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Wed Mar 4 11:03:09 2009 UTC (15 years, 6 months ago) by niro
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Wed Mar 4 11:03:09 2009 UTC (15 years, 6 months ago) by niro
File MIME type: text/plain
File size: 139898 byte(s)
Tag kernel26-2.6.12-alx-r9
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); |
410 | int stli_eisaprobe = STLI_EISAPROBE; |
411 | |
412 | /* |
413 | * Define the Stallion PCI vendor and device IDs. |
414 | */ |
415 | #ifdef CONFIG_PCI |
416 | #ifndef PCI_VENDOR_ID_STALLION |
417 | #define PCI_VENDOR_ID_STALLION 0x124d |
418 | #endif |
419 | #ifndef PCI_DEVICE_ID_ECRA |
420 | #define PCI_DEVICE_ID_ECRA 0x0004 |
421 | #endif |
422 | |
423 | static struct pci_device_id istallion_pci_tbl[] = { |
424 | { PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
425 | { 0 } |
426 | }; |
427 | MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); |
428 | |
429 | #endif /* CONFIG_PCI */ |
430 | |
431 | /*****************************************************************************/ |
432 | |
433 | /* |
434 | * Hardware configuration info for ECP boards. These defines apply |
435 | * to the directly accessible io ports of the ECP. There is a set of |
436 | * defines for each ECP board type, ISA, EISA, MCA and PCI. |
437 | */ |
438 | #define ECP_IOSIZE 4 |
439 | |
440 | #define ECP_MEMSIZE (128 * 1024) |
441 | #define ECP_PCIMEMSIZE (256 * 1024) |
442 | |
443 | #define ECP_ATPAGESIZE (4 * 1024) |
444 | #define ECP_MCPAGESIZE (4 * 1024) |
445 | #define ECP_EIPAGESIZE (64 * 1024) |
446 | #define ECP_PCIPAGESIZE (64 * 1024) |
447 | |
448 | #define STL_EISAID 0x8c4e |
449 | |
450 | /* |
451 | * Important defines for the ISA class of ECP board. |
452 | */ |
453 | #define ECP_ATIREG 0 |
454 | #define ECP_ATCONFR 1 |
455 | #define ECP_ATMEMAR 2 |
456 | #define ECP_ATMEMPR 3 |
457 | #define ECP_ATSTOP 0x1 |
458 | #define ECP_ATINTENAB 0x10 |
459 | #define ECP_ATENABLE 0x20 |
460 | #define ECP_ATDISABLE 0x00 |
461 | #define ECP_ATADDRMASK 0x3f000 |
462 | #define ECP_ATADDRSHFT 12 |
463 | |
464 | /* |
465 | * Important defines for the EISA class of ECP board. |
466 | */ |
467 | #define ECP_EIIREG 0 |
468 | #define ECP_EIMEMARL 1 |
469 | #define ECP_EICONFR 2 |
470 | #define ECP_EIMEMARH 3 |
471 | #define ECP_EIENABLE 0x1 |
472 | #define ECP_EIDISABLE 0x0 |
473 | #define ECP_EISTOP 0x4 |
474 | #define ECP_EIEDGE 0x00 |
475 | #define ECP_EILEVEL 0x80 |
476 | #define ECP_EIADDRMASKL 0x00ff0000 |
477 | #define ECP_EIADDRSHFTL 16 |
478 | #define ECP_EIADDRMASKH 0xff000000 |
479 | #define ECP_EIADDRSHFTH 24 |
480 | #define ECP_EIBRDENAB 0xc84 |
481 | |
482 | #define ECP_EISAID 0x4 |
483 | |
484 | /* |
485 | * Important defines for the Micro-channel class of ECP board. |
486 | * (It has a lot in common with the ISA boards.) |
487 | */ |
488 | #define ECP_MCIREG 0 |
489 | #define ECP_MCCONFR 1 |
490 | #define ECP_MCSTOP 0x20 |
491 | #define ECP_MCENABLE 0x80 |
492 | #define ECP_MCDISABLE 0x00 |
493 | |
494 | /* |
495 | * Important defines for the PCI class of ECP board. |
496 | * (It has a lot in common with the other ECP boards.) |
497 | */ |
498 | #define ECP_PCIIREG 0 |
499 | #define ECP_PCICONFR 1 |
500 | #define ECP_PCISTOP 0x01 |
501 | |
502 | /* |
503 | * Hardware configuration info for ONboard and Brumby boards. These |
504 | * defines apply to the directly accessible io ports of these boards. |
505 | */ |
506 | #define ONB_IOSIZE 16 |
507 | #define ONB_MEMSIZE (64 * 1024) |
508 | #define ONB_ATPAGESIZE (64 * 1024) |
509 | #define ONB_MCPAGESIZE (64 * 1024) |
510 | #define ONB_EIMEMSIZE (128 * 1024) |
511 | #define ONB_EIPAGESIZE (64 * 1024) |
512 | |
513 | /* |
514 | * Important defines for the ISA class of ONboard board. |
515 | */ |
516 | #define ONB_ATIREG 0 |
517 | #define ONB_ATMEMAR 1 |
518 | #define ONB_ATCONFR 2 |
519 | #define ONB_ATSTOP 0x4 |
520 | #define ONB_ATENABLE 0x01 |
521 | #define ONB_ATDISABLE 0x00 |
522 | #define ONB_ATADDRMASK 0xff0000 |
523 | #define ONB_ATADDRSHFT 16 |
524 | |
525 | #define ONB_MEMENABLO 0 |
526 | #define ONB_MEMENABHI 0x02 |
527 | |
528 | /* |
529 | * Important defines for the EISA class of ONboard board. |
530 | */ |
531 | #define ONB_EIIREG 0 |
532 | #define ONB_EIMEMARL 1 |
533 | #define ONB_EICONFR 2 |
534 | #define ONB_EIMEMARH 3 |
535 | #define ONB_EIENABLE 0x1 |
536 | #define ONB_EIDISABLE 0x0 |
537 | #define ONB_EISTOP 0x4 |
538 | #define ONB_EIEDGE 0x00 |
539 | #define ONB_EILEVEL 0x80 |
540 | #define ONB_EIADDRMASKL 0x00ff0000 |
541 | #define ONB_EIADDRSHFTL 16 |
542 | #define ONB_EIADDRMASKH 0xff000000 |
543 | #define ONB_EIADDRSHFTH 24 |
544 | #define ONB_EIBRDENAB 0xc84 |
545 | |
546 | #define ONB_EISAID 0x1 |
547 | |
548 | /* |
549 | * Important defines for the Brumby boards. They are pretty simple, |
550 | * there is not much that is programmably configurable. |
551 | */ |
552 | #define BBY_IOSIZE 16 |
553 | #define BBY_MEMSIZE (64 * 1024) |
554 | #define BBY_PAGESIZE (16 * 1024) |
555 | |
556 | #define BBY_ATIREG 0 |
557 | #define BBY_ATCONFR 1 |
558 | #define BBY_ATSTOP 0x4 |
559 | |
560 | /* |
561 | * Important defines for the Stallion boards. They are pretty simple, |
562 | * there is not much that is programmably configurable. |
563 | */ |
564 | #define STAL_IOSIZE 16 |
565 | #define STAL_MEMSIZE (64 * 1024) |
566 | #define STAL_PAGESIZE (64 * 1024) |
567 | |
568 | /* |
569 | * Define the set of status register values for EasyConnection panels. |
570 | * The signature will return with the status value for each panel. From |
571 | * this we can determine what is attached to the board - before we have |
572 | * actually down loaded any code to it. |
573 | */ |
574 | #define ECH_PNLSTATUS 2 |
575 | #define ECH_PNL16PORT 0x20 |
576 | #define ECH_PNLIDMASK 0x07 |
577 | #define ECH_PNLXPID 0x40 |
578 | #define ECH_PNLINTRPEND 0x80 |
579 | |
580 | /* |
581 | * Define some macros to do things to the board. Even those these boards |
582 | * are somewhat related there is often significantly different ways of |
583 | * doing some operation on it (like enable, paging, reset, etc). So each |
584 | * board class has a set of functions which do the commonly required |
585 | * operations. The macros below basically just call these functions, |
586 | * generally checking for a NULL function - which means that the board |
587 | * needs nothing done to it to achieve this operation! |
588 | */ |
589 | #define EBRDINIT(brdp) \ |
590 | if (brdp->init != NULL) \ |
591 | (* brdp->init)(brdp) |
592 | |
593 | #define EBRDENABLE(brdp) \ |
594 | if (brdp->enable != NULL) \ |
595 | (* brdp->enable)(brdp); |
596 | |
597 | #define EBRDDISABLE(brdp) \ |
598 | if (brdp->disable != NULL) \ |
599 | (* brdp->disable)(brdp); |
600 | |
601 | #define EBRDINTR(brdp) \ |
602 | if (brdp->intr != NULL) \ |
603 | (* brdp->intr)(brdp); |
604 | |
605 | #define EBRDRESET(brdp) \ |
606 | if (brdp->reset != NULL) \ |
607 | (* brdp->reset)(brdp); |
608 | |
609 | #define EBRDGETMEMPTR(brdp,offset) \ |
610 | (* brdp->getmemptr)(brdp, offset, __LINE__) |
611 | |
612 | /* |
613 | * Define the maximal baud rate, and the default baud base for ports. |
614 | */ |
615 | #define STL_MAXBAUD 460800 |
616 | #define STL_BAUDBASE 115200 |
617 | #define STL_CLOSEDELAY (5 * HZ / 10) |
618 | |
619 | /*****************************************************************************/ |
620 | |
621 | /* |
622 | * Define macros to extract a brd or port number from a minor number. |
623 | */ |
624 | #define MINOR2BRD(min) (((min) & 0xc0) >> 6) |
625 | #define MINOR2PORT(min) ((min) & 0x3f) |
626 | |
627 | /* |
628 | * Define a baud rate table that converts termios baud rate selector |
629 | * into the actual baud rate value. All baud rate calculations are based |
630 | * on the actual baud rate required. |
631 | */ |
632 | static unsigned int stli_baudrates[] = { |
633 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, |
634 | 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600 |
635 | }; |
636 | |
637 | /*****************************************************************************/ |
638 | |
639 | /* |
640 | * Define some handy local macros... |
641 | */ |
642 | #undef MIN |
643 | #define MIN(a,b) (((a) <= (b)) ? (a) : (b)) |
644 | |
645 | #undef TOLOWER |
646 | #define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x)) |
647 | |
648 | /*****************************************************************************/ |
649 | |
650 | /* |
651 | * Prototype all functions in this driver! |
652 | */ |
653 | |
654 | #ifdef MODULE |
655 | static void stli_argbrds(void); |
656 | static int stli_parsebrd(stlconf_t *confp, char **argp); |
657 | |
658 | static unsigned long stli_atol(char *str); |
659 | #endif |
660 | |
661 | int stli_init(void); |
662 | static int stli_open(struct tty_struct *tty, struct file *filp); |
663 | static void stli_close(struct tty_struct *tty, struct file *filp); |
664 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); |
665 | static void stli_putchar(struct tty_struct *tty, unsigned char ch); |
666 | static void stli_flushchars(struct tty_struct *tty); |
667 | static int stli_writeroom(struct tty_struct *tty); |
668 | static int stli_charsinbuffer(struct tty_struct *tty); |
669 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); |
670 | static void stli_settermios(struct tty_struct *tty, struct termios *old); |
671 | static void stli_throttle(struct tty_struct *tty); |
672 | static void stli_unthrottle(struct tty_struct *tty); |
673 | static void stli_stop(struct tty_struct *tty); |
674 | static void stli_start(struct tty_struct *tty); |
675 | static void stli_flushbuffer(struct tty_struct *tty); |
676 | static void stli_breakctl(struct tty_struct *tty, int state); |
677 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); |
678 | static void stli_sendxchar(struct tty_struct *tty, char ch); |
679 | static void stli_hangup(struct tty_struct *tty); |
680 | static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos); |
681 | |
682 | static int stli_brdinit(stlibrd_t *brdp); |
683 | static int stli_startbrd(stlibrd_t *brdp); |
684 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); |
685 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); |
686 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); |
687 | static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp); |
688 | static void stli_poll(unsigned long arg); |
689 | static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp); |
690 | static int stli_initopen(stlibrd_t *brdp, stliport_t *portp); |
691 | static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait); |
692 | static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait); |
693 | static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp); |
694 | static void stli_dohangup(void *arg); |
695 | static int stli_setport(stliport_t *portp); |
696 | static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); |
697 | static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); |
698 | static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp); |
699 | static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp); |
700 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); |
701 | static long stli_mktiocm(unsigned long sigvalue); |
702 | static void stli_read(stlibrd_t *brdp, stliport_t *portp); |
703 | static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp); |
704 | static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp); |
705 | static int stli_getbrdstats(combrd_t __user *bp); |
706 | static int stli_getportstats(stliport_t *portp, comstats_t __user *cp); |
707 | static int stli_portcmdstats(stliport_t *portp); |
708 | static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp); |
709 | static int stli_getportstruct(stliport_t __user *arg); |
710 | static int stli_getbrdstruct(stlibrd_t __user *arg); |
711 | static void *stli_memalloc(int len); |
712 | static stlibrd_t *stli_allocbrd(void); |
713 | |
714 | static void stli_ecpinit(stlibrd_t *brdp); |
715 | static void stli_ecpenable(stlibrd_t *brdp); |
716 | static void stli_ecpdisable(stlibrd_t *brdp); |
717 | static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); |
718 | static void stli_ecpreset(stlibrd_t *brdp); |
719 | static void stli_ecpintr(stlibrd_t *brdp); |
720 | static void stli_ecpeiinit(stlibrd_t *brdp); |
721 | static void stli_ecpeienable(stlibrd_t *brdp); |
722 | static void stli_ecpeidisable(stlibrd_t *brdp); |
723 | static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line); |
724 | static void stli_ecpeireset(stlibrd_t *brdp); |
725 | static void stli_ecpmcenable(stlibrd_t *brdp); |
726 | static void stli_ecpmcdisable(stlibrd_t *brdp); |
727 | static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); |
728 | static void stli_ecpmcreset(stlibrd_t *brdp); |
729 | static void stli_ecppciinit(stlibrd_t *brdp); |
730 | static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line); |
731 | static void stli_ecppcireset(stlibrd_t *brdp); |
732 | |
733 | static void stli_onbinit(stlibrd_t *brdp); |
734 | static void stli_onbenable(stlibrd_t *brdp); |
735 | static void stli_onbdisable(stlibrd_t *brdp); |
736 | static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); |
737 | static void stli_onbreset(stlibrd_t *brdp); |
738 | static void stli_onbeinit(stlibrd_t *brdp); |
739 | static void stli_onbeenable(stlibrd_t *brdp); |
740 | static void stli_onbedisable(stlibrd_t *brdp); |
741 | static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line); |
742 | static void stli_onbereset(stlibrd_t *brdp); |
743 | static void stli_bbyinit(stlibrd_t *brdp); |
744 | static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line); |
745 | static void stli_bbyreset(stlibrd_t *brdp); |
746 | static void stli_stalinit(stlibrd_t *brdp); |
747 | static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); |
748 | static void stli_stalreset(stlibrd_t *brdp); |
749 | |
750 | static stliport_t *stli_getport(int brdnr, int panelnr, int portnr); |
751 | |
752 | static int stli_initecp(stlibrd_t *brdp); |
753 | static int stli_initonb(stlibrd_t *brdp); |
754 | static int stli_eisamemprobe(stlibrd_t *brdp); |
755 | static int stli_initports(stlibrd_t *brdp); |
756 | |
757 | #ifdef CONFIG_PCI |
758 | static int stli_initpcibrd(int brdtype, struct pci_dev *devp); |
759 | #endif |
760 | |
761 | /*****************************************************************************/ |
762 | |
763 | /* |
764 | * Define the driver info for a user level shared memory device. This |
765 | * device will work sort of like the /dev/kmem device - except that it |
766 | * will give access to the shared memory on the Stallion intelligent |
767 | * board. This is also a very useful debugging tool. |
768 | */ |
769 | static struct file_operations stli_fsiomem = { |
770 | .owner = THIS_MODULE, |
771 | .read = stli_memread, |
772 | .write = stli_memwrite, |
773 | .ioctl = stli_memioctl, |
774 | }; |
775 | |
776 | /*****************************************************************************/ |
777 | |
778 | /* |
779 | * Define a timer_list entry for our poll routine. The slave board |
780 | * is polled every so often to see if anything needs doing. This is |
781 | * much cheaper on host cpu than using interrupts. It turns out to |
782 | * not increase character latency by much either... |
783 | */ |
784 | static struct timer_list stli_timerlist = TIMER_INITIALIZER(stli_poll, 0, 0); |
785 | |
786 | static int stli_timeron; |
787 | |
788 | /* |
789 | * Define the calculation for the timeout routine. |
790 | */ |
791 | #define STLI_TIMEOUT (jiffies + 1) |
792 | |
793 | /*****************************************************************************/ |
794 | |
795 | static struct class_simple *istallion_class; |
796 | |
797 | #ifdef MODULE |
798 | |
799 | /* |
800 | * Loadable module initialization stuff. |
801 | */ |
802 | |
803 | static int __init istallion_module_init(void) |
804 | { |
805 | unsigned long flags; |
806 | |
807 | #ifdef DEBUG |
808 | printk("init_module()\n"); |
809 | #endif |
810 | |
811 | save_flags(flags); |
812 | cli(); |
813 | stli_init(); |
814 | restore_flags(flags); |
815 | |
816 | return(0); |
817 | } |
818 | |
819 | /*****************************************************************************/ |
820 | |
821 | static void __exit istallion_module_exit(void) |
822 | { |
823 | stlibrd_t *brdp; |
824 | stliport_t *portp; |
825 | unsigned long flags; |
826 | int i, j; |
827 | |
828 | #ifdef DEBUG |
829 | printk("cleanup_module()\n"); |
830 | #endif |
831 | |
832 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, |
833 | stli_drvversion); |
834 | |
835 | save_flags(flags); |
836 | cli(); |
837 | |
838 | /* |
839 | * Free up all allocated resources used by the ports. This includes |
840 | * memory and interrupts. |
841 | */ |
842 | if (stli_timeron) { |
843 | stli_timeron = 0; |
844 | del_timer(&stli_timerlist); |
845 | } |
846 | |
847 | i = tty_unregister_driver(stli_serial); |
848 | if (i) { |
849 | printk("STALLION: failed to un-register tty driver, " |
850 | "errno=%d\n", -i); |
851 | restore_flags(flags); |
852 | return; |
853 | } |
854 | put_tty_driver(stli_serial); |
855 | for (i = 0; i < 4; i++) { |
856 | devfs_remove("staliomem/%d", i); |
857 | class_simple_device_remove(MKDEV(STL_SIOMEMMAJOR, i)); |
858 | } |
859 | devfs_remove("staliomem"); |
860 | class_simple_destroy(istallion_class); |
861 | if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) |
862 | printk("STALLION: failed to un-register serial memory device, " |
863 | "errno=%d\n", -i); |
864 | if (stli_tmpwritebuf != (char *) NULL) |
865 | kfree(stli_tmpwritebuf); |
866 | if (stli_txcookbuf != (char *) NULL) |
867 | kfree(stli_txcookbuf); |
868 | |
869 | for (i = 0; (i < stli_nrbrds); i++) { |
870 | if ((brdp = stli_brds[i]) == (stlibrd_t *) NULL) |
871 | continue; |
872 | for (j = 0; (j < STL_MAXPORTS); j++) { |
873 | portp = brdp->ports[j]; |
874 | if (portp != (stliport_t *) NULL) { |
875 | if (portp->tty != (struct tty_struct *) NULL) |
876 | tty_hangup(portp->tty); |
877 | kfree(portp); |
878 | } |
879 | } |
880 | |
881 | iounmap(brdp->membase); |
882 | if (brdp->iosize > 0) |
883 | release_region(brdp->iobase, brdp->iosize); |
884 | kfree(brdp); |
885 | stli_brds[i] = (stlibrd_t *) NULL; |
886 | } |
887 | |
888 | restore_flags(flags); |
889 | } |
890 | |
891 | module_init(istallion_module_init); |
892 | module_exit(istallion_module_exit); |
893 | |
894 | /*****************************************************************************/ |
895 | |
896 | /* |
897 | * Check for any arguments passed in on the module load command line. |
898 | */ |
899 | |
900 | static void stli_argbrds(void) |
901 | { |
902 | stlconf_t conf; |
903 | stlibrd_t *brdp; |
904 | int nrargs, i; |
905 | |
906 | #ifdef DEBUG |
907 | printk("stli_argbrds()\n"); |
908 | #endif |
909 | |
910 | nrargs = sizeof(stli_brdsp) / sizeof(char **); |
911 | |
912 | for (i = stli_nrbrds; (i < nrargs); i++) { |
913 | memset(&conf, 0, sizeof(conf)); |
914 | if (stli_parsebrd(&conf, stli_brdsp[i]) == 0) |
915 | continue; |
916 | if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) |
917 | continue; |
918 | stli_nrbrds = i + 1; |
919 | brdp->brdnr = i; |
920 | brdp->brdtype = conf.brdtype; |
921 | brdp->iobase = conf.ioaddr1; |
922 | brdp->memaddr = conf.memaddr; |
923 | stli_brdinit(brdp); |
924 | } |
925 | } |
926 | |
927 | /*****************************************************************************/ |
928 | |
929 | /* |
930 | * Convert an ascii string number into an unsigned long. |
931 | */ |
932 | |
933 | static unsigned long stli_atol(char *str) |
934 | { |
935 | unsigned long val; |
936 | int base, c; |
937 | char *sp; |
938 | |
939 | val = 0; |
940 | sp = str; |
941 | if ((*sp == '0') && (*(sp+1) == 'x')) { |
942 | base = 16; |
943 | sp += 2; |
944 | } else if (*sp == '0') { |
945 | base = 8; |
946 | sp++; |
947 | } else { |
948 | base = 10; |
949 | } |
950 | |
951 | for (; (*sp != 0); sp++) { |
952 | c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0'); |
953 | if ((c < 0) || (c >= base)) { |
954 | printk("STALLION: invalid argument %s\n", str); |
955 | val = 0; |
956 | break; |
957 | } |
958 | val = (val * base) + c; |
959 | } |
960 | return(val); |
961 | } |
962 | |
