1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * Copyright (C) 2006 Daniel Ankers
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
20 ****************************************************************************/
21 #include "config.h" /* for HAVE_MULTIDRIVE */
25 #include "sd-pp-target.h"
27 #include "ata_idle_notify.h"
39 #define SECTOR_SIZE 512
40 #define BLOCKS_PER_BANK 0x7a7800
42 /* Comparing documentations of various MMC/SD controllers revealed, */
43 /* that this controller seems to be a mix of PXA27x, PXA255 and */
44 /* some PP specific stuff. The register and bit definitions are */
45 /* taken from the 'PXA27x Developers Manual', as it appears to be */
46 /* the closest match. Known differences and obscurities are commented.*/
48 #define MMC_STRPCL (*(volatile unsigned int *)(0x70008200))
49 #define MMC_STAT (*(volatile unsigned int *)(0x70008204))
50 #define MMC_CLKRT (*(volatile unsigned int *)(0x70008208))
51 #define MMC_SPI (*(volatile unsigned int *)(0x7000820c))
52 #define MMC_CMDAT (*(volatile unsigned int *)(0x70008210))
53 #define MMC_RESTO (*(volatile unsigned int *)(0x70008214))
54 #define MMC_RDTO (*(volatile unsigned int *)(0x70008218))
55 #define MMC_BLKLEN (*(volatile unsigned int *)(0x7000821c))
56 #define MMC_NUMBLK (*(volatile unsigned int *)(0x70008220))
57 #define MMC_I_MASK (*(volatile unsigned int *)(0x70008224))
58 #define MMC_CMD (*(volatile unsigned int *)(0x70008228))
59 #define MMC_ARGH (*(volatile unsigned int *)(0x7000822c))
60 #define MMC_ARGL (*(volatile unsigned int *)(0x70008230))
61 #define MMC_RES (*(volatile unsigned int *)(0x70008234))
63 /* PXA255/27x have separate RX/TX FIFOs with 32x8 bit */
64 /* PP502x has a combined Data FIFO with 16x16 bit */
65 #define MMC_DATA_FIFO (*(volatile unsigned int *)(0x70008280))
67 /* PP specific registers, no other controller seem to have such. */
68 #define MMC_SD_STATE (*(volatile unsigned int *)(0x70008238))
69 #define MMC_INIT_1 (*(volatile unsigned int *)(0x70008240))
70 #define MMC_INIT_2 (*(volatile unsigned int *)(0x70008244))
73 #define STAT_SDIO_SUSPEND_ACK (1 << 16)
74 #define STAT_SDIO_INT (1 << 15)
75 #define STAT_RD_STALLED (1 << 14)
76 #define STAT_END_CMD_RES (1 << 13)
77 #define STAT_PRG_DONE (1 << 12)
78 #define STAT_DATA_TRAN_DONE (1 << 11)
79 #define STAT_SPI_WR_ERR (1 << 10)
80 #define STAT_FLASH_ERR (1 << 9)
81 #define STAT_CLK_EN (1 << 8)
82 #define STAT_RECV_FIFO_FULL (1 << 7) /* taken from PXA255 */
83 #define STAT_XMIT_FIFO_EMPTY (1 << 6) /* taken from PXA255 */
84 #define STAT_RES_CRC_ERR (1 << 5)
85 #define STAT_DAT_ERR_TOKEN (1 << 4)
86 #define STAT_CRC_RD_ERR (1 << 3)
87 #define STAT_CRC_WR_ERR (1 << 2)
88 #define STAT_TIME_OUT_RES (1 << 1)
89 #define STAT_TIME_OUT_READ (1)
90 #define STAT_ERROR_BITS (0x3f)
93 /* Some of the bits used by the OF don't make much sense with these */
94 /* definitions. So they're probably different between PXA and PP502x */
95 /* Bits 0-5 appear to match though. */
96 #define CMDAT_SDIO_RESUME (1 << 13)
97 #define CMDAT_SDIO_SUSPEND (1 << 12)
98 #define CMDAT_SDIO_INT_EN (1 << 11)
99 #define CMDAT_STOP_TRAN (1 << 10)
100 #define CMDAT_SD_4DAT (1 << 8)
101 #define CMDAT_DMA_EN (1 << 7)
102 #define CMDAT_INIT (1 << 6)
103 #define CMDAT_BUSY (1 << 5)
104 #define CMDAT_STRM_BLK (1 << 4)
105 #define CMDAT_WR_RD (1 << 3)
106 #define CMDAT_DATA_EN (1 << 2)
107 #define CMDAT_RES_TYPE3 (3)
108 #define CMDAT_RES_TYPE2 (2)
109 #define CMDAT_RES_TYPE1 (1)
111 /* MMC_I_MASK bits */
112 /* PP502x apparently only has bits 0-3 */
113 #define I_MASK_SDIO_SUSPEND_ACK (1 << 12)
114 #define I_MASK_SDIO_INT (1 << 11)
115 #define I_MASK_RD_STALLED (1 << 10)
116 #define I_MASK_RES_ERR (1 << 9)
117 #define I_MASK_DAT_ERR (1 << 8)
118 #define I_MASK_TINT (1 << 7)
