diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-04-28 09:56:37 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-04-28 12:17:32 +0100 |
| commit | d8dab00de9b767eaa11496a0eedf4798fc225803 (patch) | |
| tree | f1972d8b618719c592f98e63636bdabe3f19e8cc /include/linux | |
| parent | da6ca0347d51d016ab55f58b50e959f830a03bdb (diff) | |
io-mapping: Specify mapping size for io_mapping_map_wc()
The ioremap() hidden behind the io_mapping_map_wc() convenience helper
can be used for remapping multiple pages. Extend the helper so that
future callers can use it for larger ranges.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Yishai Hadas <yishaih@mellanox.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: Luis R. Rodriguez <mcgrof@kernel.org>
Cc: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: netdev@vger.kernel.org
Cc: linux-rdma@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Luis R. Rodriguez <mcgrof@kernel.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1461833819-3991-3-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/io-mapping.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h index e399029b68c5..645ad06b5d52 100644 --- a/include/linux/io-mapping.h +++ b/include/linux/io-mapping.h @@ -100,14 +100,16 @@ io_mapping_unmap_atomic(void __iomem *vaddr) } static inline void __iomem * -io_mapping_map_wc(struct io_mapping *mapping, unsigned long offset) +io_mapping_map_wc(struct io_mapping *mapping, + unsigned long offset, + unsigned long size) { resource_size_t phys_addr; BUG_ON(offset >= mapping->size); phys_addr = mapping->base + offset; - return ioremap_wc(phys_addr, PAGE_SIZE); + return ioremap_wc(phys_addr, size); } static inline void @@ -155,7 +157,9 @@ io_mapping_unmap_atomic(void __iomem *vaddr) /* Non-atomic map/unmap */ static inline void __iomem * -io_mapping_map_wc(struct io_mapping *mapping, unsigned long offset) +io_mapping_map_wc(struct io_mapping *mapping, + unsigned long offset, + unsigned long size) { return ((char __force __iomem *) mapping) + offset; } |