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      1 /*	$NetBSD: rf_compat32.c,v 1.9 2021/12/11 19:24:21 mrg Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2017 Matthew R. Green
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/types.h>
     30 #include <sys/param.h>
     31 #include <sys/systm.h>
     32 #include <sys/module.h>
     33 #include <sys/compat_stub.h>
     34 
     35 #include <dev/raidframe/raidframeio.h>
     36 #include <dev/raidframe/raidframevar.h>
     37 
     38 #include "rf_raid.h"
     39 #include "rf_kintf.h"
     40 #include "rf_compat32.h"
     41 
     42 #include <compat/netbsd32/netbsd32.h>
     43 
     44 typedef netbsd32_int64 RF_SectorNum_t32;
     45 typedef netbsd32_int64 RF_StripeNum_t32;
     46 
     47 /* from <dev/raidframe/raidframevar.h> */
     48 typedef struct RF_Config_s32 {
     49 	RF_RowCol_t numCol, numSpare;		/* number of rows, columns,
     50 						 * and spare disks */
     51 	dev_t   devs[RF_MAXROW][RF_MAXCOL];	/* device numbers for disks
     52 						 * comprising array */
     53 	char    devnames[RF_MAXROW][RF_MAXCOL][50];	/* device names */
     54 	dev_t   spare_devs[RF_MAXSPARE];	/* device numbers for spare
     55 						 * disks */
     56 	char    spare_names[RF_MAXSPARE][50];	/* device names */
     57 	RF_SectorNum_t32 sectPerSU;	/* sectors per stripe unit */
     58 	RF_StripeNum_t32 SUsPerPU;/* stripe units per parity unit */
     59 	RF_StripeNum_t32 SUsPerRU;/* stripe units per reconstruction unit */
     60 	RF_ParityConfig_t parityConfig;	/* identifies the RAID architecture to
     61 					 * be used */
     62 	RF_DiskQueueType_t diskQueueType;	/* 'f' = fifo, 'c' = cvscan,
     63 						 * not used in kernel */
     64 	char    maxOutstandingDiskReqs;	/* # concurrent reqs to be sent to a
     65 					 * disk.  not used in kernel. */
     66 	char    debugVars[RF_MAXDBGV][50];	/* space for specifying debug
     67 						 * variables & their values */
     68 	unsigned int layoutSpecificSize;	/* size in bytes of
     69 						 * layout-specific info */
     70 	netbsd32_pointer_t   layoutSpecific;	/* a pointer to a layout-specific structure to
     71 				 * be copied in */
     72 	int     force;                          /* if !0, ignore many fatal
     73 						   configuration conditions */
     74 	/*
     75 	   "force" is used to override cases where the component labels would
     76 	   indicate that configuration should not proceed without user
     77 	   intervention
     78 	 */
     79 } RF_Config_t32;
     80 
     81 static int
     82 rf_config_netbsd32(struct raid_softc *rs, void *data)
     83 {
     84 	RF_Config_t32 *u_cfg32 = NETBSD32PTR64(*(netbsd32_pointer_t *)data);
     85 	RF_Config_t *k_cfg;
     86 	RF_Config_t32 *k_cfg32;
     87 	int rv;
     88 
     89 	k_cfg32 = RF_Malloc(sizeof(*k_cfg32));
     90 	if (k_cfg32 == NULL)
     91 		return ENOMEM;
     92 
     93 	rv = copyin(u_cfg32, k_cfg32, sizeof(RF_Config_t32));
     94 	if (rv) {
     95 		RF_Free(k_cfg32, sizeof(RF_Config_t32));
     96 		return ENOMEM;
     97 	}
     98 
     99 	k_cfg = RF_Malloc(sizeof(*k_cfg));
