diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-03-09 10:34:55 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-03-09 10:34:55 -0800 |
commit | 6e96783f586cc0a64651087cb518209a8577123f (patch) | |
tree | 8b74a5a8fda055ffeaa0c1ae3c070772599f8b3b | |
parent | 8466c833799b30ab343c5108cd2e460f9f16c9d8 (diff) | |
parent | 0feba829ee82a6e43baabe3f0bdf91bd937a67a1 (diff) | |
download | kernel_samsung_smdk4412-6e96783f586cc0a64651087cb518209a8577123f.zip kernel_samsung_smdk4412-6e96783f586cc0a64651087cb518209a8577123f.tar.gz kernel_samsung_smdk4412-6e96783f586cc0a64651087cb518209a8577123f.tar.bz2 |
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6:
[JFFS2] print a message when marking bad block
[JFFS2] Check for all-zero node headers
[MTD] [OneNAND] Classify the page data and oob buffer
[MTD] [OneNAND] Exit the loop when transferring/filling of the oob is finished
[MTD] [OneNAND] add Nokia Copyright and a credit
[MTD] [OneNAND] Fix typo & wrong comments
[MTD] [OneNAND] Use oob buffer instead of main one in oob functions
[MTD] Correct partition failed erase address
[JFFS2] Use yield() between GC passes in background thread.
[MTD] [NAND] Correct misspelled preprocessor variable.
[MTD] [MAPS] dilnetpc: Fix printk warning
[MTD] [NOR] Fix oops in cfi_amdstd_sync
[MTD] ESB2 check for closed ROM window
[JFFS2] Fix writebuffer recovery in the first page of a block
[MTD] [NAND] make oobavail public
-rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0002.c | 2 | ||||
-rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0020.c | 2 | ||||
-rw-r--r-- | drivers/mtd/maps/dilnetpc.c | 4 | ||||
-rw-r--r-- | drivers/mtd/maps/esb2rom.c | 11 | ||||
-rw-r--r-- | drivers/mtd/mtdconcat.c | 1 | ||||
-rw-r--r-- | drivers/mtd/mtdpart.c | 7 | ||||
-rw-r--r-- | drivers/mtd/nand/diskonchip.c | 2 | ||||
-rw-r--r-- | drivers/mtd/nand/nand_base.c | 1 | ||||
-rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 77 | ||||
-rw-r--r-- | fs/jffs2/background.c | 8 | ||||
-rw-r--r-- | fs/jffs2/readinode.c | 16 | ||||
-rw-r--r-- | fs/jffs2/scan.c | 9 | ||||
-rw-r--r-- | fs/jffs2/wbuf.c | 7 | ||||
-rw-r--r-- | include/linux/mtd/mtd.h | 1 | ||||
-rw-r--r-- | include/linux/mtd/onenand.h | 5 |
15 files changed, 115 insertions, 38 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index e3acd39..1f64458 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -359,6 +359,8 @@ struct mtd_info *cfi_cmdset_0002(struct map_info *map, int primary) cfi->chips[i].word_write_time = 1<<cfi->cfiq->WordWriteTimeoutTyp; cfi->chips[i].buffer_write_time = 1<<cfi->cfiq->BufWriteTimeoutTyp; cfi->chips[i].erase_time = 1<<cfi->cfiq->BlockEraseTimeoutTyp; + cfi->chips[i].ref_point_counter = 0; + init_waitqueue_head(&(cfi->chips[i].wq)); } map->fldrv = &cfi_amdstd_chipdrv; diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c index 69d49e0..b344ff8 100644 --- a/drivers/mtd/chips/cfi_cmdset_0020.c +++ b/drivers/mtd/chips/cfi_cmdset_0020.c @@ -158,6 +158,8 @@ struct mtd_info *cfi_cmdset_0020(struct map_info *map, int primary) cfi->chips[i].word_write_time = 128; cfi->chips[i].buffer_write_time = 128; cfi->chips[i].erase_time = 1024; + cfi->chips[i].ref_point_counter = 0; + init_waitqueue_head(&(cfi->chips[i].wq)); } return cfi_staa_setup(map); diff --git a/drivers/mtd/maps/dilnetpc.c b/drivers/mtd/maps/dilnetpc.c index b1104fe..1c3b34a 100644 --- a/drivers/mtd/maps/dilnetpc.c +++ b/drivers/mtd/maps/dilnetpc.c @@ -402,8 +402,8 @@ static int __init init_dnpc(void) ++higlvl_partition_info[i].name; } - printk(KERN_NOTICE "DIL/Net %s flash: 0x%lx at 0x%lx\n", - is_dnp ? "DNPC" : "ADNP", dnpc_map.size, dnpc_map.phys); + printk(KERN_NOTICE "DIL/Net %s flash: 0x%lx at 0x%llx\n", + is_dnp ? "DNPC" : "ADNP", dnpc_map.size, (unsigned long long)dnpc_map.phys); dnpc_map.virt = ioremap_nocache(dnpc_map.phys, dnpc_map.size); diff --git a/drivers/mtd/maps/esb2rom.c b/drivers/mtd/maps/esb2rom.c