* Write error on the nand flash !
@ 2002-12-03 22:09 shadow
2002-12-04 10:37 ` Thomas Gleixner
0 siblings, 1 reply; 6+ messages in thread
From: shadow @ 2002-12-03 22:09 UTC (permalink / raw)
To: linux-mtd
Hi all,
If I copy the larger file to nand flash, the system will tell me some
wrong ? These is my error log..
After mount partition, it printed.
---------
/root> mount -t jffs2 /dev/mtdblock/6 /home
mtdblock_open
ok
jffs2: read_super for device 1f:06
erasesize is 8192 bytes
sector_size is 8192 bytes
c->wbuf_pagesize(mtd->oobblock) is 512 bytes
Allocating readbuf of 8192 bytes
jffs2_scan_eraseblock(): Scanning block at 0x0
(nand_cleanmarker)offset is 0x0
(nand_cleanmarker)oob_size is 16 byte
(nand_cleanmarker) sector_size is 8192 bytes
(nand_cleanmarker) erasesize is 8192 bytes
nand_read_oob: from = 0x00000000, len = 32
jffs2_check_nand_cleanmarker(): Bad block at 00000000
jffs_check_nand_cleanmarker returned 2
JFFS2: Block at 0x00000000 is bad
jffs2_scan_eraseblock(): Scanning block at 0x2000
(nand_cleanmarker)offset is 0x2000
(nand_cleanmarker)oob_size is 16 byte
(nand_cleanmarker) sector_size is 8192 bytes
(nand_cleanmarker) erasesize is 8192 bytes
nand_read_oob: from = 0x00002000, len = 32
jffs_check_nand_cleanmarker returned 0
nand_read_ecc: from = 0x00002000, len = 1024
Read 0x400 bytes from 0x00002000 into buf
000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
nand_read_oob: from = 0x00002000, len = 64
jffs2_check_oob_empty returned 0
jffs2_scan_eraseblock(): Scanning block at 0x4000
(nand_cleanmarker)offset is 0x4000
(nand_cleanmarker)oob_size is 16 byte
(nand_cleanmarker) sector_size is 8192 bytes
(nand_cleanmarker) erasesize is 8192 bytes
nand_read_oob: from = 0x00004000, len = 32
jffs_check_nand_cleanmarker returned 0
nand_read_ecc: from = 0x00004000, len = 1024
Read 0x400 bytes from 0x00004000 into buf
000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
nand_read_oob: from = 0x00004000, len = 64
jffs2_check_oob_empty returned 0
jffs2_scan_eraseblock(): Scanning block at 0x6000
(nand_cleanmarker)offset is 0x6000
(nand_cleanmarker)oob_size is 16 byte
(nand_cleanmarker) sector_size is 8192 bytes
(nand_cleanmarker) erasesize is 8192 bytes
nand_read_oob: from = 0x00006000, len = 32
jffs_check_nand_cleanmarker returned 0
nand_read_ecc: from = 0x00006000, len = 1024
Read 0x400 bytes from 0x00006000 into buf
000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
nand_read_oob: from = 0x00006000, len = 64
jffs2_check_oob_empty returned 0
jffs2_scan_eraseblock(): Scanning block at 0x8000
(nand_cleanmarker)offset is 0x8000
(nand_cleanmarker)oob_size is 16 byte
(nand_cleanmarker) sector_size is 8192 bytes
(nand_cleanmarker) erasesize is 8192 bytes
nand_read_oob: from = 0x00008000, len = 32
jffs_check_nand_cleanmarker returned 0
nand_read_ecc: from = 0x00008000, len = 1024
Read 0x400 bytes from 0x00008000 into buf
000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
snip-----------------------------------
free_list: 00004000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
free_list: 00002000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
bad_list: 00000000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
bad_used_list: empty
Not rotating empty clean_list
Not rotating empty very_dirty_list
Not rotating empty dirty_list
Not rotating empty erasable_list
Not rotating empty erase_pending_list
Rotating free_list by 0
Erase block at front of free_list is at 001fc000
jffs2_do_fill_super(): Getting root inode
jffs2_read_inode(): inode->i_ino == 1
jffs2_do_read_inode(): getting inocache
jffs2_get_ino_cache(): ino 1
jffs2_get_ino_cache found 00000000 for ino 1
jffs2_do_read_inode(): Got inocache at 00000000
Allocated inocache at c0e2b260
jffs2_do_read_inode(): Creating inocache for root inode
jffs2_add_ino_cache: Add c0e2b260 (ino #1)
jffs2_do_read_inode(): ino #1 nlink is 1
jffs2_get_inode_nodes(): ino #1
jffs2_read_inode() returning
jffs2_do_fill_super(): d_alloc_root()
thread_should_wake(): nr_free_blocks 255, nr_erasing_blocks 0, dirty_size
0x0: no
jffs2_garbage_collect_thread sleeping...
JFFS2: Garbage collect thread is pid 51
================================================
After executed df, it printed.
===============================================
/root> df
Filesystem 1k-blocks Used Available Use% Mounted on
jffs2_dump_block_lists:
flash_size: 00200000
used_size: 00000000
dirty_size: 00000000
wasted_size: 00000000
unchecked_size: 00000000
free_size: 001fe000
erasing_size: 00000000
bad_size: 00002000
sector_size: 00002000
jffs2_reserved_blocks size: 0000a000
nextblock: NULL
gcblock: NULL
clean_list: empty
very_dirty_list: empty
dirty_list: empty
erasable_list: empty
erasing_list: empty
erase_pending_list: empty
erasable_pending_wbuf_list: empty
free_list: 001fc000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
free_list: 001fa000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
free_list: 001f8000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
free_list: 001f6000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
free_list: 001f4000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
free_list: 001f2000 (used 00000000, dirty 00000000, wasted 00000000,
unchecked 00000000, free 00002000)
snip------------------------------
=====================================
After executed cp, it printed.
