From ba8b7ccb196b07c1c553450e8e7b44a7a938e58a Mon Sep 17 00:00:00 2001 From: Oscar Mateo Date: Thu, 24 Jul 2014 17:04:33 +0100 Subject: [PATCH] drm/i915/bdw: Workload submission mechanism for Execlists This is what i915_gem_do_execbuffer calls when it wants to execute some worload in an Execlists world. v2: Check arguments before doing stuff in intel_execlists_submission. Also, get rel_constants parsing right. Signed-off-by: Oscar Mateo Reviewed-by: Damien Lespiau [danvet: Drop the chipset flush, that's pre-gen6. And appease checkpatch a bit .... again!] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 6 + drivers/gpu/drm/i915/i915_gem_execbuffer.c | 4 +- drivers/gpu/drm/i915/intel_lrc.c | 130 ++++++++++++++++++++- 3 files changed, 135 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 9198f1c96470..53cc4c083d0d 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2266,6 +2266,12 @@ int i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +void i915_gem_execbuffer_move_to_active(struct list_head *vmas, + struct intel_engine_cs *ring); +void i915_gem_execbuffer_retire_commands(struct drm_device *dev, + struct drm_file *file, + struct intel_engine_cs *ring, + struct drm_i915_gem_object *obj); int i915_gem_ringbuffer_submission(struct drm_device *dev, struct drm_file *file, struct intel_engine_cs *ring, diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 26b38b3ae4f3..7e04a4825ed0 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -942,7 +942,7 @@ i915_gem_validate_context(struct drm_device *dev, struct drm_file *file, return ctx; } -static void +void i915_gem_execbuffer_move_to_active(struct list_head *vmas, struct intel_engine_cs *ring) { @@ -983,7 +983,7 @@ i915_gem_execbuffer_move_to_active(struct list_head *vmas, } } -static void +void i915_gem_execbuffer_retire_commands(struct drm_device *dev, struct drm_file *file, struct intel_engine_cs *ring, diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index e0d4ef2a5c30..e1a298f23f50 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -91,6 +91,55 @@ int intel_sanitize_enable_execlists(struct drm_device *dev, int enable_execlists return 0; } +static int logical_ring_invalidate_all_caches(struct intel_ringbuffer *ringbuf) +{ + struct intel_engine_cs *ring = ringbuf->ring; + uint32_t flush_domains; + int ret; + + flush_domains = 0; + if (ring->gpu_caches_dirty) + flush_domains = I915_GEM_GPU_DOMAINS; + + ret = ring->emit_flush(ringbuf, I915_GEM_GPU_DOMAINS, flush_domains); + if (ret) + return ret; + + ring->gpu_caches_dirty = false; + return 0; +} + +static int execlists_move_to_gpu(struct intel_ringbuffer *ringbuf, + struct list_head *vmas) +{ + struct intel_engine_cs *ring = ringbuf->ring; + struct i915_vma *vma; + uint32_t flush_domains = 0; + bool flush_chipset = false; + int ret; + + list_for_each_entry(vma, vmas, exec_list) { + struct drm_i915_gem_object *obj = vma->obj; + + ret = i915_gem_object_sync(obj, ring); + if (ret) + return ret; + + if (obj->base.write_domain & I915_GEM_DOMAIN_CPU) + flush_chipset |= i915_gem_clflush_object(obj, false); + + flush_domains |= obj->base.write_domain; + } + + if (flush_domains & I915_GEM_DOMAIN_GTT) + wmb(); + + /* Unconditionally invalidate gpu caches and ensure that we do flush + * any residual writes from the previous batch. + */ + return logical_ring_invalidate_all_caches(ringbuf); +} + int intel_execlists_submission(struct drm_device *dev, struct drm_file *file, struct intel_engine_cs *ring, struct intel_context *ctx, @@ -99,7 +148,84 @@ int intel_execlists_submission(struct drm_device *dev, struct drm_file *file, struct drm_i915_gem_object *batch_obj, u64 exec_start, u32 flags) { - /* TODO */ + struct drm_i915_private *dev_priv = dev->dev_private; + struct intel_ringbuffer *ringbuf = ctx->engine[ring->id].ringbuf; + int instp_mode; + u32 instp_mask; + int ret; + + instp_mode = args->flags & I915_EXEC_CONSTANTS_MASK; + instp_mask = I915_EXEC_CONSTANTS_MASK; + switch (instp_mode) { + case I915_EXEC_CONSTANTS_REL_GENERAL: + case I915_EXEC_CONSTANTS_ABSOLUTE: + case I915_EXEC_CONSTANTS_REL_SURFACE: + if (instp_mode != 0 && ring != &dev_priv->ring[RCS]) { + DRM_DEBUG("non-0 rel constants mode on non-RCS\n"); + return -EINVAL; + } + + if (instp_mode != dev_priv->relative_constants_mode) { + if (instp_mode == I915_EXEC_CONSTANTS_REL_SURFACE) { + DRM_DEBUG("rel surface constants mode invalid on gen5+\n"); + return -EINVAL; + } + + /* The HW changed the meaning on this bit on gen6 */ + instp_mask &= ~I915_EXEC_CONSTANTS_REL_SURFACE; + } + break; + default: + DRM_DEBUG("execbuf with unknown constants: %d\n", instp_mode); + return -EINVAL; + } + + if (args->num_cliprects != 0) { + DRM_DEBUG("clip rectangles are only valid on pre-gen5\n"); + return -EINVAL; + } else { + if (args->DR4 == 0xffffffff) { + DRM_DEBUG("UXA submitting garbage DR4, fixing up\n"); + args->DR4 = 0; + } + + if (args->DR1 || args->DR4 || args->cliprects_ptr) { + DRM_DEBUG("0 cliprects but dirt in cliprects fields\n"); + return -EINVAL; + } + } + + if (args->flags & I915_EXEC_GEN7_SOL_RESET) { + DRM_DEBUG("sol reset is gen7 only\n"); + return -EINVAL; + } + + ret = execlists_move_to_gpu(ringbuf, vmas); + if (ret) + return ret; + + if (ring == &dev_priv->ring[RCS] && + instp_mode != dev_priv->relative_constants_mode) { + ret = intel_logical_ring_begin(ringbuf, 4); + 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(ringbuf, INSTPM); + intel_logical_ring_emit(ringbuf, instp_mask << 16 | instp_mode); + intel_logical_ring_advance(ringbuf); + + dev_priv->relative_constants_mode = instp_mode; + } + + ret = ring->emit_bb_start(ringbuf, exec_start, flags); + if (ret) + return ret; + + i915_gem_execbuffer_move_to_active(vmas, ring); + i915_gem_execbuffer_retire_commands(dev, file, ring, batch_obj); + return 0; } @@ -363,8 +489,6 @@ static int gen8_init_render_ring(struct intel_engine_cs *ring) static int gen8_emit_bb_start(struct intel_ringbuffer *ringbuf, u64 offset, unsigned flags) { - struct intel_engine_cs *ring = ringbuf->ring; - struct drm_i915_private *dev_priv = ring->dev->dev_private; bool ppgtt = !(flags & I915_DISPATCH_SECURE); int ret; -- 2.34.1