2 * Copyright 2009 Jerome Glisse.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19 * USE OR OTHER DEALINGS IN THE SOFTWARE.
21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
28 * Jerome Glisse <glisse@freedesktop.org>
29 * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
32 #include <ttm/ttm_bo_api.h>
33 #include <ttm/ttm_bo_driver.h>
34 #include <ttm/ttm_placement.h>
35 #include <ttm/ttm_module.h>
37 #include <drm/radeon_drm.h>
38 #include <linux/seq_file.h>
39 #include <linux/slab.h>
40 #include "radeon_reg.h"
43 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
45 static int radeon_ttm_debugfs_init(struct radeon_device *rdev);
47 static struct radeon_device *radeon_get_rdev(struct ttm_bo_device *bdev)
49 struct radeon_mman *mman;
50 struct radeon_device *rdev;
52 mman = container_of(bdev, struct radeon_mman, bdev);
53 rdev = container_of(mman, struct radeon_device, mman);
61 static int radeon_ttm_mem_global_init(struct ttm_global_reference *ref)
63 return ttm_mem_global_init(ref->object);
66 static void radeon_ttm_mem_global_release(struct ttm_global_reference *ref)
68 ttm_mem_global_release(ref->object);
71 static int radeon_ttm_global_init(struct radeon_device *rdev)
73 struct ttm_global_reference *global_ref;
76 rdev->mman.mem_global_referenced = false;
77 global_ref = &rdev->mman.mem_global_ref;
78 global_ref->global_type = TTM_GLOBAL_TTM_MEM;
79 global_ref->size = sizeof(struct ttm_mem_global);
80 global_ref->init = &radeon_ttm_mem_global_init;
81 global_ref->release = &radeon_ttm_mem_global_release;
82 r = ttm_global_item_ref(global_ref);
84 DRM_ERROR("Failed setting up TTM memory accounting "
89 rdev->mman.bo_global_ref.mem_glob =
90 rdev->mman.mem_global_ref.object;
91 global_ref = &rdev->mman.bo_global_ref.ref;
92 global_ref->global_type = TTM_GLOBAL_TTM_BO;
93 global_ref->size = sizeof(struct ttm_bo_global);
94 global_ref->init = &ttm_bo_global_init;
95 global_ref->release = &ttm_bo_global_release;
96 r = ttm_global_item_ref(global_ref);
98 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
99 ttm_global_item_unref(&rdev->mman.mem_global_ref);
103 rdev->mman.mem_global_referenced = true;
107 static void radeon_ttm_global_fini(struct radeon_device *rdev)
109 if (rdev->mman.mem_global_referenced) {
110 ttm_global_item_unref(&rdev->mman.bo_global_ref.ref);
111 ttm_global_item_unref(&rdev->mman.mem_global_ref);
112 rdev->mman.mem_global_referenced = false;
116 struct ttm_backend *radeon_ttm_backend_create(struct radeon_device *rdev);
118 static struct ttm_backend*
119 radeon_create_ttm_backend_entry(struct ttm_bo_device *bdev)
121 struct radeon_device *rdev;
123 rdev = radeon_get_rdev(bdev);
125 if (rdev->flags & RADEON_IS_AGP) {
126 return ttm_agp_backend_init(bdev, rdev->ddev->agp->bridge);
130 return radeon_ttm_backend_create(rdev);
134 static int radeon_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
139 static int radeon_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
140 struct ttm_mem_type_manager *man)
142 struct radeon_device *rdev;
144 rdev = radeon_get_rdev(bdev);
149 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
150 man->available_caching = TTM_PL_MASK_CACHING;
151 man->default_caching = TTM_PL_FLAG_CACHED;
154 man->gpu_offset = rdev->mc.gtt_start;
155 man->available_caching = TTM_PL_MASK_CACHING;
156 man->default_caching = TTM_PL_FLAG_CACHED;
157 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA;
159 if (rdev->flags & RADEON_IS_AGP) {
