diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.10/0150-mtd-nand-pxa3xx-Add-a-read-write-buffers-markers.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.10/0150-mtd-nand-pxa3xx-Add-a-read-write-buffers-markers.patch | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/target/linux/mvebu/patches-3.10/0150-mtd-nand-pxa3xx-Add-a-read-write-buffers-markers.patch b/target/linux/mvebu/patches-3.10/0150-mtd-nand-pxa3xx-Add-a-read-write-buffers-markers.patch deleted file mode 100644 index 1251f60..0000000 --- a/target/linux/mvebu/patches-3.10/0150-mtd-nand-pxa3xx-Add-a-read-write-buffers-markers.patch +++ /dev/null @@ -1,111 +0,0 @@ -From 6e3022aeb5d221af838ad43a2163374aecacf929 Mon Sep 17 00:00:00 2001 -From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> -Date: Thu, 14 Nov 2013 18:25:36 -0300 -Subject: [PATCH 150/203] mtd: nand: pxa3xx: Add a read/write buffers markers - -In preparation to support multiple (aka chunked, aka splitted) -page I/O, this commit adds 'data_buff_pos' and 'oob_buff_pos' fields -to keep track of where the next read (or write) should be done. - -This will allow multiple calls to handle_data_pio() to continue -the read (or write) operation. - -Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> -Tested-by: Daniel Mack <zonque@gmail.com> -Signed-off-by: Brian Norris <computersforpeace@gmail.com> ---- - drivers/mtd/nand/pxa3xx_nand.c | 40 +++++++++++++++++++++++++++++----------- - 1 file changed, 29 insertions(+), 11 deletions(-) - ---- a/drivers/mtd/nand/pxa3xx_nand.c -+++ b/drivers/mtd/nand/pxa3xx_nand.c -@@ -176,6 +176,8 @@ struct pxa3xx_nand_info { - unsigned int buf_start; - unsigned int buf_count; - unsigned int buf_size; -+ unsigned int data_buff_pos; -+ unsigned int oob_buff_pos; - - /* DMA information */ - int drcmr_dat; -@@ -338,11 +340,12 @@ static void pxa3xx_nand_set_timing(struc - * spare and ECC configuration. - * Only applicable to READ0, READOOB and PAGEPROG commands. - */ --static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info) -+static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info, -+ struct mtd_info *mtd) - { - int oob_enable = info->reg_ndcr & NDCR_SPARE_EN; - -- info->data_size = info->fifo_size; -+ info->data_size = mtd->writesize; - if (!oob_enable) - return; - -@@ -430,26 +433,39 @@ static void disable_int(struct pxa3xx_na - - static void handle_data_pio(struct pxa3xx_nand_info *info) - { -+ unsigned int do_bytes = min(info->data_size, info->fifo_size); -+ - switch (info->state) { - case STATE_PIO_WRITING: -- __raw_writesl(info->mmio_base + NDDB, info->data_buff, -- DIV_ROUND_UP(info->data_size, 4)); -+ __raw_writesl(info->mmio_base + NDDB, -+ info->data_buff + info->data_buff_pos, -+ DIV_ROUND_UP(do_bytes, 4)); -+ - if (info->oob_size > 0) -- __raw_writesl(info->mmio_base + NDDB, info->oob_buff, -- DIV_ROUND_UP(info->oob_size, 4)); -+ __raw_writesl(info->mmio_base + NDDB, -+ info->oob_buff + info->oob_buff_pos, -+ DIV_ROUND_UP(info->oob_size, 4)); - break; - case STATE_PIO_READING: -- __raw_readsl(info->mmio_base + NDDB, info->data_buff, -- DIV_ROUND_UP(info->data_size, 4)); -+ __raw_readsl(info->mmio_base + NDDB, -+ info->data_buff + info->data_buff_pos, -+ DIV_ROUND_UP(do_bytes, 4)); -+ - if (info->oob_size > 0) -- __raw_readsl(info->mmio_base + NDDB, info->oob_buff, -- DIV_ROUND_UP(info->oob_size, 4)); -+ __raw_readsl(info->mmio_base + NDDB, -+ info->oob_buff + info->oob_buff_pos, -+ DIV_ROUND_UP(info->oob_size, 4)); - break; - default: - dev_err(&info->pdev->dev, "%s: invalid state %d\n", __func__, - info->state); - BUG(); - } -+ -+ /* Update buffer pointers for multi-page read/write */ -+ info->data_buff_pos += do_bytes; -+ info->oob_buff_pos += info->oob_size; -+ info->data_size -= do_bytes; - } - - #ifdef ARCH_HAS_DMA -@@ -616,6 +632,8 @@ static void prepare_start_command(struct - info->buf_start = 0; - info->buf_count = 0; - info->oob_size = 0; -+ info->data_buff_pos = 0; -+ info->oob_buff_pos = 0; - info->use_ecc = 0; - info->use_spare = 1; - info->retcode = ERR_NONE; -@@ -626,7 +644,7 @@ static void prepare_start_command(struct - case NAND_CMD_PAGEPROG: - info->use_ecc = 1; - case NAND_CMD_READOOB: -- pxa3xx_set_datasize(info); -+ pxa3xx_set_datasize(info, mtd); - break; - case NAND_CMD_PARAM: - info->use_spare = 0; |