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8acaec1593
The midlayer is already throttling i/o in the places where host_quiesce was trying to prevent further i/o to the device. It's also problematic in that it holds a lock over GFP_KERNEL allocations. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
153 lines
4.5 KiB
C
153 lines
4.5 KiB
C
/*
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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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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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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/**
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* This file contains the isci_port object definition.
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*
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* port.h
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*/
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#if !defined(_ISCI_PORT_H_)
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#define _ISCI_PORT_H_
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struct isci_phy;
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struct isci_host;
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enum isci_status {
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isci_freed = 0x00,
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isci_starting = 0x01,
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isci_ready = 0x02,
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isci_ready_for_io = 0x03,
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isci_stopping = 0x04,
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isci_stopped = 0x05,
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};
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/**
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* struct isci_port - This class represents the port object used to internally
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* represent libsas port objects. It also keeps a list of remote device
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* objects.
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*
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*
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*/
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struct isci_port {
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struct scic_sds_port *sci_port_handle;
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enum isci_status status;
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struct isci_host *isci_host;
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struct asd_sas_port sas_port;
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struct list_head remote_dev_list;
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spinlock_t remote_device_lock;
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spinlock_t state_lock;
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struct list_head domain_dev_list;
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struct completion start_complete;
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struct completion hard_reset_complete;
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enum sci_status hard_reset_status;
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};
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#define to_isci_port(p) \
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container_of(p, struct isci_port, sas_port);
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enum isci_status isci_port_get_state(
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struct isci_port *isci_port);
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void isci_port_formed(
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struct asd_sas_phy *);
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void isci_port_deformed(
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struct asd_sas_phy *);
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void isci_port_bc_change_received(
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struct isci_host *isci_host,
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struct scic_sds_port *port,
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struct scic_sds_phy *phy);
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void isci_port_link_up(
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struct isci_host *isci_host,
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struct scic_sds_port *port,
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struct scic_sds_phy *phy);
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void isci_port_link_down(
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struct isci_host *isci_host,
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struct isci_phy *isci_phy,
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struct isci_port *port);
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void isci_port_ready(
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struct isci_host *isci_host,
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struct isci_port *isci_port);
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void isci_port_not_ready(
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struct isci_host *isci_host,
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struct isci_port *port);
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void isci_port_init(
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struct isci_port *port,
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struct isci_host *host,
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int index);
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void isci_port_hard_reset_complete(
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struct isci_port *isci_port,
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enum sci_status completion_status);
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int isci_port_perform_hard_reset(
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struct isci_port *isci_port_ptr,
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struct isci_phy *isci_phy_ptr);
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#endif /* !defined(_ISCI_PORT_H_) */
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