arch: riscv: Support for Direct ISRs for RISCV targets (3cf2627d) · Commits · Wenxi XU / zephyr

arch/riscv/core/irq_manage.c

+17 −0

Changes for arch/riscv/core/irq_manage.c: 17 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -10,6 +10,7 @@
		#include <zephyr/arch/riscv/csr.h>
		#include <zephyr/irq_multilevel.h>
		#include <zephyr/sw_isr_table.h>
		#include <zephyr/pm/pm.h>

		#ifdef CONFIG_RISCV_HAS_PLIC
		#include <zephyr/drivers/interrupt_controller/riscv_plic.h>
		@@ -75,3 +76,19 @@ int arch_irq_disconnect_dynamic(unsigned int irq, unsigned int priority,
		}
		#endif /* CONFIG_SHARED_INTERRUPTS */
		#endif /* CONFIG_DYNAMIC_INTERRUPTS */

		#ifdef CONFIG_PM
		void arch_isr_direct_pm(void)
		{
		unsigned int key;

		key = irq_lock();

		if (_kernel.idle) {
		_kernel.idle = 0;
		pm_system_resume();
		}

		irq_unlock(key);
		}
		#endif

+15 −0

Changes for drivers/timer/nrf_grtc_timer.c: 15 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -459,12 +459,27 @@ uint32_t sys_clock_elapsed(void)
		return (uint32_t)(counter_sub(counter(), last_count) / CYC_PER_TICK);
		}

		#if !defined(CONFIG_GEN_SW_ISR_TABLE)
		ISR_DIRECT_DECLARE(nrfx_grtc_direct_irq_handler)
		{
		nrfx_grtc_irq_handler();
		ISR_DIRECT_PM();
		return 1;
		}
		#endif

		static int sys_clock_driver_init(void)
		{
		nrfx_err_t err_code;

		#if defined(CONFIG_GEN_SW_ISR_TABLE)
		IRQ_CONNECT(DT_IRQN(GRTC_NODE), DT_IRQ(GRTC_NODE, priority), nrfx_isr,
		nrfx_grtc_irq_handler, 0);
		#else
		IRQ_DIRECT_CONNECT(DT_IRQN(GRTC_NODE), DT_IRQ(GRTC_NODE, priority),
		nrfx_grtc_direct_irq_handler, 0);
		irq_enable(DT_IRQN(GRTC_NODE));
		#endif

		#if defined(CONFIG_NRF_GRTC_TIMER_CLOCK_MANAGEMENT) && NRF_GRTC_HAS_CLKSEL
		#if defined(CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC)

+9 −0

Changes for include/zephyr/arch/riscv/irq.h: 9 added lines, 0 removed lines.
Original line number	Diff line number	Diff line
		@@ -83,6 +83,15 @@ extern void z_riscv_irq_vector_set(unsigned int irq);
		z_riscv_irq_vector_set(irq_p); \
		}

		#ifdef CONFIG_PM
		extern void arch_isr_direct_pm(void);
		#define ARCH_ISR_DIRECT_PM() arch_isr_direct_pm()
		#else
		#define ARCH_ISR_DIRECT_PM() \
		do { \
		} while (false)
		#endif

		#define ARCH_ISR_DIRECT_HEADER() arch_isr_direct_header()
		#define ARCH_ISR_DIRECT_FOOTER(swap) arch_isr_direct_footer(swap)