From patchwork Fri Sep 18 20:36:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Klaus Jensen X-Patchwork-Id: 273311 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=-12.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 3242FC43465 for ; Fri, 18 Sep 2020 20:51:34 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8AA612311A for ; Fri, 18 Sep 2020 20:51:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8AA612311A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=irrelevant.dk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:54286 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kJNLw-0003YS-CO for qemu-devel@archiver.kernel.org; Fri, 18 Sep 2020 16:51:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46378) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kJN7V-0004nj-Ok; Fri, 18 Sep 2020 16:36:37 -0400 Received: from new1-smtp.messagingengine.com ([66.111.4.221]:38209) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kJN7S-0004xc-SR; Fri, 18 Sep 2020 16:36:37 -0400 Received: from compute7.internal (compute7.nyi.internal [10.202.2.47]) by mailnew.nyi.internal (Postfix) with ESMTP id 1B659580215; Fri, 18 Sep 2020 16:36:34 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute7.internal (MEProxy); Fri, 18 Sep 2020 16:36:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=irrelevant.dk; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm1; bh=OilfjDLIZZFgT 1MKes1rgGsHvhKPCbnciYBLgxXw6SY=; b=kGKFFFUBJaNqOXeuKcNK9n3fvOGoj +aDcAkarUYLo4bA2OPU8iCU+zw93KdUq8PxKGIL5isNx2ID5n2YhDwwvo+xwatUL pK10bvQSdF30gCgOIfFUgXwJQWzM+mOnvstVvFypOO2a1T15bcPNrXxHv5Sz0zQp jC0M3W15lyjyCY1y0FJ18fXUYHeoqz2o4n1tUVtiMGzZYQxc8xn5waJTLOfxSOlH IzS34CbFmOWwqUJ1Cam3gub14m8Jl/G60hOSL4wh6q9shN827bQm/7YofMnbRVZq KKxUqzXtZXcISE3GH5R4UmPEdY/u5ZYL1siEZ71mdhQGnFSdhLQyz90kw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=OilfjDLIZZFgT1MKes1rgGsHvhKPCbnciYBLgxXw6SY=; b=Z0h3CBIa 48bungS1PXU9n5TH2ZKTo6otqfnjDN1PnOKOMV2rut0eYX+hyP1UI0kmYXFidF7w WDwV7oJRpf3NOB9IBU8QlHz2X3j8W5S1m/lq/Yx6GjHvUifaPKure3bYlNViDbx+ I0sENWDkR1VnDeZwHePNqaogDBxt1hQCri0oxOzD38Cnqcckico4y9MnoGS4HOz4 Fl0WYEAmj1SwisXWuzzdq6Xlsq+J1GPlOTKODkbFSqsnkk1qvSBkFtjGoukblfHG TkkdRg2Nny3THNV01TgJQA8xtV+p8WV45gcMFU0mfVZ4MVCN3UkQ1WZwJrApRxpJ +9IUMDZBKPocKQ== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedrtdeigdduhedvucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpefmlhgruhhs ucflvghnshgvnhcuoehithhssehirhhrvghlvghvrghnthdrughkqeenucggtffrrghtth gvrhhnpeeuleetgeeiuefhgfekfefgveejiefgteekiedtgfdtieefhfdthfefueffvefg keenucfkphepkedtrdduieejrdelkedrudeltdenucevlhhushhtvghrufhiiigvpedvne curfgrrhgrmhepmhgrihhlfhhrohhmpehithhssehirhhrvghlvghvrghnthdrughk X-ME-Proxy: Received: from apples.local (80-167-98-190-cable.dk.customer.tdc.net [80.167.98.190]) by mail.messagingengine.com (Postfix) with ESMTPA id 5C32B3064610; Fri, 18 Sep 2020 16:36:32 -0400 (EDT) From: Klaus Jensen To: qemu-devel@nongnu.org Subject: [PATCH v2 06/17] hw/block/nvme: add a lba to bytes helper Date: Fri, 18 Sep 2020 22:36:10 +0200 Message-Id: <20200918203621.602915-7-its@irrelevant.dk> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200918203621.602915-1-its@irrelevant.dk> References: <20200918203621.602915-1-its@irrelevant.dk> MIME-Version: 1.0 Received-SPF: pass client-ip=66.111.4.221; envelope-from=its@irrelevant.dk; helo=new1-smtp.messagingengine.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/18 16:36:27 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Eduardo Habkost , qemu-block@nongnu.org, "Michael S. Tsirkin" , Klaus Jensen , Max Reitz , Klaus Jensen , Keith Busch Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Klaus Jensen Add the nvme_l2b helper and use it for converting NLB and SLBA to byte counts and offsets. Signed-off-by: Klaus Jensen --- hw/block/nvme.h | 6 ++++++ hw/block/nvme.c | 12 ++++-------- 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/hw/block/nvme.h b/hw/block/nvme.h index 52ba794f2e9a..1675c1e0755c 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -77,6 +77,12 @@ static inline uint8_t nvme_ns_lbads(NvmeNamespace *ns) return nvme_ns_lbaf(ns)->ds; } +/* convert an LBA to the equivalent in bytes */ +static inline size_t nvme_l2b(NvmeNamespace *ns, uint64_t lba) +{ + return lba << nvme_ns_lbads(ns); +} + #define TYPE_NVME "nvme" #define NVME(obj) \ OBJECT_CHECK(NvmeCtrl, (obj), TYPE_NVME) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 10568cbf8761..62db87460413 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -644,12 +644,10 @@ static uint16_t nvme_write_zeroes(NvmeCtrl *n, NvmeRequest *req) { NvmeRwCmd *rw = (NvmeRwCmd *)&req->cmd; NvmeNamespace *ns = req->ns; - const uint8_t lba_index = NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas); - const uint8_t data_shift = ns->id_ns.lbaf[lba_index].ds; uint64_t slba = le64_to_cpu(rw->slba); uint32_t nlb = le16_to_cpu(rw->nlb) + 1; - uint64_t offset = slba << data_shift; - uint32_t count = nlb << data_shift; + uint64_t offset = nvme_l2b(ns, slba); + uint32_t count = nvme_l2b(ns, nlb); uint16_t status; trace_pci_nvme_write_zeroes(nvme_cid(req), slba, nlb); @@ -674,10 +672,8 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeRequest *req) uint32_t nlb = le32_to_cpu(rw->nlb) + 1; uint64_t slba = le64_to_cpu(rw->slba); - uint8_t lba_index = NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas); - uint8_t data_shift = ns->id_ns.lbaf[lba_index].ds; - uint64_t data_size = (uint64_t)nlb << data_shift; - uint64_t data_offset = slba << data_shift; + uint64_t data_size = nvme_l2b(ns, nlb); + uint64_t data_offset = nvme_l2b(ns, slba); int is_write = rw->opcode == NVME_CMD_WRITE ? 1 : 0; enum BlockAcctType acct = is_write ? BLOCK_ACCT_WRITE : BLOCK_ACCT_READ; uint16_t status;