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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 | ||
1da177e4 LT |
13 | #include <linux/module.h> |
14 | #include <linux/kernel.h> | |
15 | #include <linux/types.h> | |
16 | #include <linux/sched.h> | |
17 | #include <linux/string.h> | |
18 | #include <linux/ptrace.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/ioport.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/pci.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/delay.h> | |
26 | #include <linux/netdevice.h> | |
27 | #include <linux/etherdevice.h> | |
28 | #include <linux/skbuff.h> | |
29 | #include <linux/spinlock.h> | |
30 | #include <linux/mii.h> | |
31 | #include <linux/ethtool.h> | |
32 | #include <linux/bitops.h> | |
33 | ||
34 | #include <asm/8xx_immap.h> | |
35 | #include <asm/pgtable.h> | |
36 | #include <asm/mpc8xx.h> | |
37 | #include <asm/irq.h> | |
38 | #include <asm/uaccess.h> | |
39 | #include <asm/commproc.h> | |
40 | #include <asm/dma-mapping.h> | |
41 | ||
42 | #include "fec_8xx.h" | |
43 | ||
44 | /*************************************************/ | |
45 | ||
46 | #define FEC_MAX_MULTICAST_ADDRS 64 | |
47 | ||
48 | /*************************************************/ | |
49 | ||
50 | static char version[] __devinitdata = | |
51 | DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n"; | |
52 | ||
53 | MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>"); | |
54 | MODULE_DESCRIPTION("Motorola 8xx FEC ethernet driver"); | |
55 | MODULE_LICENSE("GPL"); | |
56 | ||
8d3b33f6 RR |
57 | int fec_8xx_debug = -1; /* -1 == use FEC_8XX_DEF_MSG_ENABLE as value */ |
58 | module_param(fec_8xx_debug, int, 0); | |
1da177e4 LT |
59 | MODULE_PARM_DESC(fec_8xx_debug, |
60 | "FEC 8xx bitmapped debugging message enable value"); | |
61 | ||
1da177e4 LT |
62 | |
63 | /*************************************************/ | |
64 | ||
65 | /* | |
66 | * Delay to wait for FEC reset command to complete (in us) | |
67 | */ | |
68 | #define FEC_RESET_DELAY 50 | |
69 | ||
70 | /*****************************************************************************************/ | |
71 | ||
72 | static void fec_whack_reset(fec_t * fecp) | |
73 | { | |
74 | int i; | |
75 | ||
76 | /* | |
77 | * Whack a reset. We should wait for this. | |
78 | */ | |
79 | FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET); | |
80 | for (i = 0; | |
81 | (FR(fecp, ecntrl) & FEC_ECNTRL_RESET) != 0 && i < FEC_RESET_DELAY; | |
82 | i++) | |
83 | udelay(1); | |
84 | ||
85 | if (i == FEC_RESET_DELAY) | |
86 | printk(KERN_WARNING "FEC Reset timeout!\n"); | |
87 | ||
88 | } | |
89 | ||
90 | /****************************************************************************/ | |
91 | ||
92 | /* | |
93 | * Transmitter timeout. | |
94 | */ | |
95 | #define TX_TIMEOUT (2*HZ) | |
96 | ||
97 | /****************************************************************************/ | |
98 | ||
99 | /* | |
100 | * Returns the CRC needed when filling in the hash table for | |
101 | * multicast group filtering | |
102 | * pAddr must point to a MAC address (6 bytes) | |
103 | */ | |
104 | static __u32 fec_mulicast_calc_crc(char *pAddr) | |
105 | { | |
106 | u8 byte; | |
107 | int byte_count; | |
108 | int bit_count; | |
109 | __u32 crc = 0xffffffff; | |
110 | u8 msb; | |
111 | ||
112 | for (byte_count = 0; byte_count < 6; byte_count++) { | |
113 | byte = pAddr[byte_count]; | |
114 | for (bit_count = 0; bit_count < 8; bit_count++) { | |
115 | msb = crc >> 31; | |
116 | crc <<= 1; | |
117 | if (msb ^ (byte & 0x1)) { | |
118 | crc ^= FEC_CRC_POLY; | |
119 | } | |
120 | byte >>= 1; | |
121 | } | |
122 | } | |
123 | return (crc); | |
124 | } | |
125 | ||
126 | /* | |
127 | * Set or clear the multicast filter for this adaptor. | |
128 | * Skeleton taken from sunlance driver. | |
129 | * The CPM Ethernet implementation allows Multicast as well as individual | |
130 | * MAC address filtering. Some of the drivers check to make sure it is | |
131 | * a group multicast address, and discard those that are not. I guess I | |
132 | * will do the same for now, but just remove the test if you want | |
133 | * individual filtering as well (do the upper net layers want or support | |
134 | * this kind of feature?). | |
135 | */ | |
136 | static void fec_set_multicast_list(struct net_device *dev) | |
137 | { | |
138 | struct fec_enet_private *fep = netdev_priv(dev); | |
139 | fec_t *fecp = fep->fecp; | |
140 | struct dev_mc_list *pmc; | |
141 | __u32 crc; | |
142 | int temp; | |
143 | __u32 csrVal; | |
144 | int hash_index; | |
145 | __u32 hthi, htlo; | |
146 | unsigned long flags; | |
147 | ||
148 | ||
149 | if ((dev->flags & IFF_PROMISC) != 0) { | |
150 | ||
151 | spin_lock_irqsave(&fep->lock, flags); | |
152 | FS(fecp, r_cntrl, FEC_RCNTRL_PROM); | |
153 | spin_unlock_irqrestore(&fep->lock, flags); | |
154 | ||
155 | /* | |
156 | * Log any net taps. | |
157 | */ | |
158 | printk(KERN_WARNING DRV_MODULE_NAME | |
159 | ": %s: Promiscuous mode enabled.\n", dev->name); | |
160 | return; | |
161 | ||
162 | } | |
163 | ||
