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| Current File : //compat/linux/proc/68247/root/compat/linux/proc/68247/root/sys/dev/cx/cxddk.c |
/*-
* Cronyx-Sigma Driver Development Kit.
*
* Copyright (C) 1998 Cronyx Engineering.
* Author: Pavel Novikov, <pavel@inr.net.kiae.su>
*
* Copyright (C) 1998-2003 Cronyx Engineering.
* Author: Roman Kurakin, <rik@cronyx.ru>
*
* This software is distributed with NO WARRANTIES, not even the implied
* warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Authors grant any other persons or organisations permission to use
* or modify this software as long as this message is kept with the software,
* all derivative works or modified versions.
*
* Cronyx Id: cxddk.c,v 1.1.2.2 2003/11/27 14:24:50 rik Exp $
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/cx/cxddk.c 139749 2005-01-06 01:43:34Z imp $");
#include <dev/cx/machdep.h>
#include <dev/cx/cxddk.h>
#include <dev/cx/cxreg.h>
#include <dev/cx/cronyxfw.h>
#include <dev/cx/csigmafw.h>
#define BYTE *(unsigned char*)&
/* standard base port set */
static short porttab [] = {
0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0,
0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0
};
/*
* Compute the optimal size of the receive buffer.
*/
static int cx_compute_buf_len (cx_chan_t *c)
{
int rbsz;
if (c->mode == M_ASYNC) {
rbsz = (c->rxbaud + 800 - 1) / 800 * 2;
if (rbsz < 4)
rbsz = 4;
else if (rbsz > DMABUFSZ)
rbsz = DMABUFSZ;
}
else
rbsz = DMABUFSZ;
return rbsz;
}
/*
* Auto-detect the installed adapters.
*/
int cx_find (port_t *board_ports)
{
int i, n;
for (i=0, n=0; porttab[i] && n<NBRD; i++)
if (cx_probe_board (porttab[i], -1, -1))
board_ports[n++] = porttab[i];
return n;
}
/*
* Initialize the adapter.
*/
int cx_open_board (cx_board_t *b, int num, port_t port, int irq, int dma)
{
cx_chan_t *c;
if (num >= NBRD || ! cx_probe_board (port, irq, dma))
return 0;
/* init callback pointers */
for (c=b->chan; c<b->chan+NCHAN; ++c) {
c->call_on_tx = 0;
c->call_on_rx = 0;
c->call_on_msig = 0;
c->call_on_err = 0;
}
cx_init (b, num, port, irq, dma);
/* Loading firmware */
if (! cx_setup_board (b, csigma_fw_data, csigma_fw_len, csigma_fw_tvec))
return 0;
return 1;
}
/*
* Shutdown the adapter.
*/
void cx_close_board (cx_board_t *b)
{
cx_setup_board (b, 0, 0, 0);
/* Reset the controller. */
outb (BCR0(b->port), 0);
if (b->chan[8].type || b->chan[12].type)
outb (BCR0(b->port+0x10), 0);
}
/*
* Start the channel.
