[v2] drm/i915: Name all intel_ringbuffer instances ring
diff mbox

Message ID 1458149143-3747-1-git-send-email-tvrtko.ursulin@linux.intel.com
State New
Headers show

Commit Message

Tvrtko Ursulin March 16, 2016, 5:25 p.m. UTC
From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

A mix of Coccinelle, sed and manual editing.

v2: Rename engine->buffer as well.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
--
Compile tested only!
---
 drivers/gpu/drm/i915/i915_debugfs.c        |  14 +-
 drivers/gpu/drm/i915/i915_drv.h            |   4 +-
 drivers/gpu/drm/i915/i915_gem.c            |  26 ++--
 drivers/gpu/drm/i915/i915_gpu_error.c      |   6 +-
 drivers/gpu/drm/i915/i915_guc_submission.c |   4 +-
 drivers/gpu/drm/i915/i915_irq.c            |  12 +-
 drivers/gpu/drm/i915/intel_lrc.c           | 239 +++++++++++++++--------------
 drivers/gpu/drm/i915/intel_lrc.h           |  14 +-
 drivers/gpu/drm/i915/intel_mocs.c          |  38 ++---
 drivers/gpu/drm/i915/intel_ringbuffer.c    | 193 +++++++++++------------
 drivers/gpu/drm/i915/intel_ringbuffer.h    |  33 ++--
 11 files changed, 295 insertions(+), 288 deletions(-)

Patch
diff mbox

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 1d8c3ef29318..177b74b21317 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1933,11 +1933,11 @@  static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 }
 
 static void describe_ctx_ringbuf(struct seq_file *m,
-				 struct intel_ringbuffer *ringbuf)
+				 struct intel_ringbuffer *ring)
 {
 	seq_printf(m, " (ringbuffer, space: %d, head: %u, tail: %u, last head: %d)",
-		   ringbuf->space, ringbuf->head, ringbuf->tail,
-		   ringbuf->last_retired_head);
+		   ring->space, ring->head, ring->tail,
+		   ring->last_retired_head);
 }
 
 static int i915_context_status(struct seq_file *m, void *unused)
@@ -1968,14 +1968,14 @@  static int i915_context_status(struct seq_file *m, void *unused)
 			for_each_engine(engine, dev_priv, i) {
 				struct drm_i915_gem_object *ctx_obj =
 					ctx->engine[i].state;
-				struct intel_ringbuffer *ringbuf =
-					ctx->engine[i].ringbuf;
+				struct intel_ringbuffer *ring =
+					ctx->engine[i].ring;
 
 				seq_printf(m, "%s: ", engine->name);
 				if (ctx_obj)
 					describe_obj(m, ctx_obj);
-				if (ringbuf)
-					describe_ctx_ringbuf(m, ringbuf);
+				if (ring)
+					describe_ctx_ringbuf(m, ring);
 				seq_putc(m, '\n');
 			}
 		} else {
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index fd1ed66dd298..2dc08068bdfc 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -819,7 +819,7 @@  struct intel_context {
 	/* Execlists */
 	struct {
 		struct drm_i915_gem_object *state;
-		struct intel_ringbuffer *ringbuf;
+		struct intel_ringbuffer *ring;
 		int pin_count;
 		struct i915_vma *lrc_vma;
 		u64 lrc_desc;
@@ -2222,7 +2222,7 @@  struct drm_i915_gem_request {
 	 * context.
 	 */
 	struct intel_context *ctx;
-	struct intel_ringbuffer *ringbuf;
+	struct intel_ringbuffer *ring;
 
 	/** Batch buffer related to this request if any (used for
 	    error state dump only) */
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 042cb412e652..32236c6d21d0 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1421,7 +1421,7 @@  static void i915_gem_request_retire(struct drm_i915_gem_request *request)
 	 * Note this requires that we are always called in request
 	 * completion order.
 	 */
-	request->ringbuf->last_retired_head = request->postfix;
+	request->ring->last_retired_head = request->postfix;
 
 	list_del_init(&request->list);
 	i915_gem_request_remove_from_client(request);
@@ -2542,7 +2542,7 @@  void __i915_add_request(struct drm_i915_gem_request *request,
 {
 	struct intel_engine_cs *engine;
 	struct drm_i915_private *dev_priv;
-	struct intel_ringbuffer *ringbuf;
+	struct intel_ringbuffer *ring;
 	u32 request_start;
 	int ret;
 
@@ -2551,16 +2551,16 @@  void __i915_add_request(struct drm_i915_gem_request *request,
 
 	engine = request->engine;
 	dev_priv = request->i915;
-	ringbuf = request->ringbuf;
+	ring = request->ring;
 
 	/*
 	 * To ensure that this call will not fail, space for its emissions
 	 * should already have been reserved in the ring buffer. Let the ring
 	 * know that it is time to use that space up.
 	 */
-	intel_ring_reserved_space_use(ringbuf);
+	intel_ring_reserved_space_use(ring);
 
-	request_start = intel_ring_get_tail(ringbuf);
+	request_start = intel_ring_get_tail(ring);
 	/*
 	 * Emit any outstanding flushes - execbuf can fail to emit the flush
 	 * after having emitted the batchbuffer command. Hence we need to fix
@@ -2582,14 +2582,14 @@  void __i915_add_request(struct drm_i915_gem_request *request,
 	 * GPU processing the request, we never over-estimate the
 	 * position of the head.
 	 */
-	request->postfix = intel_ring_get_tail(ringbuf);
+	request->postfix = intel_ring_get_tail(ring);
 
 	if (i915.enable_execlists)
 		ret = engine->emit_request(request);
 	else {
 		ret = engine->add_request(request);
 
-		request->tail = intel_ring_get_tail(ringbuf);
+		request->tail = intel_ring_get_tail(ring);
 	}
 	/* Not allowed to fail! */
 	WARN(ret, "emit|add_request failed: %d!\n", ret);
@@ -2619,7 +2619,7 @@  void __i915_add_request(struct drm_i915_gem_request *request,
 	intel_mark_busy(dev_priv->dev);
 
 	/* Sanity check that the reserved size was large enough. */
-	intel_ring_reserved_space_end(ringbuf);
+	intel_ring_reserved_space_end(ring);
 }
 
 static bool i915_context_is_banned(struct drm_i915_private *dev_priv,
@@ -2779,7 +2779,7 @@  i915_gem_request_alloc(struct intel_engine_cs *engine,
 
 void i915_gem_request_cancel(struct drm_i915_gem_request *req)
 {
-	intel_ring_reserved_space_cancel(req->ringbuf);
+	intel_ring_reserved_space_cancel(req->ring);
 
 	i915_gem_request_unreference(req);
 }
@@ -2821,7 +2821,7 @@  static void i915_gem_reset_engine_status(struct drm_i915_private *dev_priv,
 static void i915_gem_reset_engine_cleanup(struct drm_i915_private *dev_priv,
 					struct intel_engine_cs *engine)
 {
-	struct intel_ringbuffer *buffer;
+	struct intel_ringbuffer *ring;
 
 	while (!list_empty(&engine->active_list)) {
 		struct drm_i915_gem_object *obj;
@@ -2874,9 +2874,9 @@  static void i915_gem_reset_engine_cleanup(struct drm_i915_private *dev_priv,
 	 * upon reset is less than when we start. Do one more pass over
 	 * all the ringbuffers to reset last_retired_head.
 	 */
-	list_for_each_entry(buffer, &engine->buffers, link) {
-		buffer->last_retired_head = buffer->tail;
-		intel_ring_update_space(buffer);
+	list_for_each_entry(ring, &engine->buffers, link) {
+		ring->last_retired_head = ring->tail;
+		intel_ring_update_space(ring);
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 34397a67b09e..e79f6739e7b0 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1074,11 +1074,11 @@  static void i915_gem_record_rings(struct drm_device *dev,
 			 * executed).
 			 */
 			if (request)
-				rbuf = request->ctx->engine[engine->id].ringbuf;
+				rbuf = request->ctx->engine[engine->id].ring;
 			else
-				rbuf = dev_priv->kernel_context->engine[engine->id].ringbuf;
+				rbuf = dev_priv->kernel_context->engine[engine->id].ring;
 		} else
-			rbuf = engine->buffer;
+			rbuf = engine->ring;
 
 		error->ring[i].cpu_ring_head = rbuf->head;
 		error->ring[i].cpu_ring_tail = rbuf->tail;
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index ae1f58d073f2..34225b57bac2 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -415,7 +415,7 @@  static void guc_init_ctx_desc(struct intel_guc *guc,
 		lrc->context_id = (client->ctx_index << GUC_ELC_CTXID_OFFSET) |
 				(engine->guc_id << GUC_ELC_ENGINE_OFFSET);
 
