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
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
77 srpt_list_walk_step(mdb_walk_state_t *wsp)
78 {
79 	if (wsp->walk_addr == NULL) {
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
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 == NULL) {
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
115 srpt_tgt_walk_step(mdb_walk_state_t *wsp)
116 {
117 	if (wsp->walk_addr == NULL) {
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
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
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 == NULL) {
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
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 == NULL) {
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
190 srpt_task_walk_init(mdb_walk_state_t *wsp)
191 {
192 	if (wsp->walk_addr == NULL) {
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
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 == NULL) {
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 *
277 _mdb_init(void)
278 {
279 	return (&modinfo);
280 }
281