1/*- 2 * Copyright (c) 2006 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include <efi.h> 31#include <efilib.h> 32 33struct entry { 34 EFI_HANDLE handle; 35 struct devsw *dev; 36 int unit; 37}; 38 39struct entry *entry; 40int nentries; 41 42int 43efi_register_handles(struct devsw *sw, EFI_HANDLE *handles, int count) 44{ 45 size_t sz; 46 int idx, unit; 47 48 idx = nentries; 49 nentries += count; 50 sz = nentries * sizeof(struct entry); 51 entry = (entry == NULL) ? malloc(sz) : realloc(entry, sz); 52 for (unit = 0; idx < nentries; idx++, unit++) { 53 entry[idx].handle = handles[unit]; 54 entry[idx].dev = sw; 55 entry[idx].unit = unit; 56 } 57 return (0); 58} 59 60EFI_HANDLE 61efi_find_handle(struct devsw *dev, int unit) 62{ 63 int idx; 64 65 for (idx = 0; idx < nentries; idx++) { 66 if (entry[idx].dev != dev) 67 continue; 68 if (entry[idx].unit != unit) 69 continue; 70 return (entry[idx].handle); 71 } 72 return (NULL); 73} 74 75int 76efi_handle_lookup(EFI_HANDLE h, struct devsw **dev, int *unit) 77{ 78 int idx; 79 80 for (idx = 0; idx < nentries; idx++) { 81 if (entry[idx].handle != h) 82 continue; 83 if (dev != NULL) 84 *dev = entry[idx].dev; 85 if (unit != NULL) 86 *unit = entry[idx].unit; 87 return (0); 88 } 89 return (ENOENT); 90} 91