-		obj = ctx->engine[i].ringbuf->obj;
+		obj = ctx->engine[i].ring->obj;
 
 		lrc->ring_begin = i915_gem_obj_ggtt_offset(obj);
 		lrc->ring_end = lrc->ring_begin + obj->base.size - 1;
@@ -550,7 +550,7 @@  static int guc_add_workqueue_item(struct i915_guc_client *gc,
 							     rq->engine);
 
 	/* The GuC firmware wants the tail index in QWords, not bytes */
-	tail = rq->ringbuf->tail >> 3;
+	tail = rq->ring->tail >> 3;
 	wqi->ring_tail = tail << WQ_RING_TAIL_SHIFT;
 	wqi->fence_id = 0; /*XXX: what fence to be here */
 
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 0f61ae0ff609..6f7b05f10712 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -2882,7 +2882,7 @@  semaphore_waits_for(struct intel_engine_cs *engine, u32 *seqno)
 	 * Therefore, this function does not support execlist mode in its
 	 * current form. Just return NULL and move on.
 	 */
-	if (engine->buffer == NULL)
+	if (engine->ring == NULL)
 		return NULL;
 
 	ipehr = I915_READ(RING_IPEHR(engine->mmio_base));
@@ -2906,10 +2906,10 @@  semaphore_waits_for(struct intel_engine_cs *engine, u32 *seqno)
 		 * our ring is smaller than what the hardware (and hence
 		 * HEAD_ADDR) allows. Also handles wrap-around.
 		 */
-		head &= engine->buffer->size - 1;
+		head &= engine->ring->size - 1;
 
 		/* This here seems to blow up */
-		cmd = ioread32(engine->buffer->virtual_start + head);
+		cmd = ioread32(engine->ring->virtual_start + head);
 		if (cmd == ipehr)
 			break;
 
@@ -2919,11 +2919,11 @@  semaphore_waits_for(struct intel_engine_cs *engine, u32 *seqno)
 	if (!i)
 		return NULL;
 
-	*seqno = ioread32(engine->buffer->virtual_start + head + 4) + 1;
+	*seqno = ioread32(engine->ring->virtual_start + head + 4) + 1;
 	if (INTEL_INFO(engine->dev)->gen >= 8) {
-		offset = ioread32(engine->buffer->virtual_start + head + 12);
+		offset = ioread32(engine->ring->virtual_start + head + 12);
 		offset <<= 32;
-		offset = ioread32(engine->buffer->virtual_start + head + 8);
+		offset = ioread32(engine->ring->virtual_start + head + 8);
 	}
 	return semaphore_wait_to_signaller_ring(engine, ipehr, offset);
 }
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 7c636b3db156..4b673026e6ff 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -468,11 +468,11 @@  static void execlists_context_unqueue__locked(struct intel_engine_cs *engine)
 		 * resubmit the request. See gen8_emit_request() for where we
 		 * prepare the padding after the end of the request.
 		 */
-		struct intel_ringbuffer *ringbuf;
+		struct intel_ringbuffer *ring;
 
-		ringbuf = req0->ctx->engine[engine->id].ringbuf;
+		ring = req0->ctx->engine[engine->id].ring;
 		req0->tail += 8;
-		req0->tail &= ringbuf->size - 1;
+		req0->tail &= ring->size - 1;
 	}
 
 	execlists_submit_requests(req0, req1);
@@ -703,7 +703,7 @@  int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request
 {
 	int ret = 0;
 
-	request->ringbuf = request->ctx->engine[request->engine->id].ringbuf;
+	request->ring = request->ctx->engine[request->engine->id].ring;
 
 	if (i915.enable_guc_submission) {
 		/*
@@ -727,17 +727,17 @@  int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request
 static int logical_ring_wait_for_space(struct drm_i915_gem_request *req,
 				       int bytes)
 {
-	struct intel_ringbuffer *ringbuf = req->ringbuf;
+	struct intel_ringbuffer *ring = req->ring;
 	struct intel_engine_cs *engine = req->engine;
 	struct drm_i915_gem_request *target;
 	unsigned space;
 	int ret;
 
-	if (intel_ring_space(ringbuf) >= bytes)
+	if (intel_ring_space(ring) >= bytes)
 		return 0;
 
 	/* The whole point of reserving space is to not wait! */
-	WARN_ON(ringbuf->reserved_in_use);
+	WARN_ON(ring->reserved_in_use);
 
 	list_for_each_entry(target, &engine->request_list, list) {
 		/*
@@ -745,12 +745,12 @@  static int logical_ring_wait_for_space(struct drm_i915_gem_request *req,
 		 * from multiple ringbuffers. Here, we must ignore any that
 		 * aren't from the ringbuffer we're considering.
 		 */
-		if (target->ringbuf != ringbuf)
+		if (target->ring != ring)
 			continue;
 
 		/* Would completion of this request free enough space? */
-		space = __intel_ring_space(target->postfix, ringbuf->tail,
-					   ringbuf->size);
+		space = __intel_ring_space(target->postfix, ring->tail,
+					   ring->size);
 		if (space >= bytes)
 			break;
 	}
@@ -762,7 +762,7 @@  static int logical_ring_wait_for_space(struct drm_i915_gem_request *req,
 	if (ret)
 		return ret;
 
-	ringbuf->space = space;
+	ring->space = space;
 	return 0;
 }
 
@@ -778,12 +778,12 @@  static int logical_ring_wait_for_space(struct drm_i915_gem_request *req,
 static int
 intel_logical_ring_advance_and_submit(struct drm_i915_gem_request *request)
 {
-	struct intel_ringbuffer *ringbuf = request->ringbuf;
+	struct intel_ringbuffer *ring = request->ring;
 	struct drm_i915_private *dev_priv = request->i915;
 	struct intel_engine_cs *engine = request->engine;
 
-	intel_logical_ring_advance(ringbuf);
-	request->tail = ringbuf->tail;
+	intel_logical_ring_advance(ring);
+	request->tail = ring->tail;
 
 	/*
 	 * Here we add two extra NOOPs as padding to avoid
@@ -791,9 +791,9 @@  intel_logical_ring_advance_and_submit(struct drm_i915_gem_request *request)
 	 *
 	 * Caller must reserve WA_TAIL_DWORDS for us!
 	 */
-	intel_logical_ring_emit(ringbuf, MI_NOOP);
-	intel_logical_ring_emit(ringbuf, MI_NOOP);
-	intel_logical_ring_advance(ringbuf);
+	intel_logical_ring_emit(ring, MI_NOOP);
+	intel_logical_ring_emit(ring, MI_NOOP);
+	intel_logical_ring_advance(ring);
 
 	if (intel_engine_stopped(engine))
 		return 0;
@@ -817,32 +817,32 @@  intel_logical_ring_advance_and_submit(struct drm_i915_gem_request *request)
 	return 0;
 }
 
-static void __wrap_ring_buffer(struct intel_ringbuffer *ringbuf)
+static void __wrap_ring_buffer(struct intel_ringbuffer *ring)
 {
 	uint32_t __iomem *virt;
-	int rem = ringbuf->size - ringbuf->tail;
+	int rem = ring->size - ring->tail;
 
-	virt = ringbuf->virtual_start + ringbuf->tail;
+	virt = ring->virtual_start + ring->tail;
 	rem /= 4;
 	while (rem--)
 		iowrite32(MI_NOOP, virt++);
 
-	ringbuf->tail = 0;
-	intel_ring_update_space(ringbuf);
+	ring->tail = 0;
+	intel_ring_update_space(ring);
 }
 
 static int logical_ring_prepare(struct drm_i915_gem_request *req, int bytes)
 {
-	struct intel_ringbuffer *ringbuf = req->ringbuf;
-	int remain_usable = ringbuf->effective_size - ringbuf->tail;
-	int remain_actual = ringbuf->size - ringbuf->tail;
+	struct intel_ringbuffer *ring = req->ring;
+	int remain_usable = ring->effective_size - ring->tail;
+	int remain_actual = ring->size - ring->tail;
 	int ret, total_bytes, wait_bytes = 0;
 	bool need_wrap = false;
 
-	if (ringbuf->reserved_in_use)
+	if (ring->reserved_in_use)
 		total_bytes = bytes;
 	else
-		total_bytes = bytes + ringbuf->reserved_size;
+		total_bytes = bytes + ring->reserved_size;
 
 	if (unlikely(bytes > remain_usable)) {
 		/*
@@ -858,9 +858,9 @@  static int logical_ring_prepare(struct drm_i915_gem_request *req, int bytes)
 			 * falls off the end. So only need to to wait for the
 			 * reserved size after flushing out the remainder.
 			 */
-			wait_bytes = remain_actual + ringbuf->reserved_size;
+			wait_bytes = remain_actual + ring->reserved_size;
 			need_wrap = true;
-		} else if (total_bytes > ringbuf->space) {
+		} else if (total_bytes > ring->space) {
 			/* No wrapping required, just waiting. */
 			wait_bytes = total_bytes;
 		}
@@ -872,7 +872,7 @@  static int logical_ring_prepare(struct drm_i915_gem_request *req, int bytes)
 			return ret;
 
 		if (need_wrap)
-			__wrap_ring_buffer(ringbuf);
+			__wrap_ring_buffer(ring);
 	}
 
 	return 0;
@@ -908,7 +908,7 @@  int intel_logical_ring_begin(struct drm_i915_gem_request *req, int num_dwords)
 	if (ret)
 		return ret;
 
