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| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-04-11 11:13:24 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-04-12 09:21:58 +0200 |
| commit | 58fc7f1419560efa9c426b829c195050e0147d7f (patch) | |
| tree | c6afe7a1a82f9c059238809df6a1dd3c2ead3e22 | |
| parent | d99ddec3eee0be8a43b2c1ff624b9dfaaa26b959 (diff) | |
| download | kernel_samsung_crespo-58fc7f1419560efa9c426b829c195050e0147d7f.zip kernel_samsung_crespo-58fc7f1419560efa9c426b829c195050e0147d7f.tar.gz kernel_samsung_crespo-58fc7f1419560efa9c426b829c195050e0147d7f.tar.bz2 | |
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>
| -rw-r--r-- | arch/x86/include/asm/amd_iommu_types.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 24 |
2 files changed, 23 insertions, 2 deletions
diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index 5c24e46..df62d26 100644 --- a/arch/x86/include/asm/amd_iommu_types.h +++ b/arch/x86/include/asm/amd_iommu_types.h @@ -127,6 +127,7 @@ #define CMD_COMPL_WAIT 0x01 #define CMD_INV_DEV_ENTRY 0x02 #define CMD_INV_IOMMU_PAGES 0x03 +#define CMD_INV_ALL 0x08 #define CMD_COMPL_WAIT_STORE_MASK 0x01 #define CMD_COMPL_WAIT_INT_MASK 0x02 diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index bcf58ea..d6192bc 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -463,6 +463,12 @@ static void build_inv_iommu_pages(struct iommu_cmd *cmd, u64 address, cmd->data[2] |= CMD_INV_IOMMU_PAGES_PDE_MASK; } +static void build_inv_all(struct iommu_cmd *cmd) +{ + memset(cmd, 0, sizeof(*cmd)); + CMD_SET_TYPE(cmd, CMD_INV_ALL); +} + /* * Writes the command to the IOMMUs command buffer and informs the * hardware about the new command. @@ -567,10 +573,24 @@ static void iommu_flush_tlb_all(struct amd_iommu *iommu) iommu_completion_wait(iommu); } +static void iommu_flush_all(struct amd_iommu *iommu) +{ + struct iommu_cmd cmd; + + build_inv_all(&cmd); + + iommu_queue_command(iommu, &cmd); + iommu_completion_wait(iommu); +} + void iommu_flush_all_caches(struct amd_iommu *iommu) { - iommu_flush_dte_all(iommu); - iommu_flush_tlb_all(iommu); + if (iommu_feature(iommu, FEATURE_IA)) { + iommu_flush_all(iommu); + } else { + iommu_flush_dte_all(iommu); + iommu_flush_tlb_all(iommu); + } } /* |