From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:16430 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726610AbfK1MqT (ORCPT ); Thu, 28 Nov 2019 07:46:19 -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 xASCh9Se024607 for ; Thu, 28 Nov 2019 07:46:18 -0500 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0a-001b2d01.pphosted.com with ESMTP id 2wje2hgyam-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 28 Nov 2019 07:46:18 -0500 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 28 Nov 2019 12:46:15 -0000 From: Pierre Morel Subject: [kvm-unit-tests PATCH v2 6/9] s390x: css: stsch, enumeration test Date: Thu, 28 Nov 2019 13:46:04 +0100 In-Reply-To: <1574945167-29677-1-git-send-email-pmorel@linux.ibm.com> References: <1574945167-29677-1-git-send-email-pmorel@linux.ibm.com> Message-Id: <1574945167-29677-7-git-send-email-pmorel@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, frankja@linux.ibm.com, david@redhat.com, thuth@redhat.com, cohuck@redhat.com First step by testing the channel subsystem is to enumerate the css and retrieve the css devices. This test the success of STSCH I/O instruction. Signed-off-by: Pierre Morel --- s390x/Makefile | 4 ++- s390x/css.c | 86 +++++++++++++++++++++++++++++++++++++++++++++ s390x/unittests.cfg | 4 +++ 3 files changed, 93 insertions(+), 1 deletion(-) create mode 100644 s390x/css.c diff --git a/s390x/Makefile b/s390x/Makefile index e9da618..167ba05 100644 --- a/s390x/Makefile +++ b/s390x/Makefile @@ -1,4 +1,4 @@ -tests = $(TEST_DIR)/selftest.elf +#tests = $(TEST_DIR)/selftest.elf tests += $(TEST_DIR)/intercept.elf tests += $(TEST_DIR)/emulator.elf tests += $(TEST_DIR)/sieve.elf @@ -19,6 +19,7 @@ tests += $(TEST_DIR)/smp.elf tests += $(TEST_DIR)/uv-guest.elf tests += $(TEST_DIR)/uv-host.elf tests += $(TEST_DIR)/uv-limit.elf +tests += $(TEST_DIR)/css.elf tests_binary = $(patsubst %.elf,%.bin,$(tests)) tests_img = $(patsubst %.elf,%.img,$(tests)) @@ -56,6 +57,7 @@ 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..8186f55 --- /dev/null +++ b/s390x/css.c @@ -0,0 +1,86 @@ +/* + * Channel Sub-System 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 + +#define SID_ONE 0x00010000 + +static struct schib schib; + +static const char *Channel_type[3] = { + "I/O", "CHSC", "MSG" +}; + +static int test_device_sid; + +static void test_enumerate(void) +{ + struct pmcw *pmcw = &schib.pmcw; + int sid; + int ret, i; + int found = 0; + + for (sid = 0; sid < 0xffff; sid++) { + ret = stsch(sid|SID_ONE, &schib); + if (!ret && (pmcw->flags & PMCW_DNV)) { + report_info("SID %04x Type %s PIM %x", sid, + Channel_type[pmcw->st], pmcw->pim); + for (i = 0; i < 8; i++) { + if ((pmcw->pim << i) & 0x80) { + report_info("CHPID[%d]: %02x", i, + pmcw->chpid[i]); + break; + } + } + found++; + + } + if (found && !test_device_sid) + test_device_sid = sid|SID_ONE; + } + if (!found) { + report("Found %d devices", 0, found); + return; + } + ret = stsch(test_device_sid, &schib); + if (ret) { + report("Err %d on stsch on sid %08x", 0, ret, test_device_sid); + return; + } + report("Tested", 1); + return; +} + +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 Sub-System"); + 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 ff4c088..efdf954 100644 --- a/s390x/unittests.cfg +++ b/s390x/unittests.cfg @@ -78,3 +78,7 @@ extra_params =-smp 2 [uv-guest] file = uv-guest.elf + +[css] +file = css.elf +extra_params =-device ccw-pong -- 2.17.0