Merge branch 'linus' into x86/xen

12 files changed, 563 insertions, 219 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 97f83fb2ee2e..966ab401e523 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -89,6 +89,7 @@ enum {
         board_ahci_sb600        = 3,
         board_ahci_mv           = 4,
         board_ahci_sb700        = 5,
+        board_ahci_mcp65        = 6,
 
         /* global controller registers */
         HOST_CAP                = 0x00, /* host capabilities */
@@ -190,6 +191,7 @@ enum {
         AHCI_HFLAG_NO_PMP               = (1 << 6), /* no PMP */
         AHCI_HFLAG_NO_HOTPLUG           = (1 << 7), /* ignore PxSERR.DIAG.N */
         AHCI_HFLAG_SECT255              = (1 << 8), /* max 255 sectors */
+        AHCI_HFLAG_YES_NCQ              = (1 << 9), /* force NCQ cap on */
 
         /* ap->flags bits */
 
@@ -253,6 +255,8 @@ static void ahci_pmp_attach(struct ata_port *ap);
 static void ahci_pmp_detach(struct ata_port *ap);
 static int ahci_softreset(struct ata_link *link, unsigned int *class,
                           unsigned long deadline);
+static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
+                          unsigned long deadline);
 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
                           unsigned long deadline);
 static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
@@ -329,6 +333,12 @@ static struct ata_port_operations ahci_p5wdh_ops = {
         .hardreset              = ahci_p5wdh_hardreset,
 };
 
+static struct ata_port_operations ahci_sb600_ops = {
+        .inherits               = &ahci_ops,
+        .softreset              = ahci_sb600_softreset,
+        .pmp_softreset          = ahci_sb600_softreset,
+};
+
 #define AHCI_HFLAGS(flags)      .private_data   = (void *)(flags)
 
 static const struct ata_port_info ahci_port_info[] = {
@@ -359,11 +369,11 @@ static const struct ata_port_info ahci_port_info[] = {
         {
                 AHCI_HFLAGS     (AHCI_HFLAG_IGN_SERR_INTERNAL |
                                  AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_MSI |
-                                 AHCI_HFLAG_SECT255 | AHCI_HFLAG_NO_PMP),
+                                 AHCI_HFLAG_SECT255),
                 .flags          = AHCI_FLAG_COMMON,
                 .pio_mask       = 0x1f, /* pio0-4 */
                 .udma_mask      = ATA_UDMA6,
-                .port_ops       = &ahci_ops,
+                .port_ops       = &ahci_sb600_ops,
         },
         /* board_ahci_mv */
         {
@@ -377,8 +387,15 @@ static const struct ata_port_info ahci_port_info[] = {
         },
         /* board_ahci_sb700 */
         {
-                AHCI_HFLAGS     (AHCI_HFLAG_IGN_SERR_INTERNAL |
-                                 AHCI_HFLAG_NO_PMP),
+                AHCI_HFLAGS     (AHCI_HFLAG_IGN_SERR_INTERNAL),
+                .flags          = AHCI_FLAG_COMMON,
+                .pio_mask       = 0x1f, /* pio0-4 */
+                .udma_mask      = ATA_UDMA6,
+                .port_ops       = &ahci_sb600_ops,
+        },
+        /* board_ahci_mcp65 */
+        {
+                AHCI_HFLAGS     (AHCI_HFLAG_YES_NCQ),
                 .flags          = AHCI_FLAG_COMMON,
                 .pio_mask       = 0x1f, /* pio0-4 */
                 .udma_mask      = ATA_UDMA6,
@@ -438,14 +455,14 @@ static const struct pci_device_id ahci_pci_tbl[] = {
         { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */
 
         /* NVIDIA */
-        { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci },            /* MCP65 */
-        { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci },            /* MCP65 */
-        { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci },            /* MCP65 */
-        { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci },            /* MCP65 */
-        { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci },            /* MCP65 */
-        { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci },            /* MCP65 */
-        { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci },            /* MCP65 */
-        { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci },            /* MCP65 */
+        { PCI_VDEVICE(NVIDIA, 0x044c), board_ahci_mcp65 },      /* MCP65 */
+        { PCI_VDEVICE(NVIDIA, 0x044d), board_ahci_mcp65 },      /* MCP65 */
+        { PCI_VDEVICE(NVIDIA, 0x044e), board_ahci_mcp65 },      /* MCP65 */
+        { PCI_VDEVICE(NVIDIA, 0x044f), board_ahci_mcp65 },      /* MCP65 */
+        { PCI_VDEVICE(NVIDIA, 0x045c), board_ahci_mcp65 },      /* MCP65 */
+        { PCI_VDEVICE(NVIDIA, 0x045d), board_ahci_mcp65 },      /* MCP65 */
+        { PCI_VDEVICE(NVIDIA, 0x045e), board_ahci_mcp65 },      /* MCP65 */
+        { PCI_VDEVICE(NVIDIA, 0x045f), board_ahci_mcp65 },      /* MCP65 */
         { PCI_VDEVICE(NVIDIA, 0x0550), board_ahci },            /* MCP67 */
         { PCI_VDEVICE(NVIDIA, 0x0551), board_ahci },            /* MCP67 */
         { PCI_VDEVICE(NVIDIA, 0x0552), board_ahci },            /* MCP67 */
@@ -502,10 +519,10 @@ static const struct pci_device_id ahci_pci_tbl[] = {
         { PCI_VDEVICE(NVIDIA, 0x0bcd), board_ahci },            /* MCP7B */
         { PCI_VDEVICE(NVIDIA, 0x0bce), board_ahci },            /* MCP7B */
         { PCI_VDEVICE(NVIDIA, 0x0bcf), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bd0), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bd1), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bd2), board_ahci },            /* MCP7B */
-        { PCI_VDEVICE(NVIDIA, 0x0bd3), board_ahci },            /* MCP7B */
+        { PCI_VDEVICE(NVIDIA, 0x0bc4), board_ahci },            /* MCP7B */
+        { PCI_VDEVICE(NVIDIA, 0x0bc5), board_ahci },            /* MCP7B */
+        { PCI_VDEVICE(NVIDIA, 0x0bc6), board_ahci },            /* MCP7B */
+        { PCI_VDEVICE(NVIDIA, 0x0bc7), board_ahci },            /* MCP7B */
 
         /* SiS */
         { PCI_VDEVICE(SI, 0x1184), board_ahci }, /* SiS 966 */
@@ -624,6 +641,12 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
                 cap &= ~HOST_CAP_NCQ;
         }
 
+        if (!(cap & HOST_CAP_NCQ) && (hpriv->flags & AHCI_HFLAG_YES_NCQ)) {
+                dev_printk(KERN_INFO, &pdev->dev,
+                           "controller can do NCQ, turning on CAP_NCQ\n");
+                cap |= HOST_CAP_NCQ;
+        }
+
         if ((cap & HOST_CAP_PMP) && (hpriv->flags & AHCI_HFLAG_NO_PMP)) {
                 dev_printk(KERN_INFO, &pdev->dev,
                            "controller can't do PMP, turning off CAP_PMP\n");
@@ -1262,19 +1285,11 @@ static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
         return 0;
 }
 
-static int ahci_check_ready(struct ata_link *link)
-{
-        void __iomem *port_mmio = ahci_port_base(link->ap);
-        u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
-
-        return ata_check_ready(status);
-}
-
-static int ahci_softreset(struct ata_link *link, unsigned int *class,
-                          unsigned long deadline)
+static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
+                             int pmp, unsigned long deadline,
+                             int (*check_ready)(struct ata_link *link))
 {
         struct ata_port *ap = link->ap;
-        int pmp = sata_srst_pmp(link);
         const char *reason = NULL;
         unsigned long now, msecs;
         struct ata_taskfile tf;
@@ -1312,7 +1327,7 @@ static int ahci_softreset(struct ata_link *link, unsigned int *class,
         ahci_exec_polled_cmd(ap, pmp, &tf, 0, 0, 0);
 
