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From: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH 1/3] drm/i915: Enable resource streamer bits on MI_BATCH_BUFFER_START
Date: Mon,  8 Jun 2015 13:04:07 +0300	[thread overview]
Message-ID: <1433757849-3139-2-git-send-email-abdiel.janulgue@linux.intel.com> (raw)
In-Reply-To: <1433757849-3139-1-git-send-email-abdiel.janulgue@linux.intel.com>

Adds support for executing the resource streamer on BDW and HSW

v2: Add support for Execlists (Minu Mathai <minu.mathai@intel.com>)

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h         | 1 +
 drivers/gpu/drm/i915/intel_lrc.c        | 4 +++-
 drivers/gpu/drm/i915/intel_ringbuffer.c | 8 ++++++--
 drivers/gpu/drm/i915/intel_ringbuffer.h | 1 +
 4 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index b522eb6..238bb25 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -356,6 +356,7 @@
 #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_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index fcb074b..3b168f6 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -1172,7 +1172,9 @@ static int gen8_emit_bb_start(struct intel_ringbuffer *ringbuf,
 		return ret;
 
 	/* FIXME(BDW): Address space and security selectors. */
-	intel_logical_ring_emit(ringbuf, MI_BATCH_BUFFER_START_GEN8 | (ppgtt<<8));
+	intel_logical_ring_emit(ringbuf, MI_BATCH_BUFFER_START_GEN8 |
+				(ppgtt<<8) | (I915_DISPATCH_RS ?
+					      MI_BATCH_RESOURCE_STREAMER : 0));
 	intel_logical_ring_emit(ringbuf, lower_32_bits(offset));
 	intel_logical_ring_emit(ringbuf, upper_32_bits(offset));
 	intel_logical_ring_emit(ringbuf, MI_NOOP);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 441e250..715cb2a 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -2385,7 +2385,9 @@ gen8_ring_dispatch_execbuffer(struct intel_engine_cs *ring,
 		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);
@@ -2408,7 +2410,9 @@ hsw_ring_dispatch_execbuffer(struct intel_engine_cs *ring,
 	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 c761fe0..3521bc0 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -167,6 +167,7 @@ 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!
-- 
1.9.1

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  reply	other threads:[~2015-06-08 10:05 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-08 10:04 drm/i915/hsw/bdw: Enable resource streamer v3 Abdiel Janulgue
2015-06-08 10:04 ` Abdiel Janulgue [this message]
2015-06-08 16:10   ` [PATCH 1/3] drm/i915: Enable resource streamer bits on MI_BATCH_BUFFER_START Ville Syrjälä
2015-06-08 17:42     ` Abdiel Janulgue
2015-06-08 17:55       ` Chris Wilson
2015-06-09 11:48       ` Dave Gordon
2015-06-08 10:04 ` [PATCH 2/3] drm/i915: Enable Resource Streamer state save/restore Abdiel Janulgue
2015-06-08 10:04 ` [PATCH 3/3] drm/i915: Expose I915_EXEC_RESOURCE_STREAMER flag Abdiel Janulgue
2015-06-13 15:41   ` shuang.he
2015-06-08 15:40 ` drm/i915/hsw/bdw: Enable resource streamer v3 Abdiel Janulgue

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