diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_mm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_mm.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/i915_mm.c b/drivers/gpu/drm/i915/i915_mm.c index 666808cb3a32..7998bc74ab49 100644 --- a/drivers/gpu/drm/i915/i915_mm.c +++ b/drivers/gpu/drm/i915/i915_mm.c @@ -27,6 +27,7 @@ #include "i915_drv.h" +#include "i915_mm.h" struct remap_pfn { struct mm_struct *mm; @@ -37,17 +38,6 @@ struct remap_pfn { resource_size_t iobase; }; -static int remap_pfn(pte_t *pte, unsigned long addr, void *data) -{ - struct remap_pfn *r = data; - - /* Special PTE are not associated with any struct page */ - set_pte_at(r->mm, addr, pte, pte_mkspecial(pfn_pte(r->pfn, r->prot))); - r->pfn++; - - return 0; -} - #define use_dma(io) ((io) != -1) static inline unsigned long sgt_pfn(const struct remap_pfn *r) @@ -77,6 +67,20 @@ static int remap_sg(pte_t *pte, unsigned long addr, void *data) return 0; } +#define EXPECTED_FLAGS (VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP) + +#if IS_ENABLED(CONFIG_X86) +static int remap_pfn(pte_t *pte, unsigned long addr, void *data) +{ + struct remap_pfn *r = data; + + /* Special PTE are not associated with any struct page */ + set_pte_at(r->mm, addr, pte, pte_mkspecial(pfn_pte(r->pfn, r->prot))); + r->pfn++; + + return 0; +} + /** * remap_io_mapping - remap an IO mapping to userspace * @vma: user vma to map to @@ -94,7 +98,6 @@ int remap_io_mapping(struct vm_area_struct *vma, struct remap_pfn r; int err; -#define EXPECTED_FLAGS (VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP) GEM_BUG_ON((vma->vm_flags & EXPECTED_FLAGS) != EXPECTED_FLAGS); /* We rely on prevalidation of the io-mapping to skip track_pfn(). */ @@ -111,6 +114,7 @@ int remap_io_mapping(struct vm_area_struct *vma, return 0; } +#endif /** * remap_io_sg - remap an IO mapping to userspace |