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path: root/drivers/scsi/sata_sil24.c
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Diffstat (limited to 'drivers/scsi/sata_sil24.c')
-rw-r--r--drivers/scsi/sata_sil24.c135
1 files changed, 88 insertions, 47 deletions
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index 07a1c6a8a414..3f368c7d3ef9 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -92,6 +92,7 @@ enum {
HOST_CTRL_STOP = (1 << 18), /* latched PCI STOP */
HOST_CTRL_DEVSEL = (1 << 19), /* latched PCI DEVSEL */
HOST_CTRL_REQ64 = (1 << 20), /* latched PCI REQ64 */
+ HOST_CTRL_GLOBAL_RST = (1 << 31), /* global reset */
/*
* Port registers
@@ -338,6 +339,7 @@ static int sil24_port_start(struct ata_port *ap);
static void sil24_port_stop(struct ata_port *ap);
static void sil24_host_stop(struct ata_host_set *host_set);
static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
+static int sil24_pci_device_resume(struct pci_dev *pdev);
static const struct pci_device_id sil24_pci_tbl[] = {
{ 0x1095, 0x3124, PCI_ANY_ID, PCI_ANY_ID, 0, 0, BID_SIL3124 },
@@ -353,6 +355,8 @@ static struct pci_driver sil24_pci_driver = {
.id_table = sil24_pci_tbl,
.probe = sil24_init_one,
.remove = ata_pci_remove_one, /* safe? */
+ .suspend = ata_pci_device_suspend,
+ .resume = sil24_pci_device_resume,
};
static struct scsi_host_template sil24_sht = {
@@ -372,6 +376,8 @@ static struct scsi_host_template sil24_sht = {
.slave_configure = ata_scsi_slave_config,
.slave_destroy = ata_scsi_slave_destroy,
.bios_param = ata_std_bios_param,
+ .suspend = ata_scsi_device_suspend,
+ .resume = ata_scsi_device_resume,
};
static const struct ata_port_operations sil24_ops = {
@@ -607,7 +613,7 @@ static int sil24_hardreset(struct ata_port *ap, unsigned int *class)
/* SStatus oscillates between zero and valid status after
* DEV_RST, debounce it.
*/
- rc = sata_phy_debounce(ap, sata_deb_timing_before_fsrst);
+ rc = sata_phy_debounce(ap, sata_deb_timing_long);
if (rc) {
reason = "PHY debouncing failed";
goto err;
@@ -988,6 +994,64 @@ static void sil24_host_stop(struct ata_host_set *host_set)
kfree(hpriv);
}
+static void sil24_init_controller(struct pci_dev *pdev, int n_ports,
+ unsigned long host_flags,
+ void __iomem *host_base,
+ void __iomem *port_base)
+{
+ u32 tmp;
+ int i;
+
+ /* GPIO off */
+ writel(0, host_base + HOST_FLASH_CMD);
+
+ /* clear global reset & mask interrupts during initialization */
+ writel(0, host_base + HOST_CTRL);
+
+ /* init ports */
+ for (i = 0; i < n_ports; i++) {
+ void __iomem *port = port_base + i * PORT_REGS_SIZE;
+
+ /* Initial PHY setting */
+ writel(0x20c, port + PORT_PHY_CFG);
+
+ /* Clear port RST */
+ tmp = readl(port + PORT_CTRL_STAT);
+ if (tmp & PORT_CS_PORT_RST) {
+ writel(PORT_CS_PORT_RST, port + PORT_CTRL_CLR);
+ tmp = ata_wait_register(port + PORT_CTRL_STAT,
+ PORT_CS_PORT_RST,
+ PORT_CS_PORT_RST, 10, 100);
+ if (tmp & PORT_CS_PORT_RST)
+ dev_printk(KERN_ERR, &pdev->dev,
+ "failed to clear port RST\n");
+ }
+
+ /* Configure IRQ WoC */
+ if (host_flags & SIL24_FLAG_PCIX_IRQ_WOC)
+ writel(PORT_CS_IRQ_WOC, port + PORT_CTRL_STAT);
+ else
+ writel(PORT_CS_IRQ_WOC, port + PORT_CTRL_CLR);
+
+ /* Zero error counters. */
+ writel(0x8000, port + PORT_DECODE_ERR_THRESH);
+ writel(0x8000, port + PORT_CRC_ERR_THRESH);
+ writel(0x8000, port + PORT_HSHK_ERR_THRESH);
+ writel(0x0000, port + PORT_DECODE_ERR_CNT);
+ writel(0x0000, port + PORT_CRC_ERR_CNT);
+ writel(0x0000, port + PORT_HSHK_ERR_CNT);
+
+ /* Always use 64bit activation */
+ writel(PORT_CS_32BIT_ACTV, port + PORT_CTRL_CLR);
