summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/qxl/qxl_object.c
blob: 8691c76c5ef0a440b9391765b7c0ca099e2d6e2c (plain)
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
/*
 * 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 "qxl_drv.h"
#include "qxl_object.h"

#include <linux/io-mapping.h>
static void qxl_ttm_bo_destroy(struct ttm_buffer_object *tbo)
{
	struct qxl_bo *bo;
	struct qxl_device *qdev;

	bo = container_of(tbo, struct qxl_bo, tbo);
	qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;

	qxl_surface_evict(qdev, bo, false);
	qxl_fence_fini(&bo->fence);
	mutex_lock(&qdev->gem.mutex);
	list_del_init(&bo->list);
	mutex_unlock(&qdev->gem.mutex);
	drm_gem_object_release(&bo->gem_base);
	kfree(bo);
}

bool qxl_ttm_bo_is_qxl_bo(struct ttm_buffer_object *bo)
{
	if (bo->destroy == &qxl_ttm_bo_destroy)
		return true;
	return false;
}

void qxl_ttm_placement_from_domain(struct qxl_bo *qbo, u32 domain, bool pinned)
{
	u32 c = 0;
	u32 pflag = pinned ? TTM_PL_FLAG_NO_EVICT : 0;

	qbo->placement.fpfn = 0;
	qbo->placement.lpfn = 0;
	qbo->placement.placement = qbo->placements;
	qbo->placement.busy_placement = qbo->placements;
	if (domain == QXL_GEM_DOMAIN_VRAM)
		qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_VRAM | pflag;
	if (domain == QXL_GEM_DOMAIN_SURFACE)
		qbo->placements[c++] = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_PRIV0 | pflag;
	if (domain == QXL_GEM_DOMAIN_CPU)
		qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM | pflag;
	if (!c)
		qbo->placements[c++] = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
	qbo->placement.num_placement = c;
	qbo->placement.num_busy_placement = c;
}


int qxl_bo_create(struct qxl_device *qdev,
		  unsigned long size, bool kernel, bool pinned, u32 domain,
		  struct qxl_surface *surf,
		  struct qxl_bo **bo_ptr)
{
	struct qxl_bo *bo;
	enum ttm_bo_type type;
	int r;

	if (unlikely(qdev->mman.bdev.dev_mapping == NULL))
		qdev->mman.bdev.dev_mapping = qdev->ddev->dev_mapping;
	if (kernel)
		type = ttm_bo_type_kernel;
	else
		type = ttm_bo_type_device;
	*bo_ptr = NULL;
	bo = kzalloc(sizeof(struct qxl_bo), GFP_KERNEL);
	if (bo == NULL)
		return -ENOMEM;
	size = roundup(size, PAGE_SIZE);
	r = drm_gem_object_init(qdev->ddev, &bo->gem_base, size);
	if (unlikely(r)) {
		kfree(bo);
		return r;
	}
	bo->type = domain;
	bo->pin_count = pinned ? 1 : 0;
	bo->surface_id = 0;
	qxl_fence_init(qdev, &bo->fence);
	INIT_LIST_HEAD(&bo->list);

	if (surf)
		bo->surf = *surf;

	qxl_ttm_placement_from_domain(bo, domain, pinned);

	r = ttm_bo_init(&qdev->mman.bdev, &bo->tbo, size, type,
			&bo->placement, 0, !kernel, NULL, size,
			NULL, &qxl_ttm_bo_destroy);
	if (unlikely(r != 0)) {
		if (r != -ERESTARTSYS)
			dev_err(qdev->dev,
				"object_init failed for (%lu, 0x%08X)\n",
				size, domain);
		return r;
	}
	*bo_ptr = bo;
	return 0;
}

int qxl_bo_kmap(struct qxl_bo *bo, void **ptr)
{
	bool is_iomem;
	int r;

	if (bo->kptr) {
		if (ptr)
			*ptr = bo->kptr;
		return 0;
	}
	r = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
	if (r)
		return r;
	bo->kptr = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
	if (ptr)
		*ptr = bo->kptr;
	return 0;
}

void *qxl_bo_kmap_atomic_page(struct qxl_device *qdev,
			      struct qxl_bo *bo, int page_offset)
{
	struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type];
	void *rptr;
	int ret;
	struct io_mapping *map;

	if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
		map = qdev->vram_mapping;
	else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0)
		map = qdev->surface_mapping;
	else
		goto fallback;

