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source: rtems/c/src/libchip/i2c/spi-sd-card.c @ ccec63e

4.104.114.95

Last change on this file since ccec63e was dccd351, checked in by Joel Sherrill <joel.sherrill@…>, on 08/20/08 at 17:30:07

2008-08-20 Sebastian Huber <sebastian.huber@…>

libchip/i2c/spi-sd-card.c: Fixed integer conversion warnings.

Property mode set to 100644

File size: 33.3 KB

Line
1	/**
2	* @file
3	*
4	* @brief SD Card LibI2C driver.
5	*/
6
7	/*
8	* Copyright (c) 2008
9	* Embedded Brains GmbH
10	* Obere Lagerstr. 30
11	* D-82178 Puchheim
12	* Germany
13	* rtems@embedded-brains.de
14	*
15	* The license and distribution terms for this file may be found in the file
16	* LICENSE in this distribution or at http://www.rtems.com/license/LICENSE.
17	*/
18
19	#include <stdio.h>
20	#include <errno.h>
21	#include <inttypes.h>
22
23	#include <rtems.h>
24	#include <rtems/libi2c.h>
25	#include <rtems/libio.h>
26	#include <rtems/diskdevs.h>
27
28	#include <libchip/spi-sd-card.h>
29
30	#include <rtems/status-checks.h>
31
32	/**
33	* @name Integer to and from Byte-Stream Converter
34	* @{
35	*/
36
37	static inline uint16_t sd_card_get_uint16( const uint8_t *s)
38	{
39	return (uint16_t) ((s [0] << 8) \| s [1]);
40	}
41
42	static inline uint32_t sd_card_get_uint32( const uint8_t *s)
43	{
44	return ((uint32_t) s [0] << 24) \| ((uint32_t) s [1] << 16) \| ((uint32_t) s [2] << 8) \| (uint32_t) s [3];
45	}
46
47	static inline void sd_card_put_uint16( uint16_t v, uint8_t *s)
48	{
49	*s++ = (uint8_t) (v >> 8);
50	*s = (uint8_t) (v);
51	}
52
53	static inline void sd_card_put_uint32( uint32_t v, uint8_t *s)
54	{
55	*s++ = (uint8_t) (v >> 24);
56	*s++ = (uint8_t) (v >> 16);
57	*s++ = (uint8_t) (v >> 8);
58	*s = (uint8_t) (v);
59	}
60
61	/** @} */
62
63	#define SD_CARD_BUSY_TOKEN 0
64
65	#define SD_CARD_BLOCK_SIZE_DEFAULT 512
66
67	#define SD_CARD_COMMAND_RESPONSE_START 7
68
69	/**
70	* @name Commands
71	* @{
72	*/
73
74	#define SD_CARD_CMD_GO_IDLE_STATE 0
75	#define SD_CARD_CMD_SEND_OP_COND 1
76	#define SD_CARD_CMD_SEND_CSD 9
77	#define SD_CARD_CMD_SEND_CID 10
78	#define SD_CARD_CMD_STOP_TRANSMISSION 12
79	#define SD_CARD_CMD_SEND_STATUS 13
80	#define SD_CARD_CMD_SET_BLOCKLEN 16
81	#define SD_CARD_CMD_READ_SINGLE_BLOCK 17
82	#define SD_CARD_CMD_READ_MULTIPLE_BLOCK 18
83	#define SD_CARD_CMD_SET_BLOCK_COUNT 23
84	#define SD_CARD_CMD_WRITE_BLOCK 24
85	#define SD_CARD_CMD_WRITE_MULTIPLE_BLOCK 25
86	#define SD_CARD_CMD_PROGRAM_CSD 27
87	#define SD_CARD_CMD_SET_WRITE_PROT 28
88	#define SD_CARD_CMD_CLR_WRITE_PROT 29
89	#define SD_CARD_CMD_SEND_WRITE_PROT 30
90	#define SD_CARD_CMD_TAG_SECTOR_START 32
91	#define SD_CARD_CMD_TAG_SECTOR_END 33
92	#define SD_CARD_CMD_UNTAG_SECTOR 34
93	#define SD_CARD_CMD_TAG_ERASE_GROUP_START 35
94	#define SD_CARD_CMD_TAG_ERASE_GROUP_END 36
95	#define SD_CARD_CMD_UNTAG_ERASE_GROUP 37
96	#define SD_CARD_CMD_ERASE 38
97	#define SD_CARD_CMD_LOCK_UNLOCK 42
98	#define SD_CARD_CMD_APP_CMD 55
99	#define SD_CARD_CMD_GEN_CND 56
100	#define SD_CARD_CMD_READ_OCR 58
101	#define SD_CARD_CMD_CRC_ON_OFF 59
102
103	/** @} */
104
105	/**
106	* @name Application Commands
107	* @{
108	*/
109
110	#define SD_CARD_ACMD_SD_SEND_OP_COND 41
111
112	/** @} */
113
114	/**
115	* @name Command Fields
116	* @{
117	*/
118
119	#define SD_CARD_COMMAND_SET_COMMAND( c, cmd) (c) [1] = (uint8_t) (0x40 + ((cmd) & 0x3f))
120	#define SD_CARD_COMMAND_SET_ARGUMENT( c, arg) sd_card_put_uint32( (arg), &((c) [2]))
121	#define SD_CARD_COMMAND_SET_CRC7( c, crc7) ((c) [6] = (crc7) << 1)
122
123	#define SD_CARD_COMMAND_GET_CRC7( c) ((c) [6] >> 1)
124
125	/** @} */
126
127	/**
128	* @name Response Fields
129	* @{
130	*/
131
132	#define SD_CARD_IS_RESPONSE( r) (((r) & 0x80) == 0)
133
134	#define SD_CARD_IS_ERRORLESS_RESPONSE( r) (((r) & 0x7e) == 0)
135
136	#define SD_CARD_IS_NOT_IDLE_RESPONSE( r) (((r) & 0x81) == 0)
137
138	#define SD_CARD_IS_DATA_ERROR( r) (((r) & 0xe0) == 0)
139
140	#define SD_CARD_IS_DATA_REJECTED( r) (((r) & 0x1f) != 0x05)
141
142	/** @} */
143
144	/**
145	* @name Card Identification
146	* @{
147	*/
148
149	#define SD_CARD_CID_SIZE 16
150
151	#define SD_CARD_CID_GET_MID( cid) ((cid) [0])
152	#define SD_CARD_CID_GET_OID( cid) sd_card_get_uint16( cid + 1)
153	#define SD_CARD_CID_GET_PNM( cid, i) ((char) (cid) [3 + (i)])
154	#define SD_CARD_CID_GET_PRV( cid) ((cid) [9])
155	#define SD_CARD_CID_GET_PSN( cid) sd_card_get_uint32( cid + 10)
156	#define SD_CARD_CID_GET_MDT( cid) ((cid) [14])
157	#define SD_CARD_CID_GET_CRC7( cid) ((cid) [15] >> 1)
158
159	/** @} */
160
161	/**
162	* @name Card Specific Data
163	* @{
164	*/
165
166	#define SD_CARD_CSD_SIZE 16
167
168	#define SD_CARD_CSD_GET_CSD_STRUCTURE( csd) ((csd) [0] >> 6)
