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1da177e4 LT |
1 | /*****************************************************************************/ |
2 | ||
3 | /* | |
4 | * istallion.c -- stallion intelligent multiport serial driver. | |
5 | * | |
6 | * Copyright (C) 1996-1999 Stallion Technologies | |
7 | * Copyright (C) 1994-1996 Greg Ungerer. | |
8 | * | |
9 | * This code is loosely based on the Linux serial driver, written by | |
10 | * Linus Torvalds, Theodore T'so and others. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
27 | /*****************************************************************************/ | |
28 | ||
29 | #include <linux/config.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/tty.h> | |
34 | #include <linux/tty_flip.h> | |
35 | #include <linux/serial.h> | |
36 | #include <linux/cdk.h> | |
37 | #include <linux/comstats.h> | |
38 | #include <linux/istallion.h> | |
39 | #include <linux/ioport.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/init.h> | |
42 | #include <linux/devfs_fs_kernel.h> | |
43 | #include <linux/device.h> | |
44 | #include <linux/wait.h> | |
45 | ||
46 | #include <asm/io.h> | |
47 | #include <asm/uaccess.h> | |
48 | ||
49 | #ifdef CONFIG_PCI | |
50 | #include <linux/pci.h> | |
51 | #endif | |
52 | ||
53 | /*****************************************************************************/ | |
54 | ||
55 | /* | |
56 | * Define different board types. Not all of the following board types | |
57 | * are supported by this driver. But I will use the standard "assigned" | |
58 | * board numbers. Currently supported boards are abbreviated as: | |
59 | * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and | |
60 | * STAL = Stallion. | |
61 | */ | |
62 | #define BRD_UNKNOWN 0 | |
63 | #define BRD_STALLION 1 | |
64 | #define BRD_BRUMBY4 2 | |
65 | #define BRD_ONBOARD2 3 | |
66 | #define BRD_ONBOARD 4 | |
67 | #define BRD_BRUMBY8 5 | |
68 | #define BRD_BRUMBY16 6 | |
69 | #define BRD_ONBOARDE 7 | |
70 | #define BRD_ONBOARD32 9 | |
71 | #define BRD_ONBOARD2_32 10 | |
72 | #define BRD_ONBOARDRS 11 | |
73 | #define BRD_EASYIO 20 | |
74 | #define BRD_ECH 21 | |
75 | #define BRD_ECHMC 22 | |
76 | #define BRD_ECP 23 | |
77 | #define BRD_ECPE 24 | |
78 | #define BRD_ECPMC 25 | |
79 | #define BRD_ECHPCI 26 | |
80 | #define BRD_ECH64PCI 27 | |
81 | #define BRD_EASYIOPCI 28 | |
82 | #define BRD_ECPPCI 29 | |
83 | ||
84 | #define BRD_BRUMBY BRD_BRUMBY4 | |
85 | ||
86 | /* | |
87 | * Define a configuration structure to hold the board configuration. | |
88 | * Need to set this up in the code (for now) with the boards that are | |
89 | * to be configured into the system. This is what needs to be modified | |
90 | * when adding/removing/modifying boards. Each line entry in the | |
91 | * stli_brdconf[] array is a board. Each line contains io/irq/memory | |
92 | * ranges for that board (as well as what type of board it is). | |
93 | * Some examples: | |
94 | * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, | |
95 | * This line will configure an EasyConnection 8/64 at io address 2a0, | |
96 | * and shared memory address of cc000. Multiple EasyConnection 8/64 | |
97 | * boards can share the same shared memory address space. No interrupt | |
98 | * is required for this board type. | |
99 | * Another example: | |
100 | * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, | |
101 | * This line will configure an EasyConnection 8/64 EISA in slot 5 and | |
102 | * shared memory address of 0x80000000 (2 GByte). Multiple | |
103 | * EasyConnection 8/64 EISA boards can share the same shared memory | |
104 | * address space. No interrupt is required for this board type. | |
105 | * Another example: | |
106 | * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, | |
107 | * This line will configure an ONboard (ISA type) at io address 240, | |
108 | * and shared memory address of d0000. Multiple ONboards can share | |
109 | * the same shared memory address space. No interrupt required. | |
110 | * Another example: | |
111 | * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, | |
112 | * This line will configure a Brumby board (any number of ports!) at | |
113 | * io address 360 and shared memory address of c8000. All Brumby boards | |
114 | * configured into a system must have their own separate io and memory | |
115 | * addresses. No interrupt is required. | |
116 | * Another example: | |
117 | * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, | |
118 | * This line will configure an original Stallion board at io address 330 | |
119 | * and shared memory address d0000 (this would only be valid for a "V4.0" | |
120 | * or Rev.O Stallion board). All Stallion boards configured into the | |
121 | * system must have their own separate io and memory addresses. No | |
122 | * interrupt is required. | |
123 | */ | |
124 | ||
125 | typedef struct { | |
126 | int brdtype; | |
127 | int ioaddr1; | |
128 | int ioaddr2; | |
129 | unsigned long memaddr; | |
130 | int irq; | |
131 | int irqtype; | |
132 | } stlconf_t; | |
133 | ||
134 | static stlconf_t stli_brdconf[] = { | |
135 | /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/ | |
136 | }; | |
137 | ||
138 | static int stli_nrbrds = sizeof(stli_brdconf) / sizeof(stlconf_t); | |
139 | ||
140 | /* | |
141 | * There is some experimental EISA board detection code in this driver. | |
142 | * By default it is disabled, but for those that want to try it out, | |
143 | * then set the define below to be 1. | |
144 | */ | |
145 | #define STLI_EISAPROBE 0 | |
146 | ||
147 | /*****************************************************************************/ | |
148 | ||
149 | /* | |
150 | * Define some important driver characteristics. Device major numbers | |
151 | * allocated as per Linux Device Registry. | |
152 | */ | |
153 | #ifndef STL_SIOMEMMAJOR | |
154 | #define STL_SIOMEMMAJOR 28 | |
155 | #endif | |
156 | #ifndef STL_SERIALMAJOR | |
157 | #define STL_SERIALMAJOR 24 | |
158 | #endif | |
159 | #ifndef STL_CALLOUTMAJOR | |
160 | #define STL_CALLOUTMAJOR 25 | |
161 | #endif | |
162 | ||
163 | /*****************************************************************************/ | |
164 | ||
165 | /* | |
166 | * Define our local driver identity first. Set up stuff to deal with | |
167 | * all the local structures required by a serial tty driver. | |
168 | */ | |
169 | static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; | |
170 | static char *stli_drvname = "istallion"; | |
171 | static char *stli_drvversion = "5.6.0"; | |
172 | static char *stli_serialname = "ttyE"; | |
173 | ||
174 | static struct tty_driver *stli_serial; | |
175 | ||
176 | /* | |
177 | * We will need to allocate a temporary write buffer for chars that | |
178 | * come direct from user space. The problem is that a copy from user | |
179 | * space might cause a page fault (typically on a system that is | |
180 | * swapping!). All ports will share one buffer - since if the system | |
181 | * is already swapping a shared buffer won't make things any worse. | |
182 | */ | |
183 | static char *stli_tmpwritebuf; | |
184 | static DECLARE_MUTEX(stli_tmpwritesem); | |
185 | ||
186 | #define STLI_TXBUFSIZE 4096 | |
187 | ||
188 | /* | |
189 | * Use a fast local buffer for cooked characters. Typically a whole | |
190 | * bunch of cooked characters come in for a port, 1 at a time. So we | |
191 | * save those up into a local buffer, then write out the whole lot | |
192 | * with a large memcpy. Just use 1 buffer for all ports, since its | |
193 | * use it is only need for short periods of time by each port. | |
194 | */ | |
195 | static char *stli_txcookbuf; | |
196 | static int stli_txcooksize; | |
197 | static int stli_txcookrealsize; | |
198 | static struct tty_struct *stli_txcooktty; | |
199 | ||
200 | /* | |
201 | * Define a local default termios struct. All ports will be created | |
202 | * with this termios initially. Basically all it defines is a raw port | |
203 | * at 9600 baud, 8 data bits, no parity, 1 stop bit. | |
204 | */ | |
205 | static struct termios stli_deftermios = { | |
206 | .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), | |
207 | .c_cc = INIT_C_CC, | |
208 | }; | |
209 | ||
210 | /* | |
211 | * Define global stats structures. Not used often, and can be | |
212 | * re-used for each stats call. | |
213 | */ | |
214 | static comstats_t stli_comstats; | |
215 | static combrd_t stli_brdstats; | |
216 | static asystats_t stli_cdkstats; | |
217 | static stlibrd_t stli_dummybrd; | |
218 | static stliport_t stli_dummyport; | |
219 | ||
220 | /*****************************************************************************/ | |
221 | ||
222 | static stlibrd_t *stli_brds[STL_MAXBRDS]; | |
223 | ||
224 | static int stli_shared; | |
225 | ||
226 | /* | |
227 | * Per board state flags. Used with the state field of the board struct. | |
228 | * Not really much here... All we need to do is keep track of whether | |
229 | * the board has been detected, and whether it is actually running a slave | |
230 | * or not. | |
231 | */ | |
232 | #define BST_FOUND 0x1 | |
233 | #define BST_STARTED 0x2 | |
234 | ||
235 | /* | |
236 | * Define the set of port state flags. These are marked for internal | |
237 | * state purposes only, usually to do with the state of communications | |
238 | * with the slave. Most of them need to be updated atomically, so always | |
239 | * use the bit setting operations (unless protected by cli/sti). | |
240 | */ | |
241 | #define ST_INITIALIZING 1 | |
242 | #define ST_OPENING 2 | |
243 | #define ST_CLOSING 3 | |
244 | #define ST_CMDING 4 | |
245 | #define ST_TXBUSY 5 | |
246 | #define ST_RXING 6 | |
247 | #define ST_DOFLUSHRX 7 | |
248 | #define ST_DOFLUSHTX 8 | |
249 | #define ST_DOSIGS 9 | |
250 | #define ST_RXSTOP 10 | |
251 | #define ST_GETSIGS 11 | |
252 | ||
253 | /* | |
254 | * Define an array of board names as printable strings. Handy for | |
255 | * referencing boards when printing trace and stuff. | |
256 | */ | |
257 | static char *stli_brdnames[] = { | |
258 | "Unknown", | |
259 | "Stallion", | |
260 | "Brumby", | |
261 | "ONboard-MC", | |
262 | "ONboard", | |
263 | "Brumby", | |
264 | "Brumby", | |
265 | "ONboard-EI", | |
266 | (char *) NULL, | |
267 | "ONboard", | |
268 | "ONboard-MC", | |
269 | "ONboard-MC", | |
270 | (char *) NULL, | |
271 | (char *) NULL, | |
272 | (char *) NULL, | |
273 | (char *) NULL, | |
274 | (char *) NULL, | |
275 | (char *) NULL, | |
276 | (char *) NULL, | |
277 | (char *) NULL, | |
278 | "EasyIO", | |
279 | "EC8/32-AT", | |
280 | "EC8/32-MC", | |
281 | "EC8/64-AT", | |
282 | "EC8/64-EI", | |
283 | "EC8/64-MC", | |
284 | "EC8/32-PCI", | |
285 | "EC8/64-PCI", | |
286 | "EasyIO-PCI", | |
287 | "EC/RA-PCI", | |
288 | }; | |
289 | ||
290 | /*****************************************************************************/ | |
291 | ||
292 | #ifdef MODULE | |
293 | /* | |
294 | * Define some string labels for arguments passed from the module | |
295 | * load line. These allow for easy board definitions, and easy | |
296 | * modification of the io, memory and irq resoucres. | |
297 | */ | |
298 | ||
299 | static char *board0[8]; | |
300 | static char *board1[8]; | |
301 | static char *board2[8]; | |
302 | static char *board3[8]; | |
303 | ||
304 | static char **stli_brdsp[] = { | |
305 | (char **) &board0, | |
306 | (char **) &board1, | |
307 | (char **) &board2, | |
308 | (char **) &board3 | |
309 | }; | |
310 | ||
311 | /* | |
312 | * Define a set of common board names, and types. This is used to | |
313 | * parse any module arguments. | |
314 | */ | |
315 | ||
316 | typedef struct stlibrdtype { | |
317 | char *name; | |
318 | int type; | |
319 | } stlibrdtype_t; | |
320 | ||
321 | static stlibrdtype_t stli_brdstr[] = { | |
322 | { "stallion", BRD_STALLION }, | |
323 | { "1", BRD_STALLION }, | |
324 | { "brumby", BRD_BRUMBY }, | |
325 | { "brumby4", BRD_BRUMBY }, | |
326 | { "brumby/4", BRD_BRUMBY }, | |
327 | { "brumby-4", BRD_BRUMBY }, | |
328 | { "brumby8", BRD_BRUMBY }, | |
329 | { "brumby/8", BRD_BRUMBY }, | |
330 | { "brumby-8", BRD_BRUMBY }, | |
331 | { "brumby16", BRD_BRUMBY }, | |
332 | { "brumby/16", BRD_BRUMBY }, | |
333 | { "brumby-16", BRD_BRUMBY }, | |
334 | { "2", BRD_BRUMBY }, | |
335 | { "onboard2", BRD_ONBOARD2 }, | |
336 | { "onboard-2", BRD_ONBOARD2 }, | |
337 | { "onboard/2", BRD_ONBOARD2 }, | |
338 | { "onboard-mc", BRD_ONBOARD2 }, | |
339 | { "onboard/mc", BRD_ONBOARD2 }, | |
340 | { "onboard-mca", BRD_ONBOARD2 }, | |
341 | { "onboard/mca", BRD_ONBOARD2 }, | |
342 | { "3", BRD_ONBOARD2 }, | |
343 | { "onboard", BRD_ONBOARD }, | |
344 | { "onboardat", BRD_ONBOARD }, | |
345 | { "4", BRD_ONBOARD }, | |
346 | { "onboarde", BRD_ONBOARDE }, | |
347 | { "onboard-e", BRD_ONBOARDE }, | |
348 | { "onboard/e", BRD_ONBOARDE }, | |
349 | { "onboard-ei", BRD_ONBOARDE }, | |
350 | { "onboard/ei", BRD_ONBOARDE }, | |
351 | { "7", BRD_ONBOARDE }, | |
352 | { "ecp", BRD_ECP }, | |
353 | { "ecpat", BRD_ECP }, | |
354 | { "ec8/64", BRD_ECP }, | |
355 | { "ec8/64-at", BRD_ECP }, | |
356 | { "ec8/64-isa", BRD_ECP }, | |
357 | { "23", BRD_ECP }, | |
358 | { "ecpe", BRD_ECPE }, | |
359 | { "ecpei", BRD_ECPE }, | |
360 | { "ec8/64-e", BRD_ECPE }, | |
361 | { "ec8/64-ei", BRD_ECPE }, | |
362 | { "24", BRD_ECPE }, | |
363 | { "ecpmc", BRD_ECPMC }, | |
364 | { "ec8/64-mc", BRD_ECPMC }, | |
365 | { "ec8/64-mca", BRD_ECPMC }, | |
366 | { "25", BRD_ECPMC }, | |
367 | { "ecppci", BRD_ECPPCI }, | |
368 | { "ec/ra", BRD_ECPPCI }, | |
369 | { "ec/ra-pc", BRD_ECPPCI }, | |
370 | { "ec/ra-pci", BRD_ECPPCI }, | |
371 | { "29", BRD_ECPPCI }, | |
372 | }; | |
373 | ||
374 | /* | |
375 | * Define the module agruments. | |
376 | */ | |
377 | MODULE_AUTHOR("Greg Ungerer"); | |
378 | MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); | |
379 | MODULE_LICENSE("GPL"); | |
380 | ||
381 | ||
382 | MODULE_PARM(board0, "1-3s"); | |
383 | MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); | |
384 | MODULE_PARM(board1, "1-3s"); | |
385 | MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); | |
386 | MODULE_PARM(board2, "1-3s"); | |
387 | MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); | |
388 | MODULE_PARM(board3, "1-3s"); | |
389 | MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); | |
390 | ||
391 | #endif | |
392 | ||
393 | /* | |
394 | * Set up a default memory address table for EISA board probing. | |
395 | * The default addresses are all bellow 1Mbyte, which has to be the | |
396 | * case anyway. They should be safe, since we only read values from | |
397 | * them, and interrupts are disabled while we do it. If the higher | |
398 | * memory support is compiled in then we also try probing around | |
399 | * the 1Gb, 2Gb and 3Gb areas as well... | |
400 | */ | |
401 | static unsigned long stli_eisamemprobeaddrs[] = { | |
402 | 0xc0000, 0xd0000, 0xe0000, 0xf0000, | |
403 | 0x80000000, 0x80010000, 0x80020000, 0x80030000, | |
404 | 0x40000000, 0x40010000, 0x40020000, 0x40030000, | |
405 | 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, | |
406 | 0xff000000, 0xff010000, 0xff020000, 0xff030000, | |
407 | }; | |
408 | ||
409 | static int stli_eisamempsize = sizeof(stli_eisamemprobeaddrs) / sizeof(unsigned long); | |
1da177e4 LT |
410 | |
411 | /* | |
412 | * Define the Stallion PCI vendor and device IDs. | |
413 | */ | |
414 | #ifdef CONFIG_PCI | |
415 | #ifndef PCI_VENDOR_ID_STALLION | |
416 | #define PCI_VENDOR_ID_STALLION 0x124d | |
417 | #endif | |
418 | #ifndef PCI_DEVICE_ID_ECRA | |
419 | #define PCI_DEVICE_ID_ECRA 0x0004 | |
420 | #endif | |
421 | ||
422 | static struct pci_device_id istallion_pci_tbl[] = { | |
423 | { PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
424 | { 0 } | |
425 | }; | |
426 | MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); | |
427 | ||
428 | #endif /* CONFIG_PCI */ | |
429 | ||
430 | /*****************************************************************************/ | |
431 | ||
432 | /* | |
433 | * Hardware configuration info for ECP boards. These defines apply | |
434 | * to the directly accessible io ports of the ECP. There is a set of | |
435 | * defines for each ECP board type, ISA, EISA, MCA and PCI. | |
436 | */ | |
437 | #define ECP_IOSIZE 4 | |
438 | ||
439 | #define ECP_MEMSIZE (128 * 1024) | |
440 | #define ECP_PCIMEMSIZE (256 * 1024) | |
441 | ||
442 | #define ECP_ATPAGESIZE (4 * 1024) | |
443 | #define ECP_MCPAGESIZE (4 * 1024) | |
444 | #define ECP_EIPAGESIZE (64 * 1024) | |
445 | #define ECP_PCIPAGESIZE (64 * 1024) | |
446 | ||
447 | #define STL_EISAID 0x8c4e | |
448 | ||
449 | /* | |
450 | * Important defines for the ISA class of ECP board. | |
451 | */ | |
452 | #define ECP_ATIREG 0 | |
453 | #define ECP_ATCONFR 1 | |
454 | #define ECP_ATMEMAR 2 | |
455 | #define ECP_ATMEMPR 3 | |
456 | #define ECP_ATSTOP 0x1 | |
457 | #define ECP_ATINTENAB 0x10 | |
458 | #define ECP_ATENABLE 0x20 | |
459 | #define ECP_ATDISABLE 0x00 | |
460 | #define ECP_ATADDRMASK 0x3f000 | |
461 | #define ECP_ATADDRSHFT 12 | |
462 | ||
463 | /* | |
464 | * Important defines for the EISA class of ECP board. | |
465 | */ | |
466 | #define ECP_EIIREG 0 | |
467 | #define ECP_EIMEMARL 1 | |
468 | #define ECP_EICONFR 2 | |
469 | #define ECP_EIMEMARH 3 | |
470 | #define ECP_EIENABLE 0x1 | |
471 | #define ECP_EIDISABLE 0x0 | |
472 | #define ECP_EISTOP 0x4 | |
473 | #define ECP_EIEDGE 0x00 | |
474 | #define ECP_EILEVEL 0x80 | |
475 | #define ECP_EIADDRMASKL 0x00ff0000 | |
476 | #define ECP_EIADDRSHFTL 16 | |
477 | #define ECP_EIADDRMASKH 0xff000000 | |
478 | #define ECP_EIADDRSHFTH 24 | |
479 | #define ECP_EIBRDENAB 0xc84 | |
480 | ||
481 | #define ECP_EISAID 0x4 | |
482 | ||
483 | /* | |
484 | * Important defines for the Micro-channel class of ECP board. | |
485 | * (It has a lot in common with the ISA boards.) | |
486 | */ | |
487 | #define ECP_MCIREG 0 | |
488 | #define ECP_MCCONFR 1 | |
489 | #define ECP_MCSTOP 0x20 | |
490 | #define ECP_MCENABLE 0x80 | |
491 | #define ECP_MCDISABLE 0x00 | |
492 | ||
493 | /* | |
494 | * Important defines for the PCI class of ECP board. | |
495 | * (It has a lot in common with the other ECP boards.) | |
496 | */ | |
497 | #define ECP_PCIIREG 0 | |
498 | #define ECP_PCICONFR 1 | |
499 | #define ECP_PCISTOP 0x01 | |
500 | ||
501 | /* | |
502 | * Hardware configuration info for ONboard and Brumby boards. These | |
503 | * defines apply to the directly accessible io ports of these boards. | |
504 | */ | |
505 | #define ONB_IOSIZE 16 | |
506 | #define ONB_MEMSIZE (64 * 1024) | |
507 | #define ONB_ATPAGESIZE (64 * 1024) | |
508 | #define ONB_MCPAGESIZE (64 * 1024) | |
509 | #define ONB_EIMEMSIZE (128 * 1024) | |
510 | #define ONB_EIPAGESIZE (64 * 1024) | |
511 | ||
512 | /* | |
513 | * Important defines for the ISA class of ONboard board. | |
514 | */ | |
515 | #define ONB_ATIREG 0 | |
516 | #define ONB_ATMEMAR 1 | |
517 | #define ONB_ATCONFR 2 | |
518 | #define ONB_ATSTOP 0x4 | |
519 | #define ONB_ATENABLE 0x01 | |
520 | #define ONB_ATDISABLE 0x00 | |
521 | #define ONB_ATADDRMASK 0xff0000 | |
522 | #define ONB_ATADDRSHFT 16 | |
523 | ||
524 | #define ONB_MEMENABLO 0 | |
525 | #define ONB_MEMENABHI 0x02 | |
526 | ||
527 | /* | |
528 | * Important defines for the EISA class of ONboard board. | |
529 | */ | |
530 | #define ONB_EIIREG 0 | |
531 | #define ONB_EIMEMARL 1 | |
532 | #define ONB_EICONFR 2 | |
533 | #define ONB_EIMEMARH 3 | |
534 | #define ONB_EIENABLE 0x1 | |
535 | #define ONB_EIDISABLE 0x0 | |
536 | #define ONB_EISTOP 0x4 | |
537 | #define ONB_EIEDGE 0x00 | |
538 | #define ONB_EILEVEL 0x80 | |
539 | #define ONB_EIADDRMASKL 0x00ff0000 | |
540 | #define ONB_EIADDRSHFTL 16 | |
541 | #define ONB_EIADDRMASKH 0xff000000 | |
542 | #define ONB_EIADDRSHFTH 24 | |
543 | #define ONB_EIBRDENAB 0xc84 | |
544 | ||
545 | #define ONB_EISAID 0x1 | |
546 | ||
547 | /* | |
548 | * Important defines for the Brumby boards. They are pretty simple, | |
549 | * there is not much that is programmably configurable. | |
550 | */ | |
551 | #define BBY_IOSIZE 16 | |
552 | #define BBY_MEMSIZE (64 * 1024) | |
553 | #define BBY_PAGESIZE (16 * 1024) | |
554 | ||
555 | #define BBY_ATIREG 0 | |
556 | #define BBY_ATCONFR 1 | |
557 | #define BBY_ATSTOP 0x4 | |
558 | ||
559 | /* | |
560 | * Important defines for the Stallion boards. They are pretty simple, | |
561 | * there is not much that is programmably configurable. | |
562 | */ | |
563 | #define STAL_IOSIZE 16 | |
564 | #define STAL_MEMSIZE (64 * 1024) | |
565 | #define STAL_PAGESIZE (64 * 1024) | |
566 | ||
567 | /* | |
568 | * Define the set of status register values for EasyConnection panels. | |
569 | * The signature will return with the status value for each panel. From | |
570 | * this we can determine what is attached to the board - before we have | |
571 | * actually down loaded any code to it. | |
572 | */ | |
573 | #define ECH_PNLSTATUS 2 | |
574 | #define ECH_PNL16PORT 0x20 | |
575 | #define ECH_PNLIDMASK 0x07 | |
576 | #define ECH_PNLXPID 0x40 | |
577 | #define ECH_PNLINTRPEND 0x80 | |
578 | ||
579 | /* | |
580 | * Define some macros to do things to the board. Even those these boards | |
581 | * are somewhat related there is often significantly different ways of | |
582 | * doing some operation on it (like enable, paging, reset, etc). So each | |
583 | * board class has a set of functions which do the commonly required | |
584 | * operations. The macros below basically just call these functions, | |
585 | * generally checking for a NULL function - which means that the board | |
586 | * needs nothing done to it to achieve this operation! | |
587 | */ | |
588 | #define EBRDINIT(brdp) \ | |
589 | if (brdp->init != NULL) \ | |
590 | (* brdp->init)(brdp) | |
591 | ||
592 | #define EBRDENABLE(brdp) \ | |
593 | if (brdp->enable != NULL) \ | |
594 | (* brdp->enable)(brdp); | |
595 | ||
596 | #define EBRDDISABLE(brdp) \ | |
597 | if (brdp->disable != NULL) \ | |
598 | (* brdp->disable)(brdp); | |
599 | ||
600 | #define EBRDINTR(brdp) \ | |
601 | if (brdp->intr != NULL) \ | |
602 | (* brdp->intr)(brdp); | |
603 | ||
604 | #define EBRDRESET(brdp) \ | |
605 | if (brdp->reset != NULL) \ | |
606 | (* brdp->reset)(brdp); | |
607 | ||
608 | #define EBRDGETMEMPTR(brdp,offset) \ | |
609 | (* brdp->getmemptr)(brdp, offset, __LINE__) | |
610 | ||
611 | /* | |
612 | * Define the maximal baud rate, and the default baud base for ports. | |
613 | */ | |
614 | #define STL_MAXBAUD 460800 | |
615 | #define STL_BAUDBASE 115200 | |
616 | #define STL_CLOSEDELAY (5 * HZ / 10) | |
617 | ||
618 | /*****************************************************************************/ | |
619 | ||
620 | /* | |
621 | * Define macros to extract a brd or port number from a minor number. | |
622 | */ | |
623 | #define MINOR2BRD(min) (((min) & 0xc0) >> 6) | |
624 | #define MINOR2PORT(min) ((min) & 0x3f) | |
625 | ||
626 | /* | |
627 | * Define a baud rate table that converts termios baud rate selector | |
628 | * into the actual baud rate value. All baud rate calculations are based | |
629 | * on the actual baud rate required. | |
630 | */ | |
631 | static unsigned int stli_baudrates[] = { | |
632 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, | |
633 | 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 | |
634 | }; | |
635 | ||
636 | /*****************************************************************************/ | |
637 | ||
638 | /* | |
639 | * Define some handy local macros... | |
