- reg : should specify the address and size used for NFC command registers,
NFC registers and NFC Sram. NFC Sram address and size can be absent
if don't want to use it.
+ - clocks: phandle to the peripheral clock
- Optional properties:
- atmel,write-by-sram: boolean to enable NFC write by sram.
compatible = "atmel,sama5d3-nfc";
#address-cells = <1>;
#size-cells = <1>;
+ clocks = <&hsmc_clk>
reg = <
0x70000000 0x10000000 /* NFC Command Registers */
0xffffc000 0x00000070 /* NFC HSMC regs */
file systems on embedded devices.
- compatible : should contain the specific model of mtd chip(s)
- used, if known, followed by either "cfi-flash", "jedec-flash"
- or "mtd-ram".
+ used, if known, followed by either "cfi-flash", "jedec-flash",
+ "mtd-ram" or "mtd-rom".
- reg : Address range(s) of the mtd chip(s)
It's possible to (optionally) define multiple "reg" tuples so that
non-identical chips can be described in one node.
W: http://www.linux-mtd.infradead.org/
Q: http://patchwork.ozlabs.org/project/linux-mtd/list/
T: git git://git.infradead.org/linux-mtd.git
+T: git git://git.infradead.org/l2-mtd.git
S: Maintained
F: drivers/mtd/
F: include/linux/mtd/
break;
}
+ gpmc_nand_data->flash_bbt = of_get_nand_on_flash_bbt(child);
+
val = of_get_nand_bus_width(child);
if (val == 16)
gpmc_nand_data->devsize = NAND_BUSWIDTH_16;
continue;
}
+ /*
+ * New (ARM?) devices may have NVRAM in some middle block. Last
+ * block will be checked later, so skip it.
+ */
+ if (offset != master->size - blocksize &&
+ buf[0x000 / 4] == NVRAM_HEADER) {
+ bcm47xxpart_add_part(&parts[curr_part++], "nvram",
+ offset, 0);
+ continue;
+ }
+
/* Read middle of the block */
if (mtd_read(master, offset + 0x8000, 0x4,
&bytes_read, (uint8_t *)buf) < 0) {
udelay(1);
}
+
+ retries--;
}
/* the chip never became ready */
obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o
obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o
obj-$(CONFIG_MTD_M25P80) += m25p80.o
-obj-$(CONFIG_MTD_NAND_OMAP_BCH) += elm.o
obj-$(CONFIG_MTD_SPEAR_SMI) += spear_smi.o
obj-$(CONFIG_MTD_SST25L) += sst25l.o
obj-$(CONFIG_MTD_BCM47XXSFLASH) += bcm47xxsflash.o
switch (mode) {
case DOC_ASICMODE_RESET:
- pos += seq_printf(s, "reset");
+ pos += seq_puts(s, "reset");
break;
case DOC_ASICMODE_NORMAL:
- pos += seq_printf(s, "normal");
+ pos += seq_puts(s, "normal");
break;
case DOC_ASICMODE_POWERDOWN:
- pos += seq_printf(s, "powerdown");
+ pos += seq_puts(s, "powerdown");
break;
}
- pos += seq_printf(s, ")\n");
+ pos += seq_puts(s, ")\n");
return pos;
}
DEBUGFS_RO_ATTR(asic_mode, dbg_asicmode_show);
pos += seq_printf(s, "Protection = 0x%02x (",
protect);
if (protect & DOC_PROTECT_FOUNDRY_OTP_LOCK)
- pos += seq_printf(s, "FOUNDRY_OTP_LOCK,");
+ pos += seq_puts(s, "FOUNDRY_OTP_LOCK,");
if (protect & DOC_PROTECT_CUSTOMER_OTP_LOCK)
- pos += seq_printf(s, "CUSTOMER_OTP_LOCK,");
+ pos += seq_puts(s, "CUSTOMER_OTP_LOCK,");
if (protect & DOC_PROTECT_LOCK_INPUT)
- pos += seq_printf(s, "LOCK_INPUT,");
+ pos += seq_puts(s, "LOCK_INPUT,");
if (protect & DOC_PROTECT_STICKY_LOCK)
- pos += seq_printf(s, "STICKY_LOCK,");
+ pos += seq_puts(s, "STICKY_LOCK,");
if (protect & DOC_PROTECT_PROTECTION_ENABLED)
- pos += seq_printf(s, "PROTECTION ON,");
+ pos += seq_puts(s, "PROTECTION ON,");
if (protect & DOC_PROTECT_IPL_DOWNLOAD_LOCK)
- pos += seq_printf(s, "IPL_DOWNLOAD_LOCK,");
+ pos += seq_puts(s, "IPL_DOWNLOAD_LOCK,");
if (protect & DOC_PROTECT_PROTECTION_ERROR)
- pos += seq_printf(s, "PROTECT_ERR,");
+ pos += seq_puts(s, "PROTECT_ERR,");
else
- pos += seq_printf(s, "NO_PROTECT_ERR");
- pos += seq_printf(s, ")\n");
+ pos += seq_puts(s, "NO_PROTECT_ERR");
+ pos += seq_puts(s, ")\n");
pos += seq_printf(s, "DPS0 = 0x%02x : "
"Protected area [0x%x - 0x%x] : OTP=%d, READ=%d, "
+++ /dev/null
-/*
- * Error Location Module
- *
- * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#define DRIVER_NAME "omap-elm"
-
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/sched.h>
-#include <linux/pm_runtime.h>
-#include <linux/platform_data/elm.h>
-
-#define ELM_SYSCONFIG 0x010
-#define ELM_IRQSTATUS 0x018
-#define ELM_IRQENABLE 0x01c
-#define ELM_LOCATION_CONFIG 0x020
-#define ELM_PAGE_CTRL 0x080
-#define ELM_SYNDROME_FRAGMENT_0 0x400
-#define ELM_SYNDROME_FRAGMENT_1 0x404
-#define ELM_SYNDROME_FRAGMENT_2 0x408
-#define ELM_SYNDROME_FRAGMENT_3 0x40c
-#define ELM_SYNDROME_FRAGMENT_4 0x410
-#define ELM_SYNDROME_FRAGMENT_5 0x414
-#define ELM_SYNDROME_FRAGMENT_6 0x418
-#define ELM_LOCATION_STATUS 0x800
-#define ELM_ERROR_LOCATION_0 0x880
-
-/* ELM Interrupt Status Register */
-#define INTR_STATUS_PAGE_VALID BIT(8)
-
-/* ELM Interrupt Enable Register */
-#define INTR_EN_PAGE_MASK BIT(8)
-
-/* ELM Location Configuration Register */
-#define ECC_BCH_LEVEL_MASK 0x3
-
-/* ELM syndrome */
-#define ELM_SYNDROME_VALID BIT(16)
-
-/* ELM_LOCATION_STATUS Register */
-#define ECC_CORRECTABLE_MASK BIT(8)
-#define ECC_NB_ERRORS_MASK 0x1f
-
-/* ELM_ERROR_LOCATION_0-15 Registers */
-#define ECC_ERROR_LOCATION_MASK 0x1fff
-
-#define ELM_ECC_SIZE 0x7ff
-
-#define SYNDROME_FRAGMENT_REG_SIZE 0x40
-#define ERROR_LOCATION_SIZE 0x100
-
-struct elm_registers {
- u32 elm_irqenable;
- u32 elm_sysconfig;
- u32 elm_location_config;
- u32 elm_page_ctrl;
- u32 elm_syndrome_fragment_6[ERROR_VECTOR_MAX];
- u32 elm_syndrome_fragment_5[ERROR_VECTOR_MAX];
- u32 elm_syndrome_fragment_4[ERROR_VECTOR_MAX];
- u32 elm_syndrome_fragment_3[ERROR_VECTOR_MAX];
- u32 elm_syndrome_fragment_2[ERROR_VECTOR_MAX];
- u32 elm_syndrome_fragment_1[ERROR_VECTOR_MAX];
- u32 elm_syndrome_fragment_0[ERROR_VECTOR_MAX];
-};
-
-struct elm_info {
- struct device *dev;
- void __iomem *elm_base;
- struct completion elm_completion;
- struct list_head list;
- enum bch_ecc bch_type;
- struct elm_registers elm_regs;
- int ecc_steps;
- int ecc_syndrome_size;
-};
-
-static LIST_HEAD(elm_devices);
-
-static void elm_write_reg(struct elm_info *info, int offset, u32 val)
-{
- writel(val, info->elm_base + offset);
-}
-
-static u32 elm_read_reg(struct elm_info *info, int offset)
-{
- return readl(info->elm_base + offset);
-}
-
-/**
- * elm_config - Configure ELM module
- * @dev: ELM device
- * @bch_type: Type of BCH ecc
- */
-int elm_config(struct device *dev, enum bch_ecc bch_type,
- int ecc_steps, int ecc_step_size, int ecc_syndrome_size)
-{
- u32 reg_val;
- struct elm_info *info = dev_get_drvdata(dev);
-
- if (!info) {
- dev_err(dev, "Unable to configure elm - device not probed?\n");
- return -ENODEV;
- }
- /* ELM cannot detect ECC errors for chunks > 1KB */
- if (ecc_step_size > ((ELM_ECC_SIZE + 1) / 2)) {
- dev_err(dev, "unsupported config ecc-size=%d\n", ecc_step_size);
- return -EINVAL;
- }
- /* ELM support 8 error syndrome process */
- if (ecc_steps > ERROR_VECTOR_MAX) {
- dev_err(dev, "unsupported config ecc-step=%d\n", ecc_steps);
- return -EINVAL;
- }
-
- reg_val = (bch_type & ECC_BCH_LEVEL_MASK) | (ELM_ECC_SIZE << 16);
- elm_write_reg(info, ELM_LOCATION_CONFIG, reg_val);
- info->bch_type = bch_type;
- info->ecc_steps = ecc_steps;
- info->ecc_syndrome_size = ecc_syndrome_size;
-
- return 0;
-}
-EXPORT_SYMBOL(elm_config);
-
-/**
- * elm_configure_page_mode - Enable/Disable page mode
- * @info: elm info
- * @index: index number of syndrome fragment vector
- * @enable: enable/disable flag for page mode
- *
- * Enable page mode for syndrome fragment index
- */
-static void elm_configure_page_mode(struct elm_info *info, int index,
- bool enable)
-{
- u32 reg_val;
-
- reg_val = elm_read_reg(info, ELM_PAGE_CTRL);
- if (enable)
- reg_val |= BIT(index); /* enable page mode */
- else
- reg_val &= ~BIT(index); /* disable page mode */
-
- elm_write_reg(info, ELM_PAGE_CTRL, reg_val);
-}
-
-/**
- * elm_load_syndrome - Load ELM syndrome reg
- * @info: elm info
- * @err_vec: elm error vectors
- * @ecc: buffer with calculated ecc
- *
- * Load syndrome fragment registers with calculated ecc in reverse order.
- */
-static void elm_load_syndrome(struct elm_info *info,
- struct elm_errorvec *err_vec, u8 *ecc)
-{
- int i, offset;
- u32 val;
-
- for (i = 0; i < info->ecc_steps; i++) {
-
- /* Check error reported */
- if (err_vec[i].error_reported) {
- elm_configure_page_mode(info, i, true);
- offset = ELM_SYNDROME_FRAGMENT_0 +
- SYNDROME_FRAGMENT_REG_SIZE * i;
- switch (info->bch_type) {
- case BCH8_ECC:
- /* syndrome fragment 0 = ecc[9-12B] */
- val = cpu_to_be32(*(u32 *) &ecc[9]);
- elm_write_reg(info, offset, val);
-
- /* syndrome fragment 1 = ecc[5-8B] */
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[5]);
- elm_write_reg(info, offset, val);
-
- /* syndrome fragment 2 = ecc[1-4B] */
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[1]);
- elm_write_reg(info, offset, val);
-
- /* syndrome fragment 3 = ecc[0B] */
- offset += 4;
- val = ecc[0];
- elm_write_reg(info, offset, val);
- break;
- case BCH4_ECC:
- /* syndrome fragment 0 = ecc[20-52b] bits */
- val = (cpu_to_be32(*(u32 *) &ecc[3]) >> 4) |
- ((ecc[2] & 0xf) << 28);
- elm_write_reg(info, offset, val);
-
- /* syndrome fragment 1 = ecc[0-20b] bits */
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[0]) >> 12;
- elm_write_reg(info, offset, val);
- break;
- case BCH16_ECC:
- val = cpu_to_be32(*(u32 *) &ecc[22]);
- elm_write_reg(info, offset, val);
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[18]);
- elm_write_reg(info, offset, val);
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[14]);
- elm_write_reg(info, offset, val);
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[10]);
- elm_write_reg(info, offset, val);
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[6]);
- elm_write_reg(info, offset, val);
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[2]);
- elm_write_reg(info, offset, val);
- offset += 4;
- val = cpu_to_be32(*(u32 *) &ecc[0]) >> 16;
- elm_write_reg(info, offset, val);
- break;
- default:
- pr_err("invalid config bch_type\n");
- }
- }
-
- /* Update ecc pointer with ecc byte size */
- ecc += info->ecc_syndrome_size;
- }
-}
-
-/**
- * elm_start_processing - start elm syndrome processing
- * @info: elm info
- * @err_vec: elm error vectors
- *
- * Set syndrome valid bit for syndrome fragment registers for which
- * elm syndrome fragment registers are loaded. This enables elm module
- * to start processing syndrome vectors.
- */
-static void elm_start_processing(struct elm_info *info,
- struct elm_errorvec *err_vec)
-{
- int i, offset;
- u32 reg_val;
-
- /*
- * Set syndrome vector valid, so that ELM module
- * will process it for vectors error is reported
- */
- for (i = 0; i < info->ecc_steps; i++) {
- if (err_vec[i].error_reported) {
- offset = ELM_SYNDROME_FRAGMENT_6 +
- SYNDROME_FRAGMENT_REG_SIZE * i;
- reg_val = elm_read_reg(info, offset);
- reg_val |= ELM_SYNDROME_VALID;
- elm_write_reg(info, offset, reg_val);
- }
- }
-}
-
-/**
- * elm_error_correction - locate correctable error position
- * @info: elm info
- * @err_vec: elm error vectors
- *
- * On completion of processing by elm module, error location status
- * register updated with correctable/uncorrectable error information.
- * In case of correctable errors, number of errors located from
- * elm location status register & read the positions from
- * elm error location register.
