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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 <[email protected]> Signed-off-by: Jeff Garzik <[email protected]>
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#ifndef __ASM_POWERPC_LIBATA_PORTMAP_H | ||
#define __ASM_POWERPC_LIBATA_PORTMAP_H | ||
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#define ATA_PRIMARY_CMD 0x1F0 | ||
#define ATA_PRIMARY_CTL 0x3F6 | ||
#define ATA_PRIMARY_IRQ(dev) pci_get_legacy_ide_irq(dev, 0) | ||
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#define ATA_SECONDARY_CMD 0x170 | ||
#define ATA_SECONDARY_CTL 0x376 | ||
#define ATA_SECONDARY_IRQ(dev) pci_get_legacy_ide_irq(dev, 1) | ||
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#endif |