_setup_wol_pci(struct b44 *bp) { } | |
1578 | #endif /* CONFIG_B44_PCI */ | |
1579 | ||
52cafd96 GZ |
1580 | static void b44_setup_wol(struct b44 *bp) |
1581 | { | |
1582 | u32 val; | |
52cafd96 GZ |
1583 | |
1584 | bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI); | |
1585 | ||
1586 | if (bp->flags & B44_FLAG_B0_ANDLATER) { | |
1587 | ||
1588 | bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE); | |
1589 | ||
1590 | val = bp->dev->dev_addr[2] << 24 | | |
1591 | bp->dev->dev_addr[3] << 16 | | |
1592 | bp->dev->dev_addr[4] << 8 | | |
1593 | bp->dev->dev_addr[5]; | |
1594 | bw32(bp, B44_ADDR_LO, val); | |
1595 | ||
1596 | val = bp->dev->dev_addr[0] << 8 | | |
1597 | bp->dev->dev_addr[1]; | |
1598 | bw32(bp, B44_ADDR_HI, val); | |
1599 | ||
1600 | val = br32(bp, B44_DEVCTRL); | |
1601 | bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE); | |
1602 | ||
725ad800 GZ |
1603 | } else { |
1604 | b44_setup_pseudo_magicp(bp); | |
1605 | } | |
753f4920 | 1606 | b44_setup_wol_pci(bp); |
52cafd96 GZ |
1607 | } |
1608 | ||
1da177e4 LT |
1609 | static int b44_close(struct net_device *dev) |
1610 | { | |
1611 | struct b44 *bp = netdev_priv(dev); | |
1612 | ||
1613 | netif_stop_queue(dev); | |
1614 | ||
bea3348e | 1615 | napi_disable(&bp->napi); |
ba5eec9c | 1616 | |
1da177e4 LT |
1617 | del_timer_sync(&bp->timer); |
1618 | ||
1619 | spin_lock_irq(&bp->lock); | |
1620 | ||
1da177e4 LT |
1621 | b44_halt(bp); |
1622 | b44_free_rings(bp); | |
c35ca399 | 1623 | netif_carrier_off(dev); |
1da177e4 LT |
1624 | |
1625 | spin_unlock_irq(&bp->lock); | |
1626 | ||
1627 | free_irq(dev->irq, dev); | |
1628 | ||
52cafd96 | 1629 | if (bp->flags & B44_FLAG_WOL_ENABLE) { |
5fc7d61a | 1630 | b44_init_hw(bp, B44_PARTIAL_RESET); |
52cafd96 GZ |
1631 | b44_setup_wol(bp); |
1632 | } | |
1633 | ||
1da177e4 LT |
1634 | b44_free_consistent(bp); |
1635 | ||
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | static struct net_device_stats *b44_get_stats(struct net_device *dev) | |
1640 | { | |
1641 | struct b44 *bp = netdev_priv(dev); | |
553e2335 | 1642 | struct net_device_stats *nstat = &dev->stats; |
1da177e4 LT |
1643 | struct b44_hw_stats *hwstat = &bp->hw_stats; |
1644 | ||
1645 | /* Convert HW stats into netdevice stats. */ | |
1646 | nstat->rx_packets = hwstat->rx_pkts; | |
1647 | nstat->tx_packets = hwstat->tx_pkts; | |
1648 | nstat->rx_bytes = hwstat->rx_octets; | |
1649 | nstat->tx_bytes = hwstat->tx_octets; | |
1650 | nstat->tx_errors = (hwstat->tx_jabber_pkts + | |
1651 | hwstat->tx_oversize_pkts + | |
1652 | hwstat->tx_underruns + | |
1653 | hwstat->tx_excessive_cols + | |
1654 | hwstat->tx_late_cols); | |
1655 | nstat->multicast = hwstat->tx_multicast_pkts; | |
1656 | nstat->collisions = hwstat->tx_total_cols; | |
1657 | ||
1658 | nstat->rx_length_errors = (hwstat->rx_oversize_pkts + | |
1659 | hwstat->rx_undersize); | |
1660 | nstat->rx_over_errors = hwstat->rx_missed_pkts; | |
1661 | nstat->rx_frame_errors = hwstat->rx_align_errs; | |
1662 | nstat->rx_crc_errors = hwstat->rx_crc_errs; | |
1663 | nstat->rx_errors = (hwstat->rx_jabber_pkts + | |
1664 | hwstat->rx_oversize_pkts + | |
1665 | hwstat->rx_missed_pkts + | |
1666 | hwstat->rx_crc_align_errs + | |
1667 | hwstat->rx_undersize + | |
1668 | hwstat->rx_crc_errs + | |
1669 | hwstat->rx_align_errs + | |
1670 | hwstat->rx_symbol_errs); | |
1671 | ||
1672 | nstat->tx_aborted_errors = hwstat->tx_underruns; | |
1673 | #if 0 | |
1674 | /* Carrier lost counter seems to be broken for some devices */ | |
1675 | nstat->tx_carrier_errors = hwstat->tx_carrier_lost; | |
1676 | #endif | |
1677 | ||
1678 | return nstat; | |
1679 | } | |
1680 | ||
