From nobody Mon Feb 9 07:05:50 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1493385419392198.99621853535916; Fri, 28 Apr 2017 06:16:59 -0700 (PDT) Received: from localhost ([::1]:37071 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d45lZ-00083t-J8 for importer@patchew.org; Fri, 28 Apr 2017 09:16:57 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51215) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d45fH-0002iz-63 for qemu-devel@nongnu.org; Fri, 28 Apr 2017 09:10:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d45fC-0005o7-NC for qemu-devel@nongnu.org; Fri, 28 Apr 2017 09:10:27 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:59597 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d45fC-0005o0-GT for qemu-devel@nongnu.org; Fri, 28 Apr 2017 09:10:22 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v3SDA7Go086644 for ; Fri, 28 Apr 2017 09:10:21 -0400 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0b-001b2d01.pphosted.com with ESMTP id 2a45d7b5rv-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 28 Apr 2017 09:10:21 -0400 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 28 Apr 2017 07:10:16 -0600 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v3SDAFPf11469062; Fri, 28 Apr 2017 06:10:15 -0700 Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0339C6E03D; Fri, 28 Apr 2017 07:10:15 -0600 (MDT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP id 7BB8F6E035; Fri, 28 Apr 2017 07:10:13 -0600 (MDT) From: Dong Jia Shi To: kvm@vger.kernel.org, linux-s390@vger.kernel.org, qemu-devel@nongnu.org Date: Fri, 28 Apr 2017 15:09:44 +0200 X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170428130951.44771-1-bjsdjshi@linux.vnet.ibm.com> References: <20170428130951.44771-1-bjsdjshi@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17042813-0004-0000-0000-0000120C293A X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006989; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000208; SDB=6.00853583; UDB=6.00422111; IPR=6.00632525; BA=6.00005316; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00015219; XFM=3.00000014; UTC=2017-04-28 13:10:18 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17042813-0005-0000-0000-00007EFAF10D Message-Id: <20170428130951.44771-7-bjsdjshi@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-04-28_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=2 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1704280192 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH v6 06/13] s390x/css: device support for s390-ccw passthrough X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: cornelia.huck@de.ibm.com, borntraeger@de.ibm.com, bjsdjshi@linux.vnet.ibm.com, alex.williamson@redhat.com, agraf@suse.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" In order to support subchannels pass-through, we introduce a s390 subchannel device called "s390-ccw" to hold the real subchannel info. The s390-ccw devices inherit from the abstract CcwDevice which connect to the existing virtual-css-bus. Signed-off-by: Dong Jia Shi --- hw/s390x/Makefile.objs | 1 + hw/s390x/s390-ccw.c | 135 +++++++++++++++++++++++++++++++++++++++++++++= ++++ hw/s390x/s390-ccw.h | 38 ++++++++++++++ 3 files changed, 174 insertions(+) create mode 100644 hw/s390x/s390-ccw.c create mode 100644 hw/s390x/s390-ccw.h diff --git a/hw/s390x/Makefile.objs b/hw/s390x/Makefile.objs index 41ac4ec..72a3d37 100644 --- a/hw/s390x/Makefile.objs +++ b/hw/s390x/Makefile.objs @@ -13,3 +13,4 @@ obj-y +=3D ccw-device.o obj-y +=3D s390-pci-bus.o s390-pci-inst.o obj-y +=3D s390-skeys.o obj-$(CONFIG_KVM) +=3D s390-skeys-kvm.o +obj-y +=3D s390-ccw.o diff --git a/hw/s390x/s390-ccw.c b/hw/s390x/s390-ccw.c new file mode 100644 index 0000000..8b4b9cf --- /dev/null +++ b/hw/s390x/s390-ccw.c @@ -0,0 +1,135 @@ +/* + * s390 CCW Assignment Support + * + * Copyright 2017 IBM Corp + * Author(s): Dong Jia Shi + * Xiao Feng Ren + * Pierre Morel + * + * This work is licensed under the terms of the GNU GPL, version 2 + * or (at your option) any later version. See the COPYING file in the + * top-level directory. + */ +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "hw/sysbus.h" +#include "libgen.h" +#include "hw/s390x/css.h" +#include "hw/s390x/css-bridge.h" +#include "s390-ccw.h" + +static void s390_ccw_get_dev_info(S390CCWDevice *cdev, + char *sysfsdev, + Error **errp) +{ + unsigned int cssid, ssid, devid; + char dev_path[PATH_MAX] =3D {0}, *tmp; + + if (!sysfsdev) { + error_setg(errp, "No host device provided"); + error_append_hint(errp, + "Use -device vfio-ccw,sysfsdev=3DPATH_TO_DEVICE\= n"); + return; + } + + if (!realpath(sysfsdev, dev_path)) { + error_setg(errp, "Host device '%s' not found", sysfsdev); + return; + } + + cdev->mdevid =3D g_strdup(basename(dev_path)); + + tmp =3D basename(dirname(dev_path)); + sscanf(tmp, "%2x.%1x.%4x", &cssid, &ssid, &devid); + + cdev->hostid.cssid =3D cssid; + cdev->hostid.ssid =3D ssid; + cdev->hostid.devid =3D devid; + cdev->hostid.valid =3D true; +} + +static void s390_ccw_realize(S390CCWDevice *cdev, char *sysfsdev, Error **= errp) +{ + CcwDevice *ccw_dev =3D CCW_DEVICE(cdev); + CCWDeviceClass *ck =3D CCW_DEVICE_GET_CLASS(ccw_dev); + DeviceState *parent =3D DEVICE(ccw_dev); + BusState *qbus =3D qdev_get_parent_bus(parent); + VirtualCssBus *cbus =3D VIRTUAL_CSS_BUS(qbus); + SubchDev *sch; + int ret; + Error *err =3D NULL; + + s390_ccw_get_dev_info(cdev, sysfsdev, errp); + if (*errp) { + return; + } + + sch =3D css_create_sch(ccw_dev->devno, false, cbus->squash_mcss, errp); + if (!sch) { + return; + } + sch->driver_data =3D cdev; + + ccw_dev->sch =3D sch; + ret =3D css_sch_build_schib(sch, &cdev->hostid); + if (ret) { + error_setg(&err, "%s: Failed to build initial schib: %d", + __func__, ret); + goto out_err; + } + + ck->realize(ccw_dev, &err); + if (err) { + goto out_err; + } + + css_generate_sch_crws(sch->cssid, sch->ssid, sch->schid, + parent->hotplugged, 1); + return; + +out_err: + error_propagate(errp, err); + css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NULL); + ccw_dev->sch =3D NULL; + g_free(sch); +} + +static void s390_ccw_unrealize(S390CCWDevice *cdev, Error **errp) +{ + CcwDevice *ccw_dev =3D CCW_DEVICE(cdev); + SubchDev *sch =3D ccw_dev->sch; + + if (sch) { + css_subch_assign(sch->cssid, sch->ssid, sch->schid, sch->devno, NU= LL); + g_free(sch); + ccw_dev->sch =3D NULL; + } + + g_free(cdev->mdevid); +} + +static void s390_ccw_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc =3D DEVICE_CLASS(klass); + S390CCWDeviceClass *cdc =3D S390_CCW_DEVICE_CLASS(klass); + + dc->bus_type =3D TYPE_VIRTUAL_CSS_BUS; + cdc->realize =3D s390_ccw_realize; + cdc->unrealize =3D s390_ccw_unrealize; +} + +static const TypeInfo s390_ccw_info =3D { + .name =3D TYPE_S390_CCW, + .parent =3D TYPE_CCW_DEVICE, + .instance_size =3D sizeof(S390CCWDevice), + .class_size =3D sizeof(S390CCWDeviceClass), + .class_init =3D s390_ccw_class_init, + .abstract =3D true, +}; + +static void register_s390_ccw_type(void) +{ + type_register_static(&s390_ccw_info); +} + +type_init(register_s390_ccw_type) diff --git a/hw/s390x/s390-ccw.h b/hw/s390x/s390-ccw.h new file mode 100644 index 0000000..b58d8e9 --- /dev/null +++ b/hw/s390x/s390-ccw.h @@ -0,0 +1,38 @@ +/* + * s390 CCW Assignment Support + * + * Copyright 2017 IBM Corp. + * Author(s): Dong Jia Shi + * Xiao Feng Ren + * + * This work is licensed under the terms of the GNU GPL, version 2 or (at + * your option) any later version. See the COPYING file in the top-level + * directory. + */ + +#ifndef HW_S390_CCW_H +#define HW_S390_CCW_H + +#include "hw/s390x/ccw-device.h" + +#define TYPE_S390_CCW "s390-ccw" +#define S390_CCW_DEVICE(obj) \ + OBJECT_CHECK(S390CCWDevice, (obj), TYPE_S390_CCW) +#define S390_CCW_DEVICE_CLASS(klass) \ + OBJECT_CLASS_CHECK(S390CCWDeviceClass, (klass), TYPE_S390_CCW) +#define S390_CCW_DEVICE_GET_CLASS(obj) \ + OBJECT_GET_CLASS(S390CCWDeviceClass, (obj), TYPE_S390_CCW) + +typedef struct S390CCWDevice { + CcwDevice parent_obj; + CssDevId hostid; + char *mdevid; +} S390CCWDevice; + +typedef struct S390CCWDeviceClass { + CCWDeviceClass parent_class; + void (*realize)(S390CCWDevice *dev, char *sysfsdev, Error **errp); + void (*unrealize)(S390CCWDevice *dev, Error **errp); +} S390CCWDeviceClass; + +#endif --=20 2.10.2