-	req->ringbuf->space -= num_dwords * sizeof(uint32_t);
+	req->ring->space -= num_dwords * sizeof(uint32_t);
 	return 0;
 }
 
@@ -922,7 +922,8 @@  int intel_logical_ring_reserve_space(struct drm_i915_gem_request *request)
 	 * adding any commands to it then there might not actually be
 	 * sufficient room for the submission commands.
 	 */
-	intel_ring_reserved_space_reserve(request->ringbuf, MIN_SPACE_FOR_ADD_REQUEST);
+	intel_ring_reserved_space_reserve(request->ring,
+					  MIN_SPACE_FOR_ADD_REQUEST);
 
 	return intel_logical_ring_begin(request, 0);
 }
@@ -951,7 +952,7 @@  int intel_execlists_submission(struct i915_execbuffer_params *params,
 	struct drm_device       *dev = params->dev;
 	struct intel_engine_cs *engine = params->engine;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_ringbuffer *ringbuf = params->ctx->engine[engine->id].ringbuf;
+	struct intel_ringbuffer *ring = params->ctx->engine[engine->id].ring;
 	u64 exec_start;
 	int instp_mode;
 	u32 instp_mask;
@@ -998,11 +999,11 @@  int intel_execlists_submission(struct i915_execbuffer_params *params,
 		if (ret)
 			return ret;
 
-		intel_logical_ring_emit(ringbuf, MI_NOOP);
-		intel_logical_ring_emit(ringbuf, MI_LOAD_REGISTER_IMM(1));
-		intel_logical_ring_emit_reg(ringbuf, INSTPM);
-		intel_logical_ring_emit(ringbuf, instp_mask << 16 | instp_mode);
-		intel_logical_ring_advance(ringbuf);
+		intel_logical_ring_emit(ring, MI_NOOP);
+		intel_logical_ring_emit(ring, MI_LOAD_REGISTER_IMM(1));
+		intel_logical_ring_emit_reg(ring, INSTPM);
+		intel_logical_ring_emit(ring, instp_mask << 16 | instp_mode);
+		intel_logical_ring_advance(ring);
 
 		dev_priv->relative_constants_mode = instp_mode;
 	}
@@ -1093,7 +1094,7 @@  static int intel_lr_context_do_pin(struct intel_context *ctx,
 	struct drm_device *dev = engine->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct drm_i915_gem_object *ctx_obj = ctx->engine[engine->id].state;
-	struct intel_ringbuffer *ringbuf = ctx->engine[engine->id].ringbuf;
+	struct intel_ringbuffer *ring = ctx->engine[engine->id].ring;
 	struct page *lrc_state_page;
 	uint32_t *lrc_reg_state;
 	int ret;
@@ -1111,14 +1112,14 @@  static int intel_lr_context_do_pin(struct intel_context *ctx,
 		goto unpin_ctx_obj;
 	}
 
-	ret = intel_pin_and_map_ringbuffer_obj(engine->dev, ringbuf);
+	ret = intel_pin_and_map_ringbuffer_obj(engine->dev, ring);
 	if (ret)
 		goto unpin_ctx_obj;
 
 	ctx->engine[engine->id].lrc_vma = i915_gem_obj_to_ggtt(ctx_obj);
 	intel_lr_context_descriptor_update(ctx, engine);
 	lrc_reg_state = kmap(lrc_state_page);
-	lrc_reg_state[CTX_RING_BUFFER_START+1] = ringbuf->vma->node.start;
+	lrc_reg_state[CTX_RING_BUFFER_START+1] = ring->vma->node.start;
 	ctx->engine[engine->id].lrc_reg_state = lrc_reg_state;
 	ctx_obj->dirty = true;
 
@@ -1161,7 +1162,7 @@  void intel_lr_context_unpin(struct intel_context *ctx,
 	WARN_ON(!mutex_is_locked(&ctx->i915->dev->struct_mutex));
 	if (--ctx->engine[engine->id].pin_count == 0) {
 		kunmap(kmap_to_page(ctx->engine[engine->id].lrc_reg_state));
-		intel_unpin_ringbuffer_obj(ctx->engine[engine->id].ringbuf);
+		intel_unpin_ringbuffer_obj(ctx->engine[engine->id].ring);
 		i915_gem_object_ggtt_unpin(ctx_obj);
 		ctx->engine[engine->id].lrc_vma = NULL;
 		ctx->engine[engine->id].lrc_desc = 0;
@@ -1175,7 +1176,7 @@  static int intel_logical_ring_workarounds_emit(struct drm_i915_gem_request *req)
 {
 	int ret, i;
 	struct intel_engine_cs *engine = req->engine;
-	struct intel_ringbuffer *ringbuf = req->ringbuf;
+	struct intel_ringbuffer *ring = req->ring;
 	struct drm_device *dev = engine->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	struct i915_workarounds *w = &dev_priv->workarounds;
@@ -1192,14 +1193,14 @@  static int intel_logical_ring_workarounds_emit(struct drm_i915_gem_request *req)
 	if (ret)
 		return ret;
 
-	intel_logical_ring_emit(ringbuf, MI_LOAD_REGISTER_IMM(w->count));
+	intel_logical_ring_emit(ring, MI_LOAD_REGISTER_IMM(w->count));
 	for (i = 0; i < w->count; i++) {
-		intel_logical_ring_emit_reg(ringbuf, w->reg[i].addr);
-		intel_logical_ring_emit(ringbuf, w->reg[i].value);
+		intel_logical_ring_emit_reg(ring, w->reg[i].addr);
+		intel_logical_ring_emit(ring, w->reg[i].value);
 	}
-	intel_logical_ring_emit(ringbuf, MI_NOOP);
+	intel_logical_ring_emit(ring, MI_NOOP);
 
-	intel_logical_ring_advance(ringbuf);
+	intel_logical_ring_advance(ring);
 
 	engine->gpu_caches_dirty = true;
 	ret = logical_ring_flush_all_caches(req);
@@ -1648,7 +1649,7 @@  static int intel_logical_ring_emit_pdps(struct drm_i915_gem_request *req)
 {
 	struct i915_hw_ppgtt *ppgtt = req->ctx->ppgtt;
 	struct intel_engine_cs *engine = req->engine;
-	struct intel_ringbuffer *ringbuf = req->ringbuf;
+	struct intel_ringbuffer *ring = req->ring;
 	const int num_lri_cmds = GEN8_LEGACY_PDPES * 2;
 	int i, ret;
 
@@ -1656,20 +1657,20 @@  static int intel_logical_ring_emit_pdps(struct drm_i915_gem_request *req)
 	if (ret)
 		return ret;
 
-	intel_logical_ring_emit(ringbuf, MI_LOAD_REGISTER_IMM(num_lri_cmds));
+	intel_logical_ring_emit(ring, MI_LOAD_REGISTER_IMM(num_lri_cmds));
 	for (i = GEN8_LEGACY_PDPES - 1; i >= 0; i--) {
 		const dma_addr_t pd_daddr = i915_page_dir_dma_addr(ppgtt, i);
 
-		intel_logical_ring_emit_reg(ringbuf,
+		intel_logical_ring_emit_reg(ring,
 					    GEN8_RING_PDP_UDW(engine, i));
-		intel_logical_ring_emit(ringbuf, upper_32_bits(pd_daddr));
-		intel_logical_ring_emit_reg(ringbuf,
+		intel_logical_ring_emit(ring, upper_32_bits(pd_daddr));
+		intel_logical_ring_emit_reg(ring,
 					    GEN8_RING_PDP_LDW(engine, i));
-		intel_logical_ring_emit(ringbuf, lower_32_bits(pd_daddr));
+		intel_logical_ring_emit(ring, lower_32_bits(pd_daddr));
 	}
 
-	intel_logical_ring_emit(ringbuf, MI_NOOP);
-	intel_logical_ring_advance(ringbuf);
+	intel_logical_ring_emit(ring, MI_NOOP);
+	intel_logical_ring_advance(ring);
 
 	return 0;
 }
@@ -1677,7 +1678,7 @@  static int intel_logical_ring_emit_pdps(struct drm_i915_gem_request *req)
 static int gen8_emit_bb_start(struct drm_i915_gem_request *req,
 			      u64 offset, unsigned dispatch_flags)
 {
-	struct intel_ringbuffer *ringbuf = req->ringbuf;
+	struct intel_ringbuffer *ring = req->ring;
 	bool ppgtt = !(dispatch_flags & I915_DISPATCH_SECURE);
 	int ret;
 
