Commit | Line | Data |
---|---|---|
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> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
02c18891 MM |
34 | |
35 | #include <linux/etherdevice.h> | |
36 | #include <linux/ethtool.h> | |
37 | #include <linux/if_vlan.h> | |
38 | ||
39 | #include <linux/in.h> | |
40 | #include <linux/ip.h> | |
41 | #include <linux/tcp.h> | |
42 | ||
43 | #include <linux/dma-mapping.h> | |
44 | #include <net/checksum.h> | |
45 | #include <asm/firmware.h> | |
46 | #include <asm/ps3.h> | |
47 | #include <asm/lv1call.h> | |
48 | ||
49 | #include "ps3_gelic_net.h" | |
09dde54c | 50 | #include "ps3_gelic_wireless.h" |
02c18891 MM |
51 | |
52 | #define DRV_NAME "Gelic Network Driver" | |
09dde54c | 53 | #define DRV_VERSION "2.0" |
02c18891 MM |
54 | |
55 | MODULE_AUTHOR("SCE Inc."); | |
56 | MODULE_DESCRIPTION("Gelic Network driver"); | |
57 | MODULE_LICENSE("GPL"); | |
58 | ||
589866f9 MM |
59 | |
60 | static inline void gelic_card_enable_rxdmac(struct gelic_card *card); | |
61 | static inline void gelic_card_disable_rxdmac(struct gelic_card *card); | |
62 | static inline void gelic_card_disable_txdmac(struct gelic_card *card); | |
63 | static inline void gelic_card_reset_chain(struct gelic_card *card, | |
64 | struct gelic_descr_chain *chain, | |
65 | struct gelic_descr *start_descr); | |
02c18891 MM |
66 | |
67 | /* set irq_mask */ | |
589866f9 | 68 | int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask) |
02c18891 MM |
69 | { |
70 | int status; | |
71 | ||
72 | status = lv1_net_set_interrupt_mask(bus_id(card), dev_id(card), | |
73 | mask, 0); | |
74 | if (status) | |
75 | dev_info(ctodev(card), | |
589866f9 | 76 | "%s failed %d\n", __func__, status); |
02c18891 MM |
77 | return status; |
78 | } | |
589866f9 | 79 | |
59e97327 | 80 | static inline void gelic_card_rx_irq_on(struct gelic_card *card) |
02c18891 | 81 | { |
589866f9 MM |
82 | card->irq_mask |= GELIC_CARD_RXINT; |
83 | gelic_card_set_irq_mask(card, card->irq_mask); | |
02c18891 | 84 | } |
59e97327 | 85 | static inline void gelic_card_rx_irq_off(struct gelic_card *card) |
02c18891 | 86 | { |
589866f9 MM |
87 | card->irq_mask &= ~GELIC_CARD_RXINT; |
88 | gelic_card_set_irq_mask(card, card->irq_mask); | |
02c18891 | 89 | } |
01fed4c2 | 90 | |
589866f9 MM |
91 | static void gelic_card_get_ether_port_status(struct gelic_card *card, |
92 | int inform) | |
01fed4c2 MM |
93 | { |
94 | u64 v2; | |
95 | struct net_device *ether_netdev; | |
96 | ||
97 | lv1_net_control(bus_id(card), dev_id(card), | |
98 | GELIC_LV1_GET_ETH_PORT_STATUS, | |
d4d7f1f9 | 99 | GELIC_LV1_VLAN_TX_ETHERNET_0, 0, 0, |
01fed4c2 MM |
100 | &card->ether_port_status, &v2); |
101 | ||
102 | if (inform) { | |
d4d7f1f9 | 103 | ether_netdev = card->netdev[GELIC_PORT_ETHERNET_0]; |
01fed4c2 MM |
104 | if (card->ether_port_status & GELIC_LV1_ETHER_LINK_UP) |
105 | netif_carrier_on(ether_netdev); | |
106 | else | |
107 | netif_carrier_off(ether_netdev); | |
108 | } | |
109 | } | |
110 | ||
55873ed8 HS |
111 | static int gelic_card_set_link_mode(struct gelic_card *card, int mode) |
112 | { | |
113 | int status; | |
114 | u64 v1, v2; | |
115 | ||
116 | status = lv1_net_control(bus_id(card), dev_id(card), | |
117 | GELIC_LV1_SET_NEGOTIATION_MODE, | |
118 | GELIC_LV1_PHY_ETHERNET_0, mode, 0, &v1, &v2); | |
119 | if (status) { | |
120 | pr_info("%s: failed setting negotiation mode %d\n", __func__, | |
121 | status); | |
122 | return -EBUSY; | |
123 | } | |
124 | ||
125 | card->link_mode = mode; | |
126 | return 0; | |
127 | } | |
128 | ||
589866f9 MM |
129 | void gelic_card_up(struct gelic_card *card) |
130 | { | |
131 | pr_debug("%s: called\n", __func__); | |
2914f3ef | 132 | mutex_lock(&card->updown_lock); |
589866f9 MM |
133 | if (atomic_inc_return(&card->users) == 1) { |
134 | pr_debug("%s: real do\n", __func__); | |
135 | /* enable irq */ | |
136 | gelic_card_set_irq_mask(card, card->irq_mask); | |
137 | /* start rx */ | |
138 | gelic_card_enable_rxdmac(card); | |
139 | ||
140 | napi_enable(&card->napi); | |
141 | } | |
2914f3ef | 142 | mutex_unlock(&card->updown_lock); |
589866f9 MM |
143 | pr_debug("%s: done\n", __func__); |
144 | } | |
145 | ||
146 | void gelic_card_down(struct gelic_card *card) | |
147 | { | |
148 | u64 mask; | |
149 | pr_debug("%s: called\n", __func__); | |
2914f3ef | 150 | mutex_lock(&card->updown_lock); |
589866f9 MM |
151 | if (atomic_dec_if_positive(&card->users) == 0) { |
152 | pr_debug("%s: real do\n", __func__); | |
153 | napi_disable(&card->napi); | |
154 | /* | |
155 | * Disable irq. Wireless interrupts will | |
156 | * be disabled later if any | |
157 | */ | |
158 | mask = card->irq_mask & (GELIC_CARD_WLAN_EVENT_RECEIVED | | |
159 | GELIC_CARD_WLAN_COMMAND_COMPLETED); | |
160 | gelic_card_set_irq_mask(card, mask); | |
161 | /* stop rx */ | |
162 | gelic_card_disable_rxdmac(card); | |
163 | gelic_card_reset_chain(card, &card->rx_chain, | |
164 | card->descr + GELIC_NET_TX_DESCRIPTORS); | |
165 | /* stop tx */ | |
166 | gelic_card_disable_txdmac(card); | |
167 | } | |
2914f3ef | 168 | mutex_unlock(&card->updown_lock); |
589866f9 MM |
169 | pr_debug("%s: done\n", __func__); |
170 | } | |
01fed4c2 | 171 | |
02c18891 | 172 | /** |
59e97327 | 173 | * gelic_descr_get_status -- returns the status of a descriptor |
02c18891 MM |
174 | * @descr: descriptor to look at |
175 | * | |
176 | * returns the status as in the dmac_cmd_status field of the descriptor | |
177 | */ | |
59e97327 MM |
178 | static enum gelic_descr_dma_status |
179 | gelic_descr_get_status(struct gelic_descr *descr) | |
02c18891 | 180 | { |
59e97327 | 181 | return be32_to_cpu(descr->dmac_cmd_status) & GELIC_DESCR_DMA_STAT_MASK; |
02c18891 MM |
182 | } |
183 | ||
184 | /** | |
59e97327 | 185 | * gelic_descr_set_status -- sets the status of a descriptor |
02c18891 MM |
186 | * @descr: descriptor to change |
187 | * @status: status to set in the descriptor | |
188 | * | |
189 | * changes the status to the specified value. Doesn't change other bits | |
190 | * in the status | |
191 | */ | |
59e97327 MM |
192 | static void gelic_descr_set_status(struct gelic_descr *descr, |
193 | enum gelic_descr_dma_status status) | |
02c18891 | 194 | { |
59e97327 | 195 | descr->dmac_cmd_status = cpu_to_be32(status | |
589866f9 MM |
196 | (be32_to_cpu(descr->dmac_cmd_status) & |
197 | ~GELIC_DESCR_DMA_STAT_MASK)); | |
02c18891 MM |
198 | /* |
199 | * dma_cmd_status field is used to indicate whether the descriptor | |
200 | * is valid or not. | |
201 | * Usually caller of this function wants to inform that to the | |
202 | * hardware, so we assure here the hardware sees the change. | |
203 | */ | |
204 | wmb(); | |
205 | } | |
206 | ||
207 | /** | |
59e97327 | 208 | * gelic_card_free_chain - free descriptor chain |
02c18891 MM |
209 | * @card: card structure |
210 | * @descr_in: address of desc | |
211 | */ | |
59e97327 MM |
212 | static void gelic_card_free_chain(struct gelic_card *card, |
213 | struct gelic_descr *descr_in) | |
02c18891 | 214 | { |
59e97327 | 215 | struct gelic_descr *descr; |
02c18891 MM |
216 | |
217 | for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) { | |
218 | dma_unmap_single(ctodev(card), descr->bus_addr, | |
59e97327 | 219 | GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL); |
02c18891 MM |
220 | descr->bus_addr = 0; |
221 | } | |
222 | } | |
223 | ||
224 | /** | |
59e97327 | 225 | * gelic_card_init_chain - links descriptor chain |
02c18891 MM |
226 | * @card: card structure |
227 | * @chain: address of chain | |
228 | * @start_descr: address of descriptor array | |
229 | * @no: number of descriptors | |
230 | * | |
231 | * we manage a circular list that mirrors the hardware structure, | |
232 | * except that the hardware uses bus addresses. | |
233 | * | |
234 | * returns 0 on success, <0 on failure | |
235 | */ | |
48dce82c GU |
236 | static int __devinit gelic_card_init_chain(struct gelic_card *card, |
237 | struct gelic_descr_chain *chain, | |
238 | struct gelic_descr *start_descr, | |
239 | int no) | |
02c18891 MM |
240 | { |
241 | int i; | |
59e97327 | 242 | struct gelic_descr *descr; |
02c18891 MM |
243 | |
244 | descr = start_descr; | |
245 | memset(descr, 0, sizeof(*descr) * no); | |
246 | ||
247 | /* set up the hardware pointers in each descriptor */ | |
248 | for (i = 0; i < no; i++, descr++) { | |
59e97327 | 249 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
250 | descr->bus_addr = |
251 | dma_map_single(ctodev(card), descr, | |
59e97327 | 252 | GELIC_DESCR_SIZE, |
02c18891 MM |
253 | DMA_BIDIRECTIONAL); |
254 | ||
255 | if (!descr->bus_addr) | |
256 | goto iommu_error; | |
257 | ||
258 | descr->next = descr + 1; | |
259 | descr->prev = descr - 1; | |
260 | } | |
261 | /* make them as ring */ | |
262 | (descr - 1)->next = start_descr; | |
263 | start_descr->prev = (descr - 1); | |
264 | ||
265 | /* chain bus addr of hw descriptor */ | |
266 | descr = start_descr; | |
