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1.1 root 1: /*
2: * Copyright (C) 2009 Michael Brown <[email protected]>.
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 <ipxe/settings.h>
29: #include <ipxe/infiniband.h>
30: #include <ipxe/iobuf.h>
31: #include <ipxe/ib_mi.h>
32: #include <ipxe/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_count_ports ( ibdev );
62: memcpy ( &node_info->sys_guid, &ibdev->node_guid,
63: sizeof ( node_info->sys_guid ) );
64: memcpy ( &node_info->node_guid, &ibdev->node_guid,
65: sizeof ( node_info->node_guid ) );
66: memcpy ( &node_info->port_guid, &ibdev->gid.s.guid,
67: sizeof ( node_info->port_guid ) );
68: node_info->partition_cap = htons ( 1 );
69: node_info->local_port_num = ibdev->port;
70:
71: /* Send GetResponse */
72: mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
73: if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
74: DBGC ( mi, "SMA %p could not send NodeInfo GetResponse: %s\n",
75: mi, strerror ( rc ) );
76: return;
77: }
78: }
79:
80: /**
81: * Node description
82: *
83: * @v ibdev Infiniband device
84: * @v mi Management interface
85: * @v mad Received MAD
86: * @v av Source address vector
87: */
88: static void ib_sma_node_desc ( struct ib_device *ibdev,
89: struct ib_mad_interface *mi,
90: union ib_mad *mad,
91: struct ib_address_vector *av ) {
92: struct ib_node_desc *node_desc = &mad->smp.smp_data.node_desc;
93: union ib_guid *guid = &ibdev->node_guid;
94: char hostname[ sizeof ( node_desc->node_string ) ];
95: int hostname_len;
96: int rc;
97:
98: /* Fill in information */
99: memset ( node_desc, 0, sizeof ( *node_desc ) );
100: hostname_len = fetch_string_setting ( NULL, &hostname_setting,
101: hostname, sizeof ( hostname ) );
102: snprintf ( node_desc->node_string, sizeof ( node_desc->node_string ),
103: "iPXE %s%s%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x (%s)",
104: hostname, ( ( hostname_len >= 0 ) ? " " : "" ),
105: guid->bytes[0], guid->bytes[1], guid->bytes[2],
106: guid->bytes[3], guid->bytes[4], guid->bytes[5],
107: guid->bytes[6], guid->bytes[7], ibdev->dev->name );
108:
109: /* Send GetResponse */
110: mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
111: if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
112: DBGC ( mi, "SMA %p could not send NodeDesc GetResponse: %s\n",
113: mi, strerror ( rc ) );
114: return;
115: }
116: }
117:
118: /**
119: * GUID information
120: *
121: * @v ibdev Infiniband device
122: * @v mi Management interface
123: * @v mad Received MAD
124: * @v av Source address vector
125: */
126: static void ib_sma_guid_info ( struct ib_device *ibdev,
127: struct ib_mad_interface *mi,
128: union ib_mad *mad,
129: struct ib_address_vector *av ) {
130: struct ib_guid_info *guid_info = &mad->smp.smp_data.guid_info;
131: int rc;
132:
133: /* Fill in information */
134: memset ( guid_info, 0, sizeof ( *guid_info ) );
135: memcpy ( guid_info->guid[0], &ibdev->gid.s.guid,
136: sizeof ( guid_info->guid[0] ) );
137:
138: /* Send GetResponse */
139: mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
140: if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
141: DBGC ( mi, "SMA %p could not send GuidInfo GetResponse: %s\n",
142: mi, strerror ( rc ) );
143: return;
144: }
145: }
146:
147: /**
148: * Set port information
149: *
150: * @v ibdev Infiniband device
151: * @v mi Management interface
152: * @v mad Received MAD
153: * @ret rc Return status code
154: */
155: static int ib_sma_set_port_info ( struct ib_device *ibdev,
156: struct ib_mad_interface *mi,
157: union ib_mad *mad ) {
