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6#include <drm/drm_fourcc.h>
7
8#include "gem/i915_gem_ioctls.h"
9#include "gem/i915_gem_lmem.h"
10#include "gem/i915_gem_region.h"
11#include "pxp/intel_pxp.h"
12
13#include "i915_drv.h"
14#include "i915_gem_create.h"
15#include "i915_trace.h"
16#include "i915_user_extensions.h"
17
18static u32 object_max_page_size(struct intel_memory_region **placements,
19 unsigned int n_placements)
20{
21 u32 max_page_size = 0;
22 int i;
23
24 for (i = 0; i < n_placements; i++) {
25 struct intel_memory_region *mr = placements[i];
26
27 GEM_BUG_ON(!is_power_of_2(mr->min_page_size));
28 max_page_size = max_t(u32, max_page_size, mr->min_page_size);
29 }
30
31 GEM_BUG_ON(!max_page_size);
32 return max_page_size;
33}
34
35static int object_set_placements(struct drm_i915_gem_object *obj,
36 struct intel_memory_region **placements,
37 unsigned int n_placements)
38{
39 struct intel_memory_region **arr;
40 unsigned int i;
41
42 GEM_BUG_ON(!n_placements);
43
44
45
46
47
48 if (n_placements == 1) {
49 struct intel_memory_region *mr = placements[0];
50 struct drm_i915_private *i915 = mr->i915;
51
52 obj->mm.placements = &i915->mm.regions[mr->id];
53 obj->mm.n_placements = 1;
54 } else {
55 arr = kmalloc_array(n_placements,
56 sizeof(struct intel_memory_region *),
57 GFP_KERNEL);
58 if (!arr)
59 return -ENOMEM;
60
61 for (i = 0; i < n_placements; i++)
62 arr[i] = placements[i];
63
64 obj->mm.placements = arr;
65 obj->mm.n_placements = n_placements;
66 }
67
68 return 0;
69}
70
71static int i915_gem_publish(struct drm_i915_gem_object *obj,
72 struct drm_file *file,
73 u64 *size_p,
74 u32 *handle_p)
75{
76 u64 size = obj->base.size;
77 int ret;
78
79 ret = drm_gem_handle_create(file, &obj->base, handle_p);
80
81 i915_gem_object_put(obj);
82 if (ret)
83 return ret;
84
85 *size_p = size;
86 return 0;
87}
88
89static struct drm_i915_gem_object *
90__i915_gem_object_create_user_ext(struct drm_i915_private *i915, u64 size,
91 struct intel_memory_region **placements,
92 unsigned int n_placements,
93 unsigned int ext_flags)
94{
95 struct intel_memory_region *mr = placements[0];
96 struct drm_i915_gem_object *obj;
97 unsigned int flags;
98 int ret;
99
100 i915_gem_flush_free_objects(i915);
101
102 size = round_up(size, object_max_page_size(placements, n_placements));
103 if (size == 0)
104 return ERR_PTR(-EINVAL);
105
106
107 GEM_BUG_ON(!IS_ALIGNED(size, PAGE_SIZE));
108
109 if (i915_gem_object_size_2big(size))
110 return ERR_PTR(-E2BIG);
111
112 obj = i915_gem_object_alloc();
113 if (!obj)
114 return ERR_PTR(-ENOMEM);
115
116 ret = object_set_placements(obj, placements, n_placements);
117 if (ret)
118 goto object_free;
119
120
121
122
123
124 flags = I915_BO_ALLOC_USER;
125
126 ret = mr->ops->init_object(mr, obj, I915_BO_INVALID_OFFSET, size, 0, flags);
127 if (ret)
128 goto object_free;
129
130 GEM_BUG_ON(size != obj->base.size);
131
132
133 obj->flags |= ext_flags;
134
135 trace_i915_gem_object_create(obj);
136 return obj;
137
138object_free:
139 if (obj->mm.n_placements > 1)
140 kfree(obj->mm.placements);
141 i915_gem_object_free(obj);
142 return ERR_PTR(ret);
143}
144
145
146
147
148
149
150
151
152
153
154
155
156struct drm_i915_gem_object *
157__i915_gem_object_create_user(struct drm_i915_private *i915, u64 size,
158 struct intel_memory_region **placements,
159 unsigned int n_placements)
160{
161 return __i915_gem_object_create_user_ext(i915, size, placements,
