static unsigned int videointerface_readcolormap(struct system_node *self, struct system_node *current, struct service_state *state, void *buffer, unsigned int count, unsigned int offset)
{
char *c = buffer;
unsigned int i;
if (count > VGA_COLORMAP_LIMIT)
count = VGA_COLORMAP_LIMIT;
if (offset > count)
return 0;
for (i = offset; i < count * 3; i += 3)
{
io_outb(VGA_REGISTER_DACRINDEX, i / 3);
c[i + 0] = io_inb(VGA_REGISTER_DACDATA);
c[i + 1] = io_inb(VGA_REGISTER_DACDATA);
c[i + 2] = io_inb(VGA_REGISTER_DACDATA);
}
return i - offset;
}
/*
* Initialises the CMOS RTC driver.
*/
static void* rtc_init(device_t *dev) {
// Read initial RTC values
rtc_read();
// Enable the periodic IRQ
IRQ_OFF();
io_outb(CMOS_REG_PORT, 0x8B);
uint8_t reg = io_inb(CMOS_DATA_PORT);
io_outb(CMOS_REG_PORT, 0x8B);
io_outb(CMOS_DATA_PORT, reg | 0x40);
// Rate is 2 Hz
io_outb(CMOS_REG_PORT, 0x8A);
reg = io_inb(CMOS_DATA_PORT);
io_outb(CMOS_REG_PORT, 0x8A);
io_outb(CMOS_DATA_PORT, (reg & 0xF0) | 0x0F);
// Install IRQ handler
hal_register_irq_handler(8, rtc_sys_tick, NULL);
// Re-enable IRQs
IRQ_RES();
return BUS_NO_INIT_DATA;
}
static unsigned int videointerface_rcolormap(unsigned int offset, void *buffer, unsigned int count)
{
char *c = buffer;
unsigned int i;
if (count > VGA_COLORMAP_LIMIT)
count = VGA_COLORMAP_LIMIT;
if (offset > count)
return 0;
for (i = offset; i < count * 3; i += 3)
{
io_outb(VGA_REGISTER_DACRINDEX, i / 3);
c[i + 0] = io_inb(VGA_REGISTER_DACDATA);
c[i + 1] = io_inb(VGA_REGISTER_DACDATA);
c[i + 2] = io_inb(VGA_REGISTER_DACDATA);
}
return i - offset;
}
void console_write(char *string)
{
unsigned int curchar, vidmem_off, i;
io_outb(0x3d4, 0x0e); /* Get cursor Y position */
vidmem_off = io_inb(0x3d5);
vidmem_off <<= 8;
io_outb(0x3d4, 0x0f); /* And add cursor X position */
vidmem_off += io_inb(0x3d5);
vidmem_off <<= 1;
while((curchar=*string++)) /* Loop through the string */
{
switch(curchar) /* Is it a special character ? */
{
case '\n': /* Newline found */
vidmem_off = (vidmem_off/160)*160 + 160;
break;
case '\r': /* Carriage return found */
vidmem_off = (vidmem_off/160)*160;
break;
case '\t':
vidmem_off += 8;
break;
case 8:/* Delete */
vidmem_off-=2;
VIDEO_MEMORY[vidmem_off] = 0x20;
break;
default: /* Normal character */
VIDEO_MEMORY[vidmem_off++] = curchar;
VIDEO_MEMORY[vidmem_off++] = 0x07;
break;
}
if(vidmem_off >= 160*25) /* Are we off-screen ? */
{
for(i = 0; i < 160*24; i++) /* Scroll the screen up */
{
VIDEO_MEMORY[i] = VIDEO_MEMORY[i+160];
}
for(i = 0; i < 80; i++) /* Empty the bottom row */
{
VIDEO_MEMORY[(160*24)+(i*2)] = 0x20;
VIDEO_MEMORY[(160*24)+(i*2)+1] = 0x07;
}
vidmem_off -= 160; /* We're on the bottom row */
}
}
vidmem_off >>= 1; /* Set the new cursor position */
io_outb(0x3d4, 0x0f);
io_outb(0x3d5, vidmem_off & 0x0ff);
io_outw(0x3d4, 0x0e);
io_outb(0x3d5, vidmem_off >> 8);
}/* console_write */
static void flushdata(void)
{
while ((io_inb(REGISTERCONTROL) & STATUSOFULL))
io_inb(REGISTERDATA);
}
/*
* Read from a register of a channel.