         /* wait for link to become ready */
-        rc = ata_wait_after_reset(link, deadline, ahci_check_ready);
+        rc = ata_wait_after_reset(link, deadline, check_ready);
         /* link occupied, -ENODEV too is an error */
         if (rc) {
                 reason = "device not ready";
@@ -1328,6 +1343,72 @@ static int ahci_softreset(struct ata_link *link, unsigned int *class,
         return rc;
 }
 
+static int ahci_check_ready(struct ata_link *link)
+{
+        void __iomem *port_mmio = ahci_port_base(link->ap);
+        u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
+
+        return ata_check_ready(status);
+}
+
+static int ahci_softreset(struct ata_link *link, unsigned int *class,
+                          unsigned long deadline)
+{
+        int pmp = sata_srst_pmp(link);
+
+        DPRINTK("ENTER\n");
+
+        return ahci_do_softreset(link, class, pmp, deadline, ahci_check_ready);
+}
+
+static int ahci_sb600_check_ready(struct ata_link *link)
+{
+        void __iomem *port_mmio = ahci_port_base(link->ap);
+        u8 status = readl(port_mmio + PORT_TFDATA) & 0xFF;
+        u32 irq_status = readl(port_mmio + PORT_IRQ_STAT);
+
+        /*
+         * There is no need to check TFDATA if BAD PMP is found due to HW bug,
+         * which can save timeout delay.
+         */
+        if (irq_status & PORT_IRQ_BAD_PMP)
+                return -EIO;
+
+        return ata_check_ready(status);
+}
+
+static int ahci_sb600_softreset(struct ata_link *link, unsigned int *class,
+                                unsigned long deadline)
+{
+        struct ata_port *ap = link->ap;
+        void __iomem *port_mmio = ahci_port_base(ap);
+        int pmp = sata_srst_pmp(link);
+        int rc;
+        u32 irq_sts;
+
+        DPRINTK("ENTER\n");
+
+        rc = ahci_do_softreset(link, class, pmp, deadline,
+                               ahci_sb600_check_ready);
+
+        /*
+         * Soft reset fails on some ATI chips with IPMS set when PMP
+         * is enabled but SATA HDD/ODD is connected to SATA port,
+         * do soft reset again to port 0.
+         */
+        if (rc == -EIO) {
+                irq_sts = readl(port_mmio + PORT_IRQ_STAT);
+                if (irq_sts & PORT_IRQ_BAD_PMP) {
+                        ata_link_printk(link, KERN_WARNING,
+                                        "failed due to HW bug, retry pmp=0\n");
+                        rc = ahci_do_softreset(link, class, 0, deadline,
+                                               ahci_check_ready);
+                }
+        }
+
+        return rc;
+}
+
 static int ahci_hardreset(struct ata_link *link, unsigned int *class,
                           unsigned long deadline)
 {
@@ -2118,7 +2199,8 @@ static void ahci_p5wdh_workaround(struct ata_host *host)
 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
         static int printed_version;
-        struct ata_port_info pi = ahci_port_info[ent->driver_data];
+        unsigned int board_id = ent->driver_data;
+        struct ata_port_info pi = ahci_port_info[board_id];
         const struct ata_port_info *ppi[] = { &pi, NULL };
         struct device *dev = &pdev->dev;
         struct ahci_host_priv *hpriv;
@@ -2167,6 +2249,11 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 return -ENOMEM;
         hpriv->flags |= (unsigned long)pi.private_data;
 
+        /* MCP65 revision A1 and A2 can't do MSI */
+        if (board_id == board_ahci_mcp65 &&
+            (pdev->revision == 0xa1 || pdev->revision == 0xa2))
+                hpriv->flags |= AHCI_HFLAG_NO_MSI;
+
         if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev))
                 pci_intx(pdev, 1);
 
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index a9027b8fbdd5..81b7ae376951 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -247,10 +247,11 @@ static const struct pci_device_id piix_pci_tbl[] = {
         { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
         /* SATA Controller 2 IDE (ICH8) */
         { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
-        /* Mobile SATA Controller IDE (ICH8M) */
-        { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
         /* Mobile SATA Controller IDE (ICH8M), Apple */
         { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata },
+        { 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata },
+        /* Mobile SATA Controller IDE (ICH8M) */
+        { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
         /* SATA Controller IDE (ICH9) */
         { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
         /* SATA Controller IDE (ICH9) */
@@ -526,7 +527,7 @@ static struct ata_port_info piix_port_info[] = {
 
         [ich8m_apple_sata] =
         {
-                .flags          = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
+                .flags          = PIIX_SATA_FLAGS,
                 .pio_mask       = 0x1f, /* pio0-4 */
                 .mwdma_mask     = 0x07, /* mwdma0-2 */
                 .udma_mask      = ATA_UDMA6,
@@ -573,6 +574,8 @@ static const struct ich_laptop ich_laptop[] = {
         { 0x27DF, 0x1043, 0x1267 },     /* ICH7 on Asus W5F */
         { 0x27DF, 0x103C, 0x30A1 },     /* ICH7 on HP Compaq nc2400 */
         { 0x24CA, 0x1025, 0x0061 },     /* ICH4 on ACER Aspire 2023WLMi */
+        { 0x24CA, 0x1025, 0x003d },     /* ICH4 on ACER TM290 */
+        { 0x266F, 0x1025, 0x0066 },     /* ICH6 on ACER Aspire 1694WLMi */
         { 0x2653, 0x1043, 0x82D8 },     /* ICH6M on Asus Eee 701 */
         /* end marker */
         { 0, }
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index dbf6ca781f66..3ff8b14420d9 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -118,12 +118,62 @@ static void ata_acpi_associate_ide_port(struct ata_port *ap)
                 ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
 }
 
-static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device
-                                    *dev, u32 event)
+static void ata_acpi_eject_device(acpi_handle handle)
+{
+        struct acpi_object_list arg_list;
+        union acpi_object arg;
+
+        arg_list.count = 1;
+        arg_list.pointer = &arg;
+        arg.type = ACPI_TYPE_INTEGER;
+        arg.integer.value = 1;
+
+        if (ACPI_FAILURE(acpi_evaluate_object(handle, "_EJ0",
+                                              &arg_list, NULL)))
+                printk(KERN_ERR "Failed to evaluate _EJ0!\n");
+}
+
+/* @ap and @dev are the same as ata_acpi_handle_hotplug() */
+static void ata_acpi_detach_device(struct ata_port *ap, struct ata_device *dev)
+{
+        if (dev)
+                dev->flags |= ATA_DFLAG_DETACH;
+        else {
+                struct ata_link *tlink;
+                struct ata_device *tdev;
+
+                ata_port_for_each_link(tlink, ap)
+                        ata_link_for_each_dev(tdev, tlink)
+                                tdev->flags |= ATA_DFLAG_DETACH;
+        }
+
+        ata_port_schedule_eh(ap);
+}
+
+/**
+ * ata_acpi_handle_hotplug - ACPI event handler backend
+ * @ap: ATA port ACPI event occurred
+ * @dev: ATA device ACPI event occurred (can be NULL)
+ * @event: ACPI event which occurred
+ * @is_dock_event: boolean indicating whether the event was a dock one
+ *
+ * All ACPI bay / device realted events end up in this function.  If
+ * the event is port-wide @dev is NULL.  If the event is specific to a
+ * device, @dev points to it.
+ *
+ * Hotplug (as opposed to unplug) notification is always handled as
+ * port-wide while unplug only kills the target device on device-wide
+ * event.
+ *
+ * LOCKING:
+ * ACPI notify handler context.  May sleep.
+ */
+static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
+                                    u32 event, int is_dock_event)
 {
         char event_string[12];
         char *envp[] = { event_string, NULL };
-        struct ata_eh_info *ehi;
+        struct ata_eh_info *ehi = &ap->link.eh_info;
         struct kobject *kobj = NULL;
         int wait = 0;
         unsigned long flags;
@@ -131,87 +181,100 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device
         unsigned long sta;
         acpi_status status;
 
