kernel: add header files

include/kernel/cpu.h

@@ -0,0 +1,65 @@
+#ifndef KERNEL_CPU_H_
+#define KERNEL_CPU_H_
+
+#include <kernel/types.h>
+#include <kernel/machine/cpu.h>
+#include <stdint.h>
+#include <kernel/sched.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum cpu_flags {
+	CPU_ONLINE = 0x01u,
+};
+
+struct cpu_data {
+	enum cpu_flags c_flags;
+	unsigned int c_id;
+	int c_preempt_count;
+
+	struct runqueue c_rq;
+	struct workqueue c_wq;
+	struct queue c_timers;
+};
+
+/* maximum number of processor cores that the kernel can support.
+   TODO move to build config option */
+#define CPU_MAX 128
+
+#define this_cpu() (ml_cpu_block_get_id(ml_this_cpu()))
+
+extern struct cpu_data *get_this_cpu(void);
+extern struct cpu_data *get_cpu(unsigned int id);
+extern void put_cpu(struct cpu_data *cpu);
+
+extern bool cpu_is_available(unsigned int cpu_id);
+extern bool cpu_is_online(unsigned int cpu_id);
+
+extern void cpu_set_available(unsigned int cpu_id);
+extern void cpu_set_online(unsigned int cpu_id);
+
+extern unsigned int cpu_nr_available(void);
+extern unsigned int cpu_nr_online(void);
+
+extern cycles_t get_cycles(void);
+static inline cycles_t cycles_diff(cycles_t then, cycles_t now)
+{
+	return now >= then ? now - then : (CYCLES_MAX - then) + now;
+}
+
+#define irq_enable() ml_int_enable()
+#define irq_disable() ml_int_disable()
+
+extern void preempt_disable(void);
+extern void preempt_enable(void);
+extern int preempt_count(void);
+
+extern unsigned int cpu_get_highest_available(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif