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26#include <drm/ttm/ttm_bo_api.h>
27#include <drm/ttm/ttm_bo_driver.h>
28#include <drm/ttm/ttm_placement.h>
29#include <drm/ttm/ttm_page_alloc.h>
30#include <drm/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>
38
39static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
40{
41 struct qxl_mman *mman;
42 struct qxl_device *qdev;
43
44 mman = container_of(bdev, struct qxl_mman, bdev);
45 qdev = container_of(mman, struct qxl_device, mman);
46 return qdev;
47}
48
49static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
50{
51 return ttm_mem_global_init(ref->object);
52}
53
54static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
55{
56 ttm_mem_global_release(ref->object);
57}
58
59static int qxl_ttm_global_init(struct qxl_device *qdev)
60{
61 struct drm_global_reference *global_ref;
62 int r;
63
64 qdev->mman.mem_global_referenced = false;
65 global_ref = &qdev->mman.mem_global_ref;
66 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
67 global_ref->size = sizeof(struct ttm_mem_global);
68 global_ref->init = &qxl_ttm_mem_global_init;
69 global_ref->release = &qxl_ttm_mem_global_release;
70
71 r = drm_global_item_ref(global_ref);
72 if (r != 0) {
73 DRM_ERROR("Failed setting up TTM memory accounting "
74 "subsystem.\n");
75 return r;
76 }
77
78 qdev->mman.bo_global_ref.mem_glob =
79 qdev->mman.mem_global_ref.object;
80 global_ref = &qdev->mman.bo_global_ref.ref;
81 global_ref->global_type = DRM_GLOBAL_TTM_BO;
82 global_ref->size = sizeof(struct ttm_bo_global);
83 global_ref->init = &ttm_bo_global_init;
84 global_ref->release = &ttm_bo_global_release;
85 r = drm_global_item_ref(global_ref);
86 if (r != 0) {
87 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
88 drm_global_item_unref(&qdev->mman.mem_global_ref);
89 return r;
90 }
91
92 qdev->mman.mem_global_referenced = true;
93 return 0;
94}
95
96static void qxl_ttm_global_fini(struct qxl_device *qdev)
97{
98 if (qdev->mman.mem_global_referenced) {
99 drm_global_item_unref(&qdev->mman.bo_global_ref.ref);
100 drm_global_item_unref(&qdev->mman.mem_global_ref);
101 qdev->mman.mem_global_referenced = false;
102 }
103}
104
105static struct vm_operations_struct qxl_ttm_vm_ops;
106static const struct vm_operations_struct *ttm_vm_ops;
107
108static int qxl_ttm_fault(struct vm_fault *vmf)
109{
110 struct ttm_buffer_object *bo;
111 int r;
112
113 bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data;
114 if (bo == NULL)
115 return VM_FAULT_NOPAGE;
116 r = ttm_vm_ops->fault(vmf);
117 return r;
118}
119
120int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
121{
122 struct drm_file *file_priv;
123 struct qxl_device *qdev;
124 int r;
125
126 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
127 return -EINVAL;
128
129 file_priv = filp->private_data;
130 qdev = file_priv->minor->dev->dev_private;
131 if (qdev == NULL) {
132 DRM_ERROR(
133 "filp->private_data->minor->dev->dev_private == NULL\n");
134 return -EINVAL;
135 }
136 DRM_DEBUG_DRIVER("filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
137 filp->private_data, vma->vm_pgoff);
138
139 r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
140 if (unlikely(r != 0))
141 return r;
142 if (unlikely(ttm_vm_ops == NULL)) {
143 ttm_vm_ops = vma->vm_ops;
144 qxl_ttm_vm_ops = *ttm_vm_ops;
145 qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
146 }
147 vma->vm_ops = &qxl_ttm_vm_ops;
148 return 0;
149}
150
151static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
152{
153 return 0;
154}
155
156static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
157 struct ttm_mem_type_manager *man)
158{
159 switch (type) {
160 case TTM_PL_SYSTEM:
161
162 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
163 man->available_caching = TTM_PL_MASK_CACHING;
164 man->default_caching = TTM_PL_FLAG_CACHED;
165 break;
166 case TTM_PL_VRAM:
167 case TTM_PL_PRIV:
168
169 man->func = &ttm_bo_manager_func;
170 man->gpu_offset = 0;
171 man->flags = TTM_MEMTYPE_FLAG_FIXED |
