190e0b5f1STomas Winkler /* 290e0b5f1STomas Winkler * 390e0b5f1STomas Winkler * Intel Management Engine Interface (Intel MEI) Linux driver 490e0b5f1STomas Winkler * Copyright (c) 2003-2012, Intel Corporation. 590e0b5f1STomas Winkler * 690e0b5f1STomas Winkler * This program is free software; you can redistribute it and/or modify it 790e0b5f1STomas Winkler * under the terms and conditions of the GNU General Public License, 890e0b5f1STomas Winkler * version 2, as published by the Free Software Foundation. 990e0b5f1STomas Winkler * 1090e0b5f1STomas Winkler * This program is distributed in the hope it will be useful, but WITHOUT 1190e0b5f1STomas Winkler * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1290e0b5f1STomas Winkler * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 1390e0b5f1STomas Winkler * more details. 1490e0b5f1STomas Winkler * 1590e0b5f1STomas Winkler */ 1690e0b5f1STomas Winkler 1790e0b5f1STomas Winkler #ifndef _MEI_CLIENT_H_ 1890e0b5f1STomas Winkler #define _MEI_CLIENT_H_ 1990e0b5f1STomas Winkler 2090e0b5f1STomas Winkler #include <linux/types.h> 2190e0b5f1STomas Winkler #include <linux/watchdog.h> 2290e0b5f1STomas Winkler #include <linux/poll.h> 2390e0b5f1STomas Winkler #include <linux/mei.h> 2490e0b5f1STomas Winkler 2590e0b5f1STomas Winkler #include "mei_dev.h" 2690e0b5f1STomas Winkler 2779563db9STomas Winkler /* 2879563db9STomas Winkler * reference counting base function 2979563db9STomas Winkler */ 3079563db9STomas Winkler void mei_me_cl_init(struct mei_me_client *me_cl); 3179563db9STomas Winkler void mei_me_cl_put(struct mei_me_client *me_cl); 3279563db9STomas Winkler struct mei_me_client *mei_me_cl_get(struct mei_me_client *me_cl); 33d880f329STomas Winkler 34b7d88514STomas Winkler void mei_me_cl_add(struct mei_device *dev, struct mei_me_client *me_cl); 35b7d88514STomas Winkler void mei_me_cl_del(struct mei_device *dev, struct mei_me_client *me_cl); 36b7d88514STomas Winkler 37b7d88514STomas Winkler struct mei_me_client *mei_me_cl_by_uuid(struct mei_device *dev, 3879563db9STomas Winkler const uuid_le *uuid); 3979563db9STomas Winkler struct mei_me_client *mei_me_cl_by_id(struct mei_device *dev, u8 client_id); 40d880f329STomas Winkler struct mei_me_client *mei_me_cl_by_uuid_id(struct mei_device *dev, 41d880f329STomas Winkler const uuid_le *uuid, u8 client_id); 4279563db9STomas Winkler void mei_me_cl_rm_by_uuid(struct mei_device *dev, const uuid_le *uuid); 4379563db9STomas Winkler void mei_me_cl_rm_by_uuid_id(struct mei_device *dev, 4479563db9STomas Winkler const uuid_le *uuid, u8 id); 4579563db9STomas Winkler void mei_me_cl_rm_all(struct mei_device *dev); 4690e0b5f1STomas Winkler 47d49ed64aSAlexander Usyskin /** 48d49ed64aSAlexander Usyskin * mei_me_cl_is_active - check whether me client is active in the fw 49d49ed64aSAlexander Usyskin * 50d49ed64aSAlexander Usyskin * @me_cl: me client 51d49ed64aSAlexander Usyskin * 52d49ed64aSAlexander Usyskin * Return: true if the me client is active in the firmware 53d49ed64aSAlexander Usyskin */ 54d49ed64aSAlexander Usyskin static inline bool mei_me_cl_is_active(const struct mei_me_client *me_cl) 55d49ed64aSAlexander Usyskin { 56d49ed64aSAlexander Usyskin return !list_empty_careful(&me_cl->list); 57d49ed64aSAlexander Usyskin } 58d49ed64aSAlexander Usyskin 59d49ed64aSAlexander Usyskin /** 60d49ed64aSAlexander Usyskin * mei_me_cl_uuid - return me client protocol name (uuid) 61d49ed64aSAlexander Usyskin * 62d49ed64aSAlexander Usyskin * @me_cl: me client 63d49ed64aSAlexander Usyskin * 64d49ed64aSAlexander Usyskin * Return: me client protocol name 65d49ed64aSAlexander Usyskin */ 66d49ed64aSAlexander Usyskin static inline const uuid_le *mei_me_cl_uuid(const struct mei_me_client *me_cl) 67d49ed64aSAlexander Usyskin { 68d49ed64aSAlexander Usyskin return &me_cl->props.protocol_name; 69d49ed64aSAlexander Usyskin } 70d49ed64aSAlexander Usyskin 7190e0b5f1STomas Winkler /* 7290e0b5f1STomas Winkler * MEI IO Functions 7390e0b5f1STomas Winkler */ 74bca67d68STomas Winkler struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, enum mei_cb_file_ops type, 75bca67d68STomas Winkler struct file *fp); 7690e0b5f1STomas Winkler void mei_io_cb_free(struct mei_cl_cb *priv_cb); 775db7514dSTomas Winkler int mei_io_cb_alloc_buf(struct mei_cl_cb *cb, size_t length); 7890e0b5f1STomas Winkler 7990e0b5f1STomas Winkler 8090e0b5f1STomas Winkler /** 8190e0b5f1STomas Winkler * mei_io_list_init - Sets up a queue list. 8290e0b5f1STomas Winkler * 8390e0b5f1STomas Winkler * @list: An instance cl callback structure 8490e0b5f1STomas Winkler */ 8590e0b5f1STomas Winkler static inline void mei_io_list_init(struct mei_cl_cb *list) 8690e0b5f1STomas Winkler { 8790e0b5f1STomas Winkler INIT_LIST_HEAD(&list->list); 8890e0b5f1STomas Winkler } 895456796bSAlexander Usyskin void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl); 905456796bSAlexander Usyskin 9190e0b5f1STomas Winkler /* 9290e0b5f1STomas Winkler * MEI Host Client Functions 9390e0b5f1STomas Winkler */ 9490e0b5f1STomas Winkler 9590e0b5f1STomas Winkler struct mei_cl *mei_cl_allocate(struct mei_device *dev); 9690e0b5f1STomas Winkler void mei_cl_init(struct mei_cl *cl, struct mei_device *dev); 9790e0b5f1STomas Winkler 9890e0b5f1STomas Winkler 99781d0d89STomas Winkler int mei_cl_link(struct mei_cl *cl, int id); 10090e0b5f1STomas Winkler int mei_cl_unlink(struct mei_cl *cl); 10190e0b5f1STomas Winkler 10203b8d341STomas Winkler struct mei_cl *mei_cl_alloc_linked(struct mei_device *dev, int id); 10303b8d341STomas Winkler 104a9bed610STomas Winkler struct mei_cl_cb *mei_cl_read_cb(const struct mei_cl *cl, 105a9bed610STomas Winkler const struct file *fp); 106a9bed610STomas Winkler void mei_cl_read_cb_flush(const struct mei_cl *cl, const struct file *fp); 107bca67d68STomas Winkler struct mei_cl_cb *mei_cl_alloc_cb(struct mei_cl *cl, size_t length, 108bca67d68STomas Winkler enum mei_cb_file_ops type, struct file *fp); 109a9bed610STomas Winkler int mei_cl_flush_queues(struct mei_cl *cl, const struct file *fp); 11090e0b5f1STomas Winkler 11190e0b5f1STomas Winkler int mei_cl_flow_ctrl_creds(struct mei_cl *cl); 11290e0b5f1STomas Winkler 11390e0b5f1STomas Winkler int mei_cl_flow_ctrl_reduce(struct mei_cl *cl); 11490e0b5f1STomas Winkler /* 11590e0b5f1STomas Winkler * MEI input output function prototype 11690e0b5f1STomas Winkler */ 1176a84d63dSTomas Winkler 1186a84d63dSTomas Winkler /** 1196a84d63dSTomas Winkler * mei_cl_is_connected - host client is connected 1206a84d63dSTomas Winkler * 121d49ed64aSAlexander Usyskin * @cl: host client 1226a84d63dSTomas Winkler * 123d49ed64aSAlexander Usyskin * Return: true if the host client is connected 1246a84d63dSTomas Winkler */ 125b950ac1dSTomas Winkler static