963 | /*****************************************************************************/ |
964 | |
965 | /* |
966 | * Parse the supplied argument string, into the board conf struct. |
967 | */ |
968 | |
969 | static int stli_parsebrd(stlconf_t *confp, char **argp) |
970 | { |
971 | char *sp; |
972 | int nrbrdnames, i; |
973 | |
974 | #ifdef DEBUG |
975 | printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp); |
976 | #endif |
977 | |
978 | if ((argp[0] == (char *) NULL) || (*argp[0] == 0)) |
979 | return(0); |
980 | |
981 | for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) |
982 | *sp = TOLOWER(*sp); |
983 | |
984 | nrbrdnames = sizeof(stli_brdstr) / sizeof(stlibrdtype_t); |
985 | for (i = 0; (i < nrbrdnames); i++) { |
986 | if (strcmp(stli_brdstr[i].name, argp[0]) == 0) |
987 | break; |
988 | } |
989 | if (i >= nrbrdnames) { |
990 | printk("STALLION: unknown board name, %s?\n", argp[0]); |
991 | return(0); |
992 | } |
993 | |
994 | confp->brdtype = stli_brdstr[i].type; |
995 | if ((argp[1] != (char *) NULL) && (*argp[1] != 0)) |
996 | confp->ioaddr1 = stli_atol(argp[1]); |
997 | if ((argp[2] != (char *) NULL) && (*argp[2] != 0)) |
998 | confp->memaddr = stli_atol(argp[2]); |
999 | return(1); |
1000 | } |
1001 | |
1002 | #endif |
1003 | |
1004 | /*****************************************************************************/ |
1005 | |
1006 | /* |
1007 | * Local driver kernel malloc routine. |
1008 | */ |
1009 | |
1010 | static void *stli_memalloc(int len) |
1011 | { |
1012 | return((void *) kmalloc(len, GFP_KERNEL)); |
1013 | } |
1014 | |
1015 | /*****************************************************************************/ |
1016 | |
1017 | static int stli_open(struct tty_struct *tty, struct file *filp) |
1018 | { |
1019 | stlibrd_t *brdp; |
1020 | stliport_t *portp; |
1021 | unsigned int minordev; |
1022 | int brdnr, portnr, rc; |
1023 | |
1024 | #ifdef DEBUG |
1025 | printk("stli_open(tty=%x,filp=%x): device=%s\n", (int) tty, |
1026 | (int) filp, tty->name); |
1027 | #endif |
1028 | |
1029 | minordev = tty->index; |
1030 | brdnr = MINOR2BRD(minordev); |
1031 | if (brdnr >= stli_nrbrds) |
1032 | return(-ENODEV); |
1033 | brdp = stli_brds[brdnr]; |
1034 | if (brdp == (stlibrd_t *) NULL) |
1035 | return(-ENODEV); |
1036 | if ((brdp->state & BST_STARTED) == 0) |
1037 | return(-ENODEV); |
1038 | portnr = MINOR2PORT(minordev); |
1039 | if ((portnr < 0) || (portnr > brdp->nrports)) |
1040 | return(-ENODEV); |
1041 | |
1042 | portp = brdp->ports[portnr]; |
1043 | if (portp == (stliport_t *) NULL) |
1044 | return(-ENODEV); |
1045 | if (portp->devnr < 1) |
1046 | return(-ENODEV); |
1047 | |
1048 | |
1049 | /* |
1050 | * Check if this port is in the middle of closing. If so then wait |
1051 | * until it is closed then return error status based on flag settings. |
1052 | * The sleep here does not need interrupt protection since the wakeup |
1053 | * for it is done with the same context. |
1054 | */ |
1055 | if (portp->flags & ASYNC_CLOSING) { |
1056 | interruptible_sleep_on(&portp->close_wait); |
1057 | if (portp->flags & ASYNC_HUP_NOTIFY) |
1058 | return(-EAGAIN); |
1059 | return(-ERESTARTSYS); |
1060 | } |
1061 | |
1062 | /* |
1063 | * On the first open of the device setup the port hardware, and |
1064 | * initialize the per port data structure. Since initializing the port |
1065 | * requires several commands to the board we will need to wait for any |
1066 | * other open that is already initializing the port. |
1067 | */ |
1068 | portp->tty = tty; |
1069 | tty->driver_data = portp; |
1070 | portp->refcount++; |
1071 | |
1072 | wait_event_interruptible(portp->raw_wait, |
1073 | !test_bit(ST_INITIALIZING, &portp->state)); |
1074 | if (signal_pending(current)) |
1075 | return(-ERESTARTSYS); |
1076 | |
1077 | if ((portp->flags & ASYNC_INITIALIZED) == 0) { |
1078 | set_bit(ST_INITIALIZING, &portp->state); |
1079 | if ((rc = stli_initopen(brdp, portp)) >= 0) { |
1080 | portp->flags |= ASYNC_INITIALIZED; |
1081 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1082 | } |
1083 | clear_bit(ST_INITIALIZING, &portp->state); |
1084 | wake_up_interruptible(&portp->raw_wait); |
1085 | if (rc < 0) |
1086 | return(rc); |
1087 | } |
1088 | |
1089 | /* |
1090 | * Check if this port is in the middle of closing. If so then wait |
1091 | * until it is closed then return error status, based on flag settings. |
1092 | * The sleep here does not need interrupt protection since the wakeup |
1093 | * for it is done with the same context. |
1094 | */ |
1095 | if (portp->flags & ASYNC_CLOSING) { |
1096 | interruptible_sleep_on(&portp->close_wait); |
1097 | if (portp->flags & ASYNC_HUP_NOTIFY) |
1098 | return(-EAGAIN); |
1099 | return(-ERESTARTSYS); |
1100 | } |
1101 | |
1102 | /* |
1103 | * Based on type of open being done check if it can overlap with any |
1104 | * previous opens still in effect. If we are a normal serial device |
1105 | * then also we might have to wait for carrier. |
1106 | */ |
1107 | if (!(filp->f_flags & O_NONBLOCK)) { |
1108 | if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0) |
1109 | return(rc); |
1110 | } |
1111 | portp->flags |= ASYNC_NORMAL_ACTIVE; |
1112 | return(0); |
1113 | } |
1114 | |
1115 | /*****************************************************************************/ |
1116 | |
1117 | static void stli_close(struct tty_struct *tty, struct file *filp) |
1118 | { |
1119 | stlibrd_t *brdp; |
1120 | stliport_t *portp; |
1121 | unsigned long flags; |
1122 | |
1123 | #ifdef DEBUG |
1124 | printk("stli_close(tty=%x,filp=%x)\n", (int) tty, (int) filp); |
1125 | #endif |
1126 | |
1127 | portp = tty->driver_data; |
1128 | if (portp == (stliport_t *) NULL) |
1129 | return; |
1130 | |
1131 | save_flags(flags); |
1132 | cli(); |
1133 | if (tty_hung_up_p(filp)) { |
1134 | restore_flags(flags); |
1135 | return; |
1136 | } |
1137 | if ((tty->count == 1) && (portp->refcount != 1)) |
1138 | portp->refcount = 1; |
1139 | if (portp->refcount-- > 1) { |
1140 | restore_flags(flags); |
1141 | return; |
1142 | } |
1143 | |
1144 | portp->flags |= ASYNC_CLOSING; |
1145 | |
1146 | /* |
1147 | * May want to wait for data to drain before closing. The BUSY flag |
1148 | * keeps track of whether we are still transmitting or not. It is |
1149 | * updated by messages from the slave - indicating when all chars |
1150 | * really have drained. |
1151 | */ |
1152 | if (tty == stli_txcooktty) |
1153 | stli_flushchars(tty); |
1154 | tty->closing = 1; |
1155 | if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
1156 | tty_wait_until_sent(tty, portp->closing_wait); |
1157 | |
1158 | portp->flags &= ~ASYNC_INITIALIZED; |
1159 | brdp = stli_brds[portp->brdnr]; |
1160 | stli_rawclose(brdp, portp, 0, 0); |
1161 | if (tty->termios->c_cflag & HUPCL) { |
1162 | stli_mkasysigs(&portp->asig, 0, 0); |
1163 | if (test_bit(ST_CMDING, &portp->state)) |
1164 | set_bit(ST_DOSIGS, &portp->state); |
1165 | else |
1166 | stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig, |
1167 | sizeof(asysigs_t), 0); |
1168 | } |
1169 | clear_bit(ST_TXBUSY, &portp->state); |
1170 | clear_bit(ST_RXSTOP, &portp->state); |
1171 | set_bit(TTY_IO_ERROR, &tty->flags); |
1172 | if (tty->ldisc.flush_buffer) |
1173 | (tty->ldisc.flush_buffer)(tty); |
1174 | set_bit(ST_DOFLUSHRX, &portp->state); |
1175 | stli_flushbuffer(tty); |
1176 | |
1177 | tty->closing = 0; |
1178 | portp->tty = (struct tty_struct *) NULL; |
1179 | |
1180 | if (portp->openwaitcnt) { |
1181 | if (portp->close_delay) |
1182 | msleep_interruptible(jiffies_to_msecs(portp->close_delay)); |
1183 | wake_up_interruptible(&portp->open_wait); |
1184 | } |
1185 | |
1186 | portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); |
1187 | wake_up_interruptible(&portp->close_wait); |
1188 | restore_flags(flags); |
1189 | } |
1190 | |
1191 | /*****************************************************************************/ |
1192 | |
1193 | /* |
1194 | * Carry out first open operations on a port. This involves a number of |
1195 | * commands to be sent to the slave. We need to open the port, set the |
1196 | * notification events, set the initial port settings, get and set the |
1197 | * initial signal values. We sleep and wait in between each one. But |
1198 | * this still all happens pretty quickly. |
1199 | */ |
1200 | |
1201 | static int stli_initopen(stlibrd_t *brdp, stliport_t *portp) |
1202 | { |
1203 | struct tty_struct *tty; |
1204 | asynotify_t nt; |
1205 | asyport_t aport; |
1206 | int rc; |
1207 | |
1208 | #ifdef DEBUG |
1209 | printk("stli_initopen(brdp=%x,portp=%x)\n", (int) brdp, (int) portp); |
1210 | #endif |
1211 | |
1212 | if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) |
1213 | return(rc); |
1214 | |
1215 | memset(&nt, 0, sizeof(asynotify_t)); |
1216 | nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); |
1217 | nt.signal = SG_DCD; |
1218 | if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, |
1219 | sizeof(asynotify_t), 0)) < 0) |
1220 | return(rc); |
1221 | |
1222 | tty = portp->tty; |
1223 | if (tty == (struct tty_struct *) NULL) |
1224 | return(-ENODEV); |
1225 | stli_mkasyport(portp, &aport, tty->termios); |
1226 | if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, |
1227 | sizeof(asyport_t), 0)) < 0) |
1228 | return(rc); |
1229 | |
1230 | set_bit(ST_GETSIGS, &portp->state); |
1231 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, |
1232 | sizeof(asysigs_t), 1)) < 0) |
1233 | return(rc); |
1234 | if (test_and_clear_bit(ST_GETSIGS, &portp->state)) |
1235 | portp->sigs = stli_mktiocm(portp->asig.sigvalue); |
1236 | stli_mkasysigs(&portp->asig, 1, 1); |
1237 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, |
1238 | sizeof(asysigs_t), 0)) < 0) |
1239 | return(rc); |
1240 | |
1241 | return(0); |
1242 | } |
1243 | |
1244 | /*****************************************************************************/ |
1245 | |
1246 | /* |
1247 | * Send an open message to the slave. This will sleep waiting for the |
1248 | * acknowledgement, so must have user context. We need to co-ordinate |
1249 | * with close events here, since we don't want open and close events |
1250 | * to overlap. |
1251 | */ |
1252 | |
1253 | static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait) |
1254 | { |
1255 | volatile cdkhdr_t *hdrp; |
1256 | volatile cdkctrl_t *cp; |
1257 | volatile unsigned char *bits; |
1258 | unsigned long flags; |
1259 | int rc; |
1260 | |
1261 | #ifdef DEBUG |
1262 | printk("stli_rawopen(brdp=%x,portp=%x,arg=%x,wait=%d)\n", |
1263 | (int) brdp, (int) portp, (int) arg, wait); |
1264 | #endif |
1265 | |
1266 | /* |
1267 | * Send a message to the slave to open this port. |
1268 | */ |
1269 | save_flags(flags); |
1270 | cli(); |
1271 | |
1272 | /* |
1273 | * Slave is already closing this port. This can happen if a hangup |
1274 | * occurs on this port. So we must wait until it is complete. The |
1275 | * order of opens and closes may not be preserved across shared |
1276 | * memory, so we must wait until it is complete. |
1277 | */ |
1278 | wait_event_interruptible(portp->raw_wait, |
1279 | !test_bit(ST_CLOSING, &portp->state)); |
1280 | if (signal_pending(current)) { |
1281 | restore_flags(flags); |
1282 | return -ERESTARTSYS; |
1283 | } |
1284 | |
1285 | /* |
1286 | * Everything is ready now, so write the open message into shared |
1287 | * memory. Once the message is in set the service bits to say that |
1288 | * this port wants service. |
1289 | */ |
1290 | EBRDENABLE(brdp); |
1291 | cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1292 | cp->openarg = arg; |
1293 | cp->open = 1; |
1294 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1295 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + |
1296 | portp->portidx; |
1297 | *bits |= portp->portbit; |
1298 | EBRDDISABLE(brdp); |
1299 | |
1300 | if (wait == 0) { |
1301 | restore_flags(flags); |
1302 | return(0); |
1303 | } |
1304 | |
1305 | /* |
1306 | * Slave is in action, so now we must wait for the open acknowledgment |
1307 | * to come back. |
1308 | */ |
1309 | rc = 0; |
1310 | set_bit(ST_OPENING, &portp->state); |
1311 | wait_event_interruptible(portp->raw_wait, |
1312 | !test_bit(ST_OPENING, &portp->state)); |
1313 | if (signal_pending(current)) |
1314 | rc = -ERESTARTSYS; |
1315 | restore_flags(flags); |
1316 | |
1317 | if ((rc == 0) && (portp->rc != 0)) |
1318 | rc = -EIO; |
1319 | return(rc); |
1320 | } |
1321 | |
1322 | /*****************************************************************************/ |
1323 | |
1324 | /* |
1325 | * Send a close message to the slave. Normally this will sleep waiting |
1326 | * for the acknowledgement, but if wait parameter is 0 it will not. If |
1327 | * wait is true then must have user context (to sleep). |
1328 | */ |
1329 | |
1330 | static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait) |
1331 | { |
1332 | volatile cdkhdr_t *hdrp; |
1333 | volatile cdkctrl_t *cp; |
1334 | volatile unsigned char *bits; |
1335 | unsigned long flags; |
1336 | int rc; |
1337 | |
1338 | #ifdef DEBUG |
1339 | printk("stli_rawclose(brdp=%x,portp=%x,arg=%x,wait=%d)\n", |
1340 | (int) brdp, (int) portp, (int) arg, wait); |
1341 | #endif |
1342 | |
1343 | save_flags(flags); |
1344 | cli(); |
1345 | |
1346 | /* |
1347 | * Slave is already closing this port. This can happen if a hangup |
1348 | * occurs on this port. |
1349 | */ |
1350 | if (wait) { |
1351 | wait_event_interruptible(portp->raw_wait, |
1352 | !test_bit(ST_CLOSING, &portp->state)); |
1353 | if (signal_pending(current)) { |
1354 | restore_flags(flags); |
1355 | return -ERESTARTSYS; |
1356 | } |
1357 | } |
1358 | |
1359 | /* |
1360 | * Write the close command into shared memory. |
1361 | */ |
1362 | EBRDENABLE(brdp); |
1363 | cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1364 | cp->closearg = arg; |
1365 | cp->close = 1; |
1366 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1367 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + |
1368 | portp->portidx; |
1369 | *bits |= portp->portbit; |
1370 | EBRDDISABLE(brdp); |
1371 | |
1372 | set_bit(ST_CLOSING, &portp->state); |
1373 | if (wait == 0) { |
1374 | restore_flags(flags); |
1375 | return(0); |
1376 | } |
1377 | |
1378 | /* |
1379 | * Slave is in action, so now we must wait for the open acknowledgment |
1380 | * to come back. |
1381 | */ |
1382 | rc = 0; |
1383 | wait_event_interruptible(portp->raw_wait, |
1384 | !test_bit(ST_CLOSING, &portp->state)); |
1385 | if (signal_pending(current)) |
1386 | rc = -ERESTARTSYS; |
1387 | restore_flags(flags); |
1388 | |
1389 | if ((rc == 0) && (portp->rc != 0)) |
1390 | rc = -EIO; |
1391 | return(rc); |
1392 | } |
1393 | |
1394 | /*****************************************************************************/ |
1395 | |
1396 | /* |
1397 | * Send a command to the slave and wait for the response. This must |
1398 | * have user context (it sleeps). This routine is generic in that it |
1399 | * can send any type of command. Its purpose is to wait for that command |
1400 | * to complete (as opposed to initiating the command then returning). |
1401 | */ |
1402 | |
1403 | static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) |
1404 | { |
1405 | unsigned long flags; |
1406 | |
1407 | #ifdef DEBUG |
1408 | printk("stli_cmdwait(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d," |
1409 | "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd, |
1410 | (int) arg, size, copyback); |
1411 | #endif |
1412 | |
1413 | save_flags(flags); |
1414 | cli(); |
1415 | wait_event_interruptible(portp->raw_wait, |
1416 | !test_bit(ST_CMDING, &portp->state)); |
1417 | if (signal_pending(current)) { |
1418 | restore_flags(flags); |
1419 | return -ERESTARTSYS; |
1420 | } |
1421 | |
1422 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); |
1423 | |
1424 | wait_event_interruptible(portp->raw_wait, |
1425 | !test_bit(ST_CMDING, &portp->state)); |
1426 | if (signal_pending(current)) { |
1427 | restore_flags(flags); |
1428 | return -ERESTARTSYS; |
1429 | } |
1430 | restore_flags(flags); |
1431 | |
1432 | if (portp->rc != 0) |
1433 | return(-EIO); |
1434 | return(0); |
1435 | } |
1436 | |
1437 | /*****************************************************************************/ |
1438 | |
1439 | /* |
1440 | * Send the termios settings for this port to the slave. This sleeps |
1441 | * waiting for the command to complete - so must have user context. |
1442 | */ |
1443 | |
1444 | static int stli_setport(stliport_t *portp) |
1445 | { |
1446 | stlibrd_t *brdp; |
1447 | asyport_t aport; |
1448 | |
1449 | #ifdef DEBUG |
1450 | printk("stli_setport(portp=%x)\n", (int) portp); |
1451 | #endif |
1452 | |
1453 | if (portp == (stliport_t *) NULL) |
1454 | return(-ENODEV); |
1455 | if (portp->tty == (struct tty_struct *) NULL) |
1456 | return(-ENODEV); |
1457 | if ((portp->brdnr < 0) && (portp->brdnr >= stli_nrbrds)) |
1458 | return(-ENODEV); |
1459 | brdp = stli_brds[portp->brdnr]; |
1460 | if (brdp == (stlibrd_t *) NULL) |
1461 | return(-ENODEV); |
1462 | |
1463 | stli_mkasyport(portp, &aport, portp->tty->termios); |
1464 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); |
1465 | } |
1466 | |
1467 | /*****************************************************************************/ |
1468 | |
1469 | /* |
1470 | * Possibly need to wait for carrier (DCD signal) to come high. Say |
1471 | * maybe because if we are clocal then we don't need to wait... |
1472 | */ |
1473 | |
1474 | static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp) |
1475 | { |
1476 | unsigned long flags; |
1477 | int rc, doclocal; |
1478 | |
1479 | #ifdef DEBUG |
1480 | printk("stli_waitcarrier(brdp=%x,portp=%x,filp=%x)\n", |
1481 | (int) brdp, (int) portp, (int) filp); |
1482 | #endif |
1483 | |
1484 | rc = 0; |
1485 | doclocal = 0; |
1486 | |
1487 | if (portp->tty->termios->c_cflag & CLOCAL) |
1488 | doclocal++; |
1489 | |
1490 | save_flags(flags); |
1491 | cli(); |
1492 | portp->openwaitcnt++; |
1493 | if (! tty_hung_up_p(filp)) |
1494 | portp->refcount--; |
1495 | |
1496 | for (;;) { |
1497 | stli_mkasysigs(&portp->asig, 1, 1); |
1498 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, |
1499 | &portp->asig, sizeof(asysigs_t), 0)) < 0) |
1500 | break; |
1501 | if (tty_hung_up_p(filp) || |
1502 | ((portp->flags & ASYNC_INITIALIZED) == 0)) { |
1503 | if (portp->flags & ASYNC_HUP_NOTIFY) |
1504 | rc = -EBUSY; |
1505 | else |
1506 | rc = -ERESTARTSYS; |
1507 | break; |
1508 | } |
1509 | if (((portp->flags & ASYNC_CLOSING) == 0) && |
1510 | (doclocal || (portp->sigs & TIOCM_CD))) { |
1511 | break; |
1512 | } |
1513 | if (signal_pending(current)) { |
1514 | rc = -ERESTARTSYS; |
1515 | break; |
1516 | } |
1517 | interruptible_sleep_on(&portp->open_wait); |
1518 | } |
1519 | |
1520 | if (! tty_hung_up_p(filp)) |
1521 | portp->refcount++; |
1522 | portp->openwaitcnt--; |
1523 | restore_flags(flags); |
1524 | |
1525 | return(rc); |
1526 | } |
1527 | |
1528 | /*****************************************************************************/ |
1529 | |
1530 | /* |
1531 | * Write routine. Take the data and put it in the shared memory ring |
1532 | * queue. If port is not already sending chars then need to mark the |
1533 | * service bits for this port. |
1534 | */ |
1535 | |
1536 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1537 | { |
1538 | volatile cdkasy_t *ap; |
1539 | volatile cdkhdr_t *hdrp; |
1540 | volatile unsigned char *bits; |
1541 | unsigned char *shbuf, *chbuf; |
1542 | stliport_t *portp; |
1543 | stlibrd_t *brdp; |
1544 | unsigned int len, stlen, head, tail, size; |
1545 | unsigned long flags; |
1546 | |
1547 | #ifdef DEBUG |
1548 | printk("stli_write(tty=%x,buf=%x,count=%d)\n", |
1549 | (int) tty, (int) buf, count); |
1550 | #endif |
1551 | |
1552 | if ((tty == (struct tty_struct *) NULL) || |
1553 | (stli_tmpwritebuf == (char *) NULL)) |
1554 | return(0); |
1555 | if (tty == stli_txcooktty) |
1556 | stli_flushchars(tty); |
1557 | portp = tty->driver_data; |
1558 | if (portp == (stliport_t *) NULL) |
1559 | return(0); |
1560 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
1561 | return(0); |
1562 | brdp = stli_brds[portp->brdnr]; |
1563 | if (brdp == (stlibrd_t *) NULL) |
1564 | return(0); |
1565 | chbuf = (unsigned char *) buf; |
1566 | |
1567 | /* |
1568 | * All data is now local, shove as much as possible into shared memory. |
1569 | */ |
