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1.1 root 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 <[email protected]>
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
1.1.1.3 root 39: #define DPRINTF(fmt, ...) \
40: do { fprintf(stderr, "SD: " fmt , ## __VA_ARGS__); } while (0)
1.1 root 41: #else
1.1.1.3 root 42: #define DPRINTF(fmt, ...) do {} while(0)
1.1 root 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_r7, /* Operating voltage */
53: sd_r1b = -1,
1.1.1.10! root 54: sd_illegal = -2,
1.1 root 55: } sd_rsp_type_t;
56:
57: struct SDState {
58: enum {
59: sd_inactive,
60: sd_card_identification_mode,
61: sd_data_transfer_mode,
62: } mode;
63: enum {
64: sd_inactive_state = -1,
65: sd_idle_state = 0,
66: sd_ready_state,
67: sd_identification_state,
68: sd_standby_state,
69: sd_transfer_state,
70: sd_sendingdata_state,
71: sd_receivingdata_state,
72: sd_programming_state,
73: sd_disconnect_state,
74: } state;
75: uint32_t ocr;
76: uint8_t scr[8];
77: uint8_t cid[16];
78: uint8_t csd[16];
79: uint16_t rca;
80: uint32_t card_status;
81: uint8_t sd_status[64];
82: uint32_t vhs;
83: int wp_switch;
84: int *wp_groups;
1.1.1.4 root 85: uint64_t size;
1.1 root 86: int blk_len;
87: uint32_t erase_start;
88: uint32_t erase_end;
89: uint8_t pwd[16];
90: int pwd_len;
91: int function_group[6];
92:
93: int spi;
94: int current_cmd;
1.1.1.10! root 95: /* True if we will handle the next command as an ACMD. Note that this does
! 96: * *not* track the APP_CMD status bit!
! 97: */
! 98: int expecting_acmd;
1.1 root 99: int blk_written;
1.1.1.4 root 100: uint64_t data_start;
1.1 root 101: uint32_t data_offset;
102: uint8_t data[512];
103: qemu_irq readonly_cb;
104: qemu_irq inserted_cb;
105: BlockDriverState *bdrv;
106: uint8_t *buf;
1.1.1.2 root 107:
108: int enable;
1.1 root 109: };
110:
1.1.1.10! root 111: static void sd_set_mode(SDState *sd)
1.1 root 112: {
113: switch (sd->state) {
114: case sd_inactive_state:
115: sd->mode = sd_inactive;
116: break;
117:
118: case sd_idle_state:
119: case sd_ready_state:
120: case sd_identification_state:
121: sd->mode = sd_card_identification_mode;
122: break;
123:
124: case sd_standby_state:
125: case sd_transfer_state:
126: case sd_sendingdata_state:
127: case sd_receivingdata_state:
128: case sd_programming_state:
129: case sd_disconnect_state:
130: sd->mode = sd_data_transfer_mode;
131: break;
132: }
133: }
134:
135: static const sd_cmd_type_t sd_cmd_type[64] = {
136: sd_bc, sd_none, sd_bcr, sd_bcr, sd_none, sd_none, sd_none, sd_ac,
137: sd_bcr, sd_ac, sd_ac, sd_adtc, sd_ac, sd_ac, sd_none, sd_ac,
138: sd_ac, sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none,
139: sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac, sd_ac, sd_adtc, sd_none,
140: sd_ac, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none,
141: sd_none, sd_none, sd_bc, sd_none, sd_none, sd_none, sd_none, sd_none,
142: sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac,
143: sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
144: };
145:
146: static const sd_cmd_type_t sd_acmd_type[64] = {
147: sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none,
148: sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none,
149: sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_ac,
150: sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
151: sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
152: sd_none, sd_bcr, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_none,
153: sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, sd_none, sd_none,
154: sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
155: };
156:
157: static const int sd_cmd_class[64] = {
158: 0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 1, 0, 0, 0, 0,
159: 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 6, 6,
160: 5, 5, 10, 10, 10, 10, 5, 9, 9, 9, 7, 7, 7, 7, 7, 7,
161: 7, 7, 10, 7, 9, 9, 9, 8, 8, 10, 8, 8, 8, 8, 8, 8,
162: };
163:
164: static uint8_t sd_crc7(void *message, size_t width)
165: {
166: int i, bit;
167: uint8_t shift_reg = 0x00;
168: uint8_t *msg = (uint8_t *) message;
169:
170: for (i = 0; i < width; i ++, msg ++)
171: for (bit = 7; bit >= 0; bit --) {
172: shift_reg <<= 1;
173: if ((shift_reg >> 7) ^ ((*msg >> bit) & 1))
174: shift_reg ^= 0x89;
175: }
176:
177: return shift_reg;
178: }
179:
180: static uint16_t sd_crc16(void *message, size_t width)
181: {
182: int i, bit;
183: uint16_t shift_reg = 0x0000;
184: uint16_t *msg = (uint16_t *) message;
185: width <<= 1;
186:
187: for (i = 0; i < width; i ++, msg ++)
188: for (bit = 15; bit >= 0; bit --) {
189: shift_reg <<= 1;
190: if ((shift_reg >> 15) ^ ((*msg >> bit) & 1))
191: shift_reg ^= 0x1011;
192: }
193:
194: return shift_reg;
195: }
196:
197: static void sd_set_ocr(SDState *sd)
198: {
199: /* All voltages OK, card power-up OK, Standard Capacity SD Memory Card */
1.1.1.3 root 200: sd->ocr = 0x80ffff00;
1.1 root 201: }
202:
203: static void sd_set_scr(SDState *sd)
204: {
205: sd->scr[0] = 0x00; /* SCR Structure */
206: sd->scr[1] = 0x2f; /* SD Security Support */
207: sd->scr[2] = 0x00;
208: sd->scr[3] = 0x00;
209: sd->scr[4] = 0x00;
210: sd->scr[5] = 0x00;
211: sd->scr[6] = 0x00;
212: sd->scr[7] = 0x00;
213: }
214:
215: #define MID 0xaa
216: #define OID "XY"
217: #define PNM "QEMU!"
