/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2003-2018, Intel Corporation. All rights reserved. * Intel Management Engine Interface (Intel MEI) Linux driver */ #ifndef _MEI_HBM_H_ #define _MEI_HBM_H_ struct mei_device; struct mei_msg_hdr; struct mei_cl; /** * enum mei_hbm_state - host bus message protocol state * * @MEI_HBM_IDLE : protocol not started * @MEI_HBM_STARTING : start request message was sent * @MEI_HBM_DR_SETUP : dma ring setup request message was sent * @MEI_HBM_ENUM_CLIENTS : enumeration request was sent * @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties * @MEI_HBM_STARTED : enumeration was completed * @MEI_HBM_STOPPED : stopping exchange */ enum mei_hbm_state { MEI_HBM_IDLE = 0, MEI_HBM_STARTING, MEI_HBM_DR_SETUP, MEI_HBM_ENUM_CLIENTS, MEI_HBM_CLIENT_PROPERTIES, MEI_HBM_STARTED, MEI_HBM_STOPPED, }; const char *mei_hbm_state_str(enum mei_hbm_state state); int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr); void mei_hbm_idle(struct mei_device *dev); void mei_hbm_reset(struct mei_device *dev); int mei_hbm_start_req(struct mei_device *dev); int mei_hbm_start_wait(struct mei_device *dev); int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl); int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl); int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl); int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl); bool mei_hbm_version_is_supported(struct mei_device *dev); int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd); void mei_hbm_pg_resume(struct mei_device *dev); int mei_hbm_cl_notify_req(struct mei_device *dev, struct mei_cl *cl, u8 request); #endif /* _MEI_HBM_H_ */