Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /** |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 2 | * \file drm_drawable.c |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * IOCTLs for drawables |
| 4 | * |
| 5 | * \author Rickard E. (Rik) Faith <faith@valinux.com> |
| 6 | * \author Gareth Hughes <gareth@valinux.com> |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 7 | * \author Michel Dänzer <michel@tungstengraphics.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com |
| 12 | * |
| 13 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
| 14 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 15 | * Copyright 2006 Tungsten Graphics, Inc., Bismarck, North Dakota. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * All Rights Reserved. |
| 17 | * |
| 18 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 19 | * copy of this software and associated documentation files (the "Software"), |
| 20 | * to deal in the Software without restriction, including without limitation |
| 21 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 22 | * and/or sell copies of the Software, and to permit persons to whom the |
| 23 | * Software is furnished to do so, subject to the following conditions: |
| 24 | * |
| 25 | * The above copyright notice and this permission notice (including the next |
| 26 | * paragraph) shall be included in all copies or substantial portions of the |
| 27 | * Software. |
| 28 | * |
| 29 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 30 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 31 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 32 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 33 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 34 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 35 | * OTHER DEALINGS IN THE SOFTWARE. |
| 36 | */ |
| 37 | |
| 38 | #include "drmP.h" |
| 39 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 40 | /** |
| 41 | * Allocate drawable ID and memory to store information about it. |
| 42 | */ |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 43 | int drm_adddraw(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | { |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 45 | DRM_DEVICE; |
| 46 | unsigned long irqflags; |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 47 | struct drm_draw draw; |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 48 | int new_id = 0; |
| 49 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 51 | again: |
| 52 | if (idr_pre_get(&dev->drw_idr, GFP_KERNEL) == 0) { |
| 53 | DRM_ERROR("Out of memory expanding drawable idr\n"); |
| 54 | return -ENOMEM; |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 55 | } |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 56 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 57 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 58 | ret = idr_get_new_above(&dev->drw_idr, NULL, 1, &new_id); |
| 59 | if (ret == -EAGAIN) { |
| 60 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
| 61 | goto again; |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 62 | } |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 63 | |
| 64 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
| 65 | |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 66 | draw.handle = new_id; |
| 67 | |
| 68 | DRM_DEBUG("%d\n", draw.handle); |
| 69 | |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 70 | DRM_COPY_TO_USER_IOCTL((struct drm_draw __user *)data, draw, sizeof(draw)); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | return 0; |
| 73 | } |
| 74 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 75 | /** |
| 76 | * Free drawable ID and memory to store information about it. |
| 77 | */ |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 78 | int drm_rmdraw(DRM_IOCTL_ARGS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 80 | DRM_DEVICE; |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 81 | struct drm_draw draw; |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 82 | unsigned long irqflags; |
| 83 | |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 84 | DRM_COPY_FROM_USER_IOCTL(draw, (struct drm_draw __user *) data, |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 85 | sizeof(draw)); |
| 86 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 87 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 88 | |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 89 | drm_free(drm_get_drawable_info(dev, draw.handle), |
| 90 | sizeof(struct drm_drawable_info), DRM_MEM_BUFS); |
| 91 | |
| 92 | idr_remove(&dev->drw_idr, draw.handle); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 93 | |
| 94 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 95 | DRM_DEBUG("%d\n", draw.handle); |
| 96 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | } |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 98 | |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 99 | int drm_update_drawable_info(DRM_IOCTL_ARGS) |