640 | */ | |
641 | #undef MIN | |
642 | #define MIN(a,b) (((a) <= (b)) ? (a) : (b)) | |
643 | ||
644 | #undef TOLOWER | |
645 | #define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x)) | |
646 | ||
647 | /*****************************************************************************/ | |
648 | ||
649 | /* | |
650 | * Prototype all functions in this driver! | |
651 | */ | |
652 | ||
653 | #ifdef MODULE | |
654 | static void stli_argbrds(void); | |
655 | static int stli_parsebrd(stlconf_t *confp, char **argp); | |
656 | ||
657 | static unsigned long stli_atol(char *str); | |
658 | #endif | |
659 | ||
660 | int stli_init(void); | |
661 | static int stli_open(struct tty_struct *tty, struct file *filp); | |
662 | static void stli_close(struct tty_struct *tty, struct file *filp); | |
663 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); | |
664 | static void stli_putchar(struct tty_struct *tty, unsigned char ch); | |
665 | static void stli_flushchars(struct tty_struct *tty); | |
666 | static int stli_writeroom(struct tty_struct *tty); | |
667 | static int stli_charsinbuffer(struct tty_struct *tty); | |
668 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); | |
669 | static void stli_settermios(struct tty_struct *tty, struct termios *old); | |
670 | static void stli_throttle(struct tty_struct *tty); | |
671 | static void stli_unthrottle(struct tty_struct *tty); | |
672 | static void stli_stop(struct tty_struct *tty); | |
673 | static void stli_start(struct tty_struct *tty); | |
674 | static void stli_flushbuffer(struct tty_struct *tty); | |
675 | static void stli_breakctl(struct tty_struct *tty, int state); | |
676 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); | |
677 | static void stli_sendxchar(struct tty_struct *tty, char ch); | |
678 | static void stli_hangup(struct tty_struct *tty); | |
679 | static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos); | |
680 | ||
681 | static int stli_brdinit(stlibrd_t *brdp); | |
682 | static int stli_startbrd(stlibrd_t *brdp); | |
683 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); | |
684 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); | |
685 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); | |
686 | static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp); | |
687 | static void stli_poll(unsigned long arg); | |
688 | static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp); | |
689 | static int stli_initopen(stlibrd_t *brdp, stliport_t *portp); | |
690 | static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait); | |
691 | static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait); | |
692 | static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp); | |
693 | static void stli_dohangup(void *arg); | |
694 | static int stli_setport(stliport_t *portp); | |
695 | static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); | |
696 | static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); | |
697 | static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp); | |
698 | static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp); | |
699 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); | |
700 | static long stli_mktiocm(unsigned long sigvalue); | |
701 | static void stli_read(stlibrd_t *brdp, stliport_t *portp); | |
702 | static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp); | |
703 | static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp); | |
704 | static int stli_getbrdstats(combrd_t __user *bp); | |
705 | static int stli_getportstats(stliport_t *portp, comstats_t __user *cp); | |
706 | static int stli_portcmdstats(stliport_t *portp); | |
707 | static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp); | |
708 | static int stli_getportstruct(stliport_t __user *arg); | |
709 | static int stli_getbrdstruct(stlibrd_t __user *arg); | |
710 | static void *stli_memalloc(int len); | |
711 | static stlibrd_t *stli_allocbrd(void); | |
712 | ||
713 | static void stli_ecpinit(stlibrd_t *brdp); | |
714 | static void stli_ecpenable(stlibrd_t *brdp); | |
715 | static void stli_ecpdisable(stlibrd_t *brdp); | |
716 | static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
717 | static void stli_ecpreset(stlibrd_t *brdp); | |
718 | static void stli_ecpintr(stlibrd_t *brdp); | |
719 | static void stli_ecpeiinit(stlibrd_t *brdp); | |
720 | static void stli_ecpeienable(stlibrd_t *brdp); | |
721 | static void stli_ecpeidisable(stlibrd_t *brdp); | |
722 | static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
723 | static void stli_ecpeireset(stlibrd_t *brdp); | |
724 | static void stli_ecpmcenable(stlibrd_t *brdp); | |
725 | static void stli_ecpmcdisable(stlibrd_t *brdp); | |
726 | static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
727 | static void stli_ecpmcreset(stlibrd_t *brdp); | |
728 | static void stli_ecppciinit(stlibrd_t *brdp); | |
729 | static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
730 | static void stli_ecppcireset(stlibrd_t *brdp); | |
731 | ||
732 | static void stli_onbinit(stlibrd_t *brdp); | |
733 | static void stli_onbenable(stlibrd_t *brdp); | |
734 | static void stli_onbdisable(stlibrd_t *brdp); | |
735 | static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
736 | static void stli_onbreset(stlibrd_t *brdp); | |
737 | static void stli_onbeinit(stlibrd_t *brdp); | |
738 | static void stli_onbeenable(stlibrd_t *brdp); | |
739 | static void stli_onbedisable(stlibrd_t *brdp); | |
740 | static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
741 | static void stli_onbereset(stlibrd_t *brdp); | |
742 | static void stli_bbyinit(stlibrd_t *brdp); | |
743 | static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
744 | static void stli_bbyreset(stlibrd_t *brdp); | |
745 | static void stli_stalinit(stlibrd_t *brdp); | |
746 | static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
747 | static void stli_stalreset(stlibrd_t *brdp); | |
748 | ||
749 | static stliport_t *stli_getport(int brdnr, int panelnr, int portnr); | |
750 | ||
751 | static int stli_initecp(stlibrd_t *brdp); | |
752 | static int stli_initonb(stlibrd_t *brdp); | |
753 | static int stli_eisamemprobe(stlibrd_t *brdp); | |
754 | static int stli_initports(stlibrd_t *brdp); | |
755 | ||
756 | #ifdef CONFIG_PCI | |
757 | static int stli_initpcibrd(int brdtype, struct pci_dev *devp); | |
758 | #endif | |
759 | ||
760 | /*****************************************************************************/ | |
761 | ||
762 | /* | |
763 | * Define the driver info for a user level shared memory device. This | |
764 | * device will work sort of like the /dev/kmem device - except that it | |
765 | * will give access to the shared memory on the Stallion intelligent | |
766 | * board. This is also a very useful debugging tool. | |
767 | */ | |
768 | static struct file_operations stli_fsiomem = { | |
769 | .owner = THIS_MODULE, | |
770 | .read = stli_memread, | |
771 | .write = stli_memwrite, | |
772 | .ioctl = stli_memioctl, | |
773 | }; | |
774 | ||
775 | /*****************************************************************************/ | |
776 | ||
777 | /* | |
778 | * Define a timer_list entry for our poll routine. The slave board | |
779 | * is polled every so often to see if anything needs doing. This is | |
780 | * much cheaper on host cpu than using interrupts. It turns out to | |
781 | * not increase character latency by much either... | |
782 | */ | |
8d06afab | 783 | static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); |
1da177e4 LT |
784 | |
785 | static int stli_timeron; | |
786 | ||
787 | /* | |
788 | * Define the calculation for the timeout routine. | |
789 | */ | |
790 | #define STLI_TIMEOUT (jiffies + 1) | |
791 | ||
792 | /*****************************************************************************/ | |
793 | ||
ca8eca68 | 794 | static struct class *istallion_class; |
1da177e4 LT |
795 | |
796 | #ifdef MODULE | |
797 | ||
798 | /* | |
799 | * Loadable module initialization stuff. | |
800 | */ | |
801 | ||
802 | static int __init istallion_module_init(void) | |
803 | { | |
804 | unsigned long flags; | |
805 | ||
806 | #ifdef DEBUG | |
807 | printk("init_module()\n"); | |
808 | #endif | |
809 | ||
810 | save_flags(flags); | |
811 | cli(); | |
812 | stli_init(); | |
813 | restore_flags(flags); | |
814 | ||
815 | return(0); | |
816 | } | |
817 | ||
818 | /*****************************************************************************/ | |
819 | ||
820 | static void __exit istallion_module_exit(void) | |
821 | { | |
822 | stlibrd_t *brdp; | |
823 | stliport_t *portp; | |
824 | unsigned long flags; | |
825 | int i, j; | |
826 | ||
827 | #ifdef DEBUG | |
828 | printk("cleanup_module()\n"); | |
829 | #endif | |
830 | ||
831 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, | |
832 | stli_drvversion); | |
833 | ||
834 | save_flags(flags); | |
835 | cli(); | |
836 | ||
837 | /* | |
838 | * Free up all allocated resources used by the ports. This includes | |
839 | * memory and interrupts. | |
840 | */ | |
841 | if (stli_timeron) { | |
842 | stli_timeron = 0; | |
843 | del_timer(&stli_timerlist); | |
844 | } | |
845 | ||
846 | i = tty_unregister_driver(stli_serial); | |
847 | if (i) { | |
848 | printk("STALLION: failed to un-register tty driver, " | |
849 | "errno=%d\n", -i); | |
850 | restore_flags(flags); | |
851 | return; | |
852 | } | |
853 | put_tty_driver(stli_serial); | |
854 | for (i = 0; i < 4; i++) { | |
855 | devfs_remove("staliomem/%d", i); | |
ca8eca68 | 856 | class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, i)); |
1da177e4 LT |
857 | } |
858 | devfs_remove("staliomem"); | |
ca8eca68 | 859 | class_destroy(istallion_class); |
1da177e4 LT |
860 | if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) |
861 | printk("STALLION: failed to un-register serial memory device, " | |
862 | "errno=%d\n", -i); | |
863 | if (stli_tmpwritebuf != (char *) NULL) | |
864 | kfree(stli_tmpwritebuf); | |
865 | if (stli_txcookbuf != (char *) NULL) | |
866 | kfree(stli_txcookbuf); | |
867 | ||
868 | for (i = 0; (i < stli_nrbrds); i++) { | |
869 | if ((brdp = stli_brds[i]) == (stlibrd_t *) NULL) | |
870 | continue; | |
871 | for (j = 0; (j < STL_MAXPORTS); j++) { | |
872 | portp = brdp->ports[j]; | |
873 | if (portp != (stliport_t *) NULL) { | |
874 | if (portp->tty != (struct tty_struct *) NULL) | |
875 | tty_hangup(portp->tty); | |
876 | kfree(portp); | |
877 | } | |
878 | } | |
879 | ||
880 | iounmap(brdp->membase); | |
881 | if (brdp->iosize > 0) | |
882 | release_region(brdp->iobase, brdp->iosize); | |
883 | kfree(brdp); | |
884 | stli_brds[i] = (stlibrd_t *) NULL; | |
885 | } | |
886 | ||
887 | restore_flags(flags); | |
888 | } | |
889 | ||
890 | module_init(istallion_module_init); | |
891 | module_exit(istallion_module_exit); | |
892 | ||
893 | /*****************************************************************************/ | |
894 | ||
895 | /* | |
896 | * Check for any arguments passed in on the module load command line. | |
897 | */ | |
898 | ||
899 | static void stli_argbrds(void) | |
900 | { | |
901 | stlconf_t conf; | |
902 | stlibrd_t *brdp; | |
903 | int nrargs, i; | |
904 | ||
905 | #ifdef DEBUG | |
906 | printk("stli_argbrds()\n"); | |
907 | #endif | |
908 | ||
909 | nrargs = sizeof(stli_brdsp) / sizeof(char **); | |
910 | ||
911 | for (i = stli_nrbrds; (i < nrargs); i++) { | |
912 | memset(&conf, 0, sizeof(conf)); | |
913 | if (stli_parsebrd(&conf, stli_brdsp[i]) == 0) | |
914 | continue; | |
915 | if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) | |
916 | continue; | |
917 | stli_nrbrds = i + 1; | |
918 | brdp->brdnr = i; | |
919 | brdp->brdtype = conf.brdtype; | |
920 | brdp->iobase = conf.ioaddr1; | |
921 | brdp->memaddr = conf.memaddr; | |
922 | stli_brdinit(brdp); | |
923 | } | |
924 | } | |
925 | ||
926 | /*****************************************************************************/ | |
927 | ||
928 | /* | |
929 | * Convert an ascii string number into an unsigned long. | |
930 | */ | |
931 | ||
932 | static unsigned long stli_atol(char *str) | |
933 | { | |
934 | unsigned long val; | |
935 | int base, c; | |
936 | char *sp; | |
937 | ||
938 | val = 0; | |
939 | sp = str; | |
940 | if ((*sp == '0') && (*(sp+1) == 'x')) { | |
941 | base = 16; | |
942 | sp += 2; | |
943 | } else if (*sp == '0') { | |
944 | base = 8; | |
945 | sp++; | |
946 | } else { | |
947 | base = 10; | |
948 | } | |
949 | ||
950 | for (; (*sp != 0); sp++) { | |
951 | c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0'); | |
952 | if ((c < 0) || (c >= base)) { | |
953 | printk("STALLION: invalid argument %s\n", str); | |
954 | val = 0; | |
955 | break; | |
956 | } | |
957 | val = (val * base) + c; | |
958 | } | |
959 | return(val); | |
960 | } | |
961 | ||
962 | /*****************************************************************************/ | |
963 | ||
964 | /* | |
965 | * Parse the supplied argument string, into the board conf struct. | |
966 | */ | |
967 | ||
968 | static int stli_parsebrd(stlconf_t *confp, char **argp) | |
969 | { | |
970 | char *sp; | |
971 | int nrbrdnames, i; | |
972 | ||
973 | #ifdef DEBUG | |
974 | printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp); | |
975 | #endif | |
976 | ||
977 | if ((argp[0] == (char *) NULL) || (*argp[0] == 0)) | |
978 | return(0); | |
979 | ||
980 | for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) | |
981 | *sp = TOLOWER(*sp); | |
982 | ||
983 | nrbrdnames = sizeof(stli_brdstr) / sizeof(stlibrdtype_t); | |
984 | for (i = 0; (i < nrbrdnames); i++) { | |
985 | if (strcmp(stli_brdstr[i].name, argp[0]) == 0) | |
986 | break; | |
987 | } | |
988 | if (i >= nrbrdnames) { | |
989 | printk("STALLION: unknown board name, %s?\n", argp[0]); | |
990 | return(0); | |
991 | } | |
992 | ||
993 | confp->brdtype = stli_brdstr[i].type; | |
994 | if ((argp[1] != (char *) NULL) && (*argp[1] != 0)) | |
995 | confp->ioaddr1 = stli_atol(argp[1]); | |
996 | if ((argp[2] != (char *) NULL) && (*argp[2] != 0)) | |
997 | confp->memaddr = stli_atol(argp[2]); | |
998 | return(1); | |
999 | } | |
1000 | ||
1001 | #endif | |
1002 | ||
1003 | /*****************************************************************************/ | |
1004 | ||
1005 | /* | |
1006 | * Local driver kernel malloc routine. | |
1007 | */ | |
1008 | ||
1009 | static void *stli_memalloc(int len) | |
1010 | { | |
1011 | return((void *) kmalloc(len, GFP_KERNEL)); | |
1012 | } | |
1013 | ||
1014 | /*****************************************************************************/ | |
1015 | ||
1016 | static int stli_open(struct tty_struct *tty, struct file *filp) | |
1017 | { | |
1018 | stlibrd_t *brdp; | |
1019 | stliport_t *portp; | |
1020 | unsigned int minordev; | |
1021 | int brdnr, portnr, rc; | |
1022 | ||
1023 | #ifdef DEBUG | |
1024 | printk("stli_open(tty=%x,filp=%x): device=%s\n", (int) tty, | |
1025 | (int) filp, tty->name); | |
1026 | #endif | |
1027 | ||
1028 | minordev = tty->index; | |
1029 | brdnr = MINOR2BRD(minordev); | |
1030 | if (brdnr >= stli_nrbrds) | |
1031 | return(-ENODEV); | |
1032 | brdp = stli_brds[brdnr]; | |
1033 | if (brdp == (stlibrd_t *) NULL) | |
1034 | return(-ENODEV); | |
1035 | if ((brdp->state & BST_STARTED) == 0) | |
1036 | return(-ENODEV); | |
1037 | portnr = MINOR2PORT(minordev); | |
1038 | if ((portnr < 0) || (portnr > brdp->nrports)) | |
1039 | return(-ENODEV); | |
1040 | ||
1041 | portp = brdp->ports[portnr]; | |
1042 | if (portp == (stliport_t *) NULL) | |
1043 | return(-ENODEV); | |
1044 | if (portp->devnr < 1) | |
1045 | return(-ENODEV); | |
1046 | ||
1047 | ||
1048 | /* | |
1049 | * Check if this port is in the middle of closing. If so then wait | |
1050 | * until it is closed then return error status based on flag settings. | |
1051 | * The sleep here does not need interrupt protection since the wakeup | |
1052 | * for it is done with the same context. | |
1053 | */ | |
1054 | if (portp->flags & ASYNC_CLOSING) { | |
1055 | interruptible_sleep_on(&portp->close_wait); | |
1056 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
1057 | return(-EAGAIN); | |
1058 | return(-ERESTARTSYS); | |
1059 | } | |
1060 | ||
1061 | /* | |
1062 | * On the first open of the device setup the port hardware, and | |
1063 | * initialize the per port data structure. Since initializing the port | |
1064 | * requires several commands to the board we will need to wait for any | |
1065 | * other open that is already initializing the port. | |
1066 | */ | |
1067 | portp->tty = tty; | |
1068 | tty->driver_data = portp; | |
1069 | portp->refcount++; | |
1070 | ||
1071 | wait_event_interruptible(portp->raw_wait, | |
1072 | !test_bit(ST_INITIALIZING, &portp->state)); | |
1073 | if (signal_pending(current)) | |
1074 | return(-ERESTARTSYS); | |
1075 | ||
1076 | if ((portp->flags & ASYNC_INITIALIZED) == 0) { | |
1077 | set_bit(ST_INITIALIZING, &portp->state); | |
1078 | if ((rc = stli_initopen(brdp, portp)) >= 0) { | |
1079 | portp->flags |= ASYNC_INITIALIZED; | |
1080 | clear_bit(TTY_IO_ERROR, &tty->flags); | |
1081 | } | |
1082 | clear_bit(ST_INITIALIZING, &portp->state); | |
1083 | wake_up_interruptible(&portp->raw_wait); | |
1084 | if (rc < 0) | |
1085 | return(rc); | |
1086 | } | |
1087 | ||
1088 | /* | |
1089 | * Check if this port is in the middle of closing. If so then wait | |
1090 | * until it is closed then return error status, based on flag settings. | |
1091 | * The sleep here does not need interrupt protection since the wakeup | |
1092 | * for it is done with the same context. | |
1093 | */ | |
1094 | if (portp->flags & ASYNC_CLOSING) { | |
1095 | interruptible_sleep_on(&portp->close_wait); | |
1096 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
1097 | return(-EAGAIN); | |
1098 | return(-ERESTARTSYS); | |
1099 | } | |
1100 | ||
1101 | /* | |
1102 | * Based on type of open being done check if it can overlap with any | |
1103 | * previous opens still in effect. If we are a normal serial device | |
1104 | * then also we might have to wait for carrier. | |
1105 | */ | |
1106 | if (!(filp->f_flags & O_NONBLOCK)) { | |
1107 | if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0) | |
1108 | return(rc); | |
1109 | } | |
1110 | portp->flags |= ASYNC_NORMAL_ACTIVE; | |
1111 | return(0); | |
1112 | } | |
1113 | ||
1114 | /*****************************************************************************/ | |
1115 | ||
1116 | static void stli_close(struct tty_struct *tty, struct file *filp) | |
1117 | { | |
1118 | stlibrd_t *brdp; | |
1119 | stliport_t *portp; | |
1120 | unsigned long flags; | |
1121 | ||
1122 | #ifdef DEBUG | |
1123 | printk("stli_close(tty=%x,filp=%x)\n", (int) tty, (int) filp); | |
1124 | #endif | |
1125 | ||
1126 | portp = tty->driver_data; | |
1127 | if (portp == (stliport_t *) NULL) | |
1128 | return; | |
1129 | ||
1130 | save_flags(flags); | |
1131 | cli(); | |
1132 | if (tty_hung_up_p(filp)) { | |
1133 | restore_flags(flags); | |
1134 | return; | |
1135 | } | |
1136 | if ((tty->count == 1) && (portp->refcount != 1)) | |
1137 | portp->refcount = 1; | |
1138 | if (portp->refcount-- > 1) { | |
1139 | restore_flags(flags); | |
1140 | return; | |
1141 | } | |
1142 | ||
1143 | portp->flags |= ASYNC_CLOSING; | |
1144 | ||
1145 | /* | |
1146 | * May want to wait for data to drain before closing. The BUSY flag | |
1147 | * keeps track of whether we are still transmitting or not. It is | |
1148 | * updated by messages from the slave - indicating when all chars | |
1149 | * really have drained. | |
1150 | */ | |
1151 | if (tty == stli_txcooktty) | |
1152 | stli_flushchars(tty); | |
1153 | tty->closing = 1; | |
1154 | if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE) | |
1155 | tty_wait_until_sent(tty, portp->closing_wait); | |
1156 | ||
1157 | portp->flags &= ~ASYNC_INITIALIZED; | |
1158 | brdp = stli_brds[portp->brdnr]; | |
1159 | stli_rawclose(brdp, portp, 0, 0); | |
1160 | if (tty->termios->c_cflag & HUPCL) { | |
1161 | stli_mkasysigs(&portp->asig, 0, 0); | |
1162 | if (test_bit(ST_CMDING, &portp->state)) | |
1163 | set_bit(ST_DOSIGS, &portp->state); | |
1164 | else | |
1165 | stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1166 | sizeof(asysigs_t), 0); | |
1167 | } | |
1168 | clear_bit(ST_TXBUSY, &portp->state); | |
1169 | clear_bit(ST_RXSTOP, &portp->state); | |
1170 | set_bit(TTY_IO_ERROR, &tty->flags); | |
1171 | if (tty->ldisc.flush_buffer) | |
1172 | (tty->ldisc.flush_buffer)(tty); | |
1173 | set_bit(ST_DOFLUSHRX, &portp->state); | |
1174 | stli_flushbuffer(tty); | |
1175 | ||
1176 | tty->closing = 0; | |
1177 | portp->tty = (struct tty_struct *) NULL; | |
1178 | ||
1179 | if (portp->openwaitcnt) { | |
1180 | if (portp->close_delay) | |
1181 | msleep_interruptible(jiffies_to_msecs(portp->close_delay)); | |
1182 | wake_up_interruptible(&portp->open_wait); | |
1183 | } | |
1184 | ||
1185 | portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
1186 | wake_up_interruptible(&portp->close_wait); | |
1187 | restore_flags(flags); | |
1188 | } | |
1189 | ||
1190 | /*****************************************************************************/ | |
1191 | ||
1192 | /* | |
1193 | * Carry out first open operations on a port. This involves a number of | |
1194 | * commands to be sent to the slave. We need to open the port, set the | |
1195 | * notification events, set the initial port settings, get and set the | |
1196 | * initial signal values. We sleep and wait in between each one. But | |
1197 | * this still all happens pretty quickly. | |
1198 | */ | |
1199 | ||
1200 | static int stli_initopen(stlibrd_t *brdp, stliport_t *portp) | |
1201 | { | |
1202 | struct tty_struct *tty; | |
1203 | asynotify_t nt; | |
1204 | asyport_t aport; | |
1205 | int rc; | |
1206 | ||
1207 | #ifdef DEBUG | |
1208 | printk("stli_initopen(brdp=%x,portp=%x)\n", (int) brdp, (int) portp); | |
1209 | #endif | |
1210 | ||
1211 | if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) | |
1212 | return(rc); | |
1213 | ||
1214 | memset(&nt, 0, sizeof(asynotify_t)); | |
1215 | nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); | |
1216 | nt.signal = SG_DCD; | |
1217 | if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, | |
1218 | sizeof(asynotify_t), 0)) < 0) | |
1219 | return(rc); | |
1220 | ||
1221 | tty = portp->tty; | |
1222 | if (tty == (struct tty_struct *) NULL) | |
1223 | return(-ENODEV); | |
1224 | stli_mkasyport(portp, &aport, tty->termios); | |
1225 | if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, | |
1226 | sizeof(asyport_t), 0)) < 0) | |
1227 | return(rc); | |
1228 | ||
1229 | set_bit(ST_GETSIGS, &portp->state); | |
1230 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, | |
1231 | sizeof(asysigs_t), 1)) < 0) | |
1232 | return(rc); | |
1233 | if (test_and_clear_bit(ST_GETSIGS, &portp->state)) | |
1234 | portp->sigs = stli_mktiocm(portp->asig.sigvalue); | |
1235 | stli_mkasysigs(&portp->asig, 1, 1); | |
1236 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1237 | sizeof(asysigs_t), 0)) < 0) | |
1238 | return(rc); | |
1239 | ||
1240 | return(0); | |
1241 | } | |
1242 | ||
1243 | /*****************************************************************************/ | |
1244 | ||
1245 | /* | |
1246 | * Send an open message to the slave. This will sleep waiting for the | |
1247 | * acknowledgement, so must have user context. We need to co-ordinate | |
1248 | * with close events here, since we don't want open and close events | |
