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> |
aa73832c GL |
39 | #include <linux/of.h> |
40 | #include <linux/of_mdio.h> | |
b219108c | 41 | #include <linux/of_platform.h> |
8725f25a | 42 | #include <linux/of_gpio.h> |
4b6ba8aa | 43 | #include <linux/of_net.h> |
48257c4f PA |
44 | |
45 | #include <linux/vmalloc.h> | |
48257c4f PA |
46 | #include <asm/pgtable.h> |
47 | #include <asm/irq.h> | |
48 | #include <asm/uaccess.h> | |
49 | ||
50 | #include "fs_enet.h" | |
51 | ||
52 | /*************************************************/ | |
53 | ||
48257c4f PA |
54 | MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>"); |
55 | MODULE_DESCRIPTION("Freescale Ethernet Driver"); | |
56 | MODULE_LICENSE("GPL"); | |
57 | MODULE_VERSION(DRV_MODULE_VERSION); | |
58 | ||
31a5bb04 | 59 | static int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */ |
8d3b33f6 | 60 | module_param(fs_enet_debug, int, 0); |
48257c4f PA |
61 | MODULE_PARM_DESC(fs_enet_debug, |
62 | "Freescale bitmapped debugging message enable value"); | |
63 | ||
9b8ee8e7 VB |
64 | #ifdef CONFIG_NET_POLL_CONTROLLER |
65 | static void fs_enet_netpoll(struct net_device *dev); | |
66 | #endif | |
48257c4f PA |
67 | |
68 | static void fs_set_multicast_list(struct net_device *dev) | |
69 | { | |
70 | struct fs_enet_private *fep = netdev_priv(dev); | |
71 | ||
72 | (*fep->ops->set_multicast_list)(dev); | |
73 | } | |
74 | ||
0d0d9c15 SW |
75 | static void skb_align(struct sk_buff *skb, int align) |
76 | { | |
77 | int off = ((unsigned long)skb->data) & (align - 1); | |
78 | ||
79 | if (off) | |
80 | skb_reserve(skb, align - off); | |
81 | } | |
82 | ||
48257c4f | 83 | /* NAPI receive function */ |
bea3348e | 84 | static int fs_enet_rx_napi(struct napi_struct *napi, int budget) |
48257c4f | 85 | { |
bea3348e | 86 | struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi); |
f860f49e | 87 | struct net_device *dev = fep->ndev; |
48257c4f | 88 | const struct fs_platform_info *fpi = fep->fpi; |
31a5bb04 | 89 | cbd_t __iomem *bdp; |
48257c4f PA |
90 | struct sk_buff *skb, *skbn, *skbt; |
91 | int received = 0; | |
92 | u16 pkt_len, sc; | |
93 | int curidx; | |
48257c4f | 94 | |
48257c4f PA |
95 | /* |
96 | * First, grab all of the stats for the incoming packet. | |
97 | * These get messed up if we get called due to a busy condition. | |
98 | */ | |
99 | bdp = fep->cur_rx; | |
100 | ||
101 | /* clear RX status bits for napi*/ | |
102 | (*fep->ops->napi_clear_rx_event)(dev); | |
103 | ||
104 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { | |
48257c4f PA |
105 | curidx = bdp - fep->rx_bd_base; |
106 | ||
107 | /* | |
108 | * Since we have allocated space to hold a complete frame, | |
109 | * the last indicator should be set. | |
110 | */ | |
111 | if ((sc & BD_ENET_RX_LAST) == 0) | |
fcb6a1c8 | 112 | dev_warn(fep->dev, "rcv is not +last\n"); |
48257c4f PA |
113 | |
114 | /* | |
9b8ee8e7 | 115 | * Check for errors. |
48257c4f PA |
116 | */ |
117 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | | |
118 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { | |
119 | fep->stats.rx_errors++; | |
120 | /* Frame too long or too short. */ | |
121 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) | |
122 | fep->stats.rx_length_errors++; | |
123 | /* Frame alignment */ | |
124 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) | |
125 | fep->stats.rx_frame_errors++; | |
126 | /* CRC Error */ | |
127 | if (sc & BD_ENET_RX_CR) | |
128 | fep->stats.rx_crc_errors++; | |
129 | /* FIFO overrun */ | |
130 | if (sc & BD_ENET_RX_OV) | |
131 | fep->stats.rx_crc_errors++; | |
132 | ||
133 | skb = fep->rx_skbuff[curidx]; | |
134 | ||
34e30d61 | 135 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
136 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
137 | DMA_FROM_DEVICE); | |
138 | ||
139 | skbn = skb; | |
140 | ||
141 | } else { | |
48257c4f PA |
142 | skb = fep->rx_skbuff[curidx]; |
143 | ||
34e30d61 | 144 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
145 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
146 | DMA_FROM_DEVICE); | |
147 | ||
148 | /* | |
149 | * Process the incoming frame. | |
150 | */ | |
151 | fep->stats.rx_packets++; | |
152 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ | |
153 | fep->stats.rx_bytes += pkt_len + 4; | |
154 | ||
155 | if (pkt_len <= fpi->rx_copybreak) { | |
156 | /* +2 to make IP header L1 cache aligned */ | |
157 | skbn = dev_alloc_skb(pkt_len + 2); | |
158 | if (skbn != NULL) { | |
159 | skb_reserve(skbn, 2); /* align IP header */ | |
d626f62b ACM |
160 | skb_copy_from_linear_data(skb, |
161 | skbn->data, pkt_len); | |
