2 ** -----------------------------------------------------------------------------
4 ** Perle Specialix driver for Linux
5 ** ported from the existing SCO driver source
8 * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 ** Last Modified : 11/6/98 10:33:41
27 ** Retrieved : 11/6/98 10:33:49
29 ** ident @(#)riocmd.c 1.2
31 ** -----------------------------------------------------------------------------
34 static char *_riocmd_c_sccs_ = "@(#)riocmd.c 1.2";
37 #include <linux/module.h>
38 #include <linux/slab.h>
39 #include <linux/errno.h>
40 #include <linux/tty.h>
42 #include <asm/system.h>
43 #include <asm/string.h>
44 #include <asm/semaphore.h>
46 #include <linux/termios.h>
47 #include <linux/serial.h>
49 #include <linux/generic_serial.h>
51 #include "linux_compat.h"
52 #include "rio_linux.h"
83 static struct IdentifyRta IdRta;
84 static struct KillNeighbour KillUnit;
86 int RIOFoadRta(struct Host *HostP, struct Map *MapP)
88 struct CmdBlk *CmdBlkP;
90 rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA\n");
92 CmdBlkP = RIOGetCmdBlk();
95 rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: GetCmdBlk failed\n");
99 CmdBlkP->Packet.dest_unit = MapP->ID;
100 CmdBlkP->Packet.dest_port = BOOT_RUP;
101 CmdBlkP->Packet.src_unit = 0;
102 CmdBlkP->Packet.src_port = BOOT_RUP;
103 CmdBlkP->Packet.len = 0x84;
104 CmdBlkP->Packet.data[0] = IFOAD;
105 CmdBlkP->Packet.data[1] = 0;
106 CmdBlkP->Packet.data[2] = IFOAD_MAGIC & 0xFF;
107 CmdBlkP->Packet.data[3] = (IFOAD_MAGIC >> 8) & 0xFF;
109 if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) {
110 rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: Failed to queue foad command\n");
116 int RIOZombieRta(struct Host *HostP, struct Map *MapP)
118 struct CmdBlk *CmdBlkP;
120 rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA\n");
122 CmdBlkP = RIOGetCmdBlk();
125 rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: GetCmdBlk failed\n");
129 CmdBlkP->Packet.dest_unit = MapP->ID;
130 CmdBlkP->Packet.dest_port = BOOT_RUP;
131 CmdBlkP->Packet.src_unit = 0;
132 CmdBlkP->Packet.src_port = BOOT_RUP;
133 CmdBlkP->Packet.len = 0x84;
134 CmdBlkP->Packet.data[0] = ZOMBIE;
135 CmdBlkP->Packet.data[1] = 0;
136 CmdBlkP->Packet.data[2] = ZOMBIE_MAGIC & 0xFF;
137 CmdBlkP->Packet.data[3] = (ZOMBIE_MAGIC >> 8) & 0xFF;
139 if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) {
140 rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: Failed to queue zombie command\n");
146 int RIOCommandRta(struct rio_info *p, uint RtaUnique, int (*func) (struct Host * HostP, struct Map * MapP))
150 rio_dprintk(RIO_DEBUG_CMD, "Command RTA 0x%x func 0x%x\n", RtaUnique, (int) func);
155 for (Host = 0; Host < p->RIONumHosts; Host++) {
157 struct Host *HostP = &p->RIOHosts[Host];
159 for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) {
160 struct Map *MapP = &HostP->Mapping[Rta];
162 if (MapP->RtaUniqueNum == RtaUnique) {
166 ** now, lets just check we have a route to it...
167 ** IF the routing stuff is working, then one of the
168 ** topology entries for this unit will have a legit
169 ** route *somewhere*. We care not where - if its got
170 ** any connections, we can get to it.
172 for (Link = 0; Link < LINKS_PER_UNIT; Link++) {
173 if (MapP->Topology[Link].Unit <= (uchar) MAX_RUP) {
175 ** Its worth trying the operation...