@@ -1704,14 +1705,14 @@  static int gen8_emit_bb_start(struct drm_i915_gem_request *req,
 		return ret;
 
 	/* FIXME(BDW): Address space and security selectors. */
-	intel_logical_ring_emit(ringbuf, MI_BATCH_BUFFER_START_GEN8 |
+	intel_logical_ring_emit(ring, MI_BATCH_BUFFER_START_GEN8 |
 				(ppgtt<<8) |
 				(dispatch_flags & 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);
-	intel_logical_ring_advance(ringbuf);
+	intel_logical_ring_emit(ring, lower_32_bits(offset));
+	intel_logical_ring_emit(ring, upper_32_bits(offset));
+	intel_logical_ring_emit(ring, MI_NOOP);
+	intel_logical_ring_advance(ring);
 
 	return 0;
 }
@@ -1754,8 +1755,8 @@  static int gen8_emit_flush(struct drm_i915_gem_request *request,
 			   u32 invalidate_domains,
 			   u32 unused)
 {
-	struct intel_ringbuffer *ringbuf = request->ringbuf;
-	struct intel_engine_cs *engine = ringbuf->engine;
+	struct intel_ringbuffer *ring = request->ring;
+	struct intel_engine_cs *engine = ring->engine;
 	struct drm_device *dev = engine->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	uint32_t cmd;
@@ -1780,13 +1781,13 @@  static int gen8_emit_flush(struct drm_i915_gem_request *request,
 			cmd |= MI_INVALIDATE_BSD;
 	}
 
-	intel_logical_ring_emit(ringbuf, cmd);
-	intel_logical_ring_emit(ringbuf,
+	intel_logical_ring_emit(ring, cmd);
+	intel_logical_ring_emit(ring,
 				I915_GEM_HWS_SCRATCH_ADDR |
 				MI_FLUSH_DW_USE_GTT);
-	intel_logical_ring_emit(ringbuf, 0); /* upper addr */
-	intel_logical_ring_emit(ringbuf, 0); /* value */
-	intel_logical_ring_advance(ringbuf);
+	intel_logical_ring_emit(ring, 0); /* upper addr */
+	intel_logical_ring_emit(ring, 0); /* value */
+	intel_logical_ring_advance(ring);
 
 	return 0;
 }
@@ -1795,8 +1796,8 @@  static int gen8_emit_flush_render(struct drm_i915_gem_request *request,
 				  u32 invalidate_domains,
 				  u32 flush_domains)
 {
-	struct intel_ringbuffer *ringbuf = request->ringbuf;
-	struct intel_engine_cs *engine = ringbuf->engine;
+	struct intel_ringbuffer *ring = request->ring;
+	struct intel_engine_cs *engine = ring->engine;
 	u32 scratch_addr = engine->scratch.gtt_offset + 2 * CACHELINE_BYTES;
 	bool vf_flush_wa = false;
 	u32 flags = 0;
@@ -1834,21 +1835,21 @@  static int gen8_emit_flush_render(struct drm_i915_gem_request *request,
 		return ret;
 
 	if (vf_flush_wa) {
-		intel_logical_ring_emit(ringbuf, GFX_OP_PIPE_CONTROL(6));
-		intel_logical_ring_emit(ringbuf, 0);
-		intel_logical_ring_emit(ringbuf, 0);
-		intel_logical_ring_emit(ringbuf, 0);
-		intel_logical_ring_emit(ringbuf, 0);
-		intel_logical_ring_emit(ringbuf, 0);
-	}
-
-	intel_logical_ring_emit(ringbuf, GFX_OP_PIPE_CONTROL(6));
-	intel_logical_ring_emit(ringbuf, flags);
-	intel_logical_ring_emit(ringbuf, scratch_addr);
-	intel_logical_ring_emit(ringbuf, 0);
-	intel_logical_ring_emit(ringbuf, 0);
-	intel_logical_ring_emit(ringbuf, 0);
-	intel_logical_ring_advance(ringbuf);
+		intel_logical_ring_emit(ring, GFX_OP_PIPE_CONTROL(6));
+		intel_logical_ring_emit(ring, 0);
+		intel_logical_ring_emit(ring, 0);
+		intel_logical_ring_emit(ring, 0);
+		intel_logical_ring_emit(ring, 0);
+		intel_logical_ring_emit(ring, 0);
+	}
+
+	intel_logical_ring_emit(ring, GFX_OP_PIPE_CONTROL(6));
+	intel_logical_ring_emit(ring, flags);
+	intel_logical_ring_emit(ring, scratch_addr);
+	intel_logical_ring_emit(ring, 0);
+	intel_logical_ring_emit(ring, 0);
+	intel_logical_ring_emit(ring, 0);
+	intel_logical_ring_advance(ring);
 
 	return 0;
 }
@@ -1906,7 +1907,7 @@  static inline u32 hws_seqno_address(struct intel_engine_cs *engine)
 
 static int gen8_emit_request(struct drm_i915_gem_request *request)
 {
-	struct intel_ringbuffer *ringbuf = request->ringbuf;
+	struct intel_ringbuffer *ring = request->ring;
 	int ret;
 
 	ret = intel_logical_ring_begin(request, 6 + WA_TAIL_DWORDS);
@@ -1916,21 +1917,21 @@  static int gen8_emit_request(struct drm_i915_gem_request *request)
 	/* w/a: bit 5 needs to be zero for MI_FLUSH_DW address. */
 	BUILD_BUG_ON(I915_GEM_HWS_INDEX_ADDR & (1 << 5));
 
-	intel_logical_ring_emit(ringbuf,
+	intel_logical_ring_emit(ring,
 				(MI_FLUSH_DW + 1) | MI_FLUSH_DW_OP_STOREDW);
-	intel_logical_ring_emit(ringbuf,
+	intel_logical_ring_emit(ring,
 				hws_seqno_address(request->engine) |
 				MI_FLUSH_DW_USE_GTT);
-	intel_logical_ring_emit(ringbuf, 0);
-	intel_logical_ring_emit(ringbuf, i915_gem_request_get_seqno(request));
-	intel_logical_ring_emit(ringbuf, MI_USER_INTERRUPT);
-	intel_logical_ring_emit(ringbuf, MI_NOOP);
+	intel_logical_ring_emit(ring, 0);
+	intel_logical_ring_emit(ring, i915_gem_request_get_seqno(request));
+	intel_logical_ring_emit(ring, MI_USER_INTERRUPT);
+	intel_logical_ring_emit(ring, MI_NOOP);
 	return intel_logical_ring_advance_and_submit(request);
 }
 
 static int gen8_emit_request_render(struct drm_i915_gem_request *request)
 {
-	struct intel_ringbuffer *ringbuf = request->ringbuf;
+	struct intel_ringbuffer *ring = request->ring;
 	int ret;
 
 	ret = intel_logical_ring_begin(request, 6 + WA_TAIL_DWORDS);
@@ -1941,15 +1942,15 @@  static int gen8_emit_request_render(struct drm_i915_gem_request *request)
 	 * need a prior CS_STALL, which is emitted by the flush
 	 * following the batch.
 	 */
-	intel_logical_ring_emit(ringbuf, GFX_OP_PIPE_CONTROL(5));
-	intel_logical_ring_emit(ringbuf,
+	intel_logical_ring_emit(ring, GFX_OP_PIPE_CONTROL(5));
+	intel_logical_ring_emit(ring,
 				(PIPE_CONTROL_GLOBAL_GTT_IVB |
 				 PIPE_CONTROL_CS_STALL |
 				 PIPE_CONTROL_QW_WRITE));
-	intel_logical_ring_emit(ringbuf, hws_seqno_address(request->engine));
-	intel_logical_ring_emit(ringbuf, 0);
-	intel_logical_ring_emit(ringbuf, i915_gem_request_get_seqno(request));
-	intel_logical_ring_emit(ringbuf, MI_USER_INTERRUPT);
+	intel_logical_ring_emit(ring, hws_seqno_address(request->engine));
+	intel_logical_ring_emit(ring, 0);
+	intel_logical_ring_emit(ring, i915_gem_request_get_seqno(request));
+	intel_logical_ring_emit(ring, MI_USER_INTERRUPT);
 	return intel_logical_ring_advance_and_submit(request);
 }
 
@@ -2017,7 +2018,7 @@  void intel_logical_ring_cleanup(struct intel_engine_cs *engine)
 
 	dev_priv = engine->dev->dev_private;
 
