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/*
* Copyright (C) 2003, 2004 Stefan Reinauer
*
* See the file "COPYING" for further information about
* the copyright and warranty status of this work.
*/
#include "openbios/config.h"
#include "openbios/bindings.h"
#include "openbios/kernel.h"
#include "openbios/drivers.h"
#include "libc/vsprintf.h"
/* ******************************************************************
* simple polling video/keyboard console functions
* ****************************************************************** */
/*
* keyboard driver
*/
static const char normal[] = {
0x0, 0x1b, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-',
'=', '\b', '\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o',
'p', '[', ']', 0xa, 0x0, 'a', 's', 'd', 'f', 'g', 'h', 'j',
'k', 'l', ';', 0x27, 0x60, 0x0, 0x5c, 'z', 'x', 'c', 'v', 'b',
'n', 'm', ',', '.', '/', 0x0, '*', 0x0, ' ', 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '0', 0x7f
};
static const char shifted[] = {
0x0, 0x1b, '!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_',
'+', '\b', '\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O',
'P', '{', '}', 0xa, 0x0, 'A', 'S', 'D', 'F', 'G', 'H', 'J',
'K', 'L', ':', 0x22, '~', 0x0, '|', 'Z', 'X', 'C', 'V', 'B',
'N', 'M', '<', '>', '?', 0x0, '*', 0x0, ' ', 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '7', '8',
'9', 0x0, '4', '5', '6', 0x0, '1', '2', '3', '0', 0x7f
};
static int key_ext;
static int key_lshift = 0, key_rshift = 0, key_caps = 0;
static char last_key;
static void pc_kbd_cmd(unsigned char cmd, unsigned char val)
{
outb(cmd, 0x60);
/* wait until keyboard controller accepts cmds: */
while (inb(0x64) & 2);
outb(val, 0x60);
while (inb(0x64) & 2);
}
static void pc_kbd_controller_cmd(unsigned char cmd, unsigned char val)
{
outb(cmd, 0x64);
/* wait until keyboard controller accepts cmds: */
while (inb(0x64) & 2);
outb(val, 0x60);
while (inb(0x64) & 2);
}
static char pc_kbd_poll(void)
{
unsigned int c;
if (inb(0x64) & 1) {
c = inb(0x60);
switch (c) {
case 0xe0:
key_ext = 1;
return 0;
case 0x2a:
key_lshift = 1;
return 0;
case 0x36:
key_rshift = 1;
return 0;
case 0xaa:
key_lshift = 0;
return 0;
case 0xb6:
key_rshift = 0;
return 0;
case 0x3a:
if (key_caps) {
key_caps = 0;
pc_kbd_cmd(0xed, 0);
} else {
key_caps = 1;
pc_kbd_cmd(0xed, 4); /* set caps led */
}
return 0;
}
if (key_ext) {
// void printk(const char *format, ...);
printk("extended keycode: %x\n", c);
key_ext = 0;
return 0;
}
if (c & 0x80) /* unhandled key release */
return 0;
if (key_lshift || key_rshift)
return key_caps ? normal[c] : shifted[c];
else
return key_caps ? shifted[c] : normal[c];
}
return 0;
}
int pc_kbd_dataready(void)
{
if (last_key)
return 1;
last_key = pc_kbd_poll();
return (last_key != 0);
}
unsigned char pc_kbd_readdata(void)
{
char tmp;
while (!pc_kbd_dataready());
tmp = last_key;
last_key = 0;
return tmp;
}
/* ( addr len -- actual ) */
static void
pc_kbd_read(void)
{
unsigned char *addr;
int len;
len = POP();
addr = (unsigned char *)POP();
if (len != 1)
printk("pc_kbd_read: bad len, addr %lx len %x\n", (unsigned long)addr, len);
if (pc_kbd_dataready()) {
*addr = pc_kbd_readdata();
PUSH(1);
} else {
PUSH(0);
}
}
static void
pc_kbd_close(void)
{
}
static void
pc_kbd_open(unsigned long *address)
{
int len;
phandle_t ph;
unsigned long *prop;
char *args;
fword("my-self");
fword("ihandle>phandle");
ph = (phandle_t)POP();
prop = (unsigned long *)get_property(ph, "address", &len);
*address = *prop;
fword("my-args");
args = pop_fstr_copy();
RET ( -1 );
}
DECLARE_UNNAMED_NODE(pc_kbd, INSTALL_OPEN, sizeof(unsigned long));
NODE_METHODS(pc_kbd) = {
{ "open", pc_kbd_open },
{ "close", pc_kbd_close },
{ "read", pc_kbd_read },
};
void
ob_pc_kbd_init(const char *path, const char *dev_name, uint64_t base,
uint64_t offset, int intr)
{
phandle_t chosen, aliases;
char nodebuff[128];
snprintf(nodebuff, sizeof(nodebuff), "%s/%s", path, dev_name);
REGISTER_NAMED_NODE(pc_kbd, nodebuff);
push_str(nodebuff);
fword("find-device");
push_str(dev_name);
fword("device-name");
push_str("keyboard");
fword("device-type");
chosen = find_dev("/chosen");
push_str(nodebuff);
fword("open-dev");
set_int_property(chosen, "keyboard", POP());
aliases = find_dev("/aliases");
set_property(aliases, "keyboard", nodebuff, strlen(nodebuff) + 1);
pc_kbd_controller_cmd(0x60, 0x40); // Write mode command, translated mode
}
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