summaryrefslogtreecommitdiff
path: root/drivers/mtd
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/devices/docg3.c16
-rw-r--r--drivers/mtd/mtdchar.c2
-rw-r--r--drivers/mtd/nand/ams-delta.c17
-rw-r--r--drivers/mtd/nand/autcpu12.c10
-rw-r--r--drivers/mtd/nand/gpmi-nand/gpmi-nand.c9
-rw-r--r--drivers/mtd/nand/h1910.c2
-rw-r--r--drivers/mtd/nand/mxc_nand.c6
-rw-r--r--drivers/mtd/nand/orion_nand.c65
-rw-r--r--drivers/mtd/ubi/Kconfig8
-rw-r--r--drivers/mtd/ubi/Makefile5
-rw-r--r--drivers/mtd/ubi/attach.c (renamed from drivers/mtd/ubi/scan.c)970
-rw-r--r--drivers/mtd/ubi/build.c85
-rw-r--r--drivers/mtd/ubi/cdev.c36
-rw-r--r--drivers/mtd/ubi/debug.c137
-rw-r--r--drivers/mtd/ubi/debug.h98
-rw-r--r--drivers/mtd/ubi/eba.c68
-rw-r--r--drivers/mtd/ubi/gluebi.c2
-rw-r--r--drivers/mtd/ubi/io.c211
-rw-r--r--drivers/mtd/ubi/kapi.c61
-rw-r--r--drivers/mtd/ubi/scan.h174
-rw-r--r--drivers/mtd/ubi/ubi-media.h8
-rw-r--r--drivers/mtd/ubi/ubi.h179
-rw-r--r--drivers/mtd/ubi/upd.c16
-rw-r--r--drivers/mtd/ubi/vmt.c62
-rw-r--r--drivers/mtd/ubi/vtbl.c228
-rw-r--r--drivers/mtd/ubi/wl.c260
26 files changed, 1292 insertions, 1443 deletions
diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c
index 8272c02668d..50aa90aa7a7 100644
--- a/drivers/mtd/devices/docg3.c
+++ b/drivers/mtd/devices/docg3.c
@@ -383,7 +383,7 @@ static void doc_set_device_id(struct docg3 *docg3, int id)
* leveling counters are stored. To access this last area of 4 bytes, a special
* mode must be input to the flash ASIC.
*
- * Returns 0 if no error occured, -EIO else.
+ * Returns 0 if no error occurred, -EIO else.
*/
static int doc_set_extra_page_mode(struct docg3 *docg3)
{
@@ -681,7 +681,7 @@ out:
* - one read of 512 bytes at offset 0
* - one read of 512 bytes at offset 512 + 16
*
- * Returns 0 if successful, -EIO if a read error occured.
+ * Returns 0 if successful, -EIO if a read error occurred.
*/
static int doc_read_page_prepare(struct docg3 *docg3, int block0, int block1,
int page, int offset)
@@ -839,7 +839,7 @@ static void calc_block_sector(loff_t from, int *block0, int *block1, int *page,
*
* Reads flash memory OOB area of pages.
*
- * Returns 0 if read successfull, of -EIO, -EINVAL if an error occured
+ * Returns 0 if read successful, of -EIO, -EINVAL if an error occurred
*/
static int doc_read_oob(struct mtd_info *mtd, loff_t from,
struct mtd_oob_ops *ops)
@@ -971,7 +971,7 @@ err_in_read:
* Reads flash memory pages. This function does not read the OOB chunk, but only
* the page data.
*
- * Returns 0 if read successfull, of -EIO, -EINVAL if an error occured
+ * Returns 0 if read successful, of -EIO, -EINVAL if an error occurred
*/
static int doc_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
@@ -1109,7 +1109,7 @@ static int doc_get_op_status(struct docg3 *docg3)
* Wait for the chip to be ready again after erase or write operation, and check
* erase/write status.
*
- * Returns 0 if erase successfull, -EIO if erase/write issue, -ETIMEOUT if
+ * Returns 0 if erase successful, -EIO if erase/write issue, -ETIMEOUT if
* timeout
*/
static int doc_write_erase_wait_status(struct docg3 *docg3)
@@ -1186,7 +1186,7 @@ static int doc_erase_block(struct docg3 *docg3, int block0, int block1)
* Erase a bunch of contiguous blocks, by pairs, as a "mtd" page of 1024 is
* split into 2 pages of 512 bytes on 2 contiguous blocks.
*
- * Returns 0 if erase successful, -EINVAL if adressing error, -EIO if erase
+ * Returns 0 if erase successful, -EINVAL if addressing error, -EIO if erase
* issue
*/
static int doc_erase(struct mtd_info *mtd, struct erase_info *info)
@@ -1397,7 +1397,7 @@ static int doc_backup_oob(struct docg3 *docg3, loff_t to,
* Or provide data without OOB, and then a all zeroed OOB will be used (ECC will
* still be filled in if asked for).
*
- * Returns 0 is successfull, EINVAL if length is not 14 bytes
+ * Returns 0 is successful, EINVAL if length is not 14 bytes
*/
static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
struct mtd_oob_ops *ops)
@@ -1945,7 +1945,7 @@ static void doc_release_device(struct mtd_info *mtd)
* docg3_resume - Awakens docg3 floor
* @pdev: platfrom device
*
- * Returns 0 (always successfull)
+ * Returns 0 (always successful)
*/
static int docg3_resume(struct platform_device *pdev)
{
diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c
index 58fc65f5c81..f2f482bec57 100644
--- a/drivers/mtd/mtdchar.c
+++ b/drivers/mtd/mtdchar.c
@@ -376,7 +376,7 @@ static int otp_select_filemode(struct mtd_file_info *mfi, int mode)
* Make a fake call to mtd_read_fact_prot_reg() to check if OTP
* operations are supported.
*/
- if (mtd_read_fact_prot_reg(mtd, -1, -1, &retlen, NULL) == -EOPNOTSUPP)
+ if (mtd_read_fact_prot_reg(mtd, -1, 0, &retlen, NULL) == -EOPNOTSUPP)
return -EOPNOTSUPP;
switch (mode) {
diff --git a/drivers/mtd/nand/ams-delta.c b/drivers/mtd/nand/ams-delta.c
index 73416951f4c..861ca8f7e47 100644
--- a/drivers/mtd/nand/ams-delta.c
+++ b/drivers/mtd/nand/ams-delta.c
@@ -212,18 +212,17 @@ static int __devinit ams_delta_init(struct platform_device *pdev)
/* Link the private data with the MTD structure */
ams_delta_mtd->priv = this;
- if (!request_mem_region(res->start, resource_size(res),
- dev_name(&pdev->dev))) {
- dev_err(&pdev->dev, "request_mem_region failed\n");
- err = -EBUSY;
- goto out_free;
- }
+ /*
+ * Don't try to request the memory region from here,
+ * it should have been already requested from the
+ * gpio-omap driver and requesting it again would fail.
+ */
io_base = ioremap(res->start, resource_size(res));
if (io_base == NULL) {
dev_err(&pdev->dev, "ioremap failed\n");
err = -EIO;
- goto out_release_io;
+ goto out_free;
}
this->priv = io_base;
@@ -271,8 +270,6 @@ out_gpio:
platform_set_drvdata(pdev, NULL);
gpio_free(AMS_DELTA_GPIO_PIN_NAND_RB);
iounmap(io_base);
-out_release_io:
- release_mem_region(res->start, resource_size(res));
out_free:
kfree(ams_delta_mtd);
out:
@@ -285,7 +282,6 @@ out_free:
static int __devexit ams_delta_cleanup(struct platform_device *pdev)
{
void __iomem *io_base = platform_get_drvdata(pdev);
- struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
/* Release resources, unregister device */
nand_release(ams_delta_mtd);
@@ -293,7 +289,6 @@ static int __devexit ams_delta_cleanup(struct platform_device *pdev)
gpio_free_array(_mandatory_gpio, ARRAY_SIZE(_mandatory_gpio));
gpio_free(AMS_DELTA_GPIO_PIN_NAND_RB);
iounmap(io_base);
- release_mem_region(res->start, resource_size(res));
/* Free the MTD device structure */
kfree(ams_delta_mtd);
diff --git a/drivers/mtd/nand/autcpu12.c b/drivers/mtd/nand/autcpu12.c
index 2e42ec2e8ff..04769a49a7c 100644
--- a/drivers/mtd/nand/autcpu12.c
+++ b/drivers/mtd/nand/autcpu12.c
@@ -102,10 +102,10 @@ static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd,
void __iomem *addr;
unsigned char bits;
- addr = CS89712_VIRT_BASE + AUTCPU12_SMC_PORT_OFFSET;
- bits = (ctrl & NAND_CLE) << 4;
+ bits = clps_readb(AUTCPU12_SMC_PORT_OFFSET) & ~0x30;
+ bits |= (ctrl & NAND_CLE) << 4;
bits |= (ctrl & NAND_ALE) << 2;
- writeb((readb(addr) & ~0x30) | bits, addr);
+ clps_writeb(bits, AUTCPU12_SMC_PORT_OFFSET);
addr = autcpu12_fio_base + AUTCPU12_SMC_SELECT_OFFSET;
writeb((readb(addr) & ~0x1) | (ctrl & NAND_NCE), addr);
@@ -120,9 +120,7 @@ static void autcpu12_hwcontrol(struct mtd_info *mtd, int cmd,
*/
int autcpu12_device_ready(struct mtd_info *mtd)
{
- void __iomem *addr = CS89712_VIRT_BASE + AUTCPU12_SMC_PORT_OFFSET;
-
- return readb(addr) & AUTCPU12_SMC_RDY;
+ return clps_readb(AUTCPU12_SMC_PORT_OFFSET) & AUTCPU12_SMC_RDY;
}
/*
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index 9ec51cec2e1..b68e04310bd 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -24,6 +24,7 @@
#include <linux/module.h>
#include <linux/mtd/gpmi-nand.h>
#include <linux/mtd/partitions.h>
+#include <linux/pinctrl/consumer.h>
#include "gpmi-nand.h"
/* add our owner bbt descriptor */
@@ -476,6 +477,7 @@ acquire_err:
static int __devinit acquire_resources(struct gpmi_nand_data *this)
{
struct resources *res = &this->resources;
+ struct pinctrl *pinctrl;
int ret;
ret = acquire_register_block(this, GPMI_NAND_GPMI_REGS_ADDR_RES_NAME);
@@ -494,6 +496,12 @@ static int __devinit acquire_resources(struct gpmi_nand_data *this)
if (ret)
goto exit_dma_channels;
+ pinctrl = devm_pinctrl_get_select_default(&this->pdev->dev);
+ if (IS_ERR(pinctrl)) {
+ ret = PTR_ERR(pinctrl);
+ goto exit_pin;
+ }
+
res->clock = clk_get(&this->pdev->dev, NULL);
if (IS_ERR(res->clock)) {
pr_err("can not get the clock\n");
@@ -503,6 +511,7 @@ static int __devinit acquire_resources(struct gpmi_nand_data *this)
return 0;
exit_clock:
+exit_pin:
release_dma_channels(this);
exit_dma_channels:
release_bch_irq(this);
diff --git a/drivers/mtd/nand/h1910.c b/drivers/mtd/nand/h1910.c
index 11e48781342..9bf5ce5fa22 100644
--- a/drivers/mtd/nand/h1910.c
+++ b/drivers/mtd/nand/h1910.c
@@ -24,7 +24,7 @@
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <asm/io.h>
-#include <mach/hardware.h> /* for CLPS7111_VIRT_BASE */
+#include <mach/hardware.h>
#include <asm/sizes.h>
#include <mach/h1900-gpio.h>
#include <mach/ipaq.h>
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index cc0678a967c..9e374e9bd29 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -690,7 +690,7 @@ static void mxc_nand_select_chip(struct mtd_info *mtd, int chip)
if (chip == -1) {
/* Disable the NFC clock */
if (host->clk_act) {
- clk_disable(host->clk);
+ clk_disable_unprepare(host->clk);
host->clk_act = 0;
}
return;
@@ -698,7 +698,7 @@ static void mxc_nand_select_chip(struct mtd_info *mtd, int chip)
if (!host->clk_act) {
/* Enable the NFC clock */
- clk_enable(host->clk);
+ clk_prepare_enable(host->clk);
host->clk_act = 1;
}
@@ -1078,7 +1078,7 @@ static int __init mxcnd_probe(struct platform_device *pdev)
goto eclk;
}
- clk_enable(host->clk);
+ clk_prepare_enable(host->clk);
host->clk_act = 1;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c
index 1d3bfb26080..513dc88a05c 100644
--- a/drivers/mtd/nand/orion_nand.c
+++ b/drivers/mtd/nand/orion_nand.c
@@ -13,9 +13,12 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/of.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
+#include <linux/clk.h>
+#include <linux/err.h>
#include <asm/io.h>
#include <asm/sizes.h>
#include <mach/hardware.h>
@@ -74,11 +77,14 @@ static void orion_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
static int __init orion_nand_probe(struct platform_device *pdev)
{
struct mtd_info *mtd;
+ struct mtd_part_parser_data ppdata = {};
struct nand_chip *nc;
struct orion_nand_data *board;
struct resource *res;
+ struct clk *clk;
void __iomem *io_base;
int ret = 0;
+ u32 val = 0;
nc = kzalloc(sizeof(struct nand_chip) + sizeof(struct mtd_info), GFP_KERNEL);
if (!nc) {
@@ -101,7 +107,32 @@ static int __init orion_nand_probe(struct platform_device *pdev)
goto no_res;
}
- board = pdev->dev.platform_data;
+ if (pdev->dev.of_node) {
+ board = devm_kzalloc(&pdev->dev, sizeof(struct orion_nand_data),
+ GFP_KERNEL);
+ if (!board) {
+ printk(KERN_ERR "orion_nand: failed to allocate board structure.\n");
+ ret = -ENOMEM;
+ goto no_res;
+ }
+ if (!of_property_read_u32(pdev->dev.of_node, "cle", &val))
+ board->cle = (u8)val;
+ else
+ board->cle = 0;
+ if (!of_property_read_u32(pdev->dev.of_node, "ale", &val))
+ board->ale = (u8)val;
+ else
+ board->ale = 1;
+ if (!of_property_read_u32(pdev->dev.of_node,
+ "bank-width", &val))
+ board->width = (u8)val * 8;
+ else
+ board->width = 8;
+ if (!of_property_read_u32(pdev->dev.of_node,
+ "chip-delay", &val))
+ board->chip_delay = (u8)val;
+ } else
+ board = pdev->dev.platform_data;
mtd->priv = nc;
mtd->owner = THIS_MODULE;
@@ -115,6 +146,10 @@ static int __init orion_nand_probe(struct platform_device *pdev)
if (board->chip_delay)
nc->chip_delay = board->chip_delay;
+ WARN(board->width > 16,
+ "%d bit bus width out of range",
+ board->width);
+
if (board->width == 16)
nc->options |= NAND_BUSWIDTH_16;
@@ -123,14 +158,23 @@ static int __init orion_nand_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, mtd);
+ /* Not all platforms can gate the clock, so it is not
+ an error if the clock does not exists. */
+ clk = clk_get(&pdev->dev, NULL);
+ if (!IS_ERR(clk)) {
+ clk_prepare_enable(clk);
+ clk_put(clk);
+ }
+
if (nand_scan(mtd, 1)) {
ret = -ENXIO;
goto no_dev;
}
mtd->name = "orion_nand";
- ret = mtd_device_parse_register(mtd, NULL, NULL, board->parts,
- board->nr_parts);
+ ppdata.of_node = pdev->dev.of_node;
+ ret = mtd_device_parse_register(mtd, NULL, &ppdata,
+ board->parts, board->nr_parts);
if (ret) {
nand_release(mtd);
goto no_dev;
@@ -151,6 +195,7 @@ static int __devexit orion_nand_remove(struct platform_device *pdev)
{
struct mtd_info *mtd = platform_get_drvdata(pdev);
struct nand_chip *nc = mtd->priv;
+ struct clk *clk;
nand_release(mtd);
@@ -158,14 +203,28 @@ static int __devexit orion_nand_remove(struct platform_device *pdev)
kfree(nc);
+ clk = clk_get(&pdev->dev, NULL);
+ if (!IS_ERR(clk)) {
+ clk_disable_unprepare(clk);
+ clk_put(clk);
+ }
+
return 0;
}
+#ifdef CONFIG_OF
+static struct of_device_id orion_nand_of_match_table[] = {
+ { .compatible = "mrvl,orion-nand", },
+ {},
+};
+#endif
+
static struct platform_driver orion_nand_driver = {
.remove = __devexit_p(orion_nand_remove),
.driver = {
.name = "orion_nand",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(orion_nand_of_match_table),
},
};
diff --git a/drivers/mtd/ubi/Kconfig b/drivers/mtd/ubi/Kconfig
index 4dcc752a0c0..738ee8dc16c 100644
--- a/drivers/mtd/ubi/Kconfig
+++ b/drivers/mtd/ubi/Kconfig
@@ -52,12 +52,4 @@ config MTD_UBI_GLUEBI
work on top of UBI. Do not enable this unless you use legacy
software.
-config MTD_UBI_DEBUG
- bool "UBI debugging"
- depends on SYSFS
- select DEBUG_FS
- select KALLSYMS
- help
- This option enables UBI debugging.
-
endif # MTD_UBI
diff --git a/drivers/mtd/ubi/Makefile b/drivers/mtd/ubi/Makefile
index c9302a5452b..a0803ac7471 100644
--- a/drivers/mtd/ubi/Makefile
+++ b/drivers/mtd/ubi/Makefile
@@ -1,7 +1,6 @@
obj-$(CONFIG_MTD_UBI) += ubi.o
-ubi-y += vtbl.o vmt.o upd.o build.o cdev.o kapi.o eba.o io.o wl.o scan.o
-ubi-y += misc.o
+ubi-y += vtbl.o vmt.o upd.o build.o cdev.o kapi.o eba.o io.o wl.o attach.o
+ubi-y += misc.o debug.o
-ubi-$(CONFIG_MTD_UBI_DEBUG) += debug.o
obj-$(CONFIG_MTD_UBI_GLUEBI) += gluebi.o
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/attach.c
index 12c43b44f81..bd27cbbb406 100644
--- a/drivers/mtd/ubi/scan.c
+++ b/drivers/mtd/ubi/attach.c
@@ -19,21 +19,21 @@
*/
/*
- * UBI scanning sub-system.
+ * UBI attaching sub-system.
*
- * This sub-system is responsible for scanning the flash media, checking UBI
- * headers and providing complete information about the UBI flash image.
+ * This sub-system is responsible for attaching MTD devices and it also
+ * implements flash media scanning.
*
- * The scanning information is represented by a &struct ubi_scan_info' object.
- * Information about found volumes is represented by &struct ubi_scan_volume
+ * The attaching information is represented by a &struct ubi_attach_info'
+ * object. Information about volumes is represented by &struct ubi_ainf_volume
* objects which are kept in volume RB-tree with root at the @volumes field.
* The RB-tree is indexed by the volume ID.
*
- * Scanned logical eraseblocks are represented by &struct ubi_scan_leb objects.
- * These objects are kept in per-volume RB-trees with the root at the
- * corresponding &struct ubi_scan_volume object. To put it differently, we keep
- * an RB-tree of per-volume objects and each of these objects is the root of
- * RB-tree of per-eraseblock objects.
+ * Logical eraseblocks are represented by &struct ubi_ainf_peb objects. These
+ * objects are kept in per-volume RB-trees with the root at the corresponding
+ * &struct ubi_ainf_volume object. To put it differently, we keep an RB-tree of
+ * per-volume objects and each of these objects is the root of RB-tree of
+ * per-LEB objects.
*
* Corrupted physical eraseblocks are put to the @corr list, free physical
* eraseblocks are put to the @free list and the physical eraseblock to be
@@ -51,28 +51,29 @@
*
* 1. Corruptions caused by power cuts. These are expected corruptions and UBI
* tries to handle them gracefully, without printing too many warnings and
- * error messages. The idea is that we do not lose important data in these case
- * - we may lose only the data which was being written to the media just before
- * the power cut happened, and the upper layers (e.g., UBIFS) are supposed to
- * handle such data losses (e.g., by using the FS journal).
+ * error messages. The idea is that we do not lose important data in these
+ * cases - we may lose only the data which were being written to the media just
+ * before the power cut happened, and the upper layers (e.g., UBIFS) are
+ * supposed to handle such data losses (e.g., by using the FS journal).
*
* When UBI detects a corruption (CRC-32 mismatch) in a PEB, and it looks like
* the reason is a power cut, UBI puts this PEB to the @erase list, and all
* PEBs in the @erase list are scheduled for erasure later.
*
* 2. Unexpected corruptions which are not caused by power cuts. During
- * scanning, such PEBs are put to the @corr list and UBI preserves them.
+ * attaching, such PEBs are put to the @corr list and UBI preserves them.
* Obviously, this lessens the amount of available PEBs, and if at some point
* UBI runs out of free PEBs, it switches to R/O mode. UBI also loudly informs
* about such PEBs every time the MTD device is attached.
*
* However, it is difficult to reliably distinguish between these types of
- * corruptions and UBI's strategy is as follows. UBI assumes corruption type 2
- * if the VID header is corrupted and the data area does not contain all 0xFFs,
- * and there were no bit-flips or integrity errors while reading the data area.
- * Otherwise UBI assumes corruption type 1. So the decision criteria are as
- * follows.
- * o If the data area contains only 0xFFs, there is no data, and it is safe
+ * corruptions and UBI's strategy is as follows (in case of attaching by
+ * scanning). UBI assumes corruption type 2 if the VID header is corrupted and
+ * the data area does not contain all 0xFFs, and there were no bit-flips or
+ * integrity errors (e.g., ECC errors in case of NAND) while reading the data
+ * area. Otherwise UBI assumes corruption type 1. So the decision criteria
+ * are as follows.
+ * o If the data area contains only 0xFFs, there are no data, and it is safe
* to just erase this PEB - this is corruption type 1.
* o If the data area has bit-flips or data integrity errors (ECC errors on
* NAND), it is probably a PEB which was being erased when power cut
@@ -88,11 +89,7 @@
#include <linux/random.h>
#include "ubi.h"
-#ifdef CONFIG_MTD_UBI_DEBUG
-static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si);
-#else
-#define paranoid_check_si(ubi, si) 0
-#endif
+static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai);
/* Temporary variables used during scanning */
static struct ubi_ec_hdr *ech;
@@ -100,13 +97,18 @@ static struct ubi_vid_hdr *vidh;
/**
* add_to_list - add physical eraseblock to a list.
- * @si: scanning information
+ * @ai: attaching information
* @pnum: physical eraseblock number to add
+ * @vol_id: the last used volume id for the PEB
+ * @lnum: the last used LEB number for the PEB
* @ec: erase counter of the physical eraseblock
* @to_head: if not zero, add to the head of the list
* @list: the list to add to
*
- * This function adds physical eraseblock @pnum to free, erase, or alien lists.
+ * This function allocates a 'struct ubi_ainf_peb' object for physical
+ * eraseblock @pnum and adds it to the "free", "erase", or "alien" lists.
+ * It stores the @lnum and @vol_id alongside, which can both be
+ * %UBI_UNKNOWN if they are not available, not readable, or not assigned.
* If @to_head is not zero, PEB will be added to the head of the list, which
* basically means it will be processed first later. E.g., we add corrupted
* PEBs (corrupted due to power cuts) to the head of the erase list to make
@@ -114,65 +116,68 @@ static struct ubi_vid_hdr *vidh;
* returns zero in case of success and a negative error code in case of
* failure.
*/
-static int add_to_list(struct ubi_scan_info *si, int pnum, int ec, int to_head,
- struct list_head *list)
+static int add_to_list(struct ubi_attach_info *ai, int pnum, int vol_id,
+ int lnum, int ec, int to_head, struct list_head *list)
{
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_peb *aeb;
- if (list == &si->free) {
+ if (list == &ai->free) {
dbg_bld("add to free: PEB %d, EC %d", pnum, ec);
- } else if (list == &si->erase) {
+ } else if (list == &ai->erase) {
dbg_bld("add to erase: PEB %d, EC %d", pnum, ec);
- } else if (list == &si->alien) {
+ } else if (list == &ai->alien) {
dbg_bld("add to alien: PEB %d, EC %d", pnum, ec);
- si->alien_peb_count += 1;
+ ai->alien_peb_count += 1;
} else
BUG();
- seb = kmem_cache_alloc(si->scan_leb_slab, GFP_KERNEL);
- if (!seb)
+ aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);
+ if (!aeb)
return -ENOMEM;
- seb->pnum = pnum;
- seb->ec = ec;
+ aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
+ aeb->lnum = lnum;
+ aeb->ec = ec;
if (to_head)
- list_add(&seb->u.list, list);
+ list_add(&aeb->u.list, list);
else
- list_add_tail(&seb->u.list, list);
+ list_add_tail(&aeb->u.list, list);
return 0;
}
/**
* add_corrupted - add a corrupted physical eraseblock.
- * @si: scanning information
+ * @ai: attaching information
* @pnum: physical eraseblock number to add
* @ec: erase counter of the physical eraseblock
*
- * This function adds corrupted physical eraseblock @pnum to the 'corr' list.
- * The corruption was presumably not caused by a power cut. Returns zero in
- * case of success and a negative error code in case of failure.
+ * This function allocates a 'struct ubi_ainf_peb' object for a corrupted
+ * physical eraseblock @pnum and adds it to the 'corr' list. The corruption
+ * was presumably not caused by a power cut. Returns zero in case of success
+ * and a negative error code in case of failure.
*/
-static int add_corrupted(struct ubi_scan_info *si, int pnum, int ec)
+static int add_corrupted(struct ubi_attach_info *ai, int pnum, int ec)
{
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_peb *aeb;
dbg_bld("add to corrupted: PEB %d, EC %d", pnum, ec);
- seb = kmem_cache_alloc(si->scan_leb_slab, GFP_KERNEL);
- if (!seb)
+ aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);
+ if (!aeb)
return -ENOMEM;
- si->corr_peb_count += 1;
- seb->pnum = pnum;
- seb->ec = ec;
- list_add(&seb->u.list, &si->corr);
+ ai->corr_peb_count += 1;
+ aeb->pnum = pnum;
+ aeb->ec = ec;
+ list_add(&aeb->u.list, &ai->corr);
return 0;
}
/**
* validate_vid_hdr - check volume identifier header.
* @vid_hdr: the volume identifier header to check
- * @sv: information about the volume this logical eraseblock belongs to
+ * @av: information about the volume this logical eraseblock belongs to
* @pnum: physical eraseblock number the VID header came from
*
* This function checks that data stored in @vid_hdr is consistent. Returns
@@ -184,15 +189,15 @@ static int add_corrupted(struct ubi_scan_info *si, int pnum, int ec)
* headers of the same volume.
