diff options
Diffstat (limited to 'drivers/ata/ahci.c')
-rw-r--r-- | drivers/ata/ahci.c | 147 |
1 files changed, 108 insertions, 39 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index fe3eba5d6b3..acd1162712b 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -329,10 +329,24 @@ static ssize_t ahci_activity_store(struct ata_device *dev, enum sw_activity val); static void ahci_init_sw_activity(struct ata_link *link); +static ssize_t ahci_show_host_caps(struct device *dev, + struct device_attribute *attr, char *buf); +static ssize_t ahci_show_host_version(struct device *dev, + struct device_attribute *attr, char *buf); +static ssize_t ahci_show_port_cmd(struct device *dev, + struct device_attribute *attr, char *buf); + +DEVICE_ATTR(ahci_host_caps, S_IRUGO, ahci_show_host_caps, NULL); +DEVICE_ATTR(ahci_host_version, S_IRUGO, ahci_show_host_version, NULL); +DEVICE_ATTR(ahci_port_cmd, S_IRUGO, ahci_show_port_cmd, NULL); + static struct device_attribute *ahci_shost_attrs[] = { &dev_attr_link_power_management_policy, &dev_attr_em_message_type, &dev_attr_em_message, + &dev_attr_ahci_host_caps, + &dev_attr_ahci_host_version, + &dev_attr_ahci_port_cmd, NULL }; @@ -539,6 +553,12 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */ { PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */ + /* AMD */ + { PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD SB900 */ + /* AMD is using RAID class only for ahci controllers */ + { PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, + PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci }, + /* VIA */ { PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */ { PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */ @@ -702,6 +722,36 @@ static void ahci_enable_ahci(void __iomem *mmio) WARN_ON(1); } +static ssize_t ahci_show_host_caps(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct ata_port *ap = ata_shost_to_port(shost); + struct ahci_host_priv *hpriv = ap->host->private_data; + + return sprintf(buf, "%x\n", hpriv->cap); +} + +static ssize_t ahci_show_host_version(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct ata_port *ap = ata_shost_to_port(shost); + void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR]; + + return sprintf(buf, "%x\n", readl(mmio + HOST_VERSION)); +} + +static ssize_t ahci_show_port_cmd(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct ata_port *ap = ata_shost_to_port(shost); + void __iomem *port_mmio = ahci_port_base(ap); + + return sprintf(buf, "%x\n", readl(port_mmio + PORT_CMD)); +} + /** * ahci_save_initial_config - Save and fixup initial config values * @pdev: target PCI device @@ -1584,7 +1634,7 @@ static void ahci_fill_cmd_slot(struct ahci_port_priv *pp, unsigned int tag, pp->cmd_slot[tag].tbl_addr_hi = cpu_to_le32((cmd_tbl_dma >> 16) >> 16); } -static int ahci_kick_engine(struct ata_port *ap, int force_restart) +static int ahci_kick_engine(struct ata_port *ap) { void __iomem *port_mmio = ahci_port_base(ap); struct ahci_host_priv *hpriv = ap->host->private_data; @@ -1592,18 +1642,16 @@ static int ahci_kick_engine(struct ata_port *ap, int force_restart) u32 tmp; int busy, rc; - /* do we need to kick the port? */ - busy = status & (ATA_BUSY | ATA_DRQ); - if (!busy && !force_restart) - return 0; - /* stop engine */ rc = ahci_stop_engine(ap); if (rc) goto out_restart; - /* need to do CLO? */ - if (!busy) { + /* need to do CLO? + * always do CLO if PMP is attached (AHCI-1.3 9.2) + */ + busy = status & (ATA_BUSY | ATA_DRQ); + if (!busy && !sata_pmp_attached(ap)) { rc = 0; goto out_restart; } @@ -1651,7 +1699,7 @@ static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp, tmp = ata_wait_register(port_mmio + PORT_CMD_ISSUE, 0x1, 0x1, 1, timeout_msec); if (tmp & 0x1) { - ahci_kick_engine(ap, 1); + ahci_kick_engine(ap); return -EBUSY; } } else @@ -1674,7 +1722,7 @@ static int ahci_do_softreset(struct ata_link *link, unsigned int *class, DPRINTK("ENTER\n"); /* prepare for SRST (AHCI-1.1 10.4.1) */ - rc = ahci_kick_engine(ap, 1); + rc = ahci_kick_engine(ap); if (rc && rc != -EOPNOTSUPP) ata_link_printk(link, KERN_WARNING, "failed to reset engine (errno=%d)\n", rc); @@ -1890,7 +1938,7 @@ static int ahci_p5wdh_hardreset(struct ata_link *link, unsigned int *class, rc = ata_wait_after_reset(link, jiffies + 2 * HZ, ahci_check_ready); if (rc) - ahci_kick_engine(ap, 0); + ahci_kick_engine(ap); } return rc; } @@ -2271,7 +2319,7 @@ static void ahci_post_internal_cmd(struct ata_queued_cmd *qc) /* make DMA engine forget about the failed command */ if (qc->flags & ATA_QCFLAG_FAILED) - ahci_kick_engine(ap, 1); + ahci_kick_engine(ap); } static void ahci_pmp_attach(struct ata_port *ap) @@ -2603,14 +2651,18 @@ 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. + * SB600 ahci controller on certain boards can't do 64bit DMA with + * older BIOS. */ -static bool ahci_asus_m2a_vm_32bit_only(struct pci_dev *pdev) +static bool ahci_sb600_32bit_only(struct pci_dev *pdev) { static const struct dmi_system_id sysids[] = { + /* + * 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. + */ { .ident = "ASUS M2A-VM", .matches = { @@ -2618,31 +2670,48 @@ static bool ahci_asus_m2a_vm_32bit_only(struct pci_dev *pdev) "ASUSTeK Computer INC."), DMI_MATCH(DMI_BOARD_NAME, "M2A-VM"), }, + .driver_data = "20071026", /* yyyymmdd */ + }, + /* + * It's yet unknown whether more recent BIOS fixes the + * problem. Blacklist the whole board for the time + * being. Please read the following thread for more + * info. + * + * http://thread.gmane.org/gmane.linux.ide/42326 + */ + { + .ident = "Gigabyte GA-MA69VM-S2", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, + "Gigabyte Technology Co., Ltd."), + DMI_MATCH(DMI_BOARD_NAME, "GA-MA69VM-S2"), + }, }, { } }; - const char *cutoff_mmdd = "10/26"; - const char *date; - int year; + const struct dmi_system_id *match; + match = dmi_first_match(sysids); if (pdev->bus->number != 0 || pdev->devfn != PCI_DEVFN(0x12, 0) || - !dmi_check_system(sysids)) + !match) 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; + if (match->driver_data) { + int year, month, date; + char buf[9]; + + dmi_get_date(DMI_BIOS_DATE, &year, &month, &date); + snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date); - dev_printk(KERN_WARNING, &pdev->dev, "ASUS M2A-VM: BIOS too old, " - "forcing 32bit DMA, update BIOS\n"); + if (strcmp(buf, match->driver_data) >= 0) + return false; + + dev_printk(KERN_WARNING, &pdev->dev, "%s: BIOS too old, " + "forcing 32bit DMA, update BIOS\n", match->ident); + } else + dev_printk(KERN_WARNING, &pdev->dev, "%s: this board can't " + "do 64bit DMA, forcing 32bit\n", match->ident); return true; } @@ -2857,19 +2926,19 @@ 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)) + /* apply sb600 32bit only quirk */ + if (ahci_sb600_32bit_only(pdev)) hpriv->flags |= AHCI_HFLAG_32BIT_ONLY; - if (!(hpriv->flags & AHCI_HFLAG_NO_MSI)) - pci_enable_msi(pdev); + if ((hpriv->flags & AHCI_HFLAG_NO_MSI) || pci_enable_msi(pdev)) + pci_intx(pdev, 1); /* save initial config */ ahci_save_initial_config(pdev, hpriv); /* prepare host */ if (hpriv->cap & HOST_CAP_NCQ) - pi.flags |= ATA_FLAG_NCQ; + pi.flags |= ATA_FLAG_NCQ | ATA_FLAG_FPDMA_AA; if (hpriv->cap & HOST_CAP_PMP) pi.flags |= ATA_FLAG_PMP; |