{"id":783380,"url":"http://patchwork.ozlabs.org/api/patches/783380/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1499074673-30576-3-git-send-email-anju@linux.vnet.ibm.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<1499074673-30576-3-git-send-email-anju@linux.vnet.ibm.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/1499074673-30576-3-git-send-email-anju@linux.vnet.ibm.com/","date":"2017-07-03T09:37:48","name":"[v12,02/10] powerpc/powernv: Autoload IMC device driver module","commit_ref":null,"pull_url":null,"state":"superseded","archived":true,"hash":"6d1ab8a714f7ea1124b2926c0090250f8021c396","submitter":{"id":67491,"url":"http://patchwork.ozlabs.org/api/people/67491/?format=json","name":"Anju T Sudhakar","email":"anju@linux.vnet.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1499074673-30576-3-git-send-email-anju@linux.vnet.ibm.com/mbox/","series":[],"comments":"http://patchwork.ozlabs.org/api/patches/783380/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/783380/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Received":["from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3x1McF10HYz9rxl\n\tfor ;\n\tMon, 3 Jul 2017 19:42:21 +1000 (AEST)","from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3x1McF0DZ9zDrF6\n\tfor ;\n\tMon, 3 Jul 2017 19:42:21 +1000 (AEST)","from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com\n\t[148.163.158.5])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3x1MWV0zwmzDr4L\n\tfor ;\n\tMon, 3 Jul 2017 19:38:13 +1000 (AEST)","from pps.filterd (m0098416.ppops.net [127.0.0.1])\n\tby mx0b-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id\n\tv639XfkP023045\n\tfor ; Mon, 3 Jul 2017 05:38:11 -0400","from e23smtp01.au.ibm.com (e23smtp01.au.ibm.com [202.81.31.143])\n\tby mx0b-001b2d01.pphosted.com with ESMTP id 2bfjk3a2r9-1\n\t(version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT)\n\tfor ; Mon, 03 Jul 2017 05:38:11 -0400","from localhost\n\tby e23smtp01.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use\n\tOnly! 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Violators will be prosecuted; \n\tMon, 3 Jul 2017 19:38:06 +1000","from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97])\n\tby d23relay09.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id\n\tv639c5BP60162284\n\tfor ; Mon, 3 Jul 2017 19:38:05 +1000","from d23av03.au.ibm.com (localhost [127.0.0.1])\n\tby d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id\n\tv639btfq027722\n\tfor ; Mon, 3 Jul 2017 19:37:56 +1000","from xenial-xerus.in.ibm.com (xenial-xerus.in.ibm.com [9.124.35.20]\n\t(may be forged))\n\tby d23av03.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id\n\tv639bkFP027271; Mon, 3 Jul 2017 19:37:53 +1000"],"From":"Anju T Sudhakar ","To":"mpe@ellerman.id.au","Subject":"[PATCH v12 02/10] powerpc/powernv: Autoload IMC device driver module","Date":"Mon, 3 Jul 2017 15:07:48 +0530","X-Mailer":"git-send-email 2.7.4","In-Reply-To":"<1499074673-30576-1-git-send-email-anju@linux.vnet.ibm.com>","References":"<1499074673-30576-1-git-send-email-anju@linux.vnet.ibm.com>","X-TM-AS-MML":"disable","x-cbid":"17070309-1617-0000-0000-000001F0CF0C","X-IBM-AV-DETECTION":"SAVI=unused REMOTE=unused XFE=unused","x-cbparentid":"17070309-1618-0000-0000-000048381596","Message-Id":"<1499074673-30576-3-git-send-email-anju@linux.vnet.ibm.com>","X-Proofpoint-Virus-Version":"vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-07-03_06:, , signatures=0","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n\tspamscore=0 suspectscore=1\n\tmalwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam\n\tadjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000\n\tdefinitions=main-1707030160","X-BeenThere":"linuxppc-dev@lists.ozlabs.org","X-Mailman-Version":"2.1.23","Precedence":"list","List-Id":"Linux on PowerPC Developers Mail List\n\t","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"stewart@linux.vnet.ibm.com, ego@linux.vnet.ibm.com, mikey@neuling.org,\n\tmaddy@linux.vnet.ibm.com, hemant@linux.vnet.ibm.com,\n\tlinux-kernel@vger.kernel.org, eranian@google.com,\n\tanju@linux.vnet.ibm.com, anton@samba.org, sukadev@linux.vnet.ibm.com,\n\tlinuxppc-dev@lists.ozlabs.org, dja@axtens.net","Errors-To":"linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org","Sender":"\"Linuxppc-dev\"\n\t"},"content":"Code to create platform device for the IMC counters.\nPaltform devices are created based on the IMC compatibility\nstring.\n\nNew Config flag \"CONFIG_HV_PERF_IMC_CTRS\" add to contain the\nIMC counter changes.