linux_sg.c revision 1.11
1 /* $NetBSD: linux_sg.c,v 1.11 2007/10/19 18:52:11 njoly Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Soren S. Jorvang. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 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 AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: linux_sg.c,v 1.11 2007/10/19 18:52:11 njoly Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/ioctl.h> 34 #include <sys/file.h> 35 #include <sys/filedesc.h> 36 #include <sys/mount.h> 37 #include <sys/proc.h> 38 #include <sys/device.h> 39 40 #include <sys/scsiio.h> 41 #include <dev/scsipi/scsipi_all.h> 42 #include <dev/scsipi/scsiconf.h> 43 44 #include <sys/syscallargs.h> 45 46 #include <compat/linux/common/linux_types.h> 47 #include <compat/linux/common/linux_ioctl.h> 48 #include <compat/linux/common/linux_signal.h> 49 #include <compat/linux/common/linux_sg.h> 50 #include <compat/linux/common/linux_ipc.h> 51 #include <compat/linux/common/linux_sem.h> 52 53 #include <compat/linux/linux_syscallargs.h> 54 55 int linux_sg_version = 30125; 56 57 #ifdef LINUX_SG_DEBUG 58 #define DPRINTF(a) printf a 59 #else 60 #define DPRINTF(a) 61 #endif 62 63 #ifdef LINUX_SG_DEBUG 64 static void dump_sg_io(struct linux_sg_io_hdr *); 65 static void dump_scsireq(struct scsireq *); 66 #endif 67 68 static int bsd_to_linux_host_status(int); 69 static int bsd_to_linux_driver_status(int); 70 71 int 72 linux_ioctl_sg(struct lwp *l, struct linux_sys_ioctl_args *uap, 73 register_t *retval) 74 { 75 struct file *fp; 76 struct filedesc *fdp; 77 u_long com = SCARG(uap, com); 78 int error = 0; 79 int (*ioctlf)(struct file *, u_long, void *, struct lwp *); 80 struct linux_sg_io_hdr lreq; 81 struct scsireq req; 82 83 fdp = l->l_proc->p_fd; 84 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 85 return EBADF; 86 87 FILE_USE(fp); 88 ioctlf = fp->f_ops->fo_ioctl; 89 90 *retval = 0; 91 DPRINTF(("Command = %lx\n", com)); 92 switch (com) { 93 case LINUX_SG_GET_VERSION_NUM: { 94 error = copyout(&version, SCARG(uap, data), 95 sizeof(linux_sg_version)); 96 break; 97 } 98 case LINUX_SG_IO: 99 error = copyin(SCARG(uap, data), &lreq, sizeof(lreq)); 100 if (error) { 101 DPRINTF(("failed to copy in request data %d\n", error)); 102 break; 103 } 104 105 #ifdef LINUX_SG_DEBUG 106 dump_sg_io(&lreq); 107 #endif 108 (void)memset(&req, 0, sizeof(req)); 109 switch (lreq.dxfer_direction) { 110 case SG_DXFER_TO_DEV: 111 req.flags = SCCMD_WRITE; 112 break; 113 case SG_DXFER_FROM_DEV: 114 req.flags = SCCMD_READ; 115 break; 116 default: 117 DPRINTF(("unknown direction %d\n", 118 lreq.dxfer_direction)); 119 error = EINVAL; 120 goto done; 121 } 122 if (lreq.iovec_count != 0) { 123 /* XXX: Not yet */ 124 error = EOPNOTSUPP; 125 DPRINTF(("scatter/gather not supported\n")); 126 break; 127 } 128 129 if (lreq.cmd_len > sizeof(req.cmd)) { 130 DPRINTF(("invalid command length %d\n", lreq.cmd_len)); 131 error = EINVAL; 132 break; 133 } 134 135 error = copyin(lreq.cmdp, req.cmd, lreq.cmd_len); 136 if (error) { 137 DPRINTF(("failed to copy in cmd data %d\n", error)); 138 break; 139 } 140 141 req.timeout = lreq.timeout; 142 req.cmdlen = lreq.cmd_len; 143 req.datalen = lreq.dxfer_len; 144 req.databuf = lreq.dxferp; 145 146 error = ioctlf(fp, SCIOCCOMMAND, (void *)&req, l); 147 if (error) { 148 DPRINTF(("SCIOCCOMMAND failed %d\n", error)); 149 break; 150 } 151 #ifdef LINUX_SG_DEBUG 152 dump_scsireq(&req); 153 #endif 154 if (req.senselen_used) { 155 if (req.senselen > lreq.mx_sb_len) 156 req.senselen = lreq.mx_sb_len; 157 lreq.sb_len_wr = req.senselen; 158 error = copyout(req.sense, lreq.sbp, req.senselen); 159 if (error) { 160 DPRINTF(("sense copyout failed %d\n", error)); 161 break; 162 } 163 } else { 164 lreq.sb_len_wr = 0; 165 } 166 167 lreq.status = req.status; 168 lreq.masked_status = 0; /* XXX */ 169 lreq.host_status = bsd_to_linux_host_status(req.retsts); 170 lreq.sb_len_wr = req.datalen_used; 171 lreq.driver_status = bsd_to_linux_driver_status(req.error); 172 lreq.resid = req.datalen - req.datalen_used; 173 lreq.duration = req.timeout; /* XXX */ 174 lreq.info = 0; /* XXX */ 175 error = copyout(&lreq, SCARG(uap, data), sizeof(lreq)); 176 if (error) { 177 DPRINTF(("failed to copy out req data %d\n", error)); 178 } 179 break; 180 case LINUX_SG_EMULATED_HOST: 181 case LINUX_SG_SET_TRANSFORM: 182 case LINUX_SG_GET_TRANSFORM: 183 case LINUX_SG_GET_NUM_WAITING: 184 case LINUX_SG_SCSI_RESET: 185 case LINUX_SG_GET_REQUEST_TABLE: 186 case LINUX_SG_SET_KEEP_ORPHAN: 187 case LINUX_SG_GET_KEEP_ORPHAN: 188 case LINUX_SG_GET_ACCESS_COUNT: 189 case LINUX_SG_SET_FORCE_LOW_DMA: 190 case LINUX_SG_GET_LOW_DMA: 191 case LINUX_SG_GET_SG_TABLESIZE: 192 case LINUX_SG_GET_SCSI_ID: 193 case LINUX_SG_SET_FORCE_PACK_ID: 194 case LINUX_SG_GET_PACK_ID: 195 case LINUX_SG_SET_RESERVED_SIZE: 196 case LINUX_SG_GET_RESERVED_SIZE: 197 error = ENODEV; 198 break; 199 200 /* version 2 interfaces */ 201 case LINUX_SG_SET_TIMEOUT: 202 break; 203 case LINUX_SG_GET_TIMEOUT: 204 /* ioctl returns value..., grr. */ 205 *retval = 60; 206 break; 207 case LINUX_SG_GET_COMMAND_Q: 208 case LINUX_SG_SET_COMMAND_Q: 209 case LINUX_SG_SET_DEBUG: 210 case LINUX_SG_NEXT_CMD_LEN: 211 error = ENODEV; 212 break; 213 } 214 215 done: 216 FILE_UNUSE(fp, l); 217 218 DPRINTF(("Return=%d\n", error)); 219 return error; 220 } 221 222 static int 223 bsd_to_linux_driver_status(int bs) 224 { 225 switch (bs) { 226 default: 227 case XS_NOERROR: 228 return 0; 229 case XS_SENSE: 230 case XS_SHORTSENSE: 231 return LINUX_DRIVER_SENSE; 232 case XS_RESOURCE_SHORTAGE: 233 return LINUX_DRIVER_SOFT; 234 case XS_DRIVER_STUFFUP: 235 return LINUX_DRIVER_ERROR; 236 case XS_SELTIMEOUT: 237 case XS_TIMEOUT: 238 return LINUX_DRIVER_TIMEOUT; 239 case XS_BUSY: 240 return LINUX_DRIVER_BUSY; 241 case XS_RESET: 242 return LINUX_SUGGEST_ABORT; 243 case XS_REQUEUE: 244 return LINUX_SUGGEST_RETRY; 245 } 246 } 247 248 static int 249 bsd_to_linux_host_status(int bs) 250 { 251 switch (bs) { 252 case SCCMD_OK: 253 case SCCMD_SENSE: 254 return LINUX_DID_OK; 255 case SCCMD_TIMEOUT: 256 return LINUX_DID_TIME_OUT; 257 case SCCMD_BUSY: 258 return LINUX_DID_BUS_BUSY; 259 case SCCMD_UNKNOWN: 260 default: 261 return LINUX_DID_ERROR; 262 } 263 } 264 265 266 267 #ifdef LINUX_SG_DEBUG 268 static void 269 dump_sg_io(struct linux_sg_io_hdr *lr) 270 { 271 printf("linuxreq [interface_id=%x, dxfer_direction=%d, cmd_len=%d, " 272 "mx_sb_len=%d, iovec_count=%d, dxfer_len=%d, dxferp=%p, " 273 "cmdp=%p, sbp=%p, timeout=%u, flags=%d, pack_id=%d, " 274 "usr_ptr=%p, status=%u, masked_status=%u, sb_len_wr=%u, " 275 "host_status=%u, driver_status=%u, resid=%d, duration=%u, " 276 "info=%u]\n", 277 lr->interface_id, lr->dxfer_direction, lr->cmd_len, 278 lr->mx_sb_len, lr->iovec_count, lr->dxfer_len, lr->dxferp, 279 lr->cmdp, lr->sbp, lr->timeout, lr->flags, lr->pack_id, 280 lr->usr_ptr, lr->status, lr->masked_status, lr->sb_len_wr, 281 lr->host_status, lr->driver_status, lr->resid, lr->duration, 282 lr->info); 283 } 284 285 static void 286 dump_scsireq(struct scsireq *br) 287 { 288 int i; 289 printf("bsdreq [flags=%lx, timeout=%lu, cmd=[ ", 290 br->flags, br->timeout); 291 for (i = 0; i < sizeof(br->cmd) / sizeof(br->cmd[0]); i++) 292 printf("%.2u ", br->cmd[i]); 293 printf("], cmdlen=%u, databuf=%p, datalen=%lu, datalen_used=%lu, " 294 "sense=[ ", 295 br->cmdlen, br->databuf, br->datalen, br->datalen_used); 296 for (i = 0; i < sizeof(br->sense) / sizeof(br->sense[0]); i++) 297 printf("%.2u ", br->sense[i]); 298 printf("], senselen=%u, senselen_used=%u, status=%u, retsts=%u, " 299 "error=%d]\n", 300 br->senselen, br->senselen_used, br->status, br->retsts, br->error); 301 } 302 #endif 303
Indexes created Thu Sep 25 02:09:54 GMT 2025