rt-thread/include/rtdef.h

/*
 * File      : rtdef.h
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://openlab.rt-thread.com/license/LICENSE.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2007-01-10     Bernard      the first version
 * 2008-07-12	  Bernard	   remove all rt_int8, rt_uint32_t etc typedef
 */
#ifndef __RT_DEF_H__
#define __RT_DEF_H__

#include <rtconfig.h>

#ifdef __cplusplus
extern "C" {
#endif

/* RT-Thread version information */
#define RT_VERSION						3
#define RT_SUBVERSION					0

/* date type defination					*/
typedef signed 	 char  					rt_int8_t;
typedef signed 	 short 					rt_int16_t;
typedef signed 	 long  					rt_int32_t;
typedef unsigned char  					rt_uint8_t;
typedef unsigned short 					rt_uint16_t;
typedef unsigned long  					rt_uint32_t;
typedef int 							rt_bool_t;

/* 32bit CPU */
typedef long 							rt_base_t;
typedef unsigned long 					rt_ubase_t;

/* RT-Thread definitions */
typedef rt_base_t						rt_err_t;		/* Type for error number.					*/
typedef rt_uint32_t						rt_time_t;		/* Type for time stamp. 					*/
typedef rt_uint32_t						rt_tick_t;		/* Type for tick count. 					*/
typedef rt_base_t						rt_flag_t;		/* Type for flags. 							*/
typedef rt_ubase_t						rt_size_t;		/* Type for size number.					*/
typedef rt_ubase_t						rt_dev_t;		/* Type for device.							*/
typedef rt_uint32_t						rt_off_t;		/* Type for offset.							*/

/* RT-Thread bool type definitions 		*/
#define RT_TRUE 						1
#define RT_FALSE 						0

/* maximun value of base type 			*/
#define RT_UINT8_MAX					0xff			/* Maxium number of UINT8.					*/
#define RT_UINT16_MAX					0xffff			/* Maxium number of UINT16.					*/
#define RT_UINT32_MAX					0xffffffff		/* Maxium number of UINT32.					*/

#ifdef __CC_ARM                			 /* ARM Compiler 	*/
    #include <stdarg.h>
    #define SECTION(x)  				__attribute__((section(x)))
    #define UNUSED  					__attribute__((unused))
	#define ALIGN(n)					__attribute__((aligned(n)))
    #define rt_inline   				static __inline

#elif defined (__ICCARM__)        		/* for IAR Compiler */
    #include <stdarg.h>
    #define SECTION(x)  				@ x
    #define UNUSED
	#define ALIGN(n)					#pragma pack(n)
    #define rt_inline 					inline

#elif defined (__GNUC__)        		/* GNU GCC Compiler */
    #ifdef RT_USING_NEWLIB
        #include <stdarg.h>
    #else
        typedef void *__sys_va_list;
        typedef __sys_va_list va_list;
        #define __va_rounded_size(type)	\
            (((sizeof (type) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
        #define va_start(ap, lastarg)	\
            (ap = ((char *) &(lastarg) + __va_rounded_size(lastarg)))
        #define va_end(ap)	((void)0)
        /*	little endian */
        #define va_arg(ap, type)	\
            (ap = (__sys_va_list) ((char *) (ap) + __va_rounded_size (type)),  \
            *((type *) (void *) ((char *) (ap) - __va_rounded_size (type))))
    #endif

    #define SECTION(x) 					__attribute__((section(x)))
    #define UNUSED 						__attribute__((unused))
	#define ALIGN(n)					__attribute__((aligned(n)))
    #define rt_inline 					static __inline
#endif

/* event length 			*/
#define RT_EVENT_LENGTH					32

/* memory management option */
#define RT_MM_PAGE_SIZE					4096
#define RT_MM_PAGE_MASK 				(RT_MM_PAGE_SIZE - 1)
#define RT_MM_PAGE_BITS					12

/**
 * @addtogroup Error
 */
/*@{*/
/* RT-Thread error code definitions */
#define RT_EOK							0				/* There is no error 						*/
#define RT_ERROR						1				/* A generic error happens 					*/
#define RT_ETIMEOUT						2				/* Timed out 								*/
#define RT_EFULL						3				/* The resource is full						*/
#define RT_EEMPTY						4				/* The resource is empty 					*/
#define RT_ENOMEM						5				/* No memory								*/
#define RT_ENOSYS						6				/* No system 								*/
#define RT_EBUSY						7				/* Busy										*/
/*@}*/

