drm/i915: Make timelines gt centric

Our timelines are stored inside intel_gt so we can convert the interface
to take exactly that and not i915.

At the same time re-order the params to our more typical layout and
replace the backpointer to the new containing structure.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190621070811.7006-31-tvrtko.ursulin@linux.intel.com

drivers/gpu/drm/i915/gem/i915_gem_context.c

@@ -530,7 +530,7 @@ i915_gem_create_context(struct drm_i915_private *dev_priv, unsigned int flags)
 	if (flags & I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE) {
 		struct i915_timeline *timeline;
 
-		timeline = i915_timeline_create(dev_priv, NULL);
+		timeline = i915_timeline_create(&dev_priv->gt, NULL);
 		if (IS_ERR(timeline)) {
 			context_close(ctx);
 			return ERR_CAST(timeline);

drivers/gpu/drm/i915/gt/intel_engine_cs.c

@@ -740,8 +740,8 @@ static int measure_breadcrumb_dw(struct intel_engine_cs *engine)
 	if (!frame)
 		return -ENOMEM;
 
-	if (i915_timeline_init(engine->i915,
-			       &frame->timeline,
+	if (i915_timeline_init(&frame->timeline,
+			       engine->gt,
 			       engine->status_page.vma))
 		goto out_frame;
 

drivers/gpu/drm/i915/gt/intel_lrc.c

@@ -3005,12 +3005,13 @@ populate_lr_context(struct intel_context *ce,
 	return ret;
 }
 
-static struct i915_timeline *get_timeline(struct i915_gem_context *ctx)
+static struct i915_timeline *
+get_timeline(struct i915_gem_context *ctx, struct intel_gt *gt)
 {
 	if (ctx->timeline)
 		return i915_timeline_get(ctx->timeline);
 	else
-		return i915_timeline_create(ctx->i915, NULL);
+		return i915_timeline_create(gt, NULL);
 }
 
 static int execlists_context_deferred_alloc(struct intel_context *ce,
@@ -3044,7 +3045,7 @@ static int execlists_context_deferred_alloc(struct intel_context *ce,
 		goto error_deref_obj;
 	}
 
-	timeline = get_timeline(ce->gem_context);
+	timeline = get_timeline(ce->gem_context, engine->gt);
 	if (IS_ERR(timeline)) {
 		ret = PTR_ERR(timeline);
 		goto error_deref_obj;

drivers/gpu/drm/i915/gt/intel_ringbuffer.c

@@ -2273,7 +2273,7 @@ int intel_ring_submission_init(struct intel_engine_cs *engine)
 	struct intel_ring *ring;
 	int err;
 
-	timeline = i915_timeline_create(engine->i915, engine->status_page.vma);
+	timeline = i915_timeline_create(engine->gt, engine->status_page.vma);
 	if (IS_ERR(timeline)) {
 		err = PTR_ERR(timeline);
 		goto err;

drivers/gpu/drm/i915/gt/mock_engine.c

@@ -56,7 +56,7 @@ static struct intel_ring *mock_ring(struct intel_engine_cs *engine)
 	if (!ring)
 		return NULL;
 
-	if (i915_timeline_init(engine->i915, &ring->timeline, NULL)) {
+	if (i915_timeline_init(&ring->timeline, engine->gt, NULL)) {
 		kfree(ring);
 		return NULL;
 	}

drivers/gpu/drm/i915/i915_timeline.c

@@ -4,6 +4,8 @@
  * Copyright © 2016-2018 Intel Corporation
  */
 
+#include "gt/intel_gt_types.h"
+
 #include "i915_drv.h"
 
 #include "i915_active.h"
@@ -14,7 +16,8 @@
 #define ptr_test_bit(ptr, bit) ((unsigned long)(ptr) & BIT(bit))
 
 struct i915_timeline_hwsp {
-	struct i915_gt_timelines *gt;
+	struct intel_gt *gt;
+	struct i915_gt_timelines *gt_timelines;
 	struct list_head free_link;
 	struct i915_vma *vma;
 	u64 free_bitmap;
@@ -28,14 +31,9 @@ struct i915_timeline_cacheline {
 #define CACHELINE_FREE CACHELINE_BITS
 };
 
