5 files changed, 145 insertions, 52 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 6978469eb16d..17ee6ed985d9 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -49,6 +49,10 @@
 #define DRV_NAME        "ahci"
 #define DRV_VERSION     "3.0"
 
+static int ahci_skip_host_reset;
+module_param_named(skip_host_reset, ahci_skip_host_reset, int, 0444);
+MODULE_PARM_DESC(skip_host_reset, "skip global host reset (0=don't skip, 1=skip)");
+
 static int ahci_enable_alpm(struct ata_port *ap,
                 enum link_pm policy);
 static void ahci_disable_alpm(struct ata_port *ap);
@@ -587,6 +591,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 
         /* Marvell */
         { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv },        /* 6145 */
+        { PCI_VDEVICE(MARVELL, 0x6121), board_ahci_mv },        /* 6121 */
 
         /* Generic, PCI class code for AHCI */
         { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
@@ -661,6 +666,7 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
         void __iomem *mmio = pcim_iomap_table(pdev)[AHCI_PCI_BAR];
         u32 cap, port_map;
         int i;
+        int mv;
 
         /* make sure AHCI mode is enabled before accessing CAP */
         ahci_enable_ahci(mmio);
@@ -696,12 +702,16 @@ static void ahci_save_initial_config(struct pci_dev *pdev,
          * presence register, as bit 4 (counting from 0)
          */
         if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
+                if (pdev->device == 0x6121)
+                        mv = 0x3;
+                else
+                        mv = 0xf;
                 dev_printk(KERN_ERR, &pdev->dev,
                            "MV_AHCI HACK: port_map %x -> %x\n",
-                           hpriv->port_map,
-                           hpriv->port_map & 0xf);
+                           port_map,
+                           port_map & mv);
 
-                port_map &= 0xf;
+                port_map &= mv;
         }
 
         /* cross check port_map and cap.n_ports */
@@ -1088,29 +1098,35 @@ static int ahci_reset_controller(struct ata_host *host)
         ahci_enable_ahci(mmio);
 
         /* global controller reset */
-        tmp = readl(mmio + HOST_CTL);
-        if ((tmp & HOST_RESET) == 0) {
-                writel(tmp | HOST_RESET, mmio + HOST_CTL);
-                readl(mmio + HOST_CTL); /* flush */
-        }
+        if (!ahci_skip_host_reset) {
+                tmp = readl(mmio + HOST_CTL);
+                if ((tmp & HOST_RESET) == 0) {
+                        writel(tmp | HOST_RESET, mmio + HOST_CTL);
+                        readl(mmio + HOST_CTL); /* flush */
+                }
 
-        /* reset must complete within 1 second, or
-         * the hardware should be considered fried.
-         */
-        ssleep(1);
+                /* reset must complete within 1 second, or
+                 * the hardware should be considered fried.
+                 */
+                ssleep(1);
 
-        tmp = readl(mmio + HOST_CTL);
-        if (tmp & HOST_RESET) {
-                dev_printk(KERN_ERR, host->dev,
-                           "controller reset failed (0x%x)\n", tmp);
-                return -EIO;
-        }
+                tmp = readl(mmio + HOST_CTL);
+                if (tmp & HOST_RESET) {
+                        dev_printk(KERN_ERR, host->dev,
+                                   "controller reset failed (0x%x)\n", tmp);
+                        return -EIO;
+                }
 
-        /* turn on AHCI mode */
-        ahci_enable_ahci(mmio);
+                /* turn on AHCI mode */
+                ahci_enable_ahci(mmio);
 
-        /* some registers might be cleared on reset.  restore initial values */
-        ahci_restore_initial_config(host);
+                /* Some registers might be cleared on reset.  Restore
+                 * initial values.
+                 */
+                ahci_restore_initial_config(host);
+        } else
+                dev_printk(KERN_INFO, host->dev,
+                           "skipping global host reset\n");
 
         if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
                 u16 tmp16;
@@ -1162,9 +1178,14 @@ static void ahci_init_controller(struct ata_host *host)
         int i;
         void __iomem *port_mmio;
         u32 tmp;
+        int mv;
 
         if (hpriv->flags & AHCI_HFLAG_MV_PATA) {
-                port_mmio = __ahci_port_base(host, 4);
+                if (pdev->device == 0x6121)
+                        mv = 2;
+                else
+                        mv = 4;
+                port_mmio = __ahci_port_base(host, mv);
 
                 writel(0, port_mmio + PORT_IRQ_MASK);
 
@@ -2241,7 +2262,10 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         if (rc)
                 return rc;
 
-        rc = pcim_iomap_regions(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
+        /* AHCI controllers often implement SFF compatible interface.
+         * Grab all PCI BARs just in case.
+         */
+        rc = pcim_iomap_regions_request_all(pdev, 1 << AHCI_PCI_BAR, DRV_NAME);
         if (rc == -EBUSY)
                 pcim_pin_device(pdev);
         if (rc)
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 0770cb7391a4..bf98a566adac 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -118,45 +118,77 @@ 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 kobject *kobj,
+static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
                                     u32 event)
 {
         char event_string[12];
         char *envp[] = { event_string, NULL };
-        struct ata_eh_info *ehi = &ap->link.eh_info;
-
-        if (event == 0 || event == 1) {
-               unsigned long flags;
-               spin_lock_irqsave(ap->lock, flags);
-               ata_ehi_clear_desc(ehi);
-               ata_ehi_push_desc(ehi, "ACPI event");
-               ata_ehi_hotplugged(ehi);
-               ata_port_freeze(ap);
-               spin_unlock_irqrestore(ap->lock, flags);
+        struct ata_eh_info *ehi;
+        struct kobject *kobj = NULL;
+        int wait = 0;
+        unsigned long flags;
+
+        if (!ap)
+                ap = dev->link->ap;
+        ehi = &ap->link.eh_info;
+
+        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");
+                ata_ehi_hotplugged(ehi);
+                ata_port_freeze(ap);
+                break;
+
+        case ACPI_NOTIFY_EJECT_REQUEST:
+                ata_ehi_push_desc(ehi, "ACPI event");
+                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;
+                break;
         }
 
