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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Network device driver for the BMAC ethernet controller on | |
3 | * Apple Powermacs. Assumes it's under a DBDMA controller. | |
4 | * | |
5 | * Copyright (C) 1998 Randy Gobbel. | |
6 | * | |
7 | * May 1999, Al Viro: proper release of /proc/net/bmac entry, switched to | |
8 | * dynamic procfs inode. | |
9 | */ | |
1da177e4 LT |
10 | #include <linux/module.h> |
11 | #include <linux/kernel.h> | |
12 | #include <linux/netdevice.h> | |
13 | #include <linux/etherdevice.h> | |
14 | #include <linux/delay.h> | |
15 | #include <linux/string.h> | |
16 | #include <linux/timer.h> | |
17 | #include <linux/proc_fs.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/spinlock.h> | |
20 | #include <linux/crc32.h> | |
bc63eb9c | 21 | #include <linux/bitrev.h> |
ced13330 | 22 | #include <linux/ethtool.h> |
1da177e4 LT |
23 | #include <asm/prom.h> |
24 | #include <asm/dbdma.h> | |
25 | #include <asm/io.h> | |
26 | #include <asm/page.h> | |
27 | #include <asm/pgtable.h> | |
28 | #include <asm/machdep.h> | |
29 | #include <asm/pmac_feature.h> | |
30 | #include <asm/macio.h> | |
31 | #include <asm/irq.h> | |
32 | ||
33 | #include "bmac.h" | |
34 | ||
35 | #define trunc_page(x) ((void *)(((unsigned long)(x)) & ~((unsigned long)(PAGE_SIZE - 1)))) | |
36 | #define round_page(x) trunc_page(((unsigned long)(x)) + ((unsigned long)(PAGE_SIZE - 1))) | |
37 | ||
38 | /* | |
39 | * CRC polynomial - used in working out multicast filter bits. | |
40 | */ | |
41 | #define ENET_CRCPOLY 0x04c11db7 | |
42 | ||
43 | /* switch to use multicast code lifted from sunhme driver */ | |
44 | #define SUNHME_MULTICAST | |
45 | ||
46 | #define N_RX_RING 64 | |
47 | #define N_TX_RING 32 | |
48 | #define MAX_TX_ACTIVE 1 | |
49 | #define ETHERCRC 4 | |
50 | #define ETHERMINPACKET 64 | |
51 | #define ETHERMTU 1500 | |
52 | #define RX_BUFLEN (ETHERMTU + 14 + ETHERCRC + 2) | |
53 | #define TX_TIMEOUT HZ /* 1 second */ | |
54 | ||
55 | /* Bits in transmit DMA status */ | |
56 | #define TX_DMA_ERR 0x80 | |
57 | ||
58 | #define XXDEBUG(args) | |
59 | ||
60 | struct bmac_data { | |
61 | /* volatile struct bmac *bmac; */ | |
62 | struct sk_buff_head *queue; | |
63 | volatile struct dbdma_regs __iomem *tx_dma; | |
64 | int tx_dma_intr; | |
65 | volatile struct dbdma_regs __iomem *rx_dma; | |
66 | int rx_dma_intr; | |
67 | volatile struct dbdma_cmd *tx_cmds; /* xmit dma command list */ | |
68 | volatile struct dbdma_cmd *rx_cmds; /* recv dma command list */ | |
69 | struct macio_dev *mdev; | |
70 | int is_bmac_plus; | |
71 | struct sk_buff *rx_bufs[N_RX_RING]; | |
72 | int rx_fill; | |
73 | int rx_empty; | |
74 | struct sk_buff *tx_bufs[N_TX_RING]; | |
75 | int tx_fill; | |
76 | int tx_empty; | |
77 | unsigned char tx_fullup; | |
1da177e4 LT |
78 | struct timer_list tx_timeout; |
79 | int timeout_active; | |
80 | int sleeping; | |
81 | int opened; | |
82 | unsigned short hash_use_count[64]; | |
83 | unsigned short hash_table_mask[4]; | |
84 | spinlock_t lock; | |
85 | }; | |
86 | ||
87 | #if 0 /* Move that to ethtool */ | |
88 | ||
89 | typedef struct bmac_reg_entry { | |
90 | char *name; | |
91 | unsigned short reg_offset; | |
92 | } bmac_reg_entry_t; | |
93 | ||
94 | #define N_REG_ENTRIES 31 | |
95 | ||
96 | static bmac_reg_entry_t reg_entries[N_REG_ENTRIES] = { | |
97 | {"MEMADD", MEMADD}, | |
98 | {"MEMDATAHI", MEMDATAHI}, | |
99 | {"MEMDATALO", MEMDATALO}, | |
100 | {"TXPNTR", TXPNTR}, | |
101 | {"RXPNTR", RXPNTR}, | |
102 | {"IPG1", IPG1}, | |
103 | {"IPG2", IPG2}, | |
104 | {"ALIMIT", ALIMIT}, | |
105 | {"SLOT", SLOT}, | |
106 | {"PALEN", PALEN}, | |
107 | {"PAPAT", PAPAT}, | |
108 | {"TXSFD", TXSFD}, | |
109 | {"JAM", JAM}, | |
110 | {"TXCFG", TXCFG}, | |
111 | {"TXMAX", TXMAX}, | |
112 | {"TXMIN", TXMIN}, | |
113 | {"PAREG", PAREG}, | |
114 | {"DCNT", DCNT}, | |
115 | {"NCCNT", NCCNT}, | |
116 | {"NTCNT", NTCNT}, | |
117 | {"EXCNT", EXCNT}, | |
118 | {"LTCNT", LTCNT}, | |
119 | {"TXSM", TXSM}, | |
120 | {"RXCFG", RXCFG}, | |
121 | {"RXMAX", RXMAX}, | |
122 | {"RXMIN", RXMIN}, | |
123 | {"FRCNT", FRCNT}, | |
124 | {"AECNT", AECNT}, | |
125 | {"FECNT", FECNT}, | |
126 | {"RXSM", RXSM}, | |
127 | {"RXCV", RXCV} | |
128 | }; | |
129 | ||
130 | #endif | |
131 | ||
132 | static unsigned char *bmac_emergency_rxbuf; | |
133 | ||
134 | /* | |
135 | * Number of bytes of private data per BMAC: allow enough for | |
136 | * the rx and tx dma commands plus a branch dma command each, | |
137 | * and another 16 bytes to allow us to align the dma command | |
138 | * buffers on a 16 byte boundary. | |
139 | */ | |
140 | #define PRIV_BYTES (sizeof(struct bmac_data) \ | |
141 | + (N_RX_RING + N_TX_RING + 4) * sizeof(struct dbdma_cmd) \ | |
142 | + sizeof(struct sk_buff_head)) | |
143 | ||
1da177e4 LT |
144 | static int bmac_open(struct net_device *dev); |
145 | static int bmac_close(struct net_device *dev); | |
146 | static int bmac_transmit_packet(struct sk_buff *skb, struct net_device *dev); | |
1da177e4 LT |
147 | static void bmac_set_multicast(struct net_device *dev); |
148 | static void bmac_reset_and_enable(struct net_device *dev); | |
149 | static void bmac_start_chip(struct net_device *dev); | |
150 | static void bmac_init_chip(struct net_device *dev); | |
151 | static void bmac_init_registers(struct net_device *dev); | |
152 | static void bmac_enable_and_reset_chip(struct net_device *dev); | |
153 | static int bmac_set_address(struct net_device *dev, void *addr); | |
7d12e780 DH |
154 | static irqreturn_t bmac_misc_intr(int irq, void *dev_id); |
155 | static irqreturn_t bmac_txdma_intr(int irq, void *dev_id); | |
156 | static irqreturn_t bmac_rxdma_intr(int irq, void *dev_id); | |
1da177e4 LT |
157 | static void bmac_set_timeout(struct net_device *dev); |
158 | static void bmac_tx_timeout(unsigned long data); | |
159 | static int bmac_output(struct sk_buff *skb, struct net_device *dev); | |
160 | static void bmac_start(struct net_device *dev); | |
161 | ||
162 | #define DBDMA_SET(x) ( ((x) | (x) << 16) ) | |
163 | #define DBDMA_CLEAR(x) ( (x) << 16) | |
164 | ||
165 | static inline void | |
166 | dbdma_st32(volatile __u32 __iomem *a, unsigned long x) | |
167 | { | |
168 | __asm__ volatile( "stwbrx %0,0,%1" : : "r" (x), "r" (a) : "memory"); | |
169 | return; | |
170 | } | |
171 | ||
172 | static inline unsigned long | |
173 | dbdma_ld32(volatile __u32 __iomem *a) | |
174 | { | |
175 | __u32 swap; | |
176 | __asm__ volatile ("lwbrx %0,0,%1" : "=r" (swap) : "r" (a)); | |
177 | return swap; | |
178 | } | |
179 | ||
180 | static void | |
181 | dbdma_continue(volatile struct dbdma_regs __iomem *dmap) | |
182 | { | |
183 | dbdma_st32(&dmap->control, | |
184 | DBDMA_SET(RUN|WAKE) | DBDMA_CLEAR(PAUSE|DEAD)); | |
185 | eieio(); | |
186 | } | |
187 | ||
188 | static void | |
189 | dbdma_reset(volatile struct dbdma_regs __iomem *dmap) | |
190 | { | |
191 | dbdma_st32(&dmap->control, | |
192 | DBDMA_CLEAR(ACTIVE|DEAD|WAKE|FLUSH|PAUSE|RUN)); | |
193 | eieio(); | |
194 | while (dbdma_ld32(&dmap->status) & RUN) | |
195 | eieio(); | |
196 | } | |
197 | ||
198 | static void | |
199 | dbdma_setcmd(volatile struct dbdma_cmd *cp, | |
200 | unsigned short cmd, unsigned count, unsigned long addr, | |
201 | unsigned long cmd_dep) | |
202 | { | |
203 | out_le16(&cp->command, cmd); | |
