From patchwork Sun Apr 28 09:05:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13645923 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 667C3C4345F for ; Sun, 28 Apr 2024 09:06:43 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s10U5-0007Vy-6J; Sun, 28 Apr 2024 05:06:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s10U2-0007V2-PB for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:06 -0400 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s10U1-0003mY-8M for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:06 -0400 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-1e36b7e7dd2so29842295ad.1 for ; Sun, 28 Apr 2024 02:06:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1714295164; x=1714899964; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=41HOhmfFzvzHUWDzT1tLGC+0kqqS1QTmSsIo/CJC9aw=; b=dCMdHeAU/Z2mvUOY1034P82m1jOTLAXhAEpngd+P1vmFvFl0+fuJWiIz/81vRRbicp YmsXvDVpulaAf2Cm6MunSYOAXcBeLq/YsW4q9P8ihu8Xh8OIC7UJylxgu9O9aRlVgAVh CU2Su9xOmrk/fQtzKF2YcxdWSZddkKB7TYsWr8kWjK9WD/b98g6LwybGpL45xTQsum3n 5yB4F4TPibmbKOpOFWQh8e89gD+J6A4WxZB4yuM7kosoSY7qY27G1xqcWDjn1JTEFG8P 9wuWv4YExzBcLHGNA97M/anzX0cCjv0VgqsIHTt/I3ohHEengjQYrMNB0GkBOzqYIJb/ bfnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714295164; x=1714899964; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=41HOhmfFzvzHUWDzT1tLGC+0kqqS1QTmSsIo/CJC9aw=; b=MdaDtKTBTDA/ayMYtcp/NCgXzKfIYGGHda3r2B0NuMAs1DIXEKOqE/E1KlmmniUeAH DAvDvjDErI1LYuF3vdam8iJlecZqNuaoRpLuvKGhDWQxHM0lIrh9iCEdiv350jBR1Go8 7EusGtSXExTbpSAMctPhszgkWemSIJvFWWzQIJFfOtetT6LAW/lSK5ZmtgU1FI8A7hcf UO7MWBKwCBjCYlqKOGB/WaKSgJX7WVGnjk9zugUwfbv7fAgjqr2QXIHU0bJ+tnICz/H5 iEuB5jZ+w5YRRH+F3w9YEzJCfL1YElBOg4uscb3BTEMIEMq08b6Hse+yxe3udoysbUpM T5tA== X-Gm-Message-State: AOJu0YzLJR0muM4lCSVZDE+Cmsh3lLZYlpzuWwZcGt6C8MH72ADE2WGS Ba9nC1rWr6Isn6lYY5LoD7JodrpaxZ+f85mPjVfO05Tv82N/h78AD8OmohQZd3Y= X-Google-Smtp-Source: AGHT+IGAK9xbxuVHKL6BxfpFJd/TgK7Wt/UqqkOwZim4z10n7qUEPFekzjac4mu6uImKqK25Xlrfwg== X-Received: by 2002:a17:902:e951:b0:1e3:cf2b:7151 with SMTP id b17-20020a170902e95100b001e3cf2b7151mr4912125pll.59.1714295163756; Sun, 28 Apr 2024 02:06:03 -0700 (PDT) Received: from localhost ([157.82.202.162]) by smtp.gmail.com with UTF8SMTPSA id k12-20020a170902f28c00b001e8123f90f1sm18146595plc.105.2024.04.28.02.06.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 28 Apr 2024 02:06:03 -0700 (PDT) From: Akihiko Odaki Date: Sun, 28 Apr 2024 18:05:41 +0900 Subject: [PATCH RFC v4 1/7] hw/pci: Do not add ROM BAR for SR-IOV VF MIME-Version: 1.0 Message-Id: <20240428-sriov-v4-1-ac8ac6212982@daynix.com> References: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> In-Reply-To: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> To: "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jason Wang , Sriram Yagnaraman , Keith Busch , Klaus Jensen Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Yui Washizu , Akihiko Odaki X-Mailer: b4 0.14-dev-a718f Received-SPF: none client-ip=2607:f8b0:4864:20::62e; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x62e.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org A SR-IOV VF cannot have a ROM BAR. Co-developed-by: Yui Washizu Signed-off-by: Akihiko Odaki --- hw/pci/pci.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index cb5ac46e9f27..201ff64e11cc 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2359,6 +2359,14 @@ static void pci_add_option_rom(PCIDevice *pdev, bool is_default_rom, return; } + if (pci_is_vf(pdev)) { + if (pdev->rom_bar != UINT32_MAX) { + error_setg(errp, "ROM BAR cannot be enabled for SR-IOV VF"); + } + + return; + } + if (load_file || pdev->romsize == UINT32_MAX) { path = qemu_find_file(QEMU_FILE_TYPE_BIOS, pdev->romfile); if (path == NULL) { From patchwork Sun Apr 28 09:05:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13645925 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 69EAEC25B10 for ; Sun, 28 Apr 2024 09:06:43 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s10U9-0007aw-6o; Sun, 28 Apr 2024 05:06:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s10U7-0007Ys-9y for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:11 -0400 Received: from mail-pj1-x102d.google.com ([2607:f8b0:4864:20::102d]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s10U5-0003oH-R7 for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:10 -0400 Received: by mail-pj1-x102d.google.com with SMTP id 98e67ed59e1d1-2ac16b59fbeso3049358a91.2 for ; Sun, 28 Apr 2024 02:06:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1714295168; x=1714899968; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=mRiSDh2hxalsIQeLxyFxc+nQD/ypYo8m/u+/Io1QRYw=; b=hs/zSCbk3SgQCL0Gc014sqP1kPQgHrE5O/mJvzUv6qHdgQKcBGFwjflJC2GJwbl9YT TK0ftv5Zs1ktFKWMATSpQ/OiCghy5FbFwVe+wiA34PNZo4OjQtFznZsRfAXa/W/iqAPn Vy5EKT3dAojHiTNloMCbhJCxmwqtJj0/zsowTUA9UfyuIj4T97yE3ZnN9kmEbgpSgQYH 7hGMeYSZwE4c6W1fDSTXc5YCe0PVy70qYHdHDG0M3oc7VlSQTpj2KdvWDU9o1vqad1on WgCTZYbhKovs5q5pC1LkbWnb0tZqY/u26gUNQQ3k3isZef87tzKhrwWjxj6tC3lnJtBn KfPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714295168; x=1714899968; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=mRiSDh2hxalsIQeLxyFxc+nQD/ypYo8m/u+/Io1QRYw=; b=vUoI6bshDbtCS9MR7RTFWEVPazoiXZCCAT5jQ/WCOw6YfAZXPxoTdreqDwAzAlj2vy