1 files changed, 140 insertions, 19 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 08186ecbaf8d..15a23031833f 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -77,8 +77,6 @@ static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
                               size_t size);
 static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
                                         ssize_t size);
-#define MAX_SLOTS 8
-#define MAX_RETRY 15
 
 enum {
         AHCI_PCI_BAR            = 5,
@@ -220,6 +218,7 @@ enum {
         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 */
+        AHCI_HFLAG_NO_SUSPEND           = (1 << 10), /* don't suspend */
 
         /* ap->flags bits */
 
@@ -230,6 +229,10 @@ enum {
 
         ICH_MAP                         = 0x90, /* ICH MAP register */
 
+        /* em constants */
+        EM_MAX_SLOTS                    = 8,
+        EM_MAX_RETRY                    = 5,
+
         /* em_ctl bits */
         EM_CTL_RST                      = (1 << 9), /* Reset */
         EM_CTL_TM                       = (1 << 8), /* Transmit Message */
@@ -281,8 +284,8 @@ struct ahci_port_priv {
         unsigned int            ncq_saw_dmas:1;
         unsigned int            ncq_saw_sdb:1;
         u32                     intr_mask;      /* interrupts to enable */
-        struct ahci_em_priv     em_priv[MAX_SLOTS];/* enclosure management info
-                                                 * per PM slot */
+        /* enclosure management info per PM slot */
+        struct ahci_em_priv     em_priv[EM_MAX_SLOTS];
 };
 
 static int ahci_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
@@ -312,7 +315,6 @@ static void ahci_error_handler(struct ata_port *ap);
 static void ahci_post_internal_cmd(struct ata_queued_cmd *qc);
 static int ahci_port_resume(struct ata_port *ap);
 static void ahci_dev_config(struct ata_device *dev);
-static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl);
 static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag,
                                u32 opts);
 #ifdef CONFIG_PM
@@ -403,14 +405,14 @@ static struct ata_port_operations ahci_sb600_ops = {
 #define AHCI_HFLAGS(flags)      .private_data   = (void *)(flags)
 
 static const struct ata_port_info ahci_port_info[] = {
-        /* board_ahci */
+        [board_ahci] =
         {
                 .flags          = AHCI_FLAG_COMMON,
                 .pio_mask       = ATA_PIO4,
                 .udma_mask      = ATA_UDMA6,
                 .port_ops       = &ahci_ops,
         },
-        /* board_ahci_vt8251 */
+        [board_ahci_vt8251] =
         {
                 AHCI_HFLAGS     (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_PMP),
                 .flags          = AHCI_FLAG_COMMON,
@@ -418,7 +420,7 @@ static const struct ata_port_info ahci_port_info[] = {
                 .udma_mask      = ATA_UDMA6,
                 .port_ops       = &ahci_vt8251_ops,
         },
-        /* board_ahci_ign_iferr */
+        [board_ahci_ign_iferr] =
         {
                 AHCI_HFLAGS     (AHCI_HFLAG_IGN_IRQ_IF_ERR),
                 .flags          = AHCI_FLAG_COMMON,
@@ -426,17 +428,16 @@ static const struct ata_port_info ahci_port_info[] = {
                 .udma_mask      = ATA_UDMA6,
                 .port_ops       = &ahci_ops,
         },
-        /* board_ahci_sb600 */
+        [board_ahci_sb600] =
         {
                 AHCI_HFLAGS     (AHCI_HFLAG_IGN_SERR_INTERNAL |
-                                 AHCI_HFLAG_32BIT_ONLY | AHCI_HFLAG_NO_MSI |
-                                 AHCI_HFLAG_SECT255),
+                                 AHCI_HFLAG_NO_MSI | AHCI_HFLAG_SECT255),
                 .flags          = AHCI_FLAG_COMMON,
                 .pio_mask       = ATA_PIO4,
                 .udma_mask      = ATA_UDMA6,
                 .port_ops       = &ahci_sb600_ops,
         },
-        /* board_ahci_mv */
+        [board_ahci_mv] =
         {
                 AHCI_HFLAGS     (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
                                  AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
@@ -446,7 +447,7 @@ static const struct ata_port_info ahci_port_info[] = {
                 .udma_mask      = ATA_UDMA6,
                 .port_ops       = &ahci_ops,
         },
-        /* board_ahci_sb700, for SB700 and SB800 */
+        [board_ahci_sb700] =    /* for SB700 and SB800 */
         {
                 AHCI_HFLAGS     (AHCI_HFLAG_IGN_SERR_INTERNAL),
                 .flags          = AHCI_FLAG_COMMON,
@@ -454,7 +455,7 @@ static const struct ata_port_info ahci_port_info[] = {
                 .udma_mask      = ATA_UDMA6,
                 .port_ops       = &ahci_sb600_ops,
         },
-        /* board_ahci_mcp65 */
+        [board_ahci_mcp65] =
         {
                 AHCI_HFLAGS     (AHCI_HFLAG_YES_NCQ),
                 .flags          = AHCI_FLAG_COMMON,
@@ -462,7 +463,7 @@ static const struct ata_port_info ahci_port_info[] = {
                 .udma_mask      = ATA_UDMA6,
                 .port_ops       = &ahci_ops,
         },
-        /* board_ahci_nopmp */
+        [board_ahci_nopmp] =
         {
                 AHCI_HFLAGS     (AHCI_HFLAG_NO_PMP),
                 .flags          = AHCI_FLAG_COMMON,
@@ -1140,12 +1141,12 @@ static void ahci_start_port(struct ata_port *ap)
                         emp = &pp->em_priv[link->pmp];
 
