From patchwork Mon Mar 26 16:31:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Uma Krishnan X-Patchwork-Id: 10308203 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 BBAA060212 for ; Mon, 26 Mar 2018 16:31:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ABF1829780 for ; Mon, 26 Mar 2018 16:31:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A052B29785; Mon, 26 Mar 2018 16:31:33 +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 48F1129780 for ; Mon, 26 Mar 2018 16:31:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752266AbeCZQbb (ORCPT ); Mon, 26 Mar 2018 12:31:31 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55766 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752555AbeCZQba (ORCPT ); Mon, 26 Mar 2018 12:31:30 -0400 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w2QGRTjD124376 for ; Mon, 26 Mar 2018 12:31:29 -0400 Received: from e36.co.us.ibm.com (e36.co.us.ibm.com [32.97.110.154]) by mx0a-001b2d01.pphosted.com with ESMTP id 2gy14r2cra-1 (version=TLSv1.2 cipher=AES256-SHA256 bits=256 verify=NOT) for ; Mon, 26 Mar 2018 12:31:29 -0400 Received: from localhost by e36.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 26 Mar 2018 10:31:28 -0600 Received: from b03cxnp08026.gho.boulder.ibm.com (9.17.130.18) by e36.co.us.ibm.com (192.168.1.136) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 26 Mar 2018 10:31:24 -0600 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w2QGVOw112190070; Mon, 26 Mar 2018 09:31:24 -0700 Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 717B76A03B; Mon, 26 Mar 2018 10:31:24 -0600 (MDT) Received: from p8tul1-build.aus.stglabs.ibm.com (unknown [9.3.141.206]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP id D73066A03C; Mon, 26 Mar 2018 10:31:23 -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 07/41] cxlflash: Setup function acTag range Date: Mon, 26 Mar 2018 11:31:21 -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: 18032616-0020-0000-0000-00000DA44BBC 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 16:31:26 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18032616-0021-0000-0000-000060A5D9B2 Message-Id: <1522081881-57709-1-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. 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. 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 85c0f84..7783842 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 */ @@ -59,6 +60,20 @@ static int ocxlflash_config_fn(struct pci_dev *pdev, struct ocxl_hw_afu *afu) 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 356a6a3..55e833cb 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.h +++ b/drivers/scsi/cxlflash/ocxl_hw.h @@ -19,5 +19,8 @@ struct ocxl_hw_afu { 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 */ + bool is_present; /* Function has AFUs defined */ };