blob: f121357e5af093ee270e9332ce6267df807ea724 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2** -----------------------------------------------------------------------------
3**
4** Perle Specialix driver for Linux
5** ported from the existing SCO driver source
6**
7 *
8 * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
9 *
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.
14 *
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.
19 *
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.
23**
24** Module : riocmd.c
25** SID : 1.2
26** Last Modified : 11/6/98 10:33:41
27** Retrieved : 11/6/98 10:33:49
28**
29** ident @(#)riocmd.c 1.2
30**
31** -----------------------------------------------------------------------------
32*/
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34#include <linux/module.h>
Alexey Dobriyand43c36d2009-10-07 17:09:06 +040035#include <linux/sched.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include <linux/slab.h>
37#include <linux/errno.h>
38#include <linux/tty.h>
39#include <asm/io.h>
40#include <asm/system.h>
41#include <asm/string.h>
Alan Cox00d83a52006-03-24 03:18:28 -080042#include <asm/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
44#include <linux/termios.h>
45#include <linux/serial.h>
46
47#include <linux/generic_serial.h>
48
49#include "linux_compat.h"
50#include "rio_linux.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#include "pkt.h"
52#include "daemon.h"
53#include "rio.h"
54#include "riospace.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070055#include "cmdpkt.h"
56#include "map.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070057#include "rup.h"
58#include "port.h"
59#include "riodrvr.h"
60#include "rioinfo.h"
61#include "func.h"
62#include "errors.h"
63#include "pci.h"
64
65#include "parmmap.h"
66#include "unixrup.h"
67#include "board.h"
68#include "host.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070069#include "phb.h"
70#include "link.h"
71#include "cmdblk.h"
72#include "route.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070073#include "cirrus.h"
74
75
76static struct IdentifyRta IdRta;
77static struct KillNeighbour KillUnit;
78
Andrew Morton8d8706e2006-01-11 12:17:49 -080079int RIOFoadRta(struct Host *HostP, struct Map *MapP)
Linus Torvalds1da177e2005-04-16 15:20:36 -070080{
81 struct CmdBlk *CmdBlkP;
82
Andrew Morton8d8706e2006-01-11 12:17:49 -080083 rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -070084
85 CmdBlkP = RIOGetCmdBlk();
86
Andrew Morton8d8706e2006-01-11 12:17:49 -080087 if (!CmdBlkP) {
88 rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: GetCmdBlk failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 return -ENXIO;
90 }
91
92 CmdBlkP->Packet.dest_unit = MapP->ID;
93 CmdBlkP->Packet.dest_port = BOOT_RUP;
Andrew Morton8d8706e2006-01-11 12:17:49 -080094 CmdBlkP->Packet.src_unit = 0;
95 CmdBlkP->Packet.src_port = BOOT_RUP;
96 CmdBlkP->Packet.len = 0x84;
97 CmdBlkP->Packet.data[0] = IFOAD;
98 CmdBlkP->Packet.data[1] = 0;
99 CmdBlkP->Packet.data[2] = IFOAD_MAGIC & 0xFF;
100 CmdBlkP->Packet.data[3] = (IFOAD_MAGIC >> 8) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
Andrew Morton8d8706e2006-01-11 12:17:49 -0800102 if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) {
103 rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: Failed to queue foad command\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 return -EIO;
105 }
106 return 0;
107}
108
Andrew Morton8d8706e2006-01-11 12:17:49 -0800109int RIOZombieRta(struct Host *HostP, struct Map *MapP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110{
111 struct CmdBlk *CmdBlkP;
112
Andrew Morton8d8706e2006-01-11 12:17:49 -0800113 rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
115 CmdBlkP = RIOGetCmdBlk();
116
Andrew Morton8d8706e2006-01-11 12:17:49 -0800117 if (!CmdBlkP) {
118 rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: GetCmdBlk failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 return -ENXIO;
120 }
121
122 CmdBlkP->Packet.dest_unit = MapP->ID;
123 CmdBlkP->Packet.dest_port = BOOT_RUP;
Andrew Morton8d8706e2006-01-11 12:17:49 -0800124 CmdBlkP->Packet.src_unit = 0;
125 CmdBlkP->Packet.src_port = BOOT_RUP;
126 CmdBlkP->Packet.len = 0x84;
127 CmdBlkP->Packet.data[0] = ZOMBIE;
128 CmdBlkP->Packet.data[1] = 0;
129 CmdBlkP->Packet.data[2] = ZOMBIE_MAGIC & 0xFF;
130 CmdBlkP->Packet.data[3] = (ZOMBIE_MAGIC >> 8) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131
Andrew Morton8d8706e2006-01-11 12:17:49 -0800132 if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) {
133 rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: Failed to queue zombie command\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 return -EIO;
135 }
136 return 0;
137}
138
Alan Cox00d83a52006-03-24 03:18:28 -0800139int RIOCommandRta(struct rio_info *p, unsigned long RtaUnique, int (*func) (struct Host * HostP, struct Map * MapP))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140{
Alan Cox00d83a52006-03-24 03:18:28 -0800141 unsigned int Host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142
Alan Cox554b7c82006-03-24 03:18:32 -0800143 rio_dprintk(RIO_DEBUG_CMD, "Command RTA 0x%lx func %p\n", RtaUnique, func);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
Andrew Morton8d8706e2006-01-11 12:17:49 -0800145 if (!RtaUnique)
146 return (0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
Andrew Morton8d8706e2006-01-11 12:17:49 -0800148 for (Host = 0; Host < p->RIONumHosts; Host++) {
Alan Cox00d83a52006-03-24 03:18:28 -0800149 unsigned int Rta;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 struct Host *HostP = &p->RIOHosts[Host];
151
Andrew Morton8d8706e2006-01-11 12:17:49 -0800152 for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 struct Map *MapP = &HostP->Mapping[Rta];
154
Andrew Morton8d8706e2006-01-11 12:17:49 -0800155 if (MapP->RtaUniqueNum == RtaUnique) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 uint Link;
157
158 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800159 ** now, lets just check we have a route to it...