160 if (!(drm_core_has_AGP(rdev->ddev) && rdev->ddev->agp)) {
161 DRM_ERROR("AGP is not enabled for memory type %u\n",
165 man->io_offset = rdev->mc.agp_base;
166 man->io_size = rdev->mc.gtt_size;
168 if (!rdev->ddev->agp->cant_use_aperture)
169 man->flags = TTM_MEMTYPE_FLAG_NEEDS_IOREMAP |
170 TTM_MEMTYPE_FLAG_MAPPABLE;
171 man->available_caching = TTM_PL_FLAG_UNCACHED |
173 man->default_caching = TTM_PL_FLAG_WC;
183 /* "On-card" video ram */
184 man->gpu_offset = rdev->mc.vram_start;
185 man->flags = TTM_MEMTYPE_FLAG_FIXED |
186 TTM_MEMTYPE_FLAG_NEEDS_IOREMAP |
187 TTM_MEMTYPE_FLAG_MAPPABLE;
188 man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
189 man->default_caching = TTM_PL_FLAG_WC;
191 man->io_offset = rdev->mc.aper_base;
192 man->io_size = rdev->mc.aper_size;
195 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
201 static void radeon_evict_flags(struct ttm_buffer_object *bo,
202 struct ttm_placement *placement)
204 struct radeon_bo *rbo;
205 static u32 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
207 if (!radeon_ttm_bo_is_radeon_bo(bo)) {
210 placement->placement = &placements;
211 placement->busy_placement = &placements;
212 placement->num_placement = 1;
213 placement->num_busy_placement = 1;
216 rbo = container_of(bo, struct radeon_bo, tbo);
217 switch (bo->mem.mem_type) {
219 if (rbo->rdev->cp.ready == false)
220 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
222 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);
226 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
228 *placement = rbo->placement;
231 static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp)
236 static void radeon_move_null(struct ttm_buffer_object *bo,
237 struct ttm_mem_reg *new_mem)
239 struct ttm_mem_reg *old_mem = &bo->mem;
241 BUG_ON(old_mem->mm_node != NULL);
243 new_mem->mm_node = NULL;
246 static int radeon_move_blit(struct ttm_buffer_object *bo,
247 bool evict, int no_wait,
248 struct ttm_mem_reg *new_mem,
249 struct ttm_mem_reg *old_mem)
251 struct radeon_device *rdev;
252 uint64_t old_start, new_start;
253 struct radeon_fence *fence;
256 rdev = radeon_get_rdev(bo->bdev);
257 r = radeon_fence_create(rdev, &fence);
261 old_start = old_mem->mm_node->start << PAGE_SHIFT;
262 new_start = new_mem->mm_node->start << PAGE_SHIFT;
264 switch (old_mem->mem_type) {
266 old_start += rdev->mc.vram_start;
269 old_start += rdev->mc.gtt_start;
272 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
275 switch (new_mem->mem_type) {
277 new_start += rdev->mc.vram_start;
280 new_start += rdev->mc.gtt_start;
283 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
286 if (!rdev->cp.ready) {
287 DRM_ERROR("Trying to move memory with CP turned off.\n");
290 r = radeon_copy(rdev, old_start, new_start, new_mem->num_pages, fence);
291 /* FIXME: handle copy error */
292 r = ttm_bo_move_accel_cleanup(bo, (void *)fence, NULL,
293 evict, no_wait, new_mem);
294 radeon_fence_unref(&fence);
298 static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
299 bool evict, bool interruptible, bool no_wait,
300 struct ttm_mem_reg *new_mem)
302 struct radeon_device *rdev;
303 struct ttm_mem_reg *old_mem = &bo->mem;
304 struct ttm_mem_reg tmp_mem;
306 struct ttm_placement placement;
309 rdev = radeon_get_rdev(bo->bdev);
311 tmp_mem.mm_node = NULL;
314 placement.num_placement = 1;
315 placement.placement = &placements;
316 placement.num_busy_placement = 1;
317 placement.busy_placement = &placements;
