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Commit | Line | Data |
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1da177e4 LT |
1 | /* b44.c: Broadcom 4400 device driver. |
2 | * | |
3 | * Copyright (C) 2002 David S. Miller (davem@redhat.com) | |
4 | * Fixed by Pekka Pietikainen (pp@ee.oulu.fi) | |
5 | * | |
6 | * Distribute under GPL. | |
7 | */ | |
8 | ||
9 | #include <linux/kernel.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/moduleparam.h> | |
12 | #include <linux/types.h> | |
13 | #include <linux/netdevice.h> | |
14 | #include <linux/ethtool.h> | |
15 | #include <linux/mii.h> | |
16 | #include <linux/if_ether.h> | |
17 | #include <linux/etherdevice.h> | |
18 | #include <linux/pci.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/init.h> | |
89358f90 | 21 | #include <linux/dma-mapping.h> |
1da177e4 LT |
22 | |
23 | #include <asm/uaccess.h> | |
24 | #include <asm/io.h> | |
25 | #include <asm/irq.h> | |
26 | ||
27 | #include "b44.h" | |
28 | ||
29 | #define DRV_MODULE_NAME "b44" | |
30 | #define PFX DRV_MODULE_NAME ": " | |
981d9c17 FR |
31 | #define DRV_MODULE_VERSION "0.97" |
32 | #define DRV_MODULE_RELDATE "Nov 30, 2005" | |
1da177e4 LT |
33 | |
34 | #define B44_DEF_MSG_ENABLE \ | |
35 | (NETIF_MSG_DRV | \ | |
36 | NETIF_MSG_PROBE | \ | |
37 | NETIF_MSG_LINK | \ | |
38 | NETIF_MSG_TIMER | \ | |
39 | NETIF_MSG_IFDOWN | \ | |
40 | NETIF_MSG_IFUP | \ | |
41 | NETIF_MSG_RX_ERR | \ | |
42 | NETIF_MSG_TX_ERR) | |
43 | ||
44 | /* length of time before we decide the hardware is borked, | |
45 | * and dev->tx_timeout() should be called to fix the problem | |
46 | */ | |
47 | #define B44_TX_TIMEOUT (5 * HZ) | |
48 | ||
49 | /* hardware minimum and maximum for a single frame's data payload */ | |
50 | #define B44_MIN_MTU 60 | |
51 | #define B44_MAX_MTU 1500 | |
52 | ||
53 | #define B44_RX_RING_SIZE 512 | |
54 | #define B44_DEF_RX_RING_PENDING 200 | |
55 | #define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \ | |
56 | B44_RX_RING_SIZE) | |
57 | #define B44_TX_RING_SIZE 512 | |
58 | #define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1) | |
59 | #define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \ | |
60 | B44_TX_RING_SIZE) | |
61 | #define B44_DMA_MASK 0x3fffffff | |
62 | ||
63 | #define TX_RING_GAP(BP) \ | |
64 | (B44_TX_RING_SIZE - (BP)->tx_pending) | |
65 | #define TX_BUFFS_AVAIL(BP) \ | |
66 | (((BP)->tx_cons <= (BP)->tx_prod) ? \ | |
67 | (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \ | |
68 | (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP)) | |
69 | #define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1)) | |
70 | ||
71 | #define RX_PKT_BUF_SZ (1536 + bp->rx_offset + 64) | |
72 | #define TX_PKT_BUF_SZ (B44_MAX_MTU + ETH_HLEN + 8) | |
73 | ||
74 | /* minimum number of free TX descriptors required to wake up TX process */ | |
75 | #define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4) | |
76 | ||
77 | static char version[] __devinitdata = | |
78 | DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; | |
79 | ||
80 | MODULE_AUTHOR("Florian Schirmer, Pekka Pietikainen, David S. Miller"); | |
81 | MODULE_DESCRIPTION("Broadcom 4400 10/100 PCI ethernet driver"); | |
82 | MODULE_LICENSE("GPL"); | |
83 | MODULE_VERSION(DRV_MODULE_VERSION); | |
84 | ||
85 | static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */ | |
86 | module_param(b44_debug, int, 0); | |
87 | MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value"); | |
88 | ||
89 | static struct pci_device_id b44_pci_tbl[] = { | |
90 | { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401, | |
91 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
92 | { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0, | |
93 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
94 | { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1, | |
95 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
96 | { } /* terminate list with empty entry */ | |
97 | }; | |
98 | ||
99 | MODULE_DEVICE_TABLE(pci, b44_pci_tbl); | |
100 | ||
101 | static void b44_halt(struct b44 *); | |
102 | static void b44_init_rings(struct b44 *); | |
103 | static void b44_init_hw(struct b44 *); | |
1da177e4 | 104 | |
9f38c636 JL |
105 | static int dma_desc_align_mask; |
106 | static int dma_desc_sync_size; | |
107 | ||
3353930d FR |
108 | static const char b44_gstrings[][ETH_GSTRING_LEN] = { |
109 | #define _B44(x...) # x, | |
110 | B44_STAT_REG_DECLARE | |
111 | #undef _B44 | |
112 | }; | |
113 | ||
9f38c636 JL |
114 | static inline void b44_sync_dma_desc_for_device(struct pci_dev *pdev, |
115 | dma_addr_t dma_base, | |
116 | unsigned long offset, | |
117 | enum dma_data_direction dir) | |
118 | { | |
119 | dma_sync_single_range_for_device(&pdev->dev, dma_base, | |
120 | offset & dma_desc_align_mask, | |
121 | dma_desc_sync_size, dir); | |
122 | } | |
123 | ||
124 | static inline void b44_sync_dma_desc_for_cpu(struct pci_dev *pdev, | |
125 | dma_addr_t dma_base, | |
126 | unsigned long offset, | |
127 | enum dma_data_direction dir) | |
128 | { | |
129 | dma_sync_single_range_for_cpu(&pdev->dev, dma_base, | |
130 | offset & dma_desc_align_mask, | |
131 | dma_desc_sync_size, dir); | |
132 | } | |
133 | ||
1da177e4 LT |
134 | static inline unsigned long br32(const struct b44 *bp, unsigned long reg) |
135 | { | |
136 | return readl(bp->regs + reg); | |
137 | } | |
138 | ||
139 | static inline void bw32(const struct b44 *bp, | |
140 | unsigned long reg, unsigned long val) | |
141 | { | |
142 | writel(val, bp->regs + reg); | |
143 | } | |
144 | ||
145 | static int b44_wait_bit(struct b44 *bp, unsigned long reg, | |
146 | u32 bit, unsigned long timeout, const int clear) | |
147 | { | |
148 | unsigned long i; | |
149 | ||
150 | for (i = 0; i < timeout; i++) { | |
151 | u32 val = br32(bp, reg); | |
152 | ||
153 | if (clear && !(val & bit)) | |
154 | break; | |
155 | if (!clear && (val & bit)) | |
156 | break; | |
157 | udelay(10); | |
158 | } | |
159 | if (i == timeout) { | |
160 | printk(KERN_ERR PFX "%s: BUG! Timeout waiting for bit %08x of register " | |
161 | "%lx to %s.\n", | |
162 | bp->dev->name, | |
163 | bit, reg, | |
164 | (clear ? "clear" : "set")); | |
165 | return -ENODEV; | |
166 | } | |
167 | return 0; | |
168 | } | |
169 | ||
170 | /* Sonics SiliconBackplane support routines. ROFL, you should see all the | |
171 | * buzz words used on this company's website :-) | |
172 | * | |
173 | * All of these routines must be invoked with bp->lock held and | |
174 | * interrupts disabled. | |
175 | */ | |
176 | ||
177 | #define SB_PCI_DMA 0x40000000 /* Client Mode PCI memory access space (1 GB) */ | |
178 | #define BCM4400_PCI_CORE_ADDR 0x18002000 /* Address of PCI core on BCM4400 cards */ | |
179 | ||
180 | static u32 ssb_get_core_rev(struct b44 *bp) | |
181 | { | |
182 | return (br32(bp, B44_SBIDHIGH) & SBIDHIGH_RC_MASK); | |
183 | } | |
184 | ||
185 | static u32 ssb_pci_setup(struct b44 *bp, u32 cores) | |
186 | { | |
187 | u32 bar_orig, pci_rev, val; | |
188 | ||
189 | pci_read_config_dword(bp->pdev, SSB_BAR0_WIN, &bar_orig); | |
190 | pci_write_config_dword(bp->pdev, SSB_BAR0_WIN, BCM4400_PCI_CORE_ADDR); | |
191 | pci_rev = ssb_get_core_rev(bp); | |
192 | ||
193 | val = br32(bp, B44_SBINTVEC); | |
194 | val |= cores; | |
195 | bw32(bp, B44_SBINTVEC, val); | |
196 | ||
197 | val = br32(bp, SSB_PCI_TRANS_2); | |
198 | val |= SSB_PCI_PREF | SSB_PCI_BURST; | |
199 | bw32(bp, SSB_PCI_TRANS_2, val); | |
200 | ||
201 | pci_write_config_dword(bp->pdev, SSB_BAR0_WIN, bar_orig); | |
202 | ||
203 | return pci_rev; | |
204 | } | |
205 | ||
206 | static void ssb_core_disable(struct b44 *bp) | |
207 | { | |
208 | if (br32(bp, B44_SBTMSLOW) & SBTMSLOW_RESET) | |
209 | return; | |
210 | ||
211 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_REJECT | SBTMSLOW_CLOCK)); | |
212 | b44_wait_bit(bp, B44_SBTMSLOW, SBTMSLOW_REJECT, 100000, 0); | |
213 | b44_wait_bit(bp, B44_SBTMSHIGH, SBTMSHIGH_BUSY, 100000, 1); | |
214 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_FGC | SBTMSLOW_CLOCK | | |
215 | SBTMSLOW_REJECT | SBTMSLOW_RESET)); | |
216 | br32(bp, B44_SBTMSLOW); | |
217 | udelay(1); | |
218 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_REJECT | SBTMSLOW_RESET)); | |
219 | br32(bp, B44_SBTMSLOW); | |
220 | udelay(1); | |
221 | } | |
222 | ||
223 | static void ssb_core_reset(struct b44 *bp) | |
224 | { | |
225 | u32 val; | |
226 | ||
227 | ssb_core_disable(bp); | |
228 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_RESET | SBTMSLOW_CLOCK | SBTMSLOW_FGC)); | |
229 | br32(bp, B44_SBTMSLOW); | |
230 | udelay(1); | |
231 | ||
232 | /* Clear SERR if set, this is a hw bug workaround. */ | |
233 | if (br32(bp, B44_SBTMSHIGH) & SBTMSHIGH_SERR) | |
234 | bw32(bp, B44_SBTMSHIGH, 0); | |
235 | ||
236 | val = br32(bp, B44_SBIMSTATE); | |
237 | if (val & (SBIMSTATE_IBE | SBIMSTATE_TO)) | |
238 | bw32(bp, B44_SBIMSTATE, val & ~(SBIMSTATE_IBE | SBIMSTATE_TO)); | |
239 | ||
240 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_CLOCK | SBTMSLOW_FGC)); | |
241 | br32(bp, B44_SBTMSLOW); | |
242 | udelay(1); | |
243 | ||
244 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_CLOCK)); | |
245 | br32(bp, B44_SBTMSLOW); | |