*/
void cx_start_chan (cx_chan_t *c, cx_buf_t *cb, unsigned long phys)
{
int command = 0;
int mode = 0;
int ier = 0;
int rbsz;
c->overflow = 0;
/* Setting up buffers */
if (cb) {
c->arbuf = cb->rbuffer[0];
c->brbuf = cb->rbuffer[1];
c->atbuf = cb->tbuffer[0];
c->btbuf = cb->tbuffer[1];
c->arphys = phys + ((char*)c->arbuf - (char*)cb);
c->brphys = phys + ((char*)c->brbuf - (char*)cb);
c->atphys = phys + ((char*)c->atbuf - (char*)cb);
c->btphys = phys + ((char*)c->btbuf - (char*)cb);
}
/* Set current channel number */
outb (CAR(c->port), c->num & 3);
/* set receiver A buffer physical address */
outw (ARBADRU(c->port), (unsigned short) (c->arphys>>16));
outw (ARBADRL(c->port), (unsigned short) c->arphys);
/* set receiver B buffer physical address */
outw (BRBADRU(c->port), (unsigned short) (c->brphys>>16));
outw (BRBADRL(c->port), (unsigned short) c->brphys);
/* set transmitter A buffer physical address */
outw (ATBADRU(c->port), (unsigned short) (c->atphys>>16));
outw (ATBADRL(c->port), (unsigned short) c->atphys);
/* set transmitter B buffer physical address */
outw (BTBADRU(c->port), (unsigned short) (c->btphys>>16));
outw (BTBADRL(c->port), (unsigned short) c->btphys);
/* rx */
command |= CCR_ENRX;
ier |= IER_RXD;
if (c->board->dma) {
mode |= CMR_RXDMA;
if (c->mode == M_ASYNC)
ier |= IER_RET;
}
/* tx */
command |= CCR_ENTX;
ier |= (c->mode == M_ASYNC) ? IER_TXD : (IER_TXD | IER_TXMPTY);
if (c->board->dma)
mode |= CMR_TXDMA;
/* Set mode */
outb (CMR(c->port), mode | (c->mode == M_ASYNC ? CMR_ASYNC : CMR_HDLC));
/* Clear and initialize channel */
cx_cmd (c->port, CCR_CLRCH);
cx_cmd (c->port, CCR_INITCH | command);
if (c->mode == M_ASYNC)
cx_cmd (c->port, CCR_ENTX);
/* Start receiver */
rbsz = cx_compute_buf_len(c);
outw (ARBCNT(c->port), rbsz);
outw (BRBCNT(c->port), rbsz);
outw (ARBSTS(c->port), BSTS_OWN24);
outw (BRBSTS(c->port), BSTS_OWN24);
if (c->mode == M_ASYNC)
ier |= IER_MDM;
/* Enable interrupts */
outb (IER(c->port), ier);
/* Clear DTR and RTS */
cx_set_dtr (c, 0);
cx_set_rts (c, 0);
}
/*
* Turn the receiver on/off.
*/
void cx_enable_receive (cx_chan_t *c, int on)
{
unsigned char ier;
if (cx_receive_enabled(c) && ! on) {
outb (CAR(c->port), c->num & 3);
if (c->mode == M_ASYNC) {
ier = inb (IER(c->port));
outb (IER(c->port), ier & ~ (IER_RXD | IER_RET));
}
cx_cmd (c->port, CCR_DISRX);
} else if (! cx_receive_enabled(c) && on) {
outb (CAR(c->port), c->num & 3);
ier = inb (IER(c->port));
if (c->mode == M_ASYNC)
outb (IER(c->port), ier | (IER_RXD | IER_RET));
else
outb (IER(c->port), ier | IER_RXD);
cx_cmd (c->port, CCR_ENRX);
}
}
/*
* Turn the transmiter on/off.
*/
void cx_enable_transmit (cx_chan_t *c, int on)
{
if (cx_transmit_enabled(c) && ! on) {
outb (CAR(c->port), c->num & 3);
if (c->mode != M_ASYNC)
outb (STCR(c->port), STC_ABORTTX | STC_SNDSPC);
cx_cmd (c->port, CCR_DISTX);
} else if (! cx_transmit_enabled(c) && on) {
outb (CAR(c->port), c->num & 3);
cx_cmd (c->port, CCR_ENTX);
}
}
/*
* Get channel status.
