From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id A95F268FD for ; Mon, 22 Sep 2014 20:29:38 +0200 (CEST) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 22 Sep 2014 11:35:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.04,573,1406617200"; d="scan'208";a="606714512" Received: from sie-lab-212-143.ir.intel.com (HELO silpixa00385294.ir.intel.com) ([10.237.212.143]) by orsmga002.jf.intel.com with ESMTP; 22 Sep 2014 11:35:24 -0700 From: Alan Carew To: dev@dpdk.org Date: Mon, 22 Sep 2014 19:34:35 +0100 Message-Id: <1411410879-28872-7-git-send-email-alan.carew@intel.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1411410879-28872-1-git-send-email-alan.carew@intel.com> References: <1411410879-28872-1-git-send-email-alan.carew@intel.com> Subject: [dpdk-dev] [PATCH 06/10] Alternate implementation of librte_power for VM Power Management(Guest). X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Sep 2014 18:29:40 -0000 Re-using the host based librte_power API the alternate implementation uses the guest channel API to forward request for frequency changes to the host monitor. A subset of the librte_power API is supported: rte_power_init(unsigned lcore_id) rte_power_exit(unsigned lcore_id) rte_power_freq_up(unsigned lcore_id) rte_power_freq_down(unsigned lcore_id) rte_power_freq_min(unsigned lcore_id) rte_power_freq_max(unsigned lcore_id) The other unsupported APIs from librte_power return -ENOTSUP. Signed-off-by: Alan Carew --- lib/librte_power_vm/Makefile | 49 ++++++++++++++ lib/librte_power_vm/rte_power.c | 146 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 195 insertions(+) create mode 100644 lib/librte_power_vm/Makefile create mode 100644 lib/librte_power_vm/rte_power.c diff --git a/lib/librte_power_vm/Makefile b/lib/librte_power_vm/Makefile new file mode 100644 index 0000000..284ec2c --- /dev/null +++ b/lib/librte_power_vm/Makefile @@ -0,0 +1,49 @@ +# BSD LICENSE +# +# Copyright(c) 2010-2014 Intel Corporation. All rights reserved. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Intel Corporation nor the names of its +# contributors may be used to endorse or promote products derived +# from this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +include $(RTE_SDK)/mk/rte.vars.mk + +# library name +LIB = librte_power.a + +CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 -fno-strict-aliasing +CFLAGS += -I$(RTE_SDK)/lib/librte_power/ + +# all source are stored in SRCS-y +SRCS-$(CONFIG_RTE_LIBRTE_POWER_VM) := guest_channel.c rte_power.c + +# install this header file +SYMLINK-y-include := ../librte_power/rte_power.h + +# this lib needs eal +DEPDIRS-$(CONFIG_RTE_LIBRTE_POWER) += lib/librte_eal + +include $(RTE_SDK)/mk/rte.lib.mk diff --git a/lib/librte_power_vm/rte_power.c b/lib/librte_power_vm/rte_power.c new file mode 100644 index 0000000..1ce3fb0 --- /dev/null +++ b/lib/librte_power_vm/rte_power.c @@ -0,0 +1,146 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include +#include + +#include +#include + +#include "guest_channel.h" +#include "channel_commands.h" +#include "rte_power.h" + +#define RTE_LOGTYPE_POWER_VM RTE_LOGTYPE_USER1 + +#define FD_PATH "/dev/virtio-ports/virtio.serial.port.poweragent" + +static struct channel_packet pkt[RTE_MAX_LCORE]; + + +int +rte_power_init(unsigned lcore_id) +{ + pkt[lcore_id].command = CPU_POWER; + pkt[lcore_id].resource_id = lcore_id; + return guest_channel_host_connect(FD_PATH, lcore_id); +} + +int +rte_power_exit(unsigned lcore_id) +{ + guest_channel_host_disconnect(lcore_id); + return 0; +} + +uint32_t +rte_power_freqs(__attribute__((unused)) unsigned lcore_id, + __attribute__((unused)) uint32_t *freqs, + __attribute__((unused)) uint32_t num) +{ + RTE_LOG(ERR, POWER_VM, "rte_power_freqs is not implemented " + "for Virtual Machine Power Management\n"); + return -ENOTSUP; +} + +uint32_t +rte_power_get_freq(__attribute__((unused)) unsigned lcore_id) +{ + RTE_LOG(ERR, POWER_VM, "rte_power_get_freq is not implemented " + "for Virtual Machine Power Management\n"); + return -ENOTSUP; +} + +int +rte_power_set_freq(__attribute__((unused)) unsigned lcore_id, + __attribute__((unused)) uint32_t index) +{ + RTE_LOG(ERR, POWER_VM, "rte_power_set_freq is not implemented " + "for Virtual Machine Power Management\n"); + return -ENOTSUP; +} + +int +rte_power_freq_up(unsigned lcore_id) +{ + int ret; + pkt[lcore_id].unit = CPU_SCALE_UP; + + ret = guest_channel_send_msg(&pkt[lcore_id], lcore_id); + if (ret <= 0) + return ret; + if (ret > 0) + RTE_LOG(DEBUG, POWER_VM, "Error sending message: %s\n", strerror(ret)); + return -1; +} + +int +rte_power_freq_down(__attribute__((unused)) unsigned lcore_id) +{ + int ret; + pkt[lcore_id].unit = CPU_SCALE_DOWN; + + ret = guest_channel_send_msg(&pkt[lcore_id], lcore_id); + if (ret <= 0) + return ret; + if (ret > 0) + RTE_LOG(DEBUG, POWER_VM, "Error sending message: %s\n", strerror(ret)); + return -1; +} + +int +rte_power_freq_max(__attribute__((unused)) unsigned lcore_id) +{ + int ret; + pkt[lcore_id].unit = CPU_SCALE_MAX; + + ret = guest_channel_send_msg(&pkt[lcore_id], lcore_id); + if (ret <= 0) + return ret; + if (ret > 0) + RTE_LOG(DEBUG, POWER_VM, "Error sending message: %s\n", strerror(ret)); + return -1; +} + +int +rte_power_freq_min(__attribute__((unused)) unsigned lcore_id) +{ + int ret; + pkt[lcore_id].unit = CPU_SCALE_MIN; + + ret = guest_channel_send_msg(&pkt[lcore_id], lcore_id); + if (ret <= 0) + return ret; + if (ret > 0) + RTE_LOG(DEBUG, POWER_VM, "Error sending message: %s\n", strerror(ret)); + return -1; +} -- 1.9.3