160 ** IF the routing stuff is working, then one of the
161 ** topology entries for this unit will have a legit
162 ** route *somewhere*. We care not where - if its got
163 ** any connections, we can get to it.
164 */
165 for (Link = 0; Link < LINKS_PER_UNIT; Link++) {
Alan Cox00d83a52006-03-24 03:18:28 -0800166 if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800168 ** Its worth trying the operation...
169 */
170 return (*func) (HostP, MapP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 }
172 }
173 }
174 }
175 }
176 return -ENXIO;
177}
178
179
Al Virod886cb52006-05-27 00:08:25 -0400180int RIOIdentifyRta(struct rio_info *p, void __user * arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181{
Alan Cox00d83a52006-03-24 03:18:28 -0800182 unsigned int Host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
Alan Cox00d83a52006-03-24 03:18:28 -0800184 if (copy_from_user(&IdRta, arg, sizeof(IdRta))) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800185 rio_dprintk(RIO_DEBUG_CMD, "RIO_IDENTIFY_RTA copy failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 p->RIOError.Error = COPYIN_FAILED;
187 return -EFAULT;
188 }
189
Andrew Morton8d8706e2006-01-11 12:17:49 -0800190 for (Host = 0; Host < p->RIONumHosts; Host++) {
Alan Cox00d83a52006-03-24 03:18:28 -0800191 unsigned int Rta;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 struct Host *HostP = &p->RIOHosts[Host];
193
Andrew Morton8d8706e2006-01-11 12:17:49 -0800194 for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 struct Map *MapP = &HostP->Mapping[Rta];
196
Andrew Morton8d8706e2006-01-11 12:17:49 -0800197 if (MapP->RtaUniqueNum == IdRta.RtaUnique) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 uint Link;
199 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800200 ** now, lets just check we have a route to it...
201 ** IF the routing stuff is working, then one of the
202 ** topology entries for this unit will have a legit
203 ** route *somewhere*. We care not where - if its got
204 ** any connections, we can get to it.
205 */
206 for (Link = 0; Link < LINKS_PER_UNIT; Link++) {
Alan Cox00d83a52006-03-24 03:18:28 -0800207 if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800209 ** Its worth trying the operation...
210 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 struct CmdBlk *CmdBlkP;
212
Andrew Morton8d8706e2006-01-11 12:17:49 -0800213 rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214
215 CmdBlkP = RIOGetCmdBlk();
216
Andrew Morton8d8706e2006-01-11 12:17:49 -0800217 if (!CmdBlkP) {
218 rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: GetCmdBlk failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 return -ENXIO;
220 }
Andrew Morton8d8706e2006-01-11 12:17:49 -0800221
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 CmdBlkP->Packet.dest_unit = MapP->ID;
223 CmdBlkP->Packet.dest_port = BOOT_RUP;
Andrew Morton8d8706e2006-01-11 12:17:49 -0800224 CmdBlkP->Packet.src_unit = 0;
225 CmdBlkP->Packet.src_port = BOOT_RUP;
226 CmdBlkP->Packet.len = 0x84;
227 CmdBlkP->Packet.data[0] = IDENTIFY;
228 CmdBlkP->Packet.data[1] = 0;
229 CmdBlkP->Packet.data[2] = IdRta.ID;
230
231 if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) {
232 rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: Failed to queue command\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 return -EIO;
234 }
235 return 0;
236 }
237 }
238 }
239 }
Andrew Morton8d8706e2006-01-11 12:17:49 -0800240 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 return -ENOENT;
242}
243
244
Al Virod886cb52006-05-27 00:08:25 -0400245int RIOKillNeighbour(struct rio_info *p, void __user * arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246{
247 uint Host;
248 uint ID;
249 struct Host *HostP;
250 struct CmdBlk *CmdBlkP;
251
Andrew Morton8d8706e2006-01-11 12:17:49 -0800252 rio_dprintk(RIO_DEBUG_CMD, "KILL HOST NEIGHBOUR\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253
Alan Cox00d83a52006-03-24 03:18:28 -0800254 if (copy_from_user(&KillUnit, arg, sizeof(KillUnit))) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800255 rio_dprintk(RIO_DEBUG_CMD, "RIO_KILL_NEIGHBOUR copy failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 p->RIOError.Error = COPYIN_FAILED;
257 return -EFAULT;
258 }
259
Andrew Morton8d8706e2006-01-11 12:17:49 -0800260 if (KillUnit.Link > 3)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 return -ENXIO;
Andrew Morton8d8706e2006-01-11 12:17:49 -0800262
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 CmdBlkP = RIOGetCmdBlk();
264
Andrew Morton8d8706e2006-01-11 12:17:49 -0800265 if (!CmdBlkP) {
266 rio_dprintk(RIO_DEBUG_CMD, "UFOAD: GetCmdBlk failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 return -ENXIO;
268 }
269
270 CmdBlkP->Packet.dest_unit = 0;
Andrew Morton8d8706e2006-01-11 12:17:49 -0800271 CmdBlkP->Packet.src_unit = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 CmdBlkP->Packet.dest_port = BOOT_RUP;
Andrew Morton8d8706e2006-01-11 12:17:49 -0800273 CmdBlkP->Packet.src_port = BOOT_RUP;
