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authorJoerg Roedel <joerg.roedel@amd.com>2011-04-06 11:07:21 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2011-04-06 11:44:15 +0200
commit94fe79e2f100bfcd8e7689cbf8838634779b80a2 (patch)
tree227a4502ab6f0dac202f5d584ac9814ab2b4f7c5 /arch/x86/kernel/amd_iommu.c
parentded467374a34eb80020c2213456b1d9ca946b88c (diff)
downloadop-kernel-dev-94fe79e2f100bfcd8e7689cbf8838634779b80a2.zip
op-kernel-dev-94fe79e2f100bfcd8e7689cbf8838634779b80a2.tar.gz
x86/amd-iommu: Move inv-dte command building to own function
This patch moves command building for the invalidate-dte command into its own function. 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.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index eebd504..4e5631a 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -390,6 +390,13 @@ static void build_completion_wait(struct iommu_cmd *cmd)
CMD_SET_TYPE(cmd, CMD_COMPL_WAIT);
}
+static void build_inv_dte(struct iommu_cmd *cmd, u16 devid)
+{
+ memset(cmd, 0, sizeof(*cmd));
+ cmd->data[0] = devid;
+ CMD_SET_TYPE(cmd, CMD_INV_DEV_ENTRY);
+}
+
/*
* Writes the command to the IOMMUs command buffer and informs the
* hardware about the new command. Must be called with iommu->lock held.
@@ -533,10 +540,7 @@ static int iommu_flush_device(struct device *dev)
devid = get_device_id(dev);
iommu = amd_iommu_rlookup_table[devid];
- /* Build command */
- memset(&cmd, 0, sizeof(cmd));
- CMD_SET_TYPE(&cmd, CMD_INV_DEV_ENTRY);
- cmd.data[0] = devid;
+ build_inv_dte(&cmd, devid);
return iommu_queue_command(iommu, &cmd);
}
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