| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Intel Management Engine Interface (Intel MEI) Linux driver |
| Tomas Winkler | 733ba91 | 2012-02-09 19:25:53 +0200 | [diff] [blame] | 4 | * Copyright (c) 2003-2012, Intel Corporation. |
| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 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 | |
| Tomas Winkler | 4f3afe1 | 2012-05-09 16:38:59 +0300 | [diff] [blame] | 22 | #include <linux/mei.h> |
| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 23 | #include "mei_dev.h" |
| 24 | |
| 25 | |
| Oren Weil | 9ce178e | 2011-09-07 09:03:09 +0300 | [diff] [blame] | 26 | #define AMT_WD_DEFAULT_TIMEOUT 120 /* seconds */ |
| 27 | #define AMT_WD_MIN_TIMEOUT 120 /* seconds */ |
| 28 | #define AMT_WD_MAX_TIMEOUT 65535 /* seconds */ |
| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 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, |
| Tomas Winkler | edf1eed | 2012-02-09 19:25:54 +0200 | [diff] [blame] | 36 | unsigned char *buffer, |
| 37 | unsigned long buffer_length); |
| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 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 | |
| Tomas Winkler | 726917f | 2012-06-25 23:46:28 +0300 | [diff] [blame] | 44 | bool mei_hbuf_is_empty(struct mei_device *dev); |
| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 45 | |
| Tomas Winkler | 726917f | 2012-06-25 23:46:28 +0300 | [diff] [blame] | 46 | int mei_hbuf_empty_slots(struct mei_device *dev); |
| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 47 | |
| Tomas Winkler | 24aadc8 | 2012-06-25 23:46:27 +0300 | [diff] [blame] | 48 | static inline size_t mei_hbuf_max_data(const struct mei_device *dev) |
| 49 | { |
| 50 | return dev->hbuf_depth * sizeof(u32) - sizeof(struct mei_msg_hdr); |
| 51 | } |
| 52 | |
| Tomas Winkler | 7bdf72d | 2012-07-04 19:24:52 +0300 | [diff] [blame] | 53 | /* get slots (dwords) from a message length + header (bytes) */ |
| 54 | static inline unsigned char mei_data2slots(size_t length) |
| 55 | { |
| 56 | return DIV_ROUND_UP(sizeof(struct mei_msg_hdr) + length, 4); |
| 57 | } |
| 58 | |
| Tomas Winkler | 726917f | 2012-06-25 23:46:28 +0300 | [diff] [blame] | 59 | int mei_count_full_read_slots(struct mei_device *dev); |
| 60 | |
| 61 | |
| 62 | int mei_flow_ctrl_creds(struct mei_device *dev, struct mei_cl *cl); |
| 63 | |
| 64 | |
| Tomas Winkler | 24aadc8 | 2012-06-25 23:46:27 +0300 | [diff] [blame] | 65 | |
| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 66 | int mei_wd_send(struct mei_device *dev); |
| 67 | int mei_wd_stop(struct mei_device *dev, bool preserve); |
| Tomas Winkler | 9487eb0 | 2012-04-03 23:34:58 +0300 | [diff] [blame] | 68 | int mei_wd_host_init(struct mei_device *dev); |
| Tomas Winkler | 70cd533 | 2011-12-22 18:50:50 +0200 | [diff] [blame] | 69 | /* |
| 70 | * mei_watchdog_register - Registering watchdog interface |
| 71 | * once we got connection to the WD Client |
| 72 | * @dev - mei device |
| 73 | */ |
| 74 | void mei_watchdog_register(struct mei_device *dev); |
| 75 | /* |
| Justin P. Mattock | 5f9092f | 2012-03-12 07:18:09 -0700 | [diff] [blame] | 76 | * mei_watchdog_unregister - Unregistering watchdog interface |
| Tomas Winkler | 70cd533 | 2011-12-22 18:50:50 +0200 | [diff] [blame] | 77 | * @dev - mei device |
| 78 | */ |
| 79 | void mei_watchdog_unregister(struct mei_device *dev); |
| Oren Weil | 3ce7272 | 2011-05-15 13:43:43 +0300 | [diff] [blame] | 80 | |
| 81 | int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl); |
| 82 | |
| 83 | int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl); |
| 84 | |
| 85 | int mei_disconnect(struct mei_device *dev, struct mei_cl *cl); |
| 86 | int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl); |
| 87 | int mei_connect(struct mei_device *dev, struct mei_cl *cl); |
| 88 | |
| 89 | #endif /* _MEI_INTERFACE_H_ */ |