From: Ankitprasad Sharma <ankitprasad.r.sharma@xxxxxxxxx> It is possible that when we want to map an object to the aperture, either we run out of aperture space or the size of the object is larger than the mappable aperture. In such cases we might not be able to map the whole object to the aperture. For cases as such, here we introduce insert_page() which allows us to map a single page in to the mappable aperture space (which has a higher probabilty of succeeding). This can be iterated over to access the whole object by using space as meagre as page size. Here we try to use insert_page() for pwrite_fast in case a nonblocking pin for the whole object fails, which helps us to iterate over the whole object and perform the pwrite without mapping the whole object to the mappable aperture. We also introduce i915_gem_object_get_dma_address() to perform fast sequential lookup of the dma address associated with any page within the object. Ankitprasad Sharma (1): drm/i915: Use insert_page for pwrite_fast Chris Wilson (2): drm/i915: Add support for mapping an object page by page drm/i915: Introduce i915_gem_object_get_dma_address() drivers/char/agp/intel-gtt.c | 9 ++++ drivers/gpu/drm/i915/i915_drv.h | 17 +++++++ drivers/gpu/drm/i915/i915_gem.c | 92 +++++++++++++++++++++++++++---------- drivers/gpu/drm/i915/i915_gem_gtt.c | 49 ++++++++++++++++++++ drivers/gpu/drm/i915/i915_gem_gtt.h | 5 ++ include/drm/intel-gtt.h | 3 ++ 6 files changed, 152 insertions(+), 23 deletions(-) -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
