Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/cam/cam_compat.c
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1 /*- 2 * CAM ioctl compatibility shims 3 * 4 * Copyright (c) 2013 Scott Long 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 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, 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 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD: releng/11.2/sys/cam/cam_compat.c 307264 2016-10-14 06:56:06Z mav $"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/types.h> 36 #include <sys/kernel.h> 37 #include <sys/conf.h> 38 #include <sys/fcntl.h> 39 40 #include <sys/lock.h> 41 #include <sys/mutex.h> 42 #include <sys/sysctl.h> 43 #include <sys/kthread.h> 44 45 #include <cam/cam.h> 46 #include <cam/cam_ccb.h> 47 #include <cam/cam_xpt.h> 48 #include <cam/cam_compat.h> 49 #include <cam/cam_periph.h> 50 51 #include <cam/scsi/scsi_pass.h> 52 53 #include "opt_cam.h" 54 55 static int cam_compat_handle_0x17(struct cdev *dev, u_long cmd, caddr_t addr, 56 int flag, struct thread *td, d_ioctl_t *cbfnp); 57 static int cam_compat_handle_0x18(struct cdev *dev, u_long cmd, caddr_t addr, 58 int flag, struct thread *td, d_ioctl_t *cbfnp); 59 static int cam_compat_translate_dev_match_0x18(union ccb *ccb); 60 61 int 62 cam_compat_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 63 struct thread *td, d_ioctl_t *cbfnp) 64 { 65 int error; 66 67 switch (cmd) { 68 case CAMIOCOMMAND_0x16: 69 { 70 struct ccb_hdr_0x17 *hdr17; 71 72 hdr17 = (struct ccb_hdr_0x17 *)addr; 73 if (hdr17->flags & CAM_SG_LIST_PHYS_0x16) { 74 hdr17->flags &= ~CAM_SG_LIST_PHYS_0x16; 75 hdr17->flags |= CAM_DATA_SG_PADDR; 76 } 77 if (hdr17->flags & CAM_DATA_PHYS_0x16) { 78 hdr17->flags &= ~CAM_DATA_PHYS_0x16; 79 hdr17->flags |= CAM_DATA_PADDR; 80 } 81 if (hdr17->flags & CAM_SCATTER_VALID_0x16) { 82 hdr17->flags &= CAM_SCATTER_VALID_0x16; 83 hdr17->flags |= CAM_DATA_SG; 84 } 85 cmd = CAMIOCOMMAND; 86 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp); 87 break; 88 } 89 case CAMGETPASSTHRU_0x16: 90 cmd = CAMGETPASSTHRU; 91 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp); 92 break; 93 case CAMIOCOMMAND_0x17: 94 cmd = CAMIOCOMMAND; 95 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp); 96 break; 97 case CAMGETPASSTHRU_0x17: 98 cmd = CAMGETPASSTHRU; 99 error = cam_compat_handle_0x17(dev, cmd, addr, flag, td, cbfnp); 100 break; 101 case CAMIOCOMMAND_0x18: 102 cmd = CAMIOCOMMAND; 103 error = cam_compat_handle_0x18(dev, cmd, addr, flag, td, cbfnp); 104 break; 105 case CAMGETPASSTHRU_0x18: 106 cmd = CAMGETPASSTHRU; 107 error = cam_compat_handle_0x18(dev, cmd, addr, flag, td, cbfnp); 108 break; 109 default: 110 error = ENOTTY; 111 } 112 113 return (error); 114 } 115 116 static int 117 cam_compat_handle_0x17(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 118 struct thread *td, d_ioctl_t *cbfnp) 119 { 120 union ccb *ccb; 121 struct ccb_hdr *hdr; 122 struct ccb_hdr_0x17 *hdr17; 123 uint8_t *ccbb, *ccbb17; 124 u_int error; 125 126 hdr17 = (struct ccb_hdr_0x17 *)addr; 127 ccb = xpt_alloc_ccb(); 128 hdr = &ccb->ccb_h; 129 130 hdr->pinfo = hdr17->pinfo; 131 hdr->xpt_links = hdr17->xpt_links; 132 hdr->sim_links = hdr17->sim_links; 133 hdr->periph_links = hdr17->periph_links; 134 hdr->retry_count = hdr17->retry_count; 135 hdr->cbfcnp = hdr17->cbfcnp; 136 hdr->func_code = hdr17->func_code; 137 hdr->status = hdr17->status; 138 hdr->path = hdr17->path; 139 hdr->path_id = hdr17->path_id; 140 hdr->target_id = hdr17->target_id; 141 hdr->target_lun = hdr17->target_lun; 142 hdr->flags = hdr17->flags; 143 hdr->xflags = 0; 144 hdr->periph_priv = hdr17->periph_priv; 145 hdr->sim_priv = hdr17->sim_priv; 146 hdr->timeout = hdr17->timeout; 147 hdr->softtimeout.tv_sec = 0; 148 hdr->softtimeout.tv_usec = 0; 149 150 ccbb = (uint8_t *)&hdr[1]; 151 ccbb17 = (uint8_t *)&hdr17[1]; 152 if (ccb->ccb_h.func_code == XPT_SET_TRAN_SETTINGS) { 153 struct ccb_trans_settings *cts; 154 struct ccb_trans_settings_0x17 *cts17; 155 156 cts = &ccb->cts; 157 cts17 = (struct ccb_trans_settings_0x17 *)hdr17; 158 cts->type = cts17->type; 159 cts->protocol = cts17->protocol; 160 cts->protocol_version = cts17->protocol_version; 161 cts->transport = cts17->transport; 162 cts->transport_version = cts17->transport_version; 163 bcopy(&cts17->proto_specific, &cts->proto_specific, 164 sizeof(cts17->proto_specific)); 165 bcopy(&cts17->xport_specific, &cts->xport_specific, 166 sizeof(cts17->xport_specific)); 167 } else { 168 bcopy(ccbb17, ccbb, CAM_0X17_DATA_LEN); 169 } 170 171 error = (cbfnp)(dev, cmd, (caddr_t)ccb, flag, td); 172 173 hdr17->pinfo = hdr->pinfo; 174 hdr17->xpt_links = hdr->xpt_links; 175 hdr17->sim_links = hdr->sim_links; 176 hdr17->periph_links = hdr->periph_links; 177 hdr17->retry_count = hdr->retry_count; 178 hdr17->cbfcnp = hdr->cbfcnp; 179 hdr17->func_code = hdr->func_code; 180 hdr17->status = hdr->status; 181 hdr17->path = hdr->path; 182 hdr17->path_id = hdr->path_id; 183 hdr17->target_id = hdr->target_id; 184 hdr17->target_lun = hdr->target_lun; 185 hdr17->flags = hdr->flags; 186 hdr17->periph_priv = hdr->periph_priv; 187 hdr17->sim_priv = hdr->sim_priv; 188 hdr17->timeout = hdr->timeout; 189 190 if (ccb->ccb_h.func_code == XPT_PATH_INQ) { 191 struct ccb_pathinq *cpi; 192 struct ccb_pathinq_0x17 *cpi17; 193 194 /* The PATH_INQ only needs special handling on the way out */ 195 cpi = &ccb->cpi; 196 cpi17 = (struct ccb_pathinq_0x17 *)hdr17; 197 cpi17->version_num = cpi->version_num; 198 cpi17->hba_inquiry = cpi->hba_inquiry; 199 cpi17->target_sprt = (u_int8_t)cpi->target_sprt; 200 cpi17->hba_misc = (u_int8_t)cpi->hba_misc; 201 cpi17->hba_eng_cnt = cpi->hba_eng_cnt; 202 bcopy(&cpi->vuhba_flags[0], &cpi17->vuhba_flags[0], VUHBALEN); 203 cpi17->max_target = cpi->max_target; 204 cpi17->max_lun = cpi->max_lun; 205 cpi17->async_flags = cpi->async_flags; 206 cpi17->hpath_id = cpi->hpath_id; 207 cpi17->initiator_id = cpi->initiator_id; 208 bcopy(&cpi->sim_vid[0], &cpi17->sim_vid[0], SIM_IDLEN); 209 bcopy(&cpi->hba_vid[0], &cpi17->hba_vid[0], HBA_IDLEN); 210 bcopy(&cpi->dev_name[0], &cpi17->dev_name[0], DEV_IDLEN); 211 cpi17->unit_number = cpi->unit_number; 212 cpi17->bus_id = cpi->bus_id; 213 cpi17->base_transfer_speed = cpi->base_transfer_speed; 214 cpi17->protocol = cpi->protocol; 215 cpi17->protocol_version = cpi->protocol_version; 216 cpi17->transport = cpi->transport; 217 cpi17->transport_version = cpi->transport_version; 218 bcopy(&cpi->xport_specific, &cpi17->xport_specific, 219 PATHINQ_SETTINGS_SIZE); 220 cpi17->maxio = cpi->maxio; 221 cpi17->hba_vendor = cpi->hba_vendor; 222 cpi17->hba_device = cpi->hba_device; 