/***********************************************************
Function Name: Exec_writeEventFifo
Function Description: This function is responsible for
writing a single event to the event fifo and
updating the appropriate pointers.
Inputs: data - the byte to write to the Fifo
Outputs: none
***********************************************************/
void Exec_writeEventFifo(unsigned char event)
{
unsigned char tmpHead;
DISABLE_INTS();
Exec_eventFifo[Exec_eventFifoHead] = event;
/* now move the head up */
tmpHead = (Exec_eventFifoHead + 1) & (EXEC_EVENT_FIFO_MASK);
Exec_eventFifoHead = tmpHead;
ENABLE_INTS();
}
/***********************************************************
Function Name: Exec_readEventFifo
Function Description: This function is responsible for
reading a single event out of the event fifo.
Inputs: none
Outputs: unsigned char-the data read
***********************************************************/
static unsigned char Exec_readEventFifo(void)
{
unsigned char dataByte, tmpTail;
DISABLE_INTS();
/* just return the current tail from the tx fifo */
dataByte = Exec_eventFifo[Exec_eventFifoTail];
tmpTail = (Exec_eventFifoTail+1) & (EXEC_EVENT_FIFO_MASK);
Exec_eventFifoTail = tmpTail;
ENABLE_INTS();
return(dataByte);
}
//----------------------------------------------------------
// Main entry point
//----------------------------------------------------------
int main(void)
{
initSystem();
// ------------------------------------------
#ifdef USE_THREADS
MESSAGE("Using threads");
// never returns
startThreads(appMain, systemMain);
// if we're here, something went wrong
ASSERT(!"systemMain returned?!");
// ------------------------------------------
#else
ENABLE_INTS();
#ifdef USE_PROTOTHREADS
startProtoSched();
#else
MESSAGE("Not using threads");
appMain();
#endif
//
// Do not allow to return from this function. The reason:
// GCC 4.5+ disables interrupts after completion of main() function,
// but MansOS applications may want to return from appMain()
// and do all the "real work" in interrupt handlers.
// Therefore, interrupts must be kept enabled.
//
for (;;) {}
#endif // USE_THREADS
return 0;
}
static void
isp_action(struct cam_sim *sim, union ccb *ccb)
{
int s, tgt, error;
struct ispsoftc *isp;
struct ccb_trans_settings *cts;
CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("isp_action\n"));
isp = (struct ispsoftc *)cam_sim_softc(sim);
ccb->ccb_h.sim_priv.entries[0].field = 0;
ccb->ccb_h.sim_priv.entries[1].ptr = isp;
/*
* This should only happen for Fibre Channel adapters.
* We want to pass through all but XPT_SCSI_IO (e.g.,
* path inquiry) but fail if we can't get good Fibre
* Channel link status.
*/
if (ccb->ccb_h.func_code == XPT_SCSI_IO &&
isp->isp_state != ISP_RUNSTATE) {
s = splcam();
DISABLE_INTS(isp);
isp_init(isp);
if (isp->isp_state != ISP_INITSTATE) {
(void) splx(s);
/*
* Lie. Say it was a selection timeout.
*/
ccb->ccb_h.status = CAM_SEL_TIMEOUT;
xpt_done(ccb);
return;
}
isp->isp_state = ISP_RUNSTATE;
ENABLE_INTS(isp);
(void) splx(s);
}
IDPRINTF(4, ("%s: isp_action code %x\n", isp->isp_name,
ccb->ccb_h.func_code));
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO: /* Execute the requested I/O operation */
/*
* Do a couple of preliminary checks...
*/
if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) {
if ((ccb->ccb_h.flags & CAM_CDB_PHYS) != 0) {
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
}
if (isp->isp_type & ISP_HA_SCSI) {
if (ccb->ccb_h.target_id > (MAX_TARGETS-1)) {
ccb->ccb_h.status = CAM_PATH_INVALID;
} else if (ISP_FW_REVX(isp->isp_fwrev) >=
ISP_FW_REV(7, 55, 0)) {
/*
* Too much breakage.