246 | udelay(1); | |
247 | } | |
248 | ||
249 | static int ssb_core_unit(struct b44 *bp) | |
250 | { | |
251 | #if 0 | |
252 | u32 val = br32(bp, B44_SBADMATCH0); | |
253 | u32 base; | |
254 | ||
255 | type = val & SBADMATCH0_TYPE_MASK; | |
256 | switch (type) { | |
257 | case 0: | |
258 | base = val & SBADMATCH0_BS0_MASK; | |
259 | break; | |
260 | ||
261 | case 1: | |
262 | base = val & SBADMATCH0_BS1_MASK; | |
263 | break; | |
264 | ||
265 | case 2: | |
266 | default: | |
267 | base = val & SBADMATCH0_BS2_MASK; | |
268 | break; | |
269 | }; | |
270 | #endif | |
271 | return 0; | |
272 | } | |
273 | ||
274 | static int ssb_is_core_up(struct b44 *bp) | |
275 | { | |
276 | return ((br32(bp, B44_SBTMSLOW) & (SBTMSLOW_RESET | SBTMSLOW_REJECT | SBTMSLOW_CLOCK)) | |
277 | == SBTMSLOW_CLOCK); | |
278 | } | |
279 | ||
280 | static void __b44_cam_write(struct b44 *bp, unsigned char *data, int index) | |
281 | { | |
282 | u32 val; | |
283 | ||
284 | val = ((u32) data[2]) << 24; | |
285 | val |= ((u32) data[3]) << 16; | |
286 | val |= ((u32) data[4]) << 8; | |
287 | val |= ((u32) data[5]) << 0; | |
288 | bw32(bp, B44_CAM_DATA_LO, val); | |
289 | val = (CAM_DATA_HI_VALID | | |
290 | (((u32) data[0]) << 8) | | |
291 | (((u32) data[1]) << 0)); | |
292 | bw32(bp, B44_CAM_DATA_HI, val); | |
293 | bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE | | |
294 | (index << CAM_CTRL_INDEX_SHIFT))); | |
295 | b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1); | |
296 | } | |
297 | ||
298 | static inline void __b44_disable_ints(struct b44 *bp) | |
299 | { | |
300 | bw32(bp, B44_IMASK, 0); | |
301 | } | |
302 | ||
303 | static void b44_disable_ints(struct b44 *bp) | |
304 | { | |
305 | __b44_disable_ints(bp); | |
306 | ||
307 | /* Flush posted writes. */ | |
308 | br32(bp, B44_IMASK); | |
309 | } | |
310 | ||
311 | static void b44_enable_ints(struct b44 *bp) | |
312 | { | |
313 | bw32(bp, B44_IMASK, bp->imask); | |
314 | } | |
315 | ||
316 | static int b44_readphy(struct b44 *bp, int reg, u32 *val) | |
317 | { | |
318 | int err; | |
319 | ||
320 | bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); | |
321 | bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | | |
322 | (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) | | |
323 | (bp->phy_addr << MDIO_DATA_PMD_SHIFT) | | |
324 | (reg << MDIO_DATA_RA_SHIFT) | | |
325 | (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT))); | |
326 | err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); | |
327 | *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA; | |
328 | ||
329 | return err; | |
330 | } | |
331 | ||
332 | static int b44_writephy(struct b44 *bp, int reg, u32 val) | |
333 | { | |
334 | bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); | |
335 | bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | | |
336 | (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) | | |
337 | (bp->phy_addr << MDIO_DATA_PMD_SHIFT) | | |
338 | (reg << MDIO_DATA_RA_SHIFT) | | |
339 | (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) | | |
340 | (val & MDIO_DATA_DATA))); | |
341 | return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); | |
342 | } | |
343 | ||
344 | /* miilib interface */ | |
345 | /* FIXME FIXME: phy_id is ignored, bp->phy_addr use is unconditional | |
346 | * due to code existing before miilib use was added to this driver. | |
347 | * Someone should remove this artificial driver limitation in | |
348 | * b44_{read,write}phy. bp->phy_addr itself is fine (and needed). | |
349 | */ | |
350 | static int b44_mii_read(struct net_device *dev, int phy_id, int location) | |
351 | { | |
352 | u32 val; | |
353 | struct b44 *bp = netdev_priv(dev); | |
354 | int rc = b44_readphy(bp, location, &val); | |
355 | if (rc) | |
356 | return 0xffffffff; | |
357 | return val; | |
358 | } | |
359 | ||
360 | static void b44_mii_write(struct net_device *dev, int phy_id, int location, | |
361 | int val) | |
362 | { | |
363 | struct b44 *bp = netdev_priv(dev); | |
364 | b44_writephy(bp, location, val); | |
365 | } | |
366 | ||
367 | static int b44_phy_reset(struct b44 *bp) | |
368 | { | |
369 | u32 val; | |
370 | int err; | |
371 | ||
372 | err = b44_writephy(bp, MII_BMCR, BMCR_RESET); | |
373 | if (err) | |
374 | return err; | |
375 | udelay(100); | |
376 | err = b44_readphy(bp, MII_BMCR, &val); | |
377 | if (!err) { | |
378 | if (val & BMCR_RESET) { | |
379 | printk(KERN_ERR PFX "%s: PHY Reset would not complete.\n", | |
380 | bp->dev->name); | |
381 | err = -ENODEV; | |
382 | } | |
383 | } | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags) | |
389 | { | |
390 | u32 val; | |
391 | ||
392 | bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE); | |
393 | bp->flags |= pause_flags; | |
394 | ||
395 | val = br32(bp, B44_RXCONFIG); | |
396 | if (pause_flags & B44_FLAG_RX_PAUSE) | |
397 | val |= RXCONFIG_FLOW; | |
398 | else | |
399 | val &= ~RXCONFIG_FLOW; | |
400 | bw32(bp, B44_RXCONFIG, val); | |
401 | ||
402 | val = br32(bp, B44_MAC_FLOW); | |
403 | if (pause_flags & B44_FLAG_TX_PAUSE) | |
404 | val |= (MAC_FLOW_PAUSE_ENAB | | |
405 | (0xc0 & MAC_FLOW_RX_HI_WATER)); | |
406 | else | |
407 | val &= ~MAC_FLOW_PAUSE_ENAB; | |
408 | bw32(bp, B44_MAC_FLOW, val); | |
409 | } | |
410 | ||
411 | static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote) | |
412 | { | |
413 | u32 pause_enab = bp->flags & (B44_FLAG_TX_PAUSE | | |
414 | B44_FLAG_RX_PAUSE); | |
415 | ||
416 | if (local & ADVERTISE_PAUSE_CAP) { | |
417 | if (local & ADVERTISE_PAUSE_ASYM) { | |
418 | if (remote & LPA_PAUSE_CAP) | |
419 | pause_enab |= (B44_FLAG_TX_PAUSE | | |
420 | B44_FLAG_RX_PAUSE); | |
421 | else if (remote & LPA_PAUSE_ASYM) | |
422 | pause_enab |= B44_FLAG_RX_PAUSE; | |
423 | } else { | |
424 | if (remote & LPA_PAUSE_CAP) | |
425 | pause_enab |= (B44_FLAG_TX_PAUSE | | |
426 | B44_FLAG_RX_PAUSE); | |
427 | } | |
428 | } else if (local & ADVERTISE_PAUSE_ASYM) { | |
429 | if ((remote & LPA_PAUSE_CAP) && | |
430 | (remote & LPA_PAUSE_ASYM)) | |
431 | pause_enab |= B44_FLAG_TX_PAUSE; | |
432 | } | |
433 | ||
434 | __b44_set_flow_ctrl(bp, pause_enab); | |
435 | } | |
436 | ||
437 | static int b44_setup_phy(struct b44 *bp) | |
438 | { | |
439 | u32 val; | |
440 | int err; | |
441 | ||
442 | if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0) | |
443 | goto out; | |
444 | if ((err = b44_writephy(bp, B44_MII_ALEDCTRL, | |
445 | val & MII_ALEDCTRL_ALLMSK)) != 0) | |
446 | goto out; | |
447 | if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0) | |
448 | goto out; | |
449 | if ((err = b44_writephy(bp, B44_MII_TLEDCTRL, | |
450 | val | MII_TLEDCTRL_ENABLE)) != 0) | |
451 | goto out; | |
452 | ||
453 | if (!(bp->flags & B44_FLAG_FORCE_LINK)) { | |
454 | u32 adv = ADVERTISE_CSMA; | |
455 | ||
456 | if (bp->flags & B44_FLAG_ADV_10HALF) | |
457 | adv |= ADVERTISE_10HALF; | |
458 | if (bp->flags & B44_FLAG_ADV_10FULL) | |
459 | adv |= ADVERTISE_10FULL; | |
460 | if (bp->flags & B44_FLAG_ADV_100HALF) | |
461 | adv |= ADVERTISE_100HALF; | |
462 | if (bp->flags & B44_FLAG_ADV_100FULL) | |
463 | adv |= ADVERTISE_100FULL; | |
464 | ||
465 | if (bp->flags & B44_FLAG_PAUSE_AUTO) | |
466 | adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; | |
467 | ||
468 | if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0) | |
469 | goto out; | |
470 | if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE | | |
471 | BMCR_ANRESTART))) != 0) | |
472 | goto out; | |
473 | } else { | |
474 | u32 bmcr; | |
475 | ||
476 | if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0) | |
477 | goto out; | |
478 | bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100); | |
479 | if (bp->flags & B44_FLAG_100_BASE_T) | |
480 | bmcr |= BMCR_SPEED100; | |
481 | if (bp->flags & B44_FLAG_FULL_DUPLEX) | |
482 | bmcr |= BMCR_FULLDPLX; | |
483 | if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0) | |
484 | goto out; | |
485 | ||
486 | /* Since we will not be negotiating there is no safe way | |
487 | * to determine if the link partner supports flow control | |
488 | * or not. So just disable it completely in this case. | |
489 | */ | |
490 | b44_set_flow_ctrl(bp, 0, 0); | |
491 | } | |
492 | ||
493 | out: | |
494 | return err; | |
495 | } | |
496 | ||
497 | static void b44_stats_update(struct b44 *bp) | |
498 | { | |
499 | unsigned long reg; | |
500 | u32 *val; | |
501 | ||
502 | val = &bp->hw_stats.tx_good_octets; | |
503 | for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) { | |
504 | *val++ += br32(bp, reg); | |
505 | } | |
3353930d FR |
506 | |
507 | /* Pad */ | |
508 | reg += 8*4UL; | |
509 | ||
1da177e4 LT |
510 | for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) { |
511 | *val++ += br32(bp, reg); | |
512 | } | |
513 | } | |
514 | ||
515 | static void b44_link_report(struct b44 *bp) | |
516 | { | |
517 | if (!netif_carrier_ok(bp->dev)) { | |
518 | printk(KERN_INFO PFX "%s: Link is down.\n", bp->dev->name); | |
519 | } else { | |
520 | printk(KERN_INFO PFX "%s: Link is up at %d Mbps, %s duplex.\n", | |
521 | bp->dev->name, | |
522 | (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10, | |
523 | (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half"); | |
