ctl_backend_ramdisk.c revision 287670
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 287670 2015-09-11 14:33:05Z 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> 59287621Smav#include <sys/sysctl.h> 60229997Sken 61229997Sken#include <cam/scsi/scsi_all.h> 62287621Smav#include <cam/scsi/scsi_da.h> 63229997Sken#include <cam/ctl/ctl_io.h> 64229997Sken#include <cam/ctl/ctl.h> 65229997Sken#include <cam/ctl/ctl_util.h> 66229997Sken#include <cam/ctl/ctl_backend.h> 67229997Sken#include <cam/ctl/ctl_debug.h> 68229997Sken#include <cam/ctl/ctl_ioctl.h> 69287621Smav#include <cam/ctl/ctl_ha.h> 70287621Smav#include <cam/ctl/ctl_private.h> 71229997Sken#include <cam/ctl/ctl_error.h> 72229997Sken 73229997Skentypedef enum { 74229997Sken CTL_BE_RAMDISK_LUN_UNCONFIGURED = 0x01, 75229997Sken CTL_BE_RAMDISK_LUN_CONFIG_ERR = 0x02, 76229997Sken CTL_BE_RAMDISK_LUN_WAITING = 0x04 77229997Sken} ctl_be_ramdisk_lun_flags; 78229997Sken 79229997Skenstruct ctl_be_ramdisk_lun { 80287500Smav struct ctl_lun_create_params params; 81264886Smav char lunname[32]; 82229997Sken uint64_t size_bytes; 83229997Sken uint64_t size_blocks; 84229997Sken struct ctl_be_ramdisk_softc *softc; 85229997Sken ctl_be_ramdisk_lun_flags flags; 86229997Sken STAILQ_ENTRY(ctl_be_ramdisk_lun) links; 87287499Smav struct ctl_be_lun cbe_lun; 88264886Smav struct taskqueue *io_taskqueue; 89264886Smav struct task io_task; 90264886Smav STAILQ_HEAD(, ctl_io_hdr) cont_queue; 91267877Smav struct mtx_padalign queue_lock; 92229997Sken}; 93229997Sken 94229997Skenstruct ctl_be_ramdisk_softc { 95229997Sken struct mtx lock; 96229997Sken int rd_size; 97229997Sken#ifdef CTL_RAMDISK_PAGES 98229997Sken uint8_t **ramdisk_pages; 99229997Sken int num_pages; 100229997Sken#else 101229997Sken uint8_t *ramdisk_buffer; 102229997Sken#endif 103229997Sken int num_luns; 104229997Sken STAILQ_HEAD(, ctl_be_ramdisk_lun) lun_list; 105229997Sken}; 106229997Sken 107229997Skenstatic struct ctl_be_ramdisk_softc rd_softc; 108287621Smavextern struct ctl_softc *control_softc; 109229997Sken 110229997Skenint ctl_backend_ramdisk_init(void); 111229997Skenvoid ctl_backend_ramdisk_shutdown(void); 112229997Skenstatic int ctl_backend_ramdisk_move_done(union ctl_io *io); 113229997Skenstatic int ctl_backend_ramdisk_submit(union ctl_io *io); 114264886Smavstatic void ctl_backend_ramdisk_continue(union ctl_io *io); 115229997Skenstatic int ctl_backend_ramdisk_ioctl(struct cdev *dev, u_long cmd, 116229997Sken caddr_t addr, int flag, struct thread *td); 117229997Skenstatic int ctl_backend_ramdisk_rm(struct ctl_be_ramdisk_softc *softc, 118229997Sken struct ctl_lun_req *req); 119229997Skenstatic int ctl_backend_ramdisk_create(struct ctl_be_ramdisk_softc *softc, 120287499Smav struct ctl_lun_req *req); 121232604Straszstatic int ctl_backend_ramdisk_modify(struct ctl_be_ramdisk_softc *softc, 122232604Strasz struct ctl_lun_req *req); 123264886Smavstatic void ctl_backend_ramdisk_worker(void *context, int pending); 124229997Skenstatic void ctl_backend_ramdisk_lun_shutdown(void *be_lun); 125229997Skenstatic void ctl_backend_ramdisk_lun_config_status(void *be_lun, 126229997Sken ctl_lun_config_status status); 127229997Skenstatic int ctl_backend_ramdisk_config_write(union ctl_io *io); 128229997Skenstatic int ctl_backend_ramdisk_config_read(union ctl_io *io); 129229997Sken 130229997Skenstatic struct ctl_backend_driver ctl_be_ramdisk_driver = 131229997Sken{ 132230334Sken .name = "ramdisk", 133230334Sken .flags = CTL_BE_FLAG_HAS_CONFIG, 134230334Sken .init = ctl_backend_ramdisk_init, 135230334Sken .data_submit = ctl_backend_ramdisk_submit, 136230334Sken .data_move_done = ctl_backend_ramdisk_move_done, 137230334Sken .config_read = ctl_backend_ramdisk_config_read, 138230334Sken .config_write = ctl_backend_ramdisk_config_write, 139230334Sken .ioctl = ctl_backend_ramdisk_ioctl 140229997Sken}; 141229997Sken 142229997SkenMALLOC_DEFINE(M_RAMDISK, "ramdisk", "Memory used for CTL RAMdisk"); 143229997SkenCTL_BACKEND_DECLARE(cbr, ctl_be_ramdisk_driver); 144229997Sken 145229997Skenint 146229997Skenctl_backend_ramdisk_init(void) 147229997Sken{ 148229997Sken struct ctl_be_ramdisk_softc *softc; 149229997Sken#ifdef CTL_RAMDISK_PAGES 150240993Strasz int i; 151229997Sken#endif 152229997Sken 153229997Sken 154229997Sken softc = &rd_softc; 155229997Sken 156229997Sken memset(softc, 0, sizeof(*softc)); 157229997Sken 158267877Smav mtx_init(&softc->lock, "ctlramdisk", NULL, MTX_DEF); 159229997Sken 160229997Sken STAILQ_INIT(&softc->lun_list); 161264886Smav softc->rd_size = 1024 * 1024; 162229997Sken#ifdef CTL_RAMDISK_PAGES 163229997Sken softc->num_pages = softc->rd_size / PAGE_SIZE; 164229997Sken softc->ramdisk_pages = (uint8_t **)malloc(sizeof(uint8_t *) * 165229997Sken softc->num_pages, M_RAMDISK, 166229997Sken M_WAITOK); 167240993Strasz for (i = 0; i < softc->num_pages; i++) 168229997Sken softc->ramdisk_pages[i] = malloc(PAGE_SIZE, M_RAMDISK,M_WAITOK); 169229997Sken#else 170229997Sken softc->ramdisk_buffer = (uint8_t *)malloc(softc->rd_size, M_RAMDISK, 171229997Sken M_WAITOK); 172229997Sken#endif 173229997Sken 174229997Sken return (0); 175229997Sken} 176229997Sken 177229997Skenvoid 178229997Skenctl_backend_ramdisk_shutdown(void) 179229997Sken{ 180229997Sken struct ctl_be_ramdisk_softc *softc; 181229997Sken struct ctl_be_ramdisk_lun *lun, *next_lun; 182229997Sken#ifdef CTL_RAMDISK_PAGES 183229997Sken int i; 184229997Sken#endif 185229997Sken 186229997Sken softc = &rd_softc; 187229997Sken 188229997Sken mtx_lock(&softc->lock); 189229997Sken for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 190229997Sken /* 191229997Sken * Grab the next LUN. The current LUN may get removed by 192229997Sken * ctl_invalidate_lun(), which will call our LUN shutdown 193229997Sken * routine, if there is no outstanding I/O for this LUN. 194229997Sken */ 195229997Sken next_lun = STAILQ_NEXT(lun, links); 196229997Sken 197229997Sken /* 198229997Sken * Drop our lock here. Since ctl_invalidate_lun() can call 199229997Sken * back into us, this could potentially lead to a recursive 200229997Sken * lock of the same mutex, which would cause a hang. 201229997Sken */ 202229997Sken mtx_unlock(&softc->lock); 203287499Smav ctl_disable_lun(&lun->cbe_lun); 204287499Smav ctl_invalidate_lun(&lun->cbe_lun); 205229997Sken mtx_lock(&softc->lock); 206229997Sken } 207229997Sken mtx_unlock(&softc->lock); 208229997Sken 209229997Sken#ifdef CTL_RAMDISK_PAGES 210229997Sken for (i = 0; i < softc->num_pages; i++) 211229997Sken free(softc->ramdisk_pages[i], M_RAMDISK); 212229997Sken 213229997Sken free(softc->ramdisk_pages, M_RAMDISK); 214229997Sken#else 215229997Sken free(softc->ramdisk_buffer, M_RAMDISK); 216229997Sken#endif 217229997Sken 218229997Sken if (ctl_backend_deregister(&ctl_be_ramdisk_driver) != 0) { 219229997Sken printf("ctl_backend_ramdisk_shutdown: " 220229997Sken "ctl_backend_deregister() failed!\n"); 221229997Sken } 222229997Sken} 223229997Sken 224229997Skenstatic int 225229997Skenctl_backend_ramdisk_move_done(union ctl_io *io) 226229997Sken{ 227287499Smav struct ctl_be_lun *cbe_lun; 228264886Smav struct ctl_be_ramdisk_lun *be_lun; 229229997Sken#ifdef CTL_TIME_IO 230229997Sken struct bintime cur_bt; 231229997Sken#endif 232229997Sken 233229997Sken CTL_DEBUG_PRINT(("ctl_backend_ramdisk_move_done\n")); 234287499Smav cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 235264886Smav CTL_PRIV_BACKEND_LUN].ptr; 236287499Smav be_lun = (struct ctl_be_ramdisk_lun *)cbe_lun->be_lun; 237264886Smav#ifdef CTL_TIME_IO 238264886Smav getbintime(&cur_bt); 239264886Smav bintime_sub(&cur_bt, &io->io_hdr.dma_start_bt); 240264886Smav bintime_add(&io->io_hdr.dma_bt, &cur_bt); 241264886Smav io->io_hdr.num_dmas++; 242264886Smav#endif 243264886Smav if (io->scsiio.kern_sg_entries > 0) 244264886Smav free(io->scsiio.kern_data_ptr, M_RAMDISK); 245264886Smav io->scsiio.kern_rel_offset += io->scsiio.kern_data_len; 246275058Smav if (io->io_hdr.flags & CTL_FLAG_ABORT) { 247275058Smav ; 248275058Smav } else if ((io->io_hdr.port_status == 0) && 249275058Smav ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) { 250267519Smav if (io->io_hdr.ctl_private[CTL_PRIV_BACKEND].integer > 0) { 251267877Smav mtx_lock(&be_lun->queue_lock); 252264886Smav STAILQ_INSERT_TAIL(&be_lun->cont_queue, 253264886Smav &io->io_hdr, links); 254267877Smav mtx_unlock(&be_lun->queue_lock); 255264886Smav taskqueue_enqueue(be_lun->io_taskqueue, 256264886Smav &be_lun->io_task); 257264886Smav return (0); 258264886Smav } 259275009Smav ctl_set_success(&io->scsiio); 260275058Smav } else if ((io->io_hdr.port_status != 0) && 261275058Smav ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 262275058Smav (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 263229997Sken /* 264229997Sken * For hardware error sense keys, the sense key 265229997Sken * specific value is defined to be a retry count, 266229997Sken * but we use it to pass back an internal FETD 267229997Sken * error code. XXX KDM Hopefully the FETD is only 268229997Sken * using 16 bits for an error code, since that's 269229997Sken * all the space we have in the sks field. 