From patchwork Wed Jul 29 22:06:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Klaus Jensen X-Patchwork-Id: 1338528 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=irrelevant.dk Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=irrelevant.dk header.i=@irrelevant.dk header.a=rsa-sha256 header.s=default header.b=mp4ApttT; dkim-atps=neutral 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 ozlabs.org (Postfix) with ESMTPS id 4BH72C4HP6z9sRN for ; Thu, 30 Jul 2020 08:07:31 +1000 (AEST) Received: from localhost ([::1]:41652 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k0uET-0007J3-CI for incoming@patchwork.ozlabs.org; Wed, 29 Jul 2020 18:07:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53768) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k0uDr-0006sj-Db; Wed, 29 Jul 2020 18:06:51 -0400 Received: from charlie.dont.surf ([128.199.63.193]:34730) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k0uDo-0008Vs-RF; Wed, 29 Jul 2020 18:06:51 -0400 Received: from apples.local (80-167-98-190-cable.dk.customer.tdc.net [80.167.98.190]) by charlie.dont.surf (Postfix) with ESMTPSA id 052A9BFB38; Wed, 29 Jul 2020 22:06:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=irrelevant.dk; s=default; t=1596060406; bh=kaCNJXY/14lxAeLsvkBzagbhGzL6kCG/GytOR6K4NiA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mp4ApttT0y+PRlDq11HHD9Y1YoLL87vTeX28vEWXzT9NjDhS7x9fxH1dX3XZ6xyVX Nl67kAKatbrUZKsSd6Yq9LMUPiInE19akjhcUG9hZYqN7WA5psiBYO2PxFaHQvaiZF q1uYT6fYVk98MWU9pGl7bw0l/xnhBJFwuljU3ORkoUTzwvJg0eCE1/zCPe5ysQ8FbX +3oTHH/2O9uoqZ8t55OvVJ6rDo3oIfy2nwpmmHKpsDvh9F5Ac2qoV4tBjGr1aFUl7Y JZhADVPOFbGZZ1rybzZHBafW9ZPghyXpyr2msXbSEPxggeP002cFkH00QzcJQbBXnA FSRFp5fbVH3PQ== From: Klaus Jensen To: qemu-devel@nongnu.org Subject: [PATCH v2 08/16] hw/block/nvme: add request mapping helper Date: Thu, 30 Jul 2020 00:06:30 +0200 Message-Id: <20200729220638.344477-9-its@irrelevant.dk> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200729220638.344477-1-its@irrelevant.dk> References: <20200729220638.344477-1-its@irrelevant.dk> MIME-Version: 1.0 Received-SPF: pass client-ip=128.199.63.193; envelope-from=its@irrelevant.dk; helo=charlie.dont.surf X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/29 14:23:15 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=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: Fam Zheng , Kevin Wolf , qemu-block@nongnu.org, Klaus Jensen , Maxim Levitsky , Klaus Jensen , Andrzej Jakowski , Minwoo Im , Keith Busch , Max Reitz Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Klaus Jensen Introduce the nvme_map helper to remove some noise in the main nvme_rw function. Signed-off-by: Klaus Jensen Reviewed-by: Maxim Levitsky Reviewed-by: Minwoo Im --- hw/block/nvme.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 952afbb05175..198a26890e0c 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -415,6 +415,15 @@ static uint16_t nvme_dma_prp(NvmeCtrl *n, uint8_t *ptr, uint32_t len, return status; } +static uint16_t nvme_map_dptr(NvmeCtrl *n, NvmeCmd *cmd, size_t len, + NvmeRequest *req) +{ + uint64_t prp1 = le64_to_cpu(cmd->dptr.prp1); + uint64_t prp2 = le64_to_cpu(cmd->dptr.prp2); + + return nvme_map_prp(&req->qsg, &req->iov, prp1, prp2, len, n); +} + static void nvme_post_cqes(void *opaque) { NvmeCQueue *cq = opaque; @@ -602,8 +611,6 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, NvmeCmd *cmd, NvmeRwCmd *rw = (NvmeRwCmd *)cmd; uint32_t nlb = le32_to_cpu(rw->nlb) + 1; uint64_t slba = le64_to_cpu(rw->slba); - uint64_t prp1 = le64_to_cpu(rw->dptr.prp1); - uint64_t prp2 = le64_to_cpu(rw->dptr.prp2); uint8_t lba_index = NVME_ID_NS_FLBAS_INDEX(ns->id_ns.flbas); uint8_t data_shift = ns->id_ns.lbaf[lba_index].ds; @@ -620,7 +627,7 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, NvmeCmd *cmd, return NVME_LBA_RANGE | NVME_DNR; } - if (nvme_map_prp(&req->qsg, &req->iov, prp1, prp2, data_size, n)) { + if (nvme_map_dptr(n, cmd, data_size, req)) { block_acct_invalid(blk_get_stats(n->conf.blk), acct); return NVME_INVALID_FIELD | NVME_DNR; }