#ifdef RT_DEBUG
#define RT_ASSERT(EX)					if (!(EX)) {volatile char dummy=0; rt_kprintf("(%s) assert failed at %s:%d \n", \
										#EX, __FUNCTION__, __LINE__); while (dummy==0);}
#else
#define RT_ASSERT(EX)
#endif

/**
 * @def RT_ALIGN(size, align)
 * Return the most contiguous size aligned at specified width. RT_ALIGN(13, 4)
 * would equal to 16. It is needed in some critical contexts.
 */
#define RT_ALIGN(size, align)			(((size) + (align) - 1) & ~((align)-1))

/**
 * @def RT_NULL
 * Similar as the \c NULL in C library.
 */
#define RT_NULL 						((void *)0)

struct rt_list_node
{
	struct rt_list_node 				*next;			/* point to next node. 						*/
	struct rt_list_node 				*prev;			/* point to prev node. 						*/
};
typedef struct rt_list_node rt_list_t;					/* Type for lists. 							*/

/**
 * @addtogroup KernelObject
 */
/*@{*/
/*
 * Base structure of Kernel object
 */
struct rt_object
{
	/* name of kernel object			*/
	char      	name[RT_NAME_MAX];
	/* type of kernel object 			*/
	rt_uint8_t  type;
	/* flag of kernel object			*/
	rt_uint8_t  flag;
	/* list pointer of kernel object 	*/
	rt_list_t	list;
};
typedef struct rt_object* rt_object_t;					/* Type for kernel objects. 				*/

/**
 *	The object type can be one of the follows with specific
 *	macros enabled:
 *	- Thread
 *	- Process
 *	- Semaphore
 *	- Mutex
 *	- Event
 *	- MailBox
 *	- MessageQueue
 *	- MemPool
 *  - Device
 *	- Timer
 *	- Unknown
 *	- Static
 */
enum rt_object_class_type
{
	RT_Object_Class_Thread = 0,							/* The object is a thread. 					*/
#ifdef RT_USING_SEMAPHORE
	RT_Object_Class_Semaphore,							/* The object is a semaphore. 				*/
#endif
#ifdef RT_USING_MUTEX
	RT_Object_Class_Mutex,								/* The object is a mutex. 					*/
#endif
#ifdef RT_USING_EVENT
	RT_Object_Class_Event,								/* The object is a event. 					*/
#endif
#ifdef RT_USING_MAILBOX
	RT_Object_Class_MailBox,							/* The object is a mail box. 				*/
#endif
#ifdef RT_USING_MESSAGEQUEUE
	RT_Object_Class_MessageQueue,						/* The object is a message queue. 			*/
#endif
#ifdef RT_USING_MEMPOOL
	RT_Object_Class_MemPool,							/* The object is a memory pool. 			*/
#endif
#ifdef RT_USING_DEVICE
	RT_Object_Class_Device,								/* The object is a device 					*/
#endif
	RT_Object_Class_Timer,								/* The object is a timer. 					*/
#ifdef RT_USING_MODULE
	RT_Object_Class_Module,								/* The object is a module. 					*/
#endif
	RT_Object_Class_Unknown,							/* The object is unknown. 					*/
	RT_Object_Class_Static = 0x80						/* The object is a static object. 			*/
};

/*
 * the information of the kernel object
 */
struct rt_object_information
{
	enum rt_object_class_type type;						/* object class type. 						*/
	rt_list_t object_list;								/* object list. 							*/
	rt_size_t object_size;								/* object size. 							*/
};
/*@}*/

/**
 * @addtogroup Clock
 */
/*@{*/

/*
 * clock & timer macros
 */
#define RT_TIMER_FLAG_DEACTIVATED		0x0				/* timer is deactive. 						*/
#define RT_TIMER_FLAG_ACTIVATED			0x1				/* timer is active. 						*/
#define RT_TIMER_FLAG_ONE_SHOT			0x0				/* one shot timer. 							*/
#define RT_TIMER_FLAG_PERIODIC			0x2				/* periodic timer. 							*/

#define RT_TIMER_FLAG_HARD_TIMER		0x0				/* hard timer,the timer's callback function will be called in tick isr. 	*/
#define RT_TIMER_FLAG_SOFT_TIMER		0x4				/* soft timer,the timer's callback function will be called in timer thread. */

