From patchwork Thu Jan 14 20:31:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyrel Datwyler X-Patchwork-Id: 363253 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 87D91C4321A for ; Thu, 14 Jan 2021 20:33:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 516E223A56 for ; Thu, 14 Jan 2021 20:33:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727273AbhANUda (ORCPT ); Thu, 14 Jan 2021 15:33:30 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:64916 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727703AbhANUcn (ORCPT ); Thu, 14 Jan 2021 15:32:43 -0500 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 10EK3JEx056320; Thu, 14 Jan 2021 15:31:59 -0500 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 : mime-version : content-transfer-encoding; s=pp1; bh=OVJmnGCGIYi28nfmWuMS2jM2uI1tF69N45Tl2rSaKQ4=; b=jBVzLL5SKWynYgYRVMSwy53M2PwbOrzJ9D76mZosjRfGZ1Ko81nL0xAoX8mwK8rvr9VN Z16yYUELMx4JxisdLZJQtUU8no8V9z73z638/6KAfOWyOy70fPJyw13nKcX0W6Rewtgs pPku1t6FZ3Dg/cKjC3TOT27dppEXFtfdj/wX2M8t4Bn7/vFM0DpBPH+3I263b9IfqWdJ p7J3H/44ZXZxDaexkJmniU3uwCpM0uegHJY2qZNDJdMQiYvs8HgWDlCpgzFidXSk7L00 KrBmDjD8oTAwM0aSOWoPGfX5A6Q/HF4jSlCmKgRDP56Yx8CLUxxmuCdwmElVfLcGuWy+ sg== Received: from ppma03dal.us.ibm.com (b.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.11]) by mx0a-001b2d01.pphosted.com with ESMTP id 362vca94eh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 14 Jan 2021 15:31:59 -0500 Received: from pps.filterd (ppma03dal.us.ibm.com [127.0.0.1]) by ppma03dal.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 10EKS8W2026137; Thu, 14 Jan 2021 20:31:58 GMT Received: from b03cxnp08028.gho.boulder.ibm.com (b03cxnp08028.gho.boulder.ibm.com [9.17.130.20]) by ppma03dal.us.ibm.com with ESMTP id 35y449sneh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 14 Jan 2021 20:31:58 +0000 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 10EKVu7E26739060 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 14 Jan 2021 20:31:57 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E36C66E04C; Thu, 14 Jan 2021 20:31:56 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 908CB6E052; Thu, 14 Jan 2021 20:31:56 +0000 (GMT) Received: from vios4361.aus.stglabs.ibm.com (unknown [9.3.43.61]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 14 Jan 2021 20:31:56 +0000 (GMT) From: Tyrel Datwyler To: james.bottomley@hansenpartnership.com Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, brking@linux.ibm.com, Tyrel Datwyler , Brian King Subject: [PATCH v5 16/21] ibmvfc: register Sub-CRQ handles with VIOS during channel setup Date: Thu, 14 Jan 2021 14:31:43 -0600 Message-Id: <20210114203148.246656-17-tyreld@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210114203148.246656-1-tyreld@linux.ibm.com> References: <20210114203148.246656-1-tyreld@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343, 18.0.737 definitions=2021-01-14_07:2021-01-14,2021-01-14 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 clxscore=1015 malwarescore=0 priorityscore=1501 impostorscore=0 mlxscore=0 phishscore=0 adultscore=0 suspectscore=0 bulkscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101140115 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org If the ibmvfc client adapter requests channels it must submit a number of Sub-CRQ handles matching the number of channels being requested. The VIOS in its response will overwrite the actual number of channel resources allocated which may be less than what was requested. The client then must store the VIOS Sub-CRQ handle for each queue. This VIOS handle is needed as a parameter with h_send_sub_crq(). Signed-off-by: Tyrel Datwyler Reviewed-by: Brian King --- drivers/scsi/ibmvscsi/ibmvfc.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 865b87881d86..578e27180f10 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -4627,15 +4627,35 @@ static void ibmvfc_discover_targets(struct ibmvfc_host *vhost) static void ibmvfc_channel_setup_done(struct ibmvfc_event *evt) { struct ibmvfc_host *vhost = evt->vhost; + struct ibmvfc_channel_setup *setup = vhost->channel_setup_buf; + struct ibmvfc_scsi_channels *scrqs = &vhost->scsi_scrqs; u32 mad_status = be16_to_cpu(evt->xfer_iu->channel_setup.common.status); int level = IBMVFC_DEFAULT_LOG_LEVEL; + int flags, active_queues, i; ibmvfc_free_event(evt); switch (mad_status) { case IBMVFC_MAD_SUCCESS: ibmvfc_dbg(vhost, "Channel Setup succeded\n"); + flags = be32_to_cpu(setup->flags); vhost->do_enquiry = 0; + active_queues = be32_to_cpu(setup->num_scsi_subq_channels); + scrqs->active_queues = active_queues; + + if (flags & IBMVFC_CHANNELS_CANCELED) { + ibmvfc_dbg(vhost, "Channels Canceled\n"); + vhost->using_channels = 0; + } else { + if (active_queues) + vhost->using_channels = 1; + for (i = 0; i < active_queues; i++) + scrqs->scrqs[i].vios_cookie = + be64_to_cpu(setup->channel_handles[i]); + + ibmvfc_dbg(vhost, "Using %u channels\n", + vhost->scsi_scrqs.active_queues); + } break; case IBMVFC_MAD_FAILED: level += ibmvfc_retry_host_init(vhost); @@ -4659,9 +4679,19 @@ static void ibmvfc_channel_setup(struct ibmvfc_host *vhost) struct ibmvfc_channel_setup_mad *mad; struct ibmvfc_channel_setup *setup_buf = vhost->channel_setup_buf; struct ibmvfc_event *evt = ibmvfc_get_event(&vhost->crq); + struct ibmvfc_scsi_channels *scrqs = &vhost->scsi_scrqs; + unsigned int num_channels = + min(vhost->client_scsi_channels, vhost->max_vios_scsi_channels); + int i; memset(setup_buf, 0, sizeof(*setup_buf)); - setup_buf->flags = cpu_to_be32(IBMVFC_CANCEL_CHANNELS); + if (num_channels == 0) + setup_buf->flags = cpu_to_be32(IBMVFC_CANCEL_CHANNELS); + else { + setup_buf->num_scsi_subq_channels = cpu_to_be32(num_channels); + for (i = 0; i < num_channels; i++) + setup_buf->channel_handles[i] = cpu_to_be64(scrqs->scrqs[i].cookie); + } ibmvfc_init_event(evt, ibmvfc_channel_setup_done, IBMVFC_MAD_FORMAT); mad = &evt->iu.channel_setup;