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Masakazu Mokuno02c18892007-07-05 20:11:16 +09001/*
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>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090033#include <linux/slab.h>
Masakazu Mokuno02c18892007-07-05 20:11:16 +090034
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"
Masakazu Mokuno09dde542008-02-07 19:58:57 +090050#include "ps3_gelic_wireless.h"
Masakazu Mokuno02c18892007-07-05 20:11:16 +090051
52#define DRV_NAME "Gelic Network Driver"
Masakazu Mokuno09dde542008-02-07 19:58:57 +090053#define DRV_VERSION "2.0"
Masakazu Mokuno02c18892007-07-05 20:11:16 +090054
55MODULE_AUTHOR("SCE Inc.");
56MODULE_DESCRIPTION("Gelic Network driver");
57MODULE_LICENSE("GPL");
58
Masakazu Mokuno589866f2008-02-07 19:58:42 +090059
60static inline void gelic_card_enable_rxdmac(struct gelic_card *card);
61static inline void gelic_card_disable_rxdmac(struct gelic_card *card);
62static inline void gelic_card_disable_txdmac(struct gelic_card *card);
63static inline void gelic_card_reset_chain(struct gelic_card *card,
64 struct gelic_descr_chain *chain,
65 struct gelic_descr *start_descr);
Masakazu Mokuno02c18892007-07-05 20:11:16 +090066
67/* set irq_mask */
Masakazu Mokuno589866f2008-02-07 19:58:42 +090068int gelic_card_set_irq_mask(struct gelic_card *card, u64 mask)
Masakazu Mokuno02c18892007-07-05 20:11:16 +090069{
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),
Masakazu Mokuno589866f2008-02-07 19:58:42 +090076 "%s failed %d\n", __func__, status);
Masakazu Mokuno02c18892007-07-05 20:11:16 +090077 return status;
78}
Masakazu Mokuno589866f2008-02-07 19:58:42 +090079
Masakazu Mokuno59e97322008-02-07 19:58:08 +090080static inline void gelic_card_rx_irq_on(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +090081{
Masakazu Mokuno589866f2008-02-07 19:58:42 +090082 card->irq_mask |= GELIC_CARD_RXINT;
83 gelic_card_set_irq_mask(card, card->irq_mask);
Masakazu Mokuno02c18892007-07-05 20:11:16 +090084}
Masakazu Mokuno59e97322008-02-07 19:58:08 +090085static inline void gelic_card_rx_irq_off(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +090086{
Masakazu Mokuno589866f2008-02-07 19:58:42 +090087 card->irq_mask &= ~GELIC_CARD_RXINT;
88 gelic_card_set_irq_mask(card, card->irq_mask);
Masakazu Mokuno02c18892007-07-05 20:11:16 +090089}
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +090090
Masakazu Mokuno589866f2008-02-07 19:58:42 +090091static void gelic_card_get_ether_port_status(struct gelic_card *card,
92 int inform)
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +090093{
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,
Geoff Levandd4d7f1f2009-12-01 12:15:53 +000099 GELIC_LV1_VLAN_TX_ETHERNET_0, 0, 0,
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +0900100 &card->ether_port_status, &v2);
101
102 if (inform) {
Geoff Levandd4d7f1f2009-12-01 12:15:53 +0000103 ether_netdev = card->netdev[GELIC_PORT_ETHERNET_0];
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +0900104 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
Hideyuki Sasaki55873ed2009-12-01 12:15:58 +0000111static 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
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900129void gelic_card_up(struct gelic_card *card)
130{
131 pr_debug("%s: called\n", __func__);
Daniel Walker2914f3e2008-05-22 00:00:03 -0700132 mutex_lock(&card->updown_lock);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900133 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 }
Daniel Walker2914f3e2008-05-22 00:00:03 -0700142 mutex_unlock(&card->updown_lock);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900143 pr_debug("%s: done\n", __func__);
144}
145
146void gelic_card_down(struct gelic_card *card)
147{
148 u64 mask;
149 pr_debug("%s: called\n", __func__);
Daniel Walker2914f3e2008-05-22 00:00:03 -0700150 mutex_lock(&card->updown_lock);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900151 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 }
Daniel Walker2914f3e2008-05-22 00:00:03 -0700168 mutex_unlock(&card->updown_lock);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900169 pr_debug("%s: done\n", __func__);
170}
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +0900171
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900172/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900173 * gelic_descr_get_status -- returns the status of a descriptor
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900174 * @descr: descriptor to look at
175 *
176 * returns the status as in the dmac_cmd_status field of the descriptor
177 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900178static enum gelic_descr_dma_status
179gelic_descr_get_status(struct gelic_descr *descr)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900180{
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900181 return be32_to_cpu(descr->dmac_cmd_status) & GELIC_DESCR_DMA_STAT_MASK;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900182}
183
184/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900185 * gelic_descr_set_status -- sets the status of a descriptor
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900186 * @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 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900192static void gelic_descr_set_status(struct gelic_descr *descr,
193 enum gelic_descr_dma_status status)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900194{
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900195 descr->dmac_cmd_status = cpu_to_be32(status |
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900196 (be32_to_cpu(descr->dmac_cmd_status) &
197 ~GELIC_DESCR_DMA_STAT_MASK));
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900198 /*
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/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900208 * gelic_card_free_chain - free descriptor chain
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900209 * @card: card structure
210 * @descr_in: address of desc
211 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900212static void gelic_card_free_chain(struct gelic_card *card,
213 struct gelic_descr *descr_in)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900214{
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900215 struct gelic_descr *descr;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900216
217 for (descr = descr_in; descr && descr->bus_addr; descr = descr->next) {
218 dma_unmap_single(ctodev(card), descr->bus_addr,
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900219 GELIC_DESCR_SIZE, DMA_BIDIRECTIONAL);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900220 descr->bus_addr = 0;
221 }
222}
223
224/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900225 * gelic_card_init_chain - links descriptor chain
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900226 * @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 */
Geert Uytterhoeven48dce822009-06-10 04:38:58 +0000236static 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)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900240{
241 int i;
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900242 struct gelic_descr *descr;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900243
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++) {
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900249 gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900250 descr->bus_addr =
251 dma_map_single(ctodev(card), descr,
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900252 GELIC_DESCR_SIZE,
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900253 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++) {
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900268 descr->next_descr_addr = cpu_to_be32(descr->next->bus_addr);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900269 }
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
279iommu_error:
280 for (i--, descr--; 0 <= i; i--, descr--)
281 if (descr->bus_addr)
282 dma_unmap_single(ctodev(card), descr->bus_addr,
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900283 GELIC_DESCR_SIZE,
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900284 DMA_BIDIRECTIONAL);
285 return -ENOMEM;
286}
287
288/**
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900289 * 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 */
297static 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}
313/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900314 * gelic_descr_prepare_rx - reinitializes a rx descriptor
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900315 * @card: card structure
316 * @descr: descriptor to re-init
317 *
André Goddard Rosaaf901ca2009-11-14 13:09:05 -0200318 * return 0 on success, <0 on failure
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900319 *
320 * allocates a new rx skb, iommu-maps it and attaches it to the descriptor.
