ia64/linux-2.6.18-xen.hg

view drivers/char/rio/riotable.c @ 0:831230e53067

Import 2.6.18 from kernel.org tarball.
author Ian Campbell <ian.campbell@xensource.com>
date Wed Apr 11 14:15:44 2007 +0100 (2007-04-11)
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1 /*
2 ** -----------------------------------------------------------------------------
3 **
4 ** Perle Specialix driver for Linux
5 ** Ported from existing RIO Driver for SCO sources.
6 *
7 * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 **
23 ** Module : riotable.c
24 ** SID : 1.2
25 ** Last Modified : 11/6/98 10:33:47
26 ** Retrieved : 11/6/98 10:33:50
27 **
28 ** ident @(#)riotable.c 1.2
29 **
30 ** -----------------------------------------------------------------------------
31 */
32 #ifdef SCCS_LABELS
33 static char *_riotable_c_sccs_ = "@(#)riotable.c 1.2";
34 #endif
36 #include <linux/module.h>
37 #include <linux/slab.h>
38 #include <linux/errno.h>
39 #include <linux/interrupt.h>
40 #include <linux/string.h>
42 #include <asm/io.h>
43 #include <asm/system.h>
44 #include <asm/string.h>
45 #include <asm/semaphore.h>
46 #include <asm/uaccess.h>
48 #include <linux/termios.h>
49 #include <linux/serial.h>
51 #include <linux/generic_serial.h>
54 #include "linux_compat.h"
55 #include "rio_linux.h"
56 #include "pkt.h"
57 #include "daemon.h"
58 #include "rio.h"
59 #include "riospace.h"
60 #include "cmdpkt.h"
61 #include "map.h"
62 #include "rup.h"
63 #include "port.h"
64 #include "riodrvr.h"
65 #include "rioinfo.h"
66 #include "func.h"
67 #include "errors.h"
68 #include "pci.h"
70 #include "parmmap.h"
71 #include "unixrup.h"
72 #include "board.h"
73 #include "host.h"
74 #include "phb.h"
75 #include "link.h"
76 #include "cmdblk.h"
77 #include "route.h"
78 #include "cirrus.h"
79 #include "rioioctl.h"
80 #include "param.h"
81 #include "protsts.h"
83 /*
84 ** A configuration table has been loaded. It is now up to us
85 ** to sort it out and use the information contained therein.
86 */
87 int RIONewTable(struct rio_info *p)
88 {
89 int Host, Host1, Host2, NameIsUnique, Entry, SubEnt;
90 struct Map *MapP;
91 struct Map *HostMapP;
92 struct Host *HostP;
94 char *cptr;
96 /*
97 ** We have been sent a new table to install. We need to break
98 ** it down into little bits and spread it around a bit to see
99 ** what we have got.
100 */
101 /*
102 ** Things to check:
103 ** (things marked 'xx' aren't checked any more!)
104 ** (1) That there are no booted Hosts/RTAs out there.
105 ** (2) That the names are properly formed
106 ** (3) That blank entries really are.
107 ** xx (4) That hosts mentioned in the table actually exist. xx
108 ** (5) That the IDs are unique (per host).
109 ** (6) That host IDs are zero
110 ** (7) That port numbers are valid
111 ** (8) That port numbers aren't duplicated
112 ** (9) That names aren't duplicated
113 ** xx (10) That hosts that actually exist are mentioned in the table. xx
114 */
115 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n");
116 if (p->RIOSystemUp) { /* (1) */
117 p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED;
118 return -EBUSY;
119 }
121 p->RIOError.Error = NOTHING_WRONG_AT_ALL;
122 p->RIOError.Entry = -1;
123 p->RIOError.Other = -1;
125 for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
126 MapP = &p->RIOConnectTable[Entry];
127 if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) {
128 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n");
129 cptr = MapP->Name; /* (2) */
130 cptr[MAX_NAME_LEN - 1] = '\0';
131 if (cptr[0] == '\0') {
132 memcpy(MapP->Name, MapP->RtaUniqueNum ? "RTA NN" : "HOST NN", 8);
133 MapP->Name[5] = '0' + Entry / 10;
134 MapP->Name[6] = '0' + Entry % 10;
135 }
136 while (*cptr) {
137 if (*cptr < ' ' || *cptr > '~') {
138 p->RIOError.Error = BAD_CHARACTER_IN_NAME;
139 p->RIOError.Entry = Entry;
140 return -ENXIO;
141 }
142 cptr++;
143 }
144 }
146 /*
147 ** If the entry saved was a tentative entry then just forget
148 ** about it.
