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      1 /*	$NetBSD: rf_callback.c,v 1.25 2021/07/23 00:54:45 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 (at) 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 1.25 2021/07/23 00:54:45 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_general.h"
     47 #include "rf_shutdown.h"
     48 #include "rf_netbsd.h"
     49 #include "rf_raid.h"
     50 
     51 #define RF_MAX_FREE_CALLBACK 64
     52 #define RF_MIN_FREE_CALLBACK 32
     53 
     54 static void rf_ShutdownCallback(void *);
     55 static void
     56 rf_ShutdownCallback(void *arg)
     57 {
     58 	RF_Raid_t *raidPtr;
     59 
     60 	raidPtr = (RF_Raid_t *) arg;
     61 
     62 	pool_destroy(&raidPtr->pools.callbackf);
     63 	pool_destroy(&raidPtr->pools.callbackv);
     64 }
     65 
     66 int
     67 rf_ConfigureCallback(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr,
     68 		     RF_Config_t *cfgPtr)
     69 {
     70 
     71 	rf_pool_init(raidPtr, raidPtr->poolNames.callbackf, &raidPtr->pools.callbackf, sizeof(RF_CallbackFuncDesc_t),
     72 		     "callbackf", RF_MIN_FREE_CALLBACK, RF_MAX_FREE_CALLBACK);
     73 	rf_pool_init(raidPtr, raidPtr->poolNames.callbackv, &raidPtr->pools.callbackv, sizeof(RF_CallbackValueDesc_t),
     74 		     "callbackv", RF_MIN_FREE_CALLBACK, RF_MAX_FREE_CALLBACK);
     75 	rf_ShutdownCreate(listp, rf_ShutdownCallback, raidPtr);
     76 
     77 	return (0);
     78 }
     79 
     80 RF_CallbackFuncDesc_t *
     81 rf_AllocCallbackFuncDesc(RF_Raid_t *raidPtr)
     82 {
     83 	return pool_get(&raidPtr->pools.callbackf, PR_WAITOK);
     84 }
     85 
     86 void
     87 rf_FreeCallbackFuncDesc(RF_Raid_t *raidPtr, RF_CallbackFuncDesc_t *p)
     88 {
     89 	pool_put(&raidPtr->pools.callbackf, p);
     90 }
     91 
     92 RF_CallbackValueDesc_t *
     93 rf_AllocCallbackValueDesc(RF_Raid_t *raidPtr)
     94 {
     95 	return pool_get(&raidPtr->pools.callbackv, PR_WAITOK);
     96 }
     97 
     98 void
     99 rf_FreeCallbackValueDesc(RF_Raid_t *raidPtr, RF_CallbackValueDesc_t *p)
    100 {
    101 	pool_put(&raidPtr->pools.callbackv, p);
    102 }
    103