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1 | /* | |
2 | * PS3 gelic network driver. | |
3 | * | |
4 | * Copyright (C) 2007 Sony Computer Entertainment Inc. | |
5 | * Copyright 2006, 2007 Sony Corporation | |
6 | * | |
7 | * This file is based on: spider_net.c | |
8 | * | |
9 | * (C) Copyright IBM Corp. 2005 | |
10 | * | |
11 | * Authors : Utz Bacher <utz.bacher@de.ibm.com> | |
12 | * Jens Osterkamp <Jens.Osterkamp@de.ibm.com> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
29 | #undef DEBUG | |
30 | ||
31 | #include <linux/kernel.h> | |
32 | #include <linux/module.h> | |
33 | ||
34 | #include <linux/etherdevice.h> | |
35 | #include <linux/ethtool.h> | |
36 | #include <linux/if_vlan.h> | |
37 | ||
38 | #include <linux/in.h> | |
39 | #include <linux/ip.h> | |
40 | #include <linux/tcp.h> | |
41 | ||
42 | #include <linux/dma-mapping.h> | |
43 | #include <net/checksum.h> | |
44 | #include <asm/firmware.h> | |
45 | #include <asm/ps3.h> | |
46 | #include <asm/lv1call.h> | |
47 | ||
48 | #include "ps3_gelic_net.h" | |
49 | #include "ps3_gelic_wireless.h" | |
50 | ||
51 | #define DRV_NAME "Gelic Network Driver" | |
52 | #define DRV_VERSION "2.0" | |
53 | ||
54 | MODULE_AUTHOR("SCE Inc."); | |
55 | MODULE_DESCRIPTION("Gelic Network driver"); | |
56 | MODULE_LICENSE("GPL"); | |
57 | ||
58 | ||
59 | static inline void gelic_card_enable_rxdmac(struct gelic_card *card); | |
60 | static inline void gelic_card_disable_rxdmac(struct gelic_card *card); | |
61 | static inline void gelic_card_disable_txdmac(struct gelic_card *card); | |
62 | static inline void gelic_card_reset_chain(struct gelic_card *card, | |
63 | struct gelic_descr_chain *chain, | |
64 | struct gelic_descr *start_descr); | |
65 | ||
66 | /* set irq_mask */ | |
67 | int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask) | |
68 | { | |
69 | int status; | |
70 | ||
71 | status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card), | |
72 | mask, 0); | |
73 | if (status) | |
74 | dev_info(ctodev(card), | |
75 | "%s failed %d\n", __func__, status); | |
76 | return status; | |
77 | } | |
78 | ||
79 | static inline void gelic_card_rx_irq_on(struct gelic_card *card) | |
80 | { | |
81 | card->irq_mask |= GELIC_CARD_RXINT; | |
82 | gelic_card_set_irq_mask(card, card->irq_mask); | |
83 | } | |
84 | static inline void gelic_card_rx_irq_off(struct gelic_card *card) | |
85 | { | |
86 | card->irq_mask &= ~GELIC_CARD_RXINT; | |
87 | gelic_card_set_irq_mask(card, card->irq_mask); | |
88 | } | |
89 | ||
90 | static void gelic_card_get_ether_port_status(struct gelic_card *card, | |
91 | int inform) | |
92 | { | |
93 | u64 v2; | |
94 | struct net_device *ether_netdev; | |
95 | ||
96 | lv1_net_control(bus_id(card), dev_id(card), | |
97 | GELIC_LV1_GET_ETH_PORT_STATUS, | |
98 | GELIC_LV1_VLAN_TX_ETHERNET, 0, 0, | |
99 | &card->ether_port_status, &v2); | |
100 | ||
101 | if (inform) { | |
102 | ether_netdev = card->netdev[GELIC_PORT_ETHERNET]; | |
103 | if (card->ether_port_status & GELIC_LV1_ETHER_LINK_UP) | |
104 | netif_carrier_on(ether_netdev); | |
105 | else | |
106 | netif_carrier_off(ether_netdev); | |
107 | } | |
108 | } | |
109 | ||
110 | void gelic_card_up(struct gelic_card *card) | |
111 | { | |
112 | pr_debug("%s: called\n", __func__); | |
113 | mutex_lock(&card->updown_lock); | |
114 | if (atomic_inc_return(&card->users) == 1) { | |
115 | pr_debug("%s: real do\n", __func__); | |
116 | /* enable irq */ | |
117 | gelic_card_set_irq_mask(card, card->irq_mask); | |
118 | /* start rx */ | |
119 | gelic_card_enable_rxdmac(card); | |
120 | ||
121 | napi_enable(&card->napi); | |
122 | } | |
123 | mutex_unlock(&card->updown_lock); | |
124 | pr_debug("%s: done\n", __func__); | |
125 | } | |
126 | ||
127 | void gelic_card_down(struct gelic_card *card) | |
128 | { | |
129 | u64 mask; | |
130 | pr_debug("%s: called\n", __func__); | |
131 | mutex_lock(&card->updown_lock); | |
132 | if (atomic_dec_if_positive(&card->users) == 0) { | |
133 | pr_debug("%s: real do\n", __func__); | |
134 | napi_disable(&card->napi); | |
135 | /* | |
136 | * Disable irq. Wireless interrupts will | |
137 | * be disabled later if any | |
138 | */ | |
139 | mask = card->irq_mask & (GELIC_CARD_WLAN_EVENT_RECEIVED | | |
140 | GELIC_CARD_WLAN_COMMAND_COMPLETED); | |
141 | gelic_card_set_irq_mask(card, mask); | |
142 | /* stop rx */ | |
143 | gelic_card_disable_rxdmac(card); | |
144 | gelic_card_reset_chain(card, &card->rx_chain, | |
145 | card->descr + GELIC_NET_TX_DESCRIPTORS); | |
146 | /* stop tx */ | |
147 | gelic_card_disable_txdmac(card); | |
148 | } | |
149 | mutex_unlock(&card->updown_lock); | |
150 | pr_debug("%s: done\n", __func__); | |
151 | } | |
152 | ||
153 | /** | |
154 | * gelic_descr_get_status -- returns the status of a descriptor | |
155 | * @descr: descriptor to look at | |
156 | * | |
157 | * returns the status as in the dmac_cmd_status field of the descriptor | |
158 | */ | |
159 | static enum gelic_descr_dma_status | |
160 | gelic_descr_get_status(struct gelic_descr *descr) | |
161 | { | |
162 | return be32_to_cpu(descr->dmac_cmd_status) & GELIC_DESCR_DMA_STAT_MASK; | |
163 | } | |
164 | ||
165 | /** | |
166 | * gelic_descr_set_status -- sets the status of a descriptor | |
167 | * @descr: descriptor to change | |
168 | * @status: status to set in the descriptor | |
169 | * | |
170 | * changes the status to the specified value. Doesn't change other bits | |
171 | * in the status | |
172 | */ | |
173 | static void gelic_descr_set_status(struct gelic_descr *descr, | |
174 | enum gelic_descr_dma_status status) | |
175 | { | |
176 | descr->dmac_cmd_status = cpu_to_be32(status | | |
177 | (be32_to_cpu(descr->dmac_cmd_status) & | |
178 | ~GELIC_DESCR_DMA_STAT_MASK)); | |
179 | /* | |
180 | * dma_cmd_status field is used to indicate whether the descriptor | |
181 | * is valid or not. | |
182 | * Usually caller of this function wants to inform that to the | |
183 | * hardware, so we assure here the hardware sees the change. | |
184 | */ | |
185 | wmb(); | |
186 | } | |
187 | ||
188 | /** | |
189 | * gelic_card_free_chain - free descriptor chain | |
190 | * @card: card structure | |
191 | * @descr_in: address of desc | |
192 | */ | |
193 | static void gelic_card_free_chain(struct gelic_card *card, | |
194 | struct gelic_descr *descr_in) | |
195 | { | |
196 | struct gelic_descr *descr; | |
197 | ||
198 | for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) { | |
199 | dma_unmap_single(ctodev(card), descr->bus_addr, | |
200 | GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); | |
201 | descr->bus_addr = 0; | |
202 | } | |
203 | } | |
204 | ||
205 | /** | |
206 | * gelic_card_init_chain - links descriptor chain | |
207 | * @card: card structure | |
208 | * @chain: address of chain | |
209 | * @start_descr: address of descriptor array | |
210 | * @no: number of descriptors | |
211 | * | |
212 | * we manage a circular list that mirrors the hardware structure, | |
213 | * except that the hardware uses bus addresses. | |
214 | * | |
215 | * returns 0 on success, <0 on failure | |
216 | */ | |
217 | static int __devinit gelic_card_init_chain(struct gelic_card *card, | |
218 | struct gelic_descr_chain *chain, | |
219 | struct gelic_descr *start_descr, | |
220 | int no) | |
221 | { | |
222 | int i; | |
223 | struct gelic_descr *descr; | |
224 | ||
225 | descr = start_descr; | |
226 | memset(descr, 0, sizeof(*descr) * no); | |
227 | ||
228 | /* set up the hardware pointers in each descriptor */ | |
229 | for (i = 0; i < no; i++, descr++) { | |
230 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); | |
231 | descr->bus_addr = | |
232 | dma_map_single(ctodev(card), descr, | |
233 | GELIC_DESCR_SIZE, | |
234 | DMA_BIDIRECTIONAL); | |
235 | ||
236 | if (!descr->bus_addr) | |
237 | goto iommu_error; | |
238 | ||
239 | descr->next = descr + 1; | |
240 | descr->prev = descr - 1; | |
241 | } | |
242 | /* make them as ring */ | |
