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1/* SPDX-License-Identifier: GPL-2.0 OR MIT */2/*3 * Copyright 2021 VMware, Inc.4 *5 * Permission is hereby granted, free of charge, to any person6 * obtaining a copy of this software and associated documentation7 * files (the "Software"), to deal in the Software without8 * restriction, including without limitation the rights to use, copy,9 * modify, merge, publish, distribute, sublicense, and/or sell copies10 * of the Software, and to permit persons to whom the Software is11 * furnished to do so, subject to the following conditions:12 *13 * The above copyright notice and this permission notice shall be14 * included in all copies or substantial portions of the Software.15 *16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS20 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN21 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE23 * SOFTWARE.24 *25 */26 27#include "vmwgfx_drv.h"28 29#include <drm/ttm/ttm_device.h>30#include <drm/ttm/ttm_placement.h>31#include <drm/ttm/ttm_resource.h>32#include <linux/slab.h>33 34 35static int vmw_sys_man_alloc(struct ttm_resource_manager *man,36 struct ttm_buffer_object *bo,37 const struct ttm_place *place,38 struct ttm_resource **res)39{40 *res = kzalloc(sizeof(**res), GFP_KERNEL);41 if (!*res)42 return -ENOMEM;43 44 ttm_resource_init(bo, place, *res);45 return 0;46}47 48static void vmw_sys_man_free(struct ttm_resource_manager *man,49 struct ttm_resource *res)50{51 ttm_resource_fini(man, res);52 kfree(res);53}54 55static const struct ttm_resource_manager_func vmw_sys_manager_func = {56 .alloc = vmw_sys_man_alloc,57 .free = vmw_sys_man_free,58};59 60int vmw_sys_man_init(struct vmw_private *dev_priv)61{62 struct ttm_device *bdev = &dev_priv->bdev;63 struct ttm_resource_manager *man =64 kzalloc(sizeof(*man), GFP_KERNEL);65 66 if (!man)67 return -ENOMEM;68 69 man->use_tt = true;70 man->func = &vmw_sys_manager_func;71 72 ttm_resource_manager_init(man, bdev, 0);73 ttm_set_driver_manager(bdev, VMW_PL_SYSTEM, man);74 ttm_resource_manager_set_used(man, true);75 return 0;76}77 78void vmw_sys_man_fini(struct vmw_private *dev_priv)79{80 struct ttm_resource_manager *man = ttm_manager_type(&dev_priv->bdev,81 VMW_PL_SYSTEM);82 83 ttm_resource_manager_evict_all(&dev_priv->bdev, man);84 85 ttm_resource_manager_set_used(man, false);86 ttm_resource_manager_cleanup(man);87 88 ttm_set_driver_manager(&dev_priv->bdev, VMW_PL_SYSTEM, NULL);89 kfree(man);90}91