From nobody Mon Feb 9 06:49:09 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1584378606; cv=none; d=zohomail.com; s=zohoarc; b=IbpoxExrv1dg5SsKPO4YFQwEw703cg0LfolDXmLkn8miErfR9RmVq7kcIN7h9UJfRz4tnXTcFNun2IFeD4otobwwO9WrTM2dyNMCElUtkH9SPPFcUwRPaKc4Ohob4e6vk4LqUrEw5LuzGvWIceZvwZkThafeLnjImG0qsTVHt3Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1584378606; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=MQOp4tSW0/1V3udzENKk2FfdZjt0Rst49NNCaKfABdc=; b=WJbJStOwyKGhxnqN1IGcbFsisy8MQkiKbof9ZDdalZIRuydKnUJ9OYh6uEE/V/UPWvX6SBsnWb3Oufp+0ljaQFCiWlzwHydSdggbPGnsMWZX4JR8tjNcHCGCxYKjSqALMqDQKMKqIukYlr0OVyuD9CkDd8MQRmN9C+EjPQ+0I9Y= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1584378606971699.826894057419; Mon, 16 Mar 2020 10:10:06 -0700 (PDT) Received: from localhost ([::1]:43188 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jDtFd-0003gb-V2 for importer@patchew.org; Mon, 16 Mar 2020 13:10:06 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54350) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jDqlM-0000V9-Gy for qemu-devel@nongnu.org; Mon, 16 Mar 2020 10:30:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jDqlI-0005HS-CB for qemu-devel@nongnu.org; Mon, 16 Mar 2020 10:30:40 -0400 Received: from charlie.dont.surf ([128.199.63.193]:48824) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jDql9-000268-Aq; Mon, 16 Mar 2020 10:30:27 -0400 Received: from apples.local (80-62-117-52-mobile.dk.customer.tdc.net [80.62.117.52]) by charlie.dont.surf (Postfix) with ESMTPSA id C3952BF9F3; Mon, 16 Mar 2020 14:29:50 +0000 (UTC) From: Klaus Jensen To: qemu-block@nongnu.org Subject: [PATCH v6 30/42] nvme: add check for mdts Date: Mon, 16 Mar 2020 07:29:16 -0700 Message-Id: <20200316142928.153431-31-its@irrelevant.dk> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200316142928.153431-1-its@irrelevant.dk> References: <20200316142928.153431-1-its@irrelevant.dk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 128.199.63.193 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 , Beata Michalska , qemu-devel@nongnu.org, Max Reitz , Klaus Jensen , Keith Busch , Javier Gonzalez , Maxim Levitsky Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Klaus Jensen Add 'mdts' device parameter to control the Maximum Data Transfer Size of the controller and check that it is respected. Signed-off-by: Klaus Jensen Reviewed-by: Maxim Levitsky --- hw/block/nvme.c | 29 ++++++++++++++++++++++++++++- hw/block/nvme.h | 4 +++- hw/block/trace-events | 1 + 3 files changed, 32 insertions(+), 2 deletions(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index ba520c76bae5..7d5340c272c6 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -19,7 +19,8 @@ * -drive file=3D,if=3Dnone,id=3D * -device nvme,drive=3D,serial=3D,id=3D, \ * cmb_size_mb=3D, \ - * max_ioqpairs=3D + * max_ioqpairs=3D, \ + * mdts=3D * * Note cmb_size_mb denotes size of CMB in MB. CMB is assumed to be at * offset 0 in BAR2 and supports only WDS, RDS and SQS for now. @@ -491,6 +492,19 @@ static void nvme_clear_events(NvmeCtrl *n, uint8_t eve= nt_type) } } =20 +static inline uint16_t nvme_check_mdts(NvmeCtrl *n, size_t