1898b0535SWarner Losh /*- 24d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 3bec9534dSPedro F. Giffuni * 43393f8daSKenneth D. Merry * Copyright (c) 1997, 1998, 2000 Justin T. Gibbs. 52a888f93SKenneth D. Merry * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry. 676babe50SJustin T. Gibbs * All rights reserved. 776babe50SJustin T. Gibbs * 876babe50SJustin T. Gibbs * Redistribution and use in source and binary forms, with or without 976babe50SJustin T. Gibbs * modification, are permitted provided that the following conditions 1076babe50SJustin T. Gibbs * are met: 1176babe50SJustin T. Gibbs * 1. Redistributions of source code must retain the above copyright 1276babe50SJustin T. Gibbs * notice, this list of conditions, and the following disclaimer, 1376babe50SJustin T. Gibbs * without modification, immediately at the beginning of the file. 1476babe50SJustin T. Gibbs * 2. The name of the author may not be used to endorse or promote products 1576babe50SJustin T. Gibbs * derived from this software without specific prior written permission. 1676babe50SJustin T. Gibbs * 1776babe50SJustin T. Gibbs * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1876babe50SJustin T. Gibbs * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1976babe50SJustin T. Gibbs * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2076babe50SJustin T. Gibbs * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 2176babe50SJustin T. Gibbs * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2276babe50SJustin T. Gibbs * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2376babe50SJustin T. Gibbs * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2476babe50SJustin T. Gibbs * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2576babe50SJustin T. Gibbs * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2676babe50SJustin T. Gibbs * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2776babe50SJustin T. Gibbs * SUCH DAMAGE. 2876babe50SJustin T. Gibbs */ 2976babe50SJustin T. Gibbs 3076babe50SJustin T. Gibbs #include <sys/param.h> 3176babe50SJustin T. Gibbs #include <sys/systm.h> 3276babe50SJustin T. Gibbs #include <sys/kernel.h> 33a9934668SKenneth D. Merry #include <sys/conf.h> 3476babe50SJustin T. Gibbs #include <sys/types.h> 359626b608SPoul-Henning Kamp #include <sys/bio.h> 36a9934668SKenneth D. Merry #include <sys/bus.h> 3776babe50SJustin T. Gibbs #include <sys/devicestat.h> 38a9934668SKenneth D. Merry #include <sys/errno.h> 39a9934668SKenneth D. Merry #include <sys/fcntl.h> 40a9934668SKenneth D. Merry #include <sys/malloc.h> 41f7312ca2SRobert Watson #include <sys/proc.h> 42a9934668SKenneth D. Merry #include <sys/poll.h> 43a9934668SKenneth D. Merry #include <sys/selinfo.h> 44a9934668SKenneth D. Merry #include <sys/sdt.h> 45871dc983SBrooks Davis #include <sys/sysent.h> 46416494d7SJustin T. Gibbs #include <sys/taskqueue.h> 47a9934668SKenneth D. Merry #include <vm/uma.h> 48a9934668SKenneth D. Merry #include <vm/vm.h> 49a9934668SKenneth D. Merry #include <vm/vm_extern.h> 50a9934668SKenneth D. Merry 51a9934668SKenneth D. Merry #include <machine/bus.h> 5276babe50SJustin T. Gibbs 5376babe50SJustin T. Gibbs #include <cam/cam.h> 5476babe50SJustin T. Gibbs #include <cam/cam_ccb.h> 5576babe50SJustin T. Gibbs #include <cam/cam_periph.h> 563393f8daSKenneth D. Merry #include <cam/cam_queue.h> 57a9934668SKenneth D. Merry #include <cam/cam_xpt.h> 5876babe50SJustin T. Gibbs #include <cam/cam_xpt_periph.h> 5976babe50SJustin T. Gibbs #include <cam/cam_debug.h> 6025a2902cSScott Long #include <cam/cam_compat.h> 61a9934668SKenneth D. Merry #include <cam/cam_xpt_periph.h> 6276babe50SJustin T. Gibbs 6376babe50SJustin T. Gibbs #include <cam/scsi/scsi_all.h> 6476babe50SJustin T. Gibbs #include <cam/scsi/scsi_pass.h> 6576babe50SJustin T. Gibbs 6676babe50SJustin T. Gibbs typedef enum { 6776babe50SJustin T. Gibbs PASS_FLAG_OPEN = 0x01, 6876babe50SJustin T. Gibbs PASS_FLAG_LOCKED = 0x02, 69ea37f519SKenneth D. Merry PASS_FLAG_INVALID = 0x04, 70a9934668SKenneth D. Merry PASS_FLAG_INITIAL_PHYSPATH = 0x08, 71a9934668SKenneth D. Merry PASS_FLAG_ZONE_INPROG = 0x10, 72a9934668SKenneth D. Merry PASS_FLAG_ZONE_VALID = 0x20, 73a9934668SKenneth D. Merry PASS_FLAG_UNMAPPED_CAPABLE = 0x40, 74a9934668SKenneth D. Merry PASS_FLAG_ABANDONED_REF_SET = 0x80 7576babe50SJustin T. Gibbs } pass_flags; 7676babe50SJustin T. Gibbs 7776babe50SJustin T. Gibbs typedef enum { 7876babe50SJustin T. Gibbs PASS_STATE_NORMAL 7976babe50SJustin T. Gibbs } pass_state; 8076babe50SJustin T. Gibbs 8176babe50SJustin T. Gibbs typedef enum { 82a9934668SKenneth D. Merry PASS_CCB_BUFFER_IO, 83a9934668SKenneth D. Merry PASS_CCB_QUEUED_IO 8476babe50SJustin T. Gibbs } pass_ccb_types; 8576babe50SJustin T. Gibbs 8676babe50SJustin T. Gibbs #define ccb_type ppriv_field0 87a9934668SKenneth D. Merry #define ccb_ioreq ppriv_ptr1 88a9934668SKenneth D. Merry 89a9934668SKenneth D. Merry /* 90a9934668SKenneth D. Merry * The maximum number of memory segments we preallocate. 91a9934668SKenneth D. Merry */ 92a9934668SKenneth D. Merry #define PASS_MAX_SEGS 16 93a9934668SKenneth D. Merry 94a9934668SKenneth D. Merry typedef enum { 95a9934668SKenneth D. Merry PASS_IO_NONE = 0x00, 96a9934668SKenneth D. Merry PASS_IO_USER_SEG_MALLOC = 0x01, 97a9934668SKenneth D. Merry PASS_IO_KERN_SEG_MALLOC = 0x02, 98a9934668SKenneth D. Merry PASS_IO_ABANDONED = 0x04 99a9934668SKenneth D. Merry } pass_io_flags; 100a9934668SKenneth D. Merry 101a9934668SKenneth D. Merry struct pass_io_req { 102a9934668SKenneth D. Merry union ccb ccb; 103a9934668SKenneth D. Merry union ccb *alloced_ccb; 104a9934668SKenneth D. Merry union ccb *user_ccb_ptr; 105a9934668SKenneth D. Merry camq_entry user_periph_links; 106a9934668SKenneth D. Merry ccb_ppriv_area user_periph_priv; 107a9934668SKenneth D. Merry struct cam_periph_map_info mapinfo; 108a9934668SKenneth D. Merry pass_io_flags flags; 109a9934668SKenneth D. Merry ccb_flags data_flags; 110a9934668SKenneth D. Merry int num_user_segs; 111a9934668SKenneth D. Merry bus_dma_segment_t user_segs[PASS_MAX_SEGS]; 112a9934668SKenneth D. Merry int num_kern_segs; 113a9934668SKenneth D. Merry bus_dma_segment_t kern_segs[PASS_MAX_SEGS]; 114a9934668SKenneth D. Merry bus_dma_segment_t *user_segptr; 115a9934668SKenneth D. Merry bus_dma_segment_t *kern_segptr; 116a9934668SKenneth D. Merry int num_bufs; 117a9934668SKenneth D. Merry uint32_t dirs[CAM_PERIPH_MAXMAPS]; 118a9934668SKenneth D. Merry uint32_t lengths[CAM_PERIPH_MAXMAPS]; 119a9934668SKenneth D. Merry uint8_t *user_bufs[CAM_PERIPH_MAXMAPS]; 120a9934668SKenneth D. Merry uint8_t *kern_bufs[CAM_PERIPH_MAXMAPS]; 121a9934668SKenneth D. Merry struct bintime start_time; 122a9934668SKenneth D. Merry TAILQ_ENTRY(pass_io_req) links; 123a9934668SKenneth D. Merry }; 12476babe50SJustin T. Gibbs 12576babe50SJustin T. Gibbs struct pass_softc { 12676babe50SJustin T. Gibbs pass_state state; 12776babe50SJustin T. Gibbs pass_flags flags; 1287c5d20a6SWarner Losh uint8_t pd_type; 12986d45c7fSKenneth D. Merry int open_count; 130de239312SAlexander Motin u_int maxio; 131a9d2245eSPoul-Henning Kamp struct devstat *device_stats; 13289c9c53dSPoul-Henning Kamp struct cdev *dev; 133416494d7SJustin T. Gibbs struct cdev *alias_dev; 134416494d7SJustin T. Gibbs struct task add_physpath_task; 135a9934668SKenneth D. Merry struct task shutdown_kqueue_task; 136a9934668SKenneth D. Merry struct selinfo read_select; 137a9934668SKenneth D. Merry TAILQ_HEAD(, pass_io_req) incoming_queue; 138a9934668SKenneth D. Merry TAILQ_HEAD(, pass_io_req) active_queue; 139a9934668SKenneth D. Merry TAILQ_HEAD(, pass_io_req) abandoned_queue; 140a9934668SKenneth D. Merry TAILQ_HEAD(, pass_io_req) done_queue; 141a9934668SKenneth D. Merry struct cam_periph *periph; 142a9934668SKenneth D. Merry char zone_name[12]; 143a9934668SKenneth D. Merry char io_zone_name[12]; 144a9934668SKenneth D. Merry uma_zone_t pass_zone; 145a9934668SKenneth D. Merry uma_zone_t pass_io_zone; 146a9934668SKenneth D. Merry size_t io_zone_size; 14776babe50SJustin T. Gibbs }; 14876babe50SJustin T. Gibbs 14976babe50SJustin T. Gibbs static d_open_t passopen; 15076babe50SJustin T. Gibbs static d_close_t passclose; 15176babe50SJustin T. Gibbs static d_ioctl_t passioctl; 15225a2902cSScott Long static d_ioctl_t passdoioctl; 153a9934668SKenneth D. Merry static d_poll_t passpoll; 154a9934668SKenneth D. Merry static d_kqfilter_t passkqfilter; 155a9934668SKenneth D. Merry static void passreadfiltdetach(struct knote *kn); 156a9934668SKenneth D. Merry static int passreadfilt(struct knote *kn, long hint); 15776babe50SJustin T. Gibbs 15876babe50SJustin T. Gibbs static periph_init_t passinit; 15976babe50SJustin T. Gibbs static periph_ctor_t passregister; 160ee9c90c7SKenneth D. Merry static periph_oninv_t passoninvalidate; 16176babe50SJustin T. Gibbs static periph_dtor_t passcleanup; 162a9934668SKenneth D. Merry static periph_start_t passstart; 163a9934668SKenneth D. Merry static void pass_shutdown_kqueue(void *context, int pending); 164416494d7SJustin T. Gibbs static void pass_add_physpath(void *context, int pending); 1657c5d20a6SWarner Losh static void passasync(void *callback_arg, uint32_t code, 16676babe50SJustin T. Gibbs struct cam_path *path, void *arg); 167a9934668SKenneth D. Merry static void passdone(struct cam_periph *periph, 168a9934668SKenneth D. Merry union ccb *done_ccb); 169a9934668SKenneth D. Merry static int passcreatezone(struct cam_periph *periph); 170a9934668SKenneth D. Merry static void passiocleanup(struct pass_softc *softc, 171a9934668SKenneth D. Merry struct pass_io_req *io_req); 172a9934668SKenneth D. Merry static int passcopysglist(struct cam_periph *periph, 173a9934668SKenneth D. Merry struct pass_io_req *io_req, 174a9934668SKenneth D. Merry ccb_flags direction); 175a9934668SKenneth D. Merry static int passmemsetup(struct cam_periph *periph, 176a9934668SKenneth D. Merry struct pass_io_req *io_req); 177a9934668SKenneth D. Merry static int passmemdone(struct cam_periph *periph, 178a9934668SKenneth D. Merry struct pass_io_req *io_req); 1797c5d20a6SWarner Losh static int passerror(union ccb *ccb, uint32_t cam_flags, 1807c5d20a6SWarner Losh uint32_t sense_flags); 18176babe50SJustin T. Gibbs static int passsendccb(struct cam_periph *periph, union ccb *ccb, 18276babe50SJustin T. Gibbs union ccb *inccb); 183e474a8e2SWarner Losh static void passflags(union ccb *ccb, uint32_t *cam_flags, 184e474a8e2SWarner Losh uint32_t *sense_flags); 18576babe50SJustin T. Gibbs 18676babe50SJustin T. Gibbs static struct periph_driver passdriver = 18776babe50SJustin T. Gibbs { 18876babe50SJustin T. Gibbs passinit, "pass", 18976babe50SJustin T. Gibbs TAILQ_HEAD_INITIALIZER(passdriver.units), /* generation */ 0 19076babe50SJustin T. Gibbs }; 19176babe50SJustin T. Gibbs 1920b7c27b9SPeter Wemm PERIPHDRIVER_DECLARE(pass, passdriver); 19376babe50SJustin T. Gibbs 1944e2f199eSPoul-Henning Kamp static struct cdevsw pass_cdevsw = { 195dc08ffecSPoul-Henning Kamp .d_version = D_VERSION, 196c552ebe1SKenneth D. Merry .d_flags = D_TRACKCLOSE, 1977ac40f5fSPoul-Henning Kamp .d_open = passopen, 1987ac40f5fSPoul-Henning Kamp .d_close = passclose, 1997ac40f5fSPoul-Henning Kamp .d_ioctl = passioctl, 200a9934668SKenneth D. Merry .d_poll = passpoll, 201a9934668SKenneth D. Merry .d_kqfilter = passkqfilter, 2027ac40f5fSPoul-Henning Kamp .d_name = "pass", 20376babe50SJustin T. Gibbs }; 20476babe50SJustin T. Gibbs 205a9934668SKenneth D. Merry static struct filterops passread_filtops = { 206a9934668SKenneth D. Merry .f_isfd = 1, 207a9934668SKenneth D. Merry .f_detach = passreadfiltdetach, 208a9934668SKenneth D. Merry .f_event = passreadfilt 209a9934668SKenneth D. Merry }; 210a9934668SKenneth D. Merry 211a9934668SKenneth D. Merry static MALLOC_DEFINE(M_SCSIPASS, "scsi_pass", "scsi passthrough buffers"); 212a9934668SKenneth D. Merry 21376babe50SJustin T. Gibbs static void 21476babe50SJustin T. Gibbs passinit(void) 21576babe50SJustin T. Gibbs { 21676babe50SJustin T. Gibbs cam_status status; 21776babe50SJustin T. Gibbs 21876babe50SJustin T. Gibbs /* 21976babe50SJustin T. Gibbs * Install a global async callback. This callback will 22076babe50SJustin T. Gibbs * receive async callbacks like "new device found". 22176babe50SJustin T. Gibbs */ 22285d92640SScott Long status = xpt_register_async(AC_FOUND_DEVICE, passasync, NULL, NULL); 22376babe50SJustin T. Gibbs 22476babe50SJustin T. Gibbs if (status != CAM_REQ_CMP) { 22576babe50SJustin T. Gibbs printf("pass: Failed to attach master async callback " 22676babe50SJustin T. Gibbs "due to status 0x%x!\n", status); 22776babe50SJustin T. Gibbs } 22876babe50SJustin T. Gibbs 22976babe50SJustin T. Gibbs } 23076babe50SJustin T. Gibbs 23176babe50SJustin T. Gibbs static void 232a9934668SKenneth D. Merry passrejectios(struct cam_periph *periph) 233a9934668SKenneth D. Merry { 234a9934668SKenneth D. Merry struct pass_io_req *io_req, *io_req2; 235a9934668SKenneth D. Merry struct pass_softc *softc; 236a9934668SKenneth D. Merry 237a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 238a9934668SKenneth D. Merry 239a9934668SKenneth D. Merry /* 240a9934668SKenneth D. Merry * The user can no longer get status for I/O on the done queue, so 241a9934668SKenneth D. Merry * clean up all outstanding I/O on the done queue. 242a9934668SKenneth D. Merry */ 243a9934668SKenneth D. Merry TAILQ_FOREACH_SAFE(io_req, &softc->done_queue, links, io_req2) { 244a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->done_queue, io_req, links); 245a9934668SKenneth D. Merry passiocleanup(softc, io_req); 246a9934668SKenneth D. Merry uma_zfree(softc->pass_zone, io_req); 247a9934668SKenneth D. Merry } 248a9934668SKenneth D. Merry 249a9934668SKenneth D. Merry /* 250a9934668SKenneth D. Merry * The underlying device is gone, so we can't issue these I/Os. 251a9934668SKenneth D. Merry * The devfs node has been shut down, so we can't return status to 252a9934668SKenneth D. Merry * the user. Free any I/O left on the incoming queue. 253a9934668SKenneth D. Merry */ 254a9934668SKenneth D. Merry TAILQ_FOREACH_SAFE(io_req, &softc->incoming_queue, links, io_req2) { 255a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->incoming_queue, io_req, links); 256a9934668SKenneth D. Merry passiocleanup(softc, io_req); 257a9934668SKenneth D. Merry uma_zfree(softc->pass_zone, io_req); 258a9934668SKenneth D. Merry } 259a9934668SKenneth D. Merry 260a9934668SKenneth D. Merry /* 261a9934668SKenneth D. Merry * Normally we would put I/Os on the abandoned queue and acquire a 262a9934668SKenneth D. Merry * reference when we saw the final close. But, the device went 263a9934668SKenneth D. Merry * away and devfs may have moved everything off to deadfs by the 264a9934668SKenneth D. Merry * time the I/O done callback is called; as a result, we won't see 265a9934668SKenneth D. Merry * any more closes. So, if we have any active I/Os, we need to put 266a9934668SKenneth D. Merry * them on the abandoned queue. When the abandoned queue is empty, 267a9934668SKenneth D. Merry * we'll release the remaining reference (see below) to the peripheral. 