1 /* $NetBSD: rf_callback.c,v 1.8 2002/10/25 03:14:37 oster Exp $ */ 2 /* 3 * Copyright (c) 1995 Carnegie-Mellon University. 4 * All rights reserved. 5 * 6 * Author: Jim Zelenka 7 * 8 * Permission to use, copy, modify and distribute this software and 9 * its documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 16 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie the 26 * rights to redistribute these changes. 27 */ 28 29 /***************************************************************************************** 30 * 31 * callback.c -- code to manipulate callback descriptor 32 * 33 ****************************************************************************************/ 34 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: rf_callback.c,v 1.8 2002/10/25 03:14:37 oster Exp $"); 38 39 #include <dev/raidframe/raidframevar.h> 40 #include <sys/pool.h> 41 42 #include "rf_archs.h" 43 #include "rf_threadstuff.h" 44 #include "rf_callback.h" 45 #include "rf_debugMem.h" 46 #include "rf_freelist.h" 47 #include "rf_shutdown.h" 48 49 static struct pool rf_callback_pool; 50 51 #define RF_MAX_FREE_CALLBACK 64 52 #define RF_CALLBACK_INC 4 53 #define RF_CALLBACK_INITIAL 32 54 55 static void rf_ShutdownCallback(void *); 56 static void 57 rf_ShutdownCallback(ignored) 58 void *ignored; 59 { 60 pool_destroy(&rf_callback_pool); 61 } 62 63 int 64 rf_ConfigureCallback(listp) 65 RF_ShutdownList_t **listp; 66 { 67 int rc; 68 69 pool_init(&rf_callback_pool, sizeof(RF_CallbackDesc_t), 0, 0, 70 RF_CALLBACK_INITIAL, "rf_callbackpl", NULL); 71 pool_sethiwat(&rf_callback_pool, RF_MAX_FREE_CALLBACK); 72 rc = rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL); 73 if (rc) { 74 rf_print_unable_to_add_shutdown(__FILE__,__LINE__, rc); 75 rf_ShutdownCallback(NULL); 76 return (rc); 77 } 78 return (0); 79 } 80 81 RF_CallbackDesc_t * 82 rf_AllocCallbackDesc() 83 { 84 RF_CallbackDesc_t *p; 85 86 p = pool_get(&rf_callback_pool, PR_NOWAIT); 87 return (p); 88 } 89 90 void 91 rf_FreeCallbackDesc(p) 92 RF_CallbackDesc_t *p; 93 { 94 pool_put(&rf_callback_pool, p); 95 } 96