1681 | static int __b44_load_mcast(struct b44 *bp, struct net_device *dev) | |
1682 | { | |
22bedad3 | 1683 | struct netdev_hw_addr *ha; |
1da177e4 LT |
1684 | int i, num_ents; |
1685 | ||
4cd24eaf | 1686 | num_ents = min_t(int, netdev_mc_count(dev), B44_MCAST_TABLE_SIZE); |
0ddf477b | 1687 | i = 0; |
22bedad3 | 1688 | netdev_for_each_mc_addr(ha, dev) { |
0ddf477b JP |
1689 | if (i == num_ents) |
1690 | break; | |
22bedad3 | 1691 | __b44_cam_write(bp, ha->addr, i++ + 1); |
1da177e4 LT |
1692 | } |
1693 | return i+1; | |
1694 | } | |
1695 | ||
1696 | static void __b44_set_rx_mode(struct net_device *dev) | |
1697 | { | |
1698 | struct b44 *bp = netdev_priv(dev); | |
1699 | u32 val; | |
1da177e4 LT |
1700 | |
1701 | val = br32(bp, B44_RXCONFIG); | |
1702 | val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI); | |
753f4920 | 1703 | if ((dev->flags & IFF_PROMISC) || (val & RXCONFIG_CAM_ABSENT)) { |
1da177e4 LT |
1704 | val |= RXCONFIG_PROMISC; |
1705 | bw32(bp, B44_RXCONFIG, val); | |
1706 | } else { | |
874a6214 | 1707 | unsigned char zero[6] = {0, 0, 0, 0, 0, 0}; |
cda22aa9 | 1708 | int i = 1; |
874a6214 | 1709 | |
1da177e4 LT |
1710 | __b44_set_mac_addr(bp); |
1711 | ||
2f614fe0 | 1712 | if ((dev->flags & IFF_ALLMULTI) || |
4cd24eaf | 1713 | (netdev_mc_count(dev) > B44_MCAST_TABLE_SIZE)) |
1da177e4 LT |
1714 | val |= RXCONFIG_ALLMULTI; |
1715 | else | |
874a6214 | 1716 | i = __b44_load_mcast(bp, dev); |
10badc21 | 1717 | |
2f614fe0 | 1718 | for (; i < 64; i++) |
10badc21 | 1719 | __b44_cam_write(bp, zero, i); |
2f614fe0 | 1720 | |
1da177e4 LT |
1721 | bw32(bp, B44_RXCONFIG, val); |
1722 | val = br32(bp, B44_CAM_CTRL); | |
1723 | bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE); | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | static void b44_set_rx_mode(struct net_device *dev) | |
1728 | { | |
1729 | struct b44 *bp = netdev_priv(dev); | |
1730 | ||
1731 | spin_lock_irq(&bp->lock); | |
1732 | __b44_set_rx_mode(dev); | |
1733 | spin_unlock_irq(&bp->lock); | |
1734 | } | |
1735 | ||
1736 | static u32 b44_get_msglevel(struct net_device *dev) | |
1737 | { | |
1738 | struct b44 *bp = netdev_priv(dev); | |
1739 | return bp->msg_enable; | |
1740 | } | |
1741 | ||
1742 | static void b44_set_msglevel(struct net_device *dev, u32 value) | |
1743 | { | |
1744 | struct b44 *bp = netdev_priv(dev); | |
1745 | bp->msg_enable = value; | |
1746 | } | |
1747 | ||
1748 | static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) | |
1749 | { | |
1750 | struct b44 *bp = netdev_priv(dev); | |
753f4920 | 1751 | struct ssb_bus *bus = bp->sdev->bus; |
1da177e4 | 1752 | |
27e09551 | 1753 | strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver)); |
1754 | strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version)); | |
753f4920 MB |
1755 | switch (bus->bustype) { |
1756 | case SSB_BUSTYPE_PCI: | |
27e09551 | 1757 | strlcpy(info->bus_info, pci_name(bus->host_pci), sizeof(info->bus_info)); |
753f4920 | 1758 | break; |
753f4920 | 1759 | case SSB_BUSTYPE_SSB: |
27e09551 | 1760 | strlcpy(info->bus_info, "SSB", sizeof(info->bus_info)); |
753f4920 | 1761 | break; |
98a1e2a9 MB |
1762 | case SSB_BUSTYPE_PCMCIA: |
1763 | case SSB_BUSTYPE_SDIO: | |
1764 | WARN_ON(1); /* A device with this bus does not exist. */ | |
1765 | break; | |
753f4920 | 1766 | } |
1da177e4 LT |
1767 | } |
1768 | ||
1769 | static int b44_nway_reset(struct net_device *dev) | |
1770 | { | |
1771 | struct b44 *bp = netdev_priv(dev); | |
1772 | u32 bmcr; | |
1773 | int r; | |
1774 | ||
1775 | spin_lock_irq(&bp->lock); | |
1776 | b44_readphy(bp, MII_BMCR, &bmcr); | |
1777 | b44_readphy(bp, MII_BMCR, &bmcr); | |
