-/* Common Flash Interface structures
+/* Common Flash Interface structures
* See http://support.intel.com/design/flash/technote/index.htm
- * $Id: cfi.h,v 1.50 2004/11/20 12:46:51 dwmw2 Exp $
+ * $Id: cfi.h,v 1.57 2005/11/15 23:28:17 tpoynor Exp $
*/
#ifndef __MTD_CFI_H__
#define __MTD_CFI_H__
#include <linux/config.h>
-#include <linux/version.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/interrupt.h>
}
-/* NB: these values must represents the number of bytes needed to meet the
- * device type (x8, x16, x32). Eg. a 32 bit device is 4 x 8 bytes.
+/* NB: these values must represents the number of bytes needed to meet the
+ * device type (x8, x16, x32). Eg. a 32 bit device is 4 x 8 bytes.
* These numbers are used in calculations.
*/
#define CFI_DEVICETYPE_X8 (8 / 8)
uint8_t extra[0];
} __attribute__((packed));
+struct cfi_intelext_otpinfo {
+ uint32_t ProtRegAddr;
+ uint16_t FactGroups;
+ uint8_t FactProtRegSize;
+ uint16_t UserGroups;
+ uint8_t UserProtRegSize;
+} __attribute__((packed));
+
struct cfi_intelext_blockinfo {
uint16_t NumIdentBlocks;
uint16_t BlockSize;
struct cfi_intelext_blockinfo BlockTypes[1];
} __attribute__((packed));
+struct cfi_intelext_programming_regioninfo {
+ uint8_t ProgRegShift;
+ uint8_t Reserved1;
+ uint8_t ControlValid;
+ uint8_t Reserved2;
+ uint8_t ControlInvalid;
+ uint8_t Reserved3;
+} __attribute__((packed));
+
/* Vendor-Specific PRI for AMD/Fujitsu Extended Command Set (0x0002) */
struct cfi_pri_amdstd {
/*
* Transforms the CFI command for the given geometry (bus width & interleave).
* It looks too long to be inline, but in the common case it should almost all
- * get optimised away.
+ * get optimised away.
*/
-static inline map_word cfi_build_cmd(u_char cmd, struct map_info *map, struct cfi_private *cfi)
+static inline map_word cfi_build_cmd(u_long cmd, struct map_info *map, struct cfi_private *cfi)
{
map_word val = { {0} };
int wordwidth, words_per_bus, chip_mode, chips_per_word;
unsigned long onecmd;
int i;
- /* We do it this way to give the compiler a fighting chance
+ /* We do it this way to give the compiler a fighting chance
of optimising away all the crap for 'bankwidth' larger than
an unsigned long, in the common case where that support is
disabled */
wordwidth = map_bankwidth(map);
words_per_bus = 1;
}
-
+
chip_mode = map_bankwidth(map) / cfi_interleave(cfi);
chips_per_word = wordwidth * cfi_interleave(cfi) / map_bankwidth(map);
break;
}
- /* Now replicate it across the size of an unsigned long, or
+ /* Now replicate it across the size of an unsigned long, or
just to the bus width as appropriate */
switch (chips_per_word) {
default: BUG();
;
}
- /* And finally, for the multi-word case, replicate it
+ /* And finally, for the multi-word case, replicate it
in all words in the structure */
for (i=0; i < words_per_bus; i++) {
val.x[i] = onecmd;
}
#define CMD(x) cfi_build_cmd((x), map, cfi)
+
+static inline unsigned long cfi_merge_status(map_word val, struct map_info *map,
+ struct cfi_private *cfi)
+{
+ int wordwidth, words_per_bus, chip_mode, chips_per_word;
+ unsigned long onestat, res = 0;
+ int i;
+
+ /* We do it this way to give the compiler a fighting chance
+ of optimising away all the crap for 'bankwidth' larger than
+ an unsigned long, in the common case where that support is
+ disabled */
+ if (map_bankwidth_is_large(map)) {
+ wordwidth = sizeof(unsigned long);
+ words_per_bus = (map_bankwidth(map)) / wordwidth; // i.e. normally 1
+ } else {
+ wordwidth = map_bankwidth(map);
+ words_per_bus = 1;
+ }
+
+ chip_mode = map_bankwidth(map) / cfi_interleave(cfi);
+ chips_per_word = wordwidth * cfi_interleave(cfi) / map_bankwidth(map);
+
+ onestat = val.x[0];
+ /* Or all status words together */
+ for (i=1; i < words_per_bus; i++) {
+ onestat |= val.x[i];
+ }
+
+ res = onestat;
+ switch(chips_per_word) {
+ default: BUG();
+#if BITS_PER_LONG >= 64
+ case 8:
+ res |= (onestat >> (chip_mode * 32));
+#endif
+ case 4:
+ res |= (onestat >> (chip_mode * 16));
+ case 2:
+ res |= (onestat >> (chip_mode * 8));
+ case 1:
+ ;
+ }
+
+ /* Last, determine what the bit-pattern should be for a single
+ device, according to chip mode and endianness... */
+ switch (chip_mode) {
+ case 1:
+ break;
+ case 2:
+ res = cfi16_to_cpu(res);
+ break;
+ case 4:
+ res = cfi32_to_cpu(res);
+ break;
+ default: BUG();
+ }
+ return res;
+}
+
+#define MERGESTATUS(x) cfi_merge_status((x), map, cfi)
+
+
/*
* Sends a CFI command to a bank of flash for the given geometry.
*
}
}
+static inline uint16_t cfi_read_query16(struct map_info *map, uint32_t addr)
+{
+ map_word val = map_read(map, addr);
+
+ if (map_bankwidth_is_1(map)) {
+ return val.x[0] & 0xff;
+ } else if (map_bankwidth_is_2(map)) {
+ return cfi16_to_cpu(val.x[0]);
+ } else {
+ /* No point in a 64-bit byteswap since that would just be
+ swapping the responses from different chips, and we are
+ only interested in one chip (a representative sample) */
+ return cfi32_to_cpu(val.x[0]);
+ }
+}
+
static inline void cfi_udelay(int us)
{
if (us >= 1000) {
}
}
-static inline void cfi_spin_lock(spinlock_t *mutex)
-{
- spin_lock_bh(mutex);
-}
-
-static inline void cfi_spin_unlock(spinlock_t *mutex)
-{
- spin_unlock_bh(mutex);
-}
-
struct cfi_extquery *cfi_read_pri(struct map_info *map, uint16_t adr, uint16_t size,
const char* name);
struct cfi_fixup {
git://git.onelab.eu / linux-2.6.git / blobdiff