1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
|
/*
* Copyright 2013 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Dave Airlie
* Alon Levy
*/
#include <linux/pci.h>
#include <linux/uaccess.h>
#include "qxl_drv.h"
#include "qxl_object.h"
/*
* TODO: allocating a new gem(in qxl_bo) for each request.
* This is wasteful since bo's are page aligned.
*/
static int qxl_alloc_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct qxl_device *qdev = to_qxl(dev);
struct drm_qxl_alloc *qxl_alloc = data;
int ret;
struct qxl_bo *qobj;
uint32_t handle;
u32 domain = QXL_GEM_DOMAIN_VRAM;
if (qxl_alloc->size == 0) {
DRM_ERROR("invalid size %d\n", qxl_alloc->size);
return -EINVAL;
}
ret = qxl_gem_object_create_with_handle(qdev, file_priv,
domain,
qxl_alloc->size,
NULL,
&qobj, &handle);
if (ret) {
DRM_ERROR("%s: failed to create gem ret=%d\n",
__func__, ret);
return -ENOMEM;
}
qxl_alloc->handle = handle;
return 0;
}
static int qxl_map_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct qxl_device *qdev = to_qxl(dev);
struct drm_qxl_map *qxl_map = data;
return qxl_mode_dumb_mmap(file_priv, &qdev->ddev, qxl_map->handle,
&qxl_map->offset);
}
struct qxl_reloc_info {
int type;
struct qxl_bo *dst_bo;
uint32_t dst_offset;
struct qxl_bo *src_bo;
int src_offset;
};
/*
* dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's
* are on vram).
* *(dst + dst_off) = qxl_bo_physical_address(src, src_off)
*/
static void
apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
{
void *reloc_page;
reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
*(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev,
info->src_bo,
info->src_offset);
qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
}
static void
apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
{
uint32_t id = 0;
void *reloc_page;
if (info->src_bo && !info->src_bo->is_primary)
id = info->src_bo->surface_id;
reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
*(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id;
qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
}
/* return holding the reference to this object */
static int qxlhw_handle_to_bo(struct drm_file *file_priv, uint64_t handle,
struct qxl_release *release, struct qxl_bo **qbo_p)
{
struct drm_gem_object *gobj;
struct qxl_bo *qobj;
int ret;
gobj = drm_gem_object_lookup(file_priv, handle);
if (!gobj)
return -EINVAL;
qobj = gem_to_qxl_bo(gobj);
ret = qxl_release_list_add(release, qobj);
drm_gem_object_put_unlocked(gobj);
if (ret)
return ret;
*qbo_p = qobj;
return 0;
}
/*
* Usage of execbuffer:
* Relocations need to take into account the full QXLDrawable size.
* However, the command as passed from user space must *not* contain the initial
* QXLReleaseInfo struct (first XXX bytes)
*/
static int qxl_process_single_command(struct qxl_device *qdev,
struct drm_qxl_command *cmd,
struct drm_file *file_priv)
{
struct qxl_reloc_info *reloc_info;
int release_type;
struct qxl_release *release;
struct qxl_bo *cmd_bo;
void *fb_cmd;
int i, ret, num_relocs;
int unwritten;
switch (cmd->type) {
case QXL_CMD_DRAW:
release_type = QXL_RELEASE_DRAWABLE;
break;
case QXL_CMD_SURFACE:
case QXL_CMD_CURSOR:
default:
DRM_DEBUG("Only draw commands in execbuffers\n");
return -EINVAL;
break;
}
if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info))
return -EINVAL;
if (!access_ok(u64_to_user_ptr(cmd->command),
cmd->command_size))
return -EFAULT;
reloc_info = kmalloc_array(cmd->relocs_num,
sizeof(struct qxl_reloc_info), GFP_KERNEL);
if (!reloc_info)
return -ENOMEM;
ret = qxl_alloc_release_reserved(qdev,
sizeof(union qxl_release_info) +
cmd->command_size,
release_type,
&release,
&cmd_bo);
if (ret)
goto out_free_reloc;
/* TODO copy slow path code from i915 */
fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_MASK));
unwritten = __copy_from_user_inatomic_nocache
(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_MASK),
u64_to_user_ptr(cmd->command), cmd->command_size);
{
struct qxl_drawable *draw = fb_cmd;
draw->mm_time = qdev->rom->mm_clock;
}
qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd);
if (unwritten) {
DRM_ERROR("got unwritten %d\n", unwritten);
ret = -EFAULT;
goto out_free_release;
}
/* fill out reloc info structs */
num_relocs = 0;
for (i = 0; i < cmd->relocs_num; ++i) {
struct drm_qxl_reloc reloc;
struct drm_qxl_reloc __user *u = u64_to_user_ptr(cmd->relocs);
if (copy_from_user(&reloc, u + i, sizeof(reloc))) {
ret = -EFAULT;
goto out_free_bos;
}
/* add the bos to the list of bos to validate -
need to validate first then process relocs? */
if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) {
DRM_DEBUG("unknown reloc type %d\n", reloc.reloc_type);
ret = -EINVAL;
goto out_free_bos;
}
reloc_info[i].type = reloc.reloc_type;
if (reloc.dst_handle) {
ret = qxlhw_handle_to_bo(file_priv, reloc.dst_handle, release,
&reloc_info[i].dst_bo);
if (ret)
