/*
 * Copyright (c) 2003-2008 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#ifndef _CHUD_XNU_H_
#define _CHUD_XNU_H_

#include <stdint.h>
#include <mach/boolean.h>
#include <mach/mach_types.h>
#include <kern/thread_call.h>

/* Unslide the provided pointer if it's a kernel address. */
static inline uint64_t
chudxnu_vm_unslide( uint64_t ptr, int kaddr )
{
	if( !kaddr )
		return ptr;

	return VM_KERNEL_UNSLIDE(ptr);
}

#if 0
#pragma mark **** version ****
#endif
extern uint32_t chudxnu_version(void);

#if 0
#pragma mark **** task ****
#endif
// ********************************************************************************
// task
// ********************************************************************************
extern task_t chudxnu_task_for_pid(int pid);
extern int chudxnu_pid_for_task(task_t task);
extern int chudxnu_current_pid(void);
extern task_t chudxnu_current_task(void);

extern kern_return_t chudxnu_task_read(task_t task, void *kernaddr, uint64_t usraddr, vm_size_t size);
extern kern_return_t chudxnu_task_write(task_t task, uint64_t useraddr, void *kernaddr, vm_size_t size);
extern kern_return_t chudxnu_kern_read(void *destaddr, vm_offset_t srcaddr, vm_size_t size);
extern kern_return_t chudxnu_kern_write(vm_offset_t destaddr, void *srcaddr, vm_size_t size);

extern boolean_t chudxnu_is_64bit_task(task_t task);

#if 0
#pragma mark **** thread ****
#endif
// ********************************************************************************
// thread
// ********************************************************************************
extern thread_t chudxnu_current_thread(void);
extern task_t chudxnu_task_for_thread(thread_t thread);

extern kern_return_t chudxnu_bind_thread(thread_t thread, int cpu, int options);
extern kern_return_t chudxnu_unbind_thread(thread_t thread, int options);

extern kern_return_t chudxnu_thread_get_state(thread_t thread, thread_flavor_t flavor, thread_state_t tstate, mach_msg_type_number_t *count, boolean_t user_only);
extern kern_return_t chudxnu_thread_set_state(thread_t thread, thread_flavor_t flavor, thread_state_t tstate, mach_msg_type_number_t count, boolean_t user_only);

extern kern_return_t chudxnu_thread_get_callstack64(thread_t thread, uint64_t *callStack, mach_msg_type_number_t *count, boolean_t user_only);
extern kern_return_t chudxnu_thread_get_callstack64_kperf(thread_t thread, uint64_t *callStack, mach_msg_type_number_t *count, boolean_t user_only);

extern kern_return_t chudxnu_all_tasks(task_array_t *task_list, mach_msg_type_number_t *count);
extern kern_return_t chudxnu_free_task_list(task_array_t *task_list, mach_msg_type_number_t	*count);
									 
extern kern_return_t chudxnu_all_threads(thread_array_t *thread_list, mach_msg_type_number_t *count);
extern kern_return_t chudxnu_task_threads(task_t task, thread_array_t *thread_list, mach_msg_type_number_t *count);
extern kern_return_t chudxnu_free_thread_list(thread_array_t *thread_list, mach_msg_type_number_t *count);

extern kern_return_t chudxnu_thread_info(  thread_t thread, thread_flavor_t flavor, thread_info_t thread_info_out, mach_msg_type_number_t *thread_info_count);

extern boolean_t chudxnu_thread_set_marked(thread_t thread, boolean_t marked);
extern boolean_t chudxnu_thread_get_marked(thread_t thread);
extern boolean_t chudxnu_thread_get_idle(thread_t thread);

enum {
	CHUDXNU_TS_RUNNING = 0x1,
	CHUDXNU_TS_RUNNABLE = 0x2,
	CHUDXNU_TS_WAIT = 0x4,
	CHUDXNU_TS_UNINT = 0x8,
	CHUDXNU_TS_SUSP = 0x10,
	CHUDXNU_TS_TERMINATE = 0x20,
	CHUDXNU_TS_IDLE = 0x40
};

extern int chudxnu_thread_get_scheduler_state(thread_t thread);

extern boolean_t chudxnu_thread_get_dirty(thread_t thread);
extern void chudxnu_thread_set_dirty(thread_t thread, boolean_t);

