static int
plsetparam(Serialport *p)
{
uint8_t buf[ParamReqSz];
int res;
Serial *ser;
ser = p->s;
PUT4(buf, p->baud);
if(p->stop == 1)
buf[4] = 0;
else if(p->stop == 2)
buf[4] = 2; /* see comment in getparam */
buf[5] = p->parity;
buf[6] = p->bits;
dsprint(2, "serial: setparam: ");
if(serialdebug)
dumpbuf(buf, sizeof buf);
res = usbcmd(ser->dev, Rh2d | Rclass | Riface, SetLineReq,
0, 0, buf, sizeof buf);
plmodemctl(p, p->mctl);
plgetparam(p); /* make sure our state corresponds */
dsprint(2, "serial: setparam res: %d\n", res);
return res;
}
static int
ftinit(Serialport *p)
{
Serial *ser;
uint timerval;
int res;
ser = p->s;
if(p->isjtag) {
res = ftdiwrite(p, FTSETFLOWCTRL, 0, FTDISABLEFLOWCTRL);
if(res < 0)
return -1;
res = ftdiread(p, FTSETLATENCYTIMER, 0, (uchar *)&timerval,
FTLATENCYTIMERSZ);
if(res < 0)
return -1;
dsprint(2, "serial: jtag latency timer is %d\n", timerval);
timerval = 2;
ftdiwrite(p, FTLATENCYDEFAULT, 0, FTSETLATENCYTIMER);
res = ftdiread(p, FTSETLATENCYTIMER, 0, (uchar *)&timerval,
FTLATENCYTIMERSZ);
if(res < 0)
return -1;
dsprint(2, "serial: jtag latency timer set to %d\n", timerval);
/* 0xb is the mask for lines. plug dependant? */
ftdiwrite(p, BMMPSSE|0x0b, 0, FTSETBITMODE);
}
incref(ser->dev);
proccreate(statusreader, p, 8*1024);
return 0;
}
static int
ftsendlines(Serialport *p)
{
int res;
dsprint(2, "serial: sendlines: %#2.2x\n", p->ctlstate);
res = setctl(p);
dsprint(2, "serial: sendlines res: %d\n", res);
return 0;
}
static int
plinit(Serialport *p)
{
char *st;
uint8_t *buf;
uint32_t csp, maxpkt, dno;
Serial *ser;
ser = p->s;
buf = emallocz(VendorReqSz, 1);
dsprint(2, "plinit\n");
csp = ser->dev->usb->csp;
maxpkt = ser->dev->maxpkt;
dno = ser->dev->usb->dno;
if((ser->type = revid(dno)) == TypeUnk)
ser->type = heuristicid(csp, maxpkt);
dsprint(2, "serial: type %d\n", ser->type);
vendorread(p, 0x8484, 0, buf);
vendorwrite(p, 0x0404, 0);
vendorread(p, 0x8484, 0, buf);
vendorread(p, 0x8383, 0, buf);
vendorread(p, 0x8484, 0, buf);
vendorwrite(p, 0x0404, 1);
vendorread(p, 0x8484, 0, buf);
vendorread(p, 0x8383, 0, buf);
vendorwrite(p, Dcr0Idx|DcrSet, Dcr0Init);
vendorwrite(p, Dcr1Idx|DcrSet, Dcr1Init);
if(ser->type == TypeHX)
vendorwrite(p, Dcr2Idx|DcrSet, Dcr2InitX);
else
vendorwrite(p, Dcr2Idx|DcrSet, Dcr2InitH);
plgetparam(p);
qunlock(ser);
free(buf);
st = emallocz(255, 1);
qlock(ser);
if(serialdebug)
serdumpst(p, st, 255);
dsprint(2, st);
free(st);
/* p gets freed by closedev, the process has a reference */
incref(ser->dev);
proccreate(statusreader, p, 8*1024);
return 0;
}
static int
vendorwrite(Serialport *p, int val, int index)
{
int res;
Serial *ser;
ser = p->s;
dsprint(2, "serial: vendorwrite val: 0x%x idx:%d\n", val, index);
res = usbcmd(ser->dev, Rh2d | Rvendor | Rdev, VendorWriteReq,
val, index, nil, 0);
dsprint(2, "serial: vendorwrite res:%d\n", res);
return res;
}
static int
vendorread(Serialport *p, int val, int index, uint8_t *buf)
{
int res;
Serial *ser;
ser = p->s;