149 */
150 if (MapP->Flags & SLOT_TENTATIVE) {
151 MapP->HostUniqueNum = 0;
152 MapP->RtaUniqueNum = 0;
153 continue;
154 }
156 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n");
157 if (!MapP->RtaUniqueNum && !MapP->HostUniqueNum) { /* (3) */
158 if (MapP->ID || MapP->SysPort || MapP->Flags) {
159 rio_dprintk(RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n", MapP->Name);
160 p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL;
161 p->RIOError.Entry = Entry;
162 return -ENXIO;
163 }
164 rio_dprintk(RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n");
165 continue;
166 }
168 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n");
169 for (Host = 0; Host < p->RIONumHosts; Host++) { /* (4) */
170 if (p->RIOHosts[Host].UniqueNum == MapP->HostUniqueNum) {
171 HostP = &p->RIOHosts[Host];
172 /*
173 ** having done the lookup, we don't really want to do
174 ** it again, so hang the host number in a safe place
175 */
176 MapP->Topology[0].Unit = Host;
177 break;
178 }
179 }
181 if (Host >= p->RIONumHosts) {
182 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n", MapP->Name, MapP->HostUniqueNum);
183 MapP->HostUniqueNum = 0;
184 /* MapP->RtaUniqueNum = 0; */
185 /* MapP->ID = 0; */
186 /* MapP->Flags = 0; */
187 /* MapP->SysPort = 0; */
188 /* MapP->Name[0] = 0; */
189 continue;
190 }
192 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n");
193 if (MapP->RtaUniqueNum) { /* (5) */
194 if (!MapP->ID) {
195 rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n", MapP->Name);
196 p->RIOError.Error = ZERO_RTA_ID;
197 p->RIOError.Entry = Entry;
198 return -ENXIO;
199 }
200 if (MapP->ID > MAX_RUP) {
201 rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n", MapP->Name, MapP->ID);
202 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
203 p->RIOError.Entry = Entry;
204 return -ENXIO;
205 }
206 for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
207 if (MapP->HostUniqueNum == p->RIOConnectTable[SubEnt].HostUniqueNum && MapP->ID == p->RIOConnectTable[SubEnt].ID) {
208 rio_dprintk(RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n", MapP->Name, p->RIOConnectTable[SubEnt].Name);
209 p->RIOError.Error = DUPLICATED_RTA_ID;
210 p->RIOError.Entry = Entry;
211 p->RIOError.Other = SubEnt;
212 return -ENXIO;
213 }
214 /*
215 ** If the RtaUniqueNum is the same, it may be looking at both
216 ** entries for a 16 port RTA, so check the ids
217 */
218 if ((MapP->RtaUniqueNum == p->RIOConnectTable[SubEnt].RtaUniqueNum)
219 && (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) {
220 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", MapP->Name);
221 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", p->RIOConnectTable[SubEnt].Name);
222 p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER;
223 p->RIOError.Entry = Entry;
224 p->RIOError.Other = SubEnt;
225 return -ENXIO;
226 }
227 }
228 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n");
229 /* (7a) */
230 if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
231 rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d-RTA %s is not a multiple of %d!\n", (int) MapP->SysPort, MapP->Name, PORTS_PER_RTA);
232 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
233 p->RIOError.Entry = Entry;
234 return -ENXIO;
235 }
236 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n");
237 /* (7b) */
238 if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
239 rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n", (int) MapP->SysPort, MapP->Name);
240 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
241 p->RIOError.Entry = Entry;
242 return -ENXIO;
243 }
244 for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
245 if (p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT)
246 continue;
247 if (p->RIOConnectTable[SubEnt].RtaUniqueNum) {
248 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n");
