Commit | Line | Data |
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02c18891 MM |
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 | ||
50 | #define DRV_NAME "Gelic Network Driver" | |
51 | #define DRV_VERSION "1.0" | |
52 | ||
53 | MODULE_AUTHOR("SCE Inc."); | |
54 | MODULE_DESCRIPTION("Gelic Network driver"); | |
55 | MODULE_LICENSE("GPL"); | |
56 | ||
59e97327 | 57 | static inline struct device *ctodev(struct gelic_card *card) |
02c18891 MM |
58 | { |
59 | return &card->dev->core; | |
60 | } | |
59e97327 | 61 | static inline u64 bus_id(struct gelic_card *card) |
02c18891 MM |
62 | { |
63 | return card->dev->bus_id; | |
64 | } | |
59e97327 | 65 | static inline u64 dev_id(struct gelic_card *card) |
02c18891 MM |
66 | { |
67 | return card->dev->dev_id; | |
68 | } | |
69 | ||
70 | /* set irq_mask */ | |
59e97327 | 71 | static int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask) |
02c18891 MM |
72 | { |
73 | int status; | |
74 | ||
75 | status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card), | |
76 | mask, 0); | |
77 | if (status) | |
78 | dev_info(ctodev(card), | |
79 | "lv1_net_set_interrupt_mask failed %d\n", status); | |
80 | return status; | |
81 | } | |
59e97327 | 82 | static inline void gelic_card_rx_irq_on(struct gelic_card *card) |
02c18891 | 83 | { |
59e97327 | 84 | gelic_card_set_irq_mask(card, card->ghiintmask | GELIC_CARD_RXINT); |
02c18891 | 85 | } |
59e97327 | 86 | static inline void gelic_card_rx_irq_off(struct gelic_card *card) |
02c18891 | 87 | { |
59e97327 | 88 | gelic_card_set_irq_mask(card, card->ghiintmask & ~GELIC_CARD_RXINT); |
02c18891 MM |
89 | } |
90 | /** | |
59e97327 | 91 | * gelic_descr_get_status -- returns the status of a descriptor |
02c18891 MM |
92 | * @descr: descriptor to look at |
93 | * | |
94 | * returns the status as in the dmac_cmd_status field of the descriptor | |
95 | */ | |
59e97327 MM |
96 | static enum gelic_descr_dma_status |
97 | gelic_descr_get_status(struct gelic_descr *descr) | |
02c18891 | 98 | { |
59e97327 | 99 | return be32_to_cpu(descr->dmac_cmd_status) & GELIC_DESCR_DMA_STAT_MASK; |
02c18891 MM |
100 | } |
101 | ||
102 | /** | |
59e97327 | 103 | * gelic_descr_set_status -- sets the status of a descriptor |
02c18891 MM |
104 | * @descr: descriptor to change |
105 | * @status: status to set in the descriptor | |
106 | * | |
107 | * changes the status to the specified value. Doesn't change other bits | |
108 | * in the status | |
109 | */ | |
59e97327 MM |
110 | static void gelic_descr_set_status(struct gelic_descr *descr, |
111 | enum gelic_descr_dma_status status) | |
02c18891 | 112 | { |
59e97327 MM |
113 | descr->dmac_cmd_status = cpu_to_be32(status | |
114 | (be32_to_cpu(descr->dmac_cmd_status) & | |
115 | ~GELIC_DESCR_DMA_STAT_MASK)); | |
02c18891 MM |
116 | /* |
117 | * dma_cmd_status field is used to indicate whether the descriptor | |
118 | * is valid or not. | |
119 | * Usually caller of this function wants to inform that to the | |
120 | * hardware, so we assure here the hardware sees the change. | |
121 | */ | |
122 | wmb(); | |
123 | } | |
124 | ||
125 | /** | |
59e97327 | 126 | * gelic_card_free_chain - free descriptor chain |
02c18891 MM |
127 | * @card: card structure |
128 | * @descr_in: address of desc | |
129 | */ | |
59e97327 MM |
130 | static void gelic_card_free_chain(struct gelic_card *card, |
131 | struct gelic_descr *descr_in) | |
02c18891 | 132 | { |
59e97327 | 133 | struct gelic_descr *descr; |
02c18891 MM |
134 | |
135 | for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) { | |
136 | dma_unmap_single(ctodev(card), descr->bus_addr, | |
59e97327 | 137 | GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); |
02c18891 MM |
138 | descr->bus_addr = 0; |
139 | } | |
140 | } | |
141 | ||
142 | /** | |
59e97327 | 143 | * gelic_card_init_chain - links descriptor chain |
02c18891 MM |
144 | * @card: card structure |
145 | * @chain: address of chain | |
146 | * @start_descr: address of descriptor array | |
147 | * @no: number of descriptors | |
148 | * | |
149 | * we manage a circular list that mirrors the hardware structure, | |
150 | * except that the hardware uses bus addresses. | |
151 | * | |
152 | * returns 0 on success, <0 on failure | |
153 | */ | |
59e97327 MM |
154 | static int gelic_card_init_chain(struct gelic_card *card, |
155 | struct gelic_descr_chain *chain, | |
156 | struct gelic_descr *start_descr, int no) | |
02c18891 MM |
157 | { |
158 | int i; | |
59e97327 | 159 | struct gelic_descr *descr; |
02c18891 MM |
160 | |
161 | descr = start_descr; | |
162 | memset(descr, 0, sizeof(*descr) * no); | |
163 | ||
164 | /* set up the hardware pointers in each descriptor */ | |
165 | for (i = 0; i < no; i++, descr++) { | |
59e97327 | 166 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
167 | descr->bus_addr = |
168 | dma_map_single(ctodev(card), descr, | |
59e97327 | 169 | GELIC_DESCR_SIZE, |
02c18891 MM |
170 | DMA_BIDIRECTIONAL); |
171 | ||
172 | if (!descr->bus_addr) | |
173 | goto iommu_error; | |
174 | ||
175 | descr->next = descr + 1; | |
176 | descr->prev = descr - 1; | |
177 | } | |
178 | /* make them as ring */ | |
179 | (descr - 1)->next = start_descr; | |
180 | start_descr->prev = (descr - 1); | |
181 | ||
182 | /* chain bus addr of hw descriptor */ | |
183 | descr = start_descr; | |
184 | for (i = 0; i < no; i++, descr++) { | |
100e1d89 | 185 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); |
02c18891 MM |
186 | } |
187 | ||
188 | chain->head = start_descr; | |
189 | chain->tail = start_descr; | |
190 | ||
191 | /* do not chain last hw descriptor */ | |
192 | (descr - 1)->next_descr_addr = 0; | |
193 | ||
194 | return 0; | |
195 | ||
196 | iommu_error: | |
197 | for (i--, descr--; 0 <= i; i--, descr--) | |
198 | if (descr->bus_addr) | |
199 | dma_unmap_single(ctodev(card), descr->bus_addr, | |
59e97327 | 200 | GELIC_DESCR_SIZE, |
02c18891 MM |
201 | DMA_BIDIRECTIONAL); |
202 | return -ENOMEM; | |
203 | } | |
204 | ||
205 | /** | |
59e97327 | 206 | * gelic_descr_prepare_rx - reinitializes a rx descriptor |
02c18891 MM |
207 | * @card: card structure |
208 | * @descr: descriptor to re-init | |
209 | * | |
210 | * return 0 on succes, <0 on failure | |
211 | * | |
212 | * allocates a new rx skb, iommu-maps it and attaches it to the descriptor. | |
213 | * Activate the descriptor state-wise | |
214 | */ | |
59e97327 MM |
215 | static int gelic_descr_prepare_rx(struct gelic_card *card, |
216 | struct gelic_descr *descr) | |
02c18891 MM |
217 | { |
218 | int offset; | |
219 | unsigned int bufsize; | |
220 | ||
59e97327 | 221 | if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE) |
02c18891 | 222 | dev_info(ctodev(card), "%s: ERROR status \n", __func__); |
59e97327 | 223 | |
02c18891 MM |
224 | /* we need to round up the buffer size to a multiple of 128 */ |
225 | bufsize = ALIGN(GELIC_NET_MAX_MTU, GELIC_NET_RXBUF_ALIGN); | |
226 | ||
227 | /* and we need to have it 128 byte aligned, therefore we allocate a | |
228 | * bit more */ | |
229 | descr->skb = netdev_alloc_skb(card->netdev, | |
230 | bufsize + GELIC_NET_RXBUF_ALIGN - 1); | |
231 | if (!descr->skb) { | |
232 | descr->buf_addr = 0; /* tell DMAC don't touch memory */ | |
233 | dev_info(ctodev(card), | |