524 | ||
525 | printk(KERN_INFO PFX "%s: Flow control is %s for TX and " | |
526 | "%s for RX.\n", | |
527 | bp->dev->name, | |
528 | (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off", | |
529 | (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off"); | |
530 | } | |
531 | } | |
532 | ||
533 | static void b44_check_phy(struct b44 *bp) | |
534 | { | |
535 | u32 bmsr, aux; | |
536 | ||
537 | if (!b44_readphy(bp, MII_BMSR, &bmsr) && | |
538 | !b44_readphy(bp, B44_MII_AUXCTRL, &aux) && | |
539 | (bmsr != 0xffff)) { | |
540 | if (aux & MII_AUXCTRL_SPEED) | |
541 | bp->flags |= B44_FLAG_100_BASE_T; | |
542 | else | |
543 | bp->flags &= ~B44_FLAG_100_BASE_T; | |
544 | if (aux & MII_AUXCTRL_DUPLEX) | |
545 | bp->flags |= B44_FLAG_FULL_DUPLEX; | |
546 | else | |
547 | bp->flags &= ~B44_FLAG_FULL_DUPLEX; | |
548 | ||
549 | if (!netif_carrier_ok(bp->dev) && | |
550 | (bmsr & BMSR_LSTATUS)) { | |
551 | u32 val = br32(bp, B44_TX_CTRL); | |
552 | u32 local_adv, remote_adv; | |
553 | ||
554 | if (bp->flags & B44_FLAG_FULL_DUPLEX) | |
555 | val |= TX_CTRL_DUPLEX; | |
556 | else | |
557 | val &= ~TX_CTRL_DUPLEX; | |
558 | bw32(bp, B44_TX_CTRL, val); | |
559 | ||
560 | if (!(bp->flags & B44_FLAG_FORCE_LINK) && | |
561 | !b44_readphy(bp, MII_ADVERTISE, &local_adv) && | |
562 | !b44_readphy(bp, MII_LPA, &remote_adv)) | |
563 | b44_set_flow_ctrl(bp, local_adv, remote_adv); | |
564 | ||
565 | /* Link now up */ | |
566 | netif_carrier_on(bp->dev); | |
567 | b44_link_report(bp); | |
568 | } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) { | |
569 | /* Link now down */ | |
570 | netif_carrier_off(bp->dev); | |
571 | b44_link_report(bp); | |
572 | } | |
573 | ||
574 | if (bmsr & BMSR_RFAULT) | |
575 | printk(KERN_WARNING PFX "%s: Remote fault detected in PHY\n", | |
576 | bp->dev->name); | |
577 | if (bmsr & BMSR_JCD) | |
578 | printk(KERN_WARNING PFX "%s: Jabber detected in PHY\n", | |
579 | bp->dev->name); | |
580 | } | |
581 | } | |
582 | ||
583 | static void b44_timer(unsigned long __opaque) | |
584 | { | |
585 | struct b44 *bp = (struct b44 *) __opaque; | |
586 | ||
587 | spin_lock_irq(&bp->lock); | |
588 | ||
589 | b44_check_phy(bp); | |
590 | ||
591 | b44_stats_update(bp); | |
592 | ||
593 | spin_unlock_irq(&bp->lock); | |
594 | ||
595 | bp->timer.expires = jiffies + HZ; | |
596 | add_timer(&bp->timer); | |
597 | } | |
598 | ||
599 | static void b44_tx(struct b44 *bp) | |
600 | { | |
601 | u32 cur, cons; | |
602 | ||
603 | cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK; | |
604 | cur /= sizeof(struct dma_desc); | |
605 | ||
606 | /* XXX needs updating when NETIF_F_SG is supported */ | |
607 | for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) { | |
608 | struct ring_info *rp = &bp->tx_buffers[cons]; | |
609 | struct sk_buff *skb = rp->skb; | |
610 | ||
611 | if (unlikely(skb == NULL)) | |
612 | BUG(); | |
613 | ||
614 | pci_unmap_single(bp->pdev, | |
615 | pci_unmap_addr(rp, mapping), | |
616 | skb->len, | |
617 | PCI_DMA_TODEVICE); | |
618 | rp->skb = NULL; | |
619 | dev_kfree_skb_irq(skb); | |
620 | } | |
621 | ||
622 | bp->tx_cons = cons; | |
623 | if (netif_queue_stopped(bp->dev) && | |
624 | TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH) | |
625 | netif_wake_queue(bp->dev); | |
626 | ||
627 | bw32(bp, B44_GPTIMER, 0); | |
628 | } | |
629 | ||
630 | /* Works like this. This chip writes a 'struct rx_header" 30 bytes | |
631 | * before the DMA address you give it. So we allocate 30 more bytes | |
632 | * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then | |
633 | * point the chip at 30 bytes past where the rx_header will go. | |
634 | */ | |
635 | static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked) | |
636 | { | |
637 | struct dma_desc *dp; | |
638 | struct ring_info *src_map, *map; | |
639 | struct rx_header *rh; | |
640 | struct sk_buff *skb; | |
641 | dma_addr_t mapping; | |
642 | int dest_idx; | |
643 | u32 ctrl; | |
644 | ||
645 | src_map = NULL; | |
646 | if (src_idx >= 0) | |
647 | src_map = &bp->rx_buffers[src_idx]; | |
648 | dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1); | |
649 | map = &bp->rx_buffers[dest_idx]; | |
650 | skb = dev_alloc_skb(RX_PKT_BUF_SZ); | |
651 | if (skb == NULL) | |
652 | return -ENOMEM; | |
653 | ||
654 | mapping = pci_map_single(bp->pdev, skb->data, | |
655 | RX_PKT_BUF_SZ, | |
656 | PCI_DMA_FROMDEVICE); | |
657 | ||
658 | /* Hardware bug work-around, the chip is unable to do PCI DMA | |
659 | to/from anything above 1GB :-( */ | |
874a6214 | 660 | if (mapping + RX_PKT_BUF_SZ > B44_DMA_MASK) { |
1da177e4 LT |
661 | /* Sigh... */ |
662 | pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE); | |
663 | dev_kfree_skb_any(skb); | |
664 | skb = __dev_alloc_skb(RX_PKT_BUF_SZ,GFP_DMA); | |
665 | if (skb == NULL) | |
666 | return -ENOMEM; | |
667 | mapping = pci_map_single(bp->pdev, skb->data, | |
668 | RX_PKT_BUF_SZ, | |
669 | PCI_DMA_FROMDEVICE); | |
874a6214 | 670 | if (mapping + RX_PKT_BUF_SZ > B44_DMA_MASK) { |
1da177e4 LT |
671 | pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE); |
672 | dev_kfree_skb_any(skb); | |
673 | return -ENOMEM; | |
674 | } | |
675 | } | |
676 | ||
677 | skb->dev = bp->dev; | |
678 | skb_reserve(skb, bp->rx_offset); | |
679 | ||
680 | rh = (struct rx_header *) | |
681 | (skb->data - bp->rx_offset); | |
682 | rh->len = 0; | |
683 | rh->flags = 0; | |
684 | ||
685 | map->skb = skb; | |
686 | pci_unmap_addr_set(map, mapping, mapping); | |
687 | ||
688 | if (src_map != NULL) | |
689 | src_map->skb = NULL; | |
690 | ||
691 | ctrl = (DESC_CTRL_LEN & (RX_PKT_BUF_SZ - bp->rx_offset)); | |
692 | if (dest_idx == (B44_RX_RING_SIZE - 1)) | |
693 | ctrl |= DESC_CTRL_EOT; | |
694 | ||
695 | dp = &bp->rx_ring[dest_idx]; | |
696 | dp->ctrl = cpu_to_le32(ctrl); | |
697 | dp->addr = cpu_to_le32((u32) mapping + bp->rx_offset + bp->dma_offset); | |
698 | ||
9f38c636 JL |
699 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
700 | b44_sync_dma_desc_for_device(bp->pdev, bp->rx_ring_dma, | |
701 | dest_idx * sizeof(dp), | |
702 | DMA_BIDIRECTIONAL); | |
703 | ||
1da177e4 LT |
704 | return RX_PKT_BUF_SZ; |
705 | } | |
706 | ||
707 | static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked) | |
708 | { | |
709 | struct dma_desc *src_desc, *dest_desc; | |
710 | struct ring_info *src_map, *dest_map; | |
711 | struct rx_header *rh; | |
712 | int dest_idx; | |
713 | u32 ctrl; | |
714 | ||
715 | dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1); | |
716 | dest_desc = &bp->rx_ring[dest_idx]; | |
717 | dest_map = &bp->rx_buffers[dest_idx]; | |
718 | src_desc = &bp->rx_ring[src_idx]; | |
719 | src_map = &bp->rx_buffers[src_idx]; | |
720 | ||
721 | dest_map->skb = src_map->skb; | |
722 | rh = (struct rx_header *) src_map->skb->data; | |
723 | rh->len = 0; | |
724 | rh->flags = 0; | |
725 | pci_unmap_addr_set(dest_map, mapping, | |
726 | pci_unmap_addr(src_map, mapping)); | |
727 | ||
9f38c636 JL |
728 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
729 | b44_sync_dma_desc_for_cpu(bp->pdev, bp->rx_ring_dma, | |
730 | src_idx * sizeof(src_desc), | |
731 | DMA_BIDIRECTIONAL); | |
732 | ||
1da177e4 LT |
733 | ctrl = src_desc->ctrl; |
734 | if (dest_idx == (B44_RX_RING_SIZE - 1)) | |
735 | ctrl |= cpu_to_le32(DESC_CTRL_EOT); | |
736 | else | |
737 | ctrl &= cpu_to_le32(~DESC_CTRL_EOT); | |
738 | ||
739 | dest_desc->ctrl = ctrl; | |
740 | dest_desc->addr = src_desc->addr; | |
9f38c636 | 741 | |
1da177e4 LT |
742 | src_map->skb = NULL; |
743 | ||
9f38c636 JL |
744 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
745 | b44_sync_dma_desc_for_device(bp->pdev, bp->rx_ring_dma, | |
746 | dest_idx * sizeof(dest_desc), | |
747 | DMA_BIDIRECTIONAL); | |
748 | ||
1da177e4 LT |
749 | pci_dma_sync_single_for_device(bp->pdev, src_desc->addr, |
750 | RX_PKT_BUF_SZ, | |
751 | PCI_DMA_FROMDEVICE); | |
752 | } | |
753 | ||
754 | static int b44_rx(struct b44 *bp, int budget) | |
755 | { | |
756 | int received; | |
757 | u32 cons, prod; | |
758 | ||
759 | received = 0; | |
760 | prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK; | |
761 | prod /= sizeof(struct dma_desc); | |
762 | cons = bp->rx_cons; | |
763 | ||
764 | while (cons != prod && budget > 0) { | |
765 | struct ring_info *rp = &bp->rx_buffers[cons]; | |
766 | struct sk_buff *skb = rp->skb; | |
767 | dma_addr_t map = pci_unmap_addr(rp, mapping); | |
768 | struct rx_header *rh; | |
769 | u16 len; | |
770 | ||
771 | pci_dma_sync_single_for_cpu(bp->pdev, map, | |
772 | RX_PKT_BUF_SZ, | |
773 | PCI_DMA_FROMDEVICE); | |
774 | rh = (struct rx_header *) skb->data; | |
775 | len = cpu_to_le16(rh->len); | |
776 | if ((len > (RX_PKT_BUF_SZ - bp->rx_offset)) || | |
777 | (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) { | |
778 | drop_it: | |
779 | b44_recycle_rx(bp, cons, bp->rx_prod); | |
780 | drop_it_no_recycle: | |
781 | bp->stats.rx_dropped++; | |
782 | goto next_pkt; | |
783 | } | |
784 | ||
785 | if (len == 0) { | |
786 | int i = 0; | |
787 | ||
788 | do { | |
789 | udelay(2); | |
790 | barrier(); | |
791 | len = cpu_to_le16(rh->len); | |
792 | } while (len == 0 && i++ < 5); | |
793 | if (len == 0) | |
794 | goto drop_it; | |
795 | } | |
796 | ||