- */
-static void elm_error_correction(struct elm_info *info,
- struct elm_errorvec *err_vec)
-{
- int i, j, errors = 0;
- int offset;
- u32 reg_val;
-
- for (i = 0; i < info->ecc_steps; i++) {
-
- /* Check error reported */
- if (err_vec[i].error_reported) {
- offset = ELM_LOCATION_STATUS + ERROR_LOCATION_SIZE * i;
- reg_val = elm_read_reg(info, offset);
-
- /* Check correctable error or not */
- if (reg_val & ECC_CORRECTABLE_MASK) {
- offset = ELM_ERROR_LOCATION_0 +
- ERROR_LOCATION_SIZE * i;
-
- /* Read count of correctable errors */
- err_vec[i].error_count = reg_val &
- ECC_NB_ERRORS_MASK;
-
- /* Update the error locations in error vector */
- for (j = 0; j < err_vec[i].error_count; j++) {
-
- reg_val = elm_read_reg(info, offset);
- err_vec[i].error_loc[j] = reg_val &
- ECC_ERROR_LOCATION_MASK;
-
- /* Update error location register */
- offset += 4;
- }
-
- errors += err_vec[i].error_count;
- } else {
- err_vec[i].error_uncorrectable = true;
- }
-
- /* Clearing interrupts for processed error vectors */
- elm_write_reg(info, ELM_IRQSTATUS, BIT(i));
-
- /* Disable page mode */
- elm_configure_page_mode(info, i, false);
- }
- }
-}
-
-/**
- * elm_decode_bch_error_page - Locate error position
- * @dev: device pointer
- * @ecc_calc: calculated ECC bytes from GPMC
- * @err_vec: elm error vectors
- *
- * Called with one or more error reported vectors & vectors with
- * error reported is updated in err_vec[].error_reported
- */
-void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
- struct elm_errorvec *err_vec)
-{
- struct elm_info *info = dev_get_drvdata(dev);
- u32 reg_val;
-
- /* Enable page mode interrupt */
- reg_val = elm_read_reg(info, ELM_IRQSTATUS);
- elm_write_reg(info, ELM_IRQSTATUS, reg_val & INTR_STATUS_PAGE_VALID);
- elm_write_reg(info, ELM_IRQENABLE, INTR_EN_PAGE_MASK);
-
- /* Load valid ecc byte to syndrome fragment register */
- elm_load_syndrome(info, err_vec, ecc_calc);
-
- /* Enable syndrome processing for which syndrome fragment is updated */
- elm_start_processing(info, err_vec);
-
- /* Wait for ELM module to finish locating error correction */
- wait_for_completion(&info->elm_completion);
-
- /* Disable page mode interrupt */
- reg_val = elm_read_reg(info, ELM_IRQENABLE);
- elm_write_reg(info, ELM_IRQENABLE, reg_val & ~INTR_EN_PAGE_MASK);
- elm_error_correction(info, err_vec);
-}
-EXPORT_SYMBOL(elm_decode_bch_error_page);
-
-static irqreturn_t elm_isr(int this_irq, void *dev_id)
-{
- u32 reg_val;
- struct elm_info *info = dev_id;
-
- reg_val = elm_read_reg(info, ELM_IRQSTATUS);
-
- /* All error vectors processed */
- if (reg_val & INTR_STATUS_PAGE_VALID) {
- elm_write_reg(info, ELM_IRQSTATUS,
- reg_val & INTR_STATUS_PAGE_VALID);
- complete(&info->elm_completion);
- return IRQ_HANDLED;
- }
-
- return IRQ_NONE;
-}
-
-static int elm_probe(struct platform_device *pdev)
-{
- int ret = 0;
- struct resource *res, *irq;
- struct elm_info *info;
-
- info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
- if (!info)
- return -ENOMEM;
-
- info->dev = &pdev->dev;
-
- irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!irq) {
- dev_err(&pdev->dev, "no irq resource defined\n");
- return -ENODEV;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- info->elm_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(info->elm_base))
- return PTR_ERR(info->elm_base);
-
- ret = devm_request_irq(&pdev->dev, irq->start, elm_isr, 0,
- pdev->name, info);
- if (ret) {
- dev_err(&pdev->dev, "failure requesting irq %i\n", irq->start);
- return ret;
- }
-
- pm_runtime_enable(&pdev->dev);
- if (pm_runtime_get_sync(&pdev->dev) < 0) {
- ret = -EINVAL;
- pm_runtime_disable(&pdev->dev);
- dev_err(&pdev->dev, "can't enable clock\n");
- return ret;
- }
-
- init_completion(&info->elm_completion);
- INIT_LIST_HEAD(&info->list);
- list_add(&info->list, &elm_devices);
- platform_set_drvdata(pdev, info);
- return ret;
-}
-
-static int elm_remove(struct platform_device *pdev)
-{
- pm_runtime_put_sync(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
- return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-/**
- * elm_context_save
- * saves ELM configurations to preserve them across Hardware powered-down
- */
-static int elm_context_save(struct elm_info *info)
-{
- struct elm_registers *regs = &info->elm_regs;
- enum bch_ecc bch_type = info->bch_type;
- u32 offset = 0, i;
-
- regs->elm_irqenable = elm_read_reg(info, ELM_IRQENABLE);
- regs->elm_sysconfig = elm_read_reg(info, ELM_SYSCONFIG);
- regs->elm_location_config = elm_read_reg(info, ELM_LOCATION_CONFIG);
- regs->elm_page_ctrl = elm_read_reg(info, ELM_PAGE_CTRL);
- for (i = 0; i < ERROR_VECTOR_MAX; i++) {
- offset = i * SYNDROME_FRAGMENT_REG_SIZE;
- switch (bch_type) {
- case BCH16_ECC:
- regs->elm_syndrome_fragment_6[i] = elm_read_reg(info,
- ELM_SYNDROME_FRAGMENT_6 + offset);
- regs->elm_syndrome_fragment_5[i] = elm_read_reg(info,
- ELM_SYNDROME_FRAGMENT_5 + offset);
- regs->elm_syndrome_fragment_4[i] = elm_read_reg(info,
- ELM_SYNDROME_FRAGMENT_4 + offset);
- case BCH8_ECC:
- regs->elm_syndrome_fragment_3[i] = elm_read_reg(info,
- ELM_SYNDROME_FRAGMENT_3 + offset);
- regs->elm_syndrome_fragment_2[i] = elm_read_reg(info,
- ELM_SYNDROME_FRAGMENT_2 + offset);
- case BCH4_ECC:
- regs->elm_syndrome_fragment_1[i] = elm_read_reg(info,
- ELM_SYNDROME_FRAGMENT_1 + offset);
- regs->elm_syndrome_fragment_0[i] = elm_read_reg(info,
- ELM_SYNDROME_FRAGMENT_0 + offset);
- break;
- default:
- return -EINVAL;
- }
- /* ELM SYNDROME_VALID bit in SYNDROME_FRAGMENT_6[] needs
- * to be saved for all BCH schemes*/
- regs->elm_syndrome_fragment_6[i] = elm_read_reg(info,
- ELM_SYNDROME_FRAGMENT_6 + offset);
- }
- return 0;
-}
-
-/**
- * elm_context_restore
- * writes configurations saved duing power-down back into ELM registers
- */
-static int elm_context_restore(struct elm_info *info)
-{
- struct elm_registers *regs = &info->elm_regs;
- enum bch_ecc bch_type = info->bch_type;
- u32 offset = 0, i;
-
- elm_write_reg(info, ELM_IRQENABLE, regs->elm_irqenable);
- elm_write_reg(info, ELM_SYSCONFIG, regs->elm_sysconfig);
- elm_write_reg(info, ELM_LOCATION_CONFIG, regs->elm_location_config);
- elm_write_reg(info, ELM_PAGE_CTRL, regs->elm_page_ctrl);
- for (i = 0; i < ERROR_VECTOR_MAX; i++) {
- offset = i * SYNDROME_FRAGMENT_REG_SIZE;
- switch (bch_type) {
- case BCH16_ECC:
- elm_write_reg(info, ELM_SYNDROME_FRAGMENT_6 + offset,
- regs->elm_syndrome_fragment_6[i]);
- elm_write_reg(info, ELM_SYNDROME_FRAGMENT_5 + offset,
- regs->elm_syndrome_fragment_5[i]);
- elm_write_reg(info, ELM_SYNDROME_FRAGMENT_4 + offset,
- regs->elm_syndrome_fragment_4[i]);
- case BCH8_ECC:
- elm_write_reg(info, ELM_SYNDROME_FRAGMENT_3 + offset,
- regs->elm_syndrome_fragment_3[i]);
- elm_write_reg(info, ELM_SYNDROME_FRAGMENT_2 + offset,
- regs->elm_syndrome_fragment_2[i]);
- case BCH4_ECC:
- elm_write_reg(info, ELM_SYNDROME_FRAGMENT_1 + offset,
- regs->elm_syndrome_fragment_1[i]);
- elm_write_reg(info, ELM_SYNDROME_FRAGMENT_0 + offset,
- regs->elm_syndrome_fragment_0[i]);
- break;
- default:
- return -EINVAL;
- }
- /* ELM_SYNDROME_VALID bit to be set in last to trigger FSM */
- elm_write_reg(info, ELM_SYNDROME_FRAGMENT_6 + offset,
- regs->elm_syndrome_fragment_6[i] &
- ELM_SYNDROME_VALID);
- }
- return 0;
-}
-
-static int elm_suspend(struct device *dev)
-{
- struct elm_info *info = dev_get_drvdata(dev);
- elm_context_save(info);
- pm_runtime_put_sync(dev);
- return 0;
-}
-
-static int elm_resume(struct device *dev)
-{
- struct elm_info *info = dev_get_drvdata(dev);
- pm_runtime_get_sync(dev);
- elm_context_restore(info);
- return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(elm_pm_ops, elm_suspend, elm_resume);
-
-#ifdef CONFIG_OF
-static const struct of_device_id elm_of_match[] = {
- { .compatible = "ti,am3352-elm" },
- {},
-};
-MODULE_DEVICE_TABLE(of, elm_of_match);
-#endif
-
-static struct platform_driver elm_driver = {
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(elm_of_match),
- .pm = &elm_pm_ops,
- },
- .probe = elm_probe,
- .remove = elm_remove,
-};
-
-module_platform_driver(elm_driver);
-
-MODULE_DESCRIPTION("ELM driver for BCH error correction");
-MODULE_AUTHOR("Texas Instruments");
-MODULE_ALIAS("platform: elm");
-MODULE_LICENSE("GPL v2");
{
struct mtd_part_parser_data ppdata;
struct flash_platform_data *data;
+ const struct spi_device_id *id = NULL;
struct m25p *flash;
struct spi_nor *nor;
enum read_mode mode = SPI_NOR_NORMAL;
int ret;
+ data = dev_get_platdata(&spi->dev);
+
flash = devm_kzalloc(&spi->dev, sizeof(*flash), GFP_KERNEL);
if (!flash)
return -ENOMEM;
mode = SPI_NOR_QUAD;
else if (spi->mode & SPI_RX_DUAL)
mode = SPI_NOR_DUAL;
- ret = spi_nor_scan(nor, spi_get_device_id(spi), mode);
+
+ if (data && data->name)
+ flash->mtd.name = data->name;
+
+ /* For some (historical?) reason many platforms provide two different
+ * names in flash_platform_data: "name" and "type". Quite often name is
+ * set to "m25p80" and then "type" provides a real chip name.
+ * If that's the case, respect "type" and ignore a "name".
+ */
+ if (data && data->type)
+ id = spi_nor_match_id(data->type);
+
+ /* If we didn't get name from platform, simply use "modalias". */
+ if (!id)
+ id = spi_get_device_id(spi);
+
+ ret = spi_nor_scan(nor, id, mode);
if (ret)
return ret;
- data = dev_get_platdata(&spi->dev);
ppdata.of_node = spi->dev.of_node;
return mtd_device_parse_register(&flash->mtd, NULL, &ppdata,
config MTD_SOLUTIONENGINE
tristate "CFI Flash device mapped on Hitachi SolutionEngine"
- depends on SUPERH && SOLUTION_ENGINE && MTD_CFI && MTD_REDBOOT_PARTS
+ depends on SOLUTION_ENGINE && MTD_CFI && MTD_REDBOOT_PARTS
help
This enables access to the flash chips on the Hitachi SolutionEngine and
similar boards. Say 'Y' if you are building a kernel for such a board.
* @from: flash offset to copy from
* @len: how much to copy
*
- * We rely on the MTD layer to chunk up copies such that a single request here
- * will not cross a window size. This allows us to only wiggle the GPIOs once
- * before falling back to a normal memcpy. Reading the higher layer code shows
- * that this is indeed the case, but add a BUG_ON() to future proof.
+ * The "from" region may straddle more than one window, so toggle the GPIOs for
+ * each window region before reading its data.
*/
static void gf_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
struct async_state *state = gf_map_info_to_state(map);
- gf_set_gpios(state, from);
+ int this_len;
- /* BUG if operation crosses the win_size */
- BUG_ON(!((from + len) % state->win_size <= (from + len)));
+ while (len) {
+ if ((from % state->win_size) + len > state->win_size)
+ this_len = state->win_size - (from % state->win_size);
+ else
+ this_len = len;
- /* operation does not cross the win_size, so one shot it */
- memcpy_fromio(to, map->virt + (from % state->win_size), len);
+ gf_set_gpios(state, from);
+ memcpy_fromio(to, map->virt + (from % state->win_size),
+ this_len);
+ len -= this_len;
+ from += this_len;
+ to += this_len;
+ }
}
/**
{
struct async_state *state = gf_map_info_to_state(map);
- gf_set_gpios(state, to);
+ int this_len;
+
+ while (len) {
+ if ((to % state->win_size) + len > state->win_size)
+ this_len = state->win_size - (to % state->win_size);
+ else
+ this_len = len;
- /* BUG if operation crosses the win_size */
- BUG_ON(!((to + len) % state->win_size <= (to + len)));
+ gf_set_gpios(state, to);
+ memcpy_toio(map->virt + (to % state->win_size), from, len);
- /* operation does not cross the win_size, so one shot it */
- memcpy_toio(map->virt + (to % state->win_size), from, len);
+ len -= this_len;
+ to += this_len;
+ from += this_len;
+ }
}
static const char * const part_probe_types[] = {
if (!pcmcia_dev_present(dev->p_dev)) {
pr_debug("device removed\n");
- return 0;
+ return NULL;
}
offset = to & ~(dev->win_size-1);
if (strcmp(of_probe, "ROM") != 0)
dev_warn(&dev->dev, "obsolete_probe: don't know probe "
"type '%s', mapping as rom\n", of_probe);
- return do_map_probe("mtd_rom", map);
+ return do_map_probe("map_rom", map);
}
}
.compatible = "mtd-ram",
.data = (void *)"map_ram",
},
+ {
+ .compatible = "mtd-rom",
+ .data = (void *)"map_rom",
+ },
{
.type = "rom",
.compatible = "direct-mapped"
if (mtd_is_partition(mtd))
return -EINVAL;
+ /* Sanitize user input */
+ p.devname[BLKPG_DEVNAMELTH - 1] = '\0';
+
return mtd_add_partition(mtd, p.devname, p.start, p.length);
case BLKPG_DEL_PARTITION:
*/
static void mtd_release(struct device *dev)
{
- struct mtd_info __maybe_unused *mtd = dev_get_drvdata(dev);
+ struct mtd_info *mtd = dev_get_drvdata(dev);
dev_t index = MTD_DEVT(mtd->index);
- /* remove /dev/mtdXro node if needed */
- if (index)
- device_destroy(&mtd_class, index + 1);
+ /* remove /dev/mtdXro node */
+ device_destroy(&mtd_class, index + 1);
}
static int mtd_cls_suspend(struct device *dev, pm_message_t state)
if (device_register(&mtd->dev) != 0)
goto fail_added;
- if (MTD_DEVT(i))
- device_create(&mtd_class, mtd->dev.parent,
- MTD_DEVT(i) + 1,
- NULL, "mtd%dro", i);
+ device_create(&mtd_class, mtd->dev.parent, MTD_DEVT(i) + 1, NULL,
+ "mtd%dro", i);
pr_debug("mtd: Giving out device %d to %s\n", i, mtd->name);
/* No need to get a refcount on the module containing
*/
int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
{
- if (instr->addr > mtd->size || instr->len > mtd->size - instr->addr)
+ if (instr->addr >= mtd->size || instr->len > mtd->size - instr->addr)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
*phys = 0;
if (!mtd->_point)
return -EOPNOTSUPP;
- if (from < 0 || from > mtd->size || len > mtd->size - from)
+ if (from < 0 || from >= mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
{
if (!mtd->_point)
return -EOPNOTSUPP;
- if (from < 0 || from > mtd->size || len > mtd->size - from)
+ if (from < 0 || from >= mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
{
if (!mtd->_get_unmapped_area)
return -EOPNOTSUPP;
- if (offset > mtd->size || len > mtd->size - offset)
+ if (offset >= mtd->size || len > mtd->size - offset)
return -EINVAL;
return mtd->_get_unmapped_area(mtd, len, offset, flags);
}
{
int ret_code;
*retlen = 0;
- if (from < 0 || from > mtd->size || len > mtd->size - from)
+ if (from < 0 || from >= mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
const u_char *buf)
{
*retlen = 0;
- if (to < 0 || to > mtd->size || len > mtd->size - to)
+ if (to < 0 || to >= mtd->size || len > mtd->size - to)
return -EINVAL;
if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE))
return -EROFS;
*retlen = 0;
if (!mtd->_panic_write)
return -EOPNOTSUPP;
- if (to < 0 || to > mtd->size || len > mtd->size - to)
+ if (to < 0 || to >= mtd->size || len > mtd->size - to)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
{
if (!mtd->_lock)
return -EOPNOTSUPP;
- if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+ if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
{
if (!mtd->_unlock)
return -EOPNOTSUPP;
- if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+ if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
{
if (!mtd->_is_locked)
return -EOPNOTSUPP;
- if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
+ if (ofs < 0 || ofs >= mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
int mtd_block_isreserved(struct mtd_info *mtd, loff_t ofs)
{
- if (ofs < 0 || ofs > mtd->size)
+ if (ofs < 0 || ofs >= mtd->size)
return -EINVAL;
if (!mtd->_block_isreserved)
return 0;
int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
{
- if (ofs < 0 || ofs > mtd->size)
+ if (ofs < 0 || ofs >= mtd->size)
return -EINVAL;
if (!mtd->_block_isbad)
return 0;
{
if (!mtd->_block_markbad)
return -EOPNOTSUPP;
- if (ofs < 0 || ofs > mtd->size)
+ if (ofs < 0 || ofs >= mtd->size)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
struct mtdswap_oobdata {
__le16 magic;
__le32 count;
-} __attribute__((packed));
+} __packed;
#define MTDSWAP_MAGIC_CLEAN 0x2095
#define MTDSWAP_MAGIC_DIRTY (MTDSWAP_MAGIC_CLEAN + 1)
seq_printf(s, "total erasures: %lu\n", sum);
- seq_printf(s, "\n");
+ seq_puts(s, "\n");
seq_printf(s, "mtdswap_readsect count: %llu\n", d->sect_read_count);
seq_printf(s, "mtdswap_writesect count: %llu\n", d->sect_write_count);
seq_printf(s, "mtd write count: %llu\n", d->mtd_write_count);
seq_printf(s, "discarded pages count: %llu\n", d->discard_page_count);
- seq_printf(s, "\n");
+ seq_puts(s, "\n");
seq_printf(s, "total pages: %u\n", pages);
seq_printf(s, "pages mapped: %u\n", mapped);
}
eblocks = mtd_div_by_eb(use_size, mtd);
- use_size = eblocks * mtd->erasesize;
+ use_size = (uint64_t)eblocks * mtd->erasesize;
bad_blocks = mtdswap_badblocks(mtd, use_size);
eavailable = eblocks - bad_blocks;
config MTD_NAND_OMAP_BCH
depends on MTD_NAND_OMAP2
- tristate "Support hardware based BCH error correction"
+ bool "Support hardware based BCH error correction"
default n
select BCH
help
locate and correct errors when using BCH ECC scheme. This offloads
the cpu from doing ECC error searching and correction. However some
legacy OMAP families like OMAP2xxx, OMAP3xxx do not have ELM engine
- so they should not enable this config symbol.
+ so this is optional for them.
