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MTD merge for 3.4 

Artem's cleanup of the MTD API continues apace.
 Fixes and improvements for ST FSMC and SuperH FLCTL NAND, amongst others.
 More work on DiskOnChip G3, new driver for DiskOnChip G4.
 Clean up debug/warning printks in JFFS2 to use pr_<level>.
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Merge tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6

Pull MTD changes from David Woodhouse:
 - Artem's cleanup of the MTD API continues apace.
 - Fixes and improvements for ST FSMC and SuperH FLCTL NAND, amongst
   others.
 - More work on DiskOnChip G3, new driver for DiskOnChip G4.
 - Clean up debug/warning printks in JFFS2 to use pr_<level>.

Fix up various trivial conflicts, largely due to changes in calling
conventions for things like dmaengine_prep_slave_sg() (new inline
wrapper to hide new parameter, clashing with rewrite of previously last
parameter that used to be an 'append' flag, and is now a bitmap of
'unsigned long flags').

(Also some header file fallout - like so many merges this merge window -
and silly conflicts with sparse fixes)

* tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6: (120 commits)
  mtd: docg3 add protection against concurrency
  mtd: docg3 refactor cascade floors structure
  mtd: docg3 increase write/erase timeout
  mtd: docg3 fix inbound calculations
  mtd: nand: gpmi: fix function annotations
  mtd: phram: fix section mismatch for phram_setup
  mtd: unify initialization of erase_info->fail_addr
  mtd: support ONFI multi lun NAND
  mtd: sm_ftl: fix typo in major number.
  mtd: add device-tree support to spear_smi
  mtd: spear_smi: Remove default partition information from driver
  mtd: Add device-tree support to fsmc_nand
  mtd: fix section mismatch for doc_probe_device
  mtd: nand/fsmc: Remove sparse warnings and errors
  mtd: nand/fsmc: Add DMA support
  mtd: nand/fsmc: Access the NAND device word by word whenever possible
  mtd: nand/fsmc: Use dev_err to report error scenario
  mtd: nand/fsmc: Use devm routines
  mtd: nand/fsmc: Modify fsmc driver to accept nand timing parameters via platform
  mtd: fsmc_nand: add pm callbacks to support hibernation
  ...
hifive-unleashed-5.1
Linus Torvalds 2012-03-30 17:31:56 -07:00
parent c39e8ede28 7b0e67f604
commit 623ff7739e
152 changed files with 6063 additions and 2493 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
Documentation/devicetree/bindings/mtd/fsmc-nand.txt 100644
View File

@ -0,0 +1,33 @@
* FSMC NAND
Required properties:
- compatible : "st,spear600-fsmc-nand"
- reg : Address range of the mtd chip
- reg-names: Should contain the reg names "fsmc_regs" and "nand_data"
- st,ale-off : Chip specific offset to ALE
- st,cle-off : Chip specific offset to CLE
Optional properties:
- bank-width : Width (in bytes) of the device. If not present, the width
defaults to 1 byte
- nand-skip-bbtscan: Indicates the the BBT scanning should be skipped
Example:
fsmc: flash@d1800000 {
compatible = "st,spear600-fsmc-nand";
#address-cells = <1>;
#size-cells = <1>;
reg = <0xd1800000 0x1000 /* FSMC Register */
0xd2000000 0x4000>; /* NAND Base */
reg-names = "fsmc_regs", "nand_data";
st,ale-off = <0x20000>;
st,cle-off = <0x10000>;
bank-width = <1>;
nand-skip-bbtscan;
partition@0 {
...
};
};

31
Documentation/devicetree/bindings/mtd/spear_smi.txt 100644
View File

@ -0,0 +1,31 @@
* SPEAr SMI
Required properties:
- compatible : "st,spear600-smi"
- reg : Address range of the mtd chip
- #address-cells, #size-cells : Must be present if the device has sub-nodes
representing partitions.
- interrupt-parent: Should be the phandle for the interrupt controller
that services interrupts for this device
- interrupts: Should contain the STMMAC interrupts
- clock-rate : Functional clock rate of SMI in Hz
Optional properties:
- st,smi-fast-mode : Flash supports read in fast mode
Example:
smi: flash@fc000000 {
compatible = "st,spear600-smi";
#address-cells = <1>;
#size-cells = <1>;
reg = <0xfc000000 0x1000>;
interrupt-parent = <&vic1>;
interrupts = <12>;
clock-rate = <50000000>; /* 50MHz */
flash@f8000000 {
st,smi-fast-mode;
...
};
};

20
arch/arm/mach-omap1/flash.c
View File

@ -17,20 +17,12 @@
void omap1_set_vpp(struct platform_device *pdev, int enable)
{
static int count;
u32 l;
if (enable) {
if (count++ == 0) {
l = omap_readl(EMIFS_CONFIG);
l |= OMAP_EMIFS_CONFIG_WP;
omap_writel(l, EMIFS_CONFIG);
}
} else {
if (count && (--count == 0)) {
l = omap_readl(EMIFS_CONFIG);
l &= ~OMAP_EMIFS_CONFIG_WP;
omap_writel(l, EMIFS_CONFIG);
}
}
l = omap_readl(EMIFS_CONFIG);
if (enable)
l |= OMAP_EMIFS_CONFIG_WP;
else
l &= ~OMAP_EMIFS_CONFIG_WP;
omap_writel(l, EMIFS_CONFIG);
}

3
arch/arm/mach-s3c24xx/simtec-nor.c
View File

@ -35,9 +35,7 @@
static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
{
unsigned int val;
unsigned long flags;
local_irq_save(flags);
val = __raw_readb(BAST_VA_CTRL3);
printk(KERN_DEBUG "%s(%d)\n", __func__, vpp);
@ -48,7 +46,6 @@ static void simtec_nor_vpp(struct platform_device *pdev, int vpp)
val &= ~BAST_CPLD_CTRL3_ROMWEN;
__raw_writeb(val, BAST_VA_CTRL3);
local_irq_restore(flags);
}
static struct physmap_flash_data simtec_nor_pdata = {

71
arch/arm/mach-shmobile/board-mackerel.c
View File

@ -39,6 +39,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/sh_flctl.h>
#include <linux/pm_clock.h>
#include <linux/smsc911x.h>
#include <linux/sh_intc.h>
@ -956,6 +957,50 @@ static struct platform_device fsi_ak4643_device = {
},
};
/* FLCTL */
static struct mtd_partition nand_partition_info[] = {
{
.name = "system",
.offset = 0,
.size = 128 * 1024 * 1024,
},
{
.name = "userdata",
.offset = MTDPART_OFS_APPEND,
.size = 256 * 1024 * 1024,
},
{
.name = "cache",
.offset = MTDPART_OFS_APPEND,
.size = 128 * 1024 * 1024,
},
};
static struct resource nand_flash_resources[] = {
[0] = {
.start = 0xe6a30000,
.end = 0xe6a3009b,
.flags = IORESOURCE_MEM,
}
};
static struct sh_flctl_platform_data nand_flash_data = {
.parts = nand_partition_info,
.nr_parts = ARRAY_SIZE(nand_partition_info),
.flcmncr_val = CLK_16B_12L_4H | TYPESEL_SET
| SHBUSSEL | SEL_16BIT | SNAND_E,
.use_holden = 1,
};
static struct platform_device nand_flash_device = {
.name = "sh_flctl",
.resource = nand_flash_resources,
.num_resources = ARRAY_SIZE(nand_flash_resources),
.dev = {
.platform_data = &nand_flash_data,
},
};
/*
* The card detect pin of the top SD/MMC slot (CN7) is active low and is
* connected to GPIO A22 of SH7372 (GPIO_PORT41).
@ -1259,6 +1304,7 @@ static struct platform_device *mackerel_devices[] __initdata = {
&fsi_device,
&fsi_ak4643_device,
&fsi_hdmi_device,
&nand_flash_device,
&sdhi0_device,
#if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE)
&sdhi1_device,
@ -1488,6 +1534,30 @@ static void __init mackerel_init(void)
gpio_request(GPIO_FN_MMCCMD0, NULL);
gpio_request(GPIO_FN_MMCCLK0, NULL);
/* FLCTL */
gpio_request(GPIO_FN_D0_NAF0, NULL);
gpio_request(GPIO_FN_D1_NAF1, NULL);
gpio_request(GPIO_FN_D2_NAF2, NULL);
gpio_request(GPIO_FN_D3_NAF3, NULL);
gpio_request(GPIO_FN_D4_NAF4, NULL);
gpio_request(GPIO_FN_D5_NAF5, NULL);
gpio_request(GPIO_FN_D6_NAF6, NULL);
gpio_request(GPIO_FN_D7_NAF7, NULL);
gpio_request(GPIO_FN_D8_NAF8, NULL);
gpio_request(GPIO_FN_D9_NAF9, NULL);
gpio_request(GPIO_FN_D10_NAF10, NULL);
gpio_request(GPIO_FN_D11_NAF11, NULL);
gpio_request(GPIO_FN_D12_NAF12, NULL);
gpio_request(GPIO_FN_D13_NAF13, NULL);
gpio_request(GPIO_FN_D14_NAF14, NULL);
gpio_request(GPIO_FN_D15_NAF15, NULL);
gpio_request(GPIO_FN_FCE0, NULL);
gpio_request(GPIO_FN_WE0_FWE, NULL);
gpio_request(GPIO_FN_FRB, NULL);
gpio_request(GPIO_FN_A4_FOE, NULL);
gpio_request(GPIO_FN_A5_FCDE, NULL);
gpio_request(GPIO_FN_RD_FSC, NULL);
/* enable GPS module (GT-720F) */
gpio_request(GPIO_FN_SCIFA2_TXD1, NULL);
gpio_request(GPIO_FN_SCIFA2_RXD1, NULL);
@ -1532,6 +1602,7 @@ static void __init mackerel_init(void)
sh7372_add_device_to_domain(&sh7372_a4mp, &fsi_device);
sh7372_add_device_to_domain(&sh7372_a3sp, &usbhs0_device);
sh7372_add_device_to_domain(&sh7372_a3sp, &usbhs1_device);
sh7372_add_device_to_domain(&sh7372_a3sp, &nand_flash_device);
sh7372_add_device_to_domain(&sh7372_a3sp, &sh_mmcif_device);
sh7372_add_device_to_domain(&sh7372_a3sp, &sdhi0_device);
#if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE)

4
arch/arm/mach-shmobile/clock-sh7372.c
View File

@ -511,7 +511,7 @@ enum { MSTP001, MSTP000,
MSTP223,
MSTP218, MSTP217, MSTP216, MSTP214, MSTP208, MSTP207,
MSTP206, MSTP205, MSTP204, MSTP203, MSTP202, MSTP201, MSTP200,
MSTP328, MSTP323, MSTP322, MSTP314, MSTP313, MSTP312,
MSTP328, MSTP323, MSTP322, MSTP315, MSTP314, MSTP313, MSTP312,
MSTP423, MSTP415, MSTP413, MSTP411, MSTP410, MSTP407, MSTP406,
MSTP405, MSTP404, MSTP403, MSTP400,
MSTP_NR };
@ -553,6 +553,7 @@ static struct clk mstp_clks[MSTP_NR] = {
[MSTP328] = MSTP(&div6_clks[DIV6_SPU], SMSTPCR3, 28, 0), /* FSI2 */
[MSTP323] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR3, 23, 0), /* IIC1 */
[MSTP322] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR3, 22, 0), /* USB0 */
[MSTP315] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 15, 0), /* FLCTL*/
[MSTP314] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 14, 0), /* SDHI0 */
[MSTP313] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 13, 0), /* SDHI1 */
[MSTP312] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 12, 0), /* MMC */
@ -653,6 +654,7 @@ static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("r8a66597_hcd.0", &mstp_clks[MSTP322]), /* USB0 */
CLKDEV_DEV_ID("r8a66597_udc.0", &mstp_clks[MSTP322]), /* USB0 */
CLKDEV_DEV_ID("renesas_usbhs.0", &mstp_clks[MSTP322]), /* USB0 */
CLKDEV_DEV_ID("sh_flctl.0", &mstp_clks[MSTP315]), /* FLCTL */
CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), /* SDHI0 */
CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), /* SDHI1 */
CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP312]), /* MMC */

2
arch/arm/mach-u300/core.c
View File

@ -1544,6 +1544,8 @@ static struct fsmc_nand_platform_data nand_platform_data = {
.nr_partitions = ARRAY_SIZE(u300_partitions),
.options = NAND_SKIP_BBTSCAN,
.width = FSMC_NAND_BW8,
.ale_off = PLAT_NAND_ALE,
.cle_off = PLAT_NAND_CLE,
};
static struct platform_device nand_device = {

5
arch/arm/mach-u300/include/mach/u300-regs.h
View File

@ -24,6 +24,11 @@
/* NFIF */
#define U300_NAND_IF_PHYS_BASE 0x9f800000
/* ALE, CLE offset for FSMC NAND */
#define PLAT_NAND_CLE (1 << 16)
#define PLAT_NAND_ALE (1 << 17)
/* AHB Peripherals */
#define U300_AHB_PER_PHYS_BASE 0xa0000000
#define U300_AHB_PER_VIRT_BASE 0xff010000

2
arch/mips/cavium-octeon/flash_setup.c
View File

@ -60,7 +60,7 @@ static int __init flash_init(void)
if (mymtd) {
mymtd->owner = THIS_MODULE;
mtd_device_parse_register(mymtd, part_probe_types,
0, NULL, 0);
NULL, NULL, 0);
} else {
pr_err("Failed to register MTD device for flash\n");
}

34
drivers/dma/mxs-dma.c
View File

@ -22,10 +22,10 @@
#include <linux/platform_device.h>
#include <linux/dmaengine.h>
#include <linux/delay.h>
#include <linux/fsl/mxs-dma.h>
#include <asm/irq.h>
#include <mach/mxs.h>
#include <mach/dma.h>
#include <mach/common.h>
#include "dmaengine.h"
@ -337,10 +337,32 @@ static void mxs_dma_free_chan_resources(struct dma_chan *chan)
clk_disable_unprepare(mxs_dma->clk);
}
/*
* How to use the flags for ->device_prep_slave_sg() :
* [1] If there is only one DMA command in the DMA chain, the code should be:
* ......
* ->device_prep_slave_sg(DMA_CTRL_ACK);
* ......
* [2] If there are two DMA commands in the DMA chain, the code should be
* ......
* ->device_prep_slave_sg(0);
* ......
* ->device_prep_slave_sg(DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
* ......
* [3] If there are more than two DMA commands in the DMA chain, the code
* should be:
* ......
* ->device_prep_slave_sg(0); // First
* ......
* ->device_prep_slave_sg(DMA_PREP_INTERRUPT [| DMA_CTRL_ACK]);
* ......
* ->device_prep_slave_sg(DMA_PREP_INTERRUPT | DMA_CTRL_ACK); // Last
* ......
*/
static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
struct dma_chan *chan, struct scatterlist *sgl,
unsigned int sg_len, enum dma_transfer_direction direction,
unsigned long append, void *context)
unsigned long flags, void *context)
{
struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan);
struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
@ -348,6 +370,7 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
struct scatterlist *sg;
int i, j;
u32 *pio;
bool append = flags & DMA_PREP_INTERRUPT;
int idx = append ? mxs_chan->desc_count : 0;
if (mxs_chan->status == DMA_IN_PROGRESS && !append)
@ -374,7 +397,6 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
ccw->bits |= CCW_CHAIN;
ccw->bits &= ~CCW_IRQ;
ccw->bits &= ~CCW_DEC_SEM;
ccw->bits &= ~CCW_WAIT4END;
} else {
idx = 0;
}
@ -389,7 +411,8 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
ccw->bits = 0;
ccw->bits |= CCW_IRQ;
ccw->bits |= CCW_DEC_SEM;
ccw->bits |= CCW_WAIT4END;
if (flags & DMA_CTRL_ACK)
ccw->bits |= CCW_WAIT4END;
ccw->bits |= CCW_HALT_ON_TERM;
ccw->bits |= CCW_TERM_FLUSH;
ccw->bits |= BF_CCW(sg_len, PIO_NUM);
@ -420,7 +443,8 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
ccw->bits &= ~CCW_CHAIN;
ccw->bits |= CCW_IRQ;
ccw->bits |= CCW_DEC_SEM;
ccw->bits |= CCW_WAIT4END;
if (flags & DMA_CTRL_ACK)
ccw->bits |= CCW_WAIT4END;
}
}
}

12
drivers/mmc/host/mxs-mmc.c
View File

@ -38,10 +38,10 @@
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/module.h>
#include <linux/fsl/mxs-dma.h>
#include <mach/mxs.h>
#include <mach/common.h>
#include <mach/dma.h>
#include <mach/mmc.h>
#define DRIVER_NAME "mxs-mmc"
@ -305,7 +305,7 @@ static irqreturn_t mxs_mmc_irq_handler(int irq, void *dev_id)
}
static struct dma_async_tx_descriptor *mxs_mmc_prep_dma(
struct mxs_mmc_host *host, unsigned int append)
struct mxs_mmc_host *host, unsigned long flags)
{
struct dma_async_tx_descriptor *desc;
struct mmc_data *data = host->data;
@ -325,7 +325,7 @@ static struct dma_async_tx_descriptor *mxs_mmc_prep_dma(
}
desc = dmaengine_prep_slave_sg(host->dmach,
sgl, sg_len, host->slave_dirn, append);
sgl, sg_len, host->slave_dirn, flags);
if (desc) {
desc->callback = mxs_mmc_dma_irq_callback;
desc->callback_param = host;
@ -358,7 +358,7 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host)
host->ssp_pio_words[2] = cmd1;
host->dma_dir = DMA_NONE;
host->slave_dirn = DMA_TRANS_NONE;
desc = mxs_mmc_prep_dma(host, 0);
desc = mxs_mmc_prep_dma(host, DMA_CTRL_ACK);
if (!desc)
goto out;
@ -398,7 +398,7 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host)
host->ssp_pio_words[2] = cmd1;
host->dma_dir = DMA_NONE;
host->slave_dirn = DMA_TRANS_NONE;
desc = mxs_mmc_prep_dma(host, 0);
desc = mxs_mmc_prep_dma(host, DMA_CTRL_ACK);
if (!desc)
goto out;
@ -526,7 +526,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host)
host->data = data;
host->dma_dir = dma_data_dir;
host->slave_dirn = slave_dirn;
desc = mxs_mmc_prep_dma(host, 1);
desc = mxs_mmc_prep_dma(host, DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc)
goto out;

3
drivers/mtd/Kconfig
View File

@ -304,9 +304,6 @@ config MTD_OOPS
buffer in a flash partition where it can be read back at some
later point.
To use, add console=ttyMTDx to the kernel command line,
where x is the MTD device number to use.
config MTD_SWAP
tristate "Swap on MTD device support"
depends on MTD && SWAP

83
drivers/mtd/chips/cfi_cmdset_0001.c
View File

@ -87,7 +87,7 @@ static int cfi_intelext_partition_fixup(struct mtd_info *, struct cfi_private **
static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys);
static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
static int cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long adr, int mode);
static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr, int mode);
@ -262,9 +262,9 @@ static void fixup_st_m28w320cb(struct mtd_info *mtd)
static void fixup_use_point(struct mtd_info *mtd)
{
struct map_info *map = mtd->priv;
if (!mtd->point && map_is_linear(map)) {
mtd->point = cfi_intelext_point;
mtd->unpoint = cfi_intelext_unpoint;
if (!mtd->_point && map_is_linear(map)) {
mtd->_point = cfi_intelext_point;
mtd->_unpoint = cfi_intelext_unpoint;
}
}
@ -274,8 +274,8 @@ static void fixup_use_write_buffers(struct mtd_info *mtd)
struct cfi_private *cfi = map->fldrv_priv;
if (cfi->cfiq->BufWriteTimeoutTyp) {
printk(KERN_INFO "Using buffer write method\n" );
mtd->write = cfi_intelext_write_buffers;
mtd->writev = cfi_intelext_writev;
mtd->_write = cfi_intelext_write_buffers;
mtd->_writev = cfi_intelext_writev;
}
}
@ -443,15 +443,15 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary)
mtd->type = MTD_NORFLASH;
/* Fill in the default mtd operations */
mtd->erase = cfi_intelext_erase_varsize;
mtd->read = cfi_intelext_read;
mtd->write = cfi_intelext_write_words;
mtd->sync = cfi_intelext_sync;
mtd->lock = cfi_intelext_lock;
mtd->unlock = cfi_intelext_unlock;
mtd->is_locked = cfi_intelext_is_locked;
mtd->suspend = cfi_intelext_suspend;
mtd->resume = cfi_intelext_resume;
mtd->_erase = cfi_intelext_erase_varsize;
mtd->_read = cfi_intelext_read;
mtd->_write = cfi_intelext_write_words;
mtd->_sync = cfi_intelext_sync;
mtd->_lock = cfi_intelext_lock;
mtd->_unlock = cfi_intelext_unlock;
mtd->_is_locked = cfi_intelext_is_locked;
mtd->_suspend = cfi_intelext_suspend;
mtd->_resume = cfi_intelext_resume;
mtd->flags = MTD_CAP_NORFLASH;
mtd->name = map->name;
mtd->writesize = 1;
@ -600,12 +600,12 @@ static struct mtd_info *cfi_intelext_setup(struct mtd_info *mtd)
}
#ifdef CONFIG_MTD_OTP
mtd->read_fact_prot_reg = cfi_intelext_read_fact_prot_reg;
mtd->read_user_prot_reg = cfi_intelext_read_user_prot_reg;
mtd->write_user_prot_reg = cfi_intelext_write_user_prot_reg;
mtd->lock_user_prot_reg = cfi_intelext_lock_user_prot_reg;
mtd->get_fact_prot_info = cfi_intelext_get_fact_prot_info;
mtd->get_user_prot_info = cfi_intelext_get_user_prot_info;
mtd->_read_fact_prot_reg = cfi_intelext_read_fact_prot_reg;
mtd->_read_user_prot_reg = cfi_intelext_read_user_prot_reg;
mtd->_write_user_prot_reg = cfi_intelext_write_user_prot_reg;
mtd->_lock_user_prot_reg = cfi_intelext_lock_user_prot_reg;
mtd->_get_fact_prot_info = cfi_intelext_get_fact_prot_info;
mtd->_get_user_prot_info = cfi_intelext_get_user_prot_info;
#endif
/* This function has the potential to distort the reality
@ -1017,8 +1017,6 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad
case FL_READY:
case FL_STATUS:
case FL_JEDEC_QUERY:
/* We should really make set_vpp() count, rather than doing this */
DISABLE_VPP(map);
break;
default:
printk(KERN_ERR "%s: put_chip() called with oldstate %d!!\n", map->name, chip->oldstate);
@ -1324,7 +1322,7 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
int chipnum;
int ret = 0;
if (!map->virt || (from + len > mtd->size))
if (!map->virt)
return -EINVAL;
/* Now lock the chip(s) to POINT state */
@ -1334,7 +1332,6 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
ofs = from - (chipnum << cfi->chipshift);
*virt = map->virt + cfi->chips[chipnum].start + ofs;
*retlen = 0;
if (phys)
*phys = map->phys + cfi->chips[chipnum].start + ofs;
@ -1369,12 +1366,12 @@ static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
return 0;
}
static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
static int cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
unsigned long ofs;
int chipnum;
int chipnum, err = 0;
/* Now unlock the chip(s) POINT state */
@ -1382,7 +1379,7 @@ static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
chipnum = (from >> cfi->chipshift);
ofs = from - (chipnum << cfi->chipshift);
while (len) {
while (len && !err) {
unsigned long thislen;
struct flchip *chip;
@ -1400,8 +1397,10 @@ static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
chip->ref_point_counter--;
if(chip->ref_point_counter == 0)
chip->state = FL_READY;
} else
printk(KERN_ERR "%s: Warning: unpoint called on non pointed region\n", map->name); /* Should this give an error? */
} else {
printk(KERN_ERR "%s: Error: unpoint called on non pointed region\n", map->name);
err = -EINVAL;
}
put_chip(map, chip, chip->start);
mutex_unlock(&chip->mutex);
@ -1410,6 +1409,8 @@ static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
ofs = 0;
chipnum++;
}
return err;
}
static inline int do_read_onechip(struct map_info *map, struct flchip *chip, loff_t adr, size_t len, u_char *buf)
@ -1456,8 +1457,6 @@ static int cfi_intelext_read (struct mtd_info *mtd, loff_t from, size_t len, siz
chipnum = (from >> cfi->chipshift);
ofs = from - (chipnum << cfi->chipshift);
*retlen = 0;
while (len) {
unsigned long thislen;
@ -1551,7 +1550,8 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
}
xip_enable(map, chip, adr);
out: put_chip(map, chip, adr);
out: DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
return ret;
}
@ -1565,10 +1565,6 @@ static int cfi_intelext_write_words (struct mtd_info *mtd, loff_t to , size_t le
int chipnum;
unsigned long ofs;
*retlen = 0;
if (!len)
return 0;
chipnum = to >> cfi->chipshift;
ofs = to - (chipnum << cfi->chipshift);
@ -1794,7 +1790,8 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
}
xip_enable(map, chip, cmd_adr);
out: put_chip(map, chip, cmd_adr);
out: DISABLE_VPP(map);
put_chip(map, chip, cmd_adr);
mutex_unlock(&chip->mutex);
return ret;
}
@ -1813,7 +1810,6 @@ static int cfi_intelext_writev (struct mtd_info *mtd, const struct kvec *vecs,
for (i = 0; i < count; i++)
len += vecs[i].iov_len;
*retlen = 0;
if (!len)
return 0;
@ -1932,6 +1928,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
ret = -EIO;
} else if (chipstatus & 0x20 && retries--) {
printk(KERN_DEBUG "block erase failed at 0x%08lx: status 0x%lx. Retrying...\n", adr, chipstatus);
DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
goto retry;
@ -1944,7 +1941,8 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
}
xip_enable(map, chip, adr);
out: put_chip(map, chip, adr);
out: DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
return ret;
}
@ -2086,7 +2084,8 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip
}
xip_enable(map, chip, adr);
out: put_chip(map, chip, adr);
out: DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
return ret;
}
@ -2483,7 +2482,7 @@ static int cfi_intelext_suspend(struct mtd_info *mtd)
allowed to. Or should we return -EAGAIN, because the upper layers
ought to have already shut down anything which was using the device
anyway? The latter for now. */
printk(KERN_NOTICE "Flash device refused suspend due to active operation (state %d)\n", chip->oldstate);
printk(KERN_NOTICE "Flash device refused suspend due to active operation (state %d)\n", chip->state);
ret = -EAGAIN;
case FL_PM_SUSPENDED:
break;

