#include <axisrfl/mtd.h>#include <axisrfl/mtd_nand.h>#include <axisrfl/nand_ecc.h>#include <axisrfl/funcs.h>#include <bitops.h>#include <hal_intr.h>#include <string.h>#include <axisrfl/linuxerr.h>Include dependency graph for nand_base.c:
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Defines | |
| #define | dprintf if(0)printf |
| #define | udelay(x) HAL_DELAY_US(x) |
| #define | nop() __asm__("nop") |
| #define | ndelay(x) |
| #define | GPIO_SYNC 0 |
| #define | DEBUG(n, args...) do { } while(0) |
| #define | D(x) x |
| #define | nand_verify_pages(...) (0) |
| #define | NOTALIGNED(x) (x & (mtd->oobblock-1)) != 0 |
| #define | BBT_PAGE_MASK 0xffffff3f |
Functions | |
| static void | nand_write_buf (struct mtd_info *mtd, const u_char *buf, int len) |
| static void | nand_read_buf (struct mtd_info *mtd, u_char *buf, int len) |
| static int | nand_verify_buf (struct mtd_info *mtd, const u_char *buf, int len) |
| static int | nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) |
| static int | nand_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, u_char *eccbuf, struct nand_oobinfo *oobsel) |
| static int | nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) |
| static int | nand_get_device (struct nand_chip *this, struct mtd_info *mtd, int new_state) |
| static void | nand_release_device (struct mtd_info *mtd) |
| static u_char | nand_read_byte (struct mtd_info *mtd) |
| static void | nand_write_byte (struct mtd_info *mtd, u_char byte) |
| static u16 | nand_read_word (struct mtd_info *mtd) |
| static void | nand_write_word (struct mtd_info *mtd, u16 word) |
| static void | nand_select_chip (struct mtd_info *mtd, int chip) |
| static int | nand_block_bad (struct mtd_info *mtd, loff_t ofs, int getchip) |
| static int | nand_block_checkbad (struct mtd_info *mtd, loff_t ofs, int getchip, int allowbbt) |
| static void | nand_wait_ready (struct mtd_info *mtd) |
| char * | command_str (unsigned cmd) |
| static void | nand_command (struct mtd_info *mtd, unsigned command, int column, int page_addr) |
| static void | nand_command_lp (struct mtd_info *mtd, unsigned command, int column, int page_addr) |
| static int | nand_wait (struct mtd_info *mtd, struct nand_chip *this, int state) |
| int | nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, u_char *oob_buf, struct nand_oobinfo *oobsel, int flags) |
| int | nand_read_raw (struct mtd_info *mtd, uint8_t *buf, loff_t from, size_t len, size_t ooblen) |
| static int | nand_block_isbad (struct mtd_info *mtd, loff_t ofs) |
| int | nand_scan (struct mtd_info *mtd, int maxchips) |
Variables | |
| static struct nand_oobinfo | nand_oob_8 |
| static struct nand_oobinfo | nand_oob_16 |
| static struct nand_oobinfo | nand_oob_64 |
| #define BBT_PAGE_MASK 0xffffff3f |
nand_erase - [MTD Interface] erase block(s) : MTD device structure : erase instruction
Erase one ore more blocks
Definition at line 2288 of file nand_base.c.
Definition at line 125 of file nand_base.c.
| #define DEBUG | ( | n, | |||
| args... | ) | do { } while(0) |
Definition at line 123 of file nand_base.c.
| #define dprintf if(0)printf |
Definition at line 74 of file nand_base.c.
| #define GPIO_SYNC 0 |
Definition at line 120 of file nand_base.c.
| #define nand_verify_pages | ( | ... | ) | (0) |
| #define ndelay | ( | x | ) |
| #define nop | ( | ) | __asm__("nop") |
Definition at line 115 of file nand_base.c.
nand_prepare_oobbuf - [GENERIC] Prepare the out of band buffer : MTD device structure : buffer given by fs driver : out of band selection structre : 1 = place given buffer into the oob bytes : number of pages to prepare
Return: 1. Filesystem buffer available and autoplacement is off, return filesystem buffer 2. No filesystem buffer or autoplace is off, return internal buffer 3. Filesystem buffer is given and autoplace selected put data from fs buffer into internal buffer and retrun internal buffer
Note: The internal buffer is filled with 0xff. This must be done only once, when no autoplacement happens Autoplacement sets the buffer dirty flag, which forces the 0xff fill before using the buffer again.