1249 | * to overlap. | |
1250 | */ | |
1251 | ||
1252 | static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait) | |
1253 | { | |
1254 | volatile cdkhdr_t *hdrp; | |
1255 | volatile cdkctrl_t *cp; | |
1256 | volatile unsigned char *bits; | |
1257 | unsigned long flags; | |
1258 | int rc; | |
1259 | ||
1260 | #ifdef DEBUG | |
1261 | printk("stli_rawopen(brdp=%x,portp=%x,arg=%x,wait=%d)\n", | |
1262 | (int) brdp, (int) portp, (int) arg, wait); | |
1263 | #endif | |
1264 | ||
1265 | /* | |
1266 | * Send a message to the slave to open this port. | |
1267 | */ | |
1268 | save_flags(flags); | |
1269 | cli(); | |
1270 | ||
1271 | /* | |
1272 | * Slave is already closing this port. This can happen if a hangup | |
1273 | * occurs on this port. So we must wait until it is complete. The | |
1274 | * order of opens and closes may not be preserved across shared | |
1275 | * memory, so we must wait until it is complete. | |
1276 | */ | |
1277 | wait_event_interruptible(portp->raw_wait, | |
1278 | !test_bit(ST_CLOSING, &portp->state)); | |
1279 | if (signal_pending(current)) { | |
1280 | restore_flags(flags); | |
1281 | return -ERESTARTSYS; | |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | * Everything is ready now, so write the open message into shared | |
1286 | * memory. Once the message is in set the service bits to say that | |
1287 | * this port wants service. | |
1288 | */ | |
1289 | EBRDENABLE(brdp); | |
1290 | cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; | |
1291 | cp->openarg = arg; | |
1292 | cp->open = 1; | |
1293 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1294 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + | |
1295 | portp->portidx; | |
1296 | *bits |= portp->portbit; | |
1297 | EBRDDISABLE(brdp); | |
1298 | ||
1299 | if (wait == 0) { | |
1300 | restore_flags(flags); | |
1301 | return(0); | |
1302 | } | |
1303 | ||
1304 | /* | |
1305 | * Slave is in action, so now we must wait for the open acknowledgment | |
1306 | * to come back. | |
1307 | */ | |
1308 | rc = 0; | |
1309 | set_bit(ST_OPENING, &portp->state); | |
1310 | wait_event_interruptible(portp->raw_wait, | |
1311 | !test_bit(ST_OPENING, &portp->state)); | |
1312 | if (signal_pending(current)) | |
1313 | rc = -ERESTARTSYS; | |
1314 | restore_flags(flags); | |
1315 | ||
1316 | if ((rc == 0) && (portp->rc != 0)) | |
1317 | rc = -EIO; | |
1318 | return(rc); | |
1319 | } | |
1320 | ||
1321 | /*****************************************************************************/ | |
1322 | ||
1323 | /* | |
1324 | * Send a close message to the slave. Normally this will sleep waiting | |
1325 | * for the acknowledgement, but if wait parameter is 0 it will not. If | |
1326 | * wait is true then must have user context (to sleep). | |
1327 | */ | |
1328 | ||
1329 | static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait) | |
1330 | { | |
1331 | volatile cdkhdr_t *hdrp; | |
1332 | volatile cdkctrl_t *cp; | |
1333 | volatile unsigned char *bits; | |
1334 | unsigned long flags; | |
1335 | int rc; | |
1336 | ||
1337 | #ifdef DEBUG | |
1338 | printk("stli_rawclose(brdp=%x,portp=%x,arg=%x,wait=%d)\n", | |
1339 | (int) brdp, (int) portp, (int) arg, wait); | |
1340 | #endif | |
1341 | ||
1342 | save_flags(flags); | |
1343 | cli(); | |
1344 | ||
1345 | /* | |
1346 | * Slave is already closing this port. This can happen if a hangup | |
1347 | * occurs on this port. | |
1348 | */ | |
1349 | if (wait) { | |
1350 | wait_event_interruptible(portp->raw_wait, | |
1351 | !test_bit(ST_CLOSING, &portp->state)); | |
1352 | if (signal_pending(current)) { | |
1353 | restore_flags(flags); | |
1354 | return -ERESTARTSYS; | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | /* | |
1359 | * Write the close command into shared memory. | |
1360 | */ | |
1361 | EBRDENABLE(brdp); | |
1362 | cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; | |
1363 | cp->closearg = arg; | |
1364 | cp->close = 1; | |
1365 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1366 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + | |
1367 | portp->portidx; | |
1368 | *bits |= portp->portbit; | |
1369 | EBRDDISABLE(brdp); | |
1370 | ||
1371 | set_bit(ST_CLOSING, &portp->state); | |
1372 | if (wait == 0) { | |
1373 | restore_flags(flags); | |
1374 | return(0); | |
1375 | } | |
1376 | ||
1377 | /* | |
1378 | * Slave is in action, so now we must wait for the open acknowledgment | |
1379 | * to come back. | |
1380 | */ | |
1381 | rc = 0; | |
1382 | wait_event_interruptible(portp->raw_wait, | |
1383 | !test_bit(ST_CLOSING, &portp->state)); | |
1384 | if (signal_pending(current)) | |
1385 | rc = -ERESTARTSYS; | |
1386 | restore_flags(flags); | |
1387 | ||
1388 | if ((rc == 0) && (portp->rc != 0)) | |
1389 | rc = -EIO; | |
1390 | return(rc); | |
1391 | } | |
1392 | ||
1393 | /*****************************************************************************/ | |
1394 | ||
1395 | /* | |
1396 | * Send a command to the slave and wait for the response. This must | |
1397 | * have user context (it sleeps). This routine is generic in that it | |
1398 | * can send any type of command. Its purpose is to wait for that command | |
1399 | * to complete (as opposed to initiating the command then returning). | |
1400 | */ | |
1401 | ||
1402 | static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) | |
1403 | { | |
1404 | unsigned long flags; | |
1405 | ||
1406 | #ifdef DEBUG | |
1407 | printk("stli_cmdwait(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d," | |
1408 | "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd, | |
1409 | (int) arg, size, copyback); | |
1410 | #endif | |
1411 | ||
1412 | save_flags(flags); | |
1413 | cli(); | |
1414 | wait_event_interruptible(portp->raw_wait, | |
1415 | !test_bit(ST_CMDING, &portp->state)); | |
1416 | if (signal_pending(current)) { | |
1417 | restore_flags(flags); | |
1418 | return -ERESTARTSYS; | |
1419 | } | |
1420 | ||
1421 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
1422 | ||
1423 | wait_event_interruptible(portp->raw_wait, | |
1424 | !test_bit(ST_CMDING, &portp->state)); | |
1425 | if (signal_pending(current)) { | |
1426 | restore_flags(flags); | |
1427 | return -ERESTARTSYS; | |
1428 | } | |
1429 | restore_flags(flags); | |
1430 | ||
1431 | if (portp->rc != 0) | |
1432 | return(-EIO); | |
1433 | return(0); | |
1434 | } | |
1435 | ||
1436 | /*****************************************************************************/ | |
1437 | ||
1438 | /* | |
1439 | * Send the termios settings for this port to the slave. This sleeps | |
1440 | * waiting for the command to complete - so must have user context. | |
1441 | */ | |
1442 | ||
1443 | static int stli_setport(stliport_t *portp) | |
1444 | { | |
1445 | stlibrd_t *brdp; | |
1446 | asyport_t aport; | |
1447 | ||
1448 | #ifdef DEBUG | |
1449 | printk("stli_setport(portp=%x)\n", (int) portp); | |
1450 | #endif | |
1451 | ||
1452 | if (portp == (stliport_t *) NULL) | |
1453 | return(-ENODEV); | |
1454 | if (portp->tty == (struct tty_struct *) NULL) | |
1455 | return(-ENODEV); | |
1456 | if ((portp->brdnr < 0) && (portp->brdnr >= stli_nrbrds)) | |
1457 | return(-ENODEV); | |
1458 | brdp = stli_brds[portp->brdnr]; | |
1459 | if (brdp == (stlibrd_t *) NULL) | |
1460 | return(-ENODEV); | |
1461 | ||
1462 | stli_mkasyport(portp, &aport, portp->tty->termios); | |
1463 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); | |
1464 | } | |
1465 | ||
1466 | /*****************************************************************************/ | |
1467 | ||
1468 | /* | |
1469 | * Possibly need to wait for carrier (DCD signal) to come high. Say | |
1470 | * maybe because if we are clocal then we don't need to wait... | |
1471 | */ | |
1472 | ||
1473 | static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp) | |
1474 | { | |
1475 | unsigned long flags; | |
1476 | int rc, doclocal; | |
1477 | ||
1478 | #ifdef DEBUG | |
1479 | printk("stli_waitcarrier(brdp=%x,portp=%x,filp=%x)\n", | |
1480 | (int) brdp, (int) portp, (int) filp); | |
1481 | #endif | |
1482 | ||
1483 | rc = 0; | |
1484 | doclocal = 0; | |
1485 | ||
1486 | if (portp->tty->termios->c_cflag & CLOCAL) | |
1487 | doclocal++; | |
1488 | ||
1489 | save_flags(flags); | |
1490 | cli(); | |
1491 | portp->openwaitcnt++; | |
1492 | if (! tty_hung_up_p(filp)) | |
1493 | portp->refcount--; | |
1494 | ||
1495 | for (;;) { | |
1496 | stli_mkasysigs(&portp->asig, 1, 1); | |
1497 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, | |
1498 | &portp->asig, sizeof(asysigs_t), 0)) < 0) | |
1499 | break; | |
1500 | if (tty_hung_up_p(filp) || | |
1501 | ((portp->flags & ASYNC_INITIALIZED) == 0)) { | |
1502 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
1503 | rc = -EBUSY; | |
1504 | else | |
1505 | rc = -ERESTARTSYS; | |
1506 | break; | |
1507 | } | |
1508 | if (((portp->flags & ASYNC_CLOSING) == 0) && | |
1509 | (doclocal || (portp->sigs & TIOCM_CD))) { | |
1510 | break; | |
1511 | } | |
1512 | if (signal_pending(current)) { | |
1513 | rc = -ERESTARTSYS; | |
1514 | break; | |
1515 | } | |
1516 | interruptible_sleep_on(&portp->open_wait); | |
1517 | } | |
1518 | ||
1519 | if (! tty_hung_up_p(filp)) | |
1520 | portp->refcount++; | |
1521 | portp->openwaitcnt--; | |
1522 | restore_flags(flags); | |
1523 | ||
1524 | return(rc); | |
1525 | } | |
1526 | ||
1527 | /*****************************************************************************/ | |
1528 | ||
1529 | /* | |
1530 | * Write routine. Take the data and put it in the shared memory ring | |
1531 | * queue. If port is not already sending chars then need to mark the | |
1532 | * service bits for this port. | |
1533 | */ | |
1534 | ||
1535 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1536 | { | |
1537 | volatile cdkasy_t *ap; | |
1538 | volatile cdkhdr_t *hdrp; | |
1539 | volatile unsigned char *bits; | |
1540 | unsigned char *shbuf, *chbuf; | |
1541 | stliport_t *portp; | |
1542 | stlibrd_t *brdp; | |
1543 | unsigned int len, stlen, head, tail, size; | |
1544 | unsigned long flags; | |
1545 | ||
1546 | #ifdef DEBUG | |
1547 | printk("stli_write(tty=%x,buf=%x,count=%d)\n", | |
1548 | (int) tty, (int) buf, count); | |
1549 | #endif | |
1550 | ||
1551 | if ((tty == (struct tty_struct *) NULL) || | |
1552 | (stli_tmpwritebuf == (char *) NULL)) | |
1553 | return(0); | |
1554 | if (tty == stli_txcooktty) | |
1555 | stli_flushchars(tty); | |
1556 | portp = tty->driver_data; | |
1557 | if (portp == (stliport_t *) NULL) | |
1558 | return(0); | |
1559 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
1560 | return(0); | |
1561 | brdp = stli_brds[portp->brdnr]; | |
1562 | if (brdp == (stlibrd_t *) NULL) | |
1563 | return(0); | |
1564 | chbuf = (unsigned char *) buf; | |
1565 | ||
1566 | /* | |
1567 | * All data is now local, shove as much as possible into shared memory. | |
1568 | */ | |
1569 | save_flags(flags); | |
1570 | cli(); | |
1571 | EBRDENABLE(brdp); | |
1572 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); | |
1573 | head = (unsigned int) ap->txq.head; | |
1574 | tail = (unsigned int) ap->txq.tail; | |
1575 | if (tail != ((unsigned int) ap->txq.tail)) | |
1576 | tail = (unsigned int) ap->txq.tail; | |
1577 | size = portp->txsize; | |
1578 | if (head >= tail) { | |
1579 | len = size - (head - tail) - 1; | |
1580 | stlen = size - head; | |
1581 | } else { | |
1582 | len = tail - head - 1; | |
1583 | stlen = len; | |
1584 | } | |
1585 | ||
1586 | len = MIN(len, count); | |
1587 | count = 0; | |
1588 | shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset); | |
1589 | ||
1590 | while (len > 0) { | |
1591 | stlen = MIN(len, stlen); | |
1592 | memcpy((shbuf + head), chbuf, stlen); | |
1593 | chbuf += stlen; | |
1594 | len -= stlen; | |
1595 | count += stlen; | |
1596 | head += stlen; | |
1597 | if (head >= size) { | |
1598 | head = 0; | |
1599 | stlen = tail; | |
1600 | } | |
1601 | } | |
1602 | ||
1603 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); | |
1604 | ap->txq.head = head; | |
1605 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
1606 | if (ap->changed.data & DT_TXEMPTY) | |
1607 | ap->changed.data &= ~DT_TXEMPTY; | |
1608 | } | |
1609 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1610 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + | |
1611 | portp->portidx; | |
1612 | *bits |= portp->portbit; | |
1613 | set_bit(ST_TXBUSY, &portp->state); | |
1614 | EBRDDISABLE(brdp); | |
1615 | ||
1616 | restore_flags(flags); | |
1617 | ||
1618 | return(count); | |
1619 | } | |
1620 | ||
1621 | /*****************************************************************************/ | |
1622 | ||
1623 | /* | |
1624 | * Output a single character. We put it into a temporary local buffer | |
1625 | * (for speed) then write out that buffer when the flushchars routine | |
1626 | * is called. There is a safety catch here so that if some other port | |
1627 | * writes chars before the current buffer has been, then we write them | |
1628 | * first them do the new ports. | |
1629 | */ | |
1630 | ||
1631 | static void stli_putchar(struct tty_struct *tty, unsigned char ch) | |
1632 | { | |
1633 | #ifdef DEBUG | |
1634 | printk("stli_putchar(tty=%x,ch=%x)\n", (int) tty, (int) ch); | |
1635 | #endif | |
1636 | ||
1637 | if (tty == (struct tty_struct *) NULL) | |
1638 | return; | |
1639 | if (tty != stli_txcooktty) { | |
1640 | if (stli_txcooktty != (struct tty_struct *) NULL) | |
1641 | stli_flushchars(stli_txcooktty); | |
1642 | stli_txcooktty = tty; | |
1643 | } | |
1644 | ||
1645 | stli_txcookbuf[stli_txcooksize++] = ch; | |
1646 | } | |
1647 | ||
1648 | /*****************************************************************************/ | |
1649 | ||
1650 | /* | |
1651 | * Transfer characters from the local TX cooking buffer to the board. | |
1652 | * We sort of ignore the tty that gets passed in here. We rely on the | |
1653 | * info stored with the TX cook buffer to tell us which port to flush | |
1654 | * the data on. In any case we clean out the TX cook buffer, for re-use | |
1655 | * by someone else. | |
1656 | */ | |
1657 | ||
1658 | static void stli_flushchars(struct tty_struct *tty) | |
1659 | { | |
1660 | volatile cdkhdr_t *hdrp; | |
1661 | volatile unsigned char *bits; | |
1662 | volatile cdkasy_t *ap; | |
1663 | struct tty_struct *cooktty; | |
1664 | stliport_t *portp; | |
1665 | stlibrd_t *brdp; | |
1666 | unsigned int len, stlen, head, tail, size, count, cooksize; | |
1667 | unsigned char *buf, *shbuf; | |
1668 | unsigned long flags; | |
1669 | ||
1670 | #ifdef DEBUG | |
1671 | printk("stli_flushchars(tty=%x)\n", (int) tty); | |
1672 | #endif | |
1673 | ||
1674 | cooksize = stli_txcooksize; | |
1675 | cooktty = stli_txcooktty; | |
1676 | stli_txcooksize = 0; | |
1677 | stli_txcookrealsize = 0; | |
1678 | stli_txcooktty = (struct tty_struct *) NULL; | |
1679 | ||
1680 | if (tty == (struct tty_struct *) NULL) | |
1681 | return; | |
1682 | if (cooktty == (struct tty_struct *) NULL) | |
1683 | return; | |
1684 | if (tty != cooktty) | |
1685 | tty = cooktty; | |
1686 | if (cooksize == 0) | |
1687 | return; | |
1688 | ||
1689 | portp = tty->driver_data; | |
1690 | if (portp == (stliport_t *) NULL) | |
1691 | return; | |
1692 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
1693 | return; | |
1694 | brdp = stli_brds[portp->brdnr]; | |
1695 | if (brdp == (stlibrd_t *) NULL) | |
1696 | return; | |
1697 | ||
1698 | save_flags(flags); | |
1699 | cli(); | |
1700 | EBRDENABLE(brdp); | |
1701 | ||
1702 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); | |
1703 | head = (unsigned int) ap->txq.head; | |
1704 | tail = (unsigned int) ap->txq.tail; | |
1705 | if (tail != ((unsigned int) ap->txq.tail)) | |
1706 | tail = (unsigned int) ap->txq.tail; | |
1707 | size = portp->txsize; | |
1708 | if (head >= tail) { | |
1709 | len = size - (head - tail) - 1; | |
1710 | stlen = size - head; | |
1711 | } else { | |
1712 | len = tail - head - 1; | |
1713 | stlen = len; | |
1714 | } | |
1715 | ||
1716 | len = MIN(len, cooksize); | |
1717 | count = 0; | |
1718 | shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset); | |
1719 | buf = stli_txcookbuf; | |
1720 | ||
1721 | while (len > 0) { | |
1722 | stlen = MIN(len, stlen); | |
1723 | memcpy((shbuf + head), buf, stlen); | |
1724 | buf += stlen; | |
1725 | len -= stlen; | |
1726 | count += stlen; | |
1727 | head += stlen; | |
1728 | if (head >= size) { | |
1729 | head = 0; | |
1730 | stlen = tail; | |
1731 | } | |
1732 | } | |
1733 | ||
1734 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); | |
1735 | ap->txq.head = head; | |
1736 | ||
1737 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
1738 | if (ap->changed.data & DT_TXEMPTY) | |
1739 | ap->changed.data &= ~DT_TXEMPTY; | |
1740 | } | |
1741 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1742 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + | |
1743 | portp->portidx; | |
1744 | *bits |= portp->portbit; | |
1745 | set_bit(ST_TXBUSY, &portp->state); | |
1746 | ||
1747 | EBRDDISABLE(brdp); | |
1748 | restore_flags(flags); | |
1749 | } | |
1750 | ||
1751 | /*****************************************************************************/ | |
1752 | ||
1753 | static int stli_writeroom(struct tty_struct *tty) | |
1754 | { | |
1755 | volatile cdkasyrq_t *rp; | |
1756 | stliport_t *portp; | |
1757 | stlibrd_t *brdp; | |
1758 | unsigned int head, tail, len; | |
1759 | unsigned long flags; | |
1760 | ||
1761 | #ifdef DEBUG | |
1762 | printk("stli_writeroom(tty=%x)\n", (int) tty); | |
1763 | #endif | |
1764 | ||
1765 | if (tty == (struct tty_struct *) NULL) | |
1766 | return(0); | |
1767 | if (tty == stli_txcooktty) { | |
1768 | if (stli_txcookrealsize != 0) { | |
1769 | len = stli_txcookrealsize - stli_txcooksize; | |
1770 | return(len); | |
1771 | } | |
1772 | } | |
1773 | ||
1774 | portp = tty->driver_data; | |
1775 | if (portp == (stliport_t *) NULL) | |
1776 | return(0); | |
1777 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
1778 | return(0); | |
1779 | brdp = stli_brds[portp->brdnr]; | |
1780 | if (brdp == (stlibrd_t *) NULL) | |
1781 | return(0); | |
1782 | ||
1783 | save_flags(flags); | |
1784 | cli(); | |
1785 | EBRDENABLE(brdp); | |
1786 | rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq; | |
1787 | head = (unsigned int) rp->head; | |
1788 | tail = (unsigned int) rp->tail; | |
1789 | if (tail != ((unsigned int) rp->tail)) | |
1790 | tail = (unsigned int) rp->tail; | |
1791 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); | |
1792 | len--; | |
1793 | EBRDDISABLE(brdp); | |
1794 | restore_flags(flags); | |
1795 | ||
1796 | if (tty == stli_txcooktty) { | |
1797 | stli_txcookrealsize = len; | |
1798 | len -= stli_txcooksize; | |
1799 | } | |
1800 | return(len); | |
1801 | } | |
1802 | ||
1803 | /*****************************************************************************/ | |
1804 | ||
1805 | /* | |
1806 | * Return the number of characters in the transmit buffer. Normally we | |
1807 | * will return the number of chars in the shared memory ring queue. | |
1808 | * We need to kludge around the case where the shared memory buffer is | |
1809 | * empty but not all characters have drained yet, for this case just | |
1810 | * return that there is 1 character in the buffer! | |
1811 | */ | |
1812 | ||
1813 | static int stli_charsinbuffer(struct tty_struct *tty) | |
1814 | { | |
1815 | volatile cdkasyrq_t *rp; | |
1816 | stliport_t *portp; | |
1817 | stlibrd_t *brdp; | |
1818 | unsigned int head, tail, len; | |
1819 | unsigned long flags; | |
1820 | ||
1821 | #ifdef DEBUG | |
1822 | printk("stli_charsinbuffer(tty=%x)\n", (int) tty); | |
1823 | #endif | |
1824 | ||
1825 | if (tty == (struct tty_struct *) NULL) | |
1826 | return(0); | |
1827 | if (tty == stli_txcooktty) | |
1828 | stli_flushchars(tty); | |
1829 | portp = tty->driver_data; | |
1830 | if (portp == (stliport_t *) NULL) | |
1831 | return(0); | |
1832 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
1833 | return(0); | |
1834 | brdp = stli_brds[portp->brdnr]; | |
1835 | if (brdp == (stlibrd_t *) NULL) | |
1836 | return(0); | |
1837 | ||
1838 | save_flags(flags); | |
1839 | cli(); | |
1840 | EBRDENABLE(brdp); | |
1841 | rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq; | |
1842 | head = (unsigned int) rp->head; | |
1843 | tail = (unsigned int) rp->tail; | |
1844 | if (tail != ((unsigned int) rp->tail)) | |
1845 | tail = (unsigned int) rp->tail; | |
1846 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); | |
1847 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) | |
1848 | len = 1; | |
1849 | EBRDDISABLE(brdp); | |
1850 | restore_flags(flags); | |
1851 | ||
1852 | return(len); | |
1853 | } | |
1854 | ||
1855 | /*****************************************************************************/ | |
1856 | ||
1857 | /* | |
1858 | * Generate the serial struct info. | |
1859 | */ | |
1860 | ||
1861 | static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp) | |
1862 | { | |
1863 | struct serial_struct sio; | |
1864 | stlibrd_t *brdp; | |
1865 | ||
1866 | #ifdef DEBUG | |
1867 | printk("stli_getserial(portp=%x,sp=%x)\n", (int) portp, (int) sp); | |
1868 | #endif | |
1869 | ||
1870 | memset(&sio, 0, sizeof(struct serial_struct)); | |
1871 | sio.type = PORT_UNKNOWN; | |
1872 | sio.line = portp->portnr; | |
1873 | sio.irq = 0; | |
1874 | sio.flags = portp->flags; | |
1875 | sio.baud_base = portp->baud_base; | |
1876 | sio.close_delay = portp->close_delay; | |
1877 | sio.closing_wait = portp->closing_wait; | |
1878 | sio.custom_divisor = portp->custom_divisor; | |
1879 | sio.xmit_fifo_size = 0; | |
1880 | sio.hub6 = 0; | |
1881 | ||
1882 | brdp = stli_brds[portp->brdnr]; | |
1883 | if (brdp != (stlibrd_t *) NULL) | |
1884 | sio.port = brdp->iobase; | |
1885 | ||
1886 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? | |
1887 | -EFAULT : 0; | |
1888 | } | |
1889 | ||
1890 | /*****************************************************************************/ | |
1891 | ||
1892 | /* | |
1893 | * Set port according to the serial struct info. | |
1894 | * At this point we do not do any auto-configure stuff, so we will | |
1895 | * just quietly ignore any requests to change irq, etc. | |
1896 | */ | |
1897 | ||
1898 | static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp) | |
1899 | { | |
1900 | struct serial_struct sio; | |
1901 | int rc; | |
1902 | ||
1903 | #ifdef DEBUG | |
1904 | printk("stli_setserial(portp=%p,sp=%p)\n", portp, sp); | |
1905 | #endif | |
1906 | ||
1907 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) | |
1908 | return -EFAULT; | |
1909 | if (!capable(CAP_SYS_ADMIN)) { | |
1910 | if ((sio.baud_base != portp->baud_base) || | |
1911 | (sio.close_delay != portp->close_delay) || | |
1912 | ((sio.flags & ~ASYNC_USR_MASK) != | |
1913 | (portp->flags & ~ASYNC_USR_MASK))) | |
1914 | return(-EPERM); | |
1915 | } | |
1916 | ||
1917 | portp->flags = (portp->flags & ~ASYNC_USR_MASK) | | |
1918 | (sio.flags & ASYNC_USR_MASK); | |
1919 | portp->baud_base = sio.baud_base; | |
1920 | portp->close_delay = sio.close_delay; | |
1921 | portp->closing_wait = sio.closing_wait; | |
1922 | portp->custom_divisor = sio.custom_divisor; | |
1923 | ||
1924 | if ((rc = stli_setport(portp)) < 0) | |
1925 | return(rc); | |
1926 | return(0); | |
1927 | } | |
1928 | ||
1929 | /*****************************************************************************/ | |
1930 | ||