274 CmdBlkP->Packet.len = 0x84;
275 CmdBlkP->Packet.data[0] = UFOAD;
276 CmdBlkP->Packet.data[1] = KillUnit.Link;
277 CmdBlkP->Packet.data[2] = UFOAD_MAGIC & 0xFF;
278 CmdBlkP->Packet.data[3] = (UFOAD_MAGIC >> 8) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
Andrew Morton8d8706e2006-01-11 12:17:49 -0800280 for (Host = 0; Host < p->RIONumHosts; Host++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 ID = 0;
282 HostP = &p->RIOHosts[Host];
283
Andrew Morton8d8706e2006-01-11 12:17:49 -0800284 if (HostP->UniqueNum == KillUnit.UniqueNum) {
285 if (RIOQueueCmdBlk(HostP, RTAS_PER_HOST + KillUnit.Link, CmdBlkP) == RIO_FAIL) {
286 rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 return -EIO;
288 }
289 return 0;
290 }
291
Andrew Morton8d8706e2006-01-11 12:17:49 -0800292 for (ID = 0; ID < RTAS_PER_HOST; ID++) {
293 if (HostP->Mapping[ID].RtaUniqueNum == KillUnit.UniqueNum) {
294 CmdBlkP->Packet.dest_unit = ID + 1;
295 if (RIOQueueCmdBlk(HostP, ID, CmdBlkP) == RIO_FAIL) {
296 rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 return -EIO;
298 }
299 return 0;
300 }
301 }
302 }
Andrew Morton8d8706e2006-01-11 12:17:49 -0800303 RIOFreeCmdBlk(CmdBlkP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 return -ENXIO;
305}
306
Andrew Morton8d8706e2006-01-11 12:17:49 -0800307int RIOSuspendBootRta(struct Host *HostP, int ID, int Link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308{
309 struct CmdBlk *CmdBlkP;
310
Andrew Morton8d8706e2006-01-11 12:17:49 -0800311 rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA ID %d, link %c\n", ID, 'A' + Link);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
313 CmdBlkP = RIOGetCmdBlk();
314
Andrew Morton8d8706e2006-01-11 12:17:49 -0800315 if (!CmdBlkP) {
316 rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: GetCmdBlk failed\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 return -ENXIO;
318 }
319
320 CmdBlkP->Packet.dest_unit = ID;
321 CmdBlkP->Packet.dest_port = BOOT_RUP;
Andrew Morton8d8706e2006-01-11 12:17:49 -0800322 CmdBlkP->Packet.src_unit = 0;
323 CmdBlkP->Packet.src_port = BOOT_RUP;
324 CmdBlkP->Packet.len = 0x84;
325 CmdBlkP->Packet.data[0] = IWAIT;
326 CmdBlkP->Packet.data[1] = Link;
327 CmdBlkP->Packet.data[2] = IWAIT_MAGIC & 0xFF;
328 CmdBlkP->Packet.data[3] = (IWAIT_MAGIC >> 8) & 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
Andrew Morton8d8706e2006-01-11 12:17:49 -0800330 if (RIOQueueCmdBlk(HostP, ID - 1, CmdBlkP) == RIO_FAIL) {
331 rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: Failed to queue iwait command\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 return -EIO;
333 }
334 return 0;
335}
336
Andrew Morton8d8706e2006-01-11 12:17:49 -0800337int RIOFoadWakeup(struct rio_info *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338{
339 int port;
Alan Cox00d83a52006-03-24 03:18:28 -0800340 struct Port *PortP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 unsigned long flags;
342
Andrew Morton8d8706e2006-01-11 12:17:49 -0800343 for (port = 0; port < RIO_PORTS; port++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 PortP = p->RIOPortp[port];
345
346 rio_spin_lock_irqsave(&PortP->portSem, flags);
347 PortP->Config = 0;
348 PortP->State = 0;
349 PortP->InUse = NOT_INUSE;
350 PortP->PortState = 0;
351 PortP->FlushCmdBodge = 0;
352 PortP->ModemLines = 0;
353 PortP->ModemState = 0;
354 PortP->CookMode = 0;
355 PortP->ParamSem = 0;
356 PortP->Mapped = 0;
357 PortP->WflushFlag = 0;
358 PortP->MagicFlags = 0;
359 PortP->RxDataStart = 0;
360 PortP->TxBufferIn = 0;
361 PortP->TxBufferOut = 0;
362 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
363 }
Andrew Morton8d8706e2006-01-11 12:17:49 -0800364 return (0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365}
366
367/*
368** Incoming command on the COMMAND_RUP to be processed.
369*/
Al Virod886cb52006-05-27 00:08:25 -0400370static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, struct PKT __iomem *PacketP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371{
Al Virod886cb52006-05-27 00:08:25 -0400372 struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *)PacketP->data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 struct Port *PortP;
374 struct UnixRup *UnixRupP;
Alan Cox00d83a52006-03-24 03:18:28 -0800375 unsigned short SysPort;
376 unsigned short ReportedModemStatus;
377 unsigned short rup;
378 unsigned short subCommand;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 unsigned long flags;
380
Andrew Morton8d8706e2006-01-11 12:17:49 -0800381 func_enter();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800384 ** 16 port RTA note:
385 ** Command rup packets coming from the RTA will have pkt->data[1] (which
386 ** translates to PktCmdP->PhbNum) set to the host port number for the
387 ** particular unit. To access the correct BaseSysPort for a 16 port RTA,
388 ** we can use PhbNum to get the rup number for the appropriate 8 port
389 ** block (for the first block, this should be equal to 'Rup').
