| /************************************************************************** |
| * |
| * Copyright (c) 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA |
| * All Rights Reserved. |
| * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA |
| * All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| **************************************************************************/ |
| /* |
| * Authors: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> |
| */ |
| |
| #include <drm/drmP.h> |
| #include "psb_ttm_fence_user.h" |
| #include "ttm/ttm_object.h" |
| #include "psb_ttm_fence_driver.h" |
| #include "psb_ttm_userobj_api.h" |
| |
| /** |
| * struct ttm_fence_user_object |
| * |
| * @base: The base object used for user-space visibility and refcounting. |
| * |
| * @fence: The fence object itself. |
| * |
| */ |
| |
| struct ttm_fence_user_object { |
| struct ttm_base_object base; |
| struct ttm_fence_object fence; |
| }; |
| |
| static struct ttm_fence_user_object *ttm_fence_user_object_lookup( |
| struct ttm_object_file *tfile, |
| uint32_t handle) |
| { |
| struct ttm_base_object *base; |
| |
| base = ttm_base_object_lookup(tfile, handle); |
| if (unlikely(base == NULL)) { |
| printk(KERN_ERR "Invalid fence handle 0x%08lx\n", |
| (unsigned long)handle); |
| return NULL; |
| } |
| |
| if (unlikely(base->object_type != ttm_fence_type)) { |
| ttm_base_object_unref(&base); |
| printk(KERN_ERR "Invalid fence handle 0x%08lx\n", |
| (unsigned long)handle); |
| return NULL; |
| } |
| |
| return container_of(base, struct ttm_fence_user_object, base); |
| } |
| |
| /* |
| * The fence object destructor. |
| */ |
| |
| static void ttm_fence_user_destroy(struct ttm_fence_object *fence) |
| { |
| struct ttm_fence_user_object *ufence = |
| container_of(fence, struct ttm_fence_user_object, fence); |
| |
| ttm_mem_global_free(fence->fdev->mem_glob, sizeof(*ufence)); |
| kfree(ufence); |
| } |
| |
| /* |
| * The base object destructor. We basically unly unreference the |
| * attached fence object. |
| */ |
| |
| static void ttm_fence_user_release(struct ttm_base_object **p_base) |
| { |
| struct ttm_fence_user_object *ufence; |
| struct ttm_base_object *base = *p_base; |
| struct ttm_fence_object *fence; |
| |
| *p_base = NULL; |
| |
| if (unlikely(base == NULL)) |
| return; |
| |
| ufence = container_of(base, struct ttm_fence_user_object, base); |
| fence = &ufence->fence; |
| ttm_fence_object_unref(&fence); |
| } |
| |
| int |
| ttm_fence_user_create(struct ttm_fence_device *fdev, |
| struct ttm_object_file *tfile, |
| uint32_t fence_class, |
| uint32_t fence_types, |
| uint32_t create_flags, |
| struct ttm_fence_object **fence, |
| uint32_t *user_handle) |
| { |
| int ret; |
| struct ttm_fence_object *tmp; |
| struct ttm_fence_user_object *ufence; |
| |
| ret = ttm_mem_global_alloc(fdev->mem_glob, |
| sizeof(*ufence), |
| false, |
| false); |
| if (unlikely(ret != 0)) |
| return -ENOMEM; |
| |
| ufence = kmalloc(sizeof(*ufence), GFP_KERNEL); |
| if (unlikely(ufence == NULL)) { |
| ttm_mem_global_free(fdev->mem_glob, sizeof(*ufence)); |
| return -ENOMEM; |
| } |
| |
| ret = ttm_fence_object_init(fdev, |
| fence_class, |
| fence_types, create_flags, |
| &ttm_fence_user_destroy, &ufence->fence); |
| |
| if (unlikely(ret != 0)) |
| goto out_err0; |
| |
| /* |
| * One fence ref is held by the fence ptr we return. |
| * The other one by the base object. Need to up the |
| * fence refcount before we publish this object to |
| * user-space. |
| */ |
| |
| tmp = ttm_fence_object_ref(&ufence->fence); |
| ret = ttm_base_object_init(tfile, &ufence->base, |
| false, ttm_fence_type, |
| &ttm_fence_user_release, NULL); |
| |
| if (unlikely(ret != 0)) |
| goto out_err1; |
| |
| *fence = &ufence->fence; |
| *user_handle = ufence->base.hash.key; |
| |
| return 0; |
| out_err1: |
| ttm_fence_object_unref(&tmp); |
| tmp = &ufence->fence; |
| ttm_fence_object_unref(&tmp); |
| return ret; |
| out_err0: |
| ttm_mem_global_free(fdev->mem_glob, sizeof(*ufence)); |
| kfree(ufence); |
| return ret; |
| } |
| |
| int ttm_fence_signaled_ioctl(struct ttm_object_file *tfile, void *data) |
| { |
| int ret; |
| union ttm_fence_signaled_arg *arg = data; |
| struct ttm_fence_object *fence; |
| struct ttm_fence_info info; |
| struct ttm_fence_user_object *ufence; |
| struct ttm_base_object *base; |
| ret = 0; |
| |
| ufence = ttm_fence_user_object_lookup(tfile, arg->req.handle); |
| if (unlikely(ufence == NULL)) |
| return -EINVAL; |
| |
| fence = &ufence->fence; |
| |
| if (arg->req.flush) { |
| ret = ttm_fence_object_flush(fence, arg->req.fence_type); |
| if (unlikely(ret != 0)) |
| goto out; |
| } |
| |
| info = ttm_fence_get_info(fence); |
| arg->rep.signaled_types = info.signaled_types; |
| arg->rep.fence_error = info.error; |
| |
| out: |
| base = &ufence->base; |
| ttm_base_object_unref(&base); |
| return ret; |
| } |
| |
| int ttm_fence_finish_ioctl(struct ttm_object_file *tfile, void *data) |
| { |
| int ret; |
| union ttm_fence_finish_arg *arg = data; |
| struct ttm_fence_user_object *ufence; |
| struct ttm_base_object *base; |
| struct ttm_fence_object *fence; |
| ret = 0; |
| |
| ufence = ttm_fence_user_object_lookup(tfile, arg->req.handle); |
| if (unlikely(ufence == NULL)) |
| return -EINVAL; |
| |
| fence = &ufence->fence; |
| |
| ret = ttm_fence_object_wait(fence, |
| arg->req.mode & TTM_FENCE_FINISH_MODE_LAZY, |
| true, arg->req.fence_type); |
| if (likely(ret == 0)) { |
| struct ttm_fence_info info = ttm_fence_get_info(fence); |
| |
| arg->rep.signaled_types = info.signaled_types; |
| arg->rep.fence_error = info.error; |
| } |
| |
| base = &ufence->base; |
| ttm_base_object_unref(&base); |
| |
| return ret; |
| } |
| |
| int ttm_fence_unref_ioctl(struct ttm_object_file *tfile, void *data) |
| { |
| struct ttm_fence_unref_arg *arg = data; |
| int ret = 0; |
| |
| ret = ttm_ref_object_base_unref(tfile, arg->handle, ttm_fence_type); |
| return ret; |
| } |