=====================================
/root>ls -al /etc/fstab
mtdblock: read on "root_fs" at 0xfe000, size 0x1000
mtdblock: read on "root_fs" at 0xff000, size 0x1000
-rwxr--r-- 1 root root 211 Jan 1 00:00 /etc/fstab
/root>cp /etc/fstab /home
jffs2_lookup()
jffs2_create()
jffs2_new_inode(): dir_i 1, mode 0x81e4
Allocated inocache at c0e2b278
jffs2_do_new_inode(): Assigned ino# 2
jffs2_add_ino_cache: Add c0e2b278 (ino #2)
blocksneeded is 5 blocks
minsize is 68 bytes
jffs2_reserve_space(): Requested 0x44 bytes
jffs2_reserve_space(): alloc sem got
(nodemgmt)offset is 0x1fc000
jffs2_do_reserve_space(): Giving 0x2000 bytes at 0x1fc000
jffs2_do_create(): reserved 0x2000 bytes
datalen is 0
flash_ofs is 1fc000
nand_read_ecc: from = 0x001fc000, len = 16
datalen is 0
flash_ofs is 1fc000
cnt is 1
jffs2_flash_writev: mod wbuf_timer
retlen is 44
jffs2_add_physical_node_ref(): Node at 0x1fc000, size 0x44
jffs2_write_dnode wrote node at 0x001fc000 with dsize 0x0, csize 0x0,
node_crc 0xc23ec532, data_crc 0x00000000,
totlen 0x00000044
jffs2_do_create created file with mode 0x81e4
jffs2_write_dirent(ino #1, name at *0xc0b0991c "fstab"->ino #2, name_crc
0xe35a1781)
nand_read_ecc: from = 0x001fc044, len = 16
jffs2_flash_writev: mod wbuf_timer
jffs2_add_physical_node_ref(): Node at 0x1fc044, size 0x30
jffs2_add_fd_to_list( c01cacc0, c0b08cc0 (->00000000))
Dirent "fstab" (hash 0x117ee576, ino #2
jffs2_complete_reservation()
thread_should_wake(): nr_free_blocks 254, nr_erasing_blocks 0, dirty_size
0x0: no
jffs2_create: Created ino #2 with mode 100744, nlink 1(1). nrpages 0
jffs2_prepare_write()
jffs2_do_readpage_nolock(): ino #2, page at offset 0x0
jffs2_read_inode_range: ino #2, range 0x00000000-0x00001000
jffs2_lookup_node_frag(c0aeb738, 0)
Returning NULL, empty fragtree
jffs2_read_inode_range: offset 0, end 4096
Filling non-frag hole from 0-4096
readpage finished
end prepare_write(). pg->flags 2049
jffs2_commit_write(): ino #2, page at 0x0, range 0-211, flags 2049
jffs2_write_inode_range(): Ino #2, ofs 0x0, len 0xd3
jffs2_commit_write() loop: 0xd3 to write to 0x0
blocksneeded is 5 blocks
minsize is 196 bytes
jffs2_reserve_space(): Requested 0xc4 bytes
jffs2_reserve_space(): alloc sem got
(nodemgmt)offset is 0x1fc000
jffs2_do_reserve_space(): Giving 0x1f8c bytes at 0x1fc074
calling deflate with avail_in 199, avail_out 199
deflate returned with avail_in 0, avail_out 74, total_in 199, total_out
125
calling deflate with avail_in 12, avail_out 74
deflate returned with avail_in 0, avail_out 64, total_in 211, total_out
135
zlib compressed 211 bytes into 142
datalen is 8e
flash_ofs is 1fc074
nand_read_ecc: from = 0x001fc074, len = 16
datalen is 8e
flash_ofs is 1fc074
cnt is 2
jffs2_flash_writev: mod wbuf_timer
retlen is d2
jffs2_add_physical_node_ref(): Node at 0x1fc074, size 0xd4
jffs2_write_dnode wrote node at 0x001fc074 with dsize 0xd3, csize 0x8e,
node_crc 0xd3a1b5f3, data_crc 0x38c7ea68
, totlen 0x000000d2
jffs2_add_full_dnode_to_inode(ino #2, f c0aeb720, fn c0ad6350)
adding node 0000-00d3 @0x001fc074 on flash, newfrag *c0ae2220
jffs2_lookup_node_frag(c0aeb738, 0)
Returning NULL, empty fragtree
j_a_f_d_t_f: Lookup gave no frag
Adding new frag (c0ae2220) at root of tree
frag 0000-00d3: 0x001fc074(3) on flash (*c0ae2220). left (00000000), right
(00000000), parent (00000000)
metadata at 0x001fc000
Obsoleting node at 0x001fc000 of len 44: Wasting
Not moving nextblock 0x001fc000 to dirty/erase_pending list
jffs2_complete_reservation()
thread_should_wake(): nr_free_blocks 254, nr_erasing_blocks 0, dirty_size
0x0: no
increasing writtenlen by 211
jffs2_commit_write() returning 211
/root>jffs2_wbuf_timeout(): timer expired
jffs2_wbuf_process() entered
jffs2_wbuf_process() alloc_sem got
nand_write_ecc: to = 0x001fc000, len = 512
nand_write_page: Failed write verify, page 0x00000fe0
<2>jffs2_flush_wbuf(): Write failed with -5
=================================
then ls copied file(fstab)
=================================
/root>ls -al /home/fstab
-rwxr--r-- 1 root root 211 Jan 1 00:35 /home/fstab
/root>
================================
Yes, I got it. It was copied.
Next test, I will copy a larger file.
===============================
/root> ls -al /bin/erase
-rwxr-xr-x 1 root root 13530 Jan 1 00:00 /bin/erase
/root>cp /bin/erase /home
jffs2_lookup()
jffs2_create()
jffs2_new_inode(): dir_i 1, mode 0x81ed
Allocated inocache at c0e2b290
jffs2_do_new_inode(): Assigned ino# 3
jffs2_add_ino_cache: Add c0e2b290 (ino #3)
blocksneeded is 5 blocks
minsize is 68 bytes
jffs2_reserve_space(): Requested 0x44 bytes
jffs2_reserve_space(): alloc sem got
(nodemgmt)offset is 0x1fc000
jffs2_do_reserve_space(): Giving 0x1eb8 bytes at 0x1fc148
jffs2_do_create(): reserved 0x1eb8 bytes
datalen is 0
flash_ofs is 1fc148
nand_read_ecc: from = 0x001fc148, len = 16
ARGH. About to write node to 0x001fc148 on flash, but there are data
already there:
0x001fc148: 85 19 04 20 b8 00 00 00 c4 59 0b 6b ff ff ff ff
datalen is 0
flash_ofs is 1fc148
cnt is 1
jffs2_flash_writev: mod wbuf_timer
retlen is 44
jffs2_add_physical_node_ref(): Node at 0x1fc148, size 0x44
jffs2_write_dnode wrote node at 0x001fc148 with dsize 0x0, csize 0x0,
node_crc 0x8717fff9, data_crc 0x00000000,
totlen 0x00000044
jffs2_do_create created file with mode 0x81ed
jffs2_write_dirent(ino #1, name at *0xc0b0999c "erase"->ino #3, name_crc
0xe03b8edf)
nand_read_ecc: from = 0x001fc18c, len = 16
jffs2_flash_writev: mod wbuf_timer
jffs2_add_physical_node_ref(): Node at 0x1fc18c, size 0x30
jffs2_add_fd_to_list( c01cace0, c0b08cc0 (->c01cacc0))
Dirent "erase" (hash 0x114e599c, ino #3
Dirent "fstab" (hash 0x117ee576, ino #2
jffs2_complete_reservation()
thread_should_wake(): nr_free_blocks 254, nr_erasing_blocks 0, dirty_size
0x0: no
jffs2_create: Created ino #3 with mode 100755, nlink 1(1). nrpages 0
mtdblock: read on "root_fs" at 0x163000, size 0x1000
mtdblock: read on "root_fs" at 0x164000, size 0x1000
jffs2_prepare_write()
end prepare_write(). pg->flags 41
jffs2_commit_write(): ino #3, page at 0x0, range 0-4096, flags 2041
jffs2_write_inode_range(): Ino #3, ofs 0x0, len 0x1000
jffs2_commit_write() loop: 0x1000 to write to 0x0
blocksneeded is 5 blocks
minsize is 196 bytes
jffs2_reserve_space(): Requested 0xc4 bytes
jffs2_reserve_space(): alloc sem got
(nodemgmt)offset is 0x1fc000
jffs2_do_reserve_space(): Giving 0x1e44 bytes at 0x1fc1bc
calling deflate with avail_in 4084, avail_out 4084
deflate returned with avail_in 0, avail_out 1922, total_in 4084, total_out
2162
calling deflate with avail_in 12, avail_out 1922
deflate returned with avail_in 0, avail_out 1913, total_in 4096, total_out
2171
zlib compressed 4096 bytes into 2177
datalen is 881
flash_ofs is 1fc1bc
nand_read_ecc: from = 0x001fc1bc, len = 16
datalen is 881
flash_ofs is 1fc1bc
cnt is 2
nand_write_ecc: to = 0x001fc000, len = 512
nand_write_page: Failed write verify, page 0x00000fe0
<2>jffs2_flush_wbuf(): Write failed with -5
jffs2_flush_wbuf() called from jffs2_flash_writev() failed -5
retlen is 0
Write of 2245 bytes at 0x001fc1bc failed. returned -5, retlen 0
Not marking the space at 0x001fc1bc as dirty because the flash driver
returned retlen zero
jffs2_complete_reservation()
thread_should_wake(): nr_free_blocks 254, nr_erasing_blocks 0, dirty_size
0x0: no
jffs2_commit_write(): Not all bytes written. Marking page !uptodate
jffs2_commit_write() returning -5
cp: /home/erase: Input/output error
====================================================
After copying, I list it. Nothing copied.