                         /* EM Transmit bit maybe busy during init */
-                        for (i = 0; i < MAX_RETRY; i++) {
+                        for (i = 0; i < EM_MAX_RETRY; i++) {
                                 rc = ahci_transmit_led_message(ap,
                                                                emp->led_state,
                                                                4);
                                 if (rc == -EBUSY)
-                                        udelay(100);
+                                        msleep(1);
                                 else
                                         break;
                         }
@@ -1339,7 +1340,7 @@ static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
 
         /* get the slot number from the message */
         pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;
-        if (pmp < MAX_SLOTS)
+        if (pmp < EM_MAX_SLOTS)
                 emp = &pp->em_priv[pmp];
         else
                 return -EINVAL;
@@ -1407,7 +1408,7 @@ static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
 
         /* get the slot number from the message */
         pmp = (state & EM_MSG_LED_PMP_SLOT) >> 8;
-        if (pmp < MAX_SLOTS)
+        if (pmp < EM_MAX_SLOTS)
                 emp = &pp->em_priv[pmp];
         else
                 return -EINVAL;
@@ -2316,9 +2317,17 @@ static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg)
 static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
 {
         struct ata_host *host = dev_get_drvdata(&pdev->dev);
+        struct ahci_host_priv *hpriv = host->private_data;
         void __iomem *mmio = host->iomap[AHCI_PCI_BAR];
         u32 ctl;
 
+        if (mesg.event & PM_EVENT_SUSPEND &&
+            hpriv->flags & AHCI_HFLAG_NO_SUSPEND) {
+                dev_printk(KERN_ERR, &pdev->dev,
+                           "BIOS update required for suspend/resume\n");
+                return -EIO;
+        }
+
         if (mesg.event & PM_EVENT_SLEEP) {
                 /* AHCI spec rev1.1 section 8.3.3:
                  * Software must disable interrupts prior to requesting a
@@ -2575,6 +2584,51 @@ static void ahci_p5wdh_workaround(struct ata_host *host)
         }
 }
 
