From: Florian Fainelli <f.fainelli@gmail.com> To: linux-mtd@lists.infradead.org Cc: Florian Fainelli <f.fainelli@gmail.com>, Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, Brian Norris <computersforpeace@gmail.com>, Kamal Dasu <kdasu.kdev@gmail.com>, Boris Brezillon <boris.brezillon@free-electrons.com>, Richard Weinberger <richard@nod.at>, David Woodhouse <dwmw2@infradead.org>, Simon Arlott <simon@fire.lp0.eu>, devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-kernel@vger.kernel.org (open list), bcm-kernel-feedback-list@broadcom.com (open list:BROADCOM STB NAND FLASH DRIVER) Subject: [PATCH] mtd: brcmnand: Add v7.2 controller support Date: Fri, 27 May 2016 14:58:11 -0700 [thread overview] Message-ID: <1464386293-18862-1-git-send-email-f.fainelli@gmail.com> (raw) The 7.2 controller differs in a few area compared to its predecssor (7.1): - NAND scrambler, which we are not using just yet - higher ECC levels (up to 120 bits) per 1KB data blocks, also not supported yet - up to 128B OOB This patchs adds the ncessary code to support such a controller generation and updates the Device Tree binding. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- .../devicetree/bindings/mtd/brcm,brcmnand.txt | 1 + drivers/mtd/nand/brcmnand/brcmnand.c | 87 +++++++++++++++++++--- 2 files changed, 76 insertions(+), 12 deletions(-) diff --git a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt index deb24cbdda82..c8d71e75cb09 100644 --- a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt +++ b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt @@ -27,6 +27,7 @@ Required properties: brcm,brcmnand-v6.2 brcm,brcmnand-v7.0 brcm,brcmnand-v7.1 + brcm,brcmnand-v7.2 brcm,brcmnand - reg : the register start and length for NAND register region. (optional) Flash DMA register range (if present) diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c index b76ad7c0144f..6d9c202b816b 100644 --- a/drivers/mtd/nand/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/brcmnand/brcmnand.c @@ -340,6 +340,36 @@ static const u16 brcmnand_regs_v71[] = { [BRCMNAND_FC_BASE] = 0x400, }; +/* BRCMNAND v7.2 */ +static const u16 brcmnand_regs_v72[] = { + [BRCMNAND_CMD_START] = 0x04, + [BRCMNAND_CMD_EXT_ADDRESS] = 0x08, + [BRCMNAND_CMD_ADDRESS] = 0x0c, + [BRCMNAND_INTFC_STATUS] = 0x14, + [BRCMNAND_CS_SELECT] = 0x18, + [BRCMNAND_CS_XOR] = 0x1c, + [BRCMNAND_LL_OP] = 0x20, + [BRCMNAND_CS0_BASE] = 0x50, + [BRCMNAND_CS1_BASE] = 0, + [BRCMNAND_CORR_THRESHOLD] = 0xdc, + [BRCMNAND_CORR_THRESHOLD_EXT] = 0xe0, + [BRCMNAND_UNCORR_COUNT] = 0xfc, + [BRCMNAND_CORR_COUNT] = 0x100, + [BRCMNAND_CORR_EXT_ADDR] = 0x10c, + [BRCMNAND_CORR_ADDR] = 0x110, + [BRCMNAND_UNCORR_EXT_ADDR] = 0x114, + [BRCMNAND_UNCORR_ADDR] = 0x118, + [BRCMNAND_SEMAPHORE] = 0x150, + [BRCMNAND_ID] = 0x194, + [BRCMNAND_ID_EXT] = 0x198, + [BRCMNAND_LL_RDATA] = 0x19c, + [BRCMNAND_OOB_READ_BASE] = 0x200, + [BRCMNAND_OOB_READ_10_BASE] = 0, + [BRCMNAND_OOB_WRITE_BASE] = 0x400, + [BRCMNAND_OOB_WRITE_10_BASE] = 0, + [BRCMNAND_FC_BASE] = 0x600, +}; + enum brcmnand_cs_reg { BRCMNAND_CS_CFG_EXT = 0, BRCMNAND_CS_CFG, @@ -435,7 +465,9 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl) } /* Register offsets */ - if (ctrl->nand_version >= 0x0701) + if (ctrl->nand_version >= 0x0702) + ctrl->reg_offsets = brcmnand_regs_v72; + else if (ctrl->nand_version >= 