1537078d8f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
338 lines
12 KiB
C
338 lines
12 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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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 version 2 of the GNU General Public License 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/**
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* @file
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*
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* @brief This file contains the implementation of the SCIF_SAS_SMP_PHY
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* object.
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*/
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#include <dev/isci/scil/scif_sas_controller.h>
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#include <dev/isci/scil/scif_sas_smp_phy.h>
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#include <dev/isci/scil/scif_sas_smp_remote_device.h>
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//******************************************************************************
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//*
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//* P U B L I C M E T H O D S
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//*
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//******************************************************************************
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/**
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* @brief This routine constructs a smp phy object for an expander phy and insert
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* to owning expander device's smp_phy_list.
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* @param[in] this_smp_phy The memory space to store a phy
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* @param[in] owning_device The smp remote device that owns this smp phy.
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* @param[in] expander_phy_id The expander phy id for this_smp_phy.
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* @return None
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*/
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void scif_sas_smp_phy_construct(
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SCIF_SAS_SMP_PHY_T * this_smp_phy,
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SCIF_SAS_REMOTE_DEVICE_T * owning_device,
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U8 expander_phy_id
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)
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{
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memset(this_smp_phy, 0, sizeof(SCIF_SAS_SMP_PHY_T));
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this_smp_phy->phy_identifier = expander_phy_id;
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this_smp_phy->owning_device = owning_device;
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sci_fast_list_element_init((this_smp_phy), (&this_smp_phy->list_element));
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//insert to owning device's smp phy list.
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sci_fast_list_insert_tail(
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(&owning_device->protocol_device.smp_device.smp_phy_list),
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(&this_smp_phy->list_element)
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);
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}
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/**
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* @brief This routine destructs a smp phy object for an expander phy and free the smp
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* phy to controller's smp phy memory.
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* @param[in] this_smp_phy The smp phy to be destructed.
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*
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* @return None
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*/
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void scif_sas_smp_phy_destruct(
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SCIF_SAS_SMP_PHY_T * this_smp_phy
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)
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{
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SCIF_SAS_REMOTE_DEVICE_T * owning_device = this_smp_phy->owning_device;
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SCIF_SAS_CONTROLLER_T * fw_controller = owning_device->domain->controller;
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if ( ( this_smp_phy->attached_device_type == SMP_EDGE_EXPANDER_DEVICE
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|| this_smp_phy->attached_device_type == SMP_FANOUT_EXPANDER_DEVICE)
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&& this_smp_phy->u.attached_phy != NULL )
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{
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//update the counterpart phy from the other smp phy list.
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this_smp_phy->u.attached_phy->attached_device_type = SMP_NO_DEVICE_ATTACHED;
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this_smp_phy->u.attached_phy->u.attached_phy = NULL;
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}
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//remove curr_smp_phy
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sci_fast_list_remove_element(&this_smp_phy->list_element);
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scif_sas_controller_free_smp_phy(fw_controller, this_smp_phy);
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}
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/**
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* @brief This routine save a smp phy information based on discover response.
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*
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* @param[in] this_smp_phy The memory space to store a phy
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* @param[in] attached_device A possible direct attached device to this phy.
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*
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* @param[in] discover_response The smp DISCOVER response for this_smp_phy.
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* @return None
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*/
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void scif_sas_smp_phy_save_information(
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SCIF_SAS_SMP_PHY_T * this_smp_phy,
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SCIF_SAS_REMOTE_DEVICE_T * attached_device,
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SMP_RESPONSE_DISCOVER_T * discover_response
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)
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{
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ASSERT (this_smp_phy->owning_device != NULL);
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ASSERT (this_smp_phy->phy_identifier == discover_response->phy_identifier);
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this_smp_phy->attached_device_type = (U8)discover_response->u2.sas1_1.attached_device_type;
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this_smp_phy->routing_attribute = (U8)discover_response->routing_attribute;
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this_smp_phy->attached_sas_address = discover_response->attached_sas_address;
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this_smp_phy->config_route_table_index_anchor = 0;
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if (this_smp_phy->attached_device_type != SMP_EDGE_EXPANDER_DEVICE
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&& this_smp_phy->attached_device_type != SMP_FANOUT_EXPANDER_DEVICE)
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{
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//note, end_device field could be an end device, or a NULL value, but can't be expander device.
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this_smp_phy->u.end_device = attached_device;
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}
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else
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{
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//if attached device type is expander, we will set u.attached_phy later when the
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//the attached expander finish its discover on attached_phy.
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;
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}
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}
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/**
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* @brief This routine constructs a smp phy object for an expander phy.
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* @param[in] this_smp_phy The memory space to store a phy
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* @param[in] owning_device The smp remote device that owns this smp phy.
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* @param[in] discover_response The smp DISCOVER response for this_smp_phy.
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*
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* @return Whether a smp phy has an attached phy and the pair of phy are set
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* set to each other as attached phy successfully.
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*/
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SCI_STATUS scif_sas_smp_phy_set_attached_phy(
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SCIF_SAS_SMP_PHY_T * this_smp_phy,
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U8 attached_phy_identifier,
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SCIF_SAS_REMOTE_DEVICE_T * attached_remote_device
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)
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{
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//find the attached phy from its owning device by attached_phy_id.