218: #define PRV 0x01
219: #define MDT_YR 2006
220: #define MDT_MON 2
221:
222: static void sd_set_cid(SDState *sd)
223: {
224: sd->cid[0] = MID; /* Fake card manufacturer ID (MID) */
225: sd->cid[1] = OID[0]; /* OEM/Application ID (OID) */
226: sd->cid[2] = OID[1];
227: sd->cid[3] = PNM[0]; /* Fake product name (PNM) */
228: sd->cid[4] = PNM[1];
229: sd->cid[5] = PNM[2];
230: sd->cid[6] = PNM[3];
231: sd->cid[7] = PNM[4];
232: sd->cid[8] = PRV; /* Fake product revision (PRV) */
233: sd->cid[9] = 0xde; /* Fake serial number (PSN) */
234: sd->cid[10] = 0xad;
235: sd->cid[11] = 0xbe;
236: sd->cid[12] = 0xef;
237: sd->cid[13] = 0x00 | /* Manufacture date (MDT) */
238: ((MDT_YR - 2000) / 10);
239: sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON;
240: sd->cid[15] = (sd_crc7(sd->cid, 15) << 1) | 1;
241: }
242:
243: #define HWBLOCK_SHIFT 9 /* 512 bytes */
244: #define SECTOR_SHIFT 5 /* 16 kilobytes */
245: #define WPGROUP_SHIFT 7 /* 2 megs */
246: #define CMULT_SHIFT 9 /* 512 times HWBLOCK_SIZE */
247: #define WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT))
248:
249: static const uint8_t sd_csd_rw_mask[16] = {
250: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
251: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe,
252: };
253:
1.1.1.4 root 254: static void sd_set_csd(SDState *sd, uint64_t size)
1.1 root 255: {
256: uint32_t csize = (size >> (CMULT_SHIFT + HWBLOCK_SHIFT)) - 1;
257: uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1;
258: uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1;
259:
1.1.1.4 root 260: if (size <= 0x40000000) { /* Standard Capacity SD */
261: sd->csd[0] = 0x00; /* CSD structure */
262: sd->csd[1] = 0x26; /* Data read access-time-1 */
263: sd->csd[2] = 0x00; /* Data read access-time-2 */
264: sd->csd[3] = 0x5a; /* Max. data transfer rate */
265: sd->csd[4] = 0x5f; /* Card Command Classes */
266: sd->csd[5] = 0x50 | /* Max. read data block length */
267: HWBLOCK_SHIFT;
268: sd->csd[6] = 0xe0 | /* Partial block for read allowed */
269: ((csize >> 10) & 0x03);
270: sd->csd[7] = 0x00 | /* Device size */
271: ((csize >> 2) & 0xff);
272: sd->csd[8] = 0x3f | /* Max. read current */
273: ((csize << 6) & 0xc0);
274: sd->csd[9] = 0xfc | /* Max. write current */
275: ((CMULT_SHIFT - 2) >> 1);
276: sd->csd[10] = 0x40 | /* Erase sector size */
277: (((CMULT_SHIFT - 2) << 7) & 0x80) | (sectsize >> 1);
278: sd->csd[11] = 0x00 | /* Write protect group size */
279: ((sectsize << 7) & 0x80) | wpsize;
280: sd->csd[12] = 0x90 | /* Write speed factor */
281: (HWBLOCK_SHIFT >> 2);
282: sd->csd[13] = 0x20 | /* Max. write data block length */
283: ((HWBLOCK_SHIFT << 6) & 0xc0);
284: sd->csd[14] = 0x00; /* File format group */
285: sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1;
286: } else { /* SDHC */
287: size /= 512 * 1024;
288: size -= 1;
289: sd->csd[0] = 0x40;
290: sd->csd[1] = 0x0e;
291: sd->csd[2] = 0x00;
292: sd->csd[3] = 0x32;
293: sd->csd[4] = 0x5b;
294: sd->csd[5] = 0x59;
295: sd->csd[6] = 0x00;
296: sd->csd[7] = (size >> 16) & 0xff;
297: sd->csd[8] = (size >> 8) & 0xff;
298: sd->csd[9] = (size & 0xff);
299: sd->csd[10] = 0x7f;
300: sd->csd[11] = 0x80;
301: sd->csd[12] = 0x0a;
302: sd->csd[13] = 0x40;
303: sd->csd[14] = 0x00;
304: sd->csd[15] = 0x00;
305: sd->ocr |= 1 << 30; /* High Capacity SD Memort Card */
306: }
1.1 root 307: }
308:
309: static void sd_set_rca(SDState *sd)
310: {
311: sd->rca += 0x4567;
312: }
313:
1.1.1.10! root 314: /* Card status bits, split by clear condition:
! 315: * A : According to the card current state
! 316: * B : Always related to the previous command
! 317: * C : Cleared by read
! 318: */
1.1 root 319: #define CARD_STATUS_A 0x02004100
320: #define CARD_STATUS_B 0x00c01e00
321: #define CARD_STATUS_C 0xfd39a028
322:
323: static void sd_set_cardstatus(SDState *sd)
324: {
325: sd->card_status = 0x00000100;
326: }
327:
328: static void sd_set_sdstatus(SDState *sd)
329: {
330: memset(sd->sd_status, 0, 64);
331: }
332:
1.1.1.3 root 333: static int sd_req_crc_validate(SDRequest *req)
1.1 root 334: {
335: uint8_t buffer[5];
336: buffer[0] = 0x40 | req->cmd;
337: buffer[1] = (req->arg >> 24) & 0xff;
338: buffer[2] = (req->arg >> 16) & 0xff;
339: buffer[3] = (req->arg >> 8) & 0xff;
340: buffer[4] = (req->arg >> 0) & 0xff;
341: return 0;
342: return sd_crc7(buffer, 5) != req->crc; /* TODO */
343: }
344:
1.1.1.10! root 345: static void sd_response_r1_make(SDState *sd, uint8_t *response)
1.1 root 346: {
1.1.1.10! root 347: uint32_t status = sd->card_status;
! 348: /* Clear the "clear on read" status bits */
! 349: sd->card_status &= ~CARD_STATUS_C;
1.1 root 350:
351: response[0] = (status >> 24) & 0xff;
352: response[1] = (status >> 16) & 0xff;
353: response[2] = (status >> 8) & 0xff;
354: response[3] = (status >> 0) & 0xff;
355: }
356:
357: static void sd_response_r3_make(SDState *sd, uint8_t *response)
358: {
359: response[0] = (sd->ocr >> 24) & 0xff;
360: response[1] = (sd->ocr >> 16) & 0xff;
361: response[2] = (sd->ocr >> 8) & 0xff;
362: response[3] = (sd->ocr >> 0) & 0xff;
363: }
364:
365: static void sd_response_r6_make(SDState *sd, uint8_t *response)
366: {
367: uint16_t arg;
368: uint16_t status;
369:
370: arg = sd->rca;
371: status = ((sd->card_status >> 8) & 0xc000) |
372: ((sd->card_status >> 6) & 0x2000) |
373: (sd->card_status & 0x1fff);
1.1.1.10! root 374: sd->card_status &= ~(CARD_STATUS_C & 0xc81fff);
1.1 root 375:
376: response[0] = (arg >> 8) & 0xff;
377: response[1] = arg & 0xff;
378: response[2] = (status >> 8) & 0xff;
379: response[3] = status & 0xff;
380: }
381:
382: static void sd_response_r7_make(SDState *sd, uint8_t *response)
383: {
384: response[0] = (sd->vhs >> 24) & 0xff;
385: response[1] = (sd->vhs >> 16) & 0xff;
386: response[2] = (sd->vhs >> 8) & 0xff;
387: response[3] = (sd->vhs >> 0) & 0xff;
388: }
389:
390: static void sd_reset(SDState *sd, BlockDriverState *bdrv)
391: {
1.1.1.4 root 392: uint64_t size;
1.1 root 393: uint64_t sect;
394:
1.1.1.3 root 395: if (bdrv) {
396: bdrv_get_geometry(bdrv, §);
397: } else {
398: sect = 0;
399: }
1.1.1.9 root 400: size = sect << 9;