390 */
Alan Cox00d83a52006-03-24 03:18:28 -0800391 rup = readb(&PktCmdP->PhbNum) / (unsigned short) PORTS_PER_RTA;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 UnixRupP = &HostP->UnixRups[rup];
Alan Cox00d83a52006-03-24 03:18:28 -0800393 SysPort = UnixRupP->BaseSysPort + (readb(&PktCmdP->PhbNum) % (unsigned short) PORTS_PER_RTA);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800394 rio_dprintk(RIO_DEBUG_CMD, "Command on rup %d, port %d\n", rup, SysPort);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
Andrew Morton8d8706e2006-01-11 12:17:49 -0800396 if (UnixRupP->BaseSysPort == NO_PORT) {
397 rio_dprintk(RIO_DEBUG_CMD, "OBSCURE ERROR!\n");
398 rio_dprintk(RIO_DEBUG_CMD, "Diagnostics follow. Please WRITE THESE DOWN and report them to Specialix Technical Support\n");
Alan Cox00d83a52006-03-24 03:18:28 -0800399 rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Host number %Zd, name ``%s''\n", HostP - p->RIOHosts, HostP->Name);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800400 rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Rup number 0x%x\n", rup);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
Eric Sesterhenn / Snakebyte84ea7762007-05-10 22:22:48 -0700402 if (Rup < (unsigned short) MAX_RUP) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800403 rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for RTA ``%s''\n", HostP->Mapping[Rup].Name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 } else
Andrew Morton8d8706e2006-01-11 12:17:49 -0800405 rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for link ``%c'' of host ``%s''\n", ('A' + Rup - MAX_RUP), HostP->Name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
Al Viro92af11c2006-05-27 02:24:14 -0400407 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Destination 0x%x:0x%x\n", readb(&PacketP->dest_unit), readb(&PacketP->dest_port));
408 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Source 0x%x:0x%x\n", readb(&PacketP->src_unit), readb(&PacketP->src_port));
409 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Length 0x%x (%d)\n", readb(&PacketP->len), readb(&PacketP->len));
410 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Control 0x%x (%d)\n", readb(&PacketP->control), readb(&PacketP->control));
411 rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Check 0x%x (%d)\n", readw(&PacketP->csum), readw(&PacketP->csum));
412 rio_dprintk(RIO_DEBUG_CMD, "COMMAND information: Host Port Number 0x%x, " "Command Code 0x%x\n", readb(&PktCmdP->PhbNum), readb(&PktCmdP->Command));
Alan Cox554b7c82006-03-24 03:18:32 -0800413 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 }
Andrew Morton8d8706e2006-01-11 12:17:49 -0800415 PortP = p->RIOPortp[SysPort];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 rio_spin_lock_irqsave(&PortP->portSem, flags);
Alan Cox00d83a52006-03-24 03:18:28 -0800417 switch (readb(&PktCmdP->Command)) {
Jiri Slabyd6f63412008-04-30 00:53:57 -0700418 case RIOC_BREAK_RECEIVED:
Andrew Morton8d8706e2006-01-11 12:17:49 -0800419 rio_dprintk(RIO_DEBUG_CMD, "Received a break!\n");
420 /* If the current line disc. is not multi-threading and
421 the current processor is not the default, reset rup_intr
Alan Cox554b7c82006-03-24 03:18:32 -0800422 and return 0 to ensure that the command packet is
Andrew Morton8d8706e2006-01-11 12:17:49 -0800423 not freed. */
424 /* Call tmgr HANGUP HERE */
425 /* Fix this later when every thing works !!!! RAMRAJ */
426 gs_got_break(&PortP->gs);
427 break;
428
Jiri Slabyd6f63412008-04-30 00:53:57 -0700429 case RIOC_COMPLETE:
Alan Cox00d83a52006-03-24 03:18:28 -0800430 rio_dprintk(RIO_DEBUG_CMD, "Command complete on phb %d host %Zd\n", readb(&PktCmdP->PhbNum), HostP - p->RIOHosts);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800431 subCommand = 1;
Alan Cox00d83a52006-03-24 03:18:28 -0800432 switch (readb(&PktCmdP->SubCommand)) {
Jiri Slabyd6f63412008-04-30 00:53:57 -0700433 case RIOC_MEMDUMP:
Alan Cox00d83a52006-03-24 03:18:28 -0800434 rio_dprintk(RIO_DEBUG_CMD, "Memory dump cmd (0x%x) from addr 0x%x\n", readb(&PktCmdP->SubCommand), readw(&PktCmdP->SubAddr));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 break;
Jiri Slabyd6f63412008-04-30 00:53:57 -0700436 case RIOC_READ_REGISTER:
Alan Cox00d83a52006-03-24 03:18:28 -0800437 rio_dprintk(RIO_DEBUG_CMD, "Read register (0x%x)\n", readw(&PktCmdP->SubAddr));
Jiri Slabyd6f63412008-04-30 00:53:57 -0700438 p->CdRegister = (readb(&PktCmdP->ModemStatus) & RIOC_MSVR1_HOST);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800439 break;
440 default:
441 subCommand = 0;
442 break;
443 }
444 if (subCommand)
445 break;
Alan Cox00d83a52006-03-24 03:18:28 -0800446 rio_dprintk(RIO_DEBUG_CMD, "New status is 0x%x was 0x%x\n", readb(&PktCmdP->PortStatus), PortP->PortState);
447 if (PortP->PortState != readb(&PktCmdP->PortStatus)) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800448 rio_dprintk(RIO_DEBUG_CMD, "Mark status & wakeup\n");
Alan Cox00d83a52006-03-24 03:18:28 -0800449 PortP->PortState = readb(&PktCmdP->PortStatus);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800450 /* What should we do here ...
451 wakeup( &PortP->PortState );
452 */
453 } else
454 rio_dprintk(RIO_DEBUG_CMD, "No change\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
Andrew Morton8d8706e2006-01-11 12:17:49 -0800456 /* FALLTHROUGH */
Jiri Slabyd6f63412008-04-30 00:53:57 -0700457 case RIOC_MODEM_STATUS:
Andrew Morton8d8706e2006-01-11 12:17:49 -0800458 /*
459 ** Knock out the tbusy and tstop bits, as these are not relevant
460 ** to the check for modem status change (they're just there because
461 ** it's a convenient place to put them!).