*/
int cx_receive_enabled (cx_chan_t *c)
{
outb (CAR(c->port), c->num & 3);
return (inb (CSR(c->port)) & CSRA_RXEN) != 0;
}
int cx_transmit_enabled (cx_chan_t *c)
{
outb (CAR(c->port), c->num & 3);
return (inb (CSR(c->port)) & CSRA_TXEN) != 0;
}
unsigned long cx_get_baud (cx_chan_t *c)
{
return (c->opt.tcor.clk == CLK_EXT) ? 0 : c->txbaud;
}
int cx_get_loop (cx_chan_t *c)
{
return c->opt.tcor.llm ? 1 : 0;
}
int cx_get_nrzi (cx_chan_t *c)
{
return c->opt.rcor.encod == ENCOD_NRZI;
}
int cx_get_dpll (cx_chan_t *c)
{
return c->opt.rcor.dpll ? 1 : 0;
}
void cx_set_baud (cx_chan_t *c, unsigned long bps)
{
int clock, period;
c->txbaud = c->rxbaud = bps;
/* Set current channel number */
outb (CAR(c->port), c->num & 3);
if (bps) {
if (c->mode == M_ASYNC || c->opt.rcor.dpll || c->opt.tcor.llm) {
/* Receive baud - internal */
cx_clock (c->oscfreq, c->rxbaud, &clock, &period);
c->opt.rcor.clk = clock;
outb (RCOR(c->port), BYTE c->opt.rcor);
outb (RBPR(c->port), period);
} else {
/* Receive baud - external */
c->opt.rcor.clk = CLK_EXT;
outb (RCOR(c->port), BYTE c->opt.rcor);
outb (RBPR(c->port), 1);
}
/* Transmit baud - internal */
cx_clock (c->oscfreq, c->txbaud, &clock, &period);
c->opt.tcor.clk = clock;
c->opt.tcor.ext1x = 0;
outb (TBPR(c->port), period);
} else if (c->mode != M_ASYNC) {
/* External clock - disable local loopback and DPLL */
c->opt.tcor.llm = 0;
c->opt.rcor.dpll = 0;
/* Transmit baud - external */
c->opt.tcor.ext1x = 1;
c->opt.tcor.clk = CLK_EXT;
outb (TBPR(c->port), 1);
/* Receive baud - external */
c->opt.rcor.clk = CLK_EXT;
outb (RCOR(c->port), BYTE c->opt.rcor);
outb (RBPR(c->port), 1);
}
if (c->opt.tcor.llm)
outb (COR2(c->port), (BYTE c->hopt.cor2) & ~3);
else
outb (COR2(c->port), BYTE c->hopt.cor2);
outb (TCOR(c->port), BYTE c->opt.tcor);
}
void cx_set_loop (cx_chan_t *c, int on)
{
if (! c->txbaud)
return;
c->opt.tcor.llm = on ? 1 : 0;
cx_set_baud (c, c->txbaud);
}
void cx_set_dpll (cx_chan_t *c, int on)
{
if (! c->txbaud)
return;
c->opt.rcor.dpll = on ? 1 : 0;
cx_set_baud (c, c->txbaud);
}
void cx_set_nrzi (cx_chan_t *c, int nrzi)
{
c->opt.rcor.encod = (nrzi ? ENCOD_NRZI : ENCOD_NRZ);
outb (CAR(c->port), c->num & 3);
outb (RCOR(c->port), BYTE c->opt.rcor);
}
static int cx_send (cx_chan_t *c, char *data, int len,
void *attachment)
{
unsigned char *buf;
port_t cnt_port, sts_port;
void **attp;
/* Set the current channel number. */
outb (CAR(c->port), c->num & 3);
/* Determine the buffer order. */
if (inb (DMABSTS(c->port)) & DMABSTS_NTBUF) {
if (inb (BTBSTS(c->port)) & BSTS_OWN24) {
buf = c->atbuf;
cnt_port = ATBCNT(c->port);
sts_port = ATBSTS(c->port);
attp = &c->attach[0];
} else {
buf = c->btbuf;
cnt_port = BTBCNT(c->port);
sts_port = BTBSTS(c->port);
attp = &c->attach[1];
}
} else {
if (inb (ATBSTS(c->port)) & BSTS_OWN24) {
buf = c->btbuf;
cnt_port = BTBCNT(c->port);
sts_port = BTBSTS(c->port);
attp = &c->attach[1];
} else {
buf = c->atbuf;
cnt_port = ATBCNT(c->port);
sts_port = ATBSTS(c->port);
attp = &c->attach[0];
}
}
/* Is it busy? */
if (inb (sts_port) & BSTS_OWN24)
return -1;
memcpy (buf, data, len);
*attp = attachment;
/* Start transmitter. */
outw (cnt_port, len);
outb (sts_port, BSTS_EOFR | BSTS_INTR | BSTS_OWN24);
/* Enable TXMPTY interrupt,
* to catch the case when the second buffer is empty. */
if (c->mode != M_ASYNC) {
if ((inb(ATBSTS(c->port)) & BSTS_OWN24) &&
(inb(BTBSTS(c->port)) & BSTS_OWN24)) {
outb (IER(c->port), IER_RXD | IER_TXD | IER_TXMPTY);
} else
outb (IER(c->port), IER_RXD | IER_TXD);
}
return 0;
}
/*
* Number of free buffs
*/
int cx_buf_free (cx_chan_t *c)
{
return ! (inb (ATBSTS(c->port)) & BSTS_OWN24) +
! (inb (BTBSTS(c->port)) & BSTS_OWN24);
}
/*
* Send the data packet.
