Greg Hartman | 76d05dc | 2016-11-23 15:51:27 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License as |
| 6 | * published by the Free Software Foundation; either version 2 of the |
| 7 | * License, or any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but |
| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 17 | */ |
| 18 | |
| 19 | FILE_LICENCE ( GPL2_OR_LATER ); |
| 20 | |
| 21 | #include <stdint.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | #include <errno.h> |
| 25 | #include <stdio.h> |
| 26 | #include <unistd.h> |
| 27 | #include <byteswap.h> |
| 28 | #include <gpxe/settings.h> |
| 29 | #include <gpxe/infiniband.h> |
| 30 | #include <gpxe/iobuf.h> |
| 31 | #include <gpxe/ib_mi.h> |
| 32 | #include <gpxe/ib_sma.h> |
| 33 | |
| 34 | /** |
| 35 | * @file |
| 36 | * |
| 37 | * Infiniband Subnet Management Agent |
| 38 | * |
| 39 | */ |
| 40 | |
| 41 | /** |
| 42 | * Node information |
| 43 | * |
| 44 | * @v ibdev Infiniband device |
| 45 | * @v mi Management interface |
| 46 | * @v mad Received MAD |
| 47 | * @v av Source address vector |
| 48 | */ |
| 49 | static void ib_sma_node_info ( struct ib_device *ibdev, |
| 50 | struct ib_mad_interface *mi, |
| 51 | union ib_mad *mad, |
| 52 | struct ib_address_vector *av ) { |
| 53 | struct ib_node_info *node_info = &mad->smp.smp_data.node_info; |
| 54 | int rc; |
| 55 | |
| 56 | /* Fill in information */ |
| 57 | memset ( node_info, 0, sizeof ( *node_info ) ); |
| 58 | node_info->base_version = IB_MGMT_BASE_VERSION; |
| 59 | node_info->class_version = IB_SMP_CLASS_VERSION; |
| 60 | node_info->node_type = IB_NODE_TYPE_HCA; |
| 61 | node_info->num_ports = ib_get_hca_info ( ibdev, &node_info->sys_guid ); |
| 62 | memcpy ( &node_info->node_guid, &node_info->sys_guid, |
| 63 | sizeof ( node_info->node_guid ) ); |
| 64 | memcpy ( &node_info->port_guid, &ibdev->gid.u.half[1], |
| 65 | sizeof ( node_info->port_guid ) ); |
| 66 | node_info->partition_cap = htons ( 1 ); |
| 67 | node_info->local_port_num = ibdev->port; |
| 68 | |
| 69 | /* Send GetResponse */ |
| 70 | mad->hdr.method = IB_MGMT_METHOD_GET_RESP; |
| 71 | if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) { |
| 72 | DBGC ( mi, "SMA %p could not send NodeInfo GetResponse: %s\n", |
| 73 | mi, strerror ( rc ) ); |
| 74 | return; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * Node description |
| 80 | * |
| 81 | * @v ibdev Infiniband device |
| 82 | * @v mi Management interface |
| 83 | * @v mad Received MAD |
| 84 | * @v av Source address vector |
| 85 | */ |
| 86 | static void ib_sma_node_desc ( struct ib_device *ibdev, |
| 87 | struct ib_mad_interface *mi, |
| 88 | union ib_mad *mad, |
| 89 | struct ib_address_vector *av ) { |
| 90 | struct ib_node_desc *node_desc = &mad->smp.smp_data.node_desc; |
| 91 | struct ib_gid_half guid; |
| 92 | char hostname[ sizeof ( node_desc->node_string ) ]; |
| 93 | int hostname_len; |
| 94 | int rc; |
| 95 | |
| 96 | /* Fill in information */ |
| 97 | memset ( node_desc, 0, sizeof ( *node_desc ) ); |
| 98 | ib_get_hca_info ( ibdev, &guid ); |
| 99 | hostname_len = fetch_string_setting ( NULL, &hostname_setting, |
| 100 | hostname, sizeof ( hostname ) ); |
| 101 | snprintf ( node_desc->node_string, sizeof ( node_desc->node_string ), |
| 102 | "gPXE %s%s%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x (%s)", |
| 103 | hostname, ( ( hostname_len >= 0 ) ? " " : "" ), |
