From patchwork Tue Dec 8 19:37:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Don Brace X-Patchwork-Id: 11959599 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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 8826EC2BBCA for ; Tue, 8 Dec 2020 20:27:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 62F5A23A79 for ; Tue, 8 Dec 2020 20:27:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727113AbgLHU1W (ORCPT ); Tue, 8 Dec 2020 15:27:22 -0500 Received: from esa3.microchip.iphmx.com ([68.232.153.233]:25999 "EHLO esa3.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727550AbgLHU1U (ORCPT ); Tue, 8 Dec 2020 15:27:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1607459240; x=1638995240; h=subject:from:to:cc:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LQPOsl+9tusgsSeYXkLlhghah41+USbN/Bmscc/cZOw=; b=qrLIsAM02OvxU9pUCQIsqjuGCe9783h3H0jaybdWpYq5W5AqWPSHFUna MGvzvhlIl0pntl25ahZTMgtDInR9yUvQQkkVAYGqEuD+8HGg/QhsfjhTS 28hC9MxXek1QV2U1E+R4gJMUWQLojfnpiqg604MWLVAx8eDhwHbhQM+ZQ r70uMg/Byo+NhwewswWfpG4K0CdCiy2fpsX7tTl0mIu3Y0ywt6wztQfIv xjQ1ssG3YvNToQ+po9M0wTsWXwMqKv3LOHksCtD2sXgb3TZSyaTmx7vla VgcD9ZIAdqaYrsFX02y6WoA6nCSB8Xdu9DlV2yW7aRS7875D/b7YZP1NX A==; IronPort-SDR: xJRDMQHZ/Rr7ukl46nhtw8v+XFiwmIv8c66HPpnpxen2IulKWYCyscJ0di9Y/miJJORSXVFFJx /uOhvXaUmE+P807W0JzIbynxtzKmsRt+9qCiQUU1kYk4rphj5BOg05N7hQv4GjJ6MT+/Uz8BnH uX+zJ2o0uyyfDRxRCfvTrica4bD4u5hnXBFfCx18uaS5WikavfIS0i6ow0OM6NvhQf6MVQpHgZ UEXmwtnpLgnFxRi6p+ZXDaVcTYJTsITAO5yH5sGXBj/NGEGHIcFsnBjapc5xD96LHKR8JFqX3G nSI= X-IronPort-AV: E=Sophos;i="5.78,403,1599548400"; d="scan'208";a="102012113" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa3.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 08 Dec 2020 12:37:39 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Tue, 8 Dec 2020 12:37:39 -0700 Received: from [127.0.1.1] (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Tue, 8 Dec 2020 12:37:39 -0700 Subject: [PATCH V2 11/25] smartpqi: add host level stream detection enable From: Don Brace To: , , , , , , , , , CC: Date: Tue, 8 Dec 2020 13:37:39 -0600 Message-ID: <160745625914.13450.3429791820478001325.stgit@brunhilda> In-Reply-To: <160745609917.13450.11882890596851148601.stgit@brunhilda> References: <160745609917.13450.11882890596851148601.stgit@brunhilda> User-Agent: StGit/0.23-dirty MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org * Allow R5/R6 stream detection to be disabled/enabled. using sysfs entry enable_stream_detection. Example usage: lsscsi [2:2:0:0] storage Adaptec 3258P-32i /e 0010 ^ | +---- NOTE: here host is host2 find /sys -name \*enable_stream\* /sys/devices/pci0000:36/0000:36:00.0/0000:37:00.0/0000:38:00.0/0000:39:00.0/host2/scsi_host/host2/enable_stream_detection /sys/devices/pci0000:5b/0000:5b:00.0/0000:5c:00.0/host3/scsi_host/host3/enable_stream_detection Current stream detection: cat /sys/devices/pci0000:36/0000:36:00.0/0000:37:00.0/0000:38:00.0/0000:39:00.0/host2/scsi_host/host2/enable_stream_detection 1 Turn off stream detection: echo 0 > /sys/devices/pci0000:36/0000:36:00.0/0000:37:00.0/0000:38:00.0/0000:39:00.0/host2/scsi_host/host2/enable_stream_detection Turn on stream detection: echo 1 > /sys/devices/pci0000:36/0000:36:00.0/0000:37:00.0/0000:38:00.0/0000:39:00.0/host2/scsi_host/host2/enable_stream_detection Reviewed-by: Scott Benesh Reviewed-by: Scott Teel Reviewed-by: Kevin Barnett Signed-off-by: Don Brace --- drivers/scsi/smartpqi/smartpqi_init.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 0d1b3ce7989f..c5ee93a60695 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -6718,6 +6718,34 @@ static ssize_t pqi_lockup_action_store(struct device *dev, return -EINVAL; } +static ssize_t pqi_host_enable_stream_detection_show(struct device *dev, + struct device_attribute *attr, char *buffer) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost); + + return scnprintf(buffer, 10, "%hhx\n", + ctrl_info->enable_stream_detection); +} + +static ssize_t pqi_host_enable_stream_detection_store(struct device *dev, + struct device_attribute *attr, const char *buffer, size_t count) +{ + struct Scsi_Host *shost = class_to_shost(dev); + struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost); + u8 set_stream_detection = 0; + + if (kstrtou8(buffer, 0, &set_stream_detection)) + return -EINVAL; + + if (set_stream_detection > 0) + set_stream_detection = 1; + + ctrl_info->enable_stream_detection = set_stream_detection; + + return count; +} + static ssize_t pqi_host_enable_r5_writes_show(struct device *dev, struct device_attribute *attr, char *buffer) { @@ -6780,6 +6808,9 @@ static DEVICE_ATTR(vendor, 0444, pqi_vendor_show, NULL); static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store); static DEVICE_ATTR(lockup_action, 0644, pqi_lockup_action_show, pqi_lockup_action_store); +static DEVICE_ATTR(enable_stream_detection, 0644, + pqi_host_enable_stream_detection_show, + pqi_host_enable_stream_detection_store); static DEVICE_ATTR(enable_r5_writes, 0644, pqi_host_enable_r5_writes_show, pqi_host_enable_r5_writes_store); static DEVICE_ATTR(enable_r6_writes, 0644, @@ -6793,6 +6824,7 @@ static struct device_attribute *pqi_shost_attrs[] = { &dev_attr_vendor, &dev_attr_rescan, &dev_attr_lockup_action, + &dev_attr_enable_stream_detection, &dev_attr_enable_r5_writes, &dev_attr_enable_r6_writes, NULL