static void
etherfree(Ether *e)
{
int i;
Buf *bp;
if(e->free != nil)
e->free(e);
closedev(e->epin);
closedev(e->epout);
if(e->rc == nil){ /* not really started */
free(e);
return;
}
for(i = 0; i < e->nconns; i++)
if(e->conns[i] != nil){
while((bp = nbrecvp(e->conns[i]->rc)) != nil)
free(bp);
chanfree(e->conns[i]->rc);
free(e->conns[i]);
}
shutdownchan(e->bc);
shutdownchan(e->rc);
shutdownchan(e->wc);
e->epin = e->epout = nil;
devctl(e->dev, "detach");
free(e);
}
void
fswrite(Req *r)
{
char msg[256], *f[4];
int nf, speed;
snprint(msg, sizeof(msg), "%.*s", r->ifcall.count, r->ifcall.data);
nf = tokenize(msg, f, nelem(f));
if(nf < 2){
respond(r, "invalid ctl message");
return;
}
if(strcmp(f[0], "speed") == 0){
Dev *d;
speed = atoi(f[1]);
Setup:
if((d = setupep(audiodev, audioepout, speed)) == nil){
responderror(r);
return;
}
closedev(d);
if(audioepin != nil && audioepin != audioepout){
if(d = setupep(audiodev, audioepin, speed))
closedev(d);
}
audiofreq = speed;
} else if(strcmp(f[0], "delay") == 0){
audiodelay = atoi(f[1]);
speed = audiofreq;
goto Setup;
}
r->ofcall.count = r->ifcall.count;
respond(r, nil);
}
static int
fsopen(Usbfs*_1, Fid *fid, int mode)
{
int qd;
int rc;
Dev *dev;
int (*xfsopen)(Usbfs *fs, Fid *f, int mode);
qd = qiddev(fid->qid.path);
if(qd == Dtop)
return 0;
qlock(&fslck);
if(fs[qd] == nil){
qunlock(&fslck);
werrstr(Eio);
return -1;
}
dev = fs[qd]->dev;
if(dev != nil)
incref(&dev->Ref);
xfsopen = fs[qd]->open;
qunlock(&fslck);
if(xfsopen != nil)
rc = xfsopen(fs[qd], fid, mode);
else
rc = 0;
if(dev != nil)
closedev(dev);
return rc;
}
static int
dirgen(Usbfs*_1, Qid _2, int n, Dir *d, void *_3)
{
int i;
Dev *dev;
char *nm;
qlock(&fslck);
for(i = 0; i < nfs; i++)
if(fs[i] != nil && n-- == 0){
d->qid.type = QTDIR;
d->qid.path = mkqid(i, Qdir);
d->qid.vers = 0;
dev = fs[i]->dev;
if(dev != nil)
incref(&dev->Ref);
nm = d->name;
fs[i]->stat(fs[i], d->qid, d);
d->name = nm;
strncpy(d->name, fs[i]->name, Namesz);
if(dev != nil)
closedev(dev);
qunlock(&fslck);
return 0;
}
qunlock(&fslck);
return -1;
}
static void
etherwriteproc(void *a)
{
Ether *e = a;
Buf *bp;
Channel *wc;
threadsetname("etherwrite");
wc = e->wc;
while(e->exiting == 0){
bp = recvp(wc);
if(bp == nil || e->exiting != 0){
free(bp);
break;
}
e->nout++;
if(e->bwrite(e, bp) < 0)
e->noerrs++;
if(isloopback(e, bp) && e->exiting == 0)
sendp(e->rc, bp); /* send to input queue */
else
freebuf(e, bp);
}
deprint(2, "%s: writeproc exiting\n", argv0);
closedev(e->dev);
}
static void
portdetach(Hub *h, int p)
{
Dev *d;
Port *pp;
extern void usbfsgone(char*);
d = h->dev;
pp = &h->port[p];
/*
* Clear present, so that we detect an attach on reconnects.