267 | for (i = 0; i < no; i++, descr++) { | |
100e1d89 | 268 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); |
02c18891 MM |
269 | } |
270 | ||
271 | chain->head = start_descr; | |
272 | chain->tail = start_descr; | |
273 | ||
274 | /* do not chain last hw descriptor */ | |
275 | (descr - 1)->next_descr_addr = 0; | |
276 | ||
277 | return 0; | |
278 | ||
279 | iommu_error: | |
280 | for (i--, descr--; 0 <= i; i--, descr--) | |
281 | if (descr->bus_addr) | |
282 | dma_unmap_single(ctodev(card), descr->bus_addr, | |
59e97327 | 283 | GELIC_DESCR_SIZE, |
02c18891 MM |
284 | DMA_BIDIRECTIONAL); |
285 | return -ENOMEM; | |
286 | } | |
287 | ||
589866f9 MM |
288 | /** |
289 | * gelic_card_reset_chain - reset status of a descriptor chain | |
290 | * @card: card structure | |
291 | * @chain: address of chain | |
292 | * @start_descr: address of descriptor array | |
293 | * | |
294 | * Reset the status of dma descriptors to ready state | |
295 | * and re-initialize the hardware chain for later use | |
296 | */ | |
297 | static void gelic_card_reset_chain(struct gelic_card *card, | |
298 | struct gelic_descr_chain *chain, | |
299 | struct gelic_descr *start_descr) | |
300 | { | |
301 | struct gelic_descr *descr; | |
302 | ||
303 | for (descr = start_descr; start_descr != descr->next; descr++) { | |
304 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); | |
305 | descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr); | |
306 | } | |
307 | ||
308 | chain->head = start_descr; | |
309 | chain->tail = (descr - 1); | |
310 | ||
311 | (descr - 1)->next_descr_addr = 0; | |
312 | } | |
02c18891 | 313 | /** |
59e97327 | 314 | * gelic_descr_prepare_rx - reinitializes a rx descriptor |
02c18891 MM |
315 | * @card: card structure |
316 | * @descr: descriptor to re-init | |
317 | * | |
af901ca1 | 318 | * return 0 on success, <0 on failure |
02c18891 MM |
319 | * |
320 | * allocates a new rx skb, iommu-maps it and attaches it to the descriptor. | |
321 | * Activate the descriptor state-wise | |
322 | */ | |
59e97327 | 323 | static int gelic_descr_prepare_rx(struct gelic_card *card, |
589866f9 | 324 | struct gelic_descr *descr) |
02c18891 MM |
325 | { |
326 | int offset; | |
327 | unsigned int bufsize; | |
328 | ||
59e97327 | 329 | if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE) |
583d077d | 330 | dev_info(ctodev(card), "%s: ERROR status\n", __func__); |
02c18891 MM |
331 | /* we need to round up the buffer size to a multiple of 128 */ |
332 | bufsize = ALIGN(GELIC_NET_MAX_MTU, GELIC_NET_RXBUF_ALIGN); | |
333 | ||
334 | /* and we need to have it 128 byte aligned, therefore we allocate a | |
335 | * bit more */ | |
589866f9 | 336 | descr->skb = dev_alloc_skb(bufsize + GELIC_NET_RXBUF_ALIGN - 1); |
02c18891 MM |
337 | if (!descr->skb) { |
338 | descr->buf_addr = 0; /* tell DMAC don't touch memory */ | |
339 | dev_info(ctodev(card), | |
340 | "%s:allocate skb failed !!\n", __func__); | |
341 | return -ENOMEM; | |
342 | } | |
100e1d89 | 343 | descr->buf_size = cpu_to_be32(bufsize); |
02c18891 MM |
344 | descr->dmac_cmd_status = 0; |
345 | descr->result_size = 0; | |
346 | descr->valid_size = 0; | |
347 | descr->data_error = 0; | |
348 | ||
349 | offset = ((unsigned long)descr->skb->data) & | |
350 | (GELIC_NET_RXBUF_ALIGN - 1); | |
351 | if (offset) | |
352 | skb_reserve(descr->skb, GELIC_NET_RXBUF_ALIGN - offset); | |
353 | /* io-mmu-map the skb */ | |
100e1d89 MM |
354 | descr->buf_addr = cpu_to_be32(dma_map_single(ctodev(card), |
355 | descr->skb->data, | |
356 | GELIC_NET_MAX_MTU, | |
357 | DMA_FROM_DEVICE)); | |
02c18891 MM |
358 | if (!descr->buf_addr) { |
359 | dev_kfree_skb_any(descr->skb); | |
360 | descr->skb = NULL; | |
361 | dev_info(ctodev(card), | |
362 | "%s:Could not iommu-map rx buffer\n", __func__); | |
59e97327 | 363 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
364 | return -ENOMEM; |
365 | } else { | |
59e97327 | 366 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED); |
02c18891 MM |
367 | return 0; |
368 | } | |
369 | } | |
370 | ||
371 | /** | |
59e97327 | 372 | * gelic_card_release_rx_chain - free all skb of rx descr |
02c18891 MM |
373 | * @card: card structure |
374 | * | |
375 | */ | |
59e97327 | 376 | static void gelic_card_release_rx_chain(struct gelic_card *card) |
02c18891 | 377 | { |
59e97327 | 378 | struct gelic_descr *descr = card->rx_chain.head; |
02c18891 MM |
379 | |
380 | do { | |
381 | if (descr->skb) { | |
382 | dma_unmap_single(ctodev(card), | |
100e1d89 | 383 | be32_to_cpu(descr->buf_addr), |
02c18891 MM |
384 | descr->skb->len, |
385 | DMA_FROM_DEVICE); | |
386 | descr->buf_addr = 0; | |
387 | dev_kfree_skb_any(descr->skb); | |
388 | descr->skb = NULL; | |
59e97327 MM |
389 | gelic_descr_set_status(descr, |
390 | GELIC_DESCR_DMA_NOT_IN_USE); | |
02c18891 MM |
391 | } |
392 | descr = descr->next; | |
393 | } while (descr != card->rx_chain.head); | |
394 | } | |
395 | ||
396 | /** | |
59e97327 | 397 | * gelic_card_fill_rx_chain - fills descriptors/skbs in the rx chains |
02c18891 MM |
398 | * @card: card structure |
399 | * | |
400 | * fills all descriptors in the rx chain: allocates skbs | |
401 | * and iommu-maps them. | |
59e97327 | 402 | * returns 0 on success, < 0 on failure |
02c18891 | 403 | */ |
59e97327 | 404 | static int gelic_card_fill_rx_chain(struct gelic_card *card) |
02c18891 | 405 | { |
59e97327 | 406 | struct gelic_descr *descr = card->rx_chain.head; |
02c18891 MM |
407 | int ret; |
408 | ||
409 | do { | |
410 | if (!descr->skb) { | |
59e97327 | 411 | ret = gelic_descr_prepare_rx(card, descr); |
02c18891 MM |
412 | if (ret) |
413 | goto rewind; | |
414 | } | |
415 | descr = descr->next; | |
416 | } while (descr != card->rx_chain.head); | |
417 | ||
418 | return 0; | |
419 | rewind: | |
59e97327 | 420 | gelic_card_release_rx_chain(card); |
02c18891 MM |
421 | return ret; |
422 | } | |
423 | ||
424 | /** | |
59e97327 | 425 | * gelic_card_alloc_rx_skbs - allocates rx skbs in rx descriptor chains |
02c18891 MM |
426 | * @card: card structure |
427 | * | |
59e97327 | 428 | * returns 0 on success, < 0 on failure |
02c18891 | 429 | */ |
48dce82c | 430 | static int __devinit gelic_card_alloc_rx_skbs(struct gelic_card *card) |
02c18891 | 431 | { |
59e97327 | 432 | struct gelic_descr_chain *chain; |
02c18891 MM |
433 | int ret; |
434 | chain = &card->rx_chain; | |
59e97327 | 435 | ret = gelic_card_fill_rx_chain(card); |
589866f9 | 436 | chain->tail = card->rx_top->prev; /* point to the last */ |
02c18891 MM |
437 | return ret; |
438 | } | |
439 | ||
440 | /** | |
59e97327 | 441 | * gelic_descr_release_tx - processes a used tx descriptor |
02c18891 MM |
442 | * @card: card structure |
443 | * @descr: descriptor to release | |
444 | * | |
445 | * releases a used tx descriptor (unmapping, freeing of skb) | |
446 | */ | |
59e97327 | 447 | static void gelic_descr_release_tx(struct gelic_card *card, |
589866f9 | 448 | struct gelic_descr *descr) |
02c18891 | 449 | { |
173261ed | 450 | struct sk_buff *skb = descr->skb; |
02c18891 | 451 | |
589866f9 MM |
452 | BUG_ON(!(be32_to_cpu(descr->data_status) & GELIC_DESCR_TX_TAIL)); |
453 | ||
454 | dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), skb->len, | |
455 | DMA_TO_DEVICE); | |
173261ed | 456 | dev_kfree_skb_any(skb); |
02c18891 MM |
457 | |
458 | descr->buf_addr = 0; | |
459 | descr->buf_size = 0; | |
460 | descr->next_descr_addr = 0; | |
461 | descr->result_size = 0; | |
462 | descr->valid_size = 0; | |
463 | descr->data_status = 0; | |
464 | descr->data_error = 0; | |
465 | descr->skb = NULL; | |
466 | ||
467 | /* set descr status */ | |
59e97327 | 468 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 MM |
469 | } |
470 | ||
589866f9 MM |
471 | static void gelic_card_stop_queues(struct gelic_card *card) |
472 | { | |
d4d7f1f9 | 473 | netif_stop_queue(card->netdev[GELIC_PORT_ETHERNET_0]); |
589866f9 MM |
474 | |
475 | if (card->netdev[GELIC_PORT_WIRELESS]) | |
476 | netif_stop_queue(card->netdev[GELIC_PORT_WIRELESS]); | |
477 | } | |
478 | static void gelic_card_wake_queues(struct gelic_card *card) | |
479 | { | |
d4d7f1f9 | 480 | netif_wake_queue(card->netdev[GELIC_PORT_ETHERNET_0]); |
589866f9 MM |
481 | |
482 | if (card->netdev[GELIC_PORT_WIRELESS]) | |
483 | netif_wake_queue(card->netdev[GELIC_PORT_WIRELESS]); | |
484 | } | |
02c18891 | 485 | /** |
59e97327 | 486 | * gelic_card_release_tx_chain - processes sent tx descriptors |
02c18891 MM |
487 | * @card: adapter structure |
488 | * @stop: net_stop sequence | |
489 | * | |
490 | * releases the tx descriptors that gelic has finished with | |
491 | */ | |
59e97327 | 492 | static void gelic_card_release_tx_chain(struct gelic_card *card, int stop) |
02c18891 | 493 | { |
59e97327 MM |
494 | struct gelic_descr_chain *tx_chain; |
495 | enum gelic_descr_dma_status status; | |
589866f9 | 496 | struct net_device *netdev; |
02c18891 MM |
497 | int release = 0; |
498 | ||
499 | for (tx_chain = &card->tx_chain; | |
