1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2000-2002 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 /*
30 * Routines extracted from usr/src/uts/common/io/usb/usba/usba.c.
31 */
32
33 #include <sys/mdb_modapi.h>
34 #include <sys/usb/usba.h>
35 #include <sys/usb/usba/usba_types.h>
36 #include <sys/usb/usba/usba_impl.h>
37 #include <sys/usb/usba/hcdi_impl.h>
38 #include <sys/file.h>
39 #include <sys/sunndi.h>
40
41
42 /*
43 * check whether this dip is the root hub.
44 * dip_addr is address of the devinfo struct in the core image (not local space)
45 */
46 static int
mdb_usba_is_root_hub(struct dev_info * dip)47 mdb_usba_is_root_hub(struct dev_info *dip)
48 {
49 uintptr_t p = (uintptr_t)dip->devi_hw_prop_ptr;
50
51 while (p != NULL) {
52 ddi_prop_t prop;
53 char prop_name[128];
54
55 if (mdb_vread(&prop, sizeof (prop), p) == -1) {
56 mdb_warn("failed to read property");
57 break;
58 }
59 if (mdb_readstr(prop_name, sizeof (prop_name),
60 (uintptr_t)prop.prop_name) == -1) {
61 mdb_warn("failed to read property name");
62 }
63
64 if (strcmp(prop_name, "root-hub") == 0) {
65
66 return (1);
67 }
68
69 p = (uintptr_t)prop.prop_next;
70 }
71
72 return (0);
73 }
74
75
76 /*
77 * retrieve hcdi structure from the dip
78 *
79 * dip_addr is address of the devinfo struct in the core image (not local space)
80 */
81 uintptr_t
mdb_usba_hcdi_get_hcdi(struct dev_info * dip)82 mdb_usba_hcdi_get_hcdi(struct dev_info *dip)
83 {
84 return ((uintptr_t)dip->devi_driver_data);
85 }
86
87
88 /*
89 * get usba_device pointer in the devi
90 *
91 * dip_addr is address of the devinfo struct in the core image (not local space)
92 */
93 uintptr_t
mdb_usba_get_usba_device(uintptr_t dip_addr)94 mdb_usba_get_usba_device(uintptr_t dip_addr)
95 {
96 struct dev_info devinfo;
97
98 if (mdb_vread(&devinfo, sizeof (struct dev_info), dip_addr) == -1) {
99 mdb_warn("failed to read dev_info at %p", dip_addr);
100
101 return (NULL);
102 }
103
104 /*
105 * we cannot use parent_data in the usb node because its
106 * bus parent (eg. PCI nexus driver) uses this data
107 *
108 * we cannot use driver data in the other usb nodes since
109 * usb drivers may need to use this
110 */
111 if (mdb_usba_is_root_hub(&devinfo)) {
112 usba_hcdi_t hcdi_struct;
113 uintptr_t hcdi_addr = mdb_usba_hcdi_get_hcdi(&devinfo);
114
115 if (!hcdi_addr) {
116
117 return (NULL);
118 }
119
120 /* Read hcdi struct into local address space. */
121 if (mdb_vread(&hcdi_struct, sizeof (usba_hcdi_t),
122 hcdi_addr) == -1) {
123 mdb_warn("failed to read hcdi struct");
124
125 return (NULL);
126 }
127
128 return ((uintptr_t)hcdi_struct.hcdi_usba_device);
129
130 } else {
131 struct dev_info devinfo;
132
133 if (mdb_vread(&devinfo, sizeof (struct dev_info),
134 dip_addr) == -1) {
135 mdb_warn("failed to read dev_info at %p", dip_addr);
136
137 return (NULL);
138 }
139
140 /* casts needed to keep lint happy */
141 return ((uintptr_t)devinfo.devi_parent_data);
142 }
143 }
144