Definition at line 1759 of file nand_base.c.
Definition at line 113 of file nand_base.c.
| char* command_str | ( | unsigned | cmd | ) |
| static int nand_block_bad | ( | struct mtd_info * | mtd, | |
| loff_t | ofs, | |||
| int | getchip | |||
| ) | [static] |
nand_block_bad - [DEFAULT] Read bad block marker from the chip : MTD device structure : offset from device start : 0, if the chip is already selected
Check, if the block is bad.
Definition at line 502 of file nand_base.c.
References nand_chip::cmdfunc, cpu_to_le16, dprintf, FL_READING, mtd_info::ignore_bad, int, NAND_BUSWIDTH_16, NAND_CMD_READOOB, nand_get_device(), nand_release_device(), mtd_info::priv, and nand_chip::select_chip.
| static int nand_block_checkbad | ( | struct mtd_info * | mtd, | |
| loff_t | ofs, | |||
| int | getchip, | |||
| int | allowbbt | |||
| ) | [static] |
nand_block_checkbad - [GENERIC] Check if a block is marked bad : MTD device structure : offset from device start : 0, if the chip is already selected : 1, if its allowed to access the bbt area
Check, if the block is bad. Either by reading the bad block table or calling of the scan function.
Definition at line 616 of file nand_base.c.
References nand_chip::block_bad, BUG, D, dprintf, nand_isbad_bbt(), printk, and mtd_info::priv.
| static int nand_block_isbad | ( | struct mtd_info * | mtd, | |
| loff_t | ofs | |||
| ) | [static] |
nand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad : MTD device structure : offset relative to mtd start
Definition at line 2506 of file nand_base.c.
References dprintf, nand_block_checkbad(), and mtd_info::size.
| static void nand_command | ( | struct mtd_info * | mtd, | |
| unsigned | command, | |||
| int | column, | |||
| int | page_addr | |||
| ) | [static] |
nand_command - [DEFAULT] Send command to NAND device : MTD device structure : the command to be sent : the column address for this command, -1 if none : the page address for this command, -1 if none
Send command to NAND device. This function is used for small page devices (256/512 Bytes per page)
Definition at line 684 of file nand_base.c.
References command_str(), dprintf, nand_chip::hwcontrol, NAND_BUSWIDTH_16, NAND_CMD_ERASE1, NAND_CMD_ERASE2, NAND_CMD_PAGEPROG, NAND_CMD_READ0, NAND_CMD_READ1, NAND_CMD_READOOB, NAND_CMD_RESET, NAND_CMD_SEQIN, NAND_CMD_STATUS, NAND_CTL_CLRALE, NAND_CTL_CLRCLE, NAND_CTL_SETALE, NAND_CTL_SETCLE, NAND_STATUS_READY, nand_wait_ready(), ndelay, mtd_info::oobblock, mtd_info::priv, udelay, and nand_chip::write_byte.
| static void nand_command_lp | ( | struct mtd_info * | mtd, | |
| unsigned | command, | |||
| int | column, | |||
| int | page_addr | |||
| ) | [static] |
nand_command_lp - [DEFAULT] Send command to NAND large page device : MTD device structure : the command to be sent : the column address for this command, -1 if none : the page address for this command, -1 if none
Send command to NAND device. This is the version for the new large page devices We dont have the seperate regions as we have in the small page devices. We must emulate NAND_CMD_READOOB to keep the code compatible.
Definition at line 794 of file nand_base.c.