*/
#if 0
if (ccb->ccb_h.target_lun > 31) {
ccb->ccb_h.status = CAM_PATH_INVALID;
}
#else
if (ccb->ccb_h.target_lun > 7) {
ccb->ccb_h.status = CAM_PATH_INVALID;
}
#endif
} else if (ccb->ccb_h.target_lun > 7) {
ccb->ccb_h.status = CAM_PATH_INVALID;
}
} else {
if (ccb->ccb_h.target_id > (MAX_FC_TARG-1)) {
ccb->ccb_h.status = CAM_PATH_INVALID;
#ifdef SCCLUN
} else if (ccb->ccb_h.target_lun > 15) {
ccb->ccb_h.status = CAM_PATH_INVALID;
#else
} else if (ccb->ccb_h.target_lun > 65535) {
ccb->ccb_h.status = CAM_PATH_INVALID;
#endif
}
}
if (ccb->ccb_h.status == CAM_PATH_INVALID) {
printf("%s: invalid tgt/lun (%d.%d) in XPT_SCSI_IO\n",
isp->isp_name, ccb->ccb_h.target_id,
ccb->ccb_h.target_lun);
xpt_done(ccb);
break;
}
s = splcam();
DISABLE_INTS(isp);
switch (ispscsicmd((ISP_SCSI_XFER_T *) ccb)) {
case CMD_QUEUED:
ccb->ccb_h.status |= CAM_SIM_QUEUED;
break;
case CMD_EAGAIN:
if (!(isp->isp_osinfo.simqfrozen & SIMQFRZ_RESOURCE)) {
xpt_freeze_simq(sim, 1);
isp->isp_osinfo.simqfrozen |= SIMQFRZ_RESOURCE;
}
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
ccb->ccb_h.status |= CAM_REQUEUE_REQ;
xpt_done(ccb);
break;
case CMD_COMPLETE:
/*
* Just make sure that we didn't get it returned
* as completed, but with the request still in
* progress. In theory, 'cannot happen'.
*/
if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
CAM_REQ_INPROG) {
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
}
xpt_done(ccb);
break;
}
ENABLE_INTS(isp);
splx(s);
break;
case XPT_EN_LUN: /* Enable LUN as a target */
case XPT_TARGET_IO: /* Execute target I/O request */
case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
case XPT_RESET_DEV: /* BDR the specified SCSI device */
tgt = ccb->ccb_h.target_id; /* XXX: Which Bus? */
s = splcam();
error = isp_control(isp, ISPCTL_RESET_DEV, &tgt);
(void) splx(s);
if (error) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
} else {
ccb->ccb_h.status = CAM_REQ_CMP;
}
xpt_done(ccb);
break;
case XPT_ABORT: /* Abort the specified CCB */
s = splcam();
error = isp_control(isp, ISPCTL_ABORT_CMD, ccb);
(void) splx(s);
if (error) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
} else {
ccb->ccb_h.status = CAM_REQ_CMP;
}
xpt_done(ccb);
break;
case XPT_SET_TRAN_SETTINGS: /* Nexus Settings */
cts = &ccb->cts;
tgt = cts->ccb_h.target_id;
s = splcam();
if (isp->isp_type & ISP_HA_FC) {
; /* nothing to change */
} else {
sdparam *sdp = isp->isp_param;
u_int16_t *dptr;
int bus = cam_sim_bus(xpt_path_sim(cts->ccb_h.path));
sdp += bus;
#if 0
if (cts->flags & CCB_TRANS_CURRENT_SETTINGS)
dptr = &sdp->isp_devparam[tgt].cur_dflags;
else
dptr = &sdp->isp_devparam[tgt].dev_flags;
#else
/*
* We always update (internally) from dev_flags
* so any request to change settings just gets
* vectored to that location.
*/
dptr = &sdp->isp_devparam[tgt].dev_flags;
#endif
/*
* Note that these operations affect the
* the goal flags (dev_flags)- not
* the current state flags. Then we mark
* things so that the next operation to
* this HBA will cause the update to occur.
*/
if (cts->valid & CCB_TRANS_DISC_VALID) {
if ((cts->flags & CCB_TRANS_DISC_ENB) != 0) {
*dptr |= DPARM_DISC;
} else {
*dptr &= ~DPARM_DISC;
}
}
if (cts->valid & CCB_TRANS_TQ_VALID) {
if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) {
*dptr |= DPARM_TQING;
} else {
*dptr &= ~DPARM_TQING;
}
}
if (cts->valid & CCB_TRANS_BUS_WIDTH_VALID) {
switch (cts->bus_width) {
case MSG_EXT_WDTR_BUS_16_BIT:
*dptr |= DPARM_WIDE;
break;
default:
*dptr &= ~DPARM_WIDE;
}
}
/*
* Any SYNC RATE of nonzero and SYNC_OFFSET
* of nonzero will cause us to go to the
* selected (from NVRAM) maximum value for
* this device. At a later point, we'll
* allow finer control.
*/
if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) &&
(cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) &&
(cts->sync_offset > 0)) {
*dptr |= DPARM_SYNC;
} else {
*dptr &= ~DPARM_SYNC;
}
if (bootverbose || isp->isp_dblev >= 3)
printf("%s: %d.%d set %s period 0x%x offset "
"0x%x flags 0x%x\n", isp->isp_name, bus,
tgt,
(cts->flags & CCB_TRANS_CURRENT_SETTINGS)?
"current" : "user",
sdp->isp_devparam[tgt].sync_period,
sdp->isp_devparam[tgt].sync_offset,
sdp->isp_devparam[tgt].dev_flags);
s = splcam();
sdp->isp_devparam[tgt].dev_update = 1;
isp->isp_update |= (1 << bus);
(void) isp_control(isp, ISPCTL_UPDATE_PARAMS, NULL);
(void) splx(s);
}
(void) splx(s);
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
case XPT_GET_TRAN_SETTINGS:
cts = &ccb->cts;
tgt = cts->ccb_h.target_id;
if (isp->isp_type & ISP_HA_FC) {
/*
* a lot of normal SCSI things don't make sense.
*/
cts->flags = CCB_TRANS_TAG_ENB | CCB_TRANS_DISC_ENB;
cts->valid = CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
/*
* How do you measure the width of a high
* speed serial bus? Well, in bytes.
*
* Offset and period make no sense, though, so we set
* (above) a 'base' transfer speed to be gigabit.
*/
cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
} else {
sdparam *sdp = isp->isp_param;
u_int16_t dval, pval, oval;
int bus = cam_sim_bus(xpt_path_sim(cts->ccb_h.path));
sdp += bus;
if (cts->flags & CCB_TRANS_CURRENT_SETTINGS) {
s = splcam();
/*
* First do a refresh to see if things
* have changed recently!
*/
sdp->isp_devparam[tgt].dev_refresh = 1;
isp->isp_update |= (1 << bus);
(void) isp_control(isp, ISPCTL_UPDATE_PARAMS,
NULL);
(void) splx(s);
dval = sdp->isp_devparam[tgt].cur_dflags;
oval = sdp->isp_devparam[tgt].cur_offset;
pval = sdp->isp_devparam[tgt].cur_period;
} else {
dval = sdp->isp_devparam[tgt].dev_flags;
oval = sdp->isp_devparam[tgt].sync_offset;
pval = sdp->isp_devparam[tgt].sync_period;
}
s = splcam();
cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
if (dval & DPARM_DISC) {
cts->flags |= CCB_TRANS_DISC_ENB;
}
if (dval & DPARM_TQING) {
cts->flags |= CCB_TRANS_TAG_ENB;
}
if (dval & DPARM_WIDE) {
cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
} else {
cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
}
cts->valid = CCB_TRANS_BUS_WIDTH_VALID |
CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
if ((dval & DPARM_SYNC) && oval != 0) {
cts->sync_period = pval;
cts->sync_offset = oval;
cts->valid |=
CCB_TRANS_SYNC_RATE_VALID |
CCB_TRANS_SYNC_OFFSET_VALID;
}
splx(s);
if (bootverbose || isp->isp_dblev >= 3)
printf("%s: %d.%d get %s period 0x%x offset "
"0x%x flags 0x%x\n", isp->isp_name, bus,
tgt,
(cts->flags & CCB_TRANS_CURRENT_SETTINGS)?
"current" : "user", pval, oval, dval);
}
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *ccg;
u_int32_t secs_per_cylinder;
u_int32_t size_mb;
ccg = &ccb->ccg;
if (ccg->block_size == 0) {
printf("%s: %d.%d XPT_CALC_GEOMETRY block size 0?\n",
isp->isp_name, ccg->ccb_h.target_id,
ccg->ccb_h.target_lun);
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
size_mb = ccg->volume_size /((1024L * 1024L) / ccg->block_size);
if (size_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;
xpt_done(ccb);
break;
}
case XPT_RESET_BUS: /* Reset the specified bus */
tgt = cam_sim_bus(sim);
s = splcam();
error = isp_control(isp, ISPCTL_RESET_BUS, &tgt);
(void) splx(s);
if (error)
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
else {
if (cam_sim_bus(sim) && isp->isp_path2 != NULL)
xpt_async(AC_BUS_RESET, isp->isp_path2, NULL);
else if (isp->isp_path != NULL)
xpt_async(AC_BUS_RESET, isp->isp_path, NULL);
ccb->ccb_h.status = CAM_REQ_CMP;
}
xpt_done(ccb);
break;
case XPT_TERM_IO: /* Terminate the I/O process */
/* Does this need to be implemented? */
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
case XPT_PATH_INQ: /* Path routing inquiry */
{
struct ccb_pathinq *cpi = &ccb->cpi;
cpi->version_num = 1;
cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
cpi->target_sprt = 0;
cpi->hba_eng_cnt = 0;
if (IS_FC(isp)) {
cpi->hba_misc = PIM_NOBUSRESET;
cpi->max_target = MAX_FC_TARG-1;
cpi->initiator_id =
((fcparam *)isp->isp_param)->isp_loopid;
#ifdef SCCLUN
cpi->max_lun = (1 << 16) - 1;
#else
cpi->max_lun = (1 << 4) - 1;
#endif
/*
* Set base transfer capabilities for Fibre Channel.