inline bool mei_cl_is_connected(struct mei_cl *cl) 126b950ac1dSTomas Winkler { 127ab3ae009STomas Winkler return cl->state == MEI_FILE_CONNECTED; 128b950ac1dSTomas Winkler } 129b950ac1dSTomas Winkler 130d49ed64aSAlexander Usyskin /** 131d49ed64aSAlexander Usyskin * mei_cl_me_id - me client id 132d49ed64aSAlexander Usyskin * 133d49ed64aSAlexander Usyskin * @cl: host client 134d49ed64aSAlexander Usyskin * 135d49ed64aSAlexander Usyskin * Return: me client id or 0 if client is not connected 136d49ed64aSAlexander Usyskin */ 137d49ed64aSAlexander Usyskin static inline u8 mei_cl_me_id(const struct mei_cl *cl) 138d49ed64aSAlexander Usyskin { 139d49ed64aSAlexander Usyskin return cl->me_cl ? cl->me_cl->client_id : 0; 140d49ed64aSAlexander Usyskin } 141d49ed64aSAlexander Usyskin 142d49ed64aSAlexander Usyskin /** 143d49ed64aSAlexander Usyskin * mei_cl_mtu - maximal message that client can send and receive 144d49ed64aSAlexander Usyskin * 145d49ed64aSAlexander Usyskin * @cl: host client 146d49ed64aSAlexander Usyskin * 147d49ed64aSAlexander Usyskin * Return: mtu 148d49ed64aSAlexander Usyskin */ 149d49ed64aSAlexander Usyskin static inline size_t mei_cl_mtu(const struct mei_cl *cl) 150d49ed64aSAlexander Usyskin { 151d49ed64aSAlexander Usyskin return cl->me_cl->props.max_msg_length; 152d49ed64aSAlexander Usyskin } 153d49ed64aSAlexander Usyskin 154d49ed64aSAlexander Usyskin /** 155d49ed64aSAlexander Usyskin * mei_cl_is_fixed_address - check whether the me client uses fixed address 156d49ed64aSAlexander Usyskin * 157d49ed64aSAlexander Usyskin * @cl: host client 158d49ed64aSAlexander Usyskin * 159d49ed64aSAlexander Usyskin * Return: true if the client is connected and it has fixed me address 160d49ed64aSAlexander Usyskin */ 161d49ed64aSAlexander Usyskin static inline bool mei_cl_is_fixed_address(const struct mei_cl *cl) 162d49ed64aSAlexander Usyskin { 163d49ed64aSAlexander Usyskin return cl->me_cl && cl->me_cl->props.fixed_address; 164d49ed64aSAlexander Usyskin } 165d49ed64aSAlexander Usyskin 166d49ed64aSAlexander Usyskin /** 167d49ed64aSAlexander Usyskin * mei_cl_is_single_recv_buf- check whether the me client 168d49ed64aSAlexander Usyskin * uses single receiving buffer 169d49ed64aSAlexander Usyskin * 170d49ed64aSAlexander Usyskin * @cl: host client 171d49ed64aSAlexander Usyskin * 172d49ed64aSAlexander Usyskin * Return: true if single_recv_buf == 1; 0 otherwise 173d49ed64aSAlexander Usyskin */ 174d49ed64aSAlexander Usyskin static inline bool mei_cl_is_single_recv_buf(const struct mei_cl *cl) 175d49ed64aSAlexander Usyskin { 176d49ed64aSAlexander Usyskin return cl->me_cl->props.single_recv_buf; 177d49ed64aSAlexander Usyskin } 178d49ed64aSAlexander Usyskin 179d49ed64aSAlexander Usyskin /** 180d49ed64aSAlexander Usyskin * mei_cl_uuid - client's uuid 181d49ed64aSAlexander Usyskin * 182d49ed64aSAlexander Usyskin * @cl: host client 183d49ed64aSAlexander Usyskin * 184d49ed64aSAlexander Usyskin * Return: return uuid of connected me client 185d49ed64aSAlexander Usyskin */ 186d49ed64aSAlexander Usyskin static inline const uuid_le *mei_cl_uuid(const struct mei_cl *cl) 187d49ed64aSAlexander Usyskin { 188d49ed64aSAlexander Usyskin return mei_me_cl_uuid(cl->me_cl); 189d49ed64aSAlexander Usyskin } 190d49ed64aSAlexander Usyskin 1911df629efSAlexander Usyskin /** 1921df629efSAlexander Usyskin * mei_cl_host_addr - client's host address 1931df629efSAlexander Usyskin * 1941df629efSAlexander Usyskin * @cl: host client 1951df629efSAlexander Usyskin * 1961df629efSAlexander Usyskin * Return: 0 for fixed address client, host address for dynamic client 1971df629efSAlexander Usyskin */ 1981df629efSAlexander Usyskin static inline u8 mei_cl_host_addr(const struct mei_cl *cl) 1991df629efSAlexander Usyskin { 2001df629efSAlexander Usyskin return mei_cl_is_fixed_address(cl) ? 