250e158ddf
This allows replacing "sys/eventfilter.h" includes with "sys/_eventfilter.h"
in other header files (e.g., sys/{bus,conf,cpu}.h) and reduces header
pollution substantially.
EVENTHANDLER_DECLARE and EVENTHANDLER_LIST_DECLAREs were moved out of .c
files into appropriate headers (e.g., sys/proc.h, powernv/opal.h).
As a side effect of reduced header pollution, many .c files and headers no
longer contain needed definitions. The remainder of the patch addresses
adding appropriate includes to fix those files.
LOCK_DEBUG and LOCK_FILE_LINE_ARG are moved to sys/_lock.h, as required by
sys/mutex.h since r326106 (but silently protected by header pollution prior
to this change).
No functional change (intended). Of course, any out of tree modules that
relied on header pollution for sys/eventhandler.h, sys/lock.h, or
sys/mutex.h inclusion need to be fixed. __FreeBSD_version has been bumped.
256 lines
6.2 KiB
C
256 lines
6.2 KiB
C
/*-
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* Copyright (C) 2018 Justin Hibbits
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/bus.h>
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#include <sys/kthread.h>
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#include <sys/proc.h>
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#include <sys/selinfo.h>
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#include <sys/sysctl.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/bus.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <sys/ipmi.h>
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#include <dev/ipmi/ipmivars.h>
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#include <powerpc/powernv/opal.h>
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struct opal_ipmi_softc {
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struct ipmi_softc ipmi;
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uint64_t sc_interface;
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struct opal_ipmi_msg *sc_msg; /* Protected by IPMI lock */
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};
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static MALLOC_DEFINE(M_IPMI, "ipmi", "OPAL IPMI");
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static int
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opal_ipmi_polled_request(struct opal_ipmi_softc *sc, struct ipmi_request *req,
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int timo)
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{
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uint64_t msg_len;
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int err;
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/* Construct and send the message. */
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sc->sc_msg->version = OPAL_IPMI_MSG_FORMAT_VERSION_1;
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sc->sc_msg->netfn = req->ir_addr;
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sc->sc_msg->cmd = req->ir_command;
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if (req->ir_requestlen > IPMI_MAX_RX) {
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err = ENOMEM;
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goto out;
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}
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memcpy(sc->sc_msg->data, req->ir_request, req->ir_requestlen);
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msg_len = sizeof(*sc->sc_msg) + req->ir_requestlen;
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err = opal_call(OPAL_IPMI_SEND, sc->sc_interface, vtophys(sc->sc_msg),
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msg_len);
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switch (err) {
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case OPAL_SUCCESS:
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break;
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case OPAL_PARAMETER:
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err = EINVAL;
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goto out;
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case OPAL_HARDWARE:
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err = EIO;
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goto out;
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case OPAL_UNSUPPORTED:
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err = EINVAL;
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goto out;
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case OPAL_RESOURCE:
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err = ENOMEM;
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goto out;
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}
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timo *= 10; /* Timeout is in milliseconds, we delay in 100us */
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do {
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msg_len = sizeof(struct opal_ipmi_msg) + IPMI_MAX_RX;
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/* Crank the OPAL state machine while we poll for a reply. */
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opal_call(OPAL_POLL_EVENTS, NULL);
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err = opal_call(OPAL_IPMI_RECV, sc->sc_interface,
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vtophys(sc->sc_msg), vtophys(&msg_len));
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if (err != OPAL_EMPTY)
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break;
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DELAY(100);
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} while (err == OPAL_EMPTY && timo-- != 0);
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switch (err) {
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case OPAL_SUCCESS:
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/* Subtract one extra for the completion code. */
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req->ir_replylen = msg_len - sizeof(struct opal_ipmi_msg) - 1;
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req->ir_replylen = min(req->ir_replylen, req->ir_replybuflen);
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memcpy(req->ir_reply, &sc->sc_msg->data[1], req->ir_replylen);
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req->ir_compcode = sc->sc_msg->data[0];
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err = 0;
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break;
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case OPAL_RESOURCE:
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err = ENOMEM;
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break;
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case OPAL_EMPTY:
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err = EAGAIN;
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break;
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default:
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err = EIO;
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break;
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}
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out:
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return (err);
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}
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static int
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opal_ipmi_probe(device_t dev)
