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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-10 17:57:52 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-10 17:57:52 -0400
commit4c75f7416f51b0c6855952467a5db04f9c598f09 (patch)
treedbe06f7e69d68cf99b20567577c9c5488e4e1e8c /drivers
parent6ed911fb04886c5510a41cd89203b931b1c5d261 (diff)
parented99c541e0a15281c57530d54a4a5e3272f74fb9 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: mmc: at91_mci: fix hanging and rework to match flowcharts mmc: at91_mci typo sdhci: Fix "Unexpected interrupt" handling mmc: fix silly copy-and-paste error mmc: move layer init and workqueue to core file mmc: refactor host class handling mmc: refactor bus operations sdhci: add ene controller id mmc: bounce requests for simple hosts
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/card/Kconfig18
-rw-r--r--drivers/mmc/card/block.c7
-rw-r--r--drivers/mmc/card/queue.c191
-rw-r--r--drivers/mmc/card/queue.h7
-rw-r--r--drivers/mmc/core/Makefile3
-rw-r--r--drivers/mmc/core/bus.c253
-rw-r--r--drivers/mmc/core/bus.h22
-rw-r--r--drivers/mmc/core/core.c147
-rw-r--r--drivers/mmc/core/core.h8
-rw-r--r--drivers/mmc/core/host.c156
-rw-r--r--drivers/mmc/core/host.h18
-rw-r--r--drivers/mmc/core/mmc.c65
-rw-r--r--drivers/mmc/core/sd.c63
-rw-r--r--drivers/mmc/core/sysfs.c347
-rw-r--r--drivers/mmc/core/sysfs.h19
-rw-r--r--drivers/mmc/host/at91_mci.c217
-rw-r--r--drivers/mmc/host/sdhci.c10
17 files changed, 979 insertions, 572 deletions
diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig
index 9320a8c73239..a49cb9737cd8 100644
--- a/drivers/mmc/card/Kconfig
+++ b/drivers/mmc/card/Kconfig
@@ -14,3 +14,21 @@ config MMC_BLOCK
14 mount the filesystem. Almost everyone wishing MMC support 14 mount the filesystem. Almost everyone wishing MMC support
15 should say Y or M here. 15 should say Y or M here.
16 16
17config MMC_BLOCK_BOUNCE
18 bool "Use bounce buffer for simple hosts"
19 depends on MMC_BLOCK
20 default y
21 help
22 SD/MMC is a high latency protocol where it is crucial to
23 send large requests in order to get high performance. Many
24 controllers, however, are restricted to continuous memory
25 (i.e. they can't do scatter-gather), something the kernel
26 rarely can provide.
27
28 Say Y here to help these restricted hosts by bouncing
29 requests back and forth from a large buffer. You will get
30 a big performance gain at the cost of up to 64 KiB of
31 physical memory.
32
33 If unsure, say Y here.
34
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 540ff4bea54c..cbd4b6e3e17c 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -262,7 +262,9 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
262 } 262 }
263 263
264 brq.data.sg = mq->sg; 264 brq.data.sg = mq->sg;
265 brq.data.sg_len = blk_rq_map_sg(req->q, req, brq.data.sg); 265 brq.data.sg_len = mmc_queue_map_sg(mq);
266
267 mmc_queue_bounce_pre(mq);
266 268
267 if (brq.data.blocks != 269 if (brq.data.blocks !=
268 (req->nr_sectors >> (md->block_bits - 9))) { 270 (req->nr_sectors >> (md->block_bits - 9))) {
@@ -279,6 +281,9 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
279 } 281 }
280 282
281 mmc_wait_for_req(card->host, &brq.mrq); 283 mmc_wait_for_req(card->host, &brq.mrq);
284
285 mmc_queue_bounce_post(mq);
286
282 if (brq.cmd.error) { 287 if (brq.cmd.error) {
283 printk(KERN_ERR "%s: error %d sending read/write command\n", 288 printk(KERN_ERR "%s: error %d sending read/write command\n",
284 req->rq_disk->disk_name, brq.cmd.error); 289 req->rq_disk->disk_name, brq.cmd.error);
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index dd97bc798409..4fb2089dc690 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -17,6 +17,8 @@
17#include <linux/mmc/host.h> 17#include <linux/mmc/host.h>
18#include "queue.h" 18#include "queue.h"
19 19
20#define MMC_QUEUE_BOUNCESZ 65536
21
20#define MMC_QUEUE_SUSPENDED (1 << 0) 22#define MMC_QUEUE_SUSPENDED (1 << 0)
21 23
22/* 24/*
@@ -118,6 +120,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
118 struct mmc_host *host = card->host; 120 struct mmc_host *host = card->host;
119 u64 limit = BLK_BOUNCE_HIGH; 121 u64 limit = BLK_BOUNCE_HIGH;
120 int ret; 122 int ret;
123 unsigned int bouncesz;
121 124
122 if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask) 125 if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
123 limit = *mmc_dev(host)->dma_mask; 126 limit = *mmc_dev(host)->dma_mask;
@@ -127,21 +130,61 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
127 if (!mq->queue) 130 if (!mq->queue)
128 return -ENOMEM; 131 return -ENOMEM;
129 132
130 blk_queue_prep_rq(mq->queue, mmc_prep_request);
131 blk_queue_bounce_limit(mq->queue, limit);
132 blk_queue_max_sectors(mq->queue, host->max_req_size / 512);
133 blk_queue_max_phys_segments(mq->queue, host->max_phys_segs);
134 blk_queue_max_hw_segments(mq->queue, host->max_hw_segs);
135 blk_queue_max_segment_size(mq->queue, host->max_seg_size);
136
137 mq->queue->queuedata = mq; 133 mq->queue->queuedata = mq;
138 mq->req = NULL; 134 mq->req = NULL;
139 135
140 mq->sg = kmalloc(sizeof(struct scatterlist) * host->max_phys_segs, 136 blk_queue_prep_rq(mq->queue, mmc_prep_request);
141 GFP_KERNEL); 137
142 if (!mq->sg) { 138#ifdef CONFIG_MMC_BLOCK_BOUNCE
143 ret = -ENOMEM; 139 if (host->max_hw_segs == 1) {
144 goto cleanup_queue; 140 bouncesz = MMC_QUEUE_BOUNCESZ;
141
142 if (bouncesz > host->max_req_size)
143 bouncesz = host->max_req_size;
144 if (bouncesz > host->max_seg_size)
145 bouncesz = host->max_seg_size;
146
147 mq->bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
148 if (!mq->bounce_buf) {
149 printk(KERN_WARNING "%s: unable to allocate "
150 "bounce buffer\n", mmc_card_name(card));
151 } else {
152 blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_HIGH);
153 blk_queue_max_sectors(mq->queue, bouncesz / 512);
154 blk_queue_max_phys_segments(mq->queue, bouncesz / 512);
155 blk_queue_max_hw_segments(mq->queue, bouncesz / 512);
156 blk_queue_max_segment_size(mq->queue, bouncesz);
157
158 mq->sg = kmalloc(sizeof(struct scatterlist),
159 GFP_KERNEL);
160 if (!mq->sg) {
161 ret = -ENOMEM;
162 goto free_bounce_buf;
163 }
164
165 mq->bounce_sg = kmalloc(sizeof(struct scatterlist) *
166 bouncesz / 512, GFP_KERNEL);
167 if (!mq->bounce_sg) {
168 ret = -ENOMEM;
169 goto free_sg;
170 }
171 }
172 }
173#endif
174
175 if (!mq->bounce_buf) {
176 blk_queue_bounce_limit(mq->queue, limit);
177 blk_queue_max_sectors(mq->queue, host->max_req_size / 512);
178 blk_queue_max_phys_segments(mq->queue, host->max_phys_segs);
179 blk_queue_max_hw_segments(mq->queue, host->max_hw_segs);
180 blk_queue_max_segment_size(mq->queue, host->max_seg_size);
181
182 mq->sg = kmalloc(sizeof(struct scatterlist) *
183 host->max_phys_segs, GFP_KERNEL);
184 if (!mq->sg) {
185 ret = -ENOMEM;
186 goto cleanup_queue;
187 }
145 } 188 }
146 189
147 init_MUTEX(&mq->thread_sem); 190 init_MUTEX(&mq->thread_sem);
@@ -149,14 +192,21 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
149 mq->thread = kthread_run(mmc_queue_thread, mq, "mmcqd"); 192 mq->thread = kthread_run(mmc_queue_thread, mq, "mmcqd");
150 if (IS_ERR(mq->thread)) { 193 if (IS_ERR(mq->thread)) {
151 ret = PTR_ERR(mq->thread); 194 ret = PTR_ERR(mq->thread);
152 goto free_sg; 195 goto free_bounce_sg;
153 } 196 }
154 197
155 return 0; 198 return 0;
156 199 free_bounce_sg:
200 if (mq->bounce_sg)
201 kfree(mq->bounce_sg);
202 mq->bounce_sg = NULL;
157 free_sg: 203 free_sg:
158 kfree(mq->sg); 204 kfree(mq->sg);
159 mq->sg = NULL; 205 mq->sg = NULL;
206 free_bounce_buf:
207 if (mq->bounce_buf)
208 kfree(mq->bounce_buf);
209 mq->bounce_buf = NULL;
160 cleanup_queue: 210 cleanup_queue:
161 blk_cleanup_queue(mq->queue); 211 blk_cleanup_queue(mq->queue);
162 return ret; 212 return ret;
@@ -178,9 +228,17 @@ void mmc_cleanup_queue(struct mmc_queue *mq)
178 /* Then terminate our worker thread */ 228 /* Then terminate our worker thread */
179 kthread_stop(mq->thread); 229 kthread_stop(mq->thread);
180 230
231 if (mq->bounce_sg)
232 kfree(mq->bounce_sg);
233 mq->bounce_sg = NULL;
234
181 kfree(mq->sg); 235 kfree(mq->sg);
182 mq->sg = NULL; 236 mq->sg = NULL;
183 237
238 if (mq->bounce_buf)
239 kfree(mq->bounce_buf);
240 mq->bounce_buf = NULL;
241
184 blk_cleanup_queue(mq->queue); 242 blk_cleanup_queue(mq->queue);
185 243
186 mq->card = NULL; 244 mq->card = NULL;
@@ -231,3 +289,108 @@ void mmc_queue_resume(struct mmc_queue *mq)
231 } 289 }
232} 290}
233 291
292static void copy_sg(struct scatterlist *dst, unsigned int dst_len,
293 struct scatterlist *src, unsigned int src_len)
294{
295 unsigned int chunk;
296 char *dst_buf, *src_buf;
297 unsigned int dst_size, src_size;
298
299 dst_buf = NULL;
300 src_buf = NULL;
301 dst_size = 0;
302 src_size = 0;
303
304 while (src_len) {
305 BUG_ON(dst_len == 0);
306
307 if (dst_size == 0) {
308 dst_buf = page_address(dst->page) + dst->offset;
309 dst_size = dst->length;
310 }
311
312 if (src_size == 0) {
313 src_buf = page_address(src->page) + src->offset;
314 src_size = src->length;
315 }
316
317 chunk = min(dst_size, src_size);
318
319 memcpy(dst_buf, src_buf, chunk);
320
321 dst_buf += chunk;
322 src_buf += chunk;
323 dst_size -= chunk;
324 src_size -= chunk;
325
326 if (dst_size == 0) {
327 dst++;
328 dst_len--;
329 }
330
331 if (src_size == 0) {
332 src++;
333 src_len--;
334 }
335 }
336}
337
338unsigned int mmc_queue_map_sg(struct mmc_queue *mq)
339{
340 unsigned int sg_len;
341
342 if (!mq->bounce_buf)
343 return blk_rq_map_sg(mq->queue, mq->req, mq->sg);
344
345 BUG_ON(!mq->bounce_sg);
346
347 sg_len = blk_rq_map_sg(mq->queue, mq->req, mq->bounce_sg);
348
349 mq->bounce_sg_len = sg_len;
350
351 /*
352 * Shortcut in the event we only get a single entry.