119 #define I_MASK_TXFIFO_WR_REQ (1 << 6)
120 #define I_MASK_RXFIFO_RD_REQ (1 << 5)
121 #define I_MASK_CLK_IS_OFF (1 << 4)
122 #define I_MASK_STOP_CMD (1 << 3)
123 #define I_MASK_END_CMD_RES (1 << 2)
124 #define I_MASK_PRG_DONE (1 << 1)
125 #define I_MASK_DATA_TRAN_DONE (1 << 0)
127 #define FIFO_LEN 16 /* FIFO is 16 words deep */
132 #define EC_WAIT_STATE_FAILED 3
133 #define EC_CHECK_TIMEOUT_FAILED 4
134 #define EC_POWER_UP 5
135 #define EC_READ_TIMEOUT 6
136 #define EC_WRITE_TIMEOUT 7
137 #define EC_TRAN_SEL_BANK 8
138 #define EC_TRAN_READ_ENTRY 9
139 #define EC_TRAN_READ_EXIT 10
140 #define EC_TRAN_WRITE_ENTRY 11
141 #define EC_TRAN_WRITE_EXIT 12
142 #define EC_FIFO_SEL_BANK_EMPTY 13
143 #define EC_FIFO_SEL_BANK_DONE 14
144 #define EC_FIFO_ENA_BANK_EMPTY 15
145 #define EC_FIFO_READ_FULL 16
146 #define EC_FIFO_WR_EMPTY 17
147 #define EC_FIFO_WR_DONE 18
148 #define EC_COMMAND 19
151 /* for compatibility */
152 static long last_disk_activity
= -1;
154 /** static, private data **/
155 static bool initialized
= false;
157 static long next_yield
= 0;
158 #define MIN_YIELD_PERIOD 1000
160 static tCardInfo card_info
[2];
161 static tCardInfo
*currcard
= NULL
; /* current active card */
163 struct sd_card_status
169 static struct sd_card_status sd_status
[NUM_DRIVES
] =
172 #ifdef HAVE_MULTIDRIVE
177 /* Shoot for around 75% usage */
178 static long sd_stack
[(DEFAULT_STACK_SIZE
*2 + 0x1c0)/sizeof(long)];
179 static const char sd_thread_name
[] = "ata/sd";
180 static struct mutex sd_mtx SHAREDBSS_ATTR
;
181 static struct event_queue sd_queue
;
184 static int sd_first_drive
= 0;
187 /* Posted when card plugged status has changed */
189 /* Actions taken by sd_thread when card status has changed */
190 enum sd_thread_actions
197 /* Private Functions */
199 static unsigned int check_time
[NUM_EC
];
201 static inline bool sd_check_timeout(long timeout
, int id
)
203 return !TIME_AFTER(USEC_TIMER
, check_time
[id
] + timeout
);
206 static bool sd_poll_status(unsigned int trigger
, long timeout
)
210 while ((MMC_STAT
& trigger
) == 0)
212 long time
= USEC_TIMER
;
214 if (TIME_AFTER(time
, next_yield
))
216 long ty
= USEC_TIMER
;
218 timeout
+= USEC_TIMER
- ty
;
219 next_yield
= ty
+ MIN_YIELD_PERIOD
;
222 if (TIME_AFTER(time
, t
+ timeout
))
229 static int sd_command(unsigned int cmd
, unsigned long arg1
,
230 unsigned long *response
, unsigned int cmdat
)
232 int i
, words
; /* Number of 16 bit words to read from MMC_RES */
233 unsigned int data
[9];
236 MMC_ARGH
= (unsigned int)((arg1
& 0xffff0000) >> 16);
237 MMC_ARGL
= (unsigned int)((arg1
& 0xffff));
240 if (!sd_poll_status(STAT_END_CMD_RES
, 100000))
243 if ((MMC_STAT
& STAT_ERROR_BITS
) != 0)
244 /* Error sending command */
245 return -EC_COMMAND
- (MMC_STAT
& STAT_ERROR_BITS
)*100;
247 if (cmd
== SD_GO_IDLE_STATE
)
248 return 0; /* no response here */
250 words
= (cmdat
== CMDAT_RES_TYPE2
) ? 9 : 3;
252 for (i
= 0; i
< words
; i
++) /* MMC_RES is read MSB first */
253 data
[i
] = MMC_RES
; /* Read most significant 16-bit word */
255 if (response
== NULL
)
257 /* response discarded */
259 else if (cmdat
== CMDAT_RES_TYPE2
)
261 /* Response type 2 has the following structure:
262 * [135:135] Start Bit - '0'
263 * [134:134] Transmission bit - '0'
264 * [133:128] Reserved - '111111'
265 * [127:001] CID or CSD register including internal CRC7
266 * [000:000] End Bit - '1'
268 response
[3] = (data
[0]<<24) + (data
[1]<<8) + (data
[2]>>8);
269 response
[2] = (data
[2]<<24) + (data
[3]<<8) + (data
[4]>>8);
270 response
[1] = (data
[4]<<24) + (data
[5]<<8) + (data
[6]>>8);
271 response
[0] = (data
[6]<<24) + (data
[7]<<8) + (data
[8]>>8);
275 /* Response types 1, 1b, 3, 6, 7 have the following structure:
276 * Types 4 and 5 are not supported.