+
+config MTD_NAND_OMAP_BCH_BUILD
+ def_tristate MTD_NAND_OMAP2 && MTD_NAND_OMAP_BCH
config MTD_NAND_IDS
tristate
obj-$(CONFIG_MTD_NAND_ATMEL) += atmel_nand.o
obj-$(CONFIG_MTD_NAND_GPIO) += gpio.o
obj-$(CONFIG_MTD_NAND_OMAP2) += omap2.o
+obj-$(CONFIG_MTD_NAND_OMAP_BCH_BUILD) += omap_elm.o
obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o
obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o
*
*/
+#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/module.h>
bool use_nfc_sram;
bool write_by_sram;
+ struct clk *clk;
+
bool is_initialized;
struct completion comp_ready;
struct completion comp_cmd_done;
u32 pmecc_lookup_table_offset_512;
u32 pmecc_lookup_table_offset_1024;
- int pmecc_bytes_per_sector;
- int pmecc_sector_number;
int pmecc_degree; /* Degree of remainders */
int pmecc_cw_len; /* Length of codeword */
pos, bit_pos, err_byte, *(buf + byte_pos));
} else {
/* Bit flip in OOB area */
- tmp = sector_num * host->pmecc_bytes_per_sector
+ tmp = sector_num * nand_chip->ecc.bytes
+ (byte_pos - sector_size);
err_byte = ecc[tmp];
ecc[tmp] ^= (1 << bit_pos);
return 0;
normal_check:
- for (i = 0; i < host->pmecc_sector_number; i++) {
+ for (i = 0; i < nand_chip->ecc.steps; i++) {
err_nbr = 0;
if (pmecc_stat & 0x1) {
buf_pos = buf + i * host->pmecc_sector_size;
return -EIO;
} else {
pmecc_correct_data(mtd, buf_pos, ecc, i,
- host->pmecc_bytes_per_sector, err_nbr);
+ nand_chip->ecc.bytes, err_nbr);
mtd->ecc_stats.corrected += err_nbr;
total_err += err_nbr;
}
cpu_relax();
}
- for (i = 0; i < host->pmecc_sector_number; i++) {
- for (j = 0; j < host->pmecc_bytes_per_sector; j++) {
+ for (i = 0; i < chip->ecc.steps; i++) {
+ for (j = 0; j < chip->ecc.bytes; j++) {
int pos;
- pos = i * host->pmecc_bytes_per_sector + j;
+ pos = i * chip->ecc.bytes + j;
chip->oob_poi[eccpos[pos]] =
pmecc_readb_ecc_relaxed(host->ecc, i, j);
}
else if (host->pmecc_sector_size == 1024)
val |= PMECC_CFG_SECTOR1024;
- switch (host->pmecc_sector_number) {
+ switch (nand_chip->ecc.steps) {
case 1:
val |= PMECC_CFG_PAGE_1SECTOR;
break;
host->ecc = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(host->ecc)) {
- dev_err(host->dev, "ioremap failed\n");
err_no = PTR_ERR(host->ecc);
goto err;
}
regs_pmerr = platform_get_resource(pdev, IORESOURCE_MEM, 2);
host->pmerrloc_base = devm_ioremap_resource(&pdev->dev, regs_pmerr);
if (IS_ERR(host->pmerrloc_base)) {
- dev_err(host->dev,
- "Can not get I/O resource for PMECC ERRLOC controller!\n");
err_no = PTR_ERR(host->pmerrloc_base);
goto err;
}
regs_rom = platform_get_resource(pdev, IORESOURCE_MEM, 3);
host->pmecc_rom_base = devm_ioremap_resource(&pdev->dev, regs_rom);
if (IS_ERR(host->pmecc_rom_base)) {
- dev_err(host->dev, "Can not get I/O resource for ROM!\n");
err_no = PTR_ERR(host->pmecc_rom_base);
goto err;
}
/* set ECC page size and oob layout */
switch (mtd->writesize) {
+ case 512:
+ case 1024:
case 2048:
+ case 4096:
+ case 8192:
+ if (sector_size > mtd->writesize) {
+ dev_err(host->dev, "pmecc sector size is bigger than the page size!\n");
+ err_no = -EINVAL;
+ goto err;
+ }
+
host->pmecc_degree = (sector_size == 512) ?
PMECC_GF_DIMENSION_13 : PMECC_GF_DIMENSION_14;
host->pmecc_cw_len = (1 << host->pmecc_degree) - 1;
- host->pmecc_sector_number = mtd->writesize / sector_size;
- host->pmecc_bytes_per_sector = pmecc_get_ecc_bytes(
- cap, sector_size);
host->pmecc_alpha_to = pmecc_get_alpha_to(host);
host->pmecc_index_of = host->pmecc_rom_base +
host->pmecc_lookup_table_offset;
- nand_chip->ecc.steps = host->pmecc_sector_number;
nand_chip->ecc.strength = cap;
- nand_chip->ecc.bytes = host->pmecc_bytes_per_sector;
- nand_chip->ecc.total = host->pmecc_bytes_per_sector *
- host->pmecc_sector_number;
+ nand_chip->ecc.bytes = pmecc_get_ecc_bytes(cap, sector_size);
+ nand_chip->ecc.steps = mtd->writesize / sector_size;
+ nand_chip->ecc.total = nand_chip->ecc.bytes *
+ nand_chip->ecc.steps;
if (nand_chip->ecc.total > mtd->oobsize - 2) {
dev_err(host->dev, "No room for ECC bytes\n");
err_no = -EINVAL;
nand_chip->ecc.layout = &atmel_pmecc_oobinfo;
break;
- case 512:
- case 1024:
- case 4096:
- /* TODO */
+ default:
dev_warn(host->dev,
"Unsupported page size for PMECC, use Software ECC\n");
- default:
/* page size not handled by HW ECC */
/* switching back to soft ECC */
nand_chip->ecc.mode = NAND_ECC_SOFT;
}
host->ecc = devm_ioremap_resource(&pdev->dev, regs);
- if (IS_ERR(host->ecc)) {
- dev_err(host->dev, "ioremap failed\n");
+ if (IS_ERR(host->ecc))
return PTR_ERR(host->ecc);
- }
/* ECC is calculated for the whole page (1 step) */
nand_chip->ecc.size = mtd->writesize;
if (offset || (data_len < mtd->writesize))
return -EINVAL;
- cfg = nfc_readl(host->nfc->hsmc_regs, CFG);
len = mtd->writesize;
-
- if (unlikely(raw)) {
- len += mtd->oobsize;
- nfc_writel(host->nfc->hsmc_regs, CFG, cfg | NFC_CFG_WSPARE);
- } else
- nfc_writel(host->nfc->hsmc_regs, CFG, cfg & ~NFC_CFG_WSPARE);
-
/* Copy page data to sram that will write to nand via NFC */
if (use_dma) {
if (atmel_nand_dma_op(mtd, (void *)buf, len, 0) != 0)
memcpy32_toio(sram, buf, len);
}
+ cfg = nfc_readl(host->nfc->hsmc_regs, CFG);
+ if (unlikely(raw) && oob_required) {
+ memcpy32_toio(sram + len, chip->oob_poi, mtd->oobsize);
+ len += mtd->oobsize;
+ nfc_writel(host->nfc->hsmc_regs, CFG, cfg | NFC_CFG_WSPARE);
+ } else {
+ nfc_writel(host->nfc->hsmc_regs, CFG, cfg & ~NFC_CFG_WSPARE);
+ }
+
if (chip->ecc.mode == NAND_ECC_HW && host->has_pmecc)
/*
* When use NFC sram, need set up PMECC before send
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->io_base = devm_ioremap_resource(&pdev->dev, mem);
if (IS_ERR(host->io_base)) {
- dev_err(&pdev->dev, "atmel_nand: ioremap resource failed\n");
res = PTR_ERR(host->io_base);
goto err_nand_ioremap;
}
}
nand_chip->ecc.mode = host->board.ecc_mode;
- nand_chip->chip_delay = 20; /* 20us command delay time */
+ nand_chip->chip_delay = 40; /* 40us command delay time */
if (host->board.bus_width_16) /* 16-bit bus width */
nand_chip->options |= NAND_BUSWIDTH_16;
{
struct atmel_nfc *nfc = &nand_nfc;
struct resource *nfc_cmd_regs, *nfc_hsmc_regs, *nfc_sram;
+ int ret;
nfc_cmd_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
nfc->base_cmd_regs = devm_ioremap_resource(&pdev->dev, nfc_cmd_regs);
nfc_writel(nfc->hsmc_regs, IDR, 0xffffffff);
nfc_readl(nfc->hsmc_regs, SR); /* clear the NFC_SR */
+ nfc->clk = devm_clk_get(&pdev->dev, NULL);
+ if (!IS_ERR(nfc->clk)) {
+ ret = clk_prepare_enable(nfc->clk);
+ if (ret)
+ return ret;
+ } else {
+ dev_warn(&pdev->dev, "NFC clock missing, update your Device Tree");
+ }
+
nfc->is_initialized = true;
dev_info(&pdev->dev, "NFC is probed.\n");
+
+ return 0;
+}
+
+static int atmel_nand_nfc_remove(struct platform_device *pdev)
+{
+ struct atmel_nfc *nfc = &nand_nfc;
+
+ if (!IS_ERR(nfc->clk))
+ clk_disable_unprepare(nfc->clk);
+
return 0;
}
.of_match_table = of_match_ptr(atmel_nand_nfc_match),
},
.probe = atmel_nand_nfc_probe,
+ .remove = atmel_nand_nfc_remove,
};
static struct platform_driver atmel_nand_driver = {
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
+#include <linux/delay.h>
#include <linux/bcma/bcma.h>
/* Broadcom uses 1'000'000 but it seems to be too many. Tests on WNDR4500 has
#define NFLASH_SECTOR_SIZE 512
#define NCTL_CMD0 0x00010000
+#define NCTL_COL 0x00020000 /* Update column with value from BCMA_CC_NFLASH_COL_ADDR */
+#define NCTL_ROW 0x00040000 /* Update row (page) with value from BCMA_CC_NFLASH_ROW_ADDR */
#define NCTL_CMD1W 0x00080000
#define NCTL_READ 0x00100000
#define NCTL_WRITE 0x00200000
b47n->curr_page_addr);
/* Prepare to read */
- ctlcode = NCTL_CSA | NCTL_CMD1W | 0x00040000 | 0x00020000 |
+ ctlcode = NCTL_CSA | NCTL_CMD1W | NCTL_ROW | NCTL_COL |
NCTL_CMD0;
ctlcode |= NAND_CMD_READSTART << 8;
if (bcm47xxnflash_ops_bcm4706_ctl_cmd(b47n->cc, ctlcode))
* NAND chip ops
**************************************************/
+static void bcm47xxnflash_ops_bcm4706_cmd_ctrl(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl)
+{
+ struct nand_chip *nand_chip = (struct nand_chip *)mtd->priv;
+ struct bcm47xxnflash *b47n = (struct bcm47xxnflash *)nand_chip->priv;
+ u32 code = 0;
+
+ if (cmd == NAND_CMD_NONE)
+ return;
+
+ if (cmd & NAND_CTRL_CLE)
+ code = cmd | NCTL_CMD0;
+
+ /* nCS is not needed for reset command */
+ if (cmd != NAND_CMD_RESET)
+ code |= NCTL_CSA;
+
+ bcm47xxnflash_ops_bcm4706_ctl_cmd(b47n->cc, code);
+}
+
/* Default nand_select_chip calls cmd_ctrl, which is not used in BCM4706 */
static void bcm47xxnflash_ops_bcm4706_select_chip(struct mtd_info *mtd,
int chip)
return;
}
+static int bcm47xxnflash_ops_bcm4706_dev_ready(struct mtd_info *mtd)
+{
+ struct nand_chip *nand_chip = (struct nand_chip *)mtd->priv;
+ struct bcm47xxnflash *b47n = (struct bcm47xxnflash *)nand_chip->priv;
+
+ return !!(bcma_cc_read32(b47n->cc, BCMA_CC_NFLASH_CTL) & NCTL_READY);
+}
+
/*
* Default nand_command and nand_command_lp don't match BCM4706 hardware layout.
* For example, reading chip id is performed in a non-standard way.
switch (command) {
case NAND_CMD_RESET:
- pr_warn("Chip reset not implemented yet\n");
+ nand_chip->cmd_ctrl(mtd, command, NAND_CTRL_CLE);
+
+ ndelay(100);
+ nand_wait_ready(mtd);
break;
case NAND_CMD_READID:
ctlcode = NCTL_CSA | 0x01000000 | NCTL_CMD1W | NCTL_CMD0;
case NAND_CMD_ERASE1:
bcma_cc_write32(cc, BCMA_CC_NFLASH_ROW_ADDR,
b47n->curr_page_addr);
- ctlcode = 0x00040000 | NCTL_CMD1W | NCTL_CMD0 |
+ ctlcode = NCTL_ROW | NCTL_CMD1W | NCTL_CMD0 |
NAND_CMD_ERASE1 | (NAND_CMD_ERASE2 << 8);
if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, ctlcode))
pr_err("ERASE1 failed\n");
b47n->curr_page_addr);
/* Prepare to write */
- ctlcode = 0x40000000 | 0x00040000 | 0x00020000 | 0x00010000;
+ ctlcode = 0x40000000 | NCTL_ROW | NCTL_COL | NCTL_CMD0;
ctlcode |= NAND_CMD_SEQIN;
if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, ctlcode))
pr_err("SEQIN failed\n");
break;
case NAND_CMD_PAGEPROG:
- if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, 0x00010000 |
+ if (bcm47xxnflash_ops_bcm4706_ctl_cmd(cc, NCTL_CMD0 |
NAND_CMD_PAGEPROG))
pr_err("PAGEPROG failed\n");
if (bcm47xxnflash_ops_bcm4706_poll(cc))
int bcm47xxnflash_ops_bcm4706_init(struct bcm47xxnflash *b47n)
{
+ struct nand_chip *nand_chip = (struct nand_chip *)&b47n->nand_chip;
int err;
u32 freq;
u16 clock;
u32 val;
b47n->nand_chip.select_chip = bcm47xxnflash_ops_bcm4706_select_chip;
+ nand_chip->cmd_ctrl = bcm47xxnflash_ops_bcm4706_cmd_ctrl;
+ nand_chip->dev_ready = bcm47xxnflash_ops_bcm4706_dev_ready;
b47n->nand_chip.cmdfunc = bcm47xxnflash_ops_bcm4706_cmdfunc;
b47n->nand_chip.read_byte = bcm47xxnflash_ops_bcm4706_read_byte;
b47n->nand_chip.read_buf = bcm47xxnflash_ops_bcm4706_read_buf;
b47n->nand_chip.write_buf = bcm47xxnflash_ops_bcm4706_write_buf;
+
+ nand_chip->chip_delay = 50;
b47n->nand_chip.bbt_options = NAND_BBT_USE_FLASH;
b47n->nand_chip.ecc.mode = NAND_ECC_NONE; /* TODO: implement ECC */
/* Configure wait counters */
if (b47n->cc->status & BCMA_CC_CHIPST_4706_PKG_OPTION) {
- freq = 100000000;
+ /* 400 MHz */
+ freq = 400000000 / 4;
} else {
freq = bcma_chipco_pll_read(b47n->cc, 4);
- freq = (freq * 0xFFF) >> 3;
- freq = (freq * 25000000) >> 3;
+ freq = (freq & 0xFFF) >> 3;
+ /* Fixed reference clock 25 MHz and m = 2 */
+ freq = (freq * 25000000 / 2) / 4;
}
clock = freq / 1000000;
w0 = bcm47xxnflash_ops_bcm4706_ns_to_cycle(15, clock);
MODULE_LICENSE("GPL");
-/* We define a module parameter that allows the user to override
+/*
+ * We define a module parameter that allows the user to override
* the hardware and decide what timing mode should be used.
*/
#define NAND_DEFAULT_TIMINGS -1
static int onfi_timing_mode = NAND_DEFAULT_TIMINGS;
module_param(onfi_timing_mode, int, S_IRUGO);
-MODULE_PARM_DESC(onfi_timing_mode, "Overrides default ONFI setting."
- " -1 indicates use default timings");
+MODULE_PARM_DESC(onfi_timing_mode,
+ "Overrides default ONFI setting. -1 indicates use default timings");
#define DENALI_NAND_NAME "denali-nand"
-/* We define a macro here that combines all interrupts this driver uses into
- * a single constant value, for convenience. */
+/*
+ * We define a macro here that combines all interrupts this driver uses into
+ * a single constant value, for convenience.
+ */
#define DENALI_IRQ_ALL (INTR_STATUS__DMA_CMD_COMP | \
INTR_STATUS__ECC_TRANSACTION_DONE | \
INTR_STATUS__ECC_ERR | \
INTR_STATUS__RST_COMP | \
INTR_STATUS__ERASE_COMP)
-/* indicates whether or not the internal value for the flash bank is
- * valid or not */
+/*
+ * indicates whether or not the internal value for the flash bank is
+ * valid or not
+ */
#define CHIP_SELECT_INVALID -1
#define SUPPORT_8BITECC 1
-/* This macro divides two integers and rounds fractional values up
- * to the nearest integer value. */
+/*
+ * This macro divides two integers and rounds fractional values up
+ * to the nearest integer value.
+ */
#define CEIL_DIV(X, Y) (((X)%(Y)) ? ((X)/(Y)+1) : ((X)/(Y)))
-/* this macro allows us to convert from an MTD structure to our own
+/*
+ * this macro allows us to convert from an MTD structure to our own
* device context (denali) structure.
*/
#define mtd_to_denali(m) container_of(m, struct denali_nand_info, mtd)
-/* These constants are defined by the driver to enable common driver
- * configuration options. */
+/*
+ * These constants are defined by the driver to enable common driver
+ * configuration options.
+ */
#define SPARE_ACCESS 0x41
#define MAIN_ACCESS 0x42
#define MAIN_SPARE_ACCESS 0x43
+#define PIPELINE_ACCESS 0x2000
#define DENALI_READ 0
#define DENALI_WRITE 0x100
#define ADDR_CYCLE 1
#define STATUS_CYCLE 2
-/* this is a helper macro that allows us to
- * format the bank into the proper bits for the controller */
+/*
+ * this is a helper macro that allows us to
+ * format the bank into the proper bits for the controller
+ */
#define BANK(x) ((x) << 24)
/* forward declarations */
uint32_t int_mask);
static uint32_t read_interrupt_status(struct denali_nand_info *denali);
-/* Certain operations for the denali NAND controller use
- * an indexed mode to read/write data. The operation is
- * performed by writing the address value of the command
- * to the device memory followed by the data. This function
+/*
+ * Certain operations for the denali NAND controller use an indexed mode to
+ * read/write data. The operation is performed by writing the address value
+ * of the command to the device memory followed by the data. This function
* abstracts this common operation.
-*/
+ */
static void index_addr(struct denali_nand_info *denali,
uint32_t address, uint32_t data)
{
*pdata = ioread32(denali->flash_mem + 0x10);
}
-/* We need to buffer some data for some of the NAND core routines.
- * The operations manage buffering that data. */
+/*
+ * We need to buffer some data for some of the NAND core routines.
+ * The operations manage buffering that data.