References nand_chip::hwcontrol, NAND_BUSWIDTH_16, NAND_CMD_CACHEDPROG, NAND_CMD_DEPLETE1, NAND_CMD_ERASE1, NAND_CMD_ERASE2, NAND_CMD_PAGEPROG, NAND_CMD_READ0, NAND_CMD_READOOB, NAND_CMD_READSTART, NAND_CMD_RESET, NAND_CMD_SEQIN, NAND_CMD_STATUS, NAND_CMD_STATUS_ERROR, NAND_CMD_STATUS_ERROR0, NAND_CMD_STATUS_ERROR1, NAND_CMD_STATUS_ERROR2, NAND_CMD_STATUS_ERROR3, NAND_CTL_CLRALE, NAND_CTL_CLRCLE, NAND_CTL_SETALE, NAND_CTL_SETCLE, NAND_STATUS_READY, nand_wait_ready(), ndelay, mtd_info::oobblock, mtd_info::priv, udelay, and nand_chip::write_byte.
| int nand_do_read_ecc | ( | struct mtd_info * | mtd, | |
| loff_t | from, | |||
| size_t | len, | |||
| size_t * | retlen, | |||
| u_char * | buf, | |||
| u_char * | oob_buf, | |||
| struct nand_oobinfo * | oobsel, | |||
| int | flags | |||
| ) |
nand_do_read_ecc - [MTD Interface] Read data with ECC : MTD device structure : offset to read from : number of bytes to read : pointer to variable to store the number of read bytes : the databuffer to put data : filesystem supplied oob data buffer (can be NULL) : oob selection structure : flag to indicate if nand_get_device/nand_release_device should be preformed and how many corrected error bits are acceptable: bits 0..7 - number of tolerable errors bit 8 - 0 == do not get/release chip, 1 == get/release chip
NAND read with ECC
Definition at line 1284 of file nand_base.c.
References nand_chip::autooob, nand_chip::calculate_ecc, nand_chip::cmdfunc, nand_chip::correct_data, D, data_buf, nand_chip::data_poi, DEBUG, nand_chip::ecc, nand_oobinfo::eccbytes, nand_chip::eccbytes, nand_chip::eccmode, nand_oobinfo::eccpos, nand_chip::eccsize, nand_chip::eccsteps, nand_chip::enable_hwecc, FL_READING, HZ, jiffies, memcpy(), MTD_DEBUG_LEVEL0, MTD_DEBUG_LEVEL3, MTD_NANDECC_AUTOPL_USR, MTD_NANDECC_AUTOPLACE, MTD_NANDECC_PLACE, NAND_CANAUTOINCR, NAND_CMD_READ0, NAND_ECC_NONE, NAND_ECC_READ, NAND_ECC_READSYN, NAND_ECC_SOFT, nand_get_device(), NAND_GET_DEVICE, NAND_HWECC_SYNDROME, nand_release_device(), nand_wait_ready(), num, mtd_info::oobblock, nand_oobinfo::oobfree, mtd_info::oobsize, nand_chip::page_shift, nand_chip::pagebuf, nand_chip::pagemask, nand_chip::phys_erase_shift, printk, mtd_info::priv, read, nand_chip::read_buf, nand_chip::select_chip, mtd_info::size, udelay, and nand_oobinfo::useecc.
Referenced by nand_read(), and nand_read_ecc().
| static int nand_get_device | ( | struct nand_chip * | this, | |
| struct mtd_info * | mtd, | |||
| int | new_state | |||
| ) | [static] |
nand_get_device - [GENERIC] Get chip for selected access : the nand chip descriptor : MTD device structure : the state which is requested
Get the device and lock it for exclusive access
Definition at line 906 of file nand_base.c.
References nand_hw_control::active, add_wait_queue, nand_chip::chip_lock, nand_chip::controller, DECLARE_WAITQUEUE, FL_PM_SUSPENDED, FL_READY, nand_hw_control::lock, remove_wait_queue, schedule, set_current_state, spin_lock, spin_unlock, spinlock_t, nand_chip::state, state, TASK_UNINTERRUPTIBLE, wait_queue_head_t, nand_hw_control::wq, and nand_chip::wq.
| static int nand_read | ( | struct mtd_info * | mtd, | |
| loff_t | from, | |||
| size_t | len, | |||
| size_t * | retlen, | |||
| u_char * | buf | |||
| ) | [static] |
nand_read - [MTD Interface] MTD compability function for nand_do_read_ecc : MTD device structure : offset to read from : number of bytes to read : pointer to variable to store the number of read bytes : the databuffer to put data
This function simply calls nand_do_read_ecc with oob buffer and oobsel = NULL and flags = 0xff
Definition at line 1240 of file nand_base.c.
