diff options
| -rw-r--r-- | arch/microblaze/Kconfig | 2 | ||||
| -rw-r--r-- | arch/microblaze/include/asm/irq.h | 3 | ||||
| -rw-r--r-- | arch/microblaze/kernel/irq.c | 21 | ||||
| -rw-r--r-- | drivers/irqchip/irq-xilinx-intc.c | 35 |
4 files changed, 38 insertions, 23 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 242f58ec086b..6a331bd57ea8 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -47,8 +47,6 @@ config MICROBLAZE select CPU_NO_EFFICIENT_FFS select MMU_GATHER_NO_RANGE if MMU select SPARSE_IRQ - select GENERIC_IRQ_MULTI_HANDLER - select HANDLE_DOMAIN_IRQ # Endianness selection choice diff --git a/arch/microblaze/include/asm/irq.h b/arch/microblaze/include/asm/irq.h index 5166f0893e2b..eac2fb4b3fb9 100644 --- a/arch/microblaze/include/asm/irq.h +++ b/arch/microblaze/include/asm/irq.h @@ -14,4 +14,7 @@ struct pt_regs; extern void do_IRQ(struct pt_regs *regs); +/* should be defined in each interrupt controller driver */ +extern unsigned int xintc_get_irq(void); + #endif /* _ASM_MICROBLAZE_IRQ_H */ diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c index 0b37dde60a1e..903dad822fad 100644 --- a/arch/microblaze/kernel/irq.c +++ b/arch/microblaze/kernel/irq.c @@ -20,10 +20,29 @@ #include <linux/irqchip.h> #include <linux/of_irq.h> +static u32 concurrent_irq; + void __irq_entry do_IRQ(struct pt_regs *regs) { + unsigned int irq; + struct pt_regs *old_regs = set_irq_regs(regs); trace_hardirqs_off(); - handle_arch_irq(regs); + + irq_enter(); + irq = xintc_get_irq(); +next_irq: + BUG_ON(!irq); + generic_handle_irq(irq); + + irq = xintc_get_irq(); + if (irq != -1U) { + pr_debug("next irq: %d\n", irq); + ++concurrent_irq; + goto next_irq; + } + + irq_exit(); + set_irq_regs(old_regs); trace_hardirqs_on(); } diff --git a/drivers/irqchip/irq-xilinx-intc.c b/drivers/irqchip/irq-xilinx-intc.c index 7f811fe5bf69..1d3d273309bd 100644 --- a/drivers/irqchip/irq-xilinx-intc.c +++ b/drivers/irqchip/irq-xilinx-intc.c @@ -124,6 +124,20 @@ static unsigned int xintc_get_irq_local(struct xintc_irq_chip *irqc) return irq; } +unsigned int xintc_get_irq(void) +{ + unsigned int irq = -1; + u32 hwirq; + + hwirq = xintc_read(primary_intc, IVR); + if (hwirq != -1U) + irq = irq_find_mapping(primary_intc->root_domain, hwirq); + + pr_debug("irq-xilinx: hwirq=%d, irq=%d\n", hwirq, irq); + + return irq; +} + static int xintc_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) { struct xintc_irq_chip *irqc = d->host_data; @@ -163,25 +177,6 @@ static void xil_intc_irq_handler(struct irq_desc *desc) chained_irq_exit(chip, desc); } -static void xil_intc_handle_irq(struct pt_regs *regs) -{ - u32 hwirq; - struct xintc_irq_chip *irqc = primary_intc; - - do { - hwirq = xintc_read(irqc, IVR); - if (likely(hwirq != -1U)) { - int ret; - - ret = handle_domain_irq(irqc->root_domain, hwirq, regs); - WARN_ONCE(ret, "Unhandled HWIRQ %d\n", hwirq); - continue; - } - - break; - } while (1); -} - static int __init xilinx_intc_of_init(struct device_node *intc, struct device_node *parent) { @@ -250,7 +245,7 @@ static int __init xilinx_intc_of_init(struct device_node *intc, } } else { primary_intc = irqc; - set_handle_irq(xil_intc_handle_irq); + irq_set_default_host(primary_intc->root_domain); } return 0; |