-        if (!ap)
-                ap = dev->link->ap;
-        ehi = &ap->link.eh_info;
-
-        spin_lock_irqsave(ap->lock, flags);
-
-        if (dev)
+        if (dev) {
+                if (dev->sdev)
+                        kobj = &dev->sdev->sdev_gendev.kobj;
                 handle = dev->acpi_handle;
-        else
+        } else {
+                kobj = &ap->dev->kobj;
                 handle = ap->acpi_handle;
+        }
 
         status = acpi_get_handle(handle, "_EJ0", &tmphandle);
-        if (ACPI_FAILURE(status)) {
-                /* This device is not ejectable */
-                spin_unlock_irqrestore(ap->lock, flags);
+        if (ACPI_FAILURE(status))
+                /* This device does not support hotplug */
                 return;
-        }
 
-        status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-        if (ACPI_FAILURE(status)) {
-                printk ("Unable to determine bay status\n");
-                spin_unlock_irqrestore(ap->lock, flags);
-                return;
-        }
+        spin_lock_irqsave(ap->lock, flags);
 
         switch (event) {
         case ACPI_NOTIFY_BUS_CHECK:
         case ACPI_NOTIFY_DEVICE_CHECK:
                 ata_ehi_push_desc(ehi, "ACPI event");
-                if (!sta) {
-                /* Device has been unplugged */
-                        if (dev)
-                                dev->flags |= ATA_DFLAG_DETACH;
-                        else {
-                                struct ata_link *tlink;
-                                struct ata_device *tdev;
-
-                                ata_port_for_each_link(tlink, ap) {
-                                        ata_link_for_each_dev(tdev, tlink) {
-                                                tdev->flags |=
-                                                        ATA_DFLAG_DETACH;
-                                        }
-                                }
-                        }
-                        ata_port_schedule_eh(ap);
-                        wait = 1;
-                } else {
+
+                status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+                if (ACPI_FAILURE(status)) {
+                        ata_port_printk(ap, KERN_ERR,
+                                "acpi: failed to determine bay status (0x%x)\n",
+                                status);
+                        break;
+                }
+
+                if (sta) {
                         ata_ehi_hotplugged(ehi);
                         ata_port_freeze(ap);
+                } else {
+                        /* The device has gone - unplug it */
+                        ata_acpi_detach_device(ap, dev);
+                        wait = 1;
                 }
+                break;
+        case ACPI_NOTIFY_EJECT_REQUEST:
+                ata_ehi_push_desc(ehi, "ACPI event");
+
+                if (!is_dock_event)
+                        break;
+
+                /* undock event - immediate unplug */
+                ata_acpi_detach_device(ap, dev);
+                wait = 1;
+                break;
         }
 
+        /* make sure kobj doesn't go away while ap->lock is released */
+        kobject_get(kobj);
+
         spin_unlock_irqrestore(ap->lock, flags);
 
-        if (wait)
+        if (wait) {
                 ata_port_wait_eh(ap);
+                ata_acpi_eject_device(handle);
+        }
 
-        if (dev) {
-                if (dev->sdev)
-                        kobj = &dev->sdev->sdev_gendev.kobj;
-        } else
-                kobj = &ap->dev->kobj;
-
-        if (kobj) {
+        if (kobj && !is_dock_event) {
                 sprintf(event_string, "BAY_EVENT=%d", event);
                 kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
         }
+
+        kobject_put(kobj);
+}
+
+static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data)
+{
+        struct ata_device *dev = data;
+
+        ata_acpi_handle_hotplug(dev->link->ap, dev, event, 1);
+}
+
+static void ata_acpi_ap_notify_dock(acpi_handle handle, u32 event, void *data)
+{
+        struct ata_port *ap = data;
+
+        ata_acpi_handle_hotplug(ap, NULL, event, 1);
 }
 
 static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data)
 {
         struct ata_device *dev = data;
 
-        ata_acpi_handle_hotplug(NULL, dev, event);
+        ata_acpi_handle_hotplug(dev->link->ap, dev, event, 0);
 }
 
 static void ata_acpi_ap_notify(acpi_handle handle, u32 event, void *data)
 {
         struct ata_port *ap = data;
 
-        ata_acpi_handle_hotplug(ap, NULL, event);
+        ata_acpi_handle_hotplug(ap, NULL, event, 0);
 }
 
 /**
@@ -252,7 +315,7 @@ void ata_acpi_associate(struct ata_host *host)
                                                     ata_acpi_ap_notify, ap);
                         /* we might be on a docking station */
                         register_hotplug_dock_device(ap->acpi_handle,
-                                                     ata_acpi_ap_notify, ap);
+                                             ata_acpi_ap_notify_dock, ap);
                 }
 
                 for (j = 0; j < ata_link_max_devices(&ap->link); j++) {
@@ -264,7 +327,7 @@ void ata_acpi_associate(struct ata_host *host)
                                                 ata_acpi_dev_notify, dev);
                                 /* we might be on a docking station */
                                 register_hotplug_dock_device(dev->acpi_handle,
-                                                ata_acpi_dev_notify, dev);
+                                             ata_acpi_dev_notify_dock, dev);
                         }
                 }
         }
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 3c89f205c83f..cc816ca623d3 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5403,7 +5403,7 @@ static void ata_host_stop(struct device *gendev, void *res)
  */
 static void ata_finalize_port_ops(struct ata_port_operations *ops)
 {
-        static spinlock_t lock = SPIN_LOCK_UNLOCKED;
+        static DEFINE_SPINLOCK(lock);
         const struct ata_port_operations *cur;
         void **begin = (void **)ops;
         void **end = (void **)&ops->inherits;
diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c
index 0f9386d4a5a0..7daf4c0f6216 100644
--- a/drivers/ata/libata-pmp.c
+++ b/drivers/ata/libata-pmp.c
@@ -322,9 +322,12 @@ static void sata_pmp_quirks(struct ata_port *ap)
         if (vendor == 0x1095 && devid == 0x3726) {
                 /* sil3726 quirks */
                 ata_port_for_each_link(link, ap) {
-                        /* class code report is unreliable */
+                        /* Class code report is unreliable and SRST
+                         * times out under certain configurations.
+                         */
                         if (link->pmp < 5)
-                                link->flags |= ATA_LFLAG_ASSUME_ATA;
+                                link->flags |= ATA_LFLAG_NO_SRST |
+                                               ATA_LFLAG_ASSUME_ATA;
 
                         /* port 5 is for SEMB device and it doesn't like SRST */
                         if (link->pmp == 5)
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index aeb6e01d82ce..2e6e1622dc6d 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1637,6 +1637,7 @@ defer:
 