-	if (engine->buffer) {
+	if (engine->ring) {
 		intel_logical_ring_stop(engine);
 		WARN_ON((I915_READ_MODE(engine) & MODE_IDLE) == 0);
 	}
@@ -2075,7 +2076,7 @@  logical_ring_init(struct drm_device *dev, struct intel_engine_cs *engine)
 	int ret;
 
 	/* Intentionally left blank. */
-	engine->buffer = NULL;
+	engine->ring = NULL;
 
 	engine->dev = dev;
 	INIT_LIST_HEAD(&engine->active_list);
@@ -2359,7 +2360,7 @@  static u32 intel_lr_indirect_ctx_offset(struct intel_engine_cs *engine)
 static int
 populate_lr_context(struct intel_context *ctx, struct drm_i915_gem_object *ctx_obj,
 		    struct intel_engine_cs *engine,
-		    struct intel_ringbuffer *ringbuf)
+		    struct intel_ringbuffer *ring)
 {
 	struct drm_device *dev = engine->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -2414,7 +2415,7 @@  populate_lr_context(struct intel_context *ctx, struct drm_i915_gem_object *ctx_o
 		       RING_START(engine->mmio_base), 0);
 	ASSIGN_CTX_REG(reg_state, CTX_RING_BUFFER_CONTROL,
 		       RING_CTL(engine->mmio_base),
-		       ((ringbuf->size - PAGE_SIZE) & RING_NR_PAGES) | RING_VALID);
+		       ((ring->size - PAGE_SIZE) & RING_NR_PAGES) | RING_VALID);
 	ASSIGN_CTX_REG(reg_state, CTX_BB_HEAD_U,
 		       RING_BBADDR_UDW(engine->mmio_base), 0);
 	ASSIGN_CTX_REG(reg_state, CTX_BB_HEAD_L,
@@ -2512,19 +2513,19 @@  void intel_lr_context_free(struct intel_context *ctx)
 	int i;
 
 	for (i = I915_NUM_ENGINES; --i >= 0; ) {
-		struct intel_ringbuffer *ringbuf = ctx->engine[i].ringbuf;
+		struct intel_ringbuffer *ring = ctx->engine[i].ring;
 		struct drm_i915_gem_object *ctx_obj = ctx->engine[i].state;
 
 		if (!ctx_obj)
 			continue;
 
 		if (ctx == ctx->i915->kernel_context) {
-			intel_unpin_ringbuffer_obj(ringbuf);
+			intel_unpin_ringbuffer_obj(ring);
 			i915_gem_object_ggtt_unpin(ctx_obj);
 		}
 
 		WARN_ON(ctx->engine[i].pin_count);
-		intel_ringbuffer_free(ringbuf);
+		intel_ringbuffer_free(ring);
 		drm_gem_object_unreference(&ctx_obj->base);
 	}
 }
@@ -2605,7 +2606,7 @@  int intel_lr_context_deferred_alloc(struct intel_context *ctx,
 	struct drm_device *dev = engine->dev;
 	struct drm_i915_gem_object *ctx_obj;
 	uint32_t context_size;
-	struct intel_ringbuffer *ringbuf;
+	struct intel_ringbuffer *ring;
 	int ret;
 
 	WARN_ON(ctx->legacy_hw_ctx.rcs_state != NULL);
@@ -2622,19 +2623,19 @@  int intel_lr_context_deferred_alloc(struct intel_context *ctx,
 		return -ENOMEM;
 	}
 
-	ringbuf = intel_engine_create_ringbuffer(engine, 4 * PAGE_SIZE);
-	if (IS_ERR(ringbuf)) {
-		ret = PTR_ERR(ringbuf);
+	ring = intel_engine_create_ringbuffer(engine, 4 * PAGE_SIZE);
+	if (IS_ERR(ring)) {
+		ret = PTR_ERR(ring);
 		goto error_deref_obj;
 	}
 
-	ret = populate_lr_context(ctx, ctx_obj, engine, ringbuf);
+	ret = populate_lr_context(ctx, ctx_obj, engine, ring);
 	if (ret) {
 		DRM_DEBUG_DRIVER("Failed to populate LRC: %d\n", ret);
 		goto error_ringbuf;
 	}
 
-	ctx->engine[engine->id].ringbuf = ringbuf;
+	ctx->engine[engine->id].ring = ring;
 	ctx->engine[engine->id].state = ctx_obj;
 
 	if (ctx != ctx->i915->kernel_context && engine->init_context) {
@@ -2659,10 +2660,10 @@  int intel_lr_context_deferred_alloc(struct intel_context *ctx,
 	return 0;
 
 error_ringbuf:
-	intel_ringbuffer_free(ringbuf);
+	intel_ringbuffer_free(ring);
 error_deref_obj:
 	drm_gem_object_unreference(&ctx_obj->base);
-	ctx->engine[engine->id].ringbuf = NULL;
+	ctx->engine[engine->id].ring = NULL;
 	ctx->engine[engine->id].state = NULL;
 	return ret;
 }
@@ -2677,8 +2678,8 @@  void intel_lr_context_reset(struct drm_device *dev,
 	for_each_engine(engine, dev_priv, i) {
 		struct drm_i915_gem_object *ctx_obj =
 				ctx->engine[engine->id].state;
-		struct intel_ringbuffer *ringbuf =
-				ctx->engine[engine->id].ringbuf;
+		struct intel_ringbuffer *ring =
+				ctx->engine[engine->id].ring;
 		uint32_t *reg_state;
 		struct page *page;
 
@@ -2697,7 +2698,7 @@  void intel_lr_context_reset(struct drm_device *dev,
 
 		kunmap_atomic(reg_state);
 
-		ringbuf->head = 0;
-		ringbuf->tail = 0;
+		ring->head = 0;
+		ring->tail = 0;
 	}
 }
diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h
index a17cb12221ba..cb1a2db16cd1 100644
--- a/drivers/gpu/drm/i915/intel_lrc.h
+++ b/drivers/gpu/drm/i915/intel_lrc.h
@@ -69,25 +69,25 @@  int logical_ring_flush_all_caches(struct drm_i915_gem_request *req);
  *
  * The tail is only updated in our logical ringbuffer struct.
  */
-static inline void intel_logical_ring_advance(struct intel_ringbuffer *ringbuf)
+static inline void intel_logical_ring_advance(struct intel_ringbuffer *ring)
 {
-	ringbuf->tail &= ringbuf->size - 1;
+	ring->tail &= ring->size - 1;
 }
 /**
  * intel_logical_ring_emit() - write a DWORD to the ringbuffer.
  * @ringbuf: Ringbuffer to write to.
  * @data: DWORD to write.
  */
-static inline void intel_logical_ring_emit(struct intel_ringbuffer *ringbuf,
+static inline void intel_logical_ring_emit(struct intel_ringbuffer *ring,
 					   u32 data)
 {
-	iowrite32(data, ringbuf->virtual_start + ringbuf->tail);
-	ringbuf->tail += 4;
+	iowrite32(data, ring->virtual_start + ring->tail);
+	ring->tail += 4;
 }
-static inline void intel_logical_ring_emit_reg(struct intel_ringbuffer *ringbuf,
+static inline void intel_logical_ring_emit_reg(struct intel_ringbuffer *ring,
 					       i915_reg_t reg)
 {
-	intel_logical_ring_emit(ringbuf, i915_mmio_reg_offset(reg));
+	intel_logical_ring_emit(ring, i915_mmio_reg_offset(reg));
 }
 
 /* Logical Ring Contexts */
diff --git a/drivers/gpu/drm/i915/intel_mocs.c b/drivers/gpu/drm/i915/intel_mocs.c
index 3c725dde16ed..6e7e4ca0ec7f 100644
--- a/drivers/gpu/drm/i915/intel_mocs.c
+++ b/drivers/gpu/drm/i915/intel_mocs.c
@@ -191,9 +191,9 @@  static i915_reg_t mocs_register(enum intel_engine_id ring, int index)
  */
 static int emit_mocs_control_table(struct drm_i915_gem_request *req,
 				   const struct drm_i915_mocs_table *table,
-				   enum intel_engine_id ring)
+				   enum intel_engine_id engine_id)
 {
-	struct intel_ringbuffer *ringbuf = req->ringbuf;
+	struct intel_ringbuffer *ring = req->ring;
 	unsigned int index;
 	int ret;
 
@@ -206,12 +206,13 @@  static int emit_mocs_control_table(struct drm_i915_gem_request *req,
 		return ret;
 	}
 
-	intel_logical_ring_emit(ringbuf,
+	intel_logical_ring_emit(ring,
 				MI_LOAD_REGISTER_IMM(GEN9_NUM_MOCS_ENTRIES));
 
 	for (index = 0; index < table->size; index++) {
-		intel_logical_ring_emit_reg(ringbuf, mocs_register(ring, index));
-		intel_logical_ring_emit(ringbuf,
+		intel_logical_ring_emit_reg(ring,
+					    mocs_register(engine_id, index));
+		intel_logical_ring_emit(ring,
 					table->table[index].control_value);
 	}
 
