ctl_backend_ramdisk.c revision 275474
1229997Sken/*- 2229997Sken * Copyright (c) 2003, 2008 Silicon Graphics International Corp. 3232604Strasz * Copyright (c) 2012 The FreeBSD Foundation 4229997Sken * All rights reserved. 5229997Sken * 6232604Strasz * Portions of this software were developed by Edward Tomasz Napierala 7232604Strasz * under sponsorship from the FreeBSD Foundation. 8232604Strasz * 9229997Sken * Redistribution and use in source and binary forms, with or without 10229997Sken * modification, are permitted provided that the following conditions 11229997Sken * are met: 12229997Sken * 1. Redistributions of source code must retain the above copyright 13229997Sken * notice, this list of conditions, and the following disclaimer, 14229997Sken * without modification. 15229997Sken * 2. Redistributions in binary form must reproduce at minimum a disclaimer 16229997Sken * substantially similar to the "NO WARRANTY" disclaimer below 17229997Sken * ("Disclaimer") and any redistribution must be conditioned upon 18229997Sken * including a substantially similar Disclaimer requirement for further 19229997Sken * binary redistribution. 20229997Sken * 21229997Sken * NO WARRANTY 22229997Sken * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23229997Sken * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24229997Sken * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 25229997Sken * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26229997Sken * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27229997Sken * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28229997Sken * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29229997Sken * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30229997Sken * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 31229997Sken * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32229997Sken * POSSIBILITY OF SUCH DAMAGES. 33229997Sken * 34229997Sken * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_backend_ramdisk.c#3 $ 35229997Sken */ 36229997Sken/* 37229997Sken * CAM Target Layer backend for a "fake" ramdisk. 38229997Sken * 39229997Sken * Author: Ken Merry <ken@FreeBSD.org> 40229997Sken */ 41229997Sken 42229997Sken#include <sys/cdefs.h> 43229997Sken__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl_backend_ramdisk.c 275474 2014-12-04 11:34:19Z mav $"); 44229997Sken 45229997Sken#include <sys/param.h> 46229997Sken#include <sys/systm.h> 47229997Sken#include <sys/kernel.h> 48229997Sken#include <sys/condvar.h> 49229997Sken#include <sys/types.h> 50229997Sken#include <sys/lock.h> 51229997Sken#include <sys/mutex.h> 52229997Sken#include <sys/malloc.h> 53264886Smav#include <sys/taskqueue.h> 54229997Sken#include <sys/time.h> 55229997Sken#include <sys/queue.h> 56229997Sken#include <sys/conf.h> 57229997Sken#include <sys/ioccom.h> 58229997Sken#include <sys/module.h> 59229997Sken 60229997Sken#include <cam/scsi/scsi_all.h> 61229997Sken#include <cam/ctl/ctl_io.h> 62229997Sken#include <cam/ctl/ctl.h> 63229997Sken#include <cam/ctl/ctl_util.h> 64229997Sken#include <cam/ctl/ctl_backend.h> 65229997Sken#include <cam/ctl/ctl_frontend_internal.h> 66229997Sken#include <cam/ctl/ctl_debug.h> 67229997Sken#include <cam/ctl/ctl_ioctl.h> 68229997Sken#include <cam/ctl/ctl_error.h> 69229997Sken 70229997Skentypedef enum { 71229997Sken CTL_BE_RAMDISK_LUN_UNCONFIGURED = 0x01, 72229997Sken CTL_BE_RAMDISK_LUN_CONFIG_ERR = 0x02, 73229997Sken CTL_BE_RAMDISK_LUN_WAITING = 0x04 74229997Sken} ctl_be_ramdisk_lun_flags; 75229997Sken 76229997Skenstruct ctl_be_ramdisk_lun { 77264886Smav char lunname[32]; 78229997Sken uint64_t size_bytes; 79229997Sken uint64_t size_blocks; 80229997Sken struct ctl_be_ramdisk_softc *softc; 81229997Sken ctl_be_ramdisk_lun_flags flags; 82229997Sken STAILQ_ENTRY(ctl_be_ramdisk_lun) links; 83229997Sken struct ctl_be_lun ctl_be_lun; 84264886Smav struct taskqueue *io_taskqueue; 85264886Smav struct task io_task; 86264886Smav STAILQ_HEAD(, ctl_io_hdr) cont_queue; 87267877Smav struct mtx_padalign queue_lock; 88229997Sken}; 89229997Sken 90229997Skenstruct ctl_be_ramdisk_softc { 91229997Sken struct mtx lock; 92229997Sken int rd_size; 93229997Sken#ifdef CTL_RAMDISK_PAGES 94229997Sken uint8_t **ramdisk_pages; 95229997Sken int num_pages; 96229997Sken#else 97229997Sken uint8_t *ramdisk_buffer; 98229997Sken#endif 99229997Sken int num_luns; 100229997Sken STAILQ_HEAD(, ctl_be_ramdisk_lun) lun_list; 101229997Sken}; 102229997Sken 103229997Skenstatic struct ctl_be_ramdisk_softc rd_softc; 104229997Sken 105229997Skenint ctl_backend_ramdisk_init(void); 106229997Skenvoid ctl_backend_ramdisk_shutdown(void); 107229997Skenstatic int ctl_backend_ramdisk_move_done(union ctl_io *io); 108229997Skenstatic int ctl_backend_ramdisk_submit(union ctl_io *io); 109264886Smavstatic void ctl_backend_ramdisk_continue(union ctl_io *io); 110229997Skenstatic int ctl_backend_ramdisk_ioctl(struct cdev *dev, u_long cmd, 111229997Sken caddr_t