*/
static uint8_t ata_reg_read(ata_driver_t *drv, uint8_t channel, uint8_t reg) {
uint8_t result = 0;
// Set high LBA flag
if (reg > 0x07 && reg < 0x0C) {
ata_reg_write(drv, channel, ATA_REG_CONTROL, 0x80 | drv->channels[channel].nIEN);
}
// If register is 0-7, read from base address
if (reg < 0x08) {
result = io_inb(drv->channels[channel].base + reg - 0x00);
}
// Is register SECCOUNT0, or LBA 3 through 5?
else if (reg < 0x0C) {
result = io_inb(drv->channels[channel].base + reg - 0x06);
}
// Is register DEVADDRESS?
else if (reg < 0x0E) {
result = io_inb(drv->channels[channel].ctrl + reg - 0x0A);
}
else if (reg < 0x16) {
result = io_inb(drv->channels[channel].bmide + reg - 0x0E);
}
// Reset high LBA flag
if (reg > 0x07 && reg < 0x0C) {
ata_reg_write(drv, channel, ATA_REG_CONTROL, drv->channels[channel].nIEN);
}
return result;
}
static unsigned char polldata(void)
{
while (!(io_inb(REGISTERCONTROL) & STATUSOFULL));
return io_inb(REGISTERDATA);
}
void
kkeyb_update_leds(uint8_t status)
{
while((io_inb(0x64)&2)!=0){}
io_outb(0x60,0xED);
while((io_inb(0x64)&2)!=0){}
io_outb(0x60,status);
}
/**
* Aggiorna lo stato dei led della tastiera
*/
void keyboard_update_leds(uint8_t status)
{
uint8_t tmp;
while((io_inb(0x64)&2)!=0){}
io_outb(0x60,0xED);
while((io_inb(0x64)&2)!=0){}
io_outb(0x60,status);
}
void setleds()
{
io_outb(0x60, 0xED);
while(io_inb(0x64) & 2)
/* wait. */;
io_outb(0x60, led_status);
while(io_inb(0x64) & 2)
/* wait. */;
}
/**
* Unmasks the IRQ with the given index.
*
* @param index The index of the IRQ to unmask.
*/
void irq_pic_unmask(uint8_t index) {
// IRQ 2 is always unmasked
if (2 == index) return;
// PIC 1 or PIC 2?
if (index > 7 && index <= 15)
io_outb(IO_PIC2_DATA, io_inb(IO_PIC2_DATA) & ~(1 << (index - 8)));
else if (index <= 7)
io_outb(IO_PIC1_DATA, io_inb(IO_PIC1_DATA) & ~(1 << index));
}
/**
* Masks the IRQ with the given index.
*
* @param index The index of the IRQ to mask.
*/
void irq_pic_mask(uint8_t index) {
// IRQ 2 cannot be masked
if (UNLIKELY(2 == index)) return;
// PIC 1 or PIC 2?