*/
static int validate_vid_hdr(const struct ubi_vid_hdr *vid_hdr,
- const struct ubi_scan_volume *sv, int pnum)
+ const struct ubi_ainf_volume *av, int pnum)
{
int vol_type = vid_hdr->vol_type;
int vol_id = be32_to_cpu(vid_hdr->vol_id);
int used_ebs = be32_to_cpu(vid_hdr->used_ebs);
int data_pad = be32_to_cpu(vid_hdr->data_pad);
- if (sv->leb_count != 0) {
- int sv_vol_type;
+ if (av->leb_count != 0) {
+ int av_vol_type;
/*
* This is not the first logical eraseblock belonging to this
@@ -200,28 +205,28 @@ static int validate_vid_hdr(const struct ubi_vid_hdr *vid_hdr,
* to the data in previous logical eraseblock headers.
*/
- if (vol_id != sv->vol_id) {
- dbg_err("inconsistent vol_id");
+ if (vol_id != av->vol_id) {
+ ubi_err("inconsistent vol_id");
goto bad;
}
- if (sv->vol_type == UBI_STATIC_VOLUME)
- sv_vol_type = UBI_VID_STATIC;
+ if (av->vol_type == UBI_STATIC_VOLUME)
+ av_vol_type = UBI_VID_STATIC;
else
- sv_vol_type = UBI_VID_DYNAMIC;
+ av_vol_type = UBI_VID_DYNAMIC;
- if (vol_type != sv_vol_type) {
- dbg_err("inconsistent vol_type");
+ if (vol_type != av_vol_type) {
+ ubi_err("inconsistent vol_type");
goto bad;
}
- if (used_ebs != sv->used_ebs) {
- dbg_err("inconsistent used_ebs");
+ if (used_ebs != av->used_ebs) {
+ ubi_err("inconsistent used_ebs");
goto bad;
}
- if (data_pad != sv->data_pad) {
- dbg_err("inconsistent data_pad");
+ if (data_pad != av->data_pad) {
+ ubi_err("inconsistent data_pad");
goto bad;
}
}
@@ -230,74 +235,74 @@ static int validate_vid_hdr(const struct ubi_vid_hdr *vid_hdr,
bad:
ubi_err("inconsistent VID header at PEB %d", pnum);
- ubi_dbg_dump_vid_hdr(vid_hdr);
- ubi_dbg_dump_sv(sv);
+ ubi_dump_vid_hdr(vid_hdr);
+ ubi_dump_av(av);
return -EINVAL;
}
/**
- * add_volume - add volume to the scanning information.
- * @si: scanning information
+ * add_volume - add volume to the attaching information.
+ * @ai: attaching information
* @vol_id: ID of the volume to add
* @pnum: physical eraseblock number
* @vid_hdr: volume identifier header
*
* If the volume corresponding to the @vid_hdr logical eraseblock is already
- * present in the scanning information, this function does nothing. Otherwise
- * it adds corresponding volume to the scanning information. Returns a pointer
- * to the scanning volume object in case of success and a negative error code
- * in case of failure.
+ * present in the attaching information, this function does nothing. Otherwise
+ * it adds corresponding volume to the attaching information. Returns a pointer
+ * to the allocated "av" object in case of success and a negative error code in
+ * case of failure.
*/
-static struct ubi_scan_volume *add_volume(struct ubi_scan_info *si, int vol_id,
- int pnum,
+static struct ubi_ainf_volume *add_volume(struct ubi_attach_info *ai,
+ int vol_id, int pnum,
const struct ubi_vid_hdr *vid_hdr)
{
- struct ubi_scan_volume *sv;
- struct rb_node **p = &si->volumes.rb_node, *parent = NULL;
+ struct ubi_ainf_volume *av;
+ struct rb_node **p = &ai->volumes.rb_node, *parent = NULL;
ubi_assert(vol_id == be32_to_cpu(vid_hdr->vol_id));
/* Walk the volume RB-tree to look if this volume is already present */
while (*p) {
parent = *p;
- sv = rb_entry(parent, struct ubi_scan_volume, rb);
+ av = rb_entry(parent, struct ubi_ainf_volume, rb);
- if (vol_id == sv->vol_id)
- return sv;
+ if (vol_id == av->vol_id)
+ return av;
- if (vol_id > sv->vol_id)
+ if (vol_id > av->vol_id)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
/* The volume is absent - add it */
- sv = kmalloc(sizeof(struct ubi_scan_volume), GFP_KERNEL);
- if (!sv)
+ av = kmalloc(sizeof(struct ubi_ainf_volume), GFP_KERNEL);
+ if (!av)
return ERR_PTR(-ENOMEM);
- sv->highest_lnum = sv->leb_count = 0;
- sv->vol_id = vol_id;
- sv->root = RB_ROOT;
- sv->used_ebs = be32_to_cpu(vid_hdr->used_ebs);
- sv->data_pad = be32_to_cpu(vid_hdr->data_pad);
- sv->compat = vid_hdr->compat;
- sv->vol_type = vid_hdr->vol_type == UBI_VID_DYNAMIC ? UBI_DYNAMIC_VOLUME
+ av->highest_lnum = av->leb_count = 0;
+ av->vol_id = vol_id;
+ av->root = RB_ROOT;
+ av->used_ebs = be32_to_cpu(vid_hdr->used_ebs);
+ av->data_pad = be32_to_cpu(vid_hdr->data_pad);
+ av->compat = vid_hdr->compat;
+ av->vol_type = vid_hdr->vol_type == UBI_VID_DYNAMIC ? UBI_DYNAMIC_VOLUME
: UBI_STATIC_VOLUME;
- if (vol_id > si->highest_vol_id)
- si->highest_vol_id = vol_id;
+ if (vol_id > ai->highest_vol_id)
+ ai->highest_vol_id = vol_id;
- rb_link_node(&sv->rb, parent, p);
- rb_insert_color(&sv->rb, &si->volumes);
- si->vols_found += 1;
+ rb_link_node(&av->rb, parent, p);
+ rb_insert_color(&av->rb, &ai->volumes);
+ ai->vols_found += 1;
dbg_bld("added volume %d", vol_id);
- return sv;
+ return av;
}
/**
* compare_lebs - find out which logical eraseblock is newer.
* @ubi: UBI device description object
- * @seb: first logical eraseblock to compare
+ * @aeb: first logical eraseblock to compare
* @pnum: physical eraseblock number of the second logical eraseblock to
* compare
* @vid_hdr: volume identifier header of the second logical eraseblock
@@ -306,7 +311,7 @@ static struct ubi_scan_volume *add_volume(struct ubi_scan_info *si, int vol_id,
* case of success this function returns a positive value, in case of failure, a
* negative error code is returned. The success return codes use the following
* bits:
- * o bit 0 is cleared: the first PEB (described by @seb) is newer than the
+ * o bit 0 is cleared: the first PEB (described by @aeb) is newer than the
* second PEB (described by @pnum and @vid_hdr);
* o bit 0 is set: the second PEB is newer;
* o bit 1 is cleared: no bit-flips were detected in the newer LEB;
@@ -314,7 +319,7 @@ static struct ubi_scan_volume *add_volume(struct ubi_scan_info *si, int vol_id,
* o bit 2 is cleared: the older LEB is not corrupted;
* o bit 2 is set: the older LEB is corrupted.
*/
-static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb,
+static int compare_lebs(struct ubi_device *ubi, const struct ubi_ainf_peb *aeb,
int pnum, const struct ubi_vid_hdr *vid_hdr)
{
void *buf;
@@ -323,7 +328,7 @@ static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb,
struct ubi_vid_hdr *vh = NULL;
unsigned long long sqnum2 = be64_to_cpu(vid_hdr->sqnum);
- if (sqnum2 == seb->sqnum) {
+ if (sqnum2 == aeb->sqnum) {
/*
* This must be a really ancient UBI image which has been
* created before sequence numbers support has been added. At
@@ -337,7 +342,7 @@ static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb,
}
/* Obviously the LEB with lower sequence counter is older */
- second_is_newer = !!(sqnum2 > seb->sqnum);
+ second_is_newer = (sqnum2 > aeb->sqnum);
/*
* Now we know which copy is newer. If the copy flag of the PEB with
@@ -356,7 +361,7 @@ static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb,
return 1;
}
} else {
- if (!seb->copy_flag) {
+ if (!aeb->copy_flag) {
/* It is not a copy, so it is newer */
dbg_bld("first PEB %d is newer, copy_flag is unset",
pnum);
@@ -367,13 +372,13 @@ static int compare_lebs(struct ubi_device *ubi, const struct ubi_scan_leb *seb,
if (!vh)
return -ENOMEM;
- pnum = seb->pnum;
+ pnum = aeb->pnum;
err = ubi_io_read_vid_hdr(ubi, pnum, vh, 0);
if (err) {
if (err == UBI_IO_BITFLIPS)
bitflips = 1;
else {
- dbg_err("VID of PEB %d header is bad, but it "
+ ubi_err("VID of PEB %d header is bad, but it "
"was OK earlier, err %d", pnum, err);
if (err > 0)
err = -EIO;
@@ -429,9 +434,9 @@ out_free_vidh:
}
/**
- * ubi_scan_add_used - add physical eraseblock to the scanning information.
+ * ubi_add_to_av - add used physical eraseblock to the attaching information.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
* @pnum: the physical eraseblock number
* @ec: erase counter
* @vid_hdr: the volume identifier header
@@ -444,14 +449,13 @@ out_free_vidh:
* to be picked, while the older one has to be dropped. This function returns
* zero in case of success and a negative error code in case of failure.
*/
-int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
- int pnum, int ec, const struct ubi_vid_hdr *vid_hdr,
- int bitflips)
+int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum,
+ int ec, const struct ubi_vid_hdr *vid_hdr, int bitflips)
{
int err, vol_id, lnum;
unsigned long long sqnum;
- struct ubi_scan_volume *sv;
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_volume *av;
+ struct ubi_ainf_peb *aeb;
struct rb_node **p, *parent = NULL;
vol_id = be32_to_cpu(vid_hdr->vol_id);
@@ -461,25 +465,25 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
dbg_bld("PEB %d, LEB %d:%d, EC %d, sqnum %llu, bitflips %d",
pnum, vol_id, lnum, ec, sqnum, bitflips);
- sv = add_volume(si, vol_id, pnum, vid_hdr);
- if (IS_ERR(sv))
- return PTR_ERR(sv);
+ av = add_volume(ai, vol_id, pnum, vid_hdr);
+ if (IS_ERR(av))
+ return PTR_ERR(av);
- if (si->max_sqnum < sqnum)
- si->max_sqnum = sqnum;
+ if (ai->max_sqnum < sqnum)
+ ai->max_sqnum = sqnum;
/*
* Walk the RB-tree of logical eraseblocks of volume @vol_id to look
* if this is the first instance of this logical eraseblock or not.
*/
- p = &sv->root.rb_node;
+ p = &av->root.rb_node;
while (*p) {
int cmp_res;
parent = *p;
- seb = rb_entry(parent, struct ubi_scan_leb, u.rb);
- if (lnum != seb->lnum) {
- if (lnum < seb->lnum)
+ aeb = rb_entry(parent, struct ubi_ainf_peb, u.rb);
+ if (lnum != aeb->lnum) {
+ if (lnum < aeb->lnum)
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
@@ -491,8 +495,8 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
* logical eraseblock present.
*/
- dbg_bld("this LEB already exists: PEB %d, sqnum %llu, "
- "EC %d", seb->pnum, seb->sqnum, seb->ec);
+ dbg_bld("this LEB already exists: PEB %d, sqnum %llu, EC %d",
+ aeb->pnum, aeb->sqnum, aeb->ec);
/*
* Make sure that the logical eraseblocks have different
@@ -507,11 +511,11 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
* images, but refuse attaching old images with duplicated
* logical eraseblocks because there was an unclean reboot.
*/
- if (seb->sqnum == sqnum && sqnum != 0) {
+ if (aeb->sqnum == sqnum && sqnum != 0) {
ubi_err("two LEBs with same sequence number %llu",
sqnum);
- ubi_dbg_dump_seb(seb, 0);
- ubi_dbg_dump_vid_hdr(vid_hdr);
+ ubi_dump_aeb(aeb, 0);
+ ubi_dump_vid_hdr(vid_hdr);
return -EINVAL;
}
@@ -519,7 +523,7 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
* Now we have to drop the older one and preserve the newer
* one.
*/
- cmp_res = compare_lebs(ubi, seb, pnum, vid_hdr);
+ cmp_res = compare_lebs(ubi, aeb, pnum, vid_hdr);
if (cmp_res < 0)
return cmp_res;
@@ -528,23 +532,26 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
* This logical eraseblock is newer than the one
* found earlier.
*/
- err = validate_vid_hdr(vid_hdr, sv, pnum);
+ err = validate_vid_hdr(vid_hdr, av, pnum);
if (err)
return err;
- err = add_to_list(si, seb->pnum, seb->ec, cmp_res & 4,
- &si->erase);
+ err = add_to_list(ai, aeb->pnum, aeb->vol_id,
+ aeb->lnum, aeb->ec, cmp_res & 4,
+ &ai->erase);
if (err)
return err;
- seb->ec = ec;
- seb->pnum = pnum;
- seb->scrub = ((cmp_res & 2) || bitflips);
- seb->copy_flag = vid_hdr->copy_flag;
- seb->sqnum = sqnum;
+ aeb->ec = ec;
+ aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
+ aeb->lnum = lnum;
+ aeb->scrub = ((cmp_res & 2) || bitflips);
+ aeb->copy_flag = vid_hdr->copy_flag;
+ aeb->sqnum = sqnum;
- if (sv->highest_lnum == lnum)
- sv->last_data_size =
+ if (av->highest_lnum == lnum)
+ av->last_data_size =
be32_to_cpu(vid_hdr->data_size);
return 0;
@@ -553,92 +560,64 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
* This logical eraseblock is older than the one found
* previously.
*/
- return add_to_list(si, pnum, ec, cmp_res & 4,
- &si->erase);
+ return add_to_list(ai, pnum, vol_id, lnum, ec,
+ cmp_res & 4, &ai->erase);
}
}
/*
* We've met this logical eraseblock for the first time, add it to the
- * scanning information.
+ * attaching information.
*/
- err = validate_vid_hdr(vid_hdr, sv, pnum);
+ err = validate_vid_hdr(vid_hdr, av, pnum);
if (err)
return err;
- seb = kmem_cache_alloc(si->scan_leb_slab, GFP_KERNEL);
- if (!seb)
+ aeb = kmem_cache_alloc(ai->aeb_slab_cache, GFP_KERNEL);
+ if (!aeb)
return -ENOMEM;
- seb->ec = ec;
- seb->pnum = pnum;
- seb->lnum = lnum;
- seb->scrub = bitflips;
- seb->copy_flag = vid_hdr->copy_flag;
- seb->sqnum = sqnum;
-
- if (sv->highest_lnum <= lnum) {
- sv->highest_lnum = lnum;
- sv->last_data_size = be32_to_cpu(vid_hdr->data_size);
+ aeb->ec = ec;
+ aeb->pnum = pnum;
+ aeb->vol_id = vol_id;
+ aeb->lnum = lnum;
+ aeb->scrub = bitflips;
+ aeb->copy_flag = vid_hdr->copy_flag;
+ aeb->sqnum = sqnum;
+
+ if (av->highest_lnum <= lnum) {
+ av->highest_lnum = lnum;
+ av->last_data_size = be32_to_cpu(vid_hdr->data_size);
}
- sv->leb_count += 1;
- rb_link_node(&seb->u.rb, parent, p);
- rb_insert_color(&seb->u.rb, &sv->root);
+ av->leb_count += 1;
+ rb_link_node(&aeb->u.rb, parent, p);
+ rb_insert_color(&aeb->u.rb, &av->root);
return 0;
}
/**
- * ubi_scan_find_sv - find volume in the scanning information.
- * @si: scanning information
+ * ubi_find_av - find volume in the attaching information.
+ * @ai: attaching information
* @vol_id: the requested volume ID
*
* This function returns a pointer to the volume description or %NULL if there
- * are no data about this volume in the scanning information.
- */
-struct ubi_scan_volume *ubi_scan_find_sv(const struct ubi_scan_info *si,
- int vol_id)
-{
- struct ubi_scan_volume *sv;
- struct rb_node *p = si->volumes.rb_node;
-
- while (p) {
- sv = rb_entry(p, struct ubi_scan_volume, rb);
-
- if (vol_id == sv->vol_id)
- return sv;
-
- if (vol_id > sv->vol_id)
- p = p->rb_left;
- else
- p = p->rb_right;
- }
-
- return NULL;
-}
-
-/**
- * ubi_scan_find_seb - find LEB in the volume scanning information.
- * @sv: a pointer to the volume scanning information
- * @lnum: the requested logical eraseblock
- *
- * This function returns a pointer to the scanning logical eraseblock or %NULL
- * if there are no data about it in the scanning volume information.
+ * are no data about this volume in the attaching information.
*/
-struct ubi_scan_leb *ubi_scan_find_seb(const struct ubi_scan_volume *sv,
- int lnum)
+struct ubi_ainf_volume *ubi_find_av(const struct ubi_attach_info *ai,
+ int vol_id)
{
- struct ubi_scan_leb *seb;
- struct rb_node *p = sv->root.rb_node;
+ struct ubi_ainf_volume *av;
+ struct rb_node *p = ai->volumes.rb_node;
while (p) {
- seb = rb_entry(p, struct ubi_scan_leb, u.rb);
+ av = rb_entry(p, struct ubi_ainf_volume, rb);
- if (lnum == seb->lnum)
- return seb;
+ if (vol_id == av->vol_id)
+ return av;
- if (lnum > seb->lnum)
+ if (vol_id > av->vol_id)
p = p->rb_left;
else
p = p->rb_right;
@@ -648,34 +627,34 @@ struct ubi_scan_leb *ubi_scan_find_seb(const struct ubi_scan_volume *sv,
}
/**
- * ubi_scan_rm_volume - delete scanning information about a volume.
- * @si: scanning information
- * @sv: the volume scanning information to delete
+ * ubi_remove_av - delete attaching information about a volume.
+ * @ai: attaching information
+ * @av: the volume attaching information to delete
*/
-void ubi_scan_rm_volume(struct ubi_scan_info *si, struct ubi_scan_volume *sv)
+void ubi_remove_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)
{
struct rb_node *rb;
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_peb *aeb;
- dbg_bld("remove scanning information about volume %d", sv->vol_id);
+ dbg_bld("remove attaching information about volume %d", av->vol_id);
- while ((rb = rb_first(&sv->root))) {
- seb = rb_entry(rb, struct ubi_scan_leb, u.rb);
- rb_erase(&seb->u.rb, &sv->root);
- list_add_tail(&seb->u.list, &si->erase);
+ while ((rb = rb_first(&av->root))) {
+ aeb = rb_entry(rb, struct ubi_ainf_peb, u.rb);
+ rb_erase(&aeb->u.rb, &av->root);
+ list_add_tail(&aeb->u.list, &ai->erase);
}
- rb_erase(&sv->rb, &si->volumes);
- kfree(sv);
- si->vols_found -= 1;
+ rb_erase(&av->rb, &ai->volumes);
+ kfree(av);
+ ai->vols_found -= 1;
}
/**
- * ubi_scan_erase_peb - erase a physical eraseblock.
+ * early_erase_peb - erase a physical eraseblock.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
* @pnum: physical eraseblock number to erase;
- * @ec: erase counter value to write (%UBI_SCAN_UNKNOWN_EC if it is unknown)
+ * @ec: erase counter value to write (%UBI_UNKNOWN if it is unknown)
*
* This function erases physical eraseblock 'pnum', and writes the erase
* counter header to it. This function should only be used on UBI device
@@ -683,8 +662,8 @@ void ubi_scan_rm_volume(struct ubi_scan_info *si, struct ubi_scan_volume *sv)
* This function returns zero in case of success and a negative error code in
* case of failure.
*/
-int ubi_scan_erase_peb(struct ubi_device *ubi, const struct ubi_scan_info *si,
- int pnum, int ec)
+static int early_erase_peb(struct ubi_device *ubi,
+ const struct ubi_attach_info *ai, int pnum, int ec)
{
int err;
struct ubi_ec_hdr *ec_hdr;
@@ -716,9 +695,9 @@ out_free:
}
/**
- * ubi_scan_get_free_peb - get a free physical eraseblock.
+ * ubi_early_get_peb - get a free physical eraseblock.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function returns a free physical eraseblock. It is supposed to be
* called on the UBI initialization stages when the wear-leveling sub-system is
@@ -726,20 +705,20 @@ out_free:
* the lists, writes the EC header if it is needed, and removes it from the
* list.
*
- * This function returns scanning physical eraseblock information in case of
- * success and an error code in case of failure.
+ * This function returns a pointer to the "aeb" of the found free PEB in case
+ * of success and an error code in case of failure.
*/
-struct ubi_scan_leb *ubi_scan_get_free_peb(struct ubi_device *ubi,
- struct ubi_scan_info *si)
+struct ubi_ainf_peb *ubi_early_get_peb(struct ubi_device *ubi,
+ struct ubi_attach_info *ai)
{
int err = 0;
- struct ubi_scan_leb *seb, *tmp_seb;
+ struct ubi_ainf_peb *aeb, *tmp_aeb;
- if (!list_empty(&si->free)) {
- seb = list_entry(si->free.next, struct ubi_scan_leb, u.list);
- list_del(&seb->u.list);
- dbg_bld("return free PEB %d, EC %d", seb->pnum, seb->ec);
- return seb;
+ if (!list_empty(&ai->free)) {
+ aeb = list_entry(ai->free.next, struct ubi_ainf_peb, u.list);
+ list_del(&aeb->u.list);
+ dbg_bld("return free PEB %d, EC %d", aeb->pnum, aeb->ec);
+ return aeb;
}
/*
@@ -748,18 +727,18 @@ struct ubi_scan_leb *ubi_scan_get_free_peb(struct ubi_device *ubi,
* so forth. We don't want to take care about bad eraseblocks here -
* they'll be handled later.
*/
- list_for_each_entry_safe(seb, tmp_seb, &si->erase, u.list) {
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
+ list_for_each_entry_safe(aeb, tmp_aeb, &ai->erase, u.list) {
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
- err = ubi_scan_erase_peb(ubi, si, seb->pnum, seb->ec+1);
+ err = early_erase_peb(ubi, ai, aeb->pnum, aeb->ec+1);
if (err)
continue;
- seb->ec += 1;
- list_del(&seb->u.list);
- dbg_bld("return PEB %d, EC %d", seb->pnum, seb->ec);
- return seb;
+ aeb->ec += 1;
+ list_del(&aeb->u.list);
+ dbg_bld("return PEB %d, EC %d", aeb->pnum, aeb->ec);
+ return aeb;
}
ubi_err("no free eraseblocks");
@@ -814,7 +793,7 @@ static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr,
ubi_err("PEB %d contains corrupted VID header, and the data does not "
"contain all 0xFF, this may be a non-UBI PEB or a severe VID "
"header corruption which requires manual inspection", pnum);
- ubi_dbg_dump_vid_hdr(vid_hdr);
+ ubi_dump_vid_hdr(vid_hdr);
dbg_msg("hexdump of PEB %d offset %d, length %d",
pnum, ubi->leb_start, ubi->leb_size);
ubi_dbg_print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
@@ -827,16 +806,18 @@ out_unlock:
}
/**
- * process_eb - read, check UBI headers, and add them to scanning information.
+ * scan_peb - scan and process UBI headers of a PEB.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
* @pnum: the physical eraseblock number
*
- * This function returns a zero if the physical eraseblock was successfully
- * handled and a negative error code in case of failure.
+ * This function reads UBI headers of PEB @pnum, checks them, and adds
+ * information about this PEB to the corresponding list or RB-tree in the
+ * "attaching info" structure. Returns zero if the physical eraseblock was
+ * successfully handled and a negative error code in case of failure.
*/
-static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
- int pnum)
+static int scan_peb(struct ubi_device *ubi, struct ubi_attach_info *ai,
+ int pnum)
{
long long uninitialized_var(ec);
int err, bitflips = 0, vol_id, ec_err = 0;
@@ -848,12 +829,7 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
if (err < 0)
return err;
else if (err) {
- /*
- * FIXME: this is actually duty of the I/O sub-system to
- * initialize this, but MTD does not provide enough
- * information.
- */
- si->bad_peb_count += 1;
+ ai->bad_peb_count += 1;
return 0;
}
@@ -867,13 +843,13 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
bitflips = 1;
break;
case UBI_IO_FF:
- si->empty_peb_count += 1;
- return add_to_list(si, pnum, UBI_SCAN_UNKNOWN_EC, 0,
- &si->erase);
+ ai->empty_peb_count += 1;
+ return add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ UBI_UNKNOWN, 0, &ai->erase);
case UBI_IO_FF_BITFLIPS:
- si->empty_peb_count += 1;
- return add_to_list(si, pnum, UBI_SCAN_UNKNOWN_EC, 1,
- &si->erase);
+ ai->empty_peb_count += 1;
+ return add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ UBI_UNKNOWN, 1, &ai->erase);
case UBI_IO_BAD_HDR_EBADMSG:
case UBI_IO_BAD_HDR:
/*
@@ -882,7 +858,7 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
* moved and EC be re-created.
*/
ec_err = err;
- ec = UBI_SCAN_UNKNOWN_EC;
+ ec = UBI_UNKNOWN;
bitflips = 1;
break;
default:
@@ -911,7 +887,7 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
*/
ubi_err("erase counter overflow, max is %d",
UBI_MAX_ERASECOUNTER);
- ubi_dbg_dump_ec_hdr(ech);
+ ubi_dump_ec_hdr(ech);
return -EINVAL;
}
@@ -933,7 +909,7 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
ubi->image_seq != image_seq) {
ubi_err("bad image sequence number %d in PEB %d, "
"expected %d", image_seq, pnum, ubi->image_seq);
- ubi_dbg_dump_ec_hdr(ech);
+ ubi_dump_ec_hdr(ech);
return -EINVAL;
}
}
@@ -957,7 +933,7 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
* PEB, bit it is not marked as bad yet. This may also
* be a result of power cut during erasure.
