diff options
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ttm.c | 33 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo.c | 292 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_util.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_tt.c | 12 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 1 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_bo_driver.h | 94 |
7 files changed, 296 insertions, 141 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h index 473e477..10e8af6 100644 --- a/drivers/gpu/drm/radeon/radeon_object.h +++ b/drivers/gpu/drm/radeon/radeon_object.h @@ -37,6 +37,7 @@ * TTM. */ struct radeon_mman { + struct ttm_bo_global_ref bo_global_ref; struct ttm_global_reference mem_global_ref; bool mem_global_referenced; struct ttm_bo_device bdev; diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index 1227a97..343b6d6 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -77,9 +77,25 @@ static int radeon_ttm_global_init(struct radeon_device *rdev) global_ref->release = &radeon_ttm_mem_global_release; r = ttm_global_item_ref(global_ref); if (r != 0) { - DRM_ERROR("Failed referencing a global TTM memory object.\n"); + 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 = TTM_GLOBAL_TTM_BO; + global_ref->size = sizeof(struct ttm_mem_global); + global_ref->init = &ttm_bo_global_init; + global_ref->release = &ttm_bo_global_release; + r = ttm_global_item_ref(global_ref); + if (r != 0) { + DRM_ERROR("Failed setting up TTM BO subsystem.\n"); + ttm_global_item_unref(&rdev->mman.mem_global_ref); + return r; + } + rdev->mman.mem_global_referenced = true; return 0; } @@ -87,6 +103,7 @@ static int radeon_ttm_global_init(struct radeon_device *rdev) static void radeon_ttm_global_fini(struct radeon_device *rdev) { if (rdev->mman.mem_global_referenced) { + ttm_global_item_unref(&rdev->mman.bo_global_ref.ref); ttm_global_item_unref(&rdev->mman.mem_global_ref); rdev->mman.mem_global_referenced = false; } @@ -286,9 +303,11 @@ static int radeon_move_vram_ram(struct ttm_buffer_object *bo, r = ttm_bo_move_ttm(bo, true, no_wait, new_mem); out_cleanup: if (tmp_mem.mm_node) { - spin_lock(&rdev->mman.bdev.lru_lock); + struct ttm_bo_global *glob = rdev->mman.bdev.glob; + + spin_lock(&glob->lru_lock); drm_mm_put_block(tmp_mem.mm_node); - spin_unlock(&rdev->mman.bdev.lru_lock); + spin_unlock(&glob->lru_lock); return r; } return r; @@ -323,9 +342,11 @@ static int radeon_move_ram_vram(struct ttm_buffer_object *bo, } out_cleanup: if (tmp_mem.mm_node) { - spin_lock(&rdev->mman.bdev.lru_lock); + struct ttm_bo_global *glob = rdev->mman.bdev.glob; + + spin_lock(&glob->lru_lock); drm_mm_put_block(tmp_mem.mm_node); - spin_unlock(&rdev->mman.bdev.lru_lock); + spin_unlock(&glob->lru_lock); return r; } return r; @@ -441,7 +462,7 @@ int radeon_ttm_init(struct radeon_device *rdev) } /* No others user of address space so set it to 0 */ r = ttm_bo_device_init(&rdev->mman.bdev, - rdev->mman.mem_global_ref.object, + rdev->mman.bo_global_ref.ref.object, &radeon_bo_driver, DRM_FILE_PAGE_OFFSET); if (r) { DRM_ERROR("failed initializing buffer object driver(%d).\n", r); diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index f16909c..0d0b1b7 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -45,6 +45,39 @@ static int ttm_bo_setup_vm(struct ttm_buffer_object *bo); static void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo); static int ttm_bo_swapout(struct ttm_mem_shrink *shrink); +static void ttm_bo_global_kobj_release(struct kobject *kobj); + +static struct attribute ttm_bo_count = { + .name = "bo_count", + .mode = S_IRUGO +}; + +static ssize_t ttm_bo_global_show(struct kobject *kobj, + struct attribute *attr, + char *buffer) +{ + struct ttm_bo_global *glob = + container_of(kobj, struct ttm_bo_global, kobj); + + return snprintf(buffer, PAGE_SIZE, "%lu\n", + (unsigned long) atomic_read(&glob->bo_count)); +} + +static struct attribute *ttm_bo_global_attrs[] = { + &ttm_bo_count, + NULL +}; + +static struct sysfs_ops ttm_bo_global_ops = { + .show = &ttm_bo_global_show +}; + +static struct kobj_type ttm_bo_glob_kobj_type = { + .release = &ttm_bo_global_kobj_release, + .sysfs_ops = &ttm_bo_global_ops, + .default_attrs = ttm_bo_global_attrs +}; + static inline uint32_t ttm_bo_type_flags(unsigned type) { @@ -67,10 +100,11 @@ static void ttm_bo_release_list(struct kref *list_kref) if (bo->ttm) ttm_tt_destroy(bo->ttm); + atomic_dec(&bo->glob->bo_count); if (bo->destroy) bo->destroy(bo); else { - ttm_mem_global_free(bdev->mem_glob, bo->acc_size); + ttm_mem_global_free(bdev->glob->mem_glob, bo->acc_size); kfree(bo); } } @@ -107,7 +141,7 @@ static void ttm_bo_add_to_lru(struct ttm_buffer_object *bo) kref_get(&bo->list_kref); if (bo->ttm != NULL) { - list_add_tail(&bo->swap, &bdev->swap_lru); + list_add_tail(&bo->swap, &bo->glob->swap_lru); kref_get(&bo->list_kref); } } @@ -142,7 +176,7 @@ int ttm_bo_reserve_locked(struct ttm_buffer_object *bo, bool interruptible, bool no_wait, bool use_sequence, uint32_t sequence) { - struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_global *glob = bo->glob; int ret; while (unlikely(atomic_cmpxchg(&bo->reserved, 0, 1) != 0)) { @@ -154,9 +188,9 @@ int ttm_bo_reserve_locked(struct ttm_buffer_object *bo, if (no_wait) return -EBUSY; - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); ret = ttm_bo_wait_unreserved(bo, interruptible); - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); if (unlikely(ret)) return ret; @@ -182,16 +216,16 @@ int ttm_bo_reserve(struct ttm_buffer_object *bo, bool interruptible, bool no_wait, bool use_sequence, uint32_t sequence) { - struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_global *glob = bo->glob; int put_count = 0; int ret; - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); ret = ttm_bo_reserve_locked(bo, interruptible, no_wait, use_sequence, sequence); if (likely(ret == 0)) put_count = ttm_bo_del_from_lru(bo); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); while (put_count--) kref_put(&bo->list_kref, ttm_bo_ref_bug); @@ -201,13 +235,13 @@ int ttm_bo_reserve(struct ttm_buffer_object *bo, void ttm_bo_unreserve(struct ttm_buffer_object *bo) { - struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_global *glob = bo->glob; - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); ttm_bo_add_to_lru(bo); atomic_set(&bo->reserved, 0); wake_up_all(&bo->event_queue); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); } EXPORT_SYMBOL(ttm_bo_unreserve); @@ -218,6 +252,7 @@ EXPORT_SYMBOL(ttm_bo_unreserve); static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) { struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_global *glob = bo->glob; int ret = 0; uint32_t page_flags = 0; @@ -230,14 +265,14 @@ static int ttm_bo_add_ttm(struct ttm_buffer_object *bo, bool zero_alloc) page_flags |= TTM_PAGE_FLAG_ZERO_ALLOC; case ttm_bo_type_kernel: bo->ttm = ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, - page_flags, bdev->dummy_read_page); + page_flags, glob->dummy_read_page); if (unlikely(bo->ttm == NULL)) ret = -ENOMEM; break; case ttm_bo_type_user: bo->ttm = ttm_tt_create(bdev, bo->num_pages << PAGE_SHIFT, page_flags | TTM_PAGE_FLAG_USER, - bdev->dummy_read_page); + glob->dummy_read_page); if (unlikely(bo->ttm == NULL)) ret = -ENOMEM; break; @@ -355,6 +390,7 @@ out_err: static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) { struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_global *glob = bo->glob; struct