0 : cl->host_client_id; 2011df629efSAlexander Usyskin } 2021df629efSAlexander Usyskin 20390e0b5f1STomas Winkler int mei_cl_disconnect(struct mei_cl *cl); 2043c666182STomas Winkler void mei_cl_set_disconnected(struct mei_cl *cl); 2053c666182STomas Winkler int mei_cl_irq_disconnect(struct mei_cl *cl, struct mei_cl_cb *cb, 2063c666182STomas Winkler struct mei_cl_cb *cmpl_list); 207d49ed64aSAlexander Usyskin int mei_cl_connect(struct mei_cl *cl, struct mei_me_client *me_cl, 208d49ed64aSAlexander Usyskin struct file *file); 2090c53357cSTomas Winkler int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb, 2100c53357cSTomas Winkler struct mei_cl_cb *cmpl_list); 211bca67d68STomas Winkler int mei_cl_read_start(struct mei_cl *cl, size_t length, struct file *fp); 212331e4187STomas Winkler int mei_cl_irq_read_msg(struct mei_cl *cl, struct mei_msg_hdr *hdr, 213331e4187STomas Winkler struct mei_cl_cb *cmpl_list); 2144234a6deSTomas Winkler int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking); 2159d098192STomas Winkler int mei_cl_irq_write(struct mei_cl *cl, struct mei_cl_cb *cb, 2169d098192STomas Winkler struct mei_cl_cb *cmpl_list); 21721767546STomas Winkler 218db086fa9STomas Winkler void mei_cl_complete(struct mei_cl *cl, struct mei_cl_cb *cb); 21990e0b5f1STomas Winkler 22090e0b5f1STomas Winkler void mei_host_client_init(struct work_struct *work); 22190e0b5f1STomas Winkler 22251678ccbSTomas Winkler u8 mei_cl_notify_fop2req(enum mei_cb_file_ops fop); 22351678ccbSTomas Winkler enum mei_cb_file_ops mei_cl_notify_req2fop(u8 request); 22451678ccbSTomas Winkler int mei_cl_notify_request(struct mei_cl *cl, struct file *file, u8 request); 22551678ccbSTomas Winkler int mei_cl_irq_notify(struct mei_cl *cl, struct mei_cl_cb *cb, 22651678ccbSTomas Winkler struct mei_cl_cb *cmpl_list); 227b38a362fSTomas Winkler int mei_cl_notify_get(struct mei_cl *cl, bool block, bool *notify_ev); 228237092bfSTomas Winkler void mei_cl_notify(struct mei_cl *cl); 22951678ccbSTomas Winkler 230074b4c01STomas Winkler void mei_cl_all_disconnect(struct mei_device *dev); 2315290801cSTomas Winkler void mei_cl_all_wakeup(struct mei_device *dev); 232074b4c01STomas Winkler void mei_cl_all_write_clear(struct mei_device *dev); 233074b4c01STomas Winkler 234c0abffbdSAlexander Usyskin #define MEI_CL_FMT "cl:host=%02d me=%02d " 235d49ed64aSAlexander Usyskin #define MEI_CL_PRM(cl) (cl)->host_client_id, mei_cl_me_id(cl) 236c0abffbdSAlexander Usyskin 237c0abffbdSAlexander Usyskin #define cl_dbg(dev, cl, format, arg...) \ 2382bf94cabSTomas Winkler dev_dbg((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg) 239c0abffbdSAlexander Usyskin 240c0abffbdSAlexander Usyskin #define cl_err(dev, cl, format, arg...) \ 2412bf94cabSTomas Winkler dev_err((dev)->dev, MEI_CL_FMT format, MEI_CL_PRM(cl), ##arg) 242c0abffbdSAlexander Usyskin 24390e0b5f1STomas Winkler #endif /* _MEI_CLIENT_H_ */ 244