*/
int cx_send_packet (cx_chan_t *c, char *data, int len, void *attachment)
{
if (len >= DMABUFSZ)
return -2;
if (c->mode == M_ASYNC) {
static char buf [DMABUFSZ];
char *p, *t = buf;
/* Async -- double all nulls. */
for (p=data; p < data+len && t < buf+DMABUFSZ-1; ++p)
if ((*t++ = *p) == 0)
*t++ = 0;
return cx_send (c, buf, t-buf, attachment);
}
return cx_send (c, data, len, attachment);
}
static int cx_receive_interrupt (cx_chan_t *c)
{
unsigned short risr;
int len = 0, rbsz;
++c->rintr;
risr = inw (RISR(c->port));
/* Compute optimal receiver buffer length */
rbsz = cx_compute_buf_len(c);
if (c->mode == M_ASYNC && (risr & RISA_TIMEOUT)) {
unsigned long rcbadr = (unsigned short) inw (RCBADRL(c->port)) |
(long) inw (RCBADRU(c->port)) << 16;
unsigned char *buf = 0;
port_t cnt_port = 0, sts_port = 0;
if (rcbadr >= c->brphys && rcbadr < c->brphys+DMABUFSZ) {
buf = c->brbuf;
len = rcbadr - c->brphys;
cnt_port = BRBCNT(c->port);
sts_port = BRBSTS(c->port);
} else if (rcbadr >= c->arphys && rcbadr < c->arphys+DMABUFSZ) {
buf = c->arbuf;
len = rcbadr - c->arphys;
cnt_port = ARBCNT(c->port);
sts_port = ARBSTS(c->port);
}
if (len) {
c->ibytes += len;
c->received_data = buf;
c->received_len = len;
/* Restart receiver. */
outw (cnt_port, rbsz);
outb (sts_port, BSTS_OWN24);
}
return (REOI_TERMBUFF);
}
/* Receive errors. */
if (risr & RIS_OVERRUN) {
++c->ierrs;
if (c->call_on_err)
c->call_on_err (c, CX_OVERRUN);
} else if (c->mode != M_ASYNC && (risr & RISH_CRCERR)) {
++c->ierrs;
if (c->call_on_err)
c->call_on_err (c, CX_CRC);
} else if (c->mode != M_ASYNC && (risr & (RISH_RXABORT | RISH_RESIND))) {
++c->ierrs;
if (c->call_on_err)
c->call_on_err (c, CX_FRAME);
} else if (c->mode == M_ASYNC && (risr & RISA_PARERR)) {
++c->ierrs;
if (c->call_on_err)
c->call_on_err (c, CX_CRC);
} else if (c->mode == M_ASYNC && (risr & RISA_FRERR)) {
++c->ierrs;
if (c->call_on_err)
c->call_on_err (c, CX_FRAME);
} else if (c->mode == M_ASYNC && (risr & RISA_BREAK)) {
if (c->call_on_err)
c->call_on_err (c, CX_BREAK);
} else if (! (risr & RIS_EOBUF)) {
++c->ierrs;
} else {
/* Handle received data. */
len = (risr & RIS_BB) ? inw(BRBCNT(c->port)) : inw(ARBCNT(c->port));
if (len > DMABUFSZ) {
/* Fatal error: actual DMA transfer size
* exceeds our buffer size. It could be caused
* by incorrectly programmed DMA register or
* hardware fault. Possibly, should panic here. */
len = DMABUFSZ;
} else if (c->mode != M_ASYNC && ! (risr & RIS_EOFR)) {
/* The received frame does not fit in the DMA buffer.
