From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:4716 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729696AbfHTK4O (ORCPT ); Tue, 20 Aug 2019 06:56:14 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x7KAqwpi080519 for ; Tue, 20 Aug 2019 06:56:13 -0400 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2ugfc7rfqy-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 20 Aug 2019 06:56:13 -0400 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 20 Aug 2019 11:56:10 +0100 From: Janosch Frank Subject: [kvm-unit-tests PATCH 2/3] s390x: Diag288 test Date: Tue, 20 Aug 2019 12:55:49 +0200 In-Reply-To: <20190820105550.4991-1-frankja@linux.ibm.com> References: <20190820105550.4991-1-frankja@linux.ibm.com> Message-Id: <20190820105550.4991-3-frankja@linux.ibm.com> Sender: linux-s390-owner@vger.kernel.org List-ID: To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, david@redhat.com, thuth@redhat.com A small test for the watchdog via diag288. Minimum timer value is 15 (seconds) and the only supported action with QEMU is restart. Signed-off-by: Janosch Frank --- s390x/Makefile | 1 + s390x/diag288.c | 111 ++++++++++++++++++++++++++++++++++++++++++++ s390x/unittests.cfg | 4 ++ 3 files changed, 116 insertions(+) create mode 100644 s390x/diag288.c diff --git a/s390x/Makefile b/s390x/Makefile index 1f21ddb..b654c56 100644 --- a/s390x/Makefile +++ b/s390x/Makefile @@ -11,6 +11,7 @@ tests += $(TEST_DIR)/cmm.elf tests += $(TEST_DIR)/vector.elf tests += $(TEST_DIR)/gs.elf tests += $(TEST_DIR)/iep.elf +tests += $(TEST_DIR)/diag288.elf tests_binary = $(patsubst %.elf,%.bin,$(tests)) all: directories test_cases test_cases_binary diff --git a/s390x/diag288.c b/s390x/diag288.c new file mode 100644 index 0000000..5abcec4 --- /dev/null +++ b/s390x/diag288.c @@ -0,0 +1,111 @@ +/* + * Timer Event DIAG288 test + * + * Copyright (c) 2019 IBM Corp + * + * Authors: + * Janosch Frank + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU Library General Public License version 2. + */ + +#include +#include +#include + +struct lowcore *lc = (void *)0x0; + +#define CODE_INIT 0 +#define CODE_CHANGE 1 +#define CODE_CANCEL 2 + +#define ACTION_RESTART 0 + +static inline void diag288(unsigned long code, unsigned long time, + unsigned long action) +{ + register unsigned long fc asm("0") = code; + register unsigned long tm asm("1") = time; + register unsigned long ac asm("2") = action; + + asm volatile("diag %0,%2,0x288" + : : "d" (fc), "d" (tm), "d" (ac)); +} + +static inline void diag288_uneven(void) +{ + register unsigned long fc asm("1") = 0; + register unsigned long time asm("1") = 15; + register unsigned long action asm("2") = 0; + + asm volatile("diag %0,%2,0x288" + : : "d" (fc), "d" (time), "d" (action)); +} + +static void test_specs(void) +{ + report_prefix_push("spec ex"); + + report_prefix_push("uneven"); + expect_pgm_int(); + diag288_uneven(); + check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); + report_prefix_pop(); + + report_prefix_push("unsup act"); + expect_pgm_int(); + diag288(CODE_INIT, 15, 42); + check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); + report_prefix_pop(); + + report_prefix_push("unsup fctn"); + expect_pgm_int(); + diag288(42, 15, ACTION_RESTART); + check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); + report_prefix_pop(); + + report_prefix_push("no init"); + expect_pgm_int(); + diag288(CODE_CANCEL, 15, ACTION_RESTART); + check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); + report_prefix_pop(); + + report_prefix_push("min timer"); + expect_pgm_int(); + diag288(CODE_INIT, 14, ACTION_RESTART); + check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); + report_prefix_pop(); + + report_prefix_pop(); +} + +static void test_priv(void) +{ + report_prefix_push("privileged"); + expect_pgm_int(); + enter_pstate(); + diag288(0, 15, 0); + check_pgm_int_code(PGM_INT_CODE_PRIVILEGED_OPERATION); + report_prefix_pop(); +} + +static void test_bite(void) +{ + if (lc->restart_old_psw.addr) { + report("restart", true); + return; + } + lc->restart_new_psw.addr = (uint64_t)test_bite; + diag288(CODE_INIT, 15, ACTION_RESTART); + while(1) {}; +} + +int main(void) +{ + report_prefix_push("diag288"); + test_priv(); + test_specs(); + test_bite(); + return report_summary(); +} diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg index 546b1f2..ca10f38 100644 --- a/s390x/unittests.cfg +++ b/s390x/unittests.cfg @@ -61,3 +61,7 @@ file = gs.elf [iep] file = iep.elf + +[diag288] +file = diag288.elf +extra_params=-device diag288,id=watchdog0 --watchdog-action inject-nmi \ No newline at end of file -- 2.17.0