[U-Boot] [PATCH v3 2/8] sf: describe all SPI flash commands with 'struct spi_flash_command'
Wenyou Yang
wenyou.yang at microchip.com
Tue Jul 25 07:00:56 UTC 2017
From: Cyrille Pitchen <cyrille.pitchen at atmel.com>
Now that the SPI sub-system API has been extended with
'struct spi_flash_command' and spi_is_flash_command_supported() /
spi_exec_flash_command() functions, we update the SPI FLASH sub-system to
use this new API.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen at atmel.com>
Signed-off-by: Wenyou Yang <wenyou.yang at microchip.com>
---
Changes in v3: None
Changes in v2: None
drivers/mtd/spi/sf.c | 78 +++++++++++++----
drivers/mtd/spi/sf_dataflash.c | 119 +++++++++++++-------------
drivers/mtd/spi/sf_internal.h | 24 +++---
drivers/mtd/spi/spi_flash.c | 184 +++++++++++++++++++++++------------------
4 files changed, 236 insertions(+), 169 deletions(-)
diff --git a/drivers/mtd/spi/sf.c b/drivers/mtd/spi/sf.c
index d5e175ca00..6178b0aa98 100644
--- a/drivers/mtd/spi/sf.c
+++ b/drivers/mtd/spi/sf.c
@@ -9,46 +9,88 @@
#include <common.h>
#include <spi.h>
+#include <spi_flash.h>
-static int spi_flash_read_write(struct spi_slave *spi,
- const u8 *cmd, size_t cmd_len,
- const u8 *data_out, u8 *data_in,
- size_t data_len)
+#include "sf_internal.h"
+
+static void spi_flash_addr(u32 addr, u8 addr_len, u8 *cmd_buf)
{
+ u8 i;
+
+ for (i = 0; i < addr_len; i++)
+ cmd_buf[i] = addr >> ((addr_len - 1 - i) * 8);
+}
+
+static u8 spi_compute_num_dummy_bytes(enum spi_flash_protocol proto,
+ u8 num_dummy_clock_cycles)
+{
+ int shift = fls(spi_flash_protocol_get_addr_nbits(proto)) - 1;
+
+ if (shift < 0)
+ shift = 0;
+ return (num_dummy_clock_cycles << shift) >> 3;
+}
+
+static int spi_flash_exec(struct spi_flash *flash,
+ const struct spi_flash_command *cmd)
+{
+ struct spi_slave *spi = flash->spi;
+ u8 cmd_buf[SPI_FLASH_CMD_LEN];
+ size_t cmd_len, num_dummy_bytes;
unsigned long flags = SPI_XFER_BEGIN;
int ret;
- if (data_len == 0)
+ if (spi_is_flash_command_supported(spi, cmd))
+ return spi_exec_flash_command(spi, cmd);
+
+ if (cmd->data_len == 0)
flags |= SPI_XFER_END;
- ret = spi_xfer(spi, cmd_len * 8, cmd, NULL, flags);
+ cmd_buf[0] = cmd->inst;
+ spi_flash_addr(cmd->addr, cmd->addr_len, cmd_buf + 1);
+ cmd_len = 1 + cmd->addr_len;
+
+ num_dummy_bytes = spi_compute_num_dummy_bytes(cmd->proto,
+ cmd->num_mode_cycles +
+ cmd->num_wait_states);
+ memset(cmd_buf + cmd_len, 0xff, num_dummy_bytes);
+ cmd_len += num_dummy_bytes;
+
+ ret = spi_xfer(spi, cmd_len * 8, cmd_buf, NULL, flags);
if (ret) {
debug("SF: Failed to send command (%zu bytes): %d\n",
cmd_len, ret);
- } else if (data_len != 0) {
- ret = spi_xfer(spi, data_len * 8, data_out, data_in,
- SPI_XFER_END);
+ } else if (cmd->data_len != 0) {
+ ret = spi_xfer(spi, cmd->data_len * 8,
+ cmd->tx_data, cmd->rx_data,
+ SPI_XFER_END);
if (ret)
debug("SF: Failed to transfer %zu bytes of data: %d\n",
- data_len, ret);
+ cmd->data_len, ret);
}
return ret;
}
-int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
- size_t cmd_len, void *data, size_t data_len)
+int spi_flash_cmd_read(struct spi_flash *flash,
+ const struct spi_flash_command *cmd)
{
- return spi_flash_read_write(spi, cmd, cmd_len, NULL, data, data_len);
+ return spi_flash_exec(flash, cmd);
}
-int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len)
+int spi_flash_cmd(struct spi_flash *flash, u8 instr, void *response, size_t len)
{
- return spi_flash_cmd_read(spi, &cmd, 1, response, len);
