From mboxrd@z Thu Jan 1 00:00:00 1970 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 2FAD8CA0EC4 for ; Tue, 12 Aug 2025 16:19:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:To:From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=HPTcCCtVVebCSCFqhjYn1iuSA7I2nA7b2tvtUS0MQzQ=; b=Jub8GhSZq323KmP9Vz/wG6BF3x jDGKsSXb0A9FXxJzbX+m7kditXXGP1oiLSTiNI3ZzHeAcRjdRfUTQoa1iS+yrU99CUx5J4qr3itqa uBWOrKmRviG5yrZQF4U+qdxd9WhhTOBvFic/Lrmg2BQVrIWkgYIB2wzTYkwCTAlEx7U0efzd+SOs/ jP3iYjlRX8nX375CmJ4GrKGv2UCSKgTgUzBU+5Yd+vU2T45iY1GhVL6mVufUC9+7V5KtAGMw/oZib lZtWY1J01PLI6+NM9s50bPal1+dLWjsBIKSYCYdASXt6/B3ae48Nw68n2pB8UyC+eM40Q4O/l/3YI mxJoCyRQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ulrhz-0000000BHab-2cMo; Tue, 12 Aug 2025 16:18:43 +0000 Received: from mail.aspeedtech.com ([211.20.114.72] helo=TWMBX01.aspeed.com) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ullvt-0000000ATGU-3TnJ for linux-arm-kernel@lists.infradead.org; Tue, 12 Aug 2025 10:08:42 +0000 Received: from TWMBX01.aspeed.com (192.168.0.62) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Tue, 12 Aug 2025 18:08:30 +0800 Received: from twmbx02.aspeed.com (192.168.10.13) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Tue, 12 Aug 2025 18:08:30 +0800 From: Ryan Chen To: ryan_chen , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Joel Stanley , Andrew Jeffery , Kevin Chen , , , , Subject: [PATCH v4 2/2] Irqchip/ast2700-intc: add debugfs support and AST2700 INTC0/INTC1 routing/protection display Date: Tue, 12 Aug 2025 18:08:30 +0800 Message-ID: <20250812100830.145578-3-ryan_chen@aspeedtech.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250812100830.145578-1-ryan_chen@aspeedtech.com> References: <20250812100830.145578-1-ryan_chen@aspeedtech.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250812_030841_879404_95B85940 X-CRM114-Status: GOOD ( 19.51 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org AST2700 INTC0/INTC1 nodes ("aspeed,ast2700-intc0/1") not only include the interrupt controller child node ("aspeed,ast2700-intc-ic"), but also provide interrupt routing and register protection features. Adds debugfs entries for interrupt routing and protection status for AST2700 INTC0/INTC1. Signed-off-by: Ryan Chen --- drivers/irqchip/Kconfig | 6 + drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-ast2700-intc.c | 174 +++++++++++++++++++++++++++++ 3 files changed, 181 insertions(+) create mode 100644 drivers/irqchip/irq-ast2700-intc.c diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index c3928ef79344..9f6473bf4055 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -97,6 +97,12 @@ config AL_FIC help Support Amazon's Annapurna Labs Fabric Interrupt Controller. +config AST2700_INTC + tristate "AST2700 Interrupt Controller" + depends on ARCH_ASPEED + help + Support AST2700 Interrupt Controller. + config ATMEL_AIC_IRQ bool select GENERIC_IRQ_CHIP diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index 23ca4959e6ce..eea0a8699204 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -88,6 +88,7 @@ obj-$(CONFIG_LS_EXTIRQ) += irq-ls-extirq.o obj-$(CONFIG_LS_SCFG_MSI) += irq-ls-scfg-msi.o obj-$(CONFIG_ARCH_ASPEED) += irq-aspeed-vic.o irq-aspeed-i2c-ic.o irq-aspeed-scu-ic.o obj-$(CONFIG_ARCH_ASPEED) += irq-aspeed-intc.o +obj-$(CONFIG_AST2700_INTC) += irq-ast2700-intc.o obj-$(CONFIG_STM32MP_EXTI) += irq-stm32mp-exti.o obj-$(CONFIG_STM32_EXTI) += irq-stm32-exti.o obj-$(CONFIG_QCOM_IRQ_COMBINER) += qcom-irq-combiner.o diff --git a/drivers/irqchip/irq-ast2700-intc.c b/drivers/irqchip/irq-ast2700-intc.c new file mode 100644 index 000000000000..7c7241539fe5 --- /dev/null +++ b/drivers/irqchip/irq-ast2700-intc.c @@ -0,0 +1,174 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AST2700 Interrupt Controller + */ + +#include +#include +#include +#include +#include +#include +#include + +/* INTC0 register layout */ +#define INTC0_PROT_OFFS 0x40 +#define INTC0_ROUTING_SEL0_BASE 0x200 +#define INTC0_ROUTING_GAP 0x100 +#define