500 | tx_chain->head != tx_chain->tail && tx_chain->tail; | |
501 | tx_chain->tail = tx_chain->tail->next) { | |
59e97327 | 502 | status = gelic_descr_get_status(tx_chain->tail); |
589866f9 | 503 | netdev = tx_chain->tail->skb->dev; |
02c18891 | 504 | switch (status) { |
59e97327 MM |
505 | case GELIC_DESCR_DMA_RESPONSE_ERROR: |
506 | case GELIC_DESCR_DMA_PROTECTION_ERROR: | |
507 | case GELIC_DESCR_DMA_FORCE_END: | |
02c18891 MM |
508 | if (printk_ratelimit()) |
509 | dev_info(ctodev(card), | |
510 | "%s: forcing end of tx descriptor " \ | |
511 | "with status %x\n", | |
512 | __func__, status); | |
589866f9 | 513 | netdev->stats.tx_dropped++; |
02c18891 MM |
514 | break; |
515 | ||
59e97327 | 516 | case GELIC_DESCR_DMA_COMPLETE: |
48544cc2 | 517 | if (tx_chain->tail->skb) { |
589866f9 MM |
518 | netdev->stats.tx_packets++; |
519 | netdev->stats.tx_bytes += | |
48544cc2 MM |
520 | tx_chain->tail->skb->len; |
521 | } | |
02c18891 MM |
522 | break; |
523 | ||
59e97327 | 524 | case GELIC_DESCR_DMA_CARDOWNED: |
02c18891 MM |
525 | /* pending tx request */ |
526 | default: | |
59e97327 | 527 | /* any other value (== GELIC_DESCR_DMA_NOT_IN_USE) */ |
48544cc2 MM |
528 | if (!stop) |
529 | goto out; | |
02c18891 | 530 | } |
59e97327 | 531 | gelic_descr_release_tx(card, tx_chain->tail); |
48544cc2 | 532 | release ++; |
02c18891 MM |
533 | } |
534 | out: | |
173261ed | 535 | if (!stop && release) |
589866f9 | 536 | gelic_card_wake_queues(card); |
02c18891 MM |
537 | } |
538 | ||
539 | /** | |
540 | * gelic_net_set_multi - sets multicast addresses and promisc flags | |
541 | * @netdev: interface device structure | |
542 | * | |
543 | * gelic_net_set_multi configures multicast addresses as needed for the | |
544 | * netdev interface. It also sets up multicast, allmulti and promisc | |
545 | * flags appropriately | |
546 | */ | |
589866f9 | 547 | void gelic_net_set_multi(struct net_device *netdev) |
02c18891 | 548 | { |
589866f9 | 549 | struct gelic_card *card = netdev_card(netdev); |
22bedad3 | 550 | struct netdev_hw_addr *ha; |
02c18891 MM |
551 | unsigned int i; |
552 | uint8_t *p; | |
553 | u64 addr; | |
554 | int status; | |
555 | ||
556 | /* clear all multicast address */ | |
557 | status = lv1_net_remove_multicast_address(bus_id(card), dev_id(card), | |
558 | 0, 1); | |
559 | if (status) | |
560 | dev_err(ctodev(card), | |
561 | "lv1_net_remove_multicast_address failed %d\n", | |
562 | status); | |
563 | /* set broadcast address */ | |
564 | status = lv1_net_add_multicast_address(bus_id(card), dev_id(card), | |
565 | GELIC_NET_BROADCAST_ADDR, 0); | |
566 | if (status) | |
567 | dev_err(ctodev(card), | |
568 | "lv1_net_add_multicast_address failed, %d\n", | |
569 | status); | |
570 | ||
589866f9 | 571 | if ((netdev->flags & IFF_ALLMULTI) || |
4cd24eaf | 572 | (netdev_mc_count(netdev) > GELIC_NET_MC_COUNT_MAX)) { |
02c18891 MM |
573 | status = lv1_net_add_multicast_address(bus_id(card), |
574 | dev_id(card), | |
575 | 0, 1); | |
576 | if (status) | |
577 | dev_err(ctodev(card), | |
578 | "lv1_net_add_multicast_address failed, %d\n", | |
579 | status); | |
580 | return; | |
581 | } | |
582 | ||
589866f9 | 583 | /* set multicast addresses */ |
22bedad3 | 584 | netdev_for_each_mc_addr(ha, netdev) { |
02c18891 | 585 | addr = 0; |
22bedad3 | 586 | p = ha->addr; |
02c18891 MM |
587 | for (i = 0; i < ETH_ALEN; i++) { |
588 | addr <<= 8; | |
589 | addr |= *p++; | |
590 | } | |
591 | status = lv1_net_add_multicast_address(bus_id(card), | |
592 | dev_id(card), | |
593 | addr, 0); | |
594 | if (status) | |
595 | dev_err(ctodev(card), | |
596 | "lv1_net_add_multicast_address failed, %d\n", | |
597 | status); | |
598 | } | |
599 | } | |
600 | ||
601 | /** | |
59e97327 | 602 | * gelic_card_enable_rxdmac - enables the receive DMA controller |
02c18891 MM |
603 | * @card: card structure |
604 | * | |
59e97327 | 605 | * gelic_card_enable_rxdmac enables the DMA controller by setting RX_DMA_EN |
02c18891 MM |
606 | * in the GDADMACCNTR register |
607 | */ | |
59e97327 | 608 | static inline void gelic_card_enable_rxdmac(struct gelic_card *card) |
02c18891 MM |
609 | { |
610 | int status; | |
611 | ||
589866f9 MM |
612 | #ifdef DEBUG |
613 | if (gelic_descr_get_status(card->rx_chain.head) != | |
614 | GELIC_DESCR_DMA_CARDOWNED) { | |
615 | printk(KERN_ERR "%s: status=%x\n", __func__, | |
616 | be32_to_cpu(card->rx_chain.head->dmac_cmd_status)); | |
617 | printk(KERN_ERR "%s: nextphy=%x\n", __func__, | |
618 | be32_to_cpu(card->rx_chain.head->next_descr_addr)); | |
619 | printk(KERN_ERR "%s: head=%p\n", __func__, | |
620 | card->rx_chain.head); | |
621 | } | |
622 | #endif | |
02c18891 | 623 | status = lv1_net_start_rx_dma(bus_id(card), dev_id(card), |
589866f9 | 624 | card->rx_chain.head->bus_addr, 0); |
02c18891 MM |
625 | if (status) |
626 | dev_info(ctodev(card), | |
627 | "lv1_net_start_rx_dma failed, status=%d\n", status); | |
628 | } | |
629 | ||
630 | /** | |
59e97327 | 631 | * gelic_card_disable_rxdmac - disables the receive DMA controller |
02c18891 MM |
632 | * @card: card structure |
633 | * | |
59e97327 | 634 | * gelic_card_disable_rxdmac terminates processing on the DMA controller by |
02c18891 MM |
635 | * turing off DMA and issueing a force end |
636 | */ | |
59e97327 | 637 | static inline void gelic_card_disable_rxdmac(struct gelic_card *card) |
02c18891 MM |
638 | { |
639 | int status; | |
640 | ||
641 | /* this hvc blocks until the DMA in progress really stopped */ | |
642 | status = lv1_net_stop_rx_dma(bus_id(card), dev_id(card), 0); | |
643 | if (status) | |
644 | dev_err(ctodev(card), | |
645 | "lv1_net_stop_rx_dma faild, %d\n", status); | |
646 | } | |
647 | ||
648 | /** | |
59e97327 | 649 | * gelic_card_disable_txdmac - disables the transmit DMA controller |
02c18891 MM |
650 | * @card: card structure |
651 | * | |
59e97327 | 652 | * gelic_card_disable_txdmac terminates processing on the DMA controller by |
02c18891 MM |
653 | * turing off DMA and issueing a force end |
654 | */ | |
59e97327 | 655 | static inline void gelic_card_disable_txdmac(struct gelic_card *card) |
02c18891 MM |
656 | { |
657 | int status; | |
658 | ||
659 | /* this hvc blocks until the DMA in progress really stopped */ | |
660 | status = lv1_net_stop_tx_dma(bus_id(card), dev_id(card), 0); | |
661 | if (status) | |
662 | dev_err(ctodev(card), | |
663 | "lv1_net_stop_tx_dma faild, status=%d\n", status); | |
664 | } | |
665 | ||
666 | /** | |
667 | * gelic_net_stop - called upon ifconfig down | |
668 | * @netdev: interface device structure | |
669 | * | |
670 | * always returns 0 | |
671 | */ | |
589866f9 | 672 | int gelic_net_stop(struct net_device *netdev) |
02c18891 | 673 | { |
589866f9 | 674 | struct gelic_card *card; |
02c18891 | 675 | |
589866f9 | 676 | pr_debug("%s: start\n", __func__); |
02c18891 | 677 | |
589866f9 | 678 | netif_stop_queue(netdev); |
02c18891 MM |
679 | netif_carrier_off(netdev); |
680 | ||
589866f9 MM |
681 | card = netdev_card(netdev); |
682 | gelic_card_down(card); | |
02c18891 | 683 | |
589866f9 | 684 | pr_debug("%s: done\n", __func__); |
02c18891 MM |
685 | return 0; |
686 | } | |
687 | ||
688 | /** | |
59e97327 | 689 | * gelic_card_get_next_tx_descr - returns the next available tx descriptor |
02c18891 MM |
690 | * @card: device structure to get descriptor from |
691 | * | |
692 | * returns the address of the next descriptor, or NULL if not available. | |
693 | */ | |
59e97327 MM |
694 | static struct gelic_descr * |
695 | gelic_card_get_next_tx_descr(struct gelic_card *card) | |
02c18891 MM |
696 | { |
697 | if (!card->tx_chain.head) | |
698 | return NULL; | |
173261ed | 699 | /* see if the next descriptor is free */ |
02c18891 | 700 | if (card->tx_chain.tail != card->tx_chain.head->next && |
59e97327 MM |
701 | gelic_descr_get_status(card->tx_chain.head) == |
702 | GELIC_DESCR_DMA_NOT_IN_USE) | |
02c18891 MM |
703 | return card->tx_chain.head; |
704 | else | |
705 | return NULL; | |
706 | ||
707 | } | |
708 | ||
709 | /** | |
589866f9 | 710 | * gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field |
02c18891 MM |
711 | * @descr: descriptor structure to fill out |
712 | * @skb: packet to consider | |
02c18891 MM |
713 | * |
714 | * fills out the command and status field of the descriptor structure, | |
715 | * depending on hardware checksum settings. This function assumes a wmb() | |
716 | * has executed before. | |
717 | */ | |
59e97327 MM |
718 | static void gelic_descr_set_tx_cmdstat(struct gelic_descr *descr, |
719 | struct sk_buff *skb) | |
02c18891 | 720 | { |
02c18891 | 721 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
100e1d89 | 722 | descr->dmac_cmd_status = |
59e97327 MM |
723 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | |
724 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
725 | else { |
726 | /* is packet ip? | |
727 | * if yes: tcp? udp? */ | |
728 | if (skb->protocol == htons(ETH_P_IP)) { | |
