1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <sys/dditypes.h>
27 #include <sys/mdb_modapi.h>
28 #include <sys/modctl.h>
29 #include <sys/sunddi.h>
30 #include <sys/sysmacros.h>
31 #include <sys/lpif.h>
32 #include <srp.h>
33 #include <srpt_impl.h>
34
35 /*
36 * byteswap macros since ntohl not available in kernel mdb
37 */
38 #if defined(_LITTLE_ENDIAN)
39 #define SRPT_BSWAP_32(x) (((uint32_t)(x) << 24) | \
40 (((uint32_t)(x) << 8) & 0xff0000) | \
41 (((uint32_t)(x) >> 8) & 0xff00) | \
42 ((uint32_t)(x) >> 24))
43 #define SRPT_BSWAP_16(x) ((((x) & 0xff) << 8) | ((x) >> 8))
44 #else
45 #define SRPT_BSWAP_32(x) (x)
46 #define SRPT_BSWAP_16(x) (x)
47 #endif /* _LITTLE_ENDIAN */
48
49 /*
50 * Walker to list the addresses of all the active I/O Controllers
51 */
52 static int
srpt_ioc_walk_init(mdb_walk_state_t * wsp)53 srpt_ioc_walk_init(mdb_walk_state_t *wsp)
54 {
55 srpt_ctxt_t *srpt;
56 uintptr_t srpt_global_addr, list_addr;
57
58 if (mdb_readvar(&srpt, "srpt_ctxt") == -1) {
59 mdb_warn("failed to read srpt soft state");
60 return (WALK_ERR);
61 }
62
63 srpt_global_addr = (uintptr_t)srpt;
64
65 list_addr = srpt_global_addr + offsetof(srpt_ctxt_t, sc_ioc_list);
66
67 wsp->walk_addr = list_addr;
68
69 if (mdb_layered_walk("list", wsp) == -1) {
70 mdb_warn("list walk failed");
71 return (WALK_ERR);
72 }
73 return (WALK_NEXT);
74 }
75
76 static int
srpt_list_walk_step(mdb_walk_state_t * wsp)77 srpt_list_walk_step(mdb_walk_state_t *wsp)
78 {
79 if (wsp->walk_addr == 0) {
80 return (WALK_DONE);
81 }
82 return (wsp->walk_callback(wsp->walk_addr, wsp->walk_layer,
83 wsp->walk_cbdata));
84 }
85
86 /*
87 * Walker to list the target services per I/O Controller. The I/O Controller is
88 * provided as input.
89 */
90 static int
srpt_tgt_walk_init(mdb_walk_state_t * wsp)91 srpt_tgt_walk_init(mdb_walk_state_t *wsp)
92 {
93 srpt_ioc_t srpt_ioc;
94
95 /*
96 * Input should be a srpt_ioc_t, read it to get the
97 * srpt_target_port_t
98 */
99 if (wsp->walk_addr == 0) {
100 mdb_warn("<srpt_ioc_t addr>::walk srpt_target\n");
101 return (WALK_ERR);
102 }
103
104 if (mdb_vread(&srpt_ioc, sizeof (srpt_ioc_t), wsp->walk_addr) == -1) {
105 mdb_warn("failed to read in the srpt_ioc\n ");
106 return (WALK_ERR);
107 }
108
109 wsp->walk_addr = (uintptr_t)srpt_ioc.ioc_tgt_port;
110 wsp->walk_data = mdb_alloc(sizeof (srpt_target_port_t), UM_SLEEP);
111 return (WALK_NEXT);
112 }
113
114 static int
srpt_tgt_walk_step(mdb_walk_state_t * wsp)115 srpt_tgt_walk_step(mdb_walk_state_t *wsp)
116 {
117 if (wsp->walk_addr == 0) {
118 return (WALK_DONE);
119 }
120
121 (void) wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
122 wsp->walk_cbdata);
123
124 /* Currently there is only one target per IOC */
125 return (WALK_DONE);
126
127 }
128
129 static void
srpt_tgt_walk_fini(mdb_walk_state_t * wsp)130 srpt_tgt_walk_fini(mdb_walk_state_t *wsp)
131 {
132 mdb_free(wsp->walk_data, sizeof (srpt_target_port_t));
133 }
134
135 /*
136 * Walker to list the channels per SRP target service. The target port is
137 * provided as input.
138 */
139 static int
srpt_channel_walk_init(mdb_walk_state_t * wsp)140 srpt_channel_walk_init(mdb_walk_state_t *wsp)
141 {
142 /*
143 * Input should be a srpt_target_port_t, read it to get the
144 * list of channels
145 */
146 if (wsp->walk_addr == 0) {
147 mdb_warn("<srpt_target_port_t addr>::walk srpt_channel\n");
148 return (WALK_ERR);
149 }
150
151 wsp->walk_addr += offsetof(srpt_target_port_t, tp_ch_list);
152
153 if (mdb_layered_walk("list", wsp) == -1) {
154 mdb_warn("Could not walk tp_ch_list");
155 return (WALK_ERR);
156 }
157 return (WALK_NEXT);
158 }
159
160 /*
161 * Walker to list the SCSI sessions per target. The target is
162 * provided as input.
