diff options
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 159 |
1 files changed, 111 insertions, 48 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index ca5229d24d8e..11e4eb9f304e 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -46,7 +46,7 @@ #include <linux/libata.h> #define DRV_NAME "ahci" -#define DRV_VERSION "2.2" +#define DRV_VERSION "2.3" enum { @@ -54,7 +54,7 @@ enum { AHCI_MAX_PORTS = 32, AHCI_MAX_SG = 168, /* hardware max is 64K */ AHCI_DMA_BOUNDARY = 0xffffffff, - AHCI_USE_CLUSTERING = 0, + AHCI_USE_CLUSTERING = 1, AHCI_MAX_CMDS = 32, AHCI_CMD_SZ = 32, AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ, @@ -81,6 +81,7 @@ enum { board_ahci_vt8251 = 2, board_ahci_ign_iferr = 3, board_ahci_sb600 = 4, + board_ahci_mv = 5, /* global controller registers */ HOST_CAP = 0x00, /* host capabilities */ @@ -171,6 +172,8 @@ enum { AHCI_FLAG_HONOR_PI = (1 << 26), /* honor PORTS_IMPL */ AHCI_FLAG_IGN_SERR_INTERNAL = (1 << 27), /* ignore SERR_INTERNAL */ AHCI_FLAG_32BIT_ONLY = (1 << 28), /* force 32bit */ + AHCI_FLAG_MV_PATA = (1 << 29), /* PATA port */ + AHCI_FLAG_NO_MSI = (1 << 30), /* no PCI MSI */ AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | @@ -228,9 +231,12 @@ static void ahci_thaw(struct ata_port *ap); static void ahci_error_handler(struct ata_port *ap); static void ahci_vt8251_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 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 static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg); -static int ahci_port_resume(struct ata_port *ap); static int ahci_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); static int ahci_pci_device_resume(struct pci_dev *pdev); #endif @@ -327,14 +333,14 @@ static const struct ata_port_info ahci_port_info[] = { { .flags = AHCI_FLAG_COMMON, .pio_mask = 0x1f, /* pio0-4 */ - .udma_mask = 0x7f, /* udma0-6 ; FIXME */ + .udma_mask = ATA_UDMA6, .port_ops = &ahci_ops, }, /* board_ahci_pi */ { .flags = AHCI_FLAG_COMMON | AHCI_FLAG_HONOR_PI, .pio_mask = 0x1f, /* pio0-4 */ - .udma_mask = 0x7f, /* udma0-6 ; FIXME */ + .udma_mask = ATA_UDMA6, .port_ops = &ahci_ops, }, /* board_ahci_vt8251 */ @@ -342,14 +348,14 @@ static const struct ata_port_info ahci_port_info[] = { .flags = AHCI_FLAG_COMMON | ATA_FLAG_HRST_TO_RESUME | AHCI_FLAG_NO_NCQ, .pio_mask = 0x1f, /* pio0-4 */ - .udma_mask = 0x7f, /* udma0-6 ; FIXME */ + .udma_mask = ATA_UDMA6, .port_ops = &ahci_vt8251_ops, }, /* board_ahci_ign_iferr */ { .flags = AHCI_FLAG_COMMON | AHCI_FLAG_IGN_IRQ_IF_ERR, .pio_mask = 0x1f, /* pio0-4 */ - .udma_mask = 0x7f, /* udma0-6 ; FIXME */ + .udma_mask = ATA_UDMA6, .port_ops = &ahci_ops, }, /* board_ahci_sb600 */ @@ -358,7 +364,19 @@ static const struct ata_port_info ahci_port_info[] = { AHCI_FLAG_IGN_SERR_INTERNAL | AHCI_FLAG_32BIT_ONLY, .pio_mask = 0x1f, /* pio0-4 */ - .udma_mask = 0x7f, /* udma0-6 ; FIXME */ + .udma_mask = ATA_UDMA6, + .port_ops = &ahci_ops, + }, + /* board_ahci_mv */ + { + .sht = &ahci_sht, + .