From patchwork Mon Feb 26 22:21:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Uma Krishnan X-Patchwork-Id: 10243797 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 500E2602A0 for ; Mon, 26 Feb 2018 22:21:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3339C2A42E for ; Mon, 26 Feb 2018 22:21:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 277D22A43B; Mon, 26 Feb 2018 22:21:41 +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 BA92F2A42E for ; Mon, 26 Feb 2018 22:21:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751505AbeBZWVk (ORCPT ); Mon, 26 Feb 2018 17:21:40 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:50672 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750877AbeBZWVj (ORCPT ); Mon, 26 Feb 2018 17:21:39 -0500 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w1QMJP5C123097 for ; Mon, 26 Feb 2018 17:21:39 -0500 Received: from e35.co.us.ibm.com (e35.co.us.ibm.com [32.97.110.153]) by mx0a-001b2d01.pphosted.com with ESMTP id 2gcqcvr1bn-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 26 Feb 2018 17:21:38 -0500 Received: from localhost by e35.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 26 Feb 2018 15:21:38 -0700 Received: from b03cxnp07028.gho.boulder.ibm.com (9.17.130.15) by e35.co.us.ibm.com (192.168.1.135) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 26 Feb 2018 15:21:36 -0700 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w1QMLave11928026; Mon, 26 Feb 2018 15:21:36 -0700 Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 06B8E6E035; Mon, 26 Feb 2018 15:21:36 -0700 (MST) Received: from p8tul1-build.aus.stglabs.ibm.com (unknown [9.3.141.206]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP id 91F146E03A; Mon, 26 Feb 2018 15:21:35 -0700 (MST) 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 v2 10/38] cxlflash: Setup AFU PASID Date: Mon, 26 Feb 2018 16:21:33 -0600 X-Mailer: git-send-email 2.1.0 In-Reply-To: <1519683513-16731-1-git-send-email-ukrishn@linux.vnet.ibm.com> References: <1519683513-16731-1-git-send-email-ukrishn@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18022622-0012-0000-0000-000015CEF634 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008601; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000254; SDB=6.00995539; UDB=6.00506039; IPR=6.00774867; MB=3.00019751; MTD=3.00000008; XFM=3.00000015; UTC=2018-02-26 22:21:38 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18022622-0013-0000-0000-000051A691B3 Message-Id: <1519683693-17113-1-git-send-email-ukrishn@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-02-26_08:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 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-1802260280 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 Per the OCXL specification, the maximum PASID supported by the AFU is indicated by a field within the configuration space. Similar to acTags, implementations can choose to use any sub-range of PASID within their assigned range. For cxlflash, the entire range is used. Signed-off-by: Uma Krishnan Acked-by: Matthew R. Ochs Reviewed-by: Andrew Donnellan Reviewed-by: Frederic Barrat --- drivers/scsi/cxlflash/ocxl_hw.c | 3 +++ drivers/scsi/cxlflash/ocxl_hw.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c index d01847d9..bd86eef 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.c +++ b/drivers/scsi/cxlflash/ocxl_hw.c @@ -111,6 +111,9 @@ static int ocxlflash_config_afu(struct pci_dev *pdev, struct ocxl_hw_afu *afu) dev_dbg(dev, "%s: acTag base=%d enabled=%d\n", __func__, base, count); afu->afu_actag_base = base; afu->afu_actag_enabled = count; + afu->max_pasid = 1 << acfg->pasid_supported_log; + + ocxl_config_set_afu_pasid(pdev, pos, 0, acfg->pasid_supported_log); out: return rc; } diff --git a/drivers/scsi/cxlflash/ocxl_hw.h b/drivers/scsi/cxlflash/ocxl_hw.h index 9c675fa..a6f7796 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.h +++ b/drivers/scsi/cxlflash/ocxl_hw.h @@ -24,4 +24,6 @@ struct ocxl_hw_afu { int fn_actag_enabled; /* Function acTag number enabled */ int afu_actag_base; /* AFU acTag base */ int afu_actag_enabled; /* AFU acTag number enabled */ + + int max_pasid; /* Maximum number of contexts */ };