24aadc809f
1. We record host (write) buffer depth during reset so we don't need to query HCSR register later on. The host buffer depth doesn't change after the reset 2. Use mei_hbuf_max_data function to compute payload size in bytes Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
81 lines
2.4 KiB
C
81 lines
2.4 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_INTERFACE_H_
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#define _MEI_INTERFACE_H_
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#include <linux/mei.h>
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#include "mei_dev.h"
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#define AMT_WD_DEFAULT_TIMEOUT 120 /* seconds */
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#define AMT_WD_MIN_TIMEOUT 120 /* seconds */
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#define AMT_WD_MAX_TIMEOUT 65535 /* seconds */
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#define MEI_WATCHDOG_DATA_SIZE 16
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#define MEI_START_WD_DATA_SIZE 20
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#define MEI_WD_PARAMS_SIZE 4
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void mei_read_slots(struct mei_device *dev,
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unsigned char *buffer,
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unsigned long buffer_length);
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int mei_write_message(struct mei_device *dev,
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struct mei_msg_hdr *header,
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unsigned char *write_buffer,
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unsigned long write_length);
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int mei_host_buffer_is_empty(struct mei_device *dev);
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int mei_count_full_read_slots(struct mei_device *dev);
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int mei_count_empty_write_slots(struct mei_device *dev);
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int mei_flow_ctrl_creds(struct mei_device *dev, struct mei_cl *cl);
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static inline size_t mei_hbuf_max_data(const struct mei_device *dev)
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{
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return dev->hbuf_depth * sizeof(u32) - sizeof(struct mei_msg_hdr);
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}
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int mei_wd_send(struct mei_device *dev);
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int mei_wd_stop(struct mei_device *dev, bool preserve);
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int mei_wd_host_init(struct mei_device *dev);
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/*
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* mei_watchdog_register - Registering watchdog interface
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* once we got connection to the WD Client
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* @dev - mei device
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*/
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void mei_watchdog_register(struct mei_device *dev);
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/*
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* mei_watchdog_unregister - Unregistering watchdog interface
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* @dev - mei device
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*/
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void mei_watchdog_unregister(struct mei_device *dev);
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int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl);
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int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl);
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int mei_disconnect(struct mei_device *dev, struct mei_cl *cl);
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int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl);
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int mei_connect(struct mei_device *dev, struct mei_cl *cl);
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#endif /* _MEI_INTERFACE_H_ */
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