[U-Boot] [PATCH 2/4 v2] sf: unify write funcs
Mike Frysinger
vapier at gentoo.org
Mon Apr 25 18:58:29 CEST 2011
Once we add a new page_size field for write lengths, we can unify the
write methods for most of the spi flash drivers.
Signed-off-by: Mike Frysinger <vapier at gentoo.org>
---
v2
- push page program command into common code too since all spi
flashes use the same one (0x02)
drivers/mtd/spi/eon.c | 66 +------------------------------
drivers/mtd/spi/macronix.c | 66 +------------------------------
drivers/mtd/spi/spansion.c | 66 +------------------------------
drivers/mtd/spi/spi_flash.c | 57 +++++++++++++++++++++++++++
drivers/mtd/spi/spi_flash_internal.h | 8 ++++
drivers/mtd/spi/stmicro.c | 66 +------------------------------
drivers/mtd/spi/winbond.c | 71 +--------------------------------
include/spi_flash.h | 5 ++-
8 files changed, 80 insertions(+), 325 deletions(-)
diff --git a/drivers/mtd/spi/eon.c b/drivers/mtd/spi/eon.c
index 6826708..036855b 100644
--- a/drivers/mtd/spi/eon.c
+++ b/drivers/mtd/spi/eon.c
@@ -56,69 +56,6 @@ static const struct eon_spi_flash_params eon_spi_flash_table[] = {
},
};
-static int eon_write(struct spi_flash *flash,
- u32 offset, size_t len, const void *buf)
-{
- struct eon_spi_flash *eon = to_eon_spi_flash(flash);
- unsigned long page_addr;
- unsigned long byte_addr;
- unsigned long page_size;
- size_t chunk_len;
- size_t actual;
- int ret;
- u8 cmd[4];
-
- page_size = eon->params->page_size;
- page_addr = offset / page_size;
- byte_addr = offset % page_size;
-
- ret = spi_claim_bus(flash->spi);
- if (ret) {
- debug("SF: Unable to claim SPI bus\n");
- return ret;
- }
-
- ret = 0;
- for (actual = 0; actual < len; actual += chunk_len) {
- chunk_len = min(len - actual, page_size - byte_addr);
-
- cmd[0] = CMD_EN25Q128_PP;
- cmd[1] = page_addr >> 8;
- cmd[2] = page_addr;
- cmd[3] = byte_addr;
-
- debug
- ("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
- buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
-
- ret = spi_flash_cmd_write_enable(flash);
- if (ret < 0) {
- debug("SF: Enabling Write failed\n");
- break;
- }
-
- ret = spi_flash_cmd_write(flash->spi, cmd, 4,
- buf + actual, chunk_len);
- if (ret < 0) {
- debug("SF: EON Page Program failed\n");
- break;
- }
-
- ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
- if (ret)
- break;
-
- page_addr++;
- byte_addr = 0;
- }
-
- debug("SF: EON: Successfully programmed %u bytes @ 0x%x\n",
- len, offset);
-
- spi_release_bus(flash->spi);
- return ret;
-}
-
static int eon_erase(struct spi_flash *flash, u32 offset, size_t len)
{
return spi_flash_cmd_erase(flash, CMD_EN25Q128_BE, offset, len);
@@ -151,9 +88,10 @@ struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode)
eon->flash.spi = spi;
eon->flash.name = params->name;
- eon->flash.write = eon_write;
+ eon->flash.write = spi_flash_cmd_write_multi;
eon->flash.erase = eon_erase;
eon->flash.read = spi_flash_cmd_read_fast;
+ eon->flash.page_size = params->page_size;
eon->flash.sector_size = params->page_size * params->pages_per_sector
* params->sectors_per_block;
eon->flash.size = params->page_size * params->pages_per_sector
diff --git a/drivers/mtd/spi/macronix.c b/drivers/mtd/spi/macronix.c
index f1c2bbb..cb06476 100644
--- a/drivers/mtd/spi/macronix.c
+++ b/drivers/mtd/spi/macronix.c
@@ -128,69 +128,6 @@ static const struct macronix_spi_flash_params macronix_spi_flash_table[] = {
},
};
-static int macronix_write(struct spi_flash *flash,
- u32 offset, size_t len, const void *buf)
-{
- struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash);
- unsigned long page_addr;
- unsigned long byte_addr;
- unsigned long page_size;
- size_t chunk_len;
- size_t actual;
- int ret;
- u8 cmd[4];
-
- page_size = mcx->params->page_size;
- page_addr = offset / page_size;
- byte_addr = offset % page_size;