283
drivers/mtd/chips/cfi_cmdset_0002.c
View File

@ -59,6 +59,9 @@ static void cfi_amdstd_resume (struct mtd_info *);
static int cfi_amdstd_reboot(struct notifier_block *, unsigned long, void *);
static int cfi_amdstd_secsi_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int cfi_amdstd_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf);
static void cfi_amdstd_destroy(struct mtd_info *);
struct mtd_info *cfi_cmdset_0002(struct map_info *, int);
@ -189,7 +192,7 @@ static void fixup_use_write_buffers(struct mtd_info *mtd)
struct cfi_private *cfi = map->fldrv_priv;
if (cfi->cfiq->BufWriteTimeoutTyp) {
pr_debug("Using buffer write method\n" );
mtd->write = cfi_amdstd_write_buffers;
mtd->_write = cfi_amdstd_write_buffers;
}
}
@ -228,8 +231,8 @@ static void fixup_convert_atmel_pri(struct mtd_info *mtd)
static void fixup_use_secsi(struct mtd_info *mtd)
{
/* Setup for chips with a secsi area */
mtd->read_user_prot_reg = cfi_amdstd_secsi_read;
mtd->read_fact_prot_reg = cfi_amdstd_secsi_read;
mtd->_read_user_prot_reg = cfi_amdstd_secsi_read;
mtd->_read_fact_prot_reg = cfi_amdstd_secsi_read;
}
static void fixup_use_erase_chip(struct mtd_info *mtd)
@ -238,7 +241,7 @@ static void fixup_use_erase_chip(struct mtd_info *mtd)
struct cfi_private *cfi = map->fldrv_priv;
if ((cfi->cfiq->NumEraseRegions == 1) &&
((cfi->cfiq->EraseRegionInfo[0] & 0xffff) == 0)) {
mtd->erase = cfi_amdstd_erase_chip;
mtd->_erase = cfi_amdstd_erase_chip;
}
}
@ -249,8 +252,8 @@ static void fixup_use_erase_chip(struct mtd_info *mtd)
*/
static void fixup_use_atmel_lock(struct mtd_info *mtd)
{
mtd->lock = cfi_atmel_lock;
mtd->unlock = cfi_atmel_unlock;
mtd->_lock = cfi_atmel_lock;
mtd->_unlock = cfi_atmel_unlock;
mtd->flags |= MTD_POWERUP_LOCK;
}
@ -429,12 +432,12 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
mtd->type = MTD_NORFLASH;
/* Fill in the default mtd operations */
mtd->erase = cfi_amdstd_erase_varsize;
mtd->write = cfi_amdstd_write_words;
mtd->read = cfi_amdstd_read;
mtd->sync = cfi_amdstd_sync;
mtd->suspend = cfi_amdstd_suspend;
mtd->resume = cfi_amdstd_resume;
mtd->_erase = cfi_amdstd_erase_varsize;
mtd->_write = cfi_amdstd_write_words;
mtd->_read = cfi_amdstd_read;
mtd->_sync = cfi_amdstd_sync;
mtd->_suspend = cfi_amdstd_suspend;
mtd->_resume = cfi_amdstd_resume;
mtd->flags = MTD_CAP_NORFLASH;
mtd->name = map->name;
mtd->writesize = 1;
@ -443,6 +446,7 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary)
pr_debug("MTD %s(): write buffer size %d\n", __func__,
mtd->writebufsize);
mtd->_panic_write = cfi_amdstd_panic_write;
mtd->reboot_notifier.notifier_call = cfi_amdstd_reboot;
if (cfi->cfi_mode==CFI_MODE_CFI){
@ -770,8 +774,6 @@ static void put_chip(struct map_info *map, struct flchip *chip, unsigned long ad
case FL_READY:
case FL_STATUS:
/* We should really make set_vpp() count, rather than doing this */
DISABLE_VPP(map);
break;
default:
printk(KERN_ERR "MTD: put_chip() called with oldstate %d!!\n", chip->oldstate);
@ -1013,13 +1015,9 @@ static int cfi_amdstd_read (struct mtd_info *mtd, loff_t from, size_t len, size_
int ret = 0;
/* ofs: offset within the first chip that the first read should start */
chipnum = (from >> cfi->chipshift);
ofs = from - (chipnum << cfi->chipshift);
*retlen = 0;
while (len) {
unsigned long thislen;
@ -1097,16 +1095,11 @@ static int cfi_amdstd_secsi_read (struct mtd_info *mtd, loff_t from, size_t len,
int chipnum;
int ret = 0;
/* ofs: offset within the first chip that the first read should start */
/* 8 secsi bytes per chip */
chipnum=from>>3;
ofs=from & 7;
*retlen = 0;
while (len) {
unsigned long thislen;
@ -1234,6 +1227,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
xip_enable(map, chip, adr);
op_done:
chip->state = FL_READY;
DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
@ -1251,10 +1245,6 @@ static int cfi_amdstd_write_words(struct mtd_info *mtd, loff_t to, size_t len,
unsigned long ofs, chipstart;
DECLARE_WAITQUEUE(wait, current);
*retlen = 0;
if (!len)
return 0;
chipnum = to >> cfi->chipshift;
ofs = to - (chipnum << cfi->chipshift);
chipstart = cfi->chips[chipnum].start;
@ -1476,6 +1466,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
ret = -EIO;
op_done:
chip->state = FL_READY;
DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
@ -1493,10 +1484,6 @@ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
int chipnum;
unsigned long ofs;
*retlen = 0;
if (!len)
return 0;
chipnum = to >> cfi->chipshift;
ofs = to - (chipnum << cfi->chipshift);
@ -1562,6 +1549,238 @@ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
return 0;
}
/*
* Wait for the flash chip to become ready to write data
*
* This is only called during the panic_write() path. When panic_write()
* is called, the kernel is in the process of a panic, and will soon be
* dead. Therefore we don't take any locks, and attempt to get access
* to the chip as soon as possible.
*/
static int cfi_amdstd_panic_wait(struct map_info *map, struct flchip *chip,
unsigned long adr)
{
struct cfi_private *cfi = map->fldrv_priv;
int retries = 10;
int i;
/*
* If the driver thinks the chip is idle, and no toggle bits
* are changing, then the chip is actually idle for sure.
*/
if (chip->state == FL_READY && chip_ready(map, adr))
return 0;
/*
* Try several times to reset the chip and then wait for it
* to become idle. The upper limit of a few milliseconds of
* delay isn't a big problem: the kernel is dying anyway. It
* is more important to save the messages.
*/
while (retries > 0) {
const unsigned long timeo = (HZ / 1000) + 1;
/* send the reset command */
map_write(map, CMD(0xF0), chip->start);
/* wait for the chip to become ready */
for (i = 0; i < jiffies_to_usecs(timeo); i++) {
if (chip_ready(map, adr))
return 0;
udelay(1);
}
}
/* the chip never became ready */
return -EBUSY;
}
/*
* Write out one word of data to a single flash chip during a kernel panic
*
* This is only called during the panic_write() path. When panic_write()
* is called, the kernel is in the process of a panic, and will soon be
* dead. Therefore we don't take any locks, and attempt to get access
* to the chip as soon as possible.
*
* The implementation of this routine is intentionally similar to
* do_write_oneword(), in order to ease code maintenance.
*/
static int do_panic_write_oneword(struct map_info *map, struct flchip *chip,
unsigned long adr, map_word datum)
{
const unsigned long uWriteTimeout = (HZ / 1000) + 1;
struct cfi_private *cfi = map->fldrv_priv;
int retry_cnt = 0;
map_word oldd;
int ret = 0;
int i;
adr += chip->start;
ret = cfi_amdstd_panic_wait(map, chip, adr);
if (ret)
return ret;
pr_debug("MTD %s(): PANIC WRITE 0x%.8lx(0x%.8lx)\n",
__func__, adr, datum.x[0]);
/*
* Check for a NOP for the case when the datum to write is already
* present - it saves time and works around buggy chips that corrupt
* data at other locations when 0xff is written to a location that
* already contains 0xff.
*/
oldd = map_read(map, adr);
if (map_word_equal(map, oldd, datum)) {
pr_debug("MTD %s(): NOP\n", __func__);
goto op_done;
}
ENABLE_VPP(map);
retry:
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0xA0, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
map_write(map, datum, adr);
for (i = 0; i < jiffies_to_usecs(uWriteTimeout); i++) {
if (chip_ready(map, adr))
break;
udelay(1);
}
if (!chip_good(map, adr, datum)) {
/* reset on all failures. */
map_write(map, CMD(0xF0), chip->start);
/* FIXME - should have reset delay before continuing */
if (++retry_cnt <= MAX_WORD_RETRIES)
goto retry;
ret = -EIO;
}
op_done:
DISABLE_VPP(map);
return ret;
}
/*
* Write out some data during a kernel panic
*
* This is used by the mtdoops driver to save the dying messages from a
* kernel which has panic'd.
*
* This routine ignores all of the locking used throughout the rest of the
* driver, in order to ensure that the data gets written out no matter what
* state this driver (and the flash chip itself) was in when the kernel crashed.
*
* The implementation of this routine is intentionally similar to
* cfi_amdstd_write_words(), in order to ease code maintenance.
*/
static int cfi_amdstd_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
struct map_info *map = mtd->priv;
struct cfi_private *cfi = map->fldrv_priv;
unsigned long ofs, chipstart;
int ret = 0;
int chipnum;
chipnum = to >> cfi->chipshift;
ofs = to - (chipnum << cfi->chipshift);
chipstart = cfi->chips[chipnum].start;
/* If it's not bus aligned, do the first byte write */
if (ofs & (map_bankwidth(map) - 1)) {
unsigned long bus_ofs = ofs & ~(map_bankwidth(map) - 1);
int i = ofs - bus_ofs;
int n = 0;
map_word tmp_buf;
ret = cfi_amdstd_panic_wait(map, &cfi->chips[chipnum], bus_ofs);
if (ret)
return ret;
/* Load 'tmp_buf' with old contents of flash */
tmp_buf = map_read(map, bus_ofs + chipstart);
/* Number of bytes to copy from buffer */
n = min_t(int, len, map_bankwidth(map) - i);
tmp_buf = map_word_load_partial(map, tmp_buf, buf, i, n);
ret = do_panic_write_oneword(map, &cfi->chips[chipnum],
bus_ofs, tmp_buf);
if (ret)
return ret;
ofs += n;
buf += n;
(*retlen) += n;
len -= n;
if (ofs >> cfi->chipshift) {
chipnum++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
}
}
/* We are now aligned, write as much as possible */
while (len >= map_bankwidth(map)) {
map_word datum;
datum = map_word_load(map, buf);
ret = do_panic_write_oneword(map, &cfi->chips[chipnum],
ofs, datum);
if (ret)
return ret;
ofs += map_bankwidth(map);
buf += map_bankwidth(map);
(*retlen) += map_bankwidth(map);
len -= map_bankwidth(map);
if (ofs >> cfi->chipshift) {
chipnum++;
ofs = 0;
if (chipnum == cfi->numchips)
return 0;
chipstart = cfi->chips[chipnum].start;
}
}
/* Write the trailing bytes if any */
if (len & (map_bankwidth(map) - 1)) {
map_word tmp_buf;
ret = cfi_amdstd_panic_wait(map, &cfi->chips[chipnum], ofs);
if (ret)
return ret;
tmp_buf = map_read(map, ofs + chipstart);
tmp_buf = map_word_load_partial(map, tmp_buf, buf, 0, len);
ret = do_panic_write_oneword(map, &cfi->chips[chipnum],
ofs, tmp_buf);
if (ret)
return ret;
(*retlen) += len;
}
return 0;
}
/*
* Handle devices with one erase region, that only implement
@ -1649,6 +1868,7 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip)
chip->state = FL_READY;
xip_enable(map, chip, adr);
DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
@ -1739,6 +1959,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
}
chip->state = FL_READY;
DISABLE_VPP(map);
put_chip(map, chip, adr);
mutex_unlock(&chip->mutex);
return ret;

33
drivers/mtd/chips/cfi_cmdset_0020.c
View File

@ -228,15 +228,15 @@ static struct mtd_info *cfi_staa_setup(struct map_info *map)
}
/* Also select the correct geometry setup too */
mtd->erase = cfi_staa_erase_varsize;
mtd->read = cfi_staa_read;
mtd->write = cfi_staa_write_buffers;
mtd->writev = cfi_staa_writev;
mtd->sync = cfi_staa_sync;
mtd->lock = cfi_staa_lock;
mtd->unlock = cfi_staa_unlock;
mtd->suspend = cfi_staa_suspend;
mtd->resume = cfi_staa_resume;
mtd->_erase = cfi_staa_erase_varsize;
mtd->_read = cfi_staa_read;
mtd->_write = cfi_staa_write_buffers;
mtd->_writev = cfi_staa_writev;
mtd->_sync = cfi_staa_sync;
mtd->_lock = cfi_staa_lock;
mtd->_unlock = cfi_staa_unlock;
mtd->_suspend = cfi_staa_suspend;
mtd->_resume = cfi_staa_resume;
mtd->flags = MTD_CAP_NORFLASH & ~MTD_BIT_WRITEABLE;
mtd->writesize = 8; /* FIXME: Should be 0 for STMicro flashes w/out ECC */
mtd->writebufsize = cfi_interleave(cfi) << cfi->cfiq->MaxBufWriteSize;
@ -394,8 +394,6 @@ static int cfi_staa_read (struct mtd_info *mtd, loff_t from, size_t len, size_t
chipnum = (from >> cfi->chipshift);
ofs = from - (chipnum << cfi->chipshift);
*retlen = 0;
while (len) {
unsigned long thislen;
@ -617,10 +615,6 @@ static int cfi_staa_write_buffers (struct mtd_info *mtd, loff_t to,
int chipnum;
unsigned long ofs;
*retlen = 0;
if (!len)
return 0;
chipnum = to >> cfi->chipshift;
ofs = to - (chipnum << cfi->chipshift);
@ -904,12 +898,6 @@ static int cfi_staa_erase_varsize(struct mtd_info *mtd,
int i, first;
struct mtd_erase_region_info *regions = mtd->eraseregions;
if (instr->addr > mtd->size)
return -EINVAL;
if ((instr->len + instr->addr) > mtd->size)
return -EINVAL;
/* Check that both start and end of the requested erase are
* aligned with the erasesize at the appropriate addresses.
*/
@ -1155,9 +1143,6 @@ static int cfi_staa_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
if (len & (mtd->erasesize -1))
return -EINVAL;
if ((len + ofs) > mtd->size)
return -EINVAL;
chipnum = ofs >> cfi->chipshift;
adr = ofs - (chipnum << cfi->chipshift);

6
drivers/mtd/chips/cfi_util.c
View File

@ -173,12 +173,6 @@ int cfi_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob,
int i, first;
struct mtd_erase_region_info *regions = mtd->eraseregions;
if (ofs > mtd->size)
return -EINVAL;
if ((len + ofs) > mtd->size)
return -EINVAL;
/* Check that both start and end of the requested erase are
* aligned with the erasesize at the appropriate addresses.
*/

4
drivers/mtd/chips/fwh_lock.h
View File

@ -101,7 +101,7 @@ static void fixup_use_fwh_lock(struct mtd_info *mtd)
{
printk(KERN_NOTICE "using fwh lock/unlock method\n");
/* Setup for the chips with the fwh lock method */
mtd->lock = fwh_lock_varsize;
mtd->unlock = fwh_unlock_varsize;
mtd->_lock = fwh_lock_varsize;
mtd->_unlock = fwh_unlock_varsize;
}
#endif /* FWH_LOCK_H */

10
drivers/mtd/chips/map_absent.c
View File

@ -55,10 +55,10 @@ static struct mtd_info *map_absent_probe(struct map_info *map)
mtd->name = map->name;
mtd->type = MTD_ABSENT;
mtd->size = map->size;
mtd->erase = map_absent_erase;
mtd->read = map_absent_read;
mtd->write = map_absent_write;
mtd->sync = map_absent_sync;
mtd->_erase = map_absent_erase;
mtd->_read = map_absent_read;
mtd->_write = map_absent_write;
mtd->_sync = map_absent_sync;
mtd->flags = 0;
mtd->erasesize = PAGE_SIZE;
mtd->writesize = 1;
@ -70,13 +70,11 @@ static struct mtd_info *map_absent_probe(struct map_info *map)
static int map_absent_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
{
*retlen = 0;
return -ENODEV;
}
static int map_absent_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
{
*retlen = 0;
return -ENODEV;
}

14
drivers/mtd/chips/map_ram.c
View File

@ -64,11 +64,11 @@ static struct mtd_info *map_ram_probe(struct map_info *map)
mtd->name = map->name;
mtd->type = MTD_RAM;
mtd->size = map->size;
mtd->erase = mapram_erase;
mtd->get_unmapped_area = mapram_unmapped_area;
mtd->read = mapram_read;
mtd->write = mapram_write;
mtd->sync = mapram_nop;
mtd->_erase = mapram_erase;
mtd->_get_unmapped_area = mapram_unmapped_area;
mtd->_read = mapram_read;
mtd->_write = mapram_write;
mtd->_sync = mapram_nop;
mtd->flags = MTD_CAP_RAM;
mtd->writesize = 1;
@ -122,14 +122,10 @@ static int mapram_erase (struct mtd_info *mtd, struct erase_info *instr)
unsigned long i;
allff = map_word_ff(map);
for (i=0; i<instr->len; i += map_bankwidth(map))
map_write(map, allff, instr->addr + i);
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
return 0;
}

13
drivers/mtd/chips/map_rom.c
View File

@ -41,11 +41,11 @@ static struct mtd_info *map_rom_probe(struct map_info *map)
mtd->name = map->name;
mtd->type = MTD_ROM;
mtd->size = map->size;
mtd->get_unmapped_area = maprom_unmapped_area;
mtd->read = maprom_read;
mtd->write = maprom_write;
mtd->sync = maprom_nop;
mtd->erase = maprom_erase;
mtd->_get_unmapped_area = maprom_unmapped_area;
mtd->_read = maprom_read;
mtd->_write = maprom_write;
mtd->_sync = maprom_nop;
mtd->_erase = maprom_erase;
mtd->flags = MTD_CAP_ROM;
mtd->erasesize = map->size;
mtd->writesize = 1;
@ -85,8 +85,7 @@ static void maprom_nop(struct mtd_info *mtd)
static int maprom_write (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf)
{
printk(KERN_NOTICE "maprom_write called\n");
return -EIO;
return -EROFS;
}
static int maprom_erase (struct mtd_info *mtd, struct erase_info *info)

7
drivers/mtd/devices/Kconfig
View File

@ -103,6 +103,13 @@ config M25PXX_USE_FAST_READ
help
This option enables FAST_READ access supported by ST M25Pxx.
config MTD_SPEAR_SMI
tristate "SPEAR MTD NOR Support through SMI controller"
depends on PLAT_SPEAR
default y
help
This enable SNOR support on SPEAR platforms using SMI controller
config MTD_SST25L
tristate "Support SST25L (non JEDEC) SPI Flash chips"
depends on SPI_MASTER

1
drivers/mtd/devices/Makefile
View File

@ -17,6 +17,7 @@ obj-$(CONFIG_MTD_LART) += lart.o
obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o
obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o
obj-$(CONFIG_MTD_M25P80) += m25p80.o
obj-$(CONFIG_MTD_SPEAR_SMI) += spear_smi.o
obj-$(CONFIG_MTD_SST25L) += sst25l.o
CFLAGS_docg3.o += -I$(src)

28
drivers/mtd/devices/block2mtd.c
View File

@ -104,14 +104,6 @@ static int block2mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
int offset = from & (PAGE_SIZE-1);
int cpylen;
if (from > mtd->size)
return -EINVAL;
if (from + len > mtd->size)
len = mtd->size - from;
if (retlen)
*retlen = 0;
while (len) {
if ((offset + len) > PAGE_SIZE)
cpylen = PAGE_SIZE - offset; // multiple pages
@ -148,8 +140,6 @@ static int _block2mtd_write(struct block2mtd_dev *dev, const u_char *buf,
int offset = to & ~PAGE_MASK; // page offset
int cpylen;
if (retlen)
*retlen = 0;
while (len) {
if ((offset+len) > PAGE_SIZE)
cpylen = PAGE_SIZE - offset; // multiple pages
@ -188,13 +178,6 @@ static int block2mtd_write(struct mtd_info *mtd, loff_t to, size_t len,
struct block2mtd_dev *dev = mtd->priv;
int err;
if (!len)
return 0;
if (to >= mtd->size)
return -ENOSPC;
if (to + len > mtd->size)
len = mtd->size - to;
mutex_lock(&dev->write_mutex);
err = _block2mtd_write(dev, buf, to, len, retlen);
mutex_unlock(&dev->write_mutex);
@ -283,13 +266,14 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size)
dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;
dev->mtd.erasesize = erase_size;
dev->mtd.writesize = 1;
dev->mtd.writebufsize = PAGE_SIZE;
dev->mtd.type = MTD_RAM;
dev->mtd.flags = MTD_CAP_RAM;
dev->mtd.erase = block2mtd_erase;
dev->mtd.write = block2mtd_write;
dev->mtd.writev = mtd_writev;
dev->mtd.sync = block2mtd_sync;
dev->mtd.read = block2mtd_read;
dev->mtd._erase = block2mtd_erase;
dev->mtd._write = block2mtd_write;
dev->mtd._writev = mtd_writev;
dev->mtd._sync = block2mtd_sync;
dev->mtd._read = block2mtd_read;
dev->mtd.priv = dev;
dev->mtd.owner = THIS_MODULE;

25
drivers/mtd/devices/doc2000.c
View File

@ -562,14 +562,15 @@ void DoC2k_init(struct mtd_info *mtd)
mtd->type = MTD_NANDFLASH;
mtd->flags = MTD_CAP_NANDFLASH;
mtd->writesize = 512;
mtd->writebufsize = mtd->writesize = 512;
mtd->oobsize = 16;
mtd->ecc_strength = 2;
mtd->owner = THIS_MODULE;
mtd->erase = doc_erase;
mtd->read = doc_read;
mtd->write = doc_write;
mtd->read_oob = doc_read_oob;
mtd->write_oob = doc_write_oob;
mtd->_erase = doc_erase;
mtd->_read = doc_read;
mtd->_write = doc_write;
mtd->_read_oob = doc_read_oob;
mtd->_write_oob = doc_write_oob;
this->curfloor = -1;
this->curchip = -1;
mutex_init(&this->lock);
@ -602,13 +603,7 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
int i, len256 = 0, ret=0;
size_t left = len;
/* Don't allow read past end of device */
if (from >= this->totlen)
return -EINVAL;
mutex_lock(&this->lock);
*retlen = 0;
while (left) {
len = left;
@ -748,13 +743,7 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t left = len;
int status;
/* Don't allow write past end of device */
if (to >= this->totlen)
return -EINVAL;
mutex_lock(&this->lock);
*retlen = 0;
while (left) {
len = left;

