1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
33  *     /iobus@0x80000000/name psim-iobus
35  *  Code borrowed from various nexus.c and uninorth.c :-)
54 #include <machine/resource.h>
74 static struct   resource *iobus_alloc_resource(device_t, device_t, int, int *,
77 static int  iobus_adjust_resource(device_t, device_t, struct resource *,
79 static int  iobus_activate_resource(device_t, device_t, struct resource *);
80 static int  iobus_deactivate_resource(device_t, device_t, struct resource *);
81 static int  iobus_map_resource(device_t, device_t, struct resource *,
84 static int  iobus_unmap_resource(device_t, device_t, struct resource *,
86 static int  iobus_release_resource(device_t, device_t, struct resource *);
132 	if (strcmp(type, "psim-iobus") != 0)  in iobus_probe()
140  * Add interrupt/addr range to the dev's resource list if present
145 	u_int intr = -1;  in iobus_add_intr()
147 	if (OF_getprop(devnode, "interrupt", &intr, sizeof(intr)) != -1) {  in iobus_add_intr()
148 		resource_list_add(&dinfo->id_resources,   in iobus_add_intr()
151 	dinfo->id_interrupt = intr;  in iobus_add_intr()
161 	size = OF_getprop(devnode, "reg", dinfo->id_reg,sizeof(dinfo->id_reg));  in iobus_add_reg()
163 	if (size != -1) {  in iobus_add_reg()
164 		dinfo->id_nregs = size / (sizeof(dinfo->id_reg[0]));  in iobus_add_reg()
166 		for (i = 0; i < dinfo->id_nregs; i+= 3) {  in iobus_add_reg()
172 			dinfo->id_reg[i+1] -= iobus_off;  in iobus_add_reg()
174 			resource_list_add(&dinfo->id_resources,  in iobus_add_reg()
176 					  dinfo->id_reg[i+1],   in iobus_add_reg()
177 					  dinfo->id_reg[i+1] +   in iobus_add_reg()
178 					      dinfo->id_reg[i+2],  in iobus_add_reg()
179 					  dinfo->id_reg[i+2]);  in iobus_add_reg()
187 	struct iobus_softc *sc;  in iobus_attach()  local
196 	sc = device_get_softc(dev);  in iobus_attach()
197 	sc->sc_node = ofw_bus_get_node(dev);  in iobus_attach()
201 	 * resource manager  in iobus_attach()
203 	size = OF_getprop(sc->sc_node, "reg", reg, sizeof(reg));  in iobus_attach()
205 		sc->sc_addr = reg[0];  in iobus_attach()
206 		sc->sc_size = reg[1];  in iobus_attach()
211 	sc->sc_mem_rman.rm_type = RMAN_ARRAY;  in iobus_attach()
212         sc->sc_mem_rman.rm_descr = "IOBus Device Memory";  in iobus_attach()
213         if (rman_init(&sc->sc_mem_rman) != 0) {  in iobus_attach()
218 	rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size);  in iobus_attach()
221          * Iterate through the sub-devices  in iobus_attach()
223         root = sc->sc_node;  in iobus_attach()
232 			resource_list_init(&dinfo->id_resources);  in iobus_attach()
233                         dinfo->id_node = child;  in iobus_attach()
234                         dinfo->id_name = name;  in iobus_attach()
236 			iobus_add_reg(child, dinfo, sc->sc_addr);  in iobus_attach()
255         rl = &dinfo->id_resources;  in iobus_print_child()
259         retval += printf(" offset 0x%x", dinfo->id_reg[1]);  in iobus_print_child()
282                 *result = dinfo->id_node;  in iobus_read_ivar()
285                 *result = (uintptr_t)dinfo->id_name;  in iobus_read_ivar()
288 		*result = dinfo->id_nregs;  in iobus_read_ivar()
291 		*result = (uintptr_t)dinfo->id_reg;  in iobus_read_ivar()
309 	struct iobus_softc *sc;  in iobus_get_rman()  local
311 	sc = device_get_softc(bus);  in iobus_get_rman()
315 		return (&sc->sc_mem_rman);  in iobus_get_rman()
321 static struct resource *
336 		device_printf(bus, "unknown resource request from %s\n",  in iobus_alloc_resource()
343 iobus_adjust_resource(device_t bus, device_t child, struct resource *r,  in iobus_adjust_resource()
360 iobus_release_resource(device_t bus, device_t child, struct resource *res)  in iobus_release_resource()
375 iobus_activate_resource(device_t bus, device_t child, struct resource *res)  in iobus_activate_resource()
390 iobus_deactivate_resource(device_t bus, device_t child, struct resource *res)  in iobus_deactivate_resource()
405 iobus_map_resource(device_t bus, device_t child, struct resource *r,  in iobus_map_resource()
409 	struct iobus_softc *sc;  in iobus_map_resource()  local
431 	sc = device_get_softc(bus);  in iobus_map_resource()
432 	map->r_vaddr = pmap_mapdev_attr((vm_paddr_t)start + sc->sc_addr,  in iobus_map_resource()
434 	if (map->r_vaddr == NULL)  in iobus_map_resource()
436 	map->r_bustag = &bs_le_tag;  in iobus_map_resource()
437 	map->r_bushandle = (vm_offset_t)map->r_vaddr;  in iobus_map_resource()
438 	map->r_size = length;  in iobus_map_resource()
443 iobus_unmap_resource(device_t bus, device_t child, struct resource *r,  in iobus_unmap_resource()
450 		pmap_unmapdev(map->r_vaddr, map->r_size);  in iobus_unmap_resource()