0x0701) ctrl->reg_offsets = brcmnand_regs_v71; else if (ctrl->nand_version >= 0x0600) ctrl->reg_offsets = brcmnand_regs_v60; @@ -480,6 +512,8 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl) } /* Maximum spare area sector size (per 512B) */ + if (ctrl->nand_version >= 0x0702) + ctrl->max_oob = 128; if (ctrl->nand_version >= 0x0600) ctrl->max_oob = 64; else if (ctrl->nand_version >= 0x0500) @@ -583,6 +617,8 @@ 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) + bits = 7; if (ctrl->nand_version >= 0x0600) bits = 6; else if (ctrl->nand_version >= 0x0500) @@ -590,7 +626,11 @@ static void brcmnand_wr_corr_thresh(struct brcmnand_host *host, u8 val) else bits = 4; - if (ctrl->nand_version >= 0x0600) { + if (ctrl->nand_version >= 0x0702) { + if (cs >= 4) + reg = BRCMNAND_CORR_THRESHOLD_EXT; + shift = (cs % 4) * bits; + } else if (ctrl->nand_version >= 0x0600) { if (cs >= 5) reg = BRCMNAND_CORR_THRESHOLD_EXT; shift = (cs % 5) * bits; @@ -631,19 +671,28 @@ enum { static inline u32 brcmnand_spare_area_mask(struct brcmnand_controller *ctrl) { - if (ctrl->nand_version >= 0x0600) + if (ctrl->nand_version >= 0x0702) + return GENMASK(7, 0); + else if (ctrl->nand_version >= 0x0600) return GENMASK(6, 0); else return GENMASK(5, 0); } #define NAND_ACC_CONTROL_ECC_SHIFT 16 +#define NAND_ACC_CONTROL_ECC_EXT_SHIFT 13 static inline u32 brcmnand_ecc_level_mask(struct brcmnand_controller *ctrl) { u32 mask = (ctrl->nand_version >= 0x0600) ? 0x1f : 0x0f; - return mask << NAND_ACC_CONTROL_ECC_SHIFT; + mask <<= NAND_ACC_CONTROL_ECC_SHIFT; + + /* v7.2 includes additional ECC levels */ + if (ctrl->nand_version >= 0x0702) + mask |= 0x7 << NAND_ACC_CONTROL_ECC_EXT_SHIFT; + + return mask; } static void brcmnand_set_ecc_enabled(struct brcmnand_host *host, int en) @@ -667,7 +716,9 @@ static void brcmnand_set_ecc_enabled(struct brcmnand_host *host, int en) static inline int brcmnand_sector_1k_shift(struct brcmnand_controller *ctrl) { - if (ctrl->nand_version >= 0x0600) + if (ctrl->nand_version >= 0x0702) + return 9; + else if (ctrl->nand_version >= 0x0600) return 7; else if (ctrl->nand_version >= 0x0500) return 6; @@ -773,10 +824,16 @@ enum brcmnand_llop_type { * Internal support functions ***********************************************************************/ -static inline bool is_hamming_ecc(struct brcmnand_cfg *cfg) +static inline bool is_hamming_ecc(struct brcmnand_controller *ctrl, + struct brcmnand_cfg *cfg) { - return cfg->sector_size_1k == 0 && cfg->spare_area_size == 16 && - cfg->ecc_level == 15; + if (ctrl->nand_version <= 0x0701) + return cfg->sector_size_1k == 0 && cfg->spare_area_size == 16 && + cfg->ecc_level == 15; + else + return cfg->sector_size_1k == 0 && ((cfg->spare_area_size == 16 && + cfg->ecc_level == 15) || + (cfg->spare_area_size == 28 && cfg->ecc_level == 16)); } /* @@ -931,7 +988,7 @@ static int brcmstb_choose_ecc_layout(struct brcmnand_host *host) if (p->sector_size_1k) ecc_level <<= 1; - if (is_hamming_ecc(p)) { + if (is_hamming_ecc(host->ctrl, p)) { ecc->bytes = 3 * sectors; mtd_set_ooblayout(mtd, &brcmnand_hamming_ooblayout_ops); return 0; @@ -1857,7 +1914,8 @@ static int brcmnand_set_cfg(struct brcmnand_host *host, return 0; } -static void brcmnand_print_cfg(char *buf, struct brcmnand_cfg *cfg) +static void brcmnand_print_cfg(struct brcmnand_host *host, + char *buf, struct brcmnand_cfg *cfg) { buf += sprintf(buf, "%lluMiB total, %uKiB blocks, %u%s pages, %uB OOB, %u-bit", @@ -1868,7 +1926,7 @@ static void brcmnand_print_cfg(char *buf, struct brcmnand_cfg *cfg) cfg->spare_area_size, cfg->device_width); /* Account for Hamming ECC and for BCH 512B vs 1KiB sectors */ - if (is_hamming_ecc(cfg)) + if (is_hamming_ecc(host->ctrl, cfg)) sprintf(buf, ", Hamming ECC"); else if (cfg->sector_size_1k) sprintf(buf, ", BCH-%u (1KiB sector)", cfg->ecc_level << 1); @@ -1987,7 +2045,7 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) brcmnand_set_ecc_enabled(host, 1); - brcmnand_print_cfg(msg, cfg); + brcmnand_print_cfg(host, msg, cfg); dev_info(ctrl->dev, "detected %s\n", msg); /* Configure ACC_CONTROL */ @@ -1995,6 +2053,10 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) tmp = nand_readreg(ctrl, offs); tmp &= ~ACC_CONTROL_PARTIAL_PAGE; tmp &= ~ACC_CONTROL_RD_ERASED; + + /* We need to turn on Read from erased paged protected by ECC */ + if (ctrl->nand_version >= 0x0702) + tmp |= ACC_CONTROL_RD_ERASED; tmp &= ~ACC_CONTROL_FAST_PGM_RDIN; if (ctrl->features & BRCMNAND_HAS_PREFETCH) { /* @@ -2195,6 +2257,7 @@ static const struct of_device_id brcmnand_of_match[] = { { .compatible = "brcm,brcmnand-v6.2" }, { .compatible = "brcm,brcmnand-v7.0" }, { .compatible = "brcm,brcmnand-v7.1" }, + { .compatible = "brcm,brcmnand-v7.2" }, {}, }; MODULE_DEVICE_TABLE(of, brcmnand_of_match); -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Florian Fainelli <f.fainelli@gmail.com> To: linux-mtd@lists.infradead.org Cc: Florian Fainelli <f.fainelli@gmail.com>, Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>, Ian Campbell <ijc+devicetree@hellion.org.uk>, Kumar Gala <galak@codeaurora.org>, Brian Norris <computersforpeace@gmail.com>, Kamal Dasu <kdasu.kdev@gmail.com>, Boris Brezillon <boris.brezillon@free-electrons.com>, Richard Weinberger <richard@nod.at>, David Woodhouse <dwmw2@infradead.org>, Simon Arlott <simon@fire.lp0.eu>, "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@vger.kernel.org>, open list <linux-kernel@vger.kernel.org>, "open list:BROADCOM STB NAND FLASH DRIVER" <bcm-kernel-feedback-list@broadcom.com> Subject: [PATCH] mtd: brcmnand: Add v7.2 controller support Date: Fri, 27 May 2016 14:58:11 -0700 [thread overview] Message-ID: <1464386293-18862-1-git-send-email-f.fainelli@gmail.com> (raw) The 7.2 controller differs in a few area compared to its predecssor (7.1): - NAND scrambler, which we are not using just yet - higher ECC levels (up to 120 bits) per 1KB data blocks, also not supported yet - up to 128B OOB This patchs adds the ncessary code to support such a controller generation and updates the Device Tree binding. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- .../devicetree/bindings/mtd/brcm,brcmnand.txt | 1 + drivers/mtd/nand/brcmnand/brcmnand.c | 87 +++++++++++++++++++--- 2 files changed, 76 insertions(+), 12 deletions(-) diff --git a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt index deb24cbdda82..c8d71e75cb09 100644 --- a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt +++ b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt @@ -27,6 +27,7 @@ Required properties: brcm,brcmnand-v6.2 brcm,brcmnand-v7.0 brcm,brcmnand-v7.1 + brcm,brcmnand-v7.2 brcm,brcmnand - reg : the register start and length for NAND register region. (optional) Flash