48257c4f PA |
162 | /* swap */ |
163 | skbt = skb; | |
164 | skb = skbn; | |
165 | skbn = skbt; | |
166 | } | |
0d0d9c15 | 167 | } else { |
48257c4f PA |
168 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); |
169 | ||
0d0d9c15 SW |
170 | if (skbn) |
171 | skb_align(skbn, ENET_RX_ALIGN); | |
172 | } | |
173 | ||
48257c4f | 174 | if (skbn != NULL) { |
48257c4f PA |
175 | skb_put(skb, pkt_len); /* Make room */ |
176 | skb->protocol = eth_type_trans(skb, dev); | |
177 | received++; | |
178 | netif_receive_skb(skb); | |
179 | } else { | |
fcb6a1c8 AG |
180 | dev_warn(fep->dev, |
181 | "Memory squeeze, dropping packet.\n"); | |
48257c4f PA |
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 */ |
288379f0 | 212 | napi_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) | |
fcb6a1c8 | 243 | dev_warn(fep->dev, "rcv is not +last\n"); |
48257c4f PA |
244 | |
245 | /* | |
9b8ee8e7 | 246 | * Check for errors. |
48257c4f PA |
247 | */ |
248 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | | |
249 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { | |
250 | fep->stats.rx_errors++; | |
251 | /* Frame too long or too short. */ | |
252 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) | |
253 | fep->stats.rx_length_errors++; | |
254 | /* Frame alignment */ | |
255 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) | |
256 | fep->stats.rx_frame_errors++; | |
257 | /* CRC Error */ | |
258 | if (sc & BD_ENET_RX_CR) | |
259 | fep->stats.rx_crc_errors++; | |
260 | /* FIFO overrun */ | |
261 | if (sc & BD_ENET_RX_OV) | |
262 | fep->stats.rx_crc_errors++; | |
263 | ||
264 | skb = fep->rx_skbuff[curidx]; | |
265 | ||
34e30d61 | 266 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
267 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
268 | DMA_FROM_DEVICE); | |
269 | ||
270 | skbn = skb; | |
271 | ||
272 | } else { | |
273 | ||
274 | skb = fep->rx_skbuff[curidx]; | |
275 | ||
34e30d61 | 276 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
277 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
278 | DMA_FROM_DEVICE); | |
279 | ||
280 | /* | |
281 | * Process the incoming frame. | |
282 | */ | |
283 | fep->stats.rx_packets++; | |
284 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ | |
285 | fep->stats.rx_bytes += pkt_len + 4; | |
286 | ||
287 | if (pkt_len <= fpi->rx_copybreak) { | |
288 | /* +2 to make IP header L1 cache aligned */ | |
289 | skbn = dev_alloc_skb(pkt_len + 2); | |
290 | if (skbn != NULL) { | |
291 | skb_reserve(skbn, 2); /* align IP header */ | |
d626f62b ACM |
292 | skb_copy_from_linear_data(skb, |
293 | skbn->data, pkt_len); | |
48257c4f PA |
294 | /* swap */ |
295 | skbt = skb; | |
296 | skb = skbn; | |
297 | skbn = skbt; | |
298 | } | |
0d0d9c15 | 299 | } else { |
48257c4f PA |
300 | skbn = dev_alloc_skb(ENET_RX_FRSIZE); |
301 | ||
0d0d9c15 SW |
302 | if (skbn) |
303 | skb_align(skbn, ENET_RX_ALIGN); | |
304 | } | |
305 | ||
48257c4f | 306 | if (skbn != NULL) { |
48257c4f PA |
307 | skb_put(skb, pkt_len); /* Make room */ |
308 | skb->protocol = eth_type_trans(skb, dev); | |
309 | received++; | |
310 | netif_rx(skb); | |
311 | } else { | |
fcb6a1c8 AG |
312 | dev_warn(fep->dev, |
313 | "Memory squeeze, dropping packet.\n"); | |
48257c4f PA |
314 | fep->stats.rx_dropped++; |
315 | skbn = skb; | |
316 | } | |
317 | } | |
318 | ||
319 | fep->rx_skbuff[curidx] = skbn; | |
320 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data, | |
321 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
322 | DMA_FROM_DEVICE)); | |
323 | CBDW_DATLEN(bdp, 0); | |
324 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); | |
325 | ||
326 | /* | |
9b8ee8e7 | 327 | * Update BD pointer to next entry. |
48257c4f PA |
328 | */ |
329 | if ((sc & BD_ENET_RX_WRAP) == 0) | |
330 | bdp++; | |
331 | else | |
332 | bdp = fep->rx_bd_base; | |
333 | ||
334 | (*fep->ops->rx_bd_done)(dev); | |
335 | } | |
336 | ||
337 | fep->cur_rx = bdp; | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | static void fs_enet_tx(struct net_device *dev) | |
343 | { | |
344 | struct fs_enet_private *fep = netdev_priv(dev); | |
31a5bb04 | 345 | cbd_t __iomem *bdp; |
48257c4f PA |
346 | struct sk_buff *skb; |
347 | int dirtyidx, do_wake, do_restart; | |
348 | u16 sc; | |
349 | ||
aa90f503 | 350 | spin_lock(&fep->tx_lock); |
48257c4f PA |
351 | bdp = fep->dirty_tx; |
352 | ||
353 | do_wake = do_restart = 0; | |
354 | while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) { | |
48257c4f PA |
355 | dirtyidx = bdp - fep->tx_bd_base; |
356 | ||
357 | if (fep->tx_free == fep->tx_ring) | |
358 | break; | |
359 | ||
360 | skb = fep->tx_skbuff[dirtyidx]; | |
