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1da177e4 LT |
1 | /* |
2 | * Fast Ethernet Controller (FEC) driver for Motorola MPC8xx. | |
3 | * | |
4 | * Copyright (c) 2003 Intracom S.A. | |
5 | * by Pantelis Antoniou <panto@intracom.gr> | |
6 | * | |
7 | * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com> | |
8 | * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se> | |
9 | * | |
10 | * Released under the GPL | |
11 | */ | |
12 | ||
13 | #include <linux/config.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/kernel.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/sched.h> | |
18 | #include <linux/string.h> | |
19 | #include <linux/ptrace.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/ioport.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/pci.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/netdevice.h> | |
28 | #include <linux/etherdevice.h> | |
29 | #include <linux/skbuff.h> | |
30 | #include <linux/spinlock.h> | |
31 | #include <linux/mii.h> | |
32 | #include <linux/ethtool.h> | |
33 | #include <linux/bitops.h> | |
34 | ||
35 | #include <asm/8xx_immap.h> | |
36 | #include <asm/pgtable.h> | |
37 | #include <asm/mpc8xx.h> | |
38 | #include <asm/irq.h> | |
39 | #include <asm/uaccess.h> | |
40 | #include <asm/commproc.h> | |
41 | #include <asm/dma-mapping.h> | |
42 | ||
43 | #include "fec_8xx.h" | |
44 | ||
45 | /*************************************************/ | |
46 | ||
47 | #define FEC_MAX_MULTICAST_ADDRS 64 | |
48 | ||
49 | /*************************************************/ | |
50 | ||
51 | static char version[] __devinitdata = | |
52 | DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n"; | |
53 | ||
54 | MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>"); | |
55 | MODULE_DESCRIPTION("Motorola 8xx FEC ethernet driver"); | |
56 | MODULE_LICENSE("GPL"); | |
57 | ||
8d3b33f6 RR |
58 | int fec_8xx_debug = -1; /* -1 == use FEC_8XX_DEF_MSG_ENABLE as value */ |
59 | module_param(fec_8xx_debug, int, 0); | |
1da177e4 LT |
60 | MODULE_PARM_DESC(fec_8xx_debug, |
61 | "FEC 8xx bitmapped debugging message enable value"); | |
62 | ||
1da177e4 LT |
63 | |
64 | /*************************************************/ | |
65 | ||
66 | /* | |
67 | * Delay to wait for FEC reset command to complete (in us) | |
68 | */ | |
69 | #define FEC_RESET_DELAY 50 | |
70 | ||
71 | /*****************************************************************************************/ | |
72 | ||
73 | static void fec_whack_reset(fec_t * fecp) | |
74 | { | |
75 | int i; | |
76 | ||
77 | /* | |
78 | * Whack a reset. We should wait for this. | |
79 | */ | |
80 | FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET); | |
81 | for (i = 0; | |
82 | (FR(fecp, ecntrl) & FEC_ECNTRL_RESET) != 0 && i < FEC_RESET_DELAY; | |
83 | i++) | |
84 | udelay(1); | |
85 | ||
86 | if (i == FEC_RESET_DELAY) | |
87 | printk(KERN_WARNING "FEC Reset timeout!\n"); | |
88 | ||
89 | } | |
90 | ||
91 | /****************************************************************************/ | |
92 | ||
93 | /* | |
94 | * Transmitter timeout. | |
95 | */ | |
96 | #define TX_TIMEOUT (2*HZ) | |
97 | ||
98 | /****************************************************************************/ | |
99 | ||
100 | /* | |
101 | * Returns the CRC needed when filling in the hash table for | |
102 | * multicast group filtering | |
103 | * pAddr must point to a MAC address (6 bytes) | |
104 | */ | |
105 | static __u32 fec_mulicast_calc_crc(char *pAddr) | |
106 | { | |
107 | u8 byte; | |
108 | int byte_count; | |
109 | int bit_count; | |
110 | __u32 crc = 0xffffffff; | |
111 | u8 msb; | |
112 | ||
113 | for (byte_count = 0; byte_count < 6; byte_count++) { | |
114 | byte = pAddr[byte_count]; | |
115 | for (bit_count = 0; bit_count < 8; bit_count++) { | |
116 | msb = crc >> 31; | |
117 | crc <<= 1; | |
118 | if (msb ^ (byte & 0x1)) { | |
119 | crc ^= FEC_CRC_POLY; | |
120 | } | |
121 | byte >>= 1; | |
122 | } | |
123 | } | |
124 | return (crc); | |
125 | } | |
126 | ||
127 | /* | |
128 | * Set or clear the multicast filter for this adaptor. | |
129 | * Skeleton taken from sunlance driver. | |
130 | * The CPM Ethernet implementation allows Multicast as well as individual | |
131 | * MAC address filtering. Some of the drivers check to make sure it is | |
132 | * a group multicast address, and discard those that are not. I guess I | |
133 | * will do the same for now, but just remove the test if you want | |
134 | * individual filtering as well (do the upper net layers want or support | |
135 | * this kind of feature?). | |
136 | */ | |
137 | static void fec_set_multicast_list(struct net_device *dev) | |
138 | { | |
139 | struct fec_enet_private *fep = netdev_priv(dev); | |
140 | fec_t *fecp = fep->fecp; | |
141 | struct dev_mc_list *pmc; | |
142 | __u32 crc; | |
143 | int temp; | |
144 | __u32 csrVal; | |
145 | int hash_index; | |
146 | __u32 hthi, htlo; | |
147 | unsigned long flags; | |
148 | ||
149 | ||
150 | if ((dev->flags & IFF_PROMISC) != 0) { | |
151 | ||
152 | spin_lock_irqsave(&fep->lock, flags); | |
153 | FS(fecp, r_cntrl, FEC_RCNTRL_PROM); | |