223 cpi17->hba_subvendor = cpi->hba_subvendor; 224 cpi17->hba_subdevice = cpi->hba_subdevice; 225 } else if (ccb->ccb_h.func_code == XPT_GET_TRAN_SETTINGS) { 226 struct ccb_trans_settings *cts; 227 struct ccb_trans_settings_0x17 *cts17; 228 229 cts = &ccb->cts; 230 cts17 = (struct ccb_trans_settings_0x17 *)hdr17; 231 cts17->type = cts->type; 232 cts17->protocol = cts->protocol; 233 cts17->protocol_version = cts->protocol_version; 234 cts17->transport = cts->transport; 235 cts17->transport_version = cts->transport_version; 236 bcopy(&cts->proto_specific, &cts17->proto_specific, 237 sizeof(cts17->proto_specific)); 238 bcopy(&cts->xport_specific, &cts17->xport_specific, 239 sizeof(cts17->xport_specific)); 240 } else if (ccb->ccb_h.func_code == XPT_DEV_MATCH) { 241 /* Copy the rest of the header over */ 242 bcopy(ccbb, ccbb17, CAM_0X17_DATA_LEN); 243 244 cam_compat_translate_dev_match_0x18(ccb); 245 } else { 246 bcopy(ccbb, ccbb17, CAM_0X17_DATA_LEN); 247 } 248 249 xpt_free_ccb(ccb); 250 251 return (error); 252 } 253 254 static int 255 cam_compat_handle_0x18(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 256 struct thread *td, d_ioctl_t *cbfnp) 257 { 258 union ccb *ccb; 259 struct ccb_hdr *hdr; 260 struct ccb_hdr_0x18 *hdr18; 261 uint8_t *ccbb, *ccbb18; 262 u_int error; 263 264 hdr18 = (struct ccb_hdr_0x18 *)addr; 265 ccb = xpt_alloc_ccb(); 266 hdr = &ccb->ccb_h; 267 268 hdr->pinfo = hdr18->pinfo; 269 hdr->xpt_links = hdr18->xpt_links; 270 hdr->sim_links = hdr18->sim_links; 271 hdr->periph_links = hdr18->periph_links; 272 hdr->retry_count = hdr18->retry_count; 273 hdr->cbfcnp = hdr18->cbfcnp; 274 hdr->func_code = hdr18->func_code; 275 hdr->status = hdr18->status; 276 hdr->path = hdr18->path; 277 hdr->path_id = hdr18->path_id; 278 hdr->target_id = hdr18->target_id; 279 hdr->target_lun = hdr18->target_lun; 280 if (hdr18->xflags & CAM_EXTLUN_VALID_0x18) 281 hdr->target_lun = hdr18->ext_lun; 282 hdr->flags = hdr18->flags; 283 hdr->xflags = hdr18->xflags; 284 hdr->periph_priv = hdr18->periph_priv; 285 hdr->sim_priv = hdr18->sim_priv; 286 hdr->timeout = hdr18->timeout; 287 hdr->softtimeout.tv_sec = 0; 288 hdr->softtimeout.tv_usec = 0; 289 290 ccbb = (uint8_t *)&hdr[1]; 291 ccbb18 = (uint8_t *)&hdr18[1]; 292 if (ccb->ccb_h.func_code == XPT_SET_TRAN_SETTINGS) { 293 struct ccb_trans_settings *cts; 294 struct ccb_trans_settings_0x18 *cts18; 295 296 cts = &ccb->cts; 297 cts18 = (struct ccb_trans_settings_0x18 *)hdr18; 298 cts->type = cts18->type; 299 cts->protocol = cts18->protocol; 300 cts->protocol_version = cts18->protocol_version; 301 cts->transport = cts18->transport; 302 cts->transport_version = cts18->transport_version; 303 bcopy(&cts18->proto_specific, &cts->proto_specific, 304 sizeof(cts18->proto_specific)); 305 bcopy(&cts18->xport_specific, &cts->xport_specific, 306 sizeof(cts18->xport_specific)); 307 } else { 308 bcopy(ccbb18, ccbb, CAM_0X18_DATA_LEN); 309 } 310 311 error = (cbfnp)(dev, cmd, (caddr_t)ccb, flag, td); 312 313 hdr18->pinfo = hdr->pinfo; 314 hdr18->xpt_links = hdr->xpt_links; 315 hdr18->sim_links = hdr->sim_links; 316 hdr18->periph_links = hdr->periph_links; 317 hdr18->retry_count = hdr->retry_count; 318 hdr18->cbfcnp = hdr->cbfcnp; 319 hdr18->func_code = hdr->func_code; 320 hdr18->status = hdr->status; 321 hdr18->path = hdr->path; 322 