-
- ret = spi_claim_bus(flash->spi);
- if (ret) {
- debug("SF: Unable to claim SPI bus\n");
- return ret;
- }
-
- ret = 0;
- for (actual = 0; actual < len; actual += chunk_len) {
- chunk_len = min(len - actual, page_size - byte_addr);
-
- cmd[0] = CMD_MX25XX_PP;
- cmd[1] = page_addr >> 8;
- cmd[2] = page_addr;
- cmd[3] = byte_addr;
-
- debug
- ("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
- buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
-
- ret = spi_flash_cmd_write_enable(flash);
- if (ret < 0) {
- debug("SF: Enabling Write failed\n");
- break;
- }
-
- ret = spi_flash_cmd_write(flash->spi, cmd, 4,
- buf + actual, chunk_len);
- if (ret < 0) {
- debug("SF: Macronix Page Program failed\n");
- break;
- }
-
- ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
- if (ret)
- break;
-
- page_addr++;
- byte_addr = 0;
- }
-
- debug("SF: Macronix: Successfully programmed %u bytes @ 0x%x\n",
- len, offset);
-
- spi_release_bus(flash->spi);
- return ret;
-}
-
static int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
{
return spi_flash_cmd_erase(flash, CMD_MX25XX_BE, offset, len);
@@ -224,9 +161,10 @@ struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
mcx->flash.spi = spi;
mcx->flash.name = params->name;
- mcx->flash.write = macronix_write;
+ mcx->flash.write = spi_flash_cmd_write_multi;
mcx->flash.erase = macronix_erase;
mcx->flash.read = spi_flash_cmd_read_fast;
+ mcx->flash.page_size = params->page_size;
mcx->flash.sector_size = params->page_size * params->pages_per_sector
* params->sectors_per_block;
mcx->flash.size = mcx->flash.sector_size * params->nr_blocks;
diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c
index 9dbab5d..1ef8c82 100644
--- a/drivers/mtd/spi/spansion.c
+++ b/drivers/mtd/spi/spansion.c
@@ -142,69 +142,6 @@ static const struct spansion_spi_flash_params spansion_spi_flash_table[] = {
},
};
-static int spansion_write(struct spi_flash *flash,
- u32 offset, size_t len, const void *buf)
-{
- struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash);
- unsigned long page_addr;
- unsigned long byte_addr;
- unsigned long page_size;
- size_t chunk_len;
- size_t actual;
- int ret;
- u8 cmd[4];
-
- page_size = spsn->params->page_size;
- page_addr = offset / page_size;
- byte_addr = offset % page_size;
-
- ret = spi_claim_bus(flash->spi);
- if (ret) {
- debug("SF: Unable to claim SPI bus\n");
- return ret;
- }
-
- ret = 0;
- for (actual = 0; actual < len; actual += chunk_len) {
- chunk_len = min(len - actual, page_size - byte_addr);
-
- cmd[0] = CMD_S25FLXX_PP;
- cmd[1] = page_addr >> 8;
- cmd[2] = page_addr;
- cmd[3] = byte_addr;
-
- debug
- ("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
- buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
-
- ret = spi_flash_cmd_write_enable(flash);
- if (ret < 0) {
- debug("SF: Enabling Write failed\n");
- break;
- }
-
- ret = spi_flash_cmd_write(flash->spi, cmd, 4,
- buf + actual, chunk_len);
- if (ret < 0) {
- debug("SF: SPANSION Page Program failed\n");
- break;
- }
-
- ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
- if (ret)
- break;
-
- page_addr++;
- byte_addr = 0;
- }
-
- debug("SF: SPANSION: Successfully programmed %u bytes @ 0x%x\n",
- len, offset);
-
- spi_release_bus(flash->spi);
- return ret;
-}
-
static int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
{
return spi_flash_cmd_erase(flash, CMD_S25FLXX_SE, offset, len);
@@ -243,9 +180,10 @@ struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
spsn->flash.spi = spi;
spsn->flash.name = params->name;
- spsn->flash.write = spansion_write;
+ spsn->flash.write = spi_flash_cmd_write_multi;
spsn->flash.erase = spansion_erase;
spsn->flash.read = spi_flash_cmd_read_fast;
+ spsn->flash.page_size = params->page_size;
spsn->flash.sector_size = params->page_size * params->pages_per_sector;