321 * Activate the descriptor state-wise
322 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900323static int gelic_descr_prepare_rx(struct gelic_card *card,
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900324 struct gelic_descr *descr)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900325{
326 int offset;
327 unsigned int bufsize;
328
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900329 if (gelic_descr_get_status(descr) != GELIC_DESCR_DMA_NOT_IN_USE)
Frans Pop583d0772010-03-24 07:57:31 +0000330 dev_info(ctodev(card), "%s: ERROR status\n", __func__);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900331 /* 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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900336 descr->skb = dev_alloc_skb(bufsize + GELIC_NET_RXBUF_ALIGN - 1);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900337 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 }
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900343 descr->buf_size = cpu_to_be32(bufsize);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900344 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 */
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900354 descr->buf_addr = cpu_to_be32(dma_map_single(ctodev(card),
355 descr->skb->data,
356 GELIC_NET_MAX_MTU,
357 DMA_FROM_DEVICE));
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900358 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__);
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900363 gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900364 return -ENOMEM;
365 } else {
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900366 gelic_descr_set_status(descr, GELIC_DESCR_DMA_CARDOWNED);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900367 return 0;
368 }
369}
370
371/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900372 * gelic_card_release_rx_chain - free all skb of rx descr
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900373 * @card: card structure
374 *
375 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900376static void gelic_card_release_rx_chain(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900377{
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900378 struct gelic_descr *descr = card->rx_chain.head;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900379
380 do {
381 if (descr->skb) {
382 dma_unmap_single(ctodev(card),
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900383 be32_to_cpu(descr->buf_addr),
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900384 descr->skb->len,
385 DMA_FROM_DEVICE);
386 descr->buf_addr = 0;
387 dev_kfree_skb_any(descr->skb);
388 descr->skb = NULL;
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900389 gelic_descr_set_status(descr,
390 GELIC_DESCR_DMA_NOT_IN_USE);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900391 }
392 descr = descr->next;
393 } while (descr != card->rx_chain.head);
394}
395
396/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900397 * gelic_card_fill_rx_chain - fills descriptors/skbs in the rx chains
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900398 * @card: card structure
399 *
400 * fills all descriptors in the rx chain: allocates skbs
401 * and iommu-maps them.
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900402 * returns 0 on success, < 0 on failure
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900403 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900404static int gelic_card_fill_rx_chain(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900405{
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900406 struct gelic_descr *descr = card->rx_chain.head;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900407 int ret;
408
409 do {
410 if (!descr->skb) {
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900411 ret = gelic_descr_prepare_rx(card, descr);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900412 if (ret)
413 goto rewind;
414 }
415 descr = descr->next;
416 } while (descr != card->rx_chain.head);
417
418 return 0;
419rewind:
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900420 gelic_card_release_rx_chain(card);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900421 return ret;
422}
423
424/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900425 * gelic_card_alloc_rx_skbs - allocates rx skbs in rx descriptor chains
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900426 * @card: card structure
427 *
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900428 * returns 0 on success, < 0 on failure
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900429 */
Geert Uytterhoeven48dce822009-06-10 04:38:58 +0000430static int __devinit gelic_card_alloc_rx_skbs(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900431{
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900432 struct gelic_descr_chain *chain;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900433 int ret;
434 chain = &card->rx_chain;
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900435 ret = gelic_card_fill_rx_chain(card);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900436 chain->tail = card->rx_top->prev; /* point to the last */
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900437 return ret;
438}
439
440/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900441 * gelic_descr_release_tx - processes a used tx descriptor
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900442 * @card: card structure
443 * @descr: descriptor to release
444 *
445 * releases a used tx descriptor (unmapping, freeing of skb)
446 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900447static void gelic_descr_release_tx(struct gelic_card *card,
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900448 struct gelic_descr *descr)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900449{
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900450 struct sk_buff *skb = descr->skb;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900451
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900452 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);
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900456 dev_kfree_skb_any(skb);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900457
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 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900468 gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900469}
470
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900471static void gelic_card_stop_queues(struct gelic_card *card)
472{
Geoff Levandd4d7f1f2009-12-01 12:15:53 +0000473 netif_stop_queue(card->netdev[GELIC_PORT_ETHERNET_0]);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900474
475 if (card->netdev[GELIC_PORT_WIRELESS])
476 netif_stop_queue(card->netdev[GELIC_PORT_WIRELESS]);
477}
478static void gelic_card_wake_queues(struct gelic_card *card)
479{
Geoff Levandd4d7f1f2009-12-01 12:15:53 +0000480 netif_wake_queue(card->netdev[GELIC_PORT_ETHERNET_0]);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900481
482 if (card->netdev[GELIC_PORT_WIRELESS])
483 netif_wake_queue(card->netdev[GELIC_PORT_WIRELESS]);
484}
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900485/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900486 * gelic_card_release_tx_chain - processes sent tx descriptors
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900487 * @card: adapter structure
488 * @stop: net_stop sequence
489 *
490 * releases the tx descriptors that gelic has finished with
491 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900492static void gelic_card_release_tx_chain(struct gelic_card *card, int stop)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900493{
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900494 struct gelic_descr_chain *tx_chain;
