/* $OpenBSD: ipmi_opal.c,v 1.4 2024/10/09 00:38:26 jsg Exp $ */ /* * Copyright (c) 2020 Mark Kettenis * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include struct ipmi_opal_softc { struct ipmi_softc sc; int sc_id; }; void ipmi_opal_buildmsg(struct ipmi_cmd *); int ipmi_opal_sendmsg(struct ipmi_cmd *); int ipmi_opal_recvmsg(struct ipmi_cmd *); int ipmi_opal_reset(struct ipmi_softc *); int ipmi_opal_probe(struct ipmi_softc *); #define IPMI_OPALMSG_VERSION 0 #define IPMI_OPALMSG_NFLN 1 #define IPMI_OPALMSG_CMD 2 #define IPMI_OPALMSG_CCODE 3 #define IPMI_OPALMSG_DATASND 3 #define IPMI_OPALMSG_DATARCV 4 struct ipmi_if opal_if = { "OPAL", 0, ipmi_opal_buildmsg, ipmi_opal_sendmsg, ipmi_opal_recvmsg, ipmi_opal_reset, ipmi_opal_probe, IPMI_OPALMSG_DATASND, IPMI_OPALMSG_DATARCV }; int ipmi_opal_match(struct device *, void *, void *); void ipmi_opal_attach(struct device *, struct device *, void *); const struct cfattach ipmi_opal_ca = { sizeof (struct ipmi_opal_softc), ipmi_opal_match, ipmi_opal_attach, NULL, ipmi_activate }; int ipmi_opal_match(struct device *parent, void *match, void *aux) { struct fdt_attach_args *faa = aux; return OF_is_compatible(faa->fa_node, "ibm,opal-ipmi"); } void ipmi_opal_attach(struct device *parent, struct device *self, void *aux) { struct ipmi_opal_softc *sc = (struct ipmi_opal_softc *)self; struct fdt_attach_args *faa = aux; struct ipmi_attach_args iaa; uint64_t size; int64_t error; sc->sc.sc_if = &opal_if; sc->sc_id = OF_getpropint(faa->fa_node, "ibm,ipmi-interface-id", 0); /* Clear IPMI message queue. */ do { size = sizeof(sc->sc.sc_buf); error = opal_ipmi_recv(sc->sc_id, opal_phys(sc->sc.sc_buf), opal_phys(&size)); } while (error == OPAL_SUCCESS); memset(&iaa, 0, sizeof(iaa)); iaa.iaa_if_type = IPMI_IF_SSIF; iaa.iaa_if_rev = 0x20; iaa.iaa_if_irq = -1; ipmi_attach_common(&sc->sc, &iaa); } #define RSSA_MASK 0xff #define LUN_MASK 0x3 #define NETFN_LUN(nf,ln) (((nf) << 2) | ((ln) & LUN_MASK)) void ipmi_opal_buildmsg(struct ipmi_cmd *c) { struct ipmi_softc *sc = c->c_sc; struct opal_ipmi_msg *msg = (struct opal_ipmi_msg *)sc->sc_buf; msg->version = OPAL_IPMI_MSG_FORMAT_VERSION_1; msg->netfn = NETFN_LUN(c->c_netfn, c->c_rslun); msg->cmd = c->c_cmd; if (c->c_txlen && c->c_data) memcpy(msg->data, c->c_data, c->c_txlen); } int ipmi_opal_sendmsg(struct ipmi_cmd *c) { struct ipmi_opal_softc *sc = (struct ipmi_opal_softc *)c->c_sc; int64_t error; error = opal_ipmi_send(sc->sc_id, opal_phys(sc->sc.sc_buf), c->c_txlen); return (error == OPAL_SUCCESS ? 0 : -1); } int ipmi_opal_recvmsg(struct ipmi_cmd *c) { struct ipmi_opal_softc *sc = (struct ipmi_opal_softc *)c->c_sc; struct opal_ipmi_msg *msg = (struct opal_ipmi_msg *)sc->sc.sc_buf; uint64_t size = sizeof(sc->sc.sc_buf); int64_t error; int timo; msg->version = OPAL_IPMI_MSG_FORMAT_VERSION_1; for (timo = 1000; timo > 0; timo--) { error = opal_ipmi_recv(sc->sc_id, opal_phys(sc->sc.sc_buf), opal_phys(&size)); if (error != OPAL_EMPTY) break; tsleep_nsec(sc, PWAIT, "ipmi", MSEC_TO_NSEC(1)); opal_poll_events(NULL); } if (error == OPAL_SUCCESS) { if (msg->version != OPAL_IPMI_MSG_FORMAT_VERSION_1) return -1; sc->sc.sc_buf[IPMI_MSG_NFLN] = msg->netfn; sc->sc.sc_buf[IPMI_MSG_CMD] = msg->cmd; sc->sc.sc_buf[IPMI_MSG_CCODE] = msg->data[0]; c->c_rxlen = MIN(size, c->c_maxrxlen); } return (error == OPAL_SUCCESS ? 0 : -1); } int ipmi_opal_reset(struct ipmi_softc *sc) { return -1; } int ipmi_opal_probe(struct ipmi_softc *sc) { return 0; }