268a9934668SKenneth D. Merry */ 269a9934668SKenneth D. Merry TAILQ_FOREACH_SAFE(io_req, &softc->active_queue, links, io_req2) { 270a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->active_queue, io_req, links); 271a9934668SKenneth D. Merry io_req->flags |= PASS_IO_ABANDONED; 272a9934668SKenneth D. Merry TAILQ_INSERT_TAIL(&softc->abandoned_queue, io_req, links); 273a9934668SKenneth D. Merry } 274a9934668SKenneth D. Merry 275a9934668SKenneth D. Merry /* 276a9934668SKenneth D. Merry * If we put any I/O on the abandoned queue, acquire a reference. 277a9934668SKenneth D. Merry */ 278a9934668SKenneth D. Merry if ((!TAILQ_EMPTY(&softc->abandoned_queue)) 279a9934668SKenneth D. Merry && ((softc->flags & PASS_FLAG_ABANDONED_REF_SET) == 0)) { 280a9934668SKenneth D. Merry cam_periph_doacquire(periph); 281a9934668SKenneth D. Merry softc->flags |= PASS_FLAG_ABANDONED_REF_SET; 282a9934668SKenneth D. Merry } 283a9934668SKenneth D. Merry } 284a9934668SKenneth D. Merry 285a9934668SKenneth D. Merry static void 286ea37f519SKenneth D. Merry passdevgonecb(void *arg) 287ea37f519SKenneth D. Merry { 288ea37f519SKenneth D. Merry struct cam_periph *periph; 289227d67aaSAlexander Motin struct mtx *mtx; 29086d45c7fSKenneth D. Merry struct pass_softc *softc; 29186d45c7fSKenneth D. Merry int i; 292ea37f519SKenneth D. Merry 293ea37f519SKenneth D. Merry periph = (struct cam_periph *)arg; 294227d67aaSAlexander Motin mtx = cam_periph_mtx(periph); 295227d67aaSAlexander Motin mtx_lock(mtx); 296ea37f519SKenneth D. Merry 297227d67aaSAlexander Motin softc = (struct pass_softc *)periph->softc; 29886d45c7fSKenneth D. Merry KASSERT(softc->open_count >= 0, ("Negative open count %d", 29986d45c7fSKenneth D. Merry softc->open_count)); 30086d45c7fSKenneth D. Merry 30186d45c7fSKenneth D. Merry /* 30286d45c7fSKenneth D. Merry * When we get this callback, we will get no more close calls from 30386d45c7fSKenneth D. Merry * devfs. So if we have any dangling opens, we need to release the 30486d45c7fSKenneth D. Merry * reference held for that particular context. 30586d45c7fSKenneth D. Merry */ 30686d45c7fSKenneth D. Merry for (i = 0; i < softc->open_count; i++) 30786d45c7fSKenneth D. Merry cam_periph_release_locked(periph); 30886d45c7fSKenneth D. Merry 30986d45c7fSKenneth D. Merry softc->open_count = 0; 31086d45c7fSKenneth D. Merry 31186d45c7fSKenneth D. Merry /* 31286d45c7fSKenneth D. Merry * Release the reference held for the device node, it is gone now. 313a9934668SKenneth D. Merry * Accordingly, inform all queued I/Os of their fate. 31486d45c7fSKenneth D. Merry */ 31586d45c7fSKenneth D. Merry cam_periph_release_locked(periph); 316a9934668SKenneth D. Merry passrejectios(periph); 31786d45c7fSKenneth D. Merry 31886d45c7fSKenneth D. Merry /* 319a9934668SKenneth D. Merry * We reference the SIM lock directly here, instead of using 32086d45c7fSKenneth D. Merry * cam_periph_unlock(). The reason is that the final call to 32186d45c7fSKenneth D. Merry * cam_periph_release_locked() above could result in the periph 32286d45c7fSKenneth D. Merry * getting freed. If that is the case, dereferencing the periph 32386d45c7fSKenneth D. Merry * with a cam_periph_unlock() call would cause a page fault. 32486d45c7fSKenneth D. Merry */ 325227d67aaSAlexander Motin mtx_unlock(mtx); 326a9934668SKenneth D. Merry 327a9934668SKenneth D. Merry /* 328a9934668SKenneth D. Merry * We have to remove our kqueue context from a thread because it 329a9934668SKenneth D. Merry * may sleep. It would be nice if we could get a callback from 330a9934668SKenneth D. Merry * kqueue when it is done cleaning up resources. 331a9934668SKenneth D. Merry */ 332a9934668SKenneth D. Merry taskqueue_enqueue(taskqueue_thread, &softc->shutdown_kqueue_task); 333ea37f519SKenneth D. Merry } 334ea37f519SKenneth D. Merry 335ea37f519SKenneth D. Merry static void 336ee9c90c7SKenneth D. Merry passoninvalidate(struct cam_periph *periph) 337ee9c90c7SKenneth D. Merry { 338ee9c90c7SKenneth D. Merry struct pass_softc *softc; 339ee9c90c7SKenneth D. Merry 340ee9c90c7SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 341ee9c90c7SKenneth D. Merry 342ee9c90c7SKenneth D. Merry /* 343ee9c90c7SKenneth D. Merry * De-register any async callbacks. 344ee9c90c7SKenneth D. Merry */ 34585d92640SScott Long xpt_register_async(0, passasync, periph, periph->path); 346ee9c90c7SKenneth D. Merry 347ee9c90c7SKenneth D. Merry softc->flags |= PASS_FLAG_INVALID; 348ee9c90c7SKenneth D. Merry 349ee9c90c7SKenneth D. Merry /* 350ea37f519SKenneth D. Merry * Tell devfs this device has gone away, and ask for a callback 351ea37f519SKenneth D. Merry * when it has cleaned up its state. 352ea37f519SKenneth D. Merry */ 353ea37f519SKenneth D. Merry destroy_dev_sched_cb(softc->dev, passdevgonecb, periph); 354ee9c90c7SKenneth D. Merry } 355ee9c90c7SKenneth D. Merry 356ee9c90c7SKenneth D. Merry static void 35776babe50SJustin T. Gibbs passcleanup(struct cam_periph *periph) 35876babe50SJustin T. Gibbs { 359ee9c90c7SKenneth D. Merry struct pass_softc *softc; 360ee9c90c7SKenneth D. Merry 361ee9c90c7SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 362ee9c90c7SKenneth D. Merry 363a9934668SKenneth D. Merry cam_periph_assert(periph, MA_OWNED); 364a9934668SKenneth D. Merry KASSERT(TAILQ_EMPTY(&softc->active_queue), 365a9934668SKenneth D. Merry ("%s called when there are commands on the active queue!\n", 366a9934668SKenneth D. Merry __func__)); 367a9934668SKenneth D. Merry KASSERT(TAILQ_EMPTY(&softc->abandoned_queue), 368a9934668SKenneth D. Merry ("%s called when there are commands on the abandoned queue!\n", 369a9934668SKenneth D. Merry __func__)); 370a9934668SKenneth D. Merry KASSERT(TAILQ_EMPTY(&softc->incoming_queue), 371a9934668SKenneth D. Merry ("%s called when there are commands on the incoming queue!\n", 372a9934668SKenneth D. Merry __func__)); 373a9934668SKenneth D. Merry KASSERT(TAILQ_EMPTY(&softc->done_queue), 374a9934668SKenneth D. Merry ("%s called when there are commands on the done queue!\n", 375a9934668SKenneth D. Merry __func__)); 376a9934668SKenneth D. Merry 3775f3fed85SEdward Tomasz Napierala devstat_remove_entry(softc->device_stats); 378416494d7SJustin T. Gibbs 3795f3fed85SEdward Tomasz Napierala cam_periph_unlock(periph); 380a9934668SKenneth D. Merry 381a9934668SKenneth D. Merry /* 382a9934668SKenneth D. Merry * We call taskqueue_drain() for the physpath task to make sure it 383a9934668SKenneth D. Merry * is complete. We drop the lock because this can potentially 384a9934668SKenneth D. Merry * sleep. XXX KDM that is bad. Need a way to get a callback when 385a9934668SKenneth D. Merry * a taskqueue is drained. 386a9934668SKenneth D. Merry * 387a9934668SKenneth D. Merry * Note that we don't drain the kqueue shutdown task queue. This 388a9934668SKenneth D. Merry * is because we hold a reference on the periph for kqueue, and 389a9934668SKenneth D. Merry * release that reference from the kqueue shutdown task queue. So 390a9934668SKenneth D. Merry * we cannot come into this routine unless we've released that 391a9934668SKenneth D. Merry * reference. Also, because that could be the last reference, we 392a9934668SKenneth D. Merry * could be called from the cam_periph_release() call in 393a9934668SKenneth D. Merry * pass_shutdown_kqueue(). In that case, the taskqueue_drain() 394a9934668SKenneth D. Merry * would deadlock. It would be preferable if we had a way to 395a9934668SKenneth D. Merry * get a callback when a taskqueue is done. 396a9934668SKenneth D. Merry */ 397416494d7SJustin T. Gibbs taskqueue_drain(taskqueue_thread, &softc->add_physpath_task); 398416494d7SJustin T. Gibbs 399ca2a7262SKenneth D. Merry /* 400ca2a7262SKenneth D. Merry * It should be safe to destroy the zones from here, because all 401ca2a7262SKenneth D. Merry * of the references to this peripheral have been freed, and all 402ca2a7262SKenneth D. Merry * I/O has been terminated and freed. We check the zones for NULL 403ca2a7262SKenneth D. Merry * because they may not have been allocated yet if the device went 404ca2a7262SKenneth D. Merry * away before any asynchronous I/O has been issued. 405ca2a7262SKenneth D. Merry */ 406ca2a7262SKenneth D. Merry if (softc->pass_zone != NULL) 407ca2a7262SKenneth D. Merry uma_zdestroy(softc->pass_zone); 408ca2a7262SKenneth D. Merry if (softc->pass_io_zone != NULL) 409ca2a7262SKenneth D. Merry uma_zdestroy(softc->pass_io_zone); 410ca2a7262SKenneth D. Merry 4115f3fed85SEdward Tomasz Napierala cam_periph_lock(periph); 412416494d7SJustin T. Gibbs 413ee9c90c7SKenneth D. Merry free(softc, M_DEVBUF); 41476babe50SJustin T. Gibbs } 41576babe50SJustin T. Gibbs 41676babe50SJustin T. Gibbs static void 417a9934668SKenneth D. Merry pass_shutdown_kqueue(void *context, int pending) 418a9934668SKenneth D. Merry { 419a9934668SKenneth D. Merry struct cam_periph *periph; 420a9934668SKenneth D. Merry struct pass_softc *softc; 421a9934668SKenneth D. Merry 422a9934668SKenneth D. Merry periph = context; 423a9934668SKenneth D. Merry softc = periph->softc; 424a9934668SKenneth D. Merry 425a9934668SKenneth D. Merry knlist_clear(&softc->read_select.si_note, /*is_locked*/ 0); 426a9934668SKenneth D. Merry knlist_destroy(&softc->read_select.si_note); 427a9934668SKenneth D. Merry 428a9934668SKenneth D. Merry /* 429a9934668SKenneth D. Merry * Release the reference we held for kqueue. 430a9934668SKenneth D. Merry */ 431a9934668SKenneth D. Merry cam_periph_release(periph); 432a9934668SKenneth D. Merry } 433a9934668SKenneth D. Merry 434a9934668SKenneth D. Merry static void 435416494d7SJustin T. Gibbs pass_add_physpath(void *context, int pending) 436416494d7SJustin T. Gibbs { 437416494d7SJustin T. Gibbs struct cam_periph *periph; 438416494d7SJustin T. Gibbs struct pass_softc *softc; 439a9934668SKenneth D. Merry struct mtx *mtx; 440416494d7SJustin T. Gibbs char *physpath; 441416494d7SJustin T. Gibbs 442416494d7SJustin T. Gibbs /* 443416494d7SJustin T. Gibbs * If we have one, create a devfs alias for our 444416494d7SJustin T. Gibbs * physical path. 445416494d7SJustin T. Gibbs */ 446416494d7SJustin T. Gibbs periph = context; 447416494d7SJustin T. Gibbs softc = periph->softc; 4486884b662SAlexander Motin physpath = malloc(MAXPATHLEN, M_DEVBUF, M_WAITOK); 449a9934668SKenneth D. Merry mtx = cam_periph_mtx(periph); 450a9934668SKenneth D. Merry mtx_lock(mtx); 451a9934668SKenneth D. Merry 452a9934668SKenneth D. Merry if (periph->flags & CAM_PERIPH_INVALID) 4536884b662SAlexander Motin goto out; 454a9934668SKenneth D. Merry 455416494d7SJustin T. Gibbs if (xpt_getattr(physpath, MAXPATHLEN, 456416494d7SJustin T. Gibbs "GEOM::physpath", periph->path) == 0 457416494d7SJustin T. Gibbs && strlen(physpath) != 0) { 458a9934668SKenneth D. Merry mtx_unlock(mtx); 4595f438dd3SAlan Somers make_dev_physpath_alias(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, 4605f438dd3SAlan Somers &softc->alias_dev, softc->dev, 4615f438dd3SAlan Somers softc->alias_dev, physpath); 462a9934668SKenneth D. Merry mtx_lock(mtx); 463416494d7SJustin T. Gibbs } 464ea37f519SKenneth D. Merry 465a9934668SKenneth D. Merry out: 466ea37f519SKenneth D. Merry /* 467ea37f519SKenneth D. Merry * Now that we've made our alias, we no longer have to have a 468ea37f519SKenneth D. Merry * reference to the device. 469ea37f519SKenneth D. Merry */ 470a9934668SKenneth D. Merry if ((softc->flags & PASS_FLAG_INITIAL_PHYSPATH) == 0) 471ea37f519SKenneth D. Merry softc->flags |= PASS_FLAG_INITIAL_PHYSPATH; 4726884b662SAlexander Motin 473a9934668SKenneth D. Merry /* 474a9934668SKenneth D. Merry * We always acquire a reference to the periph before queueing this 475a9934668SKenneth D. Merry * task queue function, so it won't go away before we run. 476a9934668SKenneth D. Merry */ 477a9934668SKenneth D. Merry while (pending-- > 0) 478a9934668SKenneth D. Merry cam_periph_release_locked(periph); 479a9934668SKenneth D. Merry mtx_unlock(mtx); 480a9934668SKenneth D. Merry 4816884b662SAlexander Motin free(physpath, M_DEVBUF); 482416494d7SJustin T. Gibbs } 483416494d7SJustin T. Gibbs 484416494d7SJustin T. Gibbs static void 4857c5d20a6SWarner Losh passasync(void *callback_arg, uint32_t code, 48676babe50SJustin T. Gibbs struct cam_path *path, void *arg) 48776babe50SJustin T. Gibbs { 48876babe50SJustin T. Gibbs struct cam_periph *periph; 48976babe50SJustin T. Gibbs 49076babe50SJustin T. Gibbs periph = (struct cam_periph *)callback_arg; 49176babe50SJustin T. Gibbs 49276babe50SJustin T. Gibbs switch (code) { 49376babe50SJustin T. Gibbs case AC_FOUND_DEVICE: 49476babe50SJustin T. Gibbs { 49576babe50SJustin T. Gibbs struct ccb_getdev *cgd; 49676babe50SJustin T. Gibbs cam_status status; 49776babe50SJustin T. Gibbs 49876babe50SJustin T. Gibbs cgd = (struct ccb_getdev *)arg; 499c5ff3b2fSMatt Jacob if (cgd == NULL) 500c5ff3b2fSMatt Jacob break; 50176babe50SJustin T. Gibbs 50276babe50SJustin T. Gibbs /* 50376babe50SJustin T. Gibbs * Allocate a peripheral instance for 50476babe50SJustin T. Gibbs * this device and start the probe 50576babe50SJustin T. Gibbs * process. 50676babe50SJustin T. Gibbs */ 507ee9c90c7SKenneth D. Merry status = cam_periph_alloc(passregister, passoninvalidate, 508a9934668SKenneth D. Merry passcleanup, passstart, "pass", 509227d67aaSAlexander Motin CAM_PERIPH_BIO, path, 510ee9c90c7SKenneth D. Merry passasync, AC_FOUND_DEVICE, cgd); 51176babe50SJustin T. Gibbs 51276babe50SJustin T. Gibbs if (status != CAM_REQ_CMP 5133393f8daSKenneth D. Merry && status != CAM_REQ_INPROG) { 5143393f8daSKenneth D. Merry const struct cam_status_entry *entry; 5153393f8daSKenneth D. Merry 5163393f8daSKenneth D. Merry entry = cam_fetch_status_entry(status); 5173393f8daSKenneth D. Merry 51876babe50SJustin T. Gibbs printf("passasync: Unable to attach new device " 5193393f8daSKenneth D. Merry "due to status %#x: %s\n", status, entry ? 