linux-kernel - [ 05/46] libata: ahci: Add support for Enmotus Bobcat device.

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Date:	Thu, 24 Jan 2013 13:12:43 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk,
	Hugh Daschbach <hugh.daschbach@...otus.com>,
	Jeff Garzik <jgarzik@...hat.com>
Subject: [ 05/46] libata: ahci: Add support for Enmotus Bobcat device.

3.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hugh Daschbach <hugh.daschbach@...otus.com>

commit 7f9c9f8e24590e7dcd26ca408458c43df5b83e61 upstream.

Silicon does not support standard AHCI BAR assignment.  Add
vendor/device exception to force BAR 2.

Signed-off-by: Hugh Daschbach <hugh.daschbach@...otus.com>
Signed-off-by: Jeff Garzik <jgarzik@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/ata/ahci.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -53,6 +53,7 @@
 
 enum {
 	AHCI_PCI_BAR_STA2X11	= 0,
+	AHCI_PCI_BAR_ENMOTUS	= 2,
 	AHCI_PCI_BAR_STANDARD	= 5,
 };
 
@@ -410,6 +411,9 @@ static const struct pci_device_id ahci_p
 	{ PCI_VDEVICE(ASMEDIA, 0x0611), board_ahci },	/* ASM1061 */
 	{ PCI_VDEVICE(ASMEDIA, 0x0612), board_ahci },	/* ASM1062 */
 
+	/* Enmotus */
+	{ PCI_DEVICE(0x1c44, 0x8000), board_ahci },
+
 	/* Generic, PCI class code for AHCI */
 	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
 	  PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci },
@@ -1098,9 +1102,11 @@ static int ahci_init_one(struct pci_dev
 		dev_info(&pdev->dev,
 			 "PDC42819 can only drive SATA devices with this driver\n");
 
-	/* The Connext uses non-standard BAR */
+	/* Both Connext and Enmotus devices use non-standard BARs */
 	if (pdev->vendor == PCI_VENDOR_ID_STMICRO && pdev->device == 0xCC06)
 		ahci_pci_bar = AHCI_PCI_BAR_STA2X11;
+	else if (pdev->vendor == 0x1c44 && pdev->device == 0x8000)
+		ahci_pci_bar = AHCI_PCI_BAR_ENMOTUS;
 
 	/* acquire resources */
 	rc = pcim_enable_device(pdev);


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