* It could be caused by serial lie noise,
* or if the peer has too big MTU. */
if (! c->overflow) {
if (c->call_on_err)
c->call_on_err (c, CX_OVERFLOW);
c->overflow = 1;
++c->ierrs;
}
} else if (! c->overflow) {
if (risr & RIS_BB) {
c->received_data = c->brbuf;
c->received_len = len;
} else {
c->received_data = c->arbuf;
c->received_len = len;
}
if (c->mode != M_ASYNC)
++c->ipkts;
c->ibytes += len;
} else
c->overflow = 0;
}
/* Restart receiver. */
if (! (inb (ARBSTS(c->port)) & BSTS_OWN24)) {
outw (ARBCNT(c->port), rbsz);
outb (ARBSTS(c->port), BSTS_OWN24);
}
if (! (inb (BRBSTS(c->port)) & BSTS_OWN24)) {
outw (BRBCNT(c->port), rbsz);
outb (BRBSTS(c->port), BSTS_OWN24);
}
/* Discard exception characters. */
if ((risr & RISA_SCMASK) && c->aopt.cor2.ixon)
return (REOI_DISCEXC);
else
return (0);
}
static void cx_transmit_interrupt (cx_chan_t *c)
{
unsigned char tisr;
int len = 0;
++c->tintr;
tisr = inb (TISR(c->port));
if (tisr & TIS_UNDERRUN) { /* Transmit underrun error */
if (c->call_on_err)
c->call_on_err (c, CX_UNDERRUN);
++c->oerrs;
} else if (tisr & (TIS_EOBUF | TIS_TXEMPTY | TIS_TXDATA)) {
/* Call processing function */
if (tisr & TIS_BB) {
len = inw(BTBCNT(c->port));
if (c->call_on_tx)
c->call_on_tx (c, c->attach[1], len);
} else {
len = inw(ATBCNT(c->port));
if (c->call_on_tx)
c->call_on_tx (c, c->attach[0], len);
}
if (c->mode != M_ASYNC && len != 0)
++c->opkts;
c->obytes += len;
}
/* Enable TXMPTY interrupt,
* to catch the case when the second buffer is empty. */
if (c->mode != M_ASYNC) {
if ((inb (ATBSTS(c->port)) & BSTS_OWN24) &&
(inb (BTBSTS(c->port)) & BSTS_OWN24)) {
outb (IER(c->port), IER_RXD | IER_TXD | IER_TXMPTY);
} else
outb (IER(c->port), IER_RXD | IER_TXD);
}
}
void cx_int_handler (cx_board_t *b)
{
unsigned char livr;
cx_chan_t *c;
while (! (inw (BSR(b->port)) & BSR_NOINTR)) {
/* Enter the interrupt context, using IACK bus cycle.
Read the local interrupt vector register. */
livr = inb (IACK(b->port, BRD_INTR_LEVEL));
c = b->chan + (livr>>2 & 0xf);
if (c->type == T_NONE)
continue;
switch (livr & 3) {
case LIV_MODEM: /* modem interrupt */
++c->mintr;
if (c->call_on_msig)
c->call_on_msig (c);
outb (MEOIR(c->port), 0);
break;
case LIV_EXCEP: /* receive exception */
case LIV_RXDATA: /* receive interrupt */
outb (REOIR(c->port), cx_receive_interrupt (c));
if (c->call_on_rx && c->received_data) {
c->call_on_rx (c, c->received_data,
c->received_len);
c->received_data = 0;
}
break;
case LIV_TXDATA: /* transmit interrupt */
cx_transmit_interrupt (c);
outb (TEOIR(c->port), 0);
break;
}
}
}
/*
* Register event processing functions
*/
void cx_register_transmit (cx_chan_t *c,
void (*func) (cx_chan_t *c, void *attachment, int len))
{
c->call_on_tx = func;
}
void cx_register_receive (cx_chan_t *c,
void (*func) (cx_chan_t *c, char *data, int len))
{
c->call_on_rx = func;
}
void cx_register_modem (cx_chan_t *c, void (*func) (cx_chan_t *c))
{
c->call_on_msig = func;
}
void cx_register_error (cx_chan_t *c, void (*func) (cx_chan_t *c, int data))
{
c->call_on_err = func;
}
/*
* Async protocol functions.