278 * [47] Start bit - '0'
279 * [46] Transmission bit - '0'
280 * [45:40] R1, R1b, R6, R7: Command index
281 * R3: Reserved - '111111'
282 * [39:8] R1, R1b: Card Status
285 * [15: 0] Card Status Bits 23, 22, 19, 12:0
287 * [22] ILLEGAL_COMMAND
289 * [12:9] CURRENT_STATE
296 * [1:0] Reserved for test mode
297 * R7: [19:16] Voltage accepted
298 * [15:8] echo-back of check pattern
299 * [7:1] R1, R1b: CRC7
300 * R3: Reserved - '1111111'
303 response
[0] = (data
[0]<<24) + (data
[1]<<8) + (data
[2]>>8);
309 static int sd_wait_for_state(unsigned int state
, int id
)
311 unsigned long response
= 0;
312 unsigned int timeout
= 0x80000;
314 check_time
[id
] = USEC_TIMER
;
318 int ret
= sd_command(SD_SEND_STATUS
, currcard
->rca
, &response
, CMDAT_RES_TYPE1
);
324 if (((response
>> 9) & 0xf) == state
)
326 MMC_SD_STATE
= state
;
330 if (!sd_check_timeout(timeout
, id
))
331 return -EC_WAIT_STATE_FAILED
*100 - id
;
334 if (TIME_AFTER(us
, next_yield
))
337 timeout
+= USEC_TIMER
- us
;
338 next_yield
= us
+ MIN_YIELD_PERIOD
;
344 static inline bool card_detect_target(void)
348 return (GPIOA_INPUT_VAL
& 0x80) == 0; /* low active */
349 #elif defined SANSA_C200
350 return (GPIOL_INPUT_VAL
& 0x08) != 0; /* high active */
358 static inline void copy_read_sectors_fast(unsigned char **buf
)
360 /* Copy one chunk of 16 words using best method for start alignment */
361 switch ( (intptr_t)*buf
& 3 )
365 "ldmia %[data], { r2-r9 } \r\n"
366 "orr r2, r2, r3, lsl #16 \r\n"
367 "orr r4, r4, r5, lsl #16 \r\n"
368 "orr r6, r6, r7, lsl #16 \r\n"
369 "orr r8, r8, r9, lsl #16 \r\n"
370 "stmia %[buf]!, { r2, r4, r6, r8 } \r\n"
371 "ldmia %[data], { r2-r9 } \r\n"
372 "orr r2, r2, r3, lsl #16 \r\n"
373 "orr r4, r4, r5, lsl #16 \r\n"
374 "orr r6, r6, r7, lsl #16 \r\n"
375 "orr r8, r8, r9, lsl #16 \r\n"
376 "stmia %[buf]!, { r2, r4, r6, r8 } \r\n"
378 : [data
]"r"(&MMC_DATA_FIFO
)
379 : "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9"
384 "ldmia %[data], { r2-r9 } \r\n"
385 "orr r3, r2, r3, lsl #16 \r\n"
386 "strb r3, [%[buf]], #1 \r\n"
387 "mov r3, r3, lsr #8 \r\n"
388 "strh r3, [%[buf]], #2 \r\n"
389 "mov r3, r3, lsr #16 \r\n"
390 "orr r3, r3, r4, lsl #8 \r\n"
391 "orr r3, r3, r5, lsl #24 \r\n"
392 "mov r5, r5, lsr #8 \r\n"
393 "orr r5, r5, r6, lsl #8 \r\n"
394 "orr r5, r5, r7, lsl #24 \r\n"
395 "mov r7, r7, lsr #8 \r\n"
396 "orr r7, r7, r8, lsl #8 \r\n"
397 "orr r7, r7, r9, lsl #24 \r\n"
398 "mov r2, r9, lsr #8 \r\n"
399 "stmia %[buf]!, { r3, r5, r7 } \r\n"
400 "ldmia %[data], { r3-r10 } \r\n"
401 "orr r2, r2, r3, lsl #8 \r\n"
402 "orr r2, r2, r4, lsl #24 \r\n"
403 "mov r4, r4, lsr #8 \r\n"
404 "orr r4, r4, r5, lsl #8 \r\n"
405 "orr r4, r4, r6, lsl #24 \r\n"
406 "mov r6, r6, lsr #8 \r\n"
407 "orr r6, r6, r7, lsl #8 \r\n"
408 "orr r6, r6, r8, lsl #24 \r\n"
409 "mov r8, r8, lsr #8 \r\n"
410 "orr r8, r8, r9, lsl #8 \r\n"
411 "orr r8, r8, r10, lsl #24 \r\n"
412 "mov r10, r10, lsr #8 \r\n"
413 "stmia %[buf]!, { r2, r4, r6, r8 } \r\n"
414 "strb r10, [%[buf]], #1 \r\n"
416 : [data
]"r"(&MMC_DATA_FIFO
)
417 : "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10"
422 "ldmia %[data], { r2-r9 } \r\n"
423 "strh r2, [%[buf]], #2 \r\n"
424 "orr r3, r3, r4, lsl #16 \r\n"
425 "orr r5, r5, r6, lsl #16 \r\n"
426 "orr r7, r7, r8, lsl #16 \r\n"
427 "stmia %[buf]!, { r3, r5, r7 } \r\n"
428 "ldmia %[data], { r2-r8, r10 } \r\n"
429 "orr r2, r9, r2, lsl #16 \r\n"
