// SPDX-License-Identifier: GPL-2.0-only#include <linux/string.h>#include <linux/kernel.h>#include <linux/export.h>#include <linux/errno.h>#include <linux/irq.h>#include <linux/of.h>#include <linux/of_platform.h>#include <linux/of_address.h>#include <linux/of_irq.h>#include <linux/platform_device.h> #include "of_device_common.h" unsigned int irq_of_parse_and_map(struct device_node *node, int index){	struct platform_device *op = of_find_device_by_node(node); 	if (!op || index >= op->archdata.num_irqs)		return 0; 	return op->archdata.irqs[index];}EXPORT_SYMBOL(irq_of_parse_and_map); int of_address_to_resource(struct device_node *node, int index,			   struct resource *r){	struct platform_device *op = of_find_device_by_node(node); 	if (!op || index >= op->num_resources)		return -EINVAL; 	memcpy(r, &op->archdata.resource[index], sizeof(*r));	return 0;}EXPORT_SYMBOL_GPL(of_address_to_resource); void __iomem *of_iomap(struct device_node *node, int index){	struct platform_device *op = of_find_device_by_node(node);	struct resource *r; 	if (!op || index >= op->num_resources)		return NULL; 	r = &op->archdata.resource[index]; 	return of_ioremap(r, 0, resource_size(r), (char *) r->name);}EXPORT_SYMBOL(of_iomap); /* Take the archdata values for IOMMU, STC, and HOSTDATA found in * BUS and propagate to all child platform_device objects. */void of_propagate_archdata(struct platform_device *bus){	struct dev_archdata *bus_sd = &bus->dev.archdata;	struct device_node *bus_dp = bus->dev.of_node;	struct device_node *dp; 	for (dp = bus_dp->child; dp; dp = dp->sibling) {		struct platform_device *op = of_find_device_by_node(dp); 		op->dev.archdata.iommu = bus_sd->iommu;		op->dev.archdata.stc = bus_sd->stc;		op->dev.archdata.host_controller = bus_sd->host_controller;		op->dev.archdata.numa_node = bus_sd->numa_node;		op->dev.dma_ops = bus->dev.dma_ops; 		if (dp->child)			of_propagate_archdata(op);	}} static void get_cells(struct device_node *dp, int *addrc, int *sizec){	if (addrc)		*addrc = of_n_addr_cells(dp);	if (sizec)		*sizec = of_n_size_cells(dp);} /* * Default translator (generic bus) */ void of_bus_default_count_cells(struct device_node *dev, int *addrc, int *sizec){	get_cells(dev, addrc, sizec);} /* Make sure the least significant 64-bits are in-range.  Even * for 3 or 4 cell values it is a good enough approximation. */int of_out_of_range(const u32 *addr, const u32 *base,		    const u32 *size, int na, int ns){	u64 a = of_read_addr(addr, na);	u64 b = of_read_addr(base, na); 	if (a < b)		return 1; 	b += of_read_addr(size, ns);	if (a >= b)		return 1; 	return 0;} int of_bus_default_map(u32 *addr, const u32 *range, int na, int ns, int pna){	u32 result[OF_MAX_ADDR_CELLS];	int i; 	if (ns > 2) {		printk("of_device: Cannot handle size cells (%d) > 2.", ns);		return -EINVAL;	} 	if (of_out_of_range(addr, range, range + na + pna, na, ns))		return -EINVAL; 	/* Start with the parent range base.  */	memcpy(result, range + na, pna * 4); 	/* Add in the child address offset.  */	for (i = 0; i < na; i++)		result[pna - 1 - i] +=			(addr[na - 1 - i] -			 range[na - 1 - i]); 	memcpy(addr, result, pna * 4); 	return 0;} unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags){	if (flags)		return flags;	return IORESOURCE_MEM;} /* * SBUS bus specific translator */ int of_bus_sbus_match(struct device_node *np){	struct device_node *dp = np; 	while (dp) {		if (of_node_name_eq(dp, "sbus") ||		    of_node_name_eq(dp, "sbi"))			return 1; 		/* Have a look at use_1to1_mapping().  We're trying		 * to match SBUS if that's the top-level bus and we		 * don't have some intervening real bus that provides		 * ranges based translations.		 */		if (of_property_present(dp, "ranges"))			break; 		dp = dp->parent;	} 	return 0;} void of_bus_sbus_count_cells(struct device_node *child, int *addrc, int *sizec){	if (addrc)		*addrc = 2;	if (sizec)		*sizec = 1;}