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* UBI: do not oops when erroneous PEB is scheduled for scrubbingArtem Bityutskiy2010-08-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When an erroneous PEB is scheduling for scrubbing, we end up with the following oops: [<c0162404>] (prot_queue_del+0x0/0x50) from [<c01635b4>] (ubi_wl_scrub_peb+0xec/0x13c) [<c01634c8>] (ubi_wl_scrub_peb+0x0/0x13c) from [<c01603bc>] (ubi_eba_read_leb+0x200/0x428) [<c01601bc>] (ubi_eba_read_leb+0x0/0x428) from [<c015e3c0>] (ubi_leb_read+0xe8/0x138) [<c015e2d8>] (ubi_leb_read+0x0/0x138) from [<c00d6918>] (ubifs_start_scan+0x7c/0xf4) [<c00d689c>] (ubifs_start_scan+0x0/0xf4) from [<c00e3650>] (ubifs_recover_leb+0x3c/0x730) [<c00e3614>] (ubifs_recover_leb+0x0/0x730) from [<c00e444c>] (ubifs_recover_log_leb+0xc8/0x2dc) [<c00e4384>] (ubifs_recover_log_leb+0x0/0x2dc) from [<c00d7c20>] (ubifs_replay_journal+0xb90/0x13a4) [<c00d7090>] (ubifs_replay_journal+0x0/0x13a4) from [<c00cdd68>] (ubifs_fill_super+0xb84/0x1054) [<c00cd1e4>] (ubifs_fill_super+0x0/0x1054) from [<c00ced04>] (ubifs_get_sb+0xc4/0x2ac) [<c00cec40>] (ubifs_get_sb+0x0/0x2ac) from [<c007f04c>] (vfs_kern_mount+0x58/0x94) [<c007eff4>] (vfs_kern_mount+0x0/0x94) from [<c007f0e8>] (do_kern_mount+0x40/0xe8) [<c007f0a8>] (do_kern_mount+0x0/0xe8) from [<c0095628>] (do_new_mount+0x68/0x8c) [<c00955c0>] (do_new_mount+0x0/0x8c) from [<c00957a8>] (do_mount+0x15c/0x1b8) [<c009564c>] (do_mount+0x0/0x1b8) from [<c0095890>] (sys_mount+0x8c/0xd4) [<c0095804>] (sys_mount+0x0/0xd4) from [<c0023c00>] (ret_fast_syscall+0x0/0x2c) Kernel panic - not syncing: Fatal exception The problem is that 'ubi_wl_scrub_peb()' does not expect that PEBs may be in the erroneous tree, which is a bug. This patch fixes the bug and adds corresponding check to 'ubi_wl_scrub_peb()'. Now it will simply ignore erroneous PEBs, instead of causing an oops. Reported-by: Matthieu CASTET <matthieu.castet@parrot.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBI: fix kconfig unmet dependencyRandy Dunlap2010-08-30
| | | | | | | | | | | | warning: (OPTPROBES && KPROBES && HAVE_OPTPROBES && !PREEMPT && DEBUG_KERNEL || MTD_UBI_DEBUG && MTD && SYSFS && MTD_UBI || UBIFS_FS_DEBUG && MISC_FILESYSTEMS && UBIFS_FS || LOCKDEP && DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT || LATENCYTOP && HAVE_LATENCYTOP_SUPPORT && DEBUG_KERNEL && STACKTRACE_SUPPORT && PROC_FS) selects KALLSYMS_ALL which has unmet direct dependencies (DEBUG_KERNEL && KALLSYMS) Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBI: fix forward compatibilityArtem Bityutskiy2010-08-30
| | | | | | | | | | | | Commit 0798cea8c2e1afee59686c51d27d0e96b05e42d1 "UBI: improve corrupted flash handling" broke delet-compatible volumes handling - it introduced a limit of 8 eraseblocks which may be corrupted. And delete-compatible eraseblocks are added to the "corrupted" list, so if we'd have a large delete-compatible volume, UBI would refuse it. The fix is to add delete-compatible volumes to the erase list instead. Indeed, they are corrupted, we just have to erase them. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBI: eliminate update of list_for_each_entry loop cursorJulia Lawall2010-08-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | list_for_each_entry uses its first argument to move from one element to the next, so modifying it can break the iteration. The variable re1 is already used within the loop as a temporary variable, and is not live here. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ iterator name list_for_each_entry; expression x,E; position p1,p2; @@ list_for_each_entry@p1(x,...) { <... x =@p2 E ...> } @@ expression x,E; position r.p1,r.p2; statement S; @@ *x =@p2 E ... list_for_each_entry@p1(x,...) S // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2010-08-21
|\ | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: mtd: nand: Fix probe of Samsung NAND chips mtd: nand: Fix regression in BBM detection pxa3xx: fix ns2cycle equation
| * mtd: nand: Fix probe of Samsung NAND chipsTilman Sauerbeck2010-08-20
| | | | | | | | | | | | | | | | | | | | | | | | | | Apparently, the check for a 6-byte ID string introduced by commit 426c457a3216fac74e3d44dd39729b0689f4c7ab ("mtd: nand: extend NAND flash detection to new MLC chips") is NOT sufficient to determine whether or not a Samsung chip uses their new MLC detection scheme or the old, standard scheme. This adds a condition to check cell type. Signed-off-by: Tilman Sauerbeck <tilman@code-monkey.de> Signed-off-by: Brian Norris <norris@broadcom.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
| * mtd: nand: Fix regression in BBM detectionBrian Norris2010-08-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit c7b28e25cb9beb943aead770ff14551b55fa8c79 ("mtd: nand: refactor BB marker detection") caused a regression in detection of factory-set bad block markers, especially for certain small-page NAND. This fix removes some unneeded constraints on using NAND_SMALL_BADBLOCK_POS, making the detection code more correct. This regression can be seen, for example, in Hynix HY27US081G1M and similar. Signed-off-by: Brian Norris <norris@broadcom.com> Tested-by: Michael Guntsche <mike@it-loops.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * pxa3xx: fix ns2cycle equationAxel Lin2010-08-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Test on a PXA310 platform with Samsung K9F2G08X0B NAND flash, with tCH=5 and clk is 156MHz, ns2cycle(5, 156000000) returns -1. ns2cycle returns negtive value will break NDTR0_tXX macros. After checking the commit log, I found the problem is introduced by commit 5b0d4d7c8a67c5ba3d35e6ceb0c5530cc6846db7 "[MTD] [NAND] pxa3xx: convert from ns to clock ticks more accurately" To get num of clock cycles, we use below equation: num of clock cycles = time (ns) / one clock cycle (ns) + 1 We need to add 1 cycle here because integer division will truncate the result. It is possible the developers set the Min values in SPEC for timing settings. Thus the truncate may cause problem, and it is safe to add an extra cycle here. The various fields in NDTR{01} are in units of clock ticks minus one, thus we should subtract 1 cycle then. Thus the correct equation should be: num of clock cycles = time (ns) / one clock cycle (ns) + 1 - 1 = time (ns) / one clock cycle (ns) Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Lei Wen <leiwen@marvell.com> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
* | of: fix missing headers for of_address_to_resource() in MTD and SysACE driversGraeme Smecher2010-08-17
|/ | | | | | | | | The drivers for Xilinx' SystemACE and physically mapped MTDs were missing prototypes for of_address_to_resource(). This patch adds the necessary headers. Signed-off-by: Graeme Smecher <graeme.smecher@mail.mcgill.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2010-08-15
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: mtd/nand_ids: Fix buswidth mtd/m25p80: fix test for end of loop mtd/m25p80: retlen is never NULL MIPS: Fix gen_nand probe structures contents gen_nand: Test if nr_chips field is valid BFIN: Fix gen_nand probe structures contents nand/denali: move all hardware initialization work to denali_hw_init nand/denali: Add a page check in denali_read_page & denali_read_page_raw nand/denali: use cpu_relax() while waiting for hardware interrupt nand/denali: change read_status function method nand/denali: Fixed check patch warnings ARM: Fix gen_nand probe structures contents mtd/nand_base: fix kernel-doc warnings & typos nand/denali: use dev_xx debug function to replace nand_dbg_print and some printk nand/denali: Fixed handle ECC error bugs nand/denali: use iowrite32() to replace denali_write32() nand/denali: Fixed probe function bugs
| * mtd/nand_ids: Fix buswidthBrian Norris2010-08-13
| | | | | | | | | | | | | | | | The buswidth for chips of ID 0xD7 is x8, not x16. This was my previous typo. Signed-off-by: Brian Norris <norris@broadcom.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd/m25p80: fix test for end of loopDan Carpenter2010-08-12
| | | | | | | | | | | | | | | | | | | | | | | | "plat_id" is always non-NULL here. There is a zero element on the end of the m25p_ids[] array and if we hit the end of the loop then plat_id points to that. This would lead to a NULL pointer dereference later on in the function. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd/m25p80: retlen is never NULLDan Carpenter2010-08-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is just a cleanup, it doesn't fix any bugs. These functions all check retlen inconsistently and it generates a warning in Smatch (http://smatch.sf.net). If retlen were ever NULL it would cause an oops and the code has been this way since 2006 so someone would have complained. Also I looked at other places that implemented the mtd read and write functions and they dereference retlen without checking. I removed the checks. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * gen_nand: Test if nr_chips field is validMarek Vasut2010-08-12
| | | | | | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: move all hardware initialization work to denali_hw_initChuanxiao Dong2010-08-12
| | | | | | | | | | | | | | | | | | | | All hardware initialization will be done in denali_hw_init before irq handler registered Change mtd name from "DENALI NAND" to be "denali-nand" since whitespace in name can cause problems if we use cmdlinepart Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: Add a page check in denali_read_page & denali_read_page_rawChuanxiao Dong2010-08-12
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: use cpu_relax() while waiting for hardware interruptChuanxiao Dong2010-08-12
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: change read_status function methodChuanxiao Dong2010-08-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In mtd->write, Denali controller will use MODE_11 mode to read NAND flash status, then return back to MODE_1O mode to do page write. Here comes a bug for this kind of using, sometimes controller will not write data to NAND and just return a good interrupt to tell driver writing work is done. The data in this page is all 0xff and this page can not be written again. The reason is unknow. So read Denali controller register WRITE_PROTECT to get NAND status instead. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: Fixed check patch warningsChuanxiao Dong2010-08-12
| | | | | | | | | | | | | | waring: no space for starting a line Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd/nand_base: fix kernel-doc warnings & typosRandy Dunlap2010-08-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix mtd/nand_base.c kernel-doc warnings and typos. Warning(drivers/mtd/nand/nand_base.c:893): No description found for parameter 'mtd' Warning(drivers/mtd/nand/nand_base.c:893): No description found for parameter 'ofs' Warning(drivers/mtd/nand/nand_base.c:893): No description found for parameter 'len' Warning(drivers/mtd/nand/nand_base.c:893): No description found for parameter 'invert' Warning(drivers/mtd/nand/nand_base.c:930): No description found for parameter 'mtd' Warning(drivers/mtd/nand/nand_base.c:930): No description found for parameter 'ofs' Warning(drivers/mtd/nand/nand_base.c:930): No description found for parameter 'len' Warning(drivers/mtd/nand/nand_base.c:987): No description found for parameter 'mtd' Warning(drivers/mtd/nand/nand_base.c:987): No description found for parameter 'ofs' Warning(drivers/mtd/nand/nand_base.c:987): No description found for parameter 'len' Warning(drivers/mtd/nand/nand_base.c:2087): No description found for parameter 'len' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: use dev_xx debug function to replace nand_dbg_print and some printkChuanxiao Dong2010-08-10
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: Fixed handle ECC error bugsChuanxiao Dong2010-08-10
| | | | | | | | | | | | | | | | | | Once the last ECC error was handled, controller will triger an interrupt. If this interrupt can not be clean on time, controller may corrupt. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: use iowrite32() to replace denali_write32()Chuanxiao Dong2010-08-10
| | | | | | | | | | | | | | | | denali_write32() just implements a debug function for iowrite32(), only print out the write value. Remove this function since it's useless Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali: Fixed probe function bugsChuanxiao Dong2010-08-10
| | | | | | | | | | | | | | | | Fixed a pci_resource_len function error; Changed returning sequence of probe function; Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | Merge branch 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds2010-08-12
|\ \ | | | | | | | | | | | | | | | | | | * 'next-devicetree' of git://git.secretlab.ca/git/linux-2.6: mmc_spi: Fix unterminated of_match_table of/sparc: fix build regression from of_device changes of/device: Replace struct of_device with struct platform_device
| * | of/device: Replace struct of_device with struct platform_deviceGrant Likely2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | of_device is just an alias for platform_device, so remove it entirely. Also replace to_of_device() with to_platform_device() and update comment blocks. This patch was initially generated from the following semantic patch, and then edited by hand to pick up the bits that coccinelle didn't catch. @@ @@ -struct of_device +struct platform_device Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Reviewed-by: David S. Miller <davem@davemloft.net>
