/*- * Copyright (c) 2000 Michael Smith * Copyright (c) 2000 BSDi * 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. * * Copyright (c) 2002 Eric Moore * Copyright (c) 2002 LSI Logic Corporation * 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. * 3. The party using or redistributing the source code and binary forms * agrees to the disclaimer below and the terms and conditions set forth * herein. * * 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/amr/amr_cam.c,v 1.1.2.3 2002/11/11 13:19:10 emoore Exp $ * $DragonFly: src/sys/dev/raid/amr/amr_cam.c,v 1.6 2005/06/09 20:55:05 swildner Exp $ */ #include #include #include #include #include "amr_compat.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "amrreg.h" #include "amrvar.h" static void amr_cam_action(struct cam_sim *sim, union ccb *ccb); static void amr_cam_poll(struct cam_sim *sim); static void amr_cam_complete(struct amr_command *ac); static void amr_cam_complete_extcdb(struct amr_command *ac); /******************************************************************************** * Enqueue/dequeue functions */ static __inline void amr_enqueue_ccb(struct amr_softc *sc, union ccb *ccb) { crit_enter(); TAILQ_INSERT_TAIL(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe); crit_exit(); } static __inline void amr_requeue_ccb(struct amr_softc *sc, union ccb *ccb) { crit_enter(); TAILQ_INSERT_HEAD(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe); crit_exit(); } static __inline union ccb * amr_dequeue_ccb(struct amr_softc *sc) { union ccb *ccb; crit_enter(); if ((ccb = (union ccb *)TAILQ_FIRST(&sc->amr_cam_ccbq)) != NULL) TAILQ_REMOVE(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe); crit_exit(); return(ccb); } /******************************************************************************** * Attach our 'real' SCSI channels to CAM */ int amr_cam_attach(struct amr_softc *sc) { struct cam_devq *devq; int chn; /* initialise the ccb queue */ TAILQ_INIT(&sc->amr_cam_ccbq); /* * Allocate a devq for all our channels combined. This should * allow for the maximum number of SCSI commands we will accept * at one time. */ if ((devq = cam_simq_alloc(AMR_MAX_SCSI_CMDS)) == NULL) return(ENOMEM); /* * Iterate over our channels, registering them with CAM */ for (chn = 0; chn < sc->amr_maxchan; chn++) { /* allocate a sim */ if ((sc->amr_cam_sim[chn] = cam_sim_alloc(amr_cam_action, amr_cam_poll, "amr", sc, device_get_unit(sc->amr_dev), 1, AMR_MAX_SCSI_CMDS, devq)) == NULL) { device_printf(sc->amr_dev, "CAM SIM attach failed\n"); return(ENOMEM); } /* register the bus ID so we can get it later */ if (xpt_bus_register(sc->amr_cam_sim[chn], chn)) { device_printf(sc->amr_dev, "CAM XPT bus registration failed\n"); return(ENXIO); } } cam_simq_release(devq); /* * XXX we should scan the config and work out which devices are actually * protected. */ return(0); } /******************************************************************************** * Disconnect ourselves from CAM */ void amr_cam_detach(struct amr_softc *sc) { int chn; /* * If a sim was allocated for a channel, free it */ for (chn = 0; chn < sc->amr_maxchan; chn++) { if (sc->amr_cam_sim[chn] != NULL) { xpt_bus_deregister(cam_sim_path(sc->amr_cam_sim[chn])); cam_sim_free(sc->amr_cam_sim[chn]); } } } /******************************************************************************** ******************************************************************************** CAM passthrough interface ******************************************************************************** ********************************************************************************/ /******************************************************************************** * Handle a request for action from CAM */ static void amr_cam_action(struct cam_sim *sim, union ccb *ccb) { struct amr_softc *sc = cam_sim_softc(sim); switch(ccb->ccb_h.func_code) { /* * Perform SCSI I/O to a physical device. */ case XPT_SCSI_IO: { struct ccb_hdr *ccbh = &ccb->ccb_h; struct ccb_scsiio *csio = &ccb->csio; /* Validate the CCB */ ccbh->status = CAM_REQ_INPROG; /* check the CDB length */ if (csio->cdb_len > AMR_MAX_EXTCDB_LEN) ccbh->status = CAM_REQ_CMP_ERR; if ((csio->cdb_len > AMR_MAX_CDB_LEN) && (sc->support_ext_cdb == 0 )) ccbh->status = CAM_REQ_CMP_ERR; /* check that the CDB pointer is not to a physical address */ if ((ccbh->flags & CAM_CDB_POINTER) && (ccbh->flags & CAM_CDB_PHYS)) ccbh->status = CAM_REQ_CMP_ERR; /* if there is data transfer, it must be to/from a virtual address */ if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { if (ccbh->flags & CAM_DATA_PHYS) /* we can't map it */ ccbh->status = CAM_REQ_CMP_ERR; if (ccbh->flags & CAM_SCATTER_VALID) /* we want to do the s/g setup */ ccbh->status = CAM_REQ_CMP_ERR; } /* * If the command is to a LUN other than 0, fail it. * This is probably incorrect, but during testing the firmware did not * seem to respect the LUN field, and thus devices appear echoed. */ if (csio->ccb_h.target_lun != 0) ccbh->status = CAM_REQ_CMP_ERR; /* if we're happy with the request, queue it for attention */ if (ccbh->status == CAM_REQ_INPROG) { /* save the channel number in the ccb */ csio->ccb_h.sim_priv.entries[0].field = cam_sim_bus(sim); amr_enqueue_ccb(sc, ccb); amr_startio(sc); return; } break; } case XPT_CALC_GEOMETRY: { struct ccb_calc_geometry *ccg = &ccb->ccg; u_int32_t size_in_mb; u_int32_t secs_per_cylinder; size_in_mb = ccg->volume_size / ((1024L * 1024L) / ccg->block_size); if (size_in_mb > 1024) { ccg->heads = 255; ccg->secs_per_track = 63; } 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; break; } /* * Return path stats. Some of these should probably be * amended. */ case XPT_PATH_INQ: { struct ccb_pathinq *cpi = & ccb->cpi; debug(3, "XPT_PATH_INQ"); cpi->version_num = 1; /* XXX??? */ cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16; cpi->target_sprt = 0; cpi->hba_misc = PIM_NOBUSRESET; cpi->hba_eng_cnt = 0; cpi->max_target = AMR_MAX_TARGETS; cpi->max_lun = 0 /* AMR_MAX_LUNS*/; cpi->initiator_id = 7; /* XXX variable? */ strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); strncpy(cpi->hba_vid, "LSI", HBA_IDLEN); strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); cpi->unit_number = cam_sim_unit(sim); cpi->bus_id = cam_sim_bus(sim); cpi->base_transfer_speed = 132 * 1024; /* XXX get from controller? */ cpi->ccb_h.status = CAM_REQ_CMP; break; } case XPT_RESET_BUS: { struct ccb_pathinq *cpi = & ccb->cpi; debug(1, "XPT_RESET_BUS"); cpi->ccb_h.status = CAM_REQ_CMP; break; } case XPT_RESET_DEV: { debug(1, "XPT_RESET_DEV"); ccb->ccb_h.status = CAM_REQ_CMP; break; } case XPT_GET_TRAN_SETTINGS: { struct ccb_trans_settings *cts; debug(3, "XPT_GET_TRAN_SETTINGS"); cts = &(ccb->cts); if ((cts->flags & CCB_TRANS_USER_SETTINGS) == 0) { ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; break; } cts->flags = CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB; cts->bus_width = MSG_EXT_WDTR_BUS_32_BIT; cts->sync_period = 6; /* 40MHz how wide is this bus? */ cts->sync_offset = 31; /* How to extract this from board? */ cts->valid = CCB_TRANS_SYNC_RATE_VALID | CCB_TRANS_SYNC_OFFSET_VALID | CCB_TRANS_BUS_WIDTH_VALID | CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID; ccb->ccb_h.status = CAM_REQ_CMP; break; } case XPT_SET_TRAN_SETTINGS: debug(3, "XPT_SET_TRAN_SETTINGS"); ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; break; /* * Reject anything else as unsupported. */ default: /* we can't do this */ ccb->ccb_h.status = CAM_REQ_INVALID; break; } xpt_done(ccb); } /******************************************************************************** * Convert a CAM CCB off the top of the CCB queue to a passthrough SCSI command. */ int amr_cam_command(struct amr_softc *sc, struct amr_command **acp) { struct amr_command *ac; struct amr_passthrough *ap; struct amr_ext_passthrough *aep; struct ccb_scsiio *csio; int bus, target, error; error = 0; ac = NULL; ap = NULL; aep = NULL; /* check to see if there is a ccb for us to work with */ if ((csio = (struct ccb_scsiio *)amr_dequeue_ccb(sc)) == NULL) goto out; /* get bus/target, XXX validate against protected devices? */ bus = csio->ccb_h.sim_priv.entries[0].field; target = csio->ccb_h.target_id; /* * Build a passthrough command. */ /* construct passthrough */ if (sc->support_ext_cdb ) { aep = malloc(sizeof(*aep), M_DEVBUF, M_INTWAIT | M_ZERO); aep->ap_timeout = 2; aep->ap_ars = 1; aep->ap_request_sense_length = 14; aep->ap_islogical = 0; aep->ap_channel = bus; aep->ap_scsi_id = target; aep->ap_logical_drive_no = csio->ccb_h.target_lun; aep->ap_cdb_length = csio->cdb_len; aep->ap_data_transfer_length = csio->dxfer_len; if (csio->ccb_h.flags & CAM_CDB_POINTER) { bcopy(csio->cdb_io.cdb_ptr, aep->ap_cdb, csio->cdb_len); } else { bcopy(csio->cdb_io.cdb_bytes, aep->ap_cdb, csio->cdb_len); } /* we leave the data s/g list and s/g count to the map routine later */ debug(2, " COMMAND %x/%d+%d to %d:%d:%d", aep->ap_cdb[0], aep->ap_cdb_length, csio->dxfer_len, aep->ap_channel, aep->ap_scsi_id, aep->ap_logical_drive_no); } else { ap = malloc(sizeof(*ap), M_DEVBUF, M_INTWAIT | M_ZERO); ap->ap_timeout = 0; ap->ap_ars = 1; ap->ap_request_sense_length = 14; ap->ap_islogical = 0; ap->ap_channel = bus; ap->ap_scsi_id = target; ap->ap_logical_drive_no = csio->ccb_h.target_lun; ap->ap_cdb_length = csio->cdb_len; ap->ap_data_transfer_length = csio->dxfer_len; if (csio->ccb_h.flags & CAM_CDB_POINTER) { bcopy(csio->cdb_io.cdb_ptr, ap->ap_cdb, csio->cdb_len); } else { bcopy(csio->cdb_io.cdb_bytes, ap->ap_cdb, csio->cdb_len); } /* we leave the data s/g list and s/g count to the map routine later */ debug(2, " COMMAND %x/%d+%d to %d:%d:%d", ap->ap_cdb[0], ap->ap_cdb_length, csio->dxfer_len, ap->ap_channel, ap->ap_scsi_id, ap->ap_logical_drive_no); } /* construct command */ if ((ac = amr_alloccmd(sc)) == NULL) { error = ENOMEM; goto out; } ac->ac_flags |= AMR_CMD_DATAOUT; ac->ac_ccb_data = csio->data_ptr; ac->ac_ccb_length = csio->dxfer_len; if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) ac->ac_flags |= AMR_CMD_CCB_DATAIN; if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) ac->ac_flags |= AMR_CMD_CCB_DATAOUT; ac->ac_private = csio; if ( sc->support_ext_cdb ) { ac->ac_data = aep; ac->ac_length = sizeof(*aep); ac->ac_complete = amr_cam_complete_extcdb; ac->ac_mailbox.mb_command = AMR_CMD_EXTPASS; } else { ac->ac_data = ap; ac->ac_length = sizeof(*ap); ac->ac_complete = amr_cam_complete; ac->ac_mailbox.mb_command = AMR_CMD_PASS; } out: if (error != 0) { if (ac != NULL) amr_releasecmd(ac); if (ap != NULL) free(ap, M_DEVBUF); if (aep != NULL) free(aep, M_DEVBUF); if (csio != NULL) /* put it back and try again later */ amr_requeue_ccb(sc, (union ccb *)csio); } *acp = ac; return(error); } /******************************************************************************** * Check for