729 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
730 | descr->dmac_cmd_status = | |
59e97327 MM |
731 | cpu_to_be32(GELIC_DESCR_DMA_CMD_TCP_CHKSUM | |
732 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
173261ed | 733 | |
02c18891 MM |
734 | else if (ip_hdr(skb)->protocol == IPPROTO_UDP) |
735 | descr->dmac_cmd_status = | |
59e97327 MM |
736 | cpu_to_be32(GELIC_DESCR_DMA_CMD_UDP_CHKSUM | |
737 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
738 | else /* |
739 | * the stack should checksum non-tcp and non-udp | |
740 | * packets on his own: NETIF_F_IP_CSUM | |
741 | */ | |
742 | descr->dmac_cmd_status = | |
59e97327 MM |
743 | cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM | |
744 | GELIC_DESCR_TX_DMA_FRAME_TAIL); | |
02c18891 MM |
745 | } |
746 | } | |
747 | } | |
748 | ||
173261ed MM |
749 | static inline struct sk_buff *gelic_put_vlan_tag(struct sk_buff *skb, |
750 | unsigned short tag) | |
751 | { | |
752 | struct vlan_ethhdr *veth; | |
753 | static unsigned int c; | |
754 | ||
755 | if (skb_headroom(skb) < VLAN_HLEN) { | |
756 | struct sk_buff *sk_tmp = skb; | |
757 | pr_debug("%s: hd=%d c=%ud\n", __func__, skb_headroom(skb), c); | |
758 | skb = skb_realloc_headroom(sk_tmp, VLAN_HLEN); | |
759 | if (!skb) | |
760 | return NULL; | |
761 | dev_kfree_skb_any(sk_tmp); | |
762 | } | |
763 | veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN); | |
764 | ||
765 | /* Move the mac addresses to the top of buffer */ | |
766 | memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN); | |
767 | ||
09640e63 | 768 | veth->h_vlan_proto = cpu_to_be16(ETH_P_8021Q); |
173261ed MM |
769 | veth->h_vlan_TCI = htons(tag); |
770 | ||
771 | return skb; | |
772 | } | |
773 | ||
02c18891 | 774 | /** |
589866f9 | 775 | * gelic_descr_prepare_tx - setup a descriptor for sending packets |
02c18891 MM |
776 | * @card: card structure |
777 | * @descr: descriptor structure | |
778 | * @skb: packet to use | |
779 | * | |
780 | * returns 0 on success, <0 on failure. | |
781 | * | |
782 | */ | |
59e97327 MM |
783 | static int gelic_descr_prepare_tx(struct gelic_card *card, |
784 | struct gelic_descr *descr, | |
785 | struct sk_buff *skb) | |
02c18891 | 786 | { |
173261ed | 787 | dma_addr_t buf; |
02c18891 | 788 | |
589866f9 | 789 | if (card->vlan_required) { |
173261ed | 790 | struct sk_buff *skb_tmp; |
589866f9 MM |
791 | enum gelic_port_type type; |
792 | ||
793 | type = netdev_port(skb->dev)->type; | |
173261ed | 794 | skb_tmp = gelic_put_vlan_tag(skb, |
589866f9 | 795 | card->vlan[type].tx); |
173261ed MM |
796 | if (!skb_tmp) |
797 | return -ENOMEM; | |
798 | skb = skb_tmp; | |
02c18891 MM |
799 | } |
800 | ||
173261ed | 801 | buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE); |
02c18891 | 802 | |
173261ed | 803 | if (!buf) { |
02c18891 MM |
804 | dev_err(ctodev(card), |
805 | "dma map 2 failed (%p, %i). Dropping packet\n", | |
173261ed | 806 | skb->data, skb->len); |
02c18891 MM |
807 | return -ENOMEM; |
808 | } | |
809 | ||
100e1d89 MM |
810 | descr->buf_addr = cpu_to_be32(buf); |
811 | descr->buf_size = cpu_to_be32(skb->len); | |
173261ed | 812 | descr->skb = skb; |
02c18891 | 813 | descr->data_status = 0; |
173261ed | 814 | descr->next_descr_addr = 0; /* terminate hw descr */ |
59e97327 | 815 | gelic_descr_set_tx_cmdstat(descr, skb); |
48544cc2 MM |
816 | |
817 | /* bump free descriptor pointer */ | |
173261ed | 818 | card->tx_chain.head = descr->next; |
02c18891 MM |
819 | return 0; |
820 | } | |
821 | ||
822 | /** | |
59e97327 | 823 | * gelic_card_kick_txdma - enables TX DMA processing |
02c18891 MM |
824 | * @card: card structure |
825 | * @descr: descriptor address to enable TX processing at | |
826 | * | |
827 | */ | |
59e97327 MM |
828 | static int gelic_card_kick_txdma(struct gelic_card *card, |
829 | struct gelic_descr *descr) | |
02c18891 | 830 | { |
48544cc2 | 831 | int status = 0; |
02c18891 MM |
832 | |
833 | if (card->tx_dma_progress) | |
834 | return 0; | |
835 | ||
59e97327 | 836 | if (gelic_descr_get_status(descr) == GELIC_DESCR_DMA_CARDOWNED) { |
02c18891 | 837 | card->tx_dma_progress = 1; |
dc029ad9 MM |
838 | status = lv1_net_start_tx_dma(bus_id(card), dev_id(card), |
839 | descr->bus_addr, 0); | |
840 | if (status) | |
02c18891 | 841 | dev_info(ctodev(card), "lv1_net_start_txdma failed," \ |
dc029ad9 | 842 | "status=%d\n", status); |
02c18891 MM |
843 | } |
844 | return status; | |
845 | } | |
846 | ||
847 | /** | |
848 | * gelic_net_xmit - transmits a frame over the device | |
849 | * @skb: packet to send out | |
850 | * @netdev: interface device structure | |
851 | * | |
852 | * returns 0 on success, <0 on failure | |
853 | */ | |
589866f9 | 854 | int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev) |
02c18891 | 855 | { |
589866f9 | 856 | struct gelic_card *card = netdev_card(netdev); |
59e97327 | 857 | struct gelic_descr *descr; |
02c18891 MM |
858 | int result; |
859 | unsigned long flags; | |
860 | ||
589866f9 | 861 | spin_lock_irqsave(&card->tx_lock, flags); |
02c18891 | 862 | |
59e97327 | 863 | gelic_card_release_tx_chain(card, 0); |
48544cc2 | 864 | |
59e97327 | 865 | descr = gelic_card_get_next_tx_descr(card); |
02c18891 | 866 | if (!descr) { |
48544cc2 MM |
867 | /* |
868 | * no more descriptors free | |
869 | */ | |
589866f9 MM |
870 | gelic_card_stop_queues(card); |
871 | spin_unlock_irqrestore(&card->tx_lock, flags); | |
02c18891 MM |
872 | return NETDEV_TX_BUSY; |
873 | } | |
02c18891 | 874 | |
59e97327 | 875 | result = gelic_descr_prepare_tx(card, descr, skb); |
48544cc2 MM |
876 | if (result) { |
877 | /* | |
878 | * DMA map failed. As chanses are that failure | |
879 | * would continue, just release skb and return | |
880 | */ | |
589866f9 | 881 | netdev->stats.tx_dropped++; |
48544cc2 | 882 | dev_kfree_skb_any(skb); |
589866f9 | 883 | spin_unlock_irqrestore(&card->tx_lock, flags); |
48544cc2 MM |
884 | return NETDEV_TX_OK; |
885 | } | |
886 | /* | |
887 | * link this prepared descriptor to previous one | |
888 | * to achieve high performance | |
889 | */ | |
100e1d89 | 890 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); |
02c18891 MM |
891 | /* |
892 | * as hardware descriptor is modified in the above lines, | |
893 | * ensure that the hardware sees it | |
894 | */ | |
895 | wmb(); | |
59e97327 | 896 | if (gelic_card_kick_txdma(card, descr)) { |
48544cc2 MM |
897 | /* |
898 | * kick failed. | |
899 | * release descriptors which were just prepared | |
900 | */ | |
589866f9 | 901 | netdev->stats.tx_dropped++; |
59e97327 MM |
902 | gelic_descr_release_tx(card, descr); |
903 | gelic_descr_release_tx(card, descr->next); | |
48544cc2 MM |
904 | card->tx_chain.tail = descr->next->next; |
905 | dev_info(ctodev(card), "%s: kick failure\n", __func__); | |
48544cc2 | 906 | } |
02c18891 | 907 | |
589866f9 | 908 | spin_unlock_irqrestore(&card->tx_lock, flags); |
02c18891 | 909 | return NETDEV_TX_OK; |
02c18891 MM |
910 | } |
911 | ||
912 | /** | |
913 | * gelic_net_pass_skb_up - takes an skb from a descriptor and passes it on | |
914 | * @descr: descriptor to process | |
915 | * @card: card structure | |
589866f9 | 916 | * @netdev: net_device structure to be passed packet |
02c18891 MM |
917 | * |
918 | * iommu-unmaps the skb, fills out skb structure and passes the data to the | |
919 | * stack. The descriptor state is not changed. | |
920 | */ | |
59e97327 | 921 | static void gelic_net_pass_skb_up(struct gelic_descr *descr, |
589866f9 MM |
922 | struct gelic_card *card, |
923 | struct net_device *netdev) | |
924 | ||
02c18891 | 925 | { |
589866f9 | 926 | struct sk_buff *skb = descr->skb; |
02c18891 MM |
927 | u32 data_status, data_error; |
928 | ||
100e1d89 MM |
929 | data_status = be32_to_cpu(descr->data_status); |
930 | data_error = be32_to_cpu(descr->data_error); | |
02c18891 | 931 | /* unmap skb buffer */ |
589866f9 MM |
932 | dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr), |
933 | GELIC_NET_MAX_MTU, | |
02c18891 MM |
934 | DMA_FROM_DEVICE); |
935 | ||
589866f9 | 936 | skb_put(skb, be32_to_cpu(descr->valid_size)? |
100e1d89 MM |
937 | be32_to_cpu(descr->valid_size) : |
938 | be32_to_cpu(descr->result_size)); | |
02c18891 MM |
939 | if (!descr->valid_size) |
940 | dev_info(ctodev(card), "buffer full %x %x %x\n", | |
100e1d89 MM |
941 | be32_to_cpu(descr->result_size), |
942 | be32_to_cpu(descr->buf_size), | |
943 | be32_to_cpu(descr->dmac_cmd_status)); | |
02c18891 MM |
944 | |
945 | descr->skb = NULL; | |
946 | /* | |
947 | * the card put 2 bytes vlan tag in front | |
948 | * of the ethernet frame | |
949 | */ | |
950 | skb_pull(skb, 2); | |
951 | skb->protocol = eth_type_trans(skb, netdev); | |
952 | ||
953 | /* checksum offload */ | |
954 | if (card->rx_csum) { | |
59e97327 MM |
955 | if ((data_status & GELIC_DESCR_DATA_STATUS_CHK_MASK) && |
956 | (!(data_error & GELIC_DESCR_DATA_ERROR_CHK_MASK))) | |
02c18891 MM |
957 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
958 | else | |