dsprint(2, "serial: vendorread val: 0x%x idx:%d buf:%p\n",
val, index, buf);
res = usbcmd(ser->dev, Rd2h | Rvendor | Rdev, VendorReadReq,
val, index, buf, 1);
dsprint(2, "serial: vendorread res:%d\n", res);
return res;
}
static int
ftsetparam(Serialport *p)
{
int res;
ushort val;
ulong bauddiv;
val = 0;
if(p->stop == 1)
val |= FTSETDATASTOPBITS1;
else if(p->stop == 2)
val |= FTSETDATASTOPBITS2;
else if(p->stop == 15)
val |= FTSETDATASTOPBITS15;
switch(p->parity) {
case 0:
val |= FTSETDATAParNONE;
break;
case 1:
val |= FTSETDATAParODD;
break;
case 2:
val |= FTSETDATAParEVEN;
break;
case 3:
val |= FTSETDATAParMARK;
break;
case 4:
val |= FTSETDATAParSPACE;
break;
};
dsprint(2, "serial: setparam\n");
res = ftdiwrite(p, val, 0, FTSETDATA);
if(res < 0)
return res;
res = ftmodemctl(p, p->mctl);
if(res < 0)
return res;
bauddiv = ftbaudcalcdiv(p->s, p->baud);
res = ftdiwrite(p, bauddiv, (bauddiv>>16) & 1, FTSETBAUDRATE);
dsprint(2, "serial: setparam res: %d\n", res);
return res;
}
static int
ftdiread(Serialport *p, int index, int req, uchar *buf, int len)
{
int res;
Serial *ser;
ser = p->s;
if(req != FTGETE2READ)
index |= p->interfc + 1;
dsprint(2, "serial: ftdiread %#p [%d] req: %#x val: %#x idx:%d buf:%p len:%d\n",
p, p->interfc, req, 0, index, buf, len);
res = usbcmd(ser->dev, Rd2h | Rftdireq | Rdev, req, 0, index, buf, len);
dsprint(2, "serial: ftdiread res:%d\n", res);
return res;
}
static int
ftdiwrite(Serialport *p, int val, int index, int req)
{
int res;
Serial *ser;
ser = p->s;
if(req != FTGETE2READ || req != FTSETE2ERASE || req != FTSETBAUDRATE)
index |= p->interfc + 1;
dsprint(2, "serial: ftdiwrite %#p [%d] req: %#x val: %#x idx:%d\n",
p, p->interfc, req, val, index);
res = usbcmd(ser->dev, Rh2d | Rftdireq | Rdev, req, val, index, nil, 0);
dsprint(2, "serial: ftdiwrite res:%d\n", res);
return res;
}
static void
statusreader(void *u)
{
Areader *a;
Channel *c;
Packser *pk;
Serialport *p;
Serial *ser;
int cl;
p = u;
ser = p->s;
threadsetname("statusreader thread");
/* big buffering, fewer bytes lost */
c = chancreate(sizeof(Packser *), 128);
a = emallocz(sizeof(Areader), 1);
a->p = p;
a->c = c;
incref(ser->dev);
proccreate(epreader, a, 16*1024);
while((pk = recvp(c)) != nil){
memmove(p->data, pk->b, pk->nb);
p->ndata = pk->nb;
free(pk);
dsprint(2, "serial %p: status reader %d \n", p, p->ndata);
/* consume it all */
while(p->ndata != 0){
dsprint(2, "serial %p: status reader to consume: %d\n",
p, p->ndata);
cl = recvul(p->w4data);
if(cl < 0)
break;
cl = sendul(p->gotdata, 1);
if(cl < 0)
break;
}
}
shutdownchan(c);
devctl(ser->dev, "detach");
closedev(ser->dev);
usbfsdel(&p->fs);
}
static int
plgetparam(Serialport *p)
{
uint8_t buf[ParamReqSz];
int res;
Serial *ser;
ser = p->s;
res = usbcmd(ser->dev, Rd2h | Rclass | Riface, GetLineReq,
0, 0, buf, sizeof buf);
p->baud = GET4(buf);
/*
* with the Pl9 interface it is not possible to set `1.5' as stop bits
* for the prologic:
* 0 is 1 stop bit
* 1 is 1.5 stop bits