249 /* (8) */
250 if ((MapP->SysPort != NO_PORT) && (MapP->SysPort == p->RIOConnectTable[SubEnt].SysPort)) {
251 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n", MapP->Name, p->RIOConnectTable[SubEnt].Name, (int) MapP->SysPort);
252 p->RIOError.Error = TTY_NUMBER_IN_USE;
253 p->RIOError.Entry = Entry;
254 p->RIOError.Other = SubEnt;
255 return -ENXIO;
256 }
257 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n");
258 if (strcmp(MapP->Name, p->RIOConnectTable[SubEnt].Name) == 0 && !(MapP->Flags & RTA16_SECOND_SLOT)) { /* (9) */
259 rio_dprintk(RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name);
260 p->RIOError.Error = NAME_USED_TWICE;
261 p->RIOError.Entry = Entry;
262 p->RIOError.Other = SubEnt;
263 return -ENXIO;
264 }
265 }
266 }
267 } else { /* (6) */
268 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n");
269 if (MapP->ID) {
270 rio_dprintk(RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n", MapP->Name);
271 p->RIOError.Error = HOST_ID_NOT_ZERO;
272 p->RIOError.Entry = Entry;
273 return -ENXIO;
274 }
275 if (MapP->SysPort != NO_PORT) {
276 rio_dprintk(RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n", MapP->Name);
277 p->RIOError.Error = HOST_SYSPORT_BAD;
278 p->RIOError.Entry = Entry;
279 return -ENXIO;
280 }
281 }
282 }
284 /*
285 ** wow! if we get here then it's a goody!
286 */
288 /*
289 ** Zero the (old) entries for each host...
290 */
291 for (Host = 0; Host < RIO_HOSTS; Host++) {
292 for (Entry = 0; Entry < MAX_RUP; Entry++) {
293 memset(&p->RIOHosts[Host].Mapping[Entry], 0, sizeof(struct Map));
294 }
295 memset(&p->RIOHosts[Host].Name[0], 0, sizeof(p->RIOHosts[Host].Name));
296 }
298 /*
299 ** Copy in the new table entries
300 */
301 for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
302 rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry);
303 MapP = &p->RIOConnectTable[Entry];
305 /*
306 ** Now, if it is an empty slot ignore it!
307 */
308 if (MapP->HostUniqueNum == 0)
309 continue;
311 /*
312 ** we saved the host number earlier, so grab it back
313 */
314 HostP = &p->RIOHosts[MapP->Topology[0].Unit];
316 /*
317 ** If it is a host, then we only need to fill in the name field.
318 */
319 if (MapP->ID == 0) {
320 rio_dprintk(RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name);
321 memcpy(HostP->Name, MapP->Name, MAX_NAME_LEN);
322 continue;
323 }
325 /*
326 ** Its an RTA entry, so fill in the host mapping entries for it
327 ** and the port mapping entries. Notice that entry zero is for
328 ** ID one.
329 */
330 HostMapP = &HostP->Mapping[MapP->ID - 1];
332 if (MapP->Flags & SLOT_IN_USE) {
333 rio_dprintk(RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name);
334 /*
335 ** structure assign, then sort out the bits we shouldn't have done
336 */
337 *HostMapP = *MapP;
339 HostMapP->Flags = SLOT_IN_USE;
340 if (MapP->Flags & RTA16_SECOND_SLOT)
341 HostMapP->Flags |= RTA16_SECOND_SLOT;
343 RIOReMapPorts(p, HostP, HostMapP);
344 } else {
345 rio_dprintk(RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name);
346 }
347 }
349 for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
350 p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry];
351 }
353 for (Host = 0; Host < p->RIONumHosts; Host++) {
354 for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
355 p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
356 p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK;
357 }
358 for (Entry = 0; Entry < MAX_RUP; Entry++) {
359 for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
360 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
361 p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = NO_LINK;
362 }
363 }
364 if (!p->RIOHosts[Host].Name[0]) {
365 memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
366 p->RIOHosts[Host].Name[5] += Host;
367 }
368 /*
369 ** Check that default name assigned is unique.