495 enum gelic_descr_dma_status status;
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900496 struct net_device *netdev;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900497 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) {
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900502 status = gelic_descr_get_status(tx_chain->tail);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900503 netdev = tx_chain->tail->skb->dev;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900504 switch (status) {
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900505 case GELIC_DESCR_DMA_RESPONSE_ERROR:
506 case GELIC_DESCR_DMA_PROTECTION_ERROR:
507 case GELIC_DESCR_DMA_FORCE_END:
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900508 if (printk_ratelimit())
509 dev_info(ctodev(card),
510 "%s: forcing end of tx descriptor " \
511 "with status %x\n",
512 __func__, status);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900513 netdev->stats.tx_dropped++;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900514 break;
515
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900516 case GELIC_DESCR_DMA_COMPLETE:
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900517 if (tx_chain->tail->skb) {
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900518 netdev->stats.tx_packets++;
519 netdev->stats.tx_bytes +=
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900520 tx_chain->tail->skb->len;
521 }
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900522 break;
523
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900524 case GELIC_DESCR_DMA_CARDOWNED:
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900525 /* pending tx request */
526 default:
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900527 /* any other value (== GELIC_DESCR_DMA_NOT_IN_USE) */
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900528 if (!stop)
529 goto out;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900530 }
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900531 gelic_descr_release_tx(card, tx_chain->tail);
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900532 release ++;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900533 }
534out:
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900535 if (!stop && release)
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900536 gelic_card_wake_queues(card);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900537}
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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900547void gelic_net_set_multi(struct net_device *netdev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900548{
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900549 struct gelic_card *card = netdev_card(netdev);
Jiri Pirko22bedad32010-04-01 21:22:57 +0000550 struct netdev_hw_addr *ha;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900551 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
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900571 if ((netdev->flags & IFF_ALLMULTI) ||
Jiri Pirko4cd24ea2010-02-08 04:30:35 +0000572 (netdev_mc_count(netdev) > GELIC_NET_MC_COUNT_MAX)) {
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900573 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
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900583 /* set multicast addresses */
Jiri Pirko22bedad32010-04-01 21:22:57 +0000584 netdev_for_each_mc_addr(ha, netdev) {
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900585 addr = 0;
Jiri Pirko22bedad32010-04-01 21:22:57 +0000586 p = ha->addr;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900587 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/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900602 * gelic_card_enable_rxdmac - enables the receive DMA controller
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900603 * @card: card structure
604 *
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900605 * gelic_card_enable_rxdmac enables the DMA controller by setting RX_DMA_EN
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900606 * in the GDADMACCNTR register
607 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900608static inline void gelic_card_enable_rxdmac(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900609{
610 int status;
611
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900612#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
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900623 status = lv1_net_start_rx_dma(bus_id(card), dev_id(card),
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900624 card->rx_chain.head->bus_addr, 0);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900625 if (status)
626 dev_info(ctodev(card),
627 "lv1_net_start_rx_dma failed, status=%d\n", status);
628}
629
630/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900631 * gelic_card_disable_rxdmac - disables the receive DMA controller
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900632 * @card: card structure
633 *
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900634 * gelic_card_disable_rxdmac terminates processing on the DMA controller by
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900635 * turing off DMA and issueing a force end
636 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900637static inline void gelic_card_disable_rxdmac(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900638{
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),
Paul Bolle426d3102010-08-07 12:30:03 +0200645 "lv1_net_stop_rx_dma failed, %d\n", status);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900646}
647
648/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900649 * gelic_card_disable_txdmac - disables the transmit DMA controller
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900650 * @card: card structure
651 *
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900652 * gelic_card_disable_txdmac terminates processing on the DMA controller by
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900653 * turing off DMA and issueing a force end
654 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900655static inline void gelic_card_disable_txdmac(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900656{
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),
Paul Bolle426d3102010-08-07 12:30:03 +0200663 "lv1_net_stop_tx_dma failed, status=%d\n", status);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900664}
665
666/**
667 * gelic_net_stop - called upon ifconfig down
668 * @netdev: interface device structure
669 *
670 * always returns 0
671 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900672int gelic_net_stop(struct net_device *netdev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900673{
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900674 struct gelic_card *card;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900675
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900676 pr_debug("%s: start\n", __func__);
677
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900678 netif_stop_queue(netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900679 netif_carrier_off(netdev);
680
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900681 card = netdev_card(netdev);
682 gelic_card_down(card);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900683
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900684 pr_debug("%s: done\n", __func__);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900685 return 0;
686}
687
688/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900689 * gelic_card_get_next_tx_descr - returns the next available tx descriptor
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900690 * @card: device structure to get descriptor from
691 *
692 * returns the address of the next descriptor, or NULL if not available.
