190 lines
6.0 KiB
C
190 lines
6.0 KiB
C
#include "ibm.h"
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#include "keyboard_at.h"
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#include "mouse.h"
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#include "mouse_ps2.h"
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#include "plat-mouse.h"
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int mouse_scan = 0;
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enum
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{
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MOUSE_STREAM,
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MOUSE_REMOTE,
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MOUSE_ECHO
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};
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#define MOUSE_ENABLE 0x20
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#define MOUSE_SCALE 0x10
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static struct
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{
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int mode;
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uint8_t flags;
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uint8_t resolution;
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uint8_t sample_rate;
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uint8_t type;
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uint8_t command;
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int cd;
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} mouse_ps2;
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void mouse_ps2_write(uint8_t val)
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{
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// pclog("PS/2 Mouse: Write %02X\n", val);
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if (mouse_ps2.cd)
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{
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mouse_ps2.cd = 0;
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switch (mouse_ps2.command)
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{
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case 0xe8: /*Set mouse resolution*/
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mouse_ps2.resolution = val;
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keyboard_at_adddata_mouse(0xfa);
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break;
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case 0xf3: /*Set sample rate*/
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mouse_ps2.sample_rate = val;
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keyboard_at_adddata_mouse(0xfa);
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break;
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// default:
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// fatal("mouse_ps2 : Bad data write %02X for command %02X\n", val, mouse_ps2.command);
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}
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}
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else
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{
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uint8_t temp;
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mouse_ps2.command = val;
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switch (mouse_ps2.command)
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{
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case 0xe6: /*Set scaling to 1:1*/
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mouse_ps2.flags &= ~MOUSE_SCALE;
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keyboard_at_adddata_mouse(0xfa);
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break;
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case 0xe7: /*Set scaling to 2:1*/
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mouse_ps2.flags |= MOUSE_SCALE;
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keyboard_at_adddata_mouse(0xfa);
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break;
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case 0xe8: /*Set mouse resolution*/
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mouse_ps2.cd = 1;
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keyboard_at_adddata_mouse(0xfa);
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break;
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case 0xe9: /*Status request*/
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keyboard_at_adddata_mouse(0xfa);
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temp = mouse_ps2.flags;
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if (mouse_buttons & 1)
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temp |= 1;
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if (mouse_buttons & 2)
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temp |= 2;
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if (mouse_buttons & 4)
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temp |= 3;
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keyboard_at_adddata_mouse(temp);
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keyboard_at_adddata_mouse(mouse_ps2.resolution);
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keyboard_at_adddata_mouse(mouse_ps2.sample_rate);
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break;
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case 0xf2: /*Read ID*/
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keyboard_at_adddata_mouse(0xfa);
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keyboard_at_adddata_mouse(0x00);
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break;
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case 0xf3: /*Set sample rate*/
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mouse_ps2.cd = 1;
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keyboard_at_adddata_mouse(0xfa);
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break;
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case 0xf4: /*Enable*/
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mouse_ps2.flags |= MOUSE_ENABLE;
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keyboard_at_adddata_mouse(0xfa);
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break;
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case 0xf5: /*Disable*/
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mouse_ps2.flags &= ~MOUSE_ENABLE;
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keyboard_at_adddata_mouse(0xfa);
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break;
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case 0xff: /*Reset*/
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mouse_ps2.mode = MOUSE_STREAM;
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mouse_ps2.flags = 0;
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keyboard_at_adddata_mouse(0xfa);
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keyboard_at_adddata_mouse(0xaa);
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keyboard_at_adddata_mouse(0x00);
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break;
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// default:
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// fatal("mouse_ps2 : Bad command %02X\n", val, mouse_ps2.command);
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}
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}
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}
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static int ps2_x = 0, ps2_y = 0, ps2_b = 0;
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int first_time = 1;
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void mouse_ps2_poll(int x, int y, int b)
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{
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uint8_t packet[3] = {0x08, 0, 0};
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if (!x && !y && b == ps2_b && !first_time){
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// pclog("PS/2 Mouse: X is 0, Y is 0, and B is PS2_B\n");
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return;
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}
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if (first_time) first_time = 0;
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if (!mouse_scan)
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{
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// pclog("PS/2 Mouse: Not scanning\n");
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return;
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}
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ps2_x += x;
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ps2_y -= y;
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if (mouse_ps2.mode == MOUSE_STREAM && (mouse_ps2.flags & MOUSE_ENABLE) &&
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((mouse_queue_end - mouse_queue_start) & 0xf) < 13)
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{
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ps2_b = b;
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// pclog("Send packet : %i %i\n", ps2_x, ps2_y);
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if (ps2_x > 255)
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ps2_x = 255;
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if (ps2_x < -256)
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ps2_x = -256;
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if (ps2_y > 255)
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ps2_y = 255;
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if (ps2_y < -256)
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ps2_y = -256;
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if (ps2_x < 0)
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packet[0] |= 0x10;
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if (ps2_y < 0)
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packet[0] |= 0x20;
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if (mouse_buttons & 1)
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packet[0] |= 1;
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if (mouse_buttons & 2)
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packet[0] |= 2;
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if (mouse_buttons & 4)
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packet[0] |= 4;
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packet[1] = ps2_x & 0xff;
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packet[2] = ps2_y & 0xff;
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ps2_x = ps2_y = 0;
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keyboard_at_adddata_mouse(packet[0]);
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keyboard_at_adddata_mouse(packet[1]);
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keyboard_at_adddata_mouse(packet[2]);
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}
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// pclog("PS/2 Mouse: Poll\n");
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}
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void mouse_ps2_init()
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{
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mouse_poll = mouse_ps2_poll;
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mouse_write = mouse_ps2_write;
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mouse_ps2.cd = 0;
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mouse_ps2.flags = 0;
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mouse_ps2.mode = MOUSE_STREAM;
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}
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