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e5cab1f974
The new capabilities command in HBM version 2.2 allows performing capabilities handshake between the firmware and the host driver. The driver requests a capability by setting the appropriate bit in 24bit wide bitmask and the fw responses with the bit set providing the requested capability is supported. Bump copyright year in affected files. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20200818115147.2567012-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2003-2018, Intel Corporation. All rights reserved.
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* Intel Management Engine Interface (Intel MEI) Linux driver
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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_CAP_SETUP : capabilities request message was sent
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* @MEI_HBM_DR_SETUP : dma ring setup request message was sent
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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_STARTED : enumeration was completed
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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_CAP_SETUP,
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MEI_HBM_DR_SETUP,
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MEI_HBM_ENUM_CLIENTS,
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MEI_HBM_CLIENT_PROPERTIES,
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MEI_HBM_STARTED,
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MEI_HBM_STOPPED,
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};
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const char *mei_hbm_state_str(enum mei_hbm_state state);
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int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);
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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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void mei_hbm_pg_resume(struct mei_device *dev);
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int mei_hbm_cl_notify_req(struct mei_device *dev,
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struct mei_cl *cl, u8 request);
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#endif /* _MEI_HBM_H_ */
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