*
* \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 <io/kfile.h>
+#include <io/kblock.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>
#define SD_IN_IDLE 0x01
#define SD_STARTTOKEN 0xFE
-#define TIMEOUT_NAC 256
-
+#define TIMEOUT_NAC 16384
#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)
+static bool sd_select(Sd *sd, bool state)
{
+ KFile *fd = sd->ch;
+
if (state)
{
+ SD_CS_ON();
+
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);
+ SD_CS_OFF();
LOG_ERR("sd_select timeout\n");
return false;
}
}
}
-static int16_t sd_waitR1(void)
+static int16_t sd_waitR1(Sd *sd)
{
uint8_t datain;
for (int i = 0; i < TIMEOUT_NAC; i++)
{
- datain = kfile_getc(fd);
- if (datain != 0xff)
- return (int16_t)datain;
+ datain = kfile_getc(sd->ch);
+ 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)
+static int16_t sd_sendCommand(Sd *sd, uint8_t cmd, uint32_t param, uint8_t crc)
{
+ KFile *fd = sd->ch;
/* The 7th bit of command must be a 1 */
kfile_putc(cmd | 0x40, fd);
kfile_putc(crc, fd);
- return sd_waitR1();
+ return sd_waitR1(sd);
}
-
-static bool sd_getBlock(void *buf, size_t len)
+static bool sd_getBlock(Sd *sd, void *buf, size_t len)
{
uint8_t token;
uint16_t crc;
+ KFile *fd = sd->ch;
+
for (int i = 0; i < TIMEOUT_NAC; i++)
{
token = kfile_getc(fd);
return false;
}
-#define SD_SELECT() \
+#define SD_SELECT(sd) \
do \
{ \
- if (!sd_select(true)) \
+ if (!sd_select((sd), true)) \
{ \
LOG_ERR("%s failed, card busy\n", __func__); \
return EOF; \
#define SD_SETBLOCKLEN 0x50
-static int16_t sd_setBlockLen(uint32_t newlen)
+static int16_t sd_setBlockLen(Sd *sd, uint32_t newlen)
{
- SD_SELECT();
+ SD_SELECT(sd);
- int16_t r1 = sd_sendCommand(SD_SETBLOCKLEN, newlen, 0);
+ sd->r1 = sd_sendCommand(sd, SD_SETBLOCKLEN, newlen, 0);
- sd_select(false);
- return r1;
+ sd_select(sd, false);
+ return sd->r1;
}
#define SD_SEND_CSD 0x49
-static int16_t sd_getCSD(CardCSD *csd)
+static int16_t sd_getCSD(Sd *sd, CardCSD *csd)
{
- SD_SELECT();
+ SD_SELECT(sd);
- int16_t r1 = sd_sendCommand(SD_SEND_CSD, 0, 0);
+ int16_t r1 = sd_sendCommand(sd, SD_SEND_CSD, 0, 0);
if (r1)
{
- LOG_ERR("send_csd failed: %04X\n", r1);
- sd_select(false);
+ LOG_ERR("send_csd failed: %04X\n", sd->r1);
+ sd_select(sd, false);
return r1;
}
uint8_t buf[16];
- bool res = sd_getBlock(buf, sizeof(buf));
- sd_select(false);
+ bool res = sd_getBlock(sd, buf, sizeof(buf));
+ sd_select(sd, false);
if (res)
{
+ #if LOG_LEVEL >= LOG_LVL_INFO
+ LOG_INFO("CSD: [");
