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_IOCTL_H_ 33 #define _DRM_IOCTL_H_ 34 35 #include <linux/types.h> 36 37 #include <asm/ioctl.h> 38 39 struct drm_device; 40 struct drm_file; 41 struct file; 42 43 /** 44 * Ioctl function type. 45 * 46 * \param inode device inode. 47 * \param file_priv DRM file private pointer. 48 * \param cmd command. 49 * \param arg argument. 50 */ 51 typedef int drm_ioctl_t(struct drm_device *dev, void *data, 52 struct drm_file *file_priv); 53 54 typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd, 55 unsigned long arg); 56 57 #define DRM_IOCTL_NR(n) _IOC_NR(n) 58 #define DRM_MAJOR 226 59 60 #define DRM_AUTH 0x1 61 #define DRM_MASTER 0x2 62 #define DRM_ROOT_ONLY 0x4 63 #define DRM_CONTROL_ALLOW 0x8 64 #define DRM_UNLOCKED 0x10 65 #define DRM_RENDER_ALLOW 0x20 66 67 struct drm_ioctl_desc { 68 unsigned int cmd; 69 int flags; 70 drm_ioctl_t *func; 71 const char *name; 72 }; 73 74 /** 75 * Creates a driver or general drm_ioctl_desc array entry for the given 76 * ioctl, for use by drm_ioctl(). 77 */ 78 79 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \ 80 [DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \ 81 .cmd = DRM_IOCTL_##ioctl, \ 82 .func = _func, \ 83 .flags = _flags, \ 84 .name = #ioctl \ 85 } 86 87 int drm_ioctl_permit(u32 flags, struct drm_file *file_priv); 88 long drm_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); 89 #ifdef CONFIG_COMPAT 90 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); 91 #else 92 /* Let drm_compat_ioctl be assigned to .compat_ioctl unconditionally */ 93 #define drm_compat_ioctl NULL 94 #endif 95 bool drm_ioctl_flags(unsigned int nr, unsigned int *flags); 96 97 int drm_noop(struct drm_device *dev, void *data, 98 struct drm_file *file_priv); 99 int drm_invalid_op(struct drm_device *dev, void *data, 100 struct drm_file *file_priv); 101 102 #endif /* _DRM_IOCTL_H_ */ 103