/* * Copyright 2009 Jerome Glisse. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * */ /* * Authors: * Jerome Glisse * Thomas Hellstrom * Dave Airlie */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "radeon_reg.h" #include "radeon.h" #include "radeon_ttm.h" static int radeon_ttm_debugfs_init(struct radeon_device *rdev); static void radeon_ttm_debugfs_fini(struct radeon_device *rdev); static int radeon_ttm_tt_bind(struct ttm_device *bdev, struct ttm_tt *ttm, struct ttm_resource *bo_mem); static void radeon_ttm_tt_unbind(struct ttm_device *bdev, struct ttm_tt *ttm); struct radeon_device *radeon_get_rdev(struct ttm_device *bdev) { struct radeon_mman *mman; struct radeon_device *rdev; mman = container_of(bdev, struct radeon_mman, bdev); rdev = container_of(mman, struct radeon_device, mman); return rdev; } static int radeon_ttm_init_vram(struct radeon_device *rdev) { return ttm_range_man_init(&rdev->mman.bdev, TTM_PL_VRAM, false, rdev->mc.real_vram_size >> PAGE_SHIFT); } static int radeon_ttm_init_gtt(struct radeon_device *rdev) { return ttm_range_man_init(&rdev->mman.bdev, TTM_PL_TT, true, rdev->mc.gtt_size >> PAGE_SHIFT); } static void radeon_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *placement) { static const struct ttm_place placements = { .fpfn = 0, .lpfn = 0, .mem_type = TTM_PL_SYSTEM, .flags = 0 }; struct radeon_bo *rbo; if (!radeon_ttm_bo_is_radeon_bo(bo)) { placement->placement = &placements; placement->busy_placement = &placements; placement->num_placement = 1; placement->num_busy_placement = 1; return; } rbo = container_of(bo, struct radeon_bo, tbo); switch (bo->mem.mem_type) { case TTM_PL_VRAM: if (rbo->rdev->ring[radeon_copy_ring_index(rbo->rdev)].ready == false) radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU); else if (rbo->rdev->mc.visible_vram_size < rbo->rdev->mc.real_vram_size && bo->mem.start < (rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT)) { unsigned fpfn = rbo->rdev->mc.visible_vram_size >> PAGE_SHIFT; int i; /* Try evicting to the CPU inaccessible part of VRAM * first, but only set GTT as busy placement, so this * BO will be evicted to GTT rather than causing other * BOs to be evicted from VRAM */ radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM | RADEON_GEM_DOMAIN_GTT); rbo->placement.num_busy_placement = 0; for (i = 0; i < rbo->placement.num_placement; i++) { if (rbo->placements[i].mem_type == TTM_PL_VRAM) { if (rbo->placements[i].fpfn < fpfn) rbo->placements[i].fpfn = fpfn; } else { rbo->placement.busy_placement = &rbo->placements[i]; rbo->placement.num_busy_placement = 1; } } } else radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_GTT); break; case TTM_PL_TT: default: radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU); } *placement = rbo->placement; } static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp) { struct radeon_bo *rbo = container_of(bo, struct radeon_bo, tbo); struct radeon_device *rdev = radeon_get_rdev(bo->bdev); if (radeon_ttm_tt_has_userptr(rdev, bo->ttm)) return -EPERM; return drm_vma_node_verify_access(&rbo->tbo.base.vma_node, filp->private_data); } static int radeon_move_blit(struct ttm_buffer_object *bo, bool evict, struct ttm_resource *new_mem, struct ttm_resource *old_mem) { struct radeon_device *rdev; uint64_t old_start, new_start; struct radeon_fence *fence; unsigned num_pages; int r, ridx; rdev = radeon_get_rdev(bo->bdev); ridx = radeon_copy_ring_index(rdev); old_start = (u64)old_mem->start << PAGE_SHIFT; new_start = (u64)new_mem->start << PAGE_SHIFT; switch (old_mem->mem_type) { case TTM_PL_VRAM: old_start += rdev->mc.vram_start; break; case TTM_PL_TT: old_start += rdev->mc.gtt_start; break; default: DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); return -EINVAL; } switch (new_mem->mem_type) { case TTM_PL_VRAM: new_start += rdev->mc.vram_start; break; case TTM_PL_TT: new_start += rdev->mc.gtt_start; break; default: DRM_ERROR("Unknown placement %d\n", old_mem->mem_type); return -EINVAL; } if (!rdev->ring[ridx].ready) { DRM_ERROR("Trying to move memory with ring turned off.\n"); return -EINVAL; } BUILD_BUG_ON((PAGE_SIZE % RADEON_GPU_PAGE_SIZE) != 0); num_pages = new_mem->num_pages * (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); fence = radeon_copy(rdev, old_start, new_start, num_pages, bo->base.resv); if (IS_ERR(fence)) return PTR_ERR(fence); r = ttm_bo_move_accel_cleanup(bo, &fence->base, evict, false, new_mem); radeon_fence_unref(&fence); return r; } static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict, struct ttm_operation_ctx *ctx, struct ttm_resource *new_mem, struct ttm_place *hop) { struct radeon_device *rdev; struct radeon_bo *rbo; struct ttm_resource *old_mem = &bo->mem; int r; if (new_mem->mem_type == TTM_PL_TT) { r = radeon_ttm_tt_bind(bo->bdev, bo->ttm, new_mem); if (r) return r; } r = ttm_bo_wait_ctx(bo, ctx); if (r) return r; /* Can't move a pinned BO */ rbo = container_of(bo, struct radeon_bo, tbo); if (WARN_ON_ONCE(rbo->tbo.pin_count > 0)) return -EINVAL; rdev = radeon_get_rdev(bo->bdev); if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { ttm_bo_move_null(bo, new_mem); goto out; } if (old_mem->mem_type == TTM_PL_SYSTEM && new_mem->mem_type == TTM_PL_TT) { ttm_bo_move_null(bo, new_mem); goto out; } if (old_mem->mem_type == TTM_PL_TT && new_mem->mem_type == TTM_PL_SYSTEM) { radeon_ttm_tt_unbind(bo->bdev, bo->ttm); ttm_resource_free(bo, &bo->mem); ttm_bo_assign_mem(bo, new_mem); goto out; } if (rdev->ring[radeon_copy_ring_index(rdev)].ready && rdev->asic->copy.copy != NULL) { if ((old_mem->mem_type == TTM_PL_SYSTEM && new_mem->mem_type == TTM_PL_VRAM) || (old_mem->mem_type == TTM_PL_VRAM && new_mem->mem_type == TTM_PL_SYSTEM)) { hop->fpfn = 0; hop->lpfn = 0; hop->mem_type = TTM_PL_TT; hop->flags = 0; return -EMULTIHOP; } r = radeon_move_blit(bo, evict, new_mem, old_mem); } else { r = -ENODEV; } if (r) { r = ttm_bo_move_memcpy(bo, ctx, new_mem); if (r) return r; } out: /* update statistics */ atomic64_add(bo->base.size, &rdev->num_bytes_moved); radeon_bo_move_notify(bo, evict, new_mem); return 0; } static int radeon_ttm_io_mem_reserve(struct ttm_device *bdev, struct ttm_resource *mem) { struct radeon_device *rdev = radeon_get_rdev(bdev); size_t bus_size = (size_t)mem->num_pages << PAGE_SHIFT; switch (mem->mem_type) { case TTM_PL_SYSTEM: /* system memory */ return 0; case TTM_PL_TT: #if IS_ENABLED(CONFIG_AGP) if (rdev->flags & RADEON_IS_AGP) { /* RADEON_IS_AGP is set only if AGP is active */ mem->bus.offset = (mem->start << PAGE_SHIFT) + rdev->mc.agp_base; mem->bus.is_iomem = !rdev->ddev->agp->cant_use_aperture; mem->bus.caching = ttm_write_combined; } #endif break; case TTM_PL_VRAM: mem->bus.offset = mem->start << PAGE_SHIFT; /* check if it's visible */ if ((mem->bus.offset + bus_size) > rdev->mc.visible_vram_size) return -EINVAL; mem->bus.offset += rdev->mc.aper_base; mem->bus.is_iomem = true; mem->bus.caching = ttm_write_combined; #ifdef __alpha__ /* * Alpha: use bus.addr to hold the ioremap() return, * so we can modify bus.base below. */ mem->bus.addr = ioremap_wc(mem->bus.offset, bus_size); if (!mem->bus.addr) return -ENOMEM; /* * Alpha: Use just the bus offset plus * the hose/domain memory base for bus.base. * It then can be used to build PTEs for VRAM * access, as done in ttm_bo_vm_fault(). */ mem->bus.offset = (mem->bus.offset & 0x0ffffffffUL) + rdev->hose->dense_mem_base; #endif break; default: return -EINVAL; } return 0; } /* * TTM backend functions. */ struct radeon_ttm_tt { struct ttm_tt ttm; u64 offset; uint64_t userptr; struct mm_struct *usermm; uint32_t userflags; bool bound; }; /* prepare the sg table with the user pages */ static int radeon_ttm_tt_pin_userptr(struct ttm_device *bdev, struct ttm_tt *ttm) { struct radeon_device *rdev = radeon_get_rdev(bdev); struct radeon_ttm_tt *gtt = (void *)ttm; unsigned pinned = 0; int r; int write = !(gtt->userflags & RADEON_GEM_USERPTR_READONLY); enum dma_data_direction direction = write ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE; if (current->mm != gtt->usermm) return -EPERM; if (gtt->userflags & RADEON_GEM_USERPTR_ANONONLY) { /* check that we only pin down anonymous memory to prevent problems with writeback */ unsigned long end = gtt->userptr + ttm->num_pages * PAGE_SIZE; struct vm_area_struct *vma; vma = find_vma(gtt->usermm, gtt->userptr); if (!vma || vma->vm_file || vma->vm_end < end) return -EPERM; } do { unsigned num_pages = ttm->num_pages - pinned; uint64_t userptr = gtt->userptr + pinned * PAGE_SIZE; struct page **pages = ttm->pages + pinned; r = get_user_pages(userptr, num_pages, write ? FOLL_WRITE : 0, pages, NULL); if (r < 0) goto release_pages; pinned += r; } while (pinned < ttm->num_pages); r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0, ttm->num_pages << PAGE_SHIFT, GFP_KERNEL); if (r) goto release_sg; r = dma_map_sgtable(rdev->dev, ttm->sg, direction, 0); if (r) goto release_sg; drm_prime_sg_to_dma_addr_array(ttm->sg, gtt->ttm.dma_address, ttm->num_pages); return 0; release_sg: kfree(ttm->sg); release_pages: release_pages(ttm->pages, pinned); return r; } static void radeon_ttm_tt_unpin_userptr(struct ttm_device *bdev, struct ttm_tt *ttm) { struct radeon_device *rdev = radeon_get_rdev(bdev); struct radeon_ttm_tt *gtt = (void *)ttm; struct sg_page_iter sg_iter; int write = !(gtt->userflags & RADEON_GEM_USERPTR_READONLY); enum dma_data_direction direction = write ? DMA_BIDIRECTIONAL : DMA_TO_DEVICE; /* double check that we don't free the table twice */ if (!ttm->sg->sgl) return; /* free the sg table and pages again */ dma_unmap_sgtable(rdev->dev, ttm->sg, direction, 0); for_each_sgtable_page(ttm->sg, &sg_iter, 0) { struct page *page = sg_page_iter_page(&sg_iter); if (!(gtt->userflags & RADEON_GEM_USERPTR_READONLY)) set_page_dirty(page); mark_page_accessed(page); put_page(page); } sg_free_table(ttm->sg); } static bool radeon_ttm_backend_is_bound(struct ttm_tt *ttm) { struct radeon_ttm_tt *gtt = (void*)ttm; return (gtt->bound); } static int radeon_ttm_backend_bind(struct ttm_device *bdev, struct ttm_tt *ttm, struct ttm_resource *bo_mem) { struct radeon_ttm_tt *gtt = (void*)ttm; struct radeon_device *rdev = radeon_get_rdev(bdev); uint32_t flags = RADEON_GART_PAGE_VALID | RADEON_GART_PAGE_READ | RADEON_GART_PAGE_WRITE; int r; if (gtt->bound) return 0; if (gtt->userptr) { radeon_ttm_tt_pin_userptr(bdev, ttm); flags &= ~RADEON_GART_PAGE_WRITE; } gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT); if (!ttm->num_pages) { WARN(1, "nothing to bind %u pages for mreg %p back %p!