From patchwork Mon Feb 16 14:10:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Roth X-Patchwork-Id: 440146 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 2A13314017A for ; Tue, 17 Feb 2015 01:22:15 +1100 (AEDT) Received: from localhost ([::1]:39790 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YNMYv-0002cW-BC for incoming@patchwork.ozlabs.org; Mon, 16 Feb 2015 09:22:13 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57153) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YNMQP-0003lI-D7 for qemu-devel@nongnu.org; Mon, 16 Feb 2015 09:13:29 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YNMQL-00067o-9g for qemu-devel@nongnu.org; Mon, 16 Feb 2015 09:13:25 -0500 Received: from e8.ny.us.ibm.com ([32.97.182.138]:36641) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YNMQL-00067h-5p for qemu-devel@nongnu.org; Mon, 16 Feb 2015 09:13:21 -0500 Received: from /spool/local by e8.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 16 Feb 2015 09:13:20 -0500 Received: from d01dlp01.pok.ibm.com (9.56.250.166) by e8.ny.us.ibm.com (192.168.1.108) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 16 Feb 2015 09:13:19 -0500 Received: from b01cxnp23033.gho.pok.ibm.com (b01cxnp23033.gho.pok.ibm.com [9.57.198.28]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id EAC5A38C8039; Mon, 16 Feb 2015 09:07:49 -0500 (EST) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t1GEDIXi28180510; Mon, 16 Feb 2015 14:13:18 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 t1GEDHi4030449; Mon, 16 Feb 2015 09:13:18 -0500 Received: from localhost ([9.80.84.249]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id t1GEDHnS030395; Mon, 16 Feb 2015 09:13:17 -0500 From: Michael Roth To: qemu-devel@nongnu.org Date: Mon, 16 Feb 2015 08:10:45 -0600 Message-Id: <1424095858-15501-4-git-send-email-mdroth@linux.vnet.ibm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1424095858-15501-1-git-send-email-mdroth@linux.vnet.ibm.com> References: <1424095858-15501-1-git-send-email-mdroth@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15021614-0029-0000-0000-000002008880 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 32.97.182.138 Cc: aik@ozlabs.ru, qemu-pcc@nongnu.org, agraf@suse.de, ncmike@ncultra.org, tyreld@linux.vnet.ibm.com, bharata.rao@gmail.com, nfont@linux.vnet.ibm.com, david@gibson.dropbear.id.au Subject: [Qemu-devel] [PATCH v5 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 --- 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)