From patchwork Thu Mar 4 21:38:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hector Martin X-Patchwork-Id: 394089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-21.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6C7FC433E6 for ; Thu, 4 Mar 2021 21:43:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C9AE64FF4 for ; Thu, 4 Mar 2021 21:43:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240723AbhCDVm3 (ORCPT ); Thu, 4 Mar 2021 16:42:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240423AbhCDVl6 (ORCPT ); Thu, 4 Mar 2021 16:41:58 -0500 Received: from mail.marcansoft.com (marcansoft.com [IPv6:2a01:298:fe:f::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E5504C061760; Thu, 4 Mar 2021 13:41:17 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: hector@marcansoft.com) by mail.marcansoft.com (Postfix) with ESMTPSA id 155F0426ED; Thu, 4 Mar 2021 21:40:52 +0000 (UTC) From: Hector Martin To: linux-arm-kernel@lists.infradead.org Cc: Hector Martin , Marc Zyngier , Rob Herring , Arnd Bergmann , Olof Johansson , Krzysztof Kozlowski , Mark Kettenis , Tony Lindgren , Mohamed Mediouni , Stan Skowronek , Alexander Graf , Will Deacon , Linus Walleij , Mark Rutland , Andy Shevchenko , Greg Kroah-Hartman , Jonathan Corbet , Catalin Marinas , Christoph Hellwig , "David S. Miller" , devicetree@vger.kernel.org, linux-serial@vger.kernel.org, linux-doc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFT PATCH v3 13/27] arm64: Add Apple vendor-specific system registers Date: Fri, 5 Mar 2021 06:38:48 +0900 Message-Id: <20210304213902.83903-14-marcan@marcan.st> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210304213902.83903-1-marcan@marcan.st> References: <20210304213902.83903-1-marcan@marcan.st> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org Apple ARM64 SoCs have a ton of vendor-specific registers we're going to have to deal with, and those don't really belong in sysreg.h with all the architectural registers. Make a new home for them, and add some registers which are useful for early bring-up. Signed-off-by: Hector Martin --- MAINTAINERS | 1 + arch/arm64/include/asm/sysreg_apple.h | 69 +++++++++++++++++++++++++++ 2 files changed, 70 insertions(+) create mode 100644 arch/arm64/include/asm/sysreg_apple.h diff --git a/MAINTAINERS b/MAINTAINERS index aec14fbd61b8..3a352c687d4b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1646,6 +1646,7 @@ B: https://github.com/AsahiLinux/linux/issues C: irc://chat.freenode.net/asahi-dev T: git https://github.com/AsahiLinux/linux.git F: Documentation/devicetree/bindings/arm/apple.yaml +F: arch/arm64/include/asm/sysreg_apple.h ARM/ARTPEC MACHINE SUPPORT M: Jesper Nilsson diff --git a/arch/arm64/include/asm/sysreg_apple.h b/arch/arm64/include/asm/sysreg_apple.h new file mode 100644 index 000000000000..48347a51d564 --- /dev/null +++ b/arch/arm64/include/asm/sysreg_apple.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Apple SoC vendor-defined system register definitions + * + * Copyright The Asahi Linux Contributors + + * This file contains only well-understood registers that are useful to + * Linux. If you are looking for things to add here, you should visit: + * + * https://github.com/AsahiLinux/docs/wiki/HW:ARM-System-Registers + */ + +#ifndef __ASM_SYSREG_APPLE_H +#define __ASM_SYSREG_APPLE_H + +#include +#include +#include + +/* + * Keep these registers in encoding order, except for register arrays; + * those should be listed in array order starting from the position of + * the encoding of the first register. + */ + +#define SYS_APL_PMCR0_EL1 sys_reg(3, 1, 15, 0, 0) +#define PMCR0_IMODE GENMASK(10, 8) +#define PMCR0_IMODE_OFF 0 +#define PMCR0_IMODE_PMI 1 +#define PMCR0_IMODE_AIC 2 +#define PMCR0_IMODE_HALT 3 +#define PMCR0_IMODE_FIQ 4 +#define PMCR0_IACT BIT(11) + +/* IPI request registers */ +#define SYS_APL_IPI_RR_LOCAL_EL1 sys_reg(3, 5, 15, 0, 0) +#define SYS_APL_IPI_RR_GLOBAL_EL1 sys_reg(3, 5, 15, 0, 1) +#define IPI_RR_CPU GENMASK(7, 0) +/* Cluster only used for the GLOBAL register */ +#define IPI_RR_CLUSTER GENMASK(23, 16) +#define IPI_RR_TYPE GENMASK(29, 28) +#define IPI_RR_IMMEDIATE 0 +#define IPI_RR_RETRACT 1 +#define IPI_RR_DEFERRED 2 +#define IPI_RR_NOWAKE 3 + +/* IPI status register */ +#define SYS_APL_IPI_SR_EL1 sys_reg(3, 5, 15, 1, 1) +#define IPI_SR_PENDING BIT(0) + +/* Guest timer FIQ enable register */ +#define SYS_APL_VM_TMR_FIQ_ENA_EL1 sys_reg(3, 5, 15, 1, 3) +#define VM_TMR_FIQ_ENABLE_V BIT(0) +#define VM_TMR_FIQ_ENABLE_P BIT(1) + +/* Deferred IPI countdown register */ +#define SYS_APL_IPI_CR_EL1 sys_reg(3, 5, 15, 3, 1) + +#define SYS_APL_UPMCR0_EL1 sys_reg(3, 7, 15, 0, 4) +#define UPMCR0_IMODE GENMASK(18, 16) +#define UPMCR0_IMODE_OFF 0 +#define UPMCR0_IMODE_AIC 2 +#define UPMCR0_IMODE_HALT 3 +#define UPMCR0_IMODE_FIQ 4 + +#define SYS_APL_UPMSR_EL1 sys_reg(3, 7, 15, 6, 4) +#define UPMSR_IACT BIT(0) + +#endif /* __ASM_SYSREG_APPLE_H */