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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-12-02 21:01:12 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-03 14:11:54 +0100 |
| commit | 43f4960983a309568a6c4375f081e63fb2ff24a3 (patch) | |
| tree | 44291b360182d0f2e6ca2fa8958476788fa0345d | |
| parent | 9e919012e33c481991e46aa4cb13d807cd47b798 (diff) | |
AMD IOMMU: add iommu_flush_domain function
Impact: add a function to flush a domain id on every IOMMU
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index b7b3067630c..2b6b8e050bd 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -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 |