Commit | Line | Data |
---|---|---|
48257c4f PA |
1 | /* |
2 | * Combined Ethernet driver for Motorola MPC8xx and MPC82xx. | |
3 | * | |
9b8ee8e7 | 4 | * Copyright (c) 2003 Intracom S.A. |
48257c4f | 5 | * by Pantelis Antoniou <panto@intracom.gr> |
9b8ee8e7 VB |
6 | * |
7 | * 2005 (c) MontaVista Software, Inc. | |
48257c4f PA |
8 | * Vitaly Bordug <vbordug@ru.mvista.com> |
9 | * | |
10 | * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com> | |
11 | * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se> | |
12 | * | |
9b8ee8e7 VB |
13 | * This file is licensed under the terms of the GNU General Public License |
14 | * version 2. This program is licensed "as is" without any warranty of any | |
48257c4f PA |
15 | * kind, whether express or implied. |
16 | */ | |
17 | ||
48257c4f PA |
18 | #include <linux/module.h> |
19 | #include <linux/kernel.h> | |
20 | #include <linux/types.h> | |
48257c4f PA |
21 | #include <linux/string.h> |
22 | #include <linux/ptrace.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/ioport.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/interrupt.h> | |
48257c4f PA |
27 | #include <linux/init.h> |
28 | #include <linux/delay.h> | |
29 | #include <linux/netdevice.h> | |
30 | #include <linux/etherdevice.h> | |
31 | #include <linux/skbuff.h> | |
32 | #include <linux/spinlock.h> | |
33 | #include <linux/mii.h> | |
34 | #include <linux/ethtool.h> | |
35 | #include <linux/bitops.h> | |
36 | #include <linux/fs.h> | |
f7b99969 | 37 | #include <linux/platform_device.h> |
5b4b8454 | 38 | #include <linux/phy.h> |
b219108c | 39 | #include <linux/of_platform.h> |
8725f25a | 40 | #include <linux/of_gpio.h> |
48257c4f PA |
41 | |
42 | #include <linux/vmalloc.h> | |
48257c4f PA |
43 | #include <asm/pgtable.h> |
44 | #include <asm/irq.h> | |
45 | #include <asm/uaccess.h> | |
46 | ||
47 | #include "fs_enet.h" | |
48 | ||
49 | /*************************************************/ | |
50 | ||
48257c4f PA |
51 | MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>"); |
52 | MODULE_DESCRIPTION("Freescale Ethernet Driver"); | |
53 | MODULE_LICENSE("GPL"); | |
54 | MODULE_VERSION(DRV_MODULE_VERSION); | |
55 | ||
31a5bb04 | 56 | static int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */ |
8d3b33f6 | 57 | module_param(fs_enet_debug, int, 0); |
48257c4f PA |
58 | MODULE_PARM_DESC(fs_enet_debug, |
59 | "Freescale bitmapped debugging message enable value"); | |
60 | ||
9b8ee8e7 VB |
61 | #ifdef CONFIG_NET_POLL_CONTROLLER |
62 | static void fs_enet_netpoll(struct net_device *dev); | |
63 | #endif | |
48257c4f PA |
64 | |
65 | static void fs_set_multicast_list(struct net_device *dev) | |
66 | { | |
67 | struct fs_enet_private *fep = netdev_priv(dev); | |
68 | ||
69 | (*fep->ops->set_multicast_list)(dev); | |
70 | } | |
71 | ||
0d0d9c15 SW |
72 | static void skb_align(struct sk_buff *skb, int align) |
73 | { | |
74 | int off = ((unsigned long)skb->data) & (align - 1); | |
75 | ||
76 | if (off) | |
77 | skb_reserve(skb, align - off); | |
78 | } | |
79 | ||
48257c4f | 80 | /* NAPI receive function */ |
bea3348e | 81 | static int fs_enet_rx_napi(struct napi_struct *napi, int budget) |
48257c4f | 82 | { |
bea3348e | 83 | struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi); |
f860f49e | 84 | struct net_device *dev = fep->ndev; |
48257c4f | 85 | const struct fs_platform_info *fpi = fep->fpi; |
31a5bb04 | 86 | cbd_t __iomem *bdp; |
48257c4f PA |
87 | struct sk_buff *skb, *skbn, *skbt; |
88 | int received = 0; | |
89 | u16 pkt_len, sc; | |
90 | int curidx; | |
48257c4f | 91 | |
48257c4f PA |
92 | /* |
93 | * First, grab all of the stats for the incoming packet. | |
94 | * These get messed up if we get called due to a busy condition. | |
95 | */ | |
96 | bdp = fep->cur_rx; | |
97 | ||
98 | /* clear RX status bits for napi*/ | |
99 | (*fep->ops->napi_clear_rx_event)(dev); | |
100 | ||
101 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { | |
48257c4f PA |
102 | curidx = bdp - fep->rx_bd_base; |
103 | ||
104 | /* | |
105 | * Since we have allocated space to hold a complete frame, | |
106 | * the last indicator should be set. | |
107 | */ | |
108 | if ((sc & BD_ENET_RX_LAST) == 0) | |
109 | printk(KERN_WARNING DRV_MODULE_NAME | |
110 | ": %s rcv is not +last\n", | |
111 | dev->name); | |
112 | ||
113 | /* | |
9b8ee8e7 | 114 | * Check for errors. |
48257c4f PA |
115 | */ |
116 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | | |
117 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { | |
118 | fep->stats.rx_errors++; | |
119 | /* Frame too long or too short. */ | |
120 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) | |
121 | fep->stats.rx_length_errors++; | |
122 | /* Frame alignment */ | |
123 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) | |
124 | fep->stats.rx_frame_errors++; | |
125 | /* CRC Error */ | |
126 | if (sc & BD_ENET_RX_CR) | |
127 | fep->stats.rx_crc_errors++; | |
128 | /* FIFO overrun */ | |
129 | if (sc & BD_ENET_RX_OV) | |
130 | fep->stats.rx_crc_errors++; | |
131 | ||
132 | skb = fep->rx_skbuff[curidx]; | |
133 | ||
34e30d61 | 134 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
135 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
136 | DMA_FROM_DEVICE); | |
137 | ||
138 | skbn = skb; | |
139 | ||
140 | } else { | |
48257c4f PA |
141 | skb = fep->rx_skbuff[curidx]; |
142 | ||
34e30d61 | 143 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
144 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
145 | DMA_FROM_DEVICE); | |
146 | ||
147 | /* | |
148 | * Process the incoming frame. | |
149 | */ | |
150 | fep->stats.rx_packets++; | |
151 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ | |
152 | fep->stats.rx_bytes += pkt_len + 4; | |
153 | ||
154 | if (pkt_len <= fpi->rx_copybreak) { | |
155 | /* +2 to make IP header L1 cache aligned */ | |
156 | skbn = dev_alloc_skb(pkt_len + 2); | |
157 | if (skbn != NULL) { | |
158 | skb_reserve(skbn, 2); /* align IP header */ | |
d626f62b ACM |
159 | skb_copy_from_linear_data(skb, |
160 | skbn->data, pkt_len); | |
48257c4f PA |
161 | /* swap */ |
162 | skbt = skb; | |
163 | skb = skbn; | |
164 | skbn = skbt; | |
165 | } | |
0d0d9c15 | 166 | } else { |
48257c4f PA |
167 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); |
168 | ||
0d0d9c15 SW |
169 | if (skbn) |
170 | skb_align(skbn, ENET_RX_ALIGN); | |
171 | } | |
172 | ||
48257c4f | 173 | if (skbn != NULL) { |
48257c4f PA |
174 | skb_put(skb, pkt_len); /* Make room */ |
175 | skb->protocol = eth_type_trans(skb, dev); | |
176 | received++; | |
177 | netif_receive_skb(skb); | |
178 | } else { | |
179 | printk(KERN_WARNING DRV_MODULE_NAME | |
180 | ": %s Memory squeeze, dropping packet.\n", | |
181 | dev->name); | |
182 | fep->stats.rx_dropped++; | |
183 | skbn = skb; | |
184 | } | |
185 | } | |
186 | ||
187 | fep->rx_skbuff[curidx] = skbn; | |
188 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data, | |
189 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
190 | DMA_FROM_DEVICE)); | |
191 | CBDW_DATLEN(bdp, 0); | |
192 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); | |
193 | ||
194 | /* | |
9b8ee8e7 | 195 | * Update BD pointer to next entry. |
48257c4f PA |
196 | */ |
197 | if ((sc & BD_ENET_RX_WRAP) == 0) | |
198 | bdp++; | |
199 | else | |
200 | bdp = fep->rx_bd_base; | |
201 | ||
202 | (*fep->ops->rx_bd_done)(dev); | |
bea3348e SH |
203 | |
204 | if (received >= budget) | |
205 | break; | |
48257c4f PA |
206 | } |
207 | ||
208 | fep->cur_rx = bdp; | |
209 | ||
f860f49e | 210 | if (received < budget) { |
bea3348e | 211 | /* done */ |
908a7a16 | 212 | netif_rx_complete(napi); |
bea3348e SH |
213 | (*fep->ops->napi_enable_rx)(dev); |
214 | } | |
215 | return received; | |
48257c4f PA |
216 | } |
217 | ||
218 | /* non NAPI receive function */ | |
219 | static int fs_enet_rx_non_napi(struct net_device *dev) | |
220 | { | |
221 | struct fs_enet_private *fep = netdev_priv(dev); | |
222 | const struct fs_platform_info *fpi = fep->fpi; | |
31a5bb04 | 223 | cbd_t __iomem *bdp; |
48257c4f PA |
224 | struct sk_buff *skb, *skbn, *skbt; |
225 | int received = 0; | |
226 | u16 pkt_len, sc; | |
227 | int curidx; | |
228 | /* | |
229 | * First, grab all of the stats for the incoming packet. | |
230 | * These get messed up if we get called due to a busy condition. | |
231 | */ | |
232 | bdp = fep->cur_rx; | |
233 | ||
234 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { | |
235 | ||
236 | curidx = bdp - fep->rx_bd_base; | |
237 | ||
238 | /* | |
239 | * Since we have allocated space to hold a complete frame, | |
240 | * the last indicator should be set. | |
241 | */ | |
242 | if ((sc & BD_ENET_RX_LAST) == 0) | |
243 | printk(KERN_WARNING DRV_MODULE_NAME | |
244 | ": %s rcv is not +last\n", | |
245 | dev->name); | |
246 | ||
247 | /* | |
9b8ee8e7 | 248 | * Check for errors. |
48257c4f PA |
249 | */ |
250 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | | |
251 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { | |
252 | fep->stats.rx_errors++; | |
253 | /* Frame too long or too short. */ | |
254 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) | |
255 | fep->stats.rx_length_errors++; | |
256 | /* Frame alignment */ | |
257 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) | |
258 | fep->stats.rx_frame_errors++; | |
259 | /* CRC Error */ | |
260 | if (sc & BD_ENET_RX_CR) | |
261 | fep->stats.rx_crc_errors++; | |
262 | /* FIFO overrun */ | |
263 | if (sc & BD_ENET_RX_OV) | |
264 | fep->stats.rx_crc_errors++; | |
265 | ||
266 | skb = fep->rx_skbuff[curidx]; | |
267 | ||
34e30d61 | 268 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
269 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
270 | DMA_FROM_DEVICE); | |
271 | ||
272 | skbn = skb; | |
273 | ||
274 | } else { | |
275 | ||
276 | skb = fep->rx_skbuff[curidx]; | |
277 | ||
34e30d61 | 278 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
279 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
280 | DMA_FROM_DEVICE); | |
281 | ||
282 | /* | |
283 | * Process the incoming frame. | |
284 | */ | |
285 | fep->stats.rx_packets++; | |
286 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ | |
287 | fep->stats.rx_bytes += pkt_len + 4; | |
288 | ||
289 | if (pkt_len <= fpi->rx_copybreak) { | |
290 | /* +2 to make IP header L1 cache aligned */ | |
291 | skbn = dev_alloc_skb(pkt_len + 2); | |
292 | if (skbn != NULL) { | |
293 | skb_reserve(skbn, 2); /* align IP header */ | |
d626f62b ACM |
294 | skb_copy_from_linear_data(skb, |
295 | skbn->data, pkt_len); | |
48257c4f PA |
296 | /* swap */ |
297 | skbt = skb; | |
298 | skb = skbn; | |
299 | skbn = skbt; | |
300 | } | |
0d0d9c15 | 301 | } else { |
48257c4f PA |
302 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); |
303 | ||
0d0d9c15 SW |
304 | if (skbn) |
305 | skb_align(skbn, ENET_RX_ALIGN); | |
306 | } | |
307 | ||
48257c4f | 308 | if (skbn != NULL) { |
48257c4f PA |
309 | skb_put(skb, pkt_len); /* Make room */ |
310 | skb->protocol = eth_type_trans(skb, dev); | |
311 | received++; | |
312 | netif_rx(skb); | |
313 | } else { | |
314 | printk(KERN_WARNING DRV_MODULE_NAME | |
315 | ": %s Memory squeeze, dropping packet.\n", | |
316 | dev->name); | |
317 | fep->stats.rx_dropped++; | |
318 | skbn = skb; | |
319 | } | |
320 | } | |
321 | ||
322 | fep->rx_skbuff[curidx] = skbn; | |
323 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data, | |
324 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
325 | DMA_FROM_DEVICE)); | |
326 | CBDW_DATLEN(bdp, 0); | |
327 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); | |
328 | ||
329 | /* | |
9b8ee8e7 | 330 | * Update BD pointer to next entry. |
48257c4f PA |
331 | */ |
332 | if ((sc & BD_ENET_RX_WRAP) == 0) | |
333 | bdp++; | |
334 | else | |
335 | bdp = fep->rx_bd_base; | |
336 | ||
337 | (*fep->ops->rx_bd_done)(dev); | |
338 | } | |
339 | ||
340 | fep->cur_rx = bdp; | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | static void fs_enet_tx(struct net_device *dev) | |
346 | { | |
347 | struct fs_enet_private *fep = netdev_priv(dev); | |
31a5bb04 | 348 | cbd_t __iomem *bdp; |
48257c4f PA |
349 | struct sk_buff *skb; |
350 | int dirtyidx, do_wake, do_restart; | |
351 | u16 sc; | |
352 | ||
aa90f503 | 353 | spin_lock(&fep->tx_lock); |
48257c4f PA |
354 | bdp = fep->dirty_tx; |
355 | ||
356 | do_wake = do_restart = 0; | |
357 | while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) { | |
48257c4f PA |
358 | dirtyidx = bdp - fep->tx_bd_base; |
359 | ||
360 | if (fep->tx_free == fep->tx_ring) | |
361 | break; | |
362 | ||
363 | skb = fep->tx_skbuff[dirtyidx]; | |
364 | ||
365 | /* | |
9b8ee8e7 | 366 | * Check for errors. |
48257c4f PA |
367 | */ |
368 | if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | | |
369 | BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) { | |
370 | ||
371 | if (sc & BD_ENET_TX_HB) /* No heartbeat */ | |
372 | fep->stats.tx_heartbeat_errors++; | |
373 | if (sc & BD_ENET_TX_LC) /* Late collision */ | |
374 | fep->stats.tx_window_errors++; | |
375 | if (sc & BD_ENET_TX_RL) /* Retrans limit */ | |
376 | fep->stats.tx_aborted_errors++; | |
377 | if (sc & BD_ENET_TX_UN) /* Underrun */ | |
378 | fep->stats.tx_fifo_errors++; | |
379 | if (sc & BD_ENET_TX_CSL) /* Carrier lost */ | |
380 | fep->stats.tx_carrier_errors++; | |
381 | ||
382 | if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) { | |
383 | fep->stats.tx_errors++; | |
384 | do_restart = 1; | |
385 | } | |
386 | } else | |
387 | fep->stats.tx_packets++; | |
388 | ||
389 | if (sc & BD_ENET_TX_READY) | |
390 | printk(KERN_WARNING DRV_MODULE_NAME | |
391 | ": %s HEY! Enet xmit interrupt and TX_READY.\n", | |
392 | dev->name); | |
393 | ||
394 | /* | |
395 | * Deferred means some collisions occurred during transmit, | |
396 | * but we eventually sent the packet OK. | |
397 | */ | |
398 | if (sc & BD_ENET_TX_DEF) | |
399 | fep->stats.collisions++; | |
400 | ||
401 | /* unmap */ | |
34e30d61 PA |
402 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
403 | skb->len, DMA_TO_DEVICE); | |
48257c4f PA |
404 | |
405 | /* | |
9b8ee8e7 | 406 | * Free the sk buffer associated with this last transmit. |
48257c4f PA |
407 | */ |
408 | dev_kfree_skb_irq(skb); | |
409 | fep->tx_skbuff[dirtyidx] = NULL; | |
410 | ||
411 | /* | |
9b8ee8e7 | 412 | * Update pointer to next buffer descriptor to be transmitted. |
48257c4f PA |
413 | */ |
414 | if ((sc & BD_ENET_TX_WRAP) == 0) | |
415 | bdp++; | |
416 | else | |
417 | bdp = fep->tx_bd_base; | |
418 | ||
419 | /* | |
420 | * Since we have freed up a buffer, the ring is no longer | |
421 | * full. | |
422 | */ | |
423 | if (!fep->tx_free++) | |
424 | do_wake = 1; | |
425 | } | |
426 | ||
427 | fep->dirty_tx = bdp; | |
428 | ||
429 | if (do_restart) | |
430 | (*fep->ops->tx_restart)(dev); | |
431 | ||
aa90f503 | 432 | spin_unlock(&fep->tx_lock); |
48257c4f PA |
433 | |
434 | if (do_wake) | |
435 | netif_wake_queue(dev); | |
436 | } | |
437 | ||
438 | /* | |
439 | * The interrupt handler. | |
440 | * This is called from the MPC core interrupt. | |
441 | */ | |
442 | static irqreturn_t | |
7d12e780 | 443 | fs_enet_interrupt(int irq, void *dev_id) |
48257c4f PA |
444 | { |
