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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) | |
8056bfaf | 5 | * Copyright (C) 2006 Broadcom Corporation. |
1da177e4 LT |
6 | * |
7 | * Distribute under GPL. | |
8 | */ | |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/moduleparam.h> | |
13 | #include <linux/types.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/ethtool.h> | |
16 | #include <linux/mii.h> | |
17 | #include <linux/if_ether.h> | |
72f4861e | 18 | #include <linux/if_vlan.h> |
1da177e4 LT |
19 | #include <linux/etherdevice.h> |
20 | #include <linux/pci.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/init.h> | |
89358f90 | 23 | #include <linux/dma-mapping.h> |
1da177e4 LT |
24 | |
25 | #include <asm/uaccess.h> | |
26 | #include <asm/io.h> | |
27 | #include <asm/irq.h> | |
28 | ||
29 | #include "b44.h" | |
30 | ||
31 | #define DRV_MODULE_NAME "b44" | |
32 | #define PFX DRV_MODULE_NAME ": " | |
4d1dabdb GZ |
33 | #define DRV_MODULE_VERSION "1.01" |
34 | #define DRV_MODULE_RELDATE "Jun 16, 2006" | |
1da177e4 LT |
35 | |
36 | #define B44_DEF_MSG_ENABLE \ | |
37 | (NETIF_MSG_DRV | \ | |
38 | NETIF_MSG_PROBE | \ | |
39 | NETIF_MSG_LINK | \ | |
40 | NETIF_MSG_TIMER | \ | |
41 | NETIF_MSG_IFDOWN | \ | |
42 | NETIF_MSG_IFUP | \ | |
43 | NETIF_MSG_RX_ERR | \ | |
44 | NETIF_MSG_TX_ERR) | |
45 | ||
46 | /* length of time before we decide the hardware is borked, | |
47 | * and dev->tx_timeout() should be called to fix the problem | |
48 | */ | |
49 | #define B44_TX_TIMEOUT (5 * HZ) | |
50 | ||
51 | /* hardware minimum and maximum for a single frame's data payload */ | |
52 | #define B44_MIN_MTU 60 | |
53 | #define B44_MAX_MTU 1500 | |
54 | ||
55 | #define B44_RX_RING_SIZE 512 | |
56 | #define B44_DEF_RX_RING_PENDING 200 | |
57 | #define B44_RX_RING_BYTES (sizeof(struct dma_desc) * \ | |
58 | B44_RX_RING_SIZE) | |
59 | #define B44_TX_RING_SIZE 512 | |
60 | #define B44_DEF_TX_RING_PENDING (B44_TX_RING_SIZE - 1) | |
61 | #define B44_TX_RING_BYTES (sizeof(struct dma_desc) * \ | |
62 | B44_TX_RING_SIZE) | |
1da177e4 LT |
63 | |
64 | #define TX_RING_GAP(BP) \ | |
65 | (B44_TX_RING_SIZE - (BP)->tx_pending) | |
66 | #define TX_BUFFS_AVAIL(BP) \ | |
67 | (((BP)->tx_cons <= (BP)->tx_prod) ? \ | |
68 | (BP)->tx_cons + (BP)->tx_pending - (BP)->tx_prod : \ | |
69 | (BP)->tx_cons - (BP)->tx_prod - TX_RING_GAP(BP)) | |
70 | #define NEXT_TX(N) (((N) + 1) & (B44_TX_RING_SIZE - 1)) | |
71 | ||
72f4861e SH |
72 | #define RX_PKT_OFFSET 30 |
73 | #define RX_PKT_BUF_SZ (1536 + RX_PKT_OFFSET + 64) | |
1da177e4 LT |
74 | |
75 | /* minimum number of free TX descriptors required to wake up TX process */ | |
76 | #define B44_TX_WAKEUP_THRESH (B44_TX_RING_SIZE / 4) | |
77 | ||
725ad800 GZ |
78 | /* b44 internal pattern match filter info */ |
79 | #define B44_PATTERN_BASE 0x400 | |
80 | #define B44_PATTERN_SIZE 0x80 | |
81 | #define B44_PMASK_BASE 0x600 | |
82 | #define B44_PMASK_SIZE 0x10 | |
83 | #define B44_MAX_PATTERNS 16 | |
84 | #define B44_ETHIPV6UDP_HLEN 62 | |
85 | #define B44_ETHIPV4UDP_HLEN 42 | |
86 | ||
1da177e4 LT |
87 | static char version[] __devinitdata = |
88 | DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; | |
89 | ||
90 | MODULE_AUTHOR("Florian Schirmer, Pekka Pietikainen, David S. Miller"); | |
91 | MODULE_DESCRIPTION("Broadcom 4400 10/100 PCI ethernet driver"); | |
92 | MODULE_LICENSE("GPL"); | |
93 | MODULE_VERSION(DRV_MODULE_VERSION); | |
94 | ||
95 | static int b44_debug = -1; /* -1 == use B44_DEF_MSG_ENABLE as value */ | |
96 | module_param(b44_debug, int, 0); | |
97 | MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value"); | |
98 | ||
99 | static struct pci_device_id b44_pci_tbl[] = { | |
100 | { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401, | |
101 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
102 | { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B0, | |
103 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
104 | { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1, | |
105 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, | |
106 | { } /* terminate list with empty entry */ | |
107 | }; | |
108 | ||
109 | MODULE_DEVICE_TABLE(pci, b44_pci_tbl); | |
110 | ||
111 | static void b44_halt(struct b44 *); | |
112 | static void b44_init_rings(struct b44 *); | |
5fc7d61a MC |
113 | |
114 | #define B44_FULL_RESET 1 | |
115 | #define B44_FULL_RESET_SKIP_PHY 2 | |
116 | #define B44_PARTIAL_RESET 3 | |
117 | ||
00e8b3aa | 118 | static void b44_init_hw(struct b44 *, int); |
1da177e4 | 119 | |
9f38c636 JL |
120 | static int dma_desc_align_mask; |
121 | static int dma_desc_sync_size; | |
122 | ||
3353930d FR |
123 | static const char b44_gstrings[][ETH_GSTRING_LEN] = { |
124 | #define _B44(x...) # x, | |
125 | B44_STAT_REG_DECLARE | |
126 | #undef _B44 | |
127 | }; | |
128 | ||
9f38c636 JL |
129 | static inline void b44_sync_dma_desc_for_device(struct pci_dev *pdev, |
130 | dma_addr_t dma_base, | |
131 | unsigned long offset, | |
132 | enum dma_data_direction dir) | |
133 | { | |
134 | dma_sync_single_range_for_device(&pdev->dev, dma_base, | |
135 | offset & dma_desc_align_mask, | |
136 | dma_desc_sync_size, dir); | |
137 | } | |
138 | ||
139 | static inline void b44_sync_dma_desc_for_cpu(struct pci_dev *pdev, | |
140 | dma_addr_t dma_base, | |
141 | unsigned long offset, | |
142 | enum dma_data_direction dir) | |
143 | { | |
144 | dma_sync_single_range_for_cpu(&pdev->dev, dma_base, | |
145 | offset & dma_desc_align_mask, | |
146 | dma_desc_sync_size, dir); | |
147 | } | |
148 | ||
1da177e4 LT |
149 | static inline unsigned long br32(const struct b44 *bp, unsigned long reg) |
150 | { | |
151 | return readl(bp->regs + reg); | |
152 | } | |
153 | ||
10badc21 | 154 | static inline void bw32(const struct b44 *bp, |
1da177e4 LT |
155 | unsigned long reg, unsigned long val) |
156 | { | |
157 | writel(val, bp->regs + reg); | |
158 | } | |
159 | ||
160 | static int b44_wait_bit(struct b44 *bp, unsigned long reg, | |
161 | u32 bit, unsigned long timeout, const int clear) | |
162 | { | |
163 | unsigned long i; | |
164 | ||
165 | for (i = 0; i < timeout; i++) { | |
166 | u32 val = br32(bp, reg); | |
167 | ||
168 | if (clear && !(val & bit)) | |
169 | break; | |
170 | if (!clear && (val & bit)) | |
171 | break; | |
172 | udelay(10); | |
173 | } | |
174 | if (i == timeout) { | |
175 | printk(KERN_ERR PFX "%s: BUG! Timeout waiting for bit %08x of register " | |
176 | "%lx to %s.\n", | |
177 | bp->dev->name, | |
178 | bit, reg, | |
179 | (clear ? "clear" : "set")); | |
180 | return -ENODEV; | |
181 | } | |
182 | return 0; | |
183 | } | |
184 | ||
185 | /* Sonics SiliconBackplane support routines. ROFL, you should see all the | |
186 | * buzz words used on this company's website :-) | |
187 | * | |
188 | * All of these routines must be invoked with bp->lock held and | |
189 | * interrupts disabled. | |
190 | */ | |
191 | ||
192 | #define SB_PCI_DMA 0x40000000 /* Client Mode PCI memory access space (1 GB) */ | |
193 | #define BCM4400_PCI_CORE_ADDR 0x18002000 /* Address of PCI core on BCM4400 cards */ | |
194 | ||
195 | static u32 ssb_get_core_rev(struct b44 *bp) | |
196 | { | |
197 | return (br32(bp, B44_SBIDHIGH) & SBIDHIGH_RC_MASK); | |
198 | } | |
199 | ||
200 | static u32 ssb_pci_setup(struct b44 *bp, u32 cores) | |
201 | { | |
202 | u32 bar_orig, pci_rev, val; | |
203 | ||
204 | pci_read_config_dword(bp->pdev, SSB_BAR0_WIN, &bar_orig); | |
205 | pci_write_config_dword(bp->pdev, SSB_BAR0_WIN, BCM4400_PCI_CORE_ADDR); | |
206 | pci_rev = ssb_get_core_rev(bp); | |
207 | ||
208 | val = br32(bp, B44_SBINTVEC); | |
209 | val |= cores; | |
210 | bw32(bp, B44_SBINTVEC, val); | |
211 | ||
212 | val = br32(bp, SSB_PCI_TRANS_2); | |
213 | val |= SSB_PCI_PREF | SSB_PCI_BURST; | |
214 | bw32(bp, SSB_PCI_TRANS_2, val); | |
215 | ||
216 | pci_write_config_dword(bp->pdev, SSB_BAR0_WIN, bar_orig); | |
217 | ||
218 | return pci_rev; | |
219 | } | |
220 | ||
221 | static void ssb_core_disable(struct b44 *bp) | |
222 | { | |
223 | if (br32(bp, B44_SBTMSLOW) & SBTMSLOW_RESET) | |
224 | return; | |
225 | ||
226 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_REJECT | SBTMSLOW_CLOCK)); | |
227 | b44_wait_bit(bp, B44_SBTMSLOW, SBTMSLOW_REJECT, 100000, 0); | |
228 | b44_wait_bit(bp, B44_SBTMSHIGH, SBTMSHIGH_BUSY, 100000, 1); | |
229 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_FGC | SBTMSLOW_CLOCK | | |
230 | SBTMSLOW_REJECT | SBTMSLOW_RESET)); | |
231 | br32(bp, B44_SBTMSLOW); | |
232 | udelay(1); | |
233 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_REJECT | SBTMSLOW_RESET)); | |
234 | br32(bp, B44_SBTMSLOW); | |
235 | udelay(1); | |
236 | } | |
237 | ||
238 | static void ssb_core_reset(struct b44 *bp) | |
239 | { | |
240 | u32 val; | |
241 | ||
242 | ssb_core_disable(bp); | |
243 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_RESET | SBTMSLOW_CLOCK | SBTMSLOW_FGC)); | |
244 | br32(bp, B44_SBTMSLOW); | |
245 | udelay(1); | |
246 | ||
247 | /* Clear SERR if set, this is a hw bug workaround. */ | |
248 | if (br32(bp, B44_SBTMSHIGH) & SBTMSHIGH_SERR) | |
249 | bw32(bp, B44_SBTMSHIGH, 0); | |
250 | ||
251 | val = br32(bp, B44_SBIMSTATE); | |
252 | if (val & (SBIMSTATE_IBE | SBIMSTATE_TO)) | |
253 | bw32(bp, B44_SBIMSTATE, val & ~(SBIMSTATE_IBE | SBIMSTATE_TO)); | |
254 | ||
255 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_CLOCK | SBTMSLOW_FGC)); | |
256 | br32(bp, B44_SBTMSLOW); | |
257 | udelay(1); | |
258 | ||
259 | bw32(bp, B44_SBTMSLOW, (SBTMSLOW_CLOCK)); | |
260 | br32(bp, B44_SBTMSLOW); | |
261 | udelay(1); | |
262 | } | |
263 | ||
264 | static int ssb_core_unit(struct b44 *bp) | |
265 | { | |
266 | #if 0 | |
267 | u32 val = br32(bp, B44_SBADMATCH0); | |
268 | u32 base; | |
269 | ||
270 | type = val & SBADMATCH0_TYPE_MASK; | |
271 | switch (type) { | |
272 | case 0: | |
273 | base = val & SBADMATCH0_BS0_MASK; | |
274 | break; | |
275 | ||
276 | case 1: | |
277 | base = val & SBADMATCH0_BS1_MASK; | |
278 | break; | |
279 | ||
280 | case 2: | |
281 | default: | |
282 | base = val & SBADMATCH0_BS2_MASK; | |
283 | break; | |
284 | }; | |
285 | #endif | |
286 | return 0; | |
