From: Paul Burton <paulburton@xxxxxxxxxx>
Use CM's GCR_CL_REDIRECT register to access registers in remote clusters,
so users of gic_with_each_online_cpu() gain support for multi-cluster with
no further changes.
Signed-off-by: Paul Burton <paulburton@xxxxxxxxxx>
Signed-off-by: Chao-ying Fu <cfu@xxxxxxxxxxxx>
Signed-off-by: Dragan Mladjenovic <dragan.mladjenovic@xxxxxxxxxx>
Signed-off-by: Aleksandar Rikalo <arikalo@xxxxxxxxx>
Tested-by: Serge Semin <fancer.lancer@xxxxxxxxx>
Tested-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxx>
---
drivers/irqchip/irq-mips-gic.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c
index 6c7a7d2f0438..29bdfdce2123 100644
--- a/drivers/irqchip/irq-mips-gic.c
+++ b/drivers/irqchip/irq-mips-gic.c
@@ -88,6 +88,12 @@ static int __gic_with_next_online_cpu(int prev)
return cpu;
}
+static inline void gic_unlock_cluster(void)
+{
+ if (mips_cps_multicluster_cpus())
+ mips_cm_unlock_other();
+}
+
/**
* for_each_online_cpu_gic() - Iterate over online CPUs, access local registers
* @cpu: An integer variable to hold the current CPU number
@@ -102,6 +108,7 @@ static int __gic_with_next_online_cpu(int prev)
guard(raw_spinlock_irqsave)(gic_lock); \
for ((cpu) = __gic_with_next_online_cpu(-1); \
(cpu) < nr_cpu_ids; \
+ gic_unlock_cluster(), \
(cpu) = __gic_with_next_online_cpu(cpu))
static void gic_clear_pcpu_masks(unsigned int intr)
--
2.25.1
