Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[linux-2.6.git] / drivers / gpu / drm / radeon / radeon_ioc32.c
1 /**
2  * \file radeon_ioc32.c
3  *
4  * 32-bit ioctl compatibility routines for the Radeon DRM.
5  *
6  * \author Paul Mackerras <paulus@samba.org>
7  *
8  * Copyright (C) Paul Mackerras 2005
9  * All Rights Reserved.
10  *
11  * Permission is hereby granted, free of charge, to any person obtaining a
12  * copy of this software and associated documentation files (the "Software"),
13  * to deal in the Software without restriction, including without limitation
14  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15  * and/or sell copies of the Software, and to permit persons to whom the
16  * Software is furnished to do so, subject to the following conditions:
17  *
18  * The above copyright notice and this permission notice (including the next
19  * paragraph) shall be included in all copies or substantial portions of the
20  * Software.
21  *
22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
25  * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
28  * IN THE SOFTWARE.
29  */
30 #include <linux/compat.h>
31
32 #include "drmP.h"
33 #include "drm.h"
34 #include "radeon_drm.h"
35 #include "radeon_drv.h"
36
37 typedef struct drm_radeon_init32 {
38         int func;
39         u32 sarea_priv_offset;
40         int is_pci;
41         int cp_mode;
42         int gart_size;
43         int ring_size;
44         int usec_timeout;
45
46         unsigned int fb_bpp;
47         unsigned int front_offset, front_pitch;
48         unsigned int back_offset, back_pitch;
49         unsigned int depth_bpp;
50         unsigned int depth_offset, depth_pitch;
51
52         u32 fb_offset;
53         u32 mmio_offset;
54         u32 ring_offset;
55         u32 ring_rptr_offset;
56         u32 buffers_offset;
57         u32 gart_textures_offset;
58 } drm_radeon_init32_t;
59
60 static int compat_radeon_cp_init(struct file *file, unsigned int cmd,
61                                  unsigned long arg)
62 {
63         drm_radeon_init32_t init32;
64         drm_radeon_init_t __user *init;
65
66         if (copy_from_user(&init32, (void __user *)arg, sizeof(init32)))
67                 return -EFAULT;
68
69         init = compat_alloc_user_space(sizeof(*init));
70         if (!access_ok(VERIFY_WRITE, init, sizeof(*init))
71             || __put_user(init32.func, &init->func)
72             || __put_user(init32.sarea_priv_offset, &init->sarea_priv_offset)
73             || __put_user(init32.is_pci, &init->is_pci)
74             || __put_user(init32.cp_mode, &init->cp_mode)
75             || __put_user(init32.gart_size, &init->gart_size)
76             || __put_user(init32.ring_size, &init->ring_size)
77             || __put_user(init32.usec_timeout, &init->usec_timeout)
78             || __put_user(init32.fb_bpp, &init->fb_bpp)
79             || __put_user(init32.front_offset, &init->front_offset)
80             || __put_user(init32.front_pitch, &init->front_pitch)
81             || __put_user(init32.back_offset, &init->back_offset)
82             || __put_user(init32.back_pitch, &init->back_pitch)
83             || __put_user(init32.depth_bpp, &init->depth_bpp)
84             || __put_user(init32.depth_offset, &init->depth_offset)
85             || __put_user(init32.depth_pitch, &init->depth_pitch)
86             || __put_user(init32.fb_offset, &init->fb_offset)
87             || __put_user(init32.mmio_offset, &init->mmio_offset)
88             || __put_user(init32.ring_offset, &init->ring_offset)
89             || __put_user(init32.ring_rptr_offset, &init->ring_rptr_offset)
90             || __put_user(init32.buffers_offset, &init->buffers_offset)
91             || __put_user(init32.gart_textures_offset,
92                           &init->gart_textures_offset))
93                 return -EFAULT;
94
95         return drm_ioctl(file, DRM_IOCTL_RADEON_CP_INIT, (unsigned long)init);
96 }
97
98 typedef struct drm_radeon_clear32 {
99         unsigned int flags;
100         unsigned int clear_color;
101         unsigned int clear_depth;
102         unsigned int color_mask;
103         unsigned int depth_mask;        /* misnamed field:  should be stencil */
104         u32 depth_boxes;