797 | /* Omit CRC. */ | |
798 | len -= 4; | |
799 | ||
800 | if (len > RX_COPY_THRESHOLD) { | |
801 | int skb_size; | |
802 | skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod); | |
803 | if (skb_size < 0) | |
804 | goto drop_it; | |
805 | pci_unmap_single(bp->pdev, map, | |
806 | skb_size, PCI_DMA_FROMDEVICE); | |
807 | /* Leave out rx_header */ | |
808 | skb_put(skb, len+bp->rx_offset); | |
809 | skb_pull(skb,bp->rx_offset); | |
810 | } else { | |
811 | struct sk_buff *copy_skb; | |
812 | ||
813 | b44_recycle_rx(bp, cons, bp->rx_prod); | |
814 | copy_skb = dev_alloc_skb(len + 2); | |
815 | if (copy_skb == NULL) | |
816 | goto drop_it_no_recycle; | |
817 | ||
818 | copy_skb->dev = bp->dev; | |
819 | skb_reserve(copy_skb, 2); | |
820 | skb_put(copy_skb, len); | |
821 | /* DMA sync done above, copy just the actual packet */ | |
822 | memcpy(copy_skb->data, skb->data+bp->rx_offset, len); | |
823 | ||
824 | skb = copy_skb; | |
825 | } | |
826 | skb->ip_summed = CHECKSUM_NONE; | |
827 | skb->protocol = eth_type_trans(skb, bp->dev); | |
828 | netif_receive_skb(skb); | |
829 | bp->dev->last_rx = jiffies; | |
830 | received++; | |
831 | budget--; | |
832 | next_pkt: | |
833 | bp->rx_prod = (bp->rx_prod + 1) & | |
834 | (B44_RX_RING_SIZE - 1); | |
835 | cons = (cons + 1) & (B44_RX_RING_SIZE - 1); | |
836 | } | |
837 | ||
838 | bp->rx_cons = cons; | |
839 | bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc)); | |
840 | ||
841 | return received; | |
842 | } | |
843 | ||
844 | static int b44_poll(struct net_device *netdev, int *budget) | |
845 | { | |
846 | struct b44 *bp = netdev_priv(netdev); | |
847 | int done; | |
848 | ||
849 | spin_lock_irq(&bp->lock); | |
850 | ||
851 | if (bp->istat & (ISTAT_TX | ISTAT_TO)) { | |
852 | /* spin_lock(&bp->tx_lock); */ | |
853 | b44_tx(bp); | |
854 | /* spin_unlock(&bp->tx_lock); */ | |
855 | } | |
856 | spin_unlock_irq(&bp->lock); | |
857 | ||
858 | done = 1; | |
859 | if (bp->istat & ISTAT_RX) { | |
860 | int orig_budget = *budget; | |
861 | int work_done; | |
862 | ||
863 | if (orig_budget > netdev->quota) | |
864 | orig_budget = netdev->quota; | |
865 | ||
866 | work_done = b44_rx(bp, orig_budget); | |
867 | ||
868 | *budget -= work_done; | |
869 | netdev->quota -= work_done; | |
870 | ||
871 | if (work_done >= orig_budget) | |
872 | done = 0; | |
873 | } | |
874 | ||
875 | if (bp->istat & ISTAT_ERRORS) { | |
876 | spin_lock_irq(&bp->lock); | |
877 | b44_halt(bp); | |
878 | b44_init_rings(bp); | |
879 | b44_init_hw(bp); | |
880 | netif_wake_queue(bp->dev); | |
881 | spin_unlock_irq(&bp->lock); | |
882 | done = 1; | |
883 | } | |
884 | ||
885 | if (done) { | |
886 | netif_rx_complete(netdev); | |
887 | b44_enable_ints(bp); | |
888 | } | |
889 | ||
890 | return (done ? 0 : 1); | |
891 | } | |
892 | ||
893 | static irqreturn_t b44_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
894 | { | |
895 | struct net_device *dev = dev_id; | |
896 | struct b44 *bp = netdev_priv(dev); | |
1da177e4 LT |
897 | u32 istat, imask; |
898 | int handled = 0; | |
899 | ||
65b984f2 | 900 | spin_lock(&bp->lock); |
1da177e4 LT |
901 | |
902 | istat = br32(bp, B44_ISTAT); | |
903 | imask = br32(bp, B44_IMASK); | |
904 | ||
905 | /* ??? What the fuck is the purpose of the interrupt mask | |
906 | * ??? register if we have to mask it out by hand anyways? | |
907 | */ | |
908 | istat &= imask; | |
909 | if (istat) { | |
910 | handled = 1; | |
ba5eec9c FR |
911 | |
912 | if (unlikely(!netif_running(dev))) { | |
913 | printk(KERN_INFO "%s: late interrupt.\n", dev->name); | |
914 | goto irq_ack; | |
915 | } | |
916 | ||
1da177e4 LT |
917 | if (netif_rx_schedule_prep(dev)) { |
918 | /* NOTE: These writes are posted by the readback of | |
919 | * the ISTAT register below. | |
920 | */ | |
921 | bp->istat = istat; | |
922 | __b44_disable_ints(bp); | |
923 | __netif_rx_schedule(dev); | |
924 | } else { | |
925 | printk(KERN_ERR PFX "%s: Error, poll already scheduled\n", | |
926 | dev->name); | |
927 | } | |
928 | ||
ba5eec9c | 929 | irq_ack: |
1da177e4 LT |
930 | bw32(bp, B44_ISTAT, istat); |
931 | br32(bp, B44_ISTAT); | |
932 | } | |
65b984f2 | 933 | spin_unlock(&bp->lock); |
1da177e4 LT |
934 | return IRQ_RETVAL(handled); |
935 | } | |
936 | ||
937 | static void b44_tx_timeout(struct net_device *dev) | |
938 | { | |
939 | struct b44 *bp = netdev_priv(dev); | |
940 | ||
941 | printk(KERN_ERR PFX "%s: transmit timed out, resetting\n", | |
942 | dev->name); | |
943 | ||
944 | spin_lock_irq(&bp->lock); | |
945 | ||
946 | b44_halt(bp); | |
947 | b44_init_rings(bp); | |
948 | b44_init_hw(bp); | |
949 | ||
950 | spin_unlock_irq(&bp->lock); | |
951 | ||
952 | b44_enable_ints(bp); | |
953 | ||
954 | netif_wake_queue(dev); | |
955 | } | |
956 | ||
957 | static int b44_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
958 | { | |
959 | struct b44 *bp = netdev_priv(dev); | |
960 | struct sk_buff *bounce_skb; | |
c7193693 | 961 | int rc = NETDEV_TX_OK; |
1da177e4 LT |
962 | dma_addr_t mapping; |
963 | u32 len, entry, ctrl; | |
964 | ||
965 | len = skb->len; | |
966 | spin_lock_irq(&bp->lock); | |
967 | ||
968 | /* This is a hard error, log it. */ | |
969 | if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) { | |
970 | netif_stop_queue(dev); | |
1da177e4 LT |
971 | printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n", |
972 | dev->name); | |
c7193693 | 973 | goto err_out; |
1da177e4 LT |
974 | } |
975 | ||
976 | mapping = pci_map_single(bp->pdev, skb->data, len, PCI_DMA_TODEVICE); | |
874a6214 | 977 | if (mapping + len > B44_DMA_MASK) { |
1da177e4 LT |
978 | /* Chip can't handle DMA to/from >1GB, use bounce buffer */ |
979 | pci_unmap_single(bp->pdev, mapping, len, PCI_DMA_TODEVICE); | |
980 | ||
981 | bounce_skb = __dev_alloc_skb(TX_PKT_BUF_SZ, | |
982 | GFP_ATOMIC|GFP_DMA); | |
983 | if (!bounce_skb) | |
c7193693 | 984 | goto err_out; |
1da177e4 LT |
985 | |
986 | mapping = pci_map_single(bp->pdev, bounce_skb->data, | |
987 | len, PCI_DMA_TODEVICE); | |
874a6214 | 988 | if (mapping + len > B44_DMA_MASK) { |
1da177e4 LT |
989 | pci_unmap_single(bp->pdev, mapping, |
990 | len, PCI_DMA_TODEVICE); | |
991 | dev_kfree_skb_any(bounce_skb); | |
c7193693 | 992 | goto err_out; |
1da177e4 LT |
993 | } |
994 | ||
995 | memcpy(skb_put(bounce_skb, len), skb->data, skb->len); | |
996 | dev_kfree_skb_any(skb); | |
997 | skb = bounce_skb; | |
998 | } | |
999 | ||
1000 | entry = bp->tx_prod; | |
1001 | bp->tx_buffers[entry].skb = skb; | |
1002 | pci_unmap_addr_set(&bp->tx_buffers[entry], mapping, mapping); | |
1003 | ||
1004 | ctrl = (len & DESC_CTRL_LEN); | |
1005 | ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF; | |
1006 | if (entry == (B44_TX_RING_SIZE - 1)) | |
1007 | ctrl |= DESC_CTRL_EOT; | |
1008 | ||
1009 | bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl); | |
1010 | bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset); | |
1011 | ||
9f38c636 JL |
1012 | if (bp->flags & B44_FLAG_TX_RING_HACK) |
1013 | b44_sync_dma_desc_for_device(bp->pdev, bp->tx_ring_dma, | |
1014 | entry * sizeof(bp->tx_ring[0]), | |
1015 | DMA_TO_DEVICE); | |
1016 | ||
1da177e4 LT |
1017 | entry = NEXT_TX(entry); |
1018 | ||
1019 | bp->tx_prod = entry; | |
1020 | ||
1021 | wmb(); | |
1022 | ||
1023 | bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc)); | |
1024 | if (bp->flags & B44_FLAG_BUGGY_TXPTR) | |
1025 | bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc)); | |
1026 | if (bp->flags & B44_FLAG_REORDER_BUG) | |
1027 | br32(bp, B44_DMATX_PTR); | |
1028 | ||
1029 | if (TX_BUFFS_AVAIL(bp) < 1) | |
1030 | netif_stop_queue(dev); | |
1031 | ||
c7193693 FR |
1032 | dev->trans_start = jiffies; |
1033 | ||
1034 | out_unlock: | |
1da177e4 LT |
1035 | spin_unlock_irq(&bp->lock); |
1036 | ||
c7193693 | 1037 | return rc; |
1da177e4 | 1038 | |
c7193693 FR |
1039 | err_out: |
1040 | rc = NETDEV_TX_BUSY; | |
1041 | goto out_unlock; | |
1da177e4 LT |
1042 | } |
1043 | ||
1044 | static int b44_change_mtu(struct net_device *dev, int new_mtu) | |
1045 | { | |
1046 | struct b44 *bp = netdev_priv(dev); | |
1047 | ||
1048 | if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU) | |
1049 | return -EINVAL; | |
1050 | ||
1051 | if (!netif_running(dev)) { | |
1052 | /* We'll just catch it later when the | |
1053 | * device is up'd. | |
1054 | */ | |
1055 | dev->mtu = new_mtu; | |
1056 | return 0; | |
1057 | } | |
1058 | ||
1059 | spin_lock_irq(&bp->lock); | |
1060 | b44_halt(bp); | |
1061 | dev->mtu = new_mtu; | |
1062 | b44_init_rings(bp); | |
1063 | b44_init_hw(bp); | |
1064 | spin_unlock_irq(&bp->lock); | |
1065 | ||
1066 | b44_enable_ints(bp); | |
1067 | ||
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | /* Free up pending packets in all rx/tx rings. | |
1072 | * | |
1073 | * The chip has been shut down and the driver detached from | |
1074 | * the networking, so no interrupts or new tx packets will | |
1075 | * end up in the driver. bp->lock is not held and we are not | |
1076 | * in an interrupt context and thus may sleep. | |
1077 | */ | |
1078 | static void b44_free_rings(struct b44 *bp) | |
1079 | { | |
1080 | struct ring_info *rp; | |
1081 | int i; | |
1082 | ||
1083 | for (i = 0; i < B44_RX_RING_SIZE; i++) { | |