-static inline struct drm_i915_private *
-hwsp_to_i915(struct i915_timeline_hwsp *hwsp)
-{
-	return container_of(hwsp->gt, struct drm_i915_private, gt.timelines);
-}
-
-static struct i915_vma *__hwsp_alloc(struct drm_i915_private *i915)
+static struct i915_vma *__hwsp_alloc(struct intel_gt *gt)
 {
+	struct drm_i915_private *i915 = gt->i915;
 	struct drm_i915_gem_object *obj;
 	struct i915_vma *vma;
 
@@ -45,7 +43,7 @@ static struct i915_vma *__hwsp_alloc(struct drm_i915_private *i915)
 
 	i915_gem_object_set_cache_coherency(obj, I915_CACHE_LLC);
 
-	vma = i915_vma_instance(obj, &i915->ggtt.vm, NULL);
+	vma = i915_vma_instance(obj, &gt->ggtt->vm, NULL);
 	if (IS_ERR(vma))
 		i915_gem_object_put(obj);
 
@@ -55,8 +53,7 @@ static struct i915_vma *__hwsp_alloc(struct drm_i915_private *i915)
 static struct i915_vma *
 hwsp_alloc(struct i915_timeline *timeline, unsigned int *cacheline)
 {
-	struct drm_i915_private *i915 = timeline->i915;
-	struct i915_gt_timelines *gt = &i915->gt.timelines;
+	struct i915_gt_timelines *gt = &timeline->gt->timelines;
 	struct i915_timeline_hwsp *hwsp;
 
 	BUILD_BUG_ON(BITS_PER_TYPE(u64) * CACHELINE_BYTES > PAGE_SIZE);
@@ -75,16 +72,17 @@ hwsp_alloc(struct i915_timeline *timeline, unsigned int *cacheline)
 		if (!hwsp)
 			return ERR_PTR(-ENOMEM);
 
-		vma = __hwsp_alloc(i915);
+		vma = __hwsp_alloc(timeline->gt);
 		if (IS_ERR(vma)) {
 			kfree(hwsp);
 			return vma;
 		}
 
 		vma->private = hwsp;
+		hwsp->gt = timeline->gt;
 		hwsp->vma = vma;
 		hwsp->free_bitmap = ~0ull;
-		hwsp->gt = gt;
+		hwsp->gt_timelines = gt;
 
 		spin_lock_irq(&gt->hwsp_lock);
 		list_add(&hwsp->free_link, &gt->hwsp_free_list);
@@ -104,7 +102,7 @@ hwsp_alloc(struct i915_timeline *timeline, unsigned int *cacheline)
 
 static void __idle_hwsp_free(struct i915_timeline_hwsp *hwsp, int cacheline)
 {
-	struct i915_gt_timelines *gt = hwsp->gt;
+	struct i915_gt_timelines *gt = hwsp->gt_timelines;
 	unsigned long flags;
 
 	spin_lock_irqsave(&gt->hwsp_lock, flags);
@@ -170,7 +168,7 @@ cacheline_alloc(struct i915_timeline_hwsp *hwsp, unsigned int cacheline)
 	cl->hwsp = hwsp;
 	cl->vaddr = page_pack_bits(vaddr, cacheline);
 
-	i915_active_init(hwsp_to_i915(hwsp), &cl->active, __cacheline_retire);
+	i915_active_init(hwsp->gt->i915, &cl->active, __cacheline_retire);
 
 	return cl;
 }
@@ -196,8 +194,8 @@ static void cacheline_free(struct i915_timeline_cacheline *cl)
 		__idle_cacheline_free(cl);
 }
 
-int i915_timeline_init(struct drm_i915_private *i915,
-		       struct i915_timeline *timeline,
+int i915_timeline_init(struct i915_timeline *timeline,
+		       struct intel_gt *gt,
 		       struct i915_vma *hwsp)
 {
 	void *vaddr;
@@ -212,7 +210,7 @@ int i915_timeline_init(struct drm_i915_private *i915,
 	 */
 	BUILD_BUG_ON(KSYNCMAP < I915_NUM_ENGINES);
 