1570 | save_flags(flags); |
1571 | cli(); |
1572 | EBRDENABLE(brdp); |
1573 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); |
1574 | head = (unsigned int) ap->txq.head; |
1575 | tail = (unsigned int) ap->txq.tail; |
1576 | if (tail != ((unsigned int) ap->txq.tail)) |
1577 | tail = (unsigned int) ap->txq.tail; |
1578 | size = portp->txsize; |
1579 | if (head >= tail) { |
1580 | len = size - (head - tail) - 1; |
1581 | stlen = size - head; |
1582 | } else { |
1583 | len = tail - head - 1; |
1584 | stlen = len; |
1585 | } |
1586 | |
1587 | len = MIN(len, count); |
1588 | count = 0; |
1589 | shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1590 | |
1591 | while (len > 0) { |
1592 | stlen = MIN(len, stlen); |
1593 | memcpy((shbuf + head), chbuf, stlen); |
1594 | chbuf += stlen; |
1595 | len -= stlen; |
1596 | count += stlen; |
1597 | head += stlen; |
1598 | if (head >= size) { |
1599 | head = 0; |
1600 | stlen = tail; |
1601 | } |
1602 | } |
1603 | |
1604 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); |
1605 | ap->txq.head = head; |
1606 | if (test_bit(ST_TXBUSY, &portp->state)) { |
1607 | if (ap->changed.data & DT_TXEMPTY) |
1608 | ap->changed.data &= ~DT_TXEMPTY; |
1609 | } |
1610 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1611 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + |
1612 | portp->portidx; |
1613 | *bits |= portp->portbit; |
1614 | set_bit(ST_TXBUSY, &portp->state); |
1615 | EBRDDISABLE(brdp); |
1616 | |
1617 | restore_flags(flags); |
1618 | |
1619 | return(count); |
1620 | } |
1621 | |
1622 | /*****************************************************************************/ |
1623 | |
1624 | /* |
1625 | * Output a single character. We put it into a temporary local buffer |
1626 | * (for speed) then write out that buffer when the flushchars routine |
1627 | * is called. There is a safety catch here so that if some other port |
1628 | * writes chars before the current buffer has been, then we write them |
1629 | * first them do the new ports. |
1630 | */ |
1631 | |
1632 | static void stli_putchar(struct tty_struct *tty, unsigned char ch) |
1633 | { |
1634 | #ifdef DEBUG |
1635 | printk("stli_putchar(tty=%x,ch=%x)\n", (int) tty, (int) ch); |
1636 | #endif |
1637 | |
1638 | if (tty == (struct tty_struct *) NULL) |
1639 | return; |
1640 | if (tty != stli_txcooktty) { |
1641 | if (stli_txcooktty != (struct tty_struct *) NULL) |
1642 | stli_flushchars(stli_txcooktty); |
1643 | stli_txcooktty = tty; |
1644 | } |
1645 | |
1646 | stli_txcookbuf[stli_txcooksize++] = ch; |
1647 | } |
1648 | |
1649 | /*****************************************************************************/ |
1650 | |
1651 | /* |
1652 | * Transfer characters from the local TX cooking buffer to the board. |
1653 | * We sort of ignore the tty that gets passed in here. We rely on the |
1654 | * info stored with the TX cook buffer to tell us which port to flush |
1655 | * the data on. In any case we clean out the TX cook buffer, for re-use |
1656 | * by someone else. |
1657 | */ |
1658 | |
1659 | static void stli_flushchars(struct tty_struct *tty) |
1660 | { |
1661 | volatile cdkhdr_t *hdrp; |
1662 | volatile unsigned char *bits; |
1663 | volatile cdkasy_t *ap; |
1664 | struct tty_struct *cooktty; |
1665 | stliport_t *portp; |
1666 | stlibrd_t *brdp; |
1667 | unsigned int len, stlen, head, tail, size, count, cooksize; |
1668 | unsigned char *buf, *shbuf; |
1669 | unsigned long flags; |
1670 | |
1671 | #ifdef DEBUG |
1672 | printk("stli_flushchars(tty=%x)\n", (int) tty); |
1673 | #endif |
1674 | |
1675 | cooksize = stli_txcooksize; |
1676 | cooktty = stli_txcooktty; |
1677 | stli_txcooksize = 0; |
1678 | stli_txcookrealsize = 0; |
1679 | stli_txcooktty = (struct tty_struct *) NULL; |
1680 | |
1681 | if (tty == (struct tty_struct *) NULL) |
1682 | return; |
1683 | if (cooktty == (struct tty_struct *) NULL) |
1684 | return; |
1685 | if (tty != cooktty) |
1686 | tty = cooktty; |
1687 | if (cooksize == 0) |
1688 | return; |
1689 | |
1690 | portp = tty->driver_data; |
1691 | if (portp == (stliport_t *) NULL) |
1692 | return; |
1693 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
1694 | return; |
1695 | brdp = stli_brds[portp->brdnr]; |
1696 | if (brdp == (stlibrd_t *) NULL) |
1697 | return; |
1698 | |
1699 | save_flags(flags); |
1700 | cli(); |
1701 | EBRDENABLE(brdp); |
1702 | |
1703 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); |
1704 | head = (unsigned int) ap->txq.head; |
1705 | tail = (unsigned int) ap->txq.tail; |
1706 | if (tail != ((unsigned int) ap->txq.tail)) |
1707 | tail = (unsigned int) ap->txq.tail; |
1708 | size = portp->txsize; |
1709 | if (head >= tail) { |
1710 | len = size - (head - tail) - 1; |
1711 | stlen = size - head; |
1712 | } else { |
1713 | len = tail - head - 1; |
1714 | stlen = len; |
1715 | } |
1716 | |
1717 | len = MIN(len, cooksize); |
1718 | count = 0; |
1719 | shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1720 | buf = stli_txcookbuf; |
1721 | |
1722 | while (len > 0) { |
1723 | stlen = MIN(len, stlen); |
1724 | memcpy((shbuf + head), buf, stlen); |
1725 | buf += stlen; |
1726 | len -= stlen; |
1727 | count += stlen; |
1728 | head += stlen; |
1729 | if (head >= size) { |
1730 | head = 0; |
1731 | stlen = tail; |
1732 | } |
1733 | } |
1734 | |
1735 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); |
1736 | ap->txq.head = head; |
1737 | |
1738 | if (test_bit(ST_TXBUSY, &portp->state)) { |
1739 | if (ap->changed.data & DT_TXEMPTY) |
1740 | ap->changed.data &= ~DT_TXEMPTY; |
1741 | } |
1742 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1743 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + |
1744 | portp->portidx; |
1745 | *bits |= portp->portbit; |
1746 | set_bit(ST_TXBUSY, &portp->state); |
1747 | |
1748 | EBRDDISABLE(brdp); |
1749 | restore_flags(flags); |
1750 | } |
1751 | |
1752 | /*****************************************************************************/ |
1753 | |
1754 | static int stli_writeroom(struct tty_struct *tty) |
1755 | { |
1756 | volatile cdkasyrq_t *rp; |
1757 | stliport_t *portp; |
1758 | stlibrd_t *brdp; |
1759 | unsigned int head, tail, len; |
1760 | unsigned long flags; |
1761 | |
1762 | #ifdef DEBUG |
1763 | printk("stli_writeroom(tty=%x)\n", (int) tty); |
1764 | #endif |
1765 | |
1766 | if (tty == (struct tty_struct *) NULL) |
1767 | return(0); |
1768 | if (tty == stli_txcooktty) { |
1769 | if (stli_txcookrealsize != 0) { |
1770 | len = stli_txcookrealsize - stli_txcooksize; |
1771 | return(len); |
1772 | } |
1773 | } |
1774 | |
1775 | portp = tty->driver_data; |
1776 | if (portp == (stliport_t *) NULL) |
1777 | return(0); |
1778 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
1779 | return(0); |
1780 | brdp = stli_brds[portp->brdnr]; |
1781 | if (brdp == (stlibrd_t *) NULL) |
1782 | return(0); |
1783 | |
1784 | save_flags(flags); |
1785 | cli(); |
1786 | EBRDENABLE(brdp); |
1787 | rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1788 | head = (unsigned int) rp->head; |
1789 | tail = (unsigned int) rp->tail; |
1790 | if (tail != ((unsigned int) rp->tail)) |
1791 | tail = (unsigned int) rp->tail; |
1792 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); |
1793 | len--; |
1794 | EBRDDISABLE(brdp); |
1795 | restore_flags(flags); |
1796 | |
1797 | if (tty == stli_txcooktty) { |
1798 | stli_txcookrealsize = len; |
1799 | len -= stli_txcooksize; |
1800 | } |
1801 | return(len); |
1802 | } |
1803 | |
1804 | /*****************************************************************************/ |
1805 | |
1806 | /* |
1807 | * Return the number of characters in the transmit buffer. Normally we |
1808 | * will return the number of chars in the shared memory ring queue. |
1809 | * We need to kludge around the case where the shared memory buffer is |
1810 | * empty but not all characters have drained yet, for this case just |
1811 | * return that there is 1 character in the buffer! |
1812 | */ |
1813 | |
1814 | static int stli_charsinbuffer(struct tty_struct *tty) |
1815 | { |
1816 | volatile cdkasyrq_t *rp; |
1817 | stliport_t *portp; |
1818 | stlibrd_t *brdp; |
1819 | unsigned int head, tail, len; |
1820 | unsigned long flags; |
1821 | |
1822 | #ifdef DEBUG |
1823 | printk("stli_charsinbuffer(tty=%x)\n", (int) tty); |
1824 | #endif |
1825 | |
1826 | if (tty == (struct tty_struct *) NULL) |
1827 | return(0); |
1828 | if (tty == stli_txcooktty) |
1829 | stli_flushchars(tty); |
1830 | portp = tty->driver_data; |
1831 | if (portp == (stliport_t *) NULL) |
1832 | return(0); |
1833 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
1834 | return(0); |
1835 | brdp = stli_brds[portp->brdnr]; |
1836 | if (brdp == (stlibrd_t *) NULL) |
1837 | return(0); |
1838 | |
1839 | save_flags(flags); |
1840 | cli(); |
1841 | EBRDENABLE(brdp); |
1842 | rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1843 | head = (unsigned int) rp->head; |
1844 | tail = (unsigned int) rp->tail; |
1845 | if (tail != ((unsigned int) rp->tail)) |
1846 | tail = (unsigned int) rp->tail; |
1847 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); |
1848 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) |
1849 | len = 1; |
1850 | EBRDDISABLE(brdp); |
1851 | restore_flags(flags); |
1852 | |
1853 | return(len); |
1854 | } |
1855 | |
1856 | /*****************************************************************************/ |
1857 | |
1858 | /* |
1859 | * Generate the serial struct info. |
1860 | */ |
1861 | |
1862 | static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp) |
1863 | { |
1864 | struct serial_struct sio; |
1865 | stlibrd_t *brdp; |
1866 | |
1867 | #ifdef DEBUG |
1868 | printk("stli_getserial(portp=%x,sp=%x)\n", (int) portp, (int) sp); |
1869 | #endif |
1870 | |
1871 | memset(&sio, 0, sizeof(struct serial_struct)); |
1872 | sio.type = PORT_UNKNOWN; |
1873 | sio.line = portp->portnr; |
1874 | sio.irq = 0; |
1875 | sio.flags = portp->flags; |
1876 | sio.baud_base = portp->baud_base; |
1877 | sio.close_delay = portp->close_delay; |
1878 | sio.closing_wait = portp->closing_wait; |
1879 | sio.custom_divisor = portp->custom_divisor; |
1880 | sio.xmit_fifo_size = 0; |
1881 | sio.hub6 = 0; |
1882 | |
1883 | brdp = stli_brds[portp->brdnr]; |
1884 | if (brdp != (stlibrd_t *) NULL) |
1885 | sio.port = brdp->iobase; |
1886 | |
1887 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? |
1888 | -EFAULT : 0; |
1889 | } |
1890 | |
1891 | /*****************************************************************************/ |
1892 | |
1893 | /* |
1894 | * Set port according to the serial struct info. |
1895 | * At this point we do not do any auto-configure stuff, so we will |
1896 | * just quietly ignore any requests to change irq, etc. |
1897 | */ |
1898 | |
1899 | static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp) |
1900 | { |
1901 | struct serial_struct sio; |
1902 | int rc; |
1903 | |
1904 | #ifdef DEBUG |
1905 | printk("stli_setserial(portp=%p,sp=%p)\n", portp, sp); |
1906 | #endif |
1907 | |
1908 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) |
1909 | return -EFAULT; |
1910 | if (!capable(CAP_SYS_ADMIN)) { |
1911 | if ((sio.baud_base != portp->baud_base) || |
1912 | (sio.close_delay != portp->close_delay) || |
1913 | ((sio.flags & ~ASYNC_USR_MASK) != |
1914 | (portp->flags & ~ASYNC_USR_MASK))) |
1915 | return(-EPERM); |
1916 | } |
1917 | |
1918 | portp->flags = (portp->flags & ~ASYNC_USR_MASK) | |
1919 | (sio.flags & ASYNC_USR_MASK); |
1920 | portp->baud_base = sio.baud_base; |
1921 | portp->close_delay = sio.close_delay; |
1922 | portp->closing_wait = sio.closing_wait; |
1923 | portp->custom_divisor = sio.custom_divisor; |
1924 | |
1925 | if ((rc = stli_setport(portp)) < 0) |
1926 | return(rc); |
1927 | return(0); |
1928 | } |
1929 | |
1930 | /*****************************************************************************/ |
1931 | |
1932 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) |
1933 | { |
1934 | stliport_t *portp = tty->driver_data; |
1935 | stlibrd_t *brdp; |
1936 | int rc; |
1937 | |
1938 | if (portp == (stliport_t *) NULL) |
1939 | return(-ENODEV); |
1940 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
1941 | return(0); |
1942 | brdp = stli_brds[portp->brdnr]; |
1943 | if (brdp == (stlibrd_t *) NULL) |
1944 | return(0); |
1945 | if (tty->flags & (1 << TTY_IO_ERROR)) |
1946 | return(-EIO); |
1947 | |
1948 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, |
1949 | &portp->asig, sizeof(asysigs_t), 1)) < 0) |
1950 | return(rc); |
1951 | |
1952 | return stli_mktiocm(portp->asig.sigvalue); |
1953 | } |
1954 | |
1955 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, |
1956 | unsigned int set, unsigned int clear) |
1957 | { |
1958 | stliport_t *portp = tty->driver_data; |
1959 | stlibrd_t *brdp; |
1960 | int rts = -1, dtr = -1; |
1961 | |
1962 | if (portp == (stliport_t *) NULL) |
1963 | return(-ENODEV); |
1964 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
1965 | return(0); |
1966 | brdp = stli_brds[portp->brdnr]; |
1967 | if (brdp == (stlibrd_t *) NULL) |
1968 | return(0); |
1969 | if (tty->flags & (1 << TTY_IO_ERROR)) |
1970 | return(-EIO); |
1971 | |
1972 | if (set & TIOCM_RTS) |
1973 | rts = 1; |
1974 | if (set & TIOCM_DTR) |
1975 | dtr = 1; |
1976 | if (clear & TIOCM_RTS) |
1977 | rts = 0; |
1978 | if (clear & TIOCM_DTR) |
1979 | dtr = 0; |
1980 | |
1981 | stli_mkasysigs(&portp->asig, dtr, rts); |
1982 | |
1983 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, |
1984 | sizeof(asysigs_t), 0); |
1985 | } |
1986 | |
1987 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) |
1988 | { |
1989 | stliport_t *portp; |
1990 | stlibrd_t *brdp; |
1991 | unsigned int ival; |
1992 | int rc; |
1993 | void __user *argp = (void __user *)arg; |
1994 | |
1995 | #ifdef DEBUG |
1996 | printk("stli_ioctl(tty=%x,file=%x,cmd=%x,arg=%x)\n", |
1997 | (int) tty, (int) file, cmd, (int) arg); |
1998 | #endif |
1999 | |
2000 | if (tty == (struct tty_struct *) NULL) |
2001 | return(-ENODEV); |
2002 | portp = tty->driver_data; |
2003 | if (portp == (stliport_t *) NULL) |
2004 | return(-ENODEV); |
2005 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
2006 | return(0); |
2007 | brdp = stli_brds[portp->brdnr]; |
2008 | if (brdp == (stlibrd_t *) NULL) |
2009 | return(0); |
2010 | |
2011 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && |
2012 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { |
2013 | if (tty->flags & (1 << TTY_IO_ERROR)) |
2014 | return(-EIO); |
2015 | } |
2016 | |
2017 | rc = 0; |
2018 | |
2019 | switch (cmd) { |
2020 | case TIOCGSOFTCAR: |
2021 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), |
2022 | (unsigned __user *) arg); |
2023 | break; |
2024 | case TIOCSSOFTCAR: |
2025 | if ((rc = get_user(ival, (unsigned __user *) arg)) == 0) |
2026 | tty->termios->c_cflag = |
2027 | (tty->termios->c_cflag & ~CLOCAL) | |
2028 | (ival ? CLOCAL : 0); |
2029 | break; |
2030 | case TIOCGSERIAL: |
2031 | rc = stli_getserial(portp, argp); |
2032 | break; |
2033 | case TIOCSSERIAL: |
2034 | rc = stli_setserial(portp, argp); |
2035 | break; |
2036 | case STL_GETPFLAG: |
2037 | rc = put_user(portp->pflag, (unsigned __user *)argp); |
2038 | break; |
2039 | case STL_SETPFLAG: |
2040 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) |
2041 | stli_setport(portp); |
2042 | break; |
2043 | case COM_GETPORTSTATS: |
2044 | rc = stli_getportstats(portp, argp); |
2045 | break; |
2046 | case COM_CLRPORTSTATS: |
2047 | rc = stli_clrportstats(portp, argp); |
2048 | break; |
2049 | case TIOCSERCONFIG: |
2050 | case TIOCSERGWILD: |
2051 | case TIOCSERSWILD: |
2052 | case TIOCSERGETLSR: |
2053 | case TIOCSERGSTRUCT: |
2054 | case TIOCSERGETMULTI: |
2055 | case TIOCSERSETMULTI: |
2056 | default: |
2057 | rc = -ENOIOCTLCMD; |
2058 | break; |
2059 | } |
2060 | |
2061 | return(rc); |
2062 | } |
2063 | |
2064 | /*****************************************************************************/ |
2065 | |
2066 | /* |
2067 | * This routine assumes that we have user context and can sleep. |
2068 | * Looks like it is true for the current ttys implementation..!! |
2069 | */ |
2070 | |
2071 | static void stli_settermios(struct tty_struct *tty, struct termios *old) |
2072 | { |
2073 | stliport_t *portp; |
2074 | stlibrd_t *brdp; |
2075 | struct termios *tiosp; |
2076 | asyport_t aport; |
2077 | |
2078 | #ifdef DEBUG |
2079 | printk("stli_settermios(tty=%x,old=%x)\n", (int) tty, (int) old); |
2080 | #endif |
2081 | |
2082 | if (tty == (struct tty_struct *) NULL) |
2083 | return; |
2084 | portp = tty->driver_data; |
2085 | if (portp == (stliport_t *) NULL) |
2086 | return; |
2087 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
2088 | return; |
2089 | brdp = stli_brds[portp->brdnr]; |
2090 | if (brdp == (stlibrd_t *) NULL) |
2091 | return; |
2092 | |
2093 | tiosp = tty->termios; |
2094 | if ((tiosp->c_cflag == old->c_cflag) && |
2095 | (tiosp->c_iflag == old->c_iflag)) |
2096 | return; |
2097 | |
2098 | stli_mkasyport(portp, &aport, tiosp); |
2099 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); |
2100 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); |
2101 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, |
2102 | sizeof(asysigs_t), 0); |
2103 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) |
2104 | tty->hw_stopped = 0; |
2105 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) |
2106 | wake_up_interruptible(&portp->open_wait); |
2107 | } |
2108 | |
2109 | /*****************************************************************************/ |
2110 | |
2111 | /* |
2112 | * Attempt to flow control who ever is sending us data. We won't really |
2113 | * do any flow control action here. We can't directly, and even if we |
2114 | * wanted to we would have to send a command to the slave. The slave |
2115 | * knows how to flow control, and will do so when its buffers reach its |
2116 | * internal high water marks. So what we will do is set a local state |
2117 | * bit that will stop us sending any RX data up from the poll routine |
2118 | * (which is the place where RX data from the slave is handled). |
2119 | */ |
2120 | |
2121 | static void stli_throttle(struct tty_struct *tty) |
2122 | { |
2123 | stliport_t *portp; |
2124 | |
2125 | #ifdef DEBUG |
2126 | printk("stli_throttle(tty=%x)\n", (int) tty); |
2127 | #endif |
2128 | |
2129 | if (tty == (struct tty_struct *) NULL) |
2130 | return; |
2131 | portp = tty->driver_data; |
2132 | if (portp == (stliport_t *) NULL) |
2133 | return; |
2134 | |
2135 | set_bit(ST_RXSTOP, &portp->state); |
2136 | } |
2137 | |
2138 | /*****************************************************************************/ |
2139 | |
2140 | /* |
2141 | * Unflow control the device sending us data... That means that all |
2142 | * we have to do is clear the RXSTOP state bit. The next poll call |
2143 | * will then be able to pass the RX data back up. |
2144 | */ |
2145 | |
2146 | static void stli_unthrottle(struct tty_struct *tty) |
2147 | { |
2148 | stliport_t *portp; |
2149 | |
2150 | #ifdef DEBUG |
2151 | printk("stli_unthrottle(tty=%x)\n", (int) tty); |
2152 | #endif |
2153 | |
2154 | if (tty == (struct tty_struct *) NULL) |
2155 | return; |
2156 | portp = tty->driver_data; |
2157 | if (portp == (stliport_t *) NULL) |
2158 | return; |
2159 | |
2160 | clear_bit(ST_RXSTOP, &portp->state); |
2161 | } |
2162 | |
2163 | /*****************************************************************************/ |
2164 | |
2165 | /* |
2166 | * Stop the transmitter. Basically to do this we will just turn TX |
2167 | * interrupts off. |
2168 | */ |
2169 | |
2170 | static void stli_stop(struct tty_struct *tty) |
2171 | { |
2172 | stlibrd_t *brdp; |
2173 | stliport_t *portp; |
2174 | asyctrl_t actrl; |
2175 | |
2176 | #ifdef DEBUG |
2177 | printk("stli_stop(tty=%x)\n", (int) tty); |
2178 | #endif |
2179 | |
2180 | if (tty == (struct tty_struct *) NULL) |
2181 | return; |
2182 | portp = tty->driver_data; |
2183 | if (portp == (stliport_t *) NULL) |
2184 | return; |
2185 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
2186 | return; |
2187 | brdp = stli_brds[portp->brdnr]; |
2188 | if (brdp == (stlibrd_t *) NULL) |
2189 | return; |
2190 | |
2191 | memset(&actrl, 0, sizeof(asyctrl_t)); |
2192 | actrl.txctrl = CT_STOPFLOW; |
2193 | #if 0 |
2194 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
2195 | #endif |
