Re: epia-m parallel port

[Dave Ashley]

Ron wrote:
> Dave, can you send me the file with all your good fixes in it :-)

My linuxbios V1 src/superio/via/vt1211/setup_serial.inc is
this:
#define OUTIT(val, port) movb val, %al; \
    outb %al, port

#define OUTPNPADDR(val) OUTIT(val, $0x2e); OUTIT(val, $0xeb)
#define OUTPNPDATA(val) OUTIT(val, $0x2f); OUTIT(val, $0xeb)

/* to do: move this to a common include file! */
#define WRITESIOBYTE(register, value) movw register, %dx ;\
    movb	value, %al ;\
    outb	%al, %dx;\
    outb	%al, $0xeb;\
    outb	%al, $0xeb

#define WRITESIOWORD(register, value) movw register, %dx ;\
    movw	value, %ax ;\
    outw	%ax, %dx;\
    outb	%al, $0xeb;\
    outb	%al, $0xeb

enable_serial:
    /* turn on PnP */
    OUTPNPADDR($0x87)
    OUTPNPADDR($0x87)

/* Allow serial port 2 (ldn 3) pins to come out */
    OUTPNPADDR($0x27)
    OUTPNPDATA($00)

/* select com1 */
    OUTPNPADDR($7)
    OUTPNPDATA($3)
    /* set the enable in reg. 0x30 */
    OUTPNPADDR($0x30)
    OUTPNPDATA($0x1)

/* Serial Port 1 Base Address (FEh) */
    OUTPNPADDR($0x60)
    OUTPNPDATA($0xfe)
    /* Serial Port 1 IRQ (04h) */
    OUTPNPADDR($0x70)
    OUTPNPDATA($0x4)
    /* Serial Port 1 Control */
    OUTPNPADDR($0xf0)
    OUTPNPDATA($0x2)

/* select com2 */
    OUTPNPADDR($7)
    OUTPNPDATA($2)
    /* set the enable in reg. 0x30 */
    OUTPNPADDR($0x30)
    OUTPNPDATA($0x1)

/* Serial Port 2 Base Address (BEh) */
    OUTPNPADDR($0x60)
    OUTPNPDATA($0xbe)
    /* Serial Port 2 IRQ (03h) */
    OUTPNPADDR($0x70)
    OUTPNPDATA($0x3)
    /* Serial Port 2 Control */
    OUTPNPADDR($0xf0)
    OUTPNPDATA($0x2)

/* Select parallel port */
    OUTPNPADDR($7)
    OUTPNPDATA($1)
    /* set the enable in reg. 0x30 to 00, SPP , 01 = ECP, 02 = EPP */
    OUTPNPADDR($0x30)
    OUTPNPDATA($0)

/* turn off PnP */
    OUTPNPADDR($0xaa)

/* all done that nonsense -- from here on it's standard pc80 */
    /* Enable DLAB to set baud rate. */
    WRITESIOBYTE($0x3fb, $0x80)
    /* Set Buad Rate Divisor = 1==> 115 kb */
    WRITESIOWORD($0x3f8, $0x1)
    /* now set no parity, one stop, 8 bits, disable DLAB */
    WRITESIOBYTE($0x3fb, $0x3)
    /* now turn on RTS, DTR */
    WRITESIOBYTE($0x3fc, $0x3)
    /* Enable interrupts */
    WRITESIOBYTE($0x3f9, $0xf)

/* should be done. Dump a char for fun. */
    WRITESIOBYTE($0x3f8, $0x30)

/* Enable DLAB to set baud rate. */
    WRITESIOBYTE($0x2fb, $0x80)
    /* Set Buad Rate Divisor = 1==> 115 kb */
    WRITESIOWORD($0x2f8, $0x1)
    /* now set no parity, one stop, 8 bits, disable DLAB */
    WRITESIOBYTE($0x2fb, $0x3)
    /* now turn on RTS, DTR */
    WRITESIOBYTE($0x2fc, $0x3)
    /* Enable interrupts */
    WRITESIOBYTE($0x2f9, $0xf)

/* should be done. Dump a char for fun. */
    WRITESIOBYTE($0x2f8, $0x31)