diff options
Diffstat (limited to 'sys/dev/amr/amr_cam.c')
| -rw-r--r-- | sys/dev/amr/amr_cam.c | 452 |
1 files changed, 0 insertions, 452 deletions
diff --git a/sys/dev/amr/amr_cam.c b/sys/dev/amr/amr_cam.c deleted file mode 100644 index 45ecc523c3aad..0000000000000 --- a/sys/dev/amr/amr_cam.c +++ /dev/null @@ -1,452 +0,0 @@ -/*- - * 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. - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/malloc.h> -#include <sys/kernel.h> - -#include <dev/amr/amr_compat.h> -#include <sys/bus.h> -#include <sys/conf.h> -#include <sys/devicestat.h> -#include <sys/disk.h> -#include <sys/stat.h> - -#include <cam/cam.h> -#include <cam/cam_ccb.h> -#include <cam/cam_sim.h> -#include <cam/cam_xpt.h> -#include <cam/cam_xpt_sim.h> -#include <cam/cam_debug.h> -#include <cam/scsi/scsi_all.h> -#include <cam/scsi/scsi_message.h> - -#include <machine/resource.h> -#include <machine/bus.h> - -#include <dev/amr/amrreg.h> -#include <dev/amr/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); - - -/******************************************************************************** - * Enqueue/dequeue functions - */ -static __inline void -amr_enqueue_ccb(struct amr_softc *sc, union ccb *ccb) -{ - int s; - - s = splbio(); - TAILQ_INSERT_TAIL(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe); - splx(s); -} - -static __inline void -amr_requeue_ccb(struct amr_softc *sc, union ccb *ccb) -{ - int s; - - s = splbio(); - TAILQ_INSERT_HEAD(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe); - splx(s); -} - -static __inline union ccb * -amr_dequeue_ccb(struct amr_softc *sc) -{ - union ccb *ccb; - int s; - - s = splbio(); - if ((ccb = (union ccb *)TAILQ_FIRST(&sc->amr_cam_ccbq)) != NULL) - TAILQ_REMOVE(&sc->amr_cam_ccbq, &ccb->ccb_h, sim_links.tqe); - splx(s); - 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) { - cam_simq_free(devq); - 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); - } - } - /* - * 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, first; - - for (chn = 0, first = 1; chn < sc->amr_maxchan; chn++) { - - /* - * If a sim was allocated for this channel, free it - */ - 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], first ? TRUE : FALSE); - first = 0; - } - } -} - -/******************************************************************************** - ******************************************************************************** - 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_CDB_LEN) - 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; - - cpi->version_num = 1; /* XXX??? */ - cpi->hba_inquiry = PI_SDTR_ABLE; - cpi->target_sprt = 0; - cpi->hba_misc = 0; - cpi->hba_eng_cnt = 0; - cpi->max_target = AMR_MAX_TARGETS; - cpi->max_lun = AMR_MAX_LUNS; - cpi->initiator_id = 7; /* XXX variable? */ - strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); - strncpy(cpi->hba_vid, "BSDi", 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; - } - - /* - * 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 ccb_scsiio *csio; - int bus, target, error; - - error = 0; - ac = NULL; - ap = 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 ((ap = malloc(sizeof(*ap), M_DEVBUF, M_NOWAIT)) == NULL) { - error = ENOMEM; - goto out; - } - bzero(ap, sizeof(*ap)); - 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; - 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_data = ap; - ac->ac_length = sizeof(*ap); - 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_complete = amr_cam_complete; - ac->ac_private = csio; - 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 (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 0 - 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 { -#else - { -#endif - - /* 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); -} - |