169	#define SD_CARD_CSD_GET_SPEC_VERS( csd) (((csd) [0] >> 2) & 0xf)
170	#define SD_CARD_CSD_GET_TAAC( csd) ((csd) [1])
171	#define SD_CARD_CSD_GET_NSAC( csd) ((uint32_t) (csd) [2])
172	#define SD_CARD_CSD_GET_TRAN_SPEED( csd) ((csd) [3])
173	#define SD_CARD_CSD_GET_C_SIZE( csd) ((((uint32_t) (csd) [6] & 0x3) << 10) + ((uint32_t) (csd) [7] << 2) + (((uint32_t) (csd) [8] >> 6) & 0x3))
174	#define SD_CARD_CSD_GET_C_SIZE_MULT( csd) ((((csd) [9] & 0x3) << 1) + (((csd) [10] >> 7) & 0x1))
175	#define SD_CARD_CSD_GET_READ_BLK_LEN( csd) ((uint32_t) (csd) [5] & 0xf)
176	#define SD_CARD_CSD_GET_WRITE_BLK_LEN( csd) ((((csd) [12] & 0x3) << 2) + (((csd) [13] >> 6) & 0x3))
177
178	/** @} */
179
180	#define SD_CARD_INVALIDATE_RESPONSE_INDEX( e) e->response_index = SD_CARD_COMMAND_SIZE
181
182	/**
183	* @name Data Start and Stop Tokens
184	* @{
185	*/
186
187	#define SD_CARD_START_BLOCK_SINGLE_BLOCK_READ 0xfe
188	#define SD_CARD_START_BLOCK_MULTIPLE_BLOCK_READ 0xfe
189	#define SD_CARD_START_BLOCK_SINGLE_BLOCK_WRITE 0xfe
190	#define SD_CARD_START_BLOCK_MULTIPLE_BLOCK_WRITE 0xfc
191	#define SD_CARD_STOP_TRANSFER_MULTIPLE_BLOCK_WRITE 0xfd
192
193	/** @} */
194
195	/**
196	* @name Card Specific Data Functions
197	* @{
198	*/
199
200	static inline uint32_t sd_card_block_number( const uint8_t *csd)
201	{
202	uint32_t size = SD_CARD_CSD_GET_C_SIZE( csd);
203	uint32_t mult = 1U << (SD_CARD_CSD_GET_C_SIZE_MULT( csd) + 2);
204	return (size + 1) * mult;
205	}
206
207	static inline uint32_t sd_card_capacity( const uint8_t *csd)
208	{
209	uint32_t block_size = 1U << SD_CARD_CSD_GET_READ_BLK_LEN( csd);
210	return sd_card_block_number( csd) * block_size;
211	}
212
213	static inline uint32_t sd_card_transfer_speed( const uint8_t *csd)
214	{
215	uint32_t s = SD_CARD_CSD_GET_TRAN_SPEED( csd);
216	uint32_t e = s & 0x7;
217	uint32_t m = s >> 3;
218	switch (e) {
219	case 0: s = 10000; break;
220	case 1: s = 100000; break;
221	case 2: s = 1000000; break;
222	case 3: s = 10000000; break;
223	default: s = 0; break;
224	}
225	switch (m) {
226	case 1: s *= 10; break;
227	case 2: s *= 12; break;
228	case 3: s *= 13; break;
229	case 4: s *= 15; break;
230	case 5: s *= 20; break;
231	case 6: s *= 25; break;
232	case 7: s *= 30; break;
233	case 8: s *= 35; break;
234	case 9: s *= 40; break;
235	case 10: s *= 45; break;
236	case 11: s *= 50; break;
237	case 12: s *= 55; break;
238	case 13: s *= 60; break;
239	case 14: s *= 70; break;
240	case 15: s *= 80; break;
241	default: s *= 0; break;
242	}
243	return s;
244	}
245
246	static inline uint32_t sd_card_access_time( const uint8_t *csd)
247	{
248	uint32_t ac = SD_CARD_CSD_GET_TAAC( csd);
249	uint32_t e = ac & 0x7;
250	uint32_t m = ac >> 3;
251	switch (e) {
252	case 0: ac = 1; break;
253	case 1: ac = 10; break;
254	case 2: ac = 100; break;
255	case 3: ac = 1000; break;
256	case 4: ac = 10000; break;
257	case 5: ac = 100000; break;
258	case 6: ac = 1000000; break;
259	case 7: ac = 10000000; break;
260	default: ac = 0; break;
261	}
262	switch (m) {
263	case 1: ac *= 10; break;
264	case 2: ac *= 12; break;
265	case 3: ac *= 13; break;
266	case 4: ac *= 15; break;
267	case 5: ac *= 20; break;
268	case 6: ac *= 25; break;
269	case 7: ac *= 30; break;
270	case 8: ac *= 35; break;
271	case 9: ac *= 40; break;
272	case 10: ac *= 45; break;
273	case 11: ac *= 50; break;
274	case 12: ac *= 55; break;
275	case 13: ac *= 60; break;
276	case 14: ac *= 70; break;
277	case 15: ac *= 80; break;
278	default: ac *= 0; break;
279	}
280	return ac / 10;
281	}
282
283	static inline uint32_t sd_card_max_access_time( const uint8_t *csd, uint32_t transfer_speed)
284	{
285	uint64_t ac = sd_card_access_time( csd);
286	uint32_t n = SD_CARD_CSD_GET_NSAC( csd) * 100;
287	ac = (ac * transfer_speed) / 8000000000ULL;
288	return n + (uint32_t) ac;
289	}
290
291	/** @} */
292
293	/**
294	* @name Communication Functions
295	* @{
296	*/
297
298	static inline int sd_card_query( sd_card_driver_entry e, uint8_t in, int n)
299	{
300	return rtems_libi2c_read_bytes( e->minor, in, n);
301	}
302
303	static int sd_card_wait( sd_card_driver_entry *e)
304	{
305	int rv = 0;
306	int r = 0;
307	int n = 2;
308	while (e->busy) {
309	/* Query busy tokens */
310	rv = sd_card_query( e, e->response, n);
311	CHECK_RV( rv, "Busy");
312
313	/* Search for non busy tokens */
314	for (r = 0; r < n; ++r) {
315	if (e->response [r] != SD_CARD_BUSY_TOKEN) {
316	e->busy = false;
317	return 0;
318	}
319	}
320	n = SD_CARD_COMMAND_SIZE;
321
322	if (e->schedule_if_busy) {
323	/* Invoke the scheduler */
324	rtems_task_wake_after( RTEMS_YIELD_PROCESSOR);
325	}
326	}
327	return 0;
328	}
329
330	static int sd_card_send_command( sd_card_driver_entry *e, uint32_t command, uint32_t argument)
331	{
332	int rv = 0;