@@ -224,12 +225,13 @@  static int emit_mocs_control_table(struct drm_i915_gem_request *req,
 	 * that value to all the used entries.
 	 */
 	for (; index < GEN9_NUM_MOCS_ENTRIES; index++) {
-		intel_logical_ring_emit_reg(ringbuf, mocs_register(ring, index));
-		intel_logical_ring_emit(ringbuf, table->table[0].control_value);
+		intel_logical_ring_emit_reg(ring,
+					    mocs_register(engine_id, index));
+		intel_logical_ring_emit(ring, table->table[0].control_value);
 	}
 
-	intel_logical_ring_emit(ringbuf, MI_NOOP);
-	intel_logical_ring_advance(ringbuf);
+	intel_logical_ring_emit(ring, MI_NOOP);
+	intel_logical_ring_advance(ring);
 
 	return 0;
 }
@@ -248,7 +250,7 @@  static int emit_mocs_control_table(struct drm_i915_gem_request *req,
 static int emit_mocs_l3cc_table(struct drm_i915_gem_request *req,
 				const struct drm_i915_mocs_table *table)
 {
-	struct intel_ringbuffer *ringbuf = req->ringbuf;
+	struct intel_ringbuffer *ring = req->ring;
 	unsigned int count;
 	unsigned int i;
 	u32 value;
@@ -265,15 +267,15 @@  static int emit_mocs_l3cc_table(struct drm_i915_gem_request *req,
 		return ret;
 	}
 
-	intel_logical_ring_emit(ringbuf,
-			MI_LOAD_REGISTER_IMM(GEN9_NUM_MOCS_ENTRIES / 2));
+	intel_logical_ring_emit(ring,
+				MI_LOAD_REGISTER_IMM(GEN9_NUM_MOCS_ENTRIES / 2));
 
 	for (i = 0, count = 0; i < table->size / 2; i++, count += 2) {
 		value = (table->table[count].l3cc_value & 0xffff) |
 			((table->table[count + 1].l3cc_value & 0xffff) << 16);
 
-		intel_logical_ring_emit_reg(ringbuf, GEN9_LNCFCMOCS(i));
-		intel_logical_ring_emit(ringbuf, value);
+		intel_logical_ring_emit_reg(ring, GEN9_LNCFCMOCS(i));
+		intel_logical_ring_emit(ring, value);
 	}
 
 	if (table->size & 0x01) {
@@ -289,14 +291,14 @@  static int emit_mocs_l3cc_table(struct drm_i915_gem_request *req,
 	 * they are reserved by the hardware.
 	 */
 	for (; i < GEN9_NUM_MOCS_ENTRIES / 2; i++) {
-		intel_logical_ring_emit_reg(ringbuf, GEN9_LNCFCMOCS(i));
-		intel_logical_ring_emit(ringbuf, value);
+		intel_logical_ring_emit_reg(ring, GEN9_LNCFCMOCS(i));
+		intel_logical_ring_emit(ring, value);
 
 		value = filler;
 	}
 
-	intel_logical_ring_emit(ringbuf, MI_NOOP);
-	intel_logical_ring_advance(ringbuf);
+	intel_logical_ring_emit(ring, MI_NOOP);
+	intel_logical_ring_advance(ring);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index b7c8fc1a73a3..3f4f386b62af 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -42,21 +42,21 @@  int __intel_ring_space(int head, int tail, int size)
 	return space - I915_RING_FREE_SPACE;
 }
 
-void intel_ring_update_space(struct intel_ringbuffer *ringbuf)
+void intel_ring_update_space(struct intel_ringbuffer *ring)
 {
-	if (ringbuf->last_retired_head != -1) {
-		ringbuf->head = ringbuf->last_retired_head;
-		ringbuf->last_retired_head = -1;
+	if (ring->last_retired_head != -1) {
+		ring->head = ring->last_retired_head;
+		ring->last_retired_head = -1;
 	}
 
-	ringbuf->space = __intel_ring_space(ringbuf->head & HEAD_ADDR,
-					    ringbuf->tail, ringbuf->size);
+	ring->space = __intel_ring_space(ring->head & HEAD_ADDR,
+					    ring->tail, ring->size);
 }
 
-int intel_ring_space(struct intel_ringbuffer *ringbuf)
+int intel_ring_space(struct intel_ringbuffer *ring)
 {
-	intel_ring_update_space(ringbuf);
-	return ringbuf->space;
+	intel_ring_update_space(ring);
+	return ring->space;
 }
 
 bool intel_engine_stopped(struct intel_engine_cs *engine)
@@ -67,11 +67,11 @@  bool intel_engine_stopped(struct intel_engine_cs *engine)
 
 static void __intel_ring_advance(struct intel_engine_cs *engine)
 {
-	struct intel_ringbuffer *ringbuf = engine->buffer;
-	ringbuf->tail &= ringbuf->size - 1;
+	struct intel_ringbuffer *ring = engine->ring;
+	ring->tail &= ring->size - 1;
 	if (intel_engine_stopped(engine))
 		return;
-	engine->write_tail(engine, ringbuf->tail);
+	engine->write_tail(engine, ring->tail);
 }
 
 static int
@@ -559,8 +559,8 @@  static int init_ring_common(struct intel_engine_cs *engine)
 {
 	struct drm_device *dev = engine->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	struct intel_ringbuffer *ringbuf = engine->buffer;
-	struct drm_i915_gem_object *obj = ringbuf->obj;
+	struct intel_ringbuffer *ring = engine->ring;
+	struct drm_i915_gem_object *obj = ring->obj;
 	int ret = 0;
 
 	intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
@@ -610,7 +610,7 @@  static int init_ring_common(struct intel_engine_cs *engine)
 	(void)I915_READ_HEAD(engine);
 
 	I915_WRITE_CTL(engine,
-			((ringbuf->size - PAGE_SIZE) & RING_NR_PAGES)
+			((ring->size - PAGE_SIZE) & RING_NR_PAGES)
 			| RING_VALID);
 
 	/* If the head is still not zero, the ring is dead */
@@ -629,10 +629,10 @@  static int init_ring_common(struct intel_engine_cs *engine)
 		goto out;
 	}
 
-	ringbuf->last_retired_head = -1;
-	ringbuf->head = I915_READ_HEAD(engine);
-	ringbuf->tail = I915_READ_TAIL(engine) & TAIL_ADDR;
-	intel_ring_update_space(ringbuf);
+	ring->last_retired_head = -1;
+	ring->head = I915_READ_HEAD(engine);
+	ring->tail = I915_READ_TAIL(engine) & TAIL_ADDR;
+	intel_ring_update_space(ring);
 
 	memset(&engine->hangcheck, 0, sizeof(engine->hangcheck));
 
@@ -2065,15 +2065,15 @@  static int init_phys_status_page(struct intel_engine_cs *engine)
 	return 0;
 }
 
-void intel_unpin_ringbuffer_obj(struct intel_ringbuffer *ringbuf)
+void intel_unpin_ringbuffer_obj(struct intel_ringbuffer *ring)
 {
-	if (HAS_LLC(ringbuf->obj->base.dev) && !ringbuf->obj->stolen)
-		vunmap(ringbuf->virtual_start);
+	if (HAS_LLC(ring->obj->base.dev) && !ring->obj->stolen)
+		vunmap(ring->virtual_start);
 	else
-		iounmap(ringbuf->virtual_start);
-	ringbuf->virtual_start = NULL;
-	ringbuf->vma = NULL;
-	i915_gem_object_ggtt_unpin(ringbuf->obj);
+		iounmap(ring->virtual_start);
+	ring->virtual_start = NULL;
+	ring->vma = NULL;
+	i915_gem_object_ggtt_unpin(ring->obj);
 }
 
 static u32 *vmap_obj(struct drm_i915_gem_object *obj)
@@ -2098,10 +2098,10 @@  static u32 *vmap_obj(struct drm_i915_gem_object *obj)
 }
 
 int intel_pin_and_map_ringbuffer_obj(struct drm_device *dev,
-				     struct intel_ringbuffer *ringbuf)
+				     struct intel_ringbuffer *ring)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct drm_i915_gem_object *obj = ringbuf->obj;
+	struct drm_i915_gem_object *obj = ring->obj;
 	int ret;
 
 	if (HAS_LLC(dev_priv) && !obj->stolen) {
@@ -2115,8 +2115,8 @@  int intel_pin_and_map_ringbuffer_obj(struct drm_device *dev,
 			return ret;
 		}
 