 /**
  *      ata_scsi_rbuf_get - Map response buffer.
+ *      @cmd: SCSI command containing buffer to be mapped.
  *      @flags: unsigned long variable to store irq enable status
  *      @copy_in: copy in from user buffer
  *
@@ -1954,7 +1955,7 @@ static unsigned int ata_msense_ctl_mode(u8 *buf)
 
 /**
  *      ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page
- *      @bufp: output buffer
+ *      @buf: output buffer
  *
  *      Generate a generic MODE SENSE r/w error recovery page.
  *
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 3c2d2289f85e..215d18672a5a 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -247,7 +247,7 @@ u8 ata_sff_check_status(struct ata_port *ap)
  *      LOCKING:
  *      Inherited from caller.
  */
-u8 ata_sff_altstatus(struct ata_port *ap)
+static u8 ata_sff_altstatus(struct ata_port *ap)
 {
         if (ap->ops->sff_check_altstatus)
                 return ap->ops->sff_check_altstatus(ap);
@@ -256,6 +256,93 @@ u8 ata_sff_altstatus(struct ata_port *ap)
 }
 
 /**
+ *      ata_sff_irq_status - Check if the device is busy
+ *      @ap: port where the device is
+ *
+ *      Determine if the port is currently busy. Uses altstatus
+ *      if available in order to avoid clearing shared IRQ status
+ *      when finding an IRQ source. Non ctl capable devices don't
+ *      share interrupt lines fortunately for us.
+ *
+ *      LOCKING:
+ *      Inherited from caller.
+ */
+static u8 ata_sff_irq_status(struct ata_port *ap)
+{
+        u8 status;
+
+        if (ap->ops->sff_check_altstatus || ap->ioaddr.altstatus_addr) {
+                status = ata_sff_altstatus(ap);
+                /* Not us: We are busy */
+                if (status & ATA_BUSY)
+                        return status;
+        }
+        /* Clear INTRQ latch */
+        status = ap->ops->sff_check_status(ap);
+        return status;
+}
+
+/**
+ *      ata_sff_sync - Flush writes
+ *      @ap: Port to wait for.
+ *
+ *      CAUTION:
+ *      If we have an mmio device with no ctl and no altstatus
+ *      method this will fail. No such devices are known to exist.
+ *
+ *      LOCKING:
+ *      Inherited from caller.
+ */
+
+static void ata_sff_sync(struct ata_port *ap)
+{
+        if (ap->ops->sff_check_altstatus)
+                ap->ops->sff_check_altstatus(ap);
+        else if (ap->ioaddr.altstatus_addr)
+                ioread8(ap->ioaddr.altstatus_addr);
+}
+
+/**
+ *      ata_sff_pause           -       Flush writes and wait 400nS
+ *      @ap: Port to pause for.
+ *
+ *      CAUTION:
+ *      If we have an mmio device with no ctl and no altstatus
+ *      method this will fail. No such devices are known to exist.
+ *
+ *      LOCKING:
+ *      Inherited from caller.
+ */
+
+void ata_sff_pause(struct ata_port *ap)
+{
+        ata_sff_sync(ap);
+        ndelay(400);
+}
+
+/**
+ *      ata_sff_dma_pause       -       Pause before commencing DMA
+ *      @ap: Port to pause for.
+ *
+ *      Perform I/O fencing and ensure sufficient cycle delays occur
+ *      for the HDMA1:0 transition
+ */
+ 
+void ata_sff_dma_pause(struct ata_port *ap)
+{
+        if (ap->ops->sff_check_altstatus || ap->ioaddr.altstatus_addr) {
+                /* An altstatus read will cause the needed delay without
+                   messing up the IRQ status */
+                ata_sff_altstatus(ap);
+                return;
+        }
+        /* There are no DMA controllers without ctl. BUG here to ensure
+           we never violate the HDMA1:0 transition timing and risk
+           corruption. */
+        BUG();
+}
+
+/**
  *      ata_sff_busy_sleep - sleep until BSY clears, or timeout
  *      @ap: port containing status register to be polled
  *      @tmout_pat: impatience timeout
@@ -742,7 +829,7 @@ static void ata_pio_sectors(struct ata_queued_cmd *qc)
         } else
                 ata_pio_sector(qc);
 
-        ata_sff_altstatus(qc->ap); /* flush */
+        ata_sff_sync(qc->ap); /* flush */
 }
 
 /**
@@ -763,8 +850,9 @@ static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)
         WARN_ON(qc->dev->cdb_len < 12);
 
         ap->ops->sff_data_xfer(qc->dev, qc->cdb, qc->dev->cdb_len, 1);
-        ata_sff_altstatus(ap); /* flush */
-
+        ata_sff_sync(ap);
+        /* FIXME: If the CDB is for DMA do we need to do the transition delay
+           or is bmdma_start guaranteed to do it ? */
         switch (qc->tf.protocol) {
         case ATAPI_PROT_PIO:
                 ap->hsm_task_state = HSM_ST;
@@ -905,7 +993,7 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc)
 
         if (unlikely(__atapi_pio_bytes(qc, bytes)))
                 goto err_out;
-        ata_sff_altstatus(ap); /* flush */
+        ata_sff_sync(ap); /* flush */
 
         return;
 
@@ -1489,14 +1577,10 @@ inline unsigned int ata_sff_host_intr(struct ata_port *ap,
                 goto idle_irq;
         }
 
-        /* check altstatus */
-        status = ata_sff_altstatus(ap);
-        if (status & ATA_BUSY)
-                goto idle_irq;
 
-        /* check main status, clearing INTRQ */
-        status = ap->ops->sff_check_status(ap);
-        if (unlikely(status & ATA_BUSY))
+        /* check main status, clearing INTRQ if needed */
+        status = ata_sff_irq_status(ap);
+        if (status & ATA_BUSY)
                 goto idle_irq;
 
         /* ack bmdma irq events */
@@ -2030,7 +2114,7 @@ void ata_sff_error_handler(struct ata_port *ap)
                 ap->ops->bmdma_stop(qc);
         }
 
-        ata_sff_altstatus(ap);
+        ata_sff_sync(ap);               /* FIXME: We don't need this */
         ap->ops->sff_check_status(ap);
         ap->ops->sff_irq_clear(ap);
 
@@ -2203,7 +2287,7 @@ void ata_bmdma_stop(struct ata_queued_cmd *qc)
                  mmio + ATA_DMA_CMD);
 
         /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
-        ata_sff_altstatus(ap);        /* dummy read */
+        ata_sff_dma_pause(ap);
 }
 
 /**
@@ -2722,7 +2806,8 @@ EXPORT_SYMBOL_GPL(ata_sff_qc_prep);
 EXPORT_SYMBOL_GPL(ata_sff_dumb_qc_prep);
 EXPORT_SYMBOL_GPL(ata_sff_dev_select);
 EXPORT_SYMBOL_GPL(ata_sff_check_status);
-EXPORT_SYMBOL_GPL(ata_sff_altstatus);
+EXPORT_SYMBOL_GPL(ata_sff_dma_pause);
+EXPORT_SYMBOL_GPL(ata_sff_pause);
 EXPORT_SYMBOL_GPL(ata_sff_busy_sleep);
 EXPORT_SYMBOL_GPL(ata_sff_wait_ready);
 EXPORT_SYMBOL_GPL(ata_sff_tf_load);
diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c
index 17138436423d..cf9e9848f8b5 100644
--- a/drivers/ata/pata_icside.c
+++ b/drivers/ata/pata_icside.c
@@ -270,7 +270,7 @@ static void pata_icside_bmdma_stop(struct ata_queued_cmd *qc)
         disable_dma(state->dma);
 