1931 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) | |
1932 | { | |
1933 | stliport_t *portp = tty->driver_data; | |
1934 | stlibrd_t *brdp; | |
1935 | int rc; | |
1936 | ||
1937 | if (portp == (stliport_t *) NULL) | |
1938 | return(-ENODEV); | |
1939 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
1940 | return(0); | |
1941 | brdp = stli_brds[portp->brdnr]; | |
1942 | if (brdp == (stlibrd_t *) NULL) | |
1943 | return(0); | |
1944 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
1945 | return(-EIO); | |
1946 | ||
1947 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, | |
1948 | &portp->asig, sizeof(asysigs_t), 1)) < 0) | |
1949 | return(rc); | |
1950 | ||
1951 | return stli_mktiocm(portp->asig.sigvalue); | |
1952 | } | |
1953 | ||
1954 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, | |
1955 | unsigned int set, unsigned int clear) | |
1956 | { | |
1957 | stliport_t *portp = tty->driver_data; | |
1958 | stlibrd_t *brdp; | |
1959 | int rts = -1, dtr = -1; | |
1960 | ||
1961 | if (portp == (stliport_t *) NULL) | |
1962 | return(-ENODEV); | |
1963 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
1964 | return(0); | |
1965 | brdp = stli_brds[portp->brdnr]; | |
1966 | if (brdp == (stlibrd_t *) NULL) | |
1967 | return(0); | |
1968 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
1969 | return(-EIO); | |
1970 | ||
1971 | if (set & TIOCM_RTS) | |
1972 | rts = 1; | |
1973 | if (set & TIOCM_DTR) | |
1974 | dtr = 1; | |
1975 | if (clear & TIOCM_RTS) | |
1976 | rts = 0; | |
1977 | if (clear & TIOCM_DTR) | |
1978 | dtr = 0; | |
1979 | ||
1980 | stli_mkasysigs(&portp->asig, dtr, rts); | |
1981 | ||
1982 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1983 | sizeof(asysigs_t), 0); | |
1984 | } | |
1985 | ||
1986 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1987 | { | |
1988 | stliport_t *portp; | |
1989 | stlibrd_t *brdp; | |
1990 | unsigned int ival; | |
1991 | int rc; | |
1992 | void __user *argp = (void __user *)arg; | |
1993 | ||
1994 | #ifdef DEBUG | |
1995 | printk("stli_ioctl(tty=%x,file=%x,cmd=%x,arg=%x)\n", | |
1996 | (int) tty, (int) file, cmd, (int) arg); | |
1997 | #endif | |
1998 | ||
1999 | if (tty == (struct tty_struct *) NULL) | |
2000 | return(-ENODEV); | |
2001 | portp = tty->driver_data; | |
2002 | if (portp == (stliport_t *) NULL) | |
2003 | return(-ENODEV); | |
2004 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
2005 | return(0); | |
2006 | brdp = stli_brds[portp->brdnr]; | |
2007 | if (brdp == (stlibrd_t *) NULL) | |
2008 | return(0); | |
2009 | ||
2010 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && | |
2011 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { | |
2012 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
2013 | return(-EIO); | |
2014 | } | |
2015 | ||
2016 | rc = 0; | |
2017 | ||
2018 | switch (cmd) { | |
2019 | case TIOCGSOFTCAR: | |
2020 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), | |
2021 | (unsigned __user *) arg); | |
2022 | break; | |
2023 | case TIOCSSOFTCAR: | |
2024 | if ((rc = get_user(ival, (unsigned __user *) arg)) == 0) | |
2025 | tty->termios->c_cflag = | |
2026 | (tty->termios->c_cflag & ~CLOCAL) | | |
2027 | (ival ? CLOCAL : 0); | |
2028 | break; | |
2029 | case TIOCGSERIAL: | |
2030 | rc = stli_getserial(portp, argp); | |
2031 | break; | |
2032 | case TIOCSSERIAL: | |
2033 | rc = stli_setserial(portp, argp); | |
2034 | break; | |
2035 | case STL_GETPFLAG: | |
2036 | rc = put_user(portp->pflag, (unsigned __user *)argp); | |
2037 | break; | |
2038 | case STL_SETPFLAG: | |
2039 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) | |
2040 | stli_setport(portp); | |
2041 | break; | |
2042 | case COM_GETPORTSTATS: | |
2043 | rc = stli_getportstats(portp, argp); | |
2044 | break; | |
2045 | case COM_CLRPORTSTATS: | |
2046 | rc = stli_clrportstats(portp, argp); | |
2047 | break; | |
2048 | case TIOCSERCONFIG: | |
2049 | case TIOCSERGWILD: | |
2050 | case TIOCSERSWILD: | |
2051 | case TIOCSERGETLSR: | |
2052 | case TIOCSERGSTRUCT: | |
2053 | case TIOCSERGETMULTI: | |
2054 | case TIOCSERSETMULTI: | |
2055 | default: | |
2056 | rc = -ENOIOCTLCMD; | |
2057 | break; | |
2058 | } | |
2059 | ||
2060 | return(rc); | |
2061 | } | |
2062 | ||
2063 | /*****************************************************************************/ | |
2064 | ||
2065 | /* | |
2066 | * This routine assumes that we have user context and can sleep. | |
2067 | * Looks like it is true for the current ttys implementation..!! | |
2068 | */ | |
2069 | ||
2070 | static void stli_settermios(struct tty_struct *tty, struct termios *old) | |
2071 | { | |
2072 | stliport_t *portp; | |
2073 | stlibrd_t *brdp; | |
2074 | struct termios *tiosp; | |
2075 | asyport_t aport; | |
2076 | ||
2077 | #ifdef DEBUG | |
2078 | printk("stli_settermios(tty=%x,old=%x)\n", (int) tty, (int) old); | |
2079 | #endif | |
2080 | ||
2081 | if (tty == (struct tty_struct *) NULL) | |
2082 | return; | |
2083 | portp = tty->driver_data; | |
2084 | if (portp == (stliport_t *) NULL) | |
2085 | return; | |
2086 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
2087 | return; | |
2088 | brdp = stli_brds[portp->brdnr]; | |
2089 | if (brdp == (stlibrd_t *) NULL) | |
2090 | return; | |
2091 | ||
2092 | tiosp = tty->termios; | |
2093 | if ((tiosp->c_cflag == old->c_cflag) && | |
2094 | (tiosp->c_iflag == old->c_iflag)) | |
2095 | return; | |
2096 | ||
2097 | stli_mkasyport(portp, &aport, tiosp); | |
2098 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); | |
2099 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); | |
2100 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
2101 | sizeof(asysigs_t), 0); | |
2102 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) | |
2103 | tty->hw_stopped = 0; | |
2104 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) | |
2105 | wake_up_interruptible(&portp->open_wait); | |
2106 | } | |
2107 | ||
2108 | /*****************************************************************************/ | |
2109 | ||
2110 | /* | |
2111 | * Attempt to flow control who ever is sending us data. We won't really | |
2112 | * do any flow control action here. We can't directly, and even if we | |
2113 | * wanted to we would have to send a command to the slave. The slave | |
2114 | * knows how to flow control, and will do so when its buffers reach its | |
2115 | * internal high water marks. So what we will do is set a local state | |
2116 | * bit that will stop us sending any RX data up from the poll routine | |
2117 | * (which is the place where RX data from the slave is handled). | |
2118 | */ | |
2119 | ||
2120 | static void stli_throttle(struct tty_struct *tty) | |
2121 | { | |
2122 | stliport_t *portp; | |
2123 | ||
2124 | #ifdef DEBUG | |
2125 | printk("stli_throttle(tty=%x)\n", (int) tty); | |
2126 | #endif | |
2127 | ||
2128 | if (tty == (struct tty_struct *) NULL) | |
2129 | return; | |
2130 | portp = tty->driver_data; | |
2131 | if (portp == (stliport_t *) NULL) | |
2132 | return; | |
2133 | ||
2134 | set_bit(ST_RXSTOP, &portp->state); | |
2135 | } | |
2136 | ||
2137 | /*****************************************************************************/ | |
2138 | ||
2139 | /* | |
2140 | * Unflow control the device sending us data... That means that all | |
2141 | * we have to do is clear the RXSTOP state bit. The next poll call | |
2142 | * will then be able to pass the RX data back up. | |
2143 | */ | |
2144 | ||
2145 | static void stli_unthrottle(struct tty_struct *tty) | |
2146 | { | |
2147 | stliport_t *portp; | |
2148 | ||
2149 | #ifdef DEBUG | |
2150 | printk("stli_unthrottle(tty=%x)\n", (int) tty); | |
2151 | #endif | |
2152 | ||
2153 | if (tty == (struct tty_struct *) NULL) | |
2154 | return; | |
2155 | portp = tty->driver_data; | |
2156 | if (portp == (stliport_t *) NULL) | |
2157 | return; | |
2158 | ||
2159 | clear_bit(ST_RXSTOP, &portp->state); | |
2160 | } | |
2161 | ||
2162 | /*****************************************************************************/ | |
2163 | ||
2164 | /* | |
2165 | * Stop the transmitter. Basically to do this we will just turn TX | |
2166 | * interrupts off. | |
2167 | */ | |
2168 | ||
2169 | static void stli_stop(struct tty_struct *tty) | |
2170 | { | |
2171 | stlibrd_t *brdp; | |
2172 | stliport_t *portp; | |
2173 | asyctrl_t actrl; | |
2174 | ||
2175 | #ifdef DEBUG | |
2176 | printk("stli_stop(tty=%x)\n", (int) tty); | |
2177 | #endif | |
2178 | ||
2179 | if (tty == (struct tty_struct *) NULL) | |
2180 | return; | |
2181 | portp = tty->driver_data; | |
2182 | if (portp == (stliport_t *) NULL) | |
2183 | return; | |
2184 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
2185 | return; | |
2186 | brdp = stli_brds[portp->brdnr]; | |
2187 | if (brdp == (stlibrd_t *) NULL) | |
2188 | return; | |
2189 | ||
2190 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
2191 | actrl.txctrl = CT_STOPFLOW; | |
2192 | #if 0 | |
2193 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); | |
2194 | #endif | |
2195 | } | |
2196 | ||
2197 | /*****************************************************************************/ | |
2198 | ||
2199 | /* | |
2200 | * Start the transmitter again. Just turn TX interrupts back on. | |
2201 | */ | |
2202 | ||
2203 | static void stli_start(struct tty_struct *tty) | |
2204 | { | |
2205 | stliport_t *portp; | |
2206 | stlibrd_t *brdp; | |
2207 | asyctrl_t actrl; | |
2208 | ||
2209 | #ifdef DEBUG | |
2210 | printk("stli_start(tty=%x)\n", (int) tty); | |
2211 | #endif | |
2212 | ||
2213 | if (tty == (struct tty_struct *) NULL) | |
2214 | return; | |
2215 | portp = tty->driver_data; | |
2216 | if (portp == (stliport_t *) NULL) | |
2217 | return; | |
2218 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
2219 | return; | |
2220 | brdp = stli_brds[portp->brdnr]; | |
2221 | if (brdp == (stlibrd_t *) NULL) | |
2222 | return; | |
2223 | ||
2224 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
2225 | actrl.txctrl = CT_STARTFLOW; | |
2226 | #if 0 | |
2227 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); | |
2228 | #endif | |
2229 | } | |
2230 | ||
2231 | /*****************************************************************************/ | |
2232 | ||
2233 | /* | |
2234 | * Scheduler called hang up routine. This is called from the scheduler, | |
2235 | * not direct from the driver "poll" routine. We can't call it there | |
2236 | * since the real local hangup code will enable/disable the board and | |
2237 | * other things that we can't do while handling the poll. Much easier | |
2238 | * to deal with it some time later (don't really care when, hangups | |
2239 | * aren't that time critical). | |
2240 | */ | |
2241 | ||
2242 | static void stli_dohangup(void *arg) | |
2243 | { | |
2244 | stliport_t *portp; | |
2245 | ||
2246 | #ifdef DEBUG | |
2247 | printk(KERN_DEBUG "stli_dohangup(portp=%x)\n", (int) arg); | |
2248 | #endif | |
2249 | ||
2250 | /* | |
2251 | * FIXME: There's a module removal race here: tty_hangup | |
2252 | * calls schedule_work which will call into this | |
2253 | * driver later. | |
2254 | */ | |
2255 | portp = (stliport_t *) arg; | |
2256 | if (portp != (stliport_t *) NULL) { | |
2257 | if (portp->tty != (struct tty_struct *) NULL) { | |
2258 | tty_hangup(portp->tty); | |
2259 | } | |
2260 | } | |
2261 | } | |
2262 | ||
2263 | /*****************************************************************************/ | |
2264 | ||
2265 | /* | |
2266 | * Hangup this port. This is pretty much like closing the port, only | |
2267 | * a little more brutal. No waiting for data to drain. Shutdown the | |
2268 | * port and maybe drop signals. This is rather tricky really. We want | |
2269 | * to close the port as well. | |
2270 | */ | |
2271 | ||
2272 | static void stli_hangup(struct tty_struct *tty) | |
2273 | { | |
2274 | stliport_t *portp; | |
2275 | stlibrd_t *brdp; | |
2276 | unsigned long flags; | |
2277 | ||
2278 | #ifdef DEBUG | |
2279 | printk(KERN_DEBUG "stli_hangup(tty=%x)\n", (int) tty); | |
2280 | #endif | |
2281 | ||
2282 | if (tty == (struct tty_struct *) NULL) | |
2283 | return; | |
2284 | portp = tty->driver_data; | |
2285 | if (portp == (stliport_t *) NULL) | |
2286 | return; | |
2287 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
2288 | return; | |
2289 | brdp = stli_brds[portp->brdnr]; | |
2290 | if (brdp == (stlibrd_t *) NULL) | |
2291 | return; | |
2292 | ||
2293 | portp->flags &= ~ASYNC_INITIALIZED; | |
2294 | ||
2295 | save_flags(flags); | |
2296 | cli(); | |
2297 | if (! test_bit(ST_CLOSING, &portp->state)) | |
2298 | stli_rawclose(brdp, portp, 0, 0); | |
2299 | if (tty->termios->c_cflag & HUPCL) { | |
2300 | stli_mkasysigs(&portp->asig, 0, 0); | |
2301 | if (test_bit(ST_CMDING, &portp->state)) { | |
2302 | set_bit(ST_DOSIGS, &portp->state); | |
2303 | set_bit(ST_DOFLUSHTX, &portp->state); | |
2304 | set_bit(ST_DOFLUSHRX, &portp->state); | |
2305 | } else { | |
2306 | stli_sendcmd(brdp, portp, A_SETSIGNALSF, | |
2307 | &portp->asig, sizeof(asysigs_t), 0); | |
2308 | } | |
2309 | } | |
2310 | restore_flags(flags); | |
2311 | ||
2312 | clear_bit(ST_TXBUSY, &portp->state); | |
2313 | clear_bit(ST_RXSTOP, &portp->state); | |
2314 | set_bit(TTY_IO_ERROR, &tty->flags); | |
2315 | portp->tty = (struct tty_struct *) NULL; | |
2316 | portp->flags &= ~ASYNC_NORMAL_ACTIVE; | |
2317 | portp->refcount = 0; | |
2318 | wake_up_interruptible(&portp->open_wait); | |
2319 | } | |
2320 | ||
2321 | /*****************************************************************************/ | |
2322 | ||
2323 | /* | |
2324 | * Flush characters from the lower buffer. We may not have user context | |
2325 | * so we cannot sleep waiting for it to complete. Also we need to check | |
2326 | * if there is chars for this port in the TX cook buffer, and flush them | |
2327 | * as well. | |
2328 | */ | |
2329 | ||
2330 | static void stli_flushbuffer(struct tty_struct *tty) | |
2331 | { | |
2332 | stliport_t *portp; | |
2333 | stlibrd_t *brdp; | |
2334 | unsigned long ftype, flags; | |
2335 | ||
2336 | #ifdef DEBUG | |
2337 | printk(KERN_DEBUG "stli_flushbuffer(tty=%x)\n", (int) tty); | |
2338 | #endif | |
2339 | ||
2340 | if (tty == (struct tty_struct *) NULL) | |
2341 | return; | |
2342 | portp = tty->driver_data; | |
2343 | if (portp == (stliport_t *) NULL) | |
2344 | return; | |
2345 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
2346 | return; | |
2347 | brdp = stli_brds[portp->brdnr]; | |
2348 | if (brdp == (stlibrd_t *) NULL) | |
2349 | return; | |
2350 | ||
2351 | save_flags(flags); | |
2352 | cli(); | |
2353 | if (tty == stli_txcooktty) { | |
2354 | stli_txcooktty = (struct tty_struct *) NULL; | |
2355 | stli_txcooksize = 0; | |
2356 | stli_txcookrealsize = 0; | |
2357 | } | |
2358 | if (test_bit(ST_CMDING, &portp->state)) { | |
2359 | set_bit(ST_DOFLUSHTX, &portp->state); | |
2360 | } else { | |
2361 | ftype = FLUSHTX; | |
2362 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2363 | ftype |= FLUSHRX; | |
2364 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2365 | } | |
2366 | stli_sendcmd(brdp, portp, A_FLUSH, &ftype, | |
2367 | sizeof(unsigned long), 0); | |
2368 | } | |
2369 | restore_flags(flags); | |
2370 | ||
2371 | wake_up_interruptible(&tty->write_wait); | |
2372 | if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && | |
2373 | tty->ldisc.write_wakeup) | |
2374 | (tty->ldisc.write_wakeup)(tty); | |
2375 | } | |
2376 | ||
2377 | /*****************************************************************************/ | |
2378 | ||
2379 | static void stli_breakctl(struct tty_struct *tty, int state) | |
2380 | { | |
2381 | stlibrd_t *brdp; | |
2382 | stliport_t *portp; | |
2383 | long arg; | |
2384 | /* long savestate, savetime; */ | |
2385 | ||
2386 | #ifdef DEBUG | |
2387 | printk(KERN_DEBUG "stli_breakctl(tty=%x,state=%d)\n", (int) tty, state); | |
2388 | #endif | |
2389 | ||
2390 | if (tty == (struct tty_struct *) NULL) | |
2391 | return; | |
2392 | portp = tty->driver_data; | |
2393 | if (portp == (stliport_t *) NULL) | |
2394 | return; | |
2395 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
2396 | return; | |
2397 | brdp = stli_brds[portp->brdnr]; | |
2398 | if (brdp == (stlibrd_t *) NULL) | |
2399 | return; | |
2400 | ||
2401 | /* | |
2402 | * Due to a bug in the tty send_break() code we need to preserve | |
2403 | * the current process state and timeout... | |
2404 | savetime = current->timeout; | |
2405 | savestate = current->state; | |
2406 | */ | |
2407 | ||
2408 | arg = (state == -1) ? BREAKON : BREAKOFF; | |
2409 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); | |
2410 | ||
2411 | /* | |
2412 | * | |
2413 | current->timeout = savetime; | |
2414 | current->state = savestate; | |
2415 | */ | |
2416 | } | |
2417 | ||
2418 | /*****************************************************************************/ | |
2419 | ||
2420 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) | |
2421 | { | |
2422 | stliport_t *portp; | |
2423 | unsigned long tend; | |
2424 | ||
2425 | #ifdef DEBUG | |
2426 | printk(KERN_DEBUG "stli_waituntilsent(tty=%x,timeout=%x)\n", (int) tty, timeout); | |
2427 | #endif | |
2428 | ||
2429 | if (tty == (struct tty_struct *) NULL) | |
2430 | return; | |
2431 | portp = tty->driver_data; | |
2432 | if (portp == (stliport_t *) NULL) | |
2433 | return; | |
2434 | ||
2435 | if (timeout == 0) | |
2436 | timeout = HZ; | |
2437 | tend = jiffies + timeout; | |
2438 | ||
2439 | while (test_bit(ST_TXBUSY, &portp->state)) { | |
2440 | if (signal_pending(current)) | |
2441 | break; | |
2442 | msleep_interruptible(20); | |
2443 | if (time_after_eq(jiffies, tend)) | |
2444 | break; | |
2445 | } | |
2446 | } | |
2447 | ||
2448 | /*****************************************************************************/ | |
2449 | ||
2450 | static void stli_sendxchar(struct tty_struct *tty, char ch) | |
2451 | { | |
2452 | stlibrd_t *brdp; | |
2453 | stliport_t *portp; | |
2454 | asyctrl_t actrl; | |
2455 | ||
2456 | #ifdef DEBUG | |
2457 | printk(KERN_DEBUG "stli_sendxchar(tty=%x,ch=%x)\n", (int) tty, ch); | |
2458 | #endif | |
2459 | ||
2460 | if (tty == (struct tty_struct *) NULL) | |
2461 | return; | |
2462 | portp = tty->driver_data; | |
2463 | if (portp == (stliport_t *) NULL) | |
2464 | return; | |
2465 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
2466 | return; | |
2467 | brdp = stli_brds[portp->brdnr]; | |
2468 | if (brdp == (stlibrd_t *) NULL) | |
2469 | return; | |
2470 | ||
2471 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
2472 | if (ch == STOP_CHAR(tty)) { | |
2473 | actrl.rxctrl = CT_STOPFLOW; | |
2474 | } else if (ch == START_CHAR(tty)) { | |
2475 | actrl.rxctrl = CT_STARTFLOW; | |
2476 | } else { | |
2477 | actrl.txctrl = CT_SENDCHR; | |
2478 | actrl.tximdch = ch; | |
2479 | } | |
2480 | ||
2481 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); | |
2482 | } | |
2483 | ||
2484 | /*****************************************************************************/ | |
2485 | ||
2486 | #define MAXLINE 80 | |
2487 | ||
2488 | /* | |
2489 | * Format info for a specified port. The line is deliberately limited | |
2490 | * to 80 characters. (If it is too long it will be truncated, if too | |
2491 | * short then padded with spaces). | |
2492 | */ | |
2493 | ||
2494 | static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos) | |
2495 | { | |
2496 | char *sp, *uart; | |
2497 | int rc, cnt; | |
2498 | ||
2499 | rc = stli_portcmdstats(portp); | |
2500 | ||
2501 | uart = "UNKNOWN"; | |
2502 | if (brdp->state & BST_STARTED) { | |
2503 | switch (stli_comstats.hwid) { | |
2504 | case 0: uart = "2681"; break; | |
2505 | case 1: uart = "SC26198"; break; | |
2506 | default: uart = "CD1400"; break; | |
2507 | } | |
2508 | } | |
2509 | ||
2510 | sp = pos; | |
2511 | sp += sprintf(sp, "%d: uart:%s ", portnr, uart); | |
2512 | ||
2513 | if ((brdp->state & BST_STARTED) && (rc >= 0)) { | |
2514 | sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal, | |
2515 | (int) stli_comstats.rxtotal); | |
2516 | ||
2517 | if (stli_comstats.rxframing) | |
2518 | sp += sprintf(sp, " fe:%d", | |
2519 | (int) stli_comstats.rxframing); | |
2520 | if (stli_comstats.rxparity) | |
2521 | sp += sprintf(sp, " pe:%d", | |
2522 | (int) stli_comstats.rxparity); | |
2523 | if (stli_comstats.rxbreaks) | |
2524 | sp += sprintf(sp, " brk:%d", | |
2525 | (int) stli_comstats.rxbreaks); | |
2526 | if (stli_comstats.rxoverrun) | |
2527 | sp += sprintf(sp, " oe:%d", | |
2528 | (int) stli_comstats.rxoverrun); | |
2529 | ||
2530 | cnt = sprintf(sp, "%s%s%s%s%s ", | |
2531 | (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "", | |
2532 | (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "", | |
2533 | (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "", | |
2534 | (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "", | |
2535 | (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : ""); | |
2536 | *sp = ' '; | |
2537 | sp += cnt; | |
2538 | } | |
2539 | ||
2540 | for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++) | |
2541 | *sp++ = ' '; | |
2542 | if (cnt >= MAXLINE) | |
2543 | pos[(MAXLINE - 2)] = '+'; | |
2544 | pos[(MAXLINE - 1)] = '\n'; | |
2545 | ||
2546 | return(MAXLINE); | |
2547 | } | |
2548 | ||
2549 | /*****************************************************************************/ | |
2550 | ||
2551 | /* | |
2552 | * Port info, read from the /proc file system. | |
2553 | */ | |
2554 | ||
2555 | static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data) | |
2556 | { | |
2557 | stlibrd_t *brdp; | |
2558 | stliport_t *portp; | |
2559 | int brdnr, portnr, totalport; | |
2560 | int curoff, maxoff; | |
2561 | char *pos; | |
2562 | ||
2563 | #ifdef DEBUG | |
2564 | printk(KERN_DEBUG "stli_readproc(page=%x,start=%x,off=%x,count=%d,eof=%x," | |
2565 | "data=%x\n", (int) page, (int) start, (int) off, count, | |
2566 | (int) eof, (int) data); | |
2567 | #endif | |
2568 | ||
2569 | pos = page; | |
2570 | totalport = 0; | |
2571 | curoff = 0; | |
2572 | ||
2573 | if (off == 0) { | |
2574 | pos += sprintf(pos, "%s: version %s", stli_drvtitle, | |
2575 | stli_drvversion); | |
2576 | while (pos < (page + MAXLINE - 1)) | |
2577 | *pos++ = ' '; | |
2578 | *pos++ = '\n'; | |
2579 | } | |
2580 | curoff = MAXLINE; | |
2581 | ||
2582 | /* | |
2583 | * We scan through for each board, panel and port. The offset is | |
2584 | * calculated on the fly, and irrelevant ports are skipped. | |
2585 | */ | |
2586 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2587 | brdp = stli_brds[brdnr]; | |
2588 | if (brdp == (stlibrd_t *) NULL) | |
2589 | continue; | |
2590 | if (brdp->state == 0) | |
2591 | continue; | |
2592 | ||
2593 | maxoff = curoff + (brdp->nrports * MAXLINE); | |
2594 | if (off >= maxoff) { | |
2595 | curoff = maxoff; | |
2596 | continue; | |
2597 | } | |
2598 | ||
2599 | totalport = brdnr * STL_MAXPORTS; | |
2600 | for (portnr = 0; (portnr < brdp->nrports); portnr++, | |
2601 | totalport++) { | |
2602 | portp = brdp->ports[portnr]; | |
2603 | if (portp == (stliport_t *) NULL) | |
2604 | continue; | |
2605 | if (off >= (curoff += MAXLINE)) | |
2606 | continue; | |
2607 | if ((pos - page + MAXLINE) > count) | |
2608 | goto stli_readdone; | |
2609 | pos += stli_portinfo(brdp, portp, totalport, pos); | |
2610 | } | |
2611 | } | |
2612 | ||
2613 | *eof = 1; | |
2614 | ||
2615 | stli_readdone: | |
2616 | *start = page; | |
2617 | return(pos - page); | |
2618 | } | |
2619 | ||