1.1 root 401:
402: sect = (size >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) + 1;
403:
404: sd->state = sd_idle_state;
405: sd->rca = 0x0000;
406: sd_set_ocr(sd);
407: sd_set_scr(sd);
408: sd_set_cid(sd);
409: sd_set_csd(sd, size);
410: sd_set_cardstatus(sd);
411: sd_set_sdstatus(sd);
412:
413: sd->bdrv = bdrv;
414:
415: if (sd->wp_groups)
1.1.1.9 root 416: g_free(sd->wp_groups);
1.1.1.3 root 417: sd->wp_switch = bdrv ? bdrv_is_read_only(bdrv) : 0;
1.1.1.9 root 418: sd->wp_groups = (int *) g_malloc0(sizeof(int) * sect);
1.1 root 419: memset(sd->function_group, 0, sizeof(int) * 6);
420: sd->erase_start = 0;
421: sd->erase_end = 0;
422: sd->size = size;
423: sd->blk_len = 0x200;
424: sd->pwd_len = 0;
1.1.1.10! root 425: sd->expecting_acmd = 0;
1.1 root 426: }
427:
1.1.1.9 root 428: static void sd_cardchange(void *opaque, bool load)
1.1 root 429: {
430: SDState *sd = opaque;
1.1.1.6 root 431:
1.1 root 432: qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv));
433: if (bdrv_is_inserted(sd->bdrv)) {
434: sd_reset(sd, sd->bdrv);
435: qemu_set_irq(sd->readonly_cb, sd->wp_switch);
436: }
437: }
438:
1.1.1.9 root 439: static const BlockDevOps sd_block_ops = {
440: .change_media_cb = sd_cardchange,
441: };
442:
1.1 root 443: /* We do not model the chip select pin, so allow the board to select
444: whether card should be in SSI or MMC/SD mode. It is also up to the
445: board to ensure that ssi transfers only occur when the chip select
446: is asserted. */
447: SDState *sd_init(BlockDriverState *bs, int is_spi)
448: {
449: SDState *sd;
450:
1.1.1.9 root 451: sd = (SDState *) g_malloc0(sizeof(SDState));
1.1.1.6 root 452: sd->buf = qemu_blockalign(bs, 512);
1.1 root 453: sd->spi = is_spi;
1.1.1.2 root 454: sd->enable = 1;
1.1 root 455: sd_reset(sd, bs);
1.1.1.3 root 456: if (sd->bdrv) {
1.1.1.9 root 457: bdrv_attach_dev_nofail(sd->bdrv, sd);
458: bdrv_set_dev_ops(sd->bdrv, &sd_block_ops, sd);
1.1.1.3 root 459: }
1.1 root 460: return sd;
461: }
462:
463: void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
464: {
465: sd->readonly_cb = readonly;
466: sd->inserted_cb = insert;
1.1.1.8 root 467: qemu_set_irq(readonly, sd->bdrv ? bdrv_is_read_only(sd->bdrv) : 0);
468: qemu_set_irq(insert, sd->bdrv ? bdrv_is_inserted(sd->bdrv) : 0);
1.1 root 469: }
470:
471: static void sd_erase(SDState *sd)
472: {
473: int i, start, end;
474: if (!sd->erase_start || !sd->erase_end) {
475: sd->card_status |= ERASE_SEQ_ERROR;
476: return;
477: }
478:
479: start = sd->erase_start >>
480: (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT);
481: end = sd->erase_end >>
482: (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT);
483: sd->erase_start = 0;
484: sd->erase_end = 0;
485: sd->csd[14] |= 0x40;
486:
487: for (i = start; i <= end; i ++)
488: if (sd->wp_groups[i])
489: sd->card_status |= WP_ERASE_SKIP;
490: }
491:
1.1.1.4 root 492: static uint32_t sd_wpbits(SDState *sd, uint64_t addr)
1.1 root 493: {
494: uint32_t i, wpnum;
495: uint32_t ret = 0;
496:
497: wpnum = addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT);
498:
499: for (i = 0; i < 32; i ++, wpnum ++, addr += WPGROUP_SIZE)
500: if (addr < sd->size && sd->wp_groups[wpnum])
501: ret |= (1 << i);
502:
503: return ret;
504: }
505:
506: static void sd_function_switch(SDState *sd, uint32_t arg)
507: {
508: int i, mode, new_func, crc;
509: mode = !!(arg & 0x80000000);
510:
511: sd->data[0] = 0x00; /* Maximum current consumption */
512: sd->data[1] = 0x01;
513: sd->data[2] = 0x80; /* Supported group 6 functions */
514: sd->data[3] = 0x01;
515: sd->data[4] = 0x80; /* Supported group 5 functions */
516: sd->data[5] = 0x01;
517: sd->data[6] = 0x80; /* Supported group 4 functions */
518: sd->data[7] = 0x01;
519: sd->data[8] = 0x80; /* Supported group 3 functions */
520: sd->data[9] = 0x01;
521: sd->data[10] = 0x80; /* Supported group 2 functions */
522: sd->data[11] = 0x43;
523: sd->data[12] = 0x80; /* Supported group 1 functions */
524: sd->data[13] = 0x03;
525: for (i = 0; i < 6; i ++) {
526: new_func = (arg >> (i * 4)) & 0x0f;
527: if (mode && new_func != 0x0f)
528: sd->function_group[i] = new_func;
529: sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4);
530: }
531: memset(&sd->data[17], 0, 47);
532: crc = sd_crc16(sd->data, 64);
533: sd->data[65] = crc >> 8;
534: sd->data[66] = crc & 0xff;
535: }
536:
537: static inline int sd_wp_addr(SDState *sd, uint32_t addr)
538: {
539: return sd->wp_groups[addr >>
540: (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)];
541: }
542:
543: static void sd_lock_command(SDState *sd)
544: {
545: int erase, lock, clr_pwd, set_pwd, pwd_len;
546: erase = !!(sd->data[0] & 0x08);
547: lock = sd->data[0] & 0x04;
548: clr_pwd = sd->data[0] & 0x02;
549: set_pwd = sd->data[0] & 0x01;
550:
551: if (sd->blk_len > 1)
552: pwd_len = sd->data[1];
553: else
554: pwd_len = 0;
555:
556: if (erase) {
557: if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 ||
558: set_pwd || clr_pwd || lock || sd->wp_switch ||
559: (sd->csd[14] & 0x20)) {
560: sd->card_status |= LOCK_UNLOCK_FAILED;
561: return;
562: }
563: memset(sd->wp_groups, 0, sizeof(int) * (sd->size >>
564: (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)));
565: sd->csd[14] &= ~0x10;
566: sd->card_status &= ~CARD_IS_LOCKED;
567: sd->pwd_len = 0;
568: /* Erasing the entire card here! */
1.1.1.2 root 569: fprintf(stderr, "SD: Card force-erased by CMD42\n");
1.1 root 570: return;
571: }
572:
573: if (sd->blk_len < 2 + pwd_len ||
574: pwd_len <= sd->pwd_len ||
575: pwd_len > sd->pwd_len + 16) {
576: sd->card_status |= LOCK_UNLOCK_FAILED;
577: return;
578: }
579:
580: if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) {
581: sd->card_status |= LOCK_UNLOCK_FAILED;
582: return;
583: }
584:
585: pwd_len -= sd->pwd_len;
586: if ((pwd_len && !set_pwd) ||
587: (clr_pwd && (set_pwd || lock)) ||
588: (lock && !sd->pwd_len && !set_pwd) ||
589: (!set_pwd && !clr_pwd &&
590: (((sd->card_status & CARD_IS_LOCKED) && lock) ||
591: (!(sd->card_status & CARD_IS_LOCKED) && !lock)))) {
592: sd->card_status |= LOCK_UNLOCK_FAILED;