164 | if ((dev->flags & IFF_ALLMULTI) != 0 || | |
165 | dev->mc_count > FEC_MAX_MULTICAST_ADDRS) { | |
166 | /* | |
167 | * Catch all multicast addresses, set the filter to all 1's. | |
168 | */ | |
169 | hthi = 0xffffffffU; | |
170 | htlo = 0xffffffffU; | |
171 | } else { | |
172 | hthi = 0; | |
173 | htlo = 0; | |
174 | ||
175 | /* | |
176 | * Now populate the hash table | |
177 | */ | |
178 | for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next) { | |
179 | crc = fec_mulicast_calc_crc(pmc->dmi_addr); | |
180 | temp = (crc & 0x3f) >> 1; | |
181 | hash_index = ((temp & 0x01) << 4) | | |
182 | ((temp & 0x02) << 2) | | |
183 | ((temp & 0x04)) | | |
184 | ((temp & 0x08) >> 2) | | |
185 | ((temp & 0x10) >> 4); | |
186 | csrVal = (1 << hash_index); | |
187 | if (crc & 1) | |
188 | hthi |= csrVal; | |
189 | else | |
190 | htlo |= csrVal; | |
191 | } | |
192 | } | |
193 | ||
194 | spin_lock_irqsave(&fep->lock, flags); | |
195 | FC(fecp, r_cntrl, FEC_RCNTRL_PROM); | |
196 | FW(fecp, hash_table_high, hthi); | |
197 | FW(fecp, hash_table_low, htlo); | |
198 | spin_unlock_irqrestore(&fep->lock, flags); | |
199 | } | |
200 | ||
201 | static int fec_set_mac_address(struct net_device *dev, void *addr) | |
202 | { | |
203 | struct sockaddr *mac = addr; | |
204 | struct fec_enet_private *fep = netdev_priv(dev); | |
205 | struct fec *fecp = fep->fecp; | |
206 | int i; | |
207 | __u32 addrhi, addrlo; | |
208 | unsigned long flags; | |
209 | ||
210 | /* Get pointer to SCC area in parameter RAM. */ | |
211 | for (i = 0; i < 6; i++) | |
212 | dev->dev_addr[i] = mac->sa_data[i]; | |
213 | ||
214 | /* | |
215 | * Set station address. | |
216 | */ | |
217 | addrhi = ((__u32) dev->dev_addr[0] << 24) | | |
218 | ((__u32) dev->dev_addr[1] << 16) | | |
219 | ((__u32) dev->dev_addr[2] << 8) | | |
220 | (__u32) dev->dev_addr[3]; | |
221 | addrlo = ((__u32) dev->dev_addr[4] << 24) | | |
222 | ((__u32) dev->dev_addr[5] << 16); | |
223 | ||
224 | spin_lock_irqsave(&fep->lock, flags); | |
225 | FW(fecp, addr_low, addrhi); | |
226 | FW(fecp, addr_high, addrlo); | |
227 | spin_unlock_irqrestore(&fep->lock, flags); | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | /* | |
233 | * This function is called to start or restart the FEC during a link | |
234 | * change. This only happens when switching between half and full | |
235 | * duplex. | |
236 | */ | |
237 | void fec_restart(struct net_device *dev, int duplex, int speed) | |
238 | { | |
239 | #ifdef CONFIG_DUET | |
240 | immap_t *immap = (immap_t *) IMAP_ADDR; | |
241 | __u32 cptr; | |
242 | #endif | |
243 | struct fec_enet_private *fep = netdev_priv(dev); | |
244 | struct fec *fecp = fep->fecp; | |
245 | const struct fec_platform_info *fpi = fep->fpi; | |
246 | cbd_t *bdp; | |
247 | struct sk_buff *skb; | |
248 | int i; | |
249 | __u32 addrhi, addrlo; | |
250 | ||
251 | fec_whack_reset(fep->fecp); | |
252 | ||
253 | /* | |
254 | * Set station address. | |
255 | */ | |
256 | addrhi = ((__u32) dev->dev_addr[0] << 24) | | |
257 | ((__u32) dev->dev_addr[1] << 16) | | |
258 | ((__u32) dev->dev_addr[2] << 8) | | |
259 | (__u32) dev->dev_addr[3]; | |
260 | addrlo = ((__u32) dev->dev_addr[4] << 24) | | |
261 | ((__u32) dev->dev_addr[5] << 16); | |
262 | FW(fecp, addr_low, addrhi); | |
263 | FW(fecp, addr_high, addrlo); | |
264 | ||
265 | /* | |
266 | * Reset all multicast. | |
267 | */ | |
268 | FW(fecp, hash_table_high, 0); | |
269 | FW(fecp, hash_table_low, 0); | |
270 | ||
271 | /* | |
272 | * Set maximum receive buffer size. | |
273 | */ | |
274 | FW(fecp, r_buff_size, PKT_MAXBLR_SIZE); | |
275 | FW(fecp, r_hash, PKT_MAXBUF_SIZE); | |
276 | ||
277 | /* | |
278 | * Set receive and transmit descriptor base. | |
279 | */ | |
280 | FW(fecp, r_des_start, iopa((__u32) (fep->rx_bd_base))); | |
281 | FW(fecp, x_des_start, iopa((__u32) (fep->tx_bd_base))); | |
282 | ||
283 | fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; | |
284 | fep->tx_free = fep->tx_ring; | |
285 | fep->cur_rx = fep->rx_bd_base; | |
286 | ||
287 | /* | |
288 | * Reset SKB receive buffers | |
289 | */ | |
290 | for (i = 0; i < fep->rx_ring; i++) { | |
291 | if ((skb = fep->rx_skbuff[i]) == NULL) | |
292 | continue; | |
293 | fep->rx_skbuff[i] = NULL; | |
294 | dev_kfree_skb(skb); | |
295 | } | |
296 | ||
297 | /* | |
298 | * Initialize the receive buffer descriptors. | |
299 | */ | |
300 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { | |
301 | skb = dev_alloc_skb(ENET_RX_FRSIZE); | |
302 | if (skb == NULL) { | |
303 | printk(KERN_WARNING DRV_MODULE_NAME | |
304 | ": %s Memory squeeze, unable to allocate skb\n", | |
305 | dev->name); | |
306 | fep->stats.rx_dropped++; | |
307 | break; | |
308 | } | |
309 | fep->rx_skbuff[i] = skb; | |
310 | skb->dev = dev; | |
311 | CBDW_BUFADDR(bdp, dma_map_single(NULL, skb->data, | |
312 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
313 | DMA_FROM_DEVICE)); | |
314 | CBDW_DATLEN(bdp, 0); /* zero */ | |
315 | CBDW_SC(bdp, BD_ENET_RX_EMPTY | | |
316 | ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP)); | |
317 | } | |
318 | /* | |
319 | * if we failed, fillup remainder | |
320 | */ | |
321 | for (; i < fep->rx_ring; i++, bdp++) { | |
322 | fep->rx_skbuff[i] = NULL; | |
323 | CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP); | |
324 | } | |
325 | ||
326 | /* | |
327 | * Reset SKB transmit buffers. | |
328 | */ | |
329 | for (i = 0; i < fep->tx_ring; i++) { | |
330 | if ((skb = fep->tx_skbuff[i]) == NULL) | |
331 | continue; | |
332 | fep->tx_skbuff[i] = NULL; | |
333 | dev_kfree_skb(skb); | |
334 | } | |
335 | ||
336 | /* | |
337 | * ...and the same for transmit. | |
338 | */ | |
339 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { | |
340 | fep->tx_skbuff[i] = NULL; | |
341 | CBDW_BUFADDR(bdp, virt_to_bus(NULL)); | |
342 | CBDW_DATLEN(bdp, 0); | |
343 | CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP); | |
344 | } | |
345 | ||
346 | /* | |
347 | * Enable big endian and don't care about SDMA FC. | |
348 | */ | |
349 | FW(fecp, fun_code, 0x78000000); | |
350 | ||
351 | /* | |
352 | * Set MII speed. | |
353 | */ | |
354 | FW(fecp, mii_speed, fep->fec_phy_speed); | |
355 | ||
356 | /* | |
357 | * Clear any outstanding interrupt. | |
358 | */ | |
359 | FW(fecp, ievent, 0xffc0); | |
360 | FW(fecp, ivec, (fpi->fec_irq / 2) << 29); | |
361 | ||
362 | /* | |
363 | * adjust to speed (only for DUET & RMII) | |
364 | */ | |
365 | #ifdef CONFIG_DUET | |
366 | cptr = in_be32(&immap->im_cpm.cp_cptr); | |
367 | switch (fpi->fec_no) { | |
368 | case 0: | |
369 | /* | |
370 | * check if in RMII mode | |
371 | */ | |
372 | if ((cptr & 0x100) == 0) | |
373 | break; | |
374 | ||
375 | if (speed == 10) | |
376 | cptr |= 0x0000010; | |
377 | else if (speed == 100) | |
378 | cptr &= ~0x0000010; | |
379 | break; | |
380 | case 1: | |
381 | /* | |
382 | * check if in RMII mode | |
383 | */ | |
384 | if ((cptr & 0x80) == 0) | |
385 | break; | |
386 | ||
387 | if (speed == 10) | |
388 | cptr |= 0x0000008; | |
389 | else if (speed == 100) | |
390 | cptr &= ~0x0000008; | |
391 | break; | |
392 | default: | |
393 | break; | |
394 | } | |
395 | out_be32(&immap->im_cpm.cp_cptr, cptr); | |
396 | #endif | |
397 | ||
398 | FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ | |
399 | /* | |
400 | * adjust to duplex mode | |
401 | */ | |
402 | if (duplex) { | |
403 | FC(fecp, r_cntrl, FEC_RCNTRL_DRT); | |
404 | FS(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD enable */ | |
405 | } else { | |
406 | FS(fecp, r_cntrl, FEC_RCNTRL_DRT); | |
407 | FC(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD disable */ | |
408 | } | |
409 | ||
410 | /* | |
411 | * Enable interrupts we wish to service. | |
412 | */ | |
413 | FW(fecp, imask, FEC_ENET_TXF | FEC_ENET_TXB | | |
414 | FEC_ENET_RXF | FEC_ENET_RXB); | |
415 | ||
416 | /* | |
417 | * And last, enable the transmit and receive processing. | |
418 | */ | |
419 | FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); | |
420 | FW(fecp, r_des_active, 0x01000000); | |
421 | } | |
422 | ||
423 | void fec_stop(struct net_device *dev) | |
424 | { | |
425 | struct fec_enet_private *fep = netdev_priv(dev); | |
426 | fec_t *fecp = fep->fecp; | |
427 | struct sk_buff *skb; | |
428 | int i; | |
429 | ||
430 | if ((FR(fecp, ecntrl) & FEC_ECNTRL_ETHER_EN) == 0) | |
431 | return; /* already down */ | |
432 | ||
433 | FW(fecp, x_cntrl, 0x01); /* Graceful transmit stop */ | |
434 | for (i = 0; ((FR(fecp, ievent) & 0x10000000) == 0) && | |
435 | i < FEC_RESET_DELAY; i++) | |
436 | udelay(1); | |
437 | ||
438 | if (i == FEC_RESET_DELAY) | |
439 | printk(KERN_WARNING DRV_MODULE_NAME | |
440 | ": %s FEC timeout on graceful transmit stop\n", | |
441 | dev->name); | |
442 | /* | |
443 | * Disable FEC. Let only MII interrupts. | |
444 | */ | |
445 | FW(fecp, imask, 0); | |
446 | FW(fecp, ecntrl, ~FEC_ECNTRL_ETHER_EN); | |
447 | ||
448 | /* | |
449 | * Reset SKB transmit buffers. | |
450 | */ | |
451 | for (i = 0; i < fep->tx_ring; i++) { | |
452 | if ((skb = fep->tx_skbuff[i]) == NULL) | |
453 | continue; | |
454 | fep->tx_skbuff[i] = NULL; | |
455 | dev_kfree_skb(skb); | |
456 | } | |
457 | ||
458 | /* | |
459 | * Reset SKB receive buffers | |
460 | */ | |
461 | for (i = 0; i < fep->rx_ring; i++) { | |
462 | if ((skb = fep->rx_skbuff[i]) == NULL) | |
463 | continue; | |
464 | fep->rx_skbuff[i] = NULL; | |
465 | dev_kfree_skb(skb); | |
466 | } | |
467 | } | |
468 | ||
469 | /* common receive function */ | |
470 | static int fec_enet_rx_common(struct net_device *dev, int *budget) | |
471 | { | |
472 | struct fec_enet_private *fep = netdev_priv(dev); | |
473 | fec_t *fecp = fep->fecp; | |
474 | const struct fec_platform_info *fpi = fep->fpi; | |
475 | cbd_t *bdp; | |
476 | struct sk_buff *skb, *skbn, *skbt; | |
477 | int received = 0; | |
478 | __u16 pkt_len, sc; | |
479 | int curidx; | |
480 | int rx_work_limit; | |
481 | ||
482 | if (fpi->use_napi) { | |
483 | rx_work_limit = min(dev->quota, *budget); | |
484 | ||
485 | if (!netif_running(dev)) | |
486 | return 0; | |
487 | } | |
488 | ||
489 | /* | |
490 | * First, grab all of the stats for the incoming packet. | |
491 | * These get messed up if we get called due to a busy condition. | |
492 | */ | |
493 | bdp = fep->cur_rx; | |
494 | ||
495 | /* clear RX status bits for napi*/ | |
496 | if (fpi->use_napi) | |
497 | FW(fecp, ievent, FEC_ENET_RXF | FEC_ENET_RXB); | |
498 | ||
499 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { | |
500 | ||
501 | curidx = bdp - fep->rx_bd_base; | |
502 | ||
503 | /* | |
504 | * Since we have allocated space to hold a complete frame, | |
505 | * the last indicator should be set. | |
506 | */ | |
507 | if ((sc & BD_ENET_RX_LAST) == 0) | |
508 | printk(KERN_WARNING DRV_MODULE_NAME | |
509 | ": %s rcv is not +last\n", | |
510 | dev->name); | |
511 | ||
512 | /* | |
513 | * Check for errors. | |
514 | */ | |
515 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | | |
516 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { | |
517 | fep->stats.rx_errors++; | |
518 | /* Frame too long or too short. */ | |
519 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) | |
520 | fep->stats.rx_length_errors++; | |
521 | /* Frame alignment */ | |
522 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) | |
523 | fep->stats.rx_frame_errors++; | |
524 | /* CRC Error */ | |
525 | if (sc & BD_ENET_RX_CR) | |
526 | fep->stats.rx_crc_errors++; | |
527 | /* FIFO overrun */ | |
528 | if (sc & BD_ENET_RX_OV) | |
529 | fep->stats.rx_crc_errors++; | |
530 | ||
531 | skbn = fep->rx_skbuff[curidx]; | |
532 | BUG_ON(skbn == NULL); | |
533 | ||
534 | } else { | |
535 | ||
536 | /* napi, got packet but no quota */ | |
537 | if (fpi->use_napi && --rx_work_limit < 0) | |
538 | break; | |
539 | ||
540 | skb = fep->rx_skbuff[curidx]; | |
541 | BUG_ON(skb == NULL); | |
542 | ||
543 | /* | |
544 | * Process the incoming frame. | |
545 | */ | |
546 | fep->stats.rx_packets++; | |
547 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ | |
548 | fep->stats.rx_bytes += pkt_len + 4; | |
549 | ||
550 | if (pkt_len <= fpi->rx_copybreak) { | |
551 | /* +2 to make IP header L1 cache aligned */ | |
552 | skbn = dev_alloc_skb(pkt_len + 2); | |
553 | if (skbn != NULL) { | |
554 | skb_reserve(skbn, 2); /* align IP header */ | |
555 | memcpy(skbn->data, skb->data, pkt_len); | |
556 | /* swap */ | |
557 | skbt = skb; | |
558 | skb = skbn; | |
559 | skbn = skbt; | |
560 | } | |
561 | } else | |
562 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); | |
563 | ||
564 | if (skbn != NULL) { | |
565 | skb->dev = dev; | |
566 | skb_put(skb, pkt_len); /* Make room */ | |
567 | skb->protocol = eth_type_trans(skb, dev); | |
568 | received++; | |
569 | if (!fpi->use_napi) | |
570 | netif_rx(skb); | |
571 | else | |
572 | netif_receive_skb(skb); | |
573 | } else { | |
574 | printk(KERN_WARNING DRV_MODULE_NAME | |
575 | ": %s Memory squeeze, dropping packet.\n", | |
576 | dev->name); | |
577 | fep->stats.rx_dropped++; | |
578 | skbn = skb; | |
579 | } | |
580 | } | |
581 | ||
582 | fep->rx_skbuff[curidx] = skbn; | |
583 | CBDW_BUFADDR(bdp, dma_map_single(NULL, skbn->data, | |
584 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
585 | DMA_FROM_DEVICE)); | |
586 | CBDW_DATLEN(bdp, 0); | |
587 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); | |
588 | ||
589 | /* | |
590 | * Update BD pointer to next entry. | |
591 | */ | |
592 | if ((sc & BD_ENET_RX_WRAP) == 0) | |
593 | bdp++; | |
594 | else | |
595 | bdp = fep->rx_bd_base; | |
596 | ||
597 | /* | |
598 | * Doing this here will keep the FEC running while we process | |
599 | * incoming frames. On a heavily loaded network, we should be | |
600 | * able to keep up at the expense of system resources. | |
601 | */ | |
602 | FW(fecp, r_des_active, 0x01000000); | |
603 | } | |
604 | ||
605 | fep->cur_rx = bdp; | |
606 | ||
607 | if (fpi->use_napi) { | |
608 | dev->quota -= received; | |
609 | *budget -= received; | |
610 | ||
611 | if (rx_work_limit < 0) | |
612 | return 1; /* not done */ | |
613 | ||
614 | /* done */ | |
615 | netif_rx_complete(dev); | |
616 | ||
617 | /* enable RX interrupt bits */ | |
618 | FS(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB); | |
619 | } | |
620 | ||
621 | return 0; | |
622 | } | |
623 | ||
624 | static void fec_enet_tx(struct net_device *dev) | |
625 | { | |
626 | struct fec_enet_private *fep = netdev_priv(dev); | |
627 | cbd_t *bdp; | |
628 | struct sk_buff *skb; | |
629 | int dirtyidx, do_wake; | |
630 | __u16 sc; | |
631 | ||
632 | spin_lock(&fep->lock); | |
633 | bdp = fep->dirty_tx; | |
634 | ||
635 | do_wake = 0; | |
636 | while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) { | |
637 | ||
638 | dirtyidx = bdp - fep->tx_bd_base; | |
639 | ||
640 | if (fep->tx_free == fep->tx_ring) | |
641 | break; | |
642 | ||
643 | skb = fep->tx_skbuff[dirtyidx]; | |
644 | ||
645 | /* | |
646 | * Check for errors. | |
647 | */ | |
648 | if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | | |
649 | BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) { | |
650 | fep->stats.tx_errors++; | |
651 | if (sc & BD_ENET_TX_HB) /* No heartbeat */ | |
