Hi
On Sat, Feb 11, 2023 at 4:29 PM Linus Walleij linus.walleij@linaro.org wrote:
From: Kamal Dasu kdasu.kdev@gmail.com
Refactored NAND ECC and CMD address configuration code to use helper functions.
Signed-off-by: Kamal Dasu kdasu.kdev@gmail.com Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com [Ported to U-Boot from the Linux kernel] Signed-off-by: Linus Walleij linus.walleij@linaro.org
drivers/mtd/nand/raw/brcmnand/brcmnand.c | 100 ++++++++++++++--------- 1 file changed, 62 insertions(+), 38 deletions(-)
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index 74c9348f7fc4..571f1c795da0 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -595,6 +595,54 @@ static inline void brcmnand_write_fc(struct brcmnand_controller *ctrl, __raw_writel(val, ctrl->nand_fc + word * 4); }
+static void brcmnand_clear_ecc_addr(struct brcmnand_controller *ctrl) +{
/* Clear error addresses */brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_ADDR, 0);brcmnand_write_reg(ctrl, BRCMNAND_CORR_ADDR, 0);brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_EXT_ADDR, 0);brcmnand_write_reg(ctrl, BRCMNAND_CORR_EXT_ADDR, 0);+}
+static u64 brcmnand_get_uncorrecc_addr(struct brcmnand_controller *ctrl) +{
u64 err_addr;err_addr = brcmnand_read_reg(ctrl, BRCMNAND_UNCORR_ADDR);err_addr |= ((u64)(brcmnand_read_reg(ctrl,BRCMNAND_UNCORR_EXT_ADDR)& 0xffff) << 32);return err_addr;+}
+static u64 brcmnand_get_correcc_addr(struct brcmnand_controller *ctrl) +{
u64 err_addr;err_addr = brcmnand_read_reg(ctrl, BRCMNAND_CORR_ADDR);err_addr |= ((u64)(brcmnand_read_reg(ctrl,BRCMNAND_CORR_EXT_ADDR)& 0xffff) << 32);return err_addr;+}
+static void brcmnand_set_cmd_addr(struct mtd_info *mtd, u64 addr) +{
struct nand_chip *chip = mtd_to_nand(mtd);struct brcmnand_host *host = nand_get_controller_data(chip);struct brcmnand_controller *ctrl = host->ctrl;brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,(host->cs << 16) | ((addr >> 32) & 0xffff));(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS);brcmnand_write_reg(ctrl, BRCMNAND_CMD_ADDRESS,lower_32_bits(addr));(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS);+}
static inline u16 brcmnand_cs_offset(struct brcmnand_controller *ctrl, int cs, enum brcmnand_cs_reg reg) { @@ -1190,9 +1238,12 @@ static void brcmnand_send_cmd(struct brcmnand_host *host, int cmd) { struct brcmnand_controller *ctrl = host->ctrl; int ret;
u64 cmd_addr;cmd_addr = brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS);dev_dbg(ctrl->dev, "send native cmd %d addr 0x%llx\n", cmd, cmd_addr);
dev_dbg(ctrl->dev, "send native cmd %d addr_lo 0x%x\n", cmd,brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS)); BUG_ON(ctrl->cmd_pending != 0); ctrl->cmd_pending = cmd;@@ -1365,12 +1416,7 @@ static void brcmnand_cmdfunc(struct mtd_info *mtd, unsigned command, if (!native_cmd) return;
brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,(host->cs << 16) | ((addr >> 32) & 0xffff));(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS);brcmnand_write_reg(ctrl, BRCMNAND_CMD_ADDRESS, lower_32_bits(addr));(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS);
brcmnand_set_cmd_addr(mtd, addr); brcmnand_send_cmd(host, native_cmd); brcmnand_waitfunc(mtd, chip);@@ -1600,20 +1646,10 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip, struct brcmnand_controller *ctrl = host->ctrl; int i, j, ret = 0;
/* Clear error addresses */brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_ADDR, 0);brcmnand_write_reg(ctrl, BRCMNAND_CORR_ADDR, 0);brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_EXT_ADDR, 0);brcmnand_write_reg(ctrl, BRCMNAND_CORR_EXT_ADDR, 0);brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,(host->cs << 16) | ((addr >> 32) & 0xffff));(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS);
brcmnand_clear_ecc_addr(ctrl); for (i = 0; i < trans; i++, addr += FC_BYTES) {
brcmnand_write_reg(ctrl, BRCMNAND_CMD_ADDRESS,lower_32_bits(addr));(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS);
brcmnand_set_cmd_addr(mtd, addr); /* SPARE_AREA_READ does not use ECC, so just use PAGE_READ */ brcmnand_send_cmd(host, CMD_PAGE_READ); brcmnand_waitfunc(mtd, chip);@@ -1633,21 +1669,15 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip, host->hwcfg.sector_size_1k);
if (ret != -EBADMSG) {
*err_addr = brcmnand_read_reg(ctrl,BRCMNAND_UNCORR_ADDR) |((u64)(brcmnand_read_reg(ctrl,BRCMNAND_UNCORR_EXT_ADDR)& 0xffff) << 32);
*err_addr = brcmnand_get_uncorrecc_addr(ctrl);if (*err_addr) ret = -EBADMSG; } if (!ret) {
*err_addr = brcmnand_read_reg(ctrl,BRCMNAND_CORR_ADDR) |((u64)(brcmnand_read_reg(ctrl,BRCMNAND_CORR_EXT_ADDR)& 0xffff) << 32);
*err_addr = brcmnand_get_correcc_addr(ctrl);if (*err_addr) ret = -EUCLEAN; }@@ -1721,7 +1751,7 @@ static int brcmnand_read(struct mtd_info *mtd, struct nand_chip *chip, dev_dbg(ctrl->dev, "read %llx -> %p\n", (unsigned long long)addr, buf);
try_dmaread:
brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_COUNT, 0);
brcmnand_clear_ecc_addr(ctrl);#ifndef __UBOOT__ if (has_flash_dma(ctrl) && !oob && flash_dma_buf_ok(buf)) { @@ -1875,15 +1905,9 @@ static int brcmnand_write(struct mtd_info *mtd, struct nand_chip *chip, } #endif /* __UBOOT__ */
brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,(host->cs << 16) | ((addr >> 32) & 0xffff));(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS);for (i = 0; i < trans; i++, addr += FC_BYTES) { /* full address MUST be set before populating FC */brcmnand_write_reg(ctrl, BRCMNAND_CMD_ADDRESS,lower_32_bits(addr));(void)brcmnand_read_reg(ctrl, BRCMNAND_CMD_ADDRESS);
brcmnand_set_cmd_addr(mtd, addr); if (buf) { brcmnand_soc_data_bus_prepare(ctrl->soc, false);-- 2.39.1
Reviewed-by: Michael Trimarchi michael@amarulasolutions.com