177 return (*func) (HostP, MapP);
187 int RIOIdentifyRta(struct rio_info *p, caddr_t arg)
191 if (copyin((int) arg, (caddr_t) & IdRta, sizeof(IdRta)) == COPYFAIL) {
192 rio_dprintk(RIO_DEBUG_CMD, "RIO_IDENTIFY_RTA copy failed\n");
193 p->RIOError.Error = COPYIN_FAILED;
197 for (Host = 0; Host < p->RIONumHosts; Host++) {
199 struct Host *HostP = &p->RIOHosts[Host];
201 for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) {
202 struct Map *MapP = &HostP->Mapping[Rta];
204 if (MapP->RtaUniqueNum == IdRta.RtaUnique) {
207 ** now, lets just check we have a route to it...
208 ** IF the routing stuff is working, then one of the
209 ** topology entries for this unit will have a legit
210 ** route *somewhere*. We care not where - if its got
211 ** any connections, we can get to it.
213 for (Link = 0; Link < LINKS_PER_UNIT; Link++) {
214 if (MapP->Topology[Link].Unit <= (uchar) MAX_RUP) {
216 ** Its worth trying the operation...
218 struct CmdBlk *CmdBlkP;
220 rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA\n");
222 CmdBlkP = RIOGetCmdBlk();
225 rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: GetCmdBlk failed\n");
229 CmdBlkP->Packet.dest_unit = MapP->ID;
230 CmdBlkP->Packet.dest_port = BOOT_RUP;
231 CmdBlkP->Packet.src_unit = 0;
232 CmdBlkP->Packet.src_port = BOOT_RUP;
233 CmdBlkP->Packet.len = 0x84;
234 CmdBlkP->Packet.data[0] = IDENTIFY;
235 CmdBlkP->Packet.data[1] = 0;
236 CmdBlkP->Packet.data[2] = IdRta.ID;
238 if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) {
239 rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: Failed to queue command\n");
252 int RIOKillNeighbour(struct rio_info *p, caddr_t arg)
257 struct CmdBlk *CmdBlkP;
259 rio_dprintk(RIO_DEBUG_CMD, "KILL HOST NEIGHBOUR\n");
261 if (copyin((int) arg, (caddr_t) & KillUnit, sizeof(KillUnit)) == COPYFAIL) {
262 rio_dprintk(RIO_DEBUG_CMD, "RIO_KILL_NEIGHBOUR copy failed\n");
263 p->RIOError.Error = COPYIN_FAILED;
267 if (KillUnit.Link > 3)
270 CmdBlkP = RIOGetCmdBlk();
273 rio_dprintk(RIO_DEBUG_CMD, "UFOAD: GetCmdBlk failed\n");
277 CmdBlkP->Packet.dest_unit = 0;
278 CmdBlkP->Packet.src_unit = 0;
279 CmdBlkP->Packet.dest_port = BOOT_RUP;
280 CmdBlkP->Packet.src_port = BOOT_RUP;
281 CmdBlkP->Packet.len = 0x84;
282 CmdBlkP->Packet.data[0] = UFOAD;
283 CmdBlkP->Packet.data[1] = KillUnit.Link;
284 CmdBlkP->Packet.data[2] = UFOAD_MAGIC & 0xFF;
285 CmdBlkP->Packet.data[3] = (UFOAD_MAGIC >> 8) & 0xFF;
287 for (Host = 0; Host < p->RIONumHosts; Host++) {
289 HostP = &p->RIOHosts[Host];
291 if (HostP->UniqueNum == KillUnit.UniqueNum) {
292 if (RIOQueueCmdBlk(HostP, RTAS_PER_HOST + KillUnit.Link, CmdBlkP) == RIO_FAIL) {
293 rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n");
299 for (ID = 0; ID < RTAS_PER_HOST; ID++) {
300 if (HostP->Mapping[ID].RtaUniqueNum == KillUnit.UniqueNum) {
301 CmdBlkP->Packet.dest_unit = ID + 1;
302 if (RIOQueueCmdBlk(HostP, ID, CmdBlkP) == RIO_FAIL) {
303 rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n");
310 RIOFreeCmdBlk(CmdBlkP);
314 int RIOSuspendBootRta(struct Host *HostP, int ID, int Link)
316 struct CmdBlk *CmdBlkP;