=====================================================
/root>ls -al /home/erase
-rwxr-xr-x 1 root root 0 Jan 1 00:39 /home/erase
/root>
====================================================
After unmount /home, system printed.
=================================================
/root>umount /home
jffs2_clear_inode(): ino #2 mode 100744
jffs2_kill_fragtree: frag at 0x0-0xd3: node c0ad6350, frags 1--
jffs2_cl 56
jffs2_garbage_collect_thread(): SIGKILL received.
nand_write_ecc: to = 0x001fc000, len = 512
nand_write_page: Failed write verify, page 0x00000fe0
<2>jffs2_flush_wbuf(): Write failed with -5
jffs2_free_ino_caches: Freeing ino #1 at c0e2b260
Freeing inocache at c0e2b260
jffs2_free_ino_caches: Freeing ino #2 at c0e2b278
Freeing inocache at c0e2b278
jffs2_free_ino_caches: Freeing ino #3 at c0e2b290
Freeing inocache at c0e2b290
nand_sync: called
jffs2_put_super returning
mtdblock_release
nand_sync: called
ok
/root>
------------------------------------------------------
That's all. Can somebody tell me what's happened ?
How do I fix it ?
regards,
Brian
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Write error on the nand flash !
2002-12-03 22:09 Write error on the nand flash ! shadow
@ 2002-12-04 10:37 ` Thomas Gleixner
2002-12-04 15:27 ` shadow
0 siblings, 1 reply; 6+ messages in thread
From: Thomas Gleixner @ 2002-12-04 10:37 UTC (permalink / raw)
To: shadow, linux-mtd
On Tuesday 03 December 2002 23:09, shadow wrote:
> nand_write_ecc: to = 0x001fc000, len = 512
> nand_write_page: Failed write verify, page 0x00000fe0
Do you use latest MTD-CVS code ? If not, please upgrade.
If yes, can I have a look at your hardware driver ?
--
Thomas
____________________________________________________
linutronix - competence in embedded & realtime linux
http://www.linutronix.de
mail: tglx@linutronix.de
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Write error on the nand flash !
2002-12-04 10:37 ` Thomas Gleixner
@ 2002-12-04 15:27 ` shadow
0 siblings, 0 replies; 6+ messages in thread
From: shadow @ 2002-12-04 15:27 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: linux-mtd
[-- Attachment #1: Type: TEXT/PLAIN, Size: 558 bytes --]
On Wed, 4 Dec 2002, Thomas Gleixner wrote:
> On Tuesday 03 December 2002 23:09, shadow wrote:
> > nand_write_ecc: to = 0x001fc000, len = 512
> > nand_write_page: Failed write verify, page 0x00000fe0
> Do you use latest MTD-CVS code ? If not, please upgrade.
> If yes, can I have a look at your hardware driver ?
>
>
This is my driver, and I only modified edb7312.c. I replaced
this->dev_ready=ep7312_device_ready to this->dev_ready=NULL if not change
it, eraseall can not erase nand flash and system can not mount partitions.
Thanks in advance,
Brian
[-- Attachment #2: Type: TEXT/PLAIN, Size: 25371 bytes --]
/*
* drivers/mtd/nand.c
*
* Overview:
* This is the generic MTD driver for NAND flash devices. It should be
* capable of working with almost all NAND chips currently available.
*
* Additional technical information is available on
* http://www.linux-mtd.infradead.org/tech/nand.html
*
* Copyright (C) 2000 Steven J. Hill (sjhill@cotw.com)
* 2002 Thomas Gleixner (tglx@linutronix.de)
*
* 10-29-2001 Thomas Gleixner (tglx@linutronix.de)
* - Changed nand_chip structure for controlline function to
* support different hardware structures (Access to
* controllines ALE,CLE,NCE via hardware specific function.
* - exit out of "failed erase block" changed, to avoid
* driver hangup
* - init_waitqueue_head added in function nand_scan !!
*
* 01-30-2002 Thomas Gleixner (tglx@linutronix.de)
* change in nand_writev to block invalid vecs entries
*
* 02-11-2002 Thomas Gleixner (tglx@linutronix.de)
* - major rewrite to avoid duplicated code
* common nand_write_page function
* common get_chip function
* - added oob_config structure for out of band layouts
* - write_oob changed for partial programming
* - read cache for faster access for subsequent reads
* from the same page.
* - support for different read/write address
* - support for device ready/busy line
* - read oob for more than one page enabled
*
* 02-27-2002 Thomas Gleixner (tglx@linutronix.de)
* - command-delay can be programmed
* - fixed exit from erase with callback-function enabled
*
* 03-21-2002 Thomas Gleixner (tglx@linutronix.de)
* - DEBUG improvements provided by Elizabeth Clarke
* (eclarke@aminocom.com)
* - added zero check for this->chip_delay
*
* 04-03-2002 Thomas Gleixner (tglx@linutronix.de)
* - added added hw-driver supplied command and wait functions
* - changed blocking for erase (erase suspend enabled)
* - check pointers before accessing flash provided by
* John Hall (john.hall@optionexist.co.uk)
*
* 04-09-2002 Thomas Gleixner (tglx@linutronix.de)
* - nand_wait repaired
*
* 04-28-2002 Thomas Gleixner (tglx@linutronix.de)
* - OOB config defines moved to nand.h
*
* 08-01-2002 Thomas Gleixner (tglx@linutronix.de)
* - changed my mailaddress, added pointer to tech/nand.html
*
* 08-07-2002 Thomas Gleixner (tglx@linutronix.de)
* forced bad block location to byte 5 of OOB, even if
* CONFIG_MTD_NAND_ECC_JFFS2 is not set, to prevent
* erase /dev/mtdX from erasing bad blocks and destroying
* bad block info
*
* 08-10-2002 Thomas Gleixner (tglx@linutronix.de)
* Fixed writing tail of data. Thanks to Alice Hennessy
* <ahennessy@mvista.com>.