+ struct spi_flash_command cmd;
+ u8 flags = (response && len) ? SPI_FCMD_READ_REG : SPI_FCMD_WRITE_REG;
+
+ spi_flash_command_init(&cmd, instr, 0, flags);
+ cmd.data_len = len;
+ cmd.rx_data = response;
+ return spi_flash_exec(flash, &cmd);
}
-int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
- const void *data, size_t data_len)
+int spi_flash_cmd_write(struct spi_flash *flash,
+ const struct spi_flash_command *cmd)
{
- return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len);
+ return spi_flash_exec(flash, cmd);
}
diff --git a/drivers/mtd/spi/sf_dataflash.c b/drivers/mtd/spi/sf_dataflash.c
index bcddfa0755..b2166ad4e5 100644
--- a/drivers/mtd/spi/sf_dataflash.c
+++ b/drivers/mtd/spi/sf_dataflash.c
@@ -73,7 +73,7 @@ struct dataflash {
};
/* Return the status of the DataFlash device */
-static inline int dataflash_status(struct spi_slave *spi)
+static inline int dataflash_status(struct spi_flash *spi_flash)
{
int ret;
u8 status;
@@ -81,7 +81,7 @@ static inline int dataflash_status(struct spi_slave *spi)
* NOTE: at45db321c over 25 MHz wants to write
* a dummy byte after the opcode...
*/
- ret = spi_flash_cmd(spi, OP_READ_STATUS, &status, 1);
+ ret = spi_flash_cmd(spi_flash, OP_READ_STATUS, &status, 1);
return ret ? -EIO : status;
}
@@ -90,7 +90,7 @@ static inline int dataflash_status(struct spi_slave *spi)
* This usually takes 5-20 msec or so; more for sector erase.
* ready: return > 0
*/
-static int dataflash_waitready(struct spi_slave *spi)
+static int dataflash_waitready(struct spi_flash *spi_flash)
{
int status;
int timeout = 2 * CONFIG_SYS_HZ;
@@ -98,7 +98,7 @@ static int dataflash_waitready(struct spi_slave *spi)
timebase = get_timer(0);
do {
- status = dataflash_status(spi);
+ status = dataflash_status(spi_flash);
if (status < 0)
status = 0;
@@ -114,11 +114,11 @@ static int dataflash_waitready(struct spi_slave *spi)
/* Erase pages of flash */
static int spi_dataflash_erase(struct udevice *dev, u32 offset, size_t len)
{
+ struct spi_flash_command cmd;
struct dataflash *dataflash;
struct spi_flash *spi_flash;
struct spi_slave *spi;
unsigned blocksize;
- uint8_t *command;
uint32_t rem;
int status;
@@ -128,9 +128,6 @@ static int spi_dataflash_erase(struct udevice *dev, u32 offset, size_t len)
blocksize = spi_flash->page_size << 3;
- memset(dataflash->command, 0 , sizeof(dataflash->command));
- command = dataflash->command;
-
debug("%s: erase addr=0x%x len 0x%x\n", dev->name, offset, len);
div_u64_rem(len, spi_flash->page_size, &rem);
@@ -146,6 +143,8 @@ static int spi_dataflash_erase(struct udevice *dev, u32 offset, size_t len)
return status;
}
+ spi_flash_command_init(&cmd, OP_ERASE_BLOCK, SPI_FLASH_3B_ADDR_LEN,
+ SPI_FCMD_ERASE);
while (len > 0) {
unsigned int pageaddr;
int do_block;
@@ -157,23 +156,24 @@ static int spi_dataflash_erase(struct udevice *dev, u32 offset, size_t len)
do_block = (pageaddr & 0x7) == 0 && len >= blocksize;
pageaddr = pageaddr << dataflash->page_offset;
- command[0] = do_block ? OP_ERASE_BLOCK : OP_ERASE_PAGE;
- command[1] = (uint8_t)(pageaddr >> 16);
- command[2] = (uint8_t)(pageaddr >> 8);
- command[3] = 0;
+ cmd.inst = do_block ? OP_ERASE_BLOCK : OP_ERASE_PAGE;
+ cmd.addr = pageaddr & 0x00FFFF00;
debug("%s ERASE %s: (%x) %x %x %x [%d]\n",
dev->name, do_block ? "block" : "page",
- command[0], command[1], command[2], command[3],
+ cmd.inst,
+ (cmd.addr >> 16) & 0xff,
+ (cmd.addr >> 8) & 0xff,
+ (cmd.addr >> 0) & 0xff,
pageaddr);
