From patchwork Wed Oct 9 22:44:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Inochi Amaoto X-Patchwork-Id: 13829337 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1F1F6CED639 for ; Wed, 9 Oct 2024 22:46:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=rKEhxffuAnZEPiPAO/BPm9UnA3whEb8Z3xIzhTbRsOs=; b=Ck7yOSyLREqenf vN656ihNfqHB6E/dBXqupImoawAO1+TV/fOdk028E7UrV1myk5FvxMO7N5XWF+/D8AGaDw9piyiKD u93ReYE5+WfYSuoqFPXGD6E0HQzZlsfhYAP69fHjbxV169FV4E11DS5xM5DALxWv9pDkb6SnNqmwh 2le7IP3ZVmaKD5m6oEEYTdVmr5e58SxABseJYeRXx2G/krxvmIyFiBKcf05LZMc2iEXDl9hmIX4GI bJKArMokgL4nVJ51E9hTN/sLaOz4m/Lm5KnHWTwJYfRrwquP15fGt60TUs4hQQaNqVdVWeIz3Skc6 OCj2MtBrhFxECZdQPhyA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1syfS9-0000000Axuo-30WI; Wed, 09 Oct 2024 22:46:45 +0000 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1syfQ6-0000000AxIK-0MMv for linux-riscv@lists.infradead.org; Wed, 09 Oct 2024 22:44:39 +0000 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-20c767a9c50so2038115ad.1 for ; Wed, 09 Oct 2024 15:44:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728513877; x=1729118677; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=xm4CsYMN2YsRkev2KFCV0kWlKGRxeTSpqxFYXStuCkY=; b=Li0F08/MpPc16vstzEj1IYg4lB/2CmLdjyQfDGPF9jjqWLRoS3QNsl1PewdrRChCsf 0wcsznDHBsV7BGOOVdM3LamW5jVH/X/LnEy141pHcXHBDyNrzYOsMIiCckoTdW0gP4xh pkt+oATirMhbbgmEMrY6BsAUCw4RDG+zOMovEg+O/ByzsD7lzeKh9HqIZsTRwxJRmPoa aZb3U51eN70xusdrlUi7NTjudQrBeGh3nshuGlspnlyXV1hQvbFPsg++6cMoquj3gIBM 0Pnoqk4yNw11v95lwzu0iJOt5fQippxkul++gK2L8MZeCwp2vakeuFsScjWuUHmbKPLU WVMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728513877; x=1729118677; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=xm4CsYMN2YsRkev2KFCV0kWlKGRxeTSpqxFYXStuCkY=; b=cCc1laKEp5VpvFT2FgK+vK9t+uNcb9JcfytBEg9hOqt1Fp+0CnZO7bF/Vc2E8B/boF ozrwBcgjyYWr2FsrVmSfHcASxfSJhu0pKvviRdRGogk7aszQezGJKo5kBFnMTIzpN+H9 Hh+ehLYQr4D2BNp/3aXeVh3VYcqIz9Ztgt5YX1lvp+bG8u634f11lc10Ww9vqzsXogyj FQrAJe84cynKg4fRmD++f5Rh2/B9+X3M2S5YQh870jgGLABsWFGfNfsa6lTjUqfqIbD2 SXjLeq8tyuumhlYmRxtHsso1rrMDQR1zREE4Pnn1NnvW4pYEG3JCbje1hNgeD8ABxvjx I+nw== X-Forwarded-Encrypted: i=1; AJvYcCVNvnnctS9jy95OTJtW4CT/YM2nME87aXReimPQS+Fk3kSpg4DskcOE1nXyxGwq6nPvc6K2cDkYnq+/RA==@lists.infradead.org X-Gm-Message-State: AOJu0YxizWDqeFaqC/jmDVl/XIB4QuTXxnqZNZJbx4U9bWFbIzl4kp4Z oleC6VqNgFat3EeEvvKqLX/yPP8qYnSgTBWGc/UDD4L3TC6Brvv8 X-Google-Smtp-Source: AGHT+IEKuoY00MBONYoYEZvNUwHwFgGZe++kurc8BivmtPoW128dTz3seqWpdUhyU5wFto11gZmpkA== X-Received: by 2002:a17:903:189:b0:20b:b0c1:712b with SMTP id d9443c01a7336-20c63726b02mr69101965ad.15.1728513877101; Wed, 09 Oct 2024 15:44:37 -0700 (PDT) Received: from localhost ([2001:da8:7001:11::cb]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20c1393107asm75591135ad.156.2024.10.09.15.44.