From mboxrd@z Thu Jan 1 00:00:00 1970 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! Violators will be prosecuted for from ; Wed, 22 Apr 2015 00:43:44 -0600 From: Michael Roth Date: Wed, 22 Apr 2015 01:28:07 -0500 Message-Id: <1429684100-13354-4-git-send-email-mdroth@linux.vnet.ibm.com> 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> Subject: [Qemu-devel] [PATCH v8 03/16] spapr_rtas: add get/set-power-level RTAS interfaces List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org 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 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) -- 1.9.1