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1/*
2 * Copyright 2013 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Dave Airlie
23 * Alon Levy
24 */
25
26#include <linux/delay.h>
27
28#include <drm/drm.h>
29#include <drm/drm_file.h>
30#include <drm/drm_debugfs.h>
31#include <drm/qxl_drm.h>
32#include <drm/ttm/ttm_bo_api.h>
33#include <drm/ttm/ttm_bo_driver.h>
34#include <drm/ttm/ttm_module.h>
35#include <drm/ttm/ttm_page_alloc.h>
36#include <drm/ttm/ttm_placement.h>
37
38#include "qxl_drv.h"
39#include "qxl_object.h"
40
41static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
42{
43 struct qxl_mman *mman;
44 struct qxl_device *qdev;
45
46 mman = container_of(bdev, struct qxl_mman, bdev);
47 qdev = container_of(mman, struct qxl_device, mman);
48 return qdev;
49}
50
51static struct vm_operations_struct qxl_ttm_vm_ops;
52static const struct vm_operations_struct *ttm_vm_ops;
53
54static vm_fault_t qxl_ttm_fault(struct vm_fault *vmf)
55{
56 struct ttm_buffer_object *bo;
57 vm_fault_t ret;
58
59 bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data;
60 if (bo == NULL)
61 return VM_FAULT_NOPAGE;
62 ret = ttm_vm_ops->fault(vmf);
63 return ret;
64}
65
66int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
67{
68 int r;
69 struct drm_file *file_priv = filp->private_data;
70 struct qxl_device *qdev = file_priv->minor->dev->dev_private;
71
72 if (qdev == NULL) {
73 DRM_ERROR(
74 "filp->private_data->minor->dev->dev_private == NULL\n");
75 return -EINVAL;
76 }
77 DRM_DEBUG_DRIVER("filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
78 filp->private_data, vma->vm_pgoff);
79
80 r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
81 if (unlikely(r != 0))
82 return r;
83 if (unlikely(ttm_vm_ops == NULL)) {
84 ttm_vm_ops = vma->vm_ops;
85 qxl_ttm_vm_ops = *ttm_vm_ops;
86 qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
87 }
88 vma->vm_ops = &qxl_ttm_vm_ops;
89 return 0;
90}
91
92static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
93{
94 return 0;
95}
96
97static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
98 struct ttm_mem_type_manager *man)
99{
100 struct qxl_device *qdev = qxl_get_qdev(bdev);
101 unsigned int gpu_offset_shift =
102 64 - (qdev->rom->slot_gen_bits + qdev->rom->slot_id_bits + 8);
103 struct qxl_memslot *slot;
104
105 switch (type) {
106 case TTM_PL_SYSTEM:
107 /* System memory */
108 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
109 man->available_caching = TTM_PL_MASK_CACHING;
110 man->default_caching = TTM_PL_FLAG_CACHED;
111 break;
112 case TTM_PL_VRAM:
113 case TTM_PL_PRIV:
114 /* "On-card" video ram */
115 slot = (type == TTM_PL_VRAM) ?