*/
- si->maybe_bad_peb_count += 1;
+ ai->maybe_bad_peb_count += 1;
case UBI_IO_BAD_HDR:
if (ec_err)
/*
@@ -984,23 +960,27 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
return err;
else if (!err)
/* This corruption is caused by a power cut */
- err = add_to_list(si, pnum, ec, 1, &si->erase);
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 1, &ai->erase);
else
/* This is an unexpected corruption */
- err = add_corrupted(si, pnum, ec);
+ err = add_corrupted(ai, pnum, ec);
if (err)
return err;
goto adjust_mean_ec;
case UBI_IO_FF_BITFLIPS:
- err = add_to_list(si, pnum, ec, 1, &si->erase);
+ err = add_to_list(ai, pnum, UBI_UNKNOWN, UBI_UNKNOWN,
+ ec, 1, &ai->erase);
if (err)
return err;
goto adjust_mean_ec;
case UBI_IO_FF:
if (ec_err)
- err = add_to_list(si, pnum, ec, 1, &si->erase);
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 1, &ai->erase);
else
- err = add_to_list(si, pnum, ec, 0, &si->free);
+ err = add_to_list(ai, pnum, UBI_UNKNOWN,
+ UBI_UNKNOWN, ec, 0, &ai->free);
if (err)
return err;
goto adjust_mean_ec;
@@ -1019,7 +999,8 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
case UBI_COMPAT_DELETE:
ubi_msg("\"delete\" compatible internal volume %d:%d"
" found, will remove it", vol_id, lnum);
- err = add_to_list(si, pnum, ec, 1, &si->erase);
+ err = add_to_list(ai, pnum, vol_id, lnum,
+ ec, 1, &ai->erase);
if (err)
return err;
return 0;
@@ -1034,7 +1015,8 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
case UBI_COMPAT_PRESERVE:
ubi_msg("\"preserve\" compatible internal volume %d:%d"
" found", vol_id, lnum);
- err = add_to_list(si, pnum, ec, 0, &si->alien);
+ err = add_to_list(ai, pnum, vol_id, lnum,
+ ec, 0, &ai->alien);
if (err)
return err;
return 0;
@@ -1049,40 +1031,40 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
if (ec_err)
ubi_warn("valid VID header but corrupted EC header at PEB %d",
pnum);
- err = ubi_scan_add_used(ubi, si, pnum, ec, vidh, bitflips);
+ err = ubi_add_to_av(ubi, ai, pnum, ec, vidh, bitflips);
if (err)
return err;
adjust_mean_ec:
if (!ec_err) {
- si->ec_sum += ec;
- si->ec_count += 1;
- if (ec > si->max_ec)
- si->max_ec = ec;
- if (ec < si->min_ec)
- si->min_ec = ec;
+ ai->ec_sum += ec;
+ ai->ec_count += 1;
+ if (ec > ai->max_ec)
+ ai->max_ec = ec;
+ if (ec < ai->min_ec)
+ ai->min_ec = ec;
}
return 0;
}
/**
- * check_what_we_have - check what PEB were found by scanning.
+ * late_analysis - analyze the overall situation with PEB.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
- * This is a helper function which takes a look what PEBs were found by
- * scanning, and decides whether the flash is empty and should be formatted and
- * whether there are too many corrupted PEBs and we should not attach this
- * MTD device. Returns zero if we should proceed with attaching the MTD device,
- * and %-EINVAL if we should not.
+ * This is a helper function which takes a look what PEBs we have after we
+ * gather information about all of them ("ai" is compete). It decides whether
+ * the flash is empty and should be formatted of whether there are too many
+ * corrupted PEBs and we should not attach this MTD device. Returns zero if we
+ * should proceed with attaching the MTD device, and %-EINVAL if we should not.
*/
-static int check_what_we_have(struct ubi_device *ubi, struct ubi_scan_info *si)
+static int late_analysis(struct ubi_device *ubi, struct ubi_attach_info *ai)
{
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_peb *aeb;
int max_corr, peb_count;
- peb_count = ubi->peb_count - si->bad_peb_count - si->alien_peb_count;
+ peb_count = ubi->peb_count - ai->bad_peb_count - ai->alien_peb_count;
max_corr = peb_count / 20 ?: 8;
/*
@@ -1090,25 +1072,25 @@ static int check_what_we_have(struct ubi_device *ubi, struct ubi_scan_info *si)
* unclean reboots. However, many of them may indicate some problems
* with the flash HW or driver.
*/
- if (si->corr_peb_count) {
+ if (ai->corr_peb_count) {
ubi_err("%d PEBs are corrupted and preserved",
- si->corr_peb_count);
+ ai->corr_peb_count);
printk(KERN_ERR "Corrupted PEBs are:");
- list_for_each_entry(seb, &si->corr, u.list)
- printk(KERN_CONT " %d", seb->pnum);
+ list_for_each_entry(aeb, &ai->corr, u.list)
+ printk(KERN_CONT " %d", aeb->pnum);
printk(KERN_CONT "\n");
/*
* If too many PEBs are corrupted, we refuse attaching,
* otherwise, only print a warning.
*/
- if (si->corr_peb_count >= max_corr) {
+ if (ai->corr_peb_count >= max_corr) {
ubi_err("too many corrupted PEBs, refusing");
return -EINVAL;
}
}
- if (si->empty_peb_count + si->maybe_bad_peb_count == peb_count) {
+ if (ai->empty_peb_count + ai->maybe_bad_peb_count == peb_count) {
/*
* All PEBs are empty, or almost all - a couple PEBs look like
* they may be bad PEBs which were not marked as bad yet.
@@ -1124,8 +1106,8 @@ static int check_what_we_have(struct ubi_device *ubi, struct ubi_scan_info *si)
* 2. Flash contains non-UBI data and we do not want to format
* it and destroy possibly important information.
*/
- if (si->maybe_bad_peb_count <= 2) {
- si->is_empty = 1;
+ if (ai->maybe_bad_peb_count <= 2) {
+ ai->is_empty = 1;
ubi_msg("empty MTD device detected");
get_random_bytes(&ubi->image_seq,
sizeof(ubi->image_seq));
@@ -1141,40 +1123,41 @@ static int check_what_we_have(struct ubi_device *ubi, struct ubi_scan_info *si)
}
/**
- * ubi_scan - scan an MTD device.
+ * scan_all - scan entire MTD device.
* @ubi: UBI device description object
*
* This function does full scanning of an MTD device and returns complete
- * information about it. In case of failure, an error code is returned.
+ * information about it in form of a "struct ubi_attach_info" object. In case
+ * of failure, an error code is returned.
*/
-struct ubi_scan_info *ubi_scan(struct ubi_device *ubi)
+static struct ubi_attach_info *scan_all(struct ubi_device *ubi)
{
int err, pnum;
struct rb_node *rb1, *rb2;
- struct ubi_scan_volume *sv;
- struct ubi_scan_leb *seb;
- struct ubi_scan_info *si;
+ struct ubi_ainf_volume *av;
+ struct ubi_ainf_peb *aeb;
+ struct ubi_attach_info *ai;
- si = kzalloc(sizeof(struct ubi_scan_info), GFP_KERNEL);
- if (!si)
+ ai = kzalloc(sizeof(struct ubi_attach_info), GFP_KERNEL);
+ if (!ai)
return ERR_PTR(-ENOMEM);
- INIT_LIST_HEAD(&si->corr);
- INIT_LIST_HEAD(&si->free);
- INIT_LIST_HEAD(&si->erase);
- INIT_LIST_HEAD(&si->alien);
- si->volumes = RB_ROOT;
+ INIT_LIST_HEAD(&ai->corr);
+ INIT_LIST_HEAD(&ai->free);
+ INIT_LIST_HEAD(&ai->erase);
+ INIT_LIST_HEAD(&ai->alien);
+ ai->volumes = RB_ROOT;
err = -ENOMEM;
- si->scan_leb_slab = kmem_cache_create("ubi_scan_leb_slab",
- sizeof(struct ubi_scan_leb),
- 0, 0, NULL);
- if (!si->scan_leb_slab)
- goto out_si;
+ ai->aeb_slab_cache = kmem_cache_create("ubi_aeb_slab_cache",
+ sizeof(struct ubi_ainf_peb),
+ 0, 0, NULL);
+ if (!ai->aeb_slab_cache)
+ goto out_ai;
ech = kzalloc(ubi->ec_hdr_alsize, GFP_KERNEL);
if (!ech)
- goto out_si;
+ goto out_ai;
vidh = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);
if (!vidh)
@@ -1184,7 +1167,7 @@ struct ubi_scan_info *ubi_scan(struct ubi_device *ubi)
cond_resched();
dbg_gen("process PEB %d", pnum);
- err = process_eb(ubi, si, pnum);
+ err = scan_peb(ubi, ai, pnum);
if (err < 0)
goto out_vidh;
}
@@ -1192,10 +1175,10 @@ struct ubi_scan_info *ubi_scan(struct ubi_device *ubi)
dbg_msg("scanning is finished");
/* Calculate mean erase counter */
- if (si->ec_count)
- si->mean_ec = div_u64(si->ec_sum, si->ec_count);
+ if (ai->ec_count)
+ ai->mean_ec = div_u64(ai->ec_sum, ai->ec_count);
- err = check_what_we_have(ubi, si);
+ err = late_analysis(ubi, ai);
if (err)
goto out_vidh;
@@ -1203,55 +1186,102 @@ struct ubi_scan_info *ubi_scan(struct ubi_device *ubi)
* In case of unknown erase counter we use the mean erase counter
* value.
*/
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) {
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb)
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb) {
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb)
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
}
- list_for_each_entry(seb, &si->free, u.list) {
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
+ list_for_each_entry(aeb, &ai->free, u.list) {
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
}
- list_for_each_entry(seb, &si->corr, u.list)
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
+ list_for_each_entry(aeb, &ai->corr, u.list)
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
- list_for_each_entry(seb, &si->erase, u.list)
- if (seb->ec == UBI_SCAN_UNKNOWN_EC)
- seb->ec = si->mean_ec;
+ list_for_each_entry(aeb, &ai->erase, u.list)
+ if (aeb->ec == UBI_UNKNOWN)
+ aeb->ec = ai->mean_ec;
- err = paranoid_check_si(ubi, si);
+ err = self_check_ai(ubi, ai);
if (err)
goto out_vidh;
ubi_free_vid_hdr(ubi, vidh);
kfree(ech);
- return si;
+ return ai;
out_vidh:
ubi_free_vid_hdr(ubi, vidh);
out_ech:
kfree(ech);
-out_si:
- ubi_scan_destroy_si(si);
+out_ai:
+ ubi_destroy_ai(ai);
return ERR_PTR(err);
}
/**
- * destroy_sv - free the scanning volume information
- * @sv: scanning volume information
- * @si: scanning information
+ * ubi_attach - attach an MTD device.
+ * @ubi: UBI device descriptor
*
- * This function destroys the volume RB-tree (@sv->root) and the scanning
- * volume information.
+ * This function returns zero in case of success and a negative error code in
+ * case of failure.
*/
-static void destroy_sv(struct ubi_scan_info *si, struct ubi_scan_volume *sv)
+int ubi_attach(struct ubi_device *ubi)
{
- struct ubi_scan_leb *seb;
- struct rb_node *this = sv->root.rb_node;
+ int err;
+ struct ubi_attach_info *ai;
+
+ ai = scan_all(ubi);
+ if (IS_ERR(ai))
+ return PTR_ERR(ai);
+
+ ubi->bad_peb_count = ai->bad_peb_count;
+ ubi->good_peb_count = ubi->peb_count - ubi->bad_peb_count;
+ ubi->corr_peb_count = ai->corr_peb_count;
+ ubi->max_ec = ai->max_ec;
+ ubi->mean_ec = ai->mean_ec;
+ ubi_msg("max. sequence number: %llu", ai->max_sqnum);
+
+ err = ubi_read_volume_table(ubi, ai);
+ if (err)
+ goto out_ai;
+
+ err = ubi_wl_init(ubi, ai);
+ if (err)
+ goto out_vtbl;
+
+ err = ubi_eba_init(ubi, ai);
+ if (err)
+ goto out_wl;
+
+ ubi_destroy_ai(ai);
+ return 0;
+
+out_wl:
+ ubi_wl_close(ubi);
+out_vtbl:
+ ubi_free_internal_volumes(ubi);
+ vfree(ubi->vtbl);
+out_ai:
+ ubi_destroy_ai(ai);
+ return err;
+}
+
+/**
+ * destroy_av - free volume attaching information.
+ * @av: volume attaching information
+ * @ai: attaching information
+ *
+ * This function destroys the volume attaching information.
+ */
+static void destroy_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av)
+{
+ struct ubi_ainf_peb *aeb;
+ struct rb_node *this = av->root.rb_node;
while (this) {
if (this->rb_left)
@@ -1259,224 +1289,222 @@ static void destroy_sv(struct ubi_scan_info *si, struct ubi_scan_volume *sv)
else if (this->rb_right)
this = this->rb_right;
else {
- seb = rb_entry(this, struct ubi_scan_leb, u.rb);
+ aeb = rb_entry(this, struct ubi_ainf_peb, u.rb);
this = rb_parent(this);
if (this) {
- if (this->rb_left == &seb->u.rb)
+ if (this->rb_left == &aeb->u.rb)
this->rb_left = NULL;
else
this->rb_right = NULL;
}
- kmem_cache_free(si->scan_leb_slab, seb);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
}
}
- kfree(sv);
+ kfree(av);
}
/**
- * ubi_scan_destroy_si - destroy scanning information.
- * @si: scanning information
+ * ubi_destroy_ai - destroy attaching information.
+ * @ai: attaching information
*/
-void ubi_scan_destroy_si(struct ubi_scan_info *si)
+void ubi_destroy_ai(struct ubi_attach_info *ai)
{
- struct ubi_scan_leb *seb, *seb_tmp;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_peb *aeb, *aeb_tmp;
+ struct ubi_ainf_volume *av;
struct rb_node *rb;
- list_for_each_entry_safe(seb, seb_tmp, &si->alien, u.list) {
- list_del(&seb->u.list);
- kmem_cache_free(si->scan_leb_slab, seb);
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->alien, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
}
- list_for_each_entry_safe(seb, seb_tmp, &si->erase, u.list) {
- list_del(&seb->u.list);
- kmem_cache_free(si->scan_leb_slab, seb);
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->erase, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
}
- list_for_each_entry_safe(seb, seb_tmp, &si->corr, u.list) {
- list_del(&seb->u.list);
- kmem_cache_free(si->scan_leb_slab, seb);
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->corr, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
}
- list_for_each_entry_safe(seb, seb_tmp, &si->free, u.list) {
- list_del(&seb->u.list);
- kmem_cache_free(si->scan_leb_slab, seb);
+ list_for_each_entry_safe(aeb, aeb_tmp, &ai->free, u.list) {
+ list_del(&aeb->u.list);
+ kmem_cache_free(ai->aeb_slab_cache, aeb);
}
/* Destroy the volume RB-tree */
- rb = si->volumes.rb_node;
+ rb = ai->volumes.rb_node;
while (rb) {
if (rb->rb_left)
rb = rb->rb_left;
else if (rb->rb_right)
rb = rb->rb_right;
else {
- sv = rb_entry(rb, struct ubi_scan_volume, rb);
+ av = rb_entry(rb, struct ubi_ainf_volume, rb);
rb = rb_parent(rb);
if (rb) {
- if (rb->rb_left == &sv->rb)
+ if (rb->rb_left == &av->rb)
rb->rb_left = NULL;
else
rb->rb_right = NULL;
}
- destroy_sv(si, sv);
+ destroy_av(ai, av);
}
}
- if (si->scan_leb_slab)
- kmem_cache_destroy(si->scan_leb_slab);
+ if (ai->aeb_slab_cache)
+ kmem_cache_destroy(ai->aeb_slab_cache);
- kfree(si);
+ kfree(ai);
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_check_si - check the scanning information.
+ * self_check_ai - check the attaching information.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
- * This function returns zero if the scanning information is all right, and a
+ * This function returns zero if the attaching information is all right, and a
* negative error code if not or if an error occurred.
*/
-static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si)
+static int self_check_ai(struct ubi_device *ubi, struct ubi_attach_info *ai)
{
int pnum, err, vols_found = 0;
struct rb_node *rb1, *rb2;
- struct ubi_scan_volume *sv;
- struct ubi_scan_leb *seb, *last_seb;
+ struct ubi_ainf_volume *av;
+ struct ubi_ainf_peb *aeb, *last_aeb;
uint8_t *buf;
if (!ubi->dbg->chk_gen)
return 0;
/*
- * At first, check that scanning information is OK.
+ * At first, check that attaching information is OK.
*/
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) {
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb) {
int leb_count = 0;
cond_resched();
vols_found += 1;
- if (si->is_empty) {
+ if (ai->is_empty) {
ubi_err("bad is_empty flag");
- goto bad_sv;
+ goto bad_av;
}
- if (sv->vol_id < 0 || sv->highest_lnum < 0 ||
- sv->leb_count < 0 || sv->vol_type < 0 || sv->used_ebs < 0 ||
- sv->data_pad < 0 || sv->last_data_size < 0) {
+ if (av->vol_id < 0 || av->highest_lnum < 0 ||
+ av->leb_count < 0 || av->vol_type < 0 || av->used_ebs < 0 ||
+ av->data_pad < 0 || av->last_data_size < 0) {
ubi_err("negative values");
- goto bad_sv;
+ goto bad_av;
}
- if (sv->vol_id >= UBI_MAX_VOLUMES &&
- sv->vol_id < UBI_INTERNAL_VOL_START) {
+ if (av->vol_id >= UBI_MAX_VOLUMES &&
+ av->vol_id < UBI_INTERNAL_VOL_START) {
ubi_err("bad vol_id");
- goto bad_sv;
+ goto bad_av;
}
- if (sv->vol_id > si->highest_vol_id) {
+ if (av->vol_id > ai->highest_vol_id) {
ubi_err("highest_vol_id is %d, but vol_id %d is there",
- si->highest_vol_id, sv->vol_id);
+ ai->highest_vol_id, av->vol_id);
goto out;
}
- if (sv->vol_type != UBI_DYNAMIC_VOLUME &&
- sv->vol_type != UBI_STATIC_VOLUME) {
+ if (av->vol_type != UBI_DYNAMIC_VOLUME &&
+ av->vol_type != UBI_STATIC_VOLUME) {
ubi_err("bad vol_type");
- goto bad_sv;
+ goto bad_av;
}
- if (sv->data_pad > ubi->leb_size / 2) {
+ if (av->data_pad > ubi->leb_size / 2) {
ubi_err("bad data_pad");
- goto bad_sv;
+ goto bad_av;
}
- last_seb = NULL;
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb) {
+ last_aeb = NULL;
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb) {
cond_resched();
- last_seb = seb;
+ last_aeb = aeb;
leb_count += 1;
- if (seb->pnum < 0 || seb->ec < 0) {
+ if (aeb->pnum < 0 || aeb->ec < 0) {
ubi_err("negative values");
- goto bad_seb;
+ goto bad_aeb;
}
- if (seb->ec < si->min_ec) {
- ubi_err("bad si->min_ec (%d), %d found",
- si->min_ec, seb->ec);
- goto bad_seb;
+ if (aeb->ec < ai->min_ec) {
+ ubi_err("bad ai->min_ec (%d), %d found",
+ ai->min_ec, aeb->ec);
+ goto bad_aeb;
}
- if (seb->ec > si->max_ec) {
- ubi_err("bad si->max_ec (%d), %d found",
- si->max_ec, seb->ec);
- goto bad_seb;
+ if (aeb->ec > ai->max_ec) {
+ ubi_err("bad ai->max_ec (%d), %d found",
+ ai->max_ec, aeb->ec);
+ goto bad_aeb;
}
- if (seb->pnum >= ubi->peb_count) {
+ if (aeb->pnum >= ubi->peb_count) {
ubi_err("too high PEB number %d, total PEBs %d",
- seb->pnum, ubi->peb_count);
- goto bad_seb;
+ aeb->pnum, ubi->peb_count);
+ goto bad_aeb;
}
- if (sv->vol_type == UBI_STATIC_VOLUME) {
- if (seb->lnum >= sv->used_ebs) {
+ if (av->vol_type == UBI_STATIC_VOLUME) {
+ if (aeb->lnum >= av->used_ebs) {
ubi_err("bad lnum or used_ebs");
- goto bad_seb;
+ goto bad_aeb;
}
} else {
- if (sv->used_ebs != 0) {
+ if (av->used_ebs != 0) {
ubi_err("non-zero used_ebs");
- goto bad_seb;
+ goto bad_aeb;
}
}
- if (seb->lnum > sv->highest_lnum) {
+ if (aeb->lnum > av->highest_lnum) {
ubi_err("incorrect highest_lnum or lnum");
- goto bad_seb;
+ goto bad_aeb;
}
}
- if (sv->leb_count != leb_count) {
+ if (av->leb_count != leb_count) {
ubi_err("bad leb_count, %d objects in the tree",
leb_count);
- goto bad_sv;
+ goto bad_av;
}
- if (!last_seb)
+ if (!last_aeb)
continue;
- seb = last_seb;
+ aeb = last_aeb;
- if (seb->lnum != sv->highest_lnum) {
+ if (aeb->lnum != av->highest_lnum) {
ubi_err("bad highest_lnum");
- goto bad_seb;
+ goto bad_aeb;
}
}
- if (vols_found != si->vols_found) {
- ubi_err("bad si->vols_found %d, should be %d",
- si->vols_found, vols_found);
+ if (vols_found != ai->vols_found) {
+ ubi_err("bad ai->vols_found %d, should be %d",
+ ai->vols_found, vols_found);
goto out;
}
- /* Check that scanning information is correct */
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) {
- last_seb = NULL;
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb) {
+ /* Check that attaching information is correct */
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb) {
+ last_aeb = NULL;
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb) {
int vol_type;
cond_resched();
- last_seb = seb;
+ last_aeb = aeb;
- err = ubi_io_read_vid_hdr(ubi, seb->pnum, vidh, 1);
+ err = ubi_io_read_vid_hdr(ubi, aeb->pnum, vidh, 1);
if (err && err != UBI_IO_BITFLIPS) {
ubi_err("VID header is not OK (%d)", err);
if (err > 0)
@@ -1486,52 +1514,52 @@ static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si)
vol_type = vidh->vol_type == UBI_VID_DYNAMIC ?
UBI_DYNAMIC_VOLUME : UBI_STATIC_VOLUME;
- if (sv->vol_type != vol_type) {
+ if (av->vol_type != vol_type) {
ubi_err("bad vol_type");
goto bad_vid_hdr;
}
- if (seb->sqnum != be64_to_cpu(vidh->sqnum)) {
- ubi_err("bad sqnum %llu", seb->sqnum);
+ if (aeb->sqnum != be64_to_cpu(vidh->sqnum)) {
+ ubi_err("bad sqnum %llu", aeb->sqnum);
goto bad_vid_hdr;
}
- if (sv->vol_id != be32_to_cpu(vidh->vol_id)) {
- ubi_err("bad vol_id %d", sv->vol_id);
+ if (av->vol_id != be32_to_cpu(vidh->vol_id)) {
+ ubi_err("bad vol_id %d", av->vol_id);
goto bad_vid_hdr;
}
- if (sv->compat != vidh->compat) {
+ if (av->compat != vidh->compat) {
ubi_err("bad compat %d", vidh->compat);
goto bad_vid_hdr;
}
- if (seb->lnum != be32_to_cpu(vidh->lnum)) {
- ubi_err("bad lnum %d", seb->lnum);
+ if (aeb->lnum != be32_to_cpu(vidh->lnum)) {
+ ubi_err("bad lnum %d", aeb->lnum);
goto bad_vid_hdr;
}
- if (sv->used_ebs != be32_to_cpu(vidh->used_ebs)) {
- ubi_err("bad used_ebs %d", sv->used_ebs);
+ if (av->used_ebs != be32_to_cpu(vidh->used_ebs)) {
+ ubi_err("bad used_ebs %d", av->used_ebs);
goto bad_vid_hdr;
}
- if (sv->data_pad != be32_to_cpu(vidh->data_pad)) {
- ubi_err("bad data_pad %d", sv->data_pad);
+ if (av->data_pad != be32_to_cpu(vidh->data_pad)) {
+ ubi_err("bad data_pad %d", av->data_pad);
goto bad_vid_hdr;
}
}
- if (!last_seb)
+ if (!last_aeb)
continue;
- if (sv->highest_lnum != be32_to_cpu(vidh->lnum)) {
- ubi_err("bad highest_lnum %d", sv->highest_lnum);
+ if (av->highest_lnum != be32_to_cpu(vidh->lnum)) {
+ ubi_err("bad highest_lnum %d", av->highest_lnum);
goto bad_vid_hdr;
}
- if (sv->last_data_size != be32_to_cpu(vidh->data_size)) {
- ubi_err("bad last_data_size %d", sv->last_data_size);
+ if (av->last_data_size != be32_to_cpu(vidh->data_size)) {
+ ubi_err("bad last_data_size %d", av->last_data_size);
goto bad_vid_hdr;
}
}
@@ -1553,21 +1581,21 @@ static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si)
buf[pnum] = 1;
}
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb)
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb)
- buf[seb->pnum] = 1;
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb)
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb)
+ buf[aeb->pnum] = 1;
- list_for_each_entry(seb, &si->free, u.list)
- buf[seb->pnum] = 1;
+ list_for_each_entry(aeb, &ai->free, u.list)
+ buf[aeb->pnum] = 1;
- list_for_each_entry(seb, &si->corr, u.list)
- buf[seb->pnum] = 1;
+ list_for_each_entry(aeb, &ai->corr, u.list)
+ buf[aeb->pnum] = 1;
- list_for_each_entry(seb, &si->erase, u.list)
- buf[seb->pnum] = 1;
+ list_for_each_entry(aeb, &ai->erase, u.list)
+ buf[aeb->pnum] = 1;
- list_for_each_entry(seb, &si->alien, u.list)
- buf[seb->pnum] = 1;
+ list_for_each_entry(aeb, &ai->alien, u.list)
+ buf[aeb->pnum] = 1;
err = 0;
for (pnum = 0; pnum < ubi->peb_count; pnum++)
@@ -1581,25 +1609,23 @@ static int paranoid_check_si(struct ubi_device *ubi, struct ubi_scan_info *si)
goto out;
return 0;
-bad_seb:
- ubi_err("bad scanning information about LEB %d", seb->lnum);
- ubi_dbg_dump_seb(seb, 0);
- ubi_dbg_dump_sv(sv);
+bad_aeb:
+ ubi_err("bad attaching information about LEB %d", aeb->lnum);
+ ubi_dump_aeb(aeb, 0);
+ ubi_dump_av(av);
goto out;
-bad_sv:
- ubi_err("bad scanning information about volume %d", sv->vol_id);
- ubi_dbg_dump_sv(sv);
+bad_av:
+ ubi_err("bad attaching information about volume %d", av->vol_id);
+ ubi_dump_av(av);
goto out;
bad_vid_hdr:
- ubi_err("bad scanning information about volume %d", sv->vol_id);
- ubi_dbg_dump_sv(sv);
- ubi_dbg_dump_vid_hdr(vidh);
+ ubi_err("bad attaching information about volume %d", av->vol_id);
+ ubi_dump_av(av);
+ ubi_dump_vid_hdr(vidh);
out:
- ubi_dbg_dump_stack();
+ dump_stack();
return -EINVAL;
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 0fde9fc7d2e..2c5ed5ca9c3 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -27,10 +27,6 @@
* module load parameters or the kernel boot parameters. If MTD devices were
* specified, UBI does not attach any MTD device, but it is possible to do
* later using the "UBI control device".
