From patchwork Fri Dec 6 16:26:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre Morel X-Patchwork-Id: 11276793 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 647A81805 for ; Fri, 6 Dec 2019 16:26:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4CD6624659 for ; Fri, 6 Dec 2019 16:26:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726575AbfLFQ0r (ORCPT ); Fri, 6 Dec 2019 11:26:47 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:18848 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726460AbfLFQ0p (ORCPT ); Fri, 6 Dec 2019 11:26:45 -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 xB6GEIYD024668 for ; Fri, 6 Dec 2019 11:26:44 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2wq9vdraq5-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 06 Dec 2019 11:26:43 -0500 Received: from localhost by e06smtp01.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) Fri, 6 Dec 2019 16:26:34 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xB6GQXfA35193034 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 6 Dec 2019 16:26:33 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6EFC952052; Fri, 6 Dec 2019 16:26:33 +0000 (GMT) Received: from oc3016276355.ibm.com (unknown [9.145.175.63]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 16DF85204F; Fri, 6 Dec 2019 16:26:33 +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 v3 9/9] s390x: css: ping pong Date: Fri, 6 Dec 2019 17:26:28 +0100 X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1575649588-6127-1-git-send-email-pmorel@linux.ibm.com> References: <1575649588-6127-1-git-send-email-pmorel@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19120616-4275-0000-0000-0000038C74AC X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19120616-4276-0000-0000-000038A01E30 Message-Id: <1575649588-6127-10-git-send-email-pmorel@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-06_05:2019-12-05,2019-12-06 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 priorityscore=1501 mlxscore=0 adultscore=0 impostorscore=0 malwarescore=0 phishscore=0 suspectscore=1 lowpriorityscore=0 clxscore=1015 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912060136 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org To test a write command with the SSCH instruction we need a QEMU device, with control unit type 0xC0CA. The PONG device is such a device. This type of device responds to PONG_WRITE requests by incrementing an integer, stored as a string at offset 0 of the CCW data. Signed-off-by: Pierre Morel --- s390x/css.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/s390x/css.c b/s390x/css.c index 54a7b38..3b5ce9d 100644 --- a/s390x/css.c +++ b/s390x/css.c @@ -23,6 +23,10 @@ #define SID_ONE 0x00010000 #define PSW_PRG_MASK (PSW_MASK_IO | PSW_MASK_EA | PSW_MASK_BA) +/* Channel Commands for PONG device */ +#define PONG_WRITE 0x21 /* Write */ +#define PONG_READ 0x22 /* Read buffer */ + struct lowcore *lowcore = (void *)0x0; static struct schib schib; @@ -259,6 +263,51 @@ unreg_cb: unregister_io_int_func(irq_io); } +static void test_ping(void) +{ + int success, result; + int cnt = 0, max = 4; + + if (senseid.cu_type != PONG_CU) { + report_skip("No PONG, no ping-pong"); + return; + } + + result = register_io_int_func(irq_io); + if (result) { + report("Could not register IRQ handler", 0); + return; + } + + while (cnt++ < max) { + snprintf(buffer, BUF_SZ, "%08x\n", cnt); + success = start_subchannel(PONG_WRITE, buffer, 8); + if (!success) { + report("start_subchannel failed", 0); + goto unreg_cb; + } + delay(100); + success = start_subchannel(PONG_READ, buffer, 8); + if (!success) { + report("start_subchannel failed", 0); + goto unreg_cb; + } + result = atol(buffer); + if (result != (cnt + 1)) { + report("Bad answer from pong: %08x - %08x", + 0, cnt, result); + goto unreg_cb; + } else + report_info("%08x - %08x", cnt, result); + + delay(100); + } + report("ping-pong count 0x%08x", 1, cnt); + +unreg_cb: + unregister_io_int_func(irq_io); +} + static struct { const char *name; void (*func)(void); @@ -266,6 +315,7 @@ static struct { { "enumerate (stsch)", test_enumerate }, { "enable (msch)", test_enable }, { "sense (ssch/tsch)", test_sense }, + { "ping-pong (ssch/tsch)", test_ping }, { NULL, NULL } };