         /* see ata_bmdma_stop */
-        ata_sff_altstatus(ap);
+        ata_sff_dma_pause(ap);
 }
 
 static u8 pata_icside_bmdma_status(struct ata_port *ap)
diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index a108d259f19d..f8b3ffc8ae9e 100644
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -57,7 +57,9 @@ static inline void rb532_pata_finish_io(struct ata_port *ap)
         struct ata_host *ah = ap->host;
         struct rb532_cf_info *info = ah->private_data;
 
-        ata_sff_altstatus(ap);
+        /* FIXME: Keep previous delay. If this is merely a fence then
+           ata_sff_sync might be sufficient. */
+        ata_sff_dma_pause(ap);
         ndelay(RB500_CF_IO_DELAY);
 
         set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH);
diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c
index e965b251ca24..bbf5aa345e68 100644
--- a/drivers/ata/pata_scc.c
+++ b/drivers/ata/pata_scc.c
@@ -726,7 +726,7 @@ static void scc_bmdma_stop (struct ata_queued_cmd *qc)
                  in_be32(bmid_base + SCC_DMA_CMD) & ~ATA_DMA_START);
 
         /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
-        ata_sff_altstatus(ap);  /* dummy read */
+        ata_sff_dma_pause(ap);  /* dummy read */
 }
 
 /**
@@ -747,7 +747,8 @@ static u8 scc_bmdma_status (struct ata_port *ap)
                 return host_stat;
 
         /* errata A252,A308 workaround: Step4 */
-        if ((ata_sff_altstatus(ap) & ATA_ERR) && (int_status & INTSTS_INTRQ))
+        if ((scc_check_altstatus(ap) & ATA_ERR)
+                                        && (int_status & INTSTS_INTRQ))
                 return (host_stat | ATA_DMA_INTR);
 
         /* errata A308 workaround Step5 */
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 853559e32315..3924e7209a44 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -34,7 +34,7 @@ enum {
 
         SATA_FSL_HOST_FLAGS     = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
                                 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA |
-                                ATA_FLAG_NCQ),
+                                ATA_FLAG_PMP | ATA_FLAG_NCQ),
 
         SATA_FSL_MAX_CMDS       = SATA_FSL_QUEUE_DEPTH,
         SATA_FSL_CMD_HDR_SIZE   = 16,   /* 4 DWORDS */
@@ -395,7 +395,7 @@ static void sata_fsl_qc_prep(struct ata_queued_cmd *qc)
         cd = (struct command_desc *)pp->cmdentry + tag;
         cd_paddr = pp->cmdentry_paddr + tag * SATA_FSL_CMD_DESC_SIZE;
 
-        ata_tf_to_fis(&qc->tf, 0, 1, (u8 *) &cd->cfis);
+        ata_tf_to_fis(&qc->tf, qc->dev->link->pmp, 1, (u8 *) &cd->cfis);
 
         VPRINTK("Dumping cfis : 0x%x, 0x%x, 0x%x\n",
                 cd->cfis[0], cd->cfis[1], cd->cfis[2]);
@@ -438,6 +438,8 @@ static unsigned int sata_fsl_qc_issue(struct ata_queued_cmd *qc)
                 ioread32(CA + hcr_base),
                 ioread32(CE + hcr_base), ioread32(CC + hcr_base));
 
+        iowrite32(qc->dev->link->pmp, CQPMP + hcr_base);
+
         /* Simply queue command to the controller/device */
         iowrite32(1 << tag, CQ + hcr_base);
 
@@ -558,11 +560,36 @@ static void sata_fsl_thaw(struct ata_port *ap)
                 ioread32(hcr_base + HCONTROL), ioread32(hcr_base + HSTATUS));
 }
 
+static void sata_fsl_pmp_attach(struct ata_port *ap)
+{
+        struct sata_fsl_host_priv *host_priv = ap->host->private_data;
+        void __iomem *hcr_base = host_priv->hcr_base;
+        u32 temp;
+
+        temp = ioread32(hcr_base + HCONTROL);
+        iowrite32((temp | HCONTROL_PMP_ATTACHED), hcr_base + HCONTROL);
+}
+
+static void sata_fsl_pmp_detach(struct ata_port *ap)
+{
+        struct sata_fsl_host_priv *host_priv = ap->host->private_data;
+        void __iomem *hcr_base = host_priv->hcr_base;
+        u32 temp;
+
+        temp = ioread32(hcr_base + HCONTROL);
+        temp &= ~HCONTROL_PMP_ATTACHED;
+        iowrite32(temp, hcr_base + HCONTROL);
+
+        /* enable interrupts on the controller/port */
+        temp = ioread32(hcr_base + HCONTROL);
+        iowrite32((temp | DEFAULT_PORT_IRQ_ENABLE_MASK), hcr_base + HCONTROL);
+
+}
+
 static int sata_fsl_port_start(struct ata_port *ap)
 {
         struct device *dev = ap->host->dev;
         struct sata_fsl_port_priv *pp;
-        int retval;
         void *mem;
         dma_addr_t mem_dma;
         struct sata_fsl_host_priv *host_priv = ap->host->private_data;
@@ -688,12 +715,13 @@ static int sata_fsl_prereset(struct ata_link *link, unsigned long deadline)
 }
 
 static int sata_fsl_softreset(struct ata_link *link, unsigned int *class,
-                              unsigned long deadline)
+                                        unsigned long deadline)
 {
         struct ata_port *ap = link->ap;
         struct sata_fsl_port_priv *pp = ap->private_data;
         struct sata_fsl_host_priv *host_priv = ap->host->private_data;
         void __iomem *hcr_base = host_priv->hcr_base;
+        int pmp = sata_srst_pmp(link);
         u32 temp;
         struct ata_taskfile tf;
         u8 *cfis;
@@ -703,6 +731,9 @@ static int sata_fsl_softreset(struct ata_link *link, unsigned int *class,
 
         DPRINTK("in xx_softreset\n");
 
+        if (pmp != SATA_PMP_CTRL_PORT)
+                goto issue_srst;
+
 try_offline_again:
         /*
          * Force host controller to go off-line, aborting current operations
@@ -746,6 +777,7 @@ try_offline_again:
 
         temp = ioread32(hcr_base + HCONTROL);
         temp |= (HCONTROL_ONLINE_PHY_RST | HCONTROL_SNOOP_ENABLE);
+        temp |= HCONTROL_PMP_ATTACHED;
         iowrite32(temp, hcr_base + HCONTROL);
 
         temp = ata_wait_register(hcr_base + HSTATUS, ONLINE, 0, 1, 500);
@@ -771,7 +803,8 @@ try_offline_again:
                 ata_port_printk(ap, KERN_WARNING,
                                 "No Device OR PHYRDY change,Hstatus = 0x%x\n",
                                 ioread32(hcr_base + HSTATUS));
-                goto err;
+                *class = ATA_DEV_NONE;
+                goto out;
         }
 
         /*
@@ -783,7 +816,8 @@ try_offline_again:
 
         if ((temp & 0xFF) != 0x18) {
                 ata_port_printk(ap, KERN_WARNING, "No Signature Update\n");
-                goto err;
+                *class = ATA_DEV_NONE;
+                goto out;
         } else {
                 ata_port_printk(ap, KERN_INFO,
                                 "Signature Update detected @ %d msecs\n",
@@ -798,6 +832,7 @@ try_offline_again:
          * reached here, we can send a command to the target device
          */
 
+issue_srst:
         DPRINTK("Sending SRST/device reset\n");
 
         ata_tf_init(link->device, &tf);
@@ -808,7 +843,7 @@ try_offline_again:
                                      SRST_CMD | CMD_DESC_SNOOP_ENABLE, 0, 0, 5);
 
         tf.ctl |= ATA_SRST;     /* setup SRST bit in taskfile control reg */
-        ata_tf_to_fis(&tf, 0, 0, cfis);
+        ata_tf_to_fis(&tf, pmp, 0, cfis);
 