318 rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA ID %d, link %c\n", ID, 'A' + Link);
320 CmdBlkP = RIOGetCmdBlk();
323 rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: GetCmdBlk failed\n");
327 CmdBlkP->Packet.dest_unit = ID;
328 CmdBlkP->Packet.dest_port = BOOT_RUP;
329 CmdBlkP->Packet.src_unit = 0;
330 CmdBlkP->Packet.src_port = BOOT_RUP;
331 CmdBlkP->Packet.len = 0x84;
332 CmdBlkP->Packet.data[0] = IWAIT;
333 CmdBlkP->Packet.data[1] = Link;
334 CmdBlkP->Packet.data[2] = IWAIT_MAGIC & 0xFF;
335 CmdBlkP->Packet.data[3] = (IWAIT_MAGIC >> 8) & 0xFF;
337 if (RIOQueueCmdBlk(HostP, ID - 1, CmdBlkP) == RIO_FAIL) {
338 rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: Failed to queue iwait command\n");
344 int RIOFoadWakeup(struct rio_info *p)
347 register struct Port *PortP;
350 for (port = 0; port < RIO_PORTS; port++) {
351 PortP = p->RIOPortp[port];
353 rio_spin_lock_irqsave(&PortP->portSem, flags);
356 PortP->InUse = NOT_INUSE;
357 PortP->PortState = 0;
358 PortP->FlushCmdBodge = 0;
359 PortP->ModemLines = 0;
360 PortP->ModemState = 0;
364 PortP->WflushFlag = 0;
365 PortP->MagicFlags = 0;
366 PortP->RxDataStart = 0;
367 PortP->TxBufferIn = 0;
368 PortP->TxBufferOut = 0;
369 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
375 ** Incoming command on the COMMAND_RUP to be processed.
377 static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, PKT * PacketP)
379 struct PktCmd *PktCmdP = (struct PktCmd *) PacketP->data;
381 struct UnixRup *UnixRupP;
383 ushort ReportedModemStatus;
393 CheckPacketP(PacketP);
398 ** Command rup packets coming from the RTA will have pkt->data[1] (which
399 ** translates to PktCmdP->PhbNum) set to the host port number for the
400 ** particular unit. To access the correct BaseSysPort for a 16 port RTA,
401 ** we can use PhbNum to get the rup number for the appropriate 8 port
402 ** block (for the first block, this should be equal to 'Rup').
404 rup = RBYTE(PktCmdP->PhbNum) / (ushort) PORTS_PER_RTA;
405 UnixRupP = &HostP->UnixRups[rup];
406 SysPort = UnixRupP->BaseSysPort + (RBYTE(PktCmdP->PhbNum) % (ushort) PORTS_PER_RTA);
407 rio_dprintk(RIO_DEBUG_CMD, "Command on rup %d, port %d\n", rup, SysPort);
411 CheckUnixRupP(UnixRupP);
413 if (UnixRupP->BaseSysPort == NO_PORT) {
414 rio_dprintk(RIO_DEBUG_CMD, "OBSCURE ERROR!\n");
415 rio_dprintk(RIO_DEBUG_CMD, "Diagnostics follow. Please WRITE THESE DOWN and report them to Specialix Technical Support\n");
416 rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Host number %d, name ``%s''\n", HostP - p->RIOHosts, HostP->Name);
417 rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Rup number 0x%x\n", rup);
419 if (Rup >= (ushort) MAX_RUP) {
420 rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for RTA ``%s''\n", HostP->Mapping[Rup].Name);
422 rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for link ``%c'' of host ``%s''\n", ('A' + Rup - MAX_RUP), HostP->Name);
424 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Destination 0x%x:0x%x\n", PacketP->dest_unit, PacketP->dest_port);
425 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Source 0x%x:0x%x\n", PacketP->src_unit, PacketP->src_port);
