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>
36 #include <ttm/ttm_page_alloc.h>
38 #include <drm/radeon_drm.h>
39 #include <linux/seq_file.h>
40 #include <linux/slab.h>
41 #include <linux/swiotlb.h>
42 #include <linux/debugfs.h>
43 #include "radeon_reg.h"
46 #define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT)
48 static int radeon_ttm_debugfs_init(struct radeon_device *rdev);
49 static void radeon_ttm_debugfs_fini(struct radeon_device *rdev);
51 static struct radeon_device *radeon_get_rdev(struct ttm_bo_device *bdev)
53 struct radeon_mman *mman;
54 struct radeon_device *rdev;
56 mman = container_of(bdev, struct radeon_mman, bdev);
57 rdev = container_of(mman, struct radeon_device, mman);
65 static int radeon_ttm_mem_global_init(struct drm_global_reference *ref)
67 return ttm_mem_global_init(ref->object);
70 static void radeon_ttm_mem_global_release(struct drm_global_reference *ref)
72 ttm_mem_global_release(ref->object);
75 static int radeon_ttm_global_init(struct radeon_device *rdev)
77 struct drm_global_reference *global_ref;
80 rdev->mman.mem_global_referenced = false;
81 global_ref = &rdev->mman.mem_global_ref;
82 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
83 global_ref->size = sizeof(struct ttm_mem_global);
84 global_ref->init = &radeon_ttm_mem_global_init;
85 global_ref->release = &radeon_ttm_mem_global_release;
86 r = drm_global_item_ref(global_ref);
88 DRM_ERROR("Failed setting up TTM memory accounting "
93 rdev->mman.bo_global_ref.mem_glob =
94 rdev->mman.mem_global_ref.object;
95 global_ref = &rdev->mman.bo_global_ref.ref;
96 global_ref->global_type = DRM_GLOBAL_TTM_BO;
97 global_ref->size = sizeof(struct ttm_bo_global);
98 global_ref->init = &ttm_bo_global_init;
99 global_ref->release = &ttm_bo_global_release;
100 r = drm_global_item_ref(global_ref);
102 DRM_ERROR("Failed setting up TTM BO subsystem.\n");
103 drm_global_item_unref(&rdev->mman.mem_global_ref);
107 rdev->mman.mem_global_referenced = true;
111 static void radeon_ttm_global_fini(struct radeon_device *rdev)
113 if (rdev->mman.mem_global_referenced) {
114 drm_global_item_unref(&rdev->mman.bo_global_ref.ref);
115 drm_global_item_unref(&rdev->mman.mem_global_ref);
116 rdev->mman.mem_global_referenced = false;
120 static int radeon_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
125 static int radeon_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
126 struct ttm_mem_type_manager *man)
128 struct radeon_device *rdev;
130 rdev = radeon_get_rdev(bdev);
135 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
136 man->available_caching = TTM_PL_MASK_CACHING;
137 man->default_caching = TTM_PL_FLAG_CACHED;
140 man->func = &ttm_bo_manager_func;
141 man->gpu_offset = rdev->mc.gtt_start;
142 man->available_caching = TTM_PL_MASK_CACHING;
143 man->default_caching = TTM_PL_FLAG_CACHED;
144 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA;
146 if (rdev->flags & RADEON_IS_AGP) {
147 if (!rdev->ddev->agp) {
148 DRM_ERROR("AGP is not enabled for memory type %u\n",
152 if (!rdev->ddev->agp->cant_use_aperture)
153 man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
154 man->available_caching = TTM_PL_FLAG_UNCACHED |
156 man->default_caching = TTM_PL_FLAG_WC;
161 /* "On-card" video ram */
162 man->func = &ttm_bo_manager_func;
163 man->gpu_offset = rdev->mc.vram_start;
164 man->flags = TTM_MEMTYPE_FLAG_FIXED |
165 TTM_MEMTYPE_FLAG_MAPPABLE;
166 man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
167 man->default_caching = TTM_PL_FLAG_WC;
170 DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
176 static void radeon_evict_flags(struct ttm_buffer_object *bo,
177 struct ttm_placement *placement)