287 | } | |
288 | ||
289 | static int ssb_is_core_up(struct b44 *bp) | |
290 | { | |
291 | return ((br32(bp, B44_SBTMSLOW) & (SBTMSLOW_RESET | SBTMSLOW_REJECT | SBTMSLOW_CLOCK)) | |
292 | == SBTMSLOW_CLOCK); | |
293 | } | |
294 | ||
295 | static void __b44_cam_write(struct b44 *bp, unsigned char *data, int index) | |
296 | { | |
297 | u32 val; | |
298 | ||
299 | val = ((u32) data[2]) << 24; | |
300 | val |= ((u32) data[3]) << 16; | |
301 | val |= ((u32) data[4]) << 8; | |
302 | val |= ((u32) data[5]) << 0; | |
303 | bw32(bp, B44_CAM_DATA_LO, val); | |
10badc21 | 304 | val = (CAM_DATA_HI_VALID | |
1da177e4 LT |
305 | (((u32) data[0]) << 8) | |
306 | (((u32) data[1]) << 0)); | |
307 | bw32(bp, B44_CAM_DATA_HI, val); | |
308 | bw32(bp, B44_CAM_CTRL, (CAM_CTRL_WRITE | | |
309 | (index << CAM_CTRL_INDEX_SHIFT))); | |
10badc21 | 310 | b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1); |
1da177e4 LT |
311 | } |
312 | ||
313 | static inline void __b44_disable_ints(struct b44 *bp) | |
314 | { | |
315 | bw32(bp, B44_IMASK, 0); | |
316 | } | |
317 | ||
318 | static void b44_disable_ints(struct b44 *bp) | |
319 | { | |
320 | __b44_disable_ints(bp); | |
321 | ||
322 | /* Flush posted writes. */ | |
323 | br32(bp, B44_IMASK); | |
324 | } | |
325 | ||
326 | static void b44_enable_ints(struct b44 *bp) | |
327 | { | |
328 | bw32(bp, B44_IMASK, bp->imask); | |
329 | } | |
330 | ||
331 | static int b44_readphy(struct b44 *bp, int reg, u32 *val) | |
332 | { | |
333 | int err; | |
334 | ||
335 | bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); | |
336 | bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | | |
337 | (MDIO_OP_READ << MDIO_DATA_OP_SHIFT) | | |
338 | (bp->phy_addr << MDIO_DATA_PMD_SHIFT) | | |
339 | (reg << MDIO_DATA_RA_SHIFT) | | |
340 | (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT))); | |
341 | err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); | |
342 | *val = br32(bp, B44_MDIO_DATA) & MDIO_DATA_DATA; | |
343 | ||
344 | return err; | |
345 | } | |
346 | ||
347 | static int b44_writephy(struct b44 *bp, int reg, u32 val) | |
348 | { | |
349 | bw32(bp, B44_EMAC_ISTAT, EMAC_INT_MII); | |
350 | bw32(bp, B44_MDIO_DATA, (MDIO_DATA_SB_START | | |
351 | (MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) | | |
352 | (bp->phy_addr << MDIO_DATA_PMD_SHIFT) | | |
353 | (reg << MDIO_DATA_RA_SHIFT) | | |
354 | (MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) | | |
355 | (val & MDIO_DATA_DATA))); | |
356 | return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0); | |
357 | } | |
358 | ||
359 | /* miilib interface */ | |
360 | /* FIXME FIXME: phy_id is ignored, bp->phy_addr use is unconditional | |
361 | * due to code existing before miilib use was added to this driver. | |
362 | * Someone should remove this artificial driver limitation in | |
363 | * b44_{read,write}phy. bp->phy_addr itself is fine (and needed). | |
364 | */ | |
365 | static int b44_mii_read(struct net_device *dev, int phy_id, int location) | |
366 | { | |
367 | u32 val; | |
368 | struct b44 *bp = netdev_priv(dev); | |
369 | int rc = b44_readphy(bp, location, &val); | |
370 | if (rc) | |
371 | return 0xffffffff; | |
372 | return val; | |
373 | } | |
374 | ||
375 | static void b44_mii_write(struct net_device *dev, int phy_id, int location, | |
376 | int val) | |
377 | { | |
378 | struct b44 *bp = netdev_priv(dev); | |
379 | b44_writephy(bp, location, val); | |
380 | } | |
381 | ||
382 | static int b44_phy_reset(struct b44 *bp) | |
383 | { | |
384 | u32 val; | |
385 | int err; | |
386 | ||
387 | err = b44_writephy(bp, MII_BMCR, BMCR_RESET); | |
388 | if (err) | |
389 | return err; | |
390 | udelay(100); | |
391 | err = b44_readphy(bp, MII_BMCR, &val); | |
392 | if (!err) { | |
393 | if (val & BMCR_RESET) { | |
394 | printk(KERN_ERR PFX "%s: PHY Reset would not complete.\n", | |
395 | bp->dev->name); | |
396 | err = -ENODEV; | |
397 | } | |
398 | } | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | static void __b44_set_flow_ctrl(struct b44 *bp, u32 pause_flags) | |
404 | { | |
405 | u32 val; | |
406 | ||
407 | bp->flags &= ~(B44_FLAG_TX_PAUSE | B44_FLAG_RX_PAUSE); | |
408 | bp->flags |= pause_flags; | |
409 | ||
410 | val = br32(bp, B44_RXCONFIG); | |
411 | if (pause_flags & B44_FLAG_RX_PAUSE) | |
412 | val |= RXCONFIG_FLOW; | |
413 | else | |
414 | val &= ~RXCONFIG_FLOW; | |
415 | bw32(bp, B44_RXCONFIG, val); | |
416 | ||
417 | val = br32(bp, B44_MAC_FLOW); | |
418 | if (pause_flags & B44_FLAG_TX_PAUSE) | |
419 | val |= (MAC_FLOW_PAUSE_ENAB | | |
420 | (0xc0 & MAC_FLOW_RX_HI_WATER)); | |
421 | else | |
422 | val &= ~MAC_FLOW_PAUSE_ENAB; | |
423 | bw32(bp, B44_MAC_FLOW, val); | |
424 | } | |
425 | ||
426 | static void b44_set_flow_ctrl(struct b44 *bp, u32 local, u32 remote) | |
427 | { | |
10badc21 | 428 | u32 pause_enab = 0; |
2b474cf5 GZ |
429 | |
430 | /* The driver supports only rx pause by default because | |
10badc21 JG |
431 | the b44 mac tx pause mechanism generates excessive |
432 | pause frames. | |
2b474cf5 GZ |
433 | Use ethtool to turn on b44 tx pause if necessary. |
434 | */ | |
435 | if ((local & ADVERTISE_PAUSE_CAP) && | |
10badc21 | 436 | (local & ADVERTISE_PAUSE_ASYM)){ |
2b474cf5 GZ |
437 | if ((remote & LPA_PAUSE_ASYM) && |
438 | !(remote & LPA_PAUSE_CAP)) | |
439 | pause_enab |= B44_FLAG_RX_PAUSE; | |
1da177e4 LT |
440 | } |
441 | ||
442 | __b44_set_flow_ctrl(bp, pause_enab); | |
443 | } | |
444 | ||
445 | static int b44_setup_phy(struct b44 *bp) | |
446 | { | |
447 | u32 val; | |
448 | int err; | |
449 | ||
450 | if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0) | |
451 | goto out; | |
452 | if ((err = b44_writephy(bp, B44_MII_ALEDCTRL, | |
453 | val & MII_ALEDCTRL_ALLMSK)) != 0) | |
454 | goto out; | |
455 | if ((err = b44_readphy(bp, B44_MII_TLEDCTRL, &val)) != 0) | |
456 | goto out; | |
457 | if ((err = b44_writephy(bp, B44_MII_TLEDCTRL, | |
458 | val | MII_TLEDCTRL_ENABLE)) != 0) | |
459 | goto out; | |
460 | ||
461 | if (!(bp->flags & B44_FLAG_FORCE_LINK)) { | |
462 | u32 adv = ADVERTISE_CSMA; | |
463 | ||
464 | if (bp->flags & B44_FLAG_ADV_10HALF) | |
465 | adv |= ADVERTISE_10HALF; | |
466 | if (bp->flags & B44_FLAG_ADV_10FULL) | |
467 | adv |= ADVERTISE_10FULL; | |
468 | if (bp->flags & B44_FLAG_ADV_100HALF) | |
469 | adv |= ADVERTISE_100HALF; | |
470 | if (bp->flags & B44_FLAG_ADV_100FULL) | |
471 | adv |= ADVERTISE_100FULL; | |
472 | ||
473 | if (bp->flags & B44_FLAG_PAUSE_AUTO) | |
474 | adv |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; | |
475 | ||
476 | if ((err = b44_writephy(bp, MII_ADVERTISE, adv)) != 0) | |
477 | goto out; | |
478 | if ((err = b44_writephy(bp, MII_BMCR, (BMCR_ANENABLE | | |
479 | BMCR_ANRESTART))) != 0) | |
480 | goto out; | |
481 | } else { | |
482 | u32 bmcr; | |
483 | ||
484 | if ((err = b44_readphy(bp, MII_BMCR, &bmcr)) != 0) | |
485 | goto out; | |
486 | bmcr &= ~(BMCR_FULLDPLX | BMCR_ANENABLE | BMCR_SPEED100); | |
487 | if (bp->flags & B44_FLAG_100_BASE_T) | |
488 | bmcr |= BMCR_SPEED100; | |
489 | if (bp->flags & B44_FLAG_FULL_DUPLEX) | |
490 | bmcr |= BMCR_FULLDPLX; | |
491 | if ((err = b44_writephy(bp, MII_BMCR, bmcr)) != 0) | |
492 | goto out; | |
493 | ||
494 | /* Since we will not be negotiating there is no safe way | |
495 | * to determine if the link partner supports flow control | |
496 | * or not. So just disable it completely in this case. | |
497 | */ | |
498 | b44_set_flow_ctrl(bp, 0, 0); | |
499 | } | |
500 | ||
501 | out: | |
502 | return err; | |
503 | } | |
504 | ||
505 | static void b44_stats_update(struct b44 *bp) | |
506 | { | |
507 | unsigned long reg; | |
508 | u32 *val; | |
509 | ||
510 | val = &bp->hw_stats.tx_good_octets; | |
511 | for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) { | |
512 | *val++ += br32(bp, reg); | |
513 | } | |
3353930d FR |
514 | |
515 | /* Pad */ | |
516 | reg += 8*4UL; | |
517 | ||
1da177e4 LT |
518 | for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) { |
519 | *val++ += br32(bp, reg); | |
520 | } | |
521 | } | |
522 | ||
523 | static void b44_link_report(struct b44 *bp) | |
524 | { | |
525 | if (!netif_carrier_ok(bp->dev)) { | |
526 | printk(KERN_INFO PFX "%s: Link is down.\n", bp->dev->name); | |
527 | } else { | |
528 | printk(KERN_INFO PFX "%s: Link is up at %d Mbps, %s duplex.\n", | |
529 | bp->dev->name, | |
530 | (bp->flags & B44_FLAG_100_BASE_T) ? 100 : 10, | |
531 | (bp->flags & B44_FLAG_FULL_DUPLEX) ? "full" : "half"); | |
532 | ||
533 | printk(KERN_INFO PFX "%s: Flow control is %s for TX and " | |
534 | "%s for RX.\n", | |
535 | bp->dev->name, | |
536 | (bp->flags & B44_FLAG_TX_PAUSE) ? "on" : "off", | |
537 | (bp->flags & B44_FLAG_RX_PAUSE) ? "on" : "off"); | |
538 | } | |
539 | } | |
540 | ||
541 | static void b44_check_phy(struct b44 *bp) | |
542 | { | |
543 | u32 bmsr, aux; | |
544 | ||
545 | if (!b44_readphy(bp, MII_BMSR, &bmsr) && | |
546 | !b44_readphy(bp, B44_MII_AUXCTRL, &aux) && | |
547 | (bmsr != 0xffff)) { | |
548 | if (aux & MII_AUXCTRL_SPEED) | |
549 | bp->flags |= B44_FLAG_100_BASE_T; | |
550 | else | |
551 | bp->flags &= ~B44_FLAG_100_BASE_T; | |
552 | if (aux & MII_AUXCTRL_DUPLEX) | |
553 | bp->flags |= B44_FLAG_FULL_DUPLEX; | |
554 | else | |
555 | bp->flags &= ~B44_FLAG_FULL_DUPLEX; | |
556 | ||
557 | if (!netif_carrier_ok(bp->dev) && | |
558 | (bmsr & BMSR_LSTATUS)) { | |
559 | u32 val = br32(bp, B44_TX_CTRL); | |
560 | u32 local_adv, remote_adv; | |
561 | ||
562 | if (bp->flags & B44_FLAG_FULL_DUPLEX) | |
563 | val |= TX_CTRL_DUPLEX; | |
564 | else | |
565 | val &= ~TX_CTRL_DUPLEX; | |
566 | bw32(bp, B44_TX_CTRL, val); | |
567 | ||
568 | if (!(bp->flags & B44_FLAG_FORCE_LINK) && | |
569 | !b44_readphy(bp, MII_ADVERTISE, &local_adv) && | |
570 | !b44_readphy(bp, MII_LPA, &remote_adv)) | |
571 | b44_set_flow_ctrl(bp, local_adv, remote_adv); | |
572 | ||
573 | /* Link now up */ | |
574 | netif_carrier_on(bp->dev); | |
575 | b44_link_report(bp); | |
576 | } else if (netif_carrier_ok(bp->dev) && !(bmsr & BMSR_LSTATUS)) { | |
577 | /* Link now down */ | |
578 | netif_carrier_off(bp->dev); | |
579 | b44_link_report(bp); | |
580 | } | |
581 | ||
582 | if (bmsr & BMSR_RFAULT) | |
