Damien Zammit, le mar. 30 mars 2021 13:58:30 +1100, a ecrit:
> + val = (inb(PITAUX_PORT) & 0xfd) | 0x1;
Rather use val &= ~PITAUX_OUT2; val |= PITAUX_GATE2;
> + outb(PITAUX_PORT, val);
> + outb(PITCTL_PORT, 0xb2);
Use PIT_C2|PIT_LOADMODE|PIT_RATEMODE.
> + val = CLKNUM / hz;
> + lsb = val & 0xff;
> + msb = val >> 8;
> + outb(PITCTR2_PORT, lsb);
> + val = inb(0x60);
Why 0x60? That's the PS/2 port. Did you mean 0x80?
> + outb(PITCTR2_PORT, msb);
>
> + /* Start counting down */
> + val = inb(PITAUX_PORT) & 0xfe;
Use val &= ~PITAUX_GATE2;
> + outb(PITAUX_PORT, val); /* Gate low */
> + val |= 0x1;
Use |= PITAUX_GATE2;
> + outb(PITAUX_PORT, val); /* Gate high */
> +}
> +
> +void
> +pit_sleep(void)
> +{
> + /* Wait until counter reaches zero */
> + while ((inb(PITAUX_PORT) & 0x20) == 0);
Use PITAUX_VAL.
Samuel
