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update mmcsd: use local ffs and fls. #53

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329 changes: 128 additions & 201 deletions components/drivers/include/drivers/mmcsd_core.h
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Original file line number Diff line number Diff line change
Expand Up @@ -8,8 +8,8 @@
* http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2011-07-25 weety first version
* Date Author Notes
* 2011-07-25 weety first version
*/

#ifndef __CORE_H__
Expand All @@ -30,216 +30,143 @@ extern "C" {
#define mmcsd_dbg(fmt, ...)
#endif

struct rt_mmcsd_data {
rt_uint32_t blksize;
rt_uint32_t blks;
rt_uint32_t *buf;
rt_int32_t err;
rt_uint32_t flags;
#define DATA_DIR_WRITE (1 << 0)
#define DATA_DIR_READ (1 << 1)
#define DATA_STREAM (1 << 2)

unsigned int bytes_xfered;

struct rt_mmcsd_cmd *stop; /* stop command */
struct rt_mmcsd_req *mrq; /* associated request */

rt_uint32_t timeout_ns;
rt_uint32_t timeout_clks;
struct rt_mmcsd_data
{
rt_uint32_t blksize;
rt_uint32_t blks;
rt_uint32_t *buf;
rt_int32_t err;
rt_uint32_t flags;
#define DATA_DIR_WRITE (1 << 0)
#define DATA_DIR_READ (1 << 1)
#define DATA_STREAM (1 << 2)

unsigned int bytes_xfered;

struct rt_mmcsd_cmd *stop; /* stop command */
struct rt_mmcsd_req *mrq; /* associated request */

rt_uint32_t timeout_ns;
rt_uint32_t timeout_clks;
};

struct rt_mmcsd_cmd {
rt_uint32_t cmd_code;
rt_uint32_t arg;
rt_uint32_t resp[4];
rt_uint32_t flags;
/*rsponse types
*bits:0~3
*/
#define RESP_MASK (0xF)
#define RESP_NONE (0)
#define RESP_R1 (1 << 0)
#define RESP_R1B (2 << 0)
#define RESP_R2 (3 << 0)
#define RESP_R3 (4 << 0)
#define RESP_R4 (5 << 0)
#define RESP_R6 (6 << 0)
#define RESP_R7 (7 << 0)
#define RESP_R5 (8 << 0) /*SDIO command response type*/
/*command types
*bits:4~5
*/
#define CMD_MASK (3 << 4) /* command type */
#define CMD_AC (0 << 4)
#define CMD_ADTC (1 << 4)
#define CMD_BC (2 << 4)
#define CMD_BCR (3 << 4)

#define resp_type(cmd) ((cmd)->flags & RESP_MASK)

/*spi rsponse types
*bits:6~8
*/
#define RESP_SPI_MASK (0x7 << 6)
#define RESP_SPI_R1 (1 << 6)
#define RESP_SPI_R1B (2 << 6)
#define RESP_SPI_R2 (3 << 6)
#define RESP_SPI_R3 (4 << 6)
#define RESP_SPI_R4 (5 << 6)
#define RESP_SPI_R5 (6 << 6)
#define RESP_SPI_R7 (7 << 6)

#define spi_resp_type(cmd) ((cmd)->flags & RESP_SPI_MASK)
/*
* These are the command types.
*/
#define cmd_type(cmd) ((cmd)->flags & CMD_MASK)

rt_int32_t retries; /* max number of retries */
rt_int32_t err;

struct rt_mmcsd_data *data;
struct rt_mmcsd_req *mrq; /* associated request */
struct rt_mmcsd_cmd
{
rt_uint32_t cmd_code;
rt_uint32_t arg;
rt_uint32_t resp[4];
rt_uint32_t flags;
/*rsponse types
*bits:0~3
*/
#define RESP_MASK (0xF)
#define RESP_NONE (0)
#define RESP_R1 (1 << 0)
#define RESP_R1B (2 << 0)
#define RESP_R2 (3 << 0)
#define RESP_R3 (4 << 0)
#define RESP_R4 (5 << 0)
#define RESP_R6 (6 << 0)
#define RESP_R7 (7 << 0)
#define RESP_R5 (8 << 0) /*SDIO command response type*/
/*command types
*bits:4~5
*/
#define CMD_MASK (3 << 4) /* command type */
#define CMD_AC (0 << 4)
#define CMD_ADTC (1 << 4)
#define CMD_BC (2 << 4)
#define CMD_BCR (3 << 4)

