diff options
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_bo.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 190 |
1 files changed, 69 insertions, 121 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 98819462f025..8d91b0428af1 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -51,6 +51,7 @@ static void ttm_bo_global_kobj_release(struct kobject *kobj); DEFINE_MUTEX(ttm_global_mutex); unsigned ttm_bo_glob_use_count; struct ttm_bo_global ttm_bo_glob; +EXPORT_SYMBOL(ttm_bo_glob); static struct attribute ttm_bo_count = { .name = "bo_count", @@ -148,23 +149,21 @@ static void ttm_bo_release_list(struct kref *list_kref) { struct ttm_buffer_object *bo = container_of(list_kref, struct ttm_buffer_object, list_kref); - struct ttm_bo_device *bdev = bo->bdev; size_t acc_size = bo->acc_size; BUG_ON(kref_read(&bo->list_kref)); BUG_ON(kref_read(&bo->kref)); - BUG_ON(atomic_read(&bo->cpu_writers)); BUG_ON(bo->mem.mm_node != NULL); BUG_ON(!list_empty(&bo->lru)); BUG_ON(!list_empty(&bo->ddestroy)); ttm_tt_destroy(bo->ttm); - atomic_dec(&bo->bdev->glob->bo_count); + atomic_dec(&ttm_bo_glob.bo_count); dma_fence_put(bo->moving); if (!ttm_bo_uses_embedded_gem_object(bo)) dma_resv_fini(&bo->base._resv); mutex_destroy(&bo->wu_mutex); bo->destroy(bo); - ttm_mem_global_free(bdev->glob->mem_glob, acc_size); + ttm_mem_global_free(&ttm_mem_glob, acc_size); } static void ttm_bo_add_mem_to_lru(struct ttm_buffer_object *bo, @@ -188,23 +187,17 @@ static void ttm_bo_add_mem_to_lru(struct ttm_buffer_object *bo, if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED) && bo->ttm && !(bo->ttm->page_flags & (TTM_PAGE_FLAG_SG | TTM_PAGE_FLAG_SWAPPED))) { - list_add_tail(&bo->swap, &bdev->glob->swap_lru[bo->priority]); + list_add_tail(&bo->swap, &ttm_bo_glob.swap_lru[bo->priority]); kref_get(&bo->list_kref); } } -void ttm_bo_add_to_lru(struct ttm_buffer_object *bo) -{ - ttm_bo_add_mem_to_lru(bo, &bo->mem); -} -EXPORT_SYMBOL(ttm_bo_add_to_lru); - static void ttm_bo_ref_bug(struct kref *list_kref) { BUG(); } -void ttm_bo_del_from_lru(struct ttm_buffer_object *bo) +static void ttm_bo_del_from_lru(struct ttm_buffer_object *bo) { struct ttm_bo_device *bdev = bo->bdev; bool notify = false; @@ -224,16 +217,6 @@ void ttm_bo_del_from_lru(struct ttm_buffer_object *bo) bdev->driver->del_from_lru_notify(bo); } -void ttm_bo_del_sub_from_lru(struct ttm_buffer_object *bo) -{ - struct ttm_bo_global *glob = bo->bdev->glob; - - spin_lock(&glob->lru_lock); - ttm_bo_del_from_lru(bo); - spin_unlock(&glob->lru_lock); -} -EXPORT_SYMBOL(ttm_bo_del_sub_from_lru); - static void ttm_bo_bulk_move_set_pos(struct ttm_lru_bulk_move_pos *pos, struct ttm_buffer_object *bo) { @@ -248,7 +231,7 @@ void ttm_bo_move_to_lru_tail(struct ttm_buffer_object *bo, dma_resv_assert_held(bo->base.resv); ttm_bo_del_from_lru(bo); - ttm_bo_add_to_lru(bo); + ttm_bo_add_mem_to_lru(bo, &bo->mem); if (bulk && !(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { switch (bo->mem.mem_type) { @@ -311,7 +294,7 @@ void ttm_bo_bulk_move_lru_tail(struct ttm_lru_bulk_move *bulk) dma_resv_assert_held(pos->first->base.resv); dma_resv_assert_held(pos->last->base.resv); - lru = &pos->first->bdev->glob->swap_lru[i]; + lru = &ttm_bo_glob.swap_lru[i]; list_bulk_move_tail(lru, &pos->first->swap, &pos->last->swap); } } @@ -475,7 +458,6 @@ static void ttm_bo_flush_all_fences(struct ttm_buffer_object *bo) static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) { struct ttm_bo_device *bdev = bo->bdev; - struct ttm_bo_global *glob = bdev->glob; int ret; ret = ttm_bo_individualize_resv(bo); @@ -485,16 +467,16 @@ static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) */ dma_resv_wait_timeout_rcu(bo->base.resv, true, false, 30 * HZ); - spin_lock(&glob->lru_lock); + spin_lock(&ttm_bo_glob.lru_lock); goto error; } - spin_lock(&glob->lru_lock); + spin_lock(&ttm_bo_glob.lru_lock); ret = dma_resv_trylock(bo->base.resv) ? 