243 | (descr - 1)->next = start_descr; | |
244 | start_descr->prev = (descr - 1); | |
245 | ||
246 | /* chain bus addr of hw descriptor */ | |
247 | descr = start_descr; | |
248 | for (i = 0; i < no; i++, descr++) { | |
249 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); | |
250 | } | |
251 | ||
252 | chain->head = start_descr; | |
253 | chain->tail = start_descr; | |
254 | ||
255 | /* do not chain last hw descriptor */ | |
256 | (descr - 1)->next_descr_addr = 0; | |
257 | ||
258 | return 0; | |
259 | ||
260 | iommu_error: | |
261 | for (i--, descr--; 0 <= i; i--, descr--) | |
262 | if (descr->bus_addr) | |
263 | dma_unmap_single(ctodev(card), descr->bus_addr, | |
264 | GELIC_DESCR_SIZE, | |
265 | DMA_BIDIRECTIONAL); | |
266 | return -ENOMEM; | |
267 | } | |
268 | ||
269 | /** | |
270 | * gelic_card_reset_chain - reset status of a descriptor chain | |
271 | * @card: card structure | |
272 | * @chain: address of chain | |
273 | * @start_descr: address of descriptor array | |
274 | * | |
275 | * Reset the status of dma descriptors to ready state | |
276 | * and re-initialize the hardware chain for later use | |
277 | */ | |
278 | static void gelic_card_reset_chain(struct gelic_card *card, | |
279 | struct gelic_descr_chain *chain, | |
280 | struct gelic_descr *start_descr) | |
281 | { | |
282 | struct gelic_descr *descr; | |
283 | ||
284 | for (descr = start_descr; start_descr != descr->next; descr++) { | |
285 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); | |
286 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); | |
287 | } | |
288 | ||
289 | chain->head = start_descr; | |
290 | chain->tail = (descr - 1); | |
291 | ||
292 | (descr - 1)->next_descr_addr = 0; | |
293 | } | |
294 | /** | |
295 | * gelic_descr_prepare_rx - reinitializes a rx descriptor | |
296 | * @card: card structure | |
297 | * @descr: descriptor to re-init | |
298 | * | |
299 | * return 0 on success, <0 on failure | |
300 | * | |
301 | * allocates a new rx skb, iommu-maps it and attaches it to the descriptor. | |
302 | * Activate the descriptor state-wise | |
303 | */ | |
304 | static int gelic_descr_prepare_rx(struct gelic_card *card, | |
305 | struct gelic_descr *descr) | |
306 | { | |
307 | int offset; | |
308 | unsigned int bufsize; | |
309 | ||
310 | if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE) | |
311 | dev_info(ctodev(card), "%s: ERROR status \n", __func__); | |
312 | /* we need to round up the buffer size to a multiple of 128 */ | |
313 | bufsize = ALIGN(GELIC_NET_MAX_MTU, GELIC_NET_RXBUF_ALIGN); | |
314 | ||
315 | /* and we need to have it 128 byte aligned, therefore we allocate a | |
316 | * bit more */ | |
317 | descr->skb = dev_alloc_skb(bufsize + GELIC_NET_RXBUF_ALIGN - 1); | |
318 | if (!descr->skb) { | |
319 | descr->buf_addr = 0; /* tell DMAC don't touch memory */ | |
320 | dev_info(ctodev(card), | |
321 | "%s:allocate skb failed !!\n", __func__); | |
322 | return -ENOMEM; | |
323 | } | |
324 | descr->buf_size = cpu_to_be32(bufsize); | |
325 | descr->dmac_cmd_status = 0; | |
326 | descr->result_size = 0; | |
327 | descr->valid_size = 0; | |
328 | descr->data_error = 0; | |
329 | ||
330 | offset = ((unsigned long)descr->skb->data) & | |
331 | (GELIC_NET_RXBUF_ALIGN - 1); | |
332 | if (offset) | |
333 | skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset); | |
334 | /* io-mmu-map the skb */ | |
335 | descr->buf_addr = cpu_to_be32(dma_map_single(ctodev(card), | |
336 | descr->skb->data, | |
337 | GELIC_NET_MAX_MTU, | |
338 | DMA_FROM_DEVICE)); | |
339 | if (!descr->buf_addr) { | |
340 | dev_kfree_skb_any(descr->skb); | |
341 | descr->skb = NULL; | |
342 | dev_info(ctodev(card), | |
343 | "%s:Could not iommu-map rx buffer\n", __func__); | |
344 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); | |
345 | return -ENOMEM; | |
346 | } else { | |
347 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); | |
348 | return 0; | |
349 | } | |
350 | } | |
351 | ||
352 | /** | |
353 | * gelic_card_release_rx_chain - free all skb of rx descr | |
354 | * @card: card structure | |
355 | * | |
356 | */ | |
357 | static void gelic_card_release_rx_chain(struct gelic_card *card) | |
358 | { | |
359 | struct gelic_descr *descr = card->rx_chain.head; | |
360 | ||
361 | do { | |
362 | if (descr->skb) { | |
363 | dma_unmap_single(ctodev(card), | |
364 | be32_to_cpu(descr->buf_addr), | |
365 | descr->skb->len, | |
366 | DMA_FROM_DEVICE); | |
367 | descr->buf_addr = 0; | |
368 | dev_kfree_skb_any(descr->skb); | |
369 | descr->skb = NULL; | |
370 | gelic_descr_set_status(descr, | |
371 | GELIC_DESCR_DMA_NOT_IN_USE); | |
372 | } | |
373 | descr = descr->next; | |
374 | } while (descr != card->rx_chain.head); | |
375 | } | |
376 | ||
377 | /** | |
378 | * gelic_card_fill_rx_chain - fills descriptors/skbs in the rx chains | |
379 | * @card: card structure | |
380 | * | |
381 | * fills all descriptors in the rx chain: allocates skbs | |
382 | * and iommu-maps them. | |
383 | * returns 0 on success, < 0 on failure | |
384 | */ | |
385 | static int gelic_card_fill_rx_chain(struct gelic_card *card) | |
386 | { | |
387 | struct gelic_descr *descr = card->rx_chain.head; | |
388 | int ret; | |
389 | ||
390 | do { | |
391 | if (!descr->skb) { | |
392 | ret = gelic_descr_prepare_rx(card, descr); | |
393 | if (ret) | |
394 | goto rewind; | |
395 | } | |
396 | descr = descr->next; | |
397 | } while (descr != card->rx_chain.head); | |
398 | ||
399 | return 0; | |
400 | rewind: | |
401 | gelic_card_release_rx_chain(card); | |
402 | return ret; | |
403 | } | |
404 | ||
405 | /** | |
406 | * gelic_card_alloc_rx_skbs - allocates rx skbs in rx descriptor chains | |
407 | * @card: card structure | |
408 | * | |
409 | * returns 0 on success, < 0 on failure | |
410 | */ | |
411 | static int __devinit gelic_card_alloc_rx_skbs(struct gelic_card *card) | |
412 | { | |
413 | struct gelic_descr_chain *chain; | |
414 | int ret; | |
415 | chain = &card->rx_chain; | |
416 | ret = gelic_card_fill_rx_chain(card); | |
417 | chain->tail = card->rx_top->prev; /* point to the last */ | |
418 | return ret; | |
419 | } | |
420 | ||
421 | /** | |
422 | * gelic_descr_release_tx - processes a used tx descriptor | |
423 | * @card: card structure | |
424 | * @descr: descriptor to release | |
425 | * | |
426 | * releases a used tx descriptor (unmapping, freeing of skb) | |
427 | */ | |
428 | static void gelic_descr_release_tx(struct gelic_card *card, | |
429 | struct gelic_descr *descr) | |
430 | { | |
431 | struct sk_buff *skb = descr->skb; | |
432 | ||
433 | BUG_ON(!(be32_to_cpu(descr->data_status) & GELIC_DESCR_TX_TAIL)); | |
434 | ||
435 | dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), skb->len, | |
436 | DMA_TO_DEVICE); | |
437 | dev_kfree_skb_any(skb); | |
438 | ||
439 | descr->buf_addr = 0; | |
440 | descr->buf_size = 0; | |
441 | descr->next_descr_addr = 0; | |
442 | descr->result_size = 0; | |
443 | descr->valid_size = 0; | |
444 | descr->data_status = 0; | |
445 | descr->data_error = 0; | |
446 | descr->skb = NULL; | |
447 | ||
448 | /* set descr status */ | |
449 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); | |
450 | } | |
451 | ||
452 | static void gelic_card_stop_queues(struct gelic_card *card) | |
453 | { | |
454 | netif_stop_queue(card->netdev[GELIC_PORT_ETHERNET]); | |
455 | ||
456 | if (card->netdev[GELIC_PORT_WIRELESS]) | |
457 | netif_stop_queue(card->netdev[GELIC_PORT_WIRELESS]); | |
458 | } | |
459 | static void gelic_card_wake_queues(struct gelic_card *card) | |
460 | { | |
461 | netif_wake_queue(card->netdev[GELIC_PORT_ETHERNET]); | |
462 | ||
463 | if (card->netdev[GELIC_PORT_WIRELESS]) | |
464 | netif_wake_queue(card->netdev[GELIC_PORT_WIRELESS]); | |
465 | } | |
466 | /** | |
467 | * gelic_card_release_tx_chain - processes sent tx descriptors | |
468 | * @card: adapter structure | |
469 | * @stop: net_stop sequence | |
470 | * | |
471 | * releases the tx descriptors that gelic has finished with | |