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Oct 2024 15:44:36 -0700 (PDT) From: Inochi Amaoto To: Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Peter Zijlstra , Chen Wang , Inochi Amaoto , Guo Ren , Lad Prabhakar , Heikki Krogerus , Yangyu Chen , Jinyu Tang , Hal Feng , Geert Uytterhoeven Cc: Yixun Lan , Inochi Amaoto , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 1/3] dt-bindings: interrupt-controller: Add Sophgo SG2044 ACLINT SSWI Date: Thu, 10 Oct 2024 06:44:07 +0800 Message-ID: <20241009224410.53188-2-inochiama@gmail.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241009224410.53188-1-inochiama@gmail.com> References: <20241009224410.53188-1-inochiama@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241009_154438_150146_96C37F50 X-CRM114-Status: GOOD ( 15.00 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Sophgo SG2044 has a new version of T-HEAD C920, which implement a fully featured ACLINT device. This ACLINT has an extra SSWI field to support fast S-mode IPI. Add necessary compatible string for the T-HEAD ACLINT sswi device. Signed-off-by: Inochi Amaoto Reviewed-by: Conor Dooley --- .../thead,c900-aclint-sswi.yaml | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/thead,c900-aclint-sswi.yaml diff --git a/Documentation/devicetree/bindings/interrupt-controller/thead,c900-aclint-sswi.yaml b/Documentation/devicetree/bindings/interrupt-controller/thead,c900-aclint-sswi.yaml new file mode 100644 index 000000000000..0106fbf3ea1f --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/thead,c900-aclint-sswi.yaml @@ -0,0 +1,58 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/thead,c900-aclint-sswi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sophgo sg2044 ACLINT Supervisor-level Software Interrupt Device + +maintainers: + - Inochi Amaoto + +description: + The SSWI device is a part of the riscv ACLINT device. It provides + supervisor-level IPI functionality for a set of HARTs on a RISC-V + platform. It provides a register to set an IPI (SETSSIP) for each + HART connected to the SSWI device. + +properties: + compatible: + items: + - enum: + - sophgo,sg2044-aclint-sswi + - const: thead,c900-aclint-sswi + + reg: + maxItems: 1 + + "#interrupt-cells": + const: 0 + + interrupt-controller: true + + interrupts-extended: + minItems: 1 + maxItems: 4095 + +additionalProperties: false + +required: + - compatible + - reg + - "#interrupt-cells" + - interrupt-controller + - interrupts-extended + +examples: + - | + interrupt-controller@94000000 { + compatible = "sophgo,sg2044-aclint-sswi", "thead,c900-aclint-sswi"; + reg = <0x94000000 0x00004000>; + #interrupt-cells = <0>; + interrupt-controller; + interrupts-extended = <&cpu1intc 1>, + <&cpu2intc 1>, + <&cpu3intc 1>, + <&cpu4intc 1>; + }; +... From patchwork Wed Oct 9 