if (index > 7 && index <= 15)
io_outb(IO_PIC2_DATA, io_inb(IO_PIC2_DATA) | (1 << (index - 8)));
else if (index <= 7)
io_outb(IO_PIC1_DATA, io_inb(IO_PIC1_DATA) | (1 << index));
}
void __noreturn reboot(void)
{
uint8_t tmp;
disable_interrupts();
do {
tmp = io_inb(KEYBOARD_CMND);
if (TEST_FLAG(tmp, KBD_KDATA_BIT) != 0)
io_inb(KEYBOARD_DATA);
} while (TEST_FLAG(tmp, KBD_UDATA_BIT) != 0);
io_outb(KEYBOARD_CMND, KEYBOARD_RESET);
printk(PRINTK_ERROR "Rebooting");
hang();
}
MouseDriver::MouseDriver() : Driver("Mouse", "ps")
{
uint8_t status;
Wait(1);
io_outb(0x64, 0xA8);
Wait(1);
io_outb(0x64, 0x20);
Wait(0);
status = (io_inb(0x60) | 2);
Wait(1);
io_outb(0x64, 0x60);
Wait(1);
io_outb(0x60, status);
// Valori di default
MouseWrite(0xF6);
MouseRead();
// Abilita lo sacmbio dati
MouseWrite(0xF4);
MouseRead();
// Scaling 1:1
MouseWrite(0xE6);
MouseRead();
// Imposta l'handler
setHandler(MouseDriver::IRQ, &MouseCallback);
}
/*
* IRQ handler for the RTC (called twice a second)
*/
static void rtc_sys_tick(void* ctx) {
// Read the RTC register so IRQ will happen again
io_outb(0x70, 0x0C);
io_inb(0x71);
// Only increment time every second
if(tick++ == 2) {
tick = 0;
} else {
return;
}
// Increment seconds
if(time.second++ == 59) {
time.second = 0;
// Increment minutes
if(time.minute++ == 59) {
time.minute = 0;
// Resync with hardware every hour
rtc_read();
}
}
// Reseed PRNG
srand(irq_count());
// KDEBUG("%02u:%02u:%02u (%02u-%02u-%04u)", time.hour, time.minute, time.second, time.day, time.month, time.year);
}
uint32_t
PciBus::Read(uint32_t bus, uint32_t device, uint32_t function, uint32_t offset, uint8_t size)
{
uint32_t value;
io_outd(0xCF8, 0x80000000 | (bus << 16) | (device << 11) | (function << 8) | (offset & ~3));
switch (size)
{
case 1:
value = io_inb(0xCFC + (offset & 3));
break;
case 2:
value = io_inw(0xCFC + (offset & 2));
break;
case 4:
value = io_ind(0xCFC);
break;
default:
return 0xFF;
}
return value;
}
int kb_handler(struct isr_regs *regs)
{
char scancode;
scancode = io_inb(0x60);
printk("\tKeyboard handler here! scancode is %x\n", scancode);
}
BOOL harddisk_request(u32 lba, u32 sects_to_read)
{
u32 cylinder_no, head_no, sect_no, temp;
cylinder_no = lba / (HD0_HEAD_PER_CYLINDER * HD0_SECT_PER_TRACK);
temp = lba % (HD0_HEAD_PER_CYLINDER * HD0_SECT_PER_TRACK);
head_no = temp / HD0_SECT_PER_TRACK;
sect_no = temp % HD0_SECT_PER_TRACK + 1;
/* check if harddisk is busy, if busy, wait */
while ((io_inb(HD_PORT_STATUS) & 0x80) != 0)
;
/* set sect number and CHS */
io_outb(sects_to_read, HD_PORT_SECT_COUNT);
io_outb(sect_no, HD_PORT_SECT_NO);
io_outb(cylinder_no, HD_PORT_CYLINDER_LOW);
cylinder_no >>= 8;
io_outb((cylinder_no), HD_PORT_CYLINDER_HIGH);
/* 0xa0 = 1010 0000,
* when set head, bit5 and bit7 should be 1,
* when bit6 == 0, bit0~bit3 is the head no,
* bit4 is driver no, 0 is HD0 */
head_no |= 0xa0;
io_outb((head_no), HD_PORT_DRIVE_HEAD);
/* send read command */
io_outb(HD_CMD_READ, HD_PORT_COMMAND);
return TRUE;
}
static void setdata(unsigned char value)
{
while ((io_inb(REGISTERCONTROL) & STATUSIFULL));
io_outb(REGISTERDATA, value);
}
static void setcommand(unsigned char value)
{
while ((io_inb(REGISTERCONTROL) & STATUSIFULL));
io_outb(REGISTERCONTROL, value);
