[RFC 31/31] drm/i915: Eliminate dual personality of i915_scratch_offset

[Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Scratch vma lives under gt but the API used to work on i915. Make this
consistent by renaming the function to intel_gt_scratch_offset and make
it take struct intel_gt.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_engine_cs.c  |  2 +-
 drivers/gpu/drm/i915/gt/intel_gt.h         |  5 ++++
 drivers/gpu/drm/i915/gt/intel_lrc.c        |  9 ++++---
 drivers/gpu/drm/i915/gt/intel_ringbuffer.c | 29 ++++++++++++++--------
 drivers/gpu/drm/i915/i915_drv.h            |  5 ----
 drivers/gpu/drm/i915/i915_gem.c            | 21 ++++++++++++----
 drivers/gpu/drm/i915/i915_gpu_error.c      |  2 +-
 7 files changed, 46 insertions(+), 27 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index cd8b22c934c5..aae22f6d4a72 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -739,7 +739,7 @@ static int measure_breadcrumb_dw(struct intel_engine_cs *engine)
 	struct measure_breadcrumb *frame;
 	int dw = -ENOMEM;
 
-	GEM_BUG_ON(!engine->i915->gt.scratch);
+	GEM_BUG_ON(!engine->gt->scratch);
 
 	frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 	if (!frame)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.h b/drivers/gpu/drm/i915/gt/intel_gt.h
index 53fcf4f276d3..efc1bc381428 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt.h
@@ -27,4 +27,9 @@ static inline void intel_gt_chipset_flush(struct intel_gt *gt)
 		intel_gtt_chipset_flush();
 }
 
+static inline u32 intel_gt_scratch_offset(const struct intel_gt *gt)
+{
+	return i915_ggtt_offset(gt->scratch);
+}
+
 #endif /* __INTEL_GT_H__ */
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 80d4fd71b01f..d2e842d99c9c 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -135,6 +135,7 @@
 
 #include "gem/i915_gem_context.h"
 
+#include "gt/intel_gt.h"
 #include "i915_drv.h"
 #include "i915_gem_render_state.h"
 #include "i915_vgpu.h"
@@ -1728,7 +1729,7 @@ gen8_emit_flush_coherentl3_wa(struct intel_engine_cs *engine, u32 *batch)
 	/* NB no one else is allowed to scribble over scratch + 256! */
 	*batch++ = MI_STORE_REGISTER_MEM_GEN8 | MI_SRM_LRM_GLOBAL_GTT;
 	*batch++ = i915_mmio_reg_offset(GEN8_L3SQCREG4);
-	*batch++ = i915_scratch_offset(engine->i915) + 256;
+	*batch++ = intel_gt_scratch_offset(engine->gt) + 256;
 	*batch++ = 0;
 
 	*batch++ = MI_LOAD_REGISTER_IMM(1);
@@ -1742,7 +1743,7 @@ gen8_emit_flush_coherentl3_wa(struct intel_engine_cs *engine, u32 *batch)
 
 	*batch++ = MI_LOAD_REGISTER_MEM_GEN8 | MI_SRM_LRM_GLOBAL_GTT;
 	*batch++ = i915_mmio_reg_offset(GEN8_L3SQCREG4);
-	*batch++ = i915_scratch_offset(engine->i915) + 256;
+	*batch++ = intel_gt_scratch_offset(engine->gt) + 256;
 	*batch++ = 0;
 
 	return batch;
@@ -1779,7 +1780,7 @@ static u32 *gen8_init_indirectctx_bb(struct intel_engine_cs *engine, u32 *batch)
 				       PIPE_CONTROL_GLOBAL_GTT_IVB |
 				       PIPE_CONTROL_CS_STALL |
 				       PIPE_CONTROL_QW_WRITE,
-				       i915_scratch_offset(engine->i915) +
+				       intel_gt_scratch_offset(engine->gt) +
 				       2 * CACHELINE_BYTES);
 
 	*batch++ = MI_ARB_ON_OFF | MI_ARB_ENABLE;
@@ -2486,7 +2487,7 @@ static int gen8_emit_flush_render(struct i915_request *request,
 {
 	struct intel_engine_cs *engine = request->engine;
 	u32 scratch_addr =
-		i915_scratch_offset(engine->i915) + 2 * CACHELINE_BYTES;
+		intel_gt_scratch_offset(engine->gt) + 2 * CACHELINE_BYTES;
 	bool vf_flush_wa = false, dc_flush_wa = false;
 	u32 *cs, flags = 0;
 	int len;
diff --git a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
index 79d550e5d86a..b09e57ab3dd6 100644
--- a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
@@ -33,6 +33,8 @@
 