1084 | rp = &bp->rx_buffers[i]; | |
1085 | ||
1086 | if (rp->skb == NULL) | |
1087 | continue; | |
1088 | pci_unmap_single(bp->pdev, | |
1089 | pci_unmap_addr(rp, mapping), | |
1090 | RX_PKT_BUF_SZ, | |
1091 | PCI_DMA_FROMDEVICE); | |
1092 | dev_kfree_skb_any(rp->skb); | |
1093 | rp->skb = NULL; | |
1094 | } | |
1095 | ||
1096 | /* XXX needs changes once NETIF_F_SG is set... */ | |
1097 | for (i = 0; i < B44_TX_RING_SIZE; i++) { | |
1098 | rp = &bp->tx_buffers[i]; | |
1099 | ||
1100 | if (rp->skb == NULL) | |
1101 | continue; | |
1102 | pci_unmap_single(bp->pdev, | |
1103 | pci_unmap_addr(rp, mapping), | |
1104 | rp->skb->len, | |
1105 | PCI_DMA_TODEVICE); | |
1106 | dev_kfree_skb_any(rp->skb); | |
1107 | rp->skb = NULL; | |
1108 | } | |
1109 | } | |
1110 | ||
1111 | /* Initialize tx/rx rings for packet processing. | |
1112 | * | |
1113 | * The chip has been shut down and the driver detached from | |
1114 | * the networking, so no interrupts or new tx packets will | |
874a6214 | 1115 | * end up in the driver. |
1da177e4 LT |
1116 | */ |
1117 | static void b44_init_rings(struct b44 *bp) | |
1118 | { | |
1119 | int i; | |
1120 | ||
1121 | b44_free_rings(bp); | |
1122 | ||
1123 | memset(bp->rx_ring, 0, B44_RX_RING_BYTES); | |
1124 | memset(bp->tx_ring, 0, B44_TX_RING_BYTES); | |
1125 | ||
9f38c636 JL |
1126 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
1127 | dma_sync_single_for_device(&bp->pdev->dev, bp->rx_ring_dma, | |
1128 | DMA_TABLE_BYTES, | |
1129 | PCI_DMA_BIDIRECTIONAL); | |
1130 | ||
1131 | if (bp->flags & B44_FLAG_TX_RING_HACK) | |
1132 | dma_sync_single_for_device(&bp->pdev->dev, bp->tx_ring_dma, | |
1133 | DMA_TABLE_BYTES, | |
1134 | PCI_DMA_TODEVICE); | |
1135 | ||
1da177e4 LT |
1136 | for (i = 0; i < bp->rx_pending; i++) { |
1137 | if (b44_alloc_rx_skb(bp, -1, i) < 0) | |
1138 | break; | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | /* | |
1143 | * Must not be invoked with interrupt sources disabled and | |
1144 | * the hardware shutdown down. | |
1145 | */ | |
1146 | static void b44_free_consistent(struct b44 *bp) | |
1147 | { | |
b4558ea9 JJ |
1148 | kfree(bp->rx_buffers); |
1149 | bp->rx_buffers = NULL; | |
1150 | kfree(bp->tx_buffers); | |
1151 | bp->tx_buffers = NULL; | |
1da177e4 | 1152 | if (bp->rx_ring) { |
9f38c636 JL |
1153 | if (bp->flags & B44_FLAG_RX_RING_HACK) { |
1154 | dma_unmap_single(&bp->pdev->dev, bp->rx_ring_dma, | |
1155 | DMA_TABLE_BYTES, | |
1156 | DMA_BIDIRECTIONAL); | |
1157 | kfree(bp->rx_ring); | |
1158 | } else | |
1159 | pci_free_consistent(bp->pdev, DMA_TABLE_BYTES, | |
1160 | bp->rx_ring, bp->rx_ring_dma); | |
1da177e4 | 1161 | bp->rx_ring = NULL; |
9f38c636 | 1162 | bp->flags &= ~B44_FLAG_RX_RING_HACK; |
1da177e4 LT |
1163 | } |
1164 | if (bp->tx_ring) { | |
9f38c636 JL |
1165 | if (bp->flags & B44_FLAG_TX_RING_HACK) { |
1166 | dma_unmap_single(&bp->pdev->dev, bp->tx_ring_dma, | |
1167 | DMA_TABLE_BYTES, | |
1168 | DMA_TO_DEVICE); | |
1169 | kfree(bp->tx_ring); | |
1170 | } else | |
1171 | pci_free_consistent(bp->pdev, DMA_TABLE_BYTES, | |
1172 | bp->tx_ring, bp->tx_ring_dma); | |
1da177e4 | 1173 | bp->tx_ring = NULL; |
9f38c636 | 1174 | bp->flags &= ~B44_FLAG_TX_RING_HACK; |
1da177e4 LT |
1175 | } |
1176 | } | |
1177 | ||
1178 | /* | |
1179 | * Must not be invoked with interrupt sources disabled and | |
1180 | * the hardware shutdown down. Can sleep. | |
1181 | */ | |
1182 | static int b44_alloc_consistent(struct b44 *bp) | |
1183 | { | |
1184 | int size; | |
1185 | ||
1186 | size = B44_RX_RING_SIZE * sizeof(struct ring_info); | |
874a6214 | 1187 | bp->rx_buffers = kzalloc(size, GFP_KERNEL); |
1da177e4 LT |
1188 | if (!bp->rx_buffers) |
1189 | goto out_err; | |
1da177e4 LT |
1190 | |
1191 | size = B44_TX_RING_SIZE * sizeof(struct ring_info); | |
874a6214 | 1192 | bp->tx_buffers = kzalloc(size, GFP_KERNEL); |
1da177e4 LT |
1193 | if (!bp->tx_buffers) |
1194 | goto out_err; | |
1da177e4 LT |
1195 | |
1196 | size = DMA_TABLE_BYTES; | |
1197 | bp->rx_ring = pci_alloc_consistent(bp->pdev, size, &bp->rx_ring_dma); | |
9f38c636 JL |
1198 | if (!bp->rx_ring) { |
1199 | /* Allocation may have failed due to pci_alloc_consistent | |
1200 | insisting on use of GFP_DMA, which is more restrictive | |
1201 | than necessary... */ | |
1202 | struct dma_desc *rx_ring; | |
1203 | dma_addr_t rx_ring_dma; | |
1204 | ||
874a6214 FR |
1205 | rx_ring = kzalloc(size, GFP_KERNEL); |
1206 | if (!rx_ring) | |
9f38c636 JL |
1207 | goto out_err; |
1208 | ||
9f38c636 JL |
1209 | rx_ring_dma = dma_map_single(&bp->pdev->dev, rx_ring, |
1210 | DMA_TABLE_BYTES, | |
1211 | DMA_BIDIRECTIONAL); | |
1212 | ||
1213 | if (rx_ring_dma + size > B44_DMA_MASK) { | |
1214 | kfree(rx_ring); | |
1215 | goto out_err; | |
1216 | } | |
1217 | ||
1218 | bp->rx_ring = rx_ring; | |
1219 | bp->rx_ring_dma = rx_ring_dma; | |
1220 | bp->flags |= B44_FLAG_RX_RING_HACK; | |
1221 | } | |
1da177e4 LT |
1222 | |
1223 | bp->tx_ring = pci_alloc_consistent(bp->pdev, size, &bp->tx_ring_dma); | |
9f38c636 JL |
1224 | if (!bp->tx_ring) { |
1225 | /* Allocation may have failed due to pci_alloc_consistent | |
1226 | insisting on use of GFP_DMA, which is more restrictive | |
1227 | than necessary... */ | |
1228 | struct dma_desc *tx_ring; | |
1229 | dma_addr_t tx_ring_dma; | |
1230 | ||
874a6214 FR |
1231 | tx_ring = kzalloc(size, GFP_KERNEL); |
1232 | if (!tx_ring) | |
9f38c636 JL |
1233 | goto out_err; |
1234 | ||
9f38c636 JL |
1235 | tx_ring_dma = dma_map_single(&bp->pdev->dev, tx_ring, |
1236 | DMA_TABLE_BYTES, | |
1237 | DMA_TO_DEVICE); | |
1238 | ||
1239 | if (tx_ring_dma + size > B44_DMA_MASK) { | |
1240 | kfree(tx_ring); | |
1241 | goto out_err; | |
1242 | } | |
1243 | ||
1244 | bp->tx_ring = tx_ring; | |
1245 | bp->tx_ring_dma = tx_ring_dma; | |
1246 | bp->flags |= B44_FLAG_TX_RING_HACK; | |
1247 | } | |
1da177e4 LT |
1248 | |
1249 | return 0; | |
1250 | ||
1251 | out_err: | |
1252 | b44_free_consistent(bp); | |
1253 | return -ENOMEM; | |
1254 | } | |
1255 | ||
1256 | /* bp->lock is held. */ | |
1257 | static void b44_clear_stats(struct b44 *bp) | |
1258 | { | |
1259 | unsigned long reg; | |
1260 | ||
1261 | bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); | |
1262 | for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) | |
1263 | br32(bp, reg); | |
1264 | for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) | |
1265 | br32(bp, reg); | |
1266 | } | |
1267 | ||
1268 | /* bp->lock is held. */ | |
1269 | static void b44_chip_reset(struct b44 *bp) | |
1270 | { | |
1271 | if (ssb_is_core_up(bp)) { | |
1272 | bw32(bp, B44_RCV_LAZY, 0); | |
1273 | bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE); | |
1274 | b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 100, 1); | |
1275 | bw32(bp, B44_DMATX_CTRL, 0); | |
1276 | bp->tx_prod = bp->tx_cons = 0; | |
1277 | if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) { | |
1278 | b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE, | |
1279 | 100, 0); | |
1280 | } | |
1281 | bw32(bp, B44_DMARX_CTRL, 0); | |
1282 | bp->rx_prod = bp->rx_cons = 0; | |
1283 | } else { | |
1284 | ssb_pci_setup(bp, (bp->core_unit == 0 ? | |
1285 | SBINTVEC_ENET0 : | |
1286 | SBINTVEC_ENET1)); | |
1287 | } | |
1288 | ||
1289 | ssb_core_reset(bp); | |
1290 | ||
1291 | b44_clear_stats(bp); | |
1292 | ||
1293 | /* Make PHY accessible. */ | |
1294 | bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE | | |
1295 | (0x0d & MDIO_CTRL_MAXF_MASK))); | |
1296 | br32(bp, B44_MDIO_CTRL); | |
1297 | ||
1298 | if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) { | |
1299 | bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL); | |
1300 | br32(bp, B44_ENET_CTRL); | |
1301 | bp->flags &= ~B44_FLAG_INTERNAL_PHY; | |
1302 | } else { | |
1303 | u32 val = br32(bp, B44_DEVCTRL); | |
1304 | ||
1305 | if (val & DEVCTRL_EPR) { | |
1306 | bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR)); | |
1307 | br32(bp, B44_DEVCTRL); | |
1308 | udelay(100); | |
1309 | } | |
1310 | bp->flags |= B44_FLAG_INTERNAL_PHY; | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | /* bp->lock is held. */ | |
1315 | static void b44_halt(struct b44 *bp) | |
1316 | { | |
1317 | b44_disable_ints(bp); | |
1318 | b44_chip_reset(bp); | |
1319 | } | |
1320 | ||
1321 | /* bp->lock is held. */ | |
1322 | static void __b44_set_mac_addr(struct b44 *bp) | |
1323 | { | |
1324 | bw32(bp, B44_CAM_CTRL, 0); | |
1325 | if (!(bp->dev->flags & IFF_PROMISC)) { | |
1326 | u32 val; | |
1327 | ||
1328 | __b44_cam_write(bp, bp->dev->dev_addr, 0); | |
1329 | val = br32(bp, B44_CAM_CTRL); | |
1330 | bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE); | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | static int b44_set_mac_addr(struct net_device *dev, void *p) | |
1335 | { | |
1336 | struct b44 *bp = netdev_priv(dev); | |
1337 | struct sockaddr *addr = p; | |
1338 | ||
1339 | if (netif_running(dev)) | |
1340 | return -EBUSY; | |
1341 | ||
1342 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1343 | ||
1344 | spin_lock_irq(&bp->lock); | |
1345 | __b44_set_mac_addr(bp); | |
1346 | spin_unlock_irq(&bp->lock); | |
1347 | ||
1348 | return 0; | |
1349 | } | |
1350 | ||
1351 | /* Called at device open time to get the chip ready for | |
