On 2021/5/10 21:48, Marc Zyngier wrote:
As we are about to add some more things to the timer IRQ
configuration, move this code out of the main timer init code
into its own set of functions.
No functional changes.
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/kvm/arch_timer.c | 61 ++++++++++++++++++++++---------------
1 file changed, 37 insertions(+), 24 deletions(-)
diff --git a/arch/arm64/kvm/arch_timer.c b/arch/arm64/kvm/arch_timer.c
index e2288b6bf435..7fa4f446456a 100644
--- a/arch/arm64/kvm/arch_timer.c
+++ b/arch/arm64/kvm/arch_timer.c
@@ -973,6 +973,39 @@ static int kvm_timer_dying_cpu(unsigned int cpu)
return 0;
}
+static void kvm_irq_fixup_flags(unsigned int virq, u32 *flags)
+{
+ *flags = irq_get_trigger_type(virq);
+ if (*flags != IRQF_TRIGGER_HIGH && *flags != IRQF_TRIGGER_LOW) {
+ kvm_err("Invalid trigger for timer IRQ%d, assuming level low\n",
+ virq);
+ *flags = IRQF_TRIGGER_LOW;
+ }
+}
+
+static int kvm_irq_init(struct arch_timer_kvm_info *info)
+{
+ struct irq_domain *domain = NULL;
+ struct fwnode_handle *fwnode;
+ struct irq_data *data;
Shouldn't this belong to patch #8?
+
+ if (info->virtual_irq <= 0) {
+ kvm_err("kvm_arch_timer: invalid virtual timer IRQ: %d\n",
+ info->virtual_irq);
+ return -ENODEV;
+ }
+
+ host_vtimer_irq = info->virtual_irq;
+ kvm_irq_fixup_flags(host_vtimer_irq, &host_vtimer_irq_flags);
+
+ if (info->physical_irq > 0) {
+ host_ptimer_irq = info->physical_irq;
+ kvm_irq_fixup_flags(host_ptimer_irq, &host_ptimer_irq_flags);
+ }
+
+ return 0;
+}
Otherwise this look like a good refactoring.
Zenghui
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