*
* 08-10-2002 Thomas Gleixner (tglx@linutronix.de)
* nand_read_ecc and nand_write_page restructured to support
* hardware ECC. Thanks to Steven Hein (ssh@sgi.com)
* for basic implementation and suggestions.
* 3 new pointers in nand_chip structure:
* calculate_ecc, correct_data, enabled_hwecc
* forcing all hw-drivers to support page cache
* eccvalid_pos is now mandatory
*
* 08-17-2002 tglx: fixed signed/unsigned missmatch in write.c
* Thanks to Ken Offer <koffer@arlut.utexas.edu>
*
* 08-29-2002 tglx: use buffered read/write only for non pagealigned
* access, speed up the aligned path by using the fs-buffer
* reset chip removed from nand_select(), implicit done
* only, when erase is interrupted
* waitfuntion use yield, instead of schedule_timeout
* support for 6byte/512byte hardware ECC
* read_ecc, write_ecc extended for different oob-layout
* selections: Implemented NAND_NONE_OOB, NAND_JFFS2_OOB,
* NAND_YAFFS_OOB. fs-driver gives one of these constants
* to select the oob-layout fitting the filesystem.
* oobdata can be read together with the raw data, when
* the fs-driver supplies a big enough buffer.
* size = 12 * number of pages to read (256B pagesize)
* 24 * number of pages to read (512B pagesize)
* the buffer contains 8/16 byte oobdata and 4/8 byte
* returncode from calculate_ecc
* oobdata can be given from filesystem to program them
* in one go together with the raw data. ECC codes are
* filled in at the place selected by oobsel.
*
* 09-04-2002 tglx: fixed write_verify (John Hall (john.hall@optionexist.co.uk))
*
* 11-11-2002 tglx: fixed debug output in nand_write_page
* (John Hall (john.hall@optionexist.co.uk))
*
* 11-25-2002 tglx: Moved device ID/ manufacturer ID from nand_ids.h
* Splitted device ID and manufacturer ID table.
* Removed CONFIG_MTD_NAND_ECC, as it defaults to ECC_NONE for
* mtd->read / mtd->write and is controllable by the fs driver
* for mtd->read_ecc / mtd->write_ecc
* some minor cleanups
*
* $Id: nand.c,v 1.35 2002/12/01 13:23:05 gleixner Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
#include <linux/interrupt.h>
#include <asm/io.h>
/*
* Macros for low-level register control
*/
#define nand_select() this->hwcontrol(NAND_CTL_SETNCE);
#define nand_deselect() this->hwcontrol(NAND_CTL_CLRNCE);
/*
* out of band configuration for different filesystems
*/
static int oobconfigs[][6] = {
{ 0,0,0,0,0,0},
{ NAND_JFFS2_OOB_ECCPOS0, NAND_JFFS2_OOB_ECCPOS1, NAND_JFFS2_OOB_ECCPOS2,
NAND_JFFS2_OOB_ECCPOS3, NAND_JFFS2_OOB_ECCPOS4, NAND_JFFS2_OOB_ECCPOS5 },
{ NAND_YAFFS_OOB_ECCPOS0, NAND_YAFFS_OOB_ECCPOS1, NAND_YAFFS_OOB_ECCPOS2,
NAND_YAFFS_OOB_ECCPOS3, NAND_YAFFS_OOB_ECCPOS4, NAND_YAFFS_OOB_ECCPOS5 }
};
/*
* NAND low-level MTD interface functions
*/
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, int 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_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf);
static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
size_t * retlen, const u_char * buf, u_char * eccbuf, int oobsel);
static int nand_write_oob (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char *buf);
static int nand_writev (struct mtd_info *mtd, const struct iovec *vecs,
unsigned long count, loff_t to, size_t * retlen);
static int nand_writev_ecc (struct mtd_info *mtd, const struct iovec *vecs,
unsigned long count, loff_t to, size_t * retlen, u_char *eccbuf, int oobsel);
static int nand_erase (struct mtd_info *mtd, struct erase_info *instr);
static void nand_sync (struct mtd_info *mtd);
static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this, int page, int col,
int last, u_char *oob_buf, int oobsel);
/*
* Send command to NAND device
*/
static void nand_command (struct mtd_info *mtd, unsigned command, int column, int page_addr)
{
register struct nand_chip *this = mtd->priv;
register unsigned long NAND_IO_ADDR = this->IO_ADDR_W;
/* Begin command latch cycle */
this->hwcontrol (NAND_CTL_SETCLE);
/*
* Write out the command to the device.
*/
if (command != NAND_CMD_SEQIN)
writeb (command, NAND_IO_ADDR);
else {
if (mtd->oobblock == 256 && column >= 256) {
column -= 256;
writeb (NAND_CMD_READOOB, NAND_IO_ADDR);
writeb (NAND_CMD_SEQIN, NAND_IO_ADDR);
} else if (mtd->oobblock == 512 && column >= 256) {
if (column < 512) {
column -= 256;
writeb (NAND_CMD_READ1, NAND_IO_ADDR);
writeb (NAND_CMD_SEQIN, NAND_IO_ADDR);
} else {
column -= 512;
writeb (NAND_CMD_READOOB, NAND_IO_ADDR);
writeb (NAND_CMD_SEQIN, NAND_IO_ADDR);
}
} else {
writeb (NAND_CMD_READ0, NAND_IO_ADDR);
writeb (NAND_CMD_SEQIN, NAND_IO_ADDR);
}
}
/* Set ALE and clear CLE to start address cycle */
this->hwcontrol (NAND_CTL_CLRCLE);
if (column != -1 || page_addr != -1) {
this->hwcontrol (NAND_CTL_SETALE);
/* Serially input address */
if (column != -1)
writeb (column, NAND_IO_ADDR);
if (page_addr != -1) {
writeb ((unsigned char) (page_addr & 0xff), NAND_IO_ADDR);
writeb ((unsigned char) ((page_addr >> 8) & 0xff), NAND_IO_ADDR);
/* One more address cycle for higher density devices */
if (mtd->size & 0x0c000000)
writeb ((unsigned char) ((page_addr >> 16) & 0x0f), NAND_IO_ADDR);
}
/* Latch in address */
this->hwcontrol (NAND_CTL_CLRALE);
}
/*
* program and erase have their own busy handlers
* status and sequential in needs no delay
*/
switch (command) {
case NAND_CMD_PAGEPROG:
case NAND_CMD_ERASE1:
case NAND_CMD_ERASE2:
case NAND_CMD_SEQIN:
case NAND_CMD_STATUS:
return;
case NAND_CMD_RESET:
if (this->dev_ready)
break;
//saturn
//udelay (50);
this->hwcontrol (NAND_CTL_SETCLE);
writeb (NAND_CMD_STATUS, NAND_IO_ADDR);
this->hwcontrol (NAND_CTL_CLRCLE);
while ( !(readb (this->IO_ADDR_R) & 0x40));
return;
/* This applies to read commands */
default:
/*
* If we don't have access to the busy pin, we apply the given
* command delay
*/
// saturn
if (!this->dev_ready) {
udelay (this->chip_delay);
return;
}
}
/* wait until command is processed */
while (!this->dev_ready());
}
/*
* Get chip for selected access
*/
static inline void nand_get_chip (struct nand_chip *this, struct mtd_info *mtd, int new_state, int *erase_state)
{
DECLARE_WAITQUEUE (wait, current);
/*
* Grab the lock and see if the device is available
* For erasing, we keep the spinlock until the
* erase command is written.
