root / hw / sd.c @ 87ecb68b
History | View | Annotate | Download (40.9 kB)
1 |
/*
|
---|---|
2 |
* SD Memory Card emulation as defined in the "SD Memory Card Physical
|
3 |
* layer specification, Version 1.10."
|
4 |
*
|
5 |
* Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
|
6 |
* Copyright (c) 2007 CodeSourcery
|
7 |
*
|
8 |
* Redistribution and use in source and binary forms, with or without
|
9 |
* modification, are permitted provided that the following conditions
|
10 |
* are met:
|
11 |
*
|
12 |
* 1. Redistributions of source code must retain the above copyright
|
13 |
* notice, this list of conditions and the following disclaimer.
|
14 |
* 2. Redistributions in binary form must reproduce the above copyright
|
15 |
* notice, this list of conditions and the following disclaimer in
|
16 |
* the documentation and/or other materials provided with the
|
17 |
* distribution.
|
18 |
*
|
19 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
|
20 |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
21 |
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
22 |
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
|
23 |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
24 |
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
25 |
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
26 |
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
27 |
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
28 |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
29 |
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
30 |
*/
|
31 |
|
32 |
#include "hw.h" |
33 |
#include "block.h" |
34 |
#include "sd.h" |
35 |
|
36 |
//#define DEBUG_SD 1
|
37 |
|
38 |
#ifdef DEBUG_SD
|
39 |
#define DPRINTF(fmt, args...) \
|
40 |
do { printf("SD: " fmt , ##args); } while (0) |
41 |
#else
|
42 |
#define DPRINTF(fmt, args...) do {} while(0) |
43 |
#endif
|
44 |
|
45 |
typedef enum { |
46 |
sd_r0 = 0, /* no response */ |
47 |
sd_r1, /* normal response command */
|
48 |
sd_r2_i, /* CID register */
|
49 |
sd_r2_s, /* CSD register */
|
50 |
sd_r3, /* OCR register */
|
51 |
sd_r6 = 6, /* Published RCA response */ |
52 |
sd_r1b = -1,
|
53 |
} sd_rsp_type_t; |
54 |
|
55 |
struct SDState {
|
56 |
enum {
|
57 |
sd_inactive, |
58 |
sd_card_identification_mode, |
59 |
sd_data_transfer_mode, |
60 |
} mode; |
61 |
enum {
|
62 |
sd_inactive_state = -1,
|
63 |
sd_idle_state = 0,
|
64 |
sd_ready_state, |
65 |
sd_identification_state, |
66 |
sd_standby_state, |
67 |
sd_transfer_state, |
68 |
sd_sendingdata_state, |
69 |
sd_receivingdata_state, |
70 |
sd_programming_state, |
71 |
sd_disconnect_state, |
72 |
} state; |
73 |
uint32_t ocr; |
74 |
uint8_t scr[8];
|
75 |
uint8_t cid[16];
|
76 |
uint8_t csd[16];
|
77 |
uint16_t rca; |
78 |
uint32_t card_status; |
79 |
uint8_t sd_status[64];
|
80 |
int wp_switch;
|
81 |
int *wp_groups;
|
82 |
uint32_t size; |
83 |
int blk_len;
|
84 |
uint32_t erase_start; |
85 |
uint32_t erase_end; |
86 |
uint8_t pwd[16];
|
87 |
int pwd_len;
|
88 |
int function_group[6]; |
89 |
|
90 |
int current_cmd;
|
91 |
int blk_written;
|
92 |
uint32_t data_start; |
93 |
uint32_t data_offset; |
94 |
uint8_t data[512];
|
95 |
qemu_irq readonly_cb; |
96 |
qemu_irq inserted_cb; |
97 |
BlockDriverState *bdrv; |
98 |
}; |
99 |
|
100 |
static void sd_set_status(SDState *sd) |
101 |
{ |
102 |
switch (sd->state) {
|
103 |
case sd_inactive_state:
|
104 |
sd->mode = sd_inactive; |
105 |
break;
|
106 |
|
107 |
case sd_idle_state:
|
108 |
case sd_ready_state:
|
109 |
case sd_identification_state:
|
110 |
sd->mode = sd_card_identification_mode; |
111 |
break;
|
112 |
|
113 |
case sd_standby_state:
|
114 |
case sd_transfer_state:
|
115 |
case sd_sendingdata_state:
|
116 |
case sd_receivingdata_state:
|
117 |
case sd_programming_state:
|
118 |
case sd_disconnect_state:
|
119 |
sd->mode = sd_data_transfer_mode; |
120 |
break;
|
121 |
} |
122 |
|
123 |
sd->card_status &= ~CURRENT_STATE; |
124 |
sd->card_status |= sd->state << 9;
|
125 |
} |
126 |
|
127 |
const sd_cmd_type_t sd_cmd_type[64] = { |
128 |
sd_bc, sd_none, sd_bcr, sd_bcr, sd_none, sd_none, sd_none, sd_ac, |
129 |
sd_none, sd_ac, sd_ac, sd_adtc, sd_ac, sd_ac, sd_none, sd_ac, |
130 |
sd_ac, sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, |
131 |
sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac, sd_ac, sd_adtc, sd_none, |
132 |
sd_ac, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, |
133 |
sd_none, sd_none, sd_bc, sd_none, sd_none, sd_none, sd_none, sd_none, |
134 |
sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, |
135 |
sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
136 |
}; |
137 |
|
138 |
const sd_cmd_type_t sd_acmd_type[64] = { |
139 |
sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, |
140 |
sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, |
141 |
sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_ac, |
142 |
sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
143 |
sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
144 |
sd_none, sd_bcr, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_none, |
145 |
sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, sd_none, sd_none, |
146 |
sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
147 |
}; |
148 |
|
149 |
static const int sd_cmd_class[64] = { |
150 |
0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 1, 0, 0, 0, 0, |
151 |
2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 6, 6, |
152 |
5, 5, 10, 10, 10, 10, 5, 9, 9, 9, 7, 7, 7, 7, 7, 7, |
153 |
7, 7, 10, 7, 9, 9, 9, 8, 8, 10, 8, 8, 8, 8, 8, 8, |
154 |
}; |
155 |
|
156 |