154 | spin_unlock_irqrestore(&fep->lock, flags); | |
155 | ||
156 | /* | |
157 | * Log any net taps. | |
158 | */ | |
159 | printk(KERN_WARNING DRV_MODULE_NAME | |
160 | ": %s: Promiscuous mode enabled.\n", dev->name); | |
161 | return; | |
162 | ||
163 | } | |
164 | ||
165 | if ((dev->flags & IFF_ALLMULTI) != 0 || | |
166 | dev->mc_count > FEC_MAX_MULTICAST_ADDRS) { | |
167 | /* | |
168 | * Catch all multicast addresses, set the filter to all 1's. | |
169 | */ | |
170 | hthi = 0xffffffffU; | |
171 | htlo = 0xffffffffU; | |
172 | } else { | |
173 | hthi = 0; | |
174 | htlo = 0; | |
175 | ||
176 | /* | |
177 | * Now populate the hash table | |
178 | */ | |
179 | for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next) { | |
180 | crc = fec_mulicast_calc_crc(pmc->dmi_addr); | |
181 | temp = (crc & 0x3f) >> 1; | |
182 | hash_index = ((temp & 0x01) << 4) | | |
183 | ((temp & 0x02) << 2) | | |
184 | ((temp & 0x04)) | | |
185 | ((temp & 0x08) >> 2) | | |
186 | ((temp & 0x10) >> 4); | |
187 | csrVal = (1 << hash_index); | |
188 | if (crc & 1) | |
189 | hthi |= csrVal; | |
190 | else | |
191 | htlo |= csrVal; | |
192 | } | |
193 | } | |
194 | ||
195 | spin_lock_irqsave(&fep->lock, flags); | |
196 | FC(fecp, r_cntrl, FEC_RCNTRL_PROM); | |
197 | FW(fecp, hash_table_high, hthi); | |
198 | FW(fecp, hash_table_low, htlo); | |
199 | spin_unlock_irqrestore(&fep->lock, flags); | |
200 | } | |
201 | ||
202 | static int fec_set_mac_address(struct net_device *dev, void *addr) | |
203 | { | |
204 | struct sockaddr *mac = addr; | |
205 | struct fec_enet_private *fep = netdev_priv(dev); | |
206 | struct fec *fecp = fep->fecp; | |
207 | int i; | |
208 | __u32 addrhi, addrlo; | |
209 | unsigned long flags; | |
210 | ||
211 | /* Get pointer to SCC area in parameter RAM. */ | |
212 | for (i = 0; i < 6; i++) | |
213 | dev->dev_addr[i] = mac->sa_data[i]; | |
214 | ||
215 | /* | |
216 | * Set station address. | |
217 | */ | |
218 | addrhi = ((__u32) dev->dev_addr[0] << 24) | | |
219 | ((__u32) dev->dev_addr[1] << 16) | | |
220 | ((__u32) dev->dev_addr[2] << 8) | | |
221 | (__u32) dev->dev_addr[3]; | |
222 | addrlo = ((__u32) dev->dev_addr[4] << 24) | | |
223 | ((__u32) dev->dev_addr[5] << 16); | |
224 | ||
225 | spin_lock_irqsave(&fep->lock, flags); | |
226 | FW(fecp, addr_low, addrhi); | |
227 | FW(fecp, addr_high, addrlo); | |
228 | spin_unlock_irqrestore(&fep->lock, flags); | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | /* | |
234 | * This function is called to start or restart the FEC during a link | |
235 | * change. This only happens when switching between half and full | |
236 | * duplex. | |
237 | */ | |
238 | void fec_restart(struct net_device *dev, int duplex, int speed) | |
239 | { | |
240 | #ifdef CONFIG_DUET | |
241 | immap_t *immap = (immap_t *) IMAP_ADDR; | |
242 | __u32 cptr; | |
243 | #endif | |
244 | struct fec_enet_private *fep = netdev_priv(dev); | |
245 | struct fec *fecp = fep->fecp; | |
246 | const struct fec_platform_info *fpi = fep->fpi; | |
247 | cbd_t *bdp; | |
248 | struct sk_buff *skb; | |
249 | int i; | |
250 | __u32 addrhi, addrlo; | |
251 | ||
252 | fec_whack_reset(fep->fecp); | |
253 | ||
254 | /* | |
255 | * Set station address. | |
256 | */ | |
257 | addrhi = ((__u32) dev->dev_addr[0] << 24) | | |
258 | ((__u32) dev->dev_addr[1] << 16) | | |
259 | ((__u32) dev->dev_addr[2] << 8) | | |
260 | (__u32) dev->dev_addr[3]; | |
261 | addrlo = ((__u32) dev->dev_addr[4] << 24) | | |
262 | ((__u32) dev->dev_addr[5] << 16); | |
263 | FW(fecp, addr_low, addrhi); | |
264 | FW(fecp, addr_high, addrlo); | |
265 | ||
266 | /* | |
267 | * Reset all multicast. | |
268 | */ | |
269 | FW(fecp, hash_table_high, 0); | |
270 | FW(fecp, hash_table_low, 0); | |
271 | ||
272 | /* | |
273 | * Set maximum receive buffer size. | |
274 | */ | |
275 | FW(fecp, r_buff_size, PKT_MAXBLR_SIZE); | |
276 | FW(fecp, r_hash, PKT_MAXBUF_SIZE); | |
277 | ||
278 | /* | |
279 | * Set receive and transmit descriptor base. | |
280 | */ | |
281 | FW(fecp, r_des_start, iopa((__u32) (fep->rx_bd_base))); | |
282 | FW(fecp, x_des_start, iopa((__u32) (fep->tx_bd_base))); | |
283 | ||
284 | fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; | |
285 | fep->tx_free = fep->tx_ring; | |
286 | fep->cur_rx = fep->rx_bd_base; | |
287 | ||
288 | /* | |
289 | * Reset SKB receive buffers | |
290 | */ | |
291 | for (i = 0; i < fep->rx_ring; i++) { | |
292 | if ((skb = fep->rx_skbuff[i]) == NULL) | |
293 | continue; | |
294 | fep->rx_skbuff[i] = NULL; | |
295 | dev_kfree_skb(skb); | |
296 | } | |
297 | ||
298 | /* | |
299 | * Initialize the receive buffer descriptors. | |
300 | */ | |
301 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { | |
302 | skb = dev_alloc_skb(ENET_RX_FRSIZE); | |
303 | if (skb == NULL) { | |
304 | printk(KERN_WARNING DRV_MODULE_NAME | |
305 | ": %s Memory squeeze, unable to allocate skb\n", | |
306 | dev->name); | |
307 | fep->stats.rx_dropped++; | |
308 | break; | |
309 | } | |
310 | fep->rx_skbuff[i] = skb; | |
311 | skb->dev = dev; | |
312 | CBDW_BUFADDR(bdp, dma_map_single(NULL, skb->data, | |