270229997Sken */ 271229997Sken ctl_set_internal_failure(&io->scsiio, 272229997Sken /*sks_valid*/ 1, 273229997Sken /*retry_count*/ 274229997Sken io->io_hdr.port_status); 275229997Sken } 276267537Smav ctl_data_submit_done(io); 277229997Sken return(0); 278229997Sken} 279229997Sken 280229997Skenstatic int 281229997Skenctl_backend_ramdisk_submit(union ctl_io *io) 282229997Sken{ 283287499Smav struct ctl_be_lun *cbe_lun; 284267537Smav struct ctl_lba_len_flags *lbalen; 285229997Sken 286287499Smav cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 287267519Smav CTL_PRIV_BACKEND_LUN].ptr; 288267537Smav lbalen = (struct ctl_lba_len_flags *)&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 289267537Smav if (lbalen->flags & CTL_LLF_VERIFY) { 290267537Smav ctl_set_success(&io->scsiio); 291267537Smav ctl_data_submit_done(io); 292267537Smav return (CTL_RETVAL_COMPLETE); 293267537Smav } 294267519Smav io->io_hdr.ctl_private[CTL_PRIV_BACKEND].integer = 295287499Smav lbalen->len * cbe_lun->blocksize; 296264886Smav ctl_backend_ramdisk_continue(io); 297264886Smav return (CTL_RETVAL_COMPLETE); 298264886Smav} 299229997Sken 300264886Smavstatic void 301264886Smavctl_backend_ramdisk_continue(union ctl_io *io) 302264886Smav{ 303264886Smav struct ctl_be_ramdisk_softc *softc; 304264886Smav int len, len_filled, sg_filled; 305264886Smav#ifdef CTL_RAMDISK_PAGES 306264886Smav struct ctl_sg_entry *sg_entries; 307264886Smav int i; 308264886Smav#endif 309229997Sken 310264886Smav softc = &rd_softc; 311267519Smav len = io->io_hdr.ctl_private[CTL_PRIV_BACKEND].integer; 312229997Sken#ifdef CTL_RAMDISK_PAGES 313264886Smav sg_filled = min(btoc(len), softc->num_pages); 314264886Smav if (sg_filled > 1) { 315229997Sken io->scsiio.kern_data_ptr = malloc(sizeof(struct ctl_sg_entry) * 316264886Smav sg_filled, M_RAMDISK, 317229997Sken M_WAITOK); 318229997Sken sg_entries = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 319264886Smav for (i = 0, len_filled = 0; i < sg_filled; i++) { 320229997Sken sg_entries[i].addr = softc->ramdisk_pages[i]; 321275953Smav sg_entries[i].len = MIN(PAGE_SIZE, len - len_filled); 322264886Smav len_filled += sg_entries[i].len; 323229997Sken } 324264886Smav io->io_hdr.flags |= CTL_FLAG_KDPTR_SGLIST; 325229997Sken } else { 326264886Smav sg_filled = 0; 327264886Smav len_filled = len; 328229997Sken io->scsiio.kern_data_ptr = softc->ramdisk_pages[0]; 329264886Smav } 330229997Sken#else 331264886Smav sg_filled = 0; 332264886Smav len_filled = min(len, softc->rd_size); 333264886Smav io->scsiio.kern_data_ptr = softc->ramdisk_buffer; 334264886Smav#endif /* CTL_RAMDISK_PAGES */ 335229997Sken 336267514Smav io->scsiio.be_move_done = ctl_backend_ramdisk_move_done; 337267514Smav io->scsiio.kern_data_resid = 0; 338264886Smav io->scsiio.kern_data_len = len_filled; 339264886Smav io->scsiio.kern_sg_entries = sg_filled; 340264886Smav io->io_hdr.flags |= CTL_FLAG_ALLOCATED; 341267519Smav io->io_hdr.ctl_private[CTL_PRIV_BACKEND].integer -= len_filled; 342229997Sken#ifdef CTL_TIME_IO 343229997Sken getbintime(&io->io_hdr.dma_start_bt); 344229997Sken#endif 345229997Sken ctl_datamove(io); 346264886Smav} 347229997Sken 348264886Smavstatic void 349264886Smavctl_backend_ramdisk_worker(void *context, int pending) 350264886Smav{ 351264886Smav struct ctl_be_ramdisk_softc *softc; 352264886Smav struct ctl_be_ramdisk_lun *be_lun; 353264886Smav union ctl_io *io; 354264886Smav 355264886Smav be_lun = (struct ctl_be_ramdisk_lun *)context; 356264886Smav softc = be_lun->softc; 357264886Smav 358267877Smav mtx_lock(&be_lun->queue_lock); 359264886Smav for (;;) { 360264886Smav io = (union ctl_io *)STAILQ_FIRST(&be_lun->cont_queue); 361264886Smav if (io != NULL) { 362264886Smav STAILQ_REMOVE(&be_lun->cont_queue, &io->io_hdr, 363264886Smav ctl_io_hdr, links); 364264886Smav 365267877Smav mtx_unlock(&be_lun->queue_lock); 366264886Smav 367264886Smav ctl_backend_ramdisk_continue(io); 368264886Smav 369267877Smav mtx_lock(&be_lun->queue_lock); 370264886Smav continue; 371264886Smav } 372264886Smav 373264886Smav /* 374264886Smav * If we get here, there is no work left in the queues, so 375264886Smav * just break out and let the task queue go to sleep. 376264886Smav */ 377264886Smav break; 378264886Smav } 379267877Smav mtx_unlock(&be_lun->queue_lock); 380229997Sken} 381229997Sken 382229997Skenstatic int 383229997Skenctl_backend_ramdisk_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 384229997Sken int flag, struct thread *td) 385229997Sken{ 386229997Sken struct ctl_be_ramdisk_softc *softc; 387229997Sken int retval; 388229997Sken 389229997Sken retval = 0; 390229997Sken softc = &rd_softc; 391229997Sken 392229997Sken switch (cmd) { 393229997Sken case CTL_LUN_REQ: { 394229997Sken struct ctl_lun_req *lun_req; 395229997Sken 396229997Sken lun_req = (struct ctl_lun_req *)addr; 397229997Sken 398229997Sken switch (lun_req->reqtype) { 399229997Sken case CTL_LUNREQ_CREATE: 400287499Smav retval = ctl_backend_ramdisk_create(softc, lun_req); 401229997Sken break; 402229997Sken