spsn->flash.size = spsn->flash.sector_size * params->nr_sectors;
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 3e0d02d..730c009 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -65,6 +65,63 @@ int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len);
}
+int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset,
+ size_t len, const void *buf)
+{
+ unsigned long page_addr, byte_addr, page_size;
+ size_t chunk_len, actual;
+ int ret;
+ u8 cmd[4];
+
+ page_size = flash->page_size;
+ page_addr = offset / page_size;
+ byte_addr = offset % page_size;
+
+ ret = spi_claim_bus(flash->spi);
+ if (ret) {
+ debug("SF: unable to claim SPI bus\n");
+ return ret;
+ }
+
+ cmd[0] = CMD_PAGE_PROGRAM;
+ for (actual = 0; actual < len; actual += chunk_len) {
+ chunk_len = min(len - actual, page_size - byte_addr);
+
+ cmd[1] = page_addr >> 8;
+ cmd[2] = page_addr;
+ cmd[3] = byte_addr;
+
+ debug("PP: 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);
+
+ ret = spi_flash_cmd_write_enable(flash);
+ if (ret < 0) {
+ debug("SF: enabling write failed\n");
+ break;
+ }
+
+ ret = spi_flash_cmd_write(flash->spi, cmd, 4,
+ buf + actual, chunk_len);
+ if (ret < 0) {
+ debug("SF: write failed\n");
+ break;
+ }
+
+ ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
+ if (ret)
+ break;
+
+ page_addr++;
+ byte_addr = 0;
+ }
+
+ debug("SF: program %s %zu bytes @ %#x\n",
+ ret ? "failure" : "success", len, offset);
+
+ spi_release_bus(flash->spi);
+ return ret;
+}
+
int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd,
size_t cmd_len, void *data, size_t data_len)
{
diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h
index 6665bed..f80f717 100644
--- a/drivers/mtd/spi/spi_flash_internal.h
+++ b/drivers/mtd/spi/spi_flash_internal.h
@@ -19,6 +19,7 @@
#define CMD_READ_ARRAY_FAST 0x0b
#define CMD_READ_ARRAY_LEGACY 0xe8
+#define CMD_PAGE_PROGRAM 0x02
#define CMD_READ_STATUS 0x05
#define CMD_WRITE_ENABLE 0x06
@@ -46,6 +47,13 @@ int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
const void *data, size_t data_len);
/*
+ * Write the requested data out breaking it up into multiple write
+ * commands as needed per the write size.
+ */
+int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset,
+ size_t len, const void *buf);
+
+/*
* Enable writing on the SPI flash.
*/
static inline int spi_flash_cmd_write_enable(struct spi_flash *flash)
diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c
index 80d97b4..8106e7c 100644
--- a/drivers/mtd/spi/stmicro.c
+++ b/drivers/mtd/spi/stmicro.c
@@ -134,69 +134,6 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
},
};
-static int stmicro_write(struct spi_flash *flash,
- u32 offset, size_t len, const void *buf)
-{
- struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
- unsigned long page_addr;
- unsigned long byte_addr;
- unsigned long page_size;
- size_t chunk_len;
- size_t actual;
- int ret;
- u8 cmd[4];
-
- page_size = stm->params->page_size;
- page_addr = offset / page_size;
- byte_addr = offset % page_size;
-
- ret = spi_claim_bus(flash->spi);
- if (ret) {
- debug("SF: Unable to claim SPI bus\n");
- return ret;
- }
-
- ret = 0;
- for (actual = 0; actual < len; actual += chunk_len) {
- chunk_len = min(len - actual, page_size - byte_addr);
-
- cmd[0] = CMD_M25PXX_PP;
- cmd[1] = page_addr >> 8;
- cmd[2] = page_addr;
- cmd[3] = byte_addr;
-
- debug
- ("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
- buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
-
- ret = spi_flash_cmd_write_enable(flash);
- if (ret < 0) {
- debug("SF: Enabling Write failed\n");
- break;
- }
-
- ret = spi_flash_cmd_write(flash->spi, cmd, 4,
- buf + actual, chunk_len);
- if (ret < 0) {
- debug("SF: STMicro Page Program failed\n");
- break;
- }
-
- ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