353 */
354 if (sg_len == 1) {
355 memcpy(mq->sg, mq->bounce_sg, sizeof(struct scatterlist));
356 return 1;
357 }
358
359 mq->sg[0].page = virt_to_page(mq->bounce_buf);
360 mq->sg[0].offset = offset_in_page(mq->bounce_buf);
361 mq->sg[0].length = 0;
362
363 while (sg_len) {
364 mq->sg[0].length += mq->bounce_sg[sg_len - 1].length;
365 sg_len--;
366 }
367
368 return 1;
369}
370
371void mmc_queue_bounce_pre(struct mmc_queue *mq)
372{
373 if (!mq->bounce_buf)
374 return;
375
376 if (mq->bounce_sg_len == 1)
377 return;
378 if (rq_data_dir(mq->req) != WRITE)
379 return;
380
381 copy_sg(mq->sg, 1, mq->bounce_sg, mq->bounce_sg_len);
382}
383
384void mmc_queue_bounce_post(struct mmc_queue *mq)
385{
386 if (!mq->bounce_buf)
387 return;
388
389 if (mq->bounce_sg_len == 1)
390 return;
391 if (rq_data_dir(mq->req) != READ)
392 return;
393
394 copy_sg(mq->bounce_sg, mq->bounce_sg_len, mq->sg, 1);
395}
396
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
index 1590b3f3f1f7..64e66e0d4994 100644
--- a/drivers/mmc/card/queue.h
+++ b/drivers/mmc/card/queue.h
@@ -14,6 +14,9 @@ struct mmc_queue {
14 void *data; 14 void *data;
15 struct request_queue *queue; 15 struct request_queue *queue;
16 struct scatterlist *sg; 16 struct scatterlist *sg;
17 char *bounce_buf;
18 struct scatterlist *bounce_sg;
19 unsigned int bounce_sg_len;
17}; 20};
18 21
19extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *); 22extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *);
@@ -21,4 +24,8 @@ extern void mmc_cleanup_queue(struct mmc_queue *);
21extern void mmc_queue_suspend(struct mmc_queue *); 24extern void mmc_queue_suspend(struct mmc_queue *);
22extern void mmc_queue_resume(struct mmc_queue *); 25extern void mmc_queue_resume(struct mmc_queue *);
23 26
27extern unsigned int mmc_queue_map_sg(struct mmc_queue *);
28extern void mmc_queue_bounce_pre(struct mmc_queue *);
29extern void mmc_queue_bounce_post(struct mmc_queue *);
30
24#endif 31#endif
diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile
index 1075b02ae754..3fdd08c7f143 100644
--- a/drivers/mmc/core/Makefile
+++ b/drivers/mmc/core/Makefile
@@ -7,5 +7,6 @@ ifeq ($(CONFIG_MMC_DEBUG),y)
7endif 7endif
8 8
9obj-$(CONFIG_MMC) += mmc_core.o 9obj-$(CONFIG_MMC) += mmc_core.o
10mmc_core-y := core.o sysfs.o mmc.o mmc_ops.o sd.o sd_ops.o 10mmc_core-y := core.o sysfs.o bus.o host.o \
11 mmc.o mmc_ops.o sd.o sd_ops.o
11 12
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
new file mode 100644
index 000000000000..348b566bf4fd
--- /dev/null
+++ b/drivers/mmc/core/bus.c
@@ -0,0 +1,253 @@
1/*
2 * linux/drivers/mmc/core/bus.c
3 *
4 * Copyright (C) 2003 Russell King, All Rights Reserved.
5 * Copyright (C) 2007 Pierre Ossman
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * MMC card bus driver model
12 */
13
14#include <linux/device.h>
15#include <linux/err.h>
16
17#include <linux/mmc/card.h>
18#include <linux/mmc/host.h>
19
20#include "sysfs.h"
21#include "core.h"
22#include "bus.h"
23
24#define dev_to_mmc_card(d) container_of(d, struct mmc_card, dev)
25#define to_mmc_driver(d) container_of(d, struct mmc_driver, drv)
26
27static ssize_t mmc_type_show(struct device *dev,
28 struct device_attribute *attr, char *buf)
29{
30 struct mmc_card *card = dev_to_mmc_card(dev);
31
32 switch (card->type) {
33 case MMC_TYPE_MMC:
34 return sprintf(buf, "MMC\n");
35 case MMC_TYPE_SD:
36 return sprintf(buf, "SD\n");
37 default:
38 return -EFAULT;
39 }
40}
41
42static struct device_attribute mmc_dev_attrs[] = {
43 MMC_ATTR_RO(type),
44 __ATTR_NULL,
45};
46
47/*
48 * This currently matches any MMC driver to any MMC card - drivers
49 * themselves make the decision whether to drive this card in their
50 * probe method.
51 */
52static int mmc_bus_match(struct device *dev, struct device_driver *drv)
53{
54 return 1;
55}
56
57static int
58mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf,
59 int buf_size)
60{
61 struct mmc_card *card = dev_to_mmc_card(dev);
62 int retval = 0, i = 0, length = 0;
63
64#define add_env(fmt,val) do { \
65 retval = add_uevent_var(envp, num_envp, &i, \
66 buf, buf_size, &length, \
67 fmt, val); \
68 if (retval) \
69 return retval; \
70} while (0);
71
72 switch (card->type) {
73 case MMC_TYPE_MMC:
74 add_env("MMC_TYPE=%s", "MMC");
75 break;
76 case MMC_TYPE_SD:
77 add_env("MMC_TYPE=%s", "SD");
78 break;
79 }
80
81 add_env("MMC_NAME=%s", mmc_card_name(card));
82
83#undef add_env
84
85 envp[i] = NULL;
86
87 return 0;
88}
89
90static int mmc_bus_probe(struct device *dev)
91{
92 struct mmc_driver *drv = to_mmc_driver(dev->driver);
93 struct mmc_card *card = dev_to_mmc_card(dev);
94
95 return drv->probe(card);
96}
97
98static int mmc_bus_remove(struct device *dev)
99{
100 struct mmc_driver *drv = to_mmc_driver(dev->driver);
101 struct mmc_card *card = dev_to_mmc_card(dev);
102
103 drv->remove(card);
104
105 return 0;
106}
107
108static int mmc_bus_suspend(struct device *dev, pm_message_t state)
109{
110 struct mmc_driver *drv = to_mmc_driver(dev->driver);
111 struct mmc_card *card = dev_to_mmc_card(dev);
112 int ret = 0;
113
114 if (dev->driver && drv->suspend)
115 ret = drv->suspend(card, state);
116 return ret;
117}
118
119static int mmc_bus_resume(struct device *dev)
120{
121 struct mmc_driver *drv = to_mmc_driver(dev->driver);
122 struct mmc_card *card = dev_to_mmc_card(dev);
123 int ret = 0;
124
125 if (dev->driver && drv->resume)
126 ret = drv->resume(card);
127 return ret;
128}
129
130static struct bus_type mmc_bus_type = {
131 .name = "mmc",
132 .dev_attrs = mmc_dev_attrs,
133 .match = mmc_bus_match,
134 .uevent = mmc_bus_uevent,
135 .probe = mmc_bus_probe,
136 .remove = mmc_bus_remove,
137 .suspend = mmc_bus_suspend,
138 .resume = mmc_bus_resume,
139};
140
141int mmc_register_bus(void)
142{
143 return bus_register(&mmc_bus_type);
144}
145
146void mmc_unregister_bus(void)
147{
148 bus_unregister(&mmc_bus_type);
149}
150
151/**
152 * mmc_register_driver - register a media driver
153 * @drv: MMC media driver
154 */
155int mmc_register_driver(struct mmc_driver *drv)
156{
157 drv->drv.bus = &mmc_bus_type;
158 return driver_register(&drv->drv);
159}
160
161EXPORT_SYMBOL(mmc_register_driver);
162
163/**
164 * mmc_unregister_driver - unregister a media driver
165 * @drv: MMC media driver
166 */
167void mmc_unregister_driver(struct mmc_driver *drv)
168{
169 drv->drv.bus = &mmc_bus_type;
170 driver_unregister(&drv->drv);
171}
172
173EXPORT_SYMBOL(mmc_unregister_driver);
174
175static void mmc_release_card(struct device *dev)
176{
177 struct mmc_card *card = dev_to_mmc_card(dev);
178
179 kfree(card);
180}
181
182/*
183 * Allocate and initialise a new MMC card structure.
184 */
185struct mmc_card *mmc_alloc_card(struct mmc_host *host)
186{
187 struct mmc_card *card;
188
189 card = kmalloc(sizeof(struct mmc_card), GFP_KERNEL);
190 if (!card)
191 return ERR_PTR(-ENOMEM);
192
193 memset(card, 0, sizeof(struct mmc_card));
194
195 card->host = host;
196
197 device_initialize(&card->dev);
198
199 card->dev.parent = mmc_classdev(host);
200 card->dev.bus = &mmc_bus_type;
201 card->dev.release = mmc_release_card;
202
203 return card;
204}
205
206/*
207 * Register a new MMC card with the driver model.
