busmouse.h

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#ifndef _LINUX_BUSMOUSE_H
#define _LINUX_BUSMOUSE_H

/**
*

 * linux/include/linux/mouse.h: header file for Logitech Bus Mouse driver
 * by James Banks
 *
 * based on information gleamed from various mouse drivers on the net
 *
 * Heavily modified by David giller (rafetmad@oxy.edu)
 *
 * Minor modifications for Linux 0.96c-pl1 by Nathan Laredo
 * gt7080a@prism.gatech.edu (13JUL92)
 *
 * Microsoft BusMouse support by Teemu Rantanen (tvr@cs.hut.fi) (02AUG92)
 *
 * Microsoft Bus Mouse support modified by Derrick Cole (cole@concert.net)
 *    8/28/92
 *
 * Microsoft Bus Mouse support folded into 0.97pl4 code
 *    by Peter Cervasio (pete%q106fm.uucp@wupost.wustl.edu) (08SEP92)
 * Changes:  Logitech and Microsoft support in the same kernel.
 *           Defined new constants in busmouse.h for MS mice.
 *           Added int mse_busmouse_type to distinguish busmouse types
 *           Added a couple of new functions to handle differences in using
 *             MS vs. Logitech (where the int variable wasn't appropriate).
 *


*/

#define MOUSE_IRQ               5
#define LOGITECH_BUSMOUSE       0   ///< Minor device # for Logitech  
#define MICROSOFT_BUSMOUSE      2   ///< Minor device # for Microsoft 

///--------- LOGITECH BUSMOUSE ITEMS -------------

#define MSE_DATA_PORT           0x23c
#define MSE_SIGNATURE_PORT      0x23d
#define MSE_CONTROL_PORT        0x23e
#define MSE_INTERRUPT_PORT      0x23e
#define MSE_CONFIG_PORT         0x23f

#define MSE_ENABLE_INTERRUPTS   0x00
#define MSE_DISABLE_INTERRUPTS  0x10

#define MSE_READ_X_LOW          0x80
#define MSE_READ_X_HIGH         0xa0
#define MSE_READ_Y_LOW          0xc0
#define MSE_READ_Y_HIGH         0xe0

/// Magic number used to check if the mouse exists 
#define MSE_CONFIG_BYTE         0x91
#define MSE_DEFAULT_MODE        0x90
#define MSE_SIGNATURE_BYTE      0xa5

/// useful Logitech Mouse macros 

#define MSE_INT_OFF()   outb(MSE_DISABLE_INTERRUPTS, MSE_CONTROL_PORT)
#define MSE_INT_ON()    outb(MSE_ENABLE_INTERRUPTS, MSE_CONTROL_PORT)

///--------- MICROSOFT BUSMOUSE ITEMS -------------

#define MS_MSE_DATA_PORT                0x23d
#define MS_MSE_SIGNATURE_PORT           0x23e
#define MS_MSE_CONTROL_PORT             0x23c
#define MS_MSE_CONFIG_PORT              0x23f

#define MS_MSE_ENABLE_INTERRUPTS        0x11
#define MS_MSE_DISABLE_INTERRUPTS       0x10

#define MS_MSE_READ_BUTTONS             0x00
#define MS_MSE_READ_X                   0x01
#define MS_MSE_READ_Y                   0x02

#define MS_MSE_START                    0x80
#define MS_MSE_COMMAND_MODE             0x07

/// useful microsoft busmouse macros 

#define MS_MSE_INT_OFF() {outb(MS_MSE_COMMAND_MODE, MS_MSE_CONTROL_PORT); \
                            outb(MS_MSE_DISABLE_INTERRUPTS, MS_MSE_DATA_PORT);}
#define MS_MSE_INT_ON()  {outb(MS_MSE_COMMAND_MODE, MS_MSE_CONTROL_PORT); \
                            outb(MS_MSE_ENABLE_INTERRUPTS, MS_MSE_DATA_PORT);}

 
struct mouse_status {
        unsigned char   buttons;
        unsigned char   latch_buttons;
        int             dx;
        int             dy;     
        int             present;
        int             ready;
        int             active;
        struct wait_queue *wait;
};

/// Function Prototypes 
extern long mouse_init(long);

#endif

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