drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h

   1 /* Hisilicon Hibmc SoC drm driver
   2  *
   3  * Based on the bochs drm driver.
   4  *
   5  * Copyright (c) 2016 Huawei Limited.
   6  *
   7  * Author:
   8  *      Rongrong Zou <zourongrong@huawei.com>
   9  *      Rongrong Zou <zourongrong@gmail.com>
  10  *      Jianhua Li <lijianhua@huawei.com>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  */
  18
  19 #ifndef HIBMC_DRM_DRV_H
  20 #define HIBMC_DRM_DRV_H
  21
  22 #include <drm/drmP.h>
  23 #include <drm/drm_atomic.h>
  24 #include <drm/drm_fb_helper.h>
  25 #include <drm/drm_gem.h>
  26 #include <drm/ttm/ttm_bo_driver.h>
  27
  28 struct hibmc_framebuffer {
  29         struct drm_framebuffer fb;
  30         struct drm_gem_object *obj;
  31 };
  32
  33 struct hibmc_fbdev {
  34         struct drm_fb_helper helper;
  35         struct hibmc_framebuffer *fb;
  36         int size;
  37 };
  38
  39 struct hibmc_drm_private {
  40         /* hw */
  41         void __iomem   *mmio;
  42         void __iomem   *fb_map;
  43         unsigned long  fb_base;
  44         unsigned long  fb_size;
  45         bool msi_enabled;
  46
  47         /* drm */
  48         struct drm_device  *dev;
  49         bool mode_config_initialized;
  50         struct drm_atomic_state *suspend_state;
  51
  52         /* ttm */
  53         struct drm_global_reference mem_global_ref;
  54         struct ttm_bo_global_ref bo_global_ref;
  55         struct ttm_bo_device bdev;
  56         bool initialized;
  57
  58         /* fbdev */
  59         struct hibmc_fbdev *fbdev;
  60         bool mm_inited;
  61 };
  62
  63 #define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb)
  64
  65 struct hibmc_bo {
  66         struct ttm_buffer_object bo;
  67         struct ttm_placement placement;
  68         struct ttm_bo_kmap_obj kmap;
  69         struct drm_gem_object gem;
  70         struct ttm_place placements[3];
  71         int pin_count;
  72 };
  73
  74 static inline struct hibmc_bo *hibmc_bo(struct ttm_buffer_object *bo)
  75 {
  76         return container_of(bo, struct hibmc_bo, bo);
  77 }
  78
  79 static inline struct hibmc_bo *gem_to_hibmc_bo(struct drm_gem_object *gem)
  80 {
  81         return container_of(gem, struct hibmc_bo, gem);
  82 }
  83
  84 void hibmc_set_power_mode(struct hibmc_drm_private *priv,
  85                           unsigned int power_mode);
  86 void hibmc_set_current_gate(struct hibmc_drm_private *priv,
  87                             unsigned int gate);
  88
  89 int hibmc_de_init(struct hibmc_drm_private *priv);
  90 int hibmc_vdac_init(struct hibmc_drm_private *priv);
  91 int hibmc_fbdev_init(struct hibmc_drm_private *priv);
  92 void hibmc_fbdev_fini(struct hibmc_drm_private *priv);
  93
  94 int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
  95                      struct drm_gem_object **obj);
  96 struct hibmc_framebuffer *
  97 hibmc_framebuffer_init(struct drm_device *dev,
  98                        const struct drm_mode_fb_cmd2 *mode_cmd,
  99                        struct drm_gem_object *obj);
 100
 101 int hibmc_mm_init(struct hibmc_drm_private *hibmc);
 102 void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
 103 int hibmc_bo_pin(struct hibmc_bo *bo, u32 pl_flag, u64 *gpu_addr);
 104 int hibmc_bo_unpin(struct hibmc_bo *bo);
 105 void hibmc_gem_free_object(struct drm_gem_object *obj);
 106 int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
 107                       struct drm_mode_create_dumb *args);
 108 int hibmc_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
 109                            u32 handle, u64 *offset);
 110 int hibmc_mmap(struct file *filp, struct vm_area_struct *vma);
 111
 112 extern const struct drm_mode_config_funcs hibmc_mode_funcs;
 113
 114 #endif