static uint8_t sd_crc7(void *message, size_t width) |
157 |
{ |
158 |
int i, bit;
|
159 |
uint8_t shift_reg = 0x00;
|
160 |
uint8_t *msg = (uint8_t *) message; |
161 |
|
162 |
for (i = 0; i < width; i ++, msg ++) |
163 |
for (bit = 7; bit >= 0; bit --) { |
164 |
shift_reg <<= 1;
|
165 |
if ((shift_reg >> 7) ^ ((*msg >> bit) & 1)) |
166 |
shift_reg ^= 0x89;
|
167 |
} |
168 |
|
169 |
return shift_reg;
|
170 |
} |
171 |
|
172 |
static uint16_t sd_crc16(void *message, size_t width) |
173 |
{ |
174 |
int i, bit;
|
175 |
uint16_t shift_reg = 0x0000;
|
176 |
uint16_t *msg = (uint16_t *) message; |
177 |
width <<= 1;
|
178 |
|
179 |
for (i = 0; i < width; i ++, msg ++) |
180 |
for (bit = 15; bit >= 0; bit --) { |
181 |
shift_reg <<= 1;
|
182 |
if ((shift_reg >> 15) ^ ((*msg >> bit) & 1)) |
183 |
shift_reg ^= 0x1011;
|
184 |
} |
185 |
|
186 |
return shift_reg;
|
187 |
} |
188 |
|
189 |
static void sd_set_ocr(SDState *sd) |
190 |
{ |
191 |
sd->ocr = 0x80fffff0;
|
192 |
} |
193 |
|
194 |
static void sd_set_scr(SDState *sd) |
195 |
{ |
196 |
sd->scr[0] = 0x00; /* SCR Structure */ |
197 |
sd->scr[1] = 0x2f; /* SD Security Support */ |
198 |
sd->scr[2] = 0x00; |
199 |
sd->scr[3] = 0x00; |
200 |
sd->scr[4] = 0x00; |
201 |
sd->scr[5] = 0x00; |
202 |
sd->scr[6] = 0x00; |
203 |
sd->scr[7] = 0x00; |
204 |
} |
205 |
|
206 |
#define MID 0xaa |
207 |
#define OID "XY" |
208 |
#define PNM "QEMU!" |
209 |
#define PRV 0x01 |
210 |
#define MDT_YR 2006 |
211 |
#define MDT_MON 2 |
212 |
|
213 |
static void sd_set_cid(SDState *sd) |
214 |
{ |
215 |
sd->cid[0] = MID; /* Fake card manufacturer ID (MID) */ |
216 |
sd->cid[1] = OID[0]; /* OEM/Application ID (OID) */ |
217 |
sd->cid[2] = OID[1]; |
218 |
sd->cid[3] = PNM[0]; /* Fake product name (PNM) */ |
219 |
sd->cid[4] = PNM[1]; |
220 |
sd->cid[5] = PNM[2]; |
221 |
sd->cid[6] = PNM[3]; |
222 |
sd->cid[7] = PNM[4]; |
223 |
sd->cid[8] = PRV; /* Fake product revision (PRV) */ |
224 |
sd->cid[9] = 0xde; /* Fake serial number (PSN) */ |
225 |
sd->cid[10] = 0xad; |
226 |
sd->cid[11] = 0xbe; |
227 |
sd->cid[12] = 0xef; |
228 |
sd->cid[13] = 0x00 | /* Manufacture date (MDT) */ |
229 |
((MDT_YR - 2000) / 10); |
230 |
sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON; |
231 |
sd->cid[15] = (sd_crc7(sd->cid, 15) << 1) | 1; |
232 |
} |
233 |
|
234 |
#define HWBLOCK_SHIFT 9 /* 512 bytes */ |
235 |
#define SECTOR_SHIFT 5 /* 16 kilobytes */ |
236 |
#define WPGROUP_SHIFT 7 /* 2 megs */ |
237 |
#define CMULT_SHIFT 9 /* 512 times HWBLOCK_SIZE */ |
238 |
#define BLOCK_SIZE (1 << (HWBLOCK_SHIFT)) |
239 |
#define SECTOR_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT)) |
240 |
#define WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) |
241 |
|
242 |
static const uint8_t sd_csd_rw_mask[16] = { |
243 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
244 |
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe, |
245 |
}; |
246 |
|
247 |
static void sd_set_csd(SDState *sd, uint32_t size) |
248 |
{ |
249 |
uint32_t csize = (size >> (CMULT_SHIFT + HWBLOCK_SHIFT)) - 1;
|
250 |
uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1; |
251 |
uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1; |
252 |
|
253 |
sd->csd[0] = 0x00; /* CSD structure */ |
254 |
sd->csd[1] = 0x26; /* Data read access-time-1 */ |
255 |
sd->csd[2] = 0x00; /* Data read access-time-2 */ |
256 |
sd->csd[3] = 0x5a; /* Max. data transfer rate */ |
257 |
sd->csd[4] = 0x5f; /* Card Command Classes */ |
258 |
sd->csd[5] = 0x50 | /* Max. read data block length */ |
259 |
HWBLOCK_SHIFT; |
260 |
sd->csd[6] = 0xe0 | /* Partial block for read allowed */ |
261 |
((csize >> 10) & 0x03); |
262 |
sd->csd[7] = 0x00 | /* Device size */ |
263 |
((csize >> 2) & 0xff); |
264 |
sd->csd[8] = 0x3f | /* Max. read current */ |
265 |
((csize << 6) & 0xc0); |
266 |
sd->csd[9] = 0xfc | /* Max. write current */ |
267 |
((CMULT_SHIFT - 2) >> 1); |
268 |
sd->csd[10] = 0x40 | /* Erase sector size */ |
269 |
(((CMULT_SHIFT - 2) << 7) & 0x80) | (sectsize >> 1); |
270 |
sd->csd[11] = 0x00 | /* Write protect group size */ |
271 |
((sectsize << 7) & 0x80) | wpsize; |
272 |
sd->csd[12] = 0x90 | /* Write speed factor */ |
273 |
(HWBLOCK_SHIFT >> 2);
|
274 |
sd->csd[13] = 0x20 | /* Max. write data block length */ |
275 |
((HWBLOCK_SHIFT << 6) & 0xc0); |
276 |
sd->csd[14] = 0x00; /* File format group */ |
277 |
sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1; |
278 |
} |
279 |
|
280 |
static void sd_set_rca(SDState *sd) |
281 |
{ |
282 |
sd->rca += 0x4567;
|
283 |
} |
284 |
|
285 |
#define CARD_STATUS_A 0x02004100 |
286 |
#define CARD_STATUS_B 0x00c01e00 |
287 |
#define CARD_STATUS_C 0xfd39a028 |
288 |
|
289 |
static void sd_set_cardstatus(SDState *sd) |
290 |
{ |
291 |
sd->card_status = 0x00000100;
|
292 |
} |
293 |
|
294 |
static void sd_set_sdstatus(SDState *sd) |
295 |
{ |
296 |
memset(sd->sd_status, 0, 64); |
297 |
} |
298 |
|
299 |
static int sd_req_crc_validate(struct sd_request_s *req) |
300 |
{ |
301 |
uint8_t buffer[5];
|
302 |
buffer[0] = 0x40 | req->cmd; |
303 |
buffer[1] = (req->arg >> 24) & 0xff; |
304 |
buffer[2] = (req->arg >> 16) & 0xff; |
305 |
buffer[3] = (req->arg >> 8) & 0xff; |
306 |
buffer[4] = (req->arg >> 0) & 0xff; |
307 |
return 0; |
308 |
return sd_crc7(buffer, 5) != req->crc; /* TODO */ |
309 |
} |
310 |
|
311 |
void sd_response_r1_make(SDState *sd,
|
312 |
uint8_t *response, uint32_t last_status) |
313 |
{ |
314 |
uint32_t mask = CARD_STATUS_B ^ ILLEGAL_COMMAND; |
315 |
uint32_t status; |
316 |
|
317 |
status = (sd->card_status & ~mask) | (last_status & mask); |
318 |
sd->card_status &= ~CARD_STATUS_C | APP_CMD; |
319 |
|
320 |
