From patchwork Thu Oct 20 14:16:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yihang Li X-Patchwork-Id: 617079 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 6E592C4332F for ; Thu, 20 Oct 2022 14:17:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230155AbiJTORf (ORCPT ); Thu, 20 Oct 2022 10:17:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229897AbiJTORb (ORCPT ); Thu, 20 Oct 2022 10:17:31 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5DC1D5BC84 for ; Thu, 20 Oct 2022 07:17:30 -0700 (PDT) Received: from kwepemi500008.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4MtV6S2gn9zHtdG for ; Thu, 20 Oct 2022 22:17:20 +0800 (CST) Received: from localhost.localdomain (10.67.165.2) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Thu, 20 Oct 2022 22:17:27 +0800 From: Yihang Li To: , CC: , , , , Subject: [PATCH 1/2] scsi: libsas: Add sas_update_linkrate() Date: Thu, 20 Oct 2022 22:16:34 +0800 Message-ID: <20221020141635.2479412-2-liyihang9@huawei.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20221020141635.2479412-1-liyihang9@huawei.com> References: <20221020141635.2479412-1-liyihang9@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.2] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemi500008.china.huawei.com (7.221.188.139) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add support for updates the link rate of all expander devices and expander SATA PHYs connected to the port and triggers revalidation. Signed-off-by: Yihang Li --- drivers/scsi/libsas/sas_expander.c | 40 ++++++++++++++++++++++++++++++ drivers/scsi/libsas/sas_internal.h | 1 + 2 files changed, 41 insertions(+) diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index a18259f68c40..0cfb98c791c9 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -2029,6 +2029,46 @@ static bool dev_type_flutter(enum sas_device_type new, enum sas_device_type old) return false; } +void sas_update_linkrate(struct asd_sas_port *port) +{ + struct domain_device *parent, *dev, *n; + struct sas_phy *local_phy; + struct ex_phy *ex_phy; + int phy_id; + + list_for_each_entry_safe(dev, n, &port->dev_list, dev_list_node) { + if (dev_is_expander(dev->dev_type)) { + dev->linkrate = port->linkrate; + dev->min_linkrate = port->linkrate; + dev->max_linkrate = port->linkrate; + dev->ex_dev.ex_change_count = -1; + } + + local_phy = sas_get_local_phy(dev); + if (scsi_is_sas_phy_local(local_phy)) { + sas_put_local_phy(local_phy); + continue; + } + + parent = dev->parent; + phy_id = local_phy->number; + ex_phy = &parent->ex_dev.ex_phy[phy_id]; + if (dev_is_sata(dev)) { + if (dev->linkrate > parent->min_linkrate) { + struct sas_phy_linkrates rates = { + .maximum_linkrate = parent->min_linkrate, + .minimum_linkrate = parent->min_linkrate, + }; + + sas_smp_phy_control(parent, phy_id, + PHY_FUNC_LINK_RESET, &rates); + ex_phy->phy_change_count = -1; + } + } + sas_put_local_phy(local_phy); + } +} + void async_sas_ex_phy_refresh_linkrate(void *data, async_cookie_t cookie) { struct domain_device *dev = data; diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h index 591b217b0813..fc976043a523 100644 --- a/drivers/scsi/libsas/sas_internal.h +++ b/drivers/scsi/libsas/sas_internal.h @@ -36,6 +36,7 @@ int sas_show_oob_mode(enum sas_oob_mode oob_mode, char *buf); int sas_register_phys(struct sas_ha_struct *sas_ha); void sas_unregister_phys(struct sas_ha_struct *sas_ha); +void sas_update_linkrate(struct asd_sas_port *port); void async_sas_ex_phy_refresh_linkrate(void *data, async_cookie_t cookie); struct asd_sas_event *sas_alloc_event(struct asd_sas_phy *phy, gfp_t gfp_flags);