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_CSF_FIRMWARE_CORE_DUMP_H_ 23 #define _KBASE_CSF_FIRMWARE_CORE_DUMP_H_ 24 25 struct kbase_device; 26 27 /** Offset of the last field of core dump entry from the image header */ 28 #define CORE_DUMP_ENTRY_START_ADDR_OFFSET (0x4) 29 30 /** 31 * kbase_csf_firmware_core_dump_entry_parse() - Parse a "core dump" entry from 32 * the image header. 33 * 34 * @kbdev: Instance of a GPU platform device that implements a CSF interface. 35 * @entry: Pointer to section. 36 * 37 * Read a "core dump" entry from the image header, check the version for 38 * compatibility and store the address pointer. 39 * 40 * Return: 0 if successfully parse entry, negative error code otherwise. 41 */ 42 int kbase_csf_firmware_core_dump_entry_parse(struct kbase_device *kbdev, const u32 *entry); 43 44 /** 45 * kbase_csf_firmware_core_dump_init() - Initialize firmware core dump support 46 * 47 * @kbdev: Instance of a GPU platform device that implements a CSF interface. 48 * Must be zero-initialized. 49 * 50 * Creates the fw_core_dump debugfs file through which to request a firmware 51 * core dump. The created debugfs file is cleaned up as part of kbdev debugfs 52 * cleanup. 53 * 54 * The fw_core_dump debugs file that case be used in the following way: 55 * 56 * To explicitly request core dump: 57 * echo 1 >/sys/kernel/debug/mali0/fw_core_dump 58 * 59 * To output current core dump (after explicitly requesting a core dump, or 60 * kernel driver reported an internal firmware error): 61 * cat /sys/kernel/debug/mali0/fw_core_dump 62 */ 63 void kbase_csf_firmware_core_dump_init(struct kbase_device *const kbdev); 64 65 #endif /* _KBASE_CSF_FIRMWARE_CORE_DUMP_H_ */ 66