+ */
static void reset_buf(struct denali_nand_info *denali)
{
denali->buf.head = denali->buf.tail = 0;
/* reads the status of the device */
static void read_status(struct denali_nand_info *denali)
{
- uint32_t cmd = 0x0;
+ uint32_t cmd;
/* initialize the data buffer to store status */
reset_buf(denali);
/* resets a specific device connected to the core */
static void reset_bank(struct denali_nand_info *denali)
{
- uint32_t irq_status = 0;
- uint32_t irq_mask = INTR_STATUS__RST_COMP |
- INTR_STATUS__TIME_OUT;
+ uint32_t irq_status;
+ uint32_t irq_mask = INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT;
clear_interrupts(denali);
/* Reset the flash controller */
static uint16_t denali_nand_reset(struct denali_nand_info *denali)
{
- uint32_t i;
+ int i;
dev_dbg(denali->dev, "%s, Line %d, Function: %s\n",
- __FILE__, __LINE__, __func__);
+ __FILE__, __LINE__, __func__);
- for (i = 0 ; i < denali->max_banks; i++)
+ for (i = 0; i < denali->max_banks; i++)
iowrite32(INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT,
denali->flash_reg + INTR_STATUS(i));
- for (i = 0 ; i < denali->max_banks; i++) {
+ for (i = 0; i < denali->max_banks; i++) {
iowrite32(1 << i, denali->flash_reg + DEVICE_RESET);
- while (!(ioread32(denali->flash_reg +
- INTR_STATUS(i)) &
+ while (!(ioread32(denali->flash_reg + INTR_STATUS(i)) &
(INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT)))
cpu_relax();
if (ioread32(denali->flash_reg + INTR_STATUS(i)) &
for (i = 0; i < denali->max_banks; i++)
iowrite32(INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT,
- denali->flash_reg + INTR_STATUS(i));
+ denali->flash_reg + INTR_STATUS(i));
return PASS;
}
-/* this routine calculates the ONFI timing values for a given mode and
+/*
+ * this routine calculates the ONFI timing values for a given mode and
* programs the clocking register accordingly. The mode is determined by
* the get_onfi_nand_para routine.
*/
uint16_t addr_2_data, re_2_we, re_2_re, we_2_re, cs_cnt;
dev_dbg(denali->dev, "%s, Line %d, Function: %s\n",
- __FILE__, __LINE__, __func__);
+ __FILE__, __LINE__, __func__);
en_lo = CEIL_DIV(Trp[mode], CLK_X);
en_hi = CEIL_DIV(Treh[mode], CLK_X);
data_invalid_rloh = (en_lo + en_hi) * CLK_X + Trloh[mode];
- data_invalid =
- data_invalid_rhoh <
- data_invalid_rloh ? data_invalid_rhoh : data_invalid_rloh;
+ data_invalid = data_invalid_rhoh < data_invalid_rloh ?
+ data_invalid_rhoh : data_invalid_rloh;
dv_window = data_invalid - Trea[mode];
acc_clks = CEIL_DIV(Trea[mode], CLK_X);
- while (((acc_clks * CLK_X) - Trea[mode]) < 3)
+ while (acc_clks * CLK_X - Trea[mode] < 3)
acc_clks++;
- if ((data_invalid - acc_clks * CLK_X) < 2)
+ if (data_invalid - acc_clks * CLK_X < 2)
dev_warn(denali->dev, "%s, Line %d: Warning!\n",
- __FILE__, __LINE__);
+ __FILE__, __LINE__);
addr_2_data = CEIL_DIV(Tadl[mode], CLK_X);
re_2_we = CEIL_DIV(Trhw[mode], CLK_X);
cs_cnt = 1;
if (Tcea[mode]) {
- while (((cs_cnt * CLK_X) + Trea[mode]) < Tcea[mode])
+ while (cs_cnt * CLK_X + Trea[mode] < Tcea[mode])
cs_cnt++;
}
#endif
/* Sighting 3462430: Temporary hack for MT29F128G08CJABAWP:B */
- if ((ioread32(denali->flash_reg + MANUFACTURER_ID) == 0) &&
- (ioread32(denali->flash_reg + DEVICE_ID) == 0x88))
+ if (ioread32(denali->flash_reg + MANUFACTURER_ID) == 0 &&
+ ioread32(denali->flash_reg + DEVICE_ID) == 0x88)
acc_clks = 6;
iowrite32(acc_clks, denali->flash_reg + ACC_CLKS);
static uint16_t get_onfi_nand_para(struct denali_nand_info *denali)
{
int i;
- /* we needn't to do a reset here because driver has already
+
+ /*
+ * we needn't to do a reset here because driver has already
* reset all the banks before
- * */
+ */
if (!(ioread32(denali->flash_reg + ONFI_TIMING_MODE) &
ONFI_TIMING_MODE__VALUE))
return FAIL;
nand_onfi_timing_set(denali, i);
- /* By now, all the ONFI devices we know support the page cache */
- /* rw feature. So here we enable the pipeline_rw_ahead feature */
+ /*
+ * By now, all the ONFI devices we know support the page cache
+ * rw feature. So here we enable the pipeline_rw_ahead feature
+ */
/* iowrite32(1, denali->flash_reg + CACHE_WRITE_ENABLE); */
/* iowrite32(1, denali->flash_reg + CACHE_READ_ENABLE); */
{
uint32_t tmp;
- /* Workaround to fix a controller bug which reports a wrong */
- /* spare area size for some kind of Toshiba NAND device */
+ /*
+ * Workaround to fix a controller bug which reports a wrong
+ * spare area size for some kind of Toshiba NAND device
+ */
if ((ioread32(denali->flash_reg + DEVICE_MAIN_AREA_SIZE) == 4096) &&
(ioread32(denali->flash_reg + DEVICE_SPARE_AREA_SIZE) == 64)) {
iowrite32(216, denali->flash_reg + DEVICE_SPARE_AREA_SIZE);
break;
default:
dev_warn(denali->dev,
- "Spectra: Unknown Hynix NAND (Device ID: 0x%x)."
- "Will use default parameter values instead.\n",
- device_id);
+ "Spectra: Unknown Hynix NAND (Device ID: 0x%x).\n"
+ "Will use default parameter values instead.\n",
+ device_id);
}
}
-/* determines how many NAND chips are connected to the controller. Note for
+/*
+ * determines how many NAND chips are connected to the controller. Note for
* Intel CE4100 devices we don't support more than one device.
*/
static void find_valid_banks(struct denali_nand_info *denali)
denali->total_used_banks = 1;
for (i = 0; i < denali->max_banks; i++) {
- index_addr(denali, (uint32_t)(MODE_11 | (i << 24) | 0), 0x90);
- index_addr(denali, (uint32_t)(MODE_11 | (i << 24) | 1), 0);
- index_addr_read_data(denali,
- (uint32_t)(MODE_11 | (i << 24) | 2), &id[i]);
+ index_addr(denali, MODE_11 | (i << 24) | 0, 0x90);
+ index_addr(denali, MODE_11 | (i << 24) | 1, 0);
+ index_addr_read_data(denali, MODE_11 | (i << 24) | 2, &id[i]);
dev_dbg(denali->dev,
"Return 1st ID for bank[%d]: %x\n", i, id[i]);
}
if (denali->platform == INTEL_CE4100) {
- /* Platform limitations of the CE4100 device limit
+ /*
+ * Platform limitations of the CE4100 device limit
* users to a single chip solution for NAND.
* Multichip support is not enabled.
*/
if (denali->total_used_banks != 1) {
dev_err(denali->dev,
- "Sorry, Intel CE4100 only supports "
- "a single NAND device.\n");
+ "Sorry, Intel CE4100 only supports a single NAND device.\n");
BUG();
}
}
static void detect_partition_feature(struct denali_nand_info *denali)
{
- /* For MRST platform, denali->fwblks represent the
+ /*
+ * For MRST platform, denali->fwblks represent the
* number of blocks firmware is taken,
* FW is in protect partition and MTD driver has no
* permission to access it. So let driver know how many
* blocks it can't touch.
- * */
+ */
if (ioread32(denali->flash_reg + FEATURES) & FEATURES__PARTITION) {
if ((ioread32(denali->flash_reg + PERM_SRC_ID(1)) &
PERM_SRC_ID__SRCID) == SPECTRA_PARTITION_ID) {
+
(ioread32(denali->flash_reg + MIN_BLK_ADDR(1)) &
MIN_BLK_ADDR__VALUE);
- } else
+ } else {
denali->fwblks = SPECTRA_START_BLOCK;
- } else
+ }
+ } else {
denali->fwblks = SPECTRA_START_BLOCK;
+ }
}
static uint16_t denali_nand_timing_set(struct denali_nand_info *denali)
{
uint16_t status = PASS;
uint32_t id_bytes[8], addr;
- uint8_t i, maf_id, device_id;
+ uint8_t maf_id, device_id;
+ int i;
- dev_dbg(denali->dev,
- "%s, Line %d, Function: %s\n",
+ dev_dbg(denali->dev, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
- /* Use read id method to get device ID and other
- * params. For some NAND chips, controller can't
- * report the correct device ID by reading from
- * DEVICE_ID register
- * */
- addr = (uint32_t)MODE_11 | BANK(denali->flash_bank);
- index_addr(denali, (uint32_t)addr | 0, 0x90);
- index_addr(denali, (uint32_t)addr | 1, 0);
+ /*
+ * Use read id method to get device ID and other params.
+ * For some NAND chips, controller can't report the correct
+ * device ID by reading from DEVICE_ID register
+ */
+ addr = MODE_11 | BANK(denali->flash_bank);
+ index_addr(denali, addr | 0, 0x90);
+ index_addr(denali, addr | 1, 0);
for (i = 0; i < 8; i++)
index_addr_read_data(denali, addr | 2, &id_bytes[i]);
maf_id = id_bytes[0];
}
dev_info(denali->dev,
- "Dump timing register values:"
+ "Dump timing register values:\n"
"acc_clks: %d, re_2_we: %d, re_2_re: %d\n"
"we_2_re: %d, addr_2_data: %d, rdwr_en_lo_cnt: %d\n"
"rdwr_en_hi_cnt: %d, cs_setup_cnt: %d\n",
detect_partition_feature(denali);
- /* If the user specified to override the default timings
+ /*
+ * If the user specified to override the default timings
* with a specific ONFI mode, we apply those changes here.
*/
if (onfi_timing_mode != NAND_DEFAULT_TIMINGS)
uint16_t INT_ENABLE)
{
dev_dbg(denali->dev, "%s, Line %d, Function: %s\n",
- __FILE__, __LINE__, __func__);
+ __FILE__, __LINE__, __func__);
if (INT_ENABLE)
iowrite32(1, denali->flash_reg + GLOBAL_INT_ENABLE);
iowrite32(0, denali->flash_reg + GLOBAL_INT_ENABLE);
}
-/* validation function to verify that the controlling software is making
+/*
+ * validation function to verify that the controlling software is making
* a valid request
*/
static inline bool is_flash_bank_valid(int flash_bank)
{
- return (flash_bank >= 0 && flash_bank < 4);
+ return flash_bank >= 0 && flash_bank < 4;
}
static void denali_irq_init(struct denali_nand_info *denali)
{
- uint32_t int_mask = 0;
+ uint32_t int_mask;
int i;
/* Disable global interrupts */
iowrite32(int_mask, denali->flash_reg + INTR_EN(i));
}
-/* This function only returns when an interrupt that this driver cares about
+/*
+ * This function only returns when an interrupt that this driver cares about
* occurs. This is to reduce the overhead of servicing interrupts
*/
static inline uint32_t denali_irq_detected(struct denali_nand_info *denali)
static inline void clear_interrupt(struct denali_nand_info *denali,
uint32_t irq_mask)
{
- uint32_t intr_status_reg = 0;
+ uint32_t intr_status_reg;
intr_status_reg = INTR_STATUS(denali->flash_bank);
static void clear_interrupts(struct denali_nand_info *denali)
{
- uint32_t status = 0x0;
+ uint32_t status;
+
spin_lock_irq(&denali->irq_lock);
status = read_interrupt_status(denali);
static uint32_t read_interrupt_status(struct denali_nand_info *denali)
{
- uint32_t intr_status_reg = 0;
+ uint32_t intr_status_reg;
intr_status_reg = INTR_STATUS(denali->flash_bank);
return ioread32(denali->flash_reg + intr_status_reg);
}
-/* This is the interrupt service routine. It handles all interrupts
- * sent to this device. Note that on CE4100, this is a shared
- * interrupt.
+/*
+ * This is the interrupt service routine. It handles all interrupts
+ * sent to this device. Note that on CE4100, this is a shared interrupt.
*/
static irqreturn_t denali_isr(int irq, void *dev_id)
{
struct denali_nand_info *denali = dev_id;
- uint32_t irq_status = 0x0;
+ uint32_t irq_status;
irqreturn_t result = IRQ_NONE;
spin_lock(&denali->irq_lock);
- /* check to see if a valid NAND chip has
- * been selected.
- */
+ /* check to see if a valid NAND chip has been selected. */
if (is_flash_bank_valid(denali->flash_bank)) {
- /* check to see if controller generated
- * the interrupt, since this is a shared interrupt */
+ /*
+ * check to see if controller generated the interrupt,
+ * since this is a shared interrupt
+ */
irq_status = denali_irq_detected(denali);
if (irq_status != 0) {
/* handle interrupt */
/* first acknowledge it */
clear_interrupt(denali, irq_status);
- /* store the status in the device context for someone
- to read */
+ /*
+ * store the status in the device context for someone
+ * to read
+ */
denali->irq_status |= irq_status;
/* notify anyone who cares that it happened */
complete(&denali->complete);
static uint32_t wait_for_irq(struct denali_nand_info *denali, uint32_t irq_mask)
{
- unsigned long comp_res = 0;
- uint32_t intr_status = 0;
- bool retry = false;
+ unsigned long comp_res;
+ uint32_t intr_status;
unsigned long timeout = msecs_to_jiffies(1000);
do {
spin_unlock_irq(&denali->irq_lock);
/* our interrupt was detected */
break;
- } else {
- /* these are not the interrupts you are looking for -
- * need to wait again */
- spin_unlock_irq(&denali->irq_lock);
- retry = true;
}
+
+ /*
+ * these are not the interrupts you are looking for -
+ * need to wait again
+ */
+ spin_unlock_irq(&denali->irq_lock);
} while (comp_res != 0);
if (comp_res == 0) {
return intr_status;
}
-/* This helper function setups the registers for ECC and whether or not
- * the spare area will be transferred. */
+/*
+ * This helper function setups the registers for ECC and whether or not
+ * the spare area will be transferred.
+ */
static void setup_ecc_for_xfer(struct denali_nand_info *denali, bool ecc_en,
bool transfer_spare)
{
- int ecc_en_flag = 0, transfer_spare_flag = 0;
+ int ecc_en_flag, transfer_spare_flag;
/* set ECC, transfer spare bits if needed */
ecc_en_flag = ecc_en ? ECC_ENABLE__FLAG : 0;
/* Enable spare area/ECC per user's request. */
iowrite32(ecc_en_flag, denali->flash_reg + ECC_ENABLE);
- iowrite32(transfer_spare_flag,
- denali->flash_reg + TRANSFER_SPARE_REG);
+ iowrite32(transfer_spare_flag, denali->flash_reg + TRANSFER_SPARE_REG);
}
-/* sends a pipeline command operation to the controller. See the Denali NAND
+/*
+ * sends a pipeline command operation to the controller. See the Denali NAND
* controller's user guide for more information (section 4.2.3.6).
*/
static int denali_send_pipeline_cmd(struct denali_nand_info *denali,
- bool ecc_en,
- bool transfer_spare,
- int access_type,
- int op)
+ bool ecc_en, bool transfer_spare,
+ int access_type, int op)
{
int status = PASS;
- uint32_t addr = 0x0, cmd = 0x0, page_count = 1, irq_status = 0,
- irq_mask = 0;
+ uint32_t page_count = 1;
+ uint32_t addr, cmd, irq_status, irq_mask;
if (op == DENALI_READ)
irq_mask = INTR_STATUS__LOAD_COMP;
setup_ecc_for_xfer(denali, ecc_en, transfer_spare);
- /* clear interrupts */
clear_interrupts(denali);
addr = BANK(denali->flash_bank) | denali->page;
} else if (op == DENALI_WRITE && access_type == SPARE_ACCESS) {
/* read spare area */
cmd = MODE_10 | addr;
- index_addr(denali, (uint32_t)cmd, access_type);
+ index_addr(denali, cmd, access_type);
cmd = MODE_01 | addr;
iowrite32(cmd, denali->flash_mem);
} else if (op == DENALI_READ) {
/* setup page read request for access type */
cmd = MODE_10 | addr;
- index_addr(denali, (uint32_t)cmd, access_type);
+ index_addr(denali, cmd, access_type);
- /* page 33 of the NAND controller spec indicates we should not
- use the pipeline commands in Spare area only mode. So we
- don't.
+ /*
+ * page 33 of the NAND controller spec indicates we should not
+ * use the pipeline commands in Spare area only mode.
+ * So we don't.
*/
if (access_type == SPARE_ACCESS) {
cmd = MODE_01 | addr;
iowrite32(cmd, denali->flash_mem);
} else {
- index_addr(denali, (uint32_t)cmd,
- 0x2000 | op | page_count);
+ index_addr(denali, cmd,
+ PIPELINE_ACCESS | op | page_count);
- /* wait for command to be accepted
+ /*
+ * wait for command to be accepted
* can always use status0 bit as the
- * mask is identical for each
- * bank. */
+ * mask is identical for each bank.
+ */
irq_status = wait_for_irq(denali, irq_mask);
if (irq_status == 0) {
dev_err(denali->dev,
- "cmd, page, addr on timeout "
- "(0x%x, 0x%x, 0x%x)\n",
- cmd, denali->page, addr);
+ "cmd, page, addr on timeout (0x%x, 0x%x, 0x%x)\n",
+ cmd, denali->page, addr);
status = FAIL;
} else {
cmd = MODE_01 | addr;
/* helper function that simply writes a buffer to the flash */
static int write_data_to_flash_mem(struct denali_nand_info *denali,
- const uint8_t *buf,
- int len)
+ const uint8_t *buf, int len)
{
- uint32_t i = 0, *buf32;
+ uint32_t *buf32;
+ int i;
- /* verify that the len is a multiple of 4. see comment in
- * read_data_from_flash_mem() */
+ /*
+ * verify that the len is a multiple of 4.
+ * see comment in read_data_from_flash_mem()
+ */
BUG_ON((len % 4) != 0);
/* write the data to the flash memory */
buf32 = (uint32_t *)buf;
for (i = 0; i < len / 4; i++)
iowrite32(*buf32++, denali->flash_mem + 0x10);
- return i*4; /* intent is to return the number of bytes read */
+ return i * 4; /* intent is to return the number of bytes read */
}
/* helper function that simply reads a buffer from the flash */
static int read_data_from_flash_mem(struct denali_nand_info *denali,
- uint8_t *buf,
- int len)
+ uint8_t *buf, int len)
{
- uint32_t i = 0, *buf32;
-
- /* we assume that len will be a multiple of 4, if not
- * it would be nice to know about it ASAP rather than
- * have random failures...
