From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9A6D4C433F7 for ; Thu, 16 Jul 2020 08:23:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7EC7120775 for ; Thu, 16 Jul 2020 08:23:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727848AbgGPIXs (ORCPT ); Thu, 16 Jul 2020 04:23:48 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:48866 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725921AbgGPIXm (ORCPT ); Thu, 16 Jul 2020 04:23:42 -0400 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 06G82hf4184197; Thu, 16 Jul 2020 04:23:41 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 32aj742fqq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 16 Jul 2020 04:23:40 -0400 Received: from m0098416.ppops.net (m0098416.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 06G84fqX193215; Thu, 16 Jul 2020 04:23:40 -0400 Received: from ppma04ams.nl.ibm.com (63.31.33a9.ip4.static.sl-reverse.com [169.51.49.99]) by mx0b-001b2d01.pphosted.com with ESMTP id 32aj742fq3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 16 Jul 2020 04:23:40 -0400 Received: from pps.filterd (ppma04ams.nl.ibm.com [127.0.0.1]) by ppma04ams.nl.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 06G8K21Q011656; Thu, 16 Jul 2020 08:23:38 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma04ams.nl.ibm.com with ESMTP id 329nmyhk0u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 16 Jul 2020 08:23:38 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 06G8Na8q57868348 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 16 Jul 2020 08:23:36 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 350B44C044; Thu, 16 Jul 2020 08:23:36 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 934984C040; Thu, 16 Jul 2020 08:23:35 +0000 (GMT) Received: from oc3016276355.ibm.com (unknown [9.145.61.186]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 16 Jul 2020 08:23:35 +0000 (GMT) From: Pierre Morel To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, frankja@linux.ibm.com, david@redhat.com, thuth@redhat.com, cohuck@redhat.com, drjones@redhat.com Subject: [kvm-unit-tests PATCH v13 7/9] s390x: css: stsch, enumeration test Date: Thu, 16 Jul 2020 10:23:27 +0200 Message-Id: <1594887809-10521-8-git-send-email-pmorel@linux.ibm.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1594887809-10521-1-git-send-email-pmorel@linux.ibm.com> References: <1594887809-10521-1-git-send-email-pmorel@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-07-16_04:2020-07-16,2020-07-16 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 spamscore=0 mlxscore=0 impostorscore=0 clxscore=1015 malwarescore=0 lowpriorityscore=0 adultscore=0 suspectscore=1 priorityscore=1501 mlxlogscore=999 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007160058 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org First step for testing the channel subsystem is to enumerate the css and retrieve the css devices. We currently don't enable multiple subchannel sets and therefore only look in subchannel set 0 This tests the success of STSCH I/O instruction, we do not test the reaction of the VM for an instruction with wrong parameters. Signed-off-by: Pierre Morel Acked-by: Thomas Huth Reviewed-by: Cornelia Huck --- lib/s390x/css_lib.c | 70 +++++++++++++++++++++++++++++++++++++++++++++ s390x/Makefile | 2 ++ s390x/css.c | 55 +++++++++++++++++++++++++++++++++++ s390x/unittests.cfg | 4 +++ 4 files changed, 131 insertions(+) create mode 100644 lib/s390x/css_lib.c create mode 100644 s390x/css.c diff --git a/lib/s390x/css_lib.c b/lib/s390x/css_lib.c new file mode 100644 index 0000000..fd087ce --- /dev/null +++ b/lib/s390x/css_lib.c @@ -0,0 +1,70 @@ +/* + * Channel Subsystem tests library + * + * Copyright (c) 2020 IBM Corp + * + * Authors: + * Pierre Morel + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2. + */ +#include +#include +#include +#include +#include +#include + +#include + +static struct schib schib; + +/* + * css_enumerate: + * On success return the first subchannel ID found. + * On error return an invalid subchannel ID containing cc + */ +int css_enumerate(void) +{ + struct pmcw *pmcw = &schib.pmcw; + int scn_found = 0; + int dev_found = 0; + int schid = 0; + int cc; + int scn; + + for (scn = 0; scn < 0xffff; scn++) { + cc = stsch(scn | SCHID_ONE, &schib); + switch (cc) { + case 0: /* 0 means SCHIB stored */ + break; + case 3: /* 3 means no more channels */ + goto out; + default: /* 1 or 2 should never happen for STSCH */ + report_abort("Unexpected error %d on subchannel %08x", + cc, scn | SCHID_ONE); + return cc; + } + + /* We currently only support type 0, a.k.a. I/O channels */ + if (PMCW_CHANNEL_TYPE(pmcw) != 0) + continue; + + /* We ignore I/O channels without valid devices */ + scn_found++; + if (!(pmcw->flags & PMCW_DNV)) + continue; + + /* We keep track of the first device as our test device */ + if (!schid) + schid = scn | SCHID_ONE; + report_info("Found subchannel %08x", scn | SCHID_ONE); + dev_found++; + } + +out: + report_info("Tested subchannels: %d, I/O subchannels: %d, I/O devices: %d", + scn, scn_found, dev_found); + return schid; +} diff --git a/s390x/Makefile b/s390x/Makefile index 050c40b..166cb5c 100644 --- a/s390x/Makefile +++ b/s390x/Makefile @@ -17,6 +17,7 @@ tests += $(TEST_DIR)/stsi.elf tests += $(TEST_DIR)/skrf.elf tests += $(TEST_DIR)/smp.elf tests += $(TEST_DIR)/sclp.elf +tests += $(TEST_DIR)/css.elf tests_binary = $(patsubst %.elf,%.bin,$(tests)) all: directories test_cases test_cases_binary @@ -52,6 +53,7 @@ cflatobjs += lib/s390x/interrupt.o cflatobjs += lib/s390x/mmu.o cflatobjs += lib/s390x/smp.o cflatobjs += lib/s390x/css_dump.o +cflatobjs += lib/s390x/css_lib.o OBJDIRS += lib/s390x diff --git a/s390x/css.c b/s390x/css.c new file mode 100644 index 0000000..e19ffc8 --- /dev/null +++ b/s390x/css.c @@ -0,0 +1,55 @@ +/* + * Channel Subsystem tests + * + * Copyright (c) 2020 IBM Corp + * + * Authors: + * Pierre Morel + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2. + */ + +#include +#include +#include +#include +#include +#include + +#include + +static int test_device_sid; + +static void test_enumerate(void) +{ + test_device_sid = css_enumerate(); + if (test_device_sid & SCHID_ONE) { + report(1, "Schid of first I/O device: 0x%08x", test_device_sid); + return; + } + report(0, "No I/O device found"); +} + +static struct { + const char *name; + void (*func)(void); +} tests[] = { + { "enumerate (stsch)", test_enumerate }, + { NULL, NULL } +}; + +int main(int argc, char *argv[]) +{ + int i; + + report_prefix_push("Channel Subsystem"); + for (i = 0; tests[i].name; i++) { + report_prefix_push(tests[i].name); + tests[i].func(); + report_prefix_pop(); + } + report_prefix_pop(); + + return report_summary(); +} diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg index b307329..0f156af 100644 --- a/s390x/unittests.cfg +++ b/s390x/unittests.cfg @@ -84,3 +84,7 @@ extra_params = -m 1G [sclp-3g] file = sclp.elf extra_params = -m 3G + +[css] +file = css.elf +extra_params = -device virtio-net-ccw -- 2.25.1