diff options
| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-06-22 11:32:04 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2010-06-22 11:32:04 -0700 |
| commit | 0e789314f8c0b50bd19bf08dc5624b9604d60183 (patch) | |
| tree | 64b6b9655e944284937f5eeff643f0754f35d0af /arch/x86/kernel/amd_iommu_init.c | |
| parent | f5dec51172b81db226a23f309bc737ad021af35b (diff) | |
| parent | 7e27d6e778cd87b6f2415515d7127eba53fe5d02 (diff) | |
Merge commit 'v2.6.35-rc3' into for-linus
Diffstat (limited to 'arch/x86/kernel/amd_iommu_init.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index 3bacb4d0844..3cc63e2b8dd 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -287,8 +287,12 @@ static u8 * __init iommu_map_mmio_space(u64 address) { u8 *ret; - if (!request_mem_region(address, MMIO_REGION_LENGTH, "amd_iommu")) + if (!request_mem_region(address, MMIO_REGION_LENGTH, "amd_iommu")) { + pr_err("AMD-Vi: Can not reserve memory region %llx for mmio\n", + address); + pr_err("AMD-Vi: This is a BIOS bug. Please contact your hardware vendor\n"); return NULL; + } ret = ioremap_nocache(address, MMIO_REGION_LENGTH); if (ret != NULL) @@ -1314,7 +1318,7 @@ static int __init amd_iommu_init(void) ret = amd_iommu_init_dma_ops(); if (ret) - goto free; + goto free_disable; amd_iommu_init_api(); @@ -1332,9 +1336,10 @@ static int __init amd_iommu_init(void) out: return ret; -free: +free_disable: disable_iommus(); +free: amd_iommu_uninit_devices(); free_pages((unsigned long)amd_iommu_pd_alloc_bitmap, @@ -1353,6 +1358,15 @@ free: free_unity_maps(); +#ifdef CONFIG_GART_IOMMU + /* + * We failed to initialize the AMD IOMMU - try fallback to GART + * if possible. + */ + gart_iommu_init(); + +#endif + goto out; } |