162 n_placements, 0);
163}
164
165int
166i915_gem_dumb_create(struct drm_file *file,
167 struct drm_device *dev,
168 struct drm_mode_create_dumb *args)
169{
170 struct drm_i915_gem_object *obj;
171 struct intel_memory_region *mr;
172 enum intel_memory_type mem_type;
173 int cpp = DIV_ROUND_UP(args->bpp, 8);
174 u32 format;
175
176 switch (cpp) {
177 case 1:
178 format = DRM_FORMAT_C8;
179 break;
180 case 2:
181 format = DRM_FORMAT_RGB565;
182 break;
183 case 4:
184 format = DRM_FORMAT_XRGB8888;
185 break;
186 default:
187 return -EINVAL;
188 }
189
190
191 args->pitch = ALIGN(args->width * cpp, 64);
192
193
194 if (args->pitch > intel_plane_fb_max_stride(to_i915(dev), format,
195 DRM_FORMAT_MOD_LINEAR))
196 args->pitch = ALIGN(args->pitch, 4096);
197
198 if (args->pitch < args->width)
199 return -EINVAL;
200
201 args->size = mul_u32_u32(args->pitch, args->height);
202
203 mem_type = INTEL_MEMORY_SYSTEM;
204 if (HAS_LMEM(to_i915(dev)))
205 mem_type = INTEL_MEMORY_LOCAL;
206
207 mr = intel_memory_region_by_type(to_i915(dev), mem_type);
208
209 obj = __i915_gem_object_create_user(to_i915(dev), args->size, &mr, 1);
210 if (IS_ERR(obj))
211 return PTR_ERR(obj);
212
213 return i915_gem_publish(obj, file, &args->size, &args->handle);
214}
215
216
217
218
219
220
221
222int
223i915_gem_create_ioctl(struct drm_device *dev, void *data,
224 struct drm_file *file)
225{
226 struct drm_i915_private *i915 = to_i915(dev);
227 struct drm_i915_gem_create *args = data;
228 struct drm_i915_gem_object *obj;
229 struct intel_memory_region *mr;
230
231 mr = intel_memory_region_by_type(i915, INTEL_MEMORY_SYSTEM);
232
233 obj = __i915_gem_object_create_user(i915, args->size, &mr, 1);
234 if (IS_ERR(obj))
235 return PTR_ERR(obj);
236
237 return i915_gem_publish(obj, file, &args->size, &args->handle);
238}
239
240struct create_ext {
241 struct drm_i915_private *i915;
242 struct intel_memory_region *placements[INTEL_REGION_UNKNOWN];
243 unsigned int n_placements;
244 unsigned long flags;
245};
246
247static void repr_placements(char *buf, size_t size,
248 struct intel_memory_region **placements,
249 int n_placements)
250{
251 int i;
252
253 buf[0] = '\0';
254
255 for (i = 0; i < n_placements; i++) {
256 struct intel_memory_region *mr = placements[i];
257 int r;
258
259 r = snprintf(buf, size, "\n %s -> { class: %d, inst: %d }",
260 mr->name, mr->type, mr->instance);
261 if (r >= size)
262 return;
263
264 buf += r;
265 size -= r;
266 }
267}
268
269static int set_placements(struct drm_i915_gem_create_ext_memory_regions *args,
270 struct create_ext *ext_data)
271{
272 struct drm_i915_private *i915 = ext_data->i915;
273 struct drm_i915_gem_memory_class_instance __user *uregions =
274 u64_to_user_ptr(args->regions);
275 struct intel_memory_region *placements[INTEL_REGION_UNKNOWN];
276 u32 mask;
277 int i, ret = 0;
278
279 if (args->pad) {
280 drm_dbg(&i915->drm, "pad should be zero\n");
281 ret = -EINVAL;
282 }
283
284 if (!args->num_regions) {
285 drm_dbg(&i915->drm, "num_regions is zero\n");
286 ret = -EINVAL;
287 }
288
289 BUILD_BUG_ON(ARRAY_SIZE(i915->mm.regions) != ARRAY_SIZE(placements));
290 BUILD_BUG_ON(ARRAY_SIZE(ext_data->placements) != ARRAY_SIZE(placements));
291 if (args->num_regions > ARRAY_SIZE(i915->mm.regions)) {
292 drm_dbg(&i915->drm, "num_regions is too large\n");
293 ret = -EINVAL;
294 }
295
296 if (ret)
297 return ret;
298
299 mask = 0;
300 for (i = 0; i < args->num_regions; i++) {