693 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900694static struct gelic_descr *
695gelic_card_get_next_tx_descr(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900696{
697 if (!card->tx_chain.head)
698 return NULL;
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900699 /* see if the next descriptor is free */
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900700 if (card->tx_chain.tail != card->tx_chain.head->next &&
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900701 gelic_descr_get_status(card->tx_chain.head) ==
702 GELIC_DESCR_DMA_NOT_IN_USE)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900703 return card->tx_chain.head;
704 else
705 return NULL;
706
707}
708
709/**
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900710 * gelic_net_set_txdescr_cmdstat - sets the tx descriptor command field
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900711 * @descr: descriptor structure to fill out
712 * @skb: packet to consider
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900713 *
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 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900718static void gelic_descr_set_tx_cmdstat(struct gelic_descr *descr,
719 struct sk_buff *skb)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900720{
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900721 if (skb->ip_summed != CHECKSUM_PARTIAL)
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900722 descr->dmac_cmd_status =
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900723 cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM |
724 GELIC_DESCR_TX_DMA_FRAME_TAIL);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900725 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 =
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900731 cpu_to_be32(GELIC_DESCR_DMA_CMD_TCP_CHKSUM |
732 GELIC_DESCR_TX_DMA_FRAME_TAIL);
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900733
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900734 else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
735 descr->dmac_cmd_status =
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900736 cpu_to_be32(GELIC_DESCR_DMA_CMD_UDP_CHKSUM |
737 GELIC_DESCR_TX_DMA_FRAME_TAIL);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900738 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 =
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900743 cpu_to_be32(GELIC_DESCR_DMA_CMD_NO_CHKSUM |
744 GELIC_DESCR_TX_DMA_FRAME_TAIL);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900745 }
746 }
747}
748
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900749static 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
Harvey Harrison09640e62009-02-01 00:45:17 -0800768 veth->h_vlan_proto = cpu_to_be16(ETH_P_8021Q);
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900769 veth->h_vlan_TCI = htons(tag);
770
771 return skb;
772}
773
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900774/**
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900775 * gelic_descr_prepare_tx - setup a descriptor for sending packets
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900776 * @card: card structure
777 * @descr: descriptor structure
778 * @skb: packet to use
779 *
780 * returns 0 on success, <0 on failure.
781 *
782 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900783static int gelic_descr_prepare_tx(struct gelic_card *card,
784 struct gelic_descr *descr,
785 struct sk_buff *skb)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900786{
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900787 dma_addr_t buf;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900788
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900789 if (card->vlan_required) {
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900790 struct sk_buff *skb_tmp;
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900791 enum gelic_port_type type;
792
793 type = netdev_port(skb->dev)->type;
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900794 skb_tmp = gelic_put_vlan_tag(skb,
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900795 card->vlan[type].tx);
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900796 if (!skb_tmp)
797 return -ENOMEM;
798 skb = skb_tmp;
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900799 }
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900800
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900801 buf = dma_map_single(ctodev(card), skb->data, skb->len, DMA_TO_DEVICE);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900802
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900803 if (!buf) {
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900804 dev_err(ctodev(card),
805 "dma map 2 failed (%p, %i). Dropping packet\n",
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900806 skb->data, skb->len);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900807 return -ENOMEM;
808 }
809
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900810 descr->buf_addr = cpu_to_be32(buf);
811 descr->buf_size = cpu_to_be32(skb->len);
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900812 descr->skb = skb;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900813 descr->data_status = 0;
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900814 descr->next_descr_addr = 0; /* terminate hw descr */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900815 gelic_descr_set_tx_cmdstat(descr, skb);
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900816
817 /* bump free descriptor pointer */
Masakazu Mokuno173261e2007-08-31 22:22:32 +0900818 card->tx_chain.head = descr->next;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900819 return 0;
820}
821
822/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900823 * gelic_card_kick_txdma - enables TX DMA processing
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900824 * @card: card structure
825 * @descr: descriptor address to enable TX processing at
826 *
827 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900828static int gelic_card_kick_txdma(struct gelic_card *card,
829 struct gelic_descr *descr)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900830{
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900831 int status = 0;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900832
833 if (card->tx_dma_progress)
834 return 0;
835
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900836 if (gelic_descr_get_status(descr) == GELIC_DESCR_DMA_CARDOWNED) {
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900837 card->tx_dma_progress = 1;
Masakazu Mokunodc029ad2007-08-31 22:25:09 +0900838 status = lv1_net_start_tx_dma(bus_id(card), dev_id(card),
839 descr->bus_addr, 0);
840 if (status)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900841 dev_info(ctodev(card), "lv1_net_start_txdma failed," \
Masakazu Mokunodc029ad2007-08-31 22:25:09 +0900842 "status=%d\n", status);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900843 }
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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900854int gelic_net_xmit(struct sk_buff *skb, struct net_device *netdev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900855{
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900856 struct gelic_card *card = netdev_card(netdev);
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900857 struct gelic_descr *descr;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900858 int result;
859 unsigned long flags;
860
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900861 spin_lock_irqsave(&card->tx_lock, flags);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900862
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900863 gelic_card_release_tx_chain(card, 0);
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900864
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900865 descr = gelic_card_get_next_tx_descr(card);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900866 if (!descr) {
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900867 /*
868 * no more descriptors free
869 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900870 gelic_card_stop_queues(card);
871 spin_unlock_irqrestore(&card->tx_lock, flags);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900872 return NETDEV_TX_BUSY;
873 }
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900874
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900875 result = gelic_descr_prepare_tx(card, descr, skb);
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900876 if (result) {
877 /*
878 * DMA map failed. As chanses are that failure
879 * would continue, just release skb and return
880 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900881 netdev->stats.tx_dropped++;
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900882 dev_kfree_skb_any(skb);
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900883 spin_unlock_irqrestore(&card->tx_lock, flags);
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900884 return NETDEV_TX_OK;
885 }
886 /*
887 * link this prepared descriptor to previous one
888 * to achieve high performance
889 */
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900890 descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900891 /*
892 * as hardware descriptor is modified in the above lines,
893 * ensure that the hardware sees it
894 */
895 wmb();
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900896 if (gelic_card_kick_txdma(card, descr)) {
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900897 /*
898 * kick failed.
899 * release descriptors which were just prepared
900 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900901 netdev->stats.tx_dropped++;
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900902 gelic_descr_release_tx(card, descr);
903 gelic_descr_release_tx(card, descr->next);
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900904 card->tx_chain.tail = descr->next->next;
905 dev_info(ctodev(card), "%s: kick failure\n", __func__);
Masakazu Mokuno48544cc262007-07-20 17:24:56 +0900906 }
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900907
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900908 spin_unlock_irqrestore(&card->tx_lock, flags);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900909 return NETDEV_TX_OK;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900910}
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
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900916 * @netdev: net_device structure to be passed packet
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900917 *
918 * iommu-unmaps the skb, fills out skb structure and passes the data to the
919 * stack. The descriptor state is not changed.
