/* * Copyright (c) 2002 Adaptec, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/dev/aac/aac_cam.c,v 1.2.2.4 2003/04/08 13:22:08 scottl Exp $ */ /* * CAM front-end for communicating with non-DASD devices */ #include "opt_aac.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct aac_cam { device_t dev; struct aac_cam_inf *inf; struct cam_sim *sim; struct cam_path *path; }; static int aac_cam_probe(device_t dev); static int aac_cam_attach(device_t dev); static int aac_cam_detach(device_t dev); static void aac_cam_action(struct cam_sim *, union ccb *); static void aac_cam_poll(struct cam_sim *); static void aac_cam_complete(struct aac_command *); static u_int32_t aac_cam_reset_bus(struct cam_sim *, union ccb *); static u_int32_t aac_cam_abort_ccb(struct cam_sim *, union ccb *); static u_int32_t aac_cam_term_io(struct cam_sim *, union ccb *); static int aac_cam_get_tran_settings(struct aac_softc *, struct ccb_trans_settings *, u_int32_t); static devclass_t aac_pass_devclass; static device_method_t aac_pass_methods[] = { DEVMETHOD(device_probe, aac_cam_probe), DEVMETHOD(device_attach, aac_cam_attach), DEVMETHOD(device_detach, aac_cam_detach), { 0, 0 } }; static driver_t aac_pass_driver = { "aacp", aac_pass_methods, sizeof(struct aac_cam) }; DRIVER_MODULE(aacp, aac, aac_pass_driver, aac_pass_devclass, 0, 0); MODULE_DEPEND(aacp, cam, 1, 1, 1); MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info"); static int aac_cam_probe(device_t dev) { debug_called(2); return (0); } static int aac_cam_detach(device_t dev) { return (0); } /* * Register the driver as a CAM SIM */ static int aac_cam_attach(device_t dev) { struct cam_devq *devq; struct cam_sim *sim; struct cam_path *path; struct aac_cam *camsc; struct aac_cam_inf *inf; debug_called(1); camsc = (struct aac_cam *)device_get_softc(dev); inf = (struct aac_cam_inf *)device_get_ivars(dev); camsc->inf = inf; devq = cam_simq_alloc(inf->TargetsPerBus); if (devq == NULL) return (EIO); sim = cam_sim_alloc(aac_cam_action, aac_cam_poll, "aacp", camsc, device_get_unit(dev), 1, 1, devq); if (sim == NULL) { cam_simq_free(devq); return (EIO); } /* Since every bus has it's own sim, every bus 'appears' as bus 0 */ if (xpt_bus_register(sim, 0) != CAM_SUCCESS) { cam_sim_free(sim, TRUE); return (EIO); } if (xpt_create_path(&path, NULL, cam_sim_path(sim), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { xpt_bus_deregister(cam_sim_path(sim)); cam_sim_free(sim, TRUE); return (EIO); } camsc->sim = sim; camsc->path = path; return (0); } static void aac_cam_action(struct cam_sim *sim, union ccb *ccb) { struct aac_cam *camsc; struct aac_softc *sc; struct aac_srb32 *srb; struct aac_fib *fib; struct aac_command *cm; debug_called(2); camsc = (struct aac_cam *)cam_sim_softc(sim); sc = camsc->inf->aac_sc; /* Synchronous ops, and ops that don't require communication with the * controller */ switch(ccb->ccb_h.func_code) { case XPT_SCSI_IO: case XPT_RESET_DEV: /* These are handled down below */ break; case XPT_CALC_GEOMETRY: { struct