370 */
371 Host1 = Host;
372 NameIsUnique = 0;
373 while (!NameIsUnique) {
374 NameIsUnique = 1;
375 for (Host2 = 0; Host2 < p->RIONumHosts; Host2++) {
376 if (Host2 == Host)
377 continue;
378 if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name)
379 == 0) {
380 NameIsUnique = 0;
381 Host1++;
382 if (Host1 >= p->RIONumHosts)
383 Host1 = 0;
384 p->RIOHosts[Host].Name[5] = '1' + Host1;
385 }
386 }
387 }
388 /*
389 ** Rename host if name already used.
390 */
391 if (Host1 != Host) {
392 rio_dprintk(RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name);
393 memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
394 p->RIOHosts[Host].Name[5] += Host1;
395 }
396 rio_dprintk(RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name);
397 }
398 return 0;
399 }
401 /*
402 ** User process needs the config table - build it from first
403 ** principles.
404 **
405 * FIXME: SMP locking
406 */
407 int RIOApel(struct rio_info *p)
408 {
409 int Host;
410 int link;
411 int Rup;
412 int Next = 0;
413 struct Map *MapP;
414 struct Host *HostP;
415 unsigned long flags;
417 rio_dprintk(RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n");
419 memset(&p->RIOConnectTable[0], 0, sizeof(struct Map) * TOTAL_MAP_ENTRIES);
421 for (Host = 0; Host < RIO_HOSTS; Host++) {
422 rio_dprintk(RIO_DEBUG_TABLE, "Processing host %d\n", Host);
423 HostP = &p->RIOHosts[Host];
424 rio_spin_lock_irqsave(&HostP->HostLock, flags);
426 MapP = &p->RIOConnectTable[Next++];
427 MapP->HostUniqueNum = HostP->UniqueNum;
428 if ((HostP->Flags & RUN_STATE) != RC_RUNNING)
429 continue;
430 MapP->RtaUniqueNum = 0;
431 MapP->ID = 0;
432 MapP->Flags = SLOT_IN_USE;
433 MapP->SysPort = NO_PORT;
434 for (link = 0; link < LINKS_PER_UNIT; link++)
435 MapP->Topology[link] = HostP->Topology[link];
436 memcpy(MapP->Name, HostP->Name, MAX_NAME_LEN);
437 for (Rup = 0; Rup < MAX_RUP; Rup++) {
438 if (HostP->Mapping[Rup].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) {
439 p->RIOConnectTable[Next] = HostP->Mapping[Rup];
440 if (HostP->Mapping[Rup].Flags & SLOT_IN_USE)
441 p->RIOConnectTable[Next].Flags |= SLOT_IN_USE;
442 if (HostP->Mapping[Rup].Flags & SLOT_TENTATIVE)
443 p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE;
444 if (HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT)
445 p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT;
446 Next++;
447 }
448 }
449 rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
450 }
451 return 0;
452 }
454 /*
455 ** config.rio has taken a dislike to one of the gross maps entries.
456 ** if the entry is suitably inactive, then we can gob on it and remove
457 ** it from the table.