response[0] = (status >> 24) & 0xff; |
321 |
response[1] = (status >> 16) & 0xff; |
322 |
response[2] = (status >> 8) & 0xff; |
323 |
response[3] = (status >> 0) & 0xff; |
324 |
} |
325 |
|
326 |
void sd_response_r3_make(SDState *sd, uint8_t *response)
|
327 |
{ |
328 |
response[0] = (sd->ocr >> 24) & 0xff; |
329 |
response[1] = (sd->ocr >> 16) & 0xff; |
330 |
response[2] = (sd->ocr >> 8) & 0xff; |
331 |
response[3] = (sd->ocr >> 0) & 0xff; |
332 |
} |
333 |
|
334 |
void sd_response_r6_make(SDState *sd, uint8_t *response)
|
335 |
{ |
336 |
uint16_t arg; |
337 |
uint16_t status; |
338 |
|
339 |
arg = sd->rca; |
340 |
status = ((sd->card_status >> 8) & 0xc000) | |
341 |
((sd->card_status >> 6) & 0x2000) | |
342 |
(sd->card_status & 0x1fff);
|
343 |
|
344 |
response[0] = (arg >> 8) & 0xff; |
345 |
response[1] = arg & 0xff; |
346 |
response[2] = (status >> 8) & 0xff; |
347 |
response[3] = status & 0xff; |
348 |
} |
349 |
|
350 |
static void sd_reset(SDState *sd, BlockDriverState *bdrv) |
351 |
{ |
352 |
uint32_t size; |
353 |
uint64_t sect; |
354 |
|
355 |
bdrv_get_geometry(bdrv, §); |
356 |
sect <<= 9;
|
357 |
|
358 |
if (sect > 0x40000000) |
359 |
size = 0x40000000; /* 1 gig */ |
360 |
else
|
361 |
size = sect + 1;
|
362 |
|
363 |
sect = (size >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) + 1;
|
364 |
|
365 |
sd->state = sd_idle_state; |
366 |
sd->rca = 0x0000;
|
367 |
sd_set_ocr(sd); |
368 |
sd_set_scr(sd); |
369 |
sd_set_cid(sd); |
370 |
sd_set_csd(sd, size); |
371 |
sd_set_cardstatus(sd); |
372 |
sd_set_sdstatus(sd); |
373 |
|
374 |
sd->bdrv = bdrv; |
375 |
|
376 |
if (sd->wp_groups)
|
377 |
qemu_free(sd->wp_groups); |
378 |
sd->wp_switch = bdrv_is_read_only(bdrv); |
379 |
sd->wp_groups = (int *) qemu_mallocz(sizeof(int) * sect); |
380 |
memset(sd->wp_groups, 0, sizeof(int) * sect); |
381 |
memset(sd->function_group, 0, sizeof(int) * 6); |
382 |
sd->erase_start = 0;
|
383 |
sd->erase_end = 0;
|
384 |
sd->size = size; |
385 |
sd->blk_len = 0x200;
|
386 |
sd->pwd_len = 0;
|
387 |
} |
388 |
|
389 |
static void sd_cardchange(void *opaque) |
390 |
{ |
391 |
SDState *sd = opaque; |
392 |
qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv)); |
393 |
if (bdrv_is_inserted(sd->bdrv)) {
|
394 |
sd_reset(sd, sd->bdrv); |
395 |
qemu_set_irq(sd->readonly_cb, sd->wp_switch); |
396 |
} |
397 |
} |
398 |
|
399 |
SDState *sd_init(BlockDriverState *bs) |
400 |
{ |
401 |
SDState *sd; |
402 |
|
403 |
sd = (SDState *) qemu_mallocz(sizeof(SDState));
|
404 |
sd_reset(sd, bs); |
405 |
bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd); |
406 |
return sd;
|
407 |
} |
408 |
|
409 |
void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
|
410 |
{ |
411 |
sd->readonly_cb = readonly; |
412 |
sd->inserted_cb = insert; |
413 |
qemu_set_irq(readonly, bdrv_is_read_only(sd->bdrv)); |
414 |
qemu_set_irq(insert, bdrv_is_inserted(sd->bdrv)); |
415 |
} |
416 |
|
417 |
static void sd_erase(SDState *sd) |
418 |
{ |
419 |
int i, start, end;
|
420 |
if (!sd->erase_start || !sd->erase_end) {
|
421 |
sd->card_status |= ERASE_SEQ_ERROR; |
422 |
return;
|
423 |
} |
424 |
|
425 |
start = sd->erase_start >> |
426 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
427 |
end = sd->erase_end >> |
428 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
429 |
sd->erase_start = 0;
|
430 |
sd->erase_end = 0;
|
431 |
sd->csd[14] |= 0x40; |
432 |
|
433 |
for (i = start; i <= end; i ++)
|
434 |
if (sd->wp_groups[i])
|
435 |
sd->card_status |= WP_ERASE_SKIP; |
436 |
} |
437 |
|
438 |
static uint32_t sd_wpbits(SDState *sd, uint32_t addr)
|
439 |
{ |
440 |
uint32_t i, wpnum; |
441 |
uint32_t ret = 0;
|
442 |
|
443 |
wpnum = addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
444 |
|
445 |
for (i = 0; i < 32; i ++, wpnum ++, addr += WPGROUP_SIZE) |
446 |
if (addr < sd->size && sd->wp_groups[wpnum])
|
447 |
ret |= (1 << i);
|
448 |
|
449 |
return ret;
|
450 |
} |
451 |
|
452 |
static void sd_function_switch(SDState *sd, uint32_t arg) |
453 |
{ |
454 |
int i, mode, new_func, crc;
|
455 |
mode = !!(arg & 0x80000000);
|
456 |
|
457 |
sd->data[0] = 0x00; /* Maximum current consumption */ |
458 |
sd->data[1] = 0x01; |
459 |
sd->data[2] = 0x80; /* Supported group 6 functions */ |
460 |
sd->data[3] = 0x01; |
461 |
sd->data[4] = 0x80; /* Supported group 5 functions */ |
462 |
sd->data[5] = 0x01; |
463 |
sd->data[6] = 0x80; /* Supported group 4 functions */ |
464 |
sd->data[7] = 0x01; |
465 |
sd->data[8] = 0x80; /* Supported group 3 functions */ |
466 |
sd->data[9] = 0x01; |
467 |
sd->data[10] = 0x80; /* Supported group 2 functions */ |
468 |
sd->data[11] = 0x43; |
469 |
sd->data[12] = 0x80; /* Supported group 1 functions */ |
470 |
sd->data[13] = 0x03; |
471 |
for (i = 0; i < 6; i ++) { |
472 |
new_func = (arg >> (i * 4)) & 0x0f; |
473 |
if (mode && new_func != 0x0f) |
474 |
sd->function_group[i] = new_func; |
475 |
sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4); |
476 |
} |
477 |
memset(&sd->data[17], 0, 47); |
478 |
crc = sd_crc16(sd->data, 64);
|
479 |
sd->data[65] = crc >> 8; |
480 |
sd->data[66] = crc & 0xff; |
481 |
} |
482 |
|
483 |
static inline int sd_wp_addr(SDState *sd, uint32_t addr) |
484 |
{ |
485 |
return sd->wp_groups[addr >>
|
486 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)]; |
487 |
} |
488 |
|
489 |
static void sd_lock_command(SDState *sd) |
490 |
{ |
491 |
int erase, lock, clr_pwd, set_pwd, pwd_len;
|
492 |
erase = !!(sd->data[0] & 0x08); |
493 |
lock = sd->data[0] & 0x04; |
494 |
clr_pwd = sd->data[0] & 0x02; |
495 |
set_pwd = sd->data[0] & 0x01; |
496 |
|
497 |
if (sd->blk_len > 1) |
498 |