\n", ttm->num_pages, bo_mem, ttm); } if (ttm->caching == ttm_cached) flags |= RADEON_GART_PAGE_SNOOP; r = radeon_gart_bind(rdev, gtt->offset, ttm->num_pages, ttm->pages, gtt->ttm.dma_address, flags); if (r) { DRM_ERROR("failed to bind %u pages at 0x%08X\n", ttm->num_pages, (unsigned)gtt->offset); return r; } gtt->bound = true; return 0; } static void radeon_ttm_backend_unbind(struct ttm_device *bdev, struct ttm_tt *ttm) { struct radeon_ttm_tt *gtt = (void *)ttm; struct radeon_device *rdev = radeon_get_rdev(bdev); if (!gtt->bound) return; radeon_gart_unbind(rdev, gtt->offset, ttm->num_pages); if (gtt->userptr) radeon_ttm_tt_unpin_userptr(bdev, ttm); gtt->bound = false; } static void radeon_ttm_backend_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) { struct radeon_ttm_tt *gtt = (void *)ttm; radeon_ttm_backend_unbind(bdev, ttm); ttm_tt_destroy_common(bdev, ttm); ttm_tt_fini(>t->ttm); kfree(gtt); } static struct ttm_tt *radeon_ttm_tt_create(struct ttm_buffer_object *bo, uint32_t page_flags) { struct radeon_ttm_tt *gtt; enum ttm_caching caching; struct radeon_bo *rbo; #if IS_ENABLED(CONFIG_AGP) struct radeon_device *rdev = radeon_get_rdev(bo->bdev); if (rdev->flags & RADEON_IS_AGP) { return ttm_agp_tt_create(bo, rdev->ddev->agp->bridge, page_flags); } #endif rbo = container_of(bo, struct radeon_bo, tbo); gtt = kzalloc(sizeof(struct radeon_ttm_tt), GFP_KERNEL); if (gtt == NULL) { return NULL; } if (rbo->flags & RADEON_GEM_GTT_UC) caching = ttm_uncached; else if (rbo->flags & RADEON_GEM_GTT_WC) caching = ttm_write_combined; else caching = ttm_cached; if (ttm_sg_tt_init(>t->ttm, bo, page_flags, caching)) { kfree(gtt); return NULL; } return >t->ttm; } static struct radeon_ttm_tt *radeon_ttm_tt_to_gtt(struct radeon_device *rdev, struct ttm_tt *ttm) { #if IS_ENABLED(CONFIG_AGP) if (rdev->flags & RADEON_IS_AGP) return NULL; #endif if (!ttm) return NULL; return container_of(ttm, struct radeon_ttm_tt, ttm); } static int radeon_ttm_tt_populate(struct ttm_device *bdev, struct ttm_tt *ttm, struct ttm_operation_ctx *ctx) { struct radeon_device *rdev = radeon_get_rdev(bdev); struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm); bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); if (gtt && gtt->userptr) { ttm->sg = kzalloc(sizeof(struct sg_table), GFP_KERNEL); if (!ttm->sg) return -ENOMEM; ttm->page_flags |= TTM_PAGE_FLAG_SG; return 0; } if (slave && ttm->sg) { drm_prime_sg_to_dma_addr_array(ttm->sg, gtt->ttm.dma_address, ttm->num_pages); return 0; } return ttm_pool_alloc(&rdev->mman.bdev.pool, ttm, ctx); } static void radeon_ttm_tt_unpopulate(struct ttm_device *bdev, struct ttm_tt *ttm) { struct radeon_device *rdev = radeon_get_rdev(bdev); struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm); bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); if (gtt && gtt->userptr) { kfree(ttm->sg); ttm->page_flags &= ~TTM_PAGE_FLAG_SG; return; } if (slave) return; return ttm_pool_free(&rdev->mman.bdev.pool, ttm); } int