}
// Called by keyboard driver when Ctrl+Alt+Del is pressed
void hid_keyboard_sas(void) {
KWARNING("Ctrl+Alt+Del triggered");
uint8_t good = 0x02;
while (good & 0x02) {
good = io_inb(0x64);
}
io_outb(0x64, 0xFE);
}
void do_keyboard()
{
u8 scan_code = io_inb(0x60); /* 读取扫描码 */
if (!is_queue_full(&kb_queue)) /* 若队列未满则入队，否则放弃该扫描码 */
{
en_queue(&kb_queue, scan_code);
}
io_outb(0x20, 0x20);
}
void
Wait(uint8_t a_type)
{
uint32_t time_out = 100000;
if(a_type == 0)
{
while(time_out--)
if((io_inb(0x64) & 1) == 1) return;
return;
}
else
{
while(time_out--)
if((io_inb(0x64) & 2) == 0) return;
return;
}
}
/**
* Inizializza l'rtc
*/
void clock_init()
{
char prev;
io_outb(0x70, 0x0B);
prev = io_inb(0x71);
io_outb(0x70, 0x0B);
io_outb(0x71, prev | 0x40);
handler_reg(8, &clock_callback);
}
void irq_unmask(int irq_line)
{
uint16_t port;
uint8_t mask;
if (irq_line < 8)
port = IO_PIC1_DATA;
else {
port = IO_PIC2_DATA;
irq_line -= 8;
}
mask = io_inb(port);
io_outb(port, mask & ~(1 << irq_line));
}
/**
* Handler della tastiera
*/
static void keyboard_callback(regs_t *reg)
{
unsigned code = io_inb(0x60);
// Tasto rilasciato
if (code & 0x80)
{
code &= 0x7F;
switch(code)
{
case SHIFT_LEFT:
case SHIFT_RIGHT:
shift = 0;
break;
}
}
// Tasto premuto
else
{
switch(code)
{
case LOCK_CAPS:
capslock = !capslock;
keyboard_update_leds(LED_CAPS | LED_NUM);
break;
case LOCK_NUM:
numlock = !numlock;
keyboard_update_leds(LED_CAPS | LED_NUM);
break;
case SHIFT_LEFT:
case SHIFT_RIGHT:
shift = 1;
break;
default:
if((shift && !capslock) || (!shift && capslock)) buf[bufpoint] = keyboard_standard_charset_shifted[code];
else buf[bufpoint] = keyboard_standard_charset[code];
bufsize++;
bufpoint++;
break;
}
}
}
void pit_wait(unsigned int ms)
{
unsigned short x = 1193 * ms;
io_outb(io + REGISTERCOMMAND, COMMANDCHANNEL0 | COMMANDBOTH | COMMANDMODE0);
io_outb(io + REGISTERCHANNEL0, x >> 8);
io_outb(io + REGISTERCHANNEL0, x);
io_outb(io + REGISTERCOMMAND, 0xE2);
while (!(io_inb(io + REGISTERCHANNEL0) & (1 << 7)));
/* Return old values */
io_outb(io + REGISTERCOMMAND, COMMANDCHANNEL0 | COMMANDBOTH | COMMANDMODE3);
io_outb(io + REGISTERCHANNEL0, divisor);
io_outb(io + REGISTERCHANNEL0, divisor >> 8);
}
/* Taken from http://www.sci.muni.cz/docs/pc/serport.txt */
static int serial_detect(const u16 addr)
{
u8 od;
/* Check for UART presence */
od = io_inb(addr + 4);
io_outb(addr + 4, 0x10);
if (io_inb(addr + 6) & 0xF0)
return 0;
io_outb(addr + 4, 0x1F);
if ((io_inb(addr + 6) & 0xF0) != 0xF0)
return 0;
io_outb(addr + 4, od);
/* Check if 8250 */
od = io_inb(addr + 7);
io_outb(addr + 7, 0x55);
if (io_inb(addr + 7) != 0x55)
return 1;
io_outb(addr + 7, 0xAA);
if (io_inb(addr + 7) != 0xAA)
return 1;
io_outb(addr + 7, od);
/* Check for FIFO */
io_outb(addr + 2, 0x01);
od = io_inb(addr + 2);
io_outb(addr + 2, 0x00);
/* Check if 8250 or 16450 with scratch regs */
if (!(od & 0x80))
return 2;
/* Check if 16450 */
if (!(od & 0x40))
return 3;
/* Then it's a 16550A */
return 4;
}
unsigned int ps2_checkdata(unsigned int id)
{
unsigned char control = io_inb(REGISTERCONTROL);
if (!(control & 0x01))
return 0;
switch (id)
{
case PS2_KEYBOARD:
return !(control & 0x20);
case PS2_MOUSE:
return (control & 0x20);
}
return 0;
}
