1*9fff0425STomas Winkler /* SPDX-License-Identifier: GPL-2.0 */ 20edb23fcSTomas Winkler /* 30edb23fcSTomas Winkler * Intel Management Engine Interface (Intel MEI) Linux driver 40edb23fcSTomas Winkler * Copyright (c) 2003-2012, Intel Corporation. 50edb23fcSTomas Winkler */ 60edb23fcSTomas Winkler 70edb23fcSTomas Winkler #ifndef _MEI_HBM_H_ 80edb23fcSTomas Winkler #define _MEI_HBM_H_ 90edb23fcSTomas Winkler 109b0d5efcSTomas Winkler struct mei_device; 119b0d5efcSTomas Winkler struct mei_msg_hdr; 129b0d5efcSTomas Winkler struct mei_cl; 139b0d5efcSTomas Winkler 149b0d5efcSTomas Winkler /** 159b0d5efcSTomas Winkler * enum mei_hbm_state - host bus message protocol state 169b0d5efcSTomas Winkler * 179b0d5efcSTomas Winkler * @MEI_HBM_IDLE : protocol not started 18cb02efc3SAlexander Usyskin * @MEI_HBM_STARTING : start request message was sent 19c55bf542STomas Winkler * @MEI_HBM_DR_SETUP : dma ring setup request message was sent 209b0d5efcSTomas Winkler * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent 219b0d5efcSTomas Winkler * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties 225ebdc364STomas Winkler * @MEI_HBM_STARTED : enumeration was completed 23cb02efc3SAlexander Usyskin * @MEI_HBM_STOPPED : stopping exchange 249b0d5efcSTomas Winkler */ 259b0d5efcSTomas Winkler enum mei_hbm_state { 269b0d5efcSTomas Winkler MEI_HBM_IDLE = 0, 27cb02efc3SAlexander Usyskin MEI_HBM_STARTING, 28c55bf542STomas Winkler MEI_HBM_DR_SETUP, 299b0d5efcSTomas Winkler MEI_HBM_ENUM_CLIENTS, 309b0d5efcSTomas Winkler MEI_HBM_CLIENT_PROPERTIES, 315ebdc364STomas Winkler MEI_HBM_STARTED, 32544f9460STomas Winkler MEI_HBM_STOPPED, 339b0d5efcSTomas Winkler }; 349b0d5efcSTomas Winkler 351beeb4b9SAlexander Usyskin const char *mei_hbm_state_str(enum mei_hbm_state state); 361beeb4b9SAlexander Usyskin 37544f9460STomas Winkler int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr); 380edb23fcSTomas Winkler 3966ae460bSTomas Winkler void mei_hbm_idle(struct mei_device *dev); 4084b3294aSTomas Winkler void mei_hbm_reset(struct mei_device *dev); 419b0d5efcSTomas Winkler int mei_hbm_start_req(struct mei_device *dev); 429b0d5efcSTomas Winkler int mei_hbm_start_wait(struct mei_device *dev); 430edb23fcSTomas Winkler int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl); 440edb23fcSTomas Winkler int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl); 456bb948c9STomas Winkler int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl); 460edb23fcSTomas Winkler int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl); 472c9b48acSTomas Winkler bool mei_hbm_version_is_supported(struct mei_device *dev); 484fcbc99bSTomas Winkler int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd); 49859ef2ffSAlexander Usyskin void mei_hbm_pg_resume(struct mei_device *dev); 50965ae37aSTomas Winkler int mei_hbm_cl_notify_req(struct mei_device *dev, 51965ae37aSTomas Winkler struct mei_cl *cl, u8 request); 520edb23fcSTomas Winkler 530edb23fcSTomas Winkler #endif /* _MEI_HBM_H_ */ 540edb23fcSTomas Winkler 55