patch-2.4.21 linux-2.4.21/include/linux/mtd/mtd.h

• Lines: 73
• Date: 2003-06-13 07:51:38.000000000 -0700
• Orig file: linux-2.4.20/include/linux/mtd/mtd.h
• Orig date: 2001-06-12 10:30:27.000000000 -0700

diff -urN linux-2.4.20/include/linux/mtd/mtd.h linux-2.4.21/include/linux/mtd/mtd.h
@@ -1,5 +1,5 @@
 
-/* $Id: mtd.h,v 1.33 2001/06/09 00:08:59 dwmw2 Exp $ */
+/* $Id: mtd.h,v 1.38 2003/01/12 16:30:19 spse Exp $ */
 
 #ifndef __MTD_MTD_H__
 #define __MTD_MTD_H__
@@ -93,6 +93,8 @@
 #define MEMUNLOCK               _IOW('M', 6, struct erase_info_user)
 #define MEMGETREGIONCOUNT	_IOR('M', 7, int)
 #define MEMGETREGIONINFO	_IOWR('M', 8, struct region_info_user)
+#define	MEMREADDATA             _IOWR('M', 9, struct mtd_oob_buf)
+#define	MEMWRITEDATA            _IOWR('M', 10, struct mtd_oob_buf)
 
 #ifndef __KERNEL__
 
@@ -168,25 +170,41 @@
 	int (*point) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf);
 
 	/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
-	void (*unpoint) (struct mtd_info *mtd, u_char * addr);
+	void (*unpoint) (struct mtd_info *mtd, u_char * addr, loff_t from, size_t len);
 
 
 	int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
 	int (*write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
 
-	int (*read_ecc) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, u_char *eccbuf);
-	int (*write_ecc) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf, u_char *eccbuf);
+	int (*read_ecc) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf, u_char *eccbuf, int oobsel);
+	int (*write_ecc) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf, u_char *eccbuf, int oobsel);
 
 	int (*read_oob) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
 	int (*write_oob) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
 
+	/* 
+	 * Methods to access the protection register area, present in some 
+	 * flash devices. The user data is one time programmable but the
+	 * factory data is read only. 
+	 */
+	int (*read_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+
+	int (*read_fact_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+
+	/* This function is not yet implemented */
+	int (*write_user_prot_reg) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);
+
 	/* iovec-based read/write methods. We need these especially for NAND flash,
 	   with its limited number of write cycles per erase.
 	   NB: The 'count' parameter is the number of _vectors_, each of 
 	   which contains an (ofs, len) tuple.
 	*/
 	int (*readv) (struct mtd_info *mtd, struct iovec *vecs, unsigned long count, loff_t from, size_t *retlen);
+	int (*readv_ecc) (struct mtd_info *mtd, struct iovec *vecs, unsigned long count, loff_t from, 
+		size_t *retlen, u_char *eccbuf, int oobsel);
 	int (*writev) (struct mtd_info *mtd, const struct iovec *vecs, unsigned long count, loff_t to, size_t *retlen);
+	int (*writev_ecc) (struct mtd_info *mtd, const struct iovec *vecs, unsigned long count, loff_t to, 
+		size_t *retlen, u_char *eccbuf, int oobsel);
 
 	/* Sync */
 	void (*sync) (struct mtd_info *mtd);
@@ -239,6 +257,11 @@
 extern void register_mtd_user (struct mtd_notifier *new);
 extern int unregister_mtd_user (struct mtd_notifier *old);
 
+int default_mtd_writev(struct mtd_info *mtd, const struct iovec *vecs,
+		       unsigned long count, loff_t to, size_t *retlen);
+
+int default_mtd_readv(struct mtd_info *mtd, struct iovec *vecs,
+		      unsigned long count, loff_t from, size_t *retlen);
 
 #ifndef MTDC
 #define MTD_ERASE(mtd, args...) (*(mtd->erase))(mtd, args)