*/
pp->sts &= ~(PSpresent|PSenable);
if(pp->state == Pdisabled)
return;
pp->state = Pdisabled;
dprint(2, "%s: %s: port %d: detached\n", argv0, d->dir, p);
if(pp->hub != nil){
closehub(pp->hub);
pp->hub = nil;
}
if(pp->devmaskp != nil)
putdevnb(pp->devmaskp, pp->devnb);
pp->devmaskp = nil;
if(pp->dev != nil){
devctl(pp->dev, "detach");
usbfsgone(pp->dev->dir);
closedev(pp->dev);
pp->dev = nil;
}
}
static int32_t
fsread(Usbfs*_1, Fid *fid, void *data, int32_t cnt, int64_t off)
{
int qd;
int rc;
Dev *dev;
Qid q;
int32_t (*xfsread)(Usbfs *fs, Fid *f, void *data, int32_t count,
int64_t );
q = fid->qid;
qd = qiddev(q.path);
if(qd == Dtop)
return usbdirread(nil, q, data, cnt, off, dirgen, nil);
qlock(&fslck);
if(fs[qd] == nil){
qunlock(&fslck);
werrstr(Eio);
return -1;
}
dev = fs[qd]->dev;
if(dev != nil)
incref(&dev->Ref);
xfsread = fs[qd]->read;
qunlock(&fslck);
rc = xfsread(fs[qd], fid, data, cnt, off);
if(dev != nil)
closedev(dev);
return rc;
}
static int32_t
fswrite(Usbfs*_1, Fid *fid, void *data, int32_t cnt, int64_t off)
{
int qd;
int rc;
Dev *dev;
int32_t (*xfswrite)(Usbfs *fs, Fid *f, void *data, int32_t count,
int64_t );
qd = qiddev(fid->qid.path);
if(qd == Dtop)
sysfatal("fswrite: not for usbd /");
qlock(&fslck);
if(fs[qd] == nil){
qunlock(&fslck);
werrstr(Eio);
return -1;
}
dev = fs[qd]->dev;
if(dev != nil)
incref(&dev->Ref);
xfswrite = fs[qd]->write;
qunlock(&fslck);
rc = xfswrite(fs[qd], fid, data, cnt, off);
if(dev != nil)
closedev(dev);
return rc;
}
static int
fsstat(Usbfs*_1, Qid qid, Dir *d)
{
int qd;
int rc;
Dev *dev;
int (*xfsstat)(Usbfs *fs, Qid q, Dir *d);
qd = qiddev(qid.path);
if(qd == Dtop){
d->qid = qid;
d->name = "usb";
d->length = 0;
d->mode = 0555|DMDIR;
return 0;
}
qlock(&fslck);
if(fs[qd] == nil){
qunlock(&fslck);
werrstr(Eio);
return -1;
}
xfsstat = fs[qd]->stat;
dev = fs[qd]->dev;
if(dev != nil)
incref(&dev->Ref);
qunlock(&fslck);
rc = xfsstat(fs[qd], qid, d);
if(dev != nil)
closedev(dev);
return rc;
}
UART::~UART()
{
if (_isOpen==TRUE)
closedev();
_file=0;
_tty=-1;
_isOpen=FALSE;
}
static void
etherreadproc(void *a)
{
int i, n, nwants;
Buf *bp, *dbp;
Ether *e = a;
threadsetname("etherread");
while(e->exiting == 0){
bp = nbrecvp(e->rc);
if(bp == nil){
bp = allocbuf(e); /* leak() may think we leak */
if(e->bread(e, bp) < 0){
freebuf(e, bp);
break;
}
if(bp->ndata == 0){
/* may be a short packet; continue */
if(0)dprint(2, "%s: read: short\n", argv0);
freebuf(e, bp);
continue;
}else
setbuftype(bp);
}
e->nin++;
nwants = 0;
for(i = 0; i < e->nconns; i++)
nwants += cwantsbp(e->conns[i], bp);
for(i = 0; nwants > 0 && i < e->nconns; i++)
if(cwantsbp(e->conns[i], bp)){
n = bp->ndata;
if(e->conns[i]->type == -2 && n > 64)
n = 64;
if(nwants-- == 1){
bp->ndata = n;
dbp = bp;
bp = nil;
}else{
dbp = allocbuf(e);
memmove(dbp->rp, bp->rp, n);
dbp->ndata = n;
dbp->type = bp->type;
}
if(nbsendp(e->conns[i]->rc, dbp) == 0){
deprint(2, "%s: (in) packet lost\n", argv0);
e->nierrs++;
freebuf(e, dbp);
}
}
freebuf(e, bp);
}
deprint(2, "%s: writeproc exiting\n", argv0);
etherexiting(e);
closedev(e->dev);
usbfsdel(&e->fs);
}
static int
openeps(Ether *e, int epin, int epout)
{
e->epin = openep(e->dev, epin);
