/*
* ppb_poll_bus()
*
* Polls the bus
*
* max is a delay in 10-milliseconds
*/
int
ppb_poll_bus(device_t bus, int max,
char mask, char status, int how)
{
struct ppb_data *ppb = DEVTOSOFTC(bus);
int i, j, error;
char r;
ppb_assert_locked(bus);
/* try at least up to 10ms */
for (j = 0; j < ((how & PPB_POLL) ? max : 1); j++) {
for (i = 0; i < 10000; i++) {
r = ppb_rstr(bus);
DELAY(1);
if ((r & mask) == status)
return (0);
}
}
if (!(how & PPB_POLL)) {
for (i = 0; max == PPB_FOREVER || i < max-1; i++) {
if ((ppb_rstr(bus) & mask) == status)
return (0);
/* wait 10 ms */
error = mtx_sleep((caddr_t)bus, ppb->ppc_lock, PPBPRI |
(how == PPB_NOINTR ? 0 : PCATCH), "ppbpoll", hz/100);
if (error != EWOULDBLOCK)
return (error);
}
}
return (EWOULDBLOCK);
}
/*
* ppb_ecp_sync()
*
* Wait for the ECP FIFO to be empty
*/
int
ppb_ecp_sync(device_t bus)
{
ppb_assert_locked(bus);
return (PPBUS_ECP_SYNC(device_get_parent(bus)));
}
/*
* ppb_reset_epp_timeout()
*
* Reset the EPP timeout bit in the status register
*/
int
ppb_reset_epp_timeout(device_t bus)
{
ppb_assert_locked(bus);
return(PPBUS_RESET_EPP(device_get_parent(bus)));
}
/*
* ppb_write()
*
* Write charaters to the port
*/
int
ppb_write(device_t bus, char *buf, int len, int how)
{
ppb_assert_locked(bus);
return (PPBUS_WRITE(device_get_parent(bus), buf, len, how));
}
/*
* ppb_get_mode()
*
*/
int
ppb_get_mode(device_t bus)
{
struct ppb_data *ppb = DEVTOSOFTC(bus);
/* XXX yet device mode = ppbus mode = chipset mode */
ppb_assert_locked(bus);
return (ppb->mode);
}
/* Reset bus by setting SDA first and then SCL. */
static void
lpbb_reset_bus(device_t dev)
{
device_t ppbus = device_get_parent(dev);
ppb_assert_locked(ppbus);
ppb_wdtr(ppbus, (u_char)~SDA_out);
ppb_wctr(ppbus, (u_char)(ppb_rctr(ppbus) | SCL_out));
}
/*
* ppb_get_epp_protocol()
*
* Return the chipset EPP protocol
*/
int
ppb_get_epp_protocol(device_t bus)
{
uintptr_t protocol;
ppb_assert_locked(bus);
BUS_READ_IVAR(device_get_parent(bus), bus, PPC_IVAR_EPP_PROTO, &protocol);
return (protocol);
}
/*
* ppb_set_mode()
*
* Set the operating mode of the chipset, return the previous mode
*/
int
ppb_set_mode(device_t bus, int mode)
{
struct ppb_data *ppb = DEVTOSOFTC(bus);
int old_mode = ppb_get_mode(bus);
ppb_assert_locked(bus);
if (PPBUS_SETMODE(device_get_parent(bus), mode))
return (-1);
/* XXX yet device mode = ppbus mode = chipset mode */
ppb->mode = (mode & PPB_MASK);
return (old_mode);
}
/*
* ppb_get_status()
*
* Read the status register and update the status info
*/
int
ppb_get_status(device_t bus, struct ppb_status *status)
{
register char r;
ppb_assert_locked(bus);
r = status->status = ppb_rstr(bus);
status->timeout = r & TIMEOUT;
status->error = !(r & nFAULT);
status->select = r & SELECT;
status->paper_end = r & PERROR;
status->ack = !(r & nACK);
status->busy = !(r & nBUSY);
return (0);
}
static void
vpo_action(struct cam_sim *sim, union ccb *ccb)
{
struct vpo_data *vpo = (struct vpo_data *)sim->softc;
ppb_assert_locked(device_get_parent(vpo->vpo_dev));
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
{
struct ccb_scsiio *csio;
csio = &ccb->csio;
#ifdef VP0_DEBUG
device_printf(vpo->vpo_dev, "XPT_SCSI_IO (0x%x) request\n",
csio->cdb_io.cdb_bytes[0]);
#endif
vpo_intr(vpo, csio);
xpt_done(ccb);
break;
}
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *ccg;
ccg = &ccb->ccg;
#ifdef VP0_DEBUG
device_printf(vpo->vpo_dev, "XPT_CALC_GEOMETRY (bs=%d,vs=%jd,c=%d,h=%d,spt=%d) request\n",
ccg->block_size,
(intmax_t)ccg->volume_size,
ccg->cylinders,
ccg->heads,
ccg->secs_per_track);
#endif
ccg->heads = 64;
ccg->secs_per_track = 32;
ccg->cylinders = ccg->volume_size /
(ccg->heads * ccg->secs_per_track);
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_RESET_BUS: /* Reset the specified SCSI bus */
{
#ifdef VP0_DEBUG
device_printf(vpo->vpo_dev, "XPT_RESET_BUS request\n");
#endif
if (vpo->vpo_isplus) {
if (imm_reset_bus(&vpo->vpo_io)) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
xpt_done(ccb);
return;
}
} else {
if (vpoio_reset_bus(&vpo->vpo_io)) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
xpt_done(ccb);
return;
}
}
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_PATH_INQ: /* Path routing inquiry */
{
struct ccb_pathinq *cpi = &ccb->cpi;
#ifdef VP0_DEBUG
device_printf(vpo->vpo_dev, "XPT_PATH_INQ request\n");
#endif
cpi->version_num = 1; /* XXX??? */
cpi->hba_inquiry = 0;
cpi->target_sprt = 0;
cpi->hba_misc = 0;
cpi->hba_eng_cnt = 0;
cpi->max_target = 7;
cpi->max_lun = 0;
cpi->initiator_id = VP0_INITIATOR;
cpi->bus_id = sim->bus_id;
cpi->base_transfer_speed = 93;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "Iomega", HBA_IDLEN);
strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
cpi->unit_number = sim->unit_number;
cpi->transport = XPORT_PPB;
cpi->transport_version = 0;
cpi->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
default:
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
return;
}