From patchwork Wed Oct 25 20:23:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sunil V L X-Patchwork-Id: 13436772 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 2580CC25B6B for ; Wed, 25 Oct 2023 20:27:17 +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:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=555lnW05PQqAylDpba9OJGqz1DgITF5kHTblsuPTRKw=; b=4yKotZ3CmtOjxr LOfdgHtfKhM0wKgfiIkn7POBEfCFuVh2Tugil70Ml1akqbeMFLZlVYJ/Uwq+mFbLncQm5iXFxNPln /M7ROoOJXR45N+l/6/ZoDXZi+fXwKXY3dy6Xo5Kt4LbjzELD2+CozZ8ELDP+XCBWLNCkhN1TfNPGq SNKEXW3dBFg3a7cGFrMFnV7Om/SusW/E3TMcjx0p/XWk/vGqtrIIyI/OKT/ZM5LLMjhYmW1/d5txX giIvgdlxVl4xPPaQm8zVdwXef9qO6brtNRSOYIAjPq54RbnscZd133NP+UIfSCUtko2lVDFLJn879 KKiG/lLCQ6YB/qXtcCyw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qvkT9-00D4la-2T; Wed, 25 Oct 2023 20:27:11 +0000 Received: from mail-pg1-x52d.google.com ([2607:f8b0:4864:20::52d]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qvkS8-00D3pC-0J for linux-riscv@lists.infradead.org; Wed, 25 Oct 2023 20:26:10 +0000 Received: by mail-pg1-x52d.google.com with SMTP id 41be03b00d2f7-5a1d89ff4b9so167457a12.0 for ; Wed, 25 Oct 2023 13:26:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1698265565; x=1698870365; 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=YyAbjmaR4eN/4ltFJMCVbHeHJN24CQKSdc3guUQ+sXY=; b=XojkXMKCh1UUoZtwQBZ8yUj1Qrfzx8bxujo39ROANNcvQVUCVra0A2MSCjYIsoZ5WZ +izGkaSImwBFQWo1eq4LOKAmdIB49MPpFP5UhdAFaU7/fW4iZwer5NYKDMl/g8mDCBZv 8CdwThV2rnA5JmUgogtLPEW/FnFYdwQMCwb0w0EJxUWohuFwnVulzHLFjQBwgWyUjJ4T jcEEF76AyRJTTq89nFcokOEcMcEuUYDdGpEC629N3SrWe2rBv8blYy+laeMWHZbxDL+8 YATwEkA40Zvnc06LsIWJe96gN5TFUGvYQd7mWC1UAdjh7qqZ4VPCNbWh43B65mH7WSjC J8tw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698265565; x=1698870365; 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=YyAbjmaR4eN/4ltFJMCVbHeHJN24CQKSdc3guUQ+sXY=; b=Uixz2GPjk5Kl1jxkWTSfIZiv7QhLdJztBkiVUBZUvQwZnGxo5g9iXjzalJqahHywby 68P6EdPjYd8kMFY24HaVw/G8Ny2edONDn0y+0luvlxKL9vzzA1ZKJW0ZRkPVJWCZkXXt +YW7mCShbeku9JfJ/dBK8BlBpAOXwHAd58p4ksv3idf8rDiPGqVzrqpLMCJrLyvs89RG J/6Z983UBGxO7q30CUUM/WNPOfcWtdOOy6LUXEacJVVfgwC0SQEEnIc/KtBIyFoAh0jr bHf0aguVOnYdWgOsX2U8SvZ/2VHeIdpw98Fd3mq8sHN58NjR9PSEtS0UIlN1jWY4Y1Sk dOTw== X-Gm-Message-State: AOJu0Yyldoz0usKJ1OBacpYYtmFE83VGDKHDtnNAlLkNSjksS4FjCJOH IzagOVUvj1OYnbp/DXmBXo6rFg== X-Google-Smtp-Source: AGHT+IF7LV+DTM8Xp2zCb8vMCjjf9RgtWialAHShVkTza7omnaz58BwRnPvcOqBLoChX7glmevCqxQ== X-Received: by 2002:a05:6a20:3d13:b0:16b:8132:b547 with SMTP id y19-20020a056a203d1300b0016b8132b547mr8489178pzi.4.1698265564985; Wed, 25 Oct 2023 13:26:04 -0700 (PDT) Received: from sunil-pc.Dlink ([106.51.188.78]) by smtp.gmail.com with ESMTPSA id y3-20020aa79423000000b006b84ed9371esm10079590pfo.177.2023.10.25.13.25.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 25 Oct 2023 13:26:04 -0700 (PDT) From: Sunil V L To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, linux-serial@vger.kernel.org Subject: [RFC PATCH v2 20/21] ACPI: RISC-V: Create APLIC platform device Date: Thu, 26 Oct 2023 01:53:43 +0530 Message-Id: <20231025202344.581132-21-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231025202344.581132-1-sunilvl@ventanamicro.com> References: <20231025202344.581132-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231025_132608_142497_0A29BFAA X-CRM114-Status: GOOD ( 16.53 ) 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: , Cc: Albert Ou , Haibo Xu , Jiri Slaby , "Rafael