492 lines
13 KiB
C
492 lines
13 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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#ifndef _SCIC_SDS_PHY_H_
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#define _SCIC_SDS_PHY_H_
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/**
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* This file contains the structures, constants and prototypes for the
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* struct scic_sds_phy object.
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*
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*
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*/
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#include "intel_sata.h"
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#include "intel_sas.h"
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#include "sci_base_phy.h"
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#include "scu_registers.h"
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struct scic_sds_port;
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/**
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*
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*
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* This is the timeout value for the SATA phy to wait for a SIGNATURE FIS
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* before restarting the starting state machine. Technically, the old parallel
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* ATA specification required up to 30 seconds for a device to issue its
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* signature FIS as a result of a soft reset. Now we see that devices respond
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* generally within 15 seconds, but we'll use 25 for now.
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*/
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#define SCIC_SDS_SIGNATURE_FIS_TIMEOUT 25000
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/**
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*
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*
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* This is the timeout for the SATA OOB/SN because the hardware does not
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* recognize a hot plug after OOB signal but before the SN signals. We need to
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* make sure after a hotplug timeout if we have not received the speed event
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* notification from the hardware that we restart the hardware OOB state
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* machine.
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*/
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#define SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT 250
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/**
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* enum SCIC_SDS_PHY_STARTING_SUBSTATES -
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*
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*
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*/
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enum SCIC_SDS_PHY_STARTING_SUBSTATES {
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/**
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* Initial state
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_INITIAL,
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/**
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* Wait state for the hardware OSSP event type notification
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_OSSP_EN,
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/**
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* Wait state for the PHY speed notification
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN,
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/**
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* Wait state for the IAF Unsolicited frame notification
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF,
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/**
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* Wait state for the request to consume power
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER,
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/**
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* Wait state for request to consume power
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER,
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/**
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* Wait state for the SATA PHY notification
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN,
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/**
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* Wait for the SATA PHY speed notification
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN,
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/**
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* Wait state for the SIGNATURE FIS unsolicited frame notification
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF,
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/**
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* Exit state for this state machine
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*/
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SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL,
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/**
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* Maximum number of substates for the STARTING state machine
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*/
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SCIC_SDS_PHY_STARTING_MAX_SUBSTATES
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};
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struct scic_sds_port;
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struct scic_sds_controller;
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#ifdef SCIC_DEBUG_ENABLED
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#define MAX_STATE_TRANSITION_RECORD (256)
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/**
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*
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*
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* Debug code to record the state transitions for the phy object
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*/
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struct scic_sds_phy_state_record {
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struct sci_base_observer base_state_observer;
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struct sci_base_observer starting_state_observer;
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u16 index;
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u32 state_transition_table[MAX_STATE_TRANSITION_RECORD];
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};
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#endif /* SCIC_DEBUG_ENABLED */
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/**
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* This enumeration provides a named phy type for the state machine
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*
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*
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*/
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enum SCIC_SDS_PHY_PROTOCOL {
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/**
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* This is an unknown phy type since there is either nothing on the other
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* end or we have not detected the phy type as yet.
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*/
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SCIC_SDS_PHY_PROTOCOL_UNKNOWN,
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/**
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* This is a SAS PHY
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*/
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SCIC_SDS_PHY_PROTOCOL_SAS,
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/**
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* This is a SATA PHY
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*/
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SCIC_SDS_PHY_PROTOCOL_SATA,
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SCIC_SDS_MAX_PHY_PROTOCOLS
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};
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/**
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* struct scic_sds_phy - This structure contains or references all of the data
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* necessary to represent the core phy object and SCU harware protocol
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* engine.
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*
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*
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*/
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struct scic_sds_phy {
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struct sci_base_phy parent;
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/**
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* This field specifies the port object that owns/contains this phy.
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*/
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struct scic_sds_port *owning_port;
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/**
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* This field indicates whether the phy supports 1.5 Gb/s, 3.0 Gb/s,
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* or 6.0 Gb/s operation.
