/*- * 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); /* * CAM front-end for communicating with non-DASD devices */ #include "opt_aac.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/sysctl.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/module.h> #include <sys/mutex.h> #include <cam/cam.h> #include <cam/cam_ccb.h> #include <cam/cam_debug.h> #include <cam/cam_periph.h> #include <cam/cam_sim.h> #include <cam/cam_xpt_sim.h> #include <cam/scsi/scsi_all.h> #include <cam/scsi/scsi_message.h> #include <sys/bus.h> #include <sys/conf.h> #include <sys/disk.h> #include <machine/md_var.h> #include <machine/bus.h> #include <sys/rman.h> #include <vm/vm.h> #include <vm/pmap.h> #include <dev/aac/aacreg.h> #include <sys/aac_ioctl.h> #include <dev/aac/aacvar.h> struct aac_cam { device_t dev; struct aac_sim *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 void aac_cam_rescan(struct aac_softc *sc, uint32_t channel, uint32_t target_id); 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 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), DEVMETHOD_END }; static driver_t aac_pass_driver = { "aacp", aac_pass_methods, sizeof(struct aac_cam) }; DRIVER_MODULE(aacp, aac, aac_pass_driver, aac_pass_devclass, NULL, NULL); MODULE_DEPEND(aacp, cam, 1, 1, 1); static MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info"); static void aac_cam_rescan(struct aac_softc *sc, uint32_t channel, uint32_t target_id) { union ccb *ccb; struct aac_sim *sim; struct aac_cam *camsc; if (target_id == AAC_CAM_TARGET_WILDCARD) target_id = CAM_TARGET_WILDCARD; TAILQ_FOREACH(sim, &sc->aac_sim_tqh, sim_link) { camsc = sim->aac_cam; if (camsc == NULL || camsc->inf == NULL || camsc->inf->BusNumber != channel) continue; ccb = xpt_alloc_ccb_nowait(); if (ccb == NULL) { device_printf(sc->aac_dev, "Cannot allocate ccb for bus rescan.\n"); return; } if (xpt_create_path(&ccb->ccb_h.path, NULL, cam_sim_path(camsc->sim), target_id, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { xpt_free_ccb(ccb); device_printf(sc->aac_dev, "Cannot create path for bus rescan.\n"); return; } xpt_rescan(ccb); break; } } static void aac_cam_event(struct aac_softc *sc, struct aac_event *event, void *arg) { union ccb *ccb; struct aac_cam *camsc; switch (event->ev_type) { case AAC_EVENT_CMFREE: ccb = arg; camsc = ccb->ccb_h.sim_priv.entries[0].ptr; free(event, M_AACCAM); xpt_release_simq(camsc->sim, 1); ccb->ccb_h.status = CAM_REQUEUE_REQ; xpt_done(ccb); break; default: device_printf(sc->aac_dev, "unknown event %d in aac_cam\n", event->ev_type); break; } } static int aac_cam_probe(device_t dev) { fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); return (0); } static int aac_cam_detach(device_t dev) { struct aac_softc *sc; struct aac_cam *camsc; fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); camsc = (struct aac_cam *)device_get_softc(dev); sc = camsc->inf->aac_sc; camsc->inf->aac_cam = NULL; mtx_lock(&sc->aac_io_lock); xpt_async(AC_LOST_DEVICE, camsc->path, NULL); xpt_free_path(camsc->path); xpt_bus_deregister(cam_sim_path(camsc->sim)); cam_sim_free(camsc->sim, /*free_devq*/TRUE); sc->cam_rescan_cb = NULL; mtx_unlock(&sc->aac_io_lock); 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_sim *inf; fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); camsc = (struct aac_cam *)device_get_softc(dev); inf = (struct aac_sim *)device_get_ivars(dev); camsc->inf = inf; camsc->inf->aac_cam = camsc; 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), &inf->aac_sc->aac_io_lock, 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 */ mtx_lock(&inf->aac_sc->aac_io_lock); if (xpt_bus_register(sim, dev, 0) != CAM_SUCCESS) { cam_sim_free(sim, TRUE); mtx_unlock(&inf->aac_sc->aac_io_lock); 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); mtx_unlock(&inf->aac_sc->aac_io_lock); return (EIO); } inf->aac_sc->cam_rescan_cb = aac_cam_rescan; mtx_unlock(&inf->aac_sc->aac_io_lock); 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_srb *srb; struct aac_fib *fib; struct aac_command *cm; camsc = (struct aac_cam *)cam_sim_softc(sim); sc = camsc->inf->aac_sc; fwprintf(sc, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); /* 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; /* * Resetting via the passthrough or parallel bus scan * causes problems. */ cpi->hba_misc = PIM_NOBUSRESET | PIM_SEQSCAN; 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); cpi->transport = XPORT_SPI; cpi->transport_version = 2; cpi->protocol = PROTO_SCSI; cpi->protocol_version = SCSI_REV_2; ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); return; } case XPT_GET_TRAN_SETTINGS: { struct ccb_trans_settings_scsi *scsi = &ccb->cts.proto_specific.scsi; struct ccb_trans_settings_spi *spi = &ccb->cts.xport_specific.spi; ccb->cts.protocol = PROTO_SCSI; ccb->cts.protocol_version = SCSI_REV_2; ccb->cts.transport = XPORT_SPI; ccb->cts.transport_version = 2; if (ccb->ccb_h.target_lun != CAM_LUN_WILDCARD) { scsi->valid = CTS_SCSI_VALID_TQ; spi->valid |= CTS_SPI_VALID_DISC; } else { scsi->valid = 0; } ccb->ccb_h.status = CAM_REQ_CMP; 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)) { struct aac_event *event; xpt_freeze_simq(sim, 1); ccb->ccb_h.status = CAM_RESRC_UNAVAIL; ccb->ccb_h.sim_priv.entries[0].ptr = camsc; event = malloc(sizeof(struct aac_event), M_AACCAM, M_NOWAIT | M_ZERO); if (event == NULL) { device_printf(sc->aac_dev, "Warning, out of memory for event\n"); return; } event->ev_callback = aac_cam_event; event->ev_arg = ccb; event->ev_type = AAC_EVENT_CMFREE; aac_add_event(sc, event); return; } fib = cm->cm_fib; srb = (struct aac_srb *)&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); /* Set command */ fib->Header.Command = (sc->flags & AAC_FLAGS_SG_64BIT) ? ScsiPortCommandU64 : ScsiPortCommand; /* Map the s/g list. XXX 32bit addresses only! */ if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { switch ((ccb->ccb_h.flags & CAM_DATA_MASK)) { case CAM_DATA_VADDR: srb->data_len = csio->dxfer_len; /* * 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_map; break; case CAM_DATA_PADDR: /* Send a 32bit command */ fib->Header.Command = ScsiPortCommand; srb->sg_map.SgCount = 1; srb->sg_map.SgEntry[0].SgAddress = (uint32_t)(uintptr_t)csio->data_ptr; srb->sg_map.SgEntry[0].SgByteCount = csio->dxfer_len; srb->data_len = csio->dxfer_len; break; default: /* XXX Need to handle multiple s/g elements */ panic("aac_cam: multiple s/g elements"); } } else { srb->sg_map.SgCount = 0; srb->sg_map.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_uptime; fib->Header.XferState = AAC_FIBSTATE_HOSTOWNED | AAC_FIBSTATE_INITIALISED | AAC_FIBSTATE_FROMHOST | AAC_FIBSTATE_REXPECTED | AAC_FIBSTATE_NORM; fib->Header.Size = sizeof(struct aac_fib_header) + sizeof(struct aac_srb); aac_enqueue_ready(cm); aac_startio(cm->cm_sc); } 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_fix_inquiry(struct aac_softc *sc, union ccb *ccb) { struct scsi_inquiry_data *inq; uint8_t *data; uint8_t device, qual; /* If this is an inquiry command, fake things out */ if (ccb->ccb_h.flags & CAM_CDB_POINTER) data = ccb->csio.cdb_io.cdb_ptr; else data = ccb->csio.cdb_io.cdb_bytes; if (data[0] != INQUIRY) return; if (ccb->ccb_h.status == CAM_REQ_CMP) { inq = (struct scsi_inquiry_data *)ccb->csio.data_ptr; device = SID_TYPE(inq); qual = SID_QUAL(inq); /* * 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))) { /* * Some aac(4) adapters will always report that a direct * access device is offline in response to a INQUIRY * command that does not retreive vital product data. * Force the qualifier to connected so that upper layers * correctly recognize that a disk is present. */ if ((data[1] & SI_EVPD) == 0 && device == T_DIRECT && qual == SID_QUAL_LU_OFFLINE) qual = SID_QUAL_LU_CONNECTED; ccb->csio.data_ptr[0] = (qual << 5) | T_NODEVICE; } } else if (ccb->ccb_h.status == CAM_SEL_TIMEOUT && ccb->ccb_h.target_lun != 0) { /* fix for INQUIRYs on Lun>0 */ ccb->ccb_h.status = CAM_DEV_NOT_THERE; } } static void aac_cam_complete(struct aac_command *cm) { union ccb *ccb; struct aac_srb_response *srbr; struct aac_softc *sc; int sense_returned; sc = cm->cm_sc; fwprintf(sc, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, ""); 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) { ccb->csio.scsi_status = srbr->scsi_status; /* Take care of autosense */ if (srbr->sense_len) { sense_returned = srbr->sense_len; if (sense_returned < ccb->csio.sense_len) ccb->csio.sense_resid = ccb->csio.sense_len - sense_returned; else ccb->csio.sense_resid = 0; bzero(&ccb->csio.sense_data, sizeof(struct scsi_sense_data)); bcopy(&srbr->sense[0], &ccb->csio.sense_data, min(ccb->csio.sense_len, sense_returned)); ccb->ccb_h.status |= CAM_AUTOSNS_VALID; // scsi_sense_print(&ccb->csio); } aac_cam_fix_inquiry(sc, ccb); } } aac_release_command(cm); xpt_done(ccb); } 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("aac: Null sc?\n"); return (CAM_REQ_ABORTED); } aac_alloc_sync_fib(sc, &fib); 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 %d sending ResetBus command\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); }