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Added acoustic management, power management and read look-ahead.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4230 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Björn Stenberg 2004-01-14 13:15:19 +00:00
parent d2b625f818
commit a53afc0330
1 changed files with 44 additions and 1 deletions
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45
firmware/drivers/ata.c
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@ -69,6 +69,7 @@
#define CMD_STANDBY 0xE2
#define CMD_IDENTIFY 0xEC
#define CMD_SLEEP 0xE6
#define CMD_SET_FEATURES 0xEF
#define CMD_SECURITY_FREEZE_LOCK 0xF5
#define Q_SLEEP 0
@ -773,6 +774,44 @@ static int set_multiple_mode(int sectors)
return 0;
}
static int set_features(void)
{
struct {
unsigned char id_word;
unsigned char id_bit;
unsigned char subcommand;
unsigned char parameter;
} features[] = {
{ 83, 3, 0x05, 1 }, /* power management: lowest power */
{ 83, 9, 0x42, 0x80 }, /* acoustic management: lowest noise */
{ 82, 6, 0xaa, 0 }, /* enable read look-ahead */
{ 0, 0, 0, 0 } /* <end of list> */
};
int i;
ATA_SELECT = ata_device;
if (!wait_for_rdy()) {
DEBUGF("set_features() - not RDY\n");
return -1;
}
for (i=0; features[i].id_word; i++) {
if (identify_info[features[i].id_word] & (1 << features[i].id_bit)) {
ATA_FEATURE = features[i].subcommand;
ATA_NSECTOR = features[i].parameter;
ATA_COMMAND = CMD_SET_FEATURES;
if (!wait_for_rdy()) {
DEBUGF("set_features() - CMD failed\n");
return -2 - i;
}
}
}
return 0;
}
unsigned short* ata_get_identify(void)
{
return identify_info;
@ -842,6 +881,10 @@ int ata_init(void)
multisectors = identify_info[47] & 0xff;
DEBUGF("ata: %d sectors per ata request\n",multisectors);
rc = set_features();
if (rc)
return -60 + rc;
queue_init(&ata_queue);
last_disk_activity = current_tick;
@ -851,7 +894,7 @@ int ata_init(void)
}
rc = set_multiple_mode(multisectors);
if (rc)
return -60 + rc;
return -70 + rc;
return 0;
}