11.4Sthorpej/* $NetBSD: fdt_bus_machdep.c,v 1.4 2025/09/06 21:02:41 thorpej Exp $ */ 21.1Sjmcneill 31.1Sjmcneill/*- 41.1Sjmcneill * Copyright (c) 2021 Jared McNeill <jmcneill@invisible.ca> 51.1Sjmcneill * All rights reserved. 61.1Sjmcneill * 71.1Sjmcneill * Redistribution and use in source and binary forms, with or without 81.1Sjmcneill * modification, are permitted provided that the following conditions 91.1Sjmcneill * are met: 101.1Sjmcneill * 1. Redistributions of source code must retain the above copyright 111.1Sjmcneill * notice, this list of conditions and the following disclaimer. 121.1Sjmcneill * 2. Redistributions in binary form must reproduce the above copyright 131.1Sjmcneill * notice, this list of conditions and the following disclaimer in the 141.1Sjmcneill * documentation and/or other materials provided with the distribution. 151.1Sjmcneill * 161.1Sjmcneill * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 171.1Sjmcneill * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 181.1Sjmcneill * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 191.1Sjmcneill * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 201.1Sjmcneill * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 211.1Sjmcneill * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 221.1Sjmcneill * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 231.1Sjmcneill * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 241.1Sjmcneill * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 251.1Sjmcneill * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 261.1Sjmcneill * SUCH DAMAGE. 271.1Sjmcneill */ 281.1Sjmcneill 291.1Sjmcneill#include <sys/cdefs.h> 301.4Sthorpej__KERNEL_RCSID(0, "$NetBSD: fdt_bus_machdep.c,v 1.4 2025/09/06 21:02:41 thorpej Exp $"); 311.1Sjmcneill 321.1Sjmcneill#include <sys/param.h> 331.1Sjmcneill#include <sys/bus.h> 341.1Sjmcneill#include <sys/kmem.h> 351.1Sjmcneill 361.1Sjmcneill#include <dev/fdt/fdtvar.h> 371.4Sthorpej#include <dev/fdt/fdt_platform.h> 381.3Sskrll 391.1Sjmcneill#include <arm/fdt/arm_fdtvar.h> 401.1Sjmcneill 411.1Sjmcneillextern struct bus_space arm_generic_bs_tag; 421.1Sjmcneill 431.1Sjmcneillstatic int 441.1Sjmcneillnonposted_mmio_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flag, 451.1Sjmcneill bus_space_handle_t *bshp) 461.1Sjmcneill{ 471.1Sjmcneill if (flag == 0) { 481.2Sjmcneill flag |= BUS_SPACE_MAP_NONPOSTED; 491.1Sjmcneill } 501.1Sjmcneill 511.1Sjmcneill return bus_space_map(&arm_generic_bs_tag, bpa, size, flag, bshp); 521.1Sjmcneill} 531.1Sjmcneill 541.1Sjmcneillbus_space_tag_t 551.1Sjmcneillfdtbus_bus_tag_create(int phandle, uint32_t flags) 561.1Sjmcneill{ 571.3Sskrll const struct fdt_platform *plat = fdt_platform_find(); 581.1Sjmcneill struct bus_space *tagp; 591.1Sjmcneill struct fdt_attach_args faa; 601.1Sjmcneill 611.3Sskrll plat->fp_init_attach_args(&faa); 621.1Sjmcneill 631.1Sjmcneill tagp = kmem_alloc(sizeof(*tagp), KM_SLEEP); 641.1Sjmcneill *tagp = *faa.faa_bst; 651.1Sjmcneill if ((flags & FDT_BUS_SPACE_FLAG_NONPOSTED_MMIO) != 0) { 661.1Sjmcneill tagp->bs_map = nonposted_mmio_bs_map; 671.1Sjmcneill } 681.1Sjmcneill 691.1Sjmcneill return tagp; 701.1Sjmcneill} 71