Received-SPF: pass (google.com: domain of linux-kernel+bounces-5728-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161;
From: Sunil V L <sunilvl@ventanamicro.com>
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
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Len Brown <lenb@kernel.org>,
	Anup Patel <anup@brainfault.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Haibo Xu <haibo1.xu@intel.com>,
	Conor Dooley <conor.dooley@microchip.com>,
	Andrew Jones <ajones@ventanamicro.com>,
	=?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn@kernel.org>,
	Marc Zyngier <maz@kernel.org>,
	Sunil V L <sunilvl@ventanamicro.com>
Subject: [RFC PATCH v3 16/17] ACPI: RISC-V: Create PLIC platform device
Date: Tue, 19 Dec 2023 23:15:25 +0530
Message-Id: <20231219174526.2235150-17-sunilvl@ventanamicro.com>
In-Reply-To: <20231219174526.2235150-1-sunilvl@ventanamicro.com>
References: <20231219174526.2235150-1-sunilvl@ventanamicro.com>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Since PLIC needs to be a platform device, probe the MADT and create
platform devices for each PLIC in the system.

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
---
 drivers/acpi/riscv/init.c |  1 +
 drivers/acpi/riscv/init.h |  1 +
 drivers/acpi/riscv/irq.c  | 19 +++++++++++++++++++
 3 files changed, 21 insertions(+)

diff --git a/drivers/acpi/riscv/init.c b/drivers/acpi/riscv/init.c
index e7eff7ab1474..c6fd4097e8ae 100644
--- a/drivers/acpi/riscv/init.c
+++ b/drivers/acpi/riscv/init.c
@@ -11,4 +11,5 @@
 void __init acpi_riscv_init(void)
 {
 	riscv_acpi_aplic_platform_init();
+	riscv_acpi_plic_platform_init();
 }
diff --git a/drivers/acpi/riscv/init.h b/drivers/acpi/riscv/init.h
index 17bcf0baaadb..b4b305d83b3a 100644
--- a/drivers/acpi/riscv/init.h
+++ b/drivers/acpi/riscv/init.h
@@ -3,3 +3,4 @@
 
 void __init riscv_acpi_imsic_platform_init(void);
 void __init riscv_acpi_aplic_platform_init(void);
+void __init riscv_acpi_plic_platform_init(void);
diff --git a/drivers/acpi/riscv/irq.c b/drivers/acpi/riscv/irq.c
index d08a851ab6dc..f14ea43b0178 100644
--- a/drivers/acpi/riscv/irq.c
+++ b/drivers/acpi/riscv/irq.c
@@ -148,3 +148,22 @@ void __init riscv_acpi_aplic_platform_init(void)
 {
 	acpi_table_parse_madt(ACPI_MADT_TYPE_APLIC, aplic_parse_madt, 0);
 }
+
+static int __init plic_parse_madt(union acpi_subtable_headers *header,
+				  const unsigned long end)
+{
+	struct acpi_madt_plic *plic = (struct acpi_madt_plic *)header;
+
+	return irqchip_add_platform_device("riscv-plic",
+					   plic->id,
+					   plic->base_addr,
+					   plic->size,
+					   plic->gsi_base,
+					   plic->num_irqs,
+					   header);
+}
+
+void __init riscv_acpi_plic_platform_init(void)
+{
+	acpi_table_parse_madt(ACPI_MADT_TYPE_PLIC, plic_parse_madt, 0);
+}
-- 
2.39.2