652 | fep->stats.tx_heartbeat_errors++; | |
653 | if (sc & BD_ENET_TX_LC) /* Late collision */ | |
654 | fep->stats.tx_window_errors++; | |
655 | if (sc & BD_ENET_TX_RL) /* Retrans limit */ | |
656 | fep->stats.tx_aborted_errors++; | |
657 | if (sc & BD_ENET_TX_UN) /* Underrun */ | |
658 | fep->stats.tx_fifo_errors++; | |
659 | if (sc & BD_ENET_TX_CSL) /* Carrier lost */ | |
660 | fep->stats.tx_carrier_errors++; | |
661 | } else | |
662 | fep->stats.tx_packets++; | |
663 | ||
664 | if (sc & BD_ENET_TX_READY) | |
665 | printk(KERN_WARNING DRV_MODULE_NAME | |
666 | ": %s HEY! Enet xmit interrupt and TX_READY.\n", | |
667 | dev->name); | |
668 | ||
669 | /* | |
670 | * Deferred means some collisions occurred during transmit, | |
671 | * but we eventually sent the packet OK. | |
672 | */ | |
673 | if (sc & BD_ENET_TX_DEF) | |
674 | fep->stats.collisions++; | |
675 | ||
676 | /* | |
677 | * Free the sk buffer associated with this last transmit. | |
678 | */ | |
679 | dev_kfree_skb_irq(skb); | |
680 | fep->tx_skbuff[dirtyidx] = NULL; | |
681 | ||
682 | /* | |
683 | * Update pointer to next buffer descriptor to be transmitted. | |
684 | */ | |
685 | if ((sc & BD_ENET_TX_WRAP) == 0) | |
686 | bdp++; | |
687 | else | |
688 | bdp = fep->tx_bd_base; | |
689 | ||
690 | /* | |
691 | * Since we have freed up a buffer, the ring is no longer | |
692 | * full. | |
693 | */ | |
694 | if (!fep->tx_free++) | |
695 | do_wake = 1; | |
696 | } | |
697 | ||
698 | fep->dirty_tx = bdp; | |
699 | ||
700 | spin_unlock(&fep->lock); | |
701 | ||
702 | if (do_wake && netif_queue_stopped(dev)) | |
703 | netif_wake_queue(dev); | |
704 | } | |
705 | ||
706 | /* | |
707 | * The interrupt handler. | |
708 | * This is called from the MPC core interrupt. | |
709 | */ | |
710 | static irqreturn_t | |
711 | fec_enet_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
712 | { | |
713 | struct net_device *dev = dev_id; | |
714 | struct fec_enet_private *fep; | |
715 | const struct fec_platform_info *fpi; | |
716 | fec_t *fecp; | |
717 | __u32 int_events; | |
718 | __u32 int_events_napi; | |
719 | ||
720 | if (unlikely(dev == NULL)) | |
721 | return IRQ_NONE; | |
722 | ||
723 | fep = netdev_priv(dev); | |
724 | fecp = fep->fecp; | |
725 | fpi = fep->fpi; | |
726 | ||
727 | /* | |
728 | * Get the interrupt events that caused us to be here. | |
729 | */ | |
730 | while ((int_events = FR(fecp, ievent) & FR(fecp, imask)) != 0) { | |
731 | ||
732 | if (!fpi->use_napi) | |
733 | FW(fecp, ievent, int_events); | |
734 | else { | |
735 | int_events_napi = int_events & ~(FEC_ENET_RXF | FEC_ENET_RXB); | |
736 | FW(fecp, ievent, int_events_napi); | |
737 | } | |
738 | ||
739 | if ((int_events & (FEC_ENET_HBERR | FEC_ENET_BABR | | |
740 | FEC_ENET_BABT | FEC_ENET_EBERR)) != 0) | |
741 | printk(KERN_WARNING DRV_MODULE_NAME | |
742 | ": %s FEC ERROR(s) 0x%x\n", | |
743 | dev->name, int_events); | |
744 | ||
745 | if ((int_events & FEC_ENET_RXF) != 0) { | |
746 | if (!fpi->use_napi) | |
747 | fec_enet_rx_common(dev, NULL); | |
748 | else { | |
749 | if (netif_rx_schedule_prep(dev)) { | |
750 | /* disable rx interrupts */ | |
751 | FC(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB); | |
752 | __netif_rx_schedule(dev); | |
753 | } else { | |
754 | printk(KERN_ERR DRV_MODULE_NAME | |
755 | ": %s driver bug! interrupt while in poll!\n", | |
756 | dev->name); | |
757 | FC(fecp, imask, FEC_ENET_RXF | FEC_ENET_RXB); | |
758 | } | |
759 | } | |
760 | } | |
761 | ||
762 | if ((int_events & FEC_ENET_TXF) != 0) | |
763 | fec_enet_tx(dev); | |
764 | } | |
765 | ||
766 | return IRQ_HANDLED; | |
767 | } | |
768 | ||
769 | /* This interrupt occurs when the PHY detects a link change. */ | |
770 | static irqreturn_t | |
771 | fec_mii_link_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
772 | { | |
773 | struct net_device *dev = dev_id; | |
774 | struct fec_enet_private *fep; | |
775 | const struct fec_platform_info *fpi; | |
776 | ||
777 | if (unlikely(dev == NULL)) | |
778 | return IRQ_NONE; | |
779 | ||
780 | fep = netdev_priv(dev); | |
781 | fpi = fep->fpi; | |
782 | ||
783 | if (!fpi->use_mdio) | |
784 | return IRQ_NONE; | |
785 | ||
786 | /* | |
787 | * Acknowledge the interrupt if possible. If we have not | |
788 | * found the PHY yet we can't process or acknowledge the | |
789 | * interrupt now. Instead we ignore this interrupt for now, | |
790 | * which we can do since it is edge triggered. It will be | |
791 | * acknowledged later by fec_enet_open(). | |
792 | */ | |
793 | if (!fep->phy) | |
794 | return IRQ_NONE; | |
795 | ||
796 | fec_mii_ack_int(dev); | |
797 | fec_mii_link_status_change_check(dev, 0); | |
798 | ||
799 | return IRQ_HANDLED; | |
800 | } | |
801 | ||
802 | ||
803 | /**********************************************************************************/ | |
804 | ||
805 | static int fec_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
806 | { | |
807 | struct fec_enet_private *fep = netdev_priv(dev); | |
808 | fec_t *fecp = fep->fecp; | |
809 | cbd_t *bdp; | |
810 | int curidx; | |
811 | unsigned long flags; | |