333	rtems_libi2c_read_write_t rw = {
334	.rd_buf = e->response,
335	.wr_buf = e->command,
336	.byte_cnt = SD_CARD_COMMAND_SIZE
337	};
338	int r = 0;
339
340	SD_CARD_INVALIDATE_RESPONSE_INDEX( e);
341
342	/* Wait until card is not busy */
343	rv = sd_card_wait( e);
344	CHECK_RV( rv, "Wait");
345
346	/* Write command and read response */
347	SD_CARD_COMMAND_SET_COMMAND( e->command, command);
348	SD_CARD_COMMAND_SET_ARGUMENT( e->command, argument);
349	rv = rtems_libi2c_ioctl( e->minor, RTEMS_LIBI2C_IOCTL_READ_WRITE, &rw);
350	CHECK_RV( rv, "Write command and read response");
351
352	/* Check respose */
353	for (r = SD_CARD_COMMAND_RESPONSE_START; r < SD_CARD_COMMAND_SIZE; ++r) {
354	DEBUG_PRINT( "Token [%02u]: 0x%02x\n", r, e->response [r]);
355	e->response_index = r;
356	if (SD_CARD_IS_RESPONSE( e->response [r])) {
357	if (SD_CARD_IS_ERRORLESS_RESPONSE( e->response [r])) {
358	return 0;
359	} else {
360	SYSLOG_ERROR( "Command error [%02i]: 0x%02" PRIx8 "\n", r, e->response [r]);
361	goto sd_card_send_command_error;
362	}
363	} else if (e->response [r] != SD_CARD_IDLE_TOKEN) {
364	SYSLOG_ERROR( "Unexpected token [%02i]: 0x%02" PRIx8 "\n", r, e->response [r]);
365	goto sd_card_send_command_error;
366	}
367	}
368
369	SYSLOG_ERROR( "Timeout\n");
370
371	sd_card_send_command_error:
372
373	SYSLOG_ERROR( "Response:");
374	for (r = 0; r < SD_CARD_COMMAND_SIZE; ++r) {
375	if (e->response_index == r) {
376	SYSLOG_PRINT( " %02" PRIx8 ":[%02" PRIx8 "]", e->command [r], e->response [r]);
377	} else {
378	SYSLOG_PRINT( " %02" PRIx8 ":%02" PRIx8 "", e->command [r], e->response [r]);
379	}
380	}
381	SYSLOG_PRINT( "\n");
382
383	return -RTEMS_IO_ERROR;
384	}
385
386	static int sd_card_stop_multiple_block_read( sd_card_driver_entry *e)
387	{
388	int rv = 0;
389
390	SD_CARD_COMMAND_SET_COMMAND( e->command, SD_CARD_CMD_STOP_TRANSMISSION);
391	rv = rtems_libi2c_write_bytes( e->minor, e->command, SD_CARD_COMMAND_SIZE);
392	CHECK_RV( rv, "Write stop transfer token");
393
394	return 0;
395	}
396
397	static int sd_card_stop_multiple_block_write( sd_card_driver_entry *e)
398	{
399	int rv = 0;
400	uint8_t stop_transfer [3] = { SD_CARD_IDLE_TOKEN, SD_CARD_STOP_TRANSFER_MULTIPLE_BLOCK_WRITE, SD_CARD_IDLE_TOKEN };
401
402	/* Wait until card is not busy */
403	rv = sd_card_wait( e);
404	CHECK_RV( rv, "Wait");
405
406	/* Send stop token */
407	rv = rtems_libi2c_write_bytes( e->minor, stop_transfer, 3);
408	CHECK_RV( rv, "Write stop transfer token");
409
410	/* Card is now busy */
411	e->busy = true;
412
413	return 0;
414	}
415
416	static int sd_card_read( sd_card_driver_entry e, uint8_t start_token, uint8_t in, int n)
417	{
418	int rv = 0;
419
420	/* Access time idle tokens */
421	uint32_t n_ac = 1;
422
423	/* Discard command response */
424	int r = e->response_index + 1;
425
426	/* Minimum token number before data start */
427	int next_response_size = 2;
428
429	/* Standard response size */
430	int response_size = SD_CARD_COMMAND_SIZE;
431
432	/* Data input index */
433	int i = 0;
434
435	SD_CARD_INVALIDATE_RESPONSE_INDEX( e);
436
437	while (1) {
438	DEBUG_PRINT( "Search from %u to %u\n", r, response_size - 1);
439
440	/* Search the data start token in in current response buffer */
441	while (r < response_size) {
442	DEBUG_PRINT( "Token [%02u]: 0x%02x\n", r, e->response [r]);
443	if (n_ac > e->n_ac_max) {
444	SYSLOG_ERROR( "Timeout\n");
445	return -RTEMS_IO_ERROR;
446	} else if (e->response [r] == start_token) {
447	/* Discard data start token */
448	++r;
449	goto sd_card_read_start;
450	} else if (SD_CARD_IS_DATA_ERROR( e->response [r])) {
451	SYSLOG_ERROR( "Data error token [%02i]: 0x%02" PRIx8 "\n", r, e->response [r]);
452	return -RTEMS_IO_ERROR;
453	} else if (e->response [r] != SD_CARD_IDLE_TOKEN) {
454	SYSLOG_ERROR( "Unexpected token [%02i]: 0x%02" PRIx8 "\n", r, e->response [r]);
455	return -RTEMS_IO_ERROR;
456	}
457	++n_ac;
458	++r;
459	}
460
461	/* Query more */
462	rv = sd_card_query( e, e->response, next_response_size);
463	CHECK_RV( rv, "Query data start token");
464
465	/* Set standard query size */
466	response_size = next_response_size;
467	next_response_size = SD_CARD_COMMAND_SIZE;
468
469	/* Reset start position */
470	r = 0;
471	}
472
473	sd_card_read_start:
474
475	/* Read data */
476	while (r < response_size && i < n) {
477	in [i++] = e->response [r++];
478	}
479
480	/* Read more data? */
481	if (i < n) {
482	rv = sd_card_query( e, &in [i], n - i);
483	CHECK_RV( rv, "Read data");
484	i += rv;
485	}
486
487	/* Read CRC 16 and N_RC */
488	rv = sd_card_query( e, e->response, 3);
489	CHECK_RV( rv, "Read CRC 16");
490
491	return i;
492	}
493
494	static int sd_card_write( sd_card_driver_entry e, uint8_t start_token, uint8_t out, int n)
495	{
496	int rv = 0;
