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iommu/amd: Introduce amd_iommu_init_dma routine

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This function will initialize everthing necessary so that
devices can do DMA. This includes dma_ops and iommu_ops.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2012-06-12 16:51:12 +02:00
parent 62410eeb40
commit b9b1ce707d
1 changed files with 20 additions and 7 deletions
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27
drivers/iommu/amd_iommu_init.c
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@ -1627,8 +1627,6 @@ int __init amd_iommu_init_hardware(void)
enable_iommus();
amd_iommu_init_notifier();
register_syscore_ops(&amd_iommu_syscore_ops);
return ret;
@ -1669,6 +1667,25 @@ static bool detect_ivrs(void)
return true;
}
static int amd_iommu_init_dma(void)
{
int ret;
if (iommu_pass_through)
ret = amd_iommu_init_passthrough();
else
ret = amd_iommu_init_dma_ops();
if (ret)
return ret;
amd_iommu_init_api();
amd_iommu_init_notifier();
return 0;
}
/*
* This is the core init function for AMD IOMMU hardware in the system.
* This function is called from the generic x86 DMA layer initialization
@ -1690,11 +1707,7 @@ static int __init amd_iommu_init(void)
if (ret)
goto free;
if (iommu_pass_through)
ret = amd_iommu_init_passthrough();
else
ret = amd_iommu_init_dma_ops();
ret = amd_iommu_init_dma();
if (ret)
goto free;