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 64BCC6015 for ; Wed, 20 Jul 2022 16:12:03 +0000 (UTC) Received: from fraeml708-chm.china.huawei.com (unknown [172.18.147.207]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Lp0xG1Mq5z67btf; Thu, 21 Jul 2022 00:08:34 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml708-chm.china.huawei.com (10.206.15.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Wed, 20 Jul 2022 18:12:00 +0200 Received: from localhost (10.81.205.121) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Wed, 20 Jul 2022 17:11:59 +0100 Date: Wed, 20 Jul 2022 17:11:58 +0100 From: Jonathan Cameron To: Dan Williams CC: , Ben Widawsky , , , Subject: Re: [PATCH v2 05/28] cxl/core: Define a 'struct cxl_endpoint_decoder' Message-ID: <20220720171158.00003af5@Huawei.com> In-Reply-To: <165784327088.1758207.15502834501671201192.stgit@dwillia2-xfh.jf.intel.com> References: <165784324066.1758207.15025479284039479071.stgit@dwillia2-xfh.jf.intel.com> <165784327088.1758207.15502834501671201192.stgit@dwillia2-xfh.jf.intel.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.29; i686-w64-mingw32) Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.81.205.121] X-ClientProxiedBy: lhreml754-chm.china.huawei.com (10.201.108.204) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected On Thu, 14 Jul 2022 17:01:10 -0700 Dan Williams wrote: > Previously the target routing specifics of switch decoders and platform > CXL window resource tracking of root decoders were factored out of > 'struct cxl_decoder'. While switch decoders translate from SPA to > downstream ports, endpoint decoders translate from SPA to DPA. > > This patch, 3 of 3, adds a 'struct cxl_endpoint_decoder' that tracks an > endpoint-specific Device Physical Address (DPA) resource. For now this > just defines ->dpa_res, a follow-on patch will handle requesting DPA > resource ranges from a device-DPA resource tree. > > Co-developed-by: Ben Widawsky > Signed-off-by: Ben Widawsky > Signed-off-by: Dan Williams Reviewed-by: Jonathan Cameron