+/*
+ * SB600 ahci controller on ASUS M2A-VM can't do 64bit DMA with older
+ * BIOS.  The oldest version known to be broken is 0901 and working is
+ * 1501 which was released on 2007-10-26.  Force 32bit DMA on anything
+ * older than 1501.  Please read bko#9412 for more info.
+ */
+static bool ahci_asus_m2a_vm_32bit_only(struct pci_dev *pdev)
+{
+        static const struct dmi_system_id sysids[] = {
+                {
+                        .ident = "ASUS M2A-VM",
+                        .matches = {
+                                DMI_MATCH(DMI_BOARD_VENDOR,
+                                          "ASUSTeK Computer INC."),
+                                DMI_MATCH(DMI_BOARD_NAME, "M2A-VM"),
+                        },
+                },
+                { }
+        };
+        const char *cutoff_mmdd = "10/26";
+        const char *date;
+        int year;
+
+        if (pdev->bus->number != 0 || pdev->devfn != PCI_DEVFN(0x12, 0) ||
+            !dmi_check_system(sysids))
+                return false;
+
+        /*
+         * Argh.... both version and date are free form strings.
+         * Let's hope they're using the same date format across
+         * different versions.
+         */
+        date = dmi_get_system_info(DMI_BIOS_DATE);
+        year = dmi_get_year(DMI_BIOS_DATE);
+        if (date && strlen(date) >= 10 && date[2] == '/' && date[5] == '/' &&
+            (year > 2007 ||
+             (year == 2007 && strncmp(date, cutoff_mmdd, 5) >= 0)))
+                return false;
+
+        dev_printk(KERN_WARNING, &pdev->dev, "ASUS M2A-VM: BIOS too old, "
+                   "forcing 32bit DMA, update BIOS\n");
+
+        return true;
+}
+
 static bool ahci_broken_system_poweroff(struct pci_dev *pdev)
 {
         static const struct dmi_system_id broken_systems[] = {
@@ -2610,6 +2664,63 @@ static bool ahci_broken_system_poweroff(struct pci_dev *pdev)
         return false;
 }
 
+static bool ahci_broken_suspend(struct pci_dev *pdev)
+{
+        static const struct dmi_system_id sysids[] = {
+                /*
+                 * On HP dv[4-6] and HDX18 with earlier BIOSen, link
+                 * to the harddisk doesn't become online after
+                 * resuming from STR.  Warn and fail suspend.
+                 */
+                {
+                        .ident = "dv4",
+                        .matches = {
+                                DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                                DMI_MATCH(DMI_PRODUCT_NAME,
+                                          "HP Pavilion dv4 Notebook PC"),
+                        },
+                        .driver_data = "F.30", /* cutoff BIOS version */
+                },
+                {
+                        .ident = "dv5",
+                        .matches = {
+                                DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                                DMI_MATCH(DMI_PRODUCT_NAME,
+                                          "HP Pavilion dv5 Notebook PC"),
+                        },
+                        .driver_data = "F.16", /* cutoff BIOS version */
+                },
+                {
+                        .ident = "dv6",
+                        .matches = {
+                                DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                                DMI_MATCH(DMI_PRODUCT_NAME,
+                                          "HP Pavilion dv6 Notebook PC"),
+                        },
+                        .driver_data = "F.21",  /* cutoff BIOS version */
+                },
+                {
+                        .ident = "HDX18",
+                        .matches = {
+                                DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                                DMI_MATCH(DMI_PRODUCT_NAME,
+                                          "HP HDX18 Notebook PC"),
+                        },
+                        .driver_data = "F.23",  /* cutoff BIOS version */
+                },
+                { }     /* terminate list */
+        };
+        const struct dmi_system_id *dmi = dmi_first_match(sysids);
+        const char *ver;
+
+        if (!dmi || pdev->bus->number || pdev->devfn != PCI_DEVFN(0x1f, 2))
+                return false;
+
+        ver = dmi_get_system_info(DMI_BIOS_VERSION);
+
+        return !ver || strcmp(ver, dmi->driver_data) < 0;
+}
+
 static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
         static int printed_version;
@@ -2678,6 +2789,10 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         if (board_id == board_ahci_sb700 && pdev->revision >= 0x40)
                 hpriv->flags &= ~AHCI_HFLAG_IGN_SERR_INTERNAL;
 
+        /* apply ASUS M2A_VM quirk */
+        if (ahci_asus_m2a_vm_32bit_only(pdev))
+                hpriv->flags |= AHCI_HFLAG_32BIT_ONLY;
+
         if (!(hpriv->flags & AHCI_HFLAG_NO_MSI))
                 pci_enable_msi(pdev);
 
@@ -2715,6 +2830,12 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                         "quirky BIOS, skipping spindown on poweroff\n");
         }
 
+        if (ahci_broken_suspend(pdev)) {
+                hpriv->flags |= AHCI_HFLAG_NO_SUSPEND;
+                dev_printk(KERN_WARNING, &pdev->dev,
+                           "BIOS update required for suspend/resume\n");
+        }
+
         /* CAP.NP sometimes indicate the index of the last enabled
          * port, at other times, that of the last possible port, so
          * determining the maximum port number requires looking at