J . Wysocki" , Catalin Marinas , Anup Patel , Atish Kumar Patra , Greg Kroah-Hartman , Conor Dooley , Palmer Dabbelt , Paul Walmsley , Bjorn Helgaas , Thomas Gleixner , Andrew Jones , Will Deacon , Len Brown Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Since APLIC needs to be a platform device, probe the MADT and create platform devices for each APLIC in the system. Signed-off-by: Sunil V L --- drivers/acpi/riscv/init.c | 2 ++ drivers/acpi/riscv/init.h | 5 +++ drivers/acpi/riscv/irq.c | 74 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 81 insertions(+) create mode 100644 drivers/acpi/riscv/init.h diff --git a/drivers/acpi/riscv/init.c b/drivers/acpi/riscv/init.c index b5807bbdb171..e7eff7ab1474 100644 --- a/drivers/acpi/riscv/init.c +++ b/drivers/acpi/riscv/init.c @@ -6,7 +6,9 @@ */ #include +#include "init.h" void __init acpi_riscv_init(void) { + riscv_acpi_aplic_platform_init(); } diff --git a/drivers/acpi/riscv/init.h b/drivers/acpi/riscv/init.h new file mode 100644 index 000000000000..17bcf0baaadb --- /dev/null +++ b/drivers/acpi/riscv/init.h @@ -0,0 +1,5 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#include + +void __init riscv_acpi_imsic_platform_init(void); +void __init riscv_acpi_aplic_platform_init(void); diff --git a/drivers/acpi/riscv/irq.c b/drivers/acpi/riscv/irq.c index 36e0525b3235..fbccecdcbf8b 100644 --- a/drivers/acpi/riscv/irq.c +++ b/drivers/acpi/riscv/irq.c @@ -6,6 +6,8 @@ */ #include +#include +#include #include static int irqchip_cmp_func(const void *in0, const void *in1) @@ -30,3 +32,75 @@ void arch_sort_irqchip_probe(struct acpi_probe_entry *ap_head, int nr) return; sort(ape, nr, sizeof(*ape), irqchip_cmp_func, NULL); } + +static int __init irqchip_add_platform_device(char *irqchip_name, u32 irqchip_id, + resource_size_t iomem_res_start, + resource_size_t iomem_res_size, + union acpi_subtable_headers *header) +{ + struct platform_device *pdev; + struct fwnode_handle *fn; + struct resource *res; + int ret; + + fn = irq_domain_alloc_named_id_fwnode(irqchip_name, irqchip_id); + if (!fn) + return -ENOMEM; + + pdev = platform_device_alloc(irqchip_name, irqchip_id); + if (!pdev) { + irq_domain_free_fwnode(fn); + return -ENOMEM; + } + + res = kcalloc(1, sizeof(*res), GFP_KERNEL); + if (!res) { + irq_domain_free_fwnode(fn); + platform_device_put(pdev); + return -ENOMEM; + } + + res->start = iomem_res_start; + res->end = res->start + iomem_res_size - 1; + res->flags = IORESOURCE_MEM; + ret = platform_device_add_resources(pdev, res, 1); + /* + * Resources are duplicated in platform_device_add_resources, + * free their allocated memory + */ + kfree(res); + + /* + * Add copy of aplic pointer so that platform driver get aplic details. + */ + ret = platform_device_add_data(pdev, &header, sizeof(header)); + if (ret) { + irq_domain_free_fwnode(fn); + platform_device_put(pdev); + return ret; + } + + pdev->dev.fwnode = fn; + ret = platform_device_add(pdev); + if (ret) { + irq_domain_free_fwnode(fn); + platform_device_put(pdev); + return ret; + } + + return 0; +} + +static int __init aplic_parse_madt(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_madt_aplic *aplic = (struct acpi_madt_aplic *)header; + + return irqchip_add_platform_device("riscv-aplic", aplic->id, aplic->base_addr, + aplic->size, header); +} + +void __init riscv_acpi_aplic_platform_init(void) +{ + acpi_table_parse_madt(ACPI_MADT_TYPE_APLIC, aplic_parse_madt, 0); +}