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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-28 13:58:51 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-28 20:53:53 +0100 |
| commit | 98f29e8d908f2b9e3d966f6f7d63cd69b4aaf0a2 (patch) | |
| tree | 2ac622bebd0e7d0f4df5b68c274839150b003b02 /drivers/gpu/drm/i915/intel_lrc.c | |
| parent | 9b81d556b11fe58827dcd87bc5deaf8da2f716ae (diff) | |
| download | op-kernel-dev-98f29e8d908f2b9e3d966f6f7d63cd69b4aaf0a2.zip op-kernel-dev-98f29e8d908f2b9e3d966f6f7d63cd69b4aaf0a2.tar.gz | |
drm/i915: Record space required for breadcrumb emission
In the next patch, we will use deferred breadcrumb emission. That requires
reserving sufficient space in the ringbuffer to emit the breadcrumb, which
first requires us to know how large the breadcrumb is.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-28-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lrc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lrc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 57dba45..8229bae 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1590,6 +1590,8 @@ static int gen8_emit_breadcrumb(struct drm_i915_gem_request *request) return intel_logical_ring_advance(request); } +static const int gen8_emit_breadcrumb_sz = 6 + WA_TAIL_DWORDS; + static int gen8_emit_breadcrumb_render(struct drm_i915_gem_request *request) { struct intel_ring *ring = request->ring; @@ -1621,6 +1623,8 @@ static int gen8_emit_breadcrumb_render(struct drm_i915_gem_request *request) return intel_logical_ring_advance(request); } +static const int gen8_emit_breadcrumb_render_sz = 8 + WA_TAIL_DWORDS; + static int gen8_init_rcs_context(struct drm_i915_gem_request *req) { int ret; @@ -1695,6 +1699,7 @@ logical_ring_default_vfuncs(struct intel_engine_cs *engine) engine->reset_hw = reset_common_ring; engine->emit_flush = gen8_emit_flush; engine->emit_breadcrumb = gen8_emit_breadcrumb; + engine->emit_breadcrumb_sz = gen8_emit_breadcrumb_sz; engine->submit_request = execlists_submit_request; engine->irq_enable = gen8_logical_ring_enable_irq; @@ -1817,6 +1822,7 @@ int logical_render_ring_init(struct intel_engine_cs *engine) engine->init_context = gen8_init_rcs_context; engine->emit_flush = gen8_emit_flush_render; engine->emit_breadcrumb = gen8_emit_breadcrumb_render; + engine->emit_breadcrumb_sz = gen8_emit_breadcrumb_render_sz; ret = intel_engine_create_scratch(engine, 4096); if (ret) |