172 TTM_MEMTYPE_FLAG_MAPPABLE;
173 man->available_caching = TTM_PL_MASK_CACHING;
174 man->default_caching = TTM_PL_FLAG_CACHED;
175 break;
176 default:
177 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
178 return -EINVAL;
179 }
180 return 0;
181}
182
183static void qxl_evict_flags(struct ttm_buffer_object *bo,
184 struct ttm_placement *placement)
185{
186 struct qxl_bo *qbo;
187 static const struct ttm_place placements = {
188 .fpfn = 0,
189 .lpfn = 0,
190 .flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM
191 };
192
193 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
194 placement->placement = &placements;
195 placement->busy_placement = &placements;
196 placement->num_placement = 1;
197 placement->num_busy_placement = 1;
198 return;
199 }
200 qbo = to_qxl_bo(bo);
201 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
202 *placement = qbo->placement;
203}
204
205static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
206{
207 struct qxl_bo *qbo = to_qxl_bo(bo);
208
209 return drm_vma_node_verify_access(&qbo->gem_base.vma_node,
210 filp->private_data);
211}
212
213static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
214 struct ttm_mem_reg *mem)
215{
216 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
217 struct qxl_device *qdev = qxl_get_qdev(bdev);
218
219 mem->bus.addr = NULL;
220 mem->bus.offset = 0;
221 mem->bus.size = mem->num_pages << PAGE_SHIFT;
222 mem->bus.base = 0;
223 mem->bus.is_iomem = false;
224 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
225 return -EINVAL;
226 switch (mem->mem_type) {
227 case TTM_PL_SYSTEM:
228
229 return 0;
230 case TTM_PL_VRAM:
231 mem->bus.is_iomem = true;
232 mem->bus.base = qdev->vram_base;
233 mem->bus.offset = mem->start << PAGE_SHIFT;
234 break;
235 case TTM_PL_PRIV:
236 mem->bus.is_iomem = true;
237 mem->bus.base = qdev->surfaceram_base;
238 mem->bus.offset = mem->start << PAGE_SHIFT;
239 break;
240 default:
241 return -EINVAL;
242 }
243 return 0;
244}
245
246static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
247 struct ttm_mem_reg *mem)
248{
249}
250
251
252
253
254struct qxl_ttm_tt {
255 struct ttm_dma_tt ttm;
256 struct qxl_device *qdev;
257 u64 offset;
258};
259
260static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
261 struct ttm_mem_reg *bo_mem)
262{
263 struct qxl_ttm_tt *gtt = (void *)ttm;
264
265 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
266 if (!ttm->num_pages) {
267 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
268 ttm->num_pages, bo_mem, ttm);
269 }
270
271 return -1;
272}
273
274static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
275{
276
277 return -1;
278}
279
280static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
281{
282 struct qxl_ttm_tt *gtt = (void *)ttm;
283
284 ttm_dma_tt_fini(>t->ttm);
285 kfree(gtt);
286}
287
288static struct ttm_backend_func qxl_backend_func = {
289 .bind = &qxl_ttm_backend_bind,
290 .unbind = &qxl_ttm_backend_unbind,
291 .destroy = &qxl_ttm_backend_destroy,
292};
293
294static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo,
295 uint32_t page_flags)
296{
297 struct qxl_device *qdev;
298 struct qxl_ttm_tt *gtt;
299
300 qdev = qxl_get_qdev(bo->bdev);
301 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
302 if (gtt == NULL)
303 return NULL;
304 gtt->ttm.ttm.func = &qxl_backend_func;
305 gtt->qdev = qdev;
306 if (ttm_dma_tt_init(>t->ttm, bo, page_flags)) {
307 kfree(gtt);
308 return NULL;
309 }
310 return >t->ttm.ttm;
311}
312
313static void qxl_move_null(struct ttm_buffer_object *bo,
314 struct ttm_mem_reg *new_mem)
315{
316 struct ttm_mem_reg *old_mem = &bo->mem;
317
318 BUG_ON(old_mem->mm_node != NULL);
319 *old_mem = *new_mem;
320 new_mem->mm_node = NULL;
321}
322
323static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict,
324 struct ttm_operation_ctx *ctx,
325 struct ttm_mem_reg *new_mem)
326{
327 struct ttm_mem_reg *old_mem = &bo->mem;
328 int ret;
329
330 ret = ttm_bo_wait(bo, ctx->interruptible, ctx->no_wait_gpu);
331 if (ret)