2196 | } |
2197 | |
2198 | /*****************************************************************************/ |
2199 | |
2200 | /* |
2201 | * Start the transmitter again. Just turn TX interrupts back on. |
2202 | */ |
2203 | |
2204 | static void stli_start(struct tty_struct *tty) |
2205 | { |
2206 | stliport_t *portp; |
2207 | stlibrd_t *brdp; |
2208 | asyctrl_t actrl; |
2209 | |
2210 | #ifdef DEBUG |
2211 | printk("stli_start(tty=%x)\n", (int) tty); |
2212 | #endif |
2213 | |
2214 | if (tty == (struct tty_struct *) NULL) |
2215 | return; |
2216 | portp = tty->driver_data; |
2217 | if (portp == (stliport_t *) NULL) |
2218 | return; |
2219 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
2220 | return; |
2221 | brdp = stli_brds[portp->brdnr]; |
2222 | if (brdp == (stlibrd_t *) NULL) |
2223 | return; |
2224 | |
2225 | memset(&actrl, 0, sizeof(asyctrl_t)); |
2226 | actrl.txctrl = CT_STARTFLOW; |
2227 | #if 0 |
2228 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
2229 | #endif |
2230 | } |
2231 | |
2232 | /*****************************************************************************/ |
2233 | |
2234 | /* |
2235 | * Scheduler called hang up routine. This is called from the scheduler, |
2236 | * not direct from the driver "poll" routine. We can't call it there |
2237 | * since the real local hangup code will enable/disable the board and |
2238 | * other things that we can't do while handling the poll. Much easier |
2239 | * to deal with it some time later (don't really care when, hangups |
2240 | * aren't that time critical). |
2241 | */ |
2242 | |
2243 | static void stli_dohangup(void *arg) |
2244 | { |
2245 | stliport_t *portp; |
2246 | |
2247 | #ifdef DEBUG |
2248 | printk(KERN_DEBUG "stli_dohangup(portp=%x)\n", (int) arg); |
2249 | #endif |
2250 | |
2251 | /* |
2252 | * FIXME: There's a module removal race here: tty_hangup |
2253 | * calls schedule_work which will call into this |
2254 | * driver later. |
2255 | */ |
2256 | portp = (stliport_t *) arg; |
2257 | if (portp != (stliport_t *) NULL) { |
2258 | if (portp->tty != (struct tty_struct *) NULL) { |
2259 | tty_hangup(portp->tty); |
2260 | } |
2261 | } |
2262 | } |
2263 | |
2264 | /*****************************************************************************/ |
2265 | |
2266 | /* |
2267 | * Hangup this port. This is pretty much like closing the port, only |
2268 | * a little more brutal. No waiting for data to drain. Shutdown the |
2269 | * port and maybe drop signals. This is rather tricky really. We want |
2270 | * to close the port as well. |
2271 | */ |
2272 | |
2273 | static void stli_hangup(struct tty_struct *tty) |
2274 | { |
2275 | stliport_t *portp; |
2276 | stlibrd_t *brdp; |
2277 | unsigned long flags; |
2278 | |
2279 | #ifdef DEBUG |
2280 | printk(KERN_DEBUG "stli_hangup(tty=%x)\n", (int) tty); |
2281 | #endif |
2282 | |
2283 | if (tty == (struct tty_struct *) NULL) |
2284 | return; |
2285 | portp = tty->driver_data; |
2286 | if (portp == (stliport_t *) NULL) |
2287 | return; |
2288 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
2289 | return; |
2290 | brdp = stli_brds[portp->brdnr]; |
2291 | if (brdp == (stlibrd_t *) NULL) |
2292 | return; |
2293 | |
2294 | portp->flags &= ~ASYNC_INITIALIZED; |
2295 | |
2296 | save_flags(flags); |
2297 | cli(); |
2298 | if (! test_bit(ST_CLOSING, &portp->state)) |
2299 | stli_rawclose(brdp, portp, 0, 0); |
2300 | if (tty->termios->c_cflag & HUPCL) { |
2301 | stli_mkasysigs(&portp->asig, 0, 0); |
2302 | if (test_bit(ST_CMDING, &portp->state)) { |
2303 | set_bit(ST_DOSIGS, &portp->state); |
2304 | set_bit(ST_DOFLUSHTX, &portp->state); |
2305 | set_bit(ST_DOFLUSHRX, &portp->state); |
2306 | } else { |
2307 | stli_sendcmd(brdp, portp, A_SETSIGNALSF, |
2308 | &portp->asig, sizeof(asysigs_t), 0); |
2309 | } |
2310 | } |
2311 | restore_flags(flags); |
2312 | |
2313 | clear_bit(ST_TXBUSY, &portp->state); |
2314 | clear_bit(ST_RXSTOP, &portp->state); |
2315 | set_bit(TTY_IO_ERROR, &tty->flags); |
2316 | portp->tty = (struct tty_struct *) NULL; |
2317 | portp->flags &= ~ASYNC_NORMAL_ACTIVE; |
2318 | portp->refcount = 0; |
2319 | wake_up_interruptible(&portp->open_wait); |
2320 | } |
2321 | |
2322 | /*****************************************************************************/ |
2323 | |
2324 | /* |
2325 | * Flush characters from the lower buffer. We may not have user context |
2326 | * so we cannot sleep waiting for it to complete. Also we need to check |
2327 | * if there is chars for this port in the TX cook buffer, and flush them |
2328 | * as well. |
2329 | */ |
2330 | |
2331 | static void stli_flushbuffer(struct tty_struct *tty) |
2332 | { |
2333 | stliport_t *portp; |
2334 | stlibrd_t *brdp; |
2335 | unsigned long ftype, flags; |
2336 | |
2337 | #ifdef DEBUG |
2338 | printk(KERN_DEBUG "stli_flushbuffer(tty=%x)\n", (int) tty); |
2339 | #endif |
2340 | |
2341 | if (tty == (struct tty_struct *) NULL) |
2342 | return; |
2343 | portp = tty->driver_data; |
2344 | if (portp == (stliport_t *) NULL) |
2345 | return; |
2346 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
2347 | return; |
2348 | brdp = stli_brds[portp->brdnr]; |
2349 | if (brdp == (stlibrd_t *) NULL) |
2350 | return; |
2351 | |
2352 | save_flags(flags); |
2353 | cli(); |
2354 | if (tty == stli_txcooktty) { |
2355 | stli_txcooktty = (struct tty_struct *) NULL; |
2356 | stli_txcooksize = 0; |
2357 | stli_txcookrealsize = 0; |
2358 | } |
2359 | if (test_bit(ST_CMDING, &portp->state)) { |
2360 | set_bit(ST_DOFLUSHTX, &portp->state); |
2361 | } else { |
2362 | ftype = FLUSHTX; |
2363 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { |
2364 | ftype |= FLUSHRX; |
2365 | clear_bit(ST_DOFLUSHRX, &portp->state); |
2366 | } |
2367 | stli_sendcmd(brdp, portp, A_FLUSH, &ftype, |
2368 | sizeof(unsigned long), 0); |
2369 | } |
2370 | restore_flags(flags); |
2371 | |
2372 | wake_up_interruptible(&tty->write_wait); |
2373 | if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && |
2374 | tty->ldisc.write_wakeup) |
2375 | (tty->ldisc.write_wakeup)(tty); |
2376 | } |
2377 | |
2378 | /*****************************************************************************/ |
2379 | |
2380 | static void stli_breakctl(struct tty_struct *tty, int state) |
2381 | { |
2382 | stlibrd_t *brdp; |
2383 | stliport_t *portp; |
2384 | long arg; |
2385 | /* long savestate, savetime; */ |
2386 | |
2387 | #ifdef DEBUG |
2388 | printk(KERN_DEBUG "stli_breakctl(tty=%x,state=%d)\n", (int) tty, state); |
2389 | #endif |
2390 | |
2391 | if (tty == (struct tty_struct *) NULL) |
2392 | return; |
2393 | portp = tty->driver_data; |
2394 | if (portp == (stliport_t *) NULL) |
2395 | return; |
2396 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
2397 | return; |
2398 | brdp = stli_brds[portp->brdnr]; |
2399 | if (brdp == (stlibrd_t *) NULL) |
2400 | return; |
2401 | |
2402 | /* |
2403 | * Due to a bug in the tty send_break() code we need to preserve |
2404 | * the current process state and timeout... |
2405 | savetime = current->timeout; |
2406 | savestate = current->state; |
2407 | */ |
2408 | |
2409 | arg = (state == -1) ? BREAKON : BREAKOFF; |
2410 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); |
2411 | |
2412 | /* |
2413 | * |
2414 | current->timeout = savetime; |
2415 | current->state = savestate; |
2416 | */ |
2417 | } |
2418 | |
2419 | /*****************************************************************************/ |
2420 | |
2421 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) |
2422 | { |
2423 | stliport_t *portp; |
2424 | unsigned long tend; |
2425 | |
2426 | #ifdef DEBUG |
2427 | printk(KERN_DEBUG "stli_waituntilsent(tty=%x,timeout=%x)\n", (int) tty, timeout); |
2428 | #endif |
2429 | |
2430 | if (tty == (struct tty_struct *) NULL) |
2431 | return; |
2432 | portp = tty->driver_data; |
2433 | if (portp == (stliport_t *) NULL) |
2434 | return; |
2435 | |
2436 | if (timeout == 0) |
2437 | timeout = HZ; |
2438 | tend = jiffies + timeout; |
2439 | |
2440 | while (test_bit(ST_TXBUSY, &portp->state)) { |
2441 | if (signal_pending(current)) |
2442 | break; |
2443 | msleep_interruptible(20); |
2444 | if (time_after_eq(jiffies, tend)) |
2445 | break; |
2446 | } |
2447 | } |
2448 | |
2449 | /*****************************************************************************/ |
2450 | |
2451 | static void stli_sendxchar(struct tty_struct *tty, char ch) |
2452 | { |
2453 | stlibrd_t *brdp; |
2454 | stliport_t *portp; |
2455 | asyctrl_t actrl; |
2456 | |
2457 | #ifdef DEBUG |
2458 | printk(KERN_DEBUG "stli_sendxchar(tty=%x,ch=%x)\n", (int) tty, ch); |
2459 | #endif |
2460 | |
2461 | if (tty == (struct tty_struct *) NULL) |
2462 | return; |
2463 | portp = tty->driver_data; |
2464 | if (portp == (stliport_t *) NULL) |
2465 | return; |
2466 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
2467 | return; |
2468 | brdp = stli_brds[portp->brdnr]; |
2469 | if (brdp == (stlibrd_t *) NULL) |
2470 | return; |
2471 | |
2472 | memset(&actrl, 0, sizeof(asyctrl_t)); |
2473 | if (ch == STOP_CHAR(tty)) { |
2474 | actrl.rxctrl = CT_STOPFLOW; |
2475 | } else if (ch == START_CHAR(tty)) { |
2476 | actrl.rxctrl = CT_STARTFLOW; |
2477 | } else { |
2478 | actrl.txctrl = CT_SENDCHR; |
2479 | actrl.tximdch = ch; |
2480 | } |
2481 | |
2482 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
2483 | } |
2484 | |
2485 | /*****************************************************************************/ |
2486 | |
2487 | #define MAXLINE 80 |
2488 | |
2489 | /* |
2490 | * Format info for a specified port. The line is deliberately limited |
2491 | * to 80 characters. (If it is too long it will be truncated, if too |
2492 | * short then padded with spaces). |
2493 | */ |
2494 | |
2495 | static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos) |
2496 | { |
2497 | char *sp, *uart; |
2498 | int rc, cnt; |
2499 | |
2500 | rc = stli_portcmdstats(portp); |
2501 | |
2502 | uart = "UNKNOWN"; |
2503 | if (brdp->state & BST_STARTED) { |
2504 | switch (stli_comstats.hwid) { |
2505 | case 0: uart = "2681"; break; |
2506 | case 1: uart = "SC26198"; break; |
2507 | default: uart = "CD1400"; break; |
2508 | } |
2509 | } |
2510 | |
2511 | sp = pos; |
2512 | sp += sprintf(sp, "%d: uart:%s ", portnr, uart); |
2513 | |
2514 | if ((brdp->state & BST_STARTED) && (rc >= 0)) { |
2515 | sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal, |
2516 | (int) stli_comstats.rxtotal); |
2517 | |
2518 | if (stli_comstats.rxframing) |
2519 | sp += sprintf(sp, " fe:%d", |
2520 | (int) stli_comstats.rxframing); |
2521 | if (stli_comstats.rxparity) |
2522 | sp += sprintf(sp, " pe:%d", |
2523 | (int) stli_comstats.rxparity); |
2524 | if (stli_comstats.rxbreaks) |
2525 | sp += sprintf(sp, " brk:%d", |
2526 | (int) stli_comstats.rxbreaks); |
2527 | if (stli_comstats.rxoverrun) |
2528 | sp += sprintf(sp, " oe:%d", |
2529 | (int) stli_comstats.rxoverrun); |
2530 | |
2531 | cnt = sprintf(sp, "%s%s%s%s%s ", |
2532 | (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "", |
2533 | (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "", |
2534 | (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "", |
2535 | (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "", |
2536 | (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : ""); |
2537 | *sp = ' '; |
2538 | sp += cnt; |
2539 | } |
2540 | |
2541 | for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++) |
2542 | *sp++ = ' '; |
2543 | if (cnt >= MAXLINE) |
2544 | pos[(MAXLINE - 2)] = '+'; |
2545 | pos[(MAXLINE - 1)] = '\n'; |
2546 | |
2547 | return(MAXLINE); |
2548 | } |
2549 | |
2550 | /*****************************************************************************/ |
2551 | |
2552 | /* |
2553 | * Port info, read from the /proc file system. |
2554 | */ |
2555 | |
2556 | static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data) |
2557 | { |
2558 | stlibrd_t *brdp; |
2559 | stliport_t *portp; |
2560 | int brdnr, portnr, totalport; |
2561 | int curoff, maxoff; |
2562 | char *pos; |
2563 | |
2564 | #ifdef DEBUG |
2565 | printk(KERN_DEBUG "stli_readproc(page=%x,start=%x,off=%x,count=%d,eof=%x," |
2566 | "data=%x\n", (int) page, (int) start, (int) off, count, |
2567 | (int) eof, (int) data); |
2568 | #endif |
2569 | |
2570 | pos = page; |
2571 | totalport = 0; |
2572 | curoff = 0; |
2573 | |
2574 | if (off == 0) { |
2575 | pos += sprintf(pos, "%s: version %s", stli_drvtitle, |
2576 | stli_drvversion); |
2577 | while (pos < (page + MAXLINE - 1)) |
2578 | *pos++ = ' '; |
2579 | *pos++ = '\n'; |
2580 | } |
2581 | curoff = MAXLINE; |
2582 | |
2583 | /* |
2584 | * We scan through for each board, panel and port. The offset is |
2585 | * calculated on the fly, and irrelevant ports are skipped. |
2586 | */ |
2587 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { |
2588 | brdp = stli_brds[brdnr]; |
2589 | if (brdp == (stlibrd_t *) NULL) |
2590 | continue; |
2591 | if (brdp->state == 0) |
2592 | continue; |
2593 | |
2594 | maxoff = curoff + (brdp->nrports * MAXLINE); |
2595 | if (off >= maxoff) { |
2596 | curoff = maxoff; |
2597 | continue; |
2598 | } |
2599 | |
2600 | totalport = brdnr * STL_MAXPORTS; |
2601 | for (portnr = 0; (portnr < brdp->nrports); portnr++, |
2602 | totalport++) { |
2603 | portp = brdp->ports[portnr]; |
2604 | if (portp == (stliport_t *) NULL) |
2605 | continue; |
2606 | if (off >= (curoff += MAXLINE)) |
2607 | continue; |
2608 | if ((pos - page + MAXLINE) > count) |
2609 | goto stli_readdone; |
2610 | pos += stli_portinfo(brdp, portp, totalport, pos); |
2611 | } |
2612 | } |
2613 | |
2614 | *eof = 1; |
2615 | |
2616 | stli_readdone: |
2617 | *start = page; |
2618 | return(pos - page); |
2619 | } |
2620 | |
2621 | /*****************************************************************************/ |
2622 | |
2623 | /* |
2624 | * Generic send command routine. This will send a message to the slave, |
2625 | * of the specified type with the specified argument. Must be very |
2626 | * careful of data that will be copied out from shared memory - |
2627 | * containing command results. The command completion is all done from |
2628 | * a poll routine that does not have user context. Therefore you cannot |
2629 | * copy back directly into user space, or to the kernel stack of a |
2630 | * process. This routine does not sleep, so can be called from anywhere. |
2631 | */ |
2632 | |
2633 | static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) |
2634 | { |
2635 | volatile cdkhdr_t *hdrp; |
2636 | volatile cdkctrl_t *cp; |
2637 | volatile unsigned char *bits; |
2638 | unsigned long flags; |
2639 | |
2640 | #ifdef DEBUG |
2641 | printk(KERN_DEBUG "stli_sendcmd(brdp=%x,portp=%x,cmd=%x,arg=%x,size=%d," |
2642 | "copyback=%d)\n", (int) brdp, (int) portp, (int) cmd, |
2643 | (int) arg, size, copyback); |
2644 | #endif |
2645 | |
2646 | save_flags(flags); |
2647 | cli(); |
2648 | |
2649 | if (test_bit(ST_CMDING, &portp->state)) { |
2650 | printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n", |
2651 | (int) cmd); |
2652 | restore_flags(flags); |
2653 | return; |
2654 | } |
2655 | |
2656 | EBRDENABLE(brdp); |
2657 | cp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
2658 | if (size > 0) { |
2659 | memcpy((void *) &(cp->args[0]), arg, size); |
2660 | if (copyback) { |
2661 | portp->argp = arg; |
2662 | portp->argsize = size; |
2663 | } |
2664 | } |
2665 | cp->status = 0; |
2666 | cp->cmd = cmd; |
2667 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2668 | bits = ((volatile unsigned char *) hdrp) + brdp->slaveoffset + |
2669 | portp->portidx; |
2670 | *bits |= portp->portbit; |
2671 | set_bit(ST_CMDING, &portp->state); |
2672 | EBRDDISABLE(brdp); |
2673 | restore_flags(flags); |
2674 | } |
2675 | |
2676 | /*****************************************************************************/ |
2677 | |
2678 | /* |
2679 | * Read data from shared memory. This assumes that the shared memory |
2680 | * is enabled and that interrupts are off. Basically we just empty out |
2681 | * the shared memory buffer into the tty buffer. Must be careful to |
2682 | * handle the case where we fill up the tty buffer, but still have |
2683 | * more chars to unload. |
2684 | */ |
2685 | |
2686 | static void stli_read(stlibrd_t *brdp, stliport_t *portp) |
2687 | { |
2688 | volatile cdkasyrq_t *rp; |
2689 | volatile char *shbuf; |
2690 | struct tty_struct *tty; |
2691 | unsigned int head, tail, size; |
2692 | unsigned int len, stlen; |
2693 | |
2694 | #ifdef DEBUG |
2695 | printk(KERN_DEBUG "stli_read(brdp=%x,portp=%d)\n", |
2696 | (int) brdp, (int) portp); |
2697 | #endif |
2698 | |
2699 | if (test_bit(ST_RXSTOP, &portp->state)) |
2700 | return; |
2701 | tty = portp->tty; |
2702 | if (tty == (struct tty_struct *) NULL) |
2703 | return; |
2704 | |
2705 | rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2706 | head = (unsigned int) rp->head; |
2707 | if (head != ((unsigned int) rp->head)) |
2708 | head = (unsigned int) rp->head; |
2709 | tail = (unsigned int) rp->tail; |
2710 | size = portp->rxsize; |
2711 | if (head >= tail) { |
2712 | len = head - tail; |
2713 | stlen = len; |
2714 | } else { |
2715 | len = size - (tail - head); |
2716 | stlen = size - tail; |
2717 | } |
2718 | |
2719 | len = MIN(len, (TTY_FLIPBUF_SIZE - tty->flip.count)); |
2720 | shbuf = (volatile char *) EBRDGETMEMPTR(brdp, portp->rxoffset); |
2721 | |
2722 | while (len > 0) { |
2723 | stlen = MIN(len, stlen); |
2724 | memcpy(tty->flip.char_buf_ptr, (char *) (shbuf + tail), stlen); |
2725 | memset(tty->flip.flag_buf_ptr, 0, stlen); |
2726 | tty->flip.char_buf_ptr += stlen; |
2727 | tty->flip.flag_buf_ptr += stlen; |
2728 | tty->flip.count += stlen; |
2729 | |
2730 | len -= stlen; |
2731 | tail += stlen; |
2732 | if (tail >= size) { |
2733 | tail = 0; |
2734 | stlen = head; |
2735 | } |
2736 | } |
2737 | rp = &((volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2738 | rp->tail = tail; |
2739 | |
2740 | if (head != tail) |
2741 | set_bit(ST_RXING, &portp->state); |
2742 | |
2743 | tty_schedule_flip(tty); |
2744 | } |
2745 | |
2746 | /*****************************************************************************/ |
2747 | |
2748 | /* |
2749 | * Set up and carry out any delayed commands. There is only a small set |
2750 | * of slave commands that can be done "off-level". So it is not too |
2751 | * difficult to deal with them here. |
2752 | */ |
2753 | |
2754 | static void stli_dodelaycmd(stliport_t *portp, volatile cdkctrl_t *cp) |
2755 | { |
2756 | int cmd; |
2757 | |
2758 | if (test_bit(ST_DOSIGS, &portp->state)) { |
2759 | if (test_bit(ST_DOFLUSHTX, &portp->state) && |
2760 | test_bit(ST_DOFLUSHRX, &portp->state)) |
2761 | cmd = A_SETSIGNALSF; |
2762 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) |
2763 | cmd = A_SETSIGNALSFTX; |
2764 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) |
2765 | cmd = A_SETSIGNALSFRX; |
2766 | else |
2767 | cmd = A_SETSIGNALS; |
2768 | clear_bit(ST_DOFLUSHTX, &portp->state); |
2769 | clear_bit(ST_DOFLUSHRX, &portp->state); |
2770 | clear_bit(ST_DOSIGS, &portp->state); |
2771 | memcpy((void *) &(cp->args[0]), (void *) &portp->asig, |
2772 | sizeof(asysigs_t)); |
2773 | cp->status = 0; |
2774 | cp->cmd = cmd; |
2775 | set_bit(ST_CMDING, &portp->state); |
2776 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || |
2777 | test_bit(ST_DOFLUSHRX, &portp->state)) { |
2778 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); |
2779 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); |
2780 | clear_bit(ST_DOFLUSHTX, &portp->state); |
2781 | clear_bit(ST_DOFLUSHRX, &portp->state); |
2782 | memcpy((void *) &(cp->args[0]), (void *) &cmd, sizeof(int)); |
2783 | cp->status = 0; |
2784 | cp->cmd = A_FLUSH; |
2785 | set_bit(ST_CMDING, &portp->state); |
2786 | } |
2787 | } |
2788 | |
2789 | /*****************************************************************************/ |
2790 | |
2791 | /* |
2792 | * Host command service checking. This handles commands or messages |
2793 | * coming from the slave to the host. Must have board shared memory |
2794 | * enabled and interrupts off when called. Notice that by servicing the |
2795 | * read data last we don't need to change the shared memory pointer |
2796 | * during processing (which is a slow IO operation). |
2797 | * Return value indicates if this port is still awaiting actions from |
2798 | * the slave (like open, command, or even TX data being sent). If 0 |