920 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900921static void gelic_net_pass_skb_up(struct gelic_descr *descr,
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900922 struct gelic_card *card,
923 struct net_device *netdev)
924
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900925{
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900926 struct sk_buff *skb = descr->skb;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900927 u32 data_status, data_error;
928
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900929 data_status = be32_to_cpu(descr->data_status);
930 data_error = be32_to_cpu(descr->data_error);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900931 /* unmap skb buffer */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900932 dma_unmap_single(ctodev(card), be32_to_cpu(descr->buf_addr),
933 GELIC_NET_MAX_MTU,
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900934 DMA_FROM_DEVICE);
935
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900936 skb_put(skb, be32_to_cpu(descr->valid_size)?
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900937 be32_to_cpu(descr->valid_size) :
938 be32_to_cpu(descr->result_size));
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900939 if (!descr->valid_size)
940 dev_info(ctodev(card), "buffer full %x %x %x\n",
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900941 be32_to_cpu(descr->result_size),
942 be32_to_cpu(descr->buf_size),
943 be32_to_cpu(descr->dmac_cmd_status));
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900944
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) {
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900955 if ((data_status & GELIC_DESCR_DATA_STATUS_CHK_MASK) &&
956 (!(data_error & GELIC_DESCR_DATA_ERROR_CHK_MASK)))
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900957 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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900964 netdev->stats.rx_packets++;
965 netdev->stats.rx_bytes += skb->len;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900966
967 /* pass skb up to stack */
968 netif_receive_skb(skb);
969}
970
971/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900972 * gelic_card_decode_one_descr - processes an rx descriptor
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900973 * @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 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900980static int gelic_card_decode_one_descr(struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900981{
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900982 enum gelic_descr_dma_status status;
983 struct gelic_descr_chain *chain = &card->rx_chain;
Masakazu Mokuno589866f2008-02-07 19:58:42 +0900984 struct gelic_descr *descr = chain->head;
985 struct net_device *netdev = NULL;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900986 int dmac_chain_ended;
987
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900988 status = gelic_descr_get_status(descr);
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900989 /* is this descriptor terminated with next_descr == NULL? */
990 dmac_chain_ended =
Masakazu Mokuno100e1d82008-02-07 19:57:54 +0900991 be32_to_cpu(descr->dmac_cmd_status) &
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900992 GELIC_DESCR_RX_DMA_CHAIN_END;
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900993
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900994 if (status == GELIC_DESCR_DMA_CARDOWNED)
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900995 return 0;
996
Masakazu Mokuno59e97322008-02-07 19:58:08 +0900997 if (status == GELIC_DESCR_DMA_NOT_IN_USE) {
Masakazu Mokuno02c18892007-07-05 20:11:16 +0900998 dev_dbg(ctodev(card), "dormant descr? %p\n", descr);
999 return 0;
1000 }
1001
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001002 /* 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
Geoff Levandd4d7f1f2009-12-01 12:15:53 +00001018 netdev = card->netdev[GELIC_PORT_ETHERNET_0];
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001019
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001020 if ((status == GELIC_DESCR_DMA_RESPONSE_ERROR) ||
1021 (status == GELIC_DESCR_DMA_PROTECTION_ERROR) ||
1022 (status == GELIC_DESCR_DMA_FORCE_END)) {
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001023 dev_info(ctodev(card), "dropping RX descriptor with state %x\n",
1024 status);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001025 netdev->stats.rx_dropped++;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001026 goto refill;
1027 }
1028
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001029 if (status == GELIC_DESCR_DMA_BUFFER_FULL) {
Masakazu Mokunofe6d3a42007-07-20 17:39:25 +09001030 /*
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 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001046 if (status != GELIC_DESCR_DMA_FRAME_END) {
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001047 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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001053 gelic_net_pass_skb_up(descr, card, netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001054refill:
Masakazu Mokunofe6d3a42007-07-20 17:39:25 +09001055 /*
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;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001061
1062 /* change the descriptor state: */
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001063 gelic_descr_set_status(descr, GELIC_DESCR_DMA_NOT_IN_USE);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001064
Masakazu Mokunofe6d3a42007-07-20 17:39:25 +09001065 /*
1066 * this call can fail, but for now, just leave this
1067 * decriptor without skb
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001068 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001069 gelic_descr_prepare_rx(card, descr);
Masakazu Mokunofe6d3a42007-07-20 17:39:25 +09001070
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001071 chain->tail = descr;
1072 chain->head = descr->next;
Masakazu Mokunofe6d3a42007-07-20 17:39:25 +09001073
1074 /*
1075 * Set this descriptor the end of the chain.
1076 */
Masakazu Mokuno100e1d82008-02-07 19:57:54 +09001077 descr->prev->next_descr_addr = cpu_to_be32(descr->bus_addr);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001078
Masakazu Mokunofe6d3a42007-07-20 17:39:25 +09001079 /*
1080 * If dmac chain was met, DMAC stopped.
