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>
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index 25085dd..e0ea40f 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -79,7 +79,9 @@
/* 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 @@
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 @@
/* 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)
{
}