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1da177e4 LT |
1 | /*****************************************************************************/ |
2 | ||
3 | /* | |
4 | * istallion.c -- stallion intelligent multiport serial driver. | |
5 | * | |
6 | * Copyright (C) 1996-1999 Stallion Technologies | |
7 | * Copyright (C) 1994-1996 Greg Ungerer. | |
8 | * | |
9 | * This code is loosely based on the Linux serial driver, written by | |
10 | * Linus Torvalds, Theodore T'so and others. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
27 | /*****************************************************************************/ | |
28 | ||
1da177e4 LT |
29 | #include <linux/module.h> |
30 | #include <linux/slab.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/tty.h> | |
33 | #include <linux/tty_flip.h> | |
34 | #include <linux/serial.h> | |
35 | #include <linux/cdk.h> | |
36 | #include <linux/comstats.h> | |
37 | #include <linux/istallion.h> | |
38 | #include <linux/ioport.h> | |
39 | #include <linux/delay.h> | |
40 | #include <linux/init.h> | |
1da177e4 LT |
41 | #include <linux/device.h> |
42 | #include <linux/wait.h> | |
4ac4360b | 43 | #include <linux/eisa.h> |
1da177e4 LT |
44 | |
45 | #include <asm/io.h> | |
46 | #include <asm/uaccess.h> | |
47 | ||
1da177e4 | 48 | #include <linux/pci.h> |
1da177e4 LT |
49 | |
50 | /*****************************************************************************/ | |
51 | ||
52 | /* | |
53 | * Define different board types. Not all of the following board types | |
54 | * are supported by this driver. But I will use the standard "assigned" | |
55 | * board numbers. Currently supported boards are abbreviated as: | |
56 | * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and | |
57 | * STAL = Stallion. | |
58 | */ | |
59 | #define BRD_UNKNOWN 0 | |
60 | #define BRD_STALLION 1 | |
61 | #define BRD_BRUMBY4 2 | |
62 | #define BRD_ONBOARD2 3 | |
63 | #define BRD_ONBOARD 4 | |
64 | #define BRD_BRUMBY8 5 | |
65 | #define BRD_BRUMBY16 6 | |
66 | #define BRD_ONBOARDE 7 | |
67 | #define BRD_ONBOARD32 9 | |
68 | #define BRD_ONBOARD2_32 10 | |
69 | #define BRD_ONBOARDRS 11 | |
70 | #define BRD_EASYIO 20 | |
71 | #define BRD_ECH 21 | |
72 | #define BRD_ECHMC 22 | |
73 | #define BRD_ECP 23 | |
74 | #define BRD_ECPE 24 | |
75 | #define BRD_ECPMC 25 | |
76 | #define BRD_ECHPCI 26 | |
77 | #define BRD_ECH64PCI 27 | |
78 | #define BRD_EASYIOPCI 28 | |
79 | #define BRD_ECPPCI 29 | |
80 | ||
81 | #define BRD_BRUMBY BRD_BRUMBY4 | |
82 | ||
83 | /* | |
84 | * Define a configuration structure to hold the board configuration. | |
85 | * Need to set this up in the code (for now) with the boards that are | |
86 | * to be configured into the system. This is what needs to be modified | |
87 | * when adding/removing/modifying boards. Each line entry in the | |
88 | * stli_brdconf[] array is a board. Each line contains io/irq/memory | |
89 | * ranges for that board (as well as what type of board it is). | |
90 | * Some examples: | |
91 | * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, | |
92 | * This line will configure an EasyConnection 8/64 at io address 2a0, | |
93 | * and shared memory address of cc000. Multiple EasyConnection 8/64 | |
94 | * boards can share the same shared memory address space. No interrupt | |
95 | * is required for this board type. | |
96 | * Another example: | |
97 | * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, | |
98 | * This line will configure an EasyConnection 8/64 EISA in slot 5 and | |
99 | * shared memory address of 0x80000000 (2 GByte). Multiple | |
100 | * EasyConnection 8/64 EISA boards can share the same shared memory | |
101 | * address space. No interrupt is required for this board type. | |
102 | * Another example: | |
103 | * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, | |
104 | * This line will configure an ONboard (ISA type) at io address 240, | |
105 | * and shared memory address of d0000. Multiple ONboards can share | |
106 | * the same shared memory address space. No interrupt required. | |
107 | * Another example: | |
108 | * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, | |
109 | * This line will configure a Brumby board (any number of ports!) at | |
110 | * io address 360 and shared memory address of c8000. All Brumby boards | |
111 | * configured into a system must have their own separate io and memory | |
112 | * addresses. No interrupt is required. | |
113 | * Another example: | |
114 | * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, | |
115 | * This line will configure an original Stallion board at io address 330 | |
116 | * and shared memory address d0000 (this would only be valid for a "V4.0" | |
117 | * or Rev.O Stallion board). All Stallion boards configured into the | |
118 | * system must have their own separate io and memory addresses. No | |
119 | * interrupt is required. | |
120 | */ | |
121 | ||
122 | typedef struct { | |
123 | int brdtype; | |
124 | int ioaddr1; | |
125 | int ioaddr2; | |
126 | unsigned long memaddr; | |
127 | int irq; | |
128 | int irqtype; | |
129 | } stlconf_t; | |
130 | ||
131 | static stlconf_t stli_brdconf[] = { | |
132 | /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/ | |
133 | }; | |
134 | ||
fe971071 | 135 | static int stli_nrbrds = ARRAY_SIZE(stli_brdconf); |
1da177e4 | 136 | |
4ac4360b AC |
137 | /* stli_lock must NOT be taken holding brd_lock */ |
138 | static spinlock_t stli_lock; /* TTY logic lock */ | |
139 | static spinlock_t brd_lock; /* Board logic lock */ | |
140 | ||
1da177e4 LT |
141 | /* |
142 | * There is some experimental EISA board detection code in this driver. | |
143 | * By default it is disabled, but for those that want to try it out, | |
144 | * then set the define below to be 1. | |
145 | */ | |
146 | #define STLI_EISAPROBE 0 | |
147 | ||
148 | /*****************************************************************************/ | |
149 | ||
150 | /* | |
151 | * Define some important driver characteristics. Device major numbers | |
152 | * allocated as per Linux Device Registry. | |
153 | */ | |
154 | #ifndef STL_SIOMEMMAJOR | |
155 | #define STL_SIOMEMMAJOR 28 | |
156 | #endif | |
157 | #ifndef STL_SERIALMAJOR | |
158 | #define STL_SERIALMAJOR 24 | |
159 | #endif | |
160 | #ifndef STL_CALLOUTMAJOR | |
161 | #define STL_CALLOUTMAJOR 25 | |
162 | #endif | |
163 | ||
164 | /*****************************************************************************/ | |
165 | ||
166 | /* | |
167 | * Define our local driver identity first. Set up stuff to deal with | |
168 | * all the local structures required by a serial tty driver. | |
169 | */ | |
170 | static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; | |
171 | static char *stli_drvname = "istallion"; | |
172 | static char *stli_drvversion = "5.6.0"; | |
173 | static char *stli_serialname = "ttyE"; | |
174 | ||
175 | static struct tty_driver *stli_serial; | |
176 | ||
1da177e4 LT |
177 | |
178 | #define STLI_TXBUFSIZE 4096 | |
179 | ||
180 | /* | |
181 | * Use a fast local buffer for cooked characters. Typically a whole | |
182 | * bunch of cooked characters come in for a port, 1 at a time. So we | |
183 | * save those up into a local buffer, then write out the whole lot | |
184 | * with a large memcpy. Just use 1 buffer for all ports, since its | |
185 | * use it is only need for short periods of time by each port. | |
186 | */ | |
187 | static char *stli_txcookbuf; | |
188 | static int stli_txcooksize; | |
189 | static int stli_txcookrealsize; | |
190 | static struct tty_struct *stli_txcooktty; | |
191 | ||
192 | /* | |
193 | * Define a local default termios struct. All ports will be created | |
194 | * with this termios initially. Basically all it defines is a raw port | |
195 | * at 9600 baud, 8 data bits, no parity, 1 stop bit. | |
196 | */ | |
197 | static struct termios stli_deftermios = { | |
198 | .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), | |
199 | .c_cc = INIT_C_CC, | |
200 | }; | |
201 | ||
202 | /* | |
203 | * Define global stats structures. Not used often, and can be | |
204 | * re-used for each stats call. | |
205 | */ | |
206 | static comstats_t stli_comstats; | |
207 | static combrd_t stli_brdstats; | |
208 | static asystats_t stli_cdkstats; | |
209 | static stlibrd_t stli_dummybrd; | |
210 | static stliport_t stli_dummyport; | |
211 | ||
212 | /*****************************************************************************/ | |
213 | ||
214 | static stlibrd_t *stli_brds[STL_MAXBRDS]; | |
215 | ||
216 | static int stli_shared; | |
217 | ||
218 | /* | |
219 | * Per board state flags. Used with the state field of the board struct. | |
220 | * Not really much here... All we need to do is keep track of whether | |
221 | * the board has been detected, and whether it is actually running a slave | |
222 | * or not. | |
223 | */ | |
224 | #define BST_FOUND 0x1 | |
225 | #define BST_STARTED 0x2 | |
226 | ||
227 | /* | |
228 | * Define the set of port state flags. These are marked for internal | |
229 | * state purposes only, usually to do with the state of communications | |
230 | * with the slave. Most of them need to be updated atomically, so always | |
231 | * use the bit setting operations (unless protected by cli/sti). | |
232 | */ | |
233 | #define ST_INITIALIZING 1 | |
234 | #define ST_OPENING 2 | |
235 | #define ST_CLOSING 3 | |
236 | #define ST_CMDING 4 | |
237 | #define ST_TXBUSY 5 | |
238 | #define ST_RXING 6 | |
239 | #define ST_DOFLUSHRX 7 | |
240 | #define ST_DOFLUSHTX 8 | |
241 | #define ST_DOSIGS 9 | |
242 | #define ST_RXSTOP 10 | |
243 | #define ST_GETSIGS 11 | |
244 | ||
245 | /* | |
246 | * Define an array of board names as printable strings. Handy for | |
247 | * referencing boards when printing trace and stuff. | |
248 | */ | |
249 | static char *stli_brdnames[] = { | |
250 | "Unknown", | |
251 | "Stallion", | |
252 | "Brumby", | |
253 | "ONboard-MC", | |
254 | "ONboard", | |
255 | "Brumby", | |
256 | "Brumby", | |
257 | "ONboard-EI", | |
258 | (char *) NULL, | |
259 | "ONboard", | |
260 | "ONboard-MC", | |
261 | "ONboard-MC", | |
262 | (char *) NULL, | |
263 | (char *) NULL, | |
264 | (char *) NULL, | |
265 | (char *) NULL, | |
266 | (char *) NULL, | |
267 | (char *) NULL, | |
268 | (char *) NULL, | |
269 | (char *) NULL, | |
270 | "EasyIO", | |
271 | "EC8/32-AT", | |
272 | "EC8/32-MC", | |
273 | "EC8/64-AT", | |
274 | "EC8/64-EI", | |
275 | "EC8/64-MC", | |
276 | "EC8/32-PCI", | |
277 | "EC8/64-PCI", | |
278 | "EasyIO-PCI", | |
279 | "EC/RA-PCI", | |
280 | }; | |
281 | ||
282 | /*****************************************************************************/ | |
283 | ||
1da177e4 LT |
284 | /* |
285 | * Define some string labels for arguments passed from the module | |
286 | * load line. These allow for easy board definitions, and easy | |
287 | * modification of the io, memory and irq resoucres. | |
288 | */ | |
289 | ||
290 | static char *board0[8]; | |
291 | static char *board1[8]; | |
292 | static char *board2[8]; | |
293 | static char *board3[8]; | |
294 | ||
295 | static char **stli_brdsp[] = { | |
296 | (char **) &board0, | |
297 | (char **) &board1, | |
298 | (char **) &board2, | |
299 | (char **) &board3 | |
300 | }; | |
301 | ||
302 | /* | |
303 | * Define a set of common board names, and types. This is used to | |
304 | * parse any module arguments. | |
305 | */ | |
306 | ||
307 | typedef struct stlibrdtype { | |
308 | char *name; | |
309 | int type; | |
310 | } stlibrdtype_t; | |
311 | ||
312 | static stlibrdtype_t stli_brdstr[] = { | |
313 | { "stallion", BRD_STALLION }, | |
314 | { "1", BRD_STALLION }, | |
315 | { "brumby", BRD_BRUMBY }, | |
316 | { "brumby4", BRD_BRUMBY }, | |
317 | { "brumby/4", BRD_BRUMBY }, | |
318 | { "brumby-4", BRD_BRUMBY }, | |
319 | { "brumby8", BRD_BRUMBY }, | |
320 | { "brumby/8", BRD_BRUMBY }, | |
321 | { "brumby-8", BRD_BRUMBY }, | |
322 | { "brumby16", BRD_BRUMBY }, | |
323 | { "brumby/16", BRD_BRUMBY }, | |
324 | { "brumby-16", BRD_BRUMBY }, | |
325 | { "2", BRD_BRUMBY }, | |
326 | { "onboard2", BRD_ONBOARD2 }, | |
327 | { "onboard-2", BRD_ONBOARD2 }, | |
328 | { "onboard/2", BRD_ONBOARD2 }, | |
329 | { "onboard-mc", BRD_ONBOARD2 }, | |
330 | { "onboard/mc", BRD_ONBOARD2 }, | |
331 | { "onboard-mca", BRD_ONBOARD2 }, | |
332 | { "onboard/mca", BRD_ONBOARD2 }, | |
333 | { "3", BRD_ONBOARD2 }, | |
334 | { "onboard", BRD_ONBOARD }, | |
335 | { "onboardat", BRD_ONBOARD }, | |
336 | { "4", BRD_ONBOARD }, | |
337 | { "onboarde", BRD_ONBOARDE }, | |
338 | { "onboard-e", BRD_ONBOARDE }, | |
339 | { "onboard/e", BRD_ONBOARDE }, | |
340 | { "onboard-ei", BRD_ONBOARDE }, | |
341 | { "onboard/ei", BRD_ONBOARDE }, | |
342 | { "7", BRD_ONBOARDE }, | |
343 | { "ecp", BRD_ECP }, | |
344 | { "ecpat", BRD_ECP }, | |
345 | { "ec8/64", BRD_ECP }, | |
346 | { "ec8/64-at", BRD_ECP }, | |
347 | { "ec8/64-isa", BRD_ECP }, | |
348 | { "23", BRD_ECP }, | |
349 | { "ecpe", BRD_ECPE }, | |
350 | { "ecpei", BRD_ECPE }, | |
351 | { "ec8/64-e", BRD_ECPE }, | |
352 | { "ec8/64-ei", BRD_ECPE }, | |
353 | { "24", BRD_ECPE }, | |
354 | { "ecpmc", BRD_ECPMC }, | |
355 | { "ec8/64-mc", BRD_ECPMC }, | |
356 | { "ec8/64-mca", BRD_ECPMC }, | |
357 | { "25", BRD_ECPMC }, | |
358 | { "ecppci", BRD_ECPPCI }, | |
359 | { "ec/ra", BRD_ECPPCI }, | |
360 | { "ec/ra-pc", BRD_ECPPCI }, | |
361 | { "ec/ra-pci", BRD_ECPPCI }, | |
362 | { "29", BRD_ECPPCI }, | |
363 | }; | |
364 | ||
365 | /* | |
366 | * Define the module agruments. | |
367 | */ | |
368 | MODULE_AUTHOR("Greg Ungerer"); | |
369 | MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); | |
370 | MODULE_LICENSE("GPL"); | |
371 | ||
372 | ||
8d3b33f6 | 373 | module_param_array(board0, charp, NULL, 0); |
1da177e4 | 374 | MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 375 | module_param_array(board1, charp, NULL, 0); |
1da177e4 | 376 | MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 377 | module_param_array(board2, charp, NULL, 0); |
1da177e4 | 378 | MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 379 | module_param_array(board3, charp, NULL, 0); |
1da177e4 LT |
380 | MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); |
381 | ||
1da177e4 LT |
382 | /* |
383 | * Set up a default memory address table for EISA board probing. | |
384 | * The default addresses are all bellow 1Mbyte, which has to be the | |
385 | * case anyway. They should be safe, since we only read values from | |
386 | * them, and interrupts are disabled while we do it. If the higher | |
387 | * memory support is compiled in then we also try probing around | |
388 | * the 1Gb, 2Gb and 3Gb areas as well... | |
389 | */ | |
390 | static unsigned long stli_eisamemprobeaddrs[] = { | |
391 | 0xc0000, 0xd0000, 0xe0000, 0xf0000, | |
392 | 0x80000000, 0x80010000, 0x80020000, 0x80030000, | |
393 | 0x40000000, 0x40010000, 0x40020000, 0x40030000, | |
394 | 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, | |
395 | 0xff000000, 0xff010000, 0xff020000, 0xff030000, | |
396 | }; | |
397 | ||
fe971071 | 398 | static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs); |
1da177e4 LT |
399 | |
400 | /* | |
401 | * Define the Stallion PCI vendor and device IDs. | |
402 | */ | |
403 | #ifdef CONFIG_PCI | |
404 | #ifndef PCI_VENDOR_ID_STALLION | |
405 | #define PCI_VENDOR_ID_STALLION 0x124d | |
406 | #endif | |
407 | #ifndef PCI_DEVICE_ID_ECRA | |
408 | #define PCI_DEVICE_ID_ECRA 0x0004 | |
409 | #endif | |
410 | ||
411 | static struct pci_device_id istallion_pci_tbl[] = { | |
4ac4360b | 412 | { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), }, |
1da177e4 LT |
413 | { 0 } |
414 | }; | |
415 | MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); | |
416 | ||
417 | #endif /* CONFIG_PCI */ | |
418 | ||
419 | /*****************************************************************************/ | |
420 | ||
421 | /* | |
422 | * Hardware configuration info for ECP boards. These defines apply | |
423 | * to the directly accessible io ports of the ECP. There is a set of | |
424 | * defines for each ECP board type, ISA, EISA, MCA and PCI. | |
425 | */ | |
426 | #define ECP_IOSIZE 4 | |
427 | ||
428 | #define ECP_MEMSIZE (128 * 1024) | |
429 | #define ECP_PCIMEMSIZE (256 * 1024) | |
430 | ||
431 | #define ECP_ATPAGESIZE (4 * 1024) | |
432 | #define ECP_MCPAGESIZE (4 * 1024) | |
433 | #define ECP_EIPAGESIZE (64 * 1024) | |
434 | #define ECP_PCIPAGESIZE (64 * 1024) | |
435 | ||
436 | #define STL_EISAID 0x8c4e | |
437 | ||
438 | /* | |
439 | * Important defines for the ISA class of ECP board. | |
440 | */ | |
441 | #define ECP_ATIREG 0 | |
442 | #define ECP_ATCONFR 1 | |
443 | #define ECP_ATMEMAR 2 | |
444 | #define ECP_ATMEMPR 3 | |
445 | #define ECP_ATSTOP 0x1 | |
446 | #define ECP_ATINTENAB 0x10 | |
447 | #define ECP_ATENABLE 0x20 | |
448 | #define ECP_ATDISABLE 0x00 | |
449 | #define ECP_ATADDRMASK 0x3f000 | |
450 | #define ECP_ATADDRSHFT 12 | |
451 | ||
452 | /* | |
453 | * Important defines for the EISA class of ECP board. | |
454 | */ | |
455 | #define ECP_EIIREG 0 | |
456 | #define ECP_EIMEMARL 1 | |
457 | #define ECP_EICONFR 2 | |
458 | #define ECP_EIMEMARH 3 | |
459 | #define ECP_EIENABLE 0x1 | |
460 | #define ECP_EIDISABLE 0x0 | |
461 | #define ECP_EISTOP 0x4 | |
462 | #define ECP_EIEDGE 0x00 | |
463 | #define ECP_EILEVEL 0x80 | |
464 | #define ECP_EIADDRMASKL 0x00ff0000 | |
465 | #define ECP_EIADDRSHFTL 16 | |
466 | #define ECP_EIADDRMASKH 0xff000000 | |
467 | #define ECP_EIADDRSHFTH 24 | |
468 | #define ECP_EIBRDENAB 0xc84 | |
469 | ||
470 | #define ECP_EISAID 0x4 | |
471 | ||
472 | /* | |
473 | * Important defines for the Micro-channel class of ECP board. | |
474 | * (It has a lot in common with the ISA boards.) | |
475 | */ | |
476 | #define ECP_MCIREG 0 | |
477 | #define ECP_MCCONFR 1 | |
478 | #define ECP_MCSTOP 0x20 | |
479 | #define ECP_MCENABLE 0x80 | |
480 | #define ECP_MCDISABLE 0x00 | |
481 | ||
482 | /* | |
483 | * Important defines for the PCI class of ECP board. | |
484 | * (It has a lot in common with the other ECP boards.) | |
485 | */ | |
486 | #define ECP_PCIIREG 0 | |
487 | #define ECP_PCICONFR 1 | |
488 | #define ECP_PCISTOP 0x01 | |
489 | ||
490 | /* | |
491 | * Hardware configuration info for ONboard and Brumby boards. These | |
492 | * defines apply to the directly accessible io ports of these boards. | |
493 | */ | |
494 | #define ONB_IOSIZE 16 | |
495 | #define ONB_MEMSIZE (64 * 1024) | |
496 | #define ONB_ATPAGESIZE (64 * 1024) | |
497 | #define ONB_MCPAGESIZE (64 * 1024) | |
498 | #define ONB_EIMEMSIZE (128 * 1024) | |
499 | #define ONB_EIPAGESIZE (64 * 1024) | |
500 | ||
501 | /* | |
502 | * Important defines for the ISA class of ONboard board. | |
503 | */ | |
504 | #define ONB_ATIREG 0 | |
505 | #define ONB_ATMEMAR 1 | |
506 | #define ONB_ATCONFR 2 | |
507 | #define ONB_ATSTOP 0x4 | |
508 | #define ONB_ATENABLE 0x01 | |
509 | #define ONB_ATDISABLE 0x00 | |
510 | #define ONB_ATADDRMASK 0xff0000 | |
511 | #define ONB_ATADDRSHFT 16 | |
512 | ||
513 | #define ONB_MEMENABLO 0 | |
514 | #define ONB_MEMENABHI 0x02 | |
515 | ||
516 | /* | |
517 | * Important defines for the EISA class of ONboard board. | |
518 | */ | |
519 | #define ONB_EIIREG 0 | |
520 | #define ONB_EIMEMARL 1 | |
521 | #define ONB_EICONFR 2 | |
522 | #define ONB_EIMEMARH 3 | |
523 | #define ONB_EIENABLE 0x1 | |
524 | #define ONB_EIDISABLE 0x0 | |
525 | #define ONB_EISTOP 0x4 | |
526 | #define ONB_EIEDGE 0x00 | |
527 | #define ONB_EILEVEL 0x80 | |
528 | #define ONB_EIADDRMASKL 0x00ff0000 | |
529 | #define ONB_EIADDRSHFTL 16 | |
530 | #define ONB_EIADDRMASKH 0xff000000 | |
531 | #define ONB_EIADDRSHFTH 24 | |
532 | #define ONB_EIBRDENAB 0xc84 | |
533 | ||
534 | #define ONB_EISAID 0x1 | |
535 | ||
536 | /* | |
537 | * Important defines for the Brumby boards. They are pretty simple, | |
538 | * there is not much that is programmably configurable. | |
539 | */ | |
540 | #define BBY_IOSIZE 16 | |
541 | #define BBY_MEMSIZE (64 * 1024) | |
542 | #define BBY_PAGESIZE (16 * 1024) | |
543 | ||
544 | #define BBY_ATIREG 0 | |
545 | #define BBY_ATCONFR 1 | |
546 | #define BBY_ATSTOP 0x4 | |
547 | ||
548 | /* | |
549 | * Important defines for the Stallion boards. They are pretty simple, | |
550 | * there is not much that is programmably configurable. | |
551 | */ | |
552 | #define STAL_IOSIZE 16 | |
553 | #define STAL_MEMSIZE (64 * 1024) | |
554 | #define STAL_PAGESIZE (64 * 1024) | |
555 | ||
556 | /* | |
557 | * Define the set of status register values for EasyConnection panels. | |
558 | * The signature will return with the status value for each panel. From | |
559 | * this we can determine what is attached to the board - before we have | |
560 | * actually down loaded any code to it. | |
561 | */ | |
562 | #define ECH_PNLSTATUS 2 | |
563 | #define ECH_PNL16PORT 0x20 | |
564 | #define ECH_PNLIDMASK 0x07 | |
565 | #define ECH_PNLXPID 0x40 | |
566 | #define ECH_PNLINTRPEND 0x80 | |
567 | ||
568 | /* | |
569 | * Define some macros to do things to the board. Even those these boards | |
570 | * are somewhat related there is often significantly different ways of | |
571 | * doing some operation on it (like enable, paging, reset, etc). So each | |
572 | * board class has a set of functions which do the commonly required | |
573 | * operations. The macros below basically just call these functions, | |
574 | * generally checking for a NULL function - which means that the board | |
575 | * needs nothing done to it to achieve this operation! | |
576 | */ | |
577 | #define EBRDINIT(brdp) \ | |
578 | if (brdp->init != NULL) \ | |
579 | (* brdp->init)(brdp) | |
580 | ||
581 | #define EBRDENABLE(brdp) \ | |
582 | if (brdp->enable != NULL) \ | |
583 | (* brdp->enable)(brdp); | |
584 | ||
585 | #define EBRDDISABLE(brdp) \ | |
586 | if (brdp->disable != NULL) \ | |
587 | (* brdp->disable)(brdp); | |
588 | ||
589 | #define EBRDINTR(brdp) \ | |
590 | if (brdp->intr != NULL) \ | |
591 | (* brdp->intr)(brdp); | |
592 | ||
593 | #define EBRDRESET(brdp) \ | |
594 | if (brdp->reset != NULL) \ | |
595 | (* brdp->reset)(brdp); | |
596 | ||
597 | #define EBRDGETMEMPTR(brdp,offset) \ | |
598 | (* brdp->getmemptr)(brdp, offset, __LINE__) | |
599 | ||
600 | /* | |
601 | * Define the maximal baud rate, and the default baud base for ports. | |
602 | */ | |
