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Commit c0e6616a authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by David Woodhouse
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[MTD] [NAND] sh_flctl: fix hardware ecc handling for 2048 byte page 



Signed-off-by: default avatarJeremy Baker <Jeremy.Baker@renesas.com>
Signed-off-by: default avatarYoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 158772c2

drivers/mtd/nand/sh_flctl.c

+12 −6
Original line number Diff line number Diff line
@@ -58,7 +58,7 @@ static struct nand_bbt_descr flctl_4secc_smallpage = { 
};



static struct nand_bbt_descr flctl_4secc_largepage = {

	.options = 0,

	.options = NAND_BBT_SCAN2NDPAGE,

	.offs = 58,

	.len = 2,

	.pattern = scan_ff_pattern,
@@ -149,7 +149,7 @@ static void wait_wfifo_ready(struct sh_flctl *flctl) 
	printk(KERN_ERR "wait_wfifo_ready(): Timeout occured \n");

}



static int wait_recfifo_ready(struct sh_flctl *flctl)

static int wait_recfifo_ready(struct sh_flctl *flctl, int sector_number)

{

	uint32_t timeout = LOOP_TIMEOUT_MAX;

	int checked[4];
@@ -183,7 +183,12 @@ static int wait_recfifo_ready(struct sh_flctl *flctl) 
				uint8_t org;

				int index;



				if (flctl->page_size)

					index = (512 * sector_number) +

						(data >> 16);

				else

					index = data >> 16;



				org = flctl->done_buff[index];

				flctl->done_buff[index] = org ^ (data & 0xFF);

				checked[i] = 1;
@@ -238,14 +243,14 @@ static void read_fiforeg(struct sh_flctl *flctl, int rlen, int offset) 
	}

}



static int read_ecfiforeg(struct sh_flctl *flctl, uint8_t *buff)

static int read_ecfiforeg(struct sh_flctl *flctl, uint8_t *buff, int sector)

{

	int i;

	unsigned long *ecc_buf = (unsigned long *)buff;

	void *fifo_addr = (void *)FLECFIFO(flctl);



	for (i = 0; i < 4; i++) {

		if (wait_recfifo_ready(flctl))

		if (wait_recfifo_ready(flctl , sector))

			return 1;

		ecc_buf[i] = readl(fifo_addr);

		ecc_buf[i] = be32_to_cpu(ecc_buf[i]);
@@ -384,7 +389,8 @@ static void execmd_read_page_sector(struct mtd_info *mtd, int page_addr) 
		read_fiforeg(flctl, 512, 512 * sector);



		ret = read_ecfiforeg(flctl,

			&flctl->done_buff[mtd->writesize + 16 * sector]);

			&flctl->done_buff[mtd->writesize + 16 * sector],

			sector);



		if (ret)

			flctl->hwecc_cant_correct[sector] = 1;