1 /* $NetBSD: i915_gem_userptr.c,v 1.5 2021/12/19 12:10:34 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Taylor R. Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: i915_gem_userptr.c,v 1.5 2021/12/19 12:10:34 riastradh Exp $"); 34 35 #include "i915_drv.h" 36 #include "../dist/drm/i915/gem/i915_gem_ioctls.h" 37 38 #include <linux/nbsd-namespace.h> 39 40 /* 41 * XXX this file is dumb and maybe shouldn't exist; it exists because 42 * riastradh is a lazybones 43 */ 44 45 int 46 i915_gem_init_userptr(struct drm_i915_private *dev_priv) 47 { 48 mutex_init(&dev_priv->mm_lock); 49 hash_init(dev_priv->mm_structs); 50 51 dev_priv->mm.userptr_wq = 52 alloc_workqueue("i915-userptr-acquire", 53 WQ_HIGHPRI | WQ_UNBOUND, 54 0); 55 if (!dev_priv->mm.userptr_wq) 56 return -ENOMEM; 57 58 return 0; 59 } 60 61 void 62 i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv) 63 { 64 destroy_workqueue(dev_priv->mm.userptr_wq); 65 mutex_destroy(&dev_priv->mm_lock); 66 } 67 68 int 69 i915_gem_userptr_ioctl(struct drm_device *dev, void *data, 70 struct drm_file *file) 71 { 72 return -ENODEV; 73 } 74