10edb23fcSTomas Winkler /* 20edb23fcSTomas Winkler * 30edb23fcSTomas Winkler * Intel Management Engine Interface (Intel MEI) Linux driver 40edb23fcSTomas Winkler * Copyright (c) 2003-2012, Intel Corporation. 50edb23fcSTomas Winkler * 60edb23fcSTomas Winkler * This program is free software; you can redistribute it and/or modify it 70edb23fcSTomas Winkler * under the terms and conditions of the GNU General Public License, 80edb23fcSTomas Winkler * version 2, as published by the Free Software Foundation. 90edb23fcSTomas Winkler * 100edb23fcSTomas Winkler * This program is distributed in the hope it will be useful, but WITHOUT 110edb23fcSTomas Winkler * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 120edb23fcSTomas Winkler * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 130edb23fcSTomas Winkler * more details. 140edb23fcSTomas Winkler * 150edb23fcSTomas Winkler */ 160edb23fcSTomas Winkler 170edb23fcSTomas Winkler #ifndef _MEI_HBM_H_ 180edb23fcSTomas Winkler #define _MEI_HBM_H_ 190edb23fcSTomas Winkler 209b0d5efcSTomas Winkler struct mei_device; 219b0d5efcSTomas Winkler struct mei_msg_hdr; 229b0d5efcSTomas Winkler struct mei_cl; 239b0d5efcSTomas Winkler 249b0d5efcSTomas Winkler /** 259b0d5efcSTomas Winkler * enum mei_hbm_state - host bus message protocol state 269b0d5efcSTomas Winkler * 279b0d5efcSTomas Winkler * @MEI_HBM_IDLE : protocol not started 28cb02efc3SAlexander Usyskin * @MEI_HBM_STARTING : start request message was sent 29cb02efc3SAlexander Usyskin * @MEI_HBM_STARTED : start reply message was received 309b0d5efcSTomas Winkler * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent 319b0d5efcSTomas Winkler * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties 32cb02efc3SAlexander Usyskin * @MEI_HBM_STOPPED : stopping exchange 339b0d5efcSTomas Winkler */ 349b0d5efcSTomas Winkler enum mei_hbm_state { 359b0d5efcSTomas Winkler MEI_HBM_IDLE = 0, 36cb02efc3SAlexander Usyskin MEI_HBM_STARTING, 37544f9460STomas Winkler MEI_HBM_STARTED, 389b0d5efcSTomas Winkler MEI_HBM_ENUM_CLIENTS, 399b0d5efcSTomas Winkler MEI_HBM_CLIENT_PROPERTIES, 40544f9460STomas Winkler MEI_HBM_STOPPED, 419b0d5efcSTomas Winkler }; 429b0d5efcSTomas Winkler 43*1beeb4b9SAlexander Usyskin const char *mei_hbm_state_str(enum mei_hbm_state state); 44*1beeb4b9SAlexander Usyskin 45544f9460STomas Winkler int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr); 460edb23fcSTomas Winkler 470edb23fcSTomas Winkler static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length) 480edb23fcSTomas Winkler { 490edb23fcSTomas Winkler hdr->host_addr = 0; 500edb23fcSTomas Winkler hdr->me_addr = 0; 510edb23fcSTomas Winkler hdr->length = length; 520edb23fcSTomas Winkler hdr->msg_complete = 1; 530edb23fcSTomas Winkler hdr->reserved = 0; 540edb23fcSTomas Winkler } 550edb23fcSTomas Winkler 5666ae460bSTomas Winkler void mei_hbm_idle(struct mei_device *dev); 5784b3294aSTomas Winkler void mei_hbm_reset(struct mei_device *dev); 589b0d5efcSTomas Winkler int mei_hbm_start_req(struct mei_device *dev); 599b0d5efcSTomas Winkler int mei_hbm_start_wait(struct mei_device *dev); 600edb23fcSTomas Winkler int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl); 610edb23fcSTomas Winkler int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl); 626bb948c9STomas Winkler int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl); 630edb23fcSTomas Winkler int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl); 642c9b48acSTomas Winkler bool mei_hbm_version_is_supported(struct mei_device *dev); 654fcbc99bSTomas Winkler int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd); 660edb23fcSTomas Winkler 670edb23fcSTomas Winkler #endif /* _MEI_HBM_H_ */ 680edb23fcSTomas Winkler 69