22:44:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Inochi Amaoto X-Patchwork-Id: 13829339 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D3CDACED628 for ; Wed, 9 Oct 2024 22:46:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1+j9gAWYyP2epMFItX9vkPp1VL27TI18qi7f6CDJ4GI=; b=ppMbxVtYA92T3G zRjLRLbLFlxL6rEszAAtmF/7mxpjjCTsxTg7cHxZ4EUZW5iC1XutlAGXtR1SZnlyx+7aJQsLi8E/D Iiy0tw+3/eWsSDtN6GDI3jqrugVsDPkX+aa74AfMH0N6AAdX4s3GwPSUjuV116LQ37ToH1lUfBkZv xLX4mD5haaTr580e19ZR2aVkNbtCjoaUWU8v1EhmYqI2wIwvIxl7d7Dot2pVUhK56/spLLmBYTXx6 JvBrMd/QN5w55ZPFNYnYXI5YfSqDHRTGAcSj8WwENW5jGkWc37ll/CuikhYlX6eFylwJDfsjWG+jt tOLc7XRqUNDCeGWHDlIA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1syfSA-0000000AxvQ-1WLi; Wed, 09 Oct 2024 22:46:46 +0000 Received: from mail-pf1-x42f.google.com ([2607:f8b0:4864:20::42f]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1syfQ8-0000000AxJ4-42Gq for linux-riscv@lists.infradead.org; Wed, 09 Oct 2024 22:44:42 +0000 Received: by mail-pf1-x42f.google.com with SMTP id d2e1a72fcca58-71e038f3835so328131b3a.0 for ; Wed, 09 Oct 2024 15:44:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728513880; x=1729118680; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=DQiYNef7ArPYQlhe07XyLMGs/XiAOe7Z31NtUB9uYxQ=; b=OOhPsNoCYeKzyjVdC4we2pTzggMHQslH0f+DwgF49rt8aTFASVIbmp2eLn8YJuMTHK qw8VK1aAOrxXDX4+Vux2/IiXrm0GgSDQ3h85f/Y2esVy9au3uMmKCQdhyARGfdnec0d6 kjWL3ckGXGIo8jSDFhZ/iiqXo49hVFJoGVkvbRjfZSTkQoA6aWrzFCNWSzQDPoIkxiOR VnA6iRSApH17cP5nSLY/WEoQDE9lKlWwqy427FzrVhMuGzxFkjVq3msAapBN/SBxWrcs DSuuceGQsJz2hx9gyVkp+Z0wUK42E4p7Y5xp7faeUCk+AIEWXLlfc0VheZLF6HGzj8za Vxgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728513880; x=1729118680; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=DQiYNef7ArPYQlhe07XyLMGs/XiAOe7Z31NtUB9uYxQ=; b=V0sc7mxXXJM1w/54xL/Wehz27aY1+zjprPKYPAEAfT9tiKYvQMZZK/YiaVqAEpcjiv j9dj+lUvH3q41G23D3bjYY8dq/mwc/mVKnRlV6+z8gTz8Nv7spV1PBlWnxf9LmZiM4/d T+fXPemvsKMK1FO4Bdx6s4P1RJFapOb1L1gfNhwvbIRl12541q72d3TLGA32LpGkTyAe cxTvi67arPgDnXGqxAw1yk2joah1MajmEWuth+WQrBOeJSQuIwmIIhhG1rTB/b5vkpr/ XFAV8GsxIgq9fodLQXWwx/lXbooop/WIoNGXbItf4GuMQ5QE55CbN5NK1QRt681/q/JQ zk+Q== X-Forwarded-Encrypted: i=1; AJvYcCWQudxyxluL4Pr/b0UKDAJxXnmoVk8ij0bYveEA8dk/18Pnhk6CMxDP1LsBJepDWNS1/4ZNsvZ4yzBGuA==@lists.infradead.org X-Gm-Message-State: AOJu0YyPEitHQsiZCz+RQX7Bi5BfmqvdVEA0KccRLObMldywZ2N1Z8gn OMzqFWQQrxQAlbPWmTn+y48iJijckNvP1ZX/lILjioROOsGOE7b5 X-Google-Smtp-Source: AGHT+IFxTbeLG1Jh9xQz1Jop82g/peuBRGEbOM2+MGKlD7JAInvly69FNZ6RedmRdxOnx1QAzgGC5A== X-Received: by 2002:a05:6a21:1706:b0:1d8:ae07:c02 with SMTP id adf61e73a8af0-1d8ae070e7cmr1797936637.47.1728513879652; Wed, 09 Oct 2024 15:44:39 -0700 (PDT) Received: from localhost ([2001:da8:7001:11::cb]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-7e9f680a681sm8792461a12.14.2024.10.09.15.44.