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authorJoerg Roedel <joerg.roedel@amd.com>2009-11-23 19:08:46 +0100
committerJoerg Roedel <joerg.roedel@amd.com>2009-11-27 14:17:01 +0100
commit576175c2503ae9b0f930ee9a6a0abaf7ef8956ad (patch)
treefde988b91b94d41d848e780e64e22053dc74551f /arch/x86
parent680525e06ddccda8c51bdddf532cd5b7d950c411 (diff)
x86/amd-iommu: Make alloc_new_range aware of multiple IOMMUs
Since the assumption that an dma_ops domain is only bound to one IOMMU was given up we need to make alloc_new_range aware of it. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/amd_iommu.c27
1 files changed, 15 insertions, 12 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index da3f9d8ee39..687f617b95d 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -788,11 +788,11 @@ static u64 *fetch_pte(struct protection_domain *domain,
* aperture in case of dma_ops domain allocation or address allocation
* failure.
*/
-static int alloc_new_range(struct amd_iommu *iommu,
- struct dma_ops_domain *dma_dom,
+static int alloc_new_range(struct dma_ops_domain *dma_dom,
bool populate, gfp_t gfp)
{
int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT;
+ struct amd_iommu *iommu;
int i;
#ifdef CONFIG_IOMMU_STRESS
@@ -832,14 +832,17 @@ static int alloc_new_range(struct amd_iommu *iommu,
dma_dom->aperture_size += APERTURE_RANGE_SIZE;
/* Intialize the exclusion range if necessary */
- if (iommu->exclusion_start &&
- iommu->exclusion_start >= dma_dom->aperture[index]->offset &&
- iommu->exclusion_start < dma_dom->aperture_size) {
- unsigned long startpage = iommu->exclusion_start >> PAGE_SHIFT;
- int pages = iommu_num_pages(iommu->exclusion_start,
- iommu->exclusion_length,
- PAGE_SIZE);
- dma_ops_reserve_addresses(dma_dom, startpage, pages);
+ for_each_iommu(iommu) {
+ if (iommu->exclusion_start &&
+ iommu->exclusion_start >= dma_dom->aperture[index]->offset
+ && iommu->exclusion_start < dma_dom->aperture_size) {
+ unsigned long startpage;
+ int pages = iommu_num_pages(iommu->exclusion_start,
+ iommu->exclusion_length,
+ PAGE_SIZE);
+ startpage = iommu->exclusion_start >> PAGE_SHIFT;
+ dma_ops_reserve_addresses(dma_dom, startpage, pages);
+ }
}
/*
@@ -1143,7 +1146,7 @@ static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu)
add_domain_to_list(&dma_dom->domain);
- if (alloc_new_range(iommu, dma_dom, true, GFP_KERNEL))
+ if (alloc_new_range(dma_dom, true, GFP_KERNEL))
goto free_dma_dom;
/*
@@ -1686,7 +1689,7 @@ retry:
*/
dma_dom->next_address = dma_dom->aperture_size;
- if (alloc_new_range(iommu, dma_dom, false, GFP_ATOMIC))
+ if (alloc_new_range(dma_dom, false, GFP_ATOMIC))
goto out;
/*