208 */
209int mmc_add_card(struct mmc_card *card)
210{
211 int ret;
212
213 snprintf(card->dev.bus_id, sizeof(card->dev.bus_id),
214 "%s:%04x", mmc_hostname(card->host), card->rca);
215
216 card->dev.uevent_suppress = 1;
217
218 ret = device_add(&card->dev);
219 if (ret)
220 return ret;
221
222 if (card->host->bus_ops->sysfs_add) {
223 ret = card->host->bus_ops->sysfs_add(card->host, card);
224 if (ret) {
225 device_del(&card->dev);
226 return ret;
227 }
228 }
229
230 card->dev.uevent_suppress = 0;
231
232 kobject_uevent(&card->dev.kobj, KOBJ_ADD);
233
234 mmc_card_set_present(card);
235
236 return 0;
237}
238
239/*
240 * Unregister a new MMC card with the driver model, and
241 * (eventually) free it.
242 */
243void mmc_remove_card(struct mmc_card *card)
244{
245 if (mmc_card_present(card)) {
246 if (card->host->bus_ops->sysfs_remove)
247 card->host->bus_ops->sysfs_remove(card->host, card);
248 device_del(&card->dev);
249 }
250
251 put_device(&card->dev);
252}
253
diff --git a/drivers/mmc/core/bus.h b/drivers/mmc/core/bus.h
new file mode 100644
index 000000000000..4f35431116a8
--- /dev/null
+++ b/drivers/mmc/core/bus.h
@@ -0,0 +1,22 @@
1/*
2 * linux/drivers/mmc/core/bus.h
3 *
4 * Copyright (C) 2003 Russell King, All Rights Reserved.
5 * Copyright 2007 Pierre Ossman
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#ifndef _MMC_CORE_BUS_H
12#define _MMC_CORE_BUS_H
13
14struct mmc_card *mmc_alloc_card(struct mmc_host *host);
15int mmc_add_card(struct mmc_card *card);
16void mmc_remove_card(struct mmc_card *card);
17
18int mmc_register_bus(void);
19void mmc_unregister_bus(void);
20
21#endif
22
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 7385acfa1dd9..b5d8a6d90cca 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -27,7 +27,8 @@
27#include <linux/mmc/sd.h> 27#include <linux/mmc/sd.h>
28 28
29#include "core.h" 29#include "core.h"
30#include "sysfs.h" 30#include "bus.h"
31#include "host.h"
31 32
32#include "mmc_ops.h" 33#include "mmc_ops.h"
33#include "sd_ops.h" 34#include "sd_ops.h"
@@ -35,6 +36,25 @@
35extern int mmc_attach_mmc(struct mmc_host *host, u32 ocr); 36extern int mmc_attach_mmc(struct mmc_host *host, u32 ocr);
36extern int mmc_attach_sd(struct mmc_host *host, u32 ocr); 37extern int mmc_attach_sd(struct mmc_host *host, u32 ocr);
37 38
39static struct workqueue_struct *workqueue;
40
41/*
42 * Internal function. Schedule delayed work in the MMC work queue.
43 */
44static int mmc_schedule_delayed_work(struct delayed_work *work,
45 unsigned long delay)
46{
47 return queue_delayed_work(workqueue, work, delay);
48}
49
50/*
51 * Internal function. Flush all scheduled work from the MMC work queue.
52 */
53static void mmc_flush_scheduled_work(void)
54{
55 flush_workqueue(workqueue);
56}
57
38/** 58/**
39 * mmc_request_done - finish processing an MMC request 59 * mmc_request_done - finish processing an MMC request
40 * @host: MMC host which completed request 60 * @host: MMC host which completed request
@@ -369,22 +389,6 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing)
369} 389}
370 390
371/* 391/*
372 * Allocate a new MMC card
373 */
374struct mmc_card *mmc_alloc_card(struct mmc_host *host)
375{
376 struct mmc_card *card;
377
378 card = kmalloc(sizeof(struct mmc_card), GFP_KERNEL);
379 if (!card)
380 return ERR_PTR(-ENOMEM);
381
382 mmc_init_card(card, host);
383
384 return card;
385}
386
387/*
388 * Apply power to the MMC stack. This is a two-stage process. 392 * Apply power to the MMC stack. This is a two-stage process.
389 * First, we enable power to the card without the clock running. 393 * First, we enable power to the card without the clock running.
390 * We then wait a bit for the power to stabilise. Finally, 394 * We then wait a bit for the power to stabilise. Finally,
@@ -512,7 +516,7 @@ void mmc_detect_change(struct mmc_host *host, unsigned long delay)
512EXPORT_SYMBOL(mmc_detect_change); 516EXPORT_SYMBOL(mmc_detect_change);
513 517
514 518
515static void mmc_rescan(struct work_struct *work) 519void mmc_rescan(struct work_struct *work)
516{ 520{
517 struct mmc_host *host = 521 struct mmc_host *host =
518 container_of(work, struct mmc_host, detect.work); 522 container_of(work, struct mmc_host, detect.work);
@@ -561,69 +565,13 @@ static void mmc_rescan(struct work_struct *work)
561 } 565 }
562} 566}
563 567
564 568void mmc_start_host(struct mmc_host *host)
565/**
566 * mmc_alloc_host - initialise the per-host structure.
567 * @extra: sizeof private data structure
568 * @dev: pointer to host device model structure
569 *
570 * Initialise the per-host structure.
571 */
572struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
573{ 569{
574 struct mmc_host *host; 570 mmc_power_off(host);
575 571 mmc_detect_change(host, 0);
576 host = mmc_alloc_host_sysfs(extra, dev);
577 if (host) {
578 spin_lock_init(&host->lock);
579 init_waitqueue_head(&host->wq);
580 INIT_DELAYED_WORK(&host->detect, mmc_rescan);
581
582 /*
583 * By default, hosts do not support SGIO or large requests.
584 * They have to set these according to their abilities.
585 */
586 host->max_hw_segs = 1;
587 host->max_phys_segs = 1;
588 host->max_seg_size = PAGE_CACHE_SIZE;
589
590 host->max_req_size = PAGE_CACHE_SIZE;
591 host->max_blk_size = 512;
592 host->max_blk_count = PAGE_CACHE_SIZE / 512;
593 }
594
595 return host;
596}
597
598EXPORT_SYMBOL(mmc_alloc_host);
599
600/**
601 * mmc_add_host - initialise host hardware
602 * @host: mmc host
603 */
604int mmc_add_host(struct mmc_host *host)
605{
606 int ret;
607
608 ret = mmc_add_host_sysfs(host);
609 if (ret == 0) {
610 mmc_power_off(host);
611 mmc_detect_change(host, 0);
612 }
613
614 return ret;
615} 572}
616 573
617EXPORT_SYMBOL(mmc_add_host); 574void mmc_stop_host(struct mmc_host *host)
618
619/**
620 * mmc_remove_host - remove host hardware
621 * @host: mmc host
622 *
623 * Unregister and remove all cards associated with this host,
624 * and power down the MMC bus.
625 */
626void mmc_remove_host(struct mmc_host *host)
627{ 575{
628#ifdef CONFIG_MMC_DEBUG 576#ifdef CONFIG_MMC_DEBUG
629 unsigned long flags; 577 unsigned long flags;
@@ -648,24 +596,8 @@ void mmc_remove_host(struct mmc_host *host)
648 BUG_ON(host->card); 596 BUG_ON(host->card);
649 597
650 mmc_power_off(host); 598 mmc_power_off(host);
651 mmc_remove_host_sysfs(host);
652} 599}
653 600
654EXPORT_SYMBOL(mmc_remove_host);
655
656/**
657 * mmc_free_host - free the host structure
658 * @host: mmc host
659 *
660 * Free the host once all references to it have been dropped.
661 */
662void mmc_free_host(struct mmc_host *host)
663{
664 mmc_free_host_sysfs(host);
665}
666
667EXPORT_SYMBOL(mmc_free_host);
668
669#ifdef CONFIG_PM 601#ifdef CONFIG_PM
670 602
671/** 603/**
@@ -726,4 +658,31 @@ EXPORT_SYMBOL(mmc_resume_host);
726 658
727#endif 659#endif
728 660
661static int __init mmc_init(void)
662{
663 int ret;
664
665 workqueue = create_singlethread_workqueue("kmmcd");
666 if (!workqueue)
667 return -ENOMEM;
668
669 ret = mmc_register_bus();
670 if (ret == 0) {
671 ret = mmc_register_host_class();
672 if (ret)
673 mmc_unregister_bus();
674 }
675 return ret;
676}
677
678static void __exit mmc_exit(void)
679{
680 mmc_unregister_host_class();
681 mmc_unregister_bus();
682 destroy_workqueue(workqueue);
683}
684
685module_init(mmc_init);
686module_exit(mmc_exit);
687
729MODULE_LICENSE("GPL"); 688MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index 177264d090ac..ae006b30dd86 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -18,6 +18,8 @@
18struct mmc_bus_ops { 18struct mmc_bus_ops {
19 void (*remove)(struct mmc_host *); 19 void (*remove)(struct mmc_host *);
20 void (*detect)(struct mmc_host *); 20 void (*detect)(struct mmc_host *);
21 int (*sysfs_add)(struct mmc_host *, struct mmc_card *card);
22 void (*sysfs_remove)(struct mmc_host *, struct mmc_card *card);
21 void (*suspend)(struct mmc_host *); 23 void (*suspend)(struct mmc_host *);
22 void (*resume)(struct mmc_host *); 24 void (*resume)(struct mmc_host *);
23}; 25};
@@ -54,8 +56,6 @@ void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
54u32 mmc_select_voltage(struct mmc_host *host, u32 ocr); 56u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
55void mmc_set_timing(struct mmc_host *host, unsigned int timing); 57void mmc_set_timing(struct mmc_host *host, unsigned int timing);
56 58
57struct mmc_card *mmc_alloc_card(struct mmc_host *host);
58
59static inline void mmc_delay(unsigned int ms) 59static inline void mmc_delay(unsigned int ms)
60{ 60{
61 if (ms < 1000 / HZ) { 61 if (ms < 1000 / HZ) {
@@ -66,5 +66,9 @@ static inline void mmc_delay(unsigned int ms)
66 } 66 }
67} 67}
68 68
69void mmc_rescan(struct work_struct *work);
70void mmc_start_host(struct mmc_host *host);
71void mmc_stop_host(struct mmc_host *host);
72
69#endif 73#endif
70 74
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
new file mode 100644
index 000000000000..1433d95c40bb
--- /dev/null
+++ b/drivers/mmc/core/host.c
@@ -0,0 +1,156 @@
1/*
2 * linux/drivers/mmc/core/host.c
3 *
4 * Copyright (C) 2003 Russell King, All Rights Reserved.
