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/delay.h> |
28 | #include <linux/netdevice.h> | |
29 | #include <linux/etherdevice.h> | |
30 | #include <linux/skbuff.h> | |
31 | #include <linux/spinlock.h> | |
32 | #include <linux/mii.h> | |
33 | #include <linux/ethtool.h> | |
34 | #include <linux/bitops.h> | |
35 | #include <linux/fs.h> | |
f7b99969 | 36 | #include <linux/platform_device.h> |
5b4b8454 | 37 | #include <linux/phy.h> |
aa73832c GL |
38 | #include <linux/of.h> |
39 | #include <linux/of_mdio.h> | |
b219108c | 40 | #include <linux/of_platform.h> |
8725f25a | 41 | #include <linux/of_gpio.h> |
4b6ba8aa | 42 | #include <linux/of_net.h> |
48257c4f PA |
43 | |
44 | #include <linux/vmalloc.h> | |
48257c4f PA |
45 | #include <asm/pgtable.h> |
46 | #include <asm/irq.h> | |
47 | #include <asm/uaccess.h> | |
48 | ||
49 | #include "fs_enet.h" | |
50 | ||
51 | /*************************************************/ | |
52 | ||
48257c4f PA |
53 | MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>"); |
54 | MODULE_DESCRIPTION("Freescale Ethernet Driver"); | |
55 | MODULE_LICENSE("GPL"); | |
56 | MODULE_VERSION(DRV_MODULE_VERSION); | |
57 | ||
31a5bb04 | 58 | static int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */ |
8d3b33f6 | 59 | module_param(fs_enet_debug, int, 0); |
48257c4f PA |
60 | MODULE_PARM_DESC(fs_enet_debug, |
61 | "Freescale bitmapped debugging message enable value"); | |
62 | ||
8572763a CL |
63 | #define RX_RING_SIZE 32 |
64 | #define TX_RING_SIZE 64 | |
65 | ||
9b8ee8e7 VB |
66 | #ifdef CONFIG_NET_POLL_CONTROLLER |
67 | static void fs_enet_netpoll(struct net_device *dev); | |
68 | #endif | |
48257c4f PA |
69 | |
70 | static void fs_set_multicast_list(struct net_device *dev) | |
71 | { | |
72 | struct fs_enet_private *fep = netdev_priv(dev); | |
73 | ||
74 | (*fep->ops->set_multicast_list)(dev); | |
75 | } | |
76 | ||
0d0d9c15 SW |
77 | static void skb_align(struct sk_buff *skb, int align) |
78 | { | |
79 | int off = ((unsigned long)skb->data) & (align - 1); | |
80 | ||
81 | if (off) | |
82 | skb_reserve(skb, align - off); | |
83 | } | |
84 | ||
8572763a CL |
85 | /* NAPI function */ |
86 | static int fs_enet_napi(struct napi_struct *napi, int budget) | |
48257c4f | 87 | { |
bea3348e | 88 | struct fs_enet_private *fep = container_of(napi, struct fs_enet_private, napi); |
f860f49e | 89 | struct net_device *dev = fep->ndev; |
48257c4f | 90 | const struct fs_platform_info *fpi = fep->fpi; |
31a5bb04 | 91 | cbd_t __iomem *bdp; |
d0cc1147 | 92 | struct sk_buff *skb, *skbn; |
48257c4f PA |
93 | int received = 0; |
94 | u16 pkt_len, sc; | |
95 | int curidx; | |
8572763a CL |
96 | int dirtyidx, do_wake, do_restart; |
97 | int tx_left = TX_RING_SIZE; | |
48257c4f | 98 | |
8572763a CL |
99 | spin_lock(&fep->tx_lock); |
100 | bdp = fep->dirty_tx; | |
101 | ||
102 | /* clear status bits for napi*/ | |
103 | (*fep->ops->napi_clear_event)(dev); | |
104 | ||
105 | do_wake = do_restart = 0; | |
106 | while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0 && tx_left) { | |
107 | dirtyidx = bdp - fep->tx_bd_base; | |
108 | ||
109 | if (fep->tx_free == fep->tx_ring) | |
110 | break; | |
111 | ||
112 | skb = fep->tx_skbuff[dirtyidx]; | |
113 | ||
114 | /* | |
115 | * Check for errors. | |
116 | */ | |
117 | if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | | |
118 | BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) { | |
119 | ||
120 | if (sc & BD_ENET_TX_HB) /* No heartbeat */ | |
121 | fep->stats.tx_heartbeat_errors++; | |
122 | if (sc & BD_ENET_TX_LC) /* Late collision */ | |
123 | fep->stats.tx_window_errors++; | |
124 | if (sc & BD_ENET_TX_RL) /* Retrans limit */ | |
125 | fep->stats.tx_aborted_errors++; | |
126 | if (sc & BD_ENET_TX_UN) /* Underrun */ | |
127 | fep->stats.tx_fifo_errors++; | |
128 | if (sc & BD_ENET_TX_CSL) /* Carrier lost */ | |
129 | fep->stats.tx_carrier_errors++; | |
130 | ||
131 | if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) { | |
132 | fep->stats.tx_errors++; | |
133 | do_restart = 1; | |
134 | } | |
135 | } else | |
136 | fep->stats.tx_packets++; | |
137 | ||
138 | if (sc & BD_ENET_TX_READY) { | |
139 | dev_warn(fep->dev, | |
140 | "HEY! Enet xmit interrupt and TX_READY.\n"); | |
141 | } | |
142 | ||
143 | /* | |
144 | * Deferred means some collisions occurred during transmit, | |
145 | * but we eventually sent the packet OK. | |
146 | */ | |
147 | if (sc & BD_ENET_TX_DEF) | |
148 | fep->stats.collisions++; | |
149 | ||
150 | /* unmap */ | |
151 | if (fep->mapped_as_page[dirtyidx]) | |
152 | dma_unmap_page(fep->dev, CBDR_BUFADDR(bdp), | |
153 | CBDR_DATLEN(bdp), DMA_TO_DEVICE); | |
154 | else | |
155 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), | |
156 | CBDR_DATLEN(bdp), DMA_TO_DEVICE); | |
157 | ||
158 | /* | |
159 | * Free the sk buffer associated with this last transmit. | |
