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: 737887 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E7CEF339A8 for ; Wed, 25 Oct 2023 20:26:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="lYxzdUsu" Received: from mail-pg1-x52e.google.com (mail-pg1-x52e.google.com [IPv6:2607:f8b0:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8122A1BB for ; Wed, 25 Oct 2023 13:26:05 -0700 (PDT) Received: by mail-pg1-x52e.google.com with SMTP id 41be03b00d2f7-5a1d89ff4b9so167455a12.0 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=vger.kernel.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=lYxzdUsuOneYhoIV+rYgVVKZNSp0/KjI1w4hVj4ZjBNi+d684vIjZpU3C5bvKho2ua T2HrWtolaPG2TtCyFcRW3Xxn5fhO+hrUq0ptTInqJZpUTl6SEfVKEY0lCWGHetvIItds a1q4/Rd9BDYEV60OZ/wnKfgr2DV0HhRXr7hQWLRB7a4JI6UCSb1IEnbVRoCK6N5+zJQ0 E0xjWFarsTv4yN7dEsRjvdFs32Fj+9KZwuRWlZfe+pfoND04lmh6m1gf2zVvL+qSKrgH Al57+cknEsACPvo1q0XjaTcQjPfchYsjS+zI9JL+wL2NK2BykB3W+pb5SlOr+1hLhTKX nSSg== 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=AggfRwg/cYphVH2oL6xx3X4cnl+TxPHnnEhJqSEDt3WX4Ot/BiLjw3S8vK02jFtwq6 x79qvOjS1gsJ5kBsHurjIrOFd5Kyao7RiMxrs8aml45YgixOL1brengNPrTheQ8iAnlc CaNrLIEaJaDLypzCvPqPIF+WrRoqB1bcObCvYmoZbAiZkNfKpPHtusgZ2D0MOzCHPHVr EFuJzu3r7hCXMWqy/vk0/VF8SAYt54SOhmwTGx1OD8kimaLIFvOhrdPQxRDNHWhBxd+O d6P+pTLZHObsHmtIZdfck0w56og0D1LcHjW5XXgmqSC4N+QGgO51lbAXZbObqi89X5J6 BoTQ== X-Gm-Message-State: AOJu0YxAaWKToXa/tsC5Lxx4mvHjIoJcZZjhnZjHDolAZbXgJaE0vULF dvy3fumrtDRl2vu/V9egX9bDtA== 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 Cc: Catalin Marinas , Will Deacon , Paul Walmsley , Palmer Dabbelt , Albert Ou , "Rafael J . Wysocki" , Len Brown , Bjorn Helgaas , Anup Patel , Thomas Gleixner , Greg Kroah-Hartman , Jiri Slaby , Conor Dooley , Andrew Jones , Atish Kumar Patra , Haibo Xu , Sunil V L 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> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Level: * 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); +}