5203393f8daSKenneth D. Merry entry->status_text : "Unknown"); 5213393f8daSKenneth D. Merry } 52276babe50SJustin T. Gibbs 52376babe50SJustin T. Gibbs break; 52476babe50SJustin T. Gibbs } 525416494d7SJustin T. Gibbs case AC_ADVINFO_CHANGED: 526416494d7SJustin T. Gibbs { 527416494d7SJustin T. Gibbs uintptr_t buftype; 528416494d7SJustin T. Gibbs 529416494d7SJustin T. Gibbs buftype = (uintptr_t)arg; 530416494d7SJustin T. Gibbs if (buftype == CDAI_TYPE_PHYS_PATH) { 531416494d7SJustin T. Gibbs struct pass_softc *softc; 532416494d7SJustin T. Gibbs 533416494d7SJustin T. Gibbs softc = (struct pass_softc *)periph->softc; 534a9934668SKenneth D. Merry /* 535a9934668SKenneth D. Merry * Acquire a reference to the periph before we 536a9934668SKenneth D. Merry * start the taskqueue, so that we don't run into 537a9934668SKenneth D. Merry * a situation where the periph goes away before 538a9934668SKenneth D. Merry * the task queue has a chance to run. 539a9934668SKenneth D. Merry */ 54099e7a4adSScott Long if (cam_periph_acquire(periph) != 0) 541a9934668SKenneth D. Merry break; 542a9934668SKenneth D. Merry 543416494d7SJustin T. Gibbs taskqueue_enqueue(taskqueue_thread, 544416494d7SJustin T. Gibbs &softc->add_physpath_task); 545416494d7SJustin T. Gibbs } 546416494d7SJustin T. Gibbs break; 547416494d7SJustin T. Gibbs } 54876babe50SJustin T. Gibbs default: 549516871c6SJustin T. Gibbs cam_periph_async(periph, code, path, arg); 55076babe50SJustin T. Gibbs break; 55176babe50SJustin T. Gibbs } 55276babe50SJustin T. Gibbs } 55376babe50SJustin T. Gibbs 55476babe50SJustin T. Gibbs static cam_status 55576babe50SJustin T. Gibbs passregister(struct cam_periph *periph, void *arg) 55676babe50SJustin T. Gibbs { 55776babe50SJustin T. Gibbs struct pass_softc *softc; 55876babe50SJustin T. Gibbs struct ccb_getdev *cgd; 559b8b6b5d3SAlexander Motin struct ccb_pathinq cpi; 560ee198893SKonstantin Belousov struct make_dev_args args; 561ee198893SKonstantin Belousov int error, no_tags; 56276babe50SJustin T. Gibbs 56376babe50SJustin T. Gibbs cgd = (struct ccb_getdev *)arg; 56476babe50SJustin T. Gibbs if (cgd == NULL) { 565ea37f519SKenneth D. Merry printf("%s: no getdev CCB, can't register device\n", __func__); 56676babe50SJustin T. Gibbs return(CAM_REQ_CMP_ERR); 56776babe50SJustin T. Gibbs } 56876babe50SJustin T. Gibbs 56976babe50SJustin T. Gibbs softc = (struct pass_softc *)malloc(sizeof(*softc), 57076babe50SJustin T. Gibbs M_DEVBUF, M_NOWAIT); 57176babe50SJustin T. Gibbs 57276babe50SJustin T. Gibbs if (softc == NULL) { 573ea37f519SKenneth D. Merry printf("%s: Unable to probe new device. " 574ea37f519SKenneth D. Merry "Unable to allocate softc\n", __func__); 57576babe50SJustin T. Gibbs return(CAM_REQ_CMP_ERR); 57676babe50SJustin T. Gibbs } 57776babe50SJustin T. Gibbs 57876babe50SJustin T. Gibbs bzero(softc, sizeof(*softc)); 57976babe50SJustin T. Gibbs softc->state = PASS_STATE_NORMAL; 580b8b6b5d3SAlexander Motin if (cgd->protocol == PROTO_SCSI || cgd->protocol == PROTO_ATAPI) 58110b6172aSMatt Jacob softc->pd_type = SID_TYPE(&cgd->inq_data); 582b8b6b5d3SAlexander Motin else if (cgd->protocol == PROTO_SATAPM) 583b8b6b5d3SAlexander Motin softc->pd_type = T_ENCLOSURE; 584b8b6b5d3SAlexander Motin else 585b8b6b5d3SAlexander Motin softc->pd_type = T_DIRECT; 58676babe50SJustin T. Gibbs 58776babe50SJustin T. Gibbs periph->softc = softc; 588a9934668SKenneth D. Merry softc->periph = periph; 589a9934668SKenneth D. Merry TAILQ_INIT(&softc->incoming_queue); 590a9934668SKenneth D. Merry TAILQ_INIT(&softc->active_queue); 591a9934668SKenneth D. Merry TAILQ_INIT(&softc->abandoned_queue); 592a9934668SKenneth D. Merry TAILQ_INIT(&softc->done_queue); 593a9934668SKenneth D. Merry snprintf(softc->zone_name, sizeof(softc->zone_name), "%s%d", 594a9934668SKenneth D. Merry periph->periph_name, periph->unit_number); 595a9934668SKenneth D. Merry snprintf(softc->io_zone_name, sizeof(softc->io_zone_name), "%s%dIO", 596a9934668SKenneth D. Merry periph->periph_name, periph->unit_number); 597cd853791SKonstantin Belousov softc->io_zone_size = maxphys; 598a9934668SKenneth D. Merry knlist_init_mtx(&softc->read_select.si_note, cam_periph_mtx(periph)); 5993393f8daSKenneth D. Merry 600762a7f4fSWarner Losh xpt_path_inq(&cpi, periph->path); 601b8b6b5d3SAlexander Motin 602de239312SAlexander Motin if (cpi.maxio == 0) 603de239312SAlexander Motin softc->maxio = DFLTPHYS; /* traditional default */ 604cd853791SKonstantin Belousov else if (cpi.maxio > maxphys) 605cd853791SKonstantin Belousov softc->maxio = maxphys; /* for safety */ 606de239312SAlexander Motin else 607de239312SAlexander Motin softc->maxio = cpi.maxio; /* real value */ 608de239312SAlexander Motin 609a9934668SKenneth D. Merry if (cpi.hba_misc & PIM_UNMAPPED) 610a9934668SKenneth D. Merry softc->flags |= PASS_FLAG_UNMAPPED_CAPABLE; 611a9934668SKenneth D. Merry 61276babe50SJustin T. Gibbs /* 61376babe50SJustin T. Gibbs * We pass in 0 for a blocksize, since we don't 61476babe50SJustin T. Gibbs * know what the blocksize of this device is, if 61576babe50SJustin T. Gibbs * it even has a blocksize. 61676babe50SJustin T. Gibbs */ 617edec59d9SAlexander Motin cam_periph_unlock(periph); 6183393f8daSKenneth D. Merry no_tags = (cgd->inq_data.flags & SID_CmdQue) == 0; 619c81d2c74SMatt Jacob softc->device_stats = devstat_new_entry("pass", 620d3ce8327SEd Schouten periph->unit_number, 0, 6213393f8daSKenneth D. Merry DEVSTAT_NO_BLOCKSIZE 6223393f8daSKenneth D. Merry | (no_tags ? DEVSTAT_NO_ORDERED_TAGS : 0), 62310b6172aSMatt Jacob softc->pd_type | 624b8b6b5d3SAlexander Motin XPORT_DEVSTAT_TYPE(cpi.transport) | 6252a888f93SKenneth D. Merry DEVSTAT_TYPE_PASS, 6262a888f93SKenneth D. Merry DEVSTAT_PRIORITY_PASS); 62773d26919SKenneth D. Merry 628ea37f519SKenneth D. Merry /* 629a9934668SKenneth D. Merry * Initialize the taskqueue handler for shutting down kqueue. 630a9934668SKenneth D. Merry */ 631a9934668SKenneth D. Merry TASK_INIT(&softc->shutdown_kqueue_task, /*priority*/ 0, 632a9934668SKenneth D. Merry pass_shutdown_kqueue, periph); 633a9934668SKenneth D. Merry 634a9934668SKenneth D. Merry /* 635a9934668SKenneth D. Merry * Acquire a reference to the periph that we can release once we've 636a9934668SKenneth D. Merry * cleaned up the kqueue. 637a9934668SKenneth D. Merry */ 63899e7a4adSScott Long if (cam_periph_acquire(periph) != 0) { 639a9934668SKenneth D. Merry xpt_print(periph->path, "%s: lost periph during " 640a9934668SKenneth D. Merry "registration!\n", __func__); 641a9934668SKenneth D. Merry cam_periph_lock(periph); 642a9934668SKenneth D. Merry return (CAM_REQ_CMP_ERR); 643a9934668SKenneth D. Merry } 644a9934668SKenneth D. Merry 645a9934668SKenneth D. Merry /* 646ea37f519SKenneth D. Merry * Acquire a reference to the periph before we create the devfs 647ea37f519SKenneth D. Merry * instance for it. We'll release this reference once the devfs 648ea37f519SKenneth D. Merry * instance has been freed. 649ea37f519SKenneth D. Merry */ 65099e7a4adSScott Long if (cam_periph_acquire(periph) != 0) { 651ea37f519SKenneth D. Merry xpt_print(periph->path, "%s: lost periph during " 652ea37f519SKenneth D. Merry "registration!\n", __func__); 65386d45c7fSKenneth D. Merry cam_periph_lock(periph); 654ea37f519SKenneth D. Merry return (CAM_REQ_CMP_ERR); 655ea37f519SKenneth D. Merry } 656ea37f519SKenneth D. Merry 65773d26919SKenneth D. Merry /* Register the device */ 658ee198893SKonstantin Belousov make_dev_args_init(&args); 659ee198893SKonstantin Belousov args.mda_devsw = &pass_cdevsw; 660ee198893SKonstantin Belousov args.mda_unit = periph->unit_number; 661ee198893SKonstantin Belousov args.mda_uid = UID_ROOT; 662ee198893SKonstantin Belousov args.mda_gid = GID_OPERATOR; 663ee198893SKonstantin Belousov args.mda_mode = 0600; 664ee198893SKonstantin Belousov args.mda_si_drv1 = periph; 665f1f3f7cfSMateusz Guzik args.mda_flags = MAKEDEV_NOWAIT; 666ee198893SKonstantin Belousov error = make_dev_s(&args, &softc->dev, "%s%d", periph->periph_name, 667ee198893SKonstantin Belousov periph->unit_number); 668ee198893SKonstantin Belousov if (error != 0) { 669ee198893SKonstantin Belousov cam_periph_lock(periph); 670ee198893SKonstantin Belousov cam_periph_release_locked(periph); 671ee198893SKonstantin Belousov return (CAM_REQ_CMP_ERR); 672ee198893SKonstantin Belousov } 673ea37f519SKenneth D. Merry 674ea37f519SKenneth D. Merry /* 675a9934668SKenneth D. Merry * Hold a reference to the periph before we create the physical 676a9934668SKenneth D. Merry * path alias so it can't go away. 677ea37f519SKenneth D. Merry */ 67899e7a4adSScott Long if (cam_periph_acquire(periph) != 0) { 679a9934668SKenneth D. Merry xpt_print(periph->path, "%s: lost periph during " 680a9934668SKenneth D. Merry "registration!\n", __func__); 681a9934668SKenneth D. Merry cam_periph_lock(periph); 682a9934668SKenneth D. Merry return (CAM_REQ_CMP_ERR); 683a9934668SKenneth D. Merry } 684ea37f519SKenneth D. Merry 685edec59d9SAlexander Motin cam_periph_lock(periph); 68673d26919SKenneth D. Merry 687416494d7SJustin T. Gibbs TASK_INIT(&softc->add_physpath_task, /*priority*/0, 688416494d7SJustin T. Gibbs pass_add_physpath, periph); 689416494d7SJustin T. Gibbs 69076babe50SJustin T. Gibbs /* 691416494d7SJustin T. Gibbs * See if physical path information is already available. 69276babe50SJustin T. Gibbs */ 693416494d7SJustin T. Gibbs taskqueue_enqueue(taskqueue_thread, &softc->add_physpath_task); 694416494d7SJustin T. Gibbs 695416494d7SJustin T. Gibbs /* 696416494d7SJustin T. Gibbs * Add an async callback so that we get notified if 697416494d7SJustin T. Gibbs * this device goes away or its physical path 698416494d7SJustin T. Gibbs * (stored in the advanced info data of the EDT) has 699416494d7SJustin T. Gibbs * changed. 700416494d7SJustin T. Gibbs */ 701416494d7SJustin T. Gibbs xpt_register_async(AC_LOST_DEVICE | AC_ADVINFO_CHANGED, 702416494d7SJustin T. Gibbs passasync, periph, periph->path); 70376babe50SJustin T. Gibbs 70476babe50SJustin T. Gibbs if (bootverbose) 70576babe50SJustin T. Gibbs xpt_announce_periph(periph, NULL); 70676babe50SJustin T. Gibbs 70776babe50SJustin T. Gibbs return(CAM_REQ_CMP); 70876babe50SJustin T. Gibbs } 70976babe50SJustin T. Gibbs 71076babe50SJustin T. Gibbs static int 71189c9c53dSPoul-Henning Kamp passopen(struct cdev *dev, int flags, int fmt, struct thread *td) 71276babe50SJustin T. Gibbs { 71376babe50SJustin T. Gibbs struct cam_periph *periph; 71476babe50SJustin T. Gibbs struct pass_softc *softc; 715e2a5fdf9SNate Lawson int error; 71676babe50SJustin T. Gibbs 717e2a5fdf9SNate Lawson periph = (struct cam_periph *)dev->si_drv1; 71899e7a4adSScott Long if (cam_periph_acquire(periph) != 0) 71976babe50SJustin T. Gibbs return (ENXIO); 72076babe50SJustin T. Gibbs 7212b83592fSScott Long cam_periph_lock(periph); 7222b83592fSScott Long 72376babe50SJustin T. Gibbs softc = (struct pass_softc *)periph->softc; 72476babe50SJustin T. Gibbs 725ee9c90c7SKenneth D. Merry if (softc->flags & PASS_FLAG_INVALID) { 726c552ebe1SKenneth D. Merry cam_periph_release_locked(periph); 7272b83592fSScott Long cam_periph_unlock(periph); 72876babe50SJustin T. Gibbs return(ENXIO); 729ee9c90c7SKenneth D. Merry } 73022b9c86cSKenneth D. Merry 73122b9c86cSKenneth D. Merry /* 732f5ef42beSRobert Watson * Don't allow access when we're running at a high securelevel. 73322b9c86cSKenneth D. Merry */ 734a854ed98SJohn Baldwin error = securelevel_gt(td->td_ucred, 1); 735f7312ca2SRobert Watson if (error) { 736c552ebe1SKenneth D. Merry cam_periph_release_locked(periph); 7372b83592fSScott Long cam_periph_unlock(periph); 738f7312ca2SRobert Watson return(error); 73922b9c86cSKenneth D. Merry } 74076babe50SJustin T. Gibbs 74176babe50SJustin T. Gibbs /* 74266a0780eSKenneth D. Merry * Only allow read-write access. 74366a0780eSKenneth D. Merry */ 74422b9c86cSKenneth D. Merry if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0)) { 745c552ebe1SKenneth D. Merry cam_periph_release_locked(periph); 7462b83592fSScott Long cam_periph_unlock(periph); 74766a0780eSKenneth D. Merry return(EPERM); 74822b9c86cSKenneth D. Merry } 74966a0780eSKenneth D. Merry 75066a0780eSKenneth D. Merry /* 75176babe50SJustin T. Gibbs * We don't allow nonblocking access. 75276babe50SJustin T. Gibbs */ 75376babe50SJustin T. Gibbs if ((flags & O_NONBLOCK) != 0) { 754f0d9af51SMatt Jacob xpt_print(periph->path, "can't do nonblocking access\n"); 755c552ebe1SKenneth D. Merry cam_periph_release_locked(periph); 7562b83592fSScott Long cam_periph_unlock(periph); 75722b9c86cSKenneth D. Merry return(EINVAL); 75876babe50SJustin T. Gibbs } 75976babe50SJustin T. Gibbs 76086d45c7fSKenneth D. Merry softc->open_count++; 76186d45c7fSKenneth D. Merry 762835187bfSScott Long cam_periph_unlock(periph); 76376babe50SJustin T. Gibbs 76476babe50SJustin T. Gibbs return (error); 76576babe50SJustin T. Gibbs } 76676babe50SJustin T. Gibbs 76776babe50SJustin T. Gibbs static int 76889c9c53dSPoul-Henning Kamp passclose(struct cdev *dev, int flag, int fmt, struct thread *td) 76976babe50SJustin T. Gibbs { 77076babe50SJustin T. Gibbs struct cam_periph *periph; 77186d45c7fSKenneth D. Merry struct pass_softc *softc; 772227d67aaSAlexander Motin struct mtx *mtx; 77376babe50SJustin T. Gibbs 774e2a5fdf9SNate Lawson periph = (struct cam_periph *)dev->si_drv1; 775227d67aaSAlexander Motin mtx = cam_periph_mtx(periph); 776227d67aaSAlexander Motin mtx_lock(mtx); 77776babe50SJustin T. Gibbs 77886d45c7fSKenneth D. Merry softc = periph->softc; 77986d45c7fSKenneth D. Merry softc->open_count--; 78086d45c7fSKenneth D. Merry 781a9934668SKenneth D. Merry if (softc->open_count == 0) { 782a9934668SKenneth D. Merry struct pass_io_req *io_req, *io_req2; 783a9934668SKenneth D. Merry 784a9934668SKenneth D. Merry TAILQ_FOREACH_SAFE(io_req, &softc->done_queue, links, io_req2) { 785a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->done_queue, io_req, links); 786a9934668SKenneth D. Merry passiocleanup(softc, io_req); 787a9934668SKenneth D. Merry uma_zfree(softc->pass_zone, io_req); 788a9934668SKenneth D. Merry } 789a9934668SKenneth D. Merry 790a9934668SKenneth D. Merry TAILQ_FOREACH_SAFE(io_req, &softc->incoming_queue, links, 791a9934668SKenneth D. Merry io_req2) { 792a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->incoming_queue, io_req, links); 793a9934668SKenneth D. Merry passiocleanup(softc, io_req); 794a9934668SKenneth D. Merry uma_zfree(softc->pass_zone, io_req); 795a9934668SKenneth D. Merry } 796a9934668SKenneth D. Merry 797a9934668SKenneth D. Merry /* 798a9934668SKenneth D. Merry * If there are any active I/Os, we need to forcibly acquire a 799a9934668SKenneth D. Merry * reference to the peripheral so that we don't go away 800a9934668SKenneth D. Merry * before they complete. We'll release the reference when 801a9934668SKenneth D. Merry * the abandoned queue is empty. 802a9934668SKenneth D. Merry */ 803a9934668SKenneth D. Merry io_req = TAILQ_FIRST(&softc->active_queue); 804a9934668SKenneth D. Merry if ((io_req != NULL) 805a9934668SKenneth D. Merry && (softc->flags & PASS_FLAG_ABANDONED_REF_SET) == 0) { 806a9934668SKenneth D. Merry cam_periph_doacquire(periph); 807a9934668SKenneth D. Merry softc->flags |= PASS_FLAG_ABANDONED_REF_SET; 808a9934668SKenneth D. Merry } 809a9934668SKenneth D. Merry 810a9934668SKenneth D. Merry /* 811a9934668SKenneth D. Merry * Since the I/O in the active queue is not under our 812a9934668SKenneth D. Merry * control, just set a flag so that we can clean it up when 813a9934668SKenneth D. Merry * it completes and put it on the abandoned queue. This 814a9934668SKenneth D. Merry * will prevent our sending spurious completions in the 815a9934668SKenneth D. Merry * event that the device is opened again before these I/Os 816a9934668SKenneth D. Merry * complete. 817a9934668SKenneth D. Merry */ 818a9934668SKenneth D. Merry TAILQ_FOREACH_SAFE(io_req, &softc->active_queue, links, 819a9934668SKenneth D. Merry io_req2) { 820a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->active_queue, io_req, links); 821a9934668SKenneth D. Merry io_req->flags |= PASS_IO_ABANDONED; 822a9934668SKenneth D. Merry TAILQ_INSERT_TAIL(&softc->abandoned_queue, io_req, 823a9934668SKenneth D. Merry links); 824a9934668SKenneth D. Merry } 825a9934668SKenneth D. Merry } 826a9934668SKenneth D. Merry 82786d45c7fSKenneth D. Merry cam_periph_release_locked(periph); 82886d45c7fSKenneth D. Merry 82986d45c7fSKenneth D. Merry /* 830227d67aaSAlexander Motin * We reference the lock directly here, instead of using 83186d45c7fSKenneth D. Merry * cam_periph_unlock(). The reason is that the call to 83286d45c7fSKenneth D. Merry * cam_periph_release_locked() above could result in the periph 83386d45c7fSKenneth D. Merry * getting freed. If that is the case, dereferencing the periph 83486d45c7fSKenneth D. Merry * with a cam_periph_unlock() call would cause a page fault. 