22
drivers/mtd/devices/doc2001.c
View File

@ -346,14 +346,15 @@ void DoCMil_init(struct mtd_info *mtd)
/* FIXME: erase size is not always 8KiB */
mtd->erasesize = 0x2000;
mtd->writesize = 512;
mtd->writebufsize = mtd->writesize = 512;
mtd->oobsize = 16;
mtd->ecc_strength = 2;
mtd->owner = THIS_MODULE;
mtd->erase = doc_erase;
mtd->read = doc_read;
mtd->write = doc_write;
mtd->read_oob = doc_read_oob;
mtd->write_oob = doc_write_oob;
mtd->_erase = doc_erase;
mtd->_read = doc_read;
mtd->_write = doc_write;
mtd->_read_oob = doc_read_oob;
mtd->_write_oob = doc_write_oob;
this->curfloor = -1;
this->curchip = -1;
@ -383,10 +384,6 @@ static int doc_read (struct mtd_info *mtd, loff_t from, size_t len,
void __iomem *docptr = this->virtadr;
struct Nand *mychip = &this->chips[from >> (this->chipshift)];
/* Don't allow read past end of device */
if (from >= this->totlen)
return -EINVAL;
/* Don't allow a single read to cross a 512-byte block boundary */
if (from + len > ((from | 0x1ff) + 1))
len = ((from | 0x1ff) + 1) - from;
@ -494,10 +491,6 @@ static int doc_write (struct mtd_info *mtd, loff_t to, size_t len,
void __iomem *docptr = this->virtadr;
struct Nand *mychip = &this->chips[to >> (this->chipshift)];
/* Don't allow write past end of device */
if (to >= this->totlen)
return -EINVAL;
#if 0
/* Don't allow a single write to cross a 512-byte block boundary */
if (to + len > ( (to | 0x1ff) + 1))
@ -599,7 +592,6 @@ static int doc_write (struct mtd_info *mtd, loff_t to, size_t len,
printk("Error programming flash\n");
/* Error in programming
FIXME: implement Bad Block Replacement (in nftl.c ??) */
*retlen = 0;
ret = -EIO;
}
dummy = ReadDOC(docptr, LastDataRead);

22
drivers/mtd/devices/doc2001plus.c
View File

@ -467,14 +467,15 @@ void DoCMilPlus_init(struct mtd_info *mtd)
mtd->type = MTD_NANDFLASH;
mtd->flags = MTD_CAP_NANDFLASH;
mtd->writesize = 512;
mtd->writebufsize = mtd->writesize = 512;
mtd->oobsize = 16;
mtd->ecc_strength = 2;
mtd->owner = THIS_MODULE;
mtd->erase = doc_erase;
mtd->read = doc_read;
mtd->write = doc_write;
mtd->read_oob = doc_read_oob;
mtd->write_oob = doc_write_oob;
mtd->_erase = doc_erase;
mtd->_read = doc_read;
mtd->_write = doc_write;
mtd->_read_oob = doc_read_oob;
mtd->_write_oob = doc_write_oob;
this->curfloor = -1;
this->curchip = -1;
@ -581,10 +582,6 @@ static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
void __iomem * docptr = this->virtadr;
struct Nand *mychip = &this->chips[from >> (this->chipshift)];
/* Don't allow read past end of device */
if (from >= this->totlen)
return -EINVAL;
/* Don't allow a single read to cross a 512-byte block boundary */
if (from + len > ((from | 0x1ff) + 1))
len = ((from | 0x1ff) + 1) - from;
@ -700,10 +697,6 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
void __iomem * docptr = this->virtadr;
struct Nand *mychip = &this->chips[to >> (this->chipshift)];
/* Don't allow write past end of device */
if (to >= this->totlen)
return -EINVAL;
/* Don't allow writes which aren't exactly one block (512 bytes) */
if ((to & 0x1ff) || (len != 0x200))
return -EINVAL;
@ -800,7 +793,6 @@ static int doc_write(struct mtd_info *mtd, loff_t to, size_t len,
printk("MTD: Error 0x%x programming at 0x%x\n", dummy, (int)to);
/* Error in programming
FIXME: implement Bad Block Replacement (in nftl.c ??) */
*retlen = 0;
ret = -EIO;
}
dummy = ReadDOC(docptr, Mplus_LastDataRead);

201
drivers/mtd/devices/docg3.c
View File

@ -80,14 +80,9 @@ static struct nand_ecclayout docg3_oobinfo = {
.oobavail = 8,
};
/**
* struct docg3_bch - BCH engine
*/
static struct bch_control *docg3_bch;
static inline u8 doc_readb(struct docg3 *docg3, u16 reg)
{
u8 val = readb(docg3->base + reg);
u8 val = readb(docg3->cascade->base + reg);
trace_docg3_io(0, 8, reg, (int)val);
return val;
@ -95,7 +90,7 @@ static inline u8 doc_readb(struct docg3 *docg3, u16 reg)
static inline u16 doc_readw(struct docg3 *docg3, u16 reg)
{
u16 val = readw(docg3->base + reg);
u16 val = readw(docg3->cascade->base + reg);
trace_docg3_io(0, 16, reg, (int)val);
return val;
@ -103,13 +98,13 @@ static inline u16 doc_readw(struct docg3 *docg3, u16 reg)
static inline void doc_writeb(struct docg3 *docg3, u8 val, u16 reg)
{
writeb(val, docg3->base + reg);
writeb(val, docg3->cascade->base + reg);
trace_docg3_io(1, 8, reg, val);
}
static inline void doc_writew(struct docg3 *docg3, u16 val, u16 reg)
{
writew(val, docg3->base + reg);
writew(val, docg3->cascade->base + reg);
trace_docg3_io(1, 16, reg, val);
}
@ -643,7 +638,8 @@ static int doc_ecc_bch_fix_data(struct docg3 *docg3, void *buf, u8 *hwecc)
for (i = 0; i < DOC_ECC_BCH_SIZE; i++)
ecc[i] = bitrev8(hwecc[i]);
numerrs = decode_bch(docg3_bch, NULL, DOC_ECC_BCH_COVERED_BYTES,
numerrs = decode_bch(docg3->cascade->bch, NULL,
DOC_ECC_BCH_COVERED_BYTES,
NULL, ecc, NULL, errorpos);
BUG_ON(numerrs == -EINVAL);
if (numerrs < 0)
@ -734,7 +730,7 @@ err:
* doc_read_page_getbytes - Reads bytes from a prepared page
* @docg3: the device
* @len: the number of bytes to be read (must be a multiple of 4)
* @buf: the buffer to be filled in
* @buf: the buffer to be filled in (or NULL is forget bytes)
* @first: 1 if first time read, DOC_READADDRESS should be set
*
*/
@ -849,7 +845,7 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops)
{
struct docg3 *docg3 = mtd->priv;
int block0, block1, page, ret, ofs = 0;
int block0, block1, page, ret, skip, ofs = 0;
u8 *oobbuf = ops->oobbuf;
u8 *buf = ops->datbuf;
size_t len, ooblen, nbdata, nboob;
@ -869,34 +865,36 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
doc_dbg("doc_read_oob(from=%lld, mode=%d, data=(%p:%zu), oob=(%p:%zu))\n",
from, ops->mode, buf, len, oobbuf, ooblen);
if ((len % DOC_LAYOUT_PAGE_SIZE) || (ooblen % DOC_LAYOUT_OOB_SIZE) ||
(from % DOC_LAYOUT_PAGE_SIZE))
if (ooblen % DOC_LAYOUT_OOB_SIZE)
return -EINVAL;
ret = -EINVAL;
calc_block_sector(from + len, &block0, &block1, &page, &ofs,
docg3->reliable);
if (block1 > docg3->max_block)
goto err;
if (from + len > mtd->size)
return -EINVAL;
ops->oobretlen = 0;
ops->retlen = 0;
ret = 0;
skip = from % DOC_LAYOUT_PAGE_SIZE;
mutex_lock(&docg3->cascade->lock);
while (!ret && (len > 0 || ooblen > 0)) {
calc_block_sector(from, &block0, &block1, &page, &ofs,
calc_block_sector(from - skip, &block0, &block1, &page, &ofs,
docg3->reliable);
nbdata = min_t(size_t, len, (size_t)DOC_LAYOUT_PAGE_SIZE);
nbdata = min_t(size_t, len, DOC_LAYOUT_PAGE_SIZE - skip);
nboob = min_t(size_t, ooblen, (size_t)DOC_LAYOUT_OOB_SIZE);
ret = doc_read_page_prepare(docg3, block0, block1, page, ofs);
if (ret < 0)
goto err;
goto out;
ret = doc_read_page_ecc_init(docg3, DOC_ECC_BCH_TOTAL_BYTES);
if (ret < 0)
goto err_in_read;
ret = doc_read_page_getbytes(docg3, nbdata, buf, 1);
ret = doc_read_page_getbytes(docg3, skip, NULL, 1);
if (ret < skip)
goto err_in_read;
ret = doc_read_page_getbytes(docg3, nbdata, buf, 0);
if (ret < nbdata)
goto err_in_read;
doc_read_page_getbytes(docg3, DOC_LAYOUT_PAGE_SIZE - nbdata,
doc_read_page_getbytes(docg3,
DOC_LAYOUT_PAGE_SIZE - nbdata - skip,
NULL, 0);
ret = doc_read_page_getbytes(docg3, nboob, oobbuf, 0);
if (ret < nboob)
@ -950,13 +948,15 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from,
len -= nbdata;
ooblen -= nboob;
from += DOC_LAYOUT_PAGE_SIZE;
skip = 0;
}
out:
mutex_unlock(&docg3->cascade->lock);
return ret;
err_in_read:
doc_read_page_finish(docg3);
err:
return ret;
goto out;
}
/**
@ -1114,10 +1114,10 @@ static int doc_get_op_status(struct docg3 *docg3)
*/
static int doc_write_erase_wait_status(struct docg3 *docg3)
{
int status, ret = 0;
int i, status, ret = 0;
if (!doc_is_ready(docg3))
usleep_range(3000, 3000);
for (i = 0; !doc_is_ready(docg3) && i < 5; i++)
msleep(20);
if (!doc_is_ready(docg3)) {
doc_dbg("Timeout reached and the chip is still not ready\n");
ret = -EAGAIN;
@ -1196,18 +1196,19 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *info)
int block0, block1, page, ret, ofs = 0;
doc_dbg("doc_erase(from=%lld, len=%lld\n", info->addr, info->len);
doc_set_device_id(docg3, docg3->device_id);
info->state = MTD_ERASE_PENDING;
calc_block_sector(info->addr + info->len, &block0, &block1, &page,
&ofs, docg3->reliable);
ret = -EINVAL;
if (block1 > docg3->max_block || page || ofs)
if (info->addr + info->len > mtd->size || page || ofs)
goto reset_err;
ret = 0;
calc_block_sector(info->addr, &block0, &block1, &page, &ofs,
docg3->reliable);
mutex_lock(&docg3->cascade->lock);
doc_set_device_id(docg3, docg3->device_id);
doc_set_reliable_mode(docg3);
for (len = info->len; !ret && len > 0; len -= mtd->erasesize) {
info->state = MTD_ERASING;
@ -1215,6 +1216,7 @@ static int doc_erase(struct mtd_info *mtd, struct erase_info *info)
block0 += 2;
block1 += 2;
}
mutex_unlock(&docg3->cascade->lock);
if (ret)
goto reset_err;
@ -1401,7 +1403,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
struct mtd_oob_ops *ops)
{
struct docg3 *docg3 = mtd->priv;
int block0, block1, page, ret, pofs = 0, autoecc, oobdelta;
int ret, autoecc, oobdelta;
u8 *oobbuf = ops->oobbuf;
u8 *buf = ops->datbuf;
size_t len, ooblen;
@ -1438,12 +1440,8 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
if (len && ooblen &&
(len / DOC_LAYOUT_PAGE_SIZE) != (ooblen / oobdelta))
return -EINVAL;
ret = -EINVAL;
calc_block_sector(ofs + len, &block0, &block1, &page, &pofs,
docg3->reliable);
if (block1 > docg3->max_block)
goto err;
if (ofs + len > mtd->size)
return -EINVAL;
ops->oobretlen = 0;
ops->retlen = 0;
@ -1457,6 +1455,7 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
if (autoecc < 0)
return autoecc;
mutex_lock(&docg3->cascade->lock);
while (!ret && len > 0) {
memset(oob, 0, sizeof(oob));
if (ofs == docg3->oob_write_ofs)
@ -1477,8 +1476,9 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
}
ops->retlen += DOC_LAYOUT_PAGE_SIZE;
}
err:
doc_set_device_id(docg3, 0);
mutex_unlock(&docg3->cascade->lock);
return ret;
}
@ -1535,9 +1535,11 @@ static ssize_t dps0_is_key_locked(struct device *dev,
struct docg3 *docg3 = sysfs_dev2docg3(dev, attr);
int dps0;
mutex_lock(&docg3->cascade->lock);
doc_set_device_id(docg3, docg3->device_id);
dps0 = doc_register_readb(docg3, DOC_DPS0_STATUS);
doc_set_device_id(docg3, 0);
mutex_unlock(&docg3->cascade->lock);
return sprintf(buf, "%d\n", !(dps0 & DOC_DPS_KEY_OK));
}
@ -1548,9 +1550,11 @@ static ssize_t dps1_is_key_locked(struct device *dev,
struct docg3 *docg3 = sysfs_dev2docg3(dev, attr);
int dps1;
mutex_lock(&docg3->cascade->lock);
doc_set_device_id(docg3, docg3->device_id);
dps1 = doc_register_readb(docg3, DOC_DPS1_STATUS);
doc_set_device_id(docg3, 0);
mutex_unlock(&docg3->cascade->lock);
return sprintf(buf, "%d\n", !(dps1 & DOC_DPS_KEY_OK));
}
@ -1565,10 +1569,12 @@ static ssize_t dps0_insert_key(struct device *dev,
if (count != DOC_LAYOUT_DPS_KEY_LENGTH)
return -EINVAL;
mutex_lock(&docg3->cascade->lock);
doc_set_device_id(docg3, docg3->device_id);
for (i = 0; i < DOC_LAYOUT_DPS_KEY_LENGTH; i++)
doc_writeb(docg3, buf[i], DOC_DPS0_KEY);
doc_set_device_id(docg3, 0);
mutex_unlock(&docg3->cascade->lock);
return count;
}
@ -1582,10 +1588,12 @@ static ssize_t dps1_insert_key(struct device *dev,
if (count != DOC_LAYOUT_DPS_KEY_LENGTH)
return -EINVAL;
mutex_lock(&docg3->cascade->lock);
doc_set_device_id(docg3, docg3->device_id);
for (i = 0; i < DOC_LAYOUT_DPS_KEY_LENGTH; i++)
doc_writeb(docg3, buf[i], DOC_DPS1_KEY);
doc_set_device_id(docg3, 0);
mutex_unlock(&docg3->cascade->lock);
return count;
}
@ -1601,13 +1609,13 @@ static struct device_attribute doc_sys_attrs[DOC_MAX_NBFLOORS][4] = {
};
static int doc_register_sysfs(struct platform_device *pdev,
struct mtd_info **floors)
struct docg3_cascade *cascade)
{
int ret = 0, floor, i = 0;
struct device *dev = &pdev->dev;
for (floor = 0; !ret && floor < DOC_MAX_NBFLOORS && floors[floor];
floor++)
for (floor = 0; !ret && floor < DOC_MAX_NBFLOORS &&
cascade->floors[floor]; floor++)
for (i = 0; !ret && i < 4; i++)
ret = device_create_file(dev, &doc_sys_attrs[floor][i]);
if (!ret)
@ -1621,12 +1629,12 @@ static int doc_register_sysfs(struct platform_device *pdev,
}
static void doc_unregister_sysfs(struct platform_device *pdev,
struct mtd_info **floors)
struct docg3_cascade *cascade)
{
struct device *dev = &pdev->dev;
int floor, i;
for (floor = 0; floor < DOC_MAX_NBFLOORS && floors[floor];
for (floor = 0; floor < DOC_MAX_NBFLOORS && cascade->floors[floor];
floor++)
for (i = 0; i < 4; i++)
device_remove_file(dev, &doc_sys_attrs[floor][i]);
@ -1640,7 +1648,11 @@ static int dbg_flashctrl_show(struct seq_file *s, void *p)
struct docg3 *docg3 = (struct docg3 *)s->private;
int pos = 0;
u8 fctrl = doc_register_readb(docg3, DOC_FLASHCONTROL);
u8 fctrl;
mutex_lock(&docg3->cascade->lock);
fctrl = doc_register_readb(docg3, DOC_FLASHCONTROL);
mutex_unlock(&docg3->cascade->lock);
pos += seq_printf(s,
"FlashControl : 0x%02x (%s,CE# %s,%s,%s,flash %s)\n",
@ -1658,9 +1670,12 @@ static int dbg_asicmode_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;
int pos = 0;
int pctrl = doc_register_readb(docg3, DOC_ASICMODE);
int mode = pctrl & 0x03;
int pos = 0, pctrl, mode;
mutex_lock(&docg3->cascade->lock);
pctrl = doc_register_readb(docg3, DOC_ASICMODE);
mode = pctrl & 0x03;
mutex_unlock(&docg3->cascade->lock);
pos += seq_printf(s,
"%04x : RAM_WE=%d,RSTIN_RESET=%d,BDETCT_RESET=%d,WRITE_ENABLE=%d,POWERDOWN=%d,MODE=%d%d (",
@ -1692,7 +1707,11 @@ static int dbg_device_id_show(struct seq_file *s, void *p)
{
struct docg3 *docg3 = (struct docg3 *)s->private;
int pos = 0;
int id = doc_register_readb(docg3, DOC_DEVICESELECT);
int id;
mutex_lock(&docg3->cascade->lock);
id = doc_register_readb(docg3, DOC_DEVICESELECT);
mutex_unlock(&docg3->cascade->lock);
pos += seq_printf(s, "DeviceId = %d\n", id);
return pos;
@ -1705,6 +1724,7 @@ static int dbg_protection_show(struct seq_file *s, void *p)
int pos = 0;
int protect, dps0, dps0_low, dps0_high, dps1, dps1_low, dps1_high;
mutex_lock(&docg3->cascade->lock);
protect = doc_register_readb(docg3, DOC_PROTECTION);
dps0 = doc_register_readb(docg3, DOC_DPS0_STATUS);
dps0_low = doc_register_readw(docg3, DOC_DPS0_ADDRLOW);
@ -1712,6 +1732,7 @@ static int dbg_protection_show(struct seq_file *s, void *p)
dps1 = doc_register_readb(docg3, DOC_DPS1_STATUS);
dps1_low = doc_register_readw(docg3, DOC_DPS1_ADDRLOW);
dps1_high = doc_register_readw(docg3, DOC_DPS1_ADDRHIGH);
mutex_unlock(&docg3->cascade->lock);
pos += seq_printf(s, "Protection = 0x%02x (",
protect);
@ -1804,7 +1825,7 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
switch (chip_id) {
case DOC_CHIPID_G3:
mtd->name = kasprintf(GFP_KERNEL, "DiskOnChip G3 floor %d",
mtd->name = kasprintf(GFP_KERNEL, "docg3.%d",
docg3->device_id);
docg3->max_block = 2047;
break;
@ -1817,16 +1838,17 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
mtd->erasesize = DOC_LAYOUT_BLOCK_SIZE * DOC_LAYOUT_NBPLANES;
if (docg3->reliable == 2)
mtd->erasesize /= 2;
mtd->writesize = DOC_LAYOUT_PAGE_SIZE;
mtd->writebufsize = mtd->writesize = DOC_LAYOUT_PAGE_SIZE;
mtd->oobsize = DOC_LAYOUT_OOB_SIZE;
mtd->owner = THIS_MODULE;
mtd->erase = doc_erase;
mtd->read = doc_read;
mtd->write = doc_write;
mtd->read_oob = doc_read_oob;
mtd->write_oob = doc_write_oob;
mtd->block_isbad = doc_block_isbad;
mtd->_erase = doc_erase;
mtd->_read = doc_read;
mtd->_write = doc_write;
mtd->_read_oob = doc_read_oob;
mtd->_write_oob = doc_write_oob;
mtd->_block_isbad = doc_block_isbad;
mtd->ecclayout = &docg3_oobinfo;
mtd->ecc_strength = DOC_ECC_BCH_T;
}
/**
@ -1834,6 +1856,7 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
* @base: the io space where the device is probed
* @floor: the floor of the probed device
* @dev: the device
* @cascade: the cascade of chips this devices will belong to
*
* Checks whether a device at the specified IO range, and floor is available.
*
@ -1841,8 +1864,8 @@ static void __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
* if a memory allocation failed. If floor 0 is checked, a reset of the ASIC is
* launched.
*/
static struct mtd_info *doc_probe_device(void __iomem *base, int floor,
struct device *dev)
static struct mtd_info * __init
doc_probe_device(struct docg3_cascade *cascade, int floor, struct device *dev)
{
int ret, bbt_nbpages;
u16 chip_id, chip_id_inv;
@ -1865,7 +1888,7 @@ static struct mtd_info *doc_probe_device(void __iomem *base, int floor,
docg3->dev = dev;
docg3->device_id = floor;
docg3->base = base;
docg3->cascade = cascade;
doc_set_device_id(docg3, docg3->device_id);
if (!floor)
doc_set_asic_mode(docg3, DOC_ASICMODE_RESET);
@ -1882,7 +1905,7 @@ static struct mtd_info *doc_probe_device(void __iomem *base, int floor,
switch (chip_id) {
case DOC_CHIPID_G3:
doc_info("Found a G3 DiskOnChip at addr %p, floor %d\n",
base, floor);
docg3->cascade->base, floor);
break;
default:
doc_err("Chip id %04x is not a DiskOnChip G3 chip\n", chip_id);
@ -1927,10 +1950,12 @@ static void doc_release_device(struct mtd_info *mtd)
static int docg3_resume(struct platform_device *pdev)
{
int i;
struct docg3_cascade *cascade;
struct mtd_info **docg3_floors, *mtd;
struct docg3 *docg3;
docg3_floors = platform_get_drvdata(pdev);
cascade = platform_get_drvdata(pdev);
docg3_floors = cascade->floors;
mtd = docg3_floors[0];
docg3 = mtd->priv;
@ -1952,11 +1977,13 @@ static int docg3_resume(struct platform_device *pdev)
static int docg3_suspend(struct platform_device *pdev, pm_message_t state)
{
int floor, i;
struct docg3_cascade *cascade;
struct mtd_info **docg3_floors, *mtd;
struct docg3 *docg3;
u8 ctrl, pwr_down;
docg3_floors = platform_get_drvdata(pdev);
cascade = platform_get_drvdata(pdev);
docg3_floors = cascade->floors;
for (floor = 0; floor < DOC_MAX_NBFLOORS; floor++) {
mtd = docg3_floors[floor];
if (!mtd)
@ -2006,7 +2033,7 @@ static int __init docg3_probe(struct platform_device *pdev)
struct resource *ress;
void __iomem *base;
int ret, floor, found = 0;
struct mtd_info **docg3_floors;
struct docg3_cascade *cascade;
ret = -ENXIO;
ress = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@ -2017,17 +2044,19 @@ static int __init docg3_probe(struct platform_device *pdev)
base = ioremap(ress->start, DOC_IOSPACE_SIZE);
ret = -ENOMEM;
docg3_floors = kzalloc(sizeof(*docg3_floors) * DOC_MAX_NBFLOORS,
GFP_KERNEL);
if (!docg3_floors)
cascade = kzalloc(sizeof(*cascade) * DOC_MAX_NBFLOORS,
GFP_KERNEL);
if (!cascade)
goto nomem1;
docg3_bch = init_bch(DOC_ECC_BCH_M, DOC_ECC_BCH_T,
cascade->base = base;
mutex_init(&cascade->lock);
cascade->bch = init_bch(DOC_ECC_BCH_M, DOC_ECC_BCH_T,
DOC_ECC_BCH_PRIMPOLY);
if (!docg3_bch)
if (!cascade->bch)
goto nomem2;
for (floor = 0; floor < DOC_MAX_NBFLOORS; floor++) {
mtd = doc_probe_device(base, floor, dev);
mtd = doc_probe_device(cascade, floor, dev);
if (IS_ERR(mtd)) {
ret = PTR_ERR(mtd);
goto err_probe;
@ -2038,7 +2067,7 @@ static int __init docg3_probe(struct platform_device *pdev)
else
continue;
}
docg3_floors[floor] = mtd;
cascade->floors[floor] = mtd;
ret = mtd_device_parse_register(mtd, part_probes, NULL, NULL,
0);
if (ret)
@ -2046,26 +2075,26 @@ static int __init docg3_probe(struct platform_device *pdev)
found++;
}
ret = doc_register_sysfs(pdev, docg3_floors);
ret = doc_register_sysfs(pdev, cascade);
if (ret)
goto err_probe;
if (!found)
goto notfound;
platform_set_drvdata(pdev, docg3_floors);
doc_dbg_register(docg3_floors[0]->priv);
platform_set_drvdata(pdev, cascade);
doc_dbg_register(cascade->floors[0]->priv);
return 0;
notfound:
ret = -ENODEV;
dev_info(dev, "No supported DiskOnChip found\n");
err_probe:
free_bch(docg3_bch);
kfree(cascade->bch);
for (floor = 0; floor < DOC_MAX_NBFLOORS; floor++)
if (docg3_floors[floor])
doc_release_device(docg3_floors[floor]);
if (cascade->floors[floor])
doc_release_device(cascade->floors[floor]);
nomem2:
kfree(docg3_floors);
kfree(cascade);
nomem1:
iounmap(base);
noress:
@ -2080,19 +2109,19 @@ noress:
*/
static int __exit docg3_release(struct platform_device *pdev)
{
struct mtd_info **docg3_floors = platform_get_drvdata(pdev);
struct docg3 *docg3 = docg3_floors[0]->priv;
void __iomem *base = docg3->base;
struct docg3_cascade *cascade = platform_get_drvdata(pdev);
struct docg3 *docg3 = cascade->floors[0]->priv;
void __iomem *base = cascade->base;
int floor;
doc_unregister_sysfs(pdev, docg3_floors);
doc_unregister_sysfs(pdev, cascade);
doc_dbg_unregister(docg3);
for (floor = 0; floor < DOC_MAX_NBFLOORS; floor++)
if (docg3_floors[floor])
doc_release_device(docg3_floors[floor]);
if (cascade->floors[floor])
doc_release_device(cascade->floors[floor]);
kfree(docg3_floors);
free_bch(docg3_bch);
free_bch(docg3->cascade->bch);
kfree(cascade);
iounmap(base);
return 0;
}

