[ARM] iop13xx: msi support

Enable devices to signal interrupts via PCI memory cycles.

rev6:
* fix enable/disable typo, Michael Ellerman

rev5:
* fix up ack, enable, and disable for iop13xx_msi_chip

rev4:
* move smp compile fix to separate patch
* use dynamic_irq_init in create_irq()
* hookup mask/unmask routines in iop13xx_msi_chip

rev3:
* change msi.c to use linux/smp.h instead of asm/smp.h
* call dynamic_irq_cleanup at destroy_irq time

rev2:
* destroy_irq did not take the full 128 bits of msi_irq_in_use into account
* added missing '&' for calls to test_and_set_bit and clear_bit

[ebiederm@xmission.com: review comments/suggestions]
[dan.j.williams@intel.com: cleanups/forward port to 2.6-git]
Signed-off-by: Daniel Wolstenholme <daniel.e.wolstenholme@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 7 insertions, 1 deletions

diff --git a/include/asm-arm/arch-iop13xx/irqs.h b/include/asm-arm/arch-iop13xx/irqs.h
index 5c6fac2a4004..054e7acb5bfa 100644
--- a/include/asm-arm/arch-iop13xx/irqs.h
+++ b/include/asm-arm/arch-iop13xx/irqs.h
@@ -168,7 +168,7 @@ static inline u32 read_intpnd_3(void)
 #define IRQ_IOP13XX_ATUE_IMD    (110) /* 14 */
 #define IRQ_IOP13XX_MU_MSI_TB   (111) /* 15 */
 #define IRQ_IOP13XX_RSVD_112    (112) /* 16 */
-#define IRQ_IOP13XX_RSVD_113    (113) /* 17 */
+#define IRQ_IOP13XX_INBD_MSI    (113) /* 17 */
 #define IRQ_IOP13XX_RSVD_114    (114) /* 18 */
 #define IRQ_IOP13XX_RSVD_115    (115) /* 19 */
 #define IRQ_IOP13XX_RSVD_116    (116) /* 20 */
@@ -184,7 +184,13 @@ static inline u32 read_intpnd_3(void)
 #define IRQ_IOP13XX_RSVD_126    (126) /* 30 */
 #define IRQ_IOP13XX_HPI (127) /* 31 */
 
+#ifdef CONFIG_PCI_MSI
+#define IRQ_IOP13XX_MSI_0       (IRQ_IOP13XX_HPI + 1)
+#define NR_IOP13XX_IRQS         (IRQ_IOP13XX_MSI_0 + 128)
+#else
 #define NR_IOP13XX_IRQS (IRQ_IOP13XX_HPI + 1)
+#endif
+
 #define NR_IRQS         NR_IOP13XX_IRQS
 
 #endif /* _IOP13XX_IRQ_H_ */