234 | "%s:allocate skb failed !!\n", __func__); | |
235 | return -ENOMEM; | |
236 | } | |
100e1d89 | 237 | descr->buf_size = cpu_to_be32(bufsize); |
02c18891 MM |
238 | descr->dmac_cmd_status = 0; |
239 | descr->result_size = 0; | |
240 | descr->valid_size = 0; | |
241 | descr->data_error = 0; | |
242 | ||
243 | offset = ((unsigned long)descr->skb->data) & | |
244 | (GELIC_NET_RXBUF_ALIGN - 1); | |
245 | if (offset) | |
246 | skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset); | |
247 | /* io-mmu-map the skb */ | |
100e1d89 MM |
248 | descr->buf_addr = cpu_to_be32(dma_map_single(ctodev(card), |
249 | descr->skb->data, | |
250 | GELIC_NET_MAX_MTU, | |
251 | DMA_FROM_DEVICE)); | |
02c18891 MM |
252 | if (!descr->buf_addr) { |
253 | dev_kfree_skb_any(descr->skb); | |
254 | descr->skb = NULL; | |
255 | dev_info(ctodev(card), | |
256 | "%s:Could not iommu-map rx buffer\n", __func__); | |
59e97327 | 257 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
258 | return -ENOMEM; |
259 | } else { | |
59e97327 | 260 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); |
02c18891 MM |
261 | return 0; |
262 | } | |
263 | } | |
264 | ||
265 | /** | |
59e97327 | 266 | * gelic_card_release_rx_chain - free all skb of rx descr |
02c18891 MM |
267 | * @card: card structure |
268 | * | |
269 | */ | |
59e97327 | 270 | static void gelic_card_release_rx_chain(struct gelic_card *card) |
02c18891 | 271 | { |
59e97327 | 272 | struct gelic_descr *descr = card->rx_chain.head; |
02c18891 MM |
273 | |
274 | do { | |
275 | if (descr->skb) { | |
276 | dma_unmap_single(ctodev(card), | |
100e1d89 | 277 | be32_to_cpu(descr->buf_addr), |
02c18891 MM |
278 | descr->skb->len, |
279 | DMA_FROM_DEVICE); | |
280 | descr->buf_addr = 0; | |
281 | dev_kfree_skb_any(descr->skb); | |
282 | descr->skb = NULL; | |
59e97327 MM |
283 | gelic_descr_set_status(descr, |
284 | GELIC_DESCR_DMA_NOT_IN_USE); | |
02c18891 MM |
285 | } |
286 | descr = descr->next; | |
287 | } while (descr != card->rx_chain.head); | |
288 | } | |
289 | ||
290 | /** | |
59e97327 | 291 | * gelic_card_fill_rx_chain - fills descriptors/skbs in the rx chains |
02c18891 MM |
292 | * @card: card structure |
293 | * | |
294 | * fills all descriptors in the rx chain: allocates skbs | |
295 | * and iommu-maps them. | |
59e97327 | 296 | * returns 0 on success, < 0 on failure |
02c18891 | 297 | */ |
59e97327 | 298 | static int gelic_card_fill_rx_chain(struct gelic_card *card) |
02c18891 | 299 | { |
59e97327 | 300 | struct gelic_descr *descr = card->rx_chain.head; |
02c18891 MM |
301 | int ret; |
302 | ||
303 | do { | |
304 | if (!descr->skb) { | |
59e97327 | 305 | ret = gelic_descr_prepare_rx(card, descr); |
02c18891 MM |
306 | if (ret) |
307 | goto rewind; | |
308 | } | |
309 | descr = descr->next; | |
310 | } while (descr != card->rx_chain.head); | |
311 | ||
312 | return 0; | |
313 | rewind: | |
59e97327 | 314 | gelic_card_release_rx_chain(card); |
02c18891 MM |
315 | return ret; |
316 | } | |
317 | ||
318 | /** | |
59e97327 | 319 | * gelic_card_alloc_rx_skbs - allocates rx skbs in rx descriptor chains |
02c18891 MM |
320 | * @card: card structure |
321 | * | |
59e97327 | 322 | * returns 0 on success, < 0 on failure |
02c18891 | 323 | */ |
59e97327 | 324 | static int gelic_card_alloc_rx_skbs(struct gelic_card *card) |
02c18891 | 325 | { |
59e97327 | 326 | struct gelic_descr_chain *chain; |
02c18891 MM |
327 | int ret; |
328 | chain = &card->rx_chain; | |
59e97327 | 329 | ret = gelic_card_fill_rx_chain(card); |
02c18891 MM |
330 | chain->head = card->rx_top->prev; /* point to the last */ |
331 | return ret; | |
332 | } | |
333 | ||
334 | /** | |
59e97327 | 335 | * gelic_descr_release_tx - processes a used tx descriptor |
02c18891 MM |
336 | * @card: card structure |
337 | * @descr: descriptor to release | |
338 | * | |
339 | * releases a used tx descriptor (unmapping, freeing of skb) | |
340 | */ | |
59e97327 MM |
341 | static void gelic_descr_release_tx(struct gelic_card *card, |
342 | struct gelic_descr *descr) | |
02c18891 | 343 | { |
173261ed | 344 | struct sk_buff *skb = descr->skb; |
02c18891 | 345 | |
59e97327 | 346 | #ifdef DEBUG |
100e1d89 | 347 | BUG_ON(!(be32_to_cpu(descr->data_status) & |
59e97327 MM |
348 | (1 << GELIC_DESCR_TX_DMA_FRAME_TAIL))); |
349 | #endif | |
100e1d89 MM |
350 | dma_unmap_single(ctodev(card), |
351 | be32_to_cpu(descr->buf_addr), skb->len, DMA_TO_DEVICE); | |
173261ed | 352 | dev_kfree_skb_any(skb); |
02c18891 MM |
353 | |
354 | descr->buf_addr = 0; | |
355 | descr->buf_size = 0; | |
356 | descr->next_descr_addr = 0; | |
357 | descr->result_size = 0; | |
358 | descr->valid_size = 0; | |
359 | descr->data_status = 0; | |
360 | descr->data_error = 0; | |
361 | descr->skb = NULL; | |
362 | ||
363 | /* set descr status */ | |
59e97327 | 364 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
365 | } |
366 | ||
367 | /** | |
59e97327 | 368 | * gelic_card_release_tx_chain - processes sent tx descriptors |
02c18891 MM |
369 | * @card: adapter structure |
370 | * @stop: net_stop sequence | |
371 | * | |
372 | * releases the tx descriptors that gelic has finished with | |
373 | */ | |
59e97327 | 374 | static void gelic_card_release_tx_chain(struct gelic_card *card, int stop) |
02c18891 | 375 | { |
59e97327 MM |
376 | struct gelic_descr_chain *tx_chain; |
377 | enum gelic_descr_dma_status status; | |
02c18891 MM |
378 | int release = 0; |
379 | ||
380 | for (tx_chain = &card->tx_chain; | |
381 | tx_chain->head != tx_chain->tail && tx_chain->tail; | |
382 | tx_chain->tail = tx_chain->tail->next) { | |
59e97327 | 383 | status = gelic_descr_get_status(tx_chain->tail); |
02c18891 | 384 | switch (status) { |
59e97327 MM |
385 | case GELIC_DESCR_DMA_RESPONSE_ERROR: |
386 | case GELIC_DESCR_DMA_PROTECTION_ERROR: | |
387 | case GELIC_DESCR_DMA_FORCE_END: | |
02c18891 MM |
388 | if (printk_ratelimit()) |
389 | dev_info(ctodev(card), | |
390 | "%s: forcing end of tx descriptor " \ | |
391 | "with status %x\n", | |
392 | __func__, status); | |
92548d60 | 393 | card->netdev->stats.tx_dropped++; |
02c18891 MM |
394 | break; |
395 | ||
59e97327 | 396 | case GELIC_DESCR_DMA_COMPLETE: |
48544cc2 | 397 | if (tx_chain->tail->skb) { |
92548d60 MM |
398 | card->netdev->stats.tx_packets++; |
399 | card->netdev->stats.tx_bytes += | |
48544cc2 MM |
400 | tx_chain->tail->skb->len; |
401 | } | |
02c18891 MM |
402 | break; |
403 | ||
59e97327 | 404 | case GELIC_DESCR_DMA_CARDOWNED: |
02c18891 MM |
405 | /* pending tx request */ |
406 | default: | |
59e97327 | 407 | /* any other value (== GELIC_DESCR_DMA_NOT_IN_USE) */ |
48544cc2 MM |
408 | if (!stop) |
409 | goto out; | |
02c18891 | 410 | } |
59e97327 | 411 | gelic_descr_release_tx(card, tx_chain->tail); |
48544cc2 | 412 | release ++; |
02c18891 MM |
413 | } |
414 | out: | |
173261ed | 415 | if (!stop && release) |
02c18891 MM |
416 | netif_wake_queue(card->netdev); |
417 | } | |
418 | ||
419 | /** | |
420 | * gelic_net_set_multi - sets multicast addresses and promisc flags | |
421 | * @netdev: interface device structure | |
422 | * | |
423 | * gelic_net_set_multi configures multicast addresses as needed for the | |
424 | * netdev interface. It also sets up multicast, allmulti and promisc | |