hdr18->path_id = hdr->path_id; 323 hdr18->target_id = hdr->target_id; 324 hdr18->target_lun = hdr->target_lun; 325 hdr18->ext_lun = hdr->target_lun; 326 hdr18->flags = hdr->flags; 327 hdr18->xflags = hdr->xflags | CAM_EXTLUN_VALID_0x18; 328 hdr18->periph_priv = hdr->periph_priv; 329 hdr18->sim_priv = hdr->sim_priv; 330 hdr18->timeout = hdr->timeout; 331 332 if (ccb->ccb_h.func_code == XPT_GET_TRAN_SETTINGS) { 333 struct ccb_trans_settings *cts; 334 struct ccb_trans_settings_0x18 *cts18; 335 336 cts = &ccb->cts; 337 cts18 = (struct ccb_trans_settings_0x18 *)hdr18; 338 cts18->type = cts->type; 339 cts18->protocol = cts->protocol; 340 cts18->protocol_version = cts->protocol_version; 341 cts18->transport = cts->transport; 342 cts18->transport_version = cts->transport_version; 343 bcopy(&cts->proto_specific, &cts18->proto_specific, 344 sizeof(cts18->proto_specific)); 345 bcopy(&cts->xport_specific, &cts18->xport_specific, 346 sizeof(cts18->xport_specific)); 347 } else if (ccb->ccb_h.func_code == XPT_DEV_MATCH) { 348 bcopy(ccbb, ccbb18, CAM_0X18_DATA_LEN); 349 cam_compat_translate_dev_match_0x18(ccb); 350 } else { 351 bcopy(ccbb, ccbb18, CAM_0X18_DATA_LEN); 352 } 353 354 xpt_free_ccb(ccb); 355 356 return (error); 357 } 358 359 static int 360 cam_compat_translate_dev_match_0x18(union ccb *ccb) 361 { 362 struct dev_match_result *dm; 363 struct dev_match_result_0x18 *dm18; 364 struct cam_periph_map_info mapinfo; 365 int i; 366 367 /* Remap the CCB into kernel address space */ 368 bzero(&mapinfo, sizeof(mapinfo)); 369 cam_periph_mapmem(ccb, &mapinfo, MAXPHYS); 370 371 dm = ccb->cdm.matches; 372 /* Translate in-place: old fields are smaller */ 373 dm18 = (struct dev_match_result_0x18 *)(dm); 374 375 for (i = 0; i < ccb->cdm.num_matches; i++) { 376 dm18[i].type = dm[i].type; 377 switch (dm[i].type) { 378 case DEV_MATCH_PERIPH: 379 memcpy(&dm18[i].result.periph_result.periph_name, 380 &dm[i].result.periph_result.periph_name, 381 DEV_IDLEN); 382 dm18[i].result.periph_result.unit_number = 383 dm[i].result.periph_result.unit_number; 384 dm18[i].result.periph_result.path_id = 385 dm[i].result.periph_result.path_id; 386 dm18[i].result.periph_result.target_id = 387 dm[i].result.periph_result.target_id; 388 dm18[i].result.periph_result.target_lun = 389 dm[i].result.periph_result.target_lun; 390 break; 391 case DEV_MATCH_DEVICE: 392 dm18[i].result.device_result.path_id = 393 dm[i].result.device_result.path_id; 394 dm18[i].result.device_result.target_id = 395 dm[i].result.device_result.target_id; 396 dm18[i].result.device_result.target_lun = 397 dm[i].result.device_result.target_lun; 398 dm18[i].result.device_result.protocol = 399 dm[i].result.device_result.protocol; 400 memcpy(&dm18[i].result.device_result.inq_data, 401 &dm[i].result.device_result.inq_data, 402 sizeof(struct scsi_inquiry_data)); 403 memcpy(&dm18[i].result.device_result.ident_data, 404 &dm[i].result.device_result.ident_data, 405 sizeof(struct ata_params)); 406 dm18[i].result.device_result.flags = 407 dm[i].result.device_result.flags; 408 break; 409 case DEV_MATCH_BUS: 410 memcpy(&dm18[i].result.bus_result, 411 &dm[i].result.bus_result, 412 sizeof(struct bus_match_result)); 413 break; 414 } 415 } 416 417 cam_periph_unmapmem(ccb, &mapinfo); 418 419 return (0); 420 } 421
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