812 | ||
813 | spin_lock_irqsave(&fep->tx_lock, flags); | |
814 | ||
815 | /* | |
816 | * Fill in a Tx ring entry | |
817 | */ | |
818 | bdp = fep->cur_tx; | |
819 | ||
820 | if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) { | |
821 | netif_stop_queue(dev); | |
822 | spin_unlock_irqrestore(&fep->tx_lock, flags); | |
823 | ||
824 | /* | |
825 | * Ooops. All transmit buffers are full. Bail out. | |
826 | * This should not happen, since the tx queue should be stopped. | |
827 | */ | |
828 | printk(KERN_WARNING DRV_MODULE_NAME | |
829 | ": %s tx queue full!.\n", dev->name); | |
830 | return 1; | |
831 | } | |
832 | ||
833 | curidx = bdp - fep->tx_bd_base; | |
834 | /* | |
835 | * Clear all of the status flags. | |
836 | */ | |
837 | CBDC_SC(bdp, BD_ENET_TX_STATS); | |
838 | ||
839 | /* | |
840 | * Save skb pointer. | |
841 | */ | |
842 | fep->tx_skbuff[curidx] = skb; | |
843 | ||
844 | fep->stats.tx_bytes += skb->len; | |
845 | ||
846 | /* | |
847 | * Push the data cache so the CPM does not get stale memory data. | |
848 | */ | |
849 | CBDW_BUFADDR(bdp, dma_map_single(NULL, skb->data, | |
850 | skb->len, DMA_TO_DEVICE)); | |
851 | CBDW_DATLEN(bdp, skb->len); | |
852 | ||
853 | dev->trans_start = jiffies; | |
854 | ||
855 | /* | |
856 | * If this was the last BD in the ring, start at the beginning again. | |
857 | */ | |
858 | if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) | |
859 | fep->cur_tx++; | |
860 | else | |
861 | fep->cur_tx = fep->tx_bd_base; | |
862 | ||
863 | if (!--fep->tx_free) | |
864 | netif_stop_queue(dev); | |
865 | ||
866 | /* | |
867 | * Trigger transmission start | |
868 | */ | |
869 | CBDS_SC(bdp, BD_ENET_TX_READY | BD_ENET_TX_INTR | | |
870 | BD_ENET_TX_LAST | BD_ENET_TX_TC); | |
871 | FW(fecp, x_des_active, 0x01000000); | |
872 | ||
873 | spin_unlock_irqrestore(&fep->tx_lock, flags); | |
874 | ||
875 | return 0; | |
876 | } | |
877 | ||
878 | static void fec_timeout(struct net_device *dev) | |
879 | { | |
880 | struct fec_enet_private *fep = netdev_priv(dev); | |
881 | ||
882 | fep->stats.tx_errors++; | |
883 | ||
884 | if (fep->tx_free) | |
885 | netif_wake_queue(dev); | |
886 | ||
887 | /* check link status again */ | |
888 | fec_mii_link_status_change_check(dev, 0); | |
889 | } | |
890 | ||
891 | static int fec_enet_open(struct net_device *dev) | |
892 | { | |
893 | struct fec_enet_private *fep = netdev_priv(dev); | |
894 | const struct fec_platform_info *fpi = fep->fpi; | |
895 | unsigned long flags; | |
896 | ||
897 | /* Install our interrupt handler. */ | |
898 | if (request_irq(fpi->fec_irq, fec_enet_interrupt, 0, "fec", dev) != 0) { | |
899 | printk(KERN_ERR DRV_MODULE_NAME | |
900 | ": %s Could not allocate FEC IRQ!", dev->name); | |
901 | return -EINVAL; | |
902 | } | |
903 | ||
904 | /* Install our phy interrupt handler */ | |
905 | if (fpi->phy_irq != -1 && | |
906 | request_irq(fpi->phy_irq, fec_mii_link_interrupt, 0, "fec-phy", | |
907 | dev) != 0) { | |
908 | printk(KERN_ERR DRV_MODULE_NAME | |
909 | ": %s Could not allocate PHY IRQ!", dev->name); | |
910 | free_irq(fpi->fec_irq, dev); | |
911 | return -EINVAL; | |
912 | } | |
913 | ||
914 | if (fpi->use_mdio) { | |
915 | fec_mii_startup(dev); | |
916 | netif_carrier_off(dev); | |
917 | fec_mii_link_status_change_check(dev, 1); | |
918 | } else { | |
919 | spin_lock_irqsave(&fep->lock, flags); | |
920 | fec_restart(dev, 1, 100); /* XXX this sucks */ | |
921 | spin_unlock_irqrestore(&fep->lock, flags); | |
922 | ||
923 | netif_carrier_on(dev); | |
924 | netif_start_queue(dev); | |
925 | } | |
926 | return 0; | |
927 | } | |
928 | ||
929 | static int fec_enet_close(struct net_device *dev) | |
930 | { | |
931 | struct fec_enet_private *fep = netdev_priv(dev); | |
932 | const struct fec_platform_info *fpi = fep->fpi; | |
933 | unsigned long flags; | |
934 | ||
935 | netif_stop_queue(dev); | |
936 | netif_carrier_off(dev); | |
937 | ||
938 | if (fpi->use_mdio) | |
939 | fec_mii_shutdown(dev); | |
940 | ||
941 | spin_lock_irqsave(&fep->lock, flags); | |
942 | fec_stop(dev); | |
943 | spin_unlock_irqrestore(&fep->lock, flags); | |
944 | ||
945 | /* release any irqs */ | |
946 | if (fpi->phy_irq != -1) | |
947 | free_irq(fpi->phy_irq, dev); | |
948 | free_irq(fpi->fec_irq, dev); | |
949 | ||
950 | return 0; | |
951 | } | |
952 | ||
953 | static struct net_device_stats *fec_enet_get_stats(struct net_device *dev) | |
954 | { | |
955 | struct fec_enet_private *fep = netdev_priv(dev); | |
956 | return &fep->stats; | |
957 | } | |
958 | ||
959 | static int fec_enet_poll(struct net_device *dev, int *budget) | |
960 | { | |
961 | return fec_enet_rx_common(dev, budget); | |
962 | } | |
963 | ||
964 | /*************************************************************************/ | |
965 | ||
966 | static void fec_get_drvinfo(struct net_device *dev, | |
967 | struct ethtool_drvinfo *info) | |
968 | { | |
969 | strcpy(info->driver, DRV_MODULE_NAME); | |
970 | strcpy(info->version, DRV_MODULE_VERSION); | |
971 | } | |
972 | ||
973 | static int fec_get_regs_len(struct net_device *dev) | |