0 : -EBUSY; if (!ret) { if (dma_resv_test_signaled_rcu(&bo->base._resv, true)) { ttm_bo_del_from_lru(bo); - spin_unlock(&glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); if (bo->base.resv != &bo->base._resv) dma_resv_unlock(&bo->base._resv); @@ -512,7 +494,7 @@ static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) */ if (bo->mem.placement & TTM_PL_FLAG_NO_EVICT) { bo->mem.placement &= ~TTM_PL_FLAG_NO_EVICT; - ttm_bo_add_to_lru(bo); + ttm_bo_move_to_lru_tail(bo, NULL); } dma_resv_unlock(bo->base.resv); @@ -523,7 +505,7 @@ static void ttm_bo_cleanup_refs_or_queue(struct ttm_buffer_object *bo) error: kref_get(&bo->list_kref); list_add_tail(&bo->ddestroy, &bdev->ddestroy); - spin_unlock(&glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); schedule_delayed_work(&bdev->wq, ((HZ / 100) < 1) ? 1 : HZ / 100); @@ -546,7 +528,6 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool interruptible, bool no_wait_gpu, bool unlock_resv) { - struct ttm_bo_global *glob = bo->bdev->glob; struct dma_resv *resv; int ret; @@ -565,7 +546,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, if (unlock_resv) dma_resv_unlock(bo->base.resv); - spin_unlock(&glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); lret = dma_resv_wait_timeout_rcu(resv, true, interruptible, @@ -576,7 +557,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, else if (lret == 0) return -EBUSY; - spin_lock(&glob->lru_lock); + spin_lock(&ttm_bo_glob.lru_lock); if (unlock_resv && !dma_resv_trylock(bo->base.resv)) { /* * We raced, and lost, someone else holds the reservation now, @@ -586,7 +567,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, * delayed destruction would succeed, so just return success * here. */ - spin_unlock(&glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); return 0; } ret = 0; @@ -595,7 +576,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, if (ret || unlikely(list_empty(&bo->ddestroy))) { if (unlock_resv) dma_resv_unlock(bo->base.resv); - spin_unlock(&glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); return ret; } @@ -603,7 +584,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, list_del_init(&bo->ddestroy); kref_put(&bo->list_kref, ttm_bo_ref_bug); - spin_unlock(&glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); ttm_bo_cleanup_memtype_use(bo); if (unlock_resv) @@ -618,7 +599,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, */ static bool ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) { - struct ttm_bo_global *glob = bdev->glob; + struct ttm_bo_global *glob = &ttm_bo_glob; struct list_head removed; bool empty; @@ -676,7 +657,7 @@ static void ttm_bo_release(struct kref *kref) if (bo->bdev->driver->release_notify) bo->bdev->driver->release_notify(bo); - drm_vma_offset_remove(&bdev->vma_manager, &bo->base.vma_node); + drm_vma_offset_remove(bdev->vma_manager, &bo->base.vma_node); ttm_mem_io_lock(man, false); ttm_mem_io_free_vm(bo); ttm_mem_io_unlock(man); @@ -842,13 +823,12 @@ static int ttm_mem_evict_first(struct ttm_bo_device *bdev, struct ww_acquire_ctx *ticket) { struct ttm_buffer_object *bo = NULL, *busy_bo = NULL; - struct ttm_bo_global *glob = bdev->glob; struct ttm_mem_type_manager *man = &bdev->man[mem_type]; bool locked = false; unsigned i; int ret; - spin_lock(&glob->lru_lock); + spin_lock(&ttm_bo_glob.lru_lock); for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { list_for_each_entry(bo, &man->lru[i], lru) { bool busy; @@ -880,7 +860,7 @@ static int ttm_mem_evict_first(struct ttm_bo_device *bdev, if (!bo) { if (busy_bo) kref_get(&busy_bo->list_kref); - spin_unlock(&glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); ret = ttm_mem_evict_wait_busy(busy_bo, ctx, ticket); if (busy_bo) kref_put(&busy_bo->list_kref, ttm_bo_release_list); @@ -896,17 +876,11 @@ static int ttm_mem_evict_first(struct ttm_bo_device *bdev, return ret; } - ttm_bo_del_from_lru(bo); - spin_unlock(&glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); ret = ttm_bo_evict(bo, ctx); - if (locked) { + if (locked) ttm_bo_unreserve(bo); - } else { - spin_lock(&glob->lru_lock); - ttm_bo_add_to_lru(bo); - spin_unlock(&glob->lru_lock); - } kref_put(&bo->list_kref, ttm_bo_release_list); return ret; @@ -926,7 +900,8 @@ EXPORT_SYMBOL(ttm_bo_mem_put); */ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo, struct ttm_mem_type_manager *man, - struct ttm_mem_reg *mem) + struct ttm_mem_reg *mem, + bool no_wait_gpu) { struct dma_fence *fence; int ret; @@ -935,19 +910,22 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo, fence = dma_fence_get(man->move); spin_unlock(&man->move_lock); - if (fence) { - dma_resv_add_shared_fence(bo->base.resv, fence); + if (!fence) + return 0; - ret = dma_resv_reserve_shared(bo->base.resv, 1); - if (unlikely(ret)) { - dma_fence_put(fence); - return ret; - } + if (no_wait_gpu) + return -EBUSY; - dma_fence_put(bo->moving); - bo->moving = fence; + dma_resv_add_shared_fence(bo->base.resv, fence); + + ret = dma_resv_reserve_shared(bo->base.resv, 1); + if (unlikely(ret)) { + dma_fence_put(fence); + return ret; } + dma_fence_put(bo->moving); + bo->moving = fence; return 0; } @@ -978,7 +956,7 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, return ret; } while (1); - return ttm_bo_add_move_fence(bo, man, mem); + return ttm_bo_add_move_fence(bo, man, mem, ctx->no_wait_gpu); } static uint32_t ttm_bo_select_caching(struct ttm_mem_type_manager *man, @@ -1068,12 +1046,10 @@ static int ttm_bo_mem_placement(struct ttm_buffer_object *bo, mem->mem_type = mem_type; mem->placement = cur_flags; - if (bo->mem.mem_type < mem_type && !list_empty(&bo->lru)) { - spin_lock(&bo->bdev->glob->lru_lock); - ttm_bo_del_from_lru(bo); - ttm_bo_add_mem_to_lru(bo, mem); - spin_unlock(&bo->bdev->glob->lru_lock); - } + spin_lock(&ttm_bo_glob.lru_lock); + ttm_bo_del_from_lru(bo); + ttm_bo_add_mem_to_lru(bo, mem); + spin_unlock(&ttm_bo_glob.lru_lock); return 0; } @@ -1120,14 +1096,18 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, if (unlikely(ret)) goto error; - if (mem->mm_node) { - ret = ttm_bo_add_move_fence(bo, man, mem); - if (unlikely(ret)) { - (*man->func->put_node)(man, mem); - goto error; - } - return 0; + if (!mem->mm_node) + continue; + + ret = ttm_bo_add_move_fence(bo, man, mem, ctx->no_wait_gpu); + if (unlikely(ret)) { + (*man->func->put_node)(man, mem); + if (ret == -EBUSY) + continue; + + goto error; } + return 0; } for (i = 0; i < placement->num_busy_placement; ++i) { @@ -1160,9 +1140,9 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, error: if (bo->mem.mem_type == TTM_PL_SYSTEM && !list_empty(&bo->lru)) { - spin_lock(&bo->bdev->glob->lru_lock); + spin_lock(&ttm_bo_glob.lru_lock); ttm_bo_move_to_lru_tail(bo, NULL); - spin_unlock(&bo->bdev->glob->lru_lock); + spin_unlock(&ttm_bo_glob.lru_lock); } return ret; @@ -1286,9 +1266,9 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev, struct dma_resv *resv, void (*destroy) (struct ttm_buffer_object *)) { + struct ttm_mem_global *mem_glob = &ttm_mem_glob; int ret = 0; unsigned long num_pages; - struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; bool locked; ret = ttm_mem_global_alloc(mem_glob, acc_size, ctx); @@ -1315,7 +1295,6 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev, kref_init(&bo->kref); kref_init(&bo->list_kref); - atomic_set(&bo->cpu_writers, 0); INIT_LIST_HEAD(&bo->lru); INIT_LIST_HEAD(&bo->ddestroy); INIT_LIST_HEAD(&bo->swap); @@ -1349,7 +1328,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev, dma_resv_init(&bo->base._resv); drm_vma_node_reset(&bo->base.vma_node); } - atomic_inc(&bo->bdev->glob->bo_count); + atomic_inc(&ttm_bo_glob.bo_count); /* * For ttm_bo_type_device buffers, allocate @@ -1357,7 +1336,7 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev, */ if (bo->type == ttm_bo_type_device || bo->type == ttm_bo_type_sg) - ret = drm_vma_offset_add(&bdev->vma_manager, &bo->base.vma_node, + ret = drm_vma_offset_add(bdev->vma_manager, &bo->base.vma_node, bo->mem.num_pages); /* passed reservation objects should already be locked, @@ -1379,11 +1358,9 @@ int ttm_bo_init_reserved(struct ttm_bo_device *bdev, return ret; } - if (resv && !