         DPRINTK("Dumping cfis : 0x%x, 0x%x, 0x%x, 0x%x\n",
                 cfis[0], cfis[1], cfis[2], cfis[3]);
@@ -854,8 +889,10 @@ try_offline_again:
         sata_fsl_setup_cmd_hdr_entry(pp, 0, CMD_DESC_SNOOP_ENABLE, 0, 0, 5);
 
         tf.ctl &= ~ATA_SRST;    /* 2nd H2D Ctl. register FIS */
-        ata_tf_to_fis(&tf, 0, 0, cfis);
+        ata_tf_to_fis(&tf, pmp, 0, cfis);
 
+        if (pmp != SATA_PMP_CTRL_PORT)
+                iowrite32(pmp, CQPMP + hcr_base);
         iowrite32(1, CQ + hcr_base);
         msleep(150);            /* ?? */
 
@@ -886,12 +923,21 @@ try_offline_again:
                 VPRINTK("cereg = 0x%x\n", ioread32(hcr_base + CE));
         }
 
+out:
         return 0;
 
 err:
         return -EIO;
 }
 
+static void sata_fsl_error_handler(struct ata_port *ap)
+{
+
+        DPRINTK("in xx_error_handler\n");
+        sata_pmp_error_handler(ap);
+
+}
+
 static void sata_fsl_post_internal_cmd(struct ata_queued_cmd *qc)
 {
         if (qc->flags & ATA_QCFLAG_FAILED)
@@ -905,18 +951,21 @@ static void sata_fsl_post_internal_cmd(struct ata_queued_cmd *qc)
 
 static void sata_fsl_error_intr(struct ata_port *ap)
 {
-        struct ata_link *link = &ap->link;
-        struct ata_eh_info *ehi = &link->eh_info;
         struct sata_fsl_host_priv *host_priv = ap->host->private_data;
         void __iomem *hcr_base = host_priv->hcr_base;
-        u32 hstatus, dereg, cereg = 0, SError = 0;
+        u32 hstatus, dereg=0, cereg = 0, SError = 0;
         unsigned int err_mask = 0, action = 0;
-        struct ata_queued_cmd *qc;
-        int freeze = 0;
+        int freeze = 0, abort=0;
+        struct ata_link *link = NULL;
+        struct ata_queued_cmd *qc = NULL;
+        struct ata_eh_info *ehi;
 
         hstatus = ioread32(hcr_base + HSTATUS);
         cereg = ioread32(hcr_base + CE);
 
+        /* first, analyze and record host port events */
+        link = &ap->link;
+        ehi = &link->eh_info;
         ata_ehi_clear_desc(ehi);
 
         /*
@@ -926,42 +975,28 @@ static void sata_fsl_error_intr(struct ata_port *ap)
         sata_fsl_scr_read(ap, SCR_ERROR, &SError);
         if (unlikely(SError & 0xFFFF0000)) {
                 sata_fsl_scr_write(ap, SCR_ERROR, SError);
-                err_mask |= AC_ERR_ATA_BUS;
         }
 
         DPRINTK("error_intr,hStat=0x%x,CE=0x%x,DE =0x%x,SErr=0x%x\n",
                 hstatus, cereg, ioread32(hcr_base + DE), SError);
 
-        /* handle single device errors */
-        if (cereg) {
-                /*
-                 * clear the command error, also clears queue to the device
-                 * in error, and we can (re)issue commands to this device.
-                 * When a device is in error all commands queued into the
-                 * host controller and at the device are considered aborted
-                 * and the queue for that device is stopped. Now, after
-                 * clearing the device error, we can issue commands to the
-                 * device to interrogate it to find the source of the error.
-                 */
-                dereg = ioread32(hcr_base + DE);
-                iowrite32(dereg, hcr_base + DE);
-                iowrite32(cereg, hcr_base + CE);
+        /* handle fatal errors */
+        if (hstatus & FATAL_ERROR_DECODE) {
+                ehi->err_mask |= AC_ERR_ATA_BUS;
+                ehi->action |= ATA_EH_SOFTRESET;
 
-                DPRINTK("single device error, CE=0x%x, DE=0x%x\n",
-                        ioread32(hcr_base + CE), ioread32(hcr_base + DE));
                 /*
-                 * We should consider this as non fatal error, and TF must
-                 * be updated as done below.
+                 * Ignore serror in case of fatal errors as we always want
+                 * to do a soft-reset of the FSL SATA controller. Analyzing
+                 * serror may cause libata to schedule a hard-reset action,
+                 * and hard-reset currently does not do controller
+                 * offline/online, causing command timeouts and leads to an
+                 * un-recoverable state, hence make libATA ignore
+                 * autopsy in case of fatal errors.
                  */
 
-                err_mask |= AC_ERR_DEV;
-        }
+                ehi->flags |= ATA_EHI_NO_AUTOPSY;
 
-        /* handle fatal errors */
-        if (hstatus & FATAL_ERROR_DECODE) {
-                err_mask |= AC_ERR_ATA_BUS;
-                action |= ATA_EH_RESET;
-                /* how will fatal error interrupts be completed ?? */
                 freeze = 1;
         }
 
@@ -971,30 +1006,83 @@ static void sata_fsl_error_intr(struct ata_port *ap)
 
                 /* Setup a soft-reset EH action */
                 ata_ehi_hotplugged(ehi);
+                ata_ehi_push_desc(ehi, "%s", "PHY RDY changed");
                 freeze = 1;
         }
 
-        /* record error info */
-        qc = ata_qc_from_tag(ap, link->active_tag);
+        /* handle single device errors */
+        if (cereg) {
+                /*
+                 * clear the command error, also clears queue to the device
+                 * in error, and we can (re)issue commands to this device.
+                 * When a device is in error all commands queued into the
+                 * host controller and at the device are considered aborted
+                 * and the queue for that device is stopped. Now, after
+                 * clearing the device error, we can issue commands to the
+                 * device to interrogate it to find the source of the error.
+                 */
+                abort = 1;
+
+                DPRINTK("single device error, CE=0x%x, DE=0x%x\n",
+                        ioread32(hcr_base + CE), ioread32(hcr_base + DE));
 
-        if (qc)
+                /* find out the offending link and qc */
+                if (ap->nr_pmp_links) {
+                        dereg = ioread32(hcr_base + DE);
+                        iowrite32(dereg, hcr_base + DE);
+                        iowrite32(cereg, hcr_base + CE);
+
+                        if (dereg < ap->nr_pmp_links) {
+                                link = &ap->pmp_link[dereg];
+                                ehi = &link->eh_info;
+                                qc = ata_qc_from_tag(ap, link->active_tag);
+                                /*
+                                 * We should consider this as non fatal error,
+                                 * and TF must be updated as done below.
+                                 */
+
+                                err_mask |= AC_ERR_DEV;
+
+                        } else {
+                                err_mask |= AC_ERR_HSM;
+                                action |= ATA_EH_HARDRESET;
+                                freeze = 1;
+                        }
+                } else {
+                        dereg = ioread32(hcr_base + DE);
+                        iowrite32(dereg, hcr_base + DE);
+                        iowrite32(cereg, hcr_base + CE);
+
+                        qc = ata_qc_from_tag(ap, link->active_tag);
+                        /*
+                         * We should consider this as non fatal error,
+                         * and TF must be updated as done below.
+                        */
+                        err_mask |= AC_ERR_DEV;
+                }
+        }
+
+        /* record error info */
+        if (qc) {
                 qc->err_mask |= err_mask;
-        else
+        } else
                 ehi->err_mask |= err_mask;
 
         ehi->action |= action;
-        ehi->serror |= SError;
 