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Oct 2024 15:44:39 -0700 (PDT) From: Inochi Amaoto To: Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Peter Zijlstra , Chen Wang , Inochi Amaoto , Guo Ren , Lad Prabhakar , Heikki Krogerus , Yangyu Chen , Jinyu Tang , Hal Feng , Geert Uytterhoeven Cc: Yixun Lan , Inochi Amaoto , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 2/3] irqchip: add T-HEAD C900 ACLINT SSWI driver Date: Thu, 10 Oct 2024 06:44:08 +0800 Message-ID: <20241009224410.53188-3-inochiama@gmail.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241009224410.53188-1-inochiama@gmail.com> References: <20241009224410.53188-1-inochiama@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241009_154441_036255_9612B495 X-CRM114-Status: GOOD ( 22.88 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Add a driver for the T-HEAD C900 ACLINT SSWI device, which is an enhanced implementation of the RISC-V ACLINT SSWI specification. This device allows the system to send ipi via fast device interface. Signed-off-by: Inochi Amaoto --- drivers/irqchip/Kconfig | 10 ++ drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-thead-c900-aclint-sswi.c | 166 +++++++++++++++++++ include/linux/cpuhotplug.h | 1 + 4 files changed, 178 insertions(+) create mode 100644 drivers/irqchip/irq-thead-c900-aclint-sswi.c diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 341cd9ca5a05..32671385cbb7 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -611,6 +611,16 @@ config STARFIVE_JH8100_INTC If you don't know what to do here, say Y. +config THEAD_C900_ACLINT_SSWI + bool "THEAD C9XX ACLINT S-mode IPI Interrupt Controller" + depends on RISCV + select IRQ_DOMAIN_HIERARCHY + help + This enables support for T-HEAD specific ACLINT SSWI device + support. + + If you don't know what to do here, say Y. + config EXYNOS_IRQ_COMBINER bool "Samsung Exynos IRQ combiner support" if COMPILE_TEST depends on (ARCH_EXYNOS && ARM) || COMPILE_TEST diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index e3679ec2b9f7..583418261253 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -101,6 +101,7 @@ obj-$(CONFIG_RISCV_APLIC_MSI) += irq-riscv-aplic-msi.o obj-$(CONFIG_RISCV_IMSIC) += irq-riscv-imsic-state.o irq-riscv-imsic-early.o irq-riscv-imsic-platform.o obj-$(CONFIG_SIFIVE_PLIC) += irq-sifive-plic.o obj-$(CONFIG_STARFIVE_JH8100_INTC) += irq-starfive-jh8100-intc.o +obj-$(CONFIG_THEAD_C900_ACLINT_SSWI) += irq-thead-c900-aclint-sswi.o obj-$(CONFIG_IMX_IRQSTEER) += irq-imx-irqsteer.o obj-$(CONFIG_IMX_INTMUX) += irq-imx-intmux.o obj-$(CONFIG_IMX_MU_MSI) += irq-imx-mu-msi.o diff --git a/drivers/irqchip/irq-thead-c900-aclint-sswi.c b/drivers/irqchip/irq-thead-c900-aclint-sswi.c new file mode 100644 index 000000000000..b96d3b81dc14 --- /dev/null +++ b/drivers/irqchip/irq-thead-c900-aclint-sswi.c @@ -0,0 +1,166 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2024 Inochi Amaoto + */ + +#define pr_fmt(fmt) "thead-c900-aclint-sswi: " fmt +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define ACLINT_xSWI_REGISTER_SIZE 4 + +static int sswi_ipi_virq __ro_after_init; +static DEFINE_PER_CPU(void __iomem *, sswi_cpu_regs); + +static void thead_aclint_sswi_ipi_send(unsigned int cpu) +{ + writel_relaxed(0x1, per_cpu(sswi_cpu_regs, cpu)); +} + +static void thead_aclint_sswi_ipi_clear(void) +{ + writel_relaxed(0x0, this_cpu_read(sswi_cpu_regs)); +} + +static void thead_aclint_sswi_ipi_handle(struct irq_desc *desc) +{ + struct irq_chip *chip = irq_desc_get_chip(desc); + + chained_irq_enter(chip, desc); + + csr_clear(CSR_IP, IE_SIE); + thead_aclint_sswi_ipi_clear(); + + ipi_mux_process(); + + chained_irq_exit(chip, desc); +} + +static int thead_aclint_sswi_starting_cpu(unsigned int cpu) +{ + enable_percpu_irq(sswi_ipi_virq, irq_get_trigger_type(sswi_ipi_virq)); + + return 0; +} + +static int thead_aclint_sswi_dying_cpu(unsigned int cpu) +{ + thead_aclint_sswi_ipi_clear(); + + disable_percpu_irq(sswi_ipi_virq); + + return 0; +} + +static int __init aclint_sswi_parse_irq(struct fwnode_handle *fwnode, + void __iomem *reg) +{ + struct of_phandle_args parent; + unsigned long hartid; + u32 contexts, i; + int rc, cpu; + + contexts = of_irq_count(to_of_node(fwnode)); + if (!(contexts)) { + pr_err("%pfwP: no ACLINT SSWI context available\n", fwnode); + return -EINVAL; + } + + for (i = 0; i < contexts; i++) { + rc = of_irq_parse_one(to_of_node(fwnode), i, &parent); + if (rc) + return rc; + + rc = riscv_of_parent_hartid(parent.np, &hartid); + if (rc) + return rc; + + if (parent.args[0] != RV_IRQ_SOFT) + return -ENOTSUPP; + + cpu = riscv_hartid_to_cpuid(hartid); + + per_cpu(sswi_cpu_regs, cpu) = reg + i * ACLINT_xSWI_REGISTER_SIZE; + } + + pr_info("%pfwP: register %u CPU%s\n", fwnode, contexts, str_plural(contexts)); + + return 0; +} + +static int __init aclint_sswi_probe(struct fwnode_handle *fwnode) +{ + struct irq_domain *domain; + void __iomem *reg; + int virq, rc; + + if (!is_of_node(fwnode)) + return -EINVAL; + + reg = of_iomap(to_of_node(fwnode), 0); + if (!reg) + return -ENOMEM; + + /* Parse SSWI setting */ + rc = aclint_sswi_parse_irq(fwnode, reg); + if (rc < 0) + return rc; + + /* If mulitple SSWI devices are present, do not register irq again */ + if (sswi_ipi_virq) + return 0; + + /* Find riscv intc domain and create IPI irq mapping */ + domain = irq_find_matching_fwnode(riscv_get_intc_hwnode(), DOMAIN_BUS_ANY); + if (!domain) { + pr_err("%pfwP: Failed to find INTC domain\n", fwnode); + return -ENOENT; + } + + sswi_ipi_virq = irq_create_mapping(domain, RV_IRQ_SOFT); + if (!sswi_ipi_virq) { + pr_err("unable to