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 9C3F61E527; Wed, 15 May 2024 17:05:46 +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=1715792748; cv=none; b=QUU9eGi8leHGtrGKGVKWT+ezZ+49BUuZkW87j7QGbjAEGimUtRp/XY5KEtm3UgLUPcPZXr4lfpKln27bQbu7emlzw0Pta4iNXrjduIUsBxInPCdc1c+Ly2ZU5xf4tvibWe8ki0fpYuH9rRCwrwwUP5/qMq1bppn7jttFIZCI/cM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715792748; c=relaxed/simple; bh=3BlrPdBzC3mvUBHtdt+9Ypaev6RoOfs6grz397lU5AQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=R95yupwfbx57zbiFRCvaqfso2wAuOGxW7cGE+mGeIACphIf+iXdTH7CPiEn2QTFjHl/Y5c2jCbv8dSh7WZmykSPk7XLwb5rY6QYREeOVAa4dtZKKqvktDByTH7Fxz5aDHlgFm74n/hW7aTyy+7IJsWOh7m0EV1wgx3gJ5jl1QLg= 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=bjkvGcg4; 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="bjkvGcg4" Received: from [10.137.186.190] (unknown [131.107.159.62]) by linux.microsoft.com (Postfix) with ESMTPSA id DFF51201F184; Wed, 15 May 2024 10:05:45 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com DFF51201F184 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1715792746; bh=TlROrZJe+54XR+nvO256Bn9+fCavCEN5dSYWG30Zb5g=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=bjkvGcg4Dak5GjfAg8VmS3mo9TsSsECYXySK9CG/mcqNDyHPDEayGhva/E18FNZnz ad1bkNn3q1zntR8WcaZUfc0ZCinJGcZoW5FeAOhiI2NOcYvsBXuOqJCkywr6zT7E9A vdBbyEJbUS1MMWaj6iDhNpUaEpIPNg+lQ5m25td0= Message-ID: <9c0dcd26-891e-4ed2-be93-dad6cd65b41e@linux.microsoft.com> Date: Wed, 15 May 2024 10:05:45 -0700 Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 5/6] drivers/hv/vmbus: Get the irq number from DeviceTree To: Krzysztof Kozlowski , arnd@arndb.de, bhelgaas@google.com, bp@alien8.de, catalin.marinas@arm.com, dave.hansen@linux.intel.com, decui@microsoft.com, haiyangz@microsoft.com, hpa@zytor.com, kw@linux.com, kys@microsoft.com, lenb@kernel.org, lpieralisi@kernel.org, mingo@redhat.com, mhklinux@outlook.com, rafael@kernel.org, robh@kernel.org, tglx@linutronix.de, wei.liu@kernel.org, will@kernel.org, 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: ssengar@microsoft.com, sunilmut@microsoft.com, vdso@hexbites.dev References: <20240514224508.212318-1-romank@linux.microsoft.com> <20240514224508.212318-6-romank@linux.microsoft.com> Content-Language: en-US From: Roman Kisel In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 5/15/2024 12:47 AM, Krzysztof Kozlowski wrote: > On 15/05/2024 00:43, Roman Kisel wrote: >> The vmbus driver uses ACPI for interrupt assignment on >> arm64 hence it won't function in the VTL mode where only >> DeviceTree can be used. >> >> Update the vmbus driver to discover interrupt configuration >> via DeviceTree. >> >> Signed-off-by: Roman Kisel >> --- >> drivers/hv/vmbus_drv.c | 37 +++++++++++++++++++++++++++++++++++++ >> 1 file changed, 37 insertions(+) >> >> diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c >> index e25223cee3ab..52f01bd1c947 100644 >> --- a/drivers/hv/vmbus_drv.c >> +++ b/drivers/hv/vmbus_drv.c >> @@ -36,6 +36,7 @@ >> #include >> #include >> #include >> +#include >> #include >> #include >> #include "hyperv_vmbus.h" >> @@ -2316,6 +2317,34 @@ static int vmbus_acpi_add(struct platform_device *pdev) >> } >> #endif >> >> +static int __maybe_unused vmbus_of_set_irq(struct device_node *np) >> +{ >> + struct irq_desc *desc; >> + int irq; >> + >> + irq = of_irq_get(np, 0); > > Where is the binding for this? > Have not added to Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml, my bad. Will update the file. >> + if (irq == 0) { >> + pr_err("VMBus interrupt mapping failure\n"); >> + return -EINVAL; >> + } >> + if (irq < 0) { >> + pr_err("VMBus interrupt data can't be read from DeviceTree, error %d\n", irq); >> + return irq; >> + } >> + >> + desc = irq_to_desc(irq); >> + if (!desc) { >> + pr_err("VMBus interrupt description can't be found for virq %d\n", irq); >> + return -ENODEV; >> + } >> + >> + vmbus_irq = irq; >> + vmbus_interrupt = desc->irq_data.hwirq; >> + pr_debug("VMBus virq %d, hwirq %d\n", vmbus_irq, vmbus_interrupt); >> + >> + return 0; >> +} >> + >> static int vmbus_device_add(struct platform_device *pdev) >> { >> struct resource **cur_res = &hyperv_mmio; >> @@ -2324,12 +2353,20 @@ static int vmbus_device_add(struct platform_device *pdev) >> struct device_node *np = pdev->dev.of_node; >> int ret; >> >> + pr_debug("VMBus is present in DeviceTree\n"); > > Not related and not really helpful. Simple entry/exit tracking is > provided already by tracing. > True. Will remove. > > Best regards, > Krzysztof -- Thank you, Roman