1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * 4 * (C) COPYRIGHT 2021-2022 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 #ifndef _KBASE_PBHA_H 23 #define _KBASE_PBHA_H 24 25 #include <mali_kbase.h> 26 27 /** 28 * kbasep_pbha_supported - check whether PBHA registers are 29 * available 30 * 31 * @kbdev: Device pointer 32 * 33 * Should only be used in mali_kbase_pbha* files - thus the 34 * kbase[p] prefix. 35 * 36 * Return: True if pbha is supported, false otherwise 37 */ 38 bool kbasep_pbha_supported(struct kbase_device *kbdev); 39 40 /** 41 * kbase_pbha_record_settings - record PBHA settings to be applied when 42 * L2 is powered down 43 * 44 * @kbdev: Device pointer 45 * @runtime: true if it's called at runtime and false if it's called on init. 46 * @id: memory access source ID 47 * @read_setting: Read setting 48 * @write_setting: Write setting 49 * 50 * Return: 0 on success, otherwise error code. 51 */ 52 int kbase_pbha_record_settings(struct kbase_device *kbdev, bool runtime, 53 unsigned int id, unsigned int read_setting, 54 unsigned int write_setting); 55 56 /** 57 * kbase_pbha_write_settings - write recorded PBHA settings to GPU 58 * registers 59 * 60 * @kbdev: Device pointer 61 * 62 * Only valid to call this function when L2 is powered down, otherwise 63 * this will not affect PBHA settings. 64 */ 65 void kbase_pbha_write_settings(struct kbase_device *kbdev); 66 67 /** 68 * kbase_pbha_read_dtb - read PBHA settings from DTB and record it to be 69 * applied when L2 is powered down 70 * 71 * @kbdev: Device pointer 72 * 73 * Return: 0 on success, otherwise error code. 74 */ 75 int kbase_pbha_read_dtb(struct kbase_device *kbdev); 76 77 #endif /* _KBASE_PBHA_H */ 78