| 1 | /* $NetBSD: linux_sg.c,v 1.13 2008/03/21 21:54:58 ad 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 1.13 2008/03/21 21:54:58 ad 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, const struct linux_sys_ioctl_args *uap, |
| 73 | register_t *retval) |
| 74 | { |
| 75 | file_t *fp; |
| 76 | u_long com = SCARG(uap, com); |
| 77 | int error = 0; |
| 78 | int (*ioctlf)(file_t *, u_long, void *); |
| 79 | struct linux_sg_io_hdr lreq; |
| 80 | struct scsireq req; |
| 81 | |
| 82 | if ((fp = fd_getfile(SCARG(uap, fd))) == NULL) |
| 83 | return EBADF; |
| 84 | |
| 85 | ioctlf = fp->f_ops->fo_ioctl; |
| 86 | |
| 87 | *retval = 0; |
| 88 | DPRINTF(("Command = %lx\n" , com)); |
| 89 | switch (com) { |
| 90 | case LINUX_SG_GET_VERSION_NUM: { |
| 91 | error = copyout(&version, SCARG(uap, data), |
| 92 | sizeof(linux_sg_version)); |
| 93 | break; |
| 94 | } |
| 95 | case LINUX_SG_IO: |
| 96 | error = copyin(SCARG(uap, data), &lreq, sizeof(lreq)); |
| 97 | if (error) { |
| 98 | DPRINTF(("failed to copy in request data %d\n" , error)); |
| 99 | break; |
| 100 | } |
| 101 | |
| 102 | #ifdef LINUX_SG_DEBUG |
| 103 | dump_sg_io(&lreq); |
| 104 | #endif |
| 105 | (void)memset(&req, 0, sizeof(req)); |
| 106 | switch (lreq.dxfer_direction) { |
| 107 | case SG_DXFER_TO_DEV: |
| 108 | req.flags = SCCMD_WRITE; |
| 109 | break; |
| 110 | case SG_DXFER_FROM_DEV: |
| 111 | req.flags = SCCMD_READ; |
| 112 | break; |
| 113 | default: |
| 114 | DPRINTF(("unknown direction %d\n" , |
| 115 | lreq.dxfer_direction)); |
| 116 | error = EINVAL; |
| 117 | goto done; |
| 118 | } |
| 119 | if (lreq.iovec_count != 0) { |
| 120 | /* XXX: Not yet */ |
| 121 | error = EOPNOTSUPP; |
| 122 | DPRINTF(("scatter/gather not supported\n" )); |
| 123 | break; |
| 124 | } |
| 125 | |
| 126 | if (lreq.cmd_len > sizeof(req.cmd)) { |
| 127 | DPRINTF(("invalid command length %d\n" , lreq.cmd_len)); |
| 128 | error = EINVAL; |
| 129 | break; |
| 130 | } |
| 131 | |
| 132 | error = copyin(lreq.cmdp, req.cmd, lreq.cmd_len); |
| 133 | if (error) { |
| 134 | DPRINTF(("failed to copy in cmd data %d\n" , error)); |
| 135 | break; |
| 136 | } |
| 137 | |
| 138 | req.timeout = lreq.timeout; |
| 139 | req.cmdlen = lreq.cmd_len; |
| 140 | req.datalen = lreq.dxfer_len; |
| 141 | req.databuf = lreq.dxferp; |
| 142 | |
| 143 | error = ioctlf(fp, SCIOCCOMMAND, &req); |
| 144 | if (error) { |
| 145 | DPRINTF(("SCIOCCOMMAND failed %d\n" , error)); |
| 146 | break; |
| 147 | } |
| 148 | #ifdef LINUX_SG_DEBUG |
| 149 | dump_scsireq(&req); |
| 150 | #endif |
| 151 | if (req.senselen_used) { |
