Commit | Line | Data |
---|---|---|
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 | * | |
1da177e4 LT |
17 | */ |
18 | ||
19 | /*****************************************************************************/ | |
20 | ||
1da177e4 | 21 | #include <linux/module.h> |
d43c36dc | 22 | #include <linux/sched.h> |
1da177e4 | 23 | #include <linux/slab.h> |
405f5571 | 24 | #include <linux/smp_lock.h> |
1da177e4 LT |
25 | #include <linux/interrupt.h> |
26 | #include <linux/tty.h> | |
27 | #include <linux/tty_flip.h> | |
28 | #include <linux/serial.h> | |
5bd6de7d | 29 | #include <linux/seq_file.h> |
1da177e4 LT |
30 | #include <linux/cdk.h> |
31 | #include <linux/comstats.h> | |
32 | #include <linux/istallion.h> | |
33 | #include <linux/ioport.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/init.h> | |
1da177e4 LT |
36 | #include <linux/device.h> |
37 | #include <linux/wait.h> | |
4ac4360b | 38 | #include <linux/eisa.h> |
a3f8d9d5 | 39 | #include <linux/ctype.h> |
1da177e4 LT |
40 | |
41 | #include <asm/io.h> | |
42 | #include <asm/uaccess.h> | |
43 | ||
1da177e4 | 44 | #include <linux/pci.h> |
1da177e4 LT |
45 | |
46 | /*****************************************************************************/ | |
47 | ||
48 | /* | |
49 | * Define different board types. Not all of the following board types | |
50 | * are supported by this driver. But I will use the standard "assigned" | |
51 | * board numbers. Currently supported boards are abbreviated as: | |
52 | * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and | |
53 | * STAL = Stallion. | |
54 | */ | |
55 | #define BRD_UNKNOWN 0 | |
56 | #define BRD_STALLION 1 | |
57 | #define BRD_BRUMBY4 2 | |
58 | #define BRD_ONBOARD2 3 | |
59 | #define BRD_ONBOARD 4 | |
1da177e4 | 60 | #define BRD_ONBOARDE 7 |
1da177e4 LT |
61 | #define BRD_ECP 23 |
62 | #define BRD_ECPE 24 | |
63 | #define BRD_ECPMC 25 | |
1da177e4 LT |
64 | #define BRD_ECPPCI 29 |
65 | ||
66 | #define BRD_BRUMBY BRD_BRUMBY4 | |
67 | ||
68 | /* | |
69 | * Define a configuration structure to hold the board configuration. | |
70 | * Need to set this up in the code (for now) with the boards that are | |
71 | * to be configured into the system. This is what needs to be modified | |
72 | * when adding/removing/modifying boards. Each line entry in the | |
73 | * stli_brdconf[] array is a board. Each line contains io/irq/memory | |
74 | * ranges for that board (as well as what type of board it is). | |
75 | * Some examples: | |
76 | * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, | |
77 | * This line will configure an EasyConnection 8/64 at io address 2a0, | |
78 | * and shared memory address of cc000. Multiple EasyConnection 8/64 | |
79 | * boards can share the same shared memory address space. No interrupt | |
80 | * is required for this board type. | |
81 | * Another example: | |
82 | * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, | |
83 | * This line will configure an EasyConnection 8/64 EISA in slot 5 and | |
84 | * shared memory address of 0x80000000 (2 GByte). Multiple | |
85 | * EasyConnection 8/64 EISA boards can share the same shared memory | |
86 | * address space. No interrupt is required for this board type. | |
87 | * Another example: | |
88 | * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, | |
89 | * This line will configure an ONboard (ISA type) at io address 240, | |
90 | * and shared memory address of d0000. Multiple ONboards can share | |
91 | * the same shared memory address space. No interrupt required. | |
92 | * Another example: | |
93 | * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, | |
94 | * This line will configure a Brumby board (any number of ports!) at | |
95 | * io address 360 and shared memory address of c8000. All Brumby boards | |
96 | * configured into a system must have their own separate io and memory | |
97 | * addresses. No interrupt is required. | |
98 | * Another example: | |
99 | * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, | |
100 | * This line will configure an original Stallion board at io address 330 | |
101 | * and shared memory address d0000 (this would only be valid for a "V4.0" | |
102 | * or Rev.O Stallion board). All Stallion boards configured into the | |
103 | * system must have their own separate io and memory addresses. No | |
104 | * interrupt is required. | |
105 | */ | |
106 | ||
1f8ec435 | 107 | struct stlconf { |
1da177e4 LT |
108 | int brdtype; |
109 | int ioaddr1; | |
110 | int ioaddr2; | |
111 | unsigned long memaddr; | |
112 | int irq; | |
113 | int irqtype; | |
1f8ec435 | 114 | }; |
1da177e4 | 115 | |
1328d737 | 116 | static unsigned int stli_nrbrds; |
1da177e4 | 117 | |
4ac4360b AC |
118 | /* stli_lock must NOT be taken holding brd_lock */ |
119 | static spinlock_t stli_lock; /* TTY logic lock */ | |
120 | static spinlock_t brd_lock; /* Board logic lock */ | |
121 | ||
1da177e4 LT |
122 | /* |
123 | * There is some experimental EISA board detection code in this driver. | |
124 | * By default it is disabled, but for those that want to try it out, | |
125 | * then set the define below to be 1. | |
126 | */ | |
127 | #define STLI_EISAPROBE 0 | |
128 | ||
129 | /*****************************************************************************/ | |
130 | ||
131 | /* | |
132 | * Define some important driver characteristics. Device major numbers | |
133 | * allocated as per Linux Device Registry. | |
134 | */ | |
135 | #ifndef STL_SIOMEMMAJOR | |
136 | #define STL_SIOMEMMAJOR 28 | |
137 | #endif | |
138 | #ifndef STL_SERIALMAJOR | |
139 | #define STL_SERIALMAJOR 24 | |
140 | #endif | |
141 | #ifndef STL_CALLOUTMAJOR | |
142 | #define STL_CALLOUTMAJOR 25 | |
143 | #endif | |
144 | ||
145 | /*****************************************************************************/ | |
146 | ||
147 | /* | |