593: return;
594: }
595:
596: if (set_pwd) {
597: memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len);
598: sd->pwd_len = pwd_len;
599: }
600:
601: if (clr_pwd) {
602: sd->pwd_len = 0;
603: }
604:
605: if (lock)
606: sd->card_status |= CARD_IS_LOCKED;
607: else
608: sd->card_status &= ~CARD_IS_LOCKED;
609: }
610:
611: static sd_rsp_type_t sd_normal_command(SDState *sd,
1.1.1.3 root 612: SDRequest req)
1.1 root 613: {
614: uint32_t rca = 0x0000;
1.1.1.4 root 615: uint64_t addr = (sd->ocr & (1 << 30)) ? (uint64_t) req.arg << 9 : req.arg;
1.1 root 616:
1.1.1.10! root 617: /* Not interpreting this as an app command */
! 618: sd->card_status &= ~APP_CMD;
! 619:
1.1 root 620: if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
621: rca = req.arg >> 16;
622:
623: DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state);
624: switch (req.cmd) {
625: /* Basic commands (Class 0 and Class 1) */
626: case 0: /* CMD0: GO_IDLE_STATE */
627: switch (sd->state) {
628: case sd_inactive_state:
629: return sd->spi ? sd_r1 : sd_r0;
630:
631: default:
632: sd->state = sd_idle_state;
633: sd_reset(sd, sd->bdrv);
634: return sd->spi ? sd_r1 : sd_r0;
635: }
636: break;
637:
638: case 1: /* CMD1: SEND_OP_CMD */
639: if (!sd->spi)
640: goto bad_cmd;
641:
642: sd->state = sd_transfer_state;
643: return sd_r1;
644:
645: case 2: /* CMD2: ALL_SEND_CID */
646: if (sd->spi)
647: goto bad_cmd;
648: switch (sd->state) {
649: case sd_ready_state:
650: sd->state = sd_identification_state;
651: return sd_r2_i;
652:
653: default:
654: break;
655: }
656: break;
657:
658: case 3: /* CMD3: SEND_RELATIVE_ADDR */
659: if (sd->spi)
660: goto bad_cmd;
661: switch (sd->state) {
662: case sd_identification_state:
663: case sd_standby_state:
664: sd->state = sd_standby_state;
665: sd_set_rca(sd);
666: return sd_r6;
667:
668: default:
669: break;
670: }
671: break;
672:
673: case 4: /* CMD4: SEND_DSR */
674: if (sd->spi)
675: goto bad_cmd;
676: switch (sd->state) {
677: case sd_standby_state:
678: break;
679:
680: default:
681: break;
682: }
683: break;
684:
1.1.1.5 root 685: case 5: /* CMD5: reserved for SDIO cards */
1.1.1.10! root 686: return sd_illegal;
1.1.1.5 root 687:
1.1 root 688: case 6: /* CMD6: SWITCH_FUNCTION */
689: if (sd->spi)
690: goto bad_cmd;
691: switch (sd->mode) {
692: case sd_data_transfer_mode:
693: sd_function_switch(sd, req.arg);
694: sd->state = sd_sendingdata_state;
695: sd->data_start = 0;
696: sd->data_offset = 0;
697: return sd_r1;
698:
699: default:
700: break;
701: }
702: break;
703:
704: case 7: /* CMD7: SELECT/DESELECT_CARD */
705: if (sd->spi)
706: goto bad_cmd;
707: switch (sd->state) {
708: case sd_standby_state:
709: if (sd->rca != rca)
710: return sd_r0;
711:
712: sd->state = sd_transfer_state;
713: return sd_r1b;
714:
715: case sd_transfer_state:
716: case sd_sendingdata_state:
717: if (sd->rca == rca)
718: break;
719:
720: sd->state = sd_standby_state;
721: return sd_r1b;
722:
723: case sd_disconnect_state:
724: if (sd->rca != rca)
725: return sd_r0;
726:
727: sd->state = sd_programming_state;
728: return sd_r1b;
729:
730: case sd_programming_state:
731: if (sd->rca == rca)
732: break;
733:
734: sd->state = sd_disconnect_state;
735: return sd_r1b;
736:
737: default:
738: break;
739: }
740: break;
741:
742: case 8: /* CMD8: SEND_IF_COND */
743: /* Physical Layer Specification Version 2.00 command */
744: switch (sd->state) {
745: case sd_idle_state:
746: sd->vhs = 0;
747:
748: /* No response if not exactly one VHS bit is set. */
749: if (!(req.arg >> 8) || (req.arg >> ffs(req.arg & ~0xff)))
750: return sd->spi ? sd_r7 : sd_r0;
751:
752: /* Accept. */
753: sd->vhs = req.arg;
754: return sd_r7;
755:
756: default:
757: break;
758: }
759: break;
760:
761: case 9: /* CMD9: SEND_CSD */
762: switch (sd->state) {
763: case sd_standby_state:
764: if (sd->rca != rca)
765: return sd_r0;
766:
767: return sd_r2_s;
768:
769: case sd_transfer_state:
770: if (!sd->spi)
771: break;
772: sd->state = sd_sendingdata_state;
773: memcpy(sd->data, sd->csd, 16);
1.1.1.4 root 774: sd->data_start = addr;
1.1 root 775: sd->data_offset = 0;
776: return sd_r1;
777:
778: default:
779: break;
780: }
781: break;
782:
783: case 10: /* CMD10: SEND_CID */
784: switch (sd->state) {
785: case sd_standby_state:
786: if (sd->rca != rca)
787: return sd_r0;
788:
789: return sd_r2_i;
790:
791: case sd_transfer_state:
792: if (!sd->spi)
793: break;
794: sd->state = sd_sendingdata_state;
795: memcpy(sd->data, sd->cid, 16);
1.1.1.4 root 796: sd->data_start = addr;
1.1 root 797: sd->data_offset = 0;
798: return sd_r1;
799:
800: default:
801: break;
802: }
803: break;
804:
805: case 11: /* CMD11: READ_DAT_UNTIL_STOP */
806: if (sd->spi)
807: goto bad_cmd;
808: switch (sd->state) {
809: case sd_transfer_state:
810: sd->state = sd_sendingdata_state;
811: sd->data_start = req.arg;
812: sd->data_offset = 0;
813:
814: if (sd->data_start + sd->blk_len > sd->size)
815: sd->card_status |= ADDRESS_ERROR;
816: return sd_r0;
817:
818: default:
819: break;
820: }
821: break;
822:
823: case 12: /* CMD12: STOP_TRANSMISSION */
824: switch (sd->state) {
825: case sd_sendingdata_state:
826: sd->state = sd_transfer_state;
827: return sd_r1b;
828:
829: case sd_receivingdata_state:
830: sd->state = sd_programming_state;
831: /* Bzzzzzzztt .... Operation complete. */
832: sd->state = sd_transfer_state;
833: return sd_r1b;
834:
835: default:
836: break;
837: }
838: break;
839:
840: case 13: /* CMD13: SEND_STATUS */
841: switch (sd->mode) {
842: case sd_data_transfer_mode:
843: if (sd->rca != rca)
844: return sd_r0;
845:
846: return sd_r1;
847:
848: default:
849: break;
850: }
851: break;
852:
853: case 15: /* CMD15: GO_INACTIVE_STATE */
854: if (sd->spi)
855: goto bad_cmd;
856: switch (sd->mode) {
857: case sd_data_transfer_mode:
858: if (sd->rca != rca)
859: return sd_r0;
860:
861: sd->state = sd_inactive_state;
862: return sd_r0;
863:
864: default:
865: break;
866: }
867: break;
868:
869: /* Block read commands (Classs 2) */
870: case 16: /* CMD16: SET_BLOCKLEN */
871: switch (sd->state) {
872: case sd_transfer_state:
873: if (req.arg > (1 << HWBLOCK_SHIFT))
874: sd->card_status |= BLOCK_LEN_ERROR;
875: else
876: sd->blk_len = req.arg;
877:
878: return sd_r1;
879:
880: default:
881: break;
882: }
883: break;
884:
885: case 17: /* CMD17: READ_SINGLE_BLOCK */
886: switch (sd->state) {
887: case sd_transfer_state:
888: sd->state = sd_sendingdata_state;
1.1.1.4 root 889: sd->data_start = addr;
1.1 root 890: sd->data_offset = 0;
891:
892: if (sd->data_start + sd->blk_len > sd->size)
893: sd->card_status |= ADDRESS_ERROR;
894: return sd_r1;
895:
896: default:
897: break;
898: }
899: break;
900:
901: case 18: /* CMD18: READ_MULTIPLE_BLOCK */
902: switch (sd->state) {
903: case sd_transfer_state:
904: sd->state = sd_sendingdata_state;
1.1.1.4 root 905: sd->data_start = addr;
1.1 root 906: sd->data_offset = 0;
907:
908: if (sd->data_start + sd->blk_len > sd->size)
909: sd->card_status |= ADDRESS_ERROR;
910: return sd_r1;
911:
912: default:
913: break;
914: }
915: break;
916:
917: /* Block write commands (Class 4) */
918: case 24: /* CMD24: WRITE_SINGLE_BLOCK */
919: if (sd->spi)
920: goto unimplemented_cmd;
921: switch (sd->state) {
922: case sd_transfer_state:
923: /* Writing in SPI mode not implemented. */
924: if (sd->spi)
925: break;
926: sd->state = sd_receivingdata_state;
1.1.1.4 root 927: sd->data_start = addr;
1.1 root 928: sd->data_offset = 0;
929: sd->blk_written = 0;
930:
931: if (sd->data_start + sd->blk_len > sd->size)
932: sd->card_status |= ADDRESS_ERROR;
933: if (sd_wp_addr(sd, sd->data_start))
934: sd->card_status |= WP_VIOLATION;
935: if (sd->csd[14] & 0x30)
936: sd->card_status |= WP_VIOLATION;
937: return sd_r1;
938:
939: default:
940: break;
941: }
942: break;
943:
944: case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */
945: if (sd->spi)
946: goto unimplemented_cmd;
947: switch (sd->state) {
948: case sd_transfer_state:
949: /* Writing in SPI mode not implemented. */
950: if (sd->spi)
951: break;
952: sd->state = sd_receivingdata_state;
1.1.1.4 root 953: sd->data_start = addr;
1.1 root 954: sd->data_offset = 0;
955: sd->blk_written = 0;
956:
957: if (sd->data_start + sd->blk_len > sd->size)
958: sd->card_status |= ADDRESS_ERROR;
959: if (sd_wp_addr(sd, sd->data_start))
960: sd->card_status |= WP_VIOLATION;
961: if (sd->csd[14] & 0x30)
962: sd->card_status |= WP_VIOLATION;
963: return sd_r1;
964:
965: default:
966: break;
967: }
968: break;
969:
970: case 26: /* CMD26: PROGRAM_CID */
971: if (sd->spi)
972: goto bad_cmd;
973: switch (sd->state) {
974: case sd_transfer_state:
975: sd->state = sd_receivingdata_state;
976: sd->data_start = 0;
977: sd->data_offset = 0;
978: return sd_r1;
979:
980: default:
981: break;
982: }
983: break;
984:
985: case 27: /* CMD27: PROGRAM_CSD */
986: if (sd->spi)
987: goto unimplemented_cmd;
988: switch (sd->state) {
989: case sd_transfer_state:
990: sd->state = sd_receivingdata_state;
991: sd->data_start = 0;
992: sd->data_offset = 0;
993: return sd_r1;
994:
995: default:
996: break;
997: }
998: break;
999:
1000: /* Write protection (Class 6) */
1001: case 28: /* CMD28: SET_WRITE_PROT */
1002: switch (sd->state) {
1003: case sd_transfer_state:
1.1.1.4 root 1004: if (addr >= sd->size) {
1.1.1.10! root 1005: sd->card_status |= ADDRESS_ERROR;
1.1 root 1006: return sd_r1b;
1007: }
1008:
1009: sd->state = sd_programming_state;
1.1.1.4 root 1010: sd->wp_groups[addr >> (HWBLOCK_SHIFT +
1.1 root 1011: SECTOR_SHIFT + WPGROUP_SHIFT)] = 1;
1012: /* Bzzzzzzztt .... Operation complete. */
1013: sd->state = sd_transfer_state;
1014: return sd_r1b;
1015:
1016: default:
1017: break;
1018: }
1019: break;
1020:
1021: case 29: /* CMD29: CLR_WRITE_PROT */
1022: switch (sd->state) {
1023: case sd_transfer_state:
1.1.1.4 root 1024: if (addr >= sd->size) {
1.1.1.10! root 1025: sd->card_status |= ADDRESS_ERROR;
1.1 root 1026: return sd_r1b;
1027: }
1028:
1029: sd->state = sd_programming_state;
1.1.1.4 root 1030: sd->wp_groups[addr >> (HWBLOCK_SHIFT +
1.1 root 1031: SECTOR_SHIFT + WPGROUP_SHIFT)] = 0;
1032: /* Bzzzzzzztt .... Operation complete. */
1033: sd->state = sd_transfer_state;
1034: return sd_r1b;
1035:
1036: default:
1037: break;
1038: }
1039: break;
1040:
1041: case 30: /* CMD30: SEND_WRITE_PROT */
1042: switch (sd->state) {
1043: case sd_transfer_state:
1044: sd->state = sd_sendingdata_state;
1045: *(uint32_t *) sd->data = sd_wpbits(sd, req.arg);
1.1.1.4 root 1046: sd->data_start = addr;
1.1 root 1047: sd->data_offset = 0;
1048: return sd_r1b;
1049:
1050: default:
1051: break;
1052: }
1053: break;
1054:
1055: /* Erase commands (Class 5) */
1056: case 32: /* CMD32: ERASE_WR_BLK_START */
1057: switch (sd->state) {
1058: case sd_transfer_state:
1059: sd->erase_start = req.arg;
1060: return sd_r1;
1061:
1062: default:
1063: break;
1064: }
1065: break;
1066:
1067: case 33: /* CMD33: ERASE_WR_BLK_END */
1068: switch (sd->state) {
1069: case sd_transfer_state:
1070: sd->erase_end = req.arg;
1071: return sd_r1;
1072:
1073: default:
1074: break;
1075: }
1076: break;
1077:
1078: case 38: /* CMD38: ERASE */
1079: switch (sd->state) {
1080: case sd_transfer_state:
1081: if (sd->csd[14] & 0x30) {
1082: sd->card_status |= WP_VIOLATION;
1083: return sd_r1b;
1084: }
1085:
1086: sd->state = sd_programming_state;
1087: sd_erase(sd);
1088: /* Bzzzzzzztt .... Operation complete. */
1089: sd->state = sd_transfer_state;
1090: return sd_r1b;
1091:
1092: default:
1093: break;
1094: }
1095: break;
1096:
1097: /* Lock card commands (Class 7) */
1098: case 42: /* CMD42: LOCK_UNLOCK */
1099: if (sd->spi)
1100: goto unimplemented_cmd;
1101: switch (sd->state) {
1102: case sd_transfer_state:
1103: sd->state = sd_receivingdata_state;
1104: sd->data_start = 0;
1105: sd->data_offset = 0;
1106: return sd_r1;
1107:
1108: default:
1109: break;
1110: }
1111: break;
1112:
1.1.1.8 root 1113: case 52:
1114: case 53:
1115: /* CMD52, CMD53: reserved for SDIO cards
1116: * (see the SDIO Simplified Specification V2.0)
1117: * Handle as illegal command but do not complain
1118: * on stderr, as some OSes may use these in their
1119: * probing for presence of an SDIO card.