83586d45c7fSKenneth D. Merry * 83686d45c7fSKenneth D. Merry * cam_periph_release() avoids this problem using the same method, 83786d45c7fSKenneth D. Merry * but we're manually acquiring and dropping the lock here to 83886d45c7fSKenneth D. Merry * protect the open count and avoid another lock acquisition and 83986d45c7fSKenneth D. Merry * release. 84086d45c7fSKenneth D. Merry */ 841227d67aaSAlexander Motin mtx_unlock(mtx); 84276babe50SJustin T. Gibbs 84376babe50SJustin T. Gibbs return (0); 84476babe50SJustin T. Gibbs } 84576babe50SJustin T. Gibbs 846a9934668SKenneth D. Merry static void 847a9934668SKenneth D. Merry passstart(struct cam_periph *periph, union ccb *start_ccb) 848a9934668SKenneth D. Merry { 849a9934668SKenneth D. Merry struct pass_softc *softc; 850a9934668SKenneth D. Merry 851a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 852a9934668SKenneth D. Merry 853a9934668SKenneth D. Merry switch (softc->state) { 854a9934668SKenneth D. Merry case PASS_STATE_NORMAL: { 855a9934668SKenneth D. Merry struct pass_io_req *io_req; 856a9934668SKenneth D. Merry 857a9934668SKenneth D. Merry /* 858a9934668SKenneth D. Merry * Check for any queued I/O requests that require an 859a9934668SKenneth D. Merry * allocated slot. 860a9934668SKenneth D. Merry */ 861a9934668SKenneth D. Merry io_req = TAILQ_FIRST(&softc->incoming_queue); 862a9934668SKenneth D. Merry if (io_req == NULL) { 863a9934668SKenneth D. Merry xpt_release_ccb(start_ccb); 864a9934668SKenneth D. Merry break; 865a9934668SKenneth D. Merry } 866a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->incoming_queue, io_req, links); 867a9934668SKenneth D. Merry TAILQ_INSERT_TAIL(&softc->active_queue, io_req, links); 868a9934668SKenneth D. Merry /* 869a9934668SKenneth D. Merry * Merge the user's CCB into the allocated CCB. 870a9934668SKenneth D. Merry */ 871a9934668SKenneth D. Merry xpt_merge_ccb(start_ccb, &io_req->ccb); 872a9934668SKenneth D. Merry start_ccb->ccb_h.ccb_type = PASS_CCB_QUEUED_IO; 873a9934668SKenneth D. Merry start_ccb->ccb_h.ccb_ioreq = io_req; 874a9934668SKenneth D. Merry start_ccb->ccb_h.cbfcnp = passdone; 875a9934668SKenneth D. Merry io_req->alloced_ccb = start_ccb; 876a9934668SKenneth D. Merry binuptime(&io_req->start_time); 877a9934668SKenneth D. Merry devstat_start_transaction(softc->device_stats, 878a9934668SKenneth D. Merry &io_req->start_time); 879a9934668SKenneth D. Merry 880a9934668SKenneth D. Merry xpt_action(start_ccb); 881a9934668SKenneth D. Merry 882a9934668SKenneth D. Merry /* 883a9934668SKenneth D. Merry * If we have any more I/O waiting, schedule ourselves again. 884a9934668SKenneth D. Merry */ 885a9934668SKenneth D. Merry if (!TAILQ_EMPTY(&softc->incoming_queue)) 886a9934668SKenneth D. Merry xpt_schedule(periph, CAM_PRIORITY_NORMAL); 887a9934668SKenneth D. Merry break; 888a9934668SKenneth D. Merry } 889a9934668SKenneth D. Merry default: 890a9934668SKenneth D. Merry break; 891a9934668SKenneth D. Merry } 892a9934668SKenneth D. Merry } 893a9934668SKenneth D. Merry 894a9934668SKenneth D. Merry static void 895a9934668SKenneth D. Merry passdone(struct cam_periph *periph, union ccb *done_ccb) 896a9934668SKenneth D. Merry { 897a9934668SKenneth D. Merry struct pass_softc *softc; 898a9934668SKenneth D. Merry struct ccb_scsiio *csio; 899a9934668SKenneth D. Merry 900a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 901a9934668SKenneth D. Merry 902a9934668SKenneth D. Merry cam_periph_assert(periph, MA_OWNED); 903a9934668SKenneth D. Merry 904a9934668SKenneth D. Merry csio = &done_ccb->csio; 905a9934668SKenneth D. Merry switch (csio->ccb_h.ccb_type) { 906a9934668SKenneth D. Merry case PASS_CCB_QUEUED_IO: { 907a9934668SKenneth D. Merry struct pass_io_req *io_req; 908a9934668SKenneth D. Merry 909a9934668SKenneth D. Merry io_req = done_ccb->ccb_h.ccb_ioreq; 910a9934668SKenneth D. Merry #if 0 911a9934668SKenneth D. Merry xpt_print(periph->path, "%s: called for user CCB %p\n", 912a9934668SKenneth D. Merry __func__, io_req->user_ccb_ptr); 913a9934668SKenneth D. Merry #endif 914e474a8e2SWarner Losh if (((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) && 915e474a8e2SWarner Losh ((io_req->flags & PASS_IO_ABANDONED) == 0)) { 916a9934668SKenneth D. Merry int error; 917e474a8e2SWarner Losh uint32_t cam_flags, sense_flags; 918a9934668SKenneth D. Merry 919e474a8e2SWarner Losh passflags(done_ccb, &cam_flags, &sense_flags); 920e474a8e2SWarner Losh error = passerror(done_ccb, cam_flags, sense_flags); 921a9934668SKenneth D. Merry 922a9934668SKenneth D. Merry if (error == ERESTART) { 923e474a8e2SWarner Losh KASSERT(((sense_flags & SF_NO_RETRY) == 0), 924e474a8e2SWarner Losh ("passerror returned ERESTART with no retry requested\n")); 925a9934668SKenneth D. Merry return; 926a9934668SKenneth D. Merry } 927a9934668SKenneth D. Merry } 928a9934668SKenneth D. Merry 929a9934668SKenneth D. Merry /* 930a9934668SKenneth D. Merry * Copy the allocated CCB contents back to the malloced CCB 931a9934668SKenneth D. Merry * so we can give status back to the user when he requests it. 932a9934668SKenneth D. Merry */ 933a9934668SKenneth D. Merry bcopy(done_ccb, &io_req->ccb, sizeof(*done_ccb)); 934a9934668SKenneth D. Merry 935a9934668SKenneth D. Merry /* 936a9934668SKenneth D. Merry * Log data/transaction completion with devstat(9). 937a9934668SKenneth D. Merry */ 938a9934668SKenneth D. Merry switch (done_ccb->ccb_h.func_code) { 939a9934668SKenneth D. Merry case XPT_SCSI_IO: 940a9934668SKenneth D. Merry devstat_end_transaction(softc->device_stats, 941a9934668SKenneth D. Merry done_ccb->csio.dxfer_len - done_ccb->csio.resid, 942a9934668SKenneth D. Merry done_ccb->csio.tag_action & 0x3, 943a9934668SKenneth D. Merry ((done_ccb->ccb_h.flags & CAM_DIR_MASK) == 944a9934668SKenneth D. Merry CAM_DIR_NONE) ? DEVSTAT_NO_DATA : 945a9934668SKenneth D. Merry (done_ccb->ccb_h.flags & CAM_DIR_OUT) ? 946a9934668SKenneth D. Merry DEVSTAT_WRITE : DEVSTAT_READ, NULL, 947a9934668SKenneth D. Merry &io_req->start_time); 948a9934668SKenneth D. Merry break; 949a9934668SKenneth D. Merry case XPT_ATA_IO: 950a9934668SKenneth D. Merry devstat_end_transaction(softc->device_stats, 951a9934668SKenneth D. Merry done_ccb->ataio.dxfer_len - done_ccb->ataio.resid, 952e4cc6558SWarner Losh 0, /* Not used in ATA */ 953a9934668SKenneth D. Merry ((done_ccb->ccb_h.flags & CAM_DIR_MASK) == 954a9934668SKenneth D. Merry CAM_DIR_NONE) ? DEVSTAT_NO_DATA : 955a9934668SKenneth D. Merry (done_ccb->ccb_h.flags & CAM_DIR_OUT) ? 956a9934668SKenneth D. Merry DEVSTAT_WRITE : DEVSTAT_READ, NULL, 957a9934668SKenneth D. Merry &io_req->start_time); 958a9934668SKenneth D. Merry break; 959a9934668SKenneth D. Merry case XPT_SMP_IO: 960a9934668SKenneth D. Merry /* 961a9934668SKenneth D. Merry * XXX KDM this isn't quite right, but there isn't 962a9934668SKenneth D. Merry * currently an easy way to represent a bidirectional 963a9934668SKenneth D. Merry * transfer in devstat. The only way to do it 964a9934668SKenneth D. Merry * and have the byte counts come out right would 965a9934668SKenneth D. Merry * mean that we would have to record two 966a9934668SKenneth D. Merry * transactions, one for the request and one for the 967a9934668SKenneth D. Merry * response. For now, so that we report something, 968a9934668SKenneth D. Merry * just treat the entire thing as a read. 969a9934668SKenneth D. Merry */ 970a9934668SKenneth D. Merry devstat_end_transaction(softc->device_stats, 971a9934668SKenneth D. Merry done_ccb->smpio.smp_request_len + 972a9934668SKenneth D. Merry done_ccb->smpio.smp_response_len, 973a9934668SKenneth D. Merry DEVSTAT_TAG_SIMPLE, DEVSTAT_READ, NULL, 974a9934668SKenneth D. Merry &io_req->start_time); 975a9934668SKenneth D. Merry break; 976a9934668SKenneth D. Merry default: 977a9934668SKenneth D. Merry devstat_end_transaction(softc->device_stats, 0, 978a9934668SKenneth D. Merry DEVSTAT_TAG_NONE, DEVSTAT_NO_DATA, NULL, 979a9934668SKenneth D. Merry &io_req->start_time); 980a9934668SKenneth D. Merry break; 981a9934668SKenneth D. Merry } 982a9934668SKenneth D. Merry 983a9934668SKenneth D. Merry /* 984a9934668SKenneth D. Merry * In the normal case, take the completed I/O off of the 985a9934668SKenneth D. Merry * active queue and put it on the done queue. Notitfy the 986a9934668SKenneth D. Merry * user that we have a completed I/O. 987a9934668SKenneth D. Merry */ 988a9934668SKenneth D. Merry if ((io_req->flags & PASS_IO_ABANDONED) == 0) { 989a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->active_queue, io_req, links); 990a9934668SKenneth D. Merry TAILQ_INSERT_TAIL(&softc->done_queue, io_req, links); 991a9934668SKenneth D. Merry selwakeuppri(&softc->read_select, PRIBIO); 992a9934668SKenneth D. Merry KNOTE_LOCKED(&softc->read_select.si_note, 0); 993a9934668SKenneth D. Merry } else { 994a9934668SKenneth D. Merry /* 995a9934668SKenneth D. Merry * In the case of an abandoned I/O (final close 996a9934668SKenneth D. Merry * without fetching the I/O), take it off of the 997a9934668SKenneth D. Merry * abandoned queue and free it. 998a9934668SKenneth D. Merry */ 999a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->abandoned_queue, io_req, links); 1000a9934668SKenneth D. Merry passiocleanup(softc, io_req); 1001a9934668SKenneth D. Merry uma_zfree(softc->pass_zone, io_req); 1002a9934668SKenneth D. Merry 1003a9934668SKenneth D. Merry /* 1004a9934668SKenneth D. Merry * Release the done_ccb here, since we may wind up 1005a9934668SKenneth D. Merry * freeing the peripheral when we decrement the 1006a9934668SKenneth D. Merry * reference count below. 1007a9934668SKenneth D. Merry */ 1008a9934668SKenneth D. Merry xpt_release_ccb(done_ccb); 1009a9934668SKenneth D. Merry 1010a9934668SKenneth D. Merry /* 1011a9934668SKenneth D. Merry * If the abandoned queue is empty, we can release 1012a9934668SKenneth D. Merry * our reference to the periph since we won't have 1013a9934668SKenneth D. Merry * any more completions coming. 1014a9934668SKenneth D. Merry */ 1015a9934668SKenneth D. Merry if ((TAILQ_EMPTY(&softc->abandoned_queue)) 1016a9934668SKenneth D. Merry && (softc->flags & PASS_FLAG_ABANDONED_REF_SET)) { 1017a9934668SKenneth D. Merry softc->flags &= ~PASS_FLAG_ABANDONED_REF_SET; 1018a9934668SKenneth D. Merry cam_periph_release_locked(periph); 1019a9934668SKenneth D. Merry } 1020a9934668SKenneth D. Merry 1021a9934668SKenneth D. Merry /* 1022a9934668SKenneth D. Merry * We have already released the CCB, so we can 1023a9934668SKenneth D. Merry * return. 1024a9934668SKenneth D. Merry */ 1025a9934668SKenneth D. Merry return; 1026a9934668SKenneth D. Merry } 1027a9934668SKenneth D. Merry break; 1028a9934668SKenneth D. Merry } 1029a9934668SKenneth D. Merry } 1030a9934668SKenneth D. Merry xpt_release_ccb(done_ccb); 1031a9934668SKenneth D. Merry } 1032a9934668SKenneth D. Merry 1033a9934668SKenneth D. Merry static int 1034a9934668SKenneth D. Merry passcreatezone(struct cam_periph *periph) 1035a9934668SKenneth D. Merry { 1036a9934668SKenneth D. Merry struct pass_softc *softc; 1037a9934668SKenneth D. Merry int error; 1038a9934668SKenneth D. Merry 1039a9934668SKenneth D. Merry error = 0; 1040a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 1041a9934668SKenneth D. Merry 1042a9934668SKenneth D. Merry cam_periph_assert(periph, MA_OWNED); 1043a9934668SKenneth D. Merry KASSERT(((softc->flags & PASS_FLAG_ZONE_VALID) == 0), 1044a9934668SKenneth D. Merry ("%s called when the pass(4) zone is valid!\n", __func__)); 1045a9934668SKenneth D. Merry KASSERT((softc->pass_zone == NULL), 1046a9934668SKenneth D. Merry ("%s called when the pass(4) zone is allocated!\n", __func__)); 1047a9934668SKenneth D. Merry 1048a9934668SKenneth D. Merry if ((softc->flags & PASS_FLAG_ZONE_INPROG) == 0) { 1049a9934668SKenneth D. Merry /* 1050a9934668SKenneth D. Merry * We're the first context through, so we need to create 1051a9934668SKenneth D. Merry * the pass(4) UMA zone for I/O requests. 1052a9934668SKenneth D. Merry */ 1053a9934668SKenneth D. Merry softc->flags |= PASS_FLAG_ZONE_INPROG; 1054a9934668SKenneth D. Merry 1055a9934668SKenneth D. Merry /* 1056a9934668SKenneth D. Merry * uma_zcreate() does a blocking (M_WAITOK) allocation, 1057a9934668SKenneth D. Merry * so we cannot hold a mutex while we call it. 1058a9934668SKenneth D. Merry */ 1059a9934668SKenneth D. Merry cam_periph_unlock(periph); 1060a9934668SKenneth D. Merry 1061a9934668SKenneth D. Merry softc->pass_zone = uma_zcreate(softc->zone_name, 1062a9934668SKenneth D. Merry sizeof(struct pass_io_req), NULL, NULL, NULL, NULL, 1063a9934668SKenneth D. Merry /*align*/ 0, /*flags*/ 0); 1064a9934668SKenneth D. Merry 1065a9934668SKenneth D. Merry softc->pass_io_zone = uma_zcreate(softc->io_zone_name, 1066a9934668SKenneth D. Merry softc->io_zone_size, NULL, NULL, NULL, NULL, 1067a9934668SKenneth D. Merry /*align*/ 0, /*flags*/ 0); 1068a9934668SKenneth D. Merry 1069a9934668SKenneth D. Merry cam_periph_lock(periph); 1070a9934668SKenneth D. Merry 1071a9934668SKenneth D. Merry if ((softc->pass_zone == NULL) 1072a9934668SKenneth D. Merry || (softc->pass_io_zone == NULL)) { 1073a9934668SKenneth D. Merry if (softc->pass_zone == NULL) 1074a9934668SKenneth D. Merry xpt_print(periph->path, "unable to allocate " 1075a9934668SKenneth D. Merry "IO Req UMA zone\n"); 1076a9934668SKenneth D. Merry else 1077a9934668SKenneth D. Merry xpt_print(periph->path, "unable to allocate " 1078a9934668SKenneth D. Merry "IO UMA zone\n"); 1079a9934668SKenneth D. Merry softc->flags &= ~PASS_FLAG_ZONE_INPROG; 1080a9934668SKenneth D. Merry goto bailout; 1081a9934668SKenneth D. Merry } 1082a9934668SKenneth D. Merry 1083a9934668SKenneth D. Merry /* 1084a9934668SKenneth D. Merry * Set the flags appropriately and notify any other waiters. 1085a9934668SKenneth D. Merry */ 1086ca2a7262SKenneth D. Merry softc->flags &= ~PASS_FLAG_ZONE_INPROG; 1087a9934668SKenneth D. Merry softc->flags |= PASS_FLAG_ZONE_VALID; 1088a9934668SKenneth D. Merry wakeup(&softc->pass_zone); 1089a9934668SKenneth D. Merry } else { 1090a9934668SKenneth D. Merry /* 1091a9934668SKenneth D. Merry * In this case, the UMA zone has not yet been created, but 1092a9934668SKenneth D. Merry * another context is in the process of creating it. We 1093a9934668SKenneth D. Merry * need to sleep until the creation is either done or has 1094a9934668SKenneth D. Merry * failed. 1095a9934668SKenneth D. Merry */ 1096a9934668SKenneth D. Merry while ((softc->flags & PASS_FLAG_ZONE_INPROG) 1097a9934668SKenneth D. Merry && ((softc->flags & PASS_FLAG_ZONE_VALID) == 0)) { 1098a9934668SKenneth D. Merry error = msleep(&softc->pass_zone, 1099a9934668SKenneth D. Merry cam_periph_mtx(periph), PRIBIO, 1100a9934668SKenneth D. Merry "paszon", 0); 1101a9934668SKenneth D. Merry if (error != 0) 1102a9934668SKenneth D. Merry goto bailout; 1103a9934668SKenneth D. Merry } 1104a9934668SKenneth D. Merry /* 1105a9934668SKenneth D. Merry * If the zone creation failed, no luck for the user. 1106a9934668SKenneth D. Merry */ 1107a9934668SKenneth D. Merry if ((softc->flags & PASS_FLAG_ZONE_VALID) == 0){ 1108a9934668SKenneth D. Merry error = ENOMEM; 1109a9934668SKenneth D. Merry goto bailout; 1110a9934668SKenneth D. Merry } 1111a9934668SKenneth D. Merry } 1112a9934668SKenneth D. Merry bailout: 1113a9934668SKenneth D. Merry return (error); 1114a9934668SKenneth D. Merry } 1115a9934668SKenneth D. Merry 1116a9934668SKenneth D. Merry static void 1117a9934668SKenneth D. Merry passiocleanup(struct pass_softc *softc, struct pass_io_req *io_req) 1118a9934668SKenneth D. Merry { 1119a9934668SKenneth D. Merry union ccb *ccb; 11207c5d20a6SWarner Losh uint8_t **data_ptrs[CAM_PERIPH_MAXMAPS]; 1121a9934668SKenneth D. Merry int i, numbufs; 1122a9934668SKenneth D. Merry 1123a9934668SKenneth D. Merry ccb = &io_req->ccb; 1124a9934668SKenneth D. Merry 1125a9934668SKenneth D. Merry switch (ccb->ccb_h.func_code) { 1126a9934668SKenneth D. Merry case XPT_DEV_MATCH: 1127a9934668SKenneth D. Merry numbufs = min(io_req->num_bufs, 2); 1128a9934668SKenneth D. Merry 1129a9934668SKenneth D. Merry if (numbufs == 1) { 11307c5d20a6SWarner Losh data_ptrs[0] = (uint8_t **)&ccb->cdm.matches; 1131a9934668SKenneth D. Merry } else { 11327c5d20a6SWarner Losh data_ptrs[0] = (uint8_t **)&ccb->cdm.patterns; 11337c5d20a6SWarner Losh data_ptrs[1] = (uint8_t **)&ccb->cdm.matches; 1134a9934668SKenneth D. Merry } 1135a9934668SKenneth D. Merry break; 1136a9934668SKenneth D. Merry case XPT_SCSI_IO: 1137a9934668SKenneth D. Merry case XPT_CONT_TARGET_IO: 1138a9934668SKenneth D. Merry data_ptrs[0] = &ccb->csio.data_ptr; 1139a9934668SKenneth D. Merry numbufs = min(io_req->num_bufs, 1); 1140a9934668SKenneth D. Merry break; 1141a9934668SKenneth D. Merry case XPT_ATA_IO: 1142a9934668SKenneth D. Merry data_ptrs[0] = &ccb->ataio.data_ptr; 1143a9934668SKenneth D. Merry numbufs = min(io_req->num_bufs, 1); 1144a9934668SKenneth D. Merry break; 1145a9934668SKenneth D. Merry case XPT_SMP_IO: 1146a9934668SKenneth D. Merry numbufs = min(io_req->num_bufs, 2); 1147a9934668SKenneth D. Merry data_ptrs[0] = &ccb->smpio.smp_request; 1148a9934668SKenneth D. Merry data_ptrs[1] = &ccb->smpio.smp_response; 1149a9934668SKenneth D. Merry break; 1150a9934668SKenneth D. Merry case XPT_DEV_ADVINFO: 1151a9934668SKenneth D. Merry numbufs = min(io_req->num_bufs, 1); 1152a9934668SKenneth D. Merry data_ptrs[0] = (uint8_t **)&ccb->cdai.buf; 1153a9934668SKenneth D. Merry break; 1154df424515SWarner Losh case XPT_NVME_IO: 1155df424515SWarner Losh case XPT_NVME_ADMIN: 1156df424515SWarner Losh data_ptrs[0] = &ccb->nvmeio.data_ptr; 1157df424515SWarner Losh numbufs = min(io_req->num_bufs, 1); 1158df424515SWarner Losh break; 1159a9934668SKenneth D. Merry default: 1160a9934668SKenneth D. Merry /* allow ourselves to be swapped once again */ 1161a9934668SKenneth D. Merry return; 1162a9934668SKenneth D. Merry break; /* NOTREACHED */ 1163a9934668SKenneth D. Merry } 1164a9934668SKenneth D. Merry 1165a9934668SKenneth D. Merry if (io_req->flags & PASS_IO_USER_SEG_MALLOC) { 1166a9934668SKenneth D. Merry free(io_req->user_segptr, M_SCSIPASS); 1167a9934668SKenneth D. Merry io_req->user_segptr = NULL; 1168a9934668SKenneth D. Merry } 1169a9934668SKenneth D. Merry 1170a9934668SKenneth D. Merry /* 1171a9934668SKenneth D. Merry * We only want to free memory we malloced. 1172a9934668SKenneth D. Merry */ 1173a9934668SKenneth D. Merry if (io_req->data_flags == CAM_DATA_VADDR) { 1174a9934668SKenneth D. Merry for (i = 0; i < io_req->num_bufs; i++) { 1175a9934668SKenneth D. Merry if (io_req->kern_bufs[i] == NULL) 1176a9934668SKenneth D. Merry continue; 1177a9934668SKenneth D. Merry 1178a9934668SKenneth D. Merry free(io_req->kern_bufs[i], M_SCSIPASS); 1179a9934668SKenneth D. Merry io_req->kern_bufs[i] = NULL; 1180a9934668SKenneth D. Merry } 1181a9934668SKenneth D. Merry } else if (io_req->data_flags == CAM_DATA_SG) { 1182a9934668SKenneth D. Merry for (i = 0; i < io_req->num_kern_segs; i++) { 1183a9934668SKenneth D. Merry if ((uint8_t *)(uintptr_t) 1184a9934668SKenneth D. Merry io_req->kern_segptr[i].ds_addr == NULL) 1185a9934668SKenneth D. Merry continue; 1186a9934668SKenneth D. Merry 1187a9934668SKenneth D. Merry uma_zfree(softc->pass_io_zone, (uint8_t *)(uintptr_t) 1188a9934668SKenneth D. Merry io_req->kern_segptr[i].ds_addr); 1189a9934668SKenneth D. Merry io_req->kern_segptr[i].ds_addr = 0; 1190a9934668SKenneth D. Merry } 1191a9934668SKenneth D. Merry } 1192a9934668SKenneth D. Merry 1193a9934668SKenneth D. Merry if (io_req->flags & PASS_IO_KERN_SEG_MALLOC) { 1194a9934668SKenneth D. Merry free(io_req->kern_segptr, M_SCSIPASS); 1195a9934668SKenneth D. Merry io_req->kern_segptr = NULL; 1196a9934668SKenneth D. Merry } 1197a9934668SKenneth D. Merry 1198a9934668SKenneth D. Merry if (io_req->data_flags != CAM_DATA_PADDR) { 1199a9934668SKenneth D. Merry for (i = 0; i < numbufs; i++) { 1200a9934668SKenneth D. Merry /* 1201a9934668SKenneth D. Merry * Restore the user's buffer pointers to their 1202a9934668SKenneth D. Merry * previous values. 1203a9934668SKenneth D. Merry */ 1204a9934668SKenneth D. Merry if (io_req->user_bufs[i] != NULL) 1205a9934668SKenneth D. Merry *data_ptrs[i] = io_req->user_bufs[i]; 1206a9934668SKenneth D. Merry } 1207a9934668SKenneth D. Merry } 1208a9934668SKenneth D. Merry 1209a9934668SKenneth D. Merry } 1210a9934668SKenneth D. Merry 1211a9934668SKenneth D. Merry static int 1212a9934668SKenneth D. Merry passcopysglist(struct cam_periph *periph, struct pass_io_req *io_req, 1213a9934668SKenneth D. Merry ccb_flags direction) 1214a9934668SKenneth D. Merry { 12156637b746SWarner Losh bus_size_t kern_watermark, user_watermark, len_to_copy; 1216a9934668SKenneth D. Merry bus_dma_segment_t *user_sglist, *kern_sglist; 1217a9934668SKenneth D. Merry int i, j, error; 1218a9934668SKenneth D. Merry 1219a9934668SKenneth D. Merry error = 0; 1220a9934668SKenneth D. Merry kern_watermark = 0; 1221a9934668SKenneth D. Merry user_watermark = 0; 1222a9934668SKenneth D. Merry len_to_copy = 0; 1223a9934668SKenneth D. Merry user_sglist = io_req->user_segptr; 1224a9934668SKenneth D. Merry kern_sglist = io_req->kern_segptr; 1225a9934668SKenneth D. Merry 1226a9934668SKenneth D. Merry for (i = 0, j = 0; i < io_req->num_user_segs && 1227a9934668SKenneth D. Merry j < io_req->num_kern_segs;) { 1228a9934668SKenneth D. Merry uint8_t *user_ptr, *kern_ptr; 1229a9934668SKenneth D. Merry 1230a9934668SKenneth D. Merry len_to_copy = min(user_sglist[i].ds_len -user_watermark, 1231a9934668SKenneth D. Merry kern_sglist[j].ds_len - kern_watermark); 1232a9934668SKenneth D. Merry 1233a9934668SKenneth D. Merry user_ptr = (uint8_t *)(uintptr_t)user_sglist[i].ds_addr; 1234a9934668SKenneth D. Merry user_ptr = user_ptr + user_watermark; 1235a9934668SKenneth D. Merry kern_ptr = (uint8_t *)(uintptr_t)kern_sglist[j].ds_addr; 1236a9934668SKenneth D. Merry kern_ptr = kern_ptr + kern_watermark; 1237a9934668SKenneth D. Merry 1238a9934668SKenneth D. Merry user_watermark += len_to_copy; 1239a9934668SKenneth D. Merry kern_watermark += len_to_copy; 1240a9934668SKenneth D. Merry 1241a9934668SKenneth D. Merry if (direction == CAM_DIR_IN) { 1242a9934668SKenneth D. Merry error = copyout(kern_ptr, user_ptr, len_to_copy); 1243a9934668SKenneth D. Merry if (error != 0) { 1244a9934668SKenneth D. Merry xpt_print(periph->path, "%s: copyout of %u " 1245a9934668SKenneth D. Merry "bytes from %p to %p failed with " 1246a9934668SKenneth D. Merry "error %d\n", __func__, len_to_copy, 1247a9934668SKenneth D. Merry kern_ptr, user_ptr, error); 1248a9934668SKenneth D. Merry goto bailout; 1249a9934668SKenneth D. Merry } 1250a9934668SKenneth D. Merry } else { 1251a9934668SKenneth D. Merry error = copyin(user_ptr, kern_ptr, len_to_copy); 1252a9934668SKenneth D. Merry if (error != 0) { 1253a9934668SKenneth D. Merry xpt_print(periph->path, "%s: copyin of %u " 1254a9934668SKenneth D. Merry "bytes from %p to %p failed with " 1255a9934668SKenneth D. Merry "error %d\n", __func__, len_to_copy, 1256a9934668SKenneth D. Merry user_ptr, kern_ptr, error); 1257a9934668SKenneth D. Merry goto bailout; 1258a9934668SKenneth D. Merry } 1259a9934668SKenneth D. Merry } 1260a9934668SKenneth D. Merry 1261a9934668SKenneth D. Merry if (user_sglist[i].ds_len == user_watermark) { 1262a9934668SKenneth D. Merry i++; 1263a9934668SKenneth D. Merry user_watermark = 0; 1264a9934668SKenneth D. Merry } 1265a9934668SKenneth D. Merry 1266a9934668SKenneth D. Merry if (kern_sglist[j].ds_len == kern_watermark) { 1267a9934668SKenneth D. Merry j++; 1268a9934668SKenneth D. Merry kern_watermark = 0; 1269a9934668SKenneth D. Merry } 1270a9934668SKenneth D. Merry } 1271a9934668SKenneth D. Merry 1272a9934668SKenneth D. Merry bailout: 1273a9934668SKenneth D. Merry 1274a9934668SKenneth D. Merry return (error); 1275a9934668SKenneth D. Merry } 1276a9934668SKenneth D. Merry 1277a9934668SKenneth D. Merry static int 1278a9934668SKenneth D. Merry passmemsetup(struct cam_periph *periph, struct pass_io_req *io_req) 1279a9934668SKenneth D. Merry { 1280a9934668SKenneth D. Merry union ccb *ccb; 1281a9934668SKenneth D. Merry struct pass_softc *softc; 1282a9934668SKenneth D. Merry int numbufs, i; 1283a9934668SKenneth D. Merry uint8_t **data_ptrs[CAM_PERIPH_MAXMAPS]; 1284a9934668SKenneth D. Merry uint32_t lengths[CAM_PERIPH_MAXMAPS]; 1285a9934668SKenneth D. Merry uint32_t dirs[CAM_PERIPH_MAXMAPS]; 1286a9934668SKenneth D. Merry uint32_t num_segs; 1287a9934668SKenneth D. Merry uint16_t *seg_cnt_ptr; 1288a9934668SKenneth D. Merry size_t maxmap; 1289a9934668SKenneth D. Merry int error; 1290a9934668SKenneth D. Merry 1291a9934668SKenneth D. Merry cam_periph_assert(periph, MA_NOTOWNED); 1292a9934668SKenneth D. Merry 1293a9934668SKenneth D. Merry softc = periph->softc; 1294a9934668SKenneth D. Merry 1295a9934668SKenneth D. Merry error = 0; 1296a9934668SKenneth D. Merry ccb = &io_req->ccb; 1297a9934668SKenneth D. Merry maxmap = 0; 1298a9934668SKenneth D. Merry num_segs = 0; 1299a9934668SKenneth D. Merry seg_cnt_ptr = NULL; 1300a9934668SKenneth D. Merry 1301a9934668SKenneth D. Merry switch(ccb->ccb_h.func_code) { 1302a9934668SKenneth D. Merry case XPT_DEV_MATCH: 1303a9934668SKenneth D. Merry if (ccb->cdm.match_buf_len == 0) { 1304a9934668SKenneth D. Merry printf("%s: invalid match buffer length 0\n", __func__); 1305a9934668SKenneth D. Merry return(EINVAL); 1306a9934668SKenneth D. Merry } 1307a9934668SKenneth D. Merry if (ccb->cdm.pattern_buf_len > 0) { 13087c5d20a6SWarner Losh data_ptrs[0] = (uint8_t **)&ccb->cdm.patterns; 1309a9934668SKenneth D. Merry lengths[0] = ccb->cdm.pattern_buf_len; 1310a9934668SKenneth D. Merry dirs[0] = CAM_DIR_OUT; 13117c5d20a6SWarner Losh data_ptrs[1] = (uint8_t **)&ccb->cdm.matches; 1312a9934668SKenneth D. Merry lengths[1] = ccb->cdm.match_buf_len; 1313a9934668SKenneth D. Merry dirs[1] = CAM_DIR_IN; 1314a9934668SKenneth D. Merry numbufs = 2; 1315a9934668SKenneth D. Merry } else { 13167c5d20a6SWarner Losh data_ptrs[0] = (uint8_t **)&ccb->cdm.matches; 1317a9934668SKenneth D. Merry lengths[0] = ccb->cdm.match_buf_len; 1318a9934668SKenneth D. Merry dirs[0] = CAM_DIR_IN; 1319a9934668SKenneth D. Merry numbufs = 1; 1320a9934668SKenneth D. Merry } 1321a9934668SKenneth D. Merry io_req->data_flags = CAM_DATA_VADDR; 1322a9934668SKenneth D. Merry break; 1323a9934668SKenneth D. Merry case XPT_SCSI_IO: 1324a9934668SKenneth D. Merry case XPT_CONT_TARGET_IO: 1325a9934668SKenneth D. Merry if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE) 1326a9934668SKenneth D. Merry return(0); 1327a9934668SKenneth D. Merry 1328a9934668SKenneth D. Merry /* 1329a9934668SKenneth D. Merry * The user shouldn't be able to supply a bio. 1330a9934668SKenneth D. Merry */ 1331a9934668SKenneth D. Merry if ((ccb->ccb_h.flags & CAM_DATA_MASK) == CAM_DATA_BIO) 1332a9934668SKenneth D. Merry return (EINVAL); 1333a9934668SKenneth D. Merry 1334a9934668SKenneth D. Merry io_req->data_flags = ccb->ccb_h.flags & CAM_DATA_MASK; 1335a9934668SKenneth D. Merry 1336a9934668SKenneth D. Merry data_ptrs[0] = &ccb->csio.data_ptr; 1337a9934668SKenneth D. Merry lengths[0] = ccb->csio.dxfer_len; 1338a9934668SKenneth D. Merry dirs[0] = ccb->ccb_h.flags & CAM_DIR_MASK; 1339a9934668SKenneth D. Merry num_segs = ccb->csio.sglist_cnt; 1340a9934668SKenneth D. Merry seg_cnt_ptr = &ccb->csio.sglist_cnt; 1341a9934668SKenneth D. Merry numbufs = 1; 1342a9934668SKenneth D. Merry maxmap = softc->maxio; 1343a9934668SKenneth D. Merry break; 1344a9934668SKenneth D. Merry case XPT_ATA_IO: 1345a9934668SKenneth D. Merry if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE) 1346a9934668SKenneth D. Merry return(0); 1347a9934668SKenneth D. Merry 1348a9934668SKenneth D. Merry /* 1349a9934668SKenneth D. Merry * We only support a single virtual address for ATA I/O. 1350a9934668SKenneth D. Merry */ 1351a9934668SKenneth D. Merry if ((ccb->ccb_h.flags & CAM_DATA_MASK) != CAM_DATA_VADDR) 1352a9934668SKenneth D. Merry return (EINVAL); 1353a9934668SKenneth D. Merry 1354a9934668SKenneth D. Merry io_req->data_flags = CAM_DATA_VADDR; 1355a9934668SKenneth D. Merry 1356a9934668SKenneth D. Merry data_ptrs[0] = &ccb->ataio.data_ptr; 1357a9934668SKenneth D. Merry lengths[0] = ccb->ataio.dxfer_len; 1358a9934668SKenneth D. Merry dirs[0] = ccb->ccb_h.flags & CAM_DIR_MASK; 1359a9934668SKenneth D. Merry numbufs = 1; 1360a9934668SKenneth D. Merry maxmap = softc->maxio; 1361a9934668SKenneth D. Merry break; 1362a9934668SKenneth D. Merry case XPT_SMP_IO: 1363a9934668SKenneth D. Merry io_req->data_flags = CAM_DATA_VADDR; 1364a9934668SKenneth D. Merry 1365a9934668SKenneth D. Merry data_ptrs[0] = &ccb->smpio.smp_request; 1366a9934668SKenneth D. Merry lengths[0] = ccb->smpio.smp_request_len; 1367a9934668SKenneth D. Merry dirs[0] = CAM_DIR_OUT; 1368a9934668SKenneth D. Merry data_ptrs[1] = &ccb->smpio.smp_response; 1369a9934668SKenneth D. Merry lengths[1] = ccb->smpio.smp_response_len; 1370a9934668SKenneth D. Merry dirs[1] = CAM_DIR_IN; 1371a9934668SKenneth D. Merry numbufs = 2; 1372a9934668SKenneth D. Merry maxmap = softc->maxio; 1373a9934668SKenneth D. Merry break; 1374a9934668SKenneth D. Merry case XPT_DEV_ADVINFO: 1375a9934668SKenneth D. Merry if (ccb->cdai.bufsiz == 0) 1376a9934668SKenneth D. Merry return (0); 1377a9934668SKenneth D. Merry 1378a9934668SKenneth D. Merry io_req->data_flags = CAM_DATA_VADDR; 1379a9934668SKenneth D. Merry 1380a9934668SKenneth D. Merry data_ptrs[0] = (uint8_t **)&ccb->cdai.buf; 1381a9934668SKenneth D. Merry lengths[0] = ccb->cdai.bufsiz; 1382a9934668SKenneth D. Merry dirs[0] = CAM_DIR_IN; 1383a9934668SKenneth D. Merry numbufs = 1; 1384a9934668SKenneth D. Merry break; 1385df424515SWarner Losh case XPT_NVME_ADMIN: 1386df424515SWarner Losh case XPT_NVME_IO: 1387df424515SWarner Losh if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE) 1388df424515SWarner Losh return (0); 1389df424515SWarner Losh 1390df424515SWarner Losh io_req->data_flags = ccb->ccb_h.flags & CAM_DATA_MASK; 1391df424515SWarner Losh 1392df424515SWarner Losh data_ptrs[0] = &ccb->nvmeio.data_ptr; 1393df424515SWarner Losh lengths[0] = ccb->nvmeio.dxfer_len; 1394df424515SWarner Losh dirs[0] = ccb->ccb_h.flags & CAM_DIR_MASK; 139551977281SWarner Losh num_segs = ccb->nvmeio.sglist_cnt; 139651977281SWarner Losh seg_cnt_ptr = &ccb->nvmeio.sglist_cnt; 1397df424515SWarner Losh numbufs = 1; 1398df424515SWarner Losh maxmap = softc->maxio; 1399df424515SWarner Losh break; 1400a9934668SKenneth D. Merry default: 1401a9934668SKenneth D. Merry return(EINVAL); 1402a9934668SKenneth D. Merry break; /* NOTREACHED */ 1403a9934668SKenneth D. Merry } 1404a9934668SKenneth D. Merry 1405a9934668SKenneth D. Merry io_req->num_bufs = numbufs; 1406a9934668SKenneth D. Merry 1407a9934668SKenneth D. Merry /* 1408a9934668SKenneth D. Merry * If there is a maximum, check to make sure that the user's 1409a9934668SKenneth D. Merry * request fits within the limit. In general, we should only have 1410a9934668SKenneth D. Merry * a maximum length for requests that go to hardware. Otherwise it 1411a9934668SKenneth D. Merry * is whatever we're able to malloc. 