    100 	if (k_cfg == NULL) {
    101 		RF_Free(k_cfg32, sizeof(RF_Config_t32));
    102 		return ENOMEM;
    103 	}
    104 	k_cfg->numCol = k_cfg32->numCol;
    105 	k_cfg->numSpare = k_cfg32->numSpare;
    106 	memcpy(k_cfg->devs, k_cfg32->devs, sizeof(k_cfg->devs));
    107 	memcpy(k_cfg->devnames, k_cfg32->devnames, sizeof(k_cfg->devnames));
    108 	memcpy(k_cfg->spare_devs, k_cfg32->spare_devs,
    109 	    sizeof(k_cfg->spare_devs));
    110 	memcpy(k_cfg->spare_names, k_cfg32->spare_names,
    111 	    sizeof(k_cfg->spare_names));
    112 	k_cfg->sectPerSU = k_cfg32->sectPerSU;
    113 	k_cfg->SUsPerPU = k_cfg32->SUsPerPU;
    114 	k_cfg->SUsPerRU = k_cfg32->SUsPerRU;
    115 	k_cfg->parityConfig = k_cfg32->parityConfig;
    116 	memcpy(k_cfg->diskQueueType, k_cfg32->diskQueueType,
    117 	    sizeof(k_cfg->diskQueueType));
    118 	k_cfg->maxOutstandingDiskReqs = k_cfg32->maxOutstandingDiskReqs;
    119 	memcpy(k_cfg->debugVars, k_cfg32->debugVars, sizeof(k_cfg->debugVars));
    120 	k_cfg->layoutSpecificSize = k_cfg32->layoutSpecificSize;
    121 	k_cfg->layoutSpecific = NETBSD32PTR64(k_cfg32->layoutSpecific);
    122 	k_cfg->force = k_cfg32->force;
    123 
    124 	return rf_construct(rs, k_cfg);
    125 }
    126 
    127 static int
    128 rf_get_info_netbsd32(RF_Raid_t *raidPtr, void *data)
    129 {
    130 	int retcode;
    131 	void *ucfgp = NETBSD32PTR64(*(netbsd32_pointer_t *)data);
    132 
    133 	RF_DeviceConfig_t *d_cfg = RF_Malloc(sizeof(*d_cfg));
    134 	if (d_cfg == NULL)
    135 		return ENOMEM;
    136 
    137 	retcode = rf_get_info(raidPtr, d_cfg);
    138 	if (retcode == 0) {
    139 	    retcode = copyout(d_cfg, ucfgp, sizeof(*d_cfg));
    140 	}
    141 	RF_Free(d_cfg, sizeof(RF_DeviceConfig_t));
    142 	return retcode;
    143 }
    144 
    145 static int
    146 raidframe_netbsd32_ioctl(struct raid_softc *rs, u_long cmd, void *data)
    147 {
    148 	RF_Raid_t *raidPtr = rf_get_raid(rs);
    149 
    150 	switch (cmd) {
    151 	case RAIDFRAME_GET_INFO32:
    152 		if (!rf_inited(rs))
    153 			return ENXIO;
    154 		return rf_get_info_netbsd32(raidPtr, data);
    155 	case RAIDFRAME_CONFIGURE32:
    156 		return rf_config_netbsd32(rs, data);
    157 	default:
    158 		return EPASSTHROUGH;
    159 	}
    160 }
    161 
    162 
    163 static void
    164 raidframe_netbsd32_init(void)
    165 {
    166 
    167 	MODULE_HOOK_SET(raidframe_netbsd32_ioctl_hook,
    168 	    raidframe_netbsd32_ioctl);
    169 }
    170 
    171 static void
    172 raidframe_netbsd32_fini(void)
    173 {
    174 
    175 	MODULE_HOOK_UNSET(raidframe_netbsd32_ioctl_hook);
    176 }
    177 
    178 MODULE(MODULE_CLASS_EXEC, compat_netbsd32_raid, "raid,compat_netbsd32");
    179 
    180 static int
    181 compat_netbsd32_raid_modcmd(modcmd_t cmd, void *arg)
    182 {
    183 
    184 	switch (cmd) {
    185 	case MODULE_CMD_INIT:
    186 		raidframe_netbsd32_init();
    187 		return 0;
    188 	case MODULE_CMD_FINI:
    189 		raidframe_netbsd32_fini();
    190 		return 0;
    191 	default:
    192 		return ENOTTY;
    193 	}
    194 }
    195 
    196