From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C04A7297A55; Tue, 15 Apr 2025 13:27:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744723675; cv=none; b=O+hkm/uoupPpBChHs/pzOpNRyPv+iZZ7CGjcYGI/kJdiutCqazA5BTrBb33dU8I6cUvwNd8z4j4/1rx5x0+8tRZq+Tx3a+OHcE5cQ/dkXA6rQKfupY1VifBlFcSxcqv1p0xrrDb+mgnusP+Ssrbt/cm2WgWyjecEn9TiaKXQBhM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744723675; c=relaxed/simple; bh=5vIWnpx34IrIwlMaWnfTMqgc0h9UiEmWCwYdJOSdYx4=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=U2m7Valhl+pu+qqX2xsy0tGIQ9dtvDMrxS1VeQV+b0rlIKepK465AWx3Z2yKFH41G/gIS5YNaWHHk8E0IibwdJ+rnC1gy/TewrZHdL565SbpdlxAMW6r6hJVmiE1doIApXAnHuaLmHxNycz8B+KLTyKuKgZdh7UrHsnDrHOa9z0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4ZcPxR72hcz6K9YH; Tue, 15 Apr 2025 21:23:39 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id 6D3EB1402C3; Tue, 15 Apr 2025 21:27:51 +0800 (CST) Received: from localhost (10.203.177.66) by frapeml500008.china.huawei.com (7.182.85.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 15 Apr 2025 15:27:50 +0200 Date: Tue, 15 Apr 2025 14:27:49 +0100 From: Jonathan Cameron To: CC: , , , , , , , , , Alejandro Lucero , Ben Cheatham Subject: Re: [PATCH v13 07/22] cxl: support dpa initialization without a mailbox Message-ID: <20250415142749.00002b4e@huawei.com> In-Reply-To: <20250414151336.3852990-8-alejandro.lucero-palau@amd.com> References: <20250414151336.3852990-1-alejandro.lucero-palau@amd.com> <20250414151336.3852990-8-alejandro.lucero-palau@amd.com> X-Mailer: Claws Mail 4.3.0 (GTK 3.24.42; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: lhrpeml100012.china.huawei.com (7.191.174.184) To frapeml500008.china.huawei.com (7.182.85.71) On Mon, 14 Apr 2025 16:13:21 +0100 alejandro.lucero-palau@amd.com wrote: > From: Alejandro Lucero > > Type3 relies on mailbox CXL_MBOX_OP_IDENTIFY command for initializing > memdev state params which end up being used for DMA initialization. > > Allow a Type2 driver to initialize DPA simply by giving the size of its > volatile and/or non-volatile hardware partitions. > > Export cxl_dpa_setup as well for initializing those added DPA partitions > with the proper resources. > > Signed-off-by: Alejandro Lucero > Reviewed-by: Ben Cheatham Reviewed-by: Jonathan Cameron