ofw_isa.c revision 91966
1/* 2 * Copyright (c) 1999, 2000 Matthew R. Green 3 * Copyright (c) 2001 Thomas Moestl <tmm@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * from: NetBSD: ebus.c,v 1.26 2001/09/10 16:27:53 eeh Exp 30 * 31 * $FreeBSD: head/sys/sparc64/isa/ofw_isa.c 91966 2002-03-09 22:00:30Z tmm $ 32 */ 33 34/* 35 * Helper functions which can be used in both ISA and EBus code. 36 */ 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/bus.h> 41 42#include <ofw/openfirm.h> 43#include <ofw/ofw_pci.h> 44 45#include <machine/resource.h> 46#include <machine/ofw_bus.h> 47 48#include <sparc64/isa/ofw_isa.h> 49#include <sparc64/pci/ofw_pci.h> 50 51/* 52 * This applies only for an ISA/EBus with an own interrupt-map property. 53 */ 54int 55ofw_isa_map_intr(struct isa_imap *imap, int nimap, struct isa_imap_msk *imapmsk, 56 int intr, struct isa_regs *regs, int nregs) 57{ 58 char regm[8]; 59 60 return (ofw_bus_route_intr(intr, regs, sizeof(*regs), 8, nregs, 61 imap, nimap, imapmsk, regm)); 62} 63 64/* XXX: this only supports PCI as parent bus right now. */ 65int 66ofw_isa_map_iorange(struct isa_ranges *range, int nrange, u_long *start, 67 u_long *end) 68{ 69 u_int64_t offs, cstart, cend; 70 int i; 71 72 for (i = 0; i < nrange; i++) { 73 cstart = ((u_int64_t)range[i].child_hi << 32) | 74 range[i].child_lo; 75 cend = cstart + range[i].size; 76 if (*start < cstart || *start > cend) 77 continue; 78 if (*end < cstart || *end > cend) { 79 panic("ofw_isa_map_iorange: iorange crosses pci " 80 "ranges (%#lx not in %#lx - %#lx)", *end, cstart, 81 cend); 82 } 83 offs = (((u_int64_t)range[i].phys_mid << 32) | 84 range[i].phys_lo); 85 *start = *start + offs - cstart; 86 *end = *end + offs - cstart; 87 /* Isolate address space and find the right tag */ 88 switch (ISA_RANGE_PS(&range[i])) { 89 case PCI_CS_IO: 90 return (SYS_RES_IOPORT); 91 case PCI_CS_MEM32: 92 return (SYS_RES_MEMORY); 93 default: 94 panic("ofw_isa_map_iorange: illegal space %x", 95 ISA_RANGE_PS(&range[i])); 96 break; 97 } 98 } 99 panic("ofw_isa_map_iorange: could not map range %#lx - %#lx", 100 *start, *end); 101} 102