- status = spi_flash_cmd_write(spi, command, 4, NULL, 0);
+ status = spi_flash_cmd_write(spi_flash, &cmd);
if (status < 0) {
debug("%s: erase send command error!\n", dev->name);
return -EIO;
}
- status = dataflash_waitready(spi);
+ status = dataflash_waitready(spi_flash);
if (status < 0) {
debug("%s: erase waitready error!\n", dev->name);
return status;
@@ -202,23 +202,18 @@ static int spi_dataflash_erase(struct udevice *dev, u32 offset, size_t len)
static int spi_dataflash_read(struct udevice *dev, u32 offset, size_t len,
void *buf)
{
+ struct spi_flash_command cmd;
struct dataflash *dataflash;
struct spi_flash *spi_flash;
struct spi_slave *spi;
unsigned int addr;
- uint8_t *command;
int status;
dataflash = dev_get_priv(dev);
spi_flash = dev_get_uclass_priv(dev);
spi = spi_flash->spi;
- memset(dataflash->command, 0 , sizeof(dataflash->command));
- command = dataflash->command;
-
- debug("%s: erase addr=0x%x len 0x%x\n", dev->name, offset, len);
- debug("READ: (%x) %x %x %x\n",
- command[0], command[1], command[2], command[3]);
+ debug("%s: read addr=0x%x len 0x%x\n", dev->name, offset, len);
/* Calculate flash page/byte address */
addr = (((unsigned)offset / spi_flash->page_size)
@@ -236,13 +231,15 @@ static int spi_dataflash_read(struct udevice *dev, u32 offset, size_t len,
* the peak rate available. Some chips support commands with
* fewer "don't care" bytes. Both buffers stay unchanged.
*/
- command[0] = OP_READ_CONTINUOUS;
- command[1] = (uint8_t)(addr >> 16);
- command[2] = (uint8_t)(addr >> 8);
- command[3] = (uint8_t)(addr >> 0);
+ spi_flash_command_init(&cmd, OP_READ_CONTINUOUS, SPI_FLASH_3B_ADDR_LEN,
+ SPI_FCMD_READ);
+ cmd.addr = addr;
+ cmd.num_wait_states = 4 * 8; /* 4 "don't care" bytes */
+ cmd.data_len = len;
+ cmd.rx_data = buf;
/* plus 4 "don't care" bytes, command len: 4 + 4 "don't care" bytes */
- status = spi_flash_cmd_read(spi, command, 8, buf, len);
+ status = spi_flash_cmd_read(spi_flash, &cmd);
spi_release_bus(spi);
@@ -258,10 +255,10 @@ static int spi_dataflash_read(struct udevice *dev, u32 offset, size_t len,
int spi_dataflash_write(struct udevice *dev, u32 offset, size_t len,
const void *buf)
{
+ struct spi_flash_command cmd;
struct dataflash *dataflash;
struct spi_flash *spi_flash;
struct spi_slave *spi;
- uint8_t *command;
unsigned int pageaddr, addr, to, writelen;
size_t remaining = len;
u_char *writebuf = (u_char *)buf;
@@ -271,9 +268,6 @@ int spi_dataflash_write(struct udevice *dev, u32 offset, size_t len,
spi_flash = dev_get_uclass_priv(dev);
spi = spi_flash->spi;
- memset(dataflash->command, 0 , sizeof(dataflash->command));
- command = dataflash->command;
-
debug("%s: write 0x%x..0x%x\n", dev->name, offset, (offset + len));
pageaddr = ((unsigned)offset / spi_flash->page_size);
@@ -289,6 +283,8 @@ int spi_dataflash_write(struct udevice *dev, u32 offset, size_t len,
return status;
}
+ spi_flash_command_init(&cmd, OP_TRANSFER_BUF1, SPI_FLASH_3B_ADDR_LEN,
+ SPI_FCMD_WRITE);
while (remaining > 0) {
debug("write @ %d:%d len=%d\n", pageaddr, to, writelen);
@@ -313,22 +309,25 @@ int spi_dataflash_write(struct udevice *dev, u32 offset, size_t len,
/* (1) Maybe transfer partial page to Buffer1 */
if (writelen != spi_flash->page_size) {
- command[0] = OP_TRANSFER_BUF1;
- command[1] = (addr & 0x00FF0000) >> 16;
- command[2] = (addr & 0x0000FF00) >> 8;
- command[3] = 0;
+ cmd.inst = OP_TRANSFER_BUF1;
+ cmd.addr = (addr & 0x00FFFF00);
+ cmd.data_len = 0;
+ cmd.tx_data = NULL;
