From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:11674 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726575AbfLFQ0q (ORCPT ); Fri, 6 Dec 2019 11:26:46 -0500 Received: from pps.filterd (m0127361.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xB6GEIYH024668 for ; Fri, 6 Dec 2019 11:26:45 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2wq9vdrap4-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 06 Dec 2019 11:26:42 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 6 Dec 2019 16:26:36 -0000 From: Pierre Morel Subject: [kvm-unit-tests PATCH v3 6/9] s390x: css: stsch, enumeration test Date: Fri, 6 Dec 2019 17:26:25 +0100 In-Reply-To: <1575649588-6127-1-git-send-email-pmorel@linux.ibm.com> References: <1575649588-6127-1-git-send-email-pmorel@linux.ibm.com> Message-Id: <1575649588-6127-7-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 for testing the channel subsystem is to enumerate the css and retrieve the css devices. This tests the success of STSCH I/O instruction. Signed-off-by: Pierre Morel --- lib/s390x/css.h | 1 + s390x/Makefile | 2 ++ s390x/css.c | 82 +++++++++++++++++++++++++++++++++++++++++++++ s390x/unittests.cfg | 4 +++ 4 files changed, 89 insertions(+) create mode 100644 s390x/css.c diff --git a/lib/s390x/css.h b/lib/s390x/css.h index 6f19bb5..d37227b 100644 --- a/lib/s390x/css.h +++ b/lib/s390x/css.h @@ -82,6 +82,7 @@ struct pmcw { uint8_t chpid[8]; uint16_t flags2; }; +#define PMCW_CHANNEL_TYPE(pmcw) (pmcw->flags >> 21) struct schib { struct pmcw pmcw; diff --git a/s390x/Makefile b/s390x/Makefile index 3744372..9ebbb84 100644 --- a/s390x/Makefile +++ b/s390x/Makefile @@ -16,6 +16,7 @@ tests += $(TEST_DIR)/diag288.elf tests += $(TEST_DIR)/stsi.elf tests += $(TEST_DIR)/skrf.elf tests += $(TEST_DIR)/smp.elf +tests += $(TEST_DIR)/css.elf tests_binary = $(patsubst %.elf,%.bin,$(tests)) all: directories test_cases test_cases_binary @@ -50,6 +51,7 @@ 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..3d4a986 --- /dev/null +++ b/s390x/css.c @@ -0,0 +1,82 @@ +/* + * 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 + +#define SID_ONE 0x00010000 + +static struct schib schib; + +static const char *Channel_type[4] = { + "I/O", "CHSC", "MSG", "EADM" +}; + +static int test_device_sid; + +static void test_enumerate(void) +{ + struct pmcw *pmcw = &schib.pmcw; + int scn; + int cc, i; + int found = 0; + + for (scn = 0; scn < 0xffff; scn++) { + cc = stsch(scn|SID_ONE, &schib); + if (!cc && (pmcw->flags & PMCW_DNV)) { + report_info("SID %04x Type %s PIM %x", scn, + Channel_type[PMCW_CHANNEL_TYPE(pmcw)], + 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 (cc == 3) /* cc = 3 means no more channel in CSS */ + break; + if (found && !test_device_sid) + test_device_sid = scn|SID_ONE; + } + if (!found) { + report("Tested %d devices, none found", 0, scn); + return; + } + report("Tested %d devices, %d found", 1, scn, 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 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 f1b07cd..1755d9e 100644 --- a/s390x/unittests.cfg +++ b/s390x/unittests.cfg @@ -75,3 +75,7 @@ file = stsi.elf [smp] file = smp.elf extra_params =-smp 2 + +[css] +file = css.elf +extra_params =-device ccw-pong -- 2.17.0