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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-12-02 20:54:37 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-03 14:11:54 +0100 |
| commit | 237b6f33291394c337ae84e2d3782d5605803af2 (patch) | |
| tree | 774b6ad48b008c707ac9087eeac25a84b3472c8e /arch/x86/kernel/amd_iommu.c | |
| parent | AMD IOMMU: refactor completion wait handling into separate functions (diff) | |
| download | linux-237b6f33291394c337ae84e2d3782d5605803af2.tar.xz linux-237b6f33291394c337ae84e2d3782d5605803af2.zip | |
AMD IOMMU: move invalidation command building to a separate function
Impact: refactoring of iommu_queue_inv_iommu_pages
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 2280ef86651f..fee16fbf2f33 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -286,6 +286,21 @@ static int iommu_queue_inv_dev_entry(struct amd_iommu *iommu, u16 devid) return ret; } +static void __iommu_build_inv_iommu_pages(struct iommu_cmd *cmd, u64 address, + u16 domid, int pde, int s) +{ + memset(cmd, 0, sizeof(*cmd)); + address &= PAGE_MASK; + CMD_SET_TYPE(cmd, CMD_INV_IOMMU_PAGES); + cmd->data[1] |= domid; + cmd->data[2] = lower_32_bits(address); + cmd->data[3] = upper_32_bits(address); + if (s) /* size bit - we flush more than one 4kb page */ + cmd->data[2] |= CMD_INV_IOMMU_PAGES_SIZE_MASK; + if (pde) /* PDE bit - we wan't flush everything not only the PTEs */ + cmd->data[2] |= CMD_INV_IOMMU_PAGES_PDE_MASK; +} + /* * Generic command send function for invalidaing TLB entries */ @@ -295,16 +310,7 @@ static int iommu_queue_inv_iommu_pages(struct amd_iommu *iommu, struct iommu_cmd cmd; int ret; - memset(&cmd, 0, sizeof(cmd)); - address &= PAGE_MASK; - CMD_SET_TYPE(&cmd, CMD_INV_IOMMU_PAGES); - cmd.data[1] |= domid; - cmd.data[2] = lower_32_bits(address); - cmd.data[3] = upper_32_bits(address); - if (s) /* size bit - we flush more than one 4kb page */ - cmd.data[2] |= CMD_INV_IOMMU_PAGES_SIZE_MASK; - if (pde) /* PDE bit - we wan't flush everything not only the PTEs */ - cmd.data[2] |= CMD_INV_IOMMU_PAGES_PDE_MASK; + __iommu_build_inv_iommu_pages(&cmd, address, domid, pde, s); ret = iommu_queue_command(iommu, &cmd); |