diff options
Diffstat (limited to 'meta-facebook/meta-wedge/recipes-wedge/sms-kcsd')
4 files changed, 216 insertions, 0 deletions
diff --git a/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/Makefile b/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/Makefile new file mode 100644 index 0000000..6425261 --- /dev/null +++ b/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/Makefile @@ -0,0 +1,10 @@ +# Copyright 2014-present Facebook. All Rights Reserved. +all: sms-kcsd + +sms-kcsd: sms-kcsd.c + $(CC) -pthread -lalert_control -lipmi -std=c99 -o $@ $^ $(LDFLAGS) + +.PHONY: clean + +clean: + rm -rf *.o sms-kcsd diff --git a/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/setup-sms-kcs.sh b/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/setup-sms-kcs.sh new file mode 100644 index 0000000..d369f5c --- /dev/null +++ b/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/setup-sms-kcs.sh @@ -0,0 +1,16 @@ +#!/bin/sh +# +# Copyright 2014-present Facebook. All Rights Reserved. +# +### BEGIN INIT INFO +# Provides: setup-sms-kcs +# Required-Start: +# Required-Stop: +# Default-Start: S +# Default-Stop: +# Short-Description: Set SMS KCS handler +### END INIT INFO + +echo -n "Setup SMS KCS message handler... " +/usr/local/bin/sms-kcsd +echo "done." diff --git a/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/sms-kcsd.c b/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/sms-kcsd.c new file mode 100644 index 0000000..a264fb7 --- /dev/null +++ b/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd/sms-kcsd.c @@ -0,0 +1,144 @@ +/* + * sms-kcsd + * + * Copyright 2014-present Facebook. All Rights Reserved. + * + * Daemon to monitor traffic coming from sms-kcs interface + * and respond to the command using IPMI stack + * + * TODO: Determine if the daemon is already started. + * TODO: Cache the file descriptors instead of fopen/fclose everytime + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#include <syslog.h> +#include <facebook/alert_control.h> +#include <facebook/ipmi.h> + + +#define PATH_SMS_KCS "/sys/bus/i2c/drivers/panther_plus/4-0040/sms_kcs" +#define MAX_ALERT_CONTROL_RETRIES 3 + +typedef struct { + unsigned char fbid; + unsigned char length; + unsigned char buf[]; +} kcs_msg_t; + +/* + * Function to check if there is any new KCS message available + * TODO: Will be replaced by interrupt-driven approach + */ +static bool +is_new_kcs_msg(void) { + return is_alert_present(FBID_SMS_KCS); +} + +/* + * KCS Message Handler: + * - Reads the incoming request on KCS channel + * - Invokes IPMI handler to provide response + * - Writes reply back to KCS channel + */ +static int +handle_kcs_msg(void) { + FILE *fp; + kcs_msg_t *msg; + unsigned char rbuf[256] = {0}; + unsigned char tbuf[256] = {0}; + unsigned char tlen = 0; + int count = 0; + int i = 0; + + // Reads incoming request + fp = fopen(PATH_SMS_KCS, "r"); + if (!fp) { + syslog(LOG_ALERT, "failed to open file %s\n", PATH_SMS_KCS); + return -1; + } + + count = fread(rbuf, sizeof(unsigned char), sizeof(rbuf), fp); + if (count == 0) { + syslog(LOG_INFO, "fread returns zero bytes\n"); + fclose(fp); + return -1; + } + + fclose(fp); + + msg = (kcs_msg_t*)rbuf; + + // Invoke IPMI handler + ipmi_handle(msg->buf, msg->length, &tbuf[1], &tlen); + + // Fill the length as returned by IPMI stack + tbuf[0] = tlen; + + //Write Reply back to KCS channel + fp = fopen(PATH_SMS_KCS, "w"); + if (!fp) { + syslog(LOG_ALERT, "failed to open file %s\n", PATH_SMS_KCS); + return -1; + } + + count = fwrite(tbuf, sizeof(unsigned char), tlen+1, fp); + if (count != tlen+1) { + syslog(LOG_ALERT, "fwrite returns: %d, expected: %d\n", count, tlen+1); + fclose(fp); + return -1; + } + + fclose(fp); + + return 0; +} + +/* + * Daemon Main loop + */ +int main(int argc, char **argv) { + int i; + int ret; + daemon(1, 0); + openlog("sms-kcs", LOG_CONS, LOG_DAEMON); + + // Enable alert for SMS KCS Function Block + for (i = 0; i < MAX_ALERT_CONTROL_RETRIES; i++) { + ret = alert_control(FBID_SMS_KCS, FLAG_ENABLE); + if (!ret) { + break; + } + sleep(2); + } + + // Exit with error in case we can not set the Alert + if(ret) { + syslog(LOG_ALERT, "Can not enable SMS KCS Alert\n"); + exit(-1); + } + + // Forever loop to poll and process KCS messages + while (1) { + if (is_new_kcs_msg()) { + handle_kcs_msg(); + } + sleep(1); + } +} diff --git a/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd_0.1.bb b/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd_0.1.bb new file mode 100644 index 0000000..1f3ea08 --- /dev/null +++ b/meta-facebook/meta-wedge/recipes-wedge/sms-kcsd/sms-kcsd_0.1.bb @@ -0,0 +1,46 @@ +# Copyright 2014-present Facebook. All Rights Reserved. +SUMMARY = "SMS KCS Daemon" +DESCRIPTION = "Daemon to handle SMS KCS interface." +SECTION = "base" +PR = "r1" +LICENSE = "GPLv2" +LIC_FILES_CHKSUM = "file://sms-kcsd.c;beginline=12;endline=24;md5=da35978751a9d71b73679307c4d296ec" + + +DEPENDS_append = " update-rc.d-native" + +DEPENDS += "libalert-control" +DEPENDS += "libipmi" + +SRC_URI = "file://Makefile \ + file://setup-sms-kcs.sh \ + file://sms-kcsd.c \ + " + +S = "${WORKDIR}" + +binfiles = "sms-kcsd" + +pkgdir = "sms-kcsd" + +do_install() { + dst="${D}/usr/local/fbpackages/${pkgdir}" + bin="${D}/usr/local/bin" + install -d $dst + install -d $bin + install -m 755 sms-kcsd ${dst}/sms-kcsd + ln -snf ../fbpackages/${pkgdir}/sms-kcsd ${bin}/sms-kcsd + install -d ${D}${sysconfdir}/init.d + install -d ${D}${sysconfdir}/rcS.d + install -m 755 setup-sms-kcs.sh ${D}${sysconfdir}/init.d/setup-sms-kcs.sh + update-rc.d -r ${D} setup-sms-kcs.sh start 65 S . +} + +FBPACKAGEDIR = "${prefix}/local/fbpackages" + +FILES_${PN} = "${FBPACKAGEDIR}/sms-kcsd ${prefix}/local/bin ${sysconfdir} " + +# Inhibit complaints about .debug directories for the fand binary: + +INHIBIT_PACKAGE_DEBUG_SPLIT = "1" +INHIBIT_PACKAGE_STRIP = "1" |