148 | * Define our local driver identity first. Set up stuff to deal with | |
149 | * all the local structures required by a serial tty driver. | |
150 | */ | |
151 | static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; | |
152 | static char *stli_drvname = "istallion"; | |
153 | static char *stli_drvversion = "5.6.0"; | |
154 | static char *stli_serialname = "ttyE"; | |
155 | ||
156 | static struct tty_driver *stli_serial; | |
31f35939 | 157 | static const struct tty_port_operations stli_port_ops; |
1da177e4 LT |
158 | |
159 | #define STLI_TXBUFSIZE 4096 | |
160 | ||
161 | /* | |
162 | * Use a fast local buffer for cooked characters. Typically a whole | |
163 | * bunch of cooked characters come in for a port, 1 at a time. So we | |
164 | * save those up into a local buffer, then write out the whole lot | |
165 | * with a large memcpy. Just use 1 buffer for all ports, since its | |
166 | * use it is only need for short periods of time by each port. | |
167 | */ | |
168 | static char *stli_txcookbuf; | |
169 | static int stli_txcooksize; | |
170 | static int stli_txcookrealsize; | |
171 | static struct tty_struct *stli_txcooktty; | |
172 | ||
173 | /* | |
174 | * Define a local default termios struct. All ports will be created | |
175 | * with this termios initially. Basically all it defines is a raw port | |
176 | * at 9600 baud, 8 data bits, no parity, 1 stop bit. | |
177 | */ | |
606d099c | 178 | static struct ktermios stli_deftermios = { |
1da177e4 LT |
179 | .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), |
180 | .c_cc = INIT_C_CC, | |
606d099c AC |
181 | .c_ispeed = 9600, |
182 | .c_ospeed = 9600, | |
1da177e4 LT |
183 | }; |
184 | ||
185 | /* | |
186 | * Define global stats structures. Not used often, and can be | |
187 | * re-used for each stats call. | |
188 | */ | |
189 | static comstats_t stli_comstats; | |
190 | static combrd_t stli_brdstats; | |
1f8ec435 | 191 | static struct asystats stli_cdkstats; |
1da177e4 LT |
192 | |
193 | /*****************************************************************************/ | |
194 | ||
b103b5cf | 195 | static DEFINE_MUTEX(stli_brdslock); |
1f8ec435 | 196 | static struct stlibrd *stli_brds[STL_MAXBRDS]; |
1da177e4 LT |
197 | |
198 | static int stli_shared; | |
199 | ||
200 | /* | |
201 | * Per board state flags. Used with the state field of the board struct. | |
202 | * Not really much here... All we need to do is keep track of whether | |
203 | * the board has been detected, and whether it is actually running a slave | |
204 | * or not. | |
205 | */ | |
206 | #define BST_FOUND 0x1 | |
207 | #define BST_STARTED 0x2 | |
39014172 | 208 | #define BST_PROBED 0x4 |
1da177e4 LT |
209 | |
210 | /* | |
211 | * Define the set of port state flags. These are marked for internal | |
212 | * state purposes only, usually to do with the state of communications | |
213 | * with the slave. Most of them need to be updated atomically, so always | |
214 | * use the bit setting operations (unless protected by cli/sti). | |
215 | */ | |
1da177e4 LT |
216 | #define ST_OPENING 2 |
217 | #define ST_CLOSING 3 | |
218 | #define ST_CMDING 4 | |
219 | #define ST_TXBUSY 5 | |
220 | #define ST_RXING 6 | |
221 | #define ST_DOFLUSHRX 7 | |
222 | #define ST_DOFLUSHTX 8 | |
223 | #define ST_DOSIGS 9 | |
224 | #define ST_RXSTOP 10 | |
225 | #define ST_GETSIGS 11 | |
226 | ||
227 | /* | |
228 | * Define an array of board names as printable strings. Handy for | |
229 | * referencing boards when printing trace and stuff. | |
230 | */ | |
231 | static char *stli_brdnames[] = { | |
232 | "Unknown", | |
233 | "Stallion", | |
234 | "Brumby", | |
235 | "ONboard-MC", | |
236 | "ONboard", | |
237 | "Brumby", | |
238 | "Brumby", | |
239 | "ONboard-EI", | |
a3f8d9d5 | 240 | NULL, |
1da177e4 LT |
241 | "ONboard", |
242 | "ONboard-MC", | |
243 | "ONboard-MC", | |
a3f8d9d5 JS |
244 | NULL, |
245 | NULL, | |
246 | NULL, | |
247 | NULL, | |
248 | NULL, | |
249 | NULL, | |
250 | NULL, | |
251 | NULL, | |
1da177e4 LT |
252 | "EasyIO", |
253 | "EC8/32-AT", | |
254 | "EC8/32-MC", | |
255 | "EC8/64-AT", | |
256 | "EC8/64-EI", | |
257 | "EC8/64-MC", | |
258 | "EC8/32-PCI", | |
259 | "EC8/64-PCI", | |
260 | "EasyIO-PCI", | |
261 | "EC/RA-PCI", | |
262 | }; | |
263 | ||
264 | /*****************************************************************************/ | |
265 | ||
1da177e4 LT |
266 | /* |
267 | * Define some string labels for arguments passed from the module | |
268 | * load line. These allow for easy board definitions, and easy | |
269 | * modification of the io, memory and irq resoucres. | |
270 | */ | |
271 | ||
272 | static char *board0[8]; | |
273 | static char *board1[8]; | |
274 | static char *board2[8]; | |
275 | static char *board3[8]; | |
276 | ||
277 | static char **stli_brdsp[] = { | |
278 | (char **) &board0, | |
279 | (char **) &board1, | |
280 | (char **) &board2, | |
281 | (char **) &board3 | |
282 | }; | |
283 | ||
284 | /* | |
285 | * Define a set of common board names, and types. This is used to | |
286 | * parse any module arguments. | |
287 | */ | |
288 | ||
1f8ec435 | 289 | static struct stlibrdtype { |
1da177e4 LT |
290 | char *name; |
291 | int type; | |
1f8ec435 | 292 | } stli_brdstr[] = { |
1da177e4 LT |
293 | { "stallion", BRD_STALLION }, |
294 | { "1", BRD_STALLION }, | |
295 | { "brumby", BRD_BRUMBY }, | |
296 | { "brumby4", BRD_BRUMBY }, | |
297 | { "brumby/4", BRD_BRUMBY }, | |
298 | { "brumby-4", BRD_BRUMBY }, | |
299 | { "brumby8", BRD_BRUMBY }, | |
300 | { "brumby/8", BRD_BRUMBY }, | |
301 | { "brumby-8", BRD_BRUMBY }, | |
302 | { "brumby16", BRD_BRUMBY }, | |
303 | { "brumby/16", BRD_BRUMBY }, | |
304 | { "brumby-16", BRD_BRUMBY }, | |
305 | { "2", BRD_BRUMBY }, | |
306 | { "onboard2", BRD_ONBOARD2 }, | |
307 | { "onboard-2", BRD_ONBOARD2 }, | |
308 | { "onboard/2", BRD_ONBOARD2 }, | |
309 | { "onboard-mc", BRD_ONBOARD2 }, | |