- *
- * At the moment we only attach UBI devices by scanning, which will become a
- * bottleneck when flashes reach certain large size. Then one may improve UBI
- * and add other methods, although it does not seem to be easy to do.
*/
#include <linux/err.h>
@@ -554,10 +550,10 @@ static void uif_close(struct ubi_device *ubi)
}
/**
- * free_internal_volumes - free internal volumes.
+ * ubi_free_internal_volumes - free internal volumes.
* @ubi: UBI device description object
*/
-static void free_internal_volumes(struct ubi_device *ubi)
+void ubi_free_internal_volumes(struct ubi_device *ubi)
{
int i;
@@ -569,59 +565,6 @@ static void free_internal_volumes(struct ubi_device *ubi)
}
/**
- * attach_by_scanning - attach an MTD device using scanning method.
- * @ubi: UBI device descriptor
- *
- * This function returns zero in case of success and a negative error code in
- * case of failure.
- *
- * Note, currently this is the only method to attach UBI devices. Hopefully in
- * the future we'll have more scalable attaching methods and avoid full media
- * scanning. But even in this case scanning will be needed as a fall-back
- * attaching method if there are some on-flash table corruptions.
- */
-static int attach_by_scanning(struct ubi_device *ubi)
-{
- int err;
- struct ubi_scan_info *si;
-
- si = ubi_scan(ubi);
- if (IS_ERR(si))
- return PTR_ERR(si);
-
- ubi->bad_peb_count = si->bad_peb_count;
- ubi->good_peb_count = ubi->peb_count - ubi->bad_peb_count;
- ubi->corr_peb_count = si->corr_peb_count;
- ubi->max_ec = si->max_ec;
- ubi->mean_ec = si->mean_ec;
- ubi_msg("max. sequence number: %llu", si->max_sqnum);
-
- err = ubi_read_volume_table(ubi, si);
- if (err)
- goto out_si;
-
- err = ubi_wl_init_scan(ubi, si);
- if (err)
- goto out_vtbl;
-
- err = ubi_eba_init_scan(ubi, si);
- if (err)
- goto out_wl;
-
- ubi_scan_destroy_si(si);
- return 0;
-
-out_wl:
- ubi_wl_close(ubi);
-out_vtbl:
- free_internal_volumes(ubi);
- vfree(ubi->vtbl);
-out_si:
- ubi_scan_destroy_si(si);
- return err;
-}
-
-/**
* io_init - initialize I/O sub-system for a given UBI device.
* @ubi: UBI device description object
*
@@ -790,11 +733,11 @@ static int io_init(struct ubi_device *ubi)
ubi_msg("data offset: %d", ubi->leb_start);
/*
- * Note, ideally, we have to initialize ubi->bad_peb_count here. But
+ * Note, ideally, we have to initialize @ubi->bad_peb_count here. But
* unfortunately, MTD does not provide this information. We should loop
* over all physical eraseblocks and invoke mtd->block_is_bad() for
- * each physical eraseblock. So, we skip ubi->bad_peb_count
- * uninitialized and initialize it after scanning.
+ * each physical eraseblock. So, we leave @ubi->bad_peb_count
+ * uninitialized so far.
*/
return 0;
@@ -805,7 +748,7 @@ static int io_init(struct ubi_device *ubi)
* @ubi: UBI device description object
* @vol_id: ID of the volume to re-size
*
- * This function re-sizes the volume marked by the @UBI_VTBL_AUTORESIZE_FLG in
+ * This function re-sizes the volume marked by the %UBI_VTBL_AUTORESIZE_FLG in
* the volume table to the largest possible size. See comments in ubi-header.h
* for more description of the flag. Returns zero in case of success and a
* negative error code in case of failure.
@@ -881,7 +824,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
for (i = 0; i < UBI_MAX_DEVICES; i++) {
ubi = ubi_devices[i];
if (ubi && mtd->index == ubi->mtd->index) {
- dbg_err("mtd%d is already attached to ubi%d",
+ ubi_err("mtd%d is already attached to ubi%d",
mtd->index, i);
return -EEXIST;
}
@@ -907,7 +850,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
if (!ubi_devices[ubi_num])
break;
if (ubi_num == UBI_MAX_DEVICES) {
- dbg_err("only %d UBI devices may be created",
+ ubi_err("only %d UBI devices may be created",
UBI_MAX_DEVICES);
return -ENFILE;
}
@@ -917,7 +860,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
/* Make sure ubi_num is not busy */
if (ubi_devices[ubi_num]) {
- dbg_err("ubi%d already exists", ubi_num);
+ ubi_err("ubi%d already exists", ubi_num);
return -EEXIST;
}
}
@@ -937,7 +880,7 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
spin_lock_init(&ubi->volumes_lock);
ubi_msg("attaching mtd%d to ubi%d", mtd->index, ubi_num);
- dbg_msg("sizeof(struct ubi_scan_leb) %zu", sizeof(struct ubi_scan_leb));
+ dbg_msg("sizeof(struct ubi_ainf_peb) %zu", sizeof(struct ubi_ainf_peb));
dbg_msg("sizeof(struct ubi_wl_entry) %zu", sizeof(struct ubi_wl_entry));
err = io_init(ubi);
@@ -953,9 +896,9 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num, int vid_hdr_offset)
if (err)
goto out_free;
- err = attach_by_scanning(ubi);
+ err = ubi_attach(ubi);
if (err) {
- dbg_err("failed to attach by scanning, error %d", err);
+ ubi_err("failed to attach mtd%d, error %d", mtd->index, err);
goto out_debugging;
}
@@ -1020,7 +963,7 @@ out_uif:
uif_close(ubi);
out_detach:
ubi_wl_close(ubi);
- free_internal_volumes(ubi);
+ ubi_free_internal_volumes(ubi);
vfree(ubi->vtbl);
out_debugging:
ubi_debugging_exit_dev(ubi);
@@ -1092,7 +1035,7 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway)
ubi_debugfs_exit_dev(ubi);
uif_close(ubi);
ubi_wl_close(ubi);
- free_internal_volumes(ubi);
+ ubi_free_internal_volumes(ubi);
vfree(ubi->vtbl);
put_mtd_device(ubi->mtd);
ubi_debugging_exit_dev(ubi);
diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index ad76592fb2f..acec85deb6a 100644
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -63,7 +63,7 @@ static int get_exclusive(struct ubi_volume_desc *desc)
users = vol->readers + vol->writers + vol->exclusive;
ubi_assert(users > 0);
if (users > 1) {
- dbg_err("%d users for volume %d", users, vol->vol_id);
+ ubi_err("%d users for volume %d", users, vol->vol_id);
err = -EBUSY;
} else {
vol->readers = vol->writers = 0;
@@ -159,7 +159,7 @@ static loff_t vol_cdev_llseek(struct file *file, loff_t offset, int origin)
if (vol->updating) {
/* Update is in progress, seeking is prohibited */
- dbg_err("updating");
+ ubi_err("updating");
return -EBUSY;
}
@@ -178,7 +178,7 @@ static loff_t vol_cdev_llseek(struct file *file, loff_t offset, int origin)
}
if (new_offset < 0 || new_offset > vol->used_bytes) {
- dbg_err("bad seek %lld", new_offset);
+ ubi_err("bad seek %lld", new_offset);
return -EINVAL;
}
@@ -216,11 +216,11 @@ static ssize_t vol_cdev_read(struct file *file, __user char *buf, size_t count,
count, *offp, vol->vol_id);
if (vol->updating) {
- dbg_err("updating");
+ ubi_err("updating");
return -EBUSY;
}
if (vol->upd_marker) {
- dbg_err("damaged volume, update marker is set");
+ ubi_err("damaged volume, update marker is set");
return -EBADF;
}
if (*offp == vol->used_bytes || count == 0)
@@ -300,7 +300,7 @@ static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf,
lnum = div_u64_rem(*offp, vol->usable_leb_size, &off);
if (off & (ubi->min_io_size - 1)) {
- dbg_err("unaligned position");
+ ubi_err("unaligned position");
return -EINVAL;
}
@@ -309,7 +309,7 @@ static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf,
/* We can write only in fractions of the minimum I/O unit */
if (count & (ubi->min_io_size - 1)) {
- dbg_err("unaligned write length");
+ ubi_err("unaligned write length");
return -EINVAL;
}
@@ -334,8 +334,7 @@ static ssize_t vol_cdev_direct_write(struct file *file, const char __user *buf,
break;
}
- err = ubi_eba_write_leb(ubi, vol, lnum, tbuf, off, len,
- UBI_UNKNOWN);
+ err = ubi_eba_write_leb(ubi, vol, lnum, tbuf, off, len);
if (err)
break;
@@ -477,9 +476,6 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
if (req.lnum < 0 || req.lnum >= vol->reserved_pebs ||
req.bytes < 0 || req.lnum >= vol->usable_leb_size)
break;
- if (req.dtype != UBI_LONGTERM && req.dtype != UBI_SHORTTERM &&
- req.dtype != UBI_UNKNOWN)
- break;
err = get_exclusive(desc);
if (err < 0)
@@ -518,7 +514,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
if (err)
break;
- err = ubi_wl_flush(ubi);
+ err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);
break;
}
@@ -532,7 +528,7 @@ static long vol_cdev_ioctl(struct file *file, unsigned int cmd,
err = -EFAULT;
break;
}
- err = ubi_leb_map(desc, req.lnum, req.dtype);
+ err = ubi_leb_map(desc, req.lnum);
break;
}
@@ -647,8 +643,8 @@ static int verify_mkvol_req(const struct ubi_device *ubi,
return 0;
bad:
- dbg_err("bad volume creation request");
- ubi_dbg_dump_mkvol_req(req);
+ ubi_err("bad volume creation request");
+ ubi_dump_mkvol_req(req);
return err;
}
@@ -713,12 +709,12 @@ static int rename_volumes(struct ubi_device *ubi,
for (i = 0; i < req->count - 1; i++) {
for (n = i + 1; n < req->count; n++) {
if (req->ents[i].vol_id == req->ents[n].vol_id) {
- dbg_err("duplicated volume id %d",
+ ubi_err("duplicated volume id %d",
req->ents[i].vol_id);
return -EINVAL;
}
if (!strcmp(req->ents[i].name, req->ents[n].name)) {
- dbg_err("duplicated volume name \"%s\"",
+ ubi_err("duplicated volume name \"%s\"",
req->ents[i].name);
return -EINVAL;
}
@@ -741,7 +737,7 @@ static int rename_volumes(struct ubi_device *ubi,
re->desc = ubi_open_volume(ubi->ubi_num, vol_id, UBI_EXCLUSIVE);
if (IS_ERR(re->desc)) {
err = PTR_ERR(re->desc);
- dbg_err("cannot open volume %d, error %d", vol_id, err);
+ ubi_err("cannot open volume %d, error %d", vol_id, err);
kfree(re);
goto out_free;
}
@@ -800,7 +796,7 @@ static int rename_volumes(struct ubi_device *ubi,
continue;
/* The volume exists but busy, or an error occurred */
- dbg_err("cannot open volume \"%s\", error %d",
+ ubi_err("cannot open volume \"%s\", error %d",
re->new_name, err);
goto out_free;
}
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
index 61af9bb560a..9f957c2d48e 100644
--- a/drivers/mtd/ubi/debug.c
+++ b/drivers/mtd/ubi/debug.c
@@ -18,24 +18,49 @@
* Author: Artem Bityutskiy (Битюцкий Артём)
*/
-/*
- * Here we keep all the UBI debugging stuff which should normally be disabled
- * and compiled-out, but it is extremely helpful when hunting bugs or doing big
- * changes.
- */
-
-#ifdef CONFIG_MTD_UBI_DEBUG
-
#include "ubi.h"
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include <linux/module.h>
+
+/**
+ * ubi_dump_flash - dump a region of flash.
+ * @ubi: UBI device description object
+ * @pnum: the physical eraseblock number to dump
+ * @offset: the starting offset within the physical eraseblock to dump
+ * @len: the length of the region to dump
+ */
+void ubi_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len)
+{
+ int err;
+ size_t read;
+ void *buf;
+ loff_t addr = (loff_t)pnum * ubi->peb_size + offset;
+
+ buf = vmalloc(len);
+ if (!buf)
+ return;
+ err = mtd_read(ubi->mtd, addr, len, &read, buf);
+ if (err && err != -EUCLEAN) {
+ ubi_err("error %d while reading %d bytes from PEB %d:%d, "
+ "read %zd bytes", err, len, pnum, offset, read);
+ goto out;
+ }
+
+ ubi_msg("dumping %d bytes of data from PEB %d, offset %d",
+ len, pnum, offset);
+ print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
+out:
+ vfree(buf);
+ return;
+}
+
/**
- * ubi_dbg_dump_ec_hdr - dump an erase counter header.
+ * ubi_dump_ec_hdr - dump an erase counter header.
* @ec_hdr: the erase counter header to dump
*/
-void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr)
+void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr)
{
printk(KERN_DEBUG "Erase counter header dump:\n");
printk(KERN_DEBUG "\tmagic %#08x\n",
@@ -57,10 +82,10 @@ void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr)
}
/**
- * ubi_dbg_dump_vid_hdr - dump a volume identifier header.
+ * ubi_dump_vid_hdr - dump a volume identifier header.
* @vid_hdr: the volume identifier header to dump
*/
-void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr)
+void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr)
{
printk(KERN_DEBUG "Volume identifier header dump:\n");
printk(KERN_DEBUG "\tmagic %08x\n", be32_to_cpu(vid_hdr->magic));
@@ -82,10 +107,10 @@ void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr)
}
/**
- * ubi_dbg_dump_vol_info- dump volume information.
+ * ubi_dump_vol_info - dump volume information.
* @vol: UBI volume description object
*/
-void ubi_dbg_dump_vol_info(const struct ubi_volume *vol)
+void ubi_dump_vol_info(const struct ubi_volume *vol)
{
printk(KERN_DEBUG "Volume information dump:\n");
printk(KERN_DEBUG "\tvol_id %d\n", vol->vol_id);
@@ -112,11 +137,11 @@ void ubi_dbg_dump_vol_info(const struct ubi_volume *vol)
}
/**
- * ubi_dbg_dump_vtbl_record - dump a &struct ubi_vtbl_record object.
+ * ubi_dump_vtbl_record - dump a &struct ubi_vtbl_record object.
* @r: the object to dump
* @idx: volume table index
*/
-void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
+void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
{
int name_len = be16_to_cpu(r->name_len);
@@ -146,44 +171,44 @@ void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx)
}
/**
- * ubi_dbg_dump_sv - dump a &struct ubi_scan_volume object.
- * @sv: the object to dump
+ * ubi_dump_av - dump a &struct ubi_ainf_volume object.
+ * @av: the object to dump
*/
-void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv)
+void ubi_dump_av(const struct ubi_ainf_volume *av)
{
- printk(KERN_DEBUG "Volume scanning information dump:\n");
- printk(KERN_DEBUG "\tvol_id %d\n", sv->vol_id);
- printk(KERN_DEBUG "\thighest_lnum %d\n", sv->highest_lnum);
- printk(KERN_DEBUG "\tleb_count %d\n", sv->leb_count);
- printk(KERN_DEBUG "\tcompat %d\n", sv->compat);
- printk(KERN_DEBUG "\tvol_type %d\n", sv->vol_type);
- printk(KERN_DEBUG "\tused_ebs %d\n", sv->used_ebs);
- printk(KERN_DEBUG "\tlast_data_size %d\n", sv->last_data_size);
- printk(KERN_DEBUG "\tdata_pad %d\n", sv->data_pad);
+ printk(KERN_DEBUG "Volume attaching information dump:\n");
+ printk(KERN_DEBUG "\tvol_id %d\n", av->vol_id);
+ printk(KERN_DEBUG "\thighest_lnum %d\n", av->highest_lnum);
+ printk(KERN_DEBUG "\tleb_count %d\n", av->leb_count);
+ printk(KERN_DEBUG "\tcompat %d\n", av->compat);
+ printk(KERN_DEBUG "\tvol_type %d\n", av->vol_type);
+ printk(KERN_DEBUG "\tused_ebs %d\n", av->used_ebs);
+ printk(KERN_DEBUG "\tlast_data_size %d\n", av->last_data_size);
+ printk(KERN_DEBUG "\tdata_pad %d\n", av->data_pad);
}
/**
- * ubi_dbg_dump_seb - dump a &struct ubi_scan_leb object.
- * @seb: the object to dump
+ * ubi_dump_aeb - dump a &struct ubi_ainf_peb object.
+ * @aeb: the object to dump
* @type: object type: 0 - not corrupted, 1 - corrupted
*/
-void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type)
+void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type)
{
- printk(KERN_DEBUG "eraseblock scanning information dump:\n");
- printk(KERN_DEBUG "\tec %d\n", seb->ec);
- printk(KERN_DEBUG "\tpnum %d\n", seb->pnum);
+ printk(KERN_DEBUG "eraseblock attaching information dump:\n");
+ printk(KERN_DEBUG "\tec %d\n", aeb->ec);
+ printk(KERN_DEBUG "\tpnum %d\n", aeb->pnum);
if (type == 0) {
- printk(KERN_DEBUG "\tlnum %d\n", seb->lnum);
- printk(KERN_DEBUG "\tscrub %d\n", seb->scrub);
- printk(KERN_DEBUG "\tsqnum %llu\n", seb->sqnum);
+ printk(KERN_DEBUG "\tlnum %d\n", aeb->lnum);
+ printk(KERN_DEBUG "\tscrub %d\n", aeb->scrub);
+ printk(KERN_DEBUG "\tsqnum %llu\n", aeb->sqnum);
}
}
/**
- * ubi_dbg_dump_mkvol_req - dump a &struct ubi_mkvol_req object.
+ * ubi_dump_mkvol_req - dump a &struct ubi_mkvol_req object.
* @req: the object to dump
*/
-void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req)
+void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req)
{
char nm[17];
@@ -200,38 +225,6 @@ void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req)
}
/**
- * ubi_dbg_dump_flash - dump a region of flash.
- * @ubi: UBI device description object
- * @pnum: the physical eraseblock number to dump
- * @offset: the starting offset within the physical eraseblock to dump
- * @len: the length of the region to dump
- */
-void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len)
-{
- int err;
- size_t read;
- void *buf;
- loff_t addr = (loff_t)pnum * ubi->peb_size + offset;
-
- buf = vmalloc(len);
- if (!buf)
- return;
- err = mtd_read(ubi->mtd, addr, len, &read, buf);
- if (err && err != -EUCLEAN) {
- ubi_err("error %d while reading %d bytes from PEB %d:%d, "
- "read %zd bytes", err, len, pnum, offset, read);
- goto out;
- }
-
- dbg_msg("dumping %d bytes of data from PEB %d, offset %d",
- len, pnum, offset);
- print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
-out:
- vfree(buf);
- return;
-}
-
-/**
* ubi_debugging_init_dev - initialize debugging for an UBI device.
* @ubi: UBI device description object
*
@@ -479,5 +472,3 @@ void ubi_debugfs_exit_dev(struct ubi_device *ubi)
{
debugfs_remove_recursive(ubi->dbg->dfs_dir);
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index ead2cd16ba7..d5d2645b51a 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -21,21 +21,20 @@
#ifndef __UBI_DEBUG_H__
#define __UBI_DEBUG_H__
-#ifdef CONFIG_MTD_UBI_DEBUG
+void ubi_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len);
+void ubi_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
+void ubi_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
+
#include <linux/random.h>
#define ubi_assert(expr) do { \
if (unlikely(!(expr))) { \
printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
__func__, __LINE__, current->pid); \
- ubi_dbg_dump_stack(); \
+ dump_stack(); \
} \
} while (0)
-#define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__)
-
-#define ubi_dbg_dump_stack() dump_stack()
-
#define ubi_dbg_print_hex_dump(l, ps, pt, r, g, b, len, a) \
print_hex_dump(l, ps, pt, r, g, b, len, a)
@@ -58,17 +57,13 @@
/* Initialization and build messages */
#define dbg_bld(fmt, ...) ubi_dbg_msg("bld", fmt, ##__VA_ARGS__)
-void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
-void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
-void ubi_dbg_dump_vol_info(const struct ubi_volume *vol);
-void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
-void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv);
-void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type);
-void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req);
-void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len);
-int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len);
-int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
- int offset, int len);
+void ubi_dump_vol_info(const struct ubi_volume *vol);
+void ubi_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
+void ubi_dump_av(const struct ubi_ainf_volume *av);
+void ubi_dump_aeb(const struct ubi_ainf_peb *aeb, int type);
+void ubi_dump_mkvol_req(const struct ubi_mkvol_req *req);
+int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset,
+ int len);
int ubi_debugging_init_dev(struct ubi_device *ubi);
void ubi_debugging_exit_dev(struct ubi_device *ubi);
int ubi_debugfs_init(void);
@@ -167,73 +162,4 @@ static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
return 0;
}
-#else
-
-/* Use "if (0)" to make compiler check arguments even if debugging is off */
-#define ubi_assert(expr) do { \
- if (0) { \
- printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
- __func__, __LINE__, current->pid); \
- } \
-} while (0)
-
-#define dbg_err(fmt, ...) do { \
- if (0) \
- ubi_err(fmt, ##__VA_ARGS__); \
-} while (0)
-
-#define ubi_dbg_msg(fmt, ...) do { \
- if (0) \
- printk(KERN_DEBUG fmt "\n", ##__VA_ARGS__); \
-} while (0)
-
-#define dbg_msg(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_gen(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_eba(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_wl(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_io(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-#define dbg_bld(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
-
-static inline void ubi_dbg_dump_stack(void) { return; }
-static inline void
-ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr) { return; }
-static inline void
-ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr) { return; }
-static inline void
-ubi_dbg_dump_vol_info(const struct ubi_volume *vol) { return; }
-static inline void
-ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx) { return; }
-static inline void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv) { return; }
-static inline void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb,
- int type) { return; }
-static inline void
-ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req) { return; }
-static inline void ubi_dbg_dump_flash(struct ubi_device *ubi,
- int pnum, int offset, int len) { return; }
-static inline void
-ubi_dbg_print_hex_dump(const char *l, const char *ps, int pt, int r,
- int g, const void *b, size_t len, bool a) { return; }
-static inline int ubi_dbg_check_all_ff(struct ubi_device *ubi,
- int pnum, int offset,
- int len) { return 0; }
-static inline int ubi_dbg_check_write(struct ubi_device *ubi,
- const void *buf, int pnum,
- int offset, int len) { return 0; }
-
-static inline int ubi_debugging_init_dev(struct ubi_device *ubi) { return 0; }
-static inline void ubi_debugging_exit_dev(struct ubi_device *ubi) { return; }
-static inline int ubi_debugfs_init(void) { return 0; }
-static inline void ubi_debugfs_exit(void) { return; }
-static inline int ubi_debugfs_init_dev(struct ubi_device *ubi) { return 0; }
-static inline void ubi_debugfs_exit_dev(struct ubi_device *ubi) { return; }
-
-static inline int
-ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi) { return 0; }
-static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) { return 0; }
-static inline int
-ubi_dbg_is_write_failure(const struct ubi_device *ubi) { return 0; }
-static inline int
-ubi_dbg_is_erase_failure(const struct ubi_device *ubi) { return 0; }
-
-#endif /* !CONFIG_MTD_UBI_DEBUG */
#endif /* !__UBI_DEBUG_H__ */
diff --git a/drivers/mtd/ubi/eba.c b/drivers/mtd/ubi/eba.c
index 2455d620d96..b703ac7729c 100644
--- a/drivers/mtd/ubi/eba.c
+++ b/drivers/mtd/ubi/eba.c
@@ -341,7 +341,7 @@ int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
dbg_eba("erase LEB %d:%d, PEB %d", vol_id, lnum, pnum);
vol->eba_tbl[lnum] = UBI_LEB_UNMAPPED;
- err = ubi_wl_put_peb(ubi, pnum, 0);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 0);
out_unlock:
leb_write_unlock(ubi, vol_id, lnum);
@@ -507,7 +507,7 @@ static int recover_peb(struct ubi_device *ubi, int pnum, int vol_id, int lnum,
return -ENOMEM;
retry:
- new_pnum = ubi_wl_get_peb(ubi, UBI_UNKNOWN);
+ new_pnum = ubi_wl_get_peb(ubi);
if (new_pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
return new_pnum;
@@ -550,7 +550,7 @@ retry:
ubi_free_vid_hdr(ubi, vid_hdr);
vol->eba_tbl[lnum] = new_pnum;
- ubi_wl_put_peb(ubi, pnum, 1);
+ ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
ubi_msg("data was successfully recovered");
return 0;
@@ -558,7 +558,7 @@ retry:
out_unlock:
mutex_unlock(&ubi->buf_mutex);
out_put:
- ubi_wl_put_peb(ubi, new_pnum, 1);
+ ubi_wl_put_peb(ubi, vol_id, lnum, new_pnum, 1);
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
@@ -568,7 +568,7 @@ write_error:
* get another one.
*/
ubi_warn("failed to write to PEB %d", new_pnum);
- ubi_wl_put_peb(ubi, new_pnum, 1);
+ ubi_wl_put_peb(ubi, vol_id, lnum, new_pnum, 1);
if (++tries > UBI_IO_RETRIES) {
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
@@ -585,7 +585,6 @@ write_error:
* @buf: the data to write
* @offset: offset within the logical eraseblock where to write
* @len: how many bytes to write
- * @dtype: data type
*
* This function writes data to logical eraseblock @lnum of a dynamic volume
* @vol. Returns zero in case of success and a negative error code in case
@@ -593,7 +592,7 @@ write_error:
* written to the flash media, but may be some garbage.
*/
int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
- const void *buf, int offset, int len, int dtype)
+ const void *buf, int offset, int len)
{
int err, pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
@@ -641,7 +640,7 @@ int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
vid_hdr->data_pad = cpu_to_be32(vol->data_pad);
retry:
- pnum = ubi_wl_get_peb(ubi, dtype);
+ pnum = ubi_wl_get_peb(ubi);
if (pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
leb_write_unlock(ubi, vol_id, lnum);
@@ -687,7 +686,7 @@ write_error:
* eraseblock, so just put it and request a new one. We assume that if
* this physical eraseblock went bad, the erase code will handle that.
