X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=include%2Flinux%2Fmtd%2Fmtd.h;h=922636548558943d7af9007074cb8d2e7e91fcb0;hb=3a4b7886ee59e122d359e1714ed89585a06645ad;hp=3d956c3abb310d06867abd729f8aacd0433be00b;hpb=cb2ebc59ff52cee770cfd6ba5f23a6cc3c214648;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 3d956c3abb3..92263654855 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -1,6 +1,4 @@
 /*
- * $Id: mtd.h,v 1.61 2005/11/07 11:14:54 gleixner Exp $
- *
  * Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
  *
  * Released under GPL
@@ -9,10 +7,6 @@
 #ifndef __MTD_MTD_H__
 #define __MTD_MTD_H__
 
-#ifndef __KERNEL__
-#error This is a kernel header. Perhaps include mtd-user.h instead?
-#endif
-
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/uio.h>
@@ -53,6 +47,7 @@ struct mtd_erase_region_info {
 	u_int32_t offset;			/* At which this region starts, from the beginning of the MTD */
 	u_int32_t erasesize;		/* For this region */
 	u_int32_t numblocks;		/* Number of blocks of erasesize in this region */
+	unsigned long *lockmap;		/* If keeping bitmap of locks */
 };
 
 /*
@@ -124,7 +119,7 @@ struct mtd_info {
 	u_int32_t oobavail;  // Available OOB bytes per block
 
 	// Kernel-only stuff starts here.
-	char *name;
+	const char *name;
 	int index;
 
 	/* ecc layout structure pointer - read only ! */
@@ -136,21 +131,36 @@ struct mtd_info {
 	int numeraseregions;
 	struct mtd_erase_region_info *eraseregions;
 
-	/* This really shouldn't be here. It can go away in 2.5 */
-	u_int32_t bank_size;
-
+	/*
+	 * Erase is an asynchronous operation.  Device drivers are supposed
+	 * to call instr->callback() whenever the operation completes, even
+	 * if it completes with a failure.
+	 * Callers are supposed to pass a callback function and wait for it
+	 * to be called before writing to the block.
+	 */
 	int (*erase) (struct mtd_info *mtd, struct erase_info *instr);
 
 	/* This stuff for eXecute-In-Place */
-	int (*point) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf);
+	/* phys is optional and may be set to NULL */
+	int (*point) (struct mtd_info *mtd, loff_t from, size_t len,
+			size_t *retlen, void **virt, resource_size_t *phys);
 
 	/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
-	void (*unpoint) (struct mtd_info *mtd, u_char * addr, loff_t from, size_t len);
+	void (*unpoint) (struct mtd_info *mtd, 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);
 
+	/* In blackbox flight recorder like scenarios we want to make successful
+	   writes in interrupt context. panic_write() is only intended to be
+	   called when its known the kernel is about to panic and we need the
+	   write to succeed. Since the kernel is not going to be running for much
+	   longer, this function can break locks and delay to ensure the write
+	   succeeds (but not sleep). */
+
+	int (*panic_write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
+
 	int (*read_oob) (struct mtd_info *mtd, loff_t from,
 			 struct mtd_oob_ops *ops);
 	int (*write_oob) (struct mtd_info *mtd, loff_t to,
@@ -262,7 +272,11 @@ static inline void mtd_erase_callback(struct erase_info *instr)
 			printk(KERN_INFO args);		\
 	} while(0)
 #else /* CONFIG_MTD_DEBUG */
-#define DEBUG(n, args...) do { } while(0)
+#define DEBUG(n, args...)				\
+	do {						\
+		if (0)					\
+			printk(KERN_INFO args);		\
+	} while(0)
 
 #endif /* CONFIG_MTD_DEBUG */