/*
* This file is provided under a dual BSD / GPLv2 license . When using or
* redistributing this file , you may do so under either license .
*
* GPL LICENSE SUMMARY
*
* Copyright ( c ) 2008 - 2011 Intel Corporation . All rights reserved .
*
* This program is free software ; you can redistribute it and / or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation .
*
* This program is distributed in the hope that it will be useful , but
* WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* General Public License for more details .
*
* You should have received a copy of the GNU General Public License
* along with this program ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin St - Fifth Floor , Boston , MA 02110 - 1301 USA .
* The full GNU General Public License is included in this distribution
* in the file called LICENSE . GPL .
*
* BSD LICENSE
*
* Copyright ( c ) 2008 - 2011 Intel Corporation . All rights reserved .
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
*
* * Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* * Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in
* the documentation and / or other materials provided with the
* distribution .
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT , INDIRECT , INCIDENTAL ,
* SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES ( INCLUDING , BUT NOT
* LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS OF USE ,
* DATA , OR PROFITS ; OR BUSINESS INTERRUPTION ) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY , OR TORT
* ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE .
*/
#ifndef __SCU_REMOTE_NODE_CONTEXT_HEADER__
#define __SCU_REMOTE_NODE_CONTEXT_HEADER__
/**
* This file contains the structures and constatns used by the SCU hardware to
* describe a remote node context .
*
*
*/
/**
* struct ssp_remote_node_context - This structure contains the SCU hardware
* definition for an SSP remote node .
*
*
*/
struct ssp_remote_node_context {
/* WORD 0 */
/**
* This field is the remote node index assigned for this remote node . All
* remote nodes must have a unique remote node index . The value of the remote
* node index can not exceed the maximum number of remote nodes reported in
* the SCU device context capacity register .
*/
u32 remote_node_index:12 ;
u32 reserved0_1:4 ;
/**
* This field tells the SCU hardware how many simultaneous connections that
* this remote node will support .
*/
u32 remote_node_port_width:4 ;
/**
* This field tells the SCU hardware which logical port to associate with this
* remote node .
*/
u32 logical_port_index:3 ;
u32 reserved0_2:5 ;
/**
* This field will enable the I_T nexus loss timer for this remote node .
*/
u32 nexus_loss_timer_enable:1 ;
/**
* This field is the for driver debug only and is not used .
*/
u32 check_bit:1 ;
/**
* This field must be set to true when the hardware DMAs the remote node
* context to the hardware SRAM . When the remote node is being invalidated
* this field must be set to false .
*/
u32 is_valid:1 ;
/**
* This field must be set to true .
*/
u32 is_remote_node_context:1 ;
/* WORD 1 - 2 */
/**
* This is the low word of the remote device SAS Address
*/
u32 remote_sas_address_lo;
/**
* This field is the high word of the remote device SAS Address
*/
u32 remote_sas_address_hi;
/* WORD 3 */
/**
* This field reprensets the function number assigned to this remote device .
* This value must match the virtual function number that is being used to
* communicate to the device .
*/
u32 function_number:8 ;
u32 reserved3_1:8 ;
/**
* This field provides the driver a way to cheat on the arbitration wait time
* for this remote node .
*/
u32 arbitration_wait_time:16 ;
/* WORD 4 */
/**
* This field tells the SCU hardware how long this device may occupy the
* connection before it must be closed .
*/
u32 connection_occupancy_timeout:16 ;
/**
* This field tells the SCU hardware how long to maintain a connection when
* there are no frames being transmitted on the link .
*/
u32 connection_inactivity_timeout:16 ;
/* WORD 5 */
/**
* This field allows the driver to cheat on the arbitration wait time for this
* remote node .
*/
u32 initial_arbitration_wait_time:16 ;
/**
* This field is tells the hardware what to program for the connection rate in
* the open address frame . See the SAS spec for valid values .
*/
u32 oaf_connection_rate:4 ;
/**
* This field tells the SCU hardware what to program for the features in the
* open address frame . See the SAS spec for valid values .
*/
u32 oaf_features:4 ;
/**
* This field tells the SCU hardware what to use for the source zone group in
* the open address frame . See the SAS spec for more details on zoning .
*/
u32 oaf_source_zone_group:8 ;
/* WORD 6 */
/**
* This field tells the SCU hardware what to use as the more capibilities in
* the open address frame . See the SAS Spec for details .
*/
u32 oaf_more_compatibility_features;
/* WORD 7 */
u32 reserved7;
};
/**
* struct stp_remote_node_context - This structure contains the SCU hardware
* definition for a STP remote node .
*
* STP Targets are not yet supported so this definition is a placeholder until
* we do support them .
*/
struct stp_remote_node_context {
/**
* Placeholder data for the STP remote node .
*/
u32 data[8 ];
};
/**
* This union combines the SAS and SATA remote node definitions .
*
* union scu_remote_node_context
*/
union scu_remote_node_context {
/**
* SSP Remote Node
*/
struct ssp_remote_node_context ssp;
/**
* STP Remote Node
*/
struct stp_remote_node_context stp;
};
#endif /* __SCU_REMOTE_NODE_CONTEXT_HEADER__ */
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