116 &qdev->main_slot : &qdev->surfaces_slot;
117 slot->gpu_offset = (uint64_t)type << gpu_offset_shift;
118 man->func = &ttm_bo_manager_func;
119 man->gpu_offset = slot->gpu_offset;
120 man->flags = TTM_MEMTYPE_FLAG_FIXED |
121 TTM_MEMTYPE_FLAG_MAPPABLE;
122 man->available_caching = TTM_PL_MASK_CACHING;
123 man->default_caching = TTM_PL_FLAG_CACHED;
124 break;
125 default:
126 DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
127 return -EINVAL;
128 }
129 return 0;
130}
131
132static void qxl_evict_flags(struct ttm_buffer_object *bo,
133 struct ttm_placement *placement)
134{
135 struct qxl_bo *qbo;
136 static const struct ttm_place placements = {
137 .fpfn = 0,
138 .lpfn = 0,
139 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
140 };
141
142 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
143 placement->placement = &placements;
144 placement->busy_placement = &placements;
145 placement->num_placement = 1;
146 placement->num_busy_placement = 1;
147 return;
148 }
149 qbo = to_qxl_bo(bo);
150 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
151 *placement = qbo->placement;
152}
153
154static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
155{
156 struct qxl_bo *qbo = to_qxl_bo(bo);
157
158 return drm_vma_node_verify_access(&qbo->tbo.base.vma_node,
159 filp->private_data);
160}
161
162static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
163 struct ttm_mem_reg *mem)
164{
165 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
166 struct qxl_device *qdev = qxl_get_qdev(bdev);
167
168 mem->bus.addr = NULL;
169 mem->bus.offset = 0;
170 mem->bus.size = mem->num_pages << PAGE_SHIFT;
171 mem->bus.base = 0;
172 mem->bus.is_iomem = false;
173 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
174 return -EINVAL;
175 switch (mem->mem_type) {
176 case TTM_PL_SYSTEM:
177 /* system memory */
178 return 0;
179 case TTM_PL_VRAM:
180 mem->bus.is_iomem = true;
181 mem->bus.base = qdev->vram_base;
182 mem->bus.offset = mem->start << PAGE_SHIFT;
183 break;
184 case TTM_PL_PRIV:
185 mem->bus.is_iomem = true;
186 mem->bus.base = qdev->surfaceram_base;
187 mem->bus.offset = mem->start << PAGE_SHIFT;
188 break;
189 default:
190 return -EINVAL;
191 }
192 return 0;
193}
194
195static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
196 struct ttm_mem_reg *mem)
197{
198}
199
200/*
201 * TTM backend functions.
202 */
203struct qxl_ttm_tt {
204 struct ttm_tt ttm;
205 struct qxl_device *qdev;
206 u64 offset;
207};
208
209static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
210 struct ttm_mem_reg *bo_mem)
211{
212 struct qxl_ttm_tt *gtt = (void *)ttm;
213
214 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
215 if (!ttm->num_pages) {
216 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
217 ttm->num_pages, bo_mem, ttm);
218 }
219 /* Not implemented */
220 return -1;
221}
222
223static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
224{
225 /* Not implemented */
226 return -1;
227}
228
229static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
230{
231 struct qxl_ttm_tt *gtt = (void *)ttm;
232
233 ttm_tt_fini(>t->ttm);
234 kfree(gtt);
235}
236
237static struct ttm_backend_func qxl_backend_func = {
238 .bind = &qxl_ttm_backend_bind,
239 .unbind = &qxl_ttm_backend_unbind,
240 .destroy = &qxl_ttm_backend_destroy,
241};
242
243static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
244 uint32_t page_flags)
245{
246 struct qxl_device *qdev;
247 struct qxl_ttm_tt *gtt;
248
249 qdev = qxl_get_qdev(bo->bdev);
250 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
251 if (gtt == NULL)
252 return NULL;
253 gtt->ttm.func = &qxl_backend_func;
254 gtt->qdev = qdev;
255 if (ttm_tt_init(>t->ttm, bo, page_flags)) {
256 kfree(gtt);
257 return NULL;
258 }
259 return >t->ttm;
260}
261
262static void qxl_move_null(struct ttm_buffer_object *bo,
263 struct ttm_mem_reg *new_mem)
264{
265 struct ttm_mem_reg *old_mem = &bo->mem;
266
267 BUG_ON(old_mem->mm_node != NULL);
268 *old_mem = *new_mem;
269 new_mem->mm_node = NULL;
270}
271
272static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
273 struct ttm_operation_ctx *ctx,
274 struct ttm_mem_reg *new_mem)
275{
276 struct ttm_mem_reg *old_mem = &bo->mem;
277 int ret;
278
279 ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
280 if (ret)
281 return ret;
282
283 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
284 qxl_move_null(bo, new_mem);
285 return 0;
286 }
287 return ttm_bo_move_memcpy(bo, ctx, new_mem);
288}
289
290static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
291 bool evict,
292 struct ttm_mem_reg *new_mem)
293{
294 struct qxl_bo *qbo;
295 struct qxl_device *qdev;
296
297 if (!qxl_ttm_bo_is_qxl_bo(bo))
298 return;
299 qbo = to_qxl_bo(bo);
300 qdev = qbo->tbo.base.dev->dev_private;
301
302 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id)
303 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
304}
305
306static struct ttm_bo_driver qxl_bo_driver = {
307 .ttm_tt_create = &qxl_ttm_tt_create,
308 .invalidate_caches = &qxl_invalidate_caches,
309 .init_mem_type = &qxl_init_mem_type,
310 .eviction_valuable = ttm_bo_eviction_valuable,
311 .evict_flags = &qxl_evict_flags,
312 .move = &qxl_bo_move,
313 .verify_access = &qxl_verify_access,
314 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
315 .io_mem_free = &qxl_ttm_io_mem_free,
316 .move_notify = &qxl_bo_move_notify,
317};
318
319int qxl_ttm_init(struct qxl_device *qdev)
320{
321 int r;
322 int num_io_pages; /* != rom->num_io_pages, we include surface0 */
323
324 /* No others user of address space so set it to 0 */
325 r = ttm_bo_device_init(&qdev->mman.bdev,
326 &qxl_bo_driver,
327 qdev->ddev.anon_inode->i_mapping,
328 false);
329 if (r) {
330 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
331 return r;
332 }
333 /* NOTE: this includes the framebuffer (aka surface 0) */
334 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
335 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
336 num_io_pages);
337 if (r) {
338 DRM_ERROR("Failed initializing VRAM heap.\n");
339 return r;
340 }
341 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV,
342 qdev->surfaceram_size / PAGE_SIZE);
343 if (r) {
344 DRM_ERROR("Failed initializing Surfaces heap.\n");
345 return r;
346 }
347 DRM_INFO("qxl: %uM of VRAM memory size\n",
348 (unsigned int)qdev->vram_size / (1024 * 1024));
349 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
350 ((unsigned int)num_io_pages * PAGE_SIZE) / (1024 * 1024));
351 DRM_INFO("qxl: %uM of Surface memory size\n",
352 (unsigned int)qdev->surfaceram_size / (1024 * 1024));
353 return 0;
354}
355
356void qxl_ttm_fini(struct qxl_device *qdev)
357{
358 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
359 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV);
360 ttm_bo_device_release(&qdev->mman.bdev);
361 DRM_INFO("qxl: ttm finalized\n");
362}
363
364#define QXL_DEBUGFS_MEM_TYPES 2
365
366#if defined(CONFIG_DEBUG_FS)
367static int qxl_mm_dump_table(struct seq_file *m, void *data)
368{
369 struct drm_info_node *node = (struct drm_info_node *)m->private;
370 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
371 struct drm_device *dev = node->minor->dev;
372 struct qxl_device *rdev = dev->dev_private;
373 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
374 struct drm_printer p = drm_seq_file_printer(m);
375
376 spin_lock(&glob->lru_lock);
377 drm_mm_print(mm, &p);
378 spin_unlock(&glob->lru_lock);
379 return 0;
380}
381#endif
382
383int qxl_ttm_debugfs_init(struct qxl_device *qdev)
384{
385#if defined(CONFIG_DEBUG_FS)
386 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
387 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
388 unsigned int i;
389
390 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
391 if (i == 0)
392 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
393 else
394 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
395 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
396 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
397 qxl_mem_types_list[i].driver_features = 0;
398 if (i == 0)
399 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
400 else
401 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV].priv;
402
403 }
404 return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
405#else
406 return 0;
407#endif
408}
1/*
2 * Copyright 2013 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Dave Airlie
23 * Alon Levy
24 */
25
26#include <ttm/ttm_bo_api.h>
27#include <ttm/ttm_bo_driver.h>
28#include <ttm/ttm_placement.h>
29#include <ttm/ttm_page_alloc.h>
