230 lines
6.6 KiB
C
230 lines
6.6 KiB
C
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/*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * 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 __SCU_REMOTE_NODE_CONTEXT_HEADER__
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#define __SCU_REMOTE_NODE_CONTEXT_HEADER__
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/**
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* This file contains the structures and constatns used by the SCU hardware to
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* describe a remote node context.
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*
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*
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*/
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/**
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* struct ssp_remote_node_context - This structure contains the SCU hardware
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* definition for an SSP remote node.
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*
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*
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*/
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struct ssp_remote_node_context {
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/* WORD 0 */
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/**
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* This field is the remote node index assigned for this remote node. All
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* remote nodes must have a unique remote node index. The value of the remote
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* node index can not exceed the maximum number of remote nodes reported in
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* the SCU device context capacity register.
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*/
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u32 remote_node_index:12;
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u32 reserved0_1:4;
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/**
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* This field tells the SCU hardware how many simultaneous connections that
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* this remote node will support.
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*/
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u32 remote_node_port_width:4;
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/**
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* This field tells the SCU hardware which logical port to associate with this
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* remote node.
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*/
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u32 logical_port_index:3;
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u32 reserved0_2:5;
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/**
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* This field will enable the I_T nexus loss timer for this remote node.
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*/
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u32 nexus_loss_timer_enable:1;
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/**
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* This field is the for driver debug only and is not used.
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*/
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u32 check_bit:1;
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/**
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* This field must be set to true when the hardware DMAs the remote node
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* context to the hardware SRAM. When the remote node is being invalidated
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* this field must be set to false.
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*/
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u32 is_valid:1;
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/**
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* This field must be set to true.
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*/
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u32 is_remote_node_context:1;
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/* WORD 1 - 2 */
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/**
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* This is the low word of the remote device SAS Address
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*/
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u32 remote_sas_address_lo;
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/**
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* This field is the high word of the remote device SAS Address
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*/
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u32 remote_sas_address_hi;
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/* WORD 3 */
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/**
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* This field reprensets the function number assigned to this remote device.
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* This value must match the virtual function number that is being used to
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* communicate to the device.
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*/
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u32 function_number:8;
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u32 reserved3_1:8;
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/**
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* This field provides the driver a way to cheat on the arbitration wait time
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* for this remote node.
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*/
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u32 arbitration_wait_time:16;
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/* WORD 4 */
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/**
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* This field tells the SCU hardware how long this device may occupy the
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* connection before it must be closed.
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*/
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u32 connection_occupancy_timeout:16;
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/**
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* This field tells the SCU hardware how long to maintain a connection when
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* there are no frames being transmitted on the link.
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*/
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u32 connection_inactivity_timeout:16;
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/* WORD 5 */
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/**
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* This field allows the driver to cheat on the arbitration wait time for this
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* remote node.
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*/
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u32 initial_arbitration_wait_time:16;
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/**
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* This field is tells the hardware what to program for the connection rate in
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* the open address frame. See the SAS spec for valid values.
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*/
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u32 oaf_connection_rate:4;
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/**
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* This field tells the SCU hardware what to program for the features in the
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* open address frame. See the SAS spec for valid values.
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*/
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u32 oaf_features:4;
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/**
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* This field tells the SCU hardware what to use for the source zone group in
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* the open address frame. See the SAS spec for more details on zoning.
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*/
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u32 oaf_source_zone_group:8;
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/* WORD 6 */
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/**
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* This field tells the SCU hardware what to use as the more capibilities in
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* the open address frame. See the SAS Spec for details.
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*/
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u32 oaf_more_compatibility_features;
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/* WORD 7 */
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u32 reserved7;
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};
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/**
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* struct stp_remote_node_context - This structure contains the SCU hardware
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* definition for a STP remote node.
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*
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* STP Targets are not yet supported so this definition is a placeholder until
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* we do support them.
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*/
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struct stp_remote_node_context {
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/**
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* Placeholder data for the STP remote node.
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*/
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u32 data[8];
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};
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/**
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* This union combines the SAS and SATA remote node definitions.
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*
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* union scu_remote_node_context
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*/
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union scu_remote_node_context {
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/**
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* SSP Remote Node
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*/
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struct ssp_remote_node_context ssp;
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/**
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* STP Remote Node
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*/
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struct stp_remote_node_context stp;
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};
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#endif /* __SCU_REMOTE_NODE_CONTEXT_HEADER__ */
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