*/
/*
* Enable/disable transmitter.
*/
void cx_transmitter_ctl (cx_chan_t *c,int start)
{
outb (CAR(c->port), c->num & 3);
cx_cmd (c->port, start ? CCR_ENTX : CCR_DISTX);
}
/*
* Discard all data queued in transmitter.
*/
void cx_flush_transmit (cx_chan_t *c)
{
outb (CAR(c->port), c->num & 3);
cx_cmd (c->port, CCR_CLRTX);
}
/*
* Send the XON/XOFF flow control symbol.
*/
void cx_xflow_ctl (cx_chan_t *c, int on)
{
outb (CAR(c->port), c->num & 3);
outb (STCR(c->port), STC_SNDSPC | (on ? STC_SSPC_1 : STC_SSPC_2));
}
/*
* Send the break signal for a given number of milliseconds.
*/
void cx_send_break (cx_chan_t *c, int msec)
{
static unsigned char buf [128];
unsigned char *p;
p = buf;
*p++ = 0; /* extended transmit command */
*p++ = 0x81; /* send break */
if (msec > 10000) /* max 10 seconds */
msec = 10000;
if (msec < 10) /* min 10 msec */
msec = 10;
while (msec > 0) {
int ms = 250; /* 250 msec */
if (ms > msec)
ms = msec;
msec -= ms;
*p++ = 0; /* extended transmit command */
*p++ = 0x82; /* insert delay */
*p++ = ms;
}
*p++ = 0; /* extended transmit command */
*p++ = 0x83; /* stop break */
cx_send (c, buf, p-buf, 0);
}
/*
* Set async parameters.
*/
void cx_set_async_param (cx_chan_t *c, int baud, int bits, int parity,
int stop2, int ignpar, int rtscts,
int ixon, int ixany, int symstart, int symstop)
{
int clock, period;
cx_cor1_async_t cor1;
/* Set character length and parity mode. */
BYTE cor1 = 0;
cor1.charlen = bits - 1;
cor1.parmode = parity ? PARM_NORMAL : PARM_NOPAR;
cor1.parity = parity==1 ? PAR_ODD : PAR_EVEN;
cor1.ignpar = ignpar ? 1 : 0;
/* Enable/disable hardware CTS. */
c->aopt.cor2.ctsae = rtscts ? 1 : 0;
/* Enable extended transmit command mode.
* Unfortunately, there is no other method for sending break. */
c->aopt.cor2.etc = 1;
/* Enable/disable hardware XON/XOFF. */
c->aopt.cor2.ixon = ixon ? 1 : 0;
c->aopt.cor2.ixany = ixany ? 1 : 0;
/* Set the number of stop bits. */
if (stop2)
c->aopt.cor3.stopb = STOPB_2;
else
c->aopt.cor3.stopb = STOPB_1;
/* Disable/enable passing XON/XOFF chars to the host. */
c->aopt.cor3.scde = ixon ? 1 : 0;
c->aopt.cor3.flowct = ixon ? FLOWCC_NOTPASS : FLOWCC_PASS;
c->aopt.schr1 = symstart; /* XON */
c->aopt.schr2 = symstop; /* XOFF */
/* Set current channel number. */
outb (CAR(c->port), c->num & 3);
/* Set up clock values. */
if (baud) {
c->rxbaud = c->txbaud = baud;
/* Receiver. */
cx_clock (c->oscfreq, c->rxbaud, &clock, &period);
c->opt.rcor.clk = clock;
outb (RCOR(c->port), BYTE c->opt.rcor);
outb (RBPR(c->port), period);
/* Transmitter. */
cx_clock (c->oscfreq, c->txbaud, &clock, &period);
c->opt.tcor.clk = clock;
c->opt.tcor.ext1x = 0;
outb (TCOR(c->port), BYTE c->opt.tcor);
outb (TBPR(c->port), period);
}
outb (COR2(c->port), BYTE c->aopt.cor2);
outb (COR3(c->port), BYTE c->aopt.cor3);
outb (SCHR1(c->port), c->aopt.schr1);
outb (SCHR2(c->port), c->aopt.schr2);
if (BYTE c->aopt.cor1 != BYTE cor1) {
BYTE c->aopt.cor1 = BYTE cor1;
outb (COR1(c->port), BYTE c->aopt.cor1);
/* Any change to COR1 require reinitialization. */
/* Unfortunately, it may cause transmitter glitches... */
cx_cmd (c->port, CCR_INITCH);
}
}
/*
* Set mode: M_ASYNC or M_HDLC.