1352 | * packet processing. Invoked with bp->lock held. | |
1353 | */ | |
1354 | static void __b44_set_rx_mode(struct net_device *); | |
1355 | static void b44_init_hw(struct b44 *bp) | |
1356 | { | |
1357 | u32 val; | |
1358 | ||
1359 | b44_chip_reset(bp); | |
1360 | b44_phy_reset(bp); | |
1361 | b44_setup_phy(bp); | |
1362 | ||
1363 | /* Enable CRC32, set proper LED modes and power on PHY */ | |
1364 | bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL); | |
1365 | bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT)); | |
1366 | ||
1367 | /* This sets the MAC address too. */ | |
1368 | __b44_set_rx_mode(bp->dev); | |
1369 | ||
1370 | /* MTU + eth header + possible VLAN tag + struct rx_header */ | |
1371 | bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN); | |
1372 | bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN); | |
1373 | ||
1374 | bw32(bp, B44_TX_WMARK, 56); /* XXX magic */ | |
1375 | bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE); | |
1376 | bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset); | |
1377 | bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE | | |
1378 | (bp->rx_offset << DMARX_CTRL_ROSHIFT))); | |
1379 | bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset); | |
1380 | ||
1381 | bw32(bp, B44_DMARX_PTR, bp->rx_pending); | |
1382 | bp->rx_prod = bp->rx_pending; | |
1383 | ||
1384 | bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); | |
1385 | ||
1386 | val = br32(bp, B44_ENET_CTRL); | |
1387 | bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE)); | |
1388 | } | |
1389 | ||
1390 | static int b44_open(struct net_device *dev) | |
1391 | { | |
1392 | struct b44 *bp = netdev_priv(dev); | |
1393 | int err; | |
1394 | ||
1395 | err = b44_alloc_consistent(bp); | |
1396 | if (err) | |
6c2f4267 | 1397 | goto out; |
1da177e4 LT |
1398 | |
1399 | b44_init_rings(bp); | |
1400 | b44_init_hw(bp); | |
1da177e4 | 1401 | |
e254e9bf JL |
1402 | b44_check_phy(bp); |
1403 | ||
6c2f4267 FR |
1404 | err = request_irq(dev->irq, b44_interrupt, SA_SHIRQ, dev->name, dev); |
1405 | if (unlikely(err < 0)) { | |
1406 | b44_chip_reset(bp); | |
1407 | b44_free_rings(bp); | |
1408 | b44_free_consistent(bp); | |
1409 | goto out; | |
1410 | } | |
1da177e4 LT |
1411 | |
1412 | init_timer(&bp->timer); | |
1413 | bp->timer.expires = jiffies + HZ; | |
1414 | bp->timer.data = (unsigned long) bp; | |
1415 | bp->timer.function = b44_timer; | |
1416 | add_timer(&bp->timer); | |
1417 | ||
1418 | b44_enable_ints(bp); | |
d9e2d185 | 1419 | netif_start_queue(dev); |
6c2f4267 | 1420 | out: |
1da177e4 LT |
1421 | return err; |
1422 | } | |
1423 | ||
1424 | #if 0 | |
1425 | /*static*/ void b44_dump_state(struct b44 *bp) | |
1426 | { | |
1427 | u32 val32, val32_2, val32_3, val32_4, val32_5; | |
1428 | u16 val16; | |
1429 | ||
1430 | pci_read_config_word(bp->pdev, PCI_STATUS, &val16); | |
1431 | printk("DEBUG: PCI status [%04x] \n", val16); | |
1432 | ||
1433 | } | |
1434 | #endif | |
1435 | ||
1436 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1437 | /* | |
1438 | * Polling receive - used by netconsole and other diagnostic tools | |
1439 | * to allow network i/o with interrupts disabled. | |
1440 | */ | |
1441 | static void b44_poll_controller(struct net_device *dev) | |
1442 | { | |
1443 | disable_irq(dev->irq); | |
1444 | b44_interrupt(dev->irq, dev, NULL); | |
1445 | enable_irq(dev->irq); | |
1446 | } | |
1447 | #endif | |
1448 | ||
1449 | static int b44_close(struct net_device *dev) | |
1450 | { | |
1451 | struct b44 *bp = netdev_priv(dev); | |
1452 | ||
1453 | netif_stop_queue(dev); | |
1454 | ||
ba5eec9c FR |
1455 | netif_poll_disable(dev); |
1456 | ||
1da177e4 LT |
1457 | del_timer_sync(&bp->timer); |
1458 | ||
1459 | spin_lock_irq(&bp->lock); | |
1460 | ||
1461 | #if 0 | |
1462 | b44_dump_state(bp); | |
1463 | #endif | |
1464 | b44_halt(bp); | |
1465 | b44_free_rings(bp); | |
c35ca399 | 1466 | netif_carrier_off(dev); |
1da177e4 LT |
1467 | |
1468 | spin_unlock_irq(&bp->lock); | |
1469 | ||
1470 | free_irq(dev->irq, dev); | |
1471 | ||
ba5eec9c FR |
1472 | netif_poll_enable(dev); |
1473 | ||
1da177e4 LT |
1474 | b44_free_consistent(bp); |
1475 | ||
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | static struct net_device_stats *b44_get_stats(struct net_device *dev) | |
1480 | { | |
1481 | struct b44 *bp = netdev_priv(dev); | |
1482 | struct net_device_stats *nstat = &bp->stats; | |
1483 | struct b44_hw_stats *hwstat = &bp->hw_stats; | |
1484 | ||
1485 | /* Convert HW stats into netdevice stats. */ | |
1486 | nstat->rx_packets = hwstat->rx_pkts; | |
1487 | nstat->tx_packets = hwstat->tx_pkts; | |
1488 | nstat->rx_bytes = hwstat->rx_octets; | |
1489 | nstat->tx_bytes = hwstat->tx_octets; | |
1490 | nstat->tx_errors = (hwstat->tx_jabber_pkts + | |
1491 | hwstat->tx_oversize_pkts + | |
1492 | hwstat->tx_underruns + | |
1493 | hwstat->tx_excessive_cols + | |
1494 | hwstat->tx_late_cols); | |
1495 | nstat->multicast = hwstat->tx_multicast_pkts; | |
1496 | nstat->collisions = hwstat->tx_total_cols; | |
1497 | ||
1498 | nstat->rx_length_errors = (hwstat->rx_oversize_pkts + | |
1499 | hwstat->rx_undersize); | |
1500 | nstat->rx_over_errors = hwstat->rx_missed_pkts; | |
1501 | nstat->rx_frame_errors = hwstat->rx_align_errs; | |
1502 | nstat->rx_crc_errors = hwstat->rx_crc_errs; | |
1503 | nstat->rx_errors = (hwstat->rx_jabber_pkts + | |
1504 | hwstat->rx_oversize_pkts + | |
1505 | hwstat->rx_missed_pkts + | |
1506 | hwstat->rx_crc_align_errs + | |
1507 | hwstat->rx_undersize + | |
1508 | hwstat->rx_crc_errs + | |
1509 | hwstat->rx_align_errs + | |
1510 | hwstat->rx_symbol_errs); | |
1511 | ||
1512 | nstat->tx_aborted_errors = hwstat->tx_underruns; | |
1513 | #if 0 | |
1514 | /* Carrier lost counter seems to be broken for some devices */ | |
1515 | nstat->tx_carrier_errors = hwstat->tx_carrier_lost; | |
1516 | #endif | |
1517 | ||
1518 | return nstat; | |
1519 | } | |
1520 | ||
1521 | static int __b44_load_mcast(struct b44 *bp, struct net_device *dev) | |
1522 | { | |
1523 | struct dev_mc_list *mclist; | |
1524 | int i, num_ents; | |
1525 | ||
1526 | num_ents = min_t(int, dev->mc_count, B44_MCAST_TABLE_SIZE); | |
1527 | mclist = dev->mc_list; | |
1528 | for (i = 0; mclist && i < num_ents; i++, mclist = mclist->next) { | |
1529 | __b44_cam_write(bp, mclist->dmi_addr, i + 1); | |
1530 | } | |
1531 | return i+1; | |
1532 | } | |
1533 | ||
1534 | static void __b44_set_rx_mode(struct net_device *dev) | |
1535 | { | |
1536 | struct b44 *bp = netdev_priv(dev); | |
1537 | u32 val; | |
1da177e4 LT |
1538 | |
1539 | val = br32(bp, B44_RXCONFIG); | |
1540 | val &= ~(RXCONFIG_PROMISC | RXCONFIG_ALLMULTI); | |
1541 | if (dev->flags & IFF_PROMISC) { | |
1542 | val |= RXCONFIG_PROMISC; | |
1543 | bw32(bp, B44_RXCONFIG, val); | |
1544 | } else { | |
874a6214 FR |
1545 | unsigned char zero[6] = {0, 0, 0, 0, 0, 0}; |
1546 | int i = 0; | |
1547 | ||
1da177e4 LT |
1548 | __b44_set_mac_addr(bp); |
1549 | ||
1550 | if (dev->flags & IFF_ALLMULTI) | |
1551 | val |= RXCONFIG_ALLMULTI; | |
1552 | else | |
874a6214 | 1553 | i = __b44_load_mcast(bp, dev); |
1da177e4 | 1554 | |
874a6214 | 1555 | for (; i < 64; i++) { |
1da177e4 LT |
1556 | __b44_cam_write(bp, zero, i); |
1557 | } | |
1558 | bw32(bp, B44_RXCONFIG, val); | |
1559 | val = br32(bp, B44_CAM_CTRL); | |
1560 | bw32(bp, B44_CAM_CTRL, val | CAM_CTRL_ENABLE); | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | static void b44_set_rx_mode(struct net_device *dev) | |
1565 | { | |
1566 | struct b44 *bp = netdev_priv(dev); | |
1567 | ||
1568 | spin_lock_irq(&bp->lock); | |
1569 | __b44_set_rx_mode(dev); | |
1570 | spin_unlock_irq(&bp->lock); | |
1571 | } | |
1572 | ||
1573 | static u32 b44_get_msglevel(struct net_device *dev) | |
1574 | { | |
1575 | struct b44 *bp = netdev_priv(dev); | |
1576 | return bp->msg_enable; | |
1577 | } | |
1578 | ||
1579 | static void b44_set_msglevel(struct net_device *dev, u32 value) | |
1580 | { | |
1581 | struct b44 *bp = netdev_priv(dev); | |
1582 | bp->msg_enable = value; | |
1583 | } | |
1584 | ||
1585 | static void b44_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) | |
1586 | { | |
1587 | struct b44 *bp = netdev_priv(dev); | |
1588 | struct pci_dev *pci_dev = bp->pdev; | |
1589 | ||
1590 | strcpy (info->driver, DRV_MODULE_NAME); | |
1591 | strcpy (info->version, DRV_MODULE_VERSION); | |
1592 | strcpy (info->bus_info, pci_name(pci_dev)); | |
1593 | } | |
1594 | ||
1595 | static int b44_nway_reset(struct net_device *dev) | |
1596 | { | |
1597 | struct b44 *bp = netdev_priv(dev); | |
1598 | u32 bmcr; | |
1599 | int r; | |
1600 | ||
1601 | spin_lock_irq(&bp->lock); | |
1602 | b44_readphy(bp, MII_BMCR, &bmcr); | |
1603 | b44_readphy(bp, MII_BMCR, &bmcr); | |
1604 | r = -EINVAL; | |
1605 | if (bmcr & BMCR_ANENABLE) { | |
1606 | b44_writephy(bp, MII_BMCR, | |
1607 | bmcr | BMCR_ANRESTART); | |
1608 | r = 0; | |
1609 | } | |
1610 | spin_unlock_irq(&bp->lock); | |
1611 | ||
1612 | return r; | |
1613 | } | |
1614 | ||
1615 | static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1616 | { | |
1617 | struct b44 *bp = netdev_priv(dev); | |
1618 | ||
b9dcbb40 | 1619 | if (!netif_running(dev)) |
