1 // SPDX-License-Identifier: GPL-2.0
12 #include <linux/dma-mapping.h>
29 		 * parent as-is, not with the PCI translate  in of_bus_pci_match()
50 static int of_bus_pci_map(u32 *addr, const u32 *range,  in of_bus_pci_map()  argument
57 	if ((addr[0] ^ range[0]) & 0x03000000)  in of_bus_pci_map()
58 		return -EINVAL;  in of_bus_pci_map()
60 	if (of_out_of_range(addr + 1, range + 1, range + na + pna,  in of_bus_pci_map()
61 			    na - 1, ns))  in of_bus_pci_map()
62 		return -EINVAL;  in of_bus_pci_map()
64 	/* Start with the parent range base.  */  in of_bus_pci_map()
65 	memcpy(result, range + na, pna * 4);  in of_bus_pci_map()
68 	for (i = 0; i < na - 1; i++)  in of_bus_pci_map()
69 		result[pna - 1 - i] +=  in of_bus_pci_map()
70 			(addr[na - 1 - i] -  in of_bus_pci_map()
71 			 range[na - 1 - i]);  in of_bus_pci_map()
122 static int of_bus_ambapp_map(u32 *addr, const u32 *range,  in of_bus_ambapp_map()  argument
125 	return of_bus_default_map(addr, range, na, ns, pna);  in of_bus_ambapp_map()
142 		.addr_prop_name = "assigned-addresses",
145 		.map = of_bus_pci_map,
154 		.map = of_bus_default_map,
163 		.map = of_bus_ambapp_map,
172 		.map = of_bus_default_map,
205 			result[pna - 1 - i] =  in build_one_resource()
206 				addr[na - 1 - i];  in build_one_resource()
215 	for (; rlen >= rone; rlen -= rone, ranges += rone) {  in build_one_resource()
216 		if (!bus->map(addr, ranges, na, ns, pna))  in build_one_resource()
259 	bus = of_match_bus(p_op->dev.of_node);  in build_device_resources()
260 	bus->count_cells(op->dev.of_node, &na, &ns);  in build_device_resources()
262 	preg = of_get_property(op->dev.of_node, bus->addr_prop_name, &num_reg);  in build_device_resources()
266 	/* Convert to num-cells.  */  in build_device_resources()
269 	/* Conver to num-entries.  */  in build_device_resources()
272 	op->resource = op->archdata.resource;  in build_device_resources()
273 	op->num_resources = num_reg;  in build_device_resources()
275 		struct resource *r = &op->resource[index];  in build_device_resources()
278 		struct device_node *dp = op->dev.of_node;  in build_device_resources()
279 		struct device_node *pp = p_op->dev.of_node;  in build_device_resources()
290 		flags = bus->get_flags(reg, 0);  in build_device_resources()
303 			pp = dp->parent;  in build_device_resources()
310 			pbus->count_cells(dp, &pna, &pns);  in build_device_resources()
316 			flags = pbus->get_flags(addr, flags);  in build_device_resources()
327 			printk("%pOF reg[%d] -> %llx\n",  in build_device_resources()
328 			       op->dev.of_node, index,  in build_device_resources()
332 			r->start = result & 0xffffffff;  in build_device_resources()
333 			r->end = result + size - 1;  in build_device_resources()
334 			r->flags = flags | ((result >> 32ULL) & 0xffUL);  in build_device_resources()
336 		r->name = op->dev.of_node->full_name;  in build_device_resources()
351 	sd = &op->dev.archdata;  in scan_one_device()
352 	sd->op = op;  in scan_one_device()
354 	op->dev.of_node = dp;  in scan_one_device()
358 		op->archdata.num_irqs = len / sizeof(struct linux_prom_irqs);  in scan_one_device()
359 		for (i = 0; i < op->archdata.num_irqs; i++)  in scan_one_device()
360 			op->archdata.irqs[i] =  in scan_one_device()
367 			op->archdata.num_irqs = len / sizeof(unsigned int);  in scan_one_device()
368 			for (i = 0; i < op->archdata.num_irqs; i++)  in scan_one_device()
369 				op->archdata.irqs[i] =  in scan_one_device()
372 			op->archdata.num_irqs = 0;  in scan_one_device()
378 	op->dev.parent = parent;  in scan_one_device()
379 	op->dev.bus = &platform_bus_type;  in scan_one_device()
381 		dev_set_name(&op->dev, "root");  in scan_one_device()
383 		dev_set_name(&op->dev, "%08x", dp->phandle);  in scan_one_device()
385 	op->dev.coherent_dma_mask = DMA_BIT_MASK(32);  in scan_one_device()
386 	op->dev.dma_mask = &op->dev.coherent_dma_mask;  in scan_one_device()
403 			scan_tree(dp->child, &op->dev);  in scan_tree()
405 		dp = dp->sibling;  in scan_tree()
418 	scan_tree(root->child, &parent->dev);  in scan_of_devices()