From patchwork Mon Feb 26 22:20:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Uma Krishnan X-Patchwork-Id: 10243789 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 15067602A0 for ; Mon, 26 Feb 2018 22:21:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EE2352A42E for ; Mon, 26 Feb 2018 22:21:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E2B592A43B; Mon, 26 Feb 2018 22:21:01 +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 7EE682A42E for ; Mon, 26 Feb 2018 22:21:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751518AbeBZWVB (ORCPT ); Mon, 26 Feb 2018 17:21:01 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:49108 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751165AbeBZWVA (ORCPT ); Mon, 26 Feb 2018 17:21:00 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w1QMJAOL127905 for ; Mon, 26 Feb 2018 17:21:00 -0500 Received: from e11.ny.us.ibm.com (e11.ny.us.ibm.com [129.33.205.201]) by mx0b-001b2d01.pphosted.com with ESMTP id 2gcp9stwmn-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 26 Feb 2018 17:20:59 -0500 Received: from localhost by e11.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 26 Feb 2018 17:20:59 -0500 Received: from b01cxnp23032.gho.pok.ibm.com (9.57.198.27) by e11.ny.us.ibm.com (146.89.104.198) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 26 Feb 2018 17:20:56 -0500 Received: from b01ledav004.gho.pok.ibm.com (b01ledav004.gho.pok.ibm.com [9.57.199.109]) by b01cxnp23032.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w1QMKtJ442860612; Mon, 26 Feb 2018 22:20:55 GMT Received: from b01ledav004.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 847FA112057; Mon, 26 Feb 2018 17:19:10 -0500 (EST) Received: from p8tul1-build.aus.stglabs.ibm.com (unknown [9.3.141.206]) by b01ledav004.gho.pok.ibm.com (Postfix) with ESMTP id C2554112051; Mon, 26 Feb 2018 17:19:09 -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 v2 07/38] cxlflash: Setup function acTag range Date: Mon, 26 Feb 2018 16:20:51 -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: 18022622-2213-0000-0000-000002764805 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 22:20:57 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18022622-2214-0000-0000-0000593F468B Message-Id: <1519683651-17003-1-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 The OCXL specification supports distributing acTags amongst different AFUs and functions on the link. The platform-specific acTag range for the link is obtained using the OCXL provider services and then assigned to the host function based on implementation. For cxlflash devices only a single function per host is expected and thus the entire range is assigned. Signed-off-by: Uma Krishnan Acked-by: Matthew R. Ochs Reviewed-by: Andrew Donnellan Reviewed-by: Frederic Barrat --- drivers/scsi/cxlflash/ocxl_hw.c | 15 +++++++++++++++ drivers/scsi/cxlflash/ocxl_hw.h | 3 +++ 2 files changed, 18 insertions(+) diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c index dc32a73..39cccb7 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.c +++ b/drivers/scsi/cxlflash/ocxl_hw.c @@ -42,6 +42,7 @@ static int ocxlflash_config_fn(struct pci_dev *pdev, struct ocxl_hw_afu *afu) { struct ocxl_fn_config *fcfg = &afu->fcfg; struct device *dev = &pdev->dev; + u16 base, enabled, supported; int rc = 0; /* Read DVSEC config of the function */ @@ -56,6 +57,20 @@ static int ocxlflash_config_fn(struct pci_dev *pdev, struct ocxl_hw_afu *afu) if (fcfg->max_afu_index != 0) dev_warn(dev, "%s: Unexpected AFU index value %d\n", __func__, fcfg->max_afu_index); + + rc = ocxl_config_get_actag_info(pdev, &base, &enabled, &supported); + if (unlikely(rc)) { + dev_err(dev, "%s: ocxl_config_get_actag_info failed rc=%d\n", + __func__, rc); + goto out; + } + + afu->fn_actag_base = base; + afu->fn_actag_enabled = enabled; + + ocxl_config_set_actag(pdev, fcfg->dvsec_function_pos, base, enabled); + dev_dbg(dev, "%s: Function acTag range base=%u enabled=%u\n", + __func__, base, enabled); out: return rc; } diff --git a/drivers/scsi/cxlflash/ocxl_hw.h b/drivers/scsi/cxlflash/ocxl_hw.h index 658f420..190d71a 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.h +++ b/drivers/scsi/cxlflash/ocxl_hw.h @@ -18,4 +18,7 @@ struct ocxl_hw_afu { struct device *dev; /* Generic device */ struct ocxl_fn_config fcfg; /* DVSEC config of the function */ + + int fn_actag_base; /* Function acTag base */ + int fn_actag_enabled; /* Function acTag number enabled */ };