5 * Copyright (C) 2007 Pierre Ossman
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * MMC host class device management
12 */
13
14#include <linux/device.h>
15#include <linux/err.h>
16#include <linux/idr.h>
17#include <linux/pagemap.h>
18
19#include <linux/mmc/host.h>
20
21#include "core.h"
22#include "host.h"
23
24#define cls_dev_to_mmc_host(d) container_of(d, struct mmc_host, class_dev)
25
26static void mmc_host_classdev_release(struct device *dev)
27{
28 struct mmc_host *host = cls_dev_to_mmc_host(dev);
29 kfree(host);
30}
31
32static struct class mmc_host_class = {
33 .name = "mmc_host",
34 .dev_release = mmc_host_classdev_release,
35};
36
37int mmc_register_host_class(void)
38{
39 return class_register(&mmc_host_class);
40}
41
42void mmc_unregister_host_class(void)
43{
44 class_unregister(&mmc_host_class);
45}
46
47static DEFINE_IDR(mmc_host_idr);
48static DEFINE_SPINLOCK(mmc_host_lock);
49
50/**
51 * mmc_alloc_host - initialise the per-host structure.
52 * @extra: sizeof private data structure
53 * @dev: pointer to host device model structure
54 *
55 * Initialise the per-host structure.
56 */
57struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
58{
59 struct mmc_host *host;
60
61 host = kmalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL);
62 if (!host)
63 return NULL;
64
65 memset(host, 0, sizeof(struct mmc_host) + extra);
66
67 host->parent = dev;
68 host->class_dev.parent = dev;
69 host->class_dev.class = &mmc_host_class;
70 device_initialize(&host->class_dev);
71
72 spin_lock_init(&host->lock);
73 init_waitqueue_head(&host->wq);
74 INIT_DELAYED_WORK(&host->detect, mmc_rescan);
75
76 /*
77 * By default, hosts do not support SGIO or large requests.
78 * They have to set these according to their abilities.
79 */
80 host->max_hw_segs = 1;
81 host->max_phys_segs = 1;
82 host->max_seg_size = PAGE_CACHE_SIZE;
83
84 host->max_req_size = PAGE_CACHE_SIZE;
85 host->max_blk_size = 512;
86 host->max_blk_count = PAGE_CACHE_SIZE / 512;
87
88 return host;
89}
90
91EXPORT_SYMBOL(mmc_alloc_host);
92
93/**
94 * mmc_add_host - initialise host hardware
95 * @host: mmc host
96 */
97int mmc_add_host(struct mmc_host *host)
98{
99 int err;
100
101 if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL))
102 return -ENOMEM;
103
104 spin_lock(&mmc_host_lock);
105 err = idr_get_new(&mmc_host_idr, host, &host->index);
106 spin_unlock(&mmc_host_lock);
107 if (err)
108 return err;
109
110 snprintf(host->class_dev.bus_id, BUS_ID_SIZE,
111 "mmc%d", host->index);
112
113 err = device_add(&host->class_dev);
114 if (err)
115 return err;
116
117 mmc_start_host(host);
118
119 return 0;
120}
121
122EXPORT_SYMBOL(mmc_add_host);
123
124/**
125 * mmc_remove_host - remove host hardware
126 * @host: mmc host
127 *
128 * Unregister and remove all cards associated with this host,
129 * and power down the MMC bus.
130 */
131void mmc_remove_host(struct mmc_host *host)
132{
133 mmc_stop_host(host);
134
135 device_del(&host->class_dev);
136
137 spin_lock(&mmc_host_lock);
138 idr_remove(&mmc_host_idr, host->index);
139 spin_unlock(&mmc_host_lock);
140}
141
142EXPORT_SYMBOL(mmc_remove_host);
143
144/**
145 * mmc_free_host - free the host structure
146 * @host: mmc host
147 *
148 * Free the host once all references to it have been dropped.
149 */
150void mmc_free_host(struct mmc_host *host)
151{
152 put_device(&host->class_dev);
153}
154
155EXPORT_SYMBOL(mmc_free_host);
156
diff --git a/drivers/mmc/core/host.h b/drivers/mmc/core/host.h
new file mode 100644
index 000000000000..c2dc3d2d9f9a
--- /dev/null
+++ b/drivers/mmc/core/host.h
@@ -0,0 +1,18 @@
1/*
2 * linux/drivers/mmc/core/host.h
3 *
4 * Copyright (C) 2003 Russell King, All Rights Reserved.
5 * Copyright 2007 Pierre Ossman
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#ifndef _MMC_CORE_HOST_H
12#define _MMC_CORE_HOST_H
13
14int mmc_register_host_class(void);
15void mmc_unregister_host_class(void);
16
17#endif
18
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 42cc2867ed7d..66f85bfa8dbb 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -18,6 +18,7 @@
18 18
19#include "core.h" 19#include "core.h"
20#include "sysfs.h" 20#include "sysfs.h"
21#include "bus.h"
21#include "mmc_ops.h" 22#include "mmc_ops.h"
22 23
23static const unsigned int tran_exp[] = { 24static const unsigned int tran_exp[] = {
@@ -236,7 +237,7 @@ out:
236 * In the case of a resume, "curcard" will contain the card 237 * In the case of a resume, "curcard" will contain the card
237 * we're trying to reinitialise. 238 * we're trying to reinitialise.
238 */ 239 */
239static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, 240static int mmc_init_card(struct mmc_host *host, u32 ocr,
240 struct mmc_card *oldcard) 241 struct mmc_card *oldcard)
241{ 242{
242 struct mmc_card *card; 243 struct mmc_card *card;
@@ -413,8 +414,7 @@ static void mmc_detect(struct mmc_host *host)
413 mmc_release_host(host); 414 mmc_release_host(host);
414 415
415 if (err != MMC_ERR_NONE) { 416 if (err != MMC_ERR_NONE) {
416 mmc_remove_card(host->card); 417 mmc_remove(host);
417 host->card = NULL;
418 418
419 mmc_claim_host(host); 419 mmc_claim_host(host);
420 mmc_detach_bus(host); 420 mmc_detach_bus(host);
@@ -422,6 +422,53 @@ static void mmc_detect(struct mmc_host *host)
422 } 422 }
423} 423}
424 424
425MMC_ATTR_FN(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
426 card->raw_cid[2], card->raw_cid[3]);
427MMC_ATTR_FN(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
428 card->raw_csd[2], card->raw_csd[3]);
429MMC_ATTR_FN(date, "%02d/%04d\n", card->cid.month, card->cid.year);
430MMC_ATTR_FN(fwrev, "0x%x\n", card->cid.fwrev);
431MMC_ATTR_FN(hwrev, "0x%x\n", card->cid.hwrev);
432MMC_ATTR_FN(manfid, "0x%06x\n", card->cid.manfid);
433MMC_ATTR_FN(name, "%s\n", card->cid.prod_name);
434MMC_ATTR_FN(oemid, "0x%04x\n", card->cid.oemid);
435MMC_ATTR_FN(serial, "0x%08x\n", card->cid.serial);
436
437static struct device_attribute mmc_dev_attrs[] = {
438 MMC_ATTR_RO(cid),
439 MMC_ATTR_RO(csd),
440 MMC_ATTR_RO(date),
441 MMC_ATTR_RO(fwrev),
442 MMC_ATTR_RO(hwrev),
443 MMC_ATTR_RO(manfid),
444 MMC_ATTR_RO(name),
445 MMC_ATTR_RO(oemid),
446 MMC_ATTR_RO(serial),
447 __ATTR_NULL,
448};
449
450/*
451 * Adds sysfs entries as relevant.
452 */
453static int mmc_sysfs_add(struct mmc_host *host, struct mmc_card *card)
454{
455 int ret;
456
457 ret = mmc_add_attrs(card, mmc_dev_attrs);
458 if (ret < 0)
459 return ret;
460
461 return 0;
462}
463
464/*
465 * Removes the sysfs entries added by mmc_sysfs_add().
466 */
467static void mmc_sysfs_remove(struct mmc_host *host, struct mmc_card *card)
468{
469 mmc_remove_attrs(card, mmc_dev_attrs);
470}
471
425#ifdef CONFIG_MMC_UNSAFE_RESUME 472#ifdef CONFIG_MMC_UNSAFE_RESUME
426 473
427/* 474/*
@@ -453,11 +500,9 @@ static void mmc_resume(struct mmc_host *host)
453 500
454 mmc_claim_host(host); 501 mmc_claim_host(host);
455 502
456 err = mmc_sd_init_card(host, host->ocr, host->card); 503 err = mmc_init_card(host, host->ocr, host->card);
457 if (err != MMC_ERR_NONE) { 504 if (err != MMC_ERR_NONE) {
458 mmc_remove_card(host->card); 505 mmc_remove(host);
459 host->card = NULL;
460
461 mmc_detach_bus(host); 506 mmc_detach_bus(host);
462 } 507 }
463 508
@@ -474,6 +519,8 @@ static void mmc_resume(struct mmc_host *host)
474static const struct mmc_bus_ops mmc_ops = { 519static const struct mmc_bus_ops mmc_ops = {
475 .remove = mmc_remove, 520 .remove = mmc_remove,
476 .detect = mmc_detect, 521 .detect = mmc_detect,
522 .sysfs_add = mmc_sysfs_add,
523 .sysfs_remove = mmc_sysfs_remove,
477 .suspend = mmc_suspend, 524 .suspend = mmc_suspend,
478 .resume = mmc_resume, 525 .resume = mmc_resume,
479}; 526};
@@ -512,13 +559,13 @@ int mmc_attach_mmc(struct mmc_host *host, u32 ocr)
512 /* 559 /*
513 * Detect and init the card. 560 * Detect and init the card.