430 "orr r3, r3, r4, lsl #16 \r\n"
431 "orr r5, r5, r6, lsl #16 \r\n"
432 "orr r7, r7, r8, lsl #16 \r\n"
433 "stmia %[buf]!, { r2, r3, r5, r7 } \r\n"
434 "strh r10, [%[buf]], #2 \r\n"
436 : [data
]"r"(&MMC_DATA_FIFO
)
437 : "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10"
442 "ldmia %[data], { r2-r9 } \r\n"
443 "orr r3, r2, r3, lsl #16 \r\n"
444 "strb r3, [%[buf]], #1 \r\n"
445 "mov r3, r3, lsr #8 \r\n"
446 "orr r3, r3, r4, lsl #24 \r\n"
447 "mov r4, r4, lsr #8 \r\n"
448 "orr r5, r4, r5, lsl #8 \r\n"
449 "orr r5, r5, r6, lsl #24 \r\n"
450 "mov r6, r6, lsr #8 \r\n"
451 "orr r7, r6, r7, lsl #8 \r\n"
452 "orr r7, r7, r8, lsl #24 \r\n"
453 "mov r8, r8, lsr #8 \r\n"
454 "orr r2, r8, r9, lsl #8 \r\n"
455 "stmia %[buf]!, { r3, r5, r7 } \r\n"
456 "ldmia %[data], { r3-r10 } \r\n"
457 "orr r2, r2, r3, lsl #24 \r\n"
458 "mov r3, r3, lsr #8 \r\n"
459 "orr r4, r3, r4, lsl #8 \r\n"
460 "orr r4, r4, r5, lsl #24 \r\n"
461 "mov r5, r5, lsr #8 \r\n"
462 "orr r6, r5, r6, lsl #8 \r\n"
463 "orr r6, r6, r7, lsl #24 \r\n"
464 "mov r7, r7, lsr #8 \r\n"
465 "orr r8, r7, r8, lsl #8 \r\n"
466 "orr r8, r8, r9, lsl #24 \r\n"
467 "mov r9, r9, lsr #8 \r\n"
468 "orr r10, r9, r10, lsl #8 \r\n"
469 "stmia %[buf]!, { r2, r4, r6, r8 } \r\n"
470 "strh r10, [%[buf]], #2 \r\n"
471 "mov r10, r10, lsr #16 \r\n"
472 "strb r10, [%[buf]], #1 \r\n"
474 : [data
]"r"(&MMC_DATA_FIFO
)
475 : "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10"
481 static inline void copy_read_sectors_slow(unsigned char** buf
)
486 /* Copy one chunk of 16 words */
489 "ldrh %[t], [%[data]] \r\n"
490 "strb %[t], [%[buf]], #1 \r\n"
491 "mov %[t], %[t], lsr #8 \r\n"
492 "strb %[t], [%[buf]], #1 \r\n"
493 "subs %[cnt], %[cnt], #1 \r\n"
495 : [cnt
]"+&r"(cnt
), [buf
]"+&r"(*buf
),
497 : [data
]"r"(&MMC_DATA_FIFO
)
501 /* Writes have to be kept slow for now */
502 static inline void copy_write_sectors(const unsigned char** buf
)
504 int cnt
= FIFO_LEN
- 1;
508 time
= USEC_TIMER
+ 3;
509 if (((intptr_t)*buf
& 3) == 0)
512 "ldmia %[buf]!, { r3, r5, r7, r9 } \r\n"
513 "mov r4, r3, lsr #16 \r\n"
514 "mov r6, r5, lsr #16 \r\n"
515 "mov r8, r7, lsr #16 \r\n"
516 "mov r10, r9, lsr #16 \r\n"
517 "stmia %[data], { r3-r10 } \r\n"
518 "ldmia %[buf]!, { r3, r5, r7, r9 } \r\n"
519 "mov r4, r3, lsr #16 \r\n"
520 "mov r6, r5, lsr #16 \r\n"
521 "mov r8, r7, lsr #16 \r\n"
522 "mov %[t], r9, lsr #16 \r\n"
523 "stmia %[data], { r3-r9 } \r\n"
524 : [buf
]"+&r"(*buf
), [t
]"=&r"(t
)
525 : [data
]"r"(&MMC_DATA_FIFO
)
526 : "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10"
536 } while (--cnt
> 0); /* tail loop is faster */
540 /* Don't write the last word before at least 3 usec have elapsed since FIFO_EMPTY */
541 /* This prevents the 'two bytes inserted' bug. */
543 while (!TIME_AFTER(USEC_TIMER
, time
));
547 static int sd_select_bank(unsigned char bank
)
549 unsigned char card_data
[FIFO_LEN
*2];// FIFO_LEN words=FIFO_LEN*2 bytes
550 const unsigned char* write_buf
;
553 memset(card_data
, 0, sizeof card_data
);
555 ret
= sd_wait_for_state(SD_TRAN
, EC_TRAN_SEL_BANK
);
562 ret
= sd_command(35, 0, NULL
, /* CMD35 is vendor specific */
563 0x1c00 | CMDAT_WR_RD
| CMDAT_DATA_EN
| CMDAT_RES_TYPE1
);
567 MMC_SD_STATE
= SD_PRG
;
571 /* Write the card data */
572 for (i
= 0; i
< SD_BLOCK_SIZE
/2; i
+= FIFO_LEN
)
574 write_buf
= card_data
;
575 /* Wait for the FIFO to empty */
576 if (sd_poll_status(STAT_XMIT_FIFO_EMPTY
