From patchwork Fri Oct 9 17:14:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sreekanth Reddy X-Patchwork-Id: 287219 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, MIME_HEADER_CTYPE_ONLY, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, T_TVD_MIME_NO_HEADERS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F2A8C433DF for ; Fri, 9 Oct 2020 17:14:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0834A22265 for ; Fri, 9 Oct 2020 17:14:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="ATbOucE0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733153AbgJIROk (ORCPT ); Fri, 9 Oct 2020 13:14:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50968 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390171AbgJIROf (ORCPT ); Fri, 9 Oct 2020 13:14:35 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C1CCC0613D6 for ; Fri, 9 Oct 2020 10:14:35 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id g9so7687187pgh.8 for ; Fri, 09 Oct 2020 10:14:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=jt/p8SlIs/Nb+14jJEQA/7DXohawcX7ddeXM+eZ9Kts=; b=ATbOucE0kf5gPKeH0HkEHnA8vi8Rav8NbHUchTQGivx3T8kPa1C5Jofr06qE0LFd34 zS4MN65up9P9gqnlMRG67Z2djY6nWipdi032bzCWnfUponE1sr7yu6VxUq7jhddEPDnW ipTKr/fRcbq3s9kRcmqjH3isVQJpNs7EFYPIk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=jt/p8SlIs/Nb+14jJEQA/7DXohawcX7ddeXM+eZ9Kts=; b=R6VNXniqgVCndWdv95qNzejuIRPBjB4m1LyOh4XO0y8EyXEzpQ1cdWMHvULLjWf7xu eweuT3bEtKt5Hs5eHKS1sA1kqZc+0mvU+HxgCwQYuZjIyLmUUJNFsez7XXZ4jAXxChJb sGbuR+0wUt2lV7F4+HPS+HZwvv3AOg6twEGDjYLKNsCDUqRYppJf2nP5F47uFK0bXg1Z 4+6escHxaD0aIto3Kg85duU4P5xmDh4dTX7eqltNiNZ876Xwm3FmrmJVsiNq1A9j9Q9X 7U0MTwcT6seUfMa5h3J8TLuMCafPPtWmbu4446fZBd107/yz3Aa7zISAIAPTwl/l00nK SpQw== X-Gm-Message-State: AOAM531Ykn+LLjfnGFoAz9KjyAyJ7kW4s2MwxE6YA0AAhod8x1JF/oap FDCt1nE8AyX1Tc4NVkhhV2GTMgIncg5yTrUJZig= X-Google-Smtp-Source: ABdhPJzblMDQ6No0St5QifibfrtPM+g7dCLhNnOWMaqueDq+E+itdM1F6oKtt2H9ACJXajn7eaTwBA== X-Received: by 2002:a17:90a:bd0e:: with SMTP id y14mr5812911pjr.58.1602263675038; Fri, 09 Oct 2020 10:14:35 -0700 (PDT) Received: from dhcp-10-123-20-36.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id fy24sm12299055pjb.35.2020.10.09.10.14.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Oct 2020 10:14:33 -0700 (PDT) From: Sreekanth Reddy To: martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, sathya.prakash@broadcom.com, suganath-prabu.subramani@broadcom.com, Sreekanth Reddy Subject: [PATCH 07/14] mpt3sas: Get sas_device objects using device's rphy Date: Fri, 9 Oct 2020 22:44:33 +0530 Message-Id: <20201009171440.4949-8-sreekanth.reddy@broadcom.com> X-Mailer: git-send-email 2.18.4 In-Reply-To: <20201009171440.4949-1-sreekanth.reddy@broadcom.com> References: <20201009171440.4949-1-sreekanth.reddy@broadcom.com> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org In below scsi_host_template & sas_function_template callback functions, the driver won't have PhysicalPort number information to retrieve the sas_device object using SAS Address & PhysicalPort number. So, in these callback functions the device's rphy object is used to retrieve sas_device object for the device. .target_alloc, .get_enclosure_identifier .get_bay_identifier When a rphy (of type sas_rphy) object is allocated then it's address is saved in corresponding sas_device object's rphy field. so in __mpt3sas_get_sdev_by_rphy(), driver loops over all the sas_device objects from sas_device_list list to retrieve the sas_device objects who's rphy matches with provided rphy. Signed-off-by: Sreekanth Reddy --- drivers/scsi/mpt3sas/mpt3sas_base.h | 5 +++ drivers/scsi/mpt3sas/mpt3sas_scsih.c | 41 ++++++++++++++++++++++-- drivers/scsi/mpt3sas/mpt3sas_transport.c | 7 ++-- 3 files changed, 47 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index 24db627..047d234 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -537,6 +537,8 @@ struct _internal_cmd { * @chassis_slot: chassis slot * @is_chassis_slot_valid: chassis slot valid or not * @port: hba port entry containing device's port number info + * @rphy: device's sas_rphy address used to identify this device structure in + * target_alloc callback function */ struct _sas_device { struct list_head list; @@ -564,6 +566,7 @@ struct _sas_device { u8 connector_name[5]; struct kref refcount; struct hba_port *port; + struct sas_rphy *rphy; }; static inline void sas_device_get(struct _sas_device *s) @@ -1681,6 +1684,8 @@ void mpt3sas_port_enable_complete(struct MPT3SAS_ADAPTER *ioc); struct _raid_device * mpt3sas_raid_device_find_by_handle(struct MPT3SAS_ADAPTER *ioc, u16 handle); void mpt3sas_scsih_change_queue_depth(struct scsi_device *sdev, int qdepth); +struct _sas_device * +__mpt3sas_get_sdev_by_rphy(struct MPT3SAS_ADAPTER *ioc, struct sas_rphy *rphy); /* config shared API */ u8 mpt3sas_config_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 4542d66..afb381d 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -638,6 +638,44 @@ mpt3sas_get_pdev_from_target(struct MPT3SAS_ADAPTER *ioc, return ret; } + +/** + * __mpt3sas_get_sdev_by_rphy - sas device search + * @ioc: per adapter object + * @rphy: sas_rphy pointer + * + * Context: This function will acquire ioc->sas_device_lock and will release + * before returning the sas_device object. + * + * This searches for sas_device from rphy object + * then return sas_device object. + */ +struct _sas_device * +__mpt3sas_get_sdev_by_rphy(struct MPT3SAS_ADAPTER *ioc, + struct sas_rphy *rphy) +{ + struct _sas_device *sas_device; + + assert_spin_locked(&ioc->sas_device_lock); + + list_for_each_entry(sas_device, &ioc->sas_device_list, list) { + if (sas_device->rphy != rphy) + continue; + sas_device_get(sas_device); + return sas_device; + } + + sas_device = NULL; + list_for_each_entry(sas_device, &ioc->sas_device_init_list, list) { + if (sas_device->rphy != rphy) + continue; + sas_device_get(sas_device); + return sas_device; + } + + return NULL; +} + /** * mpt3sas_get_sdev_by_addr - get _sas_device object corresponding to provided * sas address from sas_device_list list @@ -1815,8 +1853,7 @@ scsih_target_alloc(struct scsi_target *starget) /* sas/sata devices */ spin_lock_irqsave(&ioc->sas_device_lock, flags); rphy = dev_to_rphy(starget->dev.parent); - sas_device = __mpt3sas_get_sdev_by_addr(ioc, - rphy->identify.sas_address, NULL); + sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy); if (sas_device) { sas_target_priv_data->handle = sas_device->handle; diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c index 560ce32..3cc78c2 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_transport.c +++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c @@ -733,6 +733,7 @@ mpt3sas_transport_port_add(struct MPT3SAS_ADAPTER *ioc, u16 handle, mpt3sas_port->port = port; if (mpt3sas_port->remote_identify.device_type == SAS_END_DEVICE) { rphy = sas_end_device_alloc(port); + sas_device->rphy = rphy; if (sas_node->handle <= ioc->sas_hba.num_phys) hba_port->sas_address = sas_device->sas_address; } else { @@ -1342,8 +1343,7 @@ _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier) int rc; spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = __mpt3sas_get_sdev_by_addr(ioc, - rphy->identify.sas_address, 0); + sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy); if (sas_device) { *identifier = sas_device->enclosure_logical_id; rc = 0; @@ -1372,8 +1372,7 @@ _transport_get_bay_identifier(struct sas_rphy *rphy) int rc; spin_lock_irqsave(&ioc->sas_device_lock, flags); - sas_device = __mpt3sas_get_sdev_by_addr(ioc, - rphy->identify.sas_address, 0); + sas_device = __mpt3sas_get_sdev_by_rphy(ioc, rphy); if (sas_device) { rc = sas_device->slot; sas_device_put(sas_device);