204 | out_le16(&cp->req_count, count); | |
205 | out_le32(&cp->phy_addr, addr); | |
206 | out_le32(&cp->cmd_dep, cmd_dep); | |
207 | out_le16(&cp->xfer_status, 0); | |
208 | out_le16(&cp->res_count, 0); | |
209 | } | |
210 | ||
211 | static inline | |
212 | void bmwrite(struct net_device *dev, unsigned long reg_offset, unsigned data ) | |
213 | { | |
214 | out_le16((void __iomem *)dev->base_addr + reg_offset, data); | |
215 | } | |
216 | ||
217 | ||
218 | static inline | |
66df3bbf | 219 | unsigned short bmread(struct net_device *dev, unsigned long reg_offset ) |
1da177e4 LT |
220 | { |
221 | return in_le16((void __iomem *)dev->base_addr + reg_offset); | |
222 | } | |
223 | ||
224 | static void | |
225 | bmac_enable_and_reset_chip(struct net_device *dev) | |
226 | { | |
227 | struct bmac_data *bp = netdev_priv(dev); | |
228 | volatile struct dbdma_regs __iomem *rd = bp->rx_dma; | |
229 | volatile struct dbdma_regs __iomem *td = bp->tx_dma; | |
230 | ||
231 | if (rd) | |
232 | dbdma_reset(rd); | |
233 | if (td) | |
234 | dbdma_reset(td); | |
235 | ||
236 | pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 1); | |
237 | } | |
238 | ||
239 | #define MIFDELAY udelay(10) | |
240 | ||
241 | static unsigned int | |
242 | bmac_mif_readbits(struct net_device *dev, int nb) | |
243 | { | |
244 | unsigned int val = 0; | |
245 | ||
246 | while (--nb >= 0) { | |
247 | bmwrite(dev, MIFCSR, 0); | |
248 | MIFDELAY; | |
249 | if (bmread(dev, MIFCSR) & 8) | |
250 | val |= 1 << nb; | |
251 | bmwrite(dev, MIFCSR, 1); | |
252 | MIFDELAY; | |
253 | } | |
254 | bmwrite(dev, MIFCSR, 0); | |
255 | MIFDELAY; | |
256 | bmwrite(dev, MIFCSR, 1); | |
257 | MIFDELAY; | |
258 | return val; | |
259 | } | |
260 | ||
261 | static void | |
262 | bmac_mif_writebits(struct net_device *dev, unsigned int val, int nb) | |
263 | { | |
264 | int b; | |
265 | ||
266 | while (--nb >= 0) { | |
267 | b = (val & (1 << nb))? 6: 4; | |
268 | bmwrite(dev, MIFCSR, b); | |
269 | MIFDELAY; | |
270 | bmwrite(dev, MIFCSR, b|1); | |
271 | MIFDELAY; | |
272 | } | |
273 | } | |
274 | ||
275 | static unsigned int | |
276 | bmac_mif_read(struct net_device *dev, unsigned int addr) | |
277 | { | |
278 | unsigned int val; | |
279 | ||
280 | bmwrite(dev, MIFCSR, 4); | |
281 | MIFDELAY; | |
282 | bmac_mif_writebits(dev, ~0U, 32); | |
283 | bmac_mif_writebits(dev, 6, 4); | |
284 | bmac_mif_writebits(dev, addr, 10); | |
285 | bmwrite(dev, MIFCSR, 2); | |
286 | MIFDELAY; | |
287 | bmwrite(dev, MIFCSR, 1); | |
288 | MIFDELAY; | |
289 | val = bmac_mif_readbits(dev, 17); | |
290 | bmwrite(dev, MIFCSR, 4); | |
291 | MIFDELAY; | |
292 | return val; | |
293 | } | |
294 | ||
295 | static void | |
296 | bmac_mif_write(struct net_device *dev, unsigned int addr, unsigned int val) | |
297 | { | |
298 | bmwrite(dev, MIFCSR, 4); | |
299 | MIFDELAY; | |
300 | bmac_mif_writebits(dev, ~0U, 32); | |
301 | bmac_mif_writebits(dev, 5, 4); | |
302 | bmac_mif_writebits(dev, addr, 10); | |
303 | bmac_mif_writebits(dev, 2, 2); | |
304 | bmac_mif_writebits(dev, val, 16); | |
305 | bmac_mif_writebits(dev, 3, 2); | |
306 | } | |
307 | ||
308 | static void | |
309 | bmac_init_registers(struct net_device *dev) | |
310 | { | |
311 | struct bmac_data *bp = netdev_priv(dev); | |
312 | volatile unsigned short regValue; | |
313 | unsigned short *pWord16; | |
314 | int i; | |
315 | ||
316 | /* XXDEBUG(("bmac: enter init_registers\n")); */ | |
317 | ||
318 | bmwrite(dev, RXRST, RxResetValue); | |
319 | bmwrite(dev, TXRST, TxResetBit); | |
320 | ||
321 | i = 100; | |
322 | do { | |
323 | --i; | |
324 | udelay(10000); | |
325 | regValue = bmread(dev, TXRST); /* wait for reset to clear..acknowledge */ | |
326 | } while ((regValue & TxResetBit) && i > 0); | |
327 | ||
328 | if (!bp->is_bmac_plus) { | |
329 | regValue = bmread(dev, XCVRIF); | |
330 | regValue |= ClkBit | SerialMode | COLActiveLow; | |
331 | bmwrite(dev, XCVRIF, regValue); | |
332 | udelay(10000); | |
333 | } | |
334 | ||
6aa20a22 | 335 | bmwrite(dev, RSEED, (unsigned short)0x1968); |
1da177e4 LT |
336 | |
337 | regValue = bmread(dev, XIFC); | |
338 | regValue |= TxOutputEnable; | |
339 | bmwrite(dev, XIFC, regValue); | |
340 | ||
341 | bmread(dev, PAREG); | |
342 | ||
343 | /* set collision counters to 0 */ | |
344 | bmwrite(dev, NCCNT, 0); | |
345 | bmwrite(dev, NTCNT, 0); | |
346 | bmwrite(dev, EXCNT, 0); | |
347 | bmwrite(dev, LTCNT, 0); | |
348 | ||
349 | /* set rx counters to 0 */ | |
350 | bmwrite(dev, FRCNT, 0); | |
351 | bmwrite(dev, LECNT, 0); | |
352 | bmwrite(dev, AECNT, 0); | |
353 | bmwrite(dev, FECNT, 0); | |
354 | bmwrite(dev, RXCV, 0); | |
355 | ||
356 | /* set tx fifo information */ | |
357 | bmwrite(dev, TXTH, 4); /* 4 octets before tx starts */ | |
358 | ||
359 | bmwrite(dev, TXFIFOCSR, 0); /* first disable txFIFO */ | |
360 | bmwrite(dev, TXFIFOCSR, TxFIFOEnable ); | |
361 | ||
362 | /* set rx fifo information */ | |
363 | bmwrite(dev, RXFIFOCSR, 0); /* first disable rxFIFO */ | |
364 | bmwrite(dev, RXFIFOCSR, RxFIFOEnable ); | |
365 | ||
366 | //bmwrite(dev, TXCFG, TxMACEnable); /* TxNeverGiveUp maybe later */ | |
367 | bmread(dev, STATUS); /* read it just to clear it */ | |
368 | ||
369 | /* zero out the chip Hash Filter registers */ | |
370 | for (i=0; i<4; i++) bp->hash_table_mask[i] = 0; | |
371 | bmwrite(dev, BHASH3, bp->hash_table_mask[0]); /* bits 15 - 0 */ | |
372 | bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */ | |
373 | bmwrite(dev, BHASH1, bp->hash_table_mask[2]); /* bits 47 - 32 */ | |
374 | bmwrite(dev, BHASH0, bp->hash_table_mask[3]); /* bits 63 - 48 */ | |
6aa20a22 | 375 | |
1da177e4 LT |
376 | pWord16 = (unsigned short *)dev->dev_addr; |
377 | bmwrite(dev, MADD0, *pWord16++); | |
378 | bmwrite(dev, MADD1, *pWord16++); | |
379 | bmwrite(dev, MADD2, *pWord16); | |
380 | ||
381 | bmwrite(dev, RXCFG, RxCRCNoStrip | RxHashFilterEnable | RxRejectOwnPackets); | |
382 | ||
383 | bmwrite(dev, INTDISABLE, EnableNormal); | |
384 | ||
385 | return; | |
386 | } | |
387 | ||
388 | #if 0 | |
389 | static void | |
390 | bmac_disable_interrupts(struct net_device *dev) | |
391 | { | |
392 | bmwrite(dev, INTDISABLE, DisableAll); | |
393 | } | |
394 | ||
395 | static void | |
396 | bmac_enable_interrupts(struct net_device *dev) | |
397 | { | |
398 | bmwrite(dev, INTDISABLE, EnableNormal); | |
399 | } | |
400 | #endif | |
401 | ||
402 | ||
403 | static void | |
404 | bmac_start_chip(struct net_device *dev) | |
405 | { | |
406 | struct bmac_data *bp = netdev_priv(dev); | |
407 | volatile struct dbdma_regs __iomem *rd = bp->rx_dma; | |
408 | unsigned short oldConfig; | |
409 | ||
410 | /* enable rx dma channel */ | |
411 | dbdma_continue(rd); | |
412 | ||
6aa20a22 | 413 | oldConfig = bmread(dev, TXCFG); |
1da177e4 LT |
414 | bmwrite(dev, TXCFG, oldConfig | TxMACEnable ); |
415 | ||
416 | /* turn on rx plus any other bits already on (promiscuous possibly) */ | |
6aa20a22 | 417 | oldConfig = bmread(dev, RXCFG); |
1da177e4 LT |
418 | bmwrite(dev, RXCFG, oldConfig | RxMACEnable ); |
419 | udelay(20000); | |
420 | } | |
421 | ||
422 | static void | |
423 | bmac_init_phy(struct net_device *dev) | |
424 | { | |
425 | unsigned int addr; | |
426 | struct bmac_data *bp = netdev_priv(dev); | |
427 | ||
428 | printk(KERN_DEBUG "phy registers:"); | |
429 | for (addr = 0; addr < 32; ++addr) { | |
430 | if ((addr & 7) == 0) | |
431 | printk("\n" KERN_DEBUG); | |
