From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qk1-f175.google.com (mail-qk1-f175.google.com [209.85.222.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 03FD17F7C1 for ; Mon, 25 Mar 2024 14:20:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711376443; cv=none; b=QSrcQhMJvnbUsXenmRfpbEOgR2zWH6NohpJj+SOCR7Dmf43ZmQRBdxgY2fFyJ9uLWgFq7Mb9iiW7Ixus9hsyOAQvAEQhkD5O1tB3UUaXDu0RwQSjFQhHOHkEcVmcU5QvqX6sLwrx9Z00fpUKEB8fru+Ull9UMP2zsiY0RZwoYn0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711376443; c=relaxed/simple; bh=63TCN/grSYA1rWAH+qH7a+lfvhQsFmLttF5pjeCdXLk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VW3hfbdaIRAjycQlUADPT7YClohD5QJ0WD8W0mtw+/920Ldz/VPGdq3BrHah4HwQik+/1oA/gqHKyZnBKly5sOl/aDQ3yMccDzm8x87B3ql3VzogWbKtRDp/Ohtjz/E893SyQzLsBVX9WAR10MnvuQayXJAFIP+L/EUQh9A+Oc0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ziepe.ca; spf=pass smtp.mailfrom=ziepe.ca; dkim=pass (2048-bit key) header.d=ziepe.ca header.i=@ziepe.ca header.b=niS8Okqv; arc=none smtp.client-ip=209.85.222.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ziepe.ca Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ziepe.ca Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ziepe.ca header.i=@ziepe.ca header.b="niS8Okqv" Received: by mail-qk1-f175.google.com with SMTP id af79cd13be357-78a3bccc420so209021285a.1 for ; Mon, 25 Mar 2024 07:20:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; t=1711376441; x=1711981241; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=o4khMi8YsL4x6qQRj8U1+7HQEKktCZ8TqyaiPDmkbrE=; b=niS8OkqvREAy5sfkqblXb7DquNydE4CioXOa7hGbfZQF1yxQ4qltJ+ByyKehTHMvPC 8efjoZk/dQ3NrIbSJM6+TNMXxQiE2IcgKLuFwckAwk9eoJ/7X1cfVHwbCVcXy4C4RH1k Fd6kETk7w19wS0Mlv+PdT2qSsWyZGfoMUyeS1baiVjVIKgMDf7cgU/Fkgf8MNlhzTPc4 Y8CgLv1oxcXBw/olWk0d480abcrQZtVx7XA0TDZMTJx4DZYEkpSX7Bjps46UlaCwRk3Y VXQ6sLZKy9kPdBIEAR/YITwBDpgqTOUUmVOYKfPqjxSuzwvaguOPCaOuKMDzMJZYBjrP YbAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711376441; x=1711981241; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=o4khMi8YsL4x6qQRj8U1+7HQEKktCZ8TqyaiPDmkbrE=; b=uZqMwcVLuEJDR2d6f9zbcZLYEUAQxIHmx4LjYP3p50X43cd4gx4JQ+xnqyxYnGoSji tbiK/p2L3TIPSFg0umONu6oieNN+mdW53a/YAGLGdQ88aMMj7X3UJjKHSSKNSMC5wU+P cpJHf+Wx463S5QC7b2oAal3KSqI6adJGl4JNE6tw2NRYcGKQWmX9R1T2fOpy2bZdDdEt XY+IJ7Cc7OObIANbC7+SRgFa5Ljg0rL3HwNmwI8LzvlrCM0nnsht20loCnFva13rojVs cFHXoN2ORacR91D5I784eOkn0H+4tUk75c1TVrE3OhD+YM24NX8gK+Q9WJwnRaNJEkrE xYMA== X-Forwarded-Encrypted: i=1; AJvYcCVxzRfwqMRCVyCCDcRlFMtcfjn/U9CWRpdQ67plk/FfX45P6kTmvov9fh0ud/1hzFeyjvkZ9YHaDG2L1XrzQYngQef+Z9otKQYtIsnk X-Gm-Message-State: AOJu0YyKy2Udj87gyP6bIg7ZFOIfIK1httAWCzJd1wwZhDLng2r8D0ZU FaId6l2FKw+oBZC8PkABwI+Gt6s4cd8puhK9MTsQKzR3LTN6Z4RcnWu450VQqFY= X-Google-Smtp-Source: AGHT+IEIDvH4aJX0QxV4yhRacQicWFP/ioH96fdSaZc4HTl73ipKGoKLrbARimpUoqXo7Z7Mj3Cjjg== X-Received: by 2002:ae9:e64a:0:b0:789:e917:ac8d with SMTP id x10-20020ae9e64a000000b00789e917ac8dmr12632qkl.71.1711376440895; Mon, 25 Mar 2024 07:20:40 -0700 (PDT) Received: from ziepe.ca (hlfxns017vw-142-68-80-239.dhcp-dynamic.fibreop.ns.bellaliant.net. [142.68.80.239]) by smtp.gmail.com with ESMTPSA id ou8-20020a05620a620800b007882e204d45sm2170804qkn.37.2024.03.25.07.20.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Mar 2024 07:20:40 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1rokgy-000ME6-0a; Mon, 25 Mar 2024 10:48:48 -0300 Date: Mon, 25 Mar 2024 10:48:48 -0300 From: Jason Gunthorpe To: "Peng Fan (OSS)" Cc: Will Deacon , Robin Murphy , Joerg Roedel , Thomas Gleixner , Marc Zyngier , Bixuan Cui , linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Peng Fan Subject: Re: [PATCH 3/3] iommu/arm-smmu-v3: support suspend/resume Message-ID: <20240325134848.GA8419@ziepe.ca> References: <20240324-smmu-v3-v1-0-11bc96e156a5@nxp.com> <20240324-smmu-v3-v1-3-11bc96e156a5@nxp.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240324-smmu-v3-v1-3-11bc96e156a5@nxp.com> On Sun, Mar 24, 2024 at 08:29:00PM +0800, Peng Fan (OSS) wrote: > +static void arm_smmu_resume_unique_irqs(struct arm_smmu_device *smmu) > +{ > + struct device *dev = smmu->dev; > + struct msi_desc *desc; > + struct msi_msg msg; > + > + if (!dev->msi.domain) > + return; > + > + desc = irq_get_msi_desc(smmu->evtq.q.irq); > + if (desc) { > + get_cached_msi_msg(smmu->evtq.q.irq, &msg); > + arm_smmu_write_msi_msg(desc, &msg); > + } > + > + desc = irq_get_msi_desc(smmu->gerr_irq); > + if (desc) { > + get_cached_msi_msg(smmu->gerr_irq, &msg); > + arm_smmu_write_msi_msg(desc, &msg); > + } > + > + if (smmu->features & ARM_SMMU_FEAT_PRI) { > + desc = irq_get_msi_desc(smmu->priq.q.irq); > + if (desc) { > + get_cached_msi_msg(smmu->priq.q.irq, &msg); > + arm_smmu_write_msi_msg(desc, &msg); > + } > + } > +} I wonder if this should be done instead by converting the driver away from platform MSI to the new MSI mechanism? Jason