* | | mtd/nand_base: fix kernel-doc warnings & typosRandy Dunlap2010-08-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix mtd/nand_base.c kernel-doc warnings and typos. Warning(drivers/mtd/nand/nand_base.c:893): No description found for parameter 'mtd' Warning(drivers/mtd/nand/nand_base.c:893): No description found for parameter 'ofs' Warning(drivers/mtd/nand/nand_base.c:893): No description found for parameter 'len' Warning(drivers/mtd/nand/nand_base.c:893): No description found for parameter 'invert' Warning(drivers/mtd/nand/nand_base.c:930): No description found for parameter 'mtd' Warning(drivers/mtd/nand/nand_base.c:930): No description found for parameter 'ofs' Warning(drivers/mtd/nand/nand_base.c:930): No description found for parameter 'len' Warning(drivers/mtd/nand/nand_base.c:987): No description found for parameter 'mtd' Warning(drivers/mtd/nand/nand_base.c:987): No description found for parameter 'ofs' Warning(drivers/mtd/nand/nand_base.c:987): No description found for parameter 'len' Warning(drivers/mtd/nand/nand_base.c:2087): No description found for parameter 'len' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2010-08-10
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block: (149 commits) block: make sure that REQ_* types are seen even with CONFIG_BLOCK=n xen-blkfront: fix missing out label blkdev: fix blkdev_issue_zeroout return value block: update request stacking methods to support discards block: fix missing export of blk_types.h writeback: fix bad _bh spinlock nesting drbd: revert "delay probes", feature is being re-implemented differently drbd: Initialize all members of sync_conf to their defaults [Bugz 315] drbd: Disable delay probes for the upcomming release writeback: cleanup bdi_register writeback: add new tracepoints writeback: remove unnecessary init_timer call writeback: optimize periodic bdi thread wakeups writeback: prevent unnecessary bdi threads wakeups writeback: move bdi threads exiting logic to the forker thread writeback: restructure bdi forker loop a little writeback: move last_active to bdi writeback: do not remove bdi from bdi_list writeback: simplify bdi code a little writeback: do not lose wake-ups in bdi threads ... Fixed up pretty trivial conflicts in drivers/block/virtio_blk.c and drivers/scsi/scsi_error.c as per Jens.
| * | block: push down BKL into .open and .releaseArnd Bergmann2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The open and release block_device_operations are currently called with the BKL held. In order to change that, we must first make sure that all drivers that currently rely on this have no regressions. This blindly pushes the BKL into all .open and .release operations for all block drivers to prepare for the next step. The drivers can subsequently replace the BKL with their own locks or remove it completely when it can be shown that it is not needed. The functions blkdev_get and blkdev_put are the only remaining users of the big kernel lock in the block layer, besides a few uses in the ioctl code, none of which need to serialize with blkdev_{get,put}. Most of these two functions is also under the protection of bdev->bd_mutex, including the actual calls to ->open and ->release, and the common code does not access any global data structures that need the BKL. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * | block: push down BKL into .locked_ioctlArnd Bergmann2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As a preparation for the removal of the big kernel lock in the block layer, this removes the BKL from the common ioctl handling code, moving it into every single driver still using it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * | block: remove wrappers for request type/flagsChristoph Hellwig2010-08-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove all the trivial wrappers for the cmd_type and cmd_flags fields in struct requests. This allows much easier grepping for different request types instead of unwinding through macros. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* | | Merge git://git.infradead.org/mtd-2.6Linus Torvalds2010-08-10
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (79 commits) mtd: Remove obsolete <mtd/compatmac.h> include mtd: Update copyright notices jffs2: Update copyright notices mtd-physmap: add support users can assign the probe type in board files mtd: remove redwood map driver mxc_nand: Add v3 (i.MX51) Support mxc_nand: support 8bit ecc mxc_nand: fix correct_data function mxc_nand: add V1_V2 namespace to registers mxc_nand: factor out a check_int function mxc_nand: make some internally used functions overwriteable mxc_nand: rework get_dev_status mxc_nand: remove 0xe00 offset from registers mtd: denali: Add multi connected NAND support mtd: denali: Remove set_ecc_config function mtd: denali: Remove unuseful code in get_xx_nand_para functions mtd: denali: Remove device_info_tag structure mtd: m25p80: add support for the Winbond W25Q32 SPI flash chip mtd: m25p80: add support for the Intel/Numonyx {16,32,64}0S33B SPI flash chips mtd: m25p80: add support for the EON EN25P{32, 64} SPI flash chips ... Fix up trivial conflicts in drivers/mtd/maps/{Kconfig,redwood.c} due to redwood driver removal.