         /* freeze or abort */
         if (freeze)
                 ata_port_freeze(ap);
-        else
-                ata_port_abort(ap);
+        else if (abort) {
+                if (qc)
+                        ata_link_abort(qc->dev->link);
+                else
+                        ata_port_abort(ap);
+        }
 }
 
 static void sata_fsl_host_intr(struct ata_port *ap)
 {
-        struct ata_link *link = &ap->link;
         struct sata_fsl_host_priv *host_priv = ap->host->private_data;
         void __iomem *hcr_base = host_priv->hcr_base;
         u32 hstatus, qc_active = 0;
@@ -1017,10 +1105,19 @@ static void sata_fsl_host_intr(struct ata_port *ap)
                 return;
         }
 
-        if (link->sactive) {    /* only true for NCQ commands */
+        /* Read command completed register */
+        qc_active = ioread32(hcr_base + CC);
+
+        VPRINTK("Status of all queues :\n");
+        VPRINTK("qc_active/CC = 0x%x, CA = 0x%x, CE=0x%x,CQ=0x%x,apqa=0x%x\n",
+                qc_active,
+                ioread32(hcr_base + CA),
+                ioread32(hcr_base + CE),
+                ioread32(hcr_base + CQ),
+                ap->qc_active);
+
+        if (qc_active & ap->qc_active) {
                 int i;
-                /* Read command completed register */
-                qc_active = ioread32(hcr_base + CC);
                 /* clear CC bit, this will also complete the interrupt */
                 iowrite32(qc_active, hcr_base + CC);
 
@@ -1032,8 +1129,9 @@ static void sata_fsl_host_intr(struct ata_port *ap)
                 for (i = 0; i < SATA_FSL_QUEUE_DEPTH; i++) {
                         if (qc_active & (1 << i)) {
                                 qc = ata_qc_from_tag(ap, i);
-                                if (qc)
+                                if (qc) {
                                         ata_qc_complete(qc);
+                                }
                                 DPRINTK
                                     ("completing ncq cmd,tag=%d,CC=0x%x,CA=0x%x\n",
                                      i, ioread32(hcr_base + CC),
@@ -1042,19 +1140,21 @@ static void sata_fsl_host_intr(struct ata_port *ap)
                 }
                 return;
 
-        } else if (ap->qc_active) {
+        } else if ((ap->qc_active & (1 << ATA_TAG_INTERNAL))) {
                 iowrite32(1, hcr_base + CC);
-                qc = ata_qc_from_tag(ap, link->active_tag);
+                qc = ata_qc_from_tag(ap, ATA_TAG_INTERNAL);
 
-                DPRINTK("completing non-ncq cmd, tag=%d,CC=0x%x\n",
-                        link->active_tag, ioread32(hcr_base + CC));
+                DPRINTK("completing non-ncq cmd, CC=0x%x\n",
+                         ioread32(hcr_base + CC));
 
-                if (qc)
+                if (qc) {
                         ata_qc_complete(qc);
+                }
         } else {
                 /* Spurious Interrupt!! */
                 DPRINTK("spurious interrupt!!, CC = 0x%x\n",
                         ioread32(hcr_base + CC));
+                iowrite32(qc_active, hcr_base + CC);
                 return;
         }
 }
@@ -1130,9 +1230,6 @@ static int sata_fsl_init_controller(struct ata_host *host)
         iowrite32(0x00000FFFF, hcr_base + CE);
         iowrite32(0x00000FFFF, hcr_base + DE);
 
-        /* initially assuming no Port multiplier, set CQPMP to 0 */
-        iowrite32(0x0, hcr_base + CQPMP);
-
         /*
          * host controller will be brought on-line, during xx_port_start()
          * callback, that should also initiate the OOB, COMINIT sequence
@@ -1154,8 +1251,8 @@ static struct scsi_host_template sata_fsl_sht = {
         .dma_boundary = ATA_DMA_BOUNDARY,
 };
 
-static const struct ata_port_operations sata_fsl_ops = {
-        .inherits = &sata_port_ops,
+static struct ata_port_operations sata_fsl_ops = {
+        .inherits               = &sata_pmp_port_ops,
 
         .qc_prep = sata_fsl_qc_prep,
         .qc_issue = sata_fsl_qc_issue,
@@ -1168,10 +1265,15 @@ static const struct ata_port_operations sata_fsl_ops = {
         .thaw = sata_fsl_thaw,
         .prereset = sata_fsl_prereset,
         .softreset = sata_fsl_softreset,
+        .pmp_softreset = sata_fsl_softreset,
+        .error_handler = sata_fsl_error_handler,
         .post_internal_cmd = sata_fsl_post_internal_cmd,
 
         .port_start = sata_fsl_port_start,
         .port_stop = sata_fsl_port_stop,
+
+        .pmp_attach = sata_fsl_pmp_attach,
+        .pmp_detach = sata_fsl_pmp_detach,
 };
 
 static const struct ata_port_info sata_fsl_port_info[] = {
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index fb81f0c7a8c2..60391e9a84db 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -72,7 +72,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME        "sata_mv"
-#define DRV_VERSION     "1.21"
+#define DRV_VERSION     "1.24"
 
 enum {
         /* BAR's are enumerated in terms of pci_resource_start() terms */
@@ -122,8 +122,6 @@ enum {
         /* Host Flags */
         MV_FLAG_DUAL_HC         = (1 << 30),  /* two SATA Host Controllers */
         MV_FLAG_IRQ_COALESCE    = (1 << 29),  /* IRQ coalescing capability */
-        /* SoC integrated controllers, no PCI interface */
-        MV_FLAG_SOC             = (1 << 28),
 
         MV_COMMON_FLAGS         = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
                                   ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI |
@@ -226,6 +224,11 @@ enum {
 
         PHY_MODE3               = 0x310,
         PHY_MODE4               = 0x314,
+        PHY_MODE4_CFG_MASK      = 0x00000003,   /* phy internal config field */
+        PHY_MODE4_CFG_VALUE     = 0x00000001,   /* phy internal config field */
+        PHY_MODE4_RSVD_ZEROS    = 0x5de3fffa,   /* Gen2e always write zeros */
+        PHY_MODE4_RSVD_ONES     = 0x00000005,   /* Gen2e always write ones */
+
         PHY_MODE2               = 0x330,
         SATA_IFCTL_OFS          = 0x344,
         SATA_TESTCTL_OFS        = 0x348,
@@ -356,12 +359,12 @@ enum {
         MV_HP_ERRATA_50XXB2     = (1 << 2),
         MV_HP_ERRATA_60X1B2     = (1 << 3),
         MV_HP_ERRATA_60X1C0     = (1 << 4),
-        MV_HP_ERRATA_XX42A0     = (1 << 5),
         MV_HP_GEN_I             = (1 << 6),     /* Generation I: 50xx */
         MV_HP_GEN_II            = (1 << 7),     /* Generation II: 60xx */
         MV_HP_GEN_IIE           = (1 << 8),     /* Generation IIE: 6042/7042 */
         MV_HP_PCIE              = (1 << 9),     /* PCIe bus/regs: 7042 */
         MV_HP_CUT_THROUGH       = (1 << 10),    /* can use EDMA cut-through */
+        MV_HP_FLAG_SOC          = (1 << 11),    /* SystemOnChip, no PCI */
 
