2002/0109/pc/uarti8250.c (diff list | history)

2001/1201/sys/src/9/pc/uarti8250.c:165,171 – 2002/0109/sys/src/9/pc/uarti8250.c:165,171 (short | long | prev | next)
Bug fix: print format. + 2 HW bugs HW bug fix: use sticky Ier. HW bug fix: try to unstick i8250. rsc Fri Mar 4 12:44:25 2005
2001/0527		ier = ctlr->sticky[Ier]; lcr = ctlr->sticky[Lcr]; snprint(p, READSTR, "b%d c%d d%d e%d l%d m%d p%c r%d s%d i%d\n"
2002/0109		"b%d c%d d%d e%d l%d m%d p%c r%d s%d i%d ier=%ux\n"
2001/0527		"dev(%d) type(%d) framing(%d) overruns(%d)%s%s%s%s\n", uart->baud,
2001/1201/sys/src/9/pc/uarti8250.c:178,183 – 2002/0109/sys/src/9/pc/uarti8250.c:178,184
2001/0527		(mcr & Rts) != 0, (lcr & Stb) ? 2: 1, ctlr->fena,
2002/0109		ier,
2001/0527		uart->dev, uart->type,
2001/1201/sys/src/9/pc/uarti8250.c:269,281 – 2002/0109/sys/src/9/pc/uarti8250.c:270,282
2001/0527		ilock(&uart->tlock); if(on){ ctlr->sticky[Ier] |= Ems; csr8w(ctlr, Ier, 0);
2002/0109		csr8w(ctlr, Ier, ctlr->sticky[Ier]);
2001/0527		uart->modem = 1; uart->cts = csr8r(ctlr, Msr) & Cts; } else{ ctlr->sticky[Ier] &= ~Ems; csr8w(ctlr, Ier, 0);
2002/0109		csr8w(ctlr, Ier, ctlr->sticky[Ier]);
2001/0527		uart->modem = 0; uart->cts = 1; }
2001/1201/sys/src/9/pc/uarti8250.c:525,531 – 2002/0109/sys/src/9/pc/uarti8250.c:526,532
2001/0527		ctlr = uart->regs; ctlr->sticky[Ier] = 0; csr8w(ctlr, Ier, 0);
2002/0109		csr8w(ctlr, Ier, ctlr->sticky[Ier]);
2001/0922		if(ctlr->iena != 0){ intrdisable(ctlr->irq, i8250interrupt, uart, ctlr->tbdf, uart->name);
2001/1201/sys/src/9/pc/uarti8250.c:562,567 – 2002/0109/sys/src/9/pc/uarti8250.c:563,580
2001/0527		(*uart->phys->dtr)(uart, 1); (*uart->phys->rts)(uart, 1);
2002/0109		/* * During startup, the i8259 interrupt controler is reset. * This may result in a lost interrupt from the i8250 uart. * The i8250 thinks the interrupt is still outstanding and does not * generate any further interrupts. To work around this we call the * interrupt handler to clear any pending inerrupt events. * Note this must be donw after setting Ier. */ if(ie) i8250interrupt(nil, uart);
2001/0922		} void*