313 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
314 | DMA_FROM_DEVICE)); | |
315 | CBDW_DATLEN(bdp, 0); /* zero */ | |
316 | CBDW_SC(bdp, BD_ENET_RX_EMPTY | | |
317 | ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP)); | |
318 | } | |
319 | /* | |
320 | * if we failed, fillup remainder | |
321 | */ | |
322 | for (; i < fep->rx_ring; i++, bdp++) { | |
323 | fep->rx_skbuff[i] = NULL; | |
324 | CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP); | |
325 | } | |
326 | ||
327 | /* | |
328 | * Reset SKB transmit buffers. | |
329 | */ | |
330 | for (i = 0; i < fep->tx_ring; i++) { | |
331 | if ((skb = fep->tx_skbuff[i]) == NULL) | |
332 | continue; | |
333 | fep->tx_skbuff[i] = NULL; | |
334 | dev_kfree_skb(skb); | |
335 | } | |
336 | ||
337 | /* | |
338 | * ...and the same for transmit. | |
339 | */ | |
340 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { | |
341 | fep->tx_skbuff[i] = NULL; | |
342 | CBDW_BUFADDR(bdp, virt_to_bus(NULL)); | |
343 | CBDW_DATLEN(bdp, 0); | |
344 | CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP); | |
345 | } | |
346 | ||
347 | /* | |
348 | * Enable big endian and don't care about SDMA FC. | |
349 | */ | |
350 | FW(fecp, fun_code, 0x78000000); | |
351 | ||
352 | /* | |
353 | * Set MII speed. | |
354 | */ | |
355 | FW(fecp, mii_speed, fep->fec_phy_speed); | |
356 | ||
357 | /* | |
358 | * Clear any outstanding interrupt. | |
359 | */ | |
360 | FW(fecp, ievent, 0xffc0); | |
361 | FW(fecp, ivec, (fpi->fec_irq / 2) << 29); | |
362 | ||
363 | /* | |
364 | * adjust to speed (only for DUET & RMII) | |
365 | */ | |
366 | #ifdef CONFIG_DUET | |
367 | cptr = in_be32(&immap->im_cpm.cp_cptr); | |
368 | switch (fpi->fec_no) { | |
369 | case 0: | |
370 | /* | |
371 | * check if in RMII mode | |
372 | */ | |
373 | if ((cptr & 0x100) == 0) | |
374 | break; | |
375 | ||
376 | if (speed == 10) | |
377 | cptr |= 0x0000010; | |
378 | else if (speed == 100) | |
379 | cptr &= ~0x0000010; | |
380 | break; | |
381 | case 1: | |
382 | /* | |
383 | * check if in RMII mode | |
384 | */ | |
385 | if ((cptr & 0x80) == 0) | |
386 | break; | |
387 | ||
388 | if (speed == 10) | |
389 | cptr |= 0x0000008; | |
390 | else if (speed == 100) | |
391 | cptr &= ~0x0000008; | |
392 | break; | |
393 | default: | |
394 | break; | |
395 | } | |
396 | out_be32(&immap->im_cpm.cp_cptr, cptr); | |
397 | #endif | |
398 | ||
399 | FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ | |
400 | /* | |
401 | * adjust to duplex mode | |
402 | */ | |
403 | if (duplex) { | |
404 | FC(fecp, r_cntrl, FEC_RCNTRL_DRT); | |
405 | FS(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD enable */ | |
406 | } else { | |
407 | FS(fecp, r_cntrl, FEC_RCNTRL_DRT); | |
408 | FC(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD disable */ | |
409 | } | |
410 | ||
411 | /* | |
412 | * Enable interrupts we wish to service. | |
413 | */ | |
414 | FW(fecp, imask, FEC_ENET_TXF | FEC_ENET_TXB | | |
415 | FEC_ENET_RXF | FEC_ENET_RXB); | |
416 | ||
417 | /* | |
418 | * And last, enable the transmit and receive processing. | |
419 | */ | |
420 | FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); | |
421 | FW(fecp, r_des_active, 0x01000000); | |
422 | } | |
423 | ||
424 | void fec_stop(struct net_device *dev) | |
425 | { | |
426 | struct fec_enet_private *fep = netdev_priv(dev); | |
427 | fec_t *fecp = fep->fecp; | |
428 | struct sk_buff *skb; | |
429 | int i; | |
430 | ||
431 | if ((FR(fecp, ecntrl) & FEC_ECNTRL_ETHER_EN) == 0) | |
432 | return; /* already down */ | |
433 | ||
434 | FW(fecp, x_cntrl, 0x01); /* Graceful transmit stop */ | |
435 | for (i = 0; ((FR(fecp, ievent) & 0x10000000) == 0) && | |
436 | i < FEC_RESET_DELAY; i++) | |
437 | udelay(1); | |
438 | ||
439 | if (i == FEC_RESET_DELAY) | |
440 | printk(KERN_WARNING DRV_MODULE_NAME | |
441 | ": %s FEC timeout on graceful transmit stop\n", | |
442 | dev->name); | |
443 | /* | |
444 | * Disable FEC. Let only MII interrupts. | |
445 | */ | |
446 | FW(fecp, imask, 0); | |
447 | FW(fecp, ecntrl, ~FEC_ECNTRL_ETHER_EN); | |
448 | ||
449 | /* | |
450 | * Reset SKB transmit buffers. | |
451 | */ | |
452 | for (i = 0; i < fep->tx_ring; i++) { | |
453 | if ((skb = fep->tx_skbuff[i]) == NULL) | |
454 | continue; | |
455 | fep->tx_skbuff[i] = NULL; | |
456 | dev_kfree_skb(skb); | |
457 | } | |
458 | ||
459 | /* | |
460 | * Reset SKB receive buffers | |
461 | */ | |
462 | for (i = 0; i < fep->rx_ring; i++) { | |
463 | if ((skb = fep->rx_skbuff[i]) == NULL) | |
464 | continue; | |
465 | fep->rx_skbuff[i] = NULL; | |
466 | dev_kfree_skb(skb); | |
467 | } | |
468 | } | |
469 | ||
470 | /* common receive function */ | |
471 | static int fec_enet_rx_common(struct net_device *dev, int *budget) | |
472 | { | |
473 | struct fec_enet_private *fep = netdev_priv(dev); | |
474 | fec_t *fecp = fep->fecp; | |
475 | const struct fec_platform_info *fpi = fep->fpi; | |
476 | cbd_t *bdp; | |
477 | struct sk_buff *skb, *skbn, *skbt; | |
478 | int received = 0; | |
479 | __u16 pkt_len, sc; | |
480 | int curidx; | |
481 | int rx_work_limit; | |
482 | ||
483 | if (fpi->use_napi) { | |
