703 lines
21 KiB
C
703 lines
21 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_CONTROLLER_H_
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#define _SCIC_SDS_CONTROLLER_H_
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#include <linux/string.h>
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/**
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* This file contains the structures, constants and prototypes used for the
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* core controller object.
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*
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*
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*/
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#include "sci_pool.h"
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#include "sci_controller_constants.h"
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#include "sci_memory_descriptor_list.h"
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#include "sci_base_controller.h"
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#include "scic_config_parameters.h"
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#include "scic_sds_port.h"
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#include "scic_sds_phy.h"
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#include "scic_sds_remote_node_table.h"
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#include "scu_registers.h"
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#include "scu_constants.h"
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#include "scu_remote_node_context.h"
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#include "scu_task_context.h"
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#include "scu_unsolicited_frame.h"
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#include "scic_sds_unsolicited_frame_control.h"
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#include "scic_sds_port_configuration_agent.h"
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#include "scic_sds_pci.h"
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struct scic_sds_remote_device;
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struct scic_sds_request;
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struct scic_sds_controller;
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#define SCU_COMPLETION_RAM_ALIGNMENT (64)
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/**
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* enum SCIC_SDS_CONTROLLER_MEMORY_DESCRIPTORS -
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*
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* This enumeration depects the types of MDEs that are going to be created for
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* the controller object.
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*/
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enum SCIC_SDS_CONTROLLER_MEMORY_DESCRIPTORS {
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/**
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* Completion queue MDE entry
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*/
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SCU_MDE_COMPLETION_QUEUE,
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/**
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* Remote node context MDE entry
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*/
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SCU_MDE_REMOTE_NODE_CONTEXT,
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/**
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* Task context MDE entry
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*/
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SCU_MDE_TASK_CONTEXT,
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/**
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* Unsolicited frame buffer MDE entrys this is the start of the unsolicited
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* frame buffer entries.
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*/
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SCU_MDE_UF_BUFFER,
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SCU_MAX_MDES
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};
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/**
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* struct scic_power_control -
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*
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* This structure defines the fields for managing power control for direct
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* attached disk devices.
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*/
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struct scic_power_control {
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/**
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* This field is set when the power control timer is running and cleared when
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* it is not.
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*/
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bool timer_started;
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/**
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* This field is the handle to the driver timer object. This timer is used to
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* control when the directed attached disks can consume power.
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*/
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void *timer;
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/**
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* This field is used to keep track of how many phys are put into the
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* requesters field.
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*/
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u8 phys_waiting;
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/**
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* This field is used to keep track of how many phys have been granted to consume power
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*/
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u8 phys_granted_power;
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/**
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* This field is an array of phys that we are waiting on. The phys are direct
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* mapped into requesters via struct scic_sds_phy.phy_index
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*/
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struct scic_sds_phy *requesters[SCI_MAX_PHYS];
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};
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/**
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* struct scic_sds_controller -
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*
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* This structure represents the SCU contoller object.
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*/
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struct scic_sds_controller {
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/**
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* The struct sci_base_controller is the parent object for the struct scic_sds_controller
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* object.
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*/
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struct sci_base_controller parent;
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/**
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* This field is the driver timer object handler used to time the controller
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* object start and stop requests.
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*/
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void *timeout_timer;
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/**
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* This field contains the user parameters to be utilized for this
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* core controller object.
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*/
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union scic_user_parameters user_parameters;
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/**
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* This field contains the OEM parameters to be utilized for this
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* core controller object.
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*/
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union scic_oem_parameters oem_parameters;
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/**
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* This field contains the port configuration agent for this controller.
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*/
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struct scic_sds_port_configuration_agent port_agent;
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/**
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* This field is the array of port objects that are controlled by this
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* controller object. There is one dummy port object also contained within
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* this controller object.
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*/
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struct scic_sds_port port_table[SCI_MAX_PORTS + 1];
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/**
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* This field is the array of phy objects that are controlled by this
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* controller object.
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*/
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struct scic_sds_phy phy_table[SCI_MAX_PHYS];
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/**
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* This field is the array of device objects that are currently constructed
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* for this controller object. This table is used as a fast lookup of device
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* objects that need to handle device completion notifications from the
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* hardware. The table is RNi based.
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*/
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struct scic_sds_remote_device *device_table[SCI_MAX_REMOTE_DEVICES];
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/**
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* This field is the array of IO request objects that are currently active for
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* this controller object. This table is used as a fast lookup of the io
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* request object that need to handle completion queue notifications. The
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* table is TCi based.
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*/
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struct scic_sds_request *io_request_table[SCI_MAX_IO_REQUESTS];
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/**
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* This field is the free RNi data structure
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*/
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struct scic_remote_node_table available_remote_nodes;
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/**
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* This field is the TCi pool used to manage the task context index.
