From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10F87C432BE for ; Fri, 27 Aug 2021 10:17:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EECC160F45 for ; Fri, 27 Aug 2021 10:17:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244931AbhH0KST (ORCPT ); Fri, 27 Aug 2021 06:18:19 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:1890 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S244905AbhH0KSR (ORCPT ); Fri, 27 Aug 2021 06:18:17 -0400 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 17RA8cUL121727 for ; Fri, 27 Aug 2021 06:17:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=pp1; bh=gH+3Pa1uCvewHefIHc5QiScz4rUaSahk+Qq8/DXcgyE=; b=osKQmZjSc4pXTAa0uyo4cXitwv+R5sT4ljrjH+t0/AxeHc3wTYZylWqwvYxv/363Qjs6 ml86yTjzw5UlLoqXZju3896OwsoQvX1LmbTLaFKW7jK0H8b225VxYuqmpNA/nCCJevz8 p0dONON59tXkNkmcws6CpULFCd+T+a1UvInGEiaHVUQs2eCU70rtGbWzj+yvJ2VvFvD0 SuIDRwGXwqGrkYM8wGF1pLQSDYiz3QIRAzzM2dsm3PT9163Wf723eqbGK75JRWNDYoib ADeMAN2HCsRLk2sfaf3FvsTY+KoY3dA/ZxcWrsAVDNF65XH/z1WGwdCa5pzZQl0wVn4H JA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 3apv5b38wh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 27 Aug 2021 06:17:28 -0400 Received: from m0098416.ppops.net (m0098416.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 17RA8o4v122654 for ; Fri, 27 Aug 2021 06:17:28 -0400 Received: from ppma03ams.nl.ibm.com (62.31.33a9.ip4.static.sl-reverse.com [169.51.49.98]) by mx0b-001b2d01.pphosted.com with ESMTP id 3apv5b38vy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 27 Aug 2021 06:17:28 -0400 Received: from pps.filterd (ppma03ams.nl.ibm.com [127.0.0.1]) by ppma03ams.nl.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 17RADEu2004885; Fri, 27 Aug 2021 10:17:26 GMT Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by ppma03ams.nl.ibm.com with ESMTP id 3ajs48ka8d-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 27 Aug 2021 10:17:25 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 17RAHMei49349096 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 27 Aug 2021 10:17:22 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BB6324C046; Fri, 27 Aug 2021 10:17:22 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 70E614C059; Fri, 27 Aug 2021 10:17:22 +0000 (GMT) Received: from oc3016276355.ibm.com (unknown [9.145.164.230]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 27 Aug 2021 10:17:22 +0000 (GMT) From: Pierre Morel To: kvm@vger.kernel.org Cc: frankja@linux.ibm.com, david@redhat.com, thuth@redhat.com, cohuck@redhat.com, imbrenda@linux.ibm.com, drjones@redhat.com Subject: [kvm-unit-tests PATCH 4/7] s390x: css: registering IRQ Date: Fri, 27 Aug 2021 12:17:17 +0200 Message-Id: <1630059440-15586-5-git-send-email-pmorel@linux.ibm.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1630059440-15586-1-git-send-email-pmorel@linux.ibm.com> References: <1630059440-15586-1-git-send-email-pmorel@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: cKAXLnKF3Xrp1hxeNpnz9U75Cl3G6qjv X-Proofpoint-ORIG-GUID: XdQkRijmYBeKZceHuVO3d7t9KBHMkHS6 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-08-27_03:2021-08-26,2021-08-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 mlxscore=0 adultscore=0 malwarescore=0 mlxlogscore=999 priorityscore=1501 spamscore=0 bulkscore=0 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2107140000 definitions=main-2108270063 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Registering IRQ for the CSS level. Signed-off-by: Pierre Morel --- lib/s390x/css.h | 21 +++++++++++++++++++++ lib/s390x/css_lib.c | 27 +++++++++++++++++++++++++-- 2 files changed, 46 insertions(+), 2 deletions(-) diff --git a/lib/s390x/css.h b/lib/s390x/css.h index 2005f4d7..0422f2e7 100644 --- a/lib/s390x/css.h +++ b/lib/s390x/css.h @@ -402,4 +402,25 @@ struct measurement_block_format1 { uint32_t irq_prio_delay_time; }; +#include +static inline void disable_io_irq(void) +{ + uint64_t mask; + + mask = extract_psw_mask(); + mask &= ~PSW_MASK_IO; + load_psw_mask(mask); +} + +static inline void enable_io_irq(void) +{ + uint64_t mask; + + mask = extract_psw_mask(); + mask |= PSW_MASK_IO; + load_psw_mask(mask); +} + +int register_css_irq_func(void (*f)(void)); +int unregister_css_irq_func(void (*f)(void)); #endif diff --git a/lib/s390x/css_lib.c b/lib/s390x/css_lib.c index 484f9c41..a89fc93c 100644 --- a/lib/s390x/css_lib.c +++ b/lib/s390x/css_lib.c @@ -350,8 +350,29 @@ bool css_disable_mb(int schid) return retry_count > 0; } -static struct irb irb; +static void (*css_irq_func)(void); + +int register_css_irq_func(void (*f)(void)) +{ + if (css_irq_func) + return -1; + css_irq_func = f; + assert(register_io_int_func(css_irq_io) == 0); + enable_io_isc(0x80 >> IO_SCH_ISC); + return 0; +} +int unregister_css_irq_func(void (*f)(void)) +{ + if (css_irq_func != f) + return -1; + enable_io_isc(0); + unregister_io_int_func(css_irq_io); + css_irq_func = NULL; + return 0; +} + +static struct irb irb; void css_irq_io(void) { int ret = 0; @@ -386,7 +407,9 @@ void css_irq_io(void) report(0, "tsch reporting sch %08x as not operational", sid); break; case 0: - /* Stay humble on success */ + /* Call upper level IRQ routine */ + if (css_irq_func) + css_irq_func(); break; } pop: -- 2.25.1