static int
ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize,
daddr_t blkno, struct buf *bp)
{
int rv;
struct twa_request *tr;
struct twa_softc *twa;
twa = device_private(device_parent(sc->sc_ld.sc_dv));
if ((tr = twa_get_request(twa, 0)) == NULL) {
return (EAGAIN);
}
if (bp->b_flags & B_READ) {
tr->tr_flags = TWA_CMD_DATA_OUT;
} else {
tr->tr_flags = TWA_CMD_DATA_IN;
}
tr->tr_data = data;
tr->tr_length = datasize;
tr->tr_cmd_pkt_type =
(TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL);
tr->tr_command->cmd_hdr.header_desc.size_header = 128;
tr->tr_command->command.cmd_pkt_9k.command.opcode =
TWA_OP_EXECUTE_SCSI_COMMAND;
tr->tr_command->command.cmd_pkt_9k.unit =
sc->sc_hwunit;
tr->tr_command->command.cmd_pkt_9k.request_id =
tr->tr_request_id;
tr->tr_command->command.cmd_pkt_9k.status = 0;
tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1;
tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16;
/* offset from end of hdr = max cdb len */
ld_twa_scsicmd(sc, tr, bp);
tr->tr_callback = ld_twa_handler;
tr->tr_ld_sc = sc;
tr->bp = bp;
rv = twa_map_request(tr);
return (rv);
}
/*
* Function name: twa_action
* Description: Driver entry point for CAM's use.
*
* Input: sim -- sim corresponding to the ctlr
* ccb -- ptr to CAM request
* Output: None
* Return value: None
*/
void
twa_action(struct cam_sim *sim, union ccb *ccb)
{
struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim);
struct ccb_hdr *ccb_h = &(ccb->ccb_h);
switch (ccb_h->func_code) {
case XPT_SCSI_IO: /* SCSI I/O */
{
struct twa_request *tr;
if ((sc->twa_state & TWA_STATE_SIMQ_FROZEN) ||
((tr = twa_get_request(sc)) == NULL)) {
twa_dbg_dprint(2, sc, "simq frozen/Cannot get request pkt.");
/*
* Freeze the simq to maintain ccb ordering. The next
* ccb that gets completed will unfreeze the simq.
*/
twa_disallow_new_requests(sc);
ccb_h->status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
break;
}
tr->tr_cmd_pkt_type |= TWA_CMD_PKT_TYPE_EXTERNAL;
tr->tr_private = ccb;
tr->tr_callback = twa_complete_io;
if (twa_execute_scsi(tr, ccb))
twa_release_request(tr);
break;
}
case XPT_ABORT:
twa_dbg_dprint(2, sc, "Abort request");
ccb_h->status = CAM_UA_ABORT;
xpt_done(ccb);
break;
case XPT_RESET_BUS:
twa_printf(sc, "Reset Bus request from CAM...\n");
if (twa_reset(sc)) {
twa_printf(sc, "Reset Bus failed!\n");
ccb_h->status = CAM_REQ_CMP_ERR;
}
else
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
case XPT_SET_TRAN_SETTINGS:
twa_dbg_dprint(3, sc, "XPT_SET_TRAN_SETTINGS");
/*
* This command is not supported, since it's very specific
* to SCSI, and we are doing ATA.
*/
ccb_h->status = CAM_FUNC_NOTAVAIL;
xpt_done(ccb);
break;
case XPT_GET_TRAN_SETTINGS:
{
struct ccb_trans_settings *cts = &ccb->cts;
twa_dbg_dprint(3, sc, "XPT_GET_TRAN_SETTINGS");
cts->valid = (CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID);
cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB);
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *geom;
twa_dbg_dprint(3, sc, "XPT_CALC_GEOMETRY request");
geom = &ccb->ccg;
if (geom->volume_size > 0x200000) /* 1 GB */ {
geom->heads = 255;
geom->secs_per_track = 63;
} else {
geom->heads = 64;
geom->secs_per_track = 32;
}
geom->cylinders = geom->volume_size /
(geom->heads * geom->secs_per_track);
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_PATH_INQ: /* Path inquiry -- get twa properties */
{
struct ccb_pathinq *path_inq = &ccb->cpi;
twa_dbg_dprint(3, sc, "XPT_PATH_INQ request");
path_inq->version_num = 1;
path_inq->hba_inquiry = 0;
path_inq->target_sprt = 0;
path_inq->hba_misc = 0;
path_inq->hba_eng_cnt = 0;
path_inq->max_target = TWA_MAX_UNITS;
path_inq->max_lun = 0;
path_inq->unit_number = cam_sim_unit(sim);
path_inq->bus_id = cam_sim_bus(sim);
path_inq->initiator_id = 12;
path_inq->base_transfer_speed = 100000;
strncpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(path_inq->hba_vid, "3ware", HBA_IDLEN);
strncpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN);
ccb_h->status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
default:
twa_dbg_dprint(3, sc, "func_code = %x", ccb_h->func_code);
ccb_h->status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
}