318 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
319 r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
320 interruptible, no_wait);
325 r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement);
330 r = ttm_tt_bind(bo->ttm, &tmp_mem);
334 r = radeon_move_blit(bo, true, no_wait, &tmp_mem, old_mem);
338 r = ttm_bo_move_ttm(bo, true, no_wait, new_mem);
340 if (tmp_mem.mm_node) {
341 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
343 spin_lock(&glob->lru_lock);
344 drm_mm_put_block(tmp_mem.mm_node);
345 spin_unlock(&glob->lru_lock);
351 static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
352 bool evict, bool interruptible, bool no_wait,
353 struct ttm_mem_reg *new_mem)
355 struct radeon_device *rdev;
356 struct ttm_mem_reg *old_mem = &bo->mem;
357 struct ttm_mem_reg tmp_mem;
358 struct ttm_placement placement;
362 rdev = radeon_get_rdev(bo->bdev);
364 tmp_mem.mm_node = NULL;
367 placement.num_placement = 1;
368 placement.placement = &placements;
369 placement.num_busy_placement = 1;
370 placement.busy_placement = &placements;
371 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
372 r = ttm_bo_mem_space(bo, &placement, &tmp_mem, interruptible, no_wait);
376 r = ttm_bo_move_ttm(bo, true, no_wait, &tmp_mem);
380 r = radeon_move_blit(bo, true, no_wait, new_mem, old_mem);
385 if (tmp_mem.mm_node) {
386 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
388 spin_lock(&glob->lru_lock);
389 drm_mm_put_block(tmp_mem.mm_node);
390 spin_unlock(&glob->lru_lock);
396 static int radeon_bo_move(struct ttm_buffer_object *bo,
397 bool evict, bool interruptible, bool no_wait,
398 struct ttm_mem_reg *new_mem)
400 struct radeon_device *rdev;
401 struct ttm_mem_reg *old_mem = &bo->mem;
404 rdev = radeon_get_rdev(bo->bdev);
405 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
406 radeon_move_null(bo, new_mem);
409 if ((old_mem->mem_type == TTM_PL_TT &&
410 new_mem->mem_type == TTM_PL_SYSTEM) ||
411 (old_mem->mem_type == TTM_PL_SYSTEM &&
412 new_mem->mem_type == TTM_PL_TT)) {
414 radeon_move_null(bo, new_mem);
417 if (!rdev->cp.ready || rdev->asic->copy == NULL) {
422 if (old_mem->mem_type == TTM_PL_VRAM &&
423 new_mem->mem_type == TTM_PL_SYSTEM) {
424 r = radeon_move_vram_ram(bo, evict, interruptible,
426 } else if (old_mem->mem_type == TTM_PL_SYSTEM &&
427 new_mem->mem_type == TTM_PL_VRAM) {
428 r = radeon_move_ram_vram(bo, evict, interruptible,
431 r = radeon_move_blit(bo, evict, no_wait, new_mem, old_mem);
436 r = ttm_bo_move_memcpy(bo, evict, no_wait, new_mem);
442 static int radeon_sync_obj_wait(void *sync_obj, void *sync_arg,
443 bool lazy, bool interruptible)
445 return radeon_fence_wait((struct radeon_fence *)sync_obj, interruptible);
448 static int radeon_sync_obj_flush(void *sync_obj, void *sync_arg)
453 static void radeon_sync_obj_unref(void **sync_obj)
455 radeon_fence_unref((struct radeon_fence **)sync_obj);
458 static void *radeon_sync_obj_ref(void *sync_obj)
460 return radeon_fence_ref((struct radeon_fence *)sync_obj);
463 static bool radeon_sync_obj_signaled(void *sync_obj, void *sync_arg)
465 return radeon_fence_signaled((struct radeon_fence *)sync_obj);
468 static struct ttm_bo_driver radeon_bo_driver = {
469 .create_ttm_backend_entry = &radeon_create_ttm_backend_entry,
470 .invalidate_caches = &radeon_invalidate_caches,
471 .init_mem_type = &radeon_init_mem_type,
472 .evict_flags = &radeon_evict_flags,
473 .move = &radeon_bo_move,