addr, int flag, struct thread *td); 112229997Skenstatic int ctl_backend_ramdisk_rm(struct ctl_be_ramdisk_softc *softc, 113229997Sken struct ctl_lun_req *req); 114229997Skenstatic int ctl_backend_ramdisk_create(struct ctl_be_ramdisk_softc *softc, 115229997Sken struct ctl_lun_req *req, int do_wait); 116232604Straszstatic int ctl_backend_ramdisk_modify(struct ctl_be_ramdisk_softc *softc, 117232604Strasz struct ctl_lun_req *req); 118264886Smavstatic void ctl_backend_ramdisk_worker(void *context, int pending); 119229997Skenstatic void ctl_backend_ramdisk_lun_shutdown(void *be_lun); 120229997Skenstatic void ctl_backend_ramdisk_lun_config_status(void *be_lun, 121229997Sken ctl_lun_config_status status); 122229997Skenstatic int ctl_backend_ramdisk_config_write(union ctl_io *io); 123229997Skenstatic int ctl_backend_ramdisk_config_read(union ctl_io *io); 124229997Sken 125229997Skenstatic struct ctl_backend_driver ctl_be_ramdisk_driver = 126229997Sken{ 127230334Sken .name = "ramdisk", 128230334Sken .flags = CTL_BE_FLAG_HAS_CONFIG, 129230334Sken .init = ctl_backend_ramdisk_init, 130230334Sken .data_submit = ctl_backend_ramdisk_submit, 131230334Sken .data_move_done = ctl_backend_ramdisk_move_done, 132230334Sken .config_read = ctl_backend_ramdisk_config_read, 133230334Sken .config_write = ctl_backend_ramdisk_config_write, 134230334Sken .ioctl = ctl_backend_ramdisk_ioctl 135229997Sken}; 136229997Sken 137229997SkenMALLOC_DEFINE(M_RAMDISK, "ramdisk", "Memory used for CTL RAMdisk"); 138229997SkenCTL_BACKEND_DECLARE(cbr, ctl_be_ramdisk_driver); 139229997Sken 140229997Skenint 141229997Skenctl_backend_ramdisk_init(void) 142229997Sken{ 143229997Sken struct ctl_be_ramdisk_softc *softc; 144229997Sken#ifdef CTL_RAMDISK_PAGES 145240993Strasz int i; 146229997Sken#endif 147229997Sken 148229997Sken 149229997Sken softc = &rd_softc; 150229997Sken 151229997Sken memset(softc, 0, sizeof(*softc)); 152229997Sken 153267877Smav mtx_init(&softc->lock, "ctlramdisk", NULL, MTX_DEF); 154229997Sken 155229997Sken STAILQ_INIT(&softc->lun_list); 156264886Smav softc->rd_size = 1024 * 1024; 157229997Sken#ifdef CTL_RAMDISK_PAGES 158229997Sken softc->num_pages = softc->rd_size / PAGE_SIZE; 159229997Sken softc->ramdisk_pages = (uint8_t **)malloc(sizeof(uint8_t *) * 160229997Sken softc->num_pages, M_RAMDISK, 161229997Sken M_WAITOK); 162240993Strasz for (i = 0; i < softc->num_pages; i++) 163229997Sken softc->ramdisk_pages[i] = malloc(PAGE_SIZE, M_RAMDISK,M_WAITOK); 164229997Sken#else 165229997Sken softc->ramdisk_buffer = (uint8_t *)malloc(softc->rd_size, M_RAMDISK, 166229997Sken M_WAITOK); 167229997Sken#endif 168229997Sken 169229997Sken return (0); 170229997Sken} 171229997Sken 172229997Skenvoid 173229997Skenctl_backend_ramdisk_shutdown(void) 174229997Sken{ 175229997Sken struct ctl_be_ramdisk_softc *softc; 176229997Sken struct ctl_be_ramdisk_lun *lun, *next_lun; 177229997Sken#ifdef CTL_RAMDISK_PAGES 178229997Sken int i; 179229997Sken#endif 180229997Sken 181229997Sken softc = &rd_softc; 182229997Sken 183229997Sken mtx_lock(&softc->lock); 184229997Sken for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 185229997Sken /* 186229997Sken * Grab the next LUN. The current LUN may get removed by 187229997Sken * ctl_invalidate_lun(), which will call our LUN shutdown 188229997Sken * routine, if there is no outstanding I/O for this LUN. 189229997Sken */ 190229997Sken next_lun = STAILQ_NEXT(lun, links); 191229997Sken 192229997Sken /* 193229997Sken * Drop our lock here. Since ctl_invalidate_lun() can call 194229997Sken * back into us, this could potentially lead to a recursive 195229997Sken * lock of the same mutex, which would cause a hang. 196229997Sken */ 197229997Sken mtx_unlock(&softc->lock); 198229997Sken ctl_disable_lun(&lun->ctl_be_lun); 199229997Sken ctl_invalidate_lun(&lun->ctl_be_lun); 200229997Sken mtx_lock(&softc->lock); 201229997Sken } 202229997Sken mtx_unlock(&softc->lock); 203229997Sken 204229997Sken#ifdef CTL_RAMDISK_PAGES 205229997Sken for (i = 0; i < softc->num_pages; i++) 206229997Sken free(softc->ramdisk_pages[i], M_RAMDISK); 207229997Sken 208229997Sken free(softc->ramdisk_pages, M_RAMDISK); 209229997Sken#else 210229997Sken free(softc->ramdisk_buffer, M_RAMDISK); 211229997Sken#endif 212229997Sken 213229997Sken if (ctl_backend_deregister(&ctl_be_ramdisk_driver) != 0) { 214229997Sken printf("ctl_backend_ramdisk_shutdown: " 215229997Sken "ctl_backend_deregister() failed!