* 2 is 2 stop bits
*/
if(buf[4] == 1)
fprint(2, "warning, stop bit set to 1.5 unsupported");
else if(buf[4] == 0)
p->stop = 1;
else if(buf[4] == 2)
p->stop = 2;
p->parity = buf[5];
p->bits = buf[6];
dsprint(2, "serial: getparam: ");
if(serialdebug)
dumpbuf(buf, sizeof buf);
dsprint(2, "serial: getparam res: %d\n", res);
return res;
}
int
plmatch(char *info)
{
Cinfo *ip;
char buf[50];
for(ip = plinfo; ip->vid != 0; ip++){
snprint(buf, sizeof buf, "vid %#06x did %#06x",
ip->vid, ip->did);
dsprint(2, "serial: %s %s\n", buf, info);
if(strstr(info, buf) != nil)
return 0;
}
return -1;
}
static int
slinit(Serialport *p)
{
Serial *ser;
ser = p->s;
dsprint(2, "slinit\n");
slput(p, Enable, 1);
slops.getparam(p);
/* p gets freed by closedev, the process has a reference */
incref(ser->dev);
return 0;
}
int
ftmatch(Serial *ser, char *info)
{
Cinfo *ip;
char buf[50];
for(ip = ftinfo; ip->vid != 0; ip++){
snprint(buf, sizeof buf, "vid %#06x did %#06x", ip->vid, ip->did);
dsprint(2, "serial: %s %s\n", buf, info);
if(strstr(info, buf) != nil){
if(ser != nil){
qlock(ser);
ftgettype(ser);
qunlock(ser);
}
return 0;
}
}
return -1;
}
static int
plreadstatus(Serialport *p)
{
int nr, dfd;
char err[40];
uint8_t buf[VendorReqSz];
Serial *ser;
ser = p->s;
qlock(ser);
dsprint(2, "serial: reading from interrupt\n");
dfd = p->epintr->dfd;
qunlock(ser);
nr = read(dfd, buf, sizeof buf);
qlock(ser);
snprint(err, sizeof err, "%r");
dsprint(2, "serial: interrupt read %d %r\n", nr);
if(nr < 0 && strstr(err, "timed out") == nil){
dsprint(2, "serial: need to recover, status read %d %r\n", nr);
if(serialrecover(ser, nil, nil, err) < 0){
qunlock(ser);
return -1;
}
}
if(nr < 0)
dsprint(2, "serial: reading status: %r");
else if(nr >= sizeof buf - 1){
p->dcd = buf[8] & DcdStatus;
p->dsr = buf[8] & DsrStatus;
p->cts = buf[8] & BreakerrStatus;
p->ring = buf[8] & RingStatus;
p->cts = buf[8] & CtsStatus;
if(buf[8] & FrerrStatus)
p->nframeerr++;
if(buf[8] & ParerrStatus)
p->nparityerr++;
if(buf[8] & OvererrStatus)
p->novererr++;
} else
dsprint(2, "serial: bad status read %d\n", nr);
dsprint(2, "serial: finished read from interrupt %d\n", nr);
qunlock(ser);
return 0;
}
/* ser locked */
static void
ftgettype(Serial *ser)
{
int i, outhdrsz, dno, pksz;
ulong baudbase;
Conf *cnf;
pksz = Packsz;
/* Assume it is not the original SIO device for now. */
baudbase = ClockNew / 2;
outhdrsz = 0;
dno = ser->dev->usb->dno;
cnf = ser->dev->usb->conf[0];
ser->nifcs = 0;
for(i = 0; i < Niface; i++)
if(cnf->iface[i] != nil)
ser->nifcs++;
if(ser->nifcs > 1) {
/*
* Multiple interfaces. default assume FT2232C,
*/
if(dno == 0x500)
ser->type = FT2232C;
else if(dno == 0x600)
ser->type = FTKINDR;
else if(dno == 0x700) {
ser->type = FT2232H;
pksz = Maxpacksz;
} else if(dno == 0x800) {
ser->type = FT4232H;
pksz = Maxpacksz;
} else
ser->type = FT2232C;
if(hasjtag(ser->dev->usb))
ser->jtag = 0;
/*
* BM-type devices have a bug where dno gets set
* to 0x200 when serial is 0.