radeon_ttm_tt_set_userptr(struct radeon_device *rdev, struct ttm_tt *ttm, uint64_t addr, uint32_t flags) { struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm); if (gtt == NULL) return -EINVAL; gtt->userptr = addr; gtt->usermm = current->mm; gtt->userflags = flags; return 0; } bool radeon_ttm_tt_is_bound(struct ttm_device *bdev, struct ttm_tt *ttm) { #if IS_ENABLED(CONFIG_AGP) struct radeon_device *rdev = radeon_get_rdev(bdev); if (rdev->flags & RADEON_IS_AGP) return ttm_agp_is_bound(ttm); #endif return radeon_ttm_backend_is_bound(ttm); } static int radeon_ttm_tt_bind(struct ttm_device *bdev, struct ttm_tt *ttm, struct ttm_resource *bo_mem) { #if IS_ENABLED(CONFIG_AGP) struct radeon_device *rdev = radeon_get_rdev(bdev); #endif if (!bo_mem) return -EINVAL; #if IS_ENABLED(CONFIG_AGP) if (rdev->flags & RADEON_IS_AGP) return ttm_agp_bind(ttm, bo_mem); #endif return radeon_ttm_backend_bind(bdev, ttm, bo_mem); } static void radeon_ttm_tt_unbind(struct ttm_device *bdev, struct ttm_tt *ttm) { #if IS_ENABLED(CONFIG_AGP) struct radeon_device *rdev = radeon_get_rdev(bdev); if (rdev->flags & RADEON_IS_AGP) { ttm_agp_unbind(ttm); return; } #endif radeon_ttm_backend_unbind(bdev, ttm); } static void radeon_ttm_tt_destroy(struct ttm_device *bdev, struct ttm_tt *ttm) { #if IS_ENABLED(CONFIG_AGP) struct radeon_device *rdev = radeon_get_rdev(bdev); if (rdev->flags & RADEON_IS_AGP) { ttm_agp_unbind(ttm); ttm_tt_destroy_common(bdev, ttm); ttm_agp_destroy(ttm); return; } #endif radeon_ttm_backend_destroy(bdev, ttm); } bool radeon_ttm_tt_has_userptr(struct radeon_device *rdev, struct ttm_tt *ttm) { struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm); if (gtt == NULL) return false; return !!gtt->userptr; } bool radeon_ttm_tt_is_readonly(struct radeon_device *rdev, struct ttm_tt *ttm) { struct radeon_ttm_tt *gtt = radeon_ttm_tt_to_gtt(rdev, ttm); if (gtt == NULL) return false; return !!(gtt->userflags & RADEON_GEM_USERPTR_READONLY); } static void radeon_bo_delete_mem_notify(struct ttm_buffer_object *bo) { radeon_bo_move_notify(bo, false, NULL); } static struct ttm_device_funcs radeon_bo_driver = { .ttm_tt_create = &radeon_ttm_tt_create, .ttm_tt_populate = &radeon_ttm_tt_populate, .ttm_tt_unpopulate = &radeon_ttm_tt_unpopulate, .ttm_tt_destroy = &radeon_ttm_tt_destroy, .eviction_valuable = ttm_bo_eviction_valuable, .evict_flags = &radeon_evict_flags, .move = &radeon_bo_move, .verify_access = &radeon_verify_access, .delete_mem_notify = &radeon_bo_delete_mem_notify, .io_mem_reserve = &radeon_ttm_io_mem_reserve, }; int radeon_ttm_init(struct radeon_device *rdev) { int r; /* No others user of address space so set it to 0 */ r = ttm_device_init(&rdev->mman.bdev, &radeon_bo_driver, rdev->dev, rdev->ddev->anon_inode->i_mapping, rdev->ddev->vma_offset_manager, rdev->need_swiotlb, dma_addressing_limited(&rdev->pdev->dev)); if (r) { DRM_ERROR("failed initializing buffer object driver(%d).\n", r); return r; } rdev->mman.initialized = true; r = radeon_ttm_init_vram(rdev); if (r) { DRM_ERROR("Failed initializing VRAM heap.