(bo->mem.placement & TTM_PL_FLAG_NO_EVICT)) { - spin_lock(&bdev->glob->lru_lock); - ttm_bo_add_to_lru(bo); - spin_unlock(&bdev->glob->lru_lock); - } + spin_lock(&ttm_bo_glob.lru_lock); + ttm_bo_move_to_lru_tail(bo, NULL); + spin_unlock(&ttm_bo_glob.lru_lock); return ret; } @@ -1481,7 +1458,7 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, .flags = TTM_OPT_FLAG_FORCE_ALLOC }; struct ttm_mem_type_manager *man = &bdev->man[mem_type]; - struct ttm_bo_global *glob = bdev->glob; + struct ttm_bo_global *glob = &ttm_bo_glob; struct dma_fence *fence; int ret; unsigned i; @@ -1650,8 +1627,6 @@ static int ttm_bo_global_init(void) goto out; spin_lock_init(&glob->lru_lock); - glob->mem_glob = &ttm_mem_glob; - glob->mem_glob->bo_glob = glob; glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); if (unlikely(glob->dummy_read_page == NULL)) { @@ -1675,10 +1650,10 @@ out: int ttm_bo_device_release(struct ttm_bo_device *bdev) { + struct ttm_bo_global *glob = &ttm_bo_glob; int ret = 0; unsigned i = TTM_NUM_MEM_TYPES; struct ttm_mem_type_manager *man; - struct ttm_bo_global *glob = bdev->glob; while (i--) { man = &bdev->man[i]; @@ -1708,8 +1683,6 @@ int ttm_bo_device_release(struct ttm_bo_device *bdev) pr_debug("Swap list %d was clean\n", i); spin_unlock(&glob->lru_lock); - drm_vma_offset_manager_destroy(&bdev->vma_manager); - if (!ret) ttm_bo_global_release(); @@ -1720,11 +1693,15 @@ EXPORT_SYMBOL(ttm_bo_device_release); int ttm_bo_device_init(struct ttm_bo_device *bdev, struct ttm_bo_driver *driver, struct address_space *mapping, + struct drm_vma_offset_manager *vma_manager, bool need_dma32) { struct ttm_bo_global *glob = &ttm_bo_glob; int ret; + if (WARN_ON(vma_manager == NULL)) + return -EINVAL; + ret = ttm_bo_global_init(); if (ret) return ret; @@ -1741,13 +1718,10 @@ int ttm_bo_device_init(struct ttm_bo_device *bdev, if (unlikely(ret != 0)) goto out_no_sys; - drm_vma_offset_manager_init(&bdev->vma_manager, - DRM_FILE_PAGE_OFFSET_START, - DRM_FILE_PAGE_OFFSET_SIZE); + bdev->vma_manager = vma_manager; INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); INIT_LIST_HEAD(&bdev->ddestroy); bdev->dev_mapping = mapping; - bdev->glob = glob; bdev->need_dma32 = need_dma32; mutex_lock(&ttm_global_mutex); list_add_tail(&bdev->device_list, &glob->device_list); @@ -1827,31 +1801,6 @@ int ttm_bo_wait(struct ttm_buffer_object *bo, } EXPORT_SYMBOL(ttm_bo_wait); -int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) -{ - int ret = 0; - - /* - * Using ttm_bo_reserve makes sure the lru lists are updated. - */ - - ret = ttm_bo_reserve(bo, true, no_wait, NULL); - if (unlikely(ret != 0)) - return ret; - ret = ttm_bo_wait(bo, true, no_wait); - if (likely(ret == 0)) - atomic_inc(&bo->cpu_writers); - ttm_bo_unreserve(bo); - return ret; -} -EXPORT_SYMBOL(ttm_bo_synccpu_write_grab); - -void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) -{ - atomic_dec(&bo->cpu_writers); -} -EXPORT_SYMBOL(ttm_bo_synccpu_write_release); - /** * A buffer object shrink method that tries to swap out the first * buffer object on the bo_global::swap_lru list. @@ -1951,8 +1900,7 @@ void ttm_bo_swapout_all(struct ttm_bo_device *bdev) .no_wait_gpu = false }; - while (ttm_bo_swapout(bdev->glob, &ctx) == 0) - ; + while (ttm_bo_swapout(&ttm_bo_glob, &ctx) == 0); } EXPORT_SYMBOL(ttm_bo_swapout_all); |