426 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Length 0x%x (%d)\n", PacketP->len, PacketP->len);
427 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Control 0x%x (%d)\n", PacketP->control, PacketP->control);
428 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Check 0x%x (%d)\n", PacketP->csum, PacketP->csum);
429 rio_dprintk(RIO_DEBUG_CMD, "COMMAND information: Host Port Number 0x%x, " "Command Code 0x%x\n", PktCmdP->PhbNum, PktCmdP->Command);
433 CheckSysPort(SysPort);
435 PortP = p->RIOPortp[SysPort];
436 rio_spin_lock_irqsave(&PortP->portSem, flags);
437 switch (RBYTE(PktCmdP->Command)) {
439 rio_dprintk(RIO_DEBUG_CMD, "Received a break!\n");
440 /* If the current line disc. is not multi-threading and
441 the current processor is not the default, reset rup_intr
442 and return FALSE to ensure that the command packet is
444 /* Call tmgr HANGUP HERE */
445 /* Fix this later when every thing works !!!! RAMRAJ */
446 gs_got_break(&PortP->gs);
450 rio_dprintk(RIO_DEBUG_CMD, "Command complete on phb %d host %d\n", RBYTE(PktCmdP->PhbNum), HostP - p->RIOHosts);
452 switch (RBYTE(PktCmdP->SubCommand)) {
454 rio_dprintk(RIO_DEBUG_CMD, "Memory dump cmd (0x%x) from addr 0x%x\n", RBYTE(PktCmdP->SubCommand), RWORD(PktCmdP->SubAddr));
457 rio_dprintk(RIO_DEBUG_CMD, "Read register (0x%x)\n", RWORD(PktCmdP->SubAddr));
458 p->CdRegister = (RBYTE(PktCmdP->ModemStatus) & MSVR1_HOST);
466 rio_dprintk(RIO_DEBUG_CMD, "New status is 0x%x was 0x%x\n", RBYTE(PktCmdP->PortStatus), PortP->PortState);
467 if (PortP->PortState != RBYTE(PktCmdP->PortStatus)) {
468 rio_dprintk(RIO_DEBUG_CMD, "Mark status & wakeup\n");
469 PortP->PortState = RBYTE(PktCmdP->PortStatus);
470 /* What should we do here ...
471 wakeup( &PortP->PortState );
474 rio_dprintk(RIO_DEBUG_CMD, "No change\n");
479 ** Knock out the tbusy and tstop bits, as these are not relevant
480 ** to the check for modem status change (they're just there because
481 ** it's a convenient place to put them!).
483 ReportedModemStatus = RBYTE(PktCmdP->ModemStatus);
484 if ((PortP->ModemState & MSVR1_HOST) == (ReportedModemStatus & MSVR1_HOST)) {
485 rio_dprintk(RIO_DEBUG_CMD, "Modem status unchanged 0x%x\n", PortP->ModemState);
487 ** Update ModemState just in case tbusy or tstop states have
490 PortP->ModemState = ReportedModemStatus;
492 rio_dprintk(RIO_DEBUG_CMD, "Modem status change from 0x%x to 0x%x\n", PortP->ModemState, ReportedModemStatus);
493 PortP->ModemState = ReportedModemStatus;
496 /***********************************************************\
497 *************************************************************
499 *** M O D E M S T A T E C H A N G E ***
501 *************************************************************
502 \***********************************************************/
504 ** If the device is a modem, then check the modem
507 if (PortP->gs.tty == NULL)
509 if (PortP->gs.tty->termios == NULL)
512 if (!(PortP->gs.tty->termios->c_cflag & CLOCAL) && ((PortP->State & (RIO_MOPEN | RIO_WOPEN)))) {
514 rio_dprintk(RIO_DEBUG_CMD, "Is there a Carrier?\n");
516 ** Is there a carrier?