484 | rx_work_limit = min(dev->quota, *budget); | |
485 | ||
486 | if (!netif_running(dev)) | |
487 | return 0; | |
488 | } | |
489 | ||
490 | /* | |
491 | * First, grab all of the stats for the incoming packet. | |
492 | * These get messed up if we get called due to a busy condition. | |
493 | */ | |
494 | bdp = fep->cur_rx; | |
495 | ||
496 | /* clear RX status bits for napi*/ | |
497 | if (fpi->use_napi) | |
498 | FW(fecp, ievent, FEC_ENET_RXF | FEC_ENET_RXB); | |
499 | ||
500 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { | |
501 | ||
502 | curidx = bdp - fep->rx_bd_base; | |
503 | ||
504 | /* | |
505 | * Since we have allocated space to hold a complete frame, | |
506 | * the last indicator should be set. | |
507 | */ | |
508 | if ((sc & BD_ENET_RX_LAST) == 0) | |
509 | printk(KERN_WARNING DRV_MODULE_NAME | |
510 | ": %s rcv is not +last\n", | |
511 | dev->name); | |
512 | ||
513 | /* | |
514 | * Check for errors. | |
515 | */ | |
516 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | | |
517 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { | |
518 | fep->stats.rx_errors++; | |
519 | /* Frame too long or too short. */ | |
520 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) | |
521 | fep->stats.rx_length_errors++; | |
522 | /* Frame alignment */ | |
523 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) | |
524 | fep->stats.rx_frame_errors++; | |
525 | /* CRC Error */ | |
526 | if (sc & BD_ENET_RX_CR) | |
527 | fep->stats.rx_crc_errors++; | |
528 | /* FIFO overrun */ | |
529 | if (sc & BD_ENET_RX_OV) | |
530 | fep->stats.rx_crc_errors++; | |
531 | ||
532 | skbn = fep->rx_skbuff[curidx]; | |
533 | BUG_ON(skbn == NULL); | |
534 | ||
535 | } else { | |
536 | ||
537 | /* napi, got packet but no quota */ | |
538 | if (fpi->use_napi && --rx_work_limit < 0) | |
539 | break; | |
540 | ||
541 | skb = fep->rx_skbuff[curidx]; | |
542 | BUG_ON(skb == NULL); | |
543 | ||
544 | /* | |
545 | * Process the incoming frame. | |
546 | */ | |
547 | fep->stats.rx_packets++; | |
548 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ | |
549 | fep->stats.rx_bytes += pkt_len + 4; | |
550 | ||
551 | if (pkt_len <= fpi->rx_copybreak) { | |
552 | /* +2 to make IP header L1 cache aligned */ | |
553 | skbn = dev_alloc_skb(pkt_len + 2); | |
554 | if (skbn != NULL) { | |
555 | skb_reserve(skbn, 2); /* align IP header */ | |
556 | memcpy(skbn->data, skb->data, pkt_len); | |
557 | /* swap */ | |
558 | skbt = skb; | |
559 | skb = skbn; | |
560 | skbn = skbt; | |
561 | } | |
562 | } else | |
563 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); | |
564 | ||
565 | if (skbn != NULL) { | |
566 | skb->dev = dev; | |
567 | skb_put(skb, pkt_len); /* Make room */ | |
568 | skb->protocol = eth_type_trans(skb, dev); | |
569 | received++; | |
570 | if (!fpi->use_napi) | |
571 | netif_rx(skb); | |
572 | else | |
573 | netif_receive_skb(skb); | |
574 | } else { | |
575 | printk(KERN_WARNING DRV_MODULE_NAME | |
576 | ": %s Memory squeeze, dropping packet.\n", | |
577 | dev->name); | |
578 | fep->stats.rx_dropped++; | |
579 | skbn = skb; | |
580 | } | |
581 | } | |
582 | ||
583 | fep->rx_skbuff[curidx] = skbn; | |
584 | CBDW_BUFADDR(bdp, dma_map_single(NULL, skbn->data, | |
585 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
586 | DMA_FROM_DEVICE)); | |
587 | CBDW_DATLEN(bdp, 0); | |
588 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); | |
589 | ||
590 | /* | |
591 | * Update BD pointer to next entry. | |
592 | */ | |
593 | if ((sc & BD_ENET_RX_WRAP) == 0) | |
594 | bdp++; | |
595 | else | |
596 | bdp = fep->rx_bd_base; | |
597 | ||
598 | /* | |
599 | * Doing this here will keep the FEC running while we process | |
600 | * incoming frames. On a heavily loaded network, we should be | |
601 | * able to keep up at the expense of system resources. | |
602 | */ | |
603 | FW(fecp, r_des_active, 0x01000000); | |
604 | } | |
605 | ||
606 | fep->cur_rx = bdp; | |
607 | ||
608 | if (fpi->use_napi) { | |
609 | dev->quota -= received; | |
610 | *budget -= received; | |
611 | ||
612 | if (rx_work_limit < 0) | |
613 | return 1; /* not done */ | |
614 | ||
615 | /* done */ | |
616 | netif_rx_complete(dev); | |
617 | ||
618 | /* enable RX interrupt bits */ | |
619 | FS(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB); | |
620 | } | |
621 | ||
622 | return 0; | |
623 | } | |
624 | ||
625 | static void fec_enet_tx(struct net_device *dev) | |
626 | { | |
627 | struct fec_enet_private *fep = netdev_priv(dev); | |
628 | cbd_t *bdp; | |
629 | struct sk_buff *skb; | |
630 | int dirtyidx, do_wake; | |
631 | __u16 sc; | |
632 | ||
633 | spin_lock(&fep->lock); | |
634 | bdp = fep->dirty_tx; | |
635 | ||
636 | do_wake = 0; | |
637 | while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) { | |
638 | ||
639 | dirtyidx = bdp - fep->tx_bd_base; | |
640 | ||
641 | if (fep->tx_free == fep->tx_ring) | |
642 | break; | |
643 | ||
644 | skb = fep->tx_skbuff[dirtyidx]; | |
645 | ||
646 | /* | |
647 | * Check for errors. | |
648 | */ | |
649 | if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | | |
650 | BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) { | |
651 | fep->stats.tx_errors++; | |
652 | if (sc & BD_ENET_TX_HB) /* No heartbeat */ | |
653 | fep->stats.tx_heartbeat_errors++; | |
654 | if (sc & BD_ENET_TX_LC) /* Late collision */ | |
655 | fep->stats.tx_window_errors++; | |
656 | if (sc & BD_ENET_TX_RL) /* Retrans limit */ | |
657 | fep->stats.tx_aborted_errors++; | |
658 | if (sc & BD_ENET_TX_UN) /* Underrun */ | |
659 | fep->stats.tx_fifo_errors++; | |
660 | if (sc & BD_ENET_TX_CSL) /* Carrier lost */ | |
661 | fep->stats.tx_carrier_errors++; | |
662 | } else | |
663 | fep->stats.tx_packets++; | |
664 | ||
665 | if (sc & BD_ENET_TX_READY) | |
666 | printk(KERN_WARNING DRV_MODULE_NAME | |
667 | ": %s HEY! Enet xmit interrupt and TX_READY.\n", | |
668 | dev->name); | |
669 | ||
670 | /* | |
671 | * Deferred means some collisions occurred during transmit, | |
672 | * but we eventually sent the packet OK. | |
673 | */ | |
674 | if (sc & BD_ENET_TX_DEF) | |
675 | fep->stats.collisions++; | |
676 | ||
677 | /* | |
678 | * Free the sk buffer associated with this last transmit. | |
679 | */ | |
680 | dev_kfree_skb_irq(skb); | |
681 | fep->tx_skbuff[dirtyidx] = NULL; | |
682 | ||
683 | /* | |
684 | * Update pointer to next buffer descriptor to be transmitted. | |
685 | */ | |
686 | if ((sc & BD_ENET_TX_WRAP) == 0) | |
687 | bdp++; | |
688 | else | |
689 | bdp = fep->tx_bd_base; | |
690 | ||
691 | /* | |
692 | * Since we have freed up a buffer, the ring is no longer | |
693 | * full. | |
694 | */ | |
695 | if (!fep->tx_free++) | |
696 | do_wake = 1; | |
697 | } | |
698 | ||
699 | fep->dirty_tx = bdp; | |
700 | ||
701 | spin_unlock(&fep->lock); | |
702 | ||
703 | if (do_wake && netif_queue_stopped(dev)) | |
704 | netif_wake_queue(dev); | |
705 | } | |
706 | ||
707 | /* | |
708 | * The interrupt handler. | |
709 | * This is called from the MPC core interrupt. | |
710 | */ | |
711 | static irqreturn_t | |
712 | fec_enet_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
713 | { | |
714 | struct net_device *dev = dev_id; | |
715 | struct fec_enet_private *fep; | |
716 | const struct fec_platform_info *fpi; | |
717 | fec_t *fecp; | |
718 | __u32 int_events; | |
719 | __u32 int_events_napi; | |
720 | ||
721 | if (unlikely(dev == NULL)) | |
722 | return IRQ_NONE; | |
723 | ||
724 | fep = netdev_priv(dev); | |
725 | fecp = fep->fecp; | |
726 | fpi = fep->fpi; | |
727 | ||
728 | /* | |
729 | * Get the interrupt events that caused us to be here. | |
730 | */ | |
731 | while ((int_events = FR(fecp, ievent) & FR(fecp, imask)) != 0) { | |
732 | ||
733 | if (!fpi->use_napi) | |
734 | FW(fecp, ievent, int_events); | |
735 | else { | |
736 | int_events_napi = int_events & ~(FEC_ENET_RXF | FEC_ENET_RXB); | |
737 | FW(fecp, ievent, int_events_napi); | |
738 | } | |
739 | ||
740 | if ((int_events & (FEC_ENET_HBERR | FEC_ENET_BABR | | |
741 | FEC_ENET_BABT | FEC_ENET_EBERR)) != 0) | |
742 | printk(KERN_WARNING DRV_MODULE_NAME | |
743 | ": %s FEC ERROR(s) 0x%x\n", | |
744 | dev->name, int_events); | |
745 | ||
746 | if ((int_events & FEC_ENET_RXF) != 0) { | |
747 | if (!fpi->use_napi) | |
748 | fec_enet_rx_common(dev, NULL); | |
749 | else { | |
750 | if (netif_rx_schedule_prep(dev)) { | |
751 | /* disable rx interrupts */ | |
752 | FC(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB); | |
753 | __netif_rx_schedule(dev); | |
754 | } else { | |
755 | printk(KERN_ERR DRV_MODULE_NAME | |
756 | ": %s driver bug! interrupt while in poll!\n", | |
757 | dev->name); | |
758 | FC(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB); | |
759 | } | |
760 | } | |
761 | } | |
762 | ||
763 | if ((int_events & FEC_ENET_TXF) != 0) | |
764 | fec_enet_tx(dev); | |
765 | } | |
766 | ||
767 | return IRQ_HANDLED; | |
768 | } | |
769 | ||
770 | /* This interrupt occurs when the PHY detects a link change. */ | |
771 | static irqreturn_t | |
772 | fec_mii_link_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
773 | { | |
774 | struct net_device *dev = dev_id; | |
775 | struct fec_enet_private *fep; | |
776 | const struct fec_platform_info *fpi; | |
777 | ||
778 | if (unlikely(dev == NULL)) | |
779 | return IRQ_NONE; | |
780 | ||
781 | fep = netdev_priv(dev); | |
782 | fpi = fep->fpi; | |
783 | ||
784 | if (!fpi->use_mdio) | |
785 | return IRQ_NONE; | |
786 | ||
787 | /* | |
788 | * Acknowledge the interrupt if possible. If we have not | |
789 | * found the PHY yet we can't process or acknowledge the | |
790 | * interrupt now. Instead we ignore this interrupt for now, | |
791 | * which we can do since it is edge triggered. It will be | |
792 | * acknowledged later by fec_enet_open(). | |
793 | */ | |
794 | if (!fep->phy) | |
795 | return IRQ_NONE; | |
796 | ||
797 | fec_mii_ack_int(dev); | |
798 | fec_mii_link_status_change_check(dev, 0); | |
799 | ||
800 | return IRQ_HANDLED; | |
801 | } | |
802 | ||
803 | ||
804 | /**********************************************************************************/ | |
805 | ||
806 | static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
807 | { | |
808 | struct fec_enet_private *fep = netdev_priv(dev); | |