959 | skb->ip_summed = CHECKSUM_NONE; | |
960 | } else | |
961 | skb->ip_summed = CHECKSUM_NONE; | |
962 | ||
963 | /* update netdevice statistics */ | |
589866f9 MM |
964 | netdev->stats.rx_packets++; |
965 | netdev->stats.rx_bytes += skb->len; | |
02c18891 MM |
966 | |
967 | /* pass skb up to stack */ | |
968 | netif_receive_skb(skb); | |
969 | } | |
970 | ||
971 | /** | |
59e97327 | 972 | * gelic_card_decode_one_descr - processes an rx descriptor |
02c18891 MM |
973 | * @card: card structure |
974 | * | |
975 | * returns 1 if a packet has been sent to the stack, otherwise 0 | |
976 | * | |
977 | * processes an rx descriptor by iommu-unmapping the data buffer and passing | |
978 | * the packet up to the stack | |
979 | */ | |
59e97327 | 980 | static int gelic_card_decode_one_descr(struct gelic_card *card) |
02c18891 | 981 | { |
59e97327 MM |
982 | enum gelic_descr_dma_status status; |
983 | struct gelic_descr_chain *chain = &card->rx_chain; | |
589866f9 MM |
984 | struct gelic_descr *descr = chain->head; |
985 | struct net_device *netdev = NULL; | |
02c18891 MM |
986 | int dmac_chain_ended; |
987 | ||
59e97327 | 988 | status = gelic_descr_get_status(descr); |
02c18891 MM |
989 | /* is this descriptor terminated with next_descr == NULL? */ |
990 | dmac_chain_ended = | |
100e1d89 | 991 | be32_to_cpu(descr->dmac_cmd_status) & |
59e97327 | 992 | GELIC_DESCR_RX_DMA_CHAIN_END; |
02c18891 | 993 | |
59e97327 | 994 | if (status == GELIC_DESCR_DMA_CARDOWNED) |
02c18891 MM |
995 | return 0; |
996 | ||
59e97327 | 997 | if (status == GELIC_DESCR_DMA_NOT_IN_USE) { |
02c18891 MM |
998 | dev_dbg(ctodev(card), "dormant descr? %p\n", descr); |
999 | return 0; | |
1000 | } | |
1001 | ||
589866f9 MM |
1002 | /* netdevice select */ |
1003 | if (card->vlan_required) { | |
1004 | unsigned int i; | |
1005 | u16 vid; | |
1006 | vid = *(u16 *)(descr->skb->data) & VLAN_VID_MASK; | |
1007 | for (i = 0; i < GELIC_PORT_MAX; i++) { | |
1008 | if (card->vlan[i].rx == vid) { | |
1009 | netdev = card->netdev[i]; | |
1010 | break; | |
1011 | } | |
1012 | }; | |
1013 | if (GELIC_PORT_MAX <= i) { | |
1014 | pr_info("%s: unknown packet vid=%x\n", __func__, vid); | |
1015 | goto refill; | |
1016 | } | |
1017 | } else | |
d4d7f1f9 | 1018 | netdev = card->netdev[GELIC_PORT_ETHERNET_0]; |
589866f9 | 1019 | |
59e97327 MM |
1020 | if ((status == GELIC_DESCR_DMA_RESPONSE_ERROR) || |
1021 | (status == GELIC_DESCR_DMA_PROTECTION_ERROR) || | |
1022 | (status == GELIC_DESCR_DMA_FORCE_END)) { | |
02c18891 MM |
1023 | dev_info(ctodev(card), "dropping RX descriptor with state %x\n", |
1024 | status); | |
589866f9 | 1025 | netdev->stats.rx_dropped++; |
02c18891 MM |
1026 | goto refill; |
1027 | } | |
1028 | ||
59e97327 | 1029 | if (status == GELIC_DESCR_DMA_BUFFER_FULL) { |
fe6d3a40 MM |
1030 | /* |
1031 | * Buffer full would occur if and only if | |
1032 | * the frame length was longer than the size of this | |
1033 | * descriptor's buffer. If the frame length was equal | |
1034 | * to or shorter than buffer'size, FRAME_END condition | |
1035 | * would occur. | |
1036 | * Anyway this frame was longer than the MTU, | |
1037 | * just drop it. | |
1038 | */ | |
1039 | dev_info(ctodev(card), "overlength frame\n"); | |
1040 | goto refill; | |
1041 | } | |
1042 | /* | |
1043 | * descriptoers any other than FRAME_END here should | |
1044 | * be treated as error. | |
1045 | */ | |
59e97327 | 1046 | if (status != GELIC_DESCR_DMA_FRAME_END) { |
02c18891 MM |
1047 | dev_dbg(ctodev(card), "RX descriptor with state %x\n", |
1048 | status); | |
1049 | goto refill; | |
1050 | } | |
1051 | ||
1052 | /* ok, we've got a packet in descr */ | |
589866f9 | 1053 | gelic_net_pass_skb_up(descr, card, netdev); |
02c18891 | 1054 | refill: |
fe6d3a40 MM |
1055 | /* |
1056 | * So that always DMAC can see the end | |
1057 | * of the descriptor chain to avoid | |
1058 | * from unwanted DMAC overrun. | |
1059 | */ | |
1060 | descr->next_descr_addr = 0; | |
02c18891 MM |
1061 | |
1062 | /* change the descriptor state: */ | |
59e97327 | 1063 | gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE); |
02c18891 | 1064 | |
fe6d3a40 MM |
1065 | /* |
1066 | * this call can fail, but for now, just leave this | |
1067 | * decriptor without skb | |
02c18891 | 1068 | */ |
59e97327 | 1069 | gelic_descr_prepare_rx(card, descr); |
fe6d3a40 | 1070 | |
589866f9 MM |
1071 | chain->tail = descr; |
1072 | chain->head = descr->next; | |
fe6d3a40 MM |
1073 | |
1074 | /* | |
1075 | * Set this descriptor the end of the chain. | |
1076 | */ | |
100e1d89 | 1077 | descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr); |
02c18891 | 1078 | |
fe6d3a40 MM |
1079 | /* |
1080 | * If dmac chain was met, DMAC stopped. | |
1081 | * thus re-enable it | |
1082 | */ | |
02c18891 | 1083 | if (dmac_chain_ended) { |
583aae10 MM |
1084 | card->rx_dma_restart_required = 1; |
1085 | dev_dbg(ctodev(card), "reenable rx dma scheduled\n"); | |
02c18891 MM |
1086 | } |
1087 | ||
1088 | return 1; | |
1089 | } | |
1090 | ||
1091 | /** | |
1092 | * gelic_net_poll - NAPI poll function called by the stack to return packets | |
589866f9 | 1093 | * @napi: napi structure |
02c18891 MM |
1094 | * @budget: number of packets we can pass to the stack at most |
1095 | * | |
589866f9 | 1096 | * returns the number of the processed packets |
02c18891 MM |
1097 | * |
1098 | */ | |
bea3348e | 1099 | static int gelic_net_poll(struct napi_struct *napi, int budget) |
02c18891 | 1100 | { |
59e97327 | 1101 | struct gelic_card *card = container_of(napi, struct gelic_card, napi); |
bea3348e | 1102 | int packets_done = 0; |
02c18891 | 1103 | |
bea3348e | 1104 | while (packets_done < budget) { |
59e97327 | 1105 | if (!gelic_card_decode_one_descr(card)) |
02c18891 | 1106 | break; |
bea3348e SH |
1107 | |
1108 | packets_done++; | |
02c18891 | 1109 | } |
bea3348e SH |
1110 | |
1111 | if (packets_done < budget) { | |
589866f9 | 1112 | napi_complete(napi); |
59e97327 | 1113 | gelic_card_rx_irq_on(card); |
bea3348e SH |
1114 | } |
1115 | return packets_done; | |
02c18891 | 1116 | } |
02c18891 MM |
1117 | /** |
1118 | * gelic_net_change_mtu - changes the MTU of an interface | |
1119 | * @netdev: interface device structure | |
1120 | * @new_mtu: new MTU value | |
1121 | * | |
1122 | * returns 0 on success, <0 on failure | |
1123 | */ | |
589866f9 | 1124 | int gelic_net_change_mtu(struct net_device *netdev, int new_mtu) |
02c18891 MM |
1125 | { |
1126 | /* no need to re-alloc skbs or so -- the max mtu is about 2.3k | |
1127 | * and mtu is outbound only anyway */ | |
1128 | if ((new_mtu < GELIC_NET_MIN_MTU) || | |
1129 | (new_mtu > GELIC_NET_MAX_MTU)) { | |
1130 | return -EINVAL; | |
1131 | } | |
1132 | netdev->mtu = new_mtu; | |
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | /** | |
59e97327 | 1137 | * gelic_card_interrupt - event handler for gelic_net |
02c18891 | 1138 | */ |
59e97327 | 1139 | static irqreturn_t gelic_card_interrupt(int irq, void *ptr) |
02c18891 MM |
1140 | { |
1141 | unsigned long flags; | |
589866f9 | 1142 | struct gelic_card *card = ptr; |
02c18891 MM |
1143 | u64 status; |
1144 | ||
1145 | status = card->irq_status; | |
1146 | ||
1147 | if (!status) | |
1148 | return IRQ_NONE; | |
1149 | ||
589866f9 MM |
1150 | status &= card->irq_mask; |
1151 | ||
583aae10 MM |
1152 | if (card->rx_dma_restart_required) { |
1153 | card->rx_dma_restart_required = 0; | |
59e97327 | 1154 | gelic_card_enable_rxdmac(card); |
583aae10 MM |
1155 | } |
1156 | ||
59e97327 MM |
1157 | if (status & GELIC_CARD_RXINT) { |
1158 | gelic_card_rx_irq_off(card); | |
589866f9 | 1159 | napi_schedule(&card->napi); |
02c18891 MM |
1160 | } |
1161 | ||
59e97327 | 1162 | if (status & GELIC_CARD_TXINT) { |
589866f9 | 1163 | spin_lock_irqsave(&card->tx_lock, flags); |
02c18891 | 1164 | card->tx_dma_progress = 0; |
59e97327 | 1165 | gelic_card_release_tx_chain(card, 0); |
48544cc2 | 1166 | /* kick outstanding tx descriptor if any */ |
59e97327 | 1167 | gelic_card_kick_txdma(card, card->tx_chain.tail); |
589866f9 | 1168 | spin_unlock_irqrestore(&card->tx_lock, flags); |
02c18891 | 1169 | } |
01fed4c2 MM |
1170 | |
1171 | /* ether port status changed */ | |
1172 | if (status & GELIC_CARD_PORT_STATUS_CHANGED) | |
1173 | gelic_card_get_ether_port_status(card, 1); | |
589866f9 | 1174 | |
09dde54c MM |
1175 | #ifdef CONFIG_GELIC_WIRELESS |
1176 | if (status & (GELIC_CARD_WLAN_EVENT_RECEIVED | | |
1177 | GELIC_CARD_WLAN_COMMAND_COMPLETED)) | |
1178 | gelic_wl_interrupt(card->netdev[GELIC_PORT_WIRELESS], status); | |
1179 | #endif | |
1180 | ||
02c18891 MM |
1181 | return IRQ_HANDLED; |
1182 | } | |
1183 | ||
1184 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1185 | /** | |
1186 | * gelic_net_poll_controller - artificial interrupt for netconsole etc. | |
1187 | * @netdev: interface device structure | |
1188 | * | |
1189 | * see Documentation/networking/netconsole.txt | |
1190 | */ | |
589866f9 | 1191 | void gelic_net_poll_controller(struct net_device *netdev) |