462 */
Alan Cox00d83a52006-03-24 03:18:28 -0800463 ReportedModemStatus = readb(&PktCmdP->ModemStatus);
Jiri Slabyd6f63412008-04-30 00:53:57 -0700464 if ((PortP->ModemState & RIOC_MSVR1_HOST) ==
465 (ReportedModemStatus & RIOC_MSVR1_HOST)) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800466 rio_dprintk(RIO_DEBUG_CMD, "Modem status unchanged 0x%x\n", PortP->ModemState);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800468 ** Update ModemState just in case tbusy or tstop states have
469 ** changed.
470 */
471 PortP->ModemState = ReportedModemStatus;
472 } else {
473 rio_dprintk(RIO_DEBUG_CMD, "Modem status change from 0x%x to 0x%x\n", PortP->ModemState, ReportedModemStatus);
474 PortP->ModemState = ReportedModemStatus;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475#ifdef MODEM_SUPPORT
Andrew Morton8d8706e2006-01-11 12:17:49 -0800476 if (PortP->Mapped) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 /***********************************************************\
478 *************************************************************
479 *** ***
480 *** M O D E M S T A T E C H A N G E ***
481 *** ***
482 *************************************************************
483 \***********************************************************/
484 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800485 ** If the device is a modem, then check the modem
486 ** carrier.
487 */
Alan Coxb5391e22008-07-16 21:55:20 +0100488 if (PortP->gs.port.tty == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 break;
Alan Coxb5391e22008-07-16 21:55:20 +0100490 if (PortP->gs.port.tty->termios == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
Alan Coxb5391e22008-07-16 21:55:20 +0100493 if (!(PortP->gs.port.tty->termios->c_cflag & CLOCAL) && ((PortP->State & (RIO_MOPEN | RIO_WOPEN)))) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800494
495 rio_dprintk(RIO_DEBUG_CMD, "Is there a Carrier?\n");
496 /*
497 ** Is there a carrier?
498 */
Jiri Slabyd6f63412008-04-30 00:53:57 -0700499 if (PortP->ModemState & RIOC_MSVR1_CD) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800500 /*
501 ** Has carrier just appeared?
502 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 if (!(PortP->State & RIO_CARR_ON)) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800504 rio_dprintk(RIO_DEBUG_CMD, "Carrier just came up.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 PortP->State |= RIO_CARR_ON;
Andrew Morton8d8706e2006-01-11 12:17:49 -0800506 /*
507 ** wakeup anyone in WOPEN
508 */
509 if (PortP->State & (PORT_ISOPEN | RIO_WOPEN))
Alan Coxb5391e22008-07-16 21:55:20 +0100510 wake_up_interruptible(&PortP->gs.port.open_wait);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800511 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 } else {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800513 /*
514 ** Has carrier just dropped?
515 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 if (PortP->State & RIO_CARR_ON) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800517 if (PortP->State & (PORT_ISOPEN | RIO_WOPEN | RIO_MOPEN))
Alan Coxb5391e22008-07-16 21:55:20 +0100518 tty_hangup(PortP->gs.port.tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 PortP->State &= ~RIO_CARR_ON;
Andrew Morton8d8706e2006-01-11 12:17:49 -0800520 rio_dprintk(RIO_DEBUG_CMD, "Carrirer just went down\n");
Andrew Morton8d8706e2006-01-11 12:17:49 -0800521 }
522 }
523 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525#endif
Andrew Morton8d8706e2006-01-11 12:17:49 -0800526 }
527 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528
Andrew Morton8d8706e2006-01-11 12:17:49 -0800529 default:
Alan Cox00d83a52006-03-24 03:18:28 -0800530 rio_dprintk(RIO_DEBUG_CMD, "Unknown command %d on CMD_RUP of host %Zd\n", readb(&PktCmdP->Command), HostP - p->RIOHosts);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800531 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 }
533 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
534
Andrew Morton8d8706e2006-01-11 12:17:49 -0800535 func_exit();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536
Alan Cox554b7c82006-03-24 03:18:32 -0800537 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538}
Andrew Morton8d8706e2006-01-11 12:17:49 -0800539
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540/*
541** The command mechanism:
542** Each rup has a chain of commands associated with it.
543** This chain is maintained by routines in this file.
544** Periodically we are called and we run a quick check of all the
545** active chains to determine if there is a command to be executed,
546** and if the rup is ready to accept it.
547**
548*/
549
550/*
551** Allocate an empty command block.
552*/
Andrew Morton8d8706e2006-01-11 12:17:49 -0800553struct CmdBlk *RIOGetCmdBlk(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554{
555 struct CmdBlk *CmdBlkP;
556
Yoann Padioleaudd00cc42007-07-19 01:49:03 -0700557 CmdBlkP = kzalloc(sizeof(struct CmdBlk), GFP_ATOMIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 return CmdBlkP;
559}
560
561/*
562** Return a block to the head of the free list.
563*/
Andrew Morton8d8706e2006-01-11 12:17:49 -0800564void RIOFreeCmdBlk(struct CmdBlk *CmdBlkP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565{
Alan Cox00d83a52006-03-24 03:18:28 -0800566 kfree(CmdBlkP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567}
568
569/*
570** attach a command block to the list of commands to be performed for
571** a given rup.
572*/
Andrew Morton8d8706e2006-01-11 12:17:49 -0800573int RIOQueueCmdBlk(struct Host *HostP, uint Rup, struct CmdBlk *CmdBlkP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574{
575 struct CmdBlk **Base;
576 struct UnixRup *UnixRupP;
577 unsigned long flags;
578
Alan Cox00d83a52006-03-24 03:18:28 -0800579 if (Rup >= (unsigned short) (MAX_RUP + LINKS_PER_UNIT)) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800580 rio_dprintk(RIO_DEBUG_CMD, "Illegal rup number %d in RIOQueueCmdBlk\n", Rup);
581 RIOFreeCmdBlk(CmdBlkP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 return RIO_FAIL;
583 }
584
585 UnixRupP = &HostP->UnixRups[Rup];
586
587 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
588
589 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800590 ** If the RUP is currently inactive, then put the request
591 ** straight on the RUP....
