Commit-ID: 7d7a110c6127b7fc683dc6d764555f2dbd22b054
Gitweb: http://git.kernel.org/tip/7d7a110c6127b7fc683dc6d764555f2dbd22b054
Author: Joerg Roedel <joerg.roedel@xxxxxxx>
AuthorDate: Tue, 5 May 2009 15:48:10 +0200
Committer: Joerg Roedel <joerg.roedel@xxxxxxx>
CommitDate: Thu, 28 May 2009 18:10:43 +0200
amd-iommu: add function to flush tlb for all devices
This function is required for suspend/resume support with AMD IOMMU
enabled.
Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
---
arch/x86/include/asm/amd_iommu.h | 1 +
arch/x86/kernel/amd_iommu.c | 18 ++++++++++++++++++
2 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/amd_iommu.h b/arch/x86/include/asm/amd_iommu.h
index 1750e1f..262e028 100644
--- a/arch/x86/include/asm/amd_iommu.h
+++ b/arch/x86/include/asm/amd_iommu.h
@@ -28,6 +28,7 @@ extern int amd_iommu_init_dma_ops(void);
extern void amd_iommu_detect(void);
extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
extern void amd_iommu_flush_all_domains(void);
+extern void amd_iommu_flush_all_devices(void);
#else
static inline int amd_iommu_init(void) { return -ENODEV; }
static inline void amd_iommu_detect(void) { }
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 826ad07..92b0e18 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -460,6 +460,24 @@ void amd_iommu_flush_all_domains(void)
}
}
+void amd_iommu_flush_all_devices(void)
+{
+ struct amd_iommu *iommu;
+ int i;
+
+ for (i = 0; i <= amd_iommu_last_bdf; ++i) {
+ if (amd_iommu_pd_table[i] == NULL)
+ continue;
+
+ iommu = amd_iommu_rlookup_table[i];
+ if (!iommu)
+ continue;
+
+ iommu_queue_inv_dev_entry(iommu, i);
+ iommu_completion_wait(iommu);
+ }
+}
+
/****************************************************************************
*
* The functions below are used the create the page table mappings for
--
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