-		ringbuf->virtual_start = vmap_obj(obj);
-		if (ringbuf->virtual_start == NULL) {
+		ring->virtual_start = vmap_obj(obj);
+		if (ring->virtual_start == NULL) {
 			i915_gem_object_ggtt_unpin(obj);
 			return -ENOMEM;
 		}
@@ -2134,42 +2134,43 @@  int intel_pin_and_map_ringbuffer_obj(struct drm_device *dev,
 		/* Access through the GTT requires the device to be awake. */
 		assert_rpm_wakelock_held(dev_priv);
 
-		ringbuf->virtual_start = ioremap_wc(dev_priv->gtt.mappable_base +
-						    i915_gem_obj_ggtt_offset(obj), ringbuf->size);
-		if (ringbuf->virtual_start == NULL) {
+		ring->virtual_start = ioremap_wc(dev_priv->gtt.mappable_base +
+						    i915_gem_obj_ggtt_offset(obj),
+						    ring->size);
+		if (ring->virtual_start == NULL) {
 			i915_gem_object_ggtt_unpin(obj);
 			return -EINVAL;
 		}
 	}
 
-	ringbuf->vma = i915_gem_obj_to_ggtt(obj);
+	ring->vma = i915_gem_obj_to_ggtt(obj);
 
 	return 0;
 }
 
-static void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf)
+static void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ring)
 {
-	drm_gem_object_unreference(&ringbuf->obj->base);
-	ringbuf->obj = NULL;
+	drm_gem_object_unreference(&ring->obj->base);
+	ring->obj = NULL;
 }
 
 static int intel_alloc_ringbuffer_obj(struct drm_device *dev,
-				      struct intel_ringbuffer *ringbuf)
+				      struct intel_ringbuffer *ring)
 {
 	struct drm_i915_gem_object *obj;
 
 	obj = NULL;
 	if (!HAS_LLC(dev))
-		obj = i915_gem_object_create_stolen(dev, ringbuf->size);
+		obj = i915_gem_object_create_stolen(dev, ring->size);
 	if (obj == NULL)
-		obj = i915_gem_alloc_object(dev, ringbuf->size);
+		obj = i915_gem_alloc_object(dev, ring->size);
 	if (obj == NULL)
 		return -ENOMEM;
 
 	/* mark ring buffers as read-only from GPU side by default */
 	obj->gt_ro = 1;
 
-	ringbuf->obj = obj;
+	ring->obj = obj;
 
 	return 0;
 }
@@ -2225,10 +2226,10 @@  intel_ringbuffer_free(struct intel_ringbuffer *ring)
 static int intel_init_ring_buffer(struct drm_device *dev,
 				  struct intel_engine_cs *engine)
 {
-	struct intel_ringbuffer *ringbuf;
+	struct intel_ringbuffer *ring;
 	int ret;
 
-	WARN_ON(engine->buffer);
+	WARN_ON(engine->ring);
 
 	engine->dev = dev;
 	INIT_LIST_HEAD(&engine->active_list);
@@ -2241,12 +2242,12 @@  static int intel_init_ring_buffer(struct drm_device *dev,
 
 	init_waitqueue_head(&engine->irq_queue);
 
-	ringbuf = intel_engine_create_ringbuffer(engine, 32 * PAGE_SIZE);
-	if (IS_ERR(ringbuf)) {
-		ret = PTR_ERR(ringbuf);
+	ring = intel_engine_create_ringbuffer(engine, 32 * PAGE_SIZE);
+	if (IS_ERR(ring)) {
+		ret = PTR_ERR(ring);
 		goto error;
 	}
-	engine->buffer = ringbuf;
+	engine->ring = ring;
 
 	if (I915_NEED_GFX_HWS(dev)) {
 		ret = init_status_page(engine);
@@ -2259,11 +2260,11 @@  static int intel_init_ring_buffer(struct drm_device *dev,
 			goto error;
 	}
 
-	ret = intel_pin_and_map_ringbuffer_obj(dev, ringbuf);
+	ret = intel_pin_and_map_ringbuffer_obj(dev, ring);
 	if (ret) {
 		DRM_ERROR("Failed to pin and map ringbuffer %s: %d\n",
 				engine->name, ret);
-		intel_destroy_ringbuffer_obj(ringbuf);
+		intel_destroy_ringbuffer_obj(ring);
 		goto error;
 	}
 
@@ -2287,13 +2288,13 @@  void intel_cleanup_engine(struct intel_engine_cs *engine)
 
 	dev_priv = to_i915(engine->dev);
 
-	if (engine->buffer) {
+	if (engine->ring) {
 		intel_stop_engine(engine);
 		WARN_ON(!IS_GEN2(engine->dev) && (I915_READ_MODE(engine) & MODE_IDLE) == 0);
 
-		intel_unpin_ringbuffer_obj(engine->buffer);
-		intel_ringbuffer_free(engine->buffer);
-		engine->buffer = NULL;
+		intel_unpin_ringbuffer_obj(engine->ring);
+		intel_ringbuffer_free(engine->ring);
+		engine->ring = NULL;
 	}
 
 	if (engine->cleanup)
@@ -2313,20 +2314,20 @@  void intel_cleanup_engine(struct intel_engine_cs *engine)
 
 static int ring_wait_for_space(struct intel_engine_cs *engine, int n)
 {
-	struct intel_ringbuffer *ringbuf = engine->buffer;
+	struct intel_ringbuffer *ring = engine->ring;
 	struct drm_i915_gem_request *request;
 	unsigned space;
 	int ret;
 
-	if (intel_ring_space(ringbuf) >= n)
+	if (intel_ring_space(ring) >= n)
 		return 0;
 
 	/* The whole point of reserving space is to not wait! */
-	WARN_ON(ringbuf->reserved_in_use);
+	WARN_ON(ring->reserved_in_use);
 
 	list_for_each_entry(request, &engine->request_list, list) {
-		space = __intel_ring_space(request->postfix, ringbuf->tail,
-					   ringbuf->size);
+		space = __intel_ring_space(request->postfix, ring->tail,
+					   ring->size);
 		if (space >= n)
 			break;
 	}
@@ -2338,22 +2339,22 @@  static int ring_wait_for_space(struct intel_engine_cs *engine, int n)
 	if (ret)
 		return ret;
 
-	ringbuf->space = space;
+	ring->space = space;
 	return 0;
 }
 
-static void __wrap_ring_buffer(struct intel_ringbuffer *ringbuf)
+static void __wrap_ring_buffer(struct intel_ringbuffer *ring)
 {
 	uint32_t __iomem *virt;
-	int rem = ringbuf->size - ringbuf->tail;
+	int rem = ring->size - ring->tail;
 
-	virt = ringbuf->virtual_start + ringbuf->tail;
+	virt = ring->virtual_start + ring->tail;
 	rem /= 4;
 	while (rem--)
 		iowrite32(MI_NOOP, virt++);
 
-	ringbuf->tail = 0;
-	intel_ring_update_space(ringbuf);
+	ring->tail = 0;
+	intel_ring_update_space(ring);
 }
 
 int intel_engine_idle(struct intel_engine_cs *engine)
@@ -2377,7 +2378,7 @@  int intel_engine_idle(struct intel_engine_cs *engine)
 
 int intel_ring_alloc_request_extras(struct drm_i915_gem_request *request)
 {
-	request->ringbuf = request->engine->buffer;
+	request->ring = request->engine->ring;
 	return 0;
 }
 
@@ -2391,42 +2392,44 @@  int intel_ring_reserve_space(struct drm_i915_gem_request *request)
 	 * adding any commands to it then there might not actually be
 	 * sufficient room for the submission commands.
 	 */
-	intel_ring_reserved_space_reserve(request->ringbuf, MIN_SPACE_FOR_ADD_REQUEST);
+	intel_ring_reserved_space_reserve(request->ring,
+					  MIN_SPACE_FOR_ADD_REQUEST);
 
 	return intel_ring_begin(request, 0);
 }
 
-void intel_ring_reserved_space_reserve(struct intel_ringbuffer *ringbuf, int size)
+void intel_ring_reserved_space_reserve(struct intel_ringbuffer *ring,
+				       int size)
 {
-	WARN_ON(ringbuf->reserved_size);
-	WARN_ON(ringbuf->reserved_in_use);
+	WARN_ON(ring->reserved_size);
+	WARN_ON(ring->reserved_in_use);
 
-	ringbuf->reserved_size = size;
+	ring->reserved_size = size;
 }
 
-void intel_ring_reserved_space_cancel(struct intel_ringbuffer *ringbuf)
+void intel_ring_reserved_space_cancel(struct intel_ringbuffer *ring)
 {
-	WARN_ON(ringbuf->reserved_in_use);
+	WARN_ON(ring->reserved_in_use);
 
-	ringbuf->reserved_size   = 0;
-	ringbuf->reserved_in_use = false;
+	ring->reserved_size   = 0;
+	ring->reserved_in_use = false;
 }
 