105 } drm_radeon_clear32_t;
106
107 static int compat_radeon_cp_clear(struct file *file, unsigned int cmd,
108                                   unsigned long arg)
109 {
110         drm_radeon_clear32_t clr32;
111         drm_radeon_clear_t __user *clr;
112
113         if (copy_from_user(&clr32, (void __user *)arg, sizeof(clr32)))
114                 return -EFAULT;
115
116         clr = compat_alloc_user_space(sizeof(*clr));
117         if (!access_ok(VERIFY_WRITE, clr, sizeof(*clr))
118             || __put_user(clr32.flags, &clr->flags)
119             || __put_user(clr32.clear_color, &clr->clear_color)
120             || __put_user(clr32.clear_depth, &clr->clear_depth)
121             || __put_user(clr32.color_mask, &clr->color_mask)
122             || __put_user(clr32.depth_mask, &clr->depth_mask)
123             || __put_user((void __user *)(unsigned long)clr32.depth_boxes,
124                           &clr->depth_boxes))
125                 return -EFAULT;
126
127         return drm_ioctl(file, DRM_IOCTL_RADEON_CLEAR, (unsigned long)clr);
128 }
129
130 typedef struct drm_radeon_stipple32 {
131         u32 mask;
132 } drm_radeon_stipple32_t;
133
134 static int compat_radeon_cp_stipple(struct file *file, unsigned int cmd,
135                                     unsigned long arg)
136 {
137         drm_radeon_stipple32_t __user *argp = (void __user *)arg;
138         drm_radeon_stipple_t __user *request;
139         u32 mask;
140
141         if (get_user(mask, &argp->mask))
142                 return -EFAULT;
143
144         request = compat_alloc_user_space(sizeof(*request));
145         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
146             || __put_user((unsigned int __user *)(unsigned long)mask,
147                           &request->mask))
148                 return -EFAULT;
149
150         return drm_ioctl(file, DRM_IOCTL_RADEON_STIPPLE, (unsigned long)request);
151 }
152
153 typedef struct drm_radeon_tex_image32 {
154         unsigned int x, y;      /* Blit coordinates */
155         unsigned int width, height;
156         u32 data;
157 } drm_radeon_tex_image32_t;
158
159 typedef struct drm_radeon_texture32 {
160         unsigned int offset;
161         int pitch;
162         int format;
163         int width;              /* Texture image coordinates */
164         int height;
165         u32 image;
166 } drm_radeon_texture32_t;
167
168 static int compat_radeon_cp_texture(struct file *file, unsigned int cmd,
169                                     unsigned long arg)
170 {
171         drm_radeon_texture32_t req32;
172         drm_radeon_texture_t __user *request;
173         drm_radeon_tex_image32_t img32;
174         drm_radeon_tex_image_t __user *image;
175
176         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
177                 return -EFAULT;
178         if (req32.image == 0)
179                 return -EINVAL;
180         if (copy_from_user(&img32, (void __user *)(unsigned long)req32.image,
181                            sizeof(img32)))
182                 return -EFAULT;
183
184         request = compat_alloc_user_space(sizeof(*request) + sizeof(*image));
185         if (!access_ok(VERIFY_WRITE, request,
186                        sizeof(*request) + sizeof(*image)))
187                 return -EFAULT;
188         image = (drm_radeon_tex_image_t __user *) (request + 1);
189
190         if (__put_user(req32.offset, &request->offset)
191             || __put_user(req32.pitch, &request->pitch)
192             || __put_user(req32.format, &request->format)
193             || __put_user(req32.width, &request->width)
194             || __put_user(req32.height, &request->height)
195             || __put_user(image, &request->image)
196             || __put_user(img32.x, &image->x)
197             || __put_user(img32.y, &image->y)
198             || __put_user(img32.width, &image->width)
199             || __put_user(img32.height, &image->height)
200             || __put_user((const void __user *)(unsigned long)img32.data,
201                           &image->data))
202                 return -EFAULT;
203
204         return drm_ioctl(file, DRM_IOCTL_RADEON_TEXTURE, (unsigned long)request);
205 }
206
207 typedef struct drm_radeon_vertex2_32 {