514 */ 561 */
515 err = mmc_sd_init_card(host, host->ocr, NULL); 562 err = mmc_init_card(host, host->ocr, NULL);
516 if (err != MMC_ERR_NONE) 563 if (err != MMC_ERR_NONE)
517 goto err; 564 goto err;
518 565
519 mmc_release_host(host); 566 mmc_release_host(host);
520 567
521 err = mmc_register_card(host->card); 568 err = mmc_add_card(host->card);
522 if (err) 569 if (err)
523 goto reclaim_host; 570 goto reclaim_host;
524 571
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 918477c490b0..1240684083f1 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -19,11 +19,10 @@
19 19
20#include "core.h" 20#include "core.h"
21#include "sysfs.h" 21#include "sysfs.h"
22#include "bus.h"
22#include "mmc_ops.h" 23#include "mmc_ops.h"
23#include "sd_ops.h" 24#include "sd_ops.h"
24 25
25#include "core.h"
26
27static const unsigned int tran_exp[] = { 26static const unsigned int tran_exp[] = {
28 10000, 100000, 1000000, 10000000, 27 10000, 100000, 1000000, 10000000,
29 0, 0, 0, 0 28 0, 0, 0, 0
@@ -487,8 +486,7 @@ static void mmc_sd_detect(struct mmc_host *host)
487 mmc_release_host(host); 486 mmc_release_host(host);
488 487
489 if (err != MMC_ERR_NONE) { 488 if (err != MMC_ERR_NONE) {
490 mmc_remove_card(host->card); 489 mmc_sd_remove(host);
491 host->card = NULL;
492 490
493 mmc_claim_host(host); 491 mmc_claim_host(host);
494 mmc_detach_bus(host); 492 mmc_detach_bus(host);
@@ -496,6 +494,55 @@ static void mmc_sd_detect(struct mmc_host *host)
496 } 494 }
497} 495}
498 496
497MMC_ATTR_FN(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
498 card->raw_cid[2], card->raw_cid[3]);
499MMC_ATTR_FN(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
500 card->raw_csd[2], card->raw_csd[3]);
501MMC_ATTR_FN(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]);
502MMC_ATTR_FN(date, "%02d/%04d\n", card->cid.month, card->cid.year);
503MMC_ATTR_FN(fwrev, "0x%x\n", card->cid.fwrev);
504MMC_ATTR_FN(hwrev, "0x%x\n", card->cid.hwrev);
505MMC_ATTR_FN(manfid, "0x%06x\n", card->cid.manfid);
506MMC_ATTR_FN(name, "%s\n", card->cid.prod_name);
507MMC_ATTR_FN(oemid, "0x%04x\n", card->cid.oemid);
508MMC_ATTR_FN(serial, "0x%08x\n", card->cid.serial);
509
510static struct device_attribute mmc_sd_dev_attrs[] = {
511 MMC_ATTR_RO(cid),
512 MMC_ATTR_RO(csd),
513 MMC_ATTR_RO(scr),
514 MMC_ATTR_RO(date),
515 MMC_ATTR_RO(fwrev),
516 MMC_ATTR_RO(hwrev),
517 MMC_ATTR_RO(manfid),
518 MMC_ATTR_RO(name),
519 MMC_ATTR_RO(oemid),
520 MMC_ATTR_RO(serial),
521 __ATTR_NULL,
522};
523
524/*
525 * Adds sysfs entries as relevant.
526 */
527static int mmc_sd_sysfs_add(struct mmc_host *host, struct mmc_card *card)
528{
529 int ret;
530
531 ret = mmc_add_attrs(card, mmc_sd_dev_attrs);
532 if (ret < 0)
533 return ret;
534
535 return 0;
536}
537
538/*
539 * Removes the sysfs entries added by mmc_sysfs_add().
540 */
541static void mmc_sd_sysfs_remove(struct mmc_host *host, struct mmc_card *card)
542{
543 mmc_remove_attrs(card, mmc_sd_dev_attrs);
544}
545
499#ifdef CONFIG_MMC_UNSAFE_RESUME 546#ifdef CONFIG_MMC_UNSAFE_RESUME
500 547
501/* 548/*
@@ -529,9 +576,7 @@ static void mmc_sd_resume(struct mmc_host *host)
529 576
530 err = mmc_sd_init_card(host, host->ocr, host->card); 577 err = mmc_sd_init_card(host, host->ocr, host->card);
531 if (err != MMC_ERR_NONE) { 578 if (err != MMC_ERR_NONE) {
532 mmc_remove_card(host->card); 579 mmc_sd_remove(host);
533 host->card = NULL;
534
535 mmc_detach_bus(host); 580 mmc_detach_bus(host);
536 } 581 }
537 582
@@ -548,6 +593,8 @@ static void mmc_sd_resume(struct mmc_host *host)
548static const struct mmc_bus_ops mmc_sd_ops = { 593static const struct mmc_bus_ops mmc_sd_ops = {
549 .remove = mmc_sd_remove, 594 .remove = mmc_sd_remove,
550 .detect = mmc_sd_detect, 595 .detect = mmc_sd_detect,
596 .sysfs_add = mmc_sd_sysfs_add,
597 .sysfs_remove = mmc_sd_sysfs_remove,
551 .suspend = mmc_sd_suspend, 598 .suspend = mmc_sd_suspend,
552 .resume = mmc_sd_resume, 599 .resume = mmc_sd_resume,
553}; 600};
@@ -599,7 +646,7 @@ int mmc_attach_sd(struct mmc_host *host, u32 ocr)
599 646
600 mmc_release_host(host); 647 mmc_release_host(host);
601 648
602 err = mmc_register_card(host->card); 649 err = mmc_add_card(host->card);
603 if (err) 650 if (err)
604 goto reclaim_host; 651 goto reclaim_host;
605 652
diff --git a/drivers/mmc/core/sysfs.c b/drivers/mmc/core/sysfs.c
index 843b1fbba557..00a97e70f914 100644
--- a/drivers/mmc/core/sysfs.c
+++ b/drivers/mmc/core/sysfs.c
@@ -2,6 +2,7 @@
2 * linux/drivers/mmc/core/sysfs.c 2 * linux/drivers/mmc/core/sysfs.c
3 * 3 *
4 * Copyright (C) 2003 Russell King, All Rights Reserved. 4 * Copyright (C) 2003 Russell King, All Rights Reserved.
5 * Copyright 2007 Pierre Ossman
5 * 6 *
6 * This program is free software; you can redistribute it and/or modify 7 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as 8 * it under the terms of the GNU General Public License version 2 as
@@ -9,352 +10,34 @@
9 * 10 *
10 * MMC sysfs/driver model support. 11 * MMC sysfs/driver model support.
11 */ 12 */
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/device.h> 13#include <linux/device.h>
15#include <linux/idr.h>
16#include <linux/workqueue.h>
17 14
18#include <linux/mmc/card.h> 15#include <linux/mmc/card.h>
19#include <linux/mmc/host.h>
20 16
21#include "sysfs.h" 17#include "sysfs.h"
22 18
23#define dev_to_mmc_card(d) container_of(d, struct mmc_card, dev) 19int mmc_add_attrs(struct mmc_card *card, struct device_attribute *attrs)
24#define to_mmc_driver(d) container_of(d, struct mmc_driver, drv)
25#define cls_dev_to_mmc_host(d) container_of(d, struct mmc_host, class_dev)
26
27#define MMC_ATTR(name, fmt, args...) \
28static ssize_t mmc_##name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
29{ \
30 struct mmc_card *card = dev_to_mmc_card(dev); \
31 return sprintf(buf, fmt, args); \
32}
33
34MMC_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1],
35 card->raw_cid[2], card->raw_cid[3]);
36MMC_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1],
37 card->raw_csd[2], card->raw_csd[3]);
38MMC_ATTR(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]);
39MMC_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year);
40MMC_ATTR(fwrev, "0x%x\n", card->cid.fwrev);
41MMC_ATTR(hwrev, "0x%x\n", card->cid.hwrev);
42MMC_ATTR(manfid, "0x%06x\n", card->cid.manfid);
43MMC_ATTR(name, "%s\n", card->cid.prod_name);
44MMC_ATTR(oemid, "0x%04x\n", card->cid.oemid);
45MMC_ATTR(serial, "0x%08x\n", card->cid.serial);
46
47#define MMC_ATTR_RO(name) __ATTR(name, S_IRUGO, mmc_##name##_show, NULL)
48
49static struct device_attribute mmc_dev_attrs[] = {
50 MMC_ATTR_RO(cid),
51 MMC_ATTR_RO(csd),
52 MMC_ATTR_RO(date),
53 MMC_ATTR_RO(fwrev),
54 MMC_ATTR_RO(hwrev),
55 MMC_ATTR_RO(manfid),
56 MMC_ATTR_RO(name),
57 MMC_ATTR_RO(oemid),
58 MMC_ATTR_RO(serial),
59 __ATTR_NULL
60};
61
62static struct device_attribute mmc_dev_attr_scr = MMC_ATTR_RO(scr);
63
64
65static void mmc_release_card(struct device *dev)
66{
67 struct mmc_card *card = dev_to_mmc_card(dev);
68
69 kfree(card);
70}
71
72/*
73 * This currently matches any MMC driver to any MMC card - drivers
74 * themselves make the decision whether to drive this card in their
75 * probe method.