974 | { | |
975 | return sizeof(fec_t); | |
976 | } | |
977 | ||
978 | static void fec_get_regs(struct net_device *dev, struct ethtool_regs *regs, | |
979 | void *p) | |
980 | { | |
981 | struct fec_enet_private *fep = netdev_priv(dev); | |
982 | unsigned long flags; | |
983 | ||
984 | if (regs->len < sizeof(fec_t)) | |
985 | return; | |
986 | ||
987 | regs->version = 0; | |
988 | spin_lock_irqsave(&fep->lock, flags); | |
989 | memcpy_fromio(p, fep->fecp, sizeof(fec_t)); | |
990 | spin_unlock_irqrestore(&fep->lock, flags); | |
991 | } | |
992 | ||
993 | static int fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
994 | { | |
995 | struct fec_enet_private *fep = netdev_priv(dev); | |
996 | unsigned long flags; | |
997 | int rc; | |
998 | ||
999 | spin_lock_irqsave(&fep->lock, flags); | |
1000 | rc = mii_ethtool_gset(&fep->mii_if, cmd); | |
1001 | spin_unlock_irqrestore(&fep->lock, flags); | |
1002 | ||
1003 | return rc; | |
1004 | } | |
1005 | ||
1006 | static int fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
1007 | { | |
1008 | struct fec_enet_private *fep = netdev_priv(dev); | |
1009 | unsigned long flags; | |
1010 | int rc; | |
1011 | ||
1012 | spin_lock_irqsave(&fep->lock, flags); | |
1013 | rc = mii_ethtool_sset(&fep->mii_if, cmd); | |
1014 | spin_unlock_irqrestore(&fep->lock, flags); | |
1015 | ||
1016 | return rc; | |
1017 | } | |
1018 | ||
1019 | static int fec_nway_reset(struct net_device *dev) | |
1020 | { | |
1021 | struct fec_enet_private *fep = netdev_priv(dev); | |
1022 | return mii_nway_restart(&fep->mii_if); | |
1023 | } | |
1024 | ||
1025 | static __u32 fec_get_msglevel(struct net_device *dev) | |
1026 | { | |
1027 | struct fec_enet_private *fep = netdev_priv(dev); | |
1028 | return fep->msg_enable; | |
1029 | } | |
1030 | ||
1031 | static void fec_set_msglevel(struct net_device *dev, __u32 value) | |
1032 | { | |
1033 | struct fec_enet_private *fep = netdev_priv(dev); | |
1034 | fep->msg_enable = value; | |
1035 | } | |
1036 | ||
7282d491 JG |
1037 | static const struct ethtool_ops fec_ethtool_ops = { |
1038 | .get_drvinfo = fec_get_drvinfo, | |
1039 | .get_regs_len = fec_get_regs_len, | |
1040 | .get_settings = fec_get_settings, | |
1041 | .set_settings = fec_set_settings, | |
1042 | .nway_reset = fec_nway_reset, | |
1043 | .get_link = ethtool_op_get_link, | |
1044 | .get_msglevel = fec_get_msglevel, | |
1045 | .set_msglevel = fec_set_msglevel, | |
1046 | .get_tx_csum = ethtool_op_get_tx_csum, | |
1047 | .set_tx_csum = ethtool_op_set_tx_csum, /* local! */ | |
1048 | .get_sg = ethtool_op_get_sg, | |
1049 | .set_sg = ethtool_op_set_sg, | |
1050 | .get_regs = fec_get_regs, | |
1da177e4 LT |
1051 | }; |
1052 | ||
1053 | static int fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1054 | { | |
1055 | struct fec_enet_private *fep = netdev_priv(dev); | |
1056 | struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data; | |
1057 | unsigned long flags; | |
1058 | int rc; | |
1059 | ||
1060 | if (!netif_running(dev)) | |
1061 | return -EINVAL; | |
1062 | ||
1063 | spin_lock_irqsave(&fep->lock, flags); | |
1064 | rc = generic_mii_ioctl(&fep->mii_if, mii, cmd, NULL); | |
1065 | spin_unlock_irqrestore(&fep->lock, flags); | |
1066 | return rc; | |
1067 | } | |
1068 | ||
1069 | int fec_8xx_init_one(const struct fec_platform_info *fpi, | |
1070 | struct net_device **devp) | |
1071 | { | |
1072 | immap_t *immap = (immap_t *) IMAP_ADDR; | |
1073 | static int fec_8xx_version_printed = 0; | |
1074 | struct net_device *dev = NULL; | |
1075 | struct fec_enet_private *fep = NULL; | |
1076 | fec_t *fecp = NULL; | |
1077 | int i; | |
1078 | int err = 0; | |
1079 | int registered = 0; | |
1080 | __u32 siel; | |
1081 | ||
1082 | *devp = NULL; | |
1083 | ||
1084 | switch (fpi->fec_no) { | |
1085 | case 0: | |
1086 | fecp = &((immap_t *) IMAP_ADDR)->im_cpm.cp_fec; | |
1087 | break; | |
1088 | #ifdef CONFIG_DUET | |
1089 | case 1: | |
1090 | fecp = &((immap_t *) IMAP_ADDR)->im_cpm.cp_fec2; | |
1091 | break; | |
1092 | #endif | |
1093 | default: | |
1094 | return -EINVAL; | |
1095 | } | |
1096 | ||
1097 | if (fec_8xx_version_printed++ == 0) | |
1098 | printk(KERN_INFO "%s", version); | |
1099 | ||
1100 | i = sizeof(*fep) + (sizeof(struct sk_buff **) * | |
1101 | (fpi->rx_ring + fpi->tx_ring)); | |
1102 | ||
1103 | dev = alloc_etherdev(i); | |
1104 | if (!dev) { | |
1105 | err = -ENOMEM; | |
1106 | goto err; | |
1107 | } | |
1108 | SET_MODULE_OWNER(dev); | |
1109 | ||
1110 | fep = netdev_priv(dev); | |
1111 | ||
1112 | /* partial reset of FEC */ | |
1113 | fec_whack_reset(fecp); | |
1114 | ||
1115 | /* point rx_skbuff, tx_skbuff */ | |
1116 | fep->rx_skbuff = (struct sk_buff **)&fep[1]; | |
1117 | fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring; | |
1118 | ||
1119 | fep->fecp = fecp; | |
1120 | fep->fpi = fpi; | |
1121 | ||
1122 | /* init locks */ | |
1123 | spin_lock_init(&fep->lock); | |
1124 | spin_lock_init(&fep->tx_lock); | |
1125 | ||
1126 | /* | |
1127 | * Set the Ethernet address. | |
1128 | */ | |
1129 | for (i = 0; i < 6; i++) | |