497	uint8_t crc16 [2] = { 0, 0 };
498
499	/* Data output index */
500	int o = 0;
501
502	/* Wait until card is not busy */
503	rv = sd_card_wait( e);
504	CHECK_RV( rv, "Wait");
505
506	/* Write data start token */
507	rv = rtems_libi2c_write_bytes( e->minor, &start_token, 1);
508	CHECK_RV( rv, "Write data start token");
509
510	/* Write data */
511	o = rtems_libi2c_write_bytes( e->minor, out, n);
512	CHECK_RV( o, "Write data");
513
514	/* Write CRC 16 */
515	rv = rtems_libi2c_write_bytes( e->minor, crc16, 2);
516	CHECK_RV( rv, "Write CRC 16");
517
518	/* Read data response */
519	rv = sd_card_query( e, e->response, 2);
520	CHECK_RV( rv, "Read data response");
521	if (SD_CARD_IS_DATA_REJECTED( e->response [0])) {
522	SYSLOG_ERROR( "Data rejected: 0x%02" PRIx8 "\n", e->response [0]);
523	return -RTEMS_IO_ERROR;
524	}
525
526	/* Card is now busy */
527	e->busy = true;
528
529	return o;
530	}
531
532	static inline rtems_status_code sd_card_start( sd_card_driver_entry *e)
533	{
534	rtems_status_code sc = RTEMS_SUCCESSFUL;
535	int rv = 0;
536
537	sc = rtems_libi2c_send_start( e->minor);
538	CHECK_SC( sc, "Send start");
539
540	rv = rtems_libi2c_ioctl( e->minor, RTEMS_LIBI2C_IOCTL_SET_TFRMODE, &e->transfer_mode);
541	CHECK_RVSC( rv, "Set transfer mode");
542
543	sc = rtems_libi2c_send_addr( e->minor, 1);
544	CHECK_SC( sc, "Send address");
545
546	return RTEMS_SUCCESSFUL;
547	}
548
549	static inline rtems_status_code sd_card_stop( sd_card_driver_entry *e)
550	{
551	rtems_status_code sc = RTEMS_SUCCESSFUL;
552
553	sc = rtems_libi2c_send_stop( e->minor);
554	CHECK_SC( sc, "Send stop");
555
556	return RTEMS_SUCCESSFUL;
557	}
558	/** @} */
559
560	/**
561	* @name Disk Driver Functions
562	* @{
563	*/
564
565	static int sd_card_disk_block_read( sd_card_driver_entry e, rtems_blkdev_request r)
566	{
567	rtems_status_code sc = RTEMS_SUCCESSFUL;
568	int rv = 0;
569	uint32_t start_address = RTEMS_BLKDEV_START_BLOCK (r) << e->block_size_shift;
570	uint32_t i = 0;
571
572	DEBUG_PRINT( "start = %u, bufnum = %u\n", r->start, r->bufnum);
573
574	#ifdef DEBUG
575	/* Check request */
576	if (r->bufs[0].block >= e->block_number) {
577	SYSLOG_ERROR( "Start block number out of range");
578	return -RTEMS_INTERNAL_ERROR;
579	} else if (r->bufnum > e->block_number - RTEMS_BLKDEV_START_BLOCK (r)) {
580	SYSLOG_ERROR( "Block count out of range");
581	return -RTEMS_INTERNAL_ERROR;
582	}
583	#endif /* DEBUG */
584
585	/* Start */
586	sc = sd_card_start( e);
587	CLEANUP_SCRV( sc, rv, sd_card_disk_block_read_cleanup, "Start");
588
589	if (r->bufnum == 1) {
590	#ifdef DEBUG
591	/* Check buffer */
592	if (r->bufs [0].length != e->block_size) {
593	DO_CLEANUP_RV( -RTEMS_INTERNAL_ERROR, rv, sd_card_disk_block_read_cleanup, "Buffer and disk block size are not equal");
594	}
595	DEBUG_PRINT( "[%02u]: buffer = 0x%08x, size = %u\n", 0, r->bufs [0].buffer, r->bufs [0].length);
596	#endif /* DEBUG */
597
598	/* Single block read */
599	rv = sd_card_send_command( e, SD_CARD_CMD_READ_SINGLE_BLOCK, start_address);
600	CLEANUP_RV( rv, sd_card_disk_block_read_cleanup, "Send: SD_CARD_CMD_READ_SINGLE_BLOCK");
601	rv = sd_card_read( e, SD_CARD_START_BLOCK_SINGLE_BLOCK_READ, (uint8_t *) r->bufs [0].buffer, (int) e->block_size);
602	CLEANUP_RV( rv, sd_card_disk_block_read_cleanup, "Read: SD_CARD_CMD_READ_SINGLE_BLOCK");
603	} else {
604	/* Start multiple block read */
605	rv = sd_card_send_command( e, SD_CARD_CMD_READ_MULTIPLE_BLOCK, start_address);
606	CLEANUP_RV( rv, sd_card_disk_block_read_stop_cleanup, "Send: SD_CARD_CMD_READ_MULTIPLE_BLOCK");
607
608	/* Multiple block read */
609	for (i = 0; i < r->bufnum; ++i) {
610	#ifdef DEBUG
611	/* Check buffer */
612	if (r->bufs [i].length != e->block_size) {
613	DO_CLEANUP_RV( -RTEMS_INTERNAL_ERROR, rv, sd_card_disk_block_read_stop_cleanup, "Buffer and disk block size are not equal");
614	}
615	DEBUG_PRINT( "[%02u]: buffer = 0x%08x, size = %u\n", i, r->bufs [i].buffer, r->bufs [i].length);
616	#endif /* DEBUG */
617
618	rv = sd_card_read( e, SD_CARD_START_BLOCK_MULTIPLE_BLOCK_READ, (uint8_t *) r->bufs [i].buffer, (int) e->block_size);
619	CLEANUP_RV( rv, sd_card_disk_block_read_stop_cleanup, "Read block");
620	}
621
622	/* Stop multiple block read */
623	rv = sd_card_stop_multiple_block_read( e);
624	CLEANUP_RV( rv, sd_card_disk_block_read_cleanup, "Stop multiple block read");
625	}
626
627	/* Stop */
628	sc = sd_card_stop( e);
629	CHECK_SCRV( sc, "Stop");
630
631	/* Done */
632	r->req_done( r->done_arg, RTEMS_SUCCESSFUL, 0);
633
634	return 0;
635
636	sd_card_disk_block_read_stop_cleanup:
637
638	/* Stop multiple block read */
639	sd_card_stop_multiple_block_read( e);
640
641	sd_card_disk_block_read_cleanup:
642
643	/* Stop */
644	sd_card_stop( e);