#define RT_TIMER_CTRL_SET_TIME			0x0				/* set timer. 								*/
#define RT_TIMER_CTRL_GET_TIME			0x1				/* get timer. 								*/
#define RT_TIMER_CTRL_SET_ONESHOT		0x2				/* change timer to one shot. 				*/
#define RT_TIMER_CTRL_SET_PERIODIC		0x3				/* change timer to periodic. 				*/

/*
 * timer structure
 *
 */
struct rt_timer
{
	struct rt_object parent;

	rt_list_t list;										/* the node of timer list. 					*/

	void (*timeout_func)(void* parameter);				/* timeout function. 						*/
	void *parameter;									/* timeout function's parameter. 			*/

	rt_tick_t init_tick;								/* timer timeout tick. 						*/
	rt_tick_t timeout_tick;								/* timeout tick. 							*/
};
typedef struct rt_timer* rt_timer_t;
/*@}*/

/**
 * @addtogroup Thread
 */
/*@{*/

/*
 * Thread
 */

/* thread state definitions */
#define RT_THREAD_RUNNING				0x0				/* Running. 								*/
#define RT_THREAD_READY					0x1				/* Ready. 									*/
#define RT_THREAD_SUSPEND				0x2				/* Suspend. 								*/
#define RT_THREAD_BLOCK					RT_THREAD_SUSPEND	/* Blocked. 							*/
#define RT_THREAD_CLOSE					0x3				/* Closed. 									*/
#define RT_THREAD_INIT					RT_THREAD_CLOSE	/* Inited. 									*/

#define RT_THREAD_FLAGS_TIMERSLICE 		0x01

#define RT_THREAD_CTRL_STARTUP			0x00			/* Starup thread. 							*/
#define RT_THREAD_CTRL_CLOSE			0x01			/* Close thread. 							*/
#define RT_THREAD_CTRL_CHANGE_PRIORITY	0x02			/* Change thread priority. 					*/
#define RT_THREAD_CTRL_INFO				0x03			/* Get thread information. 					*/

typedef struct rt_thread* rt_thread_t;
typedef struct rt_module* rt_module_t;

/*
 * Thread related structure
 */
struct rt_thread
{
	/* rt object */
	char        name[RT_NAME_MAX];						/* the name of thread 						*/
	rt_uint8_t	type;									/* type of object 							*/
	rt_uint8_t  flags;									/* thread's flags 							*/

	rt_list_t	list;									/* the object list 							*/

	rt_thread_t tid;									/* the thread id 							*/
	rt_list_t	tlist;									/* the thread list 							*/

	/* stack point and entry */
	void*		sp;										/* stack point 								*/
	void*		entry;									/* entry 									*/
	void*       parameter;								/* parameter 								*/
	void*       stack_addr;								/* stack address 							*/
	rt_uint16_t stack_size;								/* stack size 								*/

	/* error code */
	rt_err_t    error;									/* error code 								*/

	/* priority */
	rt_uint8_t	current_priority;						/* current priority 						*/
	rt_uint8_t	init_priority;							/* initialized priority 					*/
#if RT_THREAD_PRIORITY_MAX > 32
	rt_uint8_t 	number;
	rt_uint8_t	high_mask;
#endif
	rt_uint32_t	number_mask;

#if defined(RT_USING_EVENT)
	/* thread event */
	rt_uint32_t event_set;
	rt_uint8_t	event_info;
#endif

	rt_uint8_t	stat;									/* thread stat 								*/

	rt_ubase_t	init_tick;								/* thread's tick 							*/
	rt_ubase_t 	remaining_tick;							/* remaining tick 							*/

	struct rt_timer thread_timer;						/* thread timer 							*/

#ifdef RT_USING_MODULE
	rt_module_t module_parent;							/* module parent 							*/
#endif

	rt_uint32_t user_data;								/* user data 								*/
};
/*@}*/

#ifdef RT_USING_MODULE
struct rt_module
{
	/* inherit from object */
	struct rt_object parent;

	rt_uint32_t module_data;
	void* module_space;

	void* module_entry;
	rt_uint32_t stack_size;
	rt_uint32_t thread_priority;
	rt_thread_t module_thread;

	/* module memory pool */
	rt_uint32_t mempool_size;
	void* module_mempool;

	/* object in this module, module object is the last basic object type */
	struct rt_object_information module_object[RT_Object_Class_Module];
};
#endif