458 */
459 int RIODeleteRta(struct rio_info *p, struct Map *MapP)
460 {
461 int host, entry, port, link;
462 int SysPort;
463 struct Host *HostP;
464 struct Map *HostMapP;
465 struct Port *PortP;
466 int work_done = 0;
467 unsigned long lock_flags, sem_flags;
469 rio_dprintk(RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n", MapP->HostUniqueNum, MapP->RtaUniqueNum);
471 for (host = 0; host < p->RIONumHosts; host++) {
472 HostP = &p->RIOHosts[host];
474 rio_spin_lock_irqsave(&HostP->HostLock, lock_flags);
476 if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
477 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
478 continue;
479 }
481 for (entry = 0; entry < MAX_RUP; entry++) {
482 if (MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum) {
483 HostMapP = &HostP->Mapping[entry];
484 rio_dprintk(RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", entry, HostP->Name);
486 /*
487 ** Check all four links of the unit are disconnected
488 */
489 for (link = 0; link < LINKS_PER_UNIT; link++) {
490 if (HostMapP->Topology[link].Unit != ROUTE_DISCONNECT) {
491 rio_dprintk(RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n");
492 p->RIOError.Error = UNIT_IS_IN_USE;
493 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
494 return -EBUSY;
495 }
496 }
497 /*
498 ** Slot has been allocated, BUT not booted/routed/
499 ** connected/selected or anything else-ed
500 */
501 SysPort = HostMapP->SysPort;
503 if (SysPort != NO_PORT) {
504 for (port = SysPort; port < SysPort + PORTS_PER_RTA; port++) {
505 PortP = p->RIOPortp[port];
506 rio_dprintk(RIO_DEBUG_TABLE, "Unmap port\n");
508 rio_spin_lock_irqsave(&PortP->portSem, sem_flags);
510 PortP->Mapped = 0;
512 if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) {
514 rio_dprintk(RIO_DEBUG_TABLE, "Gob on port\n");
515 PortP->TxBufferIn = PortP->TxBufferOut = 0;
516 /* What should I do
517 wakeup( &PortP->TxBufferIn );
518 wakeup( &PortP->TxBufferOut);
519 */
520 PortP->InUse = NOT_INUSE;
521 /* What should I do
522 wakeup( &PortP->InUse );
523 signal(PortP->TtyP->t_pgrp,SIGKILL);
524 ttyflush(PortP->TtyP,(FREAD|FWRITE));
525 */
526 PortP->State |= RIO_CLOSING | RIO_DELETED;
527 }
529 /*
530 ** For the second slot of a 16 port RTA, the
531 ** driver needs to reset the changes made to
532 ** the phb to port mappings in RIORouteRup.
533 */
534 if (PortP->SecondBlock) {
535 u16 dest_unit = HostMapP->ID;
536 u16 dest_port = port - SysPort;
537 u16 __iomem *TxPktP;
538 struct PKT __iomem *Pkt;
540 for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) {
541 /*
542 ** *TxPktP is the pointer to the
543 ** transmit packet on the host card.
544 ** This needs to be translated into
545 ** a 32 bit pointer so it can be
546 ** accessed from the driver.
547 */
548 Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&*TxPktP));
549 rio_dprintk(RIO_DEBUG_TABLE, "Tx packet (%x) destination: Old %x:%x New %x:%x\n", readw(TxPktP), readb(&Pkt->dest_unit), readb(&Pkt->dest_port), dest_unit, dest_port);
550 writew(dest_unit, &Pkt->dest_unit);
551 writew(dest_port, &Pkt->dest_port);
552 }
553 rio_dprintk(RIO_DEBUG_TABLE, "Port %d phb destination: Old %x:%x New %x:%x\n", port, readb(&PortP->PhbP->destination) & 0xff, (readb(&PortP->PhbP->destination) >> 8) & 0xff, dest_unit, dest_port);
554 writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination);
555 }
556 rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags);
557 }
558 }
559 rio_dprintk(RIO_DEBUG_TABLE, "Entry nulled.\n");
560 memset(HostMapP, 0, sizeof(struct Map));
561 work_done++;
562 }
563 }
564 rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
565 }
567 /* XXXXX lock me up */
568 for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) {
569 if (p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
570 memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map));
571 work_done++;
572 }
573 if (p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
574 memset(&p->RIOConnectTable[entry], 0, sizeof(struct Map));
575 work_done++;
576 }
577 }
578 if (work_done)
579 return 0;
581 rio_dprintk(RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n");
582 p->RIOError.Error = COULDNT_FIND_ENTRY;
583 return -ENXIO;
584 }
586 int RIOAssignRta(struct rio_info *p, struct Map *MapP)
587 {
588 int host;
589 struct Map *HostMapP;
590 char *sptr;
591 int link;
594 rio_dprintk(RIO_DEBUG_TABLE, "Assign entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort);
596 if ((MapP->ID != (u16) - 1) && ((int) MapP->ID < (int) 1 || (int) MapP->ID > MAX_RUP)) {
597 rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
598 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
599 return -EINVAL;
600 }
601 if (MapP->RtaUniqueNum == 0) {
602 rio_dprintk(RIO_DEBUG_TABLE, "Rta Unique number zero!\n");
603 p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO;
604 return -EINVAL;
605 }
606 if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
607 rio_dprintk(RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n", (int) MapP->SysPort, PORTS_PER_RTA);
608 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
609 return -EINVAL;
610 }
611 if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
612 rio_dprintk(RIO_DEBUG_TABLE, "Port %d not valid!\n", (int) MapP->SysPort);
613 p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
614 return -EINVAL;
615 }
617 /*
618 ** Copy the name across to the map entry.
