1 // SPDX-License-Identifier: GPL-2.0
4 #include <linux/dma-mapping.h>
20 	unsigned long ret = res->start + offset;  in of_ioremap()
23 	if (res->flags & IORESOURCE_MEM)  in of_ioremap()
36 	if (res->flags & IORESOURCE_MEM)  in of_iounmap()
58 		 * parent as-is, not with the PCI translate  in of_bus_pci_match()
88 static int of_bus_simba_map(u32 *addr, const u32 *range,  in of_bus_simba_map()  argument
103 static int of_bus_pci_map(u32 *addr, const u32 *range,  in of_bus_pci_map()  argument
110 	if (!((addr[0] ^ range[0]) & 0x03000000))  in of_bus_pci_map()
113 	/* Special exception, we can map a 64-bit address into  in of_bus_pci_map()
114 	 * a 32-bit range.  in of_bus_pci_map()
117 	    (range[0] & 0x03000000) == 0x02000000)  in of_bus_pci_map()
120 	return -EINVAL;  in of_bus_pci_map()
123 	if (of_out_of_range(addr + 1, range + 1, range + na + pna,  in of_bus_pci_map()
124 			    na - 1, ns))  in of_bus_pci_map()
125 		return -EINVAL;  in of_bus_pci_map()
127 	/* Start with the parent range base.  */  in of_bus_pci_map()
128 	memcpy(result, range + na, pna * 4);  in of_bus_pci_map()
131 	for (i = 0; i < na - 1; i++)  in of_bus_pci_map()
132 		result[pna - 1 - i] +=  in of_bus_pci_map()
133 			(addr[na - 1 - i] -  in of_bus_pci_map()
134 			 range[na - 1 - i]);  in of_bus_pci_map()
165  * This is just needed to hard-code the address and size cell
166  * counts.  'fhc' and 'central' nodes lack the #address-cells and
167  * #size-cells properties, and if you walk to the root on such
168  * Enterprise boxes all you'll get is a #size-cells of 2 which is
187 		.addr_prop_name = "assigned-addresses",
190 		.map = of_bus_pci_map,
196 		.addr_prop_name = "assigned-addresses",
199 		.map = of_bus_simba_map,
208 		.map = of_bus_default_map,
217 		.map = of_bus_default_map,
226 		.map = of_bus_default_map,
258 			result[pna - 1 - i] =  in build_one_resource()
259 				addr[na - 1 - i];  in build_one_resource()
268 	for (; rlen >= rone; rlen -= rone, ranges += rone) {  in build_one_resource()
269 		if (!bus->map(addr, ranges, na, ns, pna))  in build_one_resource()
276 	if (!strcmp(bus->name, "pci") &&  in build_one_resource()
329 	bus = of_match_bus(p_op->dev.of_node);  in build_device_resources()
330 	bus->count_cells(op->dev.of_node, &na, &ns);  in build_device_resources()
332 	preg = of_get_property(op->dev.of_node, bus->addr_prop_name, &num_reg);  in build_device_resources()
336 	/* Convert to num-cells.  */  in build_device_resources()
339 	/* Convert to num-entries.  */  in build_device_resources()
342 	/* Prevent overrunning the op->resources[] array.  */  in build_device_resources()
346 		       op->dev.of_node, num_reg, PROMREG_MAX);  in build_device_resources()
350 	op->resource = op->archdata.resource;  in build_device_resources()
351 	op->num_resources = num_reg;  in build_device_resources()
353 		struct resource *r = &op->resource[index];  in build_device_resources()
356 		struct device_node *dp = op->dev.of_node;  in build_device_resources()
357 		struct device_node *pp = p_op->dev.of_node;  in build_device_resources()
367 		flags = bus->get_flags(addr, 0);  in build_device_resources()
380 			pp = dp->parent;  in build_device_resources()
387 			pbus->count_cells(dp, &pna, &pns);  in build_device_resources()
393 			flags = pbus->get_flags(addr, flags);  in build_device_resources()
404 			printk("%pOF reg[%d] -> %llx\n",  in build_device_resources()
405 			       op->dev.of_node, index,  in build_device_resources()
412 			r->start = result;  in build_device_resources()
413 			r->end = result + size - 1;  in build_device_resources()
414 			r->flags = flags;  in build_device_resources()
416 		r->name = op->dev.of_node->full_name;  in build_device_resources()
433 	bus->count_cells(dp, &na, NULL);  in apply_interrupt_map()
458 		/* Psycho and Sabre PCI controllers can have 'interrupt-map'  in apply_interrupt_map()
459 		 * properties that do not include the on-board device  in apply_interrupt_map()
464 		 * match in the parent's 'interrupt-map', and the  in apply_interrupt_map()
