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sf: Add extended read commands support

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Current sf uses FAST_READ command, this patch adds support to
use the different/extended read command.

This implementation will determine the fastest command by taking
the supported commands from the flash and the controller, controller
is always been a priority.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
This commit is contained in:
Jagannadha Sutradharudu Teki 2014-01-11 15:10:28 +05:30
parent 12f00caf61
commit 4e09cc1e2c
5 changed files with 126 additions and 86 deletions
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2
drivers/mtd/spi/sf_internal.h
View file

@ -36,6 +36,8 @@
/* Read commands */
#define CMD_READ_ARRAY_SLOW 0x03
#define CMD_READ_ARRAY_FAST 0x0b
#define CMD_READ_DUAL_OUTPUT_FAST 0x3b
#define CMD_READ_DUAL_IO_FAST 0xbb
#define CMD_READ_ID 0x9f
/* Bank addr access commands */

2
drivers/mtd/spi/sf_ops.c
View file

@ -285,7 +285,7 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
return 0;
}
cmd[0] = CMD_READ_ARRAY_FAST;
cmd[0] = flash->read_cmd;
cmd[4] = 0x00;
while (len) {

190
drivers/mtd/spi/sf_probe.c
View file

@ -27,6 +27,7 @@ DECLARE_GLOBAL_DATA_PTR;
* @ext_jedec: Device ext_jedec ID
* @sector_size: Sector size of this device
* @nr_sectors: No.of sectors on this device
* @e_rd_cmd: Enum list for read commands
* @flags: Importent param, for flash specific behaviour
*/
struct spi_flash_params {
@ -35,110 +36,111 @@ struct spi_flash_params {
u16 ext_jedec;
u32 sector_size;
u32 nr_sectors;
u8 e_rd_cmd;
u16 flags;
};
static const struct spi_flash_params spi_flash_params_table[] = {
#ifdef CONFIG_SPI_FLASH_ATMEL /* ATMEL */
{"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4, SECT_4K},
{"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8, SECT_4K},
{"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8, SECT_4K},
{"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16, SECT_4K},
{"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32, SECT_4K},
{"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64, SECT_4K},
{"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128, SECT_4K},
{"AT25DF321", 0x1f4701, 0x0, 64 * 1024, 64, SECT_4K},
{"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4, 0, SECT_4K},
{"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8, 0, SECT_4K},
{"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8, 0, SECT_4K},
{"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16, 0, SECT_4K},
{"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32, 0, SECT_4K},
{"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64, 0, SECT_4K},
{"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"AT25DF321", 0x1f4701, 0x0, 64 * 1024, 64, 0, SECT_4K},
#endif
#ifdef CONFIG_SPI_FLASH_EON /* EON */
{"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64, 0},
{"EN25Q64", 0x1c3017, 0x0, 64 * 1024, 128, SECT_4K},
{"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256, 0},
{"EN25S64", 0x1c3817, 0x0, 64 * 1024, 128, 0},
{"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64, 0, 0},
{"EN25Q64", 0x1c3017, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256, 0, 0},
{"EN25S64", 0x1c3817, 0x0, 64 * 1024, 128, 0, 0},
#endif
#ifdef CONFIG_SPI_FLASH_GIGADEVICE /* GIGADEVICE */
{"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128, SECT_4K},
{"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64, SECT_4K},
{"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64, 0, SECT_4K},
#endif
#ifdef CONFIG_SPI_FLASH_MACRONIX /* MACRONIX */
{"MX25L2006E", 0xc22012, 0x0, 64 * 1024, 4, 0},
{"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8, 0},
{"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16, 0},
{"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32, 0},
{"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64, 0},
{"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128, 0},
{"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256, 0},
{"MX25L25635F", 0xc22019, 0x0, 64 * 1024, 512, 0},
{"MX25L51235F", 0xc2201a, 0x0, 64 * 1024, 1024, 0},
{"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256, 0},
{"MX25L2006E", 0xc22012, 0x0, 64 * 1024, 4, 0, 0},
{"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8, 0, 0},
{"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16, 0, 0},
{"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32, 0, 0},
{"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64, 0, 0},
{"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128, 0, 0},
{"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256, 0, 0},
{"MX25L25635F", 0xc22019, 0x0, 64 * 1024, 512, 0, 0},
{"MX25L51235F", 0xc2201a, 0x0, 64 * 1024, 1024, 0, 0},
{"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256, 0, 0},
#endif
#ifdef CONFIG_SPI_FLASH_SPANSION /* SPANSION */
{"S25FL008A", 0x010213, 0x0, 64 * 1024, 16, 0},
{"S25FL016A", 0x010214, 0x0, 64 * 1024, 32, 0},
{"S25FL032A", 0x010215, 0x0, 64 * 1024, 64, 0},
{"S25FL064A", 0x010216, 0x0, 64 * 1024, 128, 0},
{"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64, 0},
{"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256, 0},
{"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64, 0},
{"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128, 0},
{"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256, 0},
{"S25FL256S_256K", 0x010219, 0x4d00, 64 * 1024, 512, 0},
{"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512, 0},
{"S25FL512S_256K", 0x010220, 0x4d00, 64 * 1024, 1024, 0},
{"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024, 0},
{"S25FL008A", 0x010213, 0x0, 64 * 1024, 16, 0, 0},
{"S25FL016A", 0x010214, 0x0, 64 * 1024, 32, 0, 0},
{"S25FL032A", 0x010215, 0x0, 64 * 1024, 64, 0, 0},
{"S25FL064A", 0x010216, 0x0, 64 * 1024, 128, 0, 0},
{"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64, 0, 0},
{"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256, 0, 0},
{"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64, 0, 0},
{"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128, 0, 0},
{"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256, 0, 0},
{"S25FL256S_256K", 0x010219, 0x4d00, 64 * 1024, 512, RD_EXTN, 0},
{"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512, RD_EXTN, 0},
{"S25FL512S_256K", 0x010220, 0x4d00, 64 * 1024, 1024, 0, 0},
{"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024, 0, 0},
#endif
#ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */
{"M25P10", 0x202011, 0x0, 32 * 1024, 4, 0},
{"M25P20", 0x202012, 0x0, 64 * 1024, 4, 0},
{"M25P40", 0x202013, 0x0, 64 * 1024, 8, 0},
{"M25P80", 0x202014, 0x0, 64 * 1024, 16, 0},
{"M25P16", 0x202015, 0x0, 64 * 1024, 32, 0},
{"M25P32", 0x202016, 0x0, 64 * 1024, 64, 0},
{"M25P64", 0x202017, 0x0, 64 * 1024, 128, 0},
{"M25P128", 0x202018, 0x0, 256 * 1024, 64, 0},
{"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64, SECT_4K},
{"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64, SECT_4K},
{"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128, SECT_4K},
{"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128, SECT_4K},
{"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256, SECT_4K},
{"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256, SECT_4K},
{"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512, SECT_4K},
{"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512, SECT_4K},
{"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, E_FSR | SECT_4K},
{"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, E_FSR | SECT_4K},
{"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, E_FSR | SECT_4K},
{"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, E_FSR | SECT_4K},
{"M25P10", 0x202011, 0x0, 32 * 1024, 4, 0, 0},
{"M25P20", 0x202012, 0x0, 64 * 1024, 4, 0, 0},
{"M25P40", 0x202013, 0x0, 64 * 1024, 8, 0, 0},
{"M25P80", 0x202014, 0x0, 64 * 1024, 16, 0, 0},
{"M25P16", 0x202015, 0x0, 64 * 1024, 32, 0, 0},
{"M25P32", 0x202016, 0x0, 64 * 1024, 64, 0, 0},
{"M25P64", 0x202017, 0x0, 64 * 1024, 128, 0, 0},
{"M25P128", 0x202018, 0x0, 256 * 1024, 64, 0, 0},
{"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64, 0, SECT_4K},
{"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64, 0, SECT_4K},
{"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256, 0, SECT_4K},
{"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256, 0, SECT_4K},
{"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512, 0, SECT_4K},
{"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512, 0, SECT_4K},
{"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, 0, E_FSR | SECT_4K},
{"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, 0, E_FSR | SECT_4K},
{"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, 0, E_FSR | SECT_4K},
{"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, 0, E_FSR | SECT_4K},
#endif
#ifdef CONFIG_SPI_FLASH_SST /* SST */