310 | { "onboard/mc", BRD_ONBOARD2 }, | |
311 | { "onboard-mca", BRD_ONBOARD2 }, | |
312 | { "onboard/mca", BRD_ONBOARD2 }, | |
313 | { "3", BRD_ONBOARD2 }, | |
314 | { "onboard", BRD_ONBOARD }, | |
315 | { "onboardat", BRD_ONBOARD }, | |
316 | { "4", BRD_ONBOARD }, | |
317 | { "onboarde", BRD_ONBOARDE }, | |
318 | { "onboard-e", BRD_ONBOARDE }, | |
319 | { "onboard/e", BRD_ONBOARDE }, | |
320 | { "onboard-ei", BRD_ONBOARDE }, | |
321 | { "onboard/ei", BRD_ONBOARDE }, | |
322 | { "7", BRD_ONBOARDE }, | |
323 | { "ecp", BRD_ECP }, | |
324 | { "ecpat", BRD_ECP }, | |
325 | { "ec8/64", BRD_ECP }, | |
326 | { "ec8/64-at", BRD_ECP }, | |
327 | { "ec8/64-isa", BRD_ECP }, | |
328 | { "23", BRD_ECP }, | |
329 | { "ecpe", BRD_ECPE }, | |
330 | { "ecpei", BRD_ECPE }, | |
331 | { "ec8/64-e", BRD_ECPE }, | |
332 | { "ec8/64-ei", BRD_ECPE }, | |
333 | { "24", BRD_ECPE }, | |
334 | { "ecpmc", BRD_ECPMC }, | |
335 | { "ec8/64-mc", BRD_ECPMC }, | |
336 | { "ec8/64-mca", BRD_ECPMC }, | |
337 | { "25", BRD_ECPMC }, | |
338 | { "ecppci", BRD_ECPPCI }, | |
339 | { "ec/ra", BRD_ECPPCI }, | |
340 | { "ec/ra-pc", BRD_ECPPCI }, | |
341 | { "ec/ra-pci", BRD_ECPPCI }, | |
342 | { "29", BRD_ECPPCI }, | |
343 | }; | |
344 | ||
345 | /* | |
346 | * Define the module agruments. | |
347 | */ | |
348 | MODULE_AUTHOR("Greg Ungerer"); | |
349 | MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); | |
350 | MODULE_LICENSE("GPL"); | |
351 | ||
352 | ||
8d3b33f6 | 353 | module_param_array(board0, charp, NULL, 0); |
1da177e4 | 354 | MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 355 | module_param_array(board1, charp, NULL, 0); |
1da177e4 | 356 | MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 357 | module_param_array(board2, charp, NULL, 0); |
1da177e4 | 358 | MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 359 | module_param_array(board3, charp, NULL, 0); |
1da177e4 LT |
360 | MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); |
361 | ||
a00f33f3 | 362 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
363 | /* |
364 | * Set up a default memory address table for EISA board probing. | |
365 | * The default addresses are all bellow 1Mbyte, which has to be the | |
366 | * case anyway. They should be safe, since we only read values from | |
367 | * them, and interrupts are disabled while we do it. If the higher | |
368 | * memory support is compiled in then we also try probing around | |
369 | * the 1Gb, 2Gb and 3Gb areas as well... | |
370 | */ | |
371 | static unsigned long stli_eisamemprobeaddrs[] = { | |
372 | 0xc0000, 0xd0000, 0xe0000, 0xf0000, | |
373 | 0x80000000, 0x80010000, 0x80020000, 0x80030000, | |
374 | 0x40000000, 0x40010000, 0x40020000, 0x40030000, | |
375 | 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, | |
376 | 0xff000000, 0xff010000, 0xff020000, 0xff030000, | |
377 | }; | |
378 | ||
fe971071 | 379 | static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs); |
a00f33f3 | 380 | #endif |
1da177e4 LT |
381 | |
382 | /* | |
383 | * Define the Stallion PCI vendor and device IDs. | |
384 | */ | |
1da177e4 LT |
385 | #ifndef PCI_DEVICE_ID_ECRA |
386 | #define PCI_DEVICE_ID_ECRA 0x0004 | |
387 | #endif | |
388 | ||
389 | static struct pci_device_id istallion_pci_tbl[] = { | |
4ac4360b | 390 | { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), }, |
1da177e4 LT |
391 | { 0 } |
392 | }; | |
393 | MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); | |
394 | ||
845bead4 | 395 | static struct pci_driver stli_pcidriver; |
1da177e4 LT |
396 | |
397 | /*****************************************************************************/ | |
398 | ||
399 | /* | |
400 | * Hardware configuration info for ECP boards. These defines apply | |
401 | * to the directly accessible io ports of the ECP. There is a set of | |
402 | * defines for each ECP board type, ISA, EISA, MCA and PCI. | |
403 | */ | |
404 | #define ECP_IOSIZE 4 | |
405 | ||
406 | #define ECP_MEMSIZE (128 * 1024) | |
407 | #define ECP_PCIMEMSIZE (256 * 1024) | |
408 | ||
409 | #define ECP_ATPAGESIZE (4 * 1024) | |
410 | #define ECP_MCPAGESIZE (4 * 1024) | |
411 | #define ECP_EIPAGESIZE (64 * 1024) | |
412 | #define ECP_PCIPAGESIZE (64 * 1024) | |
413 | ||
414 | #define STL_EISAID 0x8c4e | |
415 | ||
416 | /* | |
417 | * Important defines for the ISA class of ECP board. | |
418 | */ | |
419 | #define ECP_ATIREG 0 | |
420 | #define ECP_ATCONFR 1 | |
421 | #define ECP_ATMEMAR 2 | |
422 | #define ECP_ATMEMPR 3 | |
423 | #define ECP_ATSTOP 0x1 | |
424 | #define ECP_ATINTENAB 0x10 | |
425 | #define ECP_ATENABLE 0x20 | |
426 | #define ECP_ATDISABLE 0x00 | |
427 | #define ECP_ATADDRMASK 0x3f000 | |
428 | #define ECP_ATADDRSHFT 12 | |
429 | ||
430 | /* | |
431 | * Important defines for the EISA class of ECP board. | |
432 | */ | |
433 | #define ECP_EIIREG 0 | |
434 | #define ECP_EIMEMARL 1 | |
435 | #define ECP_EICONFR 2 | |
436 | #define ECP_EIMEMARH 3 | |
437 | #define ECP_EIENABLE 0x1 | |
438 | #define ECP_EIDISABLE 0x0 | |
439 | #define ECP_EISTOP 0x4 | |
440 | #define ECP_EIEDGE 0x00 | |
441 | #define ECP_EILEVEL 0x80 | |
442 | #define ECP_EIADDRMASKL 0x00ff0000 | |
443 | #define ECP_EIADDRSHFTL 16 | |
444 | #define ECP_EIADDRMASKH 0xff000000 | |
445 | #define ECP_EIADDRSHFTH 24 | |
446 | #define ECP_EIBRDENAB 0xc84 | |
447 | ||
448 | #define ECP_EISAID 0x4 | |
449 | ||
450 | /* | |
451 | * Important defines for the Micro-channel class of ECP board. | |
452 | * (It has a lot in common with the ISA boards.) | |
453 | */ | |
454 | #define ECP_MCIREG 0 | |
455 | #define ECP_MCCONFR 1 | |
456 | #define ECP_MCSTOP 0x20 | |
457 | #define ECP_MCENABLE 0x80 | |
458 | #define ECP_MCDISABLE 0x00 | |
459 | ||
460 | /* | |
461 | * Important defines for the PCI class of ECP board. | |
462 | * (It has a lot in common with the other ECP boards.) | |
463 | */ | |
464 | #define ECP_PCIIREG 0 | |
465 | #define ECP_PCICONFR 1 | |
466 | #define ECP_PCISTOP 0x01 | |
467 | ||
468 | /* | |
469 | * Hardware configuration info for ONboard and Brumby boards. These | |
470 | * defines apply to the directly accessible io ports of these boards. | |
471 | */ | |
472 | #define ONB_IOSIZE 16 | |
473 | #define ONB_MEMSIZE (64 * 1024) | |
474 | #define ONB_ATPAGESIZE (64 * 1024) | |
475 | #define ONB_MCPAGESIZE (64 * 1024) | |
476 | #define ONB_EIMEMSIZE (128 * 1024) | |
477 | #define ONB_EIPAGESIZE (64 * 1024) | |
478 | ||
479 | /* | |
480 | * Important defines for the ISA class of ONboard board. | |
481 | */ | |
482 | #define ONB_ATIREG 0 | |
483 | #define ONB_ATMEMAR 1 | |
484 | #define ONB_ATCONFR 2 | |
485 | #define ONB_ATSTOP 0x4 | |
486 | #define ONB_ATENABLE 0x01 | |
487 | #define ONB_ATDISABLE 0x00 | |
488 | #define ONB_ATADDRMASK 0xff0000 | |
489 | #define ONB_ATADDRSHFT 16 | |
490 | ||
491 | #define ONB_MEMENABLO 0 | |
492 | #define ONB_MEMENABHI 0x02 | |
493 | ||
494 | /* | |
495 | * Important defines for the EISA class of ONboard board. | |
496 | */ | |
497 | #define ONB_EIIREG 0 | |
498 | #define ONB_EIMEMARL 1 | |
499 | #define ONB_EICONFR 2 | |
500 | #define ONB_EIMEMARH 3 | |
501 | #define ONB_EIENABLE 0x1 | |
502 | #define ONB_EIDISABLE 0x0 | |
503 | #define ONB_EISTOP 0x4 | |
504 | #define ONB_EIEDGE 0x00 | |
505 | #define ONB_EILEVEL 0x80 | |
506 | #define ONB_EIADDRMASKL 0x00ff0000 | |
507 | #define ONB_EIADDRSHFTL 16 | |
508 | #define ONB_EIADDRMASKH 0xff000000 | |
509 | #define ONB_EIADDRSHFTH 24 | |
510 | #define ONB_EIBRDENAB 0xc84 | |
511 | ||
512 | #define ONB_EISAID 0x1 | |
513 | ||
514 | /* | |
515 | * Important defines for the Brumby boards. They are pretty simple, | |
516 | * there is not much that is programmably configurable. | |
517 | */ | |
518 | #define BBY_IOSIZE 16 | |
519 | #define BBY_MEMSIZE (64 * 1024) | |
520 | #define BBY_PAGESIZE (16 * 1024) | |
521 | ||
522 | #define BBY_ATIREG 0 | |
523 | #define BBY_ATCONFR 1 | |
524 | #define BBY_ATSTOP 0x4 | |
525 | ||
526 | /* | |
527 | * Important defines for the Stallion boards. They are pretty simple, | |
528 | * there is not much that is programmably configurable. | |
529 | */ | |
530 | #define STAL_IOSIZE 16 | |
531 | #define STAL_MEMSIZE (64 * 1024) | |
532 | #define STAL_PAGESIZE (64 * 1024) | |
533 | ||
534 | /* | |
535 | * Define the set of status register values for EasyConnection panels. | |
536 | * The signature will return with the status value for each panel. From | |
537 | * this we can determine what is attached to the board - before we have | |
538 | * actually down loaded any code to it. | |
539 | */ | |
540 | #define ECH_PNLSTATUS 2 | |
541 | #define ECH_PNL16PORT 0x20 | |
542 | #define ECH_PNLIDMASK 0x07 | |
543 | #define ECH_PNLXPID 0x40 | |
544 | #define ECH_PNLINTRPEND 0x80 | |
545 | ||
546 | /* | |
547 | * Define some macros to do things to the board. Even those these boards | |
548 | * are somewhat related there is often significantly different ways of | |
549 | * doing some operation on it (like enable, paging, reset, etc). So each | |
550 | * board class has a set of functions which do the commonly required | |
551 | * operations. The macros below basically just call these functions, | |
552 | * generally checking for a NULL function - which means that the board | |
553 | * needs nothing done to it to achieve this operation! | |
554 | */ | |
555 | #define EBRDINIT(brdp) \ | |
556 | if (brdp->init != NULL) \ | |
557 | (* brdp->init)(brdp) | |
558 | ||
559 | #define EBRDENABLE(brdp) \ | |
560 | if (brdp->enable != NULL) \ | |
561 | (* brdp->enable)(brdp); | |
562 | ||
563 | #define EBRDDISABLE(brdp) \ | |
564 | if (brdp->disable != NULL) \ | |
565 | (* brdp->disable)(brdp); | |
566 | ||
567 | #define EBRDINTR(brdp) \ | |
568 | if (brdp->intr != NULL) \ | |
569 | (* brdp->intr)(brdp); | |
570 | ||
571 | #define EBRDRESET(brdp) \ | |
572 | if (brdp->reset != NULL) \ | |
573 | (* brdp->reset)(brdp); | |
574 | ||
575 | #define EBRDGETMEMPTR(brdp,offset) \ | |
576 | (* brdp->getmemptr)(brdp, offset, __LINE__) | |
577 | ||
578 | /* | |
579 | * Define the maximal baud rate, and the default baud base for ports. | |
580 | */ | |
581 | #define STL_MAXBAUD 460800 | |
582 | #define STL_BAUDBASE 115200 | |
583 | #define STL_CLOSEDELAY (5 * HZ / 10) | |
584 | ||
585 | /*****************************************************************************/ | |
586 | ||
587 | /* | |
588 | * Define macros to extract a brd or port number from a minor number. | |
589 | */ | |
590 | #define MINOR2BRD(min) (((min) & 0xc0) >> 6) | |
591 | #define MINOR2PORT(min) ((min) & 0x3f) | |
592 | ||
1da177e4 LT |
593 | /*****************************************************************************/ |
594 | ||
1da177e4 LT |
595 | /* |
596 | * Prototype all functions in this driver! | |
597 | */ | |
598 | ||
1f8ec435 | 599 | static int stli_parsebrd(struct stlconf *confp, char **argp); |
1da177e4 LT |
600 | static int stli_open(struct tty_struct *tty, struct file *filp); |
601 | static void stli_close(struct tty_struct *tty, struct file *filp); | |
602 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); | |
42a77a1b | 603 | static int stli_putchar(struct tty_struct *tty, unsigned char ch); |
1da177e4 LT |
604 | static void stli_flushchars(struct tty_struct *tty); |
605 | static int stli_writeroom(struct tty_struct *tty); | |
606 | static int stli_charsinbuffer(struct tty_struct *tty); | |
607 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); | |
606d099c | 608 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old); |
1da177e4 LT |
609 | static void stli_throttle(struct tty_struct *tty); |
610 | static void stli_unthrottle(struct tty_struct *tty); | |
611 | static void stli_stop(struct tty_struct *tty); | |
