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AMD IOMMU: add iommu_flush_domain function

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Impact: add a function to flush a domain id on every IOMMU

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2008-12-02 21:01:12 +01:00
parent 9e919012e3
commit 43f4960983
1 changed files with 24 additions and 0 deletions
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24
arch/x86/kernel/amd_iommu.c
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@ -352,6 +352,30 @@ static void iommu_flush_tlb(struct amd_iommu *iommu, u16 domid)
iommu_queue_inv_iommu_pages(iommu, address, domid, 0, 1);
}
#ifdef CONFIG_IOMMU_API
/*
* This function is used to flush the IO/TLB for a given protection domain
* on every IOMMU in the system
*/
static void iommu_flush_domain(u16 domid)
{
unsigned long flags;
struct amd_iommu *iommu;
struct iommu_cmd cmd;
__iommu_build_inv_iommu_pages(&cmd, CMD_INV_IOMMU_ALL_PAGES_ADDRESS,
domid, 1, 1);
list_for_each_entry(iommu, &amd_iommu_list, list) {
spin_lock_irqsave(&iommu->lock, flags);
__iommu_queue_command(iommu, &cmd);
__iommu_completion_wait(iommu);
__iommu_wait_for_completion(iommu);
spin_unlock_irqrestore(&iommu->lock, flags);
}
}
#endif
/****************************************************************************
*
* The functions below are used the create the page table mappings for