x28d30+eApbolOKZKJlwaZOY3MlWvywU5g0sYdbkaR3ryZxM++5bq+Ds3/IB+agMmHG+ p7Km+Mb9O+t32w2Sn9F0ZF374OgLd/AMilYkiZuTmJsbeBCzbZ396DrcTeOznJ/b+lAT A23u8xkBFVsIfuL6WtaGwBsj6+Li6sBzqLGLoQ6LK7EU22DtGVZlLqQvD2Y6Eh7odCox mU17U6L9Blm9YEjvOzoWa0Qbwozt5Z5uMzi4zPuthEUhi3219ySM5RU1VplN4RY7CWDW GHMw== X-Gm-Message-State: AOJu0YxG3VV8PbUZkkFPVkFaanyEOqF1nS8iptab+Xza0cLfiKZkhSEG P+GgVaSdlQ0s8WwitkJgkj0mejrN+sj4ZGPKREh+1xYLG4BkOA23fL5C696sjTU= X-Google-Smtp-Source: AGHT+IGLJ3d2wB1FvT/X9QJ8trVoxQVDsxuWTM6Mswqsbnouw7oSP8EUOvPWsd0q3rSpRIBWixCE9w== X-Received: by 2002:a17:90b:3a91:b0:2ad:ec71:b7e5 with SMTP id om17-20020a17090b3a9100b002adec71b7e5mr6519203pjb.33.1714295168419; Sun, 28 Apr 2024 02:06:08 -0700 (PDT) Received: from localhost ([157.82.202.162]) by smtp.gmail.com with UTF8SMTPSA id db13-20020a17090ad64d00b002b0e8d4c426sm2060447pjb.11.2024.04.28.02.06.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 28 Apr 2024 02:06:08 -0700 (PDT) From: Akihiko Odaki Date: Sun, 28 Apr 2024 18:05:42 +0900 Subject: [PATCH RFC v4 2/7] hw/pci: Fix SR-IOV VF number calculation MIME-Version: 1.0 Message-Id: <20240428-sriov-v4-2-ac8ac6212982@daynix.com> References: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> In-Reply-To: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> To: "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jason Wang , Sriram Yagnaraman , Keith Busch , Klaus Jensen Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Yui Washizu , Akihiko Odaki X-Mailer: b4 0.14-dev-a718f Received-SPF: none client-ip=2607:f8b0:4864:20::102d; envelope-from=akihiko.odaki@daynix.com; helo=mail-pj1-x102d.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org pci_config_get_bar_addr() had a division by vf_stride. vf_stride needs to be non-zero when there are multiple VFs, but the specification does not prohibit to make it zero when there is only one VF. Do not perform the division for the first VF to avoid division by zero. Signed-off-by: Akihiko Odaki --- hw/pci/pci.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 201ff64e11cc..dbecb3d4aa42 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -1437,7 +1437,11 @@ static pcibus_t pci_config_get_bar_addr(PCIDevice *d, int reg, pci_get_word(pf->config + sriov_cap + PCI_SRIOV_VF_OFFSET); uint16_t vf_stride = pci_get_word(pf->config + sriov_cap + PCI_SRIOV_VF_STRIDE); - uint32_t vf_num = (d->devfn - (pf->devfn + vf_offset)) / vf_stride; + uint32_t vf_num = d->devfn - (pf->devfn + vf_offset); + + if (vf_num) { + vf_num /= vf_stride; + } if (type & PCI_BASE_ADDRESS_MEM_TYPE_64) { new_addr = pci_get_quad(pf->config + bar); From patchwork Sun Apr 28 09:05:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13645930 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 6978BC4345F for ; Sun, 28 Apr 2024 09:08:11 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s10UE-0007cL-Bu; Sun, 28 Apr 2024 05:06:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s10UC-0007bm-JX for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:16 -0400 Received: from mail-pl1-x636.google.com ([2607:f8b0:4864:20::636]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s10UA-0003qj-G5 for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:16 -0400 Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1e5aa82d1f6so29474575ad.0 for ; Sun, 28 Apr 2024 02:06:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1714295173; x=1714899973; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=sosBLOLGJ/+f5xdSXkG6/l52CVTrWiRMfrUK+w7fEV4=; b=b1gPYdVCwmSjmZohAO6RCknrHrpx5fHTJduavSTFovE2N1Tna4Zl6HeoEDp4YYgLe9 33n8j0RfCF3qpQEaZ24ffc3v77qvc0hiBohh2PRVQAs+69/oLRtrr1p7MnBQlCfUWMGg 3n9u+jNgI0kWtkn451xC6e4o47hWhra1hbA7Om/PUnqqXsW+JvVn04cxf9eOow6TU+rf hGSakq+8K7+VZ3c/Rw1K45ghVlGDV5Y72wFrzMQzVT5JcK7hWnG003IIqKCAqfFl1nx7 wUbQbXJxFHYJrCtVZRR+eEWta4BisnK111iPGoOUJ1LdxGbH3n6HrDADpVfPqy00e2ww VnsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714295173; x=1714899973; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=sosBLOLGJ/+f5xdSXkG6/l52CVTrWiRMfrUK+w7fEV4=; b=hNTxG9Lc3860DrKwZUuiGU8989Zx3BuTZq+0JawfpEEmXMUtAISKO7UGjbD/avOetk uWcQKyswzgqxE3VmgH6lNOJ7xwoGSVwH09UAf1UqGmjkcU5OiRJHVOi9zud/KdCH4TBH W4gStsrre7ydnFg93vwUqnIXkV34fVVLManm6aJnksjPANP6X3GSbWUkuyPwB36Nuxkf ImBkFdtUceIQUtPXdy0KD0ineHc7vivr+rcr/eGaQ+DRUWYn5uG8pJV4kUcnEuzEVAIq 0ZpTMopFAq2j23nuxdEMVS1gFFZN8HgHXzQLwLpwDN+m74XmdQwu1kaWk68ZIL0y6Kwm IFeQ== X-Gm-Message-State: AOJu0YydGFS4xUDLvXOHDqltX+LSq9/OiiFq286ezkjCbE4JnHzx+xxd BjaV9vQXathNQWZX9k+DESkrkvIYJbKDOsTVaaDTJde2JIuAWN4yGMDVdnZY1Rs= X-Google-Smtp-Source: AGHT+IHHC91YYorDAzbjDdrw6L2Lv3mm10pUM6/aiGMKfwQc3vsLWSumfdrldzuI0yjLPzWmLZIT6A== X-Received: by 2002:a17:903:2312:b0:1ea:964f:9b0b with SMTP id d18-20020a170903231200b001ea964f9b0bmr6554933plh.5.1714295173086; Sun, 28 Apr 2024 02:06:13 -0700 (PDT) Received: from localhost ([157.82.202.162]) by smtp.gmail.com with UTF8SMTPSA id bf5-20020a170902b90500b001e7b82f33eesm18171672plb.291.2024.04.28.02.06.