diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ttm.c | 899 |
1 files changed, 899 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c new file mode 100644 index 0000000..baf00dd --- /dev/null +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -0,0 +1,899 @@ +/* + * 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 <glisse@freedesktop.org> + * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> + * Dave Airlie + */ +#include <ttm/ttm_bo_api.h> +#include <ttm/ttm_bo_driver.h> +#include <ttm/ttm_placement.h> +#include <ttm/ttm_module.h> +#include <ttm/ttm_page_alloc.h> +#include <drm/drmP.h> +#include <drm/radeon_drm.h> +#include <linux/seq_file.h> +#include <linux/slab.h> +#include <linux/swiotlb.h> +#include "radeon_reg.h" +#include "radeon.h" + +#define DRM_FILE_PAGE_OFFSET (0x100000000ULL >> PAGE_SHIFT) + +static int radeon_ttm_debugfs_init(struct radeon_device *rdev); + +static struct radeon_device *radeon_get_rdev(struct ttm_bo_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; +} + + +/* + * Global memory. + */ +static int radeon_ttm_mem_global_init(struct drm_global_reference *ref) +{ + return ttm_mem_global_init(ref->object); +} + +static void radeon_ttm_mem_global_release(struct drm_global_reference *ref) +{ + ttm_mem_global_release(ref->object); +} + +static int radeon_ttm_global_init(struct radeon_device *rdev) +{ + struct drm_global_reference *global_ref; + int r; + + rdev->mman.mem_global_referenced = false; + global_ref = &rdev->mman.mem_global_ref; + global_ref->global_type = DRM_GLOBAL_TTM_MEM; + global_ref->size = sizeof(struct ttm_mem_global); + global_ref->init = &radeon_ttm_mem_global_init; + global_ref->release = &radeon_ttm_mem_global_release; + r = drm_global_item_ref(global_ref); + if (r != 0) { + DRM_ERROR("Failed setting up TTM memory accounting " + "subsystem.\n"); + return r; + } + + rdev->mman.bo_global_ref.mem_glob = + rdev->mman.mem_global_ref.object; + global_ref = &rdev->mman.bo_global_ref.ref; + global_ref->global_type = DRM_GLOBAL_TTM_BO; + global_ref->size = sizeof(struct ttm_bo_global); + global_ref->init = &ttm_bo_global_init; + global_ref->release = &ttm_bo_global_release; + r = drm_global_item_ref(global_ref); + if (r != 0) { + DRM_ERROR("Failed setting up TTM BO subsystem.\n"); + drm_global_item_unref(&rdev->mman.mem_global_ref); + return r; + } + + rdev->mman.mem_global_referenced = true; + return 0; +} + +static void radeon_ttm_global_fini(struct radeon_device *rdev) +{ + if (rdev->mman.mem_global_referenced) { + drm_global_item_unref(&rdev->mman.bo_global_ref.ref); + drm_global_item_unref(&rdev->mman.mem_global_ref); + rdev->mman.mem_global_referenced = false; + } +} + +static int radeon_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags) +{ + return 0; +} + +static int radeon_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, + struct ttm_mem_type_manager *man) +{ + struct radeon_device *rdev; + + rdev = radeon_get_rdev(bdev); + + switch (type) { + case TTM_PL_SYSTEM: + /* System memory */ + man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_MASK_CACHING; + man->default_caching = TTM_PL_FLAG_CACHED; + break; + case TTM_PL_TT: + man->func = &ttm_bo_manager_func; + man->gpu_offset = rdev->mc.gtt_start; + man->available_caching = TTM_PL_MASK_CACHING; + man->default_caching = TTM_PL_FLAG_CACHED; + man->flags = TTM_MEMTYPE_FLAG_MAPPABLE | TTM_MEMTYPE_FLAG_CMA; +#if __OS_HAS_AGP + if (rdev->flags & RADEON_IS_AGP) { + if (!