- * This assumption is based on the fact that this
- * function is designed to be used to read flash pages,
- * which are typically multiples of 4...
- */
+ uint32_t *buf32;
+ int i;
+ /*
+ * we assume that len will be a multiple of 4, if not it would be nice
+ * to know about it ASAP rather than have random failures...
+ * This assumption is based on the fact that this function is designed
+ * to be used to read flash pages, which are typically multiples of 4.
+ */
BUG_ON((len % 4) != 0);
/* transfer the data from the flash */
buf32 = (uint32_t *)buf;
for (i = 0; i < len / 4; i++)
*buf32++ = ioread32(denali->flash_mem + 0x10);
- return i*4; /* intent is to return the number of bytes read */
+ return i * 4; /* intent is to return the number of bytes read */
}
/* writes OOB data to the device */
static int write_oob_data(struct mtd_info *mtd, uint8_t *buf, int page)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
- uint32_t irq_status = 0;
+ uint32_t irq_status;
uint32_t irq_mask = INTR_STATUS__PROGRAM_COMP |
INTR_STATUS__PROGRAM_FAIL;
int status = 0;
static void read_oob_data(struct mtd_info *mtd, uint8_t *buf, int page)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
- uint32_t irq_mask = INTR_STATUS__LOAD_COMP,
- irq_status = 0, addr = 0x0, cmd = 0x0;
+ uint32_t irq_mask = INTR_STATUS__LOAD_COMP;
+ uint32_t irq_status, addr, cmd;
denali->page = page;
DENALI_READ) == PASS) {
read_data_from_flash_mem(denali, buf, mtd->oobsize);
- /* wait for command to be accepted
- * can always use status0 bit as the mask is identical for each
- * bank. */
+ /*
+ * wait for command to be accepted
+ * can always use status0 bit as the
+ * mask is identical for each bank.
+ */
irq_status = wait_for_irq(denali, irq_mask);
if (irq_status == 0)
dev_err(denali->dev, "page on OOB timeout %d\n",
denali->page);
- /* We set the device back to MAIN_ACCESS here as I observed
+ /*
+ * We set the device back to MAIN_ACCESS here as I observed
* instability with the controller if you do a block erase
* and the last transaction was a SPARE_ACCESS. Block erase
* is reliable (according to the MTD test infrastructure)
*/
addr = BANK(denali->flash_bank) | denali->page;
cmd = MODE_10 | addr;
- index_addr(denali, (uint32_t)cmd, MAIN_ACCESS);
+ index_addr(denali, cmd, MAIN_ACCESS);
}
}
-/* this function examines buffers to see if they contain data that
+/*
+ * this function examines buffers to see if they contain data that
* indicate that the buffer is part of an erased region of flash.
*/
static bool is_erased(uint8_t *buf, int len)
{
- int i = 0;
+ int i;
+
for (i = 0; i < len; i++)
if (buf[i] != 0xFF)
return false;
if (irq_status & INTR_STATUS__ECC_ERR) {
/* read the ECC errors. we'll ignore them for now */
- uint32_t err_address = 0, err_correction_info = 0;
- uint32_t err_byte = 0, err_sector = 0, err_device = 0;
- uint32_t err_correction_value = 0;
+ uint32_t err_address, err_correction_info, err_byte,
+ err_sector, err_device, err_correction_value;
denali_set_intr_modes(denali, false);
do {
err_device = ECC_ERR_DEVICE(err_correction_info);
if (ECC_ERROR_CORRECTABLE(err_correction_info)) {
- /* If err_byte is larger than ECC_SECTOR_SIZE,
+ /*
+ * If err_byte is larger than ECC_SECTOR_SIZE,
* means error happened in OOB, so we ignore
* it. It's no need for us to correct it
* err_device is represented the NAND error
* bits are happened in if there are more
* than one NAND connected.
- * */
+ */
if (err_byte < ECC_SECTOR_SIZE) {
int offset;
+
offset = (err_sector *
ECC_SECTOR_SIZE +
err_byte) *
bitflips++;
}
} else {
- /* if the error is not correctable, need to
+ /*
+ * if the error is not correctable, need to
* look at the page to see if it is an erased
* page. if so, then it's not a real ECC error
- * */
+ */
check_erased_page = true;
}
} while (!ECC_LAST_ERR(err_correction_info));
- /* Once handle all ecc errors, controller will triger
+ /*
+ * Once handle all ecc errors, controller will triger
* a ECC_TRANSACTION_DONE interrupt, so here just wait
* for a while for this interrupt
- * */
+ */
while (!(read_interrupt_status(denali) &
INTR_STATUS__ECC_TRANSACTION_DONE))
cpu_relax();
/* programs the controller to either enable/disable DMA transfers */
static void denali_enable_dma(struct denali_nand_info *denali, bool en)
{
- uint32_t reg_val = 0x0;
-
- if (en)
- reg_val = DMA_ENABLE__FLAG;
-
- iowrite32(reg_val, denali->flash_reg + DMA_ENABLE);
+ iowrite32(en ? DMA_ENABLE__FLAG : 0, denali->flash_reg + DMA_ENABLE);
ioread32(denali->flash_reg + DMA_ENABLE);
}
/* setups the HW to perform the data DMA */
static void denali_setup_dma(struct denali_nand_info *denali, int op)
{
- uint32_t mode = 0x0;
+ uint32_t mode;
const int page_count = 1;
- dma_addr_t addr = denali->buf.dma_buf;
+ uint32_t addr = denali->buf.dma_buf;
mode = MODE_10 | BANK(denali->flash_bank);
index_addr(denali, mode | denali->page, 0x2000 | op | page_count);
/* 2. set memory high address bits 23:8 */
- index_addr(denali, mode | ((uint16_t)(addr >> 16) << 8), 0x2200);
+ index_addr(denali, mode | ((addr >> 16) << 8), 0x2200);
/* 3. set memory low address bits 23:8 */
- index_addr(denali, mode | ((uint16_t)addr << 8), 0x2300);
+ index_addr(denali, mode | ((addr & 0xff) << 8), 0x2300);
- /* 4. interrupt when complete, burst len = 64 bytes*/
+ /* 4. interrupt when complete, burst len = 64 bytes */
index_addr(denali, mode | 0x14000, 0x2400);
}
-/* writes a page. user specifies type, and this function handles the
- * configuration details. */
+/*
+ * writes a page. user specifies type, and this function handles the
+ * configuration details.
+ */
static int write_page(struct mtd_info *mtd, struct nand_chip *chip,
const uint8_t *buf, bool raw_xfer)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
-
dma_addr_t addr = denali->buf.dma_buf;
size_t size = denali->mtd.writesize + denali->mtd.oobsize;
-
- uint32_t irq_status = 0;
+ uint32_t irq_status;
uint32_t irq_mask = INTR_STATUS__DMA_CMD_COMP |
INTR_STATUS__PROGRAM_FAIL;
- /* if it is a raw xfer, we want to disable ecc, and send
- * the spare area.
+ /*
+ * if it is a raw xfer, we want to disable ecc and send the spare area.
* !raw_xfer - enable ecc
* raw_xfer - transfer spare
*/
irq_status = wait_for_irq(denali, irq_mask);
if (irq_status == 0) {
- dev_err(denali->dev,
- "timeout on write_page (type = %d)\n",
- raw_xfer);
- denali->status =
- (irq_status & INTR_STATUS__PROGRAM_FAIL) ?
- NAND_STATUS_FAIL : PASS;
+ dev_err(denali->dev, "timeout on write_page (type = %d)\n",
+ raw_xfer);
+ denali->status = NAND_STATUS_FAIL;
}
denali_enable_dma(denali, false);
/* NAND core entry points */
-/* this is the callback that the NAND core calls to write a page. Since
+/*
+ * this is the callback that the NAND core calls to write a page. Since
* writing a page with ECC or without is similar, all the work is done
* by write_page above.
- * */
+ */
static int denali_write_page(struct mtd_info *mtd, struct nand_chip *chip,
const uint8_t *buf, int oob_required)
{
- /* for regular page writes, we let HW handle all the ECC
- * data written to the device. */
+ /*
+ * for regular page writes, we let HW handle all the ECC
+ * data written to the device.
+ */
return write_page(mtd, chip, buf, false);
}
-/* This is the callback that the NAND core calls to write a page without ECC.
+/*
+ * This is the callback that the NAND core calls to write a page without ECC.
* raw access is similar to ECC page writes, so all the work is done in the
* write_page() function above.
*/
static int denali_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
const uint8_t *buf, int oob_required)
{
- /* for raw page writes, we want to disable ECC and simply write
- whatever data is in the buffer. */
+ /*
+ * for raw page writes, we want to disable ECC and simply write
+ * whatever data is in the buffer.
+ */
return write_page(mtd, chip, buf, true);
}
dma_addr_t addr = denali->buf.dma_buf;
size_t size = denali->mtd.writesize + denali->mtd.oobsize;
- uint32_t irq_status = 0;
+ uint32_t irq_status;
uint32_t irq_mask = INTR_STATUS__ECC_TRANSACTION_DONE |
INTR_STATUS__ECC_ERR;
bool check_erased_page = false;
if (page != denali->page) {
- dev_err(denali->dev, "IN %s: page %d is not"
- " equal to denali->page %d, investigate!!",
- __func__, page, denali->page);
+ dev_err(denali->dev,
+ "IN %s: page %d is not equal to denali->page %d",
+ __func__, page, denali->page);
BUG();
}
uint8_t *buf, int oob_required, int page)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
-
dma_addr_t addr = denali->buf.dma_buf;
size_t size = denali->mtd.writesize + denali->mtd.oobsize;
-
- uint32_t irq_status = 0;
uint32_t irq_mask = INTR_STATUS__DMA_CMD_COMP;
if (page != denali->page) {
- dev_err(denali->dev, "IN %s: page %d is not"
- " equal to denali->page %d, investigate!!",
- __func__, page, denali->page);
+ dev_err(denali->dev,
+ "IN %s: page %d is not equal to denali->page %d",
+ __func__, page, denali->page);
BUG();
}
denali_setup_dma(denali, DENALI_READ);
/* wait for operation to complete */
- irq_status = wait_for_irq(denali, irq_mask);
+ wait_for_irq(denali, irq_mask);
dma_sync_single_for_cpu(denali->dev, addr, size, DMA_FROM_DEVICE);
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
int status = denali->status;
+
denali->status = 0;
return status;
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
- uint32_t cmd = 0x0, irq_status = 0;
+ uint32_t cmd, irq_status;
- /* clear interrupts */
clear_interrupts(denali);
/* setup page read request for access type */
cmd = MODE_10 | BANK(denali->flash_bank) | page;
- index_addr(denali, (uint32_t)cmd, 0x1);
+ index_addr(denali, cmd, 0x1);
/* wait for erase to complete or failure to occur */
irq_status = wait_for_irq(denali, INTR_STATUS__ERASE_COMP |
INTR_STATUS__ERASE_FAIL);
- return (irq_status & INTR_STATUS__ERASE_FAIL) ? NAND_STATUS_FAIL : PASS;
+ return irq_status & INTR_STATUS__ERASE_FAIL ? NAND_STATUS_FAIL : PASS;
}
static void denali_cmdfunc(struct mtd_info *mtd, unsigned int cmd, int col,
case NAND_CMD_READID:
case NAND_CMD_PARAM:
reset_buf(denali);
- /*sometimes ManufactureId read from register is not right
+ /*
+ * sometimes ManufactureId read from register is not right
* e.g. some of Micron MT29F32G08QAA MLC NAND chips
* So here we send READID cmd to NAND insteand
- * */
- addr = (uint32_t)MODE_11 | BANK(denali->flash_bank);
- index_addr(denali, (uint32_t)addr | 0, 0x90);
- index_addr(denali, (uint32_t)addr | 1, 0);
+ */
+ addr = MODE_11 | BANK(denali->flash_bank);
+ index_addr(denali, addr | 0, 0x90);
+ index_addr(denali, addr | 1, 0);
for (i = 0; i < 8; i++) {
- index_addr_read_data(denali,
- (uint32_t)addr | 2,
- &id);
+ index_addr_read_data(denali, addr | 2, &id);
write_byte_to_buf(denali, id);
}
break;
uint8_t *ecc_code)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
- dev_err(denali->dev,
- "denali_ecc_calculate called unexpectedly\n");
+
+ dev_err(denali->dev, "denali_ecc_calculate called unexpectedly\n");
BUG();
return -EIO;
}
uint8_t *read_ecc, uint8_t *calc_ecc)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
- dev_err(denali->dev,
- "denali_ecc_correct called unexpectedly\n");
+
+ dev_err(denali->dev, "denali_ecc_correct called unexpectedly\n");
BUG();
return -EIO;
}
static void denali_ecc_hwctl(struct mtd_info *mtd, int mode)
{
struct denali_nand_info *denali = mtd_to_denali(mtd);
- dev_err(denali->dev,
- "denali_ecc_hwctl called unexpectedly\n");
+
+ dev_err(denali->dev, "denali_ecc_hwctl called unexpectedly\n");
BUG();
}
/* end NAND core entry points */
/* Initialization code to bring the device up to a known good state */
static void denali_hw_init(struct denali_nand_info *denali)
{
- /* tell driver how many bit controller will skip before
+ /*
+ * tell driver how many bit controller will skip before
* writing ECC code in OOB, this register may be already
* set by firmware. So we read this value out.
* if this value is 0, just let it be.
- * */
+ */
denali->bbtskipbytes = ioread32(denali->flash_reg +
SPARE_AREA_SKIP_BYTES);
detect_max_banks(denali);
denali_irq_init(denali);
}
-/* Althogh controller spec said SLC ECC is forceb to be 4bit,
+/*
+ * Althogh controller spec said SLC ECC is forceb to be 4bit,
* but denali controller in MRST only support 15bit and 8bit ECC
* correction
- * */
+ */
#define ECC_8BITS 14
static struct nand_ecclayout nand_8bit_oob = {
.eccbytes = 14,
denali->idx = 0;
/* setup interrupt handler */
- /* the completion object will be used to notify
- * the callee that the interrupt is done */
+ /*
+ * the completion object will be used to notify
+ * the callee that the interrupt is done
+ */
init_completion(&denali->complete);
- /* the spinlock will be used to synchronize the ISR
- * with any element that might be access shared
- * data (interrupt status) */
+ /*
+ * the spinlock will be used to synchronize the ISR with any
+ * element that might be access shared data (interrupt status)
+ */
spin_lock_init(&denali->irq_lock);
/* indicate that MTD has not selected a valid bank yet */
int ret;
if (denali->platform == INTEL_CE4100) {
- /* Due to a silicon limitation, we can only support
+ /*
+ * Due to a silicon limitation, we can only support
* ONFI timing mode 1 and below.
*/
if (onfi_timing_mode < -1 || onfi_timing_mode > 1) {
denali_hw_init(denali);
denali_drv_init(denali);
- /* denali_isr register is done after all the hardware
- * initilization is finished*/
+ /*
+ * denali_isr register is done after all the hardware
+ * initilization is finished
+ */
if (request_irq(denali->irq, denali_isr, IRQF_SHARED,
DENALI_NAND_NAME, denali)) {
pr_err("Spectra: Unable to allocate IRQ\n");
denali->nand.read_byte = denali_read_byte;
denali->nand.waitfunc = denali_waitfunc;
- /* scan for NAND devices attached to the controller
+ /*
+ * scan for NAND devices attached to the controller
* this is the first stage in a two step process to register
- * with the nand subsystem */
+ * with the nand subsystem
+ */
if (nand_scan_ident(&denali->mtd, denali->max_banks, NULL)) {
ret = -ENXIO;
goto failed_req_irq;
goto failed_req_irq;
}
- /* support for multi nand
- * MTD known nothing about multi nand,
- * so we should tell it the real pagesize
- * and anything necessery
+ /*
+ * support for multi nand
+ * MTD known nothing about multi nand, so we should tell it
+ * the real pagesize and anything necessery
*/
denali->devnum = ioread32(denali->flash_reg + DEVICES_CONNECTED);
denali->nand.chipsize <<= (denali->devnum - 1);
denali->mtd.size = denali->nand.numchips * denali->nand.chipsize;
denali->bbtskipbytes *= denali->devnum;
- /* second stage of the NAND scan
+ /*
+ * second stage of the NAND scan
* this stage requires information regarding ECC and
- * bad block management. */
+ * bad block management.
+ */
/* Bad block management */
denali->nand.bbt_td = &bbt_main_descr;
denali->nand.options |= NAND_SKIP_BBTSCAN;
denali->nand.ecc.mode = NAND_ECC_HW_SYNDROME;
- /* Denali Controller only support 15bit and 8bit ECC in MRST,
+ /*
+ * Denali Controller only support 15bit and 8bit ECC in MRST,
* so just let controller do 15bit ECC for MLC and 8bit ECC for
* SLC if possible.
* */
} else if (denali->mtd.oobsize < (denali->bbtskipbytes +
ECC_8BITS * (denali->mtd.writesize /
ECC_SECTOR_SIZE))) {
- pr_err("Your NAND chip OOB is not large enough to \
- contain 8bit ECC correction codes");
+ pr_err("Your NAND chip OOB is not large enough to contain 8bit ECC correction codes");
goto failed_req_irq;
} else {
denali->nand.ecc.strength = 8;
denali->mtd.oobsize - denali->nand.ecc.layout->eccbytes -
denali->bbtskipbytes;
- /* Let driver know the total blocks number and
- * how many blocks contained by each nand chip.
- * blksperchip will help driver to know how many
- * blocks is taken by FW.
- * */
- denali->totalblks = denali->mtd.size >>
- denali->nand.phys_erase_shift;
+ /*
+ * Let driver know the total blocks number and how many blocks
+ * contained by each nand chip. blksperchip will help driver to
+ * know how many blocks is taken by FW.
+ */
+ denali->totalblks = denali->mtd.size >> denali->nand.phys_erase_shift;
denali->blksperchip = denali->totalblks / denali->nand.numchips;
- /* These functions are required by the NAND core framework, otherwise,
+ /*
+ * These functions are required by the NAND core framework, otherwise,
* the NAND core will assert. However, we don't need them, so we'll stub
- * them out. */
+ * them out.