*/
retry:
spin_lock_bh (&this->chip_lock);
if (this->state == FL_READY) {
this->state = new_state;
if (new_state != FL_ERASING)
spin_unlock_bh (&this->chip_lock);
return;
}
if (this->state == FL_ERASING) {
if (new_state != FL_ERASING) {
this->state = new_state;
spin_unlock_bh (&this->chip_lock);
nand_select (); /* select in any case */
this->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
return;
}
}
set_current_state (TASK_UNINTERRUPTIBLE);
add_wait_queue (&this->wq, &wait);
spin_unlock_bh (&this->chip_lock);
schedule ();
remove_wait_queue (&this->wq, &wait);
goto retry;
}
/*
* 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
*
*/
static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state)
{
unsigned long timeo = jiffies;
int status;
if (state == FL_ERASING)
timeo += (HZ * 400) / 1000;
else
timeo += (HZ * 20) / 1000;
spin_lock_bh (&this->chip_lock);
this->cmdfunc (mtd, NAND_CMD_STATUS, -1, -1);
while (time_before(jiffies, timeo)) {
/* Check, if we were interrupted */
if (this->state != state) {
spin_unlock_bh (&this->chip_lock);
return 0;
}
if (this->dev_ready) {
if (this->dev_ready ())
break;
}
//udelay(1000);
if (readb (this->IO_ADDR_R) & 0x40)
break;
spin_unlock_bh (&this->chip_lock);
yield ();
spin_lock_bh (&this->chip_lock);
}
status = (int) readb (this->IO_ADDR_R);
spin_unlock_bh (&this->chip_lock);
return status;
}
/*
* Nand_page_program function is used for write and writev !
*/
static int nand_write_page (struct mtd_info *mtd, struct nand_chip *this,
int page, int col, int last, u_char *oob_buf, int oobsel)
{
int i, status;
u_char ecc_code[6], *oob_data;
int eccmode = oobsel ? this->eccmode : NAND_ECC_NONE;
int *oob_config = oobconfigs[oobsel];
/* pad oob area, if we have no oob buffer from fs-driver */
if (!oob_buf) {
oob_data = &this->data_buf[mtd->oobblock];
for (i = 0; i < mtd->oobsize; i++)
oob_data[i] = 0xff;
} else
oob_data = oob_buf;
/* software ecc 3 Bytes ECC / 256 Byte Data ? */
if (eccmode == NAND_ECC_SOFT) {
/* Read back previous written data, if col > 0 */
if (col) {
this->cmdfunc (mtd, NAND_CMD_READ0, 0, page);
for (i = 0; i < col; i++)
this->data_poi[i] = readb (this->IO_ADDR_R);
}
if ((col < this->eccsize) && (last >= this->eccsize)) {
this->calculate_ecc (&this->data_poi[0], &(ecc_code[0]));
for (i = 0; i < 3; i++)
oob_data[oob_config[i]] = ecc_code[i];
}
/* Calculate and write the second ECC if we have enough data */
if ((mtd->oobblock == 512) && (last == 512)) {
this->calculate_ecc (&this->data_poi[256], &(ecc_code[3]));
for (i = 3; i < 6; i++)
oob_data[oob_config[i]] = ecc_code[i];
}
} else {
/* For hardware ECC skip ECC, if we have no full page write */
if (eccmode != NAND_ECC_NONE && (col || last != mtd->oobblock))
eccmode = NAND_ECC_NONE;
}
/* Prepad for partial page programming !!! */
for (i = 0; i < col; i++)
this->data_poi[i] = 0xff;
/* Postpad for partial page programming !!! oob is already padded */
for (i = last; i < mtd->oobblock; i++)
this->data_poi[i] = 0xff;
/* Send command to begin auto page programming */
this->cmdfunc (mtd, NAND_CMD_SEQIN, 0x00, page);
/* Write out complete page of data, take care of eccmode */
switch (this->eccmode) {
/* No ecc and software ecc 3/256, write all */
case NAND_ECC_NONE:
case NAND_ECC_SOFT:
for (i = 0; i < mtd->oobblock; i++)
writeb ( this->data_poi[i] , this->IO_ADDR_W);
break;
/* Hardware ecc 3 byte / 256 data, write first half, get ecc, then second, if 512 byte pagesize */
case NAND_ECC_HW3_256:
this->enable_hwecc (NAND_ECC_WRITE); /* enable hardware ecc logic for write */
for (i = 0; i < mtd->eccsize; i++)
writeb ( this->data_poi[i] , this->IO_ADDR_W);
this->calculate_ecc (NULL, &(ecc_code[0]));
for (i = 0; i < 3; i++)
oob_data[oob_config[i]] = ecc_code[i];
if (mtd->oobblock == 512) {
this->enable_hwecc (NAND_ECC_WRITE); /* enable hardware ecc logic for write*/
for (i = mtd->eccsize; i < mtd->oobblock; i++)
writeb ( this->data_poi[i] , this->IO_ADDR_W);
this->calculate_ecc (NULL, &(ecc_code[3]));
for (i = 3; i < 6; i++)
oob_data[oob_config[i]] = ecc_code[i];
}
break;
/* Hardware ecc 3 byte / 512 byte data, write full page */
case NAND_ECC_HW3_512:
this->enable_hwecc (NAND_ECC_WRITE); /* enable hardware ecc logic */
for (i = 0; i < mtd->oobblock; i++)
writeb ( this->data_poi[i] , this->IO_ADDR_W);
this->calculate_ecc (NULL, &(ecc_code[0]));
for (i = 0; i < 3; i++)
oob_data[oob_config[i]] = ecc_code[i];
break;
/* Hardware ecc 6 byte / 512 byte data, write full page */
case NAND_ECC_HW6_512:
this->enable_hwecc (NAND_ECC_WRITE); /* enable hardware ecc logic */
for (i = 0; i < mtd->oobblock; i++)
writeb ( this->data_poi[i] , this->IO_ADDR_W);
this->calculate_ecc (NULL, &(ecc_code[0]));
for (i = 0; i < 6; i++)
oob_data[oob_config[i]] = ecc_code[i];
break;
default:
printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
BUG();
}
/* Write out OOB data */
for (i = 0; i < mtd->oobsize; i++)
writeb ( oob_data[i] , this->IO_ADDR_W);
/* Send command to actually program the data */
this->cmdfunc (mtd, NAND_CMD_PAGEPROG, -1, -1);
/* call wait ready function */
status = this->waitfunc (mtd, this, FL_WRITING);
/* See if device thinks it succeeded */
if (status & 0x01) {
DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write, page 0x%08x, ", __FUNCTION__, page);
return -EIO;
}
#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
/*
* The NAND device assumes that it is always writing to
* a cleanly erased page. Hence, it performs its internal
* write verification only on bits that transitioned from
* 1 to 0. The device does NOT verify the whole page on a
* byte by byte basis. It is possible that the page was
* not completely erased or the page is becoming unusable
* due to wear. The read with ECC would catch the error
* later when the ECC page check fails, but we would rather
* catch it early in the page write stage. Better to write
* no data than invalid data.
*/
/* Send command to read back the page */
this->cmdfunc (mtd, NAND_CMD_READ0, col, page);
/* Loop through and verify the data */
for (i = col; i < last; i++) {
if (this->data_buf[i] != readb (this->IO_ADDR_R)) {
DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
return -EIO;
}
}
/* check, if we have a fs-supplied oob-buffer */
if (oob_buf) {
for (i = 0; i < mtd->oobsize; i++) {
if (oob_data[i] != readb (this->IO_ADDR_R)) {
DEBUG (MTD_DEBUG_LEVEL0, "%s: " "Failed write verify, page 0x%08x ", __FUNCTION__, page);
return -EIO;
}
}
} else {
if (eccmode != NAND_ECC_NONE && !col && last == mtd->oobblock) {
int ecc_bytes = 0;
switch (this->eccmode) {
case NAND_ECC_SOFT:
case NAND_ECC_HW3_256: ecc_bytes = (mtd->oobblock == 512) ? 6 : 3; break;
case NAND_ECC_HW3_512: ecc_bytes = 3; break;
case NAND_ECC_HW6_512: ecc_bytes = 6; break;
}
for (i = 0; i < mtd->oobsize; i++)
oob_data[i] = readb (this->IO_ADDR_R);
for (i = 0; i < ecc_bytes; i++) {
if (oob_data[oob_config[i]] != ecc_code[i]) {
DEBUG (MTD_DEBUG_LEVEL0,
"%s: Failed ECC write "
"verify, page 0x%08x, " "%6i bytes were succesful\n", __FUNCTION__, page, i);
return -EIO;
}
}
}
}
#endif
return 0;
}
/*
* Use NAND read ECC
*/
static int nand_read (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf)
{
return (nand_read_ecc (mtd, from, len, retlen, buf, NULL, 0));
}
/*
* NAND read with ECC
*/
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, int oobsel)
{
int j, col, page, end, ecc;
int erase_state = 0;
int read = 0, oob = 0, ecc_status = 0, ecc_failed = 0;
struct nand_chip *this = mtd->priv;
u_char *data_poi, *oob_data = oob_buf;
u_char ecc_calc[6];
u_char ecc_code[6];
int eccmode = oobsel ? this->eccmode : NAND_ECC_NONE;
int *oob_config = oobconfigs[oobsel];
DEBUG (MTD_DEBUG_LEVEL3, "nand_read_ecc: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
/* Do not allow reads past end of device */
if ((from + len) > mtd->size) {
DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: Attempt read beyond end of device\n");
*retlen = 0;
return -EINVAL;
}
/* Grab the lock and see if the device is available */
nand_get_chip (this, mtd ,FL_READING, &erase_state);
/* Select the NAND device */
nand_select ();
/* First we calculate the starting page */
page = from >> this->page_shift;
/* Get raw starting column */
col = from & (mtd->oobblock - 1);
end = mtd->oobblock;
ecc = mtd->eccsize;
/* Send the read command */
this->cmdfunc (mtd, NAND_CMD_READ0, 0x00, page);
/* Loop until all data read */
while (read < len) {
/* If we have consequent page reads, apply delay or wait for ready/busy pin */
if (read) {
if (!this->dev_ready)
udelay (this->chip_delay);
else
while (!this->dev_ready());
}
/*
* If the read is not page aligned, we have to read into data buffer
* due to ecc, else we read into return buffer direct
*/
if (!col && (len - read) >= end)
data_poi = &buf[read];
else
data_poi = this->data_buf;
/* get oob area, if we have no oob buffer from fs-driver */
if (!oob_buf) {
oob_data = &this->data_buf[end];
oob = 0;
}
j = 0;
switch (eccmode) {
case NAND_ECC_NONE: /* No ECC, Read in a page */
while (j < end)
data_poi[j++] = readb (this->IO_ADDR_R);
break;
case NAND_ECC_SOFT: /* Software ECC 3/256: Read in a page + oob data */
while (j < end)
data_poi[j++] = readb (this->IO_ADDR_R);
this->calculate_ecc (&data_poi[0], &ecc_calc[0]);
if (mtd->oobblock == 512)
this->calculate_ecc (&data_poi[256], &ecc_calc[3]);
break;
case NAND_ECC_HW3_256: /* Hardware ECC 3 byte /256 byte data: Read in first 256 byte, get ecc, */
this->enable_hwecc (NAND_ECC_READ);
while (j < ecc)
data_poi[j++] = readb (this->IO_ADDR_R);
this->calculate_ecc (&data_poi[0], &ecc_calc[0]); /* read from hardware */
if (mtd->oobblock == 512) { /* read second, if pagesize = 512 */
this->enable_hwecc (NAND_ECC_READ);
while (j < end)
data_poi[j++] = readb (this->IO_ADDR_R);
this->calculate_ecc (&data_poi[256], &ecc_calc[3]); /* read from hardware */
}
break;
case NAND_ECC_HW3_512:
case NAND_ECC_HW6_512: /* Hardware ECC 3/6 byte / 512 byte data : Read in a page */
this->enable_hwecc (NAND_ECC_READ);
while (j < end)
data_poi[j++] = readb (this->IO_ADDR_R);
this->calculate_ecc (&data_poi[0], &ecc_calc[0]); /* read from hardware */
break;
default:
printk (KERN_WARNING "Invalid NAND_ECC_MODE %d\n", this->eccmode);
BUG();
}
/* read oobdata */
for (j = 0; j < mtd->oobsize; j++)
oob_data[oob + j] = readb (this->IO_ADDR_R);
/* Skip ECC, if not active */
if (eccmode == NAND_ECC_NONE)
goto readdata;
/* Pick the ECC bytes out of the oob data */
for (j = 0; j < 6; j++)
ecc_code[j] = oob_data[oob + oob_config[j]];
/* correct data, if neccecary */
ecc_status = this->correct_data (&data_poi[0], &ecc_code[0], &ecc_calc[0]);
/* check, if we have a fs supplied oob-buffer */
if (oob_buf) {
oob += mtd->oobsize;
*((int *)&oob_data[oob]) = ecc_status;
oob += sizeof(int);
}
if (ecc_status == -1) {
DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page);
ecc_failed++;
}
if (mtd->oobblock == 512 && eccmode != NAND_ECC_HW3_512) {
ecc_status = this->correct_data (&data_poi[256], &ecc_code[3], &ecc_calc[3]);
if (oob_buf) {
*((int *)&oob_data[oob]) = ecc_status;
oob += sizeof(int);
}
if (ecc_status == -1) {
DEBUG (MTD_DEBUG_LEVEL0, "nand_read_ecc: " "Failed ECC read, page 0x%08x\n", page);
ecc_failed++;
}
}
readdata:
if (col || (len - read) < end) {
for (j = col; j < end && read < len; j++)
buf[read++] = data_poi[j];
} else
read += mtd->oobblock;
/* For subsequent reads align to page boundary. */
col = 0;
/* Increment page address */
page++;
}
/* De-select the NAND device */
nand_deselect ();
/* Wake up anyone waiting on the device */
spin_lock_bh (&this->chip_lock);
this->state = FL_READY;
wake_up (&this->wq);
spin_unlock_bh (&this->chip_lock);
/*
* Return success, if no ECC failures, else -EIO
* fs driver will take care of that, because
* retlen == desired len and result == -EIO
*/
*retlen = read;
return ecc_failed ? -EIO : 0;
}
/*
* NAND read out-of-band
*/
static int nand_read_oob (struct mtd_info *mtd, loff_t from, size_t len, size_t * retlen, u_char * buf)
{
int i, col, page;
int erase_state = 0;
struct nand_chip *this = mtd->priv;
DEBUG (MTD_DEBUG_LEVEL3, "nand_read_oob: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
/* Shift to get page */
page = ((int) from) >> this->page_shift;
/* Mask to get column */
col = from & 0x0f;
/* Initialize return length value */
*retlen = 0;
/* Do not allow reads past end of device */
if ((from + len) > mtd->size) {
DEBUG (MTD_DEBUG_LEVEL0, "nand_read_oob: Attempt read beyond end of device\n");
*retlen = 0;
return -EINVAL;
}
/* Grab the lock and see if the device is available */
nand_get_chip (this, mtd , FL_READING, &erase_state);
/* Select the NAND device */
nand_select ();
/* Send the read command */
this->cmdfunc (mtd, NAND_CMD_READOOB, col, page);
/*
* Read the data, if we read more than one page
* oob data, let the device transfer the data !
