2 * Copyright 2013 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
22 * Authors: Dave Airlie
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>
33 #include <drm/qxl_drm.h>
35 #include "qxl_object.h"
37 #include <linux/delay.h>
38 static int qxl_ttm_debugfs_init(struct qxl_device *qdev);
40 static struct qxl_device *qxl_get_qdev(struct ttm_bo_device *bdev)
42 struct qxl_mman *mman;
43 struct qxl_device *qdev;
45 mman = container_of(bdev, struct qxl_mman, bdev);
46 qdev = container_of(mman, struct qxl_device, mman);
50 static int qxl_ttm_mem_global_init(struct drm_global_reference *ref)
52 return ttm_mem_global_init(ref->object);
55 static void qxl_ttm_mem_global_release(struct drm_global_reference *ref)
57 ttm_mem_global_release(ref->object);
60 static int qxl_ttm_global_init(struct qxl_device *qdev)
62 struct drm_global_reference *global_ref;
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;
72 r = drm_global_item_ref(global_ref);
74 DRM_ERROR("Failed setting up TTM memory accounting "
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);
88 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
89 drm_global_item_unref(&qdev->mman.mem_global_ref);
93 qdev->mman.mem_global_referenced = true;
97 static void qxl_ttm_global_fini(struct qxl_device *qdev)
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;
106 static struct vm_operations_struct qxl_ttm_vm_ops;
107 static const struct vm_operations_struct *ttm_vm_ops;
109 static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
111 struct ttm_buffer_object *bo;
112 struct qxl_device *qdev;
115 bo = (struct ttm_buffer_object *)vma->vm_private_data;
117 return VM_FAULT_NOPAGE;
118 qdev = qxl_get_qdev(bo->bdev);
119 r = ttm_vm_ops->fault(vma, vmf);
123 int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
125 struct drm_file *file_priv;
126 struct qxl_device *qdev;
129 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
130 pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
131 __func__, vma->vm_pgoff);
132 return drm_mmap(filp, vma);
135 file_priv = filp->private_data;
136 qdev = file_priv->minor->dev->dev_private;
139 "filp->private_data->minor->dev->dev_private == NULL\n");
142 QXL_INFO(qdev, "%s: filp->private_data = 0x%p, vma->vm_pgoff = %lx\n",
143 __func__, filp->private_data, vma->vm_pgoff);
145 r = ttm_bo_mmap(filp, vma, &qdev->mman.bdev);
146 if (unlikely(r != 0))
148 if (unlikely(ttm_vm_ops == NULL)) {
149 ttm_vm_ops = vma->vm_ops;
150 qxl_ttm_vm_ops = *ttm_vm_ops;
151 qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
153 vma->vm_ops = &qxl_ttm_vm_ops;
157 static int qxl_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
162 static int qxl_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
163 struct ttm_mem_type_manager *man)
165 struct qxl_device *qdev;
167 qdev = qxl_get_qdev(bdev);
172 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
173 man->available_caching = TTM_PL_MASK_CACHING;
174 man->default_caching = TTM_PL_FLAG_CACHED;
178 /* "On-card" video ram */
179 man->func = &ttm_bo_manager_func;
181 man->flags = TTM_MEMTYPE_FLAG_FIXED |
182 TTM_MEMTYPE_FLAG_MAPPABLE;
183 man->available_caching = TTM_PL_MASK_CACHING;
184 man->default_caching = TTM_PL_FLAG_CACHED;
187 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
193 static void qxl_evict_flags(struct ttm_buffer_object *bo,
194 struct ttm_placement *placement)
197 static u32 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
199 if (!qxl_ttm_bo_is_qxl_bo(bo)) {
202 placement->placement = &placements;
203 placement->busy_placement = &placements;
204 placement->num_placement = 1;
205 placement->num_busy_placement = 1;
208 qbo = container_of(bo, struct qxl_bo, tbo);
209 qxl_ttm_placement_from_domain(qbo, QXL_GEM_DOMAIN_CPU, false);
210 *placement = qbo->placement;
213 static int qxl_verify_access(struct ttm_buffer_object *bo, struct file *filp)
215 struct qxl_bo *qbo = to_qxl_bo(bo);
217 return drm_vma_node_verify_access(&qbo->gem_base.vma_node, filp);
220 static int qxl_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
221 struct ttm_mem_reg *mem)
223 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
224 struct qxl_device *qdev = qxl_get_qdev(bdev);
226 mem->bus.addr = NULL;
228 mem->bus.size = mem->num_pages << PAGE_SHIFT;
230 mem->bus.is_iomem = false;
231 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
233 switch (mem->mem_type) {
238 mem->bus.is_iomem = true;
239 mem->bus.base = qdev->vram_base;
240 mem->bus.offset = mem->start << PAGE_SHIFT;
243 mem->bus.is_iomem = true;
244 mem->bus.base = qdev->surfaceram_base;
245 mem->bus.offset = mem->start << PAGE_SHIFT;
253 static void qxl_ttm_io_mem_free(struct ttm_bo_device *bdev,
254 struct ttm_mem_reg *mem)
259 * TTM backend functions.
