Merge bk://linux-mtd.bkbits.net/mtd-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

5 files changed, 165 insertions, 28 deletions

diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index a3efae0cd9a2..284f24851f1d 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -1,7 +1,7 @@
 
 /* Common Flash Interface structures 
  * See http://support.intel.com/design/flash/technote/index.htm
- * $Id: cfi.h,v 1.45 2004/07/20 02:44:27 dwmw2 Exp $
+ * $Id: cfi.h,v 1.48 2004/10/20 23:08:05 dwmw2 Exp $
  */
 
 #ifndef __MTD_CFI_H__
@@ -177,16 +177,19 @@ struct cfi_bri_query {
 	uint32_t ConfField[1]; /* Not host ordered */
 } __attribute__((packed));
 
-#define P_ID_NONE 0
-#define P_ID_INTEL_EXT 1
-#define P_ID_AMD_STD 2
-#define P_ID_INTEL_STD 3
-#define P_ID_AMD_EXT 4
-#define P_ID_ST_ADV 32
-#define P_ID_MITSUBISHI_STD 256
-#define P_ID_MITSUBISHI_EXT 257
-#define P_ID_SST_PAGE 258
-#define P_ID_RESERVED 65535
+#define P_ID_NONE               0x0000
+#define P_ID_INTEL_EXT          0x0001
+#define P_ID_AMD_STD            0x0002
+#define P_ID_INTEL_STD          0x0003
+#define P_ID_AMD_EXT            0x0004
+#define P_ID_WINBOND            0x0006
+#define P_ID_ST_ADV             0x0020
+#define P_ID_MITSUBISHI_STD     0x0100
+#define P_ID_MITSUBISHI_EXT     0x0101
+#define P_ID_SST_PAGE           0x0102
+#define P_ID_INTEL_PERFORMANCE  0x0200
+#define P_ID_INTEL_DATA         0x0210
+#define P_ID_RESERVED           0xffff
 
 
 #define CFI_MODE_CFI	1
@@ -350,17 +353,26 @@ static inline void cfi_spin_unlock(spinlock_t *mutex)
 
 struct cfi_extquery *cfi_read_pri(struct map_info *map, uint16_t adr, uint16_t size,
 			     const char* name);
-
 struct cfi_fixup {
 	uint16_t mfr;
 	uint16_t id;
-	void (*fixup)(struct map_info *map, void* param);
+	void (*fixup)(struct mtd_info *mtd, void* param);
 	void* param;
 };
 
 #define CFI_MFR_ANY 0xffff
 #define CFI_ID_ANY  0xffff
 
-void cfi_fixup(struct map_info *map, struct cfi_fixup* fixups);
+#define CFI_MFR_AMD 0x0001
+#define CFI_MFR_ST  0x0020 	/* STMicroelectronics */
+
+void cfi_fixup(struct mtd_info *mtd, struct cfi_fixup* fixups);
+
+typedef int (*varsize_frob_t)(struct map_info *map, struct flchip *chip,
+			      unsigned long adr, int len, void *thunk);
+
+int cfi_varsize_frob(struct mtd_info *mtd, varsize_frob_t frob,
+	loff_t ofs, size_t len, void *thunk);
+
 
 #endif /* __MTD_CFI_H__ */
diff --git a/include/linux/mtd/doc2000.h b/include/linux/mtd/doc2000.h
index 0fd8f49c649b..bc58c4f55ab0 100644
--- a/include/linux/mtd/doc2000.h
+++ b/include/linux/mtd/doc2000.h
@@ -6,7 +6,7 @@
  * Copyright (C) 2002-2003 Greg Ungerer <gerg@snapgear.com>
  * Copyright (C) 2002-2003 SnapGear Inc
  *
- * $Id: doc2000.h,v 1.22 2003/11/05 10:51:36 dwmw2 Exp $ 
+ * $Id: doc2000.h,v 1.23 2004/09/16 23:26:08 gleixner Exp $ 
  *
  * Released under GPL
  */
@@ -89,8 +89,8 @@
 #define WriteDOC_(d, adr, reg)  do{ *(volatile __u16 *)(((unsigned long)adr)+((reg)<<1)) = (__u16)d; wmb();} while(0)
 #define DOC_IOREMAP_LEN 0x4000
 #else
-#define ReadDOC_(adr, reg)      readb(((unsigned long)adr) + (reg))
-#define WriteDOC_(d, adr, reg)  writeb(d, ((unsigned long)adr) + (reg))
+#define ReadDOC_(adr, reg)      readb((void __iomem *)(((unsigned long)adr) + (reg)))
+#define WriteDOC_(d, adr, reg)  writeb(d, (void __iomem *)(((unsigned long)adr) + (reg)))
 #define DOC_IOREMAP_LEN 0x2000
 
