aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/mtd/chips/sharp.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mtd/chips/sharp.c')
-rw-r--r--drivers/mtd/chips/sharp.c123
1 files changed, 66 insertions, 57 deletions
diff --git a/drivers/mtd/chips/sharp.c b/drivers/mtd/chips/sharp.c
index 2d26bdef82d5..36f61a6a766e 100644
--- a/drivers/mtd/chips/sharp.c
+++ b/drivers/mtd/chips/sharp.c
@@ -4,7 +4,7 @@
* Copyright 2000,2001 David A. Schleef <ds@schleef.org>
* 2000,2001 Lineo, Inc.
*
- * $Id: sharp.c,v 1.16 2005/11/07 11:14:23 gleixner Exp $
+ * $Id: sharp.c,v 1.17 2005/11/29 14:28:28 gleixner Exp $
*
* Devices supported:
* LH28F016SCT Symmetrical block flash memory, 2Mx8
@@ -160,22 +160,28 @@ struct mtd_info *sharp_probe(struct map_info *map)
return mtd;
}
+static inline void sharp_send_cmd(struct map_info *map, unsigned long cmd, unsigned long adr)
+{
+ map_word map_cmd;
+ map_cmd.x[0] = cmd;
+ map_write(map, map_cmd, adr);
+}
+
static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
{
- unsigned long tmp;
+ map_word tmp, read0, read4;
unsigned long base = 0;
- u32 read0, read4;
int width = 4;
- tmp = map_read32(map, base+0);
+ tmp = map_read(map, base+0);
- map_write32(map, CMD_READ_ID, base+0);
+ sharp_send_cmd(map, CMD_READ_ID, base+0);
- read0=map_read32(map, base+0);
- read4=map_read32(map, base+4);
- if(read0 == 0x89898989){
+ read0 = map_read(map, base+0);
+ read4 = map_read(map, base+4);
+ if(read0.x[0] == 0x89898989){
printk("Looks like sharp flash\n");
- switch(read4){
+ switch(read4.x[0]){
case 0xaaaaaaaa:
case 0xa0a0a0a0:
/* aa - LH28F016SCT-L95 2Mx8, 32 64k blocks*/
@@ -197,16 +203,16 @@ static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
return width;
#endif
default:
- printk("Sort-of looks like sharp flash, 0x%08x 0x%08x\n",
- read0,read4);
+ printk("Sort-of looks like sharp flash, 0x%08lx 0x%08lx\n",
+ read0.x[0], read4.x[0]);
}
- }else if((map_read32(map, base+0) == CMD_READ_ID)){
+ }else if((map_read(map, base+0).x[0] == CMD_READ_ID)){
/* RAM, probably */
printk("Looks like RAM\n");
- map_write32(map, tmp, base+0);
+ map_write(map, tmp, base+0);
}else{
- printk("Doesn't look like sharp flash, 0x%08x 0x%08x\n",
- read0,read4);
+ printk("Doesn't look like sharp flash, 0x%08lx 0x%08lx\n",
+ read0.x[0], read4.x[0]);
}
return 0;
@@ -215,7 +221,8 @@ static int sharp_probe_map(struct map_info *map,struct mtd_info *mtd)
/* This function returns with the chip->mutex lock held. */
static int sharp_wait(struct map_info *map, struct flchip *chip)
{
- int status, i;
+ int i;
+ map_word status;
unsigned long timeo = jiffies + HZ;
DECLARE_WAITQUEUE(wait, current);
int adr = 0;
@@ -225,12 +232,12 @@ retry:
switch(chip->state){
case FL_READY:
- map_write32(map,CMD_READ_STATUS,adr);
+ sharp_send_cmd(map, CMD_READ_STATUS, adr);
chip->state = FL_STATUS;
case FL_STATUS:
for(i=0;i<100;i++){
- status = map_read32(map,adr);
- if((status & SR_READY)==SR_READY)
+ status = map_read(map, adr);
+ if((status.x[0] & SR_READY)==SR_READY)
break;
udelay(1);
}
@@ -254,7 +261,7 @@ retry:
goto retry;
}
- map_write32(map,CMD_RESET, adr);
+ sharp_send_cmd(map, CMD_RESET, adr);
chip->state = FL_READY;
@@ -351,37 +358,39 @@ static int sharp_write_oneword(struct map_info *map, struct flchip *chip,
int timeo;
int try;
int i;
- int status = 0;
+ map_word data, status;
+ status.x[0] = 0;
ret = sharp_wait(map,chip);
for(try=0;try<10;try++){
- map_write32(map,CMD_BYTE_WRITE,adr);
+ sharp_send_cmd(map, CMD_BYTE_WRITE, adr);
/* cpu_to_le32 -> hack to fix the writel be->le conversion */
- map_write32(map,cpu_to_le32(datum),adr);
+ data.x[0] = cpu_to_le32(datum);
+ map_write(map, data, adr);
chip->state = FL_WRITING;
timeo = jiffies + (HZ/2);
- map_write32(map,CMD_READ_STATUS,adr);
+ sharp_send_cmd(map, CMD_READ_STATUS, adr);
for(i=0;i<100;i++){
- status = map_read32(map,adr);
- if((status & SR_READY)==SR_READY)