+ */
denali->nand.ecc.calculate = denali_ecc_calculate;
denali->nand.ecc.correct = denali_ecc_correct;
denali->nand.ecc.hwctl = denali_ecc_hwctl;
{
denali_irq_cleanup(denali->irq, denali);
dma_unmap_single(denali->dev, denali->buf.dma_buf,
- denali->mtd.writesize + denali->mtd.oobsize,
- DMA_BIDIRECTIONAL);
+ denali->mtd.writesize + denali->mtd.oobsize,
+ DMA_BIDIRECTIONAL);
}
EXPORT_SYMBOL(denali_remove);
*
*/
+#ifndef __DENALI_H__
+#define __DENALI_H__
+
#include <linux/mtd/nand.h>
#define DEVICE_RESET 0x0
#define ONFI_BLOOM_TIME 1
#define MODE5_WORKAROUND 0
-/* lld_nand.h */
-/*
- * NAND Flash Controller Device Driver
- * Copyright (c) 2009, Intel Corporation and its suppliers.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-
-#ifndef _LLD_NAND_
-#define _LLD_NAND_
#define MODE_00 0x00000000
#define MODE_01 0x04000000
extern int denali_init(struct denali_nand_info *denali);
extern void denali_remove(struct denali_nand_info *denali);
-#endif /*_LLD_NAND_*/
+#endif /* __DENALI_H__ */
chip->select_chip(mtd, chipnr);
+ /*
+ * Reset the chip.
+ * If we want to check the WP through READ STATUS and check the bit 7
+ * we must reset the chip
+ * some operation can also clear the bit 7 of status register
+ * eg. erase/program a locked block
+ */
+ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
+
/* Check, if it is write protected */
if (nand_check_wp(mtd)) {
pr_debug("%s: device is write protected!\n",
chip->select_chip(mtd, chipnr);
+ /*
+ * Reset the chip.
+ * If we want to check the WP through READ STATUS and check the bit 7
+ * we must reset the chip
+ * some operation can also clear the bit 7 of status register
+ * eg. erase/program a locked block
+ */
+ chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
+
/* Check, if it is write protected */
if (nand_check_wp(mtd)) {
pr_debug("%s: device is write protected!\n",
blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;
/* Invalidate the page cache, when we write to the cached page */
- if (to <= (chip->pagebuf << chip->page_shift) &&
- (chip->pagebuf << chip->page_shift) < (to + ops->len))
+ if (to <= ((loff_t)chip->pagebuf << chip->page_shift) &&
+ ((loff_t)chip->pagebuf << chip->page_shift) < (to + ops->len))
chip->pagebuf = -1;
/* Don't allow multipage oob writes with offset */
chip->options |= type->options;
chip->ecc_strength_ds = NAND_ECC_STRENGTH(type);
chip->ecc_step_ds = NAND_ECC_STEP(type);
+ chip->onfi_timing_mode_default =
+ type->onfi_timing_mode_default;
*busw = type->options & NAND_BUSWIDTH_16;
case NAND_ECC_HW_OOB_FIRST:
/* Similar to NAND_ECC_HW, but a separate read_page handle */
if (!ecc->calculate || !ecc->correct || !ecc->hwctl) {
- pr_warn("No ECC functions supplied; "
- "hardware ECC not possible\n");
+ pr_warn("No ECC functions supplied; hardware ECC not possible\n");
BUG();
}
if (!ecc->read_page)
ecc->read_page == nand_read_page_hwecc ||
!ecc->write_page ||
ecc->write_page == nand_write_page_hwecc)) {
- pr_warn("No ECC functions supplied; "
- "hardware ECC not possible\n");
+ pr_warn("No ECC functions supplied; hardware ECC not possible\n");
BUG();
}
/* Use standard syndrome read/write page function? */
}
break;
}
- pr_warn("%d byte HW ECC not possible on "
- "%d byte page size, fallback to SW ECC\n",
- ecc->size, mtd->writesize);
+ 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;
case NAND_ECC_SOFT:
break;
case NAND_ECC_NONE:
- pr_warn("NAND_ECC_NONE selected by board driver. "
- "This is not recommended!\n");
+ pr_warn("NAND_ECC_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;
res = mtd_read(mtd, from, len, &retlen, buf);
if (res < 0) {
if (mtd_is_eccerr(res)) {
- pr_info("nand_bbt: ECC error in BBT at "
- "0x%012llx\n", from & ~mtd->writesize);
+ pr_info("nand_bbt: ECC error in BBT at 0x%012llx\n",
+ from & ~mtd->writesize);
return res;
} else if (mtd_is_bitflip(res)) {
- pr_info("nand_bbt: corrected error in BBT at "
- "0x%012llx\n", from & ~mtd->writesize);
+ pr_info("nand_bbt: corrected error in BBT at 0x%012llx\n",
+ from & ~mtd->writesize);
ret = res;
} else {
pr_info("nand_bbt: error reading BBT\n");
if (td->pages[i] == -1)
pr_warn("Bad block table not found for chip %d\n", i);
else
- pr_info("Bad block table found at page %d, version "
- "0x%02X\n", td->pages[i], td->version[i]);
+ pr_info("Bad block table found at page %d, version 0x%02X\n",
+ td->pages[i], td->version[i]);
}
return 0;
}
res = mtd_read(mtd, to, len, &retlen, buf);
if (res < 0) {
if (retlen != len) {
- pr_info("nand_bbt: error reading block "
- "for writing the bad block table\n");
+ pr_info("nand_bbt: error reading block for writing the bad block table\n");
return res;
}
- pr_warn("nand_bbt: ECC error while reading "
- "block for writing bad block table\n");
+ pr_warn("nand_bbt: ECC error while reading block for writing bad block table\n");
}
/* Read oob data */
ops.ooblen = (len >> this->page_shift) * mtd->oobsize;
block = (int)(offs >> this->bbt_erase_shift);
res = bbt_get_entry(this, block);
- pr_debug("nand_isbad_bbt(): bbt info for offs 0x%08x: "
- "(block %d) 0x%02x\n",
- (unsigned int)offs, block, res);
+ pr_debug("nand_isbad_bbt(): bbt info for offs 0x%08x: (block %d) 0x%02x\n",
+ (unsigned int)offs, block, res);
switch (res) {
case BBT_BLOCK_GOOD:
{"SDTNRGAMA 64G 3.3V 8-bit",
{ .id = {0x45, 0xde, 0x94, 0x93, 0x76, 0x50} },
SZ_16K, SZ_8K, SZ_4M, 0, 6, 1280, NAND_ECC_INFO(40, SZ_1K) },
+ {"H27UCG8T2ATR-BC 64G 3.3V 8-bit",
+ { .id = {0xad, 0xde, 0x94, 0xda, 0x74, 0xc4} },
+ SZ_8K, SZ_8K, SZ_2M, 0, 6, 640, NAND_ECC_INFO(40, SZ_1K),
+ 4 },
LEGACY_ID_NAND("NAND 4MiB 5V 8-bit", 0x6B, 4, SZ_8K, SP_OPTIONS),
LEGACY_ID_NAND("NAND 4MiB 3,3V 8-bit", 0xE3, 4, SZ_8K, SP_OPTIONS),
.tRHZ_max = 200000,
.tRLOH_min = 0,
.tRP_min = 50000,
- .tRST_max = 250000000000,
+ .tRST_max = 250000000000ULL,
.tWB_max = 200000,
.tRR_min = 40000,
.tWC_min = 100000,
NS_ERR("invalid badblocks.\n");
return -EINVAL;
}
- offset = erase_block_no * ns->geom.secsz;
+ offset = (loff_t)erase_block_no * ns->geom.secsz;
if (mtd_block_markbad(mtd, offset)) {
NS_ERR("invalid badblocks.\n");
return -EINVAL;
struct ndfc_controller *ndfc;
const __be32 *reg;
u32 ccr;
- int err, len, cs;
+ u32 cs;
+ int err, len;
/* Read the reg property to get the chip select */
reg = of_get_property(ofdev->dev.of_node, "reg", &len);
#define BADBLOCK_MARKER_LENGTH 2
-#ifdef CONFIG_MTD_NAND_OMAP_BCH
static u_char bch16_vector[] = {0xf5, 0x24, 0x1c, 0xd0, 0x61, 0xb3, 0xf1, 0x55,
0x2e, 0x2c, 0x86, 0xa3, 0xed, 0x36, 0x1b, 0x78,
0x48, 0x76, 0xa9, 0x3b, 0x97, 0xd1, 0x7a, 0x93,
static u_char bch8_vector[] = {0xf3, 0xdb, 0x14, 0x16, 0x8b, 0xd2, 0xbe, 0xcc,
0xac, 0x6b, 0xff, 0x99, 0x7b};
static u_char bch4_vector[] = {0x00, 0x6b, 0x31, 0xdd, 0x41, 0xbc, 0x10};
-#endif
/* oob info generated runtime depending on ecc algorithm and layout selected */
static struct nand_ecclayout omap_oobinfo;
return 0;
}
-#ifdef CONFIG_MTD_NAND_OMAP_BCH
/**
* erased_sector_bitflips - count bit flips
* @data: data sector buffer
erased_ecc_vec = bch16_vector;
break;
default:
- pr_err("invalid driver configuration\n");
+ dev_err(&info->pdev->dev, "invalid driver configuration\n");
return -EINVAL;
}
err = 0;
for (i = 0; i < eccsteps; i++) {
if (err_vec[i].error_uncorrectable) {
- pr_err("nand: uncorrectable bit-flips found\n");
+ dev_err(&info->pdev->dev,
+ "uncorrectable bit-flips found\n");
err = -EBADMSG;
} else if (err_vec[i].error_reported) {
for (j = 0; j < err_vec[i].error_count; j++) {
1 << bit_pos;
}
} else {
- pr_err("invalid bit-flip @ %d:%d\n",
- byte_pos, bit_pos);
+ dev_err(&info->pdev->dev,
+ "invalid bit-flip @ %d:%d\n",
+ byte_pos, bit_pos);
err = -EBADMSG;
}
}
/**
* is_elm_present - checks for presence of ELM module by scanning DT nodes
* @omap_nand_info: NAND device structure containing platform data
- * @bch_type: 0x0=BCH4, 0x1=BCH8, 0x2=BCH16
*/
-static int is_elm_present(struct omap_nand_info *info,
- struct device_node *elm_node, enum bch_ecc bch_type)
+static bool is_elm_present(struct omap_nand_info *info,
+ struct device_node *elm_node)
{
struct platform_device *pdev;
- struct nand_ecc_ctrl *ecc = &info->nand.ecc;
- int err;
+
/* check whether elm-id is passed via DT */
if (!elm_node) {
- pr_err("nand: error: ELM DT node not found\n");
- return -ENODEV;
+ dev_err(&info->pdev->dev, "ELM devicetree node not found\n");
+ return false;
}
pdev = of_find_device_by_node(elm_node);
/* check whether ELM device is registered */
if (!pdev) {
- pr_err("nand: error: ELM device not found\n");
- return -ENODEV;
+ dev_err(&info->pdev->dev, "ELM device not found\n");
+ return false;
}
/* ELM module available, now configure it */
info->elm_dev = &pdev->dev;
- err = elm_config(info->elm_dev, bch_type,
- (info->mtd.writesize / ecc->size), ecc->size, ecc->bytes);
+ return true;
+}
- return err;
+static bool omap2_nand_ecc_check(struct omap_nand_info *info,
+ struct omap_nand_platform_data *pdata)
+{
+ bool ecc_needs_bch, ecc_needs_omap_bch, ecc_needs_elm;
+
+ switch (info->ecc_opt) {
+ case OMAP_ECC_BCH4_CODE_HW_DETECTION_SW:
+ case OMAP_ECC_BCH8_CODE_HW_DETECTION_SW:
+ ecc_needs_omap_bch = false;
+ ecc_needs_bch = true;
+ ecc_needs_elm = false;
+ break;
+ case OMAP_ECC_BCH4_CODE_HW:
+ case OMAP_ECC_BCH8_CODE_HW:
+ case OMAP_ECC_BCH16_CODE_HW:
+ ecc_needs_omap_bch = true;
+ ecc_needs_bch = false;
+ ecc_needs_elm = true;
+ break;
+ default:
+ ecc_needs_omap_bch = false;
+ ecc_needs_bch = false;
+ ecc_needs_elm = false;
+ break;
+ }
+
+ if (ecc_needs_bch && !IS_ENABLED(CONFIG_MTD_NAND_ECC_BCH)) {
+ dev_err(&info->pdev->dev,
+ "CONFIG_MTD_NAND_ECC_BCH not enabled\n");
+ return false;
+ }
+ if (ecc_needs_omap_bch && !IS_ENABLED(CONFIG_MTD_NAND_OMAP_BCH)) {
+ dev_err(&info->pdev->dev,
+ "CONFIG_MTD_NAND_OMAP_BCH not enabled\n");
+ return false;
+ }
+ if (ecc_needs_elm && !is_elm_present(info, pdata->elm_of_node)) {
+ dev_err(&info->pdev->dev, "ELM not available\n");
+ return false;
+ }
+
+ return true;
}
-#endif /* CONFIG_MTD_NAND_ECC_BCH */
static int omap_nand_probe(struct platform_device *pdev)
{
mtd->owner = THIS_MODULE;
nand_chip = &info->nand;
nand_chip->ecc.priv = NULL;
- nand_chip->options |= NAND_SKIP_BBTSCAN;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
nand_chip->IO_ADDR_R = devm_ioremap_resource(&pdev->dev, res);
nand_chip->chip_delay = 50;
}
+ if (pdata->flash_bbt)
+ nand_chip->bbt_options |= NAND_BBT_USE_FLASH | NAND_BBT_NO_OOB;
+ else
+ nand_chip->options |= NAND_SKIP_BBTSCAN;
+
/* scan NAND device connected to chip controller */
nand_chip->options |= pdata->devsize & NAND_BUSWIDTH_16;
if (nand_scan_ident(mtd, 1, NULL)) {
- pr_err("nand device scan failed, may be bus-width mismatch\n");
+ dev_err(&info->pdev->dev, "scan failed, may be bus-width mismatch\n");
err = -ENXIO;
goto return_error;
}
/* check for small page devices */
if ((mtd->oobsize < 64) && (pdata->ecc_opt != OMAP_ECC_HAM1_CODE_HW)) {
- pr_err("small page devices are not supported\n");
+ dev_err(&info->pdev->dev, "small page devices are not supported\n");
err = -EINVAL;
goto return_error;
}
goto return_error;
}
+ if (!omap2_nand_ecc_check(info, pdata)) {
+ err = -EINVAL;
+ goto return_error;
+ }
+
/* populate MTD interface based on ECC scheme */
ecclayout = &omap_oobinfo;
switch (info->ecc_opt) {
break;
case OMAP_ECC_BCH4_CODE_HW_DETECTION_SW:
-#ifdef CONFIG_MTD_NAND_ECC_BCH
pr_info("nand: using OMAP_ECC_BCH4_CODE_HW_DETECTION_SW\n");
nand_chip->ecc.mode = NAND_ECC_HW;
nand_chip->ecc.size = 512;
nand_chip->ecc.bytes,
&ecclayout);
if (!nand_chip->ecc.priv) {
- pr_err("nand: error: unable to use s/w BCH library\n");
+ dev_err(&info->pdev->dev, "unable to use BCH library\n");
err = -EINVAL;
+ goto return_error;
}
break;
-#else
- pr_err("nand: error: CONFIG_MTD_NAND_ECC_BCH not enabled\n");
- err = -EINVAL;
- goto return_error;
-#endif
case OMAP_ECC_BCH4_CODE_HW:
-#ifdef CONFIG_MTD_NAND_OMAP_BCH
pr_info("nand: using OMAP_ECC_BCH4_CODE_HW ECC scheme\n");
nand_chip->ecc.mode = NAND_ECC_HW;
nand_chip->ecc.size = 512;
/* reserved marker already included in ecclayout->eccbytes */
ecclayout->oobfree->offset =
ecclayout->eccpos[ecclayout->eccbytes - 1] + 1;
- /* This ECC scheme requires ELM H/W block */
- if (is_elm_present(info, pdata->elm_of_node, BCH4_ECC) < 0) {
- pr_err("nand: error: could not initialize ELM\n");
- err = -ENODEV;
+
+ err = elm_config(info->elm_dev, BCH4_ECC,
+ info->mtd.writesize / nand_chip->ecc.size,
+ nand_chip->ecc.size, nand_chip->ecc.bytes);
+ if (err < 0)
goto return_error;
- }
break;
-#else
- pr_err("nand: error: CONFIG_MTD_NAND_OMAP_BCH not enabled\n");
- err = -EINVAL;
- goto return_error;
-#endif
case OMAP_ECC_BCH8_CODE_HW_DETECTION_SW:
-#ifdef CONFIG_MTD_NAND_ECC_BCH
pr_info("nand: using OMAP_ECC_BCH8_CODE_HW_DETECTION_SW\n");
nand_chip->ecc.mode = NAND_ECC_HW;
nand_chip->ecc.size = 512;
nand_chip->ecc.bytes,
&ecclayout);
if (!nand_chip->ecc.priv) {
- pr_err("nand: error: unable to use s/w BCH library\n");
+ dev_err(&info->pdev->dev, "unable to use BCH library\n");
err = -EINVAL;
goto return_error;
}
break;
-#else
- pr_err("nand: error: CONFIG_MTD_NAND_ECC_BCH not enabled\n");
- err = -EINVAL;
- goto return_error;
-#endif
case OMAP_ECC_BCH8_CODE_HW:
-#ifdef CONFIG_MTD_NAND_OMAP_BCH
pr_info("nand: using OMAP_ECC_BCH8_CODE_HW ECC scheme\n");
nand_chip->ecc.mode = NAND_ECC_HW;
nand_chip->ecc.size = 512;
nand_chip->ecc.calculate = omap_calculate_ecc_bch;
nand_chip->ecc.read_page = omap_read_page_bch;
nand_chip->ecc.write_page = omap_write_page_bch;
- /* This ECC scheme requires ELM H/W block */
- err = is_elm_present(info, pdata->elm_of_node, BCH8_ECC);
- if (err < 0) {
- pr_err("nand: error: could not initialize ELM\n");
+
+ err = elm_config(info->elm_dev, BCH8_ECC,
+ info->mtd.writesize / nand_chip->ecc.size,
+ nand_chip->ecc.size, nand_chip->ecc.bytes);
+ if (err < 0)
goto return_error;
- }
+
/* define ECC layout */
ecclayout->eccbytes = nand_chip->ecc.bytes *
(mtd->writesize /
ecclayout->oobfree->offset =
ecclayout->eccpos[ecclayout->eccbytes - 1] + 1;
break;
-#else
- pr_err("nand: error: CONFIG_MTD_NAND_OMAP_BCH not enabled\n");
- err = -EINVAL;
- goto return_error;
-#endif
case OMAP_ECC_BCH16_CODE_HW:
-#ifdef CONFIG_MTD_NAND_OMAP_BCH
pr_info("using OMAP_ECC_BCH16_CODE_HW ECC scheme\n");
nand_chip->ecc.mode = NAND_ECC_HW;
nand_chip->ecc.size = 512;
nand_chip->ecc.calculate = omap_calculate_ecc_bch;
nand_chip->ecc.read_page = omap_read_page_bch;
nand_chip->ecc.write_page = omap_write_page_bch;
