mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-26 02:34:16 +02:00
[kernel] generic/2.6.28: fix yaffs cvs patch
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14261 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
agb
parent
279715ca10
commit
cf68954004
@ -748,443 +748,6 @@
|
||||
-yaffs-y += yaffs_mtdif1.o yaffs_packedtags1.o
|
||||
-yaffs-y += yaffs_mtdif.o yaffs_mtdif2.o
|
||||
+yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
|
||||
--- a/fs/yaffs2/yaffs_mtdif1-compat.c
|
||||
+++ /dev/null
|
||||
@@ -1,434 +0,0 @@
|
||||
-From ian@brightstareng.com Fri May 18 15:06:49 2007
|
||||
-From ian@brightstareng.com Fri May 18 15:08:21 2007
|
||||
-Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com)
|
||||
- by apollo.linkchoose.co.uk with esmtp (Exim 4.60)
|
||||
- (envelope-from <ian@brightstareng.com>)
|
||||
- id 1Hp380-00011e-T6
|
||||
- for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100
|
||||
-Received: from localhost (localhost.localdomain [127.0.0.1])
|
||||
- by zebra.brightstareng.com (Postfix) with ESMTP
|
||||
- id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT)
|
||||
-Received: from zebra.brightstareng.com ([127.0.0.1])
|
||||
- by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP
|
||||
- id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT)
|
||||
-Received: from pippin (unknown [192.168.1.25])
|
||||
- by zebra.brightstareng.com (Postfix) with ESMTP
|
||||
- id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT)
|
||||
-From: Ian McDonnell <ian@brightstareng.com>
|
||||
-To: David Goodenough <david.goodenough@linkchoose.co.uk>
|
||||
-Subject: Re: something tested this time -- yaffs_mtdif1-compat.c
|
||||
-Date: Fri, 18 May 2007 10:06:49 -0400
|
||||
-User-Agent: KMail/1.9.1
|
||||
-References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk>
|
||||
-In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk>
|
||||
-Cc: Andrea Conti <alyf@alyf.net>,
|
||||
- Charles Manning <manningc2@actrix.gen.nz>
|
||||
-MIME-Version: 1.0
|
||||
-Content-Type: Multipart/Mixed;
|
||||
- boundary="Boundary-00=_5LbTGmt62YoutxM"
|
||||
-Message-Id: <200705181006.49860.ian@brightstareng.com>
|
||||
-X-Virus-Scanned: by amavisd-new at brightstareng.com
|
||||
-Status: R
|
||||
-X-Status: NT
|
||||
-X-KMail-EncryptionState:
|
||||
-X-KMail-SignatureState:
|
||||
-X-KMail-MDN-Sent:
|
||||
-
|
||||
---Boundary-00=_5LbTGmt62YoutxM
|
||||
-Content-Type: text/plain;
|
||||
- charset="iso-8859-15"
|
||||
-Content-Transfer-Encoding: 7bit
|
||||
-Content-Disposition: inline
|
||||
-
|
||||
-David, Andrea,
|
||||
-
|
||||
-On Friday 18 May 2007 08:34, you wrote:
|
||||
-> Yea team. With this fix in place (I put it in the wrong place
|
||||
-> at first) I can now mount and ls the Yaffs partition without
|
||||
-> an error messages!
|
||||
-
|
||||
-Good news!
|
||||
-
|
||||
-Attached is a newer yaffs_mtdif1.c with a bandaid to help the
|
||||
-2.6.18 and 2.6.19 versions of MTD not trip on the oob read.
|
||||
-See the LINUX_VERSION_CODE conditional in
|
||||
-nandmtd1_ReadChunkWithTagsFromNAND.
|
||||
-
|
||||
--imcd
|
||||
-
|
||||
---Boundary-00=_5LbTGmt62YoutxM
|
||||
-Content-Type: text/x-csrc;
|
||||
- charset="iso-8859-15";
|
||||
- name="yaffs_mtdif1.c"
|
||||
-Content-Transfer-Encoding: 7bit
|
||||
-Content-Disposition: attachment;
|
||||
- filename="yaffs_mtdif1.c"
|
||||
-
|
||||
-/*
|
||||
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
|
||||
- * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND.