30#include <ttm/ttm_module.h>
31#include <drm/drmP.h>
32#include <drm/drm.h>
33#include <drm/qxl_drm.h>
34#include "qxl_drv.h"
35#include "qxl_object.h"
36
37#include <linux/delay.h>
38static int qxl_ttm_debugfs_init(struct qxl_device *qdev);
39
40static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
41{
42 struct qxl_mman *mman;
43 struct qxl_device *qdev;
44
45 mman = container_of(bdev, struct qxl_mman, bdev);
46 qdev = container_of(mman, struct qxl_device, mman);
47 return qdev;
48}
49
50static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
51{
52 return ttm_mem_global_init(ref->object);
53}
54
55static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
56{
57 ttm_mem_global_release(ref->object);
58}
59
60static int qxl_ttm_global_init(struct qxl_device *qdev)
61{
62 struct drm_global_reference *global_ref;
63 int r;
64
65 qdev->mman.mem_global_referenced = false;
66 global_ref = &qdev->mman.mem_global_ref;
67 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
68 global_ref->size = sizeof(struct ttm_mem_global);
69 global_ref->init = &qxl_ttm_mem_global_init;
70 global_ref->release = &qxl_ttm_mem_global_release;
71
72 r = drm_global_item_ref(global_ref);
73 if (r != 0) {
74 DRM_ERROR("Failed setting up TTM memory accounting "
75 "subsystem.\n");
76 return r;
77 }
78
79 qdev->mman.bo_global_ref.mem_glob =
80 qdev->mman.mem_global_ref.object;
81 global_ref = &qdev->mman.bo_global_ref.ref;
82 global_ref->global_type = DRM_GLOBAL_TTM_BO;
83 global_ref->size = sizeof(struct ttm_bo_global);
84 global_ref->init = &ttm_bo_global_init;
85 global_ref->release = &ttm_bo_global_release;
86 r = drm_global_item_ref(global_ref);
87 if (r != 0) {
88 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
89 drm_global_item_unref(&qdev->mman.mem_global_ref);
90 return r;
91 }
92
93 qdev->mman.mem_global_referenced = true;
94 return 0;
95}
96
97static void qxl_ttm_global_fini(struct qxl_device *qdev)
98{
99 if (qdev->mman.mem_global_referenced) {
100 drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
101 drm_global_item_unref(&qdev->mman.mem_global_ref);
102 qdev->mman.mem_global_referenced = false;
103 }
104}
105
106static struct vm_operations_struct qxl_ttm_vm_ops;
107static const struct vm_operations_struct *ttm_vm_ops;
108
109static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
110{
111 struct ttm_buffer_object *bo;
112 int r;
113
114 bo = (struct ttm_buffer_object *)vma->vm_private_data;
115 if (bo == NULL)
116 return VM_FAULT_NOPAGE;
117 r = ttm_vm_ops->fault(vma, vmf);
118 return r;
119}
120
121int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
122{
123 struct drm_file *file_priv;
124 struct qxl_device *qdev;
125 int r;
126
127 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
128 pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
129 __func__, vma->vm_pgoff);
130 return -EINVAL;
131 }
132
133 file_priv = filp->private_data;
134 qdev = file_priv->minor->dev->dev_private;
135 if (qdev == NULL) {
136 DRM_ERROR(
137 "filp->private_data->minor->dev->dev_private == NULL\n");
138 return -EINVAL;
139 }
140 QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
141 __func__, filp->private_data, vma->vm_pgoff);
142
143 r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
144 if (unlikely(r != 0))
145 return r;
146 if (unlikely(ttm_vm_ops == NULL)) {
147 ttm_vm_ops = vma->vm_ops;
148 qxl_ttm_vm_ops = *ttm_vm_ops;
149 qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
150 }
151 vma->vm_ops = &qxl_ttm_vm_ops;
152 return 0;
153}
154
155static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
156{
157 return 0;
158}
159
160static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
161 struct ttm_mem_type_manager *man)
162{
163 switch (type) {
164 case TTM_PL_SYSTEM:
165 /* System memory */
166 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
167 man->available_caching = TTM_PL_MASK_CACHING;
168 man->default_caching = TTM_PL_FLAG_CACHED;
169 break;
170 case TTM_PL_VRAM:
171 case TTM_PL_PRIV0:
172 /* "On-card" video ram */
173 man->func = &ttm_bo_manager_func;
174 man->gpu_offset = 0;
175 man->flags = TTM_MEMTYPE_FLAG_FIXED |
176 TTM_MEMTYPE_FLAG_MAPPABLE;
177 man->available_caching = TTM_PL_MASK_CACHING;
178 man->default_caching = TTM_PL_FLAG_CACHED;
179 break;
