From: Chris Wilson Date: Fri, 9 Aug 2019 18:25:17 +0000 (+0100) Subject: drm/i915: Push the ring creation flags to the backend X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=48ae397b6b935c6733f15476c338df27eac9293c;p=openwrt%2Fstaging%2Fblogic.git drm/i915: Push the ring creation flags to the backend Push the ring creation flags from the outer GEM context to the inner intel_context to avoid an unsightly back-reference from inside the backend. Signed-off-by: Chris Wilson Reviewed-by: Andi Shyti Link: https://patchwork.freedesktop.org/patch/msgid/20190809182518.20486-3-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index afd994391ad7..d1952637cd91 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -436,8 +436,6 @@ __create_context(struct drm_i915_private *i915) i915_gem_context_set_bannable(ctx); i915_gem_context_set_recoverable(ctx); - ctx->ring_size = 4 * PAGE_SIZE; - for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp); i++) ctx->hang_timestamp[i] = jiffies - CONTEXT_FAST_HANG_JIFFIES; @@ -448,22 +446,34 @@ err_free: return ERR_PTR(err); } +static void +context_apply_all(struct i915_gem_context *ctx, + void (*fn)(struct intel_context *ce, void *data), + void *data) +{ + struct i915_gem_engines_iter it; + struct intel_context *ce; + + for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) + fn(ce, data); + i915_gem_context_unlock_engines(ctx); +} + +static void __apply_ppgtt(struct intel_context *ce, void *vm) +{ + i915_vm_put(ce->vm); + ce->vm = i915_vm_get(vm); +} + static struct i915_address_space * __set_ppgtt(struct i915_gem_context *ctx, struct i915_address_space *vm) { struct i915_address_space *old = ctx->vm; - struct i915_gem_engines_iter it; - struct intel_context *ce; GEM_BUG_ON(old && i915_vm_is_4lvl(vm) != i915_vm_is_4lvl(old)); ctx->vm = i915_vm_get(vm); - - for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) { - i915_vm_put(ce->vm); - ce->vm = i915_vm_get(vm); - } - i915_gem_context_unlock_engines(ctx); + context_apply_all(ctx, __apply_ppgtt, vm); return old; } @@ -560,7 +570,6 @@ i915_gem_context_create_kernel(struct drm_i915_private *i915, int prio) i915_gem_context_clear_bannable(ctx); ctx->sched.priority = I915_USER_PRIORITY(prio); - ctx->ring_size = PAGE_SIZE; GEM_BUG_ON(!i915_gem_context_is_kernel(ctx)); @@ -1544,6 +1553,7 @@ set_engines(struct i915_gem_context *ctx, for (n = 0; n < num_engines; n++) { struct i915_engine_class_instance ci; struct intel_engine_cs *engine; + struct intel_context *ce; if (copy_from_user(&ci, &user->engines[n], sizeof(ci))) { __free_engines(set.engines, n); @@ -1566,11 +1576,13 @@ set_engines(struct i915_gem_context *ctx, return -ENOENT; } - set.engines->engines[n] = intel_context_create(ctx, engine); - if (!set.engines->engines[n]) { + ce = intel_context_create(ctx, engine); + if (IS_ERR(ce)) { __free_engines(set.engines, n); - return -ENOMEM; + return PTR_ERR(ce); } + + set.engines->engines[n] = ce; } set.engines->num_engines = num_engines; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index a02d98494078..260d59cc3de8 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -169,9 +169,6 @@ struct i915_gem_context { struct i915_sched_attr sched; - /** ring_size: size for allocating the per-engine ring buffer */ - u32 ring_size; - /** guilty_count: How many times this context has caused a GPU hang. */ atomic_t guilty_count; /** diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c index 41d38e661de7..6d1d4e8dbfc9 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.c +++ b/drivers/gpu/drm/i915/gt/intel_context.c @@ -222,6 +222,7 @@ intel_context_init(struct intel_context *ce, ce->engine = engine; ce->ops = engine->cops; ce->sseu = engine->sseu; + ce->ring = __intel_context_ring_size(SZ_16K); INIT_LIST_HEAD(&ce->signal_link); INIT_LIST_HEAD(&ce->signals); diff --git a/drivers/gpu/drm/i915/gt/intel_context.h b/drivers/gpu/drm/i915/gt/intel_context.h index 07f9924de48f..13f28dd316bc 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.h +++ b/drivers/gpu/drm/i915/gt/intel_context.h @@ -136,4 +136,9 @@ int