1 /* 2 * 3 * Intel Management Engine Interface (Intel MEI) Linux driver 4 * Copyright (c) 2003-2012, Intel Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms and conditions of the GNU General Public License, 8 * version 2, as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 * more details. 14 * 15 */ 16 17 18 19 #ifndef _MEI_INTERFACE_H_ 20 #define _MEI_INTERFACE_H_ 21 22 #include "mei.h" 23 #include "mei_dev.h" 24 25 26 #define AMT_WD_DEFAULT_TIMEOUT 120 /* seconds */ 27 #define AMT_WD_MIN_TIMEOUT 120 /* seconds */ 28 #define AMT_WD_MAX_TIMEOUT 65535 /* seconds */ 29 30 #define MEI_WATCHDOG_DATA_SIZE 16 31 #define MEI_START_WD_DATA_SIZE 20 32 #define MEI_WD_PARAMS_SIZE 4 33 34 35 void mei_read_slots(struct mei_device *dev, 36 unsigned char *buffer, 37 unsigned long buffer_length); 38 39 int mei_write_message(struct mei_device *dev, 40 struct mei_msg_hdr *header, 41 unsigned char *write_buffer, 42 unsigned long write_length); 43 44 int mei_host_buffer_is_empty(struct mei_device *dev); 45 46 int mei_count_full_read_slots(struct mei_device *dev); 47 48 int mei_count_empty_write_slots(struct mei_device *dev); 49 50 int mei_flow_ctrl_creds(struct mei_device *dev, struct mei_cl *cl); 51 52 int mei_wd_send(struct mei_device *dev); 53 int mei_wd_stop(struct mei_device *dev, bool preserve); 54 bool mei_wd_host_init(struct mei_device *dev); 55 void mei_wd_set_start_timeout(struct mei_device *dev, u16 timeout); 56 /* 57 * mei_watchdog_register - Registering watchdog interface 58 * once we got connection to the WD Client 59 * @dev - mei device 60 */ 61 void mei_watchdog_register(struct mei_device *dev); 62 /* 63 * mei_watchdog_unregister - Unregistering watchdog interface 64 * @dev - mei device 65 */ 66 void mei_watchdog_unregister(struct mei_device *dev); 67 68 int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl); 69 70 int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl); 71 72 int mei_disconnect(struct mei_device *dev, struct mei_cl *cl); 73 int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl); 74 int mei_connect(struct mei_device *dev, struct mei_cl *cl); 75 76 #endif /* _MEI_INTERFACE_H_ */ 77