From patchwork Thu Oct 27 17:56:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 619250 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5DAF4ECAAA1 for ; Thu, 27 Oct 2022 17:59:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235851AbiJ0R7X (ORCPT ); Thu, 27 Oct 2022 13:59:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235922AbiJ0R7K (ORCPT ); Thu, 27 Oct 2022 13:59:10 -0400 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 846801781C4; Thu, 27 Oct 2022 10:59:08 -0700 (PDT) Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.0.0) id a65cd5e508336162; Thu, 27 Oct 2022 19:59:06 +0200 Received: from kreacher.localnet (unknown [213.134.169.45]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 9A07266D838; Thu, 27 Oct 2022 19:59:05 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Bob Moore Subject: [PATCH 09/11] ACPICA: Add CXL 3.0 structures (CXIMS & RDPAS) to the CEDT table Date: Thu, 27 Oct 2022 19:56:50 +0200 Message-ID: <1934788.usQuhbGJ8B@kreacher> In-Reply-To: <4756726.GXAFRqVoOG@kreacher> References: <4756726.GXAFRqVoOG@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.169.45 X-CLIENT-HOSTNAME: 213.134.169.45 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvgedrtdeggdduudejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnheptdehhfelgeevgeeifeevtddtffefieelffekveeltefftdegveekleevleefueevnecuffhomhgrihhnpegtohhmphhuthgvvgigphhrvghsshhlihhnkhdrohhrghdpghhithhhuhgsrdgtohhmnecukfhppedvudefrddufeegrdduieelrdegheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvudefrddufeegrdduieelrdeghedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohepfedprhgtphhtthhopehlihhnuhigqdgrtghpihesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehrohgsvghrthdrmhhoohhrvgesihhnthgv lhdrtghomh X-DCC--Metrics: v370.home.net.pl 1024; Body=3 Fuz1=3 Fuz2=3 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Alison Schofield ACPICA commit 2d8dc0383d3c908389053afbdc329bbd52f009ce The CXL 3.0 Specification [1] adds two new structures to the CXL Early Discovery Table (CEDT). The CEDT may include zero or more entries of these types: CXIMS: CXL XOR Interleave Math Structure Enables the host to find a targets position in an Interleave Target List when XOR Math is used. RDPAS: RCEC Downstream Post Association Structure Enables the host to locate the Downstream Port(s) that report errors to a given Root Complex Event Collector (RCEC). Link: https://www.computeexpresslink.org/spec-landing # [1] Link: https://github.com/acpica/acpica/commit/2d8dc038 Signed-off-by: Alison Schofield Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki --- include/acpi/actbl1.h | 35 ++++++++++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) Index: linux-pm/include/acpi/actbl1.h =================================================================== --- linux-pm.orig/include/acpi/actbl1.h +++ linux-pm/include/acpi/actbl1.h @@ -329,7 +329,9 @@ struct acpi_cedt_header { enum acpi_cedt_type { ACPI_CEDT_TYPE_CHBS = 0, ACPI_CEDT_TYPE_CFMWS = 1, - ACPI_CEDT_TYPE_RESERVED = 2, + ACPI_CEDT_TYPE_CXIMS = 2, + ACPI_CEDT_TYPE_RDPAS = 3, + ACPI_CEDT_TYPE_RESERVED = 4, }; /* Values for version field above */ @@ -380,6 +382,7 @@ struct acpi_cedt_cfmws_target_element { /* Values for Interleave Arithmetic field above */ #define ACPI_CEDT_CFMWS_ARITHMETIC_MODULO (0) +#define ACPI_CEDT_CFMWS_ARITHMETIC_XOR (1) /* Values for Restrictions field above */ @@ -389,6 +392,36 @@ struct acpi_cedt_cfmws_target_element { #define ACPI_CEDT_CFMWS_RESTRICT_PMEM (1<<3) #define ACPI_CEDT_CFMWS_RESTRICT_FIXED (1<<4) +/* 2: CXL XOR Interleave Math Structure */ + +struct acpi_cedt_cxims { + struct acpi_cedt_header header; + u16 reserved1; + u8 hbig; + u8 nr_xormaps; + u64 xormap_list[]; +}; + +/* 3: CXL RCEC Downstream Port Association Structure */ + +struct acpi_cedt_rdpas { + struct acpi_cedt_header header; + u8 reserved1; + u16 length; + u16 segment; + u16 bdf; + u8 protocol; + u64 address; +}; + +/* Masks for bdf field above */ +#define ACPI_CEDT_RDPAS_BUS_MASK 0xff00 +#define ACPI_CEDT_RDPAS_DEVICE_MASK 0x00f8 +#define ACPI_CEDT_RDPAS_FUNCTION_MASK 0x0007 + +#define ACPI_CEDT_RDPAS_PROTOCOL_IO (0) +#define ACPI_CEDT_RDPAS_PROTOCOL_CACHEMEM (1) + /******************************************************************************* * * CPEP - Corrected Platform Error Polling table (ACPI 4.0)