if(e->epin == nil){
fprint(2, "ether: in: openep %d: %r\n", epin);
return -1;
}
if(epout == epin){
incref(e->epin);
e->epout = e->epin;
}else
e->epout = openep(e->dev, epout);
if(e->epout == nil){
fprint(2, "ether: out: openep %d: %r\n", epout);
closedev(e->epin);
return -1;
}
if(e->epin == e->epout)
opendevdata(e->epin, ORDWR);
else{
opendevdata(e->epin, OREAD);
opendevdata(e->epout, OWRITE);
}
if(e->epin->dfd < 0 || e->epout->dfd < 0){
fprint(2, "ether: open i/o ep data: %r\n");
closedev(e->epin);
closedev(e->epout);
return -1;
}
dprint(2, "ether: ep in %s maxpkt %d; ep out %s maxpkt %d\n",
e->epin->dir, e->epin->maxpkt, e->epout->dir, e->epout->maxpkt);
/* time outs are not activated for I/O endpoints */
if(usbdebug > 2 || etherdebug > 2){
devctl(e->epin, "debug 1");
devctl(e->epout, "debug 1");
devctl(e->dev, "debug 1");
}
return 0;
}
static void
portreset(Hub *h, int p)
{
int sts;
Dev *d, *nd;
Port *pp;
d = h->dev;
pp = &h->port[p];
nd = pp->dev;
dprint(2, "%s: %s: port %d: resetting\n", argv0, d->dir, p);
if(hubfeature(h, p, Fportreset, 1) < 0){
dprint(2, "%s: %s: port %d: reset: %r\n", argv0, d->dir, p);
goto Fail;
}
sleep(Resetdelay);
sts = portstatus(h, p);
if(sts < 0)
goto Fail;
if((sts & PSenable) == 0){
dprint(2, "%s: %s: port %d: not enabled?\n", argv0, d->dir, p);
hubfeature(h, p, Fportenable, 1);
sts = portstatus(h, p);
if((sts & PSenable) == 0)
goto Fail;
}
nd = pp->dev;
opendevdata(nd, ORDWR);
if(usbcmd(nd, Rh2d|Rstd|Rdev, Rsetaddress, nd->id, 0, nil, 0) < 0){
dprint(2, "%s: %s: port %d: setaddress: %r\n", argv0, d->dir, p);
goto Fail;
}
if(devctl(nd, "address") < 0){
dprint(2, "%s: %s: port %d: set address: %r\n", argv0, d->dir, p);
goto Fail;
}
if(usbcmd(nd, Rh2d|Rstd|Rdev, Rsetconf, 1, 0, nil, 0) < 0){
dprint(2, "%s: %s: port %d: setconf: %r\n", argv0, d->dir, p);
unstall(nd, nd, Eout);
if(usbcmd(nd, Rh2d|Rstd|Rdev, Rsetconf, 1, 0, nil, 0) < 0)
goto Fail;
}
if(nd->dfd >= 0)
close(nd->dfd);
return;
Fail:
pp->state = Pdisabled;
pp->sts = 0;
if(pp->hub != nil)
pp->hub = nil; /* hub closed by enumhub */
hubfeature(h, p, Fportenable, 0);
if(nd != nil)
devctl(nd, "detach");
closedev(nd);
}
static int
fswalk(Usbfs*_1, Fid *fid, char *name)
{
Qid q;
int qd, qf;
int i;
int rc;
Dev *dev;
Dir d;
int (*xfswalk)(Usbfs *fs, Fid *f, char *name);
q = fid->qid;
qd = qiddev(q.path);
qf = qidfile(q.path);
q.type = QTDIR;
q.vers = 0;
if(strcmp(name, "..") == 0)
if(qd == Dtop || qf == Qdir){
q.path = mkqid(Dtop, Qdir);
fid->qid = q;
return 0;
}
if(qd != 0){
qlock(&fslck);
if(fs[qd] == nil){
qunlock(&fslck);
werrstr(Eio);
return -1;
}
dev = fs[qd]->dev;
if(dev != nil)
incref(&dev->Ref);
xfswalk = fs[qd]->walk;
qunlock(&fslck);
rc = xfswalk(fs[qd], fid, name);
if(dev != nil)
closedev(dev);
return rc;
}
qlock(&fslck);
for(i = 0; i < nfs; i++)
if(fs[i] != nil && strcmp(name, fs[i]->name) == 0){
q.path = mkqid(i, Qdir);
fs[i]->stat(fs[i], q, &d); /* may be a file */
fid->qid = d.qid;
qunlock(&fslck);
return 0;
}
qunlock(&fslck);
werrstr(Enotfound);
return -1;
}
static void
statusreader(void *u)
{
Serialport *p;
Serial *ser;
p = u;
ser = p->s;
threadsetname("statusreaderproc");
while(plreadstatus(p) >= 0)
;