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*/
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enum sci_sas_link_rate max_negotiated_speed;
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/**
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* This member specifies the protocol being utilized on this phy. This
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* field contains a legitamite value once the PHY has link trained with
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* a remote phy.
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*/
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enum SCIC_SDS_PHY_PROTOCOL protocol;
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/**
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* This field specifies the index with which this phy is associated (0-3).
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*/
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u8 phy_index;
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/**
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* This member indicates if this particular PHY has received a BCN while
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* it had no port assignement. This BCN will be reported once the phy is
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* assigned to a port.
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*/
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bool bcn_received_while_port_unassigned;
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/**
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* This field indicates if this PHY is currently in the process of
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* link training (i.e. it has started OOB, but has yet to perform
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* IAF exchange/Signature FIS reception).
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*/
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bool is_in_link_training;
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union {
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struct {
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struct sci_sas_identify_address_frame identify_address_frame_buffer;
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} sas;
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struct {
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struct sata_fis_reg_d2h signature_fis_buffer;
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} sata;
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} phy_type;
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/**
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* This field contains a reference to the timer utilized in detecting
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* when a signature FIS timeout has occurred. The signature FIS is the
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* first FIS sent by an attached SATA device after OOB/SN.
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*/
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void *sata_timeout_timer;
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struct scic_sds_phy_state_handler *state_handlers;
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struct sci_base_state_machine starting_substate_machine;
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#ifdef SCIC_DEBUG_ENABLED
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struct scic_sds_phy_state_record state_record;
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#endif /* SCIC_DEBUG_ENABLED */
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/**
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* This field points to the link layer register set within the SCU.
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*/
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struct scu_link_layer_registers *link_layer_registers;
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};
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typedef enum sci_status (*SCIC_SDS_PHY_EVENT_HANDLER_T)(struct scic_sds_phy *, u32);
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typedef enum sci_status (*SCIC_SDS_PHY_FRAME_HANDLER_T)(struct scic_sds_phy *, u32);
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typedef enum sci_status (*SCIC_SDS_PHY_POWER_HANDLER_T)(struct scic_sds_phy *);
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/**
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* struct scic_sds_phy_state_handler -
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*
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*
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*/
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struct scic_sds_phy_state_handler {
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/**
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* This is the struct sci_base_phy object state handlers.
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*/
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struct sci_base_phy_state_handler parent;
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/**
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* The state handler for unsolicited frames received from the SCU hardware.
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*/
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SCIC_SDS_PHY_FRAME_HANDLER_T frame_handler;
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/**
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* The state handler for events received from the SCU hardware.
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*/
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SCIC_SDS_PHY_EVENT_HANDLER_T event_handler;
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/**
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* The state handler for staggered spinup.
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*/
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SCIC_SDS_PHY_POWER_HANDLER_T consume_power_handler;
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};
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extern struct scic_sds_phy_state_handler scic_sds_phy_state_handler_table[];
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extern const struct sci_base_state scic_sds_phy_state_table[];
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extern const struct sci_base_state scic_sds_phy_starting_substates[];
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extern struct scic_sds_phy_state_handler
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scic_sds_phy_starting_substate_handler_table[];
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/**
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* scic_sds_phy_get_index() -
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*
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* This macro returns the phy index for the specified phy
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*/
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#define scic_sds_phy_get_index(phy) \
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((phy)->phy_index)
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/**
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* scic_sds_phy_get_controller() - This macro returns the controller for this
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* phy
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*
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*
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*/
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#define scic_sds_phy_get_controller(phy) \
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(scic_sds_port_get_controller((phy)->owning_port))
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/**
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* scic_sds_phy_get_base_state_machine() - This macro returns the state machine
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* for the base phy
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*
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*
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*/
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#define scic_sds_phy_get_base_state_machine(phy) \
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(&(phy)->parent.state_machine)
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/**
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* scic_sds_phy_get_starting_substate_machine() - This macro returns the
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* starting substate machine for this phy
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*
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*
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*/
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#define scic_sds_phy_get_starting_substate_machine(phy) \
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(&(phy)->starting_substate_machine)
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/**
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* scic_sds_phy_set_state_handlers() - This macro sets the state handlers for
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* this phy object
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*
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*
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*/
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#define scic_sds_phy_set_state_handlers(phy, handlers) \
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((phy)->state_handlers = (handlers))
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/**
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* scic_sds_phy_set_base_state_handlers() -
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*
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* This macro set the base state handlers for the phy object.