*/
for (i = 0; i < len; i++) {
buf[i] = readb (this->IO_ADDR_R);
if ((col++ & (mtd->oobsize - 1)) == (mtd->oobsize - 1))
udelay (this->chip_delay);
}
/* De-select the NAND device */
nand_deselect ();
/* Wake up anyone waiting on the device */
spin_lock_bh (&this->chip_lock);
this->state = FL_READY;
wake_up (&this->wq);
spin_unlock_bh (&this->chip_lock);
/* Return happy */
*retlen = len;
return 0;
}
/*
* Use NAND write ECC
*/
static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf)
{
return (nand_write_ecc (mtd, to, len, retlen, buf, NULL, 0));
}
/*
* NAND write with ECC
*/
static int nand_write_ecc (struct mtd_info *mtd, loff_t to, size_t len,
s
[-- Attachment #3: Type: TEXT/PLAIN, Size: 7083 bytes --]
/*
* drivers/mtd/nand/edb7312.c
*
* Copyright (C) 2002 Marius Gröger (mag@sysgo.de)
*
* Derived from drivers/mtd/nand/autcpu12.c
* Copyright (c) 2001 Thomas Gleixner (gleixner@autronix.de)
*
* $Id: edb7312.c,v 1.3 2002/06/06 12:58:16 mag Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Overview:
* This is a device driver for the NAND flash device found on the
* CLEP7312 board which utilizes the Toshiba TC58V64AFT part. This is
* a 64Mibit (8MiB x 8 bits) NAND flash device.
*/
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <asm/io.h>
#include <asm/arch/hardware.h> /* for CLPS7111_VIRT_BASE */
#include <asm/sizes.h>
#include <asm/hardware/clps7111.h>
/*
* MTD structure for EDB7312 board
*/
static struct mtd_info *ep7312_mtd = NULL;
/*
* Values specific to the EDB7312 board (used with EP7312 processor)
*/
#define EP7312_FIO_PBASE 0x10000000 /* Phys address of flash */
#define EP7312_PXDR 0x0001 /*
* IO offset to Port B data register
* where the CLE, ALE and NCE pins
* are wired to.
*/
#define EP7312_PXDDR 0x0041 /*
* IO offset to Port B data direction
* register so we can control the IO
* lines.
*/
/*
* Module stuff
*/
static int ep7312_fio_pbase = EP7312_FIO_PBASE;
static int ep7312_pxdr = EP7312_PXDR;
static int ep7312_pxddr = EP7312_PXDDR;
#ifdef MODULE
MODULE_PARM(ep7312_fio_pbase, "i");
MODULE_PARM(ep7312_pxdr, "i");
MODULE_PARM(ep7312_pxddr, "i");
__setup("ep7312_fio_pbase=",ep7312_fio_pbase);
__setup("ep7312_pxdr=",ep7312_pxdr);
__setup("ep7312_pxddr=",ep7312_pxddr);
#endif
#ifdef CONFIG_MTD_PARTITIONS
/*
* Define static partitions for flash device
*/
static struct mtd_partition partition_info[] = {
{ name: "EP7312 Nand Flash",
offset: 0,
size: 2*1024*1024 }
};
#define NUM_PARTITIONS 1
extern int parse_cmdline_partitions(struct mtd_info *master,
struct mtd_partition **pparts,
const char *mtd_id);
#endif
/*
* hardware specific access to control-lines
*/
static void ep7312_hwcontrol(int cmd)
{
switch(cmd) {
case NAND_CTL_SETCLE:
clps_writeb(clps_readb(ep7312_pxdr) | 0x10, ep7312_pxdr);
break;
case NAND_CTL_CLRCLE:
clps_writeb(clps_readb(ep7312_pxdr) & ~0x10, ep7312_pxdr);
break;
case NAND_CTL_SETALE:
clps_writeb(clps_readb(ep7312_pxdr) | 0x20, ep7312_pxdr);
break;
case NAND_CTL_CLRALE:
clps_writeb(clps_readb(ep7312_pxdr) & ~0x20, ep7312_pxdr);
break;
case NAND_CTL_SETNCE:
clps_writeb(clps_readb(ep7312_pxdr) & ~0x40, ep7312_pxdr);
//clps_writeb((clps_readb(ep7312_pxdr) | 0x80) & ~0x40, ep7312_pxdr);
break;
case NAND_CTL_CLRNCE:
clps_writeb(clps_readb(ep7312_pxdr) | 0x40, ep7312_pxdr);
//clps_writeb((clps_readb(ep7312_pxdr) | 0x80) | 0x40, ep7312_pxdr);
break;
}
}
/*
* read device ready pin
*/
static int ep7312_device_ready(void)
{
return 1;
}
/*
* Main initialization routine
*/
static int __init ep7312_init (void)
{
struct nand_chip *this;
const char *part_type = 0;
int mtd_parts_nb = 0;
struct mtd_partition *mtd_parts = 0;
int ep7312_fio_base;
/* Allocate memory for MTD device structure and private data */
ep7312_mtd = kmalloc(sizeof(struct mtd_info) +
sizeof(struct nand_chip),
GFP_KERNEL);
if (!ep7312_mtd) {
printk("Unable to allocate EDB7312 NAND MTD device structure.\n");
return -ENOMEM;
}
/* map physical adress */
ep7312_fio_base = (unsigned long)ioremap(ep7312_fio_pbase, SZ_1K);
//ep7312_fio_base = 0xfb000000;
if(!ep7312_fio_base) {
printk("ioremap EDB7312 NAND flash failed\n");
kfree(ep7312_mtd);
return -EIO;
}
/* Get pointer to private data */
this = (struct nand_chip *) (&ep7312_mtd[1]);
/* Initialize structures */
memset((char *) ep7312_mtd, 0, sizeof(struct mtd_info));
memset((char *) this, 0, sizeof(struct nand_chip));
/* Link the private data with the MTD structure */
ep7312_mtd->priv = this;
/*
* Set GPIO Port B control register so that the pins are configured
* to be outputs for controlling the NAND flash.