+        if (dev) {
+                if (dev->sdev)
+                        kobj = &dev->sdev->sdev_gendev.kobj;
+        } else
+                kobj = &ap->dev->kobj;
+
         if (kobj) {
                 sprintf(event_string, "BAY_EVENT=%d", event);
                 kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
         }
+
+        spin_unlock_irqrestore(ap->lock, flags);
+
+        if (wait)
+                ata_port_wait_eh(ap);
 }
 
 static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data)
 {
         struct ata_device *dev = data;
-        struct kobject *kobj = NULL;
 
-        if (dev->sdev)
-                kobj = &dev->sdev->sdev_gendev.kobj;
-
-        ata_acpi_handle_hotplug(dev->link->ap, kobj, event);
+        ata_acpi_handle_hotplug(NULL, dev, event);
 }
 
 static void ata_acpi_ap_notify(acpi_handle handle, u32 event, void *data)
 {
         struct ata_port *ap = data;
 
-        ata_acpi_handle_hotplug(ap, &ap->dev->kobj, event);
+        ata_acpi_handle_hotplug(ap, NULL, event);
 }
 
 /**
@@ -191,20 +223,30 @@ void ata_acpi_associate(struct ata_host *host)
                 else
                         ata_acpi_associate_ide_port(ap);
 
-                if (ap->acpi_handle)
-                        acpi_install_notify_handler (ap->acpi_handle,
-                                                     ACPI_SYSTEM_NOTIFY,
-                                                     ata_acpi_ap_notify,
-                                                     ap);
+                if (ap->acpi_handle) {
+                        acpi_install_notify_handler(ap->acpi_handle,
+                                                    ACPI_SYSTEM_NOTIFY,
+                                                    ata_acpi_ap_notify, ap);
+#if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE)
+                        /* we might be on a docking station */
+                        register_hotplug_dock_device(ap->acpi_handle,
+                                                     ata_acpi_ap_notify, ap);
+#endif
+                }
 
                 for (j = 0; j < ata_link_max_devices(&ap->link); j++) {
                         struct ata_device *dev = &ap->link.device[j];
 
-                        if (dev->acpi_handle)
-                                acpi_install_notify_handler (dev->acpi_handle,
-                                                             ACPI_SYSTEM_NOTIFY,
-                                                             ata_acpi_dev_notify,
-                                                             dev);
+                        if (dev->acpi_handle) {
+                                acpi_install_notify_handler(dev->acpi_handle,
+                                                ACPI_SYSTEM_NOTIFY,
+                                                ata_acpi_dev_notify, dev);
+#if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE)
+                                /* we might be on a docking station */
+                                register_hotplug_dock_device(dev->acpi_handle,
+                                                ata_acpi_dev_notify, dev);
+#endif
+                        }
                 }
         }
 }
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index 7e68edf3c0f3..8786455c901d 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -295,7 +295,7 @@ static void ali_lock_sectors(struct ata_device *adev)
 static int ali_check_atapi_dma(struct ata_queued_cmd *qc)
 {
         /* If its not a media command, its not worth it */
-        if (qc->nbytes < 2048)
+        if (atapi_cmd_type(qc->cdb[0]) == ATAPI_MISC)
                 return -EOPNOTSUPP;
         return 0;
 }
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 9010f5458767..b7e4b633c69b 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1045,6 +1045,8 @@ void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
 void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
 void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
 int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);
+int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
+                                   const char *name);
 void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
 
 extern int pci_pci_problems;
diff --git a/lib/devres.c b/lib/devres.c
index b1d336ce7f3d..edc27a5d1b73 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -298,6 +298,31 @@ int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name)
 EXPORT_SYMBOL(pcim_iomap_regions);
 
 /**
+ * pcim_iomap_regions_request_all - Request all BARs and iomap specified ones
+ * @pdev: PCI device to map IO resources for
+ * @mask: Mask of BARs to iomap
+ * @name: Name used when requesting regions
+ *
+ * Request all PCI BARs and iomap regions specified by @mask.
+ */
+int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
+                                   const char *name)
+{
+        int request_mask = ((1 << 6) - 1) & ~mask;
+        int rc;
+
+        rc = pci_request_selected_regions(pdev, request_mask, name);
+        if (rc)
+                return rc;
+
+        rc = pcim_iomap_regions(pdev, mask, name);
+        if (rc)
+                pci_release_selected_regions(pdev, request_mask);
+        return rc;
+}
+EXPORT_SYMBOL(pcim_iomap_regions_request_all);
+
+/**
  * pcim_iounmap_regions - Unmap and release PCI BARs
  * @pdev: PCI device to map IO resources for
  * @mask: Mask of BARs to unmap and release