603 | #define STL_MAXBAUD 460800 | |
604 | #define STL_BAUDBASE 115200 | |
605 | #define STL_CLOSEDELAY (5 * HZ / 10) | |
606 | ||
607 | /*****************************************************************************/ | |
608 | ||
609 | /* | |
610 | * Define macros to extract a brd or port number from a minor number. | |
611 | */ | |
612 | #define MINOR2BRD(min) (((min) & 0xc0) >> 6) | |
613 | #define MINOR2PORT(min) ((min) & 0x3f) | |
614 | ||
1da177e4 LT |
615 | /*****************************************************************************/ |
616 | ||
617 | /* | |
618 | * Define some handy local macros... | |
619 | */ | |
620 | #undef MIN | |
621 | #define MIN(a,b) (((a) <= (b)) ? (a) : (b)) | |
622 | ||
623 | #undef TOLOWER | |
624 | #define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x)) | |
625 | ||
626 | /*****************************************************************************/ | |
627 | ||
628 | /* | |
629 | * Prototype all functions in this driver! | |
630 | */ | |
631 | ||
1da177e4 | 632 | static int stli_parsebrd(stlconf_t *confp, char **argp); |
672b2714 | 633 | static int stli_init(void); |
1da177e4 LT |
634 | static int stli_open(struct tty_struct *tty, struct file *filp); |
635 | static void stli_close(struct tty_struct *tty, struct file *filp); | |
636 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); | |
637 | static void stli_putchar(struct tty_struct *tty, unsigned char ch); | |
638 | static void stli_flushchars(struct tty_struct *tty); | |
639 | static int stli_writeroom(struct tty_struct *tty); | |
640 | static int stli_charsinbuffer(struct tty_struct *tty); | |
641 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); | |
642 | static void stli_settermios(struct tty_struct *tty, struct termios *old); | |
643 | static void stli_throttle(struct tty_struct *tty); | |
644 | static void stli_unthrottle(struct tty_struct *tty); | |
645 | static void stli_stop(struct tty_struct *tty); | |
646 | static void stli_start(struct tty_struct *tty); | |
647 | static void stli_flushbuffer(struct tty_struct *tty); | |
648 | static void stli_breakctl(struct tty_struct *tty, int state); | |
649 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); | |
650 | static void stli_sendxchar(struct tty_struct *tty, char ch); | |
651 | static void stli_hangup(struct tty_struct *tty); | |
652 | static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos); | |
653 | ||
654 | static int stli_brdinit(stlibrd_t *brdp); | |
655 | static int stli_startbrd(stlibrd_t *brdp); | |
656 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); | |
657 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); | |
658 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); | |
4ac4360b | 659 | static void stli_brdpoll(stlibrd_t *brdp, cdkhdr_t __iomem *hdrp); |
1da177e4 LT |
660 | static void stli_poll(unsigned long arg); |
661 | static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp); | |
662 | static int stli_initopen(stlibrd_t *brdp, stliport_t *portp); | |
663 | static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait); | |
664 | static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait); | |
665 | static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp); | |
666 | static void stli_dohangup(void *arg); | |
667 | static int stli_setport(stliport_t *portp); | |
668 | static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); | |
669 | static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); | |
4ac4360b AC |
670 | static void __stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback); |
671 | static void stli_dodelaycmd(stliport_t *portp, cdkctrl_t __iomem *cp); | |
1da177e4 LT |
672 | static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp); |
673 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); | |
674 | static long stli_mktiocm(unsigned long sigvalue); | |
675 | static void stli_read(stlibrd_t *brdp, stliport_t *portp); | |
676 | static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp); | |
677 | static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp); | |
678 | static int stli_getbrdstats(combrd_t __user *bp); | |
679 | static int stli_getportstats(stliport_t *portp, comstats_t __user *cp); | |
680 | static int stli_portcmdstats(stliport_t *portp); | |
681 | static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp); | |
682 | static int stli_getportstruct(stliport_t __user *arg); | |
683 | static int stli_getbrdstruct(stlibrd_t __user *arg); | |
1da177e4 LT |
684 | static stlibrd_t *stli_allocbrd(void); |
685 | ||
686 | static void stli_ecpinit(stlibrd_t *brdp); | |
687 | static void stli_ecpenable(stlibrd_t *brdp); | |
688 | static void stli_ecpdisable(stlibrd_t *brdp); | |
689 | static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
690 | static void stli_ecpreset(stlibrd_t *brdp); | |
691 | static void stli_ecpintr(stlibrd_t *brdp); | |
692 | static void stli_ecpeiinit(stlibrd_t *brdp); | |
693 | static void stli_ecpeienable(stlibrd_t *brdp); | |
694 | static void stli_ecpeidisable(stlibrd_t *brdp); | |
695 | static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
696 | static void stli_ecpeireset(stlibrd_t *brdp); | |
697 | static void stli_ecpmcenable(stlibrd_t *brdp); | |
698 | static void stli_ecpmcdisable(stlibrd_t *brdp); | |
699 | static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
700 | static void stli_ecpmcreset(stlibrd_t *brdp); | |
701 | static void stli_ecppciinit(stlibrd_t *brdp); | |
702 | static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
703 | static void stli_ecppcireset(stlibrd_t *brdp); | |
704 | ||
705 | static void stli_onbinit(stlibrd_t *brdp); | |
706 | static void stli_onbenable(stlibrd_t *brdp); | |
707 | static void stli_onbdisable(stlibrd_t *brdp); | |
708 | static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
709 | static void stli_onbreset(stlibrd_t *brdp); | |
710 | static void stli_onbeinit(stlibrd_t *brdp); | |
711 | static void stli_onbeenable(stlibrd_t *brdp); | |
712 | static void stli_onbedisable(stlibrd_t *brdp); | |
713 | static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
714 | static void stli_onbereset(stlibrd_t *brdp); | |
715 | static void stli_bbyinit(stlibrd_t *brdp); | |
716 | static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
717 | static void stli_bbyreset(stlibrd_t *brdp); | |
718 | static void stli_stalinit(stlibrd_t *brdp); | |
719 | static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line); | |
720 | static void stli_stalreset(stlibrd_t *brdp); | |
721 | ||
722 | static stliport_t *stli_getport(int brdnr, int panelnr, int portnr); | |
723 | ||
724 | static int stli_initecp(stlibrd_t *brdp); | |
725 | static int stli_initonb(stlibrd_t *brdp); | |
726 | static int stli_eisamemprobe(stlibrd_t *brdp); | |
727 | static int stli_initports(stlibrd_t *brdp); | |
728 | ||
729 | #ifdef CONFIG_PCI | |
730 | static int stli_initpcibrd(int brdtype, struct pci_dev *devp); | |
731 | #endif | |
732 | ||
733 | /*****************************************************************************/ | |
734 | ||
735 | /* | |
736 | * Define the driver info for a user level shared memory device. This | |
737 | * device will work sort of like the /dev/kmem device - except that it | |
738 | * will give access to the shared memory on the Stallion intelligent | |
739 | * board. This is also a very useful debugging tool. | |
740 | */ | |
62322d25 | 741 | static const struct file_operations stli_fsiomem = { |
1da177e4 LT |
742 | .owner = THIS_MODULE, |
743 | .read = stli_memread, | |
744 | .write = stli_memwrite, | |
745 | .ioctl = stli_memioctl, | |
746 | }; | |
747 | ||
748 | /*****************************************************************************/ | |
749 | ||
750 | /* | |
751 | * Define a timer_list entry for our poll routine. The slave board | |
752 | * is polled every so often to see if anything needs doing. This is | |
753 | * much cheaper on host cpu than using interrupts. It turns out to | |
754 | * not increase character latency by much either... | |
755 | */ | |
8d06afab | 756 | static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); |
1da177e4 LT |
757 | |
758 | static int stli_timeron; | |
759 | ||
760 | /* | |
761 | * Define the calculation for the timeout routine. | |
762 | */ | |
763 | #define STLI_TIMEOUT (jiffies + 1) | |
764 | ||
765 | /*****************************************************************************/ | |
766 | ||
ca8eca68 | 767 | static struct class *istallion_class; |
1da177e4 | 768 | |
1da177e4 LT |
769 | /* |
770 | * Loadable module initialization stuff. | |
771 | */ | |
772 | ||
773 | static int __init istallion_module_init(void) | |
774 | { | |
1da177e4 | 775 | stli_init(); |
4ac4360b | 776 | return 0; |
1da177e4 LT |
777 | } |
778 | ||
779 | /*****************************************************************************/ | |
780 | ||
781 | static void __exit istallion_module_exit(void) | |
782 | { | |
783 | stlibrd_t *brdp; | |
784 | stliport_t *portp; | |
1da177e4 LT |
785 | int i, j; |
786 | ||
1da177e4 LT |
787 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, |
788 | stli_drvversion); | |
789 | ||
4ac4360b AC |
790 | /* |
791 | * Free up all allocated resources used by the ports. This includes | |
792 | * memory and interrupts. | |
793 | */ | |
1da177e4 LT |
794 | if (stli_timeron) { |
795 | stli_timeron = 0; | |
4ac4360b | 796 | del_timer_sync(&stli_timerlist); |
1da177e4 LT |
797 | } |
798 | ||
799 | i = tty_unregister_driver(stli_serial); | |
800 | if (i) { | |
801 | printk("STALLION: failed to un-register tty driver, " | |
802 | "errno=%d\n", -i); | |
1da177e4 LT |
803 | return; |
804 | } | |
805 | put_tty_driver(stli_serial); | |
8ab5e4c1 | 806 | for (i = 0; i < 4; i++) |
ca8eca68 | 807 | class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, i)); |
ca8eca68 | 808 | class_destroy(istallion_class); |
1da177e4 LT |
809 | if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) |
810 | printk("STALLION: failed to un-register serial memory device, " | |
811 | "errno=%d\n", -i); | |
735d5661 | 812 | |
735d5661 | 813 | kfree(stli_txcookbuf); |
1da177e4 LT |
814 | |
815 | for (i = 0; (i < stli_nrbrds); i++) { | |
4ac4360b | 816 | if ((brdp = stli_brds[i]) == NULL) |
1da177e4 LT |
817 | continue; |
818 | for (j = 0; (j < STL_MAXPORTS); j++) { | |
819 | portp = brdp->ports[j]; | |
4ac4360b AC |
820 | if (portp != NULL) { |
821 | if (portp->tty != NULL) | |
1da177e4 LT |
822 | tty_hangup(portp->tty); |
823 | kfree(portp); | |
824 | } | |
825 | } | |
826 | ||
827 | iounmap(brdp->membase); | |
828 | if (brdp->iosize > 0) | |
829 | release_region(brdp->iobase, brdp->iosize); | |
830 | kfree(brdp); | |
4ac4360b | 831 | stli_brds[i] = NULL; |
1da177e4 | 832 | } |
1da177e4 LT |
833 | } |
834 | ||
835 | module_init(istallion_module_init); | |
836 | module_exit(istallion_module_exit); | |
837 | ||
838 | /*****************************************************************************/ | |
839 | ||
840 | /* | |
841 | * Check for any arguments passed in on the module load command line. | |
842 | */ | |
843 | ||
844 | static void stli_argbrds(void) | |
845 | { | |
4ac4360b AC |
846 | stlconf_t conf; |
847 | stlibrd_t *brdp; | |
848 | int i; | |
1da177e4 | 849 | |
fe971071 | 850 | for (i = stli_nrbrds; i < ARRAY_SIZE(stli_brdsp); i++) { |
1da177e4 LT |
851 | memset(&conf, 0, sizeof(conf)); |
852 | if (stli_parsebrd(&conf, stli_brdsp[i]) == 0) | |
853 | continue; | |
4ac4360b | 854 | if ((brdp = stli_allocbrd()) == NULL) |
1da177e4 LT |
855 | continue; |
856 | stli_nrbrds = i + 1; | |
857 | brdp->brdnr = i; | |
858 | brdp->brdtype = conf.brdtype; | |
859 | brdp->iobase = conf.ioaddr1; | |
860 | brdp->memaddr = conf.memaddr; | |
861 | stli_brdinit(brdp); | |
862 | } | |
863 | } | |
864 | ||
865 | /*****************************************************************************/ | |
866 | ||
867 | /* | |
868 | * Convert an ascii string number into an unsigned long. | |
869 | */ | |
870 | ||
871 | static unsigned long stli_atol(char *str) | |
872 | { | |
4ac4360b AC |
873 | unsigned long val; |
874 | int base, c; | |
875 | char *sp; | |
1da177e4 LT |
876 | |
877 | val = 0; | |
878 | sp = str; | |
879 | if ((*sp == '0') && (*(sp+1) == 'x')) { | |
880 | base = 16; | |
881 | sp += 2; | |
882 | } else if (*sp == '0') { | |
883 | base = 8; | |
884 | sp++; | |
885 | } else { | |
886 | base = 10; | |
887 | } | |
888 | ||
889 | for (; (*sp != 0); sp++) { | |
890 | c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0'); | |
891 | if ((c < 0) || (c >= base)) { | |
892 | printk("STALLION: invalid argument %s\n", str); | |
893 | val = 0; | |
894 | break; | |
895 | } | |
896 | val = (val * base) + c; | |
897 | } | |
898 | return(val); | |
899 | } | |
900 | ||
901 | /*****************************************************************************/ | |
902 | ||
903 | /* | |
904 | * Parse the supplied argument string, into the board conf struct. | |
905 | */ | |
906 | ||
907 | static int stli_parsebrd(stlconf_t *confp, char **argp) | |
908 | { | |
4ac4360b AC |
909 | char *sp; |
910 | int i; | |
1da177e4 | 911 | |
4ac4360b AC |
912 | if (argp[0] == NULL || *argp[0] == 0) |
913 | return 0; | |
1da177e4 LT |
914 | |
915 | for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) | |
916 | *sp = TOLOWER(*sp); | |
917 | ||
fe971071 | 918 | for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) { |
1da177e4 LT |
919 | if (strcmp(stli_brdstr[i].name, argp[0]) == 0) |
920 | break; | |
921 | } | |
fe971071 | 922 | if (i == ARRAY_SIZE(stli_brdstr)) { |
1da177e4 | 923 | printk("STALLION: unknown board name, %s?\n", argp[0]); |
fe971071 | 924 | return 0; |
1da177e4 LT |
925 | } |
926 | ||
927 | confp->brdtype = stli_brdstr[i].type; | |
4ac4360b | 928 | if (argp[1] != NULL && *argp[1] != 0) |
1da177e4 | 929 | confp->ioaddr1 = stli_atol(argp[1]); |
4ac4360b | 930 | if (argp[2] != NULL && *argp[2] != 0) |
1da177e4 LT |
931 | confp->memaddr = stli_atol(argp[2]); |
932 | return(1); | |
933 | } | |
934 | ||
1da177e4 LT |
935 | /*****************************************************************************/ |
936 | ||
1da177e4 LT |
937 | static int stli_open(struct tty_struct *tty, struct file *filp) |
938 | { | |
4ac4360b AC |
939 | stlibrd_t *brdp; |
940 | stliport_t *portp; | |
941 | unsigned int minordev; | |
942 | int brdnr, portnr, rc; | |
1da177e4 LT |
943 | |
944 | minordev = tty->index; | |
945 | brdnr = MINOR2BRD(minordev); | |
946 | if (brdnr >= stli_nrbrds) | |
4ac4360b | 947 | return -ENODEV; |
1da177e4 | 948 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
949 | if (brdp == NULL) |
950 | return -ENODEV; | |
1da177e4 | 951 | if ((brdp->state & BST_STARTED) == 0) |
4ac4360b | 952 | return -ENODEV; |
1da177e4 LT |
953 | portnr = MINOR2PORT(minordev); |
954 | if ((portnr < 0) || (portnr > brdp->nrports)) | |
4ac4360b | 955 | return -ENODEV; |
1da177e4 LT |
956 | |
957 | portp = brdp->ports[portnr]; | |
4ac4360b AC |
958 | if (portp == NULL) |
959 | return -ENODEV; | |
1da177e4 | 960 | if (portp->devnr < 1) |
4ac4360b | 961 | return -ENODEV; |
1da177e4 LT |
962 | |
963 | ||
964 | /* | |
965 | * Check if this port is in the middle of closing. If so then wait | |
966 | * until it is closed then return error status based on flag settings. | |
967 | * The sleep here does not need interrupt protection since the wakeup | |
968 | * for it is done with the same context. | |
969 | */ | |
970 | if (portp->flags & ASYNC_CLOSING) { | |
971 | interruptible_sleep_on(&portp->close_wait); | |
972 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
4ac4360b AC |
973 | return -EAGAIN; |
974 | return -ERESTARTSYS; | |
1da177e4 LT |
975 | } |
976 | ||
977 | /* | |
978 | * On the first open of the device setup the port hardware, and | |
979 | * initialize the per port data structure. Since initializing the port | |
980 | * requires several commands to the board we will need to wait for any | |
981 | * other open that is already initializing the port. | |
982 | */ | |
983 | portp->tty = tty; | |
984 | tty->driver_data = portp; | |
985 | portp->refcount++; | |
986 | ||
987 | wait_event_interruptible(portp->raw_wait, | |
988 | !test_bit(ST_INITIALIZING, &portp->state)); | |
989 | if (signal_pending(current)) | |
4ac4360b | 990 | return -ERESTARTSYS; |
1da177e4 LT |
991 | |
992 | if ((portp->flags & ASYNC_INITIALIZED) == 0) { | |
993 | set_bit(ST_INITIALIZING, &portp->state); | |
994 | if ((rc = stli_initopen(brdp, portp)) >= 0) { | |
995 | portp->flags |= ASYNC_INITIALIZED; | |
996 | clear_bit(TTY_IO_ERROR, &tty->flags); | |
997 | } | |
998 | clear_bit(ST_INITIALIZING, &portp->state); | |
999 | wake_up_interruptible(&portp->raw_wait); | |
1000 | if (rc < 0) | |
4ac4360b | 1001 | return rc; |
1da177e4 LT |
1002 | } |
1003 | ||
1004 | /* | |
1005 | * Check if this port is in the middle of closing. If so then wait | |
1006 | * until it is closed then return error status, based on flag settings. | |
1007 | * The sleep here does not need interrupt protection since the wakeup | |
1008 | * for it is done with the same context. | |
1009 | */ | |
1010 | if (portp->flags & ASYNC_CLOSING) { | |
1011 | interruptible_sleep_on(&portp->close_wait); | |
1012 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
4ac4360b AC |
1013 | return -EAGAIN; |
1014 | return -ERESTARTSYS; | |
1da177e4 LT |
1015 | } |
1016 | ||
1017 | /* | |
1018 | * Based on type of open being done check if it can overlap with any | |
1019 | * previous opens still in effect. If we are a normal serial device | |
1020 | * then also we might have to wait for carrier. | |
1021 | */ | |
1022 | if (!(filp->f_flags & O_NONBLOCK)) { | |
1023 | if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0) | |
4ac4360b | 1024 | return rc; |
1da177e4 LT |
1025 | } |
1026 | portp->flags |= ASYNC_NORMAL_ACTIVE; | |
4ac4360b | 1027 | return 0; |
1da177e4 LT |
1028 | } |
1029 | ||
1030 | /*****************************************************************************/ | |
1031 | ||
1032 | static void stli_close(struct tty_struct *tty, struct file *filp) | |
1033 | { | |
4ac4360b AC |
1034 | stlibrd_t *brdp; |
1035 | stliport_t *portp; | |
1036 | unsigned long flags; | |
1da177e4 LT |
1037 | |
1038 | portp = tty->driver_data; | |
4ac4360b | 1039 | if (portp == NULL) |
1da177e4 LT |
1040 | return; |
1041 | ||
4ac4360b | 1042 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 | 1043 | if (tty_hung_up_p(filp)) { |
4ac4360b | 1044 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
1045 | return; |
1046 | } | |
1047 | if ((tty->count == 1) && (portp->refcount != 1)) | |
1048 | portp->refcount = 1; | |
1049 | if (portp->refcount-- > 1) { | |
4ac4360b | 1050 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
1051 | return; |
1052 | } | |
1053 | ||
1054 | portp->flags |= ASYNC_CLOSING; | |
1055 | ||
1056 | /* | |
1057 | * May want to wait for data to drain before closing. The BUSY flag | |
1058 | * keeps track of whether we are still transmitting or not. It is | |
1059 | * updated by messages from the slave - indicating when all chars | |
1060 | * really have drained. | |
1061 | */ | |
1062 | if (tty == stli_txcooktty) | |
1063 | stli_flushchars(tty); | |
1064 | tty->closing = 1; | |
4ac4360b AC |
1065 | spin_unlock_irqrestore(&stli_lock, flags); |
1066 | ||
1da177e4 LT |
1067 | if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
1068 | tty_wait_until_sent(tty, portp->closing_wait); | |
1069 | ||
1070 | portp->flags &= ~ASYNC_INITIALIZED; | |
1071 | brdp = stli_brds[portp->brdnr]; | |
1072 | stli_rawclose(brdp, portp, 0, 0); | |
1073 | if (tty->termios->c_cflag & HUPCL) { | |
1074 | stli_mkasysigs(&portp->asig, 0, 0); | |
1075 | if (test_bit(ST_CMDING, &portp->state)) | |
1076 | set_bit(ST_DOSIGS, &portp->state); | |
1077 | else | |
1078 | stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1079 | sizeof(asysigs_t), 0); | |
1080 | } | |
1081 | clear_bit(ST_TXBUSY, &portp->state); | |
1082 | clear_bit(ST_RXSTOP, &portp->state); | |
1083 | set_bit(TTY_IO_ERROR, &tty->flags); | |
1084 | if (tty->ldisc.flush_buffer) | |
1085 | (tty->ldisc.flush_buffer)(tty); | |
1086 | set_bit(ST_DOFLUSHRX, &portp->state); | |
1087 | stli_flushbuffer(tty); | |
1088 | ||
1089 | tty->closing = 0; | |
4ac4360b | 1090 | portp->tty = NULL; |
1da177e4 LT |
1091 | |
1092 | if (portp->openwaitcnt) { | |
1093 | if (portp->close_delay) | |
1094 | msleep_interruptible(jiffies_to_msecs(portp->close_delay)); | |
1095 | wake_up_interruptible(&portp->open_wait); | |
1096 | } | |
1097 | ||
1098 | portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
1099 | wake_up_interruptible(&portp->close_wait); | |
1da177e4 LT |
1100 | } |
1101 | ||
1102 | /*****************************************************************************/ | |
1103 | ||
1104 | /* | |
1105 | * Carry out first open operations on a port. This involves a number of | |
1106 | * commands to be sent to the slave. We need to open the port, set the | |
1107 | * notification events, set the initial port settings, get and set the | |
1108 | * initial signal values. We sleep and wait in between each one. But | |
1109 | * this still all happens pretty quickly. | |
1110 | */ | |
1111 | ||
1112 | static int stli_initopen(stlibrd_t *brdp, stliport_t *portp) | |
1113 | { | |
4ac4360b AC |
1114 | struct tty_struct *tty; |
1115 | asynotify_t nt; | |
1116 | asyport_t aport; | |
1117 | int rc; | |
1da177e4 LT |
1118 | |
1119 | if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) | |
4ac4360b | 1120 | return rc; |
1da177e4 LT |
1121 | |
1122 | memset(&nt, 0, sizeof(asynotify_t)); | |
1123 | nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); | |
1124 | nt.signal = SG_DCD; | |
1125 | if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, | |
1126 | sizeof(asynotify_t), 0)) < 0) | |
4ac4360b | 1127 | return rc; |
1da177e4 LT |
1128 | |
1129 | tty = portp->tty; | |
4ac4360b AC |
1130 | if (tty == NULL) |
1131 | return -ENODEV; | |
1da177e4 LT |
1132 | stli_mkasyport(portp, &aport, tty->termios); |
1133 | if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, | |
1134 | sizeof(asyport_t), 0)) < 0) | |
4ac4360b | 1135 | return rc; |
1da177e4 LT |
1136 | |
1137 | set_bit(ST_GETSIGS, &portp->state); | |