432 | printk(" %.4x", bmac_mif_read(dev, addr)); | |
433 | } | |
434 | printk("\n"); | |
435 | if (bp->is_bmac_plus) { | |
436 | unsigned int capable, ctrl; | |
437 | ||
438 | ctrl = bmac_mif_read(dev, 0); | |
439 | capable = ((bmac_mif_read(dev, 1) & 0xf800) >> 6) | 1; | |
440 | if (bmac_mif_read(dev, 4) != capable | |
441 | || (ctrl & 0x1000) == 0) { | |
442 | bmac_mif_write(dev, 4, capable); | |
443 | bmac_mif_write(dev, 0, 0x1200); | |
444 | } else | |
445 | bmac_mif_write(dev, 0, 0x1000); | |
446 | } | |
447 | } | |
448 | ||
449 | static void bmac_init_chip(struct net_device *dev) | |
450 | { | |
451 | bmac_init_phy(dev); | |
452 | bmac_init_registers(dev); | |
453 | } | |
454 | ||
455 | #ifdef CONFIG_PM | |
05adc3b7 | 456 | static int bmac_suspend(struct macio_dev *mdev, pm_message_t state) |
1da177e4 | 457 | { |
6aa20a22 | 458 | struct net_device* dev = macio_get_drvdata(mdev); |
1da177e4 LT |
459 | struct bmac_data *bp = netdev_priv(dev); |
460 | unsigned long flags; | |
461 | unsigned short config; | |
462 | int i; | |
6aa20a22 | 463 | |
1da177e4 LT |
464 | netif_device_detach(dev); |
465 | /* prolly should wait for dma to finish & turn off the chip */ | |
466 | spin_lock_irqsave(&bp->lock, flags); | |
467 | if (bp->timeout_active) { | |
468 | del_timer(&bp->tx_timeout); | |
469 | bp->timeout_active = 0; | |
470 | } | |
471 | disable_irq(dev->irq); | |
472 | disable_irq(bp->tx_dma_intr); | |
473 | disable_irq(bp->rx_dma_intr); | |
474 | bp->sleeping = 1; | |
475 | spin_unlock_irqrestore(&bp->lock, flags); | |
476 | if (bp->opened) { | |
477 | volatile struct dbdma_regs __iomem *rd = bp->rx_dma; | |
478 | volatile struct dbdma_regs __iomem *td = bp->tx_dma; | |
6aa20a22 | 479 | |
1da177e4 LT |
480 | config = bmread(dev, RXCFG); |
481 | bmwrite(dev, RXCFG, (config & ~RxMACEnable)); | |
482 | config = bmread(dev, TXCFG); | |
483 | bmwrite(dev, TXCFG, (config & ~TxMACEnable)); | |
484 | bmwrite(dev, INTDISABLE, DisableAll); /* disable all intrs */ | |
485 | /* disable rx and tx dma */ | |
486 | st_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */ | |
487 | st_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */ | |
488 | /* free some skb's */ | |
489 | for (i=0; i<N_RX_RING; i++) { | |
490 | if (bp->rx_bufs[i] != NULL) { | |
491 | dev_kfree_skb(bp->rx_bufs[i]); | |
492 | bp->rx_bufs[i] = NULL; | |
493 | } | |
494 | } | |
495 | for (i = 0; i<N_TX_RING; i++) { | |
496 | if (bp->tx_bufs[i] != NULL) { | |
497 | dev_kfree_skb(bp->tx_bufs[i]); | |
498 | bp->tx_bufs[i] = NULL; | |
499 | } | |
500 | } | |
501 | } | |
502 | pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0); | |
503 | return 0; | |
504 | } | |
505 | ||
506 | static int bmac_resume(struct macio_dev *mdev) | |
507 | { | |
6aa20a22 | 508 | struct net_device* dev = macio_get_drvdata(mdev); |
1da177e4 LT |
509 | struct bmac_data *bp = netdev_priv(dev); |
510 | ||
511 | /* see if this is enough */ | |
512 | if (bp->opened) | |
513 | bmac_reset_and_enable(dev); | |
514 | ||
515 | enable_irq(dev->irq); | |
516 | enable_irq(bp->tx_dma_intr); | |
517 | enable_irq(bp->rx_dma_intr); | |
518 | netif_device_attach(dev); | |
519 | ||
520 | return 0; | |
521 | } | |
522 | #endif /* CONFIG_PM */ | |
523 | ||
524 | static int bmac_set_address(struct net_device *dev, void *addr) | |
525 | { | |
526 | struct bmac_data *bp = netdev_priv(dev); | |
527 | unsigned char *p = addr; | |
528 | unsigned short *pWord16; | |
529 | unsigned long flags; | |
530 | int i; | |
531 | ||
532 | XXDEBUG(("bmac: enter set_address\n")); | |
533 | spin_lock_irqsave(&bp->lock, flags); | |
534 | ||
535 | for (i = 0; i < 6; ++i) { | |
536 | dev->dev_addr[i] = p[i]; | |
537 | } | |
538 | /* load up the hardware address */ | |
539 | pWord16 = (unsigned short *)dev->dev_addr; | |
540 | bmwrite(dev, MADD0, *pWord16++); | |
541 | bmwrite(dev, MADD1, *pWord16++); | |
542 | bmwrite(dev, MADD2, *pWord16); | |
543 | ||
544 | spin_unlock_irqrestore(&bp->lock, flags); | |
545 | XXDEBUG(("bmac: exit set_address\n")); | |
546 | return 0; | |
547 | } | |
548 | ||
549 | static inline void bmac_set_timeout(struct net_device *dev) | |
550 | { | |
551 | struct bmac_data *bp = netdev_priv(dev); | |
552 | unsigned long flags; | |
553 | ||
554 | spin_lock_irqsave(&bp->lock, flags); | |
555 | if (bp->timeout_active) | |
556 | del_timer(&bp->tx_timeout); | |
557 | bp->tx_timeout.expires = jiffies + TX_TIMEOUT; | |
558 | bp->tx_timeout.function = bmac_tx_timeout; | |
559 | bp->tx_timeout.data = (unsigned long) dev; | |
560 | add_timer(&bp->tx_timeout); | |
561 | bp->timeout_active = 1; | |
562 | spin_unlock_irqrestore(&bp->lock, flags); | |
563 | } | |
564 | ||
565 | static void | |
566 | bmac_construct_xmt(struct sk_buff *skb, volatile struct dbdma_cmd *cp) | |
567 | { | |
568 | void *vaddr; | |
569 | unsigned long baddr; | |
570 | unsigned long len; | |
571 | ||
572 | len = skb->len; | |
573 | vaddr = skb->data; | |
574 | baddr = virt_to_bus(vaddr); | |
575 | ||
576 | dbdma_setcmd(cp, (OUTPUT_LAST | INTR_ALWAYS | WAIT_IFCLR), len, baddr, 0); | |
577 | } | |
578 | ||
579 | static void | |
580 | bmac_construct_rxbuff(struct sk_buff *skb, volatile struct dbdma_cmd *cp) | |
581 | { | |
582 | unsigned char *addr = skb? skb->data: bmac_emergency_rxbuf; | |
583 | ||
584 | dbdma_setcmd(cp, (INPUT_LAST | INTR_ALWAYS), RX_BUFLEN, | |
585 | virt_to_bus(addr), 0); | |
586 | } | |
587 | ||
1da177e4 LT |
588 | static void |
589 | bmac_init_tx_ring(struct bmac_data *bp) | |
590 | { | |
591 | volatile struct dbdma_regs __iomem *td = bp->tx_dma; | |
592 | ||
593 | memset((char *)bp->tx_cmds, 0, (N_TX_RING+1) * sizeof(struct dbdma_cmd)); | |
594 | ||
595 | bp->tx_empty = 0; | |
596 | bp->tx_fill = 0; | |
597 | bp->tx_fullup = 0; | |
598 | ||
599 | /* put a branch at the end of the tx command list */ | |
600 | dbdma_setcmd(&bp->tx_cmds[N_TX_RING], | |
601 | (DBDMA_NOP | BR_ALWAYS), 0, 0, virt_to_bus(bp->tx_cmds)); | |
602 | ||
603 | /* reset tx dma */ | |
604 | dbdma_reset(td); | |
605 | out_le32(&td->wait_sel, 0x00200020); | |
606 | out_le32(&td->cmdptr, virt_to_bus(bp->tx_cmds)); | |
607 | } | |
608 | ||
609 | static int | |
610 | bmac_init_rx_ring(struct bmac_data *bp) | |
611 | { | |
612 | volatile struct dbdma_regs __iomem *rd = bp->rx_dma; | |
613 | int i; | |
614 | struct sk_buff *skb; | |
615 | ||
616 | /* initialize list of sk_buffs for receiving and set up recv dma */ | |
617 | memset((char *)bp->rx_cmds, 0, | |
618 | (N_RX_RING + 1) * sizeof(struct dbdma_cmd)); | |
619 | for (i = 0; i < N_RX_RING; i++) { | |
620 | if ((skb = bp->rx_bufs[i]) == NULL) { | |
621 | bp->rx_bufs[i] = skb = dev_alloc_skb(RX_BUFLEN+2); | |
622 | if (skb != NULL) | |
623 | skb_reserve(skb, 2); | |
624 | } | |
625 | bmac_construct_rxbuff(skb, &bp->rx_cmds[i]); | |
626 | } | |
627 | ||
628 | bp->rx_empty = 0; | |
629 | bp->rx_fill = i; | |
630 | ||
631 | /* Put a branch back to the beginning of the receive command list */ | |
632 | dbdma_setcmd(&bp->rx_cmds[N_RX_RING], | |
633 | (DBDMA_NOP | BR_ALWAYS), 0, 0, virt_to_bus(bp->rx_cmds)); | |
634 | ||
635 | /* start rx dma */ | |
636 | dbdma_reset(rd); | |
637 | out_le32(&rd->cmdptr, virt_to_bus(bp->rx_cmds)); | |
638 | ||
639 | return 1; | |
640 | } | |
641 | ||
642 | ||
643 | static int bmac_transmit_packet(struct sk_buff *skb, struct net_device *dev) | |
644 | { | |