445 | struct net_device *dev = dev_id; | |
446 | struct fs_enet_private *fep; | |
447 | const struct fs_platform_info *fpi; | |
448 | u32 int_events; | |
449 | u32 int_clr_events; | |
450 | int nr, napi_ok; | |
451 | int handled; | |
452 | ||
453 | fep = netdev_priv(dev); | |
454 | fpi = fep->fpi; | |
455 | ||
456 | nr = 0; | |
457 | while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) { | |
48257c4f PA |
458 | nr++; |
459 | ||
460 | int_clr_events = int_events; | |
461 | if (fpi->use_napi) | |
462 | int_clr_events &= ~fep->ev_napi_rx; | |
463 | ||
464 | (*fep->ops->clear_int_events)(dev, int_clr_events); | |
465 | ||
466 | if (int_events & fep->ev_err) | |
467 | (*fep->ops->ev_error)(dev, int_events); | |
468 | ||
469 | if (int_events & fep->ev_rx) { | |
470 | if (!fpi->use_napi) | |
471 | fs_enet_rx_non_napi(dev); | |
472 | else { | |
bea3348e | 473 | napi_ok = napi_schedule_prep(&fep->napi); |
48257c4f PA |
474 | |
475 | (*fep->ops->napi_disable_rx)(dev); | |
476 | (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx); | |
477 | ||
478 | /* NOTE: it is possible for FCCs in NAPI mode */ | |
479 | /* to submit a spurious interrupt while in poll */ | |
480 | if (napi_ok) | |
908a7a16 | 481 | __netif_rx_schedule(&fep->napi); |
48257c4f PA |
482 | } |
483 | } | |
484 | ||
485 | if (int_events & fep->ev_tx) | |
486 | fs_enet_tx(dev); | |
487 | } | |
488 | ||
489 | handled = nr > 0; | |
490 | return IRQ_RETVAL(handled); | |
491 | } | |
492 | ||
493 | void fs_init_bds(struct net_device *dev) | |
494 | { | |
495 | struct fs_enet_private *fep = netdev_priv(dev); | |
31a5bb04 | 496 | cbd_t __iomem *bdp; |
48257c4f PA |
497 | struct sk_buff *skb; |
498 | int i; | |
499 | ||
500 | fs_cleanup_bds(dev); | |
501 | ||
502 | fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; | |
503 | fep->tx_free = fep->tx_ring; | |
504 | fep->cur_rx = fep->rx_bd_base; | |
505 | ||
506 | /* | |
9b8ee8e7 | 507 | * Initialize the receive buffer descriptors. |
48257c4f PA |
508 | */ |
509 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { | |
510 | skb = dev_alloc_skb(ENET_RX_FRSIZE); | |
511 | if (skb == NULL) { | |
512 | printk(KERN_WARNING DRV_MODULE_NAME | |
513 | ": %s Memory squeeze, unable to allocate skb\n", | |
514 | dev->name); | |
515 | break; | |
516 | } | |
0d0d9c15 | 517 | skb_align(skb, ENET_RX_ALIGN); |
48257c4f | 518 | fep->rx_skbuff[i] = skb; |
48257c4f PA |
519 | CBDW_BUFADDR(bdp, |
520 | dma_map_single(fep->dev, skb->data, | |
521 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
522 | DMA_FROM_DEVICE)); | |
523 | CBDW_DATLEN(bdp, 0); /* zero */ | |
524 | CBDW_SC(bdp, BD_ENET_RX_EMPTY | | |
525 | ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP)); | |
526 | } | |
527 | /* | |
9b8ee8e7 | 528 | * if we failed, fillup remainder |
48257c4f PA |
529 | */ |
530 | for (; i < fep->rx_ring; i++, bdp++) { | |
531 | fep->rx_skbuff[i] = NULL; | |
532 | CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP); | |
533 | } | |
534 | ||
535 | /* | |
9b8ee8e7 | 536 | * ...and the same for transmit. |
48257c4f PA |
537 | */ |
538 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { | |
539 | fep->tx_skbuff[i] = NULL; | |
540 | CBDW_BUFADDR(bdp, 0); | |
541 | CBDW_DATLEN(bdp, 0); | |
542 | CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP); | |
543 | } | |
544 | } | |
545 | ||
546 | void fs_cleanup_bds(struct net_device *dev) | |
547 | { | |
548 | struct fs_enet_private *fep = netdev_priv(dev); | |
549 | struct sk_buff *skb; | |
31a5bb04 | 550 | cbd_t __iomem *bdp; |
48257c4f PA |
551 | int i; |
552 | ||
553 | /* | |
9b8ee8e7 | 554 | * Reset SKB transmit buffers. |
48257c4f | 555 | */ |
34e30d61 | 556 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { |
48257c4f PA |
557 | if ((skb = fep->tx_skbuff[i]) == NULL) |
558 | continue; | |
559 | ||
560 | /* unmap */ | |
34e30d61 PA |
561 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
562 | skb->len, DMA_TO_DEVICE); | |
48257c4f PA |
563 | |
564 | fep->tx_skbuff[i] = NULL; | |
565 | dev_kfree_skb(skb); | |
566 | } | |
567 | ||
568 | /* | |
9b8ee8e7 | 569 | * Reset SKB receive buffers |
48257c4f | 570 | */ |
34e30d61 | 571 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { |
48257c4f PA |
572 | if ((skb = fep->rx_skbuff[i]) == NULL) |
573 | continue; | |
574 | ||
575 | /* unmap */ | |
34e30d61 | 576 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
577 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
578 | DMA_FROM_DEVICE); | |
579 | ||
580 | fep->rx_skbuff[i] = NULL; | |
581 | ||
582 | dev_kfree_skb(skb); | |
583 | } | |
584 | } | |
585 | ||
586 | /**********************************************************************************/ | |
587 | ||
588 | static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
589 | { | |
590 | struct fs_enet_private *fep = netdev_priv(dev); | |
31a5bb04 | 591 | cbd_t __iomem *bdp; |
48257c4f PA |
592 | int curidx; |
593 | u16 sc; | |
594 | unsigned long flags; | |
595 | ||
596 | spin_lock_irqsave(&fep->tx_lock, flags); | |
597 | ||
598 | /* | |
