diff options
Diffstat (limited to 'arch/riscv/kernel/smp.c')
| -rw-r--r-- | arch/riscv/kernel/smp.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/arch/riscv/kernel/smp.c b/arch/riscv/kernel/smp.c index b18cd6c8e8fb..eb878abcaaf8 100644 --- a/arch/riscv/kernel/smp.c +++ b/arch/riscv/kernel/smp.c @@ -8,12 +8,15 @@ * Copyright (C) 2017 SiFive */ +#include <linux/cpu.h> #include <linux/interrupt.h> +#include <linux/profile.h> #include <linux/smp.h> #include <linux/sched.h> #include <linux/seq_file.h> #include <linux/delay.h> +#include <asm/clint.h> #include <asm/sbi.h> #include <asm/tlbflush.h> #include <asm/cacheflush.h> @@ -90,7 +93,10 @@ static void send_ipi_mask(const struct cpumask *mask, enum ipi_message_type op) smp_mb__after_atomic(); riscv_cpuid_to_hartid_mask(mask, &hartid_mask); - sbi_send_ipi(cpumask_bits(&hartid_mask)); + if (IS_ENABLED(CONFIG_RISCV_SBI)) + sbi_send_ipi(cpumask_bits(&hartid_mask)); + else + clint_send_ipi_mask(&hartid_mask); } static void send_ipi_single(int cpu, enum ipi_message_type op) @@ -101,12 +107,18 @@ static void send_ipi_single(int cpu, enum ipi_message_type op) set_bit(op, &ipi_data[cpu].bits); smp_mb__after_atomic(); - sbi_send_ipi(cpumask_bits(cpumask_of(hartid))); + if (IS_ENABLED(CONFIG_RISCV_SBI)) + sbi_send_ipi(cpumask_bits(cpumask_of(hartid))); + else + clint_send_ipi_single(hartid); } static inline void clear_ipi(void) { - csr_clear(CSR_SIP, SIE_SSIE); + if (IS_ENABLED(CONFIG_RISCV_SBI)) + csr_clear(CSR_IP, IE_SIE); + else + clint_clear_ipi(cpuid_to_hartid_map(smp_processor_id())); } void riscv_software_interrupt(void) |