*/
if(dno < 0x500)
fprint(2, "serial: warning: dno %d too low for "
"multi-interface device\n", dno);
} else if(dno < 0x200) {
/* Old device. Assume it is the original SIO. */
ser->type = SIO;
baudbase = ClockOld/16;
outhdrsz = 1;
} else if(dno < 0x400)
/*
* Assume its an FT8U232AM (or FT8U245AM)
* (It might be a BM because of the iSerialNumber bug,
* but it will still work as an AM device.)
*/
ser->type = FT8U232AM;
else /* Assume it is an FT232BM (or FT245BM) */
ser->type = FT232BM;
ser->maxrtrans = ser->maxwtrans = pksz;
ser->baudbase = baudbase;
ser->outhdrsz = outhdrsz;
ser->inhdrsz = 2;
ser->Serialops = ftops;
dsprint (2, "serial: detected type: %#x\n", ser->type);
}
static void
epreader(void *u)
{
int dfd, rcount, cl, ntries, recov;
Areader *a;
Channel *c;
Packser *pk;
Serial *ser;
Serialport *p;
threadsetname("epreader proc");
a = u;
p = a->p;
ser = p->s;
c = a->c;
free(a);
qlock(ser); /* this makes the reader wait end of initialization too */
dfd = p->epin->dfd;
qunlock(ser);
ntries = 0;
pk = nil;
for(;;) {
if (pk == nil)
pk = emallocz(sizeof(Packser), 1);
Eagain:
rcount = read(dfd, pk->b, sizeof pk->b);
if(serialdebug > 5)
dsprint(2, "%d %#ux%#ux ", rcount, p->data[0],
p->data[1]);
if(rcount < 0) {
if(ntries++ > 100)
break;
qlock(ser);
recov = serialrecover(ser, p, nil, "epreader: bulkin error");
qunlock(ser);
if(recov >= 0)
goto Eagain;
}
if(rcount == 0)
continue;
if(rcount >= ser->inhdrsz) {
rcount = cpdata(ser, p, pk->b, pk->b, rcount);
if(rcount != 0) {
pk->nb = rcount;
cl = sendp(c, pk);
if(cl < 0) {
/*
* if it was a time-out, I don't want
* to give back an error.
*/
rcount = 0;
break;
}
} else
free(pk);
qlock(ser);
ser->recover = 0;
qunlock(ser);
ntries = 0;
pk = nil;
}
}
if(rcount < 0)
fprint(2, "%s: error reading %s: %r\n", argv0, p->name);
free(pk);
nbsendp(c, nil);
if(p->w4data != nil)
chanclose(p->w4data);
if(p->gotdata != nil)
chanclose(p->gotdata);
devctl(ser->dev, "detach");
closedev(ser->dev);
}