583 | printk(KERN_WARNING PFX "%s: Remote fault detected in PHY\n", | |
584 | bp->dev->name); | |
585 | if (bmsr & BMSR_JCD) | |
586 | printk(KERN_WARNING PFX "%s: Jabber detected in PHY\n", | |
587 | bp->dev->name); | |
588 | } | |
589 | } | |
590 | ||
591 | static void b44_timer(unsigned long __opaque) | |
592 | { | |
593 | struct b44 *bp = (struct b44 *) __opaque; | |
594 | ||
595 | spin_lock_irq(&bp->lock); | |
596 | ||
597 | b44_check_phy(bp); | |
598 | ||
599 | b44_stats_update(bp); | |
600 | ||
601 | spin_unlock_irq(&bp->lock); | |
602 | ||
a72a8179 | 603 | mod_timer(&bp->timer, round_jiffies(jiffies + HZ)); |
1da177e4 LT |
604 | } |
605 | ||
606 | static void b44_tx(struct b44 *bp) | |
607 | { | |
608 | u32 cur, cons; | |
609 | ||
610 | cur = br32(bp, B44_DMATX_STAT) & DMATX_STAT_CDMASK; | |
611 | cur /= sizeof(struct dma_desc); | |
612 | ||
613 | /* XXX needs updating when NETIF_F_SG is supported */ | |
614 | for (cons = bp->tx_cons; cons != cur; cons = NEXT_TX(cons)) { | |
615 | struct ring_info *rp = &bp->tx_buffers[cons]; | |
616 | struct sk_buff *skb = rp->skb; | |
617 | ||
5d9428de | 618 | BUG_ON(skb == NULL); |
1da177e4 LT |
619 | |
620 | pci_unmap_single(bp->pdev, | |
621 | pci_unmap_addr(rp, mapping), | |
622 | skb->len, | |
623 | PCI_DMA_TODEVICE); | |
624 | rp->skb = NULL; | |
625 | dev_kfree_skb_irq(skb); | |
626 | } | |
627 | ||
628 | bp->tx_cons = cons; | |
629 | if (netif_queue_stopped(bp->dev) && | |
630 | TX_BUFFS_AVAIL(bp) > B44_TX_WAKEUP_THRESH) | |
631 | netif_wake_queue(bp->dev); | |
632 | ||
633 | bw32(bp, B44_GPTIMER, 0); | |
634 | } | |
635 | ||
636 | /* Works like this. This chip writes a 'struct rx_header" 30 bytes | |
637 | * before the DMA address you give it. So we allocate 30 more bytes | |
638 | * for the RX buffer, DMA map all of it, skb_reserve the 30 bytes, then | |
639 | * point the chip at 30 bytes past where the rx_header will go. | |
640 | */ | |
641 | static int b44_alloc_rx_skb(struct b44 *bp, int src_idx, u32 dest_idx_unmasked) | |
642 | { | |
643 | struct dma_desc *dp; | |
644 | struct ring_info *src_map, *map; | |
645 | struct rx_header *rh; | |
646 | struct sk_buff *skb; | |
647 | dma_addr_t mapping; | |
648 | int dest_idx; | |
649 | u32 ctrl; | |
650 | ||
651 | src_map = NULL; | |
652 | if (src_idx >= 0) | |
653 | src_map = &bp->rx_buffers[src_idx]; | |
654 | dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1); | |
655 | map = &bp->rx_buffers[dest_idx]; | |
bf0dcbd9 | 656 | skb = netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ); |
1da177e4 LT |
657 | if (skb == NULL) |
658 | return -ENOMEM; | |
659 | ||
660 | mapping = pci_map_single(bp->pdev, skb->data, | |
661 | RX_PKT_BUF_SZ, | |
662 | PCI_DMA_FROMDEVICE); | |
663 | ||
664 | /* Hardware bug work-around, the chip is unable to do PCI DMA | |
665 | to/from anything above 1GB :-( */ | |
639b421b | 666 | if (dma_mapping_error(mapping) || |
97db9ee7 | 667 | mapping + RX_PKT_BUF_SZ > DMA_30BIT_MASK) { |
1da177e4 | 668 | /* Sigh... */ |
639b421b AK |
669 | if (!dma_mapping_error(mapping)) |
670 | pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE); | |
1da177e4 | 671 | dev_kfree_skb_any(skb); |
bf0dcbd9 | 672 | skb = __netdev_alloc_skb(bp->dev, RX_PKT_BUF_SZ, GFP_ATOMIC|GFP_DMA); |
1da177e4 LT |
673 | if (skb == NULL) |
674 | return -ENOMEM; | |
675 | mapping = pci_map_single(bp->pdev, skb->data, | |
676 | RX_PKT_BUF_SZ, | |
677 | PCI_DMA_FROMDEVICE); | |
639b421b | 678 | if (dma_mapping_error(mapping) || |
97db9ee7 | 679 | mapping + RX_PKT_BUF_SZ > DMA_30BIT_MASK) { |
639b421b AK |
680 | if (!dma_mapping_error(mapping)) |
681 | pci_unmap_single(bp->pdev, mapping, RX_PKT_BUF_SZ,PCI_DMA_FROMDEVICE); | |
1da177e4 LT |
682 | dev_kfree_skb_any(skb); |
683 | return -ENOMEM; | |
684 | } | |
685 | } | |
686 | ||
72f4861e SH |
687 | rh = (struct rx_header *) skb->data; |
688 | skb_reserve(skb, RX_PKT_OFFSET); | |
1da177e4 | 689 | |
1da177e4 LT |
690 | rh->len = 0; |
691 | rh->flags = 0; | |
692 | ||
693 | map->skb = skb; | |
694 | pci_unmap_addr_set(map, mapping, mapping); | |
695 | ||
696 | if (src_map != NULL) | |
697 | src_map->skb = NULL; | |
698 | ||
72f4861e | 699 | ctrl = (DESC_CTRL_LEN & (RX_PKT_BUF_SZ - RX_PKT_OFFSET)); |
1da177e4 LT |
700 | if (dest_idx == (B44_RX_RING_SIZE - 1)) |
701 | ctrl |= DESC_CTRL_EOT; | |
702 | ||
703 | dp = &bp->rx_ring[dest_idx]; | |
704 | dp->ctrl = cpu_to_le32(ctrl); | |
72f4861e | 705 | dp->addr = cpu_to_le32((u32) mapping + RX_PKT_OFFSET + bp->dma_offset); |
1da177e4 | 706 | |
9f38c636 JL |
707 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
708 | b44_sync_dma_desc_for_device(bp->pdev, bp->rx_ring_dma, | |
709 | dest_idx * sizeof(dp), | |
710 | DMA_BIDIRECTIONAL); | |
711 | ||
1da177e4 LT |
712 | return RX_PKT_BUF_SZ; |
713 | } | |
714 | ||
715 | static void b44_recycle_rx(struct b44 *bp, int src_idx, u32 dest_idx_unmasked) | |
716 | { | |
717 | struct dma_desc *src_desc, *dest_desc; | |
718 | struct ring_info *src_map, *dest_map; | |
719 | struct rx_header *rh; | |
720 | int dest_idx; | |
a7bed27d | 721 | __le32 ctrl; |
1da177e4 LT |
722 | |
723 | dest_idx = dest_idx_unmasked & (B44_RX_RING_SIZE - 1); | |
724 | dest_desc = &bp->rx_ring[dest_idx]; | |
725 | dest_map = &bp->rx_buffers[dest_idx]; | |
726 | src_desc = &bp->rx_ring[src_idx]; | |
727 | src_map = &bp->rx_buffers[src_idx]; | |
728 | ||
729 | dest_map->skb = src_map->skb; | |
730 | rh = (struct rx_header *) src_map->skb->data; | |
731 | rh->len = 0; | |
732 | rh->flags = 0; | |
733 | pci_unmap_addr_set(dest_map, mapping, | |
734 | pci_unmap_addr(src_map, mapping)); | |
735 | ||
9f38c636 JL |
736 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
737 | b44_sync_dma_desc_for_cpu(bp->pdev, bp->rx_ring_dma, | |
738 | src_idx * sizeof(src_desc), | |
739 | DMA_BIDIRECTIONAL); | |
740 | ||
1da177e4 LT |
741 | ctrl = src_desc->ctrl; |
742 | if (dest_idx == (B44_RX_RING_SIZE - 1)) | |
743 | ctrl |= cpu_to_le32(DESC_CTRL_EOT); | |
744 | else | |
745 | ctrl &= cpu_to_le32(~DESC_CTRL_EOT); | |
746 | ||
747 | dest_desc->ctrl = ctrl; | |
748 | dest_desc->addr = src_desc->addr; | |
9f38c636 | 749 | |
1da177e4 LT |
750 | src_map->skb = NULL; |
751 | ||
9f38c636 JL |
752 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
753 | b44_sync_dma_desc_for_device(bp->pdev, bp->rx_ring_dma, | |
754 | dest_idx * sizeof(dest_desc), | |
755 | DMA_BIDIRECTIONAL); | |
756 | ||
00576e93 | 757 | pci_dma_sync_single_for_device(bp->pdev, le32_to_cpu(src_desc->addr), |
1da177e4 LT |
758 | RX_PKT_BUF_SZ, |
759 | PCI_DMA_FROMDEVICE); | |
760 | } | |
761 | ||
762 | static int b44_rx(struct b44 *bp, int budget) | |
763 | { | |
764 | int received; | |
765 | u32 cons, prod; | |
766 | ||
767 | received = 0; | |
768 | prod = br32(bp, B44_DMARX_STAT) & DMARX_STAT_CDMASK; | |
769 | prod /= sizeof(struct dma_desc); | |
770 | cons = bp->rx_cons; | |
771 | ||
772 | while (cons != prod && budget > 0) { | |
773 | struct ring_info *rp = &bp->rx_buffers[cons]; | |
774 | struct sk_buff *skb = rp->skb; | |
775 | dma_addr_t map = pci_unmap_addr(rp, mapping); | |
776 | struct rx_header *rh; | |
777 | u16 len; | |
778 | ||
779 | pci_dma_sync_single_for_cpu(bp->pdev, map, | |
780 | RX_PKT_BUF_SZ, | |
781 | PCI_DMA_FROMDEVICE); | |
782 | rh = (struct rx_header *) skb->data; | |
a7bed27d | 783 | len = le16_to_cpu(rh->len); |
72f4861e | 784 | if ((len > (RX_PKT_BUF_SZ - RX_PKT_OFFSET)) || |
1da177e4 LT |
785 | (rh->flags & cpu_to_le16(RX_FLAG_ERRORS))) { |
786 | drop_it: | |
787 | b44_recycle_rx(bp, cons, bp->rx_prod); | |
788 | drop_it_no_recycle: | |
789 | bp->stats.rx_dropped++; | |
790 | goto next_pkt; | |
791 | } | |
792 | ||
793 | if (len == 0) { | |
794 | int i = 0; | |
795 | ||
796 | do { | |
797 | udelay(2); | |
798 | barrier(); | |
a7bed27d | 799 | len = le16_to_cpu(rh->len); |
1da177e4 LT |
800 | } while (len == 0 && i++ < 5); |
801 | if (len == 0) | |
802 | goto drop_it; | |
803 | } | |
804 | ||
805 | /* Omit CRC. */ | |
806 | len -= 4; | |
807 | ||
808 | if (len > RX_COPY_THRESHOLD) { | |
809 | int skb_size; | |
810 | skb_size = b44_alloc_rx_skb(bp, cons, bp->rx_prod); | |
811 | if (skb_size < 0) | |
812 | goto drop_it; | |
813 | pci_unmap_single(bp->pdev, map, | |
814 | skb_size, PCI_DMA_FROMDEVICE); | |
815 | /* Leave out rx_header */ | |
72f4861e SH |
816 | skb_put(skb, len + RX_PKT_OFFSET); |
817 | skb_pull(skb, RX_PKT_OFFSET); | |
1da177e4 LT |
818 | } else { |
819 | struct sk_buff *copy_skb; | |
820 | ||
821 | b44_recycle_rx(bp, cons, bp->rx_prod); | |
822 | copy_skb = dev_alloc_skb(len + 2); | |
823 | if (copy_skb == NULL) | |
824 | goto drop_it_no_recycle; | |
825 | ||
1da177e4 LT |
826 | skb_reserve(copy_skb, 2); |
827 | skb_put(copy_skb, len); | |
828 | /* DMA sync done above, copy just the actual packet */ | |
72f4861e | 829 | skb_copy_from_linear_data_offset(skb, RX_PKT_OFFSET, |
d626f62b | 830 | copy_skb->data, len); |
1da177e4 LT |
831 | skb = copy_skb; |
832 | } | |
833 | skb->ip_summed = CHECKSUM_NONE; | |
834 | skb->protocol = eth_type_trans(skb, bp->dev); | |
835 | netif_receive_skb(skb); | |
836 | bp->dev->last_rx = jiffies; | |
837 | received++; | |
838 | budget--; | |
839 | next_pkt: | |
840 | bp->rx_prod = (bp->rx_prod + 1) & | |
841 | (B44_RX_RING_SIZE - 1); | |
842 | cons = (cons + 1) & (B44_RX_RING_SIZE - 1); | |
843 | } | |
844 | ||
845 | bp->rx_cons = cons; | |
846 | bw32(bp, B44_DMARX_PTR, cons * sizeof(struct dma_desc)); | |
847 | ||
848 | return received; | |
849 | } | |
850 | ||
851 | static int b44_poll(struct net_device *netdev, int *budget) | |
852 | { | |
853 | struct b44 *bp = netdev_priv(netdev); | |
854 | int done; | |
855 | ||
856 | spin_lock_irq(&bp->lock); | |
857 | ||
858 | if (bp->istat & (ISTAT_TX | ISTAT_TO)) { | |
859 | /* spin_lock(&bp->tx_lock); */ | |
860 | b44_tx(bp); | |
861 | /* spin_unlock(&bp->tx_lock); */ | |
862 | } | |
863 | spin_unlock_irq(&bp->lock); | |
864 | ||
865 | done = 1; | |
866 | if (bp->istat & ISTAT_RX) { | |
867 | int orig_budget = *budget; | |
868 | int work_done; | |
869 | ||
870 | if (orig_budget > netdev->quota) | |
871 | orig_budget = netdev->quota; | |
872 | ||
