C++ (Cpp) multitrans Examples

Example #1

File: usbdwc.c Project: sirnewton01/rpi-9front

static long
eptrans(Ep *ep, int rw, void *a, long n)
{
	Hostchan *hc;

	if(ep->clrhalt){
		ep->clrhalt = 0;
		if(ep->mode != OREAD)
			ep->toggle[Write] = DATA0;
		if(ep->mode != OWRITE)
			ep->toggle[Read] = DATA0;
	}
	hc = chanalloc(ep);
	if(waserror()){
		ep->toggle[rw] = hc->hctsiz & Pid;
		chanrelease(ep, hc);
		if(strcmp(up->errstr, Estalled) == 0)
			return 0;
		nexterror();
	}
	chansetup(hc, ep);
	if(rw == Read && ep->ttype == Tbulk)
		n = multitrans(ep, hc, rw, a, n);
	else{
		n = chanio(ep, hc, rw == Read? Epin : Epout, ep->toggle[rw],
			a, n);
		ep->toggle[rw] = hc->hctsiz & Pid;
	}
	chanrelease(ep, hc);
	poperror();
	return n;
}

Example #2

File: usbdwc.c Project: Mekapaedia/inferno-rpi

static long
ctltrans(Ep *ep, uchar *req, long n)
{
	Hostchan *hc;
	Epio *epio;
	Block *b;
	uchar *data;
	int datalen;

	epio = ep->aux;
	if(epio->cb != nil){
		freeb(epio->cb);
		epio->cb = nil;
	}
	if(n < Rsetuplen)
		error(Ebadlen);
	if(req[Rtype] & Rd2h){
		datalen = GET2(req+Rcount);
		if(datalen <= 0 || datalen > Maxctllen)
			error(Ebadlen);
		/* XXX cache madness */
               	epio->cb = b = allocb(ROUND(datalen, ep->maxpkt) + CACHELINESZ);
               	b->wp = (uchar*)ROUND((uintptr)b->wp, CACHELINESZ);
		//epio->cb = b = allocb(ROUND(datalen, ep->maxpkt));
		//assert(((uintptr)b->wp & (BLOCKALIGN-1)) == 0);
		memset(b->wp, 0x55, b->lim - b->wp);
		cachedwbinvse(b->wp, b->lim - b->wp);
		data = b->wp;
	}else{
		b = nil;
		datalen = n - Rsetuplen;
		data = req + Rsetuplen;
	}
	hc = chanalloc(ep);
	if(waserror()){
		chanrelease(ep, hc);
		if(strcmp(up->env->errstr, Estalled) == 0)
			return 0;
		nexterror();
	}
	chansetup(hc, ep);
	chanio(ep, hc, Epout, SETUP, req, Rsetuplen);
	if(req[Rtype] & Rd2h){
		if(ep->dev->hub <= 1){
			ep->toggle[Read] = DATA1;
			b->wp += multitrans(ep, hc, Read, data, datalen);
		}else
			b->wp += chanio(ep, hc, Epin, DATA1, data, datalen);
		chanio(ep, hc, Epout, DATA1, nil, 0);
		n = Rsetuplen;
	}else{
		if(datalen > 0)
			chanio(ep, hc, Epout, DATA1, data, datalen);
		chanio(ep, hc, Epin, DATA1, nil, 0);
		n = Rsetuplen + datalen;
	}
	chanrelease(ep, hc);
	poperror();
	return n;
}