Add an IPMI attachment for PowerNV systems
IPMI access on PowerNV systems is done through the OPAL firmware. This adds a simple attachment for communicating with the FSP/BMC on these machines. This has been tested on a Talos POWER9 workstation, only in the bootup phase, noting the successful attachment messages: ... ipmi0: IPMI device rev. 0, firmware rev. 2.00, version 2.0, device support mask 0 ipmi0: Number of channels 2 ... The ipmi device has not been added to GENERIC64, but may be after further testing. It may also eventually be added to the ipmi module at that point.
This commit is contained in:
parent
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commit
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=334015
@ -42,6 +42,7 @@ dev/iicbus/ds1631.c optional ds1631 powermac
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dev/iicbus/ds1775.c optional ds1775 powermac
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dev/iicbus/max6690.c optional max6690 powermac
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dev/iicbus/ofw_iicbus.c optional iicbus aim
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dev/ipmi/ipmi.c optional ipmi
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dev/nand/nfc_fsl.c optional nand mpc85xx
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dev/nand/nfc_rb.c optional nand mpc85xx
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# Most ofw stuff below is brought in by conf/files for options FDT, but
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@ -188,6 +189,7 @@ powerpc/powernv/opal_console.c optional powernv
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powerpc/powernv/opal_dev.c optional powernv
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powerpc/powernv/opal_i2c.c optional iicbus fdt powernv
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powerpc/powernv/opal_i2cm.c optional iicbus fdt powernv
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powerpc/powernv/opal_ipmi.c optional powernv ipmi
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powerpc/powernv/opal_pci.c optional powernv pci
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powerpc/powernv/opal_sensor.c optional powernv
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powerpc/powernv/opalcall.S optional powernv
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@ -73,6 +73,8 @@ int opal_call(uint64_t token, ...);
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#define OPAL_REINIT_CPUS 70
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#define OPAL_CHECK_ASYNC_COMPLETION 86
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#define OPAL_SENSOR_READ 88
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#define OPAL_IPMI_SEND 107
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#define OPAL_IPMI_RECV 108
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#define OPAL_I2C_REQUEST 109
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#define OPAL_INT_GET_XIRR 122
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#define OPAL_INT_SET_CPPR 123
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@ -106,8 +108,12 @@ int opal_call(uint64_t token, ...);
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#define OPAL_PARAMETER -1
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#define OPAL_BUSY -2
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#define OPAL_CLOSED -5
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#define OPAL_HARDWARE -6
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#define OPAL_UNSUPPORTED -7
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#define OPAL_RESOURCE -10
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#define OPAL_BUSY_EVENT -12
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#define OPAL_ASYNC_COMPLETION -15
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#define OPAL_EMPTY -16
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struct opal_msg {
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uint32_t msg_type;
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@ -127,4 +133,13 @@ enum opal_msg_type {
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OPAL_MSG_TYPE_MAX,
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};
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#define OPAL_IPMI_MSG_FORMAT_VERSION_1 1
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struct opal_ipmi_msg {
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uint8_t version;
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uint8_t netfn;
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uint8_t cmd;
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uint8_t data[];
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};
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#endif
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241
sys/powerpc/powernv/opal_ipmi.c
Normal file
241
sys/powerpc/powernv/opal_ipmi.c
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@ -0,0 +1,241 @@
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/*-
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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/module.h>
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#include <sys/types.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 "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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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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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_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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return (EBUSY);
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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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