472 | */ | |
473 | static void gelic_card_release_tx_chain(struct gelic_card *card, int stop) | |
474 | { | |
475 | struct gelic_descr_chain *tx_chain; | |
476 | enum gelic_descr_dma_status status; | |
477 | struct net_device *netdev; | |
478 | int release = 0; | |
479 | ||
480 | for (tx_chain = &card->tx_chain; | |
481 | tx_chain->head != tx_chain->tail && tx_chain->tail; | |
482 | tx_chain->tail = tx_chain->tail->next) { | |
483 | status = gelic_descr_get_status(tx_chain->tail); | |
484 | netdev = tx_chain->tail->skb->dev; | |
485 | switch (status) { | |
486 | case GELIC_DESCR_DMA_RESPONSE_ERROR: | |
487 | case GELIC_DESCR_DMA_PROTECTION_ERROR: | |
488 | case GELIC_DESCR_DMA_FORCE_END: | |
489 | if (printk_ratelimit()) | |
490 | dev_info(ctodev(card), | |
491 | "%s: forcing end of tx descriptor " \ | |
492 | "with status %x\n", | |
493 | __func__, status); | |
494 | netdev->stats.tx_dropped++; | |
495 | break; | |
496 | ||
497 | case GELIC_DESCR_DMA_COMPLETE: | |
498 | if (tx_chain->tail->skb) { | |
499 | netdev->stats.tx_packets++; | |
500 | netdev->stats.tx_bytes += | |
501 | tx_chain->tail->skb->len; | |
502 | } | |
503 | break; | |
504 | ||
505 | case GELIC_DESCR_DMA_CARDOWNED: | |
506 | /* pending tx request */ | |
507 | default: | |
508 | /* any other value (== GELIC_DESCR_DMA_NOT_IN_USE) */ | |
509 | if (!stop) | |
510 | goto out; | |
511 | } | |
512 | gelic_descr_release_tx(card, tx_chain->tail); | |
513 | release ++; | |
514 | } | |
515 | out: | |
516 | if (!stop && release) | |
517 | gelic_card_wake_queues(card); | |
518 | } | |
519 | ||
520 | /** | |
521 | * gelic_net_set_multi - sets multicast addresses and promisc flags | |
522 | * @netdev: interface device structure | |
523 | * | |
524 | * gelic_net_set_multi configures multicast addresses as needed for the | |
525 | * netdev interface. It also sets up multicast, allmulti and promisc | |
526 | * flags appropriately | |
527 | */ | |
528 | void gelic_net_set_multi(struct net_device *netdev) | |
529 | { | |
530 | struct gelic_card *card = netdev_card(netdev); | |
531 | struct dev_mc_list *mc; | |
532 | unsigned int i; | |
533 | uint8_t *p; | |
534 | u64 addr; | |
535 | int status; | |
536 | ||
537 | /* clear all multicast address */ | |
538 | status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card), | |
539 | 0, 1); | |
540 | if (status) | |
541 | dev_err(ctodev(card), | |
542 | "lv1_net_remove_multicast_address failed %d\n", | |
543 | status); | |
544 | /* set broadcast address */ | |
545 | status = lv1_net_add_multicast_address(bus_id(card), dev_id(card), | |
546 | GELIC_NET_BROADCAST_ADDR, 0); | |
547 | if (status) | |
548 | dev_err(ctodev(card), | |
549 | "lv1_net_add_multicast_address failed, %d\n", | |
550 | status); | |
551 | ||
552 | if ((netdev->flags & IFF_ALLMULTI) || | |
553 | (netdev->mc_count > GELIC_NET_MC_COUNT_MAX)) { | |
554 | status = lv1_net_add_multicast_address(bus_id(card), | |
555 | dev_id(card), | |
556 | 0, 1); | |
557 | if (status) | |
558 | dev_err(ctodev(card), | |
559 | "lv1_net_add_multicast_address failed, %d\n", | |
560 | status); | |
561 | return; | |
562 | } | |
563 | ||
564 | /* set multicast addresses */ | |
565 | for (mc = netdev->mc_list; mc; mc = mc->next) { | |
566 | addr = 0; | |
567 | p = mc->dmi_addr; | |
568 | for (i = 0; i < ETH_ALEN; i++) { | |
569 | addr <<= 8; | |
570 | addr |= *p++; | |
571 | } | |
572 | status = lv1_net_add_multicast_address(bus_id(card), | |
573 | dev_id(card), | |
574 | addr, 0); | |
575 | if (status) | |
576 | dev_err(ctodev(card), | |
577 | "lv1_net_add_multicast_address failed, %d\n", | |
578 | status); | |
579 | } | |
580 | } | |
581 | ||
582 | /** | |
583 | * gelic_card_enable_rxdmac - enables the receive DMA controller | |
584 | * @card: card structure | |
585 | * | |
586 | * gelic_card_enable_rxdmac enables the DMA controller by setting RX_DMA_EN | |
587 | * in the GDADMACCNTR register | |
588 | */ | |
589 | static inline void gelic_card_enable_rxdmac(struct gelic_card *card) | |
590 | { | |
591 | int status; | |
592 | ||
593 | #ifdef DEBUG | |
594 | if (gelic_descr_get_status(card->rx_chain.head) != | |
595 | GELIC_DESCR_DMA_CARDOWNED) { | |
596 | printk(KERN_ERR "%s: status=%x\n", __func__, | |
597 | be32_to_cpu(card->rx_chain.head->dmac_cmd_status)); | |
598 | printk(KERN_ERR "%s: nextphy=%x\n", __func__, | |
599 | be32_to_cpu(card->rx_chain.head->next_descr_addr)); | |
600 | printk(KERN_ERR "%s: head=%p\n", __func__, | |
601 | card->rx_chain.head); | |
602 | } | |
603 | #endif | |
604 | status = lv1_net_start_rx_dma(bus_id(card), dev_id(card), | |
605 | card->rx_chain.head->bus_addr, 0); | |
606 | if (status) | |
607 | dev_info(ctodev(card), | |
608 | "lv1_net_start_rx_dma failed, status=%d\n", status); | |
609 | } | |
610 | ||
611 | /** | |
612 | * gelic_card_disable_rxdmac - disables the receive DMA controller | |
613 | * @card: card structure | |
614 | * | |
615 | * gelic_card_disable_rxdmac terminates processing on the DMA controller by | |
616 | * turing off DMA and issueing a force end | |
617 | */ | |
618 | static inline void gelic_card_disable_rxdmac(struct gelic_card *card) | |
619 | { | |
620 | int status; | |
621 | ||
622 | /* this hvc blocks until the DMA in progress really stopped */ | |
623 | status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card), 0); | |
624 | if (status) | |
625 | dev_err(ctodev(card), | |
626 | "lv1_net_stop_rx_dma faild, %d\n", status); | |
627 | } | |
628 | ||
629 | /** | |
630 | * gelic_card_disable_txdmac - disables the transmit DMA controller | |
631 | * @card: card structure | |
632 | * | |
633 | * gelic_card_disable_txdmac terminates processing on the DMA controller by | |
634 | * turing off DMA and issueing a force end | |
635 | */ | |
636 | static inline void gelic_card_disable_txdmac(struct gelic_card *card) | |
637 | { | |
638 | int status; | |
639 | ||
640 | /* this hvc blocks until the DMA in progress really stopped */ | |
641 | status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card), 0); | |
642 | if (status) | |
643 | dev_err(ctodev(card), | |
644 | "lv1_net_stop_tx_dma faild, status=%d\n", status); | |
645 | } | |
646 | ||
647 | /** | |
648 | * gelic_net_stop - called upon ifconfig down | |
649 | * @netdev: interface device structure | |
650 | * | |
651 | * always returns 0 | |
652 | */ | |
653 | int gelic_net_stop(struct net_device *netdev) | |
654 | { | |
655 | struct gelic_card *card; | |
656 | ||
657 | pr_debug("%s: start\n", __func__); | |
658 | ||
659 | netif_stop_queue(netdev); | |
660 | netif_carrier_off(netdev); | |
661 | ||
662 | card = netdev_card(netdev); | |
663 | gelic_card_down(card); | |
664 | ||
665 | pr_debug("%s: done\n", __func__); | |
666 | return 0; | |
667 | } | |
668 | ||
669 | /** | |
670 | * gelic_card_get_next_tx_descr - returns the next available tx descriptor | |
671 | * @card: device structure to get descriptor from | |
672 | * | |
673 | * returns the address of the next descriptor, or NULL if not available. | |
674 | */ | |
675 | static struct gelic_descr * | |
676 | gelic_card_get_next_tx_descr(struct gelic_card *card) | |
677 | { | |
678 | if (!card->tx_chain.head) | |
679 | return NULL; | |
680 | /* see if the next descriptor is free */ | |
681 | if (card->tx_chain.tail != card->tx_chain.head->next && | |
682 | gelic_descr_get_status(card->tx_chain.head) == | |
683 | GELIC_DESCR_DMA_NOT_IN_USE) | |
684 | return card->tx_chain.head; | |
685 | else | |
686 | return NULL; | |
687 | ||
688 | } | |
689 | ||
690 | /** | |
691 | * gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field | |
692 | * @descr: descriptor structure to fill out | |
693 | * @skb: packet to consider | |
694 | * | |
695 | * fills out the command and status field of the descriptor structure, | |
696 | * depending on hardware checksum settings. This function assumes a wmb() | |
697 | * has executed before. | |
698 | */ | |