361 | ||
362 | /* | |
9b8ee8e7 | 363 | * Check for errors. |
48257c4f PA |
364 | */ |
365 | if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | | |
366 | BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) { | |
367 | ||
368 | if (sc & BD_ENET_TX_HB) /* No heartbeat */ | |
369 | fep->stats.tx_heartbeat_errors++; | |
370 | if (sc & BD_ENET_TX_LC) /* Late collision */ | |
371 | fep->stats.tx_window_errors++; | |
372 | if (sc & BD_ENET_TX_RL) /* Retrans limit */ | |
373 | fep->stats.tx_aborted_errors++; | |
374 | if (sc & BD_ENET_TX_UN) /* Underrun */ | |
375 | fep->stats.tx_fifo_errors++; | |
376 | if (sc & BD_ENET_TX_CSL) /* Carrier lost */ | |
377 | fep->stats.tx_carrier_errors++; | |
378 | ||
379 | if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) { | |
380 | fep->stats.tx_errors++; | |
381 | do_restart = 1; | |
382 | } | |
383 | } else | |
384 | fep->stats.tx_packets++; | |
385 | ||
fcb6a1c8 AG |
386 | if (sc & BD_ENET_TX_READY) { |
387 | dev_warn(fep->dev, | |
388 | "HEY! Enet xmit interrupt and TX_READY.\n"); | |
389 | } | |
48257c4f PA |
390 | |
391 | /* | |
392 | * Deferred means some collisions occurred during transmit, | |
393 | * but we eventually sent the packet OK. | |
394 | */ | |
395 | if (sc & BD_ENET_TX_DEF) | |
396 | fep->stats.collisions++; | |
397 | ||
398 | /* unmap */ | |
34e30d61 PA |
399 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
400 | skb->len, DMA_TO_DEVICE); | |
48257c4f PA |
401 | |
402 | /* | |
9b8ee8e7 | 403 | * Free the sk buffer associated with this last transmit. |
48257c4f PA |
404 | */ |
405 | dev_kfree_skb_irq(skb); | |
406 | fep->tx_skbuff[dirtyidx] = NULL; | |
407 | ||
408 | /* | |
9b8ee8e7 | 409 | * Update pointer to next buffer descriptor to be transmitted. |
48257c4f PA |
410 | */ |
411 | if ((sc & BD_ENET_TX_WRAP) == 0) | |
412 | bdp++; | |
413 | else | |
414 | bdp = fep->tx_bd_base; | |
415 | ||
416 | /* | |
417 | * Since we have freed up a buffer, the ring is no longer | |
418 | * full. | |
419 | */ | |
420 | if (!fep->tx_free++) | |
421 | do_wake = 1; | |
422 | } | |
423 | ||
424 | fep->dirty_tx = bdp; | |
425 | ||
426 | if (do_restart) | |
427 | (*fep->ops->tx_restart)(dev); | |
428 | ||
aa90f503 | 429 | spin_unlock(&fep->tx_lock); |
48257c4f PA |
430 | |
431 | if (do_wake) | |
432 | netif_wake_queue(dev); | |
433 | } | |
434 | ||
435 | /* | |
436 | * The interrupt handler. | |
437 | * This is called from the MPC core interrupt. | |
438 | */ | |
439 | static irqreturn_t | |
7d12e780 | 440 | fs_enet_interrupt(int irq, void *dev_id) |
48257c4f PA |
441 | { |
442 | struct net_device *dev = dev_id; | |
443 | struct fs_enet_private *fep; | |
444 | const struct fs_platform_info *fpi; | |
445 | u32 int_events; | |
446 | u32 int_clr_events; | |
447 | int nr, napi_ok; | |
448 | int handled; | |
449 | ||
450 | fep = netdev_priv(dev); | |
451 | fpi = fep->fpi; | |
452 | ||
453 | nr = 0; | |
454 | while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) { | |
48257c4f PA |
455 | nr++; |
456 | ||
457 | int_clr_events = int_events; | |
458 | if (fpi->use_napi) | |
459 | int_clr_events &= ~fep->ev_napi_rx; | |
460 | ||
461 | (*fep->ops->clear_int_events)(dev, int_clr_events); | |
462 | ||
463 | if (int_events & fep->ev_err) | |
464 | (*fep->ops->ev_error)(dev, int_events); | |
465 | ||
466 | if (int_events & fep->ev_rx) { | |
467 | if (!fpi->use_napi) | |
468 | fs_enet_rx_non_napi(dev); | |
469 | else { | |
bea3348e | 470 | napi_ok = napi_schedule_prep(&fep->napi); |
48257c4f PA |
471 | |
472 | (*fep->ops->napi_disable_rx)(dev); | |
473 | (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx); | |
474 | ||
475 | /* NOTE: it is possible for FCCs in NAPI mode */ | |
476 | /* to submit a spurious interrupt while in poll */ | |
477 | if (napi_ok) | |
288379f0 | 478 | __napi_schedule(&fep->napi); |
48257c4f PA |
479 | } |
480 | } | |
481 | ||
482 | if (int_events & fep->ev_tx) | |
483 | fs_enet_tx(dev); | |
484 | } | |
485 | ||
486 | handled = nr > 0; | |
487 | return IRQ_RETVAL(handled); | |
488 | } | |
489 | ||
490 | void fs_init_bds(struct net_device *dev) | |
491 | { | |
492 | struct fs_enet_private *fep = netdev_priv(dev); | |
31a5bb04 | 493 | cbd_t __iomem *bdp; |
48257c4f PA |
494 | struct sk_buff *skb; |
495 | int i; | |
496 | ||
497 | fs_cleanup_bds(dev); | |
498 | ||
499 | fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; | |
500 | fep->tx_free = fep->tx_ring; | |
501 | fep->cur_rx = fep->rx_bd_base; | |
502 | ||
503 | /* | |
9b8ee8e7 | 504 | * Initialize the receive buffer descriptors. |
48257c4f PA |
505 | */ |
506 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { | |
507 | skb = dev_alloc_skb(ENET_RX_FRSIZE); | |
508 | if (skb == NULL) { | |
fcb6a1c8 AG |
509 | dev_warn(fep->dev, |
510 | "Memory squeeze, unable to allocate skb\n"); | |
48257c4f PA |
511 | break; |
512 | } | |
0d0d9c15 | 513 | skb_align(skb, ENET_RX_ALIGN); |
48257c4f | 514 | fep->rx_skbuff[i] = skb; |
48257c4f PA |
515 | CBDW_BUFADDR(bdp, |
516 | dma_map_single(fep->dev, skb->data, | |
517 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
518 | DMA_FROM_DEVICE)); | |
519 | CBDW_DATLEN(bdp, 0); /* zero */ | |
520 | CBDW_SC(bdp, BD_ENET_RX_EMPTY | | |
521 | ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP)); | |
522 | } | |
523 | /* | |
9b8ee8e7 | 524 | * if we failed, fillup remainder |
48257c4f PA |
525 | */ |
526 | for (; i < fep->rx_ring; i++, bdp++) { | |
527 | fep->rx_skbuff[i] = NULL; | |
528 | CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP); | |
529 | } | |
530 | ||
531 | /* | |
9b8ee8e7 | 532 | * ...and the same for transmit. |
48257c4f PA |
533 | */ |
534 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { | |
535 | fep->tx_skbuff[i] = NULL; | |
536 | CBDW_BUFADDR(bdp, 0); | |
537 | CBDW_DATLEN(bdp, 0); | |
538 | CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP); | |
539 | } | |
540 | } | |
541 | ||
542 | void fs_cleanup_bds(struct net_device *dev) | |
543 | { | |
544 | struct fs_enet_private *fep = netdev_priv(dev); | |
545 | struct sk_buff *skb; | |
31a5bb04 | 546 | cbd_t __iomem *bdp; |
48257c4f PA |
547 | int i; |
548 | ||
549 | /* | |
9b8ee8e7 | 550 | * Reset SKB transmit buffers. |
48257c4f | 551 | */ |
34e30d61 | 552 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { |
48257c4f PA |
553 | if ((skb = fep->tx_skbuff[i]) == NULL) |
554 | continue; | |
555 | ||
556 | /* unmap */ | |
34e30d61 PA |
557 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
558 | skb->len, DMA_TO_DEVICE); | |
48257c4f PA |
559 | |
560 | fep->tx_skbuff[i] = NULL; | |
561 | dev_kfree_skb(skb); | |
562 | } | |
563 | ||
564 | /* | |
9b8ee8e7 | 565 | * Reset SKB receive buffers |
48257c4f | 566 | */ |
34e30d61 | 567 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { |
48257c4f PA |
568 | if ((skb = fep->rx_skbuff[i]) == NULL) |
569 | continue; | |
570 | ||
571 | /* unmap */ | |
34e30d61 | 572 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
573 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
574 | DMA_FROM_DEVICE); | |
575 | ||
576 | fep->rx_skbuff[i] = NULL; | |
577 | ||
578 | dev_kfree_skb(skb); | |
579 | } | |
580 | } | |
581 | ||
582 | /**********************************************************************************/ | |
583 | ||
cb395eaf AG |
584 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
585 | /* | |
586 | * MPC5121 FEC requeries 4-byte alignment for TX data buffer! | |
587 | */ | |
588 | static struct sk_buff *tx_skb_align_workaround(struct net_device *dev, | |
589 | struct sk_buff *skb) | |
590 | { | |
591 | struct sk_buff *new_skb; | |
592 | struct fs_enet_private *fep = netdev_priv(dev); | |
593 | ||
594 | /* Alloc new skb */ | |
595 | new_skb = dev_alloc_skb(skb->len + 4); | |
596 | if (!new_skb) { | |
597 | if (net_ratelimit()) { | |
598 | dev_warn(fep->dev, | |
599 | "Memory squeeze, dropping tx packet.\n"); | |
600 | } | |
601 | return NULL; | |
602 | } | |
603 | ||
604 | /* Make sure new skb is properly aligned */ | |
605 | skb_align(new_skb, 4); | |
606 | ||
607 | /* Copy data to new skb ... */ | |
608 | skb_copy_from_linear_data(skb, new_skb->data, skb->len); | |
609 | skb_put(new_skb, skb->len); | |
610 | ||
611 | /* ... and free an old one */ | |
612 | dev_kfree_skb_any(skb); | |
613 | ||
614 | return new_skb; | |
615 | } | |
616 | #endif | |
617 | ||
48257c4f PA |
618 | static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) |
619 | { | |
620 | struct fs_enet_private *fep = netdev_priv(dev); | |
31a5bb04 | 621 | cbd_t __iomem *bdp; |
48257c4f PA |
622 | int curidx; |
623 | u16 sc; | |
624 | unsigned long flags; | |
625 | ||
cb395eaf AG |
626 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
627 | if (((unsigned long)skb->data) & 0x3) { | |
628 | skb = tx_skb_align_workaround(dev, skb); | |
629 | if (!skb) { | |
630 | /* | |
631 | * We have lost packet due to memory allocation error | |
632 | * in tx_skb_align_workaround(). Hopefully original | |
633 | * skb is still valid, so try transmit it later. | |
634 | */ | |
635 | return NETDEV_TX_BUSY; | |
636 | } | |
637 | } | |
638 | #endif | |
48257c4f PA |
639 | spin_lock_irqsave(&fep->tx_lock, flags); |
640 | ||
641 | /* | |
9b8ee8e7 | 642 | * Fill in a Tx ring entry |
48257c4f PA |
643 | */ |
644 | bdp = fep->cur_tx; | |
