1145132Sanholt/*- 2145132Sanholt * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. 3145132Sanholt * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. 4145132Sanholt * All Rights Reserved. 5145132Sanholt * 6145132Sanholt * Permission is hereby granted, free of charge, to any person obtaining a 7145132Sanholt * copy of this software and associated documentation files (the "Software"), 8145132Sanholt * to deal in the Software without restriction, including without limitation 9145132Sanholt * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10145132Sanholt * and/or sell copies of the Software, and to permit persons to whom the 11145132Sanholt * Software is furnished to do so, subject to the following conditions: 12145132Sanholt * 13145132Sanholt * The above copyright notice and this permission notice (including the next 14145132Sanholt * paragraph) shall be included in all copies or substantial portions of the 15145132Sanholt * Software. 16145132Sanholt * 17145132Sanholt * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18145132Sanholt * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19145132Sanholt * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20145132Sanholt * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 21145132Sanholt * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 22145132Sanholt * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 23145132Sanholt * OTHER DEALINGS IN THE SOFTWARE. 24145132Sanholt * 25145132Sanholt * Authors: 26145132Sanholt * Rickard E. (Rik) Faith <faith@valinux.com> 27145132Sanholt * Daryll Strauss <daryll@valinux.com> 28145132Sanholt * Gareth Hughes <gareth@valinux.com> 29145132Sanholt * 30145132Sanholt */ 31145132Sanholt 32152909Sanholt#include <sys/cdefs.h> 33152909Sanholt__FBSDID("$FreeBSD$"); 34152909Sanholt 35182080Srnoland/** @file drm_fops.c 36182080Srnoland * Support code for dealing with the file privates associated with each 37182080Srnoland * open of the DRM device. 38182080Srnoland */ 39182080Srnoland 40145132Sanholt#include "dev/drm/drmP.h" 41145132Sanholt 42145132Sanholt/* drm_open_helper is called whenever a process opens /dev/drm. */ 43145132Sanholtint drm_open_helper(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p, 44182080Srnoland struct drm_device *dev) 45145132Sanholt{ 46183573Srnoland struct drm_file *priv; 47145132Sanholt int retcode; 48145132Sanholt 49145132Sanholt if (flags & O_EXCL) 50145132Sanholt return EBUSY; /* No exclusive opens */ 51145132Sanholt dev->flags = flags; 52145132Sanholt 53196465Srnoland DRM_DEBUG("pid = %d, device = %s\n", DRM_CURRENTPID, devtoname(kdev)); 54145132Sanholt 55183833Srnoland priv = malloc(sizeof(*priv), DRM_MEM_FILES, M_NOWAIT | M_ZERO); 56183573Srnoland if (priv == NULL) { 57183573Srnoland return ENOMEM; 58183573Srnoland } 59183573Srnoland 60145132Sanholt DRM_LOCK(); 61183573Srnoland priv->dev = dev; 62183573Srnoland priv->uid = p->td_ucred->cr_svuid; 63183573Srnoland priv->pid = p->td_proc->p_pid; 64183573Srnoland priv->ioctl_count = 0; 65145132Sanholt 66183573Srnoland /* for compatibility root is always authenticated */ 67183573Srnoland priv->authenticated = DRM_SUSER(p); 68145132Sanholt 69183573Srnoland if (dev->driver->open) { 70183573Srnoland /* shared code returns -errno */ 71183573Srnoland retcode = -dev->driver->open(dev, priv); 72183573Srnoland if (retcode != 0) { 73183833Srnoland free(priv, DRM_MEM_FILES); 74183573Srnoland DRM_UNLOCK(); 75183573Srnoland return retcode; 76145132Sanholt } 77183573Srnoland } 78145132Sanholt 79183573Srnoland /* first opener automatically becomes master */ 80183573Srnoland priv->master = TAILQ_EMPTY(&dev->files); 81152909Sanholt 82183573Srnoland TAILQ_INSERT_TAIL(&dev->files, priv, link); 83145132Sanholt DRM_UNLOCK(); 84145132Sanholt kdev->si_drv1 = dev; 85241088Shselasky 86241088Shselasky retcode = devfs_set_cdevpriv(priv, drm_close); 87241088Shselasky if (retcode != 0) 88241088Shselasky drm_close(priv); 89241088Shselasky 90241088Shselasky return (retcode); 91145132Sanholt} 92145132Sanholt 93145132Sanholt 94145132Sanholt/* The drm_read and drm_poll are stubs to prevent spurious errors 95145132Sanholt * on older X Servers (4.3.0 and earlier) */ 96145132Sanholt 97145132Sanholtint drm_read(struct cdev *kdev, struct uio *uio, int ioflag) 98145132Sanholt{ 99145132Sanholt return 0; 100145132Sanholt} 101145132Sanholt 102145132Sanholtint drm_poll(struct cdev *kdev, int events, DRM_STRUCTPROC *p) 103145132Sanholt{ 104145132Sanholt return 0; 105145132Sanholt} 106