#define resp_type(cmd) ((cmd)->flags & RESP_MASK)

/*spi rsponse types
*bits:6~8
*/
#define RESP_SPI_MASK (0x7 << 6)
#define RESP_SPI_R1 (1 << 6)
#define RESP_SPI_R1B (2 << 6)
#define RESP_SPI_R2 (3 << 6)
#define RESP_SPI_R3 (4 << 6)
#define RESP_SPI_R4 (5 << 6)
#define RESP_SPI_R5 (6 << 6)
#define RESP_SPI_R7 (7 << 6)

#define spi_resp_type(cmd) ((cmd)->flags & RESP_SPI_MASK)
/*
* These are the command types.
*/
#define cmd_type(cmd) ((cmd)->flags & CMD_MASK)

rt_int32_t retries; /* max number of retries */
rt_int32_t err;

struct rt_mmcsd_data *data;
struct rt_mmcsd_req *mrq; /* associated request */
};

struct rt_mmcsd_req {
struct rt_mmcsd_data *data;
struct rt_mmcsd_cmd *cmd;
struct rt_mmcsd_cmd *stop;
struct rt_mmcsd_req
{
struct rt_mmcsd_data *data;
struct rt_mmcsd_cmd *cmd;
struct rt_mmcsd_cmd *stop;
};

/*the following is response bit*/
#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
#define R1_ERASE_PARAM (1 << 27) /* ex, c */
#define R1_WP_VIOLATION (1 << 26) /* erx, c */
#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
#define R1_CC_ERROR (1 << 20) /* erx, c */
#define R1_ERROR (1 << 19) /* erx, c */
#define R1_UNDERRUN (1 << 18) /* ex, c */
#define R1_OVERRUN (1 << 17) /* ex, c */
#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
#define R1_ERASE_RESET (1 << 13) /* sr, c */
#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
#define R1_ERASE_PARAM (1 << 27) /* ex, c */
#define R1_WP_VIOLATION (1 << 26) /* erx, c */
#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
#define R1_CC_ERROR (1 << 20) /* erx, c */
#define R1_ERROR (1 << 19) /* erx, c */
#define R1_UNDERRUN (1 << 18) /* ex, c */
#define R1_OVERRUN (1 << 17) /* ex, c */
#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
#define R1_ERASE_RESET (1 << 13) /* sr, c */
#define R1_STATUS(x) (x & 0xFFFFE000)
#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
#define R1_READY_FOR_DATA (1 << 8) /* sx, a */
#define R1_APP_CMD (1 << 5) /* sr, c */


#define R1_SPI_IDLE (1 << 0)
#define R1_SPI_ERASE_RESET (1 << 1)
#define R1_SPI_ILLEGAL_COMMAND (1 << 2)
#define R1_SPI_COM_CRC (1 << 3)
#define R1_SPI_ERASE_SEQ (1 << 4)
#define R1_SPI_ADDRESS (1 << 5)
#define R1_SPI_PARAMETER (1 << 6)
#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
#define R1_READY_FOR_DATA (1 << 8) /* sx, a */
#define R1_APP_CMD (1 << 5) /* sr, c */


