Date: Fri, 8 Nov 2019 01:13:12 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r354522 - head/sys/dev/cxgbe Message-ID: <201911080113.xA81DC5L032931@repo.freebsd.org>
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Author: np Date: Fri Nov 8 01:13:12 2019 New Revision: 354522 URL: https://svnweb.freebsd.org/changeset/base/354522 Log: cxgbe(4): Query Vdd from the firmware if its last known value is 0. TVSENSE may not be ready by the time t4_fw_initialize returns and the firmware returns 0 if the driver asks for the Vdd before the sensor is ready. MFC after: 1 week Sponsored by: Chelsio Communications Modified: head/sys/dev/cxgbe/t4_main.c Modified: head/sys/dev/cxgbe/t4_main.c ============================================================================== --- head/sys/dev/cxgbe/t4_main.c Fri Nov 8 00:01:37 2019 (r354521) +++ head/sys/dev/cxgbe/t4_main.c Fri Nov 8 01:13:12 2019 (r354522) @@ -656,6 +656,7 @@ static int sysctl_fec(SYSCTL_HANDLER_ARGS); static int sysctl_autoneg(SYSCTL_HANDLER_ARGS); static int sysctl_handle_t4_reg64(SYSCTL_HANDLER_ARGS); static int sysctl_temperature(SYSCTL_HANDLER_ARGS); +static int sysctl_vdd(SYSCTL_HANDLER_ARGS); static int sysctl_loadavg(SYSCTL_HANDLER_ARGS); static int sysctl_cctrl(SYSCTL_HANDLER_ARGS); static int sysctl_cim_ibq_obq(SYSCTL_HANDLER_ARGS); @@ -6153,8 +6154,8 @@ t4_sysctls(struct adapter *sc) CTLFLAG_RD, sc, 0, sysctl_loadavg, "A", "microprocessor load averages (debug firmwares only)"); - SYSCTL_ADD_INT(ctx, children, OID_AUTO, "core_vdd", CTLFLAG_RD, - &sc->params.core_vdd, 0, "core Vdd (in mV)"); + SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "core_vdd", CTLTYPE_INT | + CTLFLAG_RD, sc, 0, sysctl_vdd, "I", "core Vdd (in mV)"); SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "local_cpus", CTLTYPE_STRING | CTLFLAG_RD, sc, LOCAL_CPUS, @@ -7292,6 +7293,31 @@ sysctl_temperature(SYSCTL_HANDLER_ARGS) rc = sysctl_handle_int(oidp, &t, 0, req); return (rc); +} + +static int +sysctl_vdd(SYSCTL_HANDLER_ARGS) +{ + struct adapter *sc = arg1; + int rc; + uint32_t param, val; + + if (sc->params.core_vdd == 0) { + rc = begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, + "t4vdd"); + if (rc) + return (rc); + param = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | + V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_DIAG) | + V_FW_PARAMS_PARAM_Y(FW_PARAM_DEV_DIAG_VDD); + rc = -t4_query_params(sc, sc->mbox, sc->pf, 0, 1, ¶m, &val); + end_synchronized_op(sc, 0); + if (rc) + return (rc); + sc->params.core_vdd = val; + } + + return (sysctl_handle_int(oidp, &sc->params.core_vdd, 0, req)); } static int
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