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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [drivers/] [char/] [mbus.h] - Blame information for rev 1782

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Line No. Rev Author Line
1 199 simons
/************************************************************************/
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/*                                                                      */
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/*  mbus.h -   definitions for the mbus driver                          */
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/*                                                                      */
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/*                                                                      */
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/*  (C) Copyright 1999, Martin Floeer (mfloeer@axcent.de)               */      /*                                                                      */
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/*                                                                      */
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/************************************************************************/
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#ifndef __MBUS_H__
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#define __MBUS_H__
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#include <linux/ioctl.h>
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#ifndef MBUS_MAJOR
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#define MBUS_MAJOR 127          /*static definition of major nr.*/
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#endif
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#ifndef MBUS_NR_DEVS
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#define MBUS_NR_DEVS 1
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#endif
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#define count_t int
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#define read_write_t int
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#define MBUS_TRANSMIT 0x1
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#define MBUS_RECEIVE 0x0
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#define MBUS_MASTER 0x1
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#define MBUS_SLAVE 0x0
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volatile int            MBUS_STATE;             /*  1 = mbus busy */
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                                                /*  0 = mbus idle no errror */
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                                                /* -1 = mbus idle at last transfer arbitration lost */
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                                                /* -2 = mbus idle at last transfer no acknowledge receive */
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#define MBUS_STATE_BUSY                                 1
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#define MBUS_STATE_IDLE                                 0
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#define MBUS_STATE_ARBITRATION_LOST             -1
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#define MBUS_STATE_NO_ACKNOWLEDGE               -2
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volatile unsigned char                  MBUS_MODE;                      /* true = tranceive : false = receive */
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volatile unsigned char                          MBUS_DEST_ADDRESS_BUFFER;       /* Buffer for the slave_address */
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volatile unsigned char                  *MBUS_DATA;                             /* Pointer to data */
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volatile int                            MBUS_DATA_COUNT;                /* counter for data bytes */
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volatile int                            MBUS_DATA_NUMBER;
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void mbus_start(unsigned char address,unsigned char clock,char IRQ_LEVEL);
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/*
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slave_address: slave address
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dest_address: dest address
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*/
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extern void mbus_interrupt(int irq, void *dev_id, struct pt_regs *regs);
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extern void mbus_putchar(unsigned char slave_address, unsigned char dest_address, char *data);
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extern void mbus_getchar(unsigned char slave_address, unsigned char dest_address, char *data);
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extern void mbus_putchars(unsigned char slave_address, unsigned char dest_address, char *data, int number);
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typedef struct Mbus_Dev
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{
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        struct Mbus_Dev *next;
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        char *name;
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        unsigned int usage;
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} Mbus_Dev;
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extern int mbus_major;
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extern int mbus_nr_devs;
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extern struct file_operations mbus_fops;
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read_write_t mbus_read(struct inode *inode, struct file *filp, char *buf,
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count_t count);
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read_write_t mbus_write(struct inode *inode, struct file *filp, char *buf,
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count_t count);
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#define MBUS_BUSY mbus_busy_event()
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extern unsigned char mbus_busy_event(void);
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#endif /* __MBUS_H__ */
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