1081 * thus re-enable it
1082 */
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001083 if (dmac_chain_ended) {
Masakazu Mokuno583aae12007-07-20 17:35:54 +09001084 card->rx_dma_restart_required = 1;
1085 dev_dbg(ctodev(card), "reenable rx dma scheduled\n");
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001086 }
1087
1088 return 1;
1089}
1090
1091/**
1092 * gelic_net_poll - NAPI poll function called by the stack to return packets
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001093 * @napi: napi structure
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001094 * @budget: number of packets we can pass to the stack at most
1095 *
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001096 * returns the number of the processed packets
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001097 *
1098 */
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001099static int gelic_net_poll(struct napi_struct *napi, int budget)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001100{
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001101 struct gelic_card *card = container_of(napi, struct gelic_card, napi);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001102 int packets_done = 0;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001103
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001104 while (packets_done < budget) {
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001105 if (!gelic_card_decode_one_descr(card))
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001106 break;
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001107
1108 packets_done++;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001109 }
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001110
1111 if (packets_done < budget) {
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001112 napi_complete(napi);
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001113 gelic_card_rx_irq_on(card);
Stephen Hemmingerbea33482007-10-03 16:41:36 -07001114 }
1115 return packets_done;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001116}
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001117/**
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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001124int gelic_net_change_mtu(struct net_device *netdev, int new_mtu)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001125{
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/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001137 * gelic_card_interrupt - event handler for gelic_net
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001138 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001139static irqreturn_t gelic_card_interrupt(int irq, void *ptr)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001140{
1141 unsigned long flags;
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001142 struct gelic_card *card = ptr;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001143 u64 status;
1144
1145 status = card->irq_status;
1146
1147 if (!status)
1148 return IRQ_NONE;
1149
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001150 status &= card->irq_mask;
1151
Masakazu Mokuno583aae12007-07-20 17:35:54 +09001152 if (card->rx_dma_restart_required) {
1153 card->rx_dma_restart_required = 0;
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001154 gelic_card_enable_rxdmac(card);
Masakazu Mokuno583aae12007-07-20 17:35:54 +09001155 }
1156
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001157 if (status & GELIC_CARD_RXINT) {
1158 gelic_card_rx_irq_off(card);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001159 napi_schedule(&card->napi);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001160 }
1161
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001162 if (status & GELIC_CARD_TXINT) {
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001163 spin_lock_irqsave(&card->tx_lock, flags);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001164 card->tx_dma_progress = 0;
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001165 gelic_card_release_tx_chain(card, 0);
Masakazu Mokuno48544cc262007-07-20 17:24:56 +09001166 /* kick outstanding tx descriptor if any */
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001167 gelic_card_kick_txdma(card, card->tx_chain.tail);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001168 spin_unlock_irqrestore(&card->tx_lock, flags);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001169 }
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +09001170
1171 /* ether port status changed */
1172 if (status & GELIC_CARD_PORT_STATUS_CHANGED)
1173 gelic_card_get_ether_port_status(card, 1);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001174
Masakazu Mokuno09dde542008-02-07 19:58:57 +09001175#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
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001181 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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001191void gelic_net_poll_controller(struct net_device *netdev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001192{
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001193 struct gelic_card *card = netdev_card(netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001194
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001195 gelic_card_set_irq_mask(card, 0);
1196 gelic_card_interrupt(netdev->irq, netdev);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001197 gelic_card_set_irq_mask(card, card->irq_mask);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001198}
1199#endif /* CONFIG_NET_POLL_CONTROLLER */
1200
1201/**
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001202 * 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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001210int gelic_net_open(struct net_device *netdev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001211{
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001212 struct gelic_card *card = netdev_card(netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001213
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001214 dev_dbg(ctodev(card), " -> %s %p\n", __func__, netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001215
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001216 gelic_card_up(card);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001217
1218 netif_start_queue(netdev);
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +09001219 gelic_card_get_ether_port_status(card, 1);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001220
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001221 dev_dbg(ctodev(card), " <- %s\n", __func__);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001222 return 0;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001223}
1224
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001225void gelic_net_get_drvinfo(struct net_device *netdev,
1226 struct ethtool_drvinfo *info)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001227{
1228 strncpy(info->driver, DRV_NAME, sizeof(info->driver) - 1);
1229 strncpy(info->version, DRV_VERSION, sizeof(info->version) - 1);
1230}
1231
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001232static int gelic_ether_get_settings(struct net_device *netdev,
1233 struct ethtool_cmd *cmd)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001234{
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001235 struct gelic_card *card = netdev_card(netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001236
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +09001237 gelic_card_get_ether_port_status(card, 0);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001238
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +09001239 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;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001258 }
Masakazu Mokuno01fed4c2008-02-07 19:58:32 +09001259
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001260 cmd->supported = SUPPORTED_TP | SUPPORTED_Autoneg |
1261 SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full |
1262 SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full |
Hideyuki Sasaki55873ed2009-12-01 12:15:58 +00001263 SUPPORTED_1000baseT_Full;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001264 cmd->advertising = cmd->supported;
Hideyuki Sasaki55873ed2009-12-01 12:15:58 +00001265 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 }