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 28 Apr 2024 02:06:12 -0700 (PDT) From: Akihiko Odaki Date: Sun, 28 Apr 2024 18:05:43 +0900 Subject: [PATCH RFC v4 3/7] pcie_sriov: Ensure PF and VF are mutually exclusive MIME-Version: 1.0 Message-Id: <20240428-sriov-v4-3-ac8ac6212982@daynix.com> References: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> In-Reply-To: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> To: "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jason Wang , Sriram Yagnaraman , Keith Busch , Klaus Jensen Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Yui Washizu , Akihiko Odaki X-Mailer: b4 0.14-dev-a718f Received-SPF: none client-ip=2607:f8b0:4864:20::636; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x636.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org A device cannot be a SR-IOV PF and a VF at the same time. Signed-off-by: Akihiko Odaki --- hw/pci/pcie_sriov.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c index 56523ab4e833..ec8fc0757b92 100644 --- a/hw/pci/pcie_sriov.c +++ b/hw/pci/pcie_sriov.c @@ -42,6 +42,11 @@ bool pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset, uint8_t *cfg = dev->config + offset; uint8_t *wmask; + if (pci_is_vf(dev)) { + error_setg(errp, "a device cannot be a SR-IOV PF and a VF at the same time"); + return false; + } + if (total_vfs) { uint16_t ari_cap = pcie_find_capability(dev, PCI_EXT_CAP_ID_ARI); uint16_t first_vf_devfn = dev->devfn + vf_offset; From patchwork Sun Apr 28 09:05:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13645927 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id BAC9FC4345F for ; Sun, 28 Apr 2024 09:07:25 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s10UK-0007dB-4X; Sun, 28 Apr 2024 05:06:24 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s10UJ-0007cp-7x for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:23 -0400 Received: from mail-pf1-x42e.google.com ([2607:f8b0:4864:20::42e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s10UF-0003tj-VV for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:21 -0400 Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-6f26588dd5eso3012694b3a.0 for ; Sun, 28 Apr 2024 02:06:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1714295178; x=1714899978; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=nGIxKzJCDQjXBXXZTFBIShCWXnStqnqlbVDl8BPQr3M=; b=MXnZ0ZIbOhl+tt0AhtlcuLD/aqKJOu0poY8J/jotgmDsJcLBXOBrS0nip1Q8Mbv1FO S13Ka44mAqaIdWvaw1BLmR0mgUfBR0F0CcOciMJYl4CFi0DyFHoqnMSh+qaUsP3QyvsF 6MknJ7vQvijwRS8KtgOdDSTp+WtrdKUyDhqu3vGSn68DgBmNgz/cfLHPeLKBhDT6fRd2 UD4W3fc7RerX/nZOqfgHSJbmP6zJXz/sf+nT0PrTvff59C6vYIitn2jcEYQxyjMpzXEw m7D2VeBGVy+LN9KvkSZ5+Ssh6E8ICYPwrTsduIVIv35aGrF3aYJXAsCnx8JFr13+c6FP VrXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714295178; x=1714899978; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=nGIxKzJCDQjXBXXZTFBIShCWXnStqnqlbVDl8BPQr3M=; b=dWF10JyhmXQ+XVA5NEE9DQB9595D8b7Slo0gpia+4q+e/41bg+yXDLfz2IYUld4t3c N9XklpXUSi3jtWRk00PoyxhK1Zh3e/lpx1dDjCcWdPNeJml97vZ56vQX5ABOrHgmLyBL fL87b56cK6Ju1yn5vUxTBZdQC1jA78IYagEL58qtHNHP8M0sLv+zydfU230Ak3YPt8U2 w5zPYRHG6Iuwd+uq6USqYIYC3f6gpJx0wfCDDkFcUoxL4rSJQatyR6i/elUbeFFL9iKP 1uo3zTfn4NgR7S7EWB+3EeJ0h4Z/yZ/6p6Eb72WCVt0c98vGug+6PPGlBGHxv07q4G+Q bU4A== X-Gm-Message-State: AOJu0YzByrj55/oZNP4fyvrCHva8jNfA0qR2zGX9qMtMqgpctLokOE9i QjNMzQMUoSwPaCeP5UN5Yr8M62YgQpCKnF311F+rH3dz9mob3sY1yZ9qJaBaCYQ= X-Google-Smtp-Source: AGHT+IFmVKm1nxOG7xEt5aqtcuE34/Xe4X4KSrl6yJVV4av6yGXYCQFjPnHkNr+4qkKYEkblhxPRyQ== X-Received: by 2002:a05:6a20:5612:b0:1ac:4ea6:1a54 with SMTP id ir18-20020a056a20561200b001ac4ea61a54mr7963796pzc.38.1714295178732; Sun, 28 Apr 2024 02:06:18 -0700 (PDT) Received: from localhost ([157.82.202.162]) by smtp.gmail.com with UTF8SMTPSA id e21-20020a62ee15000000b006e729dd12d5sm17310801pfi.48.2024.04.28.02.06.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 28 Apr 2024 02:06:18 -0700 (PDT) From: Akihiko Odaki Date: Sun, 28 Apr 2024 18:05:44 +0900 Subject: [PATCH RFC v4 4/7] pcie_sriov: Check PCI Express for SR-IOV PF MIME-Version: 1.0 Message-Id: <20240428-sriov-v4-4-ac8ac6212982@daynix.com> References: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> In-Reply-To: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> To: "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jason Wang , Sriram Yagnaraman , Keith Busch , Klaus Jensen Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Yui Washizu , Akihiko Odaki X-Mailer: b4 0.14-dev-a718f Received-SPF: none client-ip=2607:f8b0:4864:20::42e; envelope-from=akihiko.odaki@daynix.com; helo=mail-pf1-x42e.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org SR-IOV requires PCI Express. Signed-off-by: Akihiko Odaki --- hw/pci/pcie_sriov.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c index ec8fc0757b92..3af0cc7d560a 100644 --- a/hw/pci/pcie_sriov.c +++ b/hw/pci/pcie_sriov.c @@ -42,6 +42,11 @@ bool pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset, uint8_t *cfg = dev->config + offset; uint8_t *wmask; + if (!pci_is_express(dev)) { + error_setg(errp, "PCI Express is required for SR-IOV PF"); + return false; + } + if (pci_is_vf(dev)) { error_setg(errp, "a device cannot be a SR-IOV PF and a VF at the same time"); return false; From patchwork Sun Apr 28 09:05:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13645926 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 6C18FC4345F for ; Sun, 28 Apr 2024 09:07:02 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s10US-0007ga-AT; Sun, 28 Apr 2024 