From 2da45b8f069644604e8e05ccb03b2b66ada611d5 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:49 +0200 Subject: [PATCH 01/49] mtd: rawnand: Add a kernel doc to the ECC algorithm enumeration Before moving it to the generic raw NAND core, ensure the enumeration is properly described. Signed-off-by: Miquel Raynal Reviewed-by: Boris Brezillon Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-2-miquel.raynal@bootlin.com --- include/linux/mtd/rawnand.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index a725b620aca2..1495f22b60cb 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -92,6 +92,13 @@ enum nand_ecc_mode { NAND_ECC_ON_DIE, }; +/** + * enum nand_ecc_algo - NAND ECC algorithm + * @NAND_ECC_UNKNOWN: Unknown algorithm + * @NAND_ECC_HAMMING: Hamming algorithm + * @NAND_ECC_BCH: Bose-Chaudhuri-Hocquenghem algorithm + * @NAND_ECC_RS: Reed-Solomon algorithm + */ enum nand_ecc_algo { NAND_ECC_UNKNOWN, NAND_ECC_HAMMING, From e0a564ae0a4bc1bcf156d468955b27d3606e8253 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:50 +0200 Subject: [PATCH 02/49] mtd: rawnand: Rename the ECC algorithm enumeration items NAND_ECC_ is not a meaningful prefix, use NAND_ECC_ALGO_ instead. Signed-off-by: Miquel Raynal Reviewed-by: Boris Brezillon Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-3-miquel.raynal@bootlin.com --- drivers/mtd/nand/raw/ams-delta.c | 2 +- drivers/mtd/nand/raw/arasan-nand-controller.c | 2 +- drivers/mtd/nand/raw/atmel/nand-controller.c | 2 +- drivers/mtd/nand/raw/au1550nd.c | 2 +- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 12 ++++----- drivers/mtd/nand/raw/davinci_nand.c | 8 +++--- drivers/mtd/nand/raw/fsl_elbc_nand.c | 2 +- drivers/mtd/nand/raw/fsl_ifc_nand.c | 2 +- drivers/mtd/nand/raw/fsl_upm.c | 2 +- drivers/mtd/nand/raw/fsmc_nand.c | 2 +- drivers/mtd/nand/raw/gpio.c | 2 +- drivers/mtd/nand/raw/marvell_nand.c | 10 +++---- drivers/mtd/nand/raw/mpc5121_nfc.c | 2 +- drivers/mtd/nand/raw/mxc_nand.c | 2 +- drivers/mtd/nand/raw/nand_base.c | 26 +++++++++---------- drivers/mtd/nand/raw/nand_micron.c | 2 +- drivers/mtd/nand/raw/nandsim.c | 4 +-- drivers/mtd/nand/raw/omap2.c | 2 +- drivers/mtd/nand/raw/orion_nand.c | 2 +- drivers/mtd/nand/raw/pasemi_nand.c | 2 +- drivers/mtd/nand/raw/plat_nand.c | 2 +- drivers/mtd/nand/raw/s3c2410.c | 4 +-- drivers/mtd/nand/raw/sh_flctl.c | 2 +- drivers/mtd/nand/raw/socrates_nand.c | 2 +- drivers/mtd/nand/raw/tango_nand.c | 2 +- drivers/mtd/nand/raw/tegra_nand.c | 20 +++++++------- drivers/mtd/nand/raw/xway_nand.c | 2 +- include/linux/mtd/rawnand.h | 16 ++++++------ 28 files changed, 70 insertions(+), 70 deletions(-) diff --git a/drivers/mtd/nand/raw/ams-delta.c b/drivers/mtd/nand/raw/ams-delta.c index fdba155416d2..21199d9ae9be 100644 --- a/drivers/mtd/nand/raw/ams-delta.c +++ b/drivers/mtd/nand/raw/ams-delta.c @@ -261,7 +261,7 @@ static int gpio_nand_probe(struct platform_device *pdev) } this->ecc.mode = NAND_ECC_SOFT; - this->ecc.algo = NAND_ECC_HAMMING; + this->ecc.algo = NAND_ECC_ALGO_HAMMING; platform_set_drvdata(pdev, priv); diff --git a/drivers/mtd/nand/raw/arasan-nand-controller.c b/drivers/mtd/nand/raw/arasan-nand-controller.c index 12c643e97c85..b0616a95340d 100644 --- a/drivers/mtd/nand/raw/arasan-nand-controller.c +++ b/drivers/mtd/nand/raw/arasan-nand-controller.c @@ -983,7 +983,7 @@ static int anfc_init_hw_ecc_controller(struct arasan_nfc *nfc, mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); ecc->steps = mtd->writesize / ecc->size; - ecc->algo = NAND_ECC_BCH; + ecc->algo = NAND_ECC_ALGO_BCH; anand->ecc_bits = bch_gf_mag * ecc->strength; ecc->bytes = DIV_ROUND_UP(anand->ecc_bits, 8); anand->ecc_total = DIV_ROUND_UP(anand->ecc_bits * ecc->steps, 8); diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index c9818f548d07..8999571bfa5d 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -1099,7 +1099,7 @@ static int atmel_nand_pmecc_init(struct nand_chip *chip) if (IS_ERR(nand->pmecc)) return PTR_ERR(nand->pmecc); - chip->ecc.algo = NAND_ECC_BCH; + chip->ecc.algo = NAND_ECC_ALGO_BCH; chip->ecc.size = req.ecc.sectorsize; chip->ecc.bytes = req.ecc.bytes / req.ecc.nsectors; chip->ecc.strength = req.ecc.strength; diff --git a/drivers/mtd/nand/raw/au1550nd.c b/drivers/mtd/nand/raw/au1550nd.c index d865200ccd08..ec2d90ad87de 100644 --- a/drivers/mtd/nand/raw/au1550nd.c +++ b/drivers/mtd/nand/raw/au1550nd.c @@ -295,7 +295,7 @@ static int au1550nd_probe(struct platform_device *pdev) ctx->controller.ops = &au1550nd_ops; this->controller = &ctx->controller; this->ecc.mode = NAND_ECC_SOFT; - this->ecc.algo = NAND_ECC_HAMMING; + this->ecc.algo = NAND_ECC_ALGO_HAMMING; if (pd->devwidth) this->options |= NAND_BUSWIDTH_16; diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index a4033d32a710..39f1bf327592 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -2571,17 +2571,17 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) return -EINVAL; } - if (chip->ecc.algo == NAND_ECC_UNKNOWN) { + if (chip->ecc.algo == NAND_ECC_ALGO_UNKNOWN) { if (chip->ecc.strength == 1 && chip->ecc.size == 512) /* Default to Hamming for 1-bit ECC, if unspecified */ - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; else /* Otherwise, BCH */ - chip->ecc.algo = NAND_ECC_BCH; + chip->ecc.algo = NAND_ECC_ALGO_BCH; } - if (chip->ecc.algo == NAND_ECC_HAMMING && (chip->ecc.strength != 1 || - chip->ecc.size != 512)) { + if (chip->ecc.algo == NAND_ECC_ALGO_HAMMING && + (chip->ecc.strength != 1 || chip->ecc.size != 512)) { dev_err(ctrl->dev, "invalid Hamming params: %d bits per %d bytes\n", chip->ecc.strength, chip->ecc.size); return -EINVAL; @@ -2600,7 +2600,7 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) switch (chip->ecc.size) { case 512: - if (chip->ecc.algo == NAND_ECC_HAMMING) + if (chip->ecc.algo == NAND_ECC_ALGO_HAMMING) cfg->ecc_level = 15; else cfg->ecc_level = chip->ecc.strength; diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c index d975a62caaa5..551515c223bb 100644 --- a/drivers/mtd/nand/raw/davinci_nand.c +++ b/drivers/mtd/nand/raw/davinci_nand.c @@ -593,11 +593,11 @@ static int davinci_nand_attach_chip(struct nand_chip *chip) pdata->ecc_bits = 0; /* * This driver expects Hamming based ECC when ecc_mode is set - * to NAND_ECC_SOFT. Force ecc.algo to NAND_ECC_HAMMING to + * to NAND_ECC_SOFT. Force ecc.algo to NAND_ECC_ALGO_HAMMING to * avoid adding an extra ->ecc_algo field to * davinci_nand_pdata. */ - info->chip.ecc.algo = NAND_ECC_HAMMING; + info->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; break; case NAND_ECC_HW: if (pdata->ecc_bits == 4) { @@ -629,7 +629,7 @@ static int davinci_nand_attach_chip(struct nand_chip *chip) info->chip.ecc.hwctl = nand_davinci_hwctl_4bit; info->chip.ecc.bytes = 10; info->chip.ecc.options = NAND_ECC_GENERIC_ERASED_CHECK; - info->chip.ecc.algo = NAND_ECC_BCH; + info->chip.ecc.algo = NAND_ECC_ALGO_BCH; /* * Update ECC layout if needed ... for 1-bit HW ECC, the @@ -656,7 +656,7 @@ static int davinci_nand_attach_chip(struct nand_chip *chip) info->chip.ecc.correct = nand_davinci_correct_1bit; info->chip.ecc.hwctl = nand_davinci_hwctl_1bit; info->chip.ecc.bytes = 3; - info->chip.ecc.algo = NAND_ECC_HAMMING; + info->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; } info->chip.ecc.size = 512; info->chip.ecc.strength = pdata->ecc_bits; diff --git a/drivers/mtd/nand/raw/fsl_elbc_nand.c b/drivers/mtd/nand/raw/fsl_elbc_nand.c index 088692b2e27a..da89389faaae 100644 --- a/drivers/mtd/nand/raw/fsl_elbc_nand.c +++ b/drivers/mtd/nand/raw/fsl_elbc_nand.c @@ -748,7 +748,7 @@ static int fsl_elbc_attach_chip(struct nand_chip *chip) } else { /* otherwise fall back to default software ECC */ chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; } break; diff --git a/drivers/mtd/nand/raw/fsl_ifc_nand.c b/drivers/mtd/nand/raw/fsl_ifc_nand.c index 00ae7a910b03..b2ae759dd14e 100644 --- a/drivers/mtd/nand/raw/fsl_ifc_nand.c +++ b/drivers/mtd/nand/raw/fsl_ifc_nand.c @@ -926,7 +926,7 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) } } else { chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; } ret = fsl_ifc_sram_init(priv); diff --git a/drivers/mtd/nand/raw/fsl_upm.c b/drivers/mtd/nand/raw/fsl_upm.c index 197850aeb261..04cf7d14082a 100644 --- a/drivers/mtd/nand/raw/fsl_upm.c +++ b/drivers/mtd/nand/raw/fsl_upm.c @@ -48,7 +48,7 @@ static int fun_chip_init(struct fsl_upm_nand *fun, struct device_node *flash_np; fun->chip.ecc.mode = NAND_ECC_SOFT; - fun->chip.ecc.algo = NAND_ECC_HAMMING; + fun->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; fun->chip.controller = &fun->base; mtd->dev.parent = fun->dev; diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 92ddc41d0ff0..580b9fe8ca42 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -911,7 +911,7 @@ static int fsmc_nand_attach_chip(struct nand_chip *nand) break; case NAND_ECC_SOFT: - if (nand->ecc.algo == NAND_ECC_BCH) { + if (nand->ecc.algo == NAND_ECC_ALGO_BCH) { dev_info(host->dev, "Using 4-bit SW BCH ECC scheme\n"); break; diff --git a/drivers/mtd/nand/raw/gpio.c b/drivers/mtd/nand/raw/gpio.c index 3bd847ccc3f3..c8f498eaabeb 100644 --- a/drivers/mtd/nand/raw/gpio.c +++ b/drivers/mtd/nand/raw/gpio.c @@ -343,7 +343,7 @@ static int gpio_nand_probe(struct platform_device *pdev) nand_set_flash_node(chip, pdev->dev.of_node); chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; chip->options = gpiomtd->plat.options; chip->controller = &gpiomtd->base; diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c index 8482d3bd8b1f..b2200aa787f2 100644 --- a/drivers/mtd/nand/raw/marvell_nand.c +++ b/drivers/mtd/nand/raw/marvell_nand.c @@ -780,7 +780,7 @@ static void marvell_nfc_enable_hw_ecc(struct nand_chip *chip) * When enabling BCH, set threshold to 0 to always know the * number of corrected bitflips. */ - if (chip->ecc.algo == NAND_ECC_BCH) + if (chip->ecc.algo == NAND_ECC_ALGO_BCH) writel_relaxed(NDECCCTRL_BCH_EN, nfc->regs + NDECCCTRL); } } @@ -792,7 +792,7 @@ static void marvell_nfc_disable_hw_ecc(struct nand_chip *chip) if (ndcr & NDCR_ECC_EN) { writel_relaxed(ndcr & ~NDCR_ECC_EN, nfc->regs + NDCR); - if (chip->ecc.algo == NAND_ECC_BCH) + if (chip->ecc.algo == NAND_ECC_ALGO_BCH) writel_relaxed(0, nfc->regs + NDECCCTRL); } } @@ -966,7 +966,7 @@ static int marvell_nfc_hw_ecc_check_bitflips(struct nand_chip *chip, if (ndsr & NDSR_CORERR) { writel_relaxed(ndsr, nfc->regs + NDSR); - if (chip->ecc.algo == NAND_ECC_BCH) + if (chip->ecc.algo == NAND_ECC_ALGO_BCH) bf = NDSR_ERRCNT(ndsr); else bf = 1; @@ -2218,7 +2218,7 @@ static int marvell_nand_hw_ecc_controller_init(struct mtd_info *mtd, ecc->size = l->data_bytes; if (ecc->strength == 1) { - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; ecc->read_page_raw = marvell_nfc_hw_ecc_hmg_read_page_raw; ecc->read_page = marvell_nfc_hw_ecc_hmg_read_page; ecc->read_oob_raw = marvell_nfc_hw_ecc_hmg_read_oob_raw; @@ -2228,7 +2228,7 @@ static int marvell_nand_hw_ecc_controller_init(struct mtd_info *mtd, ecc->write_oob_raw = marvell_nfc_hw_ecc_hmg_write_oob_raw; ecc->write_oob = ecc->write_oob_raw; } else { - chip->ecc.algo = NAND_ECC_BCH; + chip->ecc.algo = NAND_ECC_ALGO_BCH; ecc->strength = 16; ecc->read_page_raw = marvell_nfc_hw_ecc_bch_read_page_raw; ecc->read_page = marvell_nfc_hw_ecc_bch_read_page; diff --git a/drivers/mtd/nand/raw/mpc5121_nfc.c b/drivers/mtd/nand/raw/mpc5121_nfc.c index 18ecb096a32d..a67eded226db 100644 --- a/drivers/mtd/nand/raw/mpc5121_nfc.c +++ b/drivers/mtd/nand/raw/mpc5121_nfc.c @@ -689,7 +689,7 @@ static int mpc5121_nfc_probe(struct platform_device *op) chip->legacy.get_features = nand_get_set_features_notsupp; chip->bbt_options = NAND_BBT_USE_FLASH; chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; /* Support external chip-select logic on ADS5121 board */ if (of_machine_is_compatible("fsl,mpc5121ads")) { diff --git a/drivers/mtd/nand/raw/mxc_nand.c b/drivers/mtd/nand/raw/mxc_nand.c index a043d76b48cb..65448fb223b8 100644 --- a/drivers/mtd/nand/raw/mxc_nand.c +++ b/drivers/mtd/nand/raw/mxc_nand.c @@ -1846,7 +1846,7 @@ static int mxcnd_probe(struct platform_device *pdev) this->ecc.mode = NAND_ECC_HW; } else { this->ecc.mode = NAND_ECC_SOFT; - this->ecc.algo = NAND_ECC_HAMMING; + this->ecc.algo = NAND_ECC_ALGO_HAMMING; } /* NAND bus width determines access functions used by upper layer */ diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 0c768cb88f96..e22a7f9986b1 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5066,9 +5066,9 @@ static int of_get_nand_ecc_mode(struct device_node *np) } static const char * const nand_ecc_algos[] = { - [NAND_ECC_HAMMING] = "hamming", - [NAND_ECC_BCH] = "bch", - [NAND_ECC_RS] = "rs", + [NAND_ECC_ALGO_HAMMING] = "hamming", + [NAND_ECC_ALGO_BCH] = "bch", + [NAND_ECC_ALGO_RS] = "rs", }; static enum nand_ecc_algo of_get_nand_ecc_algo(struct device_node *np) @@ -5079,7 +5079,7 @@ static enum nand_ecc_algo of_get_nand_ecc_algo(struct device_node *np) err = of_property_read_string(np, "nand-ecc-algo", &pm); if (!err) { - for (ecc_algo = NAND_ECC_HAMMING; + for (ecc_algo = NAND_ECC_ALGO_HAMMING; ecc_algo < ARRAY_SIZE(nand_ecc_algos); ecc_algo++) { if (!strcasecmp(pm, nand_ecc_algos[ecc_algo])) @@ -5094,12 +5094,12 @@ static enum nand_ecc_algo of_get_nand_ecc_algo(struct device_node *np) err = of_property_read_string(np, "nand-ecc-mode", &pm); if (!err) { if (!strcasecmp(pm, "soft")) - return NAND_ECC_HAMMING; + return NAND_ECC_ALGO_HAMMING; else if (!strcasecmp(pm, "soft_bch")) - return NAND_ECC_BCH; + return NAND_ECC_ALGO_BCH; } - return NAND_ECC_UNKNOWN; + return NAND_ECC_ALGO_UNKNOWN; } static int of_get_nand_ecc_step_size(struct device_node *np) @@ -5167,7 +5167,7 @@ static int nand_dt_init(struct nand_chip *chip) if (ecc_mode >= 0) chip->ecc.mode = ecc_mode; - if (ecc_algo != NAND_ECC_UNKNOWN) + if (ecc_algo != NAND_ECC_ALGO_UNKNOWN) chip->ecc.algo = ecc_algo; if (ecc_strength >= 0) @@ -5291,7 +5291,7 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip) return -EINVAL; switch (ecc->algo) { - case NAND_ECC_HAMMING: + case NAND_ECC_ALGO_HAMMING: ecc->calculate = nand_calculate_ecc; ecc->correct = nand_correct_data; ecc->read_page = nand_read_page_swecc; @@ -5312,7 +5312,7 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip) ecc->options |= NAND_ECC_SOFT_HAMMING_SM_ORDER; return 0; - case NAND_ECC_BCH: + case NAND_ECC_ALGO_BCH: if (!mtd_nand_has_bch()) { WARN(1, "CONFIG_MTD_NAND_ECC_SW_BCH not enabled\n"); return -EINVAL; @@ -5752,7 +5752,7 @@ static int nand_scan_tail(struct nand_chip *chip) * If no default placement scheme is given, select an appropriate one. */ if (!mtd->ooblayout && - !(ecc->mode == NAND_ECC_SOFT && ecc->algo == NAND_ECC_BCH)) { + !(ecc->mode == NAND_ECC_SOFT && ecc->algo == NAND_ECC_ALGO_BCH)) { switch (mtd->oobsize) { case 8: case 16: @@ -5843,7 +5843,7 @@ static int nand_scan_tail(struct nand_chip *chip) pr_warn("%d byte HW ECC not possible on %d byte page size, fallback to SW ECC\n", ecc->size, mtd->writesize); ecc->mode = NAND_ECC_SOFT; - ecc->algo = NAND_ECC_HAMMING; + ecc->algo = NAND_ECC_ALGO_HAMMING; fallthrough; case NAND_ECC_SOFT: ret = nand_set_ecc_soft_ops(chip); @@ -6102,7 +6102,7 @@ EXPORT_SYMBOL(nand_scan_with_ids); void nand_cleanup(struct nand_chip *chip) { if (chip->ecc.mode == NAND_ECC_SOFT && - chip->ecc.algo == NAND_ECC_BCH) + chip->ecc.algo == NAND_ECC_ALGO_BCH) nand_bch_free((struct nand_bch_control *)chip->ecc.priv); nanddev_cleanup(&chip->base); diff --git a/drivers/mtd/nand/raw/nand_micron.c b/drivers/mtd/nand/raw/nand_micron.c index 4385092a9325..2d54a3aa15b1 100644 --- a/drivers/mtd/nand/raw/nand_micron.c +++ b/drivers/mtd/nand/raw/nand_micron.c @@ -543,7 +543,7 @@ static int micron_nand_init(struct nand_chip *chip) chip->ecc.bytes = chip->base.eccreq.strength * 2; chip->ecc.size = 512; chip->ecc.strength = chip->base.eccreq.strength; - chip->ecc.algo = NAND_ECC_BCH; + chip->ecc.algo = NAND_ECC_ALGO_BCH; chip->ecc.read_page = micron_nand_read_page_on_die_ecc; chip->ecc.write_page = micron_nand_write_page_on_die_ecc; diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c index f5a53aac3c5f..1ab849ccaa96 100644 --- a/drivers/mtd/nand/raw/nandsim.c +++ b/drivers/mtd/nand/raw/nandsim.c @@ -2235,7 +2235,7 @@ static int ns_attach_chip(struct nand_chip *chip) } chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_BCH; + chip->ecc.algo = NAND_ECC_ALGO_BCH; chip->ecc.size = 512; chip->ecc.strength = bch; chip->ecc.bytes = eccbytes; @@ -2275,7 +2275,7 @@ static int __init ns_init_module(void) nand_set_controller_data(chip, (void *)ns); chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; /* The NAND_SKIP_BBTSCAN option is necessary for 'overridesize' */ /* and 'badblocks' parameters to work */ chip->options |= NAND_SKIP_BBTSCAN; diff --git a/drivers/mtd/nand/raw/omap2.c b/drivers/mtd/nand/raw/omap2.c index eb7fcfd9276b..967ddbda1c48 100644 --- a/drivers/mtd/nand/raw/omap2.c +++ b/drivers/mtd/nand/raw/omap2.c @@ -2011,7 +2011,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip) */ if (info->ecc_opt == OMAP_ECC_HAM1_CODE_SW) { chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; return 0; } diff --git a/drivers/mtd/nand/raw/orion_nand.c b/drivers/mtd/nand/raw/orion_nand.c index 880b54ca1b41..7a5cfa3d883f 100644 --- a/drivers/mtd/nand/raw/orion_nand.c +++ b/drivers/mtd/nand/raw/orion_nand.c @@ -140,7 +140,7 @@ static int __init orion_nand_probe(struct platform_device *pdev) nc->legacy.cmd_ctrl = orion_nand_cmd_ctrl; nc->legacy.read_buf = orion_nand_read_buf; nc->ecc.mode = NAND_ECC_SOFT; - nc->ecc.algo = NAND_ECC_HAMMING; + nc->ecc.algo = NAND_ECC_ALGO_HAMMING; if (board->chip_delay) nc->legacy.chip_delay = board->chip_delay; diff --git a/drivers/mtd/nand/raw/pasemi_nand.c b/drivers/mtd/nand/raw/pasemi_nand.c index d8eca8c3fdcd..3eddc284614d 100644 --- a/drivers/mtd/nand/raw/pasemi_nand.c +++ b/drivers/mtd/nand/raw/pasemi_nand.c @@ -133,7 +133,7 @@ static int pasemi_nand_probe(struct platform_device *ofdev) chip->legacy.write_buf = pasemi_write_buf; chip->legacy.chip_delay = 0; chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; /* Enable the following for a flash based bad block table */ chip->bbt_options = NAND_BBT_USE_FLASH; diff --git a/drivers/mtd/nand/raw/plat_nand.c b/drivers/mtd/nand/raw/plat_nand.c index 556182f26057..dbc089c8872f 100644 --- a/drivers/mtd/nand/raw/plat_nand.c +++ b/drivers/mtd/nand/raw/plat_nand.c @@ -67,7 +67,7 @@ static int plat_nand_probe(struct platform_device *pdev) data->chip.bbt_options |= pdata->chip.bbt_options; data->chip.ecc.mode = NAND_ECC_SOFT; - data->chip.ecc.algo = NAND_ECC_HAMMING; + data->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; platform_set_drvdata(pdev, data); diff --git a/drivers/mtd/nand/raw/s3c2410.c b/drivers/mtd/nand/raw/s3c2410.c index 105522205979..5a39002d67ef 100644 --- a/drivers/mtd/nand/raw/s3c2410.c +++ b/drivers/mtd/nand/raw/s3c2410.c @@ -938,11 +938,11 @@ static int s3c2410_nand_attach_chip(struct nand_chip *chip) case NAND_ECC_SOFT: /* * This driver expects Hamming based ECC when ecc_mode is set - * to NAND_ECC_SOFT. Force ecc.algo to NAND_ECC_HAMMING to + * to NAND_ECC_SOFT. Force ecc.algo to NAND_ECC_ALGO_HAMMING to * avoid adding an extra ecc_algo field to * s3c2410_platform_nand. */ - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; dev_info(info->device, "soft ECC\n"); break; diff --git a/drivers/mtd/nand/raw/sh_flctl.c b/drivers/mtd/nand/raw/sh_flctl.c index a661b8bb2dd5..9dbd6fdbe264 100644 --- a/drivers/mtd/nand/raw/sh_flctl.c +++ b/drivers/mtd/nand/raw/sh_flctl.c @@ -1045,7 +1045,7 @@ static int flctl_chip_attach_chip(struct nand_chip *chip) flctl->flcmncr_base |= _4ECCEN; } else { chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; + chip->ecc.algo = NAND_ECC_ALGO_HAMMING; } return 0; diff --git a/drivers/mtd/nand/raw/socrates_nand.c b/drivers/mtd/nand/raw/socrates_nand.c index 243b34cfbc1b..72a3a7f98282 100644 --- a/drivers/mtd/nand/raw/socrates_nand.c +++ b/drivers/mtd/nand/raw/socrates_nand.c @@ -154,7 +154,7 @@ static int socrates_nand_probe(struct platform_device *ofdev) nand_chip->legacy.dev_ready = socrates_nand_device_ready; nand_chip->ecc.mode = NAND_ECC_SOFT; /* enable ECC */ - nand_chip->ecc.algo = NAND_ECC_HAMMING; + nand_chip->ecc.algo = NAND_ECC_ALGO_HAMMING; /* TODO: I have no idea what real delay is. */ nand_chip->legacy.chip_delay = 20; /* 20us command delay time */ diff --git a/drivers/mtd/nand/raw/tango_nand.c b/drivers/mtd/nand/raw/tango_nand.c index bdb965ae7a4a..021ceef4ad0a 100644 --- a/drivers/mtd/nand/raw/tango_nand.c +++ b/drivers/mtd/nand/raw/tango_nand.c @@ -550,7 +550,7 @@ static int tango_attach_chip(struct nand_chip *chip) struct nand_ecc_ctrl *ecc = &chip->ecc; ecc->mode = NAND_ECC_HW; - ecc->algo = NAND_ECC_BCH; + ecc->algo = NAND_ECC_ALGO_BCH; ecc->bytes = DIV_ROUND_UP(ecc->strength * FIELD_ORDER, BITS_PER_BYTE); ecc->read_page_raw = tango_read_page_raw; diff --git a/drivers/mtd/nand/raw/tegra_nand.c b/drivers/mtd/nand/raw/tegra_nand.c index 6b6212ffa01c..0d6f3c6d6e11 100644 --- a/drivers/mtd/nand/raw/tegra_nand.c +++ b/drivers/mtd/nand/raw/tegra_nand.c @@ -479,7 +479,7 @@ static void tegra_nand_hw_ecc(struct tegra_nand_controller *ctrl, { struct tegra_nand_chip *nand = to_tegra_chip(chip); - if (chip->ecc.algo == NAND_ECC_BCH && enable) + if (chip->ecc.algo == NAND_ECC_ALGO_BCH && enable) writel_relaxed(nand->bch_config, ctrl->regs + BCH_CONFIG); else writel_relaxed(0, ctrl->regs + BCH_CONFIG); @@ -877,7 +877,7 @@ static int tegra_nand_select_strength(struct nand_chip *chip, int oobsize) int strength_len, bits_per_step; switch (chip->ecc.algo) { - case NAND_ECC_RS: + case NAND_ECC_ALGO_RS: bits_per_step = BITS_PER_STEP_RS; if (chip->options & NAND_IS_BOOT_MEDIUM) { strength = rs_strength_bootable; @@ -887,7 +887,7 @@ static int tegra_nand_select_strength(struct nand_chip *chip, int oobsize) strength_len = ARRAY_SIZE(rs_strength); } break; - case NAND_ECC_BCH: + case NAND_ECC_ALGO_BCH: bits_per_step = BITS_PER_STEP_BCH; if (chip->options & NAND_IS_BOOT_MEDIUM) { strength = bch_strength_bootable; @@ -935,14 +935,14 @@ static int tegra_nand_attach_chip(struct nand_chip *chip) if (chip->options & NAND_BUSWIDTH_16) nand->config |= CONFIG_BUS_WIDTH_16; - if (chip->ecc.algo == NAND_ECC_UNKNOWN) { + if (chip->ecc.algo == NAND_ECC_ALGO_UNKNOWN) { if (mtd->writesize < 2048) - chip->ecc.algo = NAND_ECC_RS; + chip->ecc.algo = NAND_ECC_ALGO_RS; else - chip->ecc.algo = NAND_ECC_BCH; + chip->ecc.algo = NAND_ECC_ALGO_BCH; } - if (chip->ecc.algo == NAND_ECC_BCH && mtd->writesize < 2048) { + if (chip->ecc.algo == NAND_ECC_ALGO_BCH && mtd->writesize < 2048) { dev_err(ctrl->dev, "BCH supports 2K or 4K page size only\n"); return -EINVAL; } @@ -963,7 +963,7 @@ static int tegra_nand_attach_chip(struct nand_chip *chip) CONFIG_SKIP_SPARE_SIZE_4; switch (chip->ecc.algo) { - case NAND_ECC_RS: + case NAND_ECC_ALGO_RS: bits_per_step = BITS_PER_STEP_RS * chip->ecc.strength; mtd_set_ooblayout(mtd, &tegra_nand_oob_rs_ops); nand->config_ecc |= CONFIG_HW_ECC | CONFIG_ECC_SEL | @@ -984,7 +984,7 @@ static int tegra_nand_attach_chip(struct nand_chip *chip) return -EINVAL; } break; - case NAND_ECC_BCH: + case NAND_ECC_ALGO_BCH: bits_per_step = BITS_PER_STEP_BCH * chip->ecc.strength; mtd_set_ooblayout(mtd, &tegra_nand_oob_bch_ops); nand->bch_config = BCH_ENABLE; @@ -1013,7 +1013,7 @@ static int tegra_nand_attach_chip(struct nand_chip *chip) } dev_info(ctrl->dev, "Using %s with strength %d per 512 byte step\n", - chip->ecc.algo == NAND_ECC_BCH ? "BCH" : "RS", + chip->ecc.algo == NAND_ECC_ALGO_BCH ? "BCH" : "RS", chip->ecc.strength); chip->ecc.bytes = DIV_ROUND_UP(bits_per_step, BITS_PER_BYTE); diff --git a/drivers/mtd/nand/raw/xway_nand.c b/drivers/mtd/nand/raw/xway_nand.c index 29255476afdb..b279ed143b8f 100644 --- a/drivers/mtd/nand/raw/xway_nand.c +++ b/drivers/mtd/nand/raw/xway_nand.c @@ -181,7 +181,7 @@ static int xway_nand_probe(struct platform_device *pdev) data->chip.legacy.chip_delay = 30; data->chip.ecc.mode = NAND_ECC_SOFT; - data->chip.ecc.algo = NAND_ECC_HAMMING; + data->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; platform_set_drvdata(pdev, data); nand_set_controller_data(&data->chip, data); diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 1495f22b60cb..8174c0c331a1 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -94,16 +94,16 @@ enum nand_ecc_mode { /** * enum nand_ecc_algo - NAND ECC algorithm - * @NAND_ECC_UNKNOWN: Unknown algorithm - * @NAND_ECC_HAMMING: Hamming algorithm - * @NAND_ECC_BCH: Bose-Chaudhuri-Hocquenghem algorithm - * @NAND_ECC_RS: Reed-Solomon algorithm + * @NAND_ECC_ALGO_UNKNOWN: Unknown algorithm + * @NAND_ECC_ALGO_HAMMING: Hamming algorithm + * @NAND_ECC_ALGO_BCH: Bose-Chaudhuri-Hocquenghem algorithm + * @NAND_ECC_ALGO_RS: Reed-Solomon algorithm */ enum nand_ecc_algo { - NAND_ECC_UNKNOWN, - NAND_ECC_HAMMING, - NAND_ECC_BCH, - NAND_ECC_RS, + NAND_ECC_ALGO_UNKNOWN, + NAND_ECC_ALGO_HAMMING, + NAND_ECC_ALGO_BCH, + NAND_ECC_ALGO_RS, }; /* From f2f64c1e924131878179da64794d9cb18ee5c827 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:51 +0200 Subject: [PATCH 03/49] mtd: rawnand: Move the nand_ecc_algo enum to the generic NAND layer This enumeration is generic and will be reused NAND-wide. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-4-miquel.raynal@bootlin.com --- include/linux/mtd/nand.h | 14 ++++++++++++++ include/linux/mtd/rawnand.h | 14 -------------- 2 files changed, 14 insertions(+), 14 deletions(-) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index af99041ceaa9..986c7de83326 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -115,6 +115,20 @@ struct nand_page_io_req { int mode; }; +/** + * enum nand_ecc_algo - NAND ECC algorithm + * @NAND_ECC_ALGO_UNKNOWN: Unknown algorithm + * @NAND_ECC_ALGO_HAMMING: Hamming algorithm + * @NAND_ECC_ALGO_BCH: Bose-Chaudhuri-Hocquenghem algorithm + * @NAND_ECC_ALGO_RS: Reed-Solomon algorithm + */ +enum nand_ecc_algo { + NAND_ECC_ALGO_UNKNOWN, + NAND_ECC_ALGO_HAMMING, + NAND_ECC_ALGO_BCH, + NAND_ECC_ALGO_RS, +}; + /** * struct nand_ecc_props - NAND ECC properties * @strength: ECC strength diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 8174c0c331a1..10bbfbf4ad7f 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -92,20 +92,6 @@ enum nand_ecc_mode { NAND_ECC_ON_DIE, }; -/** - * enum nand_ecc_algo - NAND ECC algorithm - * @NAND_ECC_ALGO_UNKNOWN: Unknown algorithm - * @NAND_ECC_ALGO_HAMMING: Hamming algorithm - * @NAND_ECC_ALGO_BCH: Bose-Chaudhuri-Hocquenghem algorithm - * @NAND_ECC_ALGO_RS: Reed-Solomon algorithm - */ -enum nand_ecc_algo { - NAND_ECC_ALGO_UNKNOWN, - NAND_ECC_ALGO_HAMMING, - NAND_ECC_ALGO_BCH, - NAND_ECC_ALGO_RS, -}; - /* * Constants for Hardware ECC */ From 701981cab01696584a12e5f0e7c2ad931a326059 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:52 +0200 Subject: [PATCH 04/49] mtd: nand: Add a NAND page I/O request type Use an enum to differentiate the type of I/O (reading or writing a page). Also update the request iterator. Signed-off-by: Miquel Raynal Reviewed-by: Boris Brezillon Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-5-miquel.raynal@bootlin.com --- drivers/mtd/nand/spi/core.c | 4 ++-- include/linux/mtd/nand.h | 18 ++++++++++++++++-- 2 files changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index e2c382ffc5b6..4725d390c87c 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -497,7 +497,7 @@ static int spinand_mtd_read(struct mtd_info *mtd, loff_t from, mutex_lock(&spinand->lock); - nanddev_io_for_each_page(nand, from, ops, &iter) { + nanddev_io_for_each_page(nand, NAND_PAGE_READ, from, ops, &iter) { ret = spinand_select_target(spinand, iter.req.pos.target); if (ret) break; @@ -545,7 +545,7 @@ static int spinand_mtd_write(struct mtd_info *mtd, loff_t to, mutex_lock(&spinand->lock); - nanddev_io_for_each_page(nand, to, ops, &iter) { + nanddev_io_for_each_page(nand, NAND_PAGE_WRITE, to, ops, &iter) { ret = spinand_select_target(spinand, iter.req.pos.target); if (ret) break; diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 986c7de83326..e754a6fc8a4b 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -82,8 +82,19 @@ struct nand_pos { unsigned int page; }; +/** + * enum nand_page_io_req_type - Direction of an I/O request + * @NAND_PAGE_READ: from the chip, to the controller + * @NAND_PAGE_WRITE: from the controller, to the chip + */ +enum nand_page_io_req_type { + NAND_PAGE_READ = 0, + NAND_PAGE_WRITE, +}; + /** * struct nand_page_io_req - NAND I/O request object + * @type: the type of page I/O: read or write * @pos: the position this I/O request is targeting * @dataoffs: the offset within the page * @datalen: number of data bytes to read from/write to this page @@ -99,6 +110,7 @@ struct nand_pos { * specific commands/operations. */ struct nand_page_io_req { + enum nand_page_io_req_type type; struct nand_pos pos; unsigned int dataoffs; unsigned int datalen; @@ -638,11 +650,13 @@ static inline void nanddev_pos_next_page(struct nand_device *nand, * layer. */ static inline void nanddev_io_iter_init(struct nand_device *nand, + enum nand_page_io_req_type reqtype, loff_t offs, struct mtd_oob_ops *req, struct nand_io_iter *iter) { struct mtd_info *mtd = nanddev_to_mtd(nand); + iter->req.type = reqtype; iter->req.mode = req->mode; iter->req.dataoffs = nanddev_offs_to_pos(nand, offs, &iter->req.pos); iter->req.ooboffs = req->ooboffs; @@ -712,8 +726,8 @@ static inline bool nanddev_io_iter_end(struct nand_device *nand, * * Should be used for iterate over pages that are contained in an MTD request. */ -#define nanddev_io_for_each_page(nand, start, req, iter) \ - for (nanddev_io_iter_init(nand, start, req, iter); \ +#define nanddev_io_for_each_page(nand, type, start, req, iter) \ + for (nanddev_io_iter_init(nand, type, start, req, iter); \ !nanddev_io_iter_end(nand, iter); \ nanddev_io_iter_next_page(nand, iter)) From 2d76f470224617fadfb35853d7d782b5caa56f9a Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:53 +0200 Subject: [PATCH 05/49] dt-bindings: mtd: Document nand-ecc-placement This optional property defines where the ECC bytes are expected to be stored. No value defaults to an unknown location, while these locations can be explicitly set to OOB or interleaved depending if the ECC bytes are entirely stored in the OOB area or mixed with regular data in the main area (also sometimes referred as "syndrome"). Signed-off-by: Miquel Raynal Reviewed-by: Boris Brezillon Acked-by: Rob Herring Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-6-miquel.raynal@bootlin.com --- .../devicetree/bindings/mtd/nand-controller.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml index 40fc5b0b2b8c..02f0347ff102 100644 --- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml +++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml @@ -55,6 +55,16 @@ patternProperties: $ref: /schemas/types.yaml#/definitions/string enum: [none, soft, hw, hw_syndrome, hw_oob_first, on-die] + nand-ecc-placement: + allOf: + - $ref: /schemas/types.yaml#/definitions/string + - enum: [ oob, interleaved ] + description: + Location of the ECC bytes. This location is unknown by default + but can be explicitly set to "oob", if all ECC bytes are + known to be stored in the OOB area, or "interleaved" if ECC + bytes will be interleaved with regular data in the main area. + nand-ecc-algo: description: Desired ECC algorithm. From 457700644f58ae4bf97ad35cbdce21710959a7e7 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:54 +0200 Subject: [PATCH 06/49] dt-bindings: mtd: Document nand-ecc-engine This property is needed to precisely point to the hardware ECC engine to use when there are several of them available. Here, hardware also refers to the on-die possibility. Signed-off-by: Miquel Raynal Reviewed-by: Rob Herring Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-7-miquel.raynal@bootlin.com --- .../devicetree/bindings/mtd/nand-controller.