debug("TRANSFER: (%x) %x %x %x\n",
- command[0], command[1], command[2], command[3]);
+ cmd.inst,
+ (cmd.addr >> 16) & 0xff,
+ (cmd.addr >> 8) & 0xff,
+ (cmd.addr >> 0) & 0xff);
- status = spi_flash_cmd_write(spi, command, 4, NULL, 0);
+ status = spi_flash_cmd_write(spi_flash, &cmd);
if (status < 0) {
debug("%s: write(<pagesize) command error!\n",
dev->name);
return -EIO;
}
- status = dataflash_waitready(spi);
+ status = dataflash_waitready(spi_flash);
if (status < 0) {
debug("%s: write(<pagesize) waitready error!\n",
dev->name);
@@ -338,22 +337,24 @@ int spi_dataflash_write(struct udevice *dev, u32 offset, size_t len,
/* (2) Program full page via Buffer1 */
addr += to;
- command[0] = OP_PROGRAM_VIA_BUF1;
- command[1] = (addr & 0x00FF0000) >> 16;
- command[2] = (addr & 0x0000FF00) >> 8;
- command[3] = (addr & 0x000000FF);
+ cmd.inst = OP_PROGRAM_VIA_BUF1;
+ cmd.addr = addr;
+ cmd.data_len = writelen;
+ cmd.tx_data = writebuf;
debug("PROGRAM: (%x) %x %x %x\n",
- command[0], command[1], command[2], command[3]);
+ cmd.inst,
+ (cmd.addr >> 16) & 0xff,
+ (cmd.addr >> 8) & 0xff,
+ (cmd.addr >> 0) & 0xff);
- status = spi_flash_cmd_write(spi, command,
- 4, writebuf, writelen);
+ status = spi_flash_cmd_write(spi_flash, &cmd);
if (status < 0) {
debug("%s: write send command error!\n", dev->name);
return -EIO;
}
- status = dataflash_waitready(spi);
+ status = dataflash_waitready(spi_flash);
if (status < 0) {
debug("%s: write waitready error!\n", dev->name);
return status;
@@ -362,16 +363,18 @@ int spi_dataflash_write(struct udevice *dev, u32 offset, size_t len,
#ifdef CONFIG_SPI_DATAFLASH_WRITE_VERIFY
/* (3) Compare to Buffer1 */
addr = pageaddr << dataflash->page_offset;
- command[0] = OP_COMPARE_BUF1;
- command[1] = (addr & 0x00FF0000) >> 16;
- command[2] = (addr & 0x0000FF00) >> 8;
- command[3] = 0;
+ cmd.inst = OP_COMPARE_BUF1;
+ cmd.addr = addr & 0x00FFFF00;
+ cmd.data_len = writelen;
+ cmd.tx_data = writebuf;
debug("COMPARE: (%x) %x %x %x\n",
- command[0], command[1], command[2], command[3]);
+ cmd.inst,
+ (cmd.addr >> 16) & 0xff,
+ (cmd.addr >> 8) & 0xff,
+ (cmd.addr >> 0) & 0xff);
- status = spi_flash_cmd_write(spi, command,
- 4, writebuf, writelen);
+ status = spi_flash_cmd_write(spi, &cmd);
if (status < 0) {
debug("%s: write(compare) send command error!\n",
dev->name);
@@ -496,7 +499,7 @@ static struct flash_info dataflash_data[] = {
{ "at45db642d", 0x1f2800, 8192, 1024, 10, SUP_POW2PS | IS_POW2PS},
};
-static struct flash_info *jedec_probe(struct spi_slave *spi)
+static struct flash_info *jedec_probe(struct spi_flash *spi_flash)
{
int tmp;
uint8_t id[5];
@@ -513,7 +516,7 @@ static struct flash_info *jedec_probe(struct spi_slave *spi)
* That's not an error; only rev C and newer chips handle it, and
* only Atmel sells these chips.
*/
- tmp = spi_flash_cmd(spi, CMD_READ_ID, id, sizeof(id));
+ tmp = spi_flash_cmd(spi_flash, CMD_READ_ID, id, sizeof(id));
if (tmp < 0) {
printf("dataflash: error %d reading JEDEC ID\n", tmp);
return ERR_PTR(tmp);
@@ -532,7 +535,7 @@ static struct flash_info *jedec_probe(struct spi_slave *spi)
tmp++, info++) {
if (info->jedec_id == jedec) {
if (info->flags & SUP_POW2PS) {
- status = dataflash_status(spi);
+ status = dataflash_status(spi_flash);
if (status < 0) {
debug("dataflash: status error %d\n",
status);
@@ -596,7 +599,7 @@ static int spi_dataflash_probe(struct udevice *dev)
* Both support the security register, though with different
* write procedures.