case CTL_LUNREQ_RM: 403229997Sken retval = ctl_backend_ramdisk_rm(softc, lun_req); 404229997Sken break; 405232604Strasz case CTL_LUNREQ_MODIFY: 406232604Strasz retval = ctl_backend_ramdisk_modify(softc, lun_req); 407232604Strasz break; 408229997Sken default: 409229997Sken lun_req->status = CTL_LUN_ERROR; 410229997Sken snprintf(lun_req->error_str, sizeof(lun_req->error_str), 411229997Sken "%s: invalid LUN request type %d", __func__, 412229997Sken lun_req->reqtype); 413229997Sken break; 414229997Sken } 415229997Sken break; 416229997Sken } 417229997Sken default: 418229997Sken retval = ENOTTY; 419229997Sken break; 420229997Sken } 421229997Sken 422229997Sken return (retval); 423229997Sken} 424229997Sken 425229997Skenstatic int 426229997Skenctl_backend_ramdisk_rm(struct ctl_be_ramdisk_softc *softc, 427229997Sken struct ctl_lun_req *req) 428229997Sken{ 429229997Sken struct ctl_be_ramdisk_lun *be_lun; 430229997Sken struct ctl_lun_rm_params *params; 431229997Sken int retval; 432229997Sken 433229997Sken 434229997Sken retval = 0; 435229997Sken params = &req->reqdata.rm; 436229997Sken 437229997Sken be_lun = NULL; 438229997Sken 439229997Sken mtx_lock(&softc->lock); 440229997Sken 441229997Sken STAILQ_FOREACH(be_lun, &softc->lun_list, links) { 442287499Smav if (be_lun->cbe_lun.lun_id == params->lun_id) 443229997Sken break; 444229997Sken } 445229997Sken mtx_unlock(&softc->lock); 446229997Sken 447229997Sken if (be_lun == NULL) { 448229997Sken snprintf(req->error_str, sizeof(req->error_str), 449229997Sken "%s: LUN %u is not managed by the ramdisk backend", 450229997Sken __func__, params->lun_id); 451229997Sken goto bailout_error; 452229997Sken } 453229997Sken 454287499Smav retval = ctl_disable_lun(&be_lun->cbe_lun); 455229997Sken 456229997Sken if (retval != 0) { 457229997Sken snprintf(req->error_str, sizeof(req->error_str), 458229997Sken "%s: error %d returned from ctl_disable_lun() for " 459229997Sken "LUN %d", __func__, retval, params->lun_id); 460229997Sken goto bailout_error; 461229997Sken } 462229997Sken 463229997Sken /* 464229997Sken * Set the waiting flag before we invalidate the LUN. Our shutdown 465229997Sken * routine can be called any time after we invalidate the LUN, 466229997Sken * and can be called from our context. 467229997Sken * 468229997Sken * This tells the shutdown routine that we're waiting, or we're 469229997Sken * going to wait for the shutdown to happen. 470229997Sken */ 471229997Sken mtx_lock(&softc->lock); 472229997Sken be_lun->flags |= CTL_BE_RAMDISK_LUN_WAITING; 473229997Sken mtx_unlock(&softc->lock); 474229997Sken 475287499Smav retval = ctl_invalidate_lun(&be_lun->cbe_lun); 476229997Sken if (retval != 0) { 477229997Sken snprintf(req->error_str, sizeof(req->error_str), 478229997Sken "%s: error %d returned from ctl_invalidate_lun() for " 479229997Sken "LUN %d", __func__, retval, params->lun_id); 480252569Smav mtx_lock(&softc->lock); 481252569Smav be_lun->flags &= ~CTL_BE_RAMDISK_LUN_WAITING; 482252569Smav mtx_unlock(&softc->lock); 483229997Sken goto bailout_error; 484229997Sken } 485229997Sken 486229997Sken mtx_lock(&softc->lock); 487229997Sken 488229997Sken while ((be_lun->flags & CTL_BE_RAMDISK_LUN_UNCONFIGURED) == 0) { 489229997Sken retval = msleep(be_lun, &softc->lock, PCATCH, "ctlram", 0); 490229997Sken if (retval == EINTR) 491229997Sken break; 492229997Sken } 493229997Sken be_lun->flags &= ~CTL_BE_RAMDISK_LUN_WAITING; 494229997Sken 495229997Sken /* 496229997Sken * We only remove this LUN from the list and free it (below) if 497229997Sken * retval == 0. If the user interrupted the wait, we just bail out 498229997Sken * without actually freeing the LUN. We let the shutdown routine 499229997Sken * free the LUN if that happens. 500229997Sken */ 501229997Sken if (retval == 0) { 502229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_ramdisk_lun, 503229997Sken links); 504229997Sken softc->num_luns--; 505229997Sken } 506229997Sken 507229997Sken mtx_unlock(&softc->lock); 508229997Sken 509264886Smav if (retval == 0) { 510287670Smav taskqueue_drain_all(be_lun->io_taskqueue); 511264886Smav taskqueue_free(be_lun->io_taskqueue); 512287499Smav ctl_free_opts(&be_lun->cbe_lun.options); 513267877Smav mtx_destroy(&be_lun->queue_lock); 514229997Sken free(be_lun, M_RAMDISK); 515264886Smav } 516229997Sken 517229997Sken req->status = CTL_LUN_OK; 518229997Sken 519229997Sken return (retval); 520229997Sken 521229997Skenbailout_error: 522229997Sken req->status = CTL_LUN_ERROR; 523229997Sken 524229997Sken return (0); 525229997Sken} 526229997Sken 527229997Skenstatic int 528229997Skenctl_backend_ramdisk_create(struct ctl_be_ramdisk_softc *softc, 529287499Smav struct ctl_lun_req *req) 530229997Sken{ 531229997Sken