+
+ /* Clear port multiplier enable and resume bits */
+ writel(PORT_CS_PM_EN | PORT_CS_RESUME, port + PORT_CTRL_CLR);
+ }
+
+ /* Turn on interrupts */
+ writel(IRQ_STAT_4PORTS, host_base + HOST_CTRL);
+}
+
static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
static int printed_version = 0;
@@ -1042,7 +1106,6 @@ static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
probe_ent->irq = pdev->irq;
probe_ent->irq_flags = IRQF_SHARED;
- probe_ent->mmio_base = port_base;
probe_ent->private_data = hpriv;
hpriv->host_base = host_base;
@@ -1076,9 +1139,6 @@ static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
}
}
- /* GPIO off */
- writel(0, host_base + HOST_FLASH_CMD);
-
/* Apply workaround for completion IRQ loss on PCI-X errata */
if (probe_ent->host_flags & SIL24_FLAG_PCIX_IRQ_WOC) {
tmp = readl(host_base + HOST_CTRL);
@@ -1090,56 +1150,18 @@ static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
probe_ent->host_flags &= ~SIL24_FLAG_PCIX_IRQ_WOC;
}
- /* clear global reset & mask interrupts during initialization */
- writel(0, host_base + HOST_CTRL);
-
for (i = 0; i < probe_ent->n_ports; i++) {
- void __iomem *port = port_base + i * PORT_REGS_SIZE;
- unsigned long portu = (unsigned long)port;
+ unsigned long portu =
+ (unsigned long)port_base + i * PORT_REGS_SIZE;
probe_ent->port[i].cmd_addr = portu;
probe_ent->port[i].scr_addr = portu + PORT_SCONTROL;
ata_std_ports(&probe_ent->port[i]);
-
- /* Initial PHY setting */
- writel(0x20c, port + PORT_PHY_CFG);
-
- /* Clear port RST */
- tmp = readl(port + PORT_CTRL_STAT);
- if (tmp & PORT_CS_PORT_RST) {
- writel(PORT_CS_PORT_RST, port + PORT_CTRL_CLR);
- tmp = ata_wait_register(port + PORT_CTRL_STAT,
- PORT_CS_PORT_RST,
- PORT_CS_PORT_RST, 10, 100);
- if (tmp & PORT_CS_PORT_RST)
- dev_printk(KERN_ERR, &pdev->dev,
- "failed to clear port RST\n");
- }
-
- /* Configure IRQ WoC */
- if (probe_ent->host_flags & SIL24_FLAG_PCIX_IRQ_WOC)
- writel(PORT_CS_IRQ_WOC, port + PORT_CTRL_STAT);
- else
- writel(PORT_CS_IRQ_WOC, port + PORT_CTRL_CLR);
-
- /* Zero error counters. */
- writel(0x8000, port + PORT_DECODE_ERR_THRESH);
- writel(0x8000, port + PORT_CRC_ERR_THRESH);
- writel(0x8000, port + PORT_HSHK_ERR_THRESH);
- writel(0x0000, port + PORT_DECODE_ERR_CNT);
- writel(0x0000, port + PORT_CRC_ERR_CNT);
- writel(0x0000, port + PORT_HSHK_ERR_CNT);
-
- /* Always use 64bit activation */
- writel(PORT_CS_32BIT_ACTV, port + PORT_CTRL_CLR);
-
- /* Clear port multiplier enable and resume bits */
- writel(PORT_CS_PM_EN | PORT_CS_RESUME, port + PORT_CTRL_CLR);
}
- /* Turn on interrupts */
- writel(IRQ_STAT_4PORTS, host_base + HOST_CTRL);
+ sil24_init_controller(pdev, probe_ent->n_ports, probe_ent->host_flags,
+ host_base, port_base);
pci_set_master(pdev);
@@ -1162,6 +1184,25 @@ static int sil24_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
return rc;
}
+static int sil24_pci_device_resume(struct pci_dev *pdev)
+{
+ struct ata_host_set *host_set = dev_get_drvdata(&pdev->dev);
+ struct sil24_host_priv *hpriv = host_set->private_data;
+
+ ata_pci_device_do_resume(pdev);
+
+ if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND)
+ writel(HOST_CTRL_GLOBAL_RST, hpriv->host_base + HOST_CTRL);
+
+ sil24_init_controller(pdev, host_set->n_ports,
+ host_set->ports[0]->flags,
+ hpriv->host_base, hpriv->port_base);
+
+ ata_host_set_resume(host_set);
+
+ return 0;
+}
+
static int __init sil24_init(void)
{
return pci_module_init(&sil24_pci_driver);
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-10 11:41:27 +0000