158: const struct ib_port_info *port_info = &mad->smp.smp_data.port_info;
159: unsigned int link_width_enabled;
160: unsigned int link_speed_enabled;
161: int rc;
162:
163: /* Set parameters */
164: memcpy ( &ibdev->gid.s.prefix, port_info->gid_prefix,
165: sizeof ( ibdev->gid.s.prefix ) );
166: ibdev->lid = ntohs ( port_info->lid );
167: ibdev->sm_lid = ntohs ( port_info->mastersm_lid );
168: if ( ( link_width_enabled = port_info->link_width_enabled ) )
169: ibdev->link_width_enabled = link_width_enabled;
170: if ( ( link_speed_enabled =
171: ( port_info->link_speed_active__link_speed_enabled & 0xf ) ) )
172: ibdev->link_speed_enabled = link_speed_enabled;
173: ibdev->sm_sl = ( port_info->neighbour_mtu__mastersm_sl & 0xf );
174: DBGC ( mi, "SMA %p set LID %04x SMLID %04x link width %02x speed "
175: "%02x\n", mi, ibdev->lid, ibdev->sm_lid,
176: ibdev->link_width_enabled, ibdev->link_speed_enabled );
177:
178: /* Update parameters on device */
179: if ( ( rc = ib_set_port_info ( ibdev, mad ) ) != 0 ) {
180: DBGC ( mi, "SMA %p could not set port information: %s\n",
181: mi, strerror ( rc ) );
182: return rc;
183: }
184:
185: return 0;
186: }
187:
188: /**
189: * Port information
190: *
191: * @v ibdev Infiniband device
192: * @v mi Management interface
193: * @v mad Received MAD
194: * @v av Source address vector
195: */
196: static void ib_sma_port_info ( struct ib_device *ibdev,
197: struct ib_mad_interface *mi,
198: union ib_mad *mad,
199: struct ib_address_vector *av ) {
200: struct ib_port_info *port_info = &mad->smp.smp_data.port_info;
201: int rc;
202:
203: /* Set parameters if applicable */
204: if ( mad->hdr.method == IB_MGMT_METHOD_SET ) {
205: if ( ( rc = ib_sma_set_port_info ( ibdev, mi, mad ) ) != 0 ) {
206: mad->hdr.status =
207: htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR );
208: /* Fall through to generate GetResponse */
209: }
210: }
211:
212: /* Fill in information */
213: memset ( port_info, 0, sizeof ( *port_info ) );
214: memcpy ( port_info->gid_prefix, &ibdev->gid.s.prefix,
215: sizeof ( port_info->gid_prefix ) );
216: port_info->lid = ntohs ( ibdev->lid );
217: port_info->mastersm_lid = ntohs ( ibdev->sm_lid );
218: port_info->local_port_num = ibdev->port;
219: port_info->link_width_enabled = ibdev->link_width_enabled;
220: port_info->link_width_supported = ibdev->link_width_supported;
221: port_info->link_width_active = ibdev->link_width_active;
222: port_info->link_speed_supported__port_state =
223: ( ( ibdev->link_speed_supported << 4 ) | ibdev->port_state );
224: port_info->port_phys_state__link_down_def_state =
225: ( ( IB_PORT_PHYS_STATE_POLLING << 4 ) |
226: IB_PORT_PHYS_STATE_POLLING );
227: port_info->link_speed_active__link_speed_enabled =
228: ( ( ibdev->link_speed_active << 4 ) |
229: ibdev->link_speed_enabled );
230: port_info->neighbour_mtu__mastersm_sl =
231: ( ( IB_MTU_2048 << 4 ) | ibdev->sm_sl );
232: port_info->vl_cap__init_type = ( IB_VL_0 << 4 );
233: port_info->init_type_reply__mtu_cap = IB_MTU_2048;
234: port_info->operational_vls__enforcement = ( IB_VL_0 << 4 );
235: port_info->guid_cap = 1;
236:
237: /* Send GetResponse */
238: mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
239: if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
240: DBGC ( mi, "SMA %p could not send PortInfo GetResponse: %s\n",
241: mi, strerror ( rc ) );
242: return;
243: }
244: }
245:
246: /**
247: * Set partition key table
248: *
249: * @v ibdev Infiniband device
250: * @v mi Management interface
251: * @v mad Received MAD
252: * @ret rc Return status code
253: */
254: static int ib_sma_set_pkey_table ( struct ib_device *ibdev,