20
drivers/mtd/devices/docg3.h
View File

@ -22,6 +22,8 @@
#ifndef _MTD_DOCG3_H
#define _MTD_DOCG3_H
#include <linux/mtd/mtd.h>
/*
* Flash memory areas :
* - 0x0000 .. 0x07ff : IPL
@ -266,10 +268,24 @@
*/
#define DOC_LAYOUT_DPS_KEY_LENGTH 8
/**
* struct docg3_cascade - Cascade of 1 to 4 docg3 chips
* @floors: floors (ie. one physical docg3 chip is one floor)
* @base: IO space to access all chips in the cascade
* @bch: the BCH correcting control structure
* @lock: lock to protect docg3 IO space from concurrent accesses
*/
struct docg3_cascade {
struct mtd_info *floors[DOC_MAX_NBFLOORS];
void __iomem *base;
struct bch_control *bch;
struct mutex lock;
};
/**
* struct docg3 - DiskOnChip driver private data
* @dev: the device currently under control
* @base: mapped IO space
* @cascade: the cascade this device belongs to
* @device_id: number of the cascaded DoCG3 device (0, 1, 2 or 3)
* @if_cfg: if true, reads are on 16bits, else reads are on 8bits
@ -287,7 +303,7 @@
*/
struct docg3 {
struct device *dev;
void __iomem *base;
struct docg3_cascade *cascade;
unsigned int device_id:4;
unsigned int if_cfg:1;
unsigned int reliable:2;

17
drivers/mtd/devices/lart.c
View File

@ -367,9 +367,6 @@ static int flash_erase (struct mtd_info *mtd,struct erase_info *instr)
printk (KERN_DEBUG "%s(addr = 0x%.8x, len = %d)\n", __func__, instr->addr, instr->len);
#endif
/* sanity checks */
if (instr->addr + instr->len > mtd->size) return (-EINVAL);
/*
* check that both start and end of the requested erase are
* aligned with the erasesize at the appropriate addresses.
@ -440,10 +437,6 @@ static int flash_read (struct mtd_info *mtd,loff_t from,size_t len,size_t *retle
printk (KERN_DEBUG "%s(from = 0x%.8x, len = %d)\n", __func__, (__u32)from, len);
#endif
/* sanity checks */
if (!len) return (0);
if (from + len > mtd->size) return (-EINVAL);
/* we always read len bytes */
*retlen = len;
@ -522,11 +515,8 @@ static int flash_write (struct mtd_info *mtd,loff_t to,size_t len,size_t *retlen
printk (KERN_DEBUG "%s(to = 0x%.8x, len = %d)\n", __func__, (__u32)to, len);
#endif
*retlen = 0;
/* sanity checks */
if (!len) return (0);
if (to + len > mtd->size) return (-EINVAL);
/* first, we write a 0xFF.... padded byte until we reach a dword boundary */
if (to & (BUSWIDTH - 1))
@ -630,14 +620,15 @@ static int __init lart_flash_init (void)
mtd.name = module_name;
mtd.type = MTD_NORFLASH;
mtd.writesize = 1;
mtd.writebufsize = 4;
mtd.flags = MTD_CAP_NORFLASH;
mtd.size = FLASH_BLOCKSIZE_PARAM * FLASH_NUMBLOCKS_16m_PARAM + FLASH_BLOCKSIZE_MAIN * FLASH_NUMBLOCKS_16m_MAIN;
mtd.erasesize = FLASH_BLOCKSIZE_MAIN;
mtd.numeraseregions = ARRAY_SIZE(erase_regions);
mtd.eraseregions = erase_regions;
mtd.erase = flash_erase;
mtd.read = flash_read;
mtd.write = flash_write;
mtd._erase = flash_erase;
mtd._read = flash_read;
mtd._write = flash_write;
mtd.owner = THIS_MODULE;
#ifdef LART_DEBUG

56
drivers/mtd/devices/m25p80.c
View File

@ -288,9 +288,6 @@ static int m25p80_erase(struct mtd_info *mtd, struct erase_info *instr)
__func__, (long long)instr->addr,
(long long)instr->len);
/* sanity checks */
if (instr->addr + instr->len > flash->mtd.size)
return -EINVAL;
div_u64_rem(instr->len, mtd->erasesize, &rem);
if (rem)
return -EINVAL;
@ -349,13 +346,6 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
pr_debug("%s: %s from 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
__func__, (u32)from, len);
/* sanity checks */
if (!len)
return 0;
if (from + len > flash->mtd.size)
return -EINVAL;
spi_message_init(&m);
memset(t, 0, (sizeof t));
@ -371,9 +361,6 @@ static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
t[1].len = len;
spi_message_add_tail(&t[1], &m);
/* Byte count starts at zero. */
*retlen = 0;
mutex_lock(&flash->lock);
/* Wait till previous write/erase is done. */
@ -417,15 +404,6 @@ static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len,
pr_debug("%s: %s to 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
__func__, (u32)to, len);
*retlen = 0;
/* sanity checks */
if (!len)
return(0);
if (to + len > flash->mtd.size)
return -EINVAL;
spi_message_init(&m);
memset(t, 0, (sizeof t));
@ -509,15 +487,6 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len,
pr_debug("%s: %s to 0x%08x, len %zd\n", dev_name(&flash->spi->dev),
__func__, (u32)to, len);
*retlen = 0;
/* sanity checks */
if (!len)
return 0;
if (to + len > flash->mtd.size)
return -EINVAL;
spi_message_init(&m);
memset(t, 0, (sizeof t));
@ -908,14 +877,14 @@ static int __devinit m25p_probe(struct spi_device *spi)
flash->mtd.writesize = 1;
flash->mtd.flags = MTD_CAP_NORFLASH;
flash->mtd.size = info->sector_size * info->n_sectors;
flash->mtd.erase = m25p80_erase;
flash->mtd.read = m25p80_read;
flash->mtd._erase = m25p80_erase;
flash->mtd._read = m25p80_read;
/* sst flash chips use AAI word program */
if (JEDEC_MFR(info->jedec_id) == CFI_MFR_SST)
flash->mtd.write = sst_write;
flash->mtd._write = sst_write;
else
flash->mtd.write = m25p80_write;
flash->mtd._write = m25p80_write;
/* prefer "small sector" erase if possible */
if (info->flags & SECT_4K) {
@ -932,6 +901,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
ppdata.of_node = spi->dev.of_node;
flash->mtd.dev.parent = &spi->dev;
flash->page_size = info->page_size;
flash->mtd.writebufsize = flash->page_size;
if (info->addr_width)
flash->addr_width = info->addr_width;
@ -1004,21 +974,7 @@ static struct spi_driver m25p80_driver = {
*/
};
static int __init m25p80_init(void)
{
return spi_register_driver(&m25p80_driver);
}
static void __exit m25p80_exit(void)
{
spi_unregister_driver(&m25p80_driver);
}
module_init(m25p80_init);
module_exit(m25p80_exit);
module_spi_driver(m25p80_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Mike Lavender");

12
drivers/mtd/devices/ms02-nv.c
View File

@ -59,12 +59,8 @@ static int ms02nv_read(struct mtd_info *mtd, loff_t from,
{
struct ms02nv_private *mp = mtd->priv;
if (from + len > mtd->size)
return -EINVAL;
memcpy(buf, mp->uaddr + from, len);
*retlen = len;
return 0;
}
@ -73,12 +69,8 @@ static int ms02nv_write(struct mtd_info *mtd, loff_t to,
{
struct ms02nv_private *mp = mtd->priv;
if (to + len > mtd->size)
return -EINVAL;
memcpy(mp->uaddr + to, buf, len);
*retlen = len;
return 0;
}
@ -215,8 +207,8 @@ static int __init ms02nv_init_one(ulong addr)
mtd->size = fixsize;
mtd->name = (char *)ms02nv_name;
mtd->owner = THIS_MODULE;
mtd->read = ms02nv_read;
mtd->write = ms02nv_write;
mtd->_read = ms02nv_read;
mtd->_write = ms02nv_write;
mtd->writesize = 1;
ret = -EIO;

50
drivers/mtd/devices/mtd_dataflash.c
View File

@ -164,9 +164,6 @@ static int dataflash_erase(struct mtd_info *mtd, struct erase_info *instr)
dev_name(&spi->dev), (long long)instr->addr,
(long long)instr->len);
/* Sanity checks */
if (instr->addr + instr->len > mtd->size)
return -EINVAL;
div_u64_rem(instr->len, priv->page_size, &rem);
if (rem)
return -EINVAL;
@ -252,14 +249,6 @@ static int dataflash_read(struct mtd_info *mtd, loff_t from, size_t len,
pr_debug("%s: read 0x%x..0x%x\n", dev_name(&priv->spi->dev),
(unsigned)from, (unsigned)(from + len));
*retlen = 0;
/* Sanity checks */
if (!len)
return 0;
if (from + len > mtd->size)
return -EINVAL;
/* Calculate flash page/byte address */
addr = (((unsigned)from / priv->page_size) << priv->page_offset)
+ ((unsigned)from % priv->page_size);
@ -328,14 +317,6 @@ static int dataflash_write(struct mtd_info *mtd, loff_t to, size_t len,
pr_debug("%s: write 0x%x..0x%x\n",
dev_name(&spi->dev), (unsigned)to, (unsigned)(to + len));
*retlen = 0;
/* Sanity checks */
if (!len)
return 0;
if ((to + len) > mtd->size)
return -EINVAL;
spi_message_init(&msg);
x[0].tx_buf = command = priv->command;
@ -490,8 +471,6 @@ static ssize_t otp_read(struct spi_device *spi, unsigned base,
if ((off + len) > 64)
len = 64 - off;
if (len == 0)
return len;
spi_message_init(&m);
@ -611,16 +590,16 @@ static int dataflash_write_user_otp(struct mtd_info *mtd,
static char *otp_setup(struct mtd_info *device, char revision)
{
device->get_fact_prot_info = dataflash_get_otp_info;
device->read_fact_prot_reg = dataflash_read_fact_otp;
device->get_user_prot_info = dataflash_get_otp_info;
device->read_user_prot_reg = dataflash_read_user_otp;
device->_get_fact_prot_info = dataflash_get_otp_info;
device->_read_fact_prot_reg = dataflash_read_fact_otp;
device->_get_user_prot_info = dataflash_get_otp_info;
device->_read_user_prot_reg = dataflash_read_user_otp;
/* rev c parts (at45db321c and at45db1281 only!) use a
* different write procedure; not (yet?) implemented.
*/
if (revision > 'c')
device->write_user_prot_reg = dataflash_write_user_otp;
device->_write_user_prot_reg = dataflash_write_user_otp;
return ", OTP";
}
@ -672,9 +651,9 @@ add_dataflash_otp(struct spi_device *spi, char *name,
device->owner = THIS_MODULE;
device->type = MTD_DATAFLASH;
device->flags = MTD_WRITEABLE;
device->erase = dataflash_erase;
device->read = dataflash_read;
device->write = dataflash_write;
device->_erase = dataflash_erase;
device->_read = dataflash_read;
device->_write = dataflash_write;
device->priv = priv;
device->dev.parent = &spi->dev;
@ -946,18 +925,7 @@ static struct spi_driver dataflash_driver = {
/* FIXME: investigate suspend and resume... */
};
static int __init dataflash_init(void)
{
return spi_register_driver(&dataflash_driver);
}
module_init(dataflash_init);
static void __exit dataflash_exit(void)
{
spi_unregister_driver(&dataflash_driver);
}
module_exit(dataflash_exit);
module_spi_driver(dataflash_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Andrew Victor, David Brownell");

35
drivers/mtd/devices/mtdram.c
View File

@ -34,34 +34,23 @@ static struct mtd_info *mtd_info;
static int ram_erase(struct mtd_info *mtd, struct erase_info *instr)
{
if (instr->addr + instr->len > mtd->size)
return -EINVAL;
memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
return 0;
}
static int ram_point(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys)
{
if (from + len > mtd->size)
return -EINVAL;
/* can we return a physical address with this driver? */
if (phys)
return -EINVAL;
*virt = mtd->priv + from;
*retlen = len;
return 0;
}
static void ram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
static int ram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
return 0;
}
/*
@ -80,11 +69,7 @@ static unsigned long ram_get_unmapped_area(struct mtd_info *mtd,
static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
if (from + len > mtd->size)
return -EINVAL;
memcpy(buf, mtd->priv + from, len);
*retlen = len;
return 0;
}
@ -92,11 +77,7 @@ static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,
static int ram_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
if (to + len > mtd->size)
return -EINVAL;
memcpy((char *)mtd->priv + to, buf, len);
*retlen = len;
return 0;
}
@ -126,12 +107,12 @@ int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
mtd->priv = mapped_address;
mtd->owner = THIS_MODULE;
mtd->erase = ram_erase;
mtd->point = ram_point;
mtd->unpoint = ram_unpoint;
mtd->get_unmapped_area = ram_get_unmapped_area;
mtd->read = ram_read;
mtd->write = ram_write;
mtd->_erase = ram_erase;
mtd->_point = ram_point;
mtd->_unpoint = ram_unpoint;
mtd->_get_unmapped_area = ram_get_unmapped_area;
mtd->_read = ram_read;
mtd->_write = ram_write;
if (mtd_device_register(mtd, NULL, 0))
return -EIO;

76
drivers/mtd/devices/phram.c
View File

@ -33,45 +33,33 @@ struct phram_mtd_list {
static LIST_HEAD(phram_list);
static int phram_erase(struct mtd_info *mtd, struct erase_info *instr)
{
u_char *start = mtd->priv;
if (instr->addr + instr->len > mtd->size)
return -EINVAL;
memset(start + instr->addr, 0xff, instr->len);
/* This'll catch a few races. Free the thing before returning :)
/*
* This'll catch a few races. Free the thing before returning :)
* I don't feel at all ashamed. This kind of thing is possible anyway
* with flash, but unlikely.
*/
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
return 0;
}
static int phram_point(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys)
{
if (from + len > mtd->size)
return -EINVAL;
/* can we return a physical address with this driver? */
if (phys)
return -EINVAL;
*virt = mtd->priv + from;
*retlen = len;
return 0;
}
static void phram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
static int phram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
return 0;
}
static int phram_read(struct mtd_info *mtd, loff_t from, size_t len,
@ -79,14 +67,7 @@ static int phram_read(struct mtd_info *mtd, loff_t from, size_t len,
{
u_char *start = mtd->priv;
if (from >= mtd->size)
return -EINVAL;
if (len > mtd->size - from)
len = mtd->size - from;
memcpy(buf, start + from, len);
*retlen = len;
return 0;
}
@ -96,20 +77,11 @@ static int phram_write(struct mtd_info *mtd, loff_t to, size_t len,
{
u_char *start = mtd->priv;
if (to >= mtd->size)
return -EINVAL;
if (len > mtd->size - to)
len = mtd->size - to;
memcpy(start + to, buf, len);
*retlen = len;
return 0;
}
static void unregister_devices(void)
{
struct phram_mtd_list *this, *safe;
@ -142,11 +114,11 @@ static int register_device(char *name, unsigned long start, unsigned long len)
new->mtd.name = name;
new->mtd.size = len;
new->mtd.flags = MTD_CAP_RAM;
new->mtd.erase = phram_erase;
new->mtd.point = phram_point;
new->mtd.unpoint = phram_unpoint;
new->mtd.read = phram_read;
new->mtd.write = phram_write;
new->mtd._erase = phram_erase;
new->mtd._point = phram_point;
new->mtd._unpoint = phram_unpoint;
new->mtd._read = phram_read;
new->mtd._write = phram_write;
new->mtd.owner = THIS_MODULE;
new->mtd.type = MTD_RAM;
new->mtd.erasesize = PAGE_SIZE;
@ -233,7 +205,17 @@ static inline void kill_final_newline(char *str)
return 1; \
} while (0)
static int phram_setup(const char *val, struct kernel_param *kp)
/*
* This shall contain the module parameter if any. It is of the form:
* - phram=<device>,<address>,<size> for module case
* - phram.phram=<device>,<address>,<size> for built-in case
* We leave 64 bytes for the device name, 12 for the address and 12 for the
* size.
* Example: phram.phram=rootfs,0xa0000000,512Mi
*/
static __initdata char phram_paramline[64+12+12];
static int __init phram_setup(const char *val)
{
char buf[64+12+12], *str = buf;
char *token[3];
@ -282,12 +264,28 @@ static int phram_setup(const char *val, struct kernel_param *kp)
return ret;
}
module_param_call(phram, phram_setup, NULL, NULL, 000);
static int __init phram_param_call(const char *val, struct kernel_param *kp)
{
/*
* This function is always called before 'init_phram()', whether
* built-in or module.
*/
if (strlen(val) >= sizeof(phram_paramline))
return -ENOSPC;
strcpy(phram_paramline, val);
return 0;
}
module_param_call(phram, phram_param_call, NULL, NULL, 000);
MODULE_PARM_DESC(phram, "Memory region to map. \"phram=<name>,<start>,<length>\"");
static int __init init_phram(void)
{
if (phram_paramline[0])
return phram_setup(phram_paramline);
return 0;
}

99
drivers/mtd/devices/pmc551.c
View File

@ -94,12 +94,48 @@
#include <linux/ioctl.h>
#include <asm/io.h>
#include <linux/pci.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/pmc551.h>
#define PMC551_VERSION \
"Ramix PMC551 PCI Mezzanine Ram Driver. (C) 1999,2000 Nortel Networks.\n"
#define PCI_VENDOR_ID_V3_SEMI 0x11b0
#define PCI_DEVICE_ID_V3_SEMI_V370PDC 0x0200
#define PMC551_PCI_MEM_MAP0 0x50
#define PMC551_PCI_MEM_MAP1 0x54
#define PMC551_PCI_MEM_MAP_MAP_ADDR_MASK 0x3ff00000
#define PMC551_PCI_MEM_MAP_APERTURE_MASK 0x000000f0
#define PMC551_PCI_MEM_MAP_REG_EN 0x00000002
#define PMC551_PCI_MEM_MAP_ENABLE 0x00000001
#define PMC551_SDRAM_MA 0x60
#define PMC551_SDRAM_CMD 0x62
#define PMC551_DRAM_CFG 0x64
#define PMC551_SYS_CTRL_REG 0x78
#define PMC551_DRAM_BLK0 0x68
#define PMC551_DRAM_BLK1 0x6c
#define PMC551_DRAM_BLK2 0x70
#define PMC551_DRAM_BLK3 0x74
#define PMC551_DRAM_BLK_GET_SIZE(x) (524288 << ((x >> 4) & 0x0f))
#define PMC551_DRAM_BLK_SET_COL_MUX(x, v) (((x) & ~0x00007000) | (((v) & 0x7) << 12))
#define PMC551_DRAM_BLK_SET_ROW_MUX(x, v) (((x) & ~0x00000f00) | (((v) & 0xf) << 8))
struct mypriv {
struct pci_dev *dev;
u_char *start;
u32 base_map0;
u32 curr_map0;
u32 asize;
struct mtd_info *nextpmc551;
};
static struct mtd_info *pmc551list;
static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys);
static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
{
struct mypriv *priv = mtd->priv;
@ -115,16 +151,6 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
#endif
end = instr->addr + instr->len - 1;
/* Is it past the end? */
if (end > mtd->size) {
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_erase() out of bounds (%ld > %ld)\n",
(long)end, (long)mtd->size);
#endif
return -EINVAL;
}
eoff_hi = end & ~(priv->asize - 1);
soff_hi = instr->addr & ~(priv->asize - 1);
eoff_lo = end & (priv->asize - 1);
@ -178,18 +204,6 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
printk(KERN_DEBUG "pmc551_point(%ld, %ld)\n", (long)from, (long)len);
#endif
if (from + len > mtd->size) {
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_point() out of bounds (%ld > %ld)\n",
(long)from + len, (long)mtd->size);
#endif
return -EINVAL;
}
/* can we return a physical address with this driver? */
if (phys)
return -EINVAL;
soff_hi = from & ~(priv->asize - 1);
soff_lo = from & (priv->asize - 1);
@ -205,11 +219,12 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
return 0;
}
static void pmc551_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
static int pmc551_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_unpoint()\n");
#endif
return 0;
}
static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
@ -228,16 +243,6 @@ static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
#endif
end = from + len - 1;
/* Is it past the end? */
if (end > mtd->size) {
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_read() out of bounds (%ld > %ld)\n",
(long)end, (long)mtd->size);
#endif
return -EINVAL;
}
soff_hi = from & ~(priv->asize - 1);
eoff_hi = end & ~(priv->asize - 1);
soff_lo = from & (priv->asize - 1);
@ -295,16 +300,6 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
#endif
end = to + len - 1;
/* Is it past the end? or did the u32 wrap? */
if (end > mtd->size) {
#ifdef CONFIG_MTD_PMC551_DEBUG
printk(KERN_DEBUG "pmc551_write() out of bounds (end: %ld, "
"size: %ld, to: %ld)\n", (long)end, (long)mtd->size,
(long)to);
#endif
return -EINVAL;
}
soff_hi = to & ~(priv->asize - 1);
eoff_hi = end & ~(priv->asize - 1);
soff_lo = to & (priv->asize - 1);
@ -358,7 +353,7 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
* mechanism
* returns the size of the memory region found.
*/
static u32 fixup_pmc551(struct pci_dev *dev)
static int fixup_pmc551(struct pci_dev *dev)
{
#ifdef CONFIG_MTD_PMC551_BUGFIX
u32 dram_data;
@ -668,7 +663,7 @@ static int __init init_pmc551(void)
struct mypriv *priv;
int found = 0;
struct mtd_info *mtd;
u32 length = 0;
int length = 0;
if (msize) {
msize = (1 << (ffs(msize) - 1)) << 20;
@ -786,11 +781,11 @@ static int __init init_pmc551(void)
mtd->size = msize;
mtd->flags = MTD_CAP_RAM;
mtd->erase = pmc551_erase;
mtd->read = pmc551_read;
mtd->write = pmc551_write;
mtd->point = pmc551_point;
mtd->unpoint = pmc551_unpoint;
mtd->_erase = pmc551_erase;
mtd->_read = pmc551_read;
mtd->_write = pmc551_write;
mtd->_point = pmc551_point;
mtd->_unpoint = pmc551_unpoint;
mtd->type = MTD_RAM;
mtd->name = "PMC551 RAM board";
mtd->erasesize = 0x10000;