- /* This ECC scheme requires ELM H/W block */
- err = is_elm_present(info, pdata->elm_of_node, BCH16_ECC);
- if (err < 0) {
- pr_err("ELM is required for this ECC scheme\n");
+
+ err = elm_config(info->elm_dev, BCH16_ECC,
+ info->mtd.writesize / nand_chip->ecc.size,
+ nand_chip->ecc.size, nand_chip->ecc.bytes);
+ if (err < 0)
goto return_error;
- }
+
/* define ECC layout */
ecclayout->eccbytes = nand_chip->ecc.bytes *
(mtd->writesize /
ecclayout->oobfree->offset =
ecclayout->eccpos[ecclayout->eccbytes - 1] + 1;
break;
-#else
- pr_err("nand: error: CONFIG_MTD_NAND_OMAP_BCH not enabled\n");
- err = -EINVAL;
- goto return_error;
-#endif
default:
- pr_err("nand: error: invalid or unsupported ECC scheme\n");
+ dev_err(&info->pdev->dev, "invalid or unsupported ECC scheme\n");
err = -EINVAL;
goto return_error;
}
ecclayout->oobfree->length = mtd->oobsize - ecclayout->oobfree->offset;
/* check if NAND device's OOB is enough to store ECC signatures */
if (mtd->oobsize < (ecclayout->eccbytes + BADBLOCK_MARKER_LENGTH)) {
- pr_err("not enough OOB bytes required = %d, available=%d\n",
- ecclayout->eccbytes, mtd->oobsize);
+ dev_err(&info->pdev->dev,
+ "not enough OOB bytes required = %d, available=%d\n",
+ ecclayout->eccbytes, mtd->oobsize);
err = -EINVAL;
goto return_error;
}
--- /dev/null
+/*
+ * Error Location Module
+ *
+ * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#define DRIVER_NAME "omap-elm"
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/sched.h>
+#include <linux/pm_runtime.h>
+#include <linux/platform_data/elm.h>
+
+#define ELM_SYSCONFIG 0x010
+#define ELM_IRQSTATUS 0x018
+#define ELM_IRQENABLE 0x01c
+#define ELM_LOCATION_CONFIG 0x020
+#define ELM_PAGE_CTRL 0x080
+#define ELM_SYNDROME_FRAGMENT_0 0x400
+#define ELM_SYNDROME_FRAGMENT_1 0x404
+#define ELM_SYNDROME_FRAGMENT_2 0x408
+#define ELM_SYNDROME_FRAGMENT_3 0x40c
+#define ELM_SYNDROME_FRAGMENT_4 0x410
+#define ELM_SYNDROME_FRAGMENT_5 0x414
+#define ELM_SYNDROME_FRAGMENT_6 0x418
+#define ELM_LOCATION_STATUS 0x800
+#define ELM_ERROR_LOCATION_0 0x880
+
+/* ELM Interrupt Status Register */
+#define INTR_STATUS_PAGE_VALID BIT(8)
+
+/* ELM Interrupt Enable Register */
+#define INTR_EN_PAGE_MASK BIT(8)
+
+/* ELM Location Configuration Register */
+#define ECC_BCH_LEVEL_MASK 0x3
+
+/* ELM syndrome */
+#define ELM_SYNDROME_VALID BIT(16)
+
+/* ELM_LOCATION_STATUS Register */
+#define ECC_CORRECTABLE_MASK BIT(8)
+#define ECC_NB_ERRORS_MASK 0x1f
+
+/* ELM_ERROR_LOCATION_0-15 Registers */
+#define ECC_ERROR_LOCATION_MASK 0x1fff
+
+#define ELM_ECC_SIZE 0x7ff
+
+#define SYNDROME_FRAGMENT_REG_SIZE 0x40
+#define ERROR_LOCATION_SIZE 0x100
+
+struct elm_registers {
+ u32 elm_irqenable;
+ u32 elm_sysconfig;
+ u32 elm_location_config;
+ u32 elm_page_ctrl;
+ u32 elm_syndrome_fragment_6[ERROR_VECTOR_MAX];
+ u32 elm_syndrome_fragment_5[ERROR_VECTOR_MAX];
+ u32 elm_syndrome_fragment_4[ERROR_VECTOR_MAX];
+ u32 elm_syndrome_fragment_3[ERROR_VECTOR_MAX];
+ u32 elm_syndrome_fragment_2[ERROR_VECTOR_MAX];
+ u32 elm_syndrome_fragment_1[ERROR_VECTOR_MAX];
+ u32 elm_syndrome_fragment_0[ERROR_VECTOR_MAX];
+};
+
+struct elm_info {
+ struct device *dev;
+ void __iomem *elm_base;
+ struct completion elm_completion;
+ struct list_head list;
+ enum bch_ecc bch_type;
+ struct elm_registers elm_regs;
+ int ecc_steps;
+ int ecc_syndrome_size;
+};
+
+static LIST_HEAD(elm_devices);
+
+static void elm_write_reg(struct elm_info *info, int offset, u32 val)
+{
+ writel(val, info->elm_base + offset);
+}
+
+static u32 elm_read_reg(struct elm_info *info, int offset)
+{
+ return readl(info->elm_base + offset);
+}
+
+/**
+ * elm_config - Configure ELM module
+ * @dev: ELM device
+ * @bch_type: Type of BCH ecc
+ */
+int elm_config(struct device *dev, enum bch_ecc bch_type,
+ int ecc_steps, int ecc_step_size, int ecc_syndrome_size)
+{
+ u32 reg_val;
+ struct elm_info *info = dev_get_drvdata(dev);
+
+ if (!info) {
+ dev_err(dev, "Unable to configure elm - device not probed?\n");
+ return -ENODEV;
+ }
+ /* ELM cannot detect ECC errors for chunks > 1KB */
+ if (ecc_step_size > ((ELM_ECC_SIZE + 1) / 2)) {
+ dev_err(dev, "unsupported config ecc-size=%d\n", ecc_step_size);
+ return -EINVAL;
+ }
+ /* ELM support 8 error syndrome process */
+ if (ecc_steps > ERROR_VECTOR_MAX) {
+ dev_err(dev, "unsupported config ecc-step=%d\n", ecc_steps);
+ return -EINVAL;
+ }
+
+ reg_val = (bch_type & ECC_BCH_LEVEL_MASK) | (ELM_ECC_SIZE << 16);
+ elm_write_reg(info, ELM_LOCATION_CONFIG, reg_val);
+ info->bch_type = bch_type;
+ info->ecc_steps = ecc_steps;
+ info->ecc_syndrome_size = ecc_syndrome_size;
+
+ return 0;
+}
+EXPORT_SYMBOL(elm_config);
+
+/**
+ * elm_configure_page_mode - Enable/Disable page mode
+ * @info: elm info
+ * @index: index number of syndrome fragment vector
+ * @enable: enable/disable flag for page mode
+ *
+ * Enable page mode for syndrome fragment index
+ */
+static void elm_configure_page_mode(struct elm_info *info, int index,
+ bool enable)
+{
+ u32 reg_val;
+
+ reg_val = elm_read_reg(info, ELM_PAGE_CTRL);
+ if (enable)
+ reg_val |= BIT(index); /* enable page mode */
+ else
+ reg_val &= ~BIT(index); /* disable page mode */
+
+ elm_write_reg(info, ELM_PAGE_CTRL, reg_val);
+}
+
+/**
+ * elm_load_syndrome - Load ELM syndrome reg
+ * @info: elm info
+ * @err_vec: elm error vectors
+ * @ecc: buffer with calculated ecc
+ *
+ * Load syndrome fragment registers with calculated ecc in reverse order.
+ */
+static void elm_load_syndrome(struct elm_info *info,
+ struct elm_errorvec *err_vec, u8 *ecc)
+{
+ int i, offset;
+ u32 val;
+
+ for (i = 0; i < info->ecc_steps; i++) {
+
+ /* Check error reported */
+ if (err_vec[i].error_reported) {
+ elm_configure_page_mode(info, i, true);
+ offset = ELM_SYNDROME_FRAGMENT_0 +
+ SYNDROME_FRAGMENT_REG_SIZE * i;
+ switch (info->bch_type) {
+ case BCH8_ECC:
+ /* syndrome fragment 0 = ecc[9-12B] */
+ val = cpu_to_be32(*(u32 *) &ecc[9]);
+ elm_write_reg(info, offset, val);
+
+ /* syndrome fragment 1 = ecc[5-8B] */
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[5]);
+ elm_write_reg(info, offset, val);
+
+ /* syndrome fragment 2 = ecc[1-4B] */
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[1]);
+ elm_write_reg(info, offset, val);
+
+ /* syndrome fragment 3 = ecc[0B] */
+ offset += 4;
+ val = ecc[0];
+ elm_write_reg(info, offset, val);
+ break;
+ case BCH4_ECC:
+ /* syndrome fragment 0 = ecc[20-52b] bits */
+ val = (cpu_to_be32(*(u32 *) &ecc[3]) >> 4) |
+ ((ecc[2] & 0xf) << 28);
+ elm_write_reg(info, offset, val);
+
+ /* syndrome fragment 1 = ecc[0-20b] bits */
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[0]) >> 12;
+ elm_write_reg(info, offset, val);
+ break;
+ case BCH16_ECC:
+ val = cpu_to_be32(*(u32 *) &ecc[22]);
+ elm_write_reg(info, offset, val);
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[18]);
+ elm_write_reg(info, offset, val);
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[14]);
+ elm_write_reg(info, offset, val);
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[10]);
+ elm_write_reg(info, offset, val);
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[6]);
+ elm_write_reg(info, offset, val);
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[2]);
+ elm_write_reg(info, offset, val);
+ offset += 4;
+ val = cpu_to_be32(*(u32 *) &ecc[0]) >> 16;
+ elm_write_reg(info, offset, val);
+ break;
+ default:
+ pr_err("invalid config bch_type\n");
+ }
+ }
+
+ /* Update ecc pointer with ecc byte size */
+ ecc += info->ecc_syndrome_size;
+ }
+}
+
+/**
+ * elm_start_processing - start elm syndrome processing
+ * @info: elm info
+ * @err_vec: elm error vectors
+ *
+ * Set syndrome valid bit for syndrome fragment registers for which
+ * elm syndrome fragment registers are loaded. This enables elm module
+ * to start processing syndrome vectors.
+ */
+static void elm_start_processing(struct elm_info *info,
+ struct elm_errorvec *err_vec)
+{
+ int i, offset;
+ u32 reg_val;
+
+ /*
+ * Set syndrome vector valid, so that ELM module
+ * will process it for vectors error is reported
+ */
+ for (i = 0; i < info->ecc_steps; i++) {
+ if (err_vec[i].error_reported) {
+ offset = ELM_SYNDROME_FRAGMENT_6 +
+ SYNDROME_FRAGMENT_REG_SIZE * i;
+ reg_val = elm_read_reg(info, offset);
+ reg_val |= ELM_SYNDROME_VALID;
+ elm_write_reg(info, offset, reg_val);
+ }
+ }
+}
+
+/**
+ * elm_error_correction - locate correctable error position
+ * @info: elm info
+ * @err_vec: elm error vectors
+ *
+ * On completion of processing by elm module, error location status
+ * register updated with correctable/uncorrectable error information.
+ * In case of correctable errors, number of errors located from
+ * elm location status register & read the positions from
+ * elm error location register.
+ */
+static void elm_error_correction(struct elm_info *info,
+ struct elm_errorvec *err_vec)
+{
+ int i, j, errors = 0;
+ int offset;
+ u32 reg_val;
+
+ for (i = 0; i < info->ecc_steps; i++) {
+
+ /* Check error reported */
+ if (err_vec[i].error_reported) {
+ offset = ELM_LOCATION_STATUS + ERROR_LOCATION_SIZE * i;
+ reg_val = elm_read_reg(info, offset);
+
+ /* Check correctable error or not */
+ if (reg_val & ECC_CORRECTABLE_MASK) {
+ offset = ELM_ERROR_LOCATION_0 +
+ ERROR_LOCATION_SIZE * i;
+
+ /* Read count of correctable errors */
+ err_vec[i].error_count = reg_val &
+ ECC_NB_ERRORS_MASK;
+
+ /* Update the error locations in error vector */
+ for (j = 0; j < err_vec[i].error_count; j++) {
+
+ reg_val = elm_read_reg(info, offset);
+ err_vec[i].error_loc[j] = reg_val &
+ ECC_ERROR_LOCATION_MASK;
+
+ /* Update error location register */
+ offset += 4;
+ }
+
+ errors += err_vec[i].error_count;
+ } else {
+ err_vec[i].error_uncorrectable = true;
+ }
+
+ /* Clearing interrupts for processed error vectors */
+ elm_write_reg(info, ELM_IRQSTATUS, BIT(i));
+
+ /* Disable page mode */
+ elm_configure_page_mode(info, i, false);
+ }
+ }
+}
+
+/**
+ * elm_decode_bch_error_page - Locate error position
+ * @dev: device pointer
+ * @ecc_calc: calculated ECC bytes from GPMC
+ * @err_vec: elm error vectors
+ *
+ * Called with one or more error reported vectors & vectors with
+ * error reported is updated in err_vec[].error_reported
+ */
+void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
+ struct elm_errorvec *err_vec)
+{
+ struct elm_info *info = dev_get_drvdata(dev);
+ u32 reg_val;
+
+ /* Enable page mode interrupt */
+ reg_val = elm_read_reg(info, ELM_IRQSTATUS);
+ elm_write_reg(info, ELM_IRQSTATUS, reg_val & INTR_STATUS_PAGE_VALID);
+ elm_write_reg(info, ELM_IRQENABLE, INTR_EN_PAGE_MASK);
+
+ /* Load valid ecc byte to syndrome fragment register */
+ elm_load_syndrome(info, err_vec, ecc_calc);
+
+ /* Enable syndrome processing for which syndrome fragment is updated */
+ elm_start_processing(info, err_vec);
+
+ /* Wait for ELM module to finish locating error correction */
+ wait_for_completion(&info->elm_completion);
+
+ /* Disable page mode interrupt */
+ reg_val = elm_read_reg(info, ELM_IRQENABLE);
+ elm_write_reg(info, ELM_IRQENABLE, reg_val & ~INTR_EN_PAGE_MASK);
+ elm_error_correction(info, err_vec);
+}
+EXPORT_SYMBOL(elm_decode_bch_error_page);
+
+static irqreturn_t elm_isr(int this_irq, void *dev_id)
+{
+ u32 reg_val;
+ struct elm_info *info = dev_id;
+
+ reg_val = elm_read_reg(info, ELM_IRQSTATUS);
+
+ /* All error vectors processed */
+ if (reg_val & INTR_STATUS_PAGE_VALID) {
+ elm_write_reg(info, ELM_IRQSTATUS,
+ reg_val & INTR_STATUS_PAGE_VALID);
+ complete(&info->elm_completion);
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_NONE;
+}
+
+static int elm_probe(struct platform_device *pdev)
+{
+ int ret = 0;
+ struct resource *res, *irq;
+ struct elm_info *info;
+
+ info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->dev = &pdev->dev;
+
+ irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!irq) {
+ dev_err(&pdev->dev, "no irq resource defined\n");
+ return -ENODEV;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ info->elm_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(info->elm_base))
+ return PTR_ERR(info->elm_base);
+
+ ret = devm_request_irq(&pdev->dev, irq->start, elm_isr, 0,
+ pdev->name, info);
+ if (ret) {
+ dev_err(&pdev->dev, "failure requesting irq %i\n", irq->start);
+ return ret;
+ }
+
+ pm_runtime_enable(&pdev->dev);
+ if (pm_runtime_get_sync(&pdev->dev) < 0) {
+ ret = -EINVAL;
+ pm_runtime_disable(&pdev->dev);
+ dev_err(&pdev->dev, "can't enable clock\n");
+ return ret;
+ }
+
+ init_completion(&info->elm_completion);
+ INIT_LIST_HEAD(&info->list);
+ list_add(&info->list, &elm_devices);
+ platform_set_drvdata(pdev, info);
+ return ret;
+}
+
+static int elm_remove(struct platform_device *pdev)
+{
+ pm_runtime_put_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+/**
+ * elm_context_save
+ * saves ELM configurations to preserve them across Hardware powered-down
+ */
+static int elm_context_save(struct elm_info *info)
+{
+ struct elm_registers *regs = &info->elm_regs;
+ enum bch_ecc bch_type = info->bch_type;
+ u32 offset = 0, i;
+
+ regs->elm_irqenable = elm_read_reg(info, ELM_IRQENABLE);
+ regs->elm_sysconfig = elm_read_reg(info, ELM_SYSCONFIG);
+ regs->elm_location_config = elm_read_reg(info, ELM_LOCATION_CONFIG);
+ regs->elm_page_ctrl = elm_read_reg(info, ELM_PAGE_CTRL);
+ for (i = 0; i < ERROR_VECTOR_MAX; i++) {
+ offset = i * SYNDROME_FRAGMENT_REG_SIZE;
+ switch (bch_type) {
+ case BCH16_ECC:
+ regs->elm_syndrome_fragment_6[i] = elm_read_reg(info,
+ ELM_SYNDROME_FRAGMENT_6 + offset);
+ regs->elm_syndrome_fragment_5[i] = elm_read_reg(info,
+ ELM_SYNDROME_FRAGMENT_5 + offset);
+ regs->elm_syndrome_fragment_4[i] = elm_read_reg(info,
+ ELM_SYNDROME_FRAGMENT_4 + offset);
+ case BCH8_ECC:
+ regs->elm_syndrome_fragment_3[i] = elm_read_reg(info,
+ ELM_SYNDROME_FRAGMENT_3 + offset);
+ regs->elm_syndrome_fragment_2[i] = elm_read_reg(info,
+ ELM_SYNDROME_FRAGMENT_2 + offset);
+ case BCH4_ECC:
+ regs->elm_syndrome_fragment_1[i] = elm_read_reg(info,
+ ELM_SYNDROME_FRAGMENT_1 + offset);
+ regs->elm_syndrome_fragment_0[i] = elm_read_reg(info,
+ ELM_SYNDROME_FRAGMENT_0 + offset);
+ break;
+ default:
+ return -EINVAL;
+ }
+ /* ELM SYNDROME_VALID bit in SYNDROME_FRAGMENT_6[] needs
+ * to be saved for all BCH schemes*/
+ regs->elm_syndrome_fragment_6[i] = elm_read_reg(info,
+ ELM_SYNDROME_FRAGMENT_6 + offset);
+ }
+ return 0;
+}
+
+/**
+ * elm_context_restore
