From patchwork Thu Feb 22 22:27:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Uma Krishnan X-Patchwork-Id: 10236527 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5E9E160224 for ; Thu, 22 Feb 2018 22:27:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 59EFE28DE6 for ; Thu, 22 Feb 2018 22:27:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4DF6628E2F; Thu, 22 Feb 2018 22:27:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EDF6C28DE6 for ; Thu, 22 Feb 2018 22:27:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751879AbeBVW1m (ORCPT ); Thu, 22 Feb 2018 17:27:42 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:33700 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751731AbeBVW1l (ORCPT ); Thu, 22 Feb 2018 17:27:41 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w1MMO4Dn025629 for ; Thu, 22 Feb 2018 17:27:41 -0500 Received: from e12.ny.us.ibm.com (e12.ny.us.ibm.com [129.33.205.202]) by mx0b-001b2d01.pphosted.com with ESMTP id 2ga63u16k0-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 22 Feb 2018 17:27:41 -0500 Received: from localhost by e12.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 22 Feb 2018 17:27:40 -0500 Received: from b01cxnp23032.gho.pok.ibm.com (9.57.198.27) by e12.ny.us.ibm.com (146.89.104.199) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 22 Feb 2018 17:27:38 -0500 Received: from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com [9.57.199.107]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w1MMRb6h42270852; Thu, 22 Feb 2018 22:27:37 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 69F11124037; Thu, 22 Feb 2018 18:29:53 -0500 (EST) Received: from p8tul1-build.aus.stglabs.ibm.com (unknown [9.3.141.206]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP id B6482124035; Thu, 22 Feb 2018 18:29:52 -0500 (EST) From: Uma Krishnan To: linux-scsi@vger.kernel.org, James Bottomley , "Martin K. Petersen" , "Matthew R. Ochs" , "Manoj N. Kumar" Cc: linuxppc-dev@lists.ozlabs.org, Andrew Donnellan , Frederic Barrat , Christophe Lombard Subject: [PATCH 30/38] cxlflash: Support file descriptor mapping Date: Thu, 22 Feb 2018 16:27:31 -0600 X-Mailer: git-send-email 2.1.0 In-Reply-To: <1519338010-51782-1-git-send-email-ukrishn@linux.vnet.ibm.com> References: <1519338010-51782-1-git-send-email-ukrishn@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18022222-0048-0000-0000-0000023DF5D3 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008579; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000254; SDB=6.00993626; UDB=6.00504906; IPR=6.00772965; MB=3.00019695; MTD=3.00000008; XFM=3.00000015; UTC=2018-02-22 22:27:39 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18022222-0049-0000-0000-000044390131 Message-Id: <1519338451-52868-1-git-send-email-ukrishn@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-02-22_08:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1802220278 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The cxlflash core fop API requires a way to invoke the fault and release handlers of underlying transports using their native file-based APIs. This provides the core with the ability to insert selectively itself into the processing stream of these operations for cleanup. Implement these two fops to map and release when requested. Signed-off-by: Uma Krishnan --- drivers/scsi/cxlflash/ocxl_hw.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c index f090563..119481c 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.c +++ b/drivers/scsi/cxlflash/ocxl_hw.c @@ -1259,6 +1259,30 @@ static int ocxlflash_start_work(void *ctx_cookie, u64 num_irqs) afu_unmap_irq(0, ctx, i, ctx); free_afu_irqs(ctx); goto out; +}; + +/** + * ocxlflash_fd_mmap() - mmap handler for adapter file descriptor + * @file: File installed with adapter file descriptor. + * @vma: VM area associated with mapping. + * + * Return: 0 on success, -errno on failure + */ +static int ocxlflash_fd_mmap(struct file *file, struct vm_area_struct *vma) +{ + return afu_mmap(file, vma); +} + +/** + * ocxlflash_fd_release() - release the context associated with the file + * @inode: File inode pointer. + * @file: File associated with the adapter context. + * + * Return: 0 on success, -errno on failure + */ +static int ocxlflash_fd_release(struct inode *inode, struct file *file) +{ + return afu_release(inode, file); } /* Backend ops to ocxlflash services */ @@ -1284,4 +1308,6 @@ const struct cxlflash_backend_ops cxlflash_ocxl_ops = { .get_fd = ocxlflash_get_fd, .fops_get_context = ocxlflash_fops_get_context, .start_work = ocxlflash_start_work, + .fd_mmap = ocxlflash_fd_mmap, + .fd_release = ocxlflash_fd_release, };