41
drivers/mtd/devices/slram.c
View File

@ -75,7 +75,7 @@ static slram_mtd_list_t *slram_mtdlist = NULL;
static int slram_erase(struct mtd_info *, struct erase_info *);
static int slram_point(struct mtd_info *, loff_t, size_t, size_t *, void **,
resource_size_t *);
static void slram_unpoint(struct mtd_info *, loff_t, size_t);
static int slram_unpoint(struct mtd_info *, loff_t, size_t);
static int slram_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *);
static int slram_write(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
@ -83,21 +83,13 @@ static int slram_erase(struct mtd_info *mtd, struct erase_info *instr)
{
slram_priv_t *priv = mtd->priv;
if (instr->addr + instr->len > mtd->size) {
return(-EINVAL);
}
memset(priv->start + instr->addr, 0xff, instr->len);
/* This'll catch a few races. Free the thing before returning :)
* I don't feel at all ashamed. This kind of thing is possible anyway
* with flash, but unlikely.
*/
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
return(0);
}
@ -106,20 +98,14 @@ static int slram_point(struct mtd_info *mtd, loff_t from, size_t len,
{
slram_priv_t *priv = mtd->priv;
/* can we return a physical address with this driver? */
if (phys)
return -EINVAL;
if (from + len > mtd->size)
return -EINVAL;
*virt = priv->start + from;
*retlen = len;
return(0);
}
static void slram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
static int slram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
return 0;
}
static int slram_read(struct mtd_info *mtd, loff_t from, size_t len,
@ -127,14 +113,7 @@ static int slram_read(struct mtd_info *mtd, loff_t from, size_t len,
{
slram_priv_t *priv = mtd->priv;
if (from > mtd->size)
return -EINVAL;
if (from + len > mtd->size)
len = mtd->size - from;
memcpy(buf, priv->start + from, len);
*retlen = len;
return(0);
}
@ -144,11 +123,7 @@ static int slram_write(struct mtd_info *mtd, loff_t to, size_t len,
{
slram_priv_t *priv = mtd->priv;
if (to + len > mtd->size)
return -EINVAL;
memcpy(priv->start + to, buf, len);
*retlen = len;
return(0);
}
@ -199,11 +174,11 @@ static int register_device(char *name, unsigned long start, unsigned long length
(*curmtd)->mtdinfo->name = name;
(*curmtd)->mtdinfo->size = length;
(*curmtd)->mtdinfo->flags = MTD_CAP_RAM;
(*curmtd)->mtdinfo->erase = slram_erase;
(*curmtd)->mtdinfo->point = slram_point;
(*curmtd)->mtdinfo->unpoint = slram_unpoint;
(*curmtd)->mtdinfo->read = slram_read;
(*curmtd)->mtdinfo->write = slram_write;
(*curmtd)->mtdinfo->_erase = slram_erase;
(*curmtd)->mtdinfo->_point = slram_point;
(*curmtd)->mtdinfo->_unpoint = slram_unpoint;
(*curmtd)->mtdinfo->_read = slram_read;
(*curmtd)->mtdinfo->_write = slram_write;
(*curmtd)->mtdinfo->owner = THIS_MODULE;
(*curmtd)->mtdinfo->type = MTD_RAM;
(*curmtd)->mtdinfo->erasesize = SLRAM_BLK_SZ;

1147
drivers/mtd/devices/spear_smi.c 100644
View File

File diff suppressed because it is too large Load Diff

46
drivers/mtd/devices/sst25l.c
View File

@ -175,9 +175,6 @@ static int sst25l_erase(struct mtd_info *mtd, struct erase_info *instr)
int err;
/* Sanity checks */
if (instr->addr + instr->len > flash->mtd.size)
return -EINVAL;
if ((uint32_t)instr->len % mtd->erasesize)
return -EINVAL;
@ -223,16 +220,6 @@ static int sst25l_read(struct mtd_info *mtd, loff_t from, size_t len,
unsigned char command[4];
int ret;
/* Sanity checking */
if (len == 0)
return 0;
if (from + len > flash->mtd.size)
return -EINVAL;
if (retlen)
*retlen = 0;
spi_message_init(&message);
memset(&transfer, 0, sizeof(transfer));
@ -274,13 +261,6 @@ static int sst25l_write(struct mtd_info *mtd, loff_t to, size_t len,
int i, j, ret, bytes, copied = 0;
unsigned char command[5];
/* Sanity checks */
if (!len)
return 0;
if (to + len > flash->mtd.size)
return -EINVAL;
if ((uint32_t)to % mtd->writesize)
return -EINVAL;
@ -402,10 +382,11 @@ static int __devinit sst25l_probe(struct spi_device *spi)
flash->mtd.flags = MTD_CAP_NORFLASH;
flash->mtd.erasesize = flash_info->erase_size;
flash->mtd.writesize = flash_info->page_size;
flash->mtd.writebufsize = flash_info->page_size;
flash->mtd.size = flash_info->page_size * flash_info->nr_pages;
flash->mtd.erase = sst25l_erase;
flash->mtd.read = sst25l_read;
flash->mtd.write = sst25l_write;
flash->mtd._erase = sst25l_erase;
flash->mtd._read = sst25l_read;
flash->mtd._write = sst25l_write;
dev_info(&spi->dev, "%s (%lld KiB)\n", flash_info->name,
(long long)flash->mtd.size >> 10);
@ -418,9 +399,9 @@ static int __devinit sst25l_probe(struct spi_device *spi)
flash->mtd.numeraseregions);
ret = mtd_device_parse_register(&flash->mtd, NULL, 0,
data ? data->parts : NULL,
data ? data->nr_parts : 0);
ret = mtd_device_parse_register(&flash->mtd, NULL, NULL,
data ? data->parts : NULL,
data ? data->nr_parts : 0);
if (ret) {
kfree(flash);
dev_set_drvdata(&spi->dev, NULL);
@ -450,18 +431,7 @@ static struct spi_driver sst25l_driver = {
.remove = __devexit_p(sst25l_remove),
};
static int __init sst25l_init(void)
{
return spi_register_driver(&sst25l_driver);
}
static void __exit sst25l_exit(void)
{
spi_unregister_driver(&sst25l_driver);
}
module_init(sst25l_init);
module_exit(sst25l_exit);
module_spi_driver(sst25l_driver);
MODULE_DESCRIPTION("MTD SPI driver for SST25L Flash chips");
MODULE_AUTHOR("Andre Renaud <andre@bluewatersys.com>, "

2
drivers/mtd/inftlcore.c
View File

@ -56,7 +56,7 @@ static void inftl_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd)
if (memcmp(mtd->name, "DiskOnChip", 10))
return;
if (!mtd->block_isbad) {
if (!mtd->_block_isbad) {
printk(KERN_ERR
"INFTL no longer supports the old DiskOnChip drivers loaded via docprobe.\n"
"Please use the new diskonchip driver under the NAND subsystem.\n");

37
drivers/mtd/lpddr/lpddr_cmds.c
View File

@ -40,7 +40,7 @@ static int lpddr_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
static int lpddr_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
size_t *retlen, void **mtdbuf, resource_size_t *phys);
static void lpddr_unpoint(struct mtd_info *mtd, loff_t adr, size_t len);
static int lpddr_unpoint(struct mtd_info *mtd, loff_t adr, size_t len);
static int get_chip(struct map_info *map, struct flchip *chip, int mode);
static int chip_ready(struct map_info *map, struct flchip *chip, int mode);
static void put_chip(struct map_info *map, struct flchip *chip);
@ -63,18 +63,18 @@ struct mtd_info *lpddr_cmdset(struct map_info *map)
mtd->type = MTD_NORFLASH;
/* Fill in the default mtd operations */
mtd->read = lpddr_read;
mtd->_read = lpddr_read;
mtd->type = MTD_NORFLASH;
mtd->flags = MTD_CAP_NORFLASH;
mtd->flags &= ~MTD_BIT_WRITEABLE;
mtd->erase = lpddr_erase;
mtd->write = lpddr_write_buffers;
mtd->writev = lpddr_writev;
mtd->lock = lpddr_lock;
mtd->unlock = lpddr_unlock;
mtd->_erase = lpddr_erase;
mtd->_write = lpddr_write_buffers;
mtd->_writev = lpddr_writev;
mtd->_lock = lpddr_lock;
mtd->_unlock = lpddr_unlock;
if (map_is_linear(map)) {
mtd->point = lpddr_point;
mtd->unpoint = lpddr_unpoint;
mtd->_point = lpddr_point;
mtd->_unpoint = lpddr_unpoint;
}
mtd->size = 1 << lpddr->qinfo->DevSizeShift;
mtd->erasesize = 1 << lpddr->qinfo->UniformBlockSizeShift;
@ -530,14 +530,12 @@ static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
struct flchip *chip = &lpddr->chips[chipnum];
int ret = 0;
if (!map->virt || (adr + len > mtd->size))
if (!map->virt)
return -EINVAL;
/* ofs: offset within the first chip that the first read should start */
ofs = adr - (chipnum << lpddr->chipshift);
*mtdbuf = (void *)map->virt + chip->start + ofs;
*retlen = 0;
while (len) {
unsigned long thislen;
@ -575,11 +573,11 @@ static int lpddr_point(struct mtd_info *mtd, loff_t adr, size_t len,
return 0;
}
static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
static int lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
{
struct map_info *map = mtd->priv;
struct lpddr_private *lpddr = map->fldrv_priv;
int chipnum = adr >> lpddr->chipshift;
int chipnum = adr >> lpddr->chipshift, err = 0;
unsigned long ofs;
/* ofs: offset within the first chip that the first read should start */
@ -603,9 +601,11 @@ static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
chip->ref_point_counter--;
if (chip->ref_point_counter == 0)
chip->state = FL_READY;
} else
} else {
printk(KERN_WARNING "%s: Warning: unpoint called on non"
"pointed region\n", map->name);
err = -EINVAL;
}
put_chip(map, chip);
mutex_unlock(&chip->mutex);
@ -614,6 +614,8 @@ static void lpddr_unpoint (struct mtd_info *mtd, loff_t adr, size_t len)
ofs = 0;
chipnum++;
}
return err;
}
static int lpddr_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
@ -637,13 +639,11 @@ static int lpddr_writev(struct mtd_info *mtd, const struct kvec *vecs,
int chipnum;
unsigned long ofs, vec_seek, i;
int wbufsize = 1 << lpddr->qinfo->BufSizeShift;
size_t len = 0;
for (i = 0; i < count; i++)
len += vecs[i].iov_len;
*retlen = 0;
if (!len)
return 0;
@ -688,9 +688,6 @@ static int lpddr_erase(struct mtd_info *mtd, struct erase_info *instr)
ofs = instr->addr;
len = instr->len;
if (ofs > mtd->size || (len + ofs) > mtd->size)
return -EINVAL;
while (len > 0) {
ret = do_erase_oneblock(mtd, ofs);
if (ret)

4
drivers/mtd/maps/bfin-async-flash.c
View File

@ -164,8 +164,8 @@ static int __devinit bfin_flash_probe(struct platform_device *pdev)
return -ENXIO;
}
mtd_device_parse_register(state->mtd, part_probe_types, 0,
pdata->parts, pdata->nr_parts);
mtd_device_parse_register(state->mtd, part_probe_types, NULL,
pdata->parts, pdata->nr_parts);
platform_set_drvdata(pdev, state);

2
drivers/mtd/maps/dc21285.c
View File

@ -196,7 +196,7 @@ static int __init init_dc21285(void)
dc21285_mtd->owner = THIS_MODULE;
mtd_device_parse_register(dc21285_mtd, probes, 0, NULL, 0);
mtd_device_parse_register(dc21285_mtd, probes, NULL, NULL, 0);
if(machine_is_ebsa285()) {
/*

4
drivers/mtd/maps/gpio-addr-flash.c
View File

@ -252,8 +252,8 @@ static int __devinit gpio_flash_probe(struct platform_device *pdev)
}
mtd_device_parse_register(state->mtd, part_probe_types, 0,
pdata->parts, pdata->nr_parts);
mtd_device_parse_register(state->mtd, part_probe_types, NULL,
pdata->parts, pdata->nr_parts);
return 0;
}

4
drivers/mtd/maps/h720x-flash.c
View File

@ -85,8 +85,8 @@ static int __init h720x_mtd_init(void)
if (mymtd) {
mymtd->owner = THIS_MODULE;
mtd_device_parse_register(mymtd, NULL, 0,
h720x_partitions, NUM_PARTITIONS);
mtd_device_parse_register(mymtd, NULL, NULL,
h720x_partitions, NUM_PARTITIONS);
return 0;
}

2
drivers/mtd/maps/impa7.c
View File

@ -91,7 +91,7 @@ static int __init init_impa7(void)
if (impa7_mtd[i]) {
impa7_mtd[i]->owner = THIS_MODULE;
devicesfound++;
mtd_device_parse_register(impa7_mtd[i], NULL, 0,
mtd_device_parse_register(impa7_mtd[i], NULL, NULL,
partitions,
ARRAY_SIZE(partitions));
}

2
drivers/mtd/maps/intel_vr_nor.c
View File

@ -72,7 +72,7 @@ static int __devinit vr_nor_init_partitions(struct vr_nor_mtd *p)
{
/* register the flash bank */
/* partition the flash bank */
return mtd_device_parse_register(p->info, NULL, 0, NULL, 0);
return mtd_device_parse_register(p->info, NULL, NULL, NULL, 0);
}
static void __devexit vr_nor_destroy_mtd_setup(struct vr_nor_mtd *p)

2
drivers/mtd/maps/ixp2000.c
View File

@ -226,7 +226,7 @@ static int ixp2000_flash_probe(struct platform_device *dev)
}
info->mtd->owner = THIS_MODULE;
err = mtd_device_parse_register(info->mtd, probes, 0, NULL, 0);
err = mtd_device_parse_register(info->mtd, probes, NULL, NULL, 0);
if (err)
goto Error;

5
drivers/mtd/maps/ixp4xx.c
View File

@ -182,6 +182,9 @@ static int ixp4xx_flash_probe(struct platform_device *dev)
{
struct flash_platform_data *plat = dev->dev.platform_data;
struct ixp4xx_flash_info *info;
struct mtd_part_parser_data ppdata = {
.origin = dev->resource->start,
};
int err = -1;
if (!plat)
@ -247,7 +250,7 @@ static int ixp4xx_flash_probe(struct platform_device *dev)
/* Use the fast version */
info->map.write = ixp4xx_write16;
err = mtd_device_parse_register(info->mtd, probes, dev->resource->start,
err = mtd_device_parse_register(info->mtd, probes, &ppdata,
plat->parts, plat->nr_parts);
if (err) {
printk(KERN_ERR "Could not parse partitions\n");

14
drivers/mtd/maps/l440gx.c
View File

@ -27,17 +27,21 @@ static struct mtd_info *mymtd;
/* Is this really the vpp port? */
static DEFINE_SPINLOCK(l440gx_vpp_lock);
static int l440gx_vpp_refcnt;
static void l440gx_set_vpp(struct map_info *map, int vpp)
{
unsigned long l;
unsigned long flags;
l = inl(VPP_PORT);
spin_lock_irqsave(&l440gx_vpp_lock, flags);
if (vpp) {
l |= 1;
if (++l440gx_vpp_refcnt == 1) /* first nested 'on' */
outl(inl(VPP_PORT) | 1, VPP_PORT);
} else {
l &= ~1;
if (--l440gx_vpp_refcnt == 0) /* last nested 'off' */
outl(inl(VPP_PORT) & ~1, VPP_PORT);
}
outl(l, VPP_PORT);
spin_unlock_irqrestore(&l440gx_vpp_lock, flags);
}
static struct map_info l440gx_map = {

6
drivers/mtd/maps/lantiq-flash.c
View File

@ -45,6 +45,7 @@ struct ltq_mtd {
};
static char ltq_map_name[] = "ltq_nor";
static const char *ltq_probe_types[] __devinitconst = { "cmdlinepart", NULL };
static map_word
ltq_read16(struct map_info *map, unsigned long adr)
@ -168,8 +169,9 @@ ltq_mtd_probe(struct platform_device *pdev)
cfi->addr_unlock1 ^= 1;
cfi->addr_unlock2 ^= 1;
err = mtd_device_parse_register(ltq_mtd->mtd, NULL, 0,
ltq_mtd_data->parts, ltq_mtd_data->nr_parts);
err = mtd_device_parse_register(ltq_mtd->mtd, ltq_probe_types, NULL,
ltq_mtd_data->parts,
ltq_mtd_data->nr_parts);
if (err) {
dev_err(&pdev->dev, "failed to add partitions\n");
goto err_destroy;

5
drivers/mtd/maps/latch-addr-flash.c
View File

@ -199,8 +199,9 @@ static int __devinit latch_addr_flash_probe(struct platform_device *dev)
}
info->mtd->owner = THIS_MODULE;
mtd_device_parse_register(info->mtd, NULL, 0,
latch_addr_data->parts, latch_addr_data->nr_parts);
mtd_device_parse_register(info->mtd, NULL, NULL,
latch_addr_data->parts,
latch_addr_data->nr_parts);
return 0;
iounmap:

13
drivers/mtd/maps/pcmciamtd.c
View File

@ -294,13 +294,24 @@ static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *f
}
static DEFINE_SPINLOCK(pcmcia_vpp_lock);
static int pcmcia_vpp_refcnt;
static void pcmciamtd_set_vpp(struct map_info *map, int on)
{
struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
struct pcmcia_device *link = dev->p_dev;
unsigned long flags;
pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp);
pcmcia_fixup_vpp(link, on ? dev->vpp : 0);
spin_lock_irqsave(&pcmcia_vpp_lock, flags);
if (on) {
if (++pcmcia_vpp_refcnt == 1) /* first nested 'on' */
pcmcia_fixup_vpp(link, dev->vpp);
} else {
if (--pcmcia_vpp_refcnt == 0) /* last nested 'off' */
pcmcia_fixup_vpp(link, 0);
}
spin_unlock_irqrestore(&pcmcia_vpp_lock, flags);
}

24
drivers/mtd/maps/physmap.c
View File

@ -27,6 +27,8 @@ struct physmap_flash_info {
struct mtd_info *mtd[MAX_RESOURCES];
struct mtd_info *cmtd;
struct map_info map[MAX_RESOURCES];
spinlock_t vpp_lock;
int vpp_refcnt;
};
static int physmap_flash_remove(struct platform_device *dev)
@ -63,12 +65,26 @@ static void physmap_set_vpp(struct map_info *map, int state)
{
struct platform_device *pdev;
struct physmap_flash_data *physmap_data;
struct physmap_flash_info *info;
unsigned long flags;
pdev = (struct platform_device *)map->map_priv_1;
physmap_data = pdev->dev.platform_data;
if (physmap_data->set_vpp)
physmap_data->set_vpp(pdev, state);
if (!physmap_data->set_vpp)
return;
info = platform_get_drvdata(pdev);
spin_lock_irqsave(&info->vpp_lock, flags);
if (state) {
if (++info->vpp_refcnt == 1) /* first nested 'on' */
physmap_data->set_vpp(pdev, 1);
} else {
if (--info->vpp_refcnt == 0) /* last nested 'off' */
physmap_data->set_vpp(pdev, 0);
}
spin_unlock_irqrestore(&info->vpp_lock, flags);
}
static const char *rom_probe_types[] = {
@ -172,9 +188,11 @@ static int physmap_flash_probe(struct platform_device *dev)
if (err)
goto err_out;
spin_lock_init(&info->vpp_lock);
part_types = physmap_data->part_probe_types ? : part_probe_types;
mtd_device_parse_register(info->cmtd, part_types, 0,
mtd_device_parse_register(info->cmtd, part_types, NULL,
physmap_data->parts, physmap_data->nr_parts);
return 0;

5
drivers/mtd/maps/plat-ram.c
View File

@ -222,8 +222,9 @@ static int platram_probe(struct platform_device *pdev)
/* check to see if there are any available partitions, or wether
* to add this device whole */
err = mtd_device_parse_register(info->mtd, pdata->probes, 0,
pdata->partitions, pdata->nr_partitions);
err = mtd_device_parse_register(info->mtd, pdata->probes, NULL,
pdata->partitions,
pdata->nr_partitions);
if (!err)
dev_info(&pdev->dev, "registered mtd device\n");

3
drivers/mtd/maps/pxa2xx-flash.c
View File

@ -98,7 +98,8 @@ static int __devinit pxa2xx_flash_probe(struct platform_device *pdev)
}
info->mtd->owner = THIS_MODULE;
mtd_device_parse_register(info->mtd, probes, 0, flash->parts, flash->nr_parts);
mtd_device_parse_register(info->mtd, probes, NULL, flash->parts,
flash->nr_parts);
platform_set_drvdata(pdev, info);
return 0;

4
drivers/mtd/maps/rbtx4939-flash.c
View File

@ -102,8 +102,8 @@ static int rbtx4939_flash_probe(struct platform_device *dev)
info->mtd->owner = THIS_MODULE;
if (err)
goto err_out;
err = mtd_device_parse_register(info->mtd, NULL, 0,
pdata->parts, pdata->nr_parts);
err = mtd_device_parse_register(info->mtd, NULL, NULL, pdata->parts,
pdata->nr_parts);
if (err)
goto err_out;

18
drivers/mtd/maps/sa1100-flash.c
View File

@ -36,10 +36,22 @@ struct sa_info {
struct sa_subdev_info subdev[0];
};
static DEFINE_SPINLOCK(sa1100_vpp_lock);
static int sa1100_vpp_refcnt;
static void sa1100_set_vpp(struct map_info *map, int on)
{
struct sa_subdev_info *subdev = container_of(map, struct sa_subdev_info, map);
subdev->plat->set_vpp(on);
unsigned long flags;
spin_lock_irqsave(&sa1100_vpp_lock, flags);
if (on) {
if (++sa1100_vpp_refcnt == 1) /* first nested 'on' */
subdev->plat->set_vpp(1);
} else {
if (--sa1100_vpp_refcnt == 0) /* last nested 'off' */
subdev->plat->set_vpp(0);
}
spin_unlock_irqrestore(&sa1100_vpp_lock, flags);
}
static void sa1100_destroy_subdev(struct sa_subdev_info *subdev)
@ -252,8 +264,8 @@ static int __devinit sa1100_mtd_probe(struct platform_device *pdev)
/*
* Partition selection stuff.
*/
mtd_device_parse_register(info->mtd, part_probes, 0,
plat->parts, plat->nr_parts);
mtd_device_parse_register(info->mtd, part_probes, NULL, plat->parts,
plat->nr_parts);
platform_set_drvdata(pdev, info);
err = 0;

4
drivers/mtd/maps/solutionengine.c
View File

@ -92,8 +92,8 @@ static int __init init_soleng_maps(void)
mtd_device_register(eprom_mtd, NULL, 0);
}
mtd_device_parse_register(flash_mtd, probes, 0,
superh_se_partitions, NUM_PARTITIONS);
mtd_device_parse_register(flash_mtd, probes, NULL,
superh_se_partitions, NUM_PARTITIONS);
return 0;
}

2
drivers/mtd/maps/uclinux.c
View File

@ -85,7 +85,7 @@ static int __init uclinux_mtd_init(void)
}
mtd->owner = THIS_MODULE;
mtd->point = uclinux_point;
mtd->_point = uclinux_point;
mtd->priv = mapp;
uclinux_ram_mtdinfo = mtd;

14
drivers/mtd/maps/vmu-flash.c
View File

@ -360,9 +360,6 @@ static int vmu_flash_read(struct mtd_info *mtd, loff_t from, size_t len,
int index = 0, retval, partition, leftover, numblocks;
unsigned char cx;
if (len < 1)
return -EIO;
mpart = mtd->priv;
mdev = mpart->mdev;
partition = mpart->partition;
@ -434,11 +431,6 @@ static int vmu_flash_write(struct mtd_info *mtd, loff_t to, size_t len,
partition = mpart->partition;
card = maple_get_drvdata(mdev);
/* simple sanity checks */
if (len < 1) {
error = -EIO;
goto failed;
}
numblocks = card->parts[partition].numblocks;
if (to + len > numblocks * card->blocklen)
len = numblocks * card->blocklen - to;
@ -544,9 +536,9 @@ static void vmu_queryblocks(struct mapleq *mq)
mtd_cur->flags = MTD_WRITEABLE|MTD_NO_ERASE;
mtd_cur->size = part_cur->numblocks * card->blocklen;
mtd_cur->erasesize = card->blocklen;
mtd_cur->write = vmu_flash_write;
mtd_cur->read = vmu_flash_read;
mtd_cur->sync = vmu_flash_sync;
mtd_cur->_write = vmu_flash_write;
mtd_cur->_read = vmu_flash_read;
mtd_cur->_sync = vmu_flash_sync;
mtd_cur->writesize = card->blocklen;
mpart = kmalloc(sizeof(struct mdev_part), GFP_KERNEL);

2
drivers/mtd/maps/wr_sbc82xx_flash.c
View File

@ -142,7 +142,7 @@ static int __init init_sbc82xx_flash(void)
nr_parts = ARRAY_SIZE(smallflash_parts);
}
mtd_device_parse_register(sbcmtd[i], part_probes, 0,
mtd_device_parse_register(sbcmtd[i], part_probes, NULL,
defparts, nr_parts);
}
return 0;