create ACLINT SSWI IRQ mapping\n"); + return -ENOMEM; + } + + /* Register SSWI irq and handler */ + virq = ipi_mux_create(BITS_PER_BYTE, thead_aclint_sswi_ipi_send); + if (virq <= 0) { + pr_err("unable to create muxed IPIs\n"); + irq_dispose_mapping(sswi_ipi_virq); + return virq < 0 ? virq : -ENOMEM; + } + + irq_set_chained_handler(sswi_ipi_virq, thead_aclint_sswi_ipi_handle); + + cpuhp_setup_state(CPUHP_AP_IRQ_THEAD_ACLINT_SSWI_STARTING, + "irqchip/thead-aclint-sswi:starting", + thead_aclint_sswi_starting_cpu, + thead_aclint_sswi_dying_cpu); + + riscv_ipi_set_virq_range(virq, BITS_PER_BYTE); + + /* Announce that SSWI is providing IPIs */ + pr_info("providing IPIs using THEAD ACLINT SSWI\n"); + + return 0; +} + +static int __init aclint_sswi_early_probe(struct device_node *node, + struct device_node *parent) +{ + return aclint_sswi_probe(&node->fwnode); +} +IRQCHIP_DECLARE(thead_aclint_sswi, "thead,c900-aclint-sswi", aclint_sswi_early_probe); diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 2361ed4d2b15..799052249c7b 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -147,6 +147,7 @@ enum cpuhp_state { CPUHP_AP_IRQ_EIOINTC_STARTING, CPUHP_AP_IRQ_AVECINTC_STARTING, CPUHP_AP_IRQ_SIFIVE_PLIC_STARTING, + CPUHP_AP_IRQ_THEAD_ACLINT_SSWI_STARTING, CPUHP_AP_IRQ_RISCV_IMSIC_STARTING, CPUHP_AP_IRQ_RISCV_SBI_IPI_STARTING, CPUHP_AP_ARM_MVEBU_COHERENCY, From patchwork Wed Oct 9 22:44:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Inochi Amaoto X-Patchwork-Id: 13829338 X-Patchwork-Delegate: mail@conchuod.ie 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 86EC7CEDDA3 for ; Wed, 9 Oct 2024 22:46:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Y6vsZkeq46s4j+xbTOZsWQMwJJ3/0cvMlwXVa6Gtcqc=; b=MTyANas7G6g4Zb DoyFwB7CkIvcRKsgP4viqSH84ai/wNSG4ZSg6O82pF6l2jOZzAjdeabj/bf6Qxo0HiYWE+PDYZC4p 8wWQ7BnkH/C4HMqpJ8vjj9rpjUGxUtcusn24UgxwmM77iBtuy4CbUS74R1d/Zrc0oIsWJIIT3/7ga RndjoL0uuzFDO0h3+t6Ivn9LrcEz6T601s6WAs24g92Wbrr3uvAOwj7qWrVkaDAPrFJpm4b+Wna1R DFyqi91WFpuEIg/xroKOjLDlcn0RKggm86yR8ovzO+Hjtet/oXbkzNWoyFwtXzp4w3JsoUH5iD/Qh AWTh7uN+gA/Nv22pZF6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1syfSB-0000000Axvm-0FQc; Wed, 09 Oct 2024 22:46:47 +0000 Received: from mail-pf1-x436.google.com ([2607:f8b0:4864:20::436]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1syfQA-0000000AxKD-3vcf for linux-riscv@lists.infradead.org; Wed, 09 Oct 2024 22:44:44 +0000 Received: by mail-pf1-x436.google.com with SMTP id d2e1a72fcca58-71df67c67fcso239914b3a.2 for ; Wed, 09 Oct 2024 15:44:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728513882; x=1729118682; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ncgmlyGfcrqHCYKyqt0DRpGIqa2UXUmRq5v7oAb7ZpU=; b=Bf4o+QXLOFGrdDbaijDHykv2NglopIlKJknarvznLGx4GajqT3CSMEUDsucyKYemos