425 | * flags appropriately | |
426 | */ | |
427 | static void gelic_net_set_multi(struct net_device *netdev) | |
428 | { | |
59e97327 | 429 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 MM |
430 | struct dev_mc_list *mc; |
431 | unsigned int i; | |
432 | uint8_t *p; | |
433 | u64 addr; | |
434 | int status; | |
435 | ||
436 | /* clear all multicast address */ | |
437 | status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card), | |
438 | 0, 1); | |
439 | if (status) | |
440 | dev_err(ctodev(card), | |
441 | "lv1_net_remove_multicast_address failed %d\n", | |
442 | status); | |
443 | /* set broadcast address */ | |
444 | status = lv1_net_add_multicast_address(bus_id(card), dev_id(card), | |
445 | GELIC_NET_BROADCAST_ADDR, 0); | |
446 | if (status) | |
447 | dev_err(ctodev(card), | |
448 | "lv1_net_add_multicast_address failed, %d\n", | |
449 | status); | |
450 | ||
451 | if (netdev->flags & IFF_ALLMULTI | |
452 | || netdev->mc_count > GELIC_NET_MC_COUNT_MAX) { /* list max */ | |
453 | status = lv1_net_add_multicast_address(bus_id(card), | |
454 | dev_id(card), | |
455 | 0, 1); | |
456 | if (status) | |
457 | dev_err(ctodev(card), | |
458 | "lv1_net_add_multicast_address failed, %d\n", | |
459 | status); | |
460 | return; | |
461 | } | |
462 | ||
463 | /* set multicast address */ | |
464 | for (mc = netdev->mc_list; mc; mc = mc->next) { | |
465 | addr = 0; | |
466 | p = mc->dmi_addr; | |
467 | for (i = 0; i < ETH_ALEN; i++) { | |
468 | addr <<= 8; | |
469 | addr |= *p++; | |
470 | } | |
471 | status = lv1_net_add_multicast_address(bus_id(card), | |
472 | dev_id(card), | |
473 | addr, 0); | |
474 | if (status) | |
475 | dev_err(ctodev(card), | |
476 | "lv1_net_add_multicast_address failed, %d\n", | |
477 | status); | |
478 | } | |
479 | } | |
480 | ||
481 | /** | |
59e97327 | 482 | * gelic_card_enable_rxdmac - enables the receive DMA controller |
02c18891 MM |
483 | * @card: card structure |
484 | * | |
59e97327 | 485 | * gelic_card_enable_rxdmac enables the DMA controller by setting RX_DMA_EN |
02c18891 MM |
486 | * in the GDADMACCNTR register |
487 | */ | |
59e97327 | 488 | static inline void gelic_card_enable_rxdmac(struct gelic_card *card) |
02c18891 MM |
489 | { |
490 | int status; | |
491 | ||
492 | status = lv1_net_start_rx_dma(bus_id(card), dev_id(card), | |
493 | card->rx_chain.tail->bus_addr, 0); | |
494 | if (status) | |
495 | dev_info(ctodev(card), | |
496 | "lv1_net_start_rx_dma failed, status=%d\n", status); | |
497 | } | |
498 | ||
499 | /** | |
59e97327 | 500 | * gelic_card_disable_rxdmac - disables the receive DMA controller |
02c18891 MM |
501 | * @card: card structure |
502 | * | |
59e97327 | 503 | * gelic_card_disable_rxdmac terminates processing on the DMA controller by |
02c18891 MM |
504 | * turing off DMA and issueing a force end |
505 | */ | |
59e97327 | 506 | static inline void gelic_card_disable_rxdmac(struct gelic_card *card) |
02c18891 MM |
507 | { |
508 | int status; | |
509 | ||
510 | /* this hvc blocks until the DMA in progress really stopped */ | |
511 | status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card), 0); | |
512 | if (status) | |
513 | dev_err(ctodev(card), | |
514 | "lv1_net_stop_rx_dma faild, %d\n", status); | |
515 | } | |
516 | ||
517 | /** | |
59e97327 | 518 | * gelic_card_disable_txdmac - disables the transmit DMA controller |
02c18891 MM |
519 | * @card: card structure |
520 | * | |
59e97327 | 521 | * gelic_card_disable_txdmac terminates processing on the DMA controller by |
02c18891 MM |
522 | * turing off DMA and issueing a force end |
523 | */ | |
59e97327 | 524 | static inline void gelic_card_disable_txdmac(struct gelic_card *card) |
02c18891 MM |
525 | { |
526 | int status; | |
527 | ||
528 | /* this hvc blocks until the DMA in progress really stopped */ | |
529 | status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card), 0); | |
530 | if (status) | |
531 | dev_err(ctodev(card), | |
532 | "lv1_net_stop_tx_dma faild, status=%d\n", status); | |
533 | } | |
534 | ||
535 | /** | |
536 | * gelic_net_stop - called upon ifconfig down | |
537 | * @netdev: interface device structure | |
538 | * | |
539 | * always returns 0 | |
540 | */ | |
541 | static int gelic_net_stop(struct net_device *netdev) | |
542 | { | |
59e97327 | 543 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 | 544 | |
bea3348e | 545 | napi_disable(&card->napi); |
02c18891 MM |
546 | netif_stop_queue(netdev); |
547 | ||
548 | /* turn off DMA, force end */ | |
59e97327 MM |
549 | gelic_card_disable_rxdmac(card); |
550 | gelic_card_disable_txdmac(card); | |
02c18891 | 551 | |
59e97327 | 552 | gelic_card_set_irq_mask(card, 0); |
02c18891 MM |
553 | |
554 | /* disconnect event port */ | |
555 | free_irq(card->netdev->irq, card->netdev); | |
556 | ps3_sb_event_receive_port_destroy(card->dev, card->netdev->irq); | |
557 | card->netdev->irq = NO_IRQ; | |
558 | ||
559 | netif_carrier_off(netdev); | |
560 | ||
561 | /* release chains */ | |
59e97327 MM |
562 | gelic_card_release_tx_chain(card, 1); |
563 | gelic_card_release_rx_chain(card); | |
02c18891 | 564 | |
59e97327 MM |
565 | gelic_card_free_chain(card, card->tx_top); |
566 | gelic_card_free_chain(card, card->rx_top); | |
02c18891 MM |
567 | |
568 | return 0; | |
569 | } | |
570 | ||
571 | /** | |
59e97327 | 572 | * gelic_card_get_next_tx_descr - returns the next available tx descriptor |
02c18891 MM |
573 | * @card: device structure to get descriptor from |
574 | * | |
575 | * returns the address of the next descriptor, or NULL if not available. | |
576 | */ | |
59e97327 MM |
577 | static struct gelic_descr * |
578 | gelic_card_get_next_tx_descr(struct gelic_card *card) | |
02c18891 MM |
579 | { |
580 | if (!card->tx_chain.head) | |
581 | return NULL; | |
173261ed | 582 | /* see if the next descriptor is free */ |
02c18891 | 583 | if (card->tx_chain.tail != card->tx_chain.head->next && |
59e97327 MM |
584 | gelic_descr_get_status(card->tx_chain.head) == |
585 | GELIC_DESCR_DMA_NOT_IN_USE) | |
02c18891 MM |
586 | return card->tx_chain.head; |
587 | else | |
588 | return NULL; | |
589 | ||
590 | } | |
591 | ||
592 | /** | |
59e97327 | 593 | * gelic_descr_set_tx_cmdstat - sets the tx descriptor command field |
02c18891 MM |
594 | * @descr: descriptor structure to fill out |
595 | * @skb: packet to consider | |
02c18891 MM |
596 | * |
597 | * fills out the command and status field of the descriptor structure, | |
598 | * depending on hardware checksum settings. This function assumes a wmb() | |
599 | * has executed before. | |
600 | */ | |
59e97327 MM |
601 | static void gelic_descr_set_tx_cmdstat(struct gelic_descr *descr, |
602 | struct sk_buff *skb) | |
02c18891 | 603 | { |
02c18891 | 604 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
100e1d89 | 605 | descr->dmac_cmd_status = |
59e97327 MM |
606 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | |
607 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
608 | else { |
609 | /* is packet ip? | |
610 | * if yes: tcp? udp? */ | |
611 | if (skb->protocol == htons(ETH_P_IP)) { | |
612 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
613 | descr->dmac_cmd_status = | |
59e97327 MM |
614 | cpu_to_be32(GELIC_DESCR_DMA_CMD_TCP_CHKSUM | |