References nand_do_read_ecc(), and mtd_info::oobinfo.
| static void nand_read_buf | ( | struct mtd_info * | mtd, | |
| u_char * | buf, | |||
| int | len | |||
| ) | [static] |
nand_read_buf - [DEFAULT] read chip data into buffer : MTD device structure : buffer to store date : number of bytes to read
Default read function for 8bit buswith
Definition at line 396 of file nand_base.c.
References dprintf, mtd_info::priv, and readb().
| static u_char nand_read_byte | ( | struct mtd_info * | mtd | ) | [static] |
nand_read_byte - [DEFAULT] read one byte from the chip : MTD device structure
Default read function for 8bit buswith
Definition at line 250 of file nand_base.c.
References dprintf, mtd_info::priv, and readb().
| static int nand_read_ecc | ( | struct mtd_info * | mtd, | |
| loff_t | from, | |||
| size_t | len, | |||
| size_t * | retlen, | |||
| u_char * | buf, | |||
| u_char * | oob_buf, | |||
| struct nand_oobinfo * | oobsel | |||
| ) | [static] |
nand_read_ecc - [MTD Interface] MTD compability function for nand_do_read_ecc : MTD device structure : offset to read from : number of bytes to read : pointer to variable to store the number of read bytes : the databuffer to put data : filesystem supplied oob data buffer : oob selection structure
This function simply calls nand_do_read_ecc with flags = 0xff
Definition at line 1258 of file nand_base.c.
References nand_do_read_ecc(), and mtd_info::oobinfo.
| static int nand_read_oob | ( | struct mtd_info * | mtd, | |
| loff_t | from, | |||
| size_t | len, | |||
| size_t * | retlen, | |||
| u_char * | buf | |||
| ) | [static] |
nand_read_oob - [MTD Interface] NAND read out-of-band : MTD device structure : offset to read from : number of bytes to read : pointer to variable to store the number of read bytes : the databuffer to put data
NAND read out-of-band data from the spare area
Definition at line 1550 of file nand_base.c.
References nand_chip::chip_delay, nand_chip::chip_shift, nand_chip::cmdfunc, DEBUG, nand_chip::dev_ready, FL_READING, min_t, MTD_DEBUG_LEVEL0, MTD_DEBUG_LEVEL3, NAND_CANAUTOINCR, NAND_CMD_READOOB, nand_get_device(), nand_release_device(), nand_wait_ready(), mtd_info::oobsize, nand_chip::page_shift, nand_chip::pagemask, nand_chip::phys_erase_shift, mtd_info::priv, nand_chip::read_buf, nand_chip::select_chip, mtd_info::size, and udelay.
| int nand_read_raw | ( | struct mtd_info * | mtd, | |
| uint8_t * | buf, | |||
| loff_t | from, | |||
| size_t | len, | |||
| size_t | ooblen | |||
| ) |
nand_read_raw - [GENERIC] Read raw data including oob into buffer : MTD device structure : temporary buffer : offset to read from : number of bytes to read : number of oob data bytes to read
Read raw data including oob into buffer
Definition at line 1644 of file nand_base.c.
References nand_chip::chip_delay, nand_chip::chip_shift, nand_chip::cmdfunc, DEBUG, nand_chip::dev_ready, dprintf, FL_READING, int, MTD_DEBUG_LEVEL0, NAND_CANAUTOINCR, NAND_CMD_READ0, nand_get_device(), nand_release_device(), nand_wait_ready(), mtd_info::oobblock, mtd_info::oobsize, nand_chip::page_shift, nand_chip::pagemask, nand_chip::phys_erase_shift, mtd_info::priv, nand_chip::read_buf, nand_chip::select_chip, mtd_info::size, and udelay.
Referenced by read_abs_bbts(), and search_bbt().
nand_read_word - [DEFAULT] read one word from the chip : MTD device structure
Default read function for 16bit buswith without endianess conversion
Definition at line 323 of file nand_base.c.