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*/
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SCI_POOL_CREATE(tci_pool, u16, SCI_MAX_IO_REQUESTS);
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/**
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* This filed is the struct scic_power_control data used to controll when direct
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* attached devices can consume power.
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*/
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struct scic_power_control power_control;
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/**
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* This field is the array of sequence values for the IO Tag fields. Even
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* though only 4 bits of the field is used for the sequence the sequence is 16
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* bits in size so the sequence can be bitwise or'd with the TCi to build the
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* IO Tag value.
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*/
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u16 io_request_sequence[SCI_MAX_IO_REQUESTS];
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/**
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* This field in the array of sequence values for the RNi. These are used
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* to control io request build to io request start operations. The sequence
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* value is recorded into an io request when it is built and is checked on
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* the io request start operation to make sure that there was not a device
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* hot plug between the build and start operation.
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*/
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u8 remote_device_sequence[SCI_MAX_REMOTE_DEVICES];
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/**
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* This field is a pointer to the memory allocated by the driver for the task
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* context table. This data is shared between the hardware and software.
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*/
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struct scu_task_context *task_context_table;
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/**
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* This field is a pointer to the memory allocated by the driver for the
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* remote node context table. This table is shared between the hardware and
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* software.
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*/
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union scu_remote_node_context *remote_node_context_table;
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/**
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* This field is the array of physical memory requiremets for this controller
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* object.
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*/
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struct sci_physical_memory_descriptor memory_descriptors[SCU_MAX_MDES];
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/**
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* This field is a pointer to the completion queue. This memory is
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* written to by the hardware and read by the software.
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*/
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u32 *completion_queue;
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/**
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* This field is the software copy of the completion queue get pointer. The
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* controller object writes this value to the hardware after processing the
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* completion entries.
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*/
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u32 completion_queue_get;
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/**
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* This field is the minimum of the number of hardware supported port entries
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* and the software requested port entries.
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*/
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u32 logical_port_entries;
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/**
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* This field is the minimum number of hardware supported completion queue
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* entries and the software requested completion queue entries.
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*/
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u32 completion_queue_entries;
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/**
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* This field is the minimum number of hardware supported event entries and
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* the software requested event entries.
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*/
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u32 completion_event_entries;
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/**
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* This field is the minimum number of devices supported by the hardware and
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* the number of devices requested by the software.
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*/
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u32 remote_node_entries;
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/**
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* This field is the minimum number of IO requests supported by the hardware
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* and the number of IO requests requested by the software.
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*/
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u32 task_context_entries;
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/**
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* This object contains all of the unsolicited frame specific
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* data utilized by the core controller.
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*/
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struct scic_sds_unsolicited_frame_control uf_control;
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/* Phy Startup Data */
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/**
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* This field is the driver timer handle for controller phy request startup.
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* On controller start the controller will start each PHY individually in
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* order of phy index.
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*/
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void *phy_startup_timer;
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/**
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* This field is set when the phy_startup_timer is running and is cleared when
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* the phy_startup_timer is stopped.
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*/
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bool phy_startup_timer_pending;
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/**
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* This field is the index of the next phy start. It is initialized to 0 and
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* increments for each phy index that is started.
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*/
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u32 next_phy_to_start;
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/**
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* This field controlls the invalid link up notifications to the SCI_USER. If
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* an invalid_link_up notification is reported a bit for the PHY index is set
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* so further notifications are not made. Once the PHY object reports link up
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* and is made part of a port then this bit for the PHY index is cleared.
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*/
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u8 invalid_phy_mask;
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/*
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* This field saves the current interrupt coalescing number of the controller.
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*/
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u16 interrupt_coalesce_number;
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/*
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* This field saves the current interrupt coalescing timeout value in microseconds.
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*/
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u32 interrupt_coalesce_timeout;
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/**
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* This field is a pointer to the memory mapped register space for the
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* struct smu_registers.
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*/
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struct smu_registers __iomem *smu_registers;
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/**
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* This field is a pointer to the memory mapped register space for the
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* struct scu_registers.
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*/
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struct scu_registers __iomem *scu_registers;
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};
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typedef void (*scic_sds_controller_phy_handler_t)(struct scic_sds_controller *,
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struct scic_sds_port *,
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struct scic_sds_phy *);
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typedef void (*scic_sds_controller_device_handler_t)(struct scic_sds_controller *,
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struct scic_sds_remote_device *);
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/**
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* struct scic_sds_controller_state_handler -
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*
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* This structure contains the SDS core specific definition for the state
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* handlers.