         /* Port private flags (pp_flags) */
         MV_PP_FLAG_EDMA_EN      = (1 << 0),     /* is EDMA engine enabled? */
@@ -374,7 +377,7 @@ enum {
 #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II)
 #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
 #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE)
-#define HAS_PCI(host) (!((host)->ports[0]->flags & MV_FLAG_SOC))
+#define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC)
 
 #define WINDOW_CTRL(i)          (0x20030 + ((i) << 4))
 #define WINDOW_BASE(i)          (0x20034 + ((i) << 4))
@@ -652,7 +655,7 @@ static const struct ata_port_info mv_port_info[] = {
                 .port_ops       = &mv_iie_ops,
         },
         {  /* chip_soc */
-                .flags          = MV_GENIIE_FLAGS | MV_FLAG_SOC,
+                .flags          = MV_GENIIE_FLAGS,
                 .pio_mask       = 0x1f, /* pio0-4 */
                 .udma_mask      = ATA_UDMA6,
                 .port_ops       = &mv_iie_ops,
@@ -812,12 +815,7 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
         writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
         writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index,
                  port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
-
-        if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
-                writelfl((pp->crqb_dma & 0xffffffff) | index,
-                         port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
-        else
-                writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
+        writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
 
         /*
          * initialize response queue
@@ -827,13 +825,7 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
 
         WARN_ON(pp->crpb_dma & 0xff);
         writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
-
-        if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
-                writelfl((pp->crpb_dma & 0xffffffff) | index,
-                         port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
-        else
-                writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
-
+        writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
         writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index,
                  port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
 }
@@ -1254,7 +1246,7 @@ static void mv_edma_cfg(struct ata_port *ap, int want_ncq)
 
                 cfg |= (1 << 23);       /* do not mask PM field in rx'd FIS */
                 cfg |= (1 << 22);       /* enab 4-entry host queue cache */
-                if (HAS_PCI(ap->host))
+                if (!IS_SOC(hpriv))
                         cfg |= (1 << 18);       /* enab early completion */
                 if (hpriv->hp_flags & MV_HP_CUT_THROUGH)
                         cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */
@@ -2225,7 +2217,7 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance)
          * a bogus register value which can indicate HW removal or PCI fault.
          */
         if (pending_irqs && main_irq_cause != 0xffffffffU) {
-                if (unlikely((pending_irqs & PCI_ERR) && HAS_PCI(host)))
+                if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv)))
                         handled = mv_pci_error(host, hpriv->base);
                 else
                         handled = mv_host_intr(host, pending_irqs);
@@ -2547,7 +2539,7 @@ static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
                 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
         int fix_phy_mode4 =
                 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
-        u32 m2, tmp;
+        u32 m2, m3;
 
         if (fix_phy_mode2) {
                 m2 = readl(port_mmio + PHY_MODE2);
@@ -2564,28 +2556,36 @@ static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
                 udelay(200);
         }
 
-        /* who knows what this magic does */
-        tmp = readl(port_mmio + PHY_MODE3);
-        tmp &= ~0x7F800000;
-        tmp |= 0x2A800000;
-        writel(tmp, port_mmio + PHY_MODE3);
-
-        if (fix_phy_mode4) {
-                u32 m4;
-
-                m4 = readl(port_mmio + PHY_MODE4);
-
-                if (hp_flags & MV_HP_ERRATA_60X1B2)
-                        tmp = readl(port_mmio + PHY_MODE3);
+        /*
+         * Gen-II/IIe PHY_MODE3 errata RM#2:
+         * Achieves better receiver noise performance than the h/w default:
+         */
+        m3 = readl(port_mmio + PHY_MODE3);
+        m3 = (m3 & 0x1f) | (0x5555601 << 5);
 
-                /* workaround for errata FEr SATA#10 (part 1) */
-                m4 = (m4 & ~(1 << 1)) | (1 << 0);
+        /* Guideline 88F5182 (GL# SATA-S11) */
+        if (IS_SOC(hpriv))
+                m3 &= ~0x1c;
 
+        if (fix_phy_mode4) {
+                u32 m4 = readl(port_mmio + PHY_MODE4);
+                /*
+                 * Enforce reserved-bit restrictions on GenIIe devices only.
+                 * For earlier chipsets, force only the internal config field
+                 *  (workaround for errata FEr SATA#10 part 1).
+                 */
+                if (IS_GEN_IIE(hpriv))
+                        m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES;
+                else
+                        m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE;
                 writel(m4, port_mmio + PHY_MODE4);
-
-                if (hp_flags & MV_HP_ERRATA_60X1B2)
-                        writel(tmp, port_mmio + PHY_MODE3);
         }
+        /*
+         * Workaround for 60x1-B2 errata SATA#13:
+         * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3,
+         * so we must always rewrite PHY_MODE3 after PHY_MODE4.
+         */
+        writel(m3, port_mmio + PHY_MODE3);
 
         /* Revert values of pre-emphasis and signal amps to the saved ones */
         m2 = readl(port_mmio + PHY_MODE2);
@@ -2876,7 +2876,7 @@ static unsigned int mv_in_pcix_mode(struct ata_host *host)
         void __iomem *mmio = hpriv->base;
         u32 reg;
 
-        if (!HAS_PCI(host) || !IS_PCIE(hpriv))
+        if (IS_SOC(hpriv) || !IS_PCIE(hpriv))
                 return 0;       /* not PCI-X capable */
         reg = readl(mmio + MV_PCI_MODE_OFS);
         if ((reg & MV_PCI_MODE_MASK) == 0)
@@ -3003,10 +3003,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
                         hp_flags |= MV_HP_CUT_THROUGH;
 
                 switch (pdev->revision) {
-                case 0x0:
-                        hp_flags |= MV_HP_ERRATA_XX42A0;
-                        break;
-                case 0x1:
+                case 0x2: /* Rev.B0: the first/only public release */
                         hp_flags |= MV_HP_ERRATA_60X1C0;
                         break;
                 default:
@@ -3018,7 +3015,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
                 break;
         case chip_soc:
                 hpriv->ops = &mv_soc_ops;
-                hp_flags |= MV_HP_ERRATA_60X1C0;
+                hp_flags |= MV_HP_FLAG_SOC | MV_HP_ERRATA_60X1C0;
                 break;
 
         default:
@@ -3062,12 +3059,12 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)
         if (rc)
                 goto done;
 
-        if (HAS_PCI(host)) {
-                hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE_OFS;
-                hpriv->main_irq_mask_addr  = mmio + PCI_HC_MAIN_IRQ_MASK_OFS;
-        } else {
+        if (IS_SOC(hpriv)) {
                 hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE_OFS;
                 hpriv->main_irq_mask_addr  = mmio + SOC_HC_MAIN_IRQ_MASK_OFS;
+        } else {
+                hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE_OFS;
+                hpriv->main_irq_mask_addr  = mmio + PCI_HC_MAIN_IRQ_MASK_OFS;
         }
 
         /* global interrupt mask: 0 == mask everything */
@@ -3093,7 +3090,7 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)
                 mv_port_init(&ap->ioaddr, port_mmio);
 
 #ifdef CONFIG_PCI
-                if (HAS_PCI(host)) {
+                if (!IS_SOC(hpriv)) {
                         unsigned int offset = port_mmio - mmio;
                         ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio");
                         ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port");
@@ -3113,7 +3110,7 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)
                 writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
         }
 
-        if (HAS_PCI(host)) {
+        if (!IS_SOC(hpriv)) {
                 /* Clear any currently outstanding host interrupt conditions */
                 writelfl(0, mmio + hpriv->irq_cause_ofs);