git: e360f8c8fecc - stable/13 - mps/mpr: Add workaround for firmware not responding to IOC_FACTS or IOC_INIT
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Date: Wed, 16 Oct 2024 14:44:12 UTC
The branch stable/13 has been updated by imp: URL: https://cgit.FreeBSD.org/src/commit/?id=e360f8c8fecc78d8f2aa2aee46940ec5eca86c87 commit e360f8c8fecc78d8f2aa2aee46940ec5eca86c87 Author: prateek sethi <prateekrootkey@gmail.com> AuthorDate: 2024-10-13 18:38:54 +0000 Commit: Warner Losh <imp@FreeBSD.org> CommitDate: 2024-10-16 14:33:33 +0000 mps/mpr: Add workaround for firmware not responding to IOC_FACTS or IOC_INIT Sometimes, especially with older firmware, mps(4) would have trouble initializing the card in one of these two steps. Add in a retry after a short delay. Sean Bruno and Stephen McConnell thought this was OK in the bug discussions, but never committed it. Steve indicated the delay might not be necessary, but the OP clearly needed to make it longer to make things work. I've kept the delay, and added the suggested comment. Ported the iocfacts part to mpr as well, since we see similar errors about once every month or two over a few thousand controllers at work. We've not seen it with IOC_INIT as far back as I can query the error log database, so I didn't port that forward. We'll see if this helps, but won't know for sure until next year (so I'm committing it now since it won't hurt and might help). We usually see this failure in connection with complicated recovery operations with a drive that's failing, though, at least in the last year's worth of failures. It's not clear this is the same as OP or not. PR: 212841 Sponsored by: Netflix Co-authored-by: imp (cherry picked from commit c0e0e530ced057502f51d7a6086857305e08fae0) --- sys/dev/mpr/mpr.c | 23 ++++++++++++++++++----- sys/dev/mps/mps.c | 38 ++++++++++++++++++++++++++++++-------- 2 files changed, 48 insertions(+), 13 deletions(-) diff --git a/sys/dev/mpr/mpr.c b/sys/dev/mpr/mpr.c index f042f71825b5..f87b55c3dba5 100644 --- a/sys/dev/mpr/mpr.c +++ b/sys/dev/mpr/mpr.c @@ -1195,7 +1195,7 @@ mpr_get_iocfacts(struct mpr_softc *sc, MPI2_IOC_FACTS_REPLY *facts) { MPI2_DEFAULT_REPLY *reply; MPI2_IOC_FACTS_REQUEST request; - int error, req_sz, reply_sz; + int error, req_sz, reply_sz, retry = 0; MPR_FUNCTRACE(sc); mpr_dprint(sc, MPR_INIT, "%s entered\n", __func__); @@ -1204,13 +1204,26 @@ mpr_get_iocfacts(struct mpr_softc *sc, MPI2_IOC_FACTS_REPLY *facts) reply_sz = sizeof(MPI2_IOC_FACTS_REPLY); reply = (MPI2_DEFAULT_REPLY *)facts; + /* + * Retry sending the initialization sequence. Sometimes, especially with + * older firmware, the initialization process fails. Retrying allows the + * error to clear in the firmware. + */ bzero(&request, req_sz); request.Function = MPI2_FUNCTION_IOC_FACTS; - error = mpr_request_sync(sc, &request, reply, req_sz, reply_sz, 5); - - adjust_iocfacts_endianness(facts); - mpr_dprint(sc, MPR_TRACE, "facts->IOCCapabilities 0x%x\n", facts->IOCCapabilities); + while (retry < 5) { + error = mpr_request_sync(sc, &request, reply, req_sz, reply_sz, 5); + if (error == 0) + break; + mpr_dprint(sc, MPR_FAULT, "%s failed retry %d\n", __func__, retry); + DELAY(1000); + retry++; + } + if (error == 0) { + adjust_iocfacts_endianness(facts); + mpr_dprint(sc, MPR_TRACE, "facts->IOCCapabilities 0x%x\n", facts->IOCCapabilities); + } mpr_dprint(sc, MPR_INIT, "%s exit, error= %d\n", __func__, error); return (error); } diff --git a/sys/dev/mps/mps.c b/sys/dev/mps/mps.c index ca037071c298..33b64fe7f9cf 100644 --- a/sys/dev/mps/mps.c +++ b/sys/dev/mps/mps.c @@ -1127,7 +1127,7 @@ mps_get_iocfacts(struct mps_softc *sc, MPI2_IOC_FACTS_REPLY *facts) { MPI2_DEFAULT_REPLY *reply; MPI2_IOC_FACTS_REQUEST request; - int error, req_sz, reply_sz; + int error, req_sz, reply_sz, retry = 0; MPS_FUNCTRACE(sc); mps_dprint(sc, MPS_INIT, "%s entered\n", __func__); @@ -1136,10 +1136,21 @@ mps_get_iocfacts(struct mps_softc *sc, MPI2_IOC_FACTS_REPLY *facts) reply_sz = sizeof(MPI2_IOC_FACTS_REPLY); reply = (MPI2_DEFAULT_REPLY *)facts; + /* + * Retry sending the initialization sequence. Sometimes, especially with + * older firmware, the initialization process fails. Retrying allows the + * error to clear in the firmware. + */ bzero(&request, req_sz); request.Function = MPI2_FUNCTION_IOC_FACTS; - error = mps_request_sync(sc, &request, reply, req_sz, reply_sz, 5); - mps_dprint(sc, MPS_INIT, "%s exit error= %d\n", __func__, error); + while (retry < 5) { + error = mps_request_sync(sc, &request, reply, req_sz, reply_sz, 5); + if (error == 0) + break; + mps_dprint(sc, MPS_FAULT, "%s failed retry %d\n", __func__, retry); + DELAY(1000); + retry++; + } return (error); } @@ -1149,7 +1160,7 @@ mps_send_iocinit(struct mps_softc *sc) { MPI2_IOC_INIT_REQUEST init; MPI2_DEFAULT_REPLY reply; - int req_sz, reply_sz, error; + int req_sz, reply_sz, error, retry = 0; struct timeval now; uint64_t time_in_msec; @@ -1193,10 +1204,21 @@ mps_send_iocinit(struct mps_softc *sc) time_in_msec = (now.tv_sec * 1000 + now.tv_usec/1000); init.TimeStamp.High = htole32((time_in_msec >> 32) & 0xFFFFFFFF); init.TimeStamp.Low = htole32(time_in_msec & 0xFFFFFFFF); - - error = mps_request_sync(sc, &init, &reply, req_sz, reply_sz, 5); - if ((reply.IOCStatus & MPI2_IOCSTATUS_MASK) != MPI2_IOCSTATUS_SUCCESS) - error = ENXIO; + /* + * Retry sending the initialization sequence. Sometimes, especially with + * older firmware, the initialization process fails. Retrying allows the + * error to clear in the firmware. + */ + while (retry < 5) { + error = mps_request_sync(sc, &init, &reply, req_sz, reply_sz, 5); + if ((reply.IOCStatus & MPI2_IOCSTATUS_MASK) != MPI2_IOCSTATUS_SUCCESS) + error = ENXIO; + if (error == 0) + break; + mps_dprint(sc, MPS_FAULT, "%s failed retry %d\n", __func__, retry); + DELAY(1000); + retry++; + } mps_dprint(sc, MPS_INIT, "IOCInit status= 0x%x\n", reply.IOCStatus); mps_dprint(sc, MPS_INIT, "%s exit\n", __func__);