struct ctl_be_ramdisk_lun *be_lun; 532287499Smav struct ctl_be_lun *cbe_lun; 533229997Sken struct ctl_lun_create_params *params; 534267481Smav char *value; 535229997Sken char tmpstr[32]; 536287499Smav int retval; 537229997Sken 538229997Sken retval = 0; 539229997Sken params = &req->reqdata.create; 540229997Sken 541287499Smav be_lun = malloc(sizeof(*be_lun), M_RAMDISK, M_ZERO | M_WAITOK); 542287499Smav cbe_lun = &be_lun->cbe_lun; 543287499Smav cbe_lun->be_lun = be_lun; 544287500Smav be_lun->params = req->reqdata.create; 545287499Smav be_lun->softc = softc; 546264886Smav sprintf(be_lun->lunname, "cram%d", softc->num_luns); 547287499Smav ctl_init_opts(&cbe_lun->options, req->num_be_args, req->kern_be_args); 548229997Sken 549229997Sken if (params->flags & CTL_LUN_FLAG_DEV_TYPE) 550287499Smav cbe_lun->lun_type = params->device_type; 551229997Sken else 552287499Smav cbe_lun->lun_type = T_DIRECT; 553287499Smav be_lun->flags = CTL_BE_RAMDISK_LUN_UNCONFIGURED; 554287621Smav cbe_lun->flags = 0; 555287621Smav value = ctl_get_opt(&cbe_lun->options, "ha_role"); 556287621Smav if (value != NULL) { 557287621Smav if (strcmp(value, "primary") == 0) 558287621Smav cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY; 559287621Smav } else if (control_softc->flags & CTL_FLAG_ACTIVE_SHELF) 560287621Smav cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY; 561229997Sken 562287499Smav if (cbe_lun->lun_type == T_DIRECT) { 563287499Smav if (params->blocksize_bytes != 0) 564287499Smav cbe_lun->blocksize = params->blocksize_bytes; 565287499Smav else 566287499Smav cbe_lun->blocksize = 512; 567287499Smav if (params->lun_size_bytes < cbe_lun->blocksize) { 568229997Sken snprintf(req->error_str, sizeof(req->error_str), 569229997Sken "%s: LUN size %ju < blocksize %u", __func__, 570287499Smav params->lun_size_bytes, cbe_lun->blocksize); 571229997Sken goto bailout_error; 572229997Sken } 573287499Smav be_lun->size_blocks = params->lun_size_bytes / cbe_lun->blocksize; 574287499Smav be_lun->size_bytes = be_lun->size_blocks * cbe_lun->blocksize; 575287499Smav cbe_lun->maxlba = be_lun->size_blocks - 1; 576287499Smav cbe_lun->atomicblock = UINT32_MAX; 577287499Smav cbe_lun->opttxferlen = softc->rd_size / cbe_lun->blocksize; 578229997Sken } 579229997Sken 580229997Sken /* Tell the user the blocksize we ended up using */ 581287499Smav params->blocksize_bytes = cbe_lun->blocksize; 582229997Sken params->lun_size_bytes = be_lun->size_bytes; 583229997Sken 584287499Smav value = ctl_get_opt(&cbe_lun->options, "unmap"); 585267481Smav if (value != NULL && strcmp(value, "on") == 0) 586287499Smav cbe_lun->flags |= CTL_LUN_FLAG_UNMAP; 587287499Smav value = ctl_get_opt(&cbe_lun->options, "readonly"); 588287499Smav if (value != NULL && strcmp(value, "on") == 0) 589287499Smav cbe_lun->flags |= CTL_LUN_FLAG_READONLY; 590287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_OFF; 591287499Smav value = ctl_get_opt(&cbe_lun->options, "serseq"); 592287499Smav if (value != NULL && strcmp(value, "on") == 0) 593287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_ON; 594287499Smav else if (value != NULL && strcmp(value, "read") == 0) 595287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_READ; 596287499Smav else if (value != NULL && strcmp(value, "off") == 0) 597287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_OFF; 598254759Strasz 599229997Sken if (params->flags & CTL_LUN_FLAG_ID_REQ) { 600287499Smav cbe_lun->req_lun_id = params->req_lun_id; 601287499Smav cbe_lun->flags |= CTL_LUN_FLAG_ID_REQ; 602229997Sken } else 603287499Smav cbe_lun->req_lun_id = 0; 604229997Sken 605287499Smav cbe_lun->lun_shutdown = ctl_backend_ramdisk_lun_shutdown; 606287499Smav cbe_lun->lun_config_status = ctl_backend_ramdisk_lun_config_status; 607287499Smav cbe_lun->be = &ctl_be_ramdisk_driver; 608229997Sken if ((params->flags & CTL_LUN_FLAG_SERIAL_NUM) == 0) { 609229997Sken snprintf(tmpstr, sizeof(tmpstr), "MYSERIAL%4d", 610229997Sken softc->num_luns); 611287499Smav strncpy((char *)cbe_lun->serial_num, tmpstr, 612287499Smav MIN(sizeof(cbe_lun->serial_num), sizeof(tmpstr))); 613229997Sken 614229997Sken /* Tell the user what we used for a serial number */ 615229997Sken strncpy((char *)params->serial_num, tmpstr, 616275953Smav MIN(sizeof(params->serial_num), sizeof(tmpstr))); 617229997Sken } else { 618287499Smav strncpy((char *)cbe_lun->serial_num, params->serial_num, 619287499Smav MIN(sizeof(cbe_lun->serial_num), 620275953Smav sizeof(params->serial_num))); 621229997Sken } 622229997Sken if ((params->flags & CTL_LUN_FLAG_DEVID) == 0) { 623229997Sken snprintf(tmpstr, sizeof(tmpstr), "MYDEVID%4d", softc->num_luns); 624287499Smav strncpy((char *)cbe_lun->device_id, tmpstr, 