1120: */
1.1.1.10! root 1121: return sd_illegal;
1.1.1.8 root 1122:
1.1 root 1123: /* Application specific commands (Class 8) */
1124: case 55: /* CMD55: APP_CMD */
1125: if (sd->rca != rca)
1126: return sd_r0;
1127:
1.1.1.10! root 1128: sd->expecting_acmd = 1;
1.1 root 1129: sd->card_status |= APP_CMD;
1130: return sd_r1;
1131:
1132: case 56: /* CMD56: GEN_CMD */
1.1.1.2 root 1133: fprintf(stderr, "SD: GEN_CMD 0x%08x\n", req.arg);
1.1 root 1134:
1135: switch (sd->state) {
1136: case sd_transfer_state:
1137: sd->data_offset = 0;
1138: if (req.arg & 1)
1139: sd->state = sd_sendingdata_state;
1140: else
1141: sd->state = sd_receivingdata_state;
1142: return sd_r1;
1143:
1144: default:
1145: break;
1146: }
1147: break;
1148:
1149: default:
1150: bad_cmd:
1.1.1.2 root 1151: fprintf(stderr, "SD: Unknown CMD%i\n", req.cmd);
1.1.1.10! root 1152: return sd_illegal;
1.1 root 1153:
1154: unimplemented_cmd:
1155: /* Commands that are recognised but not yet implemented in SPI mode. */
1.1.1.2 root 1156: fprintf(stderr, "SD: CMD%i not implemented in SPI mode\n", req.cmd);
1.1.1.10! root 1157: return sd_illegal;
1.1 root 1158: }
1159:
1.1.1.2 root 1160: fprintf(stderr, "SD: CMD%i in a wrong state\n", req.cmd);
1.1.1.10! root 1161: return sd_illegal;
1.1 root 1162: }
1163:
1164: static sd_rsp_type_t sd_app_command(SDState *sd,
1.1.1.5 root 1165: SDRequest req)
1166: {
1.1 root 1167: DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg);
1.1.1.10! root 1168: sd->card_status |= APP_CMD;
1.1 root 1169: switch (req.cmd) {
1170: case 6: /* ACMD6: SET_BUS_WIDTH */
1171: switch (sd->state) {
1172: case sd_transfer_state:
1173: sd->sd_status[0] &= 0x3f;
1174: sd->sd_status[0] |= (req.arg & 0x03) << 6;
1175: return sd_r1;
1176:
1177: default:
1178: break;
1179: }
1180: break;
1181:
1182: case 13: /* ACMD13: SD_STATUS */
1183: switch (sd->state) {
1184: case sd_transfer_state:
1.1.1.7 root 1185: sd->state = sd_sendingdata_state;
1.1 root 1186: sd->data_start = 0;
1187: sd->data_offset = 0;
1188: return sd_r1;
1189:
1190: default:
1191: break;
1192: }
1193: break;
1194:
1195: case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */
1196: switch (sd->state) {
1197: case sd_transfer_state:
1198: *(uint32_t *) sd->data = sd->blk_written;
1199:
1.1.1.7 root 1200: sd->state = sd_sendingdata_state;
1.1 root 1201: sd->data_start = 0;
1202: sd->data_offset = 0;
1203: return sd_r1;
1204:
1205: default:
1206: break;
1207: }
1208: break;
1209:
1210: case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */
1211: switch (sd->state) {
1212: case sd_transfer_state:
1213: return sd_r1;
1214:
1215: default:
1216: break;
1217: }
1218: break;
1219:
1220: case 41: /* ACMD41: SD_APP_OP_COND */
1221: if (sd->spi) {
1222: /* SEND_OP_CMD */
1223: sd->state = sd_transfer_state;
1224: return sd_r1;
1225: }
1226: switch (sd->state) {
1227: case sd_idle_state:
1228: /* We accept any voltage. 10000 V is nothing. */
1229: if (req.arg)
1230: sd->state = sd_ready_state;
1231:
1232: return sd_r3;
1233:
1234: default:
1235: break;
1236: }
1237: break;
1238:
1239: case 42: /* ACMD42: SET_CLR_CARD_DETECT */
1240: switch (sd->state) {
1241: case sd_transfer_state:
1242: /* Bringing in the 50KOhm pull-up resistor... Done. */
1243: return sd_r1;
1244:
1245: default:
1246: break;
1247: }
1248: break;
1249:
1250: case 51: /* ACMD51: SEND_SCR */
1251: switch (sd->state) {
1252: case sd_transfer_state:
1253: sd->state = sd_sendingdata_state;
1254: sd->data_start = 0;
1255: sd->data_offset = 0;
1256: return sd_r1;
1257:
1258: default:
1259: break;
1260: }
1261: break;
1262:
1263: default:
1264: /* Fall back to standard commands. */
1265: return sd_normal_command(sd, req);
1266: }
1267:
1.1.1.2 root 1268: fprintf(stderr, "SD: ACMD%i in a wrong state\n", req.cmd);
1.1.1.10! root 1269: return sd_illegal;
! 1270: }
! 1271:
! 1272: static int cmd_valid_while_locked(SDState *sd, SDRequest *req)
! 1273: {
! 1274: /* Valid commands in locked state:
! 1275: * basic class (0)
! 1276: * lock card class (7)
! 1277: * CMD16
! 1278: * implicitly, the ACMD prefix CMD55
! 1279: * ACMD41 and ACMD42
! 1280: * Anything else provokes an "illegal command" response.
! 1281: */
! 1282: if (sd->expecting_acmd) {
! 1283: return req->cmd == 41 || req->cmd == 42;
! 1284: }
! 1285: if (req->cmd == 16 || req->cmd == 55) {
! 1286: return 1;
! 1287: }
! 1288: return sd_cmd_class[req->cmd] == 0 || sd_cmd_class[req->cmd] == 7;
1.1 root 1289: }
1290:
1.1.1.3 root 1291: int sd_do_command(SDState *sd, SDRequest *req,
1.1 root 1292: uint8_t *response) {
1.1.1.10! root 1293: int last_state;
1.1 root 1294: sd_rsp_type_t rtype;
1295: int rsplen;
1296:
1.1.1.3 root 1297: if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) {
1.1 root 1298: return 0;
1299: }
1300:
1301: if (sd_req_crc_validate(req)) {
1.1.1.10! root 1302: sd->card_status |= COM_CRC_ERROR;
! 1303: rtype = sd_illegal;
! 1304: goto send_response;
1.1 root 1305: }
1306:
1.1.1.10! root 1307: if (sd->card_status & CARD_IS_LOCKED) {
! 1308: if (!cmd_valid_while_locked(sd, req)) {
1.1 root 1309: sd->card_status |= ILLEGAL_COMMAND;
1.1.1.10! root 1310: sd->expecting_acmd = 0;
1.1.1.2 root 1311: fprintf(stderr, "SD: Card is locked\n");
1.1.1.10! root 1312: rtype = sd_illegal;
! 1313: goto send_response;
1.1 root 1314: }
1.1.1.10! root 1315: }
! 1316:
! 1317: last_state = sd->state;
! 1318: sd_set_mode(sd);
1.1 root 1319:
1.1.1.10! root 1320: if (sd->expecting_acmd) {
! 1321: sd->expecting_acmd = 0;
1.1 root 1322: rtype = sd_app_command(sd, *req);
1.1.1.10! root 1323: } else {
1.1 root 1324: rtype = sd_normal_command(sd, *req);
1.1.1.10! root 1325: }
1.1 root 1326:
1.1.1.10! root 1327: if (rtype == sd_illegal) {
! 1328: sd->card_status |= ILLEGAL_COMMAND;
! 1329: } else {
! 1330: /* Valid command, we can update the 'state before command' bits.