+ for (int i = 0; i < 16; i++)
+ kprintf("%02X ", buf[i]);
+ kprintf("]\n");
+ #endif
+
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);
#define SD_READ_SINGLEBLOCK 0x51
-static int16_t sd_readBlock(void *buf, uint32_t addr)
+static size_t sd_readDirect(struct KBlock *b, block_idx_t idx, void *buf, size_t offset, size_t size)
{
- SD_SELECT();
+ Sd *sd = SD_CAST(b);
+ LOG_INFO("reading from block %ld, offset %d, size %d\n", idx, offset, size);
- int16_t r1 = sd_sendCommand(SD_READ_SINGLEBLOCK, addr, 0);
+ if (sd->tranfer_len != size)
+ {
+ if ((sd->r1 = sd_setBlockLen(sd, size)))
+ {
+ LOG_ERR("setBlockLen failed: %04X\n", sd->r1);
+ return 0;
+ }
+ sd->tranfer_len = size;
+ }
- if (r1)
+ SD_SELECT(sd);
+
+ sd->r1 = sd_sendCommand(sd, SD_READ_SINGLEBLOCK, idx * SD_DEFAULT_BLOCKLEN + offset, 0);
+
+ if (sd->r1)
{
- LOG_ERR("read single block failed: %04X\n", r1);
- sd_select(false);
- return r1;
+ LOG_ERR("read single block failed: %04X\n", sd->r1);
+ sd_select(sd, false);
+ return 0;
}
- bool res = sd_getBlock(buf, SD_DEFAULT_BLOCKLEN);
- sd_select(false);
+ bool res = sd_getBlock(sd, buf, size);
+ sd_select(sd, false);
if (!res)
{
LOG_ERR("read single block failed reading data\n");
- return EOF;
+ return 0;
}
else
- return 0;
+ return size;
}
#define SD_WRITE_SINGLEBLOCK 0x58
#define SD_DATA_ACCEPTED 0x05
-static int16_t sd_writeBlock(const void *buf, uint32_t addr)
+static size_t sd_writeDirect(KBlock *b, block_idx_t idx, const void *buf, size_t offset, size_t size)
{
- SD_SELECT();
+ Sd *sd = SD_CAST(b);
+ KFile *fd = sd->ch;
+ ASSERT(offset == 0);
+ ASSERT(size == SD_DEFAULT_BLOCKLEN);
- int16_t r1 = sd_sendCommand(SD_WRITE_SINGLEBLOCK, addr, 0);
+ LOG_INFO("writing block %ld\n", idx);
+ if (sd->tranfer_len != SD_DEFAULT_BLOCKLEN)
+ {
+ if ((sd->r1 = sd_setBlockLen(sd, SD_DEFAULT_BLOCKLEN)))
+ {
+ LOG_ERR("setBlockLen failed: %04X\n", sd->r1);
+ return 0;
+ }
+ sd->tranfer_len = SD_DEFAULT_BLOCKLEN;
+ }
- if (r1)
+ SD_SELECT(sd);
+
+ sd->r1 = sd_sendCommand(sd, SD_WRITE_SINGLEBLOCK, idx * SD_DEFAULT_BLOCKLEN, 0);
+
+ if (sd->r1)
{
- LOG_ERR("write single block failed: %04X\n", r1);
- sd_select(false);
- return r1;
+ LOG_ERR("write single block failed: %04X\n", sd->r1);
+ sd_select(sd, false);
+ return 0;
}
kfile_putc(SD_STARTTOKEN, fd);
/* send fake crc */
kfile_putc(0, fd);
kfile_putc(0, fd);
- uint8_t dataresp = (kfile_getc(fd) & 0x1F);
- sd_select(false);
- // FIXME: sometimes dataresp is 0, find out why.
