Author: jhibbits
Date: Tue May 22 03:57:32 2018
New Revision: 334015
URL: https://svnweb.freebsd.org/changeset/base/334015
Log:
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.
Added:
head/sys/powerpc/powernv/opal_ipmi.c (contents, props changed)
Modified:
head/sys/conf/files.powerpc
head/sys/powerpc/powernv/opal.h
Modified: head/sys/conf/files.powerpc
==============================================================================
--- head/sys/conf/files.powerpc Tue May 22 03:24:16 2018 (r334014)
+++ head/sys/conf/files.powerpc Tue May 22 03:57:32 2018 (r334015)
@@ -42,6 +42,7 @@ dev/iicbus/ds1631.c optional ds1631 powermac
dev/iicbus/ds1775.c optional ds1775 powermac
dev/iicbus/max6690.c optional max6690 powermac
dev/iicbus/ofw_iicbus.c optional iicbus aim
+dev/ipmi/ipmi.c optional ipmi
dev/nand/nfc_fsl.c optional nand mpc85xx
dev/nand/nfc_rb.c optional nand mpc85xx
# Most ofw stuff below is brought in by conf/files for options FDT, but
@@ -188,6 +189,7 @@ powerpc/powernv/opal_console.c optional powernv
powerpc/powernv/opal_dev.c optional powernv
powerpc/powernv/opal_i2c.c optional iicbus fdt powernv
powerpc/powernv/opal_i2cm.c optional iicbus fdt powernv
+powerpc/powernv/opal_ipmi.c optional powernv ipmi
powerpc/powernv/opal_pci.c optional powernv pci
powerpc/powernv/opal_sensor.c optional powernv
powerpc/powernv/opalcall.S optional powernv
Modified: head/sys/powerpc/powernv/opal.h
==============================================================================
--- head/sys/powerpc/powernv/opal.h Tue May 22 03:24:16 2018
(r334014)
+++ head/sys/powerpc/powernv/opal.h Tue May 22 03:57:32 2018
(r334015)
@@ -73,6 +73,8 @@ int opal_call(uint64_t token, ...);
#define OPAL_REINIT_CPUS 70
#define OPAL_CHECK_ASYNC_COMPLETION 86
#define OPAL_SENSOR_READ 88
+#define OPAL_IPMI_SEND 107
+#define OPAL_IPMI_RECV 108
#define OPAL_I2C_REQUEST 109
#define OPAL_INT_GET_XIRR 122
#define OPAL_INT_SET_CPPR 123
@@ -106,8 +108,12 @@ int opal_call(uint64_t token, ...);
#define OPAL_PARAMETER -1
#define OPAL_BUSY -2
#define OPAL_CLOSED -5
+#define OPAL_HARDWARE -6
+#define OPAL_UNSUPPORTED -7
+#define OPAL_RESOURCE -10
#define OPAL_BUSY_EVENT -12
#define OPAL_ASYNC_COMPLETION -15
+#define OPAL_EMPTY -16
struct opal_msg {
uint32_t msg_type;
@@ -125,6 +131,15 @@ enum opal_msg_type {
OPAL_MSG_PRD = 6,
OPAL_MSG_OCC = 7,
OPAL_MSG_TYPE_MAX,
+};
+
+#define OPAL_IPMI_MSG_FORMAT_VERSION_1 1
+
+struct opal_ipmi_msg {
+ uint8_t version;
+ uint8_t netfn;
+ uint8_t cmd;
+ uint8_t data[];
};
#endif
Added: head/sys/powerpc/powernv/opal_ipmi.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/powerpc/powernv/opal_ipmi.c Tue May 22 03:57:32 2018
(r334015)
@@ -0,0 +1,241 @@
+/*-
+ * Copyright (C) 2018 Justin Hibbits
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/systm.h>
+#include <sys/module.h>
+#include <sys/types.h>
+#include <sys/bus.h>
+#include <sys/kthread.h>
+#include <sys/proc.h>
+#include <sys/selinfo.h>
+#include <sys/sysctl.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <machine/bus.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <sys/ipmi.h>
+#include <dev/ipmi/ipmivars.h>
+
+#include "opal.h"
+
+struct opal_ipmi_softc {
+ struct ipmi_softc ipmi;
+ uint64_t sc_interface;
+ struct opal_ipmi_msg *sc_msg; /* Protected by IPMI lock */
+};
+
+static MALLOC_DEFINE(M_IPMI, "ipmi", "OPAL IPMI");
+
+static int
+opal_ipmi_polled_request(struct opal_ipmi_softc *sc, struct ipmi_request *req,
+ int timo)
+{
+ uint64_t msg_len;
+ int err;
+
+ /* Construct and send the message. */
+ sc->sc_msg->version = OPAL_IPMI_MSG_FORMAT_VERSION_1;
+ sc->sc_msg->netfn = req->ir_addr;
+ sc->sc_msg->cmd = req->ir_command;
+
+ if (req->ir_requestlen > IPMI_MAX_RX) {
+ err = ENOMEM;
+ goto out;
+ }
