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1/* SPDX-License-Identifier: MIT */2/*3 * Copyright © 2019 Intel Corporation4 */5 6#ifndef __INTEL_MEMORY_REGION_H__7#define __INTEL_MEMORY_REGION_H__8 9#include <linux/ioport.h>10#include <linux/mutex.h>11#include <linux/io-mapping.h>12#include <drm/drm_mm.h>13#include <uapi/drm/i915_drm.h>14 15struct drm_i915_private;16struct drm_i915_gem_object;17struct drm_printer;18struct intel_memory_region;19struct sg_table;20struct ttm_resource;21 22enum intel_memory_type {23 INTEL_MEMORY_SYSTEM = I915_MEMORY_CLASS_SYSTEM,24 INTEL_MEMORY_LOCAL = I915_MEMORY_CLASS_DEVICE,25 INTEL_MEMORY_STOLEN_SYSTEM,26 INTEL_MEMORY_STOLEN_LOCAL,27 INTEL_MEMORY_MOCK,28};29 30enum intel_region_id {31 INTEL_REGION_SMEM = 0,32 INTEL_REGION_LMEM_0,33 INTEL_REGION_LMEM_1,34 INTEL_REGION_LMEM_2,35 INTEL_REGION_LMEM_3,36 INTEL_REGION_STOLEN_SMEM,37 INTEL_REGION_STOLEN_LMEM,38 INTEL_REGION_UNKNOWN, /* Should be last */39};40 41#define I915_ALLOC_CONTIGUOUS BIT(0)42 43#define for_each_memory_region(mr, i915, id) \44 for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \45 for_each_if((mr) = (i915)->mm.regions[id])46 47struct intel_memory_region_ops {48 int (*init)(struct intel_memory_region *mem);49 int (*release)(struct intel_memory_region *mem);50 51 int (*init_object)(struct intel_memory_region *mem,52 struct drm_i915_gem_object *obj,53 resource_size_t offset,54 resource_size_t size,55 resource_size_t page_size,56 unsigned int flags);57};58 59struct intel_memory_region {60 struct drm_i915_private *i915;61 62 const struct intel_memory_region_ops *ops;63 64 struct io_mapping iomap;65 struct resource region;66 67 struct resource io;68 resource_size_t min_page_size;69 resource_size_t total;70 71 u16 type;72 u16 instance;73 enum intel_region_id id;74 char name[16];75 char uabi_name[16];76 bool private; /* not for userspace */77 78 struct {79 struct mutex lock; /* Protects access to objects */80 struct list_head list;81 } objects;82 83 bool is_range_manager;84 85 void *region_private;86};87 88struct intel_memory_region *89intel_memory_region_lookup(struct drm_i915_private *i915,90 u16 class, u16 instance);91 92struct intel_memory_region *93intel_memory_region_create(struct drm_i915_private *i915,94 resource_size_t start,95 resource_size_t size,96 resource_size_t min_page_size,97 resource_size_t io_start,98 resource_size_t io_size,99 u16 type,100 u16 instance,101 const struct intel_memory_region_ops *ops);102 103void intel_memory_region_destroy(struct intel_memory_region *mem);104 105int intel_memory_regions_hw_probe(struct drm_i915_private *i915);106void intel_memory_regions_driver_release(struct drm_i915_private *i915);107struct intel_memory_region *108intel_memory_region_by_type(struct drm_i915_private *i915,109 enum intel_memory_type mem_type);110 111__printf(2, 3) void112intel_memory_region_set_name(struct intel_memory_region *mem,113 const char *fmt, ...);114 115int intel_memory_region_reserve(struct intel_memory_region *mem,116 resource_size_t offset,117 resource_size_t size);118 119void intel_memory_region_debug(struct intel_memory_region *mr,120 struct drm_printer *printer);121 122void intel_memory_region_avail(struct intel_memory_region *mr,123 u64 *avail, u64 *visible_avail);124 125struct intel_memory_region *126i915_gem_ttm_system_setup(struct drm_i915_private *i915,127 u16 type, u16 instance);128struct intel_memory_region *129i915_gem_shmem_setup(struct drm_i915_private *i915,130 u16 type, u16 instance);131 132#endif133