! 1331: * (Do this now so they appear in r1 responses.)
! 1332: */
! 1333: sd->current_cmd = req->cmd;
! 1334: sd->card_status &= ~CURRENT_STATE;
! 1335: sd->card_status |= (last_state << 9);
! 1336: }
1.1 root 1337:
1.1.1.10! root 1338: send_response:
1.1 root 1339: switch (rtype) {
1340: case sd_r1:
1341: case sd_r1b:
1.1.1.10! root 1342: sd_response_r1_make(sd, response);
1.1 root 1343: rsplen = 4;
1344: break;
1345:
1346: case sd_r2_i:
1347: memcpy(response, sd->cid, sizeof(sd->cid));
1348: rsplen = 16;
1349: break;
1350:
1351: case sd_r2_s:
1352: memcpy(response, sd->csd, sizeof(sd->csd));
1353: rsplen = 16;
1354: break;
1355:
1356: case sd_r3:
1357: sd_response_r3_make(sd, response);
1358: rsplen = 4;
1359: break;
1360:
1361: case sd_r6:
1362: sd_response_r6_make(sd, response);
1363: rsplen = 4;
1364: break;
1365:
1366: case sd_r7:
1367: sd_response_r7_make(sd, response);
1368: rsplen = 4;
1369: break;
1370:
1371: case sd_r0:
1.1.1.10! root 1372: case sd_illegal:
1.1 root 1373: default:
1374: rsplen = 0;
1375: break;
1376: }
1377:
1.1.1.10! root 1378: if (rtype != sd_illegal) {
! 1379: /* Clear the "clear on valid command" status bits now we've
! 1380: * sent any response
! 1381: */
! 1382: sd->card_status &= ~CARD_STATUS_B;
! 1383: }
1.1 root 1384:
1385: #ifdef DEBUG_SD
1386: if (rsplen) {
1387: int i;
1388: DPRINTF("Response:");
1389: for (i = 0; i < rsplen; i++)
1390: printf(" %02x", response[i]);
1391: printf(" state %d\n", sd->state);
1392: } else {
1393: DPRINTF("No response %d\n", sd->state);
1394: }
1395: #endif
1396:
1397: return rsplen;
1398: }
1399:
1.1.1.4 root 1400: static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
1.1 root 1401: {
1.1.1.4 root 1402: uint64_t end = addr + len;
1.1 root 1403:
1.1.1.4 root 1404: DPRINTF("sd_blk_read: addr = 0x%08llx, len = %d\n",
1405: (unsigned long long) addr, len);
1.1 root 1406: if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) == -1) {
1.1.1.2 root 1407: fprintf(stderr, "sd_blk_read: read error on host side\n");
1.1 root 1408: return;
1409: }
1410:
1411: if (end > (addr & ~511) + 512) {
1412: memcpy(sd->data, sd->buf + (addr & 511), 512 - (addr & 511));
1413:
1414: if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) == -1) {
1.1.1.2 root 1415: fprintf(stderr, "sd_blk_read: read error on host side\n");
1.1 root 1416: return;
1417: }
1418: memcpy(sd->data + 512 - (addr & 511), sd->buf, end & 511);
1419: } else
1420: memcpy(sd->data, sd->buf + (addr & 511), len);
1421: }
1422:
1.1.1.4 root 1423: static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len)
1.1 root 1424: {
1.1.1.4 root 1425: uint64_t end = addr + len;
1.1 root 1426:
1427: if ((addr & 511) || len < 512)
1428: if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) == -1) {
1.1.1.2 root 1429: fprintf(stderr, "sd_blk_write: read error on host side\n");
1.1 root 1430: return;
1431: }
1432:
1433: if (end > (addr & ~511) + 512) {
1434: memcpy(sd->buf + (addr & 511), sd->data, 512 - (addr & 511));
1435: if (bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) == -1) {
1.1.1.2 root 1436: fprintf(stderr, "sd_blk_write: write error on host side\n");
1.1 root 1437: return;
1438: }
1439:
1440: if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) == -1) {
1.1.1.2 root 1441: fprintf(stderr, "sd_blk_write: read error on host side\n");
1.1 root 1442: return;
1443: }
1444: memcpy(sd->buf, sd->data + 512 - (addr & 511), end & 511);
1445: if (bdrv_write(sd->bdrv, end >> 9, sd->buf, 1) == -1)
1.1.1.2 root 1446: fprintf(stderr, "sd_blk_write: write error on host side\n");
1.1 root 1447: } else {
1448: memcpy(sd->buf + (addr & 511), sd->data, len);
1449: if (!sd->bdrv || bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) == -1)
1.1.1.2 root 1450: fprintf(stderr, "sd_blk_write: write error on host side\n");
1.1 root 1451: }
1452: }
1453:
1454: #define BLK_READ_BLOCK(a, len) sd_blk_read(sd, a, len)
1455: #define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd, a, len)
1456: #define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len)
1457: #define APP_WRITE_BLOCK(a, len)
1458:
1459: void sd_write_data(SDState *sd, uint8_t value)
1460: {
1461: int i;
1462:
1.1.1.2 root 1463: if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
1.1 root 1464: return;
1465:
1466: if (sd->state != sd_receivingdata_state) {
1.1.1.2 root 1467: fprintf(stderr, "sd_write_data: not in Receiving-Data state\n");
1.1 root 1468: return;
1469: }
1470:
1471: if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
1472: return;
1473:
1474: switch (sd->current_cmd) {
1475: case 24: /* CMD24: WRITE_SINGLE_BLOCK */
1476: sd->data[sd->data_offset ++] = value;
1477: if (sd->data_offset >= sd->blk_len) {
1478: /* TODO: Check CRC before committing */
1479: sd->state = sd_programming_state;
1480: BLK_WRITE_BLOCK(sd->data_start, sd->data_offset);
1481: sd->blk_written ++;
1482: sd->csd[14] |= 0x40;
1483: /* Bzzzzzzztt .... Operation complete. */
1484: sd->state = sd_transfer_state;
1485: }
1486: break;
1487:
1488: case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */
1.1.1.9 root 1489: if (sd->data_offset == 0) {
1490: /* Start of the block - lets check the address is valid */
1.1 root 1491: if (sd->data_start + sd->blk_len > sd->size) {
1492: sd->card_status |= ADDRESS_ERROR;
1493: break;
1494: }
1495: if (sd_wp_addr(sd, sd->data_start)) {
1496: sd->card_status |= WP_VIOLATION;
1497: break;
1498: }
1.1.1.9 root 1499: }
1500: sd->data[sd->data_offset++] = value;
1501: if (sd->data_offset >= sd->blk_len) {
1502: /* TODO: Check CRC before committing */
1503: sd->state = sd_programming_state;
1504: BLK_WRITE_BLOCK(sd->data_start, sd->data_offset);
1505: sd->blk_written++;
1506: sd->data_start += sd->blk_len;
1507: sd->data_offset = 0;
1.1 root 1508: sd->csd[14] |= 0x40;
1509:
1510: /* Bzzzzzzztt .... Operation complete. */
1511: sd->state = sd_receivingdata_state;
1512: }
1513: break;
1514:
1515: case 26: /* CMD26: PROGRAM_CID */
1516: sd->data[sd->data_offset ++] = value;
1517: if (sd->data_offset >= sizeof(sd->cid)) {
1518: /* TODO: Check CRC before committing */
1519: sd->state = sd_programming_state;
1520: for (i = 0; i < sizeof(sd->cid); i ++)
1521: if ((sd->cid[i] | 0x00) != sd->data[i])
1522: sd->card_status |= CID_CSD_OVERWRITE;
1523:
1524: if (!(sd->card_status & CID_CSD_OVERWRITE))
1525: for (i = 0; i < sizeof(sd->cid); i ++) {
1526: sd->cid[i] |= 0x00;
1527: sd->cid[i] &= sd->data[i];
1528: }
1529: /* Bzzzzzzztt .... Operation complete. */
1530: sd->state = sd_transfer_state;
1531: }
1532: break;
1533:
1534: case 27: /* CMD27: PROGRAM_CSD */
1535: sd->data[sd->data_offset ++] = value;
1536: if (sd->data_offset >= sizeof(sd->csd)) {
1537: /* TODO: Check CRC before committing */
1538: sd->state = sd_programming_state;
1539: for (i = 0; i < sizeof(sd->csd); i ++)
1540: if ((sd->csd[i] | sd_csd_rw_mask[i]) !=
1541: (sd->data[i] | sd_csd_rw_mask[i]))
1542: sd->card_status |= CID_CSD_OVERWRITE;
1543:
1544: /* Copy flag (OTP) & Permanent write protect */
1545: if (sd->csd[14] & ~sd->data[14] & 0x60)
1546: sd->card_status |= CID_CSD_OVERWRITE;
1547:
1548: if (!(sd->card_status & CID_CSD_OVERWRITE))
1549: for (i = 0; i < sizeof(sd->csd); i ++) {
1550: sd->csd[i] |= sd_csd_rw_mask[i];
1551: sd->csd[i] &= sd->data[i];
1552: }
1553: /* Bzzzzzzztt .... Operation complete. */
1554: sd->state = sd_transfer_state;
1555: }
1556: break;
1557:
1558: case 42: /* CMD42: LOCK_UNLOCK */
1559: sd->data[sd->data_offset ++] = value;
1560: if (sd->data_offset >= sd->blk_len) {
1561: /* TODO: Check CRC before committing */
1562: sd->state = sd_programming_state;
1563: sd_lock_command(sd);
1564: /* Bzzzzzzztt .... Operation complete. */
1565: sd->state = sd_transfer_state;
1566: }
1567: break;
1568:
1569: case 56: /* CMD56: GEN_CMD */
1570: sd->data[sd->data_offset ++] = value;
1571: if (sd->data_offset >= sd->blk_len) {
1572: APP_WRITE_BLOCK(sd->data_start, sd->data_offset);
1573: sd->state = sd_transfer_state;
1574: }
1575: break;
1576:
1577: default:
1.1.1.2 root 1578: fprintf(stderr, "sd_write_data: unknown command\n");
1.1 root 1579: break;
1580: }
1581: }
1582:
1583: uint8_t sd_read_data(SDState *sd)
1584: {
1585: /* TODO: Append CRCs */
1586: uint8_t ret;
1.1.1.4 root 1587: int io_len;
1.1 root 1588:
1.1.1.2 root 1589: if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
1.1 root 1590: return 0x00;
1591:
1592: if (sd->state != sd_sendingdata_state) {
1.1.1.2 root 1593: fprintf(stderr, "sd_read_data: not in Sending-Data state\n");
1.1 root 1594: return 0x00;
1595: }
1596:
1597: if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
1598: return 0x00;
1599:
1.1.1.4 root 1600: io_len = (sd->ocr & (1 << 30)) ? 512 : sd->blk_len;
1601:
1.1 root 1602: switch (sd->current_cmd) {
1603: case 6: /* CMD6: SWITCH_FUNCTION */
1604: ret = sd->data[sd->data_offset ++];
1605:
1606: if (sd->data_offset >= 64)
1607: sd->state = sd_transfer_state;
1608: break;
1609:
1610: case 9: /* CMD9: SEND_CSD */
1611: case 10: /* CMD10: SEND_CID */
1612: ret = sd->data[sd->data_offset ++];
1613:
1614: if (sd->data_offset >= 16)
1615: sd->state = sd_transfer_state;
1616: break;
1617:
1618: case 11: /* CMD11: READ_DAT_UNTIL_STOP */
1619: if (sd->data_offset == 0)
1.1.1.4 root 1620: BLK_READ_BLOCK(sd->data_start, io_len);
1.1 root 1621: ret = sd->data[sd->data_offset ++];
1622:
1.1.1.4 root 1623: if (sd->data_offset >= io_len) {
1624: sd->data_start += io_len;
1.1 root 1625: sd->data_offset = 0;
1.1.1.4 root 1626: if (sd->data_start + io_len > sd->size) {
1.1 root 1627: sd->card_status |= ADDRESS_ERROR;
1628: break;
1629: }
1630: }
1631: break;
1632:
1633: case 13: /* ACMD13: SD_STATUS */
1634: ret = sd->sd_status[sd->data_offset ++];
1635:
1636: if (sd->data_offset >= sizeof(sd->sd_status))
1637: sd->state = sd_transfer_state;
1638: break;
1639:
1640: case 17: /* CMD17: READ_SINGLE_BLOCK */
1641: if (sd->data_offset == 0)
1.1.1.4 root 1642: BLK_READ_BLOCK(sd->data_start, io_len);
1.1 root 1643: ret = sd->data[sd->data_offset ++];
1644:
1.1.1.4 root 1645: if (sd->data_offset >= io_len)
1.1 root 1646: sd->state = sd_transfer_state;
1647: break;
1648:
1649: case 18: /* CMD18: READ_MULTIPLE_BLOCK */
1650: if (sd->data_offset == 0)
1.1.1.4 root 1651: BLK_READ_BLOCK(sd->data_start, io_len);
1.1 root 1652: ret = sd->data[sd->data_offset ++];
1653:
1.1.1.4 root 1654: if (sd->data_offset >= io_len) {
1655: sd->data_start += io_len;
1.1 root 1656: sd->data_offset = 0;
1.1.1.4 root 1657: if (sd->data_start + io_len > sd->size) {
1.1 root 1658: sd->card_status |= ADDRESS_ERROR;
1659: break;
1660: }
1661: }
1662: break;
1663:
1664: case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */
1665: ret = sd->data[sd->data_offset ++];
1666:
1667: if (sd->data_offset >= 4)
1668: sd->state = sd_transfer_state;
1669: break;
1670:
1671: case 30: /* CMD30: SEND_WRITE_PROT */
1672: ret = sd->data[sd->data_offset ++];
1673:
1674: if (sd->data_offset >= 4)
1675: sd->state = sd_transfer_state;
1676: break;
1677:
1678: case 51: /* ACMD51: SEND_SCR */
1679: ret = sd->scr[sd->data_offset ++];
1680:
1681: if (sd->data_offset >= sizeof(sd->scr))
1682: sd->state = sd_transfer_state;
1683: break;
1684:
1685: case 56: /* CMD56: GEN_CMD */
1686: if (sd->data_offset == 0)
1687: APP_READ_BLOCK(sd->data_start, sd->blk_len);
1688: ret = sd->data[sd->data_offset ++];
1689:
1690: if (sd->data_offset >= sd->blk_len)
1691: sd->state = sd_transfer_state;
1692: break;
1693:
1694: default:
1.1.1.2 root 1695: fprintf(stderr, "sd_read_data: unknown command\n");
1.1 root 1696: return 0x00;
1697: }
1698:
1699: return ret;
1700: }
1701:
1702: int sd_data_ready(SDState *sd)
1703: {
1704: return sd->state == sd_sendingdata_state;
1705: }
1.1.1.2 root 1706:
1707: void sd_enable(SDState *sd, int enable)
1708: {
1709: sd->enable = enable;
1710: }
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