1130 | dev->dev_addr[i] = fpi->macaddr[i]; | |
1131 | ||
1132 | fep->ring_base = dma_alloc_coherent(NULL, | |
1133 | (fpi->tx_ring + fpi->rx_ring) * | |
1134 | sizeof(cbd_t), &fep->ring_mem_addr, | |
1135 | GFP_KERNEL); | |
1136 | if (fep->ring_base == NULL) { | |
1137 | printk(KERN_ERR DRV_MODULE_NAME | |
1138 | ": %s dma alloc failed.\n", dev->name); | |
1139 | err = -ENOMEM; | |
1140 | goto err; | |
1141 | } | |
1142 | ||
1143 | /* | |
1144 | * Set receive and transmit descriptor base. | |
1145 | */ | |
1146 | fep->rx_bd_base = fep->ring_base; | |
1147 | fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring; | |
1148 | ||
1149 | /* initialize ring size variables */ | |
1150 | fep->tx_ring = fpi->tx_ring; | |
1151 | fep->rx_ring = fpi->rx_ring; | |
1152 | ||
1153 | /* SIU interrupt */ | |
1154 | if (fpi->phy_irq != -1 && | |
1155 | (fpi->phy_irq >= SIU_IRQ0 && fpi->phy_irq < SIU_LEVEL7)) { | |
1156 | ||
1157 | siel = in_be32(&immap->im_siu_conf.sc_siel); | |
1158 | if ((fpi->phy_irq & 1) == 0) | |
1159 | siel |= (0x80000000 >> fpi->phy_irq); | |
1160 | else | |
1161 | siel &= ~(0x80000000 >> (fpi->phy_irq & ~1)); | |
1162 | out_be32(&immap->im_siu_conf.sc_siel, siel); | |
1163 | } | |
1164 | ||
1165 | /* | |
1166 | * The FEC Ethernet specific entries in the device structure. | |
1167 | */ | |
1168 | dev->open = fec_enet_open; | |
1169 | dev->hard_start_xmit = fec_enet_start_xmit; | |
1170 | dev->tx_timeout = fec_timeout; | |
1171 | dev->watchdog_timeo = TX_TIMEOUT; | |
1172 | dev->stop = fec_enet_close; | |
1173 | dev->get_stats = fec_enet_get_stats; | |
1174 | dev->set_multicast_list = fec_set_multicast_list; | |
1175 | dev->set_mac_address = fec_set_mac_address; | |
1176 | if (fpi->use_napi) { | |
1177 | dev->poll = fec_enet_poll; | |
1178 | dev->weight = fpi->napi_weight; | |
1179 | } | |
1180 | dev->ethtool_ops = &fec_ethtool_ops; | |
1181 | dev->do_ioctl = fec_ioctl; | |
1182 | ||
1183 | fep->fec_phy_speed = | |
1184 | ((((fpi->sys_clk + 4999999) / 2500000) / 2) & 0x3F) << 1; | |
1185 | ||
1186 | init_timer(&fep->phy_timer_list); | |
1187 | ||
1188 | /* partial reset of FEC so that only MII works */ | |
1189 | FW(fecp, mii_speed, fep->fec_phy_speed); | |
1190 | FW(fecp, ievent, 0xffc0); | |
1191 | FW(fecp, ivec, (fpi->fec_irq / 2) << 29); | |
1192 | FW(fecp, imask, 0); | |
1193 | FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ | |
1194 | FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); | |
1195 | ||
1196 | netif_carrier_off(dev); | |
1197 | ||
1198 | err = register_netdev(dev); | |
1199 | if (err != 0) | |
1200 | goto err; | |
1201 | registered = 1; | |
1202 | ||
1203 | if (fpi->use_mdio) { | |
1204 | fep->mii_if.dev = dev; | |
1205 | fep->mii_if.mdio_read = fec_mii_read; | |
1206 | fep->mii_if.mdio_write = fec_mii_write; | |
1207 | fep->mii_if.phy_id_mask = 0x1f; | |
1208 | fep->mii_if.reg_num_mask = 0x1f; | |
1209 | fep->mii_if.phy_id = fec_mii_phy_id_detect(dev); | |
1210 | } | |
1211 | ||
1212 | *devp = dev; | |
1213 | ||
1214 | return 0; | |
1215 | ||
1216 | err: | |
1217 | if (dev != NULL) { | |
1218 | if (fecp != NULL) | |
1219 | fec_whack_reset(fecp); | |
1220 | ||
1221 | if (registered) | |
1222 | unregister_netdev(dev); | |
1223 | ||
1224 | if (fep != NULL) { | |
1225 | if (fep->ring_base) | |
1226 | dma_free_coherent(NULL, | |
1227 | (fpi->tx_ring + | |
1228 | fpi->rx_ring) * | |
1229 | sizeof(cbd_t), fep->ring_base, | |
1230 | fep->ring_mem_addr); | |
1231 | } | |
1232 | free_netdev(dev); | |
1233 | } | |
1234 | return err; | |
1235 | } | |
1236 | ||
1237 | int fec_8xx_cleanup_one(struct net_device *dev) | |
1238 | { | |
1239 | struct fec_enet_private *fep = netdev_priv(dev); | |
1240 | fec_t *fecp = fep->fecp; | |
1241 | const struct fec_platform_info *fpi = fep->fpi; | |
1242 | ||
1243 | fec_whack_reset(fecp); | |
1244 | ||
1245 | unregister_netdev(dev); | |
1246 | ||
1247 | dma_free_coherent(NULL, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t), | |
1248 | fep->ring_base, fep->ring_mem_addr); | |
1249 | ||
1250 | free_netdev(dev); | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | /**************************************************************************************/ | |
1256 | /**************************************************************************************/ | |
1257 | /**************************************************************************************/ | |
1258 | ||
1259 | static int __init fec_8xx_init(void) | |
1260 | { | |
1261 | return fec_8xx_platform_init(); | |
1262 | } | |
1263 | ||
1264 | static void __exit fec_8xx_cleanup(void) | |
1265 | { | |
1266 | fec_8xx_platform_cleanup(); | |
1267 | } | |
1268 | ||
1269 | /**************************************************************************************/ | |
1270 | /**************************************************************************************/ | |
1271 | /**************************************************************************************/ | |
1272 | ||
1273 | module_init(fec_8xx_init); | |
1274 | module_exit(fec_8xx_cleanup); |