From: Kamal Dasu kdasu.kdev@gmail.com
This change adds support for brcm NAND v7.3 controller. This controller uses a newer version of flash_dma engine and change mostly implements these differences.
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 | 106 ++++++++++++++++++----- 1 file changed, 84 insertions(+), 22 deletions(-)
diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index ede51def5063..ef73205d8c18 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -86,6 +86,12 @@ struct brcm_nand_dma_desc { #define FLASH_DMA_ECC_ERROR (1 << 8) #define FLASH_DMA_CORR_ERROR (1 << 9)
+/* Bitfields for DMA_MODE */ +#define FLASH_DMA_MODE_STOP_ON_ERROR BIT(1) /* stop in Uncorr ECC error */ +#define FLASH_DMA_MODE_MODE BIT(0) /* link list */ +#define FLASH_DMA_MODE_MASK (FLASH_DMA_MODE_STOP_ON_ERROR | \ + FLASH_DMA_MODE_MODE) + /* 512B flash cache in the NAND controller HW */ #define FC_SHIFT 9U #define FC_BYTES 512U @@ -98,6 +104,53 @@ struct brcm_nand_dma_desc { #define NAND_CTRL_RDY (INTFC_CTLR_READY | INTFC_FLASH_READY) #define NAND_POLL_STATUS_TIMEOUT_MS 100
+/* flash_dma registers */ +enum flash_dma_reg { + FLASH_DMA_REVISION = 0, + FLASH_DMA_FIRST_DESC, + FLASH_DMA_FIRST_DESC_EXT, + FLASH_DMA_CTRL, + FLASH_DMA_MODE, + FLASH_DMA_STATUS, + FLASH_DMA_INTERRUPT_DESC, + FLASH_DMA_INTERRUPT_DESC_EXT, + FLASH_DMA_ERROR_STATUS, + FLASH_DMA_CURRENT_DESC, + FLASH_DMA_CURRENT_DESC_EXT, +}; + +#ifndef __UBOOT__ +/* flash_dma registers v1*/ +static const u16 flash_dma_regs_v1[] = { + [FLASH_DMA_REVISION] = 0x00, + [FLASH_DMA_FIRST_DESC] = 0x04, + [FLASH_DMA_FIRST_DESC_EXT] = 0x08, + [FLASH_DMA_CTRL] = 0x0c, + [FLASH_DMA_MODE] = 0x10, + [FLASH_DMA_STATUS] = 0x14, + [FLASH_DMA_INTERRUPT_DESC] = 0x18, + [FLASH_DMA_INTERRUPT_DESC_EXT] = 0x1c, + [FLASH_DMA_ERROR_STATUS] = 0x20, + [FLASH_DMA_CURRENT_DESC] = 0x24, + [FLASH_DMA_CURRENT_DESC_EXT] = 0x28, +}; + +/* flash_dma registers v4 */ +static const u16 flash_dma_regs_v4[] = { + [FLASH_DMA_REVISION] = 0x00, + [FLASH_DMA_FIRST_DESC] = 0x08, + [FLASH_DMA_FIRST_DESC_EXT] = 0x0c, + [FLASH_DMA_CTRL] = 0x10, + [FLASH_DMA_MODE] = 0x14, + [FLASH_DMA_STATUS] = 0x18, + [FLASH_DMA_INTERRUPT_DESC] = 0x20, + [FLASH_DMA_INTERRUPT_DESC_EXT] = 0x24, + [FLASH_DMA_ERROR_STATUS] = 0x28, + [FLASH_DMA_CURRENT_DESC] = 0x30, + [FLASH_DMA_CURRENT_DESC_EXT] = 0x34, +}; +#endif /* __UBOOT__ */ + /* Controller feature flags */ enum { BRCMNAND_HAS_1K_SECTORS = BIT(0), @@ -135,6 +188,8 @@ struct brcmnand_controller { /* List of NAND hosts (one for each chip-select) */ struct list_head host_list;
+ /* flash_dma reg */ + const u16 *flash_dma_offsets; struct brcm_nand_dma_desc *dma_desc; dma_addr_t dma_pa;
@@ -473,7 +528,7 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl) /* Register offsets */ if (ctrl->nand_version >= 0x0702) ctrl->reg_offsets = brcmnand_regs_v72; - else if (ctrl->nand_version >= 0x0701) + else if (ctrl->nand_version == 0x0701) ctrl->reg_offsets = brcmnand_regs_v71; else if (ctrl->nand_version >= 0x0600) ctrl->reg_offsets = brcmnand_regs_v60; @@ -518,7 +573,7 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl) }