160 | */ | |
161 | if (skb) { | |
162 | dev_kfree_skb(skb); | |
163 | fep->tx_skbuff[dirtyidx] = NULL; | |
164 | } | |
165 | ||
166 | /* | |
167 | * Update pointer to next buffer descriptor to be transmitted. | |
168 | */ | |
169 | if ((sc & BD_ENET_TX_WRAP) == 0) | |
170 | bdp++; | |
171 | else | |
172 | bdp = fep->tx_bd_base; | |
173 | ||
174 | /* | |
175 | * Since we have freed up a buffer, the ring is no longer | |
176 | * full. | |
177 | */ | |
178 | if (++fep->tx_free == MAX_SKB_FRAGS) | |
179 | do_wake = 1; | |
180 | tx_left--; | |
181 | } | |
182 | ||
183 | fep->dirty_tx = bdp; | |
184 | ||
185 | if (do_restart) | |
186 | (*fep->ops->tx_restart)(dev); | |
187 | ||
188 | spin_unlock(&fep->tx_lock); | |
189 | ||
190 | if (do_wake) | |
191 | netif_wake_queue(dev); | |
9b2c0571 | 192 | |
48257c4f PA |
193 | /* |
194 | * First, grab all of the stats for the incoming packet. | |
195 | * These get messed up if we get called due to a busy condition. | |
196 | */ | |
197 | bdp = fep->cur_rx; | |
198 | ||
8572763a CL |
199 | while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0 && |
200 | received < budget) { | |
48257c4f PA |
201 | curidx = bdp - fep->rx_bd_base; |
202 | ||
203 | /* | |
204 | * Since we have allocated space to hold a complete frame, | |
205 | * the last indicator should be set. | |
206 | */ | |
207 | if ((sc & BD_ENET_RX_LAST) == 0) | |
fcb6a1c8 | 208 | dev_warn(fep->dev, "rcv is not +last\n"); |
48257c4f PA |
209 | |
210 | /* | |
9b8ee8e7 | 211 | * Check for errors. |
48257c4f PA |
212 | */ |
213 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | | |
214 | BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { | |
215 | fep->stats.rx_errors++; | |
216 | /* Frame too long or too short. */ | |
217 | if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) | |
218 | fep->stats.rx_length_errors++; | |
219 | /* Frame alignment */ | |
220 | if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) | |
221 | fep->stats.rx_frame_errors++; | |
222 | /* CRC Error */ | |
223 | if (sc & BD_ENET_RX_CR) | |
224 | fep->stats.rx_crc_errors++; | |
225 | /* FIFO overrun */ | |
226 | if (sc & BD_ENET_RX_OV) | |
227 | fep->stats.rx_crc_errors++; | |
228 | ||
070e1f01 | 229 | skbn = fep->rx_skbuff[curidx]; |
48257c4f | 230 | } else { |
48257c4f PA |
231 | skb = fep->rx_skbuff[curidx]; |
232 | ||
48257c4f PA |
233 | /* |
234 | * Process the incoming frame. | |
235 | */ | |
236 | fep->stats.rx_packets++; | |
237 | pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ | |
238 | fep->stats.rx_bytes += pkt_len + 4; | |
239 | ||
240 | if (pkt_len <= fpi->rx_copybreak) { | |
241 | /* +2 to make IP header L1 cache aligned */ | |
21a4e469 | 242 | skbn = netdev_alloc_skb(dev, pkt_len + 2); |
48257c4f PA |
243 | if (skbn != NULL) { |
244 | skb_reserve(skbn, 2); /* align IP header */ | |
d626f62b ACM |
245 | skb_copy_from_linear_data(skb, |
246 | skbn->data, pkt_len); | |
d0cc1147 | 247 | swap(skb, skbn); |
070e1f01 CL |
248 | dma_sync_single_for_cpu(fep->dev, |
249 | CBDR_BUFADDR(bdp), | |
250 | L1_CACHE_ALIGN(pkt_len), | |
251 | DMA_FROM_DEVICE); | |
48257c4f | 252 | } |
0d0d9c15 | 253 | } else { |
21a4e469 | 254 | skbn = netdev_alloc_skb(dev, ENET_RX_FRSIZE); |
48257c4f | 255 | |
070e1f01 CL |
256 | if (skbn) { |
257 | dma_addr_t dma; | |
258 | ||
0d0d9c15 | 259 | skb_align(skbn, ENET_RX_ALIGN); |
070e1f01 CL |
260 | |
261 | dma_unmap_single(fep->dev, | |
262 | CBDR_BUFADDR(bdp), | |
263 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
264 | DMA_FROM_DEVICE); | |
265 | ||
266 | dma = dma_map_single(fep->dev, | |
267 | skbn->data, | |
268 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
269 | DMA_FROM_DEVICE); | |
270 | CBDW_BUFADDR(bdp, dma); | |
271 | } | |
0d0d9c15 SW |
272 | } |
273 | ||
48257c4f | 274 | if (skbn != NULL) { |
48257c4f PA |
275 | skb_put(skb, pkt_len); /* Make room */ |
276 | skb->protocol = eth_type_trans(skb, dev); | |
277 | received++; | |
278 | netif_receive_skb(skb); | |
279 | } else { | |
48257c4f PA |
280 | fep->stats.rx_dropped++; |
281 | skbn = skb; | |
282 | } | |
283 | } | |
284 | ||
285 | fep->rx_skbuff[curidx] = skbn; | |
48257c4f PA |
286 | CBDW_DATLEN(bdp, 0); |
287 | CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); | |
288 | ||
289 | /* | |
9b8ee8e7 | 290 | * Update BD pointer to next entry. |
48257c4f PA |
291 | */ |
292 | if ((sc & BD_ENET_RX_WRAP) == 0) | |
293 | bdp++; | |
294 | else | |
295 | bdp = fep->rx_bd_base; | |
296 | ||
297 | (*fep->ops->rx_bd_done)(dev); | |
298 | } | |
299 | ||
300 | fep->cur_rx = bdp; | |
301 | ||
8572763a | 302 | if (received < budget && tx_left) { |
bea3348e | 303 | /* done */ |
288379f0 | 304 | napi_complete(napi); |
8572763a | 305 | (*fep->ops->napi_enable)(dev); |
48257c4f | 306 | |
8572763a | 307 | return received; |