(drm_core_has_AGP(rdev->ddev) && rdev->ddev->agp)) { + DRM_ERROR("AGP is not enabled for memory type %u\n", + (unsigned)type); + return -EINVAL; + } + if (!rdev->ddev->agp->cant_use_aperture) + man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_FLAG_UNCACHED | + TTM_PL_FLAG_WC; + man->default_caching = TTM_PL_FLAG_WC; + } +#endif + break; + case TTM_PL_VRAM: + /* "On-card" video ram */ + man->func = &ttm_bo_manager_func; + man->gpu_offset = rdev->mc.vram_start; + man->flags = TTM_MEMTYPE_FLAG_FIXED | + TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC; + man->default_caching = TTM_PL_FLAG_WC; + break; + default: + DRM_ERROR("Unsupported memory type %u\n", (unsigned)type); + return -EINVAL; + } + return 0; +} + +static void radeon_evict_flags(struct ttm_buffer_object *bo, + struct ttm_placement *placement) +{ + struct radeon_bo *rbo; + static u32 placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM; + + if (!radeon_ttm_bo_is_radeon_bo(bo)) { + placement->fpfn = 0; + placement->lpfn = 0; + 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_RING_TYPE_GFX_INDEX].ready == false) + radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_CPU); + 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) +{ + return 0; +} + +static void radeon_move_null(struct ttm_buffer_object *bo, + struct ttm_mem_reg *new_mem) +{ + struct ttm_mem_reg *old_mem = &bo->mem; + + BUG_ON(old_mem->mm_node != NULL); + *old_mem = *new_mem; + new_mem->mm_node = NULL; +} + +static int radeon_move_blit(struct ttm_buffer_object *bo, + bool evict, bool no_wait_gpu, + struct ttm_mem_reg *new_mem, + struct ttm_mem_reg *old_mem) +{ + struct radeon_device *rdev; + uint64_t old_start, new_start; + struct radeon_fence *fence; + int r, ridx; + + rdev = radeon_get_rdev(bo->bdev); + ridx = radeon_copy_ring_index(rdev); + old_start = old_mem->start << PAGE_SHIFT; + new_start = 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); + + /* sync other rings */ + fence = bo->sync_obj; + r = radeon_copy(rdev, old_start, new_start, + new_mem->num_pages * (PAGE_SIZE / RADEON_GPU_PAGE_SIZE), /* GPU pages */ + &fence); + /* FIXME: handle copy error */ + r = ttm_bo_move_accel_cleanup(bo, (void *)fence, + evict, no_wait_gpu, new_mem); + radeon_fence_unref(&fence); + return r; +} + +static int radeon_move_vram_ram(struct ttm_buffer_object *bo, + bool evict, bool interruptible, + bool no_wait_gpu, + struct ttm_mem_reg *new_mem) +{ + struct radeon_device *rdev; + struct ttm_mem_reg *old_mem = &bo->mem; + struct ttm_mem_reg tmp_mem; + u32 placements; + struct ttm_placement placement; + int r; + + rdev = radeon_get_rdev(bo->bdev); + tmp_mem = *new_mem; + tmp_mem.mm_node = NULL; + placement.fpfn = 0; + placement.lpfn = 0; + placement.num_placement = 1; + placement.placement = &placements; + placement.num_busy_placement = 1; + placement.busy_placement = &placements; + placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT; + r = ttm_bo_mem_space(bo, &placement, &tmp_mem, + interruptible, no_wait_gpu); + if (unlikely(r)) { + return r; + } + + r = ttm_tt_set_placement_caching(bo->ttm, tmp_mem.placement); + if (unlikely(r)) { + goto out_cleanup; + } + + r = ttm_tt_bind(bo->ttm, &tmp_mem); + if (unlikely(r)) { + goto out_cleanup; + } + r = radeon_move_blit(bo, true, no_wait_gpu, &tmp_mem, old_mem); + if (unlikely(r)) { + goto out_cleanup; + } + r = ttm_bo_move_ttm(bo, true, no_wait_gpu, new_mem); +out_cleanup: + ttm_bo_mem_put(bo, &tmp_mem); + return r; +} + +static int radeon_move_ram_vram(struct ttm_buffer_object *bo, + bool evict, bool interruptible, + bool no_wait_gpu, + struct ttm_mem_reg *new_mem) +{ + struct radeon_device *rdev; + struct ttm_mem_reg *old_mem = &bo->mem; + struct