|
||||
- *
|
||||
- * Copyright (C) 2002 Aleph One Ltd.
|
||||
- * for Toby Churchill Ltd and Brightstar Engineering
|
||||
- *
|
||||
- * 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.
|
||||
- */
|
||||
-
|
||||
-/*
|
||||
- * This module provides the interface between yaffs_nand.c and the
|
||||
- * MTD API. This version is used when the MTD interface supports the
|
||||
- * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17,
|
||||
- * and we have small-page NAND device.
|
||||
- *
|
||||
- * These functions are invoked via function pointers in yaffs_nand.c.
|
||||
- * This replaces functionality provided by functions in yaffs_mtdif.c
|
||||
- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are
|
||||
- * called in yaffs_mtdif.c when the function pointers are NULL.
|
||||
- * We assume the MTD layer is performing ECC (useNANDECC is true).
|
||||
- */
|
||||
-
|
||||
-#include "yportenv.h"
|
||||
-#include "yaffs_guts.h"
|
||||
-#include "yaffs_packedtags1.h"
|
||||
-#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC
|
||||
-
|
||||
-#include "linux/kernel.h"
|
||||
-#include "linux/version.h"
|
||||
-#include "linux/types.h"
|
||||
-#include "linux/mtd/mtd.h"
|
||||
-
|
||||
-/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
|
||||
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
|
||||
-
|
||||
-const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1-compat.c 13022 2008-10-22 06:51:06Z nbd $";
|
||||
-
|
||||
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
|
||||
-# define YTAG1_SIZE 8
|
||||
-#else
|
||||
-# define YTAG1_SIZE 9
|
||||
-#endif
|
||||
-
|
||||
-#if 0
|
||||
-/* Use the following nand_ecclayout with MTD when using
|
||||
- * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout.
|
||||
- * If you have existing Yaffs images and the byte order differs from this,
|
||||
- * adjust 'oobfree' to match your existing Yaffs data.
|
||||
- *
|
||||
- * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
|
||||
- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to
|
||||
- * the 9th byte.
|
||||
- *
|
||||
- * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
|
||||
- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P
|
||||
- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus
|
||||
- * byte and B is the small-page bad-block indicator byte.
|
||||
- */
|
||||
-static struct nand_ecclayout nand_oob_16 = {
|
||||
- .eccbytes = 6,
|
||||
- .eccpos = { 8, 9, 10, 13, 14, 15 },
|
||||
- .oobavail = 9,
|
||||
- .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
|
||||
-};
|
||||
-#endif
|
||||
-
|
||||
-/* Write a chunk (page) of data to NAND.
|
||||
- *
|
||||
- * Caller always provides ExtendedTags data which are converted to a more
|
||||
- * compact (packed) form for storage in NAND. A mini-ECC runs over the
|
||||
- * contents of the tags meta-data; used to valid the tags when read.
|
||||
- *
|
||||
- * - Pack ExtendedTags to PackedTags1 form
|
||||
- * - Compute mini-ECC for PackedTags1
|
||||
- * - Write data and packed tags to NAND.
|
||||
- *
|
||||
- * Note: Due to the use of the PackedTags1 meta-data which does not include
|
||||
- * a full sequence number (as found in the larger PackedTags2 form) it is
|
||||
- * necessary for Yaffs to re-write a chunk/page (just once) to mark it as
|
||||
- * discarded and dirty. This is not ideal: newer NAND parts are supposed
|
||||
- * to be written just once. When Yaffs performs this operation, this
|
||||
- * function is called with a NULL data pointer -- calling MTD write_oob
|
||||
- * without data is valid usage (2.6.17).
|
||||
- *
|
||||
- * Any underlying MTD error results in YAFFS_FAIL.
|
||||
- * Returns YAFFS_OK or YAFFS_FAIL.