873 | work_done = b44_rx(bp, orig_budget); | |
874 | ||
875 | *budget -= work_done; | |
876 | netdev->quota -= work_done; | |
877 | ||
878 | if (work_done >= orig_budget) | |
879 | done = 0; | |
880 | } | |
881 | ||
882 | if (bp->istat & ISTAT_ERRORS) { | |
d15e9c4d FR |
883 | unsigned long flags; |
884 | ||
885 | spin_lock_irqsave(&bp->lock, flags); | |
1da177e4 LT |
886 | b44_halt(bp); |
887 | b44_init_rings(bp); | |
5fc7d61a | 888 | b44_init_hw(bp, B44_FULL_RESET_SKIP_PHY); |
1da177e4 | 889 | netif_wake_queue(bp->dev); |
d15e9c4d | 890 | spin_unlock_irqrestore(&bp->lock, flags); |
1da177e4 LT |
891 | done = 1; |
892 | } | |
893 | ||
894 | if (done) { | |
895 | netif_rx_complete(netdev); | |
896 | b44_enable_ints(bp); | |
897 | } | |
898 | ||
899 | return (done ? 0 : 1); | |
900 | } | |
901 | ||
7d12e780 | 902 | static irqreturn_t b44_interrupt(int irq, void *dev_id) |
1da177e4 LT |
903 | { |
904 | struct net_device *dev = dev_id; | |
905 | struct b44 *bp = netdev_priv(dev); | |
1da177e4 LT |
906 | u32 istat, imask; |
907 | int handled = 0; | |
908 | ||
65b984f2 | 909 | spin_lock(&bp->lock); |
1da177e4 LT |
910 | |
911 | istat = br32(bp, B44_ISTAT); | |
912 | imask = br32(bp, B44_IMASK); | |
913 | ||
e78181fe JB |
914 | /* The interrupt mask register controls which interrupt bits |
915 | * will actually raise an interrupt to the CPU when set by hw/firmware, | |
916 | * but doesn't mask off the bits. | |
1da177e4 LT |
917 | */ |
918 | istat &= imask; | |
919 | if (istat) { | |
920 | handled = 1; | |
ba5eec9c FR |
921 | |
922 | if (unlikely(!netif_running(dev))) { | |
923 | printk(KERN_INFO "%s: late interrupt.\n", dev->name); | |
924 | goto irq_ack; | |
925 | } | |
926 | ||
1da177e4 LT |
927 | if (netif_rx_schedule_prep(dev)) { |
928 | /* NOTE: These writes are posted by the readback of | |
929 | * the ISTAT register below. | |
930 | */ | |
931 | bp->istat = istat; | |
932 | __b44_disable_ints(bp); | |
933 | __netif_rx_schedule(dev); | |
934 | } else { | |
935 | printk(KERN_ERR PFX "%s: Error, poll already scheduled\n", | |
936 | dev->name); | |
937 | } | |
938 | ||
ba5eec9c | 939 | irq_ack: |
1da177e4 LT |
940 | bw32(bp, B44_ISTAT, istat); |
941 | br32(bp, B44_ISTAT); | |
942 | } | |
65b984f2 | 943 | spin_unlock(&bp->lock); |
1da177e4 LT |
944 | return IRQ_RETVAL(handled); |
945 | } | |
946 | ||
947 | static void b44_tx_timeout(struct net_device *dev) | |
948 | { | |
949 | struct b44 *bp = netdev_priv(dev); | |
950 | ||
951 | printk(KERN_ERR PFX "%s: transmit timed out, resetting\n", | |
952 | dev->name); | |
953 | ||
954 | spin_lock_irq(&bp->lock); | |
955 | ||
956 | b44_halt(bp); | |
957 | b44_init_rings(bp); | |
5fc7d61a | 958 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
959 | |
960 | spin_unlock_irq(&bp->lock); | |
961 | ||
962 | b44_enable_ints(bp); | |
963 | ||
964 | netif_wake_queue(dev); | |
965 | } | |
966 | ||
967 | static int b44_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
968 | { | |
969 | struct b44 *bp = netdev_priv(dev); | |
c7193693 | 970 | int rc = NETDEV_TX_OK; |
1da177e4 LT |
971 | dma_addr_t mapping; |
972 | u32 len, entry, ctrl; | |
973 | ||
974 | len = skb->len; | |
975 | spin_lock_irq(&bp->lock); | |
976 | ||
977 | /* This is a hard error, log it. */ | |
978 | if (unlikely(TX_BUFFS_AVAIL(bp) < 1)) { | |
979 | netif_stop_queue(dev); | |
1da177e4 LT |
980 | printk(KERN_ERR PFX "%s: BUG! Tx Ring full when queue awake!\n", |
981 | dev->name); | |
c7193693 | 982 | goto err_out; |
1da177e4 LT |
983 | } |
984 | ||
985 | mapping = pci_map_single(bp->pdev, skb->data, len, PCI_DMA_TODEVICE); | |
97db9ee7 | 986 | if (dma_mapping_error(mapping) || mapping + len > DMA_30BIT_MASK) { |
f65a7177 SH |
987 | struct sk_buff *bounce_skb; |
988 | ||
1da177e4 | 989 | /* Chip can't handle DMA to/from >1GB, use bounce buffer */ |
639b421b AK |
990 | if (!dma_mapping_error(mapping)) |
991 | pci_unmap_single(bp->pdev, mapping, len, PCI_DMA_TODEVICE); | |
1da177e4 | 992 | |
f65a7177 | 993 | bounce_skb = __dev_alloc_skb(len, GFP_ATOMIC | GFP_DMA); |
1da177e4 | 994 | if (!bounce_skb) |
c7193693 | 995 | goto err_out; |
1da177e4 LT |
996 | |
997 | mapping = pci_map_single(bp->pdev, bounce_skb->data, | |
998 | len, PCI_DMA_TODEVICE); | |
97db9ee7 | 999 | if (dma_mapping_error(mapping) || mapping + len > DMA_30BIT_MASK) { |
639b421b AK |
1000 | if (!dma_mapping_error(mapping)) |
1001 | pci_unmap_single(bp->pdev, mapping, | |
f65a7177 | 1002 | len, PCI_DMA_TODEVICE); |
1da177e4 | 1003 | dev_kfree_skb_any(bounce_skb); |
c7193693 | 1004 | goto err_out; |
1da177e4 LT |
1005 | } |
1006 | ||
f65a7177 | 1007 | skb_copy_from_linear_data(skb, skb_put(bounce_skb, len), len); |
1da177e4 LT |
1008 | dev_kfree_skb_any(skb); |
1009 | skb = bounce_skb; | |
1010 | } | |
1011 | ||
1012 | entry = bp->tx_prod; | |
1013 | bp->tx_buffers[entry].skb = skb; | |
1014 | pci_unmap_addr_set(&bp->tx_buffers[entry], mapping, mapping); | |
1015 | ||
1016 | ctrl = (len & DESC_CTRL_LEN); | |
1017 | ctrl |= DESC_CTRL_IOC | DESC_CTRL_SOF | DESC_CTRL_EOF; | |
1018 | if (entry == (B44_TX_RING_SIZE - 1)) | |
1019 | ctrl |= DESC_CTRL_EOT; | |
1020 | ||
1021 | bp->tx_ring[entry].ctrl = cpu_to_le32(ctrl); | |
1022 | bp->tx_ring[entry].addr = cpu_to_le32((u32) mapping+bp->dma_offset); | |
1023 | ||
9f38c636 JL |
1024 | if (bp->flags & B44_FLAG_TX_RING_HACK) |
1025 | b44_sync_dma_desc_for_device(bp->pdev, bp->tx_ring_dma, | |
1026 | entry * sizeof(bp->tx_ring[0]), | |
1027 | DMA_TO_DEVICE); | |
1028 | ||
1da177e4 LT |
1029 | entry = NEXT_TX(entry); |
1030 | ||
1031 | bp->tx_prod = entry; | |
1032 | ||
1033 | wmb(); | |
1034 | ||
1035 | bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc)); | |
1036 | if (bp->flags & B44_FLAG_BUGGY_TXPTR) | |
1037 | bw32(bp, B44_DMATX_PTR, entry * sizeof(struct dma_desc)); | |
1038 | if (bp->flags & B44_FLAG_REORDER_BUG) | |
1039 | br32(bp, B44_DMATX_PTR); | |
1040 | ||
1041 | if (TX_BUFFS_AVAIL(bp) < 1) | |
1042 | netif_stop_queue(dev); | |
1043 | ||
c7193693 FR |
1044 | dev->trans_start = jiffies; |
1045 | ||
1046 | out_unlock: | |
1da177e4 LT |
1047 | spin_unlock_irq(&bp->lock); |
1048 | ||
c7193693 | 1049 | return rc; |
1da177e4 | 1050 | |
c7193693 FR |
1051 | err_out: |
1052 | rc = NETDEV_TX_BUSY; | |
1053 | goto out_unlock; | |
1da177e4 LT |
1054 | } |
1055 | ||
1056 | static int b44_change_mtu(struct net_device *dev, int new_mtu) | |
1057 | { | |
1058 | struct b44 *bp = netdev_priv(dev); | |
1059 | ||
1060 | if (new_mtu < B44_MIN_MTU || new_mtu > B44_MAX_MTU) | |
1061 | return -EINVAL; | |
1062 | ||
1063 | if (!netif_running(dev)) { | |
1064 | /* We'll just catch it later when the | |
1065 | * device is up'd. | |
1066 | */ | |
1067 | dev->mtu = new_mtu; | |
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | spin_lock_irq(&bp->lock); | |
1072 | b44_halt(bp); | |
1073 | dev->mtu = new_mtu; | |
1074 | b44_init_rings(bp); | |
5fc7d61a | 1075 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
1076 | spin_unlock_irq(&bp->lock); |
1077 | ||
1078 | b44_enable_ints(bp); | |
10badc21 | 1079 | |
1da177e4 LT |
1080 | return 0; |
1081 | } | |
1082 | ||
1083 | /* Free up pending packets in all rx/tx rings. | |
1084 | * | |
1085 | * The chip has been shut down and the driver detached from | |
1086 | * the networking, so no interrupts or new tx packets will | |
1087 | * end up in the driver. bp->lock is not held and we are not | |
1088 | * in an interrupt context and thus may sleep. | |
1089 | */ | |
1090 | static void b44_free_rings(struct b44 *bp) | |
1091 | { | |
1092 | struct ring_info *rp; | |
1093 | int i; | |
1094 | ||
1095 | for (i = 0; i < B44_RX_RING_SIZE; i++) { | |
1096 | rp = &bp->rx_buffers[i]; | |
1097 | ||
1098 | if (rp->skb == NULL) | |
1099 | continue; | |
1100 | pci_unmap_single(bp->pdev, | |
1101 | pci_unmap_addr(rp, mapping), | |
1102 | RX_PKT_BUF_SZ, | |
1103 | PCI_DMA_FROMDEVICE); | |
1104 | dev_kfree_skb_any(rp->skb); | |
1105 | rp->skb = NULL; | |
1106 | } | |
1107 | ||
1108 | /* XXX needs changes once NETIF_F_SG is set... */ | |
1109 | for (i = 0; i < B44_TX_RING_SIZE; i++) { | |
1110 | rp = &bp->tx_buffers[i]; | |
1111 | ||
1112 | if (rp->skb == NULL) | |
1113 | continue; | |
1114 | pci_unmap_single(bp->pdev, | |
1115 | pci_unmap_addr(rp, mapping), | |
1116 | rp->skb->len, | |
1117 | PCI_DMA_TODEVICE); | |
1118 | dev_kfree_skb_any(rp->skb); | |
1119 | rp->skb = NULL; | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | /* Initialize tx/rx rings for packet processing. | |
1124 | * | |
1125 | * The chip has been shut down and the driver detached from | |
1126 | * the networking, so no interrupts or new tx packets will | |
874a6214 | 1127 | * end up in the driver. |
1da177e4 LT |
1128 | */ |
1129 | static void b44_init_rings(struct b44 *bp) | |
1130 | { | |
1131 | int i; | |
1132 | ||
1133 | b44_free_rings(bp); | |
1134 | ||
1135 | memset(bp->rx_ring, 0, B44_RX_RING_BYTES); | |
1136 | memset(bp->tx_ring, 0, B44_TX_RING_BYTES); | |
1137 | ||
9f38c636 JL |
1138 | if (bp->flags & B44_FLAG_RX_RING_HACK) |
1139 | dma_sync_single_for_device(&bp->pdev->dev, bp->rx_ring_dma, | |
1140 | DMA_TABLE_BYTES, | |
1141 | PCI_DMA_BIDIRECTIONAL); | |
1142 | ||
1143 | if (bp->flags & B44_FLAG_TX_RING_HACK) | |
1144 | dma_sync_single_for_device(&bp->pdev->dev, bp->tx_ring_dma, | |
1145 | DMA_TABLE_BYTES, | |
1146 | PCI_DMA_TODEVICE); | |
1147 | ||
1da177e4 LT |
1148 | for (i = 0; i < bp->rx_pending; i++) { |
1149 | if (b44_alloc_rx_skb(bp, -1, i) < 0) | |
1150 | break; | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | /* | |
1155 | * Must not be invoked with interrupt sources disabled and | |
1156 | * the hardware shutdown down. | |
1157 | */ | |
1158 | static void b44_free_consistent(struct b44 *bp) | |
1159 | { | |
b4558ea9 JJ |
1160 | kfree(bp->rx_buffers); |
1161 | bp->rx_buffers = NULL; | |
1162 | kfree(bp->tx_buffers); | |
1163 | bp->tx_buffers = NULL; | |
1da177e4 | 1164 | if (bp->rx_ring) { |
9f38c636 JL |
1165 | if (bp->flags & B44_FLAG_RX_RING_HACK) { |
1166 | dma_unmap_single(&bp->pdev->dev, bp->rx_ring_dma, | |
1167 | DMA_TABLE_BYTES, | |
1168 | DMA_BIDIRECTIONAL); | |
1169 | kfree(bp->rx_ring); | |
1170 | } else | |