| 104 | guid.u.bytes[0], guid.u.bytes[1], guid.u.bytes[2], |
| 105 | guid.u.bytes[3], guid.u.bytes[4], guid.u.bytes[5], |
| 106 | guid.u.bytes[6], guid.u.bytes[7], ibdev->dev->name ); |
| 107 | |
| 108 | /* Send GetResponse */ |
| 109 | mad->hdr.method = IB_MGMT_METHOD_GET_RESP; |
| 110 | if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) { |
| 111 | DBGC ( mi, "SMA %p could not send NodeDesc GetResponse: %s\n", |
| 112 | mi, strerror ( rc ) ); |
| 113 | return; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * GUID information |
| 119 | * |
| 120 | * @v ibdev Infiniband device |
| 121 | * @v mi Management interface |
| 122 | * @v mad Received MAD |
| 123 | * @v av Source address vector |
| 124 | */ |
| 125 | static void ib_sma_guid_info ( struct ib_device *ibdev, |
| 126 | struct ib_mad_interface *mi, |
| 127 | union ib_mad *mad, |
| 128 | struct ib_address_vector *av ) { |
| 129 | struct ib_guid_info *guid_info = &mad->smp.smp_data.guid_info; |
| 130 | int rc; |
| 131 | |
| 132 | /* Fill in information */ |
| 133 | memset ( guid_info, 0, sizeof ( *guid_info ) ); |
| 134 | memcpy ( guid_info->guid[0], &ibdev->gid.u.half[1], |
| 135 | sizeof ( guid_info->guid[0] ) ); |
| 136 | |
| 137 | /* Send GetResponse */ |
| 138 | mad->hdr.method = IB_MGMT_METHOD_GET_RESP; |
| 139 | if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) { |
| 140 | DBGC ( mi, "SMA %p could not send GuidInfo GetResponse: %s\n", |
| 141 | mi, strerror ( rc ) ); |
| 142 | return; |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Set port information |
| 148 | * |
| 149 | * @v ibdev Infiniband device |
| 150 | * @v mi Management interface |
| 151 | * @v mad Received MAD |
| 152 | * @ret rc Return status code |
| 153 | */ |
| 154 | static int ib_sma_set_port_info ( struct ib_device *ibdev, |
| 155 | struct ib_mad_interface *mi, |
| 156 | union ib_mad *mad ) { |
| 157 | const struct ib_port_info *port_info = &mad->smp.smp_data.port_info; |
| 158 | unsigned int link_width_enabled; |
| 159 | unsigned int link_speed_enabled; |
| 160 | int rc; |
| 161 | |
| 162 | /* Set parameters */ |
| 163 | memcpy ( &ibdev->gid.u.half[0], port_info->gid_prefix, |
| 164 | sizeof ( ibdev->gid.u.half[0] ) ); |
| 165 | ibdev->lid = ntohs ( port_info->lid ); |
| 166 | ibdev->sm_lid = ntohs ( port_info->mastersm_lid ); |
| 167 | if ( ( link_width_enabled = port_info->link_width_enabled ) ) |
| 168 | ibdev->link_width_enabled = link_width_enabled; |
| 169 | if ( ( link_speed_enabled = |
| 170 | ( port_info->link_speed_active__link_speed_enabled & 0xf ) ) ) |
| 171 | ibdev->link_speed_enabled = link_speed_enabled; |
| 172 | ibdev->sm_sl = ( port_info->neighbour_mtu__mastersm_sl & 0xf ); |
| 173 | DBGC ( mi, "SMA %p set LID %04x SMLID %04x link width %02x speed " |
| 174 | "%02x\n", mi, ibdev->lid, ibdev->sm_lid, |
| 175 | ibdev->link_width_enabled, ibdev->link_speed_enabled ); |
| 176 | |
| 177 | /* Update parameters on device */ |
| 178 | if ( ( rc = ib_set_port_info ( ibdev, mad ) ) != 0 ) { |
| 179 | DBGC ( mi, "SMA %p could not set port information: %s\n", |
| 180 | mi, strerror ( rc ) ); |
| 181 | return rc; |
| 182 | } |
| 183 | |
| 184 | return 0; |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Port information |
| 189 | * |
| 190 | * @v ibdev Infiniband device |
| 191 | * @v mi Management interface |
| 192 | * @v mad Received MAD |