d43a396a LC |
308 | } |
309 | ||
8572763a | 310 | return budget; |
48257c4f PA |
311 | } |
312 | ||
313 | /* | |
314 | * The interrupt handler. | |
315 | * This is called from the MPC core interrupt. | |
316 | */ | |
317 | static irqreturn_t | |
7d12e780 | 318 | fs_enet_interrupt(int irq, void *dev_id) |
48257c4f PA |
319 | { |
320 | struct net_device *dev = dev_id; | |
321 | struct fs_enet_private *fep; | |
322 | const struct fs_platform_info *fpi; | |
323 | u32 int_events; | |
324 | u32 int_clr_events; | |
325 | int nr, napi_ok; | |
326 | int handled; | |
327 | ||
328 | fep = netdev_priv(dev); | |
329 | fpi = fep->fpi; | |
330 | ||
331 | nr = 0; | |
332 | while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) { | |
48257c4f PA |
333 | nr++; |
334 | ||
335 | int_clr_events = int_events; | |
8572763a | 336 | int_clr_events &= ~fep->ev_napi; |
48257c4f PA |
337 | |
338 | (*fep->ops->clear_int_events)(dev, int_clr_events); | |
339 | ||
340 | if (int_events & fep->ev_err) | |
341 | (*fep->ops->ev_error)(dev, int_events); | |
342 | ||
8572763a | 343 | if (int_events & fep->ev) { |
583d4a68 LC |
344 | napi_ok = napi_schedule_prep(&fep->napi); |
345 | ||
8572763a CL |
346 | (*fep->ops->napi_disable)(dev); |
347 | (*fep->ops->clear_int_events)(dev, fep->ev_napi); | |
583d4a68 LC |
348 | |
349 | /* NOTE: it is possible for FCCs in NAPI mode */ | |
350 | /* to submit a spurious interrupt while in poll */ | |
351 | if (napi_ok) | |
352 | __napi_schedule(&fep->napi); | |
48257c4f PA |
353 | } |
354 | ||
48257c4f PA |
355 | } |
356 | ||
357 | handled = nr > 0; | |
358 | return IRQ_RETVAL(handled); | |
359 | } | |
360 | ||
361 | void fs_init_bds(struct net_device *dev) | |
362 | { | |
363 | struct fs_enet_private *fep = netdev_priv(dev); | |
31a5bb04 | 364 | cbd_t __iomem *bdp; |
48257c4f PA |
365 | struct sk_buff *skb; |
366 | int i; | |
367 | ||
368 | fs_cleanup_bds(dev); | |
369 | ||
370 | fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; | |
371 | fep->tx_free = fep->tx_ring; | |
372 | fep->cur_rx = fep->rx_bd_base; | |
373 | ||
374 | /* | |
9b8ee8e7 | 375 | * Initialize the receive buffer descriptors. |
48257c4f PA |
376 | */ |
377 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { | |
21a4e469 | 378 | skb = netdev_alloc_skb(dev, ENET_RX_FRSIZE); |
720a43ef | 379 | if (skb == NULL) |
48257c4f | 380 | break; |
720a43ef | 381 | |
0d0d9c15 | 382 | skb_align(skb, ENET_RX_ALIGN); |
48257c4f | 383 | fep->rx_skbuff[i] = skb; |
48257c4f PA |
384 | CBDW_BUFADDR(bdp, |
385 | dma_map_single(fep->dev, skb->data, | |
386 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), | |
387 | DMA_FROM_DEVICE)); | |
388 | CBDW_DATLEN(bdp, 0); /* zero */ | |
389 | CBDW_SC(bdp, BD_ENET_RX_EMPTY | | |
390 | ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP)); | |
391 | } | |
392 | /* | |
9b8ee8e7 | 393 | * if we failed, fillup remainder |
48257c4f PA |
394 | */ |
395 | for (; i < fep->rx_ring; i++, bdp++) { | |
396 | fep->rx_skbuff[i] = NULL; | |
397 | CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP); | |
398 | } | |
399 | ||
400 | /* | |
9b8ee8e7 | 401 | * ...and the same for transmit. |
48257c4f PA |
402 | */ |
403 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { | |
404 | fep->tx_skbuff[i] = NULL; | |
405 | CBDW_BUFADDR(bdp, 0); | |
406 | CBDW_DATLEN(bdp, 0); | |
407 | CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP); | |
408 | } | |
409 | } | |
410 | ||
411 | void fs_cleanup_bds(struct net_device *dev) | |
412 | { | |
413 | struct fs_enet_private *fep = netdev_priv(dev); | |
414 | struct sk_buff *skb; | |
31a5bb04 | 415 | cbd_t __iomem *bdp; |
48257c4f PA |
416 | int i; |
417 | ||
418 | /* | |
9b8ee8e7 | 419 | * Reset SKB transmit buffers. |
48257c4f | 420 | */ |
34e30d61 | 421 | for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { |
48257c4f PA |
422 | if ((skb = fep->tx_skbuff[i]) == NULL) |
423 | continue; | |
424 | ||
425 | /* unmap */ | |
34e30d61 PA |
426 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
427 | skb->len, DMA_TO_DEVICE); | |
48257c4f PA |
428 | |
429 | fep->tx_skbuff[i] = NULL; | |
430 | dev_kfree_skb(skb); | |
431 | } | |
432 | ||
433 | /* | |
9b8ee8e7 | 434 | * Reset SKB receive buffers |
48257c4f | 435 | */ |
34e30d61 | 436 | for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { |
48257c4f PA |
437 | if ((skb = fep->rx_skbuff[i]) == NULL) |
438 | continue; | |
439 | ||
440 | /* unmap */ | |
34e30d61 | 441 | dma_unmap_single(fep->dev, CBDR_BUFADDR(bdp), |
48257c4f PA |
442 | L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), |
443 | DMA_FROM_DEVICE); | |
444 | ||
445 | fep->rx_skbuff[i] = NULL; | |
446 | ||
447 | dev_kfree_skb(skb); | |
448 | } | |
449 | } | |
450 | ||
451 | /**********************************************************************************/ | |
452 | ||
cb395eaf AG |
453 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
454 | /* | |
455 | * MPC5121 FEC requeries 4-byte alignment for TX data buffer! | |
456 | */ | |
457 | static struct sk_buff *tx_skb_align_workaround(struct net_device *dev, | |
458 | struct sk_buff *skb) | |
459 | { | |
460 | struct sk_buff *new_skb; | |
cb395eaf | 461 | |
26c0a14f AP |
462 | if (skb_linearize(skb)) |
463 | return NULL; | |
464 | ||
cb395eaf | 465 | /* Alloc new skb */ |
21a4e469 | 466 | new_skb = netdev_alloc_skb(dev, skb->len + 4); |
720a43ef | 467 | if (!new_skb) |
cb395eaf | 468 | return NULL; |
cb395eaf AG |
469 | |
470 | /* Make sure new skb is properly aligned */ | |
471 | skb_align(new_skb, 4); | |
472 | ||
473 | /* Copy data to new skb ... */ | |
474 | skb_copy_from_linear_data(skb, new_skb->data, skb->len); | |
475 | skb_put(new_skb, skb->len); | |
476 | ||
477 | /* ... and free an old one */ | |
478 | dev_kfree_skb_any(skb); | |
479 | ||
480 | return new_skb; | |
481 | } | |
482 | #endif | |
483 | ||
48257c4f PA |
484 | static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) |
485 | { | |
486 | struct fs_enet_private *fep = netdev_priv(dev); | |
31a5bb04 | 487 | cbd_t __iomem *bdp; |
48257c4f PA |
488 | int curidx; |
489 | u16 sc; | |
26c0a14f | 490 | int nr_frags; |
4fc9b87b LC |
491 | skb_frag_t *frag; |
492 | int len; | |
cb395eaf | 493 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
26c0a14f AP |
494 | int is_aligned = 1; |
495 | int i; | |
496 | ||
497 | if (!IS_ALIGNED((unsigned long)skb->data, 4)) { | |
498 | is_aligned = 0; | |
499 | } else { | |
500 | nr_frags = skb_shinfo(skb)->nr_frags; | |
501 | frag = skb_shinfo(skb)->frags; | |
502 | for (i = 0; i < nr_frags; i++, frag++) { | |
503 | if (!IS_ALIGNED(frag->page_offset, 4)) { | |
504 | is_aligned = 0; | |
505 | break; | |
506 | } | |
507 | } | |
508 | } | |
509 | ||
510 | if (!is_aligned) { | |
cb395eaf AG |
511 | skb = tx_skb_align_workaround(dev, skb); |
512 | if (!skb) { | |
513 | /* | |
514 | * We have lost packet due to memory allocation error | |
515 | * in tx_skb_align_workaround(). Hopefully original | |
516 | * skb is still valid, so try transmit it later. | |
517 | */ | |
518 | return NETDEV_TX_BUSY; | |
519 | } | |
520 | } | |
521 | #endif | |
26c0a14f | 522 | |
d43a396a | 523 | spin_lock(&fep->tx_lock); |
48257c4f PA |
524 | |
525 | /* | |
9b8ee8e7 | 526 | * Fill in a Tx ring entry |
48257c4f PA |
527 | */ |
528 | bdp = fep->cur_tx; | |
529 | ||
26c0a14f | 530 | nr_frags = skb_shinfo(skb)->nr_frags; |
4fc9b87b | 531 | if (fep->tx_free <= nr_frags || (CBDR_SC(bdp) & BD_ENET_TX_READY)) { |
48257c4f | 532 | netif_stop_queue(dev); |
d43a396a | 533 | spin_unlock(&fep->tx_lock); |
48257c4f PA |
534 | |
535 | /* | |
536 | * Ooops. All transmit buffers are full. Bail out. | |
537 | * This should not happen, since the tx queue should be stopped. | |
538 | */ | |
fcb6a1c8 | 539 | dev_warn(fep->dev, "tx queue full!.\n"); |
48257c4f PA |
540 | return NETDEV_TX_BUSY; |
541 | } | |
542 | ||
543 | curidx = bdp - fep->tx_bd_base; | |
48257c4f | 544 | |
4fc9b87b LC |
545 | len = skb->len; |
546 | fep->stats.tx_bytes += len; | |
547 | if (nr_frags) | |
548 | len -= skb->data_len; | |
549 | fep->tx_free -= nr_frags + 1; | |
48257c4f | 550 | /* |
9b8ee8e7 | 551 | * Push the data cache so the CPM does not get stale memory data. |
48257c4f PA |
552 | */ |
553 | CBDW_BUFADDR(bdp, dma_map_single(fep->dev, | |
4fc9b87b LC |
554 | skb->data, len, DMA_TO_DEVICE)); |
555 | CBDW_DATLEN(bdp, len); | |
556 | ||
557 | fep->mapped_as_page[curidx] = 0; | |
558 | frag = skb_shinfo(skb)->frags; | |
559 | while (nr_frags) { | |
560 | CBDC_SC(bdp, | |
8961822c LC |
561 | BD_ENET_TX_STATS | BD_ENET_TX_INTR | BD_ENET_TX_LAST | |
562 | BD_ENET_TX_TC); | |
4fc9b87b LC |
563 | CBDS_SC(bdp, BD_ENET_TX_READY); |
564 | ||
565 | if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) | |
566 | bdp++, curidx++; | |
567 | else | |
568 | bdp = fep->tx_bd_base, curidx = 0; | |
48257c4f | 569 | |
4fc9b87b LC |
570 | len = skb_frag_size(frag); |
571 | CBDW_BUFADDR(bdp, skb_frag_dma_map(fep->dev, frag, 0, len, | |
572 | DMA_TO_DEVICE)); | |
573 | CBDW_DATLEN(bdp, len); | |
48257c4f | 574 | |
4fc9b87b LC |
575 | fep->tx_skbuff[curidx] = NULL; |
576 | fep->mapped_as_page[curidx] = 1; | |
577 | ||
578 | frag++; | |
579 | nr_frags--; | |
580 | } | |
48257c4f PA |
581 | |
582 | /* Trigger transmission start */ | |
583 | sc = BD_ENET_TX_READY | BD_ENET_TX_INTR | | |
584 | BD_ENET_TX_LAST | BD_ENET_TX_TC; | |
585 | ||
586 | /* note that while FEC does not have this bit | |
587 | * it marks it as available for software use | |
588 | * yay for hw reuse :) */ | |
589 | if (skb->len <= 60) | |
590 | sc |= BD_ENET_TX_PAD; | |
4fc9b87b | 591 | CBDC_SC(bdp, BD_ENET_TX_STATS); |
48257c4f PA |
592 | CBDS_SC(bdp, sc); |
593 | ||
4fc9b87b LC |
594 | /* Save skb pointer. */ |
595 | fep->tx_skbuff[curidx] = skb; | |
596 | ||
597 | /* If this was the last BD in the ring, start at the beginning again. */ | |
598 | if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) | |
599 | bdp++; | |
600 | else | |
601 | bdp = fep->tx_bd_base; | |
602 | fep->cur_tx = bdp; | |
603 | ||
604 | if (fep->tx_free < MAX_SKB_FRAGS) | |
605 | netif_stop_queue(dev); | |
606 | ||
e3097211 RC |
607 | skb_tx_timestamp(skb); |
608 | ||
48257c4f PA |
609 | (*fep->ops->tx_kickstart)(dev); |
610 | ||
d43a396a | 611 | spin_unlock(&fep->tx_lock); |
48257c4f PA |
612 | |
613 | return NETDEV_TX_OK; | |
614 | } | |
615 | ||
48257c4f PA |
616 | static void fs_timeout(struct net_device *dev) |
617 | { | |
618 | struct fs_enet_private *fep = netdev_priv(dev); | |
619 | unsigned long flags; | |
620 | int wake = 0; | |
621 | ||
622 | fep->stats.tx_errors++; | |
623 | ||
624 | spin_lock_irqsave(&fep->lock, flags); | |
625 | ||
626 | if (dev->flags & IFF_UP) { | |
c1c511a2 | 627 | phy_stop(dev->phydev); |
48257c4f PA |
628 | (*fep->ops->stop)(dev); |
629 | (*fep->ops->restart)(dev); | |
c1c511a2 | 630 | phy_start(dev->phydev); |
48257c4f PA |
631 | } |
632 | ||
c1c511a2 | 633 | phy_start(dev->phydev); |
8572763a CL |
634 | wake = fep->tx_free >= MAX_SKB_FRAGS && |
635 | !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY); | |
48257c4f PA |
636 | spin_unlock_irqrestore(&fep->lock, flags); |
637 | ||
638 | if (wake) | |
639 | netif_wake_queue(dev); | |
640 | } | |
641 | ||
5b4b8454 VB |
642 | /*----------------------------------------------------------------------------- |
643 | * generic link-change handler - should be sufficient for most cases | |
644 | *-----------------------------------------------------------------------------*/ | |
645 | static void generic_adjust_link(struct net_device *dev) | |
646 | { | |
0fb300fa | 647 | struct fs_enet_private *fep = netdev_priv(dev); |
c1c511a2 | 648 | struct phy_device *phydev = dev->phydev; |
0fb300fa SW |
649 | int new_state = 0; |
650 | ||
651 | if (phydev->link) { | |
652 | /* adjust to duplex mode */ | |
653 | if (phydev->duplex != fep->oldduplex) { | |
654 | new_state = 1; | |
655 | fep->oldduplex = phydev->duplex; | |
656 | } | |
657 | ||
658 | if (phydev->speed != fep->oldspeed) { | |
659 | new_state = 1; | |
660 | fep->oldspeed = phydev->speed; | |
661 | } | |
662 | ||
663 | if (!fep->oldlink) { | |
664 | new_state = 1; | |
665 | fep->oldlink = 1; | |
0fb300fa SW |
666 | } |
667 | ||
668 | if (new_state) | |
669 | fep->ops->restart(dev); | |
670 | } else if (fep->oldlink) { | |
671 | new_state = 1; | |
672 | fep->oldlink = 0; | |
673 | fep->oldspeed = 0; | |
674 | fep->oldduplex = -1; | |
0fb300fa SW |
675 | } |
676 | ||
677 | if (new_state && netif_msg_link(fep)) | |
678 | phy_print_status(phydev); | |
5b4b8454 VB |
679 | } |
680 | ||
681 | ||
682 | static void fs_adjust_link(struct net_device *dev) | |
683 | { | |
684 | struct fs_enet_private *fep = netdev_priv(dev); | |
685 | unsigned long flags; | |
686 | ||
687 | spin_lock_irqsave(&fep->lock, flags); | |
688 | ||
689 | if(fep->ops->adjust_link) | |
690 | fep->ops->adjust_link(dev); | |
691 | else | |
692 | generic_adjust_link(dev); | |
693 | ||
694 | spin_unlock_irqrestore(&fep->lock, flags); | |
695 | } | |
696 | ||
697 | static int fs_init_phy(struct net_device *dev) | |
698 | { | |
699 | struct fs_enet_private *fep = netdev_priv(dev); | |
700 | struct phy_device *phydev; | |
ba568335 | 701 | phy_interface_t iface; |
5b4b8454 VB |
702 | |
703 | fep->oldlink = 0; | |
704 | fep->oldspeed = 0; | |
705 | fep->oldduplex = -1; | |
eedbc705 | 706 | |
ba568335 VE |
707 | iface = fep->fpi->use_rmii ? |
708 | PHY_INTERFACE_MODE_RMII : PHY_INTERFACE_MODE_MII; | |
709 | ||
eedbc705 | 710 | phydev = of_phy_connect(dev, fep->fpi->phy_node, &fs_adjust_link, 0, |
ba568335 | 711 | iface); |
eedbc705 AV |
712 | if (!phydev) { |
713 | dev_err(&dev->dev, "Could not attach to PHY\n"); | |
714 | return -ENODEV; | |
5b4b8454 VB |
715 | } |
716 | ||
5b4b8454 VB |
717 | return 0; |
718 | } | |
719 | ||
48257c4f PA |
720 | static int fs_enet_open(struct net_device *dev) |
721 | { | |
722 | struct fs_enet_private *fep = netdev_priv(dev); | |
48257c4f | 723 | int r; |
5b4b8454 | 724 | int err; |
48257c4f | 725 | |
f4f62301 | 726 | /* to initialize the fep->cur_rx,... */ |
8572763a | 727 | /* not doing this, will cause a crash in fs_enet_napi */ |
f4f62301 HS |
728 | fs_init_bds(fep->ndev); |
729 | ||
583d4a68 | 730 | napi_enable(&fep->napi); |
bea3348e | 731 | |
48257c4f | 732 | /* Install our interrupt handler. */ |
31578140 KG |
733 | r = request_irq(fep->interrupt, fs_enet_interrupt, IRQF_SHARED, |
734 | "fs_enet-mac", dev); | |
48257c4f | 735 | if (r != 0) { |
