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 /* 23 * Concrete implementation of mali_kbase_hwcnt_backend interface for job manager 24 * backend. This module functionally interleaves between the hardware counter 25 * (hwcnt_accumulator) module (the interface consumer) and the job manager 26 * backend module (hwcnt_backend_jm). This module provides buffering 27 * functionality for the dumping requests requested by the hwcnt_accumulator 28 * consumer. This module is NOT multi-thread safe. The programmer must 29 * ensure the exposed methods are called by at most one thread at any time. 30 */ 31 32 #ifndef _KBASE_HWCNT_BACKEND_JM_WATCHDOG_H_ 33 #define _KBASE_HWCNT_BACKEND_JM_WATCHDOG_H_ 34 35 #include <hwcnt/backend/mali_kbase_hwcnt_backend.h> 36 #include <hwcnt/mali_kbase_hwcnt_watchdog_if.h> 37 38 /** 39 * kbase_hwcnt_backend_jm_watchdog_create() - Create a job manager hardware counter watchdog 40 * backend interface. 41 * @backend_iface: Non-NULL pointer to the backend interface structure that this module will 42 * extend. 43 * @watchdog_iface: Non-NULL pointer to an hardware counter watchdog interface. 44 * @out_iface: Non-NULL pointer to backend interface structure that is filled in 45 * on creation success. 46 * 47 * Calls to out_iface->dump_enable_nolock() require kbdev->hwaccess_lock held. 48 * 49 * Return: 0 on success, error otherwise. 50 */ 51 int kbase_hwcnt_backend_jm_watchdog_create(struct kbase_hwcnt_backend_interface *backend_iface, 52 struct kbase_hwcnt_watchdog_interface *watchdog_iface, 53 struct kbase_hwcnt_backend_interface *out_iface); 54 55 /** 56 * kbase_hwcnt_backend_jm_watchdog_destroy() - Destroy a job manager hardware counter watchdog 57 * backend interface. 58 * @iface: Pointer to interface to destroy. 59 * 60 * Can be safely called on an all-zeroed interface, or on an already destroyed 61 * interface. 62 */ 63 void kbase_hwcnt_backend_jm_watchdog_destroy(struct kbase_hwcnt_backend_interface *iface); 64 65 #endif /* _KBASE_HWCNT_BACKEND_JM_WATCHDOG_H_ */ 66