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0316fe83 ZM |
1 | /* |
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. | |
8 | * | |
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: | |
15 | * | |
16 | * The above copyright notice and this permission notice shall be included | |
17 | * in all copies or substantial portions of the Software. | |
18 | * | |
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. | |
26 | * | |
27 | */ | |
28 | ||
29 | #include <linux/kernel.h> | |
30 | #include <linux/pci.h> | |
4e950f6f | 31 | #include <linux/fs.h> |
0316fe83 | 32 | #include <linux/agpgart.h> |
5a0e3ad6 | 33 | #include <linux/slab.h> |
7c0f6ba6 | 34 | #include <linux/uaccess.h> |
0316fe83 ZM |
35 | #include "agp.h" |
36 | #include "compat_ioctl.h" | |
37 | ||
38 | static int compat_agpioc_info_wrap(struct agp_file_private *priv, void __user *arg) | |
39 | { | |
40 | struct agp_info32 userinfo; | |
41 | struct agp_kern_info kerninfo; | |
42 | ||
43 | agp_copy_info(agp_bridge, &kerninfo); | |
44 | ||
45 | userinfo.version.major = kerninfo.version.major; | |
46 | userinfo.version.minor = kerninfo.version.minor; | |
47 | userinfo.bridge_id = kerninfo.device->vendor | | |
48 | (kerninfo.device->device << 16); | |
49 | userinfo.agp_mode = kerninfo.mode; | |
50 | userinfo.aper_base = (compat_long_t)kerninfo.aper_base; | |
51 | userinfo.aper_size = kerninfo.aper_size; | |
52 | userinfo.pg_total = userinfo.pg_system = kerninfo.max_memory; | |
53 | userinfo.pg_used = kerninfo.current_memory; | |
54 | ||
55 | if (copy_to_user(arg, &userinfo, sizeof(userinfo))) | |
56 | return -EFAULT; | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | static int compat_agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg) | |
62 | { | |
63 | struct agp_region32 ureserve; | |
64 | struct agp_region kreserve; | |
65 | struct agp_client *client; | |
66 | struct agp_file_private *client_priv; | |
67 | ||
68 | DBG(""); | |
69 | if (copy_from_user(&ureserve, arg, sizeof(ureserve))) | |
70 | return -EFAULT; | |
71 | ||
72 | if ((unsigned) ureserve.seg_count >= ~0U/sizeof(struct agp_segment32)) | |
73 | return -EFAULT; | |
74 | ||
75 | kreserve.pid = ureserve.pid; | |
76 | kreserve.seg_count = ureserve.seg_count; | |
77 | ||
78 | client = agp_find_client_by_pid(kreserve.pid); | |
79 | ||
80 | if (kreserve.seg_count == 0) { | |
81 | /* remove a client */ | |
82 | client_priv = agp_find_private(kreserve.pid); | |
83 | ||
84 | if (client_priv != NULL) { | |
85 | set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags); | |
86 | set_bit(AGP_FF_IS_VALID, &client_priv->access_flags); | |
87 | } | |
88 | if (client == NULL) { | |
89 | /* client is already removed */ | |
90 | return 0; | |
91 | } | |
92 | return agp_remove_client(kreserve.pid); | |
93 | } else { | |
94 | struct agp_segment32 *usegment; | |
95 | struct agp_segment *ksegment; | |
96 | int seg; | |
97 | ||
98 | if (ureserve.seg_count >= 16384) | |
99 | return -EINVAL; | |
100 | ||
101 | usegment = kmalloc(sizeof(*usegment) * ureserve.seg_count, GFP_KERNEL); | |
102 | if (!usegment) | |
103 | return -ENOMEM; | |
104 | ||
105 | ksegment = kmalloc(sizeof(*ksegment) * kreserve.seg_count, GFP_KERNEL); | |
106 | if (!ksegment) { | |
107 | kfree(usegment); | |
108 | return -ENOMEM; | |
109 | } | |
110 | ||
111 | if (copy_from_user(usegment, (void __user *) ureserve.seg_list, | |
112 | sizeof(*usegment) * ureserve.seg_count)) { | |
113 | kfree(usegment); | |
114 | kfree(ksegment); | |
115 | return -EFAULT; | |
116 | } | |
117 | ||
118 | for (seg = 0; seg < ureserve.seg_count; seg++) { | |
119 | ksegment[seg].pg_start = usegment[seg].pg_start; | |
120 | ksegment[seg].pg_count = usegment[seg].pg_count; | |
121 | ksegment[seg].prot = usegment[seg].prot; | |
122 | } | |
123 | ||
124 | kfree(usegment); | |
125 | kreserve.seg_list = ksegment; | |
126 | ||
127 | if (client == NULL) { | |
128 | /* Create the client and add the segment */ | |
129 | client = agp_create_client(kreserve.pid); | |
130 | ||
131 | if (client == NULL) { | |
132 | kfree(ksegment); | |
133 | return -ENOMEM; | |
134 | } | |
135 | client_priv = agp_find_private(kreserve.pid); | |
136 | ||
137 | if (client_priv != NULL) { | |
138 | set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags); | |
139 | set_bit(AGP_FF_IS_VALID, &client_priv->access_flags); | |
140 | } | |
141 | } | |
142 | return agp_create_segment(client, &kreserve); | |