625287499Smav MIN(sizeof(cbe_lun->device_id), sizeof(tmpstr))); 626229997Sken 627229997Sken /* Tell the user what we used for a device ID */ 628229997Sken strncpy((char *)params->device_id, tmpstr, 629275953Smav MIN(sizeof(params->device_id), sizeof(tmpstr))); 630229997Sken } else { 631287499Smav strncpy((char *)cbe_lun->device_id, params->device_id, 632287499Smav MIN(sizeof(cbe_lun->device_id), 633275953Smav sizeof(params->device_id))); 634229997Sken } 635229997Sken 636264886Smav STAILQ_INIT(&be_lun->cont_queue); 637267877Smav mtx_init(&be_lun->queue_lock, "cram queue lock", NULL, MTX_DEF); 638264886Smav TASK_INIT(&be_lun->io_task, /*priority*/0, ctl_backend_ramdisk_worker, 639264886Smav be_lun); 640264886Smav 641264886Smav be_lun->io_taskqueue = taskqueue_create(be_lun->lunname, M_WAITOK, 642264886Smav taskqueue_thread_enqueue, /*context*/&be_lun->io_taskqueue); 643264886Smav if (be_lun->io_taskqueue == NULL) { 644264886Smav snprintf(req->error_str, sizeof(req->error_str), 645264886Smav "%s: Unable to create taskqueue", __func__); 646264886Smav goto bailout_error; 647264886Smav } 648264886Smav 649264886Smav retval = taskqueue_start_threads(&be_lun->io_taskqueue, 650264886Smav /*num threads*/1, 651264886Smav /*priority*/PWAIT, 652264886Smav /*thread name*/ 653264886Smav "%s taskq", be_lun->lunname); 654264886Smav if (retval != 0) 655264886Smav goto bailout_error; 656264886Smav 657229997Sken mtx_lock(&softc->lock); 658229997Sken softc->num_luns++; 659229997Sken STAILQ_INSERT_TAIL(&softc->lun_list, be_lun, links); 660229997Sken 661229997Sken mtx_unlock(&softc->lock); 662229997Sken 663287499Smav retval = ctl_add_lun(&be_lun->cbe_lun); 664229997Sken if (retval != 0) { 665229997Sken mtx_lock(&softc->lock); 666229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_ramdisk_lun, 667229997Sken links); 668229997Sken softc->num_luns--; 669229997Sken mtx_unlock(&softc->lock); 670229997Sken snprintf(req->error_str, sizeof(req->error_str), 671229997Sken "%s: ctl_add_lun() returned error %d, see dmesg for " 672229997Sken "details", __func__, retval); 673229997Sken retval = 0; 674229997Sken goto bailout_error; 675229997Sken } 676229997Sken 677229997Sken mtx_lock(&softc->lock); 678229997Sken 679229997Sken /* 680229997Sken * Tell the config_status routine that we're waiting so it won't 681229997Sken * clean up the LUN in the event of an error. 682229997Sken */ 683229997Sken be_lun->flags |= CTL_BE_RAMDISK_LUN_WAITING; 684229997Sken 685229997Sken while (be_lun->flags & CTL_BE_RAMDISK_LUN_UNCONFIGURED) { 686229997Sken retval = msleep(be_lun, &softc->lock, PCATCH, "ctlram", 0); 687229997Sken if (retval == EINTR) 688229997Sken break; 689229997Sken } 690229997Sken be_lun->flags &= ~CTL_BE_RAMDISK_LUN_WAITING; 691229997Sken 692229997Sken if (be_lun->flags & CTL_BE_RAMDISK_LUN_CONFIG_ERR) { 693229997Sken snprintf(req->error_str, sizeof(req->error_str), 694229997Sken "%s: LUN configuration error, see dmesg for details", 695229997Sken __func__); 696229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_ramdisk_lun, 697229997Sken links); 698229997Sken softc->num_luns--; 699229997Sken mtx_unlock(&softc->lock); 700229997Sken goto bailout_error; 701229997Sken } else { 702287499Smav params->req_lun_id = cbe_lun->lun_id; 703229997Sken } 704229997Sken mtx_unlock(&softc->lock); 705229997Sken 706229997Sken req->status = CTL_LUN_OK; 707229997Sken 708229997Sken return (retval); 709229997Sken 710229997Skenbailout_error: 711229997Sken req->status = CTL_LUN_ERROR; 712264886Smav if (be_lun != NULL) { 713264886Smav if (be_lun->io_taskqueue != NULL) { 714264886Smav taskqueue_free(be_lun->io_taskqueue); 715264886Smav } 716287499Smav ctl_free_opts(&cbe_lun->options); 717267877Smav mtx_destroy(&be_lun->queue_lock); 718264886Smav free(be_lun, M_RAMDISK); 719264886Smav } 720229997Sken 721229997Sken return (retval); 722229997Sken} 723229997Sken 724232604Straszstatic int 725232604Straszctl_backend_ramdisk_modify(struct ctl_be_ramdisk_softc *softc, 726232604Strasz struct ctl_lun_req *req) 727232604Strasz{ 728232604Strasz struct ctl_be_ramdisk_lun *be_lun; 729287500Smav struct ctl_be_lun *cbe_lun; 730232604Strasz struct ctl_lun_modify_params *params; 731287621Smav char *value; 732232604Strasz uint32_t blocksize; 733287621Smav int wasprim; 734232604Strasz 735232604Strasz params = &req->reqdata.modify; 736232604Strasz 737232604Strasz mtx_lock(&softc->lock); 738232604Strasz STAILQ_FOREACH(be_lun, &softc->lun_list, links) { 739287499Smav if (be_lun->cbe_lun.lun_id == params->lun_id) 740232604Strasz break; 741232604Strasz } 742232604Strasz mtx_unlock(&softc->lock); 743232604Strasz 744232604Strasz if (be_lun == NULL) { 745232604Strasz