| 152 | if (req.senselen > lreq.mx_sb_len) |
| 153 | req.senselen = lreq.mx_sb_len; |
| 154 | lreq.sb_len_wr = req.senselen; |
| 155 | error = copyout(req.sense, lreq.sbp, req.senselen); |
| 156 | if (error) { |
| 157 | DPRINTF(("sense copyout failed %d\n" , error)); |
| 158 | break; |
| 159 | } |
| 160 | } else { |
| 161 | lreq.sb_len_wr = 0; |
| 162 | } |
| 163 | |
| 164 | lreq.status = req.status; |
| 165 | lreq.masked_status = 0; /* XXX */ |
| 166 | lreq.host_status = bsd_to_linux_host_status(req.retsts); |
| 167 | lreq.sb_len_wr = req.datalen_used; |
| 168 | lreq.driver_status = bsd_to_linux_driver_status(req.error); |
| 169 | lreq.resid = req.datalen - req.datalen_used; |
| 170 | lreq.duration = req.timeout; /* XXX */ |
| 171 | lreq.info = 0; /* XXX */ |
| 172 | error = copyout(&lreq, SCARG(uap, data), sizeof(lreq)); |
| 173 | if (error) { |
| 174 | DPRINTF(("failed to copy out req data %d\n" , error)); |
| 175 | } |
| 176 | break; |
| 177 | case LINUX_SG_EMULATED_HOST: |
| 178 | case LINUX_SG_SET_TRANSFORM: |
| 179 | case LINUX_SG_GET_TRANSFORM: |
| 180 | case LINUX_SG_GET_NUM_WAITING: |
| 181 | case LINUX_SG_SCSI_RESET: |
| 182 | case LINUX_SG_GET_REQUEST_TABLE: |
| 183 | case LINUX_SG_SET_KEEP_ORPHAN: |
| 184 | case LINUX_SG_GET_KEEP_ORPHAN: |
| 185 | case LINUX_SG_GET_ACCESS_COUNT: |
| 186 | case LINUX_SG_SET_FORCE_LOW_DMA: |
| 187 | case LINUX_SG_GET_LOW_DMA: |
| 188 | case LINUX_SG_GET_SG_TABLESIZE: |
| 189 | case LINUX_SG_GET_SCSI_ID: |
| 190 | case LINUX_SG_SET_FORCE_PACK_ID: |
| 191 | case LINUX_SG_GET_PACK_ID: |
| 192 | case LINUX_SG_SET_RESERVED_SIZE: |
| 193 | case LINUX_SG_GET_RESERVED_SIZE: |
| 194 | error = ENODEV; |
| 195 | break; |
| 196 | |
| 197 | /* version 2 interfaces */ |
| 198 | case LINUX_SG_SET_TIMEOUT: |
| 199 | break; |
| 200 | case LINUX_SG_GET_TIMEOUT: |
| 201 | /* ioctl returns value..., grr. */ |
| 202 | *retval = 60; |
| 203 | break; |
| 204 | case LINUX_SG_GET_COMMAND_Q: |
| 205 | case LINUX_SG_SET_COMMAND_Q: |
| 206 | case LINUX_SG_SET_DEBUG: |
| 207 | case LINUX_SG_NEXT_CMD_LEN: |
| 208 | error = ENODEV; |
| 209 | break; |
| 210 | } |
| 211 | |
| 212 | done: |
| 213 | fd_putfile(SCARG(uap, fd)); |
| 214 | |
| 215 | DPRINTF(("Return=%d\n" , error)); |
| 216 | return error; |
| 217 | } |
| 218 | |
| 219 | static int |
| 220 | bsd_to_linux_driver_status(int bs) |
| 221 | { |
| 222 | switch (bs) { |
| 223 | default: |
| 224 | case XS_NOERROR: |
| 225 | return 0; |
| 226 | case XS_SENSE: |
| 227 | case XS_SHORTSENSE: |
| 228 | return LINUX_DRIVER_SENSE; |
| 229 | case XS_RESOURCE_SHORTAGE: |
