From patchwork Mon Jun 29 19:50:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Klaus Jensen X-Patchwork-Id: 1319108 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=none (p=none dis=none) header.from=irrelevant.dk 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 49wdTJ5TCdz9sVp for ; Tue, 30 Jun 2020 05:53:24 +1000 (AEST) Received: from localhost ([::1]:39156 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jpzqE-0002im-EH for incoming@patchwork.ozlabs.org; Mon, 29 Jun 2020 15:53:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57506) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jpznV-00079L-Qx; Mon, 29 Jun 2020 15:50:33 -0400 Received: from charlie.dont.surf ([128.199.63.193]:46176) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jpznS-0005xP-Ub; Mon, 29 Jun 2020 15:50:33 -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 718EFBF80D; Mon, 29 Jun 2020 19:50:27 +0000 (UTC) From: Klaus Jensen To: qemu-block@nongnu.org Subject: [PATCH 10/17] hw/block/nvme: add check for mdts Date: Mon, 29 Jun 2020 21:50:10 +0200 Message-Id: <20200629195017.1217056-11-its@irrelevant.dk> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200629195017.1217056-1-its@irrelevant.dk> References: <20200629195017.1217056-1-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 = 2020/06/29 14:26:53 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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 , Klaus Jensen , qemu-devel@nongnu.org, Max Reitz , Klaus Jensen , Keith Busch , Maxim Levitsky Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" 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 | 32 ++++++++++++++++++++++++++++++-- hw/block/nvme.h | 1 + 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 7cd37ec91823..d5dff6869b69 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -18,9 +18,10 @@ * Usage: add options: * -drive file=,if=none,id= * -device nvme,drive=,serial=,id=, \ - * cmb_size_mb=, \ + * [cmb_size_mb=,] \ * [pmrdev=,] \ - * max_ioqpairs= + * [max_ioqpairs=,] \ + * [mdts=] * * 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. @@ -518,6 +519,17 @@ static void nvme_clear_events(NvmeCtrl *n, uint8_t event_type) } } +static inline uint16_t nvme_check_mdts(NvmeCtrl *n, size_t len) +{ + uint8_t mdts = n->params.mdts; + + if (mdts && len > n->page_size << mdts) { + 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) { @@ -611,6 +623,13 @@ static uint16_t nvme_rw(NvmeCtrl *n, NvmeNamespace *ns, NvmeCmd *cmd, trace_pci_nvme_rw(is_write ? "write" : "read", nlb, data_size, slba); + status = nvme_check_mdts(n, data_size); + if (status) { + trace_pci_nvme_err_mdts(nvme_cid(req), data_size); + block_acct_invalid(blk_get_stats(n->conf.blk), acct); + return status; + } + status = nvme_check_bounds(n, ns, slba, nlb); if (status) { trace_pci_nvme_err_invalid_lba_range(slba, nlb, ns->id_ns.nsze); @@ -904,6 +923,7 @@ 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; numdl = (dw10 >> 16); numdu = (dw11 & 0xffff); @@ -919,6 +939,12 @@ static uint16_t nvme_get_log(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req) trace_pci_nvme_get_log(nvme_cid(req), lid, lsp, rae, len, off); + status = nvme_check_mdts(n, len); + if (status) { + trace_pci_nvme_err_mdts(nvme_cid(req), len); + return status; + } + switch (lid) { case NVME_LOG_ERROR_INFO: return nvme_error_info(n, cmd, rae, len, off, req); @@ -2227,6 +2253,7 @@ static void nvme_init_ctrl(NvmeCtrl *n, PCIDevice *pci_dev) id->ieee[0] = 0x00; id->ieee[1] = 0x02; id->ieee[2] = 0xb3; + id->mdts = n->params.mdts; id->ver = cpu_to_le32(NVME_SPEC_VER); id->oacs = cpu_to_le16(0); @@ -2345,6 +2372,7 @@ static Property nvme_props[] = { DEFINE_PROP_UINT16("msix_qsize", NvmeCtrl, params.msix_qsize, 65), DEFINE_PROP_UINT8("aerl", NvmeCtrl, params.aerl, 3), DEFINE_PROP_UINT32("aer_max_queued", NvmeCtrl, params.aer_max_queued, 64), + DEFINE_PROP_UINT8("mdts", NvmeCtrl, params.mdts, 7), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/block/nvme.h b/hw/block/nvme.h index 0169e1736f0c..b5ce51c6e84b 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -11,6 +11,7 @@ typedef struct NvmeParams { uint32_t cmb_size_mb; uint8_t aerl; uint32_t aer_max_queued; + uint8_t mdts; } NvmeParams; typedef struct NvmeAsyncEvent { diff --git a/hw/block/trace-events b/hw/block/trace-events index 6d0cd588c786..5d7d4679650b 100644 --- a/hw/block/trace-events +++ b/hw/block/trace-events @@ -85,6 +85,7 @@ pci_nvme_mmio_shutdown_set(void) "shutdown bit set" pci_nvme_mmio_shutdown_cleared(void) "shutdown bit cleared" # nvme traces for error conditions +pci_nvme_err_mdts(uint16_t cid, size_t len) "cid %"PRIu16" len %"PRIu64"" pci_nvme_err_invalid_dma(void) "PRP/SGL is too small for transfer size" pci_nvme_err_invalid_prplist_ent(uint64_t prplist) "PRP list entry is null or not page aligned: 0x%"PRIx64"" pci_nvme_err_invalid_prp2_align(uint64_t prp2) "PRP2 is not page aligned: 0x%"PRIx64""