301 struct drm_i915_gem_memory_class_instance region;
302 struct intel_memory_region *mr;
303
304 if (copy_from_user(®ion, uregions, sizeof(region)))
305 return -EFAULT;
306
307 mr = intel_memory_region_lookup(i915,
308 region.memory_class,
309 region.memory_instance);
310 if (!mr || mr->private) {
311 drm_dbg(&i915->drm, "Device is missing region { class: %d, inst: %d } at index = %d\n",
312 region.memory_class, region.memory_instance, i);
313 ret = -EINVAL;
314 goto out_dump;
315 }
316
317 if (mask & BIT(mr->id)) {
318 drm_dbg(&i915->drm, "Found duplicate placement %s -> { class: %d, inst: %d } at index = %d\n",
319 mr->name, region.memory_class,
320 region.memory_instance, i);
321 ret = -EINVAL;
322 goto out_dump;
323 }
324
325 placements[i] = mr;
326 mask |= BIT(mr->id);
327
328 ++uregions;
329 }
330
331 if (ext_data->n_placements) {
332 ret = -EINVAL;
333 goto out_dump;
334 }
335
336 ext_data->n_placements = args->num_regions;
337 for (i = 0; i < args->num_regions; i++)
338 ext_data->placements[i] = placements[i];
339
340 return 0;
341
342out_dump:
343 if (1) {
344 char buf[256];
345
346 if (ext_data->n_placements) {
347 repr_placements(buf,
348 sizeof(buf),
349 ext_data->placements,
350 ext_data->n_placements);
351 drm_dbg(&i915->drm,
352 "Placements were already set in previous EXT. Existing placements: %s\n",
353 buf);
354 }
355
356 repr_placements(buf, sizeof(buf), placements, i);
357 drm_dbg(&i915->drm, "New placements(so far validated): %s\n", buf);
358 }
359
360 return ret;
361}
362
363static int ext_set_placements(struct i915_user_extension __user *base,
364 void *data)
365{
366 struct drm_i915_gem_create_ext_memory_regions ext;
367
368 if (copy_from_user(&ext, base, sizeof(ext)))
369 return -EFAULT;
370
371 return set_placements(&ext, data);
372}
373
374static int ext_set_protected(struct i915_user_extension __user *base, void *data)
375{
376 struct drm_i915_gem_create_ext_protected_content ext;
377 struct create_ext *ext_data = data;
378
379 if (copy_from_user(&ext, base, sizeof(ext)))
380 return -EFAULT;
381
382 if (ext.flags)
383 return -EINVAL;
384
385 if (!intel_pxp_is_enabled(&to_gt(ext_data->i915)->pxp))
386 return -ENODEV;
387
388 ext_data->flags |= I915_BO_PROTECTED;
389
390 return 0;
391}
392
393static const i915_user_extension_fn create_extensions[] = {
394 [I915_GEM_CREATE_EXT_MEMORY_REGIONS] = ext_set_placements,
395 [I915_GEM_CREATE_EXT_PROTECTED_CONTENT] = ext_set_protected,
396};
397
398
399
400
401
402
403
404int
405i915_gem_create_ext_ioctl(struct drm_device *dev, void *data,
406 struct drm_file *file)
407{
408 struct drm_i915_private *i915 = to_i915(dev);
409 struct drm_i915_gem_create_ext *args = data;
410 struct create_ext ext_data = { .i915 = i915 };
411 struct drm_i915_gem_object *obj;
412 int ret;
413
414 if (args->flags)
415 return -EINVAL;
416
417 ret = i915_user_extensions(u64_to_user_ptr(args->extensions),
418 create_extensions,
419 ARRAY_SIZE(create_extensions),
420 &ext_data);
421 if (ret)
422 return ret;
423
424 if (!ext_data.n_placements) {
425 ext_data.placements[0] =
426 intel_memory_region_by_type(i915, INTEL_MEMORY_SYSTEM);
427 ext_data.n_placements = 1;
428 }
429
430 obj = __i915_gem_object_create_user_ext(i915, args->size,
431 ext_data.placements,
432 ext_data.n_placements,
433 ext_data.flags);
434 if (IS_ERR(obj))
435 return PTR_ERR(obj);
436
437 return i915_gem_publish(obj, file, &args->size, &args->handle);
438}
439