592 */
Alan Cox00d83a52006-03-24 03:18:28 -0800593 if ((UnixRupP->CmdsWaitingP == NULL) && (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE) && (CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP)
Alan Cox554b7c82006-03-24 03:18:32 -0800594 : 1)) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800595 rio_dprintk(RIO_DEBUG_CMD, "RUP inactive-placing command straight on. Cmd byte is 0x%x\n", CmdBlkP->Packet.data[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
597 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800598 ** Whammy! blat that pack!
599 */
Al Viro92af11c2006-05-27 02:24:14 -0400600 HostP->Copy(&CmdBlkP->Packet, RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->txpkt)), sizeof(struct PKT));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601
602 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800603 ** place command packet on the pending position.
604 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 UnixRupP->CmdPendingP = CmdBlkP;
606
607 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800608 ** set the command register
609 */
Alan Cox00d83a52006-03-24 03:18:28 -0800610 writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611
612 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
613
Alan Cox554b7c82006-03-24 03:18:32 -0800614 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 }
Andrew Morton8d8706e2006-01-11 12:17:49 -0800616 rio_dprintk(RIO_DEBUG_CMD, "RUP active - en-queing\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617
Andrew Morton8d8706e2006-01-11 12:17:49 -0800618 if (UnixRupP->CmdsWaitingP != NULL)
619 rio_dprintk(RIO_DEBUG_CMD, "Rup active - command waiting\n");
620 if (UnixRupP->CmdPendingP != NULL)
621 rio_dprintk(RIO_DEBUG_CMD, "Rup active - command pending\n");
Alan Cox00d83a52006-03-24 03:18:28 -0800622 if (readw(&UnixRupP->RupP->txcontrol) != TX_RUP_INACTIVE)
Andrew Morton8d8706e2006-01-11 12:17:49 -0800623 rio_dprintk(RIO_DEBUG_CMD, "Rup active - command rup not ready\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624
625 Base = &UnixRupP->CmdsWaitingP;
626
Alan Cox554b7c82006-03-24 03:18:32 -0800627 rio_dprintk(RIO_DEBUG_CMD, "First try to queue cmdblk %p at %p\n", CmdBlkP, Base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628
Andrew Morton8d8706e2006-01-11 12:17:49 -0800629 while (*Base) {
Alan Cox554b7c82006-03-24 03:18:32 -0800630 rio_dprintk(RIO_DEBUG_CMD, "Command cmdblk %p here\n", *Base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 Base = &((*Base)->NextP);
Alan Cox554b7c82006-03-24 03:18:32 -0800632 rio_dprintk(RIO_DEBUG_CMD, "Now try to queue cmd cmdblk %p at %p\n", CmdBlkP, Base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633 }
634
Alan Cox554b7c82006-03-24 03:18:32 -0800635 rio_dprintk(RIO_DEBUG_CMD, "Will queue cmdblk %p at %p\n", CmdBlkP, Base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636
637 *Base = CmdBlkP;
638
639 CmdBlkP->NextP = NULL;
640
641 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
642
Alan Cox554b7c82006-03-24 03:18:32 -0800643 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644}
645
646/*
647** Here we go - if there is an empty rup, fill it!
648** must be called at splrio() or higher.
649*/
Andrew Morton8d8706e2006-01-11 12:17:49 -0800650void RIOPollHostCommands(struct rio_info *p, struct Host *HostP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651{
Alan Cox00d83a52006-03-24 03:18:28 -0800652 struct CmdBlk *CmdBlkP;
653 struct UnixRup *UnixRupP;
Al Virod886cb52006-05-27 00:08:25 -0400654 struct PKT __iomem *PacketP;
Alan Cox00d83a52006-03-24 03:18:28 -0800655 unsigned short Rup;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 unsigned long flags;
657
658
Andrew Morton8d8706e2006-01-11 12:17:49 -0800659 Rup = MAX_RUP + LINKS_PER_UNIT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
Andrew Morton8d8706e2006-01-11 12:17:49 -0800661 do { /* do this loop for each RUP */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800663 ** locate the rup we are processing & lock it
664 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 UnixRupP = &HostP->UnixRups[--Rup];
666
667 spin_lock_irqsave(&UnixRupP->RupLock, flags);
668
669 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800670 ** First check for incoming commands:
671 */
Alan Cox00d83a52006-03-24 03:18:28 -0800672 if (readw(&UnixRupP->RupP->rxcontrol) != RX_RUP_INACTIVE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 int FreeMe;
674
Al Virod886cb52006-05-27 00:08:25 -0400675 PacketP = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->rxpkt));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676
Alan Cox00d83a52006-03-24 03:18:28 -0800677 switch (readb(&PacketP->dest_port)) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800678 case BOOT_RUP:
Alan Cox00d83a52006-03-24 03:18:28 -0800679 rio_dprintk(RIO_DEBUG_CMD, "Incoming Boot %s packet '%x'\n", readb(&PacketP->len) & 0x80 ? "Command" : "Data", readb(&PacketP->data[0]));
Andrew Morton8d8706e2006-01-11 12:17:49 -0800680 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
681 FreeMe = RIOBootRup(p, Rup, HostP, PacketP);
682 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
683 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684
Andrew Morton8d8706e2006-01-11 12:17:49 -0800685 case COMMAND_RUP:
686 /*
687 ** Free the RUP lock as loss of carrier causes a
688 ** ttyflush which will (eventually) call another
689 ** routine that uses the RUP lock.