/**
 * @addtogroup IPC
 */
/*@{*/
/*
 * ipc & sync
 */
#define RT_IPC_FLAG_FIFO				0x00			/* FIFOed IPC. @ref IPC. 					*/
#define RT_IPC_FLAG_PRIO				0x01			/* PRIOed IPC. @ref IPC. 					*/

#define RT_WAITING_FOREVER				-1				/* Block forever until get resource.		*/
#define RT_WAITING_NO					0				/* Non-block. 								*/

/*
 * Base structure of IPC object
 */
struct rt_ipc_object
{
	struct rt_object parent;

	rt_list_t suspend_thread;							/* threads pended on this resource. 		*/
};

#ifdef RT_USING_SEMAPHORE
/*
 * semaphore
 *
 * Binary and counter semaphore are both supported.
 */
struct rt_semaphore
{
	struct rt_ipc_object parent;

	rt_ubase_t value;									/* value of semaphore. 						*/
};
typedef struct rt_semaphore* rt_sem_t;
#endif

#ifdef RT_USING_MUTEX
/*
 * mutex
 */
struct rt_mutex
{
	struct rt_ipc_object 	parent;

	rt_ubase_t 				value;						/* value of mutex. 							*/

	struct rt_thread		*owner;						/* current owner of mutex. 					*/
	rt_uint8_t 				original_priority;			/* priority of last thread hold the mutex. 	*/

	rt_ubase_t hold;			 						/* numbers of thread hold the mutex. 		*/
};
typedef struct rt_mutex* rt_mutex_t;
#endif

#if defined(RT_USING_EVENT)
#define RT_EVENT_FLAG_AND				0x01
#define RT_EVENT_FLAG_OR				0x02
#define RT_EVENT_FLAG_CLEAR				0x04
#endif

#ifdef RT_USING_EVENT
/*
 * event
 */
struct rt_event
{
	struct rt_ipc_object parent;

	rt_uint32_t set;									/* event set. 								*/
};
typedef struct rt_event* rt_event_t;
#endif

#ifdef RT_USING_MAILBOX
/*
 * mailbox
 *
 */
struct rt_mailbox
{
	struct rt_ipc_object parent;

	rt_uint32_t* msg_pool;							/* start address of message buffer. 			*/

	rt_size_t size;									/* size of message pool. 						*/

	rt_ubase_t entry;								/* index of messages in msg_pool. 				*/
	rt_ubase_t in_offset, out_offset;				/* in/output offset of the message buffer.		*/
};
typedef struct rt_mailbox* rt_mailbox_t;
#endif

#ifdef RT_USING_MESSAGEQUEUE
/*
 * messagequeue
 */
struct rt_messagequeue
{
	struct rt_ipc_object parent;

	void* msg_pool;									/* start address of message queue. 				*/

	rt_size_t msg_size;								/* message size of each message. 				*/
	rt_size_t max_msgs;								/* max number of messages. 						*/

	void* msg_queue_head;							/* list head. 									*/
	void* msg_queue_tail;							/* list tail. 									*/
	void* msg_queue_free;							/* pointer indicated the free node of queue. 	*/

	rt_ubase_t entry;								/* index of messages in the queue. 				*/
};
typedef struct rt_messagequeue* rt_mq_t;
#endif
/*@}*/

/**
 * @addtogroup MM
 */
/*@{*/
/*
 * memory management
 * heap & partition
 */
#ifdef RT_USING_MEMPOOL
/*
 * Base structure of Memory pool object
 */
struct rt_mempool
{
	struct rt_object parent;

	void		*start_address;						/* memory pool start 							*/
	rt_size_t 	size;								/* size of memory pool 							*/

	rt_size_t 	block_size;							/* size of memory blocks 						*/
	rt_uint8_t	*block_list;						/* memory blocks list 							*/

	rt_size_t 	block_total_count;					/* numbers of memory block 						*/
	rt_size_t 	block_free_count;					/* numbers of free memory block 				*/

	rt_list_t 	suspend_thread;						/* threads pended on this resource 				*/
	rt_size_t 	suspend_thread_count;				/* numbers of thread pended on this resource 	*/
};
typedef struct rt_mempool* rt_mp_t;
#endif
/*@}*/