76 */
77static int mmc_bus_match(struct device *dev, struct device_driver *drv)
78{
79 return 1;
80}
81
82static int
83mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf,
84 int buf_size)
85{
86 struct mmc_card *card = dev_to_mmc_card(dev);
87 char ccc[13];
88 int retval = 0, i = 0, length = 0;
89
90#define add_env(fmt,val) do { \
91 retval = add_uevent_var(envp, num_envp, &i, \
92 buf, buf_size, &length, \
93 fmt, val); \
94 if (retval) \
95 return retval; \
96} while (0);
97
98 for (i = 0; i < 12; i++)
99 ccc[i] = card->csd.cmdclass & (1 << i) ? '1' : '0';
100 ccc[12] = '\0';
101
102 add_env("MMC_CCC=%s", ccc);
103 add_env("MMC_MANFID=%06x", card->cid.manfid);
104 add_env("MMC_NAME=%s", mmc_card_name(card));
105 add_env("MMC_OEMID=%04x", card->cid.oemid);
106#undef add_env
107 envp[i] = NULL;
108
109 return 0;
110}
111
112static int mmc_bus_suspend(struct device *dev, pm_message_t state)
113{
114 struct mmc_driver *drv = to_mmc_driver(dev->driver);
115 struct mmc_card *card = dev_to_mmc_card(dev);
116 int ret = 0;
117
118 if (dev->driver && drv->suspend)
119 ret = drv->suspend(card, state);
120 return ret;
121}
122
123static int mmc_bus_resume(struct device *dev)
124{
125 struct mmc_driver *drv = to_mmc_driver(dev->driver);
126 struct mmc_card *card = dev_to_mmc_card(dev);
127 int ret = 0;
128
129 if (dev->driver && drv->resume)
130 ret = drv->resume(card);
131 return ret;
132}
133
134static int mmc_bus_probe(struct device *dev)
135{
136 struct mmc_driver *drv = to_mmc_driver(dev->driver);
137 struct mmc_card *card = dev_to_mmc_card(dev);
138
139 return drv->probe(card);
140}
141
142static int mmc_bus_remove(struct device *dev)
143{
144 struct mmc_driver *drv = to_mmc_driver(dev->driver);
145 struct mmc_card *card = dev_to_mmc_card(dev);
146
147 drv->remove(card);
148
149 return 0;
150}
151
152static struct bus_type mmc_bus_type = {
153 .name = "mmc",
154 .dev_attrs = mmc_dev_attrs,
155 .match = mmc_bus_match,
156 .uevent = mmc_bus_uevent,
157 .probe = mmc_bus_probe,
158 .remove = mmc_bus_remove,
159 .suspend = mmc_bus_suspend,
160 .resume = mmc_bus_resume,
161};
162
163/**
164 * mmc_register_driver - register a media driver
165 * @drv: MMC media driver
166 */
167int mmc_register_driver(struct mmc_driver *drv)
168{
169 drv->drv.bus = &mmc_bus_type;
170 return driver_register(&drv->drv);
171}
172
173EXPORT_SYMBOL(mmc_register_driver);
174
175/**
176 * mmc_unregister_driver - unregister a media driver
177 * @drv: MMC media driver
178 */
179void mmc_unregister_driver(struct mmc_driver *drv)
180{
181 drv->drv.bus = &mmc_bus_type;
182 driver_unregister(&drv->drv);
183}
184
185EXPORT_SYMBOL(mmc_unregister_driver);
186
187
188/*
189 * Internal function. Initialise a MMC card structure.
190 */
191void mmc_init_card(struct mmc_card *card, struct mmc_host *host)
192{
193 memset(card, 0, sizeof(struct mmc_card));
194 card->host = host;
195 device_initialize(&card->dev);
196 card->dev.parent = mmc_classdev(host);
197 card->dev.bus = &mmc_bus_type;
198 card->dev.release = mmc_release_card;
199}
200
201/*
202 * Internal function. Register a new MMC card with the driver model.
203 */
204int mmc_register_card(struct mmc_card *card)
205{ 20{
206 int ret; 21 int error = 0;
22 int i;
207 23
208 snprintf(card->dev.bus_id, sizeof(card->dev.bus_id), 24 for (i = 0; attr_name(attrs[i]); i++) {
209 "%s:%04x", mmc_hostname(card->host), card->rca); 25 error = device_create_file(&card->dev, &attrs[i]);
210 26 if (error) {
211 ret = device_add(&card->dev); 27 while (--i >= 0)
212 if (ret == 0) { 28 device_remove_file(&card->dev, &attrs[i]);
213 if (mmc_card_sd(card)) { 29 break;
214 ret = device_create_file(&card->dev, &mmc_dev_attr_scr);
215 if (ret)
216 device_del(&card->dev);
217 } 30 }
218 } 31 }
219 if (ret == 0)
220 mmc_card_set_present(card);
221 return ret;
222}
223
224/*
225 * Internal function. Unregister a new MMC card with the
226 * driver model, and (eventually) free it.
227 */
228void mmc_remove_card(struct mmc_card *card)
229{
230 if (mmc_card_present(card)) {
231 if (mmc_card_sd(card))
232 device_remove_file(&card->dev, &mmc_dev_attr_scr);
233
234 device_del(&card->dev);
235 }
236
237 put_device(&card->dev);
238}
239
240
241static void mmc_host_classdev_release(struct device *dev)
242{
243 struct mmc_host *host = cls_dev_to_mmc_host(dev);
244 kfree(host);
245}
246
247static struct class mmc_host_class = {
248 .name = "mmc_host",
249 .dev_release = mmc_host_classdev_release,
250};
251
252static DEFINE_IDR(mmc_host_idr);
253static DEFINE_SPINLOCK(mmc_host_lock);
254
255/*
256 * Internal function. Allocate a new MMC host.
257 */
258struct mmc_host *mmc_alloc_host_sysfs(int extra, struct device *dev)
259{
260 struct mmc_host *host;
261
262 host = kmalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL);
263 if (host) {
264 memset(host, 0, sizeof(struct mmc_host) + extra);
265
266 host->parent = dev;
267 host->class_dev.parent = dev;
268 host->class_dev.class = &mmc_host_class;
269 device_initialize(&host->class_dev);
270 }
271 32
272 return host; 33 return error;
273} 34}
274 35
275/* 36void mmc_remove_attrs(struct mmc_card *card, struct device_attribute *attrs)
276 * Internal function. Register a new MMC host with the MMC class.
277 */
278int mmc_add_host_sysfs(struct mmc_host *host)
279{ 37{
280 int err; 38 int i;
281
282 if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL))
283 return -ENOMEM;
284
285 spin_lock(&mmc_host_lock);
286 err = idr_get_new(&mmc_host_idr, host, &host->index);
287 spin_unlock(&mmc_host_lock);
288 if (err)
289 return err;
290
291 snprintf(host->class_dev.bus_id, BUS_ID_SIZE,
292 "mmc%d", host->index);
293
294 return device_add(&host->class_dev);
295}
296 39
297/* 40 for (i = 0; attr_name(attrs[i]); i++)
298 * Internal function. Unregister a MMC host with the MMC class. 41 device_remove_file(&card->dev, &attrs[i]);
299 */
300void mmc_remove_host_sysfs(struct mmc_host *host)
301{
302 device_del(&host->class_dev);
303
304 spin_lock(&mmc_host_lock);
305 idr_remove(&mmc_host_idr, host->index);
306 spin_unlock(&mmc_host_lock);
307}
308
309/*
310 * Internal function. Free a MMC host.
311 */
312void mmc_free_host_sysfs(struct mmc_host *host)
313{
314 put_device(&host->class_dev);
315}
316
317static struct workqueue_struct *workqueue;
318
319/*
320 * Internal function. Schedule delayed work in the MMC work queue.
321 */
322int mmc_schedule_delayed_work(struct delayed_work *work, unsigned long delay)
323{
324 return queue_delayed_work(workqueue, work, delay);
325}
326
327/*
328 * Internal function. Flush all scheduled work from the MMC work queue.
329 */
330void mmc_flush_scheduled_work(void)
331{
332 flush_workqueue(workqueue);
333}
334
335static int __init mmc_init(void)
336{
337 int ret;
338
339 workqueue = create_singlethread_workqueue("kmmcd");
340 if (!workqueue)
341 return -ENOMEM;
342
343 ret = bus_register(&mmc_bus_type);
344 if (ret == 0) {
345 ret = class_register(&mmc_host_class);
346 if (ret)
347 bus_unregister(&mmc_bus_type);
348 }
349 return ret;
350}
351
352static void __exit mmc_exit(void)
353{
354 class_unregister(&mmc_host_class);
355 bus_unregister(&mmc_bus_type);
356 destroy_workqueue(workqueue);
357} 42}
358 43
359module_init(mmc_init);
360module_exit(mmc_exit);
diff --git a/drivers/mmc/core/sysfs.h b/drivers/mmc/core/sysfs.h
index 80e29b358282..4b8f670bd10f 100644
--- a/drivers/mmc/core/sysfs.h
+++ b/drivers/mmc/core/sysfs.h
@@ -11,17 +11,16 @@
11#ifndef _MMC_CORE_SYSFS_H 11#ifndef _MMC_CORE_SYSFS_H
12#define _MMC_CORE_SYSFS_H 12#define _MMC_CORE_SYSFS_H
13 13
14void mmc_init_card(struct mmc_card *card, struct mmc_host *host); 14#define MMC_ATTR_FN(name, fmt, args...) \
15int mmc_register_card(struct mmc_card *card); 15static ssize_t mmc_##name##_show (struct device *dev, struct device_attribute *attr, char *buf) \
16void mmc_remove_card(struct mmc_card *card); 16{ \
17 struct mmc_card *card = container_of(dev, struct mmc_card, dev);\
18 return sprintf(buf, fmt, args); \
19}
17 20
18struct mmc_host *mmc_alloc_host_sysfs(int extra, struct device *dev); 21#define MMC_ATTR_RO(name) __ATTR(name, S_IRUGO, mmc_##name##_show, NULL)
19int mmc_add_host_sysfs(struct mmc_host *host);
20void mmc_remove_host_sysfs(struct mmc_host *host);
21void mmc_free_host_sysfs(struct mmc_host *host);
22 22
23int mmc_schedule_work(struct work_struct *work); 23int mmc_add_attrs(struct mmc_card *card, struct device_attribute *attrs);
24int mmc_schedule_delayed_work(struct delayed_work *work, unsigned long delay); 24void mmc_remove_attrs(struct mmc_card *card, struct device_attribute *attrs);
25void mmc_flush_scheduled_work(void);
26 25
27#endif 26#endif
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index 5b00c194b628..28c881895ab7 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -78,8 +78,6 @@
78 78
79#define DRIVER_NAME "at91_mci" 79#define DRIVER_NAME "at91_mci"
80 80
81#undef SUPPORT_4WIRE
82
83#define FL_SENT_COMMAND (1 << 0) 81#define FL_SENT_COMMAND (1 << 0)
84#define FL_SENT_STOP (1 << 1) 82#define FL_SENT_STOP (1 << 1)
85 83
@@ -131,7 +129,7 @@ struct at91mci_host
