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libata: fix native mode disabled port handling 

Disabled port handling in ata_pci_init_native_mode() is slightly
broken in that it may end up using the wrong port_info.  This patch
updates it such that disables ports are made dummy as done in the
legacy and other cases.

While at it, fix indentation in ata_resources_present().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-03-09 19:43:35 +09:00 committed by Jeff Garzik
parent 17199b187b
commit 55a6adeea4
1 changed files with 35 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
drivers/ata/libata-sff.c
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@ -526,8 +526,8 @@ static int ata_resources_present(struct pci_dev *pdev, int port)
port = port * 2;
for (i = 0; i < 2; i ++) {
if (pci_resource_start(pdev, port + i) == 0 ||
pci_resource_len(pdev, port + i) == 0)
return 0;
pci_resource_len(pdev, port + i) == 0)
return 0;
}
return 1;
}
@ -554,11 +554,26 @@ struct ata_probe_ent *
ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int ports)
{
struct ata_probe_ent *probe_ent;
int i, p = 0;
int i;
void __iomem * const *iomap;
/* Discard disabled ports. Some controllers show their unused
* channels this way. Disabled ports will be made dummy.
*/
if (ata_resources_present(pdev, 0) == 0)
ports &= ~ATA_PORT_PRIMARY;
if (ata_resources_present(pdev, 1) == 0)
ports &= ~ATA_PORT_SECONDARY;
if (!ports) {
dev_printk(KERN_ERR, &pdev->dev, "no available port\n");
return NULL;
}
/* iomap BARs */
for (i = 0; i < 4; i++) {
if (!(ports & (1 << (i / 2))))
continue;
if (pcim_iomap(pdev, i, 0) == NULL) {
dev_printk(KERN_ERR, &pdev->dev,
"failed to iomap PCI BAR %d\n", i);
@ -574,48 +589,41 @@ ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int
if (!probe_ent)
return NULL;
probe_ent->n_ports = 2;
probe_ent->irq = pdev->irq;
probe_ent->irq_flags = IRQF_SHARED;
/* Discard disabled ports. Some controllers show their
unused channels this way */
if (ata_resources_present(pdev, 0) == 0)
ports &= ~ATA_PORT_PRIMARY;
if (ata_resources_present(pdev, 1) == 0)
ports &= ~ATA_PORT_SECONDARY;
if (ports & ATA_PORT_PRIMARY) {
probe_ent->port[p].cmd_addr = iomap[0];
probe_ent->port[p].altstatus_addr =
probe_ent->port[p].ctl_addr = (void __iomem *)
probe_ent->port[0].cmd_addr = iomap[0];
probe_ent->port[0].altstatus_addr =
probe_ent->port[0].ctl_addr = (void __iomem *)
((unsigned long)iomap[1] | ATA_PCI_CTL_OFS);
if (iomap[4]) {
if ((!(port[p]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
if ((!(port[0]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
(ioread8(iomap[4] + 2) & 0x80))
probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
probe_ent->port[p].bmdma_addr = iomap[4];
probe_ent->port[0].bmdma_addr = iomap[4];
}
ata_std_ports(&probe_ent->port[p]);
p++;
}
ata_std_ports(&probe_ent->port[0]);
} else
probe_ent->dummy_port_mask |= ATA_PORT_PRIMARY;
if (ports & ATA_PORT_SECONDARY) {
probe_ent->port[p].cmd_addr = iomap[2];
probe_ent->port[p].altstatus_addr =
probe_ent->port[p].ctl_addr = (void __iomem *)
probe_ent->port[1].cmd_addr = iomap[2];
probe_ent->port[1].altstatus_addr =
probe_ent->port[1].ctl_addr = (void __iomem *)
((unsigned long)iomap[3] | ATA_PCI_CTL_OFS);
if (iomap[4]) {
if ((!(port[p]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
if ((!(port[1]->flags & ATA_FLAG_IGN_SIMPLEX)) &&
(ioread8(iomap[4] + 10) & 0x80))
probe_ent->_host_flags |= ATA_HOST_SIMPLEX;
probe_ent->port[p].bmdma_addr = iomap[4] + 8;
probe_ent->port[1].bmdma_addr = iomap[4] + 8;
}
ata_std_ports(&probe_ent->port[p]);
ata_std_ports(&probe_ent->port[1]);
probe_ent->pinfo2 = port[1];
p++;
}
} else
probe_ent->dummy_port_mask |= ATA_PORT_SECONDARY;
probe_ent->n_ports = p;
return probe_ent;
}