208         int idx;                /* Index of vertex buffer */
209         int discard;            /* Client finished with buffer? */
210         int nr_states;
211         u32 state;
212         int nr_prims;
213         u32 prim;
214 } drm_radeon_vertex2_32_t;
215
216 static int compat_radeon_cp_vertex2(struct file *file, unsigned int cmd,
217                                     unsigned long arg)
218 {
219         drm_radeon_vertex2_32_t req32;
220         drm_radeon_vertex2_t __user *request;
221
222         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
223                 return -EFAULT;
224
225         request = compat_alloc_user_space(sizeof(*request));
226         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
227             || __put_user(req32.idx, &request->idx)
228             || __put_user(req32.discard, &request->discard)
229             || __put_user(req32.nr_states, &request->nr_states)
230             || __put_user((void __user *)(unsigned long)req32.state,
231                           &request->state)
232             || __put_user(req32.nr_prims, &request->nr_prims)
233             || __put_user((void __user *)(unsigned long)req32.prim,
234                           &request->prim))
235                 return -EFAULT;
236
237         return drm_ioctl(file, DRM_IOCTL_RADEON_VERTEX2, (unsigned long)request);
238 }
239
240 typedef struct drm_radeon_cmd_buffer32 {
241         int bufsz;
242         u32 buf;
243         int nbox;
244         u32 boxes;
245 } drm_radeon_cmd_buffer32_t;
246
247 static int compat_radeon_cp_cmdbuf(struct file *file, unsigned int cmd,
248                                    unsigned long arg)
249 {
250         drm_radeon_cmd_buffer32_t req32;
251         drm_radeon_cmd_buffer_t __user *request;
252
253         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
254                 return -EFAULT;
255
256         request = compat_alloc_user_space(sizeof(*request));
257         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
258             || __put_user(req32.bufsz, &request->bufsz)
259             || __put_user((void __user *)(unsigned long)req32.buf,
260                           &request->buf)
261             || __put_user(req32.nbox, &request->nbox)
262             || __put_user((void __user *)(unsigned long)req32.boxes,
263                           &request->boxes))
264                 return -EFAULT;
265
266         return drm_ioctl(file, DRM_IOCTL_RADEON_CMDBUF, (unsigned long)request);
267 }
268
269 typedef struct drm_radeon_getparam32 {
270         int param;
271         u32 value;
272 } drm_radeon_getparam32_t;
273
274 static int compat_radeon_cp_getparam(struct file *file, unsigned int cmd,
275                                      unsigned long arg)
276 {
277         drm_radeon_getparam32_t req32;
278         drm_radeon_getparam_t __user *request;
279
280         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
281                 return -EFAULT;
282
283         request = compat_alloc_user_space(sizeof(*request));
284         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
285             || __put_user(req32.param, &request->param)
286             || __put_user((void __user *)(unsigned long)req32.value,
287                           &request->value))
288                 return -EFAULT;
289
290         return drm_ioctl(file, DRM_IOCTL_RADEON_GETPARAM, (unsigned long)request);
291 }
292
293 typedef struct drm_radeon_mem_alloc32 {
294         int region;
295         int alignment;
296         int size;
297         u32 region_offset;      /* offset from start of fb or GART */
298 } drm_radeon_mem_alloc32_t;
299
300 static int compat_radeon_mem_alloc(struct file *file, unsigned int cmd,
301                                    unsigned long arg)
302 {
303         drm_radeon_mem_alloc32_t req32;
304         drm_radeon_mem_alloc_t __user *request;
305
306         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
307                 return -EFAULT;
308
309         request = compat_alloc_user_space(sizeof(*request));
310         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
311             || __put_user(req32.region, &request->region)
312             || __put_user(req32.alignment, &request->alignment)