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SCIF_SAS_SMP_PHY_T * attached_smp_phy =
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(SCIF_SAS_SMP_PHY_T *)scif_sas_smp_remote_device_find_smp_phy_by_id(
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attached_phy_identifier,
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&attached_remote_device->protocol_device.smp_device);
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if (attached_smp_phy != NULL)
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{
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this_smp_phy->u.attached_phy = attached_smp_phy;
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attached_smp_phy->u.attached_phy = this_smp_phy;
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return SCI_SUCCESS;
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}
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return SCI_FAILURE;
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}
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/**
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* @brief This method verify the routing attributes of a phy connection per
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* specification.
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*
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* @param[in] this_smp_phy One smp phy belongs to a smp phy connection.
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* @param[in] attached_smp_phy One smp phy belongs to a smp phy connection.
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*
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* @return Whether routing attributes of a phy connection is legal.
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* @retval SCI_SUCCESS indicates a good phy connection.
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* SCI_FAILURE indicates a illegal phy connection.
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*/
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SCI_STATUS scif_sas_smp_phy_verify_routing_attribute(
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SCIF_SAS_SMP_PHY_T * this_smp_phy,
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SCIF_SAS_SMP_PHY_T * attached_smp_phy
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)
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{
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SCI_STATUS status = SCI_SUCCESS;
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//expander phy with direct routing attribute can only connect to
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//phy with direct routing attribute.
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if ( this_smp_phy->routing_attribute == DIRECT_ROUTING_ATTRIBUTE
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|| attached_smp_phy->routing_attribute == DIRECT_ROUTING_ATTRIBUTE )
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{
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if ( (this_smp_phy->routing_attribute | attached_smp_phy->routing_attribute)
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!= DIRECT_ROUTING_ATTRIBUTE )
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status = SCI_FAILURE;
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}
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if (this_smp_phy->routing_attribute == TABLE_ROUTING_ATTRIBUTE
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&& attached_smp_phy->routing_attribute == TABLE_ROUTING_ATTRIBUTE)
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{
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if ( ! this_smp_phy->owning_device->protocol_device.smp_device.is_table_to_table_supported
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|| !attached_smp_phy->owning_device->protocol_device.smp_device.is_table_to_table_supported )
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status = SCI_FAILURE;
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}
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return status;
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}
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/**
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* @brief This method find The next smp phy that is in the smp phy list and
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* resides in the same wide port as this_smp_phy.
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*
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* @param[in] this_smp_phy The smp phy whose neighbor phy that is in the same
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* same wide port is to be find.
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*
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* @return The next smp phy that is in the smp phy list and resides in the same
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* wide port as this_smp_phy.
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*/
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SCIF_SAS_SMP_PHY_T * scif_sas_smp_phy_find_next_phy_in_wide_port(
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SCIF_SAS_SMP_PHY_T * this_smp_phy
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)
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{
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SCI_FAST_LIST_ELEMENT_T * next_phy_element = sci_fast_list_get_next(
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&(this_smp_phy->list_element) );
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SCIF_SAS_SMP_PHY_T * next_phy;
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while (next_phy_element != NULL)
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{
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next_phy = (SCIF_SAS_SMP_PHY_T *)sci_fast_list_get_object(next_phy_element);
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next_phy_element = sci_fast_list_get_next( &(next_phy->list_element));
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if (next_phy->attached_sas_address.high == this_smp_phy->attached_sas_address.high
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&&next_phy->attached_sas_address.low == this_smp_phy->attached_sas_address.low)
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return next_phy;
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}
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return NULL;
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}
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/**
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* @brief This method find the smp phy that resides in the middle of the same
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* wide port as this_smp_phy.
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*
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* @param[in] this_smp_phy The smp phy who is the lowest order phy in a wide
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* port .
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*
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* @return The next smp phy that is in the smp phy list and resides in the same
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* wide port as this_smp_phy.
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*/
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SCIF_SAS_SMP_PHY_T * scif_sas_smp_phy_find_middle_phy_in_wide_port(
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SCIF_SAS_SMP_PHY_T * this_smp_phy
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)
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{
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SCIF_SAS_SMP_PHY_T * next_phy =
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scif_sas_smp_phy_find_next_phy_in_wide_port(this_smp_phy);
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SCIF_SAS_SMP_PHY_T * middle_phy = this_smp_phy;
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//currently we assume a wide port could not be wider than X4. so the
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//second phy is always the correct answer for x2, x3 or x4 wide port.
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//For a narrow port, phy0 is the middle phy.
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if (next_phy != NULL)
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{
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middle_phy = next_phy;
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next_phy =
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scif_sas_smp_phy_find_next_phy_in_wide_port(next_phy);
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}
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if (next_phy != NULL)
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middle_phy = next_phy;
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return middle_phy;
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}
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/**
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* @brief This method find the smp phy that is the hishest order phy
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* in the same wide port as this_smp_phy.
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*
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* @param[in] this_smp_phy The smp phy who is the lowest order phy in a wide
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* port.
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*
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* @return The next smp phy that is in the smp phy list and resides in the same
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* wide port as this_smp_phy.
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*/
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SCIF_SAS_SMP_PHY_T * scif_sas_smp_phy_find_highest_phy_in_wide_port(
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SCIF_SAS_SMP_PHY_T * this_smp_phy
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)
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{
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SCIF_SAS_SMP_PHY_T * next_phy =
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scif_sas_smp_phy_find_next_phy_in_wide_port(this_smp_phy);
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SCIF_SAS_SMP_PHY_T * highest_phy = this_smp_phy;
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while(next_phy != NULL )
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{
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highest_phy = next_phy;
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next_phy =
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scif_sas_smp_phy_find_next_phy_in_wide_port(next_phy);
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}
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return highest_phy;
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}
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