From patchwork Wed Sep 25 16:36:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 11161111 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 15DF4112B for ; Wed, 25 Sep 2019 16:37:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F250B21D7B for ; Wed, 25 Sep 2019 16:37:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391596AbfIYQh2 (ORCPT ); Wed, 25 Sep 2019 12:37:28 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41018 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728465AbfIYQh1 (ORCPT ); Wed, 25 Sep 2019 12:37:27 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 83E4D10C030D; Wed, 25 Sep 2019 16:37:27 +0000 (UTC) Received: from thuth.com (ovpn-116-109.ams2.redhat.com [10.36.116.109]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1C58F60BF1; Wed, 25 Sep 2019 16:37:25 +0000 (UTC) From: Thomas Huth To: kvm@vger.kernel.org, Paolo Bonzini , =?utf-8?b?UmFk?= =?utf-8?b?aW0gS3LEjW3DocWZ?= Cc: David Hildenbrand , Janosch Frank Subject: [kvm-unit-tests PULL 02/17] s390x: Diag288 test Date: Wed, 25 Sep 2019 18:36:59 +0200 Message-Id: <20190925163714.27519-3-thuth@redhat.com> In-Reply-To: <20190925163714.27519-1-thuth@redhat.com> References: <20190925163714.27519-1-thuth@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.65]); Wed, 25 Sep 2019 16:37:27 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Janosch Frank 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 Reviewed-by: Thomas Huth Message-Id: <20190827074631.7184-1-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- lib/s390x/asm/arch_def.h | 1 + s390x/Makefile | 1 + s390x/diag288.c | 114 +++++++++++++++++++++++++++++++++++++++ s390x/unittests.cfg | 4 ++ 4 files changed, 120 insertions(+) create mode 100644 s390x/diag288.c diff --git a/lib/s390x/asm/arch_def.h b/lib/s390x/asm/arch_def.h index d2cd727..4bbb428 100644 --- a/lib/s390x/asm/arch_def.h +++ b/lib/s390x/asm/arch_def.h @@ -15,6 +15,7 @@ struct psw { uint64_t addr; }; +#define PSW_MASK_EXT 0x0100000000000000UL #define PSW_MASK_DAT 0x0400000000000000UL #define PSW_MASK_PSTATE 0x0001000000000000UL diff --git a/s390x/Makefile b/s390x/Makefile index 574a9a2..3453373 100644 --- a/s390x/Makefile +++ b/s390x/Makefile @@ -12,6 +12,7 @@ tests += $(TEST_DIR)/vector.elf tests += $(TEST_DIR)/gs.elf tests += $(TEST_DIR)/iep.elf tests += $(TEST_DIR)/cpumodel.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..b4934bf --- /dev/null +++ b/s390x/diag288.c @@ -0,0 +1,114 @@ +/* + * 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 = (struct lowcore *)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 void test_specs(void) +{ + report_prefix_push("specification"); + + report_prefix_push("uneven"); + expect_pgm_int(); + asm volatile("diag 1,2,0x288"); + check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); + report_prefix_pop(); + + report_prefix_push("unsupported action"); + expect_pgm_int(); + diag288(CODE_INIT, 15, 42); + check_pgm_int_code(PGM_INT_CODE_SPECIFICATION); + report_prefix_pop(); + + report_prefix_push("unsupported function"); + 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(CODE_INIT, 15, ACTION_RESTART); + check_pgm_int_code(PGM_INT_CODE_PRIVILEGED_OPERATION); + report_prefix_pop(); +} + +static void test_bite(void) +{ + uint64_t mask, time; + + /* If watchdog doesn't bite, the cpu timer does */ + asm volatile("stck %0" : "=Q" (time) : : "cc"); + time += (uint64_t)(16000 * 1000) << 12; + asm volatile("sckc %0" : : "Q" (time)); + ctl_set_bit(0, 11); + mask = extract_psw_mask(); + mask |= PSW_MASK_EXT; + load_psw_mask(mask); + + /* Arm watchdog */ + lc->restart_new_psw.mask = extract_psw_mask() & ~PSW_MASK_EXT; + diag288(CODE_INIT, 15, ACTION_RESTART); + asm volatile(" larl %r0, 1f\n" + " stg %r0, 424\n" + "0: nop\n" + " j 0b\n" + "1:"); + report("restart", true); +} + +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 db58bad..9dd288a 100644 --- a/s390x/unittests.cfg +++ b/s390x/unittests.cfg @@ -64,3 +64,7 @@ file = iep.elf [cpumodel] file = cpumodel.elf + +[diag288] +file = diag288.elf +extra_params=-device diag288,id=watchdog0 --watchdog-action inject-nmi