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PDP11, VAX: Add XQ device delay to receive processing for loopback and setup packets

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This commit is contained in:
Mark Pizzolato 2016-04-05 05:21:04 -07:00
parent 35180aabb0
commit 9bfdc1fb42
1 changed files with 35 additions and 14 deletions
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49
PDP11/pdp11_xq.c
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@ -261,6 +261,7 @@ t_stat xq_wr(int32 data, int32 PA, int32 access);
t_stat xq_svc(UNIT * uptr);
t_stat xq_tmrsvc(UNIT * uptr);
t_stat xq_startsvc(UNIT * uptr);
t_stat xq_receivesvc(UNIT * uptr);
t_stat xq_reset (DEVICE * dptr);
t_stat xq_attach (UNIT * uptr, char * cptr);
t_stat xq_detach (UNIT * uptr);
@ -348,6 +349,7 @@ UNIT xqa_unit[] = {
{ UDATA (&xq_svc, UNIT_IDLE|UNIT_ATTABLE, 2047) }, /* receive timer */
{ UDATA (&xq_tmrsvc, UNIT_IDLE|UNIT_DIS, 0) },
{ UDATA (&xq_startsvc, UNIT_DIS, 0) },
{ UDATA (&xq_receivesvc, UNIT_DIS, 0) },
};
BITFIELD xq_csr_bits[] = {
@ -428,6 +430,7 @@ UNIT xqb_unit[] = {
{ UDATA (&xq_svc, UNIT_IDLE|UNIT_ATTABLE, 2047) }, /* receive timer */
{ UDATA (&xq_tmrsvc, UNIT_IDLE|UNIT_DIS, 0) },
{ UDATA (&xq_startsvc, UNIT_DIS, 0) },
{ UDATA (&xq_receivesvc, UNIT_DIS, 0) },
};
REG xqb_reg[] = {
@ -534,7 +537,7 @@ DEBTAB xq_debug[] = {
DEVICE xq_dev = {
"XQ", xqa_unit, xqa_reg, xq_mod,
3, XQ_RDX, 11, 1, XQ_RDX, 16,
4, XQ_RDX, 11, 1, XQ_RDX, 16,
&xq_ex, &xq_dep, &xq_reset,
&xq_boot, &xq_attach, &xq_detach,
&xqa_dib, DEV_DISABLE | DEV_QBUS | DEV_DEBUG | DEV_ETHER,
@ -544,7 +547,7 @@ DEVICE xq_dev = {
DEVICE xqb_dev = {
"XQB", xqb_unit, xqb_reg, xq_mod,
3, XQ_RDX, 11, 1, XQ_RDX, 16,
4, XQ_RDX, 11, 1, XQ_RDX, 16,
&xq_ex, &xq_dep, &xq_reset,
&xq_boot, &xq_attach, &xq_detach,
&xqb_dib, DEV_DISABLE | DEV_DIS | DEV_QBUS | DEV_DEBUG | DEV_ETHER,
@ -1545,6 +1548,8 @@ t_stat xq_process_xbdl(CTLR* xq)
if (xq->var->xbdl_buf[1] & XQ_DSC_S) { /* setup packet */
status = xq_process_setup(xq);
ethq_insert (&xq->var->ReadQ, 0, &xq->var->write_buffer, status);/* put packet in read buffer */
write_success[0] = 0x200C; /* DELQA Setup Packet Transmit Status Word 1 */
write_success[1] = 0x0860; /* DELQA Setup Packet Transmit Status Word 2 */
} else { /* loopback */
if ((DBG_PCK & xq->dev->dctrl) && xq->var->etherface) {
static char *loopback_modes[] = {"xq-write-loopback-Internal", "", "xq-write-loopback-Internal Extended", "xq-write-loopback-External"};
@ -1574,9 +1579,9 @@ t_stat xq_process_xbdl(CTLR* xq)
/* signal transmission complete */
xq_csr_set_clr(xq, XQ_CSR_XI, 0);
/* now trigger "read" of setup or loopback packet */
/* now schedule "reading" of setup or loopback packet */
if (~xq->var->csr & XQ_CSR_RL)
status = xq_process_rbdl(xq);
sim_activate_after_abs(xq->unit+3, 400); /* 400usecs on real hardware */
} else { /* not loopback */
@ -2166,7 +2171,7 @@ void xq_sw_reset(CTLR* xq)
t_stat xq_wr_var(CTLR* xq, int32 data)
{
uint16 save_var = xq->var->var;
sim_debug(DBG_REG, xq->dev, "xq_wr_var(data=0x%08X)\n", data);
sim_debug(DBG_REG, xq->dev, "xq_wr_var(data=0x%04X)\n", data);
switch (xq->var->type) {
case XQ_T_DEQNA:
@ -2277,7 +2282,7 @@ t_stat xq_wr_csr(CTLR* xq, int32 data)
| (data & XQ_CSR_W1) /* write 1 to clear bits */
| ((data & XQ_CSR_XI) ? XQ_CSR_NI : 0); /* clearing XI clears NI */
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%08X)\n", data);
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%04X)\n", data);
/* reset controller when SR transitions to cleared */