619 */
620 MapP->Name[MAX_NAME_LEN - 1] = '\0';
621 sptr = MapP->Name;
622 while (*sptr) {
623 if (*sptr < ' ' || *sptr > '~') {
624 rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
625 p->RIOError.Error = BAD_CHARACTER_IN_NAME;
626 return -EINVAL;
627 }
628 sptr++;
629 }
631 for (host = 0; host < p->RIONumHosts; host++) {
632 if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
633 if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
634 p->RIOError.Error = HOST_NOT_RUNNING;
635 return -ENXIO;
636 }
638 /*
639 ** Now we have a host we need to allocate an ID
640 ** if the entry does not already have one.
641 */
642 if (MapP->ID == (u16) - 1) {
643 int nNewID;
645 rio_dprintk(RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n", MapP->Name);
646 /*
647 ** The idea here is to allow RTA's to be assigned
648 ** before they actually appear on the network.
649 ** This allows the addition of RTA's without having
650 ** to plug them in.
651 ** What we do is:
652 ** - Find a free ID and allocate it to the RTA.
653 ** - If this map entry is the second half of a
654 ** 16 port entry then find the other half and
655 ** make sure the 2 cross reference each other.
656 */
657 if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0) {
658 p->RIOError.Error = COULDNT_FIND_ENTRY;
659 return -EBUSY;
660 }
661 MapP->ID = (u16) nNewID + 1;
662 rio_dprintk(RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID);
663 HostMapP = &p->RIOHosts[host].Mapping[nNewID];
664 HostMapP->RtaUniqueNum = MapP->RtaUniqueNum;
665 HostMapP->HostUniqueNum = MapP->HostUniqueNum;
666 HostMapP->ID = MapP->ID;
667 for (link = 0; link < LINKS_PER_UNIT; link++) {
668 HostMapP->Topology[link].Unit = ROUTE_DISCONNECT;
669 HostMapP->Topology[link].Link = NO_LINK;
670 }
671 if (MapP->Flags & RTA16_SECOND_SLOT) {
672 int unit;
674 for (unit = 0; unit < MAX_RUP; unit++)
675 if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum == MapP->RtaUniqueNum)
676 break;
677 if (unit == MAX_RUP) {
678 p->RIOError.Error = COULDNT_FIND_ENTRY;
679 return -EBUSY;
680 }
681 HostMapP->Flags |= RTA16_SECOND_SLOT;
682 HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID;
683 p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID;
684 rio_dprintk(RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n", MapP->ID, p->RIOHosts[host].Mapping[unit].ID);
685 }
686 }
688 HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
690 if (HostMapP->Flags & SLOT_IN_USE) {
691 rio_dprintk(RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID);
692 p->RIOError.Error = ID_ALREADY_IN_USE;
693 return -EBUSY;
694 }
696 /*
697 ** Assign the sys ports and the name, and mark the slot as
698 ** being in use.
