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authorJoerg Roedel <joerg.roedel@amd.com>2008-08-14 19:55:15 +0200
committerIngo Molnar <mingo@elte.hu>2008-08-15 13:56:46 +0200
commit519c31bacf78a969efa8d2e55ed8862848f28590 (patch)
treebbeb4cd9f810536beb3bb1c5e6a827fa35a37633 /include/asm-x86
parentb635acec48bcaa9183fcbf4e3955616b0d4119b5 (diff)
x86, AMD IOMMU: use status bit instead of memory write-back for completion wait
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86')
-rw-r--r--include/asm-x86/amd_iommu_types.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-x86/amd_iommu_types.h b/include/asm-x86/amd_iommu_types.h
index 22aa58ca199..32543229db7 100644
--- a/include/asm-x86/amd_iommu_types.h
+++ b/include/asm-x86/amd_iommu_types.h
@@ -69,6 +69,9 @@
#define MMIO_EVT_TAIL_OFFSET 0x2018
#define MMIO_STATUS_OFFSET 0x2020
+/* MMIO status bits */
+#define MMIO_STATUS_COM_WAIT_INT_MASK 0x04
+
/* feature control bits */
#define CONTROL_IOMMU_EN 0x00ULL
#define CONTROL_HT_TUN_EN 0x01ULL
@@ -89,6 +92,7 @@
#define CMD_INV_IOMMU_PAGES 0x03
#define CMD_COMPL_WAIT_STORE_MASK 0x01
+#define CMD_COMPL_WAIT_INT_MASK 0x02
#define CMD_INV_IOMMU_PAGES_SIZE_MASK 0x01
#define CMD_INV_IOMMU_PAGES_PDE_MASK 0x02