snprintf(req->error_str, sizeof(req->error_str), 746232604Strasz "%s: LUN %u is not managed by the ramdisk backend", 747232604Strasz __func__, params->lun_id); 748232604Strasz goto bailout_error; 749232604Strasz } 750287500Smav cbe_lun = &be_lun->cbe_lun; 751232604Strasz 752287500Smav if (params->lun_size_bytes != 0) 753287500Smav be_lun->params.lun_size_bytes = params->lun_size_bytes; 754287500Smav ctl_update_opts(&cbe_lun->options, req->num_be_args, req->kern_be_args); 755287621Smav 756287621Smav wasprim = (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY); 757287621Smav value = ctl_get_opt(&cbe_lun->options, "ha_role"); 758287621Smav if (value != NULL) { 759287621Smav if (strcmp(value, "primary") == 0) 760287621Smav cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY; 761287621Smav else 762287621Smav cbe_lun->flags &= ~CTL_LUN_FLAG_PRIMARY; 763287621Smav } else if (control_softc->flags & CTL_FLAG_ACTIVE_SHELF) 764287621Smav cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY; 765287621Smav else 766287621Smav cbe_lun->flags &= ~CTL_LUN_FLAG_PRIMARY; 767287621Smav if (wasprim != (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY)) { 768287621Smav if (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY) 769287621Smav ctl_lun_primary(cbe_lun); 770287621Smav else 771287621Smav ctl_lun_secondary(cbe_lun); 772287621Smav } 773287621Smav 774287499Smav blocksize = be_lun->cbe_lun.blocksize; 775287500Smav if (be_lun->params.lun_size_bytes < blocksize) { 776232604Strasz snprintf(req->error_str, sizeof(req->error_str), 777232604Strasz "%s: LUN size %ju < blocksize %u", __func__, 778287500Smav be_lun->params.lun_size_bytes, blocksize); 779232604Strasz goto bailout_error; 780232604Strasz } 781287500Smav be_lun->size_blocks = be_lun->params.lun_size_bytes / blocksize; 782232604Strasz be_lun->size_bytes = be_lun->size_blocks * blocksize; 783287499Smav be_lun->cbe_lun.maxlba = be_lun->size_blocks - 1; 784287499Smav ctl_lun_capacity_changed(&be_lun->cbe_lun); 785232604Strasz 786232604Strasz /* Tell the user the exact size we ended up using */ 787232604Strasz params->lun_size_bytes = be_lun->size_bytes; 788232604Strasz 789232604Strasz req->status = CTL_LUN_OK; 790232604Strasz 791232604Strasz return (0); 792232604Strasz 793232604Straszbailout_error: 794232604Strasz req->status = CTL_LUN_ERROR; 795232604Strasz 796232604Strasz return (0); 797232604Strasz} 798232604Strasz 799229997Skenstatic void 800229997Skenctl_backend_ramdisk_lun_shutdown(void *be_lun) 801229997Sken{ 802229997Sken struct ctl_be_ramdisk_lun *lun; 803229997Sken struct ctl_be_ramdisk_softc *softc; 804229997Sken int do_free; 805229997Sken 806229997Sken lun = (struct ctl_be_ramdisk_lun *)be_lun; 807229997Sken softc = lun->softc; 808229997Sken do_free = 0; 809229997Sken 810229997Sken mtx_lock(&softc->lock); 811229997Sken 812229997Sken lun->flags |= CTL_BE_RAMDISK_LUN_UNCONFIGURED; 813229997Sken 814229997Sken if (lun->flags & CTL_BE_RAMDISK_LUN_WAITING) { 815229997Sken wakeup(lun); 816229997Sken } else { 817269058Smav STAILQ_REMOVE(&softc->lun_list, lun, ctl_be_ramdisk_lun, 818229997Sken links); 819229997Sken softc->num_luns--; 820229997Sken do_free = 1; 821229997Sken } 822229997Sken 823229997Sken mtx_unlock(&softc->lock); 824229997Sken 825229997Sken if (do_free != 0) 826229997Sken free(be_lun, M_RAMDISK); 827229997Sken} 828229997Sken 829229997Skenstatic void 830229997Skenctl_backend_ramdisk_lun_config_status(void *be_lun, 831229997Sken ctl_lun_config_status status) 832229997Sken{ 833229997Sken struct ctl_be_ramdisk_lun *lun; 834229997Sken struct ctl_be_ramdisk_softc *softc; 835229997Sken 836229997Sken lun = (struct ctl_be_ramdisk_lun *)be_lun; 837229997Sken softc = lun->softc; 838229997Sken 839229997Sken if (status == CTL_LUN_CONFIG_OK) { 840229997Sken mtx_lock(&softc->lock); 841229997Sken lun->flags &= ~CTL_BE_RAMDISK_LUN_UNCONFIGURED; 842229997Sken if (lun->flags & CTL_BE_RAMDISK_LUN_WAITING) 843229997Sken wakeup(lun); 844229997Sken mtx_unlock(&softc->lock); 845229997Sken 846229997Sken /* 847229997Sken * We successfully added the LUN, attempt to enable it. 848229997Sken */ 849287499Smav if (ctl_enable_lun(&lun->cbe_lun) != 0) { 850229997Sken printf("%s: ctl_enable_lun() failed!\n", __func__); 851287499Smav if (ctl_invalidate_lun(&lun->cbe_lun) != 0) { 852229997Sken printf("%s: ctl_invalidate_lun() failed!