518 if (PortP->ModemState & MSVR1_CD) {
520 ** Has carrier just appeared?
522 if (!(PortP->State & RIO_CARR_ON)) {
523 rio_dprintk(RIO_DEBUG_CMD, "Carrier just came up.\n");
524 PortP->State |= RIO_CARR_ON;
526 ** wakeup anyone in WOPEN
528 if (PortP->State & (PORT_ISOPEN | RIO_WOPEN))
529 wake_up_interruptible(&PortP->gs.open_wait);
531 PortP->Stat.ModemOnCnt++;
536 ** Has carrier just dropped?
538 if (PortP->State & RIO_CARR_ON) {
539 if (PortP->State & (PORT_ISOPEN | RIO_WOPEN | RIO_MOPEN))
540 tty_hangup(PortP->gs.tty);
541 PortP->State &= ~RIO_CARR_ON;
542 rio_dprintk(RIO_DEBUG_CMD, "Carrirer just went down\n");
544 PortP->Stat.ModemOffCnt++;
555 rio_dprintk(RIO_DEBUG_CMD, "Unknown command %d on CMD_RUP of host %d\n", RBYTE(PktCmdP->Command), HostP - p->RIOHosts);
558 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
566 ** The command mechanism:
567 ** Each rup has a chain of commands associated with it.
568 ** This chain is maintained by routines in this file.
569 ** Periodically we are called and we run a quick check of all the
570 ** active chains to determine if there is a command to be executed,
571 ** and if the rup is ready to accept it.
576 ** Allocate an empty command block.
578 struct CmdBlk *RIOGetCmdBlk(void)
580 struct CmdBlk *CmdBlkP;
582 CmdBlkP = (struct CmdBlk *) sysbrk(sizeof(struct CmdBlk));
584 bzero(CmdBlkP, sizeof(struct CmdBlk));
590 ** Return a block to the head of the free list.
592 void RIOFreeCmdBlk(struct CmdBlk *CmdBlkP)
594 sysfree((void *) CmdBlkP, sizeof(struct CmdBlk));
598 ** attach a command block to the list of commands to be performed for
601 int RIOQueueCmdBlk(struct Host *HostP, uint Rup, struct CmdBlk *CmdBlkP)
603 struct CmdBlk **Base;
604 struct UnixRup *UnixRupP;
610 CheckCmdBlkP(CmdBlkP);
612 if (Rup >= (ushort) (MAX_RUP + LINKS_PER_UNIT)) {
613 rio_dprintk(RIO_DEBUG_CMD, "Illegal rup number %d in RIOQueueCmdBlk\n", Rup);
614 RIOFreeCmdBlk(CmdBlkP);
618 UnixRupP = &HostP->UnixRups[Rup];
620 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
623 ** If the RUP is currently inactive, then put the request
624 ** straight on the RUP....
626 if ((UnixRupP->CmdsWaitingP == NULL) && (UnixRupP->CmdPendingP == NULL) && (RWORD(UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE) && (CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP)
628 rio_dprintk(RIO_DEBUG_CMD, "RUP inactive-placing command straight on. Cmd byte is 0x%x\n", CmdBlkP->Packet.data[0]);
631 ** Whammy! blat that pack!
633 HostP->Copy((caddr_t) & CmdBlkP->Packet, RIO_PTR(HostP->Caddr, UnixRupP->RupP->txpkt), sizeof(PKT));
636 ** place command packet on the pending position.
