197894cda5773e59bd13e87b72077751099419a9fThomas Gleixner/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * inftlmount.c -- INFTL mount code with extensive checks. 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Author: Greg Ungerer (gerg@snapgear.com) 5a1452a3771c4eb85bd779790b040efdc36f4274eDavid Woodhouse * Copyright © 2002-2003, Greg Ungerer (gerg@snapgear.com) 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Based heavily on the nftlmount.c code which is: 897894cda5773e59bd13e87b72077751099419a9fThomas Gleixner * Author: Fabrice Bellard (fabrice.bellard@netgem.com) 9a1452a3771c4eb85bd779790b040efdc36f4274eDavid Woodhouse * Copyright © 2000 Netgem S.A. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the Free Software Foundation; either version 2 of the License, or 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (at your option) any later version. 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License for more details. 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/errno.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/io.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mtd/mtd.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mtd/nftl.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mtd/inftl.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * find_boot_record: Find the INFTL Media Header and its Spare copy which 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * contains the various device information of the INFTL partition and 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Bad Unit Table. Update the PUtable[] table according to the Bad 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unit Table. PUtable[] is used for management of Erase Unit in 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * other routines in inftlcore.c and inftlmount.c. 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int find_boot_record(struct INFTLrecord *inftl) 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inftl_unittail h1; 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //struct inftl_oob oob; 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int i, block; 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 buf[SECTORSIZE]; 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct INFTLMediaHeader *mh = &inftl->MediaHdr; 51f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner struct mtd_info *mtd = inftl->mbd.mtd; 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct INFTLPartition *ip; 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t retlen; 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55289c05222172b51401dbbb017115655f241d94abBrian Norris pr_debug("INFTL: find_boot_record(inftl=%p)\n", inftl); 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Assume logical EraseSize == physical erasesize for starting the 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * scan. We'll sort it out later if we find a MediaHeader which says 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * otherwise. 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->EraseSize = inftl->mbd.mtd->erasesize; 6369423d99fc182a81f3c5db3eb5c140acc6fc64beAdrian Hunter inftl->nb_blocks = (u32)inftl->mbd.mtd->size / inftl->EraseSize; 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->MediaUnit = BLOCK_NIL; 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Search for a valid boot record */ 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (block = 0; block < inftl->nb_blocks; block++) { 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Check for BNAND header first. Then whinge if it's found 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but later checks fail. 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 75329ad399a9b3adf52c90637b21ca029fcf7f8795Artem Bityutskiy ret = mtd_read(mtd, block * inftl->EraseSize, SECTORSIZE, 76329ad399a9b3adf52c90637b21ca029fcf7f8795Artem Bityutskiy &retlen, buf); 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We ignore ret in case the ECC of the MediaHeader is invalid 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (which is apparently acceptable) */ 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retlen != SECTORSIZE) { 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds static int warncount = 5; 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (warncount) { 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: block read at 0x%x " 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "of mtd%d failed: %d\n", 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block * inftl->EraseSize, 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->mbd.mtd->index, ret); 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!--warncount) 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: further " 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "failures for this block will " 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "not be printed\n"); 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retlen < 6 || memcmp(buf, "BNAND", 6)) { 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* BNAND\0 not found. Continue */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* To be safer with BIOS, also use erase mark as discriminant */ 10135109451f18280000ce5e7b76ac8d29eb222823bRoel Kluin ret = inftl_read_oob(mtd, 10235109451f18280000ce5e7b76ac8d29eb222823bRoel Kluin block * inftl->EraseSize + SECTORSIZE + 8, 10335109451f18280000ce5e7b76ac8d29eb222823bRoel Kluin 8, &retlen,(char *)&h1); 10435109451f18280000ce5e7b76ac8d29eb222823bRoel Kluin if (ret < 0) { 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: ANAND header found at " 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "0x%x in mtd%d, but OOB data read failed " 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "(err %d)\n", block * inftl->EraseSize, 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->mbd.mtd->index, ret); 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is the first we've seen. 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copy the media header structure into place. 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(mh, buf, sizeof(struct INFTLMediaHeader)); 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Read the spare media header at offset 4096 */ 120329ad399a9b3adf52c90637b21ca029fcf7f8795Artem Bityutskiy mtd_read(mtd, block * inftl->EraseSize + 4096, SECTORSIZE, 121329ad399a9b3adf52c90637b21ca029fcf7f8795Artem Bityutskiy &retlen, buf); 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retlen != SECTORSIZE) { 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: Unable to read spare " 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Media Header\n"); 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check if this one is the same as the first one we found. */ 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (memcmp(mh, buf, sizeof(struct INFTLMediaHeader))) { 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: Primary and spare Media " 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Headers disagree.