1 // SPDX-License-Identifier: GPL-2.0-or-later
30 #include <asm/pci-bridge.h>
43         unsigned int    level;  member
61 static int pmac_irq_cascade = -1;
88         out_le32(&pmac_irq_hw[i]->enable, ppc_cached_irq_mask[i]);  in pmac_mask_and_ack_irq()
89         out_le32(&pmac_irq_hw[i]->ack, bit);  in pmac_mask_and_ack_irq()
94         } while((in_le32(&pmac_irq_hw[i]->enable) & bit)  in pmac_mask_and_ack_irq()
109         out_le32(&pmac_irq_hw[i]->ack, bit);  in pmac_ack_irq()
110         (void)in_le32(&pmac_irq_hw[i]->ack);  in pmac_ack_irq()
123         out_le32(&pmac_irq_hw[i]->enable, ppc_cached_irq_mask[i]);  in __pmac_set_irq_mask()
129         } while((in_le32(&pmac_irq_hw[i]->enable) & bit)  in __pmac_set_irq_mask()
137         if (bit & ppc_cached_irq_mask[i] & in_le32(&pmac_irq_hw[i]->level))  in __pmac_set_irq_mask()
153 		out_le32(&pmac_irq_hw[i]->ack, bit);  in pmac_startup_irq()
194 	.name		= "PMAC-PIC",
210 	for (irq = max_irqs; (irq -= 32) >= max_real_irqs; ) {  in gatwick_action()
212 		bits = in_le32(&pmac_irq_hw[i]->event) | ppc_lost_interrupts[i];  in gatwick_action()
213 		bits |= in_le32(&pmac_irq_hw[i]->level);  in gatwick_action()
234 	/* IPI's are a hack on the powersurge -- Cort */  in pmac_pic_get_irq()
240 	for (irq = max_real_irqs; (irq -= 32) >= 0; ) {  in pmac_pic_get_irq()
242 		bits = in_le32(&pmac_irq_hw[i]->event) | ppc_lost_interrupts[i];  in pmac_pic_get_irq()
243 		bits |= in_le32(&pmac_irq_hw[i]->level);  in pmac_pic_get_irq()
267 		return -EINVAL;  in pmac_pic_host_map()
269 	/* Mark level interrupts, set delayed disable for edge ones and set  in pmac_pic_host_map()
286         struct device_node *master = NULL;  in pmac_pic_probe_oldstyle()  local
298 	if ((master = of_find_node_by_name(NULL, "gc")) != NULL) {  in pmac_pic_probe_oldstyle()
300 	} else if ((master = of_find_node_by_name(NULL, "ohare")) != NULL) {  in pmac_pic_probe_oldstyle()
306 	} else if ((master = of_find_node_by_name(NULL, "mac-io")) != NULL) {  in pmac_pic_probe_oldstyle()
312 		of_node_get(master);  in pmac_pic_probe_oldstyle()
313 		slave = of_find_node_by_name(master, "mac-io");  in pmac_pic_probe_oldstyle()
315 		/* Check ordering of master & slave */  in pmac_pic_probe_oldstyle()
316 		if (of_device_is_compatible(master, "gatwick")) {  in pmac_pic_probe_oldstyle()
318 			swap(master, slave);  in pmac_pic_probe_oldstyle()
325 	BUG_ON(master == NULL);  in pmac_pic_probe_oldstyle()
330 	pmac_pic_host = irq_domain_add_linear(master, max_irqs,  in pmac_pic_probe_oldstyle()
336 	BUG_ON(of_address_to_resource(master, 0, &r));  in pmac_pic_probe_oldstyle()
346 	of_node_put(master);  in pmac_pic_probe_oldstyle()
349 	       master, max_real_irqs);  in pmac_pic_probe_oldstyle()
364 		       max_irqs - max_real_irqs, pmac_irq_cascade);  in pmac_pic_probe_oldstyle()
370 		out_le32(&pmac_irq_hw[i]->enable, 0);  in pmac_pic_probe_oldstyle()
382 	if (request_irq(i, xmon_irq, IRQF_NO_THREAD, "NMI - XMON", NULL))  in pmac_pic_probe_oldstyle()
383 		pr_err("Failed to register NMI-XMON interrupt\n");  in pmac_pic_probe_oldstyle()
395 	 * and no interrupt-controller nodes. We also have dodgy  in of_irq_parse_oldworld()
397 	 * missing behind pci-pci bridges and we have to get it  in of_irq_parse_oldworld()
405 		device = device->parent;  in of_irq_parse_oldworld()
410 		return -EINVAL;  in of_irq_parse_oldworld()
414 		return -EINVAL;  in of_irq_parse_oldworld()
416 	out_irq->np = NULL;  in of_irq_parse_oldworld()
417 	out_irq->args[0] = ints[index];  in of_irq_parse_oldworld()
418 	out_irq->args_count = 1;  in of_irq_parse_oldworld()
430 	pswitch = of_find_node_by_name(NULL, "programmer-switch");  in pmac_pic_setup_mpic_nmi()
436 					"NMI - XMON", NULL))  in pmac_pic_setup_mpic_nmi()
437 				pr_err("Failed to register NMI-XMON interrupt\n");  in pmac_pic_setup_mpic_nmi()
445 						int master)  in pmac_setup_one_mpic()  argument
447 	const char *name = master ? " MPIC 1   " : " MPIC 2   ";  in pmac_setup_one_mpic()
449 	unsigned int flags = master ? 0 : MPIC_SECONDARY;  in pmac_setup_one_mpic()
453 	if (of_property_read_bool(np, "big-endian"))  in pmac_setup_one_mpic()
459 	if (master && (flags & MPIC_BIG_ENDIAN))  in pmac_setup_one_mpic()
474 	struct device_node *np, *master = NULL, *slave = NULL;  in pmac_pic_probe_mpic()  local
477 	for_each_node_by_type(np, "open-pic") {  in pmac_pic_probe_mpic()
478 		if (master == NULL && !of_property_present(np, "interrupts"))  in pmac_pic_probe_mpic()
479 			master = of_node_get(np);  in pmac_pic_probe_mpic()
482 		if (master && slave) {  in pmac_pic_probe_mpic()
489 	if (master == NULL && slave != NULL) {  in pmac_pic_probe_mpic()
490 		master = slave;  in pmac_pic_probe_mpic()
495 	if (master == NULL)  in pmac_pic_probe_mpic()
496 		return -ENODEV;  in pmac_pic_probe_mpic()
498 	/* Set master handler */  in pmac_pic_probe_mpic()
501 	/* Setup master */  in pmac_pic_probe_mpic()
502 	mpic1 = pmac_setup_one_mpic(master, 1);  in pmac_pic_probe_mpic()
508 	of_node_put(master);  in pmac_pic_probe_mpic()
541 		for_each_node_with_property(np, "interrupt-controller") {  in pmac_pic_init()
542 			/* Skip /chosen/interrupt-controller */  in pmac_pic_init()
558 	/* We first try to detect Apple's new Core99 chipset, since mac-io  in pmac_pic_init()
584 	int viaint = -1;  in pmacpic_find_viaint()
591 	np = of_find_node_by_name(NULL, "via-pmu");  in pmacpic_find_viaint()
612 	out_le32(&pmac_irq_hw[0]->enable, ppc_cached_irq_mask[0]);  in pmacpic_suspend()
614 		out_le32(&pmac_irq_hw[1]->enable, ppc_cached_irq_mask[1]);  in pmacpic_suspend()
615 	(void)in_le32(&pmac_irq_hw[0]->event);  in pmacpic_suspend()
618         (void)in_le32(&pmac_irq_hw[0]->enable);  in pmacpic_suspend()
627 	out_le32(&pmac_irq_hw[0]->enable, 0);  in pmacpic_resume()
629 		out_le32(&pmac_irq_hw[1]->enable, 0);  in pmacpic_resume()