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-rw-r--r--drivers/mtd/devices/bcm47xxsflash.c30
-rw-r--r--drivers/mtd/devices/bcm47xxsflash.h3
-rw-r--r--drivers/mtd/devices/m25p80.c9
-rw-r--r--drivers/mtd/devices/serial_flash_cmds.h7
-rw-r--r--drivers/mtd/devices/st_spi_fsm.c28
5 files changed, 48 insertions, 29 deletions
diff --git a/drivers/mtd/devices/bcm47xxsflash.c b/drivers/mtd/devices/bcm47xxsflash.c
index 514be04c0b6c..e2bd81817df4 100644
--- a/drivers/mtd/devices/bcm47xxsflash.c
+++ b/drivers/mtd/devices/bcm47xxsflash.c
@@ -105,15 +105,33 @@ static int bcm47xxsflash_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
struct bcm47xxsflash *b47s = mtd->priv;
+ size_t orig_len = len;
/* Check address range */
if ((from + len) > mtd->size)
return -EINVAL;
- memcpy_fromio(buf, b47s->window + from, len);
- *retlen = len;
+ /* Read as much as possible using fast MMIO window */
+ if (from < BCM47XXSFLASH_WINDOW_SZ) {
+ size_t memcpy_len;
- return len;
+ memcpy_len = min(len, (size_t)(BCM47XXSFLASH_WINDOW_SZ - from));
+ memcpy_fromio(buf, b47s->window + from, memcpy_len);
+ from += memcpy_len;
+ len -= memcpy_len;
+ buf += memcpy_len;
+ }
+
+ /* Use indirect access for content out of the window */
+ for (; len; len--) {
+ b47s->cc_write(b47s, BCMA_CC_FLASHADDR, from++);
+ bcm47xxsflash_cmd(b47s, OPCODE_ST_READ4B);
+ *buf++ = b47s->cc_read(b47s, BCMA_CC_FLASHDATA);
+ }
+
+ *retlen = orig_len;
+
+ return orig_len;
}
static int bcm47xxsflash_write_st(struct mtd_info *mtd, u32 offset, size_t len,
@@ -284,7 +302,6 @@ static int bcm47xxsflash_bcma_probe(struct platform_device *pdev)
b47s = devm_kzalloc(dev, sizeof(*b47s), GFP_KERNEL);
if (!b47s)
return -ENOMEM;
- sflash->priv = b47s;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
@@ -334,6 +351,8 @@ static int bcm47xxsflash_bcma_probe(struct platform_device *pdev)
b47s->size = sflash->size;
bcm47xxsflash_fill_mtd(b47s, &pdev->dev);
+ platform_set_drvdata(pdev, b47s);
+
err = mtd_device_parse_register(&b47s->mtd, probes, NULL, NULL, 0);
if (err) {
pr_err("Failed to register MTD device: %d\n", err);
@@ -349,8 +368,7 @@ static int bcm47xxsflash_bcma_probe(struct platform_device *pdev)
static int bcm47xxsflash_bcma_remove(struct platform_device *pdev)
{
- struct bcma_sflash *sflash = dev_get_platdata(&pdev->dev);
- struct bcm47xxsflash *b47s = sflash->priv;
+ struct bcm47xxsflash *b47s = platform_get_drvdata(pdev);
mtd_device_unregister(&b47s->mtd);
iounmap(b47s->window);
diff --git a/drivers/mtd/devices/bcm47xxsflash.h b/drivers/mtd/devices/bcm47xxsflash.h
index 1564b62b412e..b2d7b38f75fd 100644
--- a/drivers/mtd/devices/bcm47xxsflash.h
+++ b/drivers/mtd/devices/bcm47xxsflash.h
@@ -3,6 +3,8 @@
#include <linux/mtd/mtd.h>
+#define BCM47XXSFLASH_WINDOW_SZ SZ_16M
+
/* Used for ST flashes only. */
#define OPCODE_ST_WREN 0x0006 /* Write Enable */
#define OPCODE_ST_WRDIS 0x0004 /* Write Disable */
@@ -16,6 +18,7 @@
#define OPCODE_ST_RES 0x03ab /* Read Electronic Signature */
#define OPCODE_ST_CSA 0x1000 /* Keep chip select asserted */
#define OPCODE_ST_SSE 0x0220 /* Sub-sector Erase */
+#define OPCODE_ST_READ4B 0x6313 /* Read Data Bytes in 4Byte addressing mode */
/* Used for Atmel flashes only. */
#define OPCODE_AT_READ 0x07e8
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 9cf7fcd28034..c4df3b1bded0 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -172,7 +172,8 @@ static ssize_t m25p80_read(struct spi_nor *nor, loff_t from, size_t len,
t[1].rx_buf = buf;
t[1].rx_nbits = m25p80_rx_nbits(nor);
- t[1].len = min(len, spi_max_transfer_size(spi));
+ t[1].len = min3(len, spi_max_transfer_size(spi),
+ spi_max_message_size(spi) - t[0].len);
spi_message_add_tail(&t[1], &m);
ret = spi_sync(spi, &m);
@@ -288,7 +289,6 @@ static const struct spi_device_id m25p_ids[] = {
* should be kept for backward compatibility.
*/
{"at25df321a"}, {"at25df641"}, {"at26df081a"},
- {"mr25h256"},
{"mx25l4005a"}, {"mx25l1606e"}, {"mx25l6405d"}, {"mx25l12805d"},
{"mx25l25635e"},{"mx66l51235l"},
{"n25q064"}, {"n25q128a11"}, {"n25q128a13"}, {"n25q512a"},
@@ -305,6 +305,11 @@ static const struct spi_device_id m25p_ids[] = {
{"m25p40-nonjedec"}, {"m25p80-nonjedec"}, {"m25p16-nonjedec"},
{"m25p32-nonjedec"}, {"m25p64-nonjedec"}, {"m25p128-nonjedec"},
+ /* Everspin MRAMs (non-JEDEC) */
+ { "mr25h256" }, /* 256 Kib, 40 MHz */
+ { "mr25h10" }, /* 1 Mib, 40 MHz */
+ { "mr25h40" }, /* 4 Mib, 40 MHz */
+
{ },
};
MODULE_DEVICE_TABLE(spi, m25p_ids);
diff --git a/drivers/mtd/devices/serial_flash_cmds.h b/drivers/mtd/devices/serial_flash_cmds.h
index f59a125295d0..8b81e15105dd 100644
--- a/drivers/mtd/devices/serial_flash_cmds.h
+++ b/drivers/mtd/devices/serial_flash_cmds.h
@@ -18,19 +18,12 @@
#define SPINOR_OP_RDVCR 0x85
/* JEDEC Standard - Serial Flash Discoverable Parmeters (SFDP) Commands */
-#define SPINOR_OP_READ_1_2_2 0xbb /* DUAL I/O READ */
-#define SPINOR_OP_READ_1_4_4 0xeb /* QUAD I/O READ */
-
#define SPINOR_OP_WRITE 0x02 /* PAGE PROGRAM */
#define SPINOR_OP_WRITE_1_1_2 0xa2 /* DUAL INPUT PROGRAM */
#define SPINOR_OP_WRITE_1_2_2 0xd2 /* DUAL INPUT EXT PROGRAM */
#define SPINOR_OP_WRITE_1_1_4 0x32 /* QUAD INPUT PROGRAM */
#define SPINOR_OP_WRITE_1_4_4 0x12 /* QUAD INPUT EXT PROGRAM */
-/* READ commands with 32-bit addressing */
-#define SPINOR_OP_READ4_1_2_2 0xbc
-#define SPINOR_OP_READ4_1_4_4 0xec
-
/* Configuration flags */
#define FLASH_FLAG_SINGLE 0x000000ff
#define FLASH_FLAG_READ_WRITE 0x00000001
diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index 5454b4113589..804313a33f2b 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -507,13 +507,13 @@ static struct seq_rw_config n25q_read3_configs[] = {
* - 'FAST' variants configured for 8 dummy cycles (see note above.)
*/
static struct seq_rw_config n25q_read4_configs[] = {
- {FLASH_FLAG_READ_1_4_4, SPINOR_OP_READ4_1_4_4, 0, 4, 4, 0x00, 0, 8},
- {FLASH_FLAG_READ_1_1_4, SPINOR_OP_READ4_1_1_4, 0, 1, 4, 0x00, 0, 8},
- {FLASH_FLAG_READ_1_2_2, SPINOR_OP_READ4_1_2_2, 0, 2, 2, 0x00, 0, 8},
- {FLASH_FLAG_READ_1_1_2, SPINOR_OP_READ4_1_1_2, 0, 1, 2, 0x00, 0, 8},
- {FLASH_FLAG_READ_FAST, SPINOR_OP_READ4_FAST, 0, 1, 1, 0x00, 0, 8},
- {FLASH_FLAG_READ_WRITE, SPINOR_OP_READ4, 0, 1, 1, 0x00, 0, 0},
- {0x00, 0, 0, 0, 0, 0x00, 0, 0},
+ {FLASH_FLAG_READ_1_4_4, SPINOR_OP_READ_1_4_4_4B, 0, 4, 4, 0x00, 0, 8},
+ {FLASH_FLAG_READ_1_1_4, SPINOR_OP_READ_1_1_4_4B, 0, 1, 4, 0x00, 0, 8},
+ {FLASH_FLAG_READ_1_2_2, SPINOR_OP_READ_1_2_2_4B, 0, 2, 2, 0x00, 0, 8},
+ {FLASH_FLAG_READ_1_1_2, SPINOR_OP_READ_1_1_2_4B, 0, 1, 2, 0x00, 0, 8},
+ {FLASH_FLAG_READ_FAST, SPINOR_OP_READ_FAST_4B, 0, 1, 1, 0x00, 0, 8},
+ {FLASH_FLAG_READ_WRITE, SPINOR_OP_READ_4B, 0, 1, 1, 0x00, 0, 0},
+ {0x00, 0, 0, 0, 0, 0x00, 0, 0},
};
/*
@@ -553,13 +553,13 @@ static int stfsm_mx25_en_32bit_addr_seq(struct stfsm_seq *seq)
* entering a state that is incompatible with the SPIBoot Controller.
*/
static struct seq_rw_config stfsm_s25fl_read4_configs[] = {
- {FLASH_FLAG_READ_1_4_4, SPINOR_OP_READ4_1_4_4, 0, 4, 4, 0x00, 2, 4},
- {FLASH_FLAG_READ_1_1_4, SPINOR_OP_READ4_1_1_4, 0, 1, 4, 0x00, 0, 8},
- {FLASH_FLAG_READ_1_2_2, SPINOR_OP_READ4_1_2_2, 0, 2, 2, 0x00, 4, 0},
- {FLASH_FLAG_READ_1_1_2, SPINOR_OP_READ4_1_1_2, 0, 1, 2, 0x00, 0, 8},
- {FLASH_FLAG_READ_FAST, SPINOR_OP_READ4_FAST, 0, 1, 1, 0x00, 0, 8},
- {FLASH_FLAG_READ_WRITE, SPINOR_OP_READ4, 0, 1, 1, 0x00, 0, 0},
- {0x00, 0, 0, 0, 0, 0x00, 0, 0},
+ {FLASH_FLAG_READ_1_4_4, SPINOR_OP_READ_1_4_4_4B, 0, 4, 4, 0x00, 2, 4},
+ {FLASH_FLAG_READ_1_1_4, SPINOR_OP_READ_1_1_4_4B, 0, 1, 4, 0x00, 0, 8},
+ {FLASH_FLAG_READ_1_2_2, SPINOR_OP_READ_1_2_2_4B, 0, 2, 2, 0x00, 4, 0},
+ {FLASH_FLAG_READ_1_1_2, SPINOR_OP_READ_1_1_2_4B, 0, 1, 2, 0x00, 0, 8},
+ {FLASH_FLAG_READ_FAST, SPINOR_OP_READ_FAST_4B, 0, 1, 1, 0x00, 0, 8},
+ {FLASH_FLAG_READ_WRITE, SPINOR_OP_READ_4B, 0, 1, 1, 0x00, 0, 0},
+ {0x00, 0, 0, 0, 0, 0x00, 0, 0},
};
static struct seq_rw_config stfsm_s25fl_write4_configs[] = {
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-29 07:27:21 +0000