index 0bc013f..aa64a47 100644 --- a/drivers/mtd/maps/esb2rom.c +++ b/drivers/mtd/maps/esb2rom.c @@ -30,7 +30,7 @@ #define ROM_PROBE_STEP_SIZE (64*1024) /* 64KiB */ -#define BIOS_CNTL 0xDC +#define BIOS_CNTL 0xDC #define BIOS_LOCK_ENABLE 0x02 #define BIOS_WRITE_ENABLE 0x01 @@ -145,7 +145,7 @@ static void esb2rom_cleanup(struct esb2rom_window *window) } static int __devinit esb2rom_init_one(struct pci_dev *pdev, - const struct pci_device_id *ent) + const struct pci_device_id *ent) { static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL }; struct esb2rom_window *window = &esb2rom_window; @@ -185,7 +185,7 @@ static int __devinit esb2rom_init_one(struct pci_dev *pdev, /* Find a region continuous to the end of the ROM window */ window->phys = 0; pci_read_config_word(pdev, FWH_DEC_EN1, &word); - printk(KERN_DEBUG "pci_read_config_byte : %x\n", word); + printk(KERN_DEBUG "pci_read_config_word : %x\n", word); if ((word & FWH_8MiB) == FWH_8MiB) window->phys = 0xff400000; @@ -212,6 +212,11 @@ static int __devinit esb2rom_init_one(struct pci_dev *pdev, else if ((word & FWH_0_5MiB) == FWH_0_5MiB) window->phys = 0xfff80000; + if (window->phys == 0) { + printk(KERN_ERR MOD_NAME ": Rom window is closed\n"); + goto out; + } + /* reserved 0x0020 and 0x0010 */ window->phys -= 0x400000UL; window->size = (0xffffffffUL - window->phys) + 1UL; diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c index 880580c..41844ea 100644 --- a/drivers/mtd/mtdconcat.c +++ b/drivers/mtd/mtdconcat.c @@ -727,6 +727,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[], /* subdevices to c concat->mtd.erasesize = subdev[0]->erasesize; concat->mtd.writesize = subdev[0]->writesize; concat->mtd.oobsize = subdev[0]->oobsize; + concat->mtd.oobavail = subdev[0]->oobavail; if (subdev[0]->writev) concat->mtd.writev = concat_writev; if (subdev[0]->read_oob) diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 633def3..1af9890 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -200,6 +200,11 @@ static int part_erase (struct mtd_info *mtd, struct erase_info *instr) return -EINVAL; instr->addr += part->offset; ret = part->master->erase(part->master, instr); + if (ret) { + if (instr->fail_addr != 0xffffffff) + instr->fail_addr -= part->offset; + instr->addr -= part->offset; + } return ret; } @@ -338,6 +343,7 @@ int add_mtd_partitions(struct mtd_info *master, slave->mtd.size = parts[i].size; slave->mtd.writesize = master->writesize; slave->mtd.oobsize = master->oobsize; + slave->mtd.oobavail = master->oobavail; slave->mtd.subpage_sft = master->subpage_sft; slave->mtd.name = parts[i].name; @@ -559,4 +565,3 @@ EXPORT_SYMBOL_GPL(deregister_mtd_parser); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>"); MODULE_DESCRIPTION("Generic support for partitioning of MTD devices"); - diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c index 12608c1..595208f 100644 --- a/drivers/mtd/nand/diskonchip.c +++ b/drivers/mtd/nand/diskonchip.c @@ -114,7 +114,7 @@ module_param(no_autopart, int, 0); static int show_firmware_partition = 0; module_param(show_firmware_partition, int, 0); -#ifdef MTD_NAND_DISKONCHIP_BBTWRITE +#ifdef CONFIG_MTD_NAND_DISKONCHIP_BBTWRITE static int inftl_bbt_write = 1; #else static int inftl_bbt_write = 0; diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index acaf97b..6af37b8 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -2524,6 +2524,7 @@ int nand_scan_tail(struct mtd_info *mtd) for (i = 0; chip->ecc.layout->oobfree[i].length; i++) chip->ecc.layout->oobavail += chip->ecc.layout->oobfree[i].length; + mtd->oobavail = chip->ecc.layout->oobavail; /* * Set the number of read / write steps for one page depending on ECC diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 7f1cb6e..9e14a26 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -4,6 +4,11 @@ * Copyright (C) 2005-2007 Samsung Electronics * Kyungmin Park <kyungmin.park@samsung.com> * + * Credits: + * Adrian Hunter <ext-adrian.hunter@nokia.com>: + * auto-placement support, read-while load support, various fixes + * Copyright (C) Nokia Corporation, 2007 + * * 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. @@ -831,7 +836,7 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col int readcol = column; int readend = column + thislen; int lastgap = 0; - uint8_t *oob_buf = this->page_buf + mtd->writesize; + uint8_t *oob_buf = this->oob_buf; for (free = this->ecclayout->oobfree; free->length; ++free) { if (readcol >= lastgap) @@ -849,7 +854,8 @@ static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int col int n = ed - st; memcpy(buf, oob_buf + st, n); buf += n; - } + } else + break; } return 0; } @@ -947,9 +953,9 @@ static int onenand_do_read_oob(struct mtd_info *mtd, loff_t from, size_t len, /** * onenand_read_oob - [MTD Interface] NAND write data and/or out-of-band - * @mtd: MTD device structure - * @from: offset to read from - * @ops: oob operation description structure + * @param mtd: MTD device structure + * @param from: offset to read from + * @param ops: oob operation description structure */ static int onenand_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) @@ -1017,7 +1023,7 @@ static int onenand_bbt_wait(struct mtd_info *mtd, int state) * onenand_bbt_read_oob - [MTD Interface] OneNAND read out-of-band for bbt scan * @param mtd MTD device structure * @param from offset to read from - * @param @ops oob operation description structure + * @param ops oob operation description structure * * OneNAND read out-of-band data from the spare area for bbt scan */ @@ -1093,7 +1099,7 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to) { struct onenand_chip *this = mtd->priv; - char *readp = this->page_buf + mtd->writesize; + char oobbuf[64]; int status, i; this->command(mtd, ONENAND_CMD_READOOB, to, mtd->oobsize); @@ -1102,9 +1108,9 @@ static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to if (status) return status; - this->read_bufferram(mtd, ONENAND_SPARERAM, readp, 0, mtd->oobsize); - for(i = 0; i < mtd->oobsize; i++) - if (buf[i] != 0xFF && buf[i] != readp[i]) + this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); + for (i = 0; i < mtd->oobsize; i++) + if (buf[i] != 0xFF && buf[i] != oobbuf[i]) return -EBADMSG; return 0; @@ -1290,7 +1296,8 @@ static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf, int n = ed - st; memcpy(oob_buf + st, buf, n); buf += n; - } + } else + break; } return 0; } @@ -1312,6 +1319,7 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, struct onenand_chip *this = mtd->priv; int column, ret = 0, oobsize; int written = 0; + u_char *oobbuf; DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); @@ -1331,7 +1339,7 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, } /* For compatibility with NAND: Do not allow write past end of page */ - if (column + len > oobsize) { + if (unlikely(column + len > oobsize)) { printk(KERN_ERR "onenand_write_oob: " "Attempt to write past end of page\n"); return -EINVAL; @@ -1348,6 +1356,8 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, /* Grab the lock and see if the device is available */ onenand_get_device(mtd, FL_WRITING); + oobbuf = this->oob_buf; + /* Loop until all data write */ while (written < len) { int thislen = min_t(int, oobsize, len - written); @@ -1358,12 +1368,12 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, /* We send data to spare ram with oobsize * to prevent byte access */ - memset(this->page_buf, 0xff, mtd->oobsize); + memset(oobbuf, 0xff, mtd->oobsize); if (mode == MTD_OOB_AUTO) - onenand_fill_auto_oob(mtd, this->page_buf, buf, column, thislen); + onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen); else - memcpy(this->page_buf + column, buf, thislen); - this->write_bufferram(mtd, ONENAND_SPARERAM, this->page_buf, 0, mtd->oobsize); + memcpy(oobbuf + column, buf, thislen); + this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize); @@ -1375,7 +1385,7 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, break; } - ret = onenand_verify_oob(mtd, this->page_buf, to); + ret = onenand_verify_oob(mtd, oobbuf, to); if (ret) { printk(KERN_ERR "onenand_write_oob: verify failed %d\n", ret); break; @@ -1400,9 +1410,9 @@ static int onenand_do_write_oob(struct mtd_info *mtd, loff_t to, size_t len, /** * onenand_write_oob - [MTD Interface] NAND write data and/or out-of-band - * @mtd: MTD device structure - * @from: offset to read from - * @ops: oob operation description structure + * @param mtd: MTD device structure + * @param to: offset to write + * @param ops: oob operation description structure */ static int onenand_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops) @@ -1616,6 +1626,7 @@ static int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs) * @param mtd MTD device structure * @param ofs offset relative to mtd start * @param len number of bytes to lock or unlock + * @param cmd lock or unlock command * * Lock or unlock one or more blocks */ @@ -2117,10 +2128,11 @@ static void onenand_check_features(struct mtd_info *mtd) } /** - * onenand_print_device_info - Print device ID + * onenand_print_device_info - Print device & version ID * @param device device ID + * @param version version ID * - * Print device ID + * Print device & version ID */ static void onenand_print_device_info(int device, int version) { @@ -2320,15 +2332,25 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) /* Allocate buffers, if necessary */ if (!this->page_buf) { - size_t len; - len = mtd->writesize + mtd->oobsize; - this->page_buf = kmalloc(len, GFP_KERNEL); + this->page_buf = kzalloc(mtd->writesize, GFP_KERNEL); if (!this->page_buf) { printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n"); return -ENOMEM; } this->options |= ONENAND_PAGEBUF_ALLOC; } + if (!this->oob_buf) { + this->oob_buf = kzalloc(mtd->oobsize, GFP_KERNEL); + if (!this->oob_buf) { + printk(KERN_ERR "onenand_scan(): Can't allocate oob_buf\n"); + if (this->options & ONENAND_PAGEBUF_ALLOC) { + this->options &= ~ONENAND_PAGEBUF_ALLOC; + kfree(this->page_buf); + } + return -ENOMEM; + } + this->options |= ONENAND_OOBBUF_ALLOC; + } this->state = FL_READY; init_waitqueue_head(&this->wq); @@ -2367,6 +2389,7 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) for (i = 0; this->ecclayout->oobfree[i].length; i++) this->ecclayout->oobavail += this->ecclayout->oobfree[i].length; + mtd->oobavail = this->ecclayout->oobavail; mtd->ecclayout = this->ecclayout; @@ -2424,9 +2447,11 @@ void onenand_release(struct mtd_info *mtd) kfree(bbm->bbt); kfree(this->bbm); } - /* Buffer allocated by onenand_scan */ + /* Buffers allocated by onenand_scan */ if (this->options & ONENAND_PAGEBUF_ALLOC) kfree(this->page_buf); + if (this->options & ONENAND_OOBBUF_ALLOC) + kfree(this->oob_buf); } EXPORT_SYMBOL_GPL(onenand_scan); diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c index 6eb3dae..888f236 100644 --- a/fs/jffs2/background.c +++ b/fs/jffs2/background.c @@ -99,7 +99,13 @@ static int jffs2_garbage_collect_thread(void *_c) if (try_to_freeze()) continue; - cond_resched(); + /* This thread is purely an optimisation. But if it runs when + other things could be running, it actually makes things a + lot worse. Use yield() and put it at the back of the runqueue + every time. Especially during boot, pulling an inode in + with read_inode() is much preferable to having the GC thread + get there first. */ + yield(); /* Put_super will send a SIGKILL and then wait on the sem. */ diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c index 58a0b91..717a48c 100644 --- a/fs/jffs2/readinode.c +++ b/fs/jffs2/readinode.c @@ -373,7 +373,14 @@ free_out: static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref, struct jffs2_unknown_node *un) { /* We don't mark unknown nodes as REF_UNCHECKED */ - BUG_ON(ref_flags(ref) == REF_UNCHECKED); + if (ref_flags(ref) == REF_UNCHECKED) { + JFFS2_ERROR("REF_UNCHECKED but unknown node at %#08x\n", + ref_offset(ref)); + JFFS2_ERROR("Node is {%04x,%04x,%08x,%08x}. Please report this error.