fprint(2, "serial: statusreader exiting\n");
closedev(ser->dev);
}
void
threadmain(int argc, char **argv)
{
Dev *yd;
char *devdir = nil;
Ep *ep;
int csps[] = {YurexCSP, 0};
int i;
if(finddevs(matchdevcsp, csps, &devdir, 1) < 1){
fprint(2, "No yurex device\n");
threadexitsall("yurex not found");
}
yd = opendev(devdir);
if(yd == nil)
sysfatal("opendev: %r");
if(configdev(yd)<0)
sysfatal("configdev: %r");
for(i = 0; i < nelem(yd->usb->ep); i++){
if((ep = yd->usb->ep[i]) == nil)
break;
if(ep->type == Eintr && ep->dir == Ein)
if(ep->iface->csp == YurexCSP){
yc.ep = openep(yd, ep->id);
if(yc.ep == nil)
sysfatal("YUREX: %s: openep %d: %r\n", yd->dir, ep->id);
if(opendevdata(yc.ep, OREAD) < 0){
fprint(2, "YUERX: %s: opendevdata: %r\n", yc.ep->dir);
closedev(yc.ep);
yc.ep = nil;
break;
}
fs.tree = alloctree(nil, nil, DMDIR|0777, destroyfile);
createfile(fs.tree->root, "bbu", nil, 0444, nil);
createfile(fs.tree->root, "mbbups", nil, 0444, nil);
threadpostmountsrv(&fs, "yurex", nil, MREPL|MCREATE);
proccreate(yurexwork, nil, Stack);
}
}
threadexits(nil);
}
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 void
closehub(Hub *h)
{
Hub **hl;
dprint(2, "%s: closing hub %#p\n", argv0, h);
for(hl = &hubs; *hl != nil; hl = &(*hl)->next)
if(*hl == h)
break;
if(*hl == nil)
sysfatal("closehub: no hub");
*hl = h->next;
nhubs--;
hubfail(h); /* detach all ports */
free(h->port);
assert(h->dev != nil);
devctl(h->dev, "detach");
closedev(h->dev);
free(h);
}
static void
usbfsdelnth(int i)
{
if(fs[i] != nil){
dprint(2, "%s: fsdel %s", argv0, fs[i]->name);
if(fs[i]->dev != nil){
dprint(2, " dev %#p ref %ld\n",
fs[i]->dev, fs[i]->dev->Ref.ref);
}else
dprint(2, "no dev\n");
if(fs[i]->end != nil)
fs[i]->end(fs[i]);
closedev(fs[i]->dev);
fsused--;
}
fs[i] = nil;
if(fsused == 0 && exitonclose != 0){
fprint(2, "%s: all file systems gone: exiting\n", argv0);
threadexitsall(nil);
}
}
static void
fsclunk(Usbfs*_1, Fid* fid)
{
int qd;
Dev *dev;
void (*xfsclunk)(Usbfs *fs, Fid *f);
dev = nil;
qd = qiddev(fid->qid.path);
qlock(&fslck);
if(qd != Dtop && fs[qd] != nil){
dev=fs[qd]->dev;
if(dev != nil)
incref(&dev->Ref);
xfsclunk = fs[qd]->clunk;
}else
xfsclunk = nil;
qunlock(&fslck);
if(xfsclunk != nil){
xfsclunk(fs[qd], fid);
}
if(dev != nil)
closedev(dev);
}
static void
fsclone(Usbfs*_1, Fid *o, Fid *n)
{
int qd;
Dev *dev;
void (*xfsclone)(Usbfs *fs, Fid *of, Fid *nf);
xfsclone = nil;
dev = nil;
qd = qiddev(o->qid.path);
qlock(&fslck);
if(qd != Dtop && fs[qd] != nil && fs[qd]->clone != nil){
dev = fs[qd]->dev;
if(dev != nil)
incref(&dev->Ref);
xfsclone = fs[qd]->clone;
}
qunlock(&fslck);
if(xfsclone != nil){
xfsclone(fs[qd], o, n);
}
if(dev != nil)
closedev(dev);
}
void
main(int argc, char *argv[])
{
char buf[32];
Dev *d, *ed;
Ep *e;
int i;
ARGBEGIN {
case 'D':
chatty9p++;
break;
case 'd':
usbdebug++;
break;
} ARGEND;
if(argc == 0)
usage();
if((d = getdev(*argv)) == nil)
sysfatal("getdev: %r");
audiodev = d;
/* parse descriptors, mark valid altc */
for(i = 0; i < nelem(d->usb->ddesc); i++)
parsedescr(d->usb->ddesc[i]);
for(i = 0; i < nelem(d->usb->ep); i++){
e = d->usb->ep[i];
if(e != nil && e->type == Eiso && e->iface != nil && e->iface->csp == CSP(Claudio, 2, 0)){
