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authorJoerg Roedel <joerg.roedel@amd.com>2012-06-26 16:46:04 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2012-09-28 17:43:52 +0200
commit6b474b8224cdb473f19e8c925171e608499cc45d (patch)
treed52191a42b4b9292b1908003245abcf852c6919b /drivers/iommu/amd_iommu_init.c
parentd976195c93bce4512e990d170858d20d71c95c45 (diff)
iommu/amd: Add initialization routines for AMD interrupt remapping
Add the six routines required to setup interrupt remapping with the AMD IOMMU. Also put it all together into the AMD specific irq_remap_ops. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/amd_iommu_init.c')
-rw-r--r--drivers/iommu/amd_iommu_init.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 68b3305a126a..d536d24b6f34 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -34,6 +34,7 @@
#include <asm/x86_init.h>
#include <asm/iommu_table.h>
#include <asm/io_apic.h>
+#include <asm/irq_remapping.h>
#include "amd_iommu_proto.h"
#include "amd_iommu_types.h"
@@ -1897,7 +1898,48 @@ static int __init iommu_go_to_state(enum iommu_init_state state)
return ret;
}
+#ifdef CONFIG_IRQ_REMAP
+int __init amd_iommu_prepare(void)
+{
+ return iommu_go_to_state(IOMMU_ACPI_FINISHED);
+}
+
+int __init amd_iommu_supported(void)
+{
+ return amd_iommu_irq_remap ? 1 : 0;
+}
+
+int __init amd_iommu_enable(void)
+{
+ int ret;
+
+ ret = iommu_go_to_state(IOMMU_ENABLED);
+ if (ret)
+ return ret;
+ irq_remapping_enabled = 1;
+
+ return 0;
+}
+
+void amd_iommu_disable(void)
+{
+ amd_iommu_suspend();
+}
+
+int amd_iommu_reenable(int mode)
+{
+ amd_iommu_resume();
+
+ return 0;
+}
+
+int __init amd_iommu_enable_faulting(void)
+{
+ /* We enable MSI later when PCI is initialized */
+ return 0;
+}
+#endif
/*
* This is the core init function for AMD IOMMU hardware in the system.