- if (dataresp != SD_DATA_ACCEPTED)
+ uint8_t dataresp = kfile_getc(fd);
+ sd_select(sd, false);
+
+ if ((dataresp & 0x1f) != SD_DATA_ACCEPTED)
{
- LOG_ERR("write single block failed: %02X\n", dataresp);
+ LOG_ERR("write block %ld failed: %02X\n", idx, dataresp);
return EOF;
}
- else
- return 0;
-}
+ return SD_DEFAULT_BLOCKLEN;
+}
-bool sd_test(void)
+void sd_writeTest(Sd *sd)
{
- CardCSD csd;
- sd_getCSD(&csd);
+ uint8_t buf[SD_DEFAULT_BLOCKLEN];
+ memset(buf, 0, sizeof(buf));
+ for (block_idx_t i = 0; i < sd->b.blk_cnt; i++)
+ {
+ LOG_INFO("writing block %ld: %s\n", i, (sd_writeDirect(&sd->b, i, buf, 0, SD_DEFAULT_BLOCKLEN) == SD_DEFAULT_BLOCKLEN) ? "OK" : "FAIL");
+ }
+}
+
+
+bool sd_test(Sd *sd)
+{
uint8_t buf[SD_DEFAULT_BLOCKLEN];
- if (sd_readBlock(buf, 0) != 0)
+ if (sd_readDirect(&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 (sd_writeDirect(&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 (sd_readDirect(&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;
}
+static int sd_error(KBlock *b)
+{
+ Sd *sd = SD_CAST(b);
+ return sd->r1;
+}
+
+static void sd_clearerr(KBlock *b)
+{
+ Sd *sd = SD_CAST(b);
+ sd->r1 = 0;
+}
+
+static const KBlockVTable sd_unbuffered_vt =
+{
+ .readDirect = sd_readDirect,
+ .writeDirect = sd_writeDirect,
+
+ .error = sd_error,
+ .clearerr = sd_clearerr,
+};
+
+static const KBlockVTable sd_buffered_vt =
+{
+ .readDirect = sd_readDirect,
+ .writeDirect = sd_writeDirect,
+
+ .readBuf = kblock_swReadBuf,
+ .writeBuf = kblock_swWriteBuf,
+ .load = kblock_swLoad,
+ .store = kblock_swStore,
+
+ .error = sd_error,
+ .clearerr = sd_clearerr,
+};
+
#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_START_DELAY 10
+#define SD_INIT_TIMEOUT 1000
#define SD_IDLE_RETRIES 4
-bool sd_init(KFile *_fd)
+static bool sd_blockInit(Sd *sd, KFile *ch)
{
- uint16_t r1;
-
- ASSERT(_fd);
- fd = _fd;
+ ASSERT(sd);
+ ASSERT(ch);
+ memset(sd, 0, sizeof(*sd));
+ DB(sd->b.priv.type = KBT_SD);
+ sd->ch = ch;
SD_CS_INIT();
SD_CS_OFF();
/* Give 80 clk pulses to wake up the card */
for (int i = 0; i < 10; i++)
- kfile_putc(0xff, fd);
- kfile_flush(fd);
+ kfile_putc(0xff, ch);
+ kfile_flush(ch);
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);
+ SD_SELECT(sd);
+ sd->r1 = sd_sendCommand(sd, SD_GO_IDLE_STATE, 0, SD_GO_IDLE_STATE_CRC);
+ sd_select(sd, false);
- if (r1 == SD_IN_IDLE)
+ if (sd->r1 == SD_IN_IDLE)
break;
}
- if (r1 != SD_IN_IDLE)
+ if (sd->r1 != SD_IN_IDLE)
{
- LOG_ERR("go_idle_state failed: %04X\n", r1);
+ LOG_ERR("go_idle_state failed: %04X\n", sd->r1);
return false;
}
/* Wait for card to start */
do
{
- SD_SELECT();
- r1 = sd_sendCommand(SD_SEND_OP_COND, 0, SD_SEND_OP_COND_CRC);