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*/
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#define scic_sds_phy_set_base_state_handlers(phy, state_id) \
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scic_sds_phy_set_state_handlers(\
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(phy), \
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&scic_sds_phy_state_handler_table[(state_id)] \
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)
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/**
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* scic_sds_phy_is_ready() -
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*
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* This macro returns true if the current base state for this phy is
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* SCI_BASE_PHY_STATE_READY
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*/
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#define scic_sds_phy_is_ready(phy) \
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(\
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SCI_BASE_PHY_STATE_READY \
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== sci_base_state_machine_get_state(\
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scic_sds_phy_get_base_state_machine(phy) \
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) \
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)
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/* --------------------------------------------------------------------------- */
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/* --------------------------------------------------------------------------- */
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void scic_sds_phy_construct(
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struct scic_sds_phy *this_phy,
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struct scic_sds_port *owning_port,
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u8 phy_index);
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struct scic_sds_port *scic_sds_phy_get_port(
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struct scic_sds_phy *this_phy);
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void scic_sds_phy_set_port(
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struct scic_sds_phy *this_phy,
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struct scic_sds_port *owning_port);
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enum sci_status scic_sds_phy_initialize(
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struct scic_sds_phy *this_phy,
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struct scu_link_layer_registers *link_layer_registers);
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enum sci_status scic_sds_phy_start(
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struct scic_sds_phy *this_phy);
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enum sci_status scic_sds_phy_stop(
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struct scic_sds_phy *this_phy);
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enum sci_status scic_sds_phy_reset(
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struct scic_sds_phy *this_phy);
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/* --------------------------------------------------------------------------- */
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void scic_sds_phy_suspend(
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struct scic_sds_phy *this_phy);
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void scic_sds_phy_resume(
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struct scic_sds_phy *this_phy);
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/* --------------------------------------------------------------------------- */
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enum sci_status scic_sds_phy_event_handler(
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struct scic_sds_phy *this_phy,
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u32 event_code);
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enum sci_status scic_sds_phy_frame_handler(
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struct scic_sds_phy *this_phy,
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u32 frame_index);
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enum sci_status scic_sds_phy_consume_power_handler(
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struct scic_sds_phy *this_phy);
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void scic_sds_phy_get_sas_address(
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struct scic_sds_phy *this_phy,
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struct sci_sas_address *sas_address);
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void scic_sds_phy_get_attached_sas_address(
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struct scic_sds_phy *this_phy,
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struct sci_sas_address *sas_address);
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void scic_sds_phy_get_protocols(
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struct scic_sds_phy *this_phy,
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struct sci_sas_identify_address_frame_protocols *protocols);
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void scic_sds_phy_get_attached_phy_protocols(
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struct scic_sds_phy *this_phy,
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struct sci_sas_identify_address_frame_protocols *protocols);
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/*
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* ****************************************************************************-
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* * SCIC SDS PHY Handler Methods
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* ****************************************************************************- */
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enum sci_status scic_sds_phy_default_start_handler(
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struct sci_base_phy *phy);
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enum sci_status scic_sds_phy_default_stop_handler(
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struct sci_base_phy *phy);
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enum sci_status scic_sds_phy_default_reset_handler(
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struct sci_base_phy *phy);
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enum sci_status scic_sds_phy_default_destroy_handler(
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struct sci_base_phy *phy);
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enum sci_status scic_sds_phy_default_frame_handler(
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struct scic_sds_phy *phy,
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u32 frame_index);
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enum sci_status scic_sds_phy_default_event_handler(
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struct scic_sds_phy *phy,
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u32 evnet_code);
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enum sci_status scic_sds_phy_default_consume_power_handler(
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struct scic_sds_phy *phy);
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#endif /* _SCIC_SDS_PHY_H_ */
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