186 lines
5.2 KiB
C
186 lines
5.2 KiB
C
/*-
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* Copyright (c) 2018 Netflix, Inc.
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* Written by: Scott Long <scottl@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/errno.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <err.h>
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#include <libutil.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "mpsutil.h"
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MPS_TABLE(top, debug);
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struct mps_dumpreq_hdr {
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uint32_t smid;
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uint32_t state;
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uint32_t numframes;
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uint32_t deschi;
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uint32_t desclo;
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};
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static int find_sgl(char *);
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static void print_sgl(char *, int, int);
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#define MPS_FRAME_LEN 128
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static int
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debug_dumpreqs(int ac, char **av)
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{
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struct mps_dumpreq_hdr *hdr;
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char *buf, sysctlbuf[128];
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size_t len;
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int numframes, error, offset;
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len = 0;
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buf = NULL;
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snprintf(sysctlbuf, sizeof(sysctlbuf), "dev.%s.%d.dump_reqs",
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is_mps ? "mps" : "mpr", mps_unit);
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error = sysctlbyname(sysctlbuf, NULL, &len, NULL, 0);
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if (error)
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return (error);
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if (len == 0)
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return (0);
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buf = malloc(len);
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if (buf == NULL)
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return (ENOMEM);
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error = sysctlbyname(sysctlbuf, buf, &len, NULL, 0);
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if (error) {
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printf("len= %zd, error= %d errno= %d\n", len, error, errno);
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return (error);
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}
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while (len >= MPS_FRAME_LEN) {
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hdr = (struct mps_dumpreq_hdr *)buf;
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numframes = hdr->numframes;
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printf("SMID= %d state= %#x numframes= %d desc.hi= %#08x "
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"desc.lo= %#08x\n", hdr->smid, hdr->state,
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hdr->numframes, hdr->deschi, hdr->desclo);
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buf += sizeof(struct mps_dumpreq_hdr);
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len -= sizeof(struct mps_dumpreq_hdr);
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if ((offset = find_sgl(buf)) != -1)
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print_sgl(buf, offset, numframes);
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buf += MPS_FRAME_LEN * numframes;
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len -= MPS_FRAME_LEN * numframes;
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}
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return (error);
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}
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static int
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find_sgl(char *buf)
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{
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MPI2_REQUEST_HEADER *req;
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MPI2_SCSI_IO_REQUEST *scsi;
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int offset = 0;
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req = (MPI2_REQUEST_HEADER *)buf;
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switch (req->Function) {
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case MPI2_FUNCTION_SCSI_IO_REQUEST:
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scsi = (MPI2_SCSI_IO_REQUEST *)buf;
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offset = scsi->SGLOffset0;
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break;
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default:
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offset = -1;
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}
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return (offset);
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}
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#define SGL_FLAGS "\10LastElement\7EndOfBuffer\4Local\3Host2IOC\2Addr64\1EndOfList"
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static void
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print_sgl(char *buf, int offset, int numframes)
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{
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MPI2_SGE_SIMPLE64 *sge;
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MPI2_SGE_CHAIN_UNION *sgc;
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u_int i = 0, flags;
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char *frame, tmpbuf[128];
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frame = (char *)buf;
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sge = (MPI2_SGE_SIMPLE64 *)&frame[offset * 4];
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printf("SGL for command\n");
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hexdump(frame, MPS_FRAME_LEN, NULL, 0);
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while (frame != NULL) {
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flags = sge->FlagsLength >> MPI2_SGE_FLAGS_SHIFT;
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bzero(tmpbuf, sizeof(tmpbuf));
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mps_parse_flags(flags, SGL_FLAGS, tmpbuf, sizeof(tmpbuf));
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printf("seg%d flags=%x %s len= 0x%06x addr=0x%016jx\n", i,
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flags, tmpbuf, sge->FlagsLength & 0xffffff,
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mps_to_u64(&sge->Address));
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if (flags & (MPI2_SGE_FLAGS_END_OF_LIST |
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MPI2_SGE_FLAGS_END_OF_BUFFER))
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break;
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sge++;
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i++;
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if (flags & MPI2_SGE_FLAGS_LAST_ELEMENT) {
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sgc = (MPI2_SGE_CHAIN_UNION *)sge;
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if ((sgc->Flags & MPI2_SGE_FLAGS_CHAIN_ELEMENT) == 0) {
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printf("Invalid chain element\n");
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break;
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}
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bzero(tmpbuf, sizeof(tmpbuf));
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mps_parse_flags(sgc->Flags, SGL_FLAGS, tmpbuf,
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sizeof(tmpbuf));
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if (sgc->Flags & MPI2_SGE_FLAGS_64_BIT_ADDRESSING)
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printf("chain64 flags=0x%x %s len=0x%x "
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"Offset=0x%x addr=0x%016jx\n", sgc->Flags,
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tmpbuf, sgc->Length, sgc->NextChainOffset,
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mps_to_u64(&sgc->u.Address64));
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else
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printf("chain32 flags=0x%x %s len=0x%x "
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"Offset=0x%x addr=0x%08x\n", sgc->Flags,
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tmpbuf, sgc->Length, sgc->NextChainOffset,
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sgc->u.Address32);
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if (--numframes <= 0)
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break;
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frame += MPS_FRAME_LEN;
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sge = (MPI2_SGE_SIMPLE64 *)frame;
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hexdump(frame, MPS_FRAME_LEN, NULL, 0);
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}
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}
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}
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MPS_COMMAND(debug, dumpreqs, debug_dumpreqs, "", "Dump the active request queue")
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