02c18891 | 1192 | { |
589866f9 | 1193 | struct gelic_card *card = netdev_card(netdev); |
02c18891 | 1194 | |
59e97327 MM |
1195 | gelic_card_set_irq_mask(card, 0); |
1196 | gelic_card_interrupt(netdev->irq, netdev); | |
589866f9 | 1197 | gelic_card_set_irq_mask(card, card->irq_mask); |
02c18891 MM |
1198 | } |
1199 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
1200 | ||
02c18891 MM |
1201 | /** |
1202 | * gelic_net_open - called upon ifonfig up | |
1203 | * @netdev: interface device structure | |
1204 | * | |
1205 | * returns 0 on success, <0 on failure | |
1206 | * | |
1207 | * gelic_net_open allocates all the descriptors and memory needed for | |
1208 | * operation, sets up multicast list and enables interrupts | |
1209 | */ | |
589866f9 | 1210 | int gelic_net_open(struct net_device *netdev) |
02c18891 | 1211 | { |
589866f9 | 1212 | struct gelic_card *card = netdev_card(netdev); |
02c18891 | 1213 | |
589866f9 | 1214 | dev_dbg(ctodev(card), " -> %s %p\n", __func__, netdev); |
02c18891 | 1215 | |
589866f9 | 1216 | gelic_card_up(card); |
02c18891 MM |
1217 | |
1218 | netif_start_queue(netdev); | |
01fed4c2 | 1219 | gelic_card_get_ether_port_status(card, 1); |
02c18891 | 1220 | |
589866f9 | 1221 | dev_dbg(ctodev(card), " <- %s\n", __func__); |
02c18891 | 1222 | return 0; |
02c18891 MM |
1223 | } |
1224 | ||
589866f9 MM |
1225 | void gelic_net_get_drvinfo(struct net_device *netdev, |
1226 | struct ethtool_drvinfo *info) | |
02c18891 MM |
1227 | { |
1228 | strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1); | |
1229 | strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1); | |
1230 | } | |
1231 | ||
59e97327 MM |
1232 | static int gelic_ether_get_settings(struct net_device *netdev, |
1233 | struct ethtool_cmd *cmd) | |
02c18891 | 1234 | { |
589866f9 | 1235 | struct gelic_card *card = netdev_card(netdev); |
02c18891 | 1236 | |
01fed4c2 MM |
1237 | gelic_card_get_ether_port_status(card, 0); |
1238 | ||
1239 | if (card->ether_port_status & GELIC_LV1_ETHER_FULL_DUPLEX) | |
1240 | cmd->duplex = DUPLEX_FULL; | |
1241 | else | |
1242 | cmd->duplex = DUPLEX_HALF; | |
1243 | ||
1244 | switch (card->ether_port_status & GELIC_LV1_ETHER_SPEED_MASK) { | |
1245 | case GELIC_LV1_ETHER_SPEED_10: | |
1246 | cmd->speed = SPEED_10; | |
1247 | break; | |
1248 | case GELIC_LV1_ETHER_SPEED_100: | |
1249 | cmd->speed = SPEED_100; | |
1250 | break; | |
1251 | case GELIC_LV1_ETHER_SPEED_1000: | |
1252 | cmd->speed = SPEED_1000; | |
1253 | break; | |
1254 | default: | |
1255 | pr_info("%s: speed unknown\n", __func__); | |
1256 | cmd->speed = SPEED_10; | |
1257 | break; | |
02c18891 | 1258 | } |
01fed4c2 | 1259 | |
02c18891 MM |
1260 | cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg | |
1261 | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | | |
1262 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | | |
55873ed8 | 1263 | SUPPORTED_1000baseT_Full; |
02c18891 | 1264 | cmd->advertising = cmd->supported; |
55873ed8 HS |
1265 | if (card->link_mode & GELIC_LV1_ETHER_AUTO_NEG) { |
1266 | cmd->autoneg = AUTONEG_ENABLE; | |
1267 | } else { | |
1268 | cmd->autoneg = AUTONEG_DISABLE; | |
1269 | cmd->advertising &= ~ADVERTISED_Autoneg; | |
1270 | } | |
02c18891 MM |
1271 | cmd->port = PORT_TP; |
1272 | ||
1273 | return 0; | |
1274 | } | |
1275 | ||
55873ed8 HS |
1276 | static int gelic_ether_set_settings(struct net_device *netdev, |
1277 | struct ethtool_cmd *cmd) | |
1278 | { | |
1279 | struct gelic_card *card = netdev_card(netdev); | |
1280 | u64 mode; | |
1281 | int ret; | |
1282 | ||
1283 | if (cmd->autoneg == AUTONEG_ENABLE) { | |
1284 | mode = GELIC_LV1_ETHER_AUTO_NEG; | |
1285 | } else { | |
1286 | switch (cmd->speed) { | |
1287 | case SPEED_10: | |
1288 | mode = GELIC_LV1_ETHER_SPEED_10; | |
1289 | break; | |
1290 | case SPEED_100: | |
1291 | mode = GELIC_LV1_ETHER_SPEED_100; | |
1292 | break; | |
1293 | case SPEED_1000: | |
1294 | mode = GELIC_LV1_ETHER_SPEED_1000; | |
1295 | break; | |
1296 | default: | |
1297 | return -EINVAL; | |
1298 | } | |
1299 | if (cmd->duplex == DUPLEX_FULL) | |
1300 | mode |= GELIC_LV1_ETHER_FULL_DUPLEX; | |
1301 | else if (cmd->speed == SPEED_1000) { | |
1302 | pr_info("1000 half duplex is not supported.\n"); | |
1303 | return -EINVAL; | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | ret = gelic_card_set_link_mode(card, mode); | |
1308 | ||
1309 | if (ret) | |
1310 | return ret; | |
1311 | ||
1312 | return 0; | |
1313 | } | |
1314 | ||
589866f9 | 1315 | u32 gelic_net_get_rx_csum(struct net_device *netdev) |
02c18891 | 1316 | { |
589866f9 | 1317 | struct gelic_card *card = netdev_card(netdev); |
02c18891 MM |
1318 | |
1319 | return card->rx_csum; | |
1320 | } | |
1321 | ||
589866f9 | 1322 | int gelic_net_set_rx_csum(struct net_device *netdev, u32 data) |
02c18891 | 1323 | { |
589866f9 | 1324 | struct gelic_card *card = netdev_card(netdev); |
02c18891 MM |
1325 | |
1326 | card->rx_csum = data; | |
1327 | return 0; | |
1328 | } | |
1329 | ||
3faac215 MM |
1330 | static void gelic_net_get_wol(struct net_device *netdev, |
1331 | struct ethtool_wolinfo *wol) | |
1332 | { | |
1333 | if (0 <= ps3_compare_firmware_version(2, 2, 0)) | |
1334 | wol->supported = WAKE_MAGIC; | |
1335 | else | |
1336 | wol->supported = 0; | |
1337 | ||
1338 | wol->wolopts = ps3_sys_manager_get_wol() ? wol->supported : 0; | |
1339 | memset(&wol->sopass, 0, sizeof(wol->sopass)); | |
1340 | } | |
1341 | static int gelic_net_set_wol(struct net_device *netdev, | |
1342 | struct ethtool_wolinfo *wol) | |
1343 | { | |
1344 | int status; | |
1345 | struct gelic_card *card; | |
1346 | u64 v1, v2; | |
1347 | ||
1348 | if (ps3_compare_firmware_version(2, 2, 0) < 0 || | |
1349 | !capable(CAP_NET_ADMIN)) | |
1350 | return -EPERM; | |
1351 | ||
1352 | if (wol->wolopts & ~WAKE_MAGIC) | |
1353 | return -EINVAL; | |
1354 | ||
1355 | card = netdev_card(netdev); | |
1356 | if (wol->wolopts & WAKE_MAGIC) { | |
1357 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1358 | GELIC_LV1_SET_WOL, | |
1359 | GELIC_LV1_WOL_MAGIC_PACKET, | |
1360 | 0, GELIC_LV1_WOL_MP_ENABLE, | |
1361 | &v1, &v2); | |
1362 | if (status) { | |
1363 | pr_info("%s: enabling WOL failed %d\n", __func__, | |
1364 | status); | |
1365 | status = -EIO; | |
1366 | goto done; | |
1367 | } | |
1368 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1369 | GELIC_LV1_SET_WOL, | |
1370 | GELIC_LV1_WOL_ADD_MATCH_ADDR, | |
1371 | 0, GELIC_LV1_WOL_MATCH_ALL, | |
1372 | &v1, &v2); | |
1373 | if (!status) | |
1374 | ps3_sys_manager_set_wol(1); | |
1375 | else { | |
1376 | pr_info("%s: enabling WOL filter failed %d\n", | |
1377 | __func__, status); | |
1378 | status = -EIO; | |
1379 | } | |
1380 | } else { | |
1381 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1382 | GELIC_LV1_SET_WOL, | |
1383 | GELIC_LV1_WOL_MAGIC_PACKET, | |
1384 | 0, GELIC_LV1_WOL_MP_DISABLE, | |
1385 | &v1, &v2); | |
1386 | if (status) { | |
1387 | pr_info("%s: disabling WOL failed %d\n", __func__, | |
1388 | status); | |
1389 | status = -EIO; | |
1390 | goto done; | |
1391 | } | |
1392 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1393 | GELIC_LV1_SET_WOL, | |
1394 | GELIC_LV1_WOL_DELETE_MATCH_ADDR, | |
1395 | 0, GELIC_LV1_WOL_MATCH_ALL, | |
1396 | &v1, &v2); | |
1397 | if (!status) | |
1398 | ps3_sys_manager_set_wol(0); | |
1399 | else { | |
1400 | pr_info("%s: removing WOL filter failed %d\n", | |
1401 | __func__, status); | |
1402 | status = -EIO; | |
1403 | } | |
1404 | } | |
1405 | done: | |
1406 | return status; | |
1407 | } | |
1408 | ||
0fc0b732 | 1409 | static const struct ethtool_ops gelic_ether_ethtool_ops = { |
02c18891 | 1410 | .get_drvinfo = gelic_net_get_drvinfo, |
59e97327 | 1411 | .get_settings = gelic_ether_get_settings, |
55873ed8 | 1412 | .set_settings = gelic_ether_set_settings, |
7bc56b92 | 1413 | .get_link = ethtool_op_get_link, |
7bc56b92 MM |
1414 | .get_tx_csum = ethtool_op_get_tx_csum, |
1415 | .set_tx_csum = ethtool_op_set_tx_csum, | |
02c18891 MM |
1416 | .get_rx_csum = gelic_net_get_rx_csum, |
1417 | .set_rx_csum = gelic_net_set_rx_csum, | |
3faac215 MM |
1418 | .get_wol = gelic_net_get_wol, |
1419 | .set_wol = gelic_net_set_wol, | |
02c18891 | 1420 | }; |
02c18891 MM |
1421 | |
1422 | /** | |
1423 | * gelic_net_tx_timeout_task - task scheduled by the watchdog timeout | |
1424 | * function (to be called not under interrupt status) | |
1425 | * @work: work is context of tx timout task | |
1426 | * | |
1427 | * called as task when tx hangs, resets interface (if interface is up) | |
1428 | */ | |
1429 | static void gelic_net_tx_timeout_task(struct work_struct *work) | |
1430 | { | |
59e97327 MM |
1431 | struct gelic_card *card = |
1432 | container_of(work, struct gelic_card, tx_timeout_task); | |
d4d7f1f9 | 1433 | struct net_device *netdev = card->netdev[GELIC_PORT_ETHERNET_0]; |
02c18891 | 1434 | |
583d077d | 1435 | dev_info(ctodev(card), "%s:Timed out. Restarting...\n", __func__); |