05:06:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s10UQ-0007gF-Ov for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:30 -0400 Received: from mail-pl1-x62c.google.com ([2607:f8b0:4864:20::62c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s10UK-0003vO-Lu for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:29 -0400 Received: by mail-pl1-x62c.google.com with SMTP id d9443c01a7336-1e9320c2ef6so25338115ad.2 for ; Sun, 28 Apr 2024 02:06:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1714295183; x=1714899983; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=3DGuRf25zpt97dtQO9H18zaqAmnxyBU2T0H4x/77sK4=; b=HXl0Iw5IU02gAjws1ZS1xpyitNtMTslP9mG4bJU4yrI8Jpy5rrE2zpx08B4PZs/fTx 8Wz41rN9WLcsuzt/t4ytUFbEHtM60s7LYUmKcVkHSetdAEZQbOQzazzTpvKBL9D24tXv 1PD63UGn+e1fv46G2nm2bQeIr4AzVF/vz5ONc3aO6pQtPCT0+4ESA95qR/xaN0JXXHZ8 Du9ror/9nF7+vhwbvNy705iiCp2qhbryrPX9BFskHfJox/LdsZOMkXan7fs+PaKWyeif z1vx0L3u9XvSdFe4MKCbnwwy5+swxJHjfF9ayFIpyK5yLhnU5lZpOsn+QaUWtV+2ks6P 5Y3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714295183; x=1714899983; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3DGuRf25zpt97dtQO9H18zaqAmnxyBU2T0H4x/77sK4=; b=QEroLi7ikD4DvNWO4OnQTHHtF0aWWLLP/ygoXm5/7jrdZ9RuhSRnTDOB1l9wzMhwGR MDrKewLs8XLH+ave/uZmSrT0QEynr9/KpSUxvdJr5JcZlFWOATrjMv1WxDBvfq08h71/ D3B/Lk28uWDhWX9VZhYs4KDoQ8TqOFsnLtGYam1oQebnhFIDHHBjGBJaUVX1yAAwaPY7 MQEc31jzs1UfOi54kdU5x/9gJxVmm1xHDbpECsLhWkDG0SV2AjzLopTrcfqdXL7OwgyD XApdNfHMNBy9kY0tT6rHhYATu4afWedaJUSA+swEOPOtmtlipS9CY494inwbDSlrYWrY yFSQ== X-Gm-Message-State: AOJu0YzE/ZrwDmIsawghqZ8ZRUTumDOiUOsRPmVS1X+xE/mMqtfTeG/b oHR6XCtP0b+atXK5BpMciRQh84Hycpnm0MG19m7YyTrIwnf5ZQlGeCdkk077YOI= X-Google-Smtp-Source: AGHT+IEBUfulE/uaYlrPrSe6nnBW038ufOsKIk8wNYtCJMB72+rnQzgnNPtYwKrFCjzvUfoGi2fccw== X-Received: by 2002:a17:902:d4c7:b0:1eb:3ef7:1237 with SMTP id o7-20020a170902d4c700b001eb3ef71237mr5327634plg.50.1714295183300; Sun, 28 Apr 2024 02:06:23 -0700 (PDT) Received: from localhost ([157.82.202.162]) by smtp.gmail.com with UTF8SMTPSA id kg8-20020a170903060800b001ea699b79cbsm7648039plb.213.2024.04.28.02.06.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 28 Apr 2024 02:06:23 -0700 (PDT) From: Akihiko Odaki Date: Sun, 28 Apr 2024 18:05:45 +0900 Subject: [PATCH RFC v4 5/7] pcie_sriov: Allow user to create SR-IOV device MIME-Version: 1.0 Message-Id: <20240428-sriov-v4-5-ac8ac6212982@daynix.com> References: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> In-Reply-To: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> To: "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jason Wang , Sriram Yagnaraman , Keith Busch , Klaus Jensen Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Yui Washizu , Akihiko Odaki X-Mailer: b4 0.14-dev-a718f Received-SPF: none client-ip=2607:f8b0:4864:20::62c; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x62c.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org A user can create a SR-IOV device by specifying the PF with the sriov-pf property of the VFs. The VFs must be added before the PF. A user-creatable VF must have PCIDeviceClass::sriov_vf_user_creatable set. Such a VF cannot refer to the PF because it is created before the PF. A PF that user-creatable VFs can be attached calls pcie_sriov_pf_init_from_user_created_vfs() during realization and pcie_sriov_pf_exit() when exiting. Signed-off-by: Akihiko Odaki --- include/hw/pci/pci_device.h | 6 +- include/hw/pci/pcie_sriov.h | 19 +++ hw/pci/pci.c | 62 ++++++---- hw/pci/pcie_sriov.c | 288 +++++++++++++++++++++++++++++++++++--------- 4 files changed, 292 insertions(+), 83 deletions(-) diff --git a/include/hw/pci/pci_device.h b/include/hw/pci/pci_device.h index 6be0f989ebe0..eefd9d9a7b5a 100644 --- a/include/hw/pci/pci_device.h +++ b/include/hw/pci/pci_device.h @@ -37,6 +37,8 @@ struct PCIDeviceClass { uint16_t subsystem_id; /* only for header type = 0 */ const char *romfile; /* rom bar */ + + bool sriov_vf_user_creatable; }; enum PCIReqIDType { @@ -160,6 +162,8 @@ struct PCIDevice { /* ID of standby device in net_failover pair */ char *failover_pair_id; uint32_t acpi_index; + + char *sriov_pf; }; static inline int pci_intx(PCIDevice *pci_dev) @@ -192,7 +196,7 @@ static inline int pci_is_express_downstream_port(const PCIDevice *d) static inline int pci_is_vf(const PCIDevice *d) { - return d->exp.sriov_vf.pf != NULL; + return d->sriov_pf || d->exp.sriov_vf.pf != NULL; } static inline uint32_t pci_config_size(const PCIDevice *d) diff --git a/include/hw/pci/pcie_sriov.h b/include/hw/pci/pcie_sriov.h index d576a8c6be19..20626b5605c9 100644 --- a/include/hw/pci/pcie_sriov.h +++ b/include/hw/pci/pcie_sriov.h @@ -18,6 +18,7 @@ struct PCIESriovPF { uint8_t vf_bar_type[PCI_NUM_REGIONS]; /* Store type for each VF bar */ PCIDevice **vf; /* Pointer to an array of num_vfs VF devices */ + bool vf_user_created; /* If VFs are created by user */ }; struct PCIESriovVF { @@ -40,6 +41,24 @@ void pcie_sriov_pf_init_vf_bar(PCIDevice *dev, int region_num, void pcie_sriov_vf_register_bar(PCIDevice *dev, int region_num, MemoryRegion *memory); +/** + * pcie_sriov_pf_init_from_user_created_vfs() - Initialize PF with user-created + * VFs. + * @dev: A PCIe device being realized. + * @offset: The offset of the SR-IOV capability. + * @errp: pointer to