*
* \brief Function library for secure digital memory.
*
- * \version $Id$
* \author Francesco Sacchi <batt@develer.com>
*/
#include "sd.h"
#include "hw/hw_sd.h"
-#include <kern/kfile.h>
-#include <drv/timer.h>
-
-#include <fs/fat.h>
+#include "cfg/cfg_sd.h"
+#define LOG_LEVEL SD_LOG_LEVEL
+#define LOG_FORMAT SD_LOG_FORMAT
#include <cfg/log.h>
-#include <cpu/power.h>
-
-#include <string.h> /* memset */
-
-/**
- * Card Specific Data
- * read directly from the card.
- */
-typedef struct CardCSD
-{
- uint16_t block_len; ///< Length of a block
- uint32_t block_num; ///< Number of block on the card
- uint16_t capacity; ///< Card capacity in MB
-} CardCSD;
-
-#define SD_IN_IDLE 0x01
-#define SD_STARTTOKEN 0xFE
-
-#define TIMEOUT_NAC 256
-
-#define SD_DEFAULT_BLOCKLEN 512
-
-/**
- * SPI communication channel.
- */
-static KFile *fd;
-
-/**
- * Current SD status.
- */
-static bool sd_status;
-
-#define SD_BUSY_TIMEOUT ms_to_ticks(200)
-
-static bool sd_select(bool state)
-{
- if (state)
- {
- ticks_t start = timer_clock();
- do
- {
- SD_CS_ON();
- if (kfile_getc(fd) == 0xff)
- return true;
- SD_CS_OFF();
- kfile_putc(0xff, fd);
- kfile_flush(fd);
- cpu_relax();
- }
- while (timer_clock() - start < SD_BUSY_TIMEOUT);
- LOG_ERR("sd_select timeout\n");
- return false;
- }
- else
- {
- kfile_putc(0xff, fd);
- kfile_flush(fd);
- SD_CS_OFF();
- return true;
- }
-}
+#include <io/kblock.h>
-static int16_t sd_waitR1(void)
-{
- uint8_t datain;
-
- for (int i = 0; i < TIMEOUT_NAC; i++)
- {
- datain = kfile_getc(fd);
- if (datain != 0xff)
- return (int16_t)datain;
- }
- LOG_ERR("Timeout waiting R1\n");
- return EOF;
-}
-
-static int16_t sd_sendCommand(uint8_t cmd, uint32_t param, uint8_t crc)
-{
- /* The 7th bit of command must be a 1 */
- kfile_putc(cmd | 0x40, fd);
-
- /* send parameter */
- kfile_putc((param >> 24) & 0xFF, fd);
- kfile_putc((param >> 16) & 0xFF, fd);
- kfile_putc((param >> 8) & 0xFF, fd);
- kfile_putc((param) & 0xFF, fd);
-
- kfile_putc(crc, fd);
-
- return sd_waitR1();
-}
-
-
-static bool sd_getBlock(void *buf, size_t len)
-{
- uint8_t token;
- uint16_t crc;
+#include <string.h>
- for (int i = 0; i < TIMEOUT_NAC; i++)
- {
- token = kfile_getc(fd);
- if (token != 0xff)
- {
- if (token == SD_STARTTOKEN)
- {
- if (kfile_read(fd, buf, len) == len)
- {
- if (kfile_read(fd, &crc, sizeof(crc)) == sizeof(crc))
- /* check CRC here if needed */
- return true;
- else
- LOG_ERR("get_block error getting crc\n");
- }
- else
- LOG_ERR("get_block len error: %d\n", (int)len);
- }
- else
- LOG_ERR("get_block token error: %02X\n", token);
-
- return false;
- }
- }
-
- LOG_ERR("get_block timeout waiting token\n");
- return false;
-}
-
-#define SD_SELECT() \
-do \
-{ \
- if (!sd_select(true)) \
- { \
- LOG_ERR("%s failed, card busy\n", __func__); \
- return EOF; \
- } \
-} \
-while (0)
-
-#define SD_SETBLOCKLEN 0x50
-
-static int16_t sd_setBlockLen(uint32_t newlen)
-{
- SD_SELECT();
-
- int16_t r1 = sd_sendCommand(SD_SETBLOCKLEN, newlen, 0);
