vpo.c revision 196352
128219Smsmith/*- 255939Snsouch * Copyright (c) 1997, 1998, 1999 Nicolas Souchu 328219Smsmith * All rights reserved. 428219Smsmith * 528219Smsmith * Redistribution and use in source and binary forms, with or without 628219Smsmith * modification, are permitted provided that the following conditions 728219Smsmith * are met: 828219Smsmith * 1. Redistributions of source code must retain the above copyright 928219Smsmith * notice, this list of conditions and the following disclaimer. 1028219Smsmith * 2. Redistributions in binary form must reproduce the above copyright 1128219Smsmith * notice, this list of conditions and the following disclaimer in the 1228219Smsmith * documentation and/or other materials provided with the distribution. 1328219Smsmith * 1428219Smsmith * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1528219Smsmith * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1628219Smsmith * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1728219Smsmith * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1828219Smsmith * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1928219Smsmith * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2028219Smsmith * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2128219Smsmith * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2228219Smsmith * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2328219Smsmith * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2428219Smsmith * SUCH DAMAGE. 2528219Smsmith * 2628219Smsmith */ 2728219Smsmith 28119418Sobrien#include <sys/cdefs.h> 29119418Sobrien__FBSDID("$FreeBSD: head/sys/dev/ppbus/vpo.c 196352 2009-08-18 08:46:54Z mav $"); 30119418Sobrien 3128219Smsmith#include <sys/param.h> 3228219Smsmith#include <sys/systm.h> 3355939Snsouch#include <sys/module.h> 3455939Snsouch#include <sys/bus.h> 35168752Sscottl#include <sys/lock.h> 36168752Sscottl#include <sys/mutex.h> 3759018Sn_hibma#include <sys/malloc.h> 3828219Smsmith 3939520Snsouch#include <cam/cam.h> 4039520Snsouch#include <cam/cam_ccb.h> 4139520Snsouch#include <cam/cam_sim.h> 4239520Snsouch#include <cam/cam_xpt_sim.h> 4339520Snsouch#include <cam/cam_debug.h> 4459018Sn_hibma#include <cam/cam_periph.h> 4539520Snsouch 4639520Snsouch#include <cam/scsi/scsi_all.h> 4739520Snsouch#include <cam/scsi/scsi_message.h> 4839520Snsouch#include <cam/scsi/scsi_da.h> 4939520Snsouch 5028219Smsmith#include <sys/kernel.h> 5128219Smsmith 5242475Snsouch#include "opt_vpo.h" 5342475Snsouch 5428219Smsmith#include <dev/ppbus/ppbconf.h> 5538061Smsmith#include <dev/ppbus/vpoio.h> 5628219Smsmith 5755939Snsouch#include "ppbus_if.h" 5855939Snsouch 5938061Smsmithstruct vpo_sense { 6038061Smsmith struct scsi_sense cmd; 6138061Smsmith unsigned int stat; 6238061Smsmith unsigned int count; 6338061Smsmith}; 6428219Smsmith 6538061Smsmithstruct vpo_data { 66184130Sjhb device_t vpo_dev; 6738061Smsmith int vpo_stat; 6838061Smsmith int vpo_count; 6938061Smsmith int