-	timeline->i915 = i915;
+	timeline->gt = gt;
 	timeline->pin_count = 0;
 	timeline->has_initial_breadcrumb = !hwsp;
 	timeline->hwsp_cacheline = NULL;
@@ -282,7 +280,7 @@ void i915_timelines_init(struct drm_i915_private *i915)
 
 static void timeline_add_to_active(struct i915_timeline *tl)
 {
-	struct i915_gt_timelines *gt = &tl->i915->gt.timelines;
+	struct i915_gt_timelines *gt = &tl->gt->timelines;
 
 	mutex_lock(&gt->mutex);
 	list_add(&tl->link, &gt->active_list);
@@ -291,7 +289,7 @@ static void timeline_add_to_active(struct i915_timeline *tl)
 
 static void timeline_remove_from_active(struct i915_timeline *tl)
 {
-	struct i915_gt_timelines *gt = &tl->i915->gt.timelines;
+	struct i915_gt_timelines *gt = &tl->gt->timelines;
 
 	mutex_lock(&gt->mutex);
 	list_del(&tl->link);
@@ -347,8 +345,7 @@ void i915_timeline_fini(struct i915_timeline *timeline)
 }
 
 struct i915_timeline *
-i915_timeline_create(struct drm_i915_private *i915,
-		     struct i915_vma *global_hwsp)
+i915_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp)
 {
 	struct i915_timeline *timeline;
 	int err;
@@ -357,7 +354,7 @@ i915_timeline_create(struct drm_i915_private *i915,
 	if (!timeline)
 		return ERR_PTR(-ENOMEM);
 
-	err = i915_timeline_init(i915, timeline, global_hwsp);
+	err = i915_timeline_init(timeline, gt, global_hwsp);
 	if (err) {
 		kfree(timeline);
 		return ERR_PTR(err);

drivers/gpu/drm/i915/i915_timeline.h

@@ -31,14 +31,13 @@
 #include "i915_syncmap.h"
 #include "i915_timeline_types.h"
 
-int i915_timeline_init(struct drm_i915_private *i915,
-		       struct i915_timeline *tl,
+int i915_timeline_init(struct i915_timeline *tl,
+		       struct intel_gt *gt,
 		       struct i915_vma *hwsp);
 void i915_timeline_fini(struct i915_timeline *tl);
 
 struct i915_timeline *
-i915_timeline_create(struct drm_i915_private *i915,
-		     struct i915_vma *global_hwsp);
+i915_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp);
 
 static inline struct i915_timeline *
 i915_timeline_get(struct i915_timeline *timeline)

drivers/gpu/drm/i915/i915_timeline_types.h

@@ -59,7 +59,7 @@ struct i915_timeline {
 	struct i915_syncmap *sync;
 
 	struct list_head link;
-	struct drm_i915_private *i915;
+	struct intel_gt *gt;
 
 	struct kref kref;
 };

drivers/gpu/drm/i915/selftests/i915_timeline.c

@@ -66,7 +66,7 @@ static int __mock_hwsp_timeline(struct mock_hwsp_freelist *state,
 		unsigned long cacheline;
 		int err;
 
-		tl = i915_timeline_create(state->i915, NULL);
+		tl = i915_timeline_create(&state->i915->gt, NULL);
 		if (IS_ERR(tl))
 			return PTR_ERR(tl);
 
@@ -448,7 +448,7 @@ tl_write(struct i915_timeline *tl, struct intel_engine_cs *engine, u32 value)
 	struct i915_request *rq;
 	int err;
 
-	lockdep_assert_held(&tl->i915->drm.struct_mutex); /* lazy rq refs */
+	lockdep_assert_held(&tl->gt->i915->drm.struct_mutex); /* lazy rq refs */
 
 	err = i915_timeline_pin(tl);
 	if (err) {
@@ -478,7 +478,7 @@ checked_i915_timeline_create(struct drm_i915_private *i915)
 {
 	struct i915_timeline *tl;
 
-	tl = i915_timeline_create(i915, NULL);
+	tl = i915_timeline_create(&i915->gt, NULL);
 	if (IS_ERR(tl))
 		return tl;
 
@@ -660,7 +660,7 @@ static int live_hwsp_wrap(void *arg)
 	mutex_lock(&i915->drm.struct_mutex);
 	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
 
-	tl = i915_timeline_create(i915, NULL);
+	tl = i915_timeline_create(&i915->gt, NULL);
 	if (IS_ERR(tl)) {
 		err = PTR_ERR(tl);
 		goto out_rpm;

drivers/gpu/drm/i915/selftests/mock_timeline.c

@@ -10,7 +10,7 @@
 
 void mock_timeline_init(struct i915_timeline *timeline, u64 context)
 {
-	timeline->i915 = NULL;
+	timeline->gt = NULL;
 	timeline->fence_context = context;
 
 	mutex_init(&timeline->mutex);