mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 10:10:54 +07:00
45660591ee
s/remtoe/remote/ and add a missing '.' Link: https://lore.kernel.org/r/20201003055709.766119-1-christophe.jaillet@wanadoo.fr Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
189 lines
6.3 KiB
C
189 lines
6.3 KiB
C
/*
|
|
* 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 _SCIC_SDS_REMOTE_NODE_TABLE_H_
|
|
#define _SCIC_SDS_REMOTE_NODE_TABLE_H_
|
|
|
|
#include "isci.h"
|
|
|
|
/**
|
|
*
|
|
*
|
|
* Remote node sets are sets of remote node index in the remote node table. The
|
|
* SCU hardware requires that STP remote node entries take three consecutive
|
|
* remote node index so the table is arranged in sets of three. The bits are
|
|
* used as 0111 0111 to make a byte and the bits define the set of three remote
|
|
* nodes to use as a sequence.
|
|
*/
|
|
#define SCIC_SDS_REMOTE_NODE_SETS_PER_BYTE 2
|
|
|
|
/**
|
|
*
|
|
*
|
|
* Since the remote node table is organized as DWORDS take the remote node sets
|
|
* in bytes and represent them in DWORDs. The lowest ordered bits are the ones
|
|
* used in case full DWORD is not being used. i.e. 0000 0000 0000 0000 0111
|
|
* 0111 0111 0111 // if only a single WORD is in use in the DWORD.
|
|
*/
|
|
#define SCIC_SDS_REMOTE_NODE_SETS_PER_DWORD \
|
|
(sizeof(u32) * SCIC_SDS_REMOTE_NODE_SETS_PER_BYTE)
|
|
/**
|
|
*
|
|
*
|
|
* This is a count of the numeber of remote nodes that can be represented in a
|
|
* byte
|
|
*/
|
|
#define SCIC_SDS_REMOTE_NODES_PER_BYTE \
|
|
(SCU_STP_REMOTE_NODE_COUNT * SCIC_SDS_REMOTE_NODE_SETS_PER_BYTE)
|
|
|
|
/**
|
|
*
|
|
*
|
|
* This is a count of the number of remote nodes that can be represented in a
|
|
* DWROD
|
|
*/
|
|
#define SCIC_SDS_REMOTE_NODES_PER_DWORD \
|
|
(sizeof(u32) * SCIC_SDS_REMOTE_NODES_PER_BYTE)
|
|
|
|
/**
|
|
*
|
|
*
|
|
* This is the number of bits in a remote node group
|
|
*/
|
|
#define SCIC_SDS_REMOTE_NODES_BITS_PER_GROUP 4
|
|
|
|
#define SCIC_SDS_REMOTE_NODE_TABLE_INVALID_INDEX (0xFFFFFFFF)
|
|
#define SCIC_SDS_REMOTE_NODE_TABLE_FULL_SLOT_VALUE (0x07)
|
|
#define SCIC_SDS_REMOTE_NODE_TABLE_EMPTY_SLOT_VALUE (0x00)
|
|
|
|
/**
|
|
*
|
|
*
|
|
* Expander attached sata remote node count
|
|
*/
|
|
#define SCU_STP_REMOTE_NODE_COUNT 3
|
|
|
|
/**
|
|
*
|
|
*
|
|
* Expander or direct attached ssp remote node count
|
|
*/
|
|
#define SCU_SSP_REMOTE_NODE_COUNT 1
|
|
|
|
/**
|
|
*
|
|
*
|
|
* Direct attached STP remote node count
|
|
*/
|
|
#define SCU_SATA_REMOTE_NODE_COUNT 1
|
|
|
|
/**
|
|
* struct sci_remote_node_table -
|
|
*
|
|
*
|
|
*/
|
|
struct sci_remote_node_table {
|
|
/**
|
|
* This field contains the array size in dwords
|
|
*/
|
|
u16 available_nodes_array_size;
|
|
|
|
/**
|
|
* This field contains the array size of the
|
|
*/
|
|
u16 group_array_size;
|
|
|
|
/**
|
|
* This field is the array of available remote node entries in bits.
|
|
* Because of the way STP remote node data is allocated on the SCU hardware
|
|
* the remote nodes must occupy three consecutive remote node context
|
|
* entries. For ease of allocation and de-allocation we have broken the
|
|
* sets of three into a single nibble. When the STP RNi is allocated all
|
|
* of the bits in the nibble are cleared. This math results in a table size
|
|
* of MAX_REMOTE_NODES / CONSECUTIVE RNi ENTRIES for STP / 2 entries per byte.
|
|
*/
|
|
u32 available_remote_nodes[
|
|
(SCI_MAX_REMOTE_DEVICES / SCIC_SDS_REMOTE_NODES_PER_DWORD)
|
|
+ ((SCI_MAX_REMOTE_DEVICES % SCIC_SDS_REMOTE_NODES_PER_DWORD) != 0)];
|
|
|
|
/**
|
|
* This field is the nibble selector for the above table. There are three
|
|
* possible selectors each for fast lookup when trying to find one, two or
|
|
* three remote node entries.
|
|
*/
|
|
u32 remote_node_groups[
|
|
SCU_STP_REMOTE_NODE_COUNT][
|
|
(SCI_MAX_REMOTE_DEVICES / (32 * SCU_STP_REMOTE_NODE_COUNT))
|
|
+ ((SCI_MAX_REMOTE_DEVICES % (32 * SCU_STP_REMOTE_NODE_COUNT)) != 0)];
|
|
|
|
};
|
|
|
|
/* --------------------------------------------------------------------------- */
|
|
|
|
void sci_remote_node_table_initialize(
|
|
struct sci_remote_node_table *remote_node_table,
|
|
u32 remote_node_entries);
|
|
|
|
u16 sci_remote_node_table_allocate_remote_node(
|
|
struct sci_remote_node_table *remote_node_table,
|
|
u32 remote_node_count);
|
|
|
|
void sci_remote_node_table_release_remote_node_index(
|
|
struct sci_remote_node_table *remote_node_table,
|
|
u32 remote_node_count,
|
|
u16 remote_node_index);
|
|
|
|
#endif /* _SCIC_SDS_REMOTE_NODE_TABLE_H_ */
|