ttm_mem_reg tmp_mem; + struct ttm_placement placement; + u32 placements; + int r; + + rdev = radeon_get_rdev(bo->bdev); + tmp_mem = *new_mem; + tmp_mem.mm_node = NULL; + placement.fpfn = 0; + placement.lpfn = 0; + placement.num_placement = 1; + placement.placement = &placements; + placement.num_busy_placement = 1; + placement.busy_placement = &placements; + placements = TTM_PL_MASK_CACHING | TTM_PL_FLAG_TT; + r = ttm_bo_mem_space(bo, &placement, &tmp_mem, + interruptible, no_wait_gpu); + if (unlikely(r)) { + return r; + } + r = ttm_bo_move_ttm(bo, true, no_wait_gpu, &tmp_mem); + if (unlikely(r)) { + goto out_cleanup; + } + r = radeon_move_blit(bo, true, no_wait_gpu, new_mem, old_mem); + if (unlikely(r)) { + goto out_cleanup; + } +out_cleanup: + ttm_bo_mem_put(bo, &tmp_mem); + return r; +} + +static int radeon_bo_move(struct ttm_buffer_object *bo, + bool evict, bool interruptible, + bool no_wait_gpu, + struct ttm_mem_reg *new_mem) +{ + struct radeon_device *rdev; + struct ttm_mem_reg *old_mem = &bo->mem; + int r; + + rdev = radeon_get_rdev(bo->bdev); + if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { + radeon_move_null(bo, new_mem); + return 0; + } + if ((old_mem->mem_type == TTM_PL_TT && + new_mem->mem_type == TTM_PL_SYSTEM) || + (old_mem->mem_type == TTM_PL_SYSTEM && + new_mem->mem_type == TTM_PL_TT)) { + /* bind is enough */ + radeon_move_null(bo, new_mem); + return 0; + } + if (!rdev->ring[radeon_copy_ring_index(rdev)].ready || + rdev->asic->copy.copy == NULL) { + /* use memcpy */ + goto memcpy; + } + + if (old_mem->mem_type == TTM_PL_VRAM && + new_mem->mem_type == TTM_PL_SYSTEM) { + r = radeon_move_vram_ram(bo, evict, interruptible, + no_wait_gpu, new_mem); + } else if (old_mem->mem_type == TTM_PL_SYSTEM && + new_mem->mem_type == TTM_PL_VRAM) { + r = radeon_move_ram_vram(bo, evict, interruptible, + no_wait_gpu, new_mem); + } else { + r = radeon_move_blit(bo, evict, no_wait_gpu, new_mem, old_mem); + } + + if (r) { +memcpy: + r = ttm_bo_move_memcpy(bo, evict, no_wait_gpu, new_mem); + } + return r; +} + +static int radeon_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) +{ + struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; + struct radeon_device *rdev = radeon_get_rdev(bdev); + + mem->bus.addr = NULL; + mem->bus.offset = 0; + mem->bus.size = mem->num_pages << PAGE_SHIFT; + mem->bus.base = 0; + mem->bus.is_iomem = false; + if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) + return -EINVAL; + switch (mem->mem_type) { + case TTM_PL_SYSTEM: + /* system memory */ + return 0; + case TTM_PL_TT: +#if __OS_HAS_AGP + if (rdev->flags & RADEON_IS_AGP) { + /* RADEON_IS_AGP is set only if AGP is active */ + mem->bus.offset = mem->start << PAGE_SHIFT; + mem->bus.base = rdev->mc.agp_base; + mem->bus.is_iomem = !rdev->ddev->agp->cant_use_aperture; + } +#endif + break; + case TTM_PL_VRAM: + mem->bus.offset = mem->start << PAGE_SHIFT; + /* check if it's visible */ + if ((mem->bus.offset + mem->bus.size) > rdev->mc.visible_vram_size) + return -EINVAL; + mem->bus.base = rdev->mc.aper_base; + mem->bus.is_iomem = true; +#ifdef __alpha__ + /* + * Alpha: use bus.addr to hold the ioremap() return, + * so we can modify bus.base below. + */ + if (mem->placement & TTM_PL_FLAG_WC) + mem->bus.addr = + ioremap_wc(mem->bus.base + mem->bus.offset, + mem->bus.size); + else + mem->bus.addr = + ioremap_nocache(mem->bus.base + mem->bus.offset, + mem->bus.size); + + /* + * 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.base = (mem->bus.base & 0x0ffffffffUL) + + rdev->ddev->hose->dense_mem_base; +#endif + break; + default: + return -EINVAL; + } + return 0; +} + +static void radeon_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) +{ +} + +static int radeon_sync_obj_wait(void *sync_obj, bool lazy, bool interruptible) +{ + return radeon_fence_wait((struct radeon_fence *)sync_obj, interruptible); +} + +static int radeon_sync_obj_flush(void *sync_obj) +{ + return 0; +} + +static void radeon_sync_obj_unref(void **sync_obj) +{ + radeon_fence_unref((struct radeon_fence **)sync_obj); +} + +static void *radeon_sync_obj_ref(void *sync_obj) +{ + return radeon_fence_ref((struct radeon_fence *)sync_obj); +} + +static bool radeon_sync_obj_signaled(void *sync_obj) +{ + return radeon_fence_signaled((struct radeon_fence *)sync_obj); +} + +/* + * TTM backend functions. + */ +struct radeon_ttm_tt { + struct ttm_dma_tt ttm; + struct radeon_device *rdev; + u64 offset; +}; + +static int radeon_ttm_backend_bind(struct ttm_tt *ttm, + struct ttm_mem_reg *bo_mem) +{ + struct radeon_ttm_tt *gtt = (void*)ttm; + int r; + + gtt->offset = (unsigned long)(bo_mem->start << PAGE_SHIFT); + if (!ttm->num_pages) { + WARN(1, "nothing to bind %lu pages for mreg %p back %p!\n", + ttm->num_pages, bo_mem, ttm); + } + r = radeon_gart_bind(gtt->rdev, gtt->offset, + ttm->num_pages, ttm->pages, gtt->ttm.dma_address); + if (r) { + DRM_ERROR("failed to bind %lu pages at 0x%08X\n", + ttm->num_pages, (unsigned)gtt->offset); + return r; + } + return 0; +} + +static int radeon_ttm_backend_unbind(struct ttm_tt *ttm) +{ + struct radeon_ttm_tt *gtt = (void *)ttm; + + radeon_gart_unbind(gtt->rdev, gtt->offset, ttm->num_pages); + return 0; +} + +static void radeon_ttm_backend_destroy(struct ttm_tt *ttm) +{ + struct radeon_ttm_tt *gtt = (void *)ttm; + + ttm_dma_tt_fini(>t->ttm); + kfree(gtt); +} + +static struct ttm_backend_func radeon_backend_func = { + .bind = &radeon_ttm_backend_bind, + .unbind = &radeon_ttm_backend_unbind, + .destroy = &radeon_ttm_backend_destroy, +}; + +static struct ttm_tt *radeon_ttm_tt_create(struct ttm_bo_device *bdev, + unsigned long size, uint32_t page_flags, + struct page *dummy_read_page) +{ + struct radeon_device *rdev; + struct radeon_ttm_tt *gtt; + + rdev = radeon_get_rdev(bdev); +#if __OS_HAS_AGP + if (rdev->flags & RADEON_IS_AGP) { + return ttm_agp_tt_create(bdev, rdev->ddev->agp->bridge, + size, page_flags, dummy_read_page); + } +#endif + + gtt = kzalloc(sizeof(struct radeon_ttm_tt), GFP_KERNEL); + if (gtt == NULL) { + return NULL; + } + gtt->ttm.ttm.func = &radeon_backend_func; + gtt->rdev = rdev; + if (ttm_dma_tt_init(>t->ttm, bdev, size, page_flags, dummy_read_page)) { + kfree(gtt); + return NULL; + } + return >t->ttm.ttm; +} + +static int radeon_ttm_tt_populate(struct ttm_tt *ttm) +{ + struct radeon_device *rdev; + struct radeon_ttm_tt *gtt = (void *)ttm; + unsigned i; + int r; + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); + + if (ttm->state != tt_unpopulated) + return 0; + + if (slave && ttm->sg) { + drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages, + gtt->ttm.dma_address, ttm->num_pages); + ttm->state = tt_unbound; + return 0; + } + + rdev = radeon_get_rdev(ttm->bdev); +#if __OS_HAS_AGP + if (rdev->flags & RADEON_IS_AGP) { + return ttm_agp_tt_populate(ttm); + } +#endif + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)) +#ifdef CONFIG_SWIOTLB + if (swiotlb_nr_tbl()) { + return ttm_dma_populate(>t->ttm, rdev->dev); + } +#endif +#endif + + r = ttm_pool_populate(ttm); + if (r) { + return r; + } + + for (i = 0; i < ttm->num_pages; i++) { + gtt->ttm.dma_address[i] = pci_map_page(rdev->pdev, ttm->pages[i], + 