mirror of
git://projects.qi-hardware.com/xburst-tools.git
synced 2024-11-01 14:14:38 +02:00
qi-glamo-mmc-multiblock-read.patch
Improve glamo-mmc so that it uses MMC_READ_MULTIPLE_BLOCK and copes with 64 blocks in one command (and STOP sent after each set), instead of sending a new command per-block Signed-off-by: Andy Green <andy@openmoko.com>
This commit is contained in:
parent
f46dc9e4ab
commit
cff19a41ce
@ -400,7 +400,7 @@ const struct board_api board_api_gta02 = {
|
|||||||
"rootfstype=ext3 " \
|
"rootfstype=ext3 " \
|
||||||
"root=/dev/mmcblk0p1 " \
|
"root=/dev/mmcblk0p1 " \
|
||||||
"console=ttySAC2,115200 " \
|
"console=ttySAC2,115200 " \
|
||||||
"loglevel=8 " \
|
"loglevel=4 " \
|
||||||
"init=/sbin/init "\
|
"init=/sbin/init "\
|
||||||
"ro"
|
"ro"
|
||||||
},
|
},
|
||||||
@ -420,7 +420,7 @@ const struct board_api board_api_gta02 = {
|
|||||||
"rootfstype=jffs2 " \
|
"rootfstype=jffs2 " \
|
||||||
"root=/dev/mtdblock6 " \
|
"root=/dev/mtdblock6 " \
|
||||||
"console=ttySAC2,115200 " \
|
"console=ttySAC2,115200 " \
|
||||||
"loglevel=3 " \
|
"loglevel=8 " \
|
||||||
"init=/sbin/init "\
|
"init=/sbin/init "\
|
||||||
"ro"
|
"ro"
|
||||||
},
|
},
|
||||||
|
@ -47,6 +47,9 @@ static int mmc_ready = 0;
|
|||||||
//static int wide = 0;
|
//static int wide = 0;
|
||||||
static enum card_type card_type = CARDTYPE_NONE;
|
static enum card_type card_type = CARDTYPE_NONE;
|
||||||
|
|
||||||
|
|
||||||
|
#define MULTI_READ_BLOCKS_PER_COMMAND 64
|
||||||
|
|
||||||
int mmc_read(unsigned long src, u8 *dst, int size);
|
int mmc_read(unsigned long src, u8 *dst, int size);
|
||||||
|
|
||||||
#define UNSTUFF_BITS(resp,start,size) \
|
#define UNSTUFF_BITS(resp,start,size) \
|
||||||
@ -422,6 +425,7 @@ int mmc_read(unsigned long src, u8 *dst, int size)
|
|||||||
int resp;
|
int resp;
|
||||||
u8 response[16];
|
u8 response[16];
|
||||||
int size_original = size;
|
int size_original = size;
|
||||||
|
int lump;
|
||||||
|
|
||||||
if (((int)dst) & 1) {
|
if (((int)dst) & 1) {
|
||||||
puts("Bad align on dst\n");
|
puts("Bad align on dst\n");
|
||||||
@ -435,18 +439,23 @@ int mmc_read(unsigned long src, u8 *dst, int size)
|
|||||||
return resp;
|
return resp;
|
||||||
|
|
||||||
while (size) {
|
while (size) {
|
||||||
|
/* glamo mmc times out as this increases too much */
|
||||||
|
lump = MULTI_READ_BLOCKS_PER_COMMAND;
|
||||||
|
if (lump > size)
|
||||||
|
lump = size;
|
||||||
|
|
||||||
switch (card_type) {
|
switch (card_type) {
|
||||||
case CARDTYPE_SDHC: /* block addressing */
|
case CARDTYPE_SDHC: /* block addressing */
|
||||||
resp = mmc_cmd(MMC_READ_SINGLE_BLOCK,
|
resp = mmc_cmd(MMC_READ_MULTIPLE_BLOCK,
|
||||||
src,
|
src,
|
||||||
MMC_CMD_ADTC | MMC_RSP_R1 |
|
MMC_CMD_ADTC | MMC_RSP_R1 |
|
||||||
MMC_DATA_READ, MMC_BLOCK_SIZE, 1, 0,
|
MMC_DATA_READ, MMC_BLOCK_SIZE, lump, 1,
|
||||||
(u16 *)&response[0]);
|
(u16 *)&response[0]);
|
||||||
break;
|
break;
|
||||||
default: /* byte addressing */
|
default: /* byte addressing */
|
||||||
resp = mmc_cmd(MMC_READ_SINGLE_BLOCK, src * MMC_BLOCK_SIZE,
|
resp = mmc_cmd(MMC_READ_MULTIPLE_BLOCK, src * MMC_BLOCK_SIZE,
|
||||||
MMC_CMD_ADTC | MMC_RSP_R1 | MMC_DATA_READ,
|
MMC_CMD_ADTC | MMC_RSP_R1 | MMC_DATA_READ,
|
||||||
MMC_BLOCK_SIZE, 1, 0,
|
MMC_BLOCK_SIZE, lump, 1,
|
||||||
(u16 *)&response[0]);
|
(u16 *)&response[0]);
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
@ -459,14 +468,22 @@ int mmc_read(unsigned long src, u8 *dst, int size)
|
|||||||
0xff00) | 2, GLAMO_REG_CLOCK_GEN8);
|
0xff00) | 2, GLAMO_REG_CLOCK_GEN8);
|
||||||
|
|
||||||
|
|
||||||
do_pio_read((u16 *)dst, MMC_BLOCK_SIZE >> 1);
|
do_pio_read((u16 *)dst, lump * MMC_BLOCK_SIZE >> 1);
|
||||||
|
|
||||||
if (size)
|
if (size)
|
||||||
size--;
|
size -= lump;
|
||||||
|
|
||||||
|
dst += lump * MMC_BLOCK_SIZE;
|
||||||
|
src += lump;
|
||||||
|
|
||||||
|
resp = mmc_cmd(MMC_STOP_TRANSMISSION, 0,
|
||||||
|
MMC_CMD_AC | MMC_RSP_R1B, 0, 0, 0,
|
||||||
|
(u16 *)&response[0]);
|
||||||
|
if (resp)
|
||||||
|
return resp;
|
||||||
|
|
||||||
dst += MMC_BLOCK_SIZE;
|
|
||||||
src++;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
return size_original;
|
return size_original;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
Loading…
Reference in New Issue
Block a user