1138 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, | |
1139 | sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1140 | return rc; |
1da177e4 LT |
1141 | if (test_and_clear_bit(ST_GETSIGS, &portp->state)) |
1142 | portp->sigs = stli_mktiocm(portp->asig.sigvalue); | |
1143 | stli_mkasysigs(&portp->asig, 1, 1); | |
1144 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1145 | sizeof(asysigs_t), 0)) < 0) | |
4ac4360b | 1146 | return rc; |
1da177e4 | 1147 | |
4ac4360b | 1148 | return 0; |
1da177e4 LT |
1149 | } |
1150 | ||
1151 | /*****************************************************************************/ | |
1152 | ||
1153 | /* | |
1154 | * Send an open message to the slave. This will sleep waiting for the | |
1155 | * acknowledgement, so must have user context. We need to co-ordinate | |
1156 | * with close events here, since we don't want open and close events | |
1157 | * to overlap. | |
1158 | */ | |
1159 | ||
1160 | static int stli_rawopen(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait) | |
1161 | { | |
4ac4360b AC |
1162 | cdkhdr_t __iomem *hdrp; |
1163 | cdkctrl_t __iomem *cp; | |
1164 | unsigned char __iomem *bits; | |
1165 | unsigned long flags; | |
1166 | int rc; | |
1da177e4 LT |
1167 | |
1168 | /* | |
1169 | * Send a message to the slave to open this port. | |
1170 | */ | |
1da177e4 LT |
1171 | |
1172 | /* | |
1173 | * Slave is already closing this port. This can happen if a hangup | |
1174 | * occurs on this port. So we must wait until it is complete. The | |
1175 | * order of opens and closes may not be preserved across shared | |
1176 | * memory, so we must wait until it is complete. | |
1177 | */ | |
1178 | wait_event_interruptible(portp->raw_wait, | |
1179 | !test_bit(ST_CLOSING, &portp->state)); | |
1180 | if (signal_pending(current)) { | |
1da177e4 LT |
1181 | return -ERESTARTSYS; |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * Everything is ready now, so write the open message into shared | |
1186 | * memory. Once the message is in set the service bits to say that | |
1187 | * this port wants service. | |
1188 | */ | |
4ac4360b | 1189 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1190 | EBRDENABLE(brdp); |
4ac4360b AC |
1191 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1192 | writel(arg, &cp->openarg); | |
1193 | writeb(1, &cp->open); | |
1194 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1195 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1196 | portp->portidx; |
4ac4360b | 1197 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1198 | EBRDDISABLE(brdp); |
1199 | ||
1200 | if (wait == 0) { | |
4ac4360b AC |
1201 | spin_unlock_irqrestore(&brd_lock, flags); |
1202 | return 0; | |
1da177e4 LT |
1203 | } |
1204 | ||
1205 | /* | |
1206 | * Slave is in action, so now we must wait for the open acknowledgment | |
1207 | * to come back. | |
1208 | */ | |
1209 | rc = 0; | |
1210 | set_bit(ST_OPENING, &portp->state); | |
4ac4360b AC |
1211 | spin_unlock_irqrestore(&brd_lock, flags); |
1212 | ||
1da177e4 LT |
1213 | wait_event_interruptible(portp->raw_wait, |
1214 | !test_bit(ST_OPENING, &portp->state)); | |
1215 | if (signal_pending(current)) | |
1216 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1217 | |
1218 | if ((rc == 0) && (portp->rc != 0)) | |
1219 | rc = -EIO; | |
4ac4360b | 1220 | return rc; |
1da177e4 LT |
1221 | } |
1222 | ||
1223 | /*****************************************************************************/ | |
1224 | ||
1225 | /* | |
1226 | * Send a close message to the slave. Normally this will sleep waiting | |
1227 | * for the acknowledgement, but if wait parameter is 0 it will not. If | |
1228 | * wait is true then must have user context (to sleep). | |
1229 | */ | |
1230 | ||
1231 | static int stli_rawclose(stlibrd_t *brdp, stliport_t *portp, unsigned long arg, int wait) | |
1232 | { | |
4ac4360b AC |
1233 | cdkhdr_t __iomem *hdrp; |
1234 | cdkctrl_t __iomem *cp; | |
1235 | unsigned char __iomem *bits; | |
1236 | unsigned long flags; | |
1237 | int rc; | |
1da177e4 LT |
1238 | |
1239 | /* | |
1240 | * Slave is already closing this port. This can happen if a hangup | |
1241 | * occurs on this port. | |
1242 | */ | |
1243 | if (wait) { | |
1244 | wait_event_interruptible(portp->raw_wait, | |
1245 | !test_bit(ST_CLOSING, &portp->state)); | |
1246 | if (signal_pending(current)) { | |
1da177e4 LT |
1247 | return -ERESTARTSYS; |
1248 | } | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * Write the close command into shared memory. | |
1253 | */ | |
4ac4360b | 1254 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1255 | EBRDENABLE(brdp); |
4ac4360b AC |
1256 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1257 | writel(arg, &cp->closearg); | |
1258 | writeb(1, &cp->close); | |
1259 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1260 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1261 | portp->portidx; |
4ac4360b | 1262 | writeb(readb(bits) |portp->portbit, bits); |
1da177e4 LT |
1263 | EBRDDISABLE(brdp); |
1264 | ||
1265 | set_bit(ST_CLOSING, &portp->state); | |
4ac4360b AC |
1266 | spin_unlock_irqrestore(&brd_lock, flags); |
1267 | ||
1268 | if (wait == 0) | |
1269 | return 0; | |
1da177e4 LT |
1270 | |
1271 | /* | |
1272 | * Slave is in action, so now we must wait for the open acknowledgment | |
1273 | * to come back. | |
1274 | */ | |
1275 | rc = 0; | |
1276 | wait_event_interruptible(portp->raw_wait, | |
1277 | !test_bit(ST_CLOSING, &portp->state)); | |
1278 | if (signal_pending(current)) | |
1279 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1280 | |
1281 | if ((rc == 0) && (portp->rc != 0)) | |
1282 | rc = -EIO; | |
4ac4360b | 1283 | return rc; |
1da177e4 LT |
1284 | } |
1285 | ||
1286 | /*****************************************************************************/ | |
1287 | ||
1288 | /* | |
1289 | * Send a command to the slave and wait for the response. This must | |
1290 | * have user context (it sleeps). This routine is generic in that it | |
1291 | * can send any type of command. Its purpose is to wait for that command | |
1292 | * to complete (as opposed to initiating the command then returning). | |
1293 | */ | |
1294 | ||
1295 | static int stli_cmdwait(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) | |
1296 | { | |
1da177e4 LT |
1297 | wait_event_interruptible(portp->raw_wait, |
1298 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1299 | if (signal_pending(current)) |
1da177e4 | 1300 | return -ERESTARTSYS; |
1da177e4 LT |
1301 | |
1302 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
1303 | ||
1304 | wait_event_interruptible(portp->raw_wait, | |
1305 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1306 | if (signal_pending(current)) |
1da177e4 | 1307 | return -ERESTARTSYS; |
1da177e4 LT |
1308 | |
1309 | if (portp->rc != 0) | |
4ac4360b AC |
1310 | return -EIO; |
1311 | return 0; | |
1da177e4 LT |
1312 | } |
1313 | ||
1314 | /*****************************************************************************/ | |
1315 | ||
1316 | /* | |
1317 | * Send the termios settings for this port to the slave. This sleeps | |
1318 | * waiting for the command to complete - so must have user context. | |
1319 | */ | |
1320 | ||
1321 | static int stli_setport(stliport_t *portp) | |
1322 | { | |
4ac4360b AC |
1323 | stlibrd_t *brdp; |
1324 | asyport_t aport; | |
1da177e4 | 1325 | |
4ac4360b AC |
1326 | if (portp == NULL) |
1327 | return -ENODEV; | |
1328 | if (portp->tty == NULL) | |
1329 | return -ENODEV; | |
1330 | if (portp->brdnr < 0 && portp->brdnr >= stli_nrbrds) | |
1331 | return -ENODEV; | |
1da177e4 | 1332 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1333 | if (brdp == NULL) |
1334 | return -ENODEV; | |
1da177e4 LT |
1335 | |
1336 | stli_mkasyport(portp, &aport, portp->tty->termios); | |
1337 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); | |
1338 | } | |
1339 | ||
1340 | /*****************************************************************************/ | |
1341 | ||
1342 | /* | |
1343 | * Possibly need to wait for carrier (DCD signal) to come high. Say | |
1344 | * maybe because if we are clocal then we don't need to wait... | |
1345 | */ | |
1346 | ||
1347 | static int stli_waitcarrier(stlibrd_t *brdp, stliport_t *portp, struct file *filp) | |
1348 | { | |
4ac4360b AC |
1349 | unsigned long flags; |
1350 | int rc, doclocal; | |
1da177e4 LT |
1351 | |
1352 | rc = 0; | |
1353 | doclocal = 0; | |
1354 | ||
1355 | if (portp->tty->termios->c_cflag & CLOCAL) | |
1356 | doclocal++; | |
1357 | ||
4ac4360b | 1358 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
1359 | portp->openwaitcnt++; |
1360 | if (! tty_hung_up_p(filp)) | |
1361 | portp->refcount--; | |
4ac4360b | 1362 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
1363 | |
1364 | for (;;) { | |
1365 | stli_mkasysigs(&portp->asig, 1, 1); | |
1366 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, | |
1367 | &portp->asig, sizeof(asysigs_t), 0)) < 0) | |
1368 | break; | |
1369 | if (tty_hung_up_p(filp) || | |
1370 | ((portp->flags & ASYNC_INITIALIZED) == 0)) { | |
1371 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
1372 | rc = -EBUSY; | |
1373 | else | |
1374 | rc = -ERESTARTSYS; | |
1375 | break; | |
1376 | } | |
1377 | if (((portp->flags & ASYNC_CLOSING) == 0) && | |
1378 | (doclocal || (portp->sigs & TIOCM_CD))) { | |
1379 | break; | |
1380 | } | |
1381 | if (signal_pending(current)) { | |
1382 | rc = -ERESTARTSYS; | |
1383 | break; | |
1384 | } | |
1385 | interruptible_sleep_on(&portp->open_wait); | |
1386 | } | |
1387 | ||
4ac4360b | 1388 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
1389 | if (! tty_hung_up_p(filp)) |
1390 | portp->refcount++; | |
1391 | portp->openwaitcnt--; | |
4ac4360b | 1392 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 | 1393 | |
4ac4360b | 1394 | return rc; |
1da177e4 LT |
1395 | } |
1396 | ||
1397 | /*****************************************************************************/ | |
1398 | ||
1399 | /* | |
1400 | * Write routine. Take the data and put it in the shared memory ring | |
1401 | * queue. If port is not already sending chars then need to mark the | |
1402 | * service bits for this port. | |
1403 | */ | |
1404 | ||
1405 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1406 | { | |
4ac4360b AC |
1407 | cdkasy_t __iomem *ap; |
1408 | cdkhdr_t __iomem *hdrp; | |
1409 | unsigned char __iomem *bits; | |
1410 | unsigned char __iomem *shbuf; | |
1411 | unsigned char *chbuf; | |
1412 | stliport_t *portp; | |
1413 | stlibrd_t *brdp; | |
1414 | unsigned int len, stlen, head, tail, size; | |
1415 | unsigned long flags; | |
1da177e4 | 1416 | |
1da177e4 LT |
1417 | if (tty == stli_txcooktty) |
1418 | stli_flushchars(tty); | |
1419 | portp = tty->driver_data; | |
4ac4360b AC |
1420 | if (portp == NULL) |
1421 | return 0; | |
1da177e4 | 1422 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
4ac4360b | 1423 | return 0; |
1da177e4 | 1424 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1425 | if (brdp == NULL) |
1426 | return 0; | |
1da177e4 LT |
1427 | chbuf = (unsigned char *) buf; |
1428 | ||
1429 | /* | |
1430 | * All data is now local, shove as much as possible into shared memory. | |
1431 | */ | |
4ac4360b | 1432 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1433 | EBRDENABLE(brdp); |
4ac4360b AC |
1434 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1435 | head = (unsigned int) readw(&ap->txq.head); | |
1436 | tail = (unsigned int) readw(&ap->txq.tail); | |
1437 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1438 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1439 | size = portp->txsize; |
1440 | if (head >= tail) { | |
1441 | len = size - (head - tail) - 1; | |
1442 | stlen = size - head; | |
1443 | } else { | |
1444 | len = tail - head - 1; | |
1445 | stlen = len; | |
1446 | } | |
1447 | ||
1448 | len = MIN(len, count); | |
1449 | count = 0; | |
4ac4360b | 1450 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1451 | |
1452 | while (len > 0) { | |
1453 | stlen = MIN(len, stlen); | |
4ac4360b | 1454 | memcpy_toio(shbuf + head, chbuf, stlen); |
1da177e4 LT |
1455 | chbuf += stlen; |
1456 | len -= stlen; | |
1457 | count += stlen; | |
1458 | head += stlen; | |
1459 | if (head >= size) { | |
1460 | head = 0; | |
1461 | stlen = tail; | |
1462 | } | |
1463 | } | |
1464 | ||
4ac4360b AC |
1465 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1466 | writew(head, &ap->txq.head); | |
1da177e4 | 1467 | if (test_bit(ST_TXBUSY, &portp->state)) { |
4ac4360b AC |
1468 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1469 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1470 | } |
4ac4360b AC |
1471 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1472 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1473 | portp->portidx; |
4ac4360b | 1474 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1475 | set_bit(ST_TXBUSY, &portp->state); |
1476 | EBRDDISABLE(brdp); | |
4ac4360b | 1477 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1478 | |
1479 | return(count); | |
1480 | } | |
1481 | ||
1482 | /*****************************************************************************/ | |
1483 | ||
1484 | /* | |
1485 | * Output a single character. We put it into a temporary local buffer | |
1486 | * (for speed) then write out that buffer when the flushchars routine | |
1487 | * is called. There is a safety catch here so that if some other port | |
1488 | * writes chars before the current buffer has been, then we write them | |
1489 | * first them do the new ports. | |
1490 | */ | |
1491 | ||
1492 | static void stli_putchar(struct tty_struct *tty, unsigned char ch) | |
1493 | { | |
1da177e4 | 1494 | if (tty != stli_txcooktty) { |
4ac4360b | 1495 | if (stli_txcooktty != NULL) |
1da177e4 LT |
1496 | stli_flushchars(stli_txcooktty); |
1497 | stli_txcooktty = tty; | |
1498 | } | |
1499 | ||
1500 | stli_txcookbuf[stli_txcooksize++] = ch; | |
1501 | } | |
1502 | ||
1503 | /*****************************************************************************/ | |
1504 | ||
1505 | /* | |
1506 | * Transfer characters from the local TX cooking buffer to the board. | |
1507 | * We sort of ignore the tty that gets passed in here. We rely on the | |
1508 | * info stored with the TX cook buffer to tell us which port to flush | |
1509 | * the data on. In any case we clean out the TX cook buffer, for re-use | |
1510 | * by someone else. | |
1511 | */ | |
1512 | ||
1513 | static void stli_flushchars(struct tty_struct *tty) | |
1514 | { | |
4ac4360b AC |
1515 | cdkhdr_t __iomem *hdrp; |
1516 | unsigned char __iomem *bits; | |
1517 | cdkasy_t __iomem *ap; | |
1518 | struct tty_struct *cooktty; | |
1519 | stliport_t *portp; | |
1520 | stlibrd_t *brdp; | |
1521 | unsigned int len, stlen, head, tail, size, count, cooksize; | |
1522 | unsigned char *buf; | |
1523 | unsigned char __iomem *shbuf; | |
1524 | unsigned long flags; | |
1da177e4 LT |
1525 | |
1526 | cooksize = stli_txcooksize; | |
1527 | cooktty = stli_txcooktty; | |
1528 | stli_txcooksize = 0; | |
1529 | stli_txcookrealsize = 0; | |
4ac4360b | 1530 | stli_txcooktty = NULL; |
1da177e4 | 1531 | |
4ac4360b | 1532 | if (tty == NULL) |
1da177e4 | 1533 | return; |
4ac4360b | 1534 | if (cooktty == NULL) |
1da177e4 LT |
1535 | return; |
1536 | if (tty != cooktty) | |
1537 | tty = cooktty; | |
1538 | if (cooksize == 0) | |
1539 | return; | |
1540 | ||
1541 | portp = tty->driver_data; | |
4ac4360b | 1542 | if (portp == NULL) |
1da177e4 LT |
1543 | return; |
1544 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) | |
1545 | return; | |
1546 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1547 | if (brdp == NULL) |
1da177e4 LT |
1548 | return; |
1549 | ||
4ac4360b | 1550 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
1551 | EBRDENABLE(brdp); |
1552 | ||
4ac4360b AC |
1553 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1554 | head = (unsigned int) readw(&ap->txq.head); | |
1555 | tail = (unsigned int) readw(&ap->txq.tail); | |
1556 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1557 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1558 | size = portp->txsize; |
1559 | if (head >= tail) { | |
1560 | len = size - (head - tail) - 1; | |
1561 | stlen = size - head; | |
1562 | } else { | |
1563 | len = tail - head - 1; | |
1564 | stlen = len; | |
1565 | } | |
1566 | ||
1567 | len = MIN(len, cooksize); | |
1568 | count = 0; | |
1569 | shbuf = (char *) EBRDGETMEMPTR(brdp, portp->txoffset); | |
1570 | buf = stli_txcookbuf; | |
1571 | ||
1572 | while (len > 0) { | |
1573 | stlen = MIN(len, stlen); | |
4ac4360b | 1574 | memcpy_toio(shbuf + head, buf, stlen); |
1da177e4 LT |
1575 | buf += stlen; |
1576 | len -= stlen; | |
1577 | count += stlen; | |
1578 | head += stlen; | |
1579 | if (head >= size) { | |
1580 | head = 0; | |
1581 | stlen = tail; | |
1582 | } | |
1583 | } | |
1584 | ||
4ac4360b AC |
1585 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1586 | writew(head, &ap->txq.head); | |
1da177e4 LT |
1587 | |
1588 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
4ac4360b AC |
1589 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1590 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1591 | } |
4ac4360b AC |
1592 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1593 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1594 | portp->portidx; |
4ac4360b | 1595 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1596 | set_bit(ST_TXBUSY, &portp->state); |
1597 | ||
1598 | EBRDDISABLE(brdp); | |
4ac4360b | 1599 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1600 | } |
1601 | ||
1602 | /*****************************************************************************/ | |
1603 | ||
1604 | static int stli_writeroom(struct tty_struct *tty) | |
1605 | { | |
4ac4360b AC |
1606 | cdkasyrq_t __iomem *rp; |
1607 | stliport_t *portp; | |
1608 | stlibrd_t *brdp; | |
1609 | unsigned int head, tail, len; | |
1610 | unsigned long flags; | |
1da177e4 | 1611 | |
1da177e4 LT |
1612 | if (tty == stli_txcooktty) { |
1613 | if (stli_txcookrealsize != 0) { | |
1614 | len = stli_txcookrealsize - stli_txcooksize; | |
4ac4360b | 1615 | return len; |
1da177e4 LT |
1616 | } |
1617 | } | |
1618 | ||
1619 | portp = tty->driver_data; | |
4ac4360b AC |
1620 | if (portp == NULL) |
1621 | return 0; | |
1da177e4 | 1622 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
4ac4360b | 1623 | return 0; |
1da177e4 | 1624 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1625 | if (brdp == NULL) |
1626 | return 0; | |
1da177e4 | 1627 | |
4ac4360b | 1628 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1629 | EBRDENABLE(brdp); |
4ac4360b AC |
1630 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1631 | head = (unsigned int) readw(&rp->head); | |
1632 | tail = (unsigned int) readw(&rp->tail); | |
1633 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1634 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1635 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); |
1636 | len--; | |
1637 | EBRDDISABLE(brdp); | |
4ac4360b | 1638 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1639 | |
1640 | if (tty == stli_txcooktty) { | |
1641 | stli_txcookrealsize = len; | |
1642 | len -= stli_txcooksize; | |
1643 | } | |
4ac4360b | 1644 | return len; |
1da177e4 LT |
1645 | } |
1646 | ||
1647 | /*****************************************************************************/ | |
1648 | ||
1649 | /* | |
1650 | * Return the number of characters in the transmit buffer. Normally we | |
1651 | * will return the number of chars in the shared memory ring queue. | |
1652 | * We need to kludge around the case where the shared memory buffer is | |
1653 | * empty but not all characters have drained yet, for this case just | |
1654 | * return that there is 1 character in the buffer! | |
1655 | */ | |
1656 | ||
1657 | static int stli_charsinbuffer(struct tty_struct *tty) | |
1658 | { | |
4ac4360b AC |
1659 | cdkasyrq_t __iomem *rp; |
1660 | stliport_t *portp; | |
1661 | stlibrd_t *brdp; | |
1662 | unsigned int head, tail, len; | |
1663 | unsigned long flags; | |
1da177e4 | 1664 | |
1da177e4 LT |
1665 | if (tty == stli_txcooktty) |
1666 | stli_flushchars(tty); | |
1667 | portp = tty->driver_data; | |
4ac4360b AC |
1668 | if (portp == NULL) |
1669 | return 0; | |
1da177e4 | 1670 | if ((portp->brdnr < 0) || (portp->brdnr >= stli_nrbrds)) |
4ac4360b | 1671 | return 0; |
1da177e4 | 1672 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1673 | if (brdp == NULL) |
1674 | return 0; | |
1da177e4 | 1675 | |
4ac4360b | 1676 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1677 | EBRDENABLE(brdp); |
4ac4360b AC |
1678 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1679 | head = (unsigned int) readw(&rp->head); | |
1680 | tail = (unsigned int) readw(&rp->tail); | |
1681 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1682 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1683 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); |
1684 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) | |
1685 | len = 1; | |
1686 | EBRDDISABLE(brdp); | |
4ac4360b | 1687 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 | 1688 | |
4ac4360b | 1689 | return len; |
1da177e4 LT |
1690 | } |
1691 | ||
1692 | /*****************************************************************************/ | |
1693 | ||
1694 | /* | |
1695 | * Generate the serial struct info. | |
1696 | */ | |
1697 | ||
1698 | static int stli_getserial(stliport_t *portp, struct serial_struct __user *sp) | |
1699 | { | |
4ac4360b AC |
1700 | struct serial_struct sio; |
1701 | stlibrd_t *brdp; | |
1da177e4 LT |
1702 | |
1703 | memset(&sio, 0, sizeof(struct serial_struct)); | |
1704 | sio.type = PORT_UNKNOWN; | |
1705 | sio.line = portp->portnr; | |
1706 | sio.irq = 0; | |
1707 | sio.flags = portp->flags; | |
1708 | sio.baud_base = portp->baud_base; | |
1709 | sio.close_delay = portp->close_delay; | |
1710 | sio.closing_wait = portp->closing_wait; | |
1711 | sio.custom_divisor = portp->custom_divisor; | |
1712 | sio.xmit_fifo_size = 0; | |
1713 | sio.hub6 = 0; | |
1714 | ||
1715 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1716 | if (brdp != NULL) |
1da177e4 LT |
1717 | sio.port = brdp->iobase; |
1718 | ||