332 return ret;
333
334
335 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
336 qxl_move_null(bo, new_mem);
337 return 0;
338 }
339 return ttm_bo_move_memcpy(bo, ctx, new_mem);
340}
341
342static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
343 bool evict,
344 struct ttm_mem_reg *new_mem)
345{
346 struct qxl_bo *qbo;
347 struct qxl_device *qdev;
348
349 if (!qxl_ttm_bo_is_qxl_bo(bo))
350 return;
351 qbo = to_qxl_bo(bo);
352 qdev = qbo->gem_base.dev->dev_private;
353
354 if (bo->mem.mem_type == TTM_PL_PRIV && qbo->surface_id)
355 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
356}
357
358static struct ttm_bo_driver qxl_bo_driver = {
359 .ttm_tt_create = &qxl_ttm_tt_create,
360 .invalidate_caches = &qxl_invalidate_caches,
361 .init_mem_type = &qxl_init_mem_type,
362 .eviction_valuable = ttm_bo_eviction_valuable,
363 .evict_flags = &qxl_evict_flags,
364 .move = &qxl_bo_move,
365 .verify_access = &qxl_verify_access,
366 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
367 .io_mem_free = &qxl_ttm_io_mem_free,
368 .move_notify = &qxl_bo_move_notify,
369};
370
371int qxl_ttm_init(struct qxl_device *qdev)
372{
373 int r;
374 int num_io_pages;
375
376 r = qxl_ttm_global_init(qdev);
377 if (r)
378 return r;
379
380 r = ttm_bo_device_init(&qdev->mman.bdev,
381 qdev->mman.bo_global_ref.ref.object,
382 &qxl_bo_driver,
383 qdev->ddev.anon_inode->i_mapping,
384 DRM_FILE_PAGE_OFFSET, 0);
385 if (r) {
386 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
387 return r;
388 }
389
390 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
391 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
392 num_io_pages);
393 if (r) {
394 DRM_ERROR("Failed initializing VRAM heap.\n");
395 return r;
396 }
397 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV,
398 qdev->surfaceram_size / PAGE_SIZE);
399 if (r) {
400 DRM_ERROR("Failed initializing Surfaces heap.\n");
401 return r;
402 }
403 DRM_INFO("qxl: %uM of VRAM memory size\n",
404 (unsigned)qdev->vram_size / (1024 * 1024));
405 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
406 ((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
407 DRM_INFO("qxl: %uM of Surface memory size\n",
408 (unsigned)qdev->surfaceram_size / (1024 * 1024));
409 return 0;
410}
411
412void qxl_ttm_fini(struct qxl_device *qdev)
413{
414 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
415 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV);
416 ttm_bo_device_release(&qdev->mman.bdev);
417 qxl_ttm_global_fini(qdev);
418 DRM_INFO("qxl: ttm finalized\n");
419}
420
421
422#define QXL_DEBUGFS_MEM_TYPES 2
423
424#if defined(CONFIG_DEBUG_FS)
425static int qxl_mm_dump_table(struct seq_file *m, void *data)
426{
427 struct drm_info_node *node = (struct drm_info_node *)m->private;
428 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
429 struct drm_device *dev = node->minor->dev;
430 struct qxl_device *rdev = dev->dev_private;
431 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
432 struct drm_printer p = drm_seq_file_printer(m);
433
434 spin_lock(&glob->lru_lock);
435 drm_mm_print(mm, &p);
436 spin_unlock(&glob->lru_lock);
437 return 0;
438}
439#endif
440
441int qxl_ttm_debugfs_init(struct qxl_device *qdev)
442{
443#if defined(CONFIG_DEBUG_FS)
444 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
445 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
446 unsigned i;
447
448 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
449 if (i == 0)
450 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
451 else
452 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
453 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
454 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
455 qxl_mem_types_list[i].driver_features = 0;
456 if (i == 0)
457 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
458 else
459 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV].priv;
460
461 }
462 return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
463#else
464 return 0;
465#endif
466}
467