goto out_free_bos;
reloc_info[i].dst_offset = reloc.dst_offset;
} else {
reloc_info[i].dst_bo = cmd_bo;
reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset;
}
num_relocs++;
/* reserve and validate the reloc dst bo */
if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle) {
ret = qxlhw_handle_to_bo(file_priv, reloc.src_handle, release,
&reloc_info[i].src_bo);
if (ret)
goto out_free_bos;
reloc_info[i].src_offset = reloc.src_offset;
} else {
reloc_info[i].src_bo = NULL;
reloc_info[i].src_offset = 0;
}
}
/* validate all buffers */
ret = qxl_release_reserve_list(release, false);
if (ret)
goto out_free_bos;
for (i = 0; i < cmd->relocs_num; ++i) {
if (reloc_info[i].type == QXL_RELOC_TYPE_BO)
apply_reloc(qdev, &reloc_info[i]);
else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF)
apply_surf_reloc(qdev, &reloc_info[i]);
}
ret = qxl_push_command_ring_release(qdev, release, cmd->type, true);
if (ret)
qxl_release_backoff_reserve_list(release);
else
qxl_release_fence_buffer_objects(release);
out_free_bos:
out_free_release:
if (ret)
qxl_release_free(qdev, release);
out_free_reloc:
kfree(reloc_info);
return ret;
}
static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct qxl_device *qdev = to_qxl(dev);
struct drm_qxl_execbuffer *execbuffer = data;
struct drm_qxl_command user_cmd;
int cmd_num;
int ret;
for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) {
struct drm_qxl_command __user *commands =
u64_to_user_ptr(execbuffer->commands);
if (copy_from_user(&user_cmd, commands + cmd_num,
sizeof(user_cmd)))
return -EFAULT;
ret = qxl_process_single_command(qdev, &user_cmd, file_priv);
if (ret)
return ret;
}
return 0;
}
static int qxl_update_area_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct qxl_device *qdev = to_qxl(dev);
struct drm_qxl_update_area *update_area = data;
struct qxl_rect area = {.left = update_area->left,
.top = update_area->top,
.right = update_area->right,
.bottom = update_area->bottom};
int ret;
struct drm_gem_object *gobj = NULL;
struct qxl_bo *qobj = NULL;
struct ttm_operation_ctx ctx = { true, false };
if (update_area->left >= update_area->right ||
update_area->top >= update_area->bottom)
return -EINVAL;
gobj = drm_gem_object_lookup(file, update_area->handle);
if (gobj == NULL)
return -ENOENT;
qobj = gem_to_qxl_bo(gobj);
ret = qxl_bo_reserve(qobj, false);
if (ret)
goto out;
if (!qobj->pin_count) {
qxl_ttm_placement_from_domain(qobj, qobj->type, false);
ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, &ctx);
if (unlikely(ret))
goto out;
}
ret = qxl_bo_check_id(qdev, qobj);
if (ret)
goto out2;
if (!qobj->surface_id)
DRM_ERROR("got update area for surface with no id %d\n", update_area->handle);
ret = qxl_io_update_area(qdev, qobj, &area);
out2:
qxl_bo_unreserve(qobj);
out:
drm_gem_object_put_unlocked(gobj);
return ret;
}
static int qxl_getparam_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct qxl_device *qdev = to_qxl(dev);
struct drm_qxl_getparam *param = data;
switch (param->param) {
case QXL_PARAM_NUM_SURFACES:
param->value = qdev->rom->n_surfaces;
break;
case QXL_PARAM_MAX_RELOCS:
param->value = QXL_MAX_RES;
break;
default:
return -EINVAL;
}
return 0;
}
static int qxl_clientcap_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct qxl_device *qdev = to_qxl(dev);
struct drm_qxl_clientcap *param = data;
int byte, idx;
byte = param->index / 8;
idx = param->index % 8;
if (dev->pdev->revision < 4)
return -ENOSYS;
if (byte >= 58)
return -ENOSYS;
if (qdev->rom->client_capabilities[byte] & (1 << idx))
return 0;
return -ENOSYS;
}
static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct qxl_device *qdev = to_qxl(dev);
struct drm_qxl_alloc_surf *param = data;
struct qxl_bo *qobj;
int handle;
int ret;
int size, actual_stride;
struct qxl_surface surf;
/* work out size allocate bo with handle */
actual_stride = param->stride < 0 ? -param->stride : param->stride;
size = actual_stride * param->height + actual_stride;
surf.format = param->format;
surf.width = param->width;
surf.height = param->height;
surf.stride = param->stride;
surf.data = 0;
ret = qxl_gem_object_create_with_handle(qdev, file,
QXL_GEM_DOMAIN_SURFACE,
size,
&surf,
&qobj, &handle);
if (ret) {
DRM_ERROR("%s: failed to create gem ret=%d\n",
__func__, ret);
return -ENOMEM;
} else
param->handle = handle;
return ret;
}
const struct drm_ioctl_desc qxl_ioctls[] = {
DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH),
DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH),
DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl,
DRM_AUTH),
DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl,
DRM_AUTH),
DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl,
DRM_AUTH),
DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl,
DRM_AUTH),
DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl,
DRM_AUTH),
};
int qxl_max_ioctls = ARRAY_SIZE(qxl_ioctls);
|