 #endif
@@ -168,7 +168,7 @@ struct Nand {
 
 struct DiskOnChip {
 	unsigned long physadr;
-	unsigned long virtadr;
+	void __iomem *virtadr;
 	unsigned long totlen;
 	unsigned char ChipID; /* Type of DiskOnChip */
 	int ioreg;
diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
index 278d0f30de20..a960be2cc33c 100644
--- a/include/linux/mtd/map.h
+++ b/include/linux/mtd/map.h
@@ -1,6 +1,6 @@
 
 /* Overhauled routines for dealing with different mmap regions of flash */
-/* $Id: map.h,v 1.43 2004/07/14 13:30:27 dwmw2 Exp $ */
+/* $Id: map.h,v 1.45 2004/09/21 14:31:17 bjd Exp $ */
 
 #ifndef __LINUX_MTD_MAP_H__
 #define __LINUX_MTD_MAP_H__
@@ -8,6 +8,7 @@
 #include <linux/config.h>
 #include <linux/types.h>
 #include <linux/list.h>
+#include <linux/mtd/compatmac.h>
 #include <asm/unaligned.h>
 #include <asm/system.h>
 #include <asm/io.h>
@@ -55,6 +56,11 @@
 #define map_bankwidth_is_4(map) (0)
 #endif
 
+/* ensure we never evaluate anything shorted than an unsigned long
+ * to zero, and ensure we'll never miss the end of an comparison (bjd) */
+
+#define map_calc_words(map) ((map_bankwidth(map) + (sizeof(unsigned long)-1))/ sizeof(unsigned long))
+
 #ifdef CONFIG_MTD_MAP_BANK_WIDTH_8
 # ifdef map_bankwidth
 #  undef map_bankwidth
@@ -63,12 +69,12 @@
 #   undef map_bankwidth_is_large
 #   define map_bankwidth_is_large(map) (map_bankwidth(map) > BITS_PER_LONG/8)
 #   undef map_words
-#   define map_words(map) (map_bankwidth(map) / sizeof(unsigned long))
+#   define map_words(map) map_calc_words(map)
 #  endif
 # else
 #  define map_bankwidth(map) 8
 #  define map_bankwidth_is_large(map) (BITS_PER_LONG < 64)
-#  define map_words(map) (map_bankwidth(map) / sizeof(unsigned long))
+#  define map_words(map) map_calc_words(map)
 # endif
 #define map_bankwidth_is_8(map) (map_bankwidth(map) == 8)
 #undef MAX_MAP_BANKWIDTH
@@ -84,11 +90,11 @@
 #  undef map_bankwidth_is_large
 #  define map_bankwidth_is_large(map) (map_bankwidth(map) > BITS_PER_LONG/8)
 #  undef map_words
-#  define map_words(map) (map_bankwidth(map) / sizeof(unsigned long))
+#  define map_words(map) map_calc_words(map)
 # else
 #  define map_bankwidth(map) 16
 #  define map_bankwidth_is_large(map) (1)
-#  define map_words(map) (map_bankwidth(map) / sizeof(unsigned long))
+#  define map_words(map) map_calc_words(map)
 # endif
 #define map_bankwidth_is_16(map) (map_bankwidth(map) == 16)
 #undef MAX_MAP_BANKWIDTH
@@ -104,11 +110,11 @@
 #  undef map_bankwidth_is_large
 #  define map_bankwidth_is_large(map) (map_bankwidth(map) > BITS_PER_LONG/8)
 #  undef map_words
-#  define map_words(map) (map_bankwidth(map) / sizeof(unsigned long))
+#  define map_words(map) map_calc_words(map)
 # else
 #  define map_bankwidth(map) 32
 #  define map_bankwidth_is_large(map) (1)
-#  define map_words(map) (map_bankwidth(map) / sizeof(unsigned long))
+#  define map_words(map) map_calc_words(map)
 # endif
 #define map_bankwidth_is_32(map) (map_bankwidth(map) == 32)
 #undef MAX_MAP_BANKWIDTH
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 7de9f8dfa8ab..9453cb58c683 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -5,7 +5,7 @@
  *                     Steven J. Hill <sjhill@realitydiluted.com>
  *		       Thomas Gleixner <tglx@linutronix.de>
  *
- * $Id: nand.h,v 1.63 2004/07/07 16:29:43 gleixner Exp $
+ * $Id: nand.h,v 1.66 2004/10/02 10:07:08 gleixner Exp $
  *
  * 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
@@ -212,6 +212,18 @@ typedef enum {
 	FL_CACHEDPRG,
 } nand_state_t;
 
+/* Keep gcc happy */
+struct nand_chip;
+
+/**
+ * struct nand_hw_control - Control structure for hardware controller (e.g ECC generator) shared among independend devices
+ * @lock:               protection lock  
+ * @active:		the mtd device which holds the controller currently
+ */
+struct nand_hw_control {
+	spinlock_t	 lock;
+	struct nand_chip *active;
+};
 