- sd_select(false);
+ SD_SELECT(sd);
+ sd->r1 = sd_sendCommand(sd, SD_SEND_OP_COND, 0, SD_SEND_OP_COND_CRC);
+ sd_select(sd, false);
cpu_relax();
}
- while (r1 != 0 && timer_clock() - start < SD_INIT_TIMEOUT);
+ while (sd->r1 != 0 && timer_clock() - start < SD_INIT_TIMEOUT);
- if (r1)
+ if (sd->r1)
{
- LOG_ERR("send_op_cond failed: %04X\n", r1);
+ LOG_ERR("send_op_cond failed: %04X\n", sd->r1);
return false;
}
- r1 = sd_setBlockLen(SD_DEFAULT_BLOCKLEN);
+ sd->r1 = sd_setBlockLen(sd, SD_DEFAULT_BLOCKLEN);
+ sd->tranfer_len = SD_DEFAULT_BLOCKLEN;
- if (r1)
+ if (sd->r1)
{
- LOG_ERR("setBlockLen failed: %04X\n", r1);
+ LOG_ERR("setBlockLen failed: %04X\n", sd->r1);
return false;
}
- sd_status = !r1;
- return sd_status;
-}
+ /* Avoid warning for uninitialized csd use (gcc bug?) */
+ CardCSD csd = csd;
-DSTATUS sd_disk_initialize(BYTE drv)
-{
- return sd_disk_status(drv);
-}
-
-DSTATUS sd_disk_status(BYTE drv)
-{
- ASSERT(!drv);
+ sd->r1 = sd_getCSD(sd, &csd);
- if (sd_status)
- return RES_OK;
- else
- return STA_NOINIT;
-}
+ if (sd->r1)
+ {
+ LOG_ERR("getCSD failed: %04X\n", sd->r1);
+ return false;
+ }
-DRESULT sd_disk_read(BYTE drv, BYTE* buf, DWORD sector, BYTE count)
-{
- ASSERT(!drv);
+ sd->b.blk_size = SD_DEFAULT_BLOCKLEN;
+ sd->b.blk_cnt = csd.block_num * (csd.block_len / SD_DEFAULT_BLOCKLEN);
+ LOG_INFO("blk_size %d, blk_cnt %ld\n", sd->b.blk_size, sd->b.blk_cnt);
- if (!sd_status)
- return RES_NOTRDY;
+#if CONFIG_SD_AUTOASSIGN_FAT
+ disk_assignDrive(&sd->b, 0);
+#endif
- while (count--)
- {
- if (sd_readBlock(buf, sector * SD_DEFAULT_BLOCKLEN))
- return RES_ERROR;
- buf += SD_DEFAULT_BLOCKLEN;
- sector++;
- }
- return RES_OK;
+ return true;
}
-DRESULT sd_disk_write(BYTE drv, const BYTE* buf, DWORD sector, BYTE count)
+bool sd_initUnbuf(Sd *sd, KFile *ch)
{
- ASSERT(!drv);
-
- if (!sd_status)
- return RES_NOTRDY;
-
- while (count--)
+ if (sd_blockInit(sd, ch))
{
- if (sd_writeBlock(buf, sector * SD_DEFAULT_BLOCKLEN))
- return RES_ERROR;
- buf += SD_DEFAULT_BLOCKLEN;
- sector++;
+ sd->b.priv.vt = &sd_unbuffered_vt;
+ return true;
}
- return RES_OK;
+ else
+ return false;
}
-DRESULT sd_disk_ioctl(BYTE drv, BYTE cmd, void* buf)
-{
- ASSERT(!drv);
-
- if (!sd_status)
- return RES_NOTRDY;
+static uint8_t sd_buf[SD_DEFAULT_BLOCKLEN];
- switch (cmd)
+bool sd_initBuf(Sd *sd, KFile *ch)
+{
+ if (sd_blockInit(sd, ch))
{
- 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;
+ sd->b.priv.buf = sd_buf;
+ sd->b.priv.flags |= KB_BUFFERED | KB_PARTIAL_WRITE;
+ sd->b.priv.vt = &sd_buffered_vt;
+ sd->b.priv.vt->load(&sd->b, 0);
+ return true;
}
+ else
+ return false;
}
-DWORD get_fattime(void)
-{
- return 0;
-}
projects / bertos.git / blobdiff