[PATCH 2 of 6 V6] amd iommu: call guest_iommu_set_base from hvmloader

[Wei Wang <wei.wang2@amd.com>]

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From 8110e0a223488a1123fa805051905d8788610cf2 Mon Sep 17 00:00:00 2001
From: Wei Wang <wei.wang2@amd.com>
Date: Wed, 26 Sep 2012 11:44:19 +0200
Subject: [PATCH 2/6] amd iommu: call guest_iommu_set_base from hvmloader.

IOMMU MMIO base address is dynamically allocated by firmware.
This patch allows hvmloader to notify hypervisor where the
iommu mmio pages are.

Signed-off-by: Wei Wang <wei.wang2@amd.com>
---
 xen/arch/x86/hvm/hvm.c          |    4 ++++
 xen/include/public/hvm/params.h |    3 ++-
 2 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index d69e419..e5c1e32 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -66,6 +66,7 @@
 #include <asm/mem_event.h>
 #include <asm/mem_access.h>
 #include <public/mem_event.h>
+#include <asm/hvm/svm/amd-iommu-proto.h>
 
 bool_t __read_mostly hvm_enabled;
 
@@ -3834,6 +3835,9 @@ long do_hvm_op(unsigned long op, XEN_GUEST_HANDLE(void) arg)
             case HVM_PARAM_BUFIOREQ_EVTCHN:
                 rc = -EINVAL;
                 break;
+            case HVM_PARAM_IOMMU_BASE:
+                rc = guest_iommu_set_base(d, a.value);
+                break;
             }
 
             if ( rc == 0 ) 
diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h
index 6b05f61..aab6b7a 100644
--- a/xen/include/public/hvm/params.h
+++ b/xen/include/public/hvm/params.h
@@ -140,7 +140,8 @@
 #define HVM_PARAM_PAGING_RING_PFN   27
 #define HVM_PARAM_ACCESS_RING_PFN   28
 #define HVM_PARAM_SHARING_RING_PFN  29
+#define HVM_PARAM_IOMMU_BASE   30
 
-#define HVM_NR_PARAMS          30
+#define HVM_NR_PARAMS          31
 
 #endif /* __XEN_PUBLIC_HVM_PARAMS_H__ */
-- 
1.7.4



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