 /**
  * struct nand_chip - NAND Private Flash Chip Data
@@ -265,12 +277,13 @@ typedef enum {
  * @bbt:		[INTERN] bad block table pointer
  * @bbt_td:		[REPLACEABLE] bad block table descriptor for flash lookup
  * @bbt_md:		[REPLACEABLE] bad block table mirror descriptor
+ * @controller:		[OPTIONAL] a pointer to a hardware controller structure which is shared among multiple independend devices
  * @priv:		[OPTIONAL] pointer to private chip date
  */
  
 struct nand_chip {
-	unsigned long 	IO_ADDR_R;
-	unsigned long 	IO_ADDR_W;
+	void  __iomem	*IO_ADDR_R;
+	void  __iomem 	*IO_ADDR_W;
 	
 	u_char		(*read_byte)(struct mtd_info *mtd);
 	void		(*write_byte)(struct mtd_info *mtd, u_char byte);
@@ -317,6 +330,7 @@ struct nand_chip {
 	uint8_t		*bbt;
 	struct nand_bbt_descr	*bbt_td;
 	struct nand_bbt_descr	*bbt_md;
+	struct nand_hw_control  *controller;
 	void		*priv;
 };
 
diff --git a/include/linux/rslib.h b/include/linux/rslib.h
new file mode 100644
index 000000000000..980c8f74d8dc
--- /dev/null
+++ b/include/linux/rslib.h
@@ -0,0 +1,105 @@
+/* 
+ * include/linux/rslib.h
+ *
+ * Overview:
+ *   Generic Reed Solomon encoder / decoder library
+ *   
+ * Copyright (C) 2004 Thomas Gleixner (tglx@linutronix.de)
+ *
+ * RS code lifted from reed solomon library written by Phil Karn
+ * Copyright 2002 Phil Karn, KA9Q
+ *
+ * $Id: rslib.h,v 1.3 2004/10/05 22:08:22 gleixner Exp $
+ *
+ * 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.
+ */
+
+#ifndef _RSLIB_H_
+#define _RSLIB_H_
+
+#include <linux/list.h>
+
+/** 
+ * struct rs_control - rs control structure
+ * 
+ * @mm:		Bits per symbol
+ * @nn:		Symbols per block (= (1<<mm)-1)
+ * @alpha_to:	log lookup table
+ * @index_of:	Antilog lookup table
+ * @genpoly:	Generator polynomial 
+ * @nroots:	Number of generator roots = number of parity symbols
+ * @fcr:	First consecutive root, index form
+ * @prim:	Primitive element, index form 
+ * @iprim:	prim-th root of 1, index form 
+ * @gfpoly:	The primitive generator polynominal 
+ * @users:	Users of this structure 
+ * @list:	List entry for the rs control list
+*/
+struct rs_control {
+	int 		mm;
+	int 		nn;
+	uint16_t	*alpha_to;
+	uint16_t	*index_of;
+	uint16_t	*genpoly;
+	int 		nroots;
+	int 		fcr;
+	int 		prim;
+	int 		iprim;
+	int		gfpoly;
+	int		users;
+	struct list_head list;
+};
+
+/* General purpose RS codec, 8-bit data width, symbol width 1-15 bit  */
+#ifdef CONFIG_REED_SOLOMON_ENC8
+int encode_rs8(struct rs_control *rs, uint8_t *data, int len, uint16_t *par,
+	       uint16_t invmsk);
+#endif
+#ifdef CONFIG_REED_SOLOMON_DEC8
+int decode_rs8(struct rs_control *rs, uint8_t *data, uint16_t *par, int len, 
+		uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk,
+	       uint16_t *corr);
+#endif
+
+/* General purpose RS codec, 16-bit data width, symbol width 1-15 bit  */
+#ifdef CONFIG_REED_SOLOMON_ENC16
+int encode_rs16(struct rs_control *rs, uint16_t *data, int len, uint16_t *par,
+		uint16_t invmsk);
+#endif
+#ifdef CONFIG_REED_SOLOMON_DEC16
+int decode_rs16(struct rs_control *rs, uint16_t *data, uint16_t *par, int len,
+		uint16_t *s, int no_eras, int *eras_pos, uint16_t invmsk,
+		uint16_t *corr);
+#endif
+
+/* Create or get a matching rs control structure */
+struct rs_control *init_rs(int symsize, int gfpoly, int fcr, int prim, 
+			   int nroots);
+
+/* Release a rs control structure */
+void free_rs(struct rs_control *rs);
+
+/** modulo replacement for galois field arithmetics
+ *
+ *  @rs:	the rs control structure
+ *  @x:		the value to reduce
+ *
+ *  where
+ *  rs->mm = number of bits per symbol	
+ *  rs->nn = (2^rs->mm) - 1
+ *  
+ *  Simple arithmetic modulo would return a wrong result for values
+ *  >= 3 * rs->nn
+*/
+static inline int rs_modnn(struct rs_control *rs, int x)
+{
+	while (x >= rs->nn) {
+		x -= rs->nn;
+		x = (x >> rs->mm) + (x & rs->nn);
+	}
+	return x;
+}
+
+#endif