1 /*- 2 * Copyright (c) 2015 Ian Lepore <ian@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/param.h> 28 #include <sys/bus.h> 29 30 #include <machine/bus.h> 31 #include <machine/fdt.h> 32 33 #include <dev/ofw/openfirm.h> 34 #include <dev/ofw/ofw_subr.h> 35 36 int 37 OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *tag, 38 bus_space_handle_t *handle, bus_size_t *sz) 39 { 40 bus_addr_t addr; 41 bus_size_t size; 42 pcell_t pci_hi; 43 int flags, res; 44 45 res = ofw_reg_to_paddr(dev, regno, &addr, &size, &pci_hi); 46 if (res < 0) 47 return (res); 48 49 /* 50 * Nothing special to do for PCI buses right now. 51 * This may need to be handled per-platform when it does come up. 52 */ 53 #ifdef notyet 54 if (pci_hi == OFW_PADDR_NOT_PCI) { 55 *tag = fdtbus_bs_tag; 56 flags = 0; 57 } else { 58 *tag = fdtbus_bs_tag; 59 flags = (pci_hi & OFW_PCI_PHYS_HI_PREFETCHABLE) ? 60 BUS_SPACE_MAP_PREFETCHABLE: 0; 61 } 62 #else 63 *tag = fdtbus_bs_tag; 64 flags = 0; 65 #endif 66 67 if (sz != NULL) 68 *sz = size; 69 70 return (bus_space_map(*tag, addr, size, flags, handle)); 71 } 72