Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2

[mv-sheeva.git] / drivers / ata / ata_piix.c

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 54961c0b2c73a58e2dc64313ff95a858bbb262d2..e5cbe80ce172a8db5ba9de325ec1a0d5db1fcce5 100644 (file)
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -446,34 +446,34 @@ static struct ata_port_info piix_port_info[] = {
        [piix_pata_mwdma] =     /* PIIX3 MWDMA only */
        {
                .flags          = PIIX_PATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
                .port_ops       = &piix_pata_ops,
        },
 
        [piix_pata_33] =        /* PIIX4 at 33MHz */
        {
                .flags          = PIIX_PATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
-               .udma_mask      = ATA_UDMA_MASK_40C,
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
+               .udma_mask      = ATA_UDMA2,
                .port_ops       = &piix_pata_ops,
        },
 
        [ich_pata_33] =         /* ICH0 - ICH at 33Mhz*/
        {
                .flags          = PIIX_PATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio 0-4 */
-               .mwdma_mask     = 0x06, /* Check: maybe 0x07  */
-               .udma_mask      = ATA_UDMA2, /* UDMA33 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA12_ONLY, /* Check: maybe MWDMA0 is ok  */
+               .udma_mask      = ATA_UDMA2,
                .port_ops       = &ich_pata_ops,
        },
 
        [ich_pata_66] =         /* ICH controllers up to 66MHz */
        {
                .flags          = PIIX_PATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio 0-4 */
-               .mwdma_mask     = 0x06, /* MWDMA0 is broken on chip */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA12_ONLY, /* MWDMA0 is broken on chip */
                .udma_mask      = ATA_UDMA4,
                .port_ops       = &ich_pata_ops,
        },
@@ -481,17 +481,17 @@ static struct ata_port_info piix_port_info[] = {
        [ich_pata_100] =
        {
                .flags          = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x06, /* mwdma1-2 */
-               .udma_mask      = ATA_UDMA5, /* udma0-5 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA12_ONLY,
+               .udma_mask      = ATA_UDMA5,
                .port_ops       = &ich_pata_ops,
        },
 
        [ich5_sata] =
        {
                .flags          = PIIX_SATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x07, /* mwdma0-2 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA2,
                .udma_mask      = ATA_UDMA6,
                .port_ops       = &piix_sata_ops,
        },
@@ -499,8 +499,8 @@ static struct ata_port_info piix_port_info[] = {
        [ich6_sata] =
        {
                .flags          = PIIX_SATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x07, /* mwdma0-2 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA2,
                .udma_mask      = ATA_UDMA6,
                .port_ops       = &piix_sata_ops,
        },
@@ -508,8 +508,8 @@ static struct ata_port_info piix_port_info[] = {
        [ich6m_sata] =
        {
                .flags          = PIIX_SATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x07, /* mwdma0-2 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA2,
                .udma_mask      = ATA_UDMA6,
                .port_ops       = &piix_sata_ops,
        },
@@ -517,8 +517,8 @@ static struct ata_port_info piix_port_info[] = {
        [ich8_sata] =
        {
                .flags          = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x07, /* mwdma0-2 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA2,
                .udma_mask      = ATA_UDMA6,
                .port_ops       = &piix_sata_ops,
        },
@@ -526,8 +526,8 @@ static struct ata_port_info piix_port_info[] = {
        [ich8_2port_sata] =
        {
                .flags          = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x07, /* mwdma0-2 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA2,
                .udma_mask      = ATA_UDMA6,
                .port_ops       = &piix_sata_ops,
        },
@@ -535,8 +535,8 @@ static struct ata_port_info piix_port_info[] = {
        [tolapai_sata] =
        {
                .flags          = PIIX_SATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x07, /* mwdma0-2 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA2,
                .udma_mask      = ATA_UDMA6,
                .port_ops       = &piix_sata_ops,
        },
@@ -544,8 +544,8 @@ static struct ata_port_info piix_port_info[] = {
        [ich8m_apple_sata] =
        {
                .flags          = PIIX_SATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x07, /* mwdma0-2 */
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA2,
                .udma_mask      = ATA_UDMA6,
                .port_ops       = &piix_sata_ops,
        },
@@ -553,9 +553,9 @@ static struct ata_port_info piix_port_info[] = {
        [piix_pata_vmw] =
        {
                .flags          = PIIX_PATA_FLAGS,
-               .pio_mask       = 0x1f, /* pio0-4 */
-               .mwdma_mask     = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
-               .udma_mask      = ATA_UDMA_MASK_40C,
+               .pio_mask       = ATA_PIO4,
+               .mwdma_mask     = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
+               .udma_mask      = ATA_UDMA2,
                .port_ops       = &piix_vmw_ops,
        },
 
@@ -1289,6 +1289,39 @@ static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,
        return map;
 }
 
+static bool piix_no_sidpr(struct ata_host *host)
+{
+       struct pci_dev *pdev = to_pci_dev(host->dev);
+
+       /*
+        * Samsung DB-P70 only has three ATA ports exposed and
+        * curiously the unconnected first port reports link online
+        * while not responding to SRST protocol causing excessive
+        * detection delay.
+        *
+        * Unfortunately, the system doesn't carry enough DMI
+        * information to identify the machine but does have subsystem
+        * vendor and device set.  As it's unclear whether the
+        * subsystem vendor/device is used only for this specific
+        * board, the port can't be disabled solely with the
+        * information; however, turning off SIDPR access works around
+        * the problem.  Turn it off.
+        *
+        * This problem is reported in bnc#441240.
+        *
+        * https://bugzilla.novell.com/show_bug.cgi?id=441420
+        */
+       if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 &&
+           pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG &&
+           pdev->subsystem_device == 0xb049) {
+               dev_printk(KERN_WARNING, host->dev,
+                          "Samsung DB-P70 detected, disabling SIDPR\n");
+               return true;
+       }
+
+       return false;
+}
+
 static int __devinit piix_init_sidpr(struct ata_host *host)
 {
        struct pci_dev *pdev = to_pci_dev(host->dev);
@@ -1302,6 +1335,10 @@ static int __devinit piix_init_sidpr(struct ata_host *host)
                if (hpriv->map[i] == IDE)
                        return 0;
 
+       /* is it blacklisted? */
+       if (piix_no_sidpr(host))
+               return 0;
+
        if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
                return 0;