2799 | * then port is still busy, otherwise no longer busy. |
2800 | */ |
2801 | |
2802 | static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp) |
2803 | { |
2804 | volatile cdkasy_t *ap; |
2805 | volatile cdkctrl_t *cp; |
2806 | struct tty_struct *tty; |
2807 | asynotify_t nt; |
2808 | unsigned long oldsigs; |
2809 | int rc, donerx; |
2810 | |
2811 | #ifdef DEBUG |
2812 | printk(KERN_DEBUG "stli_hostcmd(brdp=%x,channr=%d)\n", |
2813 | (int) brdp, channr); |
2814 | #endif |
2815 | |
2816 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); |
2817 | cp = &ap->ctrl; |
2818 | |
2819 | /* |
2820 | * Check if we are waiting for an open completion message. |
2821 | */ |
2822 | if (test_bit(ST_OPENING, &portp->state)) { |
2823 | rc = (int) cp->openarg; |
2824 | if ((cp->open == 0) && (rc != 0)) { |
2825 | if (rc > 0) |
2826 | rc--; |
2827 | cp->openarg = 0; |
2828 | portp->rc = rc; |
2829 | clear_bit(ST_OPENING, &portp->state); |
2830 | wake_up_interruptible(&portp->raw_wait); |
2831 | } |
2832 | } |
2833 | |
2834 | /* |
2835 | * Check if we are waiting for a close completion message. |
2836 | */ |
2837 | if (test_bit(ST_CLOSING, &portp->state)) { |
2838 | rc = (int) cp->closearg; |
2839 | if ((cp->close == 0) && (rc != 0)) { |
2840 | if (rc > 0) |
2841 | rc--; |
2842 | cp->closearg = 0; |
2843 | portp->rc = rc; |
2844 | clear_bit(ST_CLOSING, &portp->state); |
2845 | wake_up_interruptible(&portp->raw_wait); |
2846 | } |
2847 | } |
2848 | |
2849 | /* |
2850 | * Check if we are waiting for a command completion message. We may |
2851 | * need to copy out the command results associated with this command. |
2852 | */ |
2853 | if (test_bit(ST_CMDING, &portp->state)) { |
2854 | rc = cp->status; |
2855 | if ((cp->cmd == 0) && (rc != 0)) { |
2856 | if (rc > 0) |
2857 | rc--; |
2858 | if (portp->argp != (void *) NULL) { |
2859 | memcpy(portp->argp, (void *) &(cp->args[0]), |
2860 | portp->argsize); |
2861 | portp->argp = (void *) NULL; |
2862 | } |
2863 | cp->status = 0; |
2864 | portp->rc = rc; |
2865 | clear_bit(ST_CMDING, &portp->state); |
2866 | stli_dodelaycmd(portp, cp); |
2867 | wake_up_interruptible(&portp->raw_wait); |
2868 | } |
2869 | } |
2870 | |
2871 | /* |
2872 | * Check for any notification messages ready. This includes lots of |
2873 | * different types of events - RX chars ready, RX break received, |
2874 | * TX data low or empty in the slave, modem signals changed state. |
2875 | */ |
2876 | donerx = 0; |
2877 | |
2878 | if (ap->notify) { |
2879 | nt = ap->changed; |
2880 | ap->notify = 0; |
2881 | tty = portp->tty; |
2882 | |
2883 | if (nt.signal & SG_DCD) { |
2884 | oldsigs = portp->sigs; |
2885 | portp->sigs = stli_mktiocm(nt.sigvalue); |
2886 | clear_bit(ST_GETSIGS, &portp->state); |
2887 | if ((portp->sigs & TIOCM_CD) && |
2888 | ((oldsigs & TIOCM_CD) == 0)) |
2889 | wake_up_interruptible(&portp->open_wait); |
2890 | if ((oldsigs & TIOCM_CD) && |
2891 | ((portp->sigs & TIOCM_CD) == 0)) { |
2892 | if (portp->flags & ASYNC_CHECK_CD) { |
2893 | if (tty) |
2894 | schedule_work(&portp->tqhangup); |
2895 | } |
2896 | } |
2897 | } |
2898 | |
2899 | if (nt.data & DT_TXEMPTY) |
2900 | clear_bit(ST_TXBUSY, &portp->state); |
2901 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { |
2902 | if (tty != (struct tty_struct *) NULL) { |
2903 | if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && |
2904 | tty->ldisc.write_wakeup) { |
2905 | (tty->ldisc.write_wakeup)(tty); |
2906 | EBRDENABLE(brdp); |
2907 | } |
2908 | wake_up_interruptible(&tty->write_wait); |
2909 | } |
2910 | } |
2911 | |
2912 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { |
2913 | if (tty != (struct tty_struct *) NULL) { |
2914 | if (tty->flip.count < TTY_FLIPBUF_SIZE) { |
2915 | tty->flip.count++; |
2916 | *tty->flip.flag_buf_ptr++ = TTY_BREAK; |
2917 | *tty->flip.char_buf_ptr++ = 0; |
2918 | if (portp->flags & ASYNC_SAK) { |
2919 | do_SAK(tty); |
2920 | EBRDENABLE(brdp); |
2921 | } |
2922 | tty_schedule_flip(tty); |
2923 | } |
2924 | } |
2925 | } |
2926 | |
2927 | if (nt.data & DT_RXBUSY) { |
2928 | donerx++; |
2929 | stli_read(brdp, portp); |
2930 | } |
2931 | } |
2932 | |
2933 | /* |
2934 | * It might seem odd that we are checking for more RX chars here. |
2935 | * But, we need to handle the case where the tty buffer was previously |
2936 | * filled, but we had more characters to pass up. The slave will not |
2937 | * send any more RX notify messages until the RX buffer has been emptied. |
2938 | * But it will leave the service bits on (since the buffer is not empty). |
2939 | * So from here we can try to process more RX chars. |
2940 | */ |
2941 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { |
2942 | clear_bit(ST_RXING, &portp->state); |
2943 | stli_read(brdp, portp); |
2944 | } |
2945 | |
2946 | return((test_bit(ST_OPENING, &portp->state) || |
2947 | test_bit(ST_CLOSING, &portp->state) || |
2948 | test_bit(ST_CMDING, &portp->state) || |
2949 | test_bit(ST_TXBUSY, &portp->state) || |
2950 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); |
2951 | } |
2952 | |
2953 | /*****************************************************************************/ |
2954 | |
2955 | /* |
2956 | * Service all ports on a particular board. Assumes that the boards |
2957 | * shared memory is enabled, and that the page pointer is pointed |
2958 | * at the cdk header structure. |
2959 | */ |
2960 | |
2961 | static void stli_brdpoll(stlibrd_t *brdp, volatile cdkhdr_t *hdrp) |
2962 | { |
2963 | stliport_t *portp; |
2964 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; |
2965 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; |
2966 | unsigned char *slavep; |
2967 | int bitpos, bitat, bitsize; |
2968 | int channr, nrdevs, slavebitchange; |
2969 | |
2970 | bitsize = brdp->bitsize; |
2971 | nrdevs = brdp->nrdevs; |
2972 | |
2973 | /* |
2974 | * Check if slave wants any service. Basically we try to do as |
2975 | * little work as possible here. There are 2 levels of service |
2976 | * bits. So if there is nothing to do we bail early. We check |
2977 | * 8 service bits at a time in the inner loop, so we can bypass |
2978 | * the lot if none of them want service. |
2979 | */ |
2980 | memcpy(&hostbits[0], (((unsigned char *) hdrp) + brdp->hostoffset), |
2981 | bitsize); |
2982 | |
2983 | memset(&slavebits[0], 0, bitsize); |
2984 | slavebitchange = 0; |
2985 | |
2986 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
2987 | if (hostbits[bitpos] == 0) |
2988 | continue; |
2989 | channr = bitpos * 8; |
2990 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { |
2991 | if (hostbits[bitpos] & bitat) { |
2992 | portp = brdp->ports[(channr - 1)]; |
2993 | if (stli_hostcmd(brdp, portp)) { |
2994 | slavebitchange++; |
2995 | slavebits[bitpos] |= bitat; |
2996 | } |
2997 | } |
2998 | } |
2999 | } |
3000 | |
3001 | /* |
3002 | * If any of the ports are no longer busy then update them in the |
3003 | * slave request bits. We need to do this after, since a host port |
3004 | * service may initiate more slave requests. |
3005 | */ |
3006 | if (slavebitchange) { |
3007 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
3008 | slavep = ((unsigned char *) hdrp) + brdp->slaveoffset; |
3009 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
3010 | if (slavebits[bitpos]) |
3011 | slavep[bitpos] &= ~slavebits[bitpos]; |
3012 | } |
3013 | } |
3014 | } |
3015 | |
3016 | /*****************************************************************************/ |
3017 | |
3018 | /* |
3019 | * Driver poll routine. This routine polls the boards in use and passes |
3020 | * messages back up to host when necessary. This is actually very |
3021 | * CPU efficient, since we will always have the kernel poll clock, it |
3022 | * adds only a few cycles when idle (since board service can be |
3023 | * determined very easily), but when loaded generates no interrupts |
3024 | * (with their expensive associated context change). |
3025 | */ |
3026 | |
3027 | static void stli_poll(unsigned long arg) |
3028 | { |
3029 | volatile cdkhdr_t *hdrp; |
3030 | stlibrd_t *brdp; |
3031 | int brdnr; |
3032 | |
3033 | stli_timerlist.expires = STLI_TIMEOUT; |
3034 | add_timer(&stli_timerlist); |
3035 | |
3036 | /* |
3037 | * Check each board and do any servicing required. |
3038 | */ |
3039 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { |
3040 | brdp = stli_brds[brdnr]; |
3041 | if (brdp == (stlibrd_t *) NULL) |
3042 | continue; |
3043 | if ((brdp->state & BST_STARTED) == 0) |
3044 | continue; |
3045 | |
3046 | EBRDENABLE(brdp); |
3047 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
3048 | if (hdrp->hostreq) |
3049 | stli_brdpoll(brdp, hdrp); |
3050 | EBRDDISABLE(brdp); |
3051 | } |
3052 | } |
3053 | |
3054 | /*****************************************************************************/ |
3055 | |
3056 | /* |
3057 | * Translate the termios settings into the port setting structure of |
3058 | * the slave. |
3059 | */ |
3060 | |
3061 | static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp) |
3062 | { |
3063 | #ifdef DEBUG |
3064 | printk(KERN_DEBUG "stli_mkasyport(portp=%x,pp=%x,tiosp=%d)\n", |
3065 | (int) portp, (int) pp, (int) tiosp); |
3066 | #endif |
3067 | |
3068 | memset(pp, 0, sizeof(asyport_t)); |
3069 | |
3070 | /* |
3071 | * Start of by setting the baud, char size, parity and stop bit info. |
3072 | */ |
3073 | pp->baudout = tiosp->c_cflag & CBAUD; |
3074 | if (pp->baudout & CBAUDEX) { |
3075 | pp->baudout &= ~CBAUDEX; |
3076 | if ((pp->baudout < 1) || (pp->baudout > 4)) |
3077 | tiosp->c_cflag &= ~CBAUDEX; |
3078 | else |
3079 | pp->baudout += 15; |
3080 | } |
3081 | pp->baudout = stli_baudrates[pp->baudout]; |
3082 | if ((tiosp->c_cflag & CBAUD) == B38400) { |
3083 | if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
3084 | pp->baudout = 57600; |
3085 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
3086 | pp->baudout = 115200; |
3087 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
3088 | pp->baudout = 230400; |
3089 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
3090 | pp->baudout = 460800; |
3091 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) |
3092 | pp->baudout = (portp->baud_base / portp->custom_divisor); |
3093 | } |
3094 | if (pp->baudout > STL_MAXBAUD) |
3095 | pp->baudout = STL_MAXBAUD; |
3096 | pp->baudin = pp->baudout; |
3097 | |
3098 | switch (tiosp->c_cflag & CSIZE) { |
3099 | case CS5: |
3100 | pp->csize = 5; |
3101 | break; |
3102 | case CS6: |
3103 | pp->csize = 6; |
3104 | break; |
3105 | case CS7: |
3106 | pp->csize = 7; |
3107 | break; |
3108 | default: |
3109 | pp->csize = 8; |
3110 | break; |
3111 | } |
3112 | |
3113 | if (tiosp->c_cflag & CSTOPB) |
3114 | pp->stopbs = PT_STOP2; |
3115 | else |
3116 | pp->stopbs = PT_STOP1; |
3117 | |
3118 | if (tiosp->c_cflag & PARENB) { |
3119 | if (tiosp->c_cflag & PARODD) |
3120 | pp->parity = PT_ODDPARITY; |
3121 | else |
3122 | pp->parity = PT_EVENPARITY; |
3123 | } else { |
3124 | pp->parity = PT_NOPARITY; |
3125 | } |
3126 | |
3127 | /* |
3128 | * Set up any flow control options enabled. |
3129 | */ |
3130 | if (tiosp->c_iflag & IXON) { |
3131 | pp->flow |= F_IXON; |
3132 | if (tiosp->c_iflag & IXANY) |
3133 | pp->flow |= F_IXANY; |
3134 | } |
3135 | if (tiosp->c_cflag & CRTSCTS) |
3136 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); |
3137 | |
3138 | pp->startin = tiosp->c_cc[VSTART]; |
3139 | pp->stopin = tiosp->c_cc[VSTOP]; |
3140 | pp->startout = tiosp->c_cc[VSTART]; |
3141 | pp->stopout = tiosp->c_cc[VSTOP]; |
3142 | |
3143 | /* |
3144 | * Set up the RX char marking mask with those RX error types we must |
3145 | * catch. We can get the slave to help us out a little here, it will |
3146 | * ignore parity errors and breaks for us, and mark parity errors in |
3147 | * the data stream. |
3148 | */ |
3149 | if (tiosp->c_iflag & IGNPAR) |
3150 | pp->iflag |= FI_IGNRXERRS; |
3151 | if (tiosp->c_iflag & IGNBRK) |
3152 | pp->iflag |= FI_IGNBREAK; |
3153 | |
3154 | portp->rxmarkmsk = 0; |
3155 | if (tiosp->c_iflag & (INPCK | PARMRK)) |
3156 | pp->iflag |= FI_1MARKRXERRS; |
3157 | if (tiosp->c_iflag & BRKINT) |
3158 | portp->rxmarkmsk |= BRKINT; |
3159 | |
3160 | /* |
3161 | * Set up clocal processing as required. |
3162 | */ |
3163 | if (tiosp->c_cflag & CLOCAL) |
3164 | portp->flags &= ~ASYNC_CHECK_CD; |
3165 | else |
3166 | portp->flags |= ASYNC_CHECK_CD; |
3167 | |
3168 | /* |
3169 | * Transfer any persistent flags into the asyport structure. |
3170 | */ |
3171 | pp->pflag = (portp->pflag & 0xffff); |
3172 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; |
3173 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; |
3174 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; |
3175 | } |
3176 | |
3177 | /*****************************************************************************/ |
3178 | |
3179 | /* |
3180 | * Construct a slave signals structure for setting the DTR and RTS |
3181 | * signals as specified. |
3182 | */ |
3183 | |
3184 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) |
3185 | { |
3186 | #ifdef DEBUG |
3187 | printk(KERN_DEBUG "stli_mkasysigs(sp=%x,dtr=%d,rts=%d)\n", |
3188 | (int) sp, dtr, rts); |
3189 | #endif |
3190 | |
3191 | memset(sp, 0, sizeof(asysigs_t)); |
3192 | if (dtr >= 0) { |
3193 | sp->signal |= SG_DTR; |
3194 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); |
3195 | } |
3196 | if (rts >= 0) { |
3197 | sp->signal |= SG_RTS; |
3198 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); |
3199 | } |
3200 | } |
3201 | |
3202 | /*****************************************************************************/ |
3203 | |
3204 | /* |
3205 | * Convert the signals returned from the slave into a local TIOCM type |
3206 | * signals value. We keep them locally in TIOCM format. |
3207 | */ |
3208 | |
3209 | static long stli_mktiocm(unsigned long sigvalue) |
3210 | { |
3211 | long tiocm; |
3212 | |
3213 | #ifdef DEBUG |
3214 | printk(KERN_DEBUG "stli_mktiocm(sigvalue=%x)\n", (int) sigvalue); |
3215 | #endif |
3216 | |
3217 | tiocm = 0; |
3218 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); |
3219 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); |
3220 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); |
3221 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); |
3222 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); |
3223 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); |
3224 | return(tiocm); |
3225 | } |
3226 | |
3227 | /*****************************************************************************/ |
3228 | |
3229 | /* |
3230 | * All panels and ports actually attached have been worked out. All |
3231 | * we need to do here is set up the appropriate per port data structures. |
3232 | */ |
3233 | |
3234 | static int stli_initports(stlibrd_t *brdp) |
3235 | { |
3236 | stliport_t *portp; |
3237 | int i, panelnr, panelport; |
3238 | |
3239 | #ifdef DEBUG |
3240 | printk(KERN_DEBUG "stli_initports(brdp=%x)\n", (int) brdp); |
3241 | #endif |
3242 | |
3243 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { |
3244 | portp = (stliport_t *) stli_memalloc(sizeof(stliport_t)); |
3245 | if (portp == (stliport_t *) NULL) { |
3246 | printk("STALLION: failed to allocate port structure\n"); |
3247 | continue; |
3248 | } |
3249 | |
3250 | memset(portp, 0, sizeof(stliport_t)); |
3251 | portp->magic = STLI_PORTMAGIC; |
3252 | portp->portnr = i; |
3253 | portp->brdnr = brdp->brdnr; |
3254 | portp->panelnr = panelnr; |
3255 | portp->baud_base = STL_BAUDBASE; |
3256 | portp->close_delay = STL_CLOSEDELAY; |
3257 | portp->closing_wait = 30 * HZ; |
3258 | INIT_WORK(&portp->tqhangup, stli_dohangup, portp); |
3259 | init_waitqueue_head(&portp->open_wait); |
3260 | init_waitqueue_head(&portp->close_wait); |
3261 | init_waitqueue_head(&portp->raw_wait); |
3262 | panelport++; |
3263 | if (panelport >= brdp->panels[panelnr]) { |
3264 | panelport = 0; |
3265 | panelnr++; |
3266 | } |
3267 | brdp->ports[i] = portp; |
3268 | } |
3269 | |
3270 | return(0); |
3271 | } |
3272 | |
3273 | /*****************************************************************************/ |
3274 | |
3275 | /* |
3276 | * All the following routines are board specific hardware operations. |
3277 | */ |
3278 | |
3279 | static void stli_ecpinit(stlibrd_t *brdp) |
3280 | { |
3281 | unsigned long memconf; |
3282 | |
3283 | #ifdef DEBUG |
3284 | printk(KERN_DEBUG "stli_ecpinit(brdp=%d)\n", (int) brdp); |
3285 | #endif |
3286 | |
3287 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
3288 | udelay(10); |
3289 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
3290 | udelay(100); |
3291 | |
3292 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; |
3293 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); |
3294 | } |
3295 | |
3296 | /*****************************************************************************/ |
3297 | |
3298 | static void stli_ecpenable(stlibrd_t *brdp) |
3299 | { |
3300 | #ifdef DEBUG |
3301 | printk(KERN_DEBUG "stli_ecpenable(brdp=%x)\n", (int) brdp); |
3302 | #endif |
3303 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); |
3304 | } |
3305 | |
3306 | /*****************************************************************************/ |
3307 | |
3308 | static void stli_ecpdisable(stlibrd_t *brdp) |
3309 | { |
3310 | #ifdef DEBUG |
3311 | printk(KERN_DEBUG "stli_ecpdisable(brdp=%x)\n", (int) brdp); |
3312 | #endif |
3313 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
3314 | } |
3315 | |
3316 | /*****************************************************************************/ |
3317 | |
3318 | static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) |
3319 | { |
3320 | void *ptr; |
3321 | unsigned char val; |
3322 | |
3323 | #ifdef DEBUG |
3324 | printk(KERN_DEBUG "stli_ecpgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, |
3325 | (int) offset); |
3326 | #endif |
3327 | |
3328 | if (offset > brdp->memsize) { |
3329 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " |
3330 | "range at line=%d(%d), brd=%d\n", |
3331 | (int) offset, line, __LINE__, brdp->brdnr); |
3332 | ptr = NULL; |
3333 | val = 0; |
3334 | } else { |
3335 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); |
3336 | val = (unsigned char) (offset / ECP_ATPAGESIZE); |
3337 | } |
3338 | outb(val, (brdp->iobase + ECP_ATMEMPR)); |
3339 | return(ptr); |
3340 | } |
3341 | |
3342 | /*****************************************************************************/ |
3343 | |
3344 | static void stli_ecpreset(stlibrd_t *brdp) |
3345 | { |
3346 | #ifdef DEBUG |
3347 | printk(KERN_DEBUG "stli_ecpreset(brdp=%x)\n", (int) brdp); |
3348 | #endif |
3349 | |
3350 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
3351 | udelay(10); |
3352 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
3353 | udelay(500); |
3354 | } |
3355 | |
3356 | /*****************************************************************************/ |
3357 | |
3358 | static void stli_ecpintr(stlibrd_t *brdp) |
3359 | { |
3360 | #ifdef DEBUG |
3361 | printk(KERN_DEBUG "stli_ecpintr(brdp=%x)\n", (int) brdp); |
3362 | #endif |
3363 | outb(0x1, brdp->iobase); |
3364 | } |
3365 | |
3366 | /*****************************************************************************/ |
3367 | |
3368 | /* |
3369 | * The following set of functions act on ECP EISA boards. |
3370 | */ |
3371 | |
3372 | static void stli_ecpeiinit(stlibrd_t *brdp) |
3373 | { |
3374 | unsigned long memconf; |
3375 | |
3376 | #ifdef DEBUG |
3377 | printk(KERN_DEBUG "stli_ecpeiinit(brdp=%x)\n", (int) brdp); |
3378 | #endif |
3379 | |
3380 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
3381 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); |
3382 | udelay(10); |
3383 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); |
3384 | udelay(500); |
3385 | |
3386 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; |
3387 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); |
3388 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; |
3389 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); |
3390 | } |
3391 | |
3392 | /*****************************************************************************/ |
3393 | |
3394 | static void stli_ecpeienable(stlibrd_t *brdp) |
3395 | { |
3396 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); |
3397 | } |
3398 | |