262 struct ttm_dma_tt ttm;
263 struct qxl_device *qdev;
267 static int qxl_ttm_backend_bind(struct ttm_tt *ttm,
268 struct ttm_mem_reg *bo_mem)
270 struct qxl_ttm_tt *gtt = (void *)ttm;
272 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
273 if (!ttm->num_pages) {
274 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
275 ttm->num_pages, bo_mem, ttm);
277 /* Not implemented */
281 static int qxl_ttm_backend_unbind(struct ttm_tt *ttm)
283 /* Not implemented */
287 static void qxl_ttm_backend_destroy(struct ttm_tt *ttm)
289 struct qxl_ttm_tt *gtt = (void *)ttm;
291 ttm_dma_tt_fini(>t->ttm);
295 static struct ttm_backend_func qxl_backend_func = {
296 .bind = &qxl_ttm_backend_bind,
297 .unbind = &qxl_ttm_backend_unbind,
298 .destroy = &qxl_ttm_backend_destroy,
301 static int qxl_ttm_tt_populate(struct ttm_tt *ttm)
305 if (ttm->state != tt_unpopulated)
308 r = ttm_pool_populate(ttm);
315 static void qxl_ttm_tt_unpopulate(struct ttm_tt *ttm)
317 ttm_pool_unpopulate(ttm);
320 static struct ttm_tt *qxl_ttm_tt_create(struct ttm_bo_device *bdev,
321 unsigned long size, uint32_t page_flags,
322 struct page *dummy_read_page)
324 struct qxl_device *qdev;
325 struct qxl_ttm_tt *gtt;
327 qdev = qxl_get_qdev(bdev);
328 gtt = kzalloc(sizeof(struct qxl_ttm_tt), GFP_KERNEL);
331 gtt->ttm.ttm.func = &qxl_backend_func;
333 if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags,
338 return >t->ttm.ttm;
341 static void qxl_move_null(struct ttm_buffer_object *bo,
342 struct ttm_mem_reg *new_mem)
344 struct ttm_mem_reg *old_mem = &bo->mem;
346 BUG_ON(old_mem->mm_node != NULL);
348 new_mem->mm_node = NULL;
351 static int qxl_bo_move(struct ttm_buffer_object *bo,
352 bool evict, bool interruptible,
354 struct ttm_mem_reg *new_mem)
356 struct ttm_mem_reg *old_mem = &bo->mem;
357 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
358 qxl_move_null(bo, new_mem);
361 return ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
365 static int qxl_sync_obj_wait(void *sync_obj,
366 bool lazy, bool interruptible)
368 struct qxl_fence *qfence = (struct qxl_fence *)sync_obj;
369 int count = 0, sc = 0;
370 struct qxl_bo *bo = container_of(qfence, struct qxl_bo, fence);
372 if (qfence->num_active_releases == 0)
377 if (bo->type == QXL_GEM_DOMAIN_SURFACE)
378 qxl_update_surface(qfence->qdev, bo);
379 } else if (sc >= 1) {
380 qxl_io_notify_oom(qfence->qdev);
385 for (count = 0; count < 10; count++) {
387 ret = qxl_queue_garbage_collect(qfence->qdev, true);
391 if (qfence->num_active_releases == 0)
395 if (qfence->num_active_releases) {
396 bool have_drawable_releases = false;
398 struct radix_tree_iter iter;
401 radix_tree_for_each_slot(slot, &qfence->tree, &iter, 0) {
402 struct qxl_release *release;
404 release_id = iter.index;
405 release = qxl_release_from_id_locked(qfence->qdev, release_id);
409 if (release->type == QXL_RELEASE_DRAWABLE)
410 have_drawable_releases = true;
413 qxl_queue_garbage_collect(qfence->qdev, true);
415 if (have_drawable_releases || sc < 4) {
418 usleep_range(500, 1000);
419 if (have_drawable_releases && sc > 300) {
420 WARN(1, "sync obj %d still has outstanding releases %d %d %d %ld %d\n", sc, bo->surface_id, bo->is_primary, bo->pin_count, (unsigned long)bo->gem_base.size, qfence->num_active_releases);
429 static int qxl_sync_obj_flush(void *sync_obj)
434 static void qxl_sync_obj_unref(void **sync_obj)
439 static void *qxl_sync_obj_ref(void *sync_obj)
444 static bool qxl_sync_obj_signaled(void *sync_obj)
446 struct qxl_fence *qfence = (struct qxl_fence *)sync_obj;
447 return (qfence->num_active_releases == 0);
450 static void qxl_bo_move_notify(struct ttm_buffer_object *bo,
451 struct ttm_mem_reg *new_mem)
454 struct qxl_device *qdev;