131/* 129/*
132 * Copy from sg to a dma block - used for transfers 130 * Copy from sg to a dma block - used for transfers
133 */ 131 */
134static inline void at91mci_sg_to_dma(struct at91mci_host *host, struct mmc_data *data) 132static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data *data)
135{ 133{
136 unsigned int len, i, size; 134 unsigned int len, i, size;
137 unsigned *dmabuf = host->buffer; 135 unsigned *dmabuf = host->buffer;
@@ -180,7 +178,7 @@ static inline void at91mci_sg_to_dma(struct at91mci_host *host, struct mmc_data
180/* 178/*
181 * Prepare a dma read 179 * Prepare a dma read
182 */ 180 */
183static void at91mci_pre_dma_read(struct at91mci_host *host) 181static void at91_mci_pre_dma_read(struct at91mci_host *host)
184{ 182{
185 int i; 183 int i;
186 struct scatterlist *sg; 184 struct scatterlist *sg;
@@ -248,7 +246,7 @@ static void at91mci_pre_dma_read(struct at91mci_host *host)
248/* 246/*
249 * Handle after a dma read 247 * Handle after a dma read
250 */ 248 */
251static void at91mci_post_dma_read(struct at91mci_host *host) 249static void at91_mci_post_dma_read(struct at91mci_host *host)
252{ 250{
253 struct mmc_command *cmd; 251 struct mmc_command *cmd;
254 struct mmc_data *data; 252 struct mmc_data *data;
@@ -268,8 +266,6 @@ static void at91mci_post_dma_read(struct at91mci_host *host)
268 } 266 }
269 267
270 while (host->in_use_index < host->transfer_index) { 268 while (host->in_use_index < host->transfer_index) {
271 unsigned int *buffer;
272
273 struct scatterlist *sg; 269 struct scatterlist *sg;
274 270
275 pr_debug("finishing index %d\n", host->in_use_index); 271 pr_debug("finishing index %d\n", host->in_use_index);
@@ -280,29 +276,31 @@ static void at91mci_post_dma_read(struct at91mci_host *host)
280 276
281 dma_unmap_page(NULL, sg->dma_address, sg->length, DMA_FROM_DEVICE); 277 dma_unmap_page(NULL, sg->dma_address, sg->length, DMA_FROM_DEVICE);
282 278
283 /* Swap the contents of the buffer */
284 buffer = kmap_atomic(sg->page, KM_BIO_SRC_IRQ) + sg->offset;
285 pr_debug("buffer = %p, length = %d\n", buffer, sg->length);
286
287 data->bytes_xfered += sg->length; 279 data->bytes_xfered += sg->length;
288 280
289 if (cpu_is_at91rm9200()) { /* AT91RM9200 errata */ 281 if (cpu_is_at91rm9200()) { /* AT91RM9200 errata */
282 unsigned int *buffer;
290 int index; 283 int index;
291 284
285 /* Swap the contents of the buffer */
286 buffer = kmap_atomic(sg->page, KM_BIO_SRC_IRQ) + sg->offset;
287 pr_debug("buffer = %p, length = %d\n", buffer, sg->length);
288
292 for (index = 0; index < (sg->length / 4); index++) 289 for (index = 0; index < (sg->length / 4); index++)
293 buffer[index] = swab32(buffer[index]); 290 buffer[index] = swab32(buffer[index]);
291
292 kunmap_atomic(buffer, KM_BIO_SRC_IRQ);
294 } 293 }
295 294
296 kunmap_atomic(buffer, KM_BIO_SRC_IRQ);
297 flush_dcache_page(sg->page); 295 flush_dcache_page(sg->page);
298 } 296 }
299 297
300 /* Is there another transfer to trigger? */ 298 /* Is there another transfer to trigger? */
301 if (host->transfer_index < data->sg_len) 299 if (host->transfer_index < data->sg_len)
302 at91mci_pre_dma_read(host); 300 at91_mci_pre_dma_read(host);
303 else { 301 else {
302 at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_ENDRX);
304 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_RXBUFF); 303 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_RXBUFF);
305 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS);
306 } 304 }
307 305
308 pr_debug("post dma read done\n"); 306 pr_debug("post dma read done\n");
@@ -323,7 +321,6 @@ static void at91_mci_handle_transmitted(struct at91mci_host *host)
323 321
324 /* Now wait for cmd ready */ 322 /* Now wait for cmd ready */
325 at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_TXBUFE); 323 at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_TXBUFE);
326 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY);
327 324
328 cmd = host->cmd; 325 cmd = host->cmd;
329 if (!cmd) return; 326 if (!cmd) return;
@@ -331,18 +328,53 @@ static void at91_mci_handle_transmitted(struct at91mci_host *host)
331 data = cmd->data; 328 data = cmd->data;
332 if (!data) return; 329 if (!data) return;
333 330
331 if (cmd->data->flags & MMC_DATA_MULTI) {
332 pr_debug("multiple write : wait for BLKE...\n");
333 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE);
334 } else
335 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY);
336
334 data->bytes_xfered = host->total_length; 337 data->bytes_xfered = host->total_length;
335} 338}
336 339
340/*Handle after command sent ready*/
341static int at91_mci_handle_cmdrdy(struct at91mci_host *host)
342{
343 if (!host->cmd)
344 return 1;
345 else if (!host->cmd->data) {
346 if (host->flags & FL_SENT_STOP) {
347 /*After multi block write, we must wait for NOTBUSY*/
348 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY);
349 } else return 1;
350 } else if (host->cmd->data->flags & MMC_DATA_WRITE) {
351 /*After sendding multi-block-write command, start DMA transfer*/
352 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_TXBUFE);
353 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE);
354 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
355 }
356
357 /* command not completed, have to wait */
358 return 0;
359}
360
361
337/* 362/*
338 * Enable the controller 363 * Enable the controller
339 */ 364 */
340static void at91_mci_enable(struct at91mci_host *host) 365static void at91_mci_enable(struct at91mci_host *host)
341{ 366{
367 unsigned int mr;
368
342 at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN); 369 at91_mci_write(host, AT91_MCI_CR, AT91_MCI_MCIEN);
343 at91_mci_write(host, AT91_MCI_IDR, 0xffffffff); 370 at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);
344 at91_mci_write(host, AT91_MCI_DTOR, AT91_MCI_DTOMUL_1M | AT91_MCI_DTOCYC); 371 at91_mci_write(host, AT91_MCI_DTOR, AT91_MCI_DTOMUL_1M | AT91_MCI_DTOCYC);
345 at91_mci_write(host, AT91_MCI_MR, AT91_MCI_PDCMODE | 0x34a); 372 mr = AT91_MCI_PDCMODE | 0x34a;
373
374 if (cpu_is_at91sam9260() || cpu_is_at91sam9263())
375 mr |= AT91_MCI_RDPROOF | AT91_MCI_WRPROOF;
376
377 at91_mci_write(host, AT91_MCI_MR, mr);
346 378
347 /* use Slot A or B (only one at same time) */ 379 /* use Slot A or B (only one at same time) */
348 at91_mci_write(host, AT91_MCI_SDCR, host->board->slot_b); 380 at91_mci_write(host, AT91_MCI_SDCR, host->board->slot_b);
@@ -358,9 +390,8 @@ static void at91_mci_disable(struct at91mci_host *host)
358 390
359/* 391/*
360 * Send a command 392 * Send a command
361 * return the interrupts to enable
362 */ 393 */
363static unsigned int at91_mci_send_command(struct at91mci_host *host, struct mmc_command *cmd) 394static void at91_mci_send_command(struct at91mci_host *host, struct mmc_command *cmd)
364{ 395{
365 unsigned int cmdr, mr; 396 unsigned int cmdr, mr;
366 unsigned int block_length; 397 unsigned int block_length;
@@ -371,8 +402,7 @@ static unsigned int at91_mci_send_command(struct at91mci_host *host, struct mmc_
371 402
372 host->cmd = cmd; 403 host->cmd = cmd;
373 404
374 /* Not sure if this is needed */ 405 /* Needed for leaving busy state before CMD1 */
375#if 0
376 if ((at91_mci_read(host, AT91_MCI_SR) & AT91_MCI_RTOE) && (cmd->opcode == 1)) { 406 if ((at91_mci_read(host, AT91_MCI_SR) & AT91_MCI_RTOE) && (cmd->opcode == 1)) {
377 pr_debug("Clearing timeout\n"); 407 pr_debug("Clearing timeout\n");
378 at91_mci_write(host, AT91_MCI_ARGR, 0); 408 at91_mci_write(host, AT91_MCI_ARGR, 0);
@@ -382,7 +412,7 @@ static unsigned int at91_mci_send_command(struct at91mci_host *host, struct mmc_
382 pr_debug("Clearing: SR = %08X\n", at91_mci_read(host, AT91_MCI_SR)); 412 pr_debug("Clearing: SR = %08X\n", at91_mci_read(host, AT91_MCI_SR));
383 } 413 }
384 } 414 }
385#endif 415
386 cmdr = cmd->opcode; 416 cmdr = cmd->opcode;
387 417
388 if (mmc_resp_type(cmd) == MMC_RSP_NONE) 418 if (mmc_resp_type(cmd) == MMC_RSP_NONE)
@@ -439,50 +469,48 @@ static unsigned int at91_mci_send_command(struct at91mci_host *host, struct mmc_
439 at91_mci_write(host, ATMEL_PDC_TCR, 0); 469 at91_mci_write(host, ATMEL_PDC_TCR, 0);
440 at91_mci_write(host, ATMEL_PDC_TNPR, 0); 470 at91_mci_write(host, ATMEL_PDC_TNPR, 0);
441 at91_mci_write(host, ATMEL_PDC_TNCR, 0); 471 at91_mci_write(host, ATMEL_PDC_TNCR, 0);
472 ier = AT91_MCI_CMDRDY;
473 } else {
474 /* zero block length and PDC mode */
475 mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff;
476 at91_mci_write(host, AT91_MCI_MR, mr | (block_length << 16) | AT91_MCI_PDCMODE);
442 477
443 at91_mci_write(host, AT91_MCI_ARGR, cmd->arg); 478 /*
444 at91_mci_write(host, AT91_MCI_CMDR, cmdr); 479 * Disable the PDC controller
445 return AT91_MCI_CMDRDY; 480 */
446 } 481 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS);
447
448 mr = at91_mci_read(host, AT91_MCI_MR) & 0x7fff; /* zero block length and PDC mode */
449 at91_mci_write(host, AT91_MCI_MR, mr | (block_length << 16) | AT91_MCI_PDCMODE);
450
451 /*
452 * Disable the PDC controller
453 */
454 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS);
455
456 if (cmdr & AT91_MCI_TRCMD_START) {