len, + NvmeRequest *req) +{ + uint8_t mdts =3D n->params.mdts; + + if (mdts && len > n->page_size << mdts) { + trace_nvme_dev_err_mdts(nvme_cid(req), n->page_size << mdts, len); + return NVME_INVALID_FIELD | NVME_DNR; + } + + return NVME_SUCCESS; +} + static inline uint16_t nvme_check_bounds(NvmeCtrl *n, NvmeNamespace *ns, uint64_t slba, uint32_t nlb, NvmeRequest *req) @@ -581,6 +595,12 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns= , NvmeCmd *cmd, =20 trace_nvme_dev_rw(is_write ? "write" : "read", nlb, data_size, slba); =20 + status =3D nvme_check_mdts(n, data_size, req); + if (status) { + block_acct_invalid(blk_get_stats(n->conf.blk), acct); + return status; + } + status =3D nvme_check_bounds(n, ns, slba, nlb, req); if (status) { block_acct_invalid(blk_get_stats(n->conf.blk), acct); @@ -871,6 +891,7 @@ static uint16_t nvme_get_log(NvmeCtrl *n, NvmeCmd *cmd,= NvmeRequest *req) uint32_t numdl, numdu; uint64_t off, lpol, lpou; size_t len; + uint16_t status; =20 numdl =3D (dw10 >> 16); numdu =3D (dw11 & 0xffff); @@ -886,6 +907,11 @@ static uint16_t nvme_get_log(NvmeCtrl *n, NvmeCmd *cmd= , NvmeRequest *req) =20 trace_nvme_dev_get_log(nvme_cid(req), lid, lsp, rae, len, off); =20 + status =3D nvme_check_mdts(n, len, req); + if (status) { + return status; + } + switch (lid) { case NVME_LOG_ERROR_INFO: return nvme_error_info(n, cmd, rae, len, off, req); @@ -2011,6 +2037,7 @@ static void nvme_init_ctrl(NvmeCtrl *n) id->ieee[0] =3D 0x00; id->ieee[1] =3D 0x02; id->ieee[2] =3D 0xb3; + id->mdts =3D params->mdts; id->ver =3D cpu_to_le32(NVME_SPEC_VER); id->oacs =3D cpu_to_le16(0); =20 diff --git a/hw/block/nvme.h b/hw/block/nvme.h index 442b17bf1701..b05c2153aebf 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -9,7 +9,8 @@ DEFINE_PROP_UINT32("num_queues", _state, _props.num_queues, 0), \ DEFINE_PROP_UINT32("max_ioqpairs", _state, _props.max_ioqpairs, 64), \ DEFINE_PROP_UINT8("aerl", _state, _props.aerl, 3), \ - DEFINE_PROP_UINT32("aer_max_queued", _state, _props.aer_max_queued, 64) + DEFINE_PROP_UINT32("aer_max_queued", _state, _props.aer_max_queued, 64= ), \ + DEFINE_PROP_UINT8("mdts", _state, _props.mdts, 7) =20 typedef struct NvmeParams { char *serial; @@ -18,6 +19,7 @@ typedef struct NvmeParams { uint32_t cmb_size_mb; uint8_t aerl; uint32_t aer_max_queued; + uint8_t mdts; } NvmeParams; =20 typedef struct NvmeAsyncEvent { diff --git a/hw/block/trace-events b/hw/block/trace-events index e31e652fa04e..2df6aa38df1b 100644 --- a/hw/block/trace-events +++ b/hw/block/trace-events @@ -79,6 +79,7 @@ nvme_dev_mmio_doorbell_cq(uint16_t cqid, uint16_t new_hea= d) "cqid %"PRIu16" new_ nvme_dev_mmio_doorbell_sq(uint16_t sqid, uint16_t new_tail) "cqid %"PRIu16= " new_tail %"PRIu16"" =20 # nvme traces for error conditions +nvme_dev_err_mdts(uint16_t cid, size_t mdts, size_t len) "cid %"PRIu16" md= ts %"PRIu64" len %"PRIu64"" nvme_dev_err_invalid_dma(void) "PRP/SGL is too small for transfer size" nvme_dev_err_invalid_prplist_ent(uint64_t prplist) "PRP list entry is null= or not page aligned: 0x%"PRIx64"" nvme_dev_err_invalid_prp2_align(uint64_t prp2) "PRP2 is not page aligned: = 0x%"PRIx64"" --=20 2.25.1