 #include "gem/i915_gem_context.h"
 
+#include "gt/intel_gt.h"
+
 #include "i915_drv.h"
 #include "i915_gem_render_state.h"
 #include "i915_trace.h"
@@ -75,7 +77,7 @@ gen2_render_ring_flush(struct i915_request *rq, u32 mode)
 	*cs++ = cmd;
 	while (num_store_dw--) {
 		*cs++ = MI_STORE_DWORD_IMM | MI_MEM_VIRTUAL;
-		*cs++ = i915_scratch_offset(rq->i915);
+		*cs++ = intel_gt_scratch_offset(rq->engine->gt);
 		*cs++ = 0;
 	}
 	*cs++ = MI_FLUSH | MI_NO_WRITE_FLUSH;
@@ -148,7 +150,8 @@ gen4_render_ring_flush(struct i915_request *rq, u32 mode)
 	 */
 	if (mode & EMIT_INVALIDATE) {
 		*cs++ = GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE;
-		*cs++ = i915_scratch_offset(rq->i915) | PIPE_CONTROL_GLOBAL_GTT;
+		*cs++ = intel_gt_scratch_offset(rq->engine->gt) |
+			PIPE_CONTROL_GLOBAL_GTT;
 		*cs++ = 0;
 		*cs++ = 0;
 
@@ -156,7 +159,8 @@ gen4_render_ring_flush(struct i915_request *rq, u32 mode)
 			*cs++ = MI_FLUSH;
 
 		*cs++ = GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE;
-		*cs++ = i915_scratch_offset(rq->i915) | PIPE_CONTROL_GLOBAL_GTT;
+		*cs++ = intel_gt_scratch_offset(rq->engine->gt) |
+			PIPE_CONTROL_GLOBAL_GTT;
 		*cs++ = 0;
 		*cs++ = 0;
 	}
@@ -208,7 +212,8 @@ gen4_render_ring_flush(struct i915_request *rq, u32 mode)
 static int
 gen6_emit_post_sync_nonzero_flush(struct i915_request *rq)
 {
-	u32 scratch_addr = i915_scratch_offset(rq->i915) + 2 * CACHELINE_BYTES;
+	u32 scratch_addr =
+		intel_gt_scratch_offset(rq->engine->gt) + 2 * CACHELINE_BYTES;
 	u32 *cs;
 
 	cs = intel_ring_begin(rq, 6);
@@ -241,7 +246,8 @@ gen6_emit_post_sync_nonzero_flush(struct i915_request *rq)
 static int
 gen6_render_ring_flush(struct i915_request *rq, u32 mode)
 {
-	u32 scratch_addr = i915_scratch_offset(rq->i915) + 2 * CACHELINE_BYTES;
+	u32 scratch_addr =
+		intel_gt_scratch_offset(rq->engine->gt) + 2 * CACHELINE_BYTES;
 	u32 *cs, flags = 0;
 	int ret;
 
@@ -299,7 +305,7 @@ static u32 *gen6_rcs_emit_breadcrumb(struct i915_request *rq, u32 *cs)
 
 	*cs++ = GFX_OP_PIPE_CONTROL(4);
 	*cs++ = PIPE_CONTROL_QW_WRITE;
-	*cs++ = i915_scratch_offset(rq->i915) | PIPE_CONTROL_GLOBAL_GTT;
+	*cs++ = intel_gt_scratch_offset(rq->engine->gt) | PIPE_CONTROL_GLOBAL_GTT;
 	*cs++ = 0;
 
 	/* Finally we can flush and with it emit the breadcrumb */
@@ -342,7 +348,8 @@ gen7_render_ring_cs_stall_wa(struct i915_request *rq)
 static int
 gen7_render_ring_flush(struct i915_request *rq, u32 mode)
 {
-	u32 scratch_addr = i915_scratch_offset(rq->i915) + 2 * CACHELINE_BYTES;
+	u32 scratch_addr =
+		intel_gt_scratch_offset(rq->engine->gt) + 2 * CACHELINE_BYTES;
 	u32 *cs, flags = 0;
 
 	/*
@@ -1072,9 +1079,9 @@ i830_emit_bb_start(struct i915_request *rq,
 		   u64 offset, u32 len,
 		   unsigned int dispatch_flags)
 {
-	u32 *cs, cs_offset = i915_scratch_offset(rq->i915);
+	u32 *cs, cs_offset = intel_gt_scratch_offset(rq->engine->gt);
 
