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8#include <config.h>
9#include <common.h>
10#include <api_public.h>
11#include <part.h>
12
13#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
14#include <usb.h>
15#endif
16
17#define DEBUG
18#undef DEBUG
19
20#ifdef DEBUG
21#define debugf(fmt, args...) do { printf("%s(): ", __func__); printf(fmt, ##args); } while (0)
22#else
23#define debugf(fmt, args...)
24#endif
25
26#define errf(fmt, args...) do { printf("ERROR @ %s(): ", __func__); printf(fmt, ##args); } while (0)
27
28
29#define ENUM_IDE 0
30#define ENUM_USB 1
31#define ENUM_SCSI 2
32#define ENUM_MMC 3
33#define ENUM_SATA 4
34#define ENUM_MAX 5
35
36struct stor_spec {
37 int max_dev;
38 int enum_started;
39 int enum_ended;
40 int type;
41 char *name;
42};
43
44static struct stor_spec specs[ENUM_MAX] = { { 0, 0, 0, 0, NULL }, };
45
46#ifndef CONFIG_SYS_MMC_MAX_DEVICE
47#define CONFIG_SYS_MMC_MAX_DEVICE 1
48#endif
49
50void dev_stor_init(void)
51{
52#if defined(CONFIG_IDE)
53 specs[ENUM_IDE].max_dev = CONFIG_SYS_IDE_MAXDEVICE;
54 specs[ENUM_IDE].enum_started = 0;
55 specs[ENUM_IDE].enum_ended = 0;
56 specs[ENUM_IDE].type = DEV_TYP_STOR | DT_STOR_IDE;
57 specs[ENUM_IDE].name = "ide";
58#endif
59#if defined(CONFIG_CMD_MMC)
60 specs[ENUM_MMC].max_dev = CONFIG_SYS_MMC_MAX_DEVICE;
61 specs[ENUM_MMC].enum_started = 0;
62 specs[ENUM_MMC].enum_ended = 0;
63 specs[ENUM_MMC].type = DEV_TYP_STOR | DT_STOR_MMC;
64 specs[ENUM_MMC].name = "mmc";
65#endif
66#if defined(CONFIG_SATA)
67 specs[ENUM_SATA].max_dev = CONFIG_SYS_SATA_MAX_DEVICE;
68 specs[ENUM_SATA].enum_started = 0;
69 specs[ENUM_SATA].enum_ended = 0;
70 specs[ENUM_SATA].type = DEV_TYP_STOR | DT_STOR_SATA;
71 specs[ENUM_SATA].name = "sata";
72#endif
73#if defined(CONFIG_SCSI)
74 specs[ENUM_SCSI].max_dev = CONFIG_SYS_SCSI_MAX_DEVICE;
75 specs[ENUM_SCSI].enum_started = 0;
76 specs[ENUM_SCSI].enum_ended = 0;
77 specs[ENUM_SCSI].type = DEV_TYP_STOR | DT_STOR_SCSI;
78 specs[ENUM_SCSI].name = "scsi";
79#endif
80#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE)
81 specs[ENUM_USB].max_dev = USB_MAX_STOR_DEV;
82 specs[ENUM_USB].enum_started = 0;
83 specs[ENUM_USB].enum_ended = 0;
84 specs[ENUM_USB].type = DEV_TYP_STOR | DT_STOR_USB;
85 specs[ENUM_USB].name = "usb";
86#endif
87}
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98
99static int dev_stor_get(int type, int *more, struct device_info *di)
100{
101 struct blk_desc *dd;
102 int found = 0;
103 int found_last = 0;
104 int i = 0;
105
106
107 if (specs[type].name == NULL)
108 return 0;
109
110 if (di->cookie != NULL) {
111
112 for (i = 0; i < specs[type].max_dev; i++) {
113 if (di->cookie ==
114 (void *)blk_get_dev(specs[type].name, i)) {
115 i += 1;
116 found_last = 1;
117 break;
118 }
119 }
120
121 if (!found_last)
122 i = 0;
123 }
124
125 for (; i < specs[type].max_dev; i++) {
126 di->cookie = (void *)blk_get_dev(specs[type].name, i);
127
128 if (di->cookie != NULL) {
129 found = 1;
130 break;
131 }
132 }
133
134 if (i == specs[type].max_dev)
135 *more = 0;
136 else
137 *more = 1;
138
139 if (found) {
140 di->type = specs[type].type;
141
142 dd = (struct blk_desc *)di->cookie;
143 if (dd->type == DEV_TYPE_UNKNOWN) {
144 debugf("device instance exists, but is not active..");
145 found = 0;
146 } else {
147 di->di_stor.block_count = dd->lba;
148 di->di_stor.block_size = dd->blksz;
149 }
150 } else {
151 di->cookie = NULL;
152 }
153
154 return found;
155}
156
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159
160static int dev_stor_type(struct blk_desc *dd)
161{
162 int i, j;
163
164 for (i = ENUM_IDE; i < ENUM_MAX; i++)
165 for (j = 0; j < specs[i].max_dev; j++)
166 if (dd == blk_get_dev(specs[i].name, j))
167 return i;
168
169 return ENUM_MAX;
170}
171
