1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * SDBC user level ioctl interface 28 */ 29 30 #include <stdio.h> 31 #include <unistd.h> 32 #include <stdlib.h> 33 #include <sys/types.h> 34 #include <fcntl.h> 35 #include <strings.h> 36 37 #include <sys/nsctl/sd_cache.h> 38 #include <sys/nsctl/sd_conf.h> 39 #include <sys/nsctl/sdbc_ioctl.h> 40 #include <sys/unistat/spcs_s.h> 41 #include <sys/unistat/spcs_s_u.h> 42 43 #include <sys/nsctl/sv.h> 44 #include <sys/nsctl/sv_impl.h> 45 46 47 const char *__sdbc_dev = "/dev/sdbc"; 48 static int __sdbc_fd; 49 50 51 static int 52 __sdbc_open(void) 53 { 54 int fd; 55 56 fd = open("/dev/nsctl", O_RDONLY); 57 if (fd >= 0) 58 (void) close(fd); 59 60 fd = open(__sdbc_dev, O_RDONLY); 61 if (fd < 0) 62 return (-1); 63 64 return (__sdbc_fd = fd); 65 } 66 67 68 static void 69 sv_list() 70 { 71 sv_name_t svn[1]; 72 sv_name_t *svn_system; 73 sv_list_t svl; 74 static int fd = -1; 75 76 if (fd < 0) 77 fd = open(SV_DEVICE, O_RDONLY); 78 if (fd < 0) 79 return; 80 81 bzero(&svl, sizeof (svl)); 82 bzero(&svn[0], sizeof (svn)); 83 84 svl.svl_names = &svn[0]; 85 svl.svl_error = spcs_s_ucreate(); 86 87 if (ioctl(fd, SVIOC_LIST, &svl) < 0) 88 return; 89 90 svn_system = calloc(svl.svl_maxdevs, sizeof (*svn)); 91 if (svn_system == NULL) 92 return; 93 94 /* Grab the system list from the driver */ 95 svl.svl_count = svl.svl_maxdevs; 96 svl.svl_names = svn_system; 97 98 (void) ioctl(fd, SVIOC_LIST, &svl); 99 100 free(svn_system); 101 spcs_s_ufree(&svl.svl_error); 102 } 103 104 105 int 106 sdbc_ioctl(long cmd, long a0, long a1, long a2, long a3, long a4, 107 spcs_s_info_t *ustatus) 108 { 109 _sdbc_ioctl_t args; 110 int rc; 111 112 *ustatus = NULL; 113 114 if (!__sdbc_fd && __sdbc_open() < 0) 115 return (-1); 116 117 switch (cmd) { 118 /* 119 * These ioctls work on open cache descriptors. The sv_list() function 120 * has the side-effect of re-opening all configured descriptors. 121 * Without this call, devices seem to "disappear" from the system when 122 * certain reconfiguration operations, for example II or SNDR disable, 123 * are done. 124 * It does rely on SV being configured, so in an STE-only environment 125 * the disappearing will still seem to happen. 126 */ 127 case SDBC_SET_CD_HINT: 128 case SDBC_GET_CD_HINT: 129 case SDBC_STATS: 130 case SDBC_GET_CD_BLK: 131 case SDBC_INJ_IOERR: 132 case SDBC_CLR_IOERR: 133 sv_list(); 134 break; 135 136 default: 137 break; 138 } 139 140 args.arg0 = a0; 141 args.arg1 = a1; 142 args.arg2 = a2; 143 args.arg3 = a3; 144 args.arg4 = a4; 145 args.magic = _SD_MAGIC; /* for versioning */ 146 args.sdbc_ustatus = spcs_s_ucreate(); 147 148 if ((rc = ioctl(__sdbc_fd, cmd, &args)) < 0) { 149 *ustatus = args.sdbc_ustatus; 150 } else { 151 spcs_s_ufree(&args.sdbc_ustatus); 152 *ustatus = NULL; 153 } 154 155 return (rc); 156 } 157