*/
- err = ubi_wl_put_peb(ubi, pnum, 1);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
if (err || ++tries > UBI_IO_RETRIES) {
ubi_ro_mode(ubi);
leb_write_unlock(ubi, vol_id, lnum);
@@ -707,7 +706,6 @@ write_error:
* @lnum: logical eraseblock number
* @buf: data to write
* @len: how many bytes to write
- * @dtype: data type
* @used_ebs: how many logical eraseblocks will this volume contain
*
* This function writes data to logical eraseblock @lnum of static volume
@@ -724,8 +722,7 @@ write_error:
* code in case of failure.
*/
int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
- int lnum, const void *buf, int len, int dtype,
- int used_ebs)
+ int lnum, const void *buf, int len, int used_ebs)
{
int err, pnum, tries = 0, data_size = len, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
@@ -763,7 +760,7 @@ int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
vid_hdr->data_crc = cpu_to_be32(crc);
retry:
- pnum = ubi_wl_get_peb(ubi, dtype);
+ pnum = ubi_wl_get_peb(ubi);
if (pnum < 0) {
ubi_free_vid_hdr(ubi, vid_hdr);
leb_write_unlock(ubi, vol_id, lnum);
@@ -807,7 +804,7 @@ write_error:
return err;
}
- err = ubi_wl_put_peb(ubi, pnum, 1);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
if (err || ++tries > UBI_IO_RETRIES) {
ubi_ro_mode(ubi);
leb_write_unlock(ubi, vol_id, lnum);
@@ -827,7 +824,6 @@ write_error:
* @lnum: logical eraseblock number
* @buf: data to write
* @len: how many bytes to write
- * @dtype: data type
*
* This function changes the contents of a logical eraseblock atomically. @buf
* has to contain new logical eraseblock data, and @len - the length of the
@@ -839,7 +835,7 @@ write_error:
* LEB change may be done at a time. This is ensured by @ubi->alc_mutex.
*/
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
- int lnum, const void *buf, int len, int dtype)
+ int lnum, const void *buf, int len)
{
int err, pnum, tries = 0, vol_id = vol->vol_id;
struct ubi_vid_hdr *vid_hdr;
@@ -856,7 +852,7 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
err = ubi_eba_unmap_leb(ubi, vol, lnum);
if (err)
return err;
- return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0, dtype);
+ return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0);
}
vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_NOFS);
@@ -881,7 +877,7 @@ int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
vid_hdr->data_crc = cpu_to_be32(crc);
retry:
- pnum = ubi_wl_get_peb(ubi, dtype);
+ pnum = ubi_wl_get_peb(ubi);
if (pnum < 0) {
err = pnum;
goto out_leb_unlock;
@@ -905,7 +901,7 @@ retry:
}
if (vol->eba_tbl[lnum] >= 0) {
- err = ubi_wl_put_peb(ubi, vol->eba_tbl[lnum], 0);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, vol->eba_tbl[lnum], 0);
if (err)
goto out_leb_unlock;
}
@@ -930,7 +926,7 @@ write_error:
goto out_leb_unlock;
}
- err = ubi_wl_put_peb(ubi, pnum, 1);
+ err = ubi_wl_put_peb(ubi, vol_id, lnum, pnum, 1);
if (err || ++tries > UBI_IO_RETRIES) {
ubi_ro_mode(ubi);
goto out_leb_unlock;
@@ -1171,7 +1167,7 @@ out_unlock_leb:
* print_rsvd_warning - warn about not having enough reserved PEBs.
* @ubi: UBI device description object
*
- * This is a helper function for 'ubi_eba_init_scan()' which is called when UBI
+ * This is a helper function for 'ubi_eba_init()' which is called when UBI
* cannot reserve enough PEBs for bad block handling. This function makes a
* decision whether we have to print a warning or not. The algorithm is as
* follows:
@@ -1186,13 +1182,13 @@ out_unlock_leb:
* reported by real users.
*/
static void print_rsvd_warning(struct ubi_device *ubi,
- struct ubi_scan_info *si)
+ struct ubi_attach_info *ai)
{
/*
* The 1 << 18 (256KiB) number is picked randomly, just a reasonably
* large number to distinguish between newly flashed and used images.
*/
- if (si->max_sqnum > (1 << 18)) {
+ if (ai->max_sqnum > (1 << 18)) {
int min = ubi->beb_rsvd_level / 10;
if (!min)
@@ -1209,19 +1205,19 @@ static void print_rsvd_warning(struct ubi_device *ubi,
}
/**
- * ubi_eba_init_scan - initialize the EBA sub-system using scanning information.
+ * ubi_eba_init - initialize the EBA sub-system using attaching information.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function returns zero in case of success and a negative error code in
* case of failure.
*/
-int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
+int ubi_eba_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
{
int i, j, err, num_volumes;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_volume *av;
struct ubi_volume *vol;
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_peb *aeb;
struct rb_node *rb;
dbg_eba("initialize EBA sub-system");
@@ -1230,7 +1226,7 @@ int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
mutex_init(&ubi->alc_mutex);
ubi->ltree = RB_ROOT;
- ubi->global_sqnum = si->max_sqnum + 1;
+ ubi->global_sqnum = ai->max_sqnum + 1;
num_volumes = ubi->vtbl_slots + UBI_INT_VOL_COUNT;
for (i = 0; i < num_volumes; i++) {
@@ -1250,18 +1246,18 @@ int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
for (j = 0; j < vol->reserved_pebs; j++)
vol->eba_tbl[j] = UBI_LEB_UNMAPPED;
- sv = ubi_scan_find_sv(si, idx2vol_id(ubi, i));
- if (!sv)
+ av = ubi_find_av(ai, idx2vol_id(ubi, i));
+ if (!av)
continue;
- ubi_rb_for_each_entry(rb, seb, &sv->root, u.rb) {
- if (seb->lnum >= vol->reserved_pebs)
+ ubi_rb_for_each_entry(rb, aeb, &av->root, u.rb) {
+ if (aeb->lnum >= vol->reserved_pebs)
/*
* This may happen in case of an unclean reboot
* during re-size.
*/
- ubi_scan_move_to_list(sv, seb, &si->erase);
- vol->eba_tbl[seb->lnum] = seb->pnum;
+ ubi_move_aeb_to_list(av, aeb, &ai->erase);
+ vol->eba_tbl[aeb->lnum] = aeb->pnum;
}
}
@@ -1283,7 +1279,7 @@ int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
if (ubi->avail_pebs < ubi->beb_rsvd_level) {
/* No enough free physical eraseblocks */
ubi->beb_rsvd_pebs = ubi->avail_pebs;
- print_rsvd_warning(ubi, si);
+ print_rsvd_warning(ubi, ai);
} else
ubi->beb_rsvd_pebs = ubi->beb_rsvd_level;
diff --git a/drivers/mtd/ubi/gluebi.c b/drivers/mtd/ubi/gluebi.c
index 90b98822d9a..4e44bee4c56 100644
--- a/drivers/mtd/ubi/gluebi.c
+++ b/drivers/mtd/ubi/gluebi.c
@@ -227,7 +227,7 @@ static int gluebi_write(struct mtd_info *mtd, loff_t to, size_t len,
if (to_write > total_written)
to_write = total_written;
- err = ubi_write(gluebi->desc, lnum, buf, offs, to_write);
+ err = ubi_leb_write(gluebi->desc, lnum, buf, offs, to_write);
if (err)
break;
diff --git a/drivers/mtd/ubi/io.c b/drivers/mtd/ubi/io.c
index 43f1a0011a5..a8d523794b5 100644
--- a/drivers/mtd/ubi/io.c
+++ b/drivers/mtd/ubi/io.c
@@ -91,21 +91,15 @@
#include <linux/slab.h>
#include "ubi.h"
-#ifdef CONFIG_MTD_UBI_DEBUG
-static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum);
-static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum);
-static int paranoid_check_ec_hdr(const struct ubi_device *ubi, int pnum,
- const struct ubi_ec_hdr *ec_hdr);
-static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum);
-static int paranoid_check_vid_hdr(const struct ubi_device *ubi, int pnum,
- const struct ubi_vid_hdr *vid_hdr);
-#else
-#define paranoid_check_not_bad(ubi, pnum) 0
-#define paranoid_check_peb_ec_hdr(ubi, pnum) 0
-#define paranoid_check_ec_hdr(ubi, pnum, ec_hdr) 0
-#define paranoid_check_peb_vid_hdr(ubi, pnum) 0
-#define paranoid_check_vid_hdr(ubi, pnum, vid_hdr) 0
-#endif
+static int self_check_not_bad(const struct ubi_device *ubi, int pnum);
+static int self_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum);
+static int self_check_ec_hdr(const struct ubi_device *ubi, int pnum,
+ const struct ubi_ec_hdr *ec_hdr);
+static int self_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum);
+static int self_check_vid_hdr(const struct ubi_device *ubi, int pnum,
+ const struct ubi_vid_hdr *vid_hdr);
+static int self_check_write(struct ubi_device *ubi, const void *buf, int pnum,
+ int offset, int len);
/**
* ubi_io_read - read data from a physical eraseblock.
@@ -142,7 +136,7 @@ int ubi_io_read(const struct ubi_device *ubi, void *buf, int pnum, int offset,
ubi_assert(offset >= 0 && offset + len <= ubi->peb_size);
ubi_assert(len > 0);
- err = paranoid_check_not_bad(ubi, pnum);
+ err = self_check_not_bad(ubi, pnum);
if (err)
return err;
@@ -189,16 +183,16 @@ retry:
}
if (retries++ < UBI_IO_RETRIES) {
- dbg_io("error %d%s while reading %d bytes from PEB "
- "%d:%d, read only %zd bytes, retry",
- err, errstr, len, pnum, offset, read);
+ ubi_warn("error %d%s while reading %d bytes from PEB "
+ "%d:%d, read only %zd bytes, retry",
+ err, errstr, len, pnum, offset, read);
yield();
goto retry;
}
ubi_err("error %d%s while reading %d bytes from PEB %d:%d, "
"read %zd bytes", err, errstr, len, pnum, offset, read);
- ubi_dbg_dump_stack();
+ dump_stack();
/*
* The driver should never return -EBADMSG if it failed to read
@@ -257,14 +251,12 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset,
return -EROFS;
}
- /* The below has to be compiled out if paranoid checks are disabled */
-
- err = paranoid_check_not_bad(ubi, pnum);
+ err = self_check_not_bad(ubi, pnum);
if (err)
return err;
/* The area we are writing to has to contain all 0xFF bytes */
- err = ubi_dbg_check_all_ff(ubi, pnum, offset, len);
+ err = ubi_self_check_all_ff(ubi, pnum, offset, len);
if (err)
return err;
@@ -273,18 +265,18 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset,
* We write to the data area of the physical eraseblock. Make
* sure it has valid EC and VID headers.
*/
- err = paranoid_check_peb_ec_hdr(ubi, pnum);
+ err = self_check_peb_ec_hdr(ubi, pnum);
if (err)
return err;
- err = paranoid_check_peb_vid_hdr(ubi, pnum);
+ err = self_check_peb_vid_hdr(ubi, pnum);
if (err)
return err;
}
if (ubi_dbg_is_write_failure(ubi)) {
- dbg_err("cannot write %d bytes to PEB %d:%d "
+ ubi_err("cannot write %d bytes to PEB %d:%d "
"(emulated)", len, pnum, offset);
- ubi_dbg_dump_stack();
+ dump_stack();
return -EIO;
}
@@ -293,13 +285,13 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset,
if (err) {
ubi_err("error %d while writing %d bytes to PEB %d:%d, written "
"%zd bytes", err, len, pnum, offset, written);
- ubi_dbg_dump_stack();
- ubi_dbg_dump_flash(ubi, pnum, offset, len);
+ dump_stack();
+ ubi_dump_flash(ubi, pnum, offset, len);
} else
ubi_assert(written == len);
if (!err) {
- err = ubi_dbg_check_write(ubi, buf, pnum, offset, len);
+ err = self_check_write(ubi, buf, pnum, offset, len);
if (err)
return err;
@@ -310,7 +302,7 @@ int ubi_io_write(struct ubi_device *ubi, const void *buf, int pnum, int offset,
offset += len;
len = ubi->peb_size - offset;
if (len)
- err = ubi_dbg_check_all_ff(ubi, pnum, offset, len);
+ err = ubi_self_check_all_ff(ubi, pnum, offset, len);
}
return err;
@@ -364,13 +356,13 @@ retry:
err = mtd_erase(ubi->mtd, &ei);
if (err) {
if (retries++ < UBI_IO_RETRIES) {
- dbg_io("error %d while erasing PEB %d, retry",
- err, pnum);
+ ubi_warn("error %d while erasing PEB %d, retry",
+ err, pnum);
yield();
goto retry;
}
ubi_err("cannot erase PEB %d, error %d", pnum, err);
- ubi_dbg_dump_stack();
+ dump_stack();
return err;
}
@@ -383,21 +375,21 @@ retry:
if (ei.state == MTD_ERASE_FAILED) {
if (retries++ < UBI_IO_RETRIES) {
- dbg_io("error while erasing PEB %d, retry", pnum);
+ ubi_warn("error while erasing PEB %d, retry", pnum);
yield();
goto retry;
}
ubi_err("cannot erase PEB %d", pnum);
- ubi_dbg_dump_stack();
+ dump_stack();
return -EIO;
}
- err = ubi_dbg_check_all_ff(ubi, pnum, 0, ubi->peb_size);
+ err = ubi_self_check_all_ff(ubi, pnum, 0, ubi->peb_size);
if (err)
return err;
if (ubi_dbg_is_erase_failure(ubi)) {
- dbg_err("cannot erase PEB %d (emulated)", pnum);
+ ubi_err("cannot erase PEB %d (emulated)", pnum);
return -EIO;
}
@@ -521,8 +513,7 @@ static int nor_erase_prepare(struct ubi_device *ubi, int pnum)
* It is important to first invalidate the EC header, and then the VID
* header. Otherwise a power cut may lead to valid EC header and
* invalid VID header, in which case UBI will treat this PEB as
- * corrupted and will try to preserve it, and print scary warnings (see
- * the header comment in scan.c for more information).
+ * corrupted and will try to preserve it, and print scary warnings.
*/
addr = (loff_t)pnum * ubi->peb_size;
err = mtd_write(ubi->mtd, addr, 4, &written, (void *)&data);
@@ -563,7 +554,7 @@ static int nor_erase_prepare(struct ubi_device *ubi, int pnum)
*/
ubi_err("cannot invalidate PEB %d, write returned %d read returned %d",
pnum, err, err1);
- ubi_dbg_dump_flash(ubi, pnum, 0, ubi->peb_size);
+ ubi_dump_flash(ubi, pnum, 0, ubi->peb_size);
return -EIO;
}
@@ -589,7 +580,7 @@ int ubi_io_sync_erase(struct ubi_device *ubi, int pnum, int torture)
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
- err = paranoid_check_not_bad(ubi, pnum);
+ err = self_check_not_bad(ubi, pnum);
if (err != 0)
return err;
@@ -721,8 +712,8 @@ static int validate_ec_hdr(const struct ubi_device *ubi,
bad:
ubi_err("bad EC header");
- ubi_dbg_dump_ec_hdr(ec_hdr);
- ubi_dbg_dump_stack();
+ ubi_dump_ec_hdr(ec_hdr);
+ dump_stack();
return 1;
}
@@ -803,7 +794,7 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum,
if (verbose) {
ubi_warn("bad magic number at PEB %d: %08x instead of "
"%08x", pnum, magic, UBI_EC_HDR_MAGIC);
- ubi_dbg_dump_ec_hdr(ec_hdr);
+ ubi_dump_ec_hdr(ec_hdr);
}
dbg_bld("bad magic number at PEB %d: %08x instead of "
"%08x", pnum, magic, UBI_EC_HDR_MAGIC);
@@ -817,7 +808,7 @@ int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum,
if (verbose) {
ubi_warn("bad EC header CRC at PEB %d, calculated "
"%#08x, read %#08x", pnum, crc, hdr_crc);
- ubi_dbg_dump_ec_hdr(ec_hdr);
+ ubi_dump_ec_hdr(ec_hdr);
}
dbg_bld("bad EC header CRC at PEB %d, calculated "
"%#08x, read %#08x", pnum, crc, hdr_crc);
@@ -874,7 +865,7 @@ int ubi_io_write_ec_hdr(struct ubi_device *ubi, int pnum,
crc = crc32(UBI_CRC32_INIT, ec_hdr, UBI_EC_HDR_SIZE_CRC);
ec_hdr->hdr_crc = cpu_to_be32(crc);
- err = paranoid_check_ec_hdr(ubi, pnum, ec_hdr);
+ err = self_check_ec_hdr(ubi, pnum, ec_hdr);
if (err)
return err;
@@ -905,40 +896,40 @@ static int validate_vid_hdr(const struct ubi_device *ubi,
int usable_leb_size = ubi->leb_size - data_pad;
if (copy_flag != 0 && copy_flag != 1) {
- dbg_err("bad copy_flag");
+ ubi_err("bad copy_flag");
goto bad;
}
if (vol_id < 0 || lnum < 0 || data_size < 0 || used_ebs < 0 ||
data_pad < 0) {
- dbg_err("negative values");
+ ubi_err("negative values");
goto bad;
}
if (vol_id >= UBI_MAX_VOLUMES && vol_id < UBI_INTERNAL_VOL_START) {
- dbg_err("bad vol_id");
+ ubi_err("bad vol_id");
goto bad;
}
if (vol_id < UBI_INTERNAL_VOL_START && compat != 0) {
- dbg_err("bad compat");
+ ubi_err("bad compat");
goto bad;
}
if (vol_id >= UBI_INTERNAL_VOL_START && compat != UBI_COMPAT_DELETE &&
compat != UBI_COMPAT_RO && compat != UBI_COMPAT_PRESERVE &&
compat != UBI_COMPAT_REJECT) {
- dbg_err("bad compat");
+ ubi_err("bad compat");
goto bad;
}
if (vol_type != UBI_VID_DYNAMIC && vol_type != UBI_VID_STATIC) {
- dbg_err("bad vol_type");
+ ubi_err("bad vol_type");
goto bad;
}
if (data_pad >= ubi->leb_size / 2) {
- dbg_err("bad data_pad");
+ ubi_err("bad data_pad");
goto bad;
}
@@ -950,45 +941,45 @@ static int validate_vid_hdr(const struct ubi_device *ubi,
* mapped logical eraseblocks.
*/
if (used_ebs == 0) {
- dbg_err("zero used_ebs");
+ ubi_err("zero used_ebs");
goto bad;
}
if (data_size == 0) {
- dbg_err("zero data_size");
+ ubi_err("zero data_size");
goto bad;
}
if (lnum < used_ebs - 1) {
if (data_size != usable_leb_size) {
- dbg_err("bad data_size");
+ ubi_err("bad data_size");
goto bad;
}
} else if (lnum == used_ebs - 1) {
if (data_size == 0) {
- dbg_err("bad data_size at last LEB");
+ ubi_err("bad data_size at last LEB");
goto bad;
}
} else {
- dbg_err("too high lnum");
+ ubi_err("too high lnum");
goto bad;
}
} else {
if (copy_flag == 0) {
if (data_crc != 0) {
- dbg_err("non-zero data CRC");
+ ubi_err("non-zero data CRC");
goto bad;
}
if (data_size != 0) {
- dbg_err("non-zero data_size");
+ ubi_err("non-zero data_size");
goto bad;
}
} else {
if (data_size == 0) {
- dbg_err("zero data_size of copy");
+ ubi_err("zero data_size of copy");
goto bad;
}
}
if (used_ebs != 0) {
- dbg_err("bad used_ebs");
+ ubi_err("bad used_ebs");
goto bad;
}
}
@@ -997,8 +988,8 @@ static int validate_vid_hdr(const struct ubi_device *ubi,
bad:
ubi_err("bad VID header");
- ubi_dbg_dump_vid_hdr(vid_hdr);
- ubi_dbg_dump_stack();
+ ubi_dump_vid_hdr(vid_hdr);
+ dump_stack();
return 1;
}
@@ -1054,7 +1045,7 @@ int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum,
if (verbose) {
ubi_warn("bad magic number at PEB %d: %08x instead of "
"%08x", pnum, magic, UBI_VID_HDR_MAGIC);
- ubi_dbg_dump_vid_hdr(vid_hdr);
+ ubi_dump_vid_hdr(vid_hdr);
}
dbg_bld("bad magic number at PEB %d: %08x instead of "
"%08x", pnum, magic, UBI_VID_HDR_MAGIC);
@@ -1068,7 +1059,7 @@ int ubi_io_read_vid_hdr(struct ubi_device *ubi, int pnum,
if (verbose) {
ubi_warn("bad CRC at PEB %d, calculated %#08x, "
"read %#08x", pnum, crc, hdr_crc);
- ubi_dbg_dump_vid_hdr(vid_hdr);
+ ubi_dump_vid_hdr(vid_hdr);
}
dbg_bld("bad CRC at PEB %d, calculated %#08x, "
"read %#08x", pnum, crc, hdr_crc);
@@ -1112,7 +1103,7 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum,
dbg_io("write VID header to PEB %d", pnum);
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
- err = paranoid_check_peb_ec_hdr(ubi, pnum);
+ err = self_check_peb_ec_hdr(ubi, pnum);
if (err)
return err;
@@ -1121,7 +1112,7 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum,
crc = crc32(UBI_CRC32_INIT, vid_hdr, UBI_VID_HDR_SIZE_CRC);
vid_hdr->hdr_crc = cpu_to_be32(crc);
- err = paranoid_check_vid_hdr(ubi, pnum, vid_hdr);
+ err = self_check_vid_hdr(ubi, pnum, vid_hdr);
if (err)
return err;
@@ -1131,17 +1122,15 @@ int ubi_io_write_vid_hdr(struct ubi_device *ubi, int pnum,
return err;
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_check_not_bad - ensure that a physical eraseblock is not bad.
+ * self_check_not_bad - ensure that a physical eraseblock is not bad.
* @ubi: UBI device description object
* @pnum: physical eraseblock number to check
*
* This function returns zero if the physical eraseblock is good, %-EINVAL if
* it is bad and a negative error code if an error occurred.
*/
-static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum)
+static int self_check_not_bad(const struct ubi_device *ubi, int pnum)
{
int err;
@@ -1152,13 +1141,13 @@ static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum)
if (!err)
return err;
- ubi_err("paranoid check failed for PEB %d", pnum);
- ubi_dbg_dump_stack();
+ ubi_err("self-check failed for PEB %d", pnum);
+ dump_stack();
return err > 0 ? -EINVAL : err;
}
/**
- * paranoid_check_ec_hdr - check if an erase counter header is all right.
+ * self_check_ec_hdr - check if an erase counter header is all right.
* @ubi: UBI device description object
* @pnum: physical eraseblock number the erase counter header belongs to
* @ec_hdr: the erase counter header to check
@@ -1166,8 +1155,8 @@ static int paranoid_check_not_bad(const struct ubi_device *ubi, int pnum)
* This function returns zero if the erase counter header contains valid
* values, and %-EINVAL if not.
*/
-static int paranoid_check_ec_hdr(const struct ubi_device *ubi, int pnum,
- const struct ubi_ec_hdr *ec_hdr)
+static int self_check_ec_hdr(const struct ubi_device *ubi, int pnum,
+ const struct ubi_ec_hdr *ec_hdr)
{
int err;
uint32_t magic;
@@ -1184,27 +1173,27 @@ static int paranoid_check_ec_hdr(const struct ubi_device *ubi, int pnum,
err = validate_ec_hdr(ubi, ec_hdr);
if (err) {
- ubi_err("paranoid check failed for PEB %d", pnum);
+ ubi_err("self-check failed for PEB %d", pnum);
goto fail;
}
return 0;
fail:
- ubi_dbg_dump_ec_hdr(ec_hdr);
- ubi_dbg_dump_stack();
+ ubi_dump_ec_hdr(ec_hdr);
+ dump_stack();
return -EINVAL;
}
/**
- * paranoid_check_peb_ec_hdr - check erase counter header.
+ * self_check_peb_ec_hdr - check erase counter header.
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
*
* This function returns zero if the erase counter header is all right and and
* a negative error code if not or if an error occurred.
*/
-static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum)
+static int self_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum)
{
int err;
uint32_t crc, hdr_crc;
@@ -1225,14 +1214,14 @@ static int paranoid_check_peb_ec_hdr(const struct ubi_device *ubi, int pnum)
hdr_crc = be32_to_cpu(ec_hdr->hdr_crc);
if (hdr_crc != crc) {
ubi_err("bad CRC, calculated %#08x, read %#08x", crc, hdr_crc);
- ubi_err("paranoid check failed for PEB %d", pnum);
- ubi_dbg_dump_ec_hdr(ec_hdr);
- ubi_dbg_dump_stack();
+ ubi_err("self-check failed for PEB %d", pnum);
+ ubi_dump_ec_hdr(ec_hdr);
+ dump_stack();
err = -EINVAL;
goto exit;
}
- err = paranoid_check_ec_hdr(ubi, pnum, ec_hdr);
+ err = self_check_ec_hdr(ubi, pnum, ec_hdr);
exit:
kfree(ec_hdr);
@@ -1240,7 +1229,7 @@ exit:
}
/**
- * paranoid_check_vid_hdr - check that a volume identifier header is all right.
+ * self_check_vid_hdr - check that a volume identifier header is all right.
* @ubi: UBI device description object
* @pnum: physical eraseblock number the volume identifier header belongs to
* @vid_hdr: the volume identifier header to check
@@ -1248,8 +1237,8 @@ exit:
* This function returns zero if the volume identifier header is all right, and
* %-EINVAL if not.
*/
-static int paranoid_check_vid_hdr(const struct ubi_device *ubi, int pnum,
- const struct ubi_vid_hdr *vid_hdr)
+static int self_check_vid_hdr(const struct ubi_device *ubi, int pnum,
+ const struct ubi_vid_hdr *vid_hdr)
{
int err;
uint32_t magic;
@@ -1266,29 +1255,29 @@ static int paranoid_check_vid_hdr(const struct ubi_device *ubi, int pnum,
err = validate_vid_hdr(ubi, vid_hdr);
if (err) {
- ubi_err("paranoid check failed for PEB %d", pnum);
+ ubi_err("self-check failed for PEB %d", pnum);
goto fail;
}
return err;
fail:
- ubi_err("paranoid check failed for PEB %d", pnum);
- ubi_dbg_dump_vid_hdr(vid_hdr);
- ubi_dbg_dump_stack();
+ ubi_err("self-check failed for PEB %d", pnum);
+ ubi_dump_vid_hdr(vid_hdr);
+ dump_stack();
return -EINVAL;
}
/**
- * paranoid_check_peb_vid_hdr - check volume identifier header.
+ * self_check_peb_vid_hdr - check volume identifier header.
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
*
* This function returns zero if the volume identifier header is all right,
* and a negative error code if not or if an error occurred.
