LXR linux/include/drm/drmP.h

   1/*
   2 * Internal Header for the Direct Rendering Manager
   3 *
   4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   6 * Copyright (c) 2009-2010, Code Aurora Forum.
   7 * All rights reserved.
   8 *
   9 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
  10 * Author: Gareth Hughes <gareth@valinux.com>
  11 *
  12 * Permission is hereby granted, free of charge, to any person obtaining a
  13 * copy of this software and associated documentation files (the "Software"),
  14 * to deal in the Software without restriction, including without limitation
  15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  16 * and/or sell copies of the Software, and to permit persons to whom the
  17 * Software is furnished to do so, subject to the following conditions:
  18 *
  19 * The above copyright notice and this permission notice (including the next
  20 * paragraph) shall be included in all copies or substantial portions of the
  21 * Software.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  26 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  27 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  28 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  29 * OTHER DEALINGS IN THE SOFTWARE.
  30 */
  31
  32#ifndef _DRM_P_H_
  33#define _DRM_P_H_
  34
  35#include <linux/agp_backend.h>
  36#include <linux/cdev.h>
  37#include <linux/dma-mapping.h>
  38#include <linux/file.h>
  39#include <linux/fs.h>
  40#include <linux/highmem.h>
  41#include <linux/idr.h>
  42#include <linux/init.h>
  43#include <linux/io.h>
  44#include <linux/jiffies.h>
  45#include <linux/kernel.h>
  46#include <linux/kref.h>
  47#include <linux/miscdevice.h>
  48#include <linux/mm.h>
  49#include <linux/mutex.h>
  50#include <linux/platform_device.h>
  51#include <linux/poll.h>
  52#include <linux/ratelimit.h>
  53#include <linux/sched.h>
  54#include <linux/slab.h>
  55#include <linux/types.h>
  56#include <linux/vmalloc.h>
  57#include <linux/workqueue.h>
  58#include <linux/dma-fence.h>
  59#include <linux/module.h>
  60
  61#include <asm/mman.h>
  62#include <asm/pgalloc.h>
  63#include <linux/uaccess.h>
  64
  65#include <uapi/drm/drm.h>
  66#include <uapi/drm/drm_mode.h>
  67
  68#include <drm/drm_agpsupport.h>
  69#include <drm/drm_crtc.h>
  70#include <drm/drm_fourcc.h>
  71#include <drm/drm_global.h>
  72#include <drm/drm_hashtab.h>
  73#include <drm/drm_mm.h>
  74#include <drm/drm_os_linux.h>
  75#include <drm/drm_sarea.h>
  76#include <drm/drm_drv.h>
  77#include <drm/drm_prime.h>
  78#include <drm/drm_print.h>
  79#include <drm/drm_pci.h>
  80#include <drm/drm_file.h>
  81#include <drm/drm_debugfs.h>
  82#include <drm/drm_ioctl.h>
  83#include <drm/drm_sysfs.h>
  84#include <drm/drm_vblank.h>
  85#include <drm/drm_irq.h>
  86#include <drm/drm_device.h>
  87
  88struct module;
  89
  90struct device_node;
  91struct videomode;
  92struct reservation_object;
  93struct dma_buf_attachment;
  94
  95struct pci_dev;
  96struct pci_controller;
  97
  98/***********************************************************************/
  99/** \name DRM template customization defaults */
 100/*@{*/
 101
 102/***********************************************************************/
 103/** \name Internal types and structures */
 104/*@{*/
 105
 106#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
 107
 108/**
 109 * drm_drv_uses_atomic_modeset - check if the driver implements
 110 * atomic_commit()
 111 * @dev: DRM device
 112 *
 113 * This check is useful if drivers do not have DRIVER_ATOMIC set but
 114 * have atomic modesetting internally implemented.
 115 */
 116static inline bool drm_drv_uses_atomic_modeset(struct drm_device *dev)
 117{
 118        return dev->mode_config.funcs->atomic_commit != NULL;
 119}
 120
 121#define DRM_SWITCH_POWER_ON 0
 122#define DRM_SWITCH_POWER_OFF 1
 123#define DRM_SWITCH_POWER_CHANGING 2
 124#define DRM_SWITCH_POWER_DYNAMIC_OFF 3
 125
 126static __inline__ int drm_core_check_feature(struct drm_device *dev,
 127                                             int feature)
 128{
 129        return ((dev->driver->driver_features & feature) ? 1 : 0);
 130}
 131
 132/******************************************************************/
 133/** \name Internal function definitions */
 134/*@{*/
 135
 136                                /* Driver support (drm_drv.h) */
 137
 138/*
 139 * These are exported to drivers so that they can implement fencing using
 140 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
 141 */
 142
 143/*@}*/
 144
 145/* returns true if currently okay to sleep */
 146static __inline__ bool drm_can_sleep(void)
 147{
 148        if (in_atomic() || in_dbg_master() || irqs_disabled())
 149                return false;
 150        return true;
 151}
 152
 153/* helper for handling conditionals in various for_each macros */
 154#define for_each_if(condition) if (!(condition)) {} else
 155
 156#endif
 157