180 default:
181 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
182 return -EINVAL;
183 }
184 return 0;
185}
186
187static void qxl_evict_flags(struct ttm_buffer_object *bo,
188 struct ttm_placement *placement)
189{
190 struct qxl_bo *qbo;
191 static struct ttm_place placements = {
192 .fpfn = 0,
193 .lpfn = 0,
194 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
195 };
196
197 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
198 placement->placement = &placements;
199 placement->busy_placement = &placements;
200 placement->num_placement = 1;
201 placement->num_busy_placement = 1;
202 return;
203 }
204 qbo = to_qxl_bo(bo);
205 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
206 *placement = qbo->placement;
207}
208
209static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
210{
211 struct qxl_bo *qbo = to_qxl_bo(bo);
212
213 return drm_vma_node_verify_access(&qbo->gem_base.vma_node, filp);
214}
215
216static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
217 struct ttm_mem_reg *mem)
218{
219 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
220 struct qxl_device *qdev = qxl_get_qdev(bdev);
221
222 mem->bus.addr = NULL;
223 mem->bus.offset = 0;
224 mem->bus.size = mem->num_pages << PAGE_SHIFT;
225 mem->bus.base = 0;
226 mem->bus.is_iomem = false;
227 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
228 return -EINVAL;
229 switch (mem->mem_type) {
230 case TTM_PL_SYSTEM:
231 /* system memory */
232 return 0;
233 case TTM_PL_VRAM:
234 mem->bus.is_iomem = true;
235 mem->bus.base = qdev->vram_base;
236 mem->bus.offset = mem->start << PAGE_SHIFT;
237 break;
238 case TTM_PL_PRIV0:
239 mem->bus.is_iomem = true;
240 mem->bus.base = qdev->surfaceram_base;
241 mem->bus.offset = mem->start << PAGE_SHIFT;
242 break;
243 default:
244 return -EINVAL;
245 }
246 return 0;
247}
248
249static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
250 struct ttm_mem_reg *mem)
251{
252}
253
254/*
255 * TTM backend functions.
256 */
257struct qxl_ttm_tt {
258 struct ttm_dma_tt ttm;
259 struct qxl_device *qdev;
260 u64 offset;
261};
262
263static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
264 struct ttm_mem_reg *bo_mem)
265{
266 struct qxl_ttm_tt *gtt = (void *)ttm;
267
268 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
269 if (!ttm->num_pages) {
270 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
271 ttm->num_pages, bo_mem, ttm);
272 }
273 /* Not implemented */
274 return -1;
275}
276
277static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
278{
279 /* Not implemented */
280 return -1;
281}
282
283static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
284{
285 struct qxl_ttm_tt *gtt = (void *)ttm;
286
287 ttm_dma_tt_fini(>t->ttm);
288 kfree(gtt);
289}
290
291static struct ttm_backend_func qxl_backend_func = {
292 .bind = &qxl_ttm_backend_bind,
293 .unbind = &qxl_ttm_backend_unbind,
294 .destroy = &qxl_ttm_backend_destroy,
295};
296
297static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
298{
299 int r;
300
301 if (ttm->state != tt_unpopulated)
302 return 0;
303
304 r = ttm_pool_populate(ttm);
305 if (r)
306 return r;
307
308 return 0;
309}
310
311static void qxl_ttm_tt_unpopulate(struct ttm_tt *ttm)
312{
313 ttm_pool_unpopulate(ttm);
314}
315
316static struct ttm_tt *qxl_ttm_tt_create(struct ttm_bo_device *bdev,
317 unsigned long size, uint32_t page_flags,
318 struct page *dummy_read_page)
319{
320 struct qxl_device *qdev;
321 struct qxl_ttm_tt *gtt;
322
323 qdev = qxl_get_qdev(bdev);
324 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
325 if (gtt == NULL)
326 return NULL;
327 gtt->ttm.ttm.func = &qxl_backend_func;
328 gtt->qdev = qdev;
329 if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags,
330 dummy_read_page)) {
331 kfree(gtt);
332 return NULL;
333 }
334 return >t->ttm.ttm;
335}
336
337static void qxl_move_null(struct ttm_buffer_object *bo,
338 struct ttm_mem_reg *new_mem)
339{
340 struct ttm_mem_reg *old_mem = &bo->mem;
341
342 BUG_ON(old_mem->mm_node != NULL);
343 *old_mem = *new_mem;
344 new_mem->mm_node = NULL;
345}
346
347static int qxl_bo_move(struct ttm_buffer_object *bo,
348 bool evict, bool interruptible,
349 bool no_wait_gpu,
350 struct ttm_mem_reg *new_mem)
351{
352 struct ttm_mem_reg *old_mem = &bo->mem;