-
- sd_select(false);
- return r1;
-}
-
-#define SD_SEND_CSD 0x49
-
-static int16_t sd_getCSD(CardCSD *csd)
-{
- SD_SELECT();
-
- int16_t r1 = sd_sendCommand(SD_SEND_CSD, 0, 0);
-
- if (r1)
- {
- LOG_ERR("send_csd failed: %04X\n", r1);
- sd_select(false);
- return r1;
- }
-
- uint8_t buf[16];
- bool res = sd_getBlock(buf, sizeof(buf));
- sd_select(false);
-
- if (res)
- {
- uint16_t mult = (1L << ((((buf[9] & 0x03) << 1) | ((buf[10] & 0x80) >> 7)) + 2));
- uint16_t c_size = (((uint16_t)(buf[6] & 0x03)) << 10) | (((uint16_t)buf[7]) << 2) |
- (((uint16_t)(buf[8] & 0xC0)) >> 6);
-
- csd->block_len = (1L << (buf[5] & 0x0F));
- csd->block_num = (c_size + 1) * mult;
- csd->capacity = (csd->block_len * csd->block_num) >> 20; // in MB
-
- LOG_INFO("block_len %d bytes, block_num %ld, total capacity %dMB\n", csd->block_len, csd->block_num, csd->capacity);
- return 0;
- }
- else
- return EOF;
-}
-
-
-#define SD_READ_SINGLEBLOCK 0x51
-
-static int16_t sd_readBlock(void *buf, uint32_t addr)
-{
- SD_SELECT();
-
- int16_t r1 = sd_sendCommand(SD_READ_SINGLEBLOCK, addr, 0);
-
- if (r1)
- {
- LOG_ERR("read single block failed: %04X\n", r1);
- sd_select(false);
- return r1;
- }
-
- bool res = sd_getBlock(buf, SD_DEFAULT_BLOCKLEN);
- sd_select(false);
- if (!res)
- {
- LOG_ERR("read single block failed reading data\n");
- return EOF;
- }
- else
- return 0;
-}
-#define SD_WRITE_SINGLEBLOCK 0x58
-#define SD_DATA_ACCEPTED 0x05
+#ifdef SD_INCLUDE_SPI_SOURCE
+ #include <drv/sd_spi.c>
+#endif
-static int16_t sd_writeBlock(const void *buf, uint32_t addr)
+void sd_writeTest(Sd *sd)
{
- SD_SELECT();
-
- int16_t r1 = sd_sendCommand(SD_WRITE_SINGLEBLOCK, addr, 0);
-
- if (r1)
- {
- LOG_ERR("write single block failed: %04X\n", r1);
- sd_select(false);
- return r1;
- }
-
- kfile_putc(SD_STARTTOKEN, fd);
- kfile_write(fd, buf, SD_DEFAULT_BLOCKLEN);
- /* send fake crc */
- kfile_putc(0, fd);
- kfile_putc(0, fd);
- uint8_t dataresp = (kfile_getc(fd) & 0x1F);
- sd_select(false);
+ uint8_t buf[SD_DEFAULT_BLOCKLEN];
+ memset(buf, 0, sizeof(buf));
- // FIXME: sometimes dataresp is 0, find out why.
- if (dataresp != SD_DATA_ACCEPTED)
+ for (block_idx_t i = 0; i < sd->b.blk_cnt; i++)
{
- LOG_ERR("write single block failed: %02X\n", dataresp);
- return EOF;
+ LOG_INFO("writing block %ld: %s\n", i, (kblock_read(&sd->b, i, buf, 0, SD_DEFAULT_BLOCKLEN) == SD_DEFAULT_BLOCKLEN) ? "OK" : "FAIL");
}
- else
- return 0;
}
-
-bool sd_test(void)
+bool sd_test(Sd *sd)
{
- CardCSD csd;
- sd_getCSD(&csd);
-
uint8_t buf[SD_DEFAULT_BLOCKLEN];
- if (sd_readBlock(buf, 0) != 0)
+ if (kblock_read(&sd->b, 0, buf, 0, sd->b.blk_size) != sd->b.blk_size)
return false;
kputchar('\n');
kputchar('\n');
}
- if (sd_writeBlock(buf, 0) != 0)
+ if (kblock_write(&sd->b, 0, buf, 0, SD_DEFAULT_BLOCKLEN) != SD_DEFAULT_BLOCKLEN)
return false;
memset(buf, 0, sizeof(buf));
- if (sd_readBlock(buf, 0) != 0)
+ if (kblock_read(&sd->b, 0, buf, 0, sd->b.blk_size) != sd->b.blk_size)
return false;
