From patchwork Wed Apr 22 06:28:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Roth X-Patchwork-Id: 463580 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 2C731140134 for ; Wed, 22 Apr 2015 16:44:56 +1000 (AEST) Received: from localhost ([::1]:33410 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YkoP0-0004lb-0y for incoming@patchwork.ozlabs.org; Wed, 22 Apr 2015 02:44:54 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46993) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YkoNv-0002oB-Ec for qemu-devel@nongnu.org; Wed, 22 Apr 2015 02:43:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YkoNs-0002MI-Nn for qemu-devel@nongnu.org; Wed, 22 Apr 2015 02:43:47 -0400 Received: from e39.co.us.ibm.com ([32.97.110.160]:54113) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YkoNs-0002Lu-Hf for qemu-devel@nongnu.org; Wed, 22 Apr 2015 02:43:44 -0400 Received: from /spool/local by e39.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 22 Apr 2015 00:43:41 -0600 Received: from b03cxnp08026.gho.boulder.ibm.com (b03cxnp08026.gho.boulder.ibm.com [9.17.130.18]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id D797C1FF0021; Wed, 22 Apr 2015 00:34:51 -0600 (MDT) Received: from d03av01.boulder.ibm.com (d03av01.boulder.ibm.com [9.17.195.167]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t3M6hcUV40042598; Tue, 21 Apr 2015 23:43:38 -0700 Received: from d03av01.boulder.ibm.com (localhost [127.0.0.1]) by d03av01.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t3M6he0w029010; Wed, 22 Apr 2015 00:43:40 -0600 Received: from localhost ([9.80.109.219]) by d03av01.boulder.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t3M6hdX2028945; Wed, 22 Apr 2015 00:43:40 -0600 From: Michael Roth To: qemu-devel@nongnu.org Date: Wed, 22 Apr 2015 01:28:07 -0500 Message-Id: <1429684100-13354-4-git-send-email-mdroth@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1429684100-13354-1-git-send-email-mdroth@linux.vnet.ibm.com> References: <1429684100-13354-1-git-send-email-mdroth@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15042206-0033-0000-0000-0000044F03B5 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 32.97.110.160 Cc: aik@ozlabs.ru, agraf@suse.de, 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 v8 03/16] spapr_rtas: add get/set-power-level RTAS interfaces 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: Nathan Fontenot These interfaces manage the power domains that guest devices are assigned to and are used to power on/off devices. Currently we only utilize 1 power domain, the 'live-insertion' domain, which automates power management of plugged/unplugged devices, essentially making these calls no-ops, but the RTAS interfaces are still required by guest hotplug code and PAPR+. See docs/specs/ppc-spapr-hotplug.txt for a complete description of these interfaces. Signed-off-by: Nathan Fontenot Signed-off-by: Michael Roth Reviewed-by: David Gibson --- hw/ppc/spapr_rtas.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c index 0f1ae55..d7694cd 100644 --- a/hw/ppc/spapr_rtas.c +++ b/hw/ppc/spapr_rtas.c @@ -245,6 +245,56 @@ static void rtas_ibm_os_term(PowerPCCPU *cpu, rtas_st(rets, 0, ret); } +static void rtas_set_power_level(PowerPCCPU *cpu, sPAPREnvironment *spapr, + uint32_t token, uint32_t nargs, + target_ulong args, uint32_t nret, + target_ulong rets) +{ + int32_t power_domain; + + if (nargs != 2 || nret != 2) { + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); + return; + } + + /* we currently only use a single, "live insert" powerdomain for + * hotplugged/dlpar'd resources, so the power is always live/full (100) + */ + power_domain = rtas_ld(args, 0); + if (power_domain != -1) { + rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); + return; + } + + rtas_st(rets, 0, RTAS_OUT_SUCCESS); + rtas_st(rets, 1, 100); +} + +static void rtas_get_power_level(PowerPCCPU *cpu, sPAPREnvironment *spapr, + uint32_t token, uint32_t nargs, + target_ulong args, uint32_t nret, + target_ulong rets) +{ + int32_t power_domain; + + if (nargs != 1 || nret != 2) { + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); + return; + } + + /* we currently only use a single, "live insert" powerdomain for + * hotplugged/dlpar'd resources, so the power is always live/full (100) + */ + power_domain = rtas_ld(args, 0); + if (power_domain != -1) { + rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); + return; + } + + rtas_st(rets, 0, RTAS_OUT_SUCCESS); + rtas_st(rets, 1, 100); +} + static struct rtas_call { const char *name; spapr_rtas_fn fn; @@ -370,6 +420,10 @@ static void core_rtas_register_types(void) rtas_ibm_set_system_parameter); spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term", rtas_ibm_os_term); + spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level", + rtas_set_power_level); + spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level", + rtas_get_power_level); } type_init(core_rtas_register_types)