\n"); 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->NoOfBootImageBlocks = le32_to_cpu(mh->NoOfBootImageBlocks); 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->NoOfBinaryPartitions = le32_to_cpu(mh->NoOfBinaryPartitions); 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->NoOfBDTLPartitions = le32_to_cpu(mh->NoOfBDTLPartitions); 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->BlockMultiplierBits = le32_to_cpu(mh->BlockMultiplierBits); 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->FormatFlags = le32_to_cpu(mh->FormatFlags); 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->PercentUsed = le32_to_cpu(mh->PercentUsed); 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 141278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("INFTL: Media Header ->\n" 142278981c541b706a5b4b802890020689cd6ee7781Brian Norris " bootRecordID = %s\n" 143278981c541b706a5b4b802890020689cd6ee7781Brian Norris " NoOfBootImageBlocks = %d\n" 144278981c541b706a5b4b802890020689cd6ee7781Brian Norris " NoOfBinaryPartitions = %d\n" 145278981c541b706a5b4b802890020689cd6ee7781Brian Norris " NoOfBDTLPartitions = %d\n" 146278981c541b706a5b4b802890020689cd6ee7781Brian Norris " BlockMultiplerBits = %d\n" 147278981c541b706a5b4b802890020689cd6ee7781Brian Norris " FormatFlgs = %d\n" 148278981c541b706a5b4b802890020689cd6ee7781Brian Norris " OsakVersion = 0x%x\n" 149278981c541b706a5b4b802890020689cd6ee7781Brian Norris " PercentUsed = %d\n", 150278981c541b706a5b4b802890020689cd6ee7781Brian Norris mh->bootRecordID, mh->NoOfBootImageBlocks, 151278981c541b706a5b4b802890020689cd6ee7781Brian Norris mh->NoOfBinaryPartitions, 152278981c541b706a5b4b802890020689cd6ee7781Brian Norris mh->NoOfBDTLPartitions, 153278981c541b706a5b4b802890020689cd6ee7781Brian Norris mh->BlockMultiplierBits, mh->FormatFlags, 154278981c541b706a5b4b802890020689cd6ee7781Brian Norris mh->OsakVersion, mh->PercentUsed); 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mh->NoOfBDTLPartitions == 0) { 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: Media Header sanity check " 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "failed: NoOfBDTLPartitions (%d) == 0, " 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "must be at least 1\n", mh->NoOfBDTLPartitions); 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((mh->NoOfBDTLPartitions + mh->NoOfBinaryPartitions) > 4) { 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: Media Header sanity check " 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "failed: Total Partitions (%d) > 4, " 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "BDTL=%d Binary=%d\n", mh->NoOfBDTLPartitions + 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->NoOfBinaryPartitions, 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->NoOfBDTLPartitions, 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->NoOfBinaryPartitions); 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mh->BlockMultiplierBits > 1) { 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: sorry, we don't support " 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "UnitSizeFactor 0x%02x\n", 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->BlockMultiplierBits); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (mh->BlockMultiplierBits == 1) { 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: support for INFTL with " 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "UnitSizeFactor 0x%02x is experimental\n", 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->BlockMultiplierBits); 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->EraseSize = inftl->mbd.mtd->erasesize << 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mh->BlockMultiplierBits; 18469423d99fc182a81f3c5db3eb5c140acc6fc64beAdrian Hunter inftl->nb_blocks = (u32)inftl->mbd.mtd->size / inftl->EraseSize; 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block >>= mh->BlockMultiplierBits; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Scan the partitions */ 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; (i < 4); i++) { 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ip = &mh->Partitions[i]; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ip->virtualUnits = le32_to_cpu(ip->virtualUnits); 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ip->firstUnit = le32_to_cpu(ip->firstUnit); 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ip->lastUnit = le32_to_cpu(ip->lastUnit); 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ip->flags = le32_to_cpu(ip->flags); 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ip->spareUnits = le32_to_cpu(ip->spareUnits); 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ip->Reserved0 = le32_to_cpu(ip->Reserved0); 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 198278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug(" PARTITION[%d] ->\n" 199278981c541b706a5b4b802890020689cd6ee7781Brian Norris " virtualUnits = %d\n" 200278981c541b706a5b4b802890020689cd6ee7781Brian Norris " firstUnit = %d\n" 201278981c541b706a5b4b802890020689cd6ee7781Brian Norris " lastUnit = %d\n" 202278981c541b706a5b4b802890020689cd6ee7781Brian Norris " flags = 0x%x\n" 203278981c541b706a5b4b802890020689cd6ee7781Brian Norris " spareUnits = %d\n", 204278981c541b706a5b4b802890020689cd6ee7781Brian Norris i, ip->virtualUnits, ip->firstUnit, 205278981c541b706a5b4b802890020689cd6ee7781Brian Norris ip->lastUnit, ip->flags, 206278981c541b706a5b4b802890020689cd6ee7781Brian Norris ip->spareUnits); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ip->Reserved0 != ip->firstUnit) { 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct erase_info *instr = &inftl->instr; 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds instr->mtd = inftl->mbd.mtd; 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Most likely this is using the 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * undocumented qiuck mount feature. 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We don't support that, we will need 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to erase the hidden block for full 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * compatibility. 