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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-12 08:58:18 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-12 10:21:55 +0100 |
| commit | 6eebfe8a10a62139d681e2f1af1386252742278b (patch) | |
| tree | 910b40ca6b3eed5b7257d196ea9c53850006761c /drivers/gpu/drm/i915/i915_gem_gtt.h | |
| parent | 3e1f0a518d22c361d8e947e94a189ba0c9b3db7a (diff) | |
| download | linux-6eebfe8a10a62139d681e2f1af1386252742278b.tar.bz2 | |
drm/i915/gtt: Use shallow dma pages for scratch
We only use the dma pages for scratch, and so do not need to allocate
the extra storage for the shadow page directory.
v2: Refrain from reintroducing I915_PDES
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190712075818.20616-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.h | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h index 57a68ef4eda7..91d8b4c20c61 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.h +++ b/drivers/gpu/drm/i915/i915_gem_gtt.h @@ -240,9 +240,6 @@ struct i915_page_dma { }; }; -#define px_base(px) (&(px)->base) -#define px_dma(px) (px_base(px)->daddr) - struct i915_page_table { struct i915_page_dma base; atomic_t used; @@ -255,6 +252,20 @@ struct i915_page_directory { void *entry[512]; }; +#define __px_choose_expr(x, type, expr, other) \ + __builtin_choose_expr( \ + __builtin_types_compatible_p(typeof(x), type) || \ + __builtin_types_compatible_p(typeof(x), const type), \ + ({ type __x = (type)(x); expr; }), \ + other) + +#define px_base(px) \ + __px_choose_expr(px, struct i915_page_dma *, __x, \ + __px_choose_expr(px, struct i915_page_table *, &__x->base, \ + __px_choose_expr(px, struct i915_page_directory *, &__x->base, \ + (void)0))) +#define px_dma(px) (px_base(px)->daddr) + struct i915_vma_ops { /* Map an object into an address space with the given cache flags. */ int (*bind_vma)(struct i915_vma *vma, @@ -304,9 +315,9 @@ struct i915_address_space { u64 scratch_pte; int scratch_order; struct i915_page_dma scratch_page; - struct i915_page_table *scratch_pt; - struct i915_page_directory *scratch_pd; - struct i915_page_directory *scratch_pdp; /* GEN8+ & 48b PPGTT */ + struct i915_page_dma scratch_pt; + struct i915_page_dma scratch_pd; + struct i915_page_dma scratch_pdp; /* GEN8+ & 48b PPGTT */ /** * List of vma currently bound. |