Lines Matching +full:slave +full:- +full:mode

1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
29  * PIC driver for the 8259A Master and Slave PICs in PC/AT machines.
67 #define	SLAVE	1
69 #define	IMEN_MASK(ai)		(IRQ_MASK((ai)->at_irq))
93 #define	IRQ(ap, ai)	((ap)->at_irqbase + (ai)->at_irq)
153 static void i8259_init(struct atpic *pic, int slave);
185 	KASSERT(isrc->is_pic == &atpics[MASTER].at_pic,
193  * The data sheet says no auto-EOI on slave, but it sometimes works.
200 	KASSERT(isrc->is_pic == &atpics[SLAVE].at_pic,
203 	outb(atpics[SLAVE].at_ioaddr, OCW2_EOI);
221 	 * use mixed mode.  The "accidental" use could otherwise occur on
226 	 * IRQ0 via mixed mode, but now we don't use mixed mode at all.
228 	 * To avoid the slave not register sources after the master
242 		intr_register_source(&ai->at_intsrc);
250 	struct atpic *ap = (struct atpic *)isrc->is_pic;
253 	if (ap->at_imen & IMEN_MASK(ai)) {
254 		ap->at_imen &= ~IMEN_MASK(ai);
255 		outb(ap->at_ioaddr + ICU_IMR_OFFSET, ap->at_imen);
264 	struct atpic *ap = (struct atpic *)isrc->is_pic;
267 	if (ai->at_trigger != INTR_TRIGGER_EDGE) {
268 		ap->at_imen |= IMEN_MASK(ai);
269 		outb(ap->at_ioaddr + ICU_IMR_OFFSET, ap->at_imen);
278 		if (isrc->is_pic == &atpics[MASTER].at_pic)
321 	struct atpic *ap = (struct atpic *)isrc->is_pic;
330 	struct atpic *ap = (struct atpic *)isrc->is_pic;
332 	return (inb(ap->at_ioaddr) & IMEN_MASK(ai));
340 	i8259_init(ap, ap == &atpics[SLAVE]);
341 	if (ap == &atpics[SLAVE] && elcr_found)
368 	if (ai->at_trigger == trig)
396 	ai->at_trigger = trig;
413 i8259_init(struct atpic *pic, int slave)
419 	outb(pic->at_ioaddr, ICW1_RESET | ICW1_IC4);
420 	imr_addr = pic->at_ioaddr + ICU_IMR_OFFSET;
423 	outb(imr_addr, pic->at_intbase);
426 	 * Setup slave links.  For the master pic, indicate what line
427 	 * the slave is configured on.  For the slave indicate
430 	if (slave)
435 	/* Set mode. */
436 	if (slave)
442 	outb(imr_addr, pic->at_imen);
445 	outb(pic->at_ioaddr, OCW3_SEL | OCW3_RR);
447 	/* OCW2_L1 sets priority order to 3-7, 0-2 (com2 first). */
448 	if (!slave)
449 		outb(pic->at_ioaddr, OCW2_R | OCW2_SL | OCW2_L1);
462 	i8259_init(&atpics[SLAVE], 1);
465 	/* Install low-level interrupt handlers for all of our IRQs. */
469 		ai->at_intsrc.is_count = &ai->at_count;
470 		ai->at_intsrc.is_straycount = &ai->at_straycount;
471 		setidt(((struct atpic *)ai->at_intsrc.is_pic)->at_intbase +
472 		    ai->at_irq, pti ? ai->at_intr_pti : ai->at_intr, SDT_ATPIC,
489 			ai->at_trigger = elcr_read_trigger(i);
498 				ai->at_trigger = INTR_TRIGGER_EDGE;
501 				ai->at_trigger = INTR_TRIGGER_LEVEL;
540 	if (isrc->is_event == NULL && (vector == 7 || vector == 15)) {
547 		port = ((struct atpic *)isrc->is_pic)->at_ioaddr;