/* * \file drm_ioc32.c * * 32-bit ioctl compatibility routines for the DRM. * * \author Paul Mackerras <[email protected]> * * Copyright (C) Paul Mackerras 2005. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include <linux/compat.h> #include <linux/ratelimit.h> #include <linux/export.h> #include <drm/drm_device.h> #include <drm/drm_file.h> #include <drm/drm_print.h> #include "drm_crtc_internal.h" #include "drm_internal.h" #define DRM_IOCTL_VERSION32 … #define DRM_IOCTL_GET_UNIQUE32 … #define DRM_IOCTL_GET_MAP32 … #define DRM_IOCTL_GET_CLIENT32 … #define DRM_IOCTL_GET_STATS32 … #define DRM_IOCTL_SET_UNIQUE32 … #define DRM_IOCTL_ADD_MAP32 … #define DRM_IOCTL_ADD_BUFS32 … #define DRM_IOCTL_MARK_BUFS32 … #define DRM_IOCTL_INFO_BUFS32 … #define DRM_IOCTL_MAP_BUFS32 … #define DRM_IOCTL_FREE_BUFS32 … #define DRM_IOCTL_RM_MAP32 … #define DRM_IOCTL_SET_SAREA_CTX32 … #define DRM_IOCTL_GET_SAREA_CTX32 … #define DRM_IOCTL_RES_CTX32 … #define DRM_IOCTL_DMA32 … #define DRM_IOCTL_AGP_ENABLE32 … #define DRM_IOCTL_AGP_INFO32 … #define DRM_IOCTL_AGP_ALLOC32 … #define DRM_IOCTL_AGP_FREE32 … #define DRM_IOCTL_AGP_BIND32 … #define DRM_IOCTL_AGP_UNBIND32 … #define DRM_IOCTL_SG_ALLOC32 … #define DRM_IOCTL_SG_FREE32 … #define DRM_IOCTL_UPDATE_DRAW32 … #define DRM_IOCTL_WAIT_VBLANK32 … #define DRM_IOCTL_MODE_ADDFB232 … drm_version32_t; static int compat_drm_version(struct file *file, unsigned int cmd, unsigned long arg) { … } drm_unique32_t; static int compat_drm_getunique(struct file *file, unsigned int cmd, unsigned long arg) { … } static int compat_drm_setunique(struct file *file, unsigned int cmd, unsigned long arg) { … } drm_client32_t; static int compat_drm_getclient(struct file *file, unsigned int cmd, unsigned long arg) { … } drm_stats32_t; static int compat_drm_getstats(struct file *file, unsigned int cmd, unsigned long arg) { … } #if defined(CONFIG_X86) drm_update_draw32_t; static int compat_drm_update_draw(struct file *file, unsigned int cmd, unsigned long arg) { … } #endif struct drm_wait_vblank_request32 { … }; struct drm_wait_vblank_reply32 { … }; drm_wait_vblank32_t; static int compat_drm_wait_vblank(struct file *file, unsigned int cmd, unsigned long arg) { … } #if defined(CONFIG_X86) drm_mode_fb_cmd232_t; static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd, unsigned long arg) { … } #endif static struct { … } drm_compat_ioctls[] = …; /** * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers * @filp: file this ioctl is called on * @cmd: ioctl cmd number * @arg: user argument * * Compatibility handler for 32 bit userspace running on 64 kernels. All actual * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as * appropriate. Note that this only handles DRM core IOCTLs, if the driver has * botched IOCTL itself, it must handle those by wrapping this function. * * Returns: * Zero on success, negative error code on failure. */ long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { … } EXPORT_SYMBOL(…);
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