mtd/include/linux/mtd nand.h,1.69,1.70

[dmarlin at infradead.org]

Update of /home/cvs/mtd/include/linux/mtd
In directory phoenix.infradead.org:/tmp/cvs-serv19806/include/linux/mtd

Modified Files:
	nand.h 
Log Message:
Add optional hardware specific callback routine to perform extra error 
status checks on erase and write failures for devices with hardware ECC.

Signed-off-by: Thomas Gleixner <tglx at linutronix.de>


Index: nand.h
===================================================================
RCS file: /home/cvs/mtd/include/linux/mtd/nand.h,v
retrieving revision 1.69
retrieving revision 1.70
diff -u -r1.69 -r1.70
--- nand.h	17 Jan 2005 18:29:18 -0000	1.69
+++ nand.h	24 Jan 2005 03:07:42 -0000	1.70
@@ -50,6 +50,8 @@
  *			update of nand_chip structure description
  *  01-17-2005 dmarlin	added extended commands for AG-AND device and added option 
  * 			for BBT_AUTO_REFRESH.
+ *  01-20-2005 dmarlin	added optional pointer to hardware specific callback for 
+ *			extra error status checks.
  */
 #ifndef __LINUX_MTD_NAND_H
 #define __LINUX_MTD_NAND_H
@@ -164,7 +166,7 @@
 
 /*
  * Constants for Hardware ECC
-*/
+ */
 /* Reset Hardware ECC for read */
 #define NAND_ECC_READ		0
 /* Reset Hardware ECC for write */
@@ -172,6 +174,10 @@
 /* Enable Hardware ECC before syndrom is read back from flash */
 #define NAND_ECC_READSYN	2
 
+/* Bit mask for flags passed to do_nand_read_ecc */
+#define NAND_GET_DEVICE		0x80
+
+
 /* Option constants for bizarre disfunctionality and real
 *  features
 */
@@ -308,6 +314,8 @@
  * @badblock_pattern:	[REPLACEABLE] bad block scan pattern used for initial bad block scan 
  * @controller:		[OPTIONAL] a pointer to a hardware controller structure which is shared among multiple independend devices
  * @priv:		[OPTIONAL] pointer to private chip date
+ * @errstat:		[OPTIONAL] hardware specific function to perform additional error status checks 
+ *			(determine if errors are correctable)
  */
  
 struct nand_chip {
@@ -363,6 +371,7 @@
 	struct nand_bbt_descr	*badblock_pattern;
 	struct nand_hw_control  *controller;
 	void		*priv;
+	int		(*errstat)(struct mtd_info *mtd, struct nand_chip *this, int state, int status, int page);
 };
 
 /*
@@ -484,6 +493,9 @@
 extern int nand_default_bbt (struct mtd_info *mtd);
 extern int nand_isbad_bbt (struct mtd_info *mtd, loff_t offs, int allowbbt);
 extern int nand_erase_nand (struct mtd_info *mtd, struct erase_info *instr, int allowbbt);
+extern int nand_do_read_ecc (struct mtd_info *mtd, loff_t from, size_t len,
+                             size_t * retlen, u_char * buf, u_char * oob_buf,
+                             struct nand_oobinfo *oobsel, int flags);
 
 /*
 * Constants for oob configuration