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