#if 0
#pragma mark **** memory ****
#endif
// ********************************************************************************
// memory
// ********************************************************************************

extern uint64_t chudxnu_avail_memory_size(void);
extern uint64_t chudxnu_phys_memory_size(void);
extern uint64_t chudxnu_free_memory_size(void);
extern uint64_t chudxnu_inactive_memory_size(void);

#if 0
#pragma mark **** cpu ****
#endif
// ********************************************************************************
// cpu
// ********************************************************************************
extern int chudxnu_logical_cpu_count(void);
extern int chudxnu_phys_cpu_count(void);
extern int chudxnu_cpu_number(void);

extern kern_return_t chudxnu_enable_cpu(int cpu, boolean_t enable);

extern boolean_t chudxnu_set_interrupts_enabled(boolean_t enable);
extern void chudxnu_cause_interrupt(void);

extern void chudxnu_enable_preemption(void);
extern void chudxnu_disable_preemption(void);
extern int chudxnu_get_preemption_level(void);

extern kern_return_t chudxnu_perfmon_acquire_facility(task_t);
extern kern_return_t chudxnu_perfmon_release_facility(task_t);

typedef struct {
    uint32_t hwResets;
    uint32_t hwMachineChecks;
    uint32_t hwDSIs;
    uint32_t hwISIs;
    uint32_t hwExternals;
    uint32_t hwAlignments;
    uint32_t hwPrograms;
    uint32_t hwFloatPointUnavailable;
    uint32_t hwDecrementers;
    uint32_t hwIOErrors;
    uint32_t hwSystemCalls;
    uint32_t hwTraces;
    uint32_t hwFloatingPointAssists;
    uint32_t hwPerformanceMonitors;
    uint32_t hwAltivecs;
    uint32_t hwInstBreakpoints;
    uint32_t hwSystemManagements;
    uint32_t hwAltivecAssists;
    uint32_t hwThermal;
    uint32_t hwSoftPatches;
    uint32_t hwMaintenances;
    uint32_t hwInstrumentations;
} interrupt_counters_t;

extern kern_return_t chudxnu_get_cpu_interrupt_counters(int cpu, interrupt_counters_t *rupts);
extern kern_return_t chudxnu_clear_cpu_interrupt_counters(int cpu);

#if 0
#pragma mark **** callbacks ****
#endif
// ********************************************************************************
// callbacks
// ********************************************************************************

extern void chudxnu_cancel_all_callbacks(void);

// cpu timer - each cpu has its own callback 
typedef kern_return_t (*chudxnu_cpu_timer_callback_func_t)(thread_flavor_t flavor, thread_state_t tstate,  mach_msg_type_number_t count);
extern kern_return_t chudxnu_cpu_timer_callback_enter(chudxnu_cpu_timer_callback_func_t func, uint32_t time, uint32_t units); // callback is entered on current cpu
extern kern_return_t chudxnu_cpu_timer_callback_cancel(void); // callback is cleared on current cpu
extern kern_return_t chudxnu_cpu_timer_callback_cancel_all(void); // callback is cleared on all cpus

enum {
    PPC_TRAP_PROGRAM		= 0x700,
    PPC_TRAP_TRACE		= 0xD00,
    PPC_TRAP_PERFMON		= 0xF00,
};

enum {
	X86_TRAP_DEBUG			= 0x1,
};

// trap callback - one callback for system
typedef kern_return_t (*chudxnu_trap_callback_func_t)(uint32_t trapentry, thread_flavor_t flavor, thread_state_t tstate,  mach_msg_type_number_t count);
extern kern_return_t chudxnu_trap_callback_enter(chudxnu_trap_callback_func_t func);
extern kern_return_t chudxnu_trap_callback_cancel(void);

enum {
    PPC_INTERRUPT_DECREMENTER	= 0x900,
    PPC_INTERRUPT_INTERRUPT	= 0x500,
    PPC_INTERRUPT_CPU_SIGNAL	= 0x2200,
};

enum {
    X86_INTERRUPT_PERFMON	= 0xB,
};