1171 | pci_free_consistent(bp->pdev, DMA_TABLE_BYTES, | |
1172 | bp->rx_ring, bp->rx_ring_dma); | |
1da177e4 | 1173 | bp->rx_ring = NULL; |
9f38c636 | 1174 | bp->flags &= ~B44_FLAG_RX_RING_HACK; |
1da177e4 LT |
1175 | } |
1176 | if (bp->tx_ring) { | |
9f38c636 JL |
1177 | if (bp->flags & B44_FLAG_TX_RING_HACK) { |
1178 | dma_unmap_single(&bp->pdev->dev, bp->tx_ring_dma, | |
1179 | DMA_TABLE_BYTES, | |
1180 | DMA_TO_DEVICE); | |
1181 | kfree(bp->tx_ring); | |
1182 | } else | |
1183 | pci_free_consistent(bp->pdev, DMA_TABLE_BYTES, | |
1184 | bp->tx_ring, bp->tx_ring_dma); | |
1da177e4 | 1185 | bp->tx_ring = NULL; |
9f38c636 | 1186 | bp->flags &= ~B44_FLAG_TX_RING_HACK; |
1da177e4 LT |
1187 | } |
1188 | } | |
1189 | ||
1190 | /* | |
1191 | * Must not be invoked with interrupt sources disabled and | |
1192 | * the hardware shutdown down. Can sleep. | |
1193 | */ | |
1194 | static int b44_alloc_consistent(struct b44 *bp) | |
1195 | { | |
1196 | int size; | |
1197 | ||
1198 | size = B44_RX_RING_SIZE * sizeof(struct ring_info); | |
874a6214 | 1199 | bp->rx_buffers = kzalloc(size, GFP_KERNEL); |
1da177e4 LT |
1200 | if (!bp->rx_buffers) |
1201 | goto out_err; | |
1da177e4 LT |
1202 | |
1203 | size = B44_TX_RING_SIZE * sizeof(struct ring_info); | |
874a6214 | 1204 | bp->tx_buffers = kzalloc(size, GFP_KERNEL); |
1da177e4 LT |
1205 | if (!bp->tx_buffers) |
1206 | goto out_err; | |
1da177e4 LT |
1207 | |
1208 | size = DMA_TABLE_BYTES; | |
1209 | bp->rx_ring = pci_alloc_consistent(bp->pdev, size, &bp->rx_ring_dma); | |
9f38c636 JL |
1210 | if (!bp->rx_ring) { |
1211 | /* Allocation may have failed due to pci_alloc_consistent | |
1212 | insisting on use of GFP_DMA, which is more restrictive | |
1213 | than necessary... */ | |
1214 | struct dma_desc *rx_ring; | |
1215 | dma_addr_t rx_ring_dma; | |
1216 | ||
874a6214 FR |
1217 | rx_ring = kzalloc(size, GFP_KERNEL); |
1218 | if (!rx_ring) | |
9f38c636 JL |
1219 | goto out_err; |
1220 | ||
9f38c636 JL |
1221 | rx_ring_dma = dma_map_single(&bp->pdev->dev, rx_ring, |
1222 | DMA_TABLE_BYTES, | |
1223 | DMA_BIDIRECTIONAL); | |
1224 | ||
639b421b | 1225 | if (dma_mapping_error(rx_ring_dma) || |
97db9ee7 | 1226 | rx_ring_dma + size > DMA_30BIT_MASK) { |
9f38c636 JL |
1227 | kfree(rx_ring); |
1228 | goto out_err; | |
1229 | } | |
1230 | ||
1231 | bp->rx_ring = rx_ring; | |
1232 | bp->rx_ring_dma = rx_ring_dma; | |
1233 | bp->flags |= B44_FLAG_RX_RING_HACK; | |
1234 | } | |
1da177e4 LT |
1235 | |
1236 | bp->tx_ring = pci_alloc_consistent(bp->pdev, size, &bp->tx_ring_dma); | |
9f38c636 JL |
1237 | if (!bp->tx_ring) { |
1238 | /* Allocation may have failed due to pci_alloc_consistent | |
1239 | insisting on use of GFP_DMA, which is more restrictive | |
1240 | than necessary... */ | |
1241 | struct dma_desc *tx_ring; | |
1242 | dma_addr_t tx_ring_dma; | |
1243 | ||
874a6214 FR |
1244 | tx_ring = kzalloc(size, GFP_KERNEL); |
1245 | if (!tx_ring) | |
9f38c636 JL |
1246 | goto out_err; |
1247 | ||
9f38c636 JL |
1248 | tx_ring_dma = dma_map_single(&bp->pdev->dev, tx_ring, |
1249 | DMA_TABLE_BYTES, | |
1250 | DMA_TO_DEVICE); | |
1251 | ||
639b421b | 1252 | if (dma_mapping_error(tx_ring_dma) || |
97db9ee7 | 1253 | tx_ring_dma + size > DMA_30BIT_MASK) { |
9f38c636 JL |
1254 | kfree(tx_ring); |
1255 | goto out_err; | |
1256 | } | |
1257 | ||
1258 | bp->tx_ring = tx_ring; | |
1259 | bp->tx_ring_dma = tx_ring_dma; | |
1260 | bp->flags |= B44_FLAG_TX_RING_HACK; | |
1261 | } | |
1da177e4 LT |
1262 | |
1263 | return 0; | |
1264 | ||
1265 | out_err: | |
1266 | b44_free_consistent(bp); | |
1267 | return -ENOMEM; | |
1268 | } | |
1269 | ||
1270 | /* bp->lock is held. */ | |
1271 | static void b44_clear_stats(struct b44 *bp) | |
1272 | { | |
1273 | unsigned long reg; | |
1274 | ||
1275 | bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); | |
1276 | for (reg = B44_TX_GOOD_O; reg <= B44_TX_PAUSE; reg += 4UL) | |
1277 | br32(bp, reg); | |
1278 | for (reg = B44_RX_GOOD_O; reg <= B44_RX_NPAUSE; reg += 4UL) | |
1279 | br32(bp, reg); | |
1280 | } | |
1281 | ||
1282 | /* bp->lock is held. */ | |
1283 | static void b44_chip_reset(struct b44 *bp) | |
1284 | { | |
1285 | if (ssb_is_core_up(bp)) { | |
1286 | bw32(bp, B44_RCV_LAZY, 0); | |
1287 | bw32(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE); | |
40ee8c76 | 1288 | b44_wait_bit(bp, B44_ENET_CTRL, ENET_CTRL_DISABLE, 200, 1); |
1da177e4 LT |
1289 | bw32(bp, B44_DMATX_CTRL, 0); |
1290 | bp->tx_prod = bp->tx_cons = 0; | |
1291 | if (br32(bp, B44_DMARX_STAT) & DMARX_STAT_EMASK) { | |
1292 | b44_wait_bit(bp, B44_DMARX_STAT, DMARX_STAT_SIDLE, | |
1293 | 100, 0); | |
1294 | } | |
1295 | bw32(bp, B44_DMARX_CTRL, 0); | |
1296 | bp->rx_prod = bp->rx_cons = 0; | |
1297 | } else { | |
1298 | ssb_pci_setup(bp, (bp->core_unit == 0 ? | |
1299 | SBINTVEC_ENET0 : | |
1300 | SBINTVEC_ENET1)); | |
1301 | } | |
1302 | ||
1303 | ssb_core_reset(bp); | |
1304 | ||
1305 | b44_clear_stats(bp); | |
1306 | ||
1307 | /* Make PHY accessible. */ | |
1308 | bw32(bp, B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE | | |
1309 | (0x0d & MDIO_CTRL_MAXF_MASK))); | |
1310 | br32(bp, B44_MDIO_CTRL); | |
1311 | ||
1312 | if (!(br32(bp, B44_DEVCTRL) & DEVCTRL_IPP)) { | |
1313 | bw32(bp, B44_ENET_CTRL, ENET_CTRL_EPSEL); | |
1314 | br32(bp, B44_ENET_CTRL); | |
1315 | bp->flags &= ~B44_FLAG_INTERNAL_PHY; | |
1316 | } else { | |
1317 | u32 val = br32(bp, B44_DEVCTRL); | |
1318 | ||
1319 | if (val & DEVCTRL_EPR) { | |
1320 | bw32(bp, B44_DEVCTRL, (val & ~DEVCTRL_EPR)); | |
1321 | br32(bp, B44_DEVCTRL); | |
1322 | udelay(100); | |
1323 | } | |
1324 | bp->flags |= B44_FLAG_INTERNAL_PHY; | |
1325 | } | |
1326 | } | |
1327 | ||
1328 | /* bp->lock is held. */ | |
1329 | static void b44_halt(struct b44 *bp) | |
1330 | { | |
1331 | b44_disable_ints(bp); | |
1332 | b44_chip_reset(bp); | |
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; | |
1352 | ||
1353 | if (netif_running(dev)) | |
1354 | return -EBUSY; | |
1355 | ||
391fc09a GZ |
1356 | if (!is_valid_ether_addr(addr->sa_data)) |
1357 | return -EINVAL; | |
1358 | ||
1da177e4 LT |
1359 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); |
1360 | ||
1361 | spin_lock_irq(&bp->lock); | |
1362 | __b44_set_mac_addr(bp); | |
1363 | spin_unlock_irq(&bp->lock); | |
1364 | ||
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | /* Called at device open time to get the chip ready for | |
1369 | * packet processing. Invoked with bp->lock held. | |
1370 | */ | |
1371 | static void __b44_set_rx_mode(struct net_device *); | |
5fc7d61a | 1372 | static void b44_init_hw(struct b44 *bp, int reset_kind) |
1da177e4 LT |
1373 | { |
1374 | u32 val; | |
1375 | ||
1376 | b44_chip_reset(bp); | |
5fc7d61a | 1377 | if (reset_kind == B44_FULL_RESET) { |
00e8b3aa GZ |
1378 | b44_phy_reset(bp); |
1379 | b44_setup_phy(bp); | |
1380 | } | |
1da177e4 LT |
1381 | |
1382 | /* Enable CRC32, set proper LED modes and power on PHY */ | |
1383 | bw32(bp, B44_MAC_CTRL, MAC_CTRL_CRC32_ENAB | MAC_CTRL_PHY_LEDCTRL); | |
1384 | bw32(bp, B44_RCV_LAZY, (1 << RCV_LAZY_FC_SHIFT)); | |
1385 | ||
1386 | /* This sets the MAC address too. */ | |
1387 | __b44_set_rx_mode(bp->dev); | |
1388 | ||
1389 | /* MTU + eth header + possible VLAN tag + struct rx_header */ | |
1390 | bw32(bp, B44_RXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN); | |
1391 | bw32(bp, B44_TXMAXLEN, bp->dev->mtu + ETH_HLEN + 8 + RX_HEADER_LEN); | |
1392 | ||
1393 | bw32(bp, B44_TX_WMARK, 56); /* XXX magic */ | |
5fc7d61a MC |
1394 | if (reset_kind == B44_PARTIAL_RESET) { |
1395 | bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE | | |
72f4861e | 1396 | (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT))); |
5fc7d61a | 1397 | } else { |
00e8b3aa GZ |
1398 | bw32(bp, B44_DMATX_CTRL, DMATX_CTRL_ENABLE); |
1399 | bw32(bp, B44_DMATX_ADDR, bp->tx_ring_dma + bp->dma_offset); | |
1400 | bw32(bp, B44_DMARX_CTRL, (DMARX_CTRL_ENABLE | | |
72f4861e | 1401 | (RX_PKT_OFFSET << DMARX_CTRL_ROSHIFT))); |
00e8b3aa | 1402 | bw32(bp, B44_DMARX_ADDR, bp->rx_ring_dma + bp->dma_offset); |
1da177e4 | 1403 | |
00e8b3aa GZ |
1404 | bw32(bp, B44_DMARX_PTR, bp->rx_pending); |
1405 | bp->rx_prod = bp->rx_pending; | |
1da177e4 | 1406 | |
00e8b3aa | 1407 | bw32(bp, B44_MIB_CTRL, MIB_CTRL_CLR_ON_READ); |
00e8b3aa | 1408 | } |
1da177e4 LT |
1409 | |
1410 | val = br32(bp, B44_ENET_CTRL); | |
1411 | bw32(bp, B44_ENET_CTRL, (val | ENET_CTRL_ENABLE)); | |
1412 | } | |
1413 | ||
1414 | static int b44_open(struct net_device *dev) | |
1415 | { | |
1416 | struct b44 *bp = netdev_priv(dev); | |
1417 | int err; | |
1418 | ||
1419 | err = b44_alloc_consistent(bp); | |
1420 | if (err) | |
6c2f4267 | 1421 | goto out; |
1da177e4 LT |
1422 | |
1423 | b44_init_rings(bp); | |
5fc7d61a | 1424 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 | 1425 | |
e254e9bf JL |
1426 | b44_check_phy(bp); |
1427 | ||
1fb9df5d | 1428 | err = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev); |
6c2f4267 FR |
1429 | if (unlikely(err < 0)) { |
1430 | b44_chip_reset(bp); | |
1431 | b44_free_rings(bp); | |
1432 | b44_free_consistent(bp); | |
1433 | goto out; | |
1434 | } | |
1da177e4 LT |
1435 | |
1436 | init_timer(&bp->timer); | |
1437 | bp->timer.expires = jiffies + HZ; | |
1438 | bp->timer.data = (unsigned long) bp; | |
1439 | bp->timer.function = b44_timer; | |
1440 | add_timer(&bp->timer); | |
1441 | ||
1442 | b44_enable_ints(bp); | |
d9e2d185 | 1443 | netif_start_queue(dev); |
6c2f4267 | 1444 | out: |
1da177e4 LT |
1445 | return err; |
1446 | } | |
1447 | ||
1448 | #if 0 | |
1449 | /*static*/ void b44_dump_state(struct b44 *bp) | |
1450 | { | |
1451 | u32 val32, val32_2, val32_3, val32_4, val32_5; | |
1452 | u16 val16; | |
1453 | ||
1454 | pci_read_config_word(bp->pdev, PCI_STATUS, &val16); | |
1455 | printk("DEBUG: PCI status [%04x] \n", val16); | |
1456 | ||
1457 | } | |
1458 | #endif | |
1459 | ||
1460 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1461 | /* | |
1462 | * Polling receive - used by netconsole and other diagnostic tools | |
1463 | * to allow network i/o with interrupts disabled. | |
1464 | */ | |
1465 | static void b44_poll_controller(struct net_device *dev) | |
