5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
7 * \author Michel Dänzer <michel@tungstengraphics.com>
11 * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com
13 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
14 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
15 * All Rights Reserved.
17 * Permission is hereby granted, free of charge, to any person obtaining a
18 * copy of this software and associated documentation files (the "Software"),
19 * to deal in the Software without restriction, including without limitation
20 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
21 * and/or sell copies of the Software, and to permit persons to whom the
22 * Software is furnished to do so, subject to the following conditions:
24 * The above copyright notice and this permission notice (including the next
25 * paragraph) shall be included in all copies or substantial portions of the
28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
29 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
30 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
31 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
32 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
33 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
34 * OTHER DEALINGS IN THE SOFTWARE.
40 int drm_adddraw(DRM_IOCTL_ARGS)
43 unsigned int irqflags;
47 spin_lock_irqsave(&dev->drw_lock, irqflags);
49 for (i = 0; i < dev->drw_bitfield_length; i++) {
50 u32 bitfield = dev->drw_bitfield[i];
55 for (; j < sizeof(bitfield); j++)
56 if (!(bitfield & (1 << j)))
61 if (i == dev->drw_bitfield_length) {
62 u32 *new_bitfield = drm_realloc(dev->drw_bitfield, i * 4,
63 (i + 1) * 4, DRM_MEM_BUFS);
66 DRM_ERROR("Failed to allocate new drawable bitfield\n");
67 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
68 return DRM_ERR(ENOMEM);
71 if (32 * (i + 1) > dev->drw_info_length) {
72 void *new_info = drm_realloc(dev->drw_info,
73 dev->drw_info_length *
74 sizeof(drm_drawable_info_t*),
76 sizeof(drm_drawable_info_t*),
80 DRM_ERROR("Failed to allocate new drawable info"
83 drm_free(new_bitfield, (i + 1) * 4, DRM_MEM_BUFS);
84 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
85 return DRM_ERR(ENOMEM);
88 dev->drw_info = (drm_drawable_info_t**)new_info;
93 dev->drw_bitfield = new_bitfield;
94 dev->drw_bitfield_length++;
97 dev->drw_bitfield[i] |= 1 << j;
99 draw.handle = i * sizeof(u32) + j;
100 DRM_DEBUG("%d\n", draw.handle);
102 dev->drw_info[draw.handle] = NULL;
104 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
106 DRM_COPY_TO_USER_IOCTL((drm_draw_t __user *)data, draw, sizeof(draw));
112 int drm_rmdraw(DRM_IOCTL_ARGS)
116 unsigned int idx, mod;
117 unsigned int irqflags;
119 DRM_COPY_FROM_USER_IOCTL(draw, (drm_draw_t __user *) data,
122 idx = draw.handle / 32;
123 mod = draw.handle % 32;
125 spin_lock_irqsave(&dev->drw_lock, irqflags);
127 if (idx >= dev->drw_bitfield_length ||
128 !(dev->drw_bitfield[idx] & (1 << mod))) {
129 DRM_DEBUG("No such drawable %d\n", draw.handle);
130 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
134 dev->drw_bitfield[idx] &= ~(1 << mod);
136 if (idx == (dev->drw_bitfield_length - 1)) {
137 while (idx >= 0 && !dev->drw_bitfield[idx])
140 if (idx != draw.handle / 32) {
141 u32 *new_bitfield = drm_realloc(dev->drw_bitfield,
142 dev->drw_bitfield_length * 4,
146 if (new_bitfield || idx == -1) {
147 dev->drw_bitfield = new_bitfield;
148 dev->drw_bitfield_length = idx + 1;
153 if (32 * dev->drw_bitfield_length < dev->drw_info_length) {
154 void *new_info = drm_realloc(dev->drw_info,
155 dev->drw_info_length *
156 sizeof(drm_drawable_info_t*),
157 32 * dev->drw_bitfield_length *
158 sizeof(drm_drawable_info_t*),
161 if (new_info || !dev->drw_bitfield_length) {
162 dev->drw_info = (drm_drawable_info_t**)new_info;
163 dev->drw_info_length = 32 * dev->drw_bitfield_length;
167 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
172 int drm_update_drawable_info(DRM_IOCTL_ARGS) {
174 drm_update_draw_t update;
175 unsigned int id, idx, mod;
176 unsigned int irqflags;
177 drm_drawable_info_t *info;
180 DRM_COPY_FROM_USER_IOCTL(update, (drm_update_draw_t __user *) data,
187 spin_lock_irqsave(&dev->drw_lock, irqflags);
189 if (idx >= dev->drw_bitfield_length ||
190 !(dev->drw_bitfield[idx] & (1 << mod))) {
191 DRM_ERROR("No such drawable %d\n", update.handle);
192 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
193 return DRM_ERR(EINVAL);
196 info = dev->drw_info[id];
199 info = drm_calloc(1, sizeof(drm_drawable_info_t), DRM_MEM_BUFS);
202 DRM_ERROR("Failed to allocate drawable info memory\n");
203 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
204 return DRM_ERR(ENOMEM);
207 dev->drw_info[id] = info;
210 switch (update.type) {
211 case DRM_DRAWABLE_CLIPRECTS:
212 new_data = drm_alloc(update.num * sizeof(drm_clip_rect_t),
216 DRM_ERROR("Failed to allocate cliprect memory\n");
217 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
218 return DRM_ERR(ENOMEM);
221 if (DRM_COPY_FROM_USER(new_data,
222 (drm_clip_rect_t __user *)
223 (unsigned long)update.data,
224 update.num * sizeof(drm_clip_rect_t))) {
225 DRM_ERROR("Failed to copy cliprects from userspace\n");
226 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
227 return DRM_ERR(EFAULT);
230 drm_free(info->rects, info->num_rects * sizeof(drm_clip_rect_t),
233 info->rects = new_data;
234 info->num_rects = update.num;
238 spin_unlock_irqrestore(&dev->drw_lock, irqflags);
244 * Caller must hold the drawable spinlock!
246 drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id) {
247 unsigned int idx = id / 32, mod = id % 32;
249 if (idx >= dev->drw_bitfield_length ||
250 !(dev->drw_bitfield[idx] & (1 << mod))) {
251 DRM_DEBUG("No such drawable %d\n", id);
255 return dev->drw_info[id];