diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/riscv/irq.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/acpi/riscv/irq.c b/drivers/acpi/riscv/irq.c index cc1928422418..d9a2154d6c6a 100644 --- a/drivers/acpi/riscv/irq.c +++ b/drivers/acpi/riscv/irq.c @@ -168,6 +168,33 @@ static int __init riscv_acpi_register_ext_intc(u32 gsi_base, u32 nr_irqs, u32 nr return 0; } +static acpi_status __init riscv_acpi_create_gsi_map_smsi(acpi_handle handle, u32 level, + void *context, void **return_value) +{ + acpi_status status; + u64 gbase; + + if (!acpi_has_method(handle, "_GSB")) { + acpi_handle_err(handle, "_GSB method not found\n"); + return AE_ERROR; + } + + status = acpi_evaluate_integer(handle, "_GSB", NULL, &gbase); + if (ACPI_FAILURE(status)) { + acpi_handle_err(handle, "failed to evaluate _GSB method\n"); + return status; + } + + riscv_acpi_register_ext_intc(gbase, 0, 0, 0, ACPI_RISCV_IRQCHIP_SMSI); + status = riscv_acpi_update_gsi_handle((u32)gbase, handle); + if (ACPI_FAILURE(status)) { + acpi_handle_err(handle, "failed to find the GSI mapping entry\n"); + return status; + } + + return AE_OK; +} + static acpi_status __init riscv_acpi_create_gsi_map(acpi_handle handle, u32 level, void *context, void **return_value) { @@ -222,6 +249,9 @@ void __init riscv_acpi_init_gsi_mapping(void) if (acpi_table_parse_madt(ACPI_MADT_TYPE_APLIC, riscv_acpi_aplic_parse_madt, 0) > 0) acpi_get_devices("RSCV0002", riscv_acpi_create_gsi_map, NULL, NULL); + + /* Unlike PLIC/APLIC, SYSMSI doesn't have MADT */ + acpi_get_devices("RSCV0006", riscv_acpi_create_gsi_map_smsi, NULL, NULL); } static acpi_handle riscv_acpi_get_gsi_handle(u32 gsi) |