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| author | Jens Arnold <amiconn@rockbox.org> | 2004-07-05 13:44:53 +0000 |
|---|---|---|
| committer | Jens Arnold <amiconn@rockbox.org> | 2004-07-05 13:44:53 +0000 |
| commit | b40591947d6fa225e12dee839a04faf59917d4e2 (patch) | |
| tree | 1451e40cf59445ab98baa9039784a375f30d77cd | |
| parent | 26440c9fd64d8c147f02ec4efb376ccb6dbb2783 (diff) | |
| download | rockbox-b40591947d6fa225e12dee839a04faf59917d4e2.tar.gz rockbox-b40591947d6fa225e12dee839a04faf59917d4e2.zip | |
Enabled assembler optimized disk reading and writing (approx. 2 times as fast)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4825 a1c6a512-1295-4272-9138-f99709370657
| -rw-r--r-- | firmware/drivers/ata.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c index ffc004572d..1394ceaf29 100644 --- a/firmware/drivers/ata.c +++ b/firmware/drivers/ata.c | |||
| @@ -30,10 +30,10 @@ | |||
| 30 | #include "string.h" | 30 | #include "string.h" |
| 31 | #include "hwcompat.h" | 31 | #include "hwcompat.h" |
| 32 | 32 | ||
| 33 | /* use plain C code in copy_read_sectors(), instead of tweaked assembler */ | 33 | /* Uncomment the matching #define to use plain C code instead if the tweaked |
| 34 | #define PREFER_C | 34 | * assembler code for disk reading or writing should cause problems. */ |
| 35 | /* use plain C code in copy_write_sectors(), instead of tweaked assembler */ | 35 | /* #define PREFER_C_READING */ |
| 36 | #define PREFER_C_WRITING | 36 | /* #define PREFER_C_WRITING */ |
| 37 | 37 | ||
| 38 | #define SECTOR_SIZE 512 | 38 | #define SECTOR_SIZE 512 |
| 39 | #define ATA_DATA (*((volatile unsigned short*)0x06104100)) | 39 | #define ATA_DATA (*((volatile unsigned short*)0x06104100)) |
| @@ -176,7 +176,7 @@ static void copy_read_sectors(unsigned char* buf, | |||
| 176 | __attribute__ ((section (".icode"))); | 176 | __attribute__ ((section (".icode"))); |
| 177 | static void copy_read_sectors(unsigned char* buf, int wordcount) | 177 | static void copy_read_sectors(unsigned char* buf, int wordcount) |
| 178 | { | 178 | { |
| 179 | #ifdef PREFER_C | 179 | #ifdef PREFER_C_READING |
| 180 | unsigned short tmp = 0; | 180 | unsigned short tmp = 0; |
| 181 | 181 | ||
| 182 | if ( (unsigned int)buf & 1) | 182 | if ( (unsigned int)buf & 1) |