|
||||
- */
|
||||
-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
|
||||
- int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
|
||||
-{
|
||||
- struct mtd_info * mtd = dev->genericDevice;
|
||||
- int chunkBytes = dev->nDataBytesPerChunk;
|
||||
- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
|
||||
- struct mtd_oob_ops ops;
|
||||
- yaffs_PackedTags1 pt1;
|
||||
- int retval;
|
||||
-
|
||||
- /* we assume that PackedTags1 and yaffs_Tags are compatible */
|
||||
- compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
|
||||
- compile_time_assertion(sizeof(yaffs_Tags) == 8);
|
||||
-
|
||||
- yaffs_PackTags1(&pt1, etags);
|
||||
- yaffs_CalcTagsECC((yaffs_Tags *)&pt1);
|
||||
-
|
||||
- /* When deleting a chunk, the upper layer provides only skeletal
|
||||
- * etags, one with chunkDeleted set. However, we need to update the
|
||||
- * tags, not erase them completely. So we use the NAND write property
|
||||
- * that only zeroed-bits stick and set tag bytes to all-ones and
|
||||
- * zero just the (not) deleted bit.
|
||||
- */
|
||||
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
|
||||
- if (etags->chunkDeleted) {
|
||||
- memset(&pt1, 0xff, 8);
|
||||
- /* clear delete status bit to indicate deleted */
|
||||
- pt1.deleted = 0;
|
||||
- }
|
||||
-#else
|
||||
- ((__u8 *)&pt1)[8] = 0xff;
|
||||
- if (etags->chunkDeleted) {
|
||||
- memset(&pt1, 0xff, 8);
|
||||
- /* zero pageStatus byte to indicate deleted */
|
||||
- ((__u8 *)&pt1)[8] = 0;
|
||||
- }
|
||||
-#endif
|
||||
-
|
||||
- memset(&ops, 0, sizeof(ops));
|
||||
- ops.mode = MTD_OOB_AUTO;
|
||||
- ops.len = (data) ? chunkBytes : 0;
|
||||
- ops.ooblen = YTAG1_SIZE;
|
||||
- ops.datbuf = (__u8 *)data;
|
||||
- ops.oobbuf = (__u8 *)&pt1;
|
||||
-
|
||||
- retval = mtd->write_oob(mtd, addr, &ops);
|
||||
- if (retval) {
|
||||
- yaffs_trace(YAFFS_TRACE_MTD,
|
||||
- "write_oob failed, chunk %d, mtd error %d\n",
|
||||
- chunkInNAND, retval);
|
||||
- }
|
||||
- return retval ? YAFFS_FAIL : YAFFS_OK;
|
||||
-}
|
||||
-
|
||||
-/* Return with empty ExtendedTags but add eccResult.
|
||||
- */
|
||||
-static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
|
||||
-{
|
||||
- if (etags) {
|
||||
- memset(etags, 0, sizeof(*etags));
|
||||
- etags->eccResult = eccResult;
|
||||
- }
|
||||
- return retval;
|
||||
-}
|
||||
-
|
||||
-/* Read a chunk (page) from NAND.
|
||||
- *
|
||||
- * Caller expects ExtendedTags data to be usable even on error; that is,
|
||||
- * all members except eccResult and blockBad are zeroed.
|
||||
- *
|
||||
- * - Check ECC results for data (if applicable)
|
||||
- * - Check for blank/erased block (return empty ExtendedTags if blank)
|
||||
- * - Check the PackedTags1 mini-ECC (correct if necessary/possible)
|
||||
- * - Convert PackedTags1 to ExtendedTags
|
||||
- * - Update eccResult and blockBad members to refect state.
|
||||
- *
|
||||
- * Returns YAFFS_OK or YAFFS_FAIL.
