LXR linux/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm

   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
  28struct hibmc_framebuffer {
  29        struct drm_framebuffer fb;
  30        struct drm_gem_object *obj;
  31};
  32
  33struct hibmc_fbdev {
  34        struct drm_fb_helper helper;
  35        struct hibmc_framebuffer *fb;
  36        int size;
  37};
  38
  39struct 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
  65struct 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
  74static inline struct hibmc_bo *hibmc_bo(struct ttm_buffer_object *bo)
  75{
  76        return container_of(bo, struct hibmc_bo, bo);
  77}
  78
  79static 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
  84void hibmc_set_power_mode(struct hibmc_drm_private *priv,
  85                          unsigned int power_mode);
  86void hibmc_set_current_gate(struct hibmc_drm_private *priv,
  87                            unsigned int gate);
  88
  89int hibmc_de_init(struct hibmc_drm_private *priv);
  90int hibmc_vdac_init(struct hibmc_drm_private *priv);
  91int hibmc_fbdev_init(struct hibmc_drm_private *priv);
  92void hibmc_fbdev_fini(struct hibmc_drm_private *priv);
  93
  94int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
  95                     struct drm_gem_object **obj);
  96struct hibmc_framebuffer *
  97hibmc_framebuffer_init(struct drm_device *dev,
  98                       const struct drm_mode_fb_cmd2 *mode_cmd,
  99                       struct drm_gem_object *obj);
 100
 101int hibmc_mm_init(struct hibmc_drm_private *hibmc);
 102void hibmc_mm_fini(struct hibmc_drm_private *hibmc);
 103int hibmc_bo_pin(struct hibmc_bo *bo, u32 pl_flag, u64 *gpu_addr);
 104int hibmc_bo_unpin(struct hibmc_bo *bo);
 105void hibmc_gem_free_object(struct drm_gem_object *obj);
 106int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
 107                      struct drm_mode_create_dumb *args);
 108int hibmc_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
 109                           u32 handle, u64 *offset);
 110int hibmc_mmap(struct file *filp, struct vm_area_struct *vma);
 111
 112extern const struct drm_mode_config_funcs hibmc_mode_funcs;
 113
 114#endif
 115