645 | ||
646 | if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) { | |
647 | netif_stop_queue(dev); | |
648 | spin_unlock_irqrestore(&fep->tx_lock, flags); | |
649 | ||
650 | /* | |
651 | * Ooops. All transmit buffers are full. Bail out. | |
652 | * This should not happen, since the tx queue should be stopped. | |
653 | */ | |
fcb6a1c8 | 654 | dev_warn(fep->dev, "tx queue full!.\n"); |
48257c4f PA |
655 | return NETDEV_TX_BUSY; |
656 | } | |
657 | ||
658 | curidx = bdp - fep->tx_bd_base; | |
659 | /* | |
9b8ee8e7 | 660 | * Clear all of the status flags. |
48257c4f PA |
661 | */ |
662 | CBDC_SC(bdp, BD_ENET_TX_STATS); | |
663 | ||
664 | /* | |
9b8ee8e7 | 665 | * Save skb pointer. |
48257c4f PA |
666 | */ |
667 | fep->tx_skbuff[curidx] = skb; | |
668 | ||
669 | fep->stats.tx_bytes += skb->len; | |
670 | ||
671 | /* | |
9b8ee8e7 | 672 | * Push the data cache so the CPM does not get stale memory data. |
48257c4f PA |
673 | */ |
674 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, | |
675 | skb->data, skb->len, DMA_TO_DEVICE)); | |
676 | CBDW_DATLEN(bdp, skb->len); | |
677 | ||
48257c4f | 678 | /* |
9b8ee8e7 | 679 | * If this was the last BD in the ring, start at the beginning again. |
48257c4f PA |
680 | */ |
681 | if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) | |
682 | fep->cur_tx++; | |
683 | else | |
684 | fep->cur_tx = fep->tx_bd_base; | |
685 | ||
686 | if (!--fep->tx_free) | |
687 | netif_stop_queue(dev); | |
688 | ||
689 | /* Trigger transmission start */ | |
690 | sc = BD_ENET_TX_READY | BD_ENET_TX_INTR | | |
691 | BD_ENET_TX_LAST | BD_ENET_TX_TC; | |
692 | ||
693 | /* note that while FEC does not have this bit | |
694 | * it marks it as available for software use | |
695 | * yay for hw reuse :) */ | |
696 | if (skb->len <= 60) | |
697 | sc |= BD_ENET_TX_PAD; | |
698 | CBDS_SC(bdp, sc); | |
699 | ||
700 | (*fep->ops->tx_kickstart)(dev); | |
701 | ||
702 | spin_unlock_irqrestore(&fep->tx_lock, flags); | |
703 | ||
704 | return NETDEV_TX_OK; | |
705 | } | |
706 | ||
48257c4f PA |
707 | static void fs_timeout(struct net_device *dev) |
708 | { | |
709 | struct fs_enet_private *fep = netdev_priv(dev); | |
710 | unsigned long flags; | |
711 | int wake = 0; | |
712 | ||
713 | fep->stats.tx_errors++; | |
714 | ||
715 | spin_lock_irqsave(&fep->lock, flags); | |
716 | ||
717 | if (dev->flags & IFF_UP) { | |
5b4b8454 | 718 | phy_stop(fep->phydev); |
48257c4f PA |
719 | (*fep->ops->stop)(dev); |
720 | (*fep->ops->restart)(dev); | |
5b4b8454 | 721 | phy_start(fep->phydev); |
48257c4f PA |
722 | } |
723 | ||
5b4b8454 | 724 | phy_start(fep->phydev); |
48257c4f PA |
725 | wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY); |
726 | spin_unlock_irqrestore(&fep->lock, flags); | |
727 | ||
728 | if (wake) | |
729 | netif_wake_queue(dev); | |
730 | } | |
731 | ||
5b4b8454 VB |
732 | /*----------------------------------------------------------------------------- |
733 | * generic link-change handler - should be sufficient for most cases | |
734 | *-----------------------------------------------------------------------------*/ | |
735 | static void generic_adjust_link(struct net_device *dev) | |
736 | { | |
0fb300fa SW |
737 | struct fs_enet_private *fep = netdev_priv(dev); |
738 | struct phy_device *phydev = fep->phydev; | |
739 | int new_state = 0; | |
740 | ||
741 | if (phydev->link) { | |
742 | /* adjust to duplex mode */ | |
743 | if (phydev->duplex != fep->oldduplex) { | |
744 | new_state = 1; | |
745 | fep->oldduplex = phydev->duplex; | |
746 | } | |
747 | ||
748 | if (phydev->speed != fep->oldspeed) { | |
749 | new_state = 1; | |
750 | fep->oldspeed = phydev->speed; | |
751 | } | |
752 | ||
753 | if (!fep->oldlink) { | |
754 | new_state = 1; | |
755 | fep->oldlink = 1; | |
0fb300fa SW |
756 | } |
757 | ||
758 | if (new_state) | |
759 | fep->ops->restart(dev); | |
760 | } else if (fep->oldlink) { | |
761 | new_state = 1; | |
762 | fep->oldlink = 0; | |
763 | fep->oldspeed = 0; | |
764 | fep->oldduplex = -1; | |
0fb300fa SW |
765 | } |
766 | ||
767 | if (new_state && netif_msg_link(fep)) | |
768 | phy_print_status(phydev); | |
5b4b8454 VB |
769 | } |
770 | ||
771 | ||
772 | static void fs_adjust_link(struct net_device *dev) | |
773 | { | |
774 | struct fs_enet_private *fep = netdev_priv(dev); | |
775 | unsigned long flags; | |
776 | ||
777 | spin_lock_irqsave(&fep->lock, flags); | |
778 | ||
779 | if(fep->ops->adjust_link) | |
780 | fep->ops->adjust_link(dev); | |
781 | else | |
782 | generic_adjust_link(dev); | |
783 | ||
784 | spin_unlock_irqrestore(&fep->lock, flags); | |
785 | } | |
786 | ||
