From patchwork Thu Jun 8 19:26:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Joyce X-Patchwork-Id: 13272794 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EABCCC7EE2E for ; Thu, 8 Jun 2023 19:27:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233287AbjFHT1K (ORCPT ); Thu, 8 Jun 2023 15:27:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229837AbjFHT1H (ORCPT ); Thu, 8 Jun 2023 15:27:07 -0400 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A0DE518C; Thu, 8 Jun 2023 12:27:06 -0700 (PDT) Received: from pps.filterd (m0356517.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 358JC72q028226; Thu, 8 Jun 2023 19:26:46 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=Vdtjy7KMBO+X9Z7rUqm5H88eVKYCvsbAqEigHgRUlN8=; b=gDCHlcWHLywVSNpQqHtoWrDy+1u3KflybmHGkzL1pZVQtflFrOO+8nNAJMv5xy3BuKDV H7H6pUTVxsXx0XwRzIDrKLyk5kgMW/+NODFQwb/ALs2bGxY+OQuiEFm6DqwMLTUPuLvf Ljy5BtOnwVbNJrvqwI9iWtvrPRTB//3LfCsMY3tAOkvVY5cHxNqseEm3EFzMkVLzBEn2 mZkRl+nDwtcewoPxLtVy6d3x/FQuFge2U5mhim+10xmM9a5PdiS/RlTx+7TuBrU02QTe qwKP44g6Xae0V4VKbk0y26+6VuisW4YoGNHVoo0PVURkSVJW4Edg1tELYZryLhNINORM 0g== Received: from ppma03wdc.us.ibm.com (ba.79.3fa9.ip4.static.sl-reverse.com [169.63.121.186]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3r3mxdgc4j-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 08 Jun 2023 19:26:46 +0000 Received: from pps.filterd (ppma03wdc.us.ibm.com [127.0.0.1]) by ppma03wdc.us.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 358GqV3E022662; Thu, 8 Jun 2023 19:26:44 GMT Received: from smtprelay04.wdc07v.mail.ibm.com ([9.208.129.114]) by ppma03wdc.us.ibm.com (PPS) with ESMTPS id 3r2a77j7j1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 08 Jun 2023 19:26:44 +0000 Received: from smtpav06.dal12v.mail.ibm.com (smtpav06.dal12v.mail.ibm.com [10.241.53.105]) by smtprelay04.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 358JQhti32899620 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 8 Jun 2023 19:26:43 GMT Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7902558063; Thu, 8 Jun 2023 19:26:43 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4CA1C5805F; Thu, 8 Jun 2023 19:26:43 +0000 (GMT) Received: from rhel-laptop.ibm.com (unknown [9.61.61.30]) by smtpav06.dal12v.mail.ibm.com (Postfix) with ESMTP; Thu, 8 Jun 2023 19:26:43 +0000 (GMT) From: gjoyce@linux.vnet.ibm.com To: linux-block@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org, jonathan.derrick@linux.dev, brking@linux.vnet.ibm.com, msuchanek@suse.de, mpe@ellerman.id.au, nayna@linux.ibm.com, axboe@kernel.dk, akpm@linux-foundation.org, gjoyce@linux.vnet.ibm.com, keyrings@vger.kernel.org Subject: [PATCH v5 1/3] block: sed-opal: Implement IOC_OPAL_DISCOVERY Date: Thu, 8 Jun 2023 14:26:40 -0500 Message-Id: <20230608192642.516566-2-gjoyce@linux.vnet.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230608192642.516566-1-gjoyce@linux.vnet.ibm.com> References: <20230608192642.516566-1-gjoyce@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: oaAHid84aGBfnAM5OJrfF1jdyPQSMT3R X-Proofpoint-ORIG-GUID: oaAHid84aGBfnAM5OJrfF1jdyPQSMT3R X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-08_14,2023-06-08_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 mlxlogscore=999 suspectscore=0 malwarescore=0 adultscore=0 impostorscore=0 clxscore=1015 bulkscore=0 spamscore=0 mlxscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306080165 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Greg Joyce Add IOC_OPAL_DISCOVERY ioctl to return raw discovery data to a SED Opal application. This allows the application to display drive capabilities and state. Signed-off-by: Greg Joyce Reviewed-by: Christoph Hellwig Reviewed-by: Jonathan Derrick --- block/sed-opal.c | 38 ++++++++++++++++++++++++++++++++--- include/linux/sed-opal.h | 1 + include/uapi/linux/sed-opal.h | 6 ++++++ 3 files changed, 42 insertions(+), 3 deletions(-) diff --git a/block/sed-opal.c b/block/sed-opal.c index c18339446ef3..67c6c4f2b4b0 100644 --- a/block/sed-opal.c +++ b/block/sed-opal.c @@ -463,8 +463,11 @@ static int execute_steps(struct opal_dev *dev, return error; } -static int opal_discovery0_end(struct opal_dev *dev) +static int opal_discovery0_end(struct opal_dev *dev, void *data) { + struct opal_discovery *discv_out = data; /* may be NULL */ + u8 __user *buf_out; + u64 len_out; bool found_com_id = false, supported = true, single_user = false; const struct d0_header *hdr = (struct d0_header *)dev->resp; const u8 *epos = dev->resp, *cpos = dev->resp; @@ -480,6 +483,15 @@ static int opal_discovery0_end(struct opal_dev *dev) return -EFAULT; } + if (discv_out) { + buf_out = (u8 __user *)(uintptr_t)discv_out->data; + len_out = min_t(u64, discv_out->size, hlen); + if (buf_out && copy_to_user(buf_out, dev->resp, len_out)) + return -EFAULT; + + discv_out->size = hlen; /* actual size of data */ + } + epos += hlen; /* end of buffer */ cpos += sizeof(*hdr); /* current position on buffer */ @@ -565,13 +577,13 @@ static int opal_discovery0(struct opal_dev *dev, void *data) if (ret) return ret; - return opal_discovery0_end(dev); + return opal_discovery0_end(dev, data); } static int opal_discovery0_step(struct opal_dev *dev) { const struct opal_step discovery0_step = { - opal_discovery0, + opal_discovery0, NULL }; return execute_step(dev, &discovery0_step, 0); @@ -2435,6 +2447,22 @@ static int opal_secure_erase_locking_range(struct opal_dev *dev, return ret; } +static int opal_get_discv(struct opal_dev *dev, struct opal_discovery *discv) +{ + const struct opal_step discovery0_step = { + opal_discovery0, discv + }; + int ret = 0; + + mutex_lock(&dev->dev_lock); + setup_opal_dev(dev); + ret = execute_step(dev, &discovery0_step, 0); + mutex_unlock(&dev->dev_lock); + if (ret) + return ret; + return discv->size; /* modified to actual length of data */ +} + static int opal_erase_locking_range(struct opal_dev *dev, struct opal_session_info *opal_session) { @@ -3056,6 +3084,10 @@ int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg) case IOC_OPAL_GET_GEOMETRY: ret = opal_get_geometry(dev, arg); break; + case IOC_OPAL_DISCOVERY: + ret = opal_get_discv(dev, p); + break; + default: break; } diff --git a/include/linux/sed-opal.h b/include/linux/sed-opal.h index bbae1e52ab4f..ef65f589fbeb 100644 --- a/include/linux/sed-opal.h +++ b/include/linux/sed-opal.h @@ -47,6 +47,7 @@ static inline bool is_sed_ioctl(unsigned int cmd) case IOC_OPAL_GET_STATUS: case IOC_OPAL_GET_LR_STATUS: case IOC_OPAL_GET_GEOMETRY: + case IOC_OPAL_DISCOVERY: return true; } return false; diff --git a/include/uapi/linux/sed-opal.h b/include/uapi/linux/sed-opal.h index dc2efd345133..7f5732c5bdc5 100644 --- a/include/uapi/linux/sed-opal.h +++ b/include/uapi/linux/sed-opal.h @@ -173,6 +173,11 @@ struct opal_geometry { __u8 __align[3]; }; +struct opal_discovery { + __u64 data; + __u64 size; +}; + #define IOC_OPAL_SAVE _IOW('p', 220, struct opal_lock_unlock) #define IOC_OPAL_LOCK_UNLOCK _IOW('p', 221, struct opal_lock_unlock) #define IOC_OPAL_TAKE_OWNERSHIP _IOW('p', 222, struct opal_key) @@ -192,5 +197,6 @@ struct opal_geometry { #define IOC_OPAL_GET_STATUS _IOR('p', 236, struct opal_status) #define IOC_OPAL_GET_LR_STATUS _IOW('p', 237, struct opal_lr_status) #define IOC_OPAL_GET_GEOMETRY _IOR('p', 238, struct opal_geometry) +#define IOC_OPAL_DISCOVERY _IOW('p', 239, struct opal_discovery) #endif /* _UAPI_SED_OPAL_H */