9b8ee8e7 | 599 | * Fill in a Tx ring entry |
48257c4f PA |
600 | */ |
601 | bdp = fep->cur_tx; | |
602 | ||
603 | if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) { | |
604 | netif_stop_queue(dev); | |
605 | spin_unlock_irqrestore(&fep->tx_lock, flags); | |
606 | ||
607 | /* | |
608 | * Ooops. All transmit buffers are full. Bail out. | |
609 | * This should not happen, since the tx queue should be stopped. | |
610 | */ | |
611 | printk(KERN_WARNING DRV_MODULE_NAME | |
612 | ": %s tx queue full!.\n", dev->name); | |
613 | return NETDEV_TX_BUSY; | |
614 | } | |
615 | ||
616 | curidx = bdp - fep->tx_bd_base; | |
617 | /* | |
9b8ee8e7 | 618 | * Clear all of the status flags. |
48257c4f PA |
619 | */ |
620 | CBDC_SC(bdp, BD_ENET_TX_STATS); | |
621 | ||
622 | /* | |
9b8ee8e7 | 623 | * Save skb pointer. |
48257c4f PA |
624 | */ |
625 | fep->tx_skbuff[curidx] = skb; | |
626 | ||
627 | fep->stats.tx_bytes += skb->len; | |
628 | ||
629 | /* | |
9b8ee8e7 | 630 | * Push the data cache so the CPM does not get stale memory data. |
48257c4f PA |
631 | */ |
632 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, | |
633 | skb->data, skb->len, DMA_TO_DEVICE)); | |
634 | CBDW_DATLEN(bdp, skb->len); | |
635 | ||
636 | dev->trans_start = jiffies; | |
637 | ||
638 | /* | |
9b8ee8e7 | 639 | * If this was the last BD in the ring, start at the beginning again. |
48257c4f PA |
640 | */ |
641 | if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) | |
642 | fep->cur_tx++; | |
643 | else | |
644 | fep->cur_tx = fep->tx_bd_base; | |
645 | ||
646 | if (!--fep->tx_free) | |
647 | netif_stop_queue(dev); | |
648 | ||
649 | /* Trigger transmission start */ | |
650 | sc = BD_ENET_TX_READY | BD_ENET_TX_INTR | | |
651 | BD_ENET_TX_LAST | BD_ENET_TX_TC; | |
652 | ||
653 | /* note that while FEC does not have this bit | |
654 | * it marks it as available for software use | |
655 | * yay for hw reuse :) */ | |
656 | if (skb->len <= 60) | |
657 | sc |= BD_ENET_TX_PAD; | |
658 | CBDS_SC(bdp, sc); | |
659 | ||
660 | (*fep->ops->tx_kickstart)(dev); | |
661 | ||
662 | spin_unlock_irqrestore(&fep->tx_lock, flags); | |
663 | ||
664 | return NETDEV_TX_OK; | |
665 | } | |
666 | ||
48257c4f PA |
667 | static void fs_timeout(struct net_device *dev) |
668 | { | |
669 | struct fs_enet_private *fep = netdev_priv(dev); | |
670 | unsigned long flags; | |
671 | int wake = 0; | |
672 | ||
673 | fep->stats.tx_errors++; | |
674 | ||
675 | spin_lock_irqsave(&fep->lock, flags); | |
676 | ||
677 | if (dev->flags & IFF_UP) { | |
5b4b8454 | 678 | phy_stop(fep->phydev); |
48257c4f PA |
679 | (*fep->ops->stop)(dev); |
680 | (*fep->ops->restart)(dev); | |
5b4b8454 | 681 | phy_start(fep->phydev); |
48257c4f PA |
682 | } |
683 | ||
5b4b8454 | 684 | phy_start(fep->phydev); |
48257c4f PA |
685 | wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY); |
686 | spin_unlock_irqrestore(&fep->lock, flags); | |
687 | ||
688 | if (wake) | |
689 | netif_wake_queue(dev); | |
690 | } | |
691 | ||
5b4b8454 VB |
692 | /*----------------------------------------------------------------------------- |
693 | * generic link-change handler - should be sufficient for most cases | |
694 | *-----------------------------------------------------------------------------*/ | |
695 | static void generic_adjust_link(struct net_device *dev) | |
696 | { | |
0fb300fa SW |
697 | struct fs_enet_private *fep = netdev_priv(dev); |
698 | struct phy_device *phydev = fep->phydev; | |
699 | int new_state = 0; | |
700 | ||
701 | if (phydev->link) { | |
702 | /* adjust to duplex mode */ | |
703 | if (phydev->duplex != fep->oldduplex) { | |
704 | new_state = 1; | |
705 | fep->oldduplex = phydev->duplex; | |
706 | } | |
707 | ||
708 | if (phydev->speed != fep->oldspeed) { | |
709 | new_state = 1; | |
710 | fep->oldspeed = phydev->speed; | |
711 | } | |
712 | ||
713 | if (!fep->oldlink) { | |
714 | new_state = 1; | |
715 | fep->oldlink = 1; | |
0fb300fa SW |
716 | } |
717 | ||
718 | if (new_state) | |
719 | fep->ops->restart(dev); | |
720 | } else if (fep->oldlink) { | |
721 | new_state = 1; | |
722 | fep->oldlink = 0; | |
723 | fep->oldspeed = 0; | |
724 | fep->oldduplex = -1; | |
0fb300fa SW |
725 | } |
726 | ||
727 | if (new_state && netif_msg_link(fep)) | |
728 | phy_print_status(phydev); | |
5b4b8454 VB |
729 | } |
730 | ||
731 | ||
732 | static void fs_adjust_link(struct net_device *dev) | |
733 | { | |
734 | struct fs_enet_private *fep = netdev_priv(dev); | |
735 | unsigned long flags; | |
736 | ||
737 | spin_lock_irqsave(&fep->lock, flags); | |
738 | ||
739 | if(fep->ops->adjust_link) | |
740 | fep->ops->adjust_link(dev); | |
741 | else | |
742 | generic_adjust_link(dev); | |
743 | ||
744 | spin_unlock_irqrestore(&fep->lock, flags); | |
745 | } | |
746 | ||
747 | static int fs_init_phy(struct net_device *dev) | |
748 | { | |
749 | struct fs_enet_private *fep = netdev_priv(dev); | |
750 | struct phy_device *phydev; | |
751 | ||
752 | fep->oldlink = 0; | |
753 | fep->oldspeed = 0; | |
754 | fep->oldduplex = -1; | |
755 | if(fep->fpi->bus_id) | |
e8a2b6a4 AF |