fcb6a1c8 | 736 | dev_err(fep->dev, "Could not allocate FS_ENET IRQ!"); |
583d4a68 | 737 | napi_disable(&fep->napi); |
48257c4f PA |
738 | return -EINVAL; |
739 | } | |
740 | ||
5b4b8454 | 741 | err = fs_init_phy(dev); |
f860f49e | 742 | if (err) { |
d7e094d4 | 743 | free_irq(fep->interrupt, dev); |
583d4a68 | 744 | napi_disable(&fep->napi); |
5b4b8454 | 745 | return err; |
bea3348e | 746 | } |
c1c511a2 | 747 | phy_start(dev->phydev); |
48257c4f | 748 | |
c8f15686 AV |
749 | netif_start_queue(dev); |
750 | ||
48257c4f PA |
751 | return 0; |
752 | } | |
753 | ||
754 | static int fs_enet_close(struct net_device *dev) | |
755 | { | |
756 | struct fs_enet_private *fep = netdev_priv(dev); | |
48257c4f PA |
757 | unsigned long flags; |
758 | ||
759 | netif_stop_queue(dev); | |
760 | netif_carrier_off(dev); | |
583d4a68 | 761 | napi_disable(&fep->napi); |
c1c511a2 | 762 | phy_stop(dev->phydev); |
48257c4f PA |
763 | |
764 | spin_lock_irqsave(&fep->lock, flags); | |
aa90f503 | 765 | spin_lock(&fep->tx_lock); |
48257c4f | 766 | (*fep->ops->stop)(dev); |
aa90f503 | 767 | spin_unlock(&fep->tx_lock); |
48257c4f PA |
768 | spin_unlock_irqrestore(&fep->lock, flags); |
769 | ||
770 | /* release any irqs */ | |
c1c511a2 | 771 | phy_disconnect(dev->phydev); |
31578140 | 772 | free_irq(fep->interrupt, dev); |
48257c4f PA |
773 | |
774 | return 0; | |
775 | } | |
776 | ||
777 | static struct net_device_stats *fs_enet_get_stats(struct net_device *dev) | |
778 | { | |
779 | struct fs_enet_private *fep = netdev_priv(dev); | |
780 | return &fep->stats; | |
781 | } | |
782 | ||
783 | /*************************************************************************/ | |
784 | ||
785 | static void fs_get_drvinfo(struct net_device *dev, | |
786 | struct ethtool_drvinfo *info) | |
787 | { | |
7826d43f JP |
788 | strlcpy(info->driver, DRV_MODULE_NAME, sizeof(info->driver)); |
789 | strlcpy(info->version, DRV_MODULE_VERSION, sizeof(info->version)); | |
48257c4f PA |
790 | } |
791 | ||
792 | static int fs_get_regs_len(struct net_device *dev) | |
793 | { | |
794 | struct fs_enet_private *fep = netdev_priv(dev); | |
795 | ||
796 | return (*fep->ops->get_regs_len)(dev); | |
797 | } | |
798 | ||
799 | static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs, | |
800 | void *p) | |
801 | { | |
802 | struct fs_enet_private *fep = netdev_priv(dev); | |
803 | unsigned long flags; | |
804 | int r, len; | |
805 | ||
806 | len = regs->len; | |
807 | ||
808 | spin_lock_irqsave(&fep->lock, flags); | |
809 | r = (*fep->ops->get_regs)(dev, p, &len); | |
810 | spin_unlock_irqrestore(&fep->lock, flags); | |
811 | ||
812 | if (r == 0) | |
813 | regs->version = 0; | |
814 | } | |
815 | ||
48257c4f PA |
816 | static int fs_nway_reset(struct net_device *dev) |
817 | { | |
5b4b8454 | 818 | return 0; |
48257c4f PA |
819 | } |
820 | ||
821 | static u32 fs_get_msglevel(struct net_device *dev) | |
822 | { | |
823 | struct fs_enet_private *fep = netdev_priv(dev); | |
824 | return fep->msg_enable; | |
825 | } | |
826 | ||
827 | static void fs_set_msglevel(struct net_device *dev, u32 value) | |
828 | { | |
829 | struct fs_enet_private *fep = netdev_priv(dev); | |
830 | fep->msg_enable = value; | |
831 | } | |
832 | ||
b0ba357b CL |
833 | static int fs_get_tunable(struct net_device *dev, |
834 | const struct ethtool_tunable *tuna, void *data) | |
835 | { | |
836 | struct fs_enet_private *fep = netdev_priv(dev); | |
837 | struct fs_platform_info *fpi = fep->fpi; | |
838 | int ret = 0; | |
839 | ||
840 | switch (tuna->id) { | |
841 | case ETHTOOL_RX_COPYBREAK: | |
842 | *(u32 *)data = fpi->rx_copybreak; | |
843 | break; | |
844 | default: | |
845 | ret = -EINVAL; | |
846 | break; | |
847 | } | |
848 | ||
849 | return ret; | |
850 | } | |
851 | ||
852 | static int fs_set_tunable(struct net_device *dev, | |
853 | const struct ethtool_tunable *tuna, const void *data) | |
854 | { | |
855 | struct fs_enet_private *fep = netdev_priv(dev); | |
856 | struct fs_platform_info *fpi = fep->fpi; | |
857 | int ret = 0; | |
858 | ||
859 | switch (tuna->id) { | |
860 | case ETHTOOL_RX_COPYBREAK: | |
861 | fpi->rx_copybreak = *(u32 *)data; | |
862 | break; | |
863 | default: | |
864 | ret = -EINVAL; | |
865 | break; | |
866 | } | |
867 | ||
868 | return ret; | |
869 | } | |
870 | ||
7282d491 | 871 | static const struct ethtool_ops fs_ethtool_ops = { |
48257c4f PA |
872 | .get_drvinfo = fs_get_drvinfo, |
873 | .get_regs_len = fs_get_regs_len, | |
48257c4f PA |
874 | .nway_reset = fs_nway_reset, |
875 | .get_link = ethtool_op_get_link, | |
876 | .get_msglevel = fs_get_msglevel, | |
877 | .set_msglevel = fs_set_msglevel, | |
48257c4f | 878 | .get_regs = fs_get_regs, |
3bf2ca19 | 879 | .get_ts_info = ethtool_op_get_ts_info, |
73d9011c PR |
880 | .get_link_ksettings = phy_ethtool_get_link_ksettings, |
881 | .set_link_ksettings = phy_ethtool_set_link_ksettings, | |
b0ba357b CL |
882 | .get_tunable = fs_get_tunable, |
883 | .set_tunable = fs_set_tunable, | |
48257c4f PA |
884 | }; |
885 | ||
886 | static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
887 | { | |
48257c4f PA |
888 | if (!netif_running(dev)) |
889 | return -EINVAL; | |
890 | ||
c1c511a2 | 891 | return phy_mii_ioctl(dev->phydev, rq, cmd); |
48257c4f PA |
892 | } |
893 | ||
894 | extern int fs_mii_connect(struct net_device *dev); | |
895 | extern void fs_mii_disconnect(struct net_device *dev); | |
896 | ||
48257c4f PA |
897 | /**************************************************************************************/ |
898 | ||
976de6a8 SW |
899 | #ifdef CONFIG_FS_ENET_HAS_FEC |
900 | #define IS_FEC(match) ((match)->data == &fs_fec_ops) | |
901 | #else | |
902 | #define IS_FEC(match) 0 | |
903 | #endif | |
904 | ||
8c02acd7 AB |
905 | static const struct net_device_ops fs_enet_netdev_ops = { |
906 | .ndo_open = fs_enet_open, | |
907 | .ndo_stop = fs_enet_close, | |
908 | .ndo_get_stats = fs_enet_get_stats, | |
909 | .ndo_start_xmit = fs_enet_start_xmit, | |
910 | .ndo_tx_timeout = fs_timeout, | |
afc4b13d | 911 | .ndo_set_rx_mode = fs_set_multicast_list, |
8c02acd7 AB |
912 | .ndo_do_ioctl = fs_ioctl, |
913 | .ndo_validate_addr = eth_validate_addr, | |
914 | .ndo_set_mac_address = eth_mac_addr, | |
915 | .ndo_change_mtu = eth_change_mtu, | |
916 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
917 | .ndo_poll_controller = fs_enet_netpoll, | |
918 | #endif | |
919 | }; | |
920 | ||
94e5a2a8 | 921 | static const struct of_device_id fs_enet_match[]; |
4f2c53ea | 922 | static int fs_enet_probe(struct platform_device *ofdev) |
976de6a8 | 923 | { |
b1608d69 | 924 | const struct of_device_id *match; |
976de6a8 SW |
925 | struct net_device *ndev; |
926 | struct fs_enet_private *fep; | |
927 | struct fs_platform_info *fpi; | |
928 | const u32 *data; | |
2771399a GS |
929 | struct clk *clk; |
930 | int err; | |
976de6a8 | 931 | const u8 *mac_addr; |
ba568335 | 932 | const char *phy_connection_type; |
976de6a8 SW |
933 | int privsize, len, ret = -ENODEV; |
934 | ||
b1608d69 GL |
935 | match = of_match_device(fs_enet_match, &ofdev->dev); |
936 | if (!match) | |
74888760 GL |
937 | return -EINVAL; |
938 | ||
976de6a8 SW |
939 | fpi = kzalloc(sizeof(*fpi), GFP_KERNEL); |
940 | if (!fpi) | |
941 | return -ENOMEM; | |
942 | ||
b1608d69 | 943 | if (!IS_FEC(match)) { |
61c7a080 | 944 | data = of_get_property(ofdev->dev.of_node, "fsl,cpm-command", &len); |
976de6a8 SW |
945 | if (!data || len != 4) |
946 | goto out_free_fpi; | |
947 | ||
948 | fpi->cp_command = *data; | |
949 | } | |
950 | ||
8572763a CL |
951 | fpi->rx_ring = RX_RING_SIZE; |
952 | fpi->tx_ring = TX_RING_SIZE; | |
976de6a8 | 953 | fpi->rx_copybreak = 240; |
976de6a8 | 954 | fpi->napi_weight = 17; |
61c7a080 | 955 | fpi->phy_node = of_parse_phandle(ofdev->dev.of_node, "phy-handle", 0); |
bb74d9a4 FF |
956 | if (!fpi->phy_node && of_phy_is_fixed_link(ofdev->dev.of_node)) { |
957 | err = of_phy_register_fixed_link(ofdev->dev.of_node); | |
958 | if (err) | |
959 | goto out_free_fpi; | |
960 | ||
961 | /* In the case of a fixed PHY, the DT node associated | |
962 | * to the PHY is the Ethernet MAC DT node. | |
963 | */ | |
129cc83a | 964 | fpi->phy_node = of_node_get(ofdev->dev.of_node); |
bb74d9a4 | 965 | } |
976de6a8 | 966 | |
ba568335 VE |
967 | if (of_device_is_compatible(ofdev->dev.of_node, "fsl,mpc5125-fec")) { |
968 | phy_connection_type = of_get_property(ofdev->dev.of_node, | |
969 | "phy-connection-type", NULL); | |
970 | if (phy_connection_type && !strcmp("rmii", phy_connection_type)) | |
971 | fpi->use_rmii = 1; | |
972 | } | |
973 | ||
2771399a GS |
974 | /* make clock lookup non-fatal (the driver is shared among platforms), |
975 | * but require enable to succeed when a clock was specified/found, | |
976 | * keep a reference to the clock upon successful acquisition | |
977 | */ | |
978 | clk = devm_clk_get(&ofdev->dev, "per"); | |
979 | if (!IS_ERR(clk)) { | |
980 | err = clk_prepare_enable(clk); | |
981 | if (err) { | |
982 | ret = err; | |
983 | goto out_free_fpi; | |
984 | } | |
985 | fpi->clk_per = clk; | |
986 | } | |
987 | ||
976de6a8 SW |
988 | privsize = sizeof(*fep) + |
989 | sizeof(struct sk_buff **) * | |
4fc9b87b LC |
990 | (fpi->rx_ring + fpi->tx_ring) + |
991 | sizeof(char) * fpi->tx_ring; | |
976de6a8 SW |
992 | |
993 | ndev = alloc_etherdev(privsize); | |
994 | if (!ndev) { | |
995 | ret = -ENOMEM; | |
e8f7f43a | 996 | goto out_put; |
976de6a8 SW |
997 | } |
998 | ||
eedbc705 | 999 | SET_NETDEV_DEV(ndev, &ofdev->dev); |
8513fbd8 | 1000 | platform_set_drvdata(ofdev, ndev); |
976de6a8 SW |
1001 | |
1002 | fep = netdev_priv(ndev); | |
1003 | fep->dev = &ofdev->dev; | |
f860f49e | 1004 | fep->ndev = ndev; |