645
646	/* Done */
647	r->req_done( r->done_arg, RTEMS_IO_ERROR, 0);
648
649	return rv;
650	}
651
652	static int sd_card_disk_block_write( sd_card_driver_entry e, rtems_blkdev_request r)
653	{
654	rtems_status_code sc = RTEMS_SUCCESSFUL;
655	int rv = 0;
656	uint32_t start_address = RTEMS_BLKDEV_START_BLOCK (r) << e->block_size_shift;
657	uint32_t i = 0;
658
659	DEBUG_PRINT( "start = %u, count = %u, bufnum = %u\n", r->start, r->count, r->bufnum);
660
661	#ifdef DEBUG
662	/* Check request */
663	if (r->bufs[0].block >= e->block_number) {
664	SYSLOG_ERROR( "Start block number out of range");
665	return -RTEMS_INTERNAL_ERROR;
666	} else if (r->bufnum > e->block_number - RTEMS_BLKDEV_START_BLOCK (r)) {
667	SYSLOG_ERROR( "Block count out of range");
668	return -RTEMS_INTERNAL_ERROR;
669	}
670	#endif /* DEBUG */
671
672	/* Start */
673	sc = sd_card_start( e);
674	CLEANUP_SCRV( sc, rv, sd_card_disk_block_write_cleanup, "Start");
675
676	if (r->bufnum == 1) {
677	#ifdef DEBUG
678	/* Check buffer */
679	if (r->bufs [0].length != e->block_size) {
680	DO_CLEANUP_RV( -RTEMS_INTERNAL_ERROR, rv, sd_card_disk_block_write_cleanup, "Buffer and disk block size are not equal");
681	}
682	DEBUG_PRINT( "[%02u]: buffer = 0x%08x, size = %u\n", 0, r->bufs [0].buffer, r->bufs [0].length);
683	#endif /* DEBUG */
684
685	/* Single block write */
686	rv = sd_card_send_command( e, SD_CARD_CMD_WRITE_BLOCK, start_address);
687	CLEANUP_RV( rv, sd_card_disk_block_write_cleanup, "Send: SD_CARD_CMD_WRITE_BLOCK");
688	rv = sd_card_write( e, SD_CARD_START_BLOCK_SINGLE_BLOCK_WRITE, (uint8_t *) r->bufs [0].buffer, (int) e->block_size);
689	CLEANUP_RV( rv, sd_card_disk_block_write_cleanup, "Write: SD_CARD_CMD_WRITE_BLOCK");
690	} else {
691	/* Start multiple block write */
692	rv = sd_card_send_command( e, SD_CARD_CMD_WRITE_MULTIPLE_BLOCK, start_address);
693	CLEANUP_RV( rv, sd_card_disk_block_write_stop_cleanup, "Send: SD_CARD_CMD_WRITE_MULTIPLE_BLOCK");
694
695	/* Multiple block write */
696	for (i = 0; i < r->bufnum; ++i) {
697	#ifdef DEBUG
698	/* Check buffer */
699	if (r->bufs [i].length != e->block_size) {
700	DO_CLEANUP_RV( -RTEMS_INTERNAL_ERROR, rv, sd_card_disk_block_write_stop_cleanup, "Buffer and disk block size are not equal");
701	}
702	DEBUG_PRINT( "[%02u]: buffer = 0x%08x, size = %u\n", i, r->bufs [i].buffer, r->bufs [i].length);
703	#endif /* DEBUG */
704
705	rv = sd_card_write( e, SD_CARD_START_BLOCK_MULTIPLE_BLOCK_WRITE, (uint8_t *) r->bufs [i].buffer, (int) e->block_size);
706	CLEANUP_RV( rv, sd_card_disk_block_write_stop_cleanup, "Write block");
707	}
708
709	/* Stop multiple block write */
710	rv = sd_card_stop_multiple_block_write( e);
711	CLEANUP_RV( rv, sd_card_disk_block_write_cleanup, "Stop multiple block write");
712	}
713
714	/* Get card status */
715	rv = sd_card_send_command( e, SD_CARD_CMD_SEND_STATUS, 0);
716	CHECK_RV( rv, "Send: SD_CARD_CMD_SEND_STATUS");
717
718	/* Stop */
719	sc = sd_card_stop( e);
720	CHECK_SCRV( sc, "Stop");
721
722	/* Done */
723	r->req_done( r->done_arg, RTEMS_SUCCESSFUL, 0);
724
725	return 0;
726
727	sd_card_disk_block_write_stop_cleanup:
728
729	/* Stop multiple block write */
730	sd_card_stop_multiple_block_write( e);
731
732	sd_card_disk_block_write_cleanup:
733
734	/* Get card status */
735	rv = sd_card_send_command( e, SD_CARD_CMD_SEND_STATUS, 0);
736	CHECK_RV( rv, "Send: SD_CARD_CMD_SEND_STATUS");
737
738	/* Stop */
739	sd_card_stop( e);
740
741	/* Done */
742	r->req_done( r->done_arg, RTEMS_IO_ERROR, 0);
743
744	return rv;
745	}
746
747	static int sd_card_disk_ioctl( dev_t dev, uint32_t req, void *arg)
748	{
749	DEBUG_PRINT( "dev = %u, req = %u, arg = 0x08%x\n", dev, req, arg);
750	if (req == RTEMS_BLKIO_REQUEST) {
751	rtems_device_minor_number minor = rtems_filesystem_dev_minor_t( dev);
752	sd_card_driver_entry *e = &sd_card_driver_table [minor];
753	rtems_blkdev_request r = (rtems_blkdev_request ) arg;
754	switch (r->req) {
755	case RTEMS_BLKDEV_REQ_READ:
756	return sd_card_disk_block_read( e, r);
757	case RTEMS_BLKDEV_REQ_WRITE:
758	return sd_card_disk_block_write( e, r);
759	case RTEMS_BLKDEV_CAPABILITIES:
760	((uint32_t) arg) = RTEMS_BLKDEV_CAP_MULTISECTOR_CONT;
761	return 0;
762	default:
763	errno = EBADRQC;
764	return -1;
765	}
766	} else {
767	errno = EBADRQC;
768	return -1;
769	}
770	}
771
772	static rtems_status_code sd_card_disk_init( rtems_device_major_number major, rtems_device_minor_number minor, void *arg)
773	{
774	/* Do nothing */
775
776	return RTEMS_SUCCESSFUL;
777	}
778
779	/** @} */
780
781	static const rtems_driver_address_table sd_card_disk_ops = {
782	.initialization_entry = sd_card_disk_init,
783	.open_entry = NULL,
784	.close_entry = NULL,
785	.read_entry = NULL,
786	.write_entry = NULL,
