/*
* Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <byteswap.h>
#include <gpxe/infiniband.h>
#include <gpxe/ib_gma.h>
#include <gpxe/ib_sma.h>
/**
* @file
*
* Infiniband Subnet Management Agent
*
*/
/**
* Get node information
*
* @v gma General management agent
* @v mad MAD
* @ret rc Return status code
*/
static int ib_sma_get_node_info ( struct ib_gma *gma,
union ib_mad *mad ) {
struct ib_device *ibdev = gma->ibdev;
struct ib_node_info *node_info = &mad->smp.smp_data.node_info;
memset ( node_info, 0, sizeof ( *node_info ) );
node_info->base_version = IB_MGMT_BASE_VERSION;
node_info->class_version = IB_SMP_CLASS_VERSION;
node_info->node_type = IB_NODE_TYPE_HCA;
node_info->num_ports = ib_get_hca_info ( ibdev, &node_info->sys_guid );
memcpy ( &node_info->node_guid, &node_info->sys_guid,
sizeof ( node_info->node_guid ) );
memcpy ( &node_info->port_guid, &ibdev->gid.u.half[1],
sizeof ( node_info->port_guid ) );
node_info->partition_cap = htons ( 1 );
node_info->local_port_num = ibdev->port;
return 0;
}
/**
* Get node description
*
* @v gma General management agent
* @v mad MAD
* @ret rc Return status code
*/
static int ib_sma_get_node_desc ( struct ib_gma *gma,
union ib_mad *mad ) {
struct ib_device *ibdev = gma->ibdev;
struct ib_node_desc *node_desc = &mad->smp.smp_data.node_desc;
struct ib_gid_half *guid = &ibdev->gid.u.half[1];
memset ( node_desc, 0, sizeof ( *node_desc ) );
snprintf ( node_desc->node_string, sizeof ( node_desc->node_string ),
"gPXE %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x (%s)",
guid->bytes[0], guid->bytes[1], guid->bytes[2],
guid->bytes[3], guid->bytes[4], guid->bytes[5],
guid->bytes[6], guid->bytes[7], ibdev->dev->name );
return 0;
}
/**
* Get GUID information
*
* @v gma General management agent
* @v mad MAD
* @ret rc Return status code
*/
static int ib_sma_get_guid_info ( struct ib_gma *gma,
union ib_mad *mad ) {
struct ib_device *ibdev = gma->ibdev;
struct ib_guid_info *guid_info = &mad->smp.smp_data.guid_info;
memset ( guid_info, 0, sizeof ( *guid_info ) );
memcpy ( guid_info->guid[0], &ibdev->gid.u.half[1],
sizeof ( guid_info->guid[0] ) );
return 0;
}
/**
* Get port information
*
* @v gma General management agent
* @v mad MAD
* @ret rc Return status code
*/
static int ib_sma_get_port_info ( struct ib_gma *gma,
union ib_mad *mad ) {
struct ib_device *ibdev = gma->ibdev;
struct ib_port_info *port_info = &mad->smp.smp_data.port_info;
memset ( port_info, 0, sizeof ( *port_info ) );
memcpy ( port_info->gid_prefix, &ibdev->gid.u.half[0],
sizeof ( port_info->gid_prefix ) );
port_info->lid = ntohs ( ibdev->lid );
port_info->mastersm_lid = ntohs ( ibdev->sm_lid );
port_info->local_port_num = ibdev->port;
port_info->link_width_enabled = ibdev->link_width;
port_info->link_width_supported = ibdev->link_width;
port_info->link_width_active = ibdev->link_width;
port_info->link_speed_supported__port_state =
( ( ibdev->link_speed << 4 ) | ibdev->port_state );
port_info->port_phys_state__link_down_def_state =
( ( IB_PORT_PHYS_STATE_POLLING << 4 ) |
IB_PORT_PHYS_STATE_POLLING );
port_info->link_speed_active__link_speed_enabled =
( ( ibdev->link_speed << 4 ) | ibdev->link_speed );
port_info->neighbour_mtu__mastersm_sl =
( ( IB_MTU_2048 << 4 ) | ibdev->sm_sl );
port_info->vl_cap__init_type = ( IB_VL_0 << 4 );
port_info->init_type_reply__mtu_cap = IB_MTU_2048;
port_info->operational_vls__enforcement = ( IB_VL_0 << 4 );
port_info->guid_cap = 1;
return 0;
}
/**
* Set port information
*
* @v gma General management agent
* @v mad MAD
* @ret rc Return status code
*/
static int ib_sma_set_port_info ( struct ib_gma *gma,
union ib_mad *mad ) {
struct ib_device *ibdev = gma->ibdev;
const struct ib_port_info *port_info = &mad->smp.smp_data.port_info;
int rc;
memcpy ( &ibdev->gid.u.half[0], port_info->gid_prefix,
sizeof ( ibdev->gid.u.half[0] ) );
ibdev->lid = ntohs ( port_info->lid );
ibdev->sm_lid = ntohs ( port_info->mastersm_lid );
ibdev->sm_sl = ( port_info->neighbour_mtu__mastersm_sl & 0xf );