976de6a8 | 1005 | fep->fpi = fpi; |
b1608d69 | 1006 | fep->ops = match->data; |
976de6a8 SW |
1007 | |
1008 | ret = fep->ops->setup_data(ndev); | |
1009 | if (ret) | |
1010 | goto out_free_dev; | |
1011 | ||
1012 | fep->rx_skbuff = (struct sk_buff **)&fep[1]; | |
1013 | fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring; | |
4fc9b87b LC |
1014 | fep->mapped_as_page = (char *)(fep->rx_skbuff + fpi->rx_ring + |
1015 | fpi->tx_ring); | |
976de6a8 SW |
1016 | |
1017 | spin_lock_init(&fep->lock); | |
1018 | spin_lock_init(&fep->tx_lock); | |
1019 | ||
61c7a080 | 1020 | mac_addr = of_get_mac_address(ofdev->dev.of_node); |
976de6a8 | 1021 | if (mac_addr) |
d458cdf7 | 1022 | memcpy(ndev->dev_addr, mac_addr, ETH_ALEN); |
976de6a8 SW |
1023 | |
1024 | ret = fep->ops->allocate_bd(ndev); | |
1025 | if (ret) | |
1026 | goto out_cleanup_data; | |
1027 | ||
1028 | fep->rx_bd_base = fep->ring_base; | |
1029 | fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring; | |
1030 | ||
1031 | fep->tx_ring = fpi->tx_ring; | |
1032 | fep->rx_ring = fpi->rx_ring; | |
1033 | ||
8c02acd7 | 1034 | ndev->netdev_ops = &fs_enet_netdev_ops; |
976de6a8 | 1035 | ndev->watchdog_timeo = 2 * HZ; |
8572763a | 1036 | netif_napi_add(ndev, &fep->napi, fs_enet_napi, fpi->napi_weight); |
f860f49e | 1037 | |
976de6a8 | 1038 | ndev->ethtool_ops = &fs_ethtool_ops; |
976de6a8 SW |
1039 | |
1040 | init_timer(&fep->phy_timer_list); | |
1041 | ||
1042 | netif_carrier_off(ndev); | |
1043 | ||
4fc9b87b LC |
1044 | ndev->features |= NETIF_F_SG; |
1045 | ||
976de6a8 SW |
1046 | ret = register_netdev(ndev); |
1047 | if (ret) | |
1048 | goto out_free_bd; | |
1049 | ||
fcb6a1c8 | 1050 | pr_info("%s: fs_enet: %pM\n", ndev->name, ndev->dev_addr); |
976de6a8 SW |
1051 | |
1052 | return 0; | |
1053 | ||
1054 | out_free_bd: | |
1055 | fep->ops->free_bd(ndev); | |
1056 | out_cleanup_data: | |
1057 | fep->ops->cleanup_data(ndev); | |
1058 | out_free_dev: | |
1059 | free_netdev(ndev); | |
e8f7f43a | 1060 | out_put: |
aa73832c | 1061 | of_node_put(fpi->phy_node); |
2771399a GS |
1062 | if (fpi->clk_per) |
1063 | clk_disable_unprepare(fpi->clk_per); | |
976de6a8 SW |
1064 | out_free_fpi: |
1065 | kfree(fpi); | |
1066 | return ret; | |
1067 | } | |
1068 | ||
2dc11581 | 1069 | static int fs_enet_remove(struct platform_device *ofdev) |
976de6a8 | 1070 | { |
8513fbd8 | 1071 | struct net_device *ndev = platform_get_drvdata(ofdev); |
976de6a8 SW |
1072 | struct fs_enet_private *fep = netdev_priv(ndev); |
1073 | ||
1074 | unregister_netdev(ndev); | |
1075 | ||
1076 | fep->ops->free_bd(ndev); | |
1077 | fep->ops->cleanup_data(ndev); | |
1078 | dev_set_drvdata(fep->dev, NULL); | |
aa73832c | 1079 | of_node_put(fep->fpi->phy_node); |
2771399a GS |
1080 | if (fep->fpi->clk_per) |
1081 | clk_disable_unprepare(fep->fpi->clk_per); | |
976de6a8 SW |
1082 | free_netdev(ndev); |
1083 | return 0; | |
1084 | } | |
1085 | ||
94e5a2a8 | 1086 | static const struct of_device_id fs_enet_match[] = { |
976de6a8 SW |
1087 | #ifdef CONFIG_FS_ENET_HAS_SCC |
1088 | { | |
1089 | .compatible = "fsl,cpm1-scc-enet", | |
1090 | .data = (void *)&fs_scc_ops, | |
1091 | }, | |
f4f62301 HS |
1092 | { |
1093 | .compatible = "fsl,cpm2-scc-enet", | |
1094 | .data = (void *)&fs_scc_ops, | |
1095 | }, | |
976de6a8 SW |
1096 | #endif |
1097 | #ifdef CONFIG_FS_ENET_HAS_FCC | |
1098 | { | |
1099 | .compatible = "fsl,cpm2-fcc-enet", | |
1100 | .data = (void *)&fs_fcc_ops, | |
1101 | }, | |
1102 | #endif | |
1103 | #ifdef CONFIG_FS_ENET_HAS_FEC | |
60ab4361 AG |
1104 | #ifdef CONFIG_FS_ENET_MPC5121_FEC |
1105 | { | |
1106 | .compatible = "fsl,mpc5121-fec", | |
1107 | .data = (void *)&fs_fec_ops, | |
1108 | }, | |
ba568335 VE |
1109 | { |
1110 | .compatible = "fsl,mpc5125-fec", | |
1111 | .data = (void *)&fs_fec_ops, | |
1112 | }, | |
60ab4361 | 1113 | #else |
976de6a8 SW |
1114 | { |
1115 | .compatible = "fsl,pq1-fec-enet", | |
1116 | .data = (void *)&fs_fec_ops, | |
1117 | }, | |
60ab4361 | 1118 | #endif |
976de6a8 SW |
1119 | #endif |
1120 | {} | |
1121 | }; | |
e72701ac | 1122 | MODULE_DEVICE_TABLE(of, fs_enet_match); |
976de6a8 | 1123 | |
74888760 | 1124 | static struct platform_driver fs_enet_driver = { |
4018294b | 1125 | .driver = { |
4018294b GL |
1126 | .name = "fs_enet", |
1127 | .of_match_table = fs_enet_match, | |
1128 | }, | |
976de6a8 SW |
1129 | .probe = fs_enet_probe, |
1130 | .remove = fs_enet_remove, | |
1131 | }; | |
1132 | ||
9b8ee8e7 VB |
1133 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1134 | static void fs_enet_netpoll(struct net_device *dev) | |
1135 | { | |
1136 | disable_irq(dev->irq); | |
7385d595 | 1137 | fs_enet_interrupt(dev->irq, dev); |
9b8ee8e7 VB |
1138 | enable_irq(dev->irq); |
1139 | } | |
1140 | #endif | |
1141 | ||
db62f684 | 1142 | module_platform_driver(fs_enet_driver); |