From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: [PATCH 1/3] libata: implement dev->acpi_init_gtm Date: Sat, 03 Nov 2007 00:20:10 +0900 Message-ID: <472B402A.4030009@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from wa-out-1112.google.com ([209.85.146.181]:21961 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754509AbXKBPUU (ORCPT ); Fri, 2 Nov 2007 11:20:20 -0400 Received: by wa-out-1112.google.com with SMTP id v27so979803wah for ; Fri, 02 Nov 2007 08:20:18 -0700 (PDT) Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jeff Garzik , IDE/ATA development list , Alan Cox Add dev->acpi_init_gtm and store initial GTM values on host initialization. If the field is valid, ATA_PFLAG_INIT_GTM_VALID flag is set. This is to remember BIOS/firmware programmed initial timing for later use before reset and mode configuration modify it. Signed-off-by: Tejun Heo --- drivers/ata/libata-acpi.c | 3 +++ include/linux/libata.h | 2 ++ 2 files changed, 5 insertions(+) Index: work/drivers/ata/libata-acpi.c =================================================================== --- work.orig/drivers/ata/libata-acpi.c +++ work/drivers/ata/libata-acpi.c @@ -94,6 +94,9 @@ static void ata_acpi_associate_ide_port( dev->acpi_handle = acpi_get_child(ap->acpi_handle, i); } + + if (ata_acpi_gtm(ap, &ap->acpi_init_gtm) == 0) + ap->pflags |= ATA_PFLAG_INIT_GTM_VALID; } static void ata_acpi_handle_hotplug(struct ata_port *ap, struct kobject *kobj, Index: work/include/linux/libata.h =================================================================== --- work.orig/include/linux/libata.h +++ work/include/linux/libata.h @@ -209,6 +209,7 @@ enum { ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ ATA_PFLAG_GTM_VALID = (1 << 19), /* acpi_gtm data valid */ + ATA_PFLAG_INIT_GTM_VALID = (1 << 20), /* initial gtm data valid */ /* struct ata_queued_cmd flags */ ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ @@ -633,6 +634,7 @@ struct ata_port { #ifdef CONFIG_ATA_ACPI acpi_handle acpi_handle; struct ata_acpi_gtm acpi_gtm; + struct ata_acpi_gtm acpi_init_gtm; #endif u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ };