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