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds instr->addr = ip->Reserved0 * inftl->EraseSize; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds instr->len = inftl->EraseSize; 2227e1f0dc0551b99acb5e8fa161a7ac401994d57d8Artem Bityutskiy mtd_erase(mtd, instr); 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((ip->lastUnit - ip->firstUnit + 1) < ip->virtualUnits) { 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: Media Header " 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Partition %d sanity check failed\n" 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " firstUnit %d : lastUnit %d > " 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "virtualUnits %d\n", i, ip->lastUnit, 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ip->firstUnit, ip->Reserved0); 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ip->Reserved1 != 0) { 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: Media Header " 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Partition %d sanity check failed: " 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "Reserved1 %d != 0\n", 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds i, ip->Reserved1); 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ip->flags & INFTL_BDTL) 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (i >= 4) { 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: Media Header Partition " 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "sanity check failed:\n No partition " 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "marked as Disk Partition\n"); 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->nb_boot_blocks = ip->firstUnit; 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->numvunits = ip->virtualUnits; 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (inftl->numvunits > (inftl->nb_blocks - 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->nb_boot_blocks - 2)) { 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: Media Header sanity check " 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "failed:\n numvunits (%d) > nb_blocks " 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "(%d) - nb_boot_blocks(%d) - 2\n", 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->numvunits, inftl->nb_blocks, 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->nb_boot_blocks); 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 26297894cda5773e59bd13e87b72077751099419a9fThomas Gleixner 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->mbd.size = inftl->numvunits * 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (inftl->EraseSize / SECTORSIZE); 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Block count is set to last used EUN (we won't need to keep 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * any meta-data past that point). 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->firstEUN = ip->firstUnit; 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->lastEUN = ip->lastUnit; 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->nb_blocks = ip->lastUnit + 1; 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Memory alloc */ 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->PUtable = kmalloc(inftl->nb_blocks * sizeof(u16), GFP_KERNEL); 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!inftl->PUtable) { 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: allocation of PUtable " 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "failed (%zd bytes)\n", 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->nb_blocks * sizeof(u16)); 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->VUtable = kmalloc(inftl->nb_blocks * sizeof(u16), GFP_KERNEL); 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!inftl->VUtable) { 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(inftl->PUtable); 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: allocation of VUtable " 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "failed (%zd bytes)\n", 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->nb_blocks * sizeof(u16)); 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 29197894cda5773e59bd13e87b72077751099419a9fThomas Gleixner 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Mark the blocks before INFTL MediaHeader as reserved */ 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < inftl->nb_boot_blocks; i++) 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->PUtable[i] = BLOCK_RESERVED; 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Mark all remaining blocks as potentially containing data */ 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; i < inftl->nb_blocks; i++) 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->PUtable[i] = BLOCK_NOTEXPLORED; 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Mark this boot record (NFTL MediaHeader) block as reserved */ 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->PUtable[block] = BLOCK_RESERVED; 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Read Bad Erase Unit Table and modify PUtable[] accordingly */ 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < inftl->nb_blocks; i++) { 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int physblock; 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* If any of the physical eraseblocks are bad, don't 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds use the unit. */ 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (physblock = 0; physblock < inftl->EraseSize; physblock += inftl->mbd.mtd->erasesize) { 3087086c19d07429d697057587caf1e5e0345442d16Artem Bityutskiy if (mtd_block_isbad(inftl->mbd.mtd, 3097086c19d07429d697057587caf1e5e0345442d16Artem Bityutskiy i * inftl->EraseSize + physblock)) 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->PUtable[i] = BLOCK_RESERVED; 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->MediaUnit = block; 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Not found. */ 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int memcmpb(void *a, int c, int n) 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < n; i++) { 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (c != ((unsigned char *)a)[i]) 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 1; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * check_free_sector: check if a free sector is actually FREE, 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * i.e. All 0xff in data and oob area. 