ipmi.c revision 989f28072d20c73ae0955d6a1e3e2fc74831cb39
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * All rights reserved.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Redistribution and use in source and binary forms, with or without
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * modification, are permitted provided that the following conditions
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * 1. Redistributions of source code must retain the above copyright
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * notice, this list of conditions and the following disclaimer.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * 2. Redistributions in binary form must reproduce the above copyright
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * notice, this list of conditions and the following disclaimer in the
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * documentation and/or other materials provided with the distribution.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * SUCH DAMAGE.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/* $FreeBSD: src/sys/dev/ipmi/ipmi.c,v 1.16 2011/11/07 15:43:11 ed Exp $ */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Copyright 2012, Joyent, Inc. All rights reserved.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Request management.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/* Allocate a new request with request and reply buffers. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekipmi_alloc_request(struct ipmi_device *dev, long msgid, uint8_t addr,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek uint8_t command, size_t requestlen, size_t replylen)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req = kmem_zalloc(sizeof (struct ipmi_request) + requestlen + replylen,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_sz = sizeof (struct ipmi_request) + requestlen + replylen;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_reply = (uchar_t *)&req[1] + requestlen;
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/* Free a request no longer in use. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek/* Store a processed request on the appropriate completion queue. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekipmi_complete_request(struct ipmi_softc *sc, struct ipmi_request *req)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Anonymous requests (from inside the driver) always have a
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * waiter that we awaken.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek TAILQ_INSERT_TAIL(&dev->ipmi_completed_requests, req, ir_link);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek pollwakeup(dev->ipmi_pollhead, POLLIN | POLLRDNORM);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Enqueue an internal driver request and wait until it is completed.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekipmi_submit_driver_request(struct ipmi_softc *sc, struct ipmi_request *req,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Wait for result - see ipmi_complete_request */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Helper routine for polled system interfaces that use
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * ipmi_polled_enqueue_request() to queue requests. This request
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * waits until there is a pending request and then returns the first
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * request. If the driver is shutting down, it returns NULL.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek while (!sc->ipmi_detaching && TAILQ_EMPTY(&sc->ipmi_pending_requests))
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cv_wait(&sc->ipmi_request_added, &sc->ipmi_lock);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req = TAILQ_FIRST(&sc->ipmi_pending_requests);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek TAILQ_REMOVE(&sc->ipmi_pending_requests, req, ir_link);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinekipmi_polled_enqueue_request(struct ipmi_softc *sc, struct ipmi_request *req)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek TAILQ_INSERT_TAIL(&sc->ipmi_pending_requests, req, ir_link);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek mutex_init(&slpmutex, NULL, MUTEX_DEFAULT, NULL);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Initialize interface-independent state. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek mutex_init(&sc->ipmi_lock, NULL, MUTEX_DEFAULT, NULL);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cv_init(&sc->ipmi_request_added, NULL, CV_DEFAULT, NULL);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Initialize interface-dependent state. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "Failed to initialize interface: %d", error);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Send a GET_DEVICE_ID request. */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek error = ipmi_submit_driver_request(sc, req, MAX_TIMEOUT);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "Timed out waiting for GET_DEVICE_ID");
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek } else if (error) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "Failed GET_DEVICE_ID: %d", error);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "Bad completion code for GET_DEVICE_ID: %d",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "Short reply for GET_DEVICE_ID: %d",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_CONT, "!device rev. %d, firmware rev. %d.%d%d, "
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek "version %d.%d",
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_reply[1] & 0x0f, req->ir_reply[2] & 0x7f,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_reply[3] >> 4, req->ir_reply[3] & 0x0f,
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req->ir_reply[4] & 0x0f, req->ir_reply[4] >> 4);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if ((error = ipmi_submit_driver_request(sc, req, 0)) != 0)
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "Failed to clear IPMI flags: %d\n", error);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* Magic numbers */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek for (i = 0; i < 8; i++) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if (ipmi_submit_driver_request(sc, req, 0) != 0) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_CONT, "!number of channels %d", i);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek /* probe for watchdog */
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek req = ipmi_alloc_driver_request(IPMI_ADDR(IPMI_APP_REQUEST, 0),
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek if ((error = ipmi_submit_driver_request(sc, req, 0)) != 0) {
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek cmn_err(CE_WARN, "Failed to check IPMI watchdog: %d\n", error);
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * Here is where we could register a watchdog event handler.
989f28072d20c73ae0955d6a1e3e2fc74831cb39Jerry Jelinek * See ipmi_wd_event() in the FreeBSD code.