// SPDX-License-Identifier: MIT /* * Copyright © 2019 Intel Corporation */ #include "intel_memory_region.h" #include "i915_gem_region.h" #include "i915_drv.h" #include "i915_trace.h" void i915_gem_object_init_memory_region(struct drm_i915_gem_object *obj, struct intel_memory_region *mem) { obj->mm.region = intel_memory_region_get(mem); mutex_lock(&mem->objects.lock); list_add(&obj->mm.region_link, &mem->objects.list); mutex_unlock(&mem->objects.lock); } void i915_gem_object_release_memory_region(struct drm_i915_gem_object *obj) { struct intel_memory_region *mem = obj->mm.region; mutex_lock(&mem->objects.lock); list_del(&obj->mm.region_link); mutex_unlock(&mem->objects.lock); intel_memory_region_put(mem); } struct drm_i915_gem_object * i915_gem_object_create_region(struct intel_memory_region *mem, resource_size_t size, resource_size_t page_size, unsigned int flags) { struct drm_i915_gem_object *obj; resource_size_t default_page_size; int err; /* * NB: Our use of resource_size_t for the size stems from using struct * resource for the mem->region. We might need to revisit this in the * future. */ GEM_BUG_ON(flags & ~I915_BO_ALLOC_FLAGS); if (!mem) return ERR_PTR(-ENODEV); default_page_size = mem->min_page_size; if (page_size) default_page_size = page_size; GEM_BUG_ON(!is_power_of_2_u64(default_page_size)); GEM_BUG_ON(default_page_size < PAGE_SIZE); size = round_up(size, default_page_size); GEM_BUG_ON(!size); GEM_BUG_ON(!IS_ALIGNED(size, I915_GTT_MIN_ALIGNMENT)); if (i915_gem_object_size_2big(size)) return ERR_PTR(-E2BIG); obj = i915_gem_object_alloc(); if (!obj) return ERR_PTR(-ENOMEM); err = mem->ops->init_object(mem, obj, size, page_size, flags); if (err) goto err_object_free; trace_i915_gem_object_create(obj); return obj; err_object_free: i915_gem_object_free(obj); return ERR_PTR(err); }