+ memcpy(sc->sc_msg->data, req->ir_request, req->ir_requestlen);
+
+ msg_len = sizeof(*sc->sc_msg) + req->ir_requestlen;
+ err = opal_call(OPAL_IPMI_SEND, sc->sc_interface, vtophys(sc->sc_msg),
+ msg_len);
+ switch (err) {
+ case OPAL_SUCCESS:
+ break;
+ case OPAL_PARAMETER:
+ err = EINVAL;
+ goto out;
+ case OPAL_HARDWARE:
+ err = EIO;
+ goto out;
+ case OPAL_UNSUPPORTED:
+ err = EINVAL;
+ goto out;
+ case OPAL_RESOURCE:
+ err = ENOMEM;
+ goto out;
+ }
+
+ timo *= 10; /* Timeout is in milliseconds, we delay in 100us */
+ do {
+ msg_len = sizeof(struct opal_ipmi_msg) + IPMI_MAX_RX;
+ err = opal_call(OPAL_IPMI_RECV, sc->sc_interface,
+ vtophys(sc->sc_msg), vtophys(&msg_len));
+ if (err != OPAL_EMPTY)
+ break;
+ DELAY(100);
+ } while (err == OPAL_EMPTY && timo-- != 0);
+
+ switch (err) {
+ case OPAL_SUCCESS:
+ /* Subtract one extra for the completion code. */
+ req->ir_replylen = msg_len - sizeof(struct opal_ipmi_msg) - 1;
+ req->ir_replylen = min(req->ir_replylen, req->ir_replybuflen);
+ memcpy(req->ir_reply, &sc->sc_msg->data[1], req->ir_replylen);
+ req->ir_compcode = sc->sc_msg->data[0];
+ break;
+ case OPAL_RESOURCE:
+ err = ENOMEM;
+ break;
+ case OPAL_EMPTY:
+ err = EAGAIN;
+ break;
+ default:
+ err = EIO;
+ break;
+ }
+
+out:
+
+ return (err);
+}
+
+static int
+opal_ipmi_probe(device_t dev)
+{
+ if (!ofw_bus_is_compatible(dev, "ibm,opal-ipmi"))
+ return (ENXIO);
+
+ device_set_desc(dev, "OPAL IPMI System Interface");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static void
+opal_ipmi_loop(void *arg)
+{
+ struct opal_ipmi_softc *sc = arg;
+ struct ipmi_request *req;
+ int i, ok;
+
+ IPMI_LOCK(&sc->ipmi);
+ while ((req = ipmi_dequeue_request(&sc->ipmi)) != NULL) {
+ IPMI_UNLOCK(&sc->ipmi);
+ ok = 0;
+ for (i = 0; i < 3 && !ok; i++) {
+ IPMI_IO_LOCK(&sc->ipmi);
+ ok = opal_ipmi_polled_request(sc, req, MAX_TIMEOUT);
+ IPMI_IO_UNLOCK(&sc->ipmi);
+ }
+ if (ok)
+ req->ir_error = 0;
+ else
+ req->ir_error = EIO;
+ IPMI_LOCK(&sc->ipmi);
+ ipmi_complete_request(&sc->ipmi, req);
+ }
+ IPMI_UNLOCK(&sc->ipmi);
+ kproc_exit(0);
+}
+
+static int
+opal_ipmi_startup(struct ipmi_softc *sc)
+{
+
+ return (kproc_create(opal_ipmi_loop, sc, &sc->ipmi_kthread, 0, 0,
+ "%s: opal", device_get_nameunit(sc->ipmi_dev)));
+}
+
+static int
+opal_ipmi_driver_request(struct ipmi_softc *isc, struct ipmi_request *req,
+ int timo)
+{
+ struct opal_ipmi_softc *sc = (struct opal_ipmi_softc *)isc;
+ int i, err;
+
+ for (i = 0; i < 3; i++) {
+ IPMI_LOCK(&sc->ipmi);
+ err = opal_ipmi_polled_request(sc, req, timo);
+ IPMI_UNLOCK(&sc->ipmi);
+ if (err == 0)
+ break;
+ }
+
+ req->ir_error = err;
+
+ return (err);
+}
+
+static int
+opal_ipmi_attach(device_t dev)
+{
+ struct opal_ipmi_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ if (OF_getencprop(ofw_bus_get_node(dev), "ibm,ipmi-interface-id",
+ (pcell_t*)&sc->sc_interface, sizeof(sc->sc_interface)) < 0) {
+ device_printf(dev, "Missing interface id\n");
+ return (ENXIO);
+ }
+ sc->ipmi.ipmi_startup = opal_ipmi_startup;
+ sc->ipmi.ipmi_driver_request = opal_ipmi_driver_request;
+ sc->ipmi.ipmi_dev = dev;
+
+ sc->sc_msg = malloc(sizeof(struct opal_ipmi_msg) + IPMI_MAX_RX, M_IPMI,
+ M_WAITOK | M_ZERO);
+
+ return (ipmi_attach(dev));
+}
+
+static int
+opal_ipmi_detach(device_t dev)
+{
+ return (EBUSY);
+}
+
+static device_method_t opal_ipmi_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, opal_ipmi_probe),
+ DEVMETHOD(device_attach, opal_ipmi_attach),
+ DEVMETHOD(device_detach, opal_ipmi_detach),
+ DEVMETHOD_END
+};
+
+static driver_t opal_ipmi_driver = {
+ "ipmi",
+ opal_ipmi_methods,
+ sizeof(struct opal_ipmi_softc)
+};
+
+DRIVER_MODULE(opal_ipmi, opal, opal_ipmi_driver, ipmi_devclass, NULL, NULL);
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