615 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
173261ed | 616 | |
02c18891 MM |
617 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) |
618 | descr->dmac_cmd_status = | |
59e97327 MM |
619 | cpu_to_be32(GELIC_DESCR_DMA_CMD_UDP_CHKSUM | |
620 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
621 | else /* |
622 | * the stack should checksum non-tcp and non-udp | |
623 | * packets on his own: NETIF_F_IP_CSUM | |
624 | */ | |
625 | descr->dmac_cmd_status = | |
59e97327 MM |
626 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | |
627 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
628 | } |
629 | } | |
630 | } | |
631 | ||
173261ed MM |
632 | static inline struct sk_buff *gelic_put_vlan_tag(struct sk_buff *skb, |
633 | unsigned short tag) | |
634 | { | |
635 | struct vlan_ethhdr *veth; | |
636 | static unsigned int c; | |
637 | ||
638 | if (skb_headroom(skb) < VLAN_HLEN) { | |
639 | struct sk_buff *sk_tmp = skb; | |
640 | pr_debug("%s: hd=%d c=%ud\n", __func__, skb_headroom(skb), c); | |
641 | skb = skb_realloc_headroom(sk_tmp, VLAN_HLEN); | |
642 | if (!skb) | |
643 | return NULL; | |
644 | dev_kfree_skb_any(sk_tmp); | |
645 | } | |
646 | veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN); | |
647 | ||
648 | /* Move the mac addresses to the top of buffer */ | |
649 | memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN); | |
650 | ||
651 | veth->h_vlan_proto = __constant_htons(ETH_P_8021Q); | |
652 | veth->h_vlan_TCI = htons(tag); | |
653 | ||
654 | return skb; | |
655 | } | |
656 | ||
02c18891 | 657 | /** |
59e97327 | 658 | * gelic_descr_prepare_tx - get dma address of skb_data |
02c18891 MM |
659 | * @card: card structure |
660 | * @descr: descriptor structure | |
661 | * @skb: packet to use | |
662 | * | |
663 | * returns 0 on success, <0 on failure. | |
664 | * | |
665 | */ | |
59e97327 MM |
666 | static int gelic_descr_prepare_tx(struct gelic_card *card, |
667 | struct gelic_descr *descr, | |
668 | struct sk_buff *skb) | |
02c18891 | 669 | { |
173261ed | 670 | dma_addr_t buf; |
02c18891 | 671 | |
02c18891 | 672 | if (card->vlan_index != -1) { |
173261ed MM |
673 | struct sk_buff *skb_tmp; |
674 | skb_tmp = gelic_put_vlan_tag(skb, | |
675 | card->vlan_id[card->vlan_index]); | |
676 | if (!skb_tmp) | |
677 | return -ENOMEM; | |
678 | skb = skb_tmp; | |
02c18891 MM |
679 | } |
680 | ||
173261ed | 681 | buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE); |
02c18891 | 682 | |
173261ed | 683 | if (!buf) { |
02c18891 MM |
684 | dev_err(ctodev(card), |
685 | "dma map 2 failed (%p, %i). Dropping packet\n", | |
173261ed | 686 | skb->data, skb->len); |
02c18891 MM |
687 | return -ENOMEM; |
688 | } | |
689 | ||
100e1d89 MM |
690 | descr->buf_addr = cpu_to_be32(buf); |
691 | descr->buf_size = cpu_to_be32(skb->len); | |
173261ed | 692 | descr->skb = skb; |
02c18891 | 693 | descr->data_status = 0; |
173261ed | 694 | descr->next_descr_addr = 0; /* terminate hw descr */ |
59e97327 | 695 | gelic_descr_set_tx_cmdstat(descr, skb); |
48544cc2 MM |
696 | |
697 | /* bump free descriptor pointer */ | |
173261ed | 698 | card->tx_chain.head = descr->next; |
02c18891 MM |
699 | return 0; |
700 | } | |
701 | ||
702 | /** | |
59e97327 | 703 | * gelic_card_kick_txdma - enables TX DMA processing |
02c18891 MM |
704 | * @card: card structure |
705 | * @descr: descriptor address to enable TX processing at | |
706 | * | |
707 | */ | |
59e97327 MM |
708 | static int gelic_card_kick_txdma(struct gelic_card *card, |
709 | struct gelic_descr *descr) | |
02c18891 | 710 | { |
48544cc2 | 711 | int status = 0; |
02c18891 MM |
712 | |
713 | if (card->tx_dma_progress) | |
714 | return 0; | |
715 | ||
59e97327 | 716 | if (gelic_descr_get_status(descr) == GELIC_DESCR_DMA_CARDOWNED) { |
02c18891 | 717 | card->tx_dma_progress = 1; |
dc029ad9 MM |
718 | status = lv1_net_start_tx_dma(bus_id(card), dev_id(card), |
719 | descr->bus_addr, 0); | |
720 | if (status) | |
02c18891 | 721 | dev_info(ctodev(card), "lv1_net_start_txdma failed," \ |
dc029ad9 | 722 | "status=%d\n", status); |
02c18891 MM |
723 | } |
724 | return status; | |
725 | } | |
726 | ||
727 | /** | |
728 | * gelic_net_xmit - transmits a frame over the device | |
729 | * @skb: packet to send out | |
730 | * @netdev: interface device structure | |
731 | * | |
732 | * returns 0 on success, <0 on failure | |
733 | */ | |
734 | static int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev) | |
735 | { | |
59e97327 MM |
736 | struct gelic_card *card = netdev_priv(netdev); |
737 | struct gelic_descr *descr; | |
02c18891 MM |
738 | int result; |
739 | unsigned long flags; | |
740 | ||
741 | spin_lock_irqsave(&card->tx_dma_lock, flags); | |
742 | ||
59e97327 | 743 | gelic_card_release_tx_chain(card, 0); |
48544cc2 | 744 | |
59e97327 | 745 | descr = gelic_card_get_next_tx_descr(card); |
02c18891 | 746 | if (!descr) { |
48544cc2 MM |
747 | /* |
748 | * no more descriptors free | |
749 | */ | |
02c18891 MM |
750 | netif_stop_queue(netdev); |
751 | spin_unlock_irqrestore(&card->tx_dma_lock, flags); | |
752 | return NETDEV_TX_BUSY; | |
753 | } | |
02c18891 | 754 | |
59e97327 | 755 | result = gelic_descr_prepare_tx(card, descr, skb); |
48544cc2 MM |
756 | if (result) { |
757 | /* | |
758 | * DMA map failed. As chanses are that failure | |
759 | * would continue, just release skb and return | |
760 | */ | |
92548d60 | 761 | card->netdev->stats.tx_dropped++; |
48544cc2 MM |
762 | dev_kfree_skb_any(skb); |
763 | spin_unlock_irqrestore(&card->tx_dma_lock, flags); | |
764 | return NETDEV_TX_OK; | |
765 | } | |
766 | /* | |
767 | * link this prepared descriptor to previous one | |
768 | * to achieve high performance | |
769 | */ | |
100e1d89 | 770 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); |
02c18891 MM |
771 | /* |
772 | * as hardware descriptor is modified in the above lines, | |
773 | * ensure that the hardware sees it | |
774 | */ | |
775 | wmb(); | |
59e97327 | 776 | if (gelic_card_kick_txdma(card, descr)) { |
48544cc2 MM |
777 | /* |
778 | * kick failed. | |
779 | * release descriptors which were just prepared | |
780 | */ | |
92548d60 | 781 | card->netdev->stats.tx_dropped++; |
59e97327 MM |
782 | gelic_descr_release_tx(card, descr); |
783 | gelic_descr_release_tx(card, descr->next); | |
48544cc2 MM |
784 | card->tx_chain.tail = descr->next->next; |
785 | dev_info(ctodev(card), "%s: kick failure\n", __func__); | |
786 | } else { | |
787 | /* OK, DMA started/reserved */ | |
788 | netdev->trans_start = jiffies; | |
789 | } | |
02c18891 | 790 | |
02c18891 MM |
791 | spin_unlock_irqrestore(&card->tx_dma_lock, flags); |
792 | return NETDEV_TX_OK; | |
02c18891 MM |
793 | } |
794 | ||
795 | /** | |
796 | * gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on | |
797 | * @descr: descriptor to process | |
798 | * @card: card structure | |
799 | * | |
800 | * iommu-unmaps the skb, fills out skb structure and passes the data to the | |
801 | * stack. The descriptor state is not changed. | |
802 | */ | |
59e97327 MM |
803 | static void gelic_net_pass_skb_up(struct gelic_descr *descr, |
804 | struct gelic_card *card) | |
02c18891 MM |
805 | { |
806 | struct sk_buff *skb; | |
807 | struct net_device *netdev; | |