pwd_len = sd->data[1];
|
499 |
else
|
500 |
pwd_len = 0;
|
501 |
|
502 |
if (erase) {
|
503 |
if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 || |
504 |
set_pwd || clr_pwd || lock || sd->wp_switch || |
505 |
(sd->csd[14] & 0x20)) { |
506 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
507 |
return;
|
508 |
} |
509 |
memset(sd->wp_groups, 0, sizeof(int) * (sd->size >> |
510 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT))); |
511 |
sd->csd[14] &= ~0x10; |
512 |
sd->card_status &= ~CARD_IS_LOCKED; |
513 |
sd->pwd_len = 0;
|
514 |
/* Erasing the entire card here! */
|
515 |
printf("SD: Card force-erased by CMD42\n");
|
516 |
return;
|
517 |
} |
518 |
|
519 |
if (sd->blk_len < 2 + pwd_len || |
520 |
pwd_len <= sd->pwd_len || |
521 |
pwd_len > sd->pwd_len + 16) {
|
522 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
523 |
return;
|
524 |
} |
525 |
|
526 |
if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) { |
527 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
528 |
return;
|
529 |
} |
530 |
|
531 |
pwd_len -= sd->pwd_len; |
532 |
if ((pwd_len && !set_pwd) ||
|
533 |
(clr_pwd && (set_pwd || lock)) || |
534 |
(lock && !sd->pwd_len && !set_pwd) || |
535 |
(!set_pwd && !clr_pwd && |
536 |
(((sd->card_status & CARD_IS_LOCKED) && lock) || |
537 |
(!(sd->card_status & CARD_IS_LOCKED) && !lock)))) { |
538 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
539 |
return;
|
540 |
} |
541 |
|
542 |
if (set_pwd) {
|
543 |
memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len);
|
544 |
sd->pwd_len = pwd_len; |
545 |
} |
546 |
|
547 |
if (clr_pwd) {
|
548 |
sd->pwd_len = 0;
|
549 |
} |
550 |
|
551 |
if (lock)
|
552 |
sd->card_status |= CARD_IS_LOCKED; |
553 |
else
|
554 |
sd->card_status &= ~CARD_IS_LOCKED; |
555 |
} |
556 |
|
557 |
static sd_rsp_type_t sd_normal_command(SDState *sd,
|
558 |
struct sd_request_s req)
|
559 |
{ |
560 |
uint32_t rca = 0x0000;
|
561 |
|
562 |
if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
|
563 |
rca = req.arg >> 16;
|
564 |
|
565 |
DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state);
|
566 |
switch (req.cmd) {
|
567 |
/* Basic commands (Class 0 and Class 1) */
|
568 |
case 0: /* CMD0: GO_IDLE_STATE */ |
569 |
switch (sd->state) {
|
570 |
case sd_inactive_state:
|
571 |
return sd_r0;
|
572 |
|
573 |
default:
|
574 |
sd->state = sd_idle_state; |
575 |
sd_reset(sd, sd->bdrv); |
576 |
return sd_r0;
|
577 |
} |
578 |
break;
|
579 |
|
580 |
case 2: /* CMD2: ALL_SEND_CID */ |
581 |
switch (sd->state) {
|
582 |
case sd_ready_state:
|
583 |
sd->state = sd_identification_state; |
584 |
return sd_r2_i;
|
585 |
|
586 |
default:
|
587 |
break;
|
588 |
} |
589 |
break;
|
590 |
|
591 |
case 3: /* CMD3: SEND_RELATIVE_ADDR */ |
592 |
switch (sd->state) {
|
593 |
case sd_identification_state:
|
594 |
case sd_standby_state:
|
595 |
sd->state = sd_standby_state; |
596 |
sd_set_rca(sd); |
597 |
return sd_r6;
|
598 |
|
599 |
default:
|
600 |
break;
|
601 |
} |
602 |
break;
|
603 |
|
604 |
case 4: /* CMD4: SEND_DSR */ |
605 |
switch (sd->state) {
|
606 |
case sd_standby_state:
|
607 |
break;
|
608 |
|
609 |
default:
|
610 |
break;
|
611 |
} |
612 |
break;
|
613 |
|
614 |
case 6: /* CMD6: SWITCH_FUNCTION */ |
615 |
switch (sd->mode) {
|
616 |
case sd_data_transfer_mode:
|
617 |
sd_function_switch(sd, req.arg); |
618 |
sd->state = sd_sendingdata_state; |
619 |
sd->data_start = 0;
|
620 |
sd->data_offset = 0;
|
621 |
return sd_r1;
|
622 |
|
623 |
default:
|
624 |
break;
|
625 |
} |
626 |
break;
|
627 |
|
628 |
case 7: /* CMD7: SELECT/DESELECT_CARD */ |
629 |
switch (sd->state) {
|
630 |
case sd_standby_state:
|
631 |
if (sd->rca != rca)
|
632 |
return sd_r0;
|
633 |
|
634 |
sd->state = sd_transfer_state; |
635 |
return sd_r1b;
|
636 |
|
637 |
case sd_transfer_state:
|
638 |
case sd_sendingdata_state:
|
639 |
if (sd->rca == rca)
|
640 |
break;
|
641 |
|
642 |
sd->state = sd_standby_state; |
643 |
return sd_r1b;
|
644 |
|
645 |
case sd_disconnect_state:
|
646 |
if (sd->rca != rca)
|
647 |
return sd_r0;
|
648 |
|
649 |
sd->state = sd_programming_state; |
650 |
return sd_r1b;
|
651 |
|
652 |
case sd_programming_state:
|
653 |
if (sd->rca == rca)
|
654 |
break;
|
655 |
|
656 |
sd->state = sd_disconnect_state; |
657 |
return sd_r1b;
|
658 |
|
659 |
default:
|
660 |
break;
|
661 |
} |
662 |
break;
|
663 |
|
664 |
case 9: /* CMD9: SEND_CSD */ |
665 |
switch (sd->state) {
|
666 |
case sd_standby_state:
|
667 |
if (sd->rca != rca)
|
668 |
return sd_r0;
|
669 |
|
670 |
return sd_r2_s;
|
671 |
|
672 |
default:
|
673 |
break;
|
674 |
} |
675 |
break;
|
676 |
|
677 |
case 10: /* CMD10: SEND_CID */ |
678 |
switch (sd->state) {
|
679 |
case sd_standby_state:
|
680 |
if (sd->rca != rca)
|
681 |
return sd_r0;
|
682 |
|
683 |
return sd_r2_i;
|
684 |
|
685 |
default:
|
686 |
break;
|
687 |
} |
688 |
break;
|
689 |
|
690 |
case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
691 |
switch (sd->state) {
|
692 |
case sd_transfer_state:
|
693 |
sd->state = sd_sendingdata_state; |
694 |
sd->data_start = req.arg; |
695 |
sd->data_offset = 0;
|
696 |
|
697 |
if (sd->data_start + sd->blk_len > sd->size)
|
698 |
sd->card_status |= ADDRESS_ERROR; |
699 |
return sd_r0;
|
700 |
|
701 |
default:
|
702 |
break;
|
703 |
} |
704 |
break;
|
705 |
|
706 |
case 12: /* CMD12: STOP_TRANSMISSION */ |
707 |
switch (sd->state) {
|
708 |
case sd_sendingdata_state:
|
709 |
sd->state = sd_transfer_state; |
710 |
return sd_r1b;
|
711 |
|
712 |
case sd_receivingdata_state:
|
713 |
sd->state = sd_programming_state; |
714 |
/* Bzzzzzzztt .... Operation complete. */
|
715 |
sd->state = sd_transfer_state; |
