diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index cbae19bab4bfb33bfb85d48ff89b8e251118f6db..eccb8e406e9c2f7c28c56663280eb7535bf4bbe2 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -635,6 +635,7 @@ struct intel_context { /* Execlists */ struct { struct drm_i915_gem_object *state; + struct intel_ringbuffer *ringbuf; } engine[I915_NUM_RINGS]; struct list_head link; diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 9f30ee80e48701753c60cb0e11979b75312f1da3..0c80bb1f5420b522ee24bf8b3da0fdf3eeafcbf0 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -65,7 +65,11 @@ void intel_lr_context_free(struct intel_context *ctx) for (i = 0; i < I915_NUM_RINGS; i++) { struct drm_i915_gem_object *ctx_obj = ctx->engine[i].state; + struct intel_ringbuffer *ringbuf = ctx->engine[i].ringbuf; + if (ctx_obj) { + intel_destroy_ringbuffer_obj(ringbuf); + kfree(ringbuf); i915_gem_object_ggtt_unpin(ctx_obj); drm_gem_object_unreference(&ctx_obj->base); } @@ -99,6 +103,7 @@ int intel_lr_context_deferred_create(struct intel_context *ctx, struct drm_device *dev = ring->dev; struct drm_i915_gem_object *ctx_obj; uint32_t context_size; + struct intel_ringbuffer *ringbuf; int ret; WARN_ON(ctx->legacy_hw_ctx.rcs_state != NULL); @@ -119,6 +124,39 @@ int intel_lr_context_deferred_create(struct intel_context *ctx, return ret; } + ringbuf = kzalloc(sizeof(*ringbuf), GFP_KERNEL); + if (!ringbuf) { + DRM_DEBUG_DRIVER("Failed to allocate ringbuffer %s\n", + ring->name); + i915_gem_object_ggtt_unpin(ctx_obj); + drm_gem_object_unreference(&ctx_obj->base); + ret = -ENOMEM; + return ret; + } + + ringbuf->size = 32 * PAGE_SIZE; + ringbuf->effective_size = ringbuf->size; + ringbuf->head = 0; + ringbuf->tail = 0; + ringbuf->space = ringbuf->size; + ringbuf->last_retired_head = -1; + + /* TODO: For now we put this in the mappable region so that we can reuse + * the existing ringbuffer code which ioremaps it. When we start + * creating many contexts, this will no longer work and we must switch + * to a kmapish interface. + */ + ret = intel_alloc_ringbuffer_obj(dev, ringbuf); + if (ret) { + DRM_DEBUG_DRIVER("Failed to allocate ringbuffer obj %s: %d\n", + ring->name, ret); + kfree(ringbuf); + i915_gem_object_ggtt_unpin(ctx_obj); + drm_gem_object_unreference(&ctx_obj->base); + return ret; + } + + ctx->engine[ring->id].ringbuf = ringbuf; ctx->engine[ring->id].state = ctx_obj; return 0; diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index a059b64a0fb283502bda0c0ac3cfa468fef9d218..064652034d7eaff5caac3c8b053d5708d39e2b07 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1519,7 +1519,7 @@ static int init_phys_status_page(struct intel_engine_cs *ring) return 0; } -static void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf) +void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf) { if (!ringbuf->obj) return; @@ -1530,8 +1530,8 @@ static void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf) ringbuf->obj = NULL; } -static int intel_alloc_ringbuffer_obj(struct drm_device *dev, - struct intel_ringbuffer *ringbuf) +int intel_alloc_ringbuffer_obj(struct drm_device *dev, + struct intel_ringbuffer *ringbuf) { struct drm_i915_private *dev_priv = to_i915(dev); struct drm_i915_gem_object *obj; diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 70525d0c2c74650ef780a69c797c59316cedd371..669cc7527f9a7ba48661dd13eb8e3a00a50cf581 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -355,6 +355,10 @@ intel_write_status_page(struct intel_engine_cs *ring, #define I915_GEM_HWS_SCRATCH_INDEX 0x30 #define I915_GEM_HWS_SCRATCH_ADDR (I915_GEM_HWS_SCRATCH_INDEX << MI_STORE_DWORD_INDEX_SHIFT) +void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf); +int intel_alloc_ringbuffer_obj(struct drm_device *dev, + struct intel_ringbuffer *ringbuf); + void intel_stop_ring_buffer(struct intel_engine_cs *ring); void intel_cleanup_ring_buffer(struct intel_engine_cs *ring);