|
||||
- */
|
||||
-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
|
||||
- int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
|
||||
-{
|
||||
- struct mtd_info * mtd = dev->genericDevice;
|
||||
- int chunkBytes = dev->nDataBytesPerChunk;
|
||||
- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
|
||||
- int eccres = YAFFS_ECC_RESULT_NO_ERROR;
|
||||
- struct mtd_oob_ops ops;
|
||||
- yaffs_PackedTags1 pt1;
|
||||
- int retval;
|
||||
- int deleted;
|
||||
-
|
||||
- memset(&ops, 0, sizeof(ops));
|
||||
- ops.mode = MTD_OOB_AUTO;
|
||||
- ops.len = (data) ? chunkBytes : 0;
|
||||
- ops.ooblen = YTAG1_SIZE;
|
||||
- ops.datbuf = data;
|
||||
- ops.oobbuf = (__u8 *)&pt1;
|
||||
-
|
||||
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
|
||||
- /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
|
||||
- * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
|
||||
- */
|
||||
- ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
|
||||
-#endif
|
||||
- /* Read page and oob using MTD.
|
||||
- * Check status and determine ECC result.
|
||||
- */
|
||||
- retval = mtd->read_oob(mtd, addr, &ops);
|
||||
- if (retval) {
|
||||
- yaffs_trace(YAFFS_TRACE_MTD,
|
||||
- "read_oob failed, chunk %d, mtd error %d\n",
|
||||
- chunkInNAND, retval);
|
||||
- }
|
||||
-
|
||||
- switch (retval) {
|
||||
- case 0:
|
||||
- /* no error */
|
||||
- break;
|
||||
-
|
||||
- case -EUCLEAN:
|
||||
- /* MTD's ECC fixed the data */
|
||||
- eccres = YAFFS_ECC_RESULT_FIXED;
|
||||
- dev->eccFixed++;
|
||||
- break;
|
||||
-
|
||||
- case -EBADMSG:
|
||||
- /* MTD's ECC could not fix the data */
|
||||
- dev->eccUnfixed++;
|
||||
- /* fall into... */
|
||||
- default:
|
||||
- rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
|
||||
- etags->blockBad = (mtd->block_isbad)(mtd, addr);
|
||||
- return YAFFS_FAIL;
|
||||
- }
|
||||
-
|
||||
- /* Check for a blank/erased chunk.
|
||||
- */
|
||||
- if (yaffs_CheckFF((__u8 *)&pt1, 8)) {
|
||||
- /* when blank, upper layers want eccResult to be <= NO_ERROR */
|
||||
- return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
|
||||
- }
|
||||
-
|
||||
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
|
||||
- /* Read deleted status (bit) then return it to it's non-deleted
|
||||
- * state before performing tags mini-ECC check. pt1.deleted is
|
||||
- * inverted.
|
||||
- */
|
||||
- deleted = !pt1.deleted;
|
||||
- pt1.deleted = 1;
|
||||
-#else
|
||||
- (void) deleted; /* not used */
|
||||
-#endif
|
||||
-
|
||||
- /* Check the packed tags mini-ECC and correct if necessary/possible.
|
||||
- */
|
||||
- retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1);
|
||||
- switch (retval) {
|
||||
- case 0:
|
||||
- /* no tags error, use MTD result */
|
||||
- break;
|
||||
- case 1:
|
||||
- /* recovered tags-ECC error */
|
||||
- dev->tagsEccFixed++;
|
||||
- eccres = YAFFS_ECC_RESULT_FIXED;
|
||||
- break;
|
||||
- default:
|
||||
- /* unrecovered tags-ECC error */
|
||||
- dev->tagsEccUnfixed++;
|
||||
- return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
|
||||
- }
|
||||
-
|
||||
- /* Unpack the tags to extended form and set ECC result.
|
||||
- * [set shouldBeFF just to keep yaffs_UnpackTags1 happy]
|
||||
- */
|
||||
- pt1.shouldBeFF = 0xFFFFFFFF;
|
||||
- yaffs_UnpackTags1(etags, &pt1);
|
||||
- etags->eccResult = eccres;
|
||||
-
|
||||
- /* Set deleted state.