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int check_free_sectors(struct INFTLrecord *inftl, unsigned int address, 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int len, int check_oob) 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 buf[SECTORSIZE + inftl->mbd.mtd->oobsize]; 3409223a456da8ed357bf7e0b128c853e2c8bd54614Thomas Gleixner struct mtd_info *mtd = inftl->mbd.mtd; 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t retlen; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < len; i += SECTORSIZE) { 345329ad399a9b3adf52c90637b21ca029fcf7f8795Artem Bityutskiy if (mtd_read(mtd, address, SECTORSIZE, &retlen, buf)) 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (memcmpb(buf, 0xff, SECTORSIZE) != 0) 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (check_oob) { 3518593fbc68b0df1168995de76d1af38eb62fd6b62Thomas Gleixner if(inftl_read_oob(mtd, address, mtd->oobsize, 3528593fbc68b0df1168995de76d1af38eb62fd6b62Thomas Gleixner &retlen, &buf[SECTORSIZE]) < 0) 3539223a456da8ed357bf7e0b128c853e2c8bd54614Thomas Gleixner return -1; 3549223a456da8ed357bf7e0b128c853e2c8bd54614Thomas Gleixner if (memcmpb(buf + SECTORSIZE, 0xff, mtd->oobsize) != 0) 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds address += SECTORSIZE; 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * INFTL_format: format a Erase Unit by erasing ALL Erase Zones in the Erase 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Unit and Update INFTL metadata. Each erase operation is 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * checked with check_free_sectors. 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Return: 0 when succeed, -1 on error. 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 37092394b5c2be774425f255b5c7afbd8b19978fe12Brian Norris * ToDo: 1. Is it necessary to check_free_sector after erasing ?? 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint INFTL_formatblock(struct INFTLrecord *inftl, int block) 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t retlen; 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inftl_unittail uci; 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct erase_info *instr = &inftl->instr; 377f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner struct mtd_info *mtd = inftl->mbd.mtd; 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int physblock; 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3800a32a10264d151bc2d1616d69edaf915aa728698Brian Norris pr_debug("INFTL: INFTL_formatblock(inftl=%p,block=%d)\n", inftl, block); 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(instr, 0, sizeof(struct erase_info)); 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* FIXME: Shouldn't we be setting the 'discarded' flag to zero 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds _first_? */ 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Use async erase interface, test return code */ 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds instr->mtd = inftl->mbd.mtd; 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds instr->addr = block * inftl->EraseSize; 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds instr->len = inftl->mbd.mtd->erasesize; 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Erase one physical eraseblock at a time, even though the NAND api 3921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds allows us to group them. This way we if we have a failure, we can 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mark only the failed block in the bbt. */ 394f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner for (physblock = 0; physblock < inftl->EraseSize; 395f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner physblock += instr->len, instr->addr += instr->len) { 3967e1f0dc0551b99acb5e8fa161a7ac401994d57d8Artem Bityutskiy mtd_erase(inftl->mbd.mtd, instr); 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (instr->state == MTD_ERASE_FAILED) { 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: error while formatting block %d\n", 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block); 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail; 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 405f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner * Check the "freeness" of Erase Unit before updating metadata. 406f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner * FixMe: is this check really necessary? Since we have check 407f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner * the return code after the erase operation. 408f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner */ 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (check_free_sectors(inftl, instr->addr, instr->len, 1) != 0) 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail; 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uci.EraseMark = cpu_to_le16(ERASE_MARK); 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uci.EraseMark1 = cpu_to_le16(ERASE_MARK); 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uci.Reserved[0] = 0; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uci.Reserved[1] = 0; 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uci.Reserved[2] = 0; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uci.Reserved[3] = 0; 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds instr->addr = block * inftl->EraseSize + SECTORSIZE * 2; 4208593fbc68b0df1168995de76d1af38eb62fd6b62Thomas Gleixner if (inftl_write_oob(mtd, instr->addr + 8, 8, &retlen, (char *)&uci) < 0) 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto fail; 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfail: 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* could not format, update the bad block table (caller is responsible 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for setting the PUtable to BLOCK_RESERVED on failure) */ 4265942ddbc500d1c9b75e571b656be97f65b26adfeArtem Bityutskiy mtd_block_markbad(inftl->mbd.mtd, instr->addr); 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * format_chain: Format an invalid Virtual Unit chain. It frees all the Erase 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Units in a Virtual Unit Chain, i.e. all the units are disconnected. 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Since the chain is invalid then we will have to erase it from its 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * head (normally for INFTL we go from the oldest). But if it has a 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * loop then there is no oldest... 