From patchwork Mon Mar 26 16:31:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Uma Krishnan X-Patchwork-Id: 10308207 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 D773B600CC for ; Mon, 26 Mar 2018 16:31:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C759229780 for ; Mon, 26 Mar 2018 16:31:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BC29D29785; Mon, 26 Mar 2018 16:31:45 +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 418BA29780 for ; Mon, 26 Mar 2018 16:31:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752138AbeCZQbo (ORCPT ); Mon, 26 Mar 2018 12:31:44 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:42616 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752113AbeCZQbo (ORCPT ); Mon, 26 Mar 2018 12:31:44 -0400 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w2QGOdq3082188 for ; Mon, 26 Mar 2018 12:31:43 -0400 Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) by mx0a-001b2d01.pphosted.com with ESMTP id 2gy3883m4p-1 (version=TLSv1.2 cipher=AES256-SHA256 bits=256 verify=NOT) for ; Mon, 26 Mar 2018 12:31:42 -0400 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 26 Mar 2018 10:31:41 -0600 Received: from b03cxnp07029.gho.boulder.ibm.com (9.17.130.16) by e31.co.us.ibm.com (192.168.1.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 26 Mar 2018 10:31:39 -0600 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp07029.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w2QGVdbV12321086; Mon, 26 Mar 2018 09:31:39 -0700 Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 25D8CBE03A; Mon, 26 Mar 2018 10:31:39 -0600 (MDT) Received: from p8tul1-build.aus.stglabs.ibm.com (unknown [9.3.141.206]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP id A9ECCBE039; Mon, 26 Mar 2018 10:31:38 -0600 (MDT) 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 v3 09/41] cxlflash: Setup AFU acTag range Date: Mon, 26 Mar 2018 11:31:36 -0500 X-Mailer: git-send-email 2.1.0 In-Reply-To: <1522081759-57431-1-git-send-email-ukrishn@linux.vnet.ibm.com> References: <1522081759-57431-1-git-send-email-ukrishn@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18032616-8235-0000-0000-00000D37936E X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008748; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000255; SDB=6.01008739; UDB=6.00513806; IPR=6.00788021; MB=3.00020250; MTD=3.00000008; XFM=3.00000015; UTC=2018-03-26 16:31:40 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18032616-8236-0000-0000-00004037A3F1 Message-Id: <1522081896-57783-1-git-send-email-ukrishn@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-03-26_07:, , 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-1803260169 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 OCXL specification supports distributing acTags amongst different AFUs and functions on the link. As cxlflash devices are expected to only support a single AFU per function, the entire range that was assigned to the function is also assigned to the AFU. Signed-off-by: Uma Krishnan Acked-by: Matthew R. Ochs Reviewed-by: Andrew Donnellan Reviewed-by: Frederic Barrat --- drivers/scsi/cxlflash/ocxl_hw.c | 13 +++++++++++++ drivers/scsi/cxlflash/ocxl_hw.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c index 11399cf..105712b 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.c +++ b/drivers/scsi/cxlflash/ocxl_hw.c @@ -92,6 +92,9 @@ static int ocxlflash_config_afu(struct pci_dev *pdev, struct ocxl_hw_afu *afu) struct ocxl_afu_config *acfg = &afu->acfg; struct ocxl_fn_config *fcfg = &afu->fcfg; struct device *dev = &pdev->dev; + int count; + int base; + int pos; int rc = 0; /* This HW AFU function does not have any AFUs defined */ @@ -105,6 +108,16 @@ static int ocxlflash_config_afu(struct pci_dev *pdev, struct ocxl_hw_afu *afu) __func__, rc); goto out; } + + /* Only one AFU per function is supported, so actag_base is same */ + base = afu->fn_actag_base; + count = min_t(int, acfg->actag_supported, afu->fn_actag_enabled); + pos = acfg->dvsec_afu_control_pos; + + ocxl_config_set_afu_actag(pdev, pos, base, count); + dev_dbg(dev, "%s: acTag base=%d enabled=%d\n", __func__, base, count); + afu->afu_actag_base = base; + afu->afu_actag_enabled = count; out: return rc; } diff --git a/drivers/scsi/cxlflash/ocxl_hw.h b/drivers/scsi/cxlflash/ocxl_hw.h index c9b2843..21803b5 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.h +++ b/drivers/scsi/cxlflash/ocxl_hw.h @@ -22,6 +22,8 @@ struct ocxl_hw_afu { int fn_actag_base; /* Function acTag base */ int fn_actag_enabled; /* Function acTag number enabled */ + int afu_actag_base; /* AFU acTag base */ + int afu_actag_enabled; /* AFU acTag number enabled */ bool is_present; /* Function has AFUs defined */ };