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001271 cmd->port = PORT_TP;
1272
1273 return 0;
1274}
1275
Hideyuki Sasaki55873ed2009-12-01 12:15:58 +00001276static 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
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001315u32 gelic_net_get_rx_csum(struct net_device *netdev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001316{
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001317 struct gelic_card *card = netdev_card(netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001318
1319 return card->rx_csum;
1320}
1321
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001322int gelic_net_set_rx_csum(struct net_device *netdev, u32 data)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001323{
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001324 struct gelic_card *card = netdev_card(netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001325
1326 card->rx_csum = data;
1327 return 0;
1328}
1329
Masakazu Mokuno3faac212008-03-27 11:39:31 +11001330static 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}
1341static 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 }
1405done:
1406 return status;
1407}
1408
Stephen Hemminger0fc0b732009-09-02 01:03:33 -07001409static const struct ethtool_ops gelic_ether_ethtool_ops = {
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001410 .get_drvinfo = gelic_net_get_drvinfo,
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001411 .get_settings = gelic_ether_get_settings,
Hideyuki Sasaki55873ed2009-12-01 12:15:58 +00001412 .set_settings = gelic_ether_set_settings,
Masakazu Mokuno7bc56b92008-02-07 19:58:20 +09001413 .get_link = ethtool_op_get_link,
Masakazu Mokuno7bc56b92008-02-07 19:58:20 +09001414 .get_tx_csum = ethtool_op_get_tx_csum,
1415 .set_tx_csum = ethtool_op_set_tx_csum,
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001416 .get_rx_csum = gelic_net_get_rx_csum,
1417 .set_rx_csum = gelic_net_set_rx_csum,
Masakazu Mokuno3faac212008-03-27 11:39:31 +11001418 .get_wol = gelic_net_get_wol,
1419 .set_wol = gelic_net_set_wol,
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001420};
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001421
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 */
1429static void gelic_net_tx_timeout_task(struct work_struct *work)
1430{
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001431 struct gelic_card *card =
1432 container_of(work, struct gelic_card, tx_timeout_task);
Geoff Levandd4d7f1f2009-12-01 12:15:53 +00001433 struct net_device *netdev = card->netdev[GELIC_PORT_ETHERNET_0];
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001434
Frans Pop583d0772010-03-24 07:57:31 +00001435 dev_info(ctodev(card), "%s:Timed out. Restarting...\n", __func__);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001436
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
1446out:
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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001456void gelic_net_tx_timeout(struct net_device *netdev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001457{
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001458 struct gelic_card *card;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001459
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001460 card = netdev_card(netdev);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001461 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
Masakazu Mokuno5384e832009-01-15 22:47:29 +00001468static 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,
Ben Hutchings240c1022009-07-09 17:54:35 +00001475 .ndo_set_mac_address = eth_mac_addr,
Masakazu Mokuno5384e832009-01-15 22:47:29 +00001476 .ndo_validate_addr = eth_validate_addr,
1477#ifdef CONFIG_NET_POLL_CONTROLLER
1478 .ndo_poll_controller = gelic_net_poll_controller,
1479#endif
1480};
1481
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001482/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001483 * gelic_ether_setup_netdev_ops - initialization of net_device operations
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001484 * @netdev: net_device structure
1485 *
1486 * fills out function pointers in the net_device structure
1487 */
Geert Uytterhoeven48dce822009-06-10 04:38:58 +00001488static void __devinit gelic_ether_setup_netdev_ops(struct net_device *netdev,
1489 struct napi_struct *napi)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001490{
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001491 netdev->watchdog_timeo = GELIC_NET_WATCHDOG_TIMEOUT;
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001492 /* NAPI */
1493 netif_napi_add(netdev, napi,
1494 gelic_net_poll, GELIC_NET_NAPI_WEIGHT);
1495 netdev->ethtool_ops = &gelic_ether_ethtool_ops;
Masakazu Mokuno5384e832009-01-15 22:47:29 +00001496 netdev->netdev_ops = &gelic_netdevice_ops;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001497}
1498
1499/**
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001500 * gelic_ether_setup_netdev - initialization of net_device
1501 * @netdev: net_device structure
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001502 * @card: card structure
1503 *
1504 * Returns 0 on success or <0 on failure
1505 *
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001506 * gelic_ether_setup_netdev initializes the net_device structure
1507 * and register it.
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001508 **/
Geert Uytterhoeven48dce822009-06-10 04:38:58 +00001509int __devinit gelic_net_setup_netdev(struct net_device *netdev,
1510 struct gelic_card *card)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001511{
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001512 int status;
1513 u64 v1, v2;
1514
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001515 netdev->features = NETIF_F_IP_CSUM;
1516
1517 status = lv1_net_control(bus_id(card), dev_id(card),
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001518 GELIC_LV1_GET_MAC_ADDRESS,
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001519 0, 0, 0, &v1, &v2);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001520 v1 <<= 16;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001521 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 }
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001527 memcpy(netdev->dev_addr, &v1, ETH_ALEN);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001528
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001529 if (card->vlan_required) {
Masakazu Mokuno173261e2007-08-31 22:22:32 +09001530 netdev->hard_header_len += VLAN_HLEN;
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001531 /*
1532 * As vlan is internally used,
1533 * we can not receive vlan packets
1534 */
1535 netdev->features |= NETIF_F_VLAN_CHALLENGED;
Masakazu Mokuno173261e2007-08-31 22:22:32 +09001536 }
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001537
1538 status = register_netdev(netdev);
1539 if (status) {
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001540 dev_err(ctodev(card), "%s:Couldn't register %s %d\n",
1541 __func__, netdev->name, status);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001542 return status;
1543 }
Johannes Berge1749612008-10-27 15:59:26 -07001544 dev_info(ctodev(card), "%s: MAC addr %pM\n",
1545 netdev->name, netdev->dev_addr);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001546
1547 return 0;
1548}
1549
1550/**
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001551 * gelic_alloc_card_net - allocates net_device and card structure
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001552 *
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 */
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001557#define GELIC_ALIGN (32)
Geert Uytterhoeven48dce822009-06-10 04:38:58 +00001558static struct gelic_card * __devinit gelic_alloc_card_net(struct net_device **netdev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001559{
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001560 struct gelic_card *card;
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001561 struct gelic_port *port;
1562 void *p;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001563 size_t alloc_size;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001564 /*
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001565 * gelic requires dma descriptor is 32 bytes aligned and
1566 * the hypervisor requires irq_status is 8 bytes aligned.