DMA register range (if present) diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c index b76ad7c0144f..6d9c202b816b 100644 --- a/drivers/mtd/nand/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/brcmnand/brcmnand.c @@ -340,6 +340,36 @@ static const u16 brcmnand_regs_v71[] = { [BRCMNAND_FC_BASE] = 0x400, }; +/* BRCMNAND v7.2 */ +static const u16 brcmnand_regs_v72[] = { + [BRCMNAND_CMD_START] = 0x04, + [BRCMNAND_CMD_EXT_ADDRESS] = 0x08, + [BRCMNAND_CMD_ADDRESS] = 0x0c, + [BRCMNAND_INTFC_STATUS] = 0x14, + [BRCMNAND_CS_SELECT] = 0x18, + [BRCMNAND_CS_XOR] = 0x1c, + [BRCMNAND_LL_OP] = 0x20, + [BRCMNAND_CS0_BASE] = 0x50, + [BRCMNAND_CS1_BASE] = 0, + [BRCMNAND_CORR_THRESHOLD] = 0xdc, + [BRCMNAND_CORR_THRESHOLD_EXT] = 0xe0, + [BRCMNAND_UNCORR_COUNT] = 0xfc, + [BRCMNAND_CORR_COUNT] = 0x100, + [BRCMNAND_CORR_EXT_ADDR] = 0x10c, + [BRCMNAND_CORR_ADDR] = 0x110, + [BRCMNAND_UNCORR_EXT_ADDR] = 0x114, + [BRCMNAND_UNCORR_ADDR] = 0x118, + [BRCMNAND_SEMAPHORE] = 0x150, + [BRCMNAND_ID] = 0x194, + [BRCMNAND_ID_EXT] = 0x198, + [BRCMNAND_LL_RDATA] = 0x19c, + [BRCMNAND_OOB_READ_BASE] = 0x200, + [BRCMNAND_OOB_READ_10_BASE] = 0, + [BRCMNAND_OOB_WRITE_BASE] = 0x400, + [BRCMNAND_OOB_WRITE_10_BASE] = 0, + [BRCMNAND_FC_BASE] = 0x600, +}; + enum brcmnand_cs_reg { BRCMNAND_CS_CFG_EXT = 0, BRCMNAND_CS_CFG, @@ -435,7 +465,9 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl) } /* Register offsets */ - if (ctrl->nand_version >= 0x0701) + if (ctrl->nand_version >= 0x0702) + ctrl->reg_offsets = brcmnand_regs_v72; + else if (ctrl->nand_version >= 0x0701) ctrl->reg_offsets = brcmnand_regs_v71; else if (ctrl->nand_version >= 0x0600) ctrl->reg_offsets = brcmnand_regs_v60; @@ -480,6 +512,8 @@ static int brcmnand_revision_init(struct brcmnand_controller *ctrl) } /* Maximum spare area sector size (per 512B) */ + if (ctrl->nand_version >= 0x0702) + ctrl->max_oob = 128; if (ctrl->nand_version >= 0x0600) ctrl->max_oob = 64; else if (ctrl->nand_version >= 0x0500) @@ -583,6 +617,8 @@ 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) + bits = 7; if (ctrl->nand_version >= 0x0600) bits = 6; else if (ctrl->nand_version >= 0x0500) @@ -590,7 +626,11 @@ static void brcmnand_wr_corr_thresh(struct brcmnand_host *host, u8 val) else bits = 4; - if (ctrl->nand_version >= 0x0600) { + if (ctrl->nand_version >= 0x0702) { + if (cs >= 4) + reg = BRCMNAND_CORR_THRESHOLD_EXT; + shift = (cs % 4) * bits; + } else if (ctrl->nand_version >= 0x0600) { if (cs >= 5) reg = BRCMNAND_CORR_THRESHOLD_EXT; shift = (cs % 5) * bits; @@ -631,19 +671,28 @@ enum { static inline u32 brcmnand_spare_area_mask(struct brcmnand_controller *ctrl) { - if (ctrl->nand_version >= 0x0600) + if (ctrl->nand_version >= 0x0702) + return GENMASK(7, 0); + else if (ctrl->nand_version >= 0x0600) return GENMASK(6, 0); else return GENMASK(5, 0); } #define NAND_ACC_CONTROL_ECC_SHIFT 16 +#define NAND_ACC_CONTROL_ECC_EXT_SHIFT 13 static inline u32 brcmnand_ecc_level_mask(struct brcmnand_controller *ctrl) { u32 mask = (ctrl->nand_version >= 0x0600) ? 