179 struct radeon_bo *rbo;
180 static u32 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
182 if (!radeon_ttm_bo_is_radeon_bo(bo)) {
185 placement->placement = &placements;
186 placement->busy_placement = &placements;
187 placement->num_placement = 1;
188 placement->num_busy_placement = 1;
191 rbo = container_of(bo, struct radeon_bo, tbo);
192 switch (bo->mem.mem_type) {
194 if (rbo->rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready == false)
195 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
197 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT);
201 radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU);
203 *placement = rbo->placement;
206 static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp)
208 struct radeon_bo *rbo = container_of(bo, struct radeon_bo, tbo);
210 return drm_vma_node_verify_access(&rbo->gem_base.vma_node, filp);
213 static void radeon_move_null(struct ttm_buffer_object *bo,
214 struct ttm_mem_reg *new_mem)
216 struct ttm_mem_reg *old_mem = &bo->mem;
218 BUG_ON(old_mem->mm_node != NULL);
220 new_mem->mm_node = NULL;
223 static int radeon_move_blit(struct ttm_buffer_object *bo,
224 bool evict, bool no_wait_gpu,
225 struct ttm_mem_reg *new_mem,
226 struct ttm_mem_reg *old_mem)
228 struct radeon_device *rdev;
229 uint64_t old_start, new_start;
230 struct radeon_fence *fence;
233 rdev = radeon_get_rdev(bo->bdev);
234 ridx = radeon_copy_ring_index(rdev);
235 old_start = old_mem->start << PAGE_SHIFT;
236 new_start = new_mem->start << PAGE_SHIFT;
238 switch (old_mem->mem_type) {
240 old_start += rdev->mc.vram_start;
243 old_start += rdev->mc.gtt_start;
246 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
249 switch (new_mem->mem_type) {
251 new_start += rdev->mc.vram_start;
254 new_start += rdev->mc.gtt_start;
257 DRM_ERROR("Unknown placement %d\n", old_mem->mem_type);
260 if (!rdev->ring[ridx].ready) {
261 DRM_ERROR("Trying to move memory with ring turned off.\n");
265 BUILD_BUG_ON((PAGE_SIZE % RADEON_GPU_PAGE_SIZE) != 0);
267 /* sync other rings */
268 fence = bo->sync_obj;
269 r = radeon_copy(rdev, old_start, new_start,
270 new_mem->num_pages * (PAGE_SIZE / RADEON_GPU_PAGE_SIZE), /* GPU pages */
272 /* FIXME: handle copy error */
273 r = ttm_bo_move_accel_cleanup(bo, (void *)fence,
274 evict, no_wait_gpu, new_mem);
275 radeon_fence_unref(&fence);
279 static int radeon_move_vram_ram(struct ttm_buffer_object *bo,
280 bool evict, bool interruptible,
282 struct ttm_mem_reg *new_mem)
284 struct radeon_device *rdev;
285 struct ttm_mem_reg *old_mem = &bo->mem;
286 struct ttm_mem_reg tmp_mem;
288 struct ttm_placement placement;
291 rdev = radeon_get_rdev(bo->bdev);
293 tmp_mem.mm_node = NULL;
296 placement.num_placement = 1;
297 placement.placement = &placements;
298 placement.num_busy_placement = 1;
299 placement.busy_placement = &placements;
300 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
301 r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
302 interruptible, no_wait_gpu);
307 r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement);
312 r = ttm_tt_bind(bo->ttm, &tmp_mem);
316 r = radeon_move_blit(bo, true, no_wait_gpu, &tmp_mem, old_mem);
320 r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem);
322 ttm_bo_mem_put(bo, &tmp_mem);
326 static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
327 bool evict, bool interruptible,
329 struct ttm_mem_reg *new_mem)
331 struct radeon_device *rdev;
332 struct ttm_mem_reg *old_mem = &bo->mem;
333 struct ttm_mem_reg tmp_mem;
334 struct ttm_placement placement;
338 rdev = radeon_get_rdev(bo->bdev);
340 tmp_mem.mm_node = NULL;
343 placement.num_placement = 1;