| * | | mtd: Remove obsolete <mtd/compatmac.h> includeDavid Woodhouse2010-08-08
| | | | | | | | | | | | | | | | Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mtd: Update copyright noticesDavid Woodhouse2010-08-08
| | | | | | | | | | | | | | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * | | mtd-physmap: add support users can assign the probe type in board filesBarry Song2010-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are three reasons to add this support: 1. users probably know the interface type of their flashs, then probe can be faster if they give the right type in platform data since wrong types will not be detected. 2. sometimes, detecting can cause destory to system. For example, for kernel XIP, detecting can cause NOR enter a mode instructions can not be fetched right, which will make kernel crash. 3. For a new probe which is not listed in the rom_probe_types, if users assign it in board files, physmap can still probe it. Signed-off-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mtd: remove redwood map driverChristian Dietrich2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removing the redwood mtd mapping driver, because all REDWOOD_[456] configuration options were removed from the kernel, because they weren't referenced anywhere. Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mxc_nand: Add v3 (i.MX51) SupportSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mxc_nand: support 8bit eccSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nand devices with at least 26 bytes of oob data per 512 byte block can have 8bit ecc on v2 type controllers. This is currently not tested, but at least this patch puts the ECC_MODE bit into a well defined state. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mxc_nand: fix correct_data functionSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The v2 controller has a totally different mechanism to check whether the data we read had ecc errors or not. Implement this. The mechanism in the v2 controller happens to be identical to the v3 controller. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mxc_nand: add V1_V2 namespace to registersSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This prepares the driver for v3 support. The v3 controller has a completely different register layout, so add a V1_V2_ namespace to the register defines to avoid confusion with the v3 regs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mxc_nand: factor out a check_int functionSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mxc_nand: make some internally used functions overwriteableSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch prepares the driver to add v3 controller support later. The v3 controller is basically the same controller as v1 and v2, but with a completely different register layout. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mxc_nand: rework get_dev_statusSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We save/restore the value in the buffer anyway, so it makes no difference whether we use main_area0 or main_area1. So, we can use main_area0 and remove main_area1 from the driver which is otherwise unused. Also, clean up the comments in get_dev_status. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mxc_nand: remove 0xe00 offset from registersSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the offset to the register base instead. This is done in preparation for v3 controller support. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mtd: denali: Add multi connected NAND supportChuanxiao Dong2010-08-06
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mtd: denali: Remove set_ecc_config functionChuanxiao Dong2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | set_ecc_config function only set ECC_CORRECTION register, so move register setting to probe function. Since controller only support 15bit and 8bit ecc correction, updated nand ecc layout information. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mtd: denali: Remove unuseful code in get_xx_nand_para functionsChuanxiao Dong2010-08-06
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mtd: denali: Remove device_info_tag structureChuanxiao.Dong2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hi David, I sent 4 patches using my intel email account. If there is any problem about the format of these patches, I will resend them after I arrived at home by using my gmail account, and I will keep on using gmail account to send patches. Thanks. >From 242e3bf5e17f54b1df8cf285154a7c7a61ff62e9 Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong <chuanxiao.dong@intel.com> Date: Fri, 6 Aug 2010 15:29:41 +0800 Subject: [PATCH 1/4] mtd: denali: Remove device_info_tag structure. Most of the variables in this structure are useless, so just remove this structure and relevant codes. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | mtd: m25p80: add support for the Winbond W25Q32 SPI flash chipGabor Juhos2010-08-06
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * | | mtd: m25p80: add support for the Intel/Numonyx {16,32,64}0S33B SPI flash chipsGabor Juhos2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-18 02:33:20 -0500