linux_sg.c revision 1.3
1 /* $NetBSD: linux_sg.c,v 1.3 2005/02/13 09:05:31 christos 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 1.3 2005/02/13 09:05:31 christos 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 39 #include <sys/scsiio.h> 40 #include <dev/scsipi/scsipi_all.h> 41 #include <dev/scsipi/scsiconf.h> 42 43 #include <sys/sa.h> 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 51 #include <compat/linux/linux_syscallargs.h> 52 53 #ifdef LINUX_SG_DEBUG 54 #define DPRINTF(a) printf a 55 #else 56 #define DPRINTF(a) 57 #endif 58 59 #ifdef LINUX_SG_DEBUG 60 static void dump_sg_io(struct linux_sg_io_hdr *); 61 static void dump_scsireq(struct scsireq *); 62 #endif 63 64 static int bsd_to_linux_host_status(int); 65 static int bsd_to_linux_driver_status(int); 66 67 int 68 linux_ioctl_sg(struct proc *p, struct linux_sys_ioctl_args *uap, 69 register_t *retval) 70 { 71 struct file *fp; 72 struct filedesc *fdp; 73 u_long com = SCARG(uap, com); 74 int error = 0; 75 int (*ioctlf)(struct file *, u_long, void *, struct proc *); 76 struct linux_sg_io_hdr lreq; 77 struct scsireq req; 78 79 fdp = p->p_fd; 80 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 81 return EBADF; 82 83 FILE_USE(fp); 84 ioctlf = fp->f_ops->fo_ioctl; 85 86 *retval = 0; 87 DPRINTF(("Command = %lx\n", com)); 88 switch (com) { 89 case LINUX_SG_GET_VERSION_NUM: { 90 short version = 30124; 91 error = copyout(&version, SCARG(uap, data), sizeof(version)); 92 break; 93 } 94 case LINUX_SG_IO: 95 error = copyin(SCARG(uap, data), &lreq, sizeof(lreq)); 96 if (error) { 97 DPRINTF(("failed to copy in request data %d\n", error)); 98 break; 99 } 100 101 #ifdef LINUX_SG_DEBUG 102 dump_sg_io(&lreq); 103 #endif 104 (void)memset(&req, 0, sizeof(req)); 105 switch (lreq.dxfer_direction) { 106 case SG_DXFER_TO_DEV: 107 req.flags = SCCMD_WRITE; 108 break; 109 case SG_DXFER_FROM_DEV: 110 req.flags = SCCMD_READ; 111 break; 112 default: 113 DPRINTF(("unknown direction %d\n", 114 lreq.dxfer_direction)); 115 error = EINVAL; 116 goto done; 117 } 118 if (lreq.iovec_count != 0) { 119 /* XXX: Not yet */ 120 error = EOPNOTSUPP; 121 DPRINTF(("scatter/gather not supported\n")); 122 break; 123 } 124 125 if (lreq.cmd_len > sizeof(req.cmd)) { 126 DPRINTF(("invalid command length %d\n", lreq.cmd_len)); 127 error = EINVAL; 128 break; 129 } 130 131 error = copyin(lreq.cmdp, req.cmd, lreq.cmd_len); 132 if (error) { 133 DPRINTF(("failed to copy in cmd data %d\n", error)); 134 break; 135 } 136 137 req.timeout = lreq.timeout; 138 req.cmdlen = lreq.cmd_len; 139 req.datalen = lreq.dxfer_len; 140 req.databuf = lreq.dxferp; 141 142 error = ioctlf(fp, SCIOCCOMMAND, (caddr_t)&req, p); 143 if (error) { 144 DPRINTF(("SCIOCCOMMAND failed %d\n", error)); 145 break; 146 } 147 #ifdef LINUX_SG_DEBUG 148 dump_scsireq(&req); 149 #endif 150 if (req.senselen_used) { 151 if (req.senselen > lreq.mx_sb_len) 152 req.senselen = lreq.mx_sb_len; 153 lreq.sb_len_wr = req.senselen; 154 error = copyout(req.sense, lreq.sbp, req.senselen); 155 if (error) { 156 DPRINTF(("sense copyout failed %d\n", error)); 157 break; 158 } 159 } else { 160 lreq.sb_len_wr = 0; 161 } 162 163 lreq.status = req.status; 164 lreq.masked_status = 0; /* XXX */ 165 lreq.host_status = bsd_to_linux_host_status(req.retsts); 166 lreq.sb_len_wr = req.datalen_used; 167 lreq.driver_status = bsd_to_linux_driver_status(req.error); 168 lreq.resid = req.datalen - req.datalen_used; 169 lreq.duration = req.timeout; /* XXX */ 170 lreq.info = 0; /* XXX */ 171 error = copyout(&lreq, SCARG(uap, data), sizeof(lreq)); 