638 UnixRupP->CmdPendingP = CmdBlkP;
641 ** set the command register
643 WWORD(UnixRupP->RupP->txcontrol, TX_PACKET_READY);
645 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
649 rio_dprintk(RIO_DEBUG_CMD, "RUP active - en-queing\n");
651 if (UnixRupP->CmdsWaitingP != NULL)
652 rio_dprintk(RIO_DEBUG_CMD, "Rup active - command waiting\n");
653 if (UnixRupP->CmdPendingP != NULL)
654 rio_dprintk(RIO_DEBUG_CMD, "Rup active - command pending\n");
655 if (RWORD(UnixRupP->RupP->txcontrol) != TX_RUP_INACTIVE)
656 rio_dprintk(RIO_DEBUG_CMD, "Rup active - command rup not ready\n");
658 Base = &UnixRupP->CmdsWaitingP;
660 rio_dprintk(RIO_DEBUG_CMD, "First try to queue cmdblk 0x%x at 0x%x\n", (int) CmdBlkP, (int) Base);
663 rio_dprintk(RIO_DEBUG_CMD, "Command cmdblk 0x%x here\n", (int) (*Base));
664 Base = &((*Base)->NextP);
665 rio_dprintk(RIO_DEBUG_CMD, "Now try to queue cmd cmdblk 0x%x at 0x%x\n", (int) CmdBlkP, (int) Base);
668 rio_dprintk(RIO_DEBUG_CMD, "Will queue cmdblk 0x%x at 0x%x\n", (int) CmdBlkP, (int) Base);
672 CmdBlkP->NextP = NULL;
674 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
680 ** Here we go - if there is an empty rup, fill it!
681 ** must be called at splrio() or higher.
683 void RIOPollHostCommands(struct rio_info *p, struct Host *HostP)
685 register struct CmdBlk *CmdBlkP;
686 register struct UnixRup *UnixRupP;
692 Rup = MAX_RUP + LINKS_PER_UNIT;
694 do { /* do this loop for each RUP */
696 ** locate the rup we are processing & lock it
698 UnixRupP = &HostP->UnixRups[--Rup];
700 spin_lock_irqsave(&UnixRupP->RupLock, flags);
703 ** First check for incoming commands:
705 if (RWORD(UnixRupP->RupP->rxcontrol) != RX_RUP_INACTIVE) {
708 PacketP = (PKT *) RIO_PTR(HostP->Caddr, RWORD(UnixRupP->RupP->rxpkt));
710 ShowPacket(DBG_CMD, PacketP);
712 switch (RBYTE(PacketP->dest_port)) {
714 rio_dprintk(RIO_DEBUG_CMD, "Incoming Boot %s packet '%x'\n", RBYTE(PacketP->len) & 0x80 ? "Command" : "Data", RBYTE(PacketP->data[0]));
715 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
716 FreeMe = RIOBootRup(p, Rup, HostP, PacketP);
717 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
722 ** Free the RUP lock as loss of carrier causes a
723 ** ttyflush which will (eventually) call another
724 ** routine that uses the RUP lock.
726 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
727 FreeMe = RIOCommandRup(p, Rup, HostP, PacketP);
728 if (PacketP->data[5] == MEMDUMP) {
729 rio_dprintk(RIO_DEBUG_CMD, "Memdump from 0x%x complete\n", *(ushort *) & (PacketP->data[6]));
730 HostP->Copy((caddr_t) & (PacketP->data[8]), (caddr_t) p->RIOMemDump, 32);
732 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
736 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
737 FreeMe = RIORouteRup(p, Rup, HostP, PacketP);
738 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
742 rio_dprintk(RIO_DEBUG_CMD, "Unknown RUP %d\n", RBYTE(PacketP->dest_port));
748 rio_dprintk(RIO_DEBUG_CMD, "Free processed incoming command packet\n");
749 put_free_end(HostP, PacketP);
751 WWORD(UnixRupP->RupP->rxcontrol, RX_RUP_INACTIVE);
753 if (RWORD(UnixRupP->RupP->handshake) == PHB_HANDSHAKE_SET) {
754 rio_dprintk(RIO_DEBUG_CMD, "Handshake rup %d\n", Rup);
755 WWORD(UnixRupP->RupP->handshake, PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET);
761 ** IF a command was running on the port,
762 ** and it has completed, then tidy it up.
764 if ((CmdBlkP = UnixRupP->CmdPendingP) && /* ASSIGN! */
765 (RWORD(UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) {
768 ** there is a command in pending.
769 ** Therefore, this command has finished.