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174
175static int dev_is_stor(int type, struct device_info *di)
176{
177 return (dev_stor_type(di->cookie) == type) ? 1 : 0;
178}
179
180
181static int dev_enum_stor(int type, struct device_info *di)
182{
183 int found = 0, more = 0;
184
185 debugf("called, type %d\n", type);
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202
203
204 if (di->cookie == NULL) {
205 debugf("group%d - enum restart\n", type);
206
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210
211 found = dev_stor_get(type, &more, di);
212 specs[type].enum_started = 1;
213
214 } else if (dev_is_stor(type, di)) {
215 debugf("group%d - enum continued for the next device\n", type);
216
217 if (specs[type].enum_ended) {
218 debugf("group%d - nothing more to enum!\n", type);
219 return 0;
220 }
221
222
223 found = dev_stor_get(type, &more, di);
224
225 } else {
226 if (specs[type].enum_ended) {
227 debugf("group %d - already enumerated, skipping\n", type);
228 return 0;
229 }
230
231 debugf("group%d - first time enum\n", type);
232
233 if (specs[type].enum_started == 0) {
234
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241 specs[type].enum_started = 1;
242
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245
246
247 found = dev_stor_get(type, &more, di);
248
249 } else {
250 errf("group%d - out of order iteration\n", type);
251 found = 0;
252 more = 0;
253 }
254 }
255
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259
260 specs[type].enum_ended = (!more) ? 1 : 0;
261
262 if (found)
263 debugf("device found, returning cookie 0x%08x\n",
264 (u_int32_t)di->cookie);
265 else
266 debugf("no device found\n");
267
268 return found;
269}
270
271void dev_enum_reset(void)
272{
273 int i;
274
275 for (i = 0; i < ENUM_MAX; i ++) {
276 specs[i].enum_started = 0;
277 specs[i].enum_ended = 0;
278 }
279}
280
281int dev_enum_storage(struct device_info *di)
282{
283 int i;
284
285
286 for (i = ENUM_IDE; i < ENUM_MAX; i ++) {
287 if (dev_enum_stor(i, di))
288 return 1;
289 }
290
291 return 0;
292}
293
294static int dev_stor_is_valid(int type, struct blk_desc *dd)
295{
296 int i;
297
298 for (i = 0; i < specs[type].max_dev; i++)
299 if (dd == blk_get_dev(specs[type].name, i))
300 if (dd->type != DEV_TYPE_UNKNOWN)
301 return 1;
302
303 return 0;
304}
305
306
307int dev_open_stor(void *cookie)
308{
309 int type = dev_stor_type(cookie);
310
311 if (type == ENUM_MAX)
312 return API_ENODEV;
313
314 if (dev_stor_is_valid(type, (struct blk_desc *)cookie))
315 return 0;
316
317 return API_ENODEV;
318}
319
320
321int dev_close_stor(void *cookie)
322{
323
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325
326
327 return 0;
328}
329
330
331lbasize_t dev_read_stor(void *cookie, void *buf, lbasize_t len, lbastart_t start)
332{
333 int type;
334 struct blk_desc *dd = (struct blk_desc *)cookie;
335
336 if ((type = dev_stor_type(dd)) == ENUM_MAX)
337 return 0;
338
339 if (!dev_stor_is_valid(type, dd))
340 return 0;
341
342#ifdef CONFIG_BLK
343 return blk_dread(dd, start, len, buf);
344#else
345 if ((dd->block_read) == NULL) {
346 debugf("no block_read() for device 0x%08x\n", cookie);
347 return 0;
348 }
349
350 return dd->block_read(dd, start, len, buf);
351#endif
352}
353
354
355lbasize_t dev_write_stor(void *cookie, void *buf, lbasize_t len, lbastart_t start)
356{
357 struct blk_desc *dd = (struct blk_desc *)cookie;
358 int type = dev_stor_type(dd);
359
360 if (type == ENUM_MAX)
361 return 0;
362
363 if (!dev_stor_is_valid(type, dd))
364 return 0;
365
366#ifdef CONFIG_BLK
367 return blk_dwrite(dd, start, len, buf);
368#else
369 if (dd->block_write == NULL) {
370 debugf("no block_write() for device 0x%08x\n", cookie);
371 return 0;
372 }
373
374 return dd->block_write(dd, start, len, buf);
375#endif
376}
377