2620 | /*****************************************************************************/ | |
2621 | ||
2622 | /* | |
2623 | * Generic send command routine. This will send a message to the slave, | |
2624 | * of the specified type with the specified argument. Must be very | |
2625 | * careful of data that will be copied out from shared memory - | |
2626 | * containing command results. The command completion is all done from | |
2627 | * a poll routine that does not have user context. Therefore you cannot | |
2628 | * copy back directly into user space, or to the kernel stack of a | |
2629 | * process. This routine does not sleep, so can be called from anywhere. | |
2630 | */ | |
2631 | ||
2632 | static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) | |
2633 | { | |
2634 | volatile cdkhdr_t *hdrp; | |
2635 | volatile cdkctrl_t *cp; | |
2636 | volatile unsigned char *bits; | |
2637 | unsigned long flags; | |
2638 | ||
2639 | #ifdef DEBUG | |
2640 | printk(KERN_DEBUG "stli_sendcmd(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d," | |
2641 | "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd, | |
2642 | (int) arg, size, copyback); | |
2643 | #endif | |
2644 | ||
2645 | save_flags(flags); | |
2646 | cli(); | |
2647 | ||
2648 | if (test_bit(ST_CMDING, &portp->state)) { | |
2649 | printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n", | |
2650 | (int) cmd); | |
2651 | restore_flags(flags); | |
2652 | return; | |
2653 | } | |
2654 | ||
2655 | EBRDENABLE(brdp); | |
2656 | cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; | |
2657 | if (size > 0) { | |
2658 | memcpy((void *) &(cp->args[0]), arg, size); | |
2659 | if (copyback) { | |
2660 | portp->argp = arg; | |
2661 | portp->argsize = size; | |
2662 | } | |
2663 | } | |
2664 | cp->status = 0; | |
2665 | cp->cmd = cmd; | |
2666 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
2667 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + | |
2668 | portp->portidx; | |
2669 | *bits |= portp->portbit; | |
2670 | set_bit(ST_CMDING, &portp->state); | |
2671 | EBRDDISABLE(brdp); | |
2672 | restore_flags(flags); | |
2673 | } | |
2674 | ||
2675 | /*****************************************************************************/ | |
2676 | ||
2677 | /* | |
2678 | * Read data from shared memory. This assumes that the shared memory | |
2679 | * is enabled and that interrupts are off. Basically we just empty out | |
2680 | * the shared memory buffer into the tty buffer. Must be careful to | |
2681 | * handle the case where we fill up the tty buffer, but still have | |
2682 | * more chars to unload. | |
2683 | */ | |
2684 | ||
2685 | static void stli_read(stlibrd_t *brdp, stliport_t *portp) | |
2686 | { | |
2687 | volatile cdkasyrq_t *rp; | |
2688 | volatile char *shbuf; | |
2689 | struct tty_struct *tty; | |
2690 | unsigned int head, tail, size; | |
2691 | unsigned int len, stlen; | |
2692 | ||
2693 | #ifdef DEBUG | |
2694 | printk(KERN_DEBUG "stli_read(brdp=%x,portp=%d)\n", | |
2695 | (int) brdp, (int) portp); | |
2696 | #endif | |
2697 | ||
2698 | if (test_bit(ST_RXSTOP, &portp->state)) | |
2699 | return; | |
2700 | tty = portp->tty; | |
2701 | if (tty == (struct tty_struct *) NULL) | |
2702 | return; | |
2703 | ||
2704 | rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; | |
2705 | head = (unsigned int) rp->head; | |
2706 | if (head != ((unsigned int) rp->head)) | |
2707 | head = (unsigned int) rp->head; | |
2708 | tail = (unsigned int) rp->tail; | |
2709 | size = portp->rxsize; | |
2710 | if (head >= tail) { | |
2711 | len = head - tail; | |
2712 | stlen = len; | |
2713 | } else { | |
2714 | len = size - (tail - head); | |
2715 | stlen = size - tail; | |
2716 | } | |
2717 | ||
2718 | len = MIN(len, (TTY_FLIPBUF_SIZE - tty->flip.count)); | |
2719 | shbuf = (volatile char *) EBRDGETMEMPTR(brdp, portp->rxoffset); | |
2720 | ||
2721 | while (len > 0) { | |
2722 | stlen = MIN(len, stlen); | |
2723 | memcpy(tty->flip.char_buf_ptr, (char *) (shbuf + tail), stlen); | |
2724 | memset(tty->flip.flag_buf_ptr, 0, stlen); | |
2725 | tty->flip.char_buf_ptr += stlen; | |
2726 | tty->flip.flag_buf_ptr += stlen; | |
2727 | tty->flip.count += stlen; | |
2728 | ||
2729 | len -= stlen; | |
2730 | tail += stlen; | |
2731 | if (tail >= size) { | |
2732 | tail = 0; | |
2733 | stlen = head; | |
2734 | } | |
2735 | } | |
2736 | rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; | |
2737 | rp->tail = tail; | |
2738 | ||
2739 | if (head != tail) | |
2740 | set_bit(ST_RXING, &portp->state); | |
2741 | ||
2742 | tty_schedule_flip(tty); | |
2743 | } | |
2744 | ||
2745 | /*****************************************************************************/ | |
2746 | ||
2747 | /* | |
2748 | * Set up and carry out any delayed commands. There is only a small set | |
2749 | * of slave commands that can be done "off-level". So it is not too | |
2750 | * difficult to deal with them here. | |
2751 | */ | |
2752 | ||
2753 | static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp) | |
2754 | { | |
2755 | int cmd; | |
2756 | ||
2757 | if (test_bit(ST_DOSIGS, &portp->state)) { | |
2758 | if (test_bit(ST_DOFLUSHTX, &portp->state) && | |
2759 | test_bit(ST_DOFLUSHRX, &portp->state)) | |
2760 | cmd = A_SETSIGNALSF; | |
2761 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) | |
2762 | cmd = A_SETSIGNALSFTX; | |
2763 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) | |
2764 | cmd = A_SETSIGNALSFRX; | |
2765 | else | |
2766 | cmd = A_SETSIGNALS; | |
2767 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2768 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2769 | clear_bit(ST_DOSIGS, &portp->state); | |
2770 | memcpy((void *) &(cp->args[0]), (void *) &portp->asig, | |
2771 | sizeof(asysigs_t)); | |
2772 | cp->status = 0; | |
2773 | cp->cmd = cmd; | |
2774 | set_bit(ST_CMDING, &portp->state); | |
2775 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || | |
2776 | test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2777 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); | |
2778 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); | |
2779 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2780 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2781 | memcpy((void *) &(cp->args[0]), (void *) &cmd, sizeof(int)); | |
2782 | cp->status = 0; | |
2783 | cp->cmd = A_FLUSH; | |
2784 | set_bit(ST_CMDING, &portp->state); | |
2785 | } | |
2786 | } | |
2787 | ||
2788 | /*****************************************************************************/ | |
2789 | ||
2790 | /* | |
2791 | * Host command service checking. This handles commands or messages | |
2792 | * coming from the slave to the host. Must have board shared memory | |
2793 | * enabled and interrupts off when called. Notice that by servicing the | |
2794 | * read data last we don't need to change the shared memory pointer | |
2795 | * during processing (which is a slow IO operation). | |
2796 | * Return value indicates if this port is still awaiting actions from | |
2797 | * the slave (like open, command, or even TX data being sent). If 0 | |
2798 | * then port is still busy, otherwise no longer busy. | |
2799 | */ | |
2800 | ||
2801 | static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp) | |
2802 | { | |
2803 | volatile cdkasy_t *ap; | |
2804 | volatile cdkctrl_t *cp; | |
2805 | struct tty_struct *tty; | |
2806 | asynotify_t nt; | |
2807 | unsigned long oldsigs; | |
2808 | int rc, donerx; | |
2809 | ||
2810 | #ifdef DEBUG | |
2811 | printk(KERN_DEBUG "stli_hostcmd(brdp=%x,channr=%d)\n", | |
2812 | (int) brdp, channr); | |
2813 | #endif | |
2814 | ||
2815 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); | |
2816 | cp = &ap->ctrl; | |
2817 | ||
2818 | /* | |
2819 | * Check if we are waiting for an open completion message. | |
2820 | */ | |
2821 | if (test_bit(ST_OPENING, &portp->state)) { | |
2822 | rc = (int) cp->openarg; | |
2823 | if ((cp->open == 0) && (rc != 0)) { | |
2824 | if (rc > 0) | |
2825 | rc--; | |
2826 | cp->openarg = 0; | |
2827 | portp->rc = rc; | |
2828 | clear_bit(ST_OPENING, &portp->state); | |
2829 | wake_up_interruptible(&portp->raw_wait); | |
2830 | } | |
2831 | } | |
2832 | ||
2833 | /* | |
2834 | * Check if we are waiting for a close completion message. | |
2835 | */ | |
2836 | if (test_bit(ST_CLOSING, &portp->state)) { | |
2837 | rc = (int) cp->closearg; | |
2838 | if ((cp->close == 0) && (rc != 0)) { | |
2839 | if (rc > 0) | |
2840 | rc--; | |
2841 | cp->closearg = 0; | |
2842 | portp->rc = rc; | |
2843 | clear_bit(ST_CLOSING, &portp->state); | |
2844 | wake_up_interruptible(&portp->raw_wait); | |
2845 | } | |
2846 | } | |
2847 | ||
2848 | /* | |
2849 | * Check if we are waiting for a command completion message. We may | |
2850 | * need to copy out the command results associated with this command. | |
2851 | */ | |
2852 | if (test_bit(ST_CMDING, &portp->state)) { | |
2853 | rc = cp->status; | |
2854 | if ((cp->cmd == 0) && (rc != 0)) { | |
2855 | if (rc > 0) | |
2856 | rc--; | |
2857 | if (portp->argp != (void *) NULL) { | |
2858 | memcpy(portp->argp, (void *) &(cp->args[0]), | |
2859 | portp->argsize); | |
2860 | portp->argp = (void *) NULL; | |
2861 | } | |
2862 | cp->status = 0; | |
2863 | portp->rc = rc; | |
2864 | clear_bit(ST_CMDING, &portp->state); | |
2865 | stli_dodelaycmd(portp, cp); | |
2866 | wake_up_interruptible(&portp->raw_wait); | |
2867 | } | |
2868 | } | |
2869 | ||
2870 | /* | |
2871 | * Check for any notification messages ready. This includes lots of | |
2872 | * different types of events - RX chars ready, RX break received, | |
2873 | * TX data low or empty in the slave, modem signals changed state. | |
2874 | */ | |
2875 | donerx = 0; | |
2876 | ||
2877 | if (ap->notify) { | |
2878 | nt = ap->changed; | |
2879 | ap->notify = 0; | |
2880 | tty = portp->tty; | |
2881 | ||
2882 | if (nt.signal & SG_DCD) { | |
2883 | oldsigs = portp->sigs; | |
2884 | portp->sigs = stli_mktiocm(nt.sigvalue); | |
2885 | clear_bit(ST_GETSIGS, &portp->state); | |
2886 | if ((portp->sigs & TIOCM_CD) && | |
2887 | ((oldsigs & TIOCM_CD) == 0)) | |
2888 | wake_up_interruptible(&portp->open_wait); | |
2889 | if ((oldsigs & TIOCM_CD) && | |
2890 | ((portp->sigs & TIOCM_CD) == 0)) { | |
2891 | if (portp->flags & ASYNC_CHECK_CD) { | |
2892 | if (tty) | |
2893 | schedule_work(&portp->tqhangup); | |
2894 | } | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | if (nt.data & DT_TXEMPTY) | |
2899 | clear_bit(ST_TXBUSY, &portp->state); | |
2900 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { | |
2901 | if (tty != (struct tty_struct *) NULL) { | |
2902 | if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && | |
2903 | tty->ldisc.write_wakeup) { | |
2904 | (tty->ldisc.write_wakeup)(tty); | |
2905 | EBRDENABLE(brdp); | |
2906 | } | |
2907 | wake_up_interruptible(&tty->write_wait); | |
2908 | } | |
2909 | } | |
2910 | ||
2911 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { | |
2912 | if (tty != (struct tty_struct *) NULL) { | |
2913 | if (tty->flip.count < TTY_FLIPBUF_SIZE) { | |
2914 | tty->flip.count++; | |
2915 | *tty->flip.flag_buf_ptr++ = TTY_BREAK; | |
2916 | *tty->flip.char_buf_ptr++ = 0; | |
2917 | if (portp->flags & ASYNC_SAK) { | |
2918 | do_SAK(tty); | |
2919 | EBRDENABLE(brdp); | |
2920 | } | |
2921 | tty_schedule_flip(tty); | |
2922 | } | |
2923 | } | |
2924 | } | |
2925 | ||
2926 | if (nt.data & DT_RXBUSY) { | |
2927 | donerx++; | |
2928 | stli_read(brdp, portp); | |
2929 | } | |
2930 | } | |
2931 | ||
2932 | /* | |
2933 | * It might seem odd that we are checking for more RX chars here. | |
2934 | * But, we need to handle the case where the tty buffer was previously | |
2935 | * filled, but we had more characters to pass up. The slave will not | |
2936 | * send any more RX notify messages until the RX buffer has been emptied. | |
2937 | * But it will leave the service bits on (since the buffer is not empty). | |
2938 | * So from here we can try to process more RX chars. | |
2939 | */ | |
2940 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { | |
2941 | clear_bit(ST_RXING, &portp->state); | |
2942 | stli_read(brdp, portp); | |
2943 | } | |
2944 | ||
2945 | return((test_bit(ST_OPENING, &portp->state) || | |
2946 | test_bit(ST_CLOSING, &portp->state) || | |
2947 | test_bit(ST_CMDING, &portp->state) || | |
2948 | test_bit(ST_TXBUSY, &portp->state) || | |
2949 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); | |
2950 | } | |
2951 | ||
2952 | /*****************************************************************************/ | |
2953 | ||
2954 | /* | |
2955 | * Service all ports on a particular board. Assumes that the boards | |
2956 | * shared memory is enabled, and that the page pointer is pointed | |
2957 | * at the cdk header structure. | |
2958 | */ | |
2959 | ||
2960 | static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp) | |
2961 | { | |
2962 | stliport_t *portp; | |
2963 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; | |
2964 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; | |
2965 | unsigned char *slavep; | |
2966 | int bitpos, bitat, bitsize; | |
2967 | int channr, nrdevs, slavebitchange; | |
2968 | ||
2969 | bitsize = brdp->bitsize; | |
2970 | nrdevs = brdp->nrdevs; | |
2971 | ||
2972 | /* | |
2973 | * Check if slave wants any service. Basically we try to do as | |
2974 | * little work as possible here. There are 2 levels of service | |
2975 | * bits. So if there is nothing to do we bail early. We check | |
2976 | * 8 service bits at a time in the inner loop, so we can bypass | |
2977 | * the lot if none of them want service. | |
2978 | */ | |
2979 | memcpy(&hostbits[0], (((unsigned char *) hdrp) + brdp->hostoffset), | |
2980 | bitsize); | |
2981 | ||
2982 | memset(&slavebits[0], 0, bitsize); | |
2983 | slavebitchange = 0; | |
2984 | ||
2985 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
2986 | if (hostbits[bitpos] == 0) | |
2987 | continue; | |
2988 | channr = bitpos * 8; | |
2989 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { | |
2990 | if (hostbits[bitpos] & bitat) { | |
2991 | portp = brdp->ports[(channr - 1)]; | |
2992 | if (stli_hostcmd(brdp, portp)) { | |
2993 | slavebitchange++; | |
2994 | slavebits[bitpos] |= bitat; | |
2995 | } | |
2996 | } | |
2997 | } | |
2998 | } | |
2999 | ||
3000 | /* | |
3001 | * If any of the ports are no longer busy then update them in the | |
3002 | * slave request bits. We need to do this after, since a host port | |
3003 | * service may initiate more slave requests. | |
3004 | */ | |
3005 | if (slavebitchange) { | |
3006 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
3007 | slavep = ((unsigned char *) hdrp) + brdp->slaveoffset; | |
3008 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
3009 | if (slavebits[bitpos]) | |
3010 | slavep[bitpos] &= ~slavebits[bitpos]; | |
3011 | } | |
3012 | } | |
3013 | } | |
3014 | ||
3015 | /*****************************************************************************/ | |
3016 | ||
3017 | /* | |
3018 | * Driver poll routine. This routine polls the boards in use and passes | |
3019 | * messages back up to host when necessary. This is actually very | |
3020 | * CPU efficient, since we will always have the kernel poll clock, it | |
3021 | * adds only a few cycles when idle (since board service can be | |
3022 | * determined very easily), but when loaded generates no interrupts | |
3023 | * (with their expensive associated context change). | |
3024 | */ | |
3025 | ||
3026 | static void stli_poll(unsigned long arg) | |
3027 | { | |
3028 | volatile cdkhdr_t *hdrp; | |
3029 | stlibrd_t *brdp; | |
3030 | int brdnr; | |
3031 | ||
3032 | stli_timerlist.expires = STLI_TIMEOUT; | |
3033 | add_timer(&stli_timerlist); | |
3034 | ||
3035 | /* | |
3036 | * Check each board and do any servicing required. | |
3037 | */ | |
3038 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
3039 | brdp = stli_brds[brdnr]; | |
3040 | if (brdp == (stlibrd_t *) NULL) | |
3041 | continue; | |
3042 | if ((brdp->state & BST_STARTED) == 0) | |
3043 | continue; | |
3044 | ||
3045 | EBRDENABLE(brdp); | |
3046 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
3047 | if (hdrp->hostreq) | |
3048 | stli_brdpoll(brdp, hdrp); | |
3049 | EBRDDISABLE(brdp); | |
3050 | } | |
3051 | } | |
3052 | ||
3053 | /*****************************************************************************/ | |
3054 | ||
3055 | /* | |
3056 | * Translate the termios settings into the port setting structure of | |
3057 | * the slave. | |
3058 | */ | |
3059 | ||
3060 | static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp) | |
3061 | { | |
3062 | #ifdef DEBUG | |
3063 | printk(KERN_DEBUG "stli_mkasyport(portp=%x,pp=%x,tiosp=%d)\n", | |
3064 | (int) portp, (int) pp, (int) tiosp); | |
3065 | #endif | |
3066 | ||
3067 | memset(pp, 0, sizeof(asyport_t)); | |
3068 | ||
3069 | /* | |
3070 | * Start of by setting the baud, char size, parity and stop bit info. | |
3071 | */ | |
3072 | pp->baudout = tiosp->c_cflag & CBAUD; | |
3073 | if (pp->baudout & CBAUDEX) { | |
3074 | pp->baudout &= ~CBAUDEX; | |
3075 | if ((pp->baudout < 1) || (pp->baudout > 4)) | |
3076 | tiosp->c_cflag &= ~CBAUDEX; | |
3077 | else | |
3078 | pp->baudout += 15; | |
3079 | } | |
3080 | pp->baudout = stli_baudrates[pp->baudout]; | |
3081 | if ((tiosp->c_cflag & CBAUD) == B38400) { | |
3082 | if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
3083 | pp->baudout = 57600; | |
3084 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
3085 | pp->baudout = 115200; | |
3086 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
3087 | pp->baudout = 230400; | |
3088 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
3089 | pp->baudout = 460800; | |
3090 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) | |
3091 | pp->baudout = (portp->baud_base / portp->custom_divisor); | |
3092 | } | |
3093 | if (pp->baudout > STL_MAXBAUD) | |
3094 | pp->baudout = STL_MAXBAUD; | |
3095 | pp->baudin = pp->baudout; | |
3096 | ||
3097 | switch (tiosp->c_cflag & CSIZE) { | |
3098 | case CS5: | |
3099 | pp->csize = 5; | |
3100 | break; | |
3101 | case CS6: | |
3102 | pp->csize = 6; | |
3103 | break; | |
3104 | case CS7: | |
3105 | pp->csize = 7; | |
3106 | break; | |
3107 | default: | |
3108 | pp->csize = 8; | |
3109 | break; | |
3110 | } | |
3111 | ||
3112 | if (tiosp->c_cflag & CSTOPB) | |
3113 | pp->stopbs = PT_STOP2; | |
3114 | else | |
3115 | pp->stopbs = PT_STOP1; | |
3116 | ||
3117 | if (tiosp->c_cflag & PARENB) { | |
3118 | if (tiosp->c_cflag & PARODD) | |
3119 | pp->parity = PT_ODDPARITY; | |
3120 | else | |
3121 | pp->parity = PT_EVENPARITY; | |
3122 | } else { | |
3123 | pp->parity = PT_NOPARITY; | |
3124 | } | |
3125 | ||
3126 | /* | |
3127 | * Set up any flow control options enabled. | |
3128 | */ | |
3129 | if (tiosp->c_iflag & IXON) { | |
3130 | pp->flow |= F_IXON; | |
3131 | if (tiosp->c_iflag & IXANY) | |
3132 | pp->flow |= F_IXANY; | |
3133 | } | |
3134 | if (tiosp->c_cflag & CRTSCTS) | |
3135 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); | |
3136 | ||
3137 | pp->startin = tiosp->c_cc[VSTART]; | |
3138 | pp->stopin = tiosp->c_cc[VSTOP]; | |
3139 | pp->startout = tiosp->c_cc[VSTART]; | |
3140 | pp->stopout = tiosp->c_cc[VSTOP]; | |
3141 | ||
3142 | /* | |
3143 | * Set up the RX char marking mask with those RX error types we must | |
3144 | * catch. We can get the slave to help us out a little here, it will | |
3145 | * ignore parity errors and breaks for us, and mark parity errors in | |
3146 | * the data stream. | |
3147 | */ | |
3148 | if (tiosp->c_iflag & IGNPAR) | |
3149 | pp->iflag |= FI_IGNRXERRS; | |
3150 | if (tiosp->c_iflag & IGNBRK) | |
3151 | pp->iflag |= FI_IGNBREAK; | |
3152 | ||
3153 | portp->rxmarkmsk = 0; | |
3154 | if (tiosp->c_iflag & (INPCK | PARMRK)) | |
3155 | pp->iflag |= FI_1MARKRXERRS; | |
3156 | if (tiosp->c_iflag & BRKINT) | |
3157 | portp->rxmarkmsk |= BRKINT; | |
3158 | ||
3159 | /* | |
3160 | * Set up clocal processing as required. | |
3161 | */ | |
3162 | if (tiosp->c_cflag & CLOCAL) | |
3163 | portp->flags &= ~ASYNC_CHECK_CD; | |
3164 | else | |
3165 | portp->flags |= ASYNC_CHECK_CD; | |
3166 | ||
3167 | /* | |
3168 | * Transfer any persistent flags into the asyport structure. | |
3169 | */ | |
3170 | pp->pflag = (portp->pflag & 0xffff); | |
3171 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; | |
3172 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; | |
3173 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; | |
3174 | } | |
3175 | ||
3176 | /*****************************************************************************/ | |
3177 | ||
3178 | /* | |
3179 | * Construct a slave signals structure for setting the DTR and RTS | |
3180 | * signals as specified. | |
3181 | */ | |
3182 | ||
3183 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) | |
3184 | { | |
3185 | #ifdef DEBUG | |
3186 | printk(KERN_DEBUG "stli_mkasysigs(sp=%x,dtr=%d,rts=%d)\n", | |
3187 | (int) sp, dtr, rts); | |
3188 | #endif | |
3189 | ||
3190 | memset(sp, 0, sizeof(asysigs_t)); | |
3191 | if (dtr >= 0) { | |
3192 | sp->signal |= SG_DTR; | |
3193 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); | |
3194 | } | |
3195 | if (rts >= 0) { | |
3196 | sp->signal |= SG_RTS; | |
3197 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); | |
3198 | } | |
3199 | } | |
3200 | ||
3201 | /*****************************************************************************/ | |
3202 | ||
3203 | /* | |
3204 | * Convert the signals returned from the slave into a local TIOCM type | |
3205 | * signals value. We keep them locally in TIOCM format. | |
3206 | */ | |
3207 | ||
3208 | static long stli_mktiocm(unsigned long sigvalue) | |
3209 | { | |
3210 | long tiocm; | |
3211 | ||
3212 | #ifdef DEBUG | |
3213 | printk(KERN_DEBUG "stli_mktiocm(sigvalue=%x)\n", (int) sigvalue); | |
3214 | #endif | |
3215 | ||
3216 | tiocm = 0; | |
3217 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); | |
3218 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); | |
3219 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); | |
3220 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); | |
3221 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); | |
3222 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); | |
3223 | return(tiocm); | |
3224 | } | |
3225 | ||
3226 | /*****************************************************************************/ | |
3227 | ||
3228 | /* | |
3229 | * All panels and ports actually attached have been worked out. All | |
3230 | * we need to do here is set up the appropriate per port data structures. | |
3231 | */ | |
3232 | ||
3233 | static int stli_initports(stlibrd_t *brdp) | |
3234 | { | |
3235 | stliport_t *portp; | |
3236 | int i, panelnr, panelport; | |
3237 | ||
3238 | #ifdef DEBUG | |
3239 | printk(KERN_DEBUG "stli_initports(brdp=%x)\n", (int) brdp); | |
3240 | #endif | |
3241 | ||
3242 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { | |
3243 | portp = (stliport_t *) stli_memalloc(sizeof(stliport_t)); | |
3244 | if (portp == (stliport_t *) NULL) { | |
3245 | printk("STALLION: failed to allocate port structure\n"); | |
3246 | continue; | |
3247 | } | |
3248 | ||
3249 | memset(portp, 0, sizeof(stliport_t)); | |
3250 | portp->magic = STLI_PORTMAGIC; | |
3251 | portp->portnr = i; | |
3252 | portp->brdnr = brdp->brdnr; | |
3253 | portp->panelnr = panelnr; | |
3254 | portp->baud_base = STL_BAUDBASE; | |