kputchar('\n');
- for (int i = 0; i < SD_DEFAULT_BLOCKLEN; i++)
+ for (block_idx_t i = 0; i < sd->b.blk_size; i++)
{
kprintf("%02X ", buf[i]);
buf[i] = i;
return true;
}
-#define SD_GO_IDLE_STATE 0x40
-#define SD_GO_IDLE_STATE_CRC 0x95
-#define SD_SEND_OP_COND 0x41
-#define SD_SEND_OP_COND_CRC 0xF9
-
-#define SD_START_DELAY ms_to_ticks(10)
-#define SD_INIT_TIMEOUT ms_to_ticks(1000)
-#define SD_IDLE_RETRIES 4
-
-bool sd_init(KFile *_fd)
-{
- uint16_t r1;
-
- ASSERT(_fd);
- fd = _fd;
-
- SD_CS_INIT();
- SD_CS_OFF();
-
- /* Wait a few moments for supply voltage to stabilize */
- timer_delay(SD_START_DELAY);
-
- /* Give 80 clk pulses to wake up the card */
- for (int i = 0; i < 10; i++)
- kfile_putc(0xff, fd);
- kfile_flush(fd);
-
- for (int i = 0; i < SD_IDLE_RETRIES; i++)
- {
- SD_SELECT();
- r1 = sd_sendCommand(SD_GO_IDLE_STATE, 0, SD_GO_IDLE_STATE_CRC);
- sd_select(false);
-
- if (r1 == SD_IN_IDLE)
- break;
- }
-
- if (r1 != SD_IN_IDLE)
- {
- LOG_ERR("go_idle_state failed: %04X\n", r1);
- return false;
- }
-
- ticks_t start = timer_clock();
- /* Wait for card to start */
- do
- {
- SD_SELECT();
- r1 = sd_sendCommand(SD_SEND_OP_COND, 0, SD_SEND_OP_COND_CRC);
- sd_select(false);
- cpu_relax();
- }
- while (r1 != 0 && timer_clock() - start < SD_INIT_TIMEOUT);
-
- if (r1)
- {
- LOG_ERR("send_op_cond failed: %04X\n", r1);
- return false;
- }
-
- r1 = sd_setBlockLen(SD_DEFAULT_BLOCKLEN);
-
- if (r1)
- {
- LOG_ERR("setBlockLen failed: %04X\n", r1);
- return false;
- }
- sd_status = !r1;
- return sd_status;
-}
-
-DSTATUS sd_disk_initialize(BYTE drv)
-{
- return sd_disk_status(drv);
-}
-
-DSTATUS sd_disk_status(BYTE drv)
-{
- ASSERT(!drv);
-
- if (sd_status)
- return RES_OK;
- else
- return STA_NOINIT;
-}
-
-DRESULT sd_disk_read(BYTE drv, BYTE* buf, DWORD sector, BYTE count)
-{
- ASSERT(!drv);
-
- if (!sd_status)
- return RES_NOTRDY;
-
- while (count--)
- {
- if (sd_readBlock(buf, sector * SD_DEFAULT_BLOCKLEN))
- return RES_ERROR;
- buf += SD_DEFAULT_BLOCKLEN;
- sector++;
- }
- return RES_OK;
-}
-
-DRESULT sd_disk_write(BYTE drv, const BYTE* buf, DWORD sector, BYTE count)
-{
- ASSERT(!drv);
-
- if (!sd_status)
- return RES_NOTRDY;
-
- while (count--)
- {
- if (sd_writeBlock(buf, sector * SD_DEFAULT_BLOCKLEN))
- return RES_ERROR;
- buf += SD_DEFAULT_BLOCKLEN;
- sector++;
- }
- return RES_OK;
-}
-
-DRESULT sd_disk_ioctl(BYTE drv, BYTE cmd, void* buf)
-{
- ASSERT(!drv);
-
- if (!sd_status)
- return RES_NOTRDY;
-
- switch (cmd)
- {
- case CTRL_SYNC:
- return RES_OK;
-
- case GET_SECTOR_SIZE:
- *(WORD *)buf = SD_DEFAULT_BLOCKLEN;
- return RES_OK;
-
- case GET_SECTOR_COUNT:
- {
- CardCSD csd;
- if (sd_getCSD(&csd))
- return RES_ERROR;
- else
- {
- *(DWORD *)buf = csd.block_num;
- return RES_OK;
- }
-
- }
-
- case GET_BLOCK_SIZE:
- *(DWORD *)buf = 1;
- return RES_OK;
-
- default:
- LOG_ERR("unknown command: [%d]\n", cmd);
- return RES_PARERR;
- }
-}
-
-DWORD get_fattime(void)
-{
- return 0;
-}
projects / bertos.git / blobdiff