163 */
164 static int
srpt_scsi_session_walk_init(mdb_walk_state_t * wsp)165 srpt_scsi_session_walk_init(mdb_walk_state_t *wsp)
166 {
167 /*
168 * Input should be a srpt_target_port_t, read it to get the
169 * srpt_session_t
170 */
171 if (wsp->walk_addr == 0) {
172 mdb_warn("<srpt_target_port_t addr>::walk srpt_scsi_session\n");
173 return (WALK_ERR);
174 }
175
176 wsp->walk_addr += offsetof(srpt_target_port_t, tp_sess_list);
177
178 if (mdb_layered_walk("list", wsp) == -1) {
179 mdb_warn("target session list walk failed");
180 return (WALK_ERR);
181 }
182 return (WALK_NEXT);
183 }
184
185 /*
186 * Walker to list the tasks in a session. The session is
187 * provided as input.
188 */
189 static int
srpt_task_walk_init(mdb_walk_state_t * wsp)190 srpt_task_walk_init(mdb_walk_state_t *wsp)
191 {
192 if (wsp->walk_addr == 0) {
193 mdb_warn("<srpt_session_t addr>::walk srpt_tasks\n");
194 return (WALK_ERR);
195 }
196
197 wsp->walk_addr += offsetof(srpt_session_t, ss_task_list);
198
199 if (mdb_layered_walk("list", wsp) == -1) {
200 mdb_warn("session task list walk failed");
201 return (WALK_ERR);
202 }
203 return (WALK_NEXT);
204 }
205
206 /* ARGSUSED */
207 static int
srpt_print_ioc(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)208 srpt_print_ioc(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
209 {
210 srpt_ioc_t ioc;
211 char mask[9];
212 int i;
213
214 if (addr == 0) {
215 mdb_warn("address of srpt_ioc should be specified\n");
216 return (DCMD_ERR);
217 }
218
219 if (mdb_vread(&ioc, sizeof (srpt_ioc_t), addr) == -1) {
220 mdb_warn("failed to read srpt_ioc at %p", addr);
221 return (DCMD_ERR);
222 }
223
224 mdb_printf("IOC %p\n", addr);
225 mdb_printf(" guid: %x\n", ioc.ioc_guid);
226 mdb_printf(" target port: %p\n", ioc.ioc_tgt_port);
227 mdb_printf(" srq handle: %p\n", ioc.ioc_srq_hdl);
228 mdb_printf(" current srq size: %u\n", ioc.ioc_num_iu_entries);
229 mdb_printf(" max srq size: %d\n", ioc.ioc_srq_attr.srq_wr_sz);
230 mdb_printf(" iu pool: %p\n", ioc.ioc_iu_pool);
231 mdb_printf(" profile send qdepth: %d\n",
232 SRPT_BSWAP_16(ioc.ioc_profile.ioc_send_msg_qdepth));
233 mdb_printf(" profile rmda read qdepth: %d\n",
234 ioc.ioc_profile.ioc_rdma_read_qdepth);
235 mdb_printf(" profile send msg size: %d\n",
236 SRPT_BSWAP_32(ioc.ioc_profile.ioc_send_msg_sz));
237 mdb_printf(" profile rmda xfer size: %d\n",
238 SRPT_BSWAP_32(ioc.ioc_profile.ioc_rdma_xfer_sz));
239 for (i = 0; i < 8; i++) {
240 if (ioc.ioc_profile.ioc_ctrl_opcap_mask & 1<<i) {
241 mask[i] = 'x';
242 } else {
243 mask[i] = '-';
244 }
245 }
246 mask[i] = '\0';
247 mdb_printf(" profile opcap mask: %s\n", mask);
248
249 return (DCMD_OK);
250 }
251
252 static const mdb_dcmd_t dcmds[] = {
253 { "srpt_print_ioc", ":", "Print information about an SRPT IOC",
254 srpt_print_ioc, NULL},
255 { NULL }
256 };
257
258 static const mdb_walker_t walkers[] = {
259 { "srpt_ioc", "Walk active IO controllers",
260 srpt_ioc_walk_init, srpt_list_walk_step, NULL},
261 { "srpt_tgt", "Walk the targets",
262 srpt_tgt_walk_init, srpt_tgt_walk_step, srpt_tgt_walk_fini},
263 { "srpt_channel", "Walk the channels",
264 srpt_channel_walk_init, srpt_list_walk_step, NULL},
265 { "srpt_scsi_session", "Walk the scsi sessions",
266 srpt_scsi_session_walk_init, srpt_list_walk_step, NULL},
267 { "srpt_tasks", "Walk the tasks in a scsi session",
268 srpt_task_walk_init, srpt_list_walk_step, NULL},
269 { NULL }
270 };
271
272 static const mdb_modinfo_t modinfo = {
273 MDB_API_VERSION, dcmds, walkers
274 };
275
276 const mdb_modinfo_t *
_mdb_init(void)277 _mdb_init(void)
278 {
279 return (&modinfo);
280 }
281