344 placement.placement = &placements;
345 placement.num_busy_placement = 1;
346 placement.busy_placement = &placements;
347 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT;
348 r = ttm_bo_mem_space(bo, &placement, &tmp_mem,
349 interruptible, no_wait_gpu);
353 r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem);
357 r = radeon_move_blit(bo, true, no_wait_gpu, new_mem, old_mem);
362 ttm_bo_mem_put(bo, &tmp_mem);
366 static int radeon_bo_move(struct ttm_buffer_object *bo,
367 bool evict, bool interruptible,
369 struct ttm_mem_reg *new_mem)
371 struct radeon_device *rdev;
372 struct ttm_mem_reg *old_mem = &bo->mem;
375 rdev = radeon_get_rdev(bo->bdev);
376 if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
377 radeon_move_null(bo, new_mem);
380 if ((old_mem->mem_type == TTM_PL_TT &&
381 new_mem->mem_type == TTM_PL_SYSTEM) ||
382 (old_mem->mem_type == TTM_PL_SYSTEM &&
383 new_mem->mem_type == TTM_PL_TT)) {
385 radeon_move_null(bo, new_mem);
388 if (!rdev->ring[radeon_copy_ring_index(rdev)].ready ||
389 rdev->asic->copy.copy == NULL) {
394 if (old_mem->mem_type == TTM_PL_VRAM &&
395 new_mem->mem_type == TTM_PL_SYSTEM) {
396 r = radeon_move_vram_ram(bo, evict, interruptible,
397 no_wait_gpu, new_mem);
398 } else if (old_mem->mem_type == TTM_PL_SYSTEM &&
399 new_mem->mem_type == TTM_PL_VRAM) {
400 r = radeon_move_ram_vram(bo, evict, interruptible,
401 no_wait_gpu, new_mem);
403 r = radeon_move_blit(bo, evict, no_wait_gpu, new_mem, old_mem);
408 r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem);
414 /* update statistics */
415 atomic64_add((u64)bo->num_pages << PAGE_SHIFT, &rdev->num_bytes_moved);
419 static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
421 struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
422 struct radeon_device *rdev = radeon_get_rdev(bdev);
424 mem->bus.addr = NULL;
426 mem->bus.size = mem->num_pages << PAGE_SHIFT;
428 mem->bus.is_iomem = false;
429 if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
431 switch (mem->mem_type) {
437 if (rdev->flags & RADEON_IS_AGP) {
438 /* RADEON_IS_AGP is set only if AGP is active */
439 mem->bus.offset = mem->start << PAGE_SHIFT;
440 mem->bus.base = rdev->mc.agp_base;
441 mem->bus.is_iomem = !rdev->ddev->agp->cant_use_aperture;
446 mem->bus.offset = mem->start << PAGE_SHIFT;
447 /* check if it's visible */
448 if ((mem->bus.offset + mem->bus.size) > rdev->mc.visible_vram_size)
450 mem->bus.base = rdev->mc.aper_base;
451 mem->bus.is_iomem = true;
454 * Alpha: use bus.addr to hold the ioremap() return,
455 * so we can modify bus.base below.
457 if (mem->placement & TTM_PL_FLAG_WC)
459 ioremap_wc(mem->bus.base + mem->bus.offset,
463 ioremap_nocache(mem->bus.base + mem->bus.offset,
467 * Alpha: Use just the bus offset plus
468 * the hose/domain memory base for bus.base.
469 * It then can be used to build PTEs for VRAM
470 * access, as done in ttm_bo_vm_fault().
472 mem->bus.base = (mem->bus.base & 0x0ffffffffUL) +
473 rdev->ddev->hose->dense_mem_base;
482 static void radeon_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem)
486 static int radeon_sync_obj_wait(void *sync_obj, bool lazy, bool interruptible)
488 return radeon_fence_wait((struct radeon_fence *)sync_obj, interruptible);
491 static int radeon_sync_obj_flush(void *sync_obj)
496 static void radeon_sync_obj_unref(void **sync_obj)
498 radeon_fence_unref((struct radeon_fence **)sync_obj);
501 static void *radeon_sync_obj_ref(void *sync_obj)
503 return radeon_fence_ref((struct radeon_fence *)sync_obj);
506 static bool radeon_sync_obj_signaled(void *sync_obj)
508 return radeon_fence_signaled((struct radeon_fence *)sync_obj);
512 * TTM backend functions.