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*/
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struct scic_sds_controller_state_handler {
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struct sci_base_controller_state_handler base;
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sci_base_controller_request_handler_t terminate_request;
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scic_sds_controller_phy_handler_t link_up;
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scic_sds_controller_phy_handler_t link_down;
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scic_sds_controller_device_handler_t remote_device_started_handler;
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scic_sds_controller_device_handler_t remote_device_stopped_handler;
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};
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extern const struct scic_sds_controller_state_handler
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scic_sds_controller_state_handler_table[];
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extern const struct sci_base_state scic_sds_controller_state_table[];
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/**
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* INCREMENT_QUEUE_GET() -
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*
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* This macro will increment the specified index to and if the index wraps to 0
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* it will toggel the cycle bit.
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*/
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#define INCREMENT_QUEUE_GET(index, cycle, entry_count, bit_toggle) \
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{ \
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if ((index) + 1 == entry_count) { \
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(index) = 0; \
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(cycle) = (cycle) ^ (bit_toggle); \
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} else { \
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index = index + 1; \
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} \
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}
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/**
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* scic_sds_controller_get_base_state_machine() -
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*
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* This is a helper macro that gets the base state machine for the controller
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* object
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*/
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#define scic_sds_controller_get_base_state_machine(this_controller) \
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(&(this_controller)->parent.state_machine)
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/**
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* scic_sds_controller_get_port_configuration_agent() -
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*
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* This is a helper macro to get the port configuration agent from the
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* controller object.
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*/
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#define scic_sds_controller_get_port_configuration_agent(controller) \
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(&(controller)->port_agent)
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/**
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* smu_register_write() -
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*
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* This macro writes to the smu_register for this controller
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*/
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#define smu_register_write(controller, reg, value) \
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scic_sds_pci_write_smu_dword((controller), &(reg), (value))
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/**
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* smu_register_read() -
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*
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* This macro reads the smu_register for this controller
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*/
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#define smu_register_read(controller, reg) \
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scic_sds_pci_read_smu_dword((controller), &(reg))
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/**
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* scu_register_write() -
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*
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* This mcaro writes the scu_register for this controller
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*/
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#define scu_register_write(controller, reg, value) \
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scic_sds_pci_write_scu_dword((controller), &(reg), (value))
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/**
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* scu_register_read() -
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*
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* This macro reads the scu_register for this controller
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*/
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#define scu_register_read(controller, reg) \
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scic_sds_pci_read_scu_dword((controller), &(reg))
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/**
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* scic_sds_controller_get_protocol_engine_group() -
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*
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* This macro returns the protocol engine group for this controller object.
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* Presently we only support protocol engine group 0 so just return that
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*/
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#define scic_sds_controller_get_protocol_engine_group(controller) 0
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/**
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* scic_sds_io_tag_construct() -
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*
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* This macro constructs an IO tag from the sequence and index values.
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*/
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#define scic_sds_io_tag_construct(sequence, task_index) \
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((sequence) << 12 | (task_index))
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/**
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* scic_sds_io_tag_get_sequence() -
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*
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* This macro returns the IO sequence from the IO tag value.
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*/
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#define scic_sds_io_tag_get_sequence(io_tag) \
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(((io_tag) & 0xF000) >> 12)
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/**
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* scic_sds_io_tag_get_index() -
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*
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* This macro returns the TCi from the io tag value
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*/
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#define scic_sds_io_tag_get_index(io_tag) \
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((io_tag) & 0x0FFF)
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/**
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* scic_sds_io_sequence_increment() -
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*
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* This is a helper macro to increment the io sequence count. We may find in
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* the future that it will be faster to store the sequence count in such a way
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* as we dont perform the shift operation to build io tag values so therefore
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* need a way to incrment them correctly
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*/
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#define scic_sds_io_sequence_increment(value) \
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((value) = (((value) + 1) & 0x000F))
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#define scic_sds_remote_device_node_count(device) \
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(\
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(\
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(device)->target_protocols.u.bits.attached_stp_target \
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&& ((device)->is_direct_attached != true) \
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) \
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? SCU_STP_REMOTE_NODE_COUNT : SCU_SSP_REMOTE_NODE_COUNT \
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)
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/**
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* scic_sds_controller_set_invalid_phy() -
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*
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* This macro will set the bit in the invalid phy mask for this controller
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* object. This is used to control messages reported for invalid link up
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* notifications.
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*/
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#define scic_sds_controller_set_invalid_phy(controller, phy) \
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((controller)->invalid_phy_mask |= (1 << (phy)->phy_index))
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/**
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* scic_sds_controller_clear_invalid_phy() -
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|
*
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* This macro will clear the bit in the invalid phy mask for this controller
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|
* object. This is used to control messages reported for invalid link up
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|
* notifications.