\n", 853229997Sken __func__); 854229997Sken } 855229997Sken } 856229997Sken 857229997Sken return; 858229997Sken } 859229997Sken 860229997Sken 861229997Sken mtx_lock(&softc->lock); 862229997Sken lun->flags &= ~CTL_BE_RAMDISK_LUN_UNCONFIGURED; 863229997Sken 864229997Sken /* 865229997Sken * If we have a user waiting, let him handle the cleanup. If not, 866229997Sken * clean things up here. 867229997Sken */ 868229997Sken if (lun->flags & CTL_BE_RAMDISK_LUN_WAITING) { 869229997Sken lun->flags |= CTL_BE_RAMDISK_LUN_CONFIG_ERR; 870229997Sken wakeup(lun); 871229997Sken } else { 872229997Sken STAILQ_REMOVE(&softc->lun_list, lun, ctl_be_ramdisk_lun, 873229997Sken links); 874229997Sken softc->num_luns--; 875229997Sken free(lun, M_RAMDISK); 876229997Sken } 877229997Sken mtx_unlock(&softc->lock); 878229997Sken} 879229997Sken 880229997Skenstatic int 881229997Skenctl_backend_ramdisk_config_write(union ctl_io *io) 882229997Sken{ 883229997Sken struct ctl_be_ramdisk_softc *softc; 884229997Sken int retval; 885229997Sken 886229997Sken retval = 0; 887229997Sken softc = &rd_softc; 888229997Sken 889229997Sken switch (io->scsiio.cdb[0]) { 890229997Sken case SYNCHRONIZE_CACHE: 891229997Sken case SYNCHRONIZE_CACHE_16: 892229997Sken /* 893229997Sken * The upper level CTL code will filter out any CDBs with 894229997Sken * the immediate bit set and return the proper error. It 895229997Sken * will also not allow a sync cache command to go to a LUN 896229997Sken * that is powered down. 897229997Sken * 898229997Sken * We don't really need to worry about what LBA range the 899229997Sken * user asked to be synced out. When they issue a sync 900229997Sken * cache command, we'll sync out the whole thing. 901229997Sken * 902229997Sken * This is obviously just a stubbed out implementation. 903229997Sken * The real implementation will be in the RAIDCore/CTL 904229997Sken * interface, and can only really happen when RAIDCore 905229997Sken * implements a per-array cache sync. 906229997Sken */ 907229997Sken ctl_set_success(&io->scsiio); 908229997Sken ctl_config_write_done(io); 909229997Sken break; 910229997Sken case START_STOP_UNIT: { 911229997Sken struct scsi_start_stop_unit *cdb; 912287499Smav struct ctl_be_lun *cbe_lun; 913229997Sken struct ctl_be_ramdisk_lun *be_lun; 914229997Sken 915229997Sken cdb = (struct scsi_start_stop_unit *)io->scsiio.cdb; 916229997Sken 917287499Smav cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 918229997Sken CTL_PRIV_BACKEND_LUN].ptr; 919287499Smav be_lun = (struct ctl_be_ramdisk_lun *)cbe_lun->be_lun; 920229997Sken 921229997Sken if (cdb->how & SSS_START) 922287499Smav retval = ctl_start_lun(cbe_lun); 923229997Sken else { 924287499Smav retval = ctl_stop_lun(cbe_lun); 925229997Sken#ifdef NEEDTOPORT 926229997Sken if ((retval == 0) 927229997Sken && (cdb->byte2 & SSS_ONOFFLINE)) 928287499Smav retval = ctl_lun_offline(cbe_lun); 929229997Sken#endif 930229997Sken } 931229997Sken 932229997Sken /* 933229997Sken * In general, the above routines should not fail. They 934229997Sken * just set state for the LUN. So we've got something 935229997Sken * pretty wrong here if we can't start or stop the LUN. 936229997Sken */ 937229997Sken if (retval != 0) { 938229997Sken ctl_set_internal_failure(&io->scsiio, 939229997Sken /*sks_valid*/ 1, 940229997Sken /*retry_count*/ 0xf051); 941229997Sken retval = CTL_RETVAL_COMPLETE; 942229997Sken } else { 943229997Sken ctl_set_success(&io->scsiio); 944229997Sken } 945229997Sken ctl_config_write_done(io); 946229997Sken break; 947229997Sken } 948264274Smav case WRITE_SAME_10: 949264274Smav case WRITE_SAME_16: 950264274Smav case UNMAP: 951264274Smav ctl_set_success(&io->scsiio); 952264274Smav ctl_config_write_done(io); 953264274Smav break; 954229997Sken default: 955229997Sken ctl_set_invalid_opcode(&io->scsiio); 956229997Sken ctl_config_write_done(io); 957229997Sken retval = CTL_RETVAL_COMPLETE; 958229997Sken break; 959229997Sken } 960229997Sken 961229997Sken return (retval); 962229997Sken} 963229997Sken 964229997Skenstatic int 965229997Skenctl_backend_ramdisk_config_read(union ctl_io *io) 966229997Sken{ 967275474Smav int retval = 0; 968275474Smav 969275474Smav switch (io->scsiio.cdb[0]) { 970275474Smav case SERVICE_ACTION_IN: 971275474Smav if (io->scsiio.cdb[1] == SGLS_SERVICE_ACTION) { 972275474Smav /* We have nothing to tell, leave default data. */ 973275474Smav ctl_config_read_done(io); 974275474Smav retval = CTL_RETVAL_COMPLETE; 975275474Smav break; 976275474Smav } 977275474Smav ctl_set_invalid_field(&io->scsiio, 978275474Smav /*sks_valid*/ 1, 979275474Smav /*command*/ 1, 980275474Smav /*field*/ 1, 981275474Smav /*bit_valid*/ 1, 982275474Smav /*bit*/ 4); 983275474Smav ctl_config_read_done(io); 984275474Smav retval = CTL_RETVAL_COMPLETE; 985275474Smav break; 986275474Smav default: 987275474Smav ctl_set_invalid_opcode(&io->scsiio); 988275474Smav ctl_config_read_done(io); 989275474Smav retval = CTL_RETVAL_COMPLETE; 990275474Smav break; 991275474Smav } 992275474Smav 993275474Smav return (retval); 994229997Sken} 995