3399 | /*****************************************************************************/ |
3400 | |
3401 | static void stli_ecpeidisable(stlibrd_t *brdp) |
3402 | { |
3403 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); |
3404 | } |
3405 | |
3406 | /*****************************************************************************/ |
3407 | |
3408 | static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line) |
3409 | { |
3410 | void *ptr; |
3411 | unsigned char val; |
3412 | |
3413 | #ifdef DEBUG |
3414 | printk(KERN_DEBUG "stli_ecpeigetmemptr(brdp=%x,offset=%x,line=%d)\n", |
3415 | (int) brdp, (int) offset, line); |
3416 | #endif |
3417 | |
3418 | if (offset > brdp->memsize) { |
3419 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " |
3420 | "range at line=%d(%d), brd=%d\n", |
3421 | (int) offset, line, __LINE__, brdp->brdnr); |
3422 | ptr = NULL; |
3423 | val = 0; |
3424 | } else { |
3425 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); |
3426 | if (offset < ECP_EIPAGESIZE) |
3427 | val = ECP_EIENABLE; |
3428 | else |
3429 | val = ECP_EIENABLE | 0x40; |
3430 | } |
3431 | outb(val, (brdp->iobase + ECP_EICONFR)); |
3432 | return(ptr); |
3433 | } |
3434 | |
3435 | /*****************************************************************************/ |
3436 | |
3437 | static void stli_ecpeireset(stlibrd_t *brdp) |
3438 | { |
3439 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); |
3440 | udelay(10); |
3441 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); |
3442 | udelay(500); |
3443 | } |
3444 | |
3445 | /*****************************************************************************/ |
3446 | |
3447 | /* |
3448 | * The following set of functions act on ECP MCA boards. |
3449 | */ |
3450 | |
3451 | static void stli_ecpmcenable(stlibrd_t *brdp) |
3452 | { |
3453 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); |
3454 | } |
3455 | |
3456 | /*****************************************************************************/ |
3457 | |
3458 | static void stli_ecpmcdisable(stlibrd_t *brdp) |
3459 | { |
3460 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); |
3461 | } |
3462 | |
3463 | /*****************************************************************************/ |
3464 | |
3465 | static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) |
3466 | { |
3467 | void *ptr; |
3468 | unsigned char val; |
3469 | |
3470 | if (offset > brdp->memsize) { |
3471 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " |
3472 | "range at line=%d(%d), brd=%d\n", |
3473 | (int) offset, line, __LINE__, brdp->brdnr); |
3474 | ptr = NULL; |
3475 | val = 0; |
3476 | } else { |
3477 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); |
3478 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; |
3479 | } |
3480 | outb(val, (brdp->iobase + ECP_MCCONFR)); |
3481 | return(ptr); |
3482 | } |
3483 | |
3484 | /*****************************************************************************/ |
3485 | |
3486 | static void stli_ecpmcreset(stlibrd_t *brdp) |
3487 | { |
3488 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); |
3489 | udelay(10); |
3490 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); |
3491 | udelay(500); |
3492 | } |
3493 | |
3494 | /*****************************************************************************/ |
3495 | |
3496 | /* |
3497 | * The following set of functions act on ECP PCI boards. |
3498 | */ |
3499 | |
3500 | static void stli_ecppciinit(stlibrd_t *brdp) |
3501 | { |
3502 | #ifdef DEBUG |
3503 | printk(KERN_DEBUG "stli_ecppciinit(brdp=%x)\n", (int) brdp); |
3504 | #endif |
3505 | |
3506 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
3507 | udelay(10); |
3508 | outb(0, (brdp->iobase + ECP_PCICONFR)); |
3509 | udelay(500); |
3510 | } |
3511 | |
3512 | /*****************************************************************************/ |
3513 | |
3514 | static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line) |
3515 | { |
3516 | void *ptr; |
3517 | unsigned char val; |
3518 | |
3519 | #ifdef DEBUG |
3520 | printk(KERN_DEBUG "stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)\n", |
3521 | (int) brdp, (int) offset, line); |
3522 | #endif |
3523 | |
3524 | if (offset > brdp->memsize) { |
3525 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " |
3526 | "range at line=%d(%d), board=%d\n", |
3527 | (int) offset, line, __LINE__, brdp->brdnr); |
3528 | ptr = NULL; |
3529 | val = 0; |
3530 | } else { |
3531 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); |
3532 | val = (offset / ECP_PCIPAGESIZE) << 1; |
3533 | } |
3534 | outb(val, (brdp->iobase + ECP_PCICONFR)); |
3535 | return(ptr); |
3536 | } |
3537 | |
3538 | /*****************************************************************************/ |
3539 | |
3540 | static void stli_ecppcireset(stlibrd_t *brdp) |
3541 | { |
3542 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
3543 | udelay(10); |
3544 | outb(0, (brdp->iobase + ECP_PCICONFR)); |
3545 | udelay(500); |
3546 | } |
3547 | |
3548 | /*****************************************************************************/ |
3549 | |
3550 | /* |
3551 | * The following routines act on ONboards. |
3552 | */ |
3553 | |
3554 | static void stli_onbinit(stlibrd_t *brdp) |
3555 | { |
3556 | unsigned long memconf; |
3557 | |
3558 | #ifdef DEBUG |
3559 | printk(KERN_DEBUG "stli_onbinit(brdp=%d)\n", (int) brdp); |
3560 | #endif |
3561 | |
3562 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
3563 | udelay(10); |
3564 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); |
3565 | mdelay(1000); |
3566 | |
3567 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; |
3568 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); |
3569 | outb(0x1, brdp->iobase); |
3570 | mdelay(1); |
3571 | } |
3572 | |
3573 | /*****************************************************************************/ |
3574 | |
3575 | static void stli_onbenable(stlibrd_t *brdp) |
3576 | { |
3577 | #ifdef DEBUG |
3578 | printk(KERN_DEBUG "stli_onbenable(brdp=%x)\n", (int) brdp); |
3579 | #endif |
3580 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); |
3581 | } |
3582 | |
3583 | /*****************************************************************************/ |
3584 | |
3585 | static void stli_onbdisable(stlibrd_t *brdp) |
3586 | { |
3587 | #ifdef DEBUG |
3588 | printk(KERN_DEBUG "stli_onbdisable(brdp=%x)\n", (int) brdp); |
3589 | #endif |
3590 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); |
3591 | } |
3592 | |
3593 | /*****************************************************************************/ |
3594 | |
3595 | static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) |
3596 | { |
3597 | void *ptr; |
3598 | |
3599 | #ifdef DEBUG |
3600 | printk(KERN_DEBUG "stli_onbgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, |
3601 | (int) offset); |
3602 | #endif |
3603 | |
3604 | if (offset > brdp->memsize) { |
3605 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " |
3606 | "range at line=%d(%d), brd=%d\n", |
3607 | (int) offset, line, __LINE__, brdp->brdnr); |
3608 | ptr = NULL; |
3609 | } else { |
3610 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); |
3611 | } |
3612 | return(ptr); |
3613 | } |
3614 | |
3615 | /*****************************************************************************/ |
3616 | |
3617 | static void stli_onbreset(stlibrd_t *brdp) |
3618 | { |
3619 | |
3620 | #ifdef DEBUG |
3621 | printk(KERN_DEBUG "stli_onbreset(brdp=%x)\n", (int) brdp); |
3622 | #endif |
3623 | |
3624 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
3625 | udelay(10); |
3626 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); |
3627 | mdelay(1000); |
3628 | } |
3629 | |
3630 | /*****************************************************************************/ |
3631 | |
3632 | /* |
3633 | * The following routines act on ONboard EISA. |
3634 | */ |
3635 | |
3636 | static void stli_onbeinit(stlibrd_t *brdp) |
3637 | { |
3638 | unsigned long memconf; |
3639 | |
3640 | #ifdef DEBUG |
3641 | printk(KERN_DEBUG "stli_onbeinit(brdp=%d)\n", (int) brdp); |
3642 | #endif |
3643 | |
3644 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
3645 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
3646 | udelay(10); |
3647 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
3648 | mdelay(1000); |
3649 | |
3650 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; |
3651 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); |
3652 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; |
3653 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); |
3654 | outb(0x1, brdp->iobase); |
3655 | mdelay(1); |
3656 | } |
3657 | |
3658 | /*****************************************************************************/ |
3659 | |
3660 | static void stli_onbeenable(stlibrd_t *brdp) |
3661 | { |
3662 | #ifdef DEBUG |
3663 | printk(KERN_DEBUG "stli_onbeenable(brdp=%x)\n", (int) brdp); |
3664 | #endif |
3665 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); |
3666 | } |
3667 | |
3668 | /*****************************************************************************/ |
3669 | |
3670 | static void stli_onbedisable(stlibrd_t *brdp) |
3671 | { |
3672 | #ifdef DEBUG |
3673 | printk(KERN_DEBUG "stli_onbedisable(brdp=%x)\n", (int) brdp); |
3674 | #endif |
3675 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
3676 | } |
3677 | |
3678 | /*****************************************************************************/ |
3679 | |
3680 | static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line) |
3681 | { |
3682 | void *ptr; |
3683 | unsigned char val; |
3684 | |
3685 | #ifdef DEBUG |
3686 | printk(KERN_DEBUG "stli_onbegetmemptr(brdp=%x,offset=%x,line=%d)\n", |
3687 | (int) brdp, (int) offset, line); |
3688 | #endif |
3689 | |
3690 | if (offset > brdp->memsize) { |
3691 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " |
3692 | "range at line=%d(%d), brd=%d\n", |
3693 | (int) offset, line, __LINE__, brdp->brdnr); |
3694 | ptr = NULL; |
3695 | val = 0; |
3696 | } else { |
3697 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); |
3698 | if (offset < ONB_EIPAGESIZE) |
3699 | val = ONB_EIENABLE; |
3700 | else |
3701 | val = ONB_EIENABLE | 0x40; |
3702 | } |
3703 | outb(val, (brdp->iobase + ONB_EICONFR)); |
3704 | return(ptr); |
3705 | } |
3706 | |
3707 | /*****************************************************************************/ |
3708 | |
3709 | static void stli_onbereset(stlibrd_t *brdp) |
3710 | { |
3711 | |
3712 | #ifdef DEBUG |
3713 | printk(KERN_ERR "stli_onbereset(brdp=%x)\n", (int) brdp); |
3714 | #endif |
3715 | |
3716 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
3717 | udelay(10); |
3718 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
3719 | mdelay(1000); |
3720 | } |
3721 | |
3722 | /*****************************************************************************/ |
3723 | |
3724 | /* |
3725 | * The following routines act on Brumby boards. |
3726 | */ |
3727 | |
3728 | static void stli_bbyinit(stlibrd_t *brdp) |
3729 | { |
3730 | |
3731 | #ifdef DEBUG |
3732 | printk(KERN_ERR "stli_bbyinit(brdp=%d)\n", (int) brdp); |
3733 | #endif |
3734 | |
3735 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3736 | udelay(10); |
3737 | outb(0, (brdp->iobase + BBY_ATCONFR)); |
3738 | mdelay(1000); |
3739 | outb(0x1, brdp->iobase); |
3740 | mdelay(1); |
3741 | } |
3742 | |
3743 | /*****************************************************************************/ |
3744 | |
3745 | static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line) |
3746 | { |
3747 | void *ptr; |
3748 | unsigned char val; |
3749 | |
3750 | #ifdef DEBUG |
3751 | printk(KERN_ERR "stli_bbygetmemptr(brdp=%x,offset=%x)\n", (int) brdp, |
3752 | (int) offset); |
3753 | #endif |
3754 | |
3755 | if (offset > brdp->memsize) { |
3756 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " |
3757 | "range at line=%d(%d), brd=%d\n", |
3758 | (int) offset, line, __LINE__, brdp->brdnr); |
3759 | ptr = NULL; |
3760 | val = 0; |
3761 | } else { |
3762 | ptr = brdp->membase + (offset % BBY_PAGESIZE); |
3763 | val = (unsigned char) (offset / BBY_PAGESIZE); |
3764 | } |
3765 | outb(val, (brdp->iobase + BBY_ATCONFR)); |
3766 | return(ptr); |
3767 | } |
3768 | |
3769 | /*****************************************************************************/ |
3770 | |
3771 | static void stli_bbyreset(stlibrd_t *brdp) |
3772 | { |
3773 | |
3774 | #ifdef DEBUG |
3775 | printk(KERN_DEBUG "stli_bbyreset(brdp=%x)\n", (int) brdp); |
3776 | #endif |
3777 | |
3778 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3779 | udelay(10); |
3780 | outb(0, (brdp->iobase + BBY_ATCONFR)); |
3781 | mdelay(1000); |
3782 | } |
3783 | |
3784 | /*****************************************************************************/ |
3785 | |
3786 | /* |
3787 | * The following routines act on original old Stallion boards. |
3788 | */ |
3789 | |
3790 | static void stli_stalinit(stlibrd_t *brdp) |
3791 | { |
3792 | |
3793 | #ifdef DEBUG |
3794 | printk(KERN_DEBUG "stli_stalinit(brdp=%d)\n", (int) brdp); |
3795 | #endif |
3796 | |
3797 | outb(0x1, brdp->iobase); |
3798 | mdelay(1000); |
3799 | } |
3800 | |
3801 | /*****************************************************************************/ |
3802 | |
3803 | static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) |
3804 | { |
3805 | void *ptr; |
3806 | |
3807 | #ifdef DEBUG |
3808 | printk(KERN_DEBUG "stli_stalgetmemptr(brdp=%x,offset=%x)\n", (int) brdp, |
3809 | (int) offset); |
3810 | #endif |
3811 | |
3812 | if (offset > brdp->memsize) { |
3813 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " |
3814 | "range at line=%d(%d), brd=%d\n", |
3815 | (int) offset, line, __LINE__, brdp->brdnr); |
3816 | ptr = NULL; |
3817 | } else { |
3818 | ptr = brdp->membase + (offset % STAL_PAGESIZE); |
3819 | } |
3820 | return(ptr); |
3821 | } |
3822 | |
3823 | /*****************************************************************************/ |
3824 | |
3825 | static void stli_stalreset(stlibrd_t *brdp) |
3826 | { |
3827 | volatile unsigned long *vecp; |
3828 | |
3829 | #ifdef DEBUG |
3830 | printk(KERN_DEBUG "stli_stalreset(brdp=%x)\n", (int) brdp); |
3831 | #endif |
3832 | |
3833 | vecp = (volatile unsigned long *) (brdp->membase + 0x30); |
3834 | *vecp = 0xffff0000; |
3835 | outb(0, brdp->iobase); |
3836 | mdelay(1000); |
3837 | } |
3838 | |
3839 | /*****************************************************************************/ |
3840 | |
3841 | /* |
3842 | * Try to find an ECP board and initialize it. This handles only ECP |
3843 | * board types. |
3844 | */ |
3845 | |
3846 | static int stli_initecp(stlibrd_t *brdp) |
3847 | { |
3848 | cdkecpsig_t sig; |
3849 | cdkecpsig_t *sigsp; |
3850 | unsigned int status, nxtid; |
3851 | char *name; |
3852 | int panelnr, nrports; |
3853 | |
3854 | #ifdef DEBUG |
3855 | printk(KERN_DEBUG "stli_initecp(brdp=%x)\n", (int) brdp); |
3856 | #endif |
3857 | |
3858 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) |
3859 | return -EIO; |
3860 | |
3861 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) |
3862 | { |
3863 | release_region(brdp->iobase, brdp->iosize); |
3864 | return(-ENODEV); |
3865 | } |
3866 | |
3867 | brdp->iosize = ECP_IOSIZE; |
3868 | |
3869 | /* |
3870 | * Based on the specific board type setup the common vars to access |
3871 | * and enable shared memory. Set all board specific information now |
3872 | * as well. |
3873 | */ |
3874 | switch (brdp->brdtype) { |
3875 | case BRD_ECP: |
3876 | brdp->membase = (void *) brdp->memaddr; |
3877 | brdp->memsize = ECP_MEMSIZE; |
3878 | brdp->pagesize = ECP_ATPAGESIZE; |
3879 | brdp->init = stli_ecpinit; |
3880 | brdp->enable = stli_ecpenable; |
3881 | brdp->reenable = stli_ecpenable; |
3882 | brdp->disable = stli_ecpdisable; |
3883 | brdp->getmemptr = stli_ecpgetmemptr; |
3884 | brdp->intr = stli_ecpintr; |
3885 | brdp->reset = stli_ecpreset; |
3886 | name = "serial(EC8/64)"; |
3887 | break; |
3888 | |
3889 | case BRD_ECPE: |
3890 | brdp->membase = (void *) brdp->memaddr; |
3891 | brdp->memsize = ECP_MEMSIZE; |
3892 | brdp->pagesize = ECP_EIPAGESIZE; |
3893 | brdp->init = stli_ecpeiinit; |
3894 | brdp->enable = stli_ecpeienable; |
3895 | brdp->reenable = stli_ecpeienable; |
3896 | brdp->disable = stli_ecpeidisable; |
3897 | brdp->getmemptr = stli_ecpeigetmemptr; |
3898 | brdp->intr = stli_ecpintr; |
3899 | brdp->reset = stli_ecpeireset; |
3900 | name = "serial(EC8/64-EI)"; |
3901 | break; |
3902 | |
3903 | case BRD_ECPMC: |
3904 | brdp->membase = (void *) brdp->memaddr; |
3905 | brdp->memsize = ECP_MEMSIZE; |
3906 | brdp->pagesize = ECP_MCPAGESIZE; |
3907 | brdp->init = NULL; |
3908 | brdp->enable = stli_ecpmcenable; |
3909 | brdp->reenable = stli_ecpmcenable; |
3910 | brdp->disable = stli_ecpmcdisable; |
3911 | brdp->getmemptr = stli_ecpmcgetmemptr; |
3912 | brdp->intr = stli_ecpintr; |
3913 | brdp->reset = stli_ecpmcreset; |
3914 | name = "serial(EC8/64-MCA)"; |
3915 | break; |
3916 | |
3917 | case BRD_ECPPCI: |
3918 | brdp->membase = (void *) brdp->memaddr; |
3919 | brdp->memsize = ECP_PCIMEMSIZE; |
3920 | brdp->pagesize = ECP_PCIPAGESIZE; |
3921 | brdp->init = stli_ecppciinit; |
3922 | brdp->enable = NULL; |
3923 | brdp->reenable = NULL; |
3924 | brdp->disable = NULL; |
3925 | brdp->getmemptr = stli_ecppcigetmemptr; |
3926 | brdp->intr = stli_ecpintr; |
3927 | brdp->reset = stli_ecppcireset; |
3928 | name = "serial(EC/RA-PCI)"; |
3929 | break; |
3930 | |
3931 | default: |
3932 | release_region(brdp->iobase, brdp->iosize); |
3933 | return(-EINVAL); |
3934 | } |
3935 | |
3936 | /* |
3937 | * The per-board operations structure is all set up, so now let's go |
3938 | * and get the board operational. Firstly initialize board configuration |
3939 | * registers. Set the memory mapping info so we can get at the boards |
3940 | * shared memory. |
3941 | */ |
3942 | EBRDINIT(brdp); |
3943 | |
3944 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); |
3945 | if (brdp->membase == (void *) NULL) |
3946 | { |
3947 | release_region(brdp->iobase, brdp->iosize); |
3948 | return(-ENOMEM); |
3949 | } |
3950 | |
3951 | /* |
3952 | * Now that all specific code is set up, enable the shared memory and |
3953 | * look for the a signature area that will tell us exactly what board |
3954 | * this is, and what it is connected to it. |
3955 | */ |
3956 | EBRDENABLE(brdp); |
3957 | sigsp = (cdkecpsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
3958 | memcpy(&sig, sigsp, sizeof(cdkecpsig_t)); |
3959 | EBRDDISABLE(brdp); |
3960 | |
3961 | #if 0 |
3962 | printk("%s(%d): sig-> magic=%x rom=%x panel=%x,%x,%x,%x,%x,%x,%x,%x\n", |
3963 | __FILE__, __LINE__, (int) sig.magic, sig.romver, sig.panelid[0], |
3964 | (int) sig.panelid[1], (int) sig.panelid[2], |
3965 | (int) sig.panelid[3], (int) sig.panelid[4], |
3966 | (int) sig.panelid[5], (int) sig.panelid[6], |
3967 | (int) sig.panelid[7]); |
3968 | #endif |
3969 | |
3970 | if (sig.magic != ECP_MAGIC) |
3971 | { |
3972 | release_region(brdp->iobase, brdp->iosize); |
3973 | return(-ENODEV); |
3974 | } |
3975 | |
3976 | /* |
3977 | * Scan through the signature looking at the panels connected to the |
3978 | * board. Calculate the total number of ports as we go. |
3979 | */ |
3980 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { |
3981 | status = sig.panelid[nxtid]; |
3982 | if ((status & ECH_PNLIDMASK) != nxtid) |
3983 | break; |
3984 | |
3985 | brdp->panelids[panelnr] = status; |
3986 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; |
3987 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) |
3988 | nxtid++; |
3989 | brdp->panels[panelnr] = nrports; |
3990 | brdp->nrports += nrports; |
3991 | nxtid++; |
3992 | brdp->nrpanels++; |
3993 | } |
3994 | |
3995 | |
3996 | brdp->state |= BST_FOUND; |
3997 | return(0); |
3998 | } |
3999 | |
4000 | /*****************************************************************************/ |
4001 | |
4002 | /* |
4003 | * Try to find an ONboard, Brumby or Stallion board and initialize it. |
4004 | * This handles only these board types. |
4005 | */ |
4006 | |
4007 | static int stli_initonb(stlibrd_t *brdp) |
4008 | { |
4009 | cdkonbsig_t sig; |
4010 | cdkonbsig_t *sigsp; |
4011 | char *name; |
4012 | int i; |
4013 | |
4014 | #ifdef DEBUG |
4015 | printk(KERN_DEBUG "stli_initonb(brdp=%x)\n", (int) brdp); |
4016 | #endif |
4017 | |
4018 | /* |
4019 | * Do a basic sanity check on the IO and memory addresses. |