* Technically not correct because we don't know
* what media we're running on top of- but we'll
* look good if we always say 100MB/s.
*/
cpi->base_transfer_speed = 100000;
} else {
sdparam *sdp = isp->isp_param;
sdp += cam_sim_bus(xpt_path_sim(cpi->ccb_h.path));
cpi->hba_misc = 0;
cpi->initiator_id = sdp->isp_initiator_id;
cpi->max_target = MAX_TARGETS-1;
if (ISP_FW_REVX(isp->isp_fwrev) >=
ISP_FW_REV(7, 55, 0)) {
#if 0
/*
* Too much breakage.
*/
cpi->max_lun = (1 << 5) - 1;
#else
cpi->max_lun = (1 << 3) - 1;
#endif
} else {
cpi->max_lun = (1 << 3) - 1;
}
cpi->base_transfer_speed = 3300;
}
cpi->bus_id = cam_sim_bus(sim);
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "Qlogic", HBA_IDLEN);
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = cam_sim_unit(sim);
cpi->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
default:
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
}
/***********************************************************
Function Name: Exec_run
Function Description: This function is responsible for
running the main control loop. The control loop is
based on checking both the fast-event bitmask (for high
priority events) and the event FIFO to determine if an
event needs to be handled. The event is then dispatched
to the appropriate handler.
Inputs: none
Outputs: none
***********************************************************/
void Exec_run(void)
{
unsigned char eventGenerated;
while(1)
{
if (fastEventBitmask)
{
/* an event needing fast processing has been received */
/* a received line needs to be processed...this
needs to be processed as quickly as possible */
if (fastEventBitmask & FEV_ACQUIRE_LINE_COMPLETE)
{
DISABLE_INTS();
fastEventBitmask &= ~FEV_ACQUIRE_LINE_COMPLETE;
ENABLE_INTS();
FrameMgr_processLine();
/* also check if serial data needs to be sent
out through UIMgr */
UIMgr_transmitPendingData();
/* we can't just call acquire line again here,
since we don't know if we need to acquire another
line or not (it depends on the FrameMgr to figure
this out) */
}
if (fastEventBitmask & FEV_PROCESS_LINE_COMPLETE)
{
DISABLE_INTS();
fastEventBitmask &= ~FEV_PROCESS_LINE_COMPLETE;
ENABLE_INTS();
FrameMgr_acquireLine();
}
}
if (IS_DATA_IN_EVENT_FIFO() == TRUE)
{
eventGenerated = Exec_readEventFifo();
switch(eventGenerated)
{
case (EV_DUMP_FRAME):
FrameMgr_dispatchEvent(eventGenerated);
break;
case (EV_ENABLE_TRACKING):
FrameMgr_dispatchEvent(eventGenerated);
break;
case (EV_DISABLE_TRACKING):
FrameMgr_dispatchEvent(eventGenerated);
break;
case (EV_ACQUIRE_LINE_COMPLETE):
FrameMgr_dispatchEvent(eventGenerated);
UIMgr_dispatchEvent(eventGenerated);
break;
case (EV_ACQUIRE_FRAME_COMPLETE):
FrameMgr_dispatchEvent(eventGenerated);
break;
case (EV_PROCESS_LINE_COMPLETE):
FrameMgr_dispatchEvent(eventGenerated);
break;
case (EV_PROCESS_FRAME_COMPLETE):
FrameMgr_dispatchEvent(eventGenerated);
break;
case (EV_SERIAL_DATA_RECEIVED):
UIMgr_dispatchEvent(eventGenerated);
FrameMgr_dispatchEvent(eventGenerated);
break;
case (EV_SERIAL_DATA_PENDING_TX):
UIMgr_dispatchEvent(eventGenerated);
break;
default:
break;
}
}
/* toggle the debug line */
}
}