808 | u32 data_status, data_error; | |
809 | ||
100e1d89 MM |
810 | data_status = be32_to_cpu(descr->data_status); |
811 | data_error = be32_to_cpu(descr->data_error); | |
02c18891 MM |
812 | netdev = card->netdev; |
813 | /* unmap skb buffer */ | |
814 | skb = descr->skb; | |
100e1d89 MM |
815 | dma_unmap_single(ctodev(card), |
816 | be32_to_cpu(descr->buf_addr), GELIC_NET_MAX_MTU, | |
02c18891 MM |
817 | DMA_FROM_DEVICE); |
818 | ||
100e1d89 MM |
819 | skb_put(skb, descr->valid_size ? |
820 | be32_to_cpu(descr->valid_size) : | |
821 | be32_to_cpu(descr->result_size)); | |
02c18891 MM |
822 | if (!descr->valid_size) |
823 | dev_info(ctodev(card), "buffer full %x %x %x\n", | |
100e1d89 MM |
824 | be32_to_cpu(descr->result_size), |
825 | be32_to_cpu(descr->buf_size), | |
826 | be32_to_cpu(descr->dmac_cmd_status)); | |
02c18891 MM |
827 | |
828 | descr->skb = NULL; | |
829 | /* | |
830 | * the card put 2 bytes vlan tag in front | |
831 | * of the ethernet frame | |
832 | */ | |
833 | skb_pull(skb, 2); | |
834 | skb->protocol = eth_type_trans(skb, netdev); | |
835 | ||
836 | /* checksum offload */ | |
837 | if (card->rx_csum) { | |
59e97327 MM |
838 | if ((data_status & GELIC_DESCR_DATA_STATUS_CHK_MASK) && |
839 | (!(data_error & GELIC_DESCR_DATA_ERROR_CHK_MASK))) | |
02c18891 MM |
840 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
841 | else | |
842 | skb->ip_summed = CHECKSUM_NONE; | |
843 | } else | |
844 | skb->ip_summed = CHECKSUM_NONE; | |
845 | ||
846 | /* update netdevice statistics */ | |
92548d60 MM |
847 | card->netdev->stats.rx_packets++; |
848 | card->netdev->stats.rx_bytes += skb->len; | |
02c18891 MM |
849 | |
850 | /* pass skb up to stack */ | |
851 | netif_receive_skb(skb); | |
852 | } | |
853 | ||
854 | /** | |
59e97327 | 855 | * gelic_card_decode_one_descr - processes an rx descriptor |
02c18891 MM |
856 | * @card: card structure |
857 | * | |
858 | * returns 1 if a packet has been sent to the stack, otherwise 0 | |
859 | * | |
860 | * processes an rx descriptor by iommu-unmapping the data buffer and passing | |
861 | * the packet up to the stack | |
862 | */ | |
59e97327 | 863 | static int gelic_card_decode_one_descr(struct gelic_card *card) |
02c18891 | 864 | { |
59e97327 MM |
865 | enum gelic_descr_dma_status status; |
866 | struct gelic_descr_chain *chain = &card->rx_chain; | |
867 | struct gelic_descr *descr = chain->tail; | |
02c18891 MM |
868 | int dmac_chain_ended; |
869 | ||
59e97327 | 870 | status = gelic_descr_get_status(descr); |
02c18891 MM |
871 | /* is this descriptor terminated with next_descr == NULL? */ |
872 | dmac_chain_ended = | |
100e1d89 | 873 | be32_to_cpu(descr->dmac_cmd_status) & |
59e97327 | 874 | GELIC_DESCR_RX_DMA_CHAIN_END; |
02c18891 | 875 | |
59e97327 | 876 | if (status == GELIC_DESCR_DMA_CARDOWNED) |
02c18891 MM |
877 | return 0; |
878 | ||
59e97327 | 879 | if (status == GELIC_DESCR_DMA_NOT_IN_USE) { |
02c18891 MM |
880 | dev_dbg(ctodev(card), "dormant descr? %p\n", descr); |
881 | return 0; | |
882 | } | |
883 | ||
59e97327 MM |
884 | if ((status == GELIC_DESCR_DMA_RESPONSE_ERROR) || |
885 | (status == GELIC_DESCR_DMA_PROTECTION_ERROR) || | |
886 | (status == GELIC_DESCR_DMA_FORCE_END)) { | |
02c18891 MM |
887 | dev_info(ctodev(card), "dropping RX descriptor with state %x\n", |
888 | status); | |
92548d60 | 889 | card->netdev->stats.rx_dropped++; |
02c18891 MM |
890 | goto refill; |
891 | } | |
892 | ||
59e97327 | 893 | if (status == GELIC_DESCR_DMA_BUFFER_FULL) { |
fe6d3a40 MM |
894 | /* |
895 | * Buffer full would occur if and only if | |
896 | * the frame length was longer than the size of this | |
897 | * descriptor's buffer. If the frame length was equal | |
898 | * to or shorter than buffer'size, FRAME_END condition | |
899 | * would occur. | |
900 | * Anyway this frame was longer than the MTU, | |
901 | * just drop it. | |
902 | */ | |
903 | dev_info(ctodev(card), "overlength frame\n"); | |
904 | goto refill; | |
905 | } | |
906 | /* | |
907 | * descriptoers any other than FRAME_END here should | |
908 | * be treated as error. | |
909 | */ | |
59e97327 | 910 | if (status != GELIC_DESCR_DMA_FRAME_END) { |
02c18891 MM |
911 | dev_dbg(ctodev(card), "RX descriptor with state %x\n", |
912 | status); | |
913 | goto refill; | |
914 | } | |
915 | ||
916 | /* ok, we've got a packet in descr */ | |
fe6d3a40 | 917 | gelic_net_pass_skb_up(descr, card); |
02c18891 | 918 | refill: |
fe6d3a40 MM |
919 | /* |
920 | * So that always DMAC can see the end | |
921 | * of the descriptor chain to avoid | |
922 | * from unwanted DMAC overrun. | |
923 | */ | |
924 | descr->next_descr_addr = 0; | |
02c18891 MM |
925 | |
926 | /* change the descriptor state: */ | |
59e97327 | 927 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 | 928 | |
fe6d3a40 MM |
929 | /* |
930 | * this call can fail, but for now, just leave this | |
931 | * decriptor without skb | |
02c18891 | 932 | */ |
59e97327 | 933 | gelic_descr_prepare_rx(card, descr); |
fe6d3a40 | 934 | |
02c18891 MM |
935 | chain->head = descr; |
936 | chain->tail = descr->next; | |
fe6d3a40 MM |
937 | |
938 | /* | |
939 | * Set this descriptor the end of the chain. | |
940 | */ | |
100e1d89 | 941 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); |
02c18891 | 942 | |
fe6d3a40 MM |
943 | /* |
944 | * If dmac chain was met, DMAC stopped. | |
945 | * thus re-enable it | |
946 | */ | |
02c18891 | 947 | if (dmac_chain_ended) { |
583aae10 MM |
948 | card->rx_dma_restart_required = 1; |
949 | dev_dbg(ctodev(card), "reenable rx dma scheduled\n"); | |
02c18891 MM |
950 | } |
951 | ||
952 | return 1; | |
953 | } | |
954 | ||
955 | /** | |
956 | * gelic_net_poll - NAPI poll function called by the stack to return packets | |
957 | * @netdev: interface device structure | |
958 | * @budget: number of packets we can pass to the stack at most | |
959 | * | |
960 | * returns 0 if no more packets available to the driver/stack. Returns 1, | |
961 | * if the quota is exceeded, but the driver has still packets. | |
962 | * | |
963 | */ | |
bea3348e | 964 | static int gelic_net_poll(struct napi_struct *napi, int budget) |
02c18891 | 965 | { |
59e97327 | 966 | struct gelic_card *card = container_of(napi, struct gelic_card, napi); |
bea3348e SH |
967 | struct net_device *netdev = card->netdev; |
968 | int packets_done = 0; | |
02c18891 | 969 | |
bea3348e | 970 | while (packets_done < budget) { |
59e97327 | 971 | if (!gelic_card_decode_one_descr(card)) |
02c18891 | 972 | break; |
bea3348e SH |
973 | |
974 | packets_done++; | |
02c18891 | 975 | } |
bea3348e SH |
976 | |
977 | if (packets_done < budget) { | |
978 | netif_rx_complete(netdev, napi); | |
59e97327 | 979 | gelic_card_rx_irq_on(card); |
bea3348e SH |
980 | } |
981 | return packets_done; | |
02c18891 | 982 | } |
02c18891 MM |
983 | /** |
984 | * gelic_net_change_mtu - changes the MTU of an interface | |
985 | * @netdev: interface device structure | |
986 | * @new_mtu: new MTU value | |
987 | * | |
988 | * returns 0 on success, <0 on failure | |
989 | */ | |
990 | static int gelic_net_change_mtu(struct net_device *netdev, int new_mtu) | |
991 | { | |
992 | /* no need to re-alloc skbs or so -- the max mtu is about 2.3k | |
993 | * and mtu is outbound only anyway */ | |
