mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-24 01:41:39 +00:00
Code Issues Releases Wiki Activity

x86/amd-iommu: Introduce iommu_flush_device() function

Browse source 
This patch adds a function to flush a DTE entry for a given
struct device and replaces iommu_queue_inv_dev_entry calls
with this function where appropriate.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2009-11-26 15:04:38 +01:00
parent 7f760ddd70
commit 3fa43655d8
1 changed files with 15 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
arch/x86/kernel/amd_iommu.c
View file

@ -494,6 +494,17 @@ static int iommu_queue_inv_dev_entry(struct amd_iommu *iommu, u16 devid)
return ret;
}
static int iommu_flush_device(struct device *dev)
{
struct amd_iommu *iommu;
u16 devid;
devid = get_device_id(dev);
iommu = amd_iommu_rlookup_table[devid];
return iommu_queue_inv_dev_entry(iommu, devid);
}
static void __iommu_build_inv_iommu_pages(struct iommu_cmd *cmd, u64 address,
u16 domid, int pde, int s)
{
@ -1382,7 +1393,7 @@ static void do_attach(struct device *dev, struct protection_domain *domain)
domain->dev_cnt += 1;
/* Flush the DTE entry */
iommu_queue_inv_dev_entry(iommu, devid);
iommu_flush_device(dev);
}
static void do_detach(struct device *dev)
@ -1405,7 +1416,7 @@ static void do_detach(struct device *dev)
clear_dte_entry(devid);
/* Flush the DTE entry */
iommu_queue_inv_dev_entry(iommu, devid);
iommu_flush_device(dev);
}
/*
@ -1610,7 +1621,7 @@ static int device_change_notifier(struct notifier_block *nb,
goto out;
}
iommu_queue_inv_dev_entry(iommu, devid);
iommu_flush_device(dev);
iommu_completion_wait(iommu);
out:
@ -2393,7 +2404,7 @@ static void amd_iommu_detach_device(struct iommu_domain *dom,
if (!iommu)
return;
iommu_queue_inv_dev_entry(iommu, devid);
iommu_flush_device(dev);
iommu_completion_wait(iommu);
}