645 | struct bmac_data *bp = netdev_priv(dev); | |
646 | volatile struct dbdma_regs __iomem *td = bp->tx_dma; | |
647 | int i; | |
648 | ||
649 | /* see if there's a free slot in the tx ring */ | |
650 | /* XXDEBUG(("bmac_xmit_start: empty=%d fill=%d\n", */ | |
651 | /* bp->tx_empty, bp->tx_fill)); */ | |
652 | i = bp->tx_fill + 1; | |
653 | if (i >= N_TX_RING) | |
654 | i = 0; | |
655 | if (i == bp->tx_empty) { | |
656 | netif_stop_queue(dev); | |
657 | bp->tx_fullup = 1; | |
658 | XXDEBUG(("bmac_transmit_packet: tx ring full\n")); | |
659 | return -1; /* can't take it at the moment */ | |
660 | } | |
661 | ||
662 | dbdma_setcmd(&bp->tx_cmds[i], DBDMA_STOP, 0, 0, 0); | |
663 | ||
664 | bmac_construct_xmt(skb, &bp->tx_cmds[bp->tx_fill]); | |
665 | ||
666 | bp->tx_bufs[bp->tx_fill] = skb; | |
667 | bp->tx_fill = i; | |
668 | ||
09f75cd7 | 669 | dev->stats.tx_bytes += skb->len; |
1da177e4 LT |
670 | |
671 | dbdma_continue(td); | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
676 | static int rxintcount; | |
677 | ||
7d12e780 | 678 | static irqreturn_t bmac_rxdma_intr(int irq, void *dev_id) |
1da177e4 LT |
679 | { |
680 | struct net_device *dev = (struct net_device *) dev_id; | |
681 | struct bmac_data *bp = netdev_priv(dev); | |
682 | volatile struct dbdma_regs __iomem *rd = bp->rx_dma; | |
683 | volatile struct dbdma_cmd *cp; | |
684 | int i, nb, stat; | |
685 | struct sk_buff *skb; | |
686 | unsigned int residual; | |
687 | int last; | |
688 | unsigned long flags; | |
689 | ||
690 | spin_lock_irqsave(&bp->lock, flags); | |
691 | ||
692 | if (++rxintcount < 10) { | |
693 | XXDEBUG(("bmac_rxdma_intr\n")); | |
694 | } | |
695 | ||
696 | last = -1; | |
697 | i = bp->rx_empty; | |
698 | ||
699 | while (1) { | |
700 | cp = &bp->rx_cmds[i]; | |
701 | stat = ld_le16(&cp->xfer_status); | |
702 | residual = ld_le16(&cp->res_count); | |
703 | if ((stat & ACTIVE) == 0) | |
704 | break; | |
705 | nb = RX_BUFLEN - residual - 2; | |
706 | if (nb < (ETHERMINPACKET - ETHERCRC)) { | |
707 | skb = NULL; | |
09f75cd7 JG |
708 | dev->stats.rx_length_errors++; |
709 | dev->stats.rx_errors++; | |
1da177e4 LT |
710 | } else { |
711 | skb = bp->rx_bufs[i]; | |
712 | bp->rx_bufs[i] = NULL; | |
713 | } | |
714 | if (skb != NULL) { | |
715 | nb -= ETHERCRC; | |
716 | skb_put(skb, nb); | |
1da177e4 LT |
717 | skb->protocol = eth_type_trans(skb, dev); |
718 | netif_rx(skb); | |
09f75cd7 JG |
719 | ++dev->stats.rx_packets; |
720 | dev->stats.rx_bytes += nb; | |
1da177e4 | 721 | } else { |
09f75cd7 | 722 | ++dev->stats.rx_dropped; |
1da177e4 | 723 | } |
1da177e4 LT |
724 | if ((skb = bp->rx_bufs[i]) == NULL) { |
725 | bp->rx_bufs[i] = skb = dev_alloc_skb(RX_BUFLEN+2); | |
726 | if (skb != NULL) | |
727 | skb_reserve(bp->rx_bufs[i], 2); | |
728 | } | |
729 | bmac_construct_rxbuff(skb, &bp->rx_cmds[i]); | |
730 | st_le16(&cp->res_count, 0); | |
731 | st_le16(&cp->xfer_status, 0); | |
732 | last = i; | |
733 | if (++i >= N_RX_RING) i = 0; | |
734 | } | |
735 | ||
736 | if (last != -1) { | |
737 | bp->rx_fill = last; | |
738 | bp->rx_empty = i; | |
739 | } | |
740 | ||
741 | dbdma_continue(rd); | |
742 | spin_unlock_irqrestore(&bp->lock, flags); | |
743 | ||
744 | if (rxintcount < 10) { | |
745 | XXDEBUG(("bmac_rxdma_intr done\n")); | |
746 | } | |
747 | return IRQ_HANDLED; | |
748 | } | |
749 | ||
750 | static int txintcount; | |
751 | ||
7d12e780 | 752 | static irqreturn_t bmac_txdma_intr(int irq, void *dev_id) |
1da177e4 LT |
753 | { |
754 | struct net_device *dev = (struct net_device *) dev_id; | |
755 | struct bmac_data *bp = netdev_priv(dev); | |
756 | volatile struct dbdma_cmd *cp; | |
757 | int stat; | |
758 | unsigned long flags; | |
759 | ||
760 | spin_lock_irqsave(&bp->lock, flags); | |
761 | ||
762 | if (txintcount++ < 10) { | |
763 | XXDEBUG(("bmac_txdma_intr\n")); | |
764 | } | |
765 | ||
766 | /* del_timer(&bp->tx_timeout); */ | |
767 | /* bp->timeout_active = 0; */ | |
768 | ||
769 | while (1) { | |
770 | cp = &bp->tx_cmds[bp->tx_empty]; | |
771 | stat = ld_le16(&cp->xfer_status); | |
772 | if (txintcount < 10) { | |
773 | XXDEBUG(("bmac_txdma_xfer_stat=%#0x\n", stat)); | |
774 | } | |
775 | if (!(stat & ACTIVE)) { | |
776 | /* | |
777 | * status field might not have been filled by DBDMA | |
778 | */ | |
779 | if (cp == bus_to_virt(in_le32(&bp->tx_dma->cmdptr))) | |
780 | break; | |
781 | } | |
782 | ||
783 | if (bp->tx_bufs[bp->tx_empty]) { | |
09f75cd7 | 784 | ++dev->stats.tx_packets; |
1da177e4 LT |
785 | dev_kfree_skb_irq(bp->tx_bufs[bp->tx_empty]); |
786 | } | |
787 | bp->tx_bufs[bp->tx_empty] = NULL; | |
788 | bp->tx_fullup = 0; | |
789 | netif_wake_queue(dev); | |
790 | if (++bp->tx_empty >= N_TX_RING) | |
791 | bp->tx_empty = 0; | |
792 | if (bp->tx_empty == bp->tx_fill) | |
793 | break; | |
794 | } | |
795 | ||
796 | spin_unlock_irqrestore(&bp->lock, flags); | |
797 | ||
798 | if (txintcount < 10) { | |
799 | XXDEBUG(("bmac_txdma_intr done->bmac_start\n")); | |
800 | } | |
801 | ||
802 | bmac_start(dev); | |
803 | return IRQ_HANDLED; | |
804 | } | |
805 | ||
1da177e4 LT |
806 | #ifndef SUNHME_MULTICAST |
807 | /* Real fast bit-reversal algorithm, 6-bit values */ | |
808 | static int reverse6[64] = { | |
809 | 0x0,0x20,0x10,0x30,0x8,0x28,0x18,0x38, | |
810 | 0x4,0x24,0x14,0x34,0xc,0x2c,0x1c,0x3c, | |
811 | 0x2,0x22,0x12,0x32,0xa,0x2a,0x1a,0x3a, | |
812 | 0x6,0x26,0x16,0x36,0xe,0x2e,0x1e,0x3e, | |
813 | 0x1,0x21,0x11,0x31,0x9,0x29,0x19,0x39, | |
814 | 0x5,0x25,0x15,0x35,0xd,0x2d,0x1d,0x3d, | |
815 | 0x3,0x23,0x13,0x33,0xb,0x2b,0x1b,0x3b, | |
816 | 0x7,0x27,0x17,0x37,0xf,0x2f,0x1f,0x3f | |
817 | }; | |
818 | ||
819 | static unsigned int | |
820 | crc416(unsigned int curval, unsigned short nxtval) | |
821 | { | |
822 | register unsigned int counter, cur = curval, next = nxtval; | |
823 | register int high_crc_set, low_data_set; | |
824 | ||
825 | /* Swap bytes */ | |
826 | next = ((next & 0x00FF) << 8) | (next >> 8); | |
827 | ||
828 | /* Compute bit-by-bit */ | |
829 | for (counter = 0; counter < 16; ++counter) { | |
830 | /* is high CRC bit set? */ | |
831 | if ((cur & 0x80000000) == 0) high_crc_set = 0; | |
832 | else high_crc_set = 1; | |
833 | ||
834 | cur = cur << 1; | |
6aa20a22 | 835 | |
1da177e4 LT |
836 | if ((next & 0x0001) == 0) low_data_set = 0; |
837 | else low_data_set = 1; | |
838 | ||
839 | next = next >> 1; | |
6aa20a22 | 840 | |
1da177e4 LT |
841 | /* do the XOR */ |
842 | if (high_crc_set ^ low_data_set) cur = cur ^ ENET_CRCPOLY; | |
843 | } | |
844 | return cur; | |
845 | } | |
846 | ||
847 | static unsigned int | |
848 | bmac_crc(unsigned short *address) | |
6aa20a22 | 849 | { |
1da177e4 LT |
850 | unsigned int newcrc; |
851 | ||
852 | XXDEBUG(("bmac_crc: addr=%#04x, %#04x, %#04x\n", *address, address[1], address[2])); | |
853 | newcrc = crc416(0xffffffff, *address); /* address bits 47 - 32 */ | |
854 | newcrc = crc416(newcrc, address[1]); /* address bits 31 - 16 */ | |
855 | newcrc = crc416(newcrc, address[2]); /* address bits 15 - 0 */ | |
856 | ||
857 | return(newcrc); | |
858 | } | |
859 | ||
860 | /* | |
861 | * Add requested mcast addr to BMac's hash table filter. | |
862 | * | |
863 | */ | |
864 | ||
865 | static void | |
866 | bmac_addhash(struct bmac_data *bp, unsigned char *addr) | |
6aa20a22 | 867 | { |
1da177e4 LT |
868 | unsigned int crc; |
869 | unsigned short mask; | |
870 | ||
871 | if (!(*addr)) return; | |