02c18891 MM |
1436 | |
1437 | if (!(netdev->flags & IFF_UP)) | |
1438 | goto out; | |
1439 | ||
1440 | netif_device_detach(netdev); | |
1441 | gelic_net_stop(netdev); | |
1442 | ||
1443 | gelic_net_open(netdev); | |
1444 | netif_device_attach(netdev); | |
1445 | ||
1446 | out: | |
1447 | atomic_dec(&card->tx_timeout_task_counter); | |
1448 | } | |
1449 | ||
1450 | /** | |
1451 | * gelic_net_tx_timeout - called when the tx timeout watchdog kicks in. | |
1452 | * @netdev: interface device structure | |
1453 | * | |
1454 | * called, if tx hangs. Schedules a task that resets the interface | |
1455 | */ | |
589866f9 | 1456 | void gelic_net_tx_timeout(struct net_device *netdev) |
02c18891 | 1457 | { |
59e97327 | 1458 | struct gelic_card *card; |
02c18891 | 1459 | |
589866f9 | 1460 | card = netdev_card(netdev); |
02c18891 MM |
1461 | atomic_inc(&card->tx_timeout_task_counter); |
1462 | if (netdev->flags & IFF_UP) | |
1463 | schedule_work(&card->tx_timeout_task); | |
1464 | else | |
1465 | atomic_dec(&card->tx_timeout_task_counter); | |
1466 | } | |
1467 | ||
5384e836 MM |
1468 | static const struct net_device_ops gelic_netdevice_ops = { |
1469 | .ndo_open = gelic_net_open, | |
1470 | .ndo_stop = gelic_net_stop, | |
1471 | .ndo_start_xmit = gelic_net_xmit, | |
1472 | .ndo_set_multicast_list = gelic_net_set_multi, | |
1473 | .ndo_change_mtu = gelic_net_change_mtu, | |
1474 | .ndo_tx_timeout = gelic_net_tx_timeout, | |
240c102d | 1475 | .ndo_set_mac_address = eth_mac_addr, |
5384e836 MM |
1476 | .ndo_validate_addr = eth_validate_addr, |
1477 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1478 | .ndo_poll_controller = gelic_net_poll_controller, | |
1479 | #endif | |
1480 | }; | |
1481 | ||
02c18891 | 1482 | /** |
59e97327 | 1483 | * gelic_ether_setup_netdev_ops - initialization of net_device operations |
02c18891 MM |
1484 | * @netdev: net_device structure |
1485 | * | |
1486 | * fills out function pointers in the net_device structure | |
1487 | */ | |
48dce82c GU |
1488 | static void __devinit gelic_ether_setup_netdev_ops(struct net_device *netdev, |
1489 | struct napi_struct *napi) | |
02c18891 | 1490 | { |
02c18891 | 1491 | netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT; |
589866f9 MM |
1492 | /* NAPI */ |
1493 | netif_napi_add(netdev, napi, | |
1494 | gelic_net_poll, GELIC_NET_NAPI_WEIGHT); | |
1495 | netdev->ethtool_ops = &gelic_ether_ethtool_ops; | |
5384e836 | 1496 | netdev->netdev_ops = &gelic_netdevice_ops; |
02c18891 MM |
1497 | } |
1498 | ||
1499 | /** | |
589866f9 MM |
1500 | * gelic_ether_setup_netdev - initialization of net_device |
1501 | * @netdev: net_device structure | |
02c18891 MM |
1502 | * @card: card structure |
1503 | * | |
1504 | * Returns 0 on success or <0 on failure | |
1505 | * | |
589866f9 MM |
1506 | * gelic_ether_setup_netdev initializes the net_device structure |
1507 | * and register it. | |
02c18891 | 1508 | **/ |
48dce82c GU |
1509 | int __devinit gelic_net_setup_netdev(struct net_device *netdev, |
1510 | struct gelic_card *card) | |
02c18891 | 1511 | { |
02c18891 MM |
1512 | int status; |
1513 | u64 v1, v2; | |
1514 | ||
02c18891 MM |
1515 | netdev->features = NETIF_F_IP_CSUM; |
1516 | ||
1517 | status = lv1_net_control(bus_id(card), dev_id(card), | |
59e97327 | 1518 | GELIC_LV1_GET_MAC_ADDRESS, |
02c18891 | 1519 | 0, 0, 0, &v1, &v2); |
589866f9 | 1520 | v1 <<= 16; |
02c18891 MM |
1521 | if (status || !is_valid_ether_addr((u8 *)&v1)) { |
1522 | dev_info(ctodev(card), | |
1523 | "%s:lv1_net_control GET_MAC_ADDR failed %d\n", | |
1524 | __func__, status); | |
1525 | return -EINVAL; | |
1526 | } | |
589866f9 | 1527 | memcpy(netdev->dev_addr, &v1, ETH_ALEN); |
173261ed | 1528 | |
589866f9 | 1529 | if (card->vlan_required) { |
173261ed | 1530 | netdev->hard_header_len += VLAN_HLEN; |
589866f9 MM |
1531 | /* |
1532 | * As vlan is internally used, | |
1533 | * we can not receive vlan packets | |
1534 | */ | |
1535 | netdev->features |= NETIF_F_VLAN_CHALLENGED; | |
173261ed | 1536 | } |
02c18891 MM |
1537 | |
1538 | status = register_netdev(netdev); | |
1539 | if (status) { | |
589866f9 MM |
1540 | dev_err(ctodev(card), "%s:Couldn't register %s %d\n", |
1541 | __func__, netdev->name, status); | |
02c18891 MM |
1542 | return status; |
1543 | } | |
e174961c JB |
1544 | dev_info(ctodev(card), "%s: MAC addr %pM\n", |
1545 | netdev->name, netdev->dev_addr); | |
02c18891 MM |
1546 | |
1547 | return 0; | |
1548 | } | |
1549 | ||
1550 | /** | |
59e97327 | 1551 | * gelic_alloc_card_net - allocates net_device and card structure |
02c18891 MM |
1552 | * |
1553 | * returns the card structure or NULL in case of errors | |
1554 | * | |
1555 | * the card and net_device structures are linked to each other | |
1556 | */ | |
589866f9 | 1557 | #define GELIC_ALIGN (32) |
48dce82c | 1558 | static struct gelic_card * __devinit gelic_alloc_card_net(struct net_device **netdev) |
02c18891 | 1559 | { |
59e97327 | 1560 | struct gelic_card *card; |
589866f9 MM |
1561 | struct gelic_port *port; |
1562 | void *p; | |
02c18891 | 1563 | size_t alloc_size; |
02c18891 | 1564 | /* |
589866f9 MM |
1565 | * gelic requires dma descriptor is 32 bytes aligned and |
1566 | * the hypervisor requires irq_status is 8 bytes aligned. | |
02c18891 | 1567 | */ |
59e97327 MM |
1568 | BUILD_BUG_ON(offsetof(struct gelic_card, irq_status) % 8); |
1569 | BUILD_BUG_ON(offsetof(struct gelic_card, descr) % 32); | |
589866f9 MM |
1570 | alloc_size = |
1571 | sizeof(struct gelic_card) + | |
1572 | sizeof(struct gelic_descr) * GELIC_NET_RX_DESCRIPTORS + | |
1573 | sizeof(struct gelic_descr) * GELIC_NET_TX_DESCRIPTORS + | |
1574 | GELIC_ALIGN - 1; | |
02c18891 | 1575 | |
589866f9 MM |
1576 | p = kzalloc(alloc_size, GFP_KERNEL); |
1577 | if (!p) | |
02c18891 | 1578 | return NULL; |
589866f9 MM |
1579 | card = PTR_ALIGN(p, GELIC_ALIGN); |
1580 | card->unalign = p; | |
1581 | ||
1582 | /* | |
1583 | * alloc netdev | |
1584 | */ | |
1585 | *netdev = alloc_etherdev(sizeof(struct gelic_port)); | |
1586 | if (!netdev) { | |
1587 | kfree(card->unalign); | |
1588 | return NULL; | |
1589 | } | |
1590 | port = netdev_priv(*netdev); | |
1591 | ||
1592 | /* gelic_port */ | |
1593 | port->netdev = *netdev; | |
1594 | port->card = card; | |
d4d7f1f9 | 1595 | port->type = GELIC_PORT_ETHERNET_0; |
589866f9 MM |
1596 | |
1597 | /* gelic_card */ | |
d4d7f1f9 | 1598 | card->netdev[GELIC_PORT_ETHERNET_0] = *netdev; |
02c18891 | 1599 | |
02c18891 MM |
1600 | INIT_WORK(&card->tx_timeout_task, gelic_net_tx_timeout_task); |
1601 | init_waitqueue_head(&card->waitq); | |
1602 | atomic_set(&card->tx_timeout_task_counter, 0); | |
2914f3ef | 1603 | mutex_init(&card->updown_lock); |
589866f9 | 1604 | atomic_set(&card->users, 0); |
02c18891 MM |
1605 | |
1606 | return card; | |
1607 | } | |
1608 | ||
48dce82c | 1609 | static void __devinit gelic_card_get_vlan_info(struct gelic_card *card) |
589866f9 MM |
1610 | { |
1611 | u64 v1, v2; | |
1612 | int status; | |
1613 | unsigned int i; | |
1614 | struct { | |
1615 | int tx; | |
1616 | int rx; | |
1617 | } vlan_id_ix[2] = { | |
d4d7f1f9 GL |
1618 | [GELIC_PORT_ETHERNET_0] = { |
1619 | .tx = GELIC_LV1_VLAN_TX_ETHERNET_0, | |
1620 | .rx = GELIC_LV1_VLAN_RX_ETHERNET_0 | |
589866f9 MM |
1621 | }, |
1622 | [GELIC_PORT_WIRELESS] = { | |
1623 | .tx = GELIC_LV1_VLAN_TX_WIRELESS, | |
1624 | .rx = GELIC_LV1_VLAN_RX_WIRELESS | |
1625 | } | |
1626 | }; | |
1627 | ||
1628 | for (i = 0; i < ARRAY_SIZE(vlan_id_ix); i++) { | |
1629 | /* tx tag */ | |
1630 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1631 | GELIC_LV1_GET_VLAN_ID, | |
1632 | vlan_id_ix[i].tx, | |
1633 | 0, 0, &v1, &v2); | |
1634 | if (status || !v1) { | |
1635 | if (status != LV1_NO_ENTRY) | |
1636 | dev_dbg(ctodev(card), | |
1637 | "get vlan id for tx(%d) failed(%d)\n", | |
1638 | vlan_id_ix[i].tx, status); | |
1639 | card->vlan[i].tx = 0; | |
1640 | card->vlan[i].rx = 0; | |
1641 | continue; | |
1642 | } | |
1643 | card->vlan[i].tx = (u16)v1; | |
1644 | ||
1645 | /* rx tag */ | |
1646 | status = lv1_net_control(bus_id(card), dev_id(card), | |
1647 | GELIC_LV1_GET_VLAN_ID, | |
1648 | vlan_id_ix[i].rx, | |
1649 | 0, 0, &v1, &v2); | |
1650 | if (status || !v1) { | |
1651 | if (status != LV1_NO_ENTRY) | |
1652 | dev_info(ctodev(card), | |
1653 | "get vlan id for rx(%d) failed(%d)\n", | |
1654 | vlan_id_ix[i].rx, status); | |
1655 | card->vlan[i].tx = 0; | |
1656 | card->vlan[i].rx = 0; | |
1657 | continue; | |
1658 | } | |
1659 | card->vlan[i].rx = (u16)v1; | |
1660 | ||
1661 | dev_dbg(ctodev(card), "vlan_id[%d] tx=%02x rx=%02x\n", | |
1662 | i, card->vlan[i].tx, card->vlan[i].rx); | |
1663 | } | |
1664 | ||
d4d7f1f9 | 1665 | if (card->vlan[GELIC_PORT_ETHERNET_0].tx) { |
589866f9 MM |
1666 | BUG_ON(!card->vlan[GELIC_PORT_WIRELESS].tx); |
1667 | card->vlan_required = 1; | |
1668 | } else | |
1669 | card->vlan_required = 0; | |
1670 | ||
1671 | /* check wirelss capable firmware */ | |
