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("$FreeBSD$");
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
45 #include <machine/bus.h>
46 #include <machine/resource.h>
47 #include <machine/ofw_bus.h>
48
49 #include <sparc64/pci/ofw_pci.h>
50 #include <sparc64/isa/ofw_isa.h>
51
52 #include "pcib_if.h"
53
54 int
55 ofw_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. */
71 int
72 ofw_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 - 1;
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
101 ofw_pci_intr_t
102 ofw_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, ®, 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 }
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