vpo_error; 7028219Smsmith 7139134Snsouch int vpo_isplus; 7239134Snsouch 7339520Snsouch struct cam_sim *sim; 7439520Snsouch 7538061Smsmith struct vpo_sense vpo_sense; 7638061Smsmith 7738061Smsmith struct vpoio_data vpo_io; /* interface to low level functions */ 7838061Smsmith}; 7938061Smsmith 8055939Snsouch#define DEVTOSOFTC(dev) \ 8155939Snsouch ((struct vpo_data *)device_get_softc(dev)) 8228219Smsmith 8355939Snsouch/* cam related functions */ 8455939Snsouchstatic void vpo_action(struct cam_sim *sim, union ccb *ccb); 8555939Snsouchstatic void vpo_poll(struct cam_sim *sim); 8659018Sn_hibmastatic void vpo_cam_rescan_callback(struct cam_periph *periph, 8759018Sn_hibma union ccb *ccb); 8859018Sn_hibmastatic void vpo_cam_rescan(struct vpo_data *vpo); 8955939Snsouch 9056455Speterstatic void 9156455Spetervpo_identify(driver_t *driver, device_t parent) 9256455Speter{ 9356455Speter 94127189Sguido device_t dev; 95127189Sguido 96184130Sjhb dev = device_find_child(parent, "vpo", -1); 97127189Sguido if (!dev) 98127189Sguido BUS_ADD_CHILD(parent, 0, "vpo", -1); 9956455Speter} 10056455Speter 10128219Smsmith/* 10255939Snsouch * vpo_probe() 10328219Smsmith */ 10455939Snsouchstatic int 10555939Snsouchvpo_probe(device_t dev) 10628219Smsmith{ 107187576Sjhb device_t ppbus = device_get_parent(dev); 10828219Smsmith struct vpo_data *vpo; 10955939Snsouch int error; 11028219Smsmith 11155939Snsouch vpo = DEVTOSOFTC(dev); 112184130Sjhb vpo->vpo_dev = dev; 11328219Smsmith 11439520Snsouch /* check ZIP before ZIP+ or imm_probe() will send controls to 11539520Snsouch * the printer or whatelse connected to the port */ 116187576Sjhb ppb_lock(ppbus); 11755939Snsouch if ((error = vpoio_probe(dev, &vpo->vpo_io)) == 0) { 11839520Snsouch vpo->vpo_isplus = 0; 11955939Snsouch device_set_desc(dev, 12055939Snsouch "Iomega VPI0 Parallel to SCSI interface"); 12155939Snsouch } else if ((error = imm_probe(dev, &vpo->vpo_io)) == 0) { 12239134Snsouch vpo->vpo_isplus = 1; 12355939Snsouch device_set_desc(dev, 12455939Snsouch "Iomega Matchmaker Parallel to SCSI interface"); 12539520Snsouch } else { 126187576Sjhb ppb_unlock(ppbus); 12755939Snsouch return (error); 12828219Smsmith } 129187576Sjhb ppb_unlock(ppbus); 13028219Smsmith 13155939Snsouch return (0); 13228219Smsmith} 13328219Smsmith 13428219Smsmith/* 13555939Snsouch * vpo_attach() 13628219Smsmith */ 13728219Smsmithstatic int 13855939Snsouchvpo_attach(device_t dev) 13928219Smsmith{ 14055939Snsouch struct vpo_data *vpo = DEVTOSOFTC(dev); 141187576Sjhb device_t ppbus = device_get_parent(dev); 142187576Sjhb struct ppb_data *ppb = device_get_softc(ppbus); /* XXX: layering */ 14339520Snsouch struct cam_devq *devq; 14455939Snsouch int error; 14528219Smsmith 14638061Smsmith /* low level attachment */ 14739134Snsouch if (vpo->vpo_isplus) { 14855939Snsouch if ((error = imm_attach(&vpo->vpo_io))) 14955939Snsouch return (error); 15039134Snsouch } else { 15155939Snsouch if ((error = vpoio_attach(&vpo->vpo_io))) 