[RFC PATCH v3 16/17] ACPI: RISC-V: Create PLIC platform device
From: Sunil V L <sunilvl@ventanamicro.com>
Date: 2023-12-19 17:47:05
Also in:
linux-acpi, linux-pci, linux-riscv, lkml
Subsystem:
acpi, acpi for risc-v (acpi/riscv), the rest · Maintainers:
"Rafael J. Wysocki", Sunil V L, Linus Torvalds
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
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