1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * 4 * (C) COPYRIGHT 2014-2015, 2017-2022 ARM Limited. All rights reserved. 5 * 6 * This program is free software and is provided to you under the terms of the 7 * GNU General Public License version 2 as published by the Free Software 8 * Foundation, and any use by you of this program is subject to the terms 9 * of such GNU license. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, you can access it online at 18 * http://www.gnu.org/licenses/gpl-2.0.html. 19 * 20 */ 21 22 /** 23 * DOC: Base kernel property query backend APIs 24 */ 25 26 #ifndef _KBASE_HWACCESS_GPUPROPS_H_ 27 #define _KBASE_HWACCESS_GPUPROPS_H_ 28 29 /** 30 * kbase_backend_gpuprops_get() - Fill @regdump with GPU properties read from 31 * GPU 32 * @kbdev: Device pointer 33 * @regdump: Pointer to struct kbase_gpuprops_regdump structure 34 * 35 * The caller should ensure that GPU remains powered-on during this function. 36 * 37 * Return: Zero for succeess or a Linux error code 38 */ 39 int kbase_backend_gpuprops_get(struct kbase_device *kbdev, 40 struct kbase_gpuprops_regdump *regdump); 41 42 /** 43 * kbase_backend_gpuprops_get_curr_config() - Fill @curr_config_regdump with 44 * relevant GPU properties read from 45 * the GPU registers. 46 * @kbdev: Device pointer. 47 * @curr_config_regdump: Pointer to struct kbase_current_config_regdump 48 * structure. 49 * 50 * The caller should ensure that GPU remains powered-on during this function and 51 * the caller must ensure this function returns success before using the values 52 * returned in the curr_config_regdump in any part of the kernel. 53 * 54 * Return: Zero for succeess or a Linux error code 55 */ 56 int kbase_backend_gpuprops_get_curr_config(struct kbase_device *kbdev, 57 struct kbase_current_config_regdump *curr_config_regdump); 58 59 /** 60 * kbase_backend_gpuprops_get_features - Fill @regdump with GPU properties read 61 * from GPU 62 * @kbdev: Device pointer 63 * @regdump: Pointer to struct kbase_gpuprops_regdump structure 64 * 65 * This function reads GPU properties that are dependent on the hardware 66 * features bitmask. It will power-on the GPU if required. 67 * 68 * Return: Zero for succeess or a Linux error code 69 */ 70 int kbase_backend_gpuprops_get_features(struct kbase_device *kbdev, 71 struct kbase_gpuprops_regdump *regdump); 72 73 /** 74 * kbase_backend_gpuprops_get_l2_features - Fill @regdump with L2_FEATURES read 75 * from GPU 76 * @kbdev: Device pointer 77 * @regdump: Pointer to struct kbase_gpuprops_regdump structure 78 * 79 * This function reads L2_FEATURES register that is dependent on the hardware 80 * features bitmask. It will power-on the GPU if required. 81 * 82 * Return: Zero on success, Linux error code on failure 83 */ 84 int kbase_backend_gpuprops_get_l2_features(struct kbase_device *kbdev, 85 struct kbase_gpuprops_regdump *regdump); 86 87 88 #endif /* _KBASE_HWACCESS_GPUPROPS_H_ */ 89