\n"); 216229997Sken } 217229997Sken} 218229997Sken 219229997Skenstatic int 220229997Skenctl_backend_ramdisk_move_done(union ctl_io *io) 221229997Sken{ 222264886Smav struct ctl_be_lun *ctl_be_lun; 223264886Smav struct ctl_be_ramdisk_lun *be_lun; 224229997Sken#ifdef CTL_TIME_IO 225229997Sken struct bintime cur_bt; 226229997Sken#endif 227229997Sken 228229997Sken CTL_DEBUG_PRINT(("ctl_backend_ramdisk_move_done\n")); 229264886Smav ctl_be_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 230264886Smav CTL_PRIV_BACKEND_LUN].ptr; 231264886Smav be_lun = (struct ctl_be_ramdisk_lun *)ctl_be_lun->be_lun; 232264886Smav#ifdef CTL_TIME_IO 233264886Smav getbintime(&cur_bt); 234264886Smav bintime_sub(&cur_bt, &io->io_hdr.dma_start_bt); 235264886Smav bintime_add(&io->io_hdr.dma_bt, &cur_bt); 236264886Smav io->io_hdr.num_dmas++; 237264886Smav#endif 238264886Smav if (io->scsiio.kern_sg_entries > 0) 239264886Smav free(io->scsiio.kern_data_ptr, M_RAMDISK); 240264886Smav io->scsiio.kern_rel_offset += io->scsiio.kern_data_len; 241275058Smav if (io->io_hdr.flags & CTL_FLAG_ABORT) { 242275058Smav ; 243275058Smav } else if ((io->io_hdr.port_status == 0) && 244275058Smav ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) { 245267519Smav if (io->io_hdr.ctl_private[CTL_PRIV_BACKEND].integer > 0) { 246267877Smav mtx_lock(&be_lun->queue_lock); 247264886Smav STAILQ_INSERT_TAIL(&be_lun->cont_queue, 248264886Smav &io->io_hdr, links); 249267877Smav mtx_unlock(&be_lun->queue_lock); 250264886Smav taskqueue_enqueue(be_lun->io_taskqueue, 251264886Smav &be_lun->io_task); 252264886Smav return (0); 253264886Smav } 254275009Smav ctl_set_success(&io->scsiio); 255275058Smav } else if ((io->io_hdr.port_status != 0) && 256275058Smav ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 257275058Smav (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 258229997Sken /* 259229997Sken * For hardware error sense keys, the sense key 260229997Sken * specific value is defined to be a retry count, 261229997Sken * but we use it to pass back an internal FETD 262229997Sken * error code. XXX KDM Hopefully the FETD is only 263229997Sken * using 16 bits for an error code, since that's 264229997Sken * all the space we have in the sks field. 265229997Sken */ 266229997Sken ctl_set_internal_failure(&io->scsiio, 267229997Sken /*sks_valid*/ 1, 268229997Sken /*retry_count*/ 269229997Sken io->io_hdr.port_status); 270229997Sken } 271267537Smav ctl_data_submit_done(io); 272229997Sken return(0); 273229997Sken} 274229997Sken 275229997Skenstatic int 276229997Skenctl_backend_ramdisk_submit(union ctl_io *io) 277229997Sken{ 278267519Smav struct ctl_be_lun *ctl_be_lun; 279267537Smav struct ctl_lba_len_flags *lbalen; 280229997Sken 281267519Smav ctl_be_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 282267519Smav CTL_PRIV_BACKEND_LUN].ptr; 283267537Smav lbalen = (struct ctl_lba_len_flags *)&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 284267537Smav if (lbalen->flags & CTL_LLF_VERIFY) { 285267537Smav ctl_set_success(&io->scsiio); 286267537Smav ctl_data_submit_done(io); 287267537Smav return (CTL_RETVAL_COMPLETE); 288267537Smav } 289267519Smav io->io_hdr.ctl_private[CTL_PRIV_BACKEND].integer = 290267519Smav lbalen->len * ctl_be_lun->blocksize; 291264886Smav ctl_backend_ramdisk_continue(io); 292264886Smav return (CTL_RETVAL_COMPLETE); 293264886Smav} 294229997Sken 295264886Smavstatic void 296264886Smavctl_backend_ramdisk_continue(union ctl_io *io) 297264886Smav{ 298264886Smav struct ctl_be_ramdisk_softc *softc; 299264886Smav int len, len_filled, sg_filled; 300264886Smav#ifdef CTL_RAMDISK_PAGES 301264886Smav struct ctl_sg_entry *sg_entries; 302264886Smav int i; 303264886Smav#endif 304229997Sken 305264886Smav softc = &rd_softc; 306267519Smav len = io->io_hdr.ctl_private[CTL_PRIV_BACKEND].integer; 307229997Sken#ifdef CTL_RAMDISK_PAGES 308264886Smav sg_filled = min(btoc(len), softc->num_pages); 309264886Smav if (sg_filled > 1) { 310229997Sken io->scsiio.kern_data_ptr = malloc(sizeof(struct ctl_sg_entry) * 311264886Smav sg_filled, M_RAMDISK, 312229997Sken M_WAITOK); 313229997Sken sg_entries = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 314264886Smav for (i = 0, len_filled = 0; i < sg_filled; i++) { 315229997Sken sg_entries[i].addr = softc->ramdisk_pages[i]; 316229997Sken sg_entries[i].len = ctl_min(PAGE_SIZE, 317229997Sken len - len_filled); 318264886Smav len_filled += sg_entries[i].len; 319229997Sken } 320264886Smav io->io_hdr.flags |= CTL_FLAG_KDPTR_SGLIST; 321229997Sken } else { 322264886Smav sg_filled = 0; 323264886Smav len_filled = len; 324229997Sken io->scsiio.kern_data_ptr = softc->ramdisk_pages[0]; 325264886Smav } 326229997Sken#else 327264886Smav sg_filled = 0; 328264886Smav len_filled = min(len, softc->rd_size); 329264886Smav io->scsiio.kern_data_ptr = softc->ramdisk_buffer; 330264886Smav#endif /* CTL_RAMDISK_PAGES */ 331229997Sken 332267514Smav io->scsiio.be_move_done = ctl_backend_ramdisk_move_done; 333267514Smav io->scsiio.kern_data_resid = 0; 334264886Smav io->scsiio.kern_data_len = len_filled; 335264886Smav io->scsiio.kern_sg_entries = sg_filled; 336264886Smav io->io_hdr.flags |= CTL_FLAG_ALLOCATED; 337267519Smav io->io_hdr.ctl_private[CTL_PRIV_BACKEND].integer -= len_filled; 338229997Sken#ifdef CTL_TIME_IO 339229997Sken getbintime(&io->io_hdr.dma_start_bt); 340229997Sken#endif 341229997Sken ctl_datamove(io); 342264886Smav} 343229997Sken 344264886Smavstatic void 345264886Smavctl_backend_ramdisk_worker(void *context, int pending) 346264886Smav{ 347264886Smav struct ctl_be_ramdisk_softc *softc; 348264886Smav struct ctl_be_ramdisk_lun *be_lun; 349264886Smav union ctl_io *io; 350264886Smav 351264886Smav be_lun = (struct ctl_be_ramdisk_lun *)context; 352264886Smav softc = be_lun->softc; 353264886Smav 354267877Smav mtx_lock(&be_lun->queue_lock); 355264886Smav for (;;) { 356264886Smav io = (union ctl_io *)STAILQ_FIRST(&be_lun->cont_queue); 357264886Smav if (io != NULL) { 358264886Smav STAILQ_REMOVE(&be_lun->cont_queue, &io->io_hdr, 359264886Smav ctl_io_hdr, links); 360264886Smav 361267877Smav mtx_unlock(&be_lun->queue_lock); 362264886Smav 363264886Smav ctl_backend_ramdisk_continue(io); 364264886Smav 365267877Smav mtx_lock(&be_lun->queue_lock); 366264886Smav continue; 367264886Smav } 368264886Smav 369264886Smav /* 370264886Smav * If we get here, there is no work left in the queues, so 371264886Smav * just break out and let the task queue go to sleep. 372264886Smav */ 373264886Smav break; 374264886Smav } 375267877Smav mtx_unlock(&be_lun->queue_lock); 376229997Sken} 377229997Sken 378229997Skenstatic int 379229997Skenctl_backend_ramdisk_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 380229997Sken int flag, struct thread *td) 381229997Sken{ 382229997Sken struct ctl_be_ramdisk_softc *softc; 383229997Sken int retval; 384229997Sken 385229997Sken retval = 0; 386229997Sken softc = &rd_softc; 387229997Sken 388229997Sken switch (cmd) { 389229997Sken case CTL_LUN_REQ: { 390229997Sken struct ctl_lun_req *lun_req; 391229997Sken 392229997Sken lun_req = (struct ctl_lun_req *)addr; 393229997Sken 394229997Sken switch (lun_req->reqtype) { 395229997Sken case CTL_LUNREQ_CREATE: 396229997Sken retval = ctl_backend_ramdisk_create(softc, lun_req, 397229997Sken /*do_wait*/ 1); 398229997Sken break; 399229997Sken case CTL_LUNREQ_RM: 400229997Sken retval = ctl_backend_ramdisk_rm(softc, lun_req); 401229997Sken break; 402232604Strasz case CTL_LUNREQ_MODIFY: 403232604Strasz retval = ctl_backend_ramdisk_modify(softc, lun_req); 404232604Strasz break; 405229997Sken default: 406229997Sken lun_req->status = CTL_LUN_ERROR; 407229997Sken snprintf(lun_req->error_str, sizeof(lun_req->error_str), 408229997Sken "%s: invalid LUN request type %d", __func__, 409229997Sken lun_req->reqtype); 410229997Sken break; 411229997Sken } 412229997Sken break; 413229997Sken } 414229997Sken default: 415229997Sken retval = ENOTTY; 416229997Sken break; 417229997Sken } 418229997Sken 419229997Sken return (retval); 420229997Sken} 421229997Sken 422229997Skenstatic int 423229997Skenctl_backend_ramdisk_rm(struct ctl_be_ramdisk_softc *softc, 424229997Sken struct ctl_lun_req *req) 425229997Sken{ 426229997Sken struct ctl_be_ramdisk_lun *be_lun; 427229997Sken struct ctl_lun_rm_params *params; 428229997Sken int retval; 429229997Sken 430229997Sken 431229997Sken retval = 0; 432229997Sken params = &req->reqdata.rm; 433229997Sken 434229997Sken be_lun = NULL; 435229997Sken 436229997Sken mtx_lock(&softc->lock); 437229997Sken 438229997Sken STAILQ_FOREACH(be_lun, &softc->lun_list, links) { 439229997Sken if (be_lun->ctl_be_lun.lun_id == params->lun_id) 440229997Sken break; 441229997Sken } 442229997Sken mtx_unlock(&softc->lock); 443229997Sken 444229997Sken if (be_lun == NULL) { 445229997Sken snprintf(req->error_str, sizeof(req->error_str), 446229997Sken "%s: LUN %u is not managed by the ramdisk backend", 447229997Sken __func__, params->lun_id); 448229997Sken goto bailout_error; 449229997Sken } 450229997Sken 451229997Sken retval = ctl_disable_lun(&be_lun->ctl_be_lun); 452229997Sken 453229997Sken if (retval != 0) { 454229997Sken snprintf(req->error_str, sizeof(req->error_str), 455229997Sken "%s: error %d returned from ctl_disable_lun() for " 456229997Sken "LUN %d", __func__, retval, params->lun_id); 457229997Sken goto bailout_error; 458229997Sken } 459229997Sken 460229997Sken /* 461229997Sken * Set the waiting flag before we invalidate the LUN. Our shutdown 462229997Sken * routine can be called any time after we invalidate the LUN, 463229997Sken * and can be called from our context. 464229997Sken * 465229997Sken * This tells the shutdown routine that we're waiting, or we're 466229997Sken * going to wait for the shutdown to happen. 467229997Sken */ 468229997Sken mtx_lock(&softc->lock); 469229997Sken be_lun->flags |= CTL_BE_RAMDISK_LUN_WAITING; 470229997Sken mtx_unlock(&softc->lock); 471229997Sken 472229997Sken retval = ctl_invalidate_lun(&be_lun->ctl_be_lun); 473229997Sken if (retval != 0) { 474229997Sken snprintf(req->error_str, sizeof(req->error_str), 475229997Sken "%s: error %d returned from ctl_invalidate_lun() for " 476229997Sken "LUN %d", __func__, retval, params->lun_id); 477252569Smav mtx_lock(&softc->lock); 478252569Smav be_lun->flags &= ~CTL_BE_RAMDISK_LUN_WAITING; 479252569Smav mtx_unlock(&softc->lock); 480229997Sken goto bailout_error; 481229997Sken } 482229997Sken 483229997Sken mtx_lock(&softc->lock); 484229997Sken 485229997Sken while ((be_lun->flags & CTL_BE_RAMDISK_LUN_UNCONFIGURED) == 0) { 486229997Sken retval = msleep(be_lun, &softc->lock, PCATCH, "ctlram", 0); 487229997Sken if (retval == EINTR) 488229997Sken break; 489229997Sken } 490229997Sken be_lun->flags &= ~CTL_BE_RAMDISK_LUN_WAITING; 491229997Sken 492229997Sken /* 493229997Sken * We only remove this LUN from the list and free it (below) if 494229997Sken * retval == 0. If the user interrupted the wait, we just bail out 495229997Sken * without actually freeing the LUN. We let the shutdown routine 496229997Sken * free the LUN if that happens. 497229997Sken */ 498229997Sken if (retval == 0) { 499229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_ramdisk_lun, 500229997Sken links); 501229997Sken softc->num_luns--; 502229997Sken } 503229997Sken 504229997Sken mtx_unlock(&softc->lock); 505229997Sken 506264886Smav if (retval == 0) { 507264886Smav taskqueue_drain(be_lun->io_taskqueue, &be_lun->io_task); 508264886Smav taskqueue_free(be_lun->io_taskqueue); 509268280Smav ctl_free_opts(&be_lun->ctl_be_lun.options); 510267877Smav mtx_destroy(&be_lun->queue_lock); 511229997Sken free(be_lun, M_RAMDISK); 512264886Smav } 513229997Sken 514229997Sken req->status = CTL_LUN_OK; 515229997Sken 516229997Sken return (retval); 517229997Sken 518229997Skenbailout_error: 519229997Sken req->status = CTL_LUN_ERROR; 520229997Sken 521229997Sken return (0); 522229997Sken} 523229997Sken 524229997Skenstatic int 525229997Skenctl_backend_ramdisk_create(struct ctl_be_ramdisk_softc *softc, 526229997Sken struct ctl_lun_req *req, int do_wait) 527229997Sken{ 528229997Sken struct ctl_be_ramdisk_lun *be_lun; 529229997Sken struct ctl_lun_create_params *params; 530229997Sken uint32_t blocksize; 531267481Smav char *value; 532229997Sken char tmpstr[32]; 533267481Smav int retval, unmap; 534229997Sken 535229997Sken retval = 0; 536229997Sken params = &req->reqdata.create; 537229997Sken if (params->blocksize_bytes != 0) 538229997Sken blocksize = params->blocksize_bytes; 539229997Sken else 540229997Sken blocksize = 512; 541229997Sken 542229997Sken be_lun = malloc(sizeof(*be_lun), M_RAMDISK, M_ZERO | (do_wait ? 543229997Sken M_WAITOK : M_NOWAIT)); 544229997Sken 545229997Sken if (be_lun == NULL) { 546229997Sken snprintf(req->error_str, sizeof(req->error_str), 547229997Sken "%s: error allocating %zd bytes", __func__, 548229997Sken sizeof(*be_lun)); 549229997Sken goto bailout_error; 550229997Sken } 551264886Smav sprintf(be_lun->lunname, "cram%d", softc->num_luns); 552268280Smav ctl_init_opts(&be_lun->ctl_be_lun.options, 553268280Smav req->num_be_args, req->kern_be_args); 554229997Sken 555229997Sken if (params->flags & CTL_LUN_FLAG_DEV_TYPE) 556229997Sken be_lun->ctl_be_lun.lun_type = params->device_type; 557229997Sken else 558229997Sken be_lun->ctl_be_lun.lun_type = T_DIRECT; 559229997Sken 560229997Sken if (be_lun->ctl_be_lun.lun_type == T_DIRECT) { 561229997Sken 562229997Sken if (params->lun_size_bytes < blocksize) { 563229997Sken snprintf(req->error_str, sizeof(req->error_str), 564229997Sken "%s: LUN size %ju < blocksize %u", __func__, 565229997Sken params->lun_size_bytes, blocksize); 566229997Sken goto bailout_error; 567229997Sken } 568229997Sken 569229997Sken be_lun->size_blocks = params->lun_size_bytes / blocksize; 570229997Sken be_lun->size_bytes = be_lun->size_blocks * blocksize; 571229997Sken 572229997Sken be_lun->ctl_be_lun.maxlba = be_lun->size_blocks - 1; 573229997Sken } else { 574229997Sken be_lun->ctl_be_lun.maxlba = 0; 575229997Sken blocksize = 0; 576229997Sken be_lun->size_bytes = 0; 577229997Sken be_lun->size_blocks = 0; 578229997Sken } 579229997Sken 580229997Sken be_lun->ctl_be_lun.blocksize = blocksize; 581229997Sken 582229997Sken /* Tell the user the blocksize we ended up using */ 583229997Sken params->blocksize_bytes = blocksize; 584229997Sken 585229997Sken /* Tell the user the exact size we ended up using */ 586229997Sken params->lun_size_bytes = be_lun->size_bytes; 587229997Sken 588229997Sken be_lun->softc = softc; 589229997Sken 590264279Smav unmap = 0; 591268280Smav value = ctl_get_opt(&be_lun->ctl_be_lun.options, "unmap"); 592267481Smav if (value != NULL && strcmp(value, "on") == 0) 593267481Smav unmap = 1; 594254759Strasz 595229997Sken be_lun->flags = CTL_BE_RAMDISK_LUN_UNCONFIGURED; 596229997Sken be_lun->ctl_be_lun.flags = CTL_LUN_FLAG_PRIMARY; 597264274Smav if (unmap) 598264279Smav be_lun->ctl_be_lun.flags |= CTL_LUN_FLAG_UNMAP; 599272734Smav be_lun->ctl_be_lun.atomicblock = UINT32_MAX; 600229997Sken be_lun->ctl_be_lun.be_lun = be_lun; 601229997Sken 602229997Sken if (params->flags & CTL_LUN_FLAG_ID_REQ) { 603229997Sken be_lun->ctl_be_lun.req_lun_id = params->req_lun_id; 604229997Sken be_lun->ctl_be_lun.flags |= CTL_LUN_FLAG_ID_REQ; 605229997Sken } else 606229997Sken be_lun->ctl_be_lun.req_lun_id = 0; 607229997Sken 608229997Sken be_lun->ctl_be_lun.lun_shutdown = ctl_backend_ramdisk_lun_shutdown; 609229997Sken be_lun->ctl_be_lun.lun_config_status = 610229997Sken ctl_backend_ramdisk_lun_config_status; 611229997Sken be_lun->ctl_be_lun.be = &ctl_be_ramdisk_driver; 612229997Sken if ((params->flags & CTL_LUN_FLAG_SERIAL_NUM) == 0) { 613229997Sken snprintf(tmpstr, sizeof(tmpstr), "MYSERIAL%4d", 614229997Sken softc->num_luns); 615229997Sken strncpy((char *)be_lun->ctl_be_lun.serial_num, tmpstr, 616229997Sken ctl_min(sizeof(be_lun->ctl_be_lun.serial_num), 617229997Sken sizeof(tmpstr))); 618229997Sken 619229997Sken /* Tell the user what we used for a serial number */ 620229997Sken strncpy((char *)params->serial_num, tmpstr, 621229997Sken ctl_min(sizeof(params->serial_num), sizeof(tmpstr))); 622229997Sken } else { 623229997Sken strncpy((char *)be_lun->ctl_be_lun.serial_num, 624229997Sken params->serial_num, 625229997Sken ctl_min(sizeof(be_lun->ctl_be_lun.serial_num), 626229997Sken sizeof(params->serial_num))); 627229997Sken } 628229997Sken if ((params->flags & CTL_LUN_FLAG_DEVID) == 0) { 629229997Sken snprintf(tmpstr, sizeof(tmpstr), "MYDEVID%4d", softc->num_luns); 630229997Sken strncpy((char *)be_lun->ctl_be_lun.device_id, tmpstr, 631229997Sken ctl_min(sizeof(be_lun->ctl_be_lun.device_id), 632229997Sken sizeof(tmpstr))); 633229997Sken 634229997Sken /* Tell the user what we used for a device ID */ 635229997Sken strncpy((char *)params->device_id, tmpstr, 636229997Sken ctl_min(sizeof(params->device_id), sizeof(tmpstr))); 637229997Sken } else { 638229997Sken strncpy((char *)be_lun->ctl_be_lun.device_id, 639229997Sken params->device_id, 640229997Sken ctl_min(sizeof(be_lun->ctl_be_lun.device_id), 641229997Sken sizeof(params->device_id))); 642229997Sken } 643229997Sken 644264886Smav STAILQ_INIT(&be_lun->cont_queue); 645267877Smav mtx_init(&be_lun->queue_lock, "cram queue lock", NULL, MTX_DEF); 646264886Smav TASK_INIT(&be_lun->io_task, /*priority*/0, ctl_backend_ramdisk_worker, 647264886Smav be_lun); 648264886Smav 649264886Smav be_lun->io_taskqueue = taskqueue_create(be_lun->lunname, M_WAITOK, 650264886Smav taskqueue_thread_enqueue, /*context*/&be_lun->io_taskqueue); 651264886Smav if (be_lun->io_taskqueue == NULL) { 652264886Smav snprintf(req->error_str, sizeof(req->error_str), 653264886Smav "%s: Unable to create taskqueue", __func__); 654264886Smav goto bailout_error; 655264886Smav } 656264886Smav 657264886Smav retval = taskqueue_start_threads(&be_lun->io_taskqueue, 658264886Smav /*num threads*/1, 659264886Smav /*priority*/PWAIT, 660264886Smav /*thread name*/ 661264886Smav "%s taskq", be_lun->lunname); 662264886Smav if (retval != 0) 663264886Smav goto bailout_error; 664264886Smav 665229997Sken mtx_lock(&softc->lock); 666229997Sken softc->num_luns++; 667229997Sken STAILQ_INSERT_TAIL(&softc->lun_list, be_lun, links); 668229997Sken 669229997Sken mtx_unlock(&softc->lock); 670229997Sken 671229997Sken retval = ctl_add_lun(&be_lun->ctl_be_lun); 672229997Sken if (retval != 0) { 673229997Sken mtx_lock(&softc->lock); 674229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_ramdisk_lun, 675229997Sken links); 676229997Sken softc->num_luns--; 677229997Sken mtx_unlock(&softc->lock); 678229997Sken snprintf(req->error_str, sizeof(req->error_str), 679229997Sken "%s: ctl_add_lun() returned error %d, see dmesg for " 680229997Sken "details", __func__, retval); 681229997Sken retval = 0; 682229997Sken goto bailout_error; 683229997Sken } 684229997Sken 685229997Sken if (do_wait == 0) 686229997Sken return (retval); 687229997Sken 688229997Sken mtx_lock(&softc->lock); 689229997Sken 690229997Sken /* 691229997Sken * Tell the config_status routine that we're waiting so it won't 692229997Sken * clean up the LUN in the event of an error. 693229997Sken */ 694229997Sken be_lun->flags |= CTL_BE_RAMDISK_LUN_WAITING; 695229997Sken 696229997Sken while (be_lun->flags & CTL_BE_RAMDISK_LUN_UNCONFIGURED) { 697229997Sken retval = msleep(be_lun, &softc->lock, PCATCH, "ctlram", 0); 698229997Sken if (retval == EINTR) 699229997Sken break; 700229997Sken } 701229997Sken be_lun->flags &= ~CTL_BE_RAMDISK_LUN_WAITING; 702229997Sken 703229997Sken if (be_lun->flags & CTL_BE_RAMDISK_LUN_CONFIG_ERR) { 704229997Sken snprintf(req->error_str, sizeof(req->error_str), 705229997Sken "%s: LUN configuration error, see dmesg for details", 706229997Sken __func__); 707229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_ramdisk_lun, 708229997Sken links); 709229997Sken softc->num_luns--; 710229997Sken mtx_unlock(&softc->lock); 711229997Sken goto bailout_error; 712229997Sken } else { 713229997Sken params->req_lun_id = be_lun->ctl_be_lun.lun_id; 714229997Sken } 715229997Sken mtx_unlock(&softc->lock); 716229997Sken 717229997Sken req->status = CTL_LUN_OK; 718229997Sken 719229997Sken return (retval); 720229997Sken 721229997Skenbailout_error: 722229997Sken req->status = CTL_LUN_ERROR; 723264886Smav if (be_lun != NULL) { 724264886Smav if (be_lun->io_taskqueue != NULL) { 725264886Smav taskqueue_free(be_lun->io_taskqueue); 726264886Smav } 727268280Smav ctl_free_opts(&be_lun->ctl_be_lun.options); 728267877Smav mtx_destroy(&be_lun->queue_lock); 729264886Smav free(be_lun, M_RAMDISK); 730264886Smav } 731229997Sken 732229997Sken return (retval); 733229997Sken} 734229997Sken 735232604Straszstatic int 736232604Straszctl_backend_ramdisk_modify(struct ctl_be_ramdisk_softc *softc, 737232604Strasz struct ctl_lun_req *req) 738232604Strasz{ 739232604Strasz struct ctl_be_ramdisk_lun *be_lun; 740232604Strasz struct ctl_lun_modify_params *params; 741232604Strasz uint32_t blocksize; 742232604Strasz 743232604Strasz params = &req->reqdata.modify; 744232604Strasz 745232604Strasz be_lun = NULL; 746232604Strasz 747232604Strasz mtx_lock(&softc->lock); 748232604Strasz STAILQ_FOREACH(be_lun, &softc->lun_list, links) { 749232604Strasz if (be_lun->ctl_be_lun.lun_id == params->lun_id) 750232604Strasz break; 751232604Strasz } 752232604Strasz mtx_unlock(&softc->lock); 753232604Strasz 754232604Strasz if (be_lun == NULL) { 755232604Strasz snprintf(req->error_str, sizeof(req->error_str), 756232604Strasz "%s: LUN %u is not managed by the ramdisk backend", 757232604Strasz __func__, params->lun_id); 758232604Strasz goto bailout_error; 759232604Strasz } 760232604Strasz 761232604Strasz if (params->lun_size_bytes == 0) { 762232604Strasz snprintf(req->error_str, sizeof(req->error_str), 763232604Strasz "%s: LUN size \"auto\" not supported " 764232604Strasz "by the ramdisk backend", __func__); 765232604Strasz goto bailout_error; 766232604Strasz } 767232604Strasz 768232604Strasz blocksize = be_lun->ctl_be_lun.blocksize; 769232604Strasz 770232604Strasz if (params->lun_size_bytes < blocksize) { 771232604Strasz snprintf(req->error_str, sizeof(req->error_str), 772232604Strasz "%s: LUN size %ju < blocksize %u", __func__, 773232604Strasz params->lun_size_bytes, blocksize); 774232604Strasz goto bailout_error; 775232604Strasz } 776232604Strasz 777232604Strasz be_lun->size_blocks = params->lun_size_bytes / blocksize; 778232604Strasz be_lun->size_bytes = be_lun->size_blocks * blocksize; 779232604Strasz 780232604Strasz /* 781232604Strasz * The maximum LBA is the size - 1. 782232604Strasz * 783232604Strasz * XXX: Note that this field is being updated without locking, 784232604Strasz * which might cause problems on 32-bit architectures. 785232604Strasz */ 786232604Strasz be_lun->ctl_be_lun.maxlba = be_lun->size_blocks - 1; 787232604Strasz ctl_lun_capacity_changed(&be_lun->ctl_be_lun); 788232604Strasz 789232604Strasz /* Tell the user the exact size we ended up using */ 790232604Strasz params->lun_size_bytes = be_lun->size_bytes; 791232604Strasz 792232604Strasz req->status = CTL_LUN_OK; 793232604Strasz 794232604Strasz return (0); 795232604Strasz 796232604Straszbailout_error: 797232604Strasz req->status = CTL_LUN_ERROR; 798232604Strasz 799232604Strasz return (0); 800232604Strasz} 801232604Strasz 802229997Skenstatic void 803229997Skenctl_backend_ramdisk_lun_shutdown(void *be_lun) 804229997Sken{ 805229997Sken struct ctl_be_ramdisk_lun *lun; 806229997Sken struct ctl_be_ramdisk_softc *softc; 807229997Sken int do_free; 808229997Sken 809229997Sken lun = (struct ctl_be_ramdisk_lun *)be_lun; 810229997Sken softc = lun->softc; 811229997Sken do_free = 0; 812229997Sken 813229997Sken mtx_lock(&softc->lock); 814229997Sken 815229997Sken lun->flags |= CTL_BE_RAMDISK_LUN_UNCONFIGURED; 816229997Sken 817229997Sken if (lun->flags & CTL_BE_RAMDISK_LUN_WAITING) { 818229997Sken wakeup(lun); 819229997Sken } else { 820269058Smav STAILQ_REMOVE(&softc->lun_list, lun, ctl_be_ramdisk_lun, 821229997Sken links); 822229997Sken softc->num_luns--; 823229997Sken do_free = 1; 824229997Sken } 825229997Sken 826229997Sken mtx_unlock(&softc->lock); 827229997Sken 828229997Sken if (do_free != 0) 829229997Sken free(be_lun, M_RAMDISK); 830229997Sken} 831229997Sken 832229997Skenstatic void 833229997Skenctl_backend_ramdisk_lun_config_status(void *be_lun, 834229997Sken ctl_lun_config_status status) 835229997Sken{ 836229997Sken struct ctl_be_ramdisk_lun *lun; 837229997Sken struct ctl_be_ramdisk_softc *softc; 838229997Sken 839229997Sken lun = (struct ctl_be_ramdisk_lun *)be_lun; 840229997Sken softc = lun->softc; 841229997Sken 842229997Sken if (status == CTL_LUN_CONFIG_OK) { 843229997Sken mtx_lock(&softc->lock); 844229997Sken lun->flags &= ~CTL_BE_RAMDISK_LUN_UNCONFIGURED; 845229997Sken if (lun->flags & CTL_BE_RAMDISK_LUN_WAITING) 846229997Sken wakeup(lun); 847229997Sken mtx_unlock(&softc->lock); 848229997Sken 849229997Sken /* 850229997Sken * We successfully added the LUN, attempt to enable it. 851229997Sken */ 852229997Sken if (ctl_enable_lun(&lun->ctl_be_lun) != 0) { 853229997Sken printf("%s: ctl_enable_lun() failed!\n", __func__); 854229997Sken if (ctl_invalidate_lun(&lun->ctl_be_lun) != 0) { 855229997Sken printf("%s: ctl_invalidate_lun() failed!