15255939Snsouch return (error); 15339134Snsouch } 15438061Smsmith 15528219Smsmith /* 15639520Snsouch ** Now tell the generic SCSI layer 15739520Snsouch ** about our bus. 15839520Snsouch */ 15939520Snsouch devq = cam_simq_alloc(/*maxopenings*/1); 16039520Snsouch /* XXX What about low-level detach on error? */ 16139520Snsouch if (devq == NULL) 16255939Snsouch return (ENXIO); 16328219Smsmith 16455939Snsouch vpo->sim = cam_sim_alloc(vpo_action, vpo_poll, "vpo", vpo, 165187576Sjhb device_get_unit(dev), ppb->ppc_lock, 16639520Snsouch /*untagged*/1, /*tagged*/0, devq); 16739520Snsouch if (vpo->sim == NULL) { 16839520Snsouch cam_simq_free(devq); 16955939Snsouch return (ENXIO); 17039520Snsouch } 17138061Smsmith 172187576Sjhb ppb_lock(ppbus); 173170872Sscottl if (xpt_bus_register(vpo->sim, dev, /*bus*/0) != CAM_SUCCESS) { 17439520Snsouch cam_sim_free(vpo->sim, /*free_devq*/TRUE); 175187576Sjhb ppb_unlock(ppbus); 17655939Snsouch return (ENXIO); 17739520Snsouch } 178187576Sjhb ppb_unlock(ppbus); 17928219Smsmith 18039520Snsouch /* all went ok */ 18128219Smsmith 18259018Sn_hibma vpo_cam_rescan(vpo); /* have CAM rescan the bus */ 18359018Sn_hibma 18455939Snsouch return (0); 18528219Smsmith} 18628219Smsmith 18759018Sn_hibmastatic void 18859018Sn_hibmavpo_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 18959018Sn_hibma{ 190185003Sjhb 191185003Sjhb free(ccb, M_TEMP); 19259018Sn_hibma} 19359018Sn_hibma 19459018Sn_hibmastatic void 19559018Sn_hibmavpo_cam_rescan(struct vpo_data *vpo) 19659018Sn_hibma{ 197185003Sjhb struct cam_path *path; 198185003Sjhb union ccb *ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO); 19959018Sn_hibma 200185003Sjhb if (xpt_create_path(&path, xpt_periph, cam_sim_path(vpo->sim), 0, 0) 201185003Sjhb != CAM_REQ_CMP) { 20259018Sn_hibma /* A failure is benign as the user can do a manual rescan */ 203124673Sru free(ccb, M_TEMP); 204185003Sjhb return; 20559018Sn_hibma } 20659018Sn_hibma 207185003Sjhb xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/); 208185003Sjhb ccb->ccb_h.func_code = XPT_SCAN_BUS; 209185003Sjhb ccb->ccb_h.cbfcnp = vpo_cam_rescan_callback; 210185003Sjhb ccb->crcn.flags = CAM_FLAG_NONE; 211185003Sjhb xpt_action(ccb); 21259018Sn_hibma 213185003Sjhb /* The scan is in progress now. */ 21459018Sn_hibma} 21559018Sn_hibma 21628219Smsmith/* 21738061Smsmith * vpo_intr() 21828219Smsmith */ 21938061Smsmithstatic void 22039520Snsouchvpo_intr(struct vpo_data *vpo, struct ccb_scsiio *csio) 22128219Smsmith{ 22241591Sarchie int errno; /* error in errno.h */ 22341591Sarchie#ifdef VP0_DEBUG 22441591Sarchie int i; 22541591Sarchie#endif 22628219Smsmith 22739134Snsouch if (vpo->vpo_isplus) { 22839134Snsouch errno = imm_do_scsi(&vpo->vpo_io, VP0_INITIATOR, 22939520Snsouch csio->ccb_h.target_id, 23039520Snsouch (char *)&csio->cdb_io.cdb_bytes, csio->cdb_len, 23139520Snsouch (char *)csio->data_ptr, csio->dxfer_len, 23239520Snsouch &vpo->vpo_stat, &vpo->vpo_count, &vpo->vpo_error); 23339134Snsouch } else { 23439134Snsouch errno = vpoio_do_scsi(&vpo->vpo_io, VP0_INITIATOR, 23539520Snsouch csio->ccb_h.target_id, 23639520Snsouch (char *)&csio->cdb_io.cdb_bytes, csio->cdb_len, 23739520Snsouch (char *)csio->data_ptr, csio->dxfer_len, 23839520Snsouch &vpo->vpo_stat, &vpo->vpo_count, &vpo->vpo_error); 23939134Snsouch } 24028219Smsmith 24128257Smsmith#ifdef VP0_DEBUG 242185003Sjhb printf("vpo_do_scsi = %d, status = 0x%x, count = %d, vpo_error = %d\n", 24328257Smsmith errno, vpo->vpo_stat, vpo->vpo_count, vpo->vpo_error); 24439520Snsouch 24539520Snsouch /* dump of command */ 24639520Snsouch for (i=0; i<csio->cdb_len; i++) 24739520Snsouch printf("%x ", ((char *)&csio->cdb_io.cdb_bytes)[i]); 24839520Snsouch 24939520Snsouch printf("\n"); 25028257Smsmith#endif 25128257Smsmith 25228257Smsmith if (errno) { 25328257Smsmith /* connection to ppbus interrupted */ 25439520Snsouch csio->ccb_h.status = CAM_CMD_TIMEOUT; 255187576Sjhb return; 25628257Smsmith } 25728219Smsmith 25828257Smsmith /* if a timeout occured, no sense */ 25928257Smsmith if (vpo->vpo_error) { 26039520Snsouch if (vpo->vpo_error != VP0_ESELECT_TIMEOUT) 261184130Sjhb device_printf(vpo->vpo_dev, "VP0 error/timeout (%d)\n", 262184130Sjhb vpo->vpo_error); 26339520Snsouch 26439520Snsouch csio->ccb_h.status = CAM_CMD_TIMEOUT; 265187576Sjhb return; 26628257Smsmith } 26728219Smsmith 26839520Snsouch /* check scsi status */ 26939520Snsouch if (vpo->vpo_stat != SCSI_STATUS_OK) { 27039520Snsouch csio->scsi_status = vpo->vpo_stat; 27128219Smsmith 27239520Snsouch /* check if we have to sense the drive */ 27339520Snsouch if ((vpo->vpo_stat & SCSI_STATUS_CHECK_COND) != 0) { 27428219Smsmith 27539520Snsouch vpo->vpo_sense.cmd.opcode = REQUEST_SENSE; 27639520Snsouch vpo->vpo_sense.cmd.length = csio->sense_len; 27728219Smsmith vpo->vpo_sense.cmd.control = 0; 27828219Smsmith 27939134Snsouch if (vpo->vpo_isplus) { 28039134Snsouch errno = imm_do_scsi(&vpo->vpo_io, VP0_INITIATOR, 28139520Snsouch csio->ccb_h.target_id, 28239134Snsouch (char *)&vpo->vpo_sense.cmd, 28339134Snsouch sizeof(vpo->vpo_sense.cmd), 28439520Snsouch (char *)&csio->sense_data, csio->sense_len, 28539134Snsouch &vpo->vpo_sense.stat, &vpo->vpo_sense.count, 28639134Snsouch &vpo->vpo_error); 28739134Snsouch } else { 28839134Snsouch errno = vpoio_do_scsi(&vpo->vpo_io, VP0_INITIATOR, 28939520Snsouch csio->ccb_h.target_id, 29039134Snsouch (char *)&vpo->vpo_sense.cmd, 29139134Snsouch sizeof(vpo->vpo_sense.cmd), 29239520Snsouch (char *)&csio->sense_data, csio->sense_len, 29339134Snsouch &vpo->vpo_sense.stat, &vpo->vpo_sense.count, 29439134Snsouch &vpo->vpo_error); 29539134Snsouch } 29628219Smsmith 297185003Sjhb 29839520Snsouch#ifdef VP0_DEBUG 299185003Sjhb printf("(sense) vpo_do_scsi = %d, status = 0x%x, count = %d, vpo_error = %d\n", 30039520Snsouch errno, vpo->vpo_sense.stat, vpo->vpo_sense.count, vpo->vpo_error); 30139520Snsouch#endif 30228257Smsmith 30339520Snsouch /* check sense return status */ 30439520Snsouch