787 | static int fs_init_phy(struct net_device *dev) | |
788 | { | |
789 | struct fs_enet_private *fep = netdev_priv(dev); | |
790 | struct phy_device *phydev; | |
791 | ||
792 | fep->oldlink = 0; | |
793 | fep->oldspeed = 0; | |
794 | fep->oldduplex = -1; | |
eedbc705 AV |
795 | |
796 | phydev = of_phy_connect(dev, fep->fpi->phy_node, &fs_adjust_link, 0, | |
797 | PHY_INTERFACE_MODE_MII); | |
798 | if (!phydev) { | |
799 | phydev = of_phy_connect_fixed_link(dev, &fs_adjust_link, | |
800 | PHY_INTERFACE_MODE_MII); | |
5b4b8454 | 801 | } |
eedbc705 AV |
802 | if (!phydev) { |
803 | dev_err(&dev->dev, "Could not attach to PHY\n"); | |
804 | return -ENODEV; | |
5b4b8454 VB |
805 | } |
806 | ||
807 | fep->phydev = phydev; | |
808 | ||
809 | return 0; | |
810 | } | |
811 | ||
48257c4f PA |
812 | static int fs_enet_open(struct net_device *dev) |
813 | { | |
814 | struct fs_enet_private *fep = netdev_priv(dev); | |
48257c4f | 815 | int r; |
5b4b8454 | 816 | int err; |
48257c4f | 817 | |
f4f62301 HS |
818 | /* to initialize the fep->cur_rx,... */ |
819 | /* not doing this, will cause a crash in fs_enet_rx_napi */ | |
820 | fs_init_bds(fep->ndev); | |
821 | ||
f860f49e SW |
822 | if (fep->fpi->use_napi) |
823 | napi_enable(&fep->napi); | |
bea3348e | 824 | |
48257c4f | 825 | /* Install our interrupt handler. */ |
31578140 KG |
826 | r = request_irq(fep->interrupt, fs_enet_interrupt, IRQF_SHARED, |
827 | "fs_enet-mac", dev); | |
48257c4f | 828 | if (r != 0) { |
fcb6a1c8 | 829 | dev_err(fep->dev, "Could not allocate FS_ENET IRQ!"); |
f860f49e SW |
830 | if (fep->fpi->use_napi) |
831 | napi_disable(&fep->napi); | |
48257c4f PA |
832 | return -EINVAL; |
833 | } | |
834 | ||
5b4b8454 | 835 | err = fs_init_phy(dev); |
f860f49e | 836 | if (err) { |
d7e094d4 | 837 | free_irq(fep->interrupt, dev); |
f860f49e SW |
838 | if (fep->fpi->use_napi) |
839 | napi_disable(&fep->napi); | |
5b4b8454 | 840 | return err; |
bea3348e | 841 | } |
5b4b8454 | 842 | phy_start(fep->phydev); |
48257c4f | 843 | |
c8f15686 AV |
844 | netif_start_queue(dev); |
845 | ||
48257c4f PA |
846 | return 0; |
847 | } | |
848 | ||
849 | static int fs_enet_close(struct net_device *dev) | |
850 | { | |
851 | struct fs_enet_private *fep = netdev_priv(dev); | |
48257c4f PA |
852 | unsigned long flags; |
853 | ||
854 | netif_stop_queue(dev); | |
855 | netif_carrier_off(dev); | |
9a3c243d LP |
856 | if (fep->fpi->use_napi) |
857 | napi_disable(&fep->napi); | |
5b4b8454 | 858 | phy_stop(fep->phydev); |
48257c4f PA |
859 | |
860 | spin_lock_irqsave(&fep->lock, flags); | |
aa90f503 | 861 | spin_lock(&fep->tx_lock); |
48257c4f | 862 | (*fep->ops->stop)(dev); |
aa90f503 | 863 | spin_unlock(&fep->tx_lock); |
48257c4f PA |
864 | spin_unlock_irqrestore(&fep->lock, flags); |
865 | ||
866 | /* release any irqs */ | |
5b4b8454 VB |
867 | phy_disconnect(fep->phydev); |
868 | fep->phydev = NULL; | |
31578140 | 869 | free_irq(fep->interrupt, dev); |
48257c4f PA |
870 | |
871 | return 0; | |
872 | } | |
873 | ||
874 | static struct net_device_stats *fs_enet_get_stats(struct net_device *dev) | |
875 | { | |
876 | struct fs_enet_private *fep = netdev_priv(dev); | |
877 | return &fep->stats; | |
878 | } | |
879 | ||
880 | /*************************************************************************/ | |
881 | ||
882 | static void fs_get_drvinfo(struct net_device *dev, | |
883 | struct ethtool_drvinfo *info) | |
884 | { | |
885 | strcpy(info->driver, DRV_MODULE_NAME); | |
886 | strcpy(info->version, DRV_MODULE_VERSION); | |
887 | } | |
888 | ||
889 | static int fs_get_regs_len(struct net_device *dev) | |
890 | { | |
891 | struct fs_enet_private *fep = netdev_priv(dev); | |
892 | ||
893 | return (*fep->ops->get_regs_len)(dev); | |
894 | } | |
895 | ||
896 | static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs, | |
897 | void *p) | |
898 | { | |
899 | struct fs_enet_private *fep = netdev_priv(dev); | |
900 | unsigned long flags; | |
901 | int r, len; | |
902 | ||
903 | len = regs->len; | |
904 | ||
905 | spin_lock_irqsave(&fep->lock, flags); | |
906 | r = (*fep->ops->get_regs)(dev, p, &len); | |
907 | spin_unlock_irqrestore(&fep->lock, flags); | |
908 | ||
909 | if (r == 0) | |
910 | regs->version = 0; | |
911 | } | |
912 | ||
913 | static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
914 | { | |
915 | struct fs_enet_private *fep = netdev_priv(dev); | |
dfd9a421 AV |
916 | |
917 | if (!fep->phydev) | |
918 | return -ENODEV; | |
919 | ||
5b4b8454 | 920 | return phy_ethtool_gset(fep->phydev, cmd); |
48257c4f PA |
921 | } |
922 | ||
923 | static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
924 | { | |
925 | struct fs_enet_private *fep = netdev_priv(dev); | |