\n"); return r; } /* Change the size here instead of the init above so only lpfn is affected */ radeon_ttm_set_active_vram_size(rdev, rdev->mc.visible_vram_size); r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true, RADEON_GEM_DOMAIN_VRAM, 0, NULL, NULL, &rdev->stolen_vga_memory); if (r) { return r; } r = radeon_bo_reserve(rdev->stolen_vga_memory, false); if (r) return r; r = radeon_bo_pin(rdev->stolen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL); radeon_bo_unreserve(rdev->stolen_vga_memory); if (r) { radeon_bo_unref(&rdev->stolen_vga_memory); return r; } DRM_INFO("radeon: %uM of VRAM memory ready\n", (unsigned) (rdev->mc.real_vram_size / (1024 * 1024))); r = radeon_ttm_init_gtt(rdev); if (r) { DRM_ERROR("Failed initializing GTT heap.\n"); return r; } DRM_INFO("radeon: %uM of GTT memory ready.\n", (unsigned)(rdev->mc.gtt_size / (1024 * 1024))); r = radeon_ttm_debugfs_init(rdev); if (r) { DRM_ERROR("Failed to init debugfs\n"); return r; } return 0; } void radeon_ttm_fini(struct radeon_device *rdev) { int r; if (!rdev->mman.initialized) return; radeon_ttm_debugfs_fini(rdev); if (rdev->stolen_vga_memory) { r = radeon_bo_reserve(rdev->stolen_vga_memory, false); if (r == 0) { radeon_bo_unpin(rdev->stolen_vga_memory); radeon_bo_unreserve(rdev->stolen_vga_memory); } radeon_bo_unref(&rdev->stolen_vga_memory); } ttm_range_man_fini(&rdev->mman.bdev, TTM_PL_VRAM); ttm_range_man_fini(&rdev->mman.bdev, TTM_PL_TT); ttm_device_fini(&rdev->mman.bdev); radeon_gart_fini(rdev); rdev->mman.initialized = false; DRM_INFO("radeon: ttm finalized\n"); } /* this should only be called at bootup or when userspace * isn't running */ void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size) { struct ttm_resource_manager *man; if (!rdev->mman.initialized) return; man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_VRAM); /* this just adjusts TTM size idea, which sets lpfn to the correct value */ man->size = size >> PAGE_SHIFT; } static vm_fault_t radeon_ttm_fault(struct vm_fault *vmf) { struct ttm_buffer_object *bo = vmf->vma->vm_private_data; struct radeon_device *rdev = radeon_get_rdev(bo->bdev); vm_fault_t ret; down_read(&rdev->pm.mclk_lock); ret = ttm_bo_vm_reserve(bo, vmf); if (ret) goto unlock_mclk; ret = radeon_bo_fault_reserve_notify(bo); if (ret) goto unlock_resv; ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot, TTM_BO_VM_NUM_PREFAULT, 1); if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) goto unlock_mclk; unlock_resv: dma_resv_unlock(bo->base.resv); unlock_mclk: up_read(&rdev->pm.mclk_lock); return ret; } static const struct vm_operations_struct radeon_ttm_vm_ops = { .fault = radeon_ttm_fault, .open = ttm_bo_vm_open, .close = ttm_bo_vm_close, .access = ttm_bo_vm_access }; int radeon_mmap(struct file *filp, struct vm_area_struct *vma) { int r; struct drm_file *file_priv = filp->private_data; struct radeon_device *rdev = file_priv->minor->dev->dev_private; if (rdev == NULL) return -EINVAL; r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev); if (unlikely(r != 0)) return r; vma->vm_ops = &radeon_ttm_vm_ops; return 0; } #if defined(CONFIG_DEBUG_FS) static int radeon_mm_dump_table(struct seq_file *m, void *data) { struct drm_info_node *node = (struct drm_info_node *)m->private; unsigned ttm_pl = *(int*)node->info_ent->data; struct drm_device *dev = node->minor->dev; struct radeon_device *rdev = dev->dev_private; struct ttm_resource_manager *man = ttm_manager_type(&rdev->mman.bdev, ttm_pl); struct drm_printer p = drm_seq_file_printer(m); man->func->debug(man, &p); return 0; } static int radeon_ttm_pool_debugfs(struct seq_file *m, void *data) { struct drm_info_node *node = (struct drm_info_node *)m->private; struct drm_device *dev = node->minor->dev; struct radeon_device *rdev = dev->dev_private; return ttm_pool_debugfs(&rdev->mman.bdev.pool, m); } static int ttm_pl_vram = TTM_PL_VRAM; static int ttm_pl_tt = TTM_PL_TT; static struct drm_info_list radeon_ttm_debugfs_list[] = { {"radeon_vram_mm", radeon_mm_dump_table, 0, &ttm_pl_vram}, {"radeon_gtt_mm", radeon_mm_dump_table, 0, &ttm_pl_tt}, {"ttm_page_pool", radeon_ttm_pool_debugfs, 0, NULL} }; static int radeon_ttm_vram_open(struct inode *inode, struct file *filep) { struct radeon_device *rdev = inode->i_private; i_size_write(inode, rdev->mc.mc_vram_size); filep->private_data = inode->i_private; return 0; } static ssize_t radeon_ttm_vram_read(struct file *f, char __user *buf, size_t size, loff_t *pos) { struct radeon_device *rdev = f->private_data; ssize_t result = 0; int r; if (size & 0x3 || *pos & 0x3) return -EINVAL; while (size) { unsigned long flags; uint32_t value; if (*pos >= rdev->mc.mc_vram_size) return result; spin_lock_irqsave(&rdev->mmio_idx_lock, flags); WREG32(RADEON_MM_INDEX, ((uint32_t)*pos) | 0x80000000); if (rdev->family >= CHIP_CEDAR) WREG32(EVERGREEN_MM_INDEX_HI, *pos >> 31); value = RREG32(RADEON_MM_DATA); spin_unlock_irqrestore(&rdev->mmio_idx_lock, flags); r = put_user(value, (uint32_t *)buf); if (r) return r; result += 4; buf += 4; *pos += 4; size -= 4; } return result; } static const struct file_operations radeon_ttm_vram_fops = { .owner = THIS_MODULE, .open = radeon_ttm_vram_open, .read = radeon_ttm_vram_read, .llseek = default_llseek }; static int radeon_ttm_gtt_open(struct inode *inode, struct file *filep) { struct radeon_device *rdev = inode->i_private; i_size_write(inode, rdev->mc.gtt_size); filep->private_data = inode->i_private; return 0; } static ssize_t radeon_ttm_gtt_read(struct file *f, char __user *buf, size_t size, loff_t *pos) { struct radeon_device *rdev = f->private_data; ssize_t result = 0; int r; while (size) { loff_t p = *pos / PAGE_SIZE; unsigned off = *pos & ~PAGE_MASK; size_t cur_size = min_t(size_t, size, PAGE_SIZE - off); struct page *page; void *ptr; if (p >= rdev->gart.num_cpu_pages) return result; page = rdev->gart.pages[p]; if (page) { ptr = kmap(page); ptr += off; r = copy_to_user(buf, ptr, cur_size); kunmap(rdev->gart.pages[p]); } else r = clear_user(buf, cur_size); if (r) return -EFAULT; result += cur_size; buf += cur_size; *pos += cur_size; size -= cur_size; } return result; } static const struct file_operations radeon_ttm_gtt_fops = { .owner = THIS_MODULE, .open = radeon_ttm_gtt_open, .read = radeon_ttm_gtt_read, .llseek = default_llseek }; #endif static int radeon_ttm_debugfs_init(struct radeon_device *rdev) { #if defined(CONFIG_DEBUG_FS) unsigned count; struct drm_minor *minor = rdev->ddev->primary; struct dentry *root = minor->debugfs_root; rdev->mman.vram = debugfs_create_file("radeon_vram", S_IFREG | S_IRUGO, root, rdev, &radeon_ttm_vram_fops); rdev->mman.gtt = debugfs_create_file("radeon_gtt", S_IFREG | S_IRUGO, root, rdev, &radeon_ttm_gtt_fops); count = ARRAY_SIZE(radeon_ttm_debugfs_list); return radeon_debugfs_add_files(rdev, radeon_ttm_debugfs_list, count); #else return 0; #endif } static void radeon_ttm_debugfs_fini(struct radeon_device *rdev) { #if defined(CONFIG_DEBUG_FS) debugfs_remove(rdev->mman.vram); rdev->mman.vram = NULL; debugfs_remove(rdev->mman.gtt); rdev->mman.gtt = NULL; #endif }