*/
- info = jedec_probe(spi);
+ info = jedec_probe(spi_flash);
if (IS_ERR(info))
goto err_jedec_probe;
if (info != NULL) {
@@ -611,7 +614,7 @@ static int spi_dataflash_probe(struct udevice *dev)
* Older chips support only legacy commands, identifing
* capacity using bits in the status byte.
*/
- status = dataflash_status(spi);
+ status = dataflash_status(spi_flash);
if (status <= 0 || status == 0xff) {
printf("dataflash: read status error %d\n", status);
if (status == 0 || status == 0xff)
diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h
index 839cdbe1b0..5c551089d6 100644
--- a/drivers/mtd/spi/sf_internal.h
+++ b/drivers/mtd/spi/sf_internal.h
@@ -27,7 +27,7 @@ enum spi_nor_option_flags {
};
#define SPI_FLASH_3B_ADDR_LEN 3
-#define SPI_FLASH_CMD_LEN (1 + SPI_FLASH_3B_ADDR_LEN)
+#define SPI_FLASH_CMD_LEN (1 + SPI_FLASH_3B_ADDR_LEN + 16)
#define SPI_FLASH_16MB_BOUN 0x1000000
/* CFI Manufacture ID's */
@@ -137,21 +137,21 @@ struct spi_flash_info {
extern const struct spi_flash_info spi_flash_ids[];
/* Send a single-byte command to the device and read the response */
-int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
+int spi_flash_cmd(struct spi_flash *flash, u8 instr, void *response, size_t len);
/*
* Send a multi-byte command to the device and read the response. Used
* for flash array reads, etc.
*/
-int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
- size_t cmd_len, void *data, size_t data_len);
+int spi_flash_cmd_read(struct spi_flash *flash,
+ const struct spi_flash_command *cmd);
/*
* Send a multi-byte command to the device followed by (optional)
* data. Used for programming the flash array, etc.
*/
-int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
- const void *data, size_t data_len);
+int spi_flash_cmd_write(struct spi_flash *flash,
+ const struct spi_flash_command *cmd);
/* Flash erase(sectors) operation, support all possible erase commands */
@@ -169,13 +169,13 @@ int stm_is_locked(struct spi_flash *flash, u32 ofs, size_t len);
/* Enable writing on the SPI flash */
static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
{
- return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, NULL, 0);
+ return spi_flash_cmd(flash, CMD_WRITE_ENABLE, NULL, 0);
}
/* Disable writing on the SPI flash */
static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
{
- return spi_flash_cmd(flash->spi, CMD_WRITE_DISABLE, NULL, 0);
+ return spi_flash_cmd(flash, CMD_WRITE_DISABLE, NULL, 0);
}
/*
@@ -186,8 +186,8 @@ static inline int spi_flash_cmd_write_disable(struct spi_flash *flash)
* - spi_flash_wait_till_ready
* - SPI release
*/
-int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
- size_t cmd_len, const void *buf, size_t buf_len);
+int spi_flash_write_common(struct spi_flash *flash,
+ const struct spi_flash_command *cmd);
/*
* Flash write operation, support all possible write commands.
@@ -201,8 +201,8 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
* Same as spi_flash_cmd_read() except it also claims/releases the SPI
* bus. Used as common part of the ->read() operation.
