From patchwork Thu Nov 26 01:48:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tyrel Datwyler X-Patchwork-Id: 333404 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 A2861C56201 for ; Thu, 26 Nov 2020 01:48:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3FEAF21D42 for ; Thu, 26 Nov 2020 01:48:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="srhamtFO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732185AbgKZBsn (ORCPT ); Wed, 25 Nov 2020 20:48:43 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:17310 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731956AbgKZBsm (ORCPT ); Wed, 25 Nov 2020 20:48:42 -0500 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0AQ1VMuu186026; Wed, 25 Nov 2020 20:48:33 -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=gC/vWuYTDA9qvAo5cfOWV0B5mMeAskVmH5S9vCf6JzY=; b=srhamtFOYAtPey0Sp+1sonArwZCbUZx3bCP8cVNy3B5N8ELYGZevmKSpQHofQMEfHM4F YG1bx5V+JXCZvyomG0zpqxYXhLHyvd9tVWaCZcvn8mGnFoagxYrKo+oxg6pDqlZgKAuS erUSWpN49i03d+3s/WY9J0TANVp1wcrGD22TdKzEZvdrDlpL5edIFOldySzATU4CHIDU zNEyPan9c/+qXvHDKwW4q/ttEwbWOa1mq7VlcNxdnhIHP7QtFi/kyo5K5R620pW4VP6b bfSWJJ+IDgn//v59GXkKMWkRFicOrTW+tYWJyl+5fsLFgkU05pudrZfOvGVLrCKFuQYM 1Q== Received: from ppma05wdc.us.ibm.com (1b.90.2fa9.ip4.static.sl-reverse.com [169.47.144.27]) by mx0b-001b2d01.pphosted.com with ESMTP id 3521th1cyv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Nov 2020 20:48:33 -0500 Received: from pps.filterd (ppma05wdc.us.ibm.com [127.0.0.1]) by ppma05wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0AQ1lesS018622; Thu, 26 Nov 2020 01:48:33 GMT Received: from b03cxnp08026.gho.boulder.ibm.com (b03cxnp08026.gho.boulder.ibm.com [9.17.130.18]) by ppma05wdc.us.ibm.com with ESMTP id 34xth9bpx7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 26 Nov 2020 01:48:33 +0000 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0AQ1mM7W40370676 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 26 Nov 2020 01:48:22 GMT Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A4BA46E04C; Thu, 26 Nov 2020 01:48:31 +0000 (GMT) Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5447C6E053; Thu, 26 Nov 2020 01:48:31 +0000 (GMT) Received: from vios4361.aus.stglabs.ibm.com (unknown [9.3.43.61]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 26 Nov 2020 01:48:31 +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 Subject: [PATCH 05/13] ibmvfc: add Sub-CRQ IRQ enable/disable routine Date: Wed, 25 Nov 2020 19:48:16 -0600 Message-Id: <20201126014824.123831-6-tyreld@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201126014824.123831-1-tyreld@linux.ibm.com> References: <20201126014824.123831-1-tyreld@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312, 18.0.737 definitions=2020-11-25_14:2020-11-25,2020-11-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 clxscore=1015 bulkscore=0 adultscore=0 malwarescore=0 mlxlogscore=740 suspectscore=1 priorityscore=1501 mlxscore=0 spamscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011260001 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Each Sub-CRQ has its own interrupt. A hypercall is required to toggle the IRQ state. Provide the necessary mechanism via a helper function. Signed-off-by: Tyrel Datwyler Reviewed-by: Brian King --- drivers/scsi/ibmvscsi/ibmvfc.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 571abdb48384..6eaedda4917a 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -3351,6 +3351,26 @@ static void ibmvfc_tasklet(void *data) spin_unlock_irqrestore(vhost->host->host_lock, flags); } +static int ibmvfc_toggle_scrq_irq(struct ibmvfc_sub_queue *scrq, int enable) +{ + struct device *dev = scrq->vhost->dev; + struct vio_dev *vdev = to_vio_dev(dev); + unsigned long rc; + int irq_action = H_ENABLE_VIO_INTERRUPT; + + if (!enable) + irq_action = H_DISABLE_VIO_INTERRUPT; + + rc = plpar_hcall_norets(H_VIOCTL, vdev->unit_address, irq_action, + scrq->hw_irq, 0, 0); + + if (rc) + dev_err(dev, "Couldn't %s sub-crq[%lu] irq. rc=%ld\n", + enable ? "enable" : "disable", scrq->hwq_id, rc); + + return rc; +} + /** * ibmvfc_init_tgt - Set the next init job step for the target * @tgt: ibmvfc target struct