*/
-static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum)
+static int self_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum)
{
int err;
uint32_t crc, hdr_crc;
@@ -1313,14 +1302,14 @@ static int paranoid_check_peb_vid_hdr(const struct ubi_device *ubi, int pnum)
if (hdr_crc != crc) {
ubi_err("bad VID header CRC at PEB %d, calculated %#08x, "
"read %#08x", pnum, crc, hdr_crc);
- ubi_err("paranoid check failed for PEB %d", pnum);
- ubi_dbg_dump_vid_hdr(vid_hdr);
- ubi_dbg_dump_stack();
+ ubi_err("self-check failed for PEB %d", pnum);
+ ubi_dump_vid_hdr(vid_hdr);
+ dump_stack();
err = -EINVAL;
goto exit;
}
- err = paranoid_check_vid_hdr(ubi, pnum, vid_hdr);
+ err = self_check_vid_hdr(ubi, pnum, vid_hdr);
exit:
ubi_free_vid_hdr(ubi, vid_hdr);
@@ -1328,7 +1317,7 @@ exit:
}
/**
- * ubi_dbg_check_write - make sure write succeeded.
+ * self_check_write - make sure write succeeded.
* @ubi: UBI device description object
* @buf: buffer with data which were written
* @pnum: physical eraseblock number the data were written to
@@ -1339,8 +1328,8 @@ exit:
* the original data buffer - the data have to match. Returns zero if the data
* match and a negative error code if not or in case of failure.
*/
-int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
- int offset, int len)
+static int self_check_write(struct ubi_device *ubi, const void *buf, int pnum,
+ int offset, int len)
{
int err, i;
size_t read;
@@ -1368,7 +1357,7 @@ int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
if (c == c1)
continue;
- ubi_err("paranoid check failed for PEB %d:%d, len %d",
+ ubi_err("self-check failed for PEB %d:%d, len %d",
pnum, offset, len);
ubi_msg("data differ at position %d", i);
dump_len = max_t(int, 128, len - i);
@@ -1380,7 +1369,7 @@ int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
i, i + dump_len);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
buf1 + i, dump_len, 1);
- ubi_dbg_dump_stack();
+ dump_stack();
err = -EINVAL;
goto out_free;
}
@@ -1394,7 +1383,7 @@ out_free:
}
/**
- * ubi_dbg_check_all_ff - check that a region of flash is empty.
+ * ubi_self_check_all_ff - check that a region of flash is empty.
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
* @offset: the starting offset within the physical eraseblock to check
@@ -1404,7 +1393,7 @@ out_free:
* @offset of the physical eraseblock @pnum, and a negative error code if not
* or if an error occurred.
*/
-int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)
+int ubi_self_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)
{
size_t read;
int err;
@@ -1438,14 +1427,12 @@ int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len)
return 0;
fail:
- ubi_err("paranoid check failed for PEB %d", pnum);
+ ubi_err("self-check failed for PEB %d", pnum);
ubi_msg("hex dump of the %d-%d region", offset, offset + len);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1, buf, len, 1);
err = -EINVAL;
error:
- ubi_dbg_dump_stack();
+ dump_stack();
vfree(buf);
return err;
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index 9fdb35367fe..3aac1acceeb 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -221,7 +221,7 @@ out_free:
kfree(desc);
out_put_ubi:
ubi_put_device(ubi);
- dbg_err("cannot open device %d, volume %d, error %d",
+ ubi_err("cannot open device %d, volume %d, error %d",
ubi_num, vol_id, err);
return ERR_PTR(err);
}
@@ -426,11 +426,9 @@ EXPORT_SYMBOL_GPL(ubi_leb_read);
* @buf: data to write
* @offset: offset within the logical eraseblock where to write
* @len: how many bytes to write
- * @dtype: expected data type
*
* This function writes @len bytes of data from @buf to offset @offset of
- * logical eraseblock @lnum. The @dtype argument describes expected lifetime of
- * the data.
+ * logical eraseblock @lnum.
*
* This function takes care of physical eraseblock write failures. If write to
* the physical eraseblock write operation fails, the logical eraseblock is
@@ -447,7 +445,7 @@ EXPORT_SYMBOL_GPL(ubi_leb_read);
* returns immediately with %-EBADF code.
*/
int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
- int offset, int len, int dtype)
+ int offset, int len)
{
struct ubi_volume *vol = desc->vol;
struct ubi_device *ubi = vol->ubi;
@@ -466,17 +464,13 @@ int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
offset & (ubi->min_io_size - 1) || len & (ubi->min_io_size - 1))
return -EINVAL;
- if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
- dtype != UBI_UNKNOWN)
- return -EINVAL;
-
if (vol->upd_marker)
return -EBADF;
if (len == 0)
return 0;
- return ubi_eba_write_leb(ubi, vol, lnum, buf, offset, len, dtype);
+ return ubi_eba_write_leb(ubi, vol, lnum, buf, offset, len);
}
EXPORT_SYMBOL_GPL(ubi_leb_write);
@@ -486,7 +480,6 @@ EXPORT_SYMBOL_GPL(ubi_leb_write);
* @lnum: logical eraseblock number to change
* @buf: data to write
* @len: how many bytes to write
- * @dtype: expected data type
*
* This function changes the contents of a logical eraseblock atomically. @buf
* has to contain new logical eraseblock data, and @len - the length of the
@@ -497,7 +490,7 @@ EXPORT_SYMBOL_GPL(ubi_leb_write);
* code in case of failure.
*/
int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
- int len, int dtype)
+ int len)
{
struct ubi_volume *vol = desc->vol;
struct ubi_device *ubi = vol->ubi;
@@ -515,17 +508,13 @@ int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
len > vol->usable_leb_size || len & (ubi->min_io_size - 1))
return -EINVAL;
- if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
- dtype != UBI_UNKNOWN)
- return -EINVAL;
-
if (vol->upd_marker)
return -EBADF;
if (len == 0)
return 0;
- return ubi_eba_atomic_leb_change(ubi, vol, lnum, buf, len, dtype);
+ return ubi_eba_atomic_leb_change(ubi, vol, lnum, buf, len);
}
EXPORT_SYMBOL_GPL(ubi_leb_change);
@@ -562,7 +551,7 @@ int ubi_leb_erase(struct ubi_volume_desc *desc, int lnum)
if (err)
return err;
- return ubi_wl_flush(ubi);
+ return ubi_wl_flush(ubi, vol->vol_id, lnum);
}
EXPORT_SYMBOL_GPL(ubi_leb_erase);
@@ -626,7 +615,6 @@ EXPORT_SYMBOL_GPL(ubi_leb_unmap);
* ubi_leb_map - map logical eraseblock to a physical eraseblock.
* @desc: volume descriptor
* @lnum: logical eraseblock number
- * @dtype: expected data type
*
* This function maps an un-mapped logical eraseblock @lnum to a physical
* eraseblock. This means, that after a successful invocation of this
@@ -639,7 +627,7 @@ EXPORT_SYMBOL_GPL(ubi_leb_unmap);
* eraseblock is already mapped, and other negative error codes in case of
* other failures.
*/
-int ubi_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
+int ubi_leb_map(struct ubi_volume_desc *desc, int lnum)
{
struct ubi_volume *vol = desc->vol;
struct ubi_device *ubi = vol->ubi;
@@ -652,17 +640,13 @@ int ubi_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype)
if (lnum < 0 || lnum >= vol->reserved_pebs)
return -EINVAL;
- if (dtype != UBI_LONGTERM && dtype != UBI_SHORTTERM &&
- dtype != UBI_UNKNOWN)
- return -EINVAL;
-
if (vol->upd_marker)
return -EBADF;
if (vol->eba_tbl[lnum] >= 0)
return -EBADMSG;
- return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0, dtype);
+ return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0);
}
EXPORT_SYMBOL_GPL(ubi_leb_map);
@@ -720,6 +704,33 @@ int ubi_sync(int ubi_num)
}
EXPORT_SYMBOL_GPL(ubi_sync);
+/**
+ * ubi_flush - flush UBI work queue.
+ * @ubi_num: UBI device to flush work queue
+ * @vol_id: volume id to flush for
+ * @lnum: logical eraseblock number to flush for
+ *
+ * This function executes all pending works for a particular volume id / logical
+ * eraseblock number pair. If either value is set to %UBI_ALL, then it acts as
+ * a wildcard for all of the corresponding volume numbers or logical
+ * eraseblock numbers. It returns zero in case of success and a negative error
+ * code in case of failure.
+ */
+int ubi_flush(int ubi_num, int vol_id, int lnum)
+{
+ struct ubi_device *ubi;
+ int err = 0;
+
+ ubi = ubi_get_device(ubi_num);
+ if (!ubi)
+ return -ENODEV;
+
+ err = ubi_wl_flush(ubi, vol_id, lnum);
+ ubi_put_device(ubi);
+ return err;
+}
+EXPORT_SYMBOL_GPL(ubi_flush);
+
BLOCKING_NOTIFIER_HEAD(ubi_notifiers);
/**
diff --git a/drivers/mtd/ubi/scan.h b/drivers/mtd/ubi/scan.h
deleted file mode 100644
index d48aef15ab5..00000000000
--- a/drivers/mtd/ubi/scan.h
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
- * Copyright (c) International Business Machines Corp., 2006
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
- * the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * Author: Artem Bityutskiy (Битюцкий Артём)
- */
-
-#ifndef __UBI_SCAN_H__
-#define __UBI_SCAN_H__
-
-/* The erase counter value for this physical eraseblock is unknown */
-#define UBI_SCAN_UNKNOWN_EC (-1)
-
-/**
- * struct ubi_scan_leb - scanning information about a physical eraseblock.
- * @ec: erase counter (%UBI_SCAN_UNKNOWN_EC if it is unknown)
- * @pnum: physical eraseblock number
- * @lnum: logical eraseblock number
- * @scrub: if this physical eraseblock needs scrubbing
- * @copy_flag: this LEB is a copy (@copy_flag is set in VID header of this LEB)
- * @sqnum: sequence number
- * @u: unions RB-tree or @list links
- * @u.rb: link in the per-volume RB-tree of &struct ubi_scan_leb objects
- * @u.list: link in one of the eraseblock lists
- *
- * One object of this type is allocated for each physical eraseblock during
- * scanning.
- */
-struct ubi_scan_leb {
- int ec;
- int pnum;
- int lnum;
- unsigned int scrub:1;
- unsigned int copy_flag:1;
- unsigned long long sqnum;
- union {
- struct rb_node rb;
- struct list_head list;
- } u;
-};
-
-/**
- * struct ubi_scan_volume - scanning information about a volume.
- * @vol_id: volume ID
- * @highest_lnum: highest logical eraseblock number in this volume
- * @leb_count: number of logical eraseblocks in this volume
- * @vol_type: volume type
- * @used_ebs: number of used logical eraseblocks in this volume (only for
- * static volumes)
- * @last_data_size: amount of data in the last logical eraseblock of this
- * volume (always equivalent to the usable logical eraseblock
- * size in case of dynamic volumes)
- * @data_pad: how many bytes at the end of logical eraseblocks of this volume
- * are not used (due to volume alignment)
- * @compat: compatibility flags of this volume
- * @rb: link in the volume RB-tree
- * @root: root of the RB-tree containing all the eraseblock belonging to this
- * volume (&struct ubi_scan_leb objects)
- *
- * One object of this type is allocated for each volume during scanning.
- */
-struct ubi_scan_volume {
- int vol_id;
- int highest_lnum;
- int leb_count;
- int vol_type;
- int used_ebs;
- int last_data_size;
- int data_pad;
- int compat;
- struct rb_node rb;
- struct rb_root root;
-};
-
-/**
- * struct ubi_scan_info - UBI scanning information.
- * @volumes: root of the volume RB-tree
- * @corr: list of corrupted physical eraseblocks
- * @free: list of free physical eraseblocks
- * @erase: list of physical eraseblocks which have to be erased
- * @alien: list of physical eraseblocks which should not be used by UBI (e.g.,
- * those belonging to "preserve"-compatible internal volumes)
- * @corr_peb_count: count of PEBs in the @corr list
- * @empty_peb_count: count of PEBs which are presumably empty (contain only
- * 0xFF bytes)
- * @alien_peb_count: count of PEBs in the @alien list
- * @bad_peb_count: count of bad physical eraseblocks
- * @maybe_bad_peb_count: count of bad physical eraseblocks which are not marked
- * as bad yet, but which look like bad
- * @vols_found: number of volumes found during scanning
- * @highest_vol_id: highest volume ID
- * @is_empty: flag indicating whether the MTD device is empty or not
- * @min_ec: lowest erase counter value
- * @max_ec: highest erase counter value
- * @max_sqnum: highest sequence number value
- * @mean_ec: mean erase counter value
- * @ec_sum: a temporary variable used when calculating @mean_ec
- * @ec_count: a temporary variable used when calculating @mean_ec
- * @scan_leb_slab: slab cache for &struct ubi_scan_leb objects
- *
- * This data structure contains the result of scanning and may be used by other
- * UBI sub-systems to build final UBI data structures, further error-recovery
- * and so on.
- */
-struct ubi_scan_info {
- struct rb_root volumes;
- struct list_head corr;
- struct list_head free;
- struct list_head erase;
- struct list_head alien;
- int corr_peb_count;
- int empty_peb_count;
- int alien_peb_count;
- int bad_peb_count;
- int maybe_bad_peb_count;
- int vols_found;
- int highest_vol_id;
- int is_empty;
- int min_ec;
- int max_ec;
- unsigned long long max_sqnum;
- int mean_ec;
- uint64_t ec_sum;
- int ec_count;
- struct kmem_cache *scan_leb_slab;
-};
-
-struct ubi_device;
-struct ubi_vid_hdr;
-
-/*
- * ubi_scan_move_to_list - move a PEB from the volume tree to a list.
- *
- * @sv: volume scanning information
- * @seb: scanning eraseblock information
- * @list: the list to move to
- */
-static inline void ubi_scan_move_to_list(struct ubi_scan_volume *sv,
- struct ubi_scan_leb *seb,
- struct list_head *list)
-{
- rb_erase(&seb->u.rb, &sv->root);
- list_add_tail(&seb->u.list, list);
-}
-
-int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
- int pnum, int ec, const struct ubi_vid_hdr *vid_hdr,
- int bitflips);
-struct ubi_scan_volume *ubi_scan_find_sv(const struct ubi_scan_info *si,
- int vol_id);
-struct ubi_scan_leb *ubi_scan_find_seb(const struct ubi_scan_volume *sv,
- int lnum);
-void ubi_scan_rm_volume(struct ubi_scan_info *si, struct ubi_scan_volume *sv);
-struct ubi_scan_leb *ubi_scan_get_free_peb(struct ubi_device *ubi,
- struct ubi_scan_info *si);
-int ubi_scan_erase_peb(struct ubi_device *ubi, const struct ubi_scan_info *si,
- int pnum, int ec);
-struct ubi_scan_info *ubi_scan(struct ubi_device *ubi);
-void ubi_scan_destroy_si(struct ubi_scan_info *si);
-
-#endif /* !__UBI_SCAN_H__ */
diff --git a/drivers/mtd/ubi/ubi-media.h b/drivers/mtd/ubi/ubi-media.h
index 6fb8ec2174a..468ffbc0eab 100644
--- a/drivers/mtd/ubi/ubi-media.h
+++ b/drivers/mtd/ubi/ubi-media.h
@@ -149,10 +149,10 @@ enum {
* The @image_seq field is used to validate a UBI image that has been prepared
* for a UBI device. The @image_seq value can be any value, but it must be the
* same on all eraseblocks. UBI will ensure that all new erase counter headers
- * also contain this value, and will check the value when scanning at start-up.
+ * also contain this value, and will check the value when attaching the flash.
* One way to make use of @image_seq is to increase its value by one every time
* an image is flashed over an existing image, then, if the flashing does not
- * complete, UBI will detect the error when scanning.
+ * complete, UBI will detect the error when attaching the media.
*/
struct ubi_ec_hdr {
__be32 magic;
@@ -298,8 +298,8 @@ struct ubi_vid_hdr {
#define UBI_INT_VOL_COUNT 1
/*
- * Starting ID of internal volumes. There is reserved room for 4096 internal
- * volumes.
+ * Starting ID of internal volumes: 0x7fffefff.
+ * There is reserved room for 4096 internal volumes.
*/
#define UBI_INTERNAL_VOL_START (0x7FFFFFFF - 4096)
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index b162790790a..a1a81c9ea8c 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -43,7 +43,6 @@
#include <asm/pgtable.h>
#include "ubi-media.h"
-#include "scan.h"
/* Maximum number of supported UBI devices */
#define UBI_MAX_DEVICES 32
@@ -66,7 +65,10 @@
/* Background thread name pattern */
#define UBI_BGT_NAME_PATTERN "ubi_bgt%dd"
-/* This marker in the EBA table means that the LEB is um-mapped */
+/*
+ * This marker in the EBA table means that the LEB is um-mapped.
+ * NOTE! It has to have the same value as %UBI_ALL.
+ */
#define UBI_LEB_UNMAPPED -1
/*
@@ -82,6 +84,9 @@
*/
#define UBI_PROT_QUEUE_LEN 10
+/* The volume ID/LEB number/erase counter is unknown */
+#define UBI_UNKNOWN -1
+
/*
* Error codes returned by the I/O sub-system.
*
@@ -222,8 +227,6 @@ struct ubi_volume_desc;
* @upd_ebs: how many eraseblocks are expected to be updated
* @ch_lnum: LEB number which is being changing by the atomic LEB change
* operation
- * @ch_dtype: data persistency type which is being changing by the atomic LEB
- * change operation
* @upd_bytes: how many bytes are expected to be received for volume update or
* atomic LEB change
* @upd_received: how many bytes were already received for volume update or
@@ -270,7 +273,6 @@ struct ubi_volume {
int upd_ebs;
int ch_lnum;
- int ch_dtype;
long long upd_bytes;
long long upd_received;
void *upd_buf;
@@ -477,6 +479,124 @@ struct ubi_device {
struct ubi_debug_info *dbg;
};
+/**
+ * struct ubi_ainf_peb - attach information about a physical eraseblock.
+ * @ec: erase counter (%UBI_UNKNOWN if it is unknown)
+ * @pnum: physical eraseblock number
+ * @vol_id: ID of the volume this LEB belongs to
+ * @lnum: logical eraseblock number
+ * @scrub: if this physical eraseblock needs scrubbing
+ * @copy_flag: this LEB is a copy (@copy_flag is set in VID header of this LEB)
+ * @sqnum: sequence number
+ * @u: unions RB-tree or @list links
+ * @u.rb: link in the per-volume RB-tree of &struct ubi_ainf_peb objects
+ * @u.list: link in one of the eraseblock lists
+ *
+ * One object of this type is allocated for each physical eraseblock when
+ * attaching an MTD device. Note, if this PEB does not belong to any LEB /
+ * volume, the @vol_id and @lnum fields are initialized to %UBI_UNKNOWN.
+ */
+struct ubi_ainf_peb {
+ int ec;
+ int pnum;
+ int vol_id;
+ int lnum;
+ unsigned int scrub:1;
+ unsigned int copy_flag:1;
+ unsigned long long sqnum;
+ union {
+ struct rb_node rb;
+ struct list_head list;
+ } u;
+};
+
+/**
+ * struct ubi_ainf_volume - attaching information about a volume.
+ * @vol_id: volume ID
+ * @highest_lnum: highest logical eraseblock number in this volume
+ * @leb_count: number of logical eraseblocks in this volume
+ * @vol_type: volume type
+ * @used_ebs: number of used logical eraseblocks in this volume (only for
+ * static volumes)
+ * @last_data_size: amount of data in the last logical eraseblock of this
+ * volume (always equivalent to the usable logical eraseblock
+ * size in case of dynamic volumes)
+ * @data_pad: how many bytes at the end of logical eraseblocks of this volume
+ * are not used (due to volume alignment)
+ * @compat: compatibility flags of this volume
+ * @rb: link in the volume RB-tree
+ * @root: root of the RB-tree containing all the eraseblock belonging to this
+ * volume (&struct ubi_ainf_peb objects)
+ *
+ * One object of this type is allocated for each volume when attaching an MTD
+ * device.
+ */
+struct ubi_ainf_volume {
+ int vol_id;
+ int highest_lnum;
+ int leb_count;
+ int vol_type;
+ int used_ebs;
+ int last_data_size;
+ int data_pad;
+ int compat;
+ struct rb_node rb;
+ struct rb_root root;
+};
+
+/**
+ * struct ubi_attach_info - MTD device attaching information.
+ * @volumes: root of the volume RB-tree
+ * @corr: list of corrupted physical eraseblocks
+ * @free: list of free physical eraseblocks
+ * @erase: list of physical eraseblocks which have to be erased
+ * @alien: list of physical eraseblocks which should not be used by UBI (e.g.,
+ * those belonging to "preserve"-compatible internal volumes)
+ * @corr_peb_count: count of PEBs in the @corr list
+ * @empty_peb_count: count of PEBs which are presumably empty (contain only
+ * 0xFF bytes)
+ * @alien_peb_count: count of PEBs in the @alien list
+ * @bad_peb_count: count of bad physical eraseblocks
+ * @maybe_bad_peb_count: count of bad physical eraseblocks which are not marked
+ * as bad yet, but which look like bad
+ * @vols_found: number of volumes found
+ * @highest_vol_id: highest volume ID
+ * @is_empty: flag indicating whether the MTD device is empty or not
+ * @min_ec: lowest erase counter value
+ * @max_ec: highest erase counter value
+ * @max_sqnum: highest sequence number value
+ * @mean_ec: mean erase counter value
+ * @ec_sum: a temporary variable used when calculating @mean_ec
+ * @ec_count: a temporary variable used when calculating @mean_ec
+ * @aeb_slab_cache: slab cache for &struct ubi_ainf_peb objects
+ *
+ * This data structure contains the result of attaching an MTD device and may
+ * be used by other UBI sub-systems to build final UBI data structures, further
+ * error-recovery and so on.
+ */
+struct ubi_attach_info {
+ struct rb_root volumes;
+ struct list_head corr;
+ struct list_head free;
+ struct list_head erase;
+ struct list_head alien;
+ int corr_peb_count;
+ int empty_peb_count;
+ int alien_peb_count;
+ int bad_peb_count;
+ int maybe_bad_peb_count;
+ int vols_found;
+ int highest_vol_id;
+ int is_empty;
+ int min_ec;
+ int max_ec;
+ unsigned long long max_sqnum;
+ int mean_ec;
+ uint64_t ec_sum;
+ int ec_count;
+ struct kmem_cache *aeb_slab_cache;
+};
+
#include "debug.h"
extern struct kmem_cache *ubi_wl_entry_slab;
@@ -487,12 +607,23 @@ extern struct class *ubi_class;
extern struct mutex ubi_devices_mutex;
extern struct blocking_notifier_head ubi_notifiers;
+/* scan.c */
+int ubi_add_to_av(struct ubi_device *ubi, struct ubi_attach_info *ai, int pnum,
+ int ec, const struct ubi_vid_hdr *vid_hdr, int bitflips);
+struct ubi_ainf_volume *ubi_find_av(const struct ubi_attach_info *ai,
+ int vol_id);
+void ubi_remove_av(struct ubi_attach_info *ai, struct ubi_ainf_volume *av);
+struct ubi_ainf_peb *ubi_early_get_peb(struct ubi_device *ubi,
+ struct ubi_attach_info *ai);
+int ubi_attach(struct ubi_device *ubi);
+void ubi_destroy_ai(struct ubi_attach_info *ai);
+
/* vtbl.c */
int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
struct ubi_vtbl_record *vtbl_rec);
int ubi_vtbl_rename_volumes(struct ubi_device *ubi,
struct list_head *rename_list);
-int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si);
+int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_attach_info *ai);
/* vmt.c */
int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req);
@@ -525,22 +656,22 @@ int ubi_eba_unmap_leb(struct ubi_device *ubi, struct ubi_volume *vol,
int ubi_eba_read_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
void *buf, int offset, int len, int check);
int ubi_eba_write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
- const void *buf, int offset, int len, int dtype);
+ const void *buf, int offset, int len);
int ubi_eba_write_leb_st(struct ubi_device *ubi, struct ubi_volume *vol,
- int lnum, const void *buf, int len, int dtype,
- int used_ebs);
+ int lnum, const void *buf, int len, int used_ebs);
int ubi_eba_atomic_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
- int lnum, const void *buf, int len, int dtype);
+ int lnum, const void *buf, int len);
int ubi_eba_copy_leb(struct ubi_device *ubi, int from, int to,
struct ubi_vid_hdr *vid_hdr);
-int ubi_eba_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si);
+int ubi_eba_init(struct ubi_device *ubi, struct ubi_attach_info *ai);
/* wl.c */
-int ubi_wl_get_peb(struct ubi_device *ubi, int dtype);
-int ubi_wl_put_peb(struct ubi_device *ubi, int pnum, int torture);
-int ubi_wl_flush(struct ubi_device *ubi);
+int ubi_wl_get_peb(struct ubi_device *ubi);
+int ubi_wl_put_peb(struct ubi_device *ubi, int vol_id, int lnum,
+ int pnum, int torture);
+int ubi_wl_flush(struct ubi_device *ubi, int vol_id, int lnum);
int ubi_wl_scrub_peb(struct ubi_device *ubi, int pnum);
-int ubi_wl_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si);
+int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai);
void ubi_wl_close(struct ubi_device *ubi);
int ubi_thread(void *u);
@@ -573,6 +704,7 @@ int ubi_volume_notify(struct ubi_device *ubi, struct ubi_volume *vol,
int ubi_notify_all(struct ubi_device *ubi, int ntype,
struct notifier_block *nb);
int ubi_enumerate_volumes(struct notifier_block *nb);
+void ubi_free_internal_volumes(struct ubi_device *ubi);
/* kapi.c */
void ubi_do_get_device_info(struct ubi_device *ubi, struct ubi_device_info *di);
@@ -593,6 +725,21 @@ void ubi_do_get_volume_info(struct ubi_device *ubi, struct ubi_volume *vol,
rb = rb_next(rb), \
pos = (rb ? container_of(rb, typeof(*pos), member) : NULL))
+/*
+ * ubi_move_aeb_to_list - move a PEB from the volume tree to a list.
+ *
+ * @av: volume attaching information
+ * @aeb: attaching eraseblock information
+ * @list: the list to move to
+ */
+static inline void ubi_move_aeb_to_list(struct ubi_ainf_volume *av,
+ struct ubi_ainf_peb *aeb,
+ struct list_head *list)
+{
+ rb_erase(&aeb->u.rb, &av->root);
+ list_add_tail(&aeb->u.list, list);
+}
+
/**
* ubi_zalloc_vid_hdr - allocate a volume identifier header object.