1466 | { | |
1467 | disable_irq(dev->irq); | |
7d12e780 | 1468 | b44_interrupt(dev->irq, dev); |
1da177e4 LT |
1469 | enable_irq(dev->irq); |
1470 | } | |
1471 | #endif | |
1472 | ||
725ad800 GZ |
1473 | static void bwfilter_table(struct b44 *bp, u8 *pp, u32 bytes, u32 table_offset) |
1474 | { | |
1475 | u32 i; | |
1476 | u32 *pattern = (u32 *) pp; | |
1477 | ||
1478 | for (i = 0; i < bytes; i += sizeof(u32)) { | |
1479 | bw32(bp, B44_FILT_ADDR, table_offset + i); | |
1480 | bw32(bp, B44_FILT_DATA, pattern[i / sizeof(u32)]); | |
1481 | } | |
1482 | } | |
1483 | ||
1484 | static int b44_magic_pattern(u8 *macaddr, u8 *ppattern, u8 *pmask, int offset) | |
1485 | { | |
1486 | int magicsync = 6; | |
1487 | int k, j, len = offset; | |
1488 | int ethaddr_bytes = ETH_ALEN; | |
1489 | ||
1490 | memset(ppattern + offset, 0xff, magicsync); | |
1491 | for (j = 0; j < magicsync; j++) | |
1492 | set_bit(len++, (unsigned long *) pmask); | |
1493 | ||
1494 | for (j = 0; j < B44_MAX_PATTERNS; j++) { | |
1495 | if ((B44_PATTERN_SIZE - len) >= ETH_ALEN) | |
1496 | ethaddr_bytes = ETH_ALEN; | |
1497 | else | |
1498 | ethaddr_bytes = B44_PATTERN_SIZE - len; | |
1499 | if (ethaddr_bytes <=0) | |
1500 | break; | |
1501 | for (k = 0; k< ethaddr_bytes; k++) { | |
1502 | ppattern[offset + magicsync + | |
1503 | (j * ETH_ALEN) + k] = macaddr[k]; | |
1504 | len++; | |
1505 | set_bit(len, (unsigned long *) pmask); | |
1506 | } | |
1507 | } | |
1508 | return len - 1; | |
1509 | } | |
1510 | ||
1511 | /* Setup magic packet patterns in the b44 WOL | |
1512 | * pattern matching filter. | |
1513 | */ | |
1514 | static void b44_setup_pseudo_magicp(struct b44 *bp) | |
1515 | { | |
1516 | ||
1517 | u32 val; | |
1518 | int plen0, plen1, plen2; | |
1519 | u8 *pwol_pattern; | |
1520 | u8 pwol_mask[B44_PMASK_SIZE]; | |
1521 | ||
dd00cc48 | 1522 | pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL); |
725ad800 GZ |
1523 | if (!pwol_pattern) { |
1524 | printk(KERN_ERR PFX "Memory not available for WOL\n"); | |
1525 | return; | |
1526 | } | |
1527 | ||
1528 | /* Ipv4 magic packet pattern - pattern 0.*/ | |
725ad800 GZ |
1529 | memset(pwol_mask, 0, B44_PMASK_SIZE); |
1530 | plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, | |
1531 | B44_ETHIPV4UDP_HLEN); | |
1532 | ||
1533 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, B44_PATTERN_BASE); | |
1534 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, B44_PMASK_BASE); | |
1535 | ||
1536 | /* Raw ethernet II magic packet pattern - pattern 1 */ | |
1537 | memset(pwol_pattern, 0, B44_PATTERN_SIZE); | |
1538 | memset(pwol_mask, 0, B44_PMASK_SIZE); | |
1539 | plen1 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, | |
1540 | ETH_HLEN); | |
1541 | ||
1542 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, | |
1543 | B44_PATTERN_BASE + B44_PATTERN_SIZE); | |
1544 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, | |
1545 | B44_PMASK_BASE + B44_PMASK_SIZE); | |
1546 | ||
1547 | /* Ipv6 magic packet pattern - pattern 2 */ | |
1548 | memset(pwol_pattern, 0, B44_PATTERN_SIZE); | |
1549 | memset(pwol_mask, 0, B44_PMASK_SIZE); | |
1550 | plen2 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask, | |
1551 | B44_ETHIPV6UDP_HLEN); | |
1552 | ||
1553 | bwfilter_table(bp, pwol_pattern, B44_PATTERN_SIZE, | |
1554 | B44_PATTERN_BASE + B44_PATTERN_SIZE + B44_PATTERN_SIZE); | |
1555 | bwfilter_table(bp, pwol_mask, B44_PMASK_SIZE, | |
1556 | B44_PMASK_BASE + B44_PMASK_SIZE + B44_PMASK_SIZE); | |
1557 | ||
1558 | kfree(pwol_pattern); | |
1559 | ||
1560 | /* set these pattern's lengths: one less than each real length */ | |
1561 | val = plen0 | (plen1 << 8) | (plen2 << 16) | WKUP_LEN_ENABLE_THREE; | |
1562 | bw32(bp, B44_WKUP_LEN, val); | |
1563 | ||
1564 | /* enable wakeup pattern matching */ | |
1565 | val = br32(bp, B44_DEVCTRL); | |
1566 | bw32(bp, B44_DEVCTRL, val | DEVCTRL_PFE); | |
1567 | ||
1568 | } | |
52cafd96 GZ |
1569 | |
1570 | static void b44_setup_wol(struct b44 *bp) | |
1571 | { | |
1572 | u32 val; | |
1573 | u16 pmval; | |
1574 | ||
1575 | bw32(bp, B44_RXCONFIG, RXCONFIG_ALLMULTI); | |
1576 | ||
1577 | if (bp->flags & B44_FLAG_B0_ANDLATER) { | |
1578 | ||
1579 | bw32(bp, B44_WKUP_LEN, WKUP_LEN_DISABLE); | |
1580 | ||
1581 | val = bp->dev->dev_addr[2] << 24 | | |
1582 | bp->dev->dev_addr[3] << 16 | | |
1583 | bp->dev->dev_addr[4] << 8 | | |
1584 | bp->dev->dev_addr[5]; | |
1585 | bw32(bp, B44_ADDR_LO, val); | |
1586 | ||
1587 | val = bp->dev->dev_addr[0] << 8 | | |
1588 | bp->dev->dev_addr[1]; | |
1589 | bw32(bp, B44_ADDR_HI, val); | |
1590 | ||
1591 | val = br32(bp, B44_DEVCTRL); | |
1592 | bw32(bp, B44_DEVCTRL, val | DEVCTRL_MPM | DEVCTRL_PFE); | |
1593 | ||
725ad800 GZ |
1594 | } else { |
1595 | b44_setup_pseudo_magicp(bp); | |
1596 | } | |
52cafd96 GZ |
1597 | |
1598 | val = br32(bp, B44_SBTMSLOW); | |
1599 | bw32(bp, B44_SBTMSLOW, val | SBTMSLOW_PE); | |
1600 | ||
1601 | pci_read_config_word(bp->pdev, SSB_PMCSR, &pmval); | |
1602 | pci_write_config_word(bp->pdev, SSB_PMCSR, pmval | SSB_PE); | |
1603 | ||
1604 | } | |
1605 | ||
1da177e4 LT |
1606 | static int b44_close(struct net_device *dev) |
1607 | { | |
1608 | struct b44 *bp = netdev_priv(dev); | |
1609 | ||
1610 | netif_stop_queue(dev); | |
1611 | ||
ba5eec9c FR |
1612 | netif_poll_disable(dev); |
1613 | ||
1da177e4 LT |
1614 | del_timer_sync(&bp->timer); |
1615 | ||
1616 | spin_lock_irq(&bp->lock); | |
1617 | ||
1618 | #if 0 | |
1619 | b44_dump_state(bp); | |
1620 | #endif | |
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 | ||
ba5eec9c FR |
1629 | netif_poll_enable(dev); |
1630 | ||
52cafd96 | 1631 | if (bp->flags & B44_FLAG_WOL_ENABLE) { |
5fc7d61a | 1632 | b44_init_hw(bp, B44_PARTIAL_RESET); |
52cafd96 GZ |
1633 | b44_setup_wol(bp); |
1634 | } | |
1635 | ||
1da177e4 LT |
1636 | b44_free_consistent(bp); |
1637 | ||
1638 | return 0; | |
1639 | } | |
1640 | ||
1641 | static struct net_device_stats *b44_get_stats(struct net_device *dev) | |
1642 | { | |
1643 | struct b44 *bp = netdev_priv(dev); | |
1644 | struct net_device_stats *nstat = &bp->stats; | |
1645 | struct b44_hw_stats *hwstat = &bp->hw_stats; | |
1646 | ||
1647 | /* Convert HW stats into netdevice stats. */ | |
1648 | nstat->rx_packets = hwstat->rx_pkts; | |
1649 | nstat->tx_packets = hwstat->tx_pkts; | |
1650 | nstat->rx_bytes = hwstat->rx_octets; | |
1651 | nstat->tx_bytes = hwstat->tx_octets; | |
1652 | nstat->tx_errors = (hwstat->tx_jabber_pkts + | |
1653 | hwstat->tx_oversize_pkts + | |
1654 | hwstat->tx_underruns + | |
1655 | hwstat->tx_excessive_cols + | |
1656 | hwstat->tx_late_cols); | |
1657 | nstat->multicast = hwstat->tx_multicast_pkts; | |
1658 | nstat->collisions = hwstat->tx_total_cols; | |
1659 | ||
1660 | nstat->rx_length_errors = (hwstat->rx_oversize_pkts + | |
1661 | hwstat->rx_undersize); | |
1662 | nstat->rx_over_errors = hwstat->rx_missed_pkts; | |
1663 | nstat->rx_frame_errors = hwstat->rx_align_errs; | |
1664 | nstat->rx_crc_errors = hwstat->rx_crc_errs; | |
1665 | nstat->rx_errors = (hwstat->rx_jabber_pkts + | |
1666 | hwstat->rx_oversize_pkts + | |
1667 | hwstat->rx_missed_pkts + | |
1668 | hwstat->rx_crc_align_errs + | |
1669 | hwstat->rx_undersize + | |
1670 | hwstat->rx_crc_errs + | |
1671 | hwstat->rx_align_errs + | |
1672 | hwstat->rx_symbol_errs); | |
1673 | ||
1674 | nstat->tx_aborted_errors = hwstat->tx_underruns; | |
1675 | #if 0 | |
1676 | /* Carrier lost counter seems to be broken for some devices */ | |
1677 | nstat->tx_carrier_errors = hwstat->tx_carrier_lost; | |
1678 | #endif | |
1679 | ||
1680 | return nstat; | |
1681 | } | |
1682 | ||
1683 | static int __b44_load_mcast(struct b44 *bp, struct net_device *dev) | |
1684 | { | |
1685 | struct dev_mc_list *mclist; | |
1686 | int i, num_ents; | |
1687 | ||
1688 | num_ents = min_t(int, dev->mc_count, B44_MCAST_TABLE_SIZE); | |
1689 | mclist = dev->mc_list; | |
1690 | for (i = 0; mclist && i < num_ents; i++, mclist = mclist->next) { | |
1691 | __b44_cam_write(bp, mclist->dmi_addr, i + 1); | |
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); | |
1703 | if (dev->flags & IFF_PROMISC) { | |
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 JG |
1712 | if ((dev->flags & IFF_ALLMULTI) || |
1713 | (dev->mc_count > 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); | |
1751 | struct pci_dev *pci_dev = bp->pdev; | |
1752 | ||
1753 | strcpy (info->driver, DRV_MODULE_NAME); | |
1754 | strcpy (info->version, DRV_MODULE_VERSION); | |
1755 | strcpy (info->bus_info, pci_name(pci_dev)); | |
1756 | } | |
1757 | ||
1758 | static int b44_nway_reset(struct net_device *dev) | |
1759 | { | |
1760 | struct b44 *bp = netdev_priv(dev); | |
1761 | u32 bmcr; | |
1762 | int r; | |
1763 | ||
1764 | spin_lock_irq(&bp->lock); | |
1765 | b44_readphy(bp, MII_BMCR, &bmcr); | |
1766 | b44_readphy(bp, MII_BMCR, &bmcr); | |
1767 | r = -EINVAL; | |
1768 | if (bmcr & BMCR_ANENABLE) { | |
1769 | b44_writephy(bp, MII_BMCR, | |
1770 | bmcr | BMCR_ANRESTART); | |
1771 | r = 0; | |
1772 | } | |
1773 | spin_unlock_irq(&bp->lock); | |
1774 | ||
1775 | return r; | |
1776 | } | |
1777 | ||
1778 | static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1779 | { | |
1780 | struct b44 *bp = netdev_priv(dev); | |
1781 | ||
1da177e4 LT |
1782 | cmd->supported = (SUPPORTED_Autoneg); |
1783 | cmd->supported |= (SUPPORTED_100baseT_Half | | |
1784 | SUPPORTED_100baseT_Full | | |
1785 | SUPPORTED_10baseT_Half | | |
1786 | SUPPORTED_10baseT_Full | | |
1787 | SUPPORTED_MII); | |
1788 | ||
1789 | cmd->advertising = 0; | |
1790 | if (bp->flags & B44_FLAG_ADV_10HALF) | |
adf6e000 | 1791 | cmd->advertising |= ADVERTISED_10baseT_Half; |
1da177e4 | 1792 | if (bp->flags & B44_FLAG_ADV_10FULL) |
adf6e000 | 1793 | cmd->advertising |= ADVERTISED_10baseT_Full; |
1da177e4 | 1794 | if (bp->flags & B44_FLAG_ADV_100HALF) |
adf6e000 | 1795 | cmd->advertising |= ADVERTISED_100baseT_Half; |
1da177e4 | 1796 | if (bp->flags & B44_FLAG_ADV_100FULL) |
adf6e000 MW |
1797 | cmd->advertising |= ADVERTISED_100baseT_Full; |
1798 | cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause; | |
1da177e4 LT |
1799 | cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ? |