612 | static void stli_start(struct tty_struct *tty); | |
613 | static void stli_flushbuffer(struct tty_struct *tty); | |
9e98966c | 614 | static int stli_breakctl(struct tty_struct *tty, int state); |
1da177e4 LT |
615 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); |
616 | static void stli_sendxchar(struct tty_struct *tty, char ch); | |
617 | static void stli_hangup(struct tty_struct *tty); | |
1da177e4 | 618 | |
1f8ec435 JS |
619 | static int stli_brdinit(struct stlibrd *brdp); |
620 | static int stli_startbrd(struct stlibrd *brdp); | |
1da177e4 LT |
621 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); |
622 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); | |
62687538 | 623 | static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg); |
1f8ec435 | 624 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp); |
1da177e4 | 625 | static void stli_poll(unsigned long arg); |
1f8ec435 | 626 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp); |
d18a750f | 627 | static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp); |
1f8ec435 JS |
628 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); |
629 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); | |
d18a750f | 630 | static int stli_setport(struct tty_struct *tty); |
1f8ec435 JS |
631 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); |
632 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
633 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
634 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp); | |
d18a750f | 635 | static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp); |
1da177e4 LT |
636 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); |
637 | static long stli_mktiocm(unsigned long sigvalue); | |
1f8ec435 JS |
638 | static void stli_read(struct stlibrd *brdp, struct stliport *portp); |
639 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp); | |
d18a750f | 640 | static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp); |
1da177e4 | 641 | static int stli_getbrdstats(combrd_t __user *bp); |
d18a750f AC |
642 | static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp); |
643 | static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp); | |
1f8ec435 JS |
644 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp); |
645 | static int stli_getportstruct(struct stliport __user *arg); | |
646 | static int stli_getbrdstruct(struct stlibrd __user *arg); | |
647 | static struct stlibrd *stli_allocbrd(void); | |
648 | ||
649 | static void stli_ecpinit(struct stlibrd *brdp); | |
650 | static void stli_ecpenable(struct stlibrd *brdp); | |
651 | static void stli_ecpdisable(struct stlibrd *brdp); | |
652 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
653 | static void stli_ecpreset(struct stlibrd *brdp); | |
654 | static void stli_ecpintr(struct stlibrd *brdp); | |
655 | static void stli_ecpeiinit(struct stlibrd *brdp); | |
656 | static void stli_ecpeienable(struct stlibrd *brdp); | |
657 | static void stli_ecpeidisable(struct stlibrd *brdp); | |
658 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
659 | static void stli_ecpeireset(struct stlibrd *brdp); | |
660 | static void stli_ecpmcenable(struct stlibrd *brdp); | |
661 | static void stli_ecpmcdisable(struct stlibrd *brdp); | |
662 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
663 | static void stli_ecpmcreset(struct stlibrd *brdp); | |
664 | static void stli_ecppciinit(struct stlibrd *brdp); | |
665 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
666 | static void stli_ecppcireset(struct stlibrd *brdp); | |
667 | ||
668 | static void stli_onbinit(struct stlibrd *brdp); | |
669 | static void stli_onbenable(struct stlibrd *brdp); | |
670 | static void stli_onbdisable(struct stlibrd *brdp); | |
671 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
672 | static void stli_onbreset(struct stlibrd *brdp); | |
673 | static void stli_onbeinit(struct stlibrd *brdp); | |
674 | static void stli_onbeenable(struct stlibrd *brdp); | |
675 | static void stli_onbedisable(struct stlibrd *brdp); | |
676 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
677 | static void stli_onbereset(struct stlibrd *brdp); | |
678 | static void stli_bbyinit(struct stlibrd *brdp); | |
679 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
680 | static void stli_bbyreset(struct stlibrd *brdp); | |
681 | static void stli_stalinit(struct stlibrd *brdp); | |
682 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
683 | static void stli_stalreset(struct stlibrd *brdp); | |
684 | ||
1328d737 | 685 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr); |
1f8ec435 JS |
686 | |
687 | static int stli_initecp(struct stlibrd *brdp); | |
688 | static int stli_initonb(struct stlibrd *brdp); | |
a00f33f3 | 689 | #if STLI_EISAPROBE != 0 |
1f8ec435 | 690 | static int stli_eisamemprobe(struct stlibrd *brdp); |
a00f33f3 | 691 | #endif |
1f8ec435 | 692 | static int stli_initports(struct stlibrd *brdp); |
1da177e4 | 693 | |
1da177e4 LT |
694 | /*****************************************************************************/ |
695 | ||
696 | /* | |
697 | * Define the driver info for a user level shared memory device. This | |
698 | * device will work sort of like the /dev/kmem device - except that it | |
699 | * will give access to the shared memory on the Stallion intelligent | |
700 | * board. This is also a very useful debugging tool. | |
701 | */ | |
62322d25 | 702 | static const struct file_operations stli_fsiomem = { |
1da177e4 LT |
703 | .owner = THIS_MODULE, |
704 | .read = stli_memread, | |
705 | .write = stli_memwrite, | |
62687538 | 706 | .unlocked_ioctl = stli_memioctl, |
1da177e4 LT |
707 | }; |
708 | ||
709 | /*****************************************************************************/ | |
710 | ||
711 | /* | |
712 | * Define a timer_list entry for our poll routine. The slave board | |