474 .verify_access = &radeon_verify_access,
475 .sync_obj_signaled = &radeon_sync_obj_signaled,
476 .sync_obj_wait = &radeon_sync_obj_wait,
477 .sync_obj_flush = &radeon_sync_obj_flush,
478 .sync_obj_unref = &radeon_sync_obj_unref,
479 .sync_obj_ref = &radeon_sync_obj_ref,
480 .move_notify = &radeon_bo_move_notify,
481 .fault_reserve_notify = &radeon_bo_fault_reserve_notify,
484 int radeon_ttm_init(struct radeon_device *rdev)
488 r = radeon_ttm_global_init(rdev);
492 /* No others user of address space so set it to 0 */
493 r = ttm_bo_device_init(&rdev->mman.bdev,
494 rdev->mman.bo_global_ref.ref.object,
495 &radeon_bo_driver, DRM_FILE_PAGE_OFFSET,
498 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
501 rdev->mman.initialized = true;
502 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_VRAM,
503 rdev->mc.real_vram_size >> PAGE_SHIFT);
505 DRM_ERROR("Failed initializing VRAM heap.\n");
508 r = radeon_bo_create(rdev, NULL, 256 * 1024, true,
509 RADEON_GEM_DOMAIN_VRAM,
510 &rdev->stollen_vga_memory);
514 r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
517 r = radeon_bo_pin(rdev->stollen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL);
518 radeon_bo_unreserve(rdev->stollen_vga_memory);
520 radeon_bo_unref(&rdev->stollen_vga_memory);
523 DRM_INFO("radeon: %uM of VRAM memory ready\n",
524 (unsigned)rdev->mc.real_vram_size / (1024 * 1024));
525 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_TT,
526 rdev->mc.gtt_size >> PAGE_SHIFT);
528 DRM_ERROR("Failed initializing GTT heap.\n");
531 DRM_INFO("radeon: %uM of GTT memory ready.\n",
532 (unsigned)(rdev->mc.gtt_size / (1024 * 1024)));
533 if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) {
534 rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping;
537 r = radeon_ttm_debugfs_init(rdev);
539 DRM_ERROR("Failed to init debugfs\n");
545 void radeon_ttm_fini(struct radeon_device *rdev)
549 if (!rdev->mman.initialized)
551 if (rdev->stollen_vga_memory) {
552 r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
554 radeon_bo_unpin(rdev->stollen_vga_memory);
555 radeon_bo_unreserve(rdev->stollen_vga_memory);
557 radeon_bo_unref(&rdev->stollen_vga_memory);
559 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_VRAM);
560 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_TT);
561 ttm_bo_device_release(&rdev->mman.bdev);
562 radeon_gart_fini(rdev);
563 radeon_ttm_global_fini(rdev);
564 rdev->mman.initialized = false;
565 DRM_INFO("radeon: ttm finalized\n");
568 static struct vm_operations_struct radeon_ttm_vm_ops;
569 static const struct vm_operations_struct *ttm_vm_ops = NULL;
571 static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
573 struct ttm_buffer_object *bo;
576 bo = (struct ttm_buffer_object *)vma->vm_private_data;
578 return VM_FAULT_NOPAGE;
580 r = ttm_vm_ops->fault(vma, vmf);
584 int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
586 struct drm_file *file_priv;
587 struct radeon_device *rdev;
590 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
591 return drm_mmap(filp, vma);
594 file_priv = (struct drm_file *)filp->private_data;
595 rdev = file_priv->minor->dev->dev_private;
599 r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev);
600 if (unlikely(r != 0)) {
603 if (unlikely(ttm_vm_ops == NULL)) {
604 ttm_vm_ops = vma->vm_ops;
605 radeon_ttm_vm_ops = *ttm_vm_ops;
606 radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
608 vma->vm_ops = &radeon_ttm_vm_ops;
614 * TTM backend functions.