756 | phydev = phy_connect(dev, fep->fpi->bus_id, &fs_adjust_link, 0, |
757 | PHY_INTERFACE_MODE_MII); | |
5b4b8454 VB |
758 | else { |
759 | printk("No phy bus ID specified in BSP code\n"); | |
760 | return -EINVAL; | |
761 | } | |
762 | if (IS_ERR(phydev)) { | |
763 | printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); | |
764 | return PTR_ERR(phydev); | |
765 | } | |
766 | ||
767 | fep->phydev = phydev; | |
768 | ||
769 | return 0; | |
770 | } | |
771 | ||
48257c4f PA |
772 | static int fs_enet_open(struct net_device *dev) |
773 | { | |
774 | struct fs_enet_private *fep = netdev_priv(dev); | |
48257c4f | 775 | int r; |
5b4b8454 | 776 | int err; |
48257c4f | 777 | |
f4f62301 HS |
778 | /* to initialize the fep->cur_rx,... */ |
779 | /* not doing this, will cause a crash in fs_enet_rx_napi */ | |
780 | fs_init_bds(fep->ndev); | |
781 | ||
f860f49e SW |
782 | if (fep->fpi->use_napi) |
783 | napi_enable(&fep->napi); | |
bea3348e | 784 | |
48257c4f | 785 | /* Install our interrupt handler. */ |
31578140 KG |
786 | r = request_irq(fep->interrupt, fs_enet_interrupt, IRQF_SHARED, |
787 | "fs_enet-mac", dev); | |
48257c4f PA |
788 | if (r != 0) { |
789 | printk(KERN_ERR DRV_MODULE_NAME | |
5b4b8454 | 790 | ": %s Could not allocate FS_ENET IRQ!", dev->name); |
f860f49e SW |
791 | if (fep->fpi->use_napi) |
792 | napi_disable(&fep->napi); | |
48257c4f PA |
793 | return -EINVAL; |
794 | } | |
795 | ||
5b4b8454 | 796 | err = fs_init_phy(dev); |
f860f49e SW |
797 | if (err) { |
798 | if (fep->fpi->use_napi) | |
799 | napi_disable(&fep->napi); | |
5b4b8454 | 800 | return err; |
bea3348e | 801 | } |
5b4b8454 | 802 | phy_start(fep->phydev); |
48257c4f | 803 | |
c8f15686 AV |
804 | netif_start_queue(dev); |
805 | ||
48257c4f PA |
806 | return 0; |
807 | } | |
808 | ||
809 | static int fs_enet_close(struct net_device *dev) | |
810 | { | |
811 | struct fs_enet_private *fep = netdev_priv(dev); | |
48257c4f PA |
812 | unsigned long flags; |
813 | ||
814 | netif_stop_queue(dev); | |
815 | netif_carrier_off(dev); | |
9a3c243d LP |
816 | if (fep->fpi->use_napi) |
817 | napi_disable(&fep->napi); | |
5b4b8454 | 818 | phy_stop(fep->phydev); |
48257c4f PA |
819 | |
820 | spin_lock_irqsave(&fep->lock, flags); | |
aa90f503 | 821 | spin_lock(&fep->tx_lock); |
48257c4f | 822 | (*fep->ops->stop)(dev); |
aa90f503 | 823 | spin_unlock(&fep->tx_lock); |
48257c4f PA |
824 | spin_unlock_irqrestore(&fep->lock, flags); |
825 | ||
826 | /* release any irqs */ | |
5b4b8454 VB |
827 | phy_disconnect(fep->phydev); |
828 | fep->phydev = NULL; | |
31578140 | 829 | free_irq(fep->interrupt, dev); |
48257c4f PA |
830 | |
831 | return 0; | |
832 | } | |
833 | ||
834 | static struct net_device_stats *fs_enet_get_stats(struct net_device *dev) | |
835 | { | |
836 | struct fs_enet_private *fep = netdev_priv(dev); | |
837 | return &fep->stats; | |
838 | } | |
839 | ||
840 | /*************************************************************************/ | |
841 | ||
842 | static void fs_get_drvinfo(struct net_device *dev, | |
843 | struct ethtool_drvinfo *info) | |
844 | { | |
845 | strcpy(info->driver, DRV_MODULE_NAME); | |
846 | strcpy(info->version, DRV_MODULE_VERSION); | |
847 | } | |
848 | ||
849 | static int fs_get_regs_len(struct net_device *dev) | |
850 | { | |
851 | struct fs_enet_private *fep = netdev_priv(dev); | |
852 | ||
853 | return (*fep->ops->get_regs_len)(dev); | |
854 | } | |
855 | ||
856 | static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs, | |
857 | void *p) | |
858 | { | |
859 | struct fs_enet_private *fep = netdev_priv(dev); | |
860 | unsigned long flags; | |
861 | int r, len; | |
862 | ||
863 | len = regs->len; | |
864 | ||
865 | spin_lock_irqsave(&fep->lock, flags); | |
866 | r = (*fep->ops->get_regs)(dev, p, &len); | |
867 | spin_unlock_irqrestore(&fep->lock, flags); | |
868 | ||
869 | if (r == 0) | |
870 | regs->version = 0; | |
871 | } | |
872 | ||
873 | static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
874 | { | |
875 | struct fs_enet_private *fep = netdev_priv(dev); | |
dfd9a421 AV |
876 | |
877 | if (!fep->phydev) | |
878 | return -ENODEV; | |
879 | ||
5b4b8454 | 880 | return phy_ethtool_gset(fep->phydev, cmd); |
48257c4f PA |
881 | } |
882 | ||
883 | static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
884 | { | |
885 | struct fs_enet_private *fep = netdev_priv(dev); | |
dfd9a421 AV |
886 | |
887 | if (!fep->phydev) | |
888 | return -ENODEV; | |
889 | ||
890 | return phy_ethtool_sset(fep->phydev, cmd); | |
48257c4f PA |
891 | } |
892 | ||
893 | static int fs_nway_reset(struct net_device *dev) | |
894 | { | |
5b4b8454 | 895 | return 0; |
48257c4f PA |
896 | } |
897 | ||
898 | static u32 fs_get_msglevel(struct net_device *dev) | |
899 | { | |
900 | struct fs_enet_private *fep = netdev_priv(dev); | |
901 | return fep->msg_enable; | |
902 | } | |
903 | ||
904 | static void fs_set_msglevel(struct net_device *dev, u32 value) | |
905 | { | |
906 | struct fs_enet_private *fep = netdev_priv(dev); | |
907 | fep->msg_enable = value; | |
908 | } | |
909 | ||