* Both receiver and transmitter are disabled.
*/
int cx_set_mode (cx_chan_t *c, int mode)
{
if (mode == M_HDLC) {
if (c->type == T_ASYNC)
return -1;
if (c->mode == M_HDLC)
return 0;
c->mode = M_HDLC;
} else if (mode == M_ASYNC) {
if (c->type == T_SYNC_RS232 ||
c->type == T_SYNC_V35 ||
c->type == T_SYNC_RS449)
return -1;
if (c->mode == M_ASYNC)
return 0;
c->mode = M_ASYNC;
c->opt.tcor.ext1x = 0;
c->opt.tcor.llm = 0;
c->opt.rcor.dpll = 0;
c->opt.rcor.encod = ENCOD_NRZ;
if (! c->txbaud || ! c->rxbaud)
c->txbaud = c->rxbaud = 9600;
} else
return -1;
cx_setup_chan (c);
cx_start_chan (c, 0, 0);
cx_enable_receive (c, 0);
cx_enable_transmit (c, 0);
return 0;
}
/*
* Set port type for old models of Sigma
*/
void cx_set_port (cx_chan_t *c, int iftype)
{
if (c->board->type == B_SIGMA_XXX) {
switch (c->num) {
case 0:
if ((c->board->if0type != 0) == (iftype != 0))
return;
c->board->if0type = iftype;
c->board->bcr0 &= ~BCR0_UMASK;
if (c->board->if0type &&
(c->type==T_UNIV_RS449 || c->type==T_UNIV_V35))
c->board->bcr0 |= BCR0_UI_RS449;
outb (BCR0(c->board->port), c->board->bcr0);
break;
case 8:
if ((c->board->if8type != 0) == (iftype != 0))
return;
c->board->if8type = iftype;
c->board->bcr0b &= ~BCR0_UMASK;
if (c->board->if8type &&
(c->type==T_UNIV_RS449 || c->type==T_UNIV_V35))
c->board->bcr0b |= BCR0_UI_RS449;
outb (BCR0(c->board->port+0x10), c->board->bcr0b);
break;
}
}
}
/*
* Get port type for old models of Sigma
* -1 Fixed port type or auto detect
* 0 RS232
* 1 V35
* 2 RS449
*/
int cx_get_port (cx_chan_t *c)
{
int iftype;
if (c->board->type == B_SIGMA_XXX) {
switch (c->num) {
case 0:
iftype = c->board->if0type; break;
case 8:
iftype = c->board->if8type; break;
default:
return -1;
}
if (iftype)
switch (c->type) {
case T_UNIV_V35: return 1; break;
case T_UNIV_RS449: return 2; break;
default: return -1; break;
}
else
return 0;
} else
return -1;
}
void cx_intr_off (cx_board_t *b)
{
outb (BCR0(b->port), b->bcr0 & ~BCR0_IRQ_MASK);
if (b->chan[8].port || b->chan[12].port)
outb (BCR0(b->port+0x10), b->bcr0b & ~BCR0_IRQ_MASK);
}
void cx_intr_on (cx_board_t *b)
{
outb (BCR0(b->port), b->bcr0);
if (b->chan[8].port || b->chan[12].port)
outb (BCR0(b->port+0x10), b->bcr0b);
}
int cx_checkintr (cx_board_t *b)
{
return (!(inw (BSR(b->port)) & BSR_NOINTR));
}