- if (ret)
- break;
-
- page_addr++;
- byte_addr = 0;
- }
-
- debug("SF: STMicro: Successfully programmed %u bytes @ 0x%x\n",
- len, offset);
-
- spi_release_bus(flash->spi);
- return ret;
-}
-
static int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len)
{
return spi_flash_cmd_erase(flash, CMD_M25PXX_SE, offset, len);
@@ -243,9 +180,10 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
stm->flash.spi = spi;
stm->flash.name = params->name;
- stm->flash.write = stmicro_write;
+ stm->flash.write = spi_flash_cmd_write_multi;
stm->flash.erase = stmicro_erase;
stm->flash.read = spi_flash_cmd_read_fast;
+ stm->flash.page_size = params->page_size;
stm->flash.sector_size = params->page_size * params->pages_per_sector;
stm->flash.size = stm->flash.sector_size * params->nr_sectors;
diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c
index 10fabf5..3db0cb0 100644
--- a/drivers/mtd/spi/winbond.c
+++ b/drivers/mtd/spi/winbond.c
@@ -105,71 +105,6 @@ static const struct winbond_spi_flash_params winbond_spi_flash_table[] = {
},
};
-static int winbond_write(struct spi_flash *flash,
- u32 offset, size_t len, const void *buf)
-{
- struct winbond_spi_flash *stm = to_winbond_spi_flash(flash);
- unsigned long page_addr;
- unsigned long byte_addr;
- unsigned long page_size;
- unsigned int page_shift;
- size_t chunk_len;
- size_t actual;
- int ret;
- u8 cmd[4];
-
- page_shift = stm->params->l2_page_size;
- page_size = (1 << page_shift);
- page_addr = offset / page_size;
- byte_addr = offset % page_size;
-
- ret = spi_claim_bus(flash->spi);
- if (ret) {
- debug("SF: Unable to claim SPI bus\n");
- return ret;
- }
-
- for (actual = 0; actual < len; actual += chunk_len) {
- chunk_len = min(len - actual, page_size - byte_addr);
-
- cmd[0] = CMD_W25_PP;
- cmd[1] = page_addr >> (16 - page_shift);
- cmd[2] = page_addr << (page_shift - 8) | (byte_addr >> 8);
- cmd[3] = byte_addr;
- debug("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
- buf + actual,
- cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
-
- ret = spi_flash_cmd_write_enable(flash);
- if (ret < 0) {
- debug("SF: Enabling Write failed\n");
- goto out;
- }
-
- ret = spi_flash_cmd_write(flash->spi, cmd, 4,
- buf + actual, chunk_len);
- if (ret < 0) {
- debug("SF: Winbond Page Program failed\n");
- goto out;
- }
-
- ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
- if (ret)
- goto out;
-
- page_addr++;
- byte_addr = 0;
- }
-
- debug("SF: Winbond: Successfully programmed %u bytes @ 0x%x\n",
- len, offset);
- ret = 0;
-
-out:
- spi_release_bus(flash->spi);
- return ret;
-}
-
static int winbond_erase(struct spi_flash *flash, u32 offset, size_t len)
{
return spi_flash_cmd_erase(flash, CMD_W25_SE, offset, len);
@@ -207,11 +142,11 @@ struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
/* Assuming power-of-two page size initially. */
page_size = 1 << params->l2_page_size;
- stm->flash.write = winbond_write;
+ stm->flash.write = spi_flash_cmd_write_multi;
stm->flash.erase = winbond_erase;
stm->flash.read = spi_flash_cmd_read_fast;
- stm->flash.sector_size = (1 << stm->params->l2_page_size) *
- stm->params->pages_per_sector;
+ stm->flash.page_size = page_size;
+ stm->flash.sector_size = page_size * stm->params->pages_per_sector;
stm->flash.size = page_size * params->pages_per_sector
* params->sectors_per_block
* params->nr_blocks;
diff --git a/include/spi_flash.h b/include/spi_flash.h
index a384071..2671ab5 100644
--- a/include/spi_flash.h
+++ b/include/spi_flash.h
@@ -31,8 +31,11 @@ struct spi_flash {
const char *name;
+ /* Total flash size */
u32 size;
-
+ /* Write (page) size */
+ u32 page_size;
+ /* Erase (sector) size */
u32 sector_size;
int (*read)(struct spi_flash *flash, u32 offset,
--
1.7.5.rc1
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