716 |
return sd_r1b;
|
717 |
|
718 |
default:
|
719 |
break;
|
720 |
} |
721 |
break;
|
722 |
|
723 |
case 13: /* CMD13: SEND_STATUS */ |
724 |
switch (sd->mode) {
|
725 |
case sd_data_transfer_mode:
|
726 |
if (sd->rca != rca)
|
727 |
return sd_r0;
|
728 |
|
729 |
return sd_r1;
|
730 |
|
731 |
default:
|
732 |
break;
|
733 |
} |
734 |
break;
|
735 |
|
736 |
case 15: /* CMD15: GO_INACTIVE_STATE */ |
737 |
switch (sd->mode) {
|
738 |
case sd_data_transfer_mode:
|
739 |
if (sd->rca != rca)
|
740 |
return sd_r0;
|
741 |
|
742 |
sd->state = sd_inactive_state; |
743 |
return sd_r0;
|
744 |
|
745 |
default:
|
746 |
break;
|
747 |
} |
748 |
break;
|
749 |
|
750 |
/* Block read commands (Classs 2) */
|
751 |
case 16: /* CMD16: SET_BLOCKLEN */ |
752 |
switch (sd->state) {
|
753 |
case sd_transfer_state:
|
754 |
if (req.arg > (1 << HWBLOCK_SHIFT)) |
755 |
sd->card_status |= BLOCK_LEN_ERROR; |
756 |
else
|
757 |
sd->blk_len = req.arg; |
758 |
|
759 |
return sd_r1;
|
760 |
|
761 |
default:
|
762 |
break;
|
763 |
} |
764 |
break;
|
765 |
|
766 |
case 17: /* CMD17: READ_SINGLE_BLOCK */ |
767 |
switch (sd->state) {
|
768 |
case sd_transfer_state:
|
769 |
sd->state = sd_sendingdata_state; |
770 |
sd->data_start = req.arg; |
771 |
sd->data_offset = 0;
|
772 |
|
773 |
if (sd->data_start + sd->blk_len > sd->size)
|
774 |
sd->card_status |= ADDRESS_ERROR; |
775 |
return sd_r1;
|
776 |
|
777 |
default:
|
778 |
break;
|
779 |
} |
780 |
break;
|
781 |
|
782 |
case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
783 |
switch (sd->state) {
|
784 |
case sd_transfer_state:
|
785 |
sd->state = sd_sendingdata_state; |
786 |
sd->data_start = req.arg; |
787 |
sd->data_offset = 0;
|
788 |
|
789 |
if (sd->data_start + sd->blk_len > sd->size)
|
790 |
sd->card_status |= ADDRESS_ERROR; |
791 |
return sd_r1;
|
792 |
|
793 |
default:
|
794 |
break;
|
795 |
} |
796 |
break;
|
797 |
|
798 |
/* Block write commands (Class 4) */
|
799 |
case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
800 |
switch (sd->state) {
|
801 |
case sd_transfer_state:
|
802 |
sd->state = sd_receivingdata_state; |
803 |
sd->data_start = req.arg; |
804 |
sd->data_offset = 0;
|
805 |
sd->blk_written = 0;
|
806 |
|
807 |
if (sd->data_start + sd->blk_len > sd->size)
|
808 |
sd->card_status |= ADDRESS_ERROR; |
809 |
if (sd_wp_addr(sd, sd->data_start))
|
810 |
sd->card_status |= WP_VIOLATION; |
811 |
if (sd->csd[14] & 0x30) |
812 |
sd->card_status |= WP_VIOLATION; |
813 |
return sd_r1;
|
814 |
|
815 |
default:
|
816 |
break;
|
817 |
} |
818 |
break;
|
819 |
|
820 |
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
821 |
switch (sd->state) {
|
822 |
case sd_transfer_state:
|
823 |
sd->state = sd_receivingdata_state; |
824 |
sd->data_start = req.arg; |
825 |
sd->data_offset = 0;
|
826 |
sd->blk_written = 0;
|
827 |
|
828 |
if (sd->data_start + sd->blk_len > sd->size)
|
829 |
sd->card_status |= ADDRESS_ERROR; |
830 |
if (sd_wp_addr(sd, sd->data_start))
|
831 |
sd->card_status |= WP_VIOLATION; |
832 |
if (sd->csd[14] & 0x30) |
833 |
sd->card_status |= WP_VIOLATION; |
834 |
return sd_r1;
|
835 |
|
836 |
default:
|
837 |
break;
|
838 |
} |
839 |
break;
|
840 |
|
841 |
case 26: /* CMD26: PROGRAM_CID */ |
842 |
switch (sd->state) {
|
843 |
case sd_transfer_state:
|
844 |
sd->state = sd_receivingdata_state; |
845 |
sd->data_start = 0;
|
846 |
sd->data_offset = 0;
|
847 |
return sd_r1;
|
848 |
|
849 |
default:
|
850 |
break;
|
851 |
} |
852 |
break;
|
853 |
|
854 |
case 27: /* CMD27: PROGRAM_CSD */ |
855 |
switch (sd->state) {
|
856 |
case sd_transfer_state:
|
857 |
sd->state = sd_receivingdata_state; |
858 |
sd->data_start = 0;
|
859 |
sd->data_offset = 0;
|
860 |
return sd_r1;
|
861 |
|
862 |
default:
|
863 |
break;
|
864 |
} |
865 |
break;
|
866 |
|
867 |
/* Write protection (Class 6) */
|
868 |
case 28: /* CMD28: SET_WRITE_PROT */ |
869 |
switch (sd->state) {
|
870 |
case sd_transfer_state:
|
871 |
if (req.arg >= sd->size) {
|
872 |
sd->card_status = ADDRESS_ERROR; |
873 |
return sd_r1b;
|
874 |
} |
875 |
|
876 |
sd->state = sd_programming_state; |
877 |
sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + |
878 |
SECTOR_SHIFT + WPGROUP_SHIFT)] = 1;
|
879 |
/* Bzzzzzzztt .... Operation complete. */
|
880 |
sd->state = sd_transfer_state; |
881 |
return sd_r1b;
|
882 |
|
883 |
default:
|
884 |
break;
|
885 |
} |
886 |
break;
|
887 |
|
888 |
case 29: /* CMD29: CLR_WRITE_PROT */ |
889 |
switch (sd->state) {
|
890 |
case sd_transfer_state:
|
891 |
if (req.arg >= sd->size) {
|
892 |
sd->card_status = ADDRESS_ERROR; |
893 |
return sd_r1b;
|
894 |
} |
895 |
|
896 |
sd->state = sd_programming_state; |
897 |
sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + |
898 |
SECTOR_SHIFT + WPGROUP_SHIFT)] = 0;
|
899 |
/* Bzzzzzzztt .... Operation complete. */
|
900 |
sd->state = sd_transfer_state; |
901 |
return sd_r1b;
|
902 |
|
903 |
default:
|
904 |
break;
|
905 |
} |
906 |
break;
|
907 |
|
908 |
case 30: /* CMD30: SEND_WRITE_PROT */ |
909 |
switch (sd->state) {
|
910 |
case sd_transfer_state:
|
911 |
sd->state = sd_sendingdata_state; |
912 |
*(uint32_t *) sd->data = sd_wpbits(sd, req.arg); |
913 |
sd->data_start = req.arg; |
914 |
sd->data_offset = 0;
|
915 |
return sd_r1b;
|
916 |
|
917 |
default:
|
918 |
break;
|
919 |
} |
920 |
break;
|
921 |
|
922 |
/* Erase commands (Class 5) */
|
923 |
case 32: /* CMD32: ERASE_WR_BLK_START */ |
924 |
switch (sd->state) {
|
925 |
case sd_transfer_state:
|
926 |
sd->erase_start = req.arg; |
927 |
return sd_r1;
|
928 |
|
929 |
default:
|
930 |
break;
|
931 |
} |
932 |
break;
|
933 |
|
934 |
case 33: /* CMD33: ERASE_WR_BLK_END */ |