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001567 */
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001568 BUILD_BUG_ON(offsetof(struct gelic_card, irq_status) % 8);
1569 BUILD_BUG_ON(offsetof(struct gelic_card, descr) % 32);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001570 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;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001575
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001576 p = kzalloc(alloc_size, GFP_KERNEL);
1577 if (!p)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001578 return NULL;
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001579 card = PTR_ALIGN(p, GELIC_ALIGN);
1580 card->unalign = p;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001581
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001582 /*
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;
Geoff Levandd4d7f1f2009-12-01 12:15:53 +00001595 port->type = GELIC_PORT_ETHERNET_0;
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001596
1597 /* gelic_card */
Geoff Levandd4d7f1f2009-12-01 12:15:53 +00001598 card->netdev[GELIC_PORT_ETHERNET_0] = *netdev;
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001599
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001600 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);
Daniel Walker2914f3e2008-05-22 00:00:03 -07001603 mutex_init(&card->updown_lock);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001604 atomic_set(&card->users, 0);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001605
1606 return card;
1607}
1608
Geert Uytterhoeven48dce822009-06-10 04:38:58 +00001609static void __devinit gelic_card_get_vlan_info(struct gelic_card *card)
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001610{
1611 u64 v1, v2;
1612 int status;
1613 unsigned int i;
1614 struct {
1615 int tx;
1616 int rx;
1617 } vlan_id_ix[2] = {
Geoff Levandd4d7f1f2009-12-01 12:15:53 +00001618 [GELIC_PORT_ETHERNET_0] = {
1619 .tx = GELIC_LV1_VLAN_TX_ETHERNET_0,
1620 .rx = GELIC_LV1_VLAN_RX_ETHERNET_0
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001621 },
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
Geoff Levandd4d7f1f2009-12-01 12:15:53 +00001665 if (card->vlan[GELIC_PORT_ETHERNET_0].tx) {
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001666 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}
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001680/**
1681 * ps3_gelic_driver_probe - add a device to the control of this driver
1682 */
Geert Uytterhoeven48dce822009-06-10 04:38:58 +00001683static int __devinit ps3_gelic_driver_probe(struct ps3_system_bus_device *dev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001684{
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001685 struct gelic_card *card;
1686 struct net_device *netdev;
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001687 int result;
1688
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001689 pr_debug("%s: called\n", __func__);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001690 result = ps3_open_hv_device(dev);
1691
1692 if (result) {
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001693 dev_dbg(&dev->core, "%s:ps3_open_hv_device failed\n",
1694 __func__);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001695 goto fail_open;
1696 }
1697
1698 result = ps3_dma_region_create(dev->d_region);
1699
1700 if (result) {
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001701 dev_dbg(&dev->core, "%s:ps3_dma_region_create failed(%d)\n",
1702 __func__, result);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001703 BUG_ON("check region type");
1704 goto fail_dma_region;
1705 }
1706
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001707 /* 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 }
Geert Uytterhoeven03fa68c2009-06-10 04:38:54 +00001715 ps3_system_bus_set_drvdata(dev, card);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001716 card->dev = dev;
1717
1718 /* get internal vlan info */
1719 gelic_card_get_vlan_info(card);
1720
Hideyuki Sasaki55873ed2009-12-01 12:15:58 +00001721 card->link_mode = GELIC_LV1_ETHER_AUTO_NEG;
1722
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001723 /* setup interrupt */
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001724 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,
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001731 "%s:set_interrupt_status_indicator failed: %s\n",
1732 __func__, ps3_result(result));
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001733 result = -EIO;
1734 goto fail_status_indicator;
1735 }
1736
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001737 result = ps3_sb_event_receive_port_setup(dev, PS3_BINDING_CPU_ANY,
1738 &card->irq);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001739
1740 if (result) {
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001741 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;
1782
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);
1788 if (result) {
1789 dev_dbg(&dev->core, "%s: setup_netdev failed %d",
1790 __func__, result);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001791 goto fail_setup_netdev;
1792 }
1793
Masakazu Mokuno09dde542008-02-07 19:58:57 +09001794#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
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001800 pr_debug("%s: done\n", __func__);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001801 return 0;
1802
1803fail_setup_netdev:
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001804fail_alloc_skbs:
1805 gelic_card_free_chain(card, card->rx_chain.head);
1806fail_alloc_rx:
1807 gelic_card_free_chain(card, card->tx_chain.head);
1808fail_alloc_tx:
1809 free_irq(card->irq, card);
1810 netdev->irq = NO_IRQ;
1811fail_request_irq:
1812 ps3_sb_event_receive_port_destroy(dev, card->irq);
1813fail_alloc_irq:
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001814 lv1_net_set_interrupt_status_indicator(bus_id(card),
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001815 bus_id(card),
1816 0, 0);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001817fail_status_indicator:
Geert Uytterhoeven03fa68c2009-06-10 04:38:54 +00001818 ps3_system_bus_set_drvdata(dev, NULL);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001819 kfree(netdev_card(netdev)->unalign);
1820 free_netdev(netdev);
1821fail_alloc_card:
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001822 ps3_dma_region_free(dev->d_region);
1823fail_dma_region:
1824 ps3_close_hv_device(dev);
1825fail_open:
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001826 return result;
1827}
1828
1829/**
1830 * ps3_gelic_driver_remove - remove a device from the control of this driver
1831 */
1832
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001833static int ps3_gelic_driver_remove(struct ps3_system_bus_device *dev)
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001834{
Geert Uytterhoeven03fa68c2009-06-10 04:38:54 +00001835 struct gelic_card *card = ps3_system_bus_get_drvdata(dev);
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001836 struct net_device *netdev0;
1837 pr_debug("%s: called\n", __func__);
1838
Hideyuki Sasaki55873ed2009-12-01 12:15:58 +00001839 /* set auto-negotiation */
1840 gelic_card_set_link_mode(card, GELIC_LV1_ETHER_AUTO_NEG);
1841
Masakazu Mokuno09dde542008-02-07 19:58:57 +09001842#ifdef CONFIG_GELIC_WIRELESS
1843 gelic_wl_driver_remove(card);
1844#endif
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001845 /* 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
Geoff Levandd4d7f1f2009-12-01 12:15:53 +00001859 netdev0 = card->netdev[GELIC_PORT_ETHERNET_0];
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001860 /* 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);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001864
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
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001871 unregister_netdev(netdev0);
1872 kfree(netdev_card(netdev0)->unalign);
1873 free_netdev(netdev0);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001874
Geert Uytterhoeven03fa68c2009-06-10 04:38:54 +00001875 ps3_system_bus_set_drvdata(dev, NULL);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001876
1877 ps3_dma_region_free(dev->d_region);
1878
1879 ps3_close_hv_device(dev);
1880
Masakazu Mokuno589866f2008-02-07 19:58:42 +09001881 pr_debug("%s: done\n", __func__);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001882 return 0;
1883}
1884
1885static 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
1894static 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
1901static void __exit ps3_gelic_driver_exit (void)
1902{
1903 ps3_system_bus_driver_unregister(&ps3_gelic_driver);
1904}
1905
Masakazu Mokuno59e97322008-02-07 19:58:08 +09001906module_init(ps3_gelic_driver_init);
1907module_exit(ps3_gelic_driver_exit);
Masakazu Mokuno02c18892007-07-05 20:11:16 +09001908
1909MODULE_ALIAS(PS3_MODULE_ALIAS_GELIC);
1910