*/
-int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
- size_t cmd_len, void *data, size_t data_len);
+int spi_flash_read_common(struct spi_flash *flash,
+ const struct spi_flash_command *cmd);
/* Flash read operation, support all possible read commands */
int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 0034a28d5f..80541d0ab4 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -22,21 +22,15 @@
DECLARE_GLOBAL_DATA_PTR;
-static void spi_flash_addr(u32 addr, u8 *cmd)
-{
- /* cmd[0] is actual command */
- cmd[1] = addr >> 16;
- cmd[2] = addr >> 8;
- cmd[3] = addr >> 0;
-}
-
static int read_sr(struct spi_flash *flash, u8 *rs)
{
+ struct spi_flash_command cmd;
int ret;
- u8 cmd;
- cmd = CMD_READ_STATUS;
- ret = spi_flash_read_common(flash, &cmd, 1, rs, 1);
+ spi_flash_command_init(&cmd, CMD_READ_STATUS, 0, SPI_FCMD_READ_REG);
+ cmd.data_len = 1;
+ cmd.rx_data = rs;
+ ret = spi_flash_read_common(flash, &cmd);
if (ret < 0) {
debug("SF: fail to read status register\n");
return ret;
@@ -47,10 +41,13 @@ static int read_sr(struct spi_flash *flash, u8 *rs)
static int read_fsr(struct spi_flash *flash, u8 *fsr)
{
+ struct spi_flash_command cmd;
int ret;
- const u8 cmd = CMD_FLAG_STATUS;
- ret = spi_flash_read_common(flash, &cmd, 1, fsr, 1);
+ spi_flash_command_init(&cmd, CMD_FLAG_STATUS, 0, SPI_FCMD_READ_REG);
+ cmd.data_len = 1;
+ cmd.rx_data = fsr;
+ ret = spi_flash_read_common(flash, &cmd);
if (ret < 0) {
debug("SF: fail to read flag status register\n");
return ret;
@@ -61,11 +58,13 @@ static int read_fsr(struct spi_flash *flash, u8 *fsr)
static int write_sr(struct spi_flash *flash, u8 ws)
{
- u8 cmd;
+ struct spi_flash_command cmd;
int ret;
- cmd = CMD_WRITE_STATUS;
- ret = spi_flash_write_common(flash, &cmd, 1, &ws, 1);
+ spi_flash_command_init(&cmd, CMD_WRITE_STATUS, 0, SPI_FCMD_WRITE_REG);
+ cmd.data_len = 1;
+ cmd.tx_data = &ws;
+ ret = spi_flash_write_common(flash, &cmd);
if (ret < 0) {
debug("SF: fail to write status register\n");
return ret;
@@ -77,11 +76,13 @@ static int write_sr(struct spi_flash *flash, u8 ws)
#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND)
static int read_cr(struct spi_flash *flash, u8 *rc)
{
+ struct spi_flash_command cmd;
int ret;
- u8 cmd;
- cmd = CMD_READ_CONFIG;
- ret = spi_flash_read_common(flash, &cmd, 1, rc, 1);
+ spi_flash_command_init(&cmd, CMD_READ_CONFIG, 0, SPI_FCMD_READ_REG);
+ cmd.data_len = 1;
+ cmd.rx_data = rc;
+ ret = spi_flash_read_common(flash, &cmd);
if (ret < 0) {
debug("SF: fail to read config register\n");
return ret;
@@ -92,17 +93,19 @@ static int read_cr(struct spi_flash *flash, u8 *rc)
static int write_cr(struct spi_flash *flash, u8 wc)
{
+ struct spi_flash_command cmd;
u8 data[2];
- u8 cmd;
int ret;
ret = read_sr(flash, &data[0]);
if (ret < 0)
return ret;
- cmd = CMD_WRITE_STATUS;
+ spi_flash_command_init(&cmd, CMD_WRITE_STATUS, 0, SPI_FCMD_WRITE_REG);
+ cmd.data_len = 2;
+ cmd.tx_data = data;
data[1] = wc;
- ret = spi_flash_write_common(flash, &cmd, 1, &data, 2);
+ ret = spi_flash_write_common(flash, &cmd);
if (ret) {
debug("SF: fail to write config register\n");
return ret;
@@ -115,15 +118,19 @@ static int write_cr(struct spi_flash *flash, u8 wc)
#ifdef CONFIG_SPI_FLASH_BAR
static int write_bar(struct spi_flash *flash, u32 offset)
{
- u8 cmd, bank_sel;
+ struct spi_flash_command cmd;
+ u8 bank_sel;
int ret;
bank_sel = offset / (SPI_FLASH_16MB_BOUN << flash->shift);
if (bank_sel == flash->bank_curr)
goto bar_end;
- cmd = flash->bank_write_cmd;
- ret = spi_flash_write_common(flash, &cmd, 1, &bank_sel, 1);
+ spi_flash_command_init(&cmd, flash->bank_write_cmd, 0,
+ SPI_FCMD_WRITE_REG);
+ cmd.data_len = 1;
+ cmd.tx_data = &bank_sel;
+ ret = spi_flash_write_common(flash, &cmd);
if (ret < 0) {
debug("SF: fail to write bank register\n");
return ret;
@@ -136,6 +143,7 @@ bar_end:
static int read_bar(struct spi_flash *flash, const struct spi_flash_info *info)
{
