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x86/amd-iommu: Add support for invalidate_all command
This patch adds support for the invalidate_all command present in new versions of the AMD IOMMU. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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d99ddec3ee
commit
58fc7f1419
2 changed files with 23 additions and 2 deletions
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@ -127,6 +127,7 @@
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#define CMD_COMPL_WAIT 0x01
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#define CMD_INV_DEV_ENTRY 0x02
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#define CMD_INV_IOMMU_PAGES 0x03
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#define CMD_INV_ALL 0x08
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#define CMD_COMPL_WAIT_STORE_MASK 0x01
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#define CMD_COMPL_WAIT_INT_MASK 0x02
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@ -463,6 +463,12 @@ static void build_inv_iommu_pages(struct iommu_cmd *cmd, u64 address,
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cmd->data[2] |= CMD_INV_IOMMU_PAGES_PDE_MASK;
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}
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static void build_inv_all(struct iommu_cmd *cmd)
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{
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memset(cmd, 0, sizeof(*cmd));
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CMD_SET_TYPE(cmd, CMD_INV_ALL);
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}
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/*
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* Writes the command to the IOMMUs command buffer and informs the
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* hardware about the new command.
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@ -567,10 +573,24 @@ static void iommu_flush_tlb_all(struct amd_iommu *iommu)
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iommu_completion_wait(iommu);
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}
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static void iommu_flush_all(struct amd_iommu *iommu)
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{
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struct iommu_cmd cmd;
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build_inv_all(&cmd);
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iommu_queue_command(iommu, &cmd);
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iommu_completion_wait(iommu);
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}
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void iommu_flush_all_caches(struct amd_iommu *iommu)
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{
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iommu_flush_dte_all(iommu);
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iommu_flush_tlb_all(iommu);
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if (iommu_feature(iommu, FEATURE_IA)) {
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iommu_flush_all(iommu);
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} else {
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iommu_flush_dte_all(iommu);
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iommu_flush_tlb_all(iommu);
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}
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}
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/*
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