// SPDX-License-Identifier: GPL-2.0#undef DEBUG #include <linux/kernel.h>#include <linux/string.h>#include <linux/ioport.h>#include <linux/etherdevice.h>#include <linux/of_address.h>#include <asm/prom.h> void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window,			 unsigned long *busno, unsigned long *phys,			 unsigned long *size){	u32 cells;	const __be32 *prop; 	/* busno is always one cell */	*busno = of_read_number(dma_window, 1);	dma_window++; 	prop = of_get_property(dn, "ibm,#dma-address-cells", NULL);	if (!prop)		prop = of_get_property(dn, "#address-cells", NULL); 	cells = prop ? of_read_number(prop, 1) : of_n_addr_cells(dn);	*phys = of_read_number(dma_window, cells); 	dma_window += cells; 	prop = of_get_property(dn, "ibm,#dma-size-cells", NULL);	cells = prop ? of_read_number(prop, 1) : of_n_size_cells(dn);	*size = of_read_number(dma_window, cells);}