#define R1_SPI_IDLE (1 << 0)
#define R1_SPI_ERASE_RESET (1 << 1)
#define R1_SPI_ILLEGAL_COMMAND (1 << 2)
#define R1_SPI_COM_CRC (1 << 3)
#define R1_SPI_ERASE_SEQ (1 << 4)
#define R1_SPI_ADDRESS (1 << 5)
#define R1_SPI_PARAMETER (1 << 6)
/* R1 bit 7 is always zero */
#define R2_SPI_CARD_LOCKED (1 << 8)
#define R2_SPI_WP_ERASE_SKIP (1 << 9) /* or lock/unlock fail */
#define R2_SPI_LOCK_UNLOCK_FAIL R2_SPI_WP_ERASE_SKIP
#define R2_SPI_ERROR (1 << 10)
#define R2_SPI_CC_ERROR (1 << 11)
#define R2_SPI_CARD_ECC_ERROR (1 << 12)
#define R2_SPI_WP_VIOLATION (1 << 13)
#define R2_SPI_ERASE_PARAM (1 << 14)
#define R2_SPI_OUT_OF_RANGE (1 << 15) /* or CSD overwrite */
#define R2_SPI_CSD_OVERWRITE R2_SPI_OUT_OF_RANGE

#define CARD_BUSY 0x80000000 /* Card Power up status bit */
#define R2_SPI_CARD_LOCKED (1 << 8)
#define R2_SPI_WP_ERASE_SKIP (1 << 9) /* or lock/unlock fail */
#define R2_SPI_LOCK_UNLOCK_FAIL R2_SPI_WP_ERASE_SKIP
#define R2_SPI_ERROR (1 << 10)
#define R2_SPI_CC_ERROR (1 << 11)
#define R2_SPI_CARD_ECC_ERROR (1 << 12)
#define R2_SPI_WP_VIOLATION (1 << 13)
#define R2_SPI_ERASE_PARAM (1 << 14)
#define R2_SPI_OUT_OF_RANGE (1 << 15) /* or CSD overwrite */
#define R2_SPI_CSD_OVERWRITE R2_SPI_OUT_OF_RANGE

#define CARD_BUSY 0x80000000 /* Card Power up status bit */

/* R5 response bits */
#define R5_COM_CRC_ERROR (1 << 15)
#define R5_ILLEGAL_COMMAND (1 << 14)
#define R5_ERROR (1 << 11)
#define R5_FUNCTION_NUMBER (1 << 9)
#define R5_OUT_OF_RANGE (1 << 8)
#define R5_STATUS(x) (x & 0xCB00)
#define R5_IO_CURRENT_STATE(x) ((x & 0x3000) >> 12)



/**
* fls - find last (most-significant) bit set
* @x: the word to search
*
* This is defined the same way as ffs.
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/

rt_inline rt_uint32_t fls(rt_uint32_t val)
{
rt_uint32_t bit = 32;

if (!val)
return 0;
if (!(val & 0xffff0000u))
{
val <<= 16;
bit -= 16;
}
if (!(val & 0xff000000u))
{
val <<= 8;
bit -= 8;
}
if (!(val & 0xf0000000u))
{
val <<= 4;
bit -= 4;
}
if (!(val & 0xc0000000u))
{
val <<= 2;
bit -= 2;
}
if (!(val & 0x80000000u))
{
val <<= 1;
bit -= 1;
}

return bit;
}

#if !defined(__GNUC__) || defined(__CC_ARM)
rt_inline rt_uint32_t ffs(rt_uint32_t x)
{
int r = 1;

if (!x)
return 0;
if (!(x & 0xffff)) {
x >>= 16;
r += 16;
}
if (!(x & 0xff)) {
x >>= 8;
r += 8;
}
if (!(x & 0xf)) {
x >>= 4;
r += 4;
}
if (!(x & 3)) {
x >>= 2;
r += 2;
}
if (!(x & 1)) {
x >>= 1;
r += 1;
}
return r;
}
#endif
#define R5_COM_CRC_ERROR (1 << 15)
#define R5_ILLEGAL_COMMAND (1 << 14)
#define R5_ERROR (1 << 11)
#define R5_FUNCTION_NUMBER (1 << 9)
#define R5_OUT_OF_RANGE (1 << 8)
#define R5_STATUS(x) (x & 0xCB00)
#define R5_IO_CURRENT_STATE(x) ((x & 0x3000) >> 12)

void mmcsd_host_lock(struct rt_mmcsd_host *host);
void mmcsd_host_unlock(struct rt_mmcsd_host *host);
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