699 | static void gelic_descr_set_tx_cmdstat(struct gelic_descr *descr, | |
700 | struct sk_buff *skb) | |
701 | { | |
702 | if (skb->ip_summed != CHECKSUM_PARTIAL) | |
703 | descr->dmac_cmd_status = | |
704 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | | |
705 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
706 | else { | |
707 | /* is packet ip? | |
708 | * if yes: tcp? udp? */ | |
709 | if (skb->protocol == htons(ETH_P_IP)) { | |
710 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
711 | descr->dmac_cmd_status = | |
712 | cpu_to_be32(GELIC_DESCR_DMA_CMD_TCP_CHKSUM | | |
713 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
714 | ||
715 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) | |
716 | descr->dmac_cmd_status = | |
717 | cpu_to_be32(GELIC_DESCR_DMA_CMD_UDP_CHKSUM | | |
718 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
719 | else /* | |
720 | * the stack should checksum non-tcp and non-udp | |
721 | * packets on his own: NETIF_F_IP_CSUM | |
722 | */ | |
723 | descr->dmac_cmd_status = | |
724 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | | |
725 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
726 | } | |
727 | } | |
728 | } | |
729 | ||
730 | static inline struct sk_buff *gelic_put_vlan_tag(struct sk_buff *skb, | |
731 | unsigned short tag) | |
732 | { | |
733 | struct vlan_ethhdr *veth; | |
734 | static unsigned int c; | |
735 | ||
736 | if (skb_headroom(skb) < VLAN_HLEN) { | |
737 | struct sk_buff *sk_tmp = skb; | |
738 | pr_debug("%s: hd=%d c=%ud\n", __func__, skb_headroom(skb), c); | |
739 | skb = skb_realloc_headroom(sk_tmp, VLAN_HLEN); | |
740 | if (!skb) | |
741 | return NULL; | |
742 | dev_kfree_skb_any(sk_tmp); | |
743 | } | |
744 | veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN); | |
745 | ||
746 | /* Move the mac addresses to the top of buffer */ | |
747 | memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN); | |
748 | ||
749 | veth->h_vlan_proto = cpu_to_be16(ETH_P_8021Q); | |
750 | veth->h_vlan_TCI = htons(tag); | |
751 | ||
752 | return skb; | |
753 | } | |
754 | ||
755 | /** | |
756 | * gelic_descr_prepare_tx - setup a descriptor for sending packets | |
757 | * @card: card structure | |
758 | * @descr: descriptor structure | |
759 | * @skb: packet to use | |
760 | * | |
761 | * returns 0 on success, <0 on failure. | |
762 | * | |
763 | */ | |
764 | static int gelic_descr_prepare_tx(struct gelic_card *card, | |
765 | struct gelic_descr *descr, | |
766 | struct sk_buff *skb) | |
767 | { | |
768 | dma_addr_t buf; | |
769 | ||
770 | if (card->vlan_required) { | |
771 | struct sk_buff *skb_tmp; | |
772 | enum gelic_port_type type; | |
773 | ||
774 | type = netdev_port(skb->dev)->type; | |
775 | skb_tmp = gelic_put_vlan_tag(skb, | |
776 | card->vlan[type].tx); | |
777 | if (!skb_tmp) | |
778 | return -ENOMEM; | |
779 | skb = skb_tmp; | |
780 | } | |
781 | ||
782 | buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE); | |
783 | ||
784 | if (!buf) { | |
785 | dev_err(ctodev(card), | |
786 | "dma map 2 failed (%p, %i). Dropping packet\n", | |
787 | skb->data, skb->len); | |
788 | return -ENOMEM; | |
789 | } | |
790 | ||
791 | descr->buf_addr = cpu_to_be32(buf); | |
792 | descr->buf_size = cpu_to_be32(skb->len); | |
793 | descr->skb = skb; | |
794 | descr->data_status = 0; | |
795 | descr->next_descr_addr = 0; /* terminate hw descr */ | |
796 | gelic_descr_set_tx_cmdstat(descr, skb); | |
797 | ||
798 | /* bump free descriptor pointer */ | |
799 | card->tx_chain.head = descr->next; | |
800 | return 0; | |
801 | } | |
802 | ||
803 | /** | |
804 | * gelic_card_kick_txdma - enables TX DMA processing | |
805 | * @card: card structure | |
806 | * @descr: descriptor address to enable TX processing at | |
807 | * | |
808 | */ | |
809 | static int gelic_card_kick_txdma(struct gelic_card *card, | |
810 | struct gelic_descr *descr) | |
811 | { | |
812 | int status = 0; | |
813 | ||
814 | if (card->tx_dma_progress) | |
815 | return 0; | |
816 | ||
817 | if (gelic_descr_get_status(descr) == GELIC_DESCR_DMA_CARDOWNED) { | |
818 | card->tx_dma_progress = 1; | |
819 | status = lv1_net_start_tx_dma(bus_id(card), dev_id(card), | |
820 | descr->bus_addr, 0); | |
821 | if (status) | |
822 | dev_info(ctodev(card), "lv1_net_start_txdma failed," \ | |
823 | "status=%d\n", status); | |
824 | } | |
825 | return status; | |
826 | } | |
827 | ||
828 | /** | |
829 | * gelic_net_xmit - transmits a frame over the device | |
830 | * @skb: packet to send out | |
831 | * @netdev: interface device structure | |
832 | * | |
833 | * returns 0 on success, <0 on failure | |
834 | */ | |
835 | int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev) | |
836 | { | |
837 | struct gelic_card *card = netdev_card(netdev); | |
838 | struct gelic_descr *descr; | |
839 | int result; | |
840 | unsigned long flags; | |
841 | ||
842 | spin_lock_irqsave(&card->tx_lock, flags); | |
843 | ||
844 | gelic_card_release_tx_chain(card, 0); | |
845 | ||
846 | descr = gelic_card_get_next_tx_descr(card); | |
847 | if (!descr) { | |
848 | /* | |
849 | * no more descriptors free | |
850 | */ | |
851 | gelic_card_stop_queues(card); | |
852 | spin_unlock_irqrestore(&card->tx_lock, flags); | |
853 | return NETDEV_TX_BUSY; | |
854 | } | |
855 | ||
856 | result = gelic_descr_prepare_tx(card, descr, skb); | |
857 | if (result) { | |
858 | /* | |
859 | * DMA map failed. As chanses are that failure | |
860 | * would continue, just release skb and return | |
861 | */ | |
862 | netdev->stats.tx_dropped++; | |
863 | dev_kfree_skb_any(skb); | |
864 | spin_unlock_irqrestore(&card->tx_lock, flags); | |
865 | return NETDEV_TX_OK; | |
866 | } | |
867 | /* | |
868 | * link this prepared descriptor to previous one | |
869 | * to achieve high performance | |
870 | */ | |
871 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); | |
872 | /* | |
873 | * as hardware descriptor is modified in the above lines, | |
874 | * ensure that the hardware sees it | |
875 | */ | |
876 | wmb(); | |
877 | if (gelic_card_kick_txdma(card, descr)) { | |
878 | /* | |
879 | * kick failed. | |
880 | * release descriptors which were just prepared | |
881 | */ | |
882 | netdev->stats.tx_dropped++; | |
883 | gelic_descr_release_tx(card, descr); | |
884 | gelic_descr_release_tx(card, descr->next); | |
885 | card->tx_chain.tail = descr->next->next; | |
886 | dev_info(ctodev(card), "%s: kick failure\n", __func__); | |
887 | } else { | |
888 | /* OK, DMA started/reserved */ | |
889 | netdev->trans_start = jiffies; | |
890 | } | |
891 | ||
892 | spin_unlock_irqrestore(&card->tx_lock, flags); | |
893 | return NETDEV_TX_OK; | |
894 | } | |
895 | ||
896 | /** | |
897 | * gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on | |
898 | * @descr: descriptor to process | |
899 | * @card: card structure | |
900 | * @netdev: net_device structure to be passed packet | |
901 | * | |
902 | * iommu-unmaps the skb, fills out skb structure and passes the data to the | |
903 | * stack. The descriptor state is not changed. | |
904 | */ | |
905 | static void gelic_net_pass_skb_up(struct gelic_descr *descr, | |
906 | struct gelic_card *card, | |
907 | struct net_device *netdev) | |
908 | ||
909 | { | |
910 | struct sk_buff *skb = descr->skb; | |
911 | u32 data_status, data_error; | |
912 | ||
913 | data_status = be32_to_cpu(descr->data_status); | |
914 | data_error = be32_to_cpu(descr->data_error); | |
915 | /* unmap skb buffer */ | |
916 | dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), | |
917 | GELIC_NET_MAX_MTU, | |
918 | DMA_FROM_DEVICE); | |
919 | ||
920 | skb_put(skb, be32_to_cpu(descr->valid_size)? | |
921 | be32_to_cpu(descr->valid_size) : | |
922 | be32_to_cpu(descr->result_size)); | |
923 | if (!descr->valid_size) | |
924 | dev_info(ctodev(card), "buffer full %x %x %x\n", | |
925 | be32_to_cpu(descr->result_size), | |
926 | be32_to_cpu(descr->buf_size), | |
927 | be32_to_cpu(descr->dmac_cmd_status)); | |