* @ubi: UBI device description object
@@ -667,7 +814,7 @@ static inline void ubi_ro_mode(struct ubi_device *ubi)
if (!ubi->ro_mode) {
ubi->ro_mode = 1;
ubi_warn("switch to read-only mode");
- ubi_dbg_dump_stack();
+ dump_stack();
}
}
diff --git a/drivers/mtd/ubi/upd.c b/drivers/mtd/ubi/upd.c
index 425bf5a3edd..9f2ebd8750e 100644
--- a/drivers/mtd/ubi/upd.c
+++ b/drivers/mtd/ubi/upd.c
@@ -147,7 +147,7 @@ int ubi_start_update(struct ubi_device *ubi, struct ubi_volume *vol,
}
if (bytes == 0) {
- err = ubi_wl_flush(ubi);
+ err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);
if (err)
return err;
@@ -186,14 +186,12 @@ int ubi_start_leb_change(struct ubi_device *ubi, struct ubi_volume *vol,
dbg_gen("start changing LEB %d:%d, %u bytes",
vol->vol_id, req->lnum, req->bytes);
if (req->bytes == 0)
- return ubi_eba_atomic_leb_change(ubi, vol, req->lnum, NULL, 0,
- req->dtype);
+ return ubi_eba_atomic_leb_change(ubi, vol, req->lnum, NULL, 0);
vol->upd_bytes = req->bytes;
vol->upd_received = 0;
vol->changing_leb = 1;
vol->ch_lnum = req->lnum;
- vol->ch_dtype = req->dtype;
vol->upd_buf = vmalloc(req->bytes);
if (!vol->upd_buf)
@@ -246,8 +244,7 @@ static int write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
return 0;
}
- err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, len,
- UBI_UNKNOWN);
+ err = ubi_eba_write_leb(ubi, vol, lnum, buf, 0, len);
} else {
/*
* When writing static volume, and this is the last logical
@@ -259,8 +256,7 @@ static int write_leb(struct ubi_device *ubi, struct ubi_volume *vol, int lnum,
* contain zeros, not random trash.
*/
memset(buf + len, 0, vol->usable_leb_size - len);
- err = ubi_eba_write_leb_st(ubi, vol, lnum, buf, len,
- UBI_UNKNOWN, used_ebs);
+ err = ubi_eba_write_leb_st(ubi, vol, lnum, buf, len, used_ebs);
}
return err;
@@ -365,7 +361,7 @@ int ubi_more_update_data(struct ubi_device *ubi, struct ubi_volume *vol,
ubi_assert(vol->upd_received <= vol->upd_bytes);
if (vol->upd_received == vol->upd_bytes) {
- err = ubi_wl_flush(ubi);
+ err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);
if (err)
return err;
/* The update is finished, clear the update marker */
@@ -421,7 +417,7 @@ int ubi_more_leb_change_data(struct ubi_device *ubi, struct ubi_volume *vol,
len - vol->upd_bytes);
len = ubi_calc_data_len(ubi, vol->upd_buf, len);
err = ubi_eba_atomic_leb_change(ubi, vol, vol->ch_lnum,
- vol->upd_buf, len, UBI_UNKNOWN);
+ vol->upd_buf, len);
if (err)
return err;
}
diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 863835f4aef..0669cff8ac3 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -29,11 +29,7 @@
#include <linux/export.h>
#include "ubi.h"
-#ifdef CONFIG_MTD_UBI_DEBUG
-static int paranoid_check_volumes(struct ubi_device *ubi);
-#else
-#define paranoid_check_volumes(ubi) 0
-#endif
+static int self_check_volumes(struct ubi_device *ubi);
static ssize_t vol_attribute_show(struct device *dev,
struct device_attribute *attr, char *buf);
@@ -227,7 +223,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
}
if (vol_id == UBI_VOL_NUM_AUTO) {
- dbg_err("out of volume IDs");
+ ubi_err("out of volume IDs");
err = -ENFILE;
goto out_unlock;
}
@@ -241,7 +237,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
/* Ensure that this volume does not exist */
err = -EEXIST;
if (ubi->volumes[vol_id]) {
- dbg_err("volume %d already exists", vol_id);
+ ubi_err("volume %d already exists", vol_id);
goto out_unlock;
}
@@ -250,7 +246,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
if (ubi->volumes[i] &&
ubi->volumes[i]->name_len == req->name_len &&
!strcmp(ubi->volumes[i]->name, req->name)) {
- dbg_err("volume \"%s\" exists (ID %d)", req->name, i);
+ ubi_err("volume \"%s\" exists (ID %d)", req->name, i);
goto out_unlock;
}
@@ -261,9 +257,9 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
/* Reserve physical eraseblocks */
if (vol->reserved_pebs > ubi->avail_pebs) {
- dbg_err("not enough PEBs, only %d available", ubi->avail_pebs);
+ ubi_err("not enough PEBs, only %d available", ubi->avail_pebs);
if (ubi->corr_peb_count)
- dbg_err("%d PEBs are corrupted and not used",
+ ubi_err("%d PEBs are corrupted and not used",
ubi->corr_peb_count);
err = -ENOSPC;
goto out_unlock;
@@ -284,7 +280,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
* Finish all pending erases because there may be some LEBs belonging
* to the same volume ID.
*/
- err = ubi_wl_flush(ubi);
+ err = ubi_wl_flush(ubi, vol_id, UBI_ALL);
if (err)
goto out_acc;
@@ -360,8 +356,7 @@ int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
spin_unlock(&ubi->volumes_lock);
ubi_volume_notify(ubi, vol, UBI_VOLUME_ADDED);
- if (paranoid_check_volumes(ubi))
- dbg_err("check failed while creating volume %d", vol_id);
+ self_check_volumes(ubi);
return err;
out_sysfs:
@@ -461,8 +456,8 @@ int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl)
spin_unlock(&ubi->volumes_lock);
ubi_volume_notify(ubi, vol, UBI_VOLUME_REMOVED);
- if (!no_vtbl && paranoid_check_volumes(ubi))
- dbg_err("check failed while removing volume %d", vol_id);
+ if (!no_vtbl)
+ self_check_volumes(ubi);
return err;
@@ -500,7 +495,7 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
if (vol->vol_type == UBI_STATIC_VOLUME &&
reserved_pebs < vol->used_ebs) {
- dbg_err("too small size %d, %d LEBs contain data",
+ ubi_err("too small size %d, %d LEBs contain data",
reserved_pebs, vol->used_ebs);
return -EINVAL;
}
@@ -529,10 +524,10 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
if (pebs > 0) {
spin_lock(&ubi->volumes_lock);
if (pebs > ubi->avail_pebs) {
- dbg_err("not enough PEBs: requested %d, available %d",
+ ubi_err("not enough PEBs: requested %d, available %d",
pebs, ubi->avail_pebs);
if (ubi->corr_peb_count)
- dbg_err("%d PEBs are corrupted and not used",
+ ubi_err("%d PEBs are corrupted and not used",
ubi->corr_peb_count);
spin_unlock(&ubi->volumes_lock);
err = -ENOSPC;
@@ -588,8 +583,7 @@ int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
}
ubi_volume_notify(ubi, vol, UBI_VOLUME_RESIZED);
- if (paranoid_check_volumes(ubi))
- dbg_err("check failed while re-sizing volume %d", vol_id);
+ self_check_volumes(ubi);
return err;
out_acc:
@@ -638,8 +632,8 @@ int ubi_rename_volumes(struct ubi_device *ubi, struct list_head *rename_list)
}
}
- if (!err && paranoid_check_volumes(ubi))
- ;
+ if (!err)
+ self_check_volumes(ubi);
return err;
}
@@ -686,8 +680,7 @@ int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol)
return err;
}
- if (paranoid_check_volumes(ubi))
- dbg_err("check failed while adding volume %d", vol_id);
+ self_check_volumes(ubi);
return err;
out_cdev:
@@ -712,16 +705,14 @@ void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol)
volume_sysfs_close(vol);
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_check_volume - check volume information.
+ * self_check_volume - check volume information.
* @ubi: UBI device description object
* @vol_id: volume ID
*
* Returns zero if volume is all right and a a negative error code if not.
*/
-static int paranoid_check_volume(struct ubi_device *ubi, int vol_id)
+static int self_check_volume(struct ubi_device *ubi, int vol_id)
{
int idx = vol_id2idx(ubi, vol_id);
int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker;
@@ -771,7 +762,7 @@ static int paranoid_check_volume(struct ubi_device *ubi, int vol_id)
}
if (vol->upd_marker && vol->corrupted) {
- dbg_err("update marker and corrupted simultaneously");
+ ubi_err("update marker and corrupted simultaneously");
goto fail;
}
@@ -853,22 +844,22 @@ static int paranoid_check_volume(struct ubi_device *ubi, int vol_id)
return 0;
fail:
- ubi_err("paranoid check failed for volume %d", vol_id);
+ ubi_err("self-check failed for volume %d", vol_id);
if (vol)
- ubi_dbg_dump_vol_info(vol);
- ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
+ ubi_dump_vol_info(vol);
+ ubi_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
dump_stack();
spin_unlock(&ubi->volumes_lock);
return -EINVAL;
}
/**
- * paranoid_check_volumes - check information about all volumes.
+ * self_check_volumes - check information about all volumes.
* @ubi: UBI device description object
*
* Returns zero if volumes are all right and a a negative error code if not.
*/
-static int paranoid_check_volumes(struct ubi_device *ubi)
+static int self_check_volumes(struct ubi_device *ubi)
{
int i, err = 0;
@@ -876,11 +867,10 @@ static int paranoid_check_volumes(struct ubi_device *ubi)
return 0;
for (i = 0; i < ubi->vtbl_slots; i++) {
- err = paranoid_check_volume(ubi, i);
+ err = self_check_volume(ubi, i);
if (err)
break;
}
return err;
}
-#endif
diff --git a/drivers/mtd/ubi/vtbl.c b/drivers/mtd/ubi/vtbl.c
index 17cec0c0154..437bc193e17 100644
--- a/drivers/mtd/ubi/vtbl.c
+++ b/drivers/mtd/ubi/vtbl.c
@@ -37,16 +37,15 @@
* LEB 1. This scheme guarantees recoverability from unclean reboots.
*
* In this UBI implementation the on-flash volume table does not contain any
- * information about how many data static volumes contain. This information may
- * be found from the scanning data.
+ * information about how much data static volumes contain.
*
* But it would still be beneficial to store this information in the volume
* table. For example, suppose we have a static volume X, and all its physical
* eraseblocks became bad for some reasons. Suppose we are attaching the
- * corresponding MTD device, the scanning has found no logical eraseblocks
+ * corresponding MTD device, for some reason we find no logical eraseblocks
* corresponding to the volume X. According to the volume table volume X does
* exist. So we don't know whether it is just empty or all its physical
- * eraseblocks went bad. So we cannot alarm the user about this corruption.
+ * eraseblocks went bad. So we cannot alarm the user properly.
*
* The volume table also stores so-called "update marker", which is used for
* volume updates. Before updating the volume, the update marker is set, and
@@ -62,11 +61,7 @@
#include <asm/div64.h>
#include "ubi.h"
-#ifdef CONFIG_MTD_UBI_DEBUG
-static void paranoid_vtbl_check(const struct ubi_device *ubi);
-#else
-#define paranoid_vtbl_check(ubi)
-#endif
+static void self_vtbl_check(const struct ubi_device *ubi);
/* Empty volume table record */
static struct ubi_vtbl_record empty_vtbl_record;
@@ -106,12 +101,12 @@ int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,
return err;
err = ubi_eba_write_leb(ubi, layout_vol, i, ubi->vtbl, 0,
- ubi->vtbl_size, UBI_LONGTERM);
+ ubi->vtbl_size);
if (err)
return err;
}
- paranoid_vtbl_check(ubi);
+ self_vtbl_check(ubi);
return 0;
}
@@ -158,7 +153,7 @@ int ubi_vtbl_rename_volumes(struct ubi_device *ubi,
return err;
err = ubi_eba_write_leb(ubi, layout_vol, i, ubi->vtbl, 0,
- ubi->vtbl_size, UBI_LONGTERM);
+ ubi->vtbl_size);
if (err)
return err;
}
@@ -197,7 +192,7 @@ static int vtbl_check(const struct ubi_device *ubi,
if (be32_to_cpu(vtbl[i].crc) != crc) {
ubi_err("bad CRC at record %u: %#08x, not %#08x",
i, crc, be32_to_cpu(vtbl[i].crc));
- ubi_dbg_dump_vtbl_record(&vtbl[i], i);
+ ubi_dump_vtbl_record(&vtbl[i], i);
return 1;
}
@@ -229,7 +224,7 @@ static int vtbl_check(const struct ubi_device *ubi,
n = ubi->leb_size % alignment;
if (data_pad != n) {
- dbg_err("bad data_pad, has to be %d", n);
+ ubi_err("bad data_pad, has to be %d", n);
err = 6;
goto bad;
}
@@ -245,7 +240,7 @@ static int vtbl_check(const struct ubi_device *ubi,
}
if (reserved_pebs > ubi->good_peb_count) {
- dbg_err("too large reserved_pebs %d, good PEBs %d",
+ ubi_err("too large reserved_pebs %d, good PEBs %d",
reserved_pebs, ubi->good_peb_count);
err = 9;
goto bad;
@@ -277,8 +272,8 @@ static int vtbl_check(const struct ubi_device *ubi,
!strncmp(vtbl[i].name, vtbl[n].name, len1)) {
ubi_err("volumes %d and %d have the same name"
" \"%s\"", i, n, vtbl[i].name);
- ubi_dbg_dump_vtbl_record(&vtbl[i], i);
- ubi_dbg_dump_vtbl_record(&vtbl[n], n);
+ ubi_dump_vtbl_record(&vtbl[i], i);
+ ubi_dump_vtbl_record(&vtbl[n], n);
return -EINVAL;
}
}
@@ -288,26 +283,26 @@ static int vtbl_check(const struct ubi_device *ubi,
bad:
ubi_err("volume table check failed: record %d, error %d", i, err);
- ubi_dbg_dump_vtbl_record(&vtbl[i], i);
+ ubi_dump_vtbl_record(&vtbl[i], i);
return -EINVAL;
}
/**
* create_vtbl - create a copy of volume table.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
* @copy: number of the volume table copy
* @vtbl: contents of the volume table
*
* This function returns zero in case of success and a negative error code in
* case of failure.
*/
-static int create_vtbl(struct ubi_device *ubi, struct ubi_scan_info *si,
+static int create_vtbl(struct ubi_device *ubi, struct ubi_attach_info *ai,
int copy, void *vtbl)
{
int err, tries = 0;
struct ubi_vid_hdr *vid_hdr;
- struct ubi_scan_leb *new_seb;
+ struct ubi_ainf_peb *new_aeb;
ubi_msg("create volume table (copy #%d)", copy + 1);
@@ -316,9 +311,9 @@ static int create_vtbl(struct ubi_device *ubi, struct ubi_scan_info *si,
return -ENOMEM;
retry:
- new_seb = ubi_scan_get_free_peb(ubi, si);
- if (IS_ERR(new_seb)) {
- err = PTR_ERR(new_seb);
+ new_aeb = ubi_early_get_peb(ubi, ai);
+ if (IS_ERR(new_aeb)) {
+ err = PTR_ERR(new_aeb);
goto out_free;
}
@@ -328,25 +323,24 @@ retry:
vid_hdr->data_size = vid_hdr->used_ebs =
vid_hdr->data_pad = cpu_to_be32(0);
vid_hdr->lnum = cpu_to_be32(copy);
- vid_hdr->sqnum = cpu_to_be64(++si->max_sqnum);
+ vid_hdr->sqnum = cpu_to_be64(++ai->max_sqnum);
/* The EC header is already there, write the VID header */
- err = ubi_io_write_vid_hdr(ubi, new_seb->pnum, vid_hdr);
+ err = ubi_io_write_vid_hdr(ubi, new_aeb->pnum, vid_hdr);
if (err)
goto write_error;
/* Write the layout volume contents */
- err = ubi_io_write_data(ubi, vtbl, new_seb->pnum, 0, ubi->vtbl_size);
+ err = ubi_io_write_data(ubi, vtbl, new_aeb->pnum, 0, ubi->vtbl_size);
if (err)
goto write_error;
/*
- * And add it to the scanning information. Don't delete the old version
- * of this LEB as it will be deleted and freed in 'ubi_scan_add_used()'.
+ * And add it to the attaching information. Don't delete the old version
+ * of this LEB as it will be deleted and freed in 'ubi_add_to_av()'.
*/
- err = ubi_scan_add_used(ubi, si, new_seb->pnum, new_seb->ec,
- vid_hdr, 0);
- kfree(new_seb);
+ err = ubi_add_to_av(ubi, ai, new_aeb->pnum, new_aeb->ec, vid_hdr, 0);
+ kfree(new_aeb);
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
@@ -356,10 +350,10 @@ write_error:
* Probably this physical eraseblock went bad, try to pick
* another one.
*/
- list_add(&new_seb->u.list, &si->erase);
+ list_add(&new_aeb->u.list, &ai->erase);
goto retry;
}
- kfree(new_seb);
+ kfree(new_aeb);
out_free:
ubi_free_vid_hdr(ubi, vid_hdr);
return err;
@@ -369,20 +363,20 @@ out_free:
/**
* process_lvol - process the layout volume.
* @ubi: UBI device description object
- * @si: scanning information
- * @sv: layout volume scanning information
+ * @ai: attaching information
+ * @av: layout volume attaching information
*
* This function is responsible for reading the layout volume, ensuring it is
* not corrupted, and recovering from corruptions if needed. Returns volume
* table in case of success and a negative error code in case of failure.
*/
static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,
- struct ubi_scan_info *si,
- struct ubi_scan_volume *sv)
+ struct ubi_attach_info *ai,
+ struct ubi_ainf_volume *av)
{
int err;
struct rb_node *rb;
- struct ubi_scan_leb *seb;
+ struct ubi_ainf_peb *aeb;
struct ubi_vtbl_record *leb[UBI_LAYOUT_VOLUME_EBS] = { NULL, NULL };
int leb_corrupted[UBI_LAYOUT_VOLUME_EBS] = {1, 1};
@@ -414,14 +408,14 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,
dbg_gen("check layout volume");
/* Read both LEB 0 and LEB 1 into memory */
- ubi_rb_for_each_entry(rb, seb, &sv->root, u.rb) {
- leb[seb->lnum] = vzalloc(ubi->vtbl_size);
- if (!leb[seb->lnum]) {
+ ubi_rb_for_each_entry(rb, aeb, &av->root, u.rb) {
+ leb[aeb->lnum] = vzalloc(ubi->vtbl_size);
+ if (!leb[aeb->lnum]) {
err = -ENOMEM;
goto out_free;
}
- err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0,
+ err = ubi_io_read_data(ubi, leb[aeb->lnum], aeb->pnum, 0,
ubi->vtbl_size);
if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err))
/*
@@ -429,12 +423,12 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,
* uncorrectable ECC error, but we have our own CRC and
* the data will be checked later. If the data is OK,
* the PEB will be scrubbed (because we set
- * seb->scrub). If the data is not OK, the contents of
+ * aeb->scrub). If the data is not OK, the contents of
* the PEB will be recovered from the second copy, and
- * seb->scrub will be cleared in
- * 'ubi_scan_add_used()'.
+ * aeb->scrub will be cleared in
+ * 'ubi_add_to_av()'.
*/
- seb->scrub = 1;
+ aeb->scrub = 1;
else if (err)
goto out_free;
}
@@ -453,7 +447,7 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,
ubi->vtbl_size);
if (leb_corrupted[1]) {
ubi_warn("volume table copy #2 is corrupted");
- err = create_vtbl(ubi, si, 1, leb[0]);
+ err = create_vtbl(ubi, ai, 1, leb[0]);
if (err)
goto out_free;
ubi_msg("volume table was restored");
@@ -476,7 +470,7 @@ static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,
}
ubi_warn("volume table copy #1 is corrupted");
- err = create_vtbl(ubi, si, 0, leb[1]);
+ err = create_vtbl(ubi, ai, 0, leb[1]);
if (err)
goto out_free;
ubi_msg("volume table was restored");
@@ -494,13 +488,13 @@ out_free:
/**
* create_empty_lvol - create empty layout volume.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function returns volume table contents in case of success and a
* negative error code in case of failure.
*/
static struct ubi_vtbl_record *create_empty_lvol(struct ubi_device *ubi,
- struct ubi_scan_info *si)
+ struct ubi_attach_info *ai)
{
int i;
struct ubi_vtbl_record *vtbl;
@@ -515,7 +509,7 @@ static struct ubi_vtbl_record *create_empty_lvol(struct ubi_device *ubi,
for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {
int err;
- err = create_vtbl(ubi, si, i, vtbl);
+ err = create_vtbl(ubi, ai, i, vtbl);
if (err) {
vfree(vtbl);
return ERR_PTR(err);
@@ -528,18 +522,19 @@ static struct ubi_vtbl_record *create_empty_lvol(struct ubi_device *ubi,
/**
* init_volumes - initialize volume information for existing volumes.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: scanning information
* @vtbl: volume table
*
* This function allocates volume description objects for existing volumes.
* Returns zero in case of success and a negative error code in case of
* failure.
*/
-static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si,
+static int init_volumes(struct ubi_device *ubi,
+ const struct ubi_attach_info *ai,
const struct ubi_vtbl_record *vtbl)
{
int i, reserved_pebs = 0;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_volume *av;
struct ubi_volume *vol;
for (i = 0; i < ubi->vtbl_slots; i++) {
@@ -595,8 +590,8 @@ static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si,
}
/* Static volumes only */
- sv = ubi_scan_find_sv(si, i);
- if (!sv) {
+ av = ubi_find_av(ai, i);
+ if (!av) {
/*
* No eraseblocks belonging to this volume found. We
* don't actually know whether this static volume is
@@ -608,22 +603,22 @@ static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si,
continue;
}
- if (sv->leb_count != sv->used_ebs) {
+ if (av->leb_count != av->used_ebs) {
/*
* We found a static volume which misses several
* eraseblocks. Treat it as corrupted.
*/
ubi_warn("static volume %d misses %d LEBs - corrupted",
- sv->vol_id, sv->used_ebs - sv->leb_count);
+ av->vol_id, av->used_ebs - av->leb_count);
vol->corrupted = 1;
continue;
}
- vol->used_ebs = sv->used_ebs;
+ vol->used_ebs = av->used_ebs;
vol->used_bytes =
(long long)(vol->used_ebs - 1) * vol->usable_leb_size;
- vol->used_bytes += sv->last_data_size;
- vol->last_eb_bytes = sv->last_data_size;
+ vol->used_bytes += av->last_data_size;
+ vol->last_eb_bytes = av->last_data_size;
}
/* And add the layout volume */
@@ -664,105 +659,104 @@ static int init_volumes(struct ubi_device *ubi, const struct ubi_scan_info *si,
}
/**
- * check_sv - check volume scanning information.
+ * check_av - check volume attaching information.
* @vol: UBI volume description object
- * @sv: volume scanning information
+ * @av: volume attaching information
*
- * This function returns zero if the volume scanning information is consistent
+ * This function returns zero if the volume attaching information is consistent
* to the data read from the volume tabla, and %-EINVAL if not.
*/
-static int check_sv(const struct ubi_volume *vol,
- const struct ubi_scan_volume *sv)
+static int check_av(const struct ubi_volume *vol,
+ const struct ubi_ainf_volume *av)
{
int err;
- if (sv->highest_lnum >= vol->reserved_pebs) {
+ if (av->highest_lnum >= vol->reserved_pebs) {
err = 1;
goto bad;
}
- if (sv->leb_count > vol->reserved_pebs) {
+ if (av->leb_count > vol->reserved_pebs) {
err = 2;
goto bad;
}
- if (sv->vol_type != vol->vol_type) {
+ if (av->vol_type != vol->vol_type) {
err = 3;
goto bad;
}
- if (sv->used_ebs > vol->reserved_pebs) {
+ if (av->used_ebs > vol->reserved_pebs) {
err = 4;
goto bad;
}
- if (sv->data_pad != vol->data_pad) {
+ if (av->data_pad != vol->data_pad) {
err = 5;
goto bad;
}
return 0;
bad:
- ubi_err("bad scanning information, error %d", err);
- ubi_dbg_dump_sv(sv);
- ubi_dbg_dump_vol_info(vol);
+ ubi_err("bad attaching information, error %d", err);
+ ubi_dump_av(av);
+ ubi_dump_vol_info(vol);
return -EINVAL;
}
/**
- * check_scanning_info - check that scanning information.
+ * check_attaching_info - check that attaching information.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* Even though we protect on-flash data by CRC checksums, we still don't trust
- * the media. This function ensures that scanning information is consistent to
- * the information read from the volume table. Returns zero if the scanning
+ * the media. This function ensures that attaching information is consistent to
+ * the information read from the volume table. Returns zero if the attaching
* information is OK and %-EINVAL if it is not.
*/
-static int check_scanning_info(const struct ubi_device *ubi,
- struct ubi_scan_info *si)
+static int check_attaching_info(const struct ubi_device *ubi,
+ struct ubi_attach_info *ai)
{
int err, i;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_volume *av;
struct ubi_volume *vol;
- if (si->vols_found > UBI_INT_VOL_COUNT + ubi->vtbl_slots) {
- ubi_err("scanning found %d volumes, maximum is %d + %d",
- si->vols_found, UBI_INT_VOL_COUNT, ubi->vtbl_slots);
+ if (ai->vols_found > UBI_INT_VOL_COUNT + ubi->vtbl_slots) {
+ ubi_err("found %d volumes while attaching, maximum is %d + %d",
+ ai->vols_found, UBI_INT_VOL_COUNT, ubi->vtbl_slots);
return -EINVAL;
}
- if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT &&
- si->highest_vol_id < UBI_INTERNAL_VOL_START) {
- ubi_err("too large volume ID %d found by scanning",
- si->highest_vol_id);
+ if (ai->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT &&
+ ai->highest_vol_id < UBI_INTERNAL_VOL_START) {
+ ubi_err("too large volume ID %d found", ai->highest_vol_id);
return -EINVAL;
}
for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
cond_resched();
- sv = ubi_scan_find_sv(si, i);
+ av = ubi_find_av(ai, i);
vol = ubi->volumes[i];
if (!vol) {
- if (sv)
- ubi_scan_rm_volume(si, sv);
+ if (av)
+ ubi_remove_av(ai, av);
continue;
}
if (vol->reserved_pebs == 0) {
ubi_assert(i < ubi->vtbl_slots);
- if (!sv)
+ if (!av)
continue;
/*
- * During scanning we found a volume which does not
+ * During attaching we found a volume which does not
* exist according to the information in the volume
* table. This must have happened due to an unclean
* reboot while the volume was being removed. Discard
* these eraseblocks.
*/
- ubi_msg("finish volume %d removal", sv->vol_id);
- ubi_scan_rm_volume(si, sv);
- } else if (sv) {
- err = check_sv(vol, sv);
+ ubi_msg("finish volume %d removal", av->vol_id);
+ ubi_remove_av(ai, av);
+ } else if (av) {
+ err = check_av(vol, av);
if (err)
return err;
}
@@ -774,16 +768,16 @@ static int check_scanning_info(const struct ubi_device *ubi,
/**
* ubi_read_volume_table - read the volume table.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function reads volume table, checks it, recover from errors if needed,
* or creates it if needed. Returns zero in case of success and a negative
* error code in case of failure.
*/
-int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si)
+int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_attach_info *ai)
{
int i, err;
- struct ubi_scan_volume *sv;
+ struct ubi_ainf_volume *av;
empty_vtbl_record.crc = cpu_to_be32(0xf116c36b);
@@ -798,8 +792,8 @@ int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si)
ubi->vtbl_size = ubi->vtbl_slots * UBI_VTBL_RECORD_SIZE;
ubi->vtbl_size = ALIGN(ubi->vtbl_size, ubi->min_io_size);
- sv = ubi_scan_find_sv(si, UBI_LAYOUT_VOLUME_ID);
- if (!sv) {
+ av = ubi_find_av(ai, UBI_LAYOUT_VOLUME_ID);
+ if (!av) {
/*
* No logical eraseblocks belonging to the layout volume were
* found. This could mean that the flash is just empty. In
@@ -808,8 +802,8 @@ int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si)
* But if flash is not empty this must be a corruption or the
* MTD device just contains garbage.
*/
- if (si->is_empty) {
- ubi->vtbl = create_empty_lvol(ubi, si);
+ if (ai->is_empty) {
+ ubi->vtbl = create_empty_lvol(ubi, ai);
if (IS_ERR(ubi->vtbl))
return PTR_ERR(ubi->vtbl);
} else {
@@ -817,14 +811,14 @@ int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si)
return -EINVAL;
}
} else {
- if (sv->leb_count > UBI_LAYOUT_VOLUME_EBS) {
+ if (av->leb_count > UBI_LAYOUT_VOLUME_EBS) {
/* This must not happen with proper UBI images */
- dbg_err("too many LEBs (%d) in layout volume",
- sv->leb_count);
+ ubi_err("too many LEBs (%d) in layout volume",
+ av->leb_count);
return -EINVAL;
}
- ubi->vtbl = process_lvol(ubi, si, sv);
+ ubi->vtbl = process_lvol(ubi, ai, av);
if (IS_ERR(ubi->vtbl))
return PTR_ERR(ubi->vtbl);
}
@@ -835,15 +829,15 @@ int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_scan_info *si)
* The layout volume is OK, initialize the corresponding in-RAM data
* structures.
*/
- err = init_volumes(ubi, si, ubi->vtbl);
+ err = init_volumes(ubi, ai, ubi->vtbl);
if (err)
goto out_free;
/*
- * Make sure that the scanning information is consistent to the
+ * Make sure that the attaching information is consistent to the
* information stored in the volume table.
*/
- err = check_scanning_info(ubi, si);
+ err = check_attaching_info(ubi, ai);
if (err)
goto out_free;
@@ -858,21 +852,17 @@ out_free:
return err;
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_vtbl_check - check volume table.
+ * self_vtbl_check - check volume table.
* @ubi: UBI device description object
*/
-static void paranoid_vtbl_check(const struct ubi_device *ubi)
+static void self_vtbl_check(const struct ubi_device *ubi)
{
if (!ubi->dbg->chk_gen)
return;
if (vtbl_check(ubi, ubi->vtbl)) {
- ubi_err("paranoid check failed");
+ ubi_err("self-check failed");
BUG();
}
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 7c1a9bf8ac8..9df100a4ec3 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -41,12 +41,6 @@
* physical eraseblocks with low erase counter to free physical eraseblocks
* with high erase counter.
*
- * The 'ubi_wl_get_peb()' function accepts data type hints which help to pick
- * an "optimal" physical eraseblock. For example, when it is known that the
- * physical eraseblock will be "put" soon because it contains short-term data,
- * the WL sub-system may pick a free physical eraseblock with low erase
- * counter, and so forth.
- *
* If the WL sub-system fails to erase a physical eraseblock, it marks it as
* bad.
*
@@ -70,8 +64,7 @@
* to the user; instead, we first want to let users fill them up with data;
*
* o there is a chance that the user will put the physical eraseblock very
- * soon, so it makes sense not to move it for some time, but wait; this is
- * especially important in case of "short term" physical eraseblocks.
+ * soon, so it makes sense not to move it for some time, but wait.
*
* Physical eraseblocks stay protected only for limited time. But the "time" is
* measured in erase cycles in this case. This is implemented with help of the
@@ -147,6 +140,8 @@
* @list: a link in the list of pending works
* @func: worker function
* @e: physical eraseblock to erase
+ * @vol_id: the volume ID on which this erasure is being performed
+ * @lnum: the logical eraseblock number
* @torture: if the physical eraseblock has to be tortured
*
* The @func pointer points to the worker function. If the @cancel argument is
@@ -159,21 +154,16 @@ struct ubi_work {
int (*func)(struct ubi_device *ubi, struct ubi_work *wrk, int cancel);
/* The below fields are only relevant to erasure works */
struct ubi_wl_entry *e;
+ int vol_id;
+ int lnum;
int torture;
};
-#ifdef CONFIG_MTD_UBI_DEBUG
-static int paranoid_check_ec(struct ubi_device *ubi, int pnum, int ec);
-static int paranoid_check_in_wl_tree(const struct ubi_device *ubi,
- struct ubi_wl_entry *e,
- struct rb_root *root);
-static int paranoid_check_in_pq(const struct ubi_device *ubi,
- struct ubi_wl_entry *e);
-#else
-#define paranoid_check_ec(ubi, pnum, ec) 0
-#define paranoid_check_in_wl_tree(ubi, e, root)
-#define paranoid_check_in_pq(ubi, e) 0
-#endif
+static int self_check_ec(struct ubi_device *ubi, int pnum, int ec);
+static int self_check_in_wl_tree(const struct ubi_device *ubi,
+ struct ubi_wl_entry *e, struct rb_root *root);
+static int self_check_in_pq(const struct ubi_device *ubi,
+ struct ubi_wl_entry *e);
/**
* wl_tree_add - add a wear-leveling entry to a WL RB-tree.
@@ -383,19 +373,15 @@ static struct ubi_wl_entry *find_wl_entry(struct rb_root *root, int diff)
/**
* ubi_wl_get_peb - get a physical eraseblock.
* @ubi: UBI device description object
- * @dtype: type of data which will be stored in this physical eraseblock
*
* This function returns a physical eraseblock in case of success and a
* negative error code in case of failure. Might sleep.
*/
-int ubi_wl_get_peb(struct ubi_device *ubi, int dtype)
+int ubi_wl_get_peb(struct ubi_device *ubi)
{
int err;
struct ubi_wl_entry *e, *first, *last;
- ubi_assert(dtype == UBI_LONGTERM || dtype == UBI_SHORTTERM ||
- dtype == UBI_UNKNOWN);
-
retry:
spin_lock(&ubi->wl_lock);
if (!ubi->free.rb_node) {
@@ -413,45 +399,15 @@ retry:
goto retry;
}
- switch (dtype) {
- case UBI_LONGTERM:
- /*
- * For long term data we pick a physical eraseblock with high
- * erase counter. But the highest erase counter we can pick is
- * bounded by the the lowest erase counter plus
- * %WL_FREE_MAX_DIFF.
- */
- e = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF);
- break;
- case UBI_UNKNOWN:
- /*
- * For unknown data we pick a physical eraseblock with medium
- * erase counter. But we by no means can pick a physical
- * eraseblock with erase counter greater or equivalent than the
- * lowest erase counter plus %WL_FREE_MAX_DIFF/2.
- */
- first = rb_entry(rb_first(&ubi->free), struct ubi_wl_entry,
- u.rb);
- last = rb_entry(rb_last(&ubi->free), struct ubi_wl_entry, u.rb);
-
- if (last->ec - first->ec < WL_FREE_MAX_DIFF)
- e = rb_entry(ubi->free.rb_node,
- struct ubi_wl_entry, u.rb);
- else
- e = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF/2);
- break;
- case UBI_SHORTTERM:
- /*
- * For short term data we pick a physical eraseblock with the
- * lowest erase counter as we expect it will be erased soon.
- */
- e = rb_entry(rb_first(&ubi->free), struct ubi_wl_entry, u.rb);
- break;
- default:
- BUG();
- }
+ first = rb_entry(rb_first(&ubi->free), struct ubi_wl_entry, u.rb);
+ last = rb_entry(rb_last(&ubi->free), struct ubi_wl_entry, u.rb);
+
+ if (last->ec - first->ec < WL_FREE_MAX_DIFF)
+ e = rb_entry(ubi->free.rb_node, struct ubi_wl_entry, u.rb);
+ else
+ e = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF/2);
- paranoid_check_in_wl_tree(ubi, e, &ubi->free);
+ self_check_in_wl_tree(ubi, e, &ubi->free);
/*
* Move the physical eraseblock to the protection queue where it will
@@ -462,8 +418,8 @@ retry:
prot_queue_add(ubi, e);
spin_unlock(&ubi->wl_lock);
- err = ubi_dbg_check_all_ff(ubi, e->pnum, ubi->vid_hdr_aloffset,
- ubi->peb_size - ubi->vid_hdr_aloffset);
+ err = ubi_self_check_all_ff(ubi, e->pnum, ubi->vid_hdr_aloffset,
+ ubi->peb_size - ubi->vid_hdr_aloffset);
if (err) {
ubi_err("new PEB %d does not contain all 0xFF bytes", e->pnum);
return err;
@@ -488,7 +444,7 @@ static int prot_queue_del(struct ubi_device *ubi, int pnum)
if (!e)
return -ENODEV;
- if (paranoid_check_in_pq(ubi, e))
+ if (self_check_in_pq(ubi, e))
return -ENODEV;
list_del(&e->u.list);
@@ -514,7 +470,7 @@ static int sync_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
dbg_wl("erase PEB %d, old EC %llu", e->pnum, ec);
- err = paranoid_check_ec(ubi, e->pnum, e->ec);
+ err = self_check_ec(ubi, e->pnum, e->ec);
if (err)
return -EINVAL;
@@ -627,13 +583,15 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
* schedule_erase - schedule an erase work.
* @ubi: UBI device description object
* @e: the WL entry of the physical eraseblock to erase
+ * @vol_id: the volume ID that last used this PEB
+ * @lnum: the last used logical eraseblock number for the PEB
* @torture: if the physical eraseblock has to be tortured
*
* This function returns zero in case of success and a %-ENOMEM in case of
* failure.
*/
static int schedule_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
- int torture)
+ int vol_id, int lnum, int torture)
{
struct ubi_work *wl_wrk;
@@ -646,6 +604,8 @@ static int schedule_erase(struct ubi_device *ubi, struct ubi_wl_entry *e,
wl_wrk->func = &erase_worker;
wl_wrk->e = e;
+ wl_wrk->vol_id = vol_id;
+ wl_wrk->lnum = lnum;
wl_wrk->torture = torture;
schedule_ubi_work(ubi, wl_wrk);
@@ -714,7 +674,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
e1->ec, e2->ec);
goto out_cancel;
}
- paranoid_check_in_wl_tree(ubi, e1, &ubi->used);
+ self_check_in_wl_tree(ubi, e1, &ubi->used);
rb_erase(&e1->u.rb, &ubi->used);
dbg_wl("move PEB %d EC %d to PEB %d EC %d",
e1->pnum, e1->ec, e2->pnum, e2->ec);
@@ -723,12 +683,12 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
scrubbing = 1;
e1 = rb_entry(rb_first(&ubi->scrub), struct ubi_wl_entry, u.rb);
e2 = find_wl_entry(&ubi->free, WL_FREE_MAX_DIFF);
- paranoid_check_in_wl_tree(ubi, e1, &ubi->scrub);
+ self_check_in_wl_tree(ubi, e1, &ubi->scrub);
rb_erase(&e1->u.rb, &ubi->scrub);
dbg_wl("scrub PEB %d to PEB %d", e1->pnum, e2->pnum);
}
- paranoid_check_in_wl_tree(ubi, e2, &ubi->free);
+ self_check_in_wl_tree(ubi, e2, &ubi->free);
rb_erase(&e2->u.rb, &ubi->free);
ubi->move_from = e1;
ubi->move_to = e2;
@@ -846,7 +806,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
ubi->move_to_put = ubi->wl_scheduled = 0;
spin_unlock(&ubi->wl_lock);
- err = schedule_erase(ubi, e1, 0);
+ err = schedule_erase(ubi, e1, vol_id, lnum, 0);
if (err) {
kmem_cache_free(ubi_wl_entry_slab, e1);
if (e2)
@@ -861,7 +821,7 @@ static int wear_leveling_worker(struct ubi_device *ubi, struct ubi_work *wrk,
*/
dbg_wl("PEB %d (LEB %d:%d) was put meanwhile, erase",
e2->pnum, vol_id, lnum);
- err = schedule_erase(ubi, e2, 0);
+ err = schedule_erase(ubi, e2, vol_id, lnum, 0);
if (err) {
kmem_cache_free(ubi_wl_entry_slab, e2);
goto out_ro;
@@ -900,7 +860,7 @@ out_not_moved:
spin_unlock(&ubi->wl_lock);
ubi_free_vid_hdr(ubi, vid_hdr);
- err = schedule_erase(ubi, e2, torture);
+ err = schedule_erase(ubi, e2, vol_id, lnum, torture);
if (err) {
kmem_cache_free(ubi_wl_entry_slab, e2);
goto out_ro;
@@ -1019,6 +979,8 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
{
struct ubi_wl_entry *e = wl_wrk->e;
int pnum = e->pnum, err, need;
+ int vol_id = wl_wrk->vol_id;
+ int lnum = wl_wrk->lnum;
if (cancel) {
dbg_wl("cancel erasure of PEB %d EC %d", pnum, e->ec);
@@ -1027,7 +989,8 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
return 0;
}
- dbg_wl("erase PEB %d EC %d", pnum, e->ec);
+ dbg_wl("erase PEB %d EC %d LEB %d:%d",
+ pnum, e->ec, wl_wrk->vol_id, wl_wrk->lnum);
err = sync_erase(ubi, e, wl_wrk->torture);
if (!err) {
@@ -1057,7 +1020,7 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
int err1;
/* Re-schedule the LEB for erasure */
- err1 = schedule_erase(ubi, e, 0);
+ err1 = schedule_erase(ubi, e, vol_id, lnum, 0);
if (err1) {
err = err1;
goto out_ro;
@@ -1125,6 +1088,8 @@ out_ro:
/**
* ubi_wl_put_peb - return a PEB to the wear-leveling sub-system.
* @ubi: UBI device description object
+ * @vol_id: the volume ID that last used this PEB
+ * @lnum: the last used logical eraseblock number for the PEB
* @pnum: physical eraseblock to return
* @torture: if this physical eraseblock has to be tortured
*
@@ -1133,7 +1098,8 @@ out_ro:
* occurred to this @pnum and it has to be tested. This function returns zero
* in case of success, and a negative error code in case of failure.
*/
-int ubi_wl_put_peb(struct ubi_device *ubi, int pnum, int torture)
+int ubi_wl_put_peb(struct ubi_device *ubi, int vol_id, int lnum,
+ int pnum, int torture)
{
int err;
struct ubi_wl_entry *e;
@@ -1175,13 +1141,13 @@ retry:
return 0;
} else {
if (in_wl_tree(e, &ubi->used)) {
- paranoid_check_in_wl_tree(ubi, e, &ubi->used);
+ self_check_in_wl_tree(ubi, e, &ubi->used);
rb_erase(&e->u.rb, &ubi->used);
} else if (in_wl_tree(e, &ubi->scrub)) {
- paranoid_check_in_wl_tree(ubi, e, &ubi->scrub);
+ self_check_in_wl_tree(ubi, e, &ubi->scrub);
rb_erase(&e->u.rb, &ubi->scrub);
} else if (in_wl_tree(e, &ubi->erroneous)) {
- paranoid_check_in_wl_tree(ubi, e, &ubi->erroneous);
+ self_check_in_wl_tree(ubi, e, &ubi->erroneous);
rb_erase(&e->u.rb, &ubi->erroneous);
ubi->erroneous_peb_count -= 1;
ubi_assert(ubi->erroneous_peb_count >= 0);
@@ -1199,7 +1165,7 @@ retry:
}
spin_unlock(&ubi->wl_lock);
- err = schedule_erase(ubi, e, torture);
+ err = schedule_erase(ubi, e, vol_id, lnum, torture);
if (err) {
spin_lock(&ubi->wl_lock);
wl_tree_add(e, &ubi->used);
@@ -1248,7 +1214,7 @@ retry:
}
if (in_wl_tree(e, &ubi->used)) {
- paranoid_check_in_wl_tree(ubi, e, &ubi->used);
+ self_check_in_wl_tree(ubi, e, &ubi->used);
rb_erase(&e->u.rb, &ubi->used);
} else {
int err;
@@ -1275,44 +1241,55 @@ retry:
/**
* ubi_wl_flush - flush all pending works.
* @ubi: UBI device description object
+ * @vol_id: the volume id to flush for
+ * @lnum: the logical eraseblock number to flush for
*
- * This function returns zero in case of success and a negative error code in
- * case of failure.
+ * This function executes all pending works for a particular volume id /
+ * logical eraseblock number pair. If either value is set to %UBI_ALL, then it
+ * acts as a wildcard for all of the corresponding volume numbers or logical
+ * eraseblock numbers. It returns zero in case of success and a negative error
+ * code in case of failure.
*/
-int ubi_wl_flush(struct ubi_device *ubi)
+int ubi_wl_flush(struct ubi_device *ubi, int vol_id, int lnum)
{
- int err;
+ int err = 0;
+ int found = 1;
/*
* Erase while the pending works queue is not empty, but not more than
* the number of currently pending works.
*/
- dbg_wl("flush (%d pending works)", ubi->works_count);
- while (ubi->works_count) {
- err = do_work(ubi);
- if (err)
- return err;
- }
+ dbg_wl("flush pending work for LEB %d:%d (%d pending works)",
+ vol_id, lnum, ubi->works_count);
- /*
- * Make sure all the works which have been done in parallel are
- * finished.
- */
down_write(&ubi->work_sem);
- up_write(&ubi->work_sem);
+ while (found) {
+ struct ubi_work *wrk;
+ found = 0;
- /*
- * And in case last was the WL worker and it canceled the LEB
- * movement, flush again.
- */
- while (ubi->works_count) {
- dbg_wl("flush more (%d pending works)", ubi->works_count);
- err = do_work(ubi);
- if (err)
- return err;
+ spin_lock(&ubi->wl_lock);
+ list_for_each_entry(wrk, &ubi->works, list) {
+ if ((vol_id == UBI_ALL || wrk->vol_id == vol_id) &&
+ (lnum == UBI_ALL || wrk->lnum == lnum)) {
+ list_del(&wrk->list);
+ ubi->works_count -= 1;
+ ubi_assert(ubi->works_count >= 0);
+ spin_unlock(&ubi->wl_lock);
+
+ err = wrk->func(ubi, wrk, 0);
+ if (err)
+ goto out;
+ spin_lock(&ubi->wl_lock);
+ found = 1;
+ break;
+ }
+ }
+ spin_unlock(&ubi->wl_lock);
}
- return 0;
+out:
+ up_write(&ubi->work_sem);
+ return err;
}
/**
@@ -1421,26 +1398,26 @@ static void cancel_pending(struct ubi_device *ubi)
}
/**
- * ubi_wl_init_scan - initialize the WL sub-system using scanning information.
+ * ubi_wl_init - initialize the WL sub-system using attaching information.
* @ubi: UBI device description object
- * @si: scanning information
+ * @ai: attaching information
*
* This function returns zero in case of success, and a negative error code in
* case of failure.
*/
-int ubi_wl_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
+int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
{
int err, i;
struct rb_node *rb1, *rb2;
- struct ubi_scan_volume *sv;
- struct ubi_scan_leb *seb, *tmp;
+ struct ubi_ainf_volume *av;
+ struct ubi_ainf_peb *aeb, *tmp;
struct ubi_wl_entry *e;
ubi->used = ubi->erroneous = ubi->free = ubi->scrub = RB_ROOT;
spin_lock_init(&ubi->wl_lock);
mutex_init(&ubi->move_mutex);
init_rwsem(&ubi->work_sem);
- ubi->max_ec = si->max_ec;
+ ubi->max_ec = ai->max_ec;
INIT_LIST_HEAD(&ubi->works);
sprintf(ubi->bgt_name, UBI_BGT_NAME_PATTERN, ubi->ubi_num);
@@ -1454,48 +1431,48 @@ int ubi_wl_init_scan(struct ubi_device *ubi, struct ubi_scan_info *si)
INIT_LIST_HEAD(&ubi->pq[i]);
ubi->pq_head = 0;
- list_for_each_entry_safe(seb, tmp, &si->erase, u.list) {
+ list_for_each_entry_safe(aeb, tmp, &ai->erase, u.list) {
cond_resched();
e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
if (!e)
goto out_free;
- e->pnum = seb->pnum;
- e->ec = seb->ec;
+ e->pnum = aeb->pnum;
+ e->ec = aeb->ec;
ubi->lookuptbl[e->pnum] = e;
- if (schedule_erase(ubi, e, 0)) {
+ if (schedule_erase(ubi, e, aeb->vol_id, aeb->lnum, 0)) {
kmem_cache_free(ubi_wl_entry_slab, e);
goto out_free;
}
}
- list_for_each_entry(seb, &si->free, u.list) {
+ list_for_each_entry(aeb, &ai->free, u.list) {
cond_resched();
e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
if (!e)
goto out_free;
- e->pnum = seb->pnum;
- e->ec = seb->ec;
+ e->pnum = aeb->pnum;
+ e->ec = aeb->ec;
ubi_assert(e->ec >= 0);
wl_tree_add(e, &ubi->free);
ubi->lookuptbl[e->pnum] = e;
}
- ubi_rb_for_each_entry(rb1, sv, &si->volumes, rb) {
- ubi_rb_for_each_entry(rb2, seb, &sv->root, u.rb) {
+ ubi_rb_for_each_entry(rb1, av, &ai->volumes, rb) {
+ ubi_rb_for_each_entry(rb2, aeb, &av->root, u.rb) {
cond_resched();
e = kmem_cache_alloc(ubi_wl_entry_slab, GFP_KERNEL);
if (!e)
goto out_free;
- e->pnum = seb->pnum;
- e->ec = seb->ec;
+ e->pnum = aeb->pnum;
+ e->ec = aeb->ec;
ubi->lookuptbl[e->pnum] = e;
- if (!seb->scrub) {
+ if (!aeb->scrub) {
dbg_wl("add PEB %d EC %d to the used tree",
e->pnum, e->ec);
wl_tree_add(e, &ubi->used);
@@ -1567,10 +1544,8 @@ void ubi_wl_close(struct ubi_device *ubi)
kfree(ubi->lookuptbl);
}
-#ifdef CONFIG_MTD_UBI_DEBUG
-
/**
- * paranoid_check_ec - make sure that the erase counter of a PEB is correct.
+ * self_check_ec - make sure that the erase counter of a PEB is correct.
* @ubi: UBI device description object
* @pnum: the physical eraseblock number to check
* @ec: the erase counter to check
@@ -1579,7 +1554,7 @@ void ubi_wl_close(struct ubi_device *ubi)
* is equivalent to @ec, and a negative error code if not or if an error
* occurred.
*/
-static int paranoid_check_ec(struct ubi_device *ubi, int pnum, int ec)
+static int self_check_ec(struct ubi_device *ubi, int pnum, int ec)
{
int err;
long long read_ec;
@@ -1601,9 +1576,9 @@ static int paranoid_check_ec(struct ubi_device *ubi, int pnum, int ec)
read_ec = be64_to_cpu(ec_hdr->ec);
if (ec != read_ec) {
- ubi_err("paranoid check failed for PEB %d", pnum);
+ ubi_err("self-check failed for PEB %d", pnum);
ubi_err("read EC is %lld, should be %d", read_ec, ec);
- ubi_dbg_dump_stack();
+ dump_stack();
err = 1;
} else
err = 0;
@@ -1614,7 +1589,7 @@ out_free:
}
/**
- * paranoid_check_in_wl_tree - check that wear-leveling entry is in WL RB-tree.
+ * self_check_in_wl_tree - check that wear-leveling entry is in WL RB-tree.
* @ubi: UBI device description object
* @e: the wear-leveling entry to check
* @root: the root of the tree
@@ -1622,9 +1597,8 @@ out_free:
* This function returns zero if @e is in the @root RB-tree and %-EINVAL if it
* is not.
*/
-static int paranoid_check_in_wl_tree(const struct ubi_device *ubi,
- struct ubi_wl_entry *e,
- struct rb_root *root)
+static int self_check_in_wl_tree(const struct ubi_device *ubi,
+ struct ubi_wl_entry *e, struct rb_root *root)
{
if (!ubi->dbg->chk_gen)
return 0;
@@ -1632,22 +1606,22 @@ static int paranoid_check_in_wl_tree(const struct ubi_device *ubi,
if (in_wl_tree(e, root))
return 0;
- ubi_err("paranoid check failed for PEB %d, EC %d, RB-tree %p ",
+ ubi_err("self-check failed for PEB %d, EC %d, RB-tree %p ",
e->pnum, e->ec, root);
- ubi_dbg_dump_stack();
+ dump_stack();
return -EINVAL;
}
/**
- * paranoid_check_in_pq - check if wear-leveling entry is in the protection
+ * self_check_in_pq - check if wear-leveling entry is in the protection
* queue.
* @ubi: UBI device description object
* @e: the wear-leveling entry to check
*
* This function returns zero if @e is in @ubi->pq and %-EINVAL if it is not.
*/
-static int paranoid_check_in_pq(const struct ubi_device *ubi,
- struct ubi_wl_entry *e)
+static int self_check_in_pq(const struct ubi_device *ubi,
+ struct ubi_wl_entry *e)
{
struct ubi_wl_entry *p;
int i;
@@ -1660,10 +1634,8 @@ static int paranoid_check_in_pq(const struct ubi_device *ubi,
if (p == e)
return 0;
- ubi_err("paranoid check failed for PEB %d, EC %d, Protect queue",
+ ubi_err("self-check failed for PEB %d, EC %d, Protect queue",
e->pnum, e->ec);
- ubi_dbg_dump_stack();
+ dump_stack();
return -EINVAL;
}
-
-#endif /* CONFIG_MTD_UBI_DEBUG */
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 13:51:06 +0000