935 |
switch (sd->state) {
|
936 |
case sd_transfer_state:
|
937 |
sd->erase_end = req.arg; |
938 |
return sd_r1;
|
939 |
|
940 |
default:
|
941 |
break;
|
942 |
} |
943 |
break;
|
944 |
|
945 |
case 38: /* CMD38: ERASE */ |
946 |
switch (sd->state) {
|
947 |
case sd_transfer_state:
|
948 |
if (sd->csd[14] & 0x30) { |
949 |
sd->card_status |= WP_VIOLATION; |
950 |
return sd_r1b;
|
951 |
} |
952 |
|
953 |
sd->state = sd_programming_state; |
954 |
sd_erase(sd); |
955 |
/* Bzzzzzzztt .... Operation complete. */
|
956 |
sd->state = sd_transfer_state; |
957 |
return sd_r1b;
|
958 |
|
959 |
default:
|
960 |
break;
|
961 |
} |
962 |
break;
|
963 |
|
964 |
/* Lock card commands (Class 7) */
|
965 |
case 42: /* CMD42: LOCK_UNLOCK */ |
966 |
switch (sd->state) {
|
967 |
case sd_transfer_state:
|
968 |
sd->state = sd_receivingdata_state; |
969 |
sd->data_start = 0;
|
970 |
sd->data_offset = 0;
|
971 |
return sd_r1;
|
972 |
|
973 |
default:
|
974 |
break;
|
975 |
} |
976 |
break;
|
977 |
|
978 |
/* Application specific commands (Class 8) */
|
979 |
case 55: /* CMD55: APP_CMD */ |
980 |
if (sd->rca != rca)
|
981 |
return sd_r0;
|
982 |
|
983 |
sd->card_status |= APP_CMD; |
984 |
return sd_r1;
|
985 |
|
986 |
case 56: /* CMD56: GEN_CMD */ |
987 |
printf("SD: GEN_CMD 0x%08x\n", req.arg);
|
988 |
|
989 |
switch (sd->state) {
|
990 |
case sd_transfer_state:
|
991 |
sd->data_offset = 0;
|
992 |
if (req.arg & 1) |
993 |
sd->state = sd_sendingdata_state; |
994 |
else
|
995 |
sd->state = sd_receivingdata_state; |
996 |
return sd_r1;
|
997 |
|
998 |
default:
|
999 |
break;
|
1000 |
} |
1001 |
break;
|
1002 |
|
1003 |
default:
|
1004 |
sd->card_status |= ILLEGAL_COMMAND; |
1005 |
|
1006 |
printf("SD: Unknown CMD%i\n", req.cmd);
|
1007 |
return sd_r0;
|
1008 |
} |
1009 |
|
1010 |
sd->card_status |= ILLEGAL_COMMAND; |
1011 |
printf("SD: CMD%i in a wrong state\n", req.cmd);
|
1012 |
return sd_r0;
|
1013 |
} |
1014 |
|
1015 |
static sd_rsp_type_t sd_app_command(SDState *sd,
|
1016 |
struct sd_request_s req) {
|
1017 |
uint32_t rca; |
1018 |
|
1019 |
if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
|
1020 |
rca = req.arg >> 16;
|
1021 |
|
1022 |
DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg);
|
1023 |
switch (req.cmd) {
|
1024 |
case 6: /* ACMD6: SET_BUS_WIDTH */ |
1025 |
switch (sd->state) {
|
1026 |
case sd_transfer_state:
|
1027 |
sd->sd_status[0] &= 0x3f; |
1028 |
sd->sd_status[0] |= (req.arg & 0x03) << 6; |
1029 |
return sd_r1;
|
1030 |
|
1031 |
default:
|
1032 |
break;
|
1033 |
} |
1034 |
break;
|
1035 |
|
1036 |
case 13: /* ACMD13: SD_STATUS */ |
1037 |
switch (sd->state) {
|
1038 |
case sd_transfer_state:
|
1039 |
sd->data_start = 0;
|
1040 |
sd->data_offset = 0;
|
1041 |
return sd_r1;
|
1042 |
|
1043 |
default:
|
1044 |
break;
|
1045 |
} |
1046 |
break;
|
1047 |
|
1048 |
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
1049 |
switch (sd->state) {
|
1050 |
case sd_transfer_state:
|
1051 |
*(uint32_t *) sd->data = sd->blk_written; |
1052 |
|
1053 |
sd->data_start = 0;
|
1054 |
sd->data_offset = 0;
|
1055 |
return sd_r1;
|
1056 |
|
1057 |
default:
|
1058 |
break;
|
1059 |
} |
1060 |
break;
|
1061 |
|
1062 |
case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */ |
1063 |
switch (sd->state) {
|
1064 |
case sd_transfer_state:
|
1065 |
return sd_r1;
|
1066 |
|
1067 |
default:
|
1068 |
break;
|
1069 |
} |
1070 |
break;
|
1071 |
|
1072 |
case 41: /* ACMD41: SD_APP_OP_COND */ |
1073 |
switch (sd->state) {
|
1074 |
case sd_idle_state:
|
1075 |
/* We accept any voltage. 10000 V is nothing. */
|
1076 |
if (req.arg)
|
1077 |
sd->state = sd_ready_state; |
1078 |
|
1079 |
return sd_r3;
|
1080 |
|
1081 |
default:
|
1082 |
break;
|
1083 |
} |
1084 |
break;
|
1085 |
|
1086 |
case 42: /* ACMD42: SET_CLR_CARD_DETECT */ |
1087 |
switch (sd->state) {
|
1088 |
case sd_transfer_state:
|
1089 |
/* Bringing in the 50KOhm pull-up resistor... Done. */
|
1090 |
return sd_r1;
|
1091 |
|
1092 |
default:
|
1093 |
break;
|
1094 |
} |
1095 |
break;
|
1096 |
|
1097 |
case 51: /* ACMD51: SEND_SCR */ |
1098 |
switch (sd->state) {
|
1099 |
case sd_transfer_state:
|
1100 |
sd->state = sd_sendingdata_state; |
1101 |
sd->data_start = 0;
|
1102 |
sd->data_offset = 0;
|
1103 |
return sd_r1;
|
1104 |
|
1105 |
default:
|
1106 |
break;
|
1107 |
} |
1108 |
break;
|
1109 |
|
1110 |
default:
|
1111 |
/* Fall back to standard commands. */
|
1112 |
sd->card_status &= ~APP_CMD; |
1113 |
return sd_normal_command(sd, req);
|
1114 |
} |
1115 |
|
1116 |
printf("SD: ACMD%i in a wrong state\n", req.cmd);
|
1117 |
return sd_r0;
|
1118 |
} |
1119 |
|
1120 |
int sd_do_command(SDState *sd, struct sd_request_s *req, |
1121 |
uint8_t *response) { |
1122 |
uint32_t last_status = sd->card_status; |
1123 |
sd_rsp_type_t rtype; |
1124 |
int rsplen;
|
1125 |
|
1126 |
if (!bdrv_is_inserted(sd->bdrv)) {
|
1127 |
return 0; |
1128 |
} |
1129 |
|
1130 |
if (sd_req_crc_validate(req)) {
|
1131 |
sd->card_status &= ~COM_CRC_ERROR; |
1132 |
return 0; |
1133 |
} |
1134 |
|
1135 |
sd->card_status &= ~CARD_STATUS_B; |
1136 |
sd_set_status(sd); |
1137 |
|
1138 |
if (last_status & CARD_IS_LOCKED)
|
1139 |
if (((last_status & APP_CMD) &&
|
1140 |
req->cmd == 41) ||
|
1141 |
(!(last_status & APP_CMD) && |
1142 |
(sd_cmd_class[req->cmd] == 0 ||
|
1143 |
sd_cmd_class[req->cmd] == 7 ||
|
1144 |
req->cmd == 16 || req->cmd == 55))) { |
1145 |
sd->card_status |= ILLEGAL_COMMAND; |
1146 |
printf("SD: Card is locked\n");
|
1147 |
return 0; |
1148 |
} |
1149 |
|
1150 |
if (last_status & APP_CMD) {
|
1151 |
rtype = sd_app_command(sd, *req); |
1152 |
sd->card_status &= ~APP_CMD; |
