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comparison yaffs_mtdif1.c @ 409:b5309c9b6d7f

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yaffs Some cleanups. Update copyright messages. Clean up tracing to use TSTR and KERN_DEBUG. Remove cvs $Id. Change /proc/yaffs_debug to /proc/yaffs_stats. ... and a few other clean ups. Signed-off-by: Charles Manning <cdhmanning@gmail.com>
author Charles Manning <cdhmanning@gmail.com>
date Tue, 20 Apr 2010 17:12:46 +1200
parents 7ee0cc4ba753
children
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408:fc1d08b30cc0 409:b5309c9b6d7f
1 /* 1 /*
2 * YAFFS: Yet another FFS. A NAND-flash specific file system. 2 * YAFFS: Yet another FFS. A NAND-flash specific file system.
3 * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. 3 * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND.
4 * 4 *
5 * Copyright (C) 2002 Aleph One Ltd. 5 * Copyright (C) 2002-2010 Aleph One Ltd.
6 * for Toby Churchill Ltd and Brightstar Engineering 6 * for Toby Churchill Ltd and Brightstar Engineering
7 * 7 *
8 * This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as 9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation. 10 * published by the Free Software Foundation.
35 #include "linux/types.h" 35 #include "linux/types.h"
36 #include "linux/mtd/mtd.h" 36 #include "linux/mtd/mtd.h"
37 37
38 /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ 38 /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
39 #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17)) 39 #if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
40
41 const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.13 2010-02-18 01:18:04 charles Exp $";
42 40
43 #ifndef CONFIG_YAFFS_9BYTE_TAGS 41 #ifndef CONFIG_YAFFS_9BYTE_TAGS
44 # define YTAG1_SIZE 8 42 # define YTAG1_SIZE 8
45 #else 43 #else
46 # define YTAG1_SIZE 9 44 # define YTAG1_SIZE 9
135 ops.datbuf = (__u8 *)data; 133 ops.datbuf = (__u8 *)data;
136 ops.oobbuf = (__u8 *)&pt1; 134 ops.oobbuf = (__u8 *)&pt1;
137 135
138 retval = mtd->write_oob(mtd, addr, &ops); 136 retval = mtd->write_oob(mtd, addr, &ops);
139 if (retval) { 137 if (retval) {
140 yaffs_trace(YAFFS_TRACE_MTD, 138 T(YAFFS_TRACE_MTD,
141 "write_oob failed, chunk %d, mtd error %d\n", 139 (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR),
142 chunkInNAND, retval); 140 chunkInNAND, retval));
143 } 141 }
144 return retval ? YAFFS_FAIL : YAFFS_OK; 142 return retval ? YAFFS_FAIL : YAFFS_OK;
145 } 143 }
146 144
147 /* Return with empty ExtendedTags but add eccResult. 145 /* Return with empty ExtendedTags but add eccResult.
196 /* Read page and oob using MTD. 194 /* Read page and oob using MTD.
197 * Check status and determine ECC result. 195 * Check status and determine ECC result.
198 */ 196 */
199 retval = mtd->read_oob(mtd, addr, &ops); 197 retval = mtd->read_oob(mtd, addr, &ops);
200 if (retval) { 198 if (retval) {
201 yaffs_trace(YAFFS_TRACE_MTD, 199 T(YAFFS_TRACE_MTD,
202 "read_oob failed, chunk %d, mtd error %d\n", 200 (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR),
203 chunkInNAND, retval); 201 chunkInNAND, retval));
204 } 202 }
205 203
206 switch (retval) { 204 switch (retval) {
207 case 0: 205 case 0:
208 /* no error */ 206 /* no error */
284 { 282 {
285 struct mtd_info *mtd = yaffs_DeviceToContext(dev)->mtd; 283 struct mtd_info *mtd = yaffs_DeviceToContext(dev)->mtd;
286 int blocksize = dev->param.nChunksPerBlock * dev->nDataBytesPerChunk; 284 int blocksize = dev->param.nChunksPerBlock * dev->nDataBytesPerChunk;
287 int retval; 285 int retval;
288 286
289 yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo); 287 T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), blockNo));
290 288
291 retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); 289 retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
292 return (retval) ? YAFFS_FAIL : YAFFS_OK; 290 return (retval) ? YAFFS_FAIL : YAFFS_OK;
293 } 291 }
294 292
301 /* 2.6.18 has mtd->ecclayout->oobavail */ 299 /* 2.6.18 has mtd->ecclayout->oobavail */
302 /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */ 300 /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
303 int oobavail = mtd->ecclayout->oobavail; 301 int oobavail = mtd->ecclayout->oobavail;
304 302
305 if (oobavail < YTAG1_SIZE) { 303 if (oobavail < YTAG1_SIZE) {
306 yaffs_trace(YAFFS_TRACE_ERROR, 304 T(YAFFS_TRACE_ERROR,
307 "mtd device has only %d bytes for tags, need %d\n", 305 (TSTR("mtd device has only %d bytes for tags, need %d"TENDSTR),
308 oobavail, YTAG1_SIZE); 306 oobavail, YTAG1_SIZE));
309 return YAFFS_FAIL; 307 return YAFFS_FAIL;
310 } 308 }
311 return YAFFS_OK; 309 return YAFFS_OK;
312 } 310 }
313 311
338 return YAFFS_FAIL; 336 return YAFFS_FAIL;
339 337
340 retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); 338 retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
341 etags.blockBad = (mtd->block_isbad)(mtd, addr); 339 etags.blockBad = (mtd->block_isbad)(mtd, addr);
342 if (etags.blockBad) { 340 if (etags.blockBad) {
343 yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, 341 T(YAFFS_TRACE_BAD_BLOCKS,
344 "block %d is marked bad\n", blockNo); 342 (TSTR("block %d is marked bad"TENDSTR), blockNo));
345 state = YAFFS_BLOCK_STATE_DEAD; 343 state = YAFFS_BLOCK_STATE_DEAD;
346 } else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) { 344 } else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) {
347 /* bad tags, need to look more closely */ 345 /* bad tags, need to look more closely */
348 state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; 346 state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
349 } else if (etags.chunkUsed) { 347 } else if (etags.chunkUsed) {