diff options
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
-rw-r--r-- | drivers/iommu/amd_iommu.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 748eab063857..a14f8dc23462 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c | |||
@@ -28,6 +28,7 @@ | |||
28 | #include <linux/iommu.h> | 28 | #include <linux/iommu.h> |
29 | #include <linux/delay.h> | 29 | #include <linux/delay.h> |
30 | #include <linux/amd-iommu.h> | 30 | #include <linux/amd-iommu.h> |
31 | #include <asm/msidef.h> | ||
31 | #include <asm/proto.h> | 32 | #include <asm/proto.h> |
32 | #include <asm/iommu.h> | 33 | #include <asm/iommu.h> |
33 | #include <asm/gart.h> | 34 | #include <asm/gart.h> |
@@ -1202,7 +1203,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom, | |||
1202 | { | 1203 | { |
1203 | int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT; | 1204 | int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT; |
1204 | struct amd_iommu *iommu; | 1205 | struct amd_iommu *iommu; |
1205 | unsigned long i; | 1206 | unsigned long i, old_size; |
1206 | 1207 | ||
1207 | #ifdef CONFIG_IOMMU_STRESS | 1208 | #ifdef CONFIG_IOMMU_STRESS |
1208 | populate = false; | 1209 | populate = false; |
@@ -1238,8 +1239,21 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom, | |||
1238 | } | 1239 | } |
1239 | } | 1240 | } |
1240 | 1241 | ||
1242 | old_size = dma_dom->aperture_size; | ||
1241 | dma_dom->aperture_size += APERTURE_RANGE_SIZE; | 1243 | dma_dom->aperture_size += APERTURE_RANGE_SIZE; |
1242 | 1244 | ||
1245 | /* Reserve address range used for MSI messages */ | ||
1246 | if (old_size < MSI_ADDR_BASE_LO && | ||
1247 | dma_dom->aperture_size > MSI_ADDR_BASE_LO) { | ||
1248 | unsigned long spage; | ||
1249 | int pages; | ||
1250 | |||
1251 | pages = iommu_num_pages(MSI_ADDR_BASE_LO, 0x10000, PAGE_SIZE); | ||
1252 | spage = MSI_ADDR_BASE_LO >> PAGE_SHIFT; | ||
1253 | |||
1254 | dma_ops_reserve_addresses(dma_dom, spage, pages); | ||
1255 | } | ||
1256 | |||
1243 | /* Initialize the exclusion range if necessary */ | 1257 | /* Initialize the exclusion range if necessary */ |
1244 | for_each_iommu(iommu) { | 1258 | for_each_iommu(iommu) { |
1245 | if (iommu->exclusion_start && | 1259 | if (iommu->exclusion_start && |