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|
*/
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#define scic_sds_controller_clear_invalid_phy(controller, phy) \
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((controller)->invalid_phy_mask &= ~(1 << (phy)->phy_index))
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/* --------------------------------------------------------------------------- */
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|
|
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u32 scic_sds_controller_get_object_size(void);
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|
|
|
/* --------------------------------------------------------------------------- */
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|
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void scic_sds_controller_post_request(
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struct scic_sds_controller *this_controller,
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|
u32 request);
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|
|
|
/* --------------------------------------------------------------------------- */
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|
|
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void scic_sds_controller_release_frame(
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|
struct scic_sds_controller *this_controller,
|
|
u32 frame_index);
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|
|
|
void scic_sds_controller_copy_sata_response(
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|
void *response_buffer,
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|
void *frame_header,
|
|
void *frame_buffer);
|
|
|
|
/* --------------------------------------------------------------------------- */
|
|
|
|
enum sci_status scic_sds_controller_allocate_remote_node_context(
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|
struct scic_sds_controller *this_controller,
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|
struct scic_sds_remote_device *the_device,
|
|
u16 *node_id);
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|
|
|
void scic_sds_controller_free_remote_node_context(
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|
struct scic_sds_controller *this_controller,
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|
struct scic_sds_remote_device *the_device,
|
|
u16 node_id);
|
|
|
|
union scu_remote_node_context *scic_sds_controller_get_remote_node_context_buffer(
|
|
struct scic_sds_controller *this_controller,
|
|
u16 node_id);
|
|
|
|
/* --------------------------------------------------------------------------- */
|
|
|
|
struct scic_sds_request *scic_sds_controller_get_io_request_from_tag(
|
|
struct scic_sds_controller *this_controller,
|
|
u16 io_tag);
|
|
|
|
|
|
struct scu_task_context *scic_sds_controller_get_task_context_buffer(
|
|
struct scic_sds_controller *this_controller,
|
|
u16 io_tag);
|
|
|
|
/*
|
|
* *****************************************************************************
|
|
* * CORE CONTROLLER POWER CONTROL METHODS
|
|
* ***************************************************************************** */
|
|
|
|
|
|
void scic_sds_controller_power_control_queue_insert(
|
|
struct scic_sds_controller *this_controller,
|
|
struct scic_sds_phy *the_phy);
|
|
|
|
void scic_sds_controller_power_control_queue_remove(
|
|
struct scic_sds_controller *this_controller,
|
|
struct scic_sds_phy *the_phy);
|
|
|
|
/*
|
|
* *****************************************************************************
|
|
* * CORE CONTROLLER PHY MESSAGE PROCESSING
|
|
* ***************************************************************************** */
|
|
|
|
void scic_sds_controller_link_up(
|
|
struct scic_sds_controller *this_controller,
|
|
struct scic_sds_port *the_port,
|
|
struct scic_sds_phy *the_phy);
|
|
|
|
void scic_sds_controller_link_down(
|
|
struct scic_sds_controller *this_controller,
|
|
struct scic_sds_port *the_port,
|
|
struct scic_sds_phy *the_phy);
|
|
|
|
/*
|
|
* *****************************************************************************
|
|
* * CORE CONTROLLER REMOTE DEVICE MESSAGE PROCESSING
|
|
* ***************************************************************************** */
|
|
|
|
bool scic_sds_controller_has_remote_devices_stopping(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_remote_device_started(
|
|
struct scic_sds_controller *this_controller,
|
|
struct scic_sds_remote_device *the_device);
|
|
|
|
void scic_sds_controller_remote_device_stopped(
|
|
struct scic_sds_controller *this_controller,
|
|
struct scic_sds_remote_device *the_device);
|
|
|
|
|
|
/*
|
|
* *****************************************************************************
|
|
* * CORE CONTROLLER PRIVATE METHODS
|
|
* ***************************************************************************** */
|
|
|
|
enum sci_status scic_sds_controller_validate_memory_descriptor_table(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_ram_initialization(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_assign_task_entries(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_afe_initialization(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_enable_port_task_scheduler(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_initialize_completion_queue(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_initialize_unsolicited_frame_queue(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_phy_timer_stop(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
enum sci_status scic_sds_controller_start_next_phy(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
enum sci_status scic_sds_controller_stop_phys(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
enum sci_status scic_sds_controller_stop_ports(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
enum sci_status scic_sds_controller_stop_devices(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_copy_task_context(
|
|
struct scic_sds_controller *this_controller,
|
|
struct scic_sds_request *this_request);
|
|
|
|
void scic_sds_controller_timeout_handler(
|
|
struct scic_sds_controller *controller);
|
|
|
|
void scic_sds_controller_initialize_power_control(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_register_setup(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_reset_hardware(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
enum sci_status scic_sds_controller_initialize_phy_startup(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
void scic_sds_controller_build_memory_descriptor_table(
|
|
struct scic_sds_controller *this_controller);
|
|
|
|
#endif /* _SCIC_SDS_CONTROLLER_H_ */
|