3255 | portp->close_delay = STL_CLOSEDELAY; | |
3256 | portp->closing_wait = 30 * HZ; | |
3257 | INIT_WORK(&portp->tqhangup, stli_dohangup, portp); | |
3258 | init_waitqueue_head(&portp->open_wait); | |
3259 | init_waitqueue_head(&portp->close_wait); | |
3260 | init_waitqueue_head(&portp->raw_wait); | |
3261 | panelport++; | |
3262 | if (panelport >= brdp->panels[panelnr]) { | |
3263 | panelport = 0; | |
3264 | panelnr++; | |
3265 | } | |
3266 | brdp->ports[i] = portp; | |
3267 | } | |
3268 | ||
3269 | return(0); | |
3270 | } | |
3271 | ||
3272 | /*****************************************************************************/ | |
3273 | ||
3274 | /* | |
3275 | * All the following routines are board specific hardware operations. | |
3276 | */ | |
3277 | ||
3278 | static void stli_ecpinit(stlibrd_t *brdp) | |
3279 | { | |
3280 | unsigned long memconf; | |
3281 | ||
3282 | #ifdef DEBUG | |
3283 | printk(KERN_DEBUG "stli_ecpinit(brdp=%d)\n", (int) brdp); | |
3284 | #endif | |
3285 | ||
3286 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); | |
3287 | udelay(10); | |
3288 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
3289 | udelay(100); | |
3290 | ||
3291 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; | |
3292 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); | |
3293 | } | |
3294 | ||
3295 | /*****************************************************************************/ | |
3296 | ||
3297 | static void stli_ecpenable(stlibrd_t *brdp) | |
3298 | { | |
3299 | #ifdef DEBUG | |
3300 | printk(KERN_DEBUG "stli_ecpenable(brdp=%x)\n", (int) brdp); | |
3301 | #endif | |
3302 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); | |
3303 | } | |
3304 | ||
3305 | /*****************************************************************************/ | |
3306 | ||
3307 | static void stli_ecpdisable(stlibrd_t *brdp) | |
3308 | { | |
3309 | #ifdef DEBUG | |
3310 | printk(KERN_DEBUG "stli_ecpdisable(brdp=%x)\n", (int) brdp); | |
3311 | #endif | |
3312 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
3313 | } | |
3314 | ||
3315 | /*****************************************************************************/ | |
3316 | ||
3317 | static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3318 | { | |
3319 | void *ptr; | |
3320 | unsigned char val; | |
3321 | ||
3322 | #ifdef DEBUG | |
3323 | printk(KERN_DEBUG "stli_ecpgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, | |
3324 | (int) offset); | |
3325 | #endif | |
3326 | ||
3327 | if (offset > brdp->memsize) { | |
3328 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3329 | "range at line=%d(%d), brd=%d\n", | |
3330 | (int) offset, line, __LINE__, brdp->brdnr); | |
3331 | ptr = NULL; | |
3332 | val = 0; | |
3333 | } else { | |
3334 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); | |
3335 | val = (unsigned char) (offset / ECP_ATPAGESIZE); | |
3336 | } | |
3337 | outb(val, (brdp->iobase + ECP_ATMEMPR)); | |
3338 | return(ptr); | |
3339 | } | |
3340 | ||
3341 | /*****************************************************************************/ | |
3342 | ||
3343 | static void stli_ecpreset(stlibrd_t *brdp) | |
3344 | { | |
3345 | #ifdef DEBUG | |
3346 | printk(KERN_DEBUG "stli_ecpreset(brdp=%x)\n", (int) brdp); | |
3347 | #endif | |
3348 | ||
3349 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); | |
3350 | udelay(10); | |
3351 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
3352 | udelay(500); | |
3353 | } | |
3354 | ||
3355 | /*****************************************************************************/ | |
3356 | ||
3357 | static void stli_ecpintr(stlibrd_t *brdp) | |
3358 | { | |
3359 | #ifdef DEBUG | |
3360 | printk(KERN_DEBUG "stli_ecpintr(brdp=%x)\n", (int) brdp); | |
3361 | #endif | |
3362 | outb(0x1, brdp->iobase); | |
3363 | } | |
3364 | ||
3365 | /*****************************************************************************/ | |
3366 | ||
3367 | /* | |
3368 | * The following set of functions act on ECP EISA boards. | |
3369 | */ | |
3370 | ||
3371 | static void stli_ecpeiinit(stlibrd_t *brdp) | |
3372 | { | |
3373 | unsigned long memconf; | |
3374 | ||
3375 | #ifdef DEBUG | |
3376 | printk(KERN_DEBUG "stli_ecpeiinit(brdp=%x)\n", (int) brdp); | |
3377 | #endif | |
3378 | ||
3379 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
3380 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3381 | udelay(10); | |
3382 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3383 | udelay(500); | |
3384 | ||
3385 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; | |
3386 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); | |
3387 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; | |
3388 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); | |
3389 | } | |
3390 | ||
3391 | /*****************************************************************************/ | |
3392 | ||
3393 | static void stli_ecpeienable(stlibrd_t *brdp) | |
3394 | { | |
3395 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); | |
3396 | } | |
3397 | ||
3398 | /*****************************************************************************/ | |
3399 | ||
3400 | static void stli_ecpeidisable(stlibrd_t *brdp) | |
3401 | { | |
3402 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3403 | } | |
3404 | ||
3405 | /*****************************************************************************/ | |
3406 | ||
3407 | static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3408 | { | |
3409 | void *ptr; | |
3410 | unsigned char val; | |
3411 | ||
3412 | #ifdef DEBUG | |
3413 | printk(KERN_DEBUG "stli_ecpeigetmemptr(brdp=%x,offset=%x,line=%d)\n", | |
3414 | (int) brdp, (int) offset, line); | |
3415 | #endif | |
3416 | ||
3417 | if (offset > brdp->memsize) { | |
3418 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3419 | "range at line=%d(%d), brd=%d\n", | |
3420 | (int) offset, line, __LINE__, brdp->brdnr); | |
3421 | ptr = NULL; | |
3422 | val = 0; | |
3423 | } else { | |
3424 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); | |
3425 | if (offset < ECP_EIPAGESIZE) | |
3426 | val = ECP_EIENABLE; | |
3427 | else | |
3428 | val = ECP_EIENABLE | 0x40; | |
3429 | } | |
3430 | outb(val, (brdp->iobase + ECP_EICONFR)); | |
3431 | return(ptr); | |
3432 | } | |
3433 | ||
3434 | /*****************************************************************************/ | |
3435 | ||
3436 | static void stli_ecpeireset(stlibrd_t *brdp) | |
3437 | { | |
3438 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3439 | udelay(10); | |
3440 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3441 | udelay(500); | |
3442 | } | |
3443 | ||
3444 | /*****************************************************************************/ | |
3445 | ||
3446 | /* | |
3447 | * The following set of functions act on ECP MCA boards. | |
3448 | */ | |
3449 | ||
3450 | static void stli_ecpmcenable(stlibrd_t *brdp) | |
3451 | { | |
3452 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); | |
3453 | } | |
3454 | ||
3455 | /*****************************************************************************/ | |
3456 | ||
3457 | static void stli_ecpmcdisable(stlibrd_t *brdp) | |
3458 | { | |
3459 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
3460 | } | |
3461 | ||
3462 | /*****************************************************************************/ | |
3463 | ||
3464 | static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3465 | { | |
3466 | void *ptr; | |
3467 | unsigned char val; | |
3468 | ||
3469 | if (offset > brdp->memsize) { | |
3470 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3471 | "range at line=%d(%d), brd=%d\n", | |
3472 | (int) offset, line, __LINE__, brdp->brdnr); | |
3473 | ptr = NULL; | |
3474 | val = 0; | |
3475 | } else { | |
3476 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); | |
3477 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; | |
3478 | } | |
3479 | outb(val, (brdp->iobase + ECP_MCCONFR)); | |
3480 | return(ptr); | |
3481 | } | |
3482 | ||
3483 | /*****************************************************************************/ | |
3484 | ||
3485 | static void stli_ecpmcreset(stlibrd_t *brdp) | |
3486 | { | |
3487 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); | |
3488 | udelay(10); | |
3489 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
3490 | udelay(500); | |
3491 | } | |
3492 | ||
3493 | /*****************************************************************************/ | |
3494 | ||
3495 | /* | |
3496 | * The following set of functions act on ECP PCI boards. | |
3497 | */ | |
3498 | ||
3499 | static void stli_ecppciinit(stlibrd_t *brdp) | |
3500 | { | |
3501 | #ifdef DEBUG | |
3502 | printk(KERN_DEBUG "stli_ecppciinit(brdp=%x)\n", (int) brdp); | |
3503 | #endif | |
3504 | ||
3505 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
3506 | udelay(10); | |
3507 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
3508 | udelay(500); | |
3509 | } | |
3510 | ||
3511 | /*****************************************************************************/ | |
3512 | ||
3513 | static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3514 | { | |
3515 | void *ptr; | |
3516 | unsigned char val; | |
3517 | ||
3518 | #ifdef DEBUG | |
3519 | printk(KERN_DEBUG "stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)\n", | |
3520 | (int) brdp, (int) offset, line); | |
3521 | #endif | |
3522 | ||
3523 | if (offset > brdp->memsize) { | |
3524 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3525 | "range at line=%d(%d), board=%d\n", | |
3526 | (int) offset, line, __LINE__, brdp->brdnr); | |
3527 | ptr = NULL; | |
3528 | val = 0; | |
3529 | } else { | |
3530 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); | |
3531 | val = (offset / ECP_PCIPAGESIZE) << 1; | |
3532 | } | |
3533 | outb(val, (brdp->iobase + ECP_PCICONFR)); | |
3534 | return(ptr); | |
3535 | } | |
3536 | ||
3537 | /*****************************************************************************/ | |
3538 | ||
3539 | static void stli_ecppcireset(stlibrd_t *brdp) | |
3540 | { | |
3541 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
3542 | udelay(10); | |
3543 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
3544 | udelay(500); | |
3545 | } | |
3546 | ||
3547 | /*****************************************************************************/ | |
3548 | ||
3549 | /* | |
3550 | * The following routines act on ONboards. | |
3551 | */ | |
3552 | ||
3553 | static void stli_onbinit(stlibrd_t *brdp) | |
3554 | { | |
3555 | unsigned long memconf; | |
3556 | ||
3557 | #ifdef DEBUG | |
3558 | printk(KERN_DEBUG "stli_onbinit(brdp=%d)\n", (int) brdp); | |
3559 | #endif | |
3560 | ||
3561 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); | |
3562 | udelay(10); | |
3563 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
3564 | mdelay(1000); | |
3565 | ||
3566 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; | |
3567 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); | |
3568 | outb(0x1, brdp->iobase); | |
3569 | mdelay(1); | |
3570 | } | |
3571 | ||
3572 | /*****************************************************************************/ | |
3573 | ||
3574 | static void stli_onbenable(stlibrd_t *brdp) | |
3575 | { | |
3576 | #ifdef DEBUG | |
3577 | printk(KERN_DEBUG "stli_onbenable(brdp=%x)\n", (int) brdp); | |
3578 | #endif | |
3579 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); | |
3580 | } | |
3581 | ||
3582 | /*****************************************************************************/ | |
3583 | ||
3584 | static void stli_onbdisable(stlibrd_t *brdp) | |
3585 | { | |
3586 | #ifdef DEBUG | |
3587 | printk(KERN_DEBUG "stli_onbdisable(brdp=%x)\n", (int) brdp); | |
3588 | #endif | |
3589 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); | |
3590 | } | |
3591 | ||
3592 | /*****************************************************************************/ | |
3593 | ||
3594 | static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3595 | { | |
3596 | void *ptr; | |
3597 | ||
3598 | #ifdef DEBUG | |
3599 | printk(KERN_DEBUG "stli_onbgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, | |
3600 | (int) offset); | |
3601 | #endif | |
3602 | ||
3603 | if (offset > brdp->memsize) { | |
3604 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3605 | "range at line=%d(%d), brd=%d\n", | |
3606 | (int) offset, line, __LINE__, brdp->brdnr); | |
3607 | ptr = NULL; | |
3608 | } else { | |
3609 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); | |
3610 | } | |
3611 | return(ptr); | |
3612 | } | |
3613 | ||
3614 | /*****************************************************************************/ | |
3615 | ||
3616 | static void stli_onbreset(stlibrd_t *brdp) | |
3617 | { | |
3618 | ||
3619 | #ifdef DEBUG | |
3620 | printk(KERN_DEBUG "stli_onbreset(brdp=%x)\n", (int) brdp); | |
3621 | #endif | |
3622 | ||
3623 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); | |
3624 | udelay(10); | |
3625 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
3626 | mdelay(1000); | |
3627 | } | |
3628 | ||
3629 | /*****************************************************************************/ | |
3630 | ||
3631 | /* | |
3632 | * The following routines act on ONboard EISA. | |
3633 | */ | |
3634 | ||
3635 | static void stli_onbeinit(stlibrd_t *brdp) | |
3636 | { | |
3637 | unsigned long memconf; | |
3638 | ||
3639 | #ifdef DEBUG | |
3640 | printk(KERN_DEBUG "stli_onbeinit(brdp=%d)\n", (int) brdp); | |
3641 | #endif | |
3642 | ||
3643 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
3644 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3645 | udelay(10); | |
3646 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3647 | mdelay(1000); | |
3648 | ||
3649 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; | |
3650 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); | |
3651 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; | |
3652 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); | |
3653 | outb(0x1, brdp->iobase); | |
3654 | mdelay(1); | |
3655 | } | |
3656 | ||
3657 | /*****************************************************************************/ | |
3658 | ||
3659 | static void stli_onbeenable(stlibrd_t *brdp) | |
3660 | { | |
3661 | #ifdef DEBUG | |
3662 | printk(KERN_DEBUG "stli_onbeenable(brdp=%x)\n", (int) brdp); | |
3663 | #endif | |
3664 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); | |
3665 | } | |
3666 | ||
3667 | /*****************************************************************************/ | |
3668 | ||
3669 | static void stli_onbedisable(stlibrd_t *brdp) | |
3670 | { | |
3671 | #ifdef DEBUG | |
3672 | printk(KERN_DEBUG "stli_onbedisable(brdp=%x)\n", (int) brdp); | |
3673 | #endif | |
3674 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3675 | } | |
3676 | ||
3677 | /*****************************************************************************/ | |
3678 | ||
3679 | static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3680 | { | |
3681 | void *ptr; | |
3682 | unsigned char val; | |
3683 | ||
3684 | #ifdef DEBUG | |
3685 | printk(KERN_DEBUG "stli_onbegetmemptr(brdp=%x,offset=%x,line=%d)\n", | |
3686 | (int) brdp, (int) offset, line); | |
3687 | #endif | |
3688 | ||
3689 | if (offset > brdp->memsize) { | |
3690 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3691 | "range at line=%d(%d), brd=%d\n", | |
3692 | (int) offset, line, __LINE__, brdp->brdnr); | |
3693 | ptr = NULL; | |
3694 | val = 0; | |
3695 | } else { | |
3696 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); | |
3697 | if (offset < ONB_EIPAGESIZE) | |
3698 | val = ONB_EIENABLE; | |
3699 | else | |
3700 | val = ONB_EIENABLE | 0x40; | |
3701 | } | |
3702 | outb(val, (brdp->iobase + ONB_EICONFR)); | |
3703 | return(ptr); | |
3704 | } | |
3705 | ||
3706 | /*****************************************************************************/ | |
3707 | ||
3708 | static void stli_onbereset(stlibrd_t *brdp) | |
3709 | { | |
3710 | ||
3711 | #ifdef DEBUG | |
3712 | printk(KERN_ERR "stli_onbereset(brdp=%x)\n", (int) brdp); | |
3713 | #endif | |
3714 | ||
3715 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3716 | udelay(10); | |
3717 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3718 | mdelay(1000); | |
3719 | } | |
3720 | ||
3721 | /*****************************************************************************/ | |
3722 | ||
3723 | /* | |
3724 | * The following routines act on Brumby boards. | |
3725 | */ | |
3726 | ||
3727 | static void stli_bbyinit(stlibrd_t *brdp) | |
3728 | { | |
3729 | ||
3730 | #ifdef DEBUG | |
3731 | printk(KERN_ERR "stli_bbyinit(brdp=%d)\n", (int) brdp); | |
3732 | #endif | |
3733 | ||
3734 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); | |
3735 | udelay(10); | |
3736 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3737 | mdelay(1000); | |
3738 | outb(0x1, brdp->iobase); | |
3739 | mdelay(1); | |
3740 | } | |
3741 | ||
3742 | /*****************************************************************************/ | |
3743 | ||
3744 | static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3745 | { | |
3746 | void *ptr; | |
3747 | unsigned char val; | |
3748 | ||
3749 | #ifdef DEBUG | |
3750 | printk(KERN_ERR "stli_bbygetmemptr(brdp=%x,offset=%x)\n", (int) brdp, | |
3751 | (int) offset); | |
3752 | #endif | |
3753 | ||
3754 | if (offset > brdp->memsize) { | |
3755 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3756 | "range at line=%d(%d), brd=%d\n", | |
3757 | (int) offset, line, __LINE__, brdp->brdnr); | |
3758 | ptr = NULL; | |
3759 | val = 0; | |
3760 | } else { | |
3761 | ptr = brdp->membase + (offset % BBY_PAGESIZE); | |
3762 | val = (unsigned char) (offset / BBY_PAGESIZE); | |
3763 | } | |
3764 | outb(val, (brdp->iobase + BBY_ATCONFR)); | |
3765 | return(ptr); | |
3766 | } | |
3767 | ||
3768 | /*****************************************************************************/ | |
3769 | ||
3770 | static void stli_bbyreset(stlibrd_t *brdp) | |
3771 | { | |
3772 | ||
3773 | #ifdef DEBUG | |
3774 | printk(KERN_DEBUG "stli_bbyreset(brdp=%x)\n", (int) brdp); | |
3775 | #endif | |
3776 | ||
3777 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); | |
3778 | udelay(10); | |
3779 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3780 | mdelay(1000); | |
3781 | } | |
3782 | ||
3783 | /*****************************************************************************/ | |
3784 | ||
3785 | /* | |
3786 | * The following routines act on original old Stallion boards. | |
3787 | */ | |
3788 | ||
3789 | static void stli_stalinit(stlibrd_t *brdp) | |
3790 | { | |
3791 | ||
3792 | #ifdef DEBUG | |
3793 | printk(KERN_DEBUG "stli_stalinit(brdp=%d)\n", (int) brdp); | |
3794 | #endif | |
3795 | ||
3796 | outb(0x1, brdp->iobase); | |
3797 | mdelay(1000); | |
3798 | } | |
3799 | ||
3800 | /*****************************************************************************/ | |
3801 | ||
3802 | static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3803 | { | |
3804 | void *ptr; | |
3805 | ||
3806 | #ifdef DEBUG | |
3807 | printk(KERN_DEBUG "stli_stalgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, | |
3808 | (int) offset); | |
3809 | #endif | |
3810 | ||
3811 | if (offset > brdp->memsize) { | |
3812 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3813 | "range at line=%d(%d), brd=%d\n", | |
3814 | (int) offset, line, __LINE__, brdp->brdnr); | |
3815 | ptr = NULL; | |
3816 | } else { | |
3817 | ptr = brdp->membase + (offset % STAL_PAGESIZE); | |
3818 | } | |
3819 | return(ptr); | |
3820 | } | |
3821 | ||
3822 | /*****************************************************************************/ | |
3823 | ||
3824 | static void stli_stalreset(stlibrd_t *brdp) | |
3825 | { | |
3826 | volatile unsigned long *vecp; | |
3827 | ||
3828 | #ifdef DEBUG | |
3829 | printk(KERN_DEBUG "stli_stalreset(brdp=%x)\n", (int) brdp); | |
3830 | #endif | |
3831 | ||
3832 | vecp = (volatile unsigned long *) (brdp->membase + 0x30); | |
3833 | *vecp = 0xffff0000; | |
3834 | outb(0, brdp->iobase); | |
3835 | mdelay(1000); | |
3836 | } | |
3837 | ||
3838 | /*****************************************************************************/ | |
3839 | ||
3840 | /* | |
3841 | * Try to find an ECP board and initialize it. This handles only ECP | |
3842 | * board types. | |
3843 | */ | |
3844 | ||
3845 | static int stli_initecp(stlibrd_t *brdp) | |
3846 | { | |
3847 | cdkecpsig_t sig; | |
3848 | cdkecpsig_t *sigsp; | |
3849 | unsigned int status, nxtid; | |
3850 | char *name; | |
3851 | int panelnr, nrports; | |
3852 | ||
3853 | #ifdef DEBUG | |
3854 | printk(KERN_DEBUG "stli_initecp(brdp=%x)\n", (int) brdp); | |
3855 | #endif | |
3856 | ||
3857 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) | |
3858 | return -EIO; | |
3859 | ||
3860 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) | |
3861 | { | |
3862 | release_region(brdp->iobase, brdp->iosize); | |
3863 | return(-ENODEV); | |
3864 | } | |
3865 | ||
3866 | brdp->iosize = ECP_IOSIZE; | |
3867 | ||
3868 | /* | |
3869 | * Based on the specific board type setup the common vars to access | |
3870 | * and enable shared memory. Set all board specific information now | |
3871 | * as well. | |
3872 | */ | |
3873 | switch (brdp->brdtype) { | |
3874 | case BRD_ECP: | |
3875 | brdp->membase = (void *) brdp->memaddr; | |
3876 | brdp->memsize = ECP_MEMSIZE; | |
3877 | brdp->pagesize = ECP_ATPAGESIZE; | |
3878 | brdp->init = stli_ecpinit; | |
3879 | brdp->enable = stli_ecpenable; | |
3880 | brdp->reenable = stli_ecpenable; | |
3881 | brdp->disable = stli_ecpdisable; | |
3882 | brdp->getmemptr = stli_ecpgetmemptr; | |
3883 | brdp->intr = stli_ecpintr; | |
3884 | brdp->reset = stli_ecpreset; | |
3885 | name = "serial(EC8/64)"; | |
3886 | break; | |
3887 | ||
3888 | case BRD_ECPE: | |
3889 | brdp->membase = (void *) brdp->memaddr; | |
3890 | brdp->memsize = ECP_MEMSIZE; | |
3891 | brdp->pagesize = ECP_EIPAGESIZE; | |
3892 | brdp->init = stli_ecpeiinit; | |
3893 | brdp->enable = stli_ecpeienable; | |
3894 | brdp->reenable = stli_ecpeienable; | |
3895 | brdp->disable = stli_ecpeidisable; | |
3896 | brdp->getmemptr = stli_ecpeigetmemptr; | |
3897 | brdp->intr = stli_ecpintr; | |
3898 | brdp->reset = stli_ecpeireset; | |
3899 | name = "serial(EC8/64-EI)"; | |
3900 | break; | |
3901 | ||
3902 | case BRD_ECPMC: | |
3903 | brdp->membase = (void *) brdp->memaddr; | |
3904 | brdp->memsize = ECP_MEMSIZE; | |
3905 | brdp->pagesize = ECP_MCPAGESIZE; | |
3906 | brdp->init = NULL; | |
3907 | brdp->enable = stli_ecpmcenable; | |
3908 | brdp->reenable = stli_ecpmcenable; | |
3909 | brdp->disable = stli_ecpmcdisable; | |
3910 | brdp->getmemptr = stli_ecpmcgetmemptr; | |
3911 | brdp->intr = stli_ecpintr; | |
3912 | brdp->reset = stli_ecpmcreset; | |
3913 | name = "serial(EC8/64-MCA)"; | |
3914 | break; | |
3915 | ||
3916 | case BRD_ECPPCI: | |
3917 | brdp->membase = (void *) brdp->memaddr; | |
3918 | brdp->memsize = ECP_PCIMEMSIZE; | |
3919 | brdp->pagesize = ECP_PCIPAGESIZE; | |
3920 | brdp->init = stli_ecppciinit; | |
3921 | brdp->enable = NULL; | |
3922 | brdp->reenable = NULL; | |
3923 | brdp->disable = NULL; | |
3924 | brdp->getmemptr = stli_ecppcigetmemptr; | |
3925 | brdp->intr = stli_ecpintr; | |
3926 | brdp->reset = stli_ecppcireset; | |
3927 | name = "serial(EC/RA-PCI)"; | |
3928 | break; | |
3929 | ||
3930 | default: | |
3931 | release_region(brdp->iobase, brdp->iosize); | |
3932 | return(-EINVAL); | |
3933 | } | |
3934 | ||
3935 | /* | |
