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There is no need for this to be here, so move it alongside the code

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it refers to as that makes more sense.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@345 a95241bf-73f2-0310-859d-f6bbb57e9c96
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David Reid 2002-07-19 18:23:10 +00:00
parent 76858a334d
commit 8a396015a1
1 changed files with 0 additions and 106 deletions
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headers/private/kernel/arch/x86/ps2mouse.h
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/*
* ps2mouse.c:
* PS/2 mouse device driver for NewOS and OpenBeOS.
* Author: Elad Lahav (elad@eldarshany.com)
* Created: 21.12.2001
* Modified: 11.1.2002
*/
/*
* A PS/2 mouse is connected to the IBM 8042 controller, and gets its
* name from the IBM PS/2 personal computer, which was the first to
* use this device. All resources are shared between the keyboard, and
* the mouse, referred to as the "Auxiliary Device".
* I/O:
* ~~~
* The controller has 3 I/O registers:
* 1. Status (input), mapped to port 64h
* 2. Control (output), mapped to port 64h
* 3. Data (input/output), mapped to port 60h
* Data:
* ~~~~
* Since a mouse is an input only device, data can only be read, and
* not written. A packet read from the mouse data port is composed of
* three bytes:
* byte 0: status byte, where
* - bit 0: Y overflow (1 = true)
* - bit 1: X overflow (1 = true)
* - bit 2: MSB of Y offset
* - bit 3: MSB of X offset
* - bit 4: Syncronization bit (always 1)
* - bit 5: Middle button (1 = down)
* - bit 6: Right button (1 = down)
* - bit 7: Left button (1 = down)
* byte 1: X position change, since last probed (-127 to +127)
* byte 2: Y position change, since last probed (-127 to +127)
* Interrupts:
* ~~~~~~~~~~
* The PS/2 mouse device is connected to interrupt 12, which means that
* it uses the second interrupt controller (handles INT8 to INT15). In
* order for this interrupt to be enabled, both the 5th interrupt of
* the second controller AND the 3rd interrupt of the first controller
* (cascade mode) should be unmasked.
* The controller uses 3 consecutive interrupts to inform the computer
* that it has new data. On the first the data register holds the status
* byte, on the second the X offset, and on the 3rd the Y offset.
*/
#ifndef _KERNEL_ARCH_x86_PS2MOUSE_H
#define _KERNEL_ARCH_x86_PS2MOUSE_H
#include <kernel.h>
#include <memheap.h>
#include <int.h>
#include <debug.h>
#include <devfs.h>
#include <arch/int.h>
#include <OS.h>
#include <string.h>
/////////////////////////////////////////////////////////////////////////
// definitions
// I/O addresses
#define PS2_PORT_DATA 0x60
#define PS2_PORT_CTRL 0x64
// control words
#define PS2_CTRL_WRITE_CMD 0x60
#define PS2_CTRL_WRITE_AUX 0xD4
// data words
#define PS2_CMD_DEV_INIT 0x43
#define PS2_CMD_ENABLE_MOUSE 0xF4
#define PS2_CMD_DISABLE_MOUSE 0xF5
#define PS2_CMD_RESET_MOUSE 0xFF
#define PS2_RES_ACK 0xFA
#define PS2_RES_RESEND 0xFE
// interrupts
#define INT_BASE 0x20
#define INT_PS2_MOUSE 0x0C
#define INT_CASCADE 0x02
#define PACKET_SIZE 3
/*
* mouse_data:
* Holds the data read from the PS/2 auxiliary device.
*/
typedef struct {
char status;
char delta_x;
char delta_y;
} mouse_data; // mouse_data
#ifdef _PS2MOUSE_
static mouse_data md_int;
static mouse_data md_read;
static sem_id mouse_sem;
static bool in_read;
#endif
int mouse_dev_init(kernel_args *ka);
#endif /* _KERNEL_ARCH_x86_PS2MOUSE_H */