143 | } | |
144 | /* Will never really happen */ | |
145 | return -EINVAL; | |
146 | } | |
147 | ||
148 | static int compat_agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg) | |
149 | { | |
150 | struct agp_memory *memory; | |
151 | struct agp_allocate32 alloc; | |
152 | ||
153 | DBG(""); | |
154 | if (copy_from_user(&alloc, arg, sizeof(alloc))) | |
155 | return -EFAULT; | |
156 | ||
157 | memory = agp_allocate_memory_wrap(alloc.pg_count, alloc.type); | |
158 | ||
159 | if (memory == NULL) | |
160 | return -ENOMEM; | |
161 | ||
162 | alloc.key = memory->key; | |
163 | alloc.physical = memory->physical; | |
164 | ||
165 | if (copy_to_user(arg, &alloc, sizeof(alloc))) { | |
166 | agp_free_memory_wrap(memory); | |
167 | return -EFAULT; | |
168 | } | |
169 | return 0; | |
170 | } | |
171 | ||
172 | static int compat_agpioc_bind_wrap(struct agp_file_private *priv, void __user *arg) | |
173 | { | |
174 | struct agp_bind32 bind_info; | |
175 | struct agp_memory *memory; | |
176 | ||
177 | DBG(""); | |
178 | if (copy_from_user(&bind_info, arg, sizeof(bind_info))) | |
179 | return -EFAULT; | |
180 | ||
181 | memory = agp_find_mem_by_key(bind_info.key); | |
182 | ||
183 | if (memory == NULL) | |
184 | return -EINVAL; | |
185 | ||
186 | return agp_bind_memory(memory, bind_info.pg_start); | |
187 | } | |
188 | ||
189 | static int compat_agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg) | |
190 | { | |
191 | struct agp_memory *memory; | |
192 | struct agp_unbind32 unbind; | |
193 | ||
194 | DBG(""); | |
195 | if (copy_from_user(&unbind, arg, sizeof(unbind))) | |
196 | return -EFAULT; | |
197 | ||
198 | memory = agp_find_mem_by_key(unbind.key); | |
199 | ||
200 | if (memory == NULL) | |
201 | return -EINVAL; | |
202 | ||
203 | return agp_unbind_memory(memory); | |
204 | } | |
205 | ||
206 | long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
207 | { | |
208 | struct agp_file_private *curr_priv = file->private_data; | |
209 | int ret_val = -ENOTTY; | |
210 | ||
211 | mutex_lock(&(agp_fe.agp_mutex)); | |
212 | ||
213 | if ((agp_fe.current_controller == NULL) && | |
214 | (cmd != AGPIOC_ACQUIRE32)) { | |
215 | ret_val = -EINVAL; | |
216 | goto ioctl_out; | |
217 | } | |
9516b030 | 218 | if ((agp_fe.backend_acquired != true) && |
0316fe83 ZM |
219 | (cmd != AGPIOC_ACQUIRE32)) { |
220 | ret_val = -EBUSY; | |
221 | goto ioctl_out; | |
222 | } | |
223 | if (cmd != AGPIOC_ACQUIRE32) { | |
224 | if (!(test_bit(AGP_FF_IS_CONTROLLER, &curr_priv->access_flags))) { | |
225 | ret_val = -EPERM; | |
226 | goto ioctl_out; | |
227 | } | |
228 | /* Use the original pid of the controller, | |
229 | * in case it's threaded */ | |
230 | ||
231 | if (agp_fe.current_controller->pid != curr_priv->my_pid) { | |
232 | ret_val = -EBUSY; | |
233 | goto ioctl_out; | |
234 | } | |
235 | } | |
236 | ||
237 | switch (cmd) { | |
238 | case AGPIOC_INFO32: | |
239 | ret_val = compat_agpioc_info_wrap(curr_priv, (void __user *) arg); | |
240 | break; | |
241 | ||
242 | case AGPIOC_ACQUIRE32: | |
243 | ret_val = agpioc_acquire_wrap(curr_priv); | |
244 | break; | |
245 | ||
246 | case AGPIOC_RELEASE32: | |
247 | ret_val = agpioc_release_wrap(curr_priv); | |
248 | break; | |
249 | ||
250 | case AGPIOC_SETUP32: | |
251 | ret_val = agpioc_setup_wrap(curr_priv, (void __user *) arg); | |
252 | break; | |
253 | ||
254 | case AGPIOC_RESERVE32: | |
255 | ret_val = compat_agpioc_reserve_wrap(curr_priv, (void __user *) arg); | |
256 | break; | |
257 | ||
258 | case AGPIOC_PROTECT32: | |
259 | ret_val = agpioc_protect_wrap(curr_priv); | |
260 | break; | |
261 | ||
262 | case AGPIOC_ALLOCATE32: | |
263 | ret_val = compat_agpioc_allocate_wrap(curr_priv, (void __user *) arg); | |
264 | break; | |
265 | ||
266 | case AGPIOC_DEALLOCATE32: | |
267 | ret_val = agpioc_deallocate_wrap(curr_priv, (int) arg); | |
268 | break; | |
269 | ||
270 | case AGPIOC_BIND32: | |
271 | ret_val = compat_agpioc_bind_wrap(curr_priv, (void __user *) arg); | |
272 | break; | |
273 | ||
274 | case AGPIOC_UNBIND32: | |
275 | ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg); | |
276 | break; | |
a13af4b4 DA |
277 | |
278 | case AGPIOC_CHIPSET_FLUSH32: | |
a13af4b4 | 279 | break; |
0316fe83 ZM |
280 | } |
281 | ||
282 | ioctl_out: | |
283 | DBG("ioctl returns %d\n", ret_val); | |
284 | mutex_unlock(&(agp_fe.agp_mutex)); | |
285 | return ret_val; | |
286 | } | |
287 |