From patchwork Thu Mar 5 04:17:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Roth X-Patchwork-Id: 446574 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id DEB2314016B for ; Thu, 5 Mar 2015 15:24:05 +1100 (AEDT) Received: from localhost ([::1]:48140 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YTNKO-0005A5-1K for incoming@patchwork.ozlabs.org; Wed, 04 Mar 2015 23:24:04 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50976) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YTNHR-0006wy-Bk for qemu-devel@nongnu.org; Wed, 04 Mar 2015 23:21:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YTNHJ-0007l5-Rj for qemu-devel@nongnu.org; Wed, 04 Mar 2015 23:21:01 -0500 Received: from e18.ny.us.ibm.com ([129.33.205.208]:59921) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YTNHJ-0007jB-62 for qemu-devel@nongnu.org; Wed, 04 Mar 2015 23:20:53 -0500 Received: from /spool/local by e18.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 4 Mar 2015 23:20:52 -0500 Received: from b01cxnp22034.gho.pok.ibm.com (b01cxnp22034.gho.pok.ibm.com [9.57.198.24]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id B67CD38C8026; Wed, 4 Mar 2015 23:20:51 -0500 (EST) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t254Kpic28508274; Thu, 5 Mar 2015 04:20:51 GMT Received: from d01av01.pok.ibm.com (localhost [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t254KpBA032728; Wed, 4 Mar 2015 23:20:51 -0500 Received: from localhost ([9.80.111.237]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t254KoPN032710; Wed, 4 Mar 2015 23:20:50 -0500 From: Michael Roth To: qemu-devel@nongnu.org Date: Wed, 4 Mar 2015 22:17:46 -0600 Message-Id: <1425529076-15340-6-git-send-email-mdroth@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1425529076-15340-1-git-send-email-mdroth@linux.vnet.ibm.com> References: <1425529076-15340-1-git-send-email-mdroth@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15030504-0033-0000-0000-0000001BA48D X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 129.33.205.208 Cc: aik@ozlabs.ru, agraf@suse.de, ncmike@ncultra.org, qemu-ppc@nongnu.org, tyreld@linux.vnet.ibm.com, bharata.rao@gmail.com, nfont@linux.vnet.ibm.com, david@gibson.dropbear.id.au Subject: [Qemu-devel] [PATCH v7 05/15] spapr_rtas: add get-sensor-state RTAS interface X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Mike Day This interface allows a guest to read various platform/device sensors. initially, we only implement support necessary to support hotplug: reading of the dr-entity-sense sensor, which communicates the state of a hotplugged resource/device to the guest (EMPTY/PRESENT/UNUSABLE). See docs/specs/ppc-spapr-hotplug.txt for a complete description of this interface. Signed-off-by: Mike Day Signed-off-by: Michael Roth Reviewed-by: David Gibson --- hw/ppc/spapr_rtas.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c index 6c741fa..f80beb2 100644 --- a/hw/ppc/spapr_rtas.c +++ b/hw/ppc/spapr_rtas.c @@ -377,6 +377,47 @@ out_unimplemented: rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); } +static void rtas_get_sensor_state(PowerPCCPU *cpu, sPAPREnvironment *spapr, + uint32_t token, uint32_t nargs, + target_ulong args, uint32_t nret, + target_ulong rets) +{ + uint32_t sensor_type; + uint32_t sensor_index; + sPAPRDRConnector *drc; + sPAPRDRConnectorClass *drck; + uint32_t entity_sense; + + if (nargs != 2 || nret != 2) { + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); + return; + } + + sensor_type = rtas_ld(args, 0); + sensor_index = rtas_ld(args, 1); + + if (sensor_type != RTAS_SENSOR_TYPE_ENTITY_SENSE) { + /* currently only DR-related sensors are implemented */ + DPRINTF("rtas_get_sensor_state: sensor/indicator not implemented: %d\n", + sensor_type); + rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); + return; + } + + drc = spapr_dr_connector_by_index(sensor_index); + if (!drc) { + DPRINTF("rtas_get_sensor_state: invalid sensor/DRC index: %xh\n", + sensor_index); + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); + return; + } + drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); + entity_sense = drck->entity_sense(drc); + + rtas_st(rets, 0, RTAS_OUT_SUCCESS); + rtas_st(rets, 1, entity_sense); +} + static struct rtas_call { const char *name; spapr_rtas_fn fn; @@ -508,6 +549,8 @@ static void core_rtas_register_types(void) rtas_get_power_level); spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator", rtas_set_indicator); + spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state", + rtas_get_sensor_state); } type_init(core_rtas_register_types)