interrupt status */ static void amr_cam_poll(struct cam_sim *sim) { amr_done(cam_sim_softc(sim)); } /******************************************************************************** * Handle completion of a command submitted via CAM. */ static void amr_cam_complete(struct amr_command *ac) { struct amr_passthrough *ap = (struct amr_passthrough *)ac->ac_data; struct ccb_scsiio *csio = (struct ccb_scsiio *)ac->ac_private; struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; /* XXX note that we're ignoring ac->ac_status - good idea? */ debug(1, "status 0x%x scsi_status 0x%x", ac->ac_status, ap->ap_scsi_status); /* * Hide disks from CAM so that they're not picked up and treated as 'normal' disks. * * If the configuration provides a mechanism to mark a disk a "not managed", we * could add handling for that to allow disks to be selectively visible. */ if ((ap->ap_cdb[0] == INQUIRY) && (SID_TYPE(inq) == T_DIRECT)) { bzero(csio->data_ptr, csio->dxfer_len); if (ap->ap_scsi_status == 0xf0) { csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; } else { csio->ccb_h.status = CAM_DEV_NOT_THERE; } } else { /* handle passthrough SCSI status */ switch(ap->ap_scsi_status) { case 0: /* completed OK */ csio->ccb_h.status = CAM_REQ_CMP; break; case 0x02: csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; csio->scsi_status = SCSI_STATUS_CHECK_COND; bcopy(ap->ap_request_sense_area, &csio->sense_data, AMR_MAX_REQ_SENSE_LEN); csio->sense_len = AMR_MAX_REQ_SENSE_LEN; csio->ccb_h.status |= CAM_AUTOSNS_VALID; break; case 0x08: csio->ccb_h.status = CAM_SCSI_BUSY; break; case 0xf0: case 0xf4: default: csio->ccb_h.status = CAM_REQ_CMP_ERR; break; } } free(ap, M_DEVBUF); if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr, " "); xpt_done((union ccb *)csio); amr_releasecmd(ac); } /******************************************************************************** * Handle completion of a command submitted via CAM. * Completion for extended cdb */ static void amr_cam_complete_extcdb(struct amr_command *ac) { struct amr_ext_passthrough *aep = (struct amr_ext_passthrough *)ac->ac_data; struct ccb_scsiio *csio = (struct ccb_scsiio *)ac->ac_private; struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; /* XXX note that we're ignoring ac->ac_status - good idea? */ debug(1, "status 0x%x scsi_status 0x%x", ac->ac_status, aep->ap_scsi_status); /* * Hide disks from CAM so that they're not picked up and treated as 'normal' disks. * * If the configuration provides a mechanism to mark a disk a "not managed", we * could add handling for that to allow disks to be selectively visible. */ if ((aep->ap_cdb[0] == INQUIRY) && (SID_TYPE(inq) == T_DIRECT)) { bzero(csio->data_ptr, csio->dxfer_len); if (aep->ap_scsi_status == 0xf0) { csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; } else { csio->ccb_h.status = CAM_DEV_NOT_THERE; } } else { /* handle passthrough SCSI status */ switch(aep->ap_scsi_status) { case 0: /* completed OK */ csio->ccb_h.status = CAM_REQ_CMP; break; case 0x02: csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; csio->scsi_status = SCSI_STATUS_CHECK_COND; bcopy(aep->ap_request_sense_area, &csio->sense_data, AMR_MAX_REQ_SENSE_LEN); csio->sense_len = AMR_MAX_REQ_SENSE_LEN; csio->ccb_h.status |= CAM_AUTOSNS_VALID; break; case 0x08: csio->ccb_h.status = CAM_SCSI_BUSY; break; case 0xf0: case 0xf4: default: csio->ccb_h.status = CAM_REQ_CMP_ERR; break; } } free(aep, M_DEVBUF); if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) debug(2, "%*D\n", imin(csio->dxfer_len, 16), csio->data_ptr, " "); xpt_done((union ccb *)csio); amr_releasecmd(ac); }