1991/0803/pc/kbd.c (diff list | history)

1991/0801/sys/src/9/pc/kbd.c:240,268 – 1991/0803/sys/src/9/pc/kbd.c:240,296 (short | long | prev | next)
1991/0703		return 0; }
1991/0731		static void mousecmd(int cmd, int arg)
1991/0803		/* * wait for output no longer busy */ static int outready(void)
1991/0731		{
1991/0803		int tries; for(tries = 0; (inb(Status) & Outbusy); tries++) if(tries > 1000) return -1; return 0; } /* * wait for input */ static int inready(void) { int tries; for(tries = 0; !(inb(Status) & Inready); tries++) if(tries > 1000) return -1; return 0; } /* * send a command to the mouse */ static int mousecmd(int cmd) {
1991/0731		unsigned int c;
1991/0803		int tries;
1991/0731		do { while(inb(Status) & Outbusy) ;
1991/0803		for(tries=0; tries < 10; tries++){ if(outready() < 0) return -1;
1991/0731		outb(Cmd, 0xD4); while(inb(Status) & Outbusy) ;
1991/0803		if(outready() < 0) return -1;
1991/0731		outb(Data, cmd); if(arg >= 0){ while(inb(Status) & Outbusy) ; outb(Data, arg); } while(!(inb(Status) & Inready)) ;
1991/0803		if(inready() < 0) return -1;
1991/0731		c = inb(Data); } while(c == 0xFE); if(c != 0xFA) print("mouse command returns bad status %lux", c);
1991/0803		return -1; return 0;
1991/0731		}
1991/0703		void
1991/0801/sys/src/9/pc/kbd.c:269,274 – 1991/0803/sys/src/9/pc/kbd.c:297,303
1991/0703		kbdinit(void) {
1991/0731		int c, s;
1991/0803		int tries;
1991/0730
1991/0703		initq(&kbdq);
1991/0716		setvec(Kbdvec, kbdintr);
1991/0801/sys/src/9/pc/kbd.c:282,300 – 1991/0803/sys/src/9/pc/kbd.c:311,327
1991/0730
1991/0731		/* enable kbd/mouse xfers and interrupts */
1991/0730		outb(Cmd, 0x60); while(inb(Status) & Outbusy) ;
1991/0803		if(outready() < 0) print("kbd init failed\n");
1991/0731		outb(Data, 0x47); while(inb(Status) & Outbusy) ;
1991/0803		if(outready() < 0) print("kbd init failed\n");
1991/0731		outb(Cmd, 0xA8); /* make mouse streaming (and enabled) */ mousecmd(0xEA, -1); mousecmd(0xF4, -1);                  /* resolution */
1991/0801		/* mousecmd(0xE8, 0x03); /**/
1991/0803		/* make mouse streaming, enabled */ if(mousecmd(0xEA) < 0 || mousecmd(0xF4) < 0) print("can't initialize mouse\n");
1991/0731		}
1991/0730
1991/0731		/*