928 | ||
929 | descr->skb = NULL; | |
930 | /* | |
931 | * the card put 2 bytes vlan tag in front | |
932 | * of the ethernet frame | |
933 | */ | |
934 | skb_pull(skb, 2); | |
935 | skb->protocol = eth_type_trans(skb, netdev); | |
936 | ||
937 | /* checksum offload */ | |
938 | if (card->rx_csum) { | |
939 | if ((data_status & GELIC_DESCR_DATA_STATUS_CHK_MASK) && | |
940 | (!(data_error & GELIC_DESCR_DATA_ERROR_CHK_MASK))) | |
941 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
942 | else | |
943 | skb->ip_summed = CHECKSUM_NONE; | |
944 | } else | |
945 | skb->ip_summed = CHECKSUM_NONE; | |
946 | ||
947 | /* update netdevice statistics */ | |
948 | netdev->stats.rx_packets++; | |
949 | netdev->stats.rx_bytes += skb->len; | |
950 | ||
951 | /* pass skb up to stack */ | |
952 | netif_receive_skb(skb); | |
953 | } | |
954 | ||
955 | /** | |
956 | * gelic_card_decode_one_descr - processes an rx descriptor | |
957 | * @card: card structure | |
958 | * | |
959 | * returns 1 if a packet has been sent to the stack, otherwise 0 | |
960 | * | |
961 | * processes an rx descriptor by iommu-unmapping the data buffer and passing | |
962 | * the packet up to the stack | |
963 | */ | |
964 | static int gelic_card_decode_one_descr(struct gelic_card *card) | |
965 | { | |
966 | enum gelic_descr_dma_status status; | |
967 | struct gelic_descr_chain *chain = &card->rx_chain; | |
968 | struct gelic_descr *descr = chain->head; | |
969 | struct net_device *netdev = NULL; | |
970 | int dmac_chain_ended; | |
971 | ||
972 | status = gelic_descr_get_status(descr); | |
973 | /* is this descriptor terminated with next_descr == NULL? */ | |
974 | dmac_chain_ended = | |
975 | be32_to_cpu(descr->dmac_cmd_status) & | |
976 | GELIC_DESCR_RX_DMA_CHAIN_END; | |
977 | ||
978 | if (status == GELIC_DESCR_DMA_CARDOWNED) | |
979 | return 0; | |
980 | ||
981 | if (status == GELIC_DESCR_DMA_NOT_IN_USE) { | |
982 | dev_dbg(ctodev(card), "dormant descr? %p\n", descr); | |
983 | return 0; | |
984 | } | |
985 | ||
986 | /* netdevice select */ | |
987 | if (card->vlan_required) { | |
988 | unsigned int i; | |
989 | u16 vid; | |
990 | vid = *(u16 *)(descr->skb->data) & VLAN_VID_MASK; | |
991 | for (i = 0; i < GELIC_PORT_MAX; i++) { | |
992 | if (card->vlan[i].rx == vid) { | |
993 | netdev = card->netdev[i]; | |
994 | break; | |
995 | } | |
996 | }; | |
997 | if (GELIC_PORT_MAX <= i) { | |
998 | pr_info("%s: unknown packet vid=%x\n", __func__, vid); | |
999 | goto refill; | |
1000 | } | |
1001 | } else | |
1002 | netdev = card->netdev[GELIC_PORT_ETHERNET]; | |
1003 | ||
1004 | if ((status == GELIC_DESCR_DMA_RESPONSE_ERROR) || | |
1005 | (status == GELIC_DESCR_DMA_PROTECTION_ERROR) || | |
1006 | (status == GELIC_DESCR_DMA_FORCE_END)) { | |
1007 | dev_info(ctodev(card), "dropping RX descriptor with state %x\n", | |
1008 | status); | |
1009 | netdev->stats.rx_dropped++; | |
1010 | goto refill; | |
1011 | } | |
1012 | ||
1013 | if (status == GELIC_DESCR_DMA_BUFFER_FULL) { | |
1014 | /* | |
1015 | * Buffer full would occur if and only if | |
1016 | * the frame length was longer than the size of this | |
1017 | * descriptor's buffer. If the frame length was equal | |
1018 | * to or shorter than buffer'size, FRAME_END condition | |
1019 | * would occur. | |
1020 | * Anyway this frame was longer than the MTU, | |
1021 | * just drop it. | |
1022 | */ | |
1023 | dev_info(ctodev(card), "overlength frame\n"); | |
1024 | goto refill; | |
1025 | } | |
1026 | /* | |
1027 | * descriptoers any other than FRAME_END here should | |
1028 | * be treated as error. | |
1029 | */ | |
1030 | if (status != GELIC_DESCR_DMA_FRAME_END) { | |
1031 | dev_dbg(ctodev(card), "RX descriptor with state %x\n", | |
1032 | status); | |
1033 | goto refill; | |
1034 | } | |
1035 | ||
1036 | /* ok, we've got a packet in descr */ | |
1037 | gelic_net_pass_skb_up(descr, card, netdev); | |
1038 | refill: | |
1039 | /* | |
1040 | * So that always DMAC can see the end | |
1041 | * of the descriptor chain to avoid | |
1042 | * from unwanted DMAC overrun. | |
1043 | */ | |
1044 | descr->next_descr_addr = 0; | |
1045 | ||
1046 | /* change the descriptor state: */ | |
1047 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); | |
1048 | ||
1049 | /* | |
1050 | * this call can fail, but for now, just leave this | |
1051 | * decriptor without skb | |
1052 | */ | |
1053 | gelic_descr_prepare_rx(card, descr); | |
1054 | ||
1055 | chain->tail = descr; | |
1056 | chain->head = descr->next; | |
1057 | ||
1058 | /* | |
1059 | * Set this descriptor the end of the chain. | |
1060 | */ | |
1061 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); | |
1062 | ||
1063 | /* | |
1064 | * If dmac chain was met, DMAC stopped. | |
1065 | * thus re-enable it | |
1066 | */ | |
1067 | if (dmac_chain_ended) { | |
1068 | card->rx_dma_restart_required = 1; | |
1069 | dev_dbg(ctodev(card), "reenable rx dma scheduled\n"); | |
1070 | } | |
1071 | ||
1072 | return 1; | |
1073 | } | |
1074 | ||
1075 | /** | |
1076 | * gelic_net_poll - NAPI poll function called by the stack to return packets | |
1077 | * @napi: napi structure | |
1078 | * @budget: number of packets we can pass to the stack at most | |
1079 | * | |
1080 | * returns the number of the processed packets | |
1081 | * | |
1082 | */ | |
1083 | static int gelic_net_poll(struct napi_struct *napi, int budget) | |
1084 | { | |
1085 | struct gelic_card *card = container_of(napi, struct gelic_card, napi); | |
1086 | int packets_done = 0; | |
1087 | ||
1088 | while (packets_done < budget) { | |
1089 | if (!gelic_card_decode_one_descr(card)) | |
1090 | break; | |
1091 | ||
1092 | packets_done++; | |
1093 | } | |
1094 | ||
1095 | if (packets_done < budget) { | |
1096 | napi_complete(napi); | |
1097 | gelic_card_rx_irq_on(card); | |
1098 | } | |
1099 | return packets_done; | |
1100 | } | |
1101 | /** | |
1102 | * gelic_net_change_mtu - changes the MTU of an interface | |
1103 | * @netdev: interface device structure | |
1104 | * @new_mtu: new MTU value | |
1105 | * | |
1106 | * returns 0 on success, <0 on failure | |
1107 | */ | |
1108 | int gelic_net_change_mtu(struct net_device *netdev, int new_mtu) | |
1109 | { | |
1110 | /* no need to re-alloc skbs or so -- the max mtu is about 2.3k | |
1111 | * and mtu is outbound only anyway */ | |
1112 | if ((new_mtu < GELIC_NET_MIN_MTU) || | |
1113 | (new_mtu > GELIC_NET_MAX_MTU)) { | |
1114 | return -EINVAL; | |
1115 | } | |
1116 | netdev->mtu = new_mtu; | |
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | /** | |
1121 | * gelic_card_interrupt - event handler for gelic_net | |
1122 | */ | |
1123 | static irqreturn_t gelic_card_interrupt(int irq, void *ptr) | |
1124 | { | |
1125 | unsigned long flags; | |
1126 | struct gelic_card *card = ptr; | |
1127 | u64 status; | |
1128 | ||
1129 | status = card->irq_status; | |
1130 | ||
1131 | if (!status) | |
1132 | return IRQ_NONE; | |
1133 | ||
1134 | status &= card->irq_mask; | |
1135 | ||
1136 | if (card->rx_dma_restart_required) { | |
1137 | card->rx_dma_restart_required = 0; | |
1138 | gelic_card_enable_rxdmac(card); | |
1139 | } | |
1140 | ||
1141 | if (status & GELIC_CARD_RXINT) { | |
1142 | gelic_card_rx_irq_off(card); | |
1143 | napi_schedule(&card->napi); | |
1144 | } | |
1145 | ||
1146 | if (status & GELIC_CARD_TXINT) { | |
1147 | spin_lock_irqsave(&card->tx_lock, flags); | |
1148 | card->tx_dma_progress = 0; | |
1149 | gelic_card_release_tx_chain(card, 0); | |
1150 | /* kick outstanding tx descriptor if any */ | |
1151 | gelic_card_kick_txdma(card, card->tx_chain.tail); | |
1152 | spin_unlock_irqrestore(&card->tx_lock, flags); | |
1153 | } | |
1154 | ||
1155 | /* ether port status changed */ | |
1156 | if (status & GELIC_CARD_PORT_STATUS_CHANGED) | |
1157 | gelic_card_get_ether_port_status(card, 1); | |
1158 | ||
1159 | #ifdef CONFIG_GELIC_WIRELESS | |
1160 | if (status & (GELIC_CARD_WLAN_EVENT_RECEIVED | | |
1161 | GELIC_CARD_WLAN_COMMAND_COMPLETED)) | |
