From patchwork Tue Aug 1 07:57:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dong Jia Shi X-Patchwork-Id: 796109 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3xM7yV4BL9z9tWW for ; Tue, 1 Aug 2017 17:59:46 +1000 (AEST) Received: from localhost ([::1]:34999 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dcS5g-00011O-Ez for incoming@patchwork.ozlabs.org; Tue, 01 Aug 2017 03:59:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35533) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dcS3s-0008Kf-2K for qemu-devel@nongnu.org; Tue, 01 Aug 2017 03:57:53 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dcS3o-0006CZ-Vo for qemu-devel@nongnu.org; Tue, 01 Aug 2017 03:57:52 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:45166 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 1dcS3o-0006By-QC for qemu-devel@nongnu.org; Tue, 01 Aug 2017 03:57:48 -0400 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v717rhbm101350 for ; Tue, 1 Aug 2017 03:57:47 -0400 Received: from e13.ny.us.ibm.com (e13.ny.us.ibm.com [129.33.205.203]) by mx0a-001b2d01.pphosted.com with ESMTP id 2c2ngf8fjp-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 01 Aug 2017 03:57:46 -0400 Received: from localhost by e13.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 1 Aug 2017 03:57:43 -0400 Received: from b01ledav003.gho.pok.ibm.com (b01ledav003.gho.pok.ibm.com [9.57.199.108]) by b01cxnp22033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v717vg2W22478914; Tue, 1 Aug 2017 07:57:42 GMT Received: from b01ledav003.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 92B95B2050; Tue, 1 Aug 2017 03:55:10 -0400 (EDT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by b01ledav003.gho.pok.ibm.com (Postfix) with ESMTP id A8D3EB2046; Tue, 1 Aug 2017 03:55:09 -0400 (EDT) From: Dong Jia Shi To: qemu-devel@nongnu.org Date: Tue, 1 Aug 2017 09:57:27 +0200 X-Mailer: git-send-email 2.11.2 In-Reply-To: <20170801075727.31335-1-bjsdjshi@linux.vnet.ibm.com> References: <20170801075727.31335-1-bjsdjshi@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17080107-0008-0000-0000-00000267B00E X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007463; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000214; SDB=6.00895903; UDB=6.00448125; IPR=6.00676090; BA=6.00005504; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00016477; XFM=3.00000015; UTC=2017-08-01 07:57:45 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17080107-0009-0000-0000-000036399B7F Message-Id: <20170801075727.31335-3-bjsdjshi@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-08-01_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1706020000 definitions=main-1708010132 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 v2 2/2] s390x/css: generate solicited crw for rchp completion signaling 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: pasic@linux.vnet.ibm.com, cohuck@redhat.com, pmorel@linux.vnet.ibm.com, agraf@suse.de, borntraeger@de.ibm.com, bjsdjshi@linux.vnet.ibm.com, rth@twiddle.net Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" A successful completion of rchp should signal a solicited channel path initialized CRW (channel report word), while the current implementation always generates an un-solicited one. Let's fix this. Reported-by: Halil Pasic Signed-off-by: Dong Jia Shi --- hw/s390x/css.c | 16 ++++++++++------ include/hw/s390x/css.h | 3 ++- 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 5321ca016b..bfa56f4b12 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -1745,10 +1745,10 @@ int css_do_rchp(uint8_t cssid, uint8_t chpid) } /* We don't really use a channel path, so we're done here. */ - css_queue_crw(CRW_RSC_CHP, CRW_ERC_INIT, + css_queue_crw(CRW_RSC_CHP, CRW_ERC_INIT, 1, channel_subsys.max_cssid > 0 ? 1 : 0, chpid); if (channel_subsys.max_cssid > 0) { - css_queue_crw(CRW_RSC_CHP, CRW_ERC_INIT, 0, real_cssid << 8); + css_queue_crw(CRW_RSC_CHP, CRW_ERC_INIT, 1, 0, real_cssid << 8); } return 0; } @@ -2028,7 +2028,8 @@ void css_subch_assign(uint8_t cssid, uint8_t ssid, uint16_t schid, } } -void css_queue_crw(uint8_t rsc, uint8_t erc, int chain, uint16_t rsid) +void css_queue_crw(uint8_t rsc, uint8_t erc, int solicited, + int chain, uint16_t rsid) { CrwContainer *crw_cont; @@ -2040,6 +2041,9 @@ void css_queue_crw(uint8_t rsc, uint8_t erc, int chain, uint16_t rsid) return; } crw_cont->crw.flags = (rsc << 8) | erc; + if (solicited) { + crw_cont->crw.flags |= CRW_FLAGS_MASK_S; + } if (chain) { crw_cont->crw.flags |= CRW_FLAGS_MASK_C; } @@ -2086,9 +2090,9 @@ void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid, } chain_crw = (channel_subsys.max_ssid > 0) || (channel_subsys.max_cssid > 0); - css_queue_crw(CRW_RSC_SUBCH, CRW_ERC_IPI, chain_crw ? 1 : 0, schid); + css_queue_crw(CRW_RSC_SUBCH, CRW_ERC_IPI, 0, chain_crw ? 1 : 0, schid); if (chain_crw) { - css_queue_crw(CRW_RSC_SUBCH, CRW_ERC_IPI, 0, + css_queue_crw(CRW_RSC_SUBCH, CRW_ERC_IPI, 0, 0, (guest_cssid << 8) | (ssid << 4)); } /* RW_ERC_IPI --> clear pending interrupts */ @@ -2103,7 +2107,7 @@ void css_generate_chp_crws(uint8_t cssid, uint8_t chpid) void css_generate_css_crws(uint8_t cssid) { if (!channel_subsys.sei_pending) { - css_queue_crw(CRW_RSC_CSS, CRW_ERC_EVENT, 0, cssid); + css_queue_crw(CRW_RSC_CSS, CRW_ERC_EVENT, 0, 0, cssid); } channel_subsys.sei_pending = true; } diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h index 5c5fe6b202..5b017e1fc3 100644 --- a/include/hw/s390x/css.h +++ b/include/hw/s390x/css.h @@ -150,7 +150,8 @@ void copy_scsw_to_guest(SCSW *dest, const SCSW *src); void css_inject_io_interrupt(SubchDev *sch); void css_reset(void); void css_reset_sch(SubchDev *sch); -void css_queue_crw(uint8_t rsc, uint8_t erc, int chain, uint16_t rsid); +void css_queue_crw(uint8_t rsc, uint8_t erc, int solicited, + int chain, uint16_t rsid); void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid, int hotplugged, int add); void css_generate_chp_crws(uint8_t cssid, uint8_t chpid);