699 */
700 HostMapP->SysPort = MapP->SysPort;
701 if ((MapP->Flags & RTA16_SECOND_SLOT) == 0)
702 memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
703 HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED;
704 #ifdef NEED_TO_FIX
705 RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID - 1]);
706 #endif
707 if (MapP->Flags & RTA16_SECOND_SLOT)
708 HostMapP->Flags |= RTA16_SECOND_SLOT;
710 RIOReMapPorts(p, &p->RIOHosts[host], HostMapP);
711 /*
712 ** Adjust 2nd block of 8 phbs
713 */
714 if (MapP->Flags & RTA16_SECOND_SLOT)
715 RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1);
717 if (HostMapP->SysPort != NO_PORT) {
718 if (HostMapP->SysPort < p->RIOFirstPortsBooted)
719 p->RIOFirstPortsBooted = HostMapP->SysPort;
720 if (HostMapP->SysPort > p->RIOLastPortsBooted)
721 p->RIOLastPortsBooted = HostMapP->SysPort;
722 }
723 if (MapP->Flags & RTA16_SECOND_SLOT)
724 rio_dprintk(RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n", p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name);
725 else
726 rio_dprintk(RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name);
727 return 0;
728 }
729 }
730 p->RIOError.Error = UNKNOWN_HOST_NUMBER;
731 rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
732 return -ENXIO;
733 }
736 int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP)
737 {
738 struct Port *PortP;
739 unsigned int SubEnt;
740 unsigned int HostPort;
741 unsigned int SysPort;
742 u16 RtaType;
743 unsigned long flags;
745 rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int) HostMapP->SysPort, HostMapP->ID);
747 /*
748 ** We need to tell the UnixRups which sysport the rup corresponds to
749 */
750 HostP->UnixRups[HostMapP->ID - 1].BaseSysPort = HostMapP->SysPort;
752 if (HostMapP->SysPort == NO_PORT)
753 return (0);
755 RtaType = GetUnitType(HostMapP->RtaUniqueNum);
756 rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n", (int) HostMapP->SysPort, (int) HostMapP->SysPort + PORTS_PER_RTA - 1);
758 /*
759 ** now map each of its eight ports
760 */
761 for (SubEnt = 0; SubEnt < PORTS_PER_RTA; SubEnt++) {
762 rio_dprintk(RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", SubEnt, (int) HostMapP->SysPort);
763 SysPort = HostMapP->SysPort + SubEnt; /* portnumber within system */
764 /* portnumber on host */
766 HostPort = (HostMapP->ID - 1) * PORTS_PER_RTA + SubEnt;
768 rio_dprintk(RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp);
769 PortP = p->RIOPortp[SysPort];
770 rio_dprintk(RIO_DEBUG_TABLE, "Map port\n");
772 /*
773 ** Point at all the real neat data structures
774 */
775 rio_spin_lock_irqsave(&PortP->portSem, flags);
776 PortP->HostP = HostP;
777 PortP->Caddr = HostP->Caddr;
779 /*
780 ** The PhbP cannot be filled in yet
781 ** unless the host has been booted
782 */
783 if ((HostP->Flags & RUN_STATE) == RC_RUNNING) {
784 struct PHB __iomem *PhbP = PortP->PhbP = &HostP->PhbP[HostPort];
785 PortP->TxAdd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_add));
786 PortP->TxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_start));
787 PortP->TxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_end));
788 PortP->RxRemove = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_remove));
789 PortP->RxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_start));
790 PortP->RxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_end));
791 } else
792 PortP->PhbP = NULL;
794 /*
795 ** port related flags
796 */
797 PortP->HostPort = HostPort;
798 /*
799 ** For each part of a 16 port RTA, RupNum is ID - 1.
800 */
801 PortP->RupNum = HostMapP->ID - 1;
802 if (HostMapP->Flags & RTA16_SECOND_SLOT) {
803 PortP->ID2 = HostMapP->ID2 - 1;
804 PortP->SecondBlock = 1;
805 } else {
806 PortP->ID2 = 0;
807 PortP->SecondBlock = 0;
808 }
809 PortP->RtaUniqueNum = HostMapP->RtaUniqueNum;
811 /*
812 ** If the port was already mapped then thats all we need to do.
813 */
814 if (PortP->Mapped) {
815 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
816 continue;
817 } else
818 HostMapP->Flags &= ~RTA_NEWBOOT;
820 PortP->State = 0;
821 PortP->Config = 0;
822 /*
823 ** Check out the module type - if it is special (read only etc.)