353 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
354 qxl_move_null(bo, new_mem);
355 return 0;
356 }
357 return ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
358}
359
360static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
361 struct ttm_mem_reg *new_mem)
362{
363 struct qxl_bo *qbo;
364 struct qxl_device *qdev;
365
366 if (!qxl_ttm_bo_is_qxl_bo(bo))
367 return;
368 qbo = to_qxl_bo(bo);
369 qdev = qbo->gem_base.dev->dev_private;
370
371 if (bo->mem.mem_type == TTM_PL_PRIV0 && qbo->surface_id)
372 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
373}
374
375static struct ttm_bo_driver qxl_bo_driver = {
376 .ttm_tt_create = &qxl_ttm_tt_create,
377 .ttm_tt_populate = &qxl_ttm_tt_populate,
378 .ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
379 .invalidate_caches = &qxl_invalidate_caches,
380 .init_mem_type = &qxl_init_mem_type,
381 .evict_flags = &qxl_evict_flags,
382 .move = &qxl_bo_move,
383 .verify_access = &qxl_verify_access,
384 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
385 .io_mem_free = &qxl_ttm_io_mem_free,
386 .move_notify = &qxl_bo_move_notify,
387};
388
389int qxl_ttm_init(struct qxl_device *qdev)
390{
391 int r;
392 int num_io_pages; /* != rom->num_io_pages, we include surface0 */
393
394 r = qxl_ttm_global_init(qdev);
395 if (r)
396 return r;
397 /* No others user of address space so set it to 0 */
398 r = ttm_bo_device_init(&qdev->mman.bdev,
399 qdev->mman.bo_global_ref.ref.object,
400 &qxl_bo_driver,
401 qdev->ddev->anon_inode->i_mapping,
402 DRM_FILE_PAGE_OFFSET, 0);
403 if (r) {
404 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
405 return r;
406 }
407 /* NOTE: this includes the framebuffer (aka surface 0) */
408 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
409 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
410 num_io_pages);
411 if (r) {
412 DRM_ERROR("Failed initializing VRAM heap.\n");
413 return r;
414 }
415 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV0,
416 qdev->surfaceram_size / PAGE_SIZE);
417 if (r) {
418 DRM_ERROR("Failed initializing Surfaces heap.\n");
419 return r;
420 }
421 DRM_INFO("qxl: %uM of VRAM memory size\n",
422 (unsigned)qdev->vram_size / (1024 * 1024));
423 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
424 ((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
425 DRM_INFO("qxl: %uM of Surface memory size\n",
426 (unsigned)qdev->surfaceram_size / (1024 * 1024));
427 r = qxl_ttm_debugfs_init(qdev);
428 if (r) {
429 DRM_ERROR("Failed to init debugfs\n");
430 return r;
431 }
432 return 0;
433}
434
435void qxl_ttm_fini(struct qxl_device *qdev)
436{
437 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
438 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
439 ttm_bo_device_release(&qdev->mman.bdev);
440 qxl_ttm_global_fini(qdev);
441 DRM_INFO("qxl: ttm finalized\n");
442}
443
444
445#define QXL_DEBUGFS_MEM_TYPES 2
446
447#if defined(CONFIG_DEBUG_FS)
448static int qxl_mm_dump_table(struct seq_file *m, void *data)
449{
450 struct drm_info_node *node = (struct drm_info_node *)m->private;
451 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
452 struct drm_device *dev = node->minor->dev;
453 struct qxl_device *rdev = dev->dev_private;
454 int ret;
455 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
456
457 spin_lock(&glob->lru_lock);
458 ret = drm_mm_dump_table(m, mm);
459 spin_unlock(&glob->lru_lock);
460 return ret;
461}
462#endif
463
464static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
465{
466#if defined(CONFIG_DEBUG_FS)
467 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
468 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
469 unsigned i;
470
471 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
472 if (i == 0)
473 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
474 else
475 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
476 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
477 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
478 qxl_mem_types_list[i].driver_features = 0;
479 if (i == 0)
480 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
481 else
482 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
483
484 }
485 return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
486#else
487 return 0;
488#endif
489}