313             || __put_user(req32.size, &request->size)
314             || __put_user((int __user *)(unsigned long)req32.region_offset,
315                           &request->region_offset))
316                 return -EFAULT;
317
318         return drm_ioctl(file, DRM_IOCTL_RADEON_ALLOC, (unsigned long)request);
319 }
320
321 typedef struct drm_radeon_irq_emit32 {
322         u32 irq_seq;
323 } drm_radeon_irq_emit32_t;
324
325 static int compat_radeon_irq_emit(struct file *file, unsigned int cmd,
326                                   unsigned long arg)
327 {
328         drm_radeon_irq_emit32_t req32;
329         drm_radeon_irq_emit_t __user *request;
330
331         if (copy_from_user(&req32, (void __user *)arg, sizeof(req32)))
332                 return -EFAULT;
333
334         request = compat_alloc_user_space(sizeof(*request));
335         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
336             || __put_user((int __user *)(unsigned long)req32.irq_seq,
337                           &request->irq_seq))
338                 return -EFAULT;
339
340         return drm_ioctl(file, DRM_IOCTL_RADEON_IRQ_EMIT, (unsigned long)request);
341 }
342
343 /* The two 64-bit arches where alignof(u64)==4 in 32-bit code */
344 #if defined (CONFIG_X86_64) || defined(CONFIG_IA64)
345 typedef struct drm_radeon_setparam32 {
346         int param;
347         u64 value;
348 } __attribute__((packed)) drm_radeon_setparam32_t;
349
350 static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
351                                      unsigned long arg)
352 {
353         drm_radeon_setparam32_t req32;
354         drm_radeon_setparam_t __user *request;
355
356         if (copy_from_user(&req32, (void __user *) arg, sizeof(req32)))
357                 return -EFAULT;
358
359         request = compat_alloc_user_space(sizeof(*request));
360         if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
361             || __put_user(req32.param, &request->param)
362             || __put_user((void __user *)(unsigned long)req32.value,
363                           &request->value))
364                 return -EFAULT;
365
366         return drm_ioctl(file, DRM_IOCTL_RADEON_SETPARAM, (unsigned long) request);
367 }
368 #else
369 #define compat_radeon_cp_setparam NULL
370 #endif /* X86_64 || IA64 */
371
372 drm_ioctl_compat_t *radeon_compat_ioctls[] = {
373         [DRM_RADEON_CP_INIT] = compat_radeon_cp_init,
374         [DRM_RADEON_CLEAR] = compat_radeon_cp_clear,
375         [DRM_RADEON_STIPPLE] = compat_radeon_cp_stipple,
376         [DRM_RADEON_TEXTURE] = compat_radeon_cp_texture,
377         [DRM_RADEON_VERTEX2] = compat_radeon_cp_vertex2,
378         [DRM_RADEON_CMDBUF] = compat_radeon_cp_cmdbuf,
379         [DRM_RADEON_GETPARAM] = compat_radeon_cp_getparam,
380         [DRM_RADEON_SETPARAM] = compat_radeon_cp_setparam,
381         [DRM_RADEON_ALLOC] = compat_radeon_mem_alloc,
382         [DRM_RADEON_IRQ_EMIT] = compat_radeon_irq_emit,
383 };
384
385 /**
386  * Called whenever a 32-bit process running under a 64-bit kernel
387  * performs an ioctl on /dev/dri/card<n>.
388  *
389  * \param filp file pointer.
390  * \param cmd command.
391  * \param arg user argument.
392  * \return zero on success or negative number on failure.
393  */
394 long radeon_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
395 {
396         unsigned int nr = DRM_IOCTL_NR(cmd);
397         drm_ioctl_compat_t *fn = NULL;
398         int ret;
399
400         if (nr < DRM_COMMAND_BASE)
401                 return drm_compat_ioctl(filp, cmd, arg);
402
403         if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(radeon_compat_ioctls))
404                 fn = radeon_compat_ioctls[nr - DRM_COMMAND_BASE];
405
406         if (fn != NULL)
407                 ret = (*fn) (filp, cmd, arg);
408         else
409                 ret = drm_ioctl(filp, cmd, arg);
410
411         return ret;
412 }
413
414 long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
415 {
416         unsigned int nr = DRM_IOCTL_NR(cmd);
417         int ret;
418
419         if (nr < DRM_COMMAND_BASE)
420                 return drm_compat_ioctl(filp, cmd, arg);
421
422         ret = drm_ioctl(filp, cmd, arg);
423
424         return ret;
425 }