872 | crc = bmac_crc((unsigned short *)addr) & 0x3f; /* Big-endian alert! */ | |
873 | crc = reverse6[crc]; /* Hyperfast bit-reversing algorithm */ | |
874 | if (bp->hash_use_count[crc]++) return; /* This bit is already set */ | |
875 | mask = crc % 16; | |
876 | mask = (unsigned char)1 << mask; | |
877 | bp->hash_use_count[crc/16] |= mask; | |
878 | } | |
879 | ||
880 | static void | |
881 | bmac_removehash(struct bmac_data *bp, unsigned char *addr) | |
6aa20a22 | 882 | { |
1da177e4 LT |
883 | unsigned int crc; |
884 | unsigned char mask; | |
885 | ||
886 | /* Now, delete the address from the filter copy, as indicated */ | |
887 | crc = bmac_crc((unsigned short *)addr) & 0x3f; /* Big-endian alert! */ | |
888 | crc = reverse6[crc]; /* Hyperfast bit-reversing algorithm */ | |
889 | if (bp->hash_use_count[crc] == 0) return; /* That bit wasn't in use! */ | |
890 | if (--bp->hash_use_count[crc]) return; /* That bit is still in use */ | |
891 | mask = crc % 16; | |
892 | mask = ((unsigned char)1 << mask) ^ 0xffff; /* To turn off bit */ | |
893 | bp->hash_table_mask[crc/16] &= mask; | |
894 | } | |
895 | ||
896 | /* | |
897 | * Sync the adapter with the software copy of the multicast mask | |
898 | * (logical address filter). | |
899 | */ | |
900 | ||
901 | static void | |
902 | bmac_rx_off(struct net_device *dev) | |
903 | { | |
904 | unsigned short rx_cfg; | |
905 | ||
906 | rx_cfg = bmread(dev, RXCFG); | |
907 | rx_cfg &= ~RxMACEnable; | |
908 | bmwrite(dev, RXCFG, rx_cfg); | |
909 | do { | |
910 | rx_cfg = bmread(dev, RXCFG); | |
911 | } while (rx_cfg & RxMACEnable); | |
912 | } | |
913 | ||
914 | unsigned short | |
915 | bmac_rx_on(struct net_device *dev, int hash_enable, int promisc_enable) | |
916 | { | |
917 | unsigned short rx_cfg; | |
918 | ||
919 | rx_cfg = bmread(dev, RXCFG); | |
920 | rx_cfg |= RxMACEnable; | |
921 | if (hash_enable) rx_cfg |= RxHashFilterEnable; | |
922 | else rx_cfg &= ~RxHashFilterEnable; | |
923 | if (promisc_enable) rx_cfg |= RxPromiscEnable; | |
924 | else rx_cfg &= ~RxPromiscEnable; | |
925 | bmwrite(dev, RXRST, RxResetValue); | |
926 | bmwrite(dev, RXFIFOCSR, 0); /* first disable rxFIFO */ | |
927 | bmwrite(dev, RXFIFOCSR, RxFIFOEnable ); | |
928 | bmwrite(dev, RXCFG, rx_cfg ); | |
929 | return rx_cfg; | |
930 | } | |
931 | ||
932 | static void | |
933 | bmac_update_hash_table_mask(struct net_device *dev, struct bmac_data *bp) | |
934 | { | |
935 | bmwrite(dev, BHASH3, bp->hash_table_mask[0]); /* bits 15 - 0 */ | |
936 | bmwrite(dev, BHASH2, bp->hash_table_mask[1]); /* bits 31 - 16 */ | |
937 | bmwrite(dev, BHASH1, bp->hash_table_mask[2]); /* bits 47 - 32 */ | |
938 | bmwrite(dev, BHASH0, bp->hash_table_mask[3]); /* bits 63 - 48 */ | |
939 | } | |
940 | ||
941 | #if 0 | |
942 | static void | |
943 | bmac_add_multi(struct net_device *dev, | |
944 | struct bmac_data *bp, unsigned char *addr) | |
945 | { | |
946 | /* XXDEBUG(("bmac: enter bmac_add_multi\n")); */ | |
947 | bmac_addhash(bp, addr); | |
948 | bmac_rx_off(dev); | |
949 | bmac_update_hash_table_mask(dev, bp); | |
950 | bmac_rx_on(dev, 1, (dev->flags & IFF_PROMISC)? 1 : 0); | |
951 | /* XXDEBUG(("bmac: exit bmac_add_multi\n")); */ | |
952 | } | |
953 | ||
954 | static void | |
955 | bmac_remove_multi(struct net_device *dev, | |
956 | struct bmac_data *bp, unsigned char *addr) | |
957 | { | |
958 | bmac_removehash(bp, addr); | |
959 | bmac_rx_off(dev); | |
960 | bmac_update_hash_table_mask(dev, bp); | |
961 | bmac_rx_on(dev, 1, (dev->flags & IFF_PROMISC)? 1 : 0); | |
962 | } | |
963 | #endif | |
964 | ||
965 | /* Set or clear the multicast filter for this adaptor. | |
966 | num_addrs == -1 Promiscuous mode, receive all packets | |
967 | num_addrs == 0 Normal mode, clear multicast list | |
968 | num_addrs > 0 Multicast mode, receive normal and MC packets, and do | |
969 | best-effort filtering. | |
970 | */ | |
971 | static void bmac_set_multicast(struct net_device *dev) | |
972 | { | |
973 | struct dev_mc_list *dmi; | |
974 | struct bmac_data *bp = netdev_priv(dev); | |
975 | int num_addrs = dev->mc_count; | |
976 | unsigned short rx_cfg; | |
977 | int i; | |
978 | ||
979 | if (bp->sleeping) | |
980 | return; | |
981 | ||
982 | XXDEBUG(("bmac: enter bmac_set_multicast, n_addrs=%d\n", num_addrs)); | |
983 | ||
984 | if((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 64)) { | |
985 | for (i=0; i<4; i++) bp->hash_table_mask[i] = 0xffff; | |
986 | bmac_update_hash_table_mask(dev, bp); | |
987 | rx_cfg = bmac_rx_on(dev, 1, 0); | |
988 | XXDEBUG(("bmac: all multi, rx_cfg=%#08x\n")); | |
989 | } else if ((dev->flags & IFF_PROMISC) || (num_addrs < 0)) { | |
990 | rx_cfg = bmread(dev, RXCFG); | |
991 | rx_cfg |= RxPromiscEnable; | |
992 | bmwrite(dev, RXCFG, rx_cfg); | |
993 | rx_cfg = bmac_rx_on(dev, 0, 1); | |
994 | XXDEBUG(("bmac: promisc mode enabled, rx_cfg=%#08x\n", rx_cfg)); | |
995 | } else { | |
996 | for (i=0; i<4; i++) bp->hash_table_mask[i] = 0; | |
997 | for (i=0; i<64; i++) bp->hash_use_count[i] = 0; | |
998 | if (num_addrs == 0) { | |
999 | rx_cfg = bmac_rx_on(dev, 0, 0); | |
1000 | XXDEBUG(("bmac: multi disabled, rx_cfg=%#08x\n", rx_cfg)); | |
1001 | } else { | |
1002 | for (dmi=dev->mc_list; dmi!=NULL; dmi=dmi->next) | |
1003 | bmac_addhash(bp, dmi->dmi_addr); | |
1004 | bmac_update_hash_table_mask(dev, bp); | |
1005 | rx_cfg = bmac_rx_on(dev, 1, 0); | |
1006 | XXDEBUG(("bmac: multi enabled, rx_cfg=%#08x\n", rx_cfg)); | |
1007 | } | |
1008 | } | |
1009 | /* XXDEBUG(("bmac: exit bmac_set_multicast\n")); */ | |
1010 | } | |
1011 | #else /* ifdef SUNHME_MULTICAST */ | |
1012 | ||
1013 | /* The version of set_multicast below was lifted from sunhme.c */ | |
1014 | ||
1015 | static void bmac_set_multicast(struct net_device *dev) | |
1016 | { | |
1017 | struct dev_mc_list *dmi = dev->mc_list; | |
1018 | char *addrs; | |
1019 | int i; | |
1020 | unsigned short rx_cfg; | |
1021 | u32 crc; | |
1022 | ||
1023 | if((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 64)) { | |
1024 | bmwrite(dev, BHASH0, 0xffff); | |
1025 | bmwrite(dev, BHASH1, 0xffff); | |
1026 | bmwrite(dev, BHASH2, 0xffff); | |
1027 | bmwrite(dev, BHASH3, 0xffff); | |
1028 | } else if(dev->flags & IFF_PROMISC) { | |
1029 | rx_cfg = bmread(dev, RXCFG); | |
1030 | rx_cfg |= RxPromiscEnable; | |
1031 | bmwrite(dev, RXCFG, rx_cfg); | |
1032 | } else { | |
1033 | u16 hash_table[4]; | |
6aa20a22 | 1034 | |
1da177e4 LT |
1035 | rx_cfg = bmread(dev, RXCFG); |
1036 | rx_cfg &= ~RxPromiscEnable; | |
1037 | bmwrite(dev, RXCFG, rx_cfg); | |
1038 | ||
1039 | for(i = 0; i < 4; i++) hash_table[i] = 0; | |
6aa20a22 | 1040 | |
1da177e4 LT |
1041 | for(i = 0; i < dev->mc_count; i++) { |
1042 | addrs = dmi->dmi_addr; | |
1043 | dmi = dmi->next; | |
1044 | ||
1045 | if(!(*addrs & 1)) | |
1046 | continue; | |
1047 | ||
1048 | crc = ether_crc_le(6, addrs); | |
1049 | crc >>= 26; | |
1050 | hash_table[crc >> 4] |= 1 << (crc & 0xf); | |
1051 | } | |
1052 | bmwrite(dev, BHASH0, hash_table[0]); | |
1053 | bmwrite(dev, BHASH1, hash_table[1]); | |
1054 | bmwrite(dev, BHASH2, hash_table[2]); | |
1055 | bmwrite(dev, BHASH3, hash_table[3]); | |
1056 | } | |
1057 | } | |
1058 | #endif /* SUNHME_MULTICAST */ | |
1059 | ||
1060 | static int miscintcount; | |
1061 | ||
7d12e780 | 1062 | static irqreturn_t bmac_misc_intr(int irq, void *dev_id) |
1da177e4 LT |
1063 | { |