{"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, SECT_4K | SST_WP},
{"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, SECT_4K | SST_WP},
{"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, SECT_4K | SST_WP},
{"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, SECT_4K | SST_WP},
{"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128, SECT_4K},
{"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, SECT_4K | SST_WP},
{"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, SECT_4K | SST_WP},
{"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, SECT_4K | SST_WP},
{"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, SECT_4K | SST_WP},
{"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, SECT_4K | SST_WP},
{"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, 0, SECT_4K | SST_WP},
{"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, 0, SECT_4K | SST_WP},
{"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, 0, SECT_4K | SST_WP},
{"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, 0, SECT_4K | SST_WP},
{"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, 0, SECT_4K | SST_WP},
{"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, 0, SECT_4K | SST_WP},
{"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, 0, SECT_4K | SST_WP},
{"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, 0, SECT_4K | SST_WP},
{"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, 0, SECT_4K | SST_WP},
#endif
#ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */
{"W25P80", 0xef2014, 0x0, 64 * 1024, 16, 0},
{"W25P16", 0xef2015, 0x0, 64 * 1024, 32, 0},
{"W25P32", 0xef2016, 0x0, 64 * 1024, 64, 0},
{"W25X40", 0xef3013, 0x0, 64 * 1024, 8, SECT_4K},
{"W25X16", 0xef3015, 0x0, 64 * 1024, 32, SECT_4K},
{"W25X32", 0xef3016, 0x0, 64 * 1024, 64, SECT_4K},
{"W25X64", 0xef3017, 0x0, 64 * 1024, 128, SECT_4K},
{"W25Q80BL", 0xef4014, 0x0, 64 * 1024, 16, SECT_4K},
{"W25Q16CL", 0xef4015, 0x0, 64 * 1024, 32, SECT_4K},
{"W25Q32BV", 0xef4016, 0x0, 64 * 1024, 64, SECT_4K},
{"W25Q64CV", 0xef4017, 0x0, 64 * 1024, 128, SECT_4K},
{"W25Q128BV", 0xef4018, 0x0, 64 * 1024, 256, SECT_4K},
{"W25Q256", 0xef4019, 0x0, 64 * 1024, 512, SECT_4K},
{"W25Q80BW", 0xef5014, 0x0, 64 * 1024, 16, SECT_4K},
{"W25Q16DW", 0xef6015, 0x0, 64 * 1024, 32, SECT_4K},
{"W25Q32DW", 0xef6016, 0x0, 64 * 1024, 64, SECT_4K},
{"W25Q64DW", 0xef6017, 0x0, 64 * 1024, 128, SECT_4K},
{"W25Q128FW", 0xef6018, 0x0, 64 * 1024, 256, SECT_4K},
{"W25P80", 0xef2014, 0x0, 64 * 1024, 16, 0, 0},
{"W25P16", 0xef2015, 0x0, 64 * 1024, 32, 0, 0},
{"W25P32", 0xef2016, 0x0, 64 * 1024, 64, 0, 0},
{"W25X40", 0xef3013, 0x0, 64 * 1024, 8, 0, SECT_4K},
{"W25X16", 0xef3015, 0x0, 64 * 1024, 32, 0, SECT_4K},
{"W25X32", 0xef3016, 0x0, 64 * 1024, 64, 0, SECT_4K},
{"W25X64", 0xef3017, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"W25Q80BL", 0xef4014, 0x0, 64 * 1024, 16, 0, SECT_4K},
{"W25Q16CL", 0xef4015, 0x0, 64 * 1024, 32, 0, SECT_4K},
{"W25Q32BV", 0xef4016, 0x0, 64 * 1024, 64, 0, SECT_4K},
{"W25Q64CV", 0xef4017, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"W25Q128BV", 0xef4018, 0x0, 64 * 1024, 256, 0, SECT_4K},
{"W25Q256", 0xef4019, 0x0, 64 * 1024, 512, 0, SECT_4K},
{"W25Q80BW", 0xef5014, 0x0, 64 * 1024, 16, 0, SECT_4K},
{"W25Q16DW", 0xef6015, 0x0, 64 * 1024, 32, 0, SECT_4K},
{"W25Q32DW", 0xef6016, 0x0, 64 * 1024, 64, 0, SECT_4K},
{"W25Q64DW", 0xef6017, 0x0, 64 * 1024, 128, 0, SECT_4K},
{"W25Q128FW", 0xef6018, 0x0, 64 * 1024, 256, 0, SECT_4K},
#endif
/*
* Note:
@ -155,12 +157,20 @@ static const struct spi_flash_params spi_flash_params_table[] = {
*/
};
/* Read commands array */
static u8 spi_read_cmds_array[] = {
CMD_READ_ARRAY_SLOW,
CMD_READ_DUAL_OUTPUT_FAST,
CMD_READ_DUAL_IO_FAST,
};
static struct spi_flash *spi_flash_validate_params(struct spi_slave *spi,
u8 *idcode)
{
const struct spi_flash_params *params;
struct spi_flash *flash;
int i;
u8 cmd;
u16 jedec = idcode[1] << 8 | idcode[2];
u16 ext_jedec = idcode[3] << 8 | idcode[4];
@ -222,6 +232,16 @@ static struct spi_flash *spi_flash_validate_params(struct spi_slave *spi,
flash->erase_size = flash->sector_size;
}
/* Look for the fastest read cmd */
cmd = fls(params->e_rd_cmd & flash->spi->op_mode_rx);
if (cmd) {
cmd = spi_read_cmds_array[cmd - 1];
flash->read_cmd = cmd;
} else {
/* Go for for default supported read cmd */
flash->read_cmd = CMD_READ_ARRAY_FAST;
}
/* Poll cmd seclection */
flash->poll_cmd = CMD_READ_STATUS;
#ifdef CONFIG_SPI_FLASH_STMICRO