7282d491 | 910 | static const struct ethtool_ops fs_ethtool_ops = { |
48257c4f PA |
911 | .get_drvinfo = fs_get_drvinfo, |
912 | .get_regs_len = fs_get_regs_len, | |
913 | .get_settings = fs_get_settings, | |
914 | .set_settings = fs_set_settings, | |
915 | .nway_reset = fs_nway_reset, | |
916 | .get_link = ethtool_op_get_link, | |
917 | .get_msglevel = fs_get_msglevel, | |
918 | .set_msglevel = fs_set_msglevel, | |
48257c4f | 919 | .set_tx_csum = ethtool_op_set_tx_csum, /* local! */ |
48257c4f PA |
920 | .set_sg = ethtool_op_set_sg, |
921 | .get_regs = fs_get_regs, | |
922 | }; | |
923 | ||
924 | static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
925 | { | |
926 | struct fs_enet_private *fep = netdev_priv(dev); | |
927 | struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data; | |
48257c4f PA |
928 | |
929 | if (!netif_running(dev)) | |
930 | return -EINVAL; | |
931 | ||
5bd3670f | 932 | return phy_mii_ioctl(fep->phydev, mii, cmd); |
48257c4f PA |
933 | } |
934 | ||
935 | extern int fs_mii_connect(struct net_device *dev); | |
936 | extern void fs_mii_disconnect(struct net_device *dev); | |
937 | ||
48257c4f PA |
938 | /**************************************************************************************/ |
939 | ||
940 | /* handy pointer to the immap */ | |
31a5bb04 | 941 | void __iomem *fs_enet_immap = NULL; |
48257c4f PA |
942 | |
943 | static int setup_immap(void) | |
944 | { | |
48257c4f | 945 | #ifdef CONFIG_CPM1 |
976de6a8 SW |
946 | fs_enet_immap = ioremap(IMAP_ADDR, 0x4000); |
947 | WARN_ON(!fs_enet_immap); | |
948 | #elif defined(CONFIG_CPM2) | |
949 | fs_enet_immap = cpm2_immr; | |
48257c4f | 950 | #endif |
48257c4f PA |
951 | |
952 | return 0; | |
953 | } | |
954 | ||
955 | static void cleanup_immap(void) | |
956 | { | |
976de6a8 SW |
957 | #if defined(CONFIG_CPM1) |
958 | iounmap(fs_enet_immap); | |
959 | #endif | |
48257c4f PA |
960 | } |
961 | ||
962 | /**************************************************************************************/ | |
963 | ||
976de6a8 SW |
964 | static int __devinit find_phy(struct device_node *np, |
965 | struct fs_platform_info *fpi) | |
966 | { | |
967 | struct device_node *phynode, *mdionode; | |
d8b35fac | 968 | int ret = 0, len, bus_id; |
70f782e1 JF |
969 | const u32 *data; |
970 | ||
971 | data = of_get_property(np, "fixed-link", NULL); | |
972 | if (data) { | |
9d9326d3 | 973 | snprintf(fpi->bus_id, 16, "%x:%02x", 0, *data); |
70f782e1 JF |
974 | return 0; |
975 | } | |
976de6a8 | 976 | |
70f782e1 | 977 | data = of_get_property(np, "phy-handle", &len); |
976de6a8 SW |
978 | if (!data || len != 4) |
979 | return -EINVAL; | |
980 | ||
981 | phynode = of_find_node_by_phandle(*data); | |
982 | if (!phynode) | |
983 | return -EINVAL; | |
984 | ||
d8b35fac LP |
985 | data = of_get_property(phynode, "reg", &len); |
986 | if (!data || len != 4) { | |
987 | ret = -EINVAL; | |
976de6a8 | 988 | goto out_put_phy; |
d8b35fac | 989 | } |
976de6a8 | 990 | |
d8b35fac LP |
991 | mdionode = of_get_parent(phynode); |
992 | if (!mdionode) { | |
993 | ret = -EINVAL; | |
994 | goto out_put_phy; | |
995 | } | |
976de6a8 | 996 | |
d8b35fac LP |
997 | bus_id = of_get_gpio(mdionode, 0); |
998 | if (bus_id < 0) { | |
999 | struct resource res; | |
1000 | ret = of_address_to_resource(mdionode, 0, &res); | |
1001 | if (ret) | |
1002 | goto out_put_mdio; | |
1003 | bus_id = res.start; | |
1004 | } | |
976de6a8 | 1005 | |
d8b35fac | 1006 | snprintf(fpi->bus_id, 16, "%x:%02x", bus_id, *data); |
976de6a8 SW |
1007 | |
1008 | out_put_mdio: | |
1009 | of_node_put(mdionode); | |
1010 | out_put_phy: | |
1011 | of_node_put(phynode); | |
1012 | return ret; | |
1013 | } | |
1014 | ||
1015 | #ifdef CONFIG_FS_ENET_HAS_FEC | |
1016 | #define IS_FEC(match) ((match)->data == &fs_fec_ops) | |
1017 | #else | |
1018 | #define IS_FEC(match) 0 | |
1019 | #endif | |
1020 | ||
1021 | static int __devinit fs_enet_probe(struct of_device *ofdev, | |
1022 | const struct of_device_id *match) | |
1023 | { | |
1024 | struct net_device *ndev; | |
1025 | struct fs_enet_private *fep; | |
1026 | struct fs_platform_info *fpi; | |
1027 | const u32 *data; | |
1028 | const u8 *mac_addr; | |
1029 | int privsize, len, ret = -ENODEV; | |
1030 | ||
1031 | fpi = kzalloc(sizeof(*fpi), GFP_KERNEL); | |
1032 | if (!fpi) | |
1033 | return -ENOMEM; | |
1034 | ||
1035 | if (!IS_FEC(match)) { | |
1036 | data = of_get_property(ofdev->node, "fsl,cpm-command", &len); | |
1037 | if (!data || len != 4) | |
1038 | goto out_free_fpi; | |
1039 | ||
1040 | fpi->cp_command = *data; | |
1041 | } | |
1042 | ||
1043 | fpi->rx_ring = 32; | |
1044 | fpi->tx_ring = 32; | |
1045 | fpi->rx_copybreak = 240; | |
f860f49e | 1046 | fpi->use_napi = 1; |
976de6a8 SW |
1047 | fpi->napi_weight = 17; |
1048 | ||
1049 | ret = find_phy(ofdev->node, fpi); | |
1050 | if (ret) | |
1051 | goto out_free_fpi; | |
1052 | ||
1053 | privsize = sizeof(*fep) + | |
1054 | sizeof(struct sk_buff **) * | |
1055 | (fpi->rx_ring + fpi->tx_ring); | |
1056 | ||
1057 | ndev = alloc_etherdev(privsize); | |
1058 | if (!ndev) { | |
