添加rtthread相关代码

riscv/rtthread/components/drivers/pic/pic_rthw.c

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-08-24     GuEe-GUI     first version
+ */
+
+#include <rtthread.h>
+#include <rtdevice.h>
+
+/**
+ * This function will initialize hardware interrupt
+ */
+void rt_hw_interrupt_init(void)
+{
+    /* initialize pic */
+    rt_pic_irq_init();
+}
+
+/**
+ * This function will mask a interrupt.
+ * @param vector the interrupt number
+ */
+void rt_hw_interrupt_mask(int vector)
+{
+    rt_pic_irq_mask(vector);
+}
+
+/**
+ * This function will un-mask a interrupt.
+ * @param vector the interrupt number
+ */
+void rt_hw_interrupt_umask(int vector)
+{
+    rt_pic_irq_unmask(vector);
+}
+
+/**
+ * This function will install a interrupt service routine to a interrupt.
+ * @param vector the interrupt number
+ * @param new_handler the interrupt service routine to be installed
+ * @param old_handler the old interrupt service routine
+ */
+rt_isr_handler_t rt_hw_interrupt_install(int vector, rt_isr_handler_t handler,
+        void *param, const char *name)
+{
+    rt_pic_attach_irq(vector, handler, param, name, RT_IRQ_F_NONE);
+
+    return RT_NULL;
+}
+
+/**
+ * This function will install a interrupt service routine to a interrupt.
+ * @param vector the interrupt number
+ * @param new_handler the interrupt service routine to be installed
+ * @param old_handler the old interrupt service routine
+ */
+void rt_hw_interrupt_uninstall(int vector, rt_isr_handler_t handler, void *param)
+{
+    rt_pic_detach_irq(vector, param);
+}
+
+#if defined(RT_USING_SMP) || defined(RT_USING_AMP)
+void rt_hw_ipi_send(int ipi_vector, unsigned int cpu_mask)
+{
+    RT_BITMAP_DECLARE(cpu_masks, RT_CPUS_NR) = { cpu_mask };
+
+    rt_pic_irq_send_ipi(ipi_vector, cpu_masks);
+}
+
+void rt_hw_ipi_handler_install(int ipi_vector, rt_isr_handler_t ipi_isr_handler)
+{
+    /* note: ipi_vector maybe different with irq_vector */
+    rt_hw_interrupt_install(ipi_vector, ipi_isr_handler, 0, "IPI_HANDLER");
+}
+#endif