References mtd_info::priv, and readw().
| static void nand_release_device | ( | struct mtd_info * | mtd | ) | [static] |
nand_release_device - [GENERIC] release chip : MTD device structure
Deselect, release chip lock and wake up anyone waiting on the device
Definition at line 219 of file nand_base.c.
References nand_hw_control::active, nand_chip::controller, FL_READY, mtd_info::priv, nand_chip::select_chip, spin_lock, spin_unlock, state, and wake_up.
| int nand_scan | ( | struct mtd_info * | mtd, | |
| int | maxchips | |||
| ) |
nand_scan - [NAND Interface] Scan for the NAND device : MTD device structure : Number of chips to scan for
This fills out all the not initialized function pointers with the defaults. The flash ID is read and the mtd/chip structures are filled with the appropriate values. Buffers are allocated if they are not provided by the board driver
Definition at line 2584 of file nand_base.c.
References nand_chip::autooob, nand_chip::badblockpos, nand_chip::bbt_erase_shift, nand_chip::block_bad, nand_chip::block_markbad, BUG, nand_chip::calculate_ecc, caller_is_module, nand_chip::chip_delay, nand_chip::chip_shift, nand_flash_dev::chipsize, nand_chip::chipsize, nand_chip::cmdfunc, nand_chip::correct_data, D, data_buf, nand_chip::data_buf, dprintf, nand_chip::eccbytes, nand_chip::eccmode, nand_chip::eccsize, nand_chip::erase_cmd, nand_flash_dev::erasesize, mtd_info::erasesize, free(), nand_manufacturers::id, malloc(), memset(), multi_erase_cmd(), name, mtd_info::name, nand_flash_dev::name, NAND_4PAGE_ARRAY, nand_block_bad(), NAND_BUSWIDTH_16, nand_calculate_ecc(), NAND_CHIPOPTIONS_MSK, NAND_CMD_READID, nand_command(), nand_command_lp(), nand_correct_data(), NAND_DATABUF_ALLOC, nand_default_bbt(), nand_default_block_markbad, NAND_ECC_HW12_2048, NAND_ECC_SOFT, nand_flash_ids, NAND_HWECC_SUPPORT, NAND_LARGE_BADBLOCK_POS, nand_manuf_ids, NAND_MFR_SAMSUNG, NAND_NO_AUTOINCR, nand_oob_16, nand_oob_64, nand_oob_8, NAND_OOBBUF_ALLOC, nand_read_buf(), nand_read_buf16(), nand_read_byte(), nand_read_byte16(), nand_read_word(), NAND_SAMSUNG_LP_OPTIONS, nand_scan_ident(), nand_scan_tail(), nand_select_chip(), NAND_SMALL_BADBLOCK_POS, nand_verify_buf(), nand_verify_buf16(), nand_wait(), nand_write_buf(), nand_write_buf16(), nand_write_byte(), nand_write_byte16(), nand_write_word(), nand_chip::numchips, nand_chip::oob_buf, mtd_info::oobavail, mtd_info::oobblock, nand_oobinfo::oobfree, mtd_info::oobsize, nand_flash_dev::options, nand_chip::options, mtd_info::owner, nand_chip::page_shift, nand_flash_dev::pagesize, nand_chip::phys_erase_shift, printk, mtd_info::priv, nand_chip::read_buf, nand_chip::read_byte, nand_chip::read_word, nand_chip::scan_bbt, nand_chip::select_chip, single_erase_cmd(), mtd_info::size, nand_chip::verify_buf, nand_chip::waitfunc, nand_chip::write_buf, nand_chip::write_byte, and nand_chip::write_word.
| static void nand_select_chip | ( | struct mtd_info * | mtd, | |
| int | chip | |||
| ) | [static] |
nand_select_chip - [DEFAULT] control CE line : MTD device structure : chipnumber to select, -1 for deselect
Default select function for 1 chip devices.
Definition at line 350 of file nand_base.c.
References BUG, D, nand_chip::hwcontrol, NAND_CTL_CLRNCE, NAND_CTL_SETNCE, printk, and mtd_info::priv.
| static int nand_verify_buf | ( | struct mtd_info * | mtd, | |
| const u_char * | buf, | |||
| int | len | |||
| ) | [static] |
nand_verify_buf - [DEFAULT] Verify chip data against buffer : MTD device structure : buffer containing the data to compare : number of bytes to compare
Default verify function for 8bit buswith
Definition at line 415 of file nand_base.c.