994 | if ((new_mtu < GELIC_NET_MIN_MTU) || | |
995 | (new_mtu > GELIC_NET_MAX_MTU)) { | |
996 | return -EINVAL; | |
997 | } | |
998 | netdev->mtu = new_mtu; | |
999 | return 0; | |
1000 | } | |
1001 | ||
1002 | /** | |
59e97327 | 1003 | * gelic_card_interrupt - event handler for gelic_net |
02c18891 | 1004 | */ |
59e97327 | 1005 | static irqreturn_t gelic_card_interrupt(int irq, void *ptr) |
02c18891 MM |
1006 | { |
1007 | unsigned long flags; | |
1008 | struct net_device *netdev = ptr; | |
59e97327 | 1009 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 MM |
1010 | u64 status; |
1011 | ||
1012 | status = card->irq_status; | |
1013 | ||
1014 | if (!status) | |
1015 | return IRQ_NONE; | |
1016 | ||
583aae10 MM |
1017 | if (card->rx_dma_restart_required) { |
1018 | card->rx_dma_restart_required = 0; | |
59e97327 | 1019 | gelic_card_enable_rxdmac(card); |
583aae10 MM |
1020 | } |
1021 | ||
59e97327 MM |
1022 | if (status & GELIC_CARD_RXINT) { |
1023 | gelic_card_rx_irq_off(card); | |
bea3348e | 1024 | netif_rx_schedule(netdev, &card->napi); |
02c18891 MM |
1025 | } |
1026 | ||
59e97327 | 1027 | if (status & GELIC_CARD_TXINT) { |
02c18891 MM |
1028 | spin_lock_irqsave(&card->tx_dma_lock, flags); |
1029 | card->tx_dma_progress = 0; | |
59e97327 | 1030 | gelic_card_release_tx_chain(card, 0); |
48544cc2 | 1031 | /* kick outstanding tx descriptor if any */ |
59e97327 | 1032 | gelic_card_kick_txdma(card, card->tx_chain.tail); |
02c18891 | 1033 | spin_unlock_irqrestore(&card->tx_dma_lock, flags); |
02c18891 MM |
1034 | } |
1035 | return IRQ_HANDLED; | |
1036 | } | |
1037 | ||
1038 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1039 | /** | |
1040 | * gelic_net_poll_controller - artificial interrupt for netconsole etc. | |
1041 | * @netdev: interface device structure | |
1042 | * | |
1043 | * see Documentation/networking/netconsole.txt | |
1044 | */ | |
1045 | static void gelic_net_poll_controller(struct net_device *netdev) | |
1046 | { | |
59e97327 | 1047 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 | 1048 | |
59e97327 MM |
1049 | gelic_card_set_irq_mask(card, 0); |
1050 | gelic_card_interrupt(netdev->irq, netdev); | |
1051 | gelic_card_set_irq_mask(card, card->ghiintmask); | |
02c18891 MM |
1052 | } |
1053 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1054 | ||
1055 | /** | |
59e97327 | 1056 | * gelic_card_open - open device and map dma region |
02c18891 MM |
1057 | * @card: card structure |
1058 | */ | |
59e97327 | 1059 | static int gelic_card_open(struct gelic_card *card) |
02c18891 MM |
1060 | { |
1061 | int result; | |
1062 | ||
1063 | result = ps3_sb_event_receive_port_setup(card->dev, PS3_BINDING_CPU_ANY, | |
1064 | &card->netdev->irq); | |
1065 | ||
1066 | if (result) { | |
1067 | dev_info(ctodev(card), | |
59e97327 | 1068 | "%s:%d: recieve_port_setup failed (%d)\n", |
02c18891 MM |
1069 | __func__, __LINE__, result); |
1070 | result = -EPERM; | |
1071 | goto fail_alloc_irq; | |
1072 | } | |
1073 | ||
59e97327 | 1074 | result = request_irq(card->netdev->irq, gelic_card_interrupt, |
f0861f82 | 1075 | IRQF_DISABLED, card->netdev->name, card->netdev); |
02c18891 MM |
1076 | |
1077 | if (result) { | |
1078 | dev_info(ctodev(card), "%s:%d: request_irq failed (%d)\n", | |
1079 | __func__, __LINE__, result); | |
1080 | goto fail_request_irq; | |
1081 | } | |
1082 | ||
1083 | return 0; | |
1084 | ||
1085 | fail_request_irq: | |
1086 | ps3_sb_event_receive_port_destroy(card->dev, card->netdev->irq); | |
1087 | card->netdev->irq = NO_IRQ; | |
1088 | fail_alloc_irq: | |
1089 | return result; | |
1090 | } | |
1091 | ||
1092 | ||
1093 | /** | |
1094 | * gelic_net_open - called upon ifonfig up | |
1095 | * @netdev: interface device structure | |
1096 | * | |
1097 | * returns 0 on success, <0 on failure | |
1098 | * | |
1099 | * gelic_net_open allocates all the descriptors and memory needed for | |
1100 | * operation, sets up multicast list and enables interrupts | |
1101 | */ | |
1102 | static int gelic_net_open(struct net_device *netdev) | |
1103 | { | |
59e97327 | 1104 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 MM |
1105 | |
1106 | dev_dbg(ctodev(card), " -> %s:%d\n", __func__, __LINE__); | |
1107 | ||
59e97327 | 1108 | gelic_card_open(card); |
02c18891 | 1109 | |
59e97327 MM |
1110 | if (gelic_card_init_chain(card, &card->tx_chain, |
1111 | card->descr, GELIC_NET_TX_DESCRIPTORS)) | |
02c18891 | 1112 | goto alloc_tx_failed; |
59e97327 MM |
1113 | if (gelic_card_init_chain(card, &card->rx_chain, |
1114 | card->descr + GELIC_NET_TX_DESCRIPTORS, | |
1115 | GELIC_NET_RX_DESCRIPTORS)) | |
02c18891 MM |
1116 | goto alloc_rx_failed; |
1117 | ||
1118 | /* head of chain */ | |
1119 | card->tx_top = card->tx_chain.head; | |
1120 | card->rx_top = card->rx_chain.head; | |
1121 | dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n", | |
59e97327 | 1122 | card->rx_top, card->tx_top, sizeof(struct gelic_descr), |
02c18891 MM |
1123 | GELIC_NET_RX_DESCRIPTORS); |
1124 | /* allocate rx skbs */ | |
59e97327 | 1125 | if (gelic_card_alloc_rx_skbs(card)) |
02c18891 MM |
1126 | goto alloc_skbs_failed; |
1127 | ||
bea3348e SH |
1128 | napi_enable(&card->napi); |
1129 | ||
02c18891 | 1130 | card->tx_dma_progress = 0; |
59e97327 | 1131 | card->ghiintmask = GELIC_CARD_RXINT | GELIC_CARD_TXINT; |
02c18891 | 1132 | |
59e97327 MM |
1133 | gelic_card_set_irq_mask(card, card->ghiintmask); |
1134 | gelic_card_enable_rxdmac(card); | |
02c18891 MM |
1135 | |
1136 | netif_start_queue(netdev); | |
1137 | netif_carrier_on(netdev); | |
02c18891 MM |
1138 | |
1139 | return 0; | |
1140 | ||
1141 | alloc_skbs_failed: | |
59e97327 | 1142 | gelic_card_free_chain(card, card->rx_top); |
02c18891 | 1143 | alloc_rx_failed: |
59e97327 | 1144 | gelic_card_free_chain(card, card->tx_top); |
02c18891 MM |
1145 | alloc_tx_failed: |
1146 | return -ENOMEM; | |
1147 | } | |
1148 | ||
59e97327 MM |
1149 | static void gelic_net_get_drvinfo(struct net_device *netdev, |
1150 | struct ethtool_drvinfo *info) | |
02c18891 MM |
1151 | { |
1152 | strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1); | |
1153 | strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1); | |
1154 | } | |
1155 | ||
59e97327 MM |
1156 | static int gelic_ether_get_settings(struct net_device *netdev, |
1157 | struct ethtool_cmd *cmd) | |
02c18891 | 1158 | { |
59e97327 | 1159 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 MM |
1160 | int status; |
1161 | u64 v1, v2; | |
1162 | int speed, duplex; | |
1163 | ||
1164 | speed = duplex = -1; | |
1165 | status = lv1_net_control(bus_id(card), dev_id(card), | |
59e97327 MM |
1166 | GELIC_LV1_GET_ETH_PORT_STATUS, |
1167 | GELIC_LV1_VLAN_TX_ETHERNET, 0, 0, | |
1168 | &v1, &v2); | |
02c18891 MM |
1169 | if (status) { |
1170 | /* link down */ | |
1171 | } else { | |
59e97327 | 1172 | if (v1 & GELIC_LV1_ETHER_FULL_DUPLEX) { |
02c18891 MM |
1173 | duplex = DUPLEX_FULL; |
1174 | } else { | |
1175 | duplex = DUPLEX_HALF; | |
1176 | } | |
1177 | ||
59e97327 | 1178 | if (v1 & GELIC_LV1_ETHER_SPEED_10) { |
02c18891 | 1179 | speed = SPEED_10; |
59e97327 | 1180 | } else if (v1 & GELIC_LV1_ETHER_SPEED_100) { |
02c18891 | 1181 | speed = SPEED_100; |
59e97327 | 1182 | } else if (v1 & GELIC_LV1_ETHER_SPEED_1000) { |