dfd9a421 AV |
926 | |
927 | if (!fep->phydev) | |
928 | return -ENODEV; | |
929 | ||
930 | return phy_ethtool_sset(fep->phydev, cmd); | |
48257c4f PA |
931 | } |
932 | ||
933 | static int fs_nway_reset(struct net_device *dev) | |
934 | { | |
5b4b8454 | 935 | return 0; |
48257c4f PA |
936 | } |
937 | ||
938 | static u32 fs_get_msglevel(struct net_device *dev) | |
939 | { | |
940 | struct fs_enet_private *fep = netdev_priv(dev); | |
941 | return fep->msg_enable; | |
942 | } | |
943 | ||
944 | static void fs_set_msglevel(struct net_device *dev, u32 value) | |
945 | { | |
946 | struct fs_enet_private *fep = netdev_priv(dev); | |
947 | fep->msg_enable = value; | |
948 | } | |
949 | ||
7282d491 | 950 | static const struct ethtool_ops fs_ethtool_ops = { |
48257c4f PA |
951 | .get_drvinfo = fs_get_drvinfo, |
952 | .get_regs_len = fs_get_regs_len, | |
953 | .get_settings = fs_get_settings, | |
954 | .set_settings = fs_set_settings, | |
955 | .nway_reset = fs_nway_reset, | |
956 | .get_link = ethtool_op_get_link, | |
957 | .get_msglevel = fs_get_msglevel, | |
958 | .set_msglevel = fs_set_msglevel, | |
48257c4f | 959 | .set_tx_csum = ethtool_op_set_tx_csum, /* local! */ |
48257c4f PA |
960 | .set_sg = ethtool_op_set_sg, |
961 | .get_regs = fs_get_regs, | |
962 | }; | |
963 | ||
964 | static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
965 | { | |
966 | struct fs_enet_private *fep = netdev_priv(dev); | |
48257c4f PA |
967 | |
968 | if (!netif_running(dev)) | |
969 | return -EINVAL; | |
970 | ||
28b04113 | 971 | return phy_mii_ioctl(fep->phydev, rq, cmd); |
48257c4f PA |
972 | } |
973 | ||
974 | extern int fs_mii_connect(struct net_device *dev); | |
975 | extern void fs_mii_disconnect(struct net_device *dev); | |
976 | ||
48257c4f PA |
977 | /**************************************************************************************/ |
978 | ||
976de6a8 SW |
979 | #ifdef CONFIG_FS_ENET_HAS_FEC |
980 | #define IS_FEC(match) ((match)->data == &fs_fec_ops) | |
981 | #else | |
982 | #define IS_FEC(match) 0 | |
983 | #endif | |
984 | ||
8c02acd7 AB |
985 | static const struct net_device_ops fs_enet_netdev_ops = { |
986 | .ndo_open = fs_enet_open, | |
987 | .ndo_stop = fs_enet_close, | |
988 | .ndo_get_stats = fs_enet_get_stats, | |
989 | .ndo_start_xmit = fs_enet_start_xmit, | |
990 | .ndo_tx_timeout = fs_timeout, | |
991 | .ndo_set_multicast_list = fs_set_multicast_list, | |
992 | .ndo_do_ioctl = fs_ioctl, | |
993 | .ndo_validate_addr = eth_validate_addr, | |
994 | .ndo_set_mac_address = eth_mac_addr, | |
995 | .ndo_change_mtu = eth_change_mtu, | |
996 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
997 | .ndo_poll_controller = fs_enet_netpoll, | |
998 | #endif | |
999 | }; | |
1000 | ||
2dc11581 | 1001 | static int __devinit fs_enet_probe(struct platform_device *ofdev, |
976de6a8 SW |
1002 | const struct of_device_id *match) |
1003 | { | |
1004 | struct net_device *ndev; | |
1005 | struct fs_enet_private *fep; | |
1006 | struct fs_platform_info *fpi; | |
1007 | const u32 *data; | |
1008 | const u8 *mac_addr; | |
1009 | int privsize, len, ret = -ENODEV; | |
1010 | ||
1011 | fpi = kzalloc(sizeof(*fpi), GFP_KERNEL); | |
1012 | if (!fpi) | |
1013 | return -ENOMEM; | |
1014 | ||
1015 | if (!IS_FEC(match)) { | |
61c7a080 | 1016 | data = of_get_property(ofdev->dev.of_node, "fsl,cpm-command", &len); |
976de6a8 SW |
1017 | if (!data || len != 4) |
1018 | goto out_free_fpi; | |
1019 | ||
1020 | fpi->cp_command = *data; | |
1021 | } | |
1022 | ||
1023 | fpi->rx_ring = 32; | |
1024 | fpi->tx_ring = 32; | |
1025 | fpi->rx_copybreak = 240; | |
f860f49e | 1026 | fpi->use_napi = 1; |
976de6a8 | 1027 | fpi->napi_weight = 17; |
61c7a080 GL |
1028 | fpi->phy_node = of_parse_phandle(ofdev->dev.of_node, "phy-handle", 0); |
1029 | if ((!fpi->phy_node) && (!of_get_property(ofdev->dev.of_node, "fixed-link", | |
aa73832c | 1030 | NULL))) |
976de6a8 SW |
1031 | goto out_free_fpi; |
1032 | ||
1033 | privsize = sizeof(*fep) + | |
1034 | sizeof(struct sk_buff **) * | |
1035 | (fpi->rx_ring + fpi->tx_ring); | |
1036 | ||
1037 | ndev = alloc_etherdev(privsize); | |
1038 | if (!ndev) { | |
1039 | ret = -ENOMEM; | |
e8f7f43a | 1040 | goto out_put; |
976de6a8 SW |
1041 | } |
1042 | ||
eedbc705 | 1043 | SET_NETDEV_DEV(ndev, &ofdev->dev); |
976de6a8 SW |
1044 | dev_set_drvdata(&ofdev->dev, ndev); |
1045 | ||
1046 | fep = netdev_priv(ndev); | |
1047 | fep->dev = &ofdev->dev; | |
f860f49e | 1048 | fep->ndev = ndev; |
976de6a8 SW |
1049 | fep->fpi = fpi; |
1050 | fep->ops = match->data; | |
1051 | ||
1052 | ret = fep->ops->setup_data(ndev); | |
1053 | if (ret) | |
