From patchwork Wed Mar 2 05:35:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Martin K. Petersen" X-Patchwork-Id: 547748 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 6A248C433EF for ; Wed, 2 Mar 2022 05:36:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239615AbiCBFhW (ORCPT ); Wed, 2 Mar 2022 00:37:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38306 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238851AbiCBFhO (ORCPT ); Wed, 2 Mar 2022 00:37:14 -0500 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66B68B16D3 for ; Tue, 1 Mar 2022 21:36:32 -0800 (PST) Received: from pps.filterd (m0246617.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 2222iL0V001861 for ; Wed, 2 Mar 2022 05:36:32 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=corp-2021-07-09; bh=/P5q7khzDGWORmvHzneH31Pu5xI/KSICky+FITQwTec=; b=RlH/WrA5ZhhTY3hPTz2KhblsbYN25rIpC2R3/++3g/RmtxWwI5FjT9/fB742rKzYDn6u STzyVl9o7k4u/OE8P0rhlskDLraa8g0yc8dHjMjwpB0sijm8rWOt4P3EIi8M27wAnH8r DP61tvlnTvKDJBK6kw5sqs1Gu+Pg870NjegfAsjh6J1kKhGHoTEeAtcRGWFLYYl31G5J jNUdIc72c114Dsb3hGqQ3ehj355fYS06Ws3D+Co9OXuZfy6XgvCoXROeb8J+mno3Hx8e WPB4g2I+pJRJ7wSzZU+dwAb9bmDRo055hbUOsxsDnLQMnbL0l2rSV3J5XLh1U9tIRWd9 5Q== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by mx0b-00069f02.pphosted.com with ESMTP id 3eh1k44uec-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 02 Mar 2022 05:36:31 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.1.2/8.16.1.2) with SMTP id 2225IqDM175869 for ; Wed, 2 Mar 2022 05:36:30 GMT Received: from pps.reinject (localhost [127.0.0.1]) by aserp3020.oracle.com with ESMTP id 3efc15vaj8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 02 Mar 2022 05:36:30 +0000 Received: from aserp3020.oracle.com (aserp3020.oracle.com [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 2225aRZh014395 for ; Wed, 2 Mar 2022 05:36:30 GMT Received: from ca-mkp.mkp.ca.oracle.com (ca-mkp.ca.oracle.com [10.156.108.201]) by aserp3020.oracle.com with ESMTP id 3efc15vaeg-8; Wed, 02 Mar 2022 05:36:30 +0000 From: "Martin K. Petersen" To: linux-scsi@vger.kernel.org Cc: "Martin K. Petersen" Subject: [PATCH 07/14] scsi: sd: Switch to using scsi_device VPD pages Date: Wed, 2 Mar 2022 00:35:52 -0500 Message-Id: <20220302053559.32147-8-martin.petersen@oracle.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220302053559.32147-1-martin.petersen@oracle.com> References: <20220302053559.32147-1-martin.petersen@oracle.com> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: p0kXBoXRdWWqJAyNe_kM1ftWTDOmcDVT X-Proofpoint-GUID: p0kXBoXRdWWqJAyNe_kM1ftWTDOmcDVT Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Use the VPD pages already provided by the SCSI midlayer. No need to request them individually in the SCSI disk driver. Signed-off-by: Martin K. Petersen Reviewed-by: Christoph Hellwig Reviewed-by: Bart Van Assche Reviewed-by: Johannes Thumshirn --- drivers/scsi/sd.c | 80 +++++++++++++++++++++++------------------------ 1 file changed, 40 insertions(+), 40 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index d6aec12aef76..84c04691841f 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2872,39 +2872,39 @@ static void sd_read_app_tag_own(struct scsi_disk *sdkp, unsigned char *buffer) static void sd_read_block_limits(struct scsi_disk *sdkp) { unsigned int sector_sz = sdkp->device->sector_size; - const int vpd_len = 64; - unsigned char *buffer = kmalloc(vpd_len, GFP_KERNEL); + struct scsi_vpd *vpd; - if (!buffer || - /* Block Limits VPD */ - scsi_get_vpd_page(sdkp->device, 0xb0, buffer, vpd_len)) + rcu_read_lock(); + + vpd = rcu_dereference(sdkp->device->vpd_pgb0); + if (!vpd || vpd->len < 16) goto out; blk_queue_io_min(sdkp->disk->queue, - get_unaligned_be16(&buffer[6]) * sector_sz); + get_unaligned_be16(&vpd->data[6]) * sector_sz); - sdkp->max_xfer_blocks = get_unaligned_be32(&buffer[8]); - sdkp->opt_xfer_blocks = get_unaligned_be32(&buffer[12]); + sdkp->max_xfer_blocks = get_unaligned_be32(&vpd->data[8]); + sdkp->opt_xfer_blocks = get_unaligned_be32(&vpd->data[12]); - if (buffer[3] == 0x3c) { + if (vpd->len >= 64) { unsigned int lba_count, desc_count; - sdkp->max_ws_blocks = (u32)get_unaligned_be64(&buffer[36]); + sdkp->max_ws_blocks = (u32)get_unaligned_be64(&vpd->data[36]); if (!sdkp->lbpme) goto out; - lba_count = get_unaligned_be32(&buffer[20]); - desc_count = get_unaligned_be32(&buffer[24]); + lba_count = get_unaligned_be32(&vpd->data[20]); + desc_count = get_unaligned_be32(&vpd->data[24]); if (lba_count && desc_count) sdkp->max_unmap_blocks = lba_count; - sdkp->unmap_granularity = get_unaligned_be32(&buffer[28]); + sdkp->unmap_granularity = get_unaligned_be32(&vpd->data[28]); - if (buffer[32] & 0x80) + if (vpd->data[32] & 0x80) sdkp->unmap_alignment = - get_unaligned_be32(&buffer[32]) & ~(1 << 31); + get_unaligned_be32(&vpd->data[32]) & ~(1 << 31); if (!sdkp->lbpvpd) { /* LBP VPD page not provided */ @@ -2926,7 +2926,7 @@ static void sd_read_block_limits(struct scsi_disk *sdkp) } out: - kfree(buffer); + rcu_read_unlock(); } /** @@ -2936,18 +2936,21 @@ static void sd_read_block_limits(struct scsi_disk *sdkp) static void sd_read_block_characteristics(struct scsi_disk *sdkp) { struct request_queue *q = sdkp->disk->queue; - unsigned char *buffer; + struct scsi_vpd *vpd; u16 rot; - const int vpd_len = 64; + u8 zoned; - buffer = kmalloc(vpd_len, GFP_KERNEL); + rcu_read_lock(); + vpd = rcu_dereference(sdkp->device->vpd_pgb1); - if (!buffer || - /* Block Device Characteristics VPD */ - scsi_get_vpd_page(sdkp->device, 0xb1, buffer, vpd_len)) - goto out; + if (!vpd || vpd->len < 8) { + rcu_read_unlock(); + return; + } - rot = get_unaligned_be16(&buffer[4]); + rot = get_unaligned_be16(&vpd->data[4]); + zoned = (vpd->data[8] >> 4) & 3; + rcu_read_unlock(); if (rot == 1) { blk_queue_flag_set(QUEUE_FLAG_NONROT, q); @@ -2958,7 +2961,7 @@ static void sd_read_block_characteristics(struct scsi_disk *sdkp) /* Host-managed */ blk_queue_set_zoned(sdkp->disk, BLK_ZONED_HM); } else { - sdkp->zoned = (buffer[8] >> 4) & 3; + sdkp->zoned = zoned; if (sdkp->zoned == 1) { /* Host-aware */ blk_queue_set_zoned(sdkp->disk, BLK_ZONED_HA); @@ -2969,7 +2972,7 @@ static void sd_read_block_characteristics(struct scsi_disk *sdkp) } if (!sdkp->first_scan) - goto out; + return; if (blk_queue_is_zoned(q)) { sd_printk(KERN_NOTICE, sdkp, "Host-%s zoned block device\n", @@ -2982,9 +2985,6 @@ static void sd_read_block_characteristics(struct scsi_disk *sdkp) sd_printk(KERN_NOTICE, sdkp, "Drive-managed SMR disk\n"); } - - out: - kfree(buffer); } /** @@ -2993,24 +2993,24 @@ static void sd_read_block_characteristics(struct scsi_disk *sdkp) */ static void sd_read_block_provisioning(struct scsi_disk *sdkp) { - unsigned char *buffer; - const int vpd_len = 8; + struct scsi_vpd *vpd; if (sdkp->lbpme == 0) return; - buffer = kmalloc(vpd_len, GFP_KERNEL); + rcu_read_lock(); + vpd = rcu_dereference(sdkp->device->vpd_pgb2); - if (!buffer || scsi_get_vpd_page(sdkp->device, 0xb2, buffer, vpd_len)) - goto out; + if (!vpd || vpd->len < 8) { + rcu_read_unlock(); + return; + } sdkp->lbpvpd = 1; - sdkp->lbpu = (buffer[5] >> 7) & 1; /* UNMAP */ - sdkp->lbpws = (buffer[5] >> 6) & 1; /* WRITE SAME(16) with UNMAP */ - sdkp->lbpws10 = (buffer[5] >> 5) & 1; /* WRITE SAME(10) with UNMAP */ - - out: - kfree(buffer); + sdkp->lbpu = (vpd->data[5] >> 7) & 1; /* UNMAP */ + sdkp->lbpws = (vpd->data[5] >> 6) & 1; /* WRITE SAME(16) w/ UNMAP */ + sdkp->lbpws10 = (vpd->data[5] >> 5) & 1; /* WRITE SAME(10) w/ UNMAP */ + rcu_read_unlock(); } static void sd_read_write_same(struct scsi_disk *sdkp, unsigned char *buffer)