514 struct radeon_ttm_tt {
515 struct ttm_dma_tt ttm;
516 struct radeon_device *rdev;
520 static int radeon_ttm_backend_bind(struct ttm_tt *ttm,
521 struct ttm_mem_reg *bo_mem)
523 struct radeon_ttm_tt *gtt = (void*)ttm;
526 gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT);
527 if (!ttm->num_pages) {
528 WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n",
529 ttm->num_pages, bo_mem, ttm);
531 r = radeon_gart_bind(gtt->rdev, gtt->offset,
532 ttm->num_pages, ttm->pages, gtt->ttm.dma_address);
534 DRM_ERROR("failed to bind %lu pages at 0x%08X\n",
535 ttm->num_pages, (unsigned)gtt->offset);
541 static int radeon_ttm_backend_unbind(struct ttm_tt *ttm)
543 struct radeon_ttm_tt *gtt = (void *)ttm;
545 radeon_gart_unbind(gtt->rdev, gtt->offset, ttm->num_pages);
549 static void radeon_ttm_backend_destroy(struct ttm_tt *ttm)
551 struct radeon_ttm_tt *gtt = (void *)ttm;
553 ttm_dma_tt_fini(>t->ttm);
557 static struct ttm_backend_func radeon_backend_func = {
558 .bind = &radeon_ttm_backend_bind,
559 .unbind = &radeon_ttm_backend_unbind,
560 .destroy = &radeon_ttm_backend_destroy,
563 static struct ttm_tt *radeon_ttm_tt_create(struct ttm_bo_device *bdev,
564 unsigned long size, uint32_t page_flags,
565 struct page *dummy_read_page)
567 struct radeon_device *rdev;
568 struct radeon_ttm_tt *gtt;
570 rdev = radeon_get_rdev(bdev);
572 if (rdev->flags & RADEON_IS_AGP) {
573 return ttm_agp_tt_create(bdev, rdev->ddev->agp->bridge,
574 size, page_flags, dummy_read_page);
578 gtt = kzalloc(sizeof(struct radeon_ttm_tt), GFP_KERNEL);
582 gtt->ttm.ttm.func = &radeon_backend_func;
584 if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags, dummy_read_page)) {
588 return >t->ttm.ttm;
591 static int radeon_ttm_tt_populate(struct ttm_tt *ttm)
593 struct radeon_device *rdev;
594 struct radeon_ttm_tt *gtt = (void *)ttm;
597 bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
599 if (ttm->state != tt_unpopulated)
602 if (slave && ttm->sg) {
603 drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages,
604 gtt->ttm.dma_address, ttm->num_pages);
605 ttm->state = tt_unbound;
609 rdev = radeon_get_rdev(ttm->bdev);
611 if (rdev->flags & RADEON_IS_AGP) {
612 return ttm_agp_tt_populate(ttm);
616 #ifdef CONFIG_SWIOTLB
617 if (swiotlb_nr_tbl()) {
618 return ttm_dma_populate(>t->ttm, rdev->dev);
622 r = ttm_pool_populate(ttm);
627 for (i = 0; i < ttm->num_pages; i++) {
628 gtt->ttm.dma_address[i] = pci_map_page(rdev->pdev, ttm->pages[i],
630 PCI_DMA_BIDIRECTIONAL);
631 if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) {
633 pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
634 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
635 gtt->ttm.dma_address[i] = 0;
637 ttm_pool_unpopulate(ttm);
644 static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm)
646 struct radeon_device *rdev;
647 struct radeon_ttm_tt *gtt = (void *)ttm;
649 bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG);
654 rdev = radeon_get_rdev(ttm->bdev);
656 if (rdev->flags & RADEON_IS_AGP) {
657 ttm_agp_tt_unpopulate(ttm);
662 #ifdef CONFIG_SWIOTLB
663 if (swiotlb_nr_tbl()) {
664 ttm_dma_unpopulate(>t->ttm, rdev->dev);
669 for (i = 0; i < ttm->num_pages; i++) {
670 if (gtt->ttm.dma_address[i]) {
671 pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i],
672 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
676 ttm_pool_unpopulate(ttm);
679 static struct ttm_bo_driver radeon_bo_driver = {
680 .ttm_tt_create = &radeon_ttm_tt_create,
681 .ttm_tt_populate = &radeon_ttm_tt_populate,
682 .ttm_tt_unpopulate = &radeon_ttm_tt_unpopulate,
683 .invalidate_caches = &radeon_invalidate_caches,
684 .init_mem_type = &radeon_init_mem_type,
685 .evict_flags = &radeon_evict_flags,
686 .move = &radeon_bo_move,
687 .verify_access = &radeon_verify_access,
688 .sync_obj_signaled = &radeon_sync_obj_signaled,