, 10000))
578 copy_write_sectors(&write_buf
); /* Copy one chunk of 16 words */
579 /* clear buffer: only the first chunk contains interesting data (bank), the remaining is zero filling */
580 memset(card_data
, 0, sizeof card_data
);
584 return -EC_FIFO_SEL_BANK_EMPTY
;
587 if (!sd_poll_status(STAT_PRG_DONE
, 10000))
588 return -EC_FIFO_SEL_BANK_DONE
;
590 currcard
->current_bank
= bank
;
595 static void sd_card_mux(int card_no
)
597 /* Set the current card mux */
598 #if defined(SANSA_E200)
603 GPIO_CLEAR_BITWISE(GPIOA_ENABLE
, 0x7a);
604 GPIO_CLEAR_BITWISE(GPIOA_OUTPUT_EN
, 0x7a);
605 GPIO_SET_BITWISE(GPIOD_ENABLE
, 0x1f);
606 GPIO_SET_BITWISE(GPIOD_OUTPUT_VAL
, 0x1f);
607 GPIO_SET_BITWISE(GPIOD_OUTPUT_EN
, 0x1f);
609 outl((inl(0x70000014) & ~(0x3ffff)) | 0x255aa, 0x70000014);
615 GPIO_CLEAR_BITWISE(GPIOD_ENABLE
, 0x1f);
616 GPIO_CLEAR_BITWISE(GPIOD_OUTPUT_EN
, 0x1f);
617 GPIO_SET_BITWISE(GPIOA_ENABLE
, 0x7a);
618 GPIO_SET_BITWISE(GPIOA_OUTPUT_VAL
, 0x7a);
619 GPIO_SET_BITWISE( GPIOA_OUTPUT_EN
, 0x7a);
621 outl(inl(0x70000014) & ~(0x3ffff), 0x70000014);
623 #elif defined(SANSA_C200)
628 GPIO_CLEAR_BITWISE(GPIOD_ENABLE
, 0x1f);
629 GPIO_CLEAR_BITWISE(GPIOD_OUTPUT_EN
, 0x1f);
630 GPIO_SET_BITWISE(GPIOA_ENABLE
, 0x7a);
631 GPIO_SET_BITWISE(GPIOA_OUTPUT_VAL
, 0x7a);
632 GPIO_SET_BITWISE( GPIOA_OUTPUT_EN
, 0x7a);
634 outl(inl(0x70000014) & ~(0x3ffff), 0x70000014);
640 GPIO_CLEAR_BITWISE(GPIOA_ENABLE
, 0x7a);
641 GPIO_CLEAR_BITWISE(GPIOA_OUTPUT_EN
, 0x7a);
642 GPIO_SET_BITWISE(GPIOD_ENABLE
, 0x1f);
643 GPIO_SET_BITWISE(GPIOD_OUTPUT_VAL
, 0x1f);
644 GPIO_SET_BITWISE(GPIOD_OUTPUT_EN
, 0x1f);
646 outl((inl(0x70000014) & ~(0x3ffff)) | 0x255aa, 0x70000014);
648 #elif defined(PHILIPS_SA9200)
649 /* only 1 "card" (no external memory card) */
652 GPIO_SET_BITWISE(GPIOH_ENABLE
, 0x80);
653 GPIO_SET_BITWISE(GPIOH_OUTPUT_EN
, 0x80);
655 outl(0x255aa, 0x70000014);
657 GPIO_CLEAR_BITWISE(GPIOA_ENABLE
, 0x04);
658 GPIO_CLEAR_BITWISE(GPIOA_OUTPUT_EN
, 0x04);
660 GPIO_CLEAR_BITWISE(GPIOA_ENABLE
, 0x7a);
661 GPIO_CLEAR_BITWISE(GPIOA_OUTPUT_EN
, 0x7a);
663 GPIO_SET_BITWISE(GPIOH_OUTPUT_VAL
, 0x80);
664 GPIO_SET_BITWISE(GPIOH_OUTPUT_EN
, 0x80);
668 static void sd_init_device(int card_no
)
670 /* SD Protocol registers */
672 unsigned long response
= 0;
675 unsigned char carddata
[512];
676 unsigned char *dataptr
;
677 unsigned long temp_reg
[4];
680 /* Enable and initialise controller */
681 MMC_CLKRT
= 6; /* switch to lowest clock rate */
683 /* Initialise card data as blank */
684 memset(currcard
, 0, sizeof(*currcard
));
686 /* Switch card mux to card to initialize */
687 sd_card_mux(card_no
);
690 MMC_INIT_1
|= (1 << 15);
691 MMC_INIT_2
|= (1 << 15);
692 MMC_INIT_2
&= ~(3 << 12);
693 MMC_INIT_2
|= (1 << 13);
694 MMC_INIT_1
&= ~(3 << 12);
695 MMC_INIT_1
|= (1 << 13);
697 DEV_EN
|= DEV_ATA
; /* Enable controller */
698 DEV_RS
|= DEV_ATA
; /* Reset controller */
699 DEV_RS
&=~DEV_ATA
; /* Clear Reset */
701 MMC_SD_STATE
= SD_TRAN
;
703 MMC_I_MASK
= 0xf; /* disable interrupts */
705 ret
= sd_command(SD_GO_IDLE_STATE
, 0, NULL
, 0x100);
707 goto card_init_error
;
709 check_time
[EC_POWER_UP
] = USEC_TIMER
;
713 - non-SDHC cards simply ignore SD_SEND_IF_COND (CMD8) and we get error -219,
714 which we can just ignore and assume we're dealing with standard SD.
715 - SDHC cards echo back the argument into the response. This is how we
716 tell if the card is SDHC.