1778 | r = -EINVAL; | |
1779 | if (bmcr & BMCR_ANENABLE) { | |
1780 | b44_writephy(bp, MII_BMCR, | |
1781 | bmcr | BMCR_ANRESTART); | |
1782 | r = 0; | |
1783 | } | |
1784 | spin_unlock_irq(&bp->lock); | |
1785 | ||
1786 | return r; | |
1787 | } | |
1788 | ||
1789 | static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1790 | { | |
1791 | struct b44 *bp = netdev_priv(dev); | |
1792 | ||
1da177e4 LT |
1793 | cmd->supported = (SUPPORTED_Autoneg); |
1794 | cmd->supported |= (SUPPORTED_100baseT_Half | | |
1795 | SUPPORTED_100baseT_Full | | |
1796 | SUPPORTED_10baseT_Half | | |
1797 | SUPPORTED_10baseT_Full | | |
1798 | SUPPORTED_MII); | |
1799 | ||
1800 | cmd->advertising = 0; | |
1801 | if (bp->flags & B44_FLAG_ADV_10HALF) | |
adf6e000 | 1802 | cmd->advertising |= ADVERTISED_10baseT_Half; |
1da177e4 | 1803 | if (bp->flags & B44_FLAG_ADV_10FULL) |
adf6e000 | 1804 | cmd->advertising |= ADVERTISED_10baseT_Full; |
1da177e4 | 1805 | if (bp->flags & B44_FLAG_ADV_100HALF) |
adf6e000 | 1806 | cmd->advertising |= ADVERTISED_100baseT_Half; |
1da177e4 | 1807 | if (bp->flags & B44_FLAG_ADV_100FULL) |
adf6e000 MW |
1808 | cmd->advertising |= ADVERTISED_100baseT_Full; |
1809 | cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause; | |
1da177e4 LT |
1810 | cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ? |
1811 | SPEED_100 : SPEED_10; | |
1812 | cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ? | |
1813 | DUPLEX_FULL : DUPLEX_HALF; | |
1814 | cmd->port = 0; | |
1815 | cmd->phy_address = bp->phy_addr; | |
1816 | cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ? | |
1817 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
1818 | cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ? | |
1819 | AUTONEG_DISABLE : AUTONEG_ENABLE; | |
47b9c3b1 GZ |
1820 | if (cmd->autoneg == AUTONEG_ENABLE) |
1821 | cmd->advertising |= ADVERTISED_Autoneg; | |
1822 | if (!netif_running(dev)){ | |
1823 | cmd->speed = 0; | |
1824 | cmd->duplex = 0xff; | |
1825 | } | |
1da177e4 LT |
1826 | cmd->maxtxpkt = 0; |
1827 | cmd->maxrxpkt = 0; | |
1828 | return 0; | |
1829 | } | |
1830 | ||
1831 | static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1832 | { | |
1833 | struct b44 *bp = netdev_priv(dev); | |
1834 | ||
1da177e4 LT |
1835 | /* We do not support gigabit. */ |
1836 | if (cmd->autoneg == AUTONEG_ENABLE) { | |
1837 | if (cmd->advertising & | |
1838 | (ADVERTISED_1000baseT_Half | | |
1839 | ADVERTISED_1000baseT_Full)) | |
1840 | return -EINVAL; | |
1841 | } else if ((cmd->speed != SPEED_100 && | |
1842 | cmd->speed != SPEED_10) || | |
1843 | (cmd->duplex != DUPLEX_HALF && | |
1844 | cmd->duplex != DUPLEX_FULL)) { | |
1845 | return -EINVAL; | |
1846 | } | |
1847 | ||
1848 | spin_lock_irq(&bp->lock); | |
1849 | ||
1850 | if (cmd->autoneg == AUTONEG_ENABLE) { | |
47b9c3b1 GZ |
1851 | bp->flags &= ~(B44_FLAG_FORCE_LINK | |
1852 | B44_FLAG_100_BASE_T | | |
1853 | B44_FLAG_FULL_DUPLEX | | |
1854 | B44_FLAG_ADV_10HALF | | |
1da177e4 LT |
1855 | B44_FLAG_ADV_10FULL | |
1856 | B44_FLAG_ADV_100HALF | | |
1857 | B44_FLAG_ADV_100FULL); | |
47b9c3b1 GZ |
1858 | if (cmd->advertising == 0) { |
1859 | bp->flags |= (B44_FLAG_ADV_10HALF | | |
1860 | B44_FLAG_ADV_10FULL | | |
1861 | B44_FLAG_ADV_100HALF | | |
1862 | B44_FLAG_ADV_100FULL); | |
1863 | } else { | |
1864 | if (cmd->advertising & ADVERTISED_10baseT_Half) | |
1865 | bp->flags |= B44_FLAG_ADV_10HALF; | |
1866 | if (cmd->advertising & ADVERTISED_10baseT_Full) | |
1867 | bp->flags |= B44_FLAG_ADV_10FULL; | |
1868 | if (cmd->advertising & ADVERTISED_100baseT_Half) | |
1869 | bp->flags |= B44_FLAG_ADV_100HALF; | |
1870 | if (cmd->advertising & ADVERTISED_100baseT_Full) | |
1871 | bp->flags |= B44_FLAG_ADV_100FULL; | |
1872 | } | |
1da177e4 LT |
1873 | } else { |
1874 | bp->flags |= B44_FLAG_FORCE_LINK; | |
47b9c3b1 | 1875 | bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX); |
1da177e4 LT |
1876 | if (cmd->speed == SPEED_100) |
1877 | bp->flags |= B44_FLAG_100_BASE_T; | |
1878 | if (cmd->duplex == DUPLEX_FULL) | |
1879 | bp->flags |= B44_FLAG_FULL_DUPLEX; | |
1880 | } | |
1881 | ||
47b9c3b1 GZ |
1882 | if (netif_running(dev)) |
1883 | b44_setup_phy(bp); | |
1da177e4 LT |
1884 | |
1885 | spin_unlock_irq(&bp->lock); | |
1886 | ||
1887 | return 0; | |
1888 | } | |
1889 | ||
1890 | static void b44_get_ringparam(struct net_device *dev, | |
1891 | struct ethtool_ringparam *ering) | |
1892 | { | |
1893 | struct b44 *bp = netdev_priv(dev); | |
1894 | ||
1895 | ering->rx_max_pending = B44_RX_RING_SIZE - 1; | |
1896 | ering->rx_pending = bp->rx_pending; | |
1897 | ||
1898 | /* XXX ethtool lacks a tx_max_pending, oops... */ | |
1899 | } | |
1900 | ||
1901 | static int b44_set_ringparam(struct net_device *dev, | |
1902 | struct ethtool_ringparam *ering) | |
1903 | { | |
1904 | struct b44 *bp = netdev_priv(dev); | |
1905 | ||
1906 | if ((ering->rx_pending > B44_RX_RING_SIZE - 1) || | |
1907 | (ering->rx_mini_pending != 0) || | |
1908 | (ering->rx_jumbo_pending != 0) || | |
1909 | (ering->tx_pending > B44_TX_RING_SIZE - 1)) | |
1910 | return -EINVAL; | |
1911 | ||
1912 | spin_lock_irq(&bp->lock); | |
1913 | ||
1914 | bp->rx_pending = ering->rx_pending; | |
1915 | bp->tx_pending = ering->tx_pending; | |
1916 | ||
1917 | b44_halt(bp); | |
1918 | b44_init_rings(bp); | |
5fc7d61a | 1919 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
1920 | netif_wake_queue(bp->dev); |
1921 | spin_unlock_irq(&bp->lock); | |
1922 | ||
1923 | b44_enable_ints(bp); | |
10badc21 | 1924 | |
1da177e4 LT |
1925 | return 0; |
1926 | } | |
1927 | ||
1928 | static void b44_get_pauseparam(struct net_device *dev, | |
1929 | struct ethtool_pauseparam *epause) | |
1930 | { | |
1931 | struct b44 *bp = netdev_priv(dev); | |
1932 | ||
1933 | epause->autoneg = | |
1934 | (bp->flags & B44_FLAG_PAUSE_AUTO) != 0; | |
1935 | epause->rx_pause = | |
1936 | (bp->flags & B44_FLAG_RX_PAUSE) != 0; | |
1937 | epause->tx_pause = | |
1938 | (bp->flags & B44_FLAG_TX_PAUSE) != 0; | |
1939 | } | |
1940 | ||
1941 | static int b44_set_pauseparam(struct net_device *dev, | |
1942 | struct ethtool_pauseparam *epause) | |
1943 | { | |
1944 | struct b44 *bp = netdev_priv(dev); | |
1945 | ||
1946 | spin_lock_irq(&bp->lock); | |
1947 | if (epause->autoneg) | |
1948 | bp->flags |= B44_FLAG_PAUSE_AUTO; | |
1949 | else | |
1950 | bp->flags &= ~B44_FLAG_PAUSE_AUTO; | |
1951 | if (epause->rx_pause) | |
1952 | bp->flags |= B44_FLAG_RX_PAUSE; | |
1953 | else | |
1954 | bp->flags &= ~B44_FLAG_RX_PAUSE; | |
1955 | if (epause->tx_pause) | |
1956 | bp->flags |= B44_FLAG_TX_PAUSE; | |
1957 | else | |
1958 | bp->flags &= ~B44_FLAG_TX_PAUSE; | |
1959 | if (bp->flags & B44_FLAG_PAUSE_AUTO) { | |
1960 | b44_halt(bp); | |
1961 | b44_init_rings(bp); | |
5fc7d61a | 1962 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
1963 | } else { |
1964 | __b44_set_flow_ctrl(bp, bp->flags); | |
1965 | } | |
1966 | spin_unlock_irq(&bp->lock); | |
1967 | ||
1968 | b44_enable_ints(bp); | |
10badc21 | 1969 | |
1da177e4 LT |
1970 | return 0; |
1971 | } | |
1972 | ||
3353930d FR |
1973 | static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
1974 | { | |
1975 | switch(stringset) { | |
1976 | case ETH_SS_STATS: | |
1977 | memcpy(data, *b44_gstrings, sizeof(b44_gstrings)); | |
1978 | break; | |
1979 | } | |
1980 | } | |
