4 files changed, 33 insertions, 63 deletions

diff --git a/arch/loongarch/kernel/irq.c b/arch/loongarch/kernel/irq.c
index 883e5066ae44..dcb1faf2c2b7 100644
--- a/arch/loongarch/kernel/irq.c
+++ b/arch/loongarch/kernel/irq.c
@@ -87,23 +87,9 @@ static void __init init_vec_parent_group(void)
 	acpi_table_parse(ACPI_SIG_MCFG, early_pci_mcfg_parse);
 }
 
-static int __init get_ipi_irq(void)
-{
-	struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY);
-
-	if (d)
-		return irq_create_mapping(d, INT_IPI);
-
-	return -EINVAL;
-}
-
 void __init init_IRQ(void)
 {
 	int i;
-#ifdef CONFIG_SMP
-	int r, ipi_irq;
-	static int ipi_dummy_dev;
-#endif
 	unsigned int order = get_order(IRQ_STACK_SIZE);
 	struct page *page;
 
@@ -113,13 +99,7 @@ void __init init_IRQ(void)
 	init_vec_parent_group();
 	irqchip_init();
 #ifdef CONFIG_SMP
-	ipi_irq = get_ipi_irq();
-	if (ipi_irq < 0)
-		panic("IPI IRQ mapping failed\n");
-	irq_set_percpu_devid(ipi_irq);
-	r = request_percpu_irq(ipi_irq, loongson_ipi_interrupt, "IPI", &ipi_dummy_dev);
-	if (r < 0)
-		panic("IPI IRQ request failed\n");
+	mp_ops.init_ipi();
 #endif
 
 	for (i = 0; i < NR_IRQS; i++)
diff --git a/arch/loongarch/kernel/perf_event.c b/arch/loongarch/kernel/perf_event.c
index cac7cba81b65..f86a4b838dd7 100644
--- a/arch/loongarch/kernel/perf_event.c
+++ b/arch/loongarch/kernel/perf_event.c
@@ -456,16 +456,6 @@ static void loongarch_pmu_disable(struct pmu *pmu)
 static DEFINE_MUTEX(pmu_reserve_mutex);
 static atomic_t active_events = ATOMIC_INIT(0);
 
-static int get_pmc_irq(void)
-{
-	struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY);
-
-	if (d)
-		return irq_create_mapping(d, INT_PCOV);
-
-	return -EINVAL;
-}
-
 static void reset_counters(void *arg);
 static int __hw_perf_event_init(struct perf_event *event);
 
@@ -473,7 +463,7 @@ static void hw_perf_event_destroy(struct perf_event *event)
 {
 	if (atomic_dec_and_mutex_lock(&active_events, &pmu_reserve_mutex)) {
 		on_each_cpu(reset_counters, NULL, 1);
-		free_irq(get_pmc_irq(), &loongarch_pmu);
+		free_irq(get_percpu_irq(INT_PCOV), &loongarch_pmu);
 		mutex_unlock(&pmu_reserve_mutex);
 	}
 }
@@ -562,7 +552,7 @@ static int loongarch_pmu_event_init(struct perf_event *event)
 	if (event->cpu >= 0 && !cpu_online(event->cpu))
 		return -ENODEV;
 
-	irq = get_pmc_irq();
+	irq = get_percpu_irq(INT_PCOV);
 	flags = IRQF_PERCPU | IRQF_NOBALANCING | IRQF_NO_THREAD | IRQF_NO_SUSPEND | IRQF_SHARED;
 	if (!atomic_inc_not_zero(&active_events)) {
 		mutex_lock(&pmu_reserve_mutex);
diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c
index aabee0b280fe..15b75e671bcd 100644
--- a/arch/loongarch/kernel/smp.c
+++ b/arch/loongarch/kernel/smp.c
@@ -66,11 +66,6 @@ static cpumask_t cpu_core_setup_map;
 struct secondary_data cpuboot_data;
 static DEFINE_PER_CPU(int, cpu_state);
 
