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Added support for reading/writing 256 sectors

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1736 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Björn Stenberg 2002-08-14 16:37:28 +00:00
parent 9ab90eabd1
commit 63457c5c63
2 changed files with 14 additions and 7 deletions
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17
firmware/drivers/ata.c
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@ -136,10 +136,10 @@ static int wait_for_end_of_transfer(void)
}
int ata_read_sectors(unsigned long start,
unsigned char count,
int count,
void* buf) __attribute__ ((section (".icode")));
int ata_read_sectors(unsigned long start,
unsigned char count,
int count,
void* buf)
{
int i;
@ -169,7 +169,11 @@ int ata_read_sectors(unsigned long start,
led(true);
ATA_NSECTOR = count;
if ( count == 256 )
ATA_NSECTOR = 0; /* 0 means 256 sectors */
else
ATA_NSECTOR = (unsigned char)count;
ATA_SECTOR = start & 0xff;
ATA_LCYL = (start >> 8) & 0xff;
ATA_HCYL = (start >> 16) & 0xff;
@ -215,7 +219,7 @@ int ata_read_sectors(unsigned long start,
}
int ata_write_sectors(unsigned long start,
unsigned char count,
int count,
void* buf)
{
int i;
@ -242,7 +246,10 @@ int ata_write_sectors(unsigned long start,
led(true);
ATA_NSECTOR = count;
if ( count == 256 )
ATA_NSECTOR = 0; /* 0 means 256 sectors */
else
ATA_NSECTOR = (unsigned char)count;
ATA_SECTOR = start & 0xff;
ATA_LCYL = (start >> 8) & 0xff;
ATA_HCYL = (start >> 16) & 0xff;

4
firmware/drivers/ata.h
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@ -40,10 +40,10 @@ extern int ata_hard_reset(void);
extern int ata_soft_reset(void);
extern int ata_init(void);
extern int ata_read_sectors(unsigned long start,
unsigned char count,
int count,
void* buf);
extern int ata_write_sectors(unsigned long start,
unsigned char count,
int count,
void* buf);
#endif