1
drivers/mtd/mtd_blkdevs.c
View File

@ -233,6 +233,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
ret = __get_mtd_device(dev->mtd);
if (ret)
goto error_release;
dev->file_mode = mode;
unlock:
dev->open++;

8
drivers/mtd/mtdblock.c
View File

@ -321,8 +321,12 @@ static int mtdblock_release(struct mtd_blktrans_dev *mbd)
mutex_unlock(&mtdblk->cache_mutex);
if (!--mtdblk->count) {
/* It was the last usage. Free the cache */
mtd_sync(mbd->mtd);
/*
* It was the last usage. Free the cache, but only sync if
* opened for writing.
*/
if (mbd->file_mode & FMODE_WRITE)
mtd_sync(mbd->mtd);
vfree(mtdblk->cache_data);
}

4
drivers/mtd/mtdchar.c
View File

@ -405,7 +405,7 @@ static int mtdchar_writeoob(struct file *file, struct mtd_info *mtd,
if (length > 4096)
return -EINVAL;
if (!mtd->write_oob)
if (!mtd->_write_oob)
ret = -EOPNOTSUPP;
else
ret = access_ok(VERIFY_READ, ptr, length) ? 0 : -EFAULT;
@ -576,7 +576,7 @@ static int mtdchar_write_ioctl(struct mtd_info *mtd,
!access_ok(VERIFY_READ, req.usr_data, req.len) ||
!access_ok(VERIFY_READ, req.usr_oob, req.ooblen))
return -EFAULT;
if (!mtd->write_oob)
if (!mtd->_write_oob)
return -EOPNOTSUPP;
ops.mode = req.mode;

106
drivers/mtd/mtdconcat.c
View File

@ -72,8 +72,6 @@ concat_read(struct mtd_info *mtd, loff_t from, size_t len,
int ret = 0, err;
int i;
*retlen = 0;
for (i = 0; i < concat->num_subdev; i++) {
struct mtd_info *subdev = concat->subdev[i];
size_t size, retsize;
@ -126,11 +124,6 @@ concat_write(struct mtd_info *mtd, loff_t to, size_t len,
int err = -EINVAL;
int i;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
*retlen = 0;
for (i = 0; i < concat->num_subdev; i++) {
struct mtd_info *subdev = concat->subdev[i];
size_t size, retsize;
@ -145,11 +138,7 @@ concat_write(struct mtd_info *mtd, loff_t to, size_t len,
else
size = len;
if (!(subdev->flags & MTD_WRITEABLE))
err = -EROFS;
else
err = mtd_write(subdev, to, size, &retsize, buf);
err = mtd_write(subdev, to, size, &retsize, buf);
if (err)
break;
@ -176,19 +165,10 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
int i;
int err = -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
*retlen = 0;
/* Calculate total length of data */
for (i = 0; i < count; i++)
total_len += vecs[i].iov_len;
/* Do not allow write past end of device */
if ((to + total_len) > mtd->size)
return -EINVAL;
/* Check alignment */
if (mtd->writesize > 1) {
uint64_t __to = to;
@ -224,12 +204,8 @@ concat_writev(struct mtd_info *mtd, const struct kvec *vecs,
old_iov_len = vecs_copy[entry_high].iov_len;
vecs_copy[entry_high].iov_len = size;
if (!(subdev->flags & MTD_WRITEABLE))
err = -EROFS;
else
err = mtd_writev(subdev, &vecs_copy[entry_low],
entry_high - entry_low + 1, to,
&retsize);
err = mtd_writev(subdev, &vecs_copy[entry_low],
entry_high - entry_low + 1, to, &retsize);
vecs_copy[entry_high].iov_len = old_iov_len - size;
vecs_copy[entry_high].iov_base += size;
@ -403,15 +379,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
uint64_t length, offset = 0;
struct erase_info *erase;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (instr->addr > concat->mtd.size)
return -EINVAL;
if (instr->len + instr->addr > concat->mtd.size)
return -EINVAL;
/*
* Check for proper erase block alignment of the to-be-erased area.
* It is easier to do this based on the super device's erase
@ -459,8 +426,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
return -EINVAL;
}
instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
/* make a local copy of instr to avoid modifying the caller's struct */
erase = kmalloc(sizeof (struct erase_info), GFP_KERNEL);
@ -499,10 +464,6 @@ static int concat_erase(struct mtd_info *mtd, struct erase_info *instr)
else
erase->len = length;
if (!(subdev->flags & MTD_WRITEABLE)) {
err = -EROFS;
break;
}
length -= erase->len;
if ((err = concat_dev_erase(subdev, erase))) {
/* sanity check: should never happen since
@ -538,9 +499,6 @@ static int concat_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
struct mtd_concat *concat = CONCAT(mtd);
int i, err = -EINVAL;
if ((len + ofs) > mtd->size)
return -EINVAL;
for (i = 0; i < concat->num_subdev; i++) {
struct mtd_info *subdev = concat->subdev[i];
uint64_t size;
@ -575,9 +533,6 @@ static int concat_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
struct mtd_concat *concat = CONCAT(mtd);
int i, err = 0;
if ((len + ofs) > mtd->size)
return -EINVAL;
for (i = 0; i < concat->num_subdev; i++) {
struct mtd_info *subdev = concat->subdev[i];
uint64_t size;
@ -650,9 +605,6 @@ static int concat_block_isbad(struct mtd_info *mtd, loff_t ofs)
if (!mtd_can_have_bb(concat->subdev[0]))
return res;
if (ofs > mtd->size)
return -EINVAL;
for (i = 0; i < concat->num_subdev; i++) {
struct mtd_info *subdev = concat->subdev[i];
@ -673,12 +625,6 @@ static int concat_block_markbad(struct mtd_info *mtd, loff_t ofs)
struct mtd_concat *concat = CONCAT(mtd);
int i, err = -EINVAL;
if (!mtd_can_have_bb(concat->subdev[0]))
return 0;
if (ofs > mtd->size)
return -EINVAL;
for (i = 0; i < concat->num_subdev; i++) {
struct mtd_info *subdev = concat->subdev[i];
@ -716,10 +662,6 @@ static unsigned long concat_get_unmapped_area(struct mtd_info *mtd,
continue;
}
/* we've found the subdev over which the mapping will reside */
if (offset + len > subdev->size)
return (unsigned long) -EINVAL;
return mtd_get_unmapped_area(subdev, len, offset, flags);
}
@ -777,16 +719,16 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c
concat->mtd.subpage_sft = subdev[0]->subpage_sft;
concat->mtd.oobsize = subdev[0]->oobsize;
concat->mtd.oobavail = subdev[0]->oobavail;
if (subdev[0]->writev)
concat->mtd.writev = concat_writev;
if (subdev[0]->read_oob)
concat->mtd.read_oob = concat_read_oob;
if (subdev[0]->write_oob)
concat->mtd.write_oob = concat_write_oob;
if (subdev[0]->block_isbad)
concat->mtd.block_isbad = concat_block_isbad;
if (subdev[0]->block_markbad)
concat->mtd.block_markbad = concat_block_markbad;
if (subdev[0]->_writev)
concat->mtd._writev = concat_writev;
if (subdev[0]->_read_oob)
concat->mtd._read_oob = concat_read_oob;
if (subdev[0]->_write_oob)
concat->mtd._write_oob = concat_write_oob;
if (subdev[0]->_block_isbad)
concat->mtd._block_isbad = concat_block_isbad;
if (subdev[0]->_block_markbad)
concat->mtd._block_markbad = concat_block_markbad;
concat->mtd.ecc_stats.badblocks = subdev[0]->ecc_stats.badblocks;
@ -833,8 +775,8 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c
if (concat->mtd.writesize != subdev[i]->writesize ||
concat->mtd.subpage_sft != subdev[i]->subpage_sft ||
concat->mtd.oobsize != subdev[i]->oobsize ||
!concat->mtd.read_oob != !subdev[i]->read_oob ||
!concat->mtd.write_oob != !subdev[i]->write_oob) {
!concat->mtd._read_oob != !subdev[i]->_read_oob ||
!concat->mtd._write_oob != !subdev[i]->_write_oob) {
kfree(concat);
printk("Incompatible OOB or ECC data on \"%s\"\n",
subdev[i]->name);
@ -849,15 +791,15 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c
concat->num_subdev = num_devs;
concat->mtd.name = name;
concat->mtd.erase = concat_erase;
concat->mtd.read = concat_read;
concat->mtd.write = concat_write;
concat->mtd.sync = concat_sync;
concat->mtd.lock = concat_lock;
concat->mtd.unlock = concat_unlock;
concat->mtd.suspend = concat_suspend;
concat->mtd.resume = concat_resume;
concat->mtd.get_unmapped_area = concat_get_unmapped_area;
concat->mtd._erase = concat_erase;
concat->mtd._read = concat_read;
concat->mtd._write = concat_write;
concat->mtd._sync = concat_sync;
concat->mtd._lock = concat_lock;
concat->mtd._unlock = concat_unlock;
concat->mtd._suspend = concat_suspend;
concat->mtd._resume = concat_resume;
concat->mtd._get_unmapped_area = concat_get_unmapped_area;
/*
* Combine the erase block size info of the subdevices:

271
drivers/mtd/mtdcore.c
View File

@ -107,7 +107,7 @@ static LIST_HEAD(mtd_notifiers);
*/
static void mtd_release(struct device *dev)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
struct mtd_info __maybe_unused *mtd = dev_get_drvdata(dev);
dev_t index = MTD_DEVT(mtd->index);
/* remove /dev/mtdXro node if needed */
@ -126,7 +126,7 @@ static int mtd_cls_resume(struct device *dev)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
if (mtd && mtd->resume)
if (mtd)
mtd_resume(mtd);
return 0;
}
@ -610,8 +610,8 @@ int __get_mtd_device(struct mtd_info *mtd)
if (!try_module_get(mtd->owner))
return -ENODEV;
if (mtd->get_device) {
err = mtd->get_device(mtd);
if (mtd->_get_device) {
err = mtd->_get_device(mtd);
if (err) {
module_put(mtd->owner);
@ -675,13 +675,266 @@ void __put_mtd_device(struct mtd_info *mtd)
--mtd->usecount;
BUG_ON(mtd->usecount < 0);
if (mtd->put_device)
mtd->put_device(mtd);
if (mtd->_put_device)
mtd->_put_device(mtd);
module_put(mtd->owner);
}
EXPORT_SYMBOL_GPL(__put_mtd_device);
/*
* Erase is an asynchronous operation. Device drivers are supposed
* to call instr->callback() whenever the operation completes, even
* if it completes with a failure.
* Callers are supposed to pass a callback function and wait for it
* to be called before writing to the block.
*/
int mtd_erase(struct mtd_info *mtd, struct erase_info *instr)
{
if (instr->addr > mtd->size || instr->len > mtd->size - instr->addr)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
if (!instr->len) {
instr->state = MTD_ERASE_DONE;
mtd_erase_callback(instr);
return 0;
}
return mtd->_erase(mtd, instr);
}
EXPORT_SYMBOL_GPL(mtd_erase);
/*
* This stuff for eXecute-In-Place. phys is optional and may be set to NULL.
*/
int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
void **virt, resource_size_t *phys)
{
*retlen = 0;
*virt = NULL;
if (phys)
*phys = 0;
if (!mtd->_point)
return -EOPNOTSUPP;
if (from < 0 || from > mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
return mtd->_point(mtd, from, len, retlen, virt, phys);
}
EXPORT_SYMBOL_GPL(mtd_point);
/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
if (!mtd->_point)
return -EOPNOTSUPP;
if (from < 0 || from > mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
return mtd->_unpoint(mtd, from, len);
}
EXPORT_SYMBOL_GPL(mtd_unpoint);
/*
* Allow NOMMU mmap() to directly map the device (if not NULL)
* - return the address to which the offset maps
* - return -ENOSYS to indicate refusal to do the mapping
*/
unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,
unsigned long offset, unsigned long flags)
{
if (!mtd->_get_unmapped_area)
return -EOPNOTSUPP;
if (offset > mtd->size || len > mtd->size - offset)
return -EINVAL;
return mtd->_get_unmapped_area(mtd, len, offset, flags);
}
EXPORT_SYMBOL_GPL(mtd_get_unmapped_area);
int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
u_char *buf)
{
*retlen = 0;
if (from < 0 || from > mtd->size || len > mtd->size - from)
return -EINVAL;
if (!len)
return 0;
return mtd->_read(mtd, from, len, retlen, buf);
}
EXPORT_SYMBOL_GPL(mtd_read);
int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
const u_char *buf)
{
*retlen = 0;
if (to < 0 || to > mtd->size || len > mtd->size - to)
return -EINVAL;
if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (!len)
return 0;
return mtd->_write(mtd, to, len, retlen, buf);
}
EXPORT_SYMBOL_GPL(mtd_write);
/*
* In blackbox flight recorder like scenarios we want to make successful writes
* in interrupt context. panic_write() is only intended to be called when its
* known the kernel is about to panic and we need the write to succeed. Since
* the kernel is not going to be running for much longer, this function can
* break locks and delay to ensure the write succeeds (but not sleep).
*/
int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
const u_char *buf)
{
*retlen = 0;
if (!mtd->_panic_write)
return -EOPNOTSUPP;
if (to < 0 || to > mtd->size || len > mtd->size - to)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (!len)
return 0;
return mtd->_panic_write(mtd, to, len, retlen, buf);
}
EXPORT_SYMBOL_GPL(mtd_panic_write);
/*
* Method to access the protection register area, present in some flash
* devices. The user data is one time programmable but the factory data is read
* only.
*/
int mtd_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
size_t len)
{
if (!mtd->_get_fact_prot_info)
return -EOPNOTSUPP;
if (!len)
return 0;
return mtd->_get_fact_prot_info(mtd, buf, len);
}
EXPORT_SYMBOL_GPL(mtd_get_fact_prot_info);
int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
*retlen = 0;
if (!mtd->_read_fact_prot_reg)
return -EOPNOTSUPP;
if (!len)
return 0;
return mtd->_read_fact_prot_reg(mtd, from, len, retlen, buf);
}
EXPORT_SYMBOL_GPL(mtd_read_fact_prot_reg);
int mtd_get_user_prot_info(struct mtd_info *mtd, struct otp_info *buf,
size_t len)
{
if (!mtd->_get_user_prot_info)
return -EOPNOTSUPP;
if (!len)
return 0;
return mtd->_get_user_prot_info(mtd, buf, len);
}
EXPORT_SYMBOL_GPL(mtd_get_user_prot_info);
int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
*retlen = 0;
if (!mtd->_read_user_prot_reg)
return -EOPNOTSUPP;
if (!len)
return 0;
return mtd->_read_user_prot_reg(mtd, from, len, retlen, buf);
}
EXPORT_SYMBOL_GPL(mtd_read_user_prot_reg);
int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, u_char *buf)
{
*retlen = 0;
if (!mtd->_write_user_prot_reg)
return -EOPNOTSUPP;
if (!len)
return 0;
return mtd->_write_user_prot_reg(mtd, to, len, retlen, buf);
}
EXPORT_SYMBOL_GPL(mtd_write_user_prot_reg);
int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len)
{
if (!mtd->_lock_user_prot_reg)
return -EOPNOTSUPP;
if (!len)
return 0;
return mtd->_lock_user_prot_reg(mtd, from, len);
}
EXPORT_SYMBOL_GPL(mtd_lock_user_prot_reg);
/* Chip-supported device locking */
int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
if (!mtd->_lock)
return -EOPNOTSUPP;
if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
return mtd->_lock(mtd, ofs, len);
}
EXPORT_SYMBOL_GPL(mtd_lock);
int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
if (!mtd->_unlock)
return -EOPNOTSUPP;
if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
return mtd->_unlock(mtd, ofs, len);
}
EXPORT_SYMBOL_GPL(mtd_unlock);
int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
if (!mtd->_is_locked)
return -EOPNOTSUPP;
if (ofs < 0 || ofs > mtd->size || len > mtd->size - ofs)
return -EINVAL;
if (!len)
return 0;
return mtd->_is_locked(mtd, ofs, len);
}
EXPORT_SYMBOL_GPL(mtd_is_locked);
int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs)
{
if (!mtd->_block_isbad)
return 0;
if (ofs < 0 || ofs > mtd->size)
return -EINVAL;
return mtd->_block_isbad(mtd, ofs);
}
EXPORT_SYMBOL_GPL(mtd_block_isbad);
int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs)
{
if (!mtd->_block_markbad)
return -EOPNOTSUPP;
if (ofs < 0 || ofs > mtd->size)
return -EINVAL;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
return mtd->_block_markbad(mtd, ofs);
}
EXPORT_SYMBOL_GPL(mtd_block_markbad);
/*
* default_mtd_writev - the default writev method
* @mtd: mtd device description object pointer
@ -729,9 +982,11 @@ int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
unsigned long count, loff_t to, size_t *retlen)
{
*retlen = 0;
if (!mtd->writev)
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (!mtd->_writev)
return default_mtd_writev(mtd, vecs, count, to, retlen);
return mtd->writev(mtd, vecs, count, to, retlen);
return mtd->_writev(mtd, vecs, count, to, retlen);
}
EXPORT_SYMBOL_GPL(mtd_writev);

9
drivers/mtd/mtdoops.c
View File

@ -169,7 +169,7 @@ static void mtdoops_workfunc_erase(struct work_struct *work)
cxt->nextpage = 0;
}
while (mtd_can_have_bb(mtd)) {
while (1) {
ret = mtd_block_isbad(mtd, cxt->nextpage * record_size);
if (!ret)
break;
@ -199,9 +199,9 @@ badblock:
return;
}
if (mtd_can_have_bb(mtd) && ret == -EIO) {
if (ret == -EIO) {
ret = mtd_block_markbad(mtd, cxt->nextpage * record_size);
if (ret < 0) {
if (ret < 0 && ret != -EOPNOTSUPP) {
printk(KERN_ERR "mtdoops: block_markbad failed, aborting\n");
return;
}
@ -257,8 +257,7 @@ static void find_next_position(struct mtdoops_context *cxt)
size_t retlen;
for (page = 0; page < cxt->oops_pages; page++) {
if (mtd_can_have_bb(mtd) &&
mtd_block_isbad(mtd, page * record_size))
if (mtd_block_isbad(mtd, page * record_size))
continue;
/* Assume the page is used */
mark_page_used(cxt, page);

200
drivers/mtd/mtdpart.c
View File

@ -65,12 +65,8 @@ static int part_read(struct mtd_info *mtd, loff_t from, size_t len,
int res;
stats = part->master->ecc_stats;
if (from >= mtd->size)
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
res = mtd_read(part->master, from + part->offset, len, retlen, buf);
res = part->master->_read(part->master, from + part->offset, len,
retlen, buf);
if (unlikely(res)) {
if (mtd_is_bitflip(res))
mtd->ecc_stats.corrected += part->master->ecc_stats.corrected - stats.corrected;
@ -84,19 +80,16 @@ static int part_point(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, void **virt, resource_size_t *phys)
{
struct mtd_part *part = PART(mtd);
if (from >= mtd->size)
len = 0;
else if (from + len > mtd->size)
len = mtd->size - from;
return mtd_point(part->master, from + part->offset, len, retlen,
virt, phys);
return part->master->_point(part->master, from + part->offset, len,
retlen, virt, phys);
}
static void part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
static int part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
{
struct mtd_part *part = PART(mtd);
mtd_unpoint(part->master, from + part->offset, len);
return part->master->_unpoint(part->master, from + part->offset, len);
}
static unsigned long part_get_unmapped_area(struct mtd_info *mtd,
@ -107,7 +100,8 @@ static unsigned long part_get_unmapped_area(struct mtd_info *mtd,
struct mtd_part *part = PART(mtd);
offset += part->offset;
return mtd_get_unmapped_area(part->master, len, offset, flags);
return part->master->_get_unmapped_area(part->master, len, offset,
flags);
}
static int part_read_oob(struct mtd_info *mtd, loff_t from,
@ -138,7 +132,7 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from,
return -EINVAL;
}
res = mtd_read_oob(part->master, from + part->offset, ops);
res = part->master->_read_oob(part->master, from + part->offset, ops);
if (unlikely(res)) {
if (mtd_is_bitflip(res))
mtd->ecc_stats.corrected++;
@ -152,55 +146,46 @@ static int part_read_user_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len, size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
return mtd_read_user_prot_reg(part->master, from, len, retlen, buf);
return part->master->_read_user_prot_reg(part->master, from, len,
retlen, buf);
}
static int part_get_user_prot_info(struct mtd_info *mtd,
struct otp_info *buf, size_t len)
{
struct mtd_part *part = PART(mtd);
return mtd_get_user_prot_info(part->master, buf, len);
return part->master->_get_user_prot_info(part->master, buf, len);
}
static int part_read_fact_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len, size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
return mtd_read_fact_prot_reg(part->master, from, len, retlen, buf);
return part->master->_read_fact_prot_reg(part->master, from, len,
retlen, buf);
}
static int part_get_fact_prot_info(struct mtd_info *mtd, struct otp_info *buf,
size_t len)
{
struct mtd_part *part = PART(mtd);
return mtd_get_fact_prot_info(part->master, buf, len);
return part->master->_get_fact_prot_info(part->master, buf, len);
}
static int part_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
struct mtd_part *part = PART(mtd);
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (to >= mtd->size)
len = 0;
else if (to + len > mtd->size)
len = mtd->size - to;
return mtd_write(part->master, to + part->offset, len, retlen, buf);
return part->master->_write(part->master, to + part->offset, len,
retlen, buf);
}
static int part_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
struct mtd_part *part = PART(mtd);
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (to >= mtd->size)
len = 0;
else if (to + len > mtd->size)
len = mtd->size - to;
return mtd_panic_write(part->master, to + part->offset, len, retlen,
buf);
return part->master->_panic_write(part->master, to + part->offset, len,
retlen, buf);
}
static int part_write_oob(struct mtd_info *mtd, loff_t to,
@ -208,50 +193,43 @@ static int part_write_oob(struct mtd_info *mtd, loff_t to,
{
struct mtd_part *part = PART(mtd);
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (to >= mtd->size)
return -EINVAL;
if (ops->datbuf && to + ops->len > mtd->size)
return -EINVAL;
return mtd_write_oob(part->master, to + part->offset, ops);
return part->master->_write_oob(part->master, to + part->offset, ops);
}
static int part_write_user_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len, size_t *retlen, u_char *buf)
{
struct mtd_part *part = PART(mtd);
return mtd_write_user_prot_reg(part->master, from, len, retlen, buf);
return part->master->_write_user_prot_reg(part->master, from, len,
retlen, buf);
}
static int part_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
size_t len)
{
struct mtd_part *part = PART(mtd);
return mtd_lock_user_prot_reg(part->master, from, len);
return part->master->_lock_user_prot_reg(part->master, from, len);
}
static int part_writev(struct mtd_info *mtd, const struct kvec *vecs,
unsigned long count, loff_t to, size_t *retlen)
{
struct mtd_part *part = PART(mtd);
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
return mtd_writev(part->master, vecs, count, to + part->offset,
retlen);
return part->master->_writev(part->master, vecs, count,
to + part->offset, retlen);
}
static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
{
struct mtd_part *part = PART(mtd);
int ret;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (instr->addr >= mtd->size)
return -EINVAL;
instr->addr += part->offset;
ret = mtd_erase(part->master, instr);
ret = part->master->_erase(part->master, instr);
if (ret) {
if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
instr->fail_addr -= part->offset;
@ -262,7 +240,7 @@ static int part_erase(struct mtd_info *mtd, struct erase_info *instr)
void mtd_erase_callback(struct erase_info *instr)
{
if (instr->mtd->erase == part_erase) {
if (instr->mtd->_erase == part_erase) {
struct mtd_part *part = PART(instr->mtd);
if (instr->fail_addr != MTD_FAIL_ADDR_UNKNOWN)
@ -277,52 +255,44 @@ EXPORT_SYMBOL_GPL(mtd_erase_callback);
static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
struct mtd_part *part = PART(mtd);
if ((len + ofs) > mtd->size)
return -EINVAL;
return mtd_lock(part->master, ofs + part->offset, len);
return part->master->_lock(part->master, ofs + part->offset, len);
}
static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
struct mtd_part *part = PART(mtd);
if ((len + ofs) > mtd->size)
return -EINVAL;
return mtd_unlock(part->master, ofs + part->offset, len);
return part->master->_unlock(part->master, ofs + part->offset, len);
}
static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
{
struct mtd_part *part = PART(mtd);
if ((len + ofs) > mtd->size)
return -EINVAL;
return mtd_is_locked(part->master, ofs + part->offset, len);
return part->master->_is_locked(part->master, ofs + part->offset, len);
}
static void part_sync(struct mtd_info *mtd)
{
struct mtd_part *part = PART(mtd);
mtd_sync(part->master);
part->master->_sync(part->master);
}
static int part_suspend(struct mtd_info *mtd)
{
struct mtd_part *part = PART(mtd);
return mtd_suspend(part->master);
return part->master->_suspend(part->master);
}
static void part_resume(struct mtd_info *mtd)
{
struct mtd_part *part = PART(mtd);
mtd_resume(part->master);
part->master->_resume(part->master);
}
static int part_block_isbad(struct mtd_info *mtd, loff_t ofs)
{
struct mtd_part *part = PART(mtd);
if (ofs >= mtd->size)
return -EINVAL;
ofs += part->offset;
return mtd_block_isbad(part->master, ofs);
return part->master->_block_isbad(part->master, ofs);
}
static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
@ -330,12 +300,8 @@ static int part_block_markbad(struct mtd_info *mtd, loff_t ofs)
struct mtd_part *part = PART(mtd);
int res;
if (!(mtd->flags & MTD_WRITEABLE))
return -EROFS;
if (ofs >= mtd->size)
return -EINVAL;
ofs += part->offset;
res = mtd_block_markbad(part->master, ofs);
res = part->master->_block_markbad(part->master, ofs);
if (!res)
mtd->ecc_stats.badblocks++;
return res;
@ -410,54 +376,55 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
*/
slave->mtd.dev.parent = master->dev.parent;
slave->mtd.read = part_read;
slave->mtd.write = part_write;
slave->mtd._read = part_read;
slave->mtd._write = part_write;
if (master->panic_write)
slave->mtd.panic_write = part_panic_write;
if (master->_panic_write)
slave->mtd._panic_write = part_panic_write;
if (master->point && master->unpoint) {
slave->mtd.point = part_point;
slave->mtd.unpoint = part_unpoint;
if (master->_point && master->_unpoint) {
slave->mtd._point = part_point;
slave->mtd._unpoint = part_unpoint;
}
if (master->get_unmapped_area)
slave->mtd.get_unmapped_area = part_get_unmapped_area;
if (master->read_oob)
slave->mtd.read_oob = part_read_oob;
if (master->write_oob)
slave->mtd.write_oob = part_write_oob;
if (master->read_user_prot_reg)
slave->mtd.read_user_prot_reg = part_read_user_prot_reg;
if (master->read_fact_prot_reg)
slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg;
if (master->write_user_prot_reg)
slave->mtd.write_user_prot_reg = part_write_user_prot_reg;
if (master->lock_user_prot_reg)
slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg;
if (master->get_user_prot_info)
slave->mtd.get_user_prot_info = part_get_user_prot_info;
if (master->get_fact_prot_info)
slave->mtd.get_fact_prot_info = part_get_fact_prot_info;
if (master->sync)
slave->mtd.sync = part_sync;
if (!partno && !master->dev.class && master->suspend && master->resume) {
slave->mtd.suspend = part_suspend;
slave->mtd.resume = part_resume;
if (master->_get_unmapped_area)
slave->mtd._get_unmapped_area = part_get_unmapped_area;
if (master->_read_oob)
slave->mtd._read_oob = part_read_oob;
if (master->_write_oob)
slave->mtd._write_oob = part_write_oob;
if (master->_read_user_prot_reg)
slave->mtd._read_user_prot_reg = part_read_user_prot_reg;
if (master->_read_fact_prot_reg)
slave->mtd._read_fact_prot_reg = part_read_fact_prot_reg;
if (master->_write_user_prot_reg)
slave->mtd._write_user_prot_reg = part_write_user_prot_reg;
if (master->_lock_user_prot_reg)
slave->mtd._lock_user_prot_reg = part_lock_user_prot_reg;
if (master->_get_user_prot_info)
slave->mtd._get_user_prot_info = part_get_user_prot_info;
if (master->_get_fact_prot_info)
slave->mtd._get_fact_prot_info = part_get_fact_prot_info;
if (master->_sync)
slave->mtd._sync = part_sync;
if (!partno && !master->dev.class && master->_suspend &&
master->_resume) {
slave->mtd._suspend = part_suspend;
slave->mtd._resume = part_resume;
}
if (master->writev)
slave->mtd.writev = part_writev;
if (master->lock)
slave->mtd.lock = part_lock;
if (master->unlock)
slave->mtd.unlock = part_unlock;
if (master->is_locked)
slave->mtd.is_locked = part_is_locked;
if (master->block_isbad)
slave->mtd.block_isbad = part_block_isbad;
if (master->block_markbad)
slave->mtd.block_markbad = part_block_markbad;
slave->mtd.erase = part_erase;
if (master->_writev)
slave->mtd._writev = part_writev;
if (master->_lock)
slave->mtd._lock = part_lock;
if (master->_unlock)
slave->mtd._unlock = part_unlock;
if (master->_is_locked)
slave->mtd._is_locked = part_is_locked;
if (master->_block_isbad)
slave->mtd._block_isbad = part_block_isbad;
if (master->_block_markbad)
slave->mtd._block_markbad = part_block_markbad;
slave->mtd._erase = part_erase;
slave->master = master;
slave->offset = part->offset;
@ -549,7 +516,8 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
}
slave->mtd.ecclayout = master->ecclayout;
if (master->block_isbad) {
slave->mtd.ecc_strength = master->ecc_strength;
if (master->_block_isbad) {
uint64_t offs = 0;
while (offs < slave->mtd.size) {
@ -761,7 +729,7 @@ int parse_mtd_partitions(struct mtd_info *master, const char **types,
for ( ; ret <= 0 && *types; types++) {
parser = get_partition_parser(*types);
if (!parser && !request_module("%s", *types))
parser = get_partition_parser(*types);
parser = get_partition_parser(*types);
if (!parser)
continue;
ret = (*parser->parse_fn)(master, pparts, data);

