From nobody Mon Feb 9 08:59:31 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1643816687; cv=none; d=zohomail.com; s=zohoarc; b=e2rcjCSVcLolsF78HR5n8KGyuxOUuhbj4qrO8wTqvN/I6E8y00Xsen6PO1zH0BuWs8Xfj834lHnZequjgzf8NpByjiV83ex40veGdbpFyXuioE/kz1xbGfHpoLwiJo2Lx/cVd/zplvr5n3B+tepmKVS6qfNhJ716czYOCeA3jz4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1643816687; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=SP3bxiqL+TVNYphbCiDvvV8rEtRDzzPQLKVxxUmPiUg=; b=SesK35TvpF0ucPAHiN6jhLdLtSeVtufWAxZjJmIaiXebMFqf3rD5r1vJQxm1OTFB94VSasVBA814mepZjNSvFtiYKgzIRqMQ9sNAw53KAoOmreJEckWbA7zkO+Tm3zxwQW5JIkAWVXN0su5GPvDNllOk4FFUJ6LWZPg1AattmOk= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1643816687822735.0044165854675; Wed, 2 Feb 2022 07:44:47 -0800 (PST) Received: from localhost ([::1]:50644 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nFHoM-00047i-MW for importer@patchew.org; Wed, 02 Feb 2022 10:44:46 -0500 Received: from eggs.gnu.org ([209.51.188.92]:58926) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nFGaA-0006DU-1g for qemu-devel@nongnu.org; Wed, 02 Feb 2022 09:26:03 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]:2258) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nFGa7-0001u7-Rq for qemu-devel@nongnu.org; Wed, 02 Feb 2022 09:26:01 -0500 Received: from fraeml711-chm.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4JpkX16G20z67Cqn; Wed, 2 Feb 2022 22:22:09 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml711-chm.china.huawei.com (10.206.15.60) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Wed, 2 Feb 2022 15:25:57 +0100 Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) 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 15.1.2308.21; Wed, 2 Feb 2022 14:25:56 +0000 To: , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Marcel Apfelbaum , "Michael S . Tsirkin" , Igor Mammedov CC: , Ben Widawsky , "Peter Maydell" , , "Shameerali Kolothum Thodi" , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Saransh Gupta1 , Shreyas Shah , Chris Browy , Samarth Saxena , "Dan Williams" Subject: [PATCH v5 30/43] acpi/cxl: Introduce CFMWS structures in CEDT Date: Wed, 2 Feb 2022 14:10:24 +0000 Message-ID: <20220202141037.17352-31-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220202141037.17352-1-Jonathan.Cameron@huawei.com> References: <20220202141037.17352-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhreml743-chm.china.huawei.com (10.201.108.193) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Reply-to: Jonathan Cameron From: Jonathan Cameron via X-ZM-MESSAGEID: 1643816689907100001 Content-Type: text/plain; charset="utf-8" From: Ben Widawsky The CEDT CXL Fixed Window Memory Window Structures (CFMWs) define regions of the host phyiscal address map which (via an impdef means) are configured such that they have a particular interleave setup across one or more CXL Host Bridges. Reported-by: Alison Schofield Signed-off-by: Ben Widawsky Signed-off-by: Jonathan Cameron --- hw/acpi/cxl.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/hw/acpi/cxl.c b/hw/acpi/cxl.c index 442f836a3e..50efc7f690 100644 --- a/hw/acpi/cxl.c +++ b/hw/acpi/cxl.c @@ -60,6 +60,64 @@ static void cedt_build_chbs(GArray *table_data, PXBDev *= cxl) build_append_int_noprefix(table_data, memory_region_size(mr), 8); } =20 +/* + * CFMWS entries in CXL 2.0 ECN: CEDT CFMWS & QTG _DSM. + * Interleave ways encoding in CXL 2.0 ECN: 3, 6, 12 and 16-way memory + * interleaving. + */ +static void cedt_build_cfmws(GArray *table_data, MachineState *ms) +{ + CXLState *cxls =3D ms->cxl_devices_state; + GList *it; + + for (it =3D cxls->fixed_windows; it; it =3D it->next) { + CXLFixedWindow *fw =3D it->data; + int i; + + /* Type */ + build_append_int_noprefix(table_data, 1, 1); + + /* Reserved */ + build_append_int_noprefix(table_data, 0, 1); + + /* Record Length */ + build_append_int_noprefix(table_data, 36 + 4 * fw->num_targets, 2); + + /* Reserved */ + build_append_int_noprefix(table_data, 0, 4); + + /* Base HPA */ + build_append_int_noprefix(table_data, fw->mr.addr, 8); + + /* Window Size */ + build_append_int_noprefix(table_data, fw->size, 8); + + /* Host Bridge Interleave Ways */ + build_append_int_noprefix(table_data, fw->enc_int_ways, 1); + + /* Host Bridge Interleave Arithmetic */ + build_append_int_noprefix(table_data, 0, 1); + + /* Reserved */ + build_append_int_noprefix(table_data, 0, 2); + + /* Host Bridge Interleave Granularity */ + build_append_int_noprefix(table_data, fw->enc_int_gran, 4); + + /* Window Restrictions */ + build_append_int_noprefix(table_data, 0x0f, 2); /* No restrictions= */ + + /* QTG ID */ + build_append_int_noprefix(table_data, 0, 2); + + /* Host Bridge List (list of UIDs - currently bus_nr) */ + for (i =3D 0; i < fw->num_targets; i++) { + g_assert(fw->target_hbs[i]); + build_append_int_noprefix(table_data, fw->target_hbs[i]->bus_n= r, 4); + } + } +} + static int cxl_foreach_pxb_hb(Object *obj, void *opaque) { Aml *cedt =3D opaque; @@ -86,6 +144,7 @@ void cxl_build_cedt(MachineState *ms, GArray *table_offs= ets, GArray *table_data, /* reserve space for CEDT header */ =20 object_child_foreach_recursive(object_get_root(), cxl_foreach_pxb_hb, = cedt); + cedt_build_cfmws(cedt->buf, ms); =20 /* copy AML table into ACPI tables blob and patch header there */ g_array_append_vals(table_data, cedt->buf->data, cedt->buf->len); --=20 2.32.0