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>
32 #include <linux/agpgart.h>
33 #include <asm/uaccess.h>
35 #include "compat_ioctl.h"
37 static int compat_agpioc_info_wrap(struct agp_file_private *priv, void __user *arg)
39 struct agp_info32 userinfo;
40 struct agp_kern_info kerninfo;
42 agp_copy_info(agp_bridge, &kerninfo);
44 userinfo.version.major = kerninfo.version.major;
45 userinfo.version.minor = kerninfo.version.minor;
46 userinfo.bridge_id = kerninfo.device->vendor |
47 (kerninfo.device->device << 16);
48 userinfo.agp_mode = kerninfo.mode;
49 userinfo.aper_base = (compat_long_t)kerninfo.aper_base;
50 userinfo.aper_size = kerninfo.aper_size;
51 userinfo.pg_total = userinfo.pg_system = kerninfo.max_memory;
52 userinfo.pg_used = kerninfo.current_memory;
54 if (copy_to_user(arg, &userinfo, sizeof(userinfo)))
60 static int compat_agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
62 struct agp_region32 ureserve;
63 struct agp_region kreserve;
64 struct agp_client *client;
65 struct agp_file_private *client_priv;
68 if (copy_from_user(&ureserve, arg, sizeof(ureserve)))
71 if ((unsigned) ureserve.seg_count >= ~0U/sizeof(struct agp_segment32))
74 kreserve.pid = ureserve.pid;
75 kreserve.seg_count = ureserve.seg_count;
77 client = agp_find_client_by_pid(kreserve.pid);
79 if (kreserve.seg_count == 0) {
81 client_priv = agp_find_private(kreserve.pid);
83 if (client_priv != NULL) {
84 set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
85 set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
88 /* client is already removed */
91 return agp_remove_client(kreserve.pid);
93 struct agp_segment32 *usegment;
94 struct agp_segment *ksegment;
97 if (ureserve.seg_count >= 16384)
100 usegment = kmalloc(sizeof(*usegment) * ureserve.seg_count, GFP_KERNEL);
104 ksegment = kmalloc(sizeof(*ksegment) * kreserve.seg_count, GFP_KERNEL);
110 if (copy_from_user(usegment, (void __user *) ureserve.seg_list,
111 sizeof(*usegment) * ureserve.seg_count)) {
117 for (seg = 0; seg < ureserve.seg_count; seg++) {
118 ksegment[seg].pg_start = usegment[seg].pg_start;
119 ksegment[seg].pg_count = usegment[seg].pg_count;
120 ksegment[seg].prot = usegment[seg].prot;
124 kreserve.seg_list = ksegment;
126 if (client == NULL) {
127 /* Create the client and add the segment */
128 client = agp_create_client(kreserve.pid);
130 if (client == NULL) {
134 client_priv = agp_find_private(kreserve.pid);
136 if (client_priv != NULL) {
137 set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
138 set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
141 return agp_create_segment(client, &kreserve);
143 /* Will never really happen */
147 static int compat_agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg)
149 struct agp_memory *memory;
150 struct agp_allocate32 alloc;
153 if (copy_from_user(&alloc, arg, sizeof(alloc)))
156 memory = agp_allocate_memory_wrap(alloc.pg_count, alloc.type);
161 alloc.key = memory->key;
162 alloc.physical = memory->physical;
164 if (copy_to_user(arg, &alloc, sizeof(alloc))) {
165 agp_free_memory_wrap(memory);
171 static int compat_agpioc_bind_wrap(struct agp_file_private *priv, void __user *arg)
173 struct agp_bind32 bind_info;
174 struct agp_memory *memory;
177 if (copy_from_user(&bind_info, arg, sizeof(bind_info)))
180 memory = agp_find_mem_by_key(bind_info.key);
185 return agp_bind_memory(memory, bind_info.pg_start);
188 static int compat_agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
190 struct agp_memory *memory;
191 struct agp_unbind32 unbind;
194 if (copy_from_user(&unbind, arg, sizeof(unbind)))
197 memory = agp_find_mem_by_key(unbind.key);
202 return agp_unbind_memory(memory);
205 long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
207 struct agp_file_private *curr_priv = file->private_data;
208 int ret_val = -ENOTTY;
210 mutex_lock(&(agp_fe.agp_mutex));
212 if ((agp_fe.current_controller == NULL) &&
213 (cmd != AGPIOC_ACQUIRE32)) {
217 if ((agp_fe.backend_acquired != TRUE) &&
218 (cmd != AGPIOC_ACQUIRE32)) {
222 if (cmd != AGPIOC_ACQUIRE32) {
223 if (!(test_bit(AGP_FF_IS_CONTROLLER, &curr_priv->access_flags))) {
227 /* Use the original pid of the controller,
228 * in case it's threaded */
230 if (agp_fe.current_controller->pid != curr_priv->my_pid) {
238 ret_val = compat_agpioc_info_wrap(curr_priv, (void __user *) arg);
241 case AGPIOC_ACQUIRE32:
242 ret_val = agpioc_acquire_wrap(curr_priv);
245 case AGPIOC_RELEASE32:
246 ret_val = agpioc_release_wrap(curr_priv);
250 ret_val = agpioc_setup_wrap(curr_priv, (void __user *) arg);
253 case AGPIOC_RESERVE32:
254 ret_val = compat_agpioc_reserve_wrap(curr_priv, (void __user *) arg);
257 case AGPIOC_PROTECT32:
258 ret_val = agpioc_protect_wrap(curr_priv);
261 case AGPIOC_ALLOCATE32:
262 ret_val = compat_agpioc_allocate_wrap(curr_priv, (void __user *) arg);
265 case AGPIOC_DEALLOCATE32:
266 ret_val = agpioc_deallocate_wrap(curr_priv, (int) arg);
270 ret_val = compat_agpioc_bind_wrap(curr_priv, (void __user *) arg);
273 case AGPIOC_UNBIND32:
274 ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg);
279 DBG("ioctl returns %d\n", ret_val);
280 mutex_unlock(&(agp_fe.agp_mutex));