824 ** then we need to set flags in the PortP->Config.
825 ** Note: For 16 port RTA, all ports are of the same type.
826 */
827 if (RtaType == TYPE_RTA16) {
828 PortP->Config |= p->RIOModuleTypes[HostP->UnixRups[HostMapP->ID - 1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE];
829 } else {
830 if (SubEnt < PORTS_PER_MODULE)
831 PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
832 else
833 PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
834 }
836 /*
837 ** more port related flags
838 */
839 PortP->PortState = 0;
840 PortP->ModemLines = 0;
841 PortP->ModemState = 0;
842 PortP->CookMode = COOK_WELL;
843 PortP->ParamSem = 0;
844 PortP->FlushCmdBodge = 0;
845 PortP->WflushFlag = 0;
846 PortP->MagicFlags = 0;
847 PortP->Lock = 0;
848 PortP->Store = 0;
849 PortP->FirstOpen = 1;
851 /*
852 ** Buffers 'n things
853 */
854 PortP->RxDataStart = 0;
855 PortP->Cor2Copy = 0;
856 PortP->Name = &HostMapP->Name[0];
857 PortP->statsGather = 0;
858 PortP->txchars = 0;
859 PortP->rxchars = 0;
860 PortP->opens = 0;
861 PortP->closes = 0;
862 PortP->ioctls = 0;
863 if (PortP->TxRingBuffer)
864 memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
865 else if (p->RIOBufferSize) {
866 PortP->TxRingBuffer = kmalloc(p->RIOBufferSize, GFP_KERNEL);
867 memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
868 }
869 PortP->TxBufferOut = 0;
870 PortP->TxBufferIn = 0;
871 PortP->Debug = 0;
872 /*
873 ** LastRxTgl stores the state of the rx toggle bit for this
874 ** port, to be compared with the state of the next pkt received.
875 ** If the same, we have received the same rx pkt from the RTA
876 ** twice. Initialise to a value not equal to PHB_RX_TGL or 0.
877 */
878 PortP->LastRxTgl = ~(u8) PHB_RX_TGL;
880 /*
881 ** and mark the port as usable
882 */
883 PortP->Mapped = 1;
884 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
885 }
886 if (HostMapP->SysPort < p->RIOFirstPortsMapped)
887 p->RIOFirstPortsMapped = HostMapP->SysPort;
888 if (HostMapP->SysPort > p->RIOLastPortsMapped)
889 p->RIOLastPortsMapped = HostMapP->SysPort;
891 return 0;
892 }
894 int RIOChangeName(struct rio_info *p, struct Map *MapP)
895 {
896 int host;
897 struct Map *HostMapP;
898 char *sptr;
900 rio_dprintk(RIO_DEBUG_TABLE, "Change name entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort);
902 if (MapP->ID > MAX_RUP) {
903 rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
904 p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
905 return -EINVAL;
906 }
908 MapP->Name[MAX_NAME_LEN - 1] = '\0';
909 sptr = MapP->Name;
911 while (*sptr) {
912 if (*sptr < ' ' || *sptr > '~') {
913 rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
914 p->RIOError.Error = BAD_CHARACTER_IN_NAME;
915 return -EINVAL;
916 }
917 sptr++;
918 }
920 for (host = 0; host < p->RIONumHosts; host++) {
921 if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
922 if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
923 p->RIOError.Error = HOST_NOT_RUNNING;
924 return -ENXIO;
925 }
926 if (MapP->ID == 0) {
927 memcpy(p->RIOHosts[host].Name, MapP->Name, MAX_NAME_LEN);
928 return 0;
929 }
931 HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
933 if (HostMapP->RtaUniqueNum != MapP->RtaUniqueNum) {
934 p->RIOError.Error = RTA_NUMBER_WRONG;
935 return -ENXIO;
936 }
937 memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
938 return 0;
939 }
940 }
941 p->RIOError.Error = UNKNOWN_HOST_NUMBER;
942 rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
943 return -ENXIO;
944 }