689 .sync_obj_wait = &radeon_sync_obj_wait,
690 .sync_obj_flush = &radeon_sync_obj_flush,
691 .sync_obj_unref = &radeon_sync_obj_unref,
692 .sync_obj_ref = &radeon_sync_obj_ref,
693 .move_notify = &radeon_bo_move_notify,
694 .fault_reserve_notify = &radeon_bo_fault_reserve_notify,
695 .io_mem_reserve = &radeon_ttm_io_mem_reserve,
696 .io_mem_free = &radeon_ttm_io_mem_free,
699 int radeon_ttm_init(struct radeon_device *rdev)
703 r = radeon_ttm_global_init(rdev);
707 /* No others user of address space so set it to 0 */
708 r = ttm_bo_device_init(&rdev->mman.bdev,
709 rdev->mman.bo_global_ref.ref.object,
711 rdev->ddev->anon_inode->i_mapping,
712 DRM_FILE_PAGE_OFFSET,
715 DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
718 rdev->mman.initialized = true;
719 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_VRAM,
720 rdev->mc.real_vram_size >> PAGE_SHIFT);
722 DRM_ERROR("Failed initializing VRAM heap.\n");
725 /* Change the size here instead of the init above so only lpfn is affected */
726 radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size);
728 r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true,
729 RADEON_GEM_DOMAIN_VRAM,
730 NULL, &rdev->stollen_vga_memory);
734 r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
737 r = radeon_bo_pin(rdev->stollen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL);
738 radeon_bo_unreserve(rdev->stollen_vga_memory);
740 radeon_bo_unref(&rdev->stollen_vga_memory);
743 DRM_INFO("radeon: %uM of VRAM memory ready\n",
744 (unsigned) (rdev->mc.real_vram_size / (1024 * 1024)));
745 r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_TT,
746 rdev->mc.gtt_size >> PAGE_SHIFT);
748 DRM_ERROR("Failed initializing GTT heap.\n");
751 DRM_INFO("radeon: %uM of GTT memory ready.\n",
752 (unsigned)(rdev->mc.gtt_size / (1024 * 1024)));
754 r = radeon_ttm_debugfs_init(rdev);
756 DRM_ERROR("Failed to init debugfs\n");
762 void radeon_ttm_fini(struct radeon_device *rdev)
766 if (!rdev->mman.initialized)
768 radeon_ttm_debugfs_fini(rdev);
769 if (rdev->stollen_vga_memory) {
770 r = radeon_bo_reserve(rdev->stollen_vga_memory, false);
772 radeon_bo_unpin(rdev->stollen_vga_memory);
773 radeon_bo_unreserve(rdev->stollen_vga_memory);
775 radeon_bo_unref(&rdev->stollen_vga_memory);
777 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_VRAM);
778 ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_TT);
779 ttm_bo_device_release(&rdev->mman.bdev);
780 radeon_gart_fini(rdev);
781 radeon_ttm_global_fini(rdev);
782 rdev->mman.initialized = false;
783 DRM_INFO("radeon: ttm finalized\n");
786 /* this should only be called at bootup or when userspace
788 void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size)
790 struct ttm_mem_type_manager *man;
792 if (!rdev->mman.initialized)
795 man = &rdev->mman.bdev.man[TTM_PL_VRAM];
796 /* this just adjusts TTM size idea, which sets lpfn to the correct value */
797 man->size = size >> PAGE_SHIFT;
800 static struct vm_operations_struct radeon_ttm_vm_ops;
801 static const struct vm_operations_struct *ttm_vm_ops = NULL;
803 static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
805 struct ttm_buffer_object *bo;
806 struct radeon_device *rdev;
809 bo = (struct ttm_buffer_object *)vma->vm_private_data;
811 return VM_FAULT_NOPAGE;
813 rdev = radeon_get_rdev(bo->bdev);
814 down_read(&rdev->pm.mclk_lock);
815 r = ttm_vm_ops->fault(vma, vmf);
816 up_read(&rdev->pm.mclk_lock);
820 int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
822 struct drm_file *file_priv;
823 struct radeon_device *rdev;
826 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
827 return drm_mmap(filp, vma);
830 file_priv = filp->private_data;
831 rdev = file_priv->minor->dev->dev_private;
835 r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev);
836 if (unlikely(r != 0)) {
839 if (unlikely(ttm_vm_ops == NULL)) {
840 ttm_vm_ops = vma->vm_ops;