690 */
691 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
692 FreeMe = RIOCommandRup(p, Rup, HostP, PacketP);
Jiri Slabyd6f63412008-04-30 00:53:57 -0700693 if (readb(&PacketP->data[5]) == RIOC_MEMDUMP) {
Al Viro92af11c2006-05-27 02:24:14 -0400694 rio_dprintk(RIO_DEBUG_CMD, "Memdump from 0x%x complete\n", readw(&(PacketP->data[6])));
Al Viro1bf08712006-05-27 01:55:52 -0400695 rio_memcpy_fromio(p->RIOMemDump, &(PacketP->data[8]), 32);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800696 }
697 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
698 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699
Andrew Morton8d8706e2006-01-11 12:17:49 -0800700 case ROUTE_RUP:
701 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
702 FreeMe = RIORouteRup(p, Rup, HostP, PacketP);
703 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
704 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705
Andrew Morton8d8706e2006-01-11 12:17:49 -0800706 default:
Alan Cox00d83a52006-03-24 03:18:28 -0800707 rio_dprintk(RIO_DEBUG_CMD, "Unknown RUP %d\n", readb(&PacketP->dest_port));
Andrew Morton8d8706e2006-01-11 12:17:49 -0800708 FreeMe = 1;
709 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 }
711
Andrew Morton8d8706e2006-01-11 12:17:49 -0800712 if (FreeMe) {
713 rio_dprintk(RIO_DEBUG_CMD, "Free processed incoming command packet\n");
714 put_free_end(HostP, PacketP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
Alan Cox00d83a52006-03-24 03:18:28 -0800716 writew(RX_RUP_INACTIVE, &UnixRupP->RupP->rxcontrol);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
Alan Cox00d83a52006-03-24 03:18:28 -0800718 if (readw(&UnixRupP->RupP->handshake) == PHB_HANDSHAKE_SET) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800719 rio_dprintk(RIO_DEBUG_CMD, "Handshake rup %d\n", Rup);
Alan Cox00d83a52006-03-24 03:18:28 -0800720 writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &UnixRupP->RupP->handshake);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721 }
722 }
723 }
724
725 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800726 ** IF a command was running on the port,
727 ** and it has completed, then tidy it up.
728 */
729 if ((CmdBlkP = UnixRupP->CmdPendingP) && /* ASSIGN! */
Alan Cox00d83a52006-03-24 03:18:28 -0800730 (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800732 ** we are idle.
733 ** there is a command in pending.
734 ** Therefore, this command has finished.
735 ** So, wakeup whoever is waiting for it (and tell them
736 ** what happened).
737 */
738 if (CmdBlkP->Packet.dest_port == BOOT_RUP)
739 rio_dprintk(RIO_DEBUG_CMD, "Free Boot %s Command Block '%x'\n", CmdBlkP->Packet.len & 0x80 ? "Command" : "Data", CmdBlkP->Packet.data[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740
Alan Cox554b7c82006-03-24 03:18:32 -0800741 rio_dprintk(RIO_DEBUG_CMD, "Command %p completed\n", CmdBlkP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742
743 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800744 ** Clear the Rup lock to prevent mutual exclusion.
745 */
746 if (CmdBlkP->PostFuncP) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800748 (*CmdBlkP->PostFuncP) (CmdBlkP->PostArg, CmdBlkP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
750 }
751
752 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800753 ** ....clear the pending flag....
754 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 UnixRupP->CmdPendingP = NULL;
756
757 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800758 ** ....and return the command block to the freelist.
759 */
760 RIOFreeCmdBlk(CmdBlkP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761 }
762
763 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800764 ** If there is a command for this rup, and the rup
765 ** is idle, then process the command
766 */
767 if ((CmdBlkP = UnixRupP->CmdsWaitingP) && /* ASSIGN! */
Alan Cox00d83a52006-03-24 03:18:28 -0800768 (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800770 ** if the pre-function is non-zero, call it.
771 ** If it returns RIO_FAIL then don't
772 ** send this command yet!
773 */
Alan Cox554b7c82006-03-24 03:18:32 -0800774 if (!(CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) : 1)) {
775 rio_dprintk(RIO_DEBUG_CMD, "Not ready to start command %p\n", CmdBlkP);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800776 } else {
Alan Cox554b7c82006-03-24 03:18:32 -0800777 rio_dprintk(RIO_DEBUG_CMD, "Start new command %p Cmd byte is 0x%x\n", CmdBlkP, CmdBlkP->Packet.data[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800779 ** Whammy! blat that pack!
780 */
Al Viro92af11c2006-05-27 02:24:14 -0400781 HostP->Copy(&CmdBlkP->Packet, RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->txpkt)), sizeof(struct PKT));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782
783 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800784 ** remove the command from the rup command queue...
785 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 UnixRupP->CmdsWaitingP = CmdBlkP->NextP;
787
788 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800789 ** ...and place it on the pending position.
790 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 UnixRupP->CmdPendingP = CmdBlkP;
792
793 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800794 ** set the command register
795 */
Alan Cox00d83a52006-03-24 03:18:28 -0800796 writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797
798 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800799 ** the command block will be freed
800 ** when the command has been processed.
801 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 }
803 }
804 spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800805 } while (Rup);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806}
807
Alan Cox00d83a52006-03-24 03:18:28 -0800808int RIOWFlushMark(unsigned long iPortP, struct CmdBlk *CmdBlkP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809{
Andrew Morton8d8706e2006-01-11 12:17:49 -0800810 struct Port *PortP = (struct Port *) iPortP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 unsigned long flags;
812
813 rio_spin_lock_irqsave(&PortP->portSem, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 PortP->WflushFlag++;
815 PortP->MagicFlags |= MAGIC_FLUSH;
816 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800817 return RIOUnUse(iPortP, CmdBlkP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818}
819
Alan Cox00d83a52006-03-24 03:18:28 -0800820int RIORFlushEnable(unsigned long iPortP, struct CmdBlk *CmdBlkP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821{
Andrew Morton8d8706e2006-01-11 12:17:49 -0800822 struct Port *PortP = (struct Port *) iPortP;
Al Virod886cb52006-05-27 00:08:25 -0400823 struct PKT __iomem *PacketP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 unsigned long flags;
825
826 rio_spin_lock_irqsave(&PortP->portSem, flags);
827
Andrew Morton8d8706e2006-01-11 12:17:49 -0800828 while (can_remove_receive(&PacketP, PortP)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829 remove_receive(PortP);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800830 put_free_end(PortP->HostP, PacketP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831 }
832
Alan Cox00d83a52006-03-24 03:18:28 -0800833 if (readw(&PortP->PhbP->handshake) == PHB_HANDSHAKE_SET) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800835 ** MAGIC! (Basically, handshake the RX buffer, so that
836 ** the RTAs upstream can be re-enabled.)
