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[libata sata_mv] hardware initialization work
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Implement flash reset and PCI reset on 50xx and 60xx.
Implement LED enable on 50xx.
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Jeff Garzik committed Nov 13, 2005
1 parent 47c2b67 commit 522479f
Showing 1 changed file with 105 additions and 12 deletions.
117 changes: 105 additions & 12 deletions drivers/scsi/sata_mv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@ enum {
MV_PCI_REG_BASE = 0,
MV_IRQ_COAL_REG_BASE = 0x18000, /* 6xxx part only */
MV_SATAHC0_REG_BASE = 0x20000,
MV_FLASH_CTL = 0x1046c,
MV_GPIO_PORT_CTL = 0x104f0,
MV_RESET_CFG = 0x180d8,

Expand Down Expand Up @@ -87,12 +88,6 @@ enum {
ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO),
MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE,

chip_504x = 0,
chip_508x = 1,
chip_5080 = 2,
chip_604x = 3,
chip_608x = 4,

CRQB_FLAG_READ = (1 << 0),
CRQB_TAG_SHIFT = 1,
CRQB_CMD_ADDR_SHIFT = 8,
Expand All @@ -112,8 +107,19 @@ enum {
PCI_MASTER_EMPTY = (1 << 3),
GLOB_SFT_RST = (1 << 4),

PCI_IRQ_CAUSE_OFS = 0x1d58,
PCI_IRQ_MASK_OFS = 0x1d5c,
MV_PCI_MODE = 0xd00,
MV_PCI_EXP_ROM_BAR_CTL = 0xd2c,
MV_PCI_DISC_TIMER = 0xd04,
MV_PCI_MSI_TRIGGER = 0xc38,
MV_PCI_SERR_MASK = 0xc28,
MV_PCI_XBAR_TMOUT = 0x1d04,
MV_PCI_ERR_LOW_ADDRESS = 0x1d40,
MV_PCI_ERR_HIGH_ADDRESS = 0x1d44,
MV_PCI_ERR_ATTRIBUTE = 0x1d48,
MV_PCI_ERR_COMMAND = 0x1d50,

PCI_IRQ_CAUSE_OFS = 0x1d58,
PCI_IRQ_MASK_OFS = 0x1d5c,
PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */

HC_MAIN_IRQ_CAUSE_OFS = 0x1d60,
Expand Down Expand Up @@ -236,6 +242,14 @@ enum {
EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
};

enum chip_type {
chip_504x,
chip_508x,
chip_5080,
chip_604x,
chip_608x,
};

/* Command ReQuest Block: 32B */
struct mv_crqb {
u32 sg_addr;
Expand Down Expand Up @@ -284,6 +298,8 @@ struct mv_hw_ops {
void (*read_preamp)(struct mv_host_priv *hpriv, int idx,
void __iomem *mmio);
int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio);
void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio);
void (*reset_bus)(struct pci_dev *pdev, void __iomem *mmio);
};

struct mv_host_priv {
Expand Down Expand Up @@ -311,12 +327,16 @@ static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
void __iomem *mmio);
static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio);
static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio);

static void mv6_phy_errata(struct ata_port *ap);
static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
void __iomem *mmio);
static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio);
static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio);

static struct scsi_host_template mv_sht = {
.module = THIS_MODULE,
Expand Down Expand Up @@ -433,13 +453,17 @@ static const struct mv_hw_ops mv5xxx_ops = {
.enable_leds = mv5_enable_leds,
.read_preamp = mv5_read_preamp,
.reset_hc = mv5_reset_hc,
.reset_flash = mv5_reset_flash,
.reset_bus = mv5_reset_bus,
};

static const struct mv_hw_ops mv6xxx_ops = {
.phy_errata = mv6_phy_errata,
.enable_leds = mv6_enable_leds,
.read_preamp = mv6_read_preamp,
.reset_hc = mv6_reset_hc,
.reset_flash = mv6_reset_flash,
.reset_bus = mv_reset_pci_bus,
};

/*
Expand Down Expand Up @@ -655,9 +679,45 @@ static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
}
}

#undef ZERO
#define ZERO(reg) writel(0, mmio + (reg))
static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio)
{
u32 tmp;

tmp = readl(mmio + MV_PCI_MODE);
tmp &= 0xff00ffff;
writel(tmp, mmio + MV_PCI_MODE);

ZERO(MV_PCI_DISC_TIMER);
ZERO(MV_PCI_MSI_TRIGGER);
writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT);
ZERO(HC_MAIN_IRQ_MASK_OFS);
ZERO(MV_PCI_SERR_MASK);
ZERO(PCI_IRQ_CAUSE_OFS);
ZERO(PCI_IRQ_MASK_OFS);
ZERO(MV_PCI_ERR_LOW_ADDRESS);
ZERO(MV_PCI_ERR_HIGH_ADDRESS);
ZERO(MV_PCI_ERR_ATTRIBUTE);
ZERO(MV_PCI_ERR_COMMAND);
}
#undef ZERO

static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
{
u32 tmp;

mv5_reset_flash(hpriv, mmio);

tmp = readl(mmio + MV_GPIO_PORT_CTL);
tmp &= 0x3;
tmp |= (1 << 5) | (1 << 6);
writel(tmp, mmio + MV_GPIO_PORT_CTL);
}

/**
* mv_global_soft_reset - Perform the 6xxx global soft reset
* @mmio_base: base address of the HBA
* mv6_reset_hc - Perform the 6xxx global soft reset
* @mmio: base address of the HBA
*
* This routine only applies to 6xxx parts.
*
Expand Down Expand Up @@ -1273,6 +1333,29 @@ static irqreturn_t mv_interrupt(int irq, void *dev_instance,
return IRQ_RETVAL(handled);
}

static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio)
{
u8 rev_id;
int early_5080;

pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);

early_5080 = (pdev->device == 0x5080) && (rev_id == 0);

if (!early_5080) {
u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
tmp |= (1 << 0);
writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
}

mv_reset_pci_bus(pdev, mmio);
}

static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
{
writel(0x0fcfffff, mmio + MV_FLASH_CTL);
}

static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
void __iomem *mmio)
{
Expand All @@ -1281,7 +1364,15 @@ static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,

static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
{
/* FIXME */
u32 tmp;

writel(0, mmio + MV_GPIO_PORT_CTL);

/* FIXME: handle MV_HP_ERRATA_50XXB2 errata */

tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
tmp |= ~(1 << 0);
writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
}

static void mv5_phy_errata(struct ata_port *ap)
Expand Down Expand Up @@ -1564,7 +1655,7 @@ static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
}

static int mv_chip_id(struct pci_dev *pdev, struct mv_host_priv *hpriv,
unsigned int board_idx)
unsigned int board_idx)
{
u8 rev_id;
u32 hp_flags = hpriv->hp_flags;
Expand Down Expand Up @@ -1676,6 +1767,8 @@ static int mv_init_host(struct pci_dev *pdev, struct ata_probe_ent *probe_ent,
if (rc)
goto done;

hpriv->ops->reset_flash(hpriv, mmio);
hpriv->ops->reset_bus(pdev, mmio);
hpriv->ops->enable_leds(hpriv, mmio);

for (port = 0; port < probe_ent->n_ports; port++) {
Expand Down

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