switch(e->dir){
case Ein:
if(audioepin != nil)
continue;
audioepin = e;
break;
case Eout:
if(audioepout != nil)
continue;
audioepout = e;
break;
case Eboth:
if(audioepin != nil && audioepout != nil)
continue;
if(audioepin == nil)
audioepin = e;
if(audioepout == nil)
audioepout = e;
break;
}
if((ed = setupep(audiodev, e, audiofreq)) == nil){
fprint(2, "setupep: %r\n");
if(e == audioepin)
audioepin = nil;
if(e == audioepout)
audioepout = nil;
continue;
}
closedev(ed);
}
}
if(audioepout == nil)
sysfatal("no endpoints found");
fs.tree = alloctree(user, "usb", DMDIR|0555, nil);
createfile(fs.tree->root, "volume", user, 0666, nil);
snprint(buf, sizeof buf, "%d.audio", audiodev->id);
postsharesrv(&fs, nil, "usb", buf);
exits(0);
}
/*
* BUG: does not consider max. power avail.
*/
static Dev*
portattach(Hub *h, int p, int sts)
{
Dev *d;
Port *pp;
Dev *nd;
char fname[80];
char buf[40];
char *sp;
int mp;
int nr;
d = h->dev;
pp = &h->port[p];
nd = nil;
pp->state = Pattached;
dprint(2, "%s: %s: port %d attach sts %#x\n", argv0, d->dir, p, sts);
sleep(Connectdelay);
if(hubfeature(h, p, Fportenable, 1) < 0)
dprint(2, "%s: %s: port %d: enable: %r\n", argv0, d->dir, p);
sleep(Enabledelay);
if(hubfeature(h, p, Fportreset, 1) < 0){
dprint(2, "%s: %s: port %d: reset: %r\n", argv0, d->dir, p);
goto Fail;
}
sleep(Resetdelay);
sts = portstatus(h, p);
if(sts < 0)
goto Fail;
if((sts & PSenable) == 0){
dprint(2, "%s: %s: port %d: not enabled?\n", argv0, d->dir, p);
hubfeature(h, p, Fportenable, 1);
sts = portstatus(h, p);
if((sts & PSenable) == 0)
goto Fail;
}
sp = "full";
if(sts & PSslow)
sp = "low";
if(sts & PShigh)
sp = "high";
dprint(2, "%s: %s: port %d: attached status %#x\n", argv0, d->dir, p, sts);
if(devctl(d, "newdev %s %d", sp, p) < 0){
fprint(2, "%s: %s: port %d: newdev: %r\n", argv0, d->dir, p);
goto Fail;
}
seek(d->cfd, 0, 0);
nr = read(d->cfd, buf, sizeof(buf)-1);
if(nr == 0){
fprint(2, "%s: %s: port %d: newdev: eof\n", argv0, d->dir, p);
goto Fail;
}
if(nr < 0){
fprint(2, "%s: %s: port %d: newdev: %r\n", argv0, d->dir, p);
goto Fail;
}
buf[nr] = 0;
snprint(fname, sizeof(fname), "/dev/usb/%s", buf);
nd = opendev(fname);
if(nd == nil){
fprint(2, "%s: %s: port %d: opendev: %r\n", argv0, d->dir, p);
goto Fail;
}
if(usbdebug > 2)
devctl(nd, "debug 1");
if(opendevdata(nd, ORDWR) < 0){
fprint(2, "%s: %s: opendevdata: %r\n", argv0, nd->dir);
goto Fail;
}
if(usbcmd(nd, Rh2d|Rstd|Rdev, Rsetaddress, nd->id, 0, nil, 0) < 0){
dprint(2, "%s: %s: port %d: setaddress: %r\n", argv0, d->dir, p);
goto Fail;
}
if(devctl(nd, "address") < 0){
dprint(2, "%s: %s: port %d: set address: %r\n", argv0, d->dir, p);
goto Fail;
}
mp=getmaxpkt(nd, strcmp(sp, "low") == 0);
if(mp < 0){
dprint(2, "%s: %s: port %d: getmaxpkt: %r\n", argv0, d->dir, p);
goto Fail;
}else{
dprint(2, "%s; %s: port %d: maxpkt %d\n", argv0, d->dir, p, mp);
devctl(nd, "maxpkt %d", mp);
}
if((sts & PSslow) != 0 && strcmp(sp, "full") == 0)
dprint(2, "%s: %s: port %d: %s is full speed when port is low\n",
argv0, d->dir, p, nd->dir);
if(configdev(nd) < 0){
dprint(2, "%s: %s: port %d: configdev: %r\n", argv0, d->dir, p);
goto Fail;
}
/*
* We always set conf #1. BUG.