1412a9934668SKenneth D. Merry */ 1413a9934668SKenneth D. Merry for (i = 0; i < numbufs; i++) { 1414a9934668SKenneth D. Merry io_req->user_bufs[i] = *data_ptrs[i]; 1415a9934668SKenneth D. Merry io_req->dirs[i] = dirs[i]; 1416a9934668SKenneth D. Merry io_req->lengths[i] = lengths[i]; 1417a9934668SKenneth D. Merry 1418a9934668SKenneth D. Merry if (maxmap == 0) 1419a9934668SKenneth D. Merry continue; 1420a9934668SKenneth D. Merry 1421a9934668SKenneth D. Merry if (lengths[i] <= maxmap) 1422a9934668SKenneth D. Merry continue; 1423a9934668SKenneth D. Merry 1424a9934668SKenneth D. Merry xpt_print(periph->path, "%s: data length %u > max allowed %u " 1425a9934668SKenneth D. Merry "bytes\n", __func__, lengths[i], maxmap); 1426a9934668SKenneth D. Merry error = EINVAL; 1427a9934668SKenneth D. Merry goto bailout; 1428a9934668SKenneth D. Merry } 1429a9934668SKenneth D. Merry 1430a9934668SKenneth D. Merry switch (io_req->data_flags) { 1431a9934668SKenneth D. Merry case CAM_DATA_VADDR: 1432a9934668SKenneth D. Merry /* Map or copy the buffer into kernel address space */ 1433a9934668SKenneth D. Merry for (i = 0; i < numbufs; i++) { 1434a9934668SKenneth D. Merry uint8_t *tmp_buf; 1435a9934668SKenneth D. Merry 1436a9934668SKenneth D. Merry /* 1437a9934668SKenneth D. Merry * If for some reason no length is specified, we 1438a9934668SKenneth D. Merry * don't need to allocate anything. 1439a9934668SKenneth D. Merry */ 1440a9934668SKenneth D. Merry if (io_req->lengths[i] == 0) 1441a9934668SKenneth D. Merry continue; 1442a9934668SKenneth D. Merry 1443a9934668SKenneth D. Merry tmp_buf = malloc(lengths[i], M_SCSIPASS, 1444a9934668SKenneth D. Merry M_WAITOK | M_ZERO); 1445a9934668SKenneth D. Merry io_req->kern_bufs[i] = tmp_buf; 1446a9934668SKenneth D. Merry *data_ptrs[i] = tmp_buf; 1447a9934668SKenneth D. Merry 1448a9934668SKenneth D. Merry #if 0 1449a9934668SKenneth D. Merry xpt_print(periph->path, "%s: malloced %p len %u, user " 1450a9934668SKenneth D. Merry "buffer %p, operation: %s\n", __func__, 1451a9934668SKenneth D. Merry tmp_buf, lengths[i], io_req->user_bufs[i], 1452a9934668SKenneth D. Merry (dirs[i] == CAM_DIR_IN) ? "read" : "write"); 1453a9934668SKenneth D. Merry #endif 1454a9934668SKenneth D. Merry /* 1455a9934668SKenneth D. Merry * We only need to copy in if the user is writing. 1456a9934668SKenneth D. Merry */ 1457a9934668SKenneth D. Merry if (dirs[i] != CAM_DIR_OUT) 1458a9934668SKenneth D. Merry continue; 1459a9934668SKenneth D. Merry 1460a9934668SKenneth D. Merry error = copyin(io_req->user_bufs[i], 1461a9934668SKenneth D. Merry io_req->kern_bufs[i], lengths[i]); 1462a9934668SKenneth D. Merry if (error != 0) { 1463a9934668SKenneth D. Merry xpt_print(periph->path, "%s: copy of user " 1464a9934668SKenneth D. Merry "buffer from %p to %p failed with " 1465a9934668SKenneth D. Merry "error %d\n", __func__, 1466a9934668SKenneth D. Merry io_req->user_bufs[i], 1467a9934668SKenneth D. Merry io_req->kern_bufs[i], error); 1468a9934668SKenneth D. Merry goto bailout; 1469a9934668SKenneth D. Merry } 1470a9934668SKenneth D. Merry } 1471a9934668SKenneth D. Merry break; 1472a9934668SKenneth D. Merry case CAM_DATA_PADDR: 1473a9934668SKenneth D. Merry /* Pass down the pointer as-is */ 1474a9934668SKenneth D. Merry break; 1475a9934668SKenneth D. Merry case CAM_DATA_SG: { 1476a9934668SKenneth D. Merry size_t sg_length, size_to_go, alloc_size; 1477a9934668SKenneth D. Merry uint32_t num_segs_needed; 1478a9934668SKenneth D. Merry 1479a9934668SKenneth D. Merry /* 1480a9934668SKenneth D. Merry * Copy the user S/G list in, and then copy in the 1481a9934668SKenneth D. Merry * individual segments. 1482a9934668SKenneth D. Merry */ 1483a9934668SKenneth D. Merry /* 1484a9934668SKenneth D. Merry * We shouldn't see this, but check just in case. 1485a9934668SKenneth D. Merry */ 1486a9934668SKenneth D. Merry if (numbufs != 1) { 1487a9934668SKenneth D. Merry xpt_print(periph->path, "%s: cannot currently handle " 1488a9934668SKenneth D. Merry "more than one S/G list per CCB\n", __func__); 1489a9934668SKenneth D. Merry error = EINVAL; 1490a9934668SKenneth D. Merry goto bailout; 1491a9934668SKenneth D. Merry } 1492a9934668SKenneth D. Merry 1493a9934668SKenneth D. Merry /* 1494a9934668SKenneth D. Merry * We have to have at least one segment. 1495a9934668SKenneth D. Merry */ 1496a9934668SKenneth D. Merry if (num_segs == 0) { 1497a9934668SKenneth D. Merry xpt_print(periph->path, "%s: CAM_DATA_SG flag set, " 1498a9934668SKenneth D. Merry "but sglist_cnt=0!\n", __func__); 1499a9934668SKenneth D. Merry error = EINVAL; 1500a9934668SKenneth D. Merry goto bailout; 1501a9934668SKenneth D. Merry } 1502a9934668SKenneth D. Merry 1503a9934668SKenneth D. Merry /* 1504a9934668SKenneth D. Merry * Make sure the user specified the total length and didn't 1505a9934668SKenneth D. Merry * just leave it to us to decode the S/G list. 1506a9934668SKenneth D. Merry */ 1507a9934668SKenneth D. Merry if (lengths[0] == 0) { 1508a9934668SKenneth D. Merry xpt_print(periph->path, "%s: no dxfer_len specified, " 1509a9934668SKenneth D. Merry "but CAM_DATA_SG flag is set!\n", __func__); 1510a9934668SKenneth D. Merry error = EINVAL; 1511a9934668SKenneth D. Merry goto bailout; 1512a9934668SKenneth D. Merry } 1513a9934668SKenneth D. Merry 1514a9934668SKenneth D. Merry /* 1515a9934668SKenneth D. Merry * We allocate buffers in io_zone_size increments for an 1516cd853791SKonstantin Belousov * S/G list. This will generally be maxphys. 1517a9934668SKenneth D. Merry */ 1518a9934668SKenneth D. Merry if (lengths[0] <= softc->io_zone_size) 1519a9934668SKenneth D. Merry num_segs_needed = 1; 1520a9934668SKenneth D. Merry else { 1521a9934668SKenneth D. Merry num_segs_needed = lengths[0] / softc->io_zone_size; 1522a9934668SKenneth D. Merry if ((lengths[0] % softc->io_zone_size) != 0) 1523a9934668SKenneth D. Merry num_segs_needed++; 1524a9934668SKenneth D. Merry } 1525a9934668SKenneth D. Merry 1526a9934668SKenneth D. Merry /* Figure out the size of the S/G list */ 1527a9934668SKenneth D. Merry sg_length = num_segs * sizeof(bus_dma_segment_t); 1528a9934668SKenneth D. Merry io_req->num_user_segs = num_segs; 1529a9934668SKenneth D. Merry io_req->num_kern_segs = num_segs_needed; 1530a9934668SKenneth D. Merry 1531a9934668SKenneth D. Merry /* Save the user's S/G list pointer for later restoration */ 1532a9934668SKenneth D. Merry io_req->user_bufs[0] = *data_ptrs[0]; 1533a9934668SKenneth D. Merry 1534a9934668SKenneth D. Merry /* 1535a9934668SKenneth D. Merry * If we have enough segments allocated by default to handle 1536a9934668SKenneth D. Merry * the length of the user's S/G list, 1537a9934668SKenneth D. Merry */ 1538a9934668SKenneth D. Merry if (num_segs > PASS_MAX_SEGS) { 1539a9934668SKenneth D. Merry io_req->user_segptr = malloc(sizeof(bus_dma_segment_t) * 1540a9934668SKenneth D. Merry num_segs, M_SCSIPASS, M_WAITOK | M_ZERO); 1541a9934668SKenneth D. Merry io_req->flags |= PASS_IO_USER_SEG_MALLOC; 1542a9934668SKenneth D. Merry } else 1543a9934668SKenneth D. Merry io_req->user_segptr = io_req->user_segs; 1544a9934668SKenneth D. Merry 1545a9934668SKenneth D. Merry error = copyin(*data_ptrs[0], io_req->user_segptr, sg_length); 1546a9934668SKenneth D. Merry if (error != 0) { 1547a9934668SKenneth D. Merry xpt_print(periph->path, "%s: copy of user S/G list " 1548a9934668SKenneth D. Merry "from %p to %p failed with error %d\n", 1549a9934668SKenneth D. Merry __func__, *data_ptrs[0], io_req->user_segptr, 1550a9934668SKenneth D. Merry error); 1551a9934668SKenneth D. Merry goto bailout; 1552a9934668SKenneth D. Merry } 1553a9934668SKenneth D. Merry 1554a9934668SKenneth D. Merry if (num_segs_needed > PASS_MAX_SEGS) { 1555a9934668SKenneth D. Merry io_req->kern_segptr = malloc(sizeof(bus_dma_segment_t) * 1556a9934668SKenneth D. Merry num_segs_needed, M_SCSIPASS, M_WAITOK | M_ZERO); 1557a9934668SKenneth D. Merry io_req->flags |= PASS_IO_KERN_SEG_MALLOC; 1558a9934668SKenneth D. Merry } else { 1559a9934668SKenneth D. Merry io_req->kern_segptr = io_req->kern_segs; 1560a9934668SKenneth D. Merry } 1561a9934668SKenneth D. Merry 1562a9934668SKenneth D. Merry /* 1563a9934668SKenneth D. Merry * Allocate the kernel S/G list. 1564a9934668SKenneth D. Merry */ 1565a9934668SKenneth D. Merry for (size_to_go = lengths[0], i = 0; 1566a9934668SKenneth D. Merry size_to_go > 0 && i < num_segs_needed; 1567a9934668SKenneth D. Merry i++, size_to_go -= alloc_size) { 1568a9934668SKenneth D. Merry uint8_t *kern_ptr; 1569a9934668SKenneth D. Merry 1570a9934668SKenneth D. Merry alloc_size = min(size_to_go, softc->io_zone_size); 1571a9934668SKenneth D. Merry kern_ptr = uma_zalloc(softc->pass_io_zone, M_WAITOK); 1572a9934668SKenneth D. Merry io_req->kern_segptr[i].ds_addr = 1573a9934668SKenneth D. Merry (bus_addr_t)(uintptr_t)kern_ptr; 1574a9934668SKenneth D. Merry io_req->kern_segptr[i].ds_len = alloc_size; 1575a9934668SKenneth D. Merry } 1576a9934668SKenneth D. Merry if (size_to_go > 0) { 1577a9934668SKenneth D. Merry printf("%s: size_to_go = %zu, software error!\n", 1578a9934668SKenneth D. Merry __func__, size_to_go); 1579a9934668SKenneth D. Merry error = EINVAL; 1580a9934668SKenneth D. Merry goto bailout; 1581a9934668SKenneth D. Merry } 1582a9934668SKenneth D. Merry 1583a9934668SKenneth D. Merry *data_ptrs[0] = (uint8_t *)io_req->kern_segptr; 1584a9934668SKenneth D. Merry *seg_cnt_ptr = io_req->num_kern_segs; 1585a9934668SKenneth D. Merry 1586a9934668SKenneth D. Merry /* 1587a9934668SKenneth D. Merry * We only need to copy data here if the user is writing. 1588a9934668SKenneth D. Merry */ 1589a9934668SKenneth D. Merry if (dirs[0] == CAM_DIR_OUT) 1590a9934668SKenneth D. Merry error = passcopysglist(periph, io_req, dirs[0]); 1591a9934668SKenneth D. Merry break; 1592a9934668SKenneth D. Merry } 1593a9934668SKenneth D. Merry case CAM_DATA_SG_PADDR: { 1594a9934668SKenneth D. Merry size_t sg_length; 1595a9934668SKenneth D. Merry 1596a9934668SKenneth D. Merry /* 1597a9934668SKenneth D. Merry * We shouldn't see this, but check just in case. 1598a9934668SKenneth D. Merry */ 1599a9934668SKenneth D. Merry if (numbufs != 1) { 1600a9934668SKenneth D. Merry printf("%s: cannot currently handle more than one " 1601a9934668SKenneth D. Merry "S/G list per CCB\n", __func__); 1602a9934668SKenneth D. Merry error = EINVAL; 1603a9934668SKenneth D. Merry goto bailout; 1604a9934668SKenneth D. Merry } 1605a9934668SKenneth D. Merry 1606a9934668SKenneth D. Merry /* 1607a9934668SKenneth D. Merry * We have to have at least one segment. 1608a9934668SKenneth D. Merry */ 1609a9934668SKenneth D. Merry if (num_segs == 0) { 1610a9934668SKenneth D. Merry xpt_print(periph->path, "%s: CAM_DATA_SG_PADDR flag " 1611a9934668SKenneth D. Merry "set, but sglist_cnt=0!\n", __func__); 1612a9934668SKenneth D. Merry error = EINVAL; 1613a9934668SKenneth D. Merry goto bailout; 1614a9934668SKenneth D. Merry } 1615a9934668SKenneth D. Merry 1616a9934668SKenneth D. Merry /* 1617a9934668SKenneth D. Merry * Make sure the user specified the total length and didn't 1618a9934668SKenneth D. Merry * just leave it to us to decode the S/G list. 1619a9934668SKenneth D. Merry */ 1620a9934668SKenneth D. Merry if (lengths[0] == 0) { 1621a9934668SKenneth D. Merry xpt_print(periph->path, "%s: no dxfer_len specified, " 1622a9934668SKenneth D. Merry "but CAM_DATA_SG flag is set!\n", __func__); 1623a9934668SKenneth D. Merry error = EINVAL; 1624a9934668SKenneth D. Merry goto bailout; 1625a9934668SKenneth D. Merry } 1626a9934668SKenneth D. Merry 1627a9934668SKenneth D. Merry /* Figure out the size of the S/G list */ 1628a9934668SKenneth D. Merry sg_length = num_segs * sizeof(bus_dma_segment_t); 1629a9934668SKenneth D. Merry io_req->num_user_segs = num_segs; 1630a9934668SKenneth D. Merry io_req->num_kern_segs = io_req->num_user_segs; 1631a9934668SKenneth D. Merry 1632a9934668SKenneth D. Merry /* Save the user's S/G list pointer for later restoration */ 1633a9934668SKenneth D. Merry io_req->user_bufs[0] = *data_ptrs[0]; 1634a9934668SKenneth D. Merry 1635a9934668SKenneth D. Merry if (num_segs > PASS_MAX_SEGS) { 1636a9934668SKenneth D. Merry io_req->user_segptr = malloc(sizeof(bus_dma_segment_t) * 1637a9934668SKenneth D. Merry num_segs, M_SCSIPASS, M_WAITOK | M_ZERO); 1638a9934668SKenneth D. Merry io_req->flags |= PASS_IO_USER_SEG_MALLOC; 1639a9934668SKenneth D. Merry } else 1640a9934668SKenneth D. Merry io_req->user_segptr = io_req->user_segs; 1641a9934668SKenneth D. Merry 1642a9934668SKenneth D. Merry io_req->kern_segptr = io_req->user_segptr; 1643a9934668SKenneth D. Merry 1644a9934668SKenneth D. Merry error = copyin(*data_ptrs[0], io_req->user_segptr, sg_length); 1645a9934668SKenneth D. Merry if (error != 0) { 1646a9934668SKenneth D. Merry xpt_print(periph->path, "%s: copy of user S/G list " 1647a9934668SKenneth D. Merry "from %p to %p failed with error %d\n", 1648a9934668SKenneth D. Merry __func__, *data_ptrs[0], io_req->user_segptr, 1649a9934668SKenneth D. Merry error); 1650a9934668SKenneth D. Merry goto bailout; 1651a9934668SKenneth D. Merry } 1652a9934668SKenneth D. Merry break; 1653a9934668SKenneth D. Merry } 1654a9934668SKenneth D. Merry default: 1655a9934668SKenneth D. Merry case CAM_DATA_BIO: 1656a9934668SKenneth D. Merry /* 1657a9934668SKenneth D. Merry * A user shouldn't be attaching a bio to the CCB. It 1658a9934668SKenneth D. Merry * isn't a user-accessible structure. 1659a9934668SKenneth D. Merry */ 1660a9934668SKenneth D. Merry error = EINVAL; 1661a9934668SKenneth D. Merry break; 1662a9934668SKenneth D. Merry } 1663a9934668SKenneth D. Merry 1664a9934668SKenneth D. Merry bailout: 1665a9934668SKenneth D. Merry if (error != 0) 1666a9934668SKenneth D. Merry passiocleanup(softc, io_req); 1667a9934668SKenneth D. Merry 1668a9934668SKenneth D. Merry return (error); 1669a9934668SKenneth D. Merry } 1670a9934668SKenneth D. Merry 1671a9934668SKenneth D. Merry static int 1672a9934668SKenneth D. Merry passmemdone(struct cam_periph *periph, struct pass_io_req *io_req) 1673a9934668SKenneth D. Merry { 1674a9934668SKenneth D. Merry struct pass_softc *softc; 1675a9934668SKenneth D. Merry int error; 1676a9934668SKenneth D. Merry int i; 1677a9934668SKenneth D. Merry 1678a9934668SKenneth D. Merry error = 0; 1679a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 1680a9934668SKenneth D. Merry 1681a9934668SKenneth D. Merry switch (io_req->data_flags) { 1682a9934668SKenneth D. Merry case CAM_DATA_VADDR: 1683a9934668SKenneth D. Merry /* 1684a9934668SKenneth D. Merry * Copy back to the user buffer if this was a read. 1685a9934668SKenneth D. Merry */ 1686a9934668SKenneth D. Merry for (i = 0; i < io_req->num_bufs; i++) { 1687a9934668SKenneth D. Merry if (io_req->dirs[i] != CAM_DIR_IN) 1688a9934668SKenneth D. Merry continue; 1689a9934668SKenneth D. Merry 1690a9934668SKenneth D. Merry error = copyout(io_req->kern_bufs[i], 1691a9934668SKenneth D. Merry io_req->user_bufs[i], io_req->lengths[i]); 1692a9934668SKenneth D. Merry if (error != 0) { 1693a9934668SKenneth D. Merry xpt_print(periph->path, "Unable to copy %u " 1694a9934668SKenneth D. Merry "bytes from %p to user address %p\n", 1695a9934668SKenneth D. Merry io_req->lengths[i], 1696a9934668SKenneth D. Merry io_req->kern_bufs[i], 1697a9934668SKenneth D. Merry io_req->user_bufs[i]); 1698a9934668SKenneth D. Merry goto bailout; 1699a9934668SKenneth D. Merry } 1700a9934668SKenneth D. Merry } 1701a9934668SKenneth D. Merry break; 1702a9934668SKenneth D. Merry case CAM_DATA_PADDR: 1703a9934668SKenneth D. Merry /* Do nothing. The pointer is a physical address already */ 1704a9934668SKenneth D. Merry break; 1705a9934668SKenneth D. Merry case CAM_DATA_SG: 1706a9934668SKenneth D. Merry /* 1707a9934668SKenneth D. Merry * Copy back to the user buffer if this was a read. 1708a9934668SKenneth D. Merry * Restore the user's S/G list buffer pointer. 