From patchwork Fri Nov 19 02:56:47 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [05/11] ide: add ncq identify data for ahci sata drives Date: Thu, 18 Nov 2010 16:56:47 -0000 From: Alexander Graf X-Patchwork-Id: 72187 Message-Id: <1290135413-21462-6-git-send-email-agraf@suse.de> To: QEMU-devel Developers Cc: Kevin Wolf , Joerg Roedel , Gerd Hoffmann , Stefan Hajnoczi , tj@kernel.org, Roland Elek , Sebastian Herbszt From: Roland Elek 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 --- hw/ide/core.c | 7 +++++++ hw/ide/internal.h | 2 ++ 2 files changed, 9 insertions(+), 0 deletions(-) diff --git a/hw/ide/core.c b/hw/ide/core.c index 04190d2..073c038 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -147,6 +147,13 @@ 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 4bee636..1261eea 100644 --- a/hw/ide/internal.h +++ b/hw/ide/internal.h @@ -451,6 +451,8 @@ struct IDEState { int smart_errors; uint8_t smart_selftest_count; uint8_t *smart_selftest_data; + /* AHCI */ + int ncq_queues; }; /* This struct represents a device that uses an IDE bus, but requires