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