From patchwork Thu Feb 20 12:00:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre Morel X-Patchwork-Id: 11393895 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 38799159A for ; Thu, 20 Feb 2020 12:01:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 21D98208C4 for ; Thu, 20 Feb 2020 12:01:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728065AbgBTMBD (ORCPT ); Thu, 20 Feb 2020 07:01:03 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:39376 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727772AbgBTMAx (ORCPT ); Thu, 20 Feb 2020 07:00:53 -0500 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01KC0kQC019569 for ; Thu, 20 Feb 2020 07:00:52 -0500 Received: from e06smtp03.uk.ibm.com (e06smtp03.uk.ibm.com [195.75.94.99]) by mx0a-001b2d01.pphosted.com with ESMTP id 2y9sbu8tb3-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 20 Feb 2020 07:00:52 -0500 Received: from localhost by e06smtp03.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 20 Feb 2020 12:00:47 -0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 01KC0kcl37486944 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 20 Feb 2020 12:00:46 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3C591AE05F; Thu, 20 Feb 2020 12:00:46 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 10218AE05A; Thu, 20 Feb 2020 12:00:46 +0000 (GMT) Received: from oc3016276355.ibm.com (unknown [9.152.222.41]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 20 Feb 2020 12:00:45 +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 Subject: [kvm-unit-tests PATCH v5 07/10] s390x: css: stsch, enumeration test Date: Thu, 20 Feb 2020 13:00:40 +0100 X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1582200043-21760-1-git-send-email-pmorel@linux.ibm.com> References: <1582200043-21760-1-git-send-email-pmorel@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 20022012-0012-0000-0000-000003889715 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20022012-0013-0000-0000-000021C52DA3 Message-Id: <1582200043-21760-8-git-send-email-pmorel@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-02-20_03:2020-02-19,2020-02-20 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 mlxscore=0 malwarescore=0 bulkscore=0 mlxlogscore=999 impostorscore=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 suspectscore=1 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002200091 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. 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 --- lib/s390x/css.h | 1 + s390x/Makefile | 2 + s390x/css.c | 91 +++++++++++++++++++++++++++++++++++++++++++++ s390x/unittests.cfg | 4 ++ 4 files changed, 98 insertions(+) create mode 100644 s390x/css.c diff --git a/lib/s390x/css.h b/lib/s390x/css.h index 8144a21..448e597 100644 --- a/lib/s390x/css.h +++ b/lib/s390x/css.h @@ -82,6 +82,7 @@ struct pmcw { uint8_t chpid[8]; uint32_t flags2; }; +#define PMCW_CHANNEL_TYPE(pmcw) (pmcw->flags2 >> 21) struct schib { struct pmcw pmcw; diff --git a/s390x/Makefile b/s390x/Makefile index ddb4b48..baebf18 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 @@ -51,6 +52,7 @@ cflatobjs += lib/s390x/sclp-console.o cflatobjs += lib/s390x/interrupt.o cflatobjs += lib/s390x/mmu.o cflatobjs += lib/s390x/smp.o +cflatobjs += lib/s390x/css_dump.o OBJDIRS += lib/s390x diff --git a/s390x/css.c b/s390x/css.c new file mode 100644 index 0000000..cb33e00 --- /dev/null +++ b/s390x/css.c @@ -0,0 +1,91 @@ +/* + * Channel Subsystem tests + * + * Copyright (c) 2019 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 + +#include + +#define SID_ONE 0x00010000 + +static struct schib schib; +static int test_device_sid; + +static void test_enumerate(void) +{ + struct pmcw *pmcw = &schib.pmcw; + int cc; + int scn; + int scn_found = 0; + int dev_found = 0; + + for (scn = 0; scn < 0xffff; scn++) { + cc = stsch(scn|SID_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 happened for STSCH */ + report(0, "Unexpected cc=%d on subchannel number 0x%x", + cc, scn); + return; + } + /* 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 (!test_device_sid) + test_device_sid = scn|SID_ONE; + dev_found++; + } +out: + if (!dev_found) { + report(0, "Tested subchannels: %d, I/O subchannels: %d, I/O devices: %d", + scn, scn_found, dev_found); + return; + } + report(1, "Tested subchannels: %d, I/O subchannels: %d, I/O devices: %d", + scn, scn_found, dev_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 07013b2..a436ec0 100644 --- a/s390x/unittests.cfg +++ b/s390x/unittests.cfg @@ -83,3 +83,7 @@ extra_params = -m 1G [sclp-3g] file = sclp.elf extra_params = -m 3G + +[css] +file = css.elf +extra_params =-device ccw-pong