4020 | */ |
4021 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) |
4022 | return(-ENODEV); |
4023 | |
4024 | brdp->iosize = ONB_IOSIZE; |
4025 | |
4026 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) |
4027 | return -EIO; |
4028 | |
4029 | /* |
4030 | * Based on the specific board type setup the common vars to access |
4031 | * and enable shared memory. Set all board specific information now |
4032 | * as well. |
4033 | */ |
4034 | switch (brdp->brdtype) { |
4035 | case BRD_ONBOARD: |
4036 | case BRD_ONBOARD32: |
4037 | case BRD_ONBOARD2: |
4038 | case BRD_ONBOARD2_32: |
4039 | case BRD_ONBOARDRS: |
4040 | brdp->membase = (void *) brdp->memaddr; |
4041 | brdp->memsize = ONB_MEMSIZE; |
4042 | brdp->pagesize = ONB_ATPAGESIZE; |
4043 | brdp->init = stli_onbinit; |
4044 | brdp->enable = stli_onbenable; |
4045 | brdp->reenable = stli_onbenable; |
4046 | brdp->disable = stli_onbdisable; |
4047 | brdp->getmemptr = stli_onbgetmemptr; |
4048 | brdp->intr = stli_ecpintr; |
4049 | brdp->reset = stli_onbreset; |
4050 | if (brdp->memaddr > 0x100000) |
4051 | brdp->enabval = ONB_MEMENABHI; |
4052 | else |
4053 | brdp->enabval = ONB_MEMENABLO; |
4054 | name = "serial(ONBoard)"; |
4055 | break; |
4056 | |
4057 | case BRD_ONBOARDE: |
4058 | brdp->membase = (void *) brdp->memaddr; |
4059 | brdp->memsize = ONB_EIMEMSIZE; |
4060 | brdp->pagesize = ONB_EIPAGESIZE; |
4061 | brdp->init = stli_onbeinit; |
4062 | brdp->enable = stli_onbeenable; |
4063 | brdp->reenable = stli_onbeenable; |
4064 | brdp->disable = stli_onbedisable; |
4065 | brdp->getmemptr = stli_onbegetmemptr; |
4066 | brdp->intr = stli_ecpintr; |
4067 | brdp->reset = stli_onbereset; |
4068 | name = "serial(ONBoard/E)"; |
4069 | break; |
4070 | |
4071 | case BRD_BRUMBY4: |
4072 | case BRD_BRUMBY8: |
4073 | case BRD_BRUMBY16: |
4074 | brdp->membase = (void *) brdp->memaddr; |
4075 | brdp->memsize = BBY_MEMSIZE; |
4076 | brdp->pagesize = BBY_PAGESIZE; |
4077 | brdp->init = stli_bbyinit; |
4078 | brdp->enable = NULL; |
4079 | brdp->reenable = NULL; |
4080 | brdp->disable = NULL; |
4081 | brdp->getmemptr = stli_bbygetmemptr; |
4082 | brdp->intr = stli_ecpintr; |
4083 | brdp->reset = stli_bbyreset; |
4084 | name = "serial(Brumby)"; |
4085 | break; |
4086 | |
4087 | case BRD_STALLION: |
4088 | brdp->membase = (void *) brdp->memaddr; |
4089 | brdp->memsize = STAL_MEMSIZE; |
4090 | brdp->pagesize = STAL_PAGESIZE; |
4091 | brdp->init = stli_stalinit; |
4092 | brdp->enable = NULL; |
4093 | brdp->reenable = NULL; |
4094 | brdp->disable = NULL; |
4095 | brdp->getmemptr = stli_stalgetmemptr; |
4096 | brdp->intr = stli_ecpintr; |
4097 | brdp->reset = stli_stalreset; |
4098 | name = "serial(Stallion)"; |
4099 | break; |
4100 | |
4101 | default: |
4102 | release_region(brdp->iobase, brdp->iosize); |
4103 | return(-EINVAL); |
4104 | } |
4105 | |
4106 | /* |
4107 | * The per-board operations structure is all set up, so now let's go |
4108 | * and get the board operational. Firstly initialize board configuration |
4109 | * registers. Set the memory mapping info so we can get at the boards |
4110 | * shared memory. |
4111 | */ |
4112 | EBRDINIT(brdp); |
4113 | |
4114 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); |
4115 | if (brdp->membase == (void *) NULL) |
4116 | { |
4117 | release_region(brdp->iobase, brdp->iosize); |
4118 | return(-ENOMEM); |
4119 | } |
4120 | |
4121 | /* |
4122 | * Now that all specific code is set up, enable the shared memory and |
4123 | * look for the a signature area that will tell us exactly what board |
4124 | * this is, and how many ports. |
4125 | */ |
4126 | EBRDENABLE(brdp); |
4127 | sigsp = (cdkonbsig_t *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
4128 | memcpy(&sig, sigsp, sizeof(cdkonbsig_t)); |
4129 | EBRDDISABLE(brdp); |
4130 | |
4131 | #if 0 |
4132 | printk("%s(%d): sig-> magic=%x:%x:%x:%x romver=%x amask=%x:%x:%x\n", |
4133 | __FILE__, __LINE__, sig.magic0, sig.magic1, sig.magic2, |
4134 | sig.magic3, sig.romver, sig.amask0, sig.amask1, sig.amask2); |
4135 | #endif |
4136 | |
4137 | if ((sig.magic0 != ONB_MAGIC0) || (sig.magic1 != ONB_MAGIC1) || |
4138 | (sig.magic2 != ONB_MAGIC2) || (sig.magic3 != ONB_MAGIC3)) |
4139 | { |
4140 | release_region(brdp->iobase, brdp->iosize); |
4141 | return(-ENODEV); |
4142 | } |
4143 | |
4144 | /* |
4145 | * Scan through the signature alive mask and calculate how many ports |
4146 | * there are on this board. |
4147 | */ |
4148 | brdp->nrpanels = 1; |
4149 | if (sig.amask1) { |
4150 | brdp->nrports = 32; |
4151 | } else { |
4152 | for (i = 0; (i < 16); i++) { |
4153 | if (((sig.amask0 << i) & 0x8000) == 0) |
4154 | break; |
4155 | } |
4156 | brdp->nrports = i; |
4157 | } |
4158 | brdp->panels[0] = brdp->nrports; |
4159 | |
4160 | |
4161 | brdp->state |= BST_FOUND; |
4162 | return(0); |
4163 | } |
4164 | |
4165 | /*****************************************************************************/ |
4166 | |
4167 | /* |
4168 | * Start up a running board. This routine is only called after the |
4169 | * code has been down loaded to the board and is operational. It will |
4170 | * read in the memory map, and get the show on the road... |
4171 | */ |
4172 | |
4173 | static int stli_startbrd(stlibrd_t *brdp) |
4174 | { |
4175 | volatile cdkhdr_t *hdrp; |
4176 | volatile cdkmem_t *memp; |
4177 | volatile cdkasy_t *ap; |
4178 | unsigned long flags; |
4179 | stliport_t *portp; |
4180 | int portnr, nrdevs, i, rc; |
4181 | |
4182 | #ifdef DEBUG |
4183 | printk(KERN_DEBUG "stli_startbrd(brdp=%x)\n", (int) brdp); |
4184 | #endif |
4185 | |
4186 | rc = 0; |
4187 | |
4188 | save_flags(flags); |
4189 | cli(); |
4190 | EBRDENABLE(brdp); |
4191 | hdrp = (volatile cdkhdr_t *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
4192 | nrdevs = hdrp->nrdevs; |
4193 | |
4194 | #if 0 |
4195 | printk("%s(%d): CDK version %d.%d.%d --> " |
4196 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", |
4197 | __FILE__, __LINE__, hdrp->ver_release, hdrp->ver_modification, |
4198 | hdrp->ver_fix, nrdevs, (int) hdrp->memp, (int) hdrp->hostp, |
4199 | (int) hdrp->slavep); |
4200 | #endif |
4201 | |
4202 | if (nrdevs < (brdp->nrports + 1)) { |
4203 | printk(KERN_ERR "STALLION: slave failed to allocate memory for " |
4204 | "all devices, devices=%d\n", nrdevs); |
4205 | brdp->nrports = nrdevs - 1; |
4206 | } |
4207 | brdp->nrdevs = nrdevs; |
4208 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; |
4209 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; |
4210 | brdp->bitsize = (nrdevs + 7) / 8; |
4211 | memp = (volatile cdkmem_t *) hdrp->memp; |
4212 | if (((unsigned long) memp) > brdp->memsize) { |
4213 | printk(KERN_ERR "STALLION: corrupted shared memory region?\n"); |
4214 | rc = -EIO; |
4215 | goto stli_donestartup; |
4216 | } |
4217 | memp = (volatile cdkmem_t *) EBRDGETMEMPTR(brdp, (unsigned long) memp); |
4218 | if (memp->dtype != TYP_ASYNCTRL) { |
4219 | printk(KERN_ERR "STALLION: no slave control device found\n"); |
4220 | goto stli_donestartup; |
4221 | } |
4222 | memp++; |
4223 | |
4224 | /* |
4225 | * Cycle through memory allocation of each port. We are guaranteed to |
4226 | * have all ports inside the first page of slave window, so no need to |
4227 | * change pages while reading memory map. |
4228 | */ |
4229 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { |
4230 | if (memp->dtype != TYP_ASYNC) |
4231 | break; |
4232 | portp = brdp->ports[portnr]; |
4233 | if (portp == (stliport_t *) NULL) |
4234 | break; |
4235 | portp->devnr = i; |
4236 | portp->addr = memp->offset; |
4237 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); |
4238 | portp->portidx = (unsigned char) (i / 8); |
4239 | portp->portbit = (unsigned char) (0x1 << (i % 8)); |
4240 | } |
4241 | |
4242 | hdrp->slavereq = 0xff; |
4243 | |
4244 | /* |
4245 | * For each port setup a local copy of the RX and TX buffer offsets |
4246 | * and sizes. We do this separate from the above, because we need to |
4247 | * move the shared memory page... |
4248 | */ |
4249 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { |
4250 | portp = brdp->ports[portnr]; |
4251 | if (portp == (stliport_t *) NULL) |
4252 | break; |
4253 | if (portp->addr == 0) |
4254 | break; |
4255 | ap = (volatile cdkasy_t *) EBRDGETMEMPTR(brdp, portp->addr); |
4256 | if (ap != (volatile cdkasy_t *) NULL) { |
4257 | portp->rxsize = ap->rxq.size; |
4258 | portp->txsize = ap->txq.size; |
4259 | portp->rxoffset = ap->rxq.offset; |
4260 | portp->txoffset = ap->txq.offset; |
4261 | } |
4262 | } |
4263 | |
4264 | stli_donestartup: |
4265 | EBRDDISABLE(brdp); |
4266 | restore_flags(flags); |
4267 | |
4268 | if (rc == 0) |
4269 | brdp->state |= BST_STARTED; |
4270 | |
4271 | if (! stli_timeron) { |
4272 | stli_timeron++; |
4273 | stli_timerlist.expires = STLI_TIMEOUT; |
4274 | add_timer(&stli_timerlist); |
4275 | } |
4276 | |
4277 | return(rc); |
4278 | } |
4279 | |
4280 | /*****************************************************************************/ |
4281 | |
4282 | /* |
4283 | * Probe and initialize the specified board. |
4284 | */ |
4285 | |
4286 | static int __init stli_brdinit(stlibrd_t *brdp) |
4287 | { |
4288 | #ifdef DEBUG |
4289 | printk(KERN_DEBUG "stli_brdinit(brdp=%x)\n", (int) brdp); |
4290 | #endif |
4291 | |
4292 | stli_brds[brdp->brdnr] = brdp; |
4293 | |
4294 | switch (brdp->brdtype) { |
4295 | case BRD_ECP: |
4296 | case BRD_ECPE: |
4297 | case BRD_ECPMC: |
4298 | case BRD_ECPPCI: |
4299 | stli_initecp(brdp); |
4300 | break; |
4301 | case BRD_ONBOARD: |
4302 | case BRD_ONBOARDE: |
4303 | case BRD_ONBOARD2: |
4304 | case BRD_ONBOARD32: |
4305 | case BRD_ONBOARD2_32: |
4306 | case BRD_ONBOARDRS: |
4307 | case BRD_BRUMBY4: |
4308 | case BRD_BRUMBY8: |
4309 | case BRD_BRUMBY16: |
4310 | case BRD_STALLION: |
4311 | stli_initonb(brdp); |
4312 | break; |
4313 | case BRD_EASYIO: |
4314 | case BRD_ECH: |
4315 | case BRD_ECHMC: |
4316 | case BRD_ECHPCI: |
4317 | printk(KERN_ERR "STALLION: %s board type not supported in " |
4318 | "this driver\n", stli_brdnames[brdp->brdtype]); |
4319 | return(ENODEV); |
4320 | default: |
4321 | printk(KERN_ERR "STALLION: board=%d is unknown board " |
4322 | "type=%d\n", brdp->brdnr, brdp->brdtype); |
4323 | return(ENODEV); |
4324 | } |
4325 | |
4326 | if ((brdp->state & BST_FOUND) == 0) { |
4327 | printk(KERN_ERR "STALLION: %s board not found, board=%d " |
4328 | "io=%x mem=%x\n", |
4329 | stli_brdnames[brdp->brdtype], brdp->brdnr, |
4330 | brdp->iobase, (int) brdp->memaddr); |
4331 | return(ENODEV); |
4332 | } |
4333 | |
4334 | stli_initports(brdp); |
4335 | printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x " |
4336 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], |
4337 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, |
4338 | brdp->nrpanels, brdp->nrports); |
4339 | return(0); |
4340 | } |
4341 | |
4342 | /*****************************************************************************/ |
4343 | |
4344 | /* |
4345 | * Probe around trying to find where the EISA boards shared memory |
4346 | * might be. This is a bit if hack, but it is the best we can do. |
4347 | */ |
4348 | |
4349 | static int stli_eisamemprobe(stlibrd_t *brdp) |
4350 | { |
4351 | cdkecpsig_t ecpsig, *ecpsigp; |
4352 | cdkonbsig_t onbsig, *onbsigp; |
4353 | int i, foundit; |
4354 | |
4355 | #ifdef DEBUG |
4356 | printk(KERN_DEBUG "stli_eisamemprobe(brdp=%x)\n", (int) brdp); |
4357 | #endif |
4358 | |
4359 | /* |
4360 | * First up we reset the board, to get it into a known state. There |
4361 | * is only 2 board types here we need to worry about. Don;t use the |
4362 | * standard board init routine here, it programs up the shared |
4363 | * memory address, and we don't know it yet... |
4364 | */ |
4365 | if (brdp->brdtype == BRD_ECPE) { |
4366 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
4367 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); |
4368 | udelay(10); |
4369 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); |
4370 | udelay(500); |
4371 | stli_ecpeienable(brdp); |
4372 | } else if (brdp->brdtype == BRD_ONBOARDE) { |
4373 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
4374 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
4375 | udelay(10); |
4376 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
4377 | mdelay(100); |
4378 | outb(0x1, brdp->iobase); |
4379 | mdelay(1); |
4380 | stli_onbeenable(brdp); |
4381 | } else { |
4382 | return(-ENODEV); |
4383 | } |
4384 | |
4385 | foundit = 0; |
4386 | brdp->memsize = ECP_MEMSIZE; |
4387 | |
4388 | /* |
4389 | * Board shared memory is enabled, so now we have a poke around and |
4390 | * see if we can find it. |
4391 | */ |
4392 | for (i = 0; (i < stli_eisamempsize); i++) { |
4393 | brdp->memaddr = stli_eisamemprobeaddrs[i]; |
4394 | brdp->membase = (void *) brdp->memaddr; |
4395 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); |
4396 | if (brdp->membase == (void *) NULL) |
4397 | continue; |
4398 | |
4399 | if (brdp->brdtype == BRD_ECPE) { |
4400 | ecpsigp = (cdkecpsig_t *) stli_ecpeigetmemptr(brdp, |
4401 | CDK_SIGADDR, __LINE__); |
4402 | memcpy(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); |
4403 | if (ecpsig.magic == ECP_MAGIC) |
4404 | foundit = 1; |
4405 | } else { |
4406 | onbsigp = (cdkonbsig_t *) stli_onbegetmemptr(brdp, |
4407 | CDK_SIGADDR, __LINE__); |
4408 | memcpy(&onbsig, onbsigp, sizeof(cdkonbsig_t)); |
4409 | if ((onbsig.magic0 == ONB_MAGIC0) && |
4410 | (onbsig.magic1 == ONB_MAGIC1) && |
4411 | (onbsig.magic2 == ONB_MAGIC2) && |
4412 | (onbsig.magic3 == ONB_MAGIC3)) |
4413 | foundit = 1; |
4414 | } |
4415 | |
4416 | iounmap(brdp->membase); |
4417 | if (foundit) |
4418 | break; |
4419 | } |
4420 | |
4421 | /* |
4422 | * Regardless of whether we found the shared memory or not we must |
4423 | * disable the region. After that return success or failure. |
4424 | */ |
4425 | if (brdp->brdtype == BRD_ECPE) |
4426 | stli_ecpeidisable(brdp); |
4427 | else |
4428 | stli_onbedisable(brdp); |
4429 | |
4430 | if (! foundit) { |
4431 | brdp->memaddr = 0; |
4432 | brdp->membase = NULL; |
4433 | printk(KERN_ERR "STALLION: failed to probe shared memory " |
4434 | "region for %s in EISA slot=%d\n", |
4435 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); |
4436 | return(-ENODEV); |
4437 | } |
4438 | return(0); |
4439 | } |
4440 | |
4441 | static int stli_getbrdnr(void) |
4442 | { |
4443 | int i; |
4444 | |
4445 | for (i = 0; i < STL_MAXBRDS; i++) { |
4446 | if (!stli_brds[i]) { |
4447 | if (i >= stli_nrbrds) |
4448 | stli_nrbrds = i + 1; |
4449 | return i; |
4450 | } |
4451 | } |
4452 | return -1; |
4453 | } |
4454 | |
4455 | /*****************************************************************************/ |
4456 | |
4457 | /* |
4458 | * Probe around and try to find any EISA boards in system. The biggest |
4459 | * problem here is finding out what memory address is associated with |
4460 | * an EISA board after it is found. The registers of the ECPE and |
4461 | * ONboardE are not readable - so we can't read them from there. We |
4462 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't |
4463 | * actually have any way to find out the real value. The best we can |
4464 | * do is go probing around in the usual places hoping we can find it. |
4465 | */ |
4466 | |
4467 | static int stli_findeisabrds(void) |
4468 | { |
4469 | stlibrd_t *brdp; |
4470 | unsigned int iobase, eid; |
4471 | int i; |
4472 | |
4473 | #ifdef DEBUG |
4474 | printk(KERN_DEBUG "stli_findeisabrds()\n"); |
4475 | #endif |
4476 | |
4477 | /* |
4478 | * Firstly check if this is an EISA system. Do this by probing for |
4479 | * the system board EISA ID. If this is not an EISA system then |
4480 | * don't bother going any further! |
4481 | */ |
4482 | outb(0xff, 0xc80); |
4483 | if (inb(0xc80) == 0xff) |
4484 | return(0); |
4485 | |
4486 | /* |
4487 | * Looks like an EISA system, so go searching for EISA boards. |
4488 | */ |
4489 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { |
4490 | outb(0xff, (iobase + 0xc80)); |
4491 | eid = inb(iobase + 0xc80); |
4492 | eid |= inb(iobase + 0xc81) << 8; |
4493 | if (eid != STL_EISAID) |
4494 | continue; |
4495 | |
4496 | /* |
4497 | * We have found a board. Need to check if this board was |
4498 | * statically configured already (just in case!). |
4499 | */ |
4500 | for (i = 0; (i < STL_MAXBRDS); i++) { |
4501 | brdp = stli_brds[i]; |
4502 | if (brdp == (stlibrd_t *) NULL) |
4503 | continue; |
4504 | if (brdp->iobase == iobase) |
4505 | break; |
4506 | } |
4507 | if (i < STL_MAXBRDS) |
4508 | continue; |
4509 | |
4510 | /* |
4511 | * We have found a Stallion board and it is not configured already. |
4512 | * Allocate a board structure and initialize it. |
4513 | */ |
4514 | if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) |
4515 | return(-ENOMEM); |
4516 | if ((brdp->brdnr = stli_getbrdnr()) < 0) |
4517 | return(-ENOMEM); |
4518 | eid = inb(iobase + 0xc82); |
4519 | if (eid == ECP_EISAID) |
4520 | brdp->brdtype = BRD_ECPE; |
4521 | else if (eid == ONB_EISAID) |
4522 | brdp->brdtype = BRD_ONBOARDE; |
4523 | else |
4524 | brdp->brdtype = BRD_UNKNOWN; |
4525 | brdp->iobase = iobase; |
4526 | outb(0x1, (iobase + 0xc84)); |
4527 | if (stli_eisamemprobe(brdp)) |
4528 | outb(0, (iobase + 0xc84)); |
4529 | stli_brdinit(brdp); |
4530 | } |
4531 | |
4532 | return(0); |
4533 | } |
4534 | |
4535 | /*****************************************************************************/ |
4536 | |
4537 | /* |
4538 | * Find the next available board number that is free. |
4539 | */ |
4540 | |
4541 | /*****************************************************************************/ |
4542 | |
4543 | #ifdef CONFIG_PCI |
4544 | |
4545 | /* |
4546 | * We have a Stallion board. Allocate a board structure and |
4547 | * initialize it. Read its IO and MEMORY resources from PCI |
4548 | * configuration space. |
4549 | */ |
4550 | |
4551 | static int stli_initpcibrd(int brdtype, struct pci_dev *devp) |
4552 | { |
4553 | stlibrd_t *brdp; |
4554 | |
4555 | #ifdef DEBUG |
4556 | printk(KERN_DEBUG "stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n", |
4557 | brdtype, dev->bus->number, dev->devfn); |
4558 | #endif |
4559 | |
4560 | if (pci_enable_device(devp)) |
4561 | return(-EIO); |
4562 | if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) |
4563 | return(-ENOMEM); |
4564 | if ((brdp->brdnr = stli_getbrdnr()) < 0) { |
4565 | printk(KERN_INFO "STALLION: too many boards found, " |
4566 | "maximum supported %d\n", STL_MAXBRDS); |
4567 | return(0); |
4568 | } |
4569 | brdp->brdtype = brdtype; |
4570 | |
4571 | #ifdef DEBUG |
4572 | printk(KERN_DEBUG "%s(%d): BAR[]=%lx,%lx,%lx,%lx\n", __FILE__, __LINE__, |
4573 | pci_resource_start(devp, 0), |
4574 | pci_resource_start(devp, 1), |
4575 | pci_resource_start(devp, 2), |
4576 | pci_resource_start(devp, 3)); |
4577 | #endif |
4578 | |
4579 | /* |
4580 | * We have all resources from the board, so lets setup the actual |
4581 | * board structure now. |
4582 | */ |
4583 | brdp->iobase = pci_resource_start(devp, 3); |
4584 | brdp->memaddr = pci_resource_start(devp, 2); |
4585 | stli_brdinit(brdp); |
4586 | |
4587 | return(0); |
4588 | } |
4589 | |
4590 | /*****************************************************************************/ |
4591 | |
4592 | /* |
4593 | * Find all Stallion PCI boards that might be installed. Initialize each |
4594 | * one as it is found. |
4595 | */ |
4596 | |
4597 | static int stli_findpcibrds(void) |
4598 | { |
4599 | struct pci_dev *dev = NULL; |
4600 | int rc; |
4601 | |
4602 | #ifdef DEBUG |
4603 | printk("stli_findpcibrds()\n"); |
4604 | #endif |
4605 | |
4606 | while ((dev = pci_find_device(PCI_VENDOR_ID_STALLION, |
4607 | PCI_DEVICE_ID_ECRA, dev))) { |
4608 | if ((rc = stli_initpcibrd(BRD_ECPPCI, dev))) |
4609 | return(rc); |
4610 | } |
4611 | |
4612 | return(0); |
4613 | } |
4614 | |
4615 | #endif |
4616 | |
4617 | /*****************************************************************************/ |
4618 | |
4619 | /* |
4620 | * Allocate a new board structure. Fill out the basic info in it. |
4621 | */ |
4622 | |
4623 | static stlibrd_t *stli_allocbrd(void) |
4624 | { |
4625 | stlibrd_t *brdp; |
4626 | |
4627 | brdp = (stlibrd_t *) stli_memalloc(sizeof(stlibrd_t)); |
4628 | if (brdp == (stlibrd_t *) NULL) { |
4629 | printk(KERN_ERR "STALLION: failed to allocate memory " |
