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_bo_driver.h> 30 #include <drm/ttm/ttm_device.h> 31 #include <drm/ttm/ttm_placement.h> 32 #include <drm/ttm/ttm_resource.h> 33 #include <linux/slab.h> 34 35 36 static int vmw_sys_man_alloc(struct ttm_resource_manager *man, 37 struct ttm_buffer_object *bo, 38 const struct ttm_place *place, 39 struct ttm_resource **res) 40 { 41 *res = kzalloc(sizeof(**res), GFP_KERNEL); 42 if (!*res) 43 return -ENOMEM; 44 45 ttm_resource_init(bo, place, *res); 46 return 0; 47 } 48 49 static void vmw_sys_man_free(struct ttm_resource_manager *man, 50 struct ttm_resource *res) 51 { 52 ttm_resource_fini(man, res); 53 kfree(res); 54 } 55 56 static const struct ttm_resource_manager_func vmw_sys_manager_func = { 57 .alloc = vmw_sys_man_alloc, 58 .free = vmw_sys_man_free, 59 }; 60 61 int vmw_sys_man_init(struct vmw_private *dev_priv) 62 { 63 struct ttm_device *bdev = &dev_priv->bdev; 64 struct ttm_resource_manager *man = 65 kzalloc(sizeof(*man), GFP_KERNEL); 66 67 if (!man) 68 return -ENOMEM; 69 70 man->use_tt = true; 71 man->func = &vmw_sys_manager_func; 72 73 ttm_resource_manager_init(man, bdev, 0); 74 ttm_set_driver_manager(bdev, VMW_PL_SYSTEM, man); 75 ttm_resource_manager_set_used(man, true); 76 return 0; 77 } 78 79 void vmw_sys_man_fini(struct vmw_private *dev_priv) 80 { 81 struct ttm_resource_manager *man = ttm_manager_type(&dev_priv->bdev, 82 VMW_PL_SYSTEM); 83 84 ttm_resource_manager_evict_all(&dev_priv->bdev, man); 85 86 ttm_resource_manager_set_used(man, false); 87 ttm_resource_manager_cleanup(man); 88 89 ttm_set_driver_manager(&dev_priv->bdev, VMW_PL_SYSTEM, NULL); 90 kfree(man); 91 } 92