ttm_bo_driver *driver = bdev->driver; int ret; @@ -366,7 +402,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) spin_unlock(&bo->lock); - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); ret = ttm_bo_reserve_locked(bo, false, false, false, 0); BUG_ON(ret); if (bo->ttm) @@ -381,7 +417,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) bo->mem.mm_node = NULL; } put_count = ttm_bo_del_from_lru(bo); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); atomic_set(&bo->reserved, 0); @@ -391,14 +427,14 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) return 0; } - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); if (list_empty(&bo->ddestroy)) { void *sync_obj = bo->sync_obj; void *sync_obj_arg = bo->sync_obj_arg; kref_get(&bo->list_kref); list_add_tail(&bo->ddestroy, &bdev->ddestroy); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); spin_unlock(&bo->lock); if (sync_obj) @@ -408,7 +444,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) ret = 0; } else { - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); spin_unlock(&bo->lock); ret = -EBUSY; } @@ -423,11 +459,12 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) { + struct ttm_bo_global *glob = bdev->glob; struct ttm_buffer_object *entry, *nentry; struct list_head *list, *next; int ret; - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); list_for_each_safe(list, next, &bdev->ddestroy) { entry = list_entry(list, struct ttm_buffer_object, ddestroy); nentry = NULL; @@ -444,16 +481,16 @@ static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) } kref_get(&entry->list_kref); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); ret = ttm_bo_cleanup_refs(entry, remove_all); kref_put(&entry->list_kref, ttm_bo_release_list); - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); if (nentry) { bool next_onlist = !list_empty(next); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); kref_put(&nentry->list_kref, ttm_bo_release_list); - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); /* * Someone might have raced us and removed the * next entry from the list. We don't bother restarting @@ -467,7 +504,7 @@ static int ttm_bo_delayed_delete(struct ttm_bo_device *bdev, bool remove_all) break; } ret = !list_empty(&bdev->ddestroy); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); return ret; } @@ -517,6 +554,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, unsigned mem_type, { int ret = 0; struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_global *glob = bo->glob; struct ttm_mem_reg evict_mem; uint32_t proposed_placement; @@ -565,12 +603,12 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, unsigned mem_type, goto out; } - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); if (evict_mem.mm_node) { drm_mm_put_block(evict_mem.mm_node); evict_mem.mm_node = NULL; } - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); bo->evicted = true; out: return ret; @@ -585,6 +623,7 @@ static int ttm_bo_mem_force_space(struct ttm_bo_device *bdev, uint32_t mem_type, bool interruptible, bool no_wait) { + struct ttm_bo_global *glob = bdev->glob; struct drm_mm_node *node; struct ttm_buffer_object *entry; struct ttm_mem_type_manager *man = &bdev->man[mem_type]; @@ -598,7 +637,7 @@ retry_pre_get: if (unlikely(ret != 0)) return ret; - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); do { node = drm_mm_search_free(&man->manager, num_pages, mem->page_alignment, 1); @@ -619,7 +658,7 @@ retry_pre_get: if (likely(ret == 0)) put_count = ttm_bo_del_from_lru(entry); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); if (unlikely(ret != 0)) return ret; @@ -635,21 +674,21 @@ retry_pre_get: if (ret) return ret; - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); } while (1); if (!node) { - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); return -ENOMEM; } node = drm_mm_get_block_atomic(node, num_pages, mem->page_alignment); if (unlikely(!node)) { - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); goto retry_pre_get; } - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); mem->mm_node = node; mem->mem_type = mem_type; return 0; @@ -697,6 +736,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, bool interruptible, bool no_wait) { struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_global *glob = bo->glob; struct ttm_mem_type_manager *man; uint32_t num_prios = bdev->driver->num_mem_type_prio; @@ -733,20 +773,20 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo, if (unlikely(ret)) return ret; - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); node = drm_mm_search_free(&man->manager, mem->num_pages, mem->page_alignment, 1); if (unlikely(!node)) { - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); break; } node = drm_mm_get_block_atomic(node, mem->num_pages, mem-> page_alignment); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); } while (!node); } if (node) @@ -816,7 +856,7 @@ int ttm_bo_move_buffer(struct ttm_buffer_object *bo, uint32_t proposed_placement, bool interruptible, bool no_wait) { - struct ttm_bo_device *bdev = bo->bdev; + struct ttm_bo_global *glob = bo->glob; int ret = 0; struct ttm_mem_reg mem; @@ -852,9 +892,9 @@ int ttm_bo_move_buffer(struct ttm_buffer_object *bo, out_unlock: if (ret && mem.mm_node) { - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); drm_mm_put_block(mem.mm_node); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); } return ret; } @@ -990,6 +1030,7 @@ int ttm_buffer_object_init(struct ttm_bo_device *bdev, INIT_LIST_HEAD(&bo->ddestroy); INIT_LIST_HEAD(&bo->swap); bo->bdev = bdev; + bo->glob = bdev->glob; bo->type = type; bo->num_pages = num_pages; bo->mem.mem_type = TTM_PL_SYSTEM; @@ -1002,6 +1043,7 @@ int ttm_buffer_object_init(struct ttm_bo_device *bdev, bo->seq_valid = false; bo->persistant_swap_storage = persistant_swap_storage; bo->acc_size = acc_size; + atomic_inc(&bo->glob->bo_count); ret = ttm_bo_check_placement(bo, flags, 0ULL); if (unlikely(ret != 0)) @@ -1040,13 +1082,13 @@ out_err: } EXPORT_SYMBOL(ttm_buffer_object_init); -static inline size_t ttm_bo_size(struct ttm_bo_device *bdev, +static inline size_t ttm_bo_size(struct ttm_bo_global *glob, unsigned long num_pages) { size_t page_array_size = (num_pages * sizeof(void *) + PAGE_SIZE - 1) & PAGE_MASK; - return bdev->ttm_bo_size + 2 * page_array_size; + return glob->ttm_bo_size + 2 * page_array_size; } int ttm_buffer_object_create(struct ttm_bo_device *bdev, @@ -1061,10 +1103,10 @@ int ttm_buffer_object_create(struct ttm_bo_device *bdev, { struct ttm_buffer_object *bo; int ret; - struct ttm_mem_global *mem_glob = bdev->mem_glob; + struct ttm_mem_global *mem_glob = bdev->glob->mem_glob; size_t acc_size = - ttm_bo_size(bdev, (size + PAGE_SIZE - 1) >> PAGE_SHIFT); + ttm_bo_size(bdev->glob, (size + PAGE_SIZE - 1) >> PAGE_SHIFT); ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false); if (unlikely(ret != 0)) return ret; @@ -1118,6 +1160,7 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, struct list_head *head, unsigned mem_type, bool allow_errors) { + struct ttm_bo_global *glob = bdev->glob; struct ttm_buffer_object *entry; int ret; int put_count; @@ -1126,30 +1169,31 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, * Can't use standard list traversal since we're unlocking. */ - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); while (!list_empty(head)) { entry = list_first_entry(head, struct ttm_buffer_object, lru); kref_get(&entry->list_kref); ret = ttm_bo_reserve_locked(entry, false, false, false, 0); put_count = ttm_bo_del_from_lru(entry); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); while (put_count--) kref_put(&entry->list_kref, ttm_bo_ref_bug); BUG_ON(ret); ret = ttm_bo_leave_list(entry, mem_type, allow_errors); ttm_bo_unreserve(entry); kref_put(&entry->list_kref, ttm_bo_release_list); - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); } - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); return 0; } int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) { + struct ttm_bo_global *glob = bdev->glob; struct ttm_mem_type_manager *man = &bdev->man[mem_type]; int ret = -EINVAL; @@ -1171,13 +1215,13 @@ int ttm_bo_clean_mm(struct ttm_bo_device *bdev, unsigned mem_type) if (mem_type > 0) { ttm_bo_force_list_clean(bdev, &man->lru, mem_type, false); - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); if (drm_mm_clean(&man->manager)) drm_mm_takedown(&man->manager); else ret = -EBUSY; - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); } return ret; @@ -1251,11 +1295,83 @@ int ttm_bo_init_mm(struct ttm_bo_device *bdev, unsigned type, } EXPORT_SYMBOL(ttm_bo_init_mm); +static void ttm_bo_global_kobj_release(struct kobject *kobj) +{ + struct ttm_bo_global *glob = + container_of(kobj, struct ttm_bo_global, kobj); + + printk(KERN_INFO TTM_PFX "Freeing bo global.\n"); + ttm_mem_unregister_shrink(glob->mem_glob, &glob->shrink); + __free_page(glob->dummy_read_page); + kfree(glob); +} + +void ttm_bo_global_release(struct ttm_global_reference *ref) +{ + struct ttm_bo_global *glob = ref->object; + + kobject_del(&glob->kobj); + kobject_put(&glob->kobj); +} +EXPORT_SYMBOL(ttm_bo_global_release); + +int ttm_bo_global_init(struct ttm_global_reference *ref) +{ + struct ttm_bo_global_ref *bo_ref = + container_of(ref, struct ttm_bo_global_ref, ref); + struct ttm_bo_global *glob = ref->object; + int ret; + + mutex_init(&glob->device_list_mutex); + spin_lock_init(&glob->lru_lock); + glob->mem_glob = bo_ref->mem_glob; + glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); + + if (unlikely(glob->dummy_read_page == NULL)) { + ret = -ENOMEM; + goto out_no_drp; + } + + INIT_LIST_HEAD(&glob->swap_lru); + INIT_LIST_HEAD(&glob->device_list); + + ttm_mem_init_shrink(&glob->shrink, ttm_bo_swapout); + ret = ttm_mem_register_shrink(glob->mem_glob, &glob->shrink); + if (unlikely(ret != 0)) { + printk(KERN_ERR TTM_PFX + "Could not register buffer object swapout.\n"); + goto out_no_shrink; + } + + glob->ttm_bo_extra_size = + ttm_round_pot(sizeof(struct ttm_tt)) + + ttm_round_pot(sizeof(struct ttm_backend)); + + glob->ttm_bo_size = glob->ttm_bo_extra_size + + ttm_round_pot(sizeof(struct ttm_buffer_object)); + + atomic_set(&glob->bo_count, 0); + + kobject_init(&glob->kobj, &ttm_bo_glob_kobj_type); + ret = kobject_add(&glob->kobj, ttm_get_kobj(), "buffer_objects"); + if (unlikely(ret != 0)) + kobject_put(&glob->kobj); + return ret; +out_no_shrink: + __free_page(glob->dummy_read_page); +out_no_drp: + kfree(glob); + return ret; +} +EXPORT_SYMBOL(ttm_bo_global_init); + + int ttm_bo_device_release(struct ttm_bo_device *bdev) { 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]; @@ -1271,98 +1387,74 @@ int ttm_bo_device_release(struct ttm_bo_device *bdev) } } + mutex_lock(&glob->device_list_mutex); + list_del(&bdev->device_list); + mutex_unlock(&glob->device_list_mutex); + if (!cancel_delayed_work(&bdev->wq)) flush_scheduled_work(); while (ttm_bo_delayed_delete(bdev, true)) ; - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); if (list_empty(&bdev->ddestroy)) TTM_DEBUG("Delayed destroy list was clean\n"); if (list_empty(&bdev->man[0].lru)) TTM_DEBUG("Swap list was