X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fscsi%2Fata_piix.c;h=deec0cef88d92bcb007c9b28c514948b3c700758;hb=67d2c36e901403bb97cb79ddb44d702c3284d0ba;hp=3be546439252332131fac6aca81cbdea71d9934a;hpb=fae6ec69c84d71b1d5bda9ede1a262c1681684aa;p=~andy%2Flinux

diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 3be54643925..deec0cef88d 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -1,24 +1,42 @@
 /*
-
-    ata_piix.c - Intel PATA/SATA controllers
-
-    Maintained by:  Jeff Garzik <jgarzik@pobox.com>
-    		    Please ALWAYS copy linux-ide@vger.kernel.org
-		    on emails.
-
-
-	Copyright 2003-2004 Red Hat Inc
-	Copyright 2003-2004 Jeff Garzik
-
-
-	Copyright header from piix.c:
-
-    Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
-    Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
-    Copyright (C) 2003 Red Hat Inc <alan@redhat.com>
-
-    May be copied or modified under the terms of the GNU General Public License
-
+ *    ata_piix.c - Intel PATA/SATA controllers
+ *
+ *    Maintained by:  Jeff Garzik <jgarzik@pobox.com>
+ *    		    Please ALWAYS copy linux-ide@vger.kernel.org
+ *		    on emails.
+ *
+ *
+ *	Copyright 2003-2005 Red Hat Inc
+ *	Copyright 2003-2005 Jeff Garzik
+ *
+ *
+ *	Copyright header from piix.c:
+ *
+ *  Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
+ *  Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
+ *  Copyright (C) 2003 Red Hat Inc <alan@redhat.com>
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2, or (at your option)
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; see the file COPYING.  If not, write to
+ *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ *  libata documentation is available via 'make {ps|pdf}docs',
+ *  as Documentation/DocBook/libata.*
+ *
+ *  Hardware documentation available at http://developer.intel.com/
+ *
  */
 
 #include <linux/kernel.h>
@@ -32,12 +50,13 @@
 #include <linux/libata.h>
 
 #define DRV_NAME	"ata_piix"
-#define DRV_VERSION	"1.03"
+#define DRV_VERSION	"1.04"
 
 enum {
 	PIIX_IOCFG		= 0x54, /* IDE I/O configuration register */
 	ICH5_PMR		= 0x90, /* port mapping register */
 	ICH5_PCS		= 0x92,	/* port control and status */
+	PIIX_SCC		= 0x0A, /* sub-class code register */
 
 	PIIX_FLAG_AHCI		= (1 << 28), /* AHCI possible */
 	PIIX_FLAG_CHECKINTR	= (1 << 29), /* make sure PCI INTx enabled */
@@ -62,6 +81,8 @@ enum {
 	ich6_sata_rm		= 4,
 	ich7_sata		= 5,
 	esb2_sata		= 6,
+
+	PIIX_AHCI_DEVICE	= 6,
 };
 
 static int piix_init_one (struct pci_dev *pdev,
@@ -562,8 +583,7 @@ static void pci_enable_intx(struct pci_dev *pdev)
 #define AHCI_ENABLE (1 << 31)
 static int piix_disable_ahci(struct pci_dev *pdev)
 {
-	void *mmio;
-	unsigned long addr;
+	void __iomem *mmio;
 	u32 tmp;
 	int rc = 0;
 
@@ -571,14 +591,14 @@ static int piix_disable_ahci(struct pci_dev *pdev)
 	 * works because this device is usually set up by BIOS.
 	 */
 
-	addr = pci_resource_start(pdev, AHCI_PCI_BAR);
-	if (!addr || !pci_resource_len(pdev, AHCI_PCI_BAR))
+	if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
+	    !pci_resource_len(pdev, AHCI_PCI_BAR))
 		return 0;
-	
-	mmio = ioremap(addr, 64);
+
+	mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
 	if (!mmio)
 		return -ENOMEM;
-	
+
 	tmp = readl(mmio + AHCI_GLOBAL_CTL);
 	if (tmp & AHCI_ENABLE) {
 		tmp &= ~AHCI_ENABLE;
@@ -588,8 +608,8 @@ static int piix_disable_ahci(struct pci_dev *pdev)
 		if (tmp & AHCI_ENABLE)
 			rc = -EIO;
 	}
-	
-	iounmap(mmio);
+
+	pci_iounmap(pdev, mmio);
 	return rc;
 }
 
@@ -626,9 +646,13 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 	port_info[1] = NULL;
 
 	if (port_info[0]->host_flags & PIIX_FLAG_AHCI) {
-		int rc = piix_disable_ahci(pdev);
-		if (rc)
-			return rc;
+		u8 tmp;
+		pci_read_config_byte(pdev, PIIX_SCC, &tmp);
+		if (tmp == PIIX_AHCI_DEVICE) {
+			int rc = piix_disable_ahci(pdev);
+			if (rc)
+				return rc;
+		}
 	}
 
 	if (port_info[0]->host_flags & PIIX_FLAG_COMBINED) {