1719 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? | |
1720 | -EFAULT : 0; | |
1721 | } | |
1722 | ||
1723 | /*****************************************************************************/ | |
1724 | ||
1725 | /* | |
1726 | * Set port according to the serial struct info. | |
1727 | * At this point we do not do any auto-configure stuff, so we will | |
1728 | * just quietly ignore any requests to change irq, etc. | |
1729 | */ | |
1730 | ||
1731 | static int stli_setserial(stliport_t *portp, struct serial_struct __user *sp) | |
1732 | { | |
4ac4360b AC |
1733 | struct serial_struct sio; |
1734 | int rc; | |
1da177e4 LT |
1735 | |
1736 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) | |
1737 | return -EFAULT; | |
1738 | if (!capable(CAP_SYS_ADMIN)) { | |
1739 | if ((sio.baud_base != portp->baud_base) || | |
1740 | (sio.close_delay != portp->close_delay) || | |
1741 | ((sio.flags & ~ASYNC_USR_MASK) != | |
1742 | (portp->flags & ~ASYNC_USR_MASK))) | |
4ac4360b | 1743 | return -EPERM; |
1da177e4 LT |
1744 | } |
1745 | ||
1746 | portp->flags = (portp->flags & ~ASYNC_USR_MASK) | | |
1747 | (sio.flags & ASYNC_USR_MASK); | |
1748 | portp->baud_base = sio.baud_base; | |
1749 | portp->close_delay = sio.close_delay; | |
1750 | portp->closing_wait = sio.closing_wait; | |
1751 | portp->custom_divisor = sio.custom_divisor; | |
1752 | ||
1753 | if ((rc = stli_setport(portp)) < 0) | |
4ac4360b AC |
1754 | return rc; |
1755 | return 0; | |
1da177e4 LT |
1756 | } |
1757 | ||
1758 | /*****************************************************************************/ | |
1759 | ||
1760 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) | |
1761 | { | |
1762 | stliport_t *portp = tty->driver_data; | |
1763 | stlibrd_t *brdp; | |
1764 | int rc; | |
1765 | ||
4ac4360b AC |
1766 | if (portp == NULL) |
1767 | return -ENODEV; | |
1768 | if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds) | |
1769 | return 0; | |
1da177e4 | 1770 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1771 | if (brdp == NULL) |
1772 | return 0; | |
1da177e4 | 1773 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1774 | return -EIO; |
1da177e4 LT |
1775 | |
1776 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, | |
1777 | &portp->asig, sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1778 | return rc; |
1da177e4 LT |
1779 | |
1780 | return stli_mktiocm(portp->asig.sigvalue); | |
1781 | } | |
1782 | ||
1783 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, | |
1784 | unsigned int set, unsigned int clear) | |
1785 | { | |
1786 | stliport_t *portp = tty->driver_data; | |
1787 | stlibrd_t *brdp; | |
1788 | int rts = -1, dtr = -1; | |
1789 | ||
4ac4360b AC |
1790 | if (portp == NULL) |
1791 | return -ENODEV; | |
1792 | if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds) | |
1793 | return 0; | |
1da177e4 | 1794 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1795 | if (brdp == NULL) |
1796 | return 0; | |
1da177e4 | 1797 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1798 | return -EIO; |
1da177e4 LT |
1799 | |
1800 | if (set & TIOCM_RTS) | |
1801 | rts = 1; | |
1802 | if (set & TIOCM_DTR) | |
1803 | dtr = 1; | |
1804 | if (clear & TIOCM_RTS) | |
1805 | rts = 0; | |
1806 | if (clear & TIOCM_DTR) | |
1807 | dtr = 0; | |
1808 | ||
1809 | stli_mkasysigs(&portp->asig, dtr, rts); | |
1810 | ||
1811 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1812 | sizeof(asysigs_t), 0); | |
1813 | } | |
1814 | ||
1815 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1816 | { | |
4ac4360b AC |
1817 | stliport_t *portp; |
1818 | stlibrd_t *brdp; | |
1819 | unsigned int ival; | |
1820 | int rc; | |
1da177e4 LT |
1821 | void __user *argp = (void __user *)arg; |
1822 | ||
1da177e4 | 1823 | portp = tty->driver_data; |
4ac4360b AC |
1824 | if (portp == NULL) |
1825 | return -ENODEV; | |
1826 | if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds) | |
1827 | return 0; | |
1da177e4 | 1828 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1829 | if (brdp == NULL) |
1830 | return 0; | |
1da177e4 LT |
1831 | |
1832 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && | |
1833 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { | |
1834 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
4ac4360b | 1835 | return -EIO; |
1da177e4 LT |
1836 | } |
1837 | ||
1838 | rc = 0; | |
1839 | ||
1840 | switch (cmd) { | |
1841 | case TIOCGSOFTCAR: | |
1842 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), | |
1843 | (unsigned __user *) arg); | |
1844 | break; | |
1845 | case TIOCSSOFTCAR: | |
1846 | if ((rc = get_user(ival, (unsigned __user *) arg)) == 0) | |
1847 | tty->termios->c_cflag = | |
1848 | (tty->termios->c_cflag & ~CLOCAL) | | |
1849 | (ival ? CLOCAL : 0); | |
1850 | break; | |
1851 | case TIOCGSERIAL: | |
1852 | rc = stli_getserial(portp, argp); | |
1853 | break; | |
1854 | case TIOCSSERIAL: | |
1855 | rc = stli_setserial(portp, argp); | |
1856 | break; | |
1857 | case STL_GETPFLAG: | |
1858 | rc = put_user(portp->pflag, (unsigned __user *)argp); | |
1859 | break; | |
1860 | case STL_SETPFLAG: | |
1861 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) | |
1862 | stli_setport(portp); | |
1863 | break; | |
1864 | case COM_GETPORTSTATS: | |
1865 | rc = stli_getportstats(portp, argp); | |
1866 | break; | |
1867 | case COM_CLRPORTSTATS: | |
1868 | rc = stli_clrportstats(portp, argp); | |
1869 | break; | |
1870 | case TIOCSERCONFIG: | |
1871 | case TIOCSERGWILD: | |
1872 | case TIOCSERSWILD: | |
1873 | case TIOCSERGETLSR: | |
1874 | case TIOCSERGSTRUCT: | |
1875 | case TIOCSERGETMULTI: | |
1876 | case TIOCSERSETMULTI: | |
1877 | default: | |
1878 | rc = -ENOIOCTLCMD; | |
1879 | break; | |
1880 | } | |
1881 | ||
4ac4360b | 1882 | return rc; |
1da177e4 LT |
1883 | } |
1884 | ||
1885 | /*****************************************************************************/ | |
1886 | ||
1887 | /* | |
1888 | * This routine assumes that we have user context and can sleep. | |
1889 | * Looks like it is true for the current ttys implementation..!! | |
1890 | */ | |
1891 | ||
1892 | static void stli_settermios(struct tty_struct *tty, struct termios *old) | |
1893 | { | |
4ac4360b AC |
1894 | stliport_t *portp; |
1895 | stlibrd_t *brdp; | |
1896 | struct termios *tiosp; | |
1897 | asyport_t aport; | |
1da177e4 | 1898 | |
4ac4360b | 1899 | if (tty == NULL) |
1da177e4 LT |
1900 | return; |
1901 | portp = tty->driver_data; | |
4ac4360b | 1902 | if (portp == NULL) |
1da177e4 | 1903 | return; |
4ac4360b | 1904 | if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1905 | return; |
1906 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1907 | if (brdp == NULL) |
1da177e4 LT |
1908 | return; |
1909 | ||
1910 | tiosp = tty->termios; | |
1911 | if ((tiosp->c_cflag == old->c_cflag) && | |
1912 | (tiosp->c_iflag == old->c_iflag)) | |
1913 | return; | |
1914 | ||
1915 | stli_mkasyport(portp, &aport, tiosp); | |
1916 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); | |
1917 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); | |
1918 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1919 | sizeof(asysigs_t), 0); | |
1920 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) | |
1921 | tty->hw_stopped = 0; | |
1922 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) | |
1923 | wake_up_interruptible(&portp->open_wait); | |
1924 | } | |
1925 | ||
1926 | /*****************************************************************************/ | |
1927 | ||
1928 | /* | |
1929 | * Attempt to flow control who ever is sending us data. We won't really | |
1930 | * do any flow control action here. We can't directly, and even if we | |
1931 | * wanted to we would have to send a command to the slave. The slave | |
1932 | * knows how to flow control, and will do so when its buffers reach its | |
1933 | * internal high water marks. So what we will do is set a local state | |
1934 | * bit that will stop us sending any RX data up from the poll routine | |
1935 | * (which is the place where RX data from the slave is handled). | |
1936 | */ | |
1937 | ||
1938 | static void stli_throttle(struct tty_struct *tty) | |
1939 | { | |
4ac4360b AC |
1940 | stliport_t *portp = tty->driver_data; |
1941 | if (portp == NULL) | |
1da177e4 | 1942 | return; |
1da177e4 LT |
1943 | set_bit(ST_RXSTOP, &portp->state); |
1944 | } | |
1945 | ||
1946 | /*****************************************************************************/ | |
1947 | ||
1948 | /* | |
1949 | * Unflow control the device sending us data... That means that all | |
1950 | * we have to do is clear the RXSTOP state bit. The next poll call | |
1951 | * will then be able to pass the RX data back up. | |
1952 | */ | |
1953 | ||
1954 | static void stli_unthrottle(struct tty_struct *tty) | |
1955 | { | |
4ac4360b AC |
1956 | stliport_t *portp = tty->driver_data; |
1957 | if (portp == NULL) | |
1da177e4 | 1958 | return; |
1da177e4 LT |
1959 | clear_bit(ST_RXSTOP, &portp->state); |
1960 | } | |
1961 | ||
1962 | /*****************************************************************************/ | |
1963 | ||
1964 | /* | |
4ac4360b | 1965 | * Stop the transmitter. |
1da177e4 LT |
1966 | */ |
1967 | ||
1968 | static void stli_stop(struct tty_struct *tty) | |
1969 | { | |
1da177e4 LT |
1970 | } |
1971 | ||
1972 | /*****************************************************************************/ | |
1973 | ||
1974 | /* | |
4ac4360b | 1975 | * Start the transmitter again. |
1da177e4 LT |
1976 | */ |
1977 | ||
1978 | static void stli_start(struct tty_struct *tty) | |
1979 | { | |
1da177e4 LT |
1980 | } |
1981 | ||
1982 | /*****************************************************************************/ | |
1983 | ||
1984 | /* | |
1985 | * Scheduler called hang up routine. This is called from the scheduler, | |
1986 | * not direct from the driver "poll" routine. We can't call it there | |
1987 | * since the real local hangup code will enable/disable the board and | |
1988 | * other things that we can't do while handling the poll. Much easier | |
1989 | * to deal with it some time later (don't really care when, hangups | |
1990 | * aren't that time critical). | |
1991 | */ | |
1992 | ||
1993 | static void stli_dohangup(void *arg) | |
1994 | { | |
4ac4360b AC |
1995 | stliport_t *portp = (stliport_t *) arg; |
1996 | if (portp->tty != NULL) { | |
1997 | tty_hangup(portp->tty); | |
1da177e4 LT |
1998 | } |
1999 | } | |
2000 | ||
2001 | /*****************************************************************************/ | |
2002 | ||
2003 | /* | |
2004 | * Hangup this port. This is pretty much like closing the port, only | |
2005 | * a little more brutal. No waiting for data to drain. Shutdown the | |
2006 | * port and maybe drop signals. This is rather tricky really. We want | |
2007 | * to close the port as well. | |
2008 | */ | |
2009 | ||
2010 | static void stli_hangup(struct tty_struct *tty) | |
2011 | { | |
4ac4360b AC |
2012 | stliport_t *portp; |
2013 | stlibrd_t *brdp; | |
2014 | unsigned long flags; | |
1da177e4 | 2015 | |
1da177e4 | 2016 | portp = tty->driver_data; |
4ac4360b | 2017 | if (portp == NULL) |
1da177e4 | 2018 | return; |
4ac4360b | 2019 | if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
2020 | return; |
2021 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 2022 | if (brdp == NULL) |
1da177e4 LT |
2023 | return; |
2024 | ||
2025 | portp->flags &= ~ASYNC_INITIALIZED; | |
2026 | ||
4ac4360b | 2027 | if (!test_bit(ST_CLOSING, &portp->state)) |
1da177e4 | 2028 | stli_rawclose(brdp, portp, 0, 0); |
4ac4360b AC |
2029 | |
2030 | spin_lock_irqsave(&stli_lock, flags); | |
1da177e4 LT |
2031 | if (tty->termios->c_cflag & HUPCL) { |
2032 | stli_mkasysigs(&portp->asig, 0, 0); | |
2033 | if (test_bit(ST_CMDING, &portp->state)) { | |
2034 | set_bit(ST_DOSIGS, &portp->state); | |
2035 | set_bit(ST_DOFLUSHTX, &portp->state); | |
2036 | set_bit(ST_DOFLUSHRX, &portp->state); | |
2037 | } else { | |
2038 | stli_sendcmd(brdp, portp, A_SETSIGNALSF, | |
2039 | &portp->asig, sizeof(asysigs_t), 0); | |
2040 | } | |
2041 | } | |
1da177e4 LT |
2042 | |
2043 | clear_bit(ST_TXBUSY, &portp->state); | |
2044 | clear_bit(ST_RXSTOP, &portp->state); | |
2045 | set_bit(TTY_IO_ERROR, &tty->flags); | |
4ac4360b | 2046 | portp->tty = NULL; |
1da177e4 LT |
2047 | portp->flags &= ~ASYNC_NORMAL_ACTIVE; |
2048 | portp->refcount = 0; | |
4ac4360b AC |
2049 | spin_unlock_irqrestore(&stli_lock, flags); |
2050 | ||
1da177e4 LT |
2051 | wake_up_interruptible(&portp->open_wait); |
2052 | } | |
2053 | ||
2054 | /*****************************************************************************/ | |
2055 | ||
2056 | /* | |
2057 | * Flush characters from the lower buffer. We may not have user context | |
2058 | * so we cannot sleep waiting for it to complete. Also we need to check | |
2059 | * if there is chars for this port in the TX cook buffer, and flush them | |
2060 | * as well. | |
2061 | */ | |
2062 | ||
2063 | static void stli_flushbuffer(struct tty_struct *tty) | |
2064 | { | |
4ac4360b AC |
2065 | stliport_t *portp; |
2066 | stlibrd_t *brdp; | |
2067 | unsigned long ftype, flags; | |
1da177e4 | 2068 | |
1da177e4 | 2069 | portp = tty->driver_data; |
4ac4360b | 2070 | if (portp == NULL) |
1da177e4 | 2071 | return; |
4ac4360b | 2072 | if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
2073 | return; |
2074 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 2075 | if (brdp == NULL) |
1da177e4 LT |
2076 | return; |
2077 | ||
4ac4360b | 2078 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 2079 | if (tty == stli_txcooktty) { |
4ac4360b | 2080 | stli_txcooktty = NULL; |
1da177e4 LT |
2081 | stli_txcooksize = 0; |
2082 | stli_txcookrealsize = 0; | |
2083 | } | |
2084 | if (test_bit(ST_CMDING, &portp->state)) { | |
2085 | set_bit(ST_DOFLUSHTX, &portp->state); | |
2086 | } else { | |
2087 | ftype = FLUSHTX; | |
2088 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2089 | ftype |= FLUSHRX; | |
2090 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2091 | } | |
4ac4360b | 2092 | __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); |
1da177e4 | 2093 | } |
4ac4360b AC |
2094 | spin_unlock_irqrestore(&brd_lock, flags); |
2095 | tty_wakeup(tty); | |
1da177e4 LT |
2096 | } |
2097 | ||
2098 | /*****************************************************************************/ | |
2099 | ||
2100 | static void stli_breakctl(struct tty_struct *tty, int state) | |
2101 | { | |
2102 | stlibrd_t *brdp; | |
2103 | stliport_t *portp; | |
2104 | long arg; | |
1da177e4 | 2105 | |
1da177e4 | 2106 | portp = tty->driver_data; |
4ac4360b | 2107 | if (portp == NULL) |
1da177e4 | 2108 | return; |
4ac4360b | 2109 | if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
2110 | return; |
2111 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 2112 | if (brdp == NULL) |
1da177e4 LT |
2113 | return; |
2114 | ||
1da177e4 LT |
2115 | arg = (state == -1) ? BREAKON : BREAKOFF; |
2116 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); | |
1da177e4 LT |
2117 | } |
2118 | ||
2119 | /*****************************************************************************/ | |
2120 | ||
2121 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) | |
2122 | { | |
4ac4360b AC |
2123 | stliport_t *portp; |
2124 | unsigned long tend; | |
1da177e4 | 2125 | |
4ac4360b | 2126 | if (tty == NULL) |
1da177e4 LT |
2127 | return; |
2128 | portp = tty->driver_data; | |
4ac4360b | 2129 | if (portp == NULL) |
1da177e4 LT |
2130 | return; |
2131 | ||
2132 | if (timeout == 0) | |
2133 | timeout = HZ; | |
2134 | tend = jiffies + timeout; | |
2135 | ||
2136 | while (test_bit(ST_TXBUSY, &portp->state)) { | |
2137 | if (signal_pending(current)) | |
2138 | break; | |
2139 | msleep_interruptible(20); | |
2140 | if (time_after_eq(jiffies, tend)) | |
2141 | break; | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | /*****************************************************************************/ | |
2146 | ||
2147 | static void stli_sendxchar(struct tty_struct *tty, char ch) | |
2148 | { | |
2149 | stlibrd_t *brdp; | |
2150 | stliport_t *portp; | |
2151 | asyctrl_t actrl; | |
2152 | ||
1da177e4 | 2153 | portp = tty->driver_data; |
4ac4360b | 2154 | if (portp == NULL) |
1da177e4 | 2155 | return; |
4ac4360b | 2156 | if (portp->brdnr < 0 || portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
2157 | return; |
2158 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 2159 | if (brdp == NULL) |
1da177e4 LT |
2160 | return; |
2161 | ||
2162 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
2163 | if (ch == STOP_CHAR(tty)) { | |
2164 | actrl.rxctrl = CT_STOPFLOW; | |
2165 | } else if (ch == START_CHAR(tty)) { | |
2166 | actrl.rxctrl = CT_STARTFLOW; | |
2167 | } else { | |
2168 | actrl.txctrl = CT_SENDCHR; | |
2169 | actrl.tximdch = ch; | |
2170 | } | |
1da177e4 LT |
2171 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
2172 | } | |
2173 | ||
2174 | /*****************************************************************************/ | |
2175 | ||
2176 | #define MAXLINE 80 | |
2177 | ||
2178 | /* | |
2179 | * Format info for a specified port. The line is deliberately limited | |
2180 | * to 80 characters. (If it is too long it will be truncated, if too | |
2181 | * short then padded with spaces). | |
2182 | */ | |
2183 | ||
2184 | static int stli_portinfo(stlibrd_t *brdp, stliport_t *portp, int portnr, char *pos) | |
2185 | { | |
4ac4360b AC |
2186 | char *sp, *uart; |
2187 | int rc, cnt; | |
1da177e4 LT |
2188 | |
2189 | rc = stli_portcmdstats(portp); | |
2190 | ||
2191 | uart = "UNKNOWN"; | |
2192 | if (brdp->state & BST_STARTED) { | |
2193 | switch (stli_comstats.hwid) { | |
4ac4360b AC |
2194 | case 0: uart = "2681"; break; |
2195 | case 1: uart = "SC26198"; break; | |
2196 | default:uart = "CD1400"; break; | |
1da177e4 LT |
2197 | } |
2198 | } | |
2199 | ||
2200 | sp = pos; | |
2201 | sp += sprintf(sp, "%d: uart:%s ", portnr, uart); | |
2202 | ||
2203 | if ((brdp->state & BST_STARTED) && (rc >= 0)) { | |
2204 | sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal, | |
2205 | (int) stli_comstats.rxtotal); | |
2206 | ||
2207 | if (stli_comstats.rxframing) | |
2208 | sp += sprintf(sp, " fe:%d", | |
2209 | (int) stli_comstats.rxframing); | |
2210 | if (stli_comstats.rxparity) | |
2211 | sp += sprintf(sp, " pe:%d", | |
2212 | (int) stli_comstats.rxparity); | |
2213 | if (stli_comstats.rxbreaks) | |
2214 | sp += sprintf(sp, " brk:%d", | |
2215 | (int) stli_comstats.rxbreaks); | |
2216 | if (stli_comstats.rxoverrun) | |
2217 | sp += sprintf(sp, " oe:%d", | |
2218 | (int) stli_comstats.rxoverrun); | |
2219 | ||
2220 | cnt = sprintf(sp, "%s%s%s%s%s ", | |
2221 | (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "", | |
2222 | (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "", | |
2223 | (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "", | |
2224 | (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "", | |
2225 | (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : ""); | |
2226 | *sp = ' '; | |
2227 | sp += cnt; | |
2228 | } | |
2229 | ||
2230 | for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++) | |
2231 | *sp++ = ' '; | |
2232 | if (cnt >= MAXLINE) | |
2233 | pos[(MAXLINE - 2)] = '+'; | |
2234 | pos[(MAXLINE - 1)] = '\n'; | |
2235 | ||
2236 | return(MAXLINE); | |
2237 | } | |
2238 | ||
2239 | /*****************************************************************************/ | |
2240 | ||
2241 | /* | |
2242 | * Port info, read from the /proc file system. | |
2243 | */ | |
2244 | ||
2245 | static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data) | |
2246 | { | |
4ac4360b AC |
2247 | stlibrd_t *brdp; |
2248 | stliport_t *portp; | |
2249 | int brdnr, portnr, totalport; | |
2250 | int curoff, maxoff; | |
2251 | char *pos; | |
1da177e4 LT |
2252 | |
2253 | pos = page; | |
2254 | totalport = 0; | |
2255 | curoff = 0; | |
2256 | ||
2257 | if (off == 0) { | |
2258 | pos += sprintf(pos, "%s: version %s", stli_drvtitle, | |
2259 | stli_drvversion); | |
2260 | while (pos < (page + MAXLINE - 1)) | |
2261 | *pos++ = ' '; | |
2262 | *pos++ = '\n'; | |
2263 | } | |
2264 | curoff = MAXLINE; | |
2265 | ||
2266 | /* | |
2267 | * We scan through for each board, panel and port. The offset is | |
2268 | * calculated on the fly, and irrelevant ports are skipped. | |
2269 | */ | |
2270 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2271 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2272 | if (brdp == NULL) |
1da177e4 LT |
2273 | continue; |
2274 | if (brdp->state == 0) | |
2275 | continue; | |
2276 | ||
2277 | maxoff = curoff + (brdp->nrports * MAXLINE); | |
2278 | if (off >= maxoff) { | |
2279 | curoff = maxoff; | |
2280 | continue; | |
2281 | } | |
2282 | ||
2283 | totalport = brdnr * STL_MAXPORTS; | |
2284 | for (portnr = 0; (portnr < brdp->nrports); portnr++, | |
2285 | totalport++) { | |
2286 | portp = brdp->ports[portnr]; | |
4ac4360b | 2287 | if (portp == NULL) |
1da177e4 LT |
2288 | continue; |
2289 | if (off >= (curoff += MAXLINE)) | |
2290 | continue; | |
2291 | if ((pos - page + MAXLINE) > count) | |
2292 | goto stli_readdone; | |
2293 | pos += stli_portinfo(brdp, portp, totalport, pos); | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | *eof = 1; | |
2298 | ||
2299 | stli_readdone: | |
2300 | *start = page; | |
2301 | return(pos - page); | |
2302 | } | |
2303 | ||
2304 | /*****************************************************************************/ | |
2305 | ||
2306 | /* | |
2307 | * Generic send command routine. This will send a message to the slave, | |
2308 | * of the specified type with the specified argument. Must be very | |
2309 | * careful of data that will be copied out from shared memory - | |
2310 | * containing command results. The command completion is all done from | |
2311 | * a poll routine that does not have user context. Therefore you cannot | |
2312 | * copy back directly into user space, or to the kernel stack of a | |
2313 | * process. This routine does not sleep, so can be called from anywhere. | |
4ac4360b AC |
2314 | * |
2315 | * The caller must hold the brd_lock (see also stli_sendcmd the usual | |
2316 | * entry point) | |
1da177e4 LT |
2317 | */ |
2318 | ||
4ac4360b | 2319 | static void __stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 2320 | { |
4ac4360b AC |
2321 | cdkhdr_t __iomem *hdrp; |
2322 | cdkctrl_t __iomem *cp; | |
2323 | unsigned char __iomem *bits; | |
2324 | unsigned long flags; | |
1da177e4 | 2325 | |
4ac4360b | 2326 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
2327 | |
2328 | if (test_bit(ST_CMDING, &portp->state)) { | |
2329 | printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n", | |
2330 | (int) cmd); | |
4ac4360b | 2331 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
2332 | return; |
2333 | } | |
2334 | ||
2335 | EBRDENABLE(brdp); | |
4ac4360b | 2336 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1da177e4 | 2337 | if (size > 0) { |
4ac4360b | 2338 | memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); |
1da177e4 LT |
2339 | if (copyback) { |
2340 | portp->argp = arg; | |
2341 | portp->argsize = size; | |
2342 | } | |
2343 | } | |
4ac4360b AC |
2344 | writel(0, &cp->status); |
2345 | writel(cmd, &cp->cmd); | |
2346 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
2347 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 2348 | portp->portidx; |
4ac4360b | 2349 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
2350 | set_bit(ST_CMDING, &portp->state); |
2351 | EBRDDISABLE(brdp); | |
4ac4360b AC |
2352 | spin_unlock_irqrestore(&brd_lock, flags); |
2353 | } | |
2354 | ||
2355 | static void stli_sendcmd(stlibrd_t *brdp, stliport_t *portp, unsigned long cmd, void *arg, int size, int copyback) | |
2356 | { | |
2357 | unsigned long flags; | |
2358 | ||
2359 | spin_lock_irqsave(&brd_lock, flags); | |
2360 | __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
2361 | spin_unlock_irqrestore(&brd_lock, flags); | |
1da177e4 LT |
2362 | } |
2363 | ||
2364 | /*****************************************************************************/ | |
2365 | ||
2366 | /* | |
2367 | * Read data from shared memory. This assumes that the shared memory | |
2368 | * is enabled and that interrupts are off. Basically we just empty out | |
2369 | * the shared memory buffer into the tty buffer. Must be careful to | |
2370 | * handle the case where we fill up the tty buffer, but still have | |
2371 | * more chars to unload. | |
2372 | */ | |
2373 | ||
2374 | static void stli_read(stlibrd_t *brdp, stliport_t *portp) | |
2375 | { | |
4ac4360b AC |
2376 | cdkasyrq_t __iomem *rp; |
2377 | char __iomem *shbuf; | |
1da177e4 | 2378 | struct tty_struct *tty; |
4ac4360b AC |
2379 | unsigned int head, tail, size; |
2380 | unsigned int len, stlen; | |
1da177e4 LT |
2381 | |
2382 | if (test_bit(ST_RXSTOP, &portp->state)) | |
2383 | return; | |
2384 | tty = portp->tty; | |
4ac4360b | 2385 | if (tty == NULL) |
1da177e4 LT |
2386 | return; |
2387 | ||
4ac4360b AC |
2388 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2389 | head = (unsigned int) readw(&rp->head); | |
2390 | if (head != ((unsigned int) readw(&rp->head))) | |
2391 | head = (unsigned int) readw(&rp->head); | |
2392 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
2393 | size = portp->rxsize; |
2394 | if (head >= tail) { | |
2395 | len = head - tail; | |
2396 | stlen = len; | |
2397 | } else { | |
2398 | len = size - (tail - head); | |
2399 | stlen = size - tail; | |
2400 | } | |
2401 | ||
33f0f88f | 2402 | len = tty_buffer_request_room(tty, len); |
4ac4360b AC |
2403 | |
2404 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); | |
1da177e4 LT |
2405 | |
2406 | while (len > 0) { | |
4ac4360b AC |
2407 | unsigned char *cptr; |
2408 | ||
1da177e4 | 2409 | stlen = MIN(len, stlen); |
4ac4360b AC |
2410 | tty_prepare_flip_string(tty, &cptr, stlen); |
2411 | memcpy_fromio(cptr, shbuf + tail, stlen); | |
1da177e4 LT |
2412 | len -= stlen; |
2413 | tail += stlen; | |
2414 | if (tail >= size) { | |
2415 | tail = 0; | |
2416 | stlen = head; | |
2417 | } | |
2418 | } | |
4ac4360b AC |
2419 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2420 | writew(tail, &rp->tail); | |
1da177e4 LT |
2421 | |
2422 | if (head != tail) | |
2423 | set_bit(ST_RXING, &portp->state); | |
2424 | ||
2425 | tty_schedule_flip(tty); | |
2426 | } | |
2427 | ||
2428 | /*****************************************************************************/ | |
2429 | ||
2430 | /* | |
2431 | * Set up and carry out any delayed commands. There is only a small set | |
2432 | * of slave commands that can be done "off-level". So it is not too | |
2433 | * difficult to deal with them here. | |
2434 | */ | |
2435 | ||
4ac4360b | 2436 | static void stli_dodelaycmd(stliport_t *portp, cdkctrl_t __iomem *cp) |
1da177e4 | 2437 | { |
4ac4360b | 2438 | int cmd; |
1da177e4 LT |
2439 | |
2440 | if (test_bit(ST_DOSIGS, &portp->state)) { | |
2441 | if (test_bit(ST_DOFLUSHTX, &portp->state) && | |
2442 | test_bit(ST_DOFLUSHRX, &portp->state)) | |
2443 | cmd = A_SETSIGNALSF; | |
2444 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) | |
2445 | cmd = A_SETSIGNALSFTX; | |
2446 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) | |
2447 | cmd = A_SETSIGNALSFRX; | |
2448 | else | |
2449 | cmd = A_SETSIGNALS; | |
2450 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2451 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2452 | clear_bit(ST_DOSIGS, &portp->state); | |
4ac4360b | 2453 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, |
1da177e4 | 2454 | sizeof(asysigs_t)); |
4ac4360b AC |
2455 | writel(0, &cp->status); |
2456 | writel(cmd, &cp->cmd); | |
1da177e4 LT |
2457 | set_bit(ST_CMDING, &portp->state); |
2458 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || | |
2459 | test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2460 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); | |
2461 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); | |
2462 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2463 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
4ac4360b AC |
2464 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); |
2465 | writel(0, &cp->status); | |
2466 | writel(A_FLUSH, &cp->cmd); | |
1da177e4 LT |
2467 | set_bit(ST_CMDING, &portp->state); |
2468 | } | |
2469 | } | |
2470 | ||
2471 | /*****************************************************************************/ | |
2472 | ||
2473 | /* | |
2474 | * Host command service checking. This handles commands or messages | |
2475 | * coming from the slave to the host. Must have board shared memory | |
2476 | * enabled and interrupts off when called. Notice that by servicing the | |
2477 | * read data last we don't need to change the shared memory pointer | |
2478 | * during processing (which is a slow IO operation). | |
2479 | * Return value indicates if this port is still awaiting actions from | |
2480 | * the slave (like open, command, or even TX data being sent). If 0 | |
2481 | * then port is still busy, otherwise no longer busy. | |
2482 | */ | |
2483 | ||
2484 | static int stli_hostcmd(stlibrd_t *brdp, stliport_t *portp) | |
2485 | { | |
4ac4360b AC |
2486 | cdkasy_t __iomem *ap; |
2487 | cdkctrl_t __iomem *cp; | |
2488 | struct tty_struct *tty; | |
2489 | asynotify_t nt; | |
2490 | unsigned long oldsigs; | |
2491 | int rc, donerx; | |
2492 | ||
2493 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); | |
1da177e4 LT |
2494 | cp = &ap->ctrl; |
2495 | ||
2496 | /* | |
2497 | * Check if we are waiting for an open completion message. | |
2498 | */ | |
2499 | if (test_bit(ST_OPENING, &portp->state)) { | |
4ac4360b AC |
2500 | rc = readl(&cp->openarg); |
2501 | if (readb(&cp->open) == 0 && rc != 0) { | |
1da177e4 LT |
2502 | if (rc > 0) |
2503 | rc--; | |
4ac4360b | 2504 | writel(0, &cp->openarg); |
1da177e4 LT |
2505 | portp->rc = rc; |
2506 | clear_bit(ST_OPENING, &portp->state); | |
2507 | wake_up_interruptible(&portp->raw_wait); | |
2508 | } | |
2509 | } | |
2510 | ||
2511 | /* | |
2512 | * Check if we are waiting for a close completion message. | |
2513 | */ | |
2514 | if (test_bit(ST_CLOSING, &portp->state)) { | |
4ac4360b AC |
2515 | rc = (int) readl(&cp->closearg); |
2516 | if (readb(&cp->close) == 0 && rc != 0) { | |
1da177e4 LT |
2517 | if (rc > 0) |
2518 | rc--; | |
4ac4360b | 2519 | writel(0, &cp->closearg); |
1da177e4 LT |
2520 | portp->rc = rc; |
2521 | clear_bit(ST_CLOSING, &portp->state); | |
2522 | wake_up_interruptible(&portp->raw_wait); | |
2523 | } | |
2524 | } | |
2525 | ||
2526 | /* | |
2527 | * Check if we are waiting for a command completion message. We may | |
2528 | * need to copy out the command results associated with this command. | |
2529 | */ | |
2530 | if (test_bit(ST_CMDING, &portp->state)) { | |
4ac4360b AC |
2531 | rc = readl(&cp->status); |
2532 | if (readl(&cp->cmd) == 0 && rc != 0) { | |
1da177e4 LT |
2533 | if (rc > 0) |
2534 | rc--; | |
4ac4360b AC |
2535 | if (portp->argp != NULL) { |
2536 | memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), | |
1da177e4 | 2537 | portp->argsize); |
4ac4360b | 2538 | portp->argp = NULL; |
1da177e4 | 2539 | } |
4ac4360b | 2540 | writel(0, &cp->status); |
1da177e4 LT |
2541 | portp->rc = rc; |
2542 | clear_bit(ST_CMDING, &portp->state); | |
2543 | stli_dodelaycmd(portp, cp); | |
2544 | wake_up_interruptible(&portp->raw_wait); | |
2545 | } | |
2546 | } | |
2547 | ||
2548 | /* | |
2549 | * Check for any notification messages ready. This includes lots of | |
2550 | * different types of events - RX chars ready, RX break received, | |
2551 | * TX data low or empty in the slave, modem signals changed state. | |
2552 | */ | |
2553 | donerx = 0; | |
2554 | ||
2555 | if (ap->notify) { | |
2556 | nt = ap->changed; | |
2557 | ap->notify = 0; | |
2558 | tty = portp->tty; | |
2559 | ||
2560 | if (nt.signal & SG_DCD) { | |
2561 | oldsigs = portp->sigs; | |
2562 | portp->sigs = stli_mktiocm(nt.sigvalue); | |
2563 | clear_bit(ST_GETSIGS, &portp->state); | |
2564 | if ((portp->sigs & TIOCM_CD) && | |
2565 | ((oldsigs & TIOCM_CD) == 0)) | |
2566 | wake_up_interruptible(&portp->open_wait); | |
2567 | if ((oldsigs & TIOCM_CD) && | |
2568 | ((portp->sigs & TIOCM_CD) == 0)) { | |
2569 | if (portp->flags & ASYNC_CHECK_CD) { | |
2570 | if (tty) | |
2571 | schedule_work(&portp->tqhangup); | |
2572 | } | |
2573 | } | |
2574 | } | |
2575 | ||
2576 | if (nt.data & DT_TXEMPTY) | |
2577 | clear_bit(ST_TXBUSY, &portp->state); | |
2578 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { | |
4ac4360b AC |
2579 | if (tty != NULL) { |
2580 | tty_wakeup(tty); | |
2581 | EBRDENABLE(brdp); | |
1da177e4 LT |
2582 | wake_up_interruptible(&tty->write_wait); |
2583 | } | |
2584 | } | |
2585 | ||
2586 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { | |
4ac4360b | 2587 | if (tty != NULL) { |
33f0f88f AC |
2588 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
2589 | if (portp->flags & ASYNC_SAK) { | |
2590 | do_SAK(tty); | |
2591 | EBRDENABLE(brdp); | |
1da177e4 | 2592 | } |
33f0f88f | 2593 | tty_schedule_flip(tty); |
1da177e4 LT |
2594 | } |
2595 | } | |
2596 | ||
2597 | if (nt.data & DT_RXBUSY) { | |
2598 | donerx++; | |
2599 | stli_read(brdp, portp); | |
2600 | } | |
2601 | } | |
2602 | ||
2603 | /* | |
2604 | * It might seem odd that we are checking for more RX chars here. | |
2605 | * But, we need to handle the case where the tty buffer was previously | |
2606 | * filled, but we had more characters to pass up. The slave will not | |
2607 | * send any more RX notify messages until the RX buffer has been emptied. | |
2608 | * But it will leave the service bits on (since the buffer is not empty). | |
2609 | * So from here we can try to process more RX chars. | |
2610 | */ | |
2611 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { | |
2612 | clear_bit(ST_RXING, &portp->state); | |
2613 | stli_read(brdp, portp); | |
2614 | } | |
2615 | ||
2616 | return((test_bit(ST_OPENING, &portp->state) || | |
2617 | test_bit(ST_CLOSING, &portp->state) || | |
2618 | test_bit(ST_CMDING, &portp->state) || | |
2619 | test_bit(ST_TXBUSY, &portp->state) || | |
2620 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); | |
2621 | } | |
2622 | ||
2623 | /*****************************************************************************/ | |
2624 | ||
2625 | /* | |
2626 | * Service all ports on a particular board. Assumes that the boards | |
2627 | * shared memory is enabled, and that the page pointer is pointed | |
2628 | * at the cdk header structure. | |
2629 | */ | |
2630 | ||
4ac4360b | 2631 | static void stli_brdpoll(stlibrd_t *brdp, cdkhdr_t __iomem *hdrp) |
1da177e4 | 2632 | { |
4ac4360b AC |
2633 | stliport_t *portp; |
2634 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; | |
2635 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; | |
2636 | unsigned char __iomem *slavep; | |
2637 | int bitpos, bitat, bitsize; | |
2638 | int channr, nrdevs, slavebitchange; | |
1da177e4 LT |
2639 | |
2640 | bitsize = brdp->bitsize; | |
2641 | nrdevs = brdp->nrdevs; | |
2642 | ||
2643 | /* | |
2644 | * Check if slave wants any service. Basically we try to do as | |
2645 | * little work as possible here. There are 2 levels of service | |
2646 | * bits. So if there is nothing to do we bail early. We check | |
2647 | * 8 service bits at a time in the inner loop, so we can bypass | |
2648 | * the lot if none of them want service. | |
2649 | */ | |
4ac4360b | 2650 | memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), |
1da177e4 LT |
2651 | bitsize); |
2652 | ||
2653 | memset(&slavebits[0], 0, bitsize); | |
2654 | slavebitchange = 0; | |
2655 | ||
2656 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
2657 | if (hostbits[bitpos] == 0) | |
2658 | continue; | |
2659 | channr = bitpos * 8; | |
2660 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { | |
2661 | if (hostbits[bitpos] & bitat) { | |
2662 | portp = brdp->ports[(channr - 1)]; | |
2663 | if (stli_hostcmd(brdp, portp)) { | |
2664 | slavebitchange++; | |
2665 | slavebits[bitpos] |= bitat; | |
2666 | } | |
2667 | } | |
2668 | } | |
2669 | } | |
2670 | ||
2671 | /* | |
2672 | * If any of the ports are no longer busy then update them in the | |
2673 | * slave request bits. We need to do this after, since a host port | |
2674 | * service may initiate more slave requests. | |
2675 | */ | |
2676 | if (slavebitchange) { | |
4ac4360b AC |
2677 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2678 | slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; | |
1da177e4 | 2679 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
4ac4360b AC |
2680 | if (readb(slavebits + bitpos)) |
2681 | writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); | |
1da177e4 LT |
2682 | } |
2683 | } | |
2684 | } | |
2685 | ||
2686 | /*****************************************************************************/ | |
2687 | ||
2688 | /* | |
2689 | * Driver poll routine. This routine polls the boards in use and passes | |
2690 | * messages back up to host when necessary. This is actually very | |
2691 | * CPU efficient, since we will always have the kernel poll clock, it | |
2692 | * adds only a few cycles when idle (since board service can be | |
2693 | * determined very easily), but when loaded generates no interrupts | |
2694 | * (with their expensive associated context change). | |
2695 | */ | |
2696 | ||
2697 | static void stli_poll(unsigned long arg) | |
2698 | { | |
4ac4360b AC |
2699 | cdkhdr_t __iomem *hdrp; |
2700 | stlibrd_t *brdp; | |
2701 | int brdnr; | |
1da177e4 LT |
2702 | |
2703 | stli_timerlist.expires = STLI_TIMEOUT; | |
2704 | add_timer(&stli_timerlist); | |
2705 | ||
2706 | /* | |
2707 | * Check each board and do any servicing required. | |
2708 | */ | |
2709 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2710 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2711 | if (brdp == NULL) |
1da177e4 LT |
2712 | continue; |
2713 | if ((brdp->state & BST_STARTED) == 0) | |
2714 | continue; | |
2715 | ||
4ac4360b | 2716 | spin_lock(&brd_lock); |
1da177e4 | 2717 | EBRDENABLE(brdp); |
4ac4360b AC |
2718 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2719 | if (readb(&hdrp->hostreq)) | |
1da177e4 LT |
2720 | stli_brdpoll(brdp, hdrp); |
2721 | EBRDDISABLE(brdp); | |
4ac4360b | 2722 | spin_unlock(&brd_lock); |
1da177e4 LT |
2723 | } |
2724 | } | |
2725 | ||
2726 | /*****************************************************************************/ | |
2727 | ||
2728 | /* | |
2729 | * Translate the termios settings into the port setting structure of | |
2730 | * the slave. | |
2731 | */ | |
2732 | ||
2733 | static void stli_mkasyport(stliport_t *portp, asyport_t *pp, struct termios *tiosp) | |
2734 | { | |
1da177e4 LT |
2735 | memset(pp, 0, sizeof(asyport_t)); |
2736 | ||
2737 | /* | |
2738 | * Start of by setting the baud, char size, parity and stop bit info. | |
2739 | */ | |
1db27c11 | 2740 | pp->baudout = tty_get_baud_rate(portp->tty); |
1da177e4 LT |
2741 | if ((tiosp->c_cflag & CBAUD) == B38400) { |
2742 | if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
2743 | pp->baudout = 57600; | |
2744 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2745 | pp->baudout = 115200; | |
2746 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2747 | pp->baudout = 230400; | |
2748 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2749 | pp->baudout = 460800; | |
2750 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) | |
2751 | pp->baudout = (portp->baud_base / portp->custom_divisor); | |
2752 | } | |
2753 | if (pp->baudout > STL_MAXBAUD) | |
2754 | pp->baudout = STL_MAXBAUD; | |
2755 | pp->baudin = pp->baudout; | |
2756 | ||
2757 | switch (tiosp->c_cflag & CSIZE) { | |
2758 | case CS5: | |
2759 | pp->csize = 5; | |
2760 | break; | |
2761 | case CS6: | |
2762 | pp->csize = 6; | |
2763 | break; | |
2764 | case CS7: | |
2765 | pp->csize = 7; | |
2766 | break; | |
2767 | default: | |
2768 | pp->csize = 8; | |
2769 | break; | |
2770 | } | |
2771 | ||
2772 | if (tiosp->c_cflag & CSTOPB) | |
2773 | pp->stopbs = PT_STOP2; | |
2774 | else | |
2775 | pp->stopbs = PT_STOP1; | |
2776 | ||
2777 | if (tiosp->c_cflag & PARENB) { | |
2778 | if (tiosp->c_cflag & PARODD) | |
2779 | pp->parity = PT_ODDPARITY; | |
2780 | else | |
2781 | pp->parity = PT_EVENPARITY; | |
2782 | } else { | |
2783 | pp->parity = PT_NOPARITY; | |
2784 | } | |
2785 | ||
2786 | /* | |
2787 | * Set up any flow control options enabled. | |
2788 | */ | |
2789 | if (tiosp->c_iflag & IXON) { | |
2790 | pp->flow |= F_IXON; | |
2791 | if (tiosp->c_iflag & IXANY) | |
2792 | pp->flow |= F_IXANY; | |
2793 | } | |
2794 | if (tiosp->c_cflag & CRTSCTS) | |
2795 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); | |
2796 | ||
2797 | pp->startin = tiosp->c_cc[VSTART]; | |
2798 | pp->stopin = tiosp->c_cc[VSTOP]; | |
2799 | pp->startout = tiosp->c_cc[VSTART]; | |
2800 | pp->stopout = tiosp->c_cc[VSTOP]; | |
2801 | ||
2802 | /* | |
2803 | * Set up the RX char marking mask with those RX error types we must | |
2804 | * catch. We can get the slave to help us out a little here, it will | |
2805 | * ignore parity errors and breaks for us, and mark parity errors in | |
2806 | * the data stream. | |
2807 | */ | |
2808 | if (tiosp->c_iflag & IGNPAR) | |
2809 | pp->iflag |= FI_IGNRXERRS; | |
2810 | if (tiosp->c_iflag & IGNBRK) | |
2811 | pp->iflag |= FI_IGNBREAK; | |
2812 | ||
2813 | portp->rxmarkmsk = 0; | |
2814 | if (tiosp->c_iflag & (INPCK | PARMRK)) | |
2815 | pp->iflag |= FI_1MARKRXERRS; | |
2816 | if (tiosp->c_iflag & BRKINT) | |
2817 | portp->rxmarkmsk |= BRKINT; | |
2818 | ||
2819 | /* | |
2820 | * Set up clocal processing as required. | |
2821 | */ | |
2822 | if (tiosp->c_cflag & CLOCAL) | |
2823 | portp->flags &= ~ASYNC_CHECK_CD; | |
2824 | else | |
2825 | portp->flags |= ASYNC_CHECK_CD; | |
2826 | ||
2827 | /* | |
2828 | * Transfer any persistent flags into the asyport structure. | |
2829 | */ | |
2830 | pp->pflag = (portp->pflag & 0xffff); | |
2831 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; | |
2832 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; | |
2833 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; | |
2834 | } | |
2835 | ||
2836 | /*****************************************************************************/ | |
2837 | ||
2838 | /* | |
2839 | * Construct a slave signals structure for setting the DTR and RTS | |
2840 | * signals as specified. | |
2841 | */ | |
2842 | ||
2843 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) | |
2844 | { | |
1da177e4 LT |
2845 | memset(sp, 0, sizeof(asysigs_t)); |
2846 | if (dtr >= 0) { | |
2847 | sp->signal |= SG_DTR; | |
2848 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); | |
2849 | } | |
2850 | if (rts >= 0) { | |
2851 | sp->signal |= SG_RTS; | |
2852 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); | |
2853 | } | |
2854 | } | |
2855 | ||
2856 | /*****************************************************************************/ | |
2857 | ||
2858 | /* | |
2859 | * Convert the signals returned from the slave into a local TIOCM type | |
2860 | * signals value. We keep them locally in TIOCM format. | |
2861 | */ | |
2862 | ||
2863 | static long stli_mktiocm(unsigned long sigvalue) | |
2864 | { | |
4ac4360b | 2865 | long tiocm = 0; |
1da177e4 LT |
2866 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); |
2867 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); | |
2868 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); | |
2869 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); | |
2870 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); | |
2871 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); | |
2872 | return(tiocm); | |
2873 | } | |
2874 | ||
2875 | /*****************************************************************************/ | |
2876 | ||
2877 | /* | |
2878 | * All panels and ports actually attached have been worked out. All | |
2879 | * we need to do here is set up the appropriate per port data structures. | |
2880 | */ | |
2881 | ||
2882 | static int stli_initports(stlibrd_t *brdp) | |
2883 | { | |
2884 | stliport_t *portp; | |
2885 | int i, panelnr, panelport; | |
2886 | ||
1da177e4 | 2887 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { |
b0b4ed72 TK |
2888 | portp = kzalloc(sizeof(stliport_t), GFP_KERNEL); |
2889 | if (!portp) { | |
1da177e4 LT |
2890 | printk("STALLION: failed to allocate port structure\n"); |
2891 | continue; | |
2892 | } | |
2893 | ||
1da177e4 LT |
2894 | portp->magic = STLI_PORTMAGIC; |
2895 | portp->portnr = i; | |
2896 | portp->brdnr = brdp->brdnr; | |
2897 | portp->panelnr = panelnr; | |
2898 | portp->baud_base = STL_BAUDBASE; | |
2899 | portp->close_delay = STL_CLOSEDELAY; | |
2900 | portp->closing_wait = 30 * HZ; | |
2901 | INIT_WORK(&portp->tqhangup, stli_dohangup, portp); | |
2902 | init_waitqueue_head(&portp->open_wait); | |
2903 | init_waitqueue_head(&portp->close_wait); | |
2904 | init_waitqueue_head(&portp->raw_wait); | |
2905 | panelport++; | |
2906 | if (panelport >= brdp->panels[panelnr]) { | |
2907 | panelport = 0; | |
2908 | panelnr++; | |
2909 | } | |
2910 | brdp->ports[i] = portp; | |
2911 | } | |
2912 | ||
4ac4360b | 2913 | return 0; |
1da177e4 LT |
2914 | } |
2915 | ||
2916 | /*****************************************************************************/ | |
2917 | ||
2918 | /* | |
2919 | * All the following routines are board specific hardware operations. | |
2920 | */ | |
2921 | ||
2922 | static void stli_ecpinit(stlibrd_t *brdp) | |
2923 | { | |
2924 | unsigned long memconf; | |
2925 | ||
1da177e4 LT |
2926 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2927 | udelay(10); | |
2928 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2929 | udelay(100); | |
2930 | ||
2931 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; | |
2932 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); | |
2933 | } | |
2934 | ||
2935 | /*****************************************************************************/ | |
2936 | ||
2937 | static void stli_ecpenable(stlibrd_t *brdp) | |
2938 | { | |
1da177e4 LT |
2939 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); |
2940 | } | |
2941 | ||
2942 | /*****************************************************************************/ | |
2943 | ||
2944 | static void stli_ecpdisable(stlibrd_t *brdp) | |
2945 | { | |
1da177e4 LT |
2946 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
2947 | } | |
2948 | ||
2949 | /*****************************************************************************/ | |
2950 | ||
2951 | static char *stli_ecpgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
2952 | { | |
4ac4360b AC |
2953 | void *ptr; |
2954 | unsigned char val; | |
1da177e4 LT |
2955 | |
2956 | if (offset > brdp->memsize) { | |
2957 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
2958 | "range at line=%d(%d), brd=%d\n", | |
2959 | (int) offset, line, __LINE__, brdp->brdnr); | |
2960 | ptr = NULL; | |
2961 | val = 0; | |
2962 | } else { | |
2963 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); | |
2964 | val = (unsigned char) (offset / ECP_ATPAGESIZE); | |
2965 | } | |
2966 | outb(val, (brdp->iobase + ECP_ATMEMPR)); | |
2967 | return(ptr); | |
2968 | } | |
2969 | ||
2970 | /*****************************************************************************/ | |
2971 | ||
2972 | static void stli_ecpreset(stlibrd_t *brdp) | |
2973 | { | |
1da177e4 LT |
2974 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2975 | udelay(10); | |
2976 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2977 | udelay(500); | |
2978 | } | |
2979 | ||
2980 | /*****************************************************************************/ | |
2981 | ||
2982 | static void stli_ecpintr(stlibrd_t *brdp) | |
2983 | { | |
1da177e4 LT |
2984 | outb(0x1, brdp->iobase); |
2985 | } | |
2986 | ||
2987 | /*****************************************************************************/ | |
2988 | ||
2989 | /* | |
2990 | * The following set of functions act on ECP EISA boards. | |
2991 | */ | |
2992 | ||
2993 | static void stli_ecpeiinit(stlibrd_t *brdp) | |
2994 | { | |
2995 | unsigned long memconf; | |
2996 | ||
1da177e4 LT |
2997 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
2998 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2999 | udelay(10); | |
3000 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3001 | udelay(500); | |
3002 | ||
3003 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; | |
3004 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); | |
3005 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; | |
3006 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); | |
3007 | } | |
3008 | ||
3009 | /*****************************************************************************/ | |
3010 | ||
3011 | static void stli_ecpeienable(stlibrd_t *brdp) | |
3012 | { | |
3013 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); | |
3014 | } | |
3015 | ||
3016 | /*****************************************************************************/ | |
3017 | ||
3018 | static void stli_ecpeidisable(stlibrd_t *brdp) | |
3019 | { | |
3020 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3021 | } | |
3022 | ||
3023 | /*****************************************************************************/ | |
3024 | ||
3025 | static char *stli_ecpeigetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3026 | { | |
3027 | void *ptr; | |
3028 | unsigned char val; | |
3029 | ||
1da177e4 LT |
3030 | if (offset > brdp->memsize) { |
3031 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3032 | "range at line=%d(%d), brd=%d\n", | |
3033 | (int) offset, line, __LINE__, brdp->brdnr); | |
3034 | ptr = NULL; | |
3035 | val = 0; | |
3036 | } else { | |
3037 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); | |
3038 | if (offset < ECP_EIPAGESIZE) | |
3039 | val = ECP_EIENABLE; | |
3040 | else | |
3041 | val = ECP_EIENABLE | 0x40; | |
3042 | } | |
3043 | outb(val, (brdp->iobase + ECP_EICONFR)); | |
3044 | return(ptr); | |
3045 | } | |
3046 | ||
3047 | /*****************************************************************************/ | |
3048 | ||
3049 | static void stli_ecpeireset(stlibrd_t *brdp) | |
3050 | { | |
3051 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3052 | udelay(10); | |
3053 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3054 | udelay(500); | |
3055 | } | |
3056 | ||
3057 | /*****************************************************************************/ | |
3058 | ||
3059 | /* | |
3060 | * The following set of functions act on ECP MCA boards. | |
3061 | */ | |
3062 | ||
3063 | static void stli_ecpmcenable(stlibrd_t *brdp) | |
3064 | { | |
3065 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); | |
3066 | } | |
3067 | ||
3068 | /*****************************************************************************/ | |
3069 | ||
3070 | static void stli_ecpmcdisable(stlibrd_t *brdp) | |
3071 | { | |
3072 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
3073 | } | |
3074 | ||
3075 | /*****************************************************************************/ | |
3076 | ||
3077 | static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3078 | { | |
4ac4360b AC |
3079 | void *ptr; |
3080 | unsigned char val; | |
1da177e4 LT |
3081 | |
3082 | if (offset > brdp->memsize) { | |
3083 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3084 | "range at line=%d(%d), brd=%d\n", | |
3085 | (int) offset, line, __LINE__, brdp->brdnr); | |
3086 | ptr = NULL; | |
3087 | val = 0; | |
3088 | } else { | |
3089 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); | |
3090 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; | |
3091 | } | |
3092 | outb(val, (brdp->iobase + ECP_MCCONFR)); | |
3093 | return(ptr); | |
3094 | } | |
3095 | ||
3096 | /*****************************************************************************/ | |
3097 | ||
3098 | static void stli_ecpmcreset(stlibrd_t *brdp) | |
3099 | { | |
3100 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); | |
3101 | udelay(10); | |
3102 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
3103 | udelay(500); | |
3104 | } | |
3105 | ||
3106 | /*****************************************************************************/ | |
3107 | ||
3108 | /* | |
3109 | * The following set of functions act on ECP PCI boards. | |
3110 | */ | |
3111 | ||
3112 | static void stli_ecppciinit(stlibrd_t *brdp) | |
3113 | { | |
1da177e4 LT |
3114 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
3115 | udelay(10); | |
3116 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
3117 | udelay(500); | |
3118 | } | |
3119 | ||
3120 | /*****************************************************************************/ | |
3121 | ||
3122 | static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3123 | { | |
3124 | void *ptr; | |
3125 | unsigned char val; | |
3126 | ||
1da177e4 LT |
3127 | if (offset > brdp->memsize) { |
3128 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3129 | "range at line=%d(%d), board=%d\n", | |
3130 | (int) offset, line, __LINE__, brdp->brdnr); | |
3131 | ptr = NULL; | |
3132 | val = 0; | |
3133 | } else { | |
3134 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); | |
3135 | val = (offset / ECP_PCIPAGESIZE) << 1; | |
3136 | } | |
3137 | outb(val, (brdp->iobase + ECP_PCICONFR)); | |
3138 | return(ptr); | |
3139 | } | |
3140 | ||
3141 | /*****************************************************************************/ | |
3142 | ||
3143 | static void stli_ecppcireset(stlibrd_t *brdp) | |
3144 | { | |
3145 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
3146 | udelay(10); | |
3147 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
3148 | udelay(500); | |
3149 | } | |
3150 | ||
3151 | /*****************************************************************************/ | |
3152 | ||
3153 | /* | |
3154 | * The following routines act on ONboards. | |
3155 | */ | |
3156 | ||
3157 | static void stli_onbinit(stlibrd_t *brdp) | |
3158 | { | |
3159 | unsigned long memconf; | |
3160 | ||
1da177e4 LT |
3161 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
3162 | udelay(10); | |
3163 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
3164 | mdelay(1000); | |
3165 | ||
3166 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; | |
3167 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); | |
3168 | outb(0x1, brdp->iobase); | |
3169 | mdelay(1); | |
3170 | } | |
3171 | ||
3172 | /*****************************************************************************/ | |
3173 | ||
3174 | static void stli_onbenable(stlibrd_t *brdp) | |
3175 | { | |
1da177e4 LT |
3176 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); |
3177 | } | |
3178 | ||
3179 | /*****************************************************************************/ | |
3180 | ||
3181 | static void stli_onbdisable(stlibrd_t *brdp) | |
3182 | { | |
1da177e4 LT |
3183 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); |
3184 | } | |
3185 | ||
3186 | /*****************************************************************************/ | |
3187 | ||
3188 | static char *stli_onbgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3189 | { | |
3190 | void *ptr; | |
3191 | ||
1da177e4 LT |
3192 | if (offset > brdp->memsize) { |
3193 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3194 | "range at line=%d(%d), brd=%d\n", | |
3195 | (int) offset, line, __LINE__, brdp->brdnr); | |
3196 | ptr = NULL; | |
3197 | } else { | |
3198 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); | |
3199 | } | |
3200 | return(ptr); | |
3201 | } | |
3202 | ||
3203 | /*****************************************************************************/ | |
3204 | ||
3205 | static void stli_onbreset(stlibrd_t *brdp) | |
3206 | { | |
1da177e4 LT |
3207 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
3208 | udelay(10); | |
3209 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
3210 | mdelay(1000); | |
3211 | } | |
3212 | ||
3213 | /*****************************************************************************/ | |
3214 | ||
3215 | /* | |
3216 | * The following routines act on ONboard EISA. | |
3217 | */ | |
3218 | ||
3219 | static void stli_onbeinit(stlibrd_t *brdp) | |
3220 | { | |
3221 | unsigned long memconf; | |
3222 | ||
1da177e4 LT |
3223 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
3224 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3225 | udelay(10); | |
3226 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3227 | mdelay(1000); | |
3228 | ||
3229 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; | |
3230 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); | |
3231 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; | |
3232 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); | |
3233 | outb(0x1, brdp->iobase); | |
3234 | mdelay(1); | |
3235 | } | |
3236 | ||
3237 | /*****************************************************************************/ | |
3238 | ||
3239 | static void stli_onbeenable(stlibrd_t *brdp) | |
3240 | { | |
1da177e4 LT |
3241 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); |
3242 | } | |
3243 | ||
3244 | /*****************************************************************************/ | |
3245 | ||
3246 | static void stli_onbedisable(stlibrd_t *brdp) | |
3247 | { | |
1da177e4 LT |
3248 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
3249 | } | |
3250 | ||
3251 | /*****************************************************************************/ | |
3252 | ||
3253 | static char *stli_onbegetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3254 | { | |
4ac4360b AC |
3255 | void *ptr; |
3256 | unsigned char val; | |
1da177e4 LT |
3257 | |
3258 | if (offset > brdp->memsize) { | |
3259 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3260 | "range at line=%d(%d), brd=%d\n", | |
3261 | (int) offset, line, __LINE__, brdp->brdnr); | |
3262 | ptr = NULL; | |
3263 | val = 0; | |
3264 | } else { | |
3265 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); | |
3266 | if (offset < ONB_EIPAGESIZE) | |
3267 | val = ONB_EIENABLE; | |
3268 | else | |
3269 | val = ONB_EIENABLE | 0x40; | |
3270 | } | |
3271 | outb(val, (brdp->iobase + ONB_EICONFR)); | |
3272 | return(ptr); | |
3273 | } | |
3274 | ||
3275 | /*****************************************************************************/ | |
3276 | ||
3277 | static void stli_onbereset(stlibrd_t *brdp) | |
3278 | { | |
1da177e4 LT |
3279 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
3280 | udelay(10); | |
3281 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3282 | mdelay(1000); | |
3283 | } | |
3284 | ||
3285 | /*****************************************************************************/ | |
3286 | ||
3287 | /* | |
3288 | * The following routines act on Brumby boards. | |
3289 | */ | |
3290 | ||
3291 | static void stli_bbyinit(stlibrd_t *brdp) | |
3292 | { | |
1da177e4 LT |
3293 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3294 | udelay(10); | |
3295 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3296 | mdelay(1000); | |
3297 | outb(0x1, brdp->iobase); | |
3298 | mdelay(1); | |
3299 | } | |
3300 | ||
3301 | /*****************************************************************************/ | |
3302 | ||
3303 | static char *stli_bbygetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3304 | { | |
4ac4360b AC |
3305 | void *ptr; |
3306 | unsigned char val; | |
1da177e4 | 3307 | |
4ac4360b | 3308 | BUG_ON(offset > brdp->memsize); |
1da177e4 | 3309 | |
4ac4360b AC |
3310 | ptr = brdp->membase + (offset % BBY_PAGESIZE); |
3311 | val = (unsigned char) (offset / BBY_PAGESIZE); | |
1da177e4 LT |
3312 | outb(val, (brdp->iobase + BBY_ATCONFR)); |
3313 | return(ptr); | |
3314 | } | |
3315 | ||
3316 | /*****************************************************************************/ | |
3317 | ||
3318 | static void stli_bbyreset(stlibrd_t *brdp) | |
3319 | { | |
1da177e4 LT |
3320 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3321 | udelay(10); | |
3322 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3323 | mdelay(1000); | |
3324 | } | |
3325 | ||
3326 | /*****************************************************************************/ | |
3327 | ||
3328 | /* | |
3329 | * The following routines act on original old Stallion boards. | |
3330 | */ | |
3331 | ||
3332 | static void stli_stalinit(stlibrd_t *brdp) | |
3333 | { | |
1da177e4 LT |
3334 | outb(0x1, brdp->iobase); |
3335 | mdelay(1000); | |
3336 | } | |
3337 | ||
3338 | /*****************************************************************************/ | |
3339 | ||
3340 | static char *stli_stalgetmemptr(stlibrd_t *brdp, unsigned long offset, int line) | |
3341 | { | |
4ac4360b AC |
3342 | BUG_ON(offset > brdp->memsize); |
3343 | return brdp->membase + (offset % STAL_PAGESIZE); | |
1da177e4 LT |
3344 | } |
3345 | ||
3346 | /*****************************************************************************/ | |
3347 | ||
3348 | static void stli_stalreset(stlibrd_t *brdp) | |
3349 | { | |
4ac4360b | 3350 | u32 __iomem *vecp; |
1da177e4 | 3351 | |
4ac4360b AC |
3352 | vecp = (u32 __iomem *) (brdp->membase + 0x30); |
3353 | writel(0xffff0000, vecp); | |
1da177e4 LT |
3354 | outb(0, brdp->iobase); |
3355 | mdelay(1000); | |
3356 | } | |
3357 | ||
3358 | /*****************************************************************************/ | |
3359 | ||
3360 | /* | |
3361 | * Try to find an ECP board and initialize it. This handles only ECP | |
3362 | * board types. | |
3363 | */ | |
3364 | ||
3365 | static int stli_initecp(stlibrd_t *brdp) | |
3366 | { | |
4ac4360b AC |
3367 | cdkecpsig_t sig; |
3368 | cdkecpsig_t __iomem *sigsp; | |
3369 | unsigned int status, nxtid; | |
3370 | char *name; | |
3371 | int panelnr, nrports; | |
1da177e4 LT |
3372 | |
3373 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) | |
3374 | return -EIO; | |
3375 | ||
3376 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) | |
3377 | { | |
3378 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3379 | return -ENODEV; |
1da177e4 LT |
3380 | } |
3381 | ||
3382 | brdp->iosize = ECP_IOSIZE; | |
3383 | ||
3384 | /* | |
3385 | * Based on the specific board type setup the common vars to access | |
3386 | * and enable shared memory. Set all board specific information now | |
3387 | * as well. | |
3388 | */ | |
3389 | switch (brdp->brdtype) { | |
3390 | case BRD_ECP: | |
3391 | brdp->membase = (void *) brdp->memaddr; | |
3392 | brdp->memsize = ECP_MEMSIZE; | |
3393 | brdp->pagesize = ECP_ATPAGESIZE; | |
3394 | brdp->init = stli_ecpinit; | |
3395 | brdp->enable = stli_ecpenable; | |
3396 | brdp->reenable = stli_ecpenable; | |
3397 | brdp->disable = stli_ecpdisable; | |
3398 | brdp->getmemptr = stli_ecpgetmemptr; | |
3399 | brdp->intr = stli_ecpintr; | |
3400 | brdp->reset = stli_ecpreset; | |
3401 | name = "serial(EC8/64)"; | |
3402 | break; | |
3403 | ||
3404 | case BRD_ECPE: | |
3405 | brdp->membase = (void *) brdp->memaddr; | |
3406 | brdp->memsize = ECP_MEMSIZE; | |
3407 | brdp->pagesize = ECP_EIPAGESIZE; | |
3408 | brdp->init = stli_ecpeiinit; | |
3409 | brdp->enable = stli_ecpeienable; | |
3410 | brdp->reenable = stli_ecpeienable; | |
3411 | brdp->disable = stli_ecpeidisable; | |
3412 | brdp->getmemptr = stli_ecpeigetmemptr; | |
3413 | brdp->intr = stli_ecpintr; | |
3414 | brdp->reset = stli_ecpeireset; | |
3415 | name = "serial(EC8/64-EI)"; | |
3416 | break; | |
3417 | ||
3418 | case BRD_ECPMC: | |
3419 | brdp->membase = (void *) brdp->memaddr; | |
3420 | brdp->memsize = ECP_MEMSIZE; | |
3421 | brdp->pagesize = ECP_MCPAGESIZE; | |
3422 | brdp->init = NULL; | |
3423 | brdp->enable = stli_ecpmcenable; | |
3424 | brdp->reenable = stli_ecpmcenable; | |
3425 | brdp->disable = stli_ecpmcdisable; | |
3426 | brdp->getmemptr = stli_ecpmcgetmemptr; | |
3427 | brdp->intr = stli_ecpintr; | |
3428 | brdp->reset = stli_ecpmcreset; | |
3429 | name = "serial(EC8/64-MCA)"; | |
3430 | break; | |
3431 | ||
3432 | case BRD_ECPPCI: | |
3433 | brdp->membase = (void *) brdp->memaddr; | |
3434 | brdp->memsize = ECP_PCIMEMSIZE; | |
3435 | brdp->pagesize = ECP_PCIPAGESIZE; | |
3436 | brdp->init = stli_ecppciinit; | |
3437 | brdp->enable = NULL; | |
3438 | brdp->reenable = NULL; | |
3439 | brdp->disable = NULL; | |
3440 | brdp->getmemptr = stli_ecppcigetmemptr; | |
3441 | brdp->intr = stli_ecpintr; | |
3442 | brdp->reset = stli_ecppcireset; | |
3443 | name = "serial(EC/RA-PCI)"; | |
3444 | break; | |
3445 | ||
3446 | default: | |
3447 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3448 | return -EINVAL; |
1da177e4 LT |
3449 | } |
3450 | ||
3451 | /* | |
3452 | * The per-board operations structure is all set up, so now let's go | |
3453 | * and get the board operational. Firstly initialize board configuration | |
3454 | * registers. Set the memory mapping info so we can get at the boards | |
3455 | * shared memory. | |
3456 | */ | |
3457 | EBRDINIT(brdp); | |
3458 | ||
3459 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
4ac4360b | 3460 | if (brdp->membase == NULL) |
1da177e4 LT |
3461 | { |
3462 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3463 | return -ENOMEM; |
1da177e4 LT |
3464 | } |
3465 | ||
3466 | /* | |
3467 | * Now that all specific code is set up, enable the shared memory and | |
3468 | * look for the a signature area that will tell us exactly what board | |
3469 | * this is, and what it is connected to it. | |
3470 | */ | |
3471 | EBRDENABLE(brdp); | |
4ac4360b | 3472 | sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
634965f5 | 3473 | memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); |
1da177e4 LT |
3474 | EBRDDISABLE(brdp); |
3475 | ||
4ac4360b | 3476 | if (sig.magic != cpu_to_le32(ECP_MAGIC)) |
1da177e4 LT |
3477 | { |
3478 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3479 | return -ENODEV; |
1da177e4 LT |
3480 | } |
3481 | ||
3482 | /* | |
3483 | * Scan through the signature looking at the panels connected to the | |
3484 | * board. Calculate the total number of ports as we go. | |
3485 | */ | |
3486 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { | |
3487 | status = sig.panelid[nxtid]; | |
3488 | if ((status & ECH_PNLIDMASK) != nxtid) | |
3489 | break; | |
3490 | ||
3491 | brdp->panelids[panelnr] = status; | |
3492 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; | |
3493 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) | |
3494 | nxtid++; | |
3495 | brdp->panels[panelnr] = nrports; | |
3496 | brdp->nrports += nrports; | |
3497 | nxtid++; | |
3498 | brdp->nrpanels++; | |
3499 | } | |
3500 | ||
3501 | ||
3502 | brdp->state |= BST_FOUND; | |
4ac4360b | 3503 | return 0; |
1da177e4 LT |
3504 | } |
3505 | ||
3506 | /*****************************************************************************/ | |
3507 | ||
3508 | /* | |
3509 | * Try to find an ONboard, Brumby or Stallion board and initialize it. | |
3510 | * This handles only these board types. | |
3511 | */ | |
3512 | ||
3513 | static int stli_initonb(stlibrd_t *brdp) | |
3514 | { | |
4ac4360b AC |
3515 | cdkonbsig_t sig; |
3516 | cdkonbsig_t __iomem *sigsp; | |
3517 | char *name; | |
3518 | int i; | |
1da177e4 LT |
3519 | |
3520 | /* | |
3521 | * Do a basic sanity check on the IO and memory addresses. | |
3522 | */ | |
4ac4360b AC |
3523 | if (brdp->iobase == 0 || brdp->memaddr == 0) |
3524 | return -ENODEV; | |
1da177e4 LT |
3525 | |
3526 | brdp->iosize = ONB_IOSIZE; | |
3527 | ||
3528 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) | |
3529 | return -EIO; | |
3530 | ||
3531 | /* | |
3532 | * Based on the specific board type setup the common vars to access | |
3533 | * and enable shared memory. Set all board specific information now | |
3534 | * as well. | |
3535 | */ | |
3536 | switch (brdp->brdtype) { | |
3537 | case BRD_ONBOARD: | |
3538 | case BRD_ONBOARD32: | |
3539 | case BRD_ONBOARD2: | |
3540 | case BRD_ONBOARD2_32: | |
3541 | case BRD_ONBOARDRS: | |
1da177e4 LT |
3542 | brdp->memsize = ONB_MEMSIZE; |
3543 | brdp->pagesize = ONB_ATPAGESIZE; | |
3544 | brdp->init = stli_onbinit; | |
3545 | brdp->enable = stli_onbenable; | |
3546 | brdp->reenable = stli_onbenable; | |
3547 | brdp->disable = stli_onbdisable; | |
3548 | brdp->getmemptr = stli_onbgetmemptr; | |
3549 | brdp->intr = stli_ecpintr; | |
3550 | brdp->reset = stli_onbreset; | |
3551 | if (brdp->memaddr > 0x100000) | |
3552 | brdp->enabval = ONB_MEMENABHI; | |
3553 | else | |
3554 | brdp->enabval = ONB_MEMENABLO; | |
3555 | name = "serial(ONBoard)"; | |
3556 | break; | |
3557 | ||
3558 | case BRD_ONBOARDE: | |
1da177e4 LT |
3559 | brdp->memsize = ONB_EIMEMSIZE; |
3560 | brdp->pagesize = ONB_EIPAGESIZE; | |
3561 | brdp->init = stli_onbeinit; | |
3562 | brdp->enable = stli_onbeenable; | |
3563 | brdp->reenable = stli_onbeenable; | |
3564 | brdp->disable = stli_onbedisable; | |
3565 | brdp->getmemptr = stli_onbegetmemptr; | |
3566 | brdp->intr = stli_ecpintr; | |
3567 | brdp->reset = stli_onbereset; | |
3568 | name = "serial(ONBoard/E)"; | |
3569 | break; | |
3570 | ||
3571 | case BRD_BRUMBY4: | |
3572 | case BRD_BRUMBY8: | |
3573 | case BRD_BRUMBY16: | |
1da177e4 LT |
3574 | brdp->memsize = BBY_MEMSIZE; |
3575 | brdp->pagesize = BBY_PAGESIZE; | |
3576 | brdp->init = stli_bbyinit; | |
3577 | brdp->enable = NULL; | |
3578 | brdp->reenable = NULL; | |
3579 | brdp->disable = NULL; | |
3580 | brdp->getmemptr = stli_bbygetmemptr; | |
3581 | brdp->intr = stli_ecpintr; | |
3582 | brdp->reset = stli_bbyreset; | |
3583 | name = "serial(Brumby)"; | |
3584 | break; | |
3585 | ||
3586 | case BRD_STALLION: | |
1da177e4 LT |
3587 | brdp->memsize = STAL_MEMSIZE; |
3588 | brdp->pagesize = STAL_PAGESIZE; | |
3589 | brdp->init = stli_stalinit; | |
3590 | brdp->enable = NULL; | |
3591 | brdp->reenable = NULL; | |
3592 | brdp->disable = NULL; | |
3593 | brdp->getmemptr = stli_stalgetmemptr; | |
3594 | brdp->intr = stli_ecpintr; | |
3595 | brdp->reset = stli_stalreset; | |
3596 | name = "serial(Stallion)"; | |
3597 | break; | |
3598 | ||
3599 | default: | |
3600 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3601 | return -EINVAL; |
1da177e4 LT |
3602 | } |
3603 | ||
3604 | /* | |
3605 | * The per-board operations structure is all set up, so now let's go | |
3606 | * and get the board operational. Firstly initialize board configuration | |
3607 | * registers. Set the memory mapping info so we can get at the boards | |
3608 | * shared memory. | |
3609 | */ | |
3610 | EBRDINIT(brdp); | |
3611 | ||
3612 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
4ac4360b | 3613 | if (brdp->membase == NULL) |
1da177e4 LT |
3614 | { |
3615 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3616 | return -ENOMEM; |
1da177e4 LT |
3617 | } |
3618 | ||
3619 | /* | |
3620 | * Now that all specific code is set up, enable the shared memory and | |
3621 | * look for the a signature area that will tell us exactly what board | |
3622 | * this is, and how many ports. | |
3623 | */ | |
3624 | EBRDENABLE(brdp); | |
4ac4360b AC |
3625 | sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
3626 | memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); | |
1da177e4 LT |
3627 | EBRDDISABLE(brdp); |
3628 | ||
4ac4360b AC |
3629 | if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || |
3630 | sig.magic1 != cpu_to_le16(ONB_MAGIC1) || | |
3631 | sig.magic2 != cpu_to_le16(ONB_MAGIC2) || | |
3632 | sig.magic3 != cpu_to_le16(ONB_MAGIC3)) | |
1da177e4 LT |
3633 | { |
3634 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3635 | return -ENODEV; |
1da177e4 LT |
3636 | } |
3637 | ||
3638 | /* | |
3639 | * Scan through the signature alive mask and calculate how many ports | |
3640 | * there are on this board. | |
3641 | */ | |
3642 | brdp->nrpanels = 1; | |
3643 | if (sig.amask1) { | |
3644 | brdp->nrports = 32; | |
3645 | } else { | |
3646 | for (i = 0; (i < 16); i++) { | |
3647 | if (((sig.amask0 << i) & 0x8000) == 0) | |
3648 | break; | |
3649 | } | |
3650 | brdp->nrports = i; | |
3651 | } | |
3652 | brdp->panels[0] = brdp->nrports; | |
3653 | ||
3654 | ||
3655 | brdp->state |= BST_FOUND; | |
4ac4360b | 3656 | return 0; |
1da177e4 LT |
3657 | } |
3658 | ||
3659 | /*****************************************************************************/ | |
3660 | ||
3661 | /* | |
3662 | * Start up a running board. This routine is only called after the | |
3663 | * code has been down loaded to the board and is operational. It will | |
3664 | * read in the memory map, and get the show on the road... | |
3665 | */ | |
3666 | ||
3667 | static int stli_startbrd(stlibrd_t *brdp) | |
3668 | { | |
4ac4360b AC |
3669 | cdkhdr_t __iomem *hdrp; |
3670 | cdkmem_t __iomem *memp; | |
3671 | cdkasy_t __iomem *ap; | |
3672 | unsigned long flags; | |
3673 | stliport_t *portp; | |
3674 | int portnr, nrdevs, i, rc = 0; | |
3675 | u32 memoff; | |
3676 | ||
3677 | spin_lock_irqsave(&brd_lock, flags); | |
1da177e4 | 3678 | EBRDENABLE(brdp); |
4ac4360b | 3679 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1da177e4 LT |
3680 | nrdevs = hdrp->nrdevs; |
3681 | ||
3682 | #if 0 | |
3683 | printk("%s(%d): CDK version %d.%d.%d --> " | |
3684 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", | |
4ac4360b AC |
3685 | __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), |
3686 | readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), | |
3687 | readl(&hdrp->slavep)); | |
1da177e4 LT |
3688 | #endif |
3689 | ||
3690 | if (nrdevs < (brdp->nrports + 1)) { | |
3691 | printk(KERN_ERR "STALLION: slave failed to allocate memory for " | |
3692 | "all devices, devices=%d\n", nrdevs); | |
3693 | brdp->nrports = nrdevs - 1; | |
3694 | } | |
3695 | brdp->nrdevs = nrdevs; | |
3696 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; | |
3697 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; | |
3698 | brdp->bitsize = (nrdevs + 7) / 8; | |
4ac4360b AC |
3699 | memoff = readl(&hdrp->memp); |
3700 | if (memoff > brdp->memsize) { | |
1da177e4 LT |
3701 | printk(KERN_ERR "STALLION: corrupted shared memory region?\n"); |
3702 | rc = -EIO; | |
3703 | goto stli_donestartup; | |
3704 | } | |
4ac4360b AC |
3705 | memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); |
3706 | if (readw(&memp->dtype) != TYP_ASYNCTRL) { | |
1da177e4 LT |
3707 | printk(KERN_ERR "STALLION: no slave control device found\n"); |
3708 | goto stli_donestartup; | |
3709 | } | |
3710 | memp++; | |
3711 | ||
3712 | /* | |
3713 | * Cycle through memory allocation of each port. We are guaranteed to | |
3714 | * have all ports inside the first page of slave window, so no need to | |
3715 | * change pages while reading memory map. | |
3716 | */ | |
3717 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { | |
4ac4360b | 3718 | if (readw(&memp->dtype) != TYP_ASYNC) |
1da177e4 LT |
3719 | break; |
3720 | portp = brdp->ports[portnr]; | |
4ac4360b | 3721 | if (portp == NULL) |
1da177e4 LT |
3722 | break; |
3723 | portp->devnr = i; | |
4ac4360b | 3724 | portp->addr = readl(&memp->offset); |
1da177e4 LT |
3725 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); |
3726 | portp->portidx = (unsigned char) (i / 8); | |
3727 | portp->portbit = (unsigned char) (0x1 << (i % 8)); | |
3728 | } | |
3729 | ||
4ac4360b | 3730 | writeb(0xff, &hdrp->slavereq); |
1da177e4 LT |
3731 | |
3732 | /* | |
3733 | * For each port setup a local copy of the RX and TX buffer offsets | |
3734 | * and sizes. We do this separate from the above, because we need to | |
3735 | * move the shared memory page... | |
3736 | */ | |
3737 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { | |
3738 | portp = brdp->ports[portnr]; | |
4ac4360b | 3739 | if (portp == NULL) |
1da177e4 LT |
3740 | break; |
3741 | if (portp->addr == 0) | |
3742 | break; | |
4ac4360b AC |
3743 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
3744 | if (ap != NULL) { | |
3745 | portp->rxsize = readw(&ap->rxq.size); | |
3746 | portp->txsize = readw(&ap->txq.size); | |
3747 | portp->rxoffset = readl(&ap->rxq.offset); | |
3748 | portp->txoffset = readl(&ap->txq.offset); | |
1da177e4 LT |
3749 | } |
3750 | } | |
3751 | ||
3752 | stli_donestartup: | |
3753 | EBRDDISABLE(brdp); | |
4ac4360b | 3754 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
3755 | |
3756 | if (rc == 0) | |
3757 | brdp->state |= BST_STARTED; | |
3758 | ||
3759 | if (! stli_timeron) { | |
3760 | stli_timeron++; | |
3761 | stli_timerlist.expires = STLI_TIMEOUT; | |
3762 | add_timer(&stli_timerlist); | |
3763 | } | |
3764 | ||
4ac4360b | 3765 | return rc; |
1da177e4 LT |
3766 | } |
3767 | ||
3768 | /*****************************************************************************/ | |
3769 | ||
3770 | /* | |
3771 | * Probe and initialize the specified board. | |
3772 | */ | |
3773 | ||
3774 | static int __init stli_brdinit(stlibrd_t *brdp) | |
3775 | { | |
1da177e4 LT |
3776 | stli_brds[brdp->brdnr] = brdp; |
3777 | ||
3778 | switch (brdp->brdtype) { | |
3779 | case BRD_ECP: | |
3780 | case BRD_ECPE: | |
3781 | case BRD_ECPMC: | |
3782 | case BRD_ECPPCI: | |
3783 | stli_initecp(brdp); | |
3784 | break; | |
3785 | case BRD_ONBOARD: | |
3786 | case BRD_ONBOARDE: | |
3787 | case BRD_ONBOARD2: | |
3788 | case BRD_ONBOARD32: | |
3789 | case BRD_ONBOARD2_32: | |
3790 | case BRD_ONBOARDRS: | |
3791 | case BRD_BRUMBY4: | |
3792 | case BRD_BRUMBY8: | |
3793 | case BRD_BRUMBY16: | |
3794 | case BRD_STALLION: | |
3795 | stli_initonb(brdp); | |
3796 | break; | |
3797 | case BRD_EASYIO: | |
3798 | case BRD_ECH: | |
3799 | case BRD_ECHMC: | |
3800 | case BRD_ECHPCI: | |
3801 | printk(KERN_ERR "STALLION: %s board type not supported in " | |
3802 | "this driver\n", stli_brdnames[brdp->brdtype]); | |
4ac4360b | 3803 | return -ENODEV; |
1da177e4 LT |
3804 | default: |
3805 | printk(KERN_ERR "STALLION: board=%d is unknown board " | |
3806 | "type=%d\n", brdp->brdnr, brdp->brdtype); | |
4ac4360b | 3807 | return -ENODEV; |
1da177e4 LT |
3808 | } |
3809 | ||
3810 | if ((brdp->state & BST_FOUND) == 0) { | |
3811 | printk(KERN_ERR "STALLION: %s board not found, board=%d " | |
3812 | "io=%x mem=%x\n", | |
3813 | stli_brdnames[brdp->brdtype], brdp->brdnr, | |
3814 | brdp->iobase, (int) brdp->memaddr); | |
4ac4360b | 3815 | return -ENODEV; |
1da177e4 LT |
3816 | } |
3817 | ||
3818 | stli_initports(brdp); | |
3819 | printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x " | |
3820 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], | |
3821 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, | |
3822 | brdp->nrpanels, brdp->nrports); | |
4ac4360b | 3823 | return 0; |
1da177e4 LT |
3824 | } |
3825 | ||
3826 | /*****************************************************************************/ | |
3827 | ||
3828 | /* | |
3829 | * Probe around trying to find where the EISA boards shared memory | |
3830 | * might be. This is a bit if hack, but it is the best we can do. | |
3831 | */ | |
3832 | ||
3833 | static int stli_eisamemprobe(stlibrd_t *brdp) | |
3834 | { | |
4ac4360b AC |
3835 | cdkecpsig_t ecpsig, __iomem *ecpsigp; |
3836 | cdkonbsig_t onbsig, __iomem *onbsigp; | |
1da177e4 LT |
3837 | int i, foundit; |
3838 | ||
1da177e4 LT |
3839 | /* |
3840 | * First up we reset the board, to get it into a known state. There | |
3841 | * is only 2 board types here we need to worry about. Don;t use the | |
3842 | * standard board init routine here, it programs up the shared | |
3843 | * memory address, and we don't know it yet... | |
3844 | */ | |
3845 | if (brdp->brdtype == BRD_ECPE) { | |
3846 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
3847 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3848 | udelay(10); | |
3849 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3850 | udelay(500); | |
3851 | stli_ecpeienable(brdp); | |
3852 | } else if (brdp->brdtype == BRD_ONBOARDE) { | |
3853 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
3854 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3855 | udelay(10); | |
3856 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3857 | mdelay(100); | |
3858 | outb(0x1, brdp->iobase); | |
3859 | mdelay(1); | |
3860 | stli_onbeenable(brdp); | |
3861 | } else { | |
4ac4360b | 3862 | return -ENODEV; |
1da177e4 LT |
3863 | } |
3864 | ||
3865 | foundit = 0; | |
3866 | brdp->memsize = ECP_MEMSIZE; | |
3867 | ||
3868 | /* | |
3869 | * Board shared memory is enabled, so now we have a poke around and | |
3870 | * see if we can find it. | |
3871 | */ | |
3872 | for (i = 0; (i < stli_eisamempsize); i++) { | |
3873 | brdp->memaddr = stli_eisamemprobeaddrs[i]; | |
1da177e4 | 3874 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); |
4ac4360b | 3875 | if (brdp->membase == NULL) |
1da177e4 LT |
3876 | continue; |
3877 | ||
3878 | if (brdp->brdtype == BRD_ECPE) { | |
4ac4360b | 3879 | ecpsigp = (cdkecpsig_t __iomem *) stli_ecpeigetmemptr(brdp, |
1da177e4 | 3880 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3881 | memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); |
3882 | if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) | |
1da177e4 LT |
3883 | foundit = 1; |
3884 | } else { | |
4ac4360b | 3885 | onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, |
1da177e4 | 3886 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3887 | memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); |
3888 | if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && | |
3889 | (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && | |
3890 | (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && | |
3891 | (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) | |
1da177e4 LT |
3892 | foundit = 1; |
3893 | } | |
3894 | ||
3895 | iounmap(brdp->membase); | |
3896 | if (foundit) | |
3897 | break; | |
3898 | } | |
3899 | ||
3900 | /* | |
3901 | * Regardless of whether we found the shared memory or not we must | |
3902 | * disable the region. After that return success or failure. | |
3903 | */ | |
3904 | if (brdp->brdtype == BRD_ECPE) | |
3905 | stli_ecpeidisable(brdp); | |
3906 | else | |
3907 | stli_onbedisable(brdp); | |
3908 | ||
3909 | if (! foundit) { | |
3910 | brdp->memaddr = 0; | |
3911 | brdp->membase = NULL; | |
3912 | printk(KERN_ERR "STALLION: failed to probe shared memory " | |
3913 | "region for %s in EISA slot=%d\n", | |
3914 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); | |
4ac4360b | 3915 | return -ENODEV; |
1da177e4 | 3916 | } |
4ac4360b | 3917 | return 0; |
1da177e4 LT |
3918 | } |
3919 | ||
3920 | static int stli_getbrdnr(void) | |
3921 | { | |
3922 | int i; | |
3923 | ||
3924 | for (i = 0; i < STL_MAXBRDS; i++) { | |
3925 | if (!stli_brds[i]) { | |
3926 | if (i >= stli_nrbrds) | |
3927 | stli_nrbrds = i + 1; | |
3928 | return i; | |
3929 | } | |
3930 | } | |
3931 | return -1; | |
3932 | } | |
3933 | ||
3934 | /*****************************************************************************/ | |
3935 | ||
3936 | /* | |
3937 | * Probe around and try to find any EISA boards in system. The biggest | |
3938 | * problem here is finding out what memory address is associated with | |
3939 | * an EISA board after it is found. The registers of the ECPE and | |
3940 | * ONboardE are not readable - so we can't read them from there. We | |
3941 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't | |
3942 | * actually have any way to find out the real value. The best we can | |
3943 | * do is go probing around in the usual places hoping we can find it. | |
3944 | */ | |
3945 | ||
3946 | static int stli_findeisabrds(void) | |
3947 | { | |
4ac4360b AC |
3948 | stlibrd_t *brdp; |
3949 | unsigned int iobase, eid; | |
3950 | int i; | |
1da177e4 LT |
3951 | |
3952 | /* | |
4ac4360b | 3953 | * Firstly check if this is an EISA system. If this is not an EISA system then |
1da177e4 LT |
3954 | * don't bother going any further! |
3955 | */ | |
4ac4360b AC |
3956 | if (EISA_bus) |
3957 | return 0; | |
1da177e4 LT |
3958 | |
3959 | /* | |
3960 | * Looks like an EISA system, so go searching for EISA boards. | |
3961 | */ | |
3962 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { | |
3963 | outb(0xff, (iobase + 0xc80)); | |
3964 | eid = inb(iobase + 0xc80); | |
3965 | eid |= inb(iobase + 0xc81) << 8; | |
3966 | if (eid != STL_EISAID) | |
3967 | continue; | |
3968 | ||
3969 | /* | |
3970 | * We have found a board. Need to check if this board was | |
3971 | * statically configured already (just in case!). | |
3972 | */ | |
3973 | for (i = 0; (i < STL_MAXBRDS); i++) { | |
3974 | brdp = stli_brds[i]; | |
4ac4360b | 3975 | if (brdp == NULL) |
1da177e4 LT |
3976 | continue; |
3977 | if (brdp->iobase == iobase) | |
3978 | break; | |
3979 | } | |
3980 | if (i < STL_MAXBRDS) | |
3981 | continue; | |
3982 | ||
3983 | /* | |
3984 | * We have found a Stallion board and it is not configured already. | |
3985 | * Allocate a board structure and initialize it. | |
3986 | */ | |
4ac4360b AC |
3987 | if ((brdp = stli_allocbrd()) == NULL) |
3988 | return -ENOMEM; | |
1da177e4 | 3989 | if ((brdp->brdnr = stli_getbrdnr()) < 0) |
4ac4360b | 3990 | return -ENOMEM; |
1da177e4 LT |
3991 | eid = inb(iobase + 0xc82); |
3992 | if (eid == ECP_EISAID) | |
3993 | brdp->brdtype = BRD_ECPE; | |
3994 | else if (eid == ONB_EISAID) | |
3995 | brdp->brdtype = BRD_ONBOARDE; | |
3996 | else | |
3997 | brdp->brdtype = BRD_UNKNOWN; | |
3998 | brdp->iobase = iobase; | |
3999 | outb(0x1, (iobase + 0xc84)); | |
4000 | if (stli_eisamemprobe(brdp)) | |
4001 | outb(0, (iobase + 0xc84)); | |
4002 | stli_brdinit(brdp); | |
4003 | } | |
4004 | ||
4ac4360b | 4005 | return 0; |
1da177e4 LT |
4006 | } |
4007 | ||
4008 | /*****************************************************************************/ | |
4009 | ||
4010 | /* | |
4011 | * Find the next available board number that is free. | |
4012 | */ | |
4013 | ||
4014 | /*****************************************************************************/ | |
4015 | ||
4016 | #ifdef CONFIG_PCI | |
4017 | ||
4018 | /* | |
4019 | * We have a Stallion board. Allocate a board structure and | |
4020 | * initialize it. Read its IO and MEMORY resources from PCI | |
4021 | * configuration space. | |
4022 | */ | |
4023 | ||
4024 | static int stli_initpcibrd(int brdtype, struct pci_dev *devp) | |
4025 | { | |
4ac4360b | 4026 | stlibrd_t *brdp; |
1da177e4 LT |
4027 | |
4028 | if (pci_enable_device(devp)) | |
4ac4360b AC |
4029 | return -EIO; |
4030 | if ((brdp = stli_allocbrd()) == NULL) | |
4031 | return -ENOMEM; | |
1da177e4 LT |
4032 | if ((brdp->brdnr = stli_getbrdnr()) < 0) { |
4033 | printk(KERN_INFO "STALLION: too many boards found, " | |
4034 | "maximum supported %d\n", STL_MAXBRDS); | |
4ac4360b | 4035 | return 0; |
1da177e4 LT |
4036 | } |
4037 | brdp->brdtype = brdtype; | |
1da177e4 LT |
4038 | /* |
4039 | * We have all resources from the board, so lets setup the actual | |
4040 | * board structure now. | |
4041 | */ | |
4042 | brdp->iobase = pci_resource_start(devp, 3); | |
4043 | brdp->memaddr = pci_resource_start(devp, 2); | |
4044 | stli_brdinit(brdp); | |
4045 | ||
4ac4360b | 4046 | return 0; |
1da177e4 LT |
4047 | } |
4048 | ||
4049 | /*****************************************************************************/ | |
4050 | ||
4051 | /* | |
4052 | * Find all Stallion PCI boards that might be installed. Initialize each | |
4053 | * one as it is found. | |
4054 | */ | |
4055 | ||
4056 | static int stli_findpcibrds(void) | |
4057 | { | |
4ac4360b | 4058 | struct pci_dev *dev = NULL; |
1da177e4 | 4059 | |
4ac4360b AC |
4060 | while ((dev = pci_get_device(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA, dev))) { |
4061 | stli_initpcibrd(BRD_ECPPCI, dev); | |
1da177e4 | 4062 | } |
4ac4360b | 4063 | return 0; |
1da177e4 LT |
4064 | } |
4065 | ||
4066 | #endif | |
4067 | ||
4068 | /*****************************************************************************/ | |
4069 | ||
4070 | /* | |
4071 | * Allocate a new board structure. Fill out the basic info in it. | |
4072 | */ | |
4073 | ||
4074 | static stlibrd_t *stli_allocbrd(void) | |
4075 | { | |
4ac4360b | 4076 | stlibrd_t *brdp; |
1da177e4 | 4077 | |
b0b4ed72 TK |
4078 | brdp = kzalloc(sizeof(stlibrd_t), GFP_KERNEL); |
4079 | if (!brdp) { | |
1da177e4 | 4080 | printk(KERN_ERR "STALLION: failed to allocate memory " |
4ac4360b | 4081 | "(size=%Zd)\n", sizeof(stlibrd_t)); |
b0b4ed72 | 4082 | return NULL; |
1da177e4 | 4083 | } |
1da177e4 | 4084 | brdp->magic = STLI_BOARDMAGIC; |
4ac4360b | 4085 | return brdp; |
1da177e4 LT |
4086 | } |
4087 | ||
4088 | /*****************************************************************************/ | |
4089 | ||
4090 | /* | |
4091 | * Scan through all the boards in the configuration and see what we | |
4092 | * can find. | |
4093 | */ | |
4094 | ||
4095 | static int stli_initbrds(void) | |
4096 | { | |
4ac4360b AC |
4097 | stlibrd_t *brdp, *nxtbrdp; |
4098 | stlconf_t *confp; | |
4099 | int i, j; | |
1da177e4 LT |
4100 | |
4101 | if (stli_nrbrds > STL_MAXBRDS) { | |
4102 | printk(KERN_INFO "STALLION: too many boards in configuration " | |
4103 | "table, truncating to %d\n", STL_MAXBRDS); | |
4104 | stli_nrbrds = STL_MAXBRDS; | |
4105 | } | |
4106 | ||
4107 | /* | |
4108 | * Firstly scan the list of static boards configured. Allocate | |
4109 | * resources and initialize the boards as found. If this is a | |
4110 | * module then let the module args override static configuration. | |
4111 | */ | |
4112 | for (i = 0; (i < stli_nrbrds); i++) { | |
4113 | confp = &stli_brdconf[i]; | |
1da177e4 | 4114 | stli_parsebrd(confp, stli_brdsp[i]); |
4ac4360b AC |
4115 | if ((brdp = stli_allocbrd()) == NULL) |
4116 | return -ENOMEM; | |
1da177e4 LT |
4117 | brdp->brdnr = i; |
4118 | brdp->brdtype = confp->brdtype; | |
4119 | brdp->iobase = confp->ioaddr1; | |
4120 | brdp->memaddr = confp->memaddr; | |
4121 | stli_brdinit(brdp); | |
4122 | } | |
4123 | ||
4124 | /* | |
4125 | * Static configuration table done, so now use dynamic methods to | |
4126 | * see if any more boards should be configured. | |
4127 | */ | |
1da177e4 | 4128 | stli_argbrds(); |
dbc6b5f5 | 4129 | if (STLI_EISAPROBE) |
1da177e4 LT |
4130 | stli_findeisabrds(); |
4131 | #ifdef CONFIG_PCI | |
4132 | stli_findpcibrds(); | |
4133 | #endif | |
4134 | ||
4135 | /* | |
4136 | * All found boards are initialized. Now for a little optimization, if | |
4137 | * no boards are sharing the "shared memory" regions then we can just | |
4138 | * leave them all enabled. This is in fact the usual case. | |
4139 | */ | |
4140 | stli_shared = 0; | |
4141 | if (stli_nrbrds > 1) { | |
4142 | for (i = 0; (i < stli_nrbrds); i++) { | |
4143 | brdp = stli_brds[i]; | |
4ac4360b | 4144 | if (brdp == NULL) |
1da177e4 LT |
4145 | continue; |
4146 | for (j = i + 1; (j < stli_nrbrds); j++) { | |
4147 | nxtbrdp = stli_brds[j]; | |
4ac4360b | 4148 | if (nxtbrdp == NULL) |
1da177e4 LT |
4149 | continue; |
4150 | if ((brdp->membase >= nxtbrdp->membase) && | |
4151 | (brdp->membase <= (nxtbrdp->membase + | |
4152 | nxtbrdp->memsize - 1))) { | |
4153 | stli_shared++; | |
4154 | break; | |
4155 | } | |
4156 | } | |
4157 | } | |
4158 | } | |
4159 | ||
4160 | if (stli_shared == 0) { | |
4161 | for (i = 0; (i < stli_nrbrds); i++) { | |
4162 | brdp = stli_brds[i]; | |
4ac4360b | 4163 | if (brdp == NULL) |
1da177e4 LT |
4164 | continue; |
4165 | if (brdp->state & BST_FOUND) { | |
4166 | EBRDENABLE(brdp); | |
4167 | brdp->enable = NULL; | |
4168 | brdp->disable = NULL; | |
4169 | } | |
4170 | } | |
4171 | } | |
4172 | ||
4ac4360b | 4173 | return 0; |
1da177e4 LT |
4174 | } |
4175 | ||
4176 | /*****************************************************************************/ | |
4177 | ||
4178 | /* | |
4179 | * Code to handle an "staliomem" read operation. This device is the | |
4180 | * contents of the board shared memory. It is used for down loading | |
4181 | * the slave image (and debugging :-) | |
4182 | */ | |
4183 | ||
4184 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) | |
4185 | { | |
4ac4360b AC |
4186 | unsigned long flags; |
4187 | void *memptr; | |
4188 | stlibrd_t *brdp; | |
4189 | int brdnr, size, n; | |
4190 | void *p; | |
4191 | loff_t off = *offp; | |
1da177e4 LT |
4192 | |
4193 | brdnr = iminor(fp->f_dentry->d_inode); | |
4194 | if (brdnr >= stli_nrbrds) | |
4ac4360b | 4195 | return -ENODEV; |
1da177e4 | 4196 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4197 | if (brdp == NULL) |
4198 | return -ENODEV; | |
1da177e4 | 4199 | if (brdp->state == 0) |
4ac4360b AC |
4200 | return -ENODEV; |
4201 | if (off >= brdp->memsize || off + count < off) | |
4202 | return 0; | |
1da177e4 | 4203 | |
4ac4360b AC |
4204 | size = MIN(count, (brdp->memsize - off)); |
4205 | ||
4206 | /* | |
4207 | * Copy the data a page at a time | |
4208 | */ | |
4209 | ||
4210 | p = (void *)__get_free_page(GFP_KERNEL); | |
4211 | if(p == NULL) | |
4212 | return -ENOMEM; | |
1da177e4 | 4213 | |
1da177e4 | 4214 | while (size > 0) { |
4ac4360b AC |
4215 | spin_lock_irqsave(&brd_lock, flags); |
4216 | EBRDENABLE(brdp); | |
4217 | memptr = (void *) EBRDGETMEMPTR(brdp, off); | |
4218 | n = MIN(size, (brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); | |
4219 | n = MIN(n, PAGE_SIZE); | |
4220 | memcpy_fromio(p, memptr, n); | |
4221 | EBRDDISABLE(brdp); | |
4222 | spin_unlock_irqrestore(&brd_lock, flags); | |
4223 | if (copy_to_user(buf, p, n)) { | |
1da177e4 LT |
4224 | count = -EFAULT; |
4225 | goto out; | |
4226 | } | |
4ac4360b | 4227 | off += n; |
1da177e4 LT |
4228 | buf += n; |
4229 | size -= n; | |
4230 | } | |
4231 | out: | |
4ac4360b AC |
4232 | *offp = off; |
4233 | free_page((unsigned long)p); | |
4234 | return count; | |
1da177e4 LT |
4235 | } |
4236 | ||
4237 | /*****************************************************************************/ | |
4238 | ||
4239 | /* | |
4240 | * Code to handle an "staliomem" write operation. This device is the | |
4241 | * contents of the board shared memory. It is used for down loading | |
4242 | * the slave image (and debugging :-) | |
4ac4360b AC |
4243 | * |
4244 | * FIXME: copy under lock | |
1da177e4 LT |
4245 | */ |
4246 | ||
4247 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) | |
4248 | { | |
4ac4360b AC |
4249 | unsigned long flags; |
4250 | void *memptr; | |
4251 | stlibrd_t *brdp; | |
4252 | char __user *chbuf; | |
4253 | int brdnr, size, n; | |
4254 | void *p; | |
4255 | loff_t off = *offp; | |
1da177e4 LT |
4256 | |
4257 | brdnr = iminor(fp->f_dentry->d_inode); | |
4ac4360b | 4258 | |
1da177e4 | 4259 | if (brdnr >= stli_nrbrds) |
4ac4360b | 4260 | return -ENODEV; |
1da177e4 | 4261 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4262 | if (brdp == NULL) |
4263 | return -ENODEV; | |
1da177e4 | 4264 | if (brdp->state == 0) |
4ac4360b AC |
4265 | return -ENODEV; |
4266 | if (off >= brdp->memsize || off + count < off) | |
4267 | return 0; | |
1da177e4 LT |
4268 | |
4269 | chbuf = (char __user *) buf; | |
4ac4360b AC |
4270 | size = MIN(count, (brdp->memsize - off)); |
4271 | ||
4272 | /* | |
4273 | * Copy the data a page at a time | |
4274 | */ | |
4275 | ||
4276 | p = (void *)__get_free_page(GFP_KERNEL); | |
4277 | if(p == NULL) | |
4278 | return -ENOMEM; | |
1da177e4 | 4279 | |
1da177e4 | 4280 | while (size > 0) { |
4ac4360b AC |
4281 | n = MIN(size, (brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
4282 | n = MIN(n, PAGE_SIZE); | |
4283 | if (copy_from_user(p, chbuf, n)) { | |
4284 | if (count == 0) | |
4285 | count = -EFAULT; | |
1da177e4 LT |
4286 | goto out; |
4287 | } | |
4ac4360b AC |
4288 | spin_lock_irqsave(&brd_lock, flags); |
4289 | EBRDENABLE(brdp); | |
4290 | memptr = (void *) EBRDGETMEMPTR(brdp, off); | |
4291 | memcpy_toio(memptr, p, n); | |
4292 | EBRDDISABLE(brdp); | |
4293 | spin_unlock_irqrestore(&brd_lock, flags); | |
4294 | off += n; | |
1da177e4 LT |
4295 | chbuf += n; |
4296 | size -= n; | |
4297 | } | |
4298 | out: | |
4ac4360b AC |
4299 | free_page((unsigned long) p); |
4300 | *offp = off; | |
4301 | return count; | |
1da177e4 LT |
4302 | } |
4303 | ||
4304 | /*****************************************************************************/ | |
4305 | ||
4306 | /* | |
4307 | * Return the board stats structure to user app. | |
4308 | */ | |
4309 | ||
4310 | static int stli_getbrdstats(combrd_t __user *bp) | |
4311 | { | |
4ac4360b AC |
4312 | stlibrd_t *brdp; |
4313 | int i; | |
1da177e4 LT |
4314 | |
4315 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) | |
4316 | return -EFAULT; | |
4317 | if (stli_brdstats.brd >= STL_MAXBRDS) | |
4ac4360b | 4318 | return -ENODEV; |
1da177e4 | 4319 | brdp = stli_brds[stli_brdstats.brd]; |
4ac4360b AC |
4320 | if (brdp == NULL) |
4321 | return -ENODEV; | |
1da177e4 LT |
4322 | |
4323 | memset(&stli_brdstats, 0, sizeof(combrd_t)); | |
4324 | stli_brdstats.brd = brdp->brdnr; | |
4325 | stli_brdstats.type = brdp->brdtype; | |
4326 | stli_brdstats.hwid = 0; | |
4327 | stli_brdstats.state = brdp->state; | |
4328 | stli_brdstats.ioaddr = brdp->iobase; | |
4329 | stli_brdstats.memaddr = brdp->memaddr; | |
4330 | stli_brdstats.nrpanels = brdp->nrpanels; | |
4331 | stli_brdstats.nrports = brdp->nrports; | |
4332 | for (i = 0; (i < brdp->nrpanels); i++) { | |
4333 | stli_brdstats.panels[i].panel = i; | |
4334 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; | |
4335 | stli_brdstats.panels[i].nrports = brdp->panels[i]; | |
4336 | } | |
4337 | ||
4338 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) | |
4339 | return -EFAULT; | |
4ac4360b | 4340 | return 0; |
1da177e4 LT |
4341 | } |
4342 | ||
4343 | /*****************************************************************************/ | |
4344 | ||
4345 | /* | |
4346 | * Resolve the referenced port number into a port struct pointer. | |
4347 | */ | |
4348 | ||
4349 | static stliport_t *stli_getport(int brdnr, int panelnr, int portnr) | |
4350 | { | |
4ac4360b AC |
4351 | stlibrd_t *brdp; |
4352 | int i; | |
1da177e4 | 4353 | |
4ac4360b AC |
4354 | if (brdnr < 0 || brdnr >= STL_MAXBRDS) |
4355 | return NULL; | |
1da177e4 | 4356 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4357 | if (brdp == NULL) |
4358 | return NULL; | |
1da177e4 LT |
4359 | for (i = 0; (i < panelnr); i++) |
4360 | portnr += brdp->panels[i]; | |
4361 | if ((portnr < 0) || (portnr >= brdp->nrports)) | |
4ac4360b AC |
4362 | return NULL; |
4363 | return brdp->ports[portnr]; | |
1da177e4 LT |
4364 | } |
4365 | ||
4366 | /*****************************************************************************/ | |
4367 | ||
4368 | /* | |
4369 | * Return the port stats structure to user app. A NULL port struct | |
4370 | * pointer passed in means that we need to find out from the app | |
4371 | * what port to get stats for (used through board control device). | |
4372 | */ | |
4373 | ||
4374 | static int stli_portcmdstats(stliport_t *portp) | |
4375 | { | |
4376 | unsigned long flags; | |
4377 | stlibrd_t *brdp; | |
4378 | int rc; | |
4379 | ||
4380 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4381 | ||
4ac4360b AC |
4382 | if (portp == NULL) |
4383 | return -ENODEV; | |
1da177e4 | 4384 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
4385 | if (brdp == NULL) |
4386 | return -ENODEV; | |
1da177e4 LT |
4387 | |
4388 | if (brdp->state & BST_STARTED) { | |
4389 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, | |
4390 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) | |
4ac4360b | 4391 | return rc; |
1da177e4 LT |
4392 | } else { |
4393 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); | |
4394 | } | |
4395 | ||
4396 | stli_comstats.brd = portp->brdnr; | |
4397 | stli_comstats.panel = portp->panelnr; | |
4398 | stli_comstats.port = portp->portnr; | |
4399 | stli_comstats.state = portp->state; | |
4400 | stli_comstats.flags = portp->flags; | |
4401 | ||
4ac4360b AC |
4402 | spin_lock_irqsave(&brd_lock, flags); |
4403 | if (portp->tty != NULL) { | |
1da177e4 LT |
4404 | if (portp->tty->driver_data == portp) { |
4405 | stli_comstats.ttystate = portp->tty->flags; | |
4ac4360b AC |
4406 | stli_comstats.rxbuffered = -1; |
4407 | if (portp->tty->termios != NULL) { | |
1da177e4 LT |
4408 | stli_comstats.cflags = portp->tty->termios->c_cflag; |
4409 | stli_comstats.iflags = portp->tty->termios->c_iflag; | |
4410 | stli_comstats.oflags = portp->tty->termios->c_oflag; | |
4411 | stli_comstats.lflags = portp->tty->termios->c_lflag; | |
4412 | } | |
4413 | } | |
4414 | } | |
4ac4360b | 4415 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
4416 | |
4417 | stli_comstats.txtotal = stli_cdkstats.txchars; | |
4418 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; | |
4419 | stli_comstats.txbuffered = stli_cdkstats.txringq; | |
4420 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; | |
4421 | stli_comstats.rxoverrun = stli_cdkstats.overruns; | |
4422 | stli_comstats.rxparity = stli_cdkstats.parity; | |
4423 | stli_comstats.rxframing = stli_cdkstats.framing; | |
4424 | stli_comstats.rxlost = stli_cdkstats.ringover; | |
4425 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; | |
4426 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; | |
4427 | stli_comstats.txxon = stli_cdkstats.txstart; | |
4428 | stli_comstats.txxoff = stli_cdkstats.txstop; | |
4429 | stli_comstats.rxxon = stli_cdkstats.rxstart; | |
4430 | stli_comstats.rxxoff = stli_cdkstats.rxstop; | |
4431 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; | |
4432 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; | |
4433 | stli_comstats.modem = stli_cdkstats.dcdcnt; | |
4434 | stli_comstats.hwid = stli_cdkstats.hwid; | |
4435 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); | |
4436 | ||
4ac4360b | 4437 | return 0; |
1da177e4 LT |
4438 | } |
4439 | ||
4440 | /*****************************************************************************/ | |
4441 | ||
4442 | /* | |
4443 | * Return the port stats structure to user app. A NULL port struct | |
4444 | * pointer passed in means that we need to find out from the app | |
4445 | * what port to get stats for (used through board control device). | |
4446 | */ | |
4447 | ||
4448 | static int stli_getportstats(stliport_t *portp, comstats_t __user *cp) | |
4449 | { | |
4ac4360b AC |
4450 | stlibrd_t *brdp; |
4451 | int rc; | |
1da177e4 LT |
4452 | |
4453 | if (!portp) { | |
4454 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4455 | return -EFAULT; | |
4456 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4457 | stli_comstats.port); | |
4458 | if (!portp) | |
4459 | return -ENODEV; | |
4460 | } | |
4461 | ||
4462 | brdp = stli_brds[portp->brdnr]; | |
4463 | if (!brdp) | |
4464 | return -ENODEV; | |
4465 | ||
4466 | if ((rc = stli_portcmdstats(portp)) < 0) | |
4467 | return rc; | |
4468 | ||
4469 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? | |
4470 | -EFAULT : 0; | |
4471 | } | |
4472 | ||
4473 | /*****************************************************************************/ | |
4474 | ||
4475 | /* | |
4476 | * Clear the port stats structure. We also return it zeroed out... | |
4477 | */ | |
4478 | ||
4479 | static int stli_clrportstats(stliport_t *portp, comstats_t __user *cp) | |
4480 | { | |
4ac4360b AC |
4481 | stlibrd_t *brdp; |
4482 | int rc; | |
1da177e4 LT |
4483 | |
4484 | if (!portp) { | |
4485 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4486 | return -EFAULT; | |
4487 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4488 | stli_comstats.port); | |
4489 | if (!portp) | |
4490 | return -ENODEV; | |
4491 | } | |
4492 | ||
4493 | brdp = stli_brds[portp->brdnr]; | |
4494 | if (!brdp) | |
4495 | return -ENODEV; | |
4496 | ||
4497 | if (brdp->state & BST_STARTED) { | |
4498 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) | |
4499 | return rc; | |
4500 | } | |
4501 | ||
4502 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4503 | stli_comstats.brd = portp->brdnr; | |
4504 | stli_comstats.panel = portp->panelnr; | |
4505 | stli_comstats.port = portp->portnr; | |
4506 | ||
4507 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) | |
4508 | return -EFAULT; | |
4509 | return 0; | |
4510 | } | |
4511 | ||
4512 | /*****************************************************************************/ | |
4513 | ||
4514 | /* | |
4515 | * Return the entire driver ports structure to a user app. | |
4516 | */ | |
4517 | ||
4518 | static int stli_getportstruct(stliport_t __user *arg) | |
4519 | { | |
4ac4360b | 4520 | stliport_t *portp; |
1da177e4 LT |
4521 | |
4522 | if (copy_from_user(&stli_dummyport, arg, sizeof(stliport_t))) | |
4523 | return -EFAULT; | |
4524 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, | |
4525 | stli_dummyport.portnr); | |
4526 | if (!portp) | |
4527 | return -ENODEV; | |
4528 | if (copy_to_user(arg, portp, sizeof(stliport_t))) | |
4529 | return -EFAULT; | |
4530 | return 0; | |
4531 | } | |
4532 | ||
4533 | /*****************************************************************************/ | |
4534 | ||
4535 | /* | |
4536 | * Return the entire driver board structure to a user app. | |
4537 | */ | |
4538 | ||
4539 | static int stli_getbrdstruct(stlibrd_t __user *arg) | |
4540 | { | |
4ac4360b | 4541 | stlibrd_t *brdp; |
1da177e4 LT |
4542 | |
4543 | if (copy_from_user(&stli_dummybrd, arg, sizeof(stlibrd_t))) | |
4544 | return -EFAULT; | |
4545 | if ((stli_dummybrd.brdnr < 0) || (stli_dummybrd.brdnr >= STL_MAXBRDS)) | |
4546 | return -ENODEV; | |
4547 | brdp = stli_brds[stli_dummybrd.brdnr]; | |
4548 | if (!brdp) | |
4549 | return -ENODEV; | |
4550 | if (copy_to_user(arg, brdp, sizeof(stlibrd_t))) | |
4551 | return -EFAULT; | |
4552 | return 0; | |
4553 | } | |
4554 | ||
4555 | /*****************************************************************************/ | |
4556 | ||
4557 | /* | |
4558 | * The "staliomem" device is also required to do some special operations on | |
4559 | * the board. We need to be able to send an interrupt to the board, | |
4560 | * reset it, and start/stop it. | |
4561 | */ | |
4562 | ||
4563 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg) | |
4564 | { | |
4ac4360b AC |
4565 | stlibrd_t *brdp; |
4566 | int brdnr, rc, done; | |
1da177e4 LT |
4567 | void __user *argp = (void __user *)arg; |
4568 | ||
1da177e4 LT |
4569 | /* |
4570 | * First up handle the board independent ioctls. | |
4571 | */ | |
4572 | done = 0; | |
4573 | rc = 0; | |
4574 | ||
4575 | switch (cmd) { | |
4576 | case COM_GETPORTSTATS: | |
4577 | rc = stli_getportstats(NULL, argp); | |
4578 | done++; | |
4579 | break; | |
4580 | case COM_CLRPORTSTATS: | |
4581 | rc = stli_clrportstats(NULL, argp); | |
4582 | done++; | |
4583 | break; | |
4584 | case COM_GETBRDSTATS: | |
4585 | rc = stli_getbrdstats(argp); | |
4586 | done++; | |
4587 | break; | |
4588 | case COM_READPORT: | |
4589 | rc = stli_getportstruct(argp); | |
4590 | done++; | |
4591 | break; | |
4592 | case COM_READBOARD: | |
4593 | rc = stli_getbrdstruct(argp); | |
4594 | done++; | |
4595 | break; | |
4596 | } | |
4597 | ||
4598 | if (done) | |
4ac4360b | 4599 | return rc; |
1da177e4 LT |
4600 | |
4601 | /* | |
4602 | * Now handle the board specific ioctls. These all depend on the | |
4603 | * minor number of the device they were called from. | |
4604 | */ | |
4605 | brdnr = iminor(ip); | |
4606 | if (brdnr >= STL_MAXBRDS) | |
4ac4360b | 4607 | return -ENODEV; |
1da177e4 LT |
4608 | brdp = stli_brds[brdnr]; |
4609 | if (!brdp) | |
4ac4360b | 4610 | return -ENODEV; |
1da177e4 | 4611 | if (brdp->state == 0) |
4ac4360b | 4612 | return -ENODEV; |
1da177e4 LT |
4613 | |
4614 | switch (cmd) { | |
4615 | case STL_BINTR: | |
4616 | EBRDINTR(brdp); | |
4617 | break; | |
4618 | case STL_BSTART: | |
4619 | rc = stli_startbrd(brdp); | |
4620 | break; | |
4621 | case STL_BSTOP: | |
4622 | brdp->state &= ~BST_STARTED; | |
4623 | break; | |
4624 | case STL_BRESET: | |
4625 | brdp->state &= ~BST_STARTED; | |
4626 | EBRDRESET(brdp); | |
4627 | if (stli_shared == 0) { | |
4628 | if (brdp->reenable != NULL) | |
4629 | (* brdp->reenable)(brdp); | |
4630 | } | |
4631 | break; | |
4632 | default: | |
4633 | rc = -ENOIOCTLCMD; | |
4634 | break; | |
4635 | } | |
4ac4360b | 4636 | return rc; |
1da177e4 LT |
4637 | } |
4638 | ||
4639 | static struct tty_operations stli_ops = { | |
4640 | .open = stli_open, | |
4641 | .close = stli_close, | |
4642 | .write = stli_write, | |
4643 | .put_char = stli_putchar, | |
4644 | .flush_chars = stli_flushchars, | |
4645 | .write_room = stli_writeroom, | |
4646 | .chars_in_buffer = stli_charsinbuffer, | |
4647 | .ioctl = stli_ioctl, | |
4648 | .set_termios = stli_settermios, | |
4649 | .throttle = stli_throttle, | |
4650 | .unthrottle = stli_unthrottle, | |
4651 | .stop = stli_stop, | |
4652 | .start = stli_start, | |
4653 | .hangup = stli_hangup, | |
4654 | .flush_buffer = stli_flushbuffer, | |
4655 | .break_ctl = stli_breakctl, | |
4656 | .wait_until_sent = stli_waituntilsent, | |
4657 | .send_xchar = stli_sendxchar, | |
4658 | .read_proc = stli_readproc, | |
4659 | .tiocmget = stli_tiocmget, | |
4660 | .tiocmset = stli_tiocmset, | |
4661 | }; | |
4662 | ||
4663 | /*****************************************************************************/ | |
4664 | ||
672b2714 | 4665 | static int __init stli_init(void) |
1da177e4 LT |
4666 | { |
4667 | int i; | |
4668 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); | |
4669 | ||
4ac4360b AC |
4670 | spin_lock_init(&stli_lock); |
4671 | spin_lock_init(&brd_lock); | |
4672 | ||
1da177e4 LT |
4673 | stli_initbrds(); |
4674 | ||
4675 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); | |
4676 | if (!stli_serial) | |
4677 | return -ENOMEM; | |
4678 | ||
4679 | /* | |
4680 | * Allocate a temporary write buffer. | |
4681 | */ | |
b0b4ed72 TK |
4682 | stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); |
4683 | if (!stli_txcookbuf) | |
1da177e4 LT |
4684 | printk(KERN_ERR "STALLION: failed to allocate memory " |
4685 | "(size=%d)\n", STLI_TXBUFSIZE); | |
4686 | ||
4687 | /* | |
4688 | * Set up a character driver for the shared memory region. We need this | |
4689 | * to down load the slave code image. Also it is a useful debugging tool. | |
4690 | */ | |
4691 | if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem)) | |
4692 | printk(KERN_ERR "STALLION: failed to register serial memory " | |
4693 | "device\n"); | |
4694 | ||
ca8eca68 | 4695 | istallion_class = class_create(THIS_MODULE, "staliomem"); |
7c69ef79 | 4696 | for (i = 0; i < 4; i++) |
53f46542 GKH |
4697 | class_device_create(istallion_class, NULL, |
4698 | MKDEV(STL_SIOMEMMAJOR, i), | |
1da177e4 | 4699 | NULL, "staliomem%d", i); |
1da177e4 LT |
4700 | |
4701 | /* | |
4702 | * Set up the tty driver structure and register us as a driver. | |
4703 | */ | |
4704 | stli_serial->owner = THIS_MODULE; | |
4705 | stli_serial->driver_name = stli_drvname; | |
4706 | stli_serial->name = stli_serialname; | |
4707 | stli_serial->major = STL_SERIALMAJOR; | |
4708 | stli_serial->minor_start = 0; | |
4709 | stli_serial->type = TTY_DRIVER_TYPE_SERIAL; | |
4710 | stli_serial->subtype = SERIAL_TYPE_NORMAL; | |
4711 | stli_serial->init_termios = stli_deftermios; | |
4712 | stli_serial->flags = TTY_DRIVER_REAL_RAW; | |
4713 | tty_set_operations(stli_serial, &stli_ops); | |
4714 | ||
4715 | if (tty_register_driver(stli_serial)) { | |
4716 | put_tty_driver(stli_serial); | |
4717 | printk(KERN_ERR "STALLION: failed to register serial driver\n"); | |
4718 | return -EBUSY; | |
4719 | } | |
4ac4360b | 4720 | return 0; |
1da177e4 LT |
4721 | } |
4722 | ||
4723 | /*****************************************************************************/ |