8
include/spi.h
View file

@ -31,6 +31,12 @@
#define SPI_XFER_MMAP_END 0x10 /* Memory Mapped End */
#define SPI_XFER_ONCE (SPI_XFER_BEGIN | SPI_XFER_END)
/* SPI RX operation modes */
#define SPI_OPM_RX_AS 1 << 0
#define SPI_OPM_RX_DOUT 1 << 1
#define SPI_OPM_RX_DIO 1 << 2
#define SPI_OPM_RX_EXTN SPI_OPM_RX_AS | SPI_OPM_RX_DOUT | SPI_OPM_RX_DIO
/* Header byte that marks the start of the message */
#define SPI_PREAMBLE_END_BYTE 0xec
@ -43,6 +49,7 @@
*
* @bus: ID of the bus that the slave is attached to.
* @cs: ID of the chip select connected to the slave.
* @op_mode_rx: SPI RX operation mode.
* @wordlen: Size of SPI word in number of bits
* @max_write_size: If non-zero, the maximum number of bytes which can
* be written at once, excluding command bytes.
@ -51,6 +58,7 @@
struct spi_slave {
unsigned int bus;
unsigned int cs;
u8 op_mode_rx;
unsigned int wordlen;
unsigned int max_write_size;
void *memory_map;

10
include/spi_flash.h
View file

@ -19,6 +19,14 @@
#include <linux/types.h>
#include <linux/compiler.h>
/* Enum list - Extended read commands */
enum spi_read_cmds {
ARRAY_SLOW = 1 << 0,
DUAL_OUTPUT_FAST = 1 << 1,
DUAL_IO_FAST = 1 << 2,
};
#define RD_EXTN ARRAY_SLOW | DUAL_OUTPUT_FAST | DUAL_IO_FAST
/**
* struct spi_flash - SPI flash structure
*
@ -33,6 +41,7 @@
* @bank_curr: Current flash bank
* @poll_cmd: Poll cmd - for flash erase/program
* @erase_cmd: Erase cmd 4K, 32K, 64K
* @read_cmd: Read cmd - Array Fast and Extn read
* @memory_map: Address of read-only SPI flash access
* @read: Flash read ops: Read len bytes at offset into buf
* Supported cmds: Fast Array Read
@ -57,6 +66,7 @@ struct spi_flash {
#endif
u8 poll_cmd;
u8 erase_cmd;
u8 read_cmd;
void *memory_map;
int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf);