From 0c60a31ce62ca3e93550868fd699dfc4dfc4e795 Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Tue, 28 Mar 2023 09:22:18 +0530 Subject: irqchip/riscv-intc: Allow drivers to directly discover INTC hwnode Various RISC-V drivers (such as SBI IPI, SBI Timer, SBI PMU, and KVM RISC-V) don't have associated DT node but these drivers need standard per-CPU (local) interrupts defined by the RISC-V privileged specification. We add riscv_get_intc_hwnode() in arch/riscv which allows RISC-V drivers not having DT node to discover INTC hwnode which in-turn helps these drivers to map per-CPU (local) interrupts provided by the INTC driver. Signed-off-by: Anup Patel Reviewed-by: Atish Patra Acked-by: Palmer Dabbelt Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20230328035223.1480939-3-apatel@ventanamicro.com --- arch/riscv/kernel/irq.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'arch/riscv/kernel') diff --git a/arch/riscv/kernel/irq.c b/arch/riscv/kernel/irq.c index 7207fa08d78f..96d3171f0ca1 100644 --- a/arch/riscv/kernel/irq.c +++ b/arch/riscv/kernel/irq.c @@ -7,9 +7,27 @@ #include #include +#include +#include #include #include +static struct fwnode_handle *(*__get_intc_node)(void); + +void riscv_set_intc_hwnode_fn(struct fwnode_handle *(*fn)(void)) +{ + __get_intc_node = fn; +} + +struct fwnode_handle *riscv_get_intc_hwnode(void) +{ + if (__get_intc_node) + return __get_intc_node(); + + return NULL; +} +EXPORT_SYMBOL_GPL(riscv_get_intc_hwnode); + int arch_show_interrupts(struct seq_file *p, int prec) { show_ipi_stats(p, prec); -- cgit v1.2.3-58-ga151