\n", 856229997Sken __func__); 857229997Sken } 858229997Sken } 859229997Sken 860229997Sken return; 861229997Sken } 862229997Sken 863229997Sken 864229997Sken mtx_lock(&softc->lock); 865229997Sken lun->flags &= ~CTL_BE_RAMDISK_LUN_UNCONFIGURED; 866229997Sken 867229997Sken /* 868229997Sken * If we have a user waiting, let him handle the cleanup. If not, 869229997Sken * clean things up here. 870229997Sken */ 871229997Sken if (lun->flags & CTL_BE_RAMDISK_LUN_WAITING) { 872229997Sken lun->flags |= CTL_BE_RAMDISK_LUN_CONFIG_ERR; 873229997Sken wakeup(lun); 874229997Sken } else { 875229997Sken STAILQ_REMOVE(&softc->lun_list, lun, ctl_be_ramdisk_lun, 876229997Sken links); 877229997Sken softc->num_luns--; 878229997Sken free(lun, M_RAMDISK); 879229997Sken } 880229997Sken mtx_unlock(&softc->lock); 881229997Sken} 882229997Sken 883229997Skenstatic int 884229997Skenctl_backend_ramdisk_config_write(union ctl_io *io) 885229997Sken{ 886229997Sken struct ctl_be_ramdisk_softc *softc; 887229997Sken int retval; 888229997Sken 889229997Sken retval = 0; 890229997Sken softc = &rd_softc; 891229997Sken 892229997Sken switch (io->scsiio.cdb[0]) { 893229997Sken case SYNCHRONIZE_CACHE: 894229997Sken case SYNCHRONIZE_CACHE_16: 895229997Sken /* 896229997Sken * The upper level CTL code will filter out any CDBs with 897229997Sken * the immediate bit set and return the proper error. It 898229997Sken * will also not allow a sync cache command to go to a LUN 899229997Sken * that is powered down. 900229997Sken * 901229997Sken * We don't really need to worry about what LBA range the 902229997Sken * user asked to be synced out. When they issue a sync 903229997Sken * cache command, we'll sync out the whole thing. 904229997Sken * 905229997Sken * This is obviously just a stubbed out implementation. 906229997Sken * The real implementation will be in the RAIDCore/CTL 907229997Sken * interface, and can only really happen when RAIDCore 908229997Sken * implements a per-array cache sync. 909229997Sken */ 910229997Sken ctl_set_success(&io->scsiio); 911229997Sken ctl_config_write_done(io); 912229997Sken break; 913229997Sken case START_STOP_UNIT: { 914229997Sken struct scsi_start_stop_unit *cdb; 915229997Sken struct ctl_be_lun *ctl_be_lun; 916229997Sken struct ctl_be_ramdisk_lun *be_lun; 917229997Sken 918229997Sken cdb = (struct scsi_start_stop_unit *)io->scsiio.cdb; 919229997Sken 920229997Sken ctl_be_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 921229997Sken CTL_PRIV_BACKEND_LUN].ptr; 922229997Sken be_lun = (struct ctl_be_ramdisk_lun *)ctl_be_lun->be_lun; 923229997Sken 924229997Sken if (cdb->how & SSS_START) 925229997Sken retval = ctl_start_lun(ctl_be_lun); 926229997Sken else { 927229997Sken retval = ctl_stop_lun(ctl_be_lun); 928229997Sken#ifdef NEEDTOPORT 929229997Sken if ((retval == 0) 930229997Sken && (cdb->byte2 & SSS_ONOFFLINE)) 931229997Sken retval = ctl_lun_offline(ctl_be_lun); 932229997Sken#endif 933229997Sken } 934229997Sken 935229997Sken /* 936229997Sken * In general, the above routines should not fail. They 937229997Sken * just set state for the LUN. So we've got something 938229997Sken * pretty wrong here if we can't start or stop the LUN. 939229997Sken */ 940229997Sken if (retval != 0) { 941229997Sken ctl_set_internal_failure(&io->scsiio, 942229997Sken /*sks_valid*/ 1, 943229997Sken /*retry_count*/ 0xf051); 944229997Sken retval = CTL_RETVAL_COMPLETE; 945229997Sken } else { 946229997Sken ctl_set_success(&io->scsiio); 947229997Sken } 948229997Sken ctl_config_write_done(io); 949229997Sken break; 950229997Sken } 951264274Smav case WRITE_SAME_10: 952264274Smav case WRITE_SAME_16: 953264274Smav case UNMAP: 954264274Smav ctl_set_success(&io->scsiio); 955264274Smav ctl_config_write_done(io); 956264274Smav break; 957229997Sken default: 958229997Sken ctl_set_invalid_opcode(&io->scsiio); 959229997Sken ctl_config_write_done(io); 960229997Sken retval = CTL_RETVAL_COMPLETE; 961229997Sken break; 962229997Sken } 963229997Sken 964229997Sken return (retval); 965229997Sken} 966229997Sken 967229997Skenstatic int 968229997Skenctl_backend_ramdisk_config_read(union ctl_io *io) 969229997Sken{ 970275474Smav int retval = 0; 971275474Smav 972275474Smav switch (io->scsiio.cdb[0]) { 973275474Smav case SERVICE_ACTION_IN: 974275474Smav if (io->scsiio.cdb[1] == SGLS_SERVICE_ACTION) { 975275474Smav /* We have nothing to tell, leave default data. */ 976275474Smav ctl_config_read_done(io); 977275474Smav retval = CTL_RETVAL_COMPLETE; 978275474Smav break; 979275474Smav } 980275474Smav ctl_set_invalid_field(&io->scsiio, 981275474Smav /*sks_valid*/ 1, 982275474Smav /*command*/ 1, 983275474Smav /*field*/ 1, 984275474Smav /*bit_valid*/ 1, 985275474Smav /*bit*/ 4); 986275474Smav ctl_config_read_done(io); 987275474Smav retval = CTL_RETVAL_COMPLETE; 988275474Smav break; 989275474Smav default: 990275474Smav ctl_set_invalid_opcode(&io->scsiio); 991275474Smav ctl_config_read_done(io); 992275474Smav retval = CTL_RETVAL_COMPLETE; 993275474Smav break; 994275474Smav } 995275474Smav 996275474Smav return (retval); 997229997Sken} 998