468 		if (pp->irq_trans)  in apply_interrupt_map()
494 	bus = (regs->phys_hi >> 16) & 0xff;  in pci_irq_swizzle()
495 	devfn = (regs->phys_hi >> 8) & 0xff;  in pci_irq_swizzle()
498 	if (pp->irq_trans) {  in pci_irq_swizzle()
499 		/* Derived from Table 8-3, U2P User's Manual.  This branch  in pci_irq_swizzle()
501 		 * interrupt-map and interrupt-map-mask properties.  The  in pci_irq_swizzle()
502 		 * Ultra-E450 is one example.  in pci_irq_swizzle()
506 		 * D: 2-bit slot number, derived from PCI device number as  in pci_irq_swizzle()
507 		 *    (dev - 1) for bus A, or (dev - 2) for bus B  in pci_irq_swizzle()
508 		 * L: 2-bit line number  in pci_irq_swizzle()
511 			/* PBM-A */  in pci_irq_swizzle()
513 			slot = (slot - 1) << 2;  in pci_irq_swizzle()
515 			/* PBM-B */  in pci_irq_swizzle()
517 			slot = (slot - 2) << 2;  in pci_irq_swizzle()
519 		irq -= 1;  in pci_irq_swizzle()
523 		/* Going through a PCI-PCI bridge that lacks a set of  in pci_irq_swizzle()
524 		 * interrupt-map and interrupt-map-mask properties.  in pci_irq_swizzle()
526 		ret = ((irq - 1 + (slot & 3)) & 3) + 1;  in pci_irq_swizzle()
538 	struct device_node *dp = op->dev.of_node;  in build_one_device_irq()
546 	if (dp->irq_trans) {  in build_one_device_irq()
547 		irq = dp->irq_trans->irq_build(dp, irq,  in build_one_device_irq()
548 					       dp->irq_trans->data);  in build_one_device_irq()
551 			printk("%pOF: direct translate %x --> %x\n",  in build_one_device_irq()
558 	 * interrupt-map or bus specific translations, until we hit  in build_one_device_irq()
565 	pp = dp->parent;  in build_one_device_irq()
571 		imap = of_get_property(pp, "interrupt-map", &imlen);  in build_one_device_irq()
572 		imsk = of_get_property(pp, "interrupt-map-mask", NULL);  in build_one_device_irq()
582 				printk("%pOF: Apply [%pOF:%x] imap --> [%pOF:%x]\n",  in build_one_device_irq()
583 				       op->dev.of_node,  in build_one_device_irq()
589 			if (iret->irq_trans) {  in build_one_device_irq()
600 					       "%x --> %x\n",  in build_one_device_irq()
601 					       op->dev.of_node,  in build_one_device_irq()
607 			if (pp->irq_trans) {  in build_one_device_irq()
613 		pp = pp->parent;  in build_one_device_irq()
618 	irq = ip->irq_trans->irq_build(op->dev.of_node, irq,  in build_one_device_irq()
619 				       ip->irq_trans->data);  in build_one_device_irq()
621 		printk("%pOF: Apply IRQ trans [%pOF] %x --> %x\n",  in build_one_device_irq()
622 		      op->dev.of_node, ip, orig_irq, irq);  in build_one_device_irq()
626 	if (nid != -1) {  in build_one_device_irq()
644 	sd = &op->dev.archdata;  in scan_one_device()
645 	sd->op = op;  in scan_one_device()
647 	op->dev.of_node = dp;  in scan_one_device()
651 		op->archdata.num_irqs = len / 4;  in scan_one_device()
653 		/* Prevent overrunning the op->irqs[] array.  */  in scan_one_device()
654 		if (op->archdata.num_irqs > PROMINTR_MAX) {  in scan_one_device()
655 			printk(KERN_WARNING "%pOF: Too many irqs (%d), "  in scan_one_device()
657 			       dp, op->archdata.num_irqs, PROMINTR_MAX);  in scan_one_device()
658 			op->archdata.num_irqs = PROMINTR_MAX;  in scan_one_device()
660 		memcpy(op->archdata.irqs, irq, op->archdata.num_irqs * 4);  in scan_one_device()
662 		op->archdata.num_irqs = 0;  in scan_one_device()
666 	for (i = 0; i < op->archdata.num_irqs; i++)  in scan_one_device()
667 		op->archdata.irqs[i] = build_one_device_irq(op, parent, op->archdata.irqs[i]);  in scan_one_device()
669 	op->dev.parent = parent;  in scan_one_device()
670 	op->dev.bus = &platform_bus_type;  in scan_one_device()
672 		dev_set_name(&op->dev, "root");  in scan_one_device()
674 		dev_set_name(&op->dev, "%08x", dp->phandle);  in scan_one_device()
675 	op->dev.coherent_dma_mask = DMA_BIT_MASK(32);  in scan_one_device()
676 	op->dev.dma_mask = &op->dev.coherent_dma_mask;  in scan_one_device()
693 			scan_tree(dp->child, &op->dev);  in scan_tree()
695 		dp = dp->sibling;  in scan_tree()
708 	scan_tree(root->child, &parent->dev);  in scan_of_devices()