\n\nSigned-off-by: Anju T Sudhakar \nSigned-off-by: Hemant Kumar \nSigned-off-by: Madhavan Srinivasan \n---\n arch/powerpc/platforms/powernv/Kconfig | 10 +++++\n arch/powerpc/platforms/powernv/Makefile | 1 +\n arch/powerpc/platforms/powernv/opal-imc.c | 73 +++++++++++++++++++++++++++++++\n arch/powerpc/platforms/powernv/opal.c | 18 ++++++++\n 4 files changed, 102 insertions(+)\n create mode 100644 arch/powerpc/platforms/powernv/opal-imc.c","diff":"diff --git a/arch/powerpc/platforms/powernv/Kconfig b/arch/powerpc/platforms/powernv/Kconfig\nindex 6a6f4ef46b9e..543c6cd5e8d3 100644\n--- a/arch/powerpc/platforms/powernv/Kconfig\n+++ b/arch/powerpc/platforms/powernv/Kconfig\n@@ -30,3 +30,13 @@ config OPAL_PRD\n \thelp\n \t This enables the opal-prd driver, a facility to run processor\n \t recovery diagnostics on OpenPower machines\n+\n+config HV_PERF_IMC_CTRS\n+ bool \"Hypervisor supplied In Memory Collection PMU events (Nest & Core)\"\n+ default y\n+ depends on PERF_EVENTS && PPC_POWERNV\n+ help\n+\t Enable access to hypervisor supplied in-memory collection counters\n+\t in perf. IMC counters are available from Power9 systems.\n+\n+ If unsure, select Y.\ndiff --git a/arch/powerpc/platforms/powernv/Makefile b/arch/powerpc/platforms/powernv/Makefile\nindex b5d98cb3f482..715e531f6711 100644\n--- a/arch/powerpc/platforms/powernv/Makefile\n+++ b/arch/powerpc/platforms/powernv/Makefile\n@@ -12,3 +12,4 @@ obj-$(CONFIG_PPC_SCOM)\t+= opal-xscom.o\n obj-$(CONFIG_MEMORY_FAILURE)\t+= opal-memory-errors.o\n obj-$(CONFIG_TRACEPOINTS)\t+= opal-tracepoints.o\n obj-$(CONFIG_OPAL_PRD)\t+= opal-prd.o\n+obj-$(CONFIG_HV_PERF_IMC_CTRS) += opal-imc.o\ndiff --git a/arch/powerpc/platforms/powernv/opal-imc.c b/arch/powerpc/platforms/powernv/opal-imc.c\nnew file mode 100644\nindex 000000000000..5b1045c81af4\n--- /dev/null\n+++ b/arch/powerpc/platforms/powernv/opal-imc.c\n@@ -0,0 +1,73 @@\n+/*\n+ * OPAL IMC interface detection driver\n+ * Supported on POWERNV platform\n+ *\n+ * Copyright\t(C) 2017 Madhavan Srinivasan, IBM Corporation.\n+ *\t\t(C) 2017 Anju T Sudhakar, IBM Corporation.\n+ *\t\t(C) 2017 Hemant K Shaw, IBM Corporation.\n+ *\n+ * This program is free software; you can redistribute it and/or\n+ * modify it under the terms of the GNU General Public License\n+ * as published by the Free Software Foundation; either version\n+ * 2 of the License, or later version.\n+ *\n+ * This program is distributed in the hope that it will be useful,\n+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\n+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n+ * GNU General Public License for more details.\n+ */\n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+#include \n+\n+static int opal_imc_counters_probe(struct platform_device *pdev)\n+{\n+\tstruct device_node *imc_dev = NULL;\n+\n+\tif (!pdev || !pdev->dev.of_node)\n+\t\treturn -ENODEV;\n+\n+\t/*\n+\t * Check whether this is kdump kernel. If yes, just return.\n+\t */\n+\tif (is_kdump_kernel())\n+\t\treturn -ENODEV;\n+\n+\timc_dev = pdev->dev.of_node;\n+\tif (!imc_dev)\n+\t\treturn -ENODEV;\n+\n+\treturn 0;\n+}\n+\n+static const struct of_device_id opal_imc_match[] = {\n+\t{ .compatible = IMC_DTB_COMPAT },\n+\t{},\n+};\n+\n+static struct platform_driver opal_imc_driver = {\n+\t.driver = {\n+\t\t.name = \"opal-imc-counters\",\n+\t\t.of_match_table = opal_imc_match,\n+\t},\n+\t.probe = opal_imc_counters_probe,\n+};\n+\n+MODULE_DEVICE_TABLE(of, opal_imc_match);\n+module_platform_driver(opal_imc_driver);\n+MODULE_DESCRIPTION(\"PowerNV OPAL IMC driver\");\n+MODULE_LICENSE(\"GPL\");\ndiff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c\nindex 59684b4af4d1..fbdca259ea76 100644\n--- a/arch/powerpc/platforms/powernv/opal.c\n+++ b/arch/powerpc/platforms/powernv/opal.c\n@@ -14,6 +14,7 @@\n #include \n #include \n #include \n+#include \n #include \n #include \n #include \n@@ -30,6 +31,7 @@\n #include \n #include \n #include \n+#include \n \n #include \"powernv.h\"\n \n@@ -705,6 +707,17 @@ static void opal_pdev_init(const char *compatible)\n \t\tof_platform_device_create(np, NULL, NULL);\n }\n \n+#ifdef CONFIG_HV_PERF_IMC_CTRS\n+static void __init opal_imc_init_dev(void)\n+{\n+\tstruct device_node *np;\n+\n+\tnp = of_find_compatible_node(NULL, NULL, IMC_DTB_COMPAT);\n+\tif (np)\n+\t\tof_platform_device_create(np, NULL, NULL);\n+}\n+#endif\n+\n static int kopald(void *unused)\n {\n \tunsigned long timeout = msecs_to_jiffies(opal_heartbeat) + 1;\n@@ -778,6 +791,11 @@ static int __init opal_init(void)\n \t/* Setup a heatbeat thread if requested by OPAL */\n \topal_init_heartbeat();\n \n+#ifdef CONFIG_HV_PERF_IMC_CTRS\n+\t/* Detect IMC pmu counters support and create PMUs */\n+\topal_imc_init_dev();\n+#endif\n+\n \t/* Create leds platform devices */\n \tleds = of_find_node_by_path(\"/ibm,opal/leds\");\n \tif (leds) {\n","prefixes":["v12","02/10"]}