787	.control_entry = NULL
788	};
789
790	static rtems_device_major_number sd_card_disk_major = 0;
791
792	static int sd_card_driver_first = 1;
793
794	/**
795	* @name LibI2C Driver Functions
796	* @{
797	*/
798
799	static inline int sd_card_driver_get_entry( rtems_device_minor_number minor, sd_card_driver_entry **e)
800	{
801	return rtems_libi2c_ioctl( minor, RTEMS_LIBI2C_IOCTL_GET_DRV_T, e);
802	}
803
804	static rtems_status_code sd_card_driver_init( rtems_device_major_number major, rtems_device_minor_number minor, void *arg)
805	{
806	rtems_status_code sc = RTEMS_SUCCESSFUL;
807	int rv = 0;
808	sd_card_driver_entry *e = NULL;
809	uint8_t block [SD_CARD_BLOCK_SIZE_DEFAULT];
810	uint32_t transfer_speed = 0;
811	uint32_t read_block_size = 0;
812	uint32_t write_block_size = 0;
813	dev_t dev = 0;
814
815	/* Get driver entry */
816	rv = sd_card_driver_get_entry( minor, &e);
817	CHECK_RVSC( rv, "Get driver entry");
818
819	/* Start */
820	sc = sd_card_start( e);
821	CLEANUP_SC( sc, sd_card_driver_init_cleanup, "Start");
822
823	/* Save minor number for disk operations */
824	e->minor = minor;
825
826	/* Register disk driver */
827	if (sd_card_driver_first) {
828	sd_card_driver_first = 0;
829	sc = rtems_io_register_driver( 0, &sd_card_disk_ops, &sd_card_disk_major);
830	CLEANUP_SC( sc, sd_card_driver_init_cleanup, "Register disk IO driver");
831	}
832
833	/* Wait until card is not busy */
834	rv = sd_card_wait( e);
835	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Wait");
836
837	/* Send idle tokens for at least 74 clock cycles with active chip select */
838	memset( block, SD_CARD_IDLE_TOKEN, SD_CARD_BLOCK_SIZE_DEFAULT);
839	rv = rtems_libi2c_write_bytes( e->minor, block, SD_CARD_BLOCK_SIZE_DEFAULT);
840	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Active chip select delay");
841
842	/* Stop */
843	sc = sd_card_stop( e);
844	CHECK_SC( sc, "Stop");
845
846	/* Start with inactive chip select */
847	sc = rtems_libi2c_send_start( e->minor);
848	CHECK_SC( sc, "Send start");
849
850	/* Set transfer mode */
851	rv = rtems_libi2c_ioctl( e->minor, RTEMS_LIBI2C_IOCTL_SET_TFRMODE, &e->transfer_mode);
852	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Set transfer mode");
853
854	/* Send idle tokens with inactive chip select */
855	rv = sd_card_query( e, e->response, SD_CARD_COMMAND_SIZE);
856	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Inactive chip select delay");
857
858	/* Activate chip select */
859	sc = rtems_libi2c_send_addr( e->minor, 1);
860	CLEANUP_SC( sc, sd_card_driver_init_cleanup, "Send address");
861
862	/* Stop multiple block write */
863	sd_card_stop_multiple_block_write( e);
864
865	/* Get card status */
866	sd_card_send_command( e, SD_CARD_CMD_SEND_STATUS, 0);
867
868	/* Stop multiple block read */
869	sd_card_stop_multiple_block_read( e);
870
871	/* Switch to SPI mode */
872	rv = sd_card_send_command( e, SD_CARD_CMD_GO_IDLE_STATE, 0);
873	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Send: SD_CARD_CMD_GO_IDLE_STATE");
874
875	/* Initialize card */
876	while (1) {
877	rv = sd_card_send_command( e, SD_CARD_CMD_APP_CMD, 0);
878	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Send: SD_CARD_CMD_APP_CMD");
879	rv = sd_card_send_command( e, SD_CARD_ACMD_SD_SEND_OP_COND, 0);
880	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Send: SD_CARD_ACMD_SD_SEND_OP_COND");
881
882	/* Not idle? */
883	if (SD_CARD_IS_NOT_IDLE_RESPONSE( e->response [e->response_index])) {
884	break;
885	}
886
887	/* Invoke the scheduler */
888	rtems_task_wake_after( RTEMS_YIELD_PROCESSOR);
889	};
890
891	/* Card Identification */
892	if (e->verbose) {
893	rv = sd_card_send_command( e, SD_CARD_CMD_SEND_CID, 0);
894	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Send: SD_CARD_CMD_SEND_CID");
895	rv = sd_card_read( e, SD_CARD_START_BLOCK_SINGLE_BLOCK_READ, block, SD_CARD_CID_SIZE);
896	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Read: SD_CARD_CMD_SEND_CID");
897	SYSLOG( "* Card Identification *\n");
898	SYSLOG( "Manufacturer ID : %" PRIu8 "\n", SD_CARD_CID_GET_MID( block));
899	SYSLOG( "OEM/Application ID : %" PRIu16 "\n", SD_CARD_CID_GET_OID( block));
900	SYSLOG(
901	"Product name : %c%c%c%c%c%c\n",
902	SD_CARD_CID_GET_PNM( block, 0),
903	SD_CARD_CID_GET_PNM( block, 1),
904	SD_CARD_CID_GET_PNM( block, 2),
905	SD_CARD_CID_GET_PNM( block, 3),
906	SD_CARD_CID_GET_PNM( block, 4),
907	SD_CARD_CID_GET_PNM( block, 5)
908	);
909	SYSLOG( "Product revision : %" PRIu8 "\n", SD_CARD_CID_GET_PRV( block));
910	SYSLOG( "Product serial number : %" PRIu32 "\n", SD_CARD_CID_GET_PSN( block));
911	SYSLOG( "Manufacturing date : %" PRIu8 "\n", SD_CARD_CID_GET_MDT( block));
912	SYSLOG( "7-bit CRC checksum : %" PRIu8 "\n", SD_CARD_CID_GET_CRC7( block));
913	}
914
915	/* Card Specific Data */
916	rv = sd_card_send_command( e, SD_CARD_CMD_SEND_CSD, 0);
917	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Send: SD_CARD_CMD_SEND_CSD");
918	rv = sd_card_read( e, SD_CARD_START_BLOCK_SINGLE_BLOCK_READ, block, SD_CARD_CSD_SIZE);
919	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Read: SD_CARD_CMD_SEND_CSD");
920	transfer_speed = sd_card_transfer_speed( block);
921	e->transfer_mode.baudrate = transfer_speed;
922	e->n_ac_max = sd_card_max_access_time( block, transfer_speed);
923	read_block_size = 1U << SD_CARD_CSD_GET_READ_BLK_LEN( block);
924	e->block_size_shift = SD_CARD_CSD_GET_READ_BLK_LEN( block);
925	write_block_size = 1U << e->block_size_shift;
926	if (read_block_size < write_block_size) {
927	SYSLOG_ERROR( "Read block size smaller than write block size\n");
928	return -RTEMS_IO_ERROR;
929	}
930	e->block_size = write_block_size;
931	e->block_number = sd_card_block_number( block);
932	if (e->verbose) {
933	SYSLOG( "* Card Specific Data *\n");
934	SYSLOG( "CSD structure : %" PRIu8 "\n", SD_CARD_CSD_GET_CSD_STRUCTURE( block));
935	SYSLOG( "Spec version : %" PRIu8 "\n", SD_CARD_CSD_GET_SPEC_VERS( block));
936	SYSLOG( "Access time [ns] : %" PRIu32 "\n", sd_card_access_time( block));
937	SYSLOG( "Max access time [N] : %" PRIu32 "\n", e->n_ac_max);
938	SYSLOG( "Max read block size [B] : %" PRIu32 "\n", read_block_size);
939	SYSLOG( "Max write block size [B] : %" PRIu32 "\n", write_block_size);
940	SYSLOG( "Block size [B] : %" PRIu32 "\n", e->block_size);
941	SYSLOG( "Block number : %" PRIu32 "\n", e->block_number);
942	SYSLOG( "Capacity [B] : %" PRIu32 "\n", sd_card_capacity( block));
943	SYSLOG( "Max transfer speed [b/s] : %" PRIu32 "\n", transfer_speed);
944	}
945
946	/* Set read block size */
947	rv = sd_card_send_command( e, SD_CARD_CMD_SET_BLOCKLEN, e->block_size);
948	CLEANUP_RVSC( rv, sc, sd_card_driver_init_cleanup, "Send: SD_CARD_CMD_SET_BLOCKLEN");
949
950	/* Create disk device */
951	dev = rtems_filesystem_make_dev_t( sd_card_disk_major, (rtems_device_minor_number) e->table_index);
952	sc = rtems_disk_io_initialize();
953	CLEANUP_SC( sc, sd_card_driver_init_cleanup, "Initialize RTEMS disk IO");
954	sc = rtems_disk_create_phys( dev, (int) e->block_size, (int) e->block_number, sd_card_disk_ioctl, e->disk_device_name);
955	CLEANUP_SC( sc, sd_card_driver_init_cleanup, "Create disk device");
956
957	/* Stop */
958	sc = sd_card_stop( e);
959	CHECK_SC( sc, "Stop");
960
961	return RTEMS_SUCCESSFUL;
962
963	sd_card_driver_init_cleanup:
964
965	/* Stop */
966	sd_card_stop( e);
967
968	return sc;
969	}
970
971	static rtems_status_code sd_card_driver_read( rtems_device_major_number major, rtems_device_minor_number minor, void *arg)
972	{
973	rtems_status_code sc = RTEMS_SUCCESSFUL;
974	int rv = 0;
975	rtems_libio_rw_args_t rw = (rtems_libio_rw_args_t ) arg;
976	sd_card_driver_entry *e = NULL;
977	uint32_t block_size_mask = 0;
978	uint32_t block_count = 0;
979	uint32_t start_block = 0;
980	uint32_t i = 0;
981
982	/* Clear moved bytes counter */
983	rw->bytes_moved = 0;
984
985	/* Get driver entry */
986	rv = sd_card_driver_get_entry( minor, &e);
987	CHECK_RVSC( rv, "Get driver entry");
988
989	/* Start */
990	sc = sd_card_start( e);
991	CLEANUP_SC( sc, sd_card_driver_read_cleanup, "Start");
992
993	/* Check arguments */
994	block_size_mask = e->block_size - 1;
995	block_count = (uint32_t) rw->count >> e->block_size_shift;
996	start_block = (uint32_t) rw->offset >> e->block_size_shift;
997	if (rw->offset & block_size_mask) {
998	DO_CLEANUP_SC( RTEMS_INVALID_ADDRESS, sc, sd_card_driver_read_cleanup, "Invalid offset");
999	} else if ((rw->count & block_size_mask) \|\| (start_block >= e->block_number) \|\| (block_count > e->block_number - start_block)) {
1000	DO_CLEANUP_SC( RTEMS_INVALID_NUMBER, sc, sd_card_driver_read_cleanup, "Invalid count or out of range");
1001	}
1002
1003	if (block_count == 0) {
1004	/* Do nothing */
1005	} else if (block_count == 1) {
1006	/* Single block read */
1007	rv = sd_card_send_command( e, SD_CARD_CMD_READ_SINGLE_BLOCK, (uint32_t) rw->offset);
1008	CLEANUP_RVSC( rv, sc, sd_card_driver_read_cleanup, "Send: SD_CARD_CMD_READ_SINGLE_BLOCK");
1009	rv = sd_card_read( e, SD_CARD_START_BLOCK_SINGLE_BLOCK_READ, (uint8_t *) rw->buffer, (int) e->block_size);
1010	CLEANUP_RVSC( rv, sc, sd_card_driver_read_cleanup, "Read: SD_CARD_CMD_READ_SINGLE_BLOCK");
1011
1012	/* Set moved bytes counter */
1013	rw->bytes_moved = (uint32_t) rv;
1014	} else {
1015	/* Start multiple block read */
1016	rv = sd_card_send_command( e, SD_CARD_CMD_READ_MULTIPLE_BLOCK, (uint32_t) rw->offset);
1017	CLEANUP_RVSC( rv, sc, sd_card_driver_read_stop_cleanup, "Send: SD_CARD_CMD_READ_MULTIPLE_BLOCK");
1018
1019	/* Multiple block read */
1020	for (i = 0; i < block_count; ++i) {
1021	rv = sd_card_read( e, SD_CARD_START_BLOCK_MULTIPLE_BLOCK_READ, (uint8_t *) rw->buffer + (i << e->block_size_shift), (int) e->block_size);
1022	CLEANUP_RVSC( rv, sc, sd_card_driver_read_stop_cleanup, "Read block");
1023
1024	/* Update moved bytes counter */
1025	rw->bytes_moved += (uint32_t) rv;
1026	}
1027
1028	/* Stop multiple block read */
1029	rv = sd_card_stop_multiple_block_read( e);
1030	CLEANUP_RVSC( rv, sc, sd_card_driver_read_cleanup, "Stop multiple block read");
1031	}
1032
1033	/* Stop */
1034	sc = sd_card_stop( e);
1035	CHECK_SC( sc, "Stop");
1036
1037	return RTEMS_SUCCESSFUL;
1038
1039	sd_card_driver_read_stop_cleanup:
1040
1041	/* Stop multiple block read */
1042	sd_card_stop_multiple_block_read( e);
1043
1044	sd_card_driver_read_cleanup:
1045
1046	/* Stop */
1047	sd_card_stop( e);
1048
1049	return sc;
1050	}
1051
1052	static rtems_status_code sd_card_driver_write( rtems_device_major_number major, rtems_device_minor_number minor, void *arg)
1053	{
1054	rtems_status_code sc = RTEMS_SUCCESSFUL;
1055	int rv = 0;
1056	rtems_libio_rw_args_t rw = (rtems_libio_rw_args_t ) arg;
1057	sd_card_driver_entry *e = NULL;
1058	uint32_t block_size_mask = 0;
1059	uint32_t block_count = 0;
1060	uint32_t start_block = 0;
1061	uint32_t i = 0;
1062
1063	/* Clear moved bytes counter */
1064	rw->bytes_moved = 0;
1065
1066	/* Get driver entry */
1067	rv = sd_card_driver_get_entry( minor, &e);
1068	CHECK_RVSC( rv, "Get driver entry");
1069
1070	/* Start */
1071	sc = sd_card_start( e);
1072	CLEANUP_SC( sc, sd_card_driver_write_cleanup, "Start");
1073
1074	/* Check arguments */
1075	block_size_mask = e->block_size - 1;
1076	block_count = (uint32_t) rw->count >> e->block_size_shift;
1077	start_block = (uint32_t) rw->offset >> e->block_size_shift;
1078	if (rw->offset & block_size_mask) {
1079	DO_CLEANUP_SC( RTEMS_INVALID_ADDRESS, sc, sd_card_driver_write_cleanup, "Invalid offset");
1080	} else if ((rw->count & block_size_mask) \|\| (start_block >= e->block_number) \|\| (block_count > e->block_number - start_block)) {
1081	DO_CLEANUP_SC( RTEMS_INVALID_NUMBER, sc, sd_card_driver_write_cleanup, "Invalid count or out of range");
1082	}
1083
1084	if (block_count == 0) {
1085	/* Do nothing */
1086	} else if (block_count == 1) {
1087	/* Single block write */
1088	rv = sd_card_send_command( e, SD_CARD_CMD_WRITE_BLOCK, (uint32_t) rw->offset);
1089	CLEANUP_RVSC( rv, sc, sd_card_driver_write_cleanup, "Send: SD_CARD_CMD_WRITE_BLOCK");
1090	rv = sd_card_write( e, SD_CARD_START_BLOCK_SINGLE_BLOCK_WRITE, (uint8_t *) rw->buffer, (int) e->block_size);
1091	CLEANUP_RVSC( rv, sc, sd_card_driver_write_cleanup, "Write: SD_CARD_CMD_WRITE_BLOCK");
1092
1093	/* Set moved bytes counter */
1094	rw->bytes_moved = (uint32_t) rv;
1095	} else {
1096	/* Start multiple block write */
1097	rv = sd_card_send_command( e, SD_CARD_CMD_WRITE_MULTIPLE_BLOCK, (uint32_t) rw->offset);
1098	CLEANUP_RVSC( rv, sc, sd_card_driver_write_stop_cleanup, "Send: SD_CARD_CMD_WRITE_MULTIPLE_BLOCK");
1099
1100	/* Multiple block write */
1101	for (i = 0; i < block_count; ++i) {
1102	rv = sd_card_write( e, SD_CARD_START_BLOCK_MULTIPLE_BLOCK_WRITE, (uint8_t *) rw->buffer + (i << e->block_size_shift), (int) e->block_size);
1103	CLEANUP_RVSC( rv, sc, sd_card_driver_write_stop_cleanup, "Write: SD_CARD_CMD_WRITE_MULTIPLE_BLOCK");
1104
1105	/* Update moved bytes counter */
1106	rw->bytes_moved += (uint32_t) rv;
1107	}
1108
1109	/* Stop multiple block write */
1110	rv = sd_card_stop_multiple_block_write( e);
1111	CLEANUP_RVSC( rv, sc, sd_card_driver_write_cleanup, "Stop multiple block write");
1112	}
1113
1114	/* Get card status */
1115	rv = sd_card_send_command( e, SD_CARD_CMD_SEND_STATUS, 0);
1116	CHECK_RV( rv, "Send: SD_CARD_CMD_SEND_STATUS");
1117
1118	/* Stop */
1119	sc = sd_card_stop( e);
1120	CHECK_SC( sc, "Stop");
1121
1122	return RTEMS_SUCCESSFUL;
1123
1124	sd_card_driver_write_stop_cleanup:
1125
1126	/* Stop multiple block write */
1127	sd_card_stop_multiple_block_write( e);
1128
1129	sd_card_driver_write_cleanup:
1130
1131	/* Get card status */
1132	rv = sd_card_send_command( e, SD_CARD_CMD_SEND_STATUS, 0);
1133	CHECK_RV( rv, "Send: SD_CARD_CMD_SEND_STATUS");
1134
1135	/* Stop */
1136	sd_card_stop( e);
1137
1138	return sc;
1139	}
1140
1141	/** @} */
1142
1143	const rtems_driver_address_table sd_card_driver_ops = {
1144	.initialization_entry = sd_card_driver_init,
1145	.open_entry = NULL,
1146	.close_entry = NULL,
1147	.read_entry = sd_card_driver_read,
1148	.write_entry = sd_card_driver_write,
1149	.control_entry = NULL
1150	};

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