[Xen-changelog] [xen-unstable] iommu: Introduce iommu_flush and iommu_flush_all.

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Jean Guyader <jean.guyader@xxxxxxxxxxxxx>
# Date 1321623656 0
# Node ID 9a1a71f7bef2ca58d045d8067b965fcdc7c76cb2
# Parent  aeb628c5af3fa0e21b04ca27508f742ffa2050e4
iommu: Introduce iommu_flush and iommu_flush_all.

Signed-off-by: Jean Guyader <jean.guyader@xxxxxxxxxxxxx>
Committed-by: Keir Fraser <keir@xxxxxxx>
---


diff -r aeb628c5af3f -r 9a1a71f7bef2 xen/drivers/passthrough/iommu.c
--- a/xen/drivers/passthrough/iommu.c   Fri Nov 18 13:40:19 2011 +0000
+++ b/xen/drivers/passthrough/iommu.c   Fri Nov 18 13:40:56 2011 +0000
@@ -301,6 +301,26 @@
     return hd->platform_ops->unmap_page(d, gfn);
 }
 
+void iommu_iotlb_flush(struct domain *d, unsigned long gfn, unsigned int 
page_count)
+{
+    struct hvm_iommu *hd = domain_hvm_iommu(d);
+
+    if ( !iommu_enabled || !hd->platform_ops || !hd->platform_ops->iotlb_flush 
)
+        return;
+
+    hd->platform_ops->iotlb_flush(d, gfn, page_count);
+}
+
+void iommu_iotlb_flush_all(struct domain *d)
+{
+    struct hvm_iommu *hd = domain_hvm_iommu(d);
+
+    if ( !iommu_enabled || !hd->platform_ops || 
!hd->platform_ops->iotlb_flush_all )
+        return;
+
+    hd->platform_ops->iotlb_flush_all(d);
+}
+
 /* caller should hold the pcidevs_lock */
 int deassign_device(struct domain *d, u16 seg, u8 bus, u8 devfn)
 {
diff -r aeb628c5af3f -r 9a1a71f7bef2 xen/drivers/passthrough/vtd/iommu.c
--- a/xen/drivers/passthrough/vtd/iommu.c       Fri Nov 18 13:40:19 2011 +0000
+++ b/xen/drivers/passthrough/vtd/iommu.c       Fri Nov 18 13:40:56 2011 +0000
@@ -622,6 +622,16 @@
     }
 }
 
+static void intel_iommu_iotlb_flush(struct domain *d, unsigned long gfn, 
unsigned int page_count)
+{
+    __intel_iommu_iotlb_flush(d, gfn, 1, page_count);
+}
+
+static void intel_iommu_iotlb_flush_all(struct domain *d)
+{
+    __intel_iommu_iotlb_flush(d, 0, 0, 0);
+}
+
 /* clear one page's page table */
 static void dma_pte_clear_one(struct domain *domain, u64 addr)
 {
@@ -2343,6 +2353,8 @@
     .resume = vtd_resume,
     .share_p2m = iommu_set_pgd,
     .crash_shutdown = vtd_crash_shutdown,
+    .iotlb_flush = intel_iommu_iotlb_flush,
+    .iotlb_flush_all = intel_iommu_iotlb_flush_all,
 };
 
 /*
diff -r aeb628c5af3f -r 9a1a71f7bef2 xen/include/xen/iommu.h
--- a/xen/include/xen/iommu.h   Fri Nov 18 13:40:19 2011 +0000
+++ b/xen/include/xen/iommu.h   Fri Nov 18 13:40:56 2011 +0000
@@ -143,6 +143,8 @@
     void (*resume)(void);
     void (*share_p2m)(struct domain *d);
     void (*crash_shutdown)(void);
+    void (*iotlb_flush)(struct domain *d, unsigned long gfn, unsigned int 
page_count);
+    void (*iotlb_flush_all)(struct domain *d);
 };
 
 void iommu_update_ire_from_apic(unsigned int apic, unsigned int reg, unsigned 
int value);
@@ -159,4 +161,7 @@
 
 int iommu_do_domctl(struct xen_domctl *, XEN_GUEST_HANDLE(xen_domctl_t));
 
+void iommu_iotlb_flush(struct domain *d, unsigned long gfn, unsigned int 
page_count);
+void iommu_iotlb_flush_all(struct domain *d);
+
 #endif /* _IOMMU_H_ */

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