+ status = map_read(map, adr);
+ if((status.x[0] & SR_READY) == SR_READY)
break;
}
if(i==100){
printk("sharp: timed out writing\n");
}
- if(!(status&SR_ERRORS))
+ if(!(status.x[0] & SR_ERRORS))
break;
- printk("sharp: error writing byte at addr=%08lx status=%08x\n",adr,status);
+ printk("sharp: error writing byte at addr=%08lx status=%08lx\n", adr, status.x[0]);
- map_write32(map,CMD_CLEAR_STATUS,adr);
+ sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
}
- map_write32(map,CMD_RESET,adr);
+ sharp_send_cmd(map, CMD_RESET, adr);
chip->state = FL_READY;
wake_up(&chip->wq);
@@ -434,18 +443,18 @@ static int sharp_do_wait_for_ready(struct map_info *map, struct flchip *chip,
{
int ret;
unsigned long timeo;
- int status;
+ map_word status;
DECLARE_WAITQUEUE(wait, current);
- map_write32(map,CMD_READ_STATUS,adr);
- status = map_read32(map,adr);
+ sharp_send_cmd(map, CMD_READ_STATUS, adr);
+ status = map_read(map, adr);
timeo = jiffies + HZ;
while(time_before(jiffies, timeo)){
- map_write32(map,CMD_READ_STATUS,adr);
- status = map_read32(map,adr);
- if((status & SR_READY)==SR_READY){
+ sharp_send_cmd(map, CMD_READ_STATUS, adr);
+ status = map_read(map, adr);
+ if((status.x[0] & SR_READY)==SR_READY){
ret = 0;
goto out;
}
@@ -476,7 +485,7 @@ static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
{
int ret;
//int timeo;
- int status;
+ map_word status;
//int i;
//printk("sharp_erase_oneblock()\n");
@@ -486,26 +495,26 @@ static int sharp_erase_oneblock(struct map_info *map, struct flchip *chip,
sharp_unlock_oneblock(map,chip,adr);
#endif
- map_write32(map,CMD_BLOCK_ERASE_1,adr);
- map_write32(map,CMD_BLOCK_ERASE_2,adr);
+ sharp_send_cmd(map, CMD_BLOCK_ERASE_1, adr);
+ sharp_send_cmd(map, CMD_BLOCK_ERASE_2, adr);
chip->state = FL_ERASING;
ret = sharp_do_wait_for_ready(map,chip,adr);
if(ret<0)return ret;
- map_write32(map,CMD_READ_STATUS,adr);
- status = map_read32(map,adr);
+ sharp_send_cmd(map, CMD_READ_STATUS, adr);
+ status = map_read(map, adr);
- if(!(status&SR_ERRORS)){
- map_write32(map,CMD_RESET,adr);
+ if(!(status.x[0] & SR_ERRORS)){
+ sharp_send_cmd(map, CMD_RESET, adr);
chip->state = FL_READY;
//spin_unlock_bh(chip->mutex);
return 0;
}
- printk("sharp: error erasing block at addr=%08lx status=%08x\n",adr,status);
- map_write32(map,CMD_CLEAR_STATUS,adr);
+ printk("sharp: error erasing block at addr=%08lx status=%08lx\n", adr, status.x[0]);
+ sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
//spin_unlock_bh(chip->mutex);
@@ -517,20 +526,20 @@ static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
unsigned long adr)
{
int i;
- int status;
+ map_word status;
- map_write32(map,CMD_CLEAR_BLOCK_LOCKS_1,adr);
- map_write32(map,CMD_CLEAR_BLOCK_LOCKS_2,adr);
+ sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_1, adr);
+ sharp_send_cmd(map, CMD_CLEAR_BLOCK_LOCKS_2, adr);
udelay(100);
- status = map_read32(map,adr);
- printk("status=%08x\n",status);
+ status = map_read(map, adr);
+ printk("status=%08lx\n", status.x[0]);
for(i=0;i<1000;i++){
- //map_write32(map,CMD_READ_STATUS,adr);
- status = map_read32(map,adr);
- if((status & SR_READY)==SR_READY)
+ //sharp_send_cmd(map, CMD_READ_STATUS, adr);
+ status = map_read(map, adr);
+ if((status.x[0] & SR_READY) == SR_READY)
break;
udelay(100);
}
@@ -538,14 +547,14 @@ static void sharp_unlock_oneblock(struct map_info *map, struct flchip *chip,
printk("sharp: timed out unlocking block\n");
}
- if(!(status&SR_ERRORS)){
- map_write32(map,CMD_RESET,adr);
+ if(!(status.x[0] & SR_ERRORS)){
+ sharp_send_cmd(map, CMD_RESET, adr);
chip->state = FL_READY;
return;
}
- printk("sharp: error unlocking block at addr=%08lx status=%08x\n",adr,status);
- map_write32(map,CMD_CLEAR_STATUS,adr);
+ printk("sharp: error unlocking block at addr=%08lx status=%08lx\n", adr, status.x[0]);
+ sharp_send_cmd(map, CMD_CLEAR_STATUS, adr);
}
#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.