770 ** So, wakeup whoever is waiting for it (and tell them
773 if (CmdBlkP->Packet.dest_port == BOOT_RUP)
774 rio_dprintk(RIO_DEBUG_CMD, "Free Boot %s Command Block '%x'\n", CmdBlkP->Packet.len & 0x80 ? "Command" : "Data", CmdBlkP->Packet.data[0]);
776 rio_dprintk(RIO_DEBUG_CMD, "Command 0x%x completed\n", (int) CmdBlkP);
779 ** Clear the Rup lock to prevent mutual exclusion.
781 if (CmdBlkP->PostFuncP) {
782 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
783 (*CmdBlkP->PostFuncP) (CmdBlkP->PostArg, CmdBlkP);
784 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
788 ** ....clear the pending flag....
790 UnixRupP->CmdPendingP = NULL;
793 ** ....and return the command block to the freelist.
795 RIOFreeCmdBlk(CmdBlkP);
799 ** If there is a command for this rup, and the rup
800 ** is idle, then process the command
802 if ((CmdBlkP = UnixRupP->CmdsWaitingP) && /* ASSIGN! */
803 (UnixRupP->CmdPendingP == NULL) && (RWORD(UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) {
805 ** if the pre-function is non-zero, call it.
806 ** If it returns RIO_FAIL then don't
807 ** send this command yet!
810 CheckCmdBlkP(CmdBlkP);
812 if (!(CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) : TRUE)) {
813 rio_dprintk(RIO_DEBUG_CMD, "Not ready to start command 0x%x\n", (int) CmdBlkP);
815 rio_dprintk(RIO_DEBUG_CMD, "Start new command 0x%x Cmd byte is 0x%x\n", (int) CmdBlkP, CmdBlkP->Packet.data[0]);
817 ** Whammy! blat that pack!
820 CheckPacketP((PKT *) RIO_PTR(HostP->Caddr, UnixRupP->RupP->txpkt));
822 HostP->Copy((caddr_t) & CmdBlkP->Packet, RIO_PTR(HostP->Caddr, UnixRupP->RupP->txpkt), sizeof(PKT));
825 ** remove the command from the rup command queue...
827 UnixRupP->CmdsWaitingP = CmdBlkP->NextP;
830 ** ...and place it on the pending position.
832 UnixRupP->CmdPendingP = CmdBlkP;
835 ** set the command register
837 WWORD(UnixRupP->RupP->txcontrol, TX_PACKET_READY);
840 ** the command block will be freed
841 ** when the command has been processed.
845 spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
849 int RIOWFlushMark(int iPortP, struct CmdBlk *CmdBlkP)
851 struct Port *PortP = (struct Port *) iPortP;
854 rio_spin_lock_irqsave(&PortP->portSem, flags);
859 PortP->MagicFlags |= MAGIC_FLUSH;
860 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
861 return RIOUnUse(iPortP, CmdBlkP);
864 int RIORFlushEnable(int iPortP, struct CmdBlk *CmdBlkP)
866 struct Port *PortP = (struct Port *) iPortP;
870 rio_spin_lock_irqsave(&PortP->portSem, flags);
872 while (can_remove_receive(&PacketP, PortP)) {
873 remove_receive(PortP);
874 ShowPacket(DBG_PROC, PacketP);
875 put_free_end(PortP->HostP, PacketP);
878 if (RWORD(PortP->PhbP->handshake) == PHB_HANDSHAKE_SET) {
880 ** MAGIC! (Basically, handshake the RX buffer, so that
881 ** the RTAs upstream can be re-enabled.)