1054 | goto out_free_dev; | |
1055 | ||
1056 | fep->rx_skbuff = (struct sk_buff **)&fep[1]; | |
1057 | fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring; | |
1058 | ||
1059 | spin_lock_init(&fep->lock); | |
1060 | spin_lock_init(&fep->tx_lock); | |
1061 | ||
61c7a080 | 1062 | mac_addr = of_get_mac_address(ofdev->dev.of_node); |
976de6a8 SW |
1063 | if (mac_addr) |
1064 | memcpy(ndev->dev_addr, mac_addr, 6); | |
1065 | ||
1066 | ret = fep->ops->allocate_bd(ndev); | |
1067 | if (ret) | |
1068 | goto out_cleanup_data; | |
1069 | ||
1070 | fep->rx_bd_base = fep->ring_base; | |
1071 | fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring; | |
1072 | ||
1073 | fep->tx_ring = fpi->tx_ring; | |
1074 | fep->rx_ring = fpi->rx_ring; | |
1075 | ||
8c02acd7 | 1076 | ndev->netdev_ops = &fs_enet_netdev_ops; |
976de6a8 | 1077 | ndev->watchdog_timeo = 2 * HZ; |
f860f49e SW |
1078 | if (fpi->use_napi) |
1079 | netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi, | |
1080 | fpi->napi_weight); | |
1081 | ||
976de6a8 | 1082 | ndev->ethtool_ops = &fs_ethtool_ops; |
976de6a8 SW |
1083 | |
1084 | init_timer(&fep->phy_timer_list); | |
1085 | ||
1086 | netif_carrier_off(ndev); | |
1087 | ||
1088 | ret = register_netdev(ndev); | |
1089 | if (ret) | |
1090 | goto out_free_bd; | |
1091 | ||
fcb6a1c8 | 1092 | pr_info("%s: fs_enet: %pM\n", ndev->name, ndev->dev_addr); |
976de6a8 SW |
1093 | |
1094 | return 0; | |
1095 | ||
1096 | out_free_bd: | |
1097 | fep->ops->free_bd(ndev); | |
1098 | out_cleanup_data: | |
1099 | fep->ops->cleanup_data(ndev); | |
1100 | out_free_dev: | |
1101 | free_netdev(ndev); | |
1102 | dev_set_drvdata(&ofdev->dev, NULL); | |
e8f7f43a | 1103 | out_put: |
aa73832c | 1104 | of_node_put(fpi->phy_node); |
976de6a8 SW |
1105 | out_free_fpi: |
1106 | kfree(fpi); | |
1107 | return ret; | |
1108 | } | |
1109 | ||
2dc11581 | 1110 | static int fs_enet_remove(struct platform_device *ofdev) |
976de6a8 SW |
1111 | { |
1112 | struct net_device *ndev = dev_get_drvdata(&ofdev->dev); | |
1113 | struct fs_enet_private *fep = netdev_priv(ndev); | |
1114 | ||
1115 | unregister_netdev(ndev); | |
1116 | ||
1117 | fep->ops->free_bd(ndev); | |
1118 | fep->ops->cleanup_data(ndev); | |
1119 | dev_set_drvdata(fep->dev, NULL); | |
aa73832c | 1120 | of_node_put(fep->fpi->phy_node); |
976de6a8 SW |
1121 | free_netdev(ndev); |
1122 | return 0; | |
1123 | } | |
1124 | ||
1125 | static struct of_device_id fs_enet_match[] = { | |
1126 | #ifdef CONFIG_FS_ENET_HAS_SCC | |
1127 | { | |
1128 | .compatible = "fsl,cpm1-scc-enet", | |
1129 | .data = (void *)&fs_scc_ops, | |
1130 | }, | |
f4f62301 HS |
1131 | { |
1132 | .compatible = "fsl,cpm2-scc-enet", | |
1133 | .data = (void *)&fs_scc_ops, | |
1134 | }, | |
976de6a8 SW |
1135 | #endif |
1136 | #ifdef CONFIG_FS_ENET_HAS_FCC | |
1137 | { | |
1138 | .compatible = "fsl,cpm2-fcc-enet", | |
1139 | .data = (void *)&fs_fcc_ops, | |
1140 | }, | |
1141 | #endif | |
1142 | #ifdef CONFIG_FS_ENET_HAS_FEC | |
60ab4361 AG |
1143 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
1144 | { | |
1145 | .compatible = "fsl,mpc5121-fec", | |
1146 | .data = (void *)&fs_fec_ops, | |
1147 | }, | |
1148 | #else | |
976de6a8 SW |
1149 | { |
1150 | .compatible = "fsl,pq1-fec-enet", | |
1151 | .data = (void *)&fs_fec_ops, | |
1152 | }, | |
60ab4361 | 1153 | #endif |
976de6a8 SW |
1154 | #endif |
1155 | {} | |
1156 | }; | |
e72701ac | 1157 | MODULE_DEVICE_TABLE(of, fs_enet_match); |
976de6a8 SW |
1158 | |
1159 | static struct of_platform_driver fs_enet_driver = { | |
4018294b GL |
1160 | .driver = { |
1161 | .owner = THIS_MODULE, | |
1162 | .name = "fs_enet", | |
1163 | .of_match_table = fs_enet_match, | |
1164 | }, | |
976de6a8 SW |
1165 | .probe = fs_enet_probe, |
1166 | .remove = fs_enet_remove, | |
1167 | }; | |
1168 | ||
1169 | static int __init fs_init(void) | |
1170 | { | |
1d58ea30 | 1171 | return of_register_platform_driver(&fs_enet_driver); |
976de6a8 SW |
1172 | } |
1173 | ||
1174 | static void __exit fs_cleanup(void) | |
1175 | { | |
1176 | of_unregister_platform_driver(&fs_enet_driver); | |
976de6a8 | 1177 | } |
48257c4f | 1178 | |
9b8ee8e7 VB |
1179 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1180 | static void fs_enet_netpoll(struct net_device *dev) | |
1181 | { | |
1182 | disable_irq(dev->irq); | |
7385d595 | 1183 | fs_enet_interrupt(dev->irq, dev); |
9b8ee8e7 VB |
1184 | enable_irq(dev->irq); |
1185 | } | |
1186 | #endif | |
1187 | ||
48257c4f PA |
1188 | /**************************************************************************************/ |
1189 | ||
1190 | module_init(fs_init); | |
1191 | module_exit(fs_cleanup); |