linux-kernel - [RFC PATCH v3 16/17] ACPI: RISC-V: Create PLIC platform device

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20231219174526.2235150-17-sunilvl@ventanamicro.com>
Date: Tue, 19 Dec 2023 23:15:25 +0530
From: Sunil V L <sunilvl@...tanamicro.com>
To: linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	linux-acpi@...r.kernel.org,
	linux-pci@...r.kernel.org
Cc: Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>,
	Anup Patel <anup@...infault.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Haibo Xu <haibo1.xu@...el.com>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Andrew Jones <ajones@...tanamicro.com>,
	Björn Töpel <bjorn@...nel.org>,
	Marc Zyngier <maz@...nel.org>,
	Sunil V L <sunilvl@...tanamicro.com>
Subject: [RFC PATCH v3 16/17] ACPI: RISC-V: Create PLIC platform device

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@...tanamicro.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