1800 | SPEED_100 : SPEED_10; | |
1801 | cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ? | |
1802 | DUPLEX_FULL : DUPLEX_HALF; | |
1803 | cmd->port = 0; | |
1804 | cmd->phy_address = bp->phy_addr; | |
1805 | cmd->transceiver = (bp->flags & B44_FLAG_INTERNAL_PHY) ? | |
1806 | XCVR_INTERNAL : XCVR_EXTERNAL; | |
1807 | cmd->autoneg = (bp->flags & B44_FLAG_FORCE_LINK) ? | |
1808 | AUTONEG_DISABLE : AUTONEG_ENABLE; | |
47b9c3b1 GZ |
1809 | if (cmd->autoneg == AUTONEG_ENABLE) |
1810 | cmd->advertising |= ADVERTISED_Autoneg; | |
1811 | if (!netif_running(dev)){ | |
1812 | cmd->speed = 0; | |
1813 | cmd->duplex = 0xff; | |
1814 | } | |
1da177e4 LT |
1815 | cmd->maxtxpkt = 0; |
1816 | cmd->maxrxpkt = 0; | |
1817 | return 0; | |
1818 | } | |
1819 | ||
1820 | static int b44_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1821 | { | |
1822 | struct b44 *bp = netdev_priv(dev); | |
1823 | ||
1da177e4 LT |
1824 | /* We do not support gigabit. */ |
1825 | if (cmd->autoneg == AUTONEG_ENABLE) { | |
1826 | if (cmd->advertising & | |
1827 | (ADVERTISED_1000baseT_Half | | |
1828 | ADVERTISED_1000baseT_Full)) | |
1829 | return -EINVAL; | |
1830 | } else if ((cmd->speed != SPEED_100 && | |
1831 | cmd->speed != SPEED_10) || | |
1832 | (cmd->duplex != DUPLEX_HALF && | |
1833 | cmd->duplex != DUPLEX_FULL)) { | |
1834 | return -EINVAL; | |
1835 | } | |
1836 | ||
1837 | spin_lock_irq(&bp->lock); | |
1838 | ||
1839 | if (cmd->autoneg == AUTONEG_ENABLE) { | |
47b9c3b1 GZ |
1840 | bp->flags &= ~(B44_FLAG_FORCE_LINK | |
1841 | B44_FLAG_100_BASE_T | | |
1842 | B44_FLAG_FULL_DUPLEX | | |
1843 | B44_FLAG_ADV_10HALF | | |
1da177e4 LT |
1844 | B44_FLAG_ADV_10FULL | |
1845 | B44_FLAG_ADV_100HALF | | |
1846 | B44_FLAG_ADV_100FULL); | |
47b9c3b1 GZ |
1847 | if (cmd->advertising == 0) { |
1848 | bp->flags |= (B44_FLAG_ADV_10HALF | | |
1849 | B44_FLAG_ADV_10FULL | | |
1850 | B44_FLAG_ADV_100HALF | | |
1851 | B44_FLAG_ADV_100FULL); | |
1852 | } else { | |
1853 | if (cmd->advertising & ADVERTISED_10baseT_Half) | |
1854 | bp->flags |= B44_FLAG_ADV_10HALF; | |
1855 | if (cmd->advertising & ADVERTISED_10baseT_Full) | |
1856 | bp->flags |= B44_FLAG_ADV_10FULL; | |
1857 | if (cmd->advertising & ADVERTISED_100baseT_Half) | |
1858 | bp->flags |= B44_FLAG_ADV_100HALF; | |
1859 | if (cmd->advertising & ADVERTISED_100baseT_Full) | |
1860 | bp->flags |= B44_FLAG_ADV_100FULL; | |
1861 | } | |
1da177e4 LT |
1862 | } else { |
1863 | bp->flags |= B44_FLAG_FORCE_LINK; | |
47b9c3b1 | 1864 | bp->flags &= ~(B44_FLAG_100_BASE_T | B44_FLAG_FULL_DUPLEX); |
1da177e4 LT |
1865 | if (cmd->speed == SPEED_100) |
1866 | bp->flags |= B44_FLAG_100_BASE_T; | |
1867 | if (cmd->duplex == DUPLEX_FULL) | |
1868 | bp->flags |= B44_FLAG_FULL_DUPLEX; | |
1869 | } | |
1870 | ||
47b9c3b1 GZ |
1871 | if (netif_running(dev)) |
1872 | b44_setup_phy(bp); | |
1da177e4 LT |
1873 | |
1874 | spin_unlock_irq(&bp->lock); | |
1875 | ||
1876 | return 0; | |
1877 | } | |
1878 | ||
1879 | static void b44_get_ringparam(struct net_device *dev, | |
1880 | struct ethtool_ringparam *ering) | |
1881 | { | |
1882 | struct b44 *bp = netdev_priv(dev); | |
1883 | ||
1884 | ering->rx_max_pending = B44_RX_RING_SIZE - 1; | |
1885 | ering->rx_pending = bp->rx_pending; | |
1886 | ||
1887 | /* XXX ethtool lacks a tx_max_pending, oops... */ | |
1888 | } | |
1889 | ||
1890 | static int b44_set_ringparam(struct net_device *dev, | |
1891 | struct ethtool_ringparam *ering) | |
1892 | { | |
1893 | struct b44 *bp = netdev_priv(dev); | |
1894 | ||
1895 | if ((ering->rx_pending > B44_RX_RING_SIZE - 1) || | |
1896 | (ering->rx_mini_pending != 0) || | |
1897 | (ering->rx_jumbo_pending != 0) || | |
1898 | (ering->tx_pending > B44_TX_RING_SIZE - 1)) | |
1899 | return -EINVAL; | |
1900 | ||
1901 | spin_lock_irq(&bp->lock); | |
1902 | ||
1903 | bp->rx_pending = ering->rx_pending; | |
1904 | bp->tx_pending = ering->tx_pending; | |
1905 | ||
1906 | b44_halt(bp); | |
1907 | b44_init_rings(bp); | |
5fc7d61a | 1908 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
1909 | netif_wake_queue(bp->dev); |
1910 | spin_unlock_irq(&bp->lock); | |
1911 | ||
1912 | b44_enable_ints(bp); | |
10badc21 | 1913 | |
1da177e4 LT |
1914 | return 0; |
1915 | } | |
1916 | ||
1917 | static void b44_get_pauseparam(struct net_device *dev, | |
1918 | struct ethtool_pauseparam *epause) | |
1919 | { | |
1920 | struct b44 *bp = netdev_priv(dev); | |
1921 | ||
1922 | epause->autoneg = | |
1923 | (bp->flags & B44_FLAG_PAUSE_AUTO) != 0; | |
1924 | epause->rx_pause = | |
1925 | (bp->flags & B44_FLAG_RX_PAUSE) != 0; | |
1926 | epause->tx_pause = | |
1927 | (bp->flags & B44_FLAG_TX_PAUSE) != 0; | |
1928 | } | |
1929 | ||
1930 | static int b44_set_pauseparam(struct net_device *dev, | |
1931 | struct ethtool_pauseparam *epause) | |
1932 | { | |
1933 | struct b44 *bp = netdev_priv(dev); | |
1934 | ||
1935 | spin_lock_irq(&bp->lock); | |
1936 | if (epause->autoneg) | |
1937 | bp->flags |= B44_FLAG_PAUSE_AUTO; | |
1938 | else | |
1939 | bp->flags &= ~B44_FLAG_PAUSE_AUTO; | |
1940 | if (epause->rx_pause) | |
1941 | bp->flags |= B44_FLAG_RX_PAUSE; | |
1942 | else | |
1943 | bp->flags &= ~B44_FLAG_RX_PAUSE; | |
1944 | if (epause->tx_pause) | |
1945 | bp->flags |= B44_FLAG_TX_PAUSE; | |
1946 | else | |
1947 | bp->flags &= ~B44_FLAG_TX_PAUSE; | |
1948 | if (bp->flags & B44_FLAG_PAUSE_AUTO) { | |
1949 | b44_halt(bp); | |
1950 | b44_init_rings(bp); | |
5fc7d61a | 1951 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
1952 | } else { |
1953 | __b44_set_flow_ctrl(bp, bp->flags); | |
1954 | } | |
1955 | spin_unlock_irq(&bp->lock); | |
1956 | ||
1957 | b44_enable_ints(bp); | |
10badc21 | 1958 | |
1da177e4 LT |
1959 | return 0; |
1960 | } | |
1961 | ||
3353930d FR |
1962 | static void b44_get_strings(struct net_device *dev, u32 stringset, u8 *data) |
1963 | { | |
1964 | switch(stringset) { | |
1965 | case ETH_SS_STATS: | |
1966 | memcpy(data, *b44_gstrings, sizeof(b44_gstrings)); | |
1967 | break; | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | static int b44_get_stats_count(struct net_device *dev) | |
1972 | { | |
1973 | return ARRAY_SIZE(b44_gstrings); | |
1974 | } | |
1975 | ||
1976 | static void b44_get_ethtool_stats(struct net_device *dev, | |
1977 | struct ethtool_stats *stats, u64 *data) | |
1978 | { | |
1979 | struct b44 *bp = netdev_priv(dev); | |
1980 | u32 *val = &bp->hw_stats.tx_good_octets; | |
1981 | u32 i; | |
1982 | ||
1983 | spin_lock_irq(&bp->lock); | |
1984 | ||
1985 | b44_stats_update(bp); | |
1986 | ||
1987 | for (i = 0; i < ARRAY_SIZE(b44_gstrings); i++) | |
1988 | *data++ = *val++; | |
1989 | ||
1990 | spin_unlock_irq(&bp->lock); | |
1991 | } | |
1992 | ||
52cafd96 GZ |
1993 | static void b44_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) |
1994 | { | |
1995 | struct b44 *bp = netdev_priv(dev); | |
1996 | ||
1997 | wol->supported = WAKE_MAGIC; | |
1998 | if (bp->flags & B44_FLAG_WOL_ENABLE) | |
1999 | wol->wolopts = WAKE_MAGIC; | |
2000 | else | |
2001 | wol->wolopts = 0; | |
2002 | memset(&wol->sopass, 0, sizeof(wol->sopass)); | |
2003 | } | |
2004 | ||
2005 | static int b44_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) | |
2006 | { | |
2007 | struct b44 *bp = netdev_priv(dev); | |
2008 | ||
2009 | spin_lock_irq(&bp->lock); | |
2010 | if (wol->wolopts & WAKE_MAGIC) | |
2011 | bp->flags |= B44_FLAG_WOL_ENABLE; | |
2012 | else | |
2013 | bp->flags &= ~B44_FLAG_WOL_ENABLE; | |
2014 | spin_unlock_irq(&bp->lock); | |
2015 | ||
2016 | return 0; | |
2017 | } | |
2018 | ||
7282d491 | 2019 | static const struct ethtool_ops b44_ethtool_ops = { |
1da177e4 LT |
2020 | .get_drvinfo = b44_get_drvinfo, |
2021 | .get_settings = b44_get_settings, | |
2022 | .set_settings = b44_set_settings, | |
2023 | .nway_reset = b44_nway_reset, | |
2024 | .get_link = ethtool_op_get_link, | |
52cafd96 GZ |
2025 | .get_wol = b44_get_wol, |
2026 | .set_wol = b44_set_wol, | |
1da177e4 LT |
2027 | .get_ringparam = b44_get_ringparam, |
2028 | .set_ringparam = b44_set_ringparam, | |
2029 | .get_pauseparam = b44_get_pauseparam, | |
2030 | .set_pauseparam = b44_set_pauseparam, | |
2031 | .get_msglevel = b44_get_msglevel, | |
2032 | .set_msglevel = b44_set_msglevel, | |
3353930d FR |
2033 | .get_strings = b44_get_strings, |
2034 | .get_stats_count = b44_get_stats_count, | |
2035 | .get_ethtool_stats = b44_get_ethtool_stats, | |
2160de53 | 2036 | .get_perm_addr = ethtool_op_get_perm_addr, |
1da177e4 LT |
2037 | }; |
2038 | ||
2039 | static int b44_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
2040 | { | |
2041 | struct mii_ioctl_data *data = if_mii(ifr); | |
2042 | struct b44 *bp = netdev_priv(dev); | |
3410572d FR |
2043 | int err = -EINVAL; |
2044 | ||
2045 | if (!netif_running(dev)) | |
2046 | goto out; | |
1da177e4 LT |
2047 | |
2048 | spin_lock_irq(&bp->lock); | |
2049 | err = generic_mii_ioctl(&bp->mii_if, data, cmd, NULL); | |
2050 | spin_unlock_irq(&bp->lock); | |
3410572d | 2051 | out: |
1da177e4 LT |
2052 | return err; |
2053 | } | |
2054 | ||
2055 | /* Read 128-bytes of EEPROM. */ | |
2056 | static int b44_read_eeprom(struct b44 *bp, u8 *data) | |
2057 | { | |
2058 | long i; | |
a7bed27d | 2059 | __le16 *ptr = (__le16 *) data; |
1da177e4 LT |
2060 | |
2061 | for (i = 0; i < 128; i += 2) | |
6f627683 | 2062 | ptr[i / 2] = cpu_to_le16(readw(bp->regs + 4096 + i)); |
1da177e4 LT |
2063 | |
2064 | return 0; | |
2065 | } | |
2066 | ||
2067 | static int __devinit b44_get_invariants(struct b44 *bp) | |
2068 | { | |
2069 | u8 eeprom[128]; | |
2070 | int err; | |
2071 | ||
2072 | err = b44_read_eeprom(bp, &eeprom[0]); | |
2073 | if (err) | |
2074 | goto out; | |
2075 | ||
2076 | bp->dev->dev_addr[0] = eeprom[79]; | |
2077 | bp->dev->dev_addr[1] = eeprom[78]; | |
2078 | bp->dev->dev_addr[2] = eeprom[81]; | |
2079 | bp->dev->dev_addr[3] = eeprom[80]; | |
2080 | bp->dev->dev_addr[4] = eeprom[83]; | |
2081 | bp->dev->dev_addr[5] = eeprom[82]; | |
391fc09a GZ |
2082 | |
2083 | if (!is_valid_ether_addr(&bp->dev->dev_addr[0])){ | |
2084 | printk(KERN_ERR PFX "Invalid MAC address found in EEPROM\n"); | |
2085 | return -EINVAL; | |
2086 | } | |
2087 | ||