4630 | "(size=%d)\n", sizeof(stlibrd_t)); |
4631 | return((stlibrd_t *) NULL); |
4632 | } |
4633 | |
4634 | memset(brdp, 0, sizeof(stlibrd_t)); |
4635 | brdp->magic = STLI_BOARDMAGIC; |
4636 | return(brdp); |
4637 | } |
4638 | |
4639 | /*****************************************************************************/ |
4640 | |
4641 | /* |
4642 | * Scan through all the boards in the configuration and see what we |
4643 | * can find. |
4644 | */ |
4645 | |
4646 | static int stli_initbrds(void) |
4647 | { |
4648 | stlibrd_t *brdp, *nxtbrdp; |
4649 | stlconf_t *confp; |
4650 | int i, j; |
4651 | |
4652 | #ifdef DEBUG |
4653 | printk(KERN_DEBUG "stli_initbrds()\n"); |
4654 | #endif |
4655 | |
4656 | if (stli_nrbrds > STL_MAXBRDS) { |
4657 | printk(KERN_INFO "STALLION: too many boards in configuration " |
4658 | "table, truncating to %d\n", STL_MAXBRDS); |
4659 | stli_nrbrds = STL_MAXBRDS; |
4660 | } |
4661 | |
4662 | /* |
4663 | * Firstly scan the list of static boards configured. Allocate |
4664 | * resources and initialize the boards as found. If this is a |
4665 | * module then let the module args override static configuration. |
4666 | */ |
4667 | for (i = 0; (i < stli_nrbrds); i++) { |
4668 | confp = &stli_brdconf[i]; |
4669 | #ifdef MODULE |
4670 | stli_parsebrd(confp, stli_brdsp[i]); |
4671 | #endif |
4672 | if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL) |
4673 | return(-ENOMEM); |
4674 | brdp->brdnr = i; |
4675 | brdp->brdtype = confp->brdtype; |
4676 | brdp->iobase = confp->ioaddr1; |
4677 | brdp->memaddr = confp->memaddr; |
4678 | stli_brdinit(brdp); |
4679 | } |
4680 | |
4681 | /* |
4682 | * Static configuration table done, so now use dynamic methods to |
4683 | * see if any more boards should be configured. |
4684 | */ |
4685 | #ifdef MODULE |
4686 | stli_argbrds(); |
4687 | #endif |
4688 | if (stli_eisaprobe) |
4689 | stli_findeisabrds(); |
4690 | #ifdef CONFIG_PCI |
4691 | stli_findpcibrds(); |
4692 | #endif |
4693 | |
4694 | /* |
4695 | * All found boards are initialized. Now for a little optimization, if |
4696 | * no boards are sharing the "shared memory" regions then we can just |
4697 | * leave them all enabled. This is in fact the usual case. |
4698 | */ |
4699 | stli_shared = 0; |
4700 | if (stli_nrbrds > 1) { |
4701 | for (i = 0; (i < stli_nrbrds); i++) { |
4702 | brdp = stli_brds[i]; |
4703 | if (brdp == (stlibrd_t *) NULL) |
4704 | continue; |
4705 | for (j = i + 1; (j < stli_nrbrds); j++) { |
4706 | nxtbrdp = stli_brds[j]; |
4707 | if (nxtbrdp == (stlibrd_t *) NULL) |
4708 | continue; |
4709 | if ((brdp->membase >= nxtbrdp->membase) && |
4710 | (brdp->membase <= (nxtbrdp->membase + |
4711 | nxtbrdp->memsize - 1))) { |
4712 | stli_shared++; |
4713 | break; |
4714 | } |
4715 | } |
4716 | } |
4717 | } |
4718 | |
4719 | if (stli_shared == 0) { |
4720 | for (i = 0; (i < stli_nrbrds); i++) { |
4721 | brdp = stli_brds[i]; |
4722 | if (brdp == (stlibrd_t *) NULL) |
4723 | continue; |
4724 | if (brdp->state & BST_FOUND) { |
4725 | EBRDENABLE(brdp); |
4726 | brdp->enable = NULL; |
4727 | brdp->disable = NULL; |
4728 | } |
4729 | } |
4730 | } |
4731 | |
4732 | return(0); |
4733 | } |
4734 | |
4735 | /*****************************************************************************/ |
4736 | |
4737 | /* |
4738 | * Code to handle an "staliomem" read operation. This device is the |
4739 | * contents of the board shared memory. It is used for down loading |
4740 | * the slave image (and debugging :-) |
4741 | */ |
4742 | |
4743 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) |
4744 | { |
4745 | unsigned long flags; |
4746 | void *memptr; |
4747 | stlibrd_t *brdp; |
4748 | int brdnr, size, n; |
4749 | |
4750 | #ifdef DEBUG |
4751 | printk(KERN_DEBUG "stli_memread(fp=%x,buf=%x,count=%x,offp=%x)\n", |
4752 | (int) fp, (int) buf, count, (int) offp); |
4753 | #endif |
4754 | |
4755 | brdnr = iminor(fp->f_dentry->d_inode); |
4756 | if (brdnr >= stli_nrbrds) |
4757 | return(-ENODEV); |
4758 | brdp = stli_brds[brdnr]; |
4759 | if (brdp == (stlibrd_t *) NULL) |
4760 | return(-ENODEV); |
4761 | if (brdp->state == 0) |
4762 | return(-ENODEV); |
4763 | if (fp->f_pos >= brdp->memsize) |
4764 | return(0); |
4765 | |
4766 | size = MIN(count, (brdp->memsize - fp->f_pos)); |
4767 | |
4768 | save_flags(flags); |
4769 | cli(); |
4770 | EBRDENABLE(brdp); |
4771 | while (size > 0) { |
4772 | memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos); |
4773 | n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize))); |
4774 | if (copy_to_user(buf, memptr, n)) { |
4775 | count = -EFAULT; |
4776 | goto out; |
4777 | } |
4778 | fp->f_pos += n; |
4779 | buf += n; |
4780 | size -= n; |
4781 | } |
4782 | out: |
4783 | EBRDDISABLE(brdp); |
4784 | restore_flags(flags); |
4785 | |
4786 | return(count); |
4787 | } |
4788 | |
4789 | /*****************************************************************************/ |
4790 | |
4791 | /* |
4792 | * Code to handle an "staliomem" write operation. This device is the |
4793 | * contents of the board shared memory. It is used for down loading |
4794 | * the slave image (and debugging :-) |
4795 | */ |
4796 | |
4797 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) |
4798 | { |
4799 | unsigned long flags; |
4800 | void *memptr; |
4801 | stlibrd_t *brdp; |
4802 | char __user *chbuf; |
4803 | int brdnr, size, n; |
4804 | |
4805 | #ifdef DEBUG |
4806 | printk(KERN_DEBUG "stli_memwrite(fp=%x,buf=%x,count=%x,offp=%x)\n", |
4807 | (int) fp, (int) buf, count, (int) offp); |
4808 | #endif |
4809 | |
4810 | brdnr = iminor(fp->f_dentry->d_inode); |
4811 | if (brdnr >= stli_nrbrds) |
4812 | return(-ENODEV); |
4813 | brdp = stli_brds[brdnr]; |
4814 | if (brdp == (stlibrd_t *) NULL) |
4815 | return(-ENODEV); |
4816 | if (brdp->state == 0) |
4817 | return(-ENODEV); |
4818 | if (fp->f_pos >= brdp->memsize) |
4819 | return(0); |
4820 | |
4821 | chbuf = (char __user *) buf; |
4822 | size = MIN(count, (brdp->memsize - fp->f_pos)); |
4823 | |
4824 | save_flags(flags); |
4825 | cli(); |
4826 | EBRDENABLE(brdp); |
4827 | while (size > 0) { |
4828 | memptr = (void *) EBRDGETMEMPTR(brdp, fp->f_pos); |
4829 | n = MIN(size, (brdp->pagesize - (((unsigned long) fp->f_pos) % brdp->pagesize))); |
4830 | if (copy_from_user(memptr, chbuf, n)) { |
4831 | count = -EFAULT; |
4832 | goto out; |
4833 | } |
4834 | fp->f_pos += n; |
4835 | chbuf += n; |
4836 | size -= n; |
4837 | } |
4838 | out: |
4839 | EBRDDISABLE(brdp); |
4840 | restore_flags(flags); |
4841 | |
4842 | return(count); |
4843 | } |
4844 | |
4845 | /*****************************************************************************/ |
4846 | |
4847 | /* |
4848 | * Return the board stats structure to user app. |
4849 | */ |
4850 | |
4851 | static int stli_getbrdstats(combrd_t __user *bp) |
4852 | { |
4853 | stlibrd_t *brdp; |
4854 | int i; |
4855 | |
4856 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) |
4857 | return -EFAULT; |
4858 | if (stli_brdstats.brd >= STL_MAXBRDS) |
4859 | return(-ENODEV); |
4860 | brdp = stli_brds[stli_brdstats.brd]; |
4861 | if (brdp == (stlibrd_t *) NULL) |
4862 | return(-ENODEV); |
4863 | |
4864 | memset(&stli_brdstats, 0, sizeof(combrd_t)); |
4865 | stli_brdstats.brd = brdp->brdnr; |
4866 | stli_brdstats.type = brdp->brdtype; |
4867 | stli_brdstats.hwid = 0; |
4868 | stli_brdstats.state = brdp->state; |
4869 | stli_brdstats.ioaddr = brdp->iobase; |
4870 | stli_brdstats.memaddr = brdp->memaddr; |
4871 | stli_brdstats.nrpanels = brdp->nrpanels; |
4872 | stli_brdstats.nrports = brdp->nrports; |
4873 | for (i = 0; (i < brdp->nrpanels); i++) { |
4874 | stli_brdstats.panels[i].panel = i; |
4875 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; |
4876 | stli_brdstats.panels[i].nrports = brdp->panels[i]; |
4877 | } |
4878 | |
4879 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) |
4880 | return -EFAULT; |
4881 | return(0); |
4882 | } |
4883 | |
4884 | /*****************************************************************************/ |
4885 | |
4886 | /* |
4887 | * Resolve the referenced port number into a port struct pointer. |
4888 | */ |
4889 | |
4890 | static stliport_t *stli_getport(int brdnr, int panelnr, int portnr) |
4891 | { |
4892 | stlibrd_t *brdp; |
4893 | int i; |
4894 | |
4895 | if ((brdnr < 0) || (brdnr >= STL_MAXBRDS)) |
4896 | return((stliport_t *) NULL); |
4897 | brdp = stli_brds[brdnr]; |
4898 | if (brdp == (stlibrd_t *) NULL) |
4899 | return((stliport_t *) NULL); |
4900 | for (i = 0; (i < panelnr); i++) |
4901 | portnr += brdp->panels[i]; |
4902 | if ((portnr < 0) || (portnr >= brdp->nrports)) |
4903 | return((stliport_t *) NULL); |
4904 | return(brdp->ports[portnr]); |
4905 | } |
4906 | |
4907 | /*****************************************************************************/ |
4908 | |
4909 | /* |
4910 | * Return the port stats structure to user app. A NULL port struct |
4911 | * pointer passed in means that we need to find out from the app |
4912 | * what port to get stats for (used through board control device). |
4913 | */ |
4914 | |
4915 | static int stli_portcmdstats(stliport_t *portp) |
4916 | { |
4917 | unsigned long flags; |
4918 | stlibrd_t *brdp; |
4919 | int rc; |
4920 | |
4921 | memset(&stli_comstats, 0, sizeof(comstats_t)); |
4922 | |
4923 | if (portp == (stliport_t *) NULL) |
4924 | return(-ENODEV); |
4925 | brdp = stli_brds[portp->brdnr]; |
4926 | if (brdp == (stlibrd_t *) NULL) |
4927 | return(-ENODEV); |
4928 | |
4929 | if (brdp->state & BST_STARTED) { |
4930 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, |
4931 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) |
4932 | return(rc); |
4933 | } else { |
4934 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); |
4935 | } |
4936 | |
4937 | stli_comstats.brd = portp->brdnr; |
4938 | stli_comstats.panel = portp->panelnr; |
4939 | stli_comstats.port = portp->portnr; |
4940 | stli_comstats.state = portp->state; |
4941 | stli_comstats.flags = portp->flags; |
4942 | |
4943 | save_flags(flags); |
4944 | cli(); |
4945 | if (portp->tty != (struct tty_struct *) NULL) { |
4946 | if (portp->tty->driver_data == portp) { |
4947 | stli_comstats.ttystate = portp->tty->flags; |
4948 | stli_comstats.rxbuffered = portp->tty->flip.count; |
4949 | if (portp->tty->termios != (struct termios *) NULL) { |
4950 | stli_comstats.cflags = portp->tty->termios->c_cflag; |
4951 | stli_comstats.iflags = portp->tty->termios->c_iflag; |
4952 | stli_comstats.oflags = portp->tty->termios->c_oflag; |
4953 | stli_comstats.lflags = portp->tty->termios->c_lflag; |
4954 | } |
4955 | } |
4956 | } |
4957 | restore_flags(flags); |
4958 | |
4959 | stli_comstats.txtotal = stli_cdkstats.txchars; |
4960 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; |
4961 | stli_comstats.txbuffered = stli_cdkstats.txringq; |
4962 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; |
4963 | stli_comstats.rxoverrun = stli_cdkstats.overruns; |
4964 | stli_comstats.rxparity = stli_cdkstats.parity; |
4965 | stli_comstats.rxframing = stli_cdkstats.framing; |
4966 | stli_comstats.rxlost = stli_cdkstats.ringover; |
4967 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; |
4968 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; |
4969 | stli_comstats.txxon = stli_cdkstats.txstart; |
4970 | stli_comstats.txxoff = stli_cdkstats.txstop; |
4971 | stli_comstats.rxxon = stli_cdkstats.rxstart; |
4972 | stli_comstats.rxxoff = stli_cdkstats.rxstop; |
4973 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; |
4974 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; |
4975 | stli_comstats.modem = stli_cdkstats.dcdcnt; |
4976 | stli_comstats.hwid = stli_cdkstats.hwid; |
4977 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); |
4978 | |
4979 | return(0); |
4980 | } |
4981 | |
4982 | /*****************************************************************************/ |
4983 | |
4984 | /* |
4985 | * Return the port stats structure to user app. A NULL port struct |
4986 | * pointer passed in means that we need to find out from the app |
4987 | * what port to get stats for (used through board control device). |
4988 | */ |
4989 | |
4990 | static int stli_getportstats(stliport_t *portp, comstats_t __user *cp) |
4991 | { |
4992 | stlibrd_t *brdp; |
4993 | int rc; |
4994 | |
4995 | if (!portp) { |
4996 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) |
4997 | return -EFAULT; |
4998 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, |
4999 | stli_comstats.port); |
5000 | if (!portp) |
5001 | return -ENODEV; |
5002 | } |
5003 | |
5004 | brdp = stli_brds[portp->brdnr]; |
5005 | if (!brdp) |
5006 | return -ENODEV; |
5007 | |
5008 | if ((rc = stli_portcmdstats(portp)) < 0) |
5009 | return rc; |
5010 | |
5011 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? |
5012 | -EFAULT : 0; |
5013 | } |
5014 | |
5015 | /*****************************************************************************/ |
5016 | |
5017 | /* |
5018 | * Clear the port stats structure. We also return it zeroed out... |
5019 | */ |
5020 | |
5021 | static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp) |
5022 | { |
5023 | stlibrd_t *brdp; |
5024 | int rc; |
5025 | |
5026 | if (!portp) { |
5027 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) |
5028 | return -EFAULT; |
5029 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, |
5030 | stli_comstats.port); |
5031 | if (!portp) |
5032 | return -ENODEV; |
5033 | } |
5034 | |
5035 | brdp = stli_brds[portp->brdnr]; |
5036 | if (!brdp) |
5037 | return -ENODEV; |
5038 | |
5039 | if (brdp->state & BST_STARTED) { |
5040 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) |
5041 | return rc; |
5042 | } |
5043 | |
5044 | memset(&stli_comstats, 0, sizeof(comstats_t)); |
5045 | stli_comstats.brd = portp->brdnr; |
5046 | stli_comstats.panel = portp->panelnr; |
5047 | stli_comstats.port = portp->portnr; |
5048 | |
5049 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) |
5050 | return -EFAULT; |
5051 | return 0; |
5052 | } |
5053 | |
5054 | /*****************************************************************************/ |
5055 | |
5056 | /* |
5057 | * Return the entire driver ports structure to a user app. |
5058 | */ |
5059 | |
5060 | static int stli_getportstruct(stliport_t __user *arg) |
5061 | { |
5062 | stliport_t *portp; |
5063 | |
5064 | if (copy_from_user(&stli_dummyport, arg, sizeof(stliport_t))) |
5065 | return -EFAULT; |
5066 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, |
5067 | stli_dummyport.portnr); |
5068 | if (!portp) |
5069 | return -ENODEV; |
5070 | if (copy_to_user(arg, portp, sizeof(stliport_t))) |
5071 | return -EFAULT; |
5072 | return 0; |
5073 | } |
5074 | |
5075 | /*****************************************************************************/ |
5076 | |
5077 | /* |
5078 | * Return the entire driver board structure to a user app. |
5079 | */ |
5080 | |
5081 | static int stli_getbrdstruct(stlibrd_t __user *arg) |
5082 | { |
5083 | stlibrd_t *brdp; |
5084 | |
5085 | if (copy_from_user(&stli_dummybrd, arg, sizeof(stlibrd_t))) |
5086 | return -EFAULT; |
5087 | if ((stli_dummybrd.brdnr < 0) || (stli_dummybrd.brdnr >= STL_MAXBRDS)) |
5088 | return -ENODEV; |
5089 | brdp = stli_brds[stli_dummybrd.brdnr]; |
5090 | if (!brdp) |
5091 | return -ENODEV; |
5092 | if (copy_to_user(arg, brdp, sizeof(stlibrd_t))) |
5093 | return -EFAULT; |
5094 | return 0; |
5095 | } |
5096 | |
5097 | /*****************************************************************************/ |
5098 | |
5099 | /* |
5100 | * The "staliomem" device is also required to do some special operations on |
5101 | * the board. We need to be able to send an interrupt to the board, |
5102 | * reset it, and start/stop it. |
5103 | */ |
5104 | |
5105 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg) |
5106 | { |
5107 | stlibrd_t *brdp; |
5108 | int brdnr, rc, done; |
5109 | void __user *argp = (void __user *)arg; |
5110 | |
5111 | #ifdef DEBUG |
5112 | printk(KERN_DEBUG "stli_memioctl(ip=%x,fp=%x,cmd=%x,arg=%x)\n", |
5113 | (int) ip, (int) fp, cmd, (int) arg); |
5114 | #endif |
5115 | |
5116 | /* |
5117 | * First up handle the board independent ioctls. |
5118 | */ |
5119 | done = 0; |
5120 | rc = 0; |
5121 | |
5122 | switch (cmd) { |
5123 | case COM_GETPORTSTATS: |
5124 | rc = stli_getportstats(NULL, argp); |
5125 | done++; |
5126 | break; |
5127 | case COM_CLRPORTSTATS: |
5128 | rc = stli_clrportstats(NULL, argp); |
5129 | done++; |
5130 | break; |
5131 | case COM_GETBRDSTATS: |
5132 | rc = stli_getbrdstats(argp); |
5133 | done++; |
5134 | break; |
5135 | case COM_READPORT: |
5136 | rc = stli_getportstruct(argp); |
5137 | done++; |
5138 | break; |
5139 | case COM_READBOARD: |
5140 | rc = stli_getbrdstruct(argp); |
5141 | done++; |
5142 | break; |
5143 | } |
5144 | |
5145 | if (done) |
5146 | return(rc); |
5147 | |
5148 | /* |
5149 | * Now handle the board specific ioctls. These all depend on the |
5150 | * minor number of the device they were called from. |
5151 | */ |
5152 | brdnr = iminor(ip); |
5153 | if (brdnr >= STL_MAXBRDS) |
5154 | return(-ENODEV); |
5155 | brdp = stli_brds[brdnr]; |
5156 | if (!brdp) |
5157 | return(-ENODEV); |
5158 | if (brdp->state == 0) |
5159 | return(-ENODEV); |
5160 | |
5161 | switch (cmd) { |
5162 | case STL_BINTR: |
5163 | EBRDINTR(brdp); |
5164 | break; |
5165 | case STL_BSTART: |
5166 | rc = stli_startbrd(brdp); |
5167 | break; |
5168 | case STL_BSTOP: |
5169 | brdp->state &= ~BST_STARTED; |
5170 | break; |
5171 | case STL_BRESET: |
5172 | brdp->state &= ~BST_STARTED; |
5173 | EBRDRESET(brdp); |
5174 | if (stli_shared == 0) { |
5175 | if (brdp->reenable != NULL) |
5176 | (* brdp->reenable)(brdp); |
5177 | } |
5178 | break; |
5179 | default: |
5180 | rc = -ENOIOCTLCMD; |
5181 | break; |
5182 | } |
5183 | |
5184 | return(rc); |
5185 | } |
5186 | |
5187 | static struct tty_operations stli_ops = { |
5188 | .open = stli_open, |
5189 | .close = stli_close, |
5190 | .write = stli_write, |
5191 | .put_char = stli_putchar, |
5192 | .flush_chars = stli_flushchars, |
5193 | .write_room = stli_writeroom, |
5194 | .chars_in_buffer = stli_charsinbuffer, |
5195 | .ioctl = stli_ioctl, |
5196 | .set_termios = stli_settermios, |
5197 | .throttle = stli_throttle, |
5198 | .unthrottle = stli_unthrottle, |
5199 | .stop = stli_stop, |
5200 | .start = stli_start, |
5201 | .hangup = stli_hangup, |
5202 | .flush_buffer = stli_flushbuffer, |
5203 | .break_ctl = stli_breakctl, |
5204 | .wait_until_sent = stli_waituntilsent, |
5205 | .send_xchar = stli_sendxchar, |
5206 | .read_proc = stli_readproc, |
5207 | .tiocmget = stli_tiocmget, |
5208 | .tiocmset = stli_tiocmset, |
5209 | }; |
5210 | |
5211 | /*****************************************************************************/ |
5212 | |
5213 | int __init stli_init(void) |
5214 | { |
5215 | int i; |
5216 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); |
5217 | |
5218 | stli_initbrds(); |
5219 | |
5220 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); |
5221 | if (!stli_serial) |
5222 | return -ENOMEM; |
5223 | |
5224 | /* |
5225 | * Allocate a temporary write buffer. |
5226 | */ |
5227 | stli_tmpwritebuf = (char *) stli_memalloc(STLI_TXBUFSIZE); |
5228 | if (stli_tmpwritebuf == (char *) NULL) |
5229 | printk(KERN_ERR "STALLION: failed to allocate memory " |
5230 | "(size=%d)\n", STLI_TXBUFSIZE); |
5231 | stli_txcookbuf = stli_memalloc(STLI_TXBUFSIZE); |
5232 | if (stli_txcookbuf == (char *) NULL) |
5233 | printk(KERN_ERR "STALLION: failed to allocate memory " |
5234 | "(size=%d)\n", STLI_TXBUFSIZE); |
5235 | |
5236 | /* |
5237 | * Set up a character driver for the shared memory region. We need this |
5238 | * to down load the slave code image. Also it is a useful debugging tool. |
5239 | */ |
5240 | if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem)) |
5241 | printk(KERN_ERR "STALLION: failed to register serial memory " |
5242 | "device\n"); |
5243 | |
5244 | devfs_mk_dir("staliomem"); |
5245 | istallion_class = class_simple_create(THIS_MODULE, "staliomem"); |
5246 | for (i = 0; i < 4; i++) { |
5247 | devfs_mk_cdev(MKDEV(STL_SIOMEMMAJOR, i), |
5248 | S_IFCHR | S_IRUSR | S_IWUSR, |
5249 | "staliomem/%d", i); |
5250 | class_simple_device_add(istallion_class, MKDEV(STL_SIOMEMMAJOR, i), |
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 | /*****************************************************************************/ |