-enum ipi_msg_type {
-	IPI_RESCHEDULE,
-	IPI_CALL_FUNCTION,
-};
-
 static const char *ipi_types[NR_IPI] __tracepoint_string = {
 	[IPI_RESCHEDULE] = "Rescheduling interrupts",
 	[IPI_CALL_FUNCTION] = "Function call interrupts",
@@ -190,24 +185,19 @@ static u32 ipi_read_clear(int cpu)
 
 static void ipi_write_action(int cpu, u32 action)
 {
-	unsigned int irq = 0;
-
-	while ((irq = ffs(action))) {
-		uint32_t val = IOCSR_IPI_SEND_BLOCKING;
+	uint32_t val;
 
-		val |= (irq - 1);
-		val |= (cpu << IOCSR_IPI_SEND_CPU_SHIFT);
-		iocsr_write32(val, LOONGARCH_IOCSR_IPI_SEND);
-		action &= ~BIT(irq - 1);
-	}
+	val = IOCSR_IPI_SEND_BLOCKING | action;
+	val |= (cpu << IOCSR_IPI_SEND_CPU_SHIFT);
+	iocsr_write32(val, LOONGARCH_IOCSR_IPI_SEND);
 }
 
-void loongson_send_ipi_single(int cpu, unsigned int action)
+static void loongson_send_ipi_single(int cpu, unsigned int action)
 {
 	ipi_write_action(cpu_logical_map(cpu), (u32)action);
 }
 
-void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action)
+static void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action)
 {
 	unsigned int i;
 
@@ -222,11 +212,11 @@ void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action)
  */
 void arch_smp_send_reschedule(int cpu)
 {
-	loongson_send_ipi_single(cpu, SMP_RESCHEDULE);
+	mp_ops.send_ipi_single(cpu, ACTION_RESCHEDULE);
 }
 EXPORT_SYMBOL_GPL(arch_smp_send_reschedule);
 
-irqreturn_t loongson_ipi_interrupt(int irq, void *dev)
+static irqreturn_t loongson_ipi_interrupt(int irq, void *dev)
 {
 	unsigned int action;
 	unsigned int cpu = smp_processor_id();
@@ -246,6 +236,26 @@ irqreturn_t loongson_ipi_interrupt(int irq, void *dev)
 	return IRQ_HANDLED;
 }
 
+static void loongson_init_ipi(void)
+{
+	int r, ipi_irq;
+
+	ipi_irq = get_percpu_irq(INT_IPI);
+	if (ipi_irq < 0)
+		panic("IPI IRQ mapping failed\n");
+
+	irq_set_percpu_devid(ipi_irq);
+	r = request_percpu_irq(ipi_irq, loongson_ipi_interrupt, "IPI", &irq_stat);
+	if (r < 0)
+		panic("IPI IRQ request failed\n");
+}
+
+struct smp_ops mp_ops = {
+	.init_ipi		= loongson_init_ipi,
+	.send_ipi_single	= loongson_send_ipi_single,
+	.send_ipi_mask		= loongson_send_ipi_mask,
+};
+
 static void __init fdt_smp_setup(void)
 {
 #ifdef CONFIG_OF
@@ -323,7 +333,7 @@ void loongson_boot_secondary(int cpu, struct task_struct *idle)
 
 	csr_mail_send(entry, cpu_logical_map(cpu), 0);
 
-	loongson_send_ipi_single(cpu, SMP_BOOT_CPU);
+	loongson_send_ipi_single(cpu, ACTION_BOOT_CPU);
 }
 
 /*
diff --git a/arch/loongarch/kernel/time.c b/arch/loongarch/kernel/time.c
index e7015f7b70e3..fd5354f9be7c 100644
--- a/arch/loongarch/kernel/time.c
+++ b/arch/loongarch/kernel/time.c
@@ -123,16 +123,6 @@ void sync_counter(void)
 	csr_write64(init_offset, LOONGARCH_CSR_CNTC);
 }
 
-static int get_timer_irq(void)
-{
-	struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY);
-
-	if (d)
-		return irq_create_mapping(d, INT_TI);
-
-	return -EINVAL;
-}
-
 int constant_clockevent_init(void)
 {
 	unsigned int cpu = smp_processor_id();
@@ -142,7 +132,7 @@ int constant_clockevent_init(void)
 	static int irq = 0, timer_irq_installed = 0;
 
 	if (!timer_irq_installed) {
-		irq = get_timer_irq();
+		irq = get_percpu_irq(INT_TI);
 		if (irq < 0)
 			pr_err("Failed to map irq %d (timer)\n", irq);
 	}