02c18891 MM |
1183 | speed = SPEED_1000; |
1184 | } | |
1185 | } | |
1186 | cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg | | |
1187 | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | | |
1188 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | | |
1189 | SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full; | |
1190 | cmd->advertising = cmd->supported; | |
1191 | cmd->speed = speed; | |
1192 | cmd->duplex = duplex; | |
1193 | cmd->autoneg = AUTONEG_ENABLE; /* always enabled */ | |
1194 | cmd->port = PORT_TP; | |
1195 | ||
1196 | return 0; | |
1197 | } | |
1198 | ||
59e97327 | 1199 | static u32 gelic_ether_get_link(struct net_device *netdev) |
02c18891 | 1200 | { |
59e97327 | 1201 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 MM |
1202 | int status; |
1203 | u64 v1, v2; | |
1204 | int link; | |
1205 | ||
1206 | status = lv1_net_control(bus_id(card), dev_id(card), | |
59e97327 MM |
1207 | GELIC_LV1_GET_ETH_PORT_STATUS, |
1208 | GELIC_LV1_VLAN_TX_ETHERNET, 0, 0, | |
1209 | &v1, &v2); | |
02c18891 MM |
1210 | if (status) |
1211 | return 0; /* link down */ | |
1212 | ||
59e97327 | 1213 | if (v1 & GELIC_LV1_ETHER_LINK_UP) |
02c18891 MM |
1214 | link = 1; |
1215 | else | |
1216 | link = 0; | |
1217 | ||
1218 | return link; | |
1219 | } | |
1220 | ||
1221 | static int gelic_net_nway_reset(struct net_device *netdev) | |
1222 | { | |
1223 | if (netif_running(netdev)) { | |
1224 | gelic_net_stop(netdev); | |
1225 | gelic_net_open(netdev); | |
1226 | } | |
1227 | return 0; | |
1228 | } | |
1229 | ||
1230 | static u32 gelic_net_get_tx_csum(struct net_device *netdev) | |
1231 | { | |
1232 | return (netdev->features & NETIF_F_IP_CSUM) != 0; | |
1233 | } | |
1234 | ||
1235 | static int gelic_net_set_tx_csum(struct net_device *netdev, u32 data) | |
1236 | { | |
1237 | if (data) | |
1238 | netdev->features |= NETIF_F_IP_CSUM; | |
1239 | else | |
1240 | netdev->features &= ~NETIF_F_IP_CSUM; | |
1241 | ||
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | static u32 gelic_net_get_rx_csum(struct net_device *netdev) | |
1246 | { | |
59e97327 | 1247 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 MM |
1248 | |
1249 | return card->rx_csum; | |
1250 | } | |
1251 | ||
1252 | static int gelic_net_set_rx_csum(struct net_device *netdev, u32 data) | |
1253 | { | |
59e97327 | 1254 | struct gelic_card *card = netdev_priv(netdev); |
02c18891 MM |
1255 | |
1256 | card->rx_csum = data; | |
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | static struct ethtool_ops gelic_net_ethtool_ops = { | |
1261 | .get_drvinfo = gelic_net_get_drvinfo, | |
59e97327 MM |
1262 | .get_settings = gelic_ether_get_settings, |
1263 | .get_link = gelic_ether_get_link, | |
02c18891 MM |
1264 | .nway_reset = gelic_net_nway_reset, |
1265 | .get_tx_csum = gelic_net_get_tx_csum, | |
1266 | .set_tx_csum = gelic_net_set_tx_csum, | |
1267 | .get_rx_csum = gelic_net_get_rx_csum, | |
1268 | .set_rx_csum = gelic_net_set_rx_csum, | |
1269 | }; | |
02c18891 MM |
1270 | |
1271 | /** | |
1272 | * gelic_net_tx_timeout_task - task scheduled by the watchdog timeout | |
1273 | * function (to be called not under interrupt status) | |
1274 | * @work: work is context of tx timout task | |
1275 | * | |
1276 | * called as task when tx hangs, resets interface (if interface is up) | |
1277 | */ | |
1278 | static void gelic_net_tx_timeout_task(struct work_struct *work) | |
1279 | { | |
59e97327 MM |
1280 | struct gelic_card *card = |
1281 | container_of(work, struct gelic_card, tx_timeout_task); | |
02c18891 MM |
1282 | struct net_device *netdev = card->netdev; |
1283 | ||
1284 | dev_info(ctodev(card), "%s:Timed out. Restarting... \n", __func__); | |
1285 | ||
1286 | if (!(netdev->flags & IFF_UP)) | |
1287 | goto out; | |
1288 | ||
1289 | netif_device_detach(netdev); | |
1290 | gelic_net_stop(netdev); | |
1291 | ||
1292 | gelic_net_open(netdev); | |
1293 | netif_device_attach(netdev); | |
1294 | ||
1295 | out: | |
1296 | atomic_dec(&card->tx_timeout_task_counter); | |
1297 | } | |
1298 | ||
1299 | /** | |
1300 | * gelic_net_tx_timeout - called when the tx timeout watchdog kicks in. | |
1301 | * @netdev: interface device structure | |
1302 | * | |
1303 | * called, if tx hangs. Schedules a task that resets the interface | |
1304 | */ | |
1305 | static void gelic_net_tx_timeout(struct net_device *netdev) | |
1306 | { | |
59e97327 | 1307 | struct gelic_card *card; |
02c18891 MM |
1308 | |
1309 | card = netdev_priv(netdev); | |
1310 | atomic_inc(&card->tx_timeout_task_counter); | |
1311 | if (netdev->flags & IFF_UP) | |
1312 | schedule_work(&card->tx_timeout_task); | |
1313 | else | |
1314 | atomic_dec(&card->tx_timeout_task_counter); | |
1315 | } | |
1316 | ||
1317 | /** | |
59e97327 | 1318 | * gelic_ether_setup_netdev_ops - initialization of net_device operations |
02c18891 MM |
1319 | * @netdev: net_device structure |
1320 | * | |
1321 | * fills out function pointers in the net_device structure | |
1322 | */ | |
59e97327 | 1323 | static void gelic_ether_setup_netdev_ops(struct net_device *netdev) |
02c18891 MM |
1324 | { |
1325 | netdev->open = &gelic_net_open; | |
1326 | netdev->stop = &gelic_net_stop; | |
1327 | netdev->hard_start_xmit = &gelic_net_xmit; | |
02c18891 MM |
1328 | netdev->set_multicast_list = &gelic_net_set_multi; |
1329 | netdev->change_mtu = &gelic_net_change_mtu; | |
1330 | /* tx watchdog */ | |
1331 | netdev->tx_timeout = &gelic_net_tx_timeout; | |
1332 | netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT; | |
02c18891 | 1333 | netdev->ethtool_ops = &gelic_net_ethtool_ops; |
02c18891 MM |
1334 | } |
1335 | ||
1336 | /** | |
1337 | * gelic_net_setup_netdev - initialization of net_device | |
1338 | * @card: card structure | |
1339 | * | |
1340 | * Returns 0 on success or <0 on failure | |
1341 | * | |
1342 | * gelic_net_setup_netdev initializes the net_device structure | |
1343 | **/ | |
59e97327 | 1344 | static int gelic_net_setup_netdev(struct gelic_card *card) |
02c18891 MM |
1345 | { |
1346 | struct net_device *netdev = card->netdev; | |
1347 | struct sockaddr addr; | |
1348 | unsigned int i; | |
1349 | int status; | |
1350 | u64 v1, v2; | |
0795af57 | 1351 | DECLARE_MAC_BUF(mac); |
02c18891 | 1352 | |
02c18891 MM |
1353 | SET_NETDEV_DEV(netdev, &card->dev->core); |
1354 | spin_lock_init(&card->tx_dma_lock); | |
1355 | ||
1356 | card->rx_csum = GELIC_NET_RX_CSUM_DEFAULT; | |
1357 | ||
59e97327 | 1358 | gelic_ether_setup_netdev_ops(netdev); |
02c18891 | 1359 | |
bea3348e SH |
1360 | netif_napi_add(netdev, &card->napi, |
1361 | gelic_net_poll, GELIC_NET_NAPI_WEIGHT); | |
1362 | ||
02c18891 MM |
1363 | netdev->features = NETIF_F_IP_CSUM; |
1364 | ||
1365 | status = lv1_net_control(bus_id(card), dev_id(card), | |
59e97327 | 1366 | GELIC_LV1_GET_MAC_ADDRESS, |
02c18891 MM |
1367 | 0, 0, 0, &v1, &v2); |
1368 | if (status || !is_valid_ether_addr((u8 *)&v1)) { | |
1369 | dev_info(ctodev(card), | |
1370 | "%s:lv1_net_control GET_MAC_ADDR failed %d\n", | |
1371 | __func__, status); | |
1372 | return -EINVAL; | |
1373 | } | |
1374 | v1 <<= 16; | |
1375 | memcpy(addr.sa_data, &v1, ETH_ALEN); | |
1376 | memcpy(netdev->dev_addr, addr.sa_data, ETH_ALEN); | |
0795af57 JP |