*/
if(usbcmd(nd, Rh2d|Rstd|Rdev, Rsetconf, 1, 0, nil, 0) < 0){
dprint(2, "%s: %s: port %d: setconf: %r\n", argv0, d->dir, p);
unstall(nd, nd, Eout);
if(usbcmd(nd, Rh2d|Rstd|Rdev, Rsetconf, 1, 0, nil, 0) < 0)
goto Fail;
}
dprint(2, "%s: %U\n", argv0, nd);
pp->state = Pconfiged;
dprint(2, "%s: %s: port %d: configed: %s\n",
argv0, d->dir, p, nd->dir);
return pp->dev = nd;
Fail:
pp->state = Pdisabled;
pp->sts = 0;
if(pp->hub != nil)
pp->hub = nil; /* hub closed by enumhub */
hubfeature(h, p, Fportenable, 0);
if(nd != nil)
devctl(nd, "detach");
closedev(nd);
return nil;
}
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);
}
static void
startdevproc(void *a)
{
Sarg *sa = a;
Dev *d;
Devtab *dt;
int argc;
char *args, *argse, **argv;
char *fname;
threadsetgrp(threadid());
d = sa->pp->dev;
dt = sa->dt;
args = sa->args;
argse = sa->args + sizeof sa->args;
argv = sa->argv;
fname = sa->fname;
sa->pp->devmaskp = &dt->devmask;
sa->pp->devnb = getdevnb(&dt->devmask);
if(sa->pp->devnb < 0){
sa->pp->devmaskp = nil;
sa->pp->devnb = 0;
}else
args = seprint(args, argse, "-N %d", sa->pp->devnb);
if(dt->args != nil)
seprint(args, argse, " %s", dt->args);
args = sa->args;
dprint(2, "%s: start: %s %s\n", argv0, dt->name, args);
argv[0] = dt->name;
argc = 1;
if(args[0] != 0)
argc += tokenize(args, argv+1, nelem(sa->argv)-2);
argv[argc] = nil;
if(dt->init == nil){
if(d->dfd > 0 ){
close(d->dfd);
d->dfd = -1;
}
rfork(RFCFDG);
open("/dev/null", OREAD);
open("/dev/cons", OWRITE);
open("/dev/cons", OWRITE);
xexec(sa->rc, argv[0], argv);
snprint(fname, sizeof(sa->fname), "/bin/usb/%s", dt->name);
xexec(sa->rc, fname, argv);
snprint(fname, sizeof(sa->fname), "/boot/%s", dt->name);
xexec(sa->rc, fname, argv);
if(cputype == nil)
cputype = getenv("cputype");
if(cputype != nil){
snprint(fname, sizeof(sa->fname), "/%s/bin/%s",
cputype, dt->name);
argv[0] = fname;
xexec(sa->rc, fname, argv);
}
fprint(2, "%s: %s: not found. can't exec\n", argv0, dt->name);
sendul(sa->rc, -1);
threadexits("exec");
}else{
sa->pp->dev = opendev(d->dir);
sendul(sa->rc, 0);
if(dt->init(d, argc, argv) < 0)
fprint(2, "%s: %s: %r\n", argv0, dt->name);
closedev(d);
free(sa);
}
threadexits(nil);
}