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 person 6 * obtaining a copy of this software and associated documentation 7 * files (the "Software"), to deal in the Software without 8 * restriction, including without limitation the rights to use, copy, 9 * modify, merge, publish, distribute, sublicense, and/or sell copies 10 * of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be 14 * 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 OF 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 20 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 21 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 * 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 35 static 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 48 static 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 55 static const struct ttm_resource_manager_func vmw_sys_manager_func = { 56 .alloc = vmw_sys_man_alloc, 57 .free = vmw_sys_man_free, 58 }; 59 60 int 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 78 void 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