Patchwork ata: make DVD drive recognisable on systems with Intel Sandybridge CPT chipset

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Submitter Ming Lei
Date Sept. 26, 2011, 7:23 a.m.
Message ID <CACVXFVMWn4o3WKznydUqdhfZK2xTQ-+=SFqYtP0J4DzagWphcQ@mail.gmail.com>
Download mbox | patch
Permalink /patch/116371/
State Not Applicable
Delegated to: David Miller
Headers show

Comments

Ming Lei - Sept. 26, 2011, 7:23 a.m.
Hi Tejun,

On Mon, Sep 26, 2011 at 2:51 PM, Ming Lei <ming.lei@canonical.com> wrote:
> Hi,
>
> On Sun, Sep 25, 2011 at 8:03 AM, Tejun Heo <htejun@gmail.com> wrote:
>> Sure I can do that but it would be better if you can revise your
>> patch.  Please take a look at how different ops are mapped to
>> different device IDs.  You just need to create another variant to be
>> mapped to the problematic device IDs.
>
> OK， I will do it.

How about this one below?



thanks,
--
Ming Lei
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Patch

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 43107e9..b35086b 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -147,6 +147,7 @@  enum piix_controller_ids {
 	ich8m_apple_sata,	/* locks up on second port enable */
 	tolapai_sata,
 	piix_pata_vmw,			/* PIIX4 for VMware, spurious DMA_ERR */
+	ich8_sata_snb,
 };

 struct piix_map_db {
@@ -298,7 +299,7 @@  static const struct pci_device_id piix_pci_tbl[] = {
 	/* SATA Controller IDE (PCH) */
 	{ 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
 	/* SATA Controller IDE (CPT) */
-	{ 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
+	{ 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
 	/* SATA Controller IDE (CPT) */
 	{ 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
 	/* SATA Controller IDE (CPT) */
@@ -335,6 +336,11 @@  static struct scsi_host_template piix_sht = {
 	ATA_BMDMA_SHT(DRV_NAME),
 };

+static struct ata_port_operations piix_sata_snb_ops = {
+	.inherits		= &ata_bmdma_port_ops,
+	.sff_irq_check		= piix_irq_check,
+};
+
 static struct ata_port_operations piix_sata_ops = {
 	.inherits		= &ata_bmdma32_port_ops,
 	.sff_irq_check		= piix_irq_check,
@@ -478,6 +484,7 @@  static const struct piix_map_db *piix_map_db_table[] = {
 	[ich8_2port_sata]	= &ich8_2port_map_db,
 	[ich8m_apple_sata]	= &ich8m_apple_map_db,
 	[tolapai_sata]		= &tolapai_map_db,
+	[ich8_sata_snb]		= &ich8_map_db,
 };

 static struct ata_port_info piix_port_info[] = {
@@ -606,6 +613,15 @@  static struct ata_port_info piix_port_info[] = {
 		.port_ops	= &piix_vmw_ops,
 	},

+	[ich8_sata_snb] =
+	{
+		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
+		.pio_mask	= ATA_PIO4,
+		.mwdma_mask	= ATA_MWDMA2,
+		.udma_mask	= ATA_UDMA6,
+		.port_ops	= &piix_sata_snb_ops,
+	},
+
 };

 static struct pci_bits piix_enable_bits[] = {