[PATCH] PCI: msi abstractions and support for altix

Abstract portions of the MSI core for platforms that do not use standard
APIC interrupt controllers.  This is implemented through a new arch-specific
msi setup routine, and a set of msi ops which can be set on a per platform
basis.

Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 12 insertions, 0 deletions

diff --git a/include/asm-ia64/msi.h b/include/asm-ia64/msi.h
index 97890f7762b3..bb92b0dbde2f 100644
--- a/include/asm-ia64/msi.h
+++ b/include/asm-ia64/msi.h
@@ -14,4 +14,16 @@ static inline void set_intr_gate (int nr, void *func) {}
 #define ack_APIC_irq            ia64_eoi
 #define MSI_TARGET_CPU_SHIFT    4
 
+extern struct msi_ops msi_apic_ops;
+
+static inline int msi_arch_init(void)
+{
+        if (platform_msi_init)
+                return platform_msi_init();
+
+        /* default ops for most ia64 platforms */
+        msi_register(&msi_apic_ops);
+        return 0;
+}
+
 #endif /* ASM_MSI_H */