1162 | gelic_wl_interrupt(card->netdev[GELIC_PORT_WIRELESS], status); | |
1163 | #endif | |
1164 | ||
1165 | return IRQ_HANDLED; | |
1166 | } | |
1167 | ||
1168 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1169 | /** | |
1170 | * gelic_net_poll_controller - artificial interrupt for netconsole etc. | |
1171 | * @netdev: interface device structure | |
1172 | * | |
1173 | * see Documentation/networking/netconsole.txt | |
1174 | */ | |
1175 | void gelic_net_poll_controller(struct net_device *netdev) | |
1176 | { | |
1177 | struct gelic_card *card = netdev_card(netdev); | |
1178 | ||
1179 | gelic_card_set_irq_mask(card, 0); | |
1180 | gelic_card_interrupt(netdev->irq, netdev); | |
1181 | gelic_card_set_irq_mask(card, card->irq_mask); | |
1182 | } | |
1183 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1184 | ||
1185 | /** | |
1186 | * gelic_net_open - called upon ifonfig up | |
1187 | * @netdev: interface device structure | |
1188 | * | |
1189 | * returns 0 on success, <0 on failure | |
1190 | * | |
1191 | * gelic_net_open allocates all the descriptors and memory needed for | |
1192 | * operation, sets up multicast list and enables interrupts | |
1193 | */ | |
1194 | int gelic_net_open(struct net_device *netdev) | |
1195 | { | |
1196 | struct gelic_card *card = netdev_card(netdev); | |
1197 | ||
1198 | dev_dbg(ctodev(card), " -> %s %p\n", __func__, netdev); | |
1199 | ||
1200 | gelic_card_up(card); | |
1201 | ||
1202 | netif_start_queue(netdev); | |
1203 | gelic_card_get_ether_port_status(card, 1); | |
1204 | ||
1205 | dev_dbg(ctodev(card), " <- %s\n", __func__); | |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | void gelic_net_get_drvinfo(struct net_device *netdev, | |
1210 | struct ethtool_drvinfo *info) | |
1211 | { | |
1212 | strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1); | |
1213 | strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1); | |
1214 | } | |
1215 | ||
1216 | static int gelic_ether_get_settings(struct net_device *netdev, | |
1217 | struct ethtool_cmd *cmd) | |
1218 | { | |
1219 | struct gelic_card *card = netdev_card(netdev); | |
1220 | ||
1221 | gelic_card_get_ether_port_status(card, 0); | |
1222 | ||
1223 | if (card->ether_port_status & GELIC_LV1_ETHER_FULL_DUPLEX) | |
1224 | cmd->duplex = DUPLEX_FULL; | |
1225 | else | |
1226 | cmd->duplex = DUPLEX_HALF; | |
1227 | ||
1228 | switch (card->ether_port_status & GELIC_LV1_ETHER_SPEED_MASK) { | |
1229 | case GELIC_LV1_ETHER_SPEED_10: | |
1230 | cmd->speed = SPEED_10; | |
1231 | break; | |
1232 | case GELIC_LV1_ETHER_SPEED_100: | |
1233 | cmd->speed = SPEED_100; | |
1234 | break; | |
1235 | case GELIC_LV1_ETHER_SPEED_1000: | |
1236 | cmd->speed = SPEED_1000; | |
1237 | break; | |
1238 | default: | |
1239 | pr_info("%s: speed unknown\n", __func__); | |
1240 | cmd->speed = SPEED_10; | |
1241 | break; | |
1242 | } | |
1243 | ||
1244 | cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg | | |
1245 | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | | |
1246 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | | |
1247 | SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; | |
1248 | cmd->advertising = cmd->supported; | |
1249 | cmd->autoneg = AUTONEG_ENABLE; /* always enabled */ | |
1250 | cmd->port = PORT_TP; | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | u32 gelic_net_get_rx_csum(struct net_device *netdev) | |
1256 | { | |
1257 | struct gelic_card *card = netdev_card(netdev); | |
1258 | ||
1259 | return card->rx_csum; | |
1260 | } | |
1261 | ||
1262 | int gelic_net_set_rx_csum(struct net_device *netdev, u32 data) | |
1263 | { | |
1264 | struct gelic_card *card = netdev_card(netdev); | |
1265 | ||
1266 | card->rx_csum = data; | |
1267 | return 0; | |
1268 | } | |
1269 | ||
1270 | static void gelic_net_get_wol(struct net_device *netdev, | |
1271 | struct ethtool_wolinfo *wol) | |
1272 | { | |
1273 | if (0 <= ps3_compare_firmware_version(2, 2, 0)) | |
1274 | wol->supported = WAKE_MAGIC; | |
1275 | else | |
1276 | wol->supported = 0; | |
1277 | ||
1278 | wol->wolopts = ps3_sys_manager_get_wol() ? wol->supported : 0; | |
1279 | memset(&wol->sopass, 0, sizeof(wol->sopass)); | |
1280 | } | |
1281 | static int gelic_net_set_wol(struct net_device *netdev, | |
1282 | struct ethtool_wolinfo *wol) | |
1283 | { | |
1284 | int status; | |
1285 | struct gelic_card *card; | |
1286 | u64 v1, v2; | |
1287 | ||
1288 | if (ps3_compare_firmware_version(2, 2, 0) < 0 || | |
1289 | !capable(CAP_NET_ADMIN)) | |
1290 | return -EPERM; | |
1291 | ||
1292 | if (wol->wolopts & ~WAKE_MAGIC) | |
1293 | return -EINVAL; | |
1294 | ||
1295 | card = netdev_card(netdev); | |
1296 | if (wol->wolopts & WAKE_MAGIC) { | |
1297 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1298 | GELIC_LV1_SET_WOL, | |
1299 | GELIC_LV1_WOL_MAGIC_PACKET, | |
1300 | 0, GELIC_LV1_WOL_MP_ENABLE, | |
1301 | &v1, &v2); | |
1302 | if (status) { | |
1303 | pr_info("%s: enabling WOL failed %d\n", __func__, | |
1304 | status); | |
1305 | status = -EIO; | |
1306 | goto done; | |
1307 | } | |
1308 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1309 | GELIC_LV1_SET_WOL, | |
1310 | GELIC_LV1_WOL_ADD_MATCH_ADDR, | |
1311 | 0, GELIC_LV1_WOL_MATCH_ALL, | |
1312 | &v1, &v2); | |
1313 | if (!status) | |
1314 | ps3_sys_manager_set_wol(1); | |
1315 | else { | |
1316 | pr_info("%s: enabling WOL filter failed %d\n", | |
1317 | __func__, status); | |
1318 | status = -EIO; | |
1319 | } | |
1320 | } else { | |
1321 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1322 | GELIC_LV1_SET_WOL, | |
1323 | GELIC_LV1_WOL_MAGIC_PACKET, | |
1324 | 0, GELIC_LV1_WOL_MP_DISABLE, | |
1325 | &v1, &v2); | |
1326 | if (status) { | |
1327 | pr_info("%s: disabling WOL failed %d\n", __func__, | |
1328 | status); | |
1329 | status = -EIO; | |
1330 | goto done; | |
1331 | } | |
1332 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1333 | GELIC_LV1_SET_WOL, | |
1334 | GELIC_LV1_WOL_DELETE_MATCH_ADDR, | |
1335 | 0, GELIC_LV1_WOL_MATCH_ALL, | |
1336 | &v1, &v2); | |
1337 | if (!status) | |
1338 | ps3_sys_manager_set_wol(0); | |
1339 | else { | |
1340 | pr_info("%s: removing WOL filter failed %d\n", | |
1341 | __func__, status); | |
1342 | status = -EIO; | |
1343 | } | |
1344 | } | |
1345 | done: | |
1346 | return status; | |
1347 | } | |
1348 | ||
1349 | static const struct ethtool_ops gelic_ether_ethtool_ops = { | |
1350 | .get_drvinfo = gelic_net_get_drvinfo, | |
1351 | .get_settings = gelic_ether_get_settings, | |
1352 | .get_link = ethtool_op_get_link, | |
1353 | .get_tx_csum = ethtool_op_get_tx_csum, | |
1354 | .set_tx_csum = ethtool_op_set_tx_csum, | |
1355 | .get_rx_csum = gelic_net_get_rx_csum, | |
1356 | .set_rx_csum = gelic_net_set_rx_csum, | |
1357 | .get_wol = gelic_net_get_wol, | |
1358 | .set_wol = gelic_net_set_wol, | |
1359 | }; | |
1360 | ||
1361 | /** | |
1362 | * gelic_net_tx_timeout_task - task scheduled by the watchdog timeout | |
1363 | * function (to be called not under interrupt status) | |
1364 | * @work: work is context of tx timout task | |
1365 | * | |
1366 | * called as task when tx hangs, resets interface (if interface is up) | |
1367 | */ | |
1368 | static void gelic_net_tx_timeout_task(struct work_struct *work) | |
1369 | { | |
1370 | struct gelic_card *card = | |
1371 | container_of(work, struct gelic_card, tx_timeout_task); | |
1372 | struct net_device *netdev = card->netdev[GELIC_PORT_ETHERNET]; | |
1373 | ||
1374 | dev_info(ctodev(card), "%s:Timed out. Restarting... \n", __func__); | |
1375 | ||
1376 | if (!(netdev->flags & IFF_UP)) | |
1377 | goto out; | |
1378 | ||
1379 | netif_device_detach(netdev); | |
1380 | gelic_net_stop(netdev); | |
1381 | ||
1382 | gelic_net_open(netdev); | |
1383 | netif_device_attach(netdev); | |
1384 | ||
1385 | out: | |
1386 | atomic_dec(&card->tx_timeout_task_counter); | |
1387 | } | |
1388 | ||
1389 | /** | |
1390 | * gelic_net_tx_timeout - called when the tx timeout watchdog kicks in. | |