/* Maximum spare area sector size (per 512B) */ - if (ctrl->nand_version >= 0x0702) + if (ctrl->nand_version == 0x0702) ctrl->max_oob = 128; else if (ctrl->nand_version >= 0x0600) ctrl->max_oob = 64; @@ -553,6 +608,17 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl) return 0; }
+#ifndef __UBOOT__ +static void brcmnand_flash_dma_revision_init(struct brcmnand_controller *ctrl) +{ + /* flash_dma register offsets */ + if (ctrl->nand_version >= 0x0703) + ctrl->flash_dma_offsets = flash_dma_regs_v4; + else + ctrl->flash_dma_offsets = flash_dma_regs_v1; +} +#endif /* __UBOOT__ */ + static inline u32 brcmnand_read_reg(struct brcmnand_controller *ctrl, enum brcmnand_reg reg) { @@ -675,7 +741,7 @@ static void brcmnand_wr_corr_thresh(struct brcmnand_host *host, u8 val) enum brcmnand_reg reg = BRCMNAND_CORR_THRESHOLD; int cs = host->cs;
- if (ctrl->nand_version >= 0x0702) + if (ctrl->nand_version == 0x0702) bits = 7; else if (ctrl->nand_version >= 0x0600) bits = 6; @@ -729,7 +795,7 @@ enum {
static inline u32 brcmnand_spare_area_mask(struct brcmnand_controller *ctrl) { - if (ctrl->nand_version >= 0x0702) + if (ctrl->nand_version == 0x0702) return GENMASK(7, 0); else if (ctrl->nand_version >= 0x0600) return GENMASK(6, 0); @@ -877,20 +943,6 @@ static inline void brcmnand_set_wp(struct brcmnand_controller *ctrl, bool en) * Flash DMA ***********************************************************************/
-enum flash_dma_reg { - FLASH_DMA_REVISION = 0x00, - FLASH_DMA_FIRST_DESC = 0x04, - FLASH_DMA_FIRST_DESC_EXT = 0x08, - FLASH_DMA_CTRL = 0x0c, - FLASH_DMA_MODE = 0x10, - FLASH_DMA_STATUS = 0x14, - FLASH_DMA_INTERRUPT_DESC = 0x18, - FLASH_DMA_INTERRUPT_DESC_EXT = 0x1c, - FLASH_DMA_ERROR_STATUS = 0x20, - FLASH_DMA_CURRENT_DESC = 0x24, - FLASH_DMA_CURRENT_DESC_EXT = 0x28, -}; - static inline bool has_flash_dma(struct brcmnand_controller *ctrl) { return ctrl->flash_dma_base; @@ -906,14 +958,19 @@ static inline bool flash_dma_buf_ok(const void *buf) #endif /* __UBOOT__ */ }
-static inline void flash_dma_writel(struct brcmnand_controller *ctrl, u8 offs, - u32 val) +static inline void flash_dma_writel(struct brcmnand_controller *ctrl, + enum flash_dma_reg dma_reg, u32 val) { + u16 offs = ctrl->flash_dma_offsets[dma_reg]; + brcmnand_writel(val, ctrl->flash_dma_base + offs); }
-static inline u32 flash_dma_readl(struct brcmnand_controller *ctrl, u8 offs) +static inline u32 flash_dma_readl(struct brcmnand_controller *ctrl, + enum flash_dma_reg dma_reg) { + u16 offs = ctrl->flash_dma_offsets[dma_reg]; + return brcmnand_readl(ctrl->flash_dma_base + offs); }
@@ -2522,6 +2579,7 @@ static const struct of_device_id brcmnand_of_match[] = { { .compatible = "brcm,brcmnand-v7.0" }, { .compatible = "brcm,brcmnand-v7.1" }, { .compatible = "brcm,brcmnand-v7.2" }, + { .compatible = "brcm,brcmnand-v7.3" }, {}, }; MODULE_DEVICE_TABLE(of, brcmnand_of_match); @@ -2652,7 +2710,11 @@ int brcmnand_probe(struct udevice *dev, struct brcmnand_soc *soc) goto err; }
- flash_dma_writel(ctrl, FLASH_DMA_MODE, 1); /* linked-list */ + /* initialize the dma version */ + brcmnand_flash_dma_revision_init(ctrl); + + /* linked-list and stop on error */ + flash_dma_writel(ctrl, FLASH_DMA_MODE, FLASH_DMA_MODE_MASK); flash_dma_writel(ctrl, FLASH_DMA_ERROR_STATUS, 0);
/* Allocate descriptor(s) */