1059 | ret = -ENOMEM; | |
1060 | goto out_free_fpi; | |
1061 | } | |
1062 | ||
976de6a8 SW |
1063 | dev_set_drvdata(&ofdev->dev, ndev); |
1064 | ||
1065 | fep = netdev_priv(ndev); | |
1066 | fep->dev = &ofdev->dev; | |
f860f49e | 1067 | fep->ndev = ndev; |
976de6a8 SW |
1068 | fep->fpi = fpi; |
1069 | fep->ops = match->data; | |
1070 | ||
1071 | ret = fep->ops->setup_data(ndev); | |
1072 | if (ret) | |
1073 | goto out_free_dev; | |
1074 | ||
1075 | fep->rx_skbuff = (struct sk_buff **)&fep[1]; | |
1076 | fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring; | |
1077 | ||
1078 | spin_lock_init(&fep->lock); | |
1079 | spin_lock_init(&fep->tx_lock); | |
1080 | ||
1081 | mac_addr = of_get_mac_address(ofdev->node); | |
1082 | if (mac_addr) | |
1083 | memcpy(ndev->dev_addr, mac_addr, 6); | |
1084 | ||
1085 | ret = fep->ops->allocate_bd(ndev); | |
1086 | if (ret) | |
1087 | goto out_cleanup_data; | |
1088 | ||
1089 | fep->rx_bd_base = fep->ring_base; | |
1090 | fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring; | |
1091 | ||
1092 | fep->tx_ring = fpi->tx_ring; | |
1093 | fep->rx_ring = fpi->rx_ring; | |
1094 | ||
1095 | ndev->open = fs_enet_open; | |
1096 | ndev->hard_start_xmit = fs_enet_start_xmit; | |
1097 | ndev->tx_timeout = fs_timeout; | |
1098 | ndev->watchdog_timeo = 2 * HZ; | |
1099 | ndev->stop = fs_enet_close; | |
1100 | ndev->get_stats = fs_enet_get_stats; | |
1101 | ndev->set_multicast_list = fs_set_multicast_list; | |
7385d595 AD |
1102 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1103 | ndev->poll_controller = fs_enet_netpoll; | |
1104 | #endif | |
f860f49e SW |
1105 | if (fpi->use_napi) |
1106 | netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi, | |
1107 | fpi->napi_weight); | |
1108 | ||
976de6a8 SW |
1109 | ndev->ethtool_ops = &fs_ethtool_ops; |
1110 | ndev->do_ioctl = fs_ioctl; | |
1111 | ||
1112 | init_timer(&fep->phy_timer_list); | |
1113 | ||
1114 | netif_carrier_off(ndev); | |
1115 | ||
1116 | ret = register_netdev(ndev); | |
1117 | if (ret) | |
1118 | goto out_free_bd; | |
1119 | ||
7c510e4b | 1120 | printk(KERN_INFO "%s: fs_enet: %pM\n", ndev->name, ndev->dev_addr); |
976de6a8 SW |
1121 | |
1122 | return 0; | |
1123 | ||
1124 | out_free_bd: | |
1125 | fep->ops->free_bd(ndev); | |
1126 | out_cleanup_data: | |
1127 | fep->ops->cleanup_data(ndev); | |
1128 | out_free_dev: | |
1129 | free_netdev(ndev); | |
1130 | dev_set_drvdata(&ofdev->dev, NULL); | |
1131 | out_free_fpi: | |
1132 | kfree(fpi); | |
1133 | return ret; | |
1134 | } | |
1135 | ||
1136 | static int fs_enet_remove(struct of_device *ofdev) | |
1137 | { | |
1138 | struct net_device *ndev = dev_get_drvdata(&ofdev->dev); | |
1139 | struct fs_enet_private *fep = netdev_priv(ndev); | |
1140 | ||
1141 | unregister_netdev(ndev); | |
1142 | ||
1143 | fep->ops->free_bd(ndev); | |
1144 | fep->ops->cleanup_data(ndev); | |
1145 | dev_set_drvdata(fep->dev, NULL); | |
1146 | ||
1147 | free_netdev(ndev); | |
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | static struct of_device_id fs_enet_match[] = { | |
1152 | #ifdef CONFIG_FS_ENET_HAS_SCC | |
1153 | { | |
1154 | .compatible = "fsl,cpm1-scc-enet", | |
1155 | .data = (void *)&fs_scc_ops, | |
1156 | }, | |
f4f62301 HS |
1157 | { |
1158 | .compatible = "fsl,cpm2-scc-enet", | |
1159 | .data = (void *)&fs_scc_ops, | |
1160 | }, | |
976de6a8 SW |
1161 | #endif |
1162 | #ifdef CONFIG_FS_ENET_HAS_FCC | |
1163 | { | |
1164 | .compatible = "fsl,cpm2-fcc-enet", | |
1165 | .data = (void *)&fs_fcc_ops, | |
1166 | }, | |
1167 | #endif | |
1168 | #ifdef CONFIG_FS_ENET_HAS_FEC | |
1169 | { | |
1170 | .compatible = "fsl,pq1-fec-enet", | |
1171 | .data = (void *)&fs_fec_ops, | |
1172 | }, | |
1173 | #endif | |
1174 | {} | |
1175 | }; | |
1176 | ||
1177 | static struct of_platform_driver fs_enet_driver = { | |
1178 | .name = "fs_enet", | |
1179 | .match_table = fs_enet_match, | |
1180 | .probe = fs_enet_probe, | |
1181 | .remove = fs_enet_remove, | |
1182 | }; | |
1183 | ||
1184 | static int __init fs_init(void) | |
1185 | { | |
1186 | int r = setup_immap(); | |
1187 | if (r != 0) | |
1188 | return r; | |
1189 | ||
1190 | r = of_register_platform_driver(&fs_enet_driver); | |
1191 | if (r != 0) | |
1192 | goto out; | |
1193 | ||
1194 | return 0; | |
1195 | ||
1196 | out: | |
1197 | cleanup_immap(); | |
1198 | return r; | |
1199 | } | |
1200 | ||
1201 | static void __exit fs_cleanup(void) | |
1202 | { | |
1203 | of_unregister_platform_driver(&fs_enet_driver); | |
1204 | cleanup_immap(); | |
1205 | } | |
48257c4f | 1206 | |
9b8ee8e7 VB |
1207 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1208 | static void fs_enet_netpoll(struct net_device *dev) | |
1209 | { | |
1210 | disable_irq(dev->irq); | |
7385d595 | 1211 | fs_enet_interrupt(dev->irq, dev); |
9b8ee8e7 VB |
1212 | enable_irq(dev->irq); |
1213 | } | |
1214 | #endif | |
1215 | ||
48257c4f PA |
1216 | /**************************************************************************************/ |
1217 | ||
1218 | module_init(fs_init); | |
1219 | module_exit(fs_cleanup); |