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void format_chain(struct INFTLrecord *inftl, unsigned int first_block) 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int block = first_block, block1; 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: formatting chain at block %d\n", 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds first_block); 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (;;) { 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block1 = inftl->PUtable[block]; 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: formatting block %d\n", block); 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (INFTL_formatblock(inftl, block) < 0) { 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Cannot format !!!! Mark it as Bad Unit, 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->PUtable[block] = BLOCK_RESERVED; 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds inftl->PUtable[block] = BLOCK_FREE; 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Goto next block on the chain */ 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block = block1; 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (block == BLOCK_NIL || block >= inftl->lastEUN) 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid INFTL_dumptables(struct INFTLrecord *s) 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 470278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("-------------------------------------------" 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "----------------------------------\n"); 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 473278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("VUtable[%d] ->", s->nb_blocks); 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < s->nb_blocks; i++) { 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((i % 8) == 0) 476278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("\n%04x: ", i); 477278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("%04x ", s->VUtable[i]); 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 480278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("\n-------------------------------------------" 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "----------------------------------\n"); 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 483278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("PUtable[%d-%d=%d] ->", s->firstEUN, s->lastEUN, s->nb_blocks); 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i <= s->lastEUN; i++) { 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((i % 8) == 0) 486278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("\n%04x: ", i); 487278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("%04x ", s->PUtable[i]); 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 490278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("\n-------------------------------------------" 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "----------------------------------\n"); 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 493278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("INFTL ->\n" 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " EraseSize = %d\n" 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " h/s/c = %d/%d/%d\n" 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " numvunits = %d\n" 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " firstEUN = %d\n" 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " lastEUN = %d\n" 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " numfreeEUNs = %d\n" 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " LastFreeEUN = %d\n" 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " nb_blocks = %d\n" 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds " nb_boot_blocks = %d", 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->EraseSize, s->heads, s->sectors, s->cylinders, 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->numvunits, s->firstEUN, s->lastEUN, s->numfreeEUNs, 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->LastFreeEUN, s->nb_blocks, s->nb_boot_blocks); 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 507278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("\n-------------------------------------------" 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "----------------------------------\n"); 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid INFTL_dumpVUchains(struct INFTLrecord *s) 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int logical, block, i; 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 515278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("-------------------------------------------" 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "----------------------------------\n"); 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 518278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("INFTL Virtual Unit Chains:\n"); 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (logical = 0; logical < s->nb_blocks; logical++) { 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block = s->VUtable[logical]; 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (block > s->nb_blocks) 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 523278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug(" LOGICAL %d --> %d ", logical, block); 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < s->nb_blocks; i++) { 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->PUtable[block] == BLOCK_NIL) 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block = s->PUtable[block]; 528278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("%d ", block); 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 530278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("\n"); 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 533278981c541b706a5b4b802890020689cd6ee7781Brian Norris pr_debug("-------------------------------------------" 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "----------------------------------\n"); 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsint INFTL_mount(struct INFTLrecord *s) 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 539f4a43cfcecfcaeeaa40a9dbc1d1378298c22446eThomas Gleixner struct mtd_info *mtd = s->mbd.mtd; 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int block, first_block, prev_block, last_block; 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int first_logical_block, logical_block, erase_mark; 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chain_length, do_format_chain; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inftl_unithead1 h0; 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct inftl_unittail h1; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t retlen; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 *ANACtable, ANAC; 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 549289c05222172b51401dbbb017115655f241d94abBrian Norris pr_debug("INFTL: INFTL_mount(inftl=%p)\n", s); 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Search for INFTL MediaHeader and Spare INFTL Media Header */ 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (find_boot_record(s) < 0) { 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: could not find valid boot record?