ofw_isa.c revision 186128 
1/*-
2 * Copyright (c) 1999, 2000 Matthew R. Green
3 * Copyright (c) 2001, 2003 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
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD: head/sys/sparc64/isa/ofw_isa.c 186128 2008-12-15 15:31:10Z nwhitehorn $");
34
35/*
36 * Helper functions which can be used in both ISA and EBus code.
37 */
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/bus.h>
42
43#include <dev/ofw/openfirm.h>
44#include <dev/ofw/ofw_bus_subr.h>
45
46#include <machine/bus.h>
47#include <machine/resource.h>
48
49#include <sparc64/pci/ofw_pci.h>
50#include <sparc64/isa/ofw_isa.h>
51
52#include "pcib_if.h"
53
54int
55ofw_isa_range_restype(struct isa_ranges *range)
56{
57	int ps = ISA_RANGE_PS(range);
58
59	switch (ps) {
60	case OFW_PCI_CS_IO:
61		return (SYS_RES_IOPORT);
62	case OFW_PCI_CS_MEM32:
63		return (SYS_RES_MEMORY);
64	default:
65		panic("ofw_isa_range_restype: illegal space %x", ps);
66	}
67
68}
69
70/* XXX: this only supports PCI as parent bus right now. */
71int
72ofw_isa_range_map(struct isa_ranges *range, int nrange, u_long *start,
73    u_long *end, int *which)
74{
75	struct isa_ranges *r;
76	uint64_t offs, cstart, cend;
77	int i;
78
79	for (i = 0; i < nrange; i++) {
80		r = &range[i];
81		cstart = ISA_RANGE_CHILD(r);
82		cend = cstart + r->size;
83		if (*start < cstart || *start > cend)
84			continue;
85		if (*end < cstart || *end > cend) {
86			panic("ofw_isa_map_iorange: iorange crosses pci "
87			    "ranges (%#lx not in %#lx - %#lx)", *end, cstart,
88			    cend);
89		}
90		offs = ISA_RANGE_PHYS(r);
91		*start = *start + offs - cstart;
92		*end  = *end + offs - cstart;
93		if (which != NULL)
94			*which = i;
95		return (ofw_isa_range_restype(r));
96	}
97	panic("ofw_isa_map_iorange: could not map range %#lx - %#lx",
98	    *start, *end);
99}
100
101ofw_pci_intr_t
102ofw_isa_route_intr(device_t bridge, phandle_t node, struct ofw_bus_iinfo *ii,
103    ofw_isa_intr_t intr)
104{
105	struct isa_regs reg;
106	uint8_t maskbuf[sizeof(reg) + sizeof(intr)];
107	device_t pbridge;
108	ofw_isa_intr_t mintr;
109
110	pbridge = device_get_parent(device_get_parent(bridge));
111	/*
112	 * If we get a match from using the map, the resulting INO is
113	 * fully specified, so we may not continue to map.
114	 */
115	if (!ofw_bus_lookup_imap(node, ii, &reg, sizeof(reg),
116	    &intr, sizeof(intr), &mintr, sizeof(mintr), maskbuf)) {
117		/* Try routing at the parent bridge. */
118		mintr = PCIB_ROUTE_INTERRUPT(pbridge, bridge, intr);
119	}
120	return (mintr);
121}
122