1391 | * @netdev: interface device structure | |
1392 | * | |
1393 | * called, if tx hangs. Schedules a task that resets the interface | |
1394 | */ | |
1395 | void gelic_net_tx_timeout(struct net_device *netdev) | |
1396 | { | |
1397 | struct gelic_card *card; | |
1398 | ||
1399 | card = netdev_card(netdev); | |
1400 | atomic_inc(&card->tx_timeout_task_counter); | |
1401 | if (netdev->flags & IFF_UP) | |
1402 | schedule_work(&card->tx_timeout_task); | |
1403 | else | |
1404 | atomic_dec(&card->tx_timeout_task_counter); | |
1405 | } | |
1406 | ||
1407 | static const struct net_device_ops gelic_netdevice_ops = { | |
1408 | .ndo_open = gelic_net_open, | |
1409 | .ndo_stop = gelic_net_stop, | |
1410 | .ndo_start_xmit = gelic_net_xmit, | |
1411 | .ndo_set_multicast_list = gelic_net_set_multi, | |
1412 | .ndo_change_mtu = gelic_net_change_mtu, | |
1413 | .ndo_tx_timeout = gelic_net_tx_timeout, | |
1414 | .ndo_set_mac_address = eth_mac_addr, | |
1415 | .ndo_validate_addr = eth_validate_addr, | |
1416 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1417 | .ndo_poll_controller = gelic_net_poll_controller, | |
1418 | #endif | |
1419 | }; | |
1420 | ||
1421 | /** | |
1422 | * gelic_ether_setup_netdev_ops - initialization of net_device operations | |
1423 | * @netdev: net_device structure | |
1424 | * | |
1425 | * fills out function pointers in the net_device structure | |
1426 | */ | |
1427 | static void __devinit gelic_ether_setup_netdev_ops(struct net_device *netdev, | |
1428 | struct napi_struct *napi) | |
1429 | { | |
1430 | netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT; | |
1431 | /* NAPI */ | |
1432 | netif_napi_add(netdev, napi, | |
1433 | gelic_net_poll, GELIC_NET_NAPI_WEIGHT); | |
1434 | netdev->ethtool_ops = &gelic_ether_ethtool_ops; | |
1435 | netdev->netdev_ops = &gelic_netdevice_ops; | |
1436 | } | |
1437 | ||
1438 | /** | |
1439 | * gelic_ether_setup_netdev - initialization of net_device | |
1440 | * @netdev: net_device structure | |
1441 | * @card: card structure | |
1442 | * | |
1443 | * Returns 0 on success or <0 on failure | |
1444 | * | |
1445 | * gelic_ether_setup_netdev initializes the net_device structure | |
1446 | * and register it. | |
1447 | **/ | |
1448 | int __devinit gelic_net_setup_netdev(struct net_device *netdev, | |
1449 | struct gelic_card *card) | |
1450 | { | |
1451 | int status; | |
1452 | u64 v1, v2; | |
1453 | ||
1454 | netdev->features = NETIF_F_IP_CSUM; | |
1455 | ||
1456 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1457 | GELIC_LV1_GET_MAC_ADDRESS, | |
1458 | 0, 0, 0, &v1, &v2); | |
1459 | v1 <<= 16; | |
1460 | if (status || !is_valid_ether_addr((u8 *)&v1)) { | |
1461 | dev_info(ctodev(card), | |
1462 | "%s:lv1_net_control GET_MAC_ADDR failed %d\n", | |
1463 | __func__, status); | |
1464 | return -EINVAL; | |
1465 | } | |
1466 | memcpy(netdev->dev_addr, &v1, ETH_ALEN); | |
1467 | ||
1468 | if (card->vlan_required) { | |
1469 | netdev->hard_header_len += VLAN_HLEN; | |
1470 | /* | |
1471 | * As vlan is internally used, | |
1472 | * we can not receive vlan packets | |
1473 | */ | |
1474 | netdev->features |= NETIF_F_VLAN_CHALLENGED; | |
1475 | } | |
1476 | ||
1477 | status = register_netdev(netdev); | |
1478 | if (status) { | |
1479 | dev_err(ctodev(card), "%s:Couldn't register %s %d\n", | |
1480 | __func__, netdev->name, status); | |
1481 | return status; | |
1482 | } | |
1483 | dev_info(ctodev(card), "%s: MAC addr %pM\n", | |
1484 | netdev->name, netdev->dev_addr); | |
1485 | ||
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | /** | |
1490 | * gelic_alloc_card_net - allocates net_device and card structure | |
1491 | * | |
1492 | * returns the card structure or NULL in case of errors | |
1493 | * | |
1494 | * the card and net_device structures are linked to each other | |
1495 | */ | |
1496 | #define GELIC_ALIGN (32) | |
1497 | static struct gelic_card * __devinit gelic_alloc_card_net(struct net_device **netdev) | |
1498 | { | |
1499 | struct gelic_card *card; | |
1500 | struct gelic_port *port; | |
1501 | void *p; | |
1502 | size_t alloc_size; | |
1503 | /* | |
1504 | * gelic requires dma descriptor is 32 bytes aligned and | |
1505 | * the hypervisor requires irq_status is 8 bytes aligned. | |
1506 | */ | |
1507 | BUILD_BUG_ON(offsetof(struct gelic_card, irq_status) % 8); | |
1508 | BUILD_BUG_ON(offsetof(struct gelic_card, descr) % 32); | |
1509 | alloc_size = | |
1510 | sizeof(struct gelic_card) + | |
1511 | sizeof(struct gelic_descr) * GELIC_NET_RX_DESCRIPTORS + | |
1512 | sizeof(struct gelic_descr) * GELIC_NET_TX_DESCRIPTORS + | |
1513 | GELIC_ALIGN - 1; | |
1514 | ||
1515 | p = kzalloc(alloc_size, GFP_KERNEL); | |
1516 | if (!p) | |
1517 | return NULL; | |
1518 | card = PTR_ALIGN(p, GELIC_ALIGN); | |
1519 | card->unalign = p; | |
1520 | ||
1521 | /* | |
1522 | * alloc netdev | |
1523 | */ | |
1524 | *netdev = alloc_etherdev(sizeof(struct gelic_port)); | |
1525 | if (!netdev) { | |
1526 | kfree(card->unalign); | |
1527 | return NULL; | |
1528 | } | |
1529 | port = netdev_priv(*netdev); | |
1530 | ||
1531 | /* gelic_port */ | |
1532 | port->netdev = *netdev; | |
1533 | port->card = card; | |
1534 | port->type = GELIC_PORT_ETHERNET; | |
1535 | ||
1536 | /* gelic_card */ | |
1537 | card->netdev[GELIC_PORT_ETHERNET] = *netdev; | |
1538 | ||
1539 | INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task); | |
1540 | init_waitqueue_head(&card->waitq); | |
1541 | atomic_set(&card->tx_timeout_task_counter, 0); | |
1542 | mutex_init(&card->updown_lock); | |
1543 | atomic_set(&card->users, 0); | |
1544 | ||
1545 | return card; | |
1546 | } | |
1547 | ||
1548 | static void __devinit gelic_card_get_vlan_info(struct gelic_card *card) | |
1549 | { | |
1550 | u64 v1, v2; | |
1551 | int status; | |
1552 | unsigned int i; | |
1553 | struct { | |
1554 | int tx; | |
1555 | int rx; | |
1556 | } vlan_id_ix[2] = { | |
1557 | [GELIC_PORT_ETHERNET] = { | |
1558 | .tx = GELIC_LV1_VLAN_TX_ETHERNET, | |
1559 | .rx = GELIC_LV1_VLAN_RX_ETHERNET | |
1560 | }, | |
1561 | [GELIC_PORT_WIRELESS] = { | |
1562 | .tx = GELIC_LV1_VLAN_TX_WIRELESS, | |
1563 | .rx = GELIC_LV1_VLAN_RX_WIRELESS | |
1564 | } | |
1565 | }; | |
1566 | ||
1567 | for (i = 0; i < ARRAY_SIZE(vlan_id_ix); i++) { | |
1568 | /* tx tag */ | |
1569 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1570 | GELIC_LV1_GET_VLAN_ID, | |
1571 | vlan_id_ix[i].tx, | |
1572 | 0, 0, &v1, &v2); | |
1573 | if (status || !v1) { | |
1574 | if (status != LV1_NO_ENTRY) | |
1575 | dev_dbg(ctodev(card), | |
1576 | "get vlan id for tx(%d) failed(%d)\n", | |
1577 | vlan_id_ix[i].tx, status); | |
1578 | card->vlan[i].tx = 0; | |
1579 | card->vlan[i].rx = 0; | |
1580 | continue; | |
1581 | } | |
1582 | card->vlan[i].tx = (u16)v1; | |
1583 | ||
1584 | /* rx tag */ | |
1585 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1586 | GELIC_LV1_GET_VLAN_ID, | |
1587 | vlan_id_ix[i].rx, | |
1588 | 0, 0, &v1, &v2); | |
1589 | if (status || !v1) { | |
1590 | if (status != LV1_NO_ENTRY) | |
1591 | dev_info(ctodev(card), | |
1592 | "get vlan id for rx(%d) failed(%d)\n", | |
1593 | vlan_id_ix[i].rx, status); | |
1594 | card->vlan[i].tx = 0; | |
1595 | card->vlan[i].rx = 0; | |
1596 | continue; | |
1597 | } | |
1598 | card->vlan[i].rx = (u16)v1; | |
1599 | ||
1600 | dev_dbg(ctodev(card), "vlan_id[%d] tx=%02x rx=%02x\n", | |
1601 | i, card->vlan[i].tx, card->vlan[i].rx); | |
1602 | } | |
1603 | ||
1604 | if (card->vlan[GELIC_PORT_ETHERNET].tx) { | |
1605 | BUG_ON(!card->vlan[GELIC_PORT_WIRELESS].tx); | |
1606 | card->vlan_required = 1; | |
1607 | } else | |
1608 | card->vlan_required = 0; | |
1609 | ||
1610 | /* check wirelss capable firmware */ | |
1611 | if (ps3_compare_firmware_version(1, 6, 0) < 0) { | |
1612 | card->vlan[GELIC_PORT_WIRELESS].tx = 0; | |
1613 | card->vlan[GELIC_PORT_WIRELESS].rx = 0; | |
1614 | } | |
1615 | ||
1616 | dev_info(ctodev(card), "internal vlan %s\n", | |