if (xq->var->csr & XQ_CSR_SR & ~data) {
@ -2287,7 +2292,7 @@ t_stat xq_wr_csr(CTLR* xq, int32 data)
/* start receiver when RE transitions to set */
if ((~xq->var->csr) & XQ_CSR_RE & data) {
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%08X) - receiver starting soon\n", data);
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%04X) - receiver starting soon\n", data);
/* start the read service timer or enable asynch reading as appropriate */
sim_activate(&xq->unit[2], xq->var->startup_delay);
@ -2295,16 +2300,16 @@ t_stat xq_wr_csr(CTLR* xq, int32 data)
/* stop receiver when RE transitions to clear */
if (xq->var->csr & XQ_CSR_RE & ~data) {
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%08X) - receiver stopped\n", data);
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%04X) - receiver stopped\n", data);
/* stop the read service timer or disable asynch reading as appropriate */
xq_stop_receiver(xq);
}
if (xq->var->csr & XQ_CSR_EL & ~data)
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%08X) - External Loopback %s\n", data, (data & XQ_CSR_EL) ? "enabled" : "disabled");
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%04X) - External Loopback %s\n", data, (data & XQ_CSR_EL) ? "enabled" : "disabled");
if (xq->var->csr & XQ_CSR_IL & ~data)
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%08X) - Internal Loopback %s\n", data, (data & XQ_CSR_IL) ? "disabled" : "enabled");
sim_debug(DBG_REG, xq->dev, "xq_wr_csr(data=0x%04X) - Internal Loopback %s\n", data, (data & XQ_CSR_IL) ? "disabled" : "enabled");
/* update CSR bits */
xq_csr_set_clr (xq, set_bits, clr_bits);
@ -2350,7 +2355,7 @@ t_stat xq_wr_srqr(CTLR* xq, int32 data)
{
uint16 set_bits = data & XQ_SRQR_RW; /* set RW set bits */
sim_debug(DBG_REG, xq->dev, "xq_wr_srqr(data=0x%08X)\n", data);
sim_debug(DBG_REG, xq->dev, "xq_wr_srqr(data=0x%04X)\n", data);
xq->var->srr = set_bits;
@ -2409,7 +2414,7 @@ t_stat xq_wr_srqr(CTLR* xq, int32 data)
t_stat xq_wr_arqr(CTLR* xq, int32 data)
{
sim_debug(DBG_REG, xq->dev, "xq_wr_arqr(data=0x%08X)\n", data);
sim_debug(DBG_REG, xq->dev, "xq_wr_arqr(data=0x%04X)\n", data);
/* initiate transmit activity when requested */
if (XQ_ARQR_TRQ & data) {
@ -2435,7 +2440,7 @@ t_stat xq_wr_icr(CTLR* xq, int32 data)
{
uint16 old_icr = xq->var->icr;
sim_debug(DBG_REG, xq->dev, "xq_wr_icr(data=0x%08X)\n", data);
sim_debug(DBG_REG, xq->dev, "xq_wr_icr(data=0x%04X)\n", data);
xq->var->icr = data & XQ_ICR_ENA;
@ -2451,7 +2456,7 @@ t_stat xq_wr(int32 ldata, int32 PA, int32 access)
int index = (PA >> 1) & 07; /* word index */
uint16 data = (uint16)ldata;
sim_debug(DBG_REG, xq->dev, "xq_wr(data=0x%08X, PA=0x%08X[%s], access=%d)\n", data, PA, ((xq->var->mode == XQ_T_DELQA_PLUS) ? xqt_xmit_regnames[index] : xq_xmit_regnames[index]), access);
sim_debug(DBG_REG, xq->dev, "xq_wr(data=0x%04X, PA=0x%08X[%s], access=%d)\n", data, PA, ((xq->var->mode == XQ_T_DELQA_PLUS) ? xqt_xmit_regnames[index] : xq_xmit_regnames[index]), access);
switch (xq->var->mode) {
case XQ_T_DELQA_PLUS:
@ -2786,6 +2791,22 @@ t_stat xq_startsvc(UNIT* uptr)
return SCPE_OK;
}
/*
** service routine - used to delay receiption of loopback and setup packets by
** 400 useconds like the real hardware
*/
t_stat xq_receivesvc(UNIT* uptr)
{
CTLR* xq = xq_unit2ctlr(uptr);
sim_debug(DBG_TRC, xq->dev, "xq_receivesvc()\n");
/* read setup or loopback packet */
xq_process_rbdl(xq);
return SCPE_OK;
}
/* attach device: */
t_stat xq_attach(UNIT* uptr, char* cptr)
{