if ( ( rc = ib_set_port_info ( ibdev, port_info ) ) != 0 ) {
DBGC ( ibdev, "IBDEV %p could not set port information: %s\n",
ibdev, strerror ( rc ) );
mad->hdr.status =
htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR );
}
return ib_sma_get_port_info ( gma, mad );
}
/**
* Get partition key table
*
* @v gma General management agent
* @v mad MAD
* @ret rc Return status code
*/
static int ib_sma_get_pkey_table ( struct ib_gma *gma,
union ib_mad *mad ) {
struct ib_device *ibdev = gma->ibdev;
struct ib_pkey_table *pkey_table = &mad->smp.smp_data.pkey_table;
memset ( pkey_table, 0, sizeof ( *pkey_table ) );
pkey_table->pkey[0] = htons ( ibdev->pkey );
return 0;
}
/**
* Set partition key table
*
* @v gma General management agent
* @v mad MAD
* @ret rc Return status code
*/
static int ib_sma_set_pkey_table ( struct ib_gma *gma,
union ib_mad *mad ) {
struct ib_device *ibdev = gma->ibdev;
struct ib_pkey_table *pkey_table = &mad->smp.smp_data.pkey_table;
ibdev->pkey = ntohs ( pkey_table->pkey[0] );
return ib_sma_get_pkey_table ( gma, mad );
}
/** List of attribute handlers */
struct ib_gma_handler ib_sma_handlers[] __ib_gma_handler = {
{
.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
.mgmt_class_ignore = IB_SMP_CLASS_IGNORE,
.class_version = IB_SMP_CLASS_VERSION,
.method = IB_MGMT_METHOD_GET,
.resp_method = IB_MGMT_METHOD_GET_RESP,
.attr_id = htons ( IB_SMP_ATTR_NODE_INFO ),
.handle = ib_sma_get_node_info,
},
{
.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
.mgmt_class_ignore = IB_SMP_CLASS_IGNORE,
.class_version = IB_SMP_CLASS_VERSION,
.method = IB_MGMT_METHOD_GET,
.resp_method = IB_MGMT_METHOD_GET_RESP,
.attr_id = htons ( IB_SMP_ATTR_NODE_DESC ),
.handle = ib_sma_get_node_desc,
},
{
.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
.mgmt_class_ignore = IB_SMP_CLASS_IGNORE,
.class_version = IB_SMP_CLASS_VERSION,
.method = IB_MGMT_METHOD_GET,
.resp_method = IB_MGMT_METHOD_GET_RESP,
.attr_id = htons ( IB_SMP_ATTR_GUID_INFO ),
.handle = ib_sma_get_guid_info,
},
{
.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
.mgmt_class_ignore = IB_SMP_CLASS_IGNORE,
.class_version = IB_SMP_CLASS_VERSION,
.method = IB_MGMT_METHOD_GET,
.resp_method = IB_MGMT_METHOD_GET_RESP,
.attr_id = htons ( IB_SMP_ATTR_PORT_INFO ),
.handle = ib_sma_get_port_info,
},
{
.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
.mgmt_class_ignore = IB_SMP_CLASS_IGNORE,
.class_version = IB_SMP_CLASS_VERSION,
.method = IB_MGMT_METHOD_SET,
.resp_method = IB_MGMT_METHOD_GET_RESP,
.attr_id = htons ( IB_SMP_ATTR_PORT_INFO ),
.handle = ib_sma_set_port_info,
},
{
.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
.mgmt_class_ignore = IB_SMP_CLASS_IGNORE,
.class_version = IB_SMP_CLASS_VERSION,
.method = IB_MGMT_METHOD_GET,
.resp_method = IB_MGMT_METHOD_GET_RESP,
.attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE ),
.handle = ib_sma_get_pkey_table,
},
{
.mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
.mgmt_class_ignore = IB_SMP_CLASS_IGNORE,
.class_version = IB_SMP_CLASS_VERSION,
.method = IB_MGMT_METHOD_SET,
.resp_method = IB_MGMT_METHOD_GET_RESP,
.attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE ),
.handle = ib_sma_set_pkey_table,
},
};
/**
* Create SMA
*
* @v sma Subnet management agent
* @v ibdev Infiniband device
* @v op Subnet management operations
* @ret rc Return status code
*/
int ib_create_sma ( struct ib_sma *sma, struct ib_device *ibdev ) {
int rc;
/* Initialise GMA */
if ( ( rc = ib_create_gma ( &sma->gma, ibdev, 0 ) ) != 0 ) {
DBGC ( sma, "SMA %p could not create GMA: %s\n",
sma, strerror ( rc ) );
goto err_create_gma;
}
/* If we don't get QP0, we can't function */
if ( sma->gma.qp->qpn != IB_QPN_SMA ) {
DBGC ( sma, "SMA %p on QPN %lx, needs to be on QPN 0\n",
sma, sma->gma.qp->qpn );
rc = -ENOTSUP;
goto err_not_qp0;
}
return 0;
err_not_qp0:
ib_destroy_gma ( &sma->gma );
err_create_gma:
return rc;
}
/**
* Destroy SMA
*
* @v sma Subnet management agent
*/
void ib_destroy_sma ( struct ib_sma *sma ) {
ib_destroy_gma ( &sma->gma );
}
