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/*-
* Copyright (c) 2006 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <efi.h>
#include <efilib.h>
struct entry {
EFI_HANDLE handle;
EFI_HANDLE alias;
struct devsw *dev;
int unit;
uint64_t extra;
};
struct entry *entry;
int nentries;
int
efi_register_handles(struct devsw *sw, EFI_HANDLE *handles,
EFI_HANDLE *aliases, int count)
{
size_t sz;
int idx, unit;
idx = nentries;
nentries += count;
sz = nentries * sizeof(struct entry);
entry = (entry == NULL) ? malloc(sz) : realloc(entry, sz);
if (entry == NULL)
return (ENOMEM);
for (unit = 0; idx < nentries; idx++, unit++) {
entry[idx].handle = handles[unit];
if (aliases != NULL)
entry[idx].alias = aliases[unit];
else
entry[idx].alias = NULL;
entry[idx].dev = sw;
entry[idx].unit = unit;
}
return (0);
}
EFI_HANDLE
efi_find_handle(struct devsw *dev, int unit)
{
int idx;
for (idx = 0; idx < nentries; idx++) {
if (entry[idx].dev != dev)
continue;
if (entry[idx].unit != unit)
continue;
return (entry[idx].handle);
}
return (NULL);
}
int
efi_handle_lookup(EFI_HANDLE h, struct devsw **dev, int *unit, uint64_t *extra)
{
int idx;
for (idx = 0; idx < nentries; idx++) {
if (entry[idx].handle != h && entry[idx].alias != h)
continue;
if (dev != NULL)
*dev = entry[idx].dev;
if (unit != NULL)
*unit = entry[idx].unit;
if (extra != NULL)
*extra = entry[idx].extra;
return (0);
}
return (ENOENT);
}
int
efi_handle_update_dev(EFI_HANDLE h, struct devsw *dev, int unit,
uint64_t guid)
{
int idx;
for (idx = 0; idx < nentries; idx++) {
if (entry[idx].handle != h)
continue;
entry[idx].dev = dev;
entry[idx].unit = unit;
entry[idx].alias = NULL;
entry[idx].extra = guid;
return (0);
}
return (ENOENT);
}
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