freebsd-dev/sys/dev/isci/scil/scif_domain.h

/*-
 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
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 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * BSD LICENSE
 *
 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 * All rights reserved.
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 * modification, are permitted provided that the following conditions
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 */
#ifndef _SCIF_DOMAIN_H_
#define _SCIF_DOMAIN_H_

/**
 * @file
 *
 * @brief This file contains all of the interface methods that can be called
 *        by an SCI Framework user on the SAS/SATA domain object.
 */

#ifdef __cplusplus
extern "C" {
#endif // __cplusplus

#include <dev/isci/scil/sci_types.h>
#include <dev/isci/scil/sci_status.h>
#include <dev/isci/scil/intel_sas.h>


/**
 * @brief This method enables the framework user to find the SCI Core Port
 *        object through which the supplied domain is accessed.
 *
 * @param[in]  domain This parameter specifies the framework domain object
 *             for which to return the corresponding SCI Core port object.
 *
 * @return Return a handle to the SCI Core port through which the supplied
 *         domain is accessed.
 * @retval SCI_INVALID_HANDLE This value is returned if the core port
 *         object can not be retrieved.
 */
SCI_PORT_HANDLE_T scif_domain_get_scic_port_handle(
   SCI_DOMAIN_HANDLE_T  domain
);

/**
 * @brief This method will find and retrieve the device associated with the
 *        supplied SAS address if such a device exists.
 *
 * @param[in]  domain This parameter specifies the framework domain object
 *             on which to discover devices.
 * @param[in]  sas_address This parameter specifies the SAS address of the
 *             object to locate in this domain.
 *
 * @return Indicate if the device was successfully found in the domain.
 * @retval SCI_INVALID_HANDLE This value is returned if the device is not
 *         found in the domain.
 * @retval All other values indicate a valid remote device being found.
 */
SCI_REMOTE_DEVICE_HANDLE_T scif_domain_get_device_by_sas_address(
   SCI_DOMAIN_HANDLE_T   domain,
   SCI_SAS_ADDRESS_T   * sas_address
);

/**
 * @brief This method will attempt to discover the supplied domain.
 *
 * @warning This method must be synchronized with the controller completion
 *          handler (see scic_controller_get_handler_methods()).  The user
 *          may call this method from within the completion handler in which
 *          case, no synchronization is necessary.
 *
 * @note
 *        - IO requests from the OS driver are held off until discovery
 *          of the domain is complete.
 *        - Discovery may perform SSP or STP IO requests to configure
 *          remote devices prior to informing the SCIF User of their
 *          existence via the remote_device_ready user callback.
 *
 * @param[in]  domain This parameter specifies the framework domain object
 *             on which to discover devices.
 * @param[in]  discover_timeout This parameter specifies the number of
 *             milliseconds in which the domain discovery operation should
 *             complete.
 * @param[in]  device_timeout This parameter specifies the number of
 *             milliseconds in which the device configuration and/or reset
 *             operations should complete.  Logically, the device_timeout
 *             parameter should be shorter then the domain_timeout value.
 *             Especially considering the domain could be made up of "n"
 *             different devices.
 *
 * @return Indicate if the discover operation started successfully.
 * @retval SCI_SUCCESS This value is returned if the discover operation
 *         started successfully.
 * @retval SCI_WARNING_TIMER_CONFLICT This value is returned if the SCI
 *         implementation doesn't support the desired timeout amounts or if
 *         the desired timeout amounts conflict in some manner.
 */
SCI_STATUS scif_domain_discover(
   SCI_DOMAIN_HANDLE_T   domain,
   U32                   discover_timeout,
   U32                   device_timeout
);

#if !defined(DISABLE_SCI_ITERATORS)
/**
 * @brief This method gets an iterator for the list of remote devices in the
 *        specified domain.
 *
 * @param[in] domain: This parameter specifies the framework domain handle
 * @param[in] iterator_buffer: This parameters specifies the memory buffer that
 *            will be used to construct the iterator.
 *
 * @retval Handle to the remote device list iterator.
 */
SCI_ITERATOR_HANDLE_T scif_domain_get_remote_device_iterator(
   SCI_DOMAIN_HANDLE_T   domain,
   void                * iterator_buffer
);
#else // !defined(DISABLE_SCI_ITERATORS)
#define scif_domain_get_remote_device_iterator(the_domain, the_buffer) \
        SCI_INVALID_HANDLE
#endif // !defined(DISABLE_SCI_ITERATORS)

/**
 * @brief This method simply returns a suggest timeout value for discovery.
 *
 * @param[in] domain The handle to the domain whose discover activity is to
 *     be started.
 *
 * @return The suggested timeout value for domain discover in milli-seconds.
 */
U32 scif_domain_get_suggested_discover_timeout(
   SCI_DOMAIN_HANDLE_T   domain
);

#ifdef __cplusplus
}
#endif // __cplusplus

#endif // _SCIF_DOMAIN_H_