-void intel_ring_reserved_space_use(struct intel_ringbuffer *ringbuf)
+void intel_ring_reserved_space_use(struct intel_ringbuffer *ring)
 {
-	WARN_ON(ringbuf->reserved_in_use);
+	WARN_ON(ring->reserved_in_use);
 
-	ringbuf->reserved_in_use = true;
-	ringbuf->reserved_tail   = ringbuf->tail;
+	ring->reserved_in_use = true;
+	ring->reserved_tail   = ring->tail;
 }
 
-void intel_ring_reserved_space_end(struct intel_ringbuffer *ringbuf)
+void intel_ring_reserved_space_end(struct intel_ringbuffer *ring)
 {
-	WARN_ON(!ringbuf->reserved_in_use);
-	if (ringbuf->tail > ringbuf->reserved_tail) {
-		WARN(ringbuf->tail > ringbuf->reserved_tail + ringbuf->reserved_size,
+	WARN_ON(!ring->reserved_in_use);
+	if (ring->tail > ring->reserved_tail) {
+		WARN(ring->tail > ring->reserved_tail + ring->reserved_size,
 		     "request reserved size too small: %d vs %d!\n",
-		     ringbuf->tail - ringbuf->reserved_tail, ringbuf->reserved_size);
+		     ring->tail - ring->reserved_tail, ring->reserved_size);
 	} else {
 		/*
 		 * The ring was wrapped while the reserved space was in use.
@@ -2439,22 +2442,22 @@  void intel_ring_reserved_space_end(struct intel_ringbuffer *ringbuf)
 		 */
 	}
 
-	ringbuf->reserved_size   = 0;
-	ringbuf->reserved_in_use = false;
+	ring->reserved_size   = 0;
+	ring->reserved_in_use = false;
 }
 
 static int __intel_ring_prepare(struct intel_engine_cs *engine, int bytes)
 {
-	struct intel_ringbuffer *ringbuf = engine->buffer;
-	int remain_usable = ringbuf->effective_size - ringbuf->tail;
-	int remain_actual = ringbuf->size - ringbuf->tail;
+	struct intel_ringbuffer *ring = engine->ring;
+	int remain_usable = ring->effective_size - ring->tail;
+	int remain_actual = ring->size - ring->tail;
 	int ret, total_bytes, wait_bytes = 0;
 	bool need_wrap = false;
 
-	if (ringbuf->reserved_in_use)
+	if (ring->reserved_in_use)
 		total_bytes = bytes;
 	else
-		total_bytes = bytes + ringbuf->reserved_size;
+		total_bytes = bytes + ring->reserved_size;
 
 	if (unlikely(bytes > remain_usable)) {
 		/*
@@ -2470,9 +2473,9 @@  static int __intel_ring_prepare(struct intel_engine_cs *engine, int bytes)
 			 * falls off the end. So only need to to wait for the
 			 * reserved size after flushing out the remainder.
 			 */
-			wait_bytes = remain_actual + ringbuf->reserved_size;
+			wait_bytes = remain_actual + ring->reserved_size;
 			need_wrap = true;
-		} else if (total_bytes > ringbuf->space) {
+		} else if (total_bytes > ring->space) {
 			/* No wrapping required, just waiting. */
 			wait_bytes = total_bytes;
 		}
@@ -2484,7 +2487,7 @@  static int __intel_ring_prepare(struct intel_engine_cs *engine, int bytes)
 			return ret;
 
 		if (need_wrap)
-			__wrap_ring_buffer(ringbuf);
+			__wrap_ring_buffer(ring);
 	}
 
 	return 0;
@@ -2510,7 +2513,7 @@  int intel_ring_begin(struct drm_i915_gem_request *req,
 	if (ret)
 		return ret;
 
-	engine->buffer->space -= num_dwords * sizeof(uint32_t);
+	engine->ring->space -= num_dwords * sizeof(uint32_t);
 	return 0;
 }
 
@@ -2518,7 +2521,7 @@  int intel_ring_begin(struct drm_i915_gem_request *req,
 int intel_ring_cacheline_align(struct drm_i915_gem_request *req)
 {
 	struct intel_engine_cs *engine = req->engine;
-	int num_dwords = (engine->buffer->tail & (CACHELINE_BYTES - 1)) / sizeof(uint32_t);
+	int num_dwords = (engine->ring->tail & (CACHELINE_BYTES - 1)) / sizeof(uint32_t);
 	int ret;
 
 	if (num_dwords == 0)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 3e40f7bf2147..ce7337b0aa14 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -159,7 +159,7 @@  struct  intel_engine_cs {
 	unsigned int guc_id;
 	u32		mmio_base;
 	struct		drm_device *dev;
-	struct intel_ringbuffer *buffer;
+	struct intel_ringbuffer *ring;
 	struct list_head buffers;
 
 	/*
@@ -434,8 +434,8 @@  intel_write_status_page(struct intel_engine_cs *engine,
 struct intel_ringbuffer *
 intel_engine_create_ringbuffer(struct intel_engine_cs *engine, int size);
 int intel_pin_and_map_ringbuffer_obj(struct drm_device *dev,
-				     struct intel_ringbuffer *ringbuf);
-void intel_unpin_ringbuffer_obj(struct intel_ringbuffer *ringbuf);
+				     struct intel_ringbuffer *ring);
+void intel_unpin_ringbuffer_obj(struct intel_ringbuffer *ring);
 void intel_ringbuffer_free(struct intel_ringbuffer *ring);
 
 void intel_stop_engine(struct intel_engine_cs *engine);
@@ -448,9 +448,9 @@  int __must_check intel_ring_cacheline_align(struct drm_i915_gem_request *req);
 static inline void intel_ring_emit(struct intel_engine_cs *engine,
 				   u32 data)
 {
-	struct intel_ringbuffer *ringbuf = engine->buffer;
-	iowrite32(data, ringbuf->virtual_start + ringbuf->tail);
-	ringbuf->tail += 4;
+	struct intel_ringbuffer *ring = engine->ring;
+	iowrite32(data, ring->virtual_start + ring->tail);
+	ring->tail += 4;
 }
 static inline void intel_ring_emit_reg(struct intel_engine_cs *engine,
 				       i915_reg_t reg)
@@ -459,12 +459,12 @@  static inline void intel_ring_emit_reg(struct intel_engine_cs *engine,
 }
 static inline void intel_ring_advance(struct intel_engine_cs *engine)
 {
-	struct intel_ringbuffer *ringbuf = engine->buffer;
-	ringbuf->tail &= ringbuf->size - 1;
+	struct intel_ringbuffer *ring = engine->ring;
+	ring->tail &= ring->size - 1;
 }
 int __intel_ring_space(int head, int tail, int size);
-void intel_ring_update_space(struct intel_ringbuffer *ringbuf);
-int intel_ring_space(struct intel_ringbuffer *ringbuf);
+void intel_ring_update_space(struct intel_ringbuffer *ring);
+int intel_ring_space(struct intel_ringbuffer *ring);
 bool intel_engine_stopped(struct intel_engine_cs *engine);
 
 int __must_check intel_engine_idle(struct intel_engine_cs *engine);
@@ -485,9 +485,9 @@  u64 intel_ring_get_active_head(struct intel_engine_cs *engine);
 
 int init_workarounds_ring(struct intel_engine_cs *engine);
 
-static inline u32 intel_ring_get_tail(struct intel_ringbuffer *ringbuf)
+static inline u32 intel_ring_get_tail(struct intel_ringbuffer *ring)
 {
-	return ringbuf->tail;
+	return ring->tail;
 }
 
 /*
@@ -504,13 +504,14 @@  static inline u32 intel_ring_get_tail(struct intel_ringbuffer *ringbuf)
  * will always have sufficient room to do its stuff. The request creation
  * code calls this automatically.
  */
-void intel_ring_reserved_space_reserve(struct intel_ringbuffer *ringbuf, int size);
+void intel_ring_reserved_space_reserve(struct intel_ringbuffer *ring,
+				       int size);
 /* Cancel the reservation, e.g. because the request is being discarded. */
-void intel_ring_reserved_space_cancel(struct intel_ringbuffer *ringbuf);
+void intel_ring_reserved_space_cancel(struct intel_ringbuffer *ring);
 /* Use the reserved space - for use by i915_add_request() only. */
-void intel_ring_reserved_space_use(struct intel_ringbuffer *ringbuf);
+void intel_ring_reserved_space_use(struct intel_ringbuffer *ring);
 /* Finish with the reserved space - for use by i915_add_request() only. */
-void intel_ring_reserved_space_end(struct intel_ringbuffer *ringbuf);
+void intel_ring_reserved_space_end(struct intel_ringbuffer *ring);
 
 /* Legacy ringbuffer specific portion of reservation code: */
 int intel_ring_reserve_space(struct drm_i915_gem_request *request);