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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-08-04 14:34:24 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-08-05 08:48:53 +1000 |
| commit | fca3ec01e0b40cab82cac7745e154b01969e6219 (patch) | |
| tree | 731d6cdc321c8c1f8b2c4e8f0fdb0df59b5abbc9 /include/linux/io-mapping.h | |
| parent | 430f70d59da643f1aa7c9cf3493423a76550b110 (diff) | |
| download | lwn-fca3ec01e0b40cab82cac7745e154b01969e6219.tar.gz lwn-fca3ec01e0b40cab82cac7745e154b01969e6219.zip | |
drm,io-mapping: Specify slot to use for atomic mappings
This is required should we ever attempt to use an io-mapping where
KM_USER0 is verboten, such as inside an IRQ context.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/linux/io-mapping.h')
| -rw-r--r-- | include/linux/io-mapping.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h index 25085ddd955f..e0ea40f6c515 100644 --- a/include/linux/io-mapping.h +++ b/include/linux/io-mapping.h @@ -79,7 +79,9 @@ io_mapping_free(struct io_mapping *mapping) /* Atomic map/unmap */ static inline void * -io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset) +io_mapping_map_atomic_wc(struct io_mapping *mapping, + unsigned long offset, + int slot) { resource_size_t phys_addr; unsigned long pfn; @@ -87,13 +89,13 @@ io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset) BUG_ON(offset >= mapping->size); phys_addr = mapping->base + offset; pfn = (unsigned long) (phys_addr >> PAGE_SHIFT); - return iomap_atomic_prot_pfn(pfn, KM_USER0, mapping->prot); + return iomap_atomic_prot_pfn(pfn, slot, mapping->prot); } static inline void -io_mapping_unmap_atomic(void *vaddr) +io_mapping_unmap_atomic(void *vaddr, int slot) { - iounmap_atomic(vaddr, KM_USER0); + iounmap_atomic(vaddr, slot); } static inline void * @@ -133,13 +135,15 @@ io_mapping_free(struct io_mapping *mapping) /* Atomic map/unmap */ static inline void * -io_mapping_map_atomic_wc(struct io_mapping *mapping, unsigned long offset) +io_mapping_map_atomic_wc(struct io_mapping *mapping, + unsigned long offset, + int slot) { return ((char *) mapping) + offset; } static inline void -io_mapping_unmap_atomic(void *vaddr) +io_mapping_unmap_atomic(void *vaddr, int slot) { } |