457 data->bytes_xfered = 0;
458 host->transfer_index = 0;
459 host->in_use_index = 0;
460 if (cmdr & AT91_MCI_TRDIR) {
461 /*
462 * Handle a read
463 */
464 host->buffer = NULL;
465 host->total_length = 0;
466
467 at91mci_pre_dma_read(host);
468 ier = AT91_MCI_ENDRX /* | AT91_MCI_RXBUFF */;
469 }
470 else {
471 /*
472 * Handle a write
473 */
474 host->total_length = block_length * blocks;
475 host->buffer = dma_alloc_coherent(NULL,
476 host->total_length,
477 &host->physical_address, GFP_KERNEL);
478
479 at91mci_sg_to_dma(host, data);
480
481 pr_debug("Transmitting %d bytes\n", host->total_length);
482 482
483 at91_mci_write(host, ATMEL_PDC_TPR, host->physical_address); 483 if (cmdr & AT91_MCI_TRCMD_START) {
484 at91_mci_write(host, ATMEL_PDC_TCR, host->total_length / 4); 484 data->bytes_xfered = 0;
485 ier = AT91_MCI_TXBUFE; 485 host->transfer_index = 0;
486 host->in_use_index = 0;
487 if (cmdr & AT91_MCI_TRDIR) {
488 /*
489 * Handle a read
490 */
491 host->buffer = NULL;
492 host->total_length = 0;
493
494 at91_mci_pre_dma_read(host);
495 ier = AT91_MCI_ENDRX /* | AT91_MCI_RXBUFF */;
496 }
497 else {
498 /*
499 * Handle a write
500 */
501 host->total_length = block_length * blocks;
502 host->buffer = dma_alloc_coherent(NULL,
503 host->total_length,
504 &host->physical_address, GFP_KERNEL);
505
506 at91_mci_sg_to_dma(host, data);
507
508 pr_debug("Transmitting %d bytes\n", host->total_length);
509
510 at91_mci_write(host, ATMEL_PDC_TPR, host->physical_address);
511 at91_mci_write(host, ATMEL_PDC_TCR, host->total_length / 4);
512 ier = AT91_MCI_CMDRDY;
513 }
486 } 514 }
487 } 515 }
488 516
@@ -497,39 +525,24 @@ static unsigned int at91_mci_send_command(struct at91mci_host *host, struct mmc_
497 if (cmdr & AT91_MCI_TRCMD_START) { 525 if (cmdr & AT91_MCI_TRCMD_START) {
498 if (cmdr & AT91_MCI_TRDIR) 526 if (cmdr & AT91_MCI_TRDIR)
499 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN); 527 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTEN);
500 else
501 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN);
502 } 528 }
503 return ier;
504}
505
506/*
507 * Wait for a command to complete
508 */
509static void at91mci_process_command(struct at91mci_host *host, struct mmc_command *cmd)
510{
511 unsigned int ier;
512
513 ier = at91_mci_send_command(host, cmd);
514
515 pr_debug("setting ier to %08X\n", ier);
516 529
517 /* Stop on errors or the required value */ 530 /* Enable selected interrupts */
518 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_ERRORS | ier); 531 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_ERRORS | ier);
519} 532}
520 533
521/* 534/*
522 * Process the next step in the request 535 * Process the next step in the request
523 */ 536 */
524static void at91mci_process_next(struct at91mci_host *host) 537static void at91_mci_process_next(struct at91mci_host *host)
525{ 538{
526 if (!(host->flags & FL_SENT_COMMAND)) { 539 if (!(host->flags & FL_SENT_COMMAND)) {
527 host->flags |= FL_SENT_COMMAND; 540 host->flags |= FL_SENT_COMMAND;
528 at91mci_process_command(host, host->request->cmd); 541 at91_mci_send_command(host, host->request->cmd);
529 } 542 }
530 else if ((!(host->flags & FL_SENT_STOP)) && host->request->stop) { 543 else if ((!(host->flags & FL_SENT_STOP)) && host->request->stop) {
531 host->flags |= FL_SENT_STOP; 544 host->flags |= FL_SENT_STOP;
532 at91mci_process_command(host, host->request->stop); 545 at91_mci_send_command(host, host->request->stop);
533 } 546 }
534 else 547 else
535 mmc_request_done(host->mmc, host->request); 548 mmc_request_done(host->mmc, host->request);
@@ -538,7 +551,7 @@ static void at91mci_process_next(struct at91mci_host *host)
538/* 551/*
539 * Handle a command that has been completed 552 * Handle a command that has been completed
540 */ 553 */
541static void at91mci_completed_command(struct at91mci_host *host) 554static void at91_mci_completed_command(struct at91mci_host *host)
542{ 555{
543 struct mmc_command *cmd = host->cmd; 556 struct mmc_command *cmd = host->cmd;
544 unsigned int status; 557 unsigned int status;
@@ -583,7 +596,7 @@ static void at91mci_completed_command(struct at91mci_host *host)
583 else 596 else
584 cmd->error = MMC_ERR_NONE; 597 cmd->error = MMC_ERR_NONE;
585 598
586 at91mci_process_next(host); 599 at91_mci_process_next(host);
587} 600}
588 601
589/* 602/*
@@ -595,7 +608,7 @@ static void at91_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
595 host->request = mrq; 608 host->request = mrq;
596 host->flags = 0; 609 host->flags = 0;
597 610
598 at91mci_process_next(host); 611 at91_mci_process_next(host);
599} 612}
600 613
601/* 614/*
@@ -698,29 +711,33 @@ static irqreturn_t at91_mci_irq(int irq, void *devid)
698 at91_mci_handle_transmitted(host); 711 at91_mci_handle_transmitted(host);
699 } 712 }
700 713
714 if (int_status & AT91_MCI_ENDRX) {
715 pr_debug("ENDRX\n");
716 at91_mci_post_dma_read(host);
717 }
718
701 if (int_status & AT91_MCI_RXBUFF) { 719 if (int_status & AT91_MCI_RXBUFF) {
702 pr_debug("RX buffer full\n"); 720 pr_debug("RX buffer full\n");
703 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_CMDRDY); 721 at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_RXTDIS | ATMEL_PDC_TXTDIS);
722 at91_mci_write(host, AT91_MCI_IDR, AT91_MCI_RXBUFF | AT91_MCI_ENDRX);
723 completed = 1;
704 } 724 }
705 725
706 if (int_status & AT91_MCI_ENDTX) 726 if (int_status & AT91_MCI_ENDTX)
707 pr_debug("Transmit has ended\n"); 727 pr_debug("Transmit has ended\n");
708 728
709 if (int_status & AT91_MCI_ENDRX) {
710 pr_debug("Receive has ended\n");
711 at91mci_post_dma_read(host);
712 }
713
714 if (int_status & AT91_MCI_NOTBUSY) { 729 if (int_status & AT91_MCI_NOTBUSY) {
715 pr_debug("Card is ready\n"); 730 pr_debug("Card is ready\n");
716 at91_mci_write(host, AT91_MCI_IER, AT91_MCI_CMDRDY); 731 completed = 1;
717 } 732 }
718 733
719 if (int_status & AT91_MCI_DTIP) 734 if (int_status & AT91_MCI_DTIP)
720 pr_debug("Data transfer in progress\n"); 735 pr_debug("Data transfer in progress\n");
721 736
722 if (int_status & AT91_MCI_BLKE) 737 if (int_status & AT91_MCI_BLKE) {
723 pr_debug("Block transfer has ended\n"); 738 pr_debug("Block transfer has ended\n");
739 completed = 1;
740 }
724 741
725 if (int_status & AT91_MCI_TXRDY) 742 if (int_status & AT91_MCI_TXRDY)
726 pr_debug("Ready to transmit\n"); 743 pr_debug("Ready to transmit\n");
@@ -730,14 +747,14 @@ static irqreturn_t at91_mci_irq(int irq, void *devid)
730 747
731 if (int_status & AT91_MCI_CMDRDY) { 748 if (int_status & AT91_MCI_CMDRDY) {
732 pr_debug("Command ready\n"); 749 pr_debug("Command ready\n");
733 completed = 1; 750 completed = at91_mci_handle_cmdrdy(host);
734 } 751 }
735 } 752 }
736 753
737 if (completed) { 754 if (completed) {
738 pr_debug("Completed command\n"); 755 pr_debug("Completed command\n");
739 at91_mci_write(host, AT91_MCI_IDR, 0xffffffff); 756 at91_mci_write(host, AT91_MCI_IDR, 0xffffffff);
740 at91mci_completed_command(host); 757 at91_mci_completed_command(host);
741 } else 758 } else
742 at91_mci_write(host, AT91_MCI_IDR, int_status); 759 at91_mci_write(host, AT91_MCI_IDR, int_status);
743 760
@@ -830,11 +847,11 @@ static int __init at91_mci_probe(struct platform_device *pdev)
830 host->bus_mode = 0; 847 host->bus_mode = 0;
831 host->board = pdev->dev.platform_data; 848 host->board = pdev->dev.platform_data;
832 if (host->board->wire4) { 849 if (host->board->wire4) {
833#ifdef SUPPORT_4WIRE 850 if (cpu_is_at91sam9260() || cpu_is_at91sam9263())
834 mmc->caps |= MMC_CAP_4_BIT_DATA; 851 mmc->caps |= MMC_CAP_4_BIT_DATA;
835#else 852 else
836 printk("AT91 MMC: 4 wire bus mode not supported by this driver - using 1 wire\n"); 853 printk("AT91 MMC: 4 wire bus mode not supported"
837#endif 854 " - using 1 wire\n");
838 } 855 }
839 856
840 /* 857 /*
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index a359efdd77eb..10d15c39d003 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -70,6 +70,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
70 .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE, 70 .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE,
71 }, 71 },
72 72
73 {
74 .vendor = PCI_VENDOR_ID_ENE,
75 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
76 .subvendor = PCI_ANY_ID,
77 .subdevice = PCI_ANY_ID,
78 .driver_data = SDHCI_QUIRK_SINGLE_POWER_WRITE,
79 },
80
73 { /* Generic SD host controller */ 81 { /* Generic SD host controller */
74 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) 82 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
75 }, 83 },
@@ -1022,7 +1030,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
1022 writel(SDHCI_INT_BUS_POWER, host->ioaddr + SDHCI_INT_STATUS); 1030 writel(SDHCI_INT_BUS_POWER, host->ioaddr + SDHCI_INT_STATUS);
1023 } 1031 }
1024 1032
1025 intmask &= SDHCI_INT_BUS_POWER; 1033 intmask &= ~SDHCI_INT_BUS_POWER;
1026 1034
1027 if (intmask) { 1035 if (intmask) {
1028 printk(KERN_ERR "%s: Unexpected interrupt 0x%08x.\n", 1036 printk(KERN_ERR "%s: Unexpected interrupt 0x%08x.\n",
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 04:45:15 -0500