From patchwork Sat Sep 24 07:34:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Yan X-Patchwork-Id: 12987431 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 E33F0C6FA83 for ; Sat, 24 Sep 2022 07:24:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233249AbiIXHYV (ORCPT ); Sat, 24 Sep 2022 03:24:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232759AbiIXHYT (ORCPT ); Sat, 24 Sep 2022 03:24:19 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3253013D867; Sat, 24 Sep 2022 00:24:18 -0700 (PDT) Received: from canpemm500004.china.huawei.com (unknown [172.30.72.56]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4MZL514Ts0z1P6mK; Sat, 24 Sep 2022 15:20:05 +0800 (CST) Received: from huawei.com (10.175.127.227) by canpemm500004.china.huawei.com (7.192.104.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Sat, 24 Sep 2022 15:24:15 +0800 From: Jason Yan To: , CC: , , , , , , , Jason Yan Subject: [PATCH v2 1/8] scsi: libsas: introduce sas_find_attached_phy() helper Date: Sat, 24 Sep 2022 15:34:48 +0800 Message-ID: <20220924073455.2186805-2-yanaijie@huawei.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220924073455.2186805-1-yanaijie@huawei.com> References: <20220924073455.2186805-1-yanaijie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To canpemm500004.china.huawei.com (7.192.104.92) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org LLDDs are implementing their own attached phy finding code repeatedly. Factor it out to libsas. Signed-off-by: Jason Yan --- drivers/scsi/libsas/sas_expander.c | 17 +++++++++++++++++ include/scsi/libsas.h | 2 ++ 2 files changed, 19 insertions(+) diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index fa2209080cc2..a5effff3d1c3 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -2107,6 +2107,23 @@ int sas_ex_revalidate_domain(struct domain_device *port_dev) return res; } +int sas_find_attached_phy(struct expander_device *ex_dev, + struct domain_device *dev) +{ + struct ex_phy *phy; + int phy_id; + + for (phy_id = 0; phy_id < ex_dev->num_phys; phy_id++) { + phy = &ex_dev->ex_phy[phy_id]; + if (SAS_ADDR(phy->attached_sas_addr) + == SAS_ADDR(dev->sas_addr)) + return phy_id; + } + + return -ENODEV; +} +EXPORT_SYMBOL_GPL(sas_find_attached_phy); + void sas_smp_handler(struct bsg_job *job, struct Scsi_Host *shost, struct sas_rphy *rphy) { diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index 2dbead74a2af..75faf2308eae 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -750,6 +750,8 @@ int sas_clear_task_set(struct domain_device *dev, u8 *lun); int sas_lu_reset(struct domain_device *dev, u8 *lun); int sas_query_task(struct sas_task *task, u16 tag); int sas_abort_task(struct sas_task *task, u16 tag); +int sas_find_attached_phy(struct expander_device *ex_dev, + struct domain_device *dev); void sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event, gfp_t gfp_flags);