1064 | struct net_device *dev = (struct net_device *) dev_id; | |
1da177e4 LT |
1065 | unsigned int status = bmread(dev, STATUS); |
1066 | if (miscintcount++ < 10) { | |
1067 | XXDEBUG(("bmac_misc_intr\n")); | |
1068 | } | |
1069 | /* XXDEBUG(("bmac_misc_intr, status=%#08x\n", status)); */ | |
7d12e780 | 1070 | /* bmac_txdma_intr_inner(irq, dev_id); */ |
09f75cd7 JG |
1071 | /* if (status & FrameReceived) dev->stats.rx_dropped++; */ |
1072 | if (status & RxErrorMask) dev->stats.rx_errors++; | |
1073 | if (status & RxCRCCntExp) dev->stats.rx_crc_errors++; | |
1074 | if (status & RxLenCntExp) dev->stats.rx_length_errors++; | |
1075 | if (status & RxOverFlow) dev->stats.rx_over_errors++; | |
1076 | if (status & RxAlignCntExp) dev->stats.rx_frame_errors++; | |
1077 | ||
1078 | /* if (status & FrameSent) dev->stats.tx_dropped++; */ | |
1079 | if (status & TxErrorMask) dev->stats.tx_errors++; | |
1080 | if (status & TxUnderrun) dev->stats.tx_fifo_errors++; | |
1081 | if (status & TxNormalCollExp) dev->stats.collisions++; | |
1da177e4 LT |
1082 | return IRQ_HANDLED; |
1083 | } | |
1084 | ||
1085 | /* | |
1086 | * Procedure for reading EEPROM | |
1087 | */ | |
1088 | #define SROMAddressLength 5 | |
1089 | #define DataInOn 0x0008 | |
1090 | #define DataInOff 0x0000 | |
1091 | #define Clk 0x0002 | |
1092 | #define ChipSelect 0x0001 | |
1093 | #define SDIShiftCount 3 | |
1094 | #define SD0ShiftCount 2 | |
1095 | #define DelayValue 1000 /* number of microseconds */ | |
1096 | #define SROMStartOffset 10 /* this is in words */ | |
1097 | #define SROMReadCount 3 /* number of words to read from SROM */ | |
1098 | #define SROMAddressBits 6 | |
1099 | #define EnetAddressOffset 20 | |
1100 | ||
1101 | static unsigned char | |
1102 | bmac_clock_out_bit(struct net_device *dev) | |
1103 | { | |
1104 | unsigned short data; | |
1105 | unsigned short val; | |
1106 | ||
1107 | bmwrite(dev, SROMCSR, ChipSelect | Clk); | |
1108 | udelay(DelayValue); | |
1109 | ||
1110 | data = bmread(dev, SROMCSR); | |
1111 | udelay(DelayValue); | |
1112 | val = (data >> SD0ShiftCount) & 1; | |
1113 | ||
1114 | bmwrite(dev, SROMCSR, ChipSelect); | |
1115 | udelay(DelayValue); | |
1116 | ||
1117 | return val; | |
1118 | } | |
1119 | ||
1120 | static void | |
1121 | bmac_clock_in_bit(struct net_device *dev, unsigned int val) | |
1122 | { | |
1123 | unsigned short data; | |
1124 | ||
1125 | if (val != 0 && val != 1) return; | |
1126 | ||
1127 | data = (val << SDIShiftCount); | |
1128 | bmwrite(dev, SROMCSR, data | ChipSelect ); | |
1129 | udelay(DelayValue); | |
1130 | ||
1131 | bmwrite(dev, SROMCSR, data | ChipSelect | Clk ); | |
1132 | udelay(DelayValue); | |
1133 | ||
1134 | bmwrite(dev, SROMCSR, data | ChipSelect); | |
1135 | udelay(DelayValue); | |
1136 | } | |
1137 | ||
1138 | static void | |
1139 | reset_and_select_srom(struct net_device *dev) | |
1140 | { | |
1141 | /* first reset */ | |
1142 | bmwrite(dev, SROMCSR, 0); | |
1143 | udelay(DelayValue); | |
1144 | ||
1145 | /* send it the read command (110) */ | |
1146 | bmac_clock_in_bit(dev, 1); | |
1147 | bmac_clock_in_bit(dev, 1); | |
1148 | bmac_clock_in_bit(dev, 0); | |
1149 | } | |
1150 | ||
1151 | static unsigned short | |
1152 | read_srom(struct net_device *dev, unsigned int addr, unsigned int addr_len) | |
1153 | { | |
1154 | unsigned short data, val; | |
1155 | int i; | |
1156 | ||
1157 | /* send out the address we want to read from */ | |
1158 | for (i = 0; i < addr_len; i++) { | |
1159 | val = addr >> (addr_len-i-1); | |
1160 | bmac_clock_in_bit(dev, val & 1); | |
1161 | } | |
1162 | ||
1163 | /* Now read in the 16-bit data */ | |
1164 | data = 0; | |
1165 | for (i = 0; i < 16; i++) { | |
1166 | val = bmac_clock_out_bit(dev); | |
1167 | data <<= 1; | |
1168 | data |= val; | |
1169 | } | |
1170 | bmwrite(dev, SROMCSR, 0); | |
1171 | ||
1172 | return data; | |
1173 | } | |
1174 | ||
1175 | /* | |
1176 | * It looks like Cogent and SMC use different methods for calculating | |
1177 | * checksums. What a pain.. | |
1178 | */ | |
1179 | ||
1180 | static int | |
1181 | bmac_verify_checksum(struct net_device *dev) | |
1182 | { | |
1183 | unsigned short data, storedCS; | |
1184 | ||
1185 | reset_and_select_srom(dev); | |
1186 | data = read_srom(dev, 3, SROMAddressBits); | |
1187 | storedCS = ((data >> 8) & 0x0ff) | ((data << 8) & 0xff00); | |
1188 | ||
1189 | return 0; | |
1190 | } | |
1191 | ||
1192 | ||
1193 | static void | |
1194 | bmac_get_station_address(struct net_device *dev, unsigned char *ea) | |
1195 | { | |
1196 | int i; | |
1197 | unsigned short data; | |
1198 | ||
6aa20a22 | 1199 | for (i = 0; i < 6; i++) |
1da177e4 LT |
1200 | { |
1201 | reset_and_select_srom(dev); | |
1202 | data = read_srom(dev, i + EnetAddressOffset/2, SROMAddressBits); | |
bc63eb9c AM |
1203 | ea[2*i] = bitrev8(data & 0x0ff); |
1204 | ea[2*i+1] = bitrev8((data >> 8) & 0x0ff); | |
1da177e4 LT |
1205 | } |
1206 | } | |
1207 | ||
1208 | static void bmac_reset_and_enable(struct net_device *dev) | |
1209 | { | |
1210 | struct bmac_data *bp = netdev_priv(dev); | |
1211 | unsigned long flags; | |
1212 | struct sk_buff *skb; | |
1213 | unsigned char *data; | |
1214 | ||
1215 | spin_lock_irqsave(&bp->lock, flags); | |
1216 | bmac_enable_and_reset_chip(dev); | |
1217 | bmac_init_tx_ring(bp); | |
1218 | bmac_init_rx_ring(bp); | |
1219 | bmac_init_chip(dev); | |
1220 | bmac_start_chip(dev); | |
1221 | bmwrite(dev, INTDISABLE, EnableNormal); | |
1222 | bp->sleeping = 0; | |
6aa20a22 | 1223 | |
1da177e4 LT |
1224 | /* |
1225 | * It seems that the bmac can't receive until it's transmitted | |
1226 | * a packet. So we give it a dummy packet to transmit. | |
1227 | */ | |
1228 | skb = dev_alloc_skb(ETHERMINPACKET); | |
1229 | if (skb != NULL) { | |
1230 | data = skb_put(skb, ETHERMINPACKET); | |
1231 | memset(data, 0, ETHERMINPACKET); | |
1232 | memcpy(data, dev->dev_addr, 6); | |
1233 | memcpy(data+6, dev->dev_addr, 6); | |
1234 | bmac_transmit_packet(skb, dev); | |
1235 | } | |
1236 | spin_unlock_irqrestore(&bp->lock, flags); | |
1237 | } | |
ced13330 OH |
1238 | static void bmac_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
1239 | { | |
1240 | struct bmac_data *bp = netdev_priv(dev); | |
1241 | strcpy(info->driver, "bmac"); | |
db1d7bf7 | 1242 | strcpy(info->bus_info, dev_name(&bp->mdev->ofdev.dev)); |
ced13330 OH |
1243 | } |
1244 | ||
1245 | static const struct ethtool_ops bmac_ethtool_ops = { | |
1246 | .get_drvinfo = bmac_get_drvinfo, | |
1247 | .get_link = ethtool_op_get_link, | |
1248 | }; | |
1da177e4 | 1249 | |
5e655772 | 1250 | static int __devinit bmac_probe(struct macio_dev *mdev, const struct of_device_id *match) |
1da177e4 LT |
1251 | { |
1252 | int j, rev, ret; | |
1253 | struct bmac_data *bp; | |
1a2509c9 JK |
1254 | const unsigned char *prop_addr; |
1255 | unsigned char addr[6]; | |
1da177e4 LT |
1256 | struct net_device *dev; |
1257 | int is_bmac_plus = ((int)match->data) != 0; | |
1258 | ||
1259 | if (macio_resource_count(mdev) != 3 || macio_irq_count(mdev) != 3) { | |
1260 | printk(KERN_ERR "BMAC: can't use, need 3 addrs and 3 intrs\n"); | |
1261 | return -ENODEV; | |
1262 | } | |
40cd3a45 SR |
1263 | prop_addr = of_get_property(macio_get_of_node(mdev), |
1264 | "mac-address", NULL); | |
1a2509c9 | 1265 | if (prop_addr == NULL) { |
40cd3a45 | 1266 | prop_addr = of_get_property(macio_get_of_node(mdev), |
1a2509c9 JK |
