mirror of
https://github.com/Ysurac/openmptcprouter.git
synced 2025-03-09 15:40:20 +00:00
72 lines
1.9 KiB
Diff
72 lines
1.9 KiB
Diff
From 677b7d43ae442e9b3ddddcd55456d74d5048af2b Mon Sep 17 00:00:00 2001
|
|
From: Michael Zoran <mzoran@crowfest.net>
|
|
Date: Sat, 14 Jan 2017 21:43:57 -0800
|
|
Subject: [PATCH] ARM64: Round-Robin dispatch IRQs between CPUs.
|
|
|
|
IRQ-CPU mapping is round robined on ARM64 to increase
|
|
concurrency and allow multiple interrupts to be serviced
|
|
at a time. This reduces the need for FIQ.
|
|
|
|
Signed-off-by: Michael Zoran <mzoran@crowfest.net>
|
|
---
|
|
drivers/irqchip/irq-bcm2835.c | 15 ++++++++++++++-
|
|
drivers/irqchip/irq-bcm2836.c | 21 +++++++++++++++++++++
|
|
2 files changed, 35 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/irqchip/irq-bcm2835.c
|
|
+++ b/drivers/irqchip/irq-bcm2835.c
|
|
@@ -154,10 +154,23 @@ static void armctrl_unmask_irq(struct ir
|
|
}
|
|
}
|
|
|
|
+#ifdef CONFIG_ARM64
|
|
+void bcm2836_arm_irqchip_spin_gpu_irq(void);
|
|
+
|
|
+static void armctrl_ack_irq(struct irq_data *d)
|
|
+{
|
|
+ bcm2836_arm_irqchip_spin_gpu_irq();
|
|
+}
|
|
+
|
|
+#endif
|
|
+
|
|
static struct irq_chip armctrl_chip = {
|
|
.name = "ARMCTRL-level",
|
|
.irq_mask = armctrl_mask_irq,
|
|
- .irq_unmask = armctrl_unmask_irq
|
|
+ .irq_unmask = armctrl_unmask_irq,
|
|
+#ifdef CONFIG_ARM64
|
|
+ .irq_ack = armctrl_ack_irq
|
|
+#endif
|
|
};
|
|
|
|
static int armctrl_xlate(struct irq_domain *d, struct device_node *ctrlr,
|
|
--- a/drivers/irqchip/irq-bcm2836.c
|
|
+++ b/drivers/irqchip/irq-bcm2836.c
|
|
@@ -87,6 +87,27 @@ static void bcm2836_arm_irqchip_unmask_g
|
|
{
|
|
}
|
|
|
|
+#ifdef CONFIG_ARM64
|
|
+
|
|
+void bcm2836_arm_irqchip_spin_gpu_irq(void)
|
|
+{
|
|
+ u32 i;
|
|
+ void __iomem *gpurouting = (intc.base + LOCAL_GPU_ROUTING);
|
|
+ u32 routing_val = readl(gpurouting);
|
|
+
|
|
+ for (i = 1; i <= 3; i++) {
|
|
+ u32 new_routing_val = (routing_val + i) & 3;
|
|
+
|
|
+ if (cpu_active(new_routing_val)) {
|
|
+ writel(new_routing_val, gpurouting);
|
|
+ return;
|
|
+ }
|
|
+ }
|
|
+}
|
|
+EXPORT_SYMBOL(bcm2836_arm_irqchip_spin_gpu_irq);
|
|
+
|
|
+#endif
|
|
+
|
|
static struct irq_chip bcm2836_arm_irqchip_gpu = {
|
|
.name = "bcm2836-gpu",
|
|
.irq_mask = bcm2836_arm_irqchip_mask_gpu_irq,
|