*/
clps_writeb(0xf0, ep7312_pxddr);
/* insert callbacks */
this->IO_ADDR_R = ep7312_fio_base;
this->IO_ADDR_W = ep7312_fio_base;
this->hwcontrol = ep7312_hwcontrol;
//this->dev_ready = ep7312_device_ready;
this->dev_ready = NULL;
/* 15 us command delay time */
this->chip_delay = 50;
/* Scan to find existence of the device */
if (nand_scan (ep7312_mtd)) {
iounmap((void *)ep7312_fio_base);
kfree (ep7312_mtd);
return -ENXIO;
}
/* Allocate memory for internal data buffer */
this->data_buf = kmalloc (sizeof(u_char) * (ep7312_mtd->oobblock + ep7312_mtd->oobsize), GFP_KERNEL);
if (!this->data_buf) {
printk("Unable to allocate NAND data buffer for EDB7312.\n");
iounmap((void *)ep7312_fio_base);
kfree (ep7312_mtd);
return -ENOMEM;
}
/* Allocate memory for internal data buffer */
this->data_cache = kmalloc (sizeof(u_char) * (ep7312_mtd->oobblock + ep7312_mtd->oobsize), GFP_KERNEL);
if (!this->data_cache) {
printk("Unable to allocate NAND data cache for EDB7312.\n");
kfree (this->data_buf);
iounmap((void *)ep7312_fio_base);
kfree (ep7312_mtd);
return -ENOMEM;
}
this->cache_page = -1;
#ifdef CONFIG_MTD_CMDLINE_PARTS
mtd_parts_nb = parse_cmdline_partitions(ep7312_mtd, &mtd_parts,
"edb7312-nand");
if (mtd_parts_nb > 0)
part_type = "command line";
else
mtd_parts_nb = 0;
#endif
if (mtd_parts_nb == 0)
{
mtd_parts = partition_info;
mtd_parts_nb = NUM_PARTITIONS;
part_type = "static";
}
/* Register the partitions */
printk(KERN_NOTICE "Using %s partition definition\n", part_type);
add_mtd_partitions(ep7312_mtd, mtd_parts, mtd_parts_nb);
printk("edb7312_mtd->erasesize = %d\n", ep7312_mtd->erasesize);
printk("edb7312_mtd->oobblock = %d\n", ep7312_mtd->oobblock);
printk("edb7312_mtd->oobsize = %d\n", ep7312_mtd->oobsize);
printk("edb7312_mtd->eccsize = %d\n", ep7312_mtd->eccsize);
printk("edb7312_chip->page_shift = %d\n", this->page_shift);
/* Return happy */
return 0;
}
module_init(ep7312_init);
/*
* Clean up routine
*/
static void __exit ep7312_cleanup (void)
{
struct nand_chip *this = (struct nand_chip *) &ep7312_mtd[1];
/* Unregister the device */
del_mtd_device (ep7312_mtd);
/* Free internal data buffer */
kfree (this->data_buf);
kfree (this->data_cache);
/* Free the MTD device structure */
kfree (ep7312_mtd);
}
module_exit(ep7312_cleanup);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Marius Groeger <mag@sysgo.de>");
MODULE_DESCRIPTION("MTD map driver for Cogent EDB7312 board");
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Write error on the nand flash !
2002-12-05 20:58 ` Thomas Gleixner
@ 2002-12-05 13:37 ` shadow
0 siblings, 0 replies; 6+ messages in thread
From: shadow @ 2002-12-05 13:37 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: Dave Ellis, linux-mtd
On Thu, 5 Dec 2002, Thomas Gleixner wrote:
> On Thursday 05 December 2002 19:57, Dave Ellis wrote:
> > My patch at
> > http://lists.infradead.org/pipermail/linux-mtd/2002-October/006218.html
> > fixes a problem with nand_write_page that could cause this. It is
> > not in the latest CVS version of nand.c.
> >
> > Dave
> Dave,
> Thanx for remebering me. It got lost anyhow.
> Fixed in CVS.
>
>
Dave,
Thanks! It is ok!
Brian
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: Write error on the nand flash !
@ 2002-12-05 18:57 Dave Ellis
2002-12-05 20:58 ` Thomas Gleixner
0 siblings, 1 reply; 6+ messages in thread
From: Dave Ellis @ 2002-12-05 18:57 UTC (permalink / raw)
To: 'shadow'; +Cc: linux-mtd
shadow [mailto:saturn@structure.biochem.nchu.edu.tw] wrote:
> If I copy the larger file to nand flash, the system will tell me some
> wrong ? These is my error log..
[snip]
> nand_write_ecc: to = 0x001fc000, len = 512
> nand_write_page: Failed write verify, page 0x00000fe0
My patch at
http://lists.infradead.org/pipermail/linux-mtd/2002-October/006218.html
fixes a problem with nand_write_page that could cause this. It is
not in the latest CVS version of nand.c.
Dave
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Write error on the nand flash !
2002-12-05 18:57 Dave Ellis
@ 2002-12-05 20:58 ` Thomas Gleixner
2002-12-05 13:37 ` shadow
0 siblings, 1 reply; 6+ messages in thread
From: Thomas Gleixner @ 2002-12-05 20:58 UTC (permalink / raw)
To: Dave Ellis, 'shadow'; +Cc: linux-mtd
On Thursday 05 December 2002 19:57, Dave Ellis wrote:
> My patch at
> http://lists.infradead.org/pipermail/linux-mtd/2002-October/006218.html
> fixes a problem with nand_write_page that could cause this. It is
> not in the latest CVS version of nand.c.
>
> Dave
Dave,
Thanx for remebering me. It got lost anyhow.
Fixed in CVS.
--
Thomas
____________________________________________________
linutronix - competence in embedded & realtime linux
http://www.linutronix.de
mail: tglx@linutronix.de
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2002-12-06 0:53 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2002-12-03 22:09 Write error on the nand flash ! shadow
2002-12-04 10:37 ` Thomas Gleixner
2002-12-04 15:27 ` shadow
-- strict thread matches above, loose matches on Subject: below --
2002-12-05 18:57 Dave Ellis
2002-12-05 20:58 ` Thomas Gleixner
2002-12-05 13:37 ` shadow
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