if (errno == 0 && vpo->vpo_sense.stat == SCSI_STATUS_OK) { 30539520Snsouch /* sense ok */ 30639520Snsouch csio->ccb_h.status = CAM_AUTOSNS_VALID | CAM_SCSI_STATUS_ERROR; 30739520Snsouch csio->sense_resid = csio->sense_len - vpo->vpo_sense.count; 30828219Smsmith 30939520Snsouch#ifdef VP0_DEBUG 31039520Snsouch /* dump of sense info */ 31139520Snsouch printf("(sense) "); 31239520Snsouch for (i=0; i<vpo->vpo_sense.count; i++) 31339520Snsouch printf("%x ", ((char *)&csio->sense_data)[i]); 31439520Snsouch printf("\n"); 31539520Snsouch#endif 31639520Snsouch 31739520Snsouch } else { 31839520Snsouch /* sense failed */ 31939520Snsouch csio->ccb_h.status = CAM_AUTOSENSE_FAIL; 32039520Snsouch } 32139520Snsouch } else { 32239520Snsouch /* no sense */ 323185003Sjhb csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 32439520Snsouch } 32539520Snsouch 326187576Sjhb return; 32728219Smsmith } 32828219Smsmith 32939520Snsouch csio->resid = csio->dxfer_len - vpo->vpo_count; 33039520Snsouch csio->ccb_h.status = CAM_REQ_CMP; 33128219Smsmith} 33228219Smsmith 33339520Snsouchstatic void 33439520Snsouchvpo_action(struct cam_sim *sim, union ccb *ccb) 33528219Smsmith{ 33639520Snsouch struct vpo_data *vpo = (struct vpo_data *)sim->softc; 337187576Sjhb#ifdef INVARIANTS 338187576Sjhb device_t ppbus = device_get_parent(vpo->vpo_dev); 33928219Smsmith 340187576Sjhb ppb_assert_locked(ppbus); 341187576Sjhb#endif 34239520Snsouch switch (ccb->ccb_h.func_code) { 34339520Snsouch case XPT_SCSI_IO: 34439520Snsouch { 34539520Snsouch struct ccb_scsiio *csio; 34639520Snsouch 34739520Snsouch csio = &ccb->csio; 34839520Snsouch 34939520Snsouch#ifdef VP0_DEBUG 350184130Sjhb device_printf(vpo->vpo_dev, "XPT_SCSI_IO (0x%x) request\n", 351184130Sjhb csio->cdb_io.cdb_bytes[0]); 35239520Snsouch#endif 353185003Sjhb 35439520Snsouch vpo_intr(vpo, csio); 35539520Snsouch 35639520Snsouch xpt_done(ccb); 35739520Snsouch 35839520Snsouch break; 35928219Smsmith } 36039520Snsouch case XPT_CALC_GEOMETRY: 36139520Snsouch { 36239520Snsouch struct ccb_calc_geometry *ccg; 36328219Smsmith 36439520Snsouch ccg = &ccb->ccg; 36539520Snsouch 36639520Snsouch#ifdef VP0_DEBUG 367184130Sjhb device_printf(vpo->vpo_dev, "XPT_CALC_GEOMETRY (bs=%d,vs=%jd,c=%d,h=%d,spt=%d) request\n", 36851952Sn_hibma ccg->block_size, 369114451Sjhb (intmax_t)ccg->volume_size, 37051952Sn_hibma ccg->cylinders, 37151952Sn_hibma ccg->heads, 37251952Sn_hibma ccg->secs_per_track); 37339520Snsouch#endif 37451952Sn_hibma 37539520Snsouch ccg->heads = 64; 37639520Snsouch ccg->secs_per_track = 32; 37751952Sn_hibma ccg->cylinders = ccg->volume_size / 37851952Sn_hibma (ccg->heads * ccg->secs_per_track); 37939520Snsouch 38039520Snsouch ccb->ccb_h.status = CAM_REQ_CMP; 38139520Snsouch xpt_done(ccb); 38239520Snsouch break; 38328219Smsmith } 38439520Snsouch case XPT_RESET_BUS: /* Reset the specified SCSI bus */ 38539520Snsouch { 38628219Smsmith 38728257Smsmith#ifdef VP0_DEBUG 388184130Sjhb device_printf(vpo->vpo_dev, "XPT_RESET_BUS