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ide: add ncq identify data for ahci sata drives 

I modified ide_identify() to include the zero-based queue length
value in word 75, and set bit 8 in word 76 to signal NCQ support
in the identify data for AHCI SATA drives.

Signed-off-by: Roland Elek <elek.roland@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Roland Elek 2010-12-14 01:34:37 +01:00 committed by Kevin Wolf
parent 2ff61ff195
commit ccf0fd8b05
2 changed files with 9 additions and 0 deletions
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7
hw/ide/core.c
View File

@ -140,6 +140,13 @@ static void ide_identify(IDEState *s)
put_le16(p + 66, 120);
put_le16(p + 67, 120);
put_le16(p + 68, 120);
if (s->ncq_queues) {
put_le16(p + 75, s->ncq_queues - 1);
/* NCQ supported */
put_le16(p + 76, (1 << 8));
}
put_le16(p + 80, 0xf0); /* ata3 -> ata6 supported */
put_le16(p + 81, 0x16); /* conforms to ata5 */
/* 14=NOP supported, 5=WCACHE supported, 0=SMART supported */

2
hw/ide/internal.h
View File

@ -447,6 +447,8 @@ struct IDEState {
int smart_errors;
uint8_t smart_selftest_count;
uint8_t *smart_selftest_data;
/* AHCI */
int ncq_queues;
};
struct IDEDMAOps {