From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37865) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dd473-0005gy-8U for qemu-devel@nongnu.org; Wed, 02 Aug 2017 20:35:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dd46z-0005Jd-6j for qemu-devel@nongnu.org; Wed, 02 Aug 2017 20:35:41 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:60367 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 1dd46z-0005Ij-0Y for qemu-devel@nongnu.org; Wed, 02 Aug 2017 20:35:37 -0400 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v730YMXZ105185 for ; Wed, 2 Aug 2017 20:35:35 -0400 Received: from e19.ny.us.ibm.com (e19.ny.us.ibm.com [129.33.205.209]) by mx0b-001b2d01.pphosted.com with ESMTP id 2c3jur157c-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 02 Aug 2017 20:35:34 -0400 Received: from localhost by e19.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 2 Aug 2017 20:35:34 -0400 From: Dong Jia Shi Date: Thu, 3 Aug 2017 02:35:27 +0200 In-Reply-To: <20170803003527.86979-1-bjsdjshi@linux.vnet.ibm.com> References: <20170803003527.86979-1-bjsdjshi@linux.vnet.ibm.com> Message-Id: <20170803003527.86979-3-bjsdjshi@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v3 2/2] s390x/css: generate solicited crw for rchp completion signaling List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: cohuck@redhat.com, borntraeger@de.ibm.com, agraf@suse.de, rth@twiddle.net, bjsdjshi@linux.vnet.ibm.com, pasic@linux.vnet.ibm.com, pmorel@linux.vnet.ibm.com 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 Reviewed-by: Halil Pasic --- 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); -- 2.11.2