ET8a5MjLCbsjCC65ZGBhMK2QQ8J8O92bWDMIifnhqUstlEvzLFd3N5OlH6e1nQj8C2b2 GyaP4t/hzsE5a7ruwPBOh9DLilmZi+cxqWzy56qfTA91yjA/njxsS76v+ZRryH1lUBfv i0L9oCXRgeESIzjBWVENoH46E9Eem4SW+/sxUFC/0zI0Y/DKOi2xxwPM54K15YAhnCJ0 NxP1oeFiNfiR3dCWjhJzOiyAxgXUYfAhYBj9E2z2MKOEmIvmhRgCKK9lCa978WEITfTz uoiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728513882; x=1729118682; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ncgmlyGfcrqHCYKyqt0DRpGIqa2UXUmRq5v7oAb7ZpU=; b=YIWtkFrU+u/UL0cdwLR9i7Gpdw/0WNfzBSM5Hj0UKq4ZkllTIvk5zWwzJj6mRxmYkj +LcHMxY0ZuF3vq/W5c+sB0xwX4ERvfnV+cMN3w83VjYZsCO6tmxZgabrqhVK6SOysYhi GMI1/M90y5VMdWxHJCVqMpaKfGmQldgjrpYlYeqkaqDnq5TP72hXUO7ysptGiu6ZokoC jM835k6HM3PJUoUlvCPvWaS1B7ma5+S2yizPKjv6EtnScwD2hut4Tg7rx5pLHjSlBvi/ iriOY3JrxBGbj9zf4ZMaUEcWX0+e2NNJPPwyfzD1CSzSMMTuQuG5zMDSy/H+3eZ6qhk7 jJyQ== X-Forwarded-Encrypted: i=1; AJvYcCX+InAzvvUpfr6O/Zx1BnAqzgQtqeiuc/dUaFqjQR/InLM1lJBMmU2I9yA8lweTJnaFVrr8ZvXyZQQNcQ==@lists.infradead.org X-Gm-Message-State: AOJu0Ywh+Muuvxca9fGqI/nN0wUMte76kwfvjs9qA6CLTdSNWpnmF1Bl TpOwKXFNbLl1ozqPz8k14J0ADxTctHBbr+WH7FX5ZOxUO5WStNy1 X-Google-Smtp-Source: AGHT+IEsegox6FAk/S37zA/g3uQmNQ5/YPSSLpXd7JDYIf6OoXCPh+Lo3bP5Hwajxkcu1U6ZdNlXrQ== X-Received: by 2002:a05:6a00:1396:b0:71e:233:9537 with SMTP id d2e1a72fcca58-71e1dbc98eamr6521856b3a.28.1728513882195; Wed, 09 Oct 2024 15:44:42 -0700 (PDT) Received: from localhost ([2001:da8:7001:11::cb]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-71df0ccdb93sm8265778b3a.55.2024.10.09.15.44.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Oct 2024 15:44:41 -0700 (PDT) From: Inochi Amaoto To: Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Peter Zijlstra , Chen Wang , Inochi Amaoto , Guo Ren , Lad Prabhakar , Heikki Krogerus , Yangyu Chen , Jinyu Tang , Hal Feng , Geert Uytterhoeven Cc: Yixun Lan , Inochi Amaoto , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 3/3] riscv: defconfig: Enable T-HEAD C900 ACLINT SSWI drivers Date: Thu, 10 Oct 2024 06:44:09 +0800 Message-ID: <20241009224410.53188-4-inochiama@gmail.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241009224410.53188-1-inochiama@gmail.com> References: <20241009224410.53188-1-inochiama@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241009_154443_053749_6B6EEB49 X-CRM114-Status: UNSURE ( 9.01 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Add support for T-HEAD C900 ACLINT SSWI irqchip. Signed-off-by: Inochi Amaoto --- arch/riscv/configs/defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig index 2341393cfac1..5b1d6325df85 100644 --- a/arch/riscv/configs/defconfig +++ b/arch/riscv/configs/defconfig @@ -256,6 +256,7 @@ CONFIG_RPMSG_CTRL=y CONFIG_RPMSG_VIRTIO=y CONFIG_PM_DEVFREQ=y CONFIG_IIO=y +CONFIG_THEAD_C900_ACLINT_SSWI=y CONFIG_PHY_SUN4I_USB=m CONFIG_PHY_STARFIVE_JH7110_DPHY_RX=m CONFIG_PHY_STARFIVE_JH7110_PCIE=m