drivers/gpu/drm/i915/intel_memory_region.h

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2019 Intel Corporation
   4  */
   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
  15 struct drm_i915_private;
  16 struct drm_i915_gem_object;
  17 struct drm_printer;
  18 struct intel_memory_region;
  19 struct sg_table;
  20 struct ttm_resource;
  21
  22 enum 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
  30 enum 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
  47 struct 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
  59 struct 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
  88 struct intel_memory_region *
  89 intel_memory_region_lookup(struct drm_i915_private *i915,
  90                            u16 class, u16 instance);
  91
  92 struct intel_memory_region *
  93 intel_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
 103 void intel_memory_region_destroy(struct intel_memory_region *mem);
 104
 105 int intel_memory_regions_hw_probe(struct drm_i915_private *i915);
 106 void intel_memory_regions_driver_release(struct drm_i915_private *i915);
 107 struct intel_memory_region *
 108 intel_memory_region_by_type(struct drm_i915_private *i915,
 109                             enum intel_memory_type mem_type);
 110
 111 __printf(2, 3) void
 112 intel_memory_region_set_name(struct intel_memory_region *mem,
 113                              const char *fmt, ...);
 114
 115 int intel_memory_region_reserve(struct intel_memory_region *mem,
 116                                 resource_size_t offset,
 117                                 resource_size_t size);
 118
 119 void intel_memory_region_debug(struct intel_memory_region *mr,
 120                                struct drm_printer *printer);
 121
 122 void intel_memory_region_avail(struct intel_memory_region *mr,
 123                                u64 *avail, u64 *visible_avail);
 124
 125 struct intel_memory_region *
 126 i915_gem_ttm_system_setup(struct drm_i915_private *i915,
 127                           u16 type, u16 instance);
 128 struct intel_memory_region *
 129 i915_gem_shmem_setup(struct drm_i915_private *i915,
 130                      u16 type, u16 instance);
 131
 132 #endif