ccb_calc_geometry *ccg; u_int32_t size_mb; u_int32_t secs_per_cylinder; ccg = &ccb->ccg; size_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size); if (size_mb >= (2 * 1024)) { /* 2GB */ ccg->heads = 255; ccg->secs_per_track = 63; } else if (size_mb >= (1 * 1024)) { /* 1GB */ ccg->heads = 128; ccg->secs_per_track = 32; } else { ccg->heads = 64; ccg->secs_per_track = 32; } secs_per_cylinder = ccg->heads * ccg->secs_per_track; ccg->cylinders = ccg->volume_size / secs_per_cylinder; ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); return; } case XPT_PATH_INQ: { struct ccb_pathinq *cpi = &ccb->cpi; cpi->version_num = 1; cpi->hba_inquiry = PI_WIDE_16; cpi->target_sprt = 0; cpi->hba_misc = PIM_NOBUSRESET; cpi->hba_eng_cnt = 0; cpi->max_target = camsc->inf->TargetsPerBus; cpi->max_lun = 8; /* Per the controller spec */ cpi->initiator_id = camsc->inf->InitiatorBusId; cpi->bus_id = camsc->inf->BusNumber; cpi->base_transfer_speed = 3300; strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN); strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); cpi->unit_number = cam_sim_unit(sim); ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); return; } case XPT_GET_TRAN_SETTINGS: { u_int32_t handle; handle = AAC_BTL_TO_HANDLE(camsc->inf->BusNumber, ccb->ccb_h.target_id, ccb->ccb_h.target_lun); ccb->ccb_h.status = aac_cam_get_tran_settings(sc, &ccb->cts, handle); xpt_done(ccb); return; } case XPT_SET_TRAN_SETTINGS: ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; xpt_done(ccb); return; case XPT_RESET_BUS: if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) { ccb->ccb_h.status = aac_cam_reset_bus(sim, ccb); } else { ccb->ccb_h.status = CAM_REQ_CMP; } xpt_done(ccb); return; case XPT_ABORT: ccb->ccb_h.status = aac_cam_abort_ccb(sim, ccb); xpt_done(ccb); return; case XPT_TERM_IO: ccb->ccb_h.status = aac_cam_term_io(sim, ccb); xpt_done(ccb); return; default: device_printf(sc->aac_dev, "Unsupported command 0x%x\n", ccb->ccb_h.func_code); ccb->ccb_h.status = CAM_PROVIDE_FAIL; xpt_done(ccb); return; } /* Async ops that require communcation with the controller */ if (aac_alloc_command(sc, &cm)) { xpt_freeze_simq(sim, 1); ccb->ccb_h.status = CAM_REQUEUE_REQ; xpt_done(ccb); return; } fib = cm->cm_fib; srb = (struct aac_srb32 *)&fib->data[0]; cm->cm_datalen = 0; switch (ccb->ccb_h.flags & CAM_DIR_MASK) { case CAM_DIR_IN: srb->flags = AAC_SRB_FLAGS_DATA_IN; cm->cm_flags |= AAC_CMD_DATAIN; break; case CAM_DIR_OUT: srb->flags = AAC_SRB_FLAGS_DATA_OUT; cm->cm_flags |= AAC_CMD_DATAOUT; break; case CAM_DIR_NONE: srb->flags = AAC_SRB_FLAGS_NO_DATA_XFER; break; default: srb->flags = AAC_SRB_FLAGS_UNSPECIFIED_DIRECTION; cm->cm_flags |= AAC_CMD_DATAIN | AAC_CMD_DATAOUT; break; } switch(ccb->ccb_h.func_code) { case XPT_SCSI_IO: { struct ccb_scsiio *csio = &ccb->csio; srb->function = AAC_SRB_FUNC_EXECUTE_SCSI; /* * Copy the CDB into the SRB. It's only 6-16 bytes, * so a copy is not too expensive. */ srb->cdb_len = csio->cdb_len; if (ccb->ccb_h.flags & CAM_CDB_POINTER) bcopy(csio->cdb_io.cdb_ptr, (u_int8_t *)&srb->cdb[0], srb->cdb_len); else bcopy(csio->cdb_io.cdb_bytes, (u_int8_t *)&srb->cdb[0], srb->cdb_len); /* Map the s/g list. XXX 32bit addresses only! */ if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) { srb->data_len = csio->dxfer_len; if (ccb->ccb_h.flags & CAM_DATA_PHYS) { srb->sg_map32.SgCount = 1; srb->sg_map32.SgEntry[0].SgAddress = (u_int32_t)csio->data_ptr; srb->sg_map32.SgEntry[0].SgByteCount = csio->dxfer_len; } else { /* * Arrange things so that the S/G * map will get set up automagically */ cm->cm_data = (void *)csio->data_ptr; cm->cm_datalen = csio->dxfer_len; cm->cm_sgtable = &srb->sg_map32; } } else { /* XXX Need to handle multiple s/g elements */ panic("aac_cam: multiple s/g elements"); } } else { srb->sg_map32.SgCount = 0; srb->sg_map32.SgEntry[0].SgByteCount = 0; srb->data_len = 0; } break; } case XPT_RESET_DEV: if (!(sc->flags & AAC_FLAGS_CAM_NORESET)) { srb->function = AAC_SRB_FUNC_RESET_DEVICE; break; } else { ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); return; } default: break; } srb->bus = camsc->inf->BusNumber; /* Bus number relative to the card */ srb->target = ccb->ccb_h.target_id; srb->lun = ccb->ccb_h.target_lun; srb->timeout = ccb->ccb_h.timeout; /* XXX */ srb->retry_limit = 0; cm->cm_complete = aac_cam_complete; cm->cm_private = ccb; cm->cm_timestamp = time_second; cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE; fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | AAC_FIBSTATE_INITIALISED | AAC_FIBSTATE_FROMHOST | AAC_FIBSTATE_REXPECTED | AAC_FIBSTATE_NORM; fib->Header.Command = ScsiPortCommand; fib->Header.Size = sizeof(struct aac_fib_header) + sizeof(struct aac_srb32); aac_enqueue_ready(cm); aac_startio(cm->cm_sc); return; } static void aac_cam_poll(struct cam_sim *sim) { /* * Pinging the interrupt routine isn't very safe, nor is it * really necessary. Do nothing. */ } static void aac_cam_complete(struct aac_command *cm) { union ccb *ccb; struct aac_srb_response *srbr; struct aac_softc *sc; debug_called(2); sc = cm->cm_sc; ccb = cm->cm_private; srbr = (struct aac_srb_response *)&cm->cm_fib->data[0]; if (srbr->fib_status != 0) { device_printf(sc->aac_dev, "Passthru FIB failed!\n"); ccb->ccb_h.status = CAM_REQ_ABORTED; } else { /* * The SRB error codes just happen to match the CAM error * codes. How convienient! */ ccb->ccb_h.status = srbr->srb_status; /* Take care of SCSI_IO ops. */ if (ccb->ccb_h.func_code == XPT_SCSI_IO) { u_int8_t command, device; ccb->csio.scsi_status = srbr->scsi_status; /* Take care of autosense */ if (srbr->sense_len) { int sense_len, scsi_sense_len; scsi_sense_len = sizeof(struct scsi_sense_data); bzero(&ccb->csio.sense_data, scsi_sense_len); sense_len = (srbr->sense_len > scsi_sense_len) ? scsi_sense_len : srbr->sense_len; bcopy(&srbr->sense[0], &ccb->csio.sense_data, srbr->sense_len); ccb->csio.sense_len = sense_len; ccb->ccb_h.status |= CAM_AUTOSNS_VALID; scsi_sense_print(&ccb->csio); } /* If this is an inquiry command, fake things out */ if (ccb->ccb_h.flags & CAM_CDB_POINTER) command = ccb->csio.cdb_io.cdb_ptr[0]; else command = ccb->csio.cdb_io.cdb_bytes[0]; if ((command == INQUIRY) && (ccb->ccb_h.status == CAM_REQ_CMP)) { device = ccb->csio.data_ptr[0] & 0x1f; /* * We want DASD and PROC devices to only be * visible through the pass device. */ if ((device == T_DIRECT) || (device == T_PROCESSOR) || (sc->flags & AAC_FLAGS_CAM_PASSONLY)) ccb->csio.data_ptr[0] = ((device & 0xe0) | T_NODEVICE); } } } aac_release_command(cm); xpt_done(ccb); return; } static u_int32_t aac_cam_reset_bus(struct cam_sim *sim, union ccb *ccb) { struct aac_fib *fib; struct aac_softc *sc; struct aac_cam *camsc; struct aac_vmioctl *vmi; struct aac_resetbus *rbc; int e; camsc = (struct aac_cam *)cam_sim_softc(sim); sc = camsc->inf->aac_sc; if (sc == NULL) { printf("Null sc?\n"); return (CAM_REQ_ABORTED); } aac_alloc_sync_fib(sc, &fib, 0); vmi = (struct aac_vmioctl *)&fib->data[0]; bzero(vmi, sizeof(struct aac_vmioctl)); vmi->Command = VM_Ioctl; vmi->ObjType = FT_DRIVE; vmi->MethId = sc->scsi_method_id; vmi->ObjId = 0; vmi->IoctlCmd = ResetBus; rbc = (struct aac_resetbus *)&vmi->IoctlBuf[0]; rbc->BusNumber = camsc->inf->BusNumber; e = aac_sync_fib(sc, ContainerCommand, 0, fib, sizeof(struct aac_vmioctl)); if (e) { device_printf(sc->aac_dev, "Error 0x%x sending passthrough\n", e); aac_release_sync_fib(sc); return (CAM_REQ_ABORTED); } aac_release_sync_fib(sc); return (CAM_REQ_CMP); } static u_int32_t aac_cam_abort_ccb(struct cam_sim *sim, union ccb *ccb) { return (CAM_UA_ABORT); } static u_int32_t aac_cam_term_io(struct cam_sim *sim, union ccb *ccb) { return (CAM_UA_TERMIO); } static int aac_cam_get_tran_settings(struct aac_softc *sc, struct ccb_trans_settings *cts, u_int32_t handle) { struct aac_fib *fib; struct aac_vmioctl *vmi; struct aac_vmi_devinfo_resp *vmi_resp; int error; aac_alloc_sync_fib(sc, &fib, 0); vmi = (struct aac_vmioctl *)&fib->data[0]; bzero(vmi, sizeof(struct aac_vmioctl)); vmi->Command = VM_Ioctl; vmi->ObjType = FT_DRIVE; vmi->MethId = sc->scsi_method_id; vmi->ObjId = handle; vmi->IoctlCmd = GetDeviceProbeInfo; error = aac_sync_fib(sc, ContainerCommand, 0, fib, sizeof(struct aac_vmioctl)); if (error) { device_printf(sc->aac_dev, "Error %d sending VMIoctl command\n", error); aac_release_sync_fib(sc); return (CAM_REQ_INVALID); } vmi_resp = (struct aac_vmi_devinfo_resp *)&fib->data[0]; if (vmi_resp->Status != ST_OK) { debug(1, "VM_Ioctl returned %d\n", vmi_resp->Status); aac_release_sync_fib(sc); return (CAM_REQ_CMP_ERR); } cts->bus_width = ((vmi_resp->Inquiry7 & 0x60) >> 5); if (vmi_resp->ScsiRate) { cts->sync_period = scsi_calc_syncparam((10000 / vmi_resp->ScsiRate)); cts->sync_offset = vmi_resp->ScsiOffset; } else { cts->sync_period = 0; cts->sync_offset = 0; } cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB); cts->valid = CCB_TRANS_DISC_VALID | CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_SYNC_OFFSET_VALID | CCB_TRANS_BUS_WIDTH_VALID | CCB_TRANS_TQ_VALID; aac_release_sync_fib(sc); return (CAM_REQ_CMP); }