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
  88 struct module;
  89
  90 struct device_node;
  91 struct videomode;
  92 struct reservation_object;
  93 struct dma_buf_attachment;
  94
  95 struct pci_dev;
  96 struct 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  */
 116 static 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
 126 static __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 */
 146 static __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