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The COSM driver allows boot, shutdown and reset of Intel MIC devices via sysfs. This functionality was previously present in the Intel MIC host driver but has now been taken out into a separate driver so that it can be shared between multiple generations of Intel MIC products. The sysfs kernel ABI used by the COSM driver is the same as that defined originally for the MIC host driver in Documentation/ABI/testing/sysfs-class-mic.txt. The COSM driver also contains support for dumping the MIC card log_buf and doing a "force reset" for the card via debugfs. The OSPM support present in the MIC host driver has now largely been moved to user space and only a small required OSPM functionality is now present in the driver. Reviewed-by: Nikhil Rao <nikhil.rao@intel.com> Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
70 lines
2 KiB
C
70 lines
2 KiB
C
/*
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* Intel MIC Platform Software Stack (MPSS)
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*
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* Copyright(c) 2015 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Intel MIC Coprocessor State Management (COSM) Driver
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*
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*/
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#ifndef _COSM_COSM_H_
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#define _COSM_COSM_H_
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#include <linux/scif.h>
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#include "../bus/cosm_bus.h"
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#define COSM_HEARTBEAT_SEND_SEC 30
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#define SCIF_COSM_LISTEN_PORT 201
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/**
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* enum COSM msg id's
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* @COSM_MSG_SHUTDOWN: host->card trigger shutdown
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* @COSM_MSG_SYNC_TIME: host->card send host time to card to sync time
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* @COSM_MSG_HEARTBEAT: card->host heartbeat
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* @COSM_MSG_SHUTDOWN_STATUS: card->host with shutdown status as payload
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*/
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enum cosm_msg_id {
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COSM_MSG_SHUTDOWN,
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COSM_MSG_SYNC_TIME,
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COSM_MSG_HEARTBEAT,
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COSM_MSG_SHUTDOWN_STATUS,
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};
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struct cosm_msg {
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u64 id;
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union {
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u64 shutdown_status;
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struct timespec64 timespec;
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};
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};
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extern const char * const cosm_state_string[];
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extern const char * const cosm_shutdown_status_string[];
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void cosm_sysfs_init(struct cosm_device *cdev);
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int cosm_start(struct cosm_device *cdev);
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void cosm_stop(struct cosm_device *cdev, bool force);
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int cosm_reset(struct cosm_device *cdev);
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int cosm_shutdown(struct cosm_device *cdev);
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void cosm_set_state(struct cosm_device *cdev, u8 state);
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void cosm_set_shutdown_status(struct cosm_device *cdev, u8 status);
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void cosm_init_debugfs(void);
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void cosm_exit_debugfs(void);
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void cosm_create_debug_dir(struct cosm_device *cdev);
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void cosm_delete_debug_dir(struct cosm_device *cdev);
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int cosm_scif_init(void);
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void cosm_scif_exit(void);
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void cosm_scif_work(struct work_struct *work);
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#endif
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