456 if (!qxl_ttm_bo_is_qxl_bo(bo))
458 qbo = container_of(bo, struct qxl_bo, tbo);
459 qdev = qbo->gem_base.dev->dev_private;
461 if (bo->mem.mem_type == TTM_PL_PRIV0 && qbo->surface_id)
462 qxl_surface_evict(qdev, qbo, new_mem ? true : false);
465 static struct ttm_bo_driver qxl_bo_driver = {
466 .ttm_tt_create = &qxl_ttm_tt_create,
467 .ttm_tt_populate = &qxl_ttm_tt_populate,
468 .ttm_tt_unpopulate = &qxl_ttm_tt_unpopulate,
469 .invalidate_caches = &qxl_invalidate_caches,
470 .init_mem_type = &qxl_init_mem_type,
471 .evict_flags = &qxl_evict_flags,
472 .move = &qxl_bo_move,
473 .verify_access = &qxl_verify_access,
474 .io_mem_reserve = &qxl_ttm_io_mem_reserve,
475 .io_mem_free = &qxl_ttm_io_mem_free,
476 .sync_obj_signaled = &qxl_sync_obj_signaled,
477 .sync_obj_wait = &qxl_sync_obj_wait,
478 .sync_obj_flush = &qxl_sync_obj_flush,
479 .sync_obj_unref = &qxl_sync_obj_unref,
480 .sync_obj_ref = &qxl_sync_obj_ref,
481 .move_notify = &qxl_bo_move_notify,
486 int qxl_ttm_init(struct qxl_device *qdev)
489 int num_io_pages; /* != rom->num_io_pages, we include surface0 */
491 r = qxl_ttm_global_init(qdev);
494 /* No others user of address space so set it to 0 */
495 r = ttm_bo_device_init(&qdev->mman.bdev,
496 qdev->mman.bo_global_ref.ref.object,
498 qdev->ddev->anon_inode->i_mapping,
499 DRM_FILE_PAGE_OFFSET, 0);
501 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
504 /* NOTE: this includes the framebuffer (aka surface 0) */
505 num_io_pages = qdev->rom->ram_header_offset / PAGE_SIZE;
506 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_VRAM,
509 DRM_ERROR("Failed initializing VRAM heap.\n");
512 r = ttm_bo_init_mm(&qdev->mman.bdev, TTM_PL_PRIV0,
513 qdev->surfaceram_size / PAGE_SIZE);
515 DRM_ERROR("Failed initializing Surfaces heap.\n");
518 DRM_INFO("qxl: %uM of VRAM memory size\n",
519 (unsigned)qdev->vram_size / (1024 * 1024));
520 DRM_INFO("qxl: %luM of IO pages memory ready (VRAM domain)\n",
521 ((unsigned)num_io_pages * PAGE_SIZE) / (1024 * 1024));
522 DRM_INFO("qxl: %uM of Surface memory size\n",
523 (unsigned)qdev->surfaceram_size / (1024 * 1024));
524 r = qxl_ttm_debugfs_init(qdev);
526 DRM_ERROR("Failed to init debugfs\n");
532 void qxl_ttm_fini(struct qxl_device *qdev)
534 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_VRAM);
535 ttm_bo_clean_mm(&qdev->mman.bdev, TTM_PL_PRIV0);
536 ttm_bo_device_release(&qdev->mman.bdev);
537 qxl_ttm_global_fini(qdev);
538 DRM_INFO("qxl: ttm finalized\n");
542 #define QXL_DEBUGFS_MEM_TYPES 2
544 #if defined(CONFIG_DEBUG_FS)
545 static int qxl_mm_dump_table(struct seq_file *m, void *data)
547 struct drm_info_node *node = (struct drm_info_node *)m->private;
548 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
549 struct drm_device *dev = node->minor->dev;
550 struct qxl_device *rdev = dev->dev_private;
552 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
554 spin_lock(&glob->lru_lock);
555 ret = drm_mm_dump_table(m, mm);
556 spin_unlock(&glob->lru_lock);
561 static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
563 #if defined(CONFIG_DEBUG_FS)
564 static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
565 static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
568 for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
570 sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
572 sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
573 qxl_mem_types_list[i].name = qxl_mem_types_names[i];
574 qxl_mem_types_list[i].show = &qxl_mm_dump_table;
575 qxl_mem_types_list[i].driver_features = 0;
577 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
579 qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
582 return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);