From: Tejun Heo <htejun@gmail.com>
To: jgarzik@pobox.com, alan@lxorguk.ukuu.org.uk, lkml@rtr.ca,
axboe@suse.de, forrest.zhao@intel.com, linux-ide@vger.kernel.org
Cc: Tejun Heo <htejun@gmail.com>
Subject: [PATCH 02/12] libata: add ata_id_has_sata() and use it in ata_id_has_ncq()
Date: Mon, 17 Jul 2006 15:52:31 +0900 [thread overview]
Message-ID: <11531191512856-git-send-email-htejun@gmail.com> (raw)
In-Reply-To: <11531191512028-git-send-email-htejun@gmail.com>
If word 76 is 0 or 0xffff, all SATA IDENTIFY words are invalid. Add
ata_id_has_sata() for this test and use it in ata_id_has_ncq().
Signed-off-by: Tejun Heo <htejun@gmail.com>
---
include/linux/ata.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
bd18162e08a1508a802a188d6cec69ac3cd5bc8b
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 3671af8..a7798c3 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -286,7 +286,8 @@ #define ata_id_has_wcache(id) ((id)[82]
#define ata_id_has_pm(id) ((id)[82] & (1 << 3))
#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
#define ata_id_has_dma(id) ((id)[49] & (1 << 8))
-#define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
+#define ata_id_has_sata(id) ((id)[76] && (id)[76] != 0xffff)
+#define ata_id_has_ncq(id) (ata_id_has_sata(id) && ((id)[76] & (1 << 8)))
#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
#define ata_id_removeable(id) ((id)[0] & (1 << 7))
#define ata_id_has_dword_io(id) ((id)[50] & (1 << 0))
--
1.3.2
next prev parent reply other threads:[~2006-07-17 6:51 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-17 6:52 [PATCHSET] libata: implement runtime link powersave Tejun Heo
2006-07-17 6:52 ` Tejun Heo [this message]
2006-07-17 6:52 ` [PATCH 04/12] libata: implement ata_all_ports list Tejun Heo
2006-07-19 19:34 ` Jeff Garzik
2006-07-17 6:52 ` [PATCH 01/12] libata: add msec_to_jiffies() Tejun Heo
2006-07-17 6:52 ` [PATCH 03/12] libata: add more SATA specific constants and macros to ata.h Tejun Heo
2006-07-19 19:32 ` Jeff Garzik
2006-07-17 6:52 ` [PATCH 08/12] libata: implement interface power management infrastructure Tejun Heo
2006-07-19 19:45 ` Jeff Garzik
2006-07-24 8:02 ` Tejun Heo
2006-07-17 6:52 ` [PATCH 11/12] ahci: implement link powersave Tejun Heo
2006-07-19 19:51 ` Jeff Garzik
2006-07-17 6:52 ` [PATCH 10/12] libata: implement standard powersave methods Tejun Heo
2006-07-19 19:50 ` Jeff Garzik
2006-07-17 6:52 ` [PATCH 05/12] libata: make counting functions global Tejun Heo
2006-07-17 6:52 ` [PATCH 09/12] libata: implement powersave timer Tejun Heo
2006-07-19 19:48 ` Jeff Garzik
2006-07-19 20:22 ` Jens Axboe
2006-07-24 7:27 ` Tejun Heo
2006-07-25 8:01 ` Jens Axboe
2006-07-17 6:52 ` [PATCH 07/12] libata: implement sata_update_scontrol() Tejun Heo
2006-07-19 19:35 ` Jeff Garzik
2006-07-17 6:52 ` [PATCH 06/12] libata: add ata_port_nr_ready() Tejun Heo
2006-07-17 6:52 ` [PATCH 12/12] sata_sil24: implement link powersave Tejun Heo
2006-07-19 19:38 ` [PATCHSET] libata: implement runtime " Jeff Garzik
2006-07-24 7:33 ` Tejun Heo
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