diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0093-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0093-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0093-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch b/target/linux/brcm2708/patches-4.19/950-0093-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch deleted file mode 100644 index 235a72fe25..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0093-ARM64-Round-Robin-dispatch-IRQs-between-CPUs.patch +++ /dev/null @@ -1,72 +0,0 @@ -From 3a9f3c695a95d3c34a360e9a95bccce37806c952 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 -@@ -162,10 +162,23 @@ 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 -@@ -95,6 +95,27 @@ 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, |