713 | * is polled every so often to see if anything needs doing. This is | |
714 | * much cheaper on host cpu than using interrupts. It turns out to | |
715 | * not increase character latency by much either... | |
716 | */ | |
8d06afab | 717 | static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); |
1da177e4 LT |
718 | |
719 | static int stli_timeron; | |
720 | ||
721 | /* | |
722 | * Define the calculation for the timeout routine. | |
723 | */ | |
724 | #define STLI_TIMEOUT (jiffies + 1) | |
725 | ||
726 | /*****************************************************************************/ | |
727 | ||
ca8eca68 | 728 | static struct class *istallion_class; |
1da177e4 | 729 | |
1f8ec435 | 730 | static void stli_cleanup_ports(struct stlibrd *brdp) |
845bead4 | 731 | { |
1f8ec435 | 732 | struct stliport *portp; |
845bead4 | 733 | unsigned int j; |
d18a750f | 734 | struct tty_struct *tty; |
845bead4 JS |
735 | |
736 | for (j = 0; j < STL_MAXPORTS; j++) { | |
737 | portp = brdp->ports[j]; | |
738 | if (portp != NULL) { | |
d18a750f AC |
739 | tty = tty_port_tty_get(&portp->port); |
740 | if (tty != NULL) { | |
741 | tty_hangup(tty); | |
742 | tty_kref_put(tty); | |
743 | } | |
845bead4 JS |
744 | kfree(portp); |
745 | } | |
746 | } | |
747 | } | |
748 | ||
1da177e4 LT |
749 | /*****************************************************************************/ |
750 | ||
1da177e4 LT |
751 | /* |
752 | * Parse the supplied argument string, into the board conf struct. | |
753 | */ | |
754 | ||
1f8ec435 | 755 | static int stli_parsebrd(struct stlconf *confp, char **argp) |
1da177e4 | 756 | { |
1328d737 | 757 | unsigned int i; |
4ac4360b | 758 | char *sp; |
1da177e4 | 759 | |
4ac4360b AC |
760 | if (argp[0] == NULL || *argp[0] == 0) |
761 | return 0; | |
1da177e4 LT |
762 | |
763 | for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) | |
a3f8d9d5 | 764 | *sp = tolower(*sp); |
1da177e4 | 765 | |
fe971071 | 766 | for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) { |
1da177e4 LT |
767 | if (strcmp(stli_brdstr[i].name, argp[0]) == 0) |
768 | break; | |
769 | } | |
fe971071 | 770 | if (i == ARRAY_SIZE(stli_brdstr)) { |
a6614999 | 771 | printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]); |
fe971071 | 772 | return 0; |
1da177e4 LT |
773 | } |
774 | ||
775 | confp->brdtype = stli_brdstr[i].type; | |
4ac4360b | 776 | if (argp[1] != NULL && *argp[1] != 0) |
a3f8d9d5 | 777 | confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0); |
4ac4360b | 778 | if (argp[2] != NULL && *argp[2] != 0) |
a3f8d9d5 | 779 | confp->memaddr = simple_strtoul(argp[2], NULL, 0); |
1da177e4 LT |
780 | return(1); |
781 | } | |
782 | ||
1da177e4 LT |
783 | /*****************************************************************************/ |
784 | ||
338818fd AC |
785 | /* |
786 | * On the first open of the device setup the port hardware, and | |
787 | * initialize the per port data structure. Since initializing the port | |
788 | * requires several commands to the board we will need to wait for any | |
789 | * other open that is already initializing the port. | |
790 | * | |
791 | * Locking: protected by the port mutex. | |
792 | */ | |
793 | ||
794 | static int stli_activate(struct tty_port *port, struct tty_struct *tty) | |
795 | { | |
796 | struct stliport *portp = container_of(port, struct stliport, port); | |
797 | struct stlibrd *brdp = stli_brds[portp->brdnr]; | |
798 | int rc; | |
799 | ||
800 | if ((rc = stli_initopen(tty, brdp, portp)) >= 0) | |
801 | clear_bit(TTY_IO_ERROR, &tty->flags); | |
802 | wake_up_interruptible(&portp->raw_wait); | |
803 | return rc; | |
804 | } | |
805 | ||
1da177e4 LT |
806 | static int stli_open(struct tty_struct *tty, struct file *filp) |
807 | { | |
1f8ec435 JS |
808 | struct stlibrd *brdp; |
809 | struct stliport *portp; | |
1328d737 | 810 | unsigned int minordev, brdnr, portnr; |
1da177e4 LT |
811 | |
812 | minordev = tty->index; | |
813 | brdnr = MINOR2BRD(minordev); | |
814 | if (brdnr >= stli_nrbrds) | |
4ac4360b | 815 | return -ENODEV; |
1da177e4 | 816 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
817 | if (brdp == NULL) |
818 | return -ENODEV; | |
1da177e4 | 819 | if ((brdp->state & BST_STARTED) == 0) |
4ac4360b | 820 | return -ENODEV; |
1da177e4 | 821 | portnr = MINOR2PORT(minordev); |
1328d737 | 822 | if (portnr > brdp->nrports) |
4ac4360b | 823 | return -ENODEV; |
1da177e4 LT |
824 | |
825 | portp = brdp->ports[portnr]; | |
4ac4360b AC |
826 | if (portp == NULL) |
827 | return -ENODEV; | |
1da177e4 | 828 | if (portp->devnr < 1) |
4ac4360b | 829 | return -ENODEV; |
a2d1e351 AC |
830 | |
831 | tty->driver_data = portp; | |
338818fd | 832 | return tty_port_open(&portp->port, tty, filp); |
1da177e4 LT |
833 | } |
834 | ||
338818fd | 835 | |
1da177e4 LT |
836 | /*****************************************************************************/ |
837 | ||
338818fd | 838 | static void stli_shutdown(struct tty_port *port) |
1da177e4 | 839 | { |
1f8ec435 | 840 | struct stlibrd *brdp; |
338818fd | 841 | unsigned long ftype; |
4ac4360b | 842 | unsigned long flags; |
338818fd | 843 | struct stliport *portp = container_of(port, struct stliport, port); |
1da177e4 | 844 | |
338818fd | 845 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 | 846 | return; |
338818fd AC |
847 | brdp = stli_brds[portp->brdnr]; |
848 | if (brdp == NULL) | |
1da177e4 | 849 | return; |
1da177e4 | 850 | |
338818fd AC |
851 | /* |
852 | * May want to wait for data to drain before closing. The BUSY | |
853 | * flag keeps track of whether we are still transmitting or not. | |
854 | * It is updated by messages from the slave - indicating when all | |
855 | * chars really have drained. | |
856 | */ | |
1da177e4 | 857 | |
338818fd AC |
858 | if (!test_bit(ST_CLOSING, &portp->state)) |
859 | stli_rawclose(brdp, portp, 0, 0); | |