3936 | * The per-board operations structure is all set up, so now let's go | |
3937 | * and get the board operational. Firstly initialize board configuration | |
3938 | * registers. Set the memory mapping info so we can get at the boards | |
3939 | * shared memory. | |
3940 | */ | |
3941 | EBRDINIT(brdp); | |
3942 | ||
3943 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
3944 | if (brdp->membase == (void *) NULL) | |
3945 | { | |
3946 | release_region(brdp->iobase, brdp->iosize); | |
3947 | return(-ENOMEM); | |
3948 | } | |
3949 | ||
3950 | /* | |
3951 | * Now that all specific code is set up, enable the shared memory and | |
3952 | * look for the a signature area that will tell us exactly what board | |
3953 | * this is, and what it is connected to it. | |
3954 | */ | |
3955 | EBRDENABLE(brdp); | |
3956 | sigsp = (cdkecpsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); | |
3957 | memcpy(&sig, sigsp, sizeof(cdkecpsig_t)); | |
3958 | EBRDDISABLE(brdp); | |
3959 | ||
3960 | #if 0 | |
3961 | printk("%s(%d): sig-> magic=%x rom=%x panel=%x,%x,%x,%x,%x,%x,%x,%x\n", | |
3962 | __FILE__, __LINE__, (int) sig.magic, sig.romver, sig.panelid[0], | |
3963 | (int) sig.panelid[1], (int) sig.panelid[2], | |
3964 | (int) sig.panelid[3], (int) sig.panelid[4], | |
3965 | (int) sig.panelid[5], (int) sig.panelid[6], | |
3966 | (int) sig.panelid[7]); | |
3967 | #endif | |
3968 | ||
3969 | if (sig.magic != ECP_MAGIC) | |
3970 | { | |
3971 | release_region(brdp->iobase, brdp->iosize); | |
3972 | return(-ENODEV); | |
3973 | } | |
3974 | ||
3975 | /* | |
3976 | * Scan through the signature looking at the panels connected to the | |
3977 | * board. Calculate the total number of ports as we go. | |
3978 | */ | |
3979 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { | |
3980 | status = sig.panelid[nxtid]; | |
3981 | if ((status & ECH_PNLIDMASK) != nxtid) | |
3982 | break; | |
3983 | ||
3984 | brdp->panelids[panelnr] = status; | |
3985 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; | |
3986 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) | |
3987 | nxtid++; | |
3988 | brdp->panels[panelnr] = nrports; | |
3989 | brdp->nrports += nrports; | |
3990 | nxtid++; | |
3991 | brdp->nrpanels++; | |
3992 | } | |
3993 | ||
3994 | ||
3995 | brdp->state |= BST_FOUND; | |
3996 | return(0); | |
3997 | } | |
3998 | ||
3999 | /*****************************************************************************/ | |
4000 | ||
4001 | /* | |
4002 | * Try to find an ONboard, Brumby or Stallion board and initialize it. | |
4003 | * This handles only these board types. | |
4004 | */ | |
4005 | ||
4006 | static int stli_initonb(stlibrd_t *brdp) | |
4007 | { | |
4008 | cdkonbsig_t sig; | |
4009 | cdkonbsig_t *sigsp; | |
4010 | char *name; | |
4011 | int i; | |
4012 | ||
4013 | #ifdef DEBUG | |
4014 | printk(KERN_DEBUG "stli_initonb(brdp=%x)\n", (int) brdp); | |
4015 | #endif | |
4016 | ||
4017 | /* | |
4018 | * Do a basic sanity check on the IO and memory addresses. | |
4019 | */ | |
4020 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) | |
4021 | return(-ENODEV); | |
4022 | ||
4023 | brdp->iosize = ONB_IOSIZE; | |
4024 | ||
4025 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) | |
4026 | return -EIO; | |
4027 | ||
4028 | /* | |
4029 | * Based on the specific board type setup the common vars to access | |
4030 | * and enable shared memory. Set all board specific information now | |
4031 | * as well. | |
4032 | */ | |
4033 | switch (brdp->brdtype) { | |
4034 | case BRD_ONBOARD: | |
4035 | case BRD_ONBOARD32: | |
4036 | case BRD_ONBOARD2: | |
4037 | case BRD_ONBOARD2_32: | |
4038 | case BRD_ONBOARDRS: | |
4039 | brdp->membase = (void *) brdp->memaddr; | |
4040 | brdp->memsize = ONB_MEMSIZE; | |
4041 | brdp->pagesize = ONB_ATPAGESIZE; | |
4042 | brdp->init = stli_onbinit; | |
4043 | brdp->enable = stli_onbenable; | |
4044 | brdp->reenable = stli_onbenable; | |
4045 | brdp->disable = stli_onbdisable; | |
4046 | brdp->getmemptr = stli_onbgetmemptr; | |
4047 | brdp->intr = stli_ecpintr; | |
4048 | brdp->reset = stli_onbreset; | |
4049 | if (brdp->memaddr > 0x100000) | |
4050 | brdp->enabval = ONB_MEMENABHI; | |
4051 | else | |
4052 | brdp->enabval = ONB_MEMENABLO; | |
4053 | name = "serial(ONBoard)"; | |
4054 | break; | |
4055 | ||
4056 | case BRD_ONBOARDE: | |
4057 | brdp->membase = (void *) brdp->memaddr; | |
4058 | brdp->memsize = ONB_EIMEMSIZE; | |
4059 | brdp->pagesize = ONB_EIPAGESIZE; | |
4060 | brdp->init = stli_onbeinit; | |
4061 | brdp->enable = stli_onbeenable; | |
4062 | brdp->reenable = stli_onbeenable; | |
4063 | brdp->disable = stli_onbedisable; | |
4064 | brdp->getmemptr = stli_onbegetmemptr; | |
4065 | brdp->intr = stli_ecpintr; | |
4066 | brdp->reset = stli_onbereset; | |
4067 | name = "serial(ONBoard/E)"; | |
4068 | break; | |
4069 | ||
4070 | case BRD_BRUMBY4: | |
4071 | case BRD_BRUMBY8: | |
4072 | case BRD_BRUMBY16: | |
4073 | brdp->membase = (void *) brdp->memaddr; | |
4074 | brdp->memsize = BBY_MEMSIZE; | |
4075 | brdp->pagesize = BBY_PAGESIZE; | |
4076 | brdp->init = stli_bbyinit; | |
4077 | brdp->enable = NULL; | |
4078 | brdp->reenable = NULL; | |
4079 | brdp->disable = NULL; | |
4080 | brdp->getmemptr = stli_bbygetmemptr; | |
4081 | brdp->intr = stli_ecpintr; | |
4082 | brdp->reset = stli_bbyreset; | |
4083 | name = "serial(Brumby)"; | |
4084 | break; | |
4085 | ||
4086 | case BRD_STALLION: | |
4087 | brdp->membase = (void *) brdp->memaddr; | |
4088 | brdp->memsize = STAL_MEMSIZE; | |
4089 | brdp->pagesize = STAL_PAGESIZE; | |
4090 | brdp->init = stli_stalinit; | |
4091 | brdp->enable = NULL; | |
4092 | brdp->reenable = NULL; | |
4093 | brdp->disable = NULL; | |
4094 | brdp->getmemptr = stli_stalgetmemptr; | |
4095 | brdp->intr = stli_ecpintr; | |
4096 | brdp->reset = stli_stalreset; | |
4097 | name = "serial(Stallion)"; | |
4098 | break; | |
4099 | ||
4100 | default: | |
4101 | release_region(brdp->iobase, brdp->iosize); | |
4102 | return(-EINVAL); | |
4103 | } | |
4104 | ||
4105 | /* | |
4106 | * The per-board operations structure is all set up, so now let's go | |
4107 | * and get the board operational. Firstly initialize board configuration | |
4108 | * registers. Set the memory mapping info so we can get at the boards | |
4109 | * shared memory. | |
4110 | */ | |
4111 | EBRDINIT(brdp); | |
4112 | ||
4113 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
4114 | if (brdp->membase == (void *) NULL) | |
4115 | { | |
4116 | release_region(brdp->iobase, brdp->iosize); | |
4117 | return(-ENOMEM); | |
4118 | } | |
4119 | ||
4120 | /* | |
4121 | * Now that all specific code is set up, enable the shared memory and | |
4122 | * look for the a signature area that will tell us exactly what board | |
4123 | * this is, and how many ports. | |
4124 | */ | |
4125 | EBRDENABLE(brdp); | |
4126 | sigsp = (cdkonbsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); | |
4127 | memcpy(&sig, sigsp, sizeof(cdkonbsig_t)); | |
4128 | EBRDDISABLE(brdp); | |
4129 | ||
4130 | #if 0 | |
4131 | printk("%s(%d): sig-> magic=%x:%x:%x:%x romver=%x amask=%x:%x:%x\n", | |
4132 | __FILE__, __LINE__, sig.magic0, sig.magic1, sig.magic2, | |
4133 | sig.magic3, sig.romver, sig.amask0, sig.amask1, sig.amask2); | |
4134 | #endif | |
4135 | ||
4136 | if ((sig.magic0 != ONB_MAGIC0) || (sig.magic1 != ONB_MAGIC1) || | |
4137 | (sig.magic2 != ONB_MAGIC2) || (sig.magic3 != ONB_MAGIC3)) | |
4138 | { | |
4139 | release_region(brdp->iobase, brdp->iosize); | |
4140 | return(-ENODEV); | |
4141 | } | |
4142 | ||
4143 | /* | |
4144 | * Scan through the signature alive mask and calculate how many ports | |
4145 | * there are on this board. | |
4146 | */ | |
4147 | brdp->nrpanels = 1; | |
4148 | if (sig.amask1) { | |
4149 | brdp->nrports = 32; | |
4150 | } else { | |
4151 | for (i = 0; (i < 16); i++) { | |
4152 | if (((sig.amask0 << i) & 0x8000) == 0) | |
4153 | break; | |
4154 | } | |
4155 | brdp->nrports = i; | |
4156 | } | |
4157 | brdp->panels[0] = brdp->nrports; | |
4158 | ||
4159 | ||
4160 | brdp->state |= BST_FOUND; | |
4161 | return(0); | |
4162 | } | |
4163 | ||
4164 | /*****************************************************************************/ | |
4165 | ||
4166 | /* | |
4167 | * Start up a running board. This routine is only called after the | |
4168 | * code has been down loaded to the board and is operational. It will | |
4169 | * read in the memory map, and get the show on the road... | |
4170 | */ | |
4171 | ||
4172 | static int stli_startbrd(stlibrd_t *brdp) | |
4173 | { | |
4174 | volatile cdkhdr_t *hdrp; | |
4175 | volatile cdkmem_t *memp; | |
4176 | volatile cdkasy_t *ap; | |
4177 | unsigned long flags; | |
4178 | stliport_t *portp; | |
4179 | int portnr, nrdevs, i, rc; | |
4180 | ||
4181 | #ifdef DEBUG | |
4182 | printk(KERN_DEBUG "stli_startbrd(brdp=%x)\n", (int) brdp); | |
4183 | #endif | |
4184 | ||
4185 | rc = 0; | |
4186 | ||
4187 | save_flags(flags); | |
4188 | cli(); | |
4189 | EBRDENABLE(brdp); | |
4190 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
4191 | nrdevs = hdrp->nrdevs; | |
4192 | ||
4193 | #if 0 | |
4194 | printk("%s(%d): CDK version %d.%d.%d --> " | |
4195 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", | |
4196 | __FILE__, __LINE__, hdrp->ver_release, hdrp->ver_modification, | |
4197 | hdrp->ver_fix, nrdevs, (int) hdrp->memp, (int) hdrp->hostp, | |
4198 | (int) hdrp->slavep); | |
4199 | #endif | |
4200 | ||
4201 | if (nrdevs < (brdp->nrports + 1)) { | |
4202 | printk(KERN_ERR "STALLION: slave failed to allocate memory for " | |
4203 | "all devices, devices=%d\n", nrdevs); | |
4204 | brdp->nrports = nrdevs - 1; | |
4205 | } | |
4206 | brdp->nrdevs = nrdevs; | |
4207 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; | |
4208 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; | |
4209 | brdp->bitsize = (nrdevs + 7) / 8; | |
4210 | memp = (volatile cdkmem_t *) hdrp->memp; | |
4211 | if (((unsigned long) memp) > brdp->memsize) { | |
4212 | printk(KERN_ERR "STALLION: corrupted shared memory region?\n"); | |
4213 | rc = -EIO; | |
4214 | goto stli_donestartup; | |
4215 | } | |
4216 | memp = (volatile cdkmem_t *) EBRDGETMEMPTR(brdp, (unsigned long) memp); | |
4217 | if (memp->dtype != TYP_ASYNCTRL) { | |
4218 | printk(KERN_ERR "STALLION: no slave control device found\n"); | |
4219 | goto stli_donestartup; | |
4220 | } | |
4221 | memp++; | |
4222 | ||
4223 | /* | |
4224 | * Cycle through memory allocation of each port. We are guaranteed to | |
4225 | * have all ports inside the first page of slave window, so no need to | |
4226 | * change pages while reading memory map. | |
4227 | */ | |
4228 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { | |
4229 | if (memp->dtype != TYP_ASYNC) | |
4230 | break; | |
4231 | portp = brdp->ports[portnr]; | |
4232 | if (portp == (stliport_t *) NULL) | |
4233 | break; | |
4234 | portp->devnr = i; | |
4235 | portp->addr = memp->offset; | |
4236 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); | |
4237 | portp->portidx = (unsigned char) (i / 8); | |
4238 | portp->portbit = (unsigned char) (0x1 << (i % 8)); | |
4239 | } | |
4240 | ||
4241 | hdrp->slavereq = 0xff; | |
4242 | ||
4243 | /* | |
4244 | * For each port setup a local copy of the RX and TX buffer offsets | |
4245 | * and sizes. We do this separate from the above, because we need to | |
4246 | * move the shared memory page... | |
4247 | */ | |
4248 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { | |
4249 | portp = brdp->ports[portnr]; | |
4250 | if (portp == (stliport_t *) NULL) | |
4251 | break; | |
4252 | if (portp->addr == 0) | |
4253 | break; | |
4254 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); | |
4255 | if (ap != (volatile cdkasy_t *) NULL) { | |
4256 | portp->rxsize = ap->rxq.size; | |
4257 | portp->txsize = ap->txq.size; | |
4258 | portp->rxoffset = ap->rxq.offset; | |
4259 | portp->txoffset = ap->txq.offset; | |
4260 | } | |
4261 | } | |
4262 | ||
4263 | stli_donestartup: | |
4264 | EBRDDISABLE(brdp); | |
4265 | restore_flags(flags); | |
4266 | ||
4267 | if (rc == 0) | |
4268 | brdp->state |= BST_STARTED; | |
4269 | ||
4270 | if (! stli_timeron) { | |
4271 | stli_timeron++; | |
4272 | stli_timerlist.expires = STLI_TIMEOUT; | |
4273 | add_timer(&stli_timerlist); | |
4274 | } | |
4275 | ||
4276 | return(rc); | |
4277 | } | |
4278 | ||
4279 | /*****************************************************************************/ | |
4280 | ||
4281 | /* | |
4282 | * Probe and initialize the specified board. | |
4283 | */ | |
4284 | ||
4285 | static int __init stli_brdinit(stlibrd_t *brdp) | |
4286 | { | |
4287 | #ifdef DEBUG | |
4288 | printk(KERN_DEBUG "stli_brdinit(brdp=%x)\n", (int) brdp); | |
4289 | #endif | |
4290 | ||
4291 | stli_brds[brdp->brdnr] = brdp; | |
4292 | ||
4293 | switch (brdp->brdtype) { | |
4294 | case BRD_ECP: | |
4295 | case BRD_ECPE: | |
4296 | case BRD_ECPMC: | |
4297 | case BRD_ECPPCI: | |
4298 | stli_initecp(brdp); | |
4299 | break; | |
4300 | case BRD_ONBOARD: | |
4301 | case BRD_ONBOARDE: | |
4302 | case BRD_ONBOARD2: | |
4303 | case BRD_ONBOARD32: | |
4304 | case BRD_ONBOARD2_32: | |
4305 | case BRD_ONBOARDRS: | |
4306 | case BRD_BRUMBY4: | |
4307 | case BRD_BRUMBY8: | |
4308 | case BRD_BRUMBY16: | |
4309 | case BRD_STALLION: | |
4310 | stli_initonb(brdp); | |
4311 | break; | |
4312 | case BRD_EASYIO: | |
4313 | case BRD_ECH: | |
4314 | case BRD_ECHMC: | |
4315 | case BRD_ECHPCI: | |
4316 | printk(KERN_ERR "STALLION: %s board type not supported in " | |
4317 | "this driver\n", stli_brdnames[brdp->brdtype]); | |
4318 | return(ENODEV); | |
4319 | default: | |
4320 | printk(KERN_ERR "STALLION: board=%d is unknown board " | |
4321 | "type=%d\n", brdp->brdnr, brdp->brdtype); | |
4322 | return(ENODEV); | |
4323 | } | |
4324 | ||
4325 | if ((brdp->state & BST_FOUND) == 0) { | |
4326 | printk(KERN_ERR "STALLION: %s board not found, board=%d " | |
4327 | "io=%x mem=%x\n", | |
4328 | stli_brdnames[brdp->brdtype], brdp->brdnr, | |
4329 | brdp->iobase, (int) brdp->memaddr); | |
4330 | return(ENODEV); | |
4331 | } | |
4332 | ||
4333 | stli_initports(brdp); | |
4334 | printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x " | |
4335 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], | |
4336 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, | |
4337 | brdp->nrpanels, brdp->nrports); | |
4338 | return(0); | |
4339 | } | |
4340 | ||
4341 | /*****************************************************************************/ | |
4342 | ||
4343 | /* | |
4344 | * Probe around trying to find where the EISA boards shared memory | |
4345 | * might be. This is a bit if hack, but it is the best we can do. | |
4346 | */ | |
4347 | ||
4348 | static int stli_eisamemprobe(stlibrd_t *brdp) | |
4349 | { | |
4350 | cdkecpsig_t ecpsig, *ecpsigp; | |
4351 | cdkonbsig_t onbsig, *onbsigp; | |
4352 | int i, foundit; | |
4353 | ||
4354 | #ifdef DEBUG | |
4355 | printk(KERN_DEBUG "stli_eisamemprobe(brdp=%x)\n", (int) brdp); | |
4356 | #endif | |
4357 | ||
4358 | /* | |
4359 | * First up we reset the board, to get it into a known state. There | |
4360 | * is only 2 board types here we need to worry about. Don;t use the | |
4361 | * standard board init routine here, it programs up the shared | |
4362 | * memory address, and we don't know it yet... | |
4363 | */ | |
4364 | if (brdp->brdtype == BRD_ECPE) { | |
4365 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
4366 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
4367 | udelay(10); | |
4368 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
4369 | udelay(500); | |
4370 | stli_ecpeienable(brdp); | |
4371 | } else if (brdp->brdtype == BRD_ONBOARDE) { | |
4372 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
4373 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
4374 | udelay(10); | |
4375 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
4376 | mdelay(100); | |
4377 | outb(0x1, brdp->iobase); | |
4378 | mdelay(1); | |
4379 | stli_onbeenable(brdp); | |
4380 | } else { | |
4381 | return(-ENODEV); | |
4382 | } | |
4383 | ||
4384 | foundit = 0; | |
4385 | brdp->memsize = ECP_MEMSIZE; | |
4386 | ||
4387 | /* | |
4388 | * Board shared memory is enabled, so now we have a poke around and | |
4389 | * see if we can find it. | |
4390 | */ | |
4391 | for (i = 0; (i < stli_eisamempsize); i++) { | |
4392 | brdp->memaddr = stli_eisamemprobeaddrs[i]; | |
4393 | brdp->membase = (void *) brdp->memaddr; | |
4394 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
4395 | if (brdp->membase == (void *) NULL) | |
4396 | continue; | |
4397 | ||
4398 | if (brdp->brdtype == BRD_ECPE) { | |
4399 | ecpsigp = (cdkecpsig_t *) stli_ecpeigetmemptr(brdp, | |
4400 | CDK_SIGADDR, __LINE__); | |
4401 | memcpy(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); | |
4402 | if (ecpsig.magic == ECP_MAGIC) | |
4403 | foundit = 1; | |
4404 | } else { | |
4405 | onbsigp = (cdkonbsig_t *) stli_onbegetmemptr(brdp, | |
4406 | CDK_SIGADDR, __LINE__); | |
4407 | memcpy(&onbsig, onbsigp, sizeof(cdkonbsig_t)); | |
4408 | if ((onbsig.magic0 == ONB_MAGIC0) && | |
4409 | (onbsig.magic1 == ONB_MAGIC1) && | |
4410 | (onbsig.magic2 == ONB_MAGIC2) && | |
4411 | (onbsig.magic3 == ONB_MAGIC3)) | |
4412 | foundit = 1; | |
4413 | } | |
4414 | ||
4415 | iounmap(brdp->membase); | |
4416 | if (foundit) | |
4417 | break; | |
4418 | } | |
4419 | ||
4420 | /* | |
4421 | * Regardless of whether we found the shared memory or not we must | |
4422 | * disable the region. After that return success or failure. | |
4423 | */ | |
4424 | if (brdp->brdtype == BRD_ECPE) | |
4425 | stli_ecpeidisable(brdp); | |
4426 | else | |
4427 | stli_onbedisable(brdp); | |
4428 | ||
4429 | if (! foundit) { | |
4430 | brdp->memaddr = 0; | |
4431 | brdp->membase = NULL; | |
4432 | printk(KERN_ERR "STALLION: failed to probe shared memory " | |
4433 | "region for %s in EISA slot=%d\n", | |
4434 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); | |
4435 | return(-ENODEV); | |
4436 | } | |
4437 | return(0); | |
4438 | } | |
4439 | ||
4440 | static int stli_getbrdnr(void) | |
4441 | { | |
4442 | int i; | |
4443 | ||
4444 | for (i = 0; i < STL_MAXBRDS; i++) { | |
4445 | if (!stli_brds[i]) { | |
4446 | if (i >= stli_nrbrds) | |
4447 | stli_nrbrds = i + 1; | |
4448 | return i; | |
4449 | } | |
4450 | } | |
4451 | return -1; | |
4452 | } | |
4453 | ||
4454 | /*****************************************************************************/ | |
4455 | ||
4456 | /* | |
4457 | * Probe around and try to find any EISA boards in system. The biggest | |
4458 | * problem here is finding out what memory address is associated with | |
4459 | * an EISA board after it is found. The registers of the ECPE and | |
4460 | * ONboardE are not readable - so we can't read them from there. We | |
4461 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't | |
4462 | * actually have any way to find out the real value. The best we can | |
4463 | * do is go probing around in the usual places hoping we can find it. | |
4464 | */ | |
4465 | ||
4466 | static int stli_findeisabrds(void) | |
4467 | { | |
4468 | stlibrd_t *brdp; | |
4469 | unsigned int iobase, eid; | |
4470 | int i; | |
4471 | ||
4472 | #ifdef DEBUG | |
4473 | printk(KERN_DEBUG "stli_findeisabrds()\n"); | |
4474 | #endif | |
4475 | ||
4476 | /* | |
4477 | * Firstly check if this is an EISA system. Do this by probing for | |
4478 | * the system board EISA ID. If this is not an EISA system then | |
4479 | * don't bother going any further! | |
4480 | */ | |
4481 | outb(0xff, 0xc80); | |
4482 | if (inb(0xc80) == 0xff) | |
4483 | return(0); | |
4484 | ||
4485 | /* | |
4486 | * Looks like an EISA system, so go searching for EISA boards. | |
4487 | */ | |
4488 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { | |
4489 | outb(0xff, (iobase + 0xc80)); | |
4490 | eid = inb(iobase + 0xc80); | |
4491 | eid |= inb(iobase + 0xc81) << 8; | |
4492 | if (eid != STL_EISAID) | |
4493 | continue; | |
4494 | ||
4495 | /* | |
4496 | * We have found a board. Need to check if this board was | |
4497 | * statically configured already (just in case!). | |
4498 | */ | |
4499 | for (i = 0; (i < STL_MAXBRDS); i++) { | |
4500 | brdp = stli_brds[i]; | |
4501 | if (brdp == (stlibrd_t *) NULL) | |
4502 | continue; | |
4503 | if (brdp->iobase == iobase) | |
4504 | break; | |
4505 | } | |
4506 | if (i < STL_MAXBRDS) | |
4507 | continue; | |
4508 | ||
4509 | /* | |
4510 | * We have found a Stallion board and it is not configured already. | |
4511 | * Allocate a board structure and initialize it. | |
4512 | */ | |
4513 | if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) | |
4514 | return(-ENOMEM); | |
4515 | if ((brdp->brdnr = stli_getbrdnr()) < 0) | |
4516 | return(-ENOMEM); | |
4517 | eid = inb(iobase + 0xc82); | |
4518 | if (eid == ECP_EISAID) | |
4519 | brdp->brdtype = BRD_ECPE; | |
4520 | else if (eid == ONB_EISAID) | |
4521 | brdp->brdtype = BRD_ONBOARDE; | |
4522 | else | |
4523 | brdp->brdtype = BRD_UNKNOWN; | |
4524 | brdp->iobase = iobase; | |
4525 | outb(0x1, (iobase + 0xc84)); | |
4526 | if (stli_eisamemprobe(brdp)) | |
4527 | outb(0, (iobase + 0xc84)); | |
4528 | stli_brdinit(brdp); | |
4529 | } | |
4530 | ||
4531 | return(0); | |
4532 | } | |
4533 | ||
4534 | /*****************************************************************************/ | |
4535 | ||
4536 | /* | |
4537 | * Find the next available board number that is free. | |
4538 | */ | |
4539 | ||
4540 | /*****************************************************************************/ | |
4541 | ||
4542 | #ifdef CONFIG_PCI | |
4543 | ||
4544 | /* | |
4545 | * We have a Stallion board. Allocate a board structure and | |
4546 | * initialize it. Read its IO and MEMORY resources from PCI | |
4547 | * configuration space. | |
4548 | */ | |
4549 | ||
4550 | static int stli_initpcibrd(int brdtype, struct pci_dev *devp) | |
4551 | { | |
4552 | stlibrd_t *brdp; | |
4553 | ||
4554 | #ifdef DEBUG | |
4555 | printk(KERN_DEBUG "stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n", | |
4556 | brdtype, dev->bus->number, dev->devfn); | |
4557 | #endif | |
4558 | ||
4559 | if (pci_enable_device(devp)) | |
4560 | return(-EIO); | |
4561 | if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) | |
4562 | return(-ENOMEM); | |
4563 | if ((brdp->brdnr = stli_getbrdnr()) < 0) { | |
4564 | printk(KERN_INFO "STALLION: too many boards found, " | |
4565 | "maximum supported %d\n", STL_MAXBRDS); | |
4566 | return(0); | |
4567 | } | |
4568 | brdp->brdtype = brdtype; | |
4569 | ||
4570 | #ifdef DEBUG | |
4571 | printk(KERN_DEBUG "%s(%d): BAR[]=%lx,%lx,%lx,%lx\n", __FILE__, __LINE__, | |
4572 | pci_resource_start(devp, 0), | |
4573 | pci_resource_start(devp, 1), | |
4574 | pci_resource_start(devp, 2), | |
4575 | pci_resource_start(devp, 3)); | |
4576 | #endif | |
4577 | ||
4578 | /* | |
4579 | * We have all resources from the board, so lets setup the actual | |
4580 | * board structure now. | |
4581 | */ | |
4582 | brdp->iobase = pci_resource_start(devp, 3); | |
4583 | brdp->memaddr = pci_resource_start(devp, 2); | |
4584 | stli_brdinit(brdp); | |
4585 | ||
4586 | return(0); | |
4587 | } | |
4588 | ||
4589 | /*****************************************************************************/ | |
4590 | ||
4591 | /* | |
4592 | * Find all Stallion PCI boards that might be installed. Initialize each | |
4593 | * one as it is found. | |
4594 | */ | |
4595 | ||
4596 | static int stli_findpcibrds(void) | |