1267 | "local-mac-address", NULL); |
1268 | if (prop_addr == NULL) { | |
1da177e4 LT |
1269 | printk(KERN_ERR "BMAC: Can't get mac-address\n"); |
1270 | return -ENODEV; | |
1271 | } | |
1272 | } | |
1a2509c9 | 1273 | memcpy(addr, prop_addr, sizeof(addr)); |
1da177e4 LT |
1274 | |
1275 | dev = alloc_etherdev(PRIV_BYTES); | |
1276 | if (!dev) { | |
1277 | printk(KERN_ERR "BMAC: alloc_etherdev failed, out of memory\n"); | |
1278 | return -ENOMEM; | |
1279 | } | |
6aa20a22 | 1280 | |
1da177e4 | 1281 | bp = netdev_priv(dev); |
1da177e4 LT |
1282 | SET_NETDEV_DEV(dev, &mdev->ofdev.dev); |
1283 | macio_set_drvdata(mdev, dev); | |
1284 | ||
1285 | bp->mdev = mdev; | |
1286 | spin_lock_init(&bp->lock); | |
1287 | ||
1288 | if (macio_request_resources(mdev, "bmac")) { | |
1289 | printk(KERN_ERR "BMAC: can't request IO resource !\n"); | |
1290 | goto out_free; | |
1291 | } | |
1292 | ||
1293 | dev->base_addr = (unsigned long) | |
1294 | ioremap(macio_resource_start(mdev, 0), macio_resource_len(mdev, 0)); | |
1295 | if (dev->base_addr == 0) | |
1296 | goto out_release; | |
1297 | ||
1298 | dev->irq = macio_irq(mdev, 0); | |
1299 | ||
1300 | bmac_enable_and_reset_chip(dev); | |
1301 | bmwrite(dev, INTDISABLE, DisableAll); | |
1302 | ||
1303 | rev = addr[0] == 0 && addr[1] == 0xA0; | |
1304 | for (j = 0; j < 6; ++j) | |
bc63eb9c | 1305 | dev->dev_addr[j] = rev ? bitrev8(addr[j]): addr[j]; |
1da177e4 LT |
1306 | |
1307 | /* Enable chip without interrupts for now */ | |
1308 | bmac_enable_and_reset_chip(dev); | |
1309 | bmwrite(dev, INTDISABLE, DisableAll); | |
1310 | ||
1311 | dev->open = bmac_open; | |
1312 | dev->stop = bmac_close; | |
ced13330 | 1313 | dev->ethtool_ops = &bmac_ethtool_ops; |
1da177e4 | 1314 | dev->hard_start_xmit = bmac_output; |
1da177e4 LT |
1315 | dev->set_multicast_list = bmac_set_multicast; |
1316 | dev->set_mac_address = bmac_set_address; | |
1317 | ||
1318 | bmac_get_station_address(dev, addr); | |
1319 | if (bmac_verify_checksum(dev) != 0) | |
1320 | goto err_out_iounmap; | |
1321 | ||
1322 | bp->is_bmac_plus = is_bmac_plus; | |
1323 | bp->tx_dma = ioremap(macio_resource_start(mdev, 1), macio_resource_len(mdev, 1)); | |
1324 | if (!bp->tx_dma) | |
1325 | goto err_out_iounmap; | |
1326 | bp->tx_dma_intr = macio_irq(mdev, 1); | |
1327 | bp->rx_dma = ioremap(macio_resource_start(mdev, 2), macio_resource_len(mdev, 2)); | |
1328 | if (!bp->rx_dma) | |
1329 | goto err_out_iounmap_tx; | |
1330 | bp->rx_dma_intr = macio_irq(mdev, 2); | |
1331 | ||
1332 | bp->tx_cmds = (volatile struct dbdma_cmd *) DBDMA_ALIGN(bp + 1); | |
1333 | bp->rx_cmds = bp->tx_cmds + N_TX_RING + 1; | |
1334 | ||
1335 | bp->queue = (struct sk_buff_head *)(bp->rx_cmds + N_RX_RING + 1); | |
1336 | skb_queue_head_init(bp->queue); | |
1337 | ||
1338 | init_timer(&bp->tx_timeout); | |
1339 | ||
1340 | ret = request_irq(dev->irq, bmac_misc_intr, 0, "BMAC-misc", dev); | |
1341 | if (ret) { | |
1342 | printk(KERN_ERR "BMAC: can't get irq %d\n", dev->irq); | |
1343 | goto err_out_iounmap_rx; | |
1344 | } | |
1345 | ret = request_irq(bp->tx_dma_intr, bmac_txdma_intr, 0, "BMAC-txdma", dev); | |
1346 | if (ret) { | |
1347 | printk(KERN_ERR "BMAC: can't get irq %d\n", bp->tx_dma_intr); | |
1348 | goto err_out_irq0; | |
1349 | } | |
1350 | ret = request_irq(bp->rx_dma_intr, bmac_rxdma_intr, 0, "BMAC-rxdma", dev); | |
1351 | if (ret) { | |
1352 | printk(KERN_ERR "BMAC: can't get irq %d\n", bp->rx_dma_intr); | |
1353 | goto err_out_irq1; | |
1354 | } | |
1355 | ||
1356 | /* Mask chip interrupts and disable chip, will be | |
1357 | * re-enabled on open() | |
1358 | */ | |
1359 | disable_irq(dev->irq); | |
1360 | pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0); | |
1361 | ||
1362 | if (register_netdev(dev) != 0) { | |
1363 | printk(KERN_ERR "BMAC: Ethernet registration failed\n"); | |
1364 | goto err_out_irq2; | |
1365 | } | |
1366 | ||
e174961c JB |
1367 | printk(KERN_INFO "%s: BMAC%s at %pM", |
1368 | dev->name, (is_bmac_plus ? "+" : ""), dev->dev_addr); | |
1da177e4 LT |
1369 | XXDEBUG((", base_addr=%#0lx", dev->base_addr)); |
1370 | printk("\n"); | |
6aa20a22 | 1371 | |
1da177e4 LT |
1372 | return 0; |
1373 | ||
1374 | err_out_irq2: | |
1375 | free_irq(bp->rx_dma_intr, dev); | |
1376 | err_out_irq1: | |
1377 | free_irq(bp->tx_dma_intr, dev); | |
1378 | err_out_irq0: | |
1379 | free_irq(dev->irq, dev); | |
1380 | err_out_iounmap_rx: | |
1381 | iounmap(bp->rx_dma); | |
1382 | err_out_iounmap_tx: | |
1383 | iounmap(bp->tx_dma); | |
1384 | err_out_iounmap: | |
1385 | iounmap((void __iomem *)dev->base_addr); | |
1386 | out_release: | |
1387 | macio_release_resources(mdev); | |
1388 | out_free: | |
1389 | pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0); | |
1390 | free_netdev(dev); | |
1391 | ||
1392 | return -ENODEV; | |
1393 | } | |
1394 | ||
1395 | static int bmac_open(struct net_device *dev) | |
1396 | { | |
1397 | struct bmac_data *bp = netdev_priv(dev); | |
1398 | /* XXDEBUG(("bmac: enter open\n")); */ | |
1399 | /* reset the chip */ | |
1400 | bp->opened = 1; | |
1401 | bmac_reset_and_enable(dev); | |
1402 | enable_irq(dev->irq); | |
1da177e4 LT |
1403 | return 0; |
1404 | } | |
1405 | ||
1406 | static int bmac_close(struct net_device *dev) | |
1407 | { | |
1408 | struct bmac_data *bp = netdev_priv(dev); | |
1409 | volatile struct dbdma_regs __iomem *rd = bp->rx_dma; | |
1410 | volatile struct dbdma_regs __iomem *td = bp->tx_dma; | |
1411 | unsigned short config; | |
1412 | int i; | |
1413 | ||
1414 | bp->sleeping = 1; | |
1da177e4 LT |
1415 | |
1416 | /* disable rx and tx */ | |
1417 | config = bmread(dev, RXCFG); | |
1418 | bmwrite(dev, RXCFG, (config & ~RxMACEnable)); | |
1419 | ||
1420 | config = bmread(dev, TXCFG); | |
1421 | bmwrite(dev, TXCFG, (config & ~TxMACEnable)); | |
1422 | ||
1423 | bmwrite(dev, INTDISABLE, DisableAll); /* disable all intrs */ | |
1424 | ||
1425 | /* disable rx and tx dma */ | |
1426 | st_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */ | |
1427 | st_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE)); /* clear run bit */ | |
1428 | ||
1429 | /* free some skb's */ | |
1430 | XXDEBUG(("bmac: free rx bufs\n")); | |
1431 | for (i=0; i<N_RX_RING; i++) { | |
1432 | if (bp->rx_bufs[i] != NULL) { | |
1433 | dev_kfree_skb(bp->rx_bufs[i]); | |
1434 | bp->rx_bufs[i] = NULL; | |
1435 | } | |
1436 | } | |
1437 | XXDEBUG(("bmac: free tx bufs\n")); | |
1438 | for (i = 0; i<N_TX_RING; i++) { | |
1439 | if (bp->tx_bufs[i] != NULL) { | |
1440 | dev_kfree_skb(bp->tx_bufs[i]); | |
1441 | bp->tx_bufs[i] = NULL; | |
1442 | } | |
1443 | } | |
1444 | XXDEBUG(("bmac: all bufs freed\n")); | |
1445 | ||
1446 | bp->opened = 0; | |
1447 | disable_irq(dev->irq); | |
1448 | pmac_call_feature(PMAC_FTR_BMAC_ENABLE, macio_get_of_node(bp->mdev), 0, 0); | |
1449 | ||
1450 | return 0; | |
1451 | } | |
1452 | ||
1453 | static void | |
1454 | bmac_start(struct net_device *dev) | |
1455 | { | |
1456 | struct bmac_data *bp = netdev_priv(dev); | |
1457 | int i; | |
1458 | struct sk_buff *skb; | |
1459 | unsigned long flags; | |
1460 | ||
1461 | if (bp->sleeping) | |
1462 | return; | |
6aa20a22 | 1463 | |
1da177e4 LT |
1464 | spin_lock_irqsave(&bp->lock, flags); |
1465 | while (1) { | |
1466 | i = bp->tx_fill + 1; | |
1467 | if (i >= N_TX_RING) | |
1468 | i = 0; | |
1469 | if (i == bp->tx_empty) | |
1470 | break; | |
1471 | skb = skb_dequeue(bp->queue); | |