1709a9934668SKenneth D. Merry */ 1710a9934668SKenneth D. Merry if (io_req->dirs[0] == CAM_DIR_IN) 1711a9934668SKenneth D. Merry error = passcopysglist(periph, io_req, io_req->dirs[0]); 1712a9934668SKenneth D. Merry break; 1713a9934668SKenneth D. Merry case CAM_DATA_SG_PADDR: 1714a9934668SKenneth D. Merry /* 1715a9934668SKenneth D. Merry * Restore the user's S/G list buffer pointer. No need to 1716a9934668SKenneth D. Merry * copy. 1717a9934668SKenneth D. Merry */ 1718a9934668SKenneth D. Merry break; 1719a9934668SKenneth D. Merry default: 1720a9934668SKenneth D. Merry case CAM_DATA_BIO: 1721a9934668SKenneth D. Merry error = EINVAL; 1722a9934668SKenneth D. Merry break; 1723a9934668SKenneth D. Merry } 1724a9934668SKenneth D. Merry 1725a9934668SKenneth D. Merry bailout: 1726a9934668SKenneth D. Merry /* 1727a9934668SKenneth D. Merry * Reset the user's pointers to their original values and free 1728a9934668SKenneth D. Merry * allocated memory. 1729a9934668SKenneth D. Merry */ 1730a9934668SKenneth D. Merry passiocleanup(softc, io_req); 1731a9934668SKenneth D. Merry 1732a9934668SKenneth D. Merry return (error); 1733a9934668SKenneth D. Merry } 1734a9934668SKenneth D. Merry 173576babe50SJustin T. Gibbs static int 173689c9c53dSPoul-Henning Kamp passioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 173776babe50SJustin T. Gibbs { 173825a2902cSScott Long int error; 173925a2902cSScott Long 174025a2902cSScott Long if ((error = passdoioctl(dev, cmd, addr, flag, td)) == ENOTTY) { 1741f564de00SScott Long error = cam_compat_ioctl(dev, cmd, addr, flag, td, passdoioctl); 174225a2902cSScott Long } 174325a2902cSScott Long return (error); 174425a2902cSScott Long } 174525a2902cSScott Long 174625a2902cSScott Long static int 174725a2902cSScott Long passdoioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 174825a2902cSScott Long { 174976babe50SJustin T. Gibbs struct cam_periph *periph; 1750a9934668SKenneth D. Merry struct pass_softc *softc; 175176babe50SJustin T. Gibbs int error; 17528cff7eb8SAlexander Motin uint32_t priority; 175376babe50SJustin T. Gibbs 1754e2a5fdf9SNate Lawson periph = (struct cam_periph *)dev->si_drv1; 17552b83592fSScott Long cam_periph_lock(periph); 1756a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 175776babe50SJustin T. Gibbs 175876babe50SJustin T. Gibbs error = 0; 175976babe50SJustin T. Gibbs 176076babe50SJustin T. Gibbs switch (cmd) { 176176babe50SJustin T. Gibbs case CAMIOCOMMAND: 176276babe50SJustin T. Gibbs { 176376babe50SJustin T. Gibbs union ccb *inccb; 176476babe50SJustin T. Gibbs union ccb *ccb; 17659deea857SKenneth D. Merry int ccb_malloced; 176676babe50SJustin T. Gibbs 176776babe50SJustin T. Gibbs inccb = (union ccb *)addr; 17688fc77fffSConrad Meyer #if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING) 17698fc77fffSConrad Meyer if (inccb->ccb_h.func_code == XPT_SCSI_IO) 17708fc77fffSConrad Meyer inccb->csio.bio = NULL; 17718fc77fffSConrad Meyer #endif 17729deea857SKenneth D. Merry 1773a0bbf9e0SMark Johnston if (inccb->ccb_h.flags & CAM_UNLOCKED) { 1774a0bbf9e0SMark Johnston error = EINVAL; 1775a0bbf9e0SMark Johnston break; 1776a0bbf9e0SMark Johnston } 1777a0bbf9e0SMark Johnston 17789deea857SKenneth D. Merry /* 17799deea857SKenneth D. Merry * Some CCB types, like scan bus and scan lun can only go 17809deea857SKenneth D. Merry * through the transport layer device. 17819deea857SKenneth D. Merry */ 17829deea857SKenneth D. Merry if (inccb->ccb_h.func_code & XPT_FC_XPT_ONLY) { 1783f0d9af51SMatt Jacob xpt_print(periph->path, "CCB function code %#x is " 1784f0d9af51SMatt Jacob "restricted to the XPT device\n", 1785f0d9af51SMatt Jacob inccb->ccb_h.func_code); 17869deea857SKenneth D. Merry error = ENODEV; 17879deea857SKenneth D. Merry break; 17889deea857SKenneth D. Merry } 17899deea857SKenneth D. Merry 17908cff7eb8SAlexander Motin /* Compatibility for RL/priority-unaware code. */ 17918cff7eb8SAlexander Motin priority = inccb->ccb_h.pinfo.priority; 1792cccf4220SAlexander Motin if (priority <= CAM_PRIORITY_OOB) 1793cccf4220SAlexander Motin priority += CAM_PRIORITY_OOB + 1; 17948cff7eb8SAlexander Motin 17959deea857SKenneth D. Merry /* 17969deea857SKenneth D. Merry * Non-immediate CCBs need a CCB from the per-device pool 17979deea857SKenneth D. Merry * of CCBs, which is scheduled by the transport layer. 17989deea857SKenneth D. Merry * Immediate CCBs and user-supplied CCBs should just be 17999deea857SKenneth D. Merry * malloced. 18009deea857SKenneth D. Merry */ 18019deea857SKenneth D. Merry if ((inccb->ccb_h.func_code & XPT_FC_QUEUED) 18029deea857SKenneth D. Merry && ((inccb->ccb_h.func_code & XPT_FC_USER_CCB) == 0)) { 18038cff7eb8SAlexander Motin ccb = cam_periph_getccb(periph, priority); 18049deea857SKenneth D. Merry ccb_malloced = 0; 18059deea857SKenneth D. Merry } else { 18068008a935SScott Long ccb = xpt_alloc_ccb_nowait(); 18079deea857SKenneth D. Merry 18089deea857SKenneth D. Merry if (ccb != NULL) 18099deea857SKenneth D. Merry xpt_setup_ccb(&ccb->ccb_h, periph->path, 18108cff7eb8SAlexander Motin priority); 18119deea857SKenneth D. Merry ccb_malloced = 1; 18129deea857SKenneth D. Merry } 18139deea857SKenneth D. Merry 18149deea857SKenneth D. Merry if (ccb == NULL) { 1815f0d9af51SMatt Jacob xpt_print(periph->path, "unable to allocate CCB\n"); 18169deea857SKenneth D. Merry error = ENOMEM; 18179deea857SKenneth D. Merry break; 18189deea857SKenneth D. Merry } 181976babe50SJustin T. Gibbs 182076babe50SJustin T. Gibbs error = passsendccb(periph, ccb, inccb); 182176babe50SJustin T. Gibbs 18229deea857SKenneth D. Merry if (ccb_malloced) 18239deea857SKenneth D. Merry xpt_free_ccb(ccb); 18249deea857SKenneth D. Merry else 182576babe50SJustin T. Gibbs xpt_release_ccb(ccb); 182676babe50SJustin T. Gibbs 182776babe50SJustin T. Gibbs break; 182876babe50SJustin T. Gibbs } 1829a9934668SKenneth D. Merry case CAMIOQUEUE: 1830a9934668SKenneth D. Merry { 1831a9934668SKenneth D. Merry struct pass_io_req *io_req; 1832a9934668SKenneth D. Merry union ccb **user_ccb, *ccb; 1833a9934668SKenneth D. Merry xpt_opcode fc; 1834a9934668SKenneth D. Merry 1835871dc983SBrooks Davis #ifdef COMPAT_FREEBSD32 1836871dc983SBrooks Davis if (SV_PROC_FLAG(td->td_proc, SV_ILP32)) { 1837871dc983SBrooks Davis error = ENOTTY; 1838871dc983SBrooks Davis goto bailout; 1839871dc983SBrooks Davis } 1840871dc983SBrooks Davis #endif 1841a9934668SKenneth D. Merry if ((softc->flags & PASS_FLAG_ZONE_VALID) == 0) { 1842a9934668SKenneth D. Merry error = passcreatezone(periph); 1843a9934668SKenneth D. Merry if (error != 0) 1844a9934668SKenneth D. Merry goto bailout; 1845a9934668SKenneth D. Merry } 1846a9934668SKenneth D. Merry 1847a9934668SKenneth D. Merry /* 1848a9934668SKenneth D. Merry * We're going to do a blocking allocation for this I/O 1849a9934668SKenneth D. Merry * request, so we have to drop the lock. 1850a9934668SKenneth D. Merry */ 1851a9934668SKenneth D. Merry cam_periph_unlock(periph); 1852a9934668SKenneth D. Merry 1853a9934668SKenneth D. Merry io_req = uma_zalloc(softc->pass_zone, M_WAITOK | M_ZERO); 1854a9934668SKenneth D. Merry ccb = &io_req->ccb; 1855a9934668SKenneth D. Merry user_ccb = (union ccb **)addr; 1856a9934668SKenneth D. Merry 1857a9934668SKenneth D. Merry /* 1858a9934668SKenneth D. Merry * Unlike the CAMIOCOMMAND ioctl above, we only have a 1859a9934668SKenneth D. Merry * pointer to the user's CCB, so we have to copy the whole 1860a9934668SKenneth D. Merry * thing in to a buffer we have allocated (above) instead 1861a9934668SKenneth D. Merry * of allowing the ioctl code to malloc a buffer and copy 1862a9934668SKenneth D. Merry * it in. 1863a9934668SKenneth D. Merry * 1864a9934668SKenneth D. Merry * This is an advantage for this asynchronous interface, 1865a9934668SKenneth D. Merry * since we don't want the memory to get freed while the 1866a9934668SKenneth D. Merry * CCB is outstanding. 1867a9934668SKenneth D. Merry */ 1868a9934668SKenneth D. Merry #if 0 1869a9934668SKenneth D. Merry xpt_print(periph->path, "Copying user CCB %p to " 1870a9934668SKenneth D. Merry "kernel address %p\n", *user_ccb, ccb); 1871a9934668SKenneth D. Merry #endif 1872a9934668SKenneth D. Merry error = copyin(*user_ccb, ccb, sizeof(*ccb)); 1873a9934668SKenneth D. Merry if (error != 0) { 1874a9934668SKenneth D. Merry xpt_print(periph->path, "Copy of user CCB %p to " 1875a9934668SKenneth D. Merry "kernel address %p failed with error %d\n", 1876a9934668SKenneth D. Merry *user_ccb, ccb, error); 1877a0bbf9e0SMark Johnston goto camioqueue_error; 1878a9934668SKenneth D. Merry } 18798fc77fffSConrad Meyer #if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING) 18808fc77fffSConrad Meyer if (ccb->ccb_h.func_code == XPT_SCSI_IO) 18818fc77fffSConrad Meyer ccb->csio.bio = NULL; 18828fc77fffSConrad Meyer #endif 1883a9934668SKenneth D. Merry 1884a0bbf9e0SMark Johnston if (ccb->ccb_h.flags & CAM_UNLOCKED) { 1885a0bbf9e0SMark Johnston error = EINVAL; 1886a0bbf9e0SMark Johnston goto camioqueue_error; 1887a0bbf9e0SMark Johnston } 1888a0bbf9e0SMark Johnston 1889a1a604caSAlexander Motin if (ccb->ccb_h.flags & CAM_CDB_POINTER) { 1890a1a604caSAlexander Motin if (ccb->csio.cdb_len > IOCDBLEN) { 1891a1a604caSAlexander Motin error = EINVAL; 1892a0bbf9e0SMark Johnston goto camioqueue_error; 1893a1a604caSAlexander Motin } 1894a1a604caSAlexander Motin error = copyin(ccb->csio.cdb_io.cdb_ptr, 1895a1a604caSAlexander Motin ccb->csio.cdb_io.cdb_bytes, ccb->csio.cdb_len); 1896a0bbf9e0SMark Johnston if (error != 0) 1897a0bbf9e0SMark Johnston goto camioqueue_error; 1898a1a604caSAlexander Motin ccb->ccb_h.flags &= ~CAM_CDB_POINTER; 1899a1a604caSAlexander Motin } 1900a1a604caSAlexander Motin 1901a9934668SKenneth D. Merry /* 1902a9934668SKenneth D. Merry * Some CCB types, like scan bus and scan lun can only go 1903a9934668SKenneth D. Merry * through the transport layer device. 1904a9934668SKenneth D. Merry */ 1905a9934668SKenneth D. Merry if (ccb->ccb_h.func_code & XPT_FC_XPT_ONLY) { 1906a9934668SKenneth D. Merry xpt_print(periph->path, "CCB function code %#x is " 1907a9934668SKenneth D. Merry "restricted to the XPT device\n", 1908a9934668SKenneth D. Merry ccb->ccb_h.func_code); 1909a9934668SKenneth D. Merry error = ENODEV; 1910a0bbf9e0SMark Johnston goto camioqueue_error; 1911a9934668SKenneth D. Merry } 1912a9934668SKenneth D. Merry 1913a9934668SKenneth D. Merry /* 1914a9934668SKenneth D. Merry * Save the user's CCB pointer as well as his linked list 1915a9934668SKenneth D. Merry * pointers and peripheral private area so that we can 1916a9934668SKenneth D. Merry * restore these later. 1917a9934668SKenneth D. Merry */ 1918a9934668SKenneth D. Merry io_req->user_ccb_ptr = *user_ccb; 1919a9934668SKenneth D. Merry io_req->user_periph_links = ccb->ccb_h.periph_links; 1920a9934668SKenneth D. Merry io_req->user_periph_priv = ccb->ccb_h.periph_priv; 1921a9934668SKenneth D. Merry 1922a9934668SKenneth D. Merry /* 1923a9934668SKenneth D. Merry * Now that we've saved the user's values, we can set our 1924a9934668SKenneth D. Merry * own peripheral private entry. 1925a9934668SKenneth D. Merry */ 1926a9934668SKenneth D. Merry ccb->ccb_h.ccb_ioreq = io_req; 1927a9934668SKenneth D. Merry 1928a9934668SKenneth D. Merry /* Compatibility for RL/priority-unaware code. */ 1929a9934668SKenneth D. Merry priority = ccb->ccb_h.pinfo.priority; 1930a9934668SKenneth D. Merry if (priority <= CAM_PRIORITY_OOB) 1931a9934668SKenneth D. Merry priority += CAM_PRIORITY_OOB + 1; 1932a9934668SKenneth D. Merry 1933a9934668SKenneth D. Merry /* 1934a9934668SKenneth D. Merry * Setup fields in the CCB like the path and the priority. 1935a9934668SKenneth D. Merry * The path in particular cannot be done in userland, since 1936a9934668SKenneth D. Merry * it is a pointer to a kernel data structure. 1937a9934668SKenneth D. Merry */ 1938a9934668SKenneth D. Merry xpt_setup_ccb_flags(&ccb->ccb_h, periph->path, priority, 1939a9934668SKenneth D. Merry ccb->ccb_h.flags); 1940a9934668SKenneth D. Merry 1941a9934668SKenneth D. Merry /* 1942a9934668SKenneth D. Merry * Setup our done routine. There is no way for the user to 1943a9934668SKenneth D. Merry * have a valid pointer here. 1944a9934668SKenneth D. Merry */ 1945a9934668SKenneth D. Merry ccb->ccb_h.cbfcnp = passdone; 1946a9934668SKenneth D. Merry 1947a9934668SKenneth D. Merry fc = ccb->ccb_h.func_code; 1948a9934668SKenneth D. Merry /* 1949a9934668SKenneth D. Merry * If this function code has memory that can be mapped in 1950a9934668SKenneth D. Merry * or out, we need to call passmemsetup(). 1951a9934668SKenneth D. Merry */ 1952a9934668SKenneth D. Merry if ((fc == XPT_SCSI_IO) || (fc == XPT_ATA_IO) 1953a9934668SKenneth D. Merry || (fc == XPT_SMP_IO) || (fc == XPT_DEV_MATCH) 1954df424515SWarner Losh || (fc == XPT_DEV_ADVINFO) 1955df424515SWarner Losh || (fc == XPT_NVME_ADMIN) || (fc == XPT_NVME_IO)) { 1956a9934668SKenneth D. Merry error = passmemsetup(periph, io_req); 1957a0bbf9e0SMark Johnston if (error != 0) 1958a0bbf9e0SMark Johnston goto camioqueue_error; 1959a9934668SKenneth D. Merry } else 1960a9934668SKenneth D. Merry io_req->mapinfo.num_bufs_used = 0; 1961a9934668SKenneth D. Merry 1962a9934668SKenneth D. Merry cam_periph_lock(periph); 1963a9934668SKenneth D. Merry 1964a9934668SKenneth D. Merry /* 1965a9934668SKenneth D. Merry * Everything goes on the incoming queue initially. 1966a9934668SKenneth D. Merry */ 1967a9934668SKenneth D. Merry TAILQ_INSERT_TAIL(&softc->incoming_queue, io_req, links); 1968a9934668SKenneth D. Merry 1969a9934668SKenneth D. Merry /* 1970a9934668SKenneth D. Merry * If the CCB is queued, and is not a user CCB, then 1971a9934668SKenneth D. Merry * we need to allocate a slot for it. Call xpt_schedule() 1972a9934668SKenneth D. Merry * so that our start routine will get called when a CCB is 1973a9934668SKenneth D. Merry * available. 1974a9934668SKenneth D. Merry */ 1975a9934668SKenneth D. Merry if ((fc & XPT_FC_QUEUED) 1976a9934668SKenneth D. Merry && ((fc & XPT_FC_USER_CCB) == 0)) { 1977a9934668SKenneth D. Merry xpt_schedule(periph, priority); 1978a9934668SKenneth D. Merry break; 1979a9934668SKenneth D. Merry } 1980a9934668SKenneth D. Merry 1981a9934668SKenneth D. Merry /* 1982a9934668SKenneth D. Merry * At this point, the CCB in question is either an 1983a9934668SKenneth D. Merry * immediate CCB (like XPT_DEV_ADVINFO) or it is a user CCB 1984a9934668SKenneth D. Merry * and therefore should be malloced, not allocated via a slot. 1985a9934668SKenneth D. Merry * Remove the CCB from the incoming queue and add it to the 1986a9934668SKenneth D. Merry * active queue. 