// interrupt callback - one callback for system
typedef kern_return_t (*chudxnu_interrupt_callback_func_t)(uint32_t trapentry, thread_flavor_t flavor, thread_state_t tstate,  mach_msg_type_number_t count);
extern kern_return_t chudxnu_interrupt_callback_enter(chudxnu_interrupt_callback_func_t func);
extern kern_return_t chudxnu_interrupt_callback_cancel(void);

// ast callback - one callback for system
typedef kern_return_t (*chudxnu_perfmon_ast_callback_func_t)(thread_flavor_t flavor, thread_state_t tstate,  mach_msg_type_number_t count);
extern kern_return_t chudxnu_perfmon_ast_callback_enter(chudxnu_perfmon_ast_callback_func_t func);
extern kern_return_t chudxnu_perfmon_ast_callback_cancel(void);
extern kern_return_t chudxnu_perfmon_ast_send_urgent(boolean_t urgent);

// cpusig callback - one callback for system
typedef kern_return_t (*chudxnu_cpusig_callback_func_t)(int request, thread_flavor_t flavor, thread_state_t tstate, mach_msg_type_number_t count);
extern kern_return_t chudxnu_cpusig_callback_enter(chudxnu_cpusig_callback_func_t func);
extern kern_return_t chudxnu_cpusig_callback_cancel(void);
extern kern_return_t chudxnu_cpusig_send(int otherCPU, uint32_t request);

// kdebug callback - one callback for system
typedef kern_return_t (*chudxnu_kdebug_callback_func_t)(uint32_t debugid, uintptr_t arg0, uintptr_t arg1, uintptr_t arg2, uintptr_t arg3, uintptr_t arg4);
extern kern_return_t chudxnu_kdebug_callback_enter(chudxnu_kdebug_callback_func_t func);
extern kern_return_t chudxnu_kdebug_callback_cancel(void);

// timer callback - multiple callbacks
typedef kern_return_t (*chudxnu_timer_callback_func_t)(thread_call_param_t param0, thread_call_param_t param1);
typedef void *	chud_timer_t;
extern chud_timer_t chudxnu_timer_alloc(chudxnu_timer_callback_func_t func, thread_call_param_t param0);
extern kern_return_t chudxnu_timer_callback_enter(chud_timer_t timer, thread_call_param_t param1, uint32_t time, uint32_t units);
extern kern_return_t chudxnu_timer_callback_cancel(chud_timer_t timer);
extern kern_return_t chudxnu_timer_free(chud_timer_t timer);

// CHUD systemcall callback - one callback for system
typedef kern_return_t (*chudxnu_syscall_callback_func_t)(uint64_t code, uint64_t arg1, uint64_t arg2, uint64_t arg3, uint64_t arg4, uint64_t arg5);
extern kern_return_t chudxnu_syscall_callback_enter(chudxnu_syscall_callback_func_t func);
extern kern_return_t chudxnu_syscall_callback_cancel(void);

// DTrace Triggering
typedef kern_return_t (*chudxnu_dtrace_callback_t)(uint64_t selector, uint64_t *args, uint32_t count);
extern int chudxnu_dtrace_callback(uint64_t selector, uint64_t *args, uint32_t count);
extern kern_return_t chudxnu_dtrace_callback_enter(chudxnu_dtrace_callback_t fn);
extern void chudxnu_dtrace_callback_cancel(void);

// ********************************************************************************
// DEPRECATED
// ********************************************************************************
extern kern_return_t chudxnu_thread_get_callstack(thread_t thread, uint32_t *callStack, mach_msg_type_number_t *count, boolean_t user_only);

extern kern_return_t chudxnu_set_shadowed_spr(int cpu, int spr, uint32_t val);
extern kern_return_t chudxnu_set_shadowed_spr64(int cpu, int spr, uint64_t val);

extern kern_return_t chudxnu_enable_cpu_nap(int cpu, boolean_t enable);
extern boolean_t chudxnu_cpu_nap_enabled(int cpu);

extern kern_return_t chudxnu_read_spr(int cpu, int spr, uint32_t *val_p);
extern kern_return_t chudxnu_read_spr64(int cpu, int spr, uint64_t *val_p);
extern kern_return_t chudxnu_write_spr(int cpu, int spr, uint32_t val);
extern kern_return_t chudxnu_write_spr64(int cpu, int spr, uint64_t val);

#endif /* _CHUD_XNU_H_ */