1153 |
} else
|
1154 |
rtype = sd_normal_command(sd, *req); |
1155 |
|
1156 |
sd->current_cmd = req->cmd; |
1157 |
|
1158 |
switch (rtype) {
|
1159 |
case sd_r1:
|
1160 |
case sd_r1b:
|
1161 |
sd_response_r1_make(sd, response, last_status); |
1162 |
rsplen = 4;
|
1163 |
break;
|
1164 |
|
1165 |
case sd_r2_i:
|
1166 |
memcpy(response, sd->cid, sizeof(sd->cid));
|
1167 |
response[7] |= 1; |
1168 |
rsplen = 16;
|
1169 |
break;
|
1170 |
|
1171 |
case sd_r2_s:
|
1172 |
memcpy(response, sd->csd, sizeof(sd->csd));
|
1173 |
response[7] |= 1; |
1174 |
rsplen = 16;
|
1175 |
break;
|
1176 |
|
1177 |
case sd_r3:
|
1178 |
sd_response_r3_make(sd, response); |
1179 |
rsplen = 4;
|
1180 |
break;
|
1181 |
|
1182 |
case sd_r6:
|
1183 |
sd_response_r6_make(sd, response); |
1184 |
rsplen = 4;
|
1185 |
break;
|
1186 |
|
1187 |
case sd_r0:
|
1188 |
default:
|
1189 |
rsplen = 0;
|
1190 |
break;
|
1191 |
} |
1192 |
|
1193 |
if (sd->card_status & ILLEGAL_COMMAND)
|
1194 |
rsplen = 0;
|
1195 |
|
1196 |
#ifdef DEBUG_SD
|
1197 |
if (rsplen) {
|
1198 |
int i;
|
1199 |
DPRINTF("Response:");
|
1200 |
for (i = 0; i < rsplen; i++) |
1201 |
printf(" %02x", response[i]);
|
1202 |
printf(" state %d\n", sd->state);
|
1203 |
} else {
|
1204 |
DPRINTF("No response %d\n", sd->state);
|
1205 |
} |
1206 |
#endif
|
1207 |
|
1208 |
return rsplen;
|
1209 |
} |
1210 |
|
1211 |
/* No real need for 64 bit addresses here */
|
1212 |
static void sd_blk_read(BlockDriverState *bdrv, |
1213 |
void *data, uint32_t addr, uint32_t len)
|
1214 |
{ |
1215 |
uint8_t buf[512];
|
1216 |
uint32_t end = addr + len; |
1217 |
|
1218 |
if (!bdrv || bdrv_read(bdrv, addr >> 9, buf, 1) == -1) { |
1219 |
printf("sd_blk_read: read error on host side\n");
|
1220 |
return;
|
1221 |
} |
1222 |
|
1223 |
if (end > (addr & ~511) + 512) { |
1224 |
memcpy(data, buf + (addr & 511), 512 - (addr & 511)); |
1225 |
|
1226 |
if (bdrv_read(bdrv, end >> 9, buf, 1) == -1) { |
1227 |
printf("sd_blk_read: read error on host side\n");
|
1228 |
return;
|
1229 |
} |
1230 |
memcpy(data + 512 - (addr & 511), buf, end & 511); |
1231 |
} else
|
1232 |
memcpy(data, buf + (addr & 511), len);
|
1233 |
} |
1234 |
|
1235 |
static void sd_blk_write(BlockDriverState *bdrv, |
1236 |
void *data, uint32_t addr, uint32_t len)
|
1237 |
{ |
1238 |
uint8_t buf[512];
|
1239 |
uint32_t end = addr + len; |
1240 |
|
1241 |
if ((addr & 511) || len < 512) |
1242 |
if (!bdrv || bdrv_read(bdrv, addr >> 9, buf, 1) == -1) { |
1243 |
printf("sd_blk_write: read error on host side\n");
|
1244 |
return;
|
1245 |
} |
1246 |
|
1247 |
if (end > (addr & ~511) + 512) { |
1248 |
memcpy(buf + (addr & 511), data, 512 - (addr & 511)); |
1249 |
if (bdrv_write(bdrv, addr >> 9, buf, 1) == -1) { |
1250 |
printf("sd_blk_write: write error on host side\n");
|
1251 |
return;
|
1252 |
} |
1253 |
|
1254 |
if (bdrv_read(bdrv, end >> 9, buf, 1) == -1) { |
1255 |
printf("sd_blk_write: read error on host side\n");
|
1256 |
return;
|
1257 |
} |
1258 |
memcpy(buf, data + 512 - (addr & 511), end & 511); |
1259 |
if (bdrv_write(bdrv, end >> 9, buf, 1) == -1) |
1260 |
printf("sd_blk_write: write error on host side\n");
|
1261 |
} else {
|
1262 |
memcpy(buf + (addr & 511), data, len);
|
1263 |
if (!bdrv || bdrv_write(bdrv, addr >> 9, buf, 1) == -1) |
1264 |
printf("sd_blk_write: write error on host side\n");
|
1265 |
} |
1266 |
} |
1267 |
|
1268 |
#define BLK_READ_BLOCK(a, len) sd_blk_read(sd->bdrv, sd->data, a, len)
|
1269 |
#define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd->bdrv, sd->data, a, len)
|
1270 |
#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len) |
1271 |
#define APP_WRITE_BLOCK(a, len)
|
1272 |
|
1273 |
void sd_write_data(SDState *sd, uint8_t value)
|
1274 |
{ |
1275 |
int i;
|
1276 |
|
1277 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv))
|
1278 |
return;
|
1279 |
|
1280 |
if (sd->state != sd_receivingdata_state) {
|
1281 |
printf("sd_write_data: not in Receiving-Data state\n");
|
1282 |
return;
|
1283 |
} |
1284 |
|
1285 |
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
1286 |
return;
|
1287 |
|
1288 |
switch (sd->current_cmd) {
|
1289 |
case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
1290 |
sd->data[sd->data_offset ++] = value; |
1291 |
if (sd->data_offset >= sd->blk_len) {
|
1292 |
/* TODO: Check CRC before committing */
|
1293 |
sd->state = sd_programming_state; |
1294 |
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1295 |
sd->blk_written ++; |
1296 |
sd->csd[14] |= 0x40; |
1297 |
/* Bzzzzzzztt .... Operation complete. */
|
1298 |
sd->state = sd_transfer_state; |
1299 |
} |
1300 |
break;
|
1301 |
|
1302 |
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
1303 |
sd->data[sd->data_offset ++] = value; |
1304 |
if (sd->data_offset >= sd->blk_len) {
|
1305 |
/* TODO: Check CRC before committing */
|
1306 |
sd->state = sd_programming_state; |
1307 |
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1308 |
sd->blk_written ++; |
1309 |
sd->data_start += sd->blk_len; |
1310 |
sd->data_offset = 0;
|
1311 |
if (sd->data_start + sd->blk_len > sd->size) {
|
1312 |
sd->card_status |= ADDRESS_ERROR; |
1313 |
break;
|
1314 |
} |
1315 |
if (sd_wp_addr(sd, sd->data_start)) {
|
1316 |
sd->card_status |= WP_VIOLATION; |
1317 |
break;
|
1318 |
} |
1319 |
sd->csd[14] |= 0x40; |
1320 |
|
1321 |
/* Bzzzzzzztt .... Operation complete. */
|
1322 |
sd->state = sd_receivingdata_state; |
1323 |
} |
1324 |
break;
|
1325 |
|
1326 |
case 26: /* CMD26: PROGRAM_CID */ |
1327 |
sd->data[sd->data_offset ++] = value; |
1328 |
if (sd->data_offset >= sizeof(sd->cid)) { |
1329 |
/* TODO: Check CRC before committing */
|
1330 |
sd->state = sd_programming_state; |
1331 |
for (i = 0; i < sizeof(sd->cid); i ++) |
1332 |
if ((sd->cid[i] | 0x00) != sd->data[i]) |
1333 |
sd->card_status |= CID_CSD_OVERWRITE; |
1334 |
|
1335 |
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
1336 |
for (i = 0; i < sizeof(sd->cid); i ++) { |
1337 |
sd->cid[i] |= 0x00;
|
1338 |
sd->cid[i] &= sd->data[i]; |
1339 |
} |
1340 |
/* Bzzzzzzztt .... Operation complete. */
|
1341 |
sd->state = sd_transfer_state; |
1342 |
} |
1343 |
break;
|
1344 |
|
1345 |
case 27: /* CMD27: PROGRAM_CSD */ |
1346 |
sd->data[sd->data_offset ++] = value; |
1347 |
if (sd->data_offset >= sizeof(sd->csd)) { |
1348 |
/* TODO: Check CRC before committing */
|
1349 |
sd->state = sd_programming_state; |
1350 |
for (i = 0; i < sizeof(sd->csd); i ++) |
1351 |
if ((sd->csd[i] | sd_csd_rw_mask[i]) !=
|
1352 |
(sd->data[i] | sd_csd_rw_mask[i])) |
1353 |
sd->card_status |= CID_CSD_OVERWRITE; |
1354 |
|
1355 |
/* Copy flag (OTP) & Permanent write protect */
|
1356 |
if (sd->csd[14] & ~sd->data[14] & 0x60) |
1357 |
sd->card_status |= CID_CSD_OVERWRITE; |
1358 |
|
1359 |
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
1360 |
for (i = 0; i < sizeof(sd->csd); i ++) { |
1361 |
sd->csd[i] |= sd_csd_rw_mask[i]; |
1362 |
sd->csd[i] &= sd->data[i]; |
1363 |
} |
1364 |
/* Bzzzzzzztt .... Operation complete. */
|
1365 |
sd->state = sd_transfer_state; |
1366 |
} |
1367 |
break;
|
1368 |
|
1369 |
case 42: /* CMD42: LOCK_UNLOCK */ |
1370 |
sd->data[sd->data_offset ++] = value; |
1371 |
if (sd->data_offset >= sd->blk_len) {
|
1372 |
/* TODO: Check CRC before committing */
|
1373 |
sd->state = sd_programming_state; |
1374 |
sd_lock_command(sd); |
1375 |
/* Bzzzzzzztt .... Operation complete. */
|
1376 |
sd->state = sd_transfer_state; |
1377 |
} |
1378 |
break;
|
1379 |
|
1380 |
case 56: /* CMD56: GEN_CMD */ |
1381 |
sd->data[sd->data_offset ++] = value; |
1382 |
if (sd->data_offset >= sd->blk_len) {
|
1383 |
APP_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1384 |
sd->state = sd_transfer_state; |
1385 |
} |
1386 |
break;
|
1387 |
|
1388 |
default:
|
1389 |
printf("sd_write_data: unknown command\n");
|
1390 |
break;
|
1391 |
} |
1392 |
} |
1393 |
|
1394 |
uint8_t sd_read_data(SDState *sd) |
1395 |
{ |
1396 |
/* TODO: Append CRCs */
|
1397 |
uint8_t ret; |
1398 |
|
1399 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv))
|
1400 |
return 0x00; |
1401 |
|
1402 |
if (sd->state != sd_sendingdata_state) {
|
1403 |
printf("sd_read_data: not in Sending-Data state\n");
|
1404 |
return 0x00; |
1405 |
} |
1406 |
|
1407 |
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
1408 |
return 0x00; |
1409 |
|
1410 |
switch (sd->current_cmd) {
|
1411 |
case 6: /* CMD6: SWITCH_FUNCTION */ |
1412 |
ret = sd->data[sd->data_offset ++]; |
1413 |
|
1414 |
if (sd->data_offset >= 64) |
1415 |
sd->state = sd_transfer_state; |
1416 |
break;
|
1417 |
|
1418 |
case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
1419 |
if (sd->data_offset == 0) |
1420 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
1421 |
ret = sd->data[sd->data_offset ++]; |
1422 |
|
1423 |
if (sd->data_offset >= sd->blk_len) {
|
1424 |
sd->data_start += sd->blk_len; |
1425 |
sd->data_offset = 0;
|
1426 |
if (sd->data_start + sd->blk_len > sd->size) {
|
1427 |
sd->card_status |= ADDRESS_ERROR; |
1428 |
break;
|
1429 |
} |
1430 |
} |
1431 |
break;
|
1432 |
|
1433 |
case 13: /* ACMD13: SD_STATUS */ |
1434 |
ret = sd->sd_status[sd->data_offset ++]; |
1435 |
|
1436 |
if (sd->data_offset >= sizeof(sd->sd_status)) |
1437 |
sd->state = sd_transfer_state; |
1438 |
break;
|
1439 |
|
1440 |
case 17: /* CMD17: READ_SINGLE_BLOCK */ |
1441 |
if (sd->data_offset == 0) |
1442 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
1443 |
ret = sd->data[sd->data_offset ++]; |
1444 |
|
1445 |
if (sd->data_offset >= sd->blk_len)
|
1446 |
sd->state = sd_transfer_state; |
1447 |
break;
|
1448 |
|
1449 |
case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
1450 |
if (sd->data_offset == 0) |
1451 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
1452 |
ret = sd->data[sd->data_offset ++]; |
1453 |
|
1454 |
if (sd->data_offset >= sd->blk_len) {
|
1455 |
sd->data_start += sd->blk_len; |
1456 |
sd->data_offset = 0;
|
1457 |
if (sd->data_start + sd->blk_len > sd->size) {
|
1458 |
sd->card_status |= ADDRESS_ERROR; |
1459 |
break;
|
1460 |
} |
1461 |
} |
1462 |
break;
|
1463 |
|
1464 |
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
1465 |
ret = sd->data[sd->data_offset ++]; |
1466 |
|
1467 |
if (sd->data_offset >= 4) |
1468 |
sd->state = sd_transfer_state; |
1469 |
break;
|
1470 |
|
1471 |
case 30: /* CMD30: SEND_WRITE_PROT */ |
1472 |
ret = sd->data[sd->data_offset ++]; |
1473 |
|
1474 |
if (sd->data_offset >= 4) |
1475 |
sd->state = sd_transfer_state; |
1476 |
break;
|
1477 |
|
1478 |
case 51: /* ACMD51: SEND_SCR */ |
1479 |
ret = sd->scr[sd->data_offset ++]; |
1480 |
|
1481 |
if (sd->data_offset >= sizeof(sd->scr)) |
1482 |
sd->state = sd_transfer_state; |
1483 |
break;
|
1484 |
|
1485 |
case 56: /* CMD56: GEN_CMD */ |
1486 |
if (sd->data_offset == 0) |
1487 |
APP_READ_BLOCK(sd->data_start, sd->blk_len); |
1488 |
ret = sd->data[sd->data_offset ++]; |
1489 |
|
1490 |
if (sd->data_offset >= sd->blk_len)
|
1491 |
sd->state = sd_transfer_state; |
1492 |
break;
|
1493 |
|
1494 |
default:
|
1495 |
printf("sd_read_data: unknown command\n");
|
1496 |
return 0x00; |
1497 |
} |
1498 |
|
1499 |
return ret;
|
1500 |
} |
1501 |
|
1502 |
int sd_data_ready(SDState *sd)
|
1503 |
{ |
1504 |
return sd->state == sd_sendingdata_state;
|
1505 |
} |