718 ret
= sd_command(SD_SEND_IF_COND
,0x1aa, &response
,
719 CMDAT_DATA_EN
| CMDAT_RES_TYPE3
);
720 if ( (ret
< 0) && (ret
!=-219) )
721 goto card_init_error
;
724 while ((currcard
->ocr
& (1 << 31)) == 0) /* until card is powered up */
726 ret
= sd_command(SD_APP_CMD
, currcard
->rca
, NULL
, CMDAT_RES_TYPE1
);
728 goto card_init_error
;
731 if(response
== 0x1aa)
734 ret
= sd_command(SD_APP_OP_COND
, (1<<30)|0x100000,
735 &currcard
->ocr
, CMDAT_RES_TYPE3
);
738 #endif /* HAVE_HOTSWAP */
741 ret
= sd_command(SD_APP_OP_COND
, 0x100000, &currcard
->ocr
,
746 goto card_init_error
;
748 if (!sd_check_timeout(5000000, EC_POWER_UP
))
751 goto card_init_error
;
755 ret
= sd_command(SD_ALL_SEND_CID
, 0, temp_reg
, CMDAT_RES_TYPE2
);
757 goto card_init_error
;
760 currcard
->cid
[i
] = temp_reg
[3-i
];
762 ret
= sd_command(SD_SEND_RELATIVE_ADDR
, 0, &currcard
->rca
, CMDAT_RES_TYPE1
);
764 goto card_init_error
;
766 ret
= sd_command(SD_SEND_CSD
, currcard
->rca
, temp_reg
, CMDAT_RES_TYPE2
);
768 goto card_init_error
;
771 currcard
->csd
[i
] = temp_reg
[3-i
];
773 sd_parse_csd(currcard
);
775 MMC_CLKRT
= 0; /* switch to highest clock rate */
777 ret
= sd_command(SD_SELECT_CARD
, currcard
->rca
, NULL
,
778 0x80 | CMDAT_RES_TYPE1
);
780 goto card_init_error
;
782 ret
= sd_command(SD_APP_CMD
, currcard
->rca
, NULL
, CMDAT_RES_TYPE1
);
784 goto card_init_error
;
786 ret
= sd_command(SD_SET_BUS_WIDTH
, currcard
->rca
| 2, NULL
,
787 CMDAT_RES_TYPE1
); /* 4 bit */
789 goto card_init_error
;
791 ret
= sd_command(SD_SET_BLOCKLEN
, currcard
->blocksize
, NULL
,
794 goto card_init_error
;
796 MMC_BLKLEN
= currcard
->blocksize
;
798 /* If this card is >4GB & not SDHC, then we need to enable bank switching */
799 if( (currcard
->numblocks
>= BLOCKS_PER_BANK
) &&
800 ((currcard
->ocr
& (1<<30)) == 0) )
802 MMC_SD_STATE
= SD_TRAN
;
805 ret
= sd_command(SD_SWITCH_FUNC
, 0x80ffffef, NULL
,
806 0x1c00 | CMDAT_DATA_EN
| CMDAT_RES_TYPE1
);
808 goto card_init_error
;
810 /* Read 512 bytes from the card.
811 The first 512 bits contain the status information
812 TODO: Do something useful with this! */
814 for (i
= 0; i
< SD_BLOCK_SIZE
/2; i
+= FIFO_LEN
)
816 /* Wait for the FIFO to be full */
817 if (sd_poll_status(STAT_RECV_FIFO_FULL
, 100000))
819 copy_read_sectors_slow(&dataptr
);
823 ret
= -EC_FIFO_ENA_BANK_EMPTY
;
824 goto card_init_error
;
828 currcard
->initialized
= 1;
831 /* Card failed to initialize so disable it */
833 currcard
->initialized
= ret
;
836 /* lock must already be aquired */
837 static void sd_select_device(int card_no
)
839 currcard
= &card_info
[card_no
];
843 /* Main card always gets a chance */
844 sd_status
[0].retry
= 0;
847 if (currcard
->initialized
> 0)
849 /* This card is already initialized - switch to it */
850 sd_card_mux(card_no
);
854 if (currcard
->initialized
== 0)
856 /* Card needs (re)init */
857 sd_init_device(card_no
);
863 int sd_read_sectors(IF_MD2(int drive
,) unsigned long start
, int incount
,
866 #ifndef HAVE_MULTIDRIVE
870 unsigned char *buf
, *buf_end
;
873 /* TODO: Add DMA support. */
880 if (drive
!= 0 && !card_detect_target())
882 /* no external sd-card inserted */
887 sd_select_device(drive
);
889 if (currcard
->initialized
< 0)
891 ret
= currcard
->initialized
;
895 last_disk_activity
= current_tick
;
897 /* Only switch banks with non-SDHC cards */
898 if((currcard
->ocr
& (1<<30))==0)
900 bank
= start
/ BLOCKS_PER_BANK
;
902 if (currcard
->current_bank
!= bank
)
904 ret
= sd_select_bank(bank
);
909 start
-= bank
* BLOCKS_PER_BANK
;
912 ret
= sd_wait_for_state(SD_TRAN
, EC_TRAN_READ_ENTRY
);
916 MMC_NUMBLK
= incount
;
919 if(currcard
->ocr
& (1<<30) )
922 ret
= sd_command(SD_READ_MULTIPLE_BLOCK
, start
, NULL
,
923 0x1c00 | CMDAT_BUSY
| CMDAT_DATA_EN
| CMDAT_RES_TYPE1
);
928 ret
= sd_command(SD_READ_MULTIPLE_BLOCK
, start
* SD_BLOCK_SIZE
, NULL
,
929 0x1c00 | CMDAT_BUSY
| CMDAT_DATA_EN
| CMDAT_RES_TYPE1
);
934 /* TODO: Don't assume SD_BLOCK_SIZE == SECTOR_SIZE */