616 struct radeon_ttm_backend {
617 struct ttm_backend backend;
618 struct radeon_device *rdev;
619 unsigned long num_pages;
621 struct page *dummy_read_page;
627 static int radeon_ttm_backend_populate(struct ttm_backend *backend,
628 unsigned long num_pages,
630 struct page *dummy_read_page)
632 struct radeon_ttm_backend *gtt;
634 gtt = container_of(backend, struct radeon_ttm_backend, backend);
636 gtt->num_pages = num_pages;
637 gtt->dummy_read_page = dummy_read_page;
638 gtt->populated = true;
642 static void radeon_ttm_backend_clear(struct ttm_backend *backend)
644 struct radeon_ttm_backend *gtt;
646 gtt = container_of(backend, struct radeon_ttm_backend, backend);
649 gtt->dummy_read_page = NULL;
650 gtt->populated = false;
655 static int radeon_ttm_backend_bind(struct ttm_backend *backend,
656 struct ttm_mem_reg *bo_mem)
658 struct radeon_ttm_backend *gtt;
661 gtt = container_of(backend, struct radeon_ttm_backend, backend);
662 gtt->offset = bo_mem->mm_node->start << PAGE_SHIFT;
663 if (!gtt->num_pages) {
664 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n", gtt->num_pages, bo_mem, backend);
666 r = radeon_gart_bind(gtt->rdev, gtt->offset,
667 gtt->num_pages, gtt->pages);
669 DRM_ERROR("failed to bind %lu pages at 0x%08X\n",
670 gtt->num_pages, gtt->offset);
677 static int radeon_ttm_backend_unbind(struct ttm_backend *backend)
679 struct radeon_ttm_backend *gtt;
681 gtt = container_of(backend, struct radeon_ttm_backend, backend);
682 radeon_gart_unbind(gtt->rdev, gtt->offset, gtt->num_pages);
687 static void radeon_ttm_backend_destroy(struct ttm_backend *backend)
689 struct radeon_ttm_backend *gtt;
691 gtt = container_of(backend, struct radeon_ttm_backend, backend);
693 radeon_ttm_backend_unbind(backend);
698 static struct ttm_backend_func radeon_backend_func = {
699 .populate = &radeon_ttm_backend_populate,
700 .clear = &radeon_ttm_backend_clear,
701 .bind = &radeon_ttm_backend_bind,
702 .unbind = &radeon_ttm_backend_unbind,
703 .destroy = &radeon_ttm_backend_destroy,
706 struct ttm_backend *radeon_ttm_backend_create(struct radeon_device *rdev)
708 struct radeon_ttm_backend *gtt;
710 gtt = kzalloc(sizeof(struct radeon_ttm_backend), GFP_KERNEL);
714 gtt->backend.bdev = &rdev->mman.bdev;
715 gtt->backend.flags = 0;
716 gtt->backend.func = &radeon_backend_func;
720 gtt->dummy_read_page = NULL;
721 gtt->populated = false;
723 return >t->backend;
726 #define RADEON_DEBUGFS_MEM_TYPES 2
728 #if defined(CONFIG_DEBUG_FS)
729 static int radeon_mm_dump_table(struct seq_file *m, void *data)
731 struct drm_info_node *node = (struct drm_info_node *)m->private;
732 struct drm_mm *mm = (struct drm_mm *)node->info_ent->data;
733 struct drm_device *dev = node->minor->dev;
734 struct radeon_device *rdev = dev->dev_private;
736 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
738 spin_lock(&glob->lru_lock);
739 ret = drm_mm_dump_table(m, mm);
740 spin_unlock(&glob->lru_lock);
745 static int radeon_ttm_debugfs_init(struct radeon_device *rdev)
747 #if defined(CONFIG_DEBUG_FS)
748 static struct drm_info_list radeon_mem_types_list[RADEON_DEBUGFS_MEM_TYPES];
749 static char radeon_mem_types_names[RADEON_DEBUGFS_MEM_TYPES][32];
752 for (i = 0; i < RADEON_DEBUGFS_MEM_TYPES; i++) {
754 sprintf(radeon_mem_types_names[i], "radeon_vram_mm");
756 sprintf(radeon_mem_types_names[i], "radeon_gtt_mm");
757 radeon_mem_types_list[i].name = radeon_mem_types_names[i];
758 radeon_mem_types_list[i].show = &radeon_mm_dump_table;
759 radeon_mem_types_list[i].driver_features = 0;
761 radeon_mem_types_list[i].data = &rdev->mman.bdev.man[TTM_PL_VRAM].manager;
763 radeon_mem_types_list[i].data = &rdev->mman.bdev.man[TTM_PL_TT].manager;
766 return radeon_debugfs_add_files(rdev, radeon_mem_types_list, RADEON_DEBUGFS_MEM_TYPES);