1981 | ||
b9f2c044 | 1982 | static int b44_get_sset_count(struct net_device *dev, int sset) |
3353930d | 1983 | { |
b9f2c044 JG |
1984 | switch (sset) { |
1985 | case ETH_SS_STATS: | |
1986 | return ARRAY_SIZE(b44_gstrings); | |
1987 | default: | |
1988 | return -EOPNOTSUPP; | |
1989 | } | |
3353930d FR |
1990 | } |
1991 | ||
1992 | static void b44_get_ethtool_stats(struct net_device *dev, | |
1993 | struct ethtool_stats *stats, u64 *data) | |
1994 | { | |
1995 | struct b44 *bp = netdev_priv(dev); | |
1996 | u32 *val = &bp->hw_stats.tx_good_octets; | |
1997 | u32 i; | |
1998 | ||
1999 | spin_lock_irq(&bp->lock); | |
2000 | ||
2001 | b44_stats_update(bp); | |
2002 | ||
2003 | for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++) | |
2004 | *data++ = *val++; | |
2005 | ||
2006 | spin_unlock_irq(&bp->lock); | |
2007 | } | |
2008 | ||
52cafd96 GZ |
2009 | static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
2010 | { | |
2011 | struct b44 *bp = netdev_priv(dev); | |
2012 | ||
2013 | wol->supported = WAKE_MAGIC; | |
2014 | if (bp->flags & B44_FLAG_WOL_ENABLE) | |
2015 | wol->wolopts = WAKE_MAGIC; | |
2016 | else | |
2017 | wol->wolopts = 0; | |
2018 | memset(&wol->sopass, 0, sizeof(wol->sopass)); | |
2019 | } | |
2020 | ||
2021 | static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) | |
2022 | { | |
2023 | struct b44 *bp = netdev_priv(dev); | |
2024 | ||
2025 | spin_lock_irq(&bp->lock); | |
2026 | if (wol->wolopts & WAKE_MAGIC) | |
2027 | bp->flags |= B44_FLAG_WOL_ENABLE; | |
2028 | else | |
2029 | bp->flags &= ~B44_FLAG_WOL_ENABLE; | |
2030 | spin_unlock_irq(&bp->lock); | |
2031 | ||
2032 | return 0; | |
2033 | } | |
2034 | ||
7282d491 | 2035 | static const struct ethtool_ops b44_ethtool_ops = { |
1da177e4 LT |
2036 | .get_drvinfo = b44_get_drvinfo, |
2037 | .get_settings = b44_get_settings, | |
2038 | .set_settings = b44_set_settings, | |
2039 | .nway_reset = b44_nway_reset, | |
2040 | .get_link = ethtool_op_get_link, | |
52cafd96 GZ |
2041 | .get_wol = b44_get_wol, |
2042 | .set_wol = b44_set_wol, | |
1da177e4 LT |
2043 | .get_ringparam = b44_get_ringparam, |
2044 | .set_ringparam = b44_set_ringparam, | |
2045 | .get_pauseparam = b44_get_pauseparam, | |
2046 | .set_pauseparam = b44_set_pauseparam, | |
2047 | .get_msglevel = b44_get_msglevel, | |
2048 | .set_msglevel = b44_set_msglevel, | |
3353930d | 2049 | .get_strings = b44_get_strings, |
b9f2c044 | 2050 | .get_sset_count = b44_get_sset_count, |
3353930d | 2051 | .get_ethtool_stats = b44_get_ethtool_stats, |
1da177e4 LT |
2052 | }; |
2053 | ||
2054 | static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
2055 | { | |
2056 | struct mii_ioctl_data *data = if_mii(ifr); | |
2057 | struct b44 *bp = netdev_priv(dev); | |
3410572d FR |
2058 | int err = -EINVAL; |
2059 | ||
2060 | if (!netif_running(dev)) | |
2061 | goto out; | |
1da177e4 LT |
2062 | |
2063 | spin_lock_irq(&bp->lock); | |
2064 | err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL); | |
2065 | spin_unlock_irq(&bp->lock); | |
3410572d | 2066 | out: |
1da177e4 LT |
2067 | return err; |
2068 | } | |
2069 | ||
1da177e4 LT |
2070 | static int __devinit b44_get_invariants(struct b44 *bp) |
2071 | { | |
753f4920 MB |
2072 | struct ssb_device *sdev = bp->sdev; |
2073 | int err = 0; | |
2074 | u8 *addr; | |
1da177e4 | 2075 | |
753f4920 | 2076 | bp->dma_offset = ssb_dma_translation(sdev); |
1da177e4 | 2077 | |
753f4920 MB |
2078 | if (sdev->bus->bustype == SSB_BUSTYPE_SSB && |
2079 | instance > 1) { | |
458414b2 LF |
2080 | addr = sdev->bus->sprom.et1mac; |
2081 | bp->phy_addr = sdev->bus->sprom.et1phyaddr; | |
753f4920 | 2082 | } else { |