| 100 | { |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 101 | DRM_DEVICE; |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 102 | struct drm_update_draw update; |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 103 | unsigned long irqflags; |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 104 | struct drm_clip_rect *rects; |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 105 | struct drm_drawable_info *info; |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 106 | int err; |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 107 | |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 108 | DRM_COPY_FROM_USER_IOCTL(update, (struct drm_update_draw __user *) data, |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 109 | sizeof(update)); |
| 110 | |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 111 | info = idr_find(&dev->drw_idr, update.handle); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 112 | if (!info) { |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 113 | info = drm_calloc(1, sizeof(*info), DRM_MEM_BUFS); |
| 114 | if (!info) |
| 115 | return -ENOMEM; |
| 116 | if (IS_ERR(idr_replace(&dev->drw_idr, info, update.handle))) { |
| 117 | DRM_ERROR("No such drawable %d\n", update.handle); |
| 118 | drm_free(info, sizeof(*info), DRM_MEM_BUFS); |
| 119 | return -EINVAL; |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 120 | } |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | switch (update.type) { |
| 124 | case DRM_DRAWABLE_CLIPRECTS: |
| 125 | if (update.num != info->num_rects) { |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 126 | rects = drm_alloc(update.num * sizeof(struct drm_clip_rect), |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 127 | DRM_MEM_BUFS); |
| 128 | } else |
| 129 | rects = info->rects; |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 130 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 131 | if (update.num && !rects) { |
| 132 | DRM_ERROR("Failed to allocate cliprect memory\n"); |
| 133 | err = DRM_ERR(ENOMEM); |
| 134 | goto error; |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 135 | } |
| 136 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 137 | if (update.num && DRM_COPY_FROM_USER(rects, |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 138 | (struct drm_clip_rect __user *) |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 139 | (unsigned long)update.data, |
| 140 | update.num * |
| 141 | sizeof(*rects))) { |
| 142 | DRM_ERROR("Failed to copy cliprects from userspace\n"); |
| 143 | err = DRM_ERR(EFAULT); |
| 144 | goto error; |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 145 | } |
| 146 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 147 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
| 148 | |
| 149 | if (rects != info->rects) { |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 150 | drm_free(info->rects, info->num_rects * |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 151 | sizeof(struct drm_clip_rect), DRM_MEM_BUFS); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 152 | } |
| 153 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 154 | info->rects = rects; |
| 155 | info->num_rects = update.num; |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 156 | |
| 157 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
| 158 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 159 | DRM_DEBUG("Updated %d cliprects for drawable %d\n", |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 160 | info->num_rects, update.handle); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 161 | break; |
| 162 | default: |
| 163 | DRM_ERROR("Invalid update type %d\n", update.type); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 164 | return DRM_ERR(EINVAL); |
| 165 | } |
| 166 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 167 | return 0; |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 168 | |
| 169 | error: |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 170 | if (rects != info->rects) |
| 171 | drm_free(rects, update.num * sizeof(struct drm_clip_rect), |
| 172 | DRM_MEM_BUFS); |
=?utf-8?q?Michel_D=C3=A4nzer?= | b03ed6f | 2006-10-24 23:18:49 +1000 | [diff] [blame] | 173 | |
| 174 | return err; |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Caller must hold the drawable spinlock! |
| 179 | */ |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 180 | struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev, drm_drawable_t id) |
| 181 | { |
| 182 | return idr_find(&dev->drw_idr, id); |
=?utf-8?q?Michel_D=C3=A4nzer?= | bea5679 | 2006-10-24 23:04:19 +1000 | [diff] [blame] | 183 | } |
| 184 | EXPORT_SYMBOL(drm_get_drawable_info); |
Dave Airlie | d4e2cbe | 2007-07-17 10:55:47 +1000 | [diff] [blame^] | 185 | |
| 186 | static int drm_drawable_free(int idr, void *p, void *data) |
| 187 | { |
| 188 | struct drm_drawable_info *info = p; |
| 189 | |
| 190 | if (info) { |
| 191 | drm_free(info->rects, info->num_rects * |
| 192 | sizeof(struct drm_clip_rect), DRM_MEM_BUFS); |
| 193 | drm_free(info, sizeof(*info), DRM_MEM_BUFS); |
| 194 | } |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | void drm_drawable_free_all(struct drm_device *dev) |
| 200 | { |
| 201 | idr_for_each(&dev->drw_idr, drm_drawable_free, NULL); |
| 202 | idr_remove_all(&dev->drw_idr); |
| 203 | } |