883 rio_dprintk(RIO_DEBUG_CMD, "Util: Set RX handshake bit\n");
884 WWORD(PortP->PhbP->handshake, PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET);
886 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
887 return RIOUnUse(iPortP, CmdBlkP);
890 int RIOUnUse(int iPortP, struct CmdBlk *CmdBlkP)
892 struct Port *PortP = (struct Port *) iPortP;
895 rio_spin_lock_irqsave(&PortP->portSem, flags);
900 rio_dprintk(RIO_DEBUG_CMD, "Decrement in use count for port\n");
903 if (--PortP->InUse != NOT_INUSE) {
904 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
909 ** While PortP->InUse is set (i.e. a preemptive command has been sent to
910 ** the RTA and is awaiting completion), any transmit data is prevented from
911 ** being transferred from the write queue into the transmit packets
912 ** (add_transmit) and no furthur transmit interrupt will be sent for that
913 ** data. The next interrupt will occur up to 500ms later (RIOIntr is called
914 ** twice a second as a saftey measure). This was the case when kermit was
915 ** used to send data into a RIO port. After each packet was sent, TCFLSH
916 ** was called to flush the read queue preemptively. PortP->InUse was
917 ** incremented, thereby blocking the 6 byte acknowledgement packet
918 ** transmitted back. This acknowledgment hung around for 500ms before
919 ** being sent, thus reducing input performance substantially!.
920 ** When PortP->InUse becomes NOT_INUSE, we must ensure that any data
921 ** hanging around in the transmit buffer is sent immediately.
923 WWORD(PortP->HostP->ParmMapP->tx_intr, 1);
924 /* What to do here ..
925 wakeup( (caddr_t)&(PortP->InUse) );
927 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
931 void ShowPacket(uint Flags, struct PKT *PacketP)
937 ** How to use this file:
939 ** To send a command down a rup, you need to allocate a command block, fill
940 ** in the packet information, fill in the command number, fill in the pre-
941 ** and post- functions and arguments, and then add the command block to the
942 ** queue of command blocks for the port in question. When the port is idle,
943 ** then the pre-function will be called. If this returns RIO_FAIL then the
944 ** command will be re-queued and tried again at a later date (probably in one
945 ** clock tick). If the pre-function returns NOT RIO_FAIL, then the command
946 ** packet will be queued on the RUP, and the txcontrol field set to the
947 ** command number. When the txcontrol field has changed from being the
948 ** command number, then the post-function will be called, with the argument
949 ** specified earlier, a pointer to the command block, and the value of
952 ** To allocate a command block, call RIOGetCmdBlk(). This returns a pointer
953 ** to the command block structure allocated, or NULL if there aren't any.
954 ** The block will have been zeroed for you.
956 ** The structure has the following fields:
960 ** struct CmdBlk *NextP; ** Pointer to next command block **
961 ** struct PKT Packet; ** A packet, to copy to the rup **
962 ** int (*PreFuncP)(); ** The func to call to check if OK **
963 ** int PreArg; ** The arg for the func **
964 ** int (*PostFuncP)(); ** The func to call when completed **
965 ** int PostArg; ** The arg for the func **
968 ** You need to fill in ALL fields EXCEPT NextP, which is used to link the
969 ** blocks together either on the free list or on the Rup list.
971 ** Packet is an actual packet structure to be filled in with the packet
972 ** information associated with the command. You need to fill in everything,
973 ** as the command processore doesn't process the command packet in any way.
975 ** The PreFuncP is called before the packet is enqueued on the host rup.
976 ** PreFuncP is called as (*PreFuncP)(PreArg, CmdBlkP);. PreFuncP must
977 ** return !RIO_FAIL to have the packet queued on the rup, and RIO_FAIL
978 ** if the packet is NOT to be queued.
980 ** The PostFuncP is called when the command has completed. It is called
981 ** as (*PostFuncP)(PostArg, CmdBlkP, txcontrol);. PostFuncP is not expected
982 ** to return a value. PostFuncP does NOT need to free the command block,
983 ** as this happens automatically after PostFuncP returns.
985 ** Once the command block has been filled in, it is attached to the correct
986 ** queue by calling RIOQueueCmdBlk( HostP, Rup, CmdBlkP ) where HostP is
987 ** a pointer to the struct Host, Rup is the NUMBER of the rup (NOT a pointer
988 ** to it!), and CmdBlkP is the pointer to the command block allocated using