1 // SPDX-License-Identifier: GPL-2.0+
8 #include <linux/cpu.h>
14 #include <linux/irqchip/irq-bcm2836.h>
23 static struct bcm2836_arm_irqchip_intc intc  __read_mostly;
27 						 int cpu)  in bcm2836_arm_irqchip_mask_per_cpu_irq()  argument
29 	void __iomem *reg = intc.base + reg_offset + 4 * cpu;  in bcm2836_arm_irqchip_mask_per_cpu_irq()
36 						 int cpu)  in bcm2836_arm_irqchip_unmask_per_cpu_irq()  argument
38 	void __iomem *reg = intc.base + reg_offset + 4 * cpu;  in bcm2836_arm_irqchip_unmask_per_cpu_irq()
46 					     d->hwirq - LOCAL_IRQ_CNTPSIRQ,  in bcm2836_arm_irqchip_mask_timer_irq()
53 					       d->hwirq - LOCAL_IRQ_CNTPSIRQ,  in bcm2836_arm_irqchip_unmask_timer_irq()
58 	.name		= "bcm2836-timer",
65 	writel(1 << smp_processor_id(), intc.base + LOCAL_PM_ROUTING_CLR);  in bcm2836_arm_irqchip_mask_pmu_irq()
70 	writel(1 << smp_processor_id(), intc.base + LOCAL_PM_ROUTING_SET);  in bcm2836_arm_irqchip_unmask_pmu_irq()
74 	.name		= "bcm2836-pmu",
88 	.name		= "bcm2836-gpu",
98 	.name		= "bcm2836-dummy",
125 		return -EINVAL;  in bcm2836_map()
129 	irq_domain_set_info(d, irq, hw, chip, d->host_data,  in bcm2836_map()
139 	int cpu = smp_processor_id();  in bcm2836_arm_irqchip_handle_irq()  local
142 	stat = readl_relaxed(intc.base + LOCAL_IRQ_PENDING0 + 4 * cpu);  in bcm2836_arm_irqchip_handle_irq()
144 		u32 hwirq = ffs(stat) - 1;  in bcm2836_arm_irqchip_handle_irq()
146 		generic_handle_domain_irq(intc.domain, hwirq);  in bcm2836_arm_irqchip_handle_irq()
156 	int cpu = smp_processor_id();  in bcm2836_arm_irqchip_handle_ipi()  local
161 	mbox_val = readl_relaxed(intc.base + LOCAL_MAILBOX0_CLR0 + 16 * cpu);  in bcm2836_arm_irqchip_handle_ipi()
163 		int hwirq = ffs(mbox_val) - 1;  in bcm2836_arm_irqchip_handle_ipi()
172 	int cpu = smp_processor_id();  in bcm2836_arm_irqchip_ipi_ack()  local
174 	writel_relaxed(BIT(d->hwirq),  in bcm2836_arm_irqchip_ipi_ack()
175 		       intc.base + LOCAL_MAILBOX0_CLR0 + 16 * cpu);  in bcm2836_arm_irqchip_ipi_ack()
181 	int cpu;  in bcm2836_arm_irqchip_ipi_send_mask()  local
182 	void __iomem *mailbox0_base = intc.base + LOCAL_MAILBOX0_SET0;  in bcm2836_arm_irqchip_ipi_send_mask()
190 	for_each_cpu(cpu, mask)  in bcm2836_arm_irqchip_ipi_send_mask()
191 		writel_relaxed(BIT(d->hwirq), mailbox0_base + 16 * cpu);  in bcm2836_arm_irqchip_ipi_send_mask()
211 				    d->host_data,  in bcm2836_arm_irqchip_ipi_alloc()
231 static int bcm2836_cpu_starting(unsigned int cpu)  in bcm2836_cpu_starting()  argument
234 					       cpu);  in bcm2836_cpu_starting()
238 static int bcm2836_cpu_dying(unsigned int cpu)  in bcm2836_cpu_dying()  argument
241 					     cpu);  in bcm2836_cpu_dying()
250 		.fwnode		= intc.domain->fwnode,  in bcm2836_arm_irqchip_smp_init()
262 	ipi_domain = irq_domain_create_linear(intc.domain->fwnode,  in bcm2836_arm_irqchip_smp_init()
268 	ipi_domain->flags |= IRQ_DOMAIN_FLAG_IPI_SINGLE;  in bcm2836_arm_irqchip_smp_init()
280 	/* Unmask IPIs to the boot CPU. */  in bcm2836_arm_irqchip_smp_init()
306 	writel(0, intc.base + LOCAL_CONTROL);  in bcm2835_init_local_timer_frequency()
312 	writel(0x80000000, intc.base + LOCAL_PRESCALER);  in bcm2835_init_local_timer_frequency()
318 	intc.base = of_iomap(node, 0);  in bcm2836_arm_irqchip_l1_intc_of_init()
319 	if (!intc.base) {  in bcm2836_arm_irqchip_l1_intc_of_init()
325 	intc.domain = irq_domain_add_linear(node, LAST_IRQ + 1,  in bcm2836_arm_irqchip_l1_intc_of_init()
328 	if (!intc.domain)  in bcm2836_arm_irqchip_l1_intc_of_init()
331 	irq_domain_update_bus_token(intc.domain, DOMAIN_BUS_WIRED);  in bcm2836_arm_irqchip_l1_intc_of_init()
339 IRQCHIP_DECLARE(bcm2836_arm_irqchip_l1_intc, "brcm,bcm2836-l1-intc",