0, PAGE_SIZE, + PCI_DMA_BIDIRECTIONAL); + if (pci_dma_mapping_error(rdev->pdev, gtt->ttm.dma_address[i])) { + while (--i) { + pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i], + PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + gtt->ttm.dma_address[i] = 0; + } + ttm_pool_unpopulate(ttm); + return -EFAULT; + } + } + return 0; +} + +static void radeon_ttm_tt_unpopulate(struct ttm_tt *ttm) +{ + struct radeon_device *rdev; + struct radeon_ttm_tt *gtt = (void *)ttm; + unsigned i; + bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); + + if (slave) + return; + + rdev = radeon_get_rdev(ttm->bdev); +#if __OS_HAS_AGP + if (rdev->flags & RADEON_IS_AGP) { + ttm_agp_tt_unpopulate(ttm); + return; + } +#endif + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)) +#ifdef CONFIG_SWIOTLB + if (swiotlb_nr_tbl()) { + ttm_dma_unpopulate(>t->ttm, rdev->dev); + return; + } +#endif +#endif + + for (i = 0; i < ttm->num_pages; i++) { + if (gtt->ttm.dma_address[i]) { + pci_unmap_page(rdev->pdev, gtt->ttm.dma_address[i], + PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); + } + } + + ttm_pool_unpopulate(ttm); +} + +static struct ttm_bo_driver radeon_bo_driver = { + .ttm_tt_create = &radeon_ttm_tt_create, + .ttm_tt_populate = &radeon_ttm_tt_populate, + .ttm_tt_unpopulate = &radeon_ttm_tt_unpopulate, + .invalidate_caches = &radeon_invalidate_caches, + .init_mem_type = &radeon_init_mem_type, + .evict_flags = &radeon_evict_flags, + .move = &radeon_bo_move, + .verify_access = &radeon_verify_access, + .sync_obj_signaled = &radeon_sync_obj_signaled, + .sync_obj_wait = &radeon_sync_obj_wait, + .sync_obj_flush = &radeon_sync_obj_flush, + .sync_obj_unref = &radeon_sync_obj_unref, + .sync_obj_ref = &radeon_sync_obj_ref, + .move_notify = &radeon_bo_move_notify, + .fault_reserve_notify = &radeon_bo_fault_reserve_notify, + .io_mem_reserve = &radeon_ttm_io_mem_reserve, + .io_mem_free = &radeon_ttm_io_mem_free, +}; + +int radeon_ttm_init(struct radeon_device *rdev) +{ + int r; + + r = radeon_ttm_global_init(rdev); + if (r) { + return r; + } + /* No others user of address space so set it to 0 */ + r = ttm_bo_device_init(&rdev->mman.bdev, + rdev->mman.bo_global_ref.ref.object, + &radeon_bo_driver, DRM_FILE_PAGE_OFFSET, + rdev->need_dma32); + if (r) { + DRM_ERROR("failed initializing buffer object driver(%d).\n", r); + return r; + } + rdev->mman.initialized = true; + r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_VRAM, + rdev->mc.real_vram_size >> PAGE_SHIFT); + if (r) { + DRM_ERROR("Failed initializing VRAM heap.\n"); + return r; + } + r = radeon_bo_create(rdev, 256 * 1024, PAGE_SIZE, true, + RADEON_GEM_DOMAIN_VRAM, + NULL, &rdev->stollen_vga_memory); + if (r) { + return r; + } + r = radeon_bo_reserve(rdev->stollen_vga_memory, false); + if (r) + return r; + r = radeon_bo_pin(rdev->stollen_vga_memory, RADEON_GEM_DOMAIN_VRAM, NULL); + radeon_bo_unreserve(rdev->stollen_vga_memory); + if (r) { + radeon_bo_unref(&rdev->stollen_vga_memory); + return r; + } + DRM_INFO("radeon: %uM of VRAM memory ready\n", + (unsigned) (rdev->mc.real_vram_size / (1024 * 1024))); + r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_TT, + rdev->mc.gtt_size >> PAGE_SHIFT); + 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))); + rdev->mman.bdev.dev_mapping = rdev->ddev->dev_mapping; + + 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; + if (rdev->stollen_vga_memory) { + r = radeon_bo_reserve(rdev->stollen_vga_memory, false); + if (r == 0) { + radeon_bo_unpin(rdev->stollen_vga_memory); + radeon_bo_unreserve(rdev->stollen_vga_memory); + } + radeon_bo_unref(&rdev->stollen_vga_memory); + } + ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_VRAM); + ttm_bo_clean_mm(&rdev->mman.bdev, TTM_PL_TT); + ttm_bo_device_release(&rdev->mman.bdev); + radeon_gart_fini(rdev); + radeon_ttm_global_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_mem_type_manager *man; + + if (!rdev->mman.initialized) + return; + + man = &rdev->mman.bdev.man[TTM_PL_VRAM]; + /* this just adjusts TTM size idea, which sets lpfn to the correct value */ + man->size = size >> PAGE_SHIFT; +} + +static struct vm_operations_struct radeon_ttm_vm_ops; +static const struct vm_operations_struct *ttm_vm_ops = NULL; + +static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) +{ + struct ttm_buffer_object *bo; + struct radeon_device *rdev; + int r; + + bo = (struct ttm_buffer_object *)vma->vm_private_data; + if (bo == NULL) { + return VM_FAULT_NOPAGE; + } + rdev = radeon_get_rdev(bo->bdev); + down_read(&rdev->pm.mclk_lock); + r = ttm_vm_ops->fault(vma, vmf); + up_read(&rdev->pm.mclk_lock); + return r; +} + +int radeon_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_file *file_priv; + struct radeon_device *rdev; + int r; + + if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) { + return drm_mmap(filp, vma); + } + + file_priv = filp->private_data; + 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; + } + if (unlikely(ttm_vm_ops == NULL)) { + ttm_vm_ops = vma->vm_ops; + radeon_ttm_vm_ops = *ttm_vm_ops; + radeon_ttm_vm_ops.fault = &radeon_ttm_fault; + } + vma->vm_ops = &radeon_ttm_vm_ops; + return 0; +} + + +#define RADEON_DEBUGFS_MEM_TYPES 2 + +#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; + struct drm_mm *mm = (struct drm_mm *)node->info_ent->data; + struct drm_device *dev = node->minor->dev; + struct radeon_device *rdev = dev->dev_private; + int ret; + struct ttm_bo_global *glob = rdev->mman.bdev.glob; + + spin_lock(&glob->lru_lock); + ret = drm_mm_dump_table(m, mm); + spin_unlock(&glob->lru_lock); + return ret; +} +#endif + +static int radeon_ttm_debugfs_init(struct radeon_device *rdev) +{ +#if defined(CONFIG_DEBUG_FS) + static struct drm_info_list radeon_mem_types_list[RADEON_DEBUGFS_MEM_TYPES+2]; + static char radeon_mem_types_names[RADEON_DEBUGFS_MEM_TYPES+2][32]; + unsigned i; + + for (i = 0; i < RADEON_DEBUGFS_MEM_TYPES; i++) { + if (i == 0) + sprintf(radeon_mem_types_names[i], "radeon_vram_mm"); + else + sprintf(radeon_mem_types_names[i], "radeon_gtt_mm"); + radeon_mem_types_list[i].name = radeon_mem_types_names[i]; + radeon_mem_types_list[i].show = &radeon_mm_dump_table; + radeon_mem_types_list[i].driver_features = 0; + if (i == 0) + radeon_mem_types_list[i].data = rdev->mman.bdev.man[TTM_PL_VRAM].priv; + else + radeon_mem_types_list[i].data = rdev->mman.bdev.man[TTM_PL_TT].priv; + + } + /* Add ttm page pool to debugfs */ + sprintf(radeon_mem_types_names[i], "ttm_page_pool"); + radeon_mem_types_list[i].name = radeon_mem_types_names[i]; + radeon_mem_types_list[i].show = &ttm_page_alloc_debugfs; + radeon_mem_types_list[i].driver_features = 0; + radeon_mem_types_list[i++].data = NULL; +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0)) +#ifdef CONFIG_SWIOTLB + if (swiotlb_nr_tbl()) { + sprintf(radeon_mem_types_names[i], "ttm_dma_page_pool"); + radeon_mem_types_list[i].name = radeon_mem_types_names[i]; + radeon_mem_types_list[i].show = &ttm_dma_page_alloc_debugfs; + radeon_mem_types_list[i].driver_features = 0; + radeon_mem_types_list[i++].data = NULL; + } +#endif +#endif + return radeon_debugfs_add_files(rdev, radeon_mem_types_list, i); + +#endif + return 0; +} |