458414b2 LF |
2083 | addr = sdev->bus->sprom.et0mac; |
2084 | bp->phy_addr = sdev->bus->sprom.et0phyaddr; | |
753f4920 | 2085 | } |
5ea79631 MB |
2086 | /* Some ROMs have buggy PHY addresses with the high |
2087 | * bits set (sign extension?). Truncate them to a | |
2088 | * valid PHY address. */ | |
2089 | bp->phy_addr &= 0x1F; | |
2090 | ||
753f4920 | 2091 | memcpy(bp->dev->dev_addr, addr, 6); |
391fc09a GZ |
2092 | |
2093 | if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){ | |
2fc96fff | 2094 | pr_err("Invalid MAC address found in EEPROM\n"); |
391fc09a GZ |
2095 | return -EINVAL; |
2096 | } | |
2097 | ||
2160de53 | 2098 | memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len); |
1da177e4 | 2099 | |
1da177e4 LT |
2100 | bp->imask = IMASK_DEF; |
2101 | ||
10badc21 | 2102 | /* XXX - really required? |
1da177e4 | 2103 | bp->flags |= B44_FLAG_BUGGY_TXPTR; |
753f4920 | 2104 | */ |
52cafd96 | 2105 | |
753f4920 MB |
2106 | if (bp->sdev->id.revision >= 7) |
2107 | bp->flags |= B44_FLAG_B0_ANDLATER; | |
52cafd96 | 2108 | |
1da177e4 LT |
2109 | return err; |
2110 | } | |
2111 | ||
403413e5 SH |
2112 | static const struct net_device_ops b44_netdev_ops = { |
2113 | .ndo_open = b44_open, | |
2114 | .ndo_stop = b44_close, | |
2115 | .ndo_start_xmit = b44_start_xmit, | |
2116 | .ndo_get_stats = b44_get_stats, | |
2117 | .ndo_set_multicast_list = b44_set_rx_mode, | |
2118 | .ndo_set_mac_address = b44_set_mac_addr, | |
2119 | .ndo_validate_addr = eth_validate_addr, | |
2120 | .ndo_do_ioctl = b44_ioctl, | |
2121 | .ndo_tx_timeout = b44_tx_timeout, | |
2122 | .ndo_change_mtu = b44_change_mtu, | |
2123 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2124 | .ndo_poll_controller = b44_poll_controller, | |
2125 | #endif | |
2126 | }; | |
2127 | ||
753f4920 MB |
2128 | static int __devinit b44_init_one(struct ssb_device *sdev, |
2129 | const struct ssb_device_id *ent) | |
1da177e4 LT |
2130 | { |
2131 | static int b44_version_printed = 0; | |
1da177e4 LT |
2132 | struct net_device *dev; |
2133 | struct b44 *bp; | |
0795af57 | 2134 | int err; |
1da177e4 | 2135 | |
753f4920 MB |
2136 | instance++; |
2137 | ||
1da177e4 | 2138 | if (b44_version_printed++ == 0) |
2fc96fff | 2139 | pr_info("%s", version); |
1da177e4 | 2140 | |
1da177e4 LT |
2141 | |
2142 | dev = alloc_etherdev(sizeof(*bp)); | |
2143 | if (!dev) { | |
2fc96fff | 2144 | dev_err(sdev->dev, "Etherdev alloc failed, aborting\n"); |
1da177e4 | 2145 | err = -ENOMEM; |
753f4920 | 2146 | goto out; |
1da177e4 LT |
2147 | } |
2148 | ||
753f4920 | 2149 | SET_NETDEV_DEV(dev, sdev->dev); |
1da177e4 LT |
2150 | |
2151 | /* No interesting netdevice features in this card... */ | |
2152 | dev->features |= 0; | |
2153 | ||
2154 | bp = netdev_priv(dev); | |
753f4920 | 2155 | bp->sdev = sdev; |
1da177e4 | 2156 | bp->dev = dev; |
a58c891a | 2157 | bp->force_copybreak = 0; |
874a6214 FR |
2158 | |
2159 | bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE); | |
1da177e4 LT |
2160 | |
2161 | spin_lock_init(&bp->lock); | |
2162 | ||
1da177e4 LT |
2163 | bp->rx_pending = B44_DEF_RX_RING_PENDING; |
2164 | bp->tx_pending = B44_DEF_TX_RING_PENDING; | |
2165 | ||
403413e5 | 2166 | dev->netdev_ops = &b44_netdev_ops; |
bea3348e | 2167 | netif_napi_add(dev, &bp->napi, b44_poll, 64); |
1da177e4 | 2168 | dev->watchdog_timeo = B44_TX_TIMEOUT; |
753f4920 | 2169 | dev->irq = sdev->irq; |
1da177e4 LT |
2170 | SET_ETHTOOL_OPS(dev, &b44_ethtool_ops); |
2171 | ||
753f4920 MB |
2172 | err = ssb_bus_powerup(sdev->bus, 0); |
2173 | if (err) { | |
2174 | dev_err(sdev->dev, | |
2175 | "Failed to powerup the bus\n"); | |
2176 | goto err_out_free_dev; | |
2177 | } | |
