diff options
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_lrc.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 87eb3a688424..58cad2448184 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -1803,8 +1803,8 @@ static void reset_common_ring(struct intel_engine_cs *engine, struct i915_request *request) { struct intel_engine_execlists * const execlists = &engine->execlists; - struct intel_context *ce; unsigned long flags; + u32 *regs; GEM_TRACE("%s request global=%x, current=%d\n", engine->name, request ? request->global_seqno : 0, @@ -1854,14 +1854,24 @@ static void reset_common_ring(struct intel_engine_cs *engine, * future request will be after userspace has had the opportunity * to recreate its own state. */ - ce = &request->ctx->engine[engine->id]; - execlists_init_reg_state(ce->lrc_reg_state, - request->ctx, engine, ce->ring); + regs = request->ctx->engine[engine->id].lrc_reg_state; + if (engine->default_state) { + void *defaults; + + defaults = i915_gem_object_pin_map(engine->default_state, + I915_MAP_WB); + if (!IS_ERR(defaults)) { + memcpy(regs, /* skip restoring the vanilla PPHWSP */ + defaults + LRC_STATE_PN * PAGE_SIZE, + engine->context_size - PAGE_SIZE); + i915_gem_object_unpin_map(engine->default_state); + } + } + execlists_init_reg_state(regs, request->ctx, engine, request->ring); /* Move the RING_HEAD onto the breadcrumb, past the hanging batch */ - ce->lrc_reg_state[CTX_RING_BUFFER_START+1] = - i915_ggtt_offset(ce->ring->vma); - ce->lrc_reg_state[CTX_RING_HEAD+1] = request->postfix; + regs[CTX_RING_BUFFER_START + 1] = i915_ggtt_offset(request->ring->vma); + regs[CTX_RING_HEAD + 1] = request->postfix; request->ring->head = request->postfix; intel_ring_update_space(request->ring); |