| 193 | * @v av Source address vector |
| 194 | */ |
| 195 | static void ib_sma_port_info ( struct ib_device *ibdev, |
| 196 | struct ib_mad_interface *mi, |
| 197 | union ib_mad *mad, |
| 198 | struct ib_address_vector *av ) { |
| 199 | struct ib_port_info *port_info = &mad->smp.smp_data.port_info; |
| 200 | int rc; |
| 201 | |
| 202 | /* Set parameters if applicable */ |
| 203 | if ( mad->hdr.method == IB_MGMT_METHOD_SET ) { |
| 204 | if ( ( rc = ib_sma_set_port_info ( ibdev, mi, mad ) ) != 0 ) { |
| 205 | mad->hdr.status = |
| 206 | htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR ); |
| 207 | /* Fall through to generate GetResponse */ |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | /* Fill in information */ |
| 212 | memset ( port_info, 0, sizeof ( *port_info ) ); |
| 213 | memcpy ( port_info->gid_prefix, &ibdev->gid.u.half[0], |
| 214 | sizeof ( port_info->gid_prefix ) ); |
| 215 | port_info->lid = ntohs ( ibdev->lid ); |
| 216 | port_info->mastersm_lid = ntohs ( ibdev->sm_lid ); |
| 217 | port_info->local_port_num = ibdev->port; |
| 218 | port_info->link_width_enabled = ibdev->link_width_enabled; |
| 219 | port_info->link_width_supported = ibdev->link_width_supported; |
| 220 | port_info->link_width_active = ibdev->link_width_active; |
| 221 | port_info->link_speed_supported__port_state = |
| 222 | ( ( ibdev->link_speed_supported << 4 ) | ibdev->port_state ); |
| 223 | port_info->port_phys_state__link_down_def_state = |
| 224 | ( ( IB_PORT_PHYS_STATE_POLLING << 4 ) | |
| 225 | IB_PORT_PHYS_STATE_POLLING ); |
| 226 | port_info->link_speed_active__link_speed_enabled = |
| 227 | ( ( ibdev->link_speed_active << 4 ) | |
| 228 | ibdev->link_speed_enabled ); |
| 229 | port_info->neighbour_mtu__mastersm_sl = |
| 230 | ( ( IB_MTU_2048 << 4 ) | ibdev->sm_sl ); |
| 231 | port_info->vl_cap__init_type = ( IB_VL_0 << 4 ); |
| 232 | port_info->init_type_reply__mtu_cap = IB_MTU_2048; |
| 233 | port_info->operational_vls__enforcement = ( IB_VL_0 << 4 ); |
| 234 | port_info->guid_cap = 1; |
| 235 | |
| 236 | /* Send GetResponse */ |
| 237 | mad->hdr.method = IB_MGMT_METHOD_GET_RESP; |
| 238 | if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) { |
| 239 | DBGC ( mi, "SMA %p could not send PortInfo GetResponse: %s\n", |
| 240 | mi, strerror ( rc ) ); |
| 241 | return; |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * Set partition key table |
| 247 | * |
| 248 | * @v ibdev Infiniband device |
| 249 | * @v mi Management interface |
| 250 | * @v mad Received MAD |
| 251 | * @ret rc Return status code |
| 252 | */ |
| 253 | static int ib_sma_set_pkey_table ( struct ib_device *ibdev, |
| 254 | struct ib_mad_interface *mi, |
| 255 | union ib_mad *mad ) { |
| 256 | struct ib_pkey_table *pkey_table = &mad->smp.smp_data.pkey_table; |
| 257 | int rc; |
| 258 | |
| 259 | /* Set parameters */ |
| 260 | ibdev->pkey = ntohs ( pkey_table->pkey[0] ); |
| 261 | DBGC ( mi, "SMA %p set pkey %04x\n", mi, ibdev->pkey ); |
| 262 | |
| 263 | /* Update parameters on device */ |
| 264 | if ( ( rc = ib_set_pkey_table ( ibdev, mad ) ) != 0 ) { |
| 265 | DBGC ( mi, "SMA %p could not set pkey table: %s\n", |
| 266 | mi, strerror ( rc ) ); |
| 267 | return rc; |
| 268 | } |
| 269 | |
| 270 | return 0; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Partition key table |
| 275 | * |
| 276 | * @v ibdev Infiniband device |
| 277 | * @v mi Management interface |