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml index 02f0347ff102..ba7f8e4db5a5 100644 --- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml +++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml @@ -55,6 +55,19 @@ patternProperties: $ref: /schemas/types.yaml#/definitions/string enum: [none, soft, hw, hw_syndrome, hw_oob_first, on-die] + nand-ecc-engine: + allOf: + - $ref: /schemas/types.yaml#/definitions/phandle + description: | + A phandle on the hardware ECC engine if any. There are + basically three possibilities: + 1/ The ECC engine is part of the NAND controller, in this + case the phandle should reference the parent node. + 2/ The ECC engine is part of the NAND part (on-die), in this + case the phandle should reference the node itself. + 3/ The ECC engine is external, in this case the phandle should + reference the specific ECC engine node. + nand-ecc-placement: allOf: - $ref: /schemas/types.yaml#/definitions/string From b440915af2e41daff7ee33e1d0ec29af5c37a1bf Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:55 +0200 Subject: [PATCH 07/49] dt-bindings: mtd: Document boolean NAND ECC properties Document nand-use-soft-ecc-engine and nand-no-ecc-engine properties. The former is here to force software correction, the latter prevents any correction to happen. These properties (along with nand-ecc-engine) are supposed to be more accurate than the current nand-ecc-modes wich is very misleading and very often people think it is mandatory while the core should be relied upon to decide which correction to handle. nand-ecc-mode was already inacurate, but it becomes totally problematic with setups where there are several hardware engines. Signed-off-by: Miquel Raynal Reviewed-by: Rob Herring Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-8-miquel.raynal@bootlin.com --- .../devicetree/bindings/mtd/nand-controller.yaml | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml index ba7f8e4db5a5..e79bb6d2c108 100644 --- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml +++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml @@ -68,6 +68,14 @@ patternProperties: 3/ The ECC engine is external, in this case the phandle should reference the specific ECC engine node. + nand-use-soft-ecc-engine: + type: boolean + description: Use a software ECC engine. + + nand-no-ecc-engine: + type: boolean + description: Do not use any ECC correction. + nand-ecc-placement: allOf: - $ref: /schemas/types.yaml#/definitions/string From a8c7ffdb5fdde3a57c0b654f66f4d81325abe69f Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:56 +0200 Subject: [PATCH 08/49] mtd: nand: Introduce the ECC engine framework Create a generic ECC engine framework. This is a base to instantiate ECC engine objects. If we really want to be generic, bindings must evolve, so here is the new logic. The following three properties are mutually exclusive: - The nand-no-ecc-engine boolean property is set and there is no ECC engine to retrieve. - The nand-use-soft-ecc-engine boolean property is set and the core will force using the use of software correction. - There is a nand-ecc-engine property pointing at a node which will act as ECC engine. It the later case, the property may reference: - The NAND chip node itself (for the on-die ECC case). - The parent node if the NAND controller embeds an ECC engine. - Any other node being an external ECC controller as well. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-9-miquel.raynal@bootlin.com --- drivers/mtd/nand/Kconfig | 8 + drivers/mtd/nand/Makefile | 2 + drivers/mtd/nand/ecc.c | 484 ++++++++++++++++++++++++++++++++++++++ include/linux/mtd/nand.h | 114 +++++++++ 4 files changed, 608 insertions(+) create mode 100644 drivers/mtd/nand/ecc.c diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index c1a45b071165..4a9aed4f0104 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -9,4 +9,12 @@ source "drivers/mtd/nand/onenand/Kconfig" source "drivers/mtd/nand/raw/Kconfig" source "drivers/mtd/nand/spi/Kconfig" +menu "ECC engine support" + +config MTD_NAND_ECC + bool + depends on MTD_NAND_CORE + +endmenu + endmenu diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 7ecd80c0a66e..981372953b56 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -6,3 +6,5 @@ obj-$(CONFIG_MTD_NAND_CORE) += nandcore.o obj-y += onenand/ obj-y += raw/ obj-y += spi/ + +nandcore-$(CONFIG_MTD_NAND_ECC) += ecc.o diff --git a/drivers/mtd/nand/ecc.c b/drivers/mtd/nand/ecc.c new file mode 100644 index 000000000000..4a56e6c0da67 --- /dev/null +++ b/drivers/mtd/nand/ecc.c @@ -0,0 +1,484 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Generic Error-Correcting Code (ECC) engine + * + * Copyright (C) 2019 Macronix + * Author: + * Miquèl RAYNAL + * + * + * This file describes the abstraction of any NAND ECC engine. It has been + * designed to fit most cases, including parallel NANDs and SPI-NANDs. + * + * There are three main situations where instantiating this ECC engine makes + * sense: + * - external: The ECC engine is outside the NAND pipeline, typically this + * is a software ECC engine, or an hardware engine that is + * outside the NAND controller pipeline. + * - pipelined: The ECC engine is inside the NAND pipeline, ie. on the + * controller's side. This is the case of most of the raw NAND + * controllers. In the pipeline case, the ECC bytes are + * generated/data corrected on the fly when a page is + * written/read. + * - ondie: The ECC engine is inside the NAND pipeline, on the chip's side. + * Some NAND chips can correct themselves the data. + * + * Besides the initial setup and final cleanups, the interfaces are rather + * simple: + * - prepare: Prepare an I/O request. Enable/disable the ECC engine based on + * the I/O request type. In case of software correction or external + * engine, this step may involve to derive the ECC bytes and place + * them in the OOB area before a write. + * - finish: Finish an I/O request. Correct the data in case of a read + * request and report the number of corrected bits/uncorrectable + * errors. Most likely empty for write operations, unless you have + * hardware specific stuff to do, like shutting down the engine to + * save power. + * + * The I/O request should be enclosed in a prepare()/finish() pair of calls + * and will behave differently depending on the requested I/O type: + * - raw: Correction disabled + * - ecc: Correction enabled + * + * The request direction is impacting the logic as well: + * - read: Load data from the NAND chip + * - write: Store data in the NAND chip + * + * Mixing all this combinations together gives the following behavior. + * Those are just examples, drivers are free to add custom steps in their + * prepare/finish hook. + * + * [external ECC engine] + * - external + prepare + raw + read: do nothing + * - external + finish + raw + read: do nothing + * - external + prepare + raw + write: do nothing + * - external + finish + raw + write: do nothing + * - external + prepare + ecc + read: do nothing + * - external + finish + ecc + read: calculate expected ECC bytes, extract + * ECC bytes from OOB buffer, correct + * and report any bitflip/error + * - external + prepare + ecc + write: calculate ECC bytes and store them at + * the right place in the OOB buffer based + * on the OOB layout + * - external + finish + ecc + write: do nothing + * + * [pipelined ECC engine] + * - pipelined + prepare + raw + read: disable the controller's ECC engine if + * activated + * - pipelined + finish + raw + read: do nothing + * - pipelined + prepare + raw + write: disable the controller's ECC engine if + * activated + * - pipelined + finish + raw + write: do nothing + * - pipelined + prepare + ecc + read: enable the controller's ECC engine if + * deactivated + * - pipelined + finish + ecc + read: check the status, report any + * error/bitflip + * - pipelined + prepare + ecc + write: enable the controller's ECC engine if + * deactivated + * - pipelined + finish + ecc + write: do nothing + * + * [ondie ECC engine] + * - ondie + prepare + raw + read: send commands to disable the on-chip ECC + * engine if activated + * - ondie + finish + raw + read: do nothing + * - ondie + prepare + raw + write: send commands to disable the on-chip ECC + * engine if activated + * - ondie + finish + raw + write: do nothing + * - ondie + prepare + ecc + read: send commands to enable the on-chip ECC + * engine if deactivated + * - ondie + finish + ecc + read: send commands to check the status, report + * any error/bitflip + * - ondie + prepare + ecc + write: send commands to enable the on-chip ECC + * engine if deactivated + * - ondie + finish + ecc + write: do nothing + */ + +#include +#include + +/** + * nand_ecc_init_ctx - Init the ECC engine context + * @nand: the NAND device + * + * On success, the caller is responsible of calling @nand_ecc_cleanup_ctx(). + */ +int nand_ecc_init_ctx(struct nand_device *nand) +{ + if (!nand->ecc.engine->ops->init_ctx) + return 0; + + return nand->ecc.engine->ops->init_ctx(nand); +} +EXPORT_SYMBOL(nand_ecc_init_ctx); + +/** + * nand_ecc_cleanup_ctx - Cleanup the ECC engine context + * @nand: the NAND device + */ +void nand_ecc_cleanup_ctx(struct nand_device *nand) +{ + if (nand->ecc.engine->ops->cleanup_ctx) + nand->ecc.engine->ops->cleanup_ctx(nand); +} +EXPORT_SYMBOL(nand_ecc_cleanup_ctx); + +/** + * nand_ecc_prepare_io_req - Prepare an I/O request + * @nand: the NAND device + * @req: the I/O request + */ +int nand_ecc_prepare_io_req(struct nand_device *nand, + struct nand_page_io_req *req) +{ + if (!nand->ecc.engine->ops->prepare_io_req) + return 0; + + return nand->ecc.engine->ops->prepare_io_req(nand, req); +} +EXPORT_SYMBOL(nand_ecc_prepare_io_req); + +/** + * nand_ecc_finish_io_req - Finish an I/O request + * @nand: the NAND device + * @req: the I/O request + */ +int nand_ecc_finish_io_req(struct nand_device *nand, + struct nand_page_io_req *req) +{ + if (!nand->ecc.engine->ops->finish_io_req) + return 0; + + return nand->ecc.engine->ops->finish_io_req(nand, req); +} +EXPORT_SYMBOL(nand_ecc_finish_io_req); + +/* Define default OOB placement schemes for large and small page devices */ +static int nand_ooblayout_ecc_sp(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_device *nand = mtd_to_nanddev(mtd); + unsigned int total_ecc_bytes = nand->ecc.ctx.total; + + if (section > 1) + return -ERANGE; + + if (!section) { + oobregion->offset = 0; + if (mtd->oobsize == 16) + oobregion->length = 4; + else + oobregion->length = 3; + } else { + if (mtd->oobsize == 8) + return -ERANGE; + + oobregion->offset = 6; + oobregion->length = total_ecc_bytes - 4; + } + + return 0; +} + +static int nand_ooblayout_free_sp(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + if (section > 1) + return -ERANGE; + + if (mtd->oobsize == 16) { + if (section) + return -ERANGE; + + oobregion->length = 8; + oobregion->offset = 8; + } else { + oobregion->length = 2; + if (!section) + oobregion->offset = 3; + else + oobregion->offset = 6; + } + + return 0; +} + +static const struct mtd_ooblayout_ops nand_ooblayout_sp_ops = { + .ecc = nand_ooblayout_ecc_sp, + .free = nand_ooblayout_free_sp, +}; + +const struct mtd_ooblayout_ops *nand_get_small_page_ooblayout(void) +{ + return &nand_ooblayout_sp_ops; +} +EXPORT_SYMBOL_GPL(nand_get_small_page_ooblayout); + +static int nand_ooblayout_ecc_lp(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_device *nand = mtd_to_nanddev(mtd); + unsigned int total_ecc_bytes = nand->ecc.ctx.total; + + if (section || !total_ecc_bytes) + return -ERANGE; + + oobregion->length = total_ecc_bytes; + oobregion->offset = mtd->oobsize - oobregion->length; + + return 0; +} + +static int nand_ooblayout_free_lp(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_device *nand = mtd_to_nanddev(mtd); + unsigned int total_ecc_bytes = nand->ecc.ctx.total; + + if (section) + return -ERANGE; + + oobregion->length = mtd->oobsize - total_ecc_bytes - 2; + oobregion->offset = 2; + + return 0; +} + +static const struct mtd_ooblayout_ops nand_ooblayout_lp_ops = { + .ecc = nand_ooblayout_ecc_lp, + .free = nand_ooblayout_free_lp, +}; + +const struct mtd_ooblayout_ops *nand_get_large_page_ooblayout(void) +{ + return &nand_ooblayout_lp_ops; +} +EXPORT_SYMBOL_GPL(nand_get_large_page_ooblayout); + +/* + * Support the old "large page" layout used for 1-bit Hamming ECC where ECC + * are placed at a fixed offset. + */ +static int nand_ooblayout_ecc_lp_hamming(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_device *nand = mtd_to_nanddev(mtd); + unsigned int total_ecc_bytes = nand->ecc.ctx.total; + + if (section) + return -ERANGE; + + switch (mtd->oobsize) { + case 64: + oobregion->offset = 40; + break; + case 128: + oobregion->offset = 80; + break; + default: + return -EINVAL; + } + + oobregion->length = total_ecc_bytes; + if (oobregion->offset + oobregion->length > mtd->oobsize) + return -ERANGE; + + return 0; +} + +static int nand_ooblayout_free_lp_hamming(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + struct nand_device *nand = mtd_to_nanddev(mtd); + unsigned int total_ecc_bytes = nand->ecc.ctx.total; + int ecc_offset = 0; + + if (section < 0 || section > 1) + return -ERANGE; + + switch (mtd->oobsize) { + case 64: + ecc_offset = 40; + break; + case 128: + ecc_offset = 80; + break; + default: + return -EINVAL; + } + + if (section == 0) { + oobregion->offset = 2; + oobregion->length = ecc_offset - 2; + } else { + oobregion->offset = ecc_offset + total_ecc_bytes; + oobregion->length = mtd->oobsize - oobregion->offset; + } + + return 0; +} + +static const struct mtd_ooblayout_ops nand_ooblayout_lp_hamming_ops = { + .ecc = nand_ooblayout_ecc_lp_hamming, + .free = nand_ooblayout_free_lp_hamming, +}; + +const struct mtd_ooblayout_ops *nand_get_large_page_hamming_ooblayout(void) +{ + return &nand_ooblayout_lp_hamming_ops; +} +EXPORT_SYMBOL_GPL(nand_get_large_page_hamming_ooblayout); + +static enum nand_ecc_engine_type +of_get_nand_ecc_engine_type(struct device_node *np) +{ + struct device_node *eng_np; + + if (of_property_read_bool(np, "nand-no-ecc-engine")) + return NAND_ECC_ENGINE_TYPE_NONE; + + if (of_property_read_bool(np, "nand-use-soft-ecc-engine")) + return NAND_ECC_ENGINE_TYPE_SOFT; + + eng_np = of_parse_phandle(np, "nand-ecc-engine", 0); + of_node_put(eng_np); + + if (eng_np) { + if (eng_np == np) + return NAND_ECC_ENGINE_TYPE_ON_DIE; + else + return NAND_ECC_ENGINE_TYPE_ON_HOST; + } + + return NAND_ECC_ENGINE_TYPE_INVALID; +} + +static const char * const nand_ecc_placement[] = { + [NAND_ECC_PLACEMENT_OOB] = "oob", + [NAND_ECC_PLACEMENT_INTERLEAVED] = "interleaved", +}; + +static enum nand_ecc_placement of_get_nand_ecc_placement(struct device_node *np) +{ + enum nand_ecc_placement placement; + const char *pm; + int err; + + err = of_property_read_string(np, "nand-ecc-placement", &pm); + if (!err) { + for (placement = NAND_ECC_PLACEMENT_OOB; + placement < ARRAY_SIZE(nand_ecc_placement); placement++) { + if (!strcasecmp(pm, nand_ecc_placement[placement])) + return placement; + } + } + + return NAND_ECC_PLACEMENT_UNKNOWN; +} + +static const char * const nand_ecc_algos[] = { + [NAND_ECC_ALGO_HAMMING] = "hamming", + [NAND_ECC_ALGO_BCH] = "bch", + [NAND_ECC_ALGO_RS] = "rs", +}; + +static enum nand_ecc_algo of_get_nand_ecc_algo(struct device_node *np) +{ + enum nand_ecc_algo ecc_algo; + const char *pm; + int err; + + err = of_property_read_string(np, "nand-ecc-algo", &pm); + if (!err) { + for (ecc_algo = NAND_ECC_ALGO_HAMMING; + ecc_algo < ARRAY_SIZE(nand_ecc_algos); + ecc_algo++) { + if (!strcasecmp(pm, nand_ecc_algos[ecc_algo])) + return ecc_algo; + } + } + + return NAND_ECC_ALGO_UNKNOWN; +} + +static int of_get_nand_ecc_step_size(struct device_node *np) +{ + int ret; + u32 val; + + ret = of_property_read_u32(np, "nand-ecc-step-size", &val); + return ret ? ret : val; +} + +static int of_get_nand_ecc_strength(struct device_node *np) +{ + int ret; + u32 val; + + ret = of_property_read_u32(np, "nand-ecc-strength", &val); + return ret ? ret : val; +} + +void of_get_nand_ecc_user_config(struct nand_device *nand) +{ + struct device_node *dn = nanddev_get_of_node(nand); + int strength, size; + + nand->ecc.user_conf.engine_type = of_get_nand_ecc_engine_type(dn); + nand->ecc.user_conf.algo = of_get_nand_ecc_algo(dn); + nand->ecc.user_conf.placement = of_get_nand_ecc_placement(dn); + + strength = of_get_nand_ecc_strength(dn); + if (strength >= 0) + nand->ecc.user_conf.strength = strength; + + size = of_get_nand_ecc_step_size(dn); + if (size >= 0) + nand->ecc.user_conf.step_size = size; + + if (of_property_read_bool(dn, "nand-ecc-maximize")) + nand->ecc.user_conf.flags |= NAND_ECC_MAXIMIZE_STRENGTH; +} +EXPORT_SYMBOL(of_get_nand_ecc_user_config); + +/** + * nand_ecc_is_strong_enough - Check if the chip configuration meets the + * datasheet requirements. + * + * @nand: Device to check + * + * If our configuration corrects A bits per B bytes and the minimum + * required correction level is X bits per Y bytes, then we must ensure + * both of the following are true: + * + * (1) A / B >= X / Y + * (2) A >= X + * + * Requirement (1) ensures we can correct for the required bitflip density. + * Requirement (2) ensures we can correct even when all bitflips are clumped + * in the same sector. + */ +bool nand_ecc_is_strong_enough(struct nand_device *nand) +{ + const struct nand_ecc_props *reqs = nanddev_get_ecc_requirements(nand); + const struct nand_ecc_props *conf = nanddev_get_ecc_conf(nand); + struct mtd_info *mtd = nanddev_to_mtd(nand); + int corr, ds_corr; + + if (conf->step_size == 0 || reqs->step_size == 0) + /* Not enough information */ + return true; + + /* + * We get the number of corrected bits per page to compare + * the correction density. + */ + corr = (mtd->writesize * conf->strength) / conf->step_size; + ds_corr = (mtd->writesize * reqs->strength) / reqs->step_size; + + return corr >= ds_corr && conf->strength >= reqs->strength; +} +EXPORT_SYMBOL(nand_ecc_is_strong_enough); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Miquel Raynal "); +MODULE_DESCRIPTION("Generic ECC engine"); diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index e754a6fc8a4b..8cf5bdbea782 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -127,6 +127,40 @@ struct nand_page_io_req { int mode; }; +const struct mtd_ooblayout_ops *nand_get_small_page_ooblayout(void); +const struct mtd_ooblayout_ops *nand_get_large_page_ooblayout(void); +const struct mtd_ooblayout_ops *nand_get_large_page_hamming_ooblayout(void); + +/** + * enum nand_ecc_engine_type - NAND ECC engine type + * @NAND_ECC_ENGINE_TYPE_INVALID: Invalid value + * @NAND_ECC_ENGINE_TYPE_NONE: No ECC correction + * @NAND_ECC_ENGINE_TYPE_SOFT: Software ECC correction + * @NAND_ECC_ENGINE_TYPE_ON_HOST: On host hardware ECC correction + * @NAND_ECC_ENGINE_TYPE_ON_DIE: On chip hardware ECC correction + */ +enum nand_ecc_engine_type { + NAND_ECC_ENGINE_TYPE_INVALID, + NAND_ECC_ENGINE_TYPE_NONE, + NAND_ECC_ENGINE_TYPE_SOFT, + NAND_ECC_ENGINE_TYPE_ON_HOST, + NAND_ECC_ENGINE_TYPE_ON_DIE, +}; + +/** + * enum nand_ecc_placement - NAND ECC bytes placement + * @NAND_ECC_PLACEMENT_UNKNOWN: The actual position of the ECC bytes is unknown + * @NAND_ECC_PLACEMENT_OOB: The ECC bytes are located in the OOB area + * @NAND_ECC_PLACEMENT_INTERLEAVED: Syndrome layout, there are ECC bytes + * interleaved with regular data in the main + * area + */ +enum nand_ecc_placement { + NAND_ECC_PLACEMENT_UNKNOWN, + NAND_ECC_PLACEMENT_OOB, + NAND_ECC_PLACEMENT_INTERLEAVED, +}; + /** * enum nand_ecc_algo - NAND ECC algorithm * @NAND_ECC_ALGO_UNKNOWN: Unknown algorithm @@ -143,16 +177,27 @@ enum nand_ecc_algo { /** * struct nand_ecc_props - NAND ECC properties + * @engine_type: ECC engine type + * @placement: OOB placement (if relevant) + * @algo: ECC algorithm (if relevant) * @strength: ECC strength * @step_size: Number of bytes per step + * @flags: Misc properties */ struct nand_ecc_props { + enum nand_ecc_engine_type engine_type; + enum nand_ecc_placement placement; + enum nand_ecc_algo algo; unsigned int strength; unsigned int step_size; + unsigned int flags; }; #define NAND_ECCREQ(str, stp) { .strength = (str), .step_size = (stp) } +/* NAND ECC misc flags */ +#define NAND_ECC_MAXIMIZE_STRENGTH BIT(0) + /** * struct nand_bbt - bad block table object * @cache: in memory BBT cache @@ -183,6 +228,75 @@ struct nand_ops { bool (*isbad)(struct nand_device *nand, const struct nand_pos *pos); }; +/** + * struct nand_ecc_context - Context for the ECC engine + * @conf: basic ECC engine parameters + * @total: total number of bytes used for storing ECC codes, this is used by + * generic OOB layouts + * @priv: ECC engine driver private data + */ +struct nand_ecc_context { + struct nand_ecc_props conf; + unsigned int total; + void *priv; +}; + +/** + * struct nand_ecc_engine_ops - ECC engine operations + * @init_ctx: given a desired user configuration for the pointed NAND device, + * requests the ECC engine driver to setup a configuration with + * values it supports. + * @cleanup_ctx: clean the context initialized by @init_ctx. + * @prepare_io_req: is called before reading/writing a page to prepare the I/O + * request to be performed with ECC correction. + * @finish_io_req: is called after reading/writing a page to terminate the I/O + * request and ensure proper ECC correction. + */ +struct nand_ecc_engine_ops { + int (*init_ctx)(struct nand_device *nand); + void (*cleanup_ctx)(struct nand_device *nand); + int (*prepare_io_req)(struct nand_device *nand, + struct nand_page_io_req *req); + int (*finish_io_req)(struct nand_device *nand, + struct nand_page_io_req *req); +}; + +/** + * struct nand_ecc_engine - ECC engine abstraction for NAND devices + * @ops: ECC engine operations + */ +struct nand_ecc_engine { + struct nand_ecc_engine_ops *ops; +}; + +void of_get_nand_ecc_user_config(struct nand_device *nand); +int nand_ecc_init_ctx(struct nand_device *nand); +void nand_ecc_cleanup_ctx(struct nand_device *nand); +int nand_ecc_prepare_io_req(struct nand_device *nand, + struct nand_page_io_req *req); +int nand_ecc_finish_io_req(struct nand_device *nand, + struct nand_page_io_req *req); +bool nand_ecc_is_strong_enough(struct nand_device *nand); + +/** + * struct nand_ecc - Information relative to the ECC + * @defaults: Default values, depend on the underlying subsystem + * @requirements: ECC requirements from the NAND chip perspective + * @user_conf: User desires in terms of ECC parameters + * @ctx: ECC context for the ECC engine, derived from the device @requirements + * the @user_conf and the @defaults + * @ondie_engine: On-die ECC engine reference, if any + * @engine: ECC engine actually bound + */ +struct nand_ecc { + struct nand_ecc_props defaults; + struct nand_ecc_props requirements; + struct nand_ecc_props user_conf; + struct nand_ecc_context ctx; + struct nand_ecc_engine *ondie_engine; + struct nand_ecc_engine *engine; +}; + /** * struct nand_device - NAND device * @mtd: MTD instance attached to the NAND device From ef24f97daac4d9450c956ab165d8337c2feca0e9 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:57 +0200 Subject: [PATCH 09/49] mtd: rawnand: Separate the ECC engine type and the ECC byte placement The use of "syndrome" placement should not be encoded in the ECC engine mode/type. Create a "placement" field in NAND chip and change all occurrences of the NAND_ECC_HW_SYNDROME enumeration to be just NAND_ECC_HW and possibly a placement entry like NAND_ECC_PLACEMENT_INTERLEAVED. Signed-off-by: Miquel Raynal Reviewed-by: Boris Brezillon Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-10-miquel.raynal@bootlin.com --- arch/arm/mach-davinci/board-dm355-leopard.c | 3 +- drivers/mtd/nand/raw/cafe_nand.c | 3 +- drivers/mtd/nand/raw/davinci_nand.c | 5 +- drivers/mtd/nand/raw/denali.c | 3 +- drivers/mtd/nand/raw/diskonchip.c | 3 +- drivers/mtd/nand/raw/lpc32xx_slc.c | 3 +- drivers/mtd/nand/raw/nand_base.c | 89 ++++++++++++--------- drivers/mtd/nand/raw/r852.c | 3 +- include/linux/mtd/rawnand.h | 6 +- include/linux/platform_data/mtd-davinci.h | 1 + 10 files changed, 71 insertions(+), 48 deletions(-) diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c index b9e9950dd300..4c8a592754ac 100644 --- a/arch/arm/mach-davinci/board-dm355-leopard.c +++ b/arch/arm/mach-davinci/board-dm355-leopard.c @@ -76,7 +76,8 @@ static struct davinci_nand_pdata davinci_nand_data = { .mask_chipsel = BIT(14), .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), - .ecc_mode = NAND_ECC_HW_SYNDROME, + .ecc_mode = NAND_HW_ECC_ENGINE, + .ecc_placement = NAND_ECC_PLACEMENT_INTERLEAVED, .ecc_bits = 4, .bbt_options = NAND_BBT_USE_FLASH, }; diff --git a/drivers/mtd/nand/raw/cafe_nand.c b/drivers/mtd/nand/raw/cafe_nand.c index 92173790f20b..2bf8ab542e38 100644 --- a/drivers/mtd/nand/raw/cafe_nand.c +++ b/drivers/mtd/nand/raw/cafe_nand.c @@ -629,7 +629,8 @@ static int cafe_nand_attach_chip(struct nand_chip *chip) goto out_free_dma; } - cafe->nand.ecc.mode = NAND_ECC_HW_SYNDROME; + cafe->nand.ecc.mode = NAND_ECC_HW; + cafe->nand.ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; cafe->nand.ecc.size = mtd->writesize; cafe->nand.ecc.bytes = 14; cafe->nand.ecc.strength = 4; diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c index 551515c223bb..3640c7e45e15 100644 --- a/drivers/mtd/nand/raw/davinci_nand.c +++ b/drivers/mtd/nand/raw/davinci_nand.c @@ -168,7 +168,7 @@ static int nand_davinci_correct_1bit(struct nand_chip *chip, u_char *dat, /* * 4-bit hardware ECC ... context maintained over entire AEMIF * - * This is a syndrome engine, but we avoid NAND_ECC_HW_SYNDROME + * This is a syndrome engine, but we avoid NAND_ECC_PLACEMENT_INTERLEAVED * since that forces use of a problematic "infix OOB" layout. * Among other things, it trashes manufacturer bad block markers. * Also, and specific to this hardware, it ECC-protects the "prepad" @@ -851,6 +851,7 @@ static int nand_davinci_probe(struct platform_device *pdev) /* Use board-specific ECC config */ info->chip.ecc.mode = pdata->ecc_mode; + info->chip.ecc.placement = pdata->ecc_placement; spin_lock_irq(&davinci_nand_lock); @@ -897,7 +898,7 @@ static int nand_davinci_remove(struct platform_device *pdev) int ret; spin_lock_irq(&davinci_nand_lock); - if (info->chip.ecc.mode == NAND_ECC_HW_SYNDROME) + if (info->chip.ecc.placement == NAND_ECC_PLACEMENT_INTERLEAVED) ecc4_busy = false; spin_unlock_irq(&davinci_nand_lock); diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c index 9d99dade95ce..0e54b8a61cf0 100644 --- a/drivers/mtd/nand/raw/denali.c +++ b/drivers/mtd/nand/raw/denali.c @@ -1237,7 +1237,8 @@ int denali_chip_init(struct denali_controller *denali, chip->bbt_options |= NAND_BBT_USE_FLASH; chip->bbt_options |= NAND_BBT_NO_OOB; chip->options |= NAND_NO_SUBPAGE_WRITE; - chip->ecc.mode = NAND_ECC_HW_SYNDROME; + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; chip->ecc.read_page = denali_read_page; chip->ecc.write_page = denali_write_page; chip->ecc.read_page_raw = denali_read_page_raw; diff --git a/drivers/mtd/nand/raw/diskonchip.c b/drivers/mtd/nand/raw/diskonchip.c index 43721863a0d8..40360352136b 100644 --- a/drivers/mtd/nand/raw/diskonchip.c +++ b/drivers/mtd/nand/raw/diskonchip.c @@ -1456,7 +1456,8 @@ static int __init doc_probe(unsigned long physadr) nand->ecc.calculate = doc200x_calculate_ecc; nand->ecc.correct = doc200x_correct_data; - nand->ecc.mode = NAND_ECC_HW_SYNDROME; + nand->ecc.mode = NAND_ECC_HW; + nand->ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; nand->ecc.size = 512; nand->ecc.bytes = 6; nand->ecc.strength = 2; diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index b151fd000815..ccb189c8e343 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -881,7 +881,8 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) platform_set_drvdata(pdev, host); /* NAND callbacks for LPC32xx SLC hardware */ - chip->ecc.mode = NAND_ECC_HW_SYNDROME; + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; chip->legacy.read_byte = lpc32xx_nand_read_byte; chip->legacy.read_buf = lpc32xx_nand_read_buf; chip->legacy.write_buf = lpc32xx_nand_write_buf; diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index e22a7f9986b1..172852a29a50 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5790,47 +5790,59 @@ static int nand_scan_tail(struct nand_chip *chip) switch (ecc->mode) { case NAND_ECC_HW: - /* Use standard hwecc read page function? */ - if (!ecc->read_page) - ecc->read_page = nand_read_page_hwecc; - if (!ecc->write_page) - ecc->write_page = nand_write_page_hwecc; - if (!ecc->read_page_raw) - ecc->read_page_raw = nand_read_page_raw; - if (!ecc->write_page_raw) - ecc->write_page_raw = nand_write_page_raw; - if (!ecc->read_oob) - ecc->read_oob = nand_read_oob_std; - if (!ecc->write_oob) - ecc->write_oob = nand_write_oob_std; - if (!ecc->read_subpage) - ecc->read_subpage = nand_read_subpage; - if (!ecc->write_subpage && ecc->hwctl && ecc->calculate) - ecc->write_subpage = nand_write_subpage_hwecc; - fallthrough; - case NAND_ECC_HW_SYNDROME: - if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) && - (!ecc->read_page || - ecc->read_page == nand_read_page_hwecc || - !ecc->write_page || - ecc->write_page == nand_write_page_hwecc)) { - WARN(1, "No ECC functions supplied; hardware ECC not possible\n"); + switch (ecc->placement) { + case NAND_ECC_PLACEMENT_UNKNOWN: + case NAND_ECC_PLACEMENT_OOB: + /* Use standard hwecc read page function? */ + if (!ecc->read_page) + ecc->read_page = nand_read_page_hwecc; + if (!ecc->write_page) + ecc->write_page = nand_write_page_hwecc; + if (!ecc->read_page_raw) + ecc->read_page_raw = nand_read_page_raw; + if (!ecc->write_page_raw) + ecc->write_page_raw = nand_write_page_raw; + if (!ecc->read_oob) + ecc->read_oob = nand_read_oob_std; + if (!ecc->write_oob) + ecc->write_oob = nand_write_oob_std; + if (!ecc->read_subpage) + ecc->read_subpage = nand_read_subpage; + if (!ecc->write_subpage && ecc->hwctl && ecc->calculate) + ecc->write_subpage = nand_write_subpage_hwecc; + fallthrough; + + case NAND_ECC_PLACEMENT_INTERLEAVED: + if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) && + (!ecc->read_page || + ecc->read_page == nand_read_page_hwecc || + !ecc->write_page || + ecc->write_page == nand_write_page_hwecc)) { + WARN(1, "No ECC functions supplied; hardware ECC not possible\n"); + ret = -EINVAL; + goto err_nand_manuf_cleanup; + } + /* Use standard syndrome read/write page function? */ + if (!ecc->read_page) + ecc->read_page = nand_read_page_syndrome; + if (!ecc->write_page) + ecc->write_page = nand_write_page_syndrome; + if (!ecc->read_page_raw) + ecc->read_page_raw = nand_read_page_raw_syndrome; + if (!ecc->write_page_raw) + ecc->write_page_raw = nand_write_page_raw_syndrome; + if (!ecc->read_oob) + ecc->read_oob = nand_read_oob_syndrome; + if (!ecc->write_oob) + ecc->write_oob = nand_write_oob_syndrome; + break; + + default: + pr_warn("Invalid NAND_ECC_PLACEMENT %d\n", + ecc->placement); ret = -EINVAL; goto err_nand_manuf_cleanup; } - /* Use standard syndrome read/write page function? */ - if (!ecc->read_page) - ecc->read_page = nand_read_page_syndrome; - if (!ecc->write_page) - ecc->write_page = nand_write_page_syndrome; - if (!ecc->read_page_raw) - ecc->read_page_raw = nand_read_page_raw_syndrome; - if (!ecc->write_page_raw) - ecc->write_page_raw = nand_write_page_raw_syndrome; - if (!ecc->read_oob) - ecc->read_oob = nand_read_oob_syndrome; - if (!ecc->write_oob) - ecc->write_oob = nand_write_oob_syndrome; if (mtd->writesize >= ecc->size) { if (!ecc->strength) { @@ -5845,6 +5857,7 @@ static int nand_scan_tail(struct nand_chip *chip) ecc->mode = NAND_ECC_SOFT; ecc->algo = NAND_ECC_ALGO_HAMMING; fallthrough; + case NAND_ECC_SOFT: ret = nand_set_ecc_soft_ops(chip); if (ret) { diff --git a/drivers/mtd/nand/raw/r852.c b/drivers/mtd/nand/raw/r852.c index f865e3a47b01..f0988cda4479 100644 --- a/drivers/mtd/nand/raw/r852.c +++ b/drivers/mtd/nand/raw/r852.c @@ -859,7 +859,8 @@ static int r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id) chip->legacy.write_buf = r852_write_buf; /* ecc */ - chip->ecc.mode = NAND_ECC_HW_SYNDROME; + chip->ecc.mode = NAND_ECC_HW; + chip->ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; chip->ecc.size = R852_DMA_LEN; chip->ecc.bytes = SM_OOB_SIZE; chip->ecc.strength = 2; diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 10bbfbf4ad7f..cfd75a12f802 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -304,6 +304,7 @@ static const struct nand_ecc_caps __name = { \ /** * struct nand_ecc_ctrl - Control structure for ECC * @mode: ECC mode + * @placement: OOB bytes placement * @algo: ECC algorithm * @steps: number of ECC steps per page * @size: data bytes per ECC step @@ -331,7 +332,7 @@ static const struct nand_ecc_caps __name = { \ * controller and always return contiguous in-band and * out-of-band data even if they're not stored * contiguously on the NAND chip (e.g. - * NAND_ECC_HW_SYNDROME interleaves in-band and + * NAND_ECC_PLACEMENT_INTERLEAVED interleaves in-band and * out-of-band data). * @write_page_raw: function to write a raw page without ECC. This function * should hide the specific layout used by the ECC @@ -339,7 +340,7 @@ static const