From patchwork Mon Apr 14 22:47:13 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Kisel X-Patchwork-Id: 881021 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id B0E811FECC3; Mon, 14 Apr 2025 22:47:19 +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=1744670841; cv=none; b=VItHUBNuy0IAZ3rx/ydHjnZBCOLvmtW2JZmKQThUScyvtCdpNEjLBIqdsoiskAZIqBr30MajmffVYFwR5FxsYf+Jv+VfBNpZachnHNo9/E96+1DiK+HQie5wprubhLFmjluve/ygEuIKOCNjSeiYXoCMynMI58hZdC2gB18P/BM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744670841; c=relaxed/simple; bh=kNfVG+yZpaLRq1OoCyzPL29BMRStZnd75S1TRZZzGyA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NU6syHYwHHw1/WfQVOR6Jhj6djRIYKmLYfZWRdJ/+IXbokhvb5a6NarwKNU5EonAklLTp/Gu9FNdGMBVKGjCgoW/nmHzqKpw2yVpVX+IHVJlfT2TyKmGlhdubPf7aH8MTAII1ib4sGpdNI2hytcfJYBdv9B6+evrqKFYW1YNpSA= 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=lPVutIap; 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="lPVutIap" Received: from romank-3650.corp.microsoft.com (unknown [131.107.159.188]) by linux.microsoft.com (Postfix) with ESMTPSA id 1B1BE210C436; Mon, 14 Apr 2025 15:47:19 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 1B1BE210C436 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1744670839; bh=SIS7Ml4VZ/wIhHt29L18904r+oPLJIB7CTsSxudVE84=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lPVutIaptWTHrT7cgcH+ye3PQBmYeR9GPO7Dkc0r17twjSXXl4N0TL32uYTZtmSJw MSoR+caetSn8mKX3MNIVfyN65CfKmfBY8REgRnSubcXDMD/vNMoPeqm5nfs2U4sGo3 WBuza01bqCW0gRUcgOYszPirGJpdsitB48PEP3d4= From: Roman Kisel To: arnd@arndb.de, bhelgaas@google.com, bp@alien8.de, catalin.marinas@arm.com, conor+dt@kernel.org, dan.carpenter@linaro.org, dave.hansen@linux.intel.com, decui@microsoft.com, haiyangz@microsoft.com, hpa@zytor.com, joey.gouly@arm.com, krzk+dt@kernel.org, kw@linux.com, kys@microsoft.com, lenb@kernel.org, lpieralisi@kernel.org, manivannan.sadhasivam@linaro.org, mark.rutland@arm.com, maz@kernel.org, mingo@redhat.com, oliver.upton@linux.dev, rafael@kernel.org, robh@kernel.org, rafael.j.wysocki@intel.com, ssengar@linux.microsoft.com, sudeep.holla@arm.com, suzuki.poulose@arm.com, tglx@linutronix.de, wei.liu@kernel.org, will@kernel.org, yuzenghui@huawei.com, devicetree@vger.kernel.org, kvmarm@lists.linux.dev, linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org Cc: apais@microsoft.com, benhill@microsoft.com, bperkins@microsoft.com, sunilmut@microsoft.com Subject: [PATCH hyperv-next v8 11/11] PCI: hv: Get vPCI MSI IRQ domain from DeviceTree Date: Mon, 14 Apr 2025 15:47:13 -0700 Message-ID: <20250414224713.1866095-12-romank@linux.microsoft.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250414224713.1866095-1-romank@linux.microsoft.com> References: <20250414224713.1866095-1-romank@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The hyperv-pci driver uses ACPI for MSI IRQ domain configuration on arm64. It won't be able to do that in the VTL mode where only DeviceTree can be used. Update the hyperv-pci driver to get vPCI MSI IRQ domain in the DeviceTree case, too. Signed-off-by: Roman Kisel Acked-by: Bjorn Helgaas --- drivers/pci/controller/pci-hyperv.c | 72 ++++++++++++++++++++++++++--- 1 file changed, 66 insertions(+), 6 deletions(-) diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index 6084b38bdda1..2d7de07bbf38 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -50,6 +50,7 @@ #include #include #include +#include #include /* @@ -817,9 +818,17 @@ static int hv_pci_vec_irq_gic_domain_alloc(struct irq_domain *domain, int ret; fwspec.fwnode = domain->parent->fwnode; - fwspec.param_count = 2; - fwspec.param[0] = hwirq; - fwspec.param[1] = IRQ_TYPE_EDGE_RISING; + if (is_of_node(fwspec.fwnode)) { + /* SPI lines for OF translations start at offset 32 */ + fwspec.param_count = 3; + fwspec.param[0] = 0; + fwspec.param[1] = hwirq - 32; + fwspec.param[2] = IRQ_TYPE_EDGE_RISING; + } else { + fwspec.param_count = 2; + fwspec.param[0] = hwirq; + fwspec.param[1] = IRQ_TYPE_EDGE_RISING; + } ret = irq_domain_alloc_irqs_parent(domain, virq, 1, &fwspec); if (ret) @@ -887,10 +896,46 @@ static const struct irq_domain_ops hv_pci_domain_ops = { .activate = hv_pci_vec_irq_domain_activate, }; +#ifdef CONFIG_OF + +static struct irq_domain *hv_pci_of_irq_domain_parent(void) +{ + struct device_node *parent; + struct irq_domain *domain; + + parent = of_irq_find_parent(hv_get_vmbus_root_device()->of_node); + if (!parent) + return NULL; + domain = irq_find_host(parent); + of_node_put(parent); + + return domain; +} + +#endif + +#ifdef CONFIG_ACPI + +static struct irq_domain *hv_pci_acpi_irq_domain_parent(void) +{ + acpi_gsi_domain_disp_fn gsi_domain_disp_fn; + + if (acpi_irq_model != ACPI_IRQ_MODEL_GIC) + return NULL; + gsi_domain_disp_fn = acpi_get_gsi_dispatcher(); + if (!gsi_domain_disp_fn) + return NULL; + return irq_find_matching_fwnode(gsi_domain_disp_fn(0), + DOMAIN_BUS_ANY); +} + +#endif + static int hv_pci_irqchip_init(void) { static struct hv_pci_chip_data *chip_data; struct fwnode_handle *fn = NULL; + struct irq_domain *irq_domain_parent = NULL; int ret = -ENOMEM; chip_data = kzalloc(sizeof(*chip_data), GFP_KERNEL); @@ -907,9 +952,24 @@ static int hv_pci_irqchip_init(void) * way to ensure that all the corresponding devices are also gone and * no interrupts will be generated. */ - hv_msi_gic_irq_domain = acpi_irq_create_hierarchy(0, HV_PCI_MSI_SPI_NR, - fn, &hv_pci_domain_ops, - chip_data); +#ifdef CONFIG_ACPI + if (!acpi_disabled) + irq_domain_parent = hv_pci_acpi_irq_domain_parent(); +#endif +#ifdef CONFIG_OF + if (!irq_domain_parent) + irq_domain_parent = hv_pci_of_irq_domain_parent(); +#endif + if (!irq_domain_parent) { + WARN_ONCE(1, "Invalid firmware configuration for VMBus interrupts\n"); + ret = -EINVAL; + goto free_chip; + } + + hv_msi_gic_irq_domain = irq_domain_create_hierarchy(irq_domain_parent, 0, + HV_PCI_MSI_SPI_NR, + fn, &hv_pci_domain_ops, + chip_data); if (!hv_msi_gic_irq_domain) { pr_err("Failed to create Hyper-V arm64 vPCI MSI IRQ domain\n");