837 */
838 rio_dprintk(RIO_DEBUG_CMD, "Util: Set RX handshake bit\n");
Alan Cox00d83a52006-03-24 03:18:28 -0800839 writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &PortP->PhbP->handshake);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 }
841 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
Andrew Morton8d8706e2006-01-11 12:17:49 -0800842 return RIOUnUse(iPortP, CmdBlkP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843}
844
Alan Cox00d83a52006-03-24 03:18:28 -0800845int RIOUnUse(unsigned long iPortP, struct CmdBlk *CmdBlkP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846{
Andrew Morton8d8706e2006-01-11 12:17:49 -0800847 struct Port *PortP = (struct Port *) iPortP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 unsigned long flags;
849
850 rio_spin_lock_irqsave(&PortP->portSem, flags);
851
Andrew Morton8d8706e2006-01-11 12:17:49 -0800852 rio_dprintk(RIO_DEBUG_CMD, "Decrement in use count for port\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853
854 if (PortP->InUse) {
Andrew Morton8d8706e2006-01-11 12:17:49 -0800855 if (--PortP->InUse != NOT_INUSE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
857 return 0;
858 }
859 }
860 /*
Andrew Morton8d8706e2006-01-11 12:17:49 -0800861 ** While PortP->InUse is set (i.e. a preemptive command has been sent to
862 ** the RTA and is awaiting completion), any transmit data is prevented from
863 ** being transferred from the write queue into the transmit packets
864 ** (add_transmit) and no furthur transmit interrupt will be sent for that
865 ** data. The next interrupt will occur up to 500ms later (RIOIntr is called
866 ** twice a second as a saftey measure). This was the case when kermit was
867 ** used to send data into a RIO port. After each packet was sent, TCFLSH
868 ** was called to flush the read queue preemptively. PortP->InUse was
869 ** incremented, thereby blocking the 6 byte acknowledgement packet
870 ** transmitted back. This acknowledgment hung around for 500ms before
871 ** being sent, thus reducing input performance substantially!.
872 ** When PortP->InUse becomes NOT_INUSE, we must ensure that any data
873 ** hanging around in the transmit buffer is sent immediately.
874 */
Alan Cox00d83a52006-03-24 03:18:28 -0800875 writew(1, &PortP->HostP->ParmMapP->tx_intr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 /* What to do here ..
Andrew Morton8d8706e2006-01-11 12:17:49 -0800877 wakeup( (caddr_t)&(PortP->InUse) );
878 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
880 return 0;
881}
882
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883/*
884**
885** How to use this file:
886**
887** To send a command down a rup, you need to allocate a command block, fill
888** in the packet information, fill in the command number, fill in the pre-
889** and post- functions and arguments, and then add the command block to the
890** queue of command blocks for the port in question. When the port is idle,
891** then the pre-function will be called. If this returns RIO_FAIL then the
892** command will be re-queued and tried again at a later date (probably in one
893** clock tick). If the pre-function returns NOT RIO_FAIL, then the command
894** packet will be queued on the RUP, and the txcontrol field set to the
895** command number. When the txcontrol field has changed from being the
896** command number, then the post-function will be called, with the argument
897** specified earlier, a pointer to the command block, and the value of
898** txcontrol.
899**
900** To allocate a command block, call RIOGetCmdBlk(). This returns a pointer
901** to the command block structure allocated, or NULL if there aren't any.
902** The block will have been zeroed for you.
903**
904** The structure has the following fields:
905**
906** struct CmdBlk
907** {
908** struct CmdBlk *NextP; ** Pointer to next command block **
909** struct PKT Packet; ** A packet, to copy to the rup **
910** int (*PreFuncP)(); ** The func to call to check if OK **
911** int PreArg; ** The arg for the func **
912** int (*PostFuncP)(); ** The func to call when completed **
913** int PostArg; ** The arg for the func **
914** };
915**
916** You need to fill in ALL fields EXCEPT NextP, which is used to link the
917** blocks together either on the free list or on the Rup list.
918**
919** Packet is an actual packet structure to be filled in with the packet
920** information associated with the command. You need to fill in everything,
Matt LaPlante0779bf22006-11-30 05:24:39 +0100921** as the command processor doesn't process the command packet in any way.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922**
923** The PreFuncP is called before the packet is enqueued on the host rup.
924** PreFuncP is called as (*PreFuncP)(PreArg, CmdBlkP);. PreFuncP must
925** return !RIO_FAIL to have the packet queued on the rup, and RIO_FAIL
926** if the packet is NOT to be queued.
927**
928** The PostFuncP is called when the command has completed. It is called
929** as (*PostFuncP)(PostArg, CmdBlkP, txcontrol);. PostFuncP is not expected
930** to return a value. PostFuncP does NOT need to free the command block,
931** as this happens automatically after PostFuncP returns.
932**
933** Once the command block has been filled in, it is attached to the correct
934** queue by calling RIOQueueCmdBlk( HostP, Rup, CmdBlkP ) where HostP is
935** a pointer to the struct Host, Rup is the NUMBER of the rup (NOT a pointer
936** to it!), and CmdBlkP is the pointer to the command block allocated using
937** RIOGetCmdBlk().
938**
939*/