809 | fec_t *fecp = fep->fecp; | |
810 | cbd_t *bdp; | |
811 | int curidx; | |
812 | unsigned long flags; | |
813 | ||
814 | spin_lock_irqsave(&fep->tx_lock, flags); | |
815 | ||
816 | /* | |
817 | * Fill in a Tx ring entry | |
818 | */ | |
819 | bdp = fep->cur_tx; | |
820 | ||
821 | if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) { | |
822 | netif_stop_queue(dev); | |
823 | spin_unlock_irqrestore(&fep->tx_lock, flags); | |
824 | ||
825 | /* | |
826 | * Ooops. All transmit buffers are full. Bail out. | |
827 | * This should not happen, since the tx queue should be stopped. | |
828 | */ | |
829 | printk(KERN_WARNING DRV_MODULE_NAME | |
830 | ": %s tx queue full!.\n", dev->name); | |
831 | return 1; | |
832 | } | |
833 | ||
834 | curidx = bdp - fep->tx_bd_base; | |
835 | /* | |
836 | * Clear all of the status flags. | |
837 | */ | |
838 | CBDC_SC(bdp, BD_ENET_TX_STATS); | |
839 | ||
840 | /* | |
841 | * Save skb pointer. | |
842 | */ | |
843 | fep->tx_skbuff[curidx] = skb; | |
844 | ||
845 | fep->stats.tx_bytes += skb->len; | |
846 | ||
847 | /* | |
848 | * Push the data cache so the CPM does not get stale memory data. | |
849 | */ | |
850 | CBDW_BUFADDR(bdp, dma_map_single(NULL, skb->data, | |
851 | skb->len, DMA_TO_DEVICE)); | |
852 | CBDW_DATLEN(bdp, skb->len); | |
853 | ||
854 | dev->trans_start = jiffies; | |
855 | ||
856 | /* | |
857 | * If this was the last BD in the ring, start at the beginning again. | |
858 | */ | |
859 | if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) | |
860 | fep->cur_tx++; | |
861 | else | |
862 | fep->cur_tx = fep->tx_bd_base; | |
863 | ||
864 | if (!--fep->tx_free) | |
865 | netif_stop_queue(dev); | |
866 | ||
867 | /* | |
868 | * Trigger transmission start | |
869 | */ | |
870 | CBDS_SC(bdp, BD_ENET_TX_READY | BD_ENET_TX_INTR | | |
871 | BD_ENET_TX_LAST | BD_ENET_TX_TC); | |
872 | FW(fecp, x_des_active, 0x01000000); | |
873 | ||
874 | spin_unlock_irqrestore(&fep->tx_lock, flags); | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
879 | static void fec_timeout(struct net_device *dev) | |
880 | { | |
881 | struct fec_enet_private *fep = netdev_priv(dev); | |
882 | ||
883 | fep->stats.tx_errors++; | |
884 | ||
885 | if (fep->tx_free) | |
886 | netif_wake_queue(dev); | |
887 | ||
888 | /* check link status again */ | |
889 | fec_mii_link_status_change_check(dev, 0); | |
890 | } | |
891 | ||
892 | static int fec_enet_open(struct net_device *dev) | |
893 | { | |
894 | struct fec_enet_private *fep = netdev_priv(dev); | |
895 | const struct fec_platform_info *fpi = fep->fpi; | |
896 | unsigned long flags; | |
897 | ||
898 | /* Install our interrupt handler. */ | |
899 | if (request_irq(fpi->fec_irq, fec_enet_interrupt, 0, "fec", dev) != 0) { | |
900 | printk(KERN_ERR DRV_MODULE_NAME | |
901 | ": %s Could not allocate FEC IRQ!", dev->name); | |
902 | return -EINVAL; | |
903 | } | |
904 | ||
905 | /* Install our phy interrupt handler */ | |
906 | if (fpi->phy_irq != -1 && | |
907 | request_irq(fpi->phy_irq, fec_mii_link_interrupt, 0, "fec-phy", | |
908 | dev) != 0) { | |
909 | printk(KERN_ERR DRV_MODULE_NAME | |
910 | ": %s Could not allocate PHY IRQ!", dev->name); | |
911 | free_irq(fpi->fec_irq, dev); | |
912 | return -EINVAL; | |
913 | } | |
914 | ||
915 | if (fpi->use_mdio) { | |
916 | fec_mii_startup(dev); | |
917 | netif_carrier_off(dev); | |
918 | fec_mii_link_status_change_check(dev, 1); | |
919 | } else { | |
920 | spin_lock_irqsave(&fep->lock, flags); | |
921 | fec_restart(dev, 1, 100); /* XXX this sucks */ | |
922 | spin_unlock_irqrestore(&fep->lock, flags); | |
923 | ||
924 | netif_carrier_on(dev); | |
925 | netif_start_queue(dev); | |
926 | } | |
927 | return 0; | |
928 | } | |
929 | ||
930 | static int fec_enet_close(struct net_device *dev) | |
931 | { | |
932 | struct fec_enet_private *fep = netdev_priv(dev); | |
933 | const struct fec_platform_info *fpi = fep->fpi; | |
934 | unsigned long flags; | |
935 | ||
936 | netif_stop_queue(dev); | |
937 | netif_carrier_off(dev); | |
938 | ||
939 | if (fpi->use_mdio) | |
940 | fec_mii_shutdown(dev); | |
941 | ||
942 | spin_lock_irqsave(&fep->lock, flags); | |
943 | fec_stop(dev); | |
944 | spin_unlock_irqrestore(&fep->lock, flags); | |
945 | ||
946 | /* release any irqs */ | |
947 | if (fpi->phy_irq != -1) | |
948 | free_irq(fpi->phy_irq, dev); | |
949 | free_irq(fpi->fec_irq, dev); | |
950 | ||
951 | return 0; | |
952 | } | |
953 | ||
954 | static struct net_device_stats *fec_enet_get_stats(struct net_device *dev) | |
955 | { | |
956 | struct fec_enet_private *fep = netdev_priv(dev); | |
957 | return &fep->stats; | |
958 | } | |
959 | ||
960 | static int fec_enet_poll(struct net_device *dev, int *budget) | |
961 | { | |
962 | return fec_enet_rx_common(dev, budget); | |
963 | } | |
964 | ||
965 | /*************************************************************************/ | |
966 | ||
967 | static void fec_get_drvinfo(struct net_device *dev, | |
968 | struct ethtool_drvinfo *info) | |
969 | { | |
970 | strcpy(info->driver, DRV_MODULE_NAME); | |
971 | strcpy(info->version, DRV_MODULE_VERSION); | |