172 if (error) 173 DPRINTF(("failed to copy out req data %d\n", error)); 174 break; 175 case LINUX_SG_EMULATED_HOST: 176 case LINUX_SG_SET_TRANSFORM: 177 case LINUX_SG_GET_TRANSFORM: 178 case LINUX_SG_GET_NUM_WAITING: 179 case LINUX_SG_SCSI_RESET: 180 case LINUX_SG_GET_REQUEST_TABLE: 181 case LINUX_SG_SET_KEEP_ORPHAN: 182 case LINUX_SG_GET_KEEP_ORPHAN: 183 case LINUX_SG_GET_ACCESS_COUNT: 184 case LINUX_SG_SET_FORCE_LOW_DMA: 185 case LINUX_SG_GET_LOW_DMA: 186 case LINUX_SG_GET_SG_TABLESIZE: 187 case LINUX_SG_GET_SCSI_ID: 188 case LINUX_SG_SET_FORCE_PACK_ID: 189 case LINUX_SG_GET_PACK_ID: 190 case LINUX_SG_SET_RESERVED_SIZE: 191 case LINUX_SG_GET_RESERVED_SIZE: 192 error = ENODEV; 193 break; 194 195 /* version 2 interfaces */ 196 case LINUX_SG_SET_TIMEOUT: 197 break; 198 case LINUX_SG_GET_TIMEOUT: 199 /* ioctl returns value..., grr. */ 200 *retval = 60; 201 break; 202 case LINUX_SG_GET_COMMAND_Q: 203 case LINUX_SG_SET_COMMAND_Q: 204 case LINUX_SG_SET_DEBUG: 205 case LINUX_SG_NEXT_CMD_LEN: 206 error = ENODEV; 207 break; 208 } 209 210 done: 211 FILE_UNUSE(fp, p); 212 213 DPRINTF(("Return=%d\n", error)); 214 return error; 215 } 216 217 static int 218 bsd_to_linux_driver_status(int bs) 219 { 220 switch (bs) { 221 default: 222 case XS_NOERROR: 223 return 0; 224 case XS_SENSE: 225 case XS_SHORTSENSE: 226 return LINUX_DRIVER_SENSE; 227 case XS_RESOURCE_SHORTAGE: 228 return LINUX_DRIVER_SOFT; 229 case XS_DRIVER_STUFFUP: 230 return LINUX_DRIVER_ERROR; 231 case XS_SELTIMEOUT: 232 case XS_TIMEOUT: 233 return LINUX_DRIVER_TIMEOUT; 234 case XS_BUSY: 235 return LINUX_DRIVER_BUSY; 236 case XS_RESET: 237 return LINUX_SUGGEST_ABORT; 238 case XS_REQUEUE: 239 return LINUX_SUGGEST_RETRY; 240 } 241 } 242 243 static int 244 bsd_to_linux_host_status(int bs) 245 { 246 switch (bs) { 247 case SCCMD_OK: 248 case SCCMD_SENSE: 249 return LINUX_DID_OK; 250 case SCCMD_TIMEOUT: 251 return LINUX_DID_TIME_OUT; 252 case SCCMD_BUSY: 253 return LINUX_DID_BUS_BUSY; 254 case SCCMD_UNKNOWN: 255 default: 256 return LINUX_DID_ERROR; 257 } 258 } 259 260 261 262 #ifdef LINUX_SG_DEBUG 263 static void 264 dump_sg_io(struct linux_sg_io_hdr *lr) 265 { 266 printf("linuxreq [interface_id=%x, dxfer_direction=%d, cmd_len=%d, " 267 "mx_sb_len=%d, iovec_count=%d, dxfer_len=%d, dxferp=%p, " 268 "cmdp=%p, sbp=%p, timeout=%u, flags=%d, pack_id=%d, " 269 "usr_ptr=%p, status=%u, masked_status=%u, sb_len_wr=%u, " 270 "host_status=%u, driver_status=%u, resid=%d, duration=%u, " 271 "info=%u]\n", 272 lr->interface_id, lr->dxfer_direction, lr->cmd_len, 273 lr->mx_sb_len, lr->iovec_count, lr->dxfer_len, lr->dxferp, 274 lr->cmdp, lr->sbp, lr->timeout, lr->flags, lr->pack_id, 275 lr->usr_ptr, lr->status, lr->masked_status, lr->sb_len_wr, 276 lr->host_status, lr->driver_status, lr->resid, lr->duration, 277 lr->info); 278 } 279 280 static void 281 dump_scsireq(struct scsireq *br) 282 { 283 int i; 284 printf("bsdreq [flags=%lx, timeout=%lu, cmd=[ ", 285 br->flags, br->timeout); 286 for (i = 0; i < sizeof(br->cmd) / sizeof(br->cmd[0]); i++) 287 printf("%.2u ", br->cmd[i]); 288 printf("], cmdlen=%u, databuf=%p, datalen=%lu, datalen_used=%lu, " 289 "sense=[ ", 290 br->cmdlen, br->databuf, br->datalen, br->datalen_used); 291 for (i = 0; i < sizeof(br->sense) / sizeof(br->sense[0]); i++) 292 printf("%.2u ", br->sense[i]); 293 printf("], senselen=%u, senselen_used=%u, status=%u, retsts=%u, " 294 "error=%d]\n", 295 br->senselen, br->senselen_used, br->status, br->retsts, br->error); 296 } 297 #endif 298
Indexes created Tue Sep 30 10:09:55 GMT 2025