Error*, to store an error if it happens. + * + * Return: + * * true - @dev is initialized as a PCIe SR-IOV PF. + * * false - @dev is not initialized because there is no SR-IOV VFs or an error + * occurred. + */ +bool pcie_sriov_pf_init_from_user_created_vfs(PCIDevice *dev, uint16_t offset, + Error **errp); + +bool pcie_sriov_register_device(PCIDevice *dev, Error **errp); +void pcie_sriov_unregister_device(PCIDevice *dev); + /* * Default (minimal) page size support values * as required by the SR/IOV standard: diff --git a/hw/pci/pci.c b/hw/pci/pci.c index dbecb3d4aa42..e79bb8b6b6fa 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -85,6 +85,7 @@ static Property pci_props[] = { QEMU_PCIE_ERR_UNC_MASK_BITNR, true), DEFINE_PROP_BIT("x-pcie-ari-nextfn-1", PCIDevice, cap_present, QEMU_PCIE_ARI_NEXTFN_1_BITNR, false), + DEFINE_PROP_STRING("sriov-pf", PCIDevice, sriov_pf), DEFINE_PROP_END_OF_LIST() }; @@ -959,13 +960,8 @@ static void pci_init_multifunction(PCIBus *bus, PCIDevice *dev, Error **errp) dev->config[PCI_HEADER_TYPE] |= PCI_HEADER_TYPE_MULTI_FUNCTION; } - /* - * With SR/IOV and ARI, a device at function 0 need not be a multifunction - * device, as it may just be a VF that ended up with function 0 in - * the legacy PCI interpretation. Avoid failing in such cases: - */ - if (pci_is_vf(dev) && - dev->exp.sriov_vf.pf->cap_present & QEMU_PCI_CAP_MULTIFUNCTION) { + /* SR/IOV is not handled here. */ + if (pci_is_vf(dev)) { return; } @@ -998,7 +994,8 @@ static void pci_init_multifunction(PCIBus *bus, PCIDevice *dev, Error **errp) } /* function 0 indicates single function, so function > 0 must be NULL */ for (func = 1; func < PCI_FUNC_MAX; ++func) { - if (bus->devices[PCI_DEVFN(slot, func)]) { + PCIDevice *device = bus->devices[PCI_DEVFN(slot, func)]; + if (device && !pci_is_vf(device)) { error_setg(errp, "PCI: %x.0 indicates single function, " "but %x.%x is already populated.", slot, slot, func); @@ -1283,6 +1280,7 @@ static void pci_qdev_unrealize(DeviceState *dev) pci_unregister_io_regions(pci_dev); pci_del_option_rom(pci_dev); + pcie_sriov_unregister_device(pci_dev); if (pc->exit) { pc->exit(pci_dev); @@ -1314,7 +1312,6 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num, pcibus_t size = memory_region_size(memory); uint8_t hdr_type; - assert(!pci_is_vf(pci_dev)); /* VFs must use pcie_sriov_vf_register_bar */ assert(region_num >= 0); assert(region_num < PCI_NUM_REGIONS); assert(is_power_of_2(size)); @@ -1325,7 +1322,6 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num, assert(hdr_type != PCI_HEADER_TYPE_BRIDGE || region_num < 2); r = &pci_dev->io_regions[region_num]; - r->addr = PCI_BAR_UNMAPPED; r->size = size; r->type = type; r->memory = memory; @@ -1333,22 +1329,35 @@ void pci_register_bar(PCIDevice *pci_dev, int region_num, ? pci_get_bus(pci_dev)->address_space_io : pci_get_bus(pci_dev)->address_space_mem; - wmask = ~(size - 1); - if (region_num == PCI_ROM_SLOT) { - /* ROM enable bit is writable */ - wmask |= PCI_ROM_ADDRESS_ENABLE; - } - - addr = pci_bar(pci_dev, region_num); - pci_set_long(pci_dev->config + addr, type); + if (pci_is_vf(pci_dev)) { + PCIDevice *pf = pci_dev->exp.sriov_vf.pf; + assert(!pf || type == pf->exp.sriov_pf.vf_bar_type[region_num]); - if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) && - r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { - pci_set_quad(pci_dev->wmask + addr, wmask); - pci_set_quad(pci_dev->cmask + addr, ~0ULL); + r->addr = pci_bar_address(pci_dev, region_num, r->type, r->size); + if (r->addr != PCI_BAR_UNMAPPED) { + memory_region_add_subregion_overlap(r->address_space, + r->addr, r->memory, 1); + } } else { - pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff); - pci_set_long(pci_dev->cmask + addr, 0xffffffff); + r->addr = PCI_BAR_UNMAPPED; + + wmask = ~(size - 1); + if (region_num == PCI_ROM_SLOT) { + /* ROM enable bit is writable */ + wmask |= PCI_ROM_ADDRESS_ENABLE; + } + + addr = pci_bar(pci_dev, region_num); + pci_set_long(pci_dev->config + addr, type); + + if (!(r->type & PCI_BASE_ADDRESS_SPACE_IO) && + r->type & PCI_BASE_ADDRESS_MEM_TYPE_64) { + pci_set_quad(pci_dev->wmask + addr, wmask); + pci_set_quad(pci_dev->cmask + addr, ~0ULL); + } else { + pci_set_long(pci_dev->wmask + addr, wmask & 0xffffffff); + pci_set_long(pci_dev->cmask + addr, 0xffffffff); + } } } @@ -2109,6 +2118,11 @@ static void pci_qdev_realize(DeviceState *qdev, Error **errp) } } + if (!pcie_sriov_register_device(pci_dev, errp)) { + pci_qdev_unrealize(DEVICE(pci_dev)); + return; + } + /* * A PCIe Downstream Port that do not have ARI Forwarding enabled must * associate only Device 0 with the device attached to the bus diff --git a/hw/pci/pcie_sriov.c b/hw/pci/pcie_sriov.c index 3af0cc7d560a..183d6f17d606 100644 --- a/hw/pci/pcie_sriov.c +++ b/hw/pci/pcie_sriov.c @@ -20,6 +20,8 @@ #include "qapi/error.h" #include "trace.h" +static GHashTable *pfs; + static void unparent_vfs(PCIDevice *dev, uint16_t total_vfs) { for (uint16_t i = 0; i < total_vfs; i++) { @@ -31,14 +33,49 @@ static void unparent_vfs(PCIDevice *dev, uint16_t total_vfs) dev->exp.sriov_pf.vf = NULL; } -bool pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset, - const char *vfname, uint16_t vf_dev_id, - uint16_t init_vfs, uint16_t