1617 | card->vlan_required? "enabled" : "disabled"); | |
1618 | } | |
1619 | /** | |
1620 | * ps3_gelic_driver_probe - add a device to the control of this driver | |
1621 | */ | |
1622 | static int __devinit ps3_gelic_driver_probe(struct ps3_system_bus_device *dev) | |
1623 | { | |
1624 | struct gelic_card *card; | |
1625 | struct net_device *netdev; | |
1626 | int result; | |
1627 | ||
1628 | pr_debug("%s: called\n", __func__); | |
1629 | result = ps3_open_hv_device(dev); | |
1630 | ||
1631 | if (result) { | |
1632 | dev_dbg(&dev->core, "%s:ps3_open_hv_device failed\n", | |
1633 | __func__); | |
1634 | goto fail_open; | |
1635 | } | |
1636 | ||
1637 | result = ps3_dma_region_create(dev->d_region); | |
1638 | ||
1639 | if (result) { | |
1640 | dev_dbg(&dev->core, "%s:ps3_dma_region_create failed(%d)\n", | |
1641 | __func__, result); | |
1642 | BUG_ON("check region type"); | |
1643 | goto fail_dma_region; | |
1644 | } | |
1645 | ||
1646 | /* alloc card/netdevice */ | |
1647 | card = gelic_alloc_card_net(&netdev); | |
1648 | if (!card) { | |
1649 | dev_info(&dev->core, "%s:gelic_net_alloc_card failed\n", | |
1650 | __func__); | |
1651 | result = -ENOMEM; | |
1652 | goto fail_alloc_card; | |
1653 | } | |
1654 | ps3_system_bus_set_drvdata(dev, card); | |
1655 | card->dev = dev; | |
1656 | ||
1657 | /* get internal vlan info */ | |
1658 | gelic_card_get_vlan_info(card); | |
1659 | ||
1660 | /* setup interrupt */ | |
1661 | result = lv1_net_set_interrupt_status_indicator(bus_id(card), | |
1662 | dev_id(card), | |
1663 | ps3_mm_phys_to_lpar(__pa(&card->irq_status)), | |
1664 | 0); | |
1665 | ||
1666 | if (result) { | |
1667 | dev_dbg(&dev->core, | |
1668 | "%s:set_interrupt_status_indicator failed: %s\n", | |
1669 | __func__, ps3_result(result)); | |
1670 | result = -EIO; | |
1671 | goto fail_status_indicator; | |
1672 | } | |
1673 | ||
1674 | result = ps3_sb_event_receive_port_setup(dev, PS3_BINDING_CPU_ANY, | |
1675 | &card->irq); | |
1676 | ||
1677 | if (result) { | |
1678 | dev_info(ctodev(card), | |
1679 | "%s:gelic_net_open_device failed (%d)\n", | |
1680 | __func__, result); | |
1681 | result = -EPERM; | |
1682 | goto fail_alloc_irq; | |
1683 | } | |
1684 | result = request_irq(card->irq, gelic_card_interrupt, | |
1685 | IRQF_DISABLED, netdev->name, card); | |
1686 | ||
1687 | if (result) { | |
1688 | dev_info(ctodev(card), "%s:request_irq failed (%d)\n", | |
1689 | __func__, result); | |
1690 | goto fail_request_irq; | |
1691 | } | |
1692 | ||
1693 | /* setup card structure */ | |
1694 | card->irq_mask = GELIC_CARD_RXINT | GELIC_CARD_TXINT | | |
1695 | GELIC_CARD_PORT_STATUS_CHANGED; | |
1696 | card->rx_csum = GELIC_CARD_RX_CSUM_DEFAULT; | |
1697 | ||
1698 | ||
1699 | if (gelic_card_init_chain(card, &card->tx_chain, | |
1700 | card->descr, GELIC_NET_TX_DESCRIPTORS)) | |
1701 | goto fail_alloc_tx; | |
1702 | if (gelic_card_init_chain(card, &card->rx_chain, | |
1703 | card->descr + GELIC_NET_TX_DESCRIPTORS, | |
1704 | GELIC_NET_RX_DESCRIPTORS)) | |
1705 | goto fail_alloc_rx; | |
1706 | ||
1707 | /* head of chain */ | |
1708 | card->tx_top = card->tx_chain.head; | |
1709 | card->rx_top = card->rx_chain.head; | |
1710 | dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n", | |
1711 | card->rx_top, card->tx_top, sizeof(struct gelic_descr), | |
1712 | GELIC_NET_RX_DESCRIPTORS); | |
1713 | /* allocate rx skbs */ | |
1714 | if (gelic_card_alloc_rx_skbs(card)) | |
1715 | goto fail_alloc_skbs; | |
1716 | ||
1717 | spin_lock_init(&card->tx_lock); | |
1718 | card->tx_dma_progress = 0; | |
1719 | ||
1720 | /* setup net_device structure */ | |
1721 | netdev->irq = card->irq; | |
1722 | SET_NETDEV_DEV(netdev, &card->dev->core); | |
1723 | gelic_ether_setup_netdev_ops(netdev, &card->napi); | |
1724 | result = gelic_net_setup_netdev(netdev, card); | |
1725 | if (result) { | |
1726 | dev_dbg(&dev->core, "%s: setup_netdev failed %d", | |
1727 | __func__, result); | |
1728 | goto fail_setup_netdev; | |
1729 | } | |
1730 | ||
1731 | #ifdef CONFIG_GELIC_WIRELESS | |
1732 | if (gelic_wl_driver_probe(card)) { | |
1733 | dev_dbg(&dev->core, "%s: WL init failed\n", __func__); | |
1734 | goto fail_setup_netdev; | |
1735 | } | |
1736 | #endif | |
1737 | pr_debug("%s: done\n", __func__); | |
1738 | return 0; | |
1739 | ||
1740 | fail_setup_netdev: | |
1741 | fail_alloc_skbs: | |
1742 | gelic_card_free_chain(card, card->rx_chain.head); | |
1743 | fail_alloc_rx: | |
1744 | gelic_card_free_chain(card, card->tx_chain.head); | |
1745 | fail_alloc_tx: | |
1746 | free_irq(card->irq, card); | |
1747 | netdev->irq = NO_IRQ; | |
1748 | fail_request_irq: | |
1749 | ps3_sb_event_receive_port_destroy(dev, card->irq); | |
1750 | fail_alloc_irq: | |
1751 | lv1_net_set_interrupt_status_indicator(bus_id(card), | |
1752 | bus_id(card), | |
1753 | 0, 0); | |
1754 | fail_status_indicator: | |
1755 | ps3_system_bus_set_drvdata(dev, NULL); | |
1756 | kfree(netdev_card(netdev)->unalign); | |
1757 | free_netdev(netdev); | |
1758 | fail_alloc_card: | |
1759 | ps3_dma_region_free(dev->d_region); | |
1760 | fail_dma_region: | |
1761 | ps3_close_hv_device(dev); | |
1762 | fail_open: | |
1763 | return result; | |
1764 | } | |
1765 | ||
1766 | /** | |
1767 | * ps3_gelic_driver_remove - remove a device from the control of this driver | |
1768 | */ | |
1769 | ||
1770 | static int ps3_gelic_driver_remove(struct ps3_system_bus_device *dev) | |
1771 | { | |
1772 | struct gelic_card *card = ps3_system_bus_get_drvdata(dev); | |
1773 | struct net_device *netdev0; | |
1774 | pr_debug("%s: called\n", __func__); | |
1775 | ||
1776 | #ifdef CONFIG_GELIC_WIRELESS | |
1777 | gelic_wl_driver_remove(card); | |
1778 | #endif | |
1779 | /* stop interrupt */ | |
1780 | gelic_card_set_irq_mask(card, 0); | |
1781 | ||
1782 | /* turn off DMA, force end */ | |
1783 | gelic_card_disable_rxdmac(card); | |
1784 | gelic_card_disable_txdmac(card); | |
1785 | ||
1786 | /* release chains */ | |
1787 | gelic_card_release_tx_chain(card, 1); | |
1788 | gelic_card_release_rx_chain(card); | |
1789 | ||
1790 | gelic_card_free_chain(card, card->tx_top); | |
1791 | gelic_card_free_chain(card, card->rx_top); | |
1792 | ||
1793 | netdev0 = card->netdev[GELIC_PORT_ETHERNET]; | |
1794 | /* disconnect event port */ | |
1795 | free_irq(card->irq, card); | |
1796 | netdev0->irq = NO_IRQ; | |
1797 | ps3_sb_event_receive_port_destroy(card->dev, card->irq); | |
1798 | ||
1799 | wait_event(card->waitq, | |
1800 | atomic_read(&card->tx_timeout_task_counter) == 0); | |
1801 | ||
1802 | lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card), | |
1803 | 0 , 0); | |
1804 | ||
1805 | unregister_netdev(netdev0); | |
1806 | kfree(netdev_card(netdev0)->unalign); | |
1807 | free_netdev(netdev0); | |
1808 | ||
1809 | ps3_system_bus_set_drvdata(dev, NULL); | |
1810 | ||
1811 | ps3_dma_region_free(dev->d_region); | |
1812 | ||
1813 | ps3_close_hv_device(dev); | |
1814 | ||
1815 | pr_debug("%s: done\n", __func__); | |
1816 | return 0; | |
1817 | } | |
1818 | ||
1819 | static struct ps3_system_bus_driver ps3_gelic_driver = { | |
1820 | .match_id = PS3_MATCH_ID_GELIC, | |
1821 | .probe = ps3_gelic_driver_probe, | |
1822 | .remove = ps3_gelic_driver_remove, | |
1823 | .shutdown = ps3_gelic_driver_remove, | |
1824 | .core.name = "ps3_gelic_driver", | |
1825 | .core.owner = THIS_MODULE, | |
1826 | }; | |
1827 | ||
1828 | static int __init ps3_gelic_driver_init (void) | |
1829 | { | |
1830 | return firmware_has_feature(FW_FEATURE_PS3_LV1) | |
1831 | ? ps3_system_bus_driver_register(&ps3_gelic_driver) | |
1832 | : -ENODEV; | |
1833 | } | |
1834 | ||
1835 | static void __exit ps3_gelic_driver_exit (void) | |
1836 | { | |
1837 | ps3_system_bus_driver_unregister(&ps3_gelic_driver); | |
1838 | } | |
1839 | ||
1840 | module_init(ps3_gelic_driver_init); | |
1841 | module_exit(ps3_gelic_driver_exit); | |
1842 | ||
1843 | MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC); | |
1844 |