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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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cb02efc3a6
We cannot handle user interrupt in context of hbm start so we only wait for time out which is reasonably short. 1. Add kdoc 2. Rename state to better reflect its function 3. Simplify wait condition and rename wait_recvd_msg to wait_hbm_start Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
/*
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*
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* Intel Management Engine Interface (Intel MEI) Linux driver
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* Copyright (c) 2003-2012, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#ifndef _MEI_HBM_H_
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#define _MEI_HBM_H_
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struct mei_device;
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struct mei_msg_hdr;
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struct mei_cl;
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/**
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* enum mei_hbm_state - host bus message protocol state
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*
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* @MEI_HBM_IDLE : protocol not started
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* @MEI_HBM_STARTING : start request message was sent
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* @MEI_HBM_STARTED : start reply message was received
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* @MEI_HBM_ENUM_CLIENTS : enumeration request was sent
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* @MEI_HBM_CLIENT_PROPERTIES : acquiring clients properties
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* @MEI_HBM_STOPPED : stopping exchange
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*/
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enum mei_hbm_state {
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MEI_HBM_IDLE = 0,
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MEI_HBM_STARTING,
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MEI_HBM_STARTED,
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MEI_HBM_ENUM_CLIENTS,
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MEI_HBM_CLIENT_PROPERTIES,
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MEI_HBM_STOPPED,
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};
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int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);
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static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length)
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{
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hdr->host_addr = 0;
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hdr->me_addr = 0;
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hdr->length = length;
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hdr->msg_complete = 1;
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hdr->reserved = 0;
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}
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void mei_hbm_idle(struct mei_device *dev);
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void mei_hbm_reset(struct mei_device *dev);
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int mei_hbm_start_req(struct mei_device *dev);
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int mei_hbm_start_wait(struct mei_device *dev);
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int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl);
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int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl);
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int mei_hbm_cl_disconnect_rsp(struct mei_device *dev, struct mei_cl *cl);
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int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl);
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bool mei_hbm_version_is_supported(struct mei_device *dev);
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int mei_hbm_pg(struct mei_device *dev, u8 pg_cmd);
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#endif /* _MEI_HBM_H_ */
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