+ * writes configurations saved duing power-down back into ELM registers
+ */
+static int elm_context_restore(struct elm_info *info)
+{
+ struct elm_registers *regs = &info->elm_regs;
+ enum bch_ecc bch_type = info->bch_type;
+ u32 offset = 0, i;
+
+ elm_write_reg(info, ELM_IRQENABLE, regs->elm_irqenable);
+ elm_write_reg(info, ELM_SYSCONFIG, regs->elm_sysconfig);
+ elm_write_reg(info, ELM_LOCATION_CONFIG, regs->elm_location_config);
+ elm_write_reg(info, ELM_PAGE_CTRL, regs->elm_page_ctrl);
+ for (i = 0; i < ERROR_VECTOR_MAX; i++) {
+ offset = i * SYNDROME_FRAGMENT_REG_SIZE;
+ switch (bch_type) {
+ case BCH16_ECC:
+ elm_write_reg(info, ELM_SYNDROME_FRAGMENT_6 + offset,
+ regs->elm_syndrome_fragment_6[i]);
+ elm_write_reg(info, ELM_SYNDROME_FRAGMENT_5 + offset,
+ regs->elm_syndrome_fragment_5[i]);
+ elm_write_reg(info, ELM_SYNDROME_FRAGMENT_4 + offset,
+ regs->elm_syndrome_fragment_4[i]);
+ case BCH8_ECC:
+ elm_write_reg(info, ELM_SYNDROME_FRAGMENT_3 + offset,
+ regs->elm_syndrome_fragment_3[i]);
+ elm_write_reg(info, ELM_SYNDROME_FRAGMENT_2 + offset,
+ regs->elm_syndrome_fragment_2[i]);
+ case BCH4_ECC:
+ elm_write_reg(info, ELM_SYNDROME_FRAGMENT_1 + offset,
+ regs->elm_syndrome_fragment_1[i]);
+ elm_write_reg(info, ELM_SYNDROME_FRAGMENT_0 + offset,
+ regs->elm_syndrome_fragment_0[i]);
+ break;
+ default:
+ return -EINVAL;
+ }
+ /* ELM_SYNDROME_VALID bit to be set in last to trigger FSM */
+ elm_write_reg(info, ELM_SYNDROME_FRAGMENT_6 + offset,
+ regs->elm_syndrome_fragment_6[i] &
+ ELM_SYNDROME_VALID);
+ }
+ return 0;
+}
+
+static int elm_suspend(struct device *dev)
+{
+ struct elm_info *info = dev_get_drvdata(dev);
+ elm_context_save(info);
+ pm_runtime_put_sync(dev);
+ return 0;
+}
+
+static int elm_resume(struct device *dev)
+{
+ struct elm_info *info = dev_get_drvdata(dev);
+ pm_runtime_get_sync(dev);
+ elm_context_restore(info);
+ return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(elm_pm_ops, elm_suspend, elm_resume);
+
+#ifdef CONFIG_OF
+static const struct of_device_id elm_of_match[] = {
+ { .compatible = "ti,am3352-elm" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, elm_of_match);
+#endif
+
+static struct platform_driver elm_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(elm_of_match),
+ .pm = &elm_pm_ops,
+ },
+ .probe = elm_probe,
+ .remove = elm_remove,
+};
+
+module_platform_driver(elm_driver);
+
+MODULE_DESCRIPTION("ELM driver for BCH error correction");
+MODULE_AUTHOR("Texas Instruments");
+MODULE_ALIAS("platform: elm");
+MODULE_LICENSE("GPL v2");
uint8_t ecc2[3];
uint8_t lba_copy2[2];
uint8_t ecc1[3];
-} __attribute__((packed));
+} __packed;
/* one sector is always 512 bytes, but it can consist of two nand pages */
{
struct sm_ftl *ftl = dev->priv;
struct ftl_zone *zone;
- int error, zone_num, block, boffset;
+ int error = 0, zone_num, block, boffset;
BUG_ON(ftl->readonly);
sm_break_offset(ftl, sec_no << 9, &zone_num, &block, &boffset);
if MTD_SPI_NOR
+config MTD_SPI_NOR_USE_4K_SECTORS
+ bool "Use small 4096 B erase sectors"
+ default y
+ help
+ Many flash memories support erasing small (4096 B) sectors. Depending
+ on the usage this feature may provide performance gain in comparison
+ to erasing whole blocks (32/64 KiB).
+ Changing a small part of the flash's contents is usually faster with
+ small sectors. On the other hand erasing should be faster when using
+ 64 KiB block instead of 16 × 4 KiB sectors.
+
+ Please note that some tools/drivers/filesystems may not work with
+ 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
+
config SPI_FSL_QUADSPI
tristate "Freescale Quad SPI controller"
depends on ARCH_MXC
{ "m25px32-s0", INFO(0x207316, 0, 64 * 1024, 64, SECT_4K) },
{ "m25px32-s1", INFO(0x206316, 0, 64 * 1024, 64, SECT_4K) },
{ "m25px64", INFO(0x207117, 0, 64 * 1024, 128, 0) },
+ { "m25px80", INFO(0x207114, 0, 64 * 1024, 16, 0) },
/* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
{ "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) },
{ "w25q32dw", INFO(0xef6016, 0, 64 * 1024, 64, SECT_4K) },
{ "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
{ "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
- { "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
{ "w25q80", INFO(0xef5014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024, 16, SECT_4K) },
{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
return ERR_PTR(-ENODEV);
}
-static const struct spi_device_id *jedec_probe(struct spi_nor *nor)
-{
- return nor->read_id(nor);
-}
-
static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
enum read_mode mode)
{
struct flash_info *info;
- struct flash_platform_data *data;
struct device *dev = nor->dev;
struct mtd_info *mtd = nor->mtd;
struct device_node *np = dev->of_node;
if (ret)
return ret;
- /* Platform data helps sort out which chip type we have, as
- * well as how this board partitions it. If we don't have
- * a chip ID, try the JEDEC id commands; they'll work for most
- * newer chips, even if we don't recognize the particular chip.
- */
- data = dev_get_platdata(dev);
- if (data && data->type) {
- const struct spi_device_id *plat_id;
-
- for (i = 0; i < ARRAY_SIZE(spi_nor_ids) - 1; i++) {
- plat_id = &spi_nor_ids[i];
- if (strcmp(data->type, plat_id->name))
- continue;
- break;
- }
-
- if (i < ARRAY_SIZE(spi_nor_ids) - 1)
- id = plat_id;
- else
- dev_warn(dev, "unrecognized id %s\n", data->type);
- }
-
info = (void *)id->driver_data;
if (info->jedec_id) {
const struct spi_device_id *jid;
- jid = jedec_probe(nor);
+ jid = nor->read_id(nor);
if (IS_ERR(jid)) {
return PTR_ERR(jid);
} else if (jid != id) {
write_sr(nor, 0);
}
- if (data && data->name)
- mtd->name = data->name;
- else
+ if (!mtd->name)
mtd->name = dev_name(dev);
-
mtd->type = MTD_NORFLASH;
mtd->writesize = 1;
mtd->flags = MTD_CAP_NORFLASH;
nor->wait_till_ready == spi_nor_wait_till_ready)
nor->wait_till_ready = spi_nor_wait_till_fsr_ready;
+#ifdef CONFIG_MTD_SPI_NOR_USE_4K_SECTORS
/* prefer "small sector" erase if possible */
if (info->flags & SECT_4K) {
nor->erase_opcode = SPINOR_OP_BE_4K;
} else if (info->flags & SECT_4K_PMC) {
nor->erase_opcode = SPINOR_OP_BE_4K_PMC;
mtd->erasesize = 4096;
- } else {
+ } else
+#endif
+ {
nor->erase_opcode = SPINOR_OP_SE;
mtd->erasesize = info->sector_size;
}
{
int err;
struct erase_info ei;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
memset(&ei, 0, sizeof(struct erase_info));
ei.mtd = mtd;
static int is_block_bad(struct mtd_info *mtd, unsigned int ebnum)
{
int ret;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
ret = mtd_block_isbad(mtd, addr);
if (ret)
pr_info("Device uses %d subpages of %d bytes\n", subcount, subsize);
- offset = page_offset * mtd->writesize;
+ offset = (loff_t)page_offset * mtd->writesize;
eraseblock = mtd_div_by_eb(offset, mtd);
pr_info("Using page=%u, offset=%llu, eraseblock=%u\n",
int i;
struct mtd_oob_ops ops;
int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
prandom_bytes_state(&rnd_state, writebuf, use_len_max * pgcnt);
for (i = 0; i < pgcnt; ++i, addr += mtd->writesize) {
{
struct mtd_oob_ops ops;
int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
size_t len = mtd->ecclayout->oobavail * pgcnt;
prandom_bytes_state(&rnd_state, writebuf, len);
size_t sz = mtd->ecclayout->oobavail;
if (bbt[i] || bbt[i + 1])
continue;
- addr = (i + 1) * mtd->erasesize - mtd->writesize;
+ addr = (loff_t)(i + 1) * mtd->erasesize - mtd->writesize;
prandom_bytes_state(&rnd_state, writebuf, sz * cnt);
for (pg = 0; pg < cnt; ++pg) {
ops.mode = MTD_OPS_AUTO_OOB;
continue;
prandom_bytes_state(&rnd_state, writebuf,
mtd->ecclayout->oobavail * 2);
- addr = (i + 1) * mtd->erasesize - mtd->writesize;
+ addr = (loff_t)(i + 1) * mtd->erasesize - mtd->writesize;
ops.mode = MTD_OPS_AUTO_OOB;
ops.len = 0;
ops.retlen = 0;
static int write_eraseblock(int ebnum)
{
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
prandom_bytes_state(&rnd_state, writebuf, mtd->erasesize);
cond_resched();
uint32_t j;
int err = 0, i;
loff_t addr0, addrn;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
addr0 = 0;
for (i = 0; i < ebcnt && bbt[i]; ++i)
static int read_eraseblock_by_page(int ebnum)
{
int i, ret, err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
void *buf = iobuf;
void *oobbuf = iobuf1;
{
int err;
struct erase_info ei;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
memset(&ei, 0, sizeof(struct erase_info));
ei.mtd = mtd;
static int write_eraseblock(int ebnum)
{
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
return mtdtest_write(mtd, addr, mtd->erasesize, iobuf);
}
static int write_eraseblock_by_page(int ebnum)
{
int i, err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
void *buf = iobuf;
for (i = 0; i < pgcnt; i++) {
{
size_t sz = pgsize * 2;
int i, n = pgcnt / 2, err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
void *buf = iobuf;
for (i = 0; i < n; i++) {
static int read_eraseblock(int ebnum)
{
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
return mtdtest_read(mtd, addr, mtd->erasesize, iobuf);
}
static int read_eraseblock_by_page(int ebnum)
{
int i, err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
void *buf = iobuf;
for (i = 0; i < pgcnt; i++) {
{
size_t sz = pgsize * 2;
int i, n = pgcnt / 2, err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
void *buf = iobuf;
for (i = 0; i < n; i++) {
{
size_t written;
int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
prandom_bytes_state(&rnd_state, writebuf, subpgsize);
err = mtd_write(mtd, addr, subpgsize, &written, writebuf);
{
size_t written;
int err = 0, k;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
for (k = 1; k < 33; ++k) {
if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
{
size_t read;
int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
prandom_bytes_state(&rnd_state, writebuf, subpgsize);
clear_data(readbuf, subpgsize);
{
size_t read;
int err = 0, k;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
for (k = 1; k < 33; ++k) {
if (addr + (subpgsize * k) > (ebnum + 1) * mtd->erasesize)
uint32_t j;
size_t read;
int err = 0;
- loff_t addr = ebnum * mtd->erasesize;
+ loff_t addr = (loff_t)ebnum * mtd->erasesize;
memset(writebuf, 0xff, subpgsize);
for (j = 0; j < mtd->erasesize / subpgsize; ++j) {
uint16_t MaxBufWriteSize;
uint8_t NumEraseRegions;
uint32_t EraseRegionInfo[0]; /* Not host ordered */
-} __attribute__((packed));
+} __packed;
/* Extended Query Structure for both PRI and ALT */
uint8_t pri[3];
uint8_t MajorVersion;
uint8_t MinorVersion;
-} __attribute__((packed));
+} __packed;
/* Vendor-Specific PRI for Intel/Sharp Extended Command Set (0x0001) */
uint8_t FactProtRegSize;
uint8_t UserProtRegSize;
uint8_t extra[0];
-} __attribute__((packed));
+} __packed;
struct cfi_intelext_otpinfo {
uint32_t ProtRegAddr;
uint8_t FactProtRegSize;
uint16_t UserGroups;
uint8_t UserProtRegSize;
-} __attribute__((packed));
+} __packed;
struct cfi_intelext_blockinfo {
uint16_t NumIdentBlocks;
uint16_t MinBlockEraseCycles;
uint8_t BitsPerCell;
uint8_t BlockCap;
-} __attribute__((packed));
+} __packed;
struct cfi_intelext_regioninfo {
uint16_t NumIdentPartitions;
uint8_t NumOpAllowedSimEraMode;
uint8_t NumBlockTypes;
struct cfi_intelext_blockinfo BlockTypes[1];
-} __attribute__((packed));
+} __packed;
struct cfi_intelext_programming_regioninfo {
uint8_t ProgRegShift;
uint8_t Reserved2;
uint8_t ControlInvalid;
uint8_t Reserved3;
-} __attribute__((packed));
+} __packed;
/* Vendor-Specific PRI for AMD/Fujitsu Extended Command Set (0x0002) */
uint8_t VppMin;
uint8_t VppMax;
uint8_t TopBottom;
-} __attribute__((packed));
+} __packed;
/* Vendor-Specific PRI for Atmel chips (command set 0x0002) */
uint8_t BottomBoot;
uint8_t BurstMode;
uint8_t PageMode;
-} __attribute__((packed));
+} __packed;
struct cfi_pri_query {
uint8_t NumFields;
uint32_t ProtField[1]; /* Not host ordered */
-} __attribute__((packed));
+} __packed;
struct cfi_bri_query {
uint8_t PageModeReadCap;
uint8_t NumFields;
uint32_t ConfField[1]; /* Not host ordered */
-} __attribute__((packed));
+} __packed;
#define P_ID_NONE 0x0000
#define P_ID_INTEL_EXT 0x0001
* @ecc_step_ds: [INTERN] ECC step required by the @ecc_strength_ds,
* also from the datasheet. It is the recommended ECC step
* size, if known; if unknown, set to zero.
+ * @onfi_timing_mode_default: [INTERN] default ONFI timing mode. This field is
+ * either deduced from the datasheet if the NAND
+ * chip is not ONFI compliant or set to 0 if it is
+ * (an ONFI chip is always configured in mode 0
+ * after a NAND reset)
* @numchips: [INTERN] number of physical chips
* @chipsize: [INTERN] the size of one chip for multichip arrays
* @pagemask: [INTERN] page number mask = number of (pages / chip) - 1
uint8_t bits_per_cell;
uint16_t ecc_strength_ds;
uint16_t ecc_step_ds;
+ int onfi_timing_mode_default;
int badblockpos;
int badblockbits;
* @options: stores various chip bit options
* @id_len: The valid length of the @id.
* @oobsize: OOB size
+ * @ecc: ECC correctability and step information from the datasheet.
* @ecc.strength_ds: The ECC correctability from the datasheet, same as the
* @ecc_strength_ds in nand_chip{}.
* @ecc.step_ds: The ECC step required by the @ecc.strength_ds, same as the
* @ecc_step_ds in nand_chip{}, also from the datasheet.
* For example, the "4bit ECC for each 512Byte" can be set with
* NAND_ECC_INFO(4, 512).
+ * @onfi_timing_mode_default: the default ONFI timing mode entered after a NAND
+ * reset. Should be deduced from timings described
+ * in the datasheet.
+ *
*/
struct nand_flash_dev {
char *name;
uint16_t strength_ds;
uint16_t step_ds;
} ecc;
+ int onfi_timing_mode_default;
};
/**
int error_loc[16];
};
+#if IS_ENABLED(CONFIG_MTD_NAND_OMAP_BCH)
void elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
struct elm_errorvec *err_vec);
int elm_config(struct device *dev, enum bch_ecc bch_type,
int ecc_steps, int ecc_step_size, int ecc_syndrome_size);
+#else
+static inline void
+elm_decode_bch_error_page(struct device *dev, u8 *ecc_calc,
+ struct elm_errorvec *err_vec)
+{
+}
+
+static inline int elm_config(struct device *dev, enum bch_ecc bch_type,
+ int ecc_steps, int ecc_step_size,
+ int ecc_syndrome_size)
+{
+ return -ENOSYS;
+}
+#endif /* CONFIG_MTD_NAND_ECC_BCH */
+
#endif /* __ELM_H */
struct mtd_partition *parts;
int nr_parts;
bool dev_ready;
+ bool flash_bbt;
enum nand_io xfer_type;
int devsize;
enum omap_ecc ecc_opt;
projects / linux-2.6-block.git / commitdiff