936 buf_end
= (unsigned char *)inbuf
+ incount
* currcard
->blocksize
;
937 for (buf
= inbuf
; buf
< buf_end
;)
939 /* Wait for the FIFO to be full */
940 if (sd_poll_status(STAT_RECV_FIFO_FULL
, 0x80000))
942 copy_read_sectors_fast(&buf
); /* Copy one chunk of 16 words */
943 /* TODO: Switch bank if necessary */
947 ret
= -EC_FIFO_READ_FULL
;
951 last_disk_activity
= current_tick
;
953 ret
= sd_command(SD_STOP_TRANSMISSION
, 0, NULL
, CMDAT_RES_TYPE1
);
957 ret
= sd_wait_for_state(SD_TRAN
, EC_TRAN_READ_EXIT
);
965 mutex_unlock(&sd_mtx
);
970 if (sd_status
[drive
].retry
< sd_status
[drive
].retry_max
971 && ret
!= -EC_NOCARD
)
973 sd_status
[drive
].retry
++;
974 currcard
->initialized
= 0;
980 int sd_write_sectors(IF_MD2(int drive
,) unsigned long start
, int count
,
983 /* Write support is not finished yet */
984 /* TODO: The standard suggests using ACMD23 prior to writing multiple blocks
985 to improve performance */
986 #ifndef HAVE_MULTIDRIVE
990 const unsigned char *buf
, *buf_end
;
998 if (drive
!= 0 && !card_detect_target())
1000 /* no external sd-card inserted */
1002 goto sd_write_error
;
1005 sd_select_device(drive
);
1007 if (currcard
->initialized
< 0)
1009 ret
= currcard
->initialized
;
1010 goto sd_write_error
;
1013 /* Only switch banks with non-SDHC cards */
1014 if((currcard
->ocr
& (1<<30))==0)
1016 bank
= start
/ BLOCKS_PER_BANK
;
1018 if (currcard
->current_bank
!= bank
)
1020 ret
= sd_select_bank(bank
);
1022 goto sd_write_error
;
1025 start
-= bank
* BLOCKS_PER_BANK
;
1028 check_time
[EC_WRITE_TIMEOUT
] = USEC_TIMER
;
1030 ret
= sd_wait_for_state(SD_TRAN
, EC_TRAN_WRITE_ENTRY
);
1032 goto sd_write_error
;
1037 if(currcard
->ocr
& (1<<30) )
1040 ret
= sd_command(SD_WRITE_MULTIPLE_BLOCK
, start
, NULL
,
1041 CMDAT_WR_RD
| CMDAT_DATA_EN
| CMDAT_RES_TYPE1
);
1046 ret
= sd_command(SD_WRITE_MULTIPLE_BLOCK
, start
*SD_BLOCK_SIZE
, NULL
,
1047 CMDAT_WR_RD
| CMDAT_DATA_EN
| CMDAT_RES_TYPE1
);
1050 goto sd_write_error
;
1052 buf_end
= outbuf
+ count
* currcard
->blocksize
- 2*FIFO_LEN
;
1054 for (buf
= outbuf
; buf
<= buf_end
;)
1058 /* Set MMC_SD_STATE to SD_PRG for the last buffer fill */
1059 MMC_SD_STATE
= SD_PRG
;
1062 copy_write_sectors(&buf
); /* Copy one chunk of 16 words */
1063 /* TODO: Switch bank if necessary */
1065 /* Wait for the FIFO to empty */
1066 if (!sd_poll_status(STAT_XMIT_FIFO_EMPTY
, 0x80000))
1068 ret
= -EC_FIFO_WR_EMPTY
;
1069 goto sd_write_error
;
1073 last_disk_activity
= current_tick
;
1075 if (!sd_poll_status(STAT_PRG_DONE
, 0x80000))
1077 ret
= -EC_FIFO_WR_DONE
;
1078 goto sd_write_error
;
1081 ret
= sd_command(SD_STOP_TRANSMISSION
, 0, NULL
, CMDAT_RES_TYPE1
);
1083 goto sd_write_error
;
1085 ret
= sd_wait_for_state(SD_TRAN
, EC_TRAN_WRITE_EXIT
);
1087 goto sd_write_error
;
1093 mutex_unlock(&sd_mtx
);
1098 if (sd_status
[drive
].retry
< sd_status
[drive
].retry_max
1099 && ret
!= -EC_NOCARD
)
1101 sd_status
[drive
].retry
++;
1102 currcard
->initialized
= 0;
1103 goto sd_write_retry
;
1108 static void sd_thread(void) __attribute__((noreturn
));
1109 static void sd_thread(void)
1111 struct queue_event ev
;
1112 bool idle_notified
= false;
1116 queue_wait_w_tmo(&sd_queue
, &ev
, HZ
);
1121 case SYS_HOTSWAP_INSERTED
:
1122 case SYS_HOTSWAP_EXTRACTED
:
1123 fat_lock(); /* lock-out FAT activity first -
1124 prevent deadlocking via disk_mount that
1125 would cause a reverse-order attempt with
1127 mutex_lock(&sd_mtx
); /* lock-out card activity - direct calls
1128 into driver that bypass the fat cache */
1130 /* We now have exclusive control of fat cache and ata */
1132 disk_unmount(sd_first_drive
+1); /* release "by force", ensure file
1133 descriptors aren't leaked and any busy
1134 ones are invalid if mounting */
1136 /* Force card init for new card, re-init for re-inserted one or
1137 * clear if the last attempt to init failed with an error. */
1138 card_info
[1].initialized
= 0;
1139 sd_status
[1].retry
= 0;
1141 if (ev
