[PATCH 3/8] mtd: sync bbm.h with Linux Kernel

Sascha Hauer s.hauer at pengutronix.de
Mon Jul 22 06:04:05 EDT 2013


Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 include/linux/mtd/bbm.h | 83 ++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 61 insertions(+), 22 deletions(-)

diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index 50bc4d9..87ec6a3 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -4,16 +4,33 @@
  *  NAND family Bad Block Management (BBM) header file
  *    - Bad Block Table (BBT) implementation
  *
- *  Copyright (c) 2005 Samsung Electronics
+ *  Copyright © 2005 Samsung Electronics
  *  Kyungmin Park <kyungmin.park at samsung.com>
  *
- *  Copyright (c) 2000-2005
+ *  Copyright © 2000-2005
  *  Thomas Gleixner <tglx at linuxtronix.de>
  *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
  */
 #ifndef __LINUX_MTD_BBM_H
 #define __LINUX_MTD_BBM_H
 
+/* The maximum number of NAND chips in an array */
+#define NAND_MAX_CHIPS		8
+
 /**
  * struct nand_bbt_descr - bad block table descriptor
  * @options:	options for this descriptor
@@ -38,15 +55,15 @@
  * of the first block.
  */
 struct nand_bbt_descr {
-	int	options;
-	int	pages[NAND_MAX_CHIPS];
-	int	offs;
-	int	veroffs;
-	uint8_t	version[NAND_MAX_CHIPS];
-	int	len;
-	int	maxblocks;
-	int	reserved_block_code;
-	uint8_t	*pattern;
+	int options;
+	int pages[NAND_MAX_CHIPS];
+	int offs;
+	int veroffs;
+	uint8_t version[NAND_MAX_CHIPS];
+	int len;
+	int maxblocks;
+	int reserved_block_code;
+	uint8_t *pattern;
 };
 
 /* Options for the bad block table descriptors */
@@ -58,27 +75,32 @@ struct nand_bbt_descr {
 #define NAND_BBT_4BIT		0x00000004
 #define NAND_BBT_8BIT		0x00000008
 /* The bad block table is in the last good block of the device */
-#define	NAND_BBT_LASTBLOCK	0x00000010
+#define NAND_BBT_LASTBLOCK	0x00000010
 /* The bbt is at the given page, else we must scan for the bbt */
 #define NAND_BBT_ABSPAGE	0x00000020
-/* The bbt is at the given page, else we must scan for the bbt */
-#define NAND_BBT_SEARCH		0x00000040
 /* bbt is stored per chip on multichip devices */
 #define NAND_BBT_PERCHIP	0x00000080
 /* bbt has a version counter at offset veroffs */
 #define NAND_BBT_VERSION	0x00000100
-/* Create a bbt if none axists */
+/* Create a bbt if none exists */
 #define NAND_BBT_CREATE		0x00000200
+/*
+ * Create an empty BBT with no vendor information. Vendor's information may be
+ * unavailable, for example, if the NAND controller has a different data and OOB
+ * layout or if this information is already purged. Must be used in conjunction
+ * with NAND_BBT_CREATE.
+ */
+#define NAND_BBT_CREATE_EMPTY	0x00000400
 /* Search good / bad pattern through all pages of a block */
-#define NAND_BBT_SCANALLPAGES	0x00000400
+#define NAND_BBT_SCANALLPAGES	0x00000800
 /* Scan block empty during good / bad block scan */
-#define NAND_BBT_SCANEMPTY	0x00000800
+#define NAND_BBT_SCANEMPTY	0x00001000
 /* Write bbt if neccecary */
-#define NAND_BBT_WRITE		0x00001000
+#define NAND_BBT_WRITE		0x00002000
 /* Read and write back block contents when writing bbt */
-#define NAND_BBT_SAVECONTENT	0x00002000
+#define NAND_BBT_SAVECONTENT	0x00004000
 /* Search good / bad pattern on the first and the second page */
-#define NAND_BBT_SCAN2NDPAGE	0x00004000
+#define NAND_BBT_SCAN2NDPAGE	0x00008000
 /* Search good / bad pattern on the last page of the eraseblock */
 #define NAND_BBT_SCANLASTPAGE	0x00010000
 
@@ -86,9 +108,26 @@ struct nand_bbt_descr {
  * Use a flash based bad block table. By default, OOB identifier is saved in
  * OOB area. This option is passed to the default bad block table function.
  */
-#define NAND_BBT_USE_FLASH      0x00020000
+#define NAND_BBT_USE_FLASH	0x00020000
+/*
+ * Do not store flash based bad block table marker in the OOB area; store it
+ * in-band.
+ */
+#define NAND_BBT_NO_OOB		0x00040000
+/*
+ * Do not write new bad block markers to OOB; useful, e.g., when ECC covers
+ * entire spare area. Must be used with NAND_BBT_USE_FLASH.
+ */
+#define NAND_BBT_NO_OOB_BBM	0x00080000
+
+/*
+ * Flag set by nand_create_default_bbt_descr(), marking that the nand_bbt_descr
+ * was allocated dynamicaly and must be freed in nand_release(). Has no meaning
+ * in nand_chip.bbt_options.
+ */
+#define NAND_BBT_DYNAMICSTRUCT	0x80000000
 
 /* The maximum number of blocks to scan for a bbt */
 #define NAND_BBT_SCAN_MAXBLOCKS	4
 
-#endif /* __LINUX_MTD_BBM_H */
+#endif	/* __LINUX_MTD_BBM_H */
-- 
1.8.3.2




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