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authorDavid Woodhouse <dwmw2@infradead.org>2007-01-01 19:31:15 +0000
committerJeff Garzik <jeff@garzik.org>2007-01-26 17:27:40 -0500
commit8cdf92a98fa0f91068615443f2a8597b7f2c34ca (patch)
treec33ae8216599533068dbcf2ef46c19a1f5b942a9 /include/asm-powerpc
parentdfd7a3db3898e299bdc25f0c77081a8632b3a73c (diff)
downloadop-kernel-dev-8cdf92a98fa0f91068615443f2a8597b7f2c34ca.zip
op-kernel-dev-8cdf92a98fa0f91068615443f2a8597b7f2c34ca.tar.gz
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>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/libata-portmap.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-powerpc/libata-portmap.h b/include/asm-powerpc/libata-portmap.h
new file mode 100644
index 0000000..4d85180
--- /dev/null
+++ b/include/asm-powerpc/libata-portmap.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_POWERPC_LIBATA_PORTMAP_H
+#define __ASM_POWERPC_LIBATA_PORTMAP_H
+
+#define ATA_PRIMARY_CMD 0x1F0
+#define ATA_PRIMARY_CTL 0x3F6
+#define ATA_PRIMARY_IRQ(dev) pci_get_legacy_ide_irq(dev, 0)
+
+#define ATA_SECONDARY_CMD 0x170
+#define ATA_SECONDARY_CTL 0x376
+#define ATA_SECONDARY_IRQ(dev) pci_get_legacy_ide_irq(dev, 1)
+
+#endif
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