| 278 | * @v mad Received MAD |
| 279 | * @v av Source address vector |
| 280 | */ |
| 281 | static void ib_sma_pkey_table ( struct ib_device *ibdev, |
| 282 | struct ib_mad_interface *mi, |
| 283 | union ib_mad *mad, |
| 284 | struct ib_address_vector *av ) { |
| 285 | struct ib_pkey_table *pkey_table = &mad->smp.smp_data.pkey_table; |
| 286 | int rc; |
| 287 | |
| 288 | /* Set parameters, if applicable */ |
| 289 | if ( mad->hdr.method == IB_MGMT_METHOD_SET ) { |
| 290 | if ( ( rc = ib_sma_set_pkey_table ( ibdev, mi, mad ) ) != 0 ) { |
| 291 | mad->hdr.status = |
| 292 | htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR ); |
| 293 | /* Fall through to generate GetResponse */ |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | /* Fill in information */ |
| 298 | mad->hdr.method = IB_MGMT_METHOD_GET_RESP; |
| 299 | memset ( pkey_table, 0, sizeof ( *pkey_table ) ); |
| 300 | pkey_table->pkey[0] = htons ( ibdev->pkey ); |
| 301 | |
| 302 | /* Send GetResponse */ |
| 303 | mad->hdr.method = IB_MGMT_METHOD_GET_RESP; |
| 304 | if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) { |
| 305 | DBGC ( mi, "SMA %p could not send PKeyTable GetResponse: %s\n", |
| 306 | mi, strerror ( rc ) ); |
| 307 | return; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | /** Subnet management agent */ |
| 312 | struct ib_mad_agent ib_sma_agent[] __ib_mad_agent = { |
| 313 | { |
| 314 | .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED, |
| 315 | .class_version = IB_SMP_CLASS_VERSION, |
| 316 | .attr_id = htons ( IB_SMP_ATTR_NODE_INFO ), |
| 317 | .handle = ib_sma_node_info, |
| 318 | }, |
| 319 | { |
| 320 | .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED, |
| 321 | .class_version = IB_SMP_CLASS_VERSION, |
| 322 | .attr_id = htons ( IB_SMP_ATTR_NODE_DESC ), |
| 323 | .handle = ib_sma_node_desc, |
| 324 | }, |
| 325 | { |
| 326 | .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED, |
| 327 | .class_version = IB_SMP_CLASS_VERSION, |
| 328 | .attr_id = htons ( IB_SMP_ATTR_GUID_INFO ), |
| 329 | .handle = ib_sma_guid_info, |
| 330 | }, |
| 331 | { |
| 332 | .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED, |
| 333 | .class_version = IB_SMP_CLASS_VERSION, |
| 334 | .attr_id = htons ( IB_SMP_ATTR_PORT_INFO ), |
| 335 | .handle = ib_sma_port_info, |
| 336 | }, |
| 337 | { |
| 338 | .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED, |
| 339 | .class_version = IB_SMP_CLASS_VERSION, |
| 340 | .attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE ), |
| 341 | .handle = ib_sma_pkey_table, |
| 342 | }, |
| 343 | }; |
| 344 | |
| 345 | /** |
| 346 | * Create subnet management agent and interface |
| 347 | * |
| 348 | * @v ibdev Infiniband device |
| 349 | * @v mi Management interface |
| 350 | * @ret rc Return status code |
| 351 | */ |
| 352 | int ib_create_sma ( struct ib_device *ibdev, struct ib_mad_interface *mi ) { |
| 353 | |
| 354 | /* Nothing to do */ |
| 355 | DBGC ( ibdev, "IBDEV %p SMA using SMI %p\n", ibdev, mi ); |
| 356 | |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Destroy subnet management agent and interface |
| 362 | * |
| 363 | * @v ibdev Infiniband device |
| 364 | * @v mi Management interface |
| 365 | */ |
| 366 | void ib_destroy_sma ( struct ib_device *ibdev __unused, |
| 367 | struct ib_mad_interface *mi __unused ) { |
| 368 | /* Nothing to do */ |
| 369 | } |