1da177e4 LT |
1620 | return -EAGAIN; |
1621 | cmd->supported = (SUPPORTED_Autoneg); | |
1622 | cmd->supported |= (SUPPORTED_100baseT_Half | | |
1623 | SUPPORTED_100baseT_Full | | |
1624 | SUPPORTED_10baseT_Half | | |
1625 | SUPPORTED_10baseT_Full | | |
1626 | SUPPORTED_MII); | |
1627 | ||
1628 | cmd->advertising = 0; | |
1629 | if (bp->flags & B44_FLAG_ADV_10HALF) | |
adf6e000 | 1630 | cmd->advertising |= ADVERTISED_10baseT_Half; |
1da177e4 | 1631 | if (bp->flags & B44_FLAG_ADV_10FULL) |
adf6e000 | 1632 | cmd->advertising |= ADVERTISED_10baseT_Full; |
1da177e4 | 1633 | if (bp->flags & B44_FLAG_ADV_100HALF) |
adf6e000 | 1634 | cmd->advertising |= ADVERTISED_100baseT_Half; |
1da177e4 | 1635 | if (bp->flags & B44_FLAG_ADV_100FULL) |
adf6e000 MW |
1636 | cmd->advertising |= ADVERTISED_100baseT_Full; |
1637 | cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause; | |
1da177e4 LT |
1638 | cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ? |
1639 | SPEED_100 : SPEED_10; | |
1640 | cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ? | |
1641 | DUPLEX_FULL : DUPLEX_HALF; | |
1642 | cmd->port = 0; | |
1643 | cmd->phy_address = bp->phy_addr; | |
1644 | cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ? | |
1645 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
1646 | cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ? | |
1647 | AUTONEG_DISABLE : AUTONEG_ENABLE; | |
1648 | cmd->maxtxpkt = 0; | |
1649 | cmd->maxrxpkt = 0; | |
1650 | return 0; | |
1651 | } | |
1652 | ||
1653 | static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1654 | { | |
1655 | struct b44 *bp = netdev_priv(dev); | |
1656 | ||
b9dcbb40 | 1657 | if (!netif_running(dev)) |
1da177e4 LT |
1658 | return -EAGAIN; |
1659 | ||
1660 | /* We do not support gigabit. */ | |
1661 | if (cmd->autoneg == AUTONEG_ENABLE) { | |
1662 | if (cmd->advertising & | |
1663 | (ADVERTISED_1000baseT_Half | | |
1664 | ADVERTISED_1000baseT_Full)) | |
1665 | return -EINVAL; | |
1666 | } else if ((cmd->speed != SPEED_100 && | |
1667 | cmd->speed != SPEED_10) || | |
1668 | (cmd->duplex != DUPLEX_HALF && | |
1669 | cmd->duplex != DUPLEX_FULL)) { | |
1670 | return -EINVAL; | |
1671 | } | |
1672 | ||
1673 | spin_lock_irq(&bp->lock); | |
1674 | ||
1675 | if (cmd->autoneg == AUTONEG_ENABLE) { | |
1676 | bp->flags &= ~B44_FLAG_FORCE_LINK; | |
1677 | bp->flags &= ~(B44_FLAG_ADV_10HALF | | |
1678 | B44_FLAG_ADV_10FULL | | |
1679 | B44_FLAG_ADV_100HALF | | |
1680 | B44_FLAG_ADV_100FULL); | |
1681 | if (cmd->advertising & ADVERTISE_10HALF) | |
1682 | bp->flags |= B44_FLAG_ADV_10HALF; | |
1683 | if (cmd->advertising & ADVERTISE_10FULL) | |
1684 | bp->flags |= B44_FLAG_ADV_10FULL; | |
1685 | if (cmd->advertising & ADVERTISE_100HALF) | |
1686 | bp->flags |= B44_FLAG_ADV_100HALF; | |
1687 | if (cmd->advertising & ADVERTISE_100FULL) | |
1688 | bp->flags |= B44_FLAG_ADV_100FULL; | |
1689 | } else { | |
1690 | bp->flags |= B44_FLAG_FORCE_LINK; | |
1691 | if (cmd->speed == SPEED_100) | |
1692 | bp->flags |= B44_FLAG_100_BASE_T; | |
1693 | if (cmd->duplex == DUPLEX_FULL) | |
1694 | bp->flags |= B44_FLAG_FULL_DUPLEX; | |
1695 | } | |
1696 | ||
1697 | b44_setup_phy(bp); | |
1698 | ||
1699 | spin_unlock_irq(&bp->lock); | |
1700 | ||
1701 | return 0; | |
1702 | } | |
1703 | ||
1704 | static void b44_get_ringparam(struct net_device *dev, | |
1705 | struct ethtool_ringparam *ering) | |
1706 | { | |
1707 | struct b44 *bp = netdev_priv(dev); | |
1708 | ||
1709 | ering->rx_max_pending = B44_RX_RING_SIZE - 1; | |
1710 | ering->rx_pending = bp->rx_pending; | |
1711 | ||
1712 | /* XXX ethtool lacks a tx_max_pending, oops... */ | |
1713 | } | |
1714 | ||
1715 | static int b44_set_ringparam(struct net_device *dev, | |
1716 | struct ethtool_ringparam *ering) | |
1717 | { | |
1718 | struct b44 *bp = netdev_priv(dev); | |
1719 | ||
1720 | if ((ering->rx_pending > B44_RX_RING_SIZE - 1) || | |
1721 | (ering->rx_mini_pending != 0) || | |
1722 | (ering->rx_jumbo_pending != 0) || | |
1723 | (ering->tx_pending > B44_TX_RING_SIZE - 1)) | |
1724 | return -EINVAL; | |
1725 | ||
1726 | spin_lock_irq(&bp->lock); | |
1727 | ||
1728 | bp->rx_pending = ering->rx_pending; | |
1729 | bp->tx_pending = ering->tx_pending; | |
1730 | ||
1731 | b44_halt(bp); | |
1732 | b44_init_rings(bp); | |
1733 | b44_init_hw(bp); | |
1734 | netif_wake_queue(bp->dev); | |
1735 | spin_unlock_irq(&bp->lock); | |
1736 | ||
1737 | b44_enable_ints(bp); | |
1738 | ||
1739 | return 0; | |
1740 | } | |
1741 | ||
1742 | static void b44_get_pauseparam(struct net_device *dev, | |
1743 | struct ethtool_pauseparam *epause) | |
1744 | { | |
1745 | struct b44 *bp = netdev_priv(dev); | |
1746 | ||
1747 | epause->autoneg = | |
1748 | (bp->flags & B44_FLAG_PAUSE_AUTO) != 0; | |
1749 | epause->rx_pause = | |
1750 | (bp->flags & B44_FLAG_RX_PAUSE) != 0; | |
1751 | epause->tx_pause = | |
1752 | (bp->flags & B44_FLAG_TX_PAUSE) != 0; | |
1753 | } | |
1754 | ||
1755 | static int b44_set_pauseparam(struct net_device *dev, | |
1756 | struct ethtool_pauseparam *epause) | |
1757 | { | |
1758 | struct b44 *bp = netdev_priv(dev); | |
1759 | ||
1760 | spin_lock_irq(&bp->lock); | |
1761 | if (epause->autoneg) | |
1762 | bp->flags |= B44_FLAG_PAUSE_AUTO; | |
1763 | else | |
1764 | bp->flags &= ~B44_FLAG_PAUSE_AUTO; | |
1765 | if (epause->rx_pause) | |
1766 | bp->flags |= B44_FLAG_RX_PAUSE; | |
1767 | else | |
1768 | bp->flags &= ~B44_FLAG_RX_PAUSE; | |
1769 | if (epause->tx_pause) | |
1770 | bp->flags |= B44_FLAG_TX_PAUSE; | |
1771 | else | |
1772 | bp->flags &= ~B44_FLAG_TX_PAUSE; | |
1773 | if (bp->flags & B44_FLAG_PAUSE_AUTO) { | |
1774 | b44_halt(bp); | |
1775 | b44_init_rings(bp); | |
1776 | b44_init_hw(bp); | |
1777 | } else { | |
1778 | __b44_set_flow_ctrl(bp, bp->flags); | |
1779 | } | |
1780 | spin_unlock_irq(&bp->lock); | |
1781 | ||
1782 | b44_enable_ints(bp); | |
1783 | ||
1784 | return 0; | |
1785 | } | |
1786 | ||
3353930d FR |
1787 | static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
1788 | { | |
1789 | switch(stringset) { | |
1790 | case ETH_SS_STATS: | |
1791 | memcpy(data, *b44_gstrings, sizeof(b44_gstrings)); | |
1792 | break; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | static int b44_get_stats_count(struct net_device *dev) | |
1797 | { | |
1798 | return ARRAY_SIZE(b44_gstrings); | |
1799 | } | |
1800 | ||
1801 | static void b44_get_ethtool_stats(struct net_device *dev, | |
1802 | struct ethtool_stats *stats, u64 *data) | |
1803 | { | |
1804 | struct b44 *bp = netdev_priv(dev); | |
1805 | u32 *val = &bp->hw_stats.tx_good_octets; | |
1806 | u32 i; | |
1807 | ||
1808 | spin_lock_irq(&bp->lock); | |
1809 | ||
1810 | b44_stats_update(bp); | |
1811 | ||
1812 | for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++) | |
1813 | *data++ = *val++; | |
1814 | ||
1815 | spin_unlock_irq(&bp->lock); | |
1816 | } | |
1817 | ||
1da177e4 LT |
1818 | static struct ethtool_ops b44_ethtool_ops = { |
1819 | .get_drvinfo = b44_get_drvinfo, | |
1820 | .get_settings = b44_get_settings, | |
1821 | .set_settings = b44_set_settings, | |
1822 | .nway_reset = b44_nway_reset, | |
1823 | .get_link = ethtool_op_get_link, | |
1824 | .get_ringparam = b44_get_ringparam, | |
1825 | .set_ringparam = b44_set_ringparam, | |
1826 | .get_pauseparam = b44_get_pauseparam, | |
1827 | .set_pauseparam = b44_set_pauseparam, | |
1828 | .get_msglevel = b44_get_msglevel, | |
1829 | .set_msglevel = b44_set_msglevel, | |
3353930d FR |
1830 | .get_strings = b44_get_strings, |
1831 | .get_stats_count = b44_get_stats_count, | |
1832 | .get_ethtool_stats = b44_get_ethtool_stats, | |
2160de53 | 1833 | .get_perm_addr = ethtool_op_get_perm_addr, |
1da177e4 LT |
1834 | }; |
1835 | ||
1836 | static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
1837 | { | |
1838 | struct mii_ioctl_data *data = if_mii(ifr); | |
1839 | struct b44 *bp = netdev_priv(dev); | |
3410572d FR |
1840 | int err = -EINVAL; |
1841 | ||
1842 | if (!netif_running(dev)) | |
1843 | goto out; | |
1da177e4 LT |
1844 | |
1845 | spin_lock_irq(&bp->lock); | |
1846 | err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL); | |
1847 | spin_unlock_irq(&bp->lock); | |
3410572d | 1848 | out: |
1da177e4 LT |
1849 | return err; |
1850 | } | |
1851 | ||
1852 | /* Read 128-bytes of EEPROM. */ | |
1853 | static int b44_read_eeprom(struct b44 *bp, u8 *data) | |
1854 | { | |
1855 | long i; | |
1856 | u16 *ptr = (u16 *) data; | |
1857 | ||
1858 | for (i = 0; i < 128; i += 2) | |
1859 | ptr[i / 2] = readw(bp->regs + 4096 + i); | |
1860 | ||
1861 | return 0; | |
1862 | } | |
1863 | ||
1864 | static int __devinit b44_get_invariants(struct b44 *bp) | |
1865 | { | |
1866 | u8 eeprom[128]; | |
1867 | int err; | |
1868 | ||
1869 | err = b44_read_eeprom(bp, &eeprom[0]); | |
1870 | if (err) | |
1871 | goto out; | |
1872 | ||
1873 | bp->dev->dev_addr[0] = eeprom[79]; | |
1874 | bp->dev->dev_addr[1] = eeprom[78]; | |
1875 | bp->dev->dev_addr[2] = eeprom[81]; | |
1876 | bp->dev->dev_addr[3] = eeprom[80]; | |
1877 | bp->dev->dev_addr[4] = eeprom[83]; | |
1878 | bp->dev->dev_addr[5] = eeprom[82]; | |
2160de53 | 1879 | memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len); |
1da177e4 LT |
1880 | |
1881 | bp->phy_addr = eeprom[90] & 0x1f; | |
