2 * AGPGART driver frontend compatibility ioctls
3 * Copyright (C) 2004 Silicon Graphics, Inc.
4 * Copyright (C) 2002-2003 Dave Jones
5 * Copyright (C) 1999 Jeff Hartmann
6 * Copyright (C) 1999 Precision Insight, Inc.
7 * Copyright (C) 1999 Xi Graphics, Inc.
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
23 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
24 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
25 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 #include <linux/kernel.h>
30 #include <linux/pci.h>
31 #include <linux/agpgart.h>
32 #include <asm/uaccess.h>
34 #include "compat_ioctl.h"
36 static int compat_agpioc_info_wrap(struct agp_file_private *priv, void __user *arg)
38 struct agp_info32 userinfo;
39 struct agp_kern_info kerninfo;
41 agp_copy_info(agp_bridge, &kerninfo);
43 userinfo.version.major = kerninfo.version.major;
44 userinfo.version.minor = kerninfo.version.minor;
45 userinfo.bridge_id = kerninfo.device->vendor |
46 (kerninfo.device->device << 16);
47 userinfo.agp_mode = kerninfo.mode;
48 userinfo.aper_base = (compat_long_t)kerninfo.aper_base;
49 userinfo.aper_size = kerninfo.aper_size;
50 userinfo.pg_total = userinfo.pg_system = kerninfo.max_memory;
51 userinfo.pg_used = kerninfo.current_memory;
53 if (copy_to_user(arg, &userinfo, sizeof(userinfo)))
59 static int compat_agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
61 struct agp_region32 ureserve;
62 struct agp_region kreserve;
63 struct agp_client *client;
64 struct agp_file_private *client_priv;
67 if (copy_from_user(&ureserve, arg, sizeof(ureserve)))
70 if ((unsigned) ureserve.seg_count >= ~0U/sizeof(struct agp_segment32))
73 kreserve.pid = ureserve.pid;
74 kreserve.seg_count = ureserve.seg_count;
76 client = agp_find_client_by_pid(kreserve.pid);
78 if (kreserve.seg_count == 0) {
80 client_priv = agp_find_private(kreserve.pid);
82 if (client_priv != NULL) {
83 set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
84 set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
87 /* client is already removed */
90 return agp_remove_client(kreserve.pid);
92 struct agp_segment32 *usegment;
93 struct agp_segment *ksegment;
96 if (ureserve.seg_count >= 16384)
99 usegment = kmalloc(sizeof(*usegment) * ureserve.seg_count, GFP_KERNEL);
103 ksegment = kmalloc(sizeof(*ksegment) * kreserve.seg_count, GFP_KERNEL);
109 if (copy_from_user(usegment, (void __user *) ureserve.seg_list,
110 sizeof(*usegment) * ureserve.seg_count)) {
116 for (seg = 0; seg < ureserve.seg_count; seg++) {
117 ksegment[seg].pg_start = usegment[seg].pg_start;
118 ksegment[seg].pg_count = usegment[seg].pg_count;
119 ksegment[seg].prot = usegment[seg].prot;
123 kreserve.seg_list = ksegment;
125 if (client == NULL) {
126 /* Create the client and add the segment */
127 client = agp_create_client(kreserve.pid);
129 if (client == NULL) {
133 client_priv = agp_find_private(kreserve.pid);
135 if (client_priv != NULL) {
136 set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
137 set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
140 return agp_create_segment(client, &kreserve);
142 /* Will never really happen */
146 static int compat_agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg)
148 struct agp_memory *memory;
149 struct agp_allocate32 alloc;
152 if (copy_from_user(&alloc, arg, sizeof(alloc)))
155 memory = agp_allocate_memory_wrap(alloc.pg_count, alloc.type);
160 alloc.key = memory->key;
161 alloc.physical = memory->physical;
163 if (copy_to_user(arg, &alloc, sizeof(alloc))) {
164 agp_free_memory_wrap(memory);
170 static int compat_agpioc_bind_wrap(struct agp_file_private *priv, void __user *arg)
172 struct agp_bind32 bind_info;
173 struct agp_memory *memory;
176 if (copy_from_user(&bind_info, arg, sizeof(bind_info)))
179 memory = agp_find_mem_by_key(bind_info.key);
184 return agp_bind_memory(memory, bind_info.pg_start);
187 static int compat_agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
189 struct agp_memory *memory;
190 struct agp_unbind32 unbind;
193 if (copy_from_user(&unbind, arg, sizeof(unbind)))
196 memory = agp_find_mem_by_key(unbind.key);
201 return agp_unbind_memory(memory);
204 long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
206 struct agp_file_private *curr_priv = file->private_data;
207 int ret_val = -ENOTTY;
209 mutex_lock(&(agp_fe.agp_mutex));
211 if ((agp_fe.current_controller == NULL) &&
212 (cmd != AGPIOC_ACQUIRE32)) {
216 if ((agp_fe.backend_acquired != TRUE) &&
217 (cmd != AGPIOC_ACQUIRE32)) {
221 if (cmd != AGPIOC_ACQUIRE32) {
222 if (!(test_bit(AGP_FF_IS_CONTROLLER, &curr_priv->access_flags))) {
226 /* Use the original pid of the controller,
227 * in case it's threaded */
229 if (agp_fe.current_controller->pid != curr_priv->my_pid) {
237 ret_val = compat_agpioc_info_wrap(curr_priv, (void __user *) arg);
240 case AGPIOC_ACQUIRE32:
241 ret_val = agpioc_acquire_wrap(curr_priv);
244 case AGPIOC_RELEASE32:
245 ret_val = agpioc_release_wrap(curr_priv);
249 ret_val = agpioc_setup_wrap(curr_priv, (void __user *) arg);
252 case AGPIOC_RESERVE32:
253 ret_val = compat_agpioc_reserve_wrap(curr_priv, (void __user *) arg);
256 case AGPIOC_PROTECT32:
257 ret_val = agpioc_protect_wrap(curr_priv);
260 case AGPIOC_ALLOCATE32:
261 ret_val = compat_agpioc_allocate_wrap(curr_priv, (void __user *) arg);
264 case AGPIOC_DEALLOCATE32:
265 ret_val = agpioc_deallocate_wrap(curr_priv, (int) arg);
269 ret_val = compat_agpioc_bind_wrap(curr_priv, (void __user *) arg);
272 case AGPIOC_UNBIND32:
273 ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg);
278 DBG("ioctl returns %d\n", ret_val);
279 mutex_unlock(&(agp_fe.agp_mutex));