total_vfs, - uint16_t vf_offset, uint16_t vf_stride, - Error **errp) +static void clear_ctrl_vfe(PCIDevice *dev) +{ + uint8_t *ctrl = dev->config + dev->exp.sriov_cap + PCI_SRIOV_CTRL; + pci_set_word(ctrl, pci_get_word(ctrl) & ~PCI_SRIOV_CTRL_VFE); +} + +static void register_vfs(PCIDevice *dev) +{ + uint16_t num_vfs; + uint16_t i; + uint16_t sriov_cap = dev->exp.sriov_cap; + + assert(sriov_cap > 0); + num_vfs = pci_get_word(dev->config + sriov_cap + PCI_SRIOV_NUM_VF); + if (num_vfs > pci_get_word(dev->config + sriov_cap + PCI_SRIOV_TOTAL_VF)) { + clear_ctrl_vfe(dev); + return; + } + + trace_sriov_register_vfs(dev->name, PCI_SLOT(dev->devfn), + PCI_FUNC(dev->devfn), num_vfs); + for (i = 0; i < num_vfs; i++) { + pci_set_enabled(dev->exp.sriov_pf.vf[i], true); + } +} + +static void unregister_vfs(PCIDevice *dev) +{ + uint16_t i; + uint8_t *cfg = dev->config + dev->exp.sriov_cap; + + trace_sriov_unregister_vfs(dev->name, PCI_SLOT(dev->devfn), + PCI_FUNC(dev->devfn)); + for (i = 0; i < pci_get_word(cfg + PCI_SRIOV_TOTAL_VF); i++) { + pci_set_enabled(dev->exp.sriov_pf.vf[i], false); + } +} + +static bool pcie_sriov_pf_init_common(PCIDevice *dev, uint16_t offset, + uint16_t vf_dev_id, uint16_t init_vfs, + uint16_t total_vfs, uint16_t vf_offset, + uint16_t vf_stride, Error **errp) { - BusState *bus = qdev_get_parent_bus(&dev->qdev); - int32_t devfn = dev->devfn + vf_offset; uint8_t *cfg = dev->config + offset; uint8_t *wmask; @@ -100,6 +137,28 @@ bool pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset, qdev_prop_set_bit(&dev->qdev, "multifunction", true); + return true; +} + +bool pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset, + const char *vfname, uint16_t vf_dev_id, + uint16_t init_vfs, uint16_t total_vfs, + uint16_t vf_offset, uint16_t vf_stride, + Error **errp) +{ + BusState *bus = qdev_get_parent_bus(&dev->qdev); + int32_t devfn = dev->devfn + vf_offset; + + if (pfs && g_hash_table_contains(pfs, dev->qdev.id)) { + error_setg(errp, "attaching user-created SR-IOV VF unsupported"); + return false; + } + + if (!pcie_sriov_pf_init_common(dev, offset, vf_dev_id, init_vfs, + total_vfs, vf_offset, vf_stride, errp)) { + return false; + } + dev->exp.sriov_pf.vf = g_new(PCIDevice *, total_vfs); for (uint16_t i = 0; i < total_vfs; i++) { @@ -129,7 +188,22 @@ void pcie_sriov_pf_exit(PCIDevice *dev) { uint8_t *cfg = dev->config + dev->exp.sriov_cap; - unparent_vfs(dev, pci_get_word(cfg + PCI_SRIOV_TOTAL_VF)); + if (dev->exp.sriov_pf.vf_user_created) { + uint16_t ven_id = pci_get_word(dev->config + PCI_VENDOR_ID); + uint16_t total_vfs = pci_get_word(dev->config + PCI_SRIOV_TOTAL_VF); + uint16_t vf_dev_id = pci_get_word(dev->config + PCI_SRIOV_VF_DID); + + unregister_vfs(dev); + + for (uint16_t i = 0; i < total_vfs; i++) { + dev->exp.sriov_pf.vf[i]->exp.sriov_vf.pf = NULL; + + pci_config_set_vendor_id(dev->exp.sriov_pf.vf[i]->config, ven_id); + pci_config_set_device_id(dev->exp.sriov_pf.vf[i]->config, vf_dev_id); + } + } else { + unparent_vfs(dev, pci_get_word(cfg + PCI_SRIOV_TOTAL_VF)); + } } void pcie_sriov_pf_init_vf_bar(PCIDevice *dev, int region_num, @@ -162,74 +236,172 @@ void pcie_sriov_pf_init_vf_bar(PCIDevice *dev, int region_num, void pcie_sriov_vf_register_bar(PCIDevice *dev, int region_num, MemoryRegion *memory) { - PCIIORegion *r; - PCIBus *bus = pci_get_bus(dev); uint8_t type; - pcibus_t size = memory_region_size(memory); - assert(pci_is_vf(dev)); /* PFs must use pci_register_bar */ - assert(region_num >= 0); - assert(region_num < PCI_NUM_REGIONS); + assert(dev->exp.sriov_vf.pf); type = dev->exp.sriov_vf.pf->exp.sriov_pf.vf_bar_type[region_num]; - if (!is_power_of_2(size)) { - error_report("%s: PCI region size must be a power" - " of two - type=0x%x, size=0x%"FMT_PCIBUS, - __func__, type, size); - exit(1); - } - - r = &dev->io_regions[region_num]; - r->memory = memory; - r->address_space = - type & PCI_BASE_ADDRESS_SPACE_IO - ? bus->address_space_io - : bus->address_space_mem; - r->size = size; - r->type = type; - - r->addr = pci_bar_address(dev, region_num, r->type, r->size); - if (r->addr != PCI_BAR_UNMAPPED) { - memory_region_add_subregion_overlap(r->address_space, - r->addr, r->memory, 1); - } + return pci_register_bar(dev, region_num, type, memory); } -static void clear_ctrl_vfe(PCIDevice *dev) +static gint compare_vf_devfns(gconstpointer a, gconstpointer b) { - uint8_t *ctrl = dev->config + dev->exp.sriov_cap + PCI_SRIOV_CTRL; - pci_set_word(ctrl, pci_get_word(ctrl) & ~PCI_SRIOV_CTRL_VFE); + return (*(PCIDevice **)a)->devfn - (*(PCIDevice **)b)->devfn; } -static void register_vfs(PCIDevice *dev) +bool pcie_sriov_pf_init_from_user_created_vfs(PCIDevice *dev, uint16_t offset, + Error **errp) { - uint16_t num_vfs; + GPtrArray *pf; + PCIDevice **vfs; + BusState *bus = qdev_get_parent_bus(DEVICE(dev)); + uint16_t ven_id = pci_get_word(dev->config + PCI_VENDOR_ID); + uint16_t vf_dev_id; + uint16_t vf_offset; + uint16_t vf_stride; uint16_t i; - uint16_t sriov_cap = dev->exp.sriov_cap; - assert(sriov_cap > 0); - num_vfs = pci_get_word(dev->config + sriov_cap + PCI_SRIOV_NUM_VF); - if (num_vfs > pci_get_word(dev->config + sriov_cap + PCI_SRIOV_TOTAL_VF)) { - clear_ctrl_vfe(dev); - return; + if (!pfs || !dev->qdev.id) { + return false; } - trace_sriov_register_vfs(dev->name, PCI_SLOT(dev->devfn), - PCI_FUNC(dev->devfn), num_vfs); - for (i = 0; i < num_vfs; i++) { - pci_set_enabled(dev->exp.sriov_pf.vf[i], true); + pf = g_hash_table_lookup(pfs, dev->qdev.id); + if (!pf) { + return false; + } + + if (pf->len > UINT16_MAX) { + error_setg(errp, "too many VFs"); + return false; + } + + g_ptr_array_sort(pf, compare_vf_devfns); + vfs = (void *)pf->pdata; + + if (vfs[0]->devfn <= dev->devfn) { + error_setg(errp, "a VF function number is less than the PF function number"); + return false; } + + vf_dev_id = pci_get_word(vfs[0]->config + PCI_DEVICE_ID); + vf_offset = vfs[0]->devfn - dev->devfn; + vf_stride = pf->len < 2 ? 