1987a9934668SKenneth D. Merry */ 1988a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->incoming_queue, io_req, links); 1989a9934668SKenneth D. Merry TAILQ_INSERT_TAIL(&softc->active_queue, io_req, links); 1990a9934668SKenneth D. Merry 1991a9934668SKenneth D. Merry xpt_action(ccb); 1992a9934668SKenneth D. Merry 1993a9934668SKenneth D. Merry /* 1994a9934668SKenneth D. Merry * If this is not a queued CCB (i.e. it is an immediate CCB), 1995a9934668SKenneth D. Merry * then it is already done. We need to put it on the done 1996a9934668SKenneth D. Merry * queue for the user to fetch. 1997a9934668SKenneth D. Merry */ 1998a9934668SKenneth D. Merry if ((fc & XPT_FC_QUEUED) == 0) { 1999a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->active_queue, io_req, links); 2000a9934668SKenneth D. Merry TAILQ_INSERT_TAIL(&softc->done_queue, io_req, links); 2001a9934668SKenneth D. Merry } 2002a9934668SKenneth D. Merry break; 2003a0bbf9e0SMark Johnston 2004a0bbf9e0SMark Johnston camioqueue_error: 2005a0bbf9e0SMark Johnston uma_zfree(softc->pass_zone, io_req); 2006a0bbf9e0SMark Johnston cam_periph_lock(periph); 2007a0bbf9e0SMark Johnston break; 2008a9934668SKenneth D. Merry } 2009a9934668SKenneth D. Merry case CAMIOGET: 2010a9934668SKenneth D. Merry { 2011a9934668SKenneth D. Merry union ccb **user_ccb; 2012a9934668SKenneth D. Merry struct pass_io_req *io_req; 2013a9934668SKenneth D. Merry int old_error; 2014a9934668SKenneth D. Merry 2015871dc983SBrooks Davis #ifdef COMPAT_FREEBSD32 2016871dc983SBrooks Davis if (SV_PROC_FLAG(td->td_proc, SV_ILP32)) { 2017871dc983SBrooks Davis error = ENOTTY; 2018871dc983SBrooks Davis goto bailout; 2019871dc983SBrooks Davis } 2020871dc983SBrooks Davis #endif 2021a9934668SKenneth D. Merry user_ccb = (union ccb **)addr; 2022a9934668SKenneth D. Merry old_error = 0; 2023a9934668SKenneth D. Merry 2024a9934668SKenneth D. Merry io_req = TAILQ_FIRST(&softc->done_queue); 2025a9934668SKenneth D. Merry if (io_req == NULL) { 2026a9934668SKenneth D. Merry error = ENOENT; 2027a9934668SKenneth D. Merry break; 2028a9934668SKenneth D. Merry } 2029a9934668SKenneth D. Merry 2030a9934668SKenneth D. Merry /* 2031a9934668SKenneth D. Merry * Remove the I/O from the done queue. 2032a9934668SKenneth D. Merry */ 2033a9934668SKenneth D. Merry TAILQ_REMOVE(&softc->done_queue, io_req, links); 2034a9934668SKenneth D. Merry 2035a9934668SKenneth D. Merry /* 2036a9934668SKenneth D. Merry * We have to drop the lock during the copyout because the 2037a9934668SKenneth D. Merry * copyout can result in VM faults that require sleeping. 2038a9934668SKenneth D. Merry */ 2039a9934668SKenneth D. Merry cam_periph_unlock(periph); 2040a9934668SKenneth D. Merry 2041a9934668SKenneth D. Merry /* 2042a9934668SKenneth D. Merry * Do any needed copies (e.g. for reads) and revert the 2043a9934668SKenneth D. Merry * pointers in the CCB back to the user's pointers. 2044a9934668SKenneth D. Merry */ 2045a9934668SKenneth D. Merry error = passmemdone(periph, io_req); 2046a9934668SKenneth D. Merry 2047a9934668SKenneth D. Merry old_error = error; 2048a9934668SKenneth D. Merry 2049a9934668SKenneth D. Merry io_req->ccb.ccb_h.periph_links = io_req->user_periph_links; 2050a9934668SKenneth D. Merry io_req->ccb.ccb_h.periph_priv = io_req->user_periph_priv; 2051a9934668SKenneth D. Merry 2052a9934668SKenneth D. Merry #if 0 2053a9934668SKenneth D. Merry xpt_print(periph->path, "Copying to user CCB %p from " 2054a9934668SKenneth D. Merry "kernel address %p\n", *user_ccb, &io_req->ccb); 2055a9934668SKenneth D. Merry #endif 2056a9934668SKenneth D. Merry 2057a9934668SKenneth D. Merry error = copyout(&io_req->ccb, *user_ccb, sizeof(union ccb)); 2058a9934668SKenneth D. Merry if (error != 0) { 2059a9934668SKenneth D. Merry xpt_print(periph->path, "Copy to user CCB %p from " 2060a9934668SKenneth D. Merry "kernel address %p failed with error %d\n", 2061a9934668SKenneth D. Merry *user_ccb, &io_req->ccb, error); 2062a9934668SKenneth D. Merry } 2063a9934668SKenneth D. Merry 2064a9934668SKenneth D. Merry /* 2065a9934668SKenneth D. Merry * Prefer the first error we got back, and make sure we 2066a9934668SKenneth D. Merry * don't overwrite bad status with good. 2067a9934668SKenneth D. Merry */ 2068a9934668SKenneth D. Merry if (old_error != 0) 2069a9934668SKenneth D. Merry error = old_error; 2070a9934668SKenneth D. Merry 2071a9934668SKenneth D. Merry cam_periph_lock(periph); 2072a9934668SKenneth D. Merry 2073a9934668SKenneth D. Merry /* 2074a9934668SKenneth D. Merry * At this point, if there was an error, we could potentially 2075a9934668SKenneth D. Merry * re-queue the I/O and try again. But why? The error 2076a9934668SKenneth D. Merry * would almost certainly happen again. We might as well 2077a9934668SKenneth D. Merry * not leak memory. 2078a9934668SKenneth D. Merry */ 2079a9934668SKenneth D. Merry uma_zfree(softc->pass_zone, io_req); 2080a9934668SKenneth D. Merry break; 2081a9934668SKenneth D. Merry } 208276babe50SJustin T. Gibbs default: 208376babe50SJustin T. Gibbs error = cam_periph_ioctl(periph, cmd, addr, passerror); 208476babe50SJustin T. Gibbs break; 208576babe50SJustin T. Gibbs } 208676babe50SJustin T. Gibbs 2087a9934668SKenneth D. Merry bailout: 20882b83592fSScott Long cam_periph_unlock(periph); 2089a9934668SKenneth D. Merry 209076babe50SJustin T. Gibbs return(error); 209176babe50SJustin T. Gibbs } 209276babe50SJustin T. Gibbs 2093a9934668SKenneth D. Merry static int 2094a9934668SKenneth D. Merry passpoll(struct cdev *dev, int poll_events, struct thread *td) 2095a9934668SKenneth D. Merry { 2096a9934668SKenneth D. Merry struct cam_periph *periph; 2097a9934668SKenneth D. Merry struct pass_softc *softc; 2098a9934668SKenneth D. Merry int revents; 2099a9934668SKenneth D. Merry 2100a9934668SKenneth D. Merry periph = (struct cam_periph *)dev->si_drv1; 2101a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 2102a9934668SKenneth D. Merry 2103a9934668SKenneth D. Merry revents = poll_events & (POLLOUT | POLLWRNORM); 2104a9934668SKenneth D. Merry if ((poll_events & (POLLIN | POLLRDNORM)) != 0) { 2105a9934668SKenneth D. Merry cam_periph_lock(periph); 2106a9934668SKenneth D. Merry 2107a9934668SKenneth D. Merry if (!TAILQ_EMPTY(&softc->done_queue)) { 2108a9934668SKenneth D. Merry revents |= poll_events & (POLLIN | POLLRDNORM); 2109a9934668SKenneth D. Merry } 2110a9934668SKenneth D. Merry cam_periph_unlock(periph); 2111a9934668SKenneth D. Merry if (revents == 0) 2112a9934668SKenneth D. Merry selrecord(td, &softc->read_select); 2113a9934668SKenneth D. Merry } 2114a9934668SKenneth D. Merry 2115a9934668SKenneth D. Merry return (revents); 2116a9934668SKenneth D. Merry } 2117a9934668SKenneth D. Merry 2118a9934668SKenneth D. Merry static int 2119a9934668SKenneth D. Merry passkqfilter(struct cdev *dev, struct knote *kn) 2120a9934668SKenneth D. Merry { 2121a9934668SKenneth D. Merry struct cam_periph *periph; 2122a9934668SKenneth D. Merry struct pass_softc *softc; 2123a9934668SKenneth D. Merry 2124a9934668SKenneth D. Merry periph = (struct cam_periph *)dev->si_drv1; 2125a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 2126a9934668SKenneth D. Merry 2127a9934668SKenneth D. Merry kn->kn_hook = (caddr_t)periph; 2128a9934668SKenneth D. Merry kn->kn_fop = &passread_filtops; 2129a9934668SKenneth D. Merry knlist_add(&softc->read_select.si_note, kn, 0); 2130a9934668SKenneth D. Merry 2131a9934668SKenneth D. Merry return (0); 2132a9934668SKenneth D. Merry } 2133a9934668SKenneth D. Merry 2134a9934668SKenneth D. Merry static void 2135a9934668SKenneth D. Merry passreadfiltdetach(struct knote *kn) 2136a9934668SKenneth D. Merry { 2137a9934668SKenneth D. Merry struct cam_periph *periph; 2138a9934668SKenneth D. Merry struct pass_softc *softc; 2139a9934668SKenneth D. Merry 2140a9934668SKenneth D. Merry periph = (struct cam_periph *)kn->kn_hook; 2141a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 2142a9934668SKenneth D. Merry 2143a9934668SKenneth D. Merry knlist_remove(&softc->read_select.si_note, kn, 0); 2144a9934668SKenneth D. Merry } 2145a9934668SKenneth D. Merry 2146a9934668SKenneth D. Merry static int 2147a9934668SKenneth D. Merry passreadfilt(struct knote *kn, long hint) 2148a9934668SKenneth D. Merry { 2149a9934668SKenneth D. Merry struct cam_periph *periph; 2150a9934668SKenneth D. Merry struct pass_softc *softc; 2151a9934668SKenneth D. Merry int retval; 2152a9934668SKenneth D. Merry 2153a9934668SKenneth D. Merry periph = (struct cam_periph *)kn->kn_hook; 2154a9934668SKenneth D. Merry softc = (struct pass_softc *)periph->softc; 2155a9934668SKenneth D. Merry 2156a9934668SKenneth D. Merry cam_periph_assert(periph, MA_OWNED); 2157a9934668SKenneth D. Merry 2158a9934668SKenneth D. Merry if (TAILQ_EMPTY(&softc->done_queue)) 2159a9934668SKenneth D. Merry retval = 0; 2160a9934668SKenneth D. Merry else 2161a9934668SKenneth D. Merry retval = 1; 2162a9934668SKenneth D. Merry 2163a9934668SKenneth D. Merry return (retval); 2164a9934668SKenneth D. Merry } 2165a9934668SKenneth D. Merry 216676babe50SJustin T. Gibbs /* 216776babe50SJustin T. Gibbs * Generally, "ccb" should be the CCB supplied by the kernel. "inccb" 216876babe50SJustin T. Gibbs * should be the CCB that is copied in from the user. 216976babe50SJustin T. Gibbs */ 217076babe50SJustin T. Gibbs static int 217176babe50SJustin T. Gibbs passsendccb(struct cam_periph *periph, union ccb *ccb, union ccb *inccb) 217276babe50SJustin T. Gibbs { 217376babe50SJustin T. Gibbs struct pass_softc *softc; 217476babe50SJustin T. Gibbs struct cam_periph_map_info mapinfo; 2175a1a604caSAlexander Motin uint8_t *cmd; 217695fbded6SScott Long xpt_opcode fc; 217795fbded6SScott Long int error; 217876babe50SJustin T. Gibbs 217976babe50SJustin T. Gibbs softc = (struct pass_softc *)periph->softc; 218076babe50SJustin T. Gibbs 218176babe50SJustin T. Gibbs /* 218276babe50SJustin T. Gibbs * There are some fields in the CCB header that need to be 218376babe50SJustin T. Gibbs * preserved, the rest we get from the user. 218476babe50SJustin T. Gibbs */ 218576babe50SJustin T. Gibbs xpt_merge_ccb(ccb, inccb); 218676babe50SJustin T. Gibbs 2187a1a604caSAlexander Motin if (ccb->ccb_h.flags & CAM_CDB_POINTER) { 2188a1a604caSAlexander Motin cmd = __builtin_alloca(ccb->csio.cdb_len); 2189a1a604caSAlexander Motin error = copyin(ccb->csio.cdb_io.cdb_ptr, cmd, ccb->csio.cdb_len); 2190a1a604caSAlexander Motin if (error) 2191a1a604caSAlexander Motin return (error); 2192a1a604caSAlexander Motin ccb->csio.cdb_io.cdb_ptr = cmd; 2193a1a604caSAlexander Motin } 2194a1a604caSAlexander Motin 219576babe50SJustin T. Gibbs /* 219695fbded6SScott Long * Let cam_periph_mapmem do a sanity check on the data pointer format. 219795fbded6SScott Long * Even if no data transfer is needed, it's a cheap check and it 219895fbded6SScott Long * simplifies the code. 219976babe50SJustin T. Gibbs */ 220095fbded6SScott Long fc = ccb->ccb_h.func_code; 220195fbded6SScott Long if ((fc == XPT_SCSI_IO) || (fc == XPT_ATA_IO) || (fc == XPT_SMP_IO) 2202a3cf03a5SWarner Losh || (fc == XPT_DEV_MATCH) || (fc == XPT_DEV_ADVINFO) || (fc == XPT_MMC_IO) 2203a3cf03a5SWarner Losh || (fc == XPT_NVME_ADMIN) || (fc == XPT_NVME_IO)) { 220476babe50SJustin T. Gibbs bzero(&mapinfo, sizeof(mapinfo)); 220576babe50SJustin T. Gibbs 22062b83592fSScott Long /* 22072b83592fSScott Long * cam_periph_mapmem calls into proc and vm functions that can 22082b83592fSScott Long * sleep as well as trigger I/O, so we can't hold the lock. 22092b83592fSScott Long * Dropping it here is reasonably safe. 22102b83592fSScott Long */ 22112b83592fSScott Long cam_periph_unlock(periph); 2212de239312SAlexander Motin error = cam_periph_mapmem(ccb, &mapinfo, softc->maxio); 22132b83592fSScott Long cam_periph_lock(periph); 221476babe50SJustin T. Gibbs 221576babe50SJustin T. Gibbs /* 221676babe50SJustin T. Gibbs * cam_periph_mapmem returned an error, we can't continue. 221776babe50SJustin T. Gibbs * Return the error to the user. 221876babe50SJustin T. Gibbs */ 221976babe50SJustin T. Gibbs if (error) 222076babe50SJustin T. Gibbs return(error); 222195fbded6SScott Long } else 222295fbded6SScott Long /* Ensure that the unmap call later on is a no-op. */ 222395fbded6SScott Long mapinfo.num_bufs_used = 0; 222476babe50SJustin T. Gibbs 222576babe50SJustin T. Gibbs /* 222676babe50SJustin T. Gibbs * If the user wants us to perform any error recovery, then honor 222776babe50SJustin T. Gibbs * that request. Otherwise, it's up to the user to perform any 222876babe50SJustin T. Gibbs * error recovery. 222976babe50SJustin T. Gibbs */ 2230e474a8e2SWarner Losh { 2231e474a8e2SWarner Losh uint32_t cam_flags, sense_flags; 2232e474a8e2SWarner Losh 2233e474a8e2SWarner Losh passflags(ccb, &cam_flags, &sense_flags); 2234e474a8e2SWarner Losh cam_periph_runccb(ccb, passerror, cam_flags, 2235e474a8e2SWarner Losh sense_flags, softc->device_stats); 2236e474a8e2SWarner Losh } 223776babe50SJustin T. Gibbs 22388cb46437SAlexander Motin cam_periph_unlock(periph); 2239*d068ea16SMark Johnston error = cam_periph_unmapmem(ccb, &mapinfo); 22408cb46437SAlexander Motin cam_periph_lock(periph); 224176babe50SJustin T. Gibbs 224276babe50SJustin T. Gibbs ccb->ccb_h.cbfcnp = NULL; 224376babe50SJustin T. Gibbs ccb->ccb_h.periph_priv = inccb->ccb_h.periph_priv; 224476babe50SJustin T. Gibbs bcopy(ccb, inccb, sizeof(union ccb)); 224576babe50SJustin T. Gibbs 2246*d068ea16SMark Johnston return (error); 224776babe50SJustin T. Gibbs } 224876babe50SJustin T. Gibbs 2249e474a8e2SWarner Losh /* 2250e474a8e2SWarner Losh * Set the cam_flags and sense_flags based on whether or not the request wants 2251e474a8e2SWarner Losh * error recovery. In order to log errors via devctl, we need to do at least 2252e474a8e2SWarner Losh * minimal recovery. We do this by not retrying unit attention (we let the 2253e474a8e2SWarner Losh * requester do it, or not, if appropriate) and specifically asking for no 2254e474a8e2SWarner Losh * recovery, like we do during device probing. 2255e474a8e2SWarner Losh */ 2256e474a8e2SWarner Losh static void 2257e474a8e2SWarner Losh passflags(union ccb *ccb, uint32_t *cam_flags, uint32_t *sense_flags) 2258e474a8e2SWarner Losh { 2259e474a8e2SWarner Losh if ((ccb->ccb_h.flags & CAM_PASS_ERR_RECOVER) != 0) { 2260e474a8e2SWarner Losh *cam_flags = CAM_RETRY_SELTO; 2261e474a8e2SWarner Losh *sense_flags = SF_RETRY_UA | SF_NO_PRINT; 2262e474a8e2SWarner Losh } else { 2263e474a8e2SWarner Losh *cam_flags = 0; 2264e474a8e2SWarner Losh *sense_flags = SF_NO_RETRY | SF_NO_RECOVERY | SF_NO_PRINT; 2265e474a8e2SWarner Losh } 2266e474a8e2SWarner Losh } 2267e474a8e2SWarner Losh 226876babe50SJustin T. Gibbs static int 22697c5d20a6SWarner Losh passerror(union ccb *ccb, uint32_t cam_flags, uint32_t sense_flags) 227076babe50SJustin T. Gibbs { 227176babe50SJustin T. Gibbs 2272553484aeSWarner Losh return(cam_periph_error(ccb, cam_flags, sense_flags)); 227376babe50SJustin T. Gibbs } 2274