[deliverable/linux.git] / include / asm-mips / rtlx.h

/*
 * Copyright (C) 2004, 2005 MIPS Technologies, Inc.  All rights reserved.
 *
 */

#ifndef __ASM_RTLX_H
#define __ASM_RTLX_H_

#include <irq.h>

#define LX_NODE_BASE 10

#define MIPS_CPU_RTLX_IRQ 0

#define RTLX_VERSION 2
#define RTLX_xID 0x12345600
#define RTLX_ID (RTLX_xID | RTLX_VERSION)
#define RTLX_CHANNELS 8

#define RTLX_CHANNEL_STDIO	0
#define RTLX_CHANNEL_DBG	1
#define RTLX_CHANNEL_SYSIO	2

extern int rtlx_open(int index, int can_sleep);
extern int rtlx_release(int index);
extern ssize_t rtlx_read(int index, void __user *buff, size_t count);
extern ssize_t rtlx_write(int index, const void __user *buffer, size_t count);
extern unsigned int rtlx_read_poll(int index, int can_sleep);
extern unsigned int rtlx_write_poll(int index);

enum rtlx_state {
	RTLX_STATE_UNUSED,
	RTLX_STATE_INITIALISED,
	RTLX_STATE_REMOTE_READY,
	RTLX_STATE_OPENED
};

#define RTLX_BUFFER_SIZE 1024

/* each channel supports read and write.
   linux (vpe0) reads lx_buffer  and writes rt_buffer
   SP (vpe1) reads rt_buffer and writes lx_buffer
*/
struct rtlx_channel {
	enum rtlx_state rt_state;
	enum rtlx_state lx_state;

	int buffer_size;

	/* read and write indexes per buffer */
	int rt_write, rt_read;
	char *rt_buffer;

	int lx_write, lx_read;
	char *lx_buffer;
};

struct rtlx_info {
	unsigned long id;
	enum rtlx_state state;

	struct rtlx_channel channel[RTLX_CHANNELS];
};

#endif /* __ASM_RTLX_H_ */
Commit	Line	Data
e01402b1 RB	1	/*
	2	* Copyright (C) 2004, 2005 MIPS Technologies, Inc. All rights reserved.
	3	*
	4	*/
	5
2600990e RB	6	#ifndef __ASM_RTLX_H
2600990e RB	7	#define __ASM_RTLX_H_
e01402b1	8
97dcb82d AN	9	#include <irq.h>
97dcb82d AN	10
e01402b1 RB	11	#define LX_NODE_BASE 10
e01402b1 RB	12
e01402b1 RB	13	#define MIPS_CPU_RTLX_IRQ 0
e01402b1 RB	14
2600990e	15	#define RTLX_VERSION 2
e01402b1 RB	16	#define RTLX_xID 0x12345600
	17	#define RTLX_ID (RTLX_xID \| RTLX_VERSION)
	18	#define RTLX_CHANNELS 8
	19
2600990e RB	20	#define RTLX_CHANNEL_STDIO 0
	21	#define RTLX_CHANNEL_DBG 1
	22	#define RTLX_CHANNEL_SYSIO 2
afc4841d	23
2600990e RB	24	extern int rtlx_open(int index, int can_sleep);
2600990e RB	25	extern int rtlx_release(int index);
46230aa6 RB	26	extern ssize_t rtlx_read(int index, void __user *buff, size_t count);
46230aa6 RB	27	extern ssize_t rtlx_write(int index, const void __user *buffer, size_t count);
2600990e RB	28	extern unsigned int rtlx_read_poll(int index, int can_sleep);
	29	extern unsigned int rtlx_write_poll(int index);
	30
	31	enum rtlx_state {
	32	RTLX_STATE_UNUSED,
	33	RTLX_STATE_INITIALISED,
	34	RTLX_STATE_REMOTE_READY,
	35	RTLX_STATE_OPENED
	36	};
	37
	38	#define RTLX_BUFFER_SIZE 1024
afc4841d	39
e01402b1 RB	40	/* each channel supports read and write.
	41	linux (vpe0) reads lx_buffer and writes rt_buffer
	42	SP (vpe1) reads rt_buffer and writes lx_buffer
	43	*/
afc4841d	44	struct rtlx_channel {
2600990e RB	45	enum rtlx_state rt_state;
2600990e RB	46	enum rtlx_state lx_state;
e01402b1 RB	47
	48	int buffer_size;
	49
	50	/* read and write indexes per buffer */
	51	int rt_write, rt_read;
	52	char *rt_buffer;
	53
	54	int lx_write, lx_read;
	55	char *lx_buffer;
afc4841d	56	};
e01402b1	57
afc4841d	58	struct rtlx_info {
e01402b1	59	unsigned long id;
2600990e	60	enum rtlx_state state;
e01402b1 RB	61
e01402b1 RB	62	struct rtlx_channel channel[RTLX_CHANNELS];
afc4841d	63	};
e01402b1	64
2600990e	65	#endif /* __ASM_RTLX_H_ */