request\n"); 38928219Smsmith#endif 39028219Smsmith 39139520Snsouch if (vpo->vpo_isplus) { 39239520Snsouch if (imm_reset_bus(&vpo->vpo_io)) { 39339520Snsouch ccb->ccb_h.status = CAM_REQ_CMP_ERR; 39439520Snsouch xpt_done(ccb); 39539520Snsouch return; 39639520Snsouch } 39739520Snsouch } else { 39839520Snsouch if (vpoio_reset_bus(&vpo->vpo_io)) { 39939520Snsouch ccb->ccb_h.status = CAM_REQ_CMP_ERR; 40039520Snsouch xpt_done(ccb); 40139520Snsouch return; 40239520Snsouch } 40339520Snsouch } 40439520Snsouch 40539520Snsouch ccb->ccb_h.status = CAM_REQ_CMP; 40639520Snsouch xpt_done(ccb); 40739520Snsouch break; 40828219Smsmith } 40939520Snsouch case XPT_PATH_INQ: /* Path routing inquiry */ 41039520Snsouch { 41139520Snsouch struct ccb_pathinq *cpi = &ccb->cpi; 412185003Sjhb 41339520Snsouch#ifdef VP0_DEBUG 414184130Sjhb device_printf(vpo->vpo_dev, "XPT_PATH_INQ request\n"); 41539520Snsouch#endif 41639520Snsouch cpi->version_num = 1; /* XXX??? */ 41742441Snsouch cpi->hba_inquiry = 0; 41842441Snsouch cpi->target_sprt = 0; 41942441Snsouch cpi->hba_misc = 0; 42042441Snsouch cpi->hba_eng_cnt = 0; 42139520Snsouch cpi->max_target = 7; 42239520Snsouch cpi->max_lun = 0; 42339520Snsouch cpi->initiator_id = VP0_INITIATOR; 42439520Snsouch cpi->bus_id = sim->bus_id; 42546586Sken cpi->base_transfer_speed = 93; 42639520Snsouch strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 42739520Snsouch strncpy(cpi->hba_vid, "Iomega", HBA_IDLEN); 42839520Snsouch strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN); 42939520Snsouch cpi->unit_number = sim->unit_number; 430196352Smav cpi->transport = XPORT_PPB; 431196352Smav cpi->transport_version = 0; 43228219Smsmith 43339520Snsouch cpi->ccb_h.status = CAM_REQ_CMP; 43439520Snsouch xpt_done(ccb); 43539520Snsouch break; 43639520Snsouch } 43739520Snsouch default: 43839520Snsouch ccb->ccb_h.status = CAM_REQ_INVALID; 43939520Snsouch xpt_done(ccb); 44039520Snsouch break; 44139520Snsouch } 44228219Smsmith 44339520Snsouch return; 44439520Snsouch} 44528219Smsmith 44639520Snsouchstatic void 44739520Snsouchvpo_poll(struct cam_sim *sim) 448185003Sjhb{ 449185003Sjhb 450185003Sjhb /* The ZIP is actually always polled throw vpo_action(). */ 45128219Smsmith} 45255939Snsouch 45356455Speterstatic devclass_t vpo_devclass; 45456455Speter 45556455Speterstatic device_method_t vpo_methods[] = { 45656455Speter /* device interface */ 45756455Speter DEVMETHOD(device_identify, vpo_identify), 45856455Speter DEVMETHOD(device_probe, vpo_probe), 45956455Speter DEVMETHOD(device_attach, vpo_attach), 46056455Speter 46156455Speter { 0, 0 } 46256455Speter}; 46356455Speter 46456455Speterstatic driver_t vpo_driver = { 46556455Speter "vpo", 46656455Speter vpo_methods, 46756455Speter sizeof(struct vpo_data), 46856455Speter}; 46955939SnsouchDRIVER_MODULE(vpo, ppbus, vpo_driver, vpo_devclass, 0, 0); 470165102SmjacobMODULE_DEPEND(vpo, ppbus, 1, 1, 1); 471165102SmjacobMODULE_DEPEND(vpo, cam, 1, 1, 1); 472