References mtd_info::priv, and readb().
nand_wait - [DEFAULT] wait until the command is done : MTD device structure : NAND chip structure : state to select the max. timeout value
Wait for command done. This applies to erase and program only Erase can take up to 400ms and program up to 20ms according to general NAND and SmartMedia specs
Definition at line 958 of file nand_base.c.
References nand_chip::calculate_ecc, nand_chip::chip_delay, nand_chip::cmdfunc, cond_resched, D, nand_chip::data_poi, DEBUG, nand_chip::dev_ready, dprintf, nand_oobinfo::eccbytes, nand_chip::eccbytes, nand_chip::eccmode, nand_oobinfo::eccpos, nand_chip::eccsize, nand_chip::eccsteps, nand_chip::enable_hwecc, nand_chip::errstat, FL_ERASING, FL_WRITING, HZ, int, jiffies, MTD_DEBUG_LEVEL0, MTD_NANDECC_OFF, NAND_CANAUTOINCR, NAND_CMD_CACHEDPROG, NAND_CMD_PAGEPROG, NAND_CMD_READ0, NAND_CMD_RESET, NAND_CMD_SEQIN, NAND_CMD_STATUS, NAND_CMD_STATUS_MULTI, NAND_ECC_NONE, NAND_ECC_SOFT, NAND_ECC_WRITE, NAND_HWECC_SYNDROME, NAND_IS_AND, NAND_STATUS_FAIL, NAND_STATUS_READY, nand_verify_pages, nand_wait_ready(), nand_write_page(), ndelay, nand_chip::oob_buf, oob_buf, mtd_info::oobblock, mtd_info::oobsize, nand_chip::options, printk, nand_chip::read_buf, nand_chip::read_byte, nand_chip::state, time_before, udelay, nand_oobinfo::useecc, nand_chip::verify_buf, nand_chip::waitfunc, and nand_chip::write_buf.
| static void nand_wait_ready | ( | struct mtd_info * | mtd | ) | [static] |
| static void nand_write_buf | ( | struct mtd_info * | mtd, | |
| const u_char * | buf, | |||
| int | len | |||
| ) | [static] |
nand_write_buf - [DEFAULT] write buffer to chip : MTD device structure : data buffer : number of bytes to write
Default write function for 8bit buswith
Definition at line 375 of file nand_base.c.
References dprintf, mtd_info::priv, and writeb().
| static void nand_write_byte | ( | struct mtd_info * | mtd, | |
| u_char | byte | |||
| ) | [static] |
nand_write_byte - [DEFAULT] write one byte to the chip : MTD device structure : pointer to data byte to write
Default write function for 8-bit buswidth
Definition at line 266 of file nand_base.c.
References dprintf, mtd_info::priv, readb(), void(), and writeb().
nand_write_word - [DEFAULT] write one word to the chip : MTD device structure : data word to write
Default write function for 16bit buswith without endianess conversion
Definition at line 337 of file nand_base.c.
References mtd_info::priv, and writew().
struct nand_oobinfo nand_oob_16 [static] |
Initial value:
{
.useecc = MTD_NANDECC_AUTOPLACE,
.eccbytes = 6,
.eccpos = {0, 1, 2, 3, 6, 7},
.oobfree = { {8, 8} }
}
Definition at line 135 of file nand_base.c.
struct nand_oobinfo nand_oob_64 [static] |
Initial value:
{
.useecc = MTD_NANDECC_AUTOPLACE,
.eccbytes = 24,
.eccpos = {
40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63},
.oobfree = { {2, 38} }
}
Definition at line 142 of file nand_base.c.
struct nand_oobinfo nand_oob_8 [static] |
Initial value:
{
.useecc = MTD_NANDECC_AUTOPLACE,
.eccbytes = 3,
.eccpos = {0, 1, 2},
.oobfree = { {3, 2}, {6, 2} }
}
Definition at line 128 of file nand_base.c.
1.5.1