-	GEM_BUG_ON(rq->i915->gt.scratch->size < I830_WA_SIZE);
+	GEM_BUG_ON(rq->engine->gt->scratch->size < I830_WA_SIZE);
 
 	cs = intel_ring_begin(rq, 6);
 	if (IS_ERR(cs))
@@ -1543,7 +1550,7 @@ static int flush_pd_dir(struct i915_request *rq)
 	/* Stall until the page table load is complete */
 	*cs++ = MI_STORE_REGISTER_MEM | MI_SRM_LRM_GLOBAL_GTT;
 	*cs++ = i915_mmio_reg_offset(RING_PP_DIR_BASE(engine->mmio_base));
-	*cs++ = i915_scratch_offset(rq->i915);
+	*cs++ = intel_gt_scratch_offset(rq->engine->gt);
 	*cs++ = MI_NOOP;
 
 	intel_ring_advance(rq, cs);
@@ -1659,7 +1666,7 @@ static inline int mi_set_context(struct i915_request *rq, u32 flags)
 			/* Insert a delay before the next switch! */
 			*cs++ = MI_STORE_REGISTER_MEM | MI_SRM_LRM_GLOBAL_GTT;
 			*cs++ = i915_mmio_reg_offset(last_reg);
-			*cs++ = i915_scratch_offset(rq->i915);
+			*cs++ = intel_gt_scratch_offset(rq->engine->gt);
 			*cs++ = MI_NOOP;
 		}
 		*cs++ = MI_ARB_ON_OFF | MI_ARB_ENABLE;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1957a085221b..b07a6bbb0342 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2832,11 +2832,6 @@ static inline int intel_hws_csb_write_index(struct drm_i915_private *i915)
 		return I915_HWS_CSB_WRITE_INDEX;
 }
 
-static inline u32 i915_scratch_offset(const struct drm_i915_private *i915)
-{
-	return i915_ggtt_offset(i915->gt.scratch);
-}
-
 static inline enum i915_map_type
 i915_coherent_map_type(struct drm_i915_private *i915)
 {
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index ad1dc58a2374..c80e26c1437d 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1423,9 +1423,9 @@ static int __intel_engines_record_defaults(struct drm_i915_private *i915)
 	goto out_ctx;
 }
 
-static int
-i915_gem_init_scratch(struct drm_i915_private *i915, unsigned int size)
+static int gt_init_scratch(struct intel_gt *gt, unsigned int size)
 {
+	struct drm_i915_private *i915 = gt->i915;
 	struct drm_i915_gem_object *obj;
 	struct i915_vma *vma;
 	int ret;
@@ -1438,7 +1438,7 @@ i915_gem_init_scratch(struct drm_i915_private *i915, unsigned int size)
 		return PTR_ERR(obj);
 	}
 
-	vma = i915_vma_instance(obj, &i915->ggtt.vm, NULL);
+	vma = i915_vma_instance(obj, &gt->ggtt->vm, NULL);
 	if (IS_ERR(vma)) {
 		ret = PTR_ERR(vma);
 		goto err_unref;
@@ -1448,7 +1448,7 @@ i915_gem_init_scratch(struct drm_i915_private *i915, unsigned int size)
 	if (ret)
 		goto err_unref;
 
-	i915->gt.scratch = vma;
+	gt->scratch = vma;
 	return 0;
 
 err_unref:
@@ -1456,9 +1456,20 @@ i915_gem_init_scratch(struct drm_i915_private *i915, unsigned int size)
 	return ret;
 }
 
+static int
+i915_gem_init_scratch(struct drm_i915_private *i915, unsigned int size)
+{
+	return gt_init_scratch(&i915->gt, size);
+}
+
+static void gt_fini_scratch(struct intel_gt *gt)
+{
+	i915_vma_unpin_and_release(&gt->scratch, 0);
+}
+
 static void i915_gem_fini_scratch(struct drm_i915_private *i915)
 {
-	i915_vma_unpin_and_release(&i915->gt.scratch, 0);
+	gt_fini_scratch(&i915->gt);
 }
 
 static int intel_engines_verify_workarounds(struct drm_i915_private *i915)
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index d0f9b4aba241..2589c6766dc4 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1445,7 +1445,7 @@ static void gem_record_rings(struct i915_gpu_state *error)
 			if (HAS_BROKEN_CS_TLB(i915))
 				ee->wa_batchbuffer =
 					i915_error_object_create(i915,
-								 i915->gt.scratch);
+								 engine->gt->scratch);
 			request_record_user_bo(request, ee);
 
 			ee->ctx =
-- 
2.20.1

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