4597 | { | |
4598 | struct pci_dev *dev = NULL; | |
4599 | int rc; | |
4600 | ||
4601 | #ifdef DEBUG | |
4602 | printk("stli_findpcibrds()\n"); | |
4603 | #endif | |
4604 | ||
4605 | while ((dev = pci_find_device(PCI_VENDOR_ID_STALLION, | |
4606 | PCI_DEVICE_ID_ECRA, dev))) { | |
4607 | if ((rc = stli_initpcibrd(BRD_ECPPCI, dev))) | |
4608 | return(rc); | |
4609 | } | |
4610 | ||
4611 | return(0); | |
4612 | } | |
4613 | ||
4614 | #endif | |
4615 | ||
4616 | /*****************************************************************************/ | |
4617 | ||
4618 | /* | |
4619 | * Allocate a new board structure. Fill out the basic info in it. | |
4620 | */ | |
4621 | ||
4622 | static stlibrd_t *stli_allocbrd(void) | |
4623 | { | |
4624 | stlibrd_t *brdp; | |
4625 | ||
4626 | brdp = (stlibrd_t *) stli_memalloc(sizeof(stlibrd_t)); | |
4627 | if (brdp == (stlibrd_t *) NULL) { | |
4628 | printk(KERN_ERR "STALLION: failed to allocate memory " | |
4629 | "(size=%d)\n", sizeof(stlibrd_t)); | |
4630 | return((stlibrd_t *) NULL); | |
4631 | } | |
4632 | ||
4633 | memset(brdp, 0, sizeof(stlibrd_t)); | |
4634 | brdp->magic = STLI_BOARDMAGIC; | |
4635 | return(brdp); | |
4636 | } | |
4637 | ||
4638 | /*****************************************************************************/ | |
4639 | ||
4640 | /* | |
4641 | * Scan through all the boards in the configuration and see what we | |
4642 | * can find. | |
4643 | */ | |
4644 | ||
4645 | static int stli_initbrds(void) | |
4646 | { | |
4647 | stlibrd_t *brdp, *nxtbrdp; | |
4648 | stlconf_t *confp; | |
4649 | int i, j; | |
4650 | ||
4651 | #ifdef DEBUG | |
4652 | printk(KERN_DEBUG "stli_initbrds()\n"); | |
4653 | #endif | |
4654 | ||
4655 | if (stli_nrbrds > STL_MAXBRDS) { | |
4656 | printk(KERN_INFO "STALLION: too many boards in configuration " | |
4657 | "table, truncating to %d\n", STL_MAXBRDS); | |
4658 | stli_nrbrds = STL_MAXBRDS; | |
4659 | } | |
4660 | ||
4661 | /* | |
4662 | * Firstly scan the list of static boards configured. Allocate | |
4663 | * resources and initialize the boards as found. If this is a | |
4664 | * module then let the module args override static configuration. | |
4665 | */ | |
4666 | for (i = 0; (i < stli_nrbrds); i++) { | |
4667 | confp = &stli_brdconf[i]; | |
4668 | #ifdef MODULE | |
4669 | stli_parsebrd(confp, stli_brdsp[i]); | |
4670 | #endif | |
4671 | if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) | |
4672 | return(-ENOMEM); | |
4673 | brdp->brdnr = i; | |
4674 | brdp->brdtype = confp->brdtype; | |
4675 | brdp->iobase = confp->ioaddr1; | |
4676 | brdp->memaddr = confp->memaddr; | |
4677 | stli_brdinit(brdp); | |
4678 | } | |
4679 | ||
4680 | /* | |
4681 | * Static configuration table done, so now use dynamic methods to | |
4682 | * see if any more boards should be configured. | |
4683 | */ | |
4684 | #ifdef MODULE | |
4685 | stli_argbrds(); | |
4686 | #endif | |
dbc6b5f5 | 4687 | if (STLI_EISAPROBE) |
1da177e4 LT |
4688 | stli_findeisabrds(); |
4689 | #ifdef CONFIG_PCI | |
4690 | stli_findpcibrds(); | |
4691 | #endif | |
4692 | ||
4693 | /* | |
4694 | * All found boards are initialized. Now for a little optimization, if | |
4695 | * no boards are sharing the "shared memory" regions then we can just | |
4696 | * leave them all enabled. This is in fact the usual case. | |
4697 | */ | |
4698 | stli_shared = 0; | |
4699 | if (stli_nrbrds > 1) { | |
4700 | for (i = 0; (i < stli_nrbrds); i++) { | |
4701 | brdp = stli_brds[i]; | |
4702 | if (brdp == (stlibrd_t *) NULL) | |
4703 | continue; | |
4704 | for (j = i + 1; (j < stli_nrbrds); j++) { | |
4705 | nxtbrdp = stli_brds[j]; | |
4706 | if (nxtbrdp == (stlibrd_t *) NULL) | |
4707 | continue; | |
4708 | if ((brdp->membase >= nxtbrdp->membase) && | |
4709 | (brdp->membase <= (nxtbrdp->membase + | |
4710 | nxtbrdp->memsize - 1))) { | |
4711 | stli_shared++; | |
4712 | break; | |
4713 | } | |
4714 | } | |
4715 | } | |
4716 | } | |
4717 | ||
4718 | if (stli_shared == 0) { | |
4719 | for (i = 0; (i < stli_nrbrds); i++) { | |
4720 | brdp = stli_brds[i]; | |
4721 | if (brdp == (stlibrd_t *) NULL) | |
4722 | continue; | |
4723 | if (brdp->state & BST_FOUND) { | |
4724 | EBRDENABLE(brdp); | |
4725 | brdp->enable = NULL; | |
4726 | brdp->disable = NULL; | |
4727 | } | |
4728 | } | |
4729 | } | |
4730 | ||
4731 | return(0); | |
4732 | } | |
4733 | ||
4734 | /*****************************************************************************/ | |
4735 | ||
4736 | /* | |
4737 | * Code to handle an "staliomem" read operation. This device is the | |
4738 | * contents of the board shared memory. It is used for down loading | |
4739 | * the slave image (and debugging :-) | |
4740 | */ | |
4741 | ||
4742 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) | |
4743 | { | |
4744 | unsigned long flags; | |
4745 | void *memptr; | |
4746 | stlibrd_t *brdp; | |
4747 | int brdnr, size, n; | |
4748 | ||
4749 | #ifdef DEBUG | |
4750 | printk(KERN_DEBUG "stli_memread(fp=%x,buf=%x,count=%x,offp=%x)\n", | |
4751 | (int) fp, (int) buf, count, (int) offp); | |
4752 | #endif | |
4753 | ||
4754 | brdnr = iminor(fp->f_dentry->d_inode); | |
4755 | if (brdnr >= stli_nrbrds) | |
4756 | return(-ENODEV); | |
4757 | brdp = stli_brds[brdnr]; | |
4758 | if (brdp == (stlibrd_t *) NULL) | |
4759 | return(-ENODEV); | |
4760 | if (brdp->state == 0) | |
4761 | return(-ENODEV); | |
4762 | if (fp->f_pos >= brdp->memsize) | |
4763 | return(0); | |
4764 | ||
4765 | size = MIN(count, (brdp->memsize - fp->f_pos)); | |
4766 | ||
4767 | save_flags(flags); | |
4768 | cli(); | |
4769 | EBRDENABLE(brdp); | |
4770 | while (size > 0) { | |
4771 | memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos); | |
4772 | n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize))); | |
4773 | if (copy_to_user(buf, memptr, n)) { | |
4774 | count = -EFAULT; | |
4775 | goto out; | |
4776 | } | |
4777 | fp->f_pos += n; | |
4778 | buf += n; | |
4779 | size -= n; | |
4780 | } | |
4781 | out: | |
4782 | EBRDDISABLE(brdp); | |
4783 | restore_flags(flags); | |
4784 | ||
4785 | return(count); | |
4786 | } | |
4787 | ||
4788 | /*****************************************************************************/ | |
4789 | ||
4790 | /* | |
4791 | * Code to handle an "staliomem" write operation. This device is the | |
4792 | * contents of the board shared memory. It is used for down loading | |
4793 | * the slave image (and debugging :-) | |
4794 | */ | |
4795 | ||
4796 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) | |
4797 | { | |
4798 | unsigned long flags; | |
4799 | void *memptr; | |
4800 | stlibrd_t *brdp; | |
4801 | char __user *chbuf; | |
4802 | int brdnr, size, n; | |
4803 | ||
4804 | #ifdef DEBUG | |
4805 | printk(KERN_DEBUG "stli_memwrite(fp=%x,buf=%x,count=%x,offp=%x)\n", | |
4806 | (int) fp, (int) buf, count, (int) offp); | |
4807 | #endif | |
4808 | ||
4809 | brdnr = iminor(fp->f_dentry->d_inode); | |
4810 | if (brdnr >= stli_nrbrds) | |
4811 | return(-ENODEV); | |
4812 | brdp = stli_brds[brdnr]; | |
4813 | if (brdp == (stlibrd_t *) NULL) | |
4814 | return(-ENODEV); | |
4815 | if (brdp->state == 0) | |
4816 | return(-ENODEV); | |
4817 | if (fp->f_pos >= brdp->memsize) | |
4818 | return(0); | |
4819 | ||
4820 | chbuf = (char __user *) buf; | |
4821 | size = MIN(count, (brdp->memsize - fp->f_pos)); | |
4822 | ||
4823 | save_flags(flags); | |
4824 | cli(); | |
4825 | EBRDENABLE(brdp); | |
4826 | while (size > 0) { | |
4827 | memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos); | |
4828 | n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize))); | |
4829 | if (copy_from_user(memptr, chbuf, n)) { | |
4830 | count = -EFAULT; | |
4831 | goto out; | |
4832 | } | |
4833 | fp->f_pos += n; | |
4834 | chbuf += n; | |
4835 | size -= n; | |
4836 | } | |
4837 | out: | |
4838 | EBRDDISABLE(brdp); | |
4839 | restore_flags(flags); | |
4840 | ||
4841 | return(count); | |
4842 | } | |
4843 | ||
4844 | /*****************************************************************************/ | |
4845 | ||
4846 | /* | |
4847 | * Return the board stats structure to user app. | |
4848 | */ | |
4849 | ||
4850 | static int stli_getbrdstats(combrd_t __user *bp) | |
4851 | { | |
4852 | stlibrd_t *brdp; | |
4853 | int i; | |
4854 | ||
4855 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) | |
4856 | return -EFAULT; | |
4857 | if (stli_brdstats.brd >= STL_MAXBRDS) | |
4858 | return(-ENODEV); | |
4859 | brdp = stli_brds[stli_brdstats.brd]; | |
4860 | if (brdp == (stlibrd_t *) NULL) | |
4861 | return(-ENODEV); | |
4862 | ||
4863 | memset(&stli_brdstats, 0, sizeof(combrd_t)); | |
4864 | stli_brdstats.brd = brdp->brdnr; | |
4865 | stli_brdstats.type = brdp->brdtype; | |
4866 | stli_brdstats.hwid = 0; | |
4867 | stli_brdstats.state = brdp->state; | |
4868 | stli_brdstats.ioaddr = brdp->iobase; | |
4869 | stli_brdstats.memaddr = brdp->memaddr; | |
4870 | stli_brdstats.nrpanels = brdp->nrpanels; | |
4871 | stli_brdstats.nrports = brdp->nrports; | |
4872 | for (i = 0; (i < brdp->nrpanels); i++) { | |
4873 | stli_brdstats.panels[i].panel = i; | |
4874 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; | |
4875 | stli_brdstats.panels[i].nrports = brdp->panels[i]; | |
4876 | } | |
4877 | ||
4878 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) | |
4879 | return -EFAULT; | |
4880 | return(0); | |
4881 | } | |
4882 | ||
4883 | /*****************************************************************************/ | |
4884 | ||
4885 | /* | |
4886 | * Resolve the referenced port number into a port struct pointer. | |
4887 | */ | |
4888 | ||
4889 | static stliport_t *stli_getport(int brdnr, int panelnr, int portnr) | |
4890 | { | |
4891 | stlibrd_t *brdp; | |
4892 | int i; | |
4893 | ||
4894 | if ((brdnr < 0) || (brdnr >= STL_MAXBRDS)) | |
4895 | return((stliport_t *) NULL); | |
4896 | brdp = stli_brds[brdnr]; | |
4897 | if (brdp == (stlibrd_t *) NULL) | |
4898 | return((stliport_t *) NULL); | |
4899 | for (i = 0; (i < panelnr); i++) | |
4900 | portnr += brdp->panels[i]; | |
4901 | if ((portnr < 0) || (portnr >= brdp->nrports)) | |
4902 | return((stliport_t *) NULL); | |
4903 | return(brdp->ports[portnr]); | |
4904 | } | |
4905 | ||
4906 | /*****************************************************************************/ | |
4907 | ||
4908 | /* | |
4909 | * Return the port stats structure to user app. A NULL port struct | |
4910 | * pointer passed in means that we need to find out from the app | |
4911 | * what port to get stats for (used through board control device). | |
4912 | */ | |
4913 | ||
4914 | static int stli_portcmdstats(stliport_t *portp) | |
4915 | { | |
4916 | unsigned long flags; | |
4917 | stlibrd_t *brdp; | |
4918 | int rc; | |
4919 | ||
4920 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4921 | ||
4922 | if (portp == (stliport_t *) NULL) | |
4923 | return(-ENODEV); | |
4924 | brdp = stli_brds[portp->brdnr]; | |
4925 | if (brdp == (stlibrd_t *) NULL) | |
4926 | return(-ENODEV); | |
4927 | ||
4928 | if (brdp->state & BST_STARTED) { | |
4929 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, | |
4930 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) | |
4931 | return(rc); | |
4932 | } else { | |
4933 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); | |
4934 | } | |
4935 | ||
4936 | stli_comstats.brd = portp->brdnr; | |
4937 | stli_comstats.panel = portp->panelnr; | |
4938 | stli_comstats.port = portp->portnr; | |
4939 | stli_comstats.state = portp->state; | |
4940 | stli_comstats.flags = portp->flags; | |
4941 | ||
4942 | save_flags(flags); | |
4943 | cli(); | |
4944 | if (portp->tty != (struct tty_struct *) NULL) { | |
4945 | if (portp->tty->driver_data == portp) { | |
4946 | stli_comstats.ttystate = portp->tty->flags; | |
4947 | stli_comstats.rxbuffered = portp->tty->flip.count; | |
4948 | if (portp->tty->termios != (struct termios *) NULL) { | |
4949 | stli_comstats.cflags = portp->tty->termios->c_cflag; | |
4950 | stli_comstats.iflags = portp->tty->termios->c_iflag; | |
4951 | stli_comstats.oflags = portp->tty->termios->c_oflag; | |
4952 | stli_comstats.lflags = portp->tty->termios->c_lflag; | |
4953 | } | |
4954 | } | |
4955 | } | |
4956 | restore_flags(flags); | |
4957 | ||
4958 | stli_comstats.txtotal = stli_cdkstats.txchars; | |
4959 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; | |
4960 | stli_comstats.txbuffered = stli_cdkstats.txringq; | |
4961 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; | |
4962 | stli_comstats.rxoverrun = stli_cdkstats.overruns; | |
4963 | stli_comstats.rxparity = stli_cdkstats.parity; | |
4964 | stli_comstats.rxframing = stli_cdkstats.framing; | |
4965 | stli_comstats.rxlost = stli_cdkstats.ringover; | |
4966 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; | |
4967 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; | |
4968 | stli_comstats.txxon = stli_cdkstats.txstart; | |
4969 | stli_comstats.txxoff = stli_cdkstats.txstop; | |
4970 | stli_comstats.rxxon = stli_cdkstats.rxstart; | |
4971 | stli_comstats.rxxoff = stli_cdkstats.rxstop; | |
4972 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; | |
4973 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; | |
4974 | stli_comstats.modem = stli_cdkstats.dcdcnt; | |
4975 | stli_comstats.hwid = stli_cdkstats.hwid; | |
4976 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); | |
4977 | ||
4978 | return(0); | |
4979 | } | |
4980 | ||
4981 | /*****************************************************************************/ | |
4982 | ||
4983 | /* | |
4984 | * Return the port stats structure to user app. A NULL port struct | |
4985 | * pointer passed in means that we need to find out from the app | |
4986 | * what port to get stats for (used through board control device). | |
4987 | */ | |
4988 | ||
4989 | static int stli_getportstats(stliport_t *portp, comstats_t __user *cp) | |
4990 | { | |
4991 | stlibrd_t *brdp; | |
4992 | int rc; | |
4993 | ||
4994 | if (!portp) { | |
4995 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4996 | return -EFAULT; | |
4997 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4998 | stli_comstats.port); | |
4999 | if (!portp) | |
5000 | return -ENODEV; | |
5001 | } | |
5002 | ||
5003 | brdp = stli_brds[portp->brdnr]; | |
5004 | if (!brdp) | |
5005 | return -ENODEV; | |
5006 | ||
5007 | if ((rc = stli_portcmdstats(portp)) < 0) | |
5008 | return rc; | |
5009 | ||
5010 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? | |
5011 | -EFAULT : 0; | |
5012 | } | |
5013 | ||
5014 | /*****************************************************************************/ | |
5015 | ||
5016 | /* | |
5017 | * Clear the port stats structure. We also return it zeroed out... | |
5018 | */ | |
5019 | ||
5020 | static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp) | |
5021 | { | |
5022 | stlibrd_t *brdp; | |
5023 | int rc; | |
5024 | ||
5025 | if (!portp) { | |
5026 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
5027 | return -EFAULT; | |
5028 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
5029 | stli_comstats.port); | |
5030 | if (!portp) | |
5031 | return -ENODEV; | |
5032 | } | |
5033 | ||
5034 | brdp = stli_brds[portp->brdnr]; | |
5035 | if (!brdp) | |
5036 | return -ENODEV; | |
5037 | ||
5038 | if (brdp->state & BST_STARTED) { | |
5039 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) | |
5040 | return rc; | |
5041 | } | |
5042 | ||
5043 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
5044 | stli_comstats.brd = portp->brdnr; | |
5045 | stli_comstats.panel = portp->panelnr; | |
5046 | stli_comstats.port = portp->portnr; | |
5047 | ||
5048 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) | |
5049 | return -EFAULT; | |
5050 | return 0; | |
5051 | } | |
5052 | ||
5053 | /*****************************************************************************/ | |
5054 | ||
5055 | /* | |
5056 | * Return the entire driver ports structure to a user app. | |
5057 | */ | |
5058 | ||
5059 | static int stli_getportstruct(stliport_t __user *arg) | |
5060 | { | |
5061 | stliport_t *portp; | |
5062 | ||
5063 | if (copy_from_user(&stli_dummyport, arg, sizeof(stliport_t))) | |
5064 | return -EFAULT; | |
5065 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, | |
5066 | stli_dummyport.portnr); | |
5067 | if (!portp) | |
5068 | return -ENODEV; | |
5069 | if (copy_to_user(arg, portp, sizeof(stliport_t))) | |
5070 | return -EFAULT; | |
5071 | return 0; | |
5072 | } | |
5073 | ||
5074 | /*****************************************************************************/ | |
5075 | ||
5076 | /* | |
5077 | * Return the entire driver board structure to a user app. | |
5078 | */ | |
5079 | ||
5080 | static int stli_getbrdstruct(stlibrd_t __user *arg) | |
5081 | { | |
5082 | stlibrd_t *brdp; | |
5083 | ||
5084 | if (copy_from_user(&stli_dummybrd, arg, sizeof(stlibrd_t))) | |
5085 | return -EFAULT; | |
5086 | if ((stli_dummybrd.brdnr < 0) || (stli_dummybrd.brdnr >= STL_MAXBRDS)) | |
5087 | return -ENODEV; | |
5088 | brdp = stli_brds[stli_dummybrd.brdnr]; | |
5089 | if (!brdp) | |
5090 | return -ENODEV; | |
5091 | if (copy_to_user(arg, brdp, sizeof(stlibrd_t))) | |
5092 | return -EFAULT; | |
5093 | return 0; | |
5094 | } | |
5095 | ||
5096 | /*****************************************************************************/ | |
5097 | ||
5098 | /* | |
5099 | * The "staliomem" device is also required to do some special operations on | |
5100 | * the board. We need to be able to send an interrupt to the board, | |
5101 | * reset it, and start/stop it. | |
5102 | */ | |
5103 | ||
5104 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg) | |
5105 | { | |
5106 | stlibrd_t *brdp; | |
5107 | int brdnr, rc, done; | |
5108 | void __user *argp = (void __user *)arg; | |
5109 | ||
5110 | #ifdef DEBUG | |
5111 | printk(KERN_DEBUG "stli_memioctl(ip=%x,fp=%x,cmd=%x,arg=%x)\n", | |
5112 | (int) ip, (int) fp, cmd, (int) arg); | |
5113 | #endif | |
5114 | ||
5115 | /* | |
5116 | * First up handle the board independent ioctls. | |
5117 | */ | |
5118 | done = 0; | |
5119 | rc = 0; | |
5120 | ||
5121 | switch (cmd) { | |
5122 | case COM_GETPORTSTATS: | |
5123 | rc = stli_getportstats(NULL, argp); | |
5124 | done++; | |
5125 | break; | |
5126 | case COM_CLRPORTSTATS: | |
5127 | rc = stli_clrportstats(NULL, argp); | |
5128 | done++; | |
5129 | break; | |
5130 | case COM_GETBRDSTATS: | |
5131 | rc = stli_getbrdstats(argp); | |
5132 | done++; | |
5133 | break; | |
5134 | case COM_READPORT: | |
5135 | rc = stli_getportstruct(argp); | |
5136 | done++; | |
5137 | break; | |
5138 | case COM_READBOARD: | |
5139 | rc = stli_getbrdstruct(argp); | |
5140 | done++; | |
5141 | break; | |
5142 | } | |
5143 | ||
5144 | if (done) | |
5145 | return(rc); | |
5146 | ||
5147 | /* | |
5148 | * Now handle the board specific ioctls. These all depend on the | |
5149 | * minor number of the device they were called from. | |
5150 | */ | |
5151 | brdnr = iminor(ip); | |
5152 | if (brdnr >= STL_MAXBRDS) | |
5153 | return(-ENODEV); | |
5154 | brdp = stli_brds[brdnr]; | |
5155 | if (!brdp) | |
5156 | return(-ENODEV); | |
5157 | if (brdp->state == 0) | |
5158 | return(-ENODEV); | |
5159 | ||
5160 | switch (cmd) { | |
5161 | case STL_BINTR: | |
5162 | EBRDINTR(brdp); | |
5163 | break; | |
5164 | case STL_BSTART: | |
5165 | rc = stli_startbrd(brdp); | |
5166 | break; | |
5167 | case STL_BSTOP: | |
5168 | brdp->state &= ~BST_STARTED; | |
5169 | break; | |
5170 | case STL_BRESET: | |
5171 | brdp->state &= ~BST_STARTED; | |
5172 | EBRDRESET(brdp); | |
5173 | if (stli_shared == 0) { | |
5174 | if (brdp->reenable != NULL) | |
5175 | (* brdp->reenable)(brdp); | |
5176 | } | |
5177 | break; | |
5178 | default: | |
5179 | rc = -ENOIOCTLCMD; | |
5180 | break; | |
5181 | } | |
5182 | ||
5183 | return(rc); | |
5184 | } | |
5185 | ||
5186 | static struct tty_operations stli_ops = { | |
5187 | .open = stli_open, | |
5188 | .close = stli_close, | |
5189 | .write = stli_write, | |
5190 | .put_char = stli_putchar, | |
5191 | .flush_chars = stli_flushchars, | |
5192 | .write_room = stli_writeroom, | |
5193 | .chars_in_buffer = stli_charsinbuffer, | |
5194 | .ioctl = stli_ioctl, | |
5195 | .set_termios = stli_settermios, | |
5196 | .throttle = stli_throttle, | |
5197 | .unthrottle = stli_unthrottle, | |
5198 | .stop = stli_stop, | |
5199 | .start = stli_start, | |
5200 | .hangup = stli_hangup, | |
5201 | .flush_buffer = stli_flushbuffer, | |
5202 | .break_ctl = stli_breakctl, | |
5203 | .wait_until_sent = stli_waituntilsent, | |
5204 | .send_xchar = stli_sendxchar, | |
5205 | .read_proc = stli_readproc, | |
5206 | .tiocmget = stli_tiocmget, | |
5207 | .tiocmset = stli_tiocmset, | |
5208 | }; | |
5209 | ||
5210 | /*****************************************************************************/ | |
5211 | ||
5212 | int __init stli_init(void) | |
5213 | { | |
5214 | int i; | |
5215 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); | |
5216 | ||
5217 | stli_initbrds(); | |
5218 | ||
5219 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); | |
5220 | if (!stli_serial) | |
5221 | return -ENOMEM; | |
5222 | ||
5223 | /* | |
5224 | * Allocate a temporary write buffer. | |
5225 | */ | |
5226 | stli_tmpwritebuf = (char *) stli_memalloc(STLI_TXBUFSIZE); | |
5227 | if (stli_tmpwritebuf == (char *) NULL) | |
5228 | printk(KERN_ERR "STALLION: failed to allocate memory " | |
5229 | "(size=%d)\n", STLI_TXBUFSIZE); | |
5230 | stli_txcookbuf = stli_memalloc(STLI_TXBUFSIZE); | |
5231 | if (stli_txcookbuf == (char *) NULL) | |
5232 | printk(KERN_ERR "STALLION: failed to allocate memory " | |
5233 | "(size=%d)\n", STLI_TXBUFSIZE); | |
5234 | ||
5235 | /* | |
5236 | * Set up a character driver for the shared memory region. We need this | |
5237 | * to down load the slave code image. Also it is a useful debugging tool. | |
5238 | */ | |
5239 | if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem)) | |
5240 | printk(KERN_ERR "STALLION: failed to register serial memory " | |
5241 | "device\n"); | |
5242 | ||
5243 | devfs_mk_dir("staliomem"); | |
ca8eca68 | 5244 | istallion_class = class_create(THIS_MODULE, "staliomem"); |
1da177e4 LT |
5245 | for (i = 0; i < 4; i++) { |
5246 | devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR, i), | |
5247 | S_IFCHR | S_IRUSR | S_IWUSR, | |
5248 | "staliomem/%d", i); | |
53f46542 GKH |
5249 | class_device_create(istallion_class, NULL, |
5250 | MKDEV(STL_SIOMEMMAJOR, i), | |
1da177e4 LT |
5251 | NULL, "staliomem%d", i); |
5252 | } | |
5253 | ||
5254 | /* | |
5255 | * Set up the tty driver structure and register us as a driver. | |
5256 | */ | |
5257 | stli_serial->owner = THIS_MODULE; | |
5258 | stli_serial->driver_name = stli_drvname; | |
5259 | stli_serial->name = stli_serialname; | |
5260 | stli_serial->major = STL_SERIALMAJOR; | |
5261 | stli_serial->minor_start = 0; | |
5262 | stli_serial->type = TTY_DRIVER_TYPE_SERIAL; | |
5263 | stli_serial->subtype = SERIAL_TYPE_NORMAL; | |
5264 | stli_serial->init_termios = stli_deftermios; | |
5265 | stli_serial->flags = TTY_DRIVER_REAL_RAW; | |
5266 | tty_set_operations(stli_serial, &stli_ops); | |
5267 | ||
5268 | if (tty_register_driver(stli_serial)) { | |
5269 | put_tty_driver(stli_serial); | |
5270 | printk(KERN_ERR "STALLION: failed to register serial driver\n"); | |
5271 | return -EBUSY; | |
5272 | } | |
5273 | return(0); | |
5274 | } | |
5275 | ||
5276 | /*****************************************************************************/ |