972 | } | |
973 | ||
974 | static int fec_get_regs_len(struct net_device *dev) | |
975 | { | |
976 | return sizeof(fec_t); | |
977 | } | |
978 | ||
979 | static void fec_get_regs(struct net_device *dev, struct ethtool_regs *regs, | |
980 | void *p) | |
981 | { | |
982 | struct fec_enet_private *fep = netdev_priv(dev); | |
983 | unsigned long flags; | |
984 | ||
985 | if (regs->len < sizeof(fec_t)) | |
986 | return; | |
987 | ||
988 | regs->version = 0; | |
989 | spin_lock_irqsave(&fep->lock, flags); | |
990 | memcpy_fromio(p, fep->fecp, sizeof(fec_t)); | |
991 | spin_unlock_irqrestore(&fep->lock, flags); | |
992 | } | |
993 | ||
994 | static int fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
995 | { | |
996 | struct fec_enet_private *fep = netdev_priv(dev); | |
997 | unsigned long flags; | |
998 | int rc; | |
999 | ||
1000 | spin_lock_irqsave(&fep->lock, flags); | |
1001 | rc = mii_ethtool_gset(&fep->mii_if, cmd); | |
1002 | spin_unlock_irqrestore(&fep->lock, flags); | |
1003 | ||
1004 | return rc; | |
1005 | } | |
1006 | ||
1007 | static int fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1008 | { | |
1009 | struct fec_enet_private *fep = netdev_priv(dev); | |
1010 | unsigned long flags; | |
1011 | int rc; | |
1012 | ||
1013 | spin_lock_irqsave(&fep->lock, flags); | |
1014 | rc = mii_ethtool_sset(&fep->mii_if, cmd); | |
1015 | spin_unlock_irqrestore(&fep->lock, flags); | |
1016 | ||
1017 | return rc; | |
1018 | } | |
1019 | ||
1020 | static int fec_nway_reset(struct net_device *dev) | |
1021 | { | |
1022 | struct fec_enet_private *fep = netdev_priv(dev); | |
1023 | return mii_nway_restart(&fep->mii_if); | |
1024 | } | |
1025 | ||
1026 | static __u32 fec_get_msglevel(struct net_device *dev) | |
1027 | { | |
1028 | struct fec_enet_private *fep = netdev_priv(dev); | |
1029 | return fep->msg_enable; | |
1030 | } | |
1031 | ||
1032 | static void fec_set_msglevel(struct net_device *dev, __u32 value) | |
1033 | { | |
1034 | struct fec_enet_private *fep = netdev_priv(dev); | |
1035 | fep->msg_enable = value; | |
1036 | } | |
1037 | ||
1038 | static struct ethtool_ops fec_ethtool_ops = { | |
1039 | .get_drvinfo = fec_get_drvinfo, | |
1040 | .get_regs_len = fec_get_regs_len, | |
1041 | .get_settings = fec_get_settings, | |
1042 | .set_settings = fec_set_settings, | |
1043 | .nway_reset = fec_nway_reset, | |
1044 | .get_link = ethtool_op_get_link, | |
1045 | .get_msglevel = fec_get_msglevel, | |
1046 | .set_msglevel = fec_set_msglevel, | |
1047 | .get_tx_csum = ethtool_op_get_tx_csum, | |
1048 | .set_tx_csum = ethtool_op_set_tx_csum, /* local! */ | |
1049 | .get_sg = ethtool_op_get_sg, | |
1050 | .set_sg = ethtool_op_set_sg, | |
1051 | .get_regs = fec_get_regs, | |
1052 | }; | |
1053 | ||
1054 | static int fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1055 | { | |
1056 | struct fec_enet_private *fep = netdev_priv(dev); | |
1057 | struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data; | |
1058 | unsigned long flags; | |
1059 | int rc; | |
1060 | ||
1061 | if (!netif_running(dev)) | |
1062 | return -EINVAL; | |
1063 | ||
1064 | spin_lock_irqsave(&fep->lock, flags); | |
1065 | rc = generic_mii_ioctl(&fep->mii_if, mii, cmd, NULL); | |
1066 | spin_unlock_irqrestore(&fep->lock, flags); | |
1067 | return rc; | |
1068 | } | |
1069 | ||
1070 | int fec_8xx_init_one(const struct fec_platform_info *fpi, | |
1071 | struct net_device **devp) | |
1072 | { | |
1073 | immap_t *immap = (immap_t *) IMAP_ADDR; | |
1074 | static int fec_8xx_version_printed = 0; | |
1075 | struct net_device *dev = NULL; | |
1076 | struct fec_enet_private *fep = NULL; | |
1077 | fec_t *fecp = NULL; | |
1078 | int i; | |
1079 | int err = 0; | |
1080 | int registered = 0; | |
1081 | __u32 siel; | |
1082 | ||
1083 | *devp = NULL; | |
1084 | ||
1085 | switch (fpi->fec_no) { | |
1086 | case 0: | |
1087 | fecp = &((immap_t *) IMAP_ADDR)->im_cpm.cp_fec; | |
1088 | break; | |
1089 | #ifdef CONFIG_DUET | |
1090 | case 1: | |
1091 | fecp = &((immap_t *) IMAP_ADDR)->im_cpm.cp_fec2; | |
1092 | break; | |
1093 | #endif | |
1094 | default: | |
1095 | return -EINVAL; | |
1096 | } | |
1097 | ||
1098 | if (fec_8xx_version_printed++ == 0) | |
1099 | printk(KERN_INFO "%s", version); | |
1100 | ||
1101 | i = sizeof(*fep) + (sizeof(struct sk_buff **) * | |
1102 | (fpi->rx_ring + fpi->tx_ring)); | |
1103 | ||
1104 | dev = alloc_etherdev(i); | |
1105 | if (!dev) { | |
1106 | err = -ENOMEM; | |
1107 | goto err; | |
1108 | } | |
1109 | SET_MODULE_OWNER(dev); | |
1110 | ||
1111 | fep = netdev_priv(dev); | |
1112 | ||
1113 | /* partial reset of FEC */ | |
1114 | fec_whack_reset(fecp); | |
1115 | ||
1116 | /* point rx_skbuff, tx_skbuff */ | |
1117 | fep->rx_skbuff = (struct sk_buff **)&fep[1]; | |
1118 | fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring; | |
1119 | ||
1120 | fep->fecp = fecp; | |
1121 | fep->fpi = fpi; | |
1122 | ||
1123 | /* init locks */ | |
1124 | spin_lock_init(&fep->lock); | |
1125 | spin_lock_init(&fep->tx_lock); | |
1126 | ||
1127 | /* | |
1128 | * Set the Ethernet address. | |
1129 | */ | |