2a6eadbd | 860 | |
338818fd | 861 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
862 | clear_bit(ST_TXBUSY, &portp->state); |
863 | clear_bit(ST_RXSTOP, &portp->state); | |
338818fd | 864 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 | 865 | |
338818fd AC |
866 | ftype = FLUSHTX | FLUSHRX; |
867 | stli_cmdwait(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); | |
868 | } | |
869 | ||
870 | static void stli_close(struct tty_struct *tty, struct file *filp) | |
871 | { | |
872 | struct stliport *portp = tty->driver_data; | |
873 | unsigned long flags; | |
874 | if (portp == NULL) | |
875 | return; | |
876 | spin_lock_irqsave(&stli_lock, flags); | |
877 | /* Flush any internal buffering out first */ | |
878 | if (tty == stli_txcooktty) | |
879 | stli_flushchars(tty); | |
880 | spin_unlock_irqrestore(&stli_lock, flags); | |
881 | tty_port_close(&portp->port, tty, filp); | |
1da177e4 LT |
882 | } |
883 | ||
884 | /*****************************************************************************/ | |
885 | ||
886 | /* | |
887 | * Carry out first open operations on a port. This involves a number of | |
888 | * commands to be sent to the slave. We need to open the port, set the | |
889 | * notification events, set the initial port settings, get and set the | |
890 | * initial signal values. We sleep and wait in between each one. But | |
891 | * this still all happens pretty quickly. | |
892 | */ | |
893 | ||
d18a750f AC |
894 | static int stli_initopen(struct tty_struct *tty, |
895 | struct stlibrd *brdp, struct stliport *portp) | |
1da177e4 | 896 | { |
4ac4360b AC |
897 | asynotify_t nt; |
898 | asyport_t aport; | |
899 | int rc; | |
1da177e4 LT |
900 | |
901 | if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) | |
4ac4360b | 902 | return rc; |
1da177e4 LT |
903 | |
904 | memset(&nt, 0, sizeof(asynotify_t)); | |
905 | nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); | |
906 | nt.signal = SG_DCD; | |
907 | if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, | |
908 | sizeof(asynotify_t), 0)) < 0) | |
4ac4360b | 909 | return rc; |
1da177e4 | 910 | |
d18a750f | 911 | stli_mkasyport(tty, portp, &aport, tty->termios); |
1da177e4 LT |
912 | if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, |
913 | sizeof(asyport_t), 0)) < 0) | |
4ac4360b | 914 | return rc; |
1da177e4 LT |
915 | |
916 | set_bit(ST_GETSIGS, &portp->state); | |
917 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, | |
918 | sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 919 | return rc; |
1da177e4 LT |
920 | if (test_and_clear_bit(ST_GETSIGS, &portp->state)) |
921 | portp->sigs = stli_mktiocm(portp->asig.sigvalue); | |
922 | stli_mkasysigs(&portp->asig, 1, 1); | |
923 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
924 | sizeof(asysigs_t), 0)) < 0) | |
4ac4360b | 925 | return rc; |
1da177e4 | 926 | |
4ac4360b | 927 | return 0; |
1da177e4 LT |
928 | } |
929 | ||
930 | /*****************************************************************************/ | |
931 | ||
932 | /* | |
933 | * Send an open message to the slave. This will sleep waiting for the | |
934 | * acknowledgement, so must have user context. We need to co-ordinate | |
935 | * with close events here, since we don't want open and close events | |
936 | * to overlap. | |
937 | */ | |
938 | ||
1f8ec435 | 939 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 940 | { |
4ac4360b AC |
941 | cdkhdr_t __iomem *hdrp; |
942 | cdkctrl_t __iomem *cp; | |
943 | unsigned char __iomem *bits; | |
944 | unsigned long flags; | |
945 | int rc; | |
1da177e4 LT |
946 | |
947 | /* | |
948 | * Send a message to the slave to open this port. | |
949 | */ | |
1da177e4 LT |
950 | |
951 | /* | |
952 | * Slave is already closing this port. This can happen if a hangup | |
953 | * occurs on this port. So we must wait until it is complete. The | |
954 | * order of opens and closes may not be preserved across shared | |
955 | * memory, so we must wait until it is complete. | |
956 | */ | |
957 | wait_event_interruptible(portp->raw_wait, | |
958 | !test_bit(ST_CLOSING, &portp->state)); | |
959 | if (signal_pending(current)) { | |
1da177e4 LT |
960 | return -ERESTARTSYS; |
961 | } | |
962 | ||
963 | /* | |
964 | * Everything is ready now, so write the open message into shared | |
965 | * memory. Once the message is in set the service bits to say that | |
966 | * this port wants service. | |
967 | */ | |
4ac4360b | 968 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 969 | EBRDENABLE(brdp); |
4ac4360b AC |
970 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
971 | writel(arg, &cp->openarg); | |
972 | writeb(1, &cp->open); | |
973 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
974 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 975 | portp->portidx; |
4ac4360b | 976 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
977 | EBRDDISABLE(brdp); |
978 | ||
979 | if (wait == 0) { | |
4ac4360b AC |
980 | spin_unlock_irqrestore(&brd_lock, flags); |
981 | return 0; | |
1da177e4 LT |
982 | } |
983 | ||
984 | /* | |
985 | * Slave is in action, so now we must wait for the open acknowledgment | |
986 | * to come back. | |
987 | */ | |
988 | rc = 0; | |
989 | set_bit(ST_OPENING, &portp->state); | |
4ac4360b AC |
990 | spin_unlock_irqrestore(&brd_lock, flags); |
991 | ||
1da177e4 LT |
992 | wait_event_interruptible(portp->raw_wait, |
993 | !test_bit(ST_OPENING, &portp->state)); | |
994 | if (signal_pending(current)) | |
995 | rc = -ERESTARTSYS; | |
1da177e4 LT |
996 | |
997 | if ((rc == 0) && (portp->rc != 0)) | |
998 | rc = -EIO; | |
4ac4360b | 999 | return rc; |
1da177e4 LT |
1000 | } |
1001 | ||
1002 | /*****************************************************************************/ | |
1003 | ||
1004 | /* | |
1005 | * Send a close message to the slave. Normally this will sleep waiting | |