255: struct ib_mad_interface *mi,
256: union ib_mad *mad ) {
257: struct ib_pkey_table *pkey_table = &mad->smp.smp_data.pkey_table;
258: int rc;
259:
260: /* Set parameters */
261: ibdev->pkey = ntohs ( pkey_table->pkey[0] );
262: DBGC ( mi, "SMA %p set pkey %04x\n", mi, ibdev->pkey );
263:
264: /* Update parameters on device */
265: if ( ( rc = ib_set_pkey_table ( ibdev, mad ) ) != 0 ) {
266: DBGC ( mi, "SMA %p could not set pkey table: %s\n",
267: mi, strerror ( rc ) );
268: return rc;
269: }
270:
271: return 0;
272: }
273:
274: /**
275: * Partition key table
276: *
277: * @v ibdev Infiniband device
278: * @v mi Management interface
279: * @v mad Received MAD
280: * @v av Source address vector
281: */
282: static void ib_sma_pkey_table ( struct ib_device *ibdev,
283: struct ib_mad_interface *mi,
284: union ib_mad *mad,
285: struct ib_address_vector *av ) {
286: struct ib_pkey_table *pkey_table = &mad->smp.smp_data.pkey_table;
287: int rc;
288:
289: /* Set parameters, if applicable */
290: if ( mad->hdr.method == IB_MGMT_METHOD_SET ) {
291: if ( ( rc = ib_sma_set_pkey_table ( ibdev, mi, mad ) ) != 0 ) {
292: mad->hdr.status =
293: htons ( IB_MGMT_STATUS_UNSUPPORTED_METHOD_ATTR );
294: /* Fall through to generate GetResponse */
295: }
296: }
297:
298: /* Fill in information */
299: mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
300: memset ( pkey_table, 0, sizeof ( *pkey_table ) );
301: pkey_table->pkey[0] = htons ( ibdev->pkey );
302:
303: /* Send GetResponse */
304: mad->hdr.method = IB_MGMT_METHOD_GET_RESP;
305: if ( ( rc = ib_mi_send ( ibdev, mi, mad, av ) ) != 0 ) {
306: DBGC ( mi, "SMA %p could not send PKeyTable GetResponse: %s\n",
307: mi, strerror ( rc ) );
308: return;
309: }
310: }
311:
312: /** Subnet management agent */
313: struct ib_mad_agent ib_sma_agent[] __ib_mad_agent = {
314: {
315: .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
316: .class_version = IB_SMP_CLASS_VERSION,
317: .attr_id = htons ( IB_SMP_ATTR_NODE_INFO ),
318: .handle = ib_sma_node_info,
319: },
320: {
321: .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
322: .class_version = IB_SMP_CLASS_VERSION,
323: .attr_id = htons ( IB_SMP_ATTR_NODE_DESC ),
324: .handle = ib_sma_node_desc,
325: },
326: {
327: .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
328: .class_version = IB_SMP_CLASS_VERSION,
329: .attr_id = htons ( IB_SMP_ATTR_GUID_INFO ),
330: .handle = ib_sma_guid_info,
331: },
332: {
333: .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
334: .class_version = IB_SMP_CLASS_VERSION,
335: .attr_id = htons ( IB_SMP_ATTR_PORT_INFO ),
336: .handle = ib_sma_port_info,
337: },
338: {
339: .mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED,
340: .class_version = IB_SMP_CLASS_VERSION,
341: .attr_id = htons ( IB_SMP_ATTR_PKEY_TABLE ),
342: .handle = ib_sma_pkey_table,
343: },
344: };
345:
346: /**
347: * Create subnet management agent and interface
348: *
349: * @v ibdev Infiniband device
350: * @v mi Management interface
351: * @ret rc Return status code
352: */
353: int ib_create_sma ( struct ib_device *ibdev, struct ib_mad_interface *mi ) {
354:
355: /* Nothing to do */
356: DBGC ( ibdev, "IBDEV %p SMA using SMI %p\n", ibdev, mi );
357:
358: return 0;
359: }
360:
361: /**
362: * Destroy subnet management agent and interface
363: *
364: * @v ibdev Infiniband device
365: * @v mi Management interface
366: */
367: void ib_destroy_sma ( struct ib_device *ibdev __unused,
368: struct ib_mad_interface *mi __unused ) {
369: /* Nothing to do */
370: }
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