#ifdef RT_USING_DEVICE
/**
 * @addtogroup Device
 */
/*@{*/

/*
 * device (I/O) system
 */
enum rt_device_class_type
{
	RT_Device_Class_Char = 0,						/* character device								*/
	RT_Device_Class_Block,							/* block device 								*/
	RT_Device_Class_NetIf,							/* net interface 								*/
	RT_Device_Class_MTD,							/* memory device 								*/
	RT_Device_Class_CAN,							/* CAN device 									*/
	RT_Device_Class_RTC,							/* RTC device 									*/
	RT_Device_Class_Sound,							/* Sound device 								*/
	RT_Device_Class_Unknown							/* unknown device 								*/
};

/* device flags */
#define RT_DEVICE_FLAG_DEACTIVATE		0x000		/* not inited 									*/

#define RT_DEVICE_FLAG_RDONLY			0x001		/* read only 									*/
#define RT_DEVICE_FLAG_WRONLY			0x002		/* write only 									*/
#define RT_DEVICE_FLAG_RDWR				0x003		/* read and write 								*/

#define RT_DEVICE_FLAG_REMOVABLE		0x004		/* removable device 							*/
#define RT_DEVICE_FLAG_STANDALONE		0x008		/* standalone device							*/
#define RT_DEVICE_FLAG_ACTIVATED		0x010		/* device is activated 							*/
#define RT_DEVICE_FLAG_SUSPENDED		0x020		/* device is suspended 							*/
#define RT_DEVICE_FLAG_STREAM			0x040		/* stream mode 									*/

#define RT_DEVICE_FLAG_INT_RX			0x100		/* INT mode on Rx 								*/
#define RT_DEVICE_FLAG_DMA_RX			0x200		/* DMA mode on Rx 								*/
#define RT_DEVICE_FLAG_INT_TX			0x400		/* INT mode on Tx 								*/
#define RT_DEVICE_FLAG_DMA_TX			0x800		/* DMA mode on Tx								*/

#define RT_DEVICE_OFLAG_CLOSE			0x000		/* device is closed 							*/
#define RT_DEVICE_OFLAG_RDONLY			0x001		/* read only access								*/
#define RT_DEVICE_OFLAG_WRONLY			0x002		/* write only access							*/
#define RT_DEVICE_OFLAG_RDWR			0x003		/* read and write 								*/
#define RT_DEVICE_OFLAG_OPEN			0x008		/* device is opened 							*/

/* general device commands */
#define RT_DEVICE_CTRL_RESUME	   		0x01		/* resume device 								*/
#define RT_DEVICE_CTRL_SUSPEND	    	0x02		/* suspend device 								*/

/* special device commands */
#define RT_DEVICE_CTRL_CHAR_STREAM		0x10		/* stream mode on char device 					*/
#define RT_DEVICE_CTRL_BLK_GETGEOME		0x10		/* get geometry information 					*/
#define RT_DEVICE_CTRL_NETIF_GETMAC		0x10		/* get mac address 								*/
#define RT_DEVICE_CTRL_MTD_FORMAT		0x10		/* format a MTD device 							*/
#define RT_DEVICE_CTRL_RTC_GET_TIME		0x10		/* get time 									*/
#define RT_DEVICE_CTRL_RTC_SET_TIME		0x11		/* set time 									*/

typedef struct rt_device* rt_device_t;
/*
 * Device related structure
 */
struct rt_device
{
	struct rt_object parent;

	/* device type */
	enum rt_device_class_type type;
	/* device flag and device open flag*/
	rt_uint16_t flag, open_flag;

	/* device call back */
	rt_err_t (*rx_indicate)(rt_device_t dev, rt_size_t size);
	rt_err_t (*tx_complete)(rt_device_t dev, void* buffer);

	/* common device interface */
	rt_err_t  (*init)	(rt_device_t dev);
	rt_err_t  (*open)	(rt_device_t dev, rt_uint16_t oflag);
	rt_err_t  (*close)	(rt_device_t dev);
	rt_size_t (*read)	(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size);
	rt_size_t (*write)	(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size);
	rt_err_t  (*control)(rt_device_t dev, rt_uint8_t cmd, void *args);

#ifdef RT_USING_DEVICE_SUSPEND
	rt_err_t (*suspend) (rt_device_t dev);
	rt_err_t (*resumed) (rt_device_t dev);
#endif

	/* device private data */
	void* private;
};

/*@}*/
#endif

#ifdef __cplusplus
}
#endif

#endif