diff options
| author | Anusha Srivatsa <anusha.srivatsa@intel.com> | 2021-04-27 09:54:16 +0100 |
|---|---|---|
| committer | Matthew Auld <matthew.auld@intel.com> | 2021-04-27 16:21:47 +0100 |
| commit | 4bc91dbde0da2f88b1f3660e8d17dacd2e929a62 (patch) | |
| tree | cf0d263e846842cdd9f4bd3761dcfa320292f89f /drivers/gpu/drm/i915/gem/i915_gem_lmem.c | |
| parent | a9cf6ab3e7e4fc9e3720efe15cad3f7ae2322141 (diff) | |
drm/i915/lmem: Bypass aperture when lmem is available
In the scenario where local memory is available, we have
rely on CPU access via lmem directly instead of aperture.
v2:
gmch is only relevant for much older hw, therefore we can drop the
has_aperture check since it should always be present on such platforms.
(Chris)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Chris P Wilson <chris.p.wilson@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: CQ Tang <cq.tang@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210427085417.120246-6-matthew.auld@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_lmem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_lmem.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c index 017db8f71130..f44bdd08f7cb 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c @@ -17,6 +17,21 @@ const struct drm_i915_gem_object_ops i915_gem_lmem_obj_ops = { .release = i915_gem_object_release_memory_region, }; +void __iomem * +i915_gem_object_lmem_io_map(struct drm_i915_gem_object *obj, + unsigned long n, + unsigned long size) +{ + resource_size_t offset; + + GEM_BUG_ON(!i915_gem_object_is_contiguous(obj)); + + offset = i915_gem_object_get_dma_address(obj, n); + offset -= obj->mm.region->region.start; + + return io_mapping_map_wc(&obj->mm.region->iomap, offset, size); +} + bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj) { struct intel_memory_region *mr = obj->mm.region; |