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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@amd.com>
This commit is contained in:
Joerg Roedel 2009-05-05 15:48:10 +02:00
parent bfd1be1857
commit 7d7a110c61
2 changed files with 19 additions and 0 deletions
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1
arch/x86/include/asm/amd_iommu.h
View File

@ -28,6 +28,7 @@ extern int amd_iommu_init_dma_ops(void);
extern void amd_iommu_detect(void); extern void amd_iommu_detect(void);
extern irqreturn_t amd_iommu_int_handler(int irq, void *data); 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_domains(void);
extern void amd_iommu_flush_all_devices(void);
#else #else
static inline int amd_iommu_init(void) { return -ENODEV; } static inline int amd_iommu_init(void) { return -ENODEV; }
static inline void amd_iommu_detect(void) { } static inline void amd_iommu_detect(void) { }

18
arch/x86/kernel/amd_iommu.c
View File

@ -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 * The functions below are used the create the page table mappings for