From 919032ec7c758fd4d65f2a141d1e0a10152198c9 Mon Sep 17 00:00:00 2001 From: Abdiel Janulgue Date: Tue, 16 Jun 2015 13:39:40 +0300 Subject: [PATCH] drm/i915: Enable resource streamer bits on MI_BATCH_BUFFER_START Adds support for enabling the resource streamer on the legacy ringbuffer for HSW and GEN8. Reviewed-by: Chris Wilson Signed-off-by: Abdiel Janulgue Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_ringbuffer.c | 8 ++++++-- drivers/gpu/drm/i915/intel_ringbuffer.h | 1 + 3 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index ac8436f..b932e17 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -361,6 +361,7 @@ #define MI_BATCH_BUFFER_START MI_INSTR(0x31, 0) #define MI_BATCH_GTT (2<<6) /* aliased with (1<<7) on gen4 */ #define MI_BATCH_BUFFER_START_GEN8 MI_INSTR(0x31, 1) +#define MI_BATCH_RESOURCE_STREAMER (1<<10) #define MI_PREDICATE_SRC0 (0x2400) #define MI_PREDICATE_SRC1 (0x2408) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index e39c891..bddc903 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -2448,7 +2448,9 @@ gen8_ring_dispatch_execbuffer(struct drm_i915_gem_request *req, return ret; /* FIXME(BDW): Address space and security selectors. */ - intel_ring_emit(ring, MI_BATCH_BUFFER_START_GEN8 | (ppgtt<<8)); + intel_ring_emit(ring, MI_BATCH_BUFFER_START_GEN8 | (ppgtt<<8) | + (dispatch_flags & I915_DISPATCH_RS ? + MI_BATCH_RESOURCE_STREAMER : 0)); intel_ring_emit(ring, lower_32_bits(offset)); intel_ring_emit(ring, upper_32_bits(offset)); intel_ring_emit(ring, MI_NOOP); @@ -2472,7 +2474,9 @@ hsw_ring_dispatch_execbuffer(struct drm_i915_gem_request *req, intel_ring_emit(ring, MI_BATCH_BUFFER_START | (dispatch_flags & I915_DISPATCH_SECURE ? - 0 : MI_BATCH_PPGTT_HSW | MI_BATCH_NON_SECURE_HSW)); + 0 : MI_BATCH_PPGTT_HSW | MI_BATCH_NON_SECURE_HSW) | + (dispatch_flags & I915_DISPATCH_RS ? + MI_BATCH_RESOURCE_STREAMER : 0)); /* bit0-7 is the length on GEN6+ */ intel_ring_emit(ring, offset); intel_ring_advance(ring); diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 304cac4..0ea89ea 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -199,6 +199,7 @@ struct intel_engine_cs { unsigned dispatch_flags); #define I915_DISPATCH_SECURE 0x1 #define I915_DISPATCH_PINNED 0x2 +#define I915_DISPATCH_RS 0x4 void (*cleanup)(struct intel_engine_cs *ring); /* GEN8 signal/wait table - never trust comments! -- 2.7.4