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