	(void) ttm_mem_io_lock(man, false);
	ret = ttm_mem_io_reserve(bo->tbo.bdev, &bo->tbo.mem);
	ttm_mem_io_unlock(man);

	return io_mapping_map_atomic_wc(map, bo->tbo.mem.bus.offset + page_offset);
fallback:
	if (bo->kptr) {
		rptr = bo->kptr + (page_offset * PAGE_SIZE);
		return rptr;
	}

	ret = qxl_bo_kmap(bo, &rptr);
	if (ret)
		return NULL;

	rptr += page_offset * PAGE_SIZE;
	return rptr;
}

void qxl_bo_kunmap(struct qxl_bo *bo)
{
	if (bo->kptr == NULL)
		return;
	bo->kptr = NULL;
	ttm_bo_kunmap(&bo->kmap);
}

void qxl_bo_kunmap_atomic_page(struct qxl_device *qdev,
			       struct qxl_bo *bo, void *pmap)
{
	struct ttm_mem_type_manager *man = &bo->tbo.bdev->man[bo->tbo.mem.mem_type];
	struct io_mapping *map;

	if (bo->tbo.mem.mem_type == TTM_PL_VRAM)
		map = qdev->vram_mapping;
	else if (bo->tbo.mem.mem_type == TTM_PL_PRIV0)
		map = qdev->surface_mapping;
	else
		goto fallback;

	io_mapping_unmap_atomic(pmap);

	(void) ttm_mem_io_lock(man, false);
	ttm_mem_io_free(bo->tbo.bdev, &bo->tbo.mem);
	ttm_mem_io_unlock(man);
	return ;
 fallback:
	qxl_bo_kunmap(bo);
}

void qxl_bo_unref(struct qxl_bo **bo)
{
	struct ttm_buffer_object *tbo;

	if ((*bo) == NULL)
		return;
	tbo = &((*bo)->tbo);
	ttm_bo_unref(&tbo);
	if (tbo == NULL)
		*bo = NULL;
}

struct qxl_bo *qxl_bo_ref(struct qxl_bo *bo)
{
	ttm_bo_reference(&bo->tbo);
	return bo;
}

int qxl_bo_pin(struct qxl_bo *bo, u32 domain, u64 *gpu_addr)
{
	struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;
	int r;

	if (bo->pin_count) {
		bo->pin_count++;
		if (gpu_addr)
			*gpu_addr = qxl_bo_gpu_offset(bo);
		return 0;
	}
	qxl_ttm_placement_from_domain(bo, domain, true);
	r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
	if (likely(r == 0)) {
		bo->pin_count = 1;
		if (gpu_addr != NULL)
			*gpu_addr = qxl_bo_gpu_offset(bo);
	}
	if (unlikely(r != 0))
		dev_err(qdev->dev, "%p pin failed\n", bo);
	return r;
}

int qxl_bo_unpin(struct qxl_bo *bo)
{
	struct qxl_device *qdev = (struct qxl_device *)bo->gem_base.dev->dev_private;
	int r, i;

	if (!bo->pin_count) {
		dev_warn(qdev->dev, "%p unpin not necessary\n", bo);
		return 0;
	}
	bo->pin_count--;
	if (bo->pin_count)
		return 0;
	for (i = 0; i < bo->placement.num_placement; i++)
		bo->placements[i] &= ~TTM_PL_FLAG_NO_EVICT;
	r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
	if (unlikely(r != 0))
		dev_err(qdev->dev, "%p validate failed for unpin\n", bo);
	return r;
}

void qxl_bo_force_delete(struct qxl_device *qdev)
{
	struct qxl_bo *bo, *n;

	if (list_empty(&qdev->gem.objects))
		return;
	dev_err(qdev->dev, "Userspace still has active objects !\n");
	list_for_each_entry_safe(bo, n, &qdev->gem.objects, list) {
		mutex_lock(&qdev->ddev->struct_mutex);
		dev_err(qdev->dev, "%p %p %lu %lu force free\n",
			&bo->gem_base, bo, (unsigned long)bo->gem_base.size,
			*((unsigned long *)&bo->gem_base.refcount));
		mutex_lock(&qdev->gem.mutex);
		list_del_init(&bo->list);
		mutex_unlock(&qdev->gem.mutex);
		/* this should unref the ttm bo */
		drm_gem_object_unreference(&bo->gem_base);
		mutex_unlock(&qdev->ddev->struct_mutex);
	}
}

int qxl_bo_init(struct qxl_device *qdev)
{
	return qxl_ttm_init(qdev);
}

void qxl_bo_fini(struct qxl_device *qdev)
{
	qxl_ttm_fini(qdev);
}

int qxl_bo_check_id(struct qxl_device *qdev, struct qxl_bo *bo)
{
	int ret;
	if (bo->type == QXL_GEM_DOMAIN_SURFACE && bo->surface_id == 0) {
		/* allocate a surface id for this surface now */
		ret = qxl_surface_id_alloc(qdev, bo);
		if (ret)
			return ret;

		ret = qxl_hw_surface_alloc(qdev, bo, NULL);
		if (ret)
			return ret;
	}
	return 0;
}

int qxl_surf_evict(struct qxl_device *qdev)
{
	return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
}

int qxl_vram_evict(struct qxl_device *qdev)
{
	return ttm_bo_evict_mm(&qdev->mman.bdev, TTM_PL_VRAM);
}