+#define SMP_BOOT_CPU BIT(ACTTION_BOOT_CPU)
+#define SMP_RESCHEDULE BIT(ACTTION_RESCHEDULE)
+#define SMP_CALL_FUNCTION BIT(ACTTION_CALL_FUNCTION)
struct secondary_data {
unsigned long stack;
@@ -71,7 +79,8 @@ extern struct secondary_data cpuboot_data;
extern asmlinkage void smpboot_entry(void);
extern asmlinkage void start_secondary(void);
-
+extern void arch_send_call_function_single_ipi(int cpu);
+extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
extern void calculate_cpu_foreign_map(void);
/*
@@ -79,16 +88,6 @@ extern void calculate_cpu_foreign_map(void);
*/
extern void show_ipi_list(struct seq_file *p, int prec);
-static inline void arch_send_call_function_single_ipi(int cpu)
-{
- loongson_send_ipi_single(cpu, SMP_CALL_FUNCTION);
-}
-
-static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
-{
- loongson_send_ipi_mask(mask, SMP_CALL_FUNCTION);
-}
-
#ifdef CONFIG_HOTPLUG_CPU
static inline int __cpu_disable(void)
{
diff --git a/arch/loongarch/kernel/irq.c b/arch/loongarch/kernel/irq.c
index 883e5066ae44..ce36897d1e5a 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");
+ smp_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 0491bf453cd4..3265c8f33223 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 2b49d30eb7c0..3d3ec07d1ec4 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",
@@ -123,24 +118,19 @@ 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;
@@ -148,6 +138,16 @@ void loongson_send_ipi_mask(const struct cpumask *mask, unsigned int action)
ipi_write_action(cpu_logical_map(i), (u32)action);
}
+void arch_send_call_function_single_ipi(int cpu)
+{
+ smp_ops.send_ipi_single(cpu, ACTTION_CALL_FUNCTION);
+}
+
+void arch_send_call_function_ipi_mask(const struct cpumask *mask)
+{
+ smp_ops.send_ipi_mask(mask, ACTTION_CALL_FUNCTION);
+}
+
/*
* This function sends a 'reschedule' IPI to another CPU.
* it goes straight through and wastes no time serializing
@@ -155,11 +155,11 @@ 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);
+ smp_ops.send_ipi_single(cpu, ACTTION_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();
@@ -179,6 +179,26 @@ 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 smp_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
@@ -256,7 +276,7 @@ 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, ACTTION_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);
}
--
2.39.3