struct nand_ecc_caps __name = { \ * in-band and out-of-band data. ECC controller is * responsible for doing the appropriate transformations * to adapt to its specific layout (e.g. - * NAND_ECC_HW_SYNDROME interleaves in-band and + * NAND_ECC_PLACEMENT_INTERLEAVED interleaves in-band and * out-of-band data). * @read_page: function to read a page according to the ECC generator * requirements; returns maximum number of bitflips corrected in @@ -356,6 +357,7 @@ static const struct nand_ecc_caps __name = { \ */ struct nand_ecc_ctrl { enum nand_ecc_mode mode; + enum nand_ecc_placement placement; enum nand_ecc_algo algo; int steps; int size; diff --git a/include/linux/platform_data/mtd-davinci.h b/include/linux/platform_data/mtd-davinci.h index 03e92c71b3fa..6e2b252a4ce6 100644 --- a/include/linux/platform_data/mtd-davinci.h +++ b/include/linux/platform_data/mtd-davinci.h @@ -69,6 +69,7 @@ struct davinci_nand_pdata { /* platform_data */ * using it with large page chips. */ enum nand_ecc_mode ecc_mode; + enum nand_ecc_placement ecc_placement; u8 ecc_bits; /* e.g. NAND_BUSWIDTH_16 */ From bace41f80f65dc4ba13c892bac783e7e81847379 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:58 +0200 Subject: [PATCH 10/49] mtd: rawnand: Use the new ECC engine type enumeration Mechanical switch from the legacy "mode" enumeration to the new "engine type" enumeration in drivers and board files. The device tree parsing is also updated to return the new enumeration from the old strings. Signed-off-by: Miquel Raynal Reviewed-by: Boris Brezillon Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-11-miquel.raynal@bootlin.com --- arch/arm/mach-davinci/board-da830-evm.c | 2 +- arch/arm/mach-davinci/board-da850-evm.c | 2 +- arch/arm/mach-davinci/board-dm355-evm.c | 2 +- arch/arm/mach-davinci/board-dm355-leopard.c | 2 +- arch/arm/mach-davinci/board-dm365-evm.c | 2 +- arch/arm/mach-davinci/board-dm644x-evm.c | 2 +- arch/arm/mach-davinci/board-dm646x-evm.c | 2 +- arch/arm/mach-davinci/board-mityomapl138.c | 2 +- arch/arm/mach-davinci/board-neuros-osd2.c | 2 +- arch/arm/mach-davinci/board-omapl138-hawk.c | 2 +- arch/arm/mach-s3c24xx/common-smdk.c | 2 +- arch/arm/mach-s3c24xx/mach-anubis.c | 2 +- arch/arm/mach-s3c24xx/mach-at2440evb.c | 2 +- arch/arm/mach-s3c24xx/mach-bast.c | 2 +- arch/arm/mach-s3c24xx/mach-gta02.c | 2 +- arch/arm/mach-s3c24xx/mach-jive.c | 2 +- arch/arm/mach-s3c24xx/mach-mini2440.c | 2 +- arch/arm/mach-s3c24xx/mach-osiris.c | 2 +- arch/arm/mach-s3c24xx/mach-qt2410.c | 2 +- arch/arm/mach-s3c24xx/mach-rx1950.c | 2 +- arch/arm/mach-s3c24xx/mach-rx3715.c | 2 +- arch/arm/mach-s3c24xx/mach-vstms.c | 2 +- arch/arm/mach-s3c64xx/mach-hmt.c | 2 +- arch/arm/mach-s3c64xx/mach-mini6410.c | 2 +- arch/arm/mach-s3c64xx/mach-real6410.c | 2 +- drivers/mtd/nand/raw/ams-delta.c | 2 +- drivers/mtd/nand/raw/arasan-nand-controller.c | 12 +-- drivers/mtd/nand/raw/atmel/nand-controller.c | 14 ++-- drivers/mtd/nand/raw/au1550nd.c | 2 +- .../mtd/nand/raw/bcm47xxnflash/ops_bcm4706.c | 3 +- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 8 +- .../mtd/nand/raw/cadence-nand-controller.c | 4 +- drivers/mtd/nand/raw/cafe_nand.c | 2 +- drivers/mtd/nand/raw/cs553x_nand.c | 2 +- drivers/mtd/nand/raw/davinci_nand.c | 24 +++--- drivers/mtd/nand/raw/denali.c | 2 +- drivers/mtd/nand/raw/diskonchip.c | 2 +- drivers/mtd/nand/raw/fsl_elbc_nand.c | 18 ++--- drivers/mtd/nand/raw/fsl_ifc_nand.c | 10 +-- drivers/mtd/nand/raw/fsl_upm.c | 2 +- drivers/mtd/nand/raw/fsmc_nand.c | 12 +-- drivers/mtd/nand/raw/gpio.c | 2 +- drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 2 +- drivers/mtd/nand/raw/hisi504_nand.c | 6 +- .../mtd/nand/raw/ingenic/ingenic_nand_drv.c | 14 ++-- drivers/mtd/nand/raw/lpc32xx_mlc.c | 2 +- drivers/mtd/nand/raw/lpc32xx_slc.c | 2 +- drivers/mtd/nand/raw/marvell_nand.c | 17 ++-- drivers/mtd/nand/raw/meson_nand.c | 2 +- drivers/mtd/nand/raw/mpc5121_nfc.c | 2 +- drivers/mtd/nand/raw/mtk_nand.c | 6 +- drivers/mtd/nand/raw/mxc_nand.c | 23 +++--- drivers/mtd/nand/raw/nand_base.c | 78 ++++++++++++------- drivers/mtd/nand/raw/nand_micron.c | 4 +- drivers/mtd/nand/raw/nand_toshiba.c | 3 +- drivers/mtd/nand/raw/nandsim.c | 4 +- drivers/mtd/nand/raw/ndfc.c | 2 +- drivers/mtd/nand/raw/omap2.c | 20 ++--- drivers/mtd/nand/raw/orion_nand.c | 2 +- drivers/mtd/nand/raw/pasemi_nand.c | 2 +- drivers/mtd/nand/raw/plat_nand.c | 2 +- drivers/mtd/nand/raw/qcom_nandc.c | 2 +- drivers/mtd/nand/raw/r852.c | 2 +- drivers/mtd/nand/raw/s3c2410.c | 18 ++--- drivers/mtd/nand/raw/sh_flctl.c | 4 +- drivers/mtd/nand/raw/sharpsl.c | 2 +- drivers/mtd/nand/raw/socrates_nand.c | 3 +- drivers/mtd/nand/raw/stm32_fmc2_nand.c | 9 ++- drivers/mtd/nand/raw/sunxi_nand.c | 18 ++--- drivers/mtd/nand/raw/tango_nand.c | 2 +- drivers/mtd/nand/raw/tegra_nand.c | 2 +- drivers/mtd/nand/raw/tmio_nand.c | 2 +- drivers/mtd/nand/raw/txx9ndfmc.c | 2 +- drivers/mtd/nand/raw/vf610_nfc.c | 4 +- drivers/mtd/nand/raw/xway_nand.c | 2 +- include/linux/mtd/rawnand.h | 4 +- include/linux/platform_data/mtd-davinci.h | 8 +- .../linux/platform_data/mtd-nand-s3c2410.h | 2 +- 78 files changed, 238 insertions(+), 212 deletions(-) diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index 1076886938b6..a20ba12d876c 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -306,7 +306,7 @@ static struct davinci_nand_pdata da830_evm_nand_pdata = { .core_chipsel = 1, .parts = da830_evm_nand_partitions, .nr_parts = ARRAY_SIZE(da830_evm_nand_partitions), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .ecc_bits = 4, .bbt_options = NAND_BBT_USE_FLASH, .bbt_td = &da830_evm_nand_bbt_main_descr, diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c index 6751292e5f8f..428012687a80 100644 --- a/arch/arm/mach-davinci/board-da850-evm.c +++ b/arch/arm/mach-davinci/board-da850-evm.c @@ -239,7 +239,7 @@ static struct davinci_nand_pdata da850_evm_nandflash_data = { .core_chipsel = 1, .parts = da850_evm_nandflash_partition, .nr_parts = ARRAY_SIZE(da850_evm_nandflash_partition), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .ecc_bits = 4, .bbt_options = NAND_BBT_USE_FLASH, .timing = &da850_evm_nandflash_timing, diff --git a/arch/arm/mach-davinci/board-dm355-evm.c b/arch/arm/mach-davinci/board-dm355-evm.c index 5113273fda69..3c5a9e3c128a 100644 --- a/arch/arm/mach-davinci/board-dm355-evm.c +++ b/arch/arm/mach-davinci/board-dm355-evm.c @@ -82,7 +82,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .mask_chipsel = BIT(14), .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .bbt_options = NAND_BBT_USE_FLASH, .ecc_bits = 4, }; diff --git a/arch/arm/mach-davinci/board-dm355-leopard.c b/arch/arm/mach-davinci/board-dm355-leopard.c index 4c8a592754ac..e475b2113e70 100644 --- a/arch/arm/mach-davinci/board-dm355-leopard.c +++ b/arch/arm/mach-davinci/board-dm355-leopard.c @@ -76,7 +76,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .mask_chipsel = BIT(14), .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), - .ecc_mode = NAND_HW_ECC_ENGINE, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .ecc_placement = NAND_ECC_PLACEMENT_INTERLEAVED, .ecc_bits = 4, .bbt_options = NAND_BBT_USE_FLASH, diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c index 2328b15ac067..bdf31eb77620 100644 --- a/arch/arm/mach-davinci/board-dm365-evm.c +++ b/arch/arm/mach-davinci/board-dm365-evm.c @@ -146,7 +146,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .mask_chipsel = BIT(14), .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .bbt_options = NAND_BBT_USE_FLASH, .ecc_bits = 4, }; diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c index a5d3708fedf6..bcb3c4070945 100644 --- a/arch/arm/mach-davinci/board-dm644x-evm.c +++ b/arch/arm/mach-davinci/board-dm644x-evm.c @@ -162,7 +162,7 @@ static struct davinci_nand_pdata davinci_evm_nandflash_data = { .core_chipsel = 0, .parts = davinci_evm_nandflash_partition, .nr_parts = ARRAY_SIZE(davinci_evm_nandflash_partition), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .ecc_bits = 1, .bbt_options = NAND_BBT_USE_FLASH, .timing = &davinci_evm_nandflash_timing, diff --git a/arch/arm/mach-davinci/board-dm646x-evm.c b/arch/arm/mach-davinci/board-dm646x-evm.c index dd7d60f4139a..8319a6067a68 100644 --- a/arch/arm/mach-davinci/board-dm646x-evm.c +++ b/arch/arm/mach-davinci/board-dm646x-evm.c @@ -91,7 +91,7 @@ static struct davinci_nand_pdata davinci_nand_data = { .mask_ale = 0x40000, .parts = davinci_nand_partitions, .nr_parts = ARRAY_SIZE(davinci_nand_partitions), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .ecc_bits = 1, .options = 0, }; diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c index 3382b93d9a2a..5205008c8061 100644 --- a/arch/arm/mach-davinci/board-mityomapl138.c +++ b/arch/arm/mach-davinci/board-mityomapl138.c @@ -432,7 +432,7 @@ static struct davinci_nand_pdata mityomapl138_nandflash_data = { .core_chipsel = 1, .parts = mityomapl138_nandflash_partition, .nr_parts = ARRAY_SIZE(mityomapl138_nandflash_partition), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .bbt_options = NAND_BBT_USE_FLASH, .options = NAND_BUSWIDTH_16, .ecc_bits = 1, /* 4 bit mode is not supported with 16 bit NAND */ diff --git a/arch/arm/mach-davinci/board-neuros-osd2.c b/arch/arm/mach-davinci/board-neuros-osd2.c index 6cf46bbc7e1d..b4843f68bb57 100644 --- a/arch/arm/mach-davinci/board-neuros-osd2.c +++ b/arch/arm/mach-davinci/board-neuros-osd2.c @@ -90,7 +90,7 @@ static struct davinci_nand_pdata davinci_ntosd2_nandflash_data = { .core_chipsel = 0, .parts = davinci_ntosd2_nandflash_partition, .nr_parts = ARRAY_SIZE(davinci_ntosd2_nandflash_partition), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .ecc_bits = 1, .bbt_options = NAND_BBT_USE_FLASH, }; diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c index 6c79039002c9..88df8011a4e6 100644 --- a/arch/arm/mach-davinci/board-omapl138-hawk.c +++ b/arch/arm/mach-davinci/board-omapl138-hawk.c @@ -206,7 +206,7 @@ static struct davinci_nand_pdata omapl138_hawk_nandflash_data = { .core_chipsel = 1, .parts = omapl138_hawk_nandflash_partition, .nr_parts = ARRAY_SIZE(omapl138_hawk_nandflash_partition), - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, .ecc_bits = 4, .bbt_options = NAND_BBT_USE_FLASH, .options = NAND_BUSWIDTH_16, diff --git a/arch/arm/mach-s3c24xx/common-smdk.c b/arch/arm/mach-s3c24xx/common-smdk.c index 75064dfaceb1..121646ad1bb1 100644 --- a/arch/arm/mach-s3c24xx/common-smdk.c +++ b/arch/arm/mach-s3c24xx/common-smdk.c @@ -191,7 +191,7 @@ static struct s3c2410_platform_nand smdk_nand_info = { .twrph1 = 20, .nr_sets = ARRAY_SIZE(smdk_nand_sets), .sets = smdk_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; /* devices we initialise */ diff --git a/arch/arm/mach-s3c24xx/mach-anubis.c b/arch/arm/mach-s3c24xx/mach-anubis.c index 072966dcad78..28326241e360 100644 --- a/arch/arm/mach-s3c24xx/mach-anubis.c +++ b/arch/arm/mach-s3c24xx/mach-anubis.c @@ -218,7 +218,7 @@ static struct s3c2410_platform_nand __initdata anubis_nand_info = { .nr_sets = ARRAY_SIZE(anubis_nand_sets), .sets = anubis_nand_sets, .select_chip = anubis_nand_select, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; /* IDE channels */ diff --git a/arch/arm/mach-s3c24xx/mach-at2440evb.c b/arch/arm/mach-s3c24xx/mach-at2440evb.c index 58c5ef3cf1d7..04dedebdb57c 100644 --- a/arch/arm/mach-s3c24xx/mach-at2440evb.c +++ b/arch/arm/mach-s3c24xx/mach-at2440evb.c @@ -109,7 +109,7 @@ static struct s3c2410_platform_nand __initdata at2440evb_nand_info = { .twrph1 = 40, .nr_sets = ARRAY_SIZE(at2440evb_nand_sets), .sets = at2440evb_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; /* DM9000AEP 10/100 ethernet controller */ diff --git a/arch/arm/mach-s3c24xx/mach-bast.c b/arch/arm/mach-s3c24xx/mach-bast.c index a7c3955ae8f6..6465eab0ab3a 100644 --- a/arch/arm/mach-s3c24xx/mach-bast.c +++ b/arch/arm/mach-s3c24xx/mach-bast.c @@ -294,7 +294,7 @@ static struct s3c2410_platform_nand __initdata bast_nand_info = { .nr_sets = ARRAY_SIZE(bast_nand_sets), .sets = bast_nand_sets, .select_chip = bast_nand_select, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; /* DM9000 */ diff --git a/arch/arm/mach-s3c24xx/mach-gta02.c b/arch/arm/mach-s3c24xx/mach-gta02.c index 594901f3b8e5..db1b64f6e0a5 100644 --- a/arch/arm/mach-s3c24xx/mach-gta02.c +++ b/arch/arm/mach-s3c24xx/mach-gta02.c @@ -416,7 +416,7 @@ static struct s3c2410_platform_nand __initdata gta02_nand_info = { .twrph1 = 15, .nr_sets = ARRAY_SIZE(gta02_nand_sets), .sets = gta02_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; diff --git a/arch/arm/mach-s3c24xx/mach-jive.c b/arch/arm/mach-s3c24xx/mach-jive.c index 885e8f12e4b9..8233dcff19e7 100644 --- a/arch/arm/mach-s3c24xx/mach-jive.c +++ b/arch/arm/mach-s3c24xx/mach-jive.c @@ -228,7 +228,7 @@ static struct s3c2410_platform_nand __initdata jive_nand_info = { .twrph1 = 40, .sets = jive_nand_sets, .nr_sets = ARRAY_SIZE(jive_nand_sets), - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; static int __init jive_mtdset(char *options) diff --git a/arch/arm/mach-s3c24xx/mach-mini2440.c b/arch/arm/mach-s3c24xx/mach-mini2440.c index 235749448311..057dcbaf1b22 100644 --- a/arch/arm/mach-s3c24xx/mach-mini2440.c +++ b/arch/arm/mach-s3c24xx/mach-mini2440.c @@ -296,7 +296,7 @@ static struct s3c2410_platform_nand mini2440_nand_info __initdata = { .nr_sets = ARRAY_SIZE(mini2440_nand_sets), .sets = mini2440_nand_sets, .ignore_unset_ecc = 1, - .ecc_mode = NAND_ECC_HW, + .engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST, }; /* DM9000AEP 10/100 ethernet controller */ diff --git a/arch/arm/mach-s3c24xx/mach-osiris.c b/arch/arm/mach-s3c24xx/mach-osiris.c index ee3630cb236a..157448827f61 100644 --- a/arch/arm/mach-s3c24xx/mach-osiris.c +++ b/arch/arm/mach-s3c24xx/mach-osiris.c @@ -234,7 +234,7 @@ static struct s3c2410_platform_nand __initdata osiris_nand_info = { .nr_sets = ARRAY_SIZE(osiris_nand_sets), .sets = osiris_nand_sets, .select_chip = osiris_nand_select, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; /* PCMCIA control and configuration */ diff --git a/arch/arm/mach-s3c24xx/mach-qt2410.c b/arch/arm/mach-s3c24xx/mach-qt2410.c index ff9e3197309b..f3131d94e90b 100644 --- a/arch/arm/mach-s3c24xx/mach-qt2410.c +++ b/arch/arm/mach-s3c24xx/mach-qt2410.c @@ -287,7 +287,7 @@ static struct s3c2410_platform_nand __initdata qt2410_nand_info = { .twrph1 = 20, .nr_sets = ARRAY_SIZE(qt2410_nand_sets), .sets = qt2410_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; /* UDC */ diff --git a/arch/arm/mach-s3c24xx/mach-rx1950.c b/arch/arm/mach-s3c24xx/mach-rx1950.c index fde98b175c75..5ecb42e8a028 100644 --- a/arch/arm/mach-s3c24xx/mach-rx1950.c +++ b/arch/arm/mach-s3c24xx/mach-rx1950.c @@ -620,7 +620,7 @@ static struct s3c2410_platform_nand rx1950_nand_info = { .twrph1 = 15, .nr_sets = ARRAY_SIZE(rx1950_nand_sets), .sets = rx1950_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; static struct s3c2410_udc_mach_info rx1950_udc_cfg __initdata = { diff --git a/arch/arm/mach-s3c24xx/mach-rx3715.c b/arch/arm/mach-s3c24xx/mach-rx3715.c index 995f1ff34a1b..017010d67e01 100644 --- a/arch/arm/mach-s3c24xx/mach-rx3715.c +++ b/arch/arm/mach-s3c24xx/mach-rx3715.c @@ -158,7 +158,7 @@ static struct s3c2410_platform_nand __initdata rx3715_nand_info = { .twrph1 = 15, .nr_sets = ARRAY_SIZE(rx3715_nand_sets), .sets = rx3715_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; static struct platform_device *rx3715_devices[] __initdata = { diff --git a/arch/arm/mach-s3c24xx/mach-vstms.c b/arch/arm/mach-s3c24xx/mach-vstms.c index d76b28b65e65..c5fa215a527e 100644 --- a/arch/arm/mach-s3c24xx/mach-vstms.c +++ b/arch/arm/mach-s3c24xx/mach-vstms.c @@ -112,7 +112,7 @@ static struct s3c2410_platform_nand __initdata vstms_nand_info = { .twrph1 = 20, .nr_sets = ARRAY_SIZE(vstms_nand_sets), .sets = vstms_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; static struct platform_device *vstms_devices[] __initdata = { diff --git a/arch/arm/mach-s3c64xx/mach-hmt.c b/arch/arm/mach-s3c64xx/mach-hmt.c index e7080215c624..0d9acaf91701 100644 --- a/arch/arm/mach-s3c64xx/mach-hmt.c +++ b/arch/arm/mach-s3c64xx/mach-hmt.c @@ -199,7 +199,7 @@ static struct s3c2410_platform_nand hmt_nand_info = { .twrph1 = 40, .nr_sets = ARRAY_SIZE(hmt_nand_sets), .sets = hmt_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; static struct gpio_led hmt_leds[] = { diff --git a/arch/arm/mach-s3c64xx/mach-mini6410.c b/arch/arm/mach-s3c64xx/mach-mini6410.c index 0dd36ae49e6a..6fbb57878746 100644 --- a/arch/arm/mach-s3c64xx/mach-mini6410.c +++ b/arch/arm/mach-s3c64xx/mach-mini6410.c @@ -136,7 +136,7 @@ static struct s3c2410_platform_nand mini6410_nand_info = { .twrph1 = 40, .nr_sets = ARRAY_SIZE(mini6410_nand_sets), .sets = mini6410_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; static struct s3c_fb_pd_win mini6410_lcd_type0_fb_win = { diff --git a/arch/arm/mach-s3c64xx/mach-real6410.c b/arch/arm/mach-s3c64xx/mach-real6410.c index 0ff88b6859c4..1e98e530a6aa 100644 --- a/arch/arm/mach-s3c64xx/mach-real6410.c +++ b/arch/arm/mach-s3c64xx/mach-real6410.c @@ -188,7 +188,7 @@ static struct s3c2410_platform_nand real6410_nand_info = { .twrph1 = 40, .nr_sets = ARRAY_SIZE(real6410_nand_sets), .sets = real6410_nand_sets, - .ecc_mode = NAND_ECC_SOFT, + .engine_type = NAND_ECC_ENGINE_TYPE_SOFT, }; static struct platform_device *real6410_devices[] __initdata = { diff --git a/drivers/mtd/nand/raw/ams-delta.c b/drivers/mtd/nand/raw/ams-delta.c index 21199d9ae9be..770d4f1001bb 100644 --- a/drivers/mtd/nand/raw/ams-delta.c +++ b/drivers/mtd/nand/raw/ams-delta.c @@ -260,7 +260,7 @@ static int gpio_nand_probe(struct platform_device *pdev) return err; } - this->ecc.mode = NAND_ECC_SOFT; + this->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; this->ecc.algo = NAND_ECC_ALGO_HAMMING; platform_set_drvdata(pdev, priv); diff --git a/drivers/mtd/nand/raw/arasan-nand-controller.c b/drivers/mtd/nand/raw/arasan-nand-controller.c index b0616a95340d..006bc3d3ce20 100644 --- a/drivers/mtd/nand/raw/arasan-nand-controller.c +++ b/drivers/mtd/nand/raw/arasan-nand-controller.c @@ -1056,17 +1056,17 @@ static int anfc_attach_chip(struct nand_chip *chip) chip->ecc.read_page_raw = nand_monolithic_read_page_raw; chip->ecc.write_page_raw = nand_monolithic_write_page_raw; - switch (chip->ecc.mode) { - case NAND_ECC_NONE: - case NAND_ECC_SOFT: - case NAND_ECC_ON_DIE: + switch (chip->ecc.engine_type) { + case NAND_ECC_ENGINE_TYPE_NONE: + case NAND_ECC_ENGINE_TYPE_SOFT: + case NAND_ECC_ENGINE_TYPE_ON_DIE: break; - case NAND_ECC_HW: + case NAND_ECC_ENGINE_TYPE_ON_HOST: ret = anfc_init_hw_ecc_controller(nfc, chip); break; default: dev_err(nfc->dev, "Unsupported ECC mode: %d\n", - chip->ecc.mode); + chip->ecc.engine_type); return -EINVAL; } diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 8999571bfa5d..0d9cd7faf00d 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -1118,15 +1118,15 @@ static int atmel_nand_ecc_init(struct nand_chip *chip) nc = to_nand_controller(chip->controller); - switch (chip->ecc.mode) { - case NAND_ECC_NONE: - case NAND_ECC_SOFT: + switch (chip->ecc.engine_type) { + case NAND_ECC_ENGINE_TYPE_NONE: + case NAND_ECC_ENGINE_TYPE_SOFT: /* * Nothing to do, the core will initialize everything for us. */ break; - case NAND_ECC_HW: + case NAND_ECC_ENGINE_TYPE_ON_HOST: ret = atmel_nand_pmecc_init(chip); if (ret) return ret; @@ -1140,7 +1140,7 @@ static int atmel_nand_ecc_init(struct nand_chip *chip) default: /* Other modes are not supported. */ dev_err(nc->dev, "Unsupported ECC mode: %d\n", - chip->ecc.mode); + chip->ecc.engine_type); return -ENOTSUPP; } @@ -1155,7 +1155,7 @@ static int atmel_hsmc_nand_ecc_init(struct nand_chip *chip) if (ret) return ret; - if (chip->ecc.mode != NAND_ECC_HW) + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) return 0; /* Adjust the ECC operations for the HSMC IP. */ @@ -1498,7 +1498,7 @@ static void atmel_nand_init(struct atmel_nand_controller *nc, /* Default to HW ECC if pmecc is available. */ if (nc->pmecc) - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; } static void atmel_smc_nand_init(struct atmel_nand_controller *nc, diff --git a/drivers/mtd/nand/raw/au1550nd.c b/drivers/mtd/nand/raw/au1550nd.c index ec2d90ad87de..79b057400fe9 100644 --- a/drivers/mtd/nand/raw/au1550nd.c +++ b/drivers/mtd/nand/raw/au1550nd.c @@ -294,7 +294,7 @@ static int au1550nd_probe(struct platform_device *pdev) nand_controller_init(&ctx->controller); ctx->controller.ops = &au1550nd_ops; this->controller = &ctx->controller; - this->ecc.mode = NAND_ECC_SOFT; + this->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; this->ecc.algo = NAND_ECC_ALGO_HAMMING; if (pd->devwidth) diff --git a/drivers/mtd/nand/raw/bcm47xxnflash/ops_bcm4706.c b/drivers/mtd/nand/raw/bcm47xxnflash/ops_bcm4706.c index 591775173034..8bb17c5a66c3 100644 --- a/drivers/mtd/nand/raw/bcm47xxnflash/ops_bcm4706.c +++ b/drivers/mtd/nand/raw/bcm47xxnflash/ops_bcm4706.c @@ -391,7 +391,8 @@ int bcm47xxnflash_ops_bcm4706_init(struct bcm47xxnflash *b47n) nand_chip->legacy.chip_delay = 50; b47n->nand_chip.bbt_options = NAND_BBT_USE_FLASH; - b47n->nand_chip.ecc.mode = NAND_ECC_NONE; /* TODO: implement ECC */ + /* TODO: implement ECC */ + b47n->nand_chip.ecc.engine_type = NAND_ECC_ENGINE_TYPE_NONE; /* Enable NAND flash access */ bcma_cc_set32(b47n->cc, BCMA_CC_4706_FLASHSCFG, diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index 39f1bf327592..afe27a27cb93 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -2565,9 +2565,9 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) cfg->col_adr_bytes = 2; cfg->blk_adr_bytes = get_blk_adr_bytes(mtd->size, mtd->writesize); - if (chip->ecc.mode != NAND_ECC_HW) { + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) { dev_err(ctrl->dev, "only HW ECC supported; selected: %d\n", - chip->ecc.mode); + chip->ecc.engine_type); return -EINVAL; } @@ -2587,7 +2587,7 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) return -EINVAL; } - if (chip->ecc.mode != NAND_ECC_NONE && + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_NONE && (!chip->ecc.size || !chip->ecc.strength)) { if (chip->base.eccreq.step_size && chip->base.eccreq.strength) { /* use detected ECC parameters */ @@ -2728,7 +2728,7 @@ static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn) chip->legacy.read_buf = brcmnand_read_buf; chip->legacy.write_buf = brcmnand_write_buf; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.read_page = brcmnand_read_page; chip->ecc.write_page = brcmnand_write_page; chip->ecc.read_page_raw = brcmnand_read_page_raw; diff --git a/drivers/mtd/nand/raw/cadence-nand-controller.c b/drivers/mtd/nand/raw/cadence-nand-controller.c index 71516af85f23..db29e5e512df 100644 --- a/drivers/mtd/nand/raw/cadence-nand-controller.c +++ b/drivers/mtd/nand/raw/cadence-nand-controller.c @@ -2611,7 +2611,7 @@ static int cadence_nand_attach_chip(struct nand_chip *chip) chip->bbt_options |= NAND_BBT_USE_FLASH; chip->bbt_options |= NAND_BBT_NO_OOB; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->options |= NAND_NO_SUBPAGE_WRITE; @@ -2757,7 +2757,7 @@ static int cadence_nand_chip_init(struct cdns_nand_ctrl *cdns_ctrl, * Default to HW ECC engine mode. If the nand-ecc-mode property is given * in the DT node, this entry will be overwritten in nand_scan_ident(). */ - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; ret = nand_scan(chip, cdns_chip->nsels); if (ret) { diff --git a/drivers/mtd/nand/raw/cafe_nand.c b/drivers/mtd/nand/raw/cafe_nand.c index 2bf8ab542e38..2b94f385a1a8 100644 --- a/drivers/mtd/nand/raw/cafe_nand.c +++ b/drivers/mtd/nand/raw/cafe_nand.c @@ -629,7 +629,7 @@ static int cafe_nand_attach_chip(struct nand_chip *chip) goto out_free_dma; } - cafe->nand.ecc.mode = NAND_ECC_HW; + cafe->nand.ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; cafe->nand.ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; cafe->nand.ecc.size = mtd->writesize; cafe->nand.ecc.bytes = 14; diff --git a/drivers/mtd/nand/raw/cs553x_nand.c b/drivers/mtd/nand/raw/cs553x_nand.c index 9472bf798ed5..b7f3f6347761 100644 --- a/drivers/mtd/nand/raw/cs553x_nand.c +++ b/drivers/mtd/nand/raw/cs553x_nand.c @@ -286,7 +286,7 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr) goto out_mtd; } - this->ecc.mode = NAND_ECC_HW; + this->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; this->ecc.size = 256; this->ecc.bytes = 3; this->ecc.hwctl = cs_enable_hwecc; diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c index 3640c7e45e15..58966a9706b1 100644 --- a/drivers/mtd/nand/raw/davinci_nand.c +++ b/drivers/mtd/nand/raw/davinci_nand.c @@ -530,11 +530,11 @@ static struct davinci_nand_pdata if (!of_property_read_string(pdev->dev.of_node, "ti,davinci-ecc-mode", &mode)) { if (!strncmp("none", mode, 4)) - pdata->ecc_mode = NAND_ECC_NONE; + pdata->engine_type = NAND_ECC_ENGINE_TYPE_NONE; if (!strncmp("soft", mode, 4)) - pdata->ecc_mode = NAND_ECC_SOFT; + pdata->engine_type = NAND_ECC_ENGINE_TYPE_SOFT; if (!strncmp("hw", mode, 2)) - pdata->ecc_mode = NAND_ECC_HW; + pdata->engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; } if (!of_property_read_u32(pdev->dev.of_node, "ti,davinci-ecc-bits", &prop)) @@ -585,21 +585,21 @@ static int davinci_nand_attach_chip(struct nand_chip *chip) if (IS_ERR(pdata)) return PTR_ERR(pdata); - switch (info->chip.ecc.mode) { - case NAND_ECC_NONE: + switch (info->chip.ecc.engine_type) { + case NAND_ECC_ENGINE_TYPE_NONE: pdata->ecc_bits = 0; break; - case NAND_ECC_SOFT: + case NAND_ECC_ENGINE_TYPE_SOFT: pdata->ecc_bits = 0; /* - * This driver expects Hamming based ECC when ecc_mode is set - * to NAND_ECC_SOFT. Force ecc.algo to NAND_ECC_ALGO_HAMMING to - * avoid adding an extra ->ecc_algo field to - * davinci_nand_pdata. + * This driver expects Hamming based ECC when engine_type is set + * to NAND_ECC_ENGINE_TYPE_SOFT. Force ecc.algo to + * NAND_ECC_ALGO_HAMMING to avoid adding an extra ->ecc_algo + * field to davinci_nand_pdata. */ info->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; break; - case NAND_ECC_HW: + case NAND_ECC_ENGINE_TYPE_ON_HOST: if (pdata->ecc_bits == 4) { int chunks = mtd->writesize / 512; @@ -850,7 +850,7 @@ static int nand_davinci_probe(struct platform_device *pdev) info->mask_cle = pdata->mask_cle ? : MASK_CLE; /* Use board-specific ECC config */ - info->chip.ecc.mode = pdata->ecc_mode; + info->chip.ecc.engine_type = pdata->engine_type; info->chip.ecc.placement = pdata->ecc_placement; spin_lock_irq(&davinci_nand_lock); diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c index 0e54b8a61cf0..fa2439cb4daa 100644 --- a/drivers/mtd/nand/raw/denali.c +++ b/drivers/mtd/nand/raw/denali.c @@ -1237,7 +1237,7 @@ int denali_chip_init(struct denali_controller *denali, chip->bbt_options |= NAND_BBT_USE_FLASH; chip->bbt_options |= NAND_BBT_NO_OOB; chip->options |= NAND_NO_SUBPAGE_WRITE; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; chip->ecc.read_page = denali_read_page; chip->ecc.write_page = denali_write_page; diff --git a/drivers/mtd/nand/raw/diskonchip.c b/drivers/mtd/nand/raw/diskonchip.c index 40360352136b..94432a453e5e 100644 --- a/drivers/mtd/nand/raw/diskonchip.c +++ b/drivers/mtd/nand/raw/diskonchip.c @@ -1456,7 +1456,7 @@ static int __init doc_probe(unsigned long physadr) nand->ecc.calculate = doc200x_calculate_ecc; nand->ecc.correct = doc200x_correct_data; - nand->ecc.mode = NAND_ECC_HW; + nand->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; nand->ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; nand->ecc.size = 512; nand->ecc.bytes = 6; diff --git a/drivers/mtd/nand/raw/fsl_elbc_nand.c b/drivers/mtd/nand/raw/fsl_elbc_nand.c index da89389faaae..b2af7f81fdf8 100644 --- a/drivers/mtd/nand/raw/fsl_elbc_nand.c +++ b/drivers/mtd/nand/raw/fsl_elbc_nand.c @@ -244,7 +244,7 @@ static int fsl_elbc_run_command(struct mtd_info *mtd) return -EIO; } - if (chip->ecc.mode != NAND_ECC_HW) + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) return 0; elbc_fcm_ctrl->max_bitflips = 0; @@ -727,12 +727,12 @@ static int fsl_elbc_attach_chip(struct nand_chip *chip) struct fsl_lbc_regs __iomem *lbc = ctrl->regs; unsigned int al; - switch (chip->ecc.mode) { + switch (chip->ecc.engine_type) { /* * if ECC was not chosen in DT, decide whether to use HW or SW ECC from * CS Base Register */ - case NAND_ECC_NONE: + case NAND_ECC_ENGINE_TYPE_NONE: /* If CS Base Register selects full hardware ECC then use it */ if ((in_be32(&lbc->bank[priv->bank].br) & BR_DECC) == BR_DECC_CHK_GEN) { @@ -740,23 +740,23 @@ static int fsl_elbc_attach_chip(struct nand_chip *chip) chip->ecc.write_page = fsl_elbc_write_page; chip->ecc.write_subpage = fsl_elbc_write_subpage; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; mtd_set_ooblayout(mtd, &fsl_elbc_ooblayout_ops); chip->ecc.size = 512; chip->ecc.bytes = 3; chip->ecc.strength = 1; } else { /* otherwise fall back to default software ECC */ - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_HAMMING; } break; /* if SW ECC was chosen in DT, we do not need to set anything here */ - case NAND_ECC_SOFT: + case NAND_ECC_ENGINE_TYPE_SOFT: break; - /* should we also implement NAND_ECC_HW to do as the code above? */ + /* should we also implement *_ECC_ENGINE_CONTROLLER to do as above? */ default: return -EINVAL; } @@ -786,8 +786,8 @@ static int fsl_elbc_attach_chip(struct nand_chip *chip) chip->page_shift); dev_dbg(priv->dev, "fsl_elbc_init: nand->phys_erase_shift = %d\n", chip->phys_erase_shift); - dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.mode = %d\n", - chip->ecc.mode); + dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.engine_type = %d\n", + chip->ecc.engine_type); dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.steps = %d\n", chip->ecc.steps); dev_dbg(priv->dev, "fsl_elbc_init: nand->ecc.bytes = %d\n", diff --git a/drivers/mtd/nand/raw/fsl_ifc_nand.c b/drivers/mtd/nand/raw/fsl_ifc_nand.c index b2ae759dd14e..0e7a9b64301e 100644 --- a/drivers/mtd/nand/raw/fsl_ifc_nand.c +++ b/drivers/mtd/nand/raw/fsl_ifc_nand.c @@ -309,7 +309,7 @@ static void fsl_ifc_cmdfunc(struct nand_chip *chip, unsigned int command, ifc_nand_ctrl->read_bytes = mtd->writesize + mtd->oobsize; ifc_nand_ctrl->index += column; - if (chip->ecc.mode == NAND_ECC_HW) + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) ifc_nand_ctrl->eccread = 1; fsl_ifc_do_read(chip, 0, mtd); @@ -724,8 +724,8 @@ static int fsl_ifc_attach_chip(struct nand_chip *chip) chip->page_shift); dev_dbg(priv->dev, "%s: nand->phys_erase_shift = %d\n", __func__, chip->phys_erase_shift); - dev_dbg(priv->dev, "%s: nand->ecc.mode = %d\n", __func__, - chip->ecc.mode); + dev_dbg(priv->dev, "%s: nand->ecc.engine_type = %d\n", __func__, + chip->ecc.engine_type); dev_dbg(priv->dev, "%s: nand->ecc.steps = %d\n", __func__, chip->ecc.steps); dev_dbg(priv->dev, "%s: nand->ecc.bytes = %d\n", __func__, @@ -912,7 +912,7 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) /* Must also set CSOR_NAND_ECC_ENC_EN if DEC_EN set */ if (csor & CSOR_NAND_ECC_DEC_EN) { - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; mtd_set_ooblayout(mtd, &fsl_ifc_ooblayout_ops); /* Hardware generates ECC per 512 Bytes */ @@ -925,7 +925,7 @@ static int fsl_ifc_chip_init(struct fsl_ifc_mtd *priv) chip->ecc.strength = 8; } } else { - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_HAMMING; } diff --git a/drivers/mtd/nand/raw/fsl_upm.c b/drivers/mtd/nand/raw/fsl_upm.c index 04cf7d14082a..d5813b9abc8e 100644 --- a/drivers/mtd/nand/raw/fsl_upm.c +++ b/drivers/mtd/nand/raw/fsl_upm.c @@ -47,7 +47,7 @@ static int fun_chip_init(struct fsl_upm_nand *fun, int ret; struct device_node *flash_np; - fun->chip.ecc.mode = NAND_ECC_SOFT; + fun->chip.ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; fun->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; fun->chip.controller = &fun->base; mtd->dev.parent = fun->dev; diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 580b9fe8ca42..4191831df182 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -900,8 +900,8 @@ static int fsmc_nand_attach_chip(struct nand_chip *nand) return 0; } - switch (nand->ecc.mode) { - case NAND_ECC_HW: + switch (nand->ecc.engine_type) { + case NAND_ECC_ENGINE_TYPE_ON_HOST: dev_info(host->dev, "Using 1-bit HW ECC scheme\n"); nand->ecc.calculate = fsmc_read_hwecc_ecc1; nand->ecc.correct = nand_correct_data; @@ -910,14 +910,14 @@ static int fsmc_nand_attach_chip(struct nand_chip *nand) nand->ecc.options |= NAND_ECC_SOFT_HAMMING_SM_ORDER; break; - case NAND_ECC_SOFT: + case NAND_ECC_ENGINE_TYPE_SOFT: if (nand->ecc.algo == NAND_ECC_ALGO_BCH) { dev_info(host->dev, "Using 4-bit SW BCH ECC scheme\n"); break; } - case NAND_ECC_ON_DIE: + case NAND_ECC_ENGINE_TYPE_ON_DIE: break; default: @@ -929,7 +929,7 @@ static int fsmc_nand_attach_chip(struct nand_chip *nand) * Don't set layout for BCH4 SW ECC. This will be * generated later in nand_bch_init() later. */ - if (nand->ecc.mode == NAND_ECC_HW) { + if (nand->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) { switch (mtd->oobsize) { case 16: case 64: @@ -1059,7 +1059,7 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) * Setup default ECC mode. nand_dt_init() called from nand_scan_ident() * can overwrite this value if the DT provides a different value. */ - nand->ecc.mode = NAND_ECC_HW; + nand->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; nand->ecc.hwctl = fsmc_enable_hwecc; nand->ecc.size = 512; nand->badblockbits = 7; diff --git a/drivers/mtd/nand/raw/gpio.c b/drivers/mtd/nand/raw/gpio.c index c8f498eaabeb..4ec0a1e10867 100644 --- a/drivers/mtd/nand/raw/gpio.c +++ b/drivers/mtd/nand/raw/gpio.c @@ -342,7 +342,7 @@ static int gpio_nand_probe(struct platform_device *pdev) gpiomtd->base.ops = &gpio_nand_ops; nand_set_flash_node(chip, pdev->dev.of_node); - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_HAMMING; chip->options = gpiomtd->plat.options; chip->controller = &gpiomtd->base; diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c index 5d4aee46cc55..9b015d360a50 100644 --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c @@ -2032,7 +2032,7 @@ static int gpmi_init_last(struct gpmi_nand_data *this) ecc->write_page_raw = gpmi_ecc_write_page_raw; ecc->read_oob_raw = gpmi_ecc_read_oob_raw; ecc->write_oob_raw = gpmi_ecc_write_oob_raw; - ecc->mode = NAND_ECC_HW; + ecc->engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; ecc->size = bch_geo->ecc_chunk_size; ecc->strength = bch_geo->ecc_strength; mtd_set_ooblayout(mtd, &gpmi_ooblayout_ops); diff --git a/drivers/mtd/nand/raw/hisi504_nand.c b/drivers/mtd/nand/raw/hisi504_nand.c index b84238e2268a..8b2122ce6ec3 100644 --- a/drivers/mtd/nand/raw/hisi504_nand.c +++ b/drivers/mtd/nand/raw/hisi504_nand.c @@ -186,7 +186,7 @@ static void hisi_nfc_dma_transfer(struct hinfc_host *host, int todev) hinfc_write(host, host->dma_buffer, HINFC504_DMA_ADDR_DATA); hinfc_write(host, host->dma_oob, HINFC504_DMA_ADDR_OOB); - if (chip->ecc.mode == NAND_ECC_NONE) { + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_NONE) { hinfc_write(host, ((mtd->oobsize & HINFC504_DMA_LEN_OOB_MASK) << HINFC504_DMA_LEN_OOB_SHIFT), HINFC504_DMA_LEN); @@ -468,7 +468,7 @@ static void hisi_nfc_cmdfunc(struct nand_chip *chip, unsigned command, case NAND_CMD_STATUS: flag = hinfc_read(host, HINFC504_CON); - if (chip->ecc.mode == NAND_ECC_HW) + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) hinfc_write(host, flag & ~(HINFC504_CON_ECCTYPE_MASK << HINFC504_CON_ECCTYPE_SHIFT), HINFC504_CON); @@ -721,7 +721,7 @@ static int hisi_nfc_attach_chip(struct nand_chip *chip) } hinfc_write(host, flag, HINFC504_CON); - if (chip->ecc.mode == NAND_ECC_HW) + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) hisi_nfc_ecc_probe(host); return 0; diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c index 69423bb29adb..70309f18124c 100644 --- a/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c +++ b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c @@ -194,8 +194,8 @@ static int ingenic_nand_attach_chip(struct nand_chip *chip) (chip->ecc.strength / 8); } - switch (chip->ecc.mode) { - case NAND_ECC_HW: + switch (chip->ecc.engine_type) { + case NAND_ECC_ENGINE_TYPE_ON_HOST: if (!nfc->ecc) { dev_err(nfc->dev, "HW ECC selected, but ECC controller not found\n"); return -ENODEV; @@ -205,22 +205,22 @@ static int ingenic_nand_attach_chip(struct nand_chip *chip) chip->ecc.calculate = ingenic_nand_ecc_calculate; chip->ecc.correct = ingenic_nand_ecc_correct; fallthrough; - case NAND_ECC_SOFT: + case NAND_ECC_ENGINE_TYPE_SOFT: dev_info(nfc->dev, "using %s (strength %d, size %d, bytes %d)\n", (nfc->ecc) ? "hardware ECC" : "software ECC", chip->ecc.strength, chip->ecc.size, chip->ecc.bytes); break; - case NAND_ECC_NONE: + case NAND_ECC_ENGINE_TYPE_NONE: dev_info(nfc->dev, "not using ECC\n"); break; default: dev_err(nfc->dev, "ECC mode %d not supported\n", - chip->ecc.mode); + chip->ecc.engine_type); return -EINVAL; } /* The NAND core will generate the ECC layout for SW ECC */ - if (chip->ecc.mode != NAND_ECC_HW) + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) return 0; /* Generate ECC layout. ECC codes are right aligned in the OOB area. */ @@ -404,7 +404,7 @@ static int ingenic_nand_init_chip(struct platform_device *pdev, mtd->dev.parent = dev; chip->options = NAND_NO_SUBPAGE_WRITE; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->controller = &nfc->controller; nand_set_flash_node(chip, np); diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index 7521038af2ef..4940bb2e3c07 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -656,7 +656,7 @@ static int lpc32xx_nand_attach_chip(struct nand_chip *chip) if (!host->dummy_buf) return -ENOMEM; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 512; mtd_set_ooblayout(mtd, &lpc32xx_ooblayout_ops); host->mlcsubpages = mtd->writesize / 512; diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c index ccb189c8e343..6db9d2ed6881 100644 --- a/drivers/mtd/nand/raw/lpc32xx_slc.c +++ b/drivers/mtd/nand/raw/lpc32xx_slc.c @@ -881,7 +881,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) platform_set_drvdata(pdev, host); /* NAND callbacks for LPC32xx SLC hardware */ - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; chip->legacy.read_byte = lpc32xx_nand_read_byte; chip->legacy.read_buf = lpc32xx_nand_read_buf; diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c index b2200aa787f2..88f8ed051226 100644 --- a/drivers/mtd/nand/raw/marvell_nand.c +++ b/drivers/mtd/nand/raw/marvell_nand.c @@ -2250,7 +2250,8 @@ static int marvell_nand_ecc_init(struct mtd_info *mtd, struct marvell_nfc *nfc = to_marvell_nfc(chip->controller); int ret; - if (ecc->mode != NAND_ECC_NONE && (!ecc->size || !ecc->strength)) { + if (ecc->engine_type != NAND_ECC_ENGINE_TYPE_NONE && + (!ecc->size || !ecc->strength)) { if (chip->base.eccreq.step_size && chip->base.eccreq.strength) { ecc->size = chip->base.eccreq.step_size; ecc->strength = chip->base.eccreq.strength; @@ -2262,15 +2263,15 @@ static int marvell_nand_ecc_init(struct mtd_info *mtd, } } - switch (ecc->mode) { - case NAND_ECC_HW: + switch (ecc->engine_type) { + case NAND_ECC_ENGINE_TYPE_ON_HOST: ret = marvell_nand_hw_ecc_controller_init(mtd, ecc); if (ret) return ret; break; - case NAND_ECC_NONE: - case NAND_ECC_SOFT: - case NAND_ECC_ON_DIE: + case NAND_ECC_ENGINE_TYPE_NONE: + case NAND_ECC_ENGINE_TYPE_SOFT: + case NAND_ECC_ENGINE_TYPE_ON_DIE: if (!nfc->caps->is_nfcv2 && mtd->writesize != SZ_512 && mtd->writesize != SZ_2K) { dev_err(nfc->dev, "NFCv1 cannot write %d bytes pages\n", @@ -2467,7 +2468,7 @@ static int marvell_nand_attach_chip(struct nand_chip *chip) return ret; } - if (chip->ecc.mode == NAND_ECC_HW) { + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) { /* * Subpage write not available with hardware ECC, prohibit also * subpage read as in userspace subpage access would still be @@ -2642,7 +2643,7 @@ static int marvell_nand_chip_init(struct device *dev, struct marvell_nfc *nfc, * Default to HW ECC engine mode. If the nand-ecc-mode property is given * in the DT node, this entry will be overwritten in nand_scan_ident(). */ - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; /* * Save a reference value for timing registers before diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c index 0e5829a2b54f..48e6dac96be6 100644 --- a/drivers/mtd/nand/raw/meson_nand.c +++ b/drivers/mtd/nand/raw/meson_nand.c @@ -1197,7 +1197,7 @@ static int meson_nand_attach_chip(struct nand_chip *nand) if (ret) return -EINVAL; - nand->ecc.mode = NAND_ECC_HW; + nand->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; nand->ecc.write_page_raw = meson_nfc_write_page_raw; nand->ecc.write_page = meson_nfc_write_page_hwecc; nand->ecc.write_oob_raw = nand_write_oob_std; diff --git a/drivers/mtd/nand/raw/mpc5121_nfc.c b/drivers/mtd/nand/raw/mpc5121_nfc.c index a67eded226db..dfd0d3ed5ed0 100644 --- a/drivers/mtd/nand/raw/mpc5121_nfc.c +++ b/drivers/mtd/nand/raw/mpc5121_nfc.c @@ -688,7 +688,7 @@ static int mpc5121_nfc_probe(struct platform_device *op) chip->legacy.set_features = nand_get_set_features_notsupp; chip->legacy.get_features = nand_get_set_features_notsupp; chip->bbt_options = NAND_BBT_USE_FLASH; - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_HAMMING; /* Support external chip-select logic on ADS5121 board */ diff --git a/drivers/mtd/nand/raw/mtk_nand.c b/drivers/mtd/nand/raw/mtk_nand.c index ad1b55dab211..42966fe22d8b 100644 --- a/drivers/mtd/nand/raw/mtk_nand.c +++ b/drivers/mtd/nand/raw/mtk_nand.c @@ -1258,8 +1258,8 @@ static int mtk_nfc_ecc_init(struct device *dev, struct mtd_info *mtd) int free, ret; /* support only ecc hw mode */ - if (nand->ecc.mode != NAND_ECC_HW) { - dev_err(dev, "ecc.mode not supported\n"); + if (nand->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) { + dev_err(dev, "ecc.engine_type not supported\n"); return -EINVAL; } @@ -1416,7 +1416,7 @@ static int mtk_nfc_nand_chip_init(struct device *dev, struct mtk_nfc *nfc, nand->options |= NAND_USES_DMA | NAND_SUBPAGE_READ; /* set default mode in case dt entry is missing */ - nand->ecc.mode = NAND_ECC_HW; + nand->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; nand->ecc.write_subpage = mtk_nfc_write_subpage_hwecc; nand->ecc.write_page_raw = mtk_nfc_write_page_raw; diff --git a/drivers/mtd/nand/raw/mxc_nand.c b/drivers/mtd/nand/raw/mxc_nand.c index 65448fb223b8..d4200eb2ad32 100644 --- a/drivers/mtd/nand/raw/mxc_nand.c +++ b/drivers/mtd/nand/raw/mxc_nand.c @@ -669,7 +669,7 @@ static void mxc_nand_enable_hwecc_v1_v2(struct nand_chip *chip, bool enable) struct mxc_nand_host *host = nand_get_controller_data(chip); uint16_t config1; - if (chip->ecc.mode != NAND_ECC_HW) + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) return; config1 = readw(NFC_V1_V2_CONFIG1); @@ -687,7 +687,7 @@ static void mxc_nand_enable_hwecc_v3(struct nand_chip *chip, bool enable) struct mxc_nand_host *host = nand_get_controller_data(chip); uint32_t config2; - if (chip->ecc.mode != NAND_ECC_HW) + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) return; config2 = readl(NFC_V3_CONFIG2); @@ -1117,7 +1117,8 @@ static void preset_v1(struct mtd_info *mtd) struct mxc_nand_host *host = nand_get_controller_data(nand_chip); uint16_t config1 = 0; - if (nand_chip->ecc.mode == NAND_ECC_HW && mtd->writesize) + if (nand_chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST && + mtd->writesize) config1 |= NFC_V1_V2_CONFIG1_ECC_EN; if (!host->devtype_data->irqpending_quirk) @@ -1227,7 +1228,7 @@ static void preset_v2(struct mtd_info *mtd) if (mtd->writesize) { uint16_t pages_per_block = mtd->erasesize / mtd->writesize; - if (nand_chip->ecc.mode == NAND_ECC_HW) + if (nand_chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) config1 |= NFC_V1_V2_CONFIG1_ECC_EN; host->eccsize = get_eccsize(mtd); @@ -1303,7 +1304,7 @@ static void preset_v3(struct mtd_info *mtd) } if (mtd->writesize) { - if (chip->ecc.mode == NAND_ECC_HW) + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) config2 |= NFC_V3_CONFIG2_ECC_EN; config2 |= NFC_V3_CONFIG2_PPB( @@ -1680,8 +1681,8 @@ static int mxcnd_attach_chip(struct nand_chip *chip) struct mxc_nand_host *host = nand_get_controller_data(chip); struct device *dev = mtd->dev.parent; - switch (chip->ecc.mode) { - case NAND_ECC_HW: + switch (chip->ecc.engine_type) { + case NAND_ECC_ENGINE_TYPE_ON_HOST: chip->ecc.read_page = mxc_nand_read_page; chip->ecc.read_page_raw = mxc_nand_read_page_raw; chip->ecc.read_oob = mxc_nand_read_oob; @@ -1690,7 +1691,7 @@ static int mxcnd_attach_chip(struct nand_chip *chip) chip->ecc.write_oob = mxc_nand_write_oob; break; - case NAND_ECC_SOFT: + case NAND_ECC_ENGINE_TYPE_SOFT: break; default: @@ -1728,7 +1729,7 @@ static int mxcnd_attach_chip(struct nand_chip *chip) */ host->used_oobsize = min(mtd->oobsize, 218U); - if (chip->ecc.mode == NAND_ECC_HW) { + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) { if (is_imx21_nfc(host) || is_imx27_nfc(host)) chip->ecc.strength = 1; else @@ -1843,9 +1844,9 @@ static int mxcnd_probe(struct platform_device *pdev) mtd_set_ooblayout(mtd, host->devtype_data->ooblayout); if (host->pdata.hw_ecc) { - this->ecc.mode = NAND_ECC_HW; + this->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; } else { - this->ecc.mode = NAND_ECC_SOFT; + this->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; this->ecc.algo = NAND_ECC_ALGO_HAMMING; } diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 172852a29a50..4b406b0f783c 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5041,28 +5041,45 @@ static const char * const nand_ecc_modes[] = { [NAND_ECC_ON_DIE] = "on-die", }; -static int of_get_nand_ecc_mode(struct device_node *np) +static enum nand_ecc_engine_type +of_get_nand_ecc_engine_type(struct device_node *np) { + enum nand_ecc_mode eng_type; const char *pm; - int err, i; + int err; err = of_property_read_string(np, "nand-ecc-mode", &pm); - if (err < 0) - return err; + if (err) + return NAND_ECC_ENGINE_TYPE_INVALID; - for (i = NAND_ECC_NONE; i < ARRAY_SIZE(nand_ecc_modes); i++) - if (!strcasecmp(pm, nand_ecc_modes[i])) - return i; + for (eng_type = NAND_ECC_NONE; + eng_type < ARRAY_SIZE(nand_ecc_modes); eng_type++) { + if (!strcasecmp(pm, nand_ecc_modes[eng_type])) { + switch (eng_type) { + case NAND_ECC_NONE: + return NAND_ECC_ENGINE_TYPE_NONE; + case NAND_ECC_SOFT: + return NAND_ECC_ENGINE_TYPE_SOFT; + case NAND_ECC_HW: + case NAND_ECC_HW_SYNDROME: + return NAND_ECC_ENGINE_TYPE_ON_HOST; + case NAND_ECC_ON_DIE: + return NAND_ECC_ENGINE_TYPE_ON_DIE; + default: + break; + } + } + } /* * For backward compatibility we support few obsoleted values that don't - * have their mappings into the nand_ecc_mode enum anymore (they were - * merged with other enums). + * have their mappings into the nand_ecc_engine_providers enum anymore + * (they were merged with other enums). */ if (!strcasecmp(pm, "soft_bch")) - return NAND_ECC_SOFT; + return NAND_ECC_ENGINE_TYPE_SOFT; - return -ENODEV; + return NAND_ECC_ENGINE_TYPE_INVALID; } static const char * const nand_ecc_algos[] = { @@ -5144,8 +5161,9 @@ static bool of_get_nand_on_flash_bbt(struct device_node *np) static int nand_dt_init(struct nand_chip *chip) { struct device_node *dn = nand_get_flash_node(chip); + enum nand_ecc_engine_type ecc_type; enum nand_ecc_algo ecc_algo; - int ecc_mode, ecc_strength, ecc_step; + int ecc_strength, ecc_step; if (!dn) return 0; @@ -5159,13 +5177,13 @@ static int nand_dt_init(struct nand_chip *chip) if (of_get_nand_on_flash_bbt(dn)) chip->bbt_options |= NAND_BBT_USE_FLASH; - ecc_mode = of_get_nand_ecc_mode(dn); + ecc_type = of_get_nand_ecc_engine_type(dn); ecc_algo = of_get_nand_ecc_algo(dn); ecc_strength = of_get_nand_ecc_strength(dn); ecc_step = of_get_nand_ecc_step_size(dn); - if (ecc_mode >= 0) - chip->ecc.mode = ecc_mode; + if (ecc_type != NAND_ECC_ENGINE_TYPE_INVALID) + chip->ecc.engine_type = ecc_type; if (ecc_algo != NAND_ECC_ALGO_UNKNOWN) chip->ecc.algo = ecc_algo; @@ -5287,7 +5305,7 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip) struct mtd_info *mtd = nand_to_mtd(chip); struct nand_ecc_ctrl *ecc = &chip->ecc; - if (WARN_ON(ecc->mode != NAND_ECC_SOFT)) + if (WARN_ON(ecc->engine_type != NAND_ECC_ENGINE_TYPE_SOFT)) return -EINVAL; switch (ecc->algo) { @@ -5752,7 +5770,8 @@ static int nand_scan_tail(struct nand_chip *chip) * If no default placement scheme is given, select an appropriate one. */ if (!mtd->ooblayout && - !(ecc->mode == NAND_ECC_SOFT && ecc->algo == NAND_ECC_ALGO_BCH)) { + !(ecc->engine_type == NAND_ECC_ENGINE_TYPE_SOFT && + ecc->algo == NAND_ECC_ALGO_BCH)) { switch (mtd->oobsize) { case 8: case 16: @@ -5770,7 +5789,7 @@ static int nand_scan_tail(struct nand_chip *chip) * page with ECC layout when ->oobsize <= 128 for * compatibility reasons. */ - if (ecc->mode == NAND_ECC_NONE) { + if (ecc->engine_type == NAND_ECC_ENGINE_TYPE_NONE) { mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); break; @@ -5788,8 +5807,9 @@ static int nand_scan_tail(struct nand_chip *chip) * selected and we have 256 byte pagesize fallback to software ECC */ - switch (ecc->mode) { - case NAND_ECC_HW: + switch (ecc->engine_type) { + case NAND_ECC_ENGINE_TYPE_ON_HOST: + switch (ecc->placement) { case NAND_ECC_PLACEMENT_UNKNOWN: case NAND_ECC_PLACEMENT_OOB: @@ -5854,11 +5874,11 @@ static int nand_scan_tail(struct nand_chip *chip) } pr_warn("%d byte HW ECC not possible on %d byte page size, fallback to SW ECC\n", ecc->size, mtd->writesize); - ecc->mode = NAND_ECC_SOFT; + ecc->engine_type = NAND_ECC_ENGINE_TYPE_SOFT; ecc->algo = NAND_ECC_ALGO_HAMMING; fallthrough; - case NAND_ECC_SOFT: + case NAND_ECC_ENGINE_TYPE_SOFT: ret = nand_set_ecc_soft_ops(chip); if (ret) { ret = -EINVAL; @@ -5866,7 +5886,7 @@ static int nand_scan_tail(struct nand_chip *chip) } break; - case NAND_ECC_ON_DIE: + case NAND_ECC_ENGINE_TYPE_ON_DIE: if (!ecc->read_page || !ecc->write_page) { WARN(1, "No ECC functions supplied; on-die ECC not possible\n"); ret = -EINVAL; @@ -5878,8 +5898,8 @@ static int nand_scan_tail(struct nand_chip *chip) ecc->write_oob = nand_write_oob_std; break; - case NAND_ECC_NONE: - pr_warn("NAND_ECC_NONE selected by board driver. This is not recommended!\n"); + case NAND_ECC_ENGINE_TYPE_NONE: + pr_warn("NAND_ECC_ENGINE_TYPE_NONE selected by board driver. This is not recommended!\n"); ecc->read_page = nand_read_page_raw; ecc->write_page = nand_write_page_raw; ecc->read_oob = nand_read_oob_std; @@ -5892,7 +5912,7 @@ static int nand_scan_tail(struct nand_chip *chip) break; default: - WARN(1, "Invalid NAND_ECC_MODE %d\n", ecc->mode); + WARN(1, "Invalid NAND_ECC_MODE %d\n", ecc->engine_type); ret = -EINVAL; goto err_nand_manuf_cleanup; } @@ -5969,8 +5989,8 @@ static int nand_scan_tail(struct nand_chip *chip) chip->pagecache.page = -1; /* Large page NAND with SOFT_ECC should support subpage reads */ - switch (ecc->mode) { - case NAND_ECC_SOFT: + switch (ecc->engine_type) { + case NAND_ECC_ENGINE_TYPE_SOFT: if (chip->page_shift > 9) chip->options |= NAND_SUBPAGE_READ; break; @@ -6114,7 +6134,7 @@ EXPORT_SYMBOL(nand_scan_with_ids); */ void nand_cleanup(struct nand_chip *chip) { - if (chip->ecc.mode == NAND_ECC_SOFT && + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_SOFT && chip->ecc.algo == NAND_ECC_ALGO_BCH) nand_bch_free((struct nand_bch_control *)chip->ecc.priv); diff --git a/drivers/mtd/nand/raw/nand_micron.c b/drivers/mtd/nand/raw/nand_micron.c index 2d54a3aa15b1..c43afaf21482 100644 --- a/drivers/mtd/nand/raw/nand_micron.c +++ b/drivers/mtd/nand/raw/nand_micron.c @@ -497,13 +497,13 @@ static int micron_nand_init(struct nand_chip *chip) ondie = micron_supports_on_die_ecc(chip); if (ondie == MICRON_ON_DIE_MANDATORY && - chip->ecc.mode != NAND_ECC_ON_DIE) { + chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_DIE) { pr_err("On-die ECC forcefully enabled, not supported\n"); ret = -EINVAL; goto err_free_manuf_data; } - if (chip->ecc.mode == NAND_ECC_ON_DIE) { + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_DIE) { if (ondie == MICRON_ON_DIE_UNSUPPORTED) { pr_err("On-die ECC selected but not supported\n"); ret = -EINVAL; diff --git a/drivers/mtd/nand/raw/nand_toshiba.c b/drivers/mtd/nand/raw/nand_toshiba.c index f746c19f3b2c..7ba0516c6247 100644 --- a/drivers/mtd/nand/raw/nand_toshiba.c +++ b/drivers/mtd/nand/raw/nand_toshiba.c @@ -273,7 +273,8 @@ static int toshiba_nand_init(struct nand_chip *chip) chip->options |= NAND_BBM_FIRSTPAGE | NAND_BBM_SECONDPAGE; /* Check that chip is BENAND and ECC mode is on-die */ - if (nand_is_slc(chip) && chip->ecc.mode == NAND_ECC_ON_DIE && + if (nand_is_slc(chip) && + chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_DIE && chip->id.data[4] & TOSHIBA_NAND_ID4_IS_BENAND) toshiba_nand_benand_init(chip); diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c index 1ab849ccaa96..a8048cb8d220 100644 --- a/drivers/mtd/nand/raw/nandsim.c +++ b/drivers/mtd/nand/raw/nandsim.c @@ -2234,7 +2234,7 @@ static int ns_attach_chip(struct nand_chip *chip) return -EINVAL; } - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_BCH; chip->ecc.size = 512; chip->ecc.strength = bch; @@ -2274,7 +2274,7 @@ static int __init ns_init_module(void) nsmtd = nand_to_mtd(chip); nand_set_controller_data(chip, (void *)ns); - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_HAMMING; /* The NAND_SKIP_BBTSCAN option is necessary for 'overridesize' */ /* and 'badblocks' parameters to work */ diff --git a/drivers/mtd/nand/raw/ndfc.c b/drivers/mtd/nand/raw/ndfc.c index ed38338c1383..0fb4ba93c41e 100644 --- a/drivers/mtd/nand/raw/ndfc.c +++ b/drivers/mtd/nand/raw/ndfc.c @@ -149,7 +149,7 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc, chip->ecc.correct = nand_correct_data; chip->ecc.hwctl = ndfc_enable_hwecc; chip->ecc.calculate = ndfc_calculate_ecc; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 256; chip->ecc.bytes = 3; chip->ecc.strength = 1; diff --git a/drivers/mtd/nand/raw/omap2.c b/drivers/mtd/nand/raw/omap2.c index 967ddbda1c48..512f60780a50 100644 --- a/drivers/mtd/nand/raw/omap2.c +++ b/drivers/mtd/nand/raw/omap2.c @@ -884,8 +884,8 @@ static int omap_correct_data(struct nand_chip *chip, u_char *dat, int stat = 0; /* Ex NAND_ECC_HW12_2048 */ - if ((info->nand.ecc.mode == NAND_ECC_HW) && - (info->nand.ecc.size == 2048)) + if (info->nand.ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST && + info->nand.ecc.size == 2048) blockCnt = 4; else blockCnt = 1; @@ -2006,11 +2006,11 @@ static int omap_nand_attach_chip(struct nand_chip *chip) return -EINVAL; /* - * Bail out earlier to let NAND_ECC_SOFT code create its own + * Bail out earlier to let NAND_ECC_ENGINE_TYPE_SOFT code create its own * ooblayout instead of using ours. */ if (info->ecc_opt == OMAP_ECC_HAM1_CODE_SW) { - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_HAMMING; return 0; } @@ -2019,7 +2019,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip) switch (info->ecc_opt) { case OMAP_ECC_HAM1_CODE_HW: dev_info(dev, "nand: using OMAP_ECC_HAM1_CODE_HW\n"); - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.bytes = 3; chip->ecc.size = 512; chip->ecc.strength = 1; @@ -2036,7 +2036,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip) case OMAP_ECC_BCH4_CODE_HW_DETECTION_SW: pr_info("nand: using OMAP_ECC_BCH4_CODE_HW_DETECTION_SW\n"); - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 512; chip->ecc.bytes = 7; chip->ecc.strength = 4; @@ -2056,7 +2056,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip) case OMAP_ECC_BCH4_CODE_HW: pr_info("nand: using OMAP_ECC_BCH4_CODE_HW ECC scheme\n"); - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 512; /* 14th bit is kept reserved for ROM-code compatibility */ chip->ecc.bytes = 7 + 1; @@ -2078,7 +2078,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip) case OMAP_ECC_BCH8_CODE_HW_DETECTION_SW: pr_info("nand: using OMAP_ECC_BCH8_CODE_HW_DETECTION_SW\n"); - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 512; chip->ecc.bytes = 13; chip->ecc.strength = 8; @@ -2098,7 +2098,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip) case OMAP_ECC_BCH8_CODE_HW: pr_info("nand: using OMAP_ECC_BCH8_CODE_HW ECC scheme\n"); - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 512; /* 14th bit is kept reserved for ROM-code compatibility */ chip->ecc.bytes = 13 + 1; @@ -2121,7 +2121,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip) case OMAP_ECC_BCH16_CODE_HW: pr_info("Using OMAP_ECC_BCH16_CODE_HW ECC scheme\n"); - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 512; chip->ecc.bytes = 26; chip->ecc.strength = 16; diff --git a/drivers/mtd/nand/raw/orion_nand.c b/drivers/mtd/nand/raw/orion_nand.c index 7a5cfa3d883f..df9c0f8e4b4e 100644 --- a/drivers/mtd/nand/raw/orion_nand.c +++ b/drivers/mtd/nand/raw/orion_nand.c @@ -139,7 +139,7 @@ static int __init orion_nand_probe(struct platform_device *pdev) nc->legacy.IO_ADDR_R = nc->legacy.IO_ADDR_W = io_base; nc->legacy.cmd_ctrl = orion_nand_cmd_ctrl; nc->legacy.read_buf = orion_nand_read_buf; - nc->ecc.mode = NAND_ECC_SOFT; + nc->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; nc->ecc.algo = NAND_ECC_ALGO_HAMMING; if (board->chip_delay) diff --git a/drivers/mtd/nand/raw/pasemi_nand.c b/drivers/mtd/nand/raw/pasemi_nand.c index 3eddc284614d..155e8c8f61e2 100644 --- a/drivers/mtd/nand/raw/pasemi_nand.c +++ b/drivers/mtd/nand/raw/pasemi_nand.c @@ -132,7 +132,7 @@ static int pasemi_nand_probe(struct platform_device *ofdev) chip->legacy.read_buf = pasemi_read_buf; chip->legacy.write_buf = pasemi_write_buf; chip->legacy.chip_delay = 0; - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_HAMMING; /* Enable the following for a flash based bad block table */ diff --git a/drivers/mtd/nand/raw/plat_nand.c b/drivers/mtd/nand/raw/plat_nand.c index dbc089c8872f..b98c0d5c413f 100644 --- a/drivers/mtd/nand/raw/plat_nand.c +++ b/drivers/mtd/nand/raw/plat_nand.c @@ -66,7 +66,7 @@ static int plat_nand_probe(struct platform_device *pdev) data->chip.options |= pdata->chip.options; data->chip.bbt_options |= pdata->chip.bbt_options; - data->chip.ecc.mode = NAND_ECC_SOFT; + data->chip.ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; data->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; platform_set_drvdata(pdev, data); diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index bd7a7251429b..3d616e616b26 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -2550,7 +2550,7 @@ static int qcom_nand_attach_chip(struct nand_chip *chip) ecc->write_page_raw = qcom_nandc_write_page_raw; ecc->write_oob = qcom_nandc_write_oob; - ecc->mode = NAND_ECC_HW; + ecc->engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; mtd_set_ooblayout(mtd, &qcom_nand_ooblayout_ops); diff --git a/drivers/mtd/nand/raw/r852.c b/drivers/mtd/nand/raw/r852.c index f0988cda4479..6b7addd2c420 100644 --- a/drivers/mtd/nand/raw/r852.c +++ b/drivers/mtd/nand/raw/r852.c @@ -859,7 +859,7 @@ static int r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id) chip->legacy.write_buf = r852_write_buf; /* ecc */ - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.placement = NAND_ECC_PLACEMENT_INTERLEAVED; chip->ecc.size = R852_DMA_LEN; chip->ecc.bytes = SM_OOB_SIZE; diff --git a/drivers/mtd/nand/raw/s3c2410.c b/drivers/mtd/nand/raw/s3c2410.c index 5a39002d67ef..fbd0fa48e063 100644 --- a/drivers/mtd/nand/raw/s3c2410.c +++ b/drivers/mtd/nand/raw/s3c2410.c @@ -904,7 +904,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, nmtd->info = info; nmtd->set = set; - chip->ecc.mode = info->platform->ecc_mode; + chip->ecc.engine_type = info->platform->engine_type; /* * If you use u-boot BBT creation code, specifying this flag will @@ -929,24 +929,24 @@ static int s3c2410_nand_attach_chip(struct nand_chip *chip) struct mtd_info *mtd = nand_to_mtd(chip); struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); - switch (chip->ecc.mode) { + switch (chip->ecc.engine_type) { - case NAND_ECC_NONE: + case NAND_ECC_ENGINE_TYPE_NONE: dev_info(info->device, "ECC disabled\n"); break; - case NAND_ECC_SOFT: + case NAND_ECC_ENGINE_TYPE_SOFT: /* - * This driver expects Hamming based ECC when ecc_mode is set - * to NAND_ECC_SOFT. Force ecc.algo to NAND_ECC_ALGO_HAMMING to - * avoid adding an extra ecc_algo field to - * s3c2410_platform_nand. + * This driver expects Hamming based ECC when engine_type is set + * to NAND_ECC_ENGINE_TYPE_SOFT. Force ecc.algo to + * NAND_ECC_ALGO_HAMMING to avoid adding an extra ecc_algo field + * to s3c2410_platform_nand. */ chip->ecc.algo = NAND_ECC_ALGO_HAMMING; dev_info(info->device, "soft ECC\n"); break; - case NAND_ECC_HW: + case NAND_ECC_ENGINE_TYPE_ON_HOST: chip->ecc.calculate = s3c2410_nand_calculate_ecc; chip->ecc.correct = s3c2410_nand_correct_data; chip->ecc.strength = 1; diff --git a/drivers/mtd/nand/raw/sh_flctl.c b/drivers/mtd/nand/raw/sh_flctl.c index 9dbd6fdbe264..13df4bdf792a 100644 --- a/drivers/mtd/nand/raw/sh_flctl.c +++ b/drivers/mtd/nand/raw/sh_flctl.c @@ -1039,12 +1039,12 @@ static int flctl_chip_attach_chip(struct nand_chip *chip) chip->ecc.strength = 4; chip->ecc.read_page = flctl_read_page_hwecc; chip->ecc.write_page = flctl_write_page_hwecc; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; /* 4 symbols ECC enabled */ flctl->flcmncr_base |= _4ECCEN; } else { - chip->ecc.mode = NAND_ECC_SOFT; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; chip->ecc.algo = NAND_ECC_ALGO_HAMMING; } diff --git a/drivers/mtd/nand/raw/sharpsl.c b/drivers/mtd/nand/raw/sharpsl.c index 51286f7acf54..1327bfb3d5d3 100644 --- a/drivers/mtd/nand/raw/sharpsl.c +++ b/drivers/mtd/nand/raw/sharpsl.c @@ -157,7 +157,7 @@ static int sharpsl_nand_probe(struct platform_device *pdev) /* 15 us command delay time */ this->legacy.chip_delay = 15; /* set eccmode using hardware ECC */ - this->ecc.mode = NAND_ECC_HW; + this->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; this->ecc.size = 256; this->ecc.bytes = 3; this->ecc.strength = 1; diff --git a/drivers/mtd/nand/raw/socrates_nand.c b/drivers/mtd/nand/raw/socrates_nand.c index 72a3a7f98282..0f63ff6f7fe7 100644 --- a/drivers/mtd/nand/raw/socrates_nand.c +++ b/drivers/mtd/nand/raw/socrates_nand.c @@ -153,7 +153,8 @@ static int socrates_nand_probe(struct platform_device *ofdev) nand_chip->legacy.read_buf = socrates_nand_read_buf; nand_chip->legacy.dev_ready = socrates_nand_device_ready; - nand_chip->ecc.mode = NAND_ECC_SOFT; /* enable ECC */ + /* enable ECC */ + nand_chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; nand_chip->ecc.algo = NAND_ECC_ALGO_HAMMING; /* TODO: I have no idea what real delay is. */ diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c index 7f4546ae9130..ba679d2cc743 100644 --- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c +++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c @@ -1696,14 +1696,15 @@ static int stm32_fmc2_nfc_attach_chip(struct nand_chip *chip) int ret; /* - * Only NAND_ECC_HW mode is actually supported + * Only NAND_ECC_ENGINE_TYPE_ON_HOST mode is actually supported * Hamming => ecc.strength = 1 * BCH4 => ecc.strength = 4 * BCH8 => ecc.strength = 8 * ECC sector size = 512 */ - if (chip->ecc.mode != NAND_ECC_HW) { - dev_err(nfc->dev, "nand_ecc_mode is not well defined in the DT\n"); + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) { + dev_err(nfc->dev, + "nand_ecc_engine_type is not well defined in the DT\n"); return -EINVAL; } @@ -1952,7 +1953,7 @@ static int stm32_fmc2_nfc_probe(struct platform_device *pdev) NAND_USES_DMA; /* Default ECC settings */ - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = FMC2_ECC_STEP_SIZE; chip->ecc.strength = FMC2_ECC_BCH8; diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c index 9c50c2b965e1..c78276de7c37 100644 --- a/drivers/mtd/nand/raw/sunxi_nand.c +++ b/drivers/mtd/nand/raw/sunxi_nand.c @@ -1575,7 +1575,7 @@ static int sunxi_nand_ooblayout_free(struct mtd_info *mtd, int section, * only have 2 bytes available in the first user data * section. */ - if (!section && ecc->mode == NAND_ECC_HW) { + if (!section && ecc->engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) { oobregion->offset = 2; oobregion->length = 2; @@ -1720,11 +1720,11 @@ err: static void sunxi_nand_ecc_cleanup(struct nand_ecc_ctrl *ecc) { - switch (ecc->mode) { - case NAND_ECC_HW: + switch (ecc->engine_type) { + case NAND_ECC_ENGINE_TYPE_ON_HOST: sunxi_nand_hw_ecc_ctrl_cleanup(ecc); break; - case NAND_ECC_NONE: + case NAND_ECC_ENGINE_TYPE_NONE: default: break; } @@ -1752,14 +1752,14 @@ static int sunxi_nand_attach_chip(struct nand_chip *nand) if (!ecc->size || !ecc->strength) return -EINVAL; - switch (ecc->mode) { - case NAND_ECC_HW: + switch (ecc->engine_type) { + case NAND_ECC_ENGINE_TYPE_ON_HOST: ret = sunxi_nand_hw_ecc_ctrl_init(nand, ecc, np); if (ret) return ret; break; - case NAND_ECC_NONE: - case NAND_ECC_SOFT: + case NAND_ECC_ENGINE_TYPE_NONE: + case NAND_ECC_ENGINE_TYPE_SOFT: break; default: return -EINVAL; @@ -1991,7 +1991,7 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc, * Set the ECC mode to the default value in case nothing is specified * in the DT. */ - nand->ecc.mode = NAND_ECC_HW; + nand->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; nand_set_flash_node(nand, np); mtd = nand_to_mtd(nand); diff --git a/drivers/mtd/nand/raw/tango_nand.c b/drivers/mtd/nand/raw/tango_nand.c index 021ceef4ad0a..359187b5a4be 100644 --- a/drivers/mtd/nand/raw/tango_nand.c +++ b/drivers/mtd/nand/raw/tango_nand.c @@ -549,7 +549,7 @@ static int tango_attach_chip(struct nand_chip *chip) { struct nand_ecc_ctrl *ecc = &chip->ecc; - ecc->mode = NAND_ECC_HW; + ecc->engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; ecc->algo = NAND_ECC_ALGO_BCH; ecc->bytes = DIV_ROUND_UP(ecc->strength * FIELD_ORDER, BITS_PER_BYTE); diff --git a/drivers/mtd/nand/raw/tegra_nand.c b/drivers/mtd/nand/raw/tegra_nand.c index 0d6f3c6d6e11..cc72a2de8891 100644 --- a/drivers/mtd/nand/raw/tegra_nand.c +++ b/drivers/mtd/nand/raw/tegra_nand.c @@ -916,7 +916,7 @@ static int tegra_nand_attach_chip(struct nand_chip *chip) if (chip->bbt_options & NAND_BBT_USE_FLASH) chip->bbt_options |= NAND_BBT_NO_OOB; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 512; chip->ecc.steps = mtd->writesize / chip->ecc.size; if (chip->base.eccreq.step_size != 512) { diff --git a/drivers/mtd/nand/raw/tmio_nand.c b/drivers/mtd/nand/raw/tmio_nand.c index 843a8683b737..235a2f7b1bad 100644 --- a/drivers/mtd/nand/raw/tmio_nand.c +++ b/drivers/mtd/nand/raw/tmio_nand.c @@ -410,7 +410,7 @@ static int tmio_probe(struct platform_device *dev) nand_chip->legacy.read_buf = tmio_nand_read_buf; /* set eccmode using hardware ECC */ - nand_chip->ecc.mode = NAND_ECC_HW; + nand_chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; nand_chip->ecc.size = 512; nand_chip->ecc.bytes = 6; nand_chip->ecc.strength = 2; diff --git a/drivers/mtd/nand/raw/txx9ndfmc.c b/drivers/mtd/nand/raw/txx9ndfmc.c index 47d966871445..ef81dce6b5c4 100644 --- a/drivers/mtd/nand/raw/txx9ndfmc.c +++ b/drivers/mtd/nand/raw/txx9ndfmc.c @@ -329,7 +329,7 @@ static int __init txx9ndfmc_probe(struct platform_device *dev) chip->ecc.calculate = txx9ndfmc_calculate_ecc; chip->ecc.correct = txx9ndfmc_correct_data; chip->ecc.hwctl = txx9ndfmc_enable_hwecc; - chip->ecc.mode = NAND_ECC_HW; + chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.strength = 1; chip->legacy.chip_delay = 100; chip->controller = &drvdata->controller; diff --git a/drivers/mtd/nand/raw/vf610_nfc.c b/drivers/mtd/nand/raw/vf610_nfc.c index 7248c5901183..8ee2c1f539c4 100644 --- a/drivers/mtd/nand/raw/vf610_nfc.c +++ b/drivers/mtd/nand/raw/vf610_nfc.c @@ -732,7 +732,7 @@ static void vf610_nfc_init_controller(struct vf610_nfc *nfc) else vf610_nfc_clear(nfc, NFC_FLASH_CONFIG, CONFIG_16BIT); - if (nfc->chip.ecc.mode == NAND_ECC_HW) { + if (nfc->chip.ecc.engine_type == NAND_ECC_ENGINE_TYPE_ON_HOST) { /* Set ECC status offset in SRAM */ vf610_nfc_set_field(nfc, NFC_FLASH_CONFIG, CONFIG_ECC_SRAM_ADDR_MASK, @@ -761,7 +761,7 @@ static int vf610_nfc_attach_chip(struct nand_chip *chip) return -ENXIO; } - if (chip->ecc.mode != NAND_ECC_HW) + if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_ON_HOST) return 0; if (mtd->writesize != PAGE_2K && mtd->oobsize < 64) { diff --git a/drivers/mtd/nand/raw/xway_nand.c b/drivers/mtd/nand/raw/xway_nand.c index b279ed143b8f..f2dbd63a5c1f 100644 --- a/drivers/mtd/nand/raw/xway_nand.c +++ b/drivers/mtd/nand/raw/xway_nand.c @@ -180,7 +180,7 @@ static int xway_nand_probe(struct platform_device *pdev) data->chip.legacy.read_byte = xway_read_byte; data->chip.legacy.chip_delay = 30; - data->chip.ecc.mode = NAND_ECC_SOFT; + data->chip.ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT; data->chip.ecc.algo = NAND_ECC_ALGO_HAMMING; platform_set_drvdata(pdev, data); diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index cfd75a12f802..967b616c50df 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -303,7 +303,7 @@ static const struct nand_ecc_caps __name = { \ /** * struct nand_ecc_ctrl - Control structure for ECC - * @mode: ECC mode + * @engine_type: ECC engine type * @placement: OOB bytes placement * @algo: ECC algorithm * @steps: number of ECC steps per page @@ -356,7 +356,7 @@ static const struct nand_ecc_caps __name = { \ * @write_oob: function to write chip OOB data */ struct nand_ecc_ctrl { - enum nand_ecc_mode mode; + enum nand_ecc_engine_type engine_type; enum nand_ecc_placement placement; enum nand_ecc_algo algo; int steps; diff --git a/include/linux/platform_data/mtd-davinci.h b/include/linux/platform_data/mtd-davinci.h index 6e2b252a4ce6..dd474dd44848 100644 --- a/include/linux/platform_data/mtd-davinci.h +++ b/include/linux/platform_data/mtd-davinci.h @@ -60,15 +60,15 @@ struct davinci_nand_pdata { /* platform_data */ struct mtd_partition *parts; unsigned nr_parts; - /* none == NAND_ECC_NONE (strongly *not* advised!!) - * soft == NAND_ECC_SOFT - * else == NAND_ECC_HW, according to ecc_bits + /* none == NAND_ECC_ENGINE_TYPE_NONE (strongly *not* advised!!) + * soft == NAND_ECC_ENGINE_TYPE_SOFT + * else == NAND_ECC_ENGINE_TYPE_ON_HOST, according to ecc_bits * * All DaVinci-family chips support 1-bit hardware ECC. * Newer ones also support 4-bit ECC, but are awkward * using it with large page chips. */ - enum nand_ecc_mode ecc_mode; + enum nand_ecc_engine_type engine_type; enum nand_ecc_placement ecc_placement; u8 ecc_bits; diff --git a/include/linux/platform_data/mtd-nand-s3c2410.h b/include/linux/platform_data/mtd-nand-s3c2410.h index 08675b16f9e1..25390fc3e795 100644 --- a/include/linux/platform_data/mtd-nand-s3c2410.h +++ b/include/linux/platform_data/mtd-nand-s3c2410.h @@ -49,7 +49,7 @@ struct s3c2410_platform_nand { unsigned int ignore_unset_ecc:1; - enum nand_ecc_mode ecc_mode; + enum nand_ecc_engine_type engine_type; int nr_sets; struct s3c2410_nand_set *sets; From d193792a26c216cb7db3cf12300c9414990fa603 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:51:59 +0200 Subject: [PATCH 11/49] mtd: nand: Create a helper to extract the ECC configuration Despite its current name, the eccreq field actually encodes both the NAND requirements and the final ECC configuration. That works fine when using on-die ECC since those 2 concepts match perfectly, but it starts being a problem as soon as we use on-host ECC engines, where we're not guaranteed to have a perfect match. Let's hide the ECC configuration access behind a helper so we can later split those 2 concepts. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-12-miquel.raynal@bootlin.com --- include/linux/mtd/nand.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 8cf5bdbea782..9cbb41a5541c 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -523,6 +523,16 @@ nanddev_get_memorg(struct nand_device *nand) return &nand->memorg; } +/** + * nanddev_get_ecc_conf() - Extract the ECC configuration from a NAND device + * @nand: NAND device + */ +static inline const struct nand_ecc_props * +nanddev_get_ecc_conf(struct nand_device *nand) +{ + return &nand->eccreq; +} + int nanddev_init(struct nand_device *nand, const struct nand_ops *ops, struct module *owner); void nanddev_cleanup(struct nand_device *nand); From 9a333a72c1d0539be664bf121a68c31e48e10d54 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:00 +0200 Subject: [PATCH 12/49] mtd: spinand: Use nanddev_get_ecc_conf() when relevant Instead of accessing ->strength/step_size directly. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-13-miquel.raynal@bootlin.com --- drivers/mtd/nand/spi/core.c | 6 +++--- drivers/mtd/nand/spi/macronix.c | 7 ++++--- drivers/mtd/nand/spi/toshiba.c | 6 +++--- 3 files changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index 4725d390c87c..13c613104ef3 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -419,7 +419,7 @@ static int spinand_check_ecc_status(struct spinand_device *spinand, u8 status) * fixed, so let's return the maximum possible value so that * wear-leveling layers move the data immediately. */ - return nand->eccreq.strength; + return nanddev_get_ecc_conf(nand)->strength; case STATUS_ECC_UNCOR_ERROR: return -EBADMSG; @@ -1090,8 +1090,8 @@ static int spinand_init(struct spinand_device *spinand) mtd->oobavail = ret; /* Propagate ECC information to mtd_info */ - mtd->ecc_strength = nand->eccreq.strength; - mtd->ecc_step_size = nand->eccreq.step_size; + mtd->ecc_strength = nanddev_get_ecc_conf(nand)->strength; + mtd->ecc_step_size = nanddev_get_ecc_conf(nand)->step_size; return 0; diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c index 0f900f3aa21a..9ff8debd5994 100644 --- a/drivers/mtd/nand/spi/macronix.c +++ b/drivers/mtd/nand/spi/macronix.c @@ -84,10 +84,11 @@ static int mx35lf1ge4ab_ecc_get_status(struct spinand_device *spinand, * data around if it's not necessary. */ if (mx35lf1ge4ab_get_eccsr(spinand, &eccsr)) - return nand->eccreq.strength; + return nanddev_get_ecc_conf(nand)->strength; - if (WARN_ON(eccsr > nand->eccreq.strength || !eccsr)) - return nand->eccreq.strength; + if (WARN_ON(eccsr > nanddev_get_ecc_conf(nand)->strength || + !eccsr)) + return nanddev_get_ecc_conf(nand)->strength; return eccsr; diff --git a/drivers/mtd/nand/spi/toshiba.c b/drivers/mtd/nand/spi/toshiba.c index bc801d83343e..21fde2875674 100644 --- a/drivers/mtd/nand/spi/toshiba.c +++ b/drivers/mtd/nand/spi/toshiba.c @@ -90,12 +90,12 @@ static int tx58cxgxsxraix_ecc_get_status(struct spinand_device *spinand, * data around if it's not necessary. */ if (spi_mem_exec_op(spinand->spimem, &op)) - return nand->eccreq.strength; + return nanddev_get_ecc_conf(nand)->strength; mbf >>= 4; - if (WARN_ON(mbf > nand->eccreq.strength || !mbf)) - return nand->eccreq.strength; + if (WARN_ON(mbf > nanddev_get_ecc_conf(nand)->strength || !mbf)) + return nanddev_get_ecc_conf(nand)->strength; return mbf; From 3316c8e3ad1fcaeefd4ffa93587dd78fb24e8afa Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:01 +0200 Subject: [PATCH 13/49] mtd: nand: Create helpers to set/extract the ECC requirements Despite its current name, the eccreq field actually encodes both the NAND requirements and the final ECC configuration. That works fine when using on-die ECC since those 2 concepts match perfectly, but it starts being a problem as soon as we use on-host ECC engines, where we're not guaranteed to have a perfect match. Let's hide the ECC requirements access behind helpers so we can later split those 2 concepts. As the structures have not been clarified yet, these helpers access the same internal variable as nanddev_get_ecc_conf() for now. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-14-miquel.raynal@bootlin.com --- include/linux/mtd/nand.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 9cbb41a5541c..348fb2ad4d90 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -533,6 +533,30 @@ nanddev_get_ecc_conf(struct nand_device *nand) return &nand->eccreq; } +/** + * nanddev_get_ecc_requirements() - Extract the ECC requirements from a NAND + * device + * @nand: NAND device + */ +static inline const struct nand_ecc_props * +nanddev_get_ecc_requirements(struct nand_device *nand) +{ + return &nand->eccreq; +} + +/** + * nanddev_set_ecc_requirements() - Assign the ECC requirements of a NAND + * device + * @nand: NAND device + * @reqs: Requirements + */ +static inline void +nanddev_set_ecc_requirements(struct nand_device *nand, + const struct nand_ecc_props *reqs) +{ + nand->eccreq = *reqs; +} + int nanddev_init(struct nand_device *nand, const struct nand_ops *ops, struct module *owner); void nanddev_cleanup(struct nand_device *nand); From 53576c7bfc3589fc7cd58cc952168db0449886a7 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:02 +0200 Subject: [PATCH 14/49] mtd: rawnand: Use nanddev_get/set_ecc_requirements() when relevant Instead of accessing ->strength/step_size directly. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-15-miquel.raynal@bootlin.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 10 +++-- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 8 ++-- drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 13 +++--- drivers/mtd/nand/raw/marvell_nand.c | 8 ++-- drivers/mtd/nand/raw/mtk_nand.c | 6 ++- drivers/mtd/nand/raw/nand_base.c | 27 +++++++----- drivers/mtd/nand/raw/nand_esmt.c | 15 ++++--- drivers/mtd/nand/raw/nand_hynix.c | 44 +++++++++++--------- drivers/mtd/nand/raw/nand_jedec.c | 9 +++- drivers/mtd/nand/raw/nand_micron.c | 17 +++++--- drivers/mtd/nand/raw/nand_onfi.c | 17 ++++++-- drivers/mtd/nand/raw/nand_samsung.c | 22 ++++++---- drivers/mtd/nand/raw/nand_toshiba.c | 14 ++++--- drivers/mtd/nand/raw/sunxi_nand.c | 6 ++- drivers/mtd/nand/raw/tegra_nand.c | 12 ++++-- drivers/mtd/nand/spi/core.c | 2 +- 16 files changed, 144 insertions(+), 86 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 0d9cd7faf00d..3d162fdc9ce2 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -1043,6 +1043,8 @@ static int atmel_hsmc_nand_pmecc_read_page_raw(struct nand_chip *chip, static int atmel_nand_pmecc_init(struct nand_chip *chip) { + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); struct mtd_info *mtd = nand_to_mtd(chip); struct atmel_nand *nand = to_atmel_nand(chip); struct atmel_nand_controller *nc; @@ -1072,15 +1074,15 @@ static int atmel_nand_pmecc_init(struct nand_chip *chip) req.ecc.strength = ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH; else if (chip->ecc.strength) req.ecc.strength = chip->ecc.strength; - else if (chip->base.eccreq.strength) - req.ecc.strength = chip->base.eccreq.strength; + else if (requirements->strength) + req.ecc.strength = requirements->strength; else req.ecc.strength = ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH; if (chip->ecc.size) req.ecc.sectorsize = chip->ecc.size; - else if (chip->base.eccreq.step_size) - req.ecc.sectorsize = chip->base.eccreq.step_size; + else if (requirements->step_size) + req.ecc.sectorsize = requirements->step_size; else req.ecc.sectorsize = ATMEL_PMECC_SECTOR_SIZE_AUTO; diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index afe27a27cb93..2da39ab89286 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -2532,6 +2532,8 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) { struct mtd_info *mtd = nand_to_mtd(&host->chip); struct nand_chip *chip = &host->chip; + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); struct brcmnand_controller *ctrl = host->ctrl; struct brcmnand_cfg *cfg = &host->hwcfg; char msg[128]; @@ -2589,10 +2591,10 @@ static int brcmnand_setup_dev(struct brcmnand_host *host) if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_NONE && (!chip->ecc.size || !chip->ecc.strength)) { - if (chip->base.eccreq.step_size && chip->base.eccreq.strength) { + if (requirements->step_size && requirements->strength) { /* use detected ECC parameters */ - chip->ecc.size = chip->base.eccreq.step_size; - chip->ecc.strength = chip->base.eccreq.strength; + chip->ecc.size = requirements->step_size; + chip->ecc.strength = requirements->strength; dev_info(ctrl->dev, "Using ECC step-size %d, strength %d\n", chip->ecc.size, chip->ecc.strength); } diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c index 9b015d360a50..86dc83d0de8e 100644 --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c @@ -272,8 +272,8 @@ static int set_geometry_by_ecc_info(struct gpmi_nand_data *this, default: dev_err(this->dev, "unsupported nand chip. ecc bits : %d, ecc size : %d\n", - chip->base.eccreq.strength, - chip->base.eccreq.step_size); + nanddev_get_ecc_requirements(&chip->base)->strength, + nanddev_get_ecc_requirements(&chip->base)->step_size); return -EINVAL; } geo->ecc_chunk_size = ecc_step; @@ -510,6 +510,8 @@ static int legacy_set_geometry(struct gpmi_nand_data *this) static int common_nfc_set_geometry(struct gpmi_nand_data *this) { struct nand_chip *chip = &this->nand; + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); if (chip->ecc.strength > 0 && chip->ecc.size > 0) return set_geometry_by_ecc_info(this, chip->ecc.strength, @@ -517,13 +519,12 @@ static int common_nfc_set_geometry(struct gpmi_nand_data *this) if ((of_property_read_bool(this->dev->of_node, "fsl,use-minimum-ecc")) || legacy_set_geometry(this)) { - if (!(chip->base.eccreq.strength > 0 && - chip->base.eccreq.step_size > 0)) + if (!(requirements->strength > 0 && requirements->step_size > 0)) return -EINVAL; return set_geometry_by_ecc_info(this, - chip->base.eccreq.strength, - chip->base.eccreq.step_size); + requirements->strength, + requirements->step_size); } return 0; diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c index 88f8ed051226..f7ff8e93a249 100644 --- a/drivers/mtd/nand/raw/marvell_nand.c +++ b/drivers/mtd/nand/raw/marvell_nand.c @@ -2247,14 +2247,16 @@ static int marvell_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc) { struct nand_chip *chip = mtd_to_nand(mtd); + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); struct marvell_nfc *nfc = to_marvell_nfc(chip->controller); int ret; if (ecc->engine_type != NAND_ECC_ENGINE_TYPE_NONE && (!ecc->size || !ecc->strength)) { - if (chip->base.eccreq.step_size && chip->base.eccreq.strength) { - ecc->size = chip->base.eccreq.step_size; - ecc->strength = chip->base.eccreq.strength; + if (requirements->step_size && requirements->strength) { + ecc->size = requirements->step_size; + ecc->strength = requirements->strength; } else { dev_info(nfc->dev, "No minimum ECC strength, using 1b/512B\n"); diff --git a/drivers/mtd/nand/raw/mtk_nand.c b/drivers/mtd/nand/raw/mtk_nand.c index 42966fe22d8b..57f1f1708994 100644 --- a/drivers/mtd/nand/raw/mtk_nand.c +++ b/drivers/mtd/nand/raw/mtk_nand.c @@ -1253,6 +1253,8 @@ static int mtk_nfc_set_spare_per_sector(u32 *sps, struct mtd_info *mtd) static int mtk_nfc_ecc_init(struct device *dev, struct mtd_info *mtd) { struct nand_chip *nand = mtd_to_nand(mtd); + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&nand->base); struct mtk_nfc *nfc = nand_get_controller_data(nand); u32 spare; int free, ret; @@ -1266,8 +1268,8 @@ static int mtk_nfc_ecc_init(struct device *dev, struct mtd_info *mtd) /* if optional dt settings not present */ if (!nand->ecc.size || !nand->ecc.strength) { /* use datasheet requirements */ - nand->ecc.strength = nand->base.eccreq.strength; - nand->ecc.size = nand->base.eccreq.step_size; + nand->ecc.strength = requirements->strength; + nand->ecc.size = requirements->step_size; /* * align eccstrength and eccsize diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 4b406b0f783c..002d6397cfd7 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4750,6 +4750,8 @@ static inline bool is_full_id_nand(struct nand_flash_dev *type) static bool find_full_id_nand(struct nand_chip *chip, struct nand_flash_dev *type) { + struct nand_device *base = &chip->base; + struct nand_ecc_props requirements; struct mtd_info *mtd = nand_to_mtd(chip); struct nand_memory_organization *memorg; u8 *id_data = chip->id.data; @@ -4771,8 +4773,9 @@ static bool find_full_id_nand(struct nand_chip *chip, memorg->pagesize * memorg->pages_per_eraseblock); chip->options |= type->options; - chip->base.eccreq.strength = NAND_ECC_STRENGTH(type); - chip->base.eccreq.step_size = NAND_ECC_STEP(type); + requirements.strength = NAND_ECC_STRENGTH(type); + requirements.step_size = NAND_ECC_STEP(type); + nanddev_set_ecc_requirements(base, &requirements); chip->parameters.model = kstrdup(type->name, GFP_KERNEL); if (!chip->parameters.model) @@ -5472,10 +5475,12 @@ static int nand_match_ecc_req(struct nand_chip *chip, const struct nand_ecc_caps *caps, int oobavail) { + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); struct mtd_info *mtd = nand_to_mtd(chip); const struct nand_ecc_step_info *stepinfo; - int req_step = chip->base.eccreq.step_size; - int req_strength = chip->base.eccreq.strength; + int req_step = requirements->step_size; + int req_strength = requirements->strength; int req_corr, step_size, strength, nsteps, ecc_bytes, ecc_bytes_total; int best_step, best_strength, best_ecc_bytes; int best_ecc_bytes_total = INT_MAX; @@ -5666,9 +5671,11 @@ static bool nand_ecc_strength_good(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); struct nand_ecc_ctrl *ecc = &chip->ecc; + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); int corr, ds_corr; - if (ecc->size == 0 || chip->base.eccreq.step_size == 0) + if (ecc->size == 0 || requirements->step_size == 0) /* Not enough information */ return true; @@ -5677,10 +5684,10 @@ static bool nand_ecc_strength_good(struct nand_chip *chip) * the correction density. */ corr = (mtd->writesize * ecc->strength) / ecc->size; - ds_corr = (mtd->writesize * chip->base.eccreq.strength) / - chip->base.eccreq.step_size; + ds_corr = (mtd->writesize * requirements->strength) / + requirements->step_size; - return corr >= ds_corr && ecc->strength >= chip->base.eccreq.strength; + return corr >= ds_corr && ecc->strength >= requirements->strength; } static int rawnand_erase(struct nand_device *nand, const struct nand_pos *pos) @@ -5967,8 +5974,8 @@ static int nand_scan_tail(struct nand_chip *chip) if (!nand_ecc_strength_good(chip)) pr_warn("WARNING: %s: the ECC used on your system (%db/%dB) is too weak compared to the one required by the NAND chip (%db/%dB)\n", mtd->name, chip->ecc.strength, chip->ecc.size, - chip->base.eccreq.strength, - chip->base.eccreq.step_size); + nanddev_get_ecc_requirements(&chip->base)->strength, + nanddev_get_ecc_requirements(&chip->base)->step_size); /* Allow subpage writes up to ecc.steps. Not possible for MLC flash */ if (!(chip->options & NAND_NO_SUBPAGE_WRITE) && nand_is_slc(chip)) { diff --git a/drivers/mtd/nand/raw/nand_esmt.c b/drivers/mtd/nand/raw/nand_esmt.c index 3338c68aaaf1..4412c407aef3 100644 --- a/drivers/mtd/nand/raw/nand_esmt.c +++ b/drivers/mtd/nand/raw/nand_esmt.c @@ -10,27 +10,32 @@ static void esmt_nand_decode_id(struct nand_chip *chip) { + struct nand_device *base = &chip->base; + struct nand_ecc_props requirements = {}; + nand_decode_ext_id(chip); /* Extract ECC requirements from 5th id byte. */ if (chip->id.len >= 5 && nand_is_slc(chip)) { - chip->base.eccreq.step_size = 512; + requirements.step_size = 512; switch (chip->id.data[4] & 0x3) { case 0x0: - chip->base.eccreq.strength = 4; + requirements.strength = 4; break; case 0x1: - chip->base.eccreq.strength = 2; + requirements.strength = 2; break; case 0x2: - chip->base.eccreq.strength = 1; + requirements.strength = 1; break; default: WARN(1, "Could not get ECC info"); - chip->base.eccreq.step_size = 0; + requirements.step_size = 0; break; } } + + nanddev_set_ecc_requirements(base, &requirements); } static int esmt_nand_init(struct nand_chip *chip) diff --git a/drivers/mtd/nand/raw/nand_hynix.c b/drivers/mtd/nand/raw/nand_hynix.c index 6d08eb834456..a9f50c9af109 100644 --- a/drivers/mtd/nand/raw/nand_hynix.c +++ b/drivers/mtd/nand/raw/nand_hynix.c @@ -495,34 +495,36 @@ static void hynix_nand_extract_oobsize(struct nand_chip *chip, static void hynix_nand_extract_ecc_requirements(struct nand_chip *chip, bool valid_jedecid) { + struct nand_device *base = &chip->base; + struct nand_ecc_props requirements = {}; u8 ecc_level = (chip->id.data[4] >> 4) & 0x7; if (valid_jedecid) { /* Reference: H27UCG8T2E datasheet */ - chip->base.eccreq.step_size = 1024; + requirements.step_size = 1024; switch (ecc_level) { case 0: - chip->base.eccreq.step_size = 0; - chip->base.eccreq.strength = 0; + requirements.step_size = 0; + requirements.strength = 0; break; case 1: - chip->base.eccreq.strength = 4; + requirements.strength = 4; break; case 2: - chip->base.eccreq.strength = 24; + requirements.strength = 24; break; case 3: - chip->base.eccreq.strength = 32; + requirements.strength = 32; break; case 4: - chip->base.eccreq.strength = 40; + requirements.strength = 40; break; case 5: - chip->base.eccreq.strength = 50; + requirements.strength = 50; break; case 6: - chip->base.eccreq.strength = 60; + requirements.strength = 60; break; default: /* @@ -543,14 +545,14 @@ static void hynix_nand_extract_ecc_requirements(struct nand_chip *chip, if (nand_tech < 3) { /* > 26nm, reference: H27UBG8T2A datasheet */ if (ecc_level < 5) { - chip->base.eccreq.step_size = 512; - chip->base.eccreq.strength = 1 << ecc_level; + requirements.step_size = 512; + requirements.strength = 1 << ecc_level; } else if (ecc_level < 7) { if (ecc_level == 5) - chip->base.eccreq.step_size = 2048; + requirements.step_size = 2048; else - chip->base.eccreq.step_size = 1024; - chip->base.eccreq.strength = 24; + requirements.step_size = 1024; + requirements.strength = 24; } else { /* * We should never reach this case, but if that @@ -563,18 +565,20 @@ static void hynix_nand_extract_ecc_requirements(struct nand_chip *chip, } else { /* <= 26nm, reference: H27UBG8T2B datasheet */ if (!ecc_level) { - chip->base.eccreq.step_size = 0; - chip->base.eccreq.strength = 0; + requirements.step_size = 0; + requirements.strength = 0; } else if (ecc_level < 5) { - chip->base.eccreq.step_size = 512; - chip->base.eccreq.strength = 1 << (ecc_level - 1); + requirements.step_size = 512; + requirements.strength = 1 << (ecc_level - 1); } else { - chip->base.eccreq.step_size = 1024; - chip->base.eccreq.strength = 24 + + requirements.step_size = 1024; + requirements.strength = 24 + (8 * (ecc_level - 5)); } } } + + nanddev_set_ecc_requirements(base, &requirements); } static void hynix_nand_extract_scrambling_requirements(struct nand_chip *chip, diff --git a/drivers/mtd/nand/raw/nand_jedec.c b/drivers/mtd/nand/raw/nand_jedec.c index b15c42f48755..85b6d9372d80 100644 --- a/drivers/mtd/nand/raw/nand_jedec.c +++ b/drivers/mtd/nand/raw/nand_jedec.c @@ -23,6 +23,7 @@ */ int nand_jedec_detect(struct nand_chip *chip) { + struct nand_device *base = &chip->base; struct mtd_info *mtd = nand_to_mtd(chip); struct nand_memory_organization *memorg; struct nand_jedec_params *p; @@ -120,8 +121,12 @@ int nand_jedec_detect(struct nand_chip *chip) ecc = &p->ecc_info[0]; if (ecc->codeword_size >= 9) { - chip->base.eccreq.strength = ecc->ecc_bits; - chip->base.eccreq.step_size = 1 << ecc->codeword_size; + struct nand_ecc_props requirements = { + .strength = ecc->ecc_bits, + .step_size = 1 << ecc->codeword_size, + }; + + nanddev_set_ecc_requirements(base, &requirements); } else { pr_warn("Invalid codeword size\n"); } diff --git a/drivers/mtd/nand/raw/nand_micron.c b/drivers/mtd/nand/raw/nand_micron.c index c43afaf21482..c0192881906b 100644 --- a/drivers/mtd/nand/raw/nand_micron.c +++ b/drivers/mtd/nand/raw/nand_micron.c @@ -413,6 +413,8 @@ enum { */ static int micron_supports_on_die_ecc(struct nand_chip *chip) { + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); u8 id[5]; int ret; @@ -425,7 +427,7 @@ static int micron_supports_on_die_ecc(struct nand_chip *chip) /* * We only support on-die ECC of 4/512 or 8/512 */ - if (chip->base.eccreq.strength != 4 && chip->base.eccreq.strength != 8) + if (requirements->strength != 4 && requirements->strength != 8) return MICRON_ON_DIE_UNSUPPORTED; /* 0x2 means on-die ECC is available. */ @@ -466,7 +468,7 @@ static int micron_supports_on_die_ecc(struct nand_chip *chip) /* * We only support on-die ECC of 4/512 or 8/512 */ - if (chip->base.eccreq.strength != 4 && chip->base.eccreq.strength != 8) + if (requirements->strength != 4 && requirements->strength != 8) return MICRON_ON_DIE_UNSUPPORTED; return MICRON_ON_DIE_SUPPORTED; @@ -474,6 +476,9 @@ static int micron_supports_on_die_ecc(struct nand_chip *chip) static int micron_nand_init(struct nand_chip *chip) { + struct nand_device *base = &chip->base; + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(base); struct mtd_info *mtd = nand_to_mtd(chip); struct micron_nand *micron; int ondie; @@ -523,7 +528,7 @@ static int micron_nand_init(struct nand_chip *chip) * That's not needed for 8-bit ECC, because the status expose * a better approximation of the number of bitflips in a page. */ - if (chip->base.eccreq.strength == 4) { + if (requirements->strength == 4) { micron->ecc.rawbuf = kmalloc(mtd->writesize + mtd->oobsize, GFP_KERNEL); @@ -533,16 +538,16 @@ static int micron_nand_init(struct nand_chip *chip) } } - if (chip->base.eccreq.strength == 4) + if (requirements->strength == 4) mtd_set_ooblayout(mtd, µn_nand_on_die_4_ooblayout_ops); else mtd_set_ooblayout(mtd, µn_nand_on_die_8_ooblayout_ops); - chip->ecc.bytes = chip->base.eccreq.strength * 2; + chip->ecc.bytes = requirements->strength * 2; chip->ecc.size = 512; - chip->ecc.strength = chip->base.eccreq.strength; + chip->ecc.strength = requirements->strength; chip->ecc.algo = NAND_ECC_ALGO_BCH; chip->ecc.read_page = micron_nand_read_page_on_die_ecc; chip->ecc.write_page = micron_nand_write_page_on_die_ecc; diff --git a/drivers/mtd/nand/raw/nand_onfi.c b/drivers/mtd/nand/raw/nand_onfi.c index be3456627288..45649e03797d 100644 --- a/drivers/mtd/nand/raw/nand_onfi.c +++ b/drivers/mtd/nand/raw/nand_onfi.c @@ -34,6 +34,8 @@ u16 onfi_crc16(u16 crc, u8 const *p, size_t len) static int nand_flash_detect_ext_param_page(struct nand_chip *chip, struct nand_onfi_params *p) { + struct nand_device *base = &chip->base; + struct nand_ecc_props requirements; struct onfi_ext_param_page *ep; struct onfi_ext_section *s; struct onfi_ext_ecc_info *ecc; @@ -94,8 +96,10 @@ static int nand_flash_detect_ext_param_page(struct nand_chip *chip, goto ext_out; } - chip->base.eccreq.strength = ecc->ecc_bits; - chip->base.eccreq.step_size = 1 << ecc->codeword_size; + requirements.strength = ecc->ecc_bits; + requirements.step_size = 1 << ecc->codeword_size; + nanddev_set_ecc_requirements(base, &requirements); + ret = 0; ext_out: @@ -139,6 +143,7 @@ static void nand_bit_wise_majority(const void **srcbufs, */ int nand_onfi_detect(struct nand_chip *chip) { + struct nand_device *base = &chip->base; struct mtd_info *mtd = nand_to_mtd(chip); struct nand_memory_organization *memorg; struct nand_onfi_params *p = NULL, *pbuf; @@ -265,8 +270,12 @@ int nand_onfi_detect(struct nand_chip *chip) chip->options |= NAND_BUSWIDTH_16; if (p->ecc_bits != 0xff) { - chip->base.eccreq.strength = p->ecc_bits; - chip->base.eccreq.step_size = 512; + struct nand_ecc_props requirements = { + .strength = p->ecc_bits, + .step_size = 512, + }; + + nanddev_set_ecc_requirements(base, &requirements); } else if (onfi_version >= 21 && (le16_to_cpu(p->features) & ONFI_FEATURE_EXT_PARAM_PAGE)) { diff --git a/drivers/mtd/nand/raw/nand_samsung.c b/drivers/mtd/nand/raw/nand_samsung.c index 3a4a19e808f6..0be6b7563805 100644 --- a/drivers/mtd/nand/raw/nand_samsung.c +++ b/drivers/mtd/nand/raw/nand_samsung.c @@ -10,6 +10,8 @@ static void samsung_nand_decode_id(struct nand_chip *chip) { + struct nand_device *base = &chip->base; + struct nand_ecc_props requirements = {}; struct mtd_info *mtd = nand_to_mtd(chip); struct nand_memory_organization *memorg; @@ -71,23 +73,23 @@ static void samsung_nand_decode_id(struct nand_chip *chip) /* Extract ECC requirements from 5th id byte*/ extid = (chip->id.data[4] >> 4) & 0x07; if (extid < 5) { - chip->base.eccreq.step_size = 512; - chip->base.eccreq.strength = 1 << extid; + requirements.step_size = 512; + requirements.strength = 1 << extid; } else { - chip->base.eccreq.step_size = 1024; + requirements.step_size = 1024; switch (extid) { case 5: - chip->base.eccreq.strength = 24; + requirements.strength = 24; break; case 6: - chip->base.eccreq.strength = 40; + requirements.strength = 40; break; case 7: - chip->base.eccreq.strength = 60; + requirements.strength = 60; break; default: WARN(1, "Could not decode ECC info"); - chip->base.eccreq.step_size = 0; + requirements.step_size = 0; } } } else { @@ -97,8 +99,8 @@ static void samsung_nand_decode_id(struct nand_chip *chip) switch (chip->id.data[1]) { /* K9F4G08U0D-S[I|C]B0(T00) */ case 0xDC: - chip->base.eccreq.step_size = 512; - chip->base.eccreq.strength = 1; + requirements.step_size = 512; + requirements.strength = 1; break; /* K9F1G08U0E 21nm chips do not support subpage write */ @@ -112,6 +114,8 @@ static void samsung_nand_decode_id(struct nand_chip *chip) } } } + + nanddev_set_ecc_requirements(base, &requirements); } static int samsung_nand_init(struct nand_chip *chip) diff --git a/drivers/mtd/nand/raw/nand_toshiba.c b/drivers/mtd/nand/raw/nand_toshiba.c index 7ba0516c6247..fb6662337b90 100644 --- a/drivers/mtd/nand/raw/nand_toshiba.c +++ b/drivers/mtd/nand/raw/nand_toshiba.c @@ -145,6 +145,8 @@ static void toshiba_nand_benand_init(struct nand_chip *chip) static void toshiba_nand_decode_id(struct nand_chip *chip) { + struct nand_device *base = &chip->base; + struct nand_ecc_props requirements = {}; struct mtd_info *mtd = nand_to_mtd(chip); struct nand_memory_organization *memorg; @@ -175,23 +177,25 @@ static void toshiba_nand_decode_id(struct nand_chip *chip) * - 24nm: 8 bit ECC for each 512Byte is required. */ if (chip->id.len >= 6 && nand_is_slc(chip)) { - chip->base.eccreq.step_size = 512; + requirements.step_size = 512; switch (chip->id.data[5] & 0x7) { case 0x4: - chip->base.eccreq.strength = 1; + requirements.strength = 1; break; case 0x5: - chip->base.eccreq.strength = 4; + requirements.strength = 4; break; case 0x6: - chip->base.eccreq.strength = 8; + requirements.strength = 8; break; default: WARN(1, "Could not get ECC info"); - chip->base.eccreq.step_size = 0; + requirements.step_size = 0; break; } } + + nanddev_set_ecc_requirements(base, &requirements); } static int diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c index c78276de7c37..b7b764ef4b1d 100644 --- a/drivers/mtd/nand/raw/sunxi_nand.c +++ b/drivers/mtd/nand/raw/sunxi_nand.c @@ -1732,6 +1732,8 @@ static void sunxi_nand_ecc_cleanup(struct nand_ecc_ctrl *ecc) static int sunxi_nand_attach_chip(struct nand_chip *nand) { + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&nand->base); struct nand_ecc_ctrl *ecc = &nand->ecc; struct device_node *np = nand_get_flash_node(nand); int ret; @@ -1745,8 +1747,8 @@ static int sunxi_nand_attach_chip(struct nand_chip *nand) nand->options |= NAND_SUBPAGE_READ; if (!ecc->size) { - ecc->size = nand->base.eccreq.step_size; - ecc->strength = nand->base.eccreq.strength; + ecc->size = requirements->step_size; + ecc->strength = requirements->strength; } if (!ecc->size || !ecc->strength) diff --git a/drivers/mtd/nand/raw/tegra_nand.c b/drivers/mtd/nand/raw/tegra_nand.c index cc72a2de8891..100c18ef8fe8 100644 --- a/drivers/mtd/nand/raw/tegra_nand.c +++ b/drivers/mtd/nand/raw/tegra_nand.c @@ -840,6 +840,8 @@ static int tegra_nand_get_strength(struct nand_chip *chip, const int *strength, int strength_len, int bits_per_step, int oobsize) { + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); bool maximize = chip->ecc.options & NAND_ECC_MAXIMIZE; int i; @@ -855,7 +857,7 @@ static int tegra_nand_get_strength(struct nand_chip *chip, const int *strength, } else { strength_sel = strength[i]; - if (strength_sel < chip->base.eccreq.strength) + if (strength_sel < requirements->strength) continue; } @@ -908,6 +910,8 @@ static int tegra_nand_select_strength(struct nand_chip *chip, int oobsize) static int tegra_nand_attach_chip(struct nand_chip *chip) { struct tegra_nand_controller *ctrl = to_tegra_ctrl(chip->controller); + const struct nand_ecc_props *requirements = + nanddev_get_ecc_requirements(&chip->base); struct tegra_nand_chip *nand = to_tegra_chip(chip); struct mtd_info *mtd = nand_to_mtd(chip); int bits_per_step; @@ -919,9 +923,9 @@ static int tegra_nand_attach_chip(struct nand_chip *chip) chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; chip->ecc.size = 512; chip->ecc.steps = mtd->writesize / chip->ecc.size; - if (chip->base.eccreq.step_size != 512) { + if (requirements->step_size != 512) { dev_err(ctrl->dev, "Unsupported step size %d\n", - chip->base.eccreq.step_size); + requirements->step_size); return -EINVAL; } @@ -952,7 +956,7 @@ static int tegra_nand_attach_chip(struct nand_chip *chip) if (ret < 0) { dev_err(ctrl->dev, "No valid strength found, minimum %d\n", - chip->base.eccreq.strength); + requirements->strength); return ret; } diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index 13c613104ef3..c35221794645 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -902,7 +902,7 @@ int spinand_match_and_init(struct spinand_device *spinand, continue; nand->memorg = table[i].memorg; - nand->eccreq = table[i].eccreq; + nanddev_set_ecc_requirements(nand, &table[i].eccreq); spinand->eccinfo = table[i].eccinfo; spinand->flags = table[i].flags; spinand->id.len = 1 + table[i].devid.len; From 93ef92f6f42275e3d6070b1c5020bfca0e614fff Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:03 +0200 Subject: [PATCH 15/49] mtd: nand: Use the new generic ECC object Embed a generic NAND ECC high-level object in the nand_device structure to carry all the ECC engine configuration/data. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-16-miquel.raynal@bootlin.com --- include/linux/mtd/nand.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 348fb2ad4d90..697ea2474a7c 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -301,7 +301,7 @@ struct nand_ecc { * struct nand_device - NAND device * @mtd: MTD instance attached to the NAND device * @memorg: memory layout - * @eccreq: ECC requirements + * @ecc: NAND ECC object attached to the NAND device * @rowconv: position to row address converter * @bbt: bad block table info * @ops: NAND operations attached to the NAND device @@ -309,8 +309,8 @@ struct nand_ecc { * Generic NAND object. Specialized NAND layers (raw NAND, SPI NAND, OneNAND) * should declare their own NAND object embedding a nand_device struct (that's * how inheritance is done). - * struct_nand_device->memorg and struct_nand_device->eccreq should be filled - * at device detection time to reflect the NAND device + * struct_nand_device->memorg and struct_nand_device->ecc.requirements should + * be filled at device detection time to reflect the NAND device * capabilities/requirements. Once this is done nanddev_init() can be called. * It will take care of converting NAND information into MTD ones, which means * the specialized NAND layers should never manually tweak @@ -319,7 +319,7 @@ struct nand_ecc { struct nand_device { struct mtd_info mtd; struct nand_memory_organization memorg; - struct nand_ecc_props eccreq; + struct nand_ecc ecc; struct nand_row_converter rowconv; struct nand_bbt bbt; const struct nand_ops *ops; @@ -530,7 +530,7 @@ nanddev_get_memorg(struct nand_device *nand) static inline const struct nand_ecc_props * nanddev_get_ecc_conf(struct nand_device *nand) { - return &nand->eccreq; + return &nand->ecc.ctx.conf; } /** @@ -541,7 +541,7 @@ nanddev_get_ecc_conf(struct nand_device *nand) static inline const struct nand_ecc_props * nanddev_get_ecc_requirements(struct nand_device *nand) { - return &nand->eccreq; + return &nand->ecc.requirements; } /** @@ -554,7 +554,7 @@ static inline void nanddev_set_ecc_requirements(struct nand_device *nand, const struct nand_ecc_props *reqs) { - nand->eccreq = *reqs; + nand->ecc.requirements = *reqs; } int nanddev_init(struct nand_device *nand, const struct nand_ops *ops, From c441bcd31266dc403beb6f2c2f095696a1be5325 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:04 +0200 Subject: [PATCH 16/49] mtd: rawnand: Make use of the ECC framework Just enable the ECC framework with raw NAND so that we can drop, one by one, all the unnecessary/redundant definitions. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-17-miquel.raynal@bootlin.com --- drivers/mtd/nand/raw/Kconfig | 1 + drivers/mtd/nand/raw/nand_base.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig index 1203775023ad..6c46f25b57e2 100644 --- a/drivers/mtd/nand/raw/Kconfig +++ b/drivers/mtd/nand/raw/Kconfig @@ -13,6 +13,7 @@ config MTD_NAND_ECC_SW_HAMMING_SMC menuconfig MTD_RAW_NAND tristate "Raw/Parallel NAND Device Support" select MTD_NAND_CORE + select MTD_NAND_ECC select MTD_NAND_ECC_SW_HAMMING help This enables support for accessing all type of raw/parallel diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 002d6397cfd7..2c102aeecdc1 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include #include From 1e3b37aab958861a9d0c01ff6dbec96a82743701 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:05 +0200 Subject: [PATCH 17/49] mtd: rawnand: Use the ECC framework OOB layouts No need to have our own in the raw NAND core. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-18-miquel.raynal@bootlin.com --- drivers/mtd/nand/raw/arasan-nand-controller.c | 2 +- drivers/mtd/nand/raw/atmel/nand-controller.c | 2 +- drivers/mtd/nand/raw/davinci_nand.c | 3 +- .../mtd/nand/raw/ingenic/ingenic_nand_drv.c | 6 +- drivers/mtd/nand/raw/nand_base.c | 174 +----------------- drivers/mtd/nand/raw/nand_bch.c | 1 + drivers/mtd/nand/raw/nand_toshiba.c | 2 +- drivers/mtd/nand/raw/vf610_nfc.c | 2 +- include/linux/mtd/rawnand.h | 4 +- 9 files changed, 20 insertions(+), 176 deletions(-) diff --git a/drivers/mtd/nand/raw/arasan-nand-controller.c b/drivers/mtd/nand/raw/arasan-nand-controller.c index 006bc3d3ce20..fbb4ea751be8 100644 --- a/drivers/mtd/nand/raw/arasan-nand-controller.c +++ b/drivers/mtd/nand/raw/arasan-nand-controller.c @@ -980,7 +980,7 @@ static int anfc_init_hw_ecc_controller(struct arasan_nfc *nfc, return -EINVAL; } - mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); + mtd_set_ooblayout(mtd, nand_get_large_page_ooblayout()); ecc->steps = mtd->writesize / ecc->size; ecc->algo = NAND_ECC_ALGO_BCH; diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 3d162fdc9ce2..7fcc5e67163e 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -1108,7 +1108,7 @@ static int atmel_nand_pmecc_init(struct nand_chip *chip) chip->options |= NAND_NO_SUBPAGE_WRITE; - mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); + mtd_set_ooblayout(mtd, nand_get_large_page_ooblayout()); return 0; } diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c index 58966a9706b1..427f320fb79b 100644 --- a/drivers/mtd/nand/raw/davinci_nand.c +++ b/drivers/mtd/nand/raw/davinci_nand.c @@ -645,7 +645,8 @@ static int davinci_nand_attach_chip(struct nand_chip *chip) mtd_set_ooblayout(mtd, &hwecc4_small_ooblayout_ops); } else if (chunks == 4 || chunks == 8) { - mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); + mtd_set_ooblayout(mtd, + nand_get_large_page_ooblayout()); info->chip.ecc.read_page = nand_davinci_read_page_hwecc_oob_first; } else { return -EIO; diff --git a/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c index 70309f18124c..0e9d426fe4f2 100644 --- a/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c +++ b/drivers/mtd/nand/raw/ingenic/ingenic_nand_drv.c @@ -243,8 +243,10 @@ static int ingenic_nand_attach_chip(struct nand_chip *chip) /* For legacy reasons we use a different layout on the qi,lb60 board. */ if (of_machine_is_compatible("qi,lb60")) mtd_set_ooblayout(mtd, &qi_lb60_ooblayout_ops); - else + else if (nfc->soc_info->oob_layout) mtd_set_ooblayout(mtd, nfc->soc_info->oob_layout); + else + mtd_set_ooblayout(mtd, nand_get_large_page_ooblayout()); return 0; } @@ -532,7 +534,6 @@ static const struct jz_soc_info jz4740_soc_info = { .data_offset = 0x00000000, .cmd_offset = 0x00008000, .addr_offset = 0x00010000, - .oob_layout = &nand_ooblayout_lp_ops, }; static const struct jz_soc_info jz4725b_soc_info = { @@ -546,7 +547,6 @@ static const struct jz_soc_info jz4780_soc_info = { .data_offset = 0x00000000, .cmd_offset = 0x00400000, .addr_offset = 0x00800000, - .oob_layout = &nand_ooblayout_lp_ops, }; static const struct of_device_id ingenic_nand_dt_match[] = { diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 2c102aeecdc1..4b41de520d0d 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -46,166 +46,6 @@ #include "internals.h" -/* Define default oob placement schemes for large and small page devices */ -static int nand_ooblayout_ecc_sp(struct mtd_info *mtd, int section, - struct mtd_oob_region *oobregion) -{ - struct nand_chip *chip = mtd_to_nand(mtd); - struct nand_ecc_ctrl *ecc = &chip->ecc; - - if (section > 1) - return -ERANGE; - - if (!section) { - oobregion->offset = 0; - if (mtd->oobsize == 16) - oobregion->length = 4; - else - oobregion->length = 3; - } else { - if (mtd->oobsize == 8) - return -ERANGE; - - oobregion->offset = 6; - oobregion->length = ecc->total - 4; - } - - return 0; -} - -static int nand_ooblayout_free_sp(struct mtd_info *mtd, int section, - struct mtd_oob_region *oobregion) -{ - if (section > 1) - return -ERANGE; - - if (mtd->oobsize == 16) { - if (section) - return -ERANGE; - - oobregion->length = 8; - oobregion->offset = 8; - } else { - oobregion->length = 2; - if (!section) - oobregion->offset = 3; - else - oobregion->offset = 6; - } - - return 0; -} - -const struct mtd_ooblayout_ops nand_ooblayout_sp_ops = { - .ecc = nand_ooblayout_ecc_sp, - .free = nand_ooblayout_free_sp, -}; -EXPORT_SYMBOL_GPL(nand_ooblayout_sp_ops); - -static int nand_ooblayout_ecc_lp(struct mtd_info *mtd, int section, - struct mtd_oob_region *oobregion) -{ - struct nand_chip *chip = mtd_to_nand(mtd); - struct nand_ecc_ctrl *ecc = &chip->ecc; - - if (section || !ecc->total) - return -ERANGE; - - oobregion->length = ecc->total; - oobregion->offset = mtd->oobsize - oobregion->length; - - return 0; -} - -static int nand_ooblayout_free_lp(struct mtd_info *mtd, int section, - struct mtd_oob_region *oobregion) -{ - struct nand_chip *chip = mtd_to_nand(mtd); - struct nand_ecc_ctrl *ecc = &chip->ecc; - - if (section) - return -ERANGE; - - oobregion->length = mtd->oobsize - ecc->total - 2; - oobregion->offset = 2; - - return 0; -} - -const struct mtd_ooblayout_ops nand_ooblayout_lp_ops = { - .ecc = nand_ooblayout_ecc_lp, - .free = nand_ooblayout_free_lp, -}; -EXPORT_SYMBOL_GPL(nand_ooblayout_lp_ops); - -/* - * Support the old "large page" layout used for 1-bit Hamming ECC where ECC - * are placed at a fixed offset. - */ -static int nand_ooblayout_ecc_lp_hamming(struct mtd_info *mtd, int section, - struct mtd_oob_region *oobregion) -{ - struct nand_chip *chip = mtd_to_nand(mtd); - struct nand_ecc_ctrl *ecc = &chip->ecc; - - if (section) - return -ERANGE; - - switch (mtd->oobsize) { - case 64: - oobregion->offset = 40; - break; - case 128: - oobregion->offset = 80; - break; - default: - return -EINVAL; - } - - oobregion->length = ecc->total; - if (oobregion->offset + oobregion->length > mtd->oobsize) - return -ERANGE; - - return 0; -} - -static int nand_ooblayout_free_lp_hamming(struct mtd_info *mtd, int section, - struct mtd_oob_region *oobregion) -{ - struct nand_chip *chip = mtd_to_nand(mtd); - struct nand_ecc_ctrl *ecc = &chip->ecc; - int ecc_offset = 0; - - if (section < 0 || section > 1) - return -ERANGE; - - switch (mtd->oobsize) { - case 64: - ecc_offset = 40; - break; - case 128: - ecc_offset = 80; - break; - default: - return -EINVAL; - } - - if (section == 0) { - oobregion->offset = 2; - oobregion->length = ecc_offset - 2; - } else { - oobregion->offset = ecc_offset + ecc->total; - oobregion->length = mtd->oobsize - oobregion->offset; - } - - return 0; -} - -static const struct mtd_ooblayout_ops nand_ooblayout_lp_hamming_ops = { - .ecc = nand_ooblayout_ecc_lp_hamming, - .free = nand_ooblayout_free_lp_hamming, -}; - static int nand_pairing_dist3_get_info(struct mtd_info *mtd, int page, struct mtd_pairing_info *info) { @@ -5372,7 +5212,7 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip) return -EINVAL; } - mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); + mtd_set_ooblayout(mtd, nand_get_large_page_ooblayout()); } @@ -5381,7 +5221,7 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip) * used, otherwise we don't know how many bytes can really be * used. */ - if (mtd->ooblayout == &nand_ooblayout_lp_ops && + if (mtd->ooblayout == nand_get_large_page_ooblayout() && ecc->options & NAND_ECC_MAXIMIZE) { int steps, bytes; @@ -5783,11 +5623,12 @@ static int nand_scan_tail(struct nand_chip *chip) switch (mtd->oobsize) { case 8: case 16: - mtd_set_ooblayout(mtd, &nand_ooblayout_sp_ops); + mtd_set_ooblayout(mtd, nand_get_small_page_ooblayout()); break; case 64: case 128: - mtd_set_ooblayout(mtd, &nand_ooblayout_lp_hamming_ops); + mtd_set_ooblayout(mtd, + nand_get_large_page_hamming_ooblayout()); break; default: /* @@ -5799,7 +5640,7 @@ static int nand_scan_tail(struct nand_chip *chip) */ if (ecc->engine_type == NAND_ECC_ENGINE_TYPE_NONE) { mtd_set_ooblayout(mtd, - &nand_ooblayout_lp_ops); + nand_get_large_page_ooblayout()); break; } @@ -5954,7 +5795,10 @@ static int nand_scan_tail(struct nand_chip *chip) ret = -EINVAL; goto err_nand_manuf_cleanup; } + ecc->total = ecc->steps * ecc->bytes; + chip->base.ecc.ctx.total = ecc->total; + if (ecc->total > mtd->oobsize) { WARN(1, "Total number of ECC bytes exceeded oobsize\n"); ret = -EINVAL; diff --git a/drivers/mtd/nand/raw/nand_bch.c b/drivers/mtd/nand/raw/nand_bch.c index d5af8c5fd02f..9d19ac14c196 100644 --- a/drivers/mtd/nand/raw/nand_bch.c +++ b/drivers/mtd/nand/raw/nand_bch.c @@ -165,6 +165,7 @@ struct nand_bch_control *nand_bch_init(struct mtd_info *mtd) */ nand->ecc.steps = eccsteps; nand->ecc.total = eccsteps * eccbytes; + nand->base.ecc.ctx.total = nand->ecc.total; if (mtd_ooblayout_count_eccbytes(mtd) != (eccsteps*eccbytes)) { pr_warn("invalid ecc layout\n"); goto fail; diff --git a/drivers/mtd/nand/raw/nand_toshiba.c b/drivers/mtd/nand/raw/nand_toshiba.c index fb6662337b90..cf4f37959421 100644 --- a/drivers/mtd/nand/raw/nand_toshiba.c +++ b/drivers/mtd/nand/raw/nand_toshiba.c @@ -140,7 +140,7 @@ static void toshiba_nand_benand_init(struct nand_chip *chip) chip->options |= NAND_SUBPAGE_READ; - mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); + mtd_set_ooblayout(mtd, nand_get_large_page_ooblayout()); } static void toshiba_nand_decode_id(struct nand_chip *chip) diff --git a/drivers/mtd/nand/raw/vf610_nfc.c b/drivers/mtd/nand/raw/vf610_nfc.c index 8ee2c1f539c4..50dc0c93140c 100644 --- a/drivers/mtd/nand/raw/vf610_nfc.c +++ b/drivers/mtd/nand/raw/vf610_nfc.c @@ -779,7 +779,7 @@ static int vf610_nfc_attach_chip(struct nand_chip *chip) mtd->oobsize = 64; /* Use default large page ECC layout defined in NAND core */ - mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops); + mtd_set_ooblayout(mtd, nand_get_large_page_ooblayout()); if (chip->ecc.strength == 32) { nfc->ecc_mode = ECC_60_BYTE; chip->ecc.bytes = 60; diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 967b616c50df..1bbce6fa1b08 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -14,6 +14,7 @@ #define __LINUX_MTD_RAWNAND_H #include +#include #include #include #include @@ -1156,9 +1157,6 @@ struct nand_chip { void *priv; }; -extern const struct mtd_ooblayout_ops nand_ooblayout_sp_ops; -extern const struct mtd_ooblayout_ops nand_ooblayout_lp_ops; - static inline struct nand_chip *mtd_to_nand(struct mtd_info *mtd) { return container_of(mtd, struct nand_chip, base.mtd); From 8c126720fe109bcd7316c37d50b2b17c2ae1dded Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:06 +0200 Subject: [PATCH 18/49] mtd: rawnand: Use the ECC framework nand_ecc_is_strong_enough() helper Plus, the new helper has a more "english" name. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-19-miquel.raynal@bootlin.com --- drivers/mtd/nand/raw/nand_base.c | 39 +------------------------------- 1 file changed, 1 insertion(+), 38 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 4b41de520d0d..9897274a82e4 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5494,43 +5494,6 @@ int nand_ecc_choose_conf(struct nand_chip *chip, } EXPORT_SYMBOL_GPL(nand_ecc_choose_conf); -/* - * Check if the chip configuration meet the datasheet requirements. - - * If our configuration corrects A bits per B bytes and the minimum - * required correction level is X bits per Y bytes, then we must ensure - * both of the following are true: - * - * (1) A / B >= X / Y - * (2) A >= X - * - * Requirement (1) ensures we can correct for the required bitflip density. - * Requirement (2) ensures we can correct even when all bitflips are clumped - * in the same sector. - */ -static bool nand_ecc_strength_good(struct nand_chip *chip) -{ - struct mtd_info *mtd = nand_to_mtd(chip); - struct nand_ecc_ctrl *ecc = &chip->ecc; - const struct nand_ecc_props *requirements = - nanddev_get_ecc_requirements(&chip->base); - int corr, ds_corr; - - if (ecc->size == 0 || requirements->step_size == 0) - /* Not enough information */ - return true; - - /* - * We get the number of corrected bits per page to compare - * the correction density. - */ - corr = (mtd->writesize * ecc->strength) / ecc->size; - ds_corr = (mtd->writesize * requirements->strength) / - requirements->step_size; - - return corr >= ds_corr && ecc->strength >= requirements->strength; -} - static int rawnand_erase(struct nand_device *nand, const struct nand_pos *pos) { struct nand_chip *chip = container_of(nand, struct nand_chip, @@ -5816,7 +5779,7 @@ static int nand_scan_tail(struct nand_chip *chip) mtd->oobavail = ret; /* ECC sanity check: warn if it's too weak */ - if (!nand_ecc_strength_good(chip)) + if (!nand_ecc_is_strong_enough(&chip->base)) pr_warn("WARNING: %s: the ECC used on your system (%db/%dB) is too weak compared to the one required by the NAND chip (%db/%dB)\n", mtd->name, chip->ecc.strength, chip->ecc.size, nanddev_get_ecc_requirements(&chip->base)->strength, From d7157ff49a5b5845b37b8f2bf31607f0af295ef1 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:07 +0200 Subject: [PATCH 19/49] mtd: rawnand: Use the ECC framework user input parsing bits Many helpers are generic to all NAND chips, they should not be raw-NAND specific, so use the generic ones. To avoid moving all the raw NAND core "history" into the generic NAND layer, we keep a part of this parsing in the raw NAND core to ensure backward compatibility. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-20-miquel.raynal@bootlin.com --- drivers/mtd/nand/raw/nand_base.c | 144 +++++++++++++++---------------- include/linux/mtd/rawnand.h | 12 --- 2 files changed, 71 insertions(+), 85 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 9897274a82e4..8bb3e4ee4bfb 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4877,18 +4877,27 @@ free_detect_allocation: return ret; } -static const char * const nand_ecc_modes[] = { - [NAND_ECC_NONE] = "none", - [NAND_ECC_SOFT] = "soft", - [NAND_ECC_HW] = "hw", - [NAND_ECC_HW_SYNDROME] = "hw_syndrome", - [NAND_ECC_ON_DIE] = "on-die", -}; - static enum nand_ecc_engine_type -of_get_nand_ecc_engine_type(struct device_node *np) +of_get_rawnand_ecc_engine_type_legacy(struct device_node *np) { - enum nand_ecc_mode eng_type; + enum nand_ecc_legacy_mode { + NAND_ECC_INVALID, + NAND_ECC_NONE, + NAND_ECC_SOFT, + NAND_ECC_SOFT_BCH, + NAND_ECC_HW, + NAND_ECC_HW_SYNDROME, + NAND_ECC_ON_DIE, + }; + const char * const nand_ecc_legacy_modes[] = { + [NAND_ECC_NONE] = "none", + [NAND_ECC_SOFT] = "soft", + [NAND_ECC_SOFT_BCH] = "soft_bch", + [NAND_ECC_HW] = "hw", + [NAND_ECC_HW_SYNDROME] = "hw_syndrome", + [NAND_ECC_ON_DIE] = "on-die", + }; + enum nand_ecc_legacy_mode eng_type; const char *pm; int err; @@ -4897,12 +4906,13 @@ of_get_nand_ecc_engine_type(struct device_node *np) return NAND_ECC_ENGINE_TYPE_INVALID; for (eng_type = NAND_ECC_NONE; - eng_type < ARRAY_SIZE(nand_ecc_modes); eng_type++) { - if (!strcasecmp(pm, nand_ecc_modes[eng_type])) { + eng_type < ARRAY_SIZE(nand_ecc_legacy_modes); eng_type++) { + if (!strcasecmp(pm, nand_ecc_legacy_modes[eng_type])) { switch (eng_type) { case NAND_ECC_NONE: return NAND_ECC_ENGINE_TYPE_NONE; case NAND_ECC_SOFT: + case NAND_ECC_SOFT_BCH: return NAND_ECC_ENGINE_TYPE_SOFT; case NAND_ECC_HW: case NAND_ECC_HW_SYNDROME: @@ -4915,43 +4925,29 @@ of_get_nand_ecc_engine_type(struct device_node *np) } } - /* - * For backward compatibility we support few obsoleted values that don't - * have their mappings into the nand_ecc_engine_providers enum anymore - * (they were merged with other enums). - */ - if (!strcasecmp(pm, "soft_bch")) - return NAND_ECC_ENGINE_TYPE_SOFT; - return NAND_ECC_ENGINE_TYPE_INVALID; } -static const char * const nand_ecc_algos[] = { - [NAND_ECC_ALGO_HAMMING] = "hamming", - [NAND_ECC_ALGO_BCH] = "bch", - [NAND_ECC_ALGO_RS] = "rs", -}; - -static enum nand_ecc_algo of_get_nand_ecc_algo(struct device_node *np) +static enum nand_ecc_placement +of_get_rawnand_ecc_placement_legacy(struct device_node *np) { - enum nand_ecc_algo ecc_algo; const char *pm; int err; - err = of_property_read_string(np, "nand-ecc-algo", &pm); + err = of_property_read_string(np, "nand-ecc-mode", &pm); if (!err) { - for (ecc_algo = NAND_ECC_ALGO_HAMMING; - ecc_algo < ARRAY_SIZE(nand_ecc_algos); - ecc_algo++) { - if (!strcasecmp(pm, nand_ecc_algos[ecc_algo])) - return ecc_algo; - } + if (!strcasecmp(pm, "hw_syndrome")) + return NAND_ECC_PLACEMENT_INTERLEAVED; } - /* - * For backward compatibility we also read "nand-ecc-mode" checking - * for some obsoleted values that were specifying ECC algorithm. - */ + return NAND_ECC_PLACEMENT_UNKNOWN; +} + +static enum nand_ecc_algo of_get_rawnand_ecc_algo_legacy(struct device_node *np) +{ + const char *pm; + int err; + err = of_property_read_string(np, "nand-ecc-mode", &pm); if (!err) { if (!strcasecmp(pm, "soft")) @@ -4963,22 +4959,19 @@ static enum nand_ecc_algo of_get_nand_ecc_algo(struct device_node *np) return NAND_ECC_ALGO_UNKNOWN; } -static int of_get_nand_ecc_step_size(struct device_node *np) +static void of_get_nand_ecc_legacy_user_config(struct nand_chip *chip) { - int ret; - u32 val; + struct device_node *dn = nand_get_flash_node(chip); + struct nand_ecc_props *user_conf = &chip->base.ecc.user_conf; - ret = of_property_read_u32(np, "nand-ecc-step-size", &val); - return ret ? ret : val; -} + if (user_conf->engine_type == NAND_ECC_ENGINE_TYPE_INVALID) + user_conf->engine_type = of_get_rawnand_ecc_engine_type_legacy(dn); -static int of_get_nand_ecc_strength(struct device_node *np) -{ - int ret; - u32 val; + if (user_conf->algo == NAND_ECC_ALGO_UNKNOWN) + user_conf->algo = of_get_rawnand_ecc_algo_legacy(dn); - ret = of_property_read_u32(np, "nand-ecc-strength", &val); - return ret ? ret : val; + if (user_conf->placement == NAND_ECC_PLACEMENT_UNKNOWN) + user_conf->placement = of_get_rawnand_ecc_placement_legacy(dn); } static int of_get_nand_bus_width(struct device_node *np) @@ -5002,12 +4995,10 @@ static bool of_get_nand_on_flash_bbt(struct device_node *np) return of_property_read_bool(np, "nand-on-flash-bbt"); } -static int nand_dt_init(struct nand_chip *chip) +static int rawnand_dt_init(struct nand_chip *chip) { + struct nand_device *nand = mtd_to_nanddev(nand_to_mtd(chip)); struct device_node *dn = nand_get_flash_node(chip); - enum nand_ecc_engine_type ecc_type; - enum nand_ecc_algo ecc_algo; - int ecc_strength, ecc_step; if (!dn) return 0; @@ -5021,26 +5012,33 @@ static int nand_dt_init(struct nand_chip *chip) if (of_get_nand_on_flash_bbt(dn)) chip->bbt_options |= NAND_BBT_USE_FLASH; - ecc_type = of_get_nand_ecc_engine_type(dn); - ecc_algo = of_get_nand_ecc_algo(dn); - ecc_strength = of_get_nand_ecc_strength(dn); - ecc_step = of_get_nand_ecc_step_size(dn); - - if (ecc_type != NAND_ECC_ENGINE_TYPE_INVALID) - chip->ecc.engine_type = ecc_type; - - if (ecc_algo != NAND_ECC_ALGO_UNKNOWN) - chip->ecc.algo = ecc_algo; - - if (ecc_strength >= 0) - chip->ecc.strength = ecc_strength; - - if (ecc_step > 0) - chip->ecc.size = ecc_step; - if (of_property_read_bool(dn, "nand-ecc-maximize")) chip->ecc.options |= NAND_ECC_MAXIMIZE; + of_get_nand_ecc_user_config(nand); + of_get_nand_ecc_legacy_user_config(chip); + + /* + * If neither the user nor the NAND controller have requested a specific + * ECC engine type, we will default to NAND_ECC_ENGINE_TYPE_ON_HOST. + */ + nand->ecc.defaults.engine_type = NAND_ECC_ENGINE_TYPE_ON_HOST; + + /* + * Use the user requested engine type, unless there is none, in this + * case default to the NAND controller choice, otherwise fallback to + * the raw NAND default one. + */ + if (nand->ecc.user_conf.engine_type != NAND_ECC_ENGINE_TYPE_INVALID) + chip->ecc.engine_type = nand->ecc.user_conf.engine_type; + if (chip->ecc.engine_type == NAND_ECC_ENGINE_TYPE_INVALID) + chip->ecc.engine_type = nand->ecc.defaults.engine_type; + + chip->ecc.placement = nand->ecc.user_conf.placement; + chip->ecc.algo = nand->ecc.user_conf.algo; + chip->ecc.strength = nand->ecc.user_conf.strength; + chip->ecc.size = nand->ecc.user_conf.step_size; + return 0; } @@ -5077,7 +5075,7 @@ static int nand_scan_ident(struct nand_chip *chip, unsigned int maxchips, /* Enforce the right timings for reset/detection */ chip->current_interface_config = nand_get_reset_interface_config(); - ret = nand_dt_init(chip); + ret = rawnand_dt_init(chip); if (ret) return ret; diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 1bbce6fa1b08..671e60948deb 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -81,18 +81,6 @@ struct nand_chip; #define NAND_DATA_IFACE_CHECK_ONLY -1 -/* - * Constants for ECC_MODES - */ -enum nand_ecc_mode { - NAND_ECC_INVALID, - NAND_ECC_NONE, - NAND_ECC_SOFT, - NAND_ECC_HW, - NAND_ECC_HW_SYNDROME, - NAND_ECC_ON_DIE, -}; - /* * Constants for Hardware ECC */ From b5156335ac37f186812090795ed27884a76c3266 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 27 Aug 2020 10:52:08 +0200 Subject: [PATCH 20/49] mtd: rawnand: Use the NAND framework user_conf object for ECC flags Instead of storing the ECC flags in chip->ecc.options, use nanddev->ecc.user_conf.flags. There is currently only one to save: NAND_ECC_MAXIMIZE. Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-21-miquel.raynal@bootlin.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 3 ++- drivers/mtd/nand/raw/denali_pci.c | 2 +- drivers/mtd/nand/raw/nand_base.c | 14 +++++++------- drivers/mtd/nand/raw/sunxi_nand.c | 3 ++- drivers/mtd/nand/raw/tegra_nand.c | 5 +++-- include/linux/mtd/rawnand.h | 1 - 6 files changed, 15 insertions(+), 13 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 7fcc5e67163e..c3902e0e0b90 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -1046,6 +1046,7 @@ static int atmel_nand_pmecc_init(struct nand_chip *chip) const struct nand_ecc_props *requirements = nanddev_get_ecc_requirements(&chip->base); struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_device *nanddev = mtd_to_nanddev(mtd); struct atmel_nand *nand = to_atmel_nand(chip); struct atmel_nand_controller *nc; struct atmel_pmecc_user_req req; @@ -1070,7 +1071,7 @@ static int atmel_nand_pmecc_init(struct nand_chip *chip) chip->ecc.size = val; } - if (chip->ecc.options & NAND_ECC_MAXIMIZE) + if (nanddev->ecc.user_conf.flags & NAND_ECC_MAXIMIZE_STRENGTH) req.ecc.strength = ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH; else if (chip->ecc.strength) req.ecc.strength = chip->ecc.strength; diff --git a/drivers/mtd/nand/raw/denali_pci.c b/drivers/mtd/nand/raw/denali_pci.c index 2f77ee55e1bf..20c085a30adc 100644 --- a/drivers/mtd/nand/raw/denali_pci.c +++ b/drivers/mtd/nand/raw/denali_pci.c @@ -100,7 +100,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) goto out_remove_denali; } - dchip->chip.ecc.options |= NAND_ECC_MAXIMIZE; + dchip->chip.base.ecc.user_conf.flags |= NAND_ECC_MAXIMIZE_STRENGTH; dchip->nsels = nsels; diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 8bb3e4ee4bfb..3af9223e5240 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5012,9 +5012,6 @@ static int rawnand_dt_init(struct nand_chip *chip) if (of_get_nand_on_flash_bbt(dn)) chip->bbt_options |= NAND_BBT_USE_FLASH; - if (of_property_read_bool(dn, "nand-ecc-maximize")) - chip->ecc.options |= NAND_ECC_MAXIMIZE; - of_get_nand_ecc_user_config(nand); of_get_nand_ecc_legacy_user_config(chip); @@ -5145,6 +5142,7 @@ static void nand_scan_ident_cleanup(struct nand_chip *chip) static int nand_set_ecc_soft_ops(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_device *nanddev = mtd_to_nanddev(mtd); struct nand_ecc_ctrl *ecc = &chip->ecc; if (WARN_ON(ecc->engine_type != NAND_ECC_ENGINE_TYPE_SOFT)) @@ -5220,7 +5218,7 @@ static int nand_set_ecc_soft_ops(struct nand_chip *chip) * used. */ if (mtd->ooblayout == nand_get_large_page_ooblayout() && - ecc->options & NAND_ECC_MAXIMIZE) { + nanddev->ecc.user_conf.flags & NAND_ECC_MAXIMIZE_STRENGTH) { int steps, bytes; /* Always prefer 1k blocks over 512bytes ones */ @@ -5460,11 +5458,12 @@ nand_maximize_ecc(struct nand_chip *chip, * @caps: ECC engine caps info structure * @oobavail: OOB size that the ECC engine can use * - * Choose the ECC configuration according to following logic + * Choose the ECC configuration according to following logic. * * 1. If both ECC step size and ECC strength are already set (usually by DT) * then check if it is supported by this controller. - * 2. If NAND_ECC_MAXIMIZE is set, then select maximum ECC strength. + * 2. If the user provided the nand-ecc-maximize property, then select maximum + * ECC strength. * 3. Otherwise, try to match the ECC step size and ECC strength closest * to the chip's requirement. If available OOB size can't fit the chip * requirement then fallback to the maximum ECC step size and ECC strength. @@ -5475,6 +5474,7 @@ int nand_ecc_choose_conf(struct nand_chip *chip, const struct nand_ecc_caps *caps, int oobavail) { struct mtd_info *mtd = nand_to_mtd(chip); + struct nand_device *nanddev = mtd_to_nanddev(mtd); if (WARN_ON(oobavail < 0 || oobavail > mtd->oobsize)) return -EINVAL; @@ -5482,7 +5482,7 @@ int nand_ecc_choose_conf(struct nand_chip *chip, if (chip->ecc.size && chip->ecc.strength) return nand_check_ecc_caps(chip, caps, oobavail); - if (chip->ecc.options & NAND_ECC_MAXIMIZE) + if (nanddev->ecc.user_conf.flags & NAND_ECC_MAXIMIZE_STRENGTH) return nand_maximize_ecc(chip, caps, oobavail); if (!nand_match_ecc_req(chip, caps, oobavail)) diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c index b7b764ef4b1d..2a7ca3072f35 100644 --- a/drivers/mtd/nand/raw/sunxi_nand.c +++ b/drivers/mtd/nand/raw/sunxi_nand.c @@ -1609,12 +1609,13 @@ static int sunxi_nand_hw_ecc_ctrl_init(struct nand_chip *nand, static const u8 strengths[] = { 16, 24, 28, 32, 40, 48, 56, 60, 64 }; struct sunxi_nfc *nfc = to_sunxi_nfc(nand->controller); struct mtd_info *mtd = nand_to_mtd(nand); + struct nand_device *nanddev = mtd_to_nanddev(mtd); struct sunxi_nand_hw_ecc *data; int nsectors; int ret; int i; - if (ecc->options & NAND_ECC_MAXIMIZE) { + if (nanddev->ecc.user_conf.flags & NAND_ECC_MAXIMIZE_STRENGTH) { int bytes; ecc->size = 1024; diff --git a/drivers/mtd/nand/raw/tegra_nand.c b/drivers/mtd/nand/raw/tegra_nand.c index 100c18ef8fe8..fbf67722a049 100644 --- a/drivers/mtd/nand/raw/tegra_nand.c +++ b/drivers/mtd/nand/raw/tegra_nand.c @@ -840,9 +840,10 @@ static int tegra_nand_get_strength(struct nand_chip *chip, const int *strength, int strength_len, int bits_per_step, int oobsize) { + struct nand_device *base = mtd_to_nanddev(nand_to_mtd(chip)); const struct nand_ecc_props *requirements = - nanddev_get_ecc_requirements(&chip->base); - bool maximize = chip->ecc.options & NAND_ECC_MAXIMIZE; + nanddev_get_ecc_requirements(base); + bool maximize = base->ecc.user_conf.flags & NAND_ECC_MAXIMIZE_STRENGTH; int i; /* diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index 671e60948deb..aac07940de09 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -98,7 +98,6 @@ struct nand_chip; * pages and you want to rely on the default implementation. */ #define NAND_ECC_GENERIC_ERASED_CHECK BIT(0) -#define NAND_ECC_MAXIMIZE BIT(1) /* * Option constants for bizarre disfunctionality and real From b0155dadeb15574380115c8fa82853ff9d6da1ad Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 20 Jul 2020 16:13:51 +0300 Subject: [PATCH 21/49] mtd: rawnand: atmel: Enable the NFC controller at probe time No need to enable it everytime select_chip() is called. If we really care about PM, we should implement runtime PM hooks and disable the controller and all its clocks when the controller has been unused for some time. Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Reviewed-by: Tudor Ambarus Signed-off-by: Tudor Ambarus Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200720131356.1579073-2-tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index c3902e0e0b90..21f4f7f0e4f3 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -525,11 +525,8 @@ static void atmel_hsmc_nand_select_chip(struct nand_chip *chip, int cs) atmel_nand_select_chip(chip, cs); - if (!nand->activecs) { - regmap_write(nc->base.smc, ATMEL_HSMC_NFC_CTRL, - ATMEL_HSMC_NFC_CTRL_DIS); + if (!nand->activecs) return; - } if (nand->activecs->rb.type == ATMEL_NAND_NATIVE_RB) chip->legacy.dev_ready = atmel_hsmc_nand_dev_ready; @@ -542,8 +539,6 @@ static void atmel_hsmc_nand_select_chip(struct nand_chip *chip, int cs) ATMEL_HSMC_NFC_CFG_PAGESIZE(mtd->writesize) | ATMEL_HSMC_NFC_CFG_SPARESIZE(mtd->oobsize) | ATMEL_HSMC_NFC_CFG_RSPARE); - regmap_write(nc->base.smc, ATMEL_HSMC_NFC_CTRL, - ATMEL_HSMC_NFC_CTRL_EN); } static int atmel_nfc_exec_op(struct atmel_hsmc_nand_controller *nc, bool poll) @@ -2251,6 +2246,9 @@ atmel_hsmc_nand_controller_remove(struct atmel_nand_controller *nc) return ret; hsmc_nc = container_of(nc, struct atmel_hsmc_nand_controller, base); + regmap_write(hsmc_nc->base.smc, ATMEL_HSMC_NFC_CTRL, + ATMEL_HSMC_NFC_CTRL_DIS); + if (hsmc_nc->sram.pool) gen_pool_free(hsmc_nc->sram.pool, (unsigned long)hsmc_nc->sram.virt, @@ -2303,6 +2301,8 @@ static int atmel_hsmc_nand_controller_probe(struct platform_device *pdev, /* Initial NFC configuration. */ regmap_write(nc->base.smc, ATMEL_HSMC_NFC_CFG, ATMEL_HSMC_NFC_CFG_DTO_MAX); + regmap_write(nc->base.smc, ATMEL_HSMC_NFC_CTRL, + ATMEL_HSMC_NFC_CTRL_EN); ret = atmel_nand_controller_add_nands(&nc->base); if (ret) From dca3c3ce3c02b92784fc7d7dc6eb4f9d50c7ebb6 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 20 Jul 2020 16:13:52 +0300 Subject: [PATCH 22/49] mtd: rawnand: atmel: Drop redundant nand_read_page_op() The legacy page read path in atmel_hsmc_nand_pmecc_read_pg() issues a nand_read_page_op() that's already issued by atmel_nand_pmecc_read_pg(). Let's get rid of the unneeded one. Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Reviewed-by: Tudor Ambarus Signed-off-by: Tudor Ambarus Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200720131356.1579073-3-tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 21f4f7f0e4f3..420f193b8b4a 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -983,12 +983,9 @@ static int atmel_hsmc_nand_pmecc_read_pg(struct nand_chip *chip, u8 *buf, * connected to a native SoC R/B pin. If that's not the case, fallback * to the non-optimized one. */ - if (nand->activecs->rb.type != ATMEL_NAND_NATIVE_RB) { - nand_read_page_op(chip, page, 0, NULL, 0); - + if (nand->activecs->rb.type != ATMEL_NAND_NATIVE_RB) return atmel_nand_pmecc_read_pg(chip, buf, oob_required, page, raw); - } nc->op.cmds[nc->op.ncmds++] = NAND_CMD_READ0; From 5b2baf1fe5fd0b67d28cb18436b06ccdd2c2becf Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 20 Jul 2020 16:13:53 +0300 Subject: [PATCH 23/49] mtd: rawnand: atmel: Use nand_{write,read}_data_op() Use the nand_{write,read}_data_op() helpers instead of calling the atmel_nand_{read,write}_buf() functions directly. This will ease the transition to exec_op(). Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Reviewed-by: Tudor Ambarus Signed-off-by: Tudor Ambarus Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200720131356.1579073-4-tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 420f193b8b4a..826e694cc265 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -833,7 +833,7 @@ static int atmel_nand_pmecc_write_pg(struct nand_chip *chip, const u8 *buf, if (ret) return ret; - atmel_nand_write_buf(chip, buf, mtd->writesize); + nand_write_data_op(chip, buf, mtd->writesize, false); ret = atmel_nand_pmecc_generate_eccbytes(chip, raw); if (ret) { @@ -843,7 +843,7 @@ static int atmel_nand_pmecc_write_pg(struct nand_chip *chip, const u8 *buf, atmel_nand_pmecc_disable(chip, raw); - atmel_nand_write_buf(chip, chip->oob_poi, mtd->oobsize); + nand_write_data_op(chip, chip->oob_poi, mtd->oobsize, false); return nand_prog_page_end_op(chip); } @@ -873,8 +873,8 @@ static int atmel_nand_pmecc_read_pg(struct nand_chip *chip, u8 *buf, if (ret) return ret; - atmel_nand_read_buf(chip, buf, mtd->writesize); - atmel_nand_read_buf(chip, chip->oob_poi, mtd->oobsize); + nand_read_data_op(chip, buf, mtd->writesize, false, false); + nand_read_data_op(chip, chip->oob_poi, mtd->oobsize, false, false); ret = atmel_nand_pmecc_correct_data(chip, buf, raw); @@ -934,7 +934,7 @@ static int atmel_hsmc_nand_pmecc_write_pg(struct nand_chip *chip, if (ret) return ret; - atmel_nand_write_buf(chip, chip->oob_poi, mtd->oobsize); + nand_write_data_op(chip, chip->oob_poi, mtd->oobsize, false); nc->op.cmds[0] = NAND_CMD_PAGEPROG; nc->op.ncmds = 1; From 060c931c946f33552d652d01bc1010d843e2baa6 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 20 Jul 2020 16:13:54 +0300 Subject: [PATCH 24/49] mtd: rawnand: atmel: Use nand_prog_page_end_op() The nand_prog_page_end_op() sequence is open-coded in atmel_hsmc_nand_pmecc_write_pg(). Let's use the generic helper here. Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Signed-off-by: Tudor Ambarus Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200720131356.1579073-5-tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 826e694cc265..c8305beafb39 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -902,7 +902,7 @@ static int atmel_hsmc_nand_pmecc_write_pg(struct nand_chip *chip, struct mtd_info *mtd = nand_to_mtd(chip); struct atmel_nand *nand = to_atmel_nand(chip); struct atmel_hsmc_nand_controller *nc; - int ret, status; + int ret; nc = to_hsmc_nand_controller(chip->controller); @@ -936,19 +936,7 @@ static int atmel_hsmc_nand_pmecc_write_pg(struct nand_chip *chip, nand_write_data_op(chip, chip->oob_poi, mtd->oobsize, false); - nc->op.cmds[0] = NAND_CMD_PAGEPROG; - nc->op.ncmds = 1; - nc->op.cs = nand->activecs->id; - ret = atmel_nfc_exec_op(nc, false); - if (ret) - dev_err(nc->base.dev, "Failed to program NAND page (err = %d)\n", - ret); - - status = chip->legacy.waitfunc(chip); - if (status & NAND_STATUS_FAIL) - return -EIO; - - return ret; + return nand_prog_page_end_op(chip); } static int atmel_hsmc_nand_pmecc_write_page(struct nand_chip *chip, From 03b3e0c27df3df76f5ea331fbc5fd94d1d355db2 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 20 Jul 2020 16:13:55 +0300 Subject: [PATCH 25/49] mtd: rawnand: atmel: Convert the driver to exec_op() Both SMC and HSMC are converted to exec_op(). Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Tested-by: Tudor Ambarus Signed-off-by: Tudor Ambarus Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200720131356.1579073-6-tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 267 +++++++++++++++++++ 1 file changed, 267 insertions(+) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index c8305beafb39..3847f4aeff32 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -202,6 +202,8 @@ struct atmel_nand_controller_ops { int (*ecc_init)(struct nand_chip *chip); int (*setup_interface)(struct atmel_nand *nand, int csline, const struct nand_interface_config *conf); + int (*exec_op)(struct atmel_nand *nand, + const struct nand_operation *op, bool check_only); }; struct atmel_nand_controller_caps { @@ -259,6 +261,7 @@ struct atmel_hsmc_nand_controller { struct regmap *io; struct atmel_nfc_op op; struct completion complete; + u32 cfg; int irq; /* Only used when instantiating from legacy DT bindings. */ @@ -638,6 +641,252 @@ static void atmel_nand_cmd_ctrl(struct nand_chip *chip, int cmd, writeb(cmd, nand->activecs->io.virt + nc->caps->cle_offs); } +static void atmel_nand_data_in(struct atmel_nand *nand, void *buf, + unsigned int len, bool force_8bit) +{ + struct atmel_nand_controller *nc; + + nc = to_nand_controller(nand->base.controller); + + /* + * If the controller supports DMA, the buffer address is DMA-able and + * len is long enough to make DMA transfers profitable, let's trigger + * a DMA transfer. If it fails, fallback to PIO mode. + */ + if (nc->dmac && virt_addr_valid(buf) && + len >= MIN_DMA_LEN && !force_8bit && + !atmel_nand_dma_transfer(nc, buf, nand->activecs->io.dma, len, + DMA_FROM_DEVICE)) + return; + + if ((nand->base.options & NAND_BUSWIDTH_16) && !force_8bit) + ioread16_rep(nand->activecs->io.virt, buf, len / 2); + else + ioread8_rep(nand->activecs->io.virt, buf, len); +} + +static void atmel_nand_data_out(struct atmel_nand *nand, const void *buf, + unsigned int len, bool force_8bit) +{ + struct atmel_nand_controller *nc; + + nc = to_nand_controller(nand->base.controller); + + /* + * If the controller supports DMA, the buffer address is DMA-able and + * len is long enough to make DMA transfers profitable, let's trigger + * a DMA transfer. If it fails, fallback to PIO mode. + */ + if (nc->dmac && virt_addr_valid(buf) && + len >= MIN_DMA_LEN && !force_8bit && + !atmel_nand_dma_transfer(nc, (void *)buf, nand->activecs->io.dma, + len, DMA_TO_DEVICE)) + return; + + if ((nand->base.options & NAND_BUSWIDTH_16) && !force_8bit) + iowrite16_rep(nand->activecs->io.virt, buf, len / 2); + else + iowrite8_rep(nand->activecs->io.virt, buf, len); +} + +static int atmel_nand_waitrdy(struct atmel_nand *nand, unsigned int timeout_ms) +{ + if (nand->activecs->rb.type == ATMEL_NAND_NO_RB) + return nand_soft_waitrdy(&nand->base, timeout_ms); + + return nand_gpio_waitrdy(&nand->base, nand->activecs->rb.gpio, + timeout_ms); +} + +static int atmel_hsmc_nand_waitrdy(struct atmel_nand *nand, + unsigned int timeout_ms) +{ + struct atmel_hsmc_nand_controller *nc; + u32 status, mask; + + if (nand->activecs->rb.type != ATMEL_NAND_NATIVE_RB) + return atmel_nand_waitrdy(nand, timeout_ms); + + nc = to_hsmc_nand_controller(nand->base.controller); + mask = ATMEL_HSMC_NFC_SR_RBEDGE(nand->activecs->rb.id); + return regmap_read_poll_timeout_atomic(nc->base.smc, ATMEL_HSMC_NFC_SR, + status, status & mask, + 10, timeout_ms * 1000); +} + +static void atmel_nand_select_target(struct atmel_nand *nand, + unsigned int cs) +{ + nand->activecs = &nand->cs[cs]; +} + +static void atmel_hsmc_nand_select_target(struct atmel_nand *nand, + unsigned int cs) +{ + struct mtd_info *mtd = nand_to_mtd(&nand->base); + struct atmel_hsmc_nand_controller *nc; + u32 cfg = ATMEL_HSMC_NFC_CFG_PAGESIZE(mtd->writesize) | + ATMEL_HSMC_NFC_CFG_SPARESIZE(mtd->oobsize) | + ATMEL_HSMC_NFC_CFG_RSPARE; + + nand->activecs = &nand->cs[cs]; + nc = to_hsmc_nand_controller(nand->base.controller); + if (nc->cfg == cfg) + return; + + regmap_update_bits(nc->base.smc, ATMEL_HSMC_NFC_CFG, + ATMEL_HSMC_NFC_CFG_PAGESIZE_MASK | + ATMEL_HSMC_NFC_CFG_SPARESIZE_MASK | + ATMEL_HSMC_NFC_CFG_RSPARE | + ATMEL_HSMC_NFC_CFG_WSPARE, + cfg); + nc->cfg = cfg; +} + +static int atmel_smc_nand_exec_instr(struct atmel_nand *nand, + const struct nand_op_instr *instr) +{ + struct atmel_nand_controller *nc; + unsigned int i; + + nc = to_nand_controller(nand->base.controller); + switch (instr->type) { + case NAND_OP_CMD_INSTR: + writeb(instr->ctx.cmd.opcode, + nand->activecs->io.virt + nc->caps->cle_offs); + return 0; + case NAND_OP_ADDR_INSTR: + for (i = 0; i < instr->ctx.addr.naddrs; i++) + writeb(instr->ctx.addr.addrs[i], + nand->activecs->io.virt + nc->caps->ale_offs); + return 0; + case NAND_OP_DATA_IN_INSTR: + atmel_nand_data_in(nand, instr->ctx.data.buf.in, + instr->ctx.data.len, + instr->ctx.data.force_8bit); + return 0; + case NAND_OP_DATA_OUT_INSTR: + atmel_nand_data_out(nand, instr->ctx.data.buf.out, + instr->ctx.data.len, + instr->ctx.data.force_8bit); + return 0; + case NAND_OP_WAITRDY_INSTR: + return atmel_nand_waitrdy(nand, + instr->ctx.waitrdy.timeout_ms); + default: + break; + } + + return -EINVAL; +} + +static int atmel_smc_nand_exec_op(struct atmel_nand *nand, + const struct nand_operation *op, + bool check_only) +{ + unsigned int i; + int ret = 0; + + if (check_only) + return 0; + + atmel_nand_select_target(nand, op->cs); + gpiod_set_value(nand->activecs->csgpio, 0); + for (i = 0; i < op->ninstrs; i++) { + ret = atmel_smc_nand_exec_instr(nand, &op->instrs[i]); + if (ret) + break; + } + gpiod_set_value(nand->activecs->csgpio, 1); + + return ret; +} + +static int atmel_hsmc_exec_cmd_addr(struct nand_chip *chip, + const struct nand_subop *subop) +{ + struct atmel_nand *nand = to_atmel_nand(chip); + struct atmel_hsmc_nand_controller *nc; + unsigned int i, j; + + nc = to_hsmc_nand_controller(chip->controller); + + nc->op.cs = nand->activecs->id; + for (i = 0; i < subop->ninstrs; i++) { + const struct nand_op_instr *instr = &subop->instrs[i]; + + if (instr->type == NAND_OP_CMD_INSTR) { + nc->op.cmds[nc->op.ncmds++] = instr->ctx.cmd.opcode; + continue; + } + + for (j = nand_subop_get_addr_start_off(subop, i); + j < nand_subop_get_num_addr_cyc(subop, i); j++) { + nc->op.addrs[nc->op.naddrs] = instr->ctx.addr.addrs[j]; + nc->op.naddrs++; + } + } + + return atmel_nfc_exec_op(nc, true); +} + +static int atmel_hsmc_exec_rw(struct nand_chip *chip, + const struct nand_subop *subop) +{ + const struct nand_op_instr *instr = subop->instrs; + struct atmel_nand *nand = to_atmel_nand(chip); + + if (instr->type == NAND_OP_DATA_IN_INSTR) + atmel_nand_data_in(nand, instr->ctx.data.buf.in, + instr->ctx.data.len, + instr->ctx.data.force_8bit); + else + atmel_nand_data_out(nand, instr->ctx.data.buf.out, + instr->ctx.data.len, + instr->ctx.data.force_8bit); + + return 0; +} + +static int atmel_hsmc_exec_waitrdy(struct nand_chip *chip, + const struct nand_subop *subop) +{ + const struct nand_op_instr *instr = subop->instrs; + struct atmel_nand *nand = to_atmel_nand(chip); + + return atmel_hsmc_nand_waitrdy(nand, instr->ctx.waitrdy.timeout_ms); +} + +static const struct nand_op_parser atmel_hsmc_op_parser = NAND_OP_PARSER( + NAND_OP_PARSER_PATTERN(atmel_hsmc_exec_cmd_addr, + NAND_OP_PARSER_PAT_CMD_ELEM(true), + NAND_OP_PARSER_PAT_ADDR_ELEM(true, 5), + NAND_OP_PARSER_PAT_CMD_ELEM(true)), + NAND_OP_PARSER_PATTERN(atmel_hsmc_exec_rw, + NAND_OP_PARSER_PAT_DATA_IN_ELEM(false, 0)), + NAND_OP_PARSER_PATTERN(atmel_hsmc_exec_rw, + NAND_OP_PARSER_PAT_DATA_OUT_ELEM(false, 0)), + NAND_OP_PARSER_PATTERN(atmel_hsmc_exec_waitrdy, + NAND_OP_PARSER_PAT_WAITRDY_ELEM(false)), +); + +static int atmel_hsmc_nand_exec_op(struct atmel_nand *nand, + const struct nand_operation *op, + bool check_only) +{ + int ret; + + if (check_only) + return nand_op_parser_exec_op(&nand->base, + &atmel_hsmc_op_parser, op, true); + + atmel_hsmc_nand_select_target(nand, op->cs); + ret = nand_op_parser_exec_op(&nand->base, &atmel_hsmc_op_parser, op, + false); + + return ret; +} + static void atmel_nfc_copy_to_sram(struct nand_chip *chip, const u8 *buf, bool oob_required) { @@ -904,6 +1153,7 @@ static int atmel_hsmc_nand_pmecc_write_pg(struct nand_chip *chip, struct atmel_hsmc_nand_controller *nc; int ret; + atmel_hsmc_nand_select_target(nand, chip->cur_cs); nc = to_hsmc_nand_controller(chip->controller); atmel_nfc_copy_to_sram(chip, buf, false); @@ -964,6 +1214,7 @@ static int atmel_hsmc_nand_pmecc_read_pg(struct nand_chip *chip, u8 *buf, struct atmel_hsmc_nand_controller *nc; int ret; + atmel_hsmc_nand_select_target(nand, chip->cur_cs); nc = to_hsmc_nand_controller(chip->controller); /* @@ -1450,6 +1701,18 @@ static int atmel_nand_setup_interface(struct nand_chip *chip, int csline, return nc->caps->ops->setup_interface(nand, csline, conf); } +static int atmel_nand_exec_op(struct nand_chip *chip, + const struct nand_operation *op, + bool check_only) +{ + struct atmel_nand *nand = to_atmel_nand(chip); + struct atmel_nand_controller *nc; + + nc = to_nand_controller(nand->base.controller); + + return nc->caps->ops->exec_op(nand, op, check_only); +} + static void atmel_nand_init(struct atmel_nand_controller *nc, struct atmel_nand *nand) { @@ -1940,6 +2203,7 @@ static int atmel_nand_attach_chip(struct nand_chip *chip) static const struct nand_controller_ops atmel_nand_controller_ops = { .attach_chip = atmel_nand_attach_chip, .setup_interface = atmel_nand_setup_interface, + .exec_op = atmel_nand_exec_op, }; static int atmel_nand_controller_init(struct atmel_nand_controller *nc, @@ -2307,6 +2571,7 @@ static const struct atmel_nand_controller_ops atmel_hsmc_nc_ops = { .ecc_init = atmel_hsmc_nand_ecc_init, .nand_init = atmel_hsmc_nand_init, .setup_interface = atmel_hsmc_nand_setup_interface, + .exec_op = atmel_hsmc_nand_exec_op, }; static const struct atmel_nand_controller_caps atmel_sama5_nc_caps = { @@ -2373,6 +2638,7 @@ static const struct atmel_nand_controller_ops at91rm9200_nc_ops = { .remove = atmel_smc_nand_controller_remove, .ecc_init = atmel_nand_ecc_init, .nand_init = atmel_smc_nand_init, + .exec_op = atmel_smc_nand_exec_op, }; static const struct atmel_nand_controller_caps atmel_rm9200_nc_caps = { @@ -2388,6 +2654,7 @@ static const struct atmel_nand_controller_ops atmel_smc_nc_ops = { .ecc_init = atmel_nand_ecc_init, .nand_init = atmel_smc_nand_init, .setup_interface = atmel_smc_nand_setup_interface, + .exec_op = atmel_smc_nand_exec_op, }; static const struct atmel_nand_controller_caps atmel_sam9260_nc_caps = { From 4bc0224323994555010fbb9de4408618d24b5811 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 20 Jul 2020 16:13:56 +0300 Subject: [PATCH 26/49] mtd: rawnand: atmel: Get rid of the legacy interface implementation Now that exec_op() is implemented, we can get rid of all the legacy hooks. Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Tested-by: Tudor Ambarus Signed-off-by: Tudor Ambarus Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200720131356.1579073-7-tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 198 +------------------ 1 file changed, 1 insertion(+), 197 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 3847f4aeff32..8916a97cafa9 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -417,133 +417,6 @@ err: return -EIO; } -static u8 atmel_nand_read_byte(struct nand_chip *chip) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - - return ioread8(nand->activecs->io.virt); -} - -static void atmel_nand_write_byte(struct nand_chip *chip, u8 byte) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - - if (chip->options & NAND_BUSWIDTH_16) - iowrite16(byte | (byte << 8), nand->activecs->io.virt); - else - iowrite8(byte, nand->activecs->io.virt); -} - -static void atmel_nand_read_buf(struct nand_chip *chip, u8 *buf, int len) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - struct atmel_nand_controller *nc; - - nc = to_nand_controller(chip->controller); - - /* - * If the controller supports DMA, the buffer address is DMA-able and - * len is long enough to make DMA transfers profitable, let's trigger - * a DMA transfer. If it fails, fallback to PIO mode. - */ - if (nc->dmac && virt_addr_valid(buf) && - len >= MIN_DMA_LEN && - !atmel_nand_dma_transfer(nc, buf, nand->activecs->io.dma, len, - DMA_FROM_DEVICE)) - return; - - if (chip->options & NAND_BUSWIDTH_16) - ioread16_rep(nand->activecs->io.virt, buf, len / 2); - else - ioread8_rep(nand->activecs->io.virt, buf, len); -} - -static void atmel_nand_write_buf(struct nand_chip *chip, const u8 *buf, int len) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - struct atmel_nand_controller *nc; - - nc = to_nand_controller(chip->controller); - - /* - * If the controller supports DMA, the buffer address is DMA-able and - * len is long enough to make DMA transfers profitable, let's trigger - * a DMA transfer. If it fails, fallback to PIO mode. - */ - if (nc->dmac && virt_addr_valid(buf) && - len >= MIN_DMA_LEN && - !atmel_nand_dma_transfer(nc, (void *)buf, nand->activecs->io.dma, - len, DMA_TO_DEVICE)) - return; - - if (chip->options & NAND_BUSWIDTH_16) - iowrite16_rep(nand->activecs->io.virt, buf, len / 2); - else - iowrite8_rep(nand->activecs->io.virt, buf, len); -} - -static int atmel_nand_dev_ready(struct nand_chip *chip) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - - return gpiod_get_value(nand->activecs->rb.gpio); -} - -static void atmel_nand_select_chip(struct nand_chip *chip, int cs) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - - if (cs < 0 || cs >= nand->numcs) { - nand->activecs = NULL; - chip->legacy.dev_ready = NULL; - return; - } - - nand->activecs = &nand->cs[cs]; - - if (nand->activecs->rb.type == ATMEL_NAND_GPIO_RB) - chip->legacy.dev_ready = atmel_nand_dev_ready; -} - -static int atmel_hsmc_nand_dev_ready(struct nand_chip *chip) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - struct atmel_hsmc_nand_controller *nc; - u32 status; - - nc = to_hsmc_nand_controller(chip->controller); - - regmap_read(nc->base.smc, ATMEL_HSMC_NFC_SR, &status); - - return status & ATMEL_HSMC_NFC_SR_RBEDGE(nand->activecs->rb.id); -} - -static void atmel_hsmc_nand_select_chip(struct nand_chip *chip, int cs) -{ - struct mtd_info *mtd = nand_to_mtd(chip); - struct atmel_nand *nand = to_atmel_nand(chip); - struct atmel_hsmc_nand_controller *nc; - - nc = to_hsmc_nand_controller(chip->controller); - - atmel_nand_select_chip(chip, cs); - - if (!nand->activecs) - return; - - if (nand->activecs->rb.type == ATMEL_NAND_NATIVE_RB) - chip->legacy.dev_ready = atmel_hsmc_nand_dev_ready; - - regmap_update_bits(nc->base.smc, ATMEL_HSMC_NFC_CFG, - ATMEL_HSMC_NFC_CFG_PAGESIZE_MASK | - ATMEL_HSMC_NFC_CFG_SPARESIZE_MASK | - ATMEL_HSMC_NFC_CFG_RSPARE | - ATMEL_HSMC_NFC_CFG_WSPARE, - ATMEL_HSMC_NFC_CFG_PAGESIZE(mtd->writesize) | - ATMEL_HSMC_NFC_CFG_SPARESIZE(mtd->oobsize) | - ATMEL_HSMC_NFC_CFG_RSPARE); -} - static int atmel_nfc_exec_op(struct atmel_hsmc_nand_controller *nc, bool poll) { u8 *addrs = nc->op.addrs; @@ -594,53 +467,6 @@ static int atmel_nfc_exec_op(struct atmel_hsmc_nand_controller *nc, bool poll) return ret; } -static void atmel_hsmc_nand_cmd_ctrl(struct nand_chip *chip, int dat, - unsigned int ctrl) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - struct atmel_hsmc_nand_controller *nc; - - nc = to_hsmc_nand_controller(chip->controller); - - if (ctrl & NAND_ALE) { - if (nc->op.naddrs == ATMEL_NFC_MAX_ADDR_CYCLES) - return; - - nc->op.addrs[nc->op.naddrs++] = dat; - } else if (ctrl & NAND_CLE) { - if (nc->op.ncmds > 1) - return; - - nc->op.cmds[nc->op.ncmds++] = dat; - } - - if (dat == NAND_CMD_NONE) { - nc->op.cs = nand->activecs->id; - atmel_nfc_exec_op(nc, true); - } -} - -static void atmel_nand_cmd_ctrl(struct nand_chip *chip, int cmd, - unsigned int ctrl) -{ - struct atmel_nand *nand = to_atmel_nand(chip); - struct atmel_nand_controller *nc; - - nc = to_nand_controller(chip->controller); - - if ((ctrl & NAND_CTRL_CHANGE) && nand->activecs->csgpio) { - if (ctrl & NAND_NCE) - gpiod_set_value(nand->activecs->csgpio, 0); - else - gpiod_set_value(nand->activecs->csgpio, 1); - } - - if (ctrl & NAND_ALE) - writeb(cmd, nand->activecs->io.virt + nc->caps->ale_offs); - else if (ctrl & NAND_CLE) - writeb(cmd, nand->activecs->io.virt + nc->caps->cle_offs); -} - static void atmel_nand_data_in(struct atmel_nand *nand, void *buf, unsigned int len, bool force_8bit) { @@ -1722,19 +1548,9 @@ static void atmel_nand_init(struct atmel_nand_controller *nc, mtd->dev.parent = nc->dev; nand->base.controller = &nc->base; - chip->legacy.cmd_ctrl = atmel_nand_cmd_ctrl; - chip->legacy.read_byte = atmel_nand_read_byte; - chip->legacy.write_byte = atmel_nand_write_byte; - chip->legacy.read_buf = atmel_nand_read_buf; - chip->legacy.write_buf = atmel_nand_write_buf; - chip->legacy.select_chip = atmel_nand_select_chip; - if (!nc->mck || !nc->caps->ops->setup_interface) chip->options |= NAND_KEEP_TIMINGS; - /* Some NANDs require a longer delay than the default one (20us). */ - chip->legacy.chip_delay = 40; - /* * Use a bounce buffer when the buffer passed by the MTD user is not * suitable for DMA. @@ -1773,18 +1589,6 @@ static void atmel_smc_nand_init(struct atmel_nand_controller *nc, smc_nc->ebi_csa->nfd0_on_d16); } -static void atmel_hsmc_nand_init(struct atmel_nand_controller *nc, - struct atmel_nand *nand) -{ - struct nand_chip *chip = &nand->base; - - atmel_nand_init(nc, nand); - - /* Overload some methods for the HSMC controller. */ - chip->legacy.cmd_ctrl = atmel_hsmc_nand_cmd_ctrl; - chip->legacy.select_chip = atmel_hsmc_nand_select_chip; -} - static int atmel_nand_controller_remove_nand(struct atmel_nand *nand) { struct nand_chip *chip = &nand->base; @@ -2569,7 +2373,7 @@ static const struct atmel_nand_controller_ops atmel_hsmc_nc_ops = { .probe = atmel_hsmc_nand_controller_probe, .remove = atmel_hsmc_nand_controller_remove, .ecc_init = atmel_hsmc_nand_ecc_init, - .nand_init = atmel_hsmc_nand_init, + .nand_init = atmel_nand_init, .setup_interface = atmel_hsmc_nand_setup_interface, .exec_op = atmel_hsmc_nand_exec_op, }; From ab16f54ef3cdb6bbc06a36f636a89e6db8a6cea3 Mon Sep 17 00:00:00 2001 From: Christophe Kerello Date: Tue, 21 Jul 2020 11:52:07 +0200 Subject: [PATCH 27/49] mtd: rawnand: stm32_fmc2: fix a buffer overflow This patch solves following static checker warning: drivers/mtd/nand/raw/stm32_fmc2_nand.c:350 stm32_fmc2_nfc_select_chip() error: buffer overflow 'nfc->data_phys_addr' 2 <= 2 The CS value can only be 0 or 1. Signed-off-by: Christophe Kerello Fixes: 2cd457f328c1 ("mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver") Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/1595325127-32693-1-git-send-email-christophe.kerello@st.com --- drivers/mtd/nand/raw/stm32_fmc2_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c index ba679d2cc743..b31a5818234d 100644 --- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c +++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c @@ -1763,7 +1763,7 @@ static int stm32_fmc2_nfc_parse_child(struct stm32_fmc2_nfc *nfc, return ret; } - if (cs > FMC2_MAX_CE) { + if (cs >= FMC2_MAX_CE) { dev_err(nfc->dev, "invalid reg value: %d\n", cs); return -EINVAL; } From ab78e6a6cef34d0b7eefd0d8a78308cfe7bd7737 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 21 Jul 2020 23:16:57 +0800 Subject: [PATCH 28/49] mtd: rawnand: pasemi: Make pasemi_device_ready() static The sparse tool complains as follows: drivers/mtd/nand/raw/pasemi_nand.c:71:5: warning: symbol 'pasemi_device_ready' was not declared. Should it be static? This function is not used outside of pasemi_nand.c, so this commit marks it static. Reported-by: Hulk Robot Signed-off-by: Wei Yongjun Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200721151657.41027-1-weiyongjun1@huawei.com --- drivers/mtd/nand/raw/pasemi_nand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/pasemi_nand.c b/drivers/mtd/nand/raw/pasemi_nand.c index 155e8c8f61e2..2b8f155cc0c5 100644 --- a/drivers/mtd/nand/raw/pasemi_nand.c +++ b/drivers/mtd/nand/raw/pasemi_nand.c @@ -68,7 +68,7 @@ static void pasemi_hwcontrol(struct nand_chip *chip, int cmd, inl(lpcctl); } -int pasemi_device_ready(struct nand_chip *chip) +static int pasemi_device_ready(struct nand_chip *chip) { return !!(inl(lpcctl) & LBICTRL_LPCCTL_NR); } From 051e070d0a019df6be9e21be1fb63352e4c4412e Mon Sep 17 00:00:00 2001 From: YouChing Lin Date: Wed, 22 Jul 2020 16:02:57 +0800 Subject: [PATCH 29/49] mtd: spinand: macronix: Add support for MX31LF1GE4BC The Macronix MX31LF1GE4BC is a 3V, 1Gbit (128MB) serial NAND flash device. Validated by read, erase, read back, write and read back on Xilinx Zynq PicoZed FPGA board which included Macronix SPI Host (driver/spi/spi-mxic.c). Signed-off-by: YouChing Lin Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/1595404978-31079-2-git-send-email-ycllin@mxic.com.tw --- drivers/mtd/nand/spi/macronix.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c index 9ff8debd5994..9ae48ce1c46f 100644 --- a/drivers/mtd/nand/spi/macronix.c +++ b/drivers/mtd/nand/spi/macronix.c @@ -119,6 +119,16 @@ static const struct spinand_info macronix_spinand_table[] = { &update_cache_variants), SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, NULL)), + SPINAND_INFO("MX31LF1GE4BC", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x1e), + NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), + NAND_ECCREQ(8, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + 0 /*SPINAND_HAS_QE_BIT*/, + SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, + mx35lf1ge4ab_ecc_get_status)), }; static const struct spinand_manufacturer_ops macronix_spinand_manuf_ops = { From 75b049bb7f89a58a25592f17baf91d703f0f548e Mon Sep 17 00:00:00 2001 From: YouChing Lin Date: Wed, 22 Jul 2020 16:02:58 +0800 Subject: [PATCH 30/49] mtd: spinand: macronix: Add support for MX31UF1GE4BC The Macronix MX31UF1GE4BC is a 1.8V, 1Gbit (128MB) serial NAND flash device. Validated by read, erase, read back, write and read back on Xilinx Zynq PicoZed FPGA board which included Macronix SPI Host (driver/spi/spi-mxic.c). Signed-off-by: YouChing Lin Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/1595404978-31079-3-git-send-email-ycllin@mxic.com.tw --- drivers/mtd/nand/spi/macronix.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c index 9ae48ce1c46f..8e801e4c3a00 100644 --- a/drivers/mtd/nand/spi/macronix.c +++ b/drivers/mtd/nand/spi/macronix.c @@ -129,6 +129,16 @@ static const struct spinand_info macronix_spinand_table[] = { 0 /*SPINAND_HAS_QE_BIT*/, SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, mx35lf1ge4ab_ecc_get_status)), + SPINAND_INFO("MX31UF1GE4BC", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x9e), + NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1), + NAND_ECCREQ(8, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants, + &write_cache_variants, + &update_cache_variants), + 0 /*SPINAND_HAS_QE_BIT*/, + SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout, + mx35lf1ge4ab_ecc_get_status)), }; static const struct spinand_manufacturer_ops macronix_spinand_manuf_ops = { From d43511d05cd41c987c26a122c4c49cae382c5c99 Mon Sep 17 00:00:00 2001 From: Pavel Machek Date: Fri, 24 Jul 2020 10:38:25 +0200 Subject: [PATCH 31/49] mtd: rawnand: oxnas: cleanup/simplify code Simplify oxnas_nand_probe. Signed-off-by: Pavel Machek (CIP) Acked-by: Neil Armstrong Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200724083825.GA31437@amd --- drivers/mtd/nand/raw/oxnas_nand.