From nobody Wed Sep 3 02:21:44 2025 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=1649086439; cv=none; d=zohomail.com; s=zohoarc; b=g2ksyTtc0PvW1e+SnmBLrYbBPtM+ak/fSWN3M70nKP6DS5OtmZlgQ1/eQB7DNlHp8FxwD6m5WVutI0W9/1q2ilF4MCYJI6S4xlsoKUXJ3dAZEH36vn7pkNz8HBJFOgLKSZx+309HuYeN9dXS+fvkE9iE/7RzfWyD4avyO8AkSZg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1649086439; 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=ACtdEcex/xb63YYmZ2if3kh8cVwznKmjCWkapxpZnzg=; b=dZdoCvh07ie68vMR/Ubd5pwgzU2bHNSbTJxUhyryvgGAeLwngJ3POtv8WLmiY+uaM86qLUdYjyGBbBP0HDLHC5SIq0IBrJX6bZuUtwbUmKqHHHvp/k2w4Mg17zp55hoqBgdIlxXhBYDf7gNx8XWCIFgQNfOvfgBDwXCIAKKNVu4= 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 1649086439238215.94087245150308; Mon, 4 Apr 2022 08:33:59 -0700 (PDT) Received: from localhost ([::1]:55748 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nbOiM-0002RF-7l for importer@patchew.org; Mon, 04 Apr 2022 11:33:58 -0400 Received: from eggs.gnu.org ([209.51.188.92]:40346) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nbOda-0000tD-GT for qemu-devel@nongnu.org; Mon, 04 Apr 2022 11:29:02 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]:2495) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nbOdY-00065I-NJ for qemu-devel@nongnu.org; Mon, 04 Apr 2022 11:29:02 -0400 Received: from fraeml737-chm.china.huawei.com (unknown [172.18.147.206]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4KXF4f4gd7z67Xcd; Mon, 4 Apr 2022 23:26:58 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml737-chm.china.huawei.com (10.206.15.218) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 4 Apr 2022 17:28:58 +0200 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 15.1.2375.24; Mon, 4 Apr 2022 16:28:57 +0100 To: , , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Marcel Apfelbaum , "Michael S . Tsirkin" , Igor Mammedov , Markus Armbruster , "Mark Cave-Ayland" , Adam Manzanares CC: , Ben Widawsky , "Peter Maydell" , Shameerali Kolothum Thodi , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Peter Xu , David Hildenbrand , Paolo Bonzini , Saransh Gupta1 , Shreyas Shah , Chris Browy , "Samarth Saxena" , Dan Williams , "k . jensen @ samsung . com" , Tong Zhang , , Alison Schofield Subject: [PATCH v9 28/45] acpi/cxl: Introduce CFMWS structures in CEDT Date: Mon, 4 Apr 2022 16:14:28 +0100 Message-ID: <20220404151445.10955-29-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220404151445.10955-1-Jonathan.Cameron@huawei.com> References: <20220404151445.10955-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhreml717-chm.china.huawei.com (10.201.108.68) 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: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, 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: 1649086440203100001 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 Reviewed-by: Alex Benn=C3=A9e --- hw/acpi/cxl.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/hw/acpi/cxl.c b/hw/acpi/cxl.c index aa4af86a4c..31d5235136 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