1130 | for (i = 0; i < 6; i++) | |
1131 | dev->dev_addr[i] = fpi->macaddr[i]; | |
1132 | ||
1133 | fep->ring_base = dma_alloc_coherent(NULL, | |
1134 | (fpi->tx_ring + fpi->rx_ring) * | |
1135 | sizeof(cbd_t), &fep->ring_mem_addr, | |
1136 | GFP_KERNEL); | |
1137 | if (fep->ring_base == NULL) { | |
1138 | printk(KERN_ERR DRV_MODULE_NAME | |
1139 | ": %s dma alloc failed.\n", dev->name); | |
1140 | err = -ENOMEM; | |
1141 | goto err; | |
1142 | } | |
1143 | ||
1144 | /* | |
1145 | * Set receive and transmit descriptor base. | |
1146 | */ | |
1147 | fep->rx_bd_base = fep->ring_base; | |
1148 | fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring; | |
1149 | ||
1150 | /* initialize ring size variables */ | |
1151 | fep->tx_ring = fpi->tx_ring; | |
1152 | fep->rx_ring = fpi->rx_ring; | |
1153 | ||
1154 | /* SIU interrupt */ | |
1155 | if (fpi->phy_irq != -1 && | |
1156 | (fpi->phy_irq >= SIU_IRQ0 && fpi->phy_irq < SIU_LEVEL7)) { | |
1157 | ||
1158 | siel = in_be32(&immap->im_siu_conf.sc_siel); | |
1159 | if ((fpi->phy_irq & 1) == 0) | |
1160 | siel |= (0x80000000 >> fpi->phy_irq); | |
1161 | else | |
1162 | siel &= ~(0x80000000 >> (fpi->phy_irq & ~1)); | |
1163 | out_be32(&immap->im_siu_conf.sc_siel, siel); | |
1164 | } | |
1165 | ||
1166 | /* | |
1167 | * The FEC Ethernet specific entries in the device structure. | |
1168 | */ | |
1169 | dev->open = fec_enet_open; | |
1170 | dev->hard_start_xmit = fec_enet_start_xmit; | |
1171 | dev->tx_timeout = fec_timeout; | |
1172 | dev->watchdog_timeo = TX_TIMEOUT; | |
1173 | dev->stop = fec_enet_close; | |
1174 | dev->get_stats = fec_enet_get_stats; | |
1175 | dev->set_multicast_list = fec_set_multicast_list; | |
1176 | dev->set_mac_address = fec_set_mac_address; | |
1177 | if (fpi->use_napi) { | |
1178 | dev->poll = fec_enet_poll; | |
1179 | dev->weight = fpi->napi_weight; | |
1180 | } | |
1181 | dev->ethtool_ops = &fec_ethtool_ops; | |
1182 | dev->do_ioctl = fec_ioctl; | |
1183 | ||
1184 | fep->fec_phy_speed = | |
1185 | ((((fpi->sys_clk + 4999999) / 2500000) / 2) & 0x3F) << 1; | |
1186 | ||
1187 | init_timer(&fep->phy_timer_list); | |
1188 | ||
1189 | /* partial reset of FEC so that only MII works */ | |
1190 | FW(fecp, mii_speed, fep->fec_phy_speed); | |
1191 | FW(fecp, ievent, 0xffc0); | |
1192 | FW(fecp, ivec, (fpi->fec_irq / 2) << 29); | |
1193 | FW(fecp, imask, 0); | |
1194 | FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ | |
1195 | FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); | |
1196 | ||
1197 | netif_carrier_off(dev); | |
1198 | ||
1199 | err = register_netdev(dev); | |
1200 | if (err != 0) | |
1201 | goto err; | |
1202 | registered = 1; | |
1203 | ||
1204 | if (fpi->use_mdio) { | |
1205 | fep->mii_if.dev = dev; | |
1206 | fep->mii_if.mdio_read = fec_mii_read; | |
1207 | fep->mii_if.mdio_write = fec_mii_write; | |
1208 | fep->mii_if.phy_id_mask = 0x1f; | |
1209 | fep->mii_if.reg_num_mask = 0x1f; | |
1210 | fep->mii_if.phy_id = fec_mii_phy_id_detect(dev); | |
1211 | } | |
1212 | ||
1213 | *devp = dev; | |
1214 | ||
1215 | return 0; | |
1216 | ||
1217 | err: | |
1218 | if (dev != NULL) { | |
1219 | if (fecp != NULL) | |
1220 | fec_whack_reset(fecp); | |
1221 | ||
1222 | if (registered) | |
1223 | unregister_netdev(dev); | |
1224 | ||
1225 | if (fep != NULL) { | |
1226 | if (fep->ring_base) | |
1227 | dma_free_coherent(NULL, | |
1228 | (fpi->tx_ring + | |
1229 | fpi->rx_ring) * | |
1230 | sizeof(cbd_t), fep->ring_base, | |
1231 | fep->ring_mem_addr); | |
1232 | } | |
1233 | free_netdev(dev); | |
1234 | } | |
1235 | return err; | |
1236 | } | |
1237 | ||
1238 | int fec_8xx_cleanup_one(struct net_device *dev) | |
1239 | { | |
1240 | struct fec_enet_private *fep = netdev_priv(dev); | |
1241 | fec_t *fecp = fep->fecp; | |
1242 | const struct fec_platform_info *fpi = fep->fpi; | |
1243 | ||
1244 | fec_whack_reset(fecp); | |
1245 | ||
1246 | unregister_netdev(dev); | |
1247 | ||
1248 | dma_free_coherent(NULL, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t), | |
1249 | fep->ring_base, fep->ring_mem_addr); | |
1250 | ||
1251 | free_netdev(dev); | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | /**************************************************************************************/ | |
1257 | /**************************************************************************************/ | |
1258 | /**************************************************************************************/ | |
1259 | ||
1260 | static int __init fec_8xx_init(void) | |
1261 | { | |
1262 | return fec_8xx_platform_init(); | |
1263 | } | |
1264 | ||
1265 | static void __exit fec_8xx_cleanup(void) | |
1266 | { | |
1267 | fec_8xx_platform_cleanup(); | |
1268 | } | |
1269 | ||
1270 | /**************************************************************************************/ | |
1271 | /**************************************************************************************/ | |
1272 | /**************************************************************************************/ | |
1273 | ||
1274 | module_init(fec_8xx_init); | |
1275 | module_exit(fec_8xx_cleanup); |