1377 | dev_info(ctodev(card), "MAC addr %s\n", |
1378 | print_mac(mac, netdev->dev_addr)); | |
02c18891 MM |
1379 | |
1380 | card->vlan_index = -1; /* no vlan */ | |
1381 | for (i = 0; i < GELIC_NET_VLAN_MAX; i++) { | |
1382 | status = lv1_net_control(bus_id(card), dev_id(card), | |
59e97327 | 1383 | GELIC_LV1_GET_VLAN_ID, |
02c18891 MM |
1384 | i + 1, /* index; one based */ |
1385 | 0, 0, &v1, &v2); | |
59e97327 | 1386 | if (status == LV1_NO_ENTRY) { |
02c18891 MM |
1387 | dev_dbg(ctodev(card), |
1388 | "GELIC_VLAN_ID no entry:%d, VLAN disabled\n", | |
1389 | status); | |
1390 | card->vlan_id[i] = 0; | |
1391 | } else if (status) { | |
1392 | dev_dbg(ctodev(card), | |
59e97327 | 1393 | "%s:get vlan id faild, status=%d\n", |
02c18891 MM |
1394 | __func__, status); |
1395 | card->vlan_id[i] = 0; | |
1396 | } else { | |
1397 | card->vlan_id[i] = (u32)v1; | |
1398 | dev_dbg(ctodev(card), "vlan_id:%d, %lx\n", i, v1); | |
1399 | } | |
1400 | } | |
173261ed | 1401 | |
59e97327 MM |
1402 | if (card->vlan_id[GELIC_LV1_VLAN_TX_ETHERNET - 1]) { |
1403 | card->vlan_index = GELIC_LV1_VLAN_TX_ETHERNET - 1; | |
173261ed MM |
1404 | netdev->hard_header_len += VLAN_HLEN; |
1405 | } | |
02c18891 MM |
1406 | |
1407 | status = register_netdev(netdev); | |
1408 | if (status) { | |
1409 | dev_err(ctodev(card), "%s:Couldn't register net_device: %d\n", | |
1410 | __func__, status); | |
1411 | return status; | |
1412 | } | |
1413 | ||
1414 | return 0; | |
1415 | } | |
1416 | ||
1417 | /** | |
59e97327 | 1418 | * gelic_alloc_card_net - allocates net_device and card structure |
02c18891 MM |
1419 | * |
1420 | * returns the card structure or NULL in case of errors | |
1421 | * | |
1422 | * the card and net_device structures are linked to each other | |
1423 | */ | |
59e97327 | 1424 | static struct gelic_card *gelic_alloc_card_net(void) |
02c18891 MM |
1425 | { |
1426 | struct net_device *netdev; | |
59e97327 | 1427 | struct gelic_card *card; |
02c18891 MM |
1428 | size_t alloc_size; |
1429 | ||
59e97327 MM |
1430 | alloc_size = sizeof(*card) + |
1431 | sizeof(struct gelic_descr) * GELIC_NET_RX_DESCRIPTORS + | |
1432 | sizeof(struct gelic_descr) * GELIC_NET_TX_DESCRIPTORS; | |
02c18891 MM |
1433 | /* |
1434 | * we assume private data is allocated 32 bytes (or more) aligned | |
59e97327 | 1435 | * so that gelic_descr should be 32 bytes aligned. |
02c18891 MM |
1436 | * Current alloc_etherdev() does do it because NETDEV_ALIGN |
1437 | * is 32. | |
1438 | * check this assumption here. | |
1439 | */ | |
1440 | BUILD_BUG_ON(NETDEV_ALIGN < 32); | |
59e97327 MM |
1441 | BUILD_BUG_ON(offsetof(struct gelic_card, irq_status) % 8); |
1442 | BUILD_BUG_ON(offsetof(struct gelic_card, descr) % 32); | |
02c18891 MM |
1443 | |
1444 | netdev = alloc_etherdev(alloc_size); | |
1445 | if (!netdev) | |
1446 | return NULL; | |
1447 | ||
1448 | card = netdev_priv(netdev); | |
1449 | card->netdev = netdev; | |
1450 | INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task); | |
1451 | init_waitqueue_head(&card->waitq); | |
1452 | atomic_set(&card->tx_timeout_task_counter, 0); | |
1453 | ||
1454 | return card; | |
1455 | } | |
1456 | ||
1457 | /** | |
1458 | * ps3_gelic_driver_probe - add a device to the control of this driver | |
1459 | */ | |
59e97327 | 1460 | static int ps3_gelic_driver_probe(struct ps3_system_bus_device *dev) |
02c18891 | 1461 | { |
59e97327 | 1462 | struct gelic_card *card = gelic_alloc_card_net(); |
02c18891 MM |
1463 | int result; |
1464 | ||
1465 | if (!card) { | |
1466 | dev_info(&dev->core, "gelic_net_alloc_card failed\n"); | |
1467 | result = -ENOMEM; | |
1468 | goto fail_alloc_card; | |
1469 | } | |
1470 | ||
1471 | ps3_system_bus_set_driver_data(dev, card); | |
1472 | card->dev = dev; | |
1473 | ||
1474 | result = ps3_open_hv_device(dev); | |
1475 | ||
1476 | if (result) { | |
1477 | dev_dbg(&dev->core, "ps3_open_hv_device failed\n"); | |
1478 | goto fail_open; | |
1479 | } | |
1480 | ||
1481 | result = ps3_dma_region_create(dev->d_region); | |
1482 | ||
1483 | if (result) { | |
1484 | dev_dbg(&dev->core, "ps3_dma_region_create failed(%d)\n", | |
1485 | result); | |
1486 | BUG_ON("check region type"); | |
1487 | goto fail_dma_region; | |
1488 | } | |
1489 | ||
1490 | result = lv1_net_set_interrupt_status_indicator(bus_id(card), | |
1491 | dev_id(card), | |
1492 | ps3_mm_phys_to_lpar(__pa(&card->irq_status)), | |
1493 | 0); | |
1494 | ||
1495 | if (result) { | |
1496 | dev_dbg(&dev->core, | |
1497 | "lv1_net_set_interrupt_status_indicator failed: %s\n", | |
1498 | ps3_result(result)); | |
1499 | result = -EIO; | |
1500 | goto fail_status_indicator; | |
1501 | } | |
1502 | ||
1503 | result = gelic_net_setup_netdev(card); | |
1504 | ||
1505 | if (result) { | |
1506 | dev_dbg(&dev->core, "%s:%d: ps3_dma_region_create failed: " | |
1507 | "(%d)\n", __func__, __LINE__, result); | |
1508 | goto fail_setup_netdev; | |
1509 | } | |
1510 | ||
1511 | return 0; | |
1512 | ||
1513 | fail_setup_netdev: | |
1514 | lv1_net_set_interrupt_status_indicator(bus_id(card), | |
b94e1d47 | 1515 | dev_id(card), |
02c18891 MM |
1516 | 0 , 0); |
1517 | fail_status_indicator: | |
1518 | ps3_dma_region_free(dev->d_region); | |
1519 | fail_dma_region: | |
1520 | ps3_close_hv_device(dev); | |
1521 | fail_open: | |
1522 | ps3_system_bus_set_driver_data(dev, NULL); | |
1523 | free_netdev(card->netdev); | |
1524 | fail_alloc_card: | |
1525 | return result; | |
1526 | } | |
1527 | ||
1528 | /** | |
1529 | * ps3_gelic_driver_remove - remove a device from the control of this driver | |
1530 | */ | |
1531 | ||
59e97327 | 1532 | static int ps3_gelic_driver_remove(struct ps3_system_bus_device *dev) |
02c18891 | 1533 | { |
59e97327 | 1534 | struct gelic_card *card = ps3_system_bus_get_driver_data(dev); |
02c18891 MM |
1535 | |
1536 | wait_event(card->waitq, | |
1537 | atomic_read(&card->tx_timeout_task_counter) == 0); | |
1538 | ||
1539 | lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card), | |
1540 | 0 , 0); | |
1541 | ||
1542 | unregister_netdev(card->netdev); | |
1543 | free_netdev(card->netdev); | |
1544 | ||
1545 | ps3_system_bus_set_driver_data(dev, NULL); | |
1546 | ||
1547 | ps3_dma_region_free(dev->d_region); | |
1548 | ||
1549 | ps3_close_hv_device(dev); | |
1550 | ||
1551 | return 0; | |
1552 | } | |
1553 | ||
1554 | static struct ps3_system_bus_driver ps3_gelic_driver = { | |
1555 | .match_id = PS3_MATCH_ID_GELIC, | |
1556 | .probe = ps3_gelic_driver_probe, | |
1557 | .remove = ps3_gelic_driver_remove, | |
1558 | .shutdown = ps3_gelic_driver_remove, | |
1559 | .core.name = "ps3_gelic_driver", | |
1560 | .core.owner = THIS_MODULE, | |
1561 | }; | |
1562 | ||
1563 | static int __init ps3_gelic_driver_init (void) | |
1564 | { | |
1565 | return firmware_has_feature(FW_FEATURE_PS3_LV1) | |
1566 | ? ps3_system_bus_driver_register(&ps3_gelic_driver) | |
1567 | : -ENODEV; | |
1568 | } | |
1569 | ||
1570 | static void __exit ps3_gelic_driver_exit (void) | |
1571 | { | |
1572 | ps3_system_bus_driver_unregister(&ps3_gelic_driver); | |
1573 | } | |
1574 | ||
59e97327 MM |
1575 | module_init(ps3_gelic_driver_init); |
1576 | module_exit(ps3_gelic_driver_exit); | |
02c18891 MM |
1577 | |
1578 | MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC); | |
1579 |