841 radeon_ttm_vm_ops = *ttm_vm_ops;
842 radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
844 vma->vm_ops = &radeon_ttm_vm_ops;
848 #if defined(CONFIG_DEBUG_FS)
850 static int radeon_mm_dump_table(struct seq_file *m, void *data)
852 struct drm_info_node *node = (struct drm_info_node *)m->private;
853 unsigned ttm_pl = *(int *)node->info_ent->data;
854 struct drm_device *dev = node->minor->dev;
855 struct radeon_device *rdev = dev->dev_private;
856 struct drm_mm *mm = (struct drm_mm *)rdev->mman.bdev.man[ttm_pl].priv;
858 struct ttm_bo_global *glob = rdev->mman.bdev.glob;
860 spin_lock(&glob->lru_lock);
861 ret = drm_mm_dump_table(m, mm);
862 spin_unlock(&glob->lru_lock);
866 static int ttm_pl_vram = TTM_PL_VRAM;
867 static int ttm_pl_tt = TTM_PL_TT;
869 static struct drm_info_list radeon_ttm_debugfs_list[] = {
870 {"radeon_vram_mm", radeon_mm_dump_table, 0, &ttm_pl_vram},
871 {"radeon_gtt_mm", radeon_mm_dump_table, 0, &ttm_pl_tt},
872 {"ttm_page_pool", ttm_page_alloc_debugfs, 0, NULL},
873 #ifdef CONFIG_SWIOTLB
874 {"ttm_dma_page_pool", ttm_dma_page_alloc_debugfs, 0, NULL}
878 static int radeon_ttm_vram_open(struct inode *inode, struct file *filep)
880 struct radeon_device *rdev = inode->i_private;
881 i_size_write(inode, rdev->mc.mc_vram_size);
882 filep->private_data = inode->i_private;
886 static ssize_t radeon_ttm_vram_read(struct file *f, char __user *buf,
887 size_t size, loff_t *pos)
889 struct radeon_device *rdev = f->private_data;
893 if (size & 0x3 || *pos & 0x3)
900 if (*pos >= rdev->mc.mc_vram_size)
903 spin_lock_irqsave(&rdev->mmio_idx_lock, flags);
904 WREG32(RADEON_MM_INDEX, ((uint32_t)*pos) | 0x80000000);
905 if (rdev->family >= CHIP_CEDAR)
906 WREG32(EVERGREEN_MM_INDEX_HI, *pos >> 31);
907 value = RREG32(RADEON_MM_DATA);
908 spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags);
910 r = put_user(value, (uint32_t *)buf);
923 static const struct file_operations radeon_ttm_vram_fops = {
924 .owner = THIS_MODULE,
925 .open = radeon_ttm_vram_open,
926 .read = radeon_ttm_vram_read,
927 .llseek = default_llseek
930 static int radeon_ttm_gtt_open(struct inode *inode, struct file *filep)
932 struct radeon_device *rdev = inode->i_private;
933 i_size_write(inode, rdev->mc.gtt_size);
934 filep->private_data = inode->i_private;
938 static ssize_t radeon_ttm_gtt_read(struct file *f, char __user *buf,
939 size_t size, loff_t *pos)
941 struct radeon_device *rdev = f->private_data;
946 loff_t p = *pos / PAGE_SIZE;
947 unsigned off = *pos & ~PAGE_MASK;
948 size_t cur_size = min_t(size_t, size, PAGE_SIZE - off);
952 if (p >= rdev->gart.num_cpu_pages)
955 page = rdev->gart.pages[p];
960 r = copy_to_user(buf, ptr, cur_size);
961 kunmap(rdev->gart.pages[p]);
963 r = clear_user(buf, cur_size);
977 static const struct file_operations radeon_ttm_gtt_fops = {
978 .owner = THIS_MODULE,
979 .open = radeon_ttm_gtt_open,
980 .read = radeon_ttm_gtt_read,
981 .llseek = default_llseek
986 static int radeon_ttm_debugfs_init(struct radeon_device *rdev)
988 #if defined(CONFIG_DEBUG_FS)
991 struct drm_minor *minor = rdev->ddev->primary;
992 struct dentry *ent, *root = minor->debugfs_root;
994 ent = debugfs_create_file("radeon_vram", S_IFREG | S_IRUGO, root,
995 rdev, &radeon_ttm_vram_fops);
998 rdev->mman.vram = ent;
1000 ent = debugfs_create_file("radeon_gtt", S_IFREG | S_IRUGO, root,
1001 rdev, &radeon_ttm_gtt_fops);
1003 return PTR_ERR(ent);
1004 rdev->mman.gtt = ent;
1006 count = ARRAY_SIZE(radeon_ttm_debugfs_list);
1008 #ifdef CONFIG_SWIOTLB
1009 if (!swiotlb_nr_tbl())
1013 return radeon_debugfs_add_files(rdev, radeon_ttm_debugfs_list, count);
1020 static void radeon_ttm_debugfs_fini(struct radeon_device *rdev)
1022 #if defined(CONFIG_DEBUG_FS)
1024 debugfs_remove(rdev->mman.vram);
1025 rdev->mman.vram = NULL;
1027 debugfs_remove(rdev->mman.gtt);
1028 rdev->mman.gtt = NULL;