From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 9DD8A33342C; Fri, 8 May 2026 22:04:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778277872; cv=none; b=jADq8I0FJCJkUBH+moKFjI0FqZ2UDG1Rmi0m+4WqhCFlffD0T+Ob2LDIcmxdwpeSnWE4AnXZjmBE7+J+EHP8SD4hy8xwXeUMfD7oplMdqJ5CO23YBECRjVUjMoh4/RHSTEdy4VsS4LPHOQtEx+dY3PVoXQJ7jPHD0BFOF3Wiel0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778277872; c=relaxed/simple; bh=sVxh7KZEWfqvP0gD45P4kR5hPU+/5A7LrdRH+d7OyNU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=CVm/Hy4HcI4qsxJz9kwJgw5RiSMZHMZf40vM+0lAtmCCBkiilNj9nL/FxqDhLoMBkA6/eSvNaHXRNLy64xDnxCjGipIxTNx6VWC4lpmNPzRp5dHZj3do27a6Wvx/7Dkbx4DJAdGejdlTSmTh4wnNTqBn4zEdn/CHIUvhDnDleM8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=JzLPJfVf; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="JzLPJfVf" Received: by linux.microsoft.com (Postfix, from userid 1006) id 1327020B7166; Fri, 8 May 2026 15:04:30 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 1327020B7166 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1778277870; bh=GUfY60yumu3zuHpreYxIjGZCb6P35LC9IeB0Uemy/2A=; h=From:To:Cc:Subject:Date:From; b=JzLPJfVflxJA7ipuxf2JNvCbJLurRH9WoGScaDYxFMBLOc/UixJ57F4mOvBcXPTHG JdY9XclifvXj/UUQWuvuLCWtAErgI6o3vCneycCWmChuuqvVsG7Kaf+kKXTvIcBdZL jbWNNmp8qihwpYjXomnRTujqXAE5eYd8hF8sGEOA= From: Haiyang Zhang To: linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Bjorn Helgaas , Simon Horman , Shradha Gupta , Dipayaan Roy , Erni Sri Satya Vennela , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Cc: paulros@microsoft.com Subject: [PATCH net-next] net: mana: Add handler for sriov configure Date: Fri, 8 May 2026 15:04:06 -0700 Message-ID: <20260508220412.15138-1-haiyangz@linux.microsoft.com> X-Mailer: git-send-email 2.43.7 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Haiyang Zhang Add callback function for the pci_driver, sriov_configure. Also disable VF autoprobe when it runs as PF driver on bare metal, since the hardware side may not have the VF ready immediately. Export pci_vf_drivers_autoprobe() so the driver can toggle the VF autoprobe flag. Signed-off-by: Haiyang Zhang --- .../net/ethernet/microsoft/mana/gdma_main.c | 20 +++++++++++++++++++ drivers/pci/iov.c | 1 + 2 files changed, 21 insertions(+) diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c index 3bc3fff55999..767f11d5b351 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c @@ -2094,6 +2094,11 @@ static int mana_gd_probe(struct pci_dev *pdev, const struct pci_device_id *ent) gc->numa_node = dev_to_node(&pdev->dev); gc->is_pf = mana_is_pf(pdev->device); + + /* Disable VF autoprobe on BM */ + if (gc->is_pf) + pci_vf_drivers_autoprobe(pdev, false); + gc->bar0_va = bar0_va; gc->dev = &pdev->dev; xa_init(&gc->irq_contexts); @@ -2262,6 +2267,20 @@ static void mana_gd_shutdown(struct pci_dev *pdev) pci_disable_device(pdev); } +static int mana_sriov_configure(struct pci_dev *pdev, int numvfs) +{ + int err = 0; + + dev_info(&pdev->dev, "Requested num VFs: %d\n", numvfs); + + if (numvfs > 0) + err = pci_enable_sriov(pdev, numvfs); + else + pci_disable_sriov(pdev); + + return err ? err : numvfs; +} + static const struct pci_device_id mana_id_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_MICROSOFT, MANA_PF_DEVICE_ID) }, { PCI_DEVICE(PCI_VENDOR_ID_MICROSOFT, MANA_VF_DEVICE_ID) }, @@ -2276,6 +2295,7 @@ static struct pci_driver mana_driver = { .suspend = mana_gd_suspend, .resume = mana_gd_resume, .shutdown = mana_gd_shutdown, + .sriov_configure = mana_sriov_configure, }; static int __init mana_driver_init(void) diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 91ac4e37ecb9..5a701f44b8fd 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -1127,6 +1127,7 @@ void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool auto_probe) if (dev->is_physfn) dev->sriov->drivers_autoprobe = auto_probe; } +EXPORT_SYMBOL_GPL(pci_vf_drivers_autoprobe); /** * pci_iov_bus_range - find bus range used by Virtual Function -- 2.34.1