\n"); 554e21f6c02f78351c4aae8510929ed794cd818d847David Woodhouse return -ENXIO; 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Init the logical to physical table */ 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < s->nb_blocks; i++) 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->VUtable[i] = BLOCK_NIL; 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds logical_block = block = BLOCK_NIL; 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Temporary buffer to store ANAC numbers. */ 564d67d1d7fc344e44b51296327a0b09a9419ca307fMariusz Kozlowski ANACtable = kcalloc(s->nb_blocks, sizeof(u8), GFP_KERNEL); 5658766af935f3f018ec4fd420644360643838ec323Greg Ungerer if (!ANACtable) { 5668766af935f3f018ec4fd420644360643838ec323Greg Ungerer printk(KERN_WARNING "INFTL: allocation of ANACtable " 5678766af935f3f018ec4fd420644360643838ec323Greg Ungerer "failed (%zd bytes)\n", 5688766af935f3f018ec4fd420644360643838ec323Greg Ungerer s->nb_blocks * sizeof(u8)); 5698766af935f3f018ec4fd420644360643838ec323Greg Ungerer return -ENOMEM; 5708766af935f3f018ec4fd420644360643838ec323Greg Ungerer } 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * First pass is to explore each physical unit, and construct the 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * virtual chains that exist (newest physical unit goes into VUtable). 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Any block that is in any way invalid will be left in the 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTEXPLORED state. Then at the end we will try to format it and 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * mark it as free. 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 579289c05222172b51401dbbb017115655f241d94abBrian Norris pr_debug("INFTL: pass 1, explore each unit\n"); 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (first_block = s->firstEUN; first_block <= s->lastEUN; first_block++) { 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->PUtable[first_block] != BLOCK_NOTEXPLORED) 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_format_chain = 0; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds first_logical_block = BLOCK_NIL; 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last_block = BLOCK_NIL; 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block = first_block; 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (chain_length = 0; ; chain_length++) { 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 59197894cda5773e59bd13e87b72077751099419a9fThomas Gleixner if ((chain_length == 0) && 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (s->PUtable[block] != BLOCK_NOTEXPLORED)) { 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Nothing to do here, onto next block */ 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5978593fbc68b0df1168995de76d1af38eb62fd6b62Thomas Gleixner if (inftl_read_oob(mtd, block * s->EraseSize + 8, 5988593fbc68b0df1168995de76d1af38eb62fd6b62Thomas Gleixner 8, &retlen, (char *)&h0) < 0 || 5998593fbc68b0df1168995de76d1af38eb62fd6b62Thomas Gleixner inftl_read_oob(mtd, block * s->EraseSize + 6008593fbc68b0df1168995de76d1af38eb62fd6b62Thomas Gleixner 2 * SECTORSIZE + 8, 8, &retlen, 6018593fbc68b0df1168995de76d1af38eb62fd6b62Thomas Gleixner (char *)&h1) < 0) { 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Should never happen? */ 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_format_chain++; 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds logical_block = le16_to_cpu(h0.virtualUnitNo); 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prev_block = le16_to_cpu(h0.prevUnitNo); 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds erase_mark = le16_to_cpu((h1.EraseMark | h1.EraseMark1)); 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ANACtable[block] = h0.ANAC; 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Previous block is relative to start of Partition */ 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (prev_block < s->nb_blocks) 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prev_block += s->firstEUN; 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Already explored partial chain? */ 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->PUtable[block] != BLOCK_NOTEXPLORED) { 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check if chain for this logical */ 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (logical_block == first_logical_block) { 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (last_block != BLOCK_NIL) 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[last_block] = block; 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check for invalid block */ 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (erase_mark != ERASE_MARK) { 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: corrupt block %d " 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "in chain %d, chain length %d, erase " 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "mark 0x%x?\n", block, first_block, 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds chain_length, erase_mark); 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Assume end of chain, probably incomplete 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fold/erase... 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (chain_length == 0) 6371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_format_chain++; 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check for it being free already then... */ 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((logical_block == BLOCK_FREE) || 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (logical_block == BLOCK_NIL)) { 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[block] = BLOCK_FREE; 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Sanity checks on block numbers */ 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((logical_block >= s->nb_blocks) || 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((prev_block >= s->nb_blocks) && 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (prev_block != BLOCK_NIL))) { 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (chain_length > 0) { 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: corrupt " 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "block %d in chain %d?\n", 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block, first_block); 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_format_chain++; 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (first_logical_block == BLOCK_NIL) { 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds first_logical_block = logical_block; 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (first_logical_block != logical_block) { 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Normal for folded chain... */ 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Current block is valid, so if we followed a virtual 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * chain to get here then we can set the previous 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * block pointer in our PUtable now. Then move onto 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the previous block in the chain. 