From: Ben Widawsky Date: Mon, 18 Aug 2014 17:35:28 +0000 (-0700) Subject: drm/i915: Don't save/restore RS when not used X-Git-Tag: firefly_0821_release~176^2~3035^2~32^2~97 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e80f14b6d36e3e07111cf2ab084ef8dd5d015ce2;p=firefly-linux-kernel-4.4.55.git drm/i915: Don't save/restore RS when not used v2: fix conflict on rebase. Cc: Kenneth Graunke Signed-off-by: Ben Widawsky Signed-off-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index 0fdb357f8a5c..afe78fd0db29 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -458,6 +458,7 @@ mi_set_context(struct intel_engine_cs *ring, struct intel_context *new_context, u32 hw_flags) { + u32 flags = hw_flags | MI_MM_SPACE_GTT; int ret; /* w/a: If Flush TLB Invalidation Mode is enabled, driver must do a TLB @@ -471,6 +472,10 @@ mi_set_context(struct intel_engine_cs *ring, return ret; } + /* These flags are for resource streamer on HSW+ */ + if (!IS_HASWELL(ring->dev) && INTEL_INFO(ring->dev)->gen < 8) + flags |= (MI_SAVE_EXT_STATE_EN | MI_RESTORE_EXT_STATE_EN); + ret = intel_ring_begin(ring, 6); if (ret) return ret; @@ -484,10 +489,7 @@ mi_set_context(struct intel_engine_cs *ring, intel_ring_emit(ring, MI_NOOP); intel_ring_emit(ring, MI_SET_CONTEXT); intel_ring_emit(ring, i915_gem_obj_ggtt_offset(new_context->legacy_hw_ctx.rcs_state) | - MI_MM_SPACE_GTT | - MI_SAVE_EXT_STATE_EN | - MI_RESTORE_EXT_STATE_EN | - hw_flags); + flags); /* * w/a: MI_SET_CONTEXT must always be followed by MI_NOOP * WaMiSetContext_Hang:snb,ivb,vlv