Fix Maple PATA IRQ assignment.

On the Maple board, the AMD8111 IDE is in legacy mode... except that it
appears on IRQ 20 instead of IRQ 15. For drivers/ide this was handled by
the architecture's "pci_get_legacy_ide_irq()" function, but in libata we
just hard-code the numbers 14 and 15.

This patch provides asm-powerpc/libata-portmap.h which maps the IRQ as
appropriate, having added a pci_dev argument to the
ATA_{PRIM,SECOND}ARY_IRQ macros.

There's probably a better way to do this -- especially if we observe
that the _only_ case in which this seemingly-generic
"pci_get_legacy_ide_irq()" function returns anything other than 14 and
15 for primary and secondary respectively is the case of the AMD8111 on
the Maple board -- couldn't we handle that with a special case in the
pata_amd driver, or perhaps with a PCI quirk for Maple to switch it into
native mode during early boot and assign resources properly?

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

2 files changed, 7 insertions, 3 deletions

diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index da21552d2b1c..1c94b43d2c9b 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -19,6 +19,10 @@ config ATA
 
 if ATA
 
+config ATA_NONSTANDARD
+       bool
+       default n
+
 config SATA_AHCI
         tristate "AHCI SATA support"
         depends on PCI
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 942aeba2940a..12c88c588039 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -917,7 +917,7 @@ static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev,
         probe_ent->irq_flags = IRQF_SHARED;
 
         if (port_mask & ATA_PORT_PRIMARY) {
-                probe_ent->irq = ATA_PRIMARY_IRQ;
+                probe_ent->irq = ATA_PRIMARY_IRQ(pdev);
                 probe_ent->port[0].cmd_addr = ATA_PRIMARY_CMD;
                 probe_ent->port[0].altstatus_addr =
                 probe_ent->port[0].ctl_addr = ATA_PRIMARY_CTL;
@@ -933,9 +933,9 @@ static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev,
 
         if (port_mask & ATA_PORT_SECONDARY) {
                 if (probe_ent->irq)
-                        probe_ent->irq2 = ATA_SECONDARY_IRQ;
+                        probe_ent->irq2 = ATA_SECONDARY_IRQ(pdev);
                 else
-                        probe_ent->irq = ATA_SECONDARY_IRQ;
+                        probe_ent->irq = ATA_SECONDARY_IRQ(pdev);
                 probe_ent->port[1].cmd_addr = ATA_SECONDARY_CMD;
                 probe_ent->port[1].altstatus_addr =
                 probe_ent->port[1].ctl_addr = ATA_SECONDARY_CTL;