21
drivers/mtd/nand/Kconfig
View File

@ -314,6 +314,26 @@ config MTD_NAND_DISKONCHIP_BBTWRITE
load time (assuming you build diskonchip as a module) with the module
parameter "inftl_bbt_write=1".
config MTD_NAND_DOCG4
tristate "Support for DiskOnChip G4 (EXPERIMENTAL)"
depends on EXPERIMENTAL
select BCH
select BITREVERSE
help
Support for diskonchip G4 nand flash, found in various smartphones and
PDAs, among them the Palm Treo680, HTC Prophet and Wizard, Toshiba
Portege G900, Asus P526, and O2 XDA Zinc.
With this driver you will be able to use UBI and create a ubifs on the
device, so you may wish to consider enabling UBI and UBIFS as well.
These devices ship with the Mys/Sandisk SAFTL formatting, for which
there is currently no mtd parser, so you may want to use command line
partitioning to segregate write-protected blocks. On the Treo680, the
first five erase blocks (256KiB each) are write-protected, followed
by the block containing the saftl partition table. This is probably
typical.
config MTD_NAND_SHARPSL
tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
depends on ARCH_PXA
@ -421,7 +441,6 @@ config MTD_NAND_NANDSIM
config MTD_NAND_GPMI_NAND
bool "GPMI NAND Flash Controller driver"
depends on MTD_NAND && (SOC_IMX23 || SOC_IMX28)
select MTD_CMDLINE_PARTS
help
Enables NAND Flash support for IMX23 or IMX28.
The GPMI controller is very powerful, with the help of BCH

1
drivers/mtd/nand/Makefile
View File

@ -19,6 +19,7 @@ obj-$(CONFIG_MTD_NAND_PPCHAMELEONEVB) += ppchameleonevb.o
obj-$(CONFIG_MTD_NAND_S3C2410) += s3c2410.o
obj-$(CONFIG_MTD_NAND_DAVINCI) += davinci_nand.o
obj-$(CONFIG_MTD_NAND_DISKONCHIP) += diskonchip.o
obj-$(CONFIG_MTD_NAND_DOCG4) += docg4.o
obj-$(CONFIG_MTD_NAND_FSMC) += fsmc_nand.o
obj-$(CONFIG_MTD_NAND_H1900) += h1910.o
obj-$(CONFIG_MTD_NAND_RTC_FROM4) += rtc_from4.o

9
drivers/mtd/nand/alauda.c
View File

@ -585,12 +585,13 @@ static int alauda_init_media(struct alauda *al)
mtd->writesize = 1<<card->pageshift;
mtd->type = MTD_NANDFLASH;
mtd->flags = MTD_CAP_NANDFLASH;
mtd->read = alauda_read;
mtd->write = alauda_write;
mtd->erase = alauda_erase;
mtd->block_isbad = alauda_isbad;
mtd->_read = alauda_read;
mtd->_write = alauda_write;
mtd->_erase = alauda_erase;
mtd->_block_isbad = alauda_isbad;
mtd->priv = al;
mtd->owner = THIS_MODULE;
mtd->ecc_strength = 1;
err = mtd_device_register(mtd, NULL, 0);
if (err) {

1
drivers/mtd/nand/atmel_nand.c
View File

@ -603,6 +603,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev)
nand_chip->ecc.hwctl = atmel_nand_hwctl;
nand_chip->ecc.read_page = atmel_nand_read_page;
nand_chip->ecc.bytes = 4;
nand_chip->ecc.strength = 1;
}
nand_chip->chip_delay = 20; /* 20us command delay time */

10
drivers/mtd/nand/bcm_umi_nand.c
View File

@ -475,6 +475,14 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev)
largepage_bbt.options = NAND_BBT_SCAN2NDPAGE;
this->badblock_pattern = &largepage_bbt;
}
/*
* FIXME: ecc strength value of 6 bits per 512 bytes of data is a
* conservative guess, given 13 ecc bytes and using bch alg.
* (Assume Galois field order m=15 to allow a margin of error.)
*/
this->ecc.strength = 6;
#endif
/* Now finish off the scan, now that ecc.layout has been initialized. */
@ -487,7 +495,7 @@ static int __devinit bcm_umi_nand_probe(struct platform_device *pdev)
/* Register the partitions */
board_mtd->name = "bcm_umi-nand";
mtd_device_parse_register(board_mtd, NULL, 0, NULL, 0);
mtd_device_parse_register(board_mtd, NULL, NULL, NULL, 0);
/* Return happy */
return 0;

2
drivers/mtd/nand/bf5xx_nand.c
View File

@ -702,9 +702,11 @@ static int bf5xx_nand_scan(struct mtd_info *mtd)
if (likely(mtd->writesize >= 512)) {
chip->ecc.size = 512;
chip->ecc.bytes = 6;
chip->ecc.strength = 2;
} else {
chip->ecc.size = 256;
chip->ecc.bytes = 3;
chip->ecc.strength = 1;
bfin_write_NFC_CTL(bfin_read_NFC_CTL() & ~(1 << NFC_PG_SIZE_OFFSET));
SSYNC();
}

3
drivers/mtd/nand/cafe_nand.c
View File

@ -783,6 +783,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
cafe->nand.ecc.mode = NAND_ECC_HW_SYNDROME;
cafe->nand.ecc.size = mtd->writesize;
cafe->nand.ecc.bytes = 14;
cafe->nand.ecc.strength = 4;
cafe->nand.ecc.hwctl = (void *)cafe_nand_bug;
cafe->nand.ecc.calculate = (void *)cafe_nand_bug;
cafe->nand.ecc.correct = (void *)cafe_nand_bug;
@ -799,7 +800,7 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, mtd);
mtd->name = "cafe_nand";
mtd_device_parse_register(mtd, part_probes, 0, NULL, 0);
mtd_device_parse_register(mtd, part_probes, NULL, NULL, 0);
goto out;

2
drivers/mtd/nand/cmx270_nand.c
View File

@ -219,7 +219,7 @@ static int __init cmx270_init(void)
}
/* Register the partitions */
ret = mtd_device_parse_register(cmx270_nand_mtd, NULL, 0,
ret = mtd_device_parse_register(cmx270_nand_mtd, NULL, NULL,
partition_info, NUM_PARTITIONS);
if (ret)
goto err_scan;

4
drivers/mtd/nand/cs553x_nand.c
View File

@ -248,6 +248,8 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr)
goto out_ior;
}
this->ecc.strength = 1;
new_mtd->name = kasprintf(GFP_KERNEL, "cs553x_nand_cs%d", cs);
cs553x_mtd[cs] = new_mtd;
@ -313,7 +315,7 @@ static int __init cs553x_init(void)
for (i = 0; i < NR_CS553X_CONTROLLERS; i++) {
if (cs553x_mtd[i]) {
/* If any devices registered, return success. Else the last error. */
mtd_device_parse_register(cs553x_mtd[i], NULL, 0,
mtd_device_parse_register(cs553x_mtd[i], NULL, NULL,
NULL, 0);
err = 0;
}

5
drivers/mtd/nand/davinci_nand.c
View File

@ -641,6 +641,7 @@ static int __init nand_davinci_probe(struct platform_device *pdev)
info->chip.ecc.bytes = 3;
}
info->chip.ecc.size = 512;
info->chip.ecc.strength = pdata->ecc_bits;
break;
default:
ret = -EINVAL;
@ -752,8 +753,8 @@ syndrome_done:
if (ret < 0)
goto err_scan;
ret = mtd_device_parse_register(&info->mtd, NULL, 0,
pdata->parts, pdata->nr_parts);
ret = mtd_device_parse_register(&info->mtd, NULL, NULL, pdata->parts,
pdata->nr_parts);
if (ret < 0)
goto err_scan;

3
drivers/mtd/nand/denali.c
View File

@ -1590,6 +1590,7 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
ECC_15BITS * (denali->mtd.writesize /
ECC_SECTOR_SIZE)))) {
/* if MLC OOB size is large enough, use 15bit ECC*/
denali->nand.ecc.strength = 15;
denali->nand.ecc.layout = &nand_15bit_oob;
denali->nand.ecc.bytes = ECC_15BITS;
iowrite32(15, denali->flash_reg + ECC_CORRECTION);
@ -1600,12 +1601,14 @@ static int denali_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
" contain 8bit ECC correction codes");
goto failed_req_irq;
} else {
denali->nand.ecc.strength = 8;
denali->nand.ecc.layout = &nand_8bit_oob;
denali->nand.ecc.bytes = ECC_8BITS;
iowrite32(8, denali->flash_reg + ECC_CORRECTION);
}
denali->nand.ecc.bytes *= denali->devnum;
denali->nand.ecc.strength *= denali->devnum;
denali->nand.ecc.layout->eccbytes *=
denali->mtd.writesize / ECC_SECTOR_SIZE;
denali->nand.ecc.layout->oobfree[0].offset =

1
drivers/mtd/nand/diskonchip.c
View File

@ -1653,6 +1653,7 @@ static int __init doc_probe(unsigned long physadr)
nand->ecc.mode = NAND_ECC_HW_SYNDROME;
nand->ecc.size = 512;
nand->ecc.bytes = 6;
nand->ecc.strength = 2;
nand->bbt_options = NAND_BBT_USE_FLASH;
doc->physadr = physadr;

1377
drivers/mtd/nand/docg4.c 100644
View File

File diff suppressed because it is too large Load Diff

6
drivers/mtd/nand/fsl_elbc_nand.c
View File

@ -813,6 +813,12 @@ static int fsl_elbc_chip_init(struct fsl_elbc_mtd *priv)
&fsl_elbc_oob_sp_eccm1 : &fsl_elbc_oob_sp_eccm0;
chip->ecc.size = 512;
chip->ecc.bytes = 3;
chip->ecc.strength = 1;
/*
* FIXME: can hardware ecc correct 4 bitflips if page size is
* 2k? Then does hardware report number of corrections for this
* case? If so, ecc_stats reporting needs to be fixed as well.
*/
} else {
/* otherwise fall back to default software ECC */
chip->ecc.mode = NAND_ECC_SOFT;

924
drivers/mtd/nand/fsmc_nand.c
View File

File diff suppressed because it is too large Load Diff

26
drivers/mtd/nand/gpmi-nand/gpmi-lib.c
View File

@ -848,7 +848,10 @@ int gpmi_send_command(struct gpmi_nand_data *this)
sg_init_one(sgl, this->cmd_buffer, this->command_length);
dma_map_sg(this->dev, sgl, 1, DMA_TO_DEVICE);
desc = dmaengine_prep_slave_sg(channel, sgl, 1, DMA_MEM_TO_DEV, 1);
desc = dmaengine_prep_slave_sg(channel,
sgl, 1, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
pr_err("step 2 error\n");
return -1;
@ -889,7 +892,8 @@ int gpmi_send_data(struct gpmi_nand_data *this)
/* [2] send DMA request */
prepare_data_dma(this, DMA_TO_DEVICE);
desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
1, DMA_MEM_TO_DEV, 1);
1, DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
pr_err("step 2 error\n");
return -1;
@ -925,7 +929,8 @@ int gpmi_read_data(struct gpmi_nand_data *this)
/* [2] : send DMA request */
prepare_data_dma(this, DMA_FROM_DEVICE);
desc = dmaengine_prep_slave_sg(channel, &this->data_sgl,
1, DMA_DEV_TO_MEM, 1);
1, DMA_DEV_TO_MEM,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
pr_err("step 2 error\n");
return -1;
@ -970,8 +975,10 @@ int gpmi_send_page(struct gpmi_nand_data *this,
pio[4] = payload;
pio[5] = auxiliary;
desc = dmaengine_prep_slave_sg(channel, (struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE, 0);
desc = dmaengine_prep_slave_sg(channel,
(struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE,
DMA_CTRL_ACK);
if (!desc) {
pr_err("step 2 error\n");
return -1;
@ -1035,7 +1042,8 @@ int gpmi_read_page(struct gpmi_nand_data *this,
pio[5] = auxiliary;
desc = dmaengine_prep_slave_sg(channel,
(struct scatterlist *)pio,
ARRAY_SIZE(pio), DMA_TRANS_NONE, 1);
ARRAY_SIZE(pio), DMA_TRANS_NONE,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
pr_err("step 2 error\n");
return -1;
@ -1052,9 +1060,11 @@ int gpmi_read_page(struct gpmi_nand_data *this,
| BF_GPMI_CTRL0_ADDRESS(address)
| BF_GPMI_CTRL0_XFER_COUNT(geo->page_size);
pio[1] = 0;
pio[2] = 0; /* clear GPMI_HW_GPMI_ECCCTRL, disable the BCH. */
desc = dmaengine_prep_slave_sg(channel,
(struct scatterlist *)pio, 2,
DMA_TRANS_NONE, 1);
(struct scatterlist *)pio, 3,
DMA_TRANS_NONE,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc) {
pr_err("step 3 error\n");
return -1;

14
drivers/mtd/nand/gpmi-nand/gpmi-nand.c
View File

@ -1124,7 +1124,7 @@ static int gpmi_block_markbad(struct mtd_info *mtd, loff_t ofs)
chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
/* Do we have a flash based bad block table ? */
if (chip->options & NAND_BBT_USE_FLASH)
if (chip->bbt_options & NAND_BBT_USE_FLASH)
ret = nand_update_bbt(mtd, ofs);
else {
chipnr = (int)(ofs >> chip->chip_shift);
@ -1155,7 +1155,7 @@ static int gpmi_block_markbad(struct mtd_info *mtd, loff_t ofs)
return ret;
}
static int __devinit nand_boot_set_geometry(struct gpmi_nand_data *this)
static int nand_boot_set_geometry(struct gpmi_nand_data *this)
{
struct boot_rom_geometry *geometry = &this->rom_geometry;
@ -1182,7 +1182,7 @@ static int __devinit nand_boot_set_geometry(struct gpmi_nand_data *this)
}
static const char *fingerprint = "STMP";
static int __devinit mx23_check_transcription_stamp(struct gpmi_nand_data *this)
static int mx23_check_transcription_stamp(struct gpmi_nand_data *this)
{
struct boot_rom_geometry *rom_geo = &this->rom_geometry;
struct device *dev = this->dev;
@ -1239,7 +1239,7 @@ static int __devinit mx23_check_transcription_stamp(struct gpmi_nand_data *this)
}
/* Writes a transcription stamp. */
static int __devinit mx23_write_transcription_stamp(struct gpmi_nand_data *this)
static int mx23_write_transcription_stamp(struct gpmi_nand_data *this)
{
struct device *dev = this->dev;
struct boot_rom_geometry *rom_geo = &this->rom_geometry;
@ -1322,7 +1322,7 @@ static int __devinit mx23_write_transcription_stamp(struct gpmi_nand_data *this)
return 0;
}
static int __devinit mx23_boot_init(struct gpmi_nand_data *this)
static int mx23_boot_init(struct gpmi_nand_data *this)
{
struct device *dev = this->dev;
struct nand_chip *chip = &this->nand;
@ -1391,7 +1391,7 @@ static int __devinit mx23_boot_init(struct gpmi_nand_data *this)
return 0;
}
static int __devinit nand_boot_init(struct gpmi_nand_data *this)
static int nand_boot_init(struct gpmi_nand_data *this)
{
nand_boot_set_geometry(this);
@ -1401,7 +1401,7 @@ static int __devinit nand_boot_init(struct gpmi_nand_data *this)
return 0;
}
static int __devinit gpmi_set_geometry(struct gpmi_nand_data *this)
static int gpmi_set_geometry(struct gpmi_nand_data *this)
{
int ret;

2
drivers/mtd/nand/gpmi-nand/gpmi-nand.h
View File

@ -20,7 +20,7 @@
#include <linux/mtd/nand.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <mach/dma.h>
#include <linux/fsl/mxs-dma.h>
struct resources {
void *gpmi_regs;

4
drivers/mtd/nand/h1910.c
View File

@ -135,8 +135,8 @@ static int __init h1910_init(void)
}
/* Register the partitions */
mtd_device_parse_register(h1910_nand_mtd, NULL, 0,
partition_info, NUM_PARTITIONS);
mtd_device_parse_register(h1910_nand_mtd, NULL, NULL, partition_info,
NUM_PARTITIONS);
/* Return happy */
return 0;

11
drivers/mtd/nand/jz4740_nand.c
View File

@ -332,6 +332,11 @@ static int __devinit jz_nand_probe(struct platform_device *pdev)
chip->ecc.mode = NAND_ECC_HW_OOB_FIRST;
chip->ecc.size = 512;
chip->ecc.bytes = 9;
chip->ecc.strength = 2;
/*
* FIXME: ecc_strength value of 2 bits per 512 bytes of data is a
* conservative guess, given 9 ecc bytes and reed-solomon alg.
*/
if (pdata)
chip->ecc.layout = pdata->ecc_layout;
@ -367,9 +372,9 @@ static int __devinit jz_nand_probe(struct platform_device *pdev)
goto err_gpio_free;
}
ret = mtd_device_parse_register(mtd, NULL, 0,
pdata ? pdata->partitions : NULL,
pdata ? pdata->num_partitions : 0);
ret = mtd_device_parse_register(mtd, NULL, NULL,
pdata ? pdata->partitions : NULL,
pdata ? pdata->num_partitions : 0);
if (ret) {
dev_err(&pdev->dev, "Failed to add mtd device\n");

11
drivers/mtd/nand/mxc_nand.c
View File

@ -1225,9 +1225,16 @@ static int __init mxcnd_probe(struct platform_device *pdev)
goto escan;
}
if (this->ecc.mode == NAND_ECC_HW) {
if (nfc_is_v1())
this->ecc.strength = 1;
else
this->ecc.strength = (host->eccsize == 4) ? 4 : 8;
}
/* Register the partitions */
mtd_device_parse_register(mtd, part_probes, 0,
pdata->parts, pdata->nr_parts);
mtd_device_parse_register(mtd, part_probes, NULL, pdata->parts,
pdata->nr_parts);
platform_set_drvdata(pdev, host);

