From ccf0fd8b056dec1fa610842dc3eb2f560ca65753 Mon Sep 17 00:00:00 2001 From: Roland Elek Date: Tue, 14 Dec 2010 01:34:37 +0100 Subject: [PATCH] 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 Signed-off-by: Kevin Wolf --- hw/ide/core.c | 7 +++++++ hw/ide/internal.h | 2 ++ 2 files changed, 9 insertions(+) diff --git a/hw/ide/core.c b/hw/ide/core.c index 228911dc8c..9e1d4e6717 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -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 */ diff --git a/hw/ide/internal.h b/hw/ide/internal.h index aadb505a1f..697c3b4dc1 100644 --- a/hw/ide/internal.h +++ b/hw/ide/internal.h @@ -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 { -- 2.11.0