1882 | ||
1883 | /* With this, plus the rx_header prepended to the data by the | |
1884 | * hardware, we'll land the ethernet header on a 2-byte boundary. | |
1885 | */ | |
1886 | bp->rx_offset = 30; | |
1887 | ||
1888 | bp->imask = IMASK_DEF; | |
1889 | ||
1890 | bp->core_unit = ssb_core_unit(bp); | |
1891 | bp->dma_offset = SB_PCI_DMA; | |
1892 | ||
1893 | /* XXX - really required? | |
1894 | bp->flags |= B44_FLAG_BUGGY_TXPTR; | |
1895 | */ | |
1896 | out: | |
1897 | return err; | |
1898 | } | |
1899 | ||
1900 | static int __devinit b44_init_one(struct pci_dev *pdev, | |
1901 | const struct pci_device_id *ent) | |
1902 | { | |
1903 | static int b44_version_printed = 0; | |
1904 | unsigned long b44reg_base, b44reg_len; | |
1905 | struct net_device *dev; | |
1906 | struct b44 *bp; | |
1907 | int err, i; | |
1908 | ||
1909 | if (b44_version_printed++ == 0) | |
1910 | printk(KERN_INFO "%s", version); | |
1911 | ||
1912 | err = pci_enable_device(pdev); | |
1913 | if (err) { | |
1914 | printk(KERN_ERR PFX "Cannot enable PCI device, " | |
1915 | "aborting.\n"); | |
1916 | return err; | |
1917 | } | |
1918 | ||
1919 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
1920 | printk(KERN_ERR PFX "Cannot find proper PCI device " | |
1921 | "base address, aborting.\n"); | |
1922 | err = -ENODEV; | |
1923 | goto err_out_disable_pdev; | |
1924 | } | |
1925 | ||
1926 | err = pci_request_regions(pdev, DRV_MODULE_NAME); | |
1927 | if (err) { | |
1928 | printk(KERN_ERR PFX "Cannot obtain PCI resources, " | |
1929 | "aborting.\n"); | |
1930 | goto err_out_disable_pdev; | |
1931 | } | |
1932 | ||
1933 | pci_set_master(pdev); | |
1934 | ||
1935 | err = pci_set_dma_mask(pdev, (u64) B44_DMA_MASK); | |
1936 | if (err) { | |
1937 | printk(KERN_ERR PFX "No usable DMA configuration, " | |
1938 | "aborting.\n"); | |
1939 | goto err_out_free_res; | |
1940 | } | |
1941 | ||
1942 | err = pci_set_consistent_dma_mask(pdev, (u64) B44_DMA_MASK); | |
1943 | if (err) { | |
874a6214 FR |
1944 | printk(KERN_ERR PFX "No usable DMA configuration, " |
1945 | "aborting.\n"); | |
1946 | goto err_out_free_res; | |
1da177e4 LT |
1947 | } |
1948 | ||
1949 | b44reg_base = pci_resource_start(pdev, 0); | |
1950 | b44reg_len = pci_resource_len(pdev, 0); | |
1951 | ||
1952 | dev = alloc_etherdev(sizeof(*bp)); | |
1953 | if (!dev) { | |
1954 | printk(KERN_ERR PFX "Etherdev alloc failed, aborting.\n"); | |
1955 | err = -ENOMEM; | |
1956 | goto err_out_free_res; | |
1957 | } | |
1958 | ||
1959 | SET_MODULE_OWNER(dev); | |
1960 | SET_NETDEV_DEV(dev,&pdev->dev); | |
1961 | ||
1962 | /* No interesting netdevice features in this card... */ | |
1963 | dev->features |= 0; | |
1964 | ||
1965 | bp = netdev_priv(dev); | |
1966 | bp->pdev = pdev; | |
1967 | bp->dev = dev; | |
874a6214 FR |
1968 | |
1969 | bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE); | |
1da177e4 LT |
1970 | |
1971 | spin_lock_init(&bp->lock); | |
1972 | ||
1973 | bp->regs = ioremap(b44reg_base, b44reg_len); | |
1974 | if (bp->regs == 0UL) { | |
1975 | printk(KERN_ERR PFX "Cannot map device registers, " | |
1976 | "aborting.\n"); | |
1977 | err = -ENOMEM; | |
1978 | goto err_out_free_dev; | |
1979 | } | |
1980 | ||
1981 | bp->rx_pending = B44_DEF_RX_RING_PENDING; | |
1982 | bp->tx_pending = B44_DEF_TX_RING_PENDING; | |
1983 | ||
1984 | dev->open = b44_open; | |
1985 | dev->stop = b44_close; | |
1986 | dev->hard_start_xmit = b44_start_xmit; | |
1987 | dev->get_stats = b44_get_stats; | |
1988 | dev->set_multicast_list = b44_set_rx_mode; | |
1989 | dev->set_mac_address = b44_set_mac_addr; | |
1990 | dev->do_ioctl = b44_ioctl; | |
1991 | dev->tx_timeout = b44_tx_timeout; | |
1992 | dev->poll = b44_poll; | |
1993 | dev->weight = 64; | |
1994 | dev->watchdog_timeo = B44_TX_TIMEOUT; | |
1995 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1996 | dev->poll_controller = b44_poll_controller; | |
1997 | #endif | |
1998 | dev->change_mtu = b44_change_mtu; | |
1999 | dev->irq = pdev->irq; | |
2000 | SET_ETHTOOL_OPS(dev, &b44_ethtool_ops); | |
2001 | ||
c35ca399 SH |
2002 | netif_carrier_off(dev); |
2003 | ||
1da177e4 LT |
2004 | err = b44_get_invariants(bp); |
2005 | if (err) { | |
2006 | printk(KERN_ERR PFX "Problem fetching invariants of chip, " | |
2007 | "aborting.\n"); | |
2008 | goto err_out_iounmap; | |
2009 | } | |
2010 | ||
2011 | bp->mii_if.dev = dev; | |
2012 | bp->mii_if.mdio_read = b44_mii_read; | |
2013 | bp->mii_if.mdio_write = b44_mii_write; | |
2014 | bp->mii_if.phy_id = bp->phy_addr; | |
2015 | bp->mii_if.phy_id_mask = 0x1f; | |
2016 | bp->mii_if.reg_num_mask = 0x1f; | |
2017 | ||
2018 | /* By default, advertise all speed/duplex settings. */ | |
2019 | bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL | | |
2020 | B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL); | |
2021 | ||
2022 | /* By default, auto-negotiate PAUSE. */ | |
2023 | bp->flags |= B44_FLAG_PAUSE_AUTO; | |
2024 | ||
2025 | err = register_netdev(dev); | |
2026 | if (err) { | |
2027 | printk(KERN_ERR PFX "Cannot register net device, " | |
2028 | "aborting.\n"); | |
2029 | goto err_out_iounmap; | |
2030 | } | |
2031 | ||
2032 | pci_set_drvdata(pdev, dev); | |
2033 | ||
2034 | pci_save_state(bp->pdev); | |
2035 | ||
5c513129 GZ |
2036 | /* Chip reset provides power to the b44 MAC & PCI cores, which |
2037 | * is necessary for MAC register access. | |
2038 | */ | |
2039 | b44_chip_reset(bp); | |
2040 | ||
1da177e4 LT |
2041 | printk(KERN_INFO "%s: Broadcom 4400 10/100BaseT Ethernet ", dev->name); |
2042 | for (i = 0; i < 6; i++) | |
2043 | printk("%2.2x%c", dev->dev_addr[i], | |
2044 | i == 5 ? '\n' : ':'); | |
2045 | ||
2046 | return 0; | |
2047 | ||
2048 | err_out_iounmap: | |
2049 | iounmap(bp->regs); | |
2050 | ||
2051 | err_out_free_dev: | |
2052 | free_netdev(dev); | |
2053 | ||
2054 | err_out_free_res: | |
2055 | pci_release_regions(pdev); | |
2056 | ||
2057 | err_out_disable_pdev: | |
2058 | pci_disable_device(pdev); | |
2059 | pci_set_drvdata(pdev, NULL); | |
2060 | return err; | |
2061 | } | |
2062 | ||
2063 | static void __devexit b44_remove_one(struct pci_dev *pdev) | |
2064 | { | |
2065 | struct net_device *dev = pci_get_drvdata(pdev); | |
874a6214 | 2066 | struct b44 *bp = netdev_priv(dev); |
1da177e4 | 2067 | |
874a6214 FR |
2068 | unregister_netdev(dev); |
2069 | iounmap(bp->regs); | |
2070 | free_netdev(dev); | |
2071 | pci_release_regions(pdev); | |
2072 | pci_disable_device(pdev); | |
2073 | pci_set_drvdata(pdev, NULL); | |
1da177e4 LT |
2074 | } |
2075 | ||
2076 | static int b44_suspend(struct pci_dev *pdev, pm_message_t state) | |
2077 | { | |
2078 | struct net_device *dev = pci_get_drvdata(pdev); | |
2079 | struct b44 *bp = netdev_priv(dev); | |
2080 | ||
2081 | if (!netif_running(dev)) | |
2082 | return 0; | |
2083 | ||
2084 | del_timer_sync(&bp->timer); | |
2085 | ||
2086 | spin_lock_irq(&bp->lock); | |
2087 | ||
2088 | b44_halt(bp); | |
2089 | netif_carrier_off(bp->dev); | |
2090 | netif_device_detach(bp->dev); | |
2091 | b44_free_rings(bp); | |
2092 | ||
2093 | spin_unlock_irq(&bp->lock); | |
46e17853 PM |
2094 | |
2095 | free_irq(dev->irq, dev); | |
d58da590 | 2096 | pci_disable_device(pdev); |
1da177e4 LT |
2097 | return 0; |
2098 | } | |
2099 | ||
2100 | static int b44_resume(struct pci_dev *pdev) | |
2101 | { | |
2102 | struct net_device *dev = pci_get_drvdata(pdev); | |
2103 | struct b44 *bp = netdev_priv(dev); | |
2104 | ||
2105 | pci_restore_state(pdev); | |
d58da590 DSL |
2106 | pci_enable_device(pdev); |
2107 | pci_set_master(pdev); | |
1da177e4 LT |
2108 | |
2109 | if (!netif_running(dev)) | |
2110 | return 0; | |
2111 | ||
46e17853 PM |
2112 | if (request_irq(dev->irq, b44_interrupt, SA_SHIRQ, dev->name, dev)) |
2113 | printk(KERN_ERR PFX "%s: request_irq failed\n", dev->name); | |
2114 | ||
1da177e4 LT |
2115 | spin_lock_irq(&bp->lock); |
2116 | ||
2117 | b44_init_rings(bp); | |
2118 | b44_init_hw(bp); | |
2119 | netif_device_attach(bp->dev); | |
2120 | spin_unlock_irq(&bp->lock); | |
2121 | ||
2122 | bp->timer.expires = jiffies + HZ; | |
2123 | add_timer(&bp->timer); | |
2124 | ||
2125 | b44_enable_ints(bp); | |
d9e2d185 | 2126 | netif_wake_queue(dev); |
1da177e4 LT |
2127 | return 0; |
2128 | } | |
2129 | ||
2130 | static struct pci_driver b44_driver = { | |
2131 | .name = DRV_MODULE_NAME, | |
2132 | .id_table = b44_pci_tbl, | |
2133 | .probe = b44_init_one, | |
2134 | .remove = __devexit_p(b44_remove_one), | |
2135 | .suspend = b44_suspend, | |
2136 | .resume = b44_resume, | |
2137 | }; | |
2138 | ||
2139 | static int __init b44_init(void) | |
2140 | { | |
9f38c636 JL |
2141 | unsigned int dma_desc_align_size = dma_get_cache_alignment(); |
2142 | ||
2143 | /* Setup paramaters for syncing RX/TX DMA descriptors */ | |
2144 | dma_desc_align_mask = ~(dma_desc_align_size - 1); | |
22d4d771 | 2145 | dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc)); |
9f38c636 | 2146 | |
1da177e4 LT |
2147 | return pci_module_init(&b44_driver); |
2148 | } | |
2149 | ||
2150 | static void __exit b44_cleanup(void) | |
2151 | { | |
2152 | pci_unregister_driver(&b44_driver); | |
2153 | } | |
2154 | ||
2155 | module_init(b44_init); | |
2156 | module_exit(b44_cleanup); | |
2157 |