\n", + je16_to_cpu(un->magic), je16_to_cpu(un->nodetype), + je32_to_cpu(un->totlen), je32_to_cpu(un->hdr_crc)); + return 1; + } un->nodetype = cpu_to_je16(JFFS2_NODE_ACCURATE | je16_to_cpu(un->nodetype)); @@ -576,6 +583,13 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf jffs2_mark_node_obsolete(c, ref); goto cont; } + /* Due to poor choice of crc32 seed, an all-zero node will have a correct CRC */ + if (!je32_to_cpu(node->u.hdr_crc) && !je16_to_cpu(node->u.nodetype) && + !je16_to_cpu(node->u.magic) && !je32_to_cpu(node->u.totlen)) { + JFFS2_NOTICE("All zero node header at %#08x.\n", ref_offset(ref)); + jffs2_mark_node_obsolete(c, ref); + goto cont; + } switch (je16_to_cpu(node->u.nodetype)) { diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c index 31c1475..7fb45bd 100644 --- a/fs/jffs2/scan.c +++ b/fs/jffs2/scan.c @@ -734,6 +734,15 @@ scan_more: ofs += 4; continue; } + /* Due to poor choice of crc32 seed, an all-zero node will have a correct CRC */ + if (!je32_to_cpu(node->hdr_crc) && !je16_to_cpu(node->nodetype) && + !je16_to_cpu(node->magic) && !je32_to_cpu(node->totlen)) { + noisy_printk(&noise, "jffs2_scan_eraseblock(): All zero node header at 0x%08x.\n", ofs); + if ((err = jffs2_scan_dirty_space(c, jeb, 4))) + return err; + ofs += 4; + continue; + } if (ofs + je32_to_cpu(node->totlen) > jeb->offset + c->sector_size) { diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c index de718e3..4fac6dd 100644 --- a/fs/jffs2/wbuf.c +++ b/fs/jffs2/wbuf.c @@ -238,7 +238,10 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c) jeb = &c->blocks[c->wbuf_ofs / c->sector_size]; spin_lock(&c->erase_completion_lock); - jffs2_block_refile(c, jeb, REFILE_NOTEMPTY); + if (c->wbuf_ofs % c->mtd->erasesize) + jffs2_block_refile(c, jeb, REFILE_NOTEMPTY); + else + jffs2_block_refile(c, jeb, REFILE_ANYWAY); spin_unlock(&c->erase_completion_lock); BUG_ON(!ref_obsolete(jeb->last_node)); @@ -1087,7 +1090,7 @@ int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock * if (!c->mtd->block_markbad) return 1; // What else can we do? - D1(printk(KERN_WARNING "jffs2_write_nand_badblock(): Marking bad block at %08x\n", bad_offset)); + printk(KERN_WARNING "JFFS2: marking eraseblock at %08x\n as bad", bad_offset); ret = c->mtd->block_markbad(c->mtd, bad_offset); if (ret) { diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 6a8570b..3d956c3 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -121,6 +121,7 @@ struct mtd_info { u_int32_t writesize; u_int32_t oobsize; // Amount of OOB data per block (e.g. 16) + u_int32_t oobavail; // Available OOB bytes per block // Kernel-only stuff starts here. char *name; diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index d8af8a9..a56d24a 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -82,7 +82,8 @@ struct onenand_bufferram { * @wq: [INTERN] wait queue to sleep on if a OneNAND * operation is in progress * @state: [INTERN] the current state of the OneNAND device - * @page_buf: data buffer + * @page_buf: [INTERN] page main data buffer + * @oob_buf: [INTERN] page oob data buffer * @subpagesize: [INTERN] holds the subpagesize * @ecclayout: [REPLACEABLE] the default ecc placement scheme * @bbm: [REPLACEABLE] pointer to Bad Block Management @@ -122,6 +123,7 @@ struct onenand_chip { wait_queue_head_t wq; onenand_state_t state; unsigned char *page_buf; + unsigned char *oob_buf; int subpagesize; struct nand_ecclayout *ecclayout; @@ -156,6 +158,7 @@ struct onenand_chip { #define ONENAND_HAS_CONT_LOCK (0x0001) #define ONENAND_HAS_UNLOCK_ALL (0x0002) #define ONENAND_PAGEBUF_ALLOC (0x1000) +#define ONENAND_OOBBUF_ALLOC (0x2000) /* * OneNAND Flash Manufacturer ID Codes |