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{
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if (!ofw_bus_is_compatible(dev, "ibm,opal-ipmi"))
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return (ENXIO);
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device_set_desc(dev, "OPAL IPMI System Interface");
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return (BUS_PROBE_DEFAULT);
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}
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static void
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opal_ipmi_loop(void *arg)
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{
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struct opal_ipmi_softc *sc = arg;
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struct ipmi_request *req;
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int i, ok;
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IPMI_LOCK(&sc->ipmi);
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while ((req = ipmi_dequeue_request(&sc->ipmi)) != NULL) {
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IPMI_UNLOCK(&sc->ipmi);
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ok = 0;
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for (i = 0; i < 3 && !ok; i++) {
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IPMI_IO_LOCK(&sc->ipmi);
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ok = opal_ipmi_polled_request(sc, req, MAX_TIMEOUT);
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IPMI_IO_UNLOCK(&sc->ipmi);
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}
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if (ok)
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req->ir_error = 0;
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else
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req->ir_error = EIO;
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IPMI_LOCK(&sc->ipmi);
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ipmi_complete_request(&sc->ipmi, req);
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}
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IPMI_UNLOCK(&sc->ipmi);
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kproc_exit(0);
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}
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static int
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opal_ipmi_startup(struct ipmi_softc *sc)
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{
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return (kproc_create(opal_ipmi_loop, sc, &sc->ipmi_kthread, 0, 0,
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"%s: opal", device_get_nameunit(sc->ipmi_dev)));
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}
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static int
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opal_ipmi_driver_request(struct ipmi_softc *isc, struct ipmi_request *req,
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int timo)
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{
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struct opal_ipmi_softc *sc = (struct opal_ipmi_softc *)isc;
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int i, err;
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for (i = 0; i < 3; i++) {
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IPMI_LOCK(&sc->ipmi);
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err = opal_ipmi_polled_request(sc, req, timo);
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IPMI_UNLOCK(&sc->ipmi);
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if (err == 0)
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break;
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}
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req->ir_error = err;
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return (err);
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}
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static int
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opal_ipmi_attach(device_t dev)
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{
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struct opal_ipmi_softc *sc;
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sc = device_get_softc(dev);
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if (OF_getencprop(ofw_bus_get_node(dev), "ibm,ipmi-interface-id",
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(pcell_t*)&sc->sc_interface, sizeof(sc->sc_interface)) < 0) {
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device_printf(dev, "Missing interface id\n");
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return (ENXIO);
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}
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sc->ipmi.ipmi_startup = opal_ipmi_startup;
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sc->ipmi.ipmi_driver_request = opal_ipmi_driver_request;
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sc->ipmi.ipmi_enqueue_request = ipmi_polled_enqueue_request;
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sc->ipmi.ipmi_driver_requests_polled = 1;
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sc->ipmi.ipmi_dev = dev;
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sc->sc_msg = malloc(sizeof(struct opal_ipmi_msg) + IPMI_MAX_RX, M_IPMI,
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M_WAITOK | M_ZERO);
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return (ipmi_attach(dev));
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}
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static int
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opal_ipmi_detach(device_t dev)
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{
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struct opal_ipmi_softc *sc;
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int err;
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sc = device_get_softc(dev);
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err = ipmi_detach(dev);
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if (err == 0)
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free(sc->sc_msg, M_IPMI);
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return (err);
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}
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static device_method_t opal_ipmi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, opal_ipmi_probe),
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DEVMETHOD(device_attach, opal_ipmi_attach),
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DEVMETHOD(device_detach, opal_ipmi_detach),
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DEVMETHOD_END
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};
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static driver_t opal_ipmi_driver = {
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"ipmi",
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opal_ipmi_methods,
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sizeof(struct opal_ipmi_softc)
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};
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DRIVER_MODULE(opal_ipmi, opal, opal_ipmi_driver, ipmi_devclass, NULL, NULL);
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