0 : vfs[1]->devfn - vfs[0]->devfn; + + for (i = 0; i < pf->len; i++) { + if (bus != qdev_get_parent_bus(&vfs[i]->qdev)) { + error_setg(errp, "SR-IOV VF parent bus mismatches with PF"); + return false; + } + + if (ven_id != pci_get_word(vfs[i]->config + PCI_VENDOR_ID)) { + error_setg(errp, "SR-IOV VF vendor ID mismatches with PF"); + return false; + } + + if (vf_dev_id != pci_get_word(vfs[i]->config + PCI_DEVICE_ID)) { + error_setg(errp, "inconsistent SR-IOV VF device IDs"); + return false; + } + + for (size_t j = 0; j < PCI_NUM_REGIONS; j++) { + if (vfs[i]->io_regions[j].size != vfs[0]->io_regions[j].size || + vfs[i]->io_regions[j].type != vfs[0]->io_regions[j].type) { + error_setg(errp, "inconsistent SR-IOV BARs"); + return false; + } + } + + if (vfs[i]->devfn - vfs[0]->devfn != vf_stride * i) { + error_setg(errp, "inconsistent SR-IOV stride"); + return false; + } + } + + if (!pcie_sriov_pf_init_common(dev, offset, vf_dev_id, pf->len, + pf->len, vf_offset, vf_stride, errp)) { + return false; + } + + for (i = 0; i < pf->len; i++) { + vfs[i]->exp.sriov_vf.pf = dev; + vfs[i]->exp.sriov_vf.vf_number = i; + + /* set vid/did according to sr/iov spec - they are not used */ + pci_config_set_vendor_id(vfs[i]->config, 0xffff); + pci_config_set_device_id(vfs[i]->config, 0xffff); + } + + dev->exp.sriov_pf.vf = vfs; + dev->exp.sriov_pf.vf_user_created = true; + + for (i = 0; i < PCI_NUM_REGIONS; i++) { + uint8_t type = vfs[0]->io_regions[i].type; + pcibus_t size = vfs[0]->io_regions[i].size; + + if (size) { + pcie_sriov_pf_init_vf_bar(dev, i, type, size); + } + } + + return true; } -static void unregister_vfs(PCIDevice *dev) +bool pcie_sriov_register_device(PCIDevice *dev, Error **errp) { - uint16_t i; - uint8_t *cfg = dev->config + dev->exp.sriov_cap; + if (!dev->exp.sriov_pf.vf && dev->qdev.id && + pfs && g_hash_table_contains(pfs, dev->qdev.id)) { + error_setg(errp, "attaching user-created SR-IOV VF unsupported"); + return false; + } - trace_sriov_unregister_vfs(dev->name, PCI_SLOT(dev->devfn), - PCI_FUNC(dev->devfn)); - for (i = 0; i < pci_get_word(cfg + PCI_SRIOV_TOTAL_VF); i++) { - pci_set_enabled(dev->exp.sriov_pf.vf[i], false); + if (dev->sriov_pf) { + PCIDevice *pci_pf; + GPtrArray *pf; + + if (!PCI_DEVICE_GET_CLASS(dev)->sriov_vf_user_creatable) { + error_setg(errp, "user cannot create SR-IOV VF with this device type"); + return false; + } + + if (!pci_is_express(dev)) { + error_setg(errp, "PCI Express is required for SR-IOV VF"); + return false; + } + + if (!pci_qdev_find_device(dev->sriov_pf, &pci_pf)) { + error_setg(errp, "PCI device specified as SR-IOV PF already exists"); + return false; + } + + if (!pfs) { + pfs = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, NULL); + } + + pf = g_hash_table_lookup(pfs, dev->sriov_pf); + if (!pf) { + pf = g_ptr_array_new(); + g_hash_table_insert(pfs, g_strdup(dev->sriov_pf), pf); + } + + g_ptr_array_add(pf, dev); + } + + return true; +} + +void pcie_sriov_unregister_device(PCIDevice *dev) +{ + if (dev->sriov_pf && pfs) { + GPtrArray *pf = g_hash_table_lookup(pfs, dev->qdev.id); + + if (pf) { + g_ptr_array_remove_fast(pf, dev); + + if (!pf->len) { + g_hash_table_remove(pfs, dev->qdev.id); + g_ptr_array_free(pf, FALSE); + } + } } } @@ -316,7 +488,7 @@ void pcie_sriov_pf_add_sup_pgsize(PCIDevice *dev, uint16_t opt_sup_pgsize) uint16_t pcie_sriov_vf_number(PCIDevice *dev) { - assert(pci_is_vf(dev)); + assert(dev->exp.sriov_vf.pf); return dev->exp.sriov_vf.vf_number; } From patchwork Sun Apr 28 09:05:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13645929 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 07111C4345F for ; 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Sun, 28 Apr 2024 02:06:27 -0700 (PDT) Received: from localhost ([157.82.202.162]) by smtp.gmail.com with UTF8SMTPSA id bf6-20020a170902b90600b001e86e5dcb81sm18096416plb.283.2024.04.28.02.06.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 28 Apr 2024 02:06:27 -0700 (PDT) From: Akihiko Odaki Date: Sun, 28 Apr 2024 18:05:46 +0900 Subject: [PATCH RFC v4 6/7] virtio-pci: Implement SR-IOV PF MIME-Version: 1.0 Message-Id: <20240428-sriov-v4-6-ac8ac6212982@daynix.com> References: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> In-Reply-To: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> To: "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jason Wang , Sriram Yagnaraman , Keith Busch , Klaus Jensen Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Yui Washizu , Akihiko Odaki X-Mailer: b4 0.14-dev-a718f Received-SPF: none client-ip=2607:f8b0:4864:20::62c; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x62c.