2160de53 | 2088 | memcpy(bp->dev->perm_addr, bp->dev->dev_addr, bp->dev->addr_len); |
1da177e4 LT |
2089 | |
2090 | bp->phy_addr = eeprom[90] & 0x1f; | |
2091 | ||
1da177e4 LT |
2092 | bp->imask = IMASK_DEF; |
2093 | ||
2094 | bp->core_unit = ssb_core_unit(bp); | |
2095 | bp->dma_offset = SB_PCI_DMA; | |
2096 | ||
10badc21 | 2097 | /* XXX - really required? |
1da177e4 LT |
2098 | bp->flags |= B44_FLAG_BUGGY_TXPTR; |
2099 | */ | |
52cafd96 GZ |
2100 | |
2101 | if (ssb_get_core_rev(bp) >= 7) | |
2102 | bp->flags |= B44_FLAG_B0_ANDLATER; | |
2103 | ||
1da177e4 LT |
2104 | out: |
2105 | return err; | |
2106 | } | |
2107 | ||
2108 | static int __devinit b44_init_one(struct pci_dev *pdev, | |
2109 | const struct pci_device_id *ent) | |
2110 | { | |
2111 | static int b44_version_printed = 0; | |
2112 | unsigned long b44reg_base, b44reg_len; | |
2113 | struct net_device *dev; | |
2114 | struct b44 *bp; | |
2115 | int err, i; | |
2116 | ||
2117 | if (b44_version_printed++ == 0) | |
2118 | printk(KERN_INFO "%s", version); | |
2119 | ||
2120 | err = pci_enable_device(pdev); | |
2121 | if (err) { | |
9b91cf9d | 2122 | dev_err(&pdev->dev, "Cannot enable PCI device, " |
1da177e4 LT |
2123 | "aborting.\n"); |
2124 | return err; | |
2125 | } | |
2126 | ||
2127 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
9b91cf9d | 2128 | dev_err(&pdev->dev, |
2e8a538d | 2129 | "Cannot find proper PCI device " |
1da177e4 LT |
2130 | "base address, aborting.\n"); |
2131 | err = -ENODEV; | |
2132 | goto err_out_disable_pdev; | |
2133 | } | |
2134 | ||
2135 | err = pci_request_regions(pdev, DRV_MODULE_NAME); | |
2136 | if (err) { | |
9b91cf9d | 2137 | dev_err(&pdev->dev, |
2e8a538d | 2138 | "Cannot obtain PCI resources, aborting.\n"); |
1da177e4 LT |
2139 | goto err_out_disable_pdev; |
2140 | } | |
2141 | ||
2142 | pci_set_master(pdev); | |
2143 | ||
97db9ee7 | 2144 | err = pci_set_dma_mask(pdev, (u64) DMA_30BIT_MASK); |
1da177e4 | 2145 | if (err) { |
9b91cf9d | 2146 | dev_err(&pdev->dev, "No usable DMA configuration, aborting.\n"); |
1da177e4 LT |
2147 | goto err_out_free_res; |
2148 | } | |
10badc21 | 2149 | |
97db9ee7 | 2150 | err = pci_set_consistent_dma_mask(pdev, (u64) DMA_30BIT_MASK); |
1da177e4 | 2151 | if (err) { |
9b91cf9d | 2152 | dev_err(&pdev->dev, "No usable DMA configuration, aborting.\n"); |
874a6214 | 2153 | goto err_out_free_res; |
1da177e4 LT |
2154 | } |
2155 | ||
2156 | b44reg_base = pci_resource_start(pdev, 0); | |
2157 | b44reg_len = pci_resource_len(pdev, 0); | |
2158 | ||
2159 | dev = alloc_etherdev(sizeof(*bp)); | |
2160 | if (!dev) { | |
9b91cf9d | 2161 | dev_err(&pdev->dev, "Etherdev alloc failed, aborting.\n"); |
1da177e4 LT |
2162 | err = -ENOMEM; |
2163 | goto err_out_free_res; | |
2164 | } | |
2165 | ||
2166 | SET_MODULE_OWNER(dev); | |
2167 | SET_NETDEV_DEV(dev,&pdev->dev); | |
2168 | ||
2169 | /* No interesting netdevice features in this card... */ | |
2170 | dev->features |= 0; | |
2171 | ||
2172 | bp = netdev_priv(dev); | |
2173 | bp->pdev = pdev; | |
2174 | bp->dev = dev; | |
874a6214 FR |
2175 | |
2176 | bp->msg_enable = netif_msg_init(b44_debug, B44_DEF_MSG_ENABLE); | |
1da177e4 LT |
2177 | |
2178 | spin_lock_init(&bp->lock); | |
2179 | ||
2180 | bp->regs = ioremap(b44reg_base, b44reg_len); | |
2181 | if (bp->regs == 0UL) { | |
9b91cf9d | 2182 | dev_err(&pdev->dev, "Cannot map device registers, aborting.\n"); |
1da177e4 LT |
2183 | err = -ENOMEM; |
2184 | goto err_out_free_dev; | |
2185 | } | |
2186 | ||
2187 | bp->rx_pending = B44_DEF_RX_RING_PENDING; | |
2188 | bp->tx_pending = B44_DEF_TX_RING_PENDING; | |
2189 | ||
2190 | dev->open = b44_open; | |
2191 | dev->stop = b44_close; | |
2192 | dev->hard_start_xmit = b44_start_xmit; | |
2193 | dev->get_stats = b44_get_stats; | |
2194 | dev->set_multicast_list = b44_set_rx_mode; | |
2195 | dev->set_mac_address = b44_set_mac_addr; | |
2196 | dev->do_ioctl = b44_ioctl; | |
2197 | dev->tx_timeout = b44_tx_timeout; | |
2198 | dev->poll = b44_poll; | |
2199 | dev->weight = 64; | |
2200 | dev->watchdog_timeo = B44_TX_TIMEOUT; | |
2201 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
2202 | dev->poll_controller = b44_poll_controller; | |
2203 | #endif | |
2204 | dev->change_mtu = b44_change_mtu; | |
2205 | dev->irq = pdev->irq; | |
2206 | SET_ETHTOOL_OPS(dev, &b44_ethtool_ops); | |
2207 | ||
c35ca399 SH |
2208 | netif_carrier_off(dev); |
2209 | ||
1da177e4 LT |
2210 | err = b44_get_invariants(bp); |
2211 | if (err) { | |
9b91cf9d | 2212 | dev_err(&pdev->dev, |
2e8a538d | 2213 | "Problem fetching invariants of chip, aborting.\n"); |
1da177e4 LT |
2214 | goto err_out_iounmap; |
2215 | } | |
2216 | ||
2217 | bp->mii_if.dev = dev; | |
2218 | bp->mii_if.mdio_read = b44_mii_read; | |
2219 | bp->mii_if.mdio_write = b44_mii_write; | |
2220 | bp->mii_if.phy_id = bp->phy_addr; | |
2221 | bp->mii_if.phy_id_mask = 0x1f; | |
2222 | bp->mii_if.reg_num_mask = 0x1f; | |
2223 | ||
2224 | /* By default, advertise all speed/duplex settings. */ | |
2225 | bp->flags |= (B44_FLAG_ADV_10HALF | B44_FLAG_ADV_10FULL | | |
2226 | B44_FLAG_ADV_100HALF | B44_FLAG_ADV_100FULL); | |
2227 | ||
2228 | /* By default, auto-negotiate PAUSE. */ | |
2229 | bp->flags |= B44_FLAG_PAUSE_AUTO; | |
2230 | ||
2231 | err = register_netdev(dev); | |
2232 | if (err) { | |
9b91cf9d | 2233 | dev_err(&pdev->dev, "Cannot register net device, aborting.\n"); |
1da177e4 LT |
2234 | goto err_out_iounmap; |
2235 | } | |
2236 | ||
2237 | pci_set_drvdata(pdev, dev); | |
2238 | ||
2239 | pci_save_state(bp->pdev); | |
2240 | ||
10badc21 | 2241 | /* Chip reset provides power to the b44 MAC & PCI cores, which |
5c513129 | 2242 | * is necessary for MAC register access. |
10badc21 | 2243 | */ |
5c513129 GZ |
2244 | b44_chip_reset(bp); |
2245 | ||
1da177e4 LT |
2246 | printk(KERN_INFO "%s: Broadcom 4400 10/100BaseT Ethernet ", dev->name); |
2247 | for (i = 0; i < 6; i++) | |
2248 | printk("%2.2x%c", dev->dev_addr[i], | |
2249 | i == 5 ? '\n' : ':'); | |
2250 | ||
2251 | return 0; | |
2252 | ||
2253 | err_out_iounmap: | |
2254 | iounmap(bp->regs); | |
2255 | ||
2256 | err_out_free_dev: | |
2257 | free_netdev(dev); | |
2258 | ||
2259 | err_out_free_res: | |
2260 | pci_release_regions(pdev); | |
2261 | ||
2262 | err_out_disable_pdev: | |
2263 | pci_disable_device(pdev); | |
2264 | pci_set_drvdata(pdev, NULL); | |
2265 | return err; | |
2266 | } | |
2267 | ||
2268 | static void __devexit b44_remove_one(struct pci_dev *pdev) | |
2269 | { | |
2270 | struct net_device *dev = pci_get_drvdata(pdev); | |
874a6214 | 2271 | struct b44 *bp = netdev_priv(dev); |
1da177e4 | 2272 | |
874a6214 FR |
2273 | unregister_netdev(dev); |
2274 | iounmap(bp->regs); | |
2275 | free_netdev(dev); | |
2276 | pci_release_regions(pdev); | |
2277 | pci_disable_device(pdev); | |
2278 | pci_set_drvdata(pdev, NULL); | |
1da177e4 LT |
2279 | } |
2280 | ||
2281 | static int b44_suspend(struct pci_dev *pdev, pm_message_t state) | |
2282 | { | |
2283 | struct net_device *dev = pci_get_drvdata(pdev); | |
2284 | struct b44 *bp = netdev_priv(dev); | |
2285 | ||
2286 | if (!netif_running(dev)) | |
2287 | return 0; | |
2288 | ||
2289 | del_timer_sync(&bp->timer); | |
2290 | ||
10badc21 | 2291 | spin_lock_irq(&bp->lock); |
1da177e4 LT |
2292 | |
2293 | b44_halt(bp); | |
10badc21 | 2294 | netif_carrier_off(bp->dev); |
1da177e4 LT |
2295 | netif_device_detach(bp->dev); |
2296 | b44_free_rings(bp); | |
2297 | ||
2298 | spin_unlock_irq(&bp->lock); | |
46e17853 PM |
2299 | |
2300 | free_irq(dev->irq, dev); | |
52cafd96 | 2301 | if (bp->flags & B44_FLAG_WOL_ENABLE) { |
5fc7d61a | 2302 | b44_init_hw(bp, B44_PARTIAL_RESET); |
52cafd96 GZ |
2303 | b44_setup_wol(bp); |
2304 | } | |
d58da590 | 2305 | pci_disable_device(pdev); |
1da177e4 LT |
2306 | return 0; |
2307 | } | |
2308 | ||
2309 | static int b44_resume(struct pci_dev *pdev) | |
2310 | { | |
2311 | struct net_device *dev = pci_get_drvdata(pdev); | |
2312 | struct b44 *bp = netdev_priv(dev); | |
90afd0e5 | 2313 | int rc = 0; |
1da177e4 LT |
2314 | |
2315 | pci_restore_state(pdev); | |
90afd0e5 DM |
2316 | rc = pci_enable_device(pdev); |
2317 | if (rc) { | |
2318 | printk(KERN_ERR PFX "%s: pci_enable_device failed\n", | |
2319 | dev->name); | |
2320 | return rc; | |
2321 | } | |
2322 | ||
d58da590 | 2323 | pci_set_master(pdev); |
1da177e4 LT |
2324 | |
2325 | if (!netif_running(dev)) | |
2326 | return 0; | |
2327 | ||
90afd0e5 DM |
2328 | rc = request_irq(dev->irq, b44_interrupt, IRQF_SHARED, dev->name, dev); |
2329 | if (rc) { | |
46e17853 | 2330 | printk(KERN_ERR PFX "%s: request_irq failed\n", dev->name); |
90afd0e5 DM |
2331 | pci_disable_device(pdev); |
2332 | return rc; | |
2333 | } | |
46e17853 | 2334 | |
1da177e4 LT |
2335 | spin_lock_irq(&bp->lock); |
2336 | ||
2337 | b44_init_rings(bp); | |
5fc7d61a | 2338 | b44_init_hw(bp, B44_FULL_RESET); |
1da177e4 LT |
2339 | netif_device_attach(bp->dev); |
2340 | spin_unlock_irq(&bp->lock); | |
2341 | ||
1da177e4 | 2342 | b44_enable_ints(bp); |
d9e2d185 | 2343 | netif_wake_queue(dev); |
a72a8179 SH |
2344 | |
2345 | mod_timer(&bp->timer, jiffies + 1); | |
2346 | ||
1da177e4 LT |
2347 | return 0; |
2348 | } | |
2349 | ||
2350 | static struct pci_driver b44_driver = { | |
2351 | .name = DRV_MODULE_NAME, | |
2352 | .id_table = b44_pci_tbl, | |
2353 | .probe = b44_init_one, | |
2354 | .remove = __devexit_p(b44_remove_one), | |
2355 | .suspend = b44_suspend, | |
2356 | .resume = b44_resume, | |
2357 | }; | |
2358 | ||
2359 | static int __init b44_init(void) | |
2360 | { | |
9f38c636 JL |
2361 | unsigned int dma_desc_align_size = dma_get_cache_alignment(); |
2362 | ||
2363 | /* Setup paramaters for syncing RX/TX DMA descriptors */ | |
2364 | dma_desc_align_mask = ~(dma_desc_align_size - 1); | |
22d4d771 | 2365 | dma_desc_sync_size = max_t(unsigned int, dma_desc_align_size, sizeof(struct dma_desc)); |
9f38c636 | 2366 | |
29917620 | 2367 | return pci_register_driver(&b44_driver); |
1da177e4 LT |
2368 | } |
2369 | ||
2370 | static void __exit b44_cleanup(void) | |
2371 | { | |
2372 | pci_unregister_driver(&b44_driver); | |
2373 | } | |
2374 | ||
2375 | module_init(b44_init); | |
2376 | module_exit(b44_cleanup); | |
2377 |