+ struct spi_flash_command cmd;
u8 curr_bank = 0;
int ret;
@@ -152,8 +160,11 @@ static int read_bar(struct spi_flash *flash, const struct spi_flash_info *info)
flash->bank_write_cmd = CMD_EXTNADDR_WREAR;
}
- ret = spi_flash_read_common(flash, &flash->bank_read_cmd, 1,
- &curr_bank, 1);
+ spi_flash_command_init(&cmd, flash->bank_read_cmd, 0,
+ SPI_FCMD_READ_REG);
+ cmd.data_len = 1;
+ cmd.rx_data = &curr_bank;
+ ret = spi_flash_read_common(flash, &cmd);
if (ret) {
debug("SF: fail to read bank addr register\n");
return ret;
@@ -250,14 +261,14 @@ static int spi_flash_wait_till_ready(struct spi_flash *flash,
return -ETIMEDOUT;
}
-int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
- size_t cmd_len, const void *buf, size_t buf_len)
+int spi_flash_write_common(struct spi_flash *flash,
+ const struct spi_flash_command *cmd)
{
struct spi_slave *spi = flash->spi;
unsigned long timeout = SPI_FLASH_PROG_TIMEOUT;
int ret;
- if (buf == NULL)
+ if (cmd->tx_data == NULL)
timeout = SPI_FLASH_PAGE_ERASE_TIMEOUT;
ret = spi_claim_bus(spi);
@@ -272,7 +283,7 @@ int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
return ret;
}
- ret = spi_flash_cmd_write(spi, cmd, cmd_len, buf, buf_len);
+ ret = spi_flash_cmd_write(flash, cmd);
if (ret < 0) {
debug("SF: write cmd failed\n");
return ret;
@@ -293,8 +304,8 @@ int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
{
+ struct spi_flash_command cmd;
u32 erase_size, erase_addr;
- u8 cmd[SPI_FLASH_CMD_LEN];
int ret = -1;
erase_size = flash->erase_size;
@@ -311,7 +322,8 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
}
}
- cmd[0] = flash->erase_cmd;
+ spi_flash_command_init(&cmd, flash->erase_cmd, SPI_FLASH_3B_ADDR_LEN,
+ SPI_FCMD_ERASE);
while (len) {
erase_addr = offset;
@@ -324,12 +336,15 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
if (ret < 0)
return ret;
#endif
- spi_flash_addr(erase_addr, cmd);
+ cmd.addr = erase_addr;
- debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1],
- cmd[2], cmd[3], erase_addr);
+ debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd.inst,
+ (cmd.addr >> 16) & 0xff,
+ (cmd.addr >> 8) & 0xff,
+ (cmd.addr >> 0) & 0xff,
+ erase_addr);
- ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0);
+ ret = spi_flash_write_common(flash, &cmd);
if (ret < 0) {
debug("SF: erase failed\n");
break;
@@ -346,10 +361,10 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
size_t len, const void *buf)
{
struct spi_slave *spi = flash->spi;
+ struct spi_flash_command cmd;
unsigned long byte_addr, page_size;
u32 write_addr;
size_t chunk_len, actual;
- u8 cmd[SPI_FLASH_CMD_LEN];
int ret = -1;
page_size = flash->page_size;
@@ -362,7 +377,8 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
}
}
- cmd[0] = flash->write_cmd;
+ spi_flash_command_init(&cmd, flash->write_cmd, SPI_FLASH_3B_ADDR_LEN,
+ SPI_FCMD_WRITE);
for (actual = 0; actual < len; actual += chunk_len) {
write_addr = offset;
@@ -382,13 +398,18 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
chunk_len = min(chunk_len,
(size_t)spi->max_write_size);
- spi_flash_addr(write_addr, cmd);
+ cmd.addr = write_addr;
+ cmd.data_len = chunk_len;
+ cmd.tx_data = buf + actual;
debug("SF: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n",
- buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
+ buf + actual, cmd.inst,
+ (cmd.addr >> 16) & 0xff,
+ (cmd.addr >> 8) & 0xff,
+ (cmd.addr >> 0) & 0xff,
+ chunk_len);
- ret = spi_flash_write_common(flash, cmd, sizeof(cmd),
- buf + actual, chunk_len);
+ ret = spi_flash_write_common(flash, &cmd);
if (ret < 0) {
debug("SF: write failed\n");
break;
@@ -400,8 +421,8 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
return ret;
}
-int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
- size_t cmd_len, void *data, size_t data_len)
+int spi_flash_read_common(struct spi_flash *flash,
+ const struct spi_flash_command *cmd)
{
struct spi_slave *spi = flash->spi;
int ret;