0x1f : 0x0f; - return mask << NAND_ACC_CONTROL_ECC_SHIFT; + mask <<= NAND_ACC_CONTROL_ECC_SHIFT; + + /* v7.2 includes additional ECC levels */ + if (ctrl->nand_version >= 0x0702) + mask |= 0x7 << NAND_ACC_CONTROL_ECC_EXT_SHIFT; + + return mask; } static void brcmnand_set_ecc_enabled(struct brcmnand_host *host, int en) @@ -667,7 +716,9 @@ static void brcmnand_set_ecc_enabled(struct brcmnand_host *host, int en) static inline int brcmnand_sector_1k_shift(struct brcmnand_controller *ctrl) { - if (ctrl->nand_version >= 0x0600) + if (ctrl->nand_version >= 0x0702) + return 9; + else if (ctrl->nand_version >= 0x0600) return 7; else if (ctrl->nand_version >= 0x0500) return 6; @@ -773,10 +824,16 @@ enum brcmnand_llop_type { * Internal support functions ***********************************************************************/ -static inline bool is_hamming_ecc(struct brcmnand_cfg *cfg) +static inline bool is_hamming_ecc(struct brcmnand_controller *ctrl, + struct brcmnand_cfg *cfg) { - return cfg->sector_size_1k == 0 && cfg->spare_area_size == 16 && - cfg->ecc_level == 15; + if (ctrl->nand_version <= 0x0701) + return cfg->sector_size_1k == 0 && cfg->spare_area_size == 16 && + cfg->ecc_level == 15; + else + return cfg->sector_size_1k == 0 && ((cfg->spare_area_size == 16 && + cfg->ecc_level == 15) || + (cfg->spare_area_size == 28 && cfg->ecc_level == 16)); } /* @@ -931,7 +988,7 @@ static int brcmstb_choose_ecc_layout(struct brcmnand_host *host) if (p->sector_size_1k) ecc_level <<= 1; - if (is_hamming_ecc(p)) { + if (is_hamming_ecc(host->ctrl, p)) { ecc->bytes = 3 * sectors; mtd_set_ooblayout(mtd, &brcmnand_hamming_ooblayout_ops); return 0; @@ -1857,7 +1914,8 @@ static int brcmnand_set_cfg(struct brcmnand_host *host, return 0; } -static void brcmnand_print_cfg(char *buf, struct brcmnand_cfg *cfg) +static void brcmnand_print_cfg(struct brcmnand_host *host, + char *buf, struct brcmnand_cfg *cfg) { buf += sprintf(buf, "%lluMiB total, %uKiB blocks, %u%s pages, %uB OOB, %u-bit", @@ -1868,7 +1926,7 @@ static void brcmnand_print_cfg(char *buf, struct brcmnand_cfg *cfg) cfg->spare_area_size, cfg->device_width); /* Account for Hamming ECC and for BCH 512B vs 1KiB sectors */ - if (is_hamming_ecc(cfg)) + if (is_hamming_ecc(host->ctrl, cfg)) sprintf(buf, ", Hamming ECC"); else if (cfg->sector_size_1k) sprintf(buf, ", BCH-%u (1KiB sector)", cfg->ecc_level << 1); @@ -1987,7 +2045,7 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) brcmnand_set_ecc_enabled(host, 1); - brcmnand_print_cfg(msg, cfg); + brcmnand_print_cfg(host, msg, cfg); dev_info(ctrl->dev, "detected %s\n", msg); /* Configure ACC_CONTROL */ @@ -1995,6 +2053,10 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) tmp = nand_readreg(ctrl, offs); tmp &= ~ACC_CONTROL_PARTIAL_PAGE; tmp &= ~ACC_CONTROL_RD_ERASED; + + /* We need to turn on Read from erased paged protected by ECC */ + if (ctrl->nand_version >= 0x0702) + tmp |= ACC_CONTROL_RD_ERASED; tmp &= ~ACC_CONTROL_FAST_PGM_RDIN; if (ctrl->features & BRCMNAND_HAS_PREFETCH) { /* @@ -2195,6 +2257,7 @@ static const struct of_device_id brcmnand_of_match[] = { { .compatible = "brcm,brcmnand-v6.2" }, { .compatible = "brcm,brcmnand-v7.0" }, { .compatible = "brcm,brcmnand-v7.1" }, + { .compatible = "brcm,brcmnand-v7.2" }, {}, }; MODULE_DEVICE_TABLE(of, brcmnand_of_match); -- 2.7.4
next reply other threads:[~2016-05-27 21:59 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-05-27 21:58 Florian Fainelli [this message] 2016-05-27 21:58 ` [PATCH] mtd: brcmnand: Add v7.2 controller support Florian Fainelli 2016-05-28 18:01 ` Thomas Petazzoni 2016-05-28 18:01 ` Thomas Petazzoni
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