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Allow user to attach SR-IOV VF to a virtio-pci PF. Signed-off-by: Akihiko Odaki --- hw/virtio/virtio-pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index eaaf86402cfa..996bb2cbad20 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -2245,6 +2245,12 @@ static void virtio_pci_device_plugged(DeviceState *d, Error **errp) pci_register_bar(&proxy->pci_dev, proxy->legacy_io_bar_idx, PCI_BASE_ADDRESS_SPACE_IO, &proxy->bar); } + + if (pcie_sriov_pf_init_from_user_created_vfs(&proxy->pci_dev, + PCI_CONFIG_SPACE_SIZE, + errp)) { + virtio_add_feature(&vdev->host_features, VIRTIO_F_SR_IOV); + } } static void virtio_pci_device_unplugged(DeviceState *d) @@ -2253,6 +2259,7 @@ static void virtio_pci_device_unplugged(DeviceState *d) bool modern = virtio_pci_modern(proxy); bool modern_pio = proxy->flags & VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY; + pcie_sriov_pf_exit(&proxy->pci_dev); virtio_pci_stop_ioeventfd(proxy); if (modern) { From patchwork Sun Apr 28 09:05:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akihiko Odaki X-Patchwork-Id: 13645928 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 2E608C4345F for ; Sun, 28 Apr 2024 09:07:54 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s10UZ-0007jP-44; Sun, 28 Apr 2024 05:06:39 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s10UW-0007i2-Sy for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:36 -0400 Received: from mail-pf1-x429.google.com ([2607:f8b0:4864:20::429]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s10UU-0003xt-7V for qemu-devel@nongnu.org; Sun, 28 Apr 2024 05:06:36 -0400 Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-6ed01c63657so3438395b3a.2 for ; Sun, 28 Apr 2024 02:06:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20230601.gappssmtp.com; s=20230601; t=1714295192; x=1714899992; darn=nongnu.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=agEvzBa4RHbrJsI2JBzinS8CmNut8NaPKnAYNO+Q2DM=; b=jpgz4nN65R37bbTD8IrdFiuetISPfEEWCdveRoUV+FkDqDgcykw6ZRql68NdGTrOWn DpCPGpEGSSVMry+51g86Jaa9dPyj585l0bNl+2U6x5S5bVn3Q1AlXBc2Anapco2VT+ZD YaJCFtEmQduQf3lYT1ESAYMJwhTkvQJn9soGCc6Oe9VulZAKJRK44eRPF11CV+6FeAMd OVmtQqUew16kaRN8ExYMhfCi2GyqroocRJg7rbxqV8jLULP5NrzXqfysSlGvR6B/ZZ4k FS5ze7MLKLmlo3TL6LaFvcArrvnOYyYhcYF6FlWzsL2eG0XDJwrytdRv3PGAsvaYK7hD Wg5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714295192; x=1714899992; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=agEvzBa4RHbrJsI2JBzinS8CmNut8NaPKnAYNO+Q2DM=; b=LB0UaVVnz/uTi/VPB8vC6kClHrlEMnKz4gzEPOsVx7djudn3TfWbwPurh19HGHWd6j lSRx+/eEcADJj0IJEcKJb173bDVmCkA13f1wlmxiC8zouXeCRpQBLA3UrawdKbitK31K 2n05tANE1mxqqoQ2pjPPz2VpPEjZv+qIeyaFT6MpKYhyoHd6rNEnUY7fOL6XYRMLEDHe v+rA2TSy60wUhjz7iXPyVr8Nu2/X7hxMjPmmMy7tHzLyoUkF1CFTX4/CGIl4QmV+rdJq BVl+V/3vEIdXgIGNwiV9dCFsqrhkITY8I3BjcCtlJiAVSaiUOZJRgTxTUgwGVm2mMB83 tX8A== X-Gm-Message-State: AOJu0Yz5+SS9g5TAAomOxDxVO3OnqwiefOnHnVU2oyz6rkVnCKqpiD17 mrSWp7ArPaj1kTr0TIaQlwEI+8gMyGK9BDXgyBX4sDS/9zKHBO+qchfXQb6au9c= X-Google-Smtp-Source: AGHT+IGbTbWS711n0c6sAoeBV+trTnvp8SbIWmZ63HmTOa4PtBTSzTi8mYezMIVy2+mVJArKa8YrqA== X-Received: by 2002:a05:6a00:39a1:b0:6ec:db05:36cd with SMTP id fi33-20020a056a0039a100b006ecdb0536cdmr5316627pfb.9.1714295192494; Sun, 28 Apr 2024 02:06:32 -0700 (PDT) Received: from localhost ([157.82.202.162]) by smtp.gmail.com with UTF8SMTPSA id v28-20020a63481c000000b005f7536fbebfsm16765604pga.11.2024.04.28.02.06.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 28 Apr 2024 02:06:32 -0700 (PDT) From: Akihiko Odaki Date: Sun, 28 Apr 2024 18:05:47 +0900 Subject: [PATCH RFC v4 7/7] virtio-net: Implement SR-IOV VF MIME-Version: 1.0 Message-Id: <20240428-sriov-v4-7-ac8ac6212982@daynix.com> References: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> In-Reply-To: <20240428-sriov-v4-0-ac8ac6212982@daynix.com> To: "Michael S. Tsirkin" , Marcel Apfelbaum , Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_Goa?= =?utf-8?q?ter?= , Paolo Bonzini , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eduardo Habkost , Jason Wang , Sriram Yagnaraman , Keith Busch , Klaus Jensen Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org, Yui Washizu , Akihiko Odaki X-Mailer: b4 0.14-dev-a718f Received-SPF: none client-ip=2607:f8b0:4864:20::429; envelope-from=akihiko.odaki@daynix.com; helo=mail-pf1-x429.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org A virtio-net device can be added as a SR-IOV VF to another virtio-pci device that will be the PF. Signed-off-by: Akihiko Odaki --- hw/virtio/virtio-net-pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/virtio/virtio-net-pci.c b/hw/virtio/virtio-net-pci.c index e03543a70a75..dba4987d6e04 100644 --- a/hw/virtio/virtio-net-pci.c +++ b/hw/virtio/virtio-net-pci.c @@ -75,6 +75,7 @@ static void virtio_net_pci_class_init(ObjectClass *klass, void *data) k->device_id = PCI_DEVICE_ID_VIRTIO_NET; k->revision = VIRTIO_PCI_ABI_VERSION; k->class_id = PCI_CLASS_NETWORK_ETHERNET; + k->sriov_vf_user_creatable = true; set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); device_class_set_props(dc, virtio_net_properties); vpciklass->realize = virtio_net_pci_realize;