1672 | if (ps3_compare_firmware_version(1, 6, 0) < 0) { | |
1673 | card->vlan[GELIC_PORT_WIRELESS].tx = 0; | |
1674 | card->vlan[GELIC_PORT_WIRELESS].rx = 0; | |
1675 | } | |
1676 | ||
1677 | dev_info(ctodev(card), "internal vlan %s\n", | |
1678 | card->vlan_required? "enabled" : "disabled"); | |
1679 | } | |
02c18891 MM |
1680 | /** |
1681 | * ps3_gelic_driver_probe - add a device to the control of this driver | |
1682 | */ | |
48dce82c | 1683 | static int __devinit ps3_gelic_driver_probe(struct ps3_system_bus_device *dev) |
02c18891 | 1684 | { |
589866f9 MM |
1685 | struct gelic_card *card; |
1686 | struct net_device *netdev; | |
02c18891 MM |
1687 | int result; |
1688 | ||
589866f9 | 1689 | pr_debug("%s: called\n", __func__); |
02c18891 MM |
1690 | result = ps3_open_hv_device(dev); |
1691 | ||
1692 | if (result) { | |
589866f9 MM |
1693 | dev_dbg(&dev->core, "%s:ps3_open_hv_device failed\n", |
1694 | __func__); | |
02c18891 MM |
1695 | goto fail_open; |
1696 | } | |
1697 | ||
1698 | result = ps3_dma_region_create(dev->d_region); | |
1699 | ||
1700 | if (result) { | |
589866f9 MM |
1701 | dev_dbg(&dev->core, "%s:ps3_dma_region_create failed(%d)\n", |
1702 | __func__, result); | |
02c18891 MM |
1703 | BUG_ON("check region type"); |
1704 | goto fail_dma_region; | |
1705 | } | |
1706 | ||
589866f9 MM |
1707 | /* alloc card/netdevice */ |
1708 | card = gelic_alloc_card_net(&netdev); | |
1709 | if (!card) { | |
1710 | dev_info(&dev->core, "%s:gelic_net_alloc_card failed\n", | |
1711 | __func__); | |
1712 | result = -ENOMEM; | |
1713 | goto fail_alloc_card; | |
1714 | } | |
03fa68c2 | 1715 | ps3_system_bus_set_drvdata(dev, card); |
589866f9 MM |
1716 | card->dev = dev; |
1717 | ||
1718 | /* get internal vlan info */ | |
1719 | gelic_card_get_vlan_info(card); | |
1720 | ||
55873ed8 HS |
1721 | card->link_mode = GELIC_LV1_ETHER_AUTO_NEG; |
1722 | ||
589866f9 | 1723 | /* setup interrupt */ |
02c18891 MM |
1724 | result = lv1_net_set_interrupt_status_indicator(bus_id(card), |
1725 | dev_id(card), | |
1726 | ps3_mm_phys_to_lpar(__pa(&card->irq_status)), | |
1727 | 0); | |
1728 | ||
1729 | if (result) { | |
1730 | dev_dbg(&dev->core, | |
589866f9 MM |
1731 | "%s:set_interrupt_status_indicator failed: %s\n", |
1732 | __func__, ps3_result(result)); | |
02c18891 MM |
1733 | result = -EIO; |
1734 | goto fail_status_indicator; | |
1735 | } | |
1736 | ||
589866f9 MM |
1737 | result = ps3_sb_event_receive_port_setup(dev, PS3_BINDING_CPU_ANY, |
1738 | &card->irq); | |
1739 | ||
1740 | if (result) { | |
1741 | dev_info(ctodev(card), | |
1742 | "%s:gelic_net_open_device failed (%d)\n", | |
1743 | __func__, result); | |
1744 | result = -EPERM; | |
1745 | goto fail_alloc_irq; | |
1746 | } | |
1747 | result = request_irq(card->irq, gelic_card_interrupt, | |
1748 | IRQF_DISABLED, netdev->name, card); | |
1749 | ||
1750 | if (result) { | |
1751 | dev_info(ctodev(card), "%s:request_irq failed (%d)\n", | |
1752 | __func__, result); | |
1753 | goto fail_request_irq; | |
1754 | } | |
1755 | ||
1756 | /* setup card structure */ | |
1757 | card->irq_mask = GELIC_CARD_RXINT | GELIC_CARD_TXINT | | |
1758 | GELIC_CARD_PORT_STATUS_CHANGED; | |
1759 | card->rx_csum = GELIC_CARD_RX_CSUM_DEFAULT; | |
1760 | ||
1761 | ||
1762 | if (gelic_card_init_chain(card, &card->tx_chain, | |
1763 | card->descr, GELIC_NET_TX_DESCRIPTORS)) | |
1764 | goto fail_alloc_tx; | |
1765 | if (gelic_card_init_chain(card, &card->rx_chain, | |
1766 | card->descr + GELIC_NET_TX_DESCRIPTORS, | |
1767 | GELIC_NET_RX_DESCRIPTORS)) | |
1768 | goto fail_alloc_rx; | |
1769 | ||
1770 | /* head of chain */ | |
1771 | card->tx_top = card->tx_chain.head; | |
1772 | card->rx_top = card->rx_chain.head; | |
1773 | dev_dbg(ctodev(card), "descr rx %p, tx %p, size %#lx, num %#x\n", | |
1774 | card->rx_top, card->tx_top, sizeof(struct gelic_descr), | |
1775 | GELIC_NET_RX_DESCRIPTORS); | |
1776 | /* allocate rx skbs */ | |
1777 | if (gelic_card_alloc_rx_skbs(card)) | |
1778 | goto fail_alloc_skbs; | |
1779 | ||
1780 | spin_lock_init(&card->tx_lock); | |
1781 | card->tx_dma_progress = 0; | |
02c18891 | 1782 | |
589866f9 MM |
1783 | /* setup net_device structure */ |
1784 | netdev->irq = card->irq; | |
1785 | SET_NETDEV_DEV(netdev, &card->dev->core); | |
1786 | gelic_ether_setup_netdev_ops(netdev, &card->napi); | |
1787 | result = gelic_net_setup_netdev(netdev, card); | |
02c18891 | 1788 | if (result) { |
589866f9 MM |
1789 | dev_dbg(&dev->core, "%s: setup_netdev failed %d", |
1790 | __func__, result); | |
02c18891 MM |
1791 | goto fail_setup_netdev; |
1792 | } | |
1793 | ||
09dde54c MM |
1794 | #ifdef CONFIG_GELIC_WIRELESS |
1795 | if (gelic_wl_driver_probe(card)) { | |
1796 | dev_dbg(&dev->core, "%s: WL init failed\n", __func__); | |
1797 | goto fail_setup_netdev; | |
1798 | } | |
1799 | #endif | |
589866f9 | 1800 | pr_debug("%s: done\n", __func__); |
02c18891 MM |
1801 | return 0; |
1802 | ||
1803 | fail_setup_netdev: | |
589866f9 MM |
1804 | fail_alloc_skbs: |
1805 | gelic_card_free_chain(card, card->rx_chain.head); | |
1806 | fail_alloc_rx: | |
1807 | gelic_card_free_chain(card, card->tx_chain.head); | |
1808 | fail_alloc_tx: | |
1809 | free_irq(card->irq, card); | |
1810 | netdev->irq = NO_IRQ; | |
1811 | fail_request_irq: | |
1812 | ps3_sb_event_receive_port_destroy(dev, card->irq); | |
1813 | fail_alloc_irq: | |
02c18891 | 1814 | lv1_net_set_interrupt_status_indicator(bus_id(card), |
589866f9 MM |
1815 | bus_id(card), |
1816 | 0, 0); | |
02c18891 | 1817 | fail_status_indicator: |
03fa68c2 | 1818 | ps3_system_bus_set_drvdata(dev, NULL); |
589866f9 MM |
1819 | kfree(netdev_card(netdev)->unalign); |
1820 | free_netdev(netdev); | |
1821 | fail_alloc_card: | |
02c18891 MM |
1822 | ps3_dma_region_free(dev->d_region); |
1823 | fail_dma_region: | |
1824 | ps3_close_hv_device(dev); | |
1825 | fail_open: | |
02c18891 MM |
1826 | return result; |
1827 | } | |
1828 | ||
1829 | /** | |
1830 | * ps3_gelic_driver_remove - remove a device from the control of this driver | |
1831 | */ | |
1832 | ||
59e97327 | 1833 | static int ps3_gelic_driver_remove(struct ps3_system_bus_device *dev) |
02c18891 | 1834 | { |
03fa68c2 | 1835 | struct gelic_card *card = ps3_system_bus_get_drvdata(dev); |
589866f9 MM |
1836 | struct net_device *netdev0; |
1837 | pr_debug("%s: called\n", __func__); | |
1838 | ||
55873ed8 HS |
1839 | /* set auto-negotiation */ |
1840 | gelic_card_set_link_mode(card, GELIC_LV1_ETHER_AUTO_NEG); | |
1841 | ||
09dde54c MM |
1842 | #ifdef CONFIG_GELIC_WIRELESS |
1843 | gelic_wl_driver_remove(card); | |
1844 | #endif | |
589866f9 MM |
1845 | /* stop interrupt */ |
1846 | gelic_card_set_irq_mask(card, 0); | |
1847 | ||
1848 | /* turn off DMA, force end */ | |
1849 | gelic_card_disable_rxdmac(card); | |
1850 | gelic_card_disable_txdmac(card); | |
1851 | ||
1852 | /* release chains */ | |
1853 | gelic_card_release_tx_chain(card, 1); | |
1854 | gelic_card_release_rx_chain(card); | |
1855 | ||
1856 | gelic_card_free_chain(card, card->tx_top); | |
1857 | gelic_card_free_chain(card, card->rx_top); | |
1858 | ||
d4d7f1f9 | 1859 | netdev0 = card->netdev[GELIC_PORT_ETHERNET_0]; |
589866f9 MM |
1860 | /* disconnect event port */ |
1861 | free_irq(card->irq, card); | |
1862 | netdev0->irq = NO_IRQ; | |
1863 | ps3_sb_event_receive_port_destroy(card->dev, card->irq); | |
02c18891 MM |
1864 | |
1865 | wait_event(card->waitq, | |
1866 | atomic_read(&card->tx_timeout_task_counter) == 0); | |
1867 | ||
1868 | lv1_net_set_interrupt_status_indicator(bus_id(card), dev_id(card), | |
1869 | 0 , 0); | |
1870 | ||
589866f9 MM |
1871 | unregister_netdev(netdev0); |
1872 | kfree(netdev_card(netdev0)->unalign); | |
1873 | free_netdev(netdev0); | |
02c18891 | 1874 | |
03fa68c2 | 1875 | ps3_system_bus_set_drvdata(dev, NULL); |
02c18891 MM |
1876 | |
1877 | ps3_dma_region_free(dev->d_region); | |
1878 | ||
1879 | ps3_close_hv_device(dev); | |
1880 | ||
589866f9 | 1881 | pr_debug("%s: done\n", __func__); |
02c18891 MM |
1882 | return 0; |
1883 | } | |
1884 | ||
1885 | static struct ps3_system_bus_driver ps3_gelic_driver = { | |
1886 | .match_id = PS3_MATCH_ID_GELIC, | |
1887 | .probe = ps3_gelic_driver_probe, | |
1888 | .remove = ps3_gelic_driver_remove, | |
1889 | .shutdown = ps3_gelic_driver_remove, | |
1890 | .core.name = "ps3_gelic_driver", | |
1891 | .core.owner = THIS_MODULE, | |
1892 | }; | |
1893 | ||
1894 | static int __init ps3_gelic_driver_init (void) | |
1895 | { | |
1896 | return firmware_has_feature(FW_FEATURE_PS3_LV1) | |
1897 | ? ps3_system_bus_driver_register(&ps3_gelic_driver) | |
1898 | : -ENODEV; | |
1899 | } | |
1900 | ||
1901 | static void __exit ps3_gelic_driver_exit (void) | |
1902 | { | |
1903 | ps3_system_bus_driver_unregister(&ps3_gelic_driver); | |
1904 | } | |
1905 | ||
59e97327 MM |
1906 | module_init(ps3_gelic_driver_init); |
1907 | module_exit(ps3_gelic_driver_exit); | |
02c18891 MM |
1908 | |
1909 | MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC); | |
1910 |