intel_context_prepare_remote_request(struct intel_context *ce, struct i915_request *intel_context_create_request(struct intel_context *ce); +static inline struct intel_ring *__intel_context_ring_size(u64 sz) +{ + return u64_to_ptr(struct intel_ring, sz); +} + #endif /* __INTEL_CONTEXT_H__ */ diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 634ef45b77da..ece731ab7b3a 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -738,6 +738,8 @@ create_kernel_context(struct intel_engine_cs *engine) if (IS_ERR(ce)) return ce; + ce->ring = __intel_context_ring_size(SZ_4K); + err = intel_context_pin(ce); if (err) { intel_context_put(ce); diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index a986ea87fbd9..fc5fcc2d03ac 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -3115,9 +3115,8 @@ static int __execlists_context_alloc(struct intel_context *ce, goto error_deref_obj; } - ring = intel_engine_create_ring(engine, - timeline, - ce->gem_context->ring_size); + ring = intel_engine_create_ring(engine, timeline, + (unsigned long)ce->ring); intel_timeline_put(timeline); if (IS_ERR(ring)) { ret = PTR_ERR(ring); diff --git a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c index 6a2892033457..d5b7e4dde762 100644 --- a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c @@ -2350,7 +2350,7 @@ int intel_ring_submission_init(struct intel_engine_cs *engine) } GEM_BUG_ON(timeline->has_initial_breadcrumb); - ring = intel_engine_create_ring(engine, timeline, 32 * PAGE_SIZE); + ring = intel_engine_create_ring(engine, timeline, SZ_16K); intel_timeline_put(timeline); if (IS_ERR(ring)) { err = PTR_ERR(ring); diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c b/drivers/gpu/drm/i915/gt/mock_engine.c index 848a83a38b08..79baed1aaf38 100644 --- a/drivers/gpu/drm/i915/gt/mock_engine.c +++ b/drivers/gpu/drm/i915/gt/mock_engine.c @@ -140,7 +140,7 @@ static void mock_context_destroy(struct kref *ref) GEM_BUG_ON(intel_context_is_pinned(ce)); - if (ce->ring) + if (test_bit(CONTEXT_ALLOC_BIT, &ce->flags)) mock_ring_free(ce->ring); intel_context_fini(ce); diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c index 4cb3c71327fe..dfb64a6ec838 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.c +++ b/drivers/gpu/drm/i915/gvt/scheduler.c @@ -1227,8 +1227,6 @@ int intel_vgpu_setup_submission(struct intel_vgpu *vgpu) } i915_gem_context_set_force_single_submission(ctx); - if (!USES_GUC_SUBMISSION(i915)) - ctx->ring_size = 512 * PAGE_SIZE; /* Max ring buffer size */ i915_context_ppgtt_root_save(s, i915_vm_to_ppgtt(ctx->vm)); @@ -1244,6 +1242,12 @@ int intel_vgpu_setup_submission(struct intel_vgpu *vgpu) goto out_shadow_ctx; } + if (!USES_GUC_SUBMISSION(i915)) { /* Max ring buffer size */ + const unsigned int ring_size = 512 * SZ_4K; + + ce->ring = __intel_context_ring_size(ring_size); + } + ret = intel_context_pin(ce); intel_context_put(ce); if (ret) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index bddbbd959d1b..e4f173f2f3c3 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -324,10 +324,14 @@ static void print_context_stats(struct seq_file *m, for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) { - if (ce->state) - per_file_stats(0, ce->state->obj, &kstats); - if (ce->ring) + intel_context_lock_pinned(ce); + if (intel_context_is_pinned(ce)) { + if (ce->state) + per_file_stats(0, + ce->state->obj, &kstats); per_file_stats(0, ce->ring->vma->obj, &kstats); + } + intel_context_unlock_pinned(ce); } i915_gem_context_unlock_engines(ctx); @@ -1627,12 +1631,15 @@ static int i915_context_status(struct seq_file *m, void *unused) for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) { - seq_printf(m, "%s: ", ce->engine->name); - if (ce->state) - describe_obj(m, ce->state->obj); - if (ce->ring) + intel_context_lock_pinned(ce); + if (intel_context_is_pinned(ce)) { + seq_printf(m, "%s: ", ce->engine->name); + if (ce->state) + describe_obj(m, ce->state->obj); describe_ctx_ring(m, ce->ring); - seq_putc(m, '\n'); + seq_putc(m, '\n'); + } + intel_context_unlock_pinned(ce); } i915_gem_context_unlock_engines(ctx);