/* * Copyright (c) 2016 Intel Corporation * * SPDX-License-Identifier: Apache-2.0 */ /** * @file * @brief Nios II C-domain interrupt management code for use with Internal * Interrupt Controller (IIC) */ #include #include #include #include #include #include #include #include #include LOG_MODULE_DECLARE(os, CONFIG_KERNEL_LOG_LEVEL); FUNC_NORETURN void z_irq_spurious(const void *unused) { ARG_UNUSED(unused); LOG_ERR("Spurious interrupt detected! ipending: %x", z_nios2_creg_read(NIOS2_CR_IPENDING)); z_nios2_fatal_error(K_ERR_SPURIOUS_IRQ, NULL); } void arch_irq_enable(unsigned int irq) { uint32_t ienable; unsigned int key; key = irq_lock(); ienable = z_nios2_creg_read(NIOS2_CR_IENABLE); ienable |= BIT(irq); z_nios2_creg_write(NIOS2_CR_IENABLE, ienable); irq_unlock(key); }; void arch_irq_disable(unsigned int irq) { uint32_t ienable; unsigned int key; key = irq_lock(); ienable = z_nios2_creg_read(NIOS2_CR_IENABLE); ienable &= ~BIT(irq); z_nios2_creg_write(NIOS2_CR_IENABLE, ienable); irq_unlock(key); }; int arch_irq_is_enabled(unsigned int irq) { uint32_t ienable; ienable = z_nios2_creg_read(NIOS2_CR_IENABLE); return ienable & BIT(irq); } /** * @brief Interrupt demux function * * Given a bitfield of pending interrupts, execute the appropriate handler * * @param ipending Bitfield of interrupts */ void _enter_irq(uint32_t ipending) { int index; _kernel.cpus[0].nested++; #ifdef CONFIG_IRQ_OFFLOAD z_irq_do_offload(); #endif while (ipending) { struct _isr_table_entry *ite; #ifdef CONFIG_TRACING_ISR sys_trace_isr_enter(); #endif index = find_lsb_set(ipending) - 1; ipending &= ~BIT(index); ite = &_sw_isr_table[index]; ite->isr(ite->arg); #ifdef CONFIG_TRACING_ISR sys_trace_isr_exit(); #endif } _kernel.cpus[0].nested--; #ifdef CONFIG_STACK_SENTINEL z_check_stack_sentinel(); #endif } #ifdef CONFIG_DYNAMIC_INTERRUPTS int arch_irq_connect_dynamic(unsigned int irq, unsigned int priority, void (*routine)(const void *parameter), const void *parameter, uint32_t flags) { ARG_UNUSED(flags); ARG_UNUSED(priority); z_isr_install(irq, routine, parameter); return irq; } #endif /* CONFIG_DYNAMIC_INTERRUPTS */