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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2000-2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Routines extracted from usr/src/uts/common/io/usb/usba/usba.c.
*/
#include <sys/mdb_modapi.h>
#include <sys/usb/usba.h>
#include <sys/usb/usba/usba_types.h>
#include <sys/usb/usba/usba_impl.h>
#include <sys/usb/usba/hcdi_impl.h>
#include <sys/file.h>
#include <sys/sunndi.h>
/*
* check whether this dip is the root hub.
* dip_addr is address of the devinfo struct in the core image (not local space)
*/
static int
mdb_usba_is_root_hub(struct dev_info *dip)
{
uintptr_t p = (uintptr_t)dip->devi_hw_prop_ptr;
while (p != 0) {
ddi_prop_t prop;
char prop_name[128];
if (mdb_vread(&prop, sizeof (prop), p) == -1) {
mdb_warn("failed to read property");
break;
}
if (mdb_readstr(prop_name, sizeof (prop_name),
(uintptr_t)prop.prop_name) == -1) {
mdb_warn("failed to read property name");
}
if (strcmp(prop_name, "root-hub") == 0) {
return (1);
}
p = (uintptr_t)prop.prop_next;
}
return (0);
}
/*
* retrieve hcdi structure from the dip
*
* dip_addr is address of the devinfo struct in the core image (not local space)
*/
uintptr_t
mdb_usba_hcdi_get_hcdi(struct dev_info *dip)
{
return ((uintptr_t)dip->devi_driver_data);
}
/*
* get usba_device pointer in the devi
*
* dip_addr is address of the devinfo struct in the core image (not local space)
*/
uintptr_t
mdb_usba_get_usba_device(uintptr_t dip_addr)
{
struct dev_info devinfo;
if (mdb_vread(&devinfo, sizeof (struct dev_info), dip_addr) == -1) {
mdb_warn("failed to read dev_info at %p", dip_addr);
return (0);
}
/*
* we cannot use parent_data in the usb node because its
* bus parent (eg. PCI nexus driver) uses this data
*
* we cannot use driver data in the other usb nodes since
* usb drivers may need to use this
*/
if (mdb_usba_is_root_hub(&devinfo)) {
usba_hcdi_t hcdi_struct;
uintptr_t hcdi_addr = mdb_usba_hcdi_get_hcdi(&devinfo);
if (!hcdi_addr) {
return (0);
}
/* Read hcdi struct into local address space. */
if (mdb_vread(&hcdi_struct, sizeof (usba_hcdi_t),
hcdi_addr) == -1) {
mdb_warn("failed to read hcdi struct");
return (0);
}
return ((uintptr_t)hcdi_struct.hcdi_usba_device);
} else {
struct dev_info devinfo;
if (mdb_vread(&devinfo, sizeof (struct dev_info),
dip_addr) == -1) {
mdb_warn("failed to read dev_info at %p", dip_addr);
return (0);
}
/* casts needed to keep lint happy */
return ((uintptr_t)devinfo.devi_parent_data);
}
}
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