|
||||
- */
|
||||
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
|
||||
- etags->chunkDeleted = deleted;
|
||||
-#else
|
||||
- etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
|
||||
-#endif
|
||||
- return YAFFS_OK;
|
||||
-}
|
||||
-
|
||||
-/* Mark a block bad.
|
||||
- *
|
||||
- * This is a persistant state.
|
||||
- * Use of this function should be rare.
|
||||
- *
|
||||
- * Returns YAFFS_OK or YAFFS_FAIL.
|
||||
- */
|
||||
-int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
|
||||
-{
|
||||
- struct mtd_info * mtd = dev->genericDevice;
|
||||
- int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
|
||||
- int retval;
|
||||
-
|
||||
- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
|
||||
-
|
||||
- retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
|
||||
- return (retval) ? YAFFS_FAIL : YAFFS_OK;
|
||||
-}
|
||||
-
|
||||
-/* Check any MTD prerequists.
|
||||
- *
|
||||
- * Returns YAFFS_OK or YAFFS_FAIL.
|
||||
- */
|
||||
-static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
|
||||
-{
|
||||
- /* 2.6.18 has mtd->ecclayout->oobavail */
|
||||
- /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
|
||||
- int oobavail = mtd->ecclayout->oobavail;
|
||||
-
|
||||
- if (oobavail < YTAG1_SIZE) {
|
||||
- yaffs_trace(YAFFS_TRACE_ERROR,
|
||||
- "mtd device has only %d bytes for tags, need %d",
|
||||
- oobavail, YTAG1_SIZE);
|
||||
- return YAFFS_FAIL;
|
||||
- }
|
||||
- return YAFFS_OK;
|
||||
-}
|
||||
-
|
||||
-/* Query for the current state of a specific block.
|
||||
- *
|
||||
- * Examine the tags of the first chunk of the block and return the state:
|
||||
- * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad
|
||||
- * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use
|
||||
- * - YAFFS_BLOCK_STATE_EMPTY, the block is clean
|
||||
- *
|
||||
- * Always returns YAFFS_OK.
|
||||
- */
|
||||
-int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
|
||||
- yaffs_BlockState * pState, int *pSequenceNumber)
|
||||
-{
|
||||
- struct mtd_info * mtd = dev->genericDevice;
|
||||
- int chunkNo = blockNo * dev->nChunksPerBlock;
|
||||
- yaffs_ExtendedTags etags;
|
||||
- int state = YAFFS_BLOCK_STATE_DEAD;
|
||||
- int seqnum = 0;
|
||||
- int retval;
|
||||
-
|
||||
- /* We don't yet have a good place to test for MTD config prerequists.
|
||||
- * Do it here as we are called during the initial scan.
|
||||
- */
|
||||
- if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
|
||||
- return YAFFS_FAIL;
|
||||
- }
|
||||
-
|
||||
- retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
|
||||
- if (etags.blockBad) {
|
||||
- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
|
||||
- "block %d is marked bad", blockNo);
|
||||
- state = YAFFS_BLOCK_STATE_DEAD;
|
||||
- }
|
||||
- else if (etags.chunkUsed) {
|
||||
- state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
|
||||
- seqnum = etags.sequenceNumber;
|
||||
- }
|
||||
- else {
|
||||
- state = YAFFS_BLOCK_STATE_EMPTY;
|
||||
- }
|
||||
-
|
||||
- *pState = state;
|
||||
- *pSequenceNumber = seqnum;
|
||||
-
|
||||
- /* query always succeeds */
|
||||
- return YAFFS_OK;
|
||||
-}
|
||||
-
|
||||
-#endif /*KERNEL_VERSION*/
|
||||
-
|
||||
---Boundary-00=_5LbTGmt62YoutxM--
|
||||
-
|
||||
-
|
||||
-
|
||||
--- a/fs/yaffs2/yaffs_fs.c
|
||||
+++ b/fs/yaffs2/yaffs_fs.c
|
||||
@@ -32,7 +32,7 @@
|
||||
|
||||
Loading…
Reference in New Issue
Block a user