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[block] = BLOCK_NIL; 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (last_block != BLOCK_NIL) 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[last_block] = block; 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last_block = block; 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block = prev_block; 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check for end of chain */ 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (block == BLOCK_NIL) 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Validate next block before following it... */ 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (block > s->lastEUN) { 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: invalid previous " 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "block %d in chain %d?\n", block, 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds first_block); 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_format_chain++; 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (do_format_chain) { 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds format_chain(s, first_block); 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Looks like a valid chain then. It may not really be the 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * newest block in the chain, but it is the newest we have 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * found so far. We might update it in later iterations of 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * this loop if we find something newer. 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->VUtable[first_logical_block] = first_block; 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds logical_block = BLOCK_NIL; 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 711278981c541b706a5b4b802890020689cd6ee7781Brian Norris INFTL_dumptables(s); 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Second pass, check for infinite loops in chains. These are 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * possible because we don't update the previous pointers when 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * we fold chains. No big deal, just fix them up in PUtable. 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 718289c05222172b51401dbbb017115655f241d94abBrian Norris pr_debug("INFTL: pass 2, validate virtual chains\n"); 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (logical_block = 0; logical_block < s->numvunits; logical_block++) { 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block = s->VUtable[logical_block]; 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last_block = BLOCK_NIL; 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check for free/reserved/nil */ 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (block >= BLOCK_RESERVED) 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ANAC = ANACtable[block]; 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < s->numvunits; i++) { 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->PUtable[block] == BLOCK_NIL) 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->PUtable[block] > s->lastEUN) { 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk(KERN_WARNING "INFTL: invalid prev %d, " 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds "in virtual chain %d\n", 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[block], logical_block); 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[block] = BLOCK_NIL; 73697894cda5773e59bd13e87b72077751099419a9fThomas Gleixner 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ANACtable[block] != ANAC) { 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Chain must point back to itself. This is ok, 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but we will need adjust the tables with this 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * newest block and oldest block. 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->VUtable[logical_block] = block; 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[last_block] = BLOCK_NIL; 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ANAC--; 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds last_block = block; 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block = s->PUtable[block]; 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (i >= s->nb_blocks) { 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Uhoo, infinite chain with valid ANACS! 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Format whole chain... 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds format_chain(s, first_block); 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 763278981c541b706a5b4b802890020689cd6ee7781Brian Norris INFTL_dumptables(s); 764278981c541b706a5b4b802890020689cd6ee7781Brian Norris INFTL_dumpVUchains(s); 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Third pass, format unreferenced blocks and init free block count. 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->numfreeEUNs = 0; 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->LastFreeEUN = BLOCK_NIL; 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 772289c05222172b51401dbbb017115655f241d94abBrian Norris pr_debug("INFTL: pass 3, format unused blocks\n"); 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (block = s->firstEUN; block <= s->lastEUN; block++) { 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->PUtable[block] == BLOCK_NOTEXPLORED) { 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("INFTL: unreferenced block %d, formatting it\n", 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds block); 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (INFTL_formatblock(s, block) < 0) 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[block] = BLOCK_RESERVED; 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->PUtable[block] = BLOCK_FREE; 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->PUtable[block] == BLOCK_FREE) { 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->numfreeEUNs++; 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (s->LastFreeEUN == BLOCK_NIL) 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s->LastFreeEUN = block; 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(ANACtable); 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 792