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | + ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | + ATA_FLAG_SKIP_D2H_BSY | AHCI_FLAG_HONOR_PI | + AHCI_FLAG_NO_NCQ | AHCI_FLAG_NO_MSI | + AHCI_FLAG_MV_PATA, + .pio_mask = 0x1f, /* pio0-4 */ + .udma_mask = ATA_UDMA6, .port_ops = &ahci_ops, }, }; @@ -456,6 +474,9 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(SI, 0x1185), board_ahci }, /* SiS 966 */ { PCI_VDEVICE(SI, 0x0186), board_ahci }, /* SiS 968 */ + /* Marvell */ + { PCI_VDEVICE(MARVELL, 0x6145), board_ahci_mv }, /* 6145 */ + /* Generic, PCI class code for AHCI */ { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff, board_ahci }, @@ -481,11 +502,17 @@ static inline int ahci_nr_ports(u32 cap) return (cap & 0x1f) + 1; } -static inline void __iomem *ahci_port_base(struct ata_port *ap) +static inline void __iomem *__ahci_port_base(struct ata_host *host, + unsigned int port_no) { - void __iomem *mmio = ap->host->iomap[AHCI_PCI_BAR]; + void __iomem *mmio = host->iomap[AHCI_PCI_BAR]; + + return mmio + 0x100 + (port_no * 0x80); +} - return mmio + 0x100 + (ap->port_no * 0x80); +static inline void __iomem *ahci_port_base(struct ata_port *ap) +{ + return __ahci_port_base(ap->host, ap->port_no); } /** @@ -535,6 +562,20 @@ static void ahci_save_initial_config(struct pci_dev *pdev, hpriv->saved_port_map = port_map; } + /* + * Temporary Marvell 6145 hack: PATA port presence + * is asserted through the standard AHCI port + * presence register, as bit 4 (counting from 0) + */ + if (pi->flags & AHCI_FLAG_MV_PATA) { + dev_printk(KERN_ERR, &pdev->dev, + "MV_AHCI HACK: port_map %x -> %x\n", + hpriv->port_map, + hpriv->port_map & 0xf); + + port_map &= 0xf; + } + /* cross check port_map and cap.n_ports */ if (pi->flags & AHCI_FLAG_HONOR_PI) { u32 tmp_port_map = port_map; @@ -740,7 +781,7 @@ static void ahci_power_down(struct ata_port *ap) } #endif -static void ahci_init_port(struct ata_port *ap) +static void ahci_start_port(struct ata_port *ap) { /* enable FIS reception */ ahci_start_fis_rx(ap); @@ -814,39 +855,62 @@ static int ahci_reset_controller(struct ata_host *host) return 0; } +static void ahci_port_init(struct pci_dev *pdev, struct ata_port *ap, + int port_no, void __iomem *mmio, + void __iomem *port_mmio) +{ + const char *emsg = NULL; + int rc; + u32 tmp; + + /* make sure port is not active */ + rc = ahci_deinit_port(ap, &emsg); + if (rc) + dev_printk(KERN_WARNING, &pdev->dev, + "%s (%d)\n", emsg, rc); + + /* clear SError */ + tmp = readl(port_mmio + PORT_SCR_ERR); + VPRINTK("PORT_SCR_ERR 0x%x\n", tmp); + writel(tmp, port_mmio + PORT_SCR_ERR); + + /* clear port IRQ */ + tmp = readl(port_mmio + PORT_IRQ_STAT); + VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp); + if (tmp) + writel(tmp, port_mmio + PORT_IRQ_STAT); + + writel(1 << port_no, mmio + HOST_IRQ_STAT); +} + static void ahci_init_controller(struct ata_host *host) { struct pci_dev *pdev = to_pci_dev(host->dev); void __iomem *mmio = host->iomap[AHCI_PCI_BAR]; - int i, rc; + int i; + void __iomem *port_mmio; u32 tmp; - for (i = 0; i < host->n_ports; i++) { - struct ata_port *ap = host->ports[i]; - void __iomem *port_mmio = ahci_port_base(ap); - const char *emsg = NULL; - - if (ata_port_is_dummy(ap)) - continue; - - /* make sure port is not active */ - rc = ahci_deinit_port(ap, &emsg); - if (rc) - dev_printk(KERN_WARNING, &pdev->dev, - "%s (%d)\n", emsg, rc); + if (host->ports[0]->flags & AHCI_FLAG_MV_PATA) { + port_mmio = __ahci_port_base(host, 4); - /* clear SError */ - tmp = readl(port_mmio + PORT_SCR_ERR); - VPRINTK("PORT_SCR_ERR 0x%x\n", tmp); - writel(tmp, port_mmio + PORT_SCR_ERR); + writel(0, port_mmio + PORT_IRQ_MASK); /* clear port IRQ */ tmp = readl(port_mmio + PORT_IRQ_STAT); VPRINTK("PORT_IRQ_STAT 0x%x\n", tmp); if (tmp) writel(tmp, port_mmio + PORT_IRQ_STAT); + } - writel(1 << i, mmio + HOST_IRQ_STAT); + for (i = 0; i < host->n_ports; i++) { + struct ata_port *ap = host->ports[i]; + + port_mmio = ahci_port_base(ap); + if (ata_port_is_dummy(ap)) + continue; + + ahci_port_init(pdev, ap, i, mmio, port_mmio); } tmp = readl(mmio + HOST_CTL); @@ -1232,7 +1296,7 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat) ata_port_abort(ap); } -static void ahci_host_intr(struct ata_port *ap) +static void ahci_port_intr(struct ata_port *ap) { void __iomem *port_mmio = ap->ioaddr.cmd_addr; struct ata_eh_info *ehi = &ap->eh_info; @@ -1358,7 +1422,7 @@ static irqreturn_t ahci_interrupt(int irq, void *dev_instance) ap = host->ports[i]; if (ap) { - ahci_host_intr(ap); + ahci_port_intr(ap); VPRINTK("port %u\n", i); } else { VPRINTK("port %u (no irq)\n", i); @@ -1466,7 +1530,7 @@ static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg) ahci_power_down(ap); else { ata_port_printk(ap, KERN_ERR, "%s (%d)\n", emsg, rc); - ahci_init_port(ap); + ahci_start_port(ap); } return rc; @@ -1475,7 +1539,7 @@ static int ahci_port_suspend(struct ata_port *ap, pm_message_t mesg) static int ahci_port_resume(struct ata_port *ap) { ahci_power_up(ap); - ahci_init_port(ap); + ahci_start_port(ap); return 0; } @@ -1573,13 +1637,8 @@ static int ahci_port_start(struct ata_port *ap) ap->private_data = pp; - /* power up port */ - ahci_power_up(ap); - - /* initialize port */ - ahci_init_port(ap); - - return 0; + /* engage engines, captain */ + return ahci_port_resume(ap); } static void ahci_port_stop(struct ata_port *ap) @@ -1724,7 +1783,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (rc) return rc; - if (pci_enable_msi(pdev)) + if ((pi.flags & AHCI_FLAG_NO_MSI) || pci_enable_msi(pdev)) pci_intx(pdev, 1); hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL); @@ -1745,14 +1804,18 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) host->private_data = hpriv; for (i = 0; i < host->n_ports; i++) { - if (hpriv->port_map & (1 << i)) { - struct ata_port *ap = host->ports[i]; - void __iomem *port_mmio = ahci_port_base(ap); + struct ata_port *ap = host->ports[i]; + void __iomem *port_mmio = ahci_port_base(ap); + /* standard SATA port setup */ + if (hpriv->port_map & (1 << i)) { ap->ioaddr.cmd_addr = port_mmio; ap->ioaddr.scr_addr = port_mmio + PORT_SCR; - } else - host->ports[i]->ops = &ata_dummy_port_ops; + } + + /* disabled/not-implemented port */ + else + ap->ops = &ata_dummy_port_ops; } /* initialize adapter */ |
