2 * Copyright (c) 2018 Netflix, Inc.
4 * Written by: Scott Long <scottl@freebsd.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the author nor the names of any co-contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __RCSID("$FreeBSD: head/usr.sbin/mpsutil/mps_debug.c 330790 2018-03-12 05:03:32Z scottl $");
34 #include <sys/param.h>
35 #include <sys/errno.h>
36 #include <sys/types.h>
37 #include <sys/sysctl.h>
46 MPS_TABLE(top
, debug
);
48 struct mps_dumpreq_hdr
{
56 static int find_sgl(char *);
57 static void print_sgl(char *, int, int);
59 #define MPS_FRAME_LEN 128
62 debug_dumpreqs(int ac
, char **av
)
64 struct mps_dumpreq_hdr
*hdr
;
65 char *buf
, sysctlbuf
[128];
67 int numframes
, error
, offset
;
71 snprintf(sysctlbuf
, sizeof(sysctlbuf
), "dev.%s.%d.dump_reqs",
72 is_mps
? "mps" : "mpr", mps_unit
);
74 error
= sysctlbyname(sysctlbuf
, NULL
, &len
, NULL
, 0);
85 error
= sysctlbyname(sysctlbuf
, buf
, &len
, NULL
, 0);
87 printf("len= %zd, error= %d errno= %d\n", len
, error
, errno
);
91 while (len
>= MPS_FRAME_LEN
) {
92 hdr
= (struct mps_dumpreq_hdr
*)buf
;
93 numframes
= hdr
->numframes
;
95 printf("SMID= %d state= %#x numframes= %d desc.hi= %#08x "
96 "desc.lo= %#08x\n", hdr
->smid
, hdr
->state
,
97 hdr
->numframes
, hdr
->deschi
, hdr
->desclo
);
99 buf
+= sizeof(struct mps_dumpreq_hdr
);
100 len
-= sizeof(struct mps_dumpreq_hdr
);
102 if ((offset
= find_sgl(buf
)) != -1)
103 print_sgl(buf
, offset
, numframes
);
105 buf
+= MPS_FRAME_LEN
* numframes
;
106 len
-= MPS_FRAME_LEN
* numframes
;
115 MPI2_REQUEST_HEADER
*req
;
116 MPI2_SCSI_IO_REQUEST
*scsi
;
119 req
= (MPI2_REQUEST_HEADER
*)buf
;
121 switch (req
->Function
) {
122 case MPI2_FUNCTION_SCSI_IO_REQUEST
:
123 scsi
= (MPI2_SCSI_IO_REQUEST
*)buf
;
124 offset
= scsi
->SGLOffset0
;
133 #define SGL_FLAGS "\10LastElement\7EndOfBuffer\4Local\3Host2IOC\2Addr64\1EndOfList"
136 print_sgl(char *buf
, int offset
, int numframes
)
138 MPI2_SGE_SIMPLE64
*sge
;
139 MPI2_SGE_CHAIN_UNION
*sgc
;
140 MPI2_REQUEST_HEADER
*req
;
142 char *frame
, tmpbuf
[128];
144 req
= (MPI2_REQUEST_HEADER
*)buf
;
146 sge
= (MPI2_SGE_SIMPLE64
*)&frame
[offset
* 4];
147 printf("SGL for command\n");
149 hexdump(frame
, MPS_FRAME_LEN
, NULL
, 0);
150 while (frame
!= NULL
) {
151 flags
= sge
->FlagsLength
>> MPI2_SGE_FLAGS_SHIFT
;
152 bzero(tmpbuf
, sizeof(tmpbuf
));
153 mps_parse_flags(flags
, SGL_FLAGS
, tmpbuf
, sizeof(tmpbuf
));
154 printf("seg%d flags=%x %s len= 0x%06x addr=0x%016jx\n", i
,
155 flags
, tmpbuf
, sge
->FlagsLength
& 0xffffff,
156 mps_to_u64(&sge
->Address
));
157 if (flags
& (MPI2_SGE_FLAGS_END_OF_LIST
|
158 MPI2_SGE_FLAGS_END_OF_BUFFER
))
162 if (flags
& MPI2_SGE_FLAGS_LAST_ELEMENT
) {
163 sgc
= (MPI2_SGE_CHAIN_UNION
*)sge
;
164 if ((sgc
->Flags
& MPI2_SGE_FLAGS_CHAIN_ELEMENT
) == 0) {
165 printf("Invalid chain element\n");
168 bzero(tmpbuf
, sizeof(tmpbuf
));
169 mps_parse_flags(sgc
->Flags
, SGL_FLAGS
, tmpbuf
,
171 if (sgc
->Flags
& MPI2_SGE_FLAGS_64_BIT_ADDRESSING
)
172 printf("chain64 flags=0x%x %s len=0x%x "
173 "Offset=0x%x addr=0x%016jx\n", sgc
->Flags
,
174 tmpbuf
, sgc
->Length
, sgc
->NextChainOffset
,
175 mps_to_u64(&sgc
->u
.Address64
));
177 printf("chain32 flags=0x%x %s len=0x%x "
178 "Offset=0x%x addr=0x%08x\n", sgc
->Flags
,
179 tmpbuf
, sgc
->Length
, sgc
->NextChainOffset
,
181 if (--numframes
<= 0)
183 frame
+= MPS_FRAME_LEN
;
184 sge
= (MPI2_SGE_SIMPLE64
*)frame
;
185 hexdump(frame
, MPS_FRAME_LEN
, NULL
, 0);
190 MPS_COMMAND(debug
, dumpreqs
, debug_dumpreqs
, "", "Dump the active request queue")