39a6f4bc FT |
2178 | |
2179 | if (dma_set_mask(sdev->dma_dev, DMA_BIT_MASK(30)) || | |
2180 | dma_set_coherent_mask(sdev->dma_dev, DMA_BIT_MASK(30))) { | |
753f4920 | 2181 | dev_err(sdev->dev, |
2fc96fff | 2182 | "Required 30BIT DMA mask unsupported by the system\n"); |
753f4920 MB |
2183 | goto err_out_powerdown; |
2184 | } | |
39a6f4bc | 2185 | |
1da177e4 LT |
2186 | err = b44_get_invariants(bp); |
2187 | if (err) { | |
753f4920 | 2188 | dev_err(sdev->dev, |
2fc96fff | 2189 | "Problem fetching invariants of chip, aborting\n"); |
753f4920 | 2190 | goto err_out_powerdown; |
1da177e4 LT |
2191 | } |
2192 | ||
2193 | bp->mii_if.dev = dev; | |
2194 | bp->mii_if.mdio_read = b44_mii_read; | |
2195 | bp->mii_if.mdio_write = b44_mii_write; | |
2196 | bp->mii_if.phy_id = bp->phy_addr; | |
2197 | bp->mii_if.phy_id_mask = 0x1f; | |
2198 | bp->mii_if.reg_num_mask = 0x1f; | |
2199 | ||
2200 | /* By default, advertise all speed/duplex settings. */ | |
2201 | bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL | | |
2202 | B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL); | |
2203 | ||
2204 | /* By default, auto-negotiate PAUSE. */ | |
2205 | bp->flags |= B44_FLAG_PAUSE_AUTO; | |
2206 | ||
2207 | err = register_netdev(dev); | |
2208 | if (err) { | |
2fc96fff | 2209 | dev_err(sdev->dev, "Cannot register net device, aborting\n"); |
753f4920 | 2210 | goto err_out_powerdown; |
1da177e4 LT |
2211 | } |
2212 | ||
bcf64aa3 PF |
2213 | netif_carrier_off(dev); |
2214 | ||
753f4920 | 2215 | ssb_set_drvdata(sdev, dev); |
1da177e4 | 2216 | |
10badc21 | 2217 | /* Chip reset provides power to the b44 MAC & PCI cores, which |
5c513129 | 2218 | * is necessary for MAC register access. |
10badc21 | 2219 | */ |
fedb0eef | 2220 | b44_chip_reset(bp, B44_CHIP_RESET_FULL); |
5c513129 | 2221 | |
8850dce1 HM |
2222 | /* do a phy reset to test if there is an active phy */ |
2223 | if (b44_phy_reset(bp) < 0) | |
2224 | bp->phy_addr = B44_PHY_ADDR_NO_PHY; | |
2225 | ||
2fc96fff JP |
2226 | netdev_info(dev, "Broadcom 44xx/47xx 10/100BaseT Ethernet %pM\n", |
2227 | dev->dev_addr); | |
1da177e4 LT |
2228 | |
2229 | return 0; | |
2230 | ||
753f4920 MB |
2231 | err_out_powerdown: |
2232 | ssb_bus_may_powerdown(sdev->bus); | |
1da177e4 LT |
2233 | |
2234 | err_out_free_dev: | |
2235 | free_netdev(dev); | |
2236 | ||
753f4920 | 2237 | out: |
1da177e4 LT |
2238 | return err; |
2239 | } | |
2240 | ||
753f4920 | 2241 | static void __devexit b44_remove_one(struct ssb_device *sdev) |
1da177e4 | 2242 | { |
753f4920 | 2243 | struct net_device *dev = ssb_get_drvdata(sdev); |
1da177e4 | 2244 | |
874a6214 | 2245 | unregister_netdev(dev); |
e92aa634 | 2246 | ssb_device_disable(sdev, 0); |
753f4920 | 2247 | ssb_bus_may_powerdown(sdev->bus); |
874a6214 | 2248 | free_netdev(dev); |
fedb0eef | 2249 | ssb_pcihost_set_power_state(sdev, PCI_D3hot); |
753f4920 | 2250 | ssb_set_drvdata(sdev, NULL); |
1da177e4 LT |
2251 | } |
2252 | ||
753f4920 | 2253 | static int b44_suspend(struct ssb_device *sdev, pm_message_t state) |
1da177e4 | 2254 | { |
753f4920 | 2255 | struct net_device *dev = ssb_get_drvdata(sdev); |
1da177e4 LT |
2256 | struct b44 *bp = netdev_priv(dev); |
2257 | ||
753f4920 MB |
2258 | if (!netif_running(dev)) |
2259 | return 0; | |
1da177e4 LT |
2260 | |
2261 | del_timer_sync(&bp->timer); | |
2262 | ||
10badc21 | 2263 | spin_lock_irq(&bp->lock); |
1da177e4 LT |
2264 | |
2265 | b44_halt(bp); | |
10badc21 | 2266 | netif_carrier_off(bp->dev); |
1da177e4 LT |
2267 | netif_device_detach(bp->dev); |
2268 | b44_free_rings(bp); | |
2269 | ||
2270 | spin_unlock_irq(&bp->lock); | |
46e17853 PM |
2271 | |
2272 | free_irq(dev->irq, dev); | |