@@ -412,7 +433,7 @@ int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
return ret;
}
- ret = spi_flash_cmd_read(spi, cmd, cmd_len, data, data_len);
+ ret = spi_flash_cmd_read(flash, cmd);
if (ret < 0) {
debug("SF: read cmd failed\n");
return ret;
@@ -440,7 +461,7 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
size_t len, void *data)
{
struct spi_slave *spi = flash->spi;
- u8 *cmd, cmdsz;
+ struct spi_flash_command cmd;
u32 remain_len, read_len, read_addr;
int bank_sel = 0;
int ret = -1;
@@ -459,14 +480,9 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
return 0;
}
- cmdsz = SPI_FLASH_CMD_LEN + flash->dummy_byte;
- cmd = calloc(1, cmdsz);
- if (!cmd) {
- debug("SF: Failed to allocate cmd\n");
- return -ENOMEM;
- }
-
- cmd[0] = flash->read_cmd;
+ spi_flash_command_init(&cmd, flash->read_cmd, SPI_FLASH_3B_ADDR_LEN,
+ SPI_FCMD_READ);
+ cmd.num_wait_states = flash->dummy_byte * 8;
while (len) {
read_addr = offset;
@@ -487,9 +503,10 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
else
read_len = remain_len;
- spi_flash_addr(read_addr, cmd);
-
- ret = spi_flash_read_common(flash, cmd, cmdsz, data, read_len);
+ cmd.addr = read_addr;
+ cmd.data_len = read_len;
+ cmd.rx_data = data;
+ ret = spi_flash_read_common(flash, &cmd);
if (ret < 0) {
debug("SF: read failed\n");
break;
@@ -500,30 +517,33 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
data += read_len;
}
- free(cmd);
return ret;
}
#ifdef CONFIG_SPI_FLASH_SST
static int sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf)
{
- struct spi_slave *spi = flash->spi;
+ struct spi_flash_command cmd;
int ret;
- u8 cmd[4] = {
- CMD_SST_BP,
- offset >> 16,
- offset >> 8,
- offset,
- };
+ u8 sr = 0xFFu;
+
+ spi_flash_command_init(&cmd, CMD_SST_BP, SPI_FLASH_3B_ADDR_LEN,
+ SPI_FCMD_WRITE);
+ cmd.addr = offset;
+ cmd.data_len = 1;
+ cmd.tx_data = buf;
+#ifdef DEBUG
+ read_sr(flash, &sr);
+#endif
debug("BP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
- spi_w8r8(spi, CMD_READ_STATUS), buf, cmd[0], offset);
+ sr, buf, cmd.inst, offset);
ret = spi_flash_cmd_write_enable(flash);
if (ret)
return ret;
- ret = spi_flash_cmd_write(spi, cmd, sizeof(cmd), buf, 1);
+ ret = spi_flash_cmd_write(flash, &cmd);
if (ret)
return ret;
@@ -534,9 +554,10 @@ int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
const void *buf)
{
struct spi_slave *spi = flash->spi;
- size_t actual, cmd_len;
+ struct spi_flash_command cmd;
+ size_t actual;
int ret;
- u8 cmd[4];
+ u8 sr = 0xFFu;
ret = spi_claim_bus(spi);
if (ret) {
@@ -557,19 +578,20 @@ int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
if (ret)
goto done;
- cmd_len = 4;
- cmd[0] = CMD_SST_AAI_WP;
- cmd[1] = offset >> 16;
- cmd[2] = offset >> 8;
- cmd[3] = offset;
+ spi_flash_command_init(&cmd, CMD_SST_AAI_WP, SPI_FLASH_3B_ADDR_LEN,
+ SPI_FCMD_WRITE);
+ cmd.addr = offset;
+ cmd.data_len = 2;
for (; actual < len - 1; actual += 2) {
+#ifdef DEBUG
+ read_sr(flash, &sr);
+#endif
debug("WP[%02x]: 0x%p => cmd = { 0x%02x 0x%06x }\n",
- spi_w8r8(spi, CMD_READ_STATUS), buf + actual,
- cmd[0], offset);
+ sr, buf + actual, cmd.inst, offset);
- ret = spi_flash_cmd_write(spi, cmd, cmd_len,
- buf + actual, 2);
+ cmd.tx_data = buf + actual;
+ ret = spi_flash_cmd_write(flash, &cmd);
if (ret) {
debug("SF: sst word program failed\n");
break;
@@ -579,7 +601,7 @@ int sst_write_wp(struct spi_flash *flash, u32 offset, size_t len,
if (ret)
break;
- cmd_len = 1;
+ cmd.addr_len = 0;
offset += 2;
}
@@ -869,7 +891,7 @@ static const struct spi_flash_info *spi_flash_read_id(struct spi_flash *flash)
u8 id[SPI_FLASH_MAX_ID_LEN];
const struct spi_flash_info *info;
- tmp = spi_flash_cmd(flash->spi, CMD_READ_ID, id, SPI_FLASH_MAX_ID_LEN);
+ tmp = spi_flash_cmd(flash, CMD_READ_ID, id, SPI_FLASH_MAX_ID_LEN);
if (tmp < 0) {
printf("SF: error %d reading JEDEC ID\n", tmp);
return ERR_PTR(tmp);
--
2.13.0
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