.id
== SYS_HOTSWAP_INSERTED
)
1142 disk_mount(sd_first_drive
+1);
1144 queue_broadcast(SYS_FS_CHANGED
, 0);
1146 /* Access is now safe */
1147 mutex_unlock(&sd_mtx
);
1152 if (TIME_BEFORE(current_tick
, last_disk_activity
+(3*HZ
)))
1154 idle_notified
= false;
1158 /* never let a timer wrap confuse us */
1159 next_yield
= USEC_TIMER
;
1163 call_storage_idle_notifys(false);
1164 idle_notified
= true;
1168 case SYS_USB_CONNECTED
:
1169 usb_acknowledge(SYS_USB_CONNECTED_ACK
);
1170 /* Wait until the USB cable is extracted again */
1171 usb_wait_for_disconnect(&sd_queue
);
1174 case SYS_USB_DISCONNECTED
:
1175 usb_acknowledge(SYS_USB_DISCONNECTED_ACK
);
1181 void sd_enable(bool on
)
1185 DEV_EN
|= DEV_ATA
; /* Enable controller */
1189 DEV_EN
&= ~DEV_ATA
; /* Disable controller */
1199 mutex_init(&sd_mtx
);
1201 mutex_lock(&sd_mtx
);
1209 /* init controller */
1210 #if defined(PHILIPS_SA9200)
1211 GPIOA_ENABLE
= 0x00;
1212 GPIO_SET_BITWISE(GPIOD_ENABLE
, 0x01);
1214 outl(inl(0x70000088) & ~(0x4), 0x70000088);
1215 outl(inl(0x7000008c) & ~(0x4), 0x7000008c);
1216 GPO32_ENABLE
|= 0x4;
1218 GPIO_SET_BITWISE(GPIOG_ENABLE
, (0x3 << 5));
1219 GPIO_SET_BITWISE(GPIOG_OUTPUT_EN
, (0x3 << 5));
1220 GPIO_SET_BITWISE(GPIOG_OUTPUT_VAL
, (0x3 << 5));
1224 /* enable card detection port - mask interrupt first */
1226 GPIO_CLEAR_BITWISE(GPIOA_INT_EN
, 0x80);
1228 GPIO_CLEAR_BITWISE(GPIOA_OUTPUT_EN
, 0x80);
1229 GPIO_SET_BITWISE(GPIOA_ENABLE
, 0x80);
1230 #elif defined SANSA_C200
1231 GPIO_CLEAR_BITWISE(GPIOL_INT_EN
, 0x08);
1233 GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_EN
, 0x08);
1234 GPIO_SET_BITWISE(GPIOL_ENABLE
, 0x08);
1237 sd_select_device(0);
1239 if (currcard
->initialized
< 0)
1240 ret
= currcard
->initialized
;
1242 queue_init(&sd_queue
, true);
1243 create_thread(sd_thread
, sd_stack
, sizeof(sd_stack
), 0,
1244 sd_thread_name
IF_PRIO(, PRIORITY_USER_INTERFACE
)
1247 /* enable interupt for the mSD card */
1251 CPU_INT_EN
= HI_MASK
;
1252 CPU_HI_INT_EN
= GPIO0_MASK
;
1254 GPIOA_INT_LEV
= (0x80 << 8) | (~GPIOA_INPUT_VAL
& 0x80);
1256 GPIOA_INT_CLR
= 0x80;
1258 /* enable the card detect interrupt */
1259 GPIO_SET_BITWISE(GPIOA_INT_EN
, 0x80);
1260 #elif defined SANSA_C200
1261 CPU_INT_EN
= HI_MASK
;
1262 CPU_HI_INT_EN
= GPIO2_MASK
;
1264 GPIOL_INT_LEV
= (0x08 << 8) | (~GPIOL_INPUT_VAL
& 0x08);
1266 GPIOL_INT_CLR
= 0x08;
1268 /* enable the card detect interrupt */
1269 GPIO_SET_BITWISE(GPIOL_INT_EN
, 0x08);
1274 mutex_unlock(&sd_mtx
);
1279 tCardInfo
*card_get_info_target(int card_no
)
1281 return &card_info
[card_no
];
1284 static int sd1_oneshot_callback(struct timeout
*tmo
)
1288 /* This is called only if the state was stable for 300ms - check state
1289 * and post appropriate event. */
1290 if (card_detect_target())
1291 queue_broadcast(SYS_HOTSWAP_INSERTED
, 0);
1293 queue_broadcast(SYS_HOTSWAP_EXTRACTED
, 0);
1298 /* called on insertion/removal interrupt */
1299 void microsd_int(void)
1301 static struct timeout sd1_oneshot
;
1304 GPIO_CLEAR_BITWISE(GPIOA_INT_EN
, 0x80);
1305 GPIOA_INT_LEV
= (0x80 << 8) | (~GPIOA_INPUT_VAL
& 0x80);
1306 GPIOA_INT_CLR
= 0x80;
1307 GPIO_SET_BITWISE(GPIOA_INT_EN
, 0x80);
1309 #elif defined SANSA_C200
1310 GPIO_CLEAR_BITWISE(GPIOL_INT_EN
, 0x08);
1311 GPIOL_INT_LEV
= (0x08 << 8) | (~GPIOL_INPUT_VAL
& 0x08);
1312 GPIOL_INT_CLR
= 0x08;
1313 GPIO_SET_BITWISE(GPIOL_INT_EN
, 0x08);
1315 timeout_register(&sd1_oneshot
, sd1_oneshot_callback
, (3*HZ
/10), 0);
1317 #endif /* HAVE_HOTSWAP */
1319 long sd_last_disk_activity(void)
1321 return last_disk_activity
;
1325 bool sd_removable(IF_MD_NONVOID(int drive
))
1327 #ifndef HAVE_MULTIDRIVE
1333 bool sd_present(IF_MD_NONVOID(int drive
))
1335 #ifndef HAVE_MULTIDRIVE
1344 return card_detect_target();
1349 #ifdef CONFIG_STORAGE_MULTI
1350 int sd_num_drives(int first_drive
)
1353 /* Store which logical drive number(s) we have been assigned */
1354 sd_first_drive
= first_drive
;
1359 #ifdef HAVE_MULTIDRIVE