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

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* Hisilicon Hibmc SoC drm driver
   3  *
   4  * Based on the bochs drm driver.
   5  *
   6  * Copyright (c) 2016 Huawei Limited.
   7  *
   8  * Author:
   9  *      Rongrong Zou <zourongrong@huawei.com>
  10  *      Rongrong Zou <zourongrong@gmail.com>
  11  *      Jianhua Li <lijianhua@huawei.com>
  12  */
  13
  14 #ifndef HIBMC_DRM_DRV_H
  15 #define HIBMC_DRM_DRV_H
  16
  17 #include <drm/drmP.h>
  18 #include <drm/drm_atomic.h>
  19 #include <drm/drm_fb_helper.h>
  20 #include <drm/drm_gem.h>
  21 #include <drm/ttm/ttm_bo_driver.h>
  22
  23 struct hibmc_framebuffer {
  24         struct drm_framebuffer fb;
  25         struct drm_gem_object *obj;
  26 };
  27
  28 struct hibmc_fbdev {
  29         struct drm_fb_helper helper; /* must be first */
  30         struct hibmc_framebuffer *fb;
  31         int size;
  32 };
  33
  34 struct hibmc_drm_private {
  35         /* hw */
  36         void __iomem   *mmio;
  37         void __iomem   *fb_map;
  38         unsigned long  fb_base;
  39         unsigned long  fb_size;
  40         bool msi_enabled;
  41
  42         /* drm */
  43         struct drm_device  *dev;
  44         bool mode_config_initialized;
  45
  46         /* ttm */
  47         struct ttm_bo_device bdev;
  48         bool initialized;
  49
  50         /* fbdev */
  51         struct hibmc_fbdev *fbdev;
  52         bool mm_inited;
  53 };
  54
  55 #define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb)
  56
  57 struct hibmc_bo {
  58         struct ttm_buffer_object bo;
  59         struct ttm_placement placement;
  60         struct ttm_bo_kmap_obj kmap;
  61         struct drm_gem_object gem;
  62         struct ttm_place placements[3];
  63         int pin_count;
  64 };
  65
  66 static inline struct hibmc_bo *hibmc_bo(struct ttm_buffer_object *bo)
  67 {
  68         return container_of(bo, struct hibmc_bo, bo);
  69 }
  70
  71 static inline struct hibmc_bo *gem_to_hibmc_bo(struct drm_gem_object *gem)
  72 {
  73         return container_of(gem, struct hibmc_bo, gem);
  74 }
  75
  76 void hibmc_set_power_mode(struct hibmc_drm_private *priv,
  77                           unsigned int power_mode);
  78 void hibmc_set_current_gate(struct hibmc_drm_private *priv,
  79                             unsigned int gate);
  80
  81 int hibmc_de_init(struct hibmc_drm_private *priv);
  82 int hibmc_vdac_init(struct hibmc_drm_private *priv);
  83 int hibmc_fbdev_init(struct hibmc_drm_private *priv);
  84 void hibmc_fbdev_fini(struct hibmc_drm_private *priv);
  85
  86 int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
  87                      struct drm_gem_object **obj);
  88 struct hibmc_framebuffer *
  89 hibmc_framebuffer_init(struct drm_device *dev,
  90                        const struct drm_mode_fb_cmd2 *mode_cmd,
  91                        struct drm_gem_object *obj);
  92
  93 int hibmc_mm_init(struct hibmc_drm_private *hibmc);
  94 void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
  95 int hibmc_bo_pin(struct hibmc_bo *bo, u32 pl_flag, u64 *gpu_addr);
  96 int hibmc_bo_unpin(struct hibmc_bo *bo);
  97 void hibmc_gem_free_object(struct drm_gem_object *obj);
  98 int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
  99                       struct drm_mode_create_dumb *args);
 100 int hibmc_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
 101                            u32 handle, u64 *offset);
 102 int hibmc_mmap(struct file *filp, struct vm_area_struct *vma);
 103
 104 extern const struct drm_mode_config_funcs hibmc_mode_funcs;
 105
 106 #endif