1472 | if (skb == NULL) | |
1473 | break; | |
1474 | bmac_transmit_packet(skb, dev); | |
1475 | } | |
1476 | spin_unlock_irqrestore(&bp->lock, flags); | |
1477 | } | |
1478 | ||
1479 | static int | |
1480 | bmac_output(struct sk_buff *skb, struct net_device *dev) | |
1481 | { | |
1482 | struct bmac_data *bp = netdev_priv(dev); | |
1483 | skb_queue_tail(bp->queue, skb); | |
1484 | bmac_start(dev); | |
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | static void bmac_tx_timeout(unsigned long data) | |
1489 | { | |
1490 | struct net_device *dev = (struct net_device *) data; | |
1491 | struct bmac_data *bp = netdev_priv(dev); | |
1492 | volatile struct dbdma_regs __iomem *td = bp->tx_dma; | |
1493 | volatile struct dbdma_regs __iomem *rd = bp->rx_dma; | |
1494 | volatile struct dbdma_cmd *cp; | |
1495 | unsigned long flags; | |
1496 | unsigned short config, oldConfig; | |
1497 | int i; | |
1498 | ||
1499 | XXDEBUG(("bmac: tx_timeout called\n")); | |
1500 | spin_lock_irqsave(&bp->lock, flags); | |
1501 | bp->timeout_active = 0; | |
1502 | ||
1503 | /* update various counters */ | |
1504 | /* bmac_handle_misc_intrs(bp, 0); */ | |
1505 | ||
1506 | cp = &bp->tx_cmds[bp->tx_empty]; | |
1507 | /* XXDEBUG((KERN_DEBUG "bmac: tx dmastat=%x %x runt=%d pr=%x fs=%x fc=%x\n", */ | |
1508 | /* ld_le32(&td->status), ld_le16(&cp->xfer_status), bp->tx_bad_runt, */ | |
1509 | /* mb->pr, mb->xmtfs, mb->fifofc)); */ | |
1510 | ||
1511 | /* turn off both tx and rx and reset the chip */ | |
1512 | config = bmread(dev, RXCFG); | |
1513 | bmwrite(dev, RXCFG, (config & ~RxMACEnable)); | |
1514 | config = bmread(dev, TXCFG); | |
1515 | bmwrite(dev, TXCFG, (config & ~TxMACEnable)); | |
1516 | out_le32(&td->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE|ACTIVE|DEAD)); | |
1517 | printk(KERN_ERR "bmac: transmit timeout - resetting\n"); | |
1518 | bmac_enable_and_reset_chip(dev); | |
1519 | ||
1520 | /* restart rx dma */ | |
1521 | cp = bus_to_virt(ld_le32(&rd->cmdptr)); | |
1522 | out_le32(&rd->control, DBDMA_CLEAR(RUN|PAUSE|FLUSH|WAKE|ACTIVE|DEAD)); | |
1523 | out_le16(&cp->xfer_status, 0); | |
1524 | out_le32(&rd->cmdptr, virt_to_bus(cp)); | |
1525 | out_le32(&rd->control, DBDMA_SET(RUN|WAKE)); | |
1526 | ||
1527 | /* fix up the transmit side */ | |
1528 | XXDEBUG((KERN_DEBUG "bmac: tx empty=%d fill=%d fullup=%d\n", | |
1529 | bp->tx_empty, bp->tx_fill, bp->tx_fullup)); | |
1530 | i = bp->tx_empty; | |
09f75cd7 | 1531 | ++dev->stats.tx_errors; |
1da177e4 LT |
1532 | if (i != bp->tx_fill) { |
1533 | dev_kfree_skb(bp->tx_bufs[i]); | |
1534 | bp->tx_bufs[i] = NULL; | |
1535 | if (++i >= N_TX_RING) i = 0; | |
1536 | bp->tx_empty = i; | |
1537 | } | |
1538 | bp->tx_fullup = 0; | |
1539 | netif_wake_queue(dev); | |
1540 | if (i != bp->tx_fill) { | |
1541 | cp = &bp->tx_cmds[i]; | |
1542 | out_le16(&cp->xfer_status, 0); | |
1543 | out_le16(&cp->command, OUTPUT_LAST); | |
1544 | out_le32(&td->cmdptr, virt_to_bus(cp)); | |
1545 | out_le32(&td->control, DBDMA_SET(RUN)); | |
1546 | /* bmac_set_timeout(dev); */ | |
1547 | XXDEBUG((KERN_DEBUG "bmac: starting %d\n", i)); | |
1548 | } | |
1549 | ||
1550 | /* turn it back on */ | |
6aa20a22 | 1551 | oldConfig = bmread(dev, RXCFG); |
1da177e4 | 1552 | bmwrite(dev, RXCFG, oldConfig | RxMACEnable ); |
6aa20a22 | 1553 | oldConfig = bmread(dev, TXCFG); |
1da177e4 LT |
1554 | bmwrite(dev, TXCFG, oldConfig | TxMACEnable ); |
1555 | ||
1556 | spin_unlock_irqrestore(&bp->lock, flags); | |
1557 | } | |
1558 | ||
1559 | #if 0 | |
1560 | static void dump_dbdma(volatile struct dbdma_cmd *cp,int count) | |
1561 | { | |
1562 | int i,*ip; | |
6aa20a22 | 1563 | |
1da177e4 LT |
1564 | for (i=0;i< count;i++) { |
1565 | ip = (int*)(cp+i); | |
6aa20a22 | 1566 | |
1da177e4 LT |
1567 | printk("dbdma req 0x%x addr 0x%x baddr 0x%x xfer/res 0x%x\n", |
1568 | ld_le32(ip+0), | |
1569 | ld_le32(ip+1), | |
1570 | ld_le32(ip+2), | |
1571 | ld_le32(ip+3)); | |
1572 | } | |
1573 | ||
1574 | } | |
1575 | #endif | |
1576 | ||
1577 | #if 0 | |
1578 | static int | |
1579 | bmac_proc_info(char *buffer, char **start, off_t offset, int length) | |
1580 | { | |
1581 | int len = 0; | |
1582 | off_t pos = 0; | |
1583 | off_t begin = 0; | |
1584 | int i; | |
1585 | ||
1586 | if (bmac_devs == NULL) | |
1587 | return (-ENOSYS); | |
1588 | ||
1589 | len += sprintf(buffer, "BMAC counters & registers\n"); | |
1590 | ||
1591 | for (i = 0; i<N_REG_ENTRIES; i++) { | |
1592 | len += sprintf(buffer + len, "%s: %#08x\n", | |
1593 | reg_entries[i].name, | |
1594 | bmread(bmac_devs, reg_entries[i].reg_offset)); | |
1595 | pos = begin + len; | |
1596 | ||
1597 | if (pos < offset) { | |
1598 | len = 0; | |
1599 | begin = pos; | |
1600 | } | |
1601 | ||
1602 | if (pos > offset+length) break; | |
1603 | } | |
1604 | ||
1605 | *start = buffer + (offset - begin); | |
1606 | len -= (offset - begin); | |
1607 | ||
1608 | if (len > length) len = length; | |
1609 | ||
1610 | return len; | |
1611 | } | |
1612 | #endif | |
1613 | ||
1614 | static int __devexit bmac_remove(struct macio_dev *mdev) | |
1615 | { | |
1616 | struct net_device *dev = macio_get_drvdata(mdev); | |
1617 | struct bmac_data *bp = netdev_priv(dev); | |
1618 | ||
1619 | unregister_netdev(dev); | |
1620 | ||
1621 | free_irq(dev->irq, dev); | |
6aa20a22 | 1622 | free_irq(bp->tx_dma_intr, dev); |
1da177e4 LT |
1623 | free_irq(bp->rx_dma_intr, dev); |
1624 | ||
1625 | iounmap((void __iomem *)dev->base_addr); | |
1626 | iounmap(bp->tx_dma); | |
1627 | iounmap(bp->rx_dma); | |
1628 | ||
1629 | macio_release_resources(mdev); | |
1630 | ||
1631 | free_netdev(dev); | |
1632 | ||
1633 | return 0; | |
1634 | } | |
1635 | ||
6aa20a22 | 1636 | static struct of_device_id bmac_match[] = |
1da177e4 LT |
1637 | { |
1638 | { | |
1639 | .name = "bmac", | |
1da177e4 LT |
1640 | .data = (void *)0, |
1641 | }, | |
1642 | { | |
1da177e4 LT |
1643 | .type = "network", |
1644 | .compatible = "bmac+", | |
1645 | .data = (void *)1, | |
1646 | }, | |
1647 | {}, | |
1648 | }; | |
8c9795ba | 1649 | MODULE_DEVICE_TABLE (of, bmac_match); |
1da177e4 | 1650 | |
6aa20a22 | 1651 | static struct macio_driver bmac_driver = |
1da177e4 LT |
1652 | { |
1653 | .name = "bmac", | |
1654 | .match_table = bmac_match, | |
1655 | .probe = bmac_probe, | |
1656 | .remove = bmac_remove, | |
1657 | #ifdef CONFIG_PM | |
1658 | .suspend = bmac_suspend, | |
1659 | .resume = bmac_resume, | |
1660 | #endif | |
1661 | }; | |
1662 | ||
1663 | ||
1664 | static int __init bmac_init(void) | |
1665 | { | |
1666 | if (bmac_emergency_rxbuf == NULL) { | |
1667 | bmac_emergency_rxbuf = kmalloc(RX_BUFLEN, GFP_KERNEL); | |
1668 | if (bmac_emergency_rxbuf == NULL) { | |
1669 | printk(KERN_ERR "BMAC: can't allocate emergency RX buffer\n"); | |
1670 | return -ENOMEM; | |
1671 | } | |
1672 | } | |
1673 | ||
1674 | return macio_register_driver(&bmac_driver); | |
1675 | } | |
1676 | ||
1677 | static void __exit bmac_exit(void) | |
1678 | { | |
1679 | macio_unregister_driver(&bmac_driver); | |
1680 | ||
b4558ea9 JJ |
1681 | kfree(bmac_emergency_rxbuf); |
1682 | bmac_emergency_rxbuf = NULL; | |
1da177e4 LT |
1683 | } |
1684 | ||
1685 | MODULE_AUTHOR("Randy Gobbel/Paul Mackerras"); | |
1686 | MODULE_DESCRIPTION("PowerMac BMAC ethernet driver."); | |
1687 | MODULE_LICENSE("GPL"); | |
1688 | ||
1689 | module_init(bmac_init); | |
1690 | module_exit(bmac_exit); |