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Automatic merge of /spare/repo/libata-dev branch ahci-msi

This commit is contained in:
2005-06-04 00:52:59 -04:00 committed by Jeff Garzik
parent 8be3de3fd8 4b0060f4bd
commit d3c39d14d1
1 changed files with 67 additions and 13 deletions
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80
drivers/scsi/ahci.c
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@ -39,7 +39,7 @@
#include <asm/io.h>
#define DRV_NAME "ahci"
#define DRV_VERSION "1.00"
#define DRV_VERSION "1.01"
enum {
@ -134,6 +134,9 @@ enum {
PORT_CMD_ICC_ACTIVE = (0x1 << 28), /* Put i/f in active state */
PORT_CMD_ICC_PARTIAL = (0x2 << 28), /* Put i/f in partial state */
PORT_CMD_ICC_SLUMBER = (0x6 << 28), /* Put i/f in slumber state */
/* hpriv->flags bits */
AHCI_FLAG_MSI = (1 << 0),
};
struct ahci_cmd_hdr {
@ -183,6 +186,7 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc);
static u8 ahci_check_status(struct ata_port *ap);
static u8 ahci_check_err(struct ata_port *ap);
static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
static void ahci_remove_one (struct pci_dev *pdev);
static Scsi_Host_Template ahci_sht = {
.module = THIS_MODULE,
@ -272,7 +276,7 @@ static struct pci_driver ahci_pci_driver = {
.name = DRV_NAME,
.id_table = ahci_pci_tbl,
.probe = ahci_init_one,
.remove = ata_pci_remove_one,
.remove = ahci_remove_one,
};
@ -795,8 +799,6 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent)
return rc;
}
}
hpriv->flags |= HOST_CAP_64;
} else {
rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
if (rc) {
@ -879,15 +881,19 @@ static int ahci_host_init(struct ata_probe_ent *probe_ent)
}
/* move to PCI layer, integrate w/ MSI stuff */
static void pci_enable_intx(struct pci_dev *pdev)
static void pci_intx(struct pci_dev *pdev, int enable)
{
u16 pci_command;
u16 pci_command, new;
pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
if (pci_command & PCI_COMMAND_INTX_DISABLE) {
pci_command &= ~PCI_COMMAND_INTX_DISABLE;
if (enable)
new = pci_command & ~PCI_COMMAND_INTX_DISABLE;
else
new = pci_command | PCI_COMMAND_INTX_DISABLE;
if (new != pci_command)
pci_write_config_word(pdev, PCI_COMMAND, pci_command);
}
}
static void ahci_print_info(struct ata_probe_ent *probe_ent)
@ -969,7 +975,7 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
unsigned long base;
void *mmio_base;
unsigned int board_idx = (unsigned int) ent->driver_data;
int pci_dev_busy = 0;
int have_msi, pci_dev_busy = 0;
int rc;
VPRINTK("ENTER\n");
@ -987,12 +993,17 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_out;
}
pci_enable_intx(pdev);
if (pci_enable_msi(pdev) == 0)
have_msi = 1;
else {
pci_intx(pdev, 1);
have_msi = 0;
}
probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
if (probe_ent == NULL) {
rc = -ENOMEM;
goto err_out_regions;
goto err_out_msi;
}
memset(probe_ent, 0, sizeof(*probe_ent));
@ -1025,6 +1036,9 @@ static int ahci_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
probe_ent->mmio_base = mmio_base;
probe_ent->private_data = hpriv;
if (have_msi)
hpriv->flags |= AHCI_FLAG_MSI;
/* initialize adapter */
rc = ahci_host_init(probe_ent);
if (rc)
@ -1044,7 +1058,11 @@ err_out_iounmap:
iounmap(mmio_base);
err_out_free_ent:
kfree(probe_ent);
err_out_regions:
err_out_msi:
if (have_msi)
pci_disable_msi(pdev);
else
pci_intx(pdev, 0);
pci_release_regions(pdev);
err_out:
if (!pci_dev_busy)
@ -1052,6 +1070,42 @@ err_out:
return rc;
}
static void ahci_remove_one (struct pci_dev *pdev)
{
struct device *dev = pci_dev_to_dev(pdev);
struct ata_host_set *host_set = dev_get_drvdata(dev);
struct ahci_host_priv *hpriv = host_set->private_data;
struct ata_port *ap;
unsigned int i;
int have_msi;
for (i = 0; i < host_set->n_ports; i++) {
ap = host_set->ports[i];
scsi_remove_host(ap->host);
}
have_msi = hpriv->flags & AHCI_FLAG_MSI;
free_irq(host_set->irq, host_set);
for (i = 0; i < host_set->n_ports; i++) {
ap = host_set->ports[i];
ata_scsi_release(ap->host);
scsi_host_put(ap->host);
}
host_set->ops->host_stop(host_set);
kfree(host_set);
if (have_msi)
pci_disable_msi(pdev);
else
pci_intx(pdev, 0);
pci_release_regions(pdev);
pci_disable_device(pdev);
dev_set_drvdata(dev, NULL);
}
static int __init ahci_init(void)
{