INTC0_GROUPS 4 + +/* INTC1 register layout */ +#define INTC1_PROT_OFFS 0x00 +#define INTC1_ROUTING_SEL0_BASE 0x80 +#define INTC1_ROUTING_GAP 0x20 +#define INTC1_GROUPS 6 + +struct aspeed_intc_data { + const char *name; + u32 prot_offs; + u32 rout_sel0_base; + u32 rout_gap; + unsigned int groups; +}; + +static const struct aspeed_intc_data aspeed_intc0_data = { + .name = "INTC0", + .prot_offs = INTC0_PROT_OFFS, + .rout_sel0_base = INTC0_ROUTING_SEL0_BASE, + .rout_gap = INTC0_ROUTING_GAP, + .groups = INTC0_GROUPS, +}; + +static const struct aspeed_intc_data aspeed_intc1_data = { + .name = "INTC1", + .prot_offs = INTC1_PROT_OFFS, + .rout_sel0_base = INTC1_ROUTING_SEL0_BASE, + .rout_gap = INTC1_ROUTING_GAP, + .groups = INTC1_GROUPS, +}; + +struct aspeed_intc { + void __iomem *base; + const struct aspeed_intc_data *data; +#ifdef CONFIG_DEBUG_FS + struct dentry *dbg_root; +#endif +}; + +#ifdef CONFIG_DEBUG_FS +static int aspeed_intc_regs_show(struct seq_file *s, void *unused) +{ + struct aspeed_intc *intc = s->private; + const struct aspeed_intc_data *d = intc->data; + void __iomem *base = intc->base; + unsigned int i; + + for (i = 0; i < d->groups; i++) { + void __iomem *b = base + d->rout_sel0_base + i * 4; + u32 r0 = readl(b); + u32 r1 = readl(b + d->rout_gap); + u32 r2 = readl(b + 2 * d->rout_gap); + + seq_printf(s, "ROUTE[%u]: 0x%08x 0x%08x 0x%08x\n", i, r0, r1, r2); + } + return 0; +} + +static int aspeed_intc_regs_open(struct inode *inode, struct file *file) +{ + return single_open(file, aspeed_intc_regs_show, inode->i_private); +} + +static const struct file_operations aspeed_intc_regs_fops = { + .owner = THIS_MODULE, + .open = aspeed_intc_regs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int aspeed_intc_prot_show(struct seq_file *s, void *unused) +{ + struct aspeed_intc *intc = s->private; + const struct aspeed_intc_data *d = intc->data; + u32 prot = readl(intc->base + d->prot_offs); + + seq_printf(s, "%s_PROT: 0x%08x\n", d->name, prot); + return 0; +} + +static int aspeed_intc_prot_open(struct inode *inode, struct file *file) +{ + return single_open(file, aspeed_intc_prot_show, inode->i_private); +} + +static const struct file_operations aspeed_intc_prot_fops = { + .owner = THIS_MODULE, + .open = aspeed_intc_prot_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; +#endif /* CONFIG_DEBUG_FS */ + +static int aspeed_intc_probe(struct platform_device *pdev) +{ + const struct aspeed_intc_data *data; + struct aspeed_intc *intc; + struct resource *res; + + data = of_device_get_match_data(&pdev->dev); + if (!data) + return -ENODEV; + + intc = devm_kzalloc(&pdev->dev, sizeof(*intc), GFP_KERNEL); + if (!intc) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + intc->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(intc->base)) + return PTR_ERR(intc->base); + + intc->data = data; + + platform_set_drvdata(pdev, intc); + +#ifdef CONFIG_DEBUG_FS + intc->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), NULL); + if (intc->dbg_root) { + debugfs_create_file("routing", 0400, intc->dbg_root, intc, + &aspeed_intc_regs_fops); + debugfs_create_file("protection", 0400, intc->dbg_root, intc, + &aspeed_intc_prot_fops); + } +#endif + return 0; +} + +static void aspeed_intc_remove(struct platform_device *pdev) +{ +#ifdef CONFIG_DEBUG_FS + struct aspeed_intc *intc = platform_get_drvdata(pdev); + + if (intc && intc->dbg_root) + debugfs_remove_recursive(intc->dbg_root); +#endif +} + +static const struct of_device_id aspeed_intc_of_match[] = { + { .compatible = "aspeed,ast2700-intc0", .data = &aspeed_intc0_data }, + { .compatible = "aspeed,ast2700-intc1", .data = &aspeed_intc1_data }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, aspeed_intc_of_match); + +static struct platform_driver aspeed_intc_driver = { + .probe = aspeed_intc_probe, + .remove = aspeed_intc_remove, + .driver = { + .name = "aspeed-ast2700-intc", + .of_match_table = aspeed_intc_of_match, + }, +}; +module_platform_driver(aspeed_intc_driver); -- 2.34.1