| 230 | return LINUX_DRIVER_SOFT; |
| 231 | case XS_DRIVER_STUFFUP: |
| 232 | return LINUX_DRIVER_ERROR; |
| 233 | case XS_SELTIMEOUT: |
| 234 | case XS_TIMEOUT: |
| 235 | return LINUX_DRIVER_TIMEOUT; |
| 236 | case XS_BUSY: |
| 237 | return LINUX_DRIVER_BUSY; |
| 238 | case XS_RESET: |
| 239 | return LINUX_SUGGEST_ABORT; |
| 240 | case XS_REQUEUE: |
| 241 | return LINUX_SUGGEST_RETRY; |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | static int |
| 246 | bsd_to_linux_host_status(int bs) |
| 247 | { |
| 248 | switch (bs) { |
| 249 | case SCCMD_OK: |
| 250 | case SCCMD_SENSE: |
| 251 | return LINUX_DID_OK; |
| 252 | case SCCMD_TIMEOUT: |
| 253 | return LINUX_DID_TIME_OUT; |
| 254 | case SCCMD_BUSY: |
| 255 | return LINUX_DID_BUS_BUSY; |
| 256 | case SCCMD_UNKNOWN: |
| 257 | default: |
| 258 | return LINUX_DID_ERROR; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | |
| 263 | |
| 264 | #ifdef LINUX_SG_DEBUG |
| 265 | static void |
| 266 | dump_sg_io(struct linux_sg_io_hdr *lr) |
| 267 | { |
| 268 | printf("linuxreq [interface_id=%x, dxfer_direction=%d, cmd_len=%d, " |
| 269 | "mx_sb_len=%d, iovec_count=%d, dxfer_len=%d, dxferp=%p, " |
| 270 | "cmdp=%p, sbp=%p, timeout=%u, flags=%d, pack_id=%d, " |
| 271 | "usr_ptr=%p, status=%u, masked_status=%u, sb_len_wr=%u, " |
| 272 | "host_status=%u, driver_status=%u, resid=%d, duration=%u, " |
| 273 | "info=%u]\n" , |
| 274 | lr->interface_id, lr->dxfer_direction, lr->cmd_len, |
| 275 | lr->mx_sb_len, lr->iovec_count, lr->dxfer_len, lr->dxferp, |
| 276 | lr->cmdp, lr->sbp, lr->timeout, lr->flags, lr->pack_id, |
| 277 | lr->usr_ptr, lr->status, lr->masked_status, lr->sb_len_wr, |
| 278 | lr->host_status, lr->driver_status, lr->resid, lr->duration, |
| 279 | lr->info); |
| 280 | } |
| 281 | |
| 282 | static void |
| 283 | dump_scsireq(struct scsireq *br) |
| 284 | { |
| 285 | int i; |
| 286 | printf("bsdreq [flags=%lx, timeout=%lu, cmd=[ " , |
| 287 | br->flags, br->timeout); |
| 288 | for (i = 0; i < sizeof(br->cmd) / sizeof(br->cmd[0]); i++) |
| 289 | printf("%.2u " , br->cmd[i]); |
| 290 | printf("], cmdlen=%u, databuf=%p, datalen=%lu, datalen_used=%lu, " |
| 291 | "sense=[ " , |
| 292 | br->cmdlen, br->databuf, br->datalen, br->datalen_used); |
| 293 | for (i = 0; i < sizeof(br->sense) / sizeof(br->sense[0]); i++) |
| 294 | printf("%.2u " , br->sense[i]); |
| 295 | printf("], senselen=%u, senselen_used=%u, status=%u, retsts=%u, " |
| 296 | "error=%d]\n" , |
| 297 | br->senselen, br->senselen_used, br->status, br->retsts, br->error); |
| 298 | } |
| 299 | #endif |
| 300 | |