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/oxnas_nand.c b/drivers/mtd/nand/raw/oxnas_nand.c index 8d0d76ad319d..f44947043e5a 100644 --- a/drivers/mtd/nand/raw/oxnas_nand.c +++ b/drivers/mtd/nand/raw/oxnas_nand.c @@ -144,8 +144,7 @@ static int oxnas_nand_probe(struct platform_device *pdev) if (err) goto err_cleanup_nand; - oxnas->chips[oxnas->nchips] = chip; - ++oxnas->nchips; + oxnas->chips[oxnas->nchips++] = chip; } /* Exit if no chips found */ From cb7dc3178a9862614b1e7567d77f4679f027a074 Mon Sep 17 00:00:00 2001 From: Evgeny Novikov Date: Thu, 6 Aug 2020 10:26:34 +0300 Subject: [PATCH 32/49] mtd: rawnand: vf610: disable clk on error handling path in probe vf610_nfc_probe() does not invoke clk_disable_unprepare() on one error handling path. The patch fixes that. Found by Linux Driver Verification project (linuxtesting.org). Fixes: 6f0ce4dfc5a3 ("mtd: rawnand: vf610: Avoid a potential NULL pointer dereference") Signed-off-by: Evgeny Novikov Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200806072634.23528-1-novikov@ispras.ru --- drivers/mtd/nand/raw/vf610_nfc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/vf610_nfc.c b/drivers/mtd/nand/raw/vf610_nfc.c index 50dc0c93140c..3c4090bd3f28 100644 --- a/drivers/mtd/nand/raw/vf610_nfc.c +++ b/drivers/mtd/nand/raw/vf610_nfc.c @@ -852,8 +852,10 @@ static int vf610_nfc_probe(struct platform_device *pdev) } of_id = of_match_device(vf610_nfc_dt_ids, &pdev->dev); - if (!of_id) - return -ENODEV; + if (!of_id) { + err = -ENODEV; + goto err_disable_clk; + } nfc->variant = (enum vf610_nfc_variant)of_id->data; From 6387ad9caf8f09747a8569e5876086b72ee9382c Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 20 Aug 2020 18:51:19 +0200 Subject: [PATCH 33/49] mtd: spinand: gigadevice: Only one dummy byte in QUADIO The datasheet only lists one dummy byte in the 0xEH operation for the following chips: * GD5F1GQ4xExxG * GD5F1GQ4xFxxG * GD5F1GQ4UAYIG * GD5F4GQ4UAYIG Fixes: c93c613214ac ("mtd: spinand: add support for GigaDevice GD5FxGQ4xA") Signed-off-by: Hauke Mehrtens Tested-by: Chuanhong Guo Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200820165121.3192-2-hauke@hauke-m.de --- drivers/mtd/nand/spi/gigadevice.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c index d219c970042a..679d3c43e15a 100644 --- a/drivers/mtd/nand/spi/gigadevice.c +++ b/drivers/mtd/nand/spi/gigadevice.c @@ -21,7 +21,7 @@ #define GD5FXGQ4UXFXXG_STATUS_ECC_UNCOR_ERROR (7 << 4) static SPINAND_OP_VARIANTS(read_cache_variants, - SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0), @@ -29,7 +29,7 @@ static SPINAND_OP_VARIANTS(read_cache_variants, SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0)); static SPINAND_OP_VARIANTS(read_cache_variants_f, - SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0), + SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_X4_OP_3A(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0), SPINAND_PAGE_READ_FROM_CACHE_X2_OP_3A(0, 1, NULL, 0), From aea7687e77bebce5b67fab9d03347bd8df7933c7 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 20 Aug 2020 18:51:20 +0200 Subject: [PATCH 34/49] mtd: spinand: gigadevice: Add QE Bit The following GigaDevice chips have the QE BIT in the feature flags, I checked the datasheets, but did not try this. * GD5F1GQ4xExxG * GD5F1GQ4xFxxG * GD5F1GQ4UAYIG * GD5F4GQ4UAYIG The Quad operations like 0xEB mention that the QE bit has to be set. Fixes: c93c613214ac ("mtd: spinand: add support for GigaDevice GD5FxGQ4xA") Signed-off-by: Hauke Mehrtens Tested-by: Chuanhong Guo Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200820165121.3192-3-hauke@hauke-m.de --- drivers/mtd/nand/spi/gigadevice.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c index 679d3c43e15a..0b7667e60780 100644 --- a/drivers/mtd/nand/spi/gigadevice.c +++ b/drivers/mtd/nand/spi/gigadevice.c @@ -202,7 +202,7 @@ static const struct spinand_info gigadevice_spinand_table[] = { SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), - 0, + SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout, gd5fxgq4xa_ecc_get_status)), SPINAND_INFO("GD5F2GQ4xA", @@ -212,7 +212,7 @@ static const struct spinand_info gigadevice_spinand_table[] = { SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), - 0, + SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout, gd5fxgq4xa_ecc_get_status)), SPINAND_INFO("GD5F4GQ4xA", @@ -222,7 +222,7 @@ static const struct spinand_info gigadevice_spinand_table[] = { SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), - 0, + SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout, gd5fxgq4xa_ecc_get_status)), SPINAND_INFO("GD5F1GQ4UExxG", @@ -232,7 +232,7 @@ static const struct spinand_info gigadevice_spinand_table[] = { SPINAND_INFO_OP_VARIANTS(&read_cache_variants, &write_cache_variants, &update_cache_variants), - 0, + SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&gd5fxgq4_variant2_ooblayout, gd5fxgq4uexxg_ecc_get_status)), SPINAND_INFO("GD5F1GQ4UFxxG", @@ -242,7 +242,7 @@ static const struct spinand_info gigadevice_spinand_table[] = { SPINAND_INFO_OP_VARIANTS(&read_cache_variants_f, &write_cache_variants, &update_cache_variants), - 0, + SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&gd5fxgq4_variant2_ooblayout, gd5fxgq4ufxxg_ecc_get_status)), }; From 302d8a2288529c44401d946de09526009e4f7124 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 20 Aug 2020 18:51:21 +0200 Subject: [PATCH 35/49] mtd: spinand: gigadevice: Add support for GD5F4GQ4xC This adds support for the following 4GiB chips: GD5F4GQ4RCYIG 1.8V GD5F4GQ4UCYIG 3.3V The datasheet can be found here: https://www.novitronic.ch/sixcms/media.php/2/DS-00173-GD5F4GQ4xCxIG-Rev1.574695.pdf The GD5F4GQ4UCYIGT (3.3V) version is used on the Imagination Technologies Creator Ci40 (Marduk), the 1.8V version was not tested. This device only works in single SPI mode and not in dual or quad mode for me on this board. Signed-off-by: Hauke Mehrtens Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200820165121.3192-4-hauke@hauke-m.de --- drivers/mtd/nand/spi/gigadevice.c | 49 +++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c index 0b7667e60780..33c67403c4aa 100644 --- a/drivers/mtd/nand/spi/gigadevice.c +++ b/drivers/mtd/nand/spi/gigadevice.c @@ -132,6 +132,35 @@ static const struct mtd_ooblayout_ops gd5fxgq4_variant2_ooblayout = { .free = gd5fxgq4_variant2_ooblayout_free, }; +static int gd5fxgq4xc_ooblayout_256_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + if (section) + return -ERANGE; + + oobregion->offset = 128; + oobregion->length = 128; + + return 0; +} + +static int gd5fxgq4xc_ooblayout_256_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + if (section) + return -ERANGE; + + oobregion->offset = 1; + oobregion->length = 127; + + return 0; +} + +static const struct mtd_ooblayout_ops gd5fxgq4xc_oob_256_ops = { + .ecc = gd5fxgq4xc_ooblayout_256_ecc, + .free = gd5fxgq4xc_ooblayout_256_free, +}; + static int gd5fxgq4uexxg_ecc_get_status(struct spinand_device *spinand, u8 status) { @@ -225,6 +254,26 @@ static const struct spinand_info gigadevice_spinand_table[] = { SPINAND_HAS_QE_BIT, SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout, gd5fxgq4xa_ecc_get_status)), + SPINAND_INFO("GD5F4GQ4RC", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE, 0xa4, 0x68), + NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), + NAND_ECCREQ(8, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants_f, + &write_cache_variants, + &update_cache_variants), + SPINAND_HAS_QE_BIT, + SPINAND_ECCINFO(&gd5fxgq4xc_oob_256_ops, + gd5fxgq4ufxxg_ecc_get_status)), + SPINAND_INFO("GD5F4GQ4UC", + SPINAND_ID(SPINAND_READID_METHOD_OPCODE, 0xb4, 0x68), + NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1), + NAND_ECCREQ(8, 512), + SPINAND_INFO_OP_VARIANTS(&read_cache_variants_f, + &write_cache_variants, + &update_cache_variants), + SPINAND_HAS_QE_BIT, + SPINAND_ECCINFO(&gd5fxgq4xc_oob_256_ops, + gd5fxgq4ufxxg_ecc_get_status)), SPINAND_INFO("GD5F1GQ4UExxG", SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xd1), NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1), From 85a3ebbb7fe869188644498c49bf3719d9cb054d Mon Sep 17 00:00:00 2001 From: Chris Packham Date: Fri, 28 Aug 2020 13:12:37 +1200 Subject: [PATCH 36/49] mtd: rawnand: marvell: Support panic_write for mtdoops Under a panic context we can't get an interrupt. Actively poll for the RB status when performing a panic_write. Signed-off-by: Chris Packham Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200828011237.22066-1-chris.packham@alliedtelesis.co.nz --- drivers/mtd/nand/raw/marvell_nand.c | 38 +++++++++++++++++++++++++---- 1 file changed, 33 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c index f7ff8e93a249..8d76ef41099b 100644 --- a/drivers/mtd/nand/raw/marvell_nand.c +++ b/drivers/mtd/nand/raw/marvell_nand.c @@ -685,9 +685,31 @@ static int marvell_nfc_wait_cmdd(struct nand_chip *chip) return marvell_nfc_end_cmd(chip, cs_flag, "CMDD"); } +static int marvell_nfc_poll_status(struct marvell_nfc *nfc, u32 mask, + u32 expected_val, unsigned long timeout_ms) +{ + unsigned long limit; + u32 st; + + limit = jiffies + msecs_to_jiffies(timeout_ms); + do { + st = readl_relaxed(nfc->regs + NDSR); + if (st & NDSR_RDY(1)) + st |= NDSR_RDY(0); + + if ((st & mask) == expected_val) + return 0; + + cpu_relax(); + } while (time_after(limit, jiffies)); + + return -ETIMEDOUT; +} + static int marvell_nfc_wait_op(struct nand_chip *chip, unsigned int timeout_ms) { struct marvell_nfc *nfc = to_marvell_nfc(chip->controller); + struct mtd_info *mtd = nand_to_mtd(chip); u32 pending; int ret; @@ -695,12 +717,18 @@ static int marvell_nfc_wait_op(struct nand_chip *chip, unsigned int timeout_ms) if (!timeout_ms) timeout_ms = IRQ_TIMEOUT; - init_completion(&nfc->complete); + if (mtd->oops_panic_write) { + ret = marvell_nfc_poll_status(nfc, NDSR_RDY(0), + NDSR_RDY(0), + timeout_ms); + } else { + init_completion(&nfc->complete); - marvell_nfc_enable_int(nfc, NDCR_RDYM); - ret = wait_for_completion_timeout(&nfc->complete, - msecs_to_jiffies(timeout_ms)); - marvell_nfc_disable_int(nfc, NDCR_RDYM); + marvell_nfc_enable_int(nfc, NDCR_RDYM); + ret = wait_for_completion_timeout(&nfc->complete, + msecs_to_jiffies(timeout_ms)); + marvell_nfc_disable_int(nfc, NDCR_RDYM); + } pending = marvell_nfc_clear_int(nfc, NDSR_RDY(0) | NDSR_RDY(1)); /* From 28acb2ce42c44acb11dd5825594d8dff99a2eb4a Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 1 Sep 2020 16:25:30 +0200 Subject: [PATCH 37/49] mtd: onenand: Simplify with dev_err_probe() Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200901142535.12819-1-krzk@kernel.org --- drivers/mtd/nand/onenand/onenand_omap2.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/mtd/nand/onenand/onenand_omap2.c b/drivers/mtd/nand/onenand/onenand_omap2.c index aa9368bf7a0c..d8c0bd002c2b 100644 --- a/drivers/mtd/nand/onenand/onenand_omap2.c +++ b/drivers/mtd/nand/onenand/onenand_omap2.c @@ -494,11 +494,8 @@ static int omap2_onenand_probe(struct platform_device *pdev) c->int_gpiod = devm_gpiod_get_optional(dev, "int", GPIOD_IN); if (IS_ERR(c->int_gpiod)) { - r = PTR_ERR(c->int_gpiod); /* Just try again if this happens */ - if (r != -EPROBE_DEFER) - dev_err(dev, "error getting gpio: %d\n", r); - return r; + return dev_err_probe(dev, PTR_ERR(c->int_gpiod), "error getting gpio\n"); } if (c->int_gpiod) { From 1caa7522fad54d8439dae8515d0a89f3fabc65a7 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 1 Sep 2020 16:25:31 +0200 Subject: [PATCH 38/49] mtd: rawnand: atmel: Simplify with dev_err_probe() Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Alexandre Belloni Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200901142535.12819-2-krzk@kernel.org --- drivers/mtd/nand/raw/atmel/nand-controller.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 8916a97cafa9..309ce410d792 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -2027,13 +2027,9 @@ static int atmel_nand_controller_init(struct atmel_nand_controller *nc, platform_set_drvdata(pdev, nc); nc->pmecc = devm_atmel_pmecc_get(dev); - if (IS_ERR(nc->pmecc)) { - ret = PTR_ERR(nc->pmecc); - if (ret != -EPROBE_DEFER) - dev_err(dev, "Could not get PMECC object (err = %d)\n", - ret); - return ret; - } + if (IS_ERR(nc->pmecc)) + return dev_err_probe(dev, PTR_ERR(nc->pmecc), + "Could not get PMECC object\n"); if (nc->caps->has_dma && !atmel_nand_avoid_dma) { dma_cap_mask_t mask; From 78a73491662aae0cbb3e46f0366d1b45e6027071 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 1 Sep 2020 16:25:32 +0200 Subject: [PATCH 39/49] mtd: rawnand: gpmi: Simplify with dev_err_probe() Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200901142535.12819-3-krzk@kernel.org --- drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c index 86dc83d0de8e..dc8104e67506 100644 --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c @@ -1004,10 +1004,8 @@ static int acquire_dma_channels(struct gpmi_nand_data *this) /* request dma channel */ dma_chan = dma_request_chan(&pdev->dev, "rx-tx"); if (IS_ERR(dma_chan)) { - ret = PTR_ERR(dma_chan); - if (ret != -EPROBE_DEFER) - dev_err(this->dev, "DMA channel request failed: %d\n", - ret); + ret = dev_err_probe(this->dev, PTR_ERR(dma_chan), + "DMA channel request failed\n"); release_dma_channels(this); } else { this->dma_chans[0] = dma_chan; From 6ce92faeefc0182b544cceec16392df734c35b5d Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 1 Sep 2020 16:25:33 +0200 Subject: [PATCH 40/49] mtd: rawnand: marvell: Simplify with dev_err_probe() Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200901142535.12819-4-krzk@kernel.org --- drivers/mtd/nand/raw/marvell_nand.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c index 8d76ef41099b..970ba1ec8b43 100644 --- a/drivers/mtd/nand/raw/marvell_nand.c +++ b/drivers/mtd/nand/raw/marvell_nand.c @@ -2790,10 +2790,7 @@ static int marvell_nfc_init_dma(struct marvell_nfc *nfc) if (IS_ERR(nfc->dma_chan)) { ret = PTR_ERR(nfc->dma_chan); nfc->dma_chan = NULL; - if (ret != -EPROBE_DEFER) - dev_err(nfc->dev, "DMA channel request failed: %d\n", - ret); - return ret; + return dev_err_probe(nfc->dev, ret, "DMA channel request failed\n"); } r = platform_get_resource(pdev, IORESOURCE_MEM, 0); From c4bc1ec9ae570156e126bb34b08ec92d92f7ead9 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 1 Sep 2020 16:25:34 +0200 Subject: [PATCH 41/49] mtd: rawnand: marvell: Fix and update kerneldoc Fix kerneldoc comments and add missing documentation for members to fix W=1 compile warnings like: drivers/mtd/nand/raw/marvell_nand.c:251: warning: cannot understand function prototype: 'struct marvell_hw_ecc_layout ' drivers/mtd/nand/raw/marvell_nand.c:342: warning: Function parameter or member 'layout' not described in 'marvell_nand_chip' Signed-off-by: Krzysztof Kozlowski Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200901142535.12819-5-krzk@kernel.org --- drivers/mtd/nand/raw/marvell_nand.c | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c index 970ba1ec8b43..f5ca2002d08e 100644 --- a/drivers/mtd/nand/raw/marvell_nand.c +++ b/drivers/mtd/nand/raw/marvell_nand.c @@ -227,6 +227,8 @@ #define XTYPE_MASK 7 /** + * struct marvell_hw_ecc_layout - layout of Marvell ECC + * * Marvell ECC engine works differently than the others, in order to limit the * size of the IP, hardware engineers chose to set a fixed strength at 16 bits * per subpage, and depending on a the desired strength needed by the NAND chip, @@ -292,6 +294,8 @@ static const struct marvell_hw_ecc_layout marvell_nfc_layouts[] = { }; /** + * struct marvell_nand_chip_sel - CS line description + * * The Nand Flash Controller has up to 4 CE and 2 RB pins. The CE selection * is made by a field in NDCB0 register, and in another field in NDCB2 register. * The datasheet describes the logic with an error: ADDR5 field is once @@ -312,14 +316,15 @@ struct marvell_nand_chip_sel { }; /** - * NAND chip structure: stores NAND chip device related information + * struct marvell_nand_chip - stores NAND chip device related information * * @chip: Base NAND chip structure * @node: Used to store NAND chips into a list - * @layout NAND layout when using hardware ECC + * @layout: NAND layout when using hardware ECC * @ndcr: Controller register value for this NAND chip * @ndtr0: Timing registers 0 value for this NAND chip * @ndtr1: Timing registers 1 value for this NAND chip + * @addr_cyc: Amount of cycles needed to pass column address * @selected_die: Current active CS * @nsels: Number of CS lines required by the NAND chip * @sels: Array of CS lines descriptions @@ -349,7 +354,8 @@ static inline struct marvell_nand_chip_sel *to_nand_sel(struct marvell_nand_chip } /** - * NAND controller capabilities for distinction between compatible strings + * struct marvell_nfc_caps - NAND controller capabilities for distinction + * between compatible strings * * @max_cs_nb: Number of Chip Select lines available * @max_rb_nb: Number of Ready/Busy lines available @@ -372,7 +378,7 @@ struct marvell_nfc_caps { }; /** - * NAND controller structure: stores Marvell NAND controller information + * struct marvell_nfc - stores Marvell NAND controller information * * @controller: Base controller structure * @dev: Parent device (used to print error messages) @@ -383,7 +389,9 @@ struct marvell_nfc_caps { * @assigned_cs: Bitmask describing already assigned CS lines * @chips: List containing all the NAND chips attached to * this NAND controller + * @selected_chip: Currently selected target chip * @caps: NAND controller capabilities for each compatible string + * @use_dma: Whetner DMA is used * @dma_chan: DMA channel (NFCv1 only) * @dma_buf: 32-bit aligned buffer for DMA transfers (NFCv1 only) */ @@ -411,7 +419,8 @@ static inline struct marvell_nfc *to_marvell_nfc(struct nand_controller *ctrl) } /** - * NAND controller timings expressed in NAND Controller clock cycles + * struct marvell_nfc_timings - NAND controller timings expressed in NAND + * Controller clock cycles * * @tRP: ND_nRE pulse width * @tRH: ND_nRE high duration @@ -455,8 +464,8 @@ struct marvell_nfc_timings { period_ns)) /** - * NAND driver structure filled during the parsing of the ->exec_op() subop - * subset of instructions. + * struct marvell_nfc_op - filled during the parsing of the ->exec_op() + * subop subset of instructions. * * @ndcb: Array of values written to NDCBx registers * @cle_ale_delay_ns: Optional delay after the last CMD or ADDR cycle From 07eb014faadd2e370032bc88ddbf3bf29e87411f Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Tue, 1 Sep 2020 16:25:35 +0200 Subject: [PATCH 42/49] mtd: rawnand: qcom: Simplify with dev_err_probe() Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200901142535.12819-6-krzk@kernel.org --- drivers/mtd/nand/raw/qcom_nandc.c | 24 ++++++++---------------- 1 file changed, 8 insertions(+), 16 deletions(-) diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c index 3d616e616b26..777fb0de0680 100644 --- a/drivers/mtd/nand/raw/qcom_nandc.c +++ b/drivers/mtd/nand/raw/qcom_nandc.c @@ -2702,10 +2702,8 @@ static int qcom_nandc_alloc(struct qcom_nand_controller *nandc) if (IS_ERR(nandc->tx_chan)) { ret = PTR_ERR(nandc->tx_chan); nandc->tx_chan = NULL; - if (ret != -EPROBE_DEFER) - dev_err(nandc->dev, - "tx DMA channel request failed: %d\n", - ret); + dev_err_probe(nandc->dev, ret, + "tx DMA channel request failed\n"); goto unalloc; } @@ -2713,10 +2711,8 @@ static int qcom_nandc_alloc(struct qcom_nand_controller *nandc) if (IS_ERR(nandc->rx_chan)) { ret = PTR_ERR(nandc->rx_chan); nandc->rx_chan = NULL; - if (ret != -EPROBE_DEFER) - dev_err(nandc->dev, - "rx DMA channel request failed: %d\n", - ret); + dev_err_probe(nandc->dev, ret, + "rx DMA channel request failed\n"); goto unalloc; } @@ -2724,10 +2720,8 @@ static int qcom_nandc_alloc(struct qcom_nand_controller *nandc) if (IS_ERR(nandc->cmd_chan)) { ret = PTR_ERR(nandc->cmd_chan); nandc->cmd_chan = NULL; - if (ret != -EPROBE_DEFER) - dev_err(nandc->dev, - "cmd DMA channel request failed: %d\n", - ret); + dev_err_probe(nandc->dev, ret, + "cmd DMA channel request failed\n"); goto unalloc; } @@ -2750,10 +2744,8 @@ static int qcom_nandc_alloc(struct qcom_nand_controller *nandc) if (IS_ERR(nandc->chan)) { ret = PTR_ERR(nandc->chan); nandc->chan = NULL; - if (ret != -EPROBE_DEFER) - dev_err(nandc->dev, - "rxtx DMA channel request failed: %d\n", - ret); + dev_err_probe(nandc->dev, ret, + "rxtx DMA channel request failed\n"); return ret; } } From f7721e4bfec16c9e95e26f4b66bc4574076822d9 Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Wed, 9 Sep 2020 21:43:18 +0800 Subject: [PATCH 43/49] mtd: rawnand: vf610: Remove unused function vf610_nfc_transfer_size() commit ecc40b8df59a ("mtd: rawnand: vf610_nfc: remove old hooks") left behind this, remove it. Signed-off-by: YueHaibing Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200909134318.36340-1-yuehaibing@huawei.com --- drivers/mtd/nand/raw/vf610_nfc.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/mtd/nand/raw/vf610_nfc.c b/drivers/mtd/nand/raw/vf610_nfc.c index 3c4090bd3f28..40d70f991d89 100644 --- a/drivers/mtd/nand/raw/vf610_nfc.c +++ b/drivers/mtd/nand/raw/vf610_nfc.c @@ -323,11 +323,6 @@ static inline void vf610_nfc_ecc_mode(struct vf610_nfc *nfc, int ecc_mode) CONFIG_ECC_MODE_SHIFT, ecc_mode); } -static inline void vf610_nfc_transfer_size(struct vf610_nfc *nfc, int size) -{ - vf610_nfc_write(nfc, NFC_SECTOR_SIZE, size); -} - static inline void vf610_nfc_run(struct vf610_nfc *nfc, u32 col, u32 row, u32 cmd1, u32 cmd2, u32 trfr_sz) { From d27c9859a0c2f270972c26df6b2d2cc69c6d30f4 Mon Sep 17 00:00:00 2001 From: Alex Dewar Date: Mon, 14 Sep 2020 22:42:44 +0100 Subject: [PATCH 44/49] mtd: rawnand: atmel: Check return values for nand_read_data_op In atmel_nand_pmecc_read_pg(), nand_read_data_op() is called twice without the return values being checked for errors. Add these checks. Signed-off-by: Alex Dewar Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200914214245.14626-1-alex.dewar90@gmail.com --- drivers/mtd/nand/raw/atmel/nand-controller.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c index 309ce410d792..e6ceec8f50dc 100644 --- a/drivers/mtd/nand/raw/atmel/nand-controller.c +++ b/drivers/mtd/nand/raw/atmel/nand-controller.c @@ -948,11 +948,17 @@ static int atmel_nand_pmecc_read_pg(struct nand_chip *chip, u8 *buf, if (ret) return ret; - nand_read_data_op(chip, buf, mtd->writesize, false, false); - nand_read_data_op(chip, chip->oob_poi, mtd->oobsize, false, false); + ret = nand_read_data_op(chip, buf, mtd->writesize, false, false); + if (ret) + goto out_disable; + + ret = nand_read_data_op(chip, chip->oob_poi, mtd->oobsize, false, false); + if (ret) + goto out_disable; ret = atmel_nand_pmecc_correct_data(chip, buf, raw); +out_disable: atmel_nand_pmecc_disable(chip, raw); return ret; From 6e88127904b837a0ade47eb2994feaa2b5fae437 Mon Sep 17 00:00:00 2001 From: Tudor Ambarus Date: Thu, 17 Sep 2020 10:52:12 +0300 Subject: [PATCH 45/49] mtd: rawnand: Introduce nand_set_ecc_on_host_ops() There were too many levels of indentation and the code was hard to read. Introduce a new function, similar to nand_set_ecc_soft_ops(). Signed-off-by: Tudor Ambarus Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200917075213.532161-3-tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/nand_base.c | 114 +++++++++++++++++-------------- 1 file changed, 61 insertions(+), 53 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index 3af9223e5240..c7f4ba975e2c 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5139,6 +5139,65 @@ static void nand_scan_ident_cleanup(struct nand_chip *chip) kfree(chip->parameters.onfi); } +static int nand_set_ecc_on_host_ops(struct nand_chip *chip) +{ + struct nand_ecc_ctrl *ecc = &chip->ecc; + + switch (ecc->placement) { + case NAND_ECC_PLACEMENT_UNKNOWN: + case NAND_ECC_PLACEMENT_OOB: + /* Use standard hwecc read page function? */ + if (!ecc->read_page) + ecc->read_page = nand_read_page_hwecc; + if (!ecc->write_page) + ecc->write_page = nand_write_page_hwecc; + if (!ecc->read_page_raw) + ecc->read_page_raw = nand_read_page_raw; + if (!ecc->write_page_raw) + ecc->write_page_raw = nand_write_page_raw; + if (!ecc->read_oob) + ecc->read_oob = nand_read_oob_std; + if (!ecc->write_oob) + ecc->write_oob = nand_write_oob_std; + if (!ecc->read_subpage) + ecc->read_subpage = nand_read_subpage; + if (!ecc->write_subpage && ecc->hwctl && ecc->calculate) + ecc->write_subpage = nand_write_subpage_hwecc; + fallthrough; + + case NAND_ECC_PLACEMENT_INTERLEAVED: + if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) && + (!ecc->read_page || + ecc->read_page == nand_read_page_hwecc || + !ecc->write_page || + ecc->write_page == nand_write_page_hwecc)) { + WARN(1, "No ECC functions supplied; hardware ECC not possible\n"); + return -EINVAL; + } + /* Use standard syndrome read/write page function? */ + if (!ecc->read_page) + ecc->read_page = nand_read_page_syndrome; + if (!ecc->write_page) + ecc->write_page = nand_write_page_syndrome; + if (!ecc->read_page_raw) + ecc->read_page_raw = nand_read_page_raw_syndrome; + if (!ecc->write_page_raw) + ecc->write_page_raw = nand_write_page_raw_syndrome; + if (!ecc->read_oob) + ecc->read_oob = nand_read_oob_syndrome; + if (!ecc->write_oob) + ecc->write_oob = nand_write_oob_syndrome; + break; + + default: + pr_warn("Invalid NAND_ECC_PLACEMENT %d\n", + ecc->placement); + return -EINVAL; + } + + return 0; +} + static int nand_set_ecc_soft_ops(struct nand_chip *chip) { struct mtd_info *mtd = nand_to_mtd(chip); @@ -5619,60 +5678,9 @@ static int nand_scan_tail(struct nand_chip *chip) switch (ecc->engine_type) { case NAND_ECC_ENGINE_TYPE_ON_HOST: - - switch (ecc->placement) { - case NAND_ECC_PLACEMENT_UNKNOWN: - case NAND_ECC_PLACEMENT_OOB: - /* Use standard hwecc read page function? */ - if (!ecc->read_page) - ecc->read_page = nand_read_page_hwecc; - if (!ecc->write_page) - ecc->write_page = nand_write_page_hwecc; - if (!ecc->read_page_raw) - ecc->read_page_raw = nand_read_page_raw; - if (!ecc->write_page_raw) - ecc->write_page_raw = nand_write_page_raw; - if (!ecc->read_oob) - ecc->read_oob = nand_read_oob_std; - if (!ecc->write_oob) - ecc->write_oob = nand_write_oob_std; - if (!ecc->read_subpage) - ecc->read_subpage = nand_read_subpage; - if (!ecc->write_subpage && ecc->hwctl && ecc->calculate) - ecc->write_subpage = nand_write_subpage_hwecc; - fallthrough; - - case NAND_ECC_PLACEMENT_INTERLEAVED: - if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) && - (!ecc->read_page || - ecc->read_page == nand_read_page_hwecc || - !ecc->write_page || - ecc->write_page == nand_write_page_hwecc)) { - WARN(1, "No ECC functions supplied; hardware ECC not possible\n"); - ret = -EINVAL; - goto err_nand_manuf_cleanup; - } - /* Use standard syndrome read/write page function? */ - if (!ecc->read_page) - ecc->read_page = nand_read_page_syndrome; - if (!ecc->write_page) - ecc->write_page = nand_write_page_syndrome; - if (!ecc->read_page_raw) - ecc->read_page_raw = nand_read_page_raw_syndrome; - if (!ecc->write_page_raw) - ecc->write_page_raw = nand_write_page_raw_syndrome; - if (!ecc->read_oob) - ecc->read_oob = nand_read_oob_syndrome; - if (!ecc->write_oob) - ecc->write_oob = nand_write_oob_syndrome; - break; - - default: - pr_warn("Invalid NAND_ECC_PLACEMENT %d\n", - ecc->placement); - ret = -EINVAL; + ret = nand_set_ecc_on_host_ops(chip); + if (ret) goto err_nand_manuf_cleanup; - } if (mtd->writesize >= ecc->size) { if (!ecc->strength) { From fb8c3810d7c8d2bca01292395e35b85419394f52 Mon Sep 17 00:00:00 2001 From: Tudor Ambarus Date: Thu, 17 Sep 2020 10:52:13 +0300 Subject: [PATCH 46/49] mtd: rawnand: Don't overwrite the error code from nand_set_ecc_soft_ops() The error code received from nand_set_ecc_soft_ops() was overwritten, drop this redundant assignment and use the error code received from the callee. Signed-off-by: Tudor Ambarus Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200917075213.532161-4-tudor.ambarus@microchip.com --- drivers/mtd/nand/raw/nand_base.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index c7f4ba975e2c..1f0d542d5923 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -5698,10 +5698,8 @@ static int nand_scan_tail(struct nand_chip *chip) case NAND_ECC_ENGINE_TYPE_SOFT: ret = nand_set_ecc_soft_ops(chip); - if (ret) { - ret = -EINVAL; + if (ret) goto err_nand_manuf_cleanup; - } break; case NAND_ECC_ENGINE_TYPE_ON_DIE: From 6d11178762f7c8338a028b428198383b8978b280 Mon Sep 17 00:00:00 2001 From: Janusz Krzysztofik Date: Sat, 19 Sep 2020 10:04:03 +0200 Subject: [PATCH 47/49] mtd: rawnand: ams-delta: Fix non-OF build warning Commit 7c2f66a960fc ("mtd: rawnand: ams-delta: Add module device tables") introduced an OF module device table but wrapped a reference to it with of_match_ptr() which resolves to NULL in non-OF configs. That resulted in a clang compiler warning on unused variable in non-OF builds. Fix it. drivers/mtd/nand/raw/ams-delta.c:373:34: warning: unused variable 'gpio_nand_of_id_table' [-Wunused-const-variable] static const struct of_device_id gpio_nand_of_id_table[] = { ^ 1 warning generated. Fixes: 7c2f66a960fc ("mtd: rawnand: ams-delta: Add module device tables") Reported-by: kernel test robot Signed-off-by: Janusz Krzysztofik Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200919080403.17520-1-jmkrzyszt@gmail.com --- drivers/mtd/nand/raw/ams-delta.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mtd/nand/raw/ams-delta.c b/drivers/mtd/nand/raw/ams-delta.c index 770d4f1001bb..d3c5cc513c8f 100644 --- a/drivers/mtd/nand/raw/ams-delta.c +++ b/drivers/mtd/nand/raw/ams-delta.c @@ -400,12 +400,14 @@ static int gpio_nand_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_OF static const struct of_device_id gpio_nand_of_id_table[] = { { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, gpio_nand_of_id_table); +#endif static const struct platform_device_id gpio_nand_plat_id_table[] = { { From fb1c7e829209e911ad479fb64ddbcc4f923caf50 Mon Sep 17 00:00:00 2001 From: Liu Shixin Date: Mon, 21 Sep 2020 09:38:05 +0800 Subject: [PATCH 48/49] mtd: rawnand: cadence: remove a redundant dev_err call There is an error message within devm_ioremap_resource already, so remove the dev_err call to avoid a redundant error message. Signed-off-by: Liu Shixin Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200921013805.1724606-1-liushixin2@huawei.com --- drivers/mtd/nand/raw/cadence-nand-controller.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/mtd/nand/raw/cadence-nand-controller.c b/drivers/mtd/nand/raw/cadence-nand-controller.c index db29e5e512df..b46786cd53e0 100644 --- a/drivers/mtd/nand/raw/cadence-nand-controller.c +++ b/drivers/mtd/nand/raw/cadence-nand-controller.c @@ -2980,18 +2980,14 @@ static int cadence_nand_dt_probe(struct platform_device *ofdev) dev_info(cdns_ctrl->dev, "IRQ: nr %d\n", cdns_ctrl->irq); cdns_ctrl->reg = devm_platform_ioremap_resource(ofdev, 0); - if (IS_ERR(cdns_ctrl->reg)) { - dev_err(&ofdev->dev, "devm_ioremap_resource res 0 failed\n"); + if (IS_ERR(cdns_ctrl->reg)) return PTR_ERR(cdns_ctrl->reg); - } res = platform_get_resource(ofdev, IORESOURCE_MEM, 1); cdns_ctrl->io.dma = res->start; cdns_ctrl->io.virt = devm_ioremap_resource(&ofdev->dev, res); - if (IS_ERR(cdns_ctrl->io.virt)) { - dev_err(cdns_ctrl->dev, "devm_ioremap_resource res 1 failed\n"); + if (IS_ERR(cdns_ctrl->io.virt)) return PTR_ERR(cdns_ctrl->io.virt); - } dt->clk = devm_clk_get(cdns_ctrl->dev, "nf_clk"); if (IS_ERR(dt->clk)) From 88e315d12fbb50c0bd12549bb04a051a4b4bc744 Mon Sep 17 00:00:00 2001 From: Liu Shixin Date: Mon, 21 Sep 2020 16:24:41 +0800 Subject: [PATCH 49/49] mtd: onenand: simplify the return expression of onenand_transfer_auto_oob Simplify the return expression. Signed-off-by: Liu Shixin Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20200921082441.2591669-1-liushixin2@huawei.com --- drivers/mtd/nand/onenand/onenand_base.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/mtd/nand/onenand/onenand_base.c b/drivers/mtd/nand/onenand/onenand_base.c index ec18ade33262..188b8061e1f7 100644 --- a/drivers/mtd/nand/onenand/onenand_base.c +++ b/drivers/mtd/nand/onenand/onenand_base.c @@ -1052,16 +1052,11 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col int thislen) { struct onenand_chip *this = mtd->priv; - int ret; this->read_bufferram(mtd, ONENAND_SPARERAM, this->oob_buf, 0, mtd->oobsize); - ret = mtd_ooblayout_get_databytes(mtd, buf, this->oob_buf, - column, thislen); - if (ret) - return ret; - - return 0; + return mtd_ooblayout_get_databytes(mtd, buf, this->oob_buf, + column, thislen); } /**