52cafd96 | 2273 | if (bp->flags & B44_FLAG_WOL_ENABLE) { |
5fc7d61a | 2274 | b44_init_hw(bp, B44_PARTIAL_RESET); |
52cafd96 GZ |
2275 | b44_setup_wol(bp); |
2276 | } | |
753f4920 | 2277 | |
fedb0eef | 2278 | ssb_pcihost_set_power_state(sdev, PCI_D3hot); |
1da177e4 LT |
2279 | return 0; |
2280 | } | |
2281 | ||
753f4920 | 2282 | static int b44_resume(struct ssb_device *sdev) |
1da177e4 | 2283 | { |
753f4920 | 2284 | struct net_device *dev = ssb_get_drvdata(sdev); |
1da177e4 | 2285 | struct b44 *bp = netdev_priv(dev); |
90afd0e5 | 2286 | int rc = 0; |
1da177e4 | 2287 | |
753f4920 | 2288 | rc = ssb_bus_powerup(sdev->bus, 0); |
90afd0e5 | 2289 | if (rc) { |
753f4920 MB |
2290 | dev_err(sdev->dev, |
2291 | "Failed to powerup the bus\n"); | |
90afd0e5 DM |
2292 | return rc; |
2293 | } | |
2294 | ||
1da177e4 LT |
2295 | if (!netif_running(dev)) |
2296 | return 0; | |
2297 | ||
afed4ccb JH |
2298 | spin_lock_irq(&bp->lock); |
2299 | b44_init_rings(bp); | |
2300 | b44_init_hw(bp, B44_FULL_RESET); | |
2301 | spin_unlock_irq(&bp->lock); | |
2302 | ||
2303 | /* | |
2304 | * As a shared interrupt, the handler can be called immediately. To be | |
2305 | * able to check the interrupt status the hardware must already be | |
2306 | * powered back on (b44_init_hw). | |
2307 | */ | |
90afd0e5 DM |
2308 | rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev); |
2309 | if (rc) { | |
2fc96fff | 2310 | netdev_err(dev, "request_irq failed\n"); |
afed4ccb JH |
2311 | spin_lock_irq(&bp->lock); |
2312 | b44_halt(bp); | |
2313 | b44_free_rings(bp); | |
2314 | spin_unlock_irq(&bp->lock); | |
90afd0e5 DM |
2315 | return rc; |
2316 | } | |
46e17853 | 2317 | |
1da177e4 | 2318 | netif_device_attach(bp->dev); |
1da177e4 | 2319 | |
1da177e4 | 2320 | b44_enable_ints(bp); |
d9e2d185 | 2321 | netif_wake_queue(dev); |
a72a8179 SH |
2322 | |
2323 | mod_timer(&bp->timer, jiffies + 1); | |
2324 | ||
1da177e4 LT |
2325 | return 0; |
2326 | } | |
2327 | ||
753f4920 | 2328 | static struct ssb_driver b44_ssb_driver = { |
1da177e4 | 2329 | .name = DRV_MODULE_NAME, |
753f4920 | 2330 | .id_table = b44_ssb_tbl, |
1da177e4 LT |
2331 | .probe = b44_init_one, |
2332 | .remove = __devexit_p(b44_remove_one), | |
753f4920 MB |
2333 | .suspend = b44_suspend, |
2334 | .resume = b44_resume, | |
1da177e4 LT |
2335 | }; |
2336 | ||
753f4920 MB |
2337 | static inline int b44_pci_init(void) |
2338 | { | |
2339 | int err = 0; | |
2340 | #ifdef CONFIG_B44_PCI | |
2341 | err = ssb_pcihost_register(&b44_pci_driver); | |
2342 | #endif | |
2343 | return err; | |
2344 | } | |
2345 | ||
2346 | static inline void b44_pci_exit(void) | |
2347 | { | |
2348 | #ifdef CONFIG_B44_PCI | |
2349 | ssb_pcihost_unregister(&b44_pci_driver); | |
2350 | #endif | |
2351 | } | |
2352 | ||
1da177e4 LT |
2353 | static int __init b44_init(void) |
2354 | { | |
9f38c636 | 2355 | unsigned int dma_desc_align_size = dma_get_cache_alignment(); |
753f4920 | 2356 | int err; |
9f38c636 JL |
2357 | |
2358 | /* Setup paramaters for syncing RX/TX DMA descriptors */ | |
22d4d771 | 2359 | dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc)); |
9f38c636 | 2360 | |
753f4920 MB |
2361 | err = b44_pci_init(); |
2362 | if (err) | |
2363 | return err; | |
2364 | err = ssb_driver_register(&b44_ssb_driver); | |
2365 | if (err) | |
2366 | b44_pci_exit(); | |
2367 | return err; | |
1da177e4 LT |
2368 | } |
2369 | ||
2370 | static void __exit b44_cleanup(void) | |
2371 | { | |
753f4920 MB |
2372 | ssb_driver_unregister(&b44_ssb_driver); |
2373 | b44_pci_exit(); | |
1da177e4 LT |
2374 | } |
2375 | ||
2376 | module_init(b44_init); | |
2377 | module_exit(b44_cleanup); | |
2378 |