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Tue, 2 Apr 2019 04:12:07 GMT (envelope-from jhibbits@FreeBSD.org) Message-Id: <201904020412.x324C7q8084524@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhibbits set sender to jhibbits@FreeBSD.org using -f From: Justin Hibbits To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r345791 - head/sys/dev/ipmi X-SVN-Group: head X-SVN-Commit-Author: jhibbits X-SVN-Commit-Paths: head/sys/dev/ipmi X-SVN-Commit-Revision: 345791 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk X-Loop: FreeBSD.org Sender: owner-src-committers@freebsd.org X-Rspamd-Queue-Id: 329F57139E X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.94 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_SHORT(-0.94)[-0.941,0]; ASN(0.00)[asn:11403, ipnet:96.47.64.0/20, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] Status: O X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 03 Sep 2019 14:06:09 -0000 X-Original-Date: Tue, 2 Apr 2019 04:12:07 +0000 (UTC) X-List-Received-Date: Tue, 03 Sep 2019 14:06:09 -0000 Author: jhibbits Date: Tue Apr 2 04:12:06 2019 New Revision: 345791 URL: https://svnweb.freebsd.org/changeset/base/345791 Log: ipmi: Fixes for ipmi_opal(powernv) * Crank the OPAL state machine during the receive loop, to make sure the pollers are executed * Add a proper detach function, so the module can be unloaded and reloaded at runtime. It still doesn't reliably work 100% of the time on POWER9, and it appears timing and/or cache related. It may work on POWER8 now. MFC after: 2 weeks Modified: head/sys/dev/ipmi/ipmi_opal.c Modified: head/sys/dev/ipmi/ipmi_opal.c ============================================================================== --- head/sys/dev/ipmi/ipmi_opal.c Tue Apr 2 04:02:57 2019 (r345790) +++ head/sys/dev/ipmi/ipmi_opal.c Tue Apr 2 04:12:06 2019 (r345791) @@ -99,6 +99,8 @@ opal_ipmi_polled_request(struct opal_ipmi_softc *sc, s timo *= 10; /* Timeout is in milliseconds, we delay in 100us */ do { msg_len = sizeof(struct opal_ipmi_msg) + IPMI_MAX_RX; + /* Crank the OPAL state machine while we poll for a reply. */ + opal_call(OPAL_POLL_EVENTS, NULL); err = opal_call(OPAL_IPMI_RECV, sc->sc_interface, vtophys(sc->sc_msg), vtophys(&msg_len)); if (err != OPAL_EMPTY) @@ -113,6 +115,7 @@ opal_ipmi_polled_request(struct opal_ipmi_softc *sc, s 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]; + err = 0; break; case OPAL_RESOURCE: err = ENOMEM; @@ -223,7 +226,15 @@ opal_ipmi_attach(device_t dev) static int opal_ipmi_detach(device_t dev) { - return (EBUSY); + struct opal_ipmi_softc *sc; + int err; + + sc = device_get_softc(dev); + err = ipmi_detach(dev); + if (err == 0) + free(sc->sc_msg, M_IPMI); + + return (err); } static device_method_t opal_ipmi_methods[] = {