194
drivers/mtd/nand/nand_base.c
View File

@ -123,12 +123,6 @@ static int check_offs_len(struct mtd_info *mtd,
ret = -EINVAL;
}
/* Do not allow past end of device */
if (ofs + len > mtd->size) {
pr_debug("%s: past end of device\n", __func__);
ret = -EINVAL;
}
return ret;
}
@ -338,7 +332,7 @@ static int nand_verify_buf16(struct mtd_info *mtd, const uint8_t *buf, int len)
*/
static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
{
int page, chipnr, res = 0;
int page, chipnr, res = 0, i = 0;
struct nand_chip *chip = mtd->priv;
u16 bad;
@ -356,23 +350,29 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
chip->select_chip(mtd, chipnr);
}
if (chip->options & NAND_BUSWIDTH_16) {
chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos & 0xFE,
page);
bad = cpu_to_le16(chip->read_word(mtd));
if (chip->badblockpos & 0x1)
bad >>= 8;
else
bad &= 0xFF;
} else {
chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos, page);
bad = chip->read_byte(mtd);
}
do {
if (chip->options & NAND_BUSWIDTH_16) {
chip->cmdfunc(mtd, NAND_CMD_READOOB,
chip->badblockpos & 0xFE, page);
bad = cpu_to_le16(chip->read_word(mtd));
if (chip->badblockpos & 0x1)
bad >>= 8;
else
bad &= 0xFF;
} else {
chip->cmdfunc(mtd, NAND_CMD_READOOB, chip->badblockpos,
page);
bad = chip->read_byte(mtd);
}
if (likely(chip->badblockbits == 8))
res = bad != 0xFF;
else
res = hweight8(bad) < chip->badblockbits;
if (likely(chip->badblockbits == 8))
res = bad != 0xFF;
else
res = hweight8(bad) < chip->badblockbits;
ofs += mtd->writesize;
page = (int)(ofs >> chip->page_shift) & chip->pagemask;
i++;
} while (!res && i < 2 && (chip->bbt_options & NAND_BBT_SCAN2NDPAGE));
if (getchip)
nand_release_device(mtd);
@ -386,51 +386,79 @@ static int nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
* @ofs: offset from device start
*
* This is the default implementation, which can be overridden by a hardware
* specific driver.
* specific driver. We try operations in the following order, according to our
* bbt_options (NAND_BBT_NO_OOB_BBM and NAND_BBT_USE_FLASH):
* (1) erase the affected block, to allow OOB marker to be written cleanly
* (2) update in-memory BBT
* (3) write bad block marker to OOB area of affected block
* (4) update flash-based BBT
* Note that we retain the first error encountered in (3) or (4), finish the
* procedures, and dump the error in the end.
*/
static int nand_default_block_markbad(struct mtd_info *mtd, loff_t ofs)
{
struct nand_chip *chip = mtd->priv;
uint8_t buf[2] = { 0, 0 };
int block, ret, i = 0;
int block, res, ret = 0, i = 0;
int write_oob = !(chip->bbt_options & NAND_BBT_NO_OOB_BBM);
if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
ofs += mtd->erasesize - mtd->writesize;
if (write_oob) {
struct erase_info einfo;
/* Attempt erase before marking OOB */
memset(&einfo, 0, sizeof(einfo));
einfo.mtd = mtd;
einfo.addr = ofs;
einfo.len = 1 << chip->phys_erase_shift;
nand_erase_nand(mtd, &einfo, 0);
}
/* Get block number */
block = (int)(ofs >> chip->bbt_erase_shift);
/* Mark block bad in memory-based BBT */
if (chip->bbt)
chip->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
/* Do we have a flash based bad block table? */
if (chip->bbt_options & NAND_BBT_USE_FLASH)
ret = nand_update_bbt(mtd, ofs);
else {
/* Write bad block marker to OOB */
if (write_oob) {
struct mtd_oob_ops ops;
loff_t wr_ofs = ofs;
nand_get_device(chip, mtd, FL_WRITING);
/*
* Write to first two pages if necessary. If we write to more
* than one location, the first error encountered quits the
* procedure. We write two bytes per location, so we dont have
* to mess with 16 bit access.
*/
ops.len = ops.ooblen = 2;
ops.datbuf = NULL;
ops.oobbuf = buf;
ops.ooboffs = chip->badblockpos & ~0x01;
ops.ooboffs = chip->badblockpos;
if (chip->options & NAND_BUSWIDTH_16) {
ops.ooboffs &= ~0x01;
ops.len = ops.ooblen = 2;
} else {
ops.len = ops.ooblen = 1;
}
ops.mode = MTD_OPS_PLACE_OOB;
/* Write to first/last page(s) if necessary */
if (chip->bbt_options & NAND_BBT_SCANLASTPAGE)
wr_ofs += mtd->erasesize - mtd->writesize;
do {
ret = nand_do_write_oob(mtd, ofs, &ops);
res = nand_do_write_oob(mtd, wr_ofs, &ops);
if (!ret)
ret = res;
i++;
ofs += mtd->writesize;
} while (!ret && (chip->bbt_options & NAND_BBT_SCAN2NDPAGE) &&
i < 2);
wr_ofs += mtd->writesize;
} while ((chip->bbt_options & NAND_BBT_SCAN2NDPAGE) && i < 2);
nand_release_device(mtd);
}
/* Update flash-based bad block table */
if (chip->bbt_options & NAND_BBT_USE_FLASH) {
res = nand_update_bbt(mtd, ofs);
if (!ret)
ret = res;
}
if (!ret)
mtd->ecc_stats.badblocks++;
@ -1586,25 +1614,14 @@ static int nand_read(struct mtd_info *mtd, loff_t from, size_t len,
struct mtd_oob_ops ops;
int ret;
/* Do not allow reads past end of device */
if ((from + len) > mtd->size)
return -EINVAL;
if (!len)
return 0;
nand_get_device(chip, mtd, FL_READING);
ops.len = len;
ops.datbuf = buf;
ops.oobbuf = NULL;
ops.mode = 0;
ret = nand_do_read_ops(mtd, from, &ops);
*retlen = ops.retlen;
nand_release_device(mtd);
return ret;
}
@ -2293,12 +2310,6 @@ static int panic_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
struct mtd_oob_ops ops;
int ret;
/* Do not allow reads past end of device */
if ((to + len) > mtd->size)
return -EINVAL;
if (!len)
return 0;
/* Wait for the device to get ready */
panic_nand_wait(mtd, chip, 400);
@ -2333,25 +2344,14 @@ static int nand_write(struct mtd_info *mtd, loff_t to, size_t len,
struct mtd_oob_ops ops;
int ret;
/* Do not allow reads past end of device */
if ((to + len) > mtd->size)
return -EINVAL;
if (!len)
return 0;
nand_get_device(chip, mtd, FL_WRITING);
ops.len = len;
ops.datbuf = (uint8_t *)buf;
ops.oobbuf = NULL;
ops.mode = 0;
ret = nand_do_write_ops(mtd, to, &ops);
*retlen = ops.retlen;
nand_release_device(mtd);
return ret;
}
@ -2550,8 +2550,6 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
if (check_offs_len(mtd, instr->addr, instr->len))
return -EINVAL;
instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
/* Grab the lock and see if the device is available */
nand_get_device(chip, mtd, FL_ERASING);
@ -2715,10 +2713,6 @@ static void nand_sync(struct mtd_info *mtd)
*/
static int nand_block_isbad(struct mtd_info *mtd, loff_t offs)
{
/* Check for invalid offset */
if (offs > mtd->size)
return -EINVAL;
return nand_block_checkbad(mtd, offs, 1, 0);
}
@ -2857,7 +2851,6 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
chip->read_byte(mtd) != 'F' || chip->read_byte(mtd) != 'I')
return 0;
pr_info("ONFI flash detected\n");
chip->cmdfunc(mtd, NAND_CMD_PARAM, 0, -1);
for (i = 0; i < 3; i++) {
chip->read_buf(mtd, (uint8_t *)p, sizeof(*p));
@ -2898,7 +2891,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
mtd->writesize = le32_to_cpu(p->byte_per_page);
mtd->erasesize = le32_to_cpu(p->pages_per_block) * mtd->writesize;
mtd->oobsize = le16_to_cpu(p->spare_bytes_per_page);
chip->chipsize = (uint64_t)le32_to_cpu(p->blocks_per_lun) * mtd->erasesize;
chip->chipsize = le32_to_cpu(p->blocks_per_lun);
chip->chipsize *= (uint64_t)mtd->erasesize * p->lun_count;
*busw = 0;
if (le16_to_cpu(p->features) & 1)
*busw = NAND_BUSWIDTH_16;
@ -2907,6 +2901,7 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
chip->options |= (NAND_NO_READRDY |
NAND_NO_AUTOINCR) & NAND_CHIPOPTIONS_MSK;
pr_info("ONFI flash detected\n");
return 1;
}
@ -3238,6 +3233,10 @@ int nand_scan_tail(struct mtd_info *mtd)
int i;
struct nand_chip *chip = mtd->priv;
/* New bad blocks should be marked in OOB, flash-based BBT, or both */
BUG_ON((chip->bbt_options & NAND_BBT_NO_OOB_BBM) &&
!(chip->bbt_options & NAND_BBT_USE_FLASH));
if (!(chip->options & NAND_OWN_BUFFERS))
chip->buffers = kmalloc(sizeof(*chip->buffers), GFP_KERNEL);
if (!chip->buffers)
@ -3350,6 +3349,7 @@ int nand_scan_tail(struct mtd_info *mtd)
if (!chip->ecc.size)
chip->ecc.size = 256;
chip->ecc.bytes = 3;
chip->ecc.strength = 1;
break;
case NAND_ECC_SOFT_BCH:
@ -3384,6 +3384,8 @@ int nand_scan_tail(struct mtd_info *mtd)
pr_warn("BCH ECC initialization failed!\n");
BUG();
}
chip->ecc.strength =
chip->ecc.bytes*8 / fls(8*chip->ecc.size);
break;
case NAND_ECC_NONE:
@ -3397,6 +3399,7 @@ int nand_scan_tail(struct mtd_info *mtd)
chip->ecc.write_oob = nand_write_oob_std;
chip->ecc.size = mtd->writesize;
chip->ecc.bytes = 0;
chip->ecc.strength = 0;
break;
default:
@ -3461,25 +3464,26 @@ int nand_scan_tail(struct mtd_info *mtd)
mtd->type = MTD_NANDFLASH;
mtd->flags = (chip->options & NAND_ROM) ? MTD_CAP_ROM :
MTD_CAP_NANDFLASH;
mtd->erase = nand_erase;
mtd->point = NULL;
mtd->unpoint = NULL;
mtd->read = nand_read;
mtd->write = nand_write;
mtd->panic_write = panic_nand_write;
mtd->read_oob = nand_read_oob;
mtd->write_oob = nand_write_oob;
mtd->sync = nand_sync;
mtd->lock = NULL;
mtd->unlock = NULL;
mtd->suspend = nand_suspend;
mtd->resume = nand_resume;
mtd->block_isbad = nand_block_isbad;
mtd->block_markbad = nand_block_markbad;
mtd->_erase = nand_erase;
mtd->_point = NULL;
mtd->_unpoint = NULL;
mtd->_read = nand_read;
mtd->_write = nand_write;
mtd->_panic_write = panic_nand_write;
mtd->_read_oob = nand_read_oob;
mtd->_write_oob = nand_write_oob;
mtd->_sync = nand_sync;
mtd->_lock = NULL;
mtd->_unlock = NULL;
mtd->_suspend = nand_suspend;
mtd->_resume = nand_resume;
mtd->_block_isbad = nand_block_isbad;
mtd->_block_markbad = nand_block_markbad;
mtd->writebufsize = mtd->writesize;
/* propagate ecc.layout to mtd_info */
/* propagate ecc info to mtd_info */
mtd->ecclayout = chip->ecc.layout;
mtd->ecc_strength = chip->ecc.strength * chip->ecc.steps;
/* Check, if we should skip the bad block table scan */
if (chip->options & NAND_SKIP_BBTSCAN)

1
drivers/mtd/nand/ndfc.c
View File

@ -179,6 +179,7 @@ static int ndfc_chip_init(struct ndfc_controller *ndfc,
chip->ecc.mode = NAND_ECC_HW;
chip->ecc.size = 256;
chip->ecc.bytes = 3;
chip->ecc.strength = 1;
chip->priv = ndfc;
ndfc->mtd.priv = chip;

5
drivers/mtd/nand/omap2.c
View File

@ -1058,6 +1058,7 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
(pdata->ecc_opt == OMAP_ECC_HAMMING_CODE_HW_ROMCODE)) {
info->nand.ecc.bytes = 3;
info->nand.ecc.size = 512;
info->nand.ecc.strength = 1;
info->nand.ecc.calculate = omap_calculate_ecc;
info->nand.ecc.hwctl = omap_enable_hwecc;
info->nand.ecc.correct = omap_correct_data;
@ -1101,8 +1102,8 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
goto out_release_mem_region;
}
mtd_device_parse_register(&info->mtd, NULL, 0,
pdata->parts, pdata->nr_parts);
mtd_device_parse_register(&info->mtd, NULL, NULL, pdata->parts,
pdata->nr_parts);
platform_set_drvdata(pdev, &info->mtd);

4
drivers/mtd/nand/orion_nand.c
View File

@ -129,8 +129,8 @@ static int __init orion_nand_probe(struct platform_device *pdev)
}
mtd->name = "orion_nand";
ret = mtd_device_parse_register(mtd, NULL, 0,
board->parts, board->nr_parts);
ret = mtd_device_parse_register(mtd, NULL, NULL, board->parts,
board->nr_parts);
if (ret) {
nand_release(mtd);
goto no_dev;

5
drivers/mtd/nand/plat_nand.c
View File

@ -99,8 +99,9 @@ static int __devinit plat_nand_probe(struct platform_device *pdev)
}
err = mtd_device_parse_register(&data->mtd,
pdata->chip.part_probe_types, 0,
pdata->chip.partitions, pdata->chip.nr_partitions);
pdata->chip.part_probe_types, NULL,
pdata->chip.partitions,
pdata->chip.nr_partitions);
if (!err)
return err;

18
drivers/mtd/nand/ppchameleonevb.c
View File

@ -275,11 +275,10 @@ static int __init ppchameleonevb_init(void)
ppchameleon_mtd->name = "ppchameleon-nand";
/* Register the partitions */
mtd_device_parse_register(ppchameleon_mtd, NULL, 0,
ppchameleon_mtd->size == NAND_SMALL_SIZE ?
partition_info_me :
partition_info_hi,
NUM_PARTITIONS);
mtd_device_parse_register(ppchameleon_mtd, NULL, NULL,
ppchameleon_mtd->size == NAND_SMALL_SIZE ?
partition_info_me : partition_info_hi,
NUM_PARTITIONS);
nand_evb_init:
/****************************
@ -365,11 +364,10 @@ static int __init ppchameleonevb_init(void)
ppchameleonevb_mtd->name = NAND_EVB_MTD_NAME;
/* Register the partitions */
mtd_device_parse_register(ppchameleonevb_mtd, NULL, 0,
ppchameleon_mtd->size == NAND_SMALL_SIZE ?
partition_info_me :
partition_info_hi,
NUM_PARTITIONS);
mtd_device_parse_register(ppchameleonevb_mtd, NULL, NULL,
ppchameleon_mtd->size == NAND_SMALL_SIZE ?
partition_info_me : partition_info_hi,
NUM_PARTITIONS);
/* Return happy */
return 0;

6
drivers/mtd/nand/pxa3xx_nand.c
View File

@ -1002,6 +1002,7 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
KEEP_CONFIG:
chip->ecc.mode = NAND_ECC_HW;
chip->ecc.size = host->page_size;
chip->ecc.strength = 1;
chip->options = NAND_NO_AUTOINCR;
chip->options |= NAND_NO_READRDY;
@ -1228,8 +1229,9 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
continue;
}
ret = mtd_device_parse_register(info->host[cs]->mtd, NULL, 0,
pdata->parts[cs], pdata->nr_parts[cs]);
ret = mtd_device_parse_register(info->host[cs]->mtd, NULL,
NULL, pdata->parts[cs],
pdata->nr_parts[cs]);
if (!ret)
probe_success = 1;
}

1
drivers/mtd/nand/r852.c
View File

@ -891,6 +891,7 @@ int r852_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
chip->ecc.mode = NAND_ECC_HW_SYNDROME;
chip->ecc.size = R852_DMA_LEN;
chip->ecc.bytes = SM_OOB_SIZE;
chip->ecc.strength = 2;
chip->ecc.hwctl = r852_ecc_hwctl;
chip->ecc.calculate = r852_ecc_calculate;
chip->ecc.correct = r852_ecc_correct;

1
drivers/mtd/nand/rtc_from4.c
View File

@ -527,6 +527,7 @@ static int __init rtc_from4_init(void)
this->ecc.mode = NAND_ECC_HW_SYNDROME;
this->ecc.size = 512;
this->ecc.bytes = 8;
this->ecc.strength = 3;
/* return the status of extra status and ECC checks */
this->errstat = rtc_from4_errstat;
/* set the nand_oobinfo to support FPGA H/W error detection */

5
drivers/mtd/nand/s3c2410.c
View File

@ -751,8 +751,8 @@ static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info,
if (set)
mtd->mtd.name = set->name;
return mtd_device_parse_register(&mtd->mtd, NULL, 0,
set->partitions, set->nr_partitions);
return mtd_device_parse_register(&mtd->mtd, NULL, NULL,
set->partitions, set->nr_partitions);
}
/**
@ -823,6 +823,7 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
chip->ecc.calculate = s3c2410_nand_calculate_ecc;
chip->ecc.correct = s3c2410_nand_correct_data;
chip->ecc.mode = NAND_ECC_HW;
chip->ecc.strength = 1;
switch (info->cpu_type) {
case TYPE_S3C2410:

110
drivers/mtd/nand/sh_flctl.c
View File

@ -26,6 +26,7 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/mtd/mtd.h>
@ -283,7 +284,7 @@ static void write_fiforeg(struct sh_flctl *flctl, int rlen, int offset)
static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_val)
{
struct sh_flctl *flctl = mtd_to_flctl(mtd);
uint32_t flcmncr_val = readl(FLCMNCR(flctl)) & ~SEL_16BIT;
uint32_t flcmncr_val = flctl->flcmncr_base & ~SEL_16BIT;
uint32_t flcmdcr_val, addr_len_bytes = 0;
/* Set SNAND bit if page size is 2048byte */
@ -303,6 +304,7 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va
break;
case NAND_CMD_READ0:
case NAND_CMD_READOOB:
case NAND_CMD_RNDOUT:
addr_len_bytes = flctl->rw_ADRCNT;
flcmdcr_val |= CDSRC_E;
if (flctl->chip.options & NAND_BUSWIDTH_16)
@ -320,6 +322,7 @@ static void set_cmd_regs(struct mtd_info *mtd, uint32_t cmd, uint32_t flcmcdr_va
break;
case NAND_CMD_READID:
flcmncr_val &= ~SNAND_E;
flcmdcr_val |= CDSRC_E;
addr_len_bytes = ADRCNT_1;
break;
case NAND_CMD_STATUS:
@ -513,6 +516,8 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
struct sh_flctl *flctl = mtd_to_flctl(mtd);
uint32_t read_cmd = 0;
pm_runtime_get_sync(&flctl->pdev->dev);
flctl->read_bytes = 0;
if (command != NAND_CMD_PAGEPROG)
flctl->index = 0;
@ -525,7 +530,6 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
execmd_read_page_sector(mtd, page_addr);
break;
}
empty_fifo(flctl);
if (flctl->page_size)
set_cmd_regs(mtd, command, (NAND_CMD_READSTART << 8)
| command);
@ -547,7 +551,6 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
break;
}
empty_fifo(flctl);
if (flctl->page_size) {
set_cmd_regs(mtd, command, (NAND_CMD_READSTART << 8)
| NAND_CMD_READ0);
@ -559,15 +562,35 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
flctl->read_bytes = mtd->oobsize;
goto read_normal_exit;
case NAND_CMD_READID:
empty_fifo(flctl);
set_cmd_regs(mtd, command, command);
set_addr(mtd, 0, 0);
case NAND_CMD_RNDOUT:
if (flctl->hwecc)
break;
flctl->read_bytes = 4;
if (flctl->page_size)
set_cmd_regs(mtd, command, (NAND_CMD_RNDOUTSTART << 8)
| command);
else
set_cmd_regs(mtd, command, command);
set_addr(mtd, column, 0);
flctl->read_bytes = mtd->writesize + mtd->oobsize - column;
goto read_normal_exit;
case NAND_CMD_READID:
set_cmd_regs(mtd, command, command);
/* READID is always performed using an 8-bit bus */
if (flctl->chip.options & NAND_BUSWIDTH_16)
column <<= 1;
set_addr(mtd, column, 0);
flctl->read_bytes = 8;
writel(flctl->read_bytes, FLDTCNTR(flctl)); /* set read size */
empty_fifo(flctl);
start_translation(flctl);
read_datareg(flctl, 0); /* read and end */
read_fiforeg(flctl, flctl->read_bytes, 0);
wait_completion(flctl);
break;
case NAND_CMD_ERASE1:
@ -650,29 +673,55 @@ static void flctl_cmdfunc(struct mtd_info *mtd, unsigned int command,
default:
break;
}
return;
goto runtime_exit;
read_normal_exit:
writel(flctl->read_bytes, FLDTCNTR(flctl)); /* set read size */
empty_fifo(flctl);
start_translation(flctl);
read_fiforeg(flctl, flctl->read_bytes, 0);
wait_completion(flctl);
runtime_exit:
pm_runtime_put_sync(&flctl->pdev->dev);
return;
}
static void flctl_select_chip(struct mtd_info *mtd, int chipnr)
{
struct sh_flctl *flctl = mtd_to_flctl(mtd);
uint32_t flcmncr_val = readl(FLCMNCR(flctl));
int ret;
switch (chipnr) {
case -1:
flcmncr_val &= ~CE0_ENABLE;
writel(flcmncr_val, FLCMNCR(flctl));
flctl->flcmncr_base &= ~CE0_ENABLE;
pm_runtime_get_sync(&flctl->pdev->dev);
writel(flctl->flcmncr_base, FLCMNCR(flctl));
if (flctl->qos_request) {
dev_pm_qos_remove_request(&flctl->pm_qos);
flctl->qos_request = 0;
}
pm_runtime_put_sync(&flctl->pdev->dev);
break;
case 0:
flcmncr_val |= CE0_ENABLE;
writel(flcmncr_val, FLCMNCR(flctl));
flctl->flcmncr_base |= CE0_ENABLE;
if (!flctl->qos_request) {
ret = dev_pm_qos_add_request(&flctl->pdev->dev,
&flctl->pm_qos, 100);
if (ret < 0)
dev_err(&flctl->pdev->dev,
"PM QoS request failed: %d\n", ret);
flctl->qos_request = 1;
}
if (flctl->holden) {
pm_runtime_get_sync(&flctl->pdev->dev);
writel(HOLDEN, FLHOLDCR(flctl));
pm_runtime_put_sync(&flctl->pdev->dev);
}
break;
default:
BUG();
@ -730,11 +779,6 @@ static int flctl_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
return 0;
}
static void flctl_register_init(struct sh_flctl *flctl, unsigned long val)
{
writel(val, FLCMNCR(flctl));
}
static int flctl_chip_init_tail(struct mtd_info *mtd)
{
struct sh_flctl *flctl = mtd_to_flctl(mtd);
@ -781,13 +825,13 @@ static int flctl_chip_init_tail(struct mtd_info *mtd)
chip->ecc.size = 512;
chip->ecc.bytes = 10;
chip->ecc.strength = 4;
chip->ecc.read_page = flctl_read_page_hwecc;
chip->ecc.write_page = flctl_write_page_hwecc;
chip->ecc.mode = NAND_ECC_HW;
/* 4 symbols ECC enabled */
writel(readl(FLCMNCR(flctl)) | _4ECCEN | ECCPOS2 | ECCPOS_02,
FLCMNCR(flctl));
flctl->flcmncr_base |= _4ECCEN | ECCPOS2 | ECCPOS_02;
} else {
chip->ecc.mode = NAND_ECC_SOFT;
}
@ -819,13 +863,13 @@ static int __devinit flctl_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get I/O memory\n");
goto err;
goto err_iomap;
}
flctl->reg = ioremap(res->start, resource_size(res));
if (flctl->reg == NULL) {
dev_err(&pdev->dev, "failed to remap I/O memory\n");
goto err;
goto err_iomap;
}
platform_set_drvdata(pdev, flctl);
@ -833,9 +877,9 @@ static int __devinit flctl_probe(struct platform_device *pdev)
nand = &flctl->chip;
flctl_mtd->priv = nand;
flctl->pdev = pdev;
flctl->flcmncr_base = pdata->flcmncr_val;
flctl->hwecc = pdata->has_hwecc;
flctl_register_init(flctl, pdata->flcmncr_val);
flctl->holden = pdata->use_holden;
nand->options = NAND_NO_AUTOINCR;
@ -855,23 +899,28 @@ static int __devinit flctl_probe(struct platform_device *pdev)
nand->read_word = flctl_read_word;
}
pm_runtime_enable(&pdev->dev);
pm_runtime_resume(&pdev->dev);
ret = nand_scan_ident(flctl_mtd, 1, NULL);
if (ret)
goto err;
goto err_chip;
ret = flctl_chip_init_tail(flctl_mtd);
if (ret)
goto err;
goto err_chip;
ret = nand_scan_tail(flctl_mtd);
if (ret)
goto err;
goto err_chip;
mtd_device_register(flctl_mtd, pdata->parts, pdata->nr_parts);
return 0;
err:
err_chip:
pm_runtime_disable(&pdev->dev);
err_iomap:
kfree(flctl);
return ret;
}
@ -881,6 +930,7 @@ static int __devexit flctl_remove(struct platform_device *pdev)
struct sh_flctl *flctl = platform_get_drvdata(pdev);
nand_release(&flctl->mtd);
pm_runtime_disable(&pdev->dev);
kfree(flctl);
return 0;

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