clean\n"); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); - ttm_mem_unregister_shrink(bdev->mem_glob, &bdev->shrink); BUG_ON(!drm_mm_clean(&bdev->addr_space_mm)); write_lock(&bdev->vm_lock); drm_mm_takedown(&bdev->addr_space_mm); write_unlock(&bdev->vm_lock); - __free_page(bdev->dummy_read_page); return ret; } EXPORT_SYMBOL(ttm_bo_device_release); -/* - * This function is intended to be called on drm driver load. - * If you decide to call it from firstopen, you must protect the call - * from a potentially racing ttm_bo_driver_finish in lastclose. - * (This may happen on X server restart). - */ - int ttm_bo_device_init(struct ttm_bo_device *bdev, - struct ttm_mem_global *mem_glob, - struct ttm_bo_driver *driver, uint64_t file_page_offset) + struct ttm_bo_global *glob, + struct ttm_bo_driver *driver, + uint64_t file_page_offset) { int ret = -EINVAL; - bdev->dummy_read_page = NULL; rwlock_init(&bdev->vm_lock); - spin_lock_init(&bdev->lru_lock); + spin_lock_init(&glob->lru_lock); bdev->driver = driver; - bdev->mem_glob = mem_glob; memset(bdev->man, 0, sizeof(bdev->man)); - bdev->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); - if (unlikely(bdev->dummy_read_page == NULL)) { - ret = -ENOMEM; - goto out_err0; - } - /* * Initialize the system memory buffer type. * Other types need to be driver / IOCTL initialized. */ ret = ttm_bo_init_mm(bdev, TTM_PL_SYSTEM, 0, 0); if (unlikely(ret != 0)) - goto out_err1; + goto out_no_sys; bdev->addr_space_rb = RB_ROOT; ret = drm_mm_init(&bdev->addr_space_mm, file_page_offset, 0x10000000); if (unlikely(ret != 0)) - goto out_err2; + goto out_no_addr_mm; INIT_DELAYED_WORK(&bdev->wq, ttm_bo_delayed_workqueue); bdev->nice_mode = true; INIT_LIST_HEAD(&bdev->ddestroy); - INIT_LIST_HEAD(&bdev->swap_lru); bdev->dev_mapping = NULL; - ttm_mem_init_shrink(&bdev->shrink, ttm_bo_swapout); - ret = ttm_mem_register_shrink(mem_glob, &bdev->shrink); - if (unlikely(ret != 0)) { - printk(KERN_ERR TTM_PFX - "Could not register buffer object swapout.\n"); - goto out_err2; - } + bdev->glob = glob; - bdev->ttm_bo_extra_size = - ttm_round_pot(sizeof(struct ttm_tt)) + - ttm_round_pot(sizeof(struct ttm_backend)); - - bdev->ttm_bo_size = bdev->ttm_bo_extra_size + - ttm_round_pot(sizeof(struct ttm_buffer_object)); + mutex_lock(&glob->device_list_mutex); + list_add_tail(&bdev->device_list, &glob->device_list); + mutex_unlock(&glob->device_list_mutex); return 0; -out_err2: +out_no_addr_mm: ttm_bo_clean_mm(bdev, 0); -out_err1: - __free_page(bdev->dummy_read_page); -out_err0: +out_no_sys: return ret; } EXPORT_SYMBOL(ttm_bo_device_init); @@ -1607,21 +1699,21 @@ void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo) static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) { - struct ttm_bo_device *bdev = - container_of(shrink, struct ttm_bo_device, shrink); + struct ttm_bo_global *glob = + container_of(shrink, struct ttm_bo_global, shrink); struct ttm_buffer_object *bo; int ret = -EBUSY; int put_count; uint32_t swap_placement = (TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM); - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); while (ret == -EBUSY) { - if (unlikely(list_empty(&bdev->swap_lru))) { - spin_unlock(&bdev->lru_lock); + if (unlikely(list_empty(&glob->swap_lru))) { + spin_unlock(&glob->lru_lock); return -EBUSY; } - bo = list_first_entry(&bdev->swap_lru, + bo = list_first_entry(&glob->swap_lru, struct ttm_buffer_object, swap); kref_get(&bo->list_kref); @@ -1633,16 +1725,16 @@ static int ttm_bo_swapout(struct ttm_mem_shrink *shrink) ret = ttm_bo_reserve_locked(bo, false, true, false, 0); if (unlikely(ret == -EBUSY)) { - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); ttm_bo_wait_unreserved(bo, false); kref_put(&bo->list_kref, ttm_bo_release_list); - spin_lock(&bdev->lru_lock); + spin_lock(&glob->lru_lock); } } BUG_ON(ret != 0); put_count = ttm_bo_del_from_lru(bo); - spin_unlock(&bdev->lru_lock); + spin_unlock(&glob->lru_lock); while (put_count--) kref_put(&bo->list_kref, ttm_bo_ref_bug); @@ -1696,6 +1788,6 @@ out: void ttm_bo_swapout_all(struct ttm_bo_device *bdev) { - while (ttm_bo_swapout(&bdev->shrink) == 0) + while (ttm_bo_swapout(&bdev->glob->shrink) == 0) ; } diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index bdec583..12cd47a 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -41,9 +41,9 @@ void ttm_bo_free_old_node(struct ttm_buffer_object *bo) struct ttm_mem_reg *old_mem = &bo->mem; if (old_mem->mm_node) { - spin_lock(&bo->bdev->lru_lock); + spin_lock(&bo->glob->lru_lock); drm_mm_put_block(old_mem->mm_node); - spin_unlock(&bo->bdev->lru_lock); + spin_unlock(&bo->glob->lru_lock); } old_mem->mm_node = NULL; } diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index 4e1e256..b0f7309 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -166,7 +166,7 @@ static void ttm_tt_free_user_pages(struct ttm_tt *ttm) set_page_dirty_lock(page); ttm->pages[i] = NULL; - ttm_mem_global_free(ttm->bdev->mem_glob, PAGE_SIZE); + ttm_mem_global_free(ttm->glob->mem_glob, PAGE_SIZE); put_page(page); } ttm->state = tt_unpopulated; @@ -177,8 +177,7 @@ static void ttm_tt_free_user_pages(struct ttm_tt *ttm) static struct page *__ttm_tt_get_page(struct ttm_tt *ttm, int index) { struct page *p; - struct ttm_bo_device *bdev = ttm->bdev; - struct ttm_mem_global *mem_glob = bdev->mem_glob; + struct ttm_mem_global *mem_glob = ttm->glob->mem_glob; int ret; while (NULL == (p = ttm->pages[index])) { @@ -348,7 +347,7 @@ static void ttm_tt_free_alloced_pages(struct ttm_tt *ttm) printk(KERN_ERR TTM_PFX "Erroneous page count. " "Leaking pages.\n"); - ttm_mem_global_free_page(ttm->bdev->mem_glob, + ttm_mem_global_free_page(ttm->glob->mem_glob, cur_page); __free_page(cur_page); } @@ -394,7 +393,7 @@ int ttm_tt_set_user(struct ttm_tt *ttm, struct mm_struct *mm = tsk->mm; int ret; int write = (ttm->page_flags & TTM_PAGE_FLAG_WRITE) != 0; - struct ttm_mem_global *mem_glob = ttm->bdev->mem_glob; + struct ttm_mem_global *mem_glob = ttm->glob->mem_glob; BUG_ON(num_pages != ttm->num_pages); BUG_ON((ttm->page_flags & TTM_PAGE_FLAG_USER) == 0); @@ -439,8 +438,7 @@ struct ttm_tt *ttm_tt_create(struct ttm_bo_device *bdev, unsigned long size, if (!ttm) return NULL; - ttm->bdev = bdev; - + ttm->glob = bdev->glob; ttm->num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; ttm->first_himem_page = ttm->num_pages; ttm->last_lomem_page = -1; diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 99dc521..4911461 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -155,6 +155,7 @@ struct ttm_buffer_object { * Members constant at init. */ + struct ttm_bo_global *glob; struct ttm_bo_device *bdev; unsigned long buffer_start; enum ttm_bo_type type; diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index 62ed733..9dc32f7 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -32,6 +32,7 @@ #include "ttm/ttm_bo_api.h" #include "ttm/ttm_memory.h" +#include "ttm/ttm_module.h" #include "drm_mm.h" #include "linux/workqueue.h" #include "linux/fs.h" @@ -160,7 +161,7 @@ struct ttm_tt { long last_lomem_page; uint32_t page_flags; unsigned long num_pages; - struct ttm_bo_device *bdev; + struct ttm_bo_global *glob; struct ttm_backend *be; struct task_struct *tsk; unsigned long start; @@ -355,24 +356,73 @@ struct ttm_bo_driver { void *(*sync_obj_ref) (void *sync_obj); }; -#define TTM_NUM_MEM_TYPES 8 +/** + * struct ttm_bo_global_ref - Argument to initialize a struct ttm_bo_global. + */ + +struct ttm_bo_global_ref { + struct ttm_global_reference ref; + struct ttm_mem_global *mem_glob; +}; -#define TTM_BO_PRIV_FLAG_MOVING 0 /* Buffer object is moving and needs - idling before CPU mapping */ -#define TTM_BO_PRIV_FLAG_MAX 1 /** - * struct ttm_bo_device - Buffer object driver device-specific data. + * struct ttm_bo_global - Buffer object driver global data. * * @mem_glob: Pointer to a struct ttm_mem_global object for accounting. - * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver. - * @count: Current number of buffer object. - * @pages: Current number of pinned pages. * @dummy_read_page: Pointer to a dummy page used for mapping requests * of unpopulated pages. - * @shrink: A shrink callback object used for buffre object swap. + * @shrink: A shrink callback object used for buffer object swap. * @ttm_bo_extra_size: Extra size (sizeof(struct ttm_buffer_object) excluded) * used by a buffer object. This is excluding page arrays and backing pages. * @ttm_bo_size: This is @ttm_bo_extra_size + sizeof(struct ttm_buffer_object). + * @device_list_mutex: Mutex protecting the device list. + * This mutex is held while traversing the device list for pm options. + * @lru_lock: Spinlock protecting the bo subsystem lru lists. + * @device_list: List of buffer object devices. + * @swap_lru: Lru list of buffer objects used for swapping. + */ + +struct ttm_bo_global { + + /** + * Constant after init. + */ + + struct kobject kobj; + struct ttm_mem_global *mem_glob; + struct page *dummy_read_page; + struct ttm_mem_shrink shrink; + size_t ttm_bo_extra_size; + size_t ttm_bo_size; + struct mutex device_list_mutex; + spinlock_t lru_lock; + + /** + * Protected by device_list_mutex. + */ + struct list_head device_list; + + /** + * Protected by the lru_lock. + */ + struct list_head swap_lru; + + /** + * Internal protection. + */ + atomic_t bo_count; +}; + + +#define TTM_NUM_MEM_TYPES 8 + +#define TTM_BO_PRIV_FLAG_MOVING 0 /* Buffer object is moving and needs + idling before CPU mapping */ +#define TTM_BO_PRIV_FLAG_MAX 1 +/** + * struct ttm_bo_device - Buffer object driver device-specific data. + * + * @driver: Pointer to a struct ttm_bo_driver struct setup by the driver. * @man: An array of mem_type_managers. * @addr_space_mm: Range manager for the device address space. * lru_lock: Spinlock that protects the buffer+device lru lists and @@ -390,32 +440,21 @@ struct ttm_bo_device { /* * Constant after bo device init / atomic. */ - - struct ttm_mem_global *mem_glob; + struct list_head device_list; + struct ttm_bo_global *glob; struct ttm_bo_driver *driver; - struct page *dummy_read_page; - struct ttm_mem_shrink shrink; - - size_t ttm_bo_extra_size; - size_t ttm_bo_size; - rwlock_t vm_lock; + struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES]; /* * Protected by the vm lock. */ - struct ttm_mem_type_manager man[TTM_NUM_MEM_TYPES]; struct rb_root addr_space_rb; struct drm_mm addr_space_mm; /* - * Might want to change this to one lock per manager. - */ - spinlock_t lru_lock; - /* - * Protected by the lru lock. + * Protected by the global:lru lock. */ struct list_head ddestroy; - struct list_head swap_lru; /* * Protected by load / firstopen / lastclose /unload sync. @@ -629,6 +668,9 @@ extern int ttm_bo_pci_offset(struct ttm_bo_device *bdev, unsigned long *bus_offset, unsigned long *bus_size); +extern void ttm_bo_global_release(struct ttm_global_reference *ref); +extern int ttm_bo_global_init(struct ttm_global_reference *ref); + extern int ttm_bo_device_release(struct ttm_bo_device *bdev); /** @@ -646,7 +688,7 @@ extern int ttm_bo_device_release(struct ttm_bo_device *bdev); * !0: Failure. */ extern int ttm_bo_device_init(struct ttm_bo_device *bdev, - struct ttm_mem_global *mem_glob, + struct ttm_bo_global *glob, struct ttm_bo_driver *driver, uint64_t file_page_offset); |