1006 | * for the acknowledgement, but if wait parameter is 0 it will not. If | |
1007 | * wait is true then must have user context (to sleep). | |
1008 | */ | |
1009 | ||
1f8ec435 | 1010 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 1011 | { |
4ac4360b AC |
1012 | cdkhdr_t __iomem *hdrp; |
1013 | cdkctrl_t __iomem *cp; | |
1014 | unsigned char __iomem *bits; | |
1015 | unsigned long flags; | |
1016 | int rc; | |
1da177e4 LT |
1017 | |
1018 | /* | |
1019 | * Slave is already closing this port. This can happen if a hangup | |
1020 | * occurs on this port. | |
1021 | */ | |
1022 | if (wait) { | |
1023 | wait_event_interruptible(portp->raw_wait, | |
1024 | !test_bit(ST_CLOSING, &portp->state)); | |
1025 | if (signal_pending(current)) { | |
1da177e4 LT |
1026 | return -ERESTARTSYS; |
1027 | } | |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * Write the close command into shared memory. | |
1032 | */ | |
4ac4360b | 1033 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1034 | EBRDENABLE(brdp); |
4ac4360b AC |
1035 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1036 | writel(arg, &cp->closearg); | |
1037 | writeb(1, &cp->close); | |
1038 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1039 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1040 | portp->portidx; |
4ac4360b | 1041 | writeb(readb(bits) |portp->portbit, bits); |
1da177e4 LT |
1042 | EBRDDISABLE(brdp); |
1043 | ||
1044 | set_bit(ST_CLOSING, &portp->state); | |
4ac4360b AC |
1045 | spin_unlock_irqrestore(&brd_lock, flags); |
1046 | ||
1047 | if (wait == 0) | |
1048 | return 0; | |
1da177e4 LT |
1049 | |
1050 | /* | |
1051 | * Slave is in action, so now we must wait for the open acknowledgment | |
1052 | * to come back. | |
1053 | */ | |
1054 | rc = 0; | |
1055 | wait_event_interruptible(portp->raw_wait, | |
1056 | !test_bit(ST_CLOSING, &portp->state)); | |
1057 | if (signal_pending(current)) | |
1058 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1059 | |
1060 | if ((rc == 0) && (portp->rc != 0)) | |
1061 | rc = -EIO; | |
4ac4360b | 1062 | return rc; |
1da177e4 LT |
1063 | } |
1064 | ||
1065 | /*****************************************************************************/ | |
1066 | ||
1067 | /* | |
1068 | * Send a command to the slave and wait for the response. This must | |
1069 | * have user context (it sleeps). This routine is generic in that it | |
1070 | * can send any type of command. Its purpose is to wait for that command | |
1071 | * to complete (as opposed to initiating the command then returning). | |
1072 | */ | |
1073 | ||
1f8ec435 | 1074 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 1075 | { |
1da177e4 LT |
1076 | wait_event_interruptible(portp->raw_wait, |
1077 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1078 | if (signal_pending(current)) |
1da177e4 | 1079 | return -ERESTARTSYS; |
1da177e4 LT |
1080 | |
1081 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
1082 | ||
1083 | wait_event_interruptible(portp->raw_wait, | |
1084 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1085 | if (signal_pending(current)) |
1da177e4 | 1086 | return -ERESTARTSYS; |
1da177e4 LT |
1087 | |
1088 | if (portp->rc != 0) | |
4ac4360b AC |
1089 | return -EIO; |
1090 | return 0; | |
1da177e4 LT |
1091 | } |
1092 | ||
1093 | /*****************************************************************************/ | |
1094 | ||
1095 | /* | |
1096 | * Send the termios settings for this port to the slave. This sleeps | |
1097 | * waiting for the command to complete - so must have user context. | |
1098 | */ | |
1099 | ||
d18a750f | 1100 | static int stli_setport(struct tty_struct *tty) |
1da177e4 | 1101 | { |
d18a750f | 1102 | struct stliport *portp = tty->driver_data; |
1f8ec435 | 1103 | struct stlibrd *brdp; |
4ac4360b | 1104 | asyport_t aport; |
1da177e4 | 1105 | |
4ac4360b AC |
1106 | if (portp == NULL) |
1107 | return -ENODEV; | |
1328d737 | 1108 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1109 | return -ENODEV; |
1da177e4 | 1110 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1111 | if (brdp == NULL) |
1112 | return -ENODEV; | |
1da177e4 | 1113 | |
d18a750f | 1114 | stli_mkasyport(tty, portp, &aport, tty->termios); |
1da177e4 LT |
1115 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); |
1116 | } | |
1117 | ||
1118 | /*****************************************************************************/ | |
1119 | ||
31f35939 AC |
1120 | static int stli_carrier_raised(struct tty_port *port) |
1121 | { | |
1122 | struct stliport *portp = container_of(port, struct stliport, port); | |
1123 | return (portp->sigs & TIOCM_CD) ? 1 : 0; | |
1124 | } | |
1125 | ||
fcc8ac18 | 1126 | static void stli_dtr_rts(struct tty_port *port, int on) |
1da177e4 | 1127 | { |
2a6eadbd AC |
1128 | struct stliport *portp = container_of(port, struct stliport, port); |
1129 | struct stlibrd *brdp = stli_brds[portp->brdnr]; | |
fcc8ac18 | 1130 | stli_mkasysigs(&portp->asig, on, on); |
2a6eadbd AC |
1131 | if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, |
1132 | sizeof(asysigs_t), 0) < 0) | |
fcc8ac18 | 1133 | printk(KERN_WARNING "istallion: dtr set failed.\n"); |
1da177e4 LT |
1134 | } |
1135 | ||
2a6eadbd | 1136 | |
1da177e4 LT |
1137 | /*****************************************************************************/ |
1138 | ||
1139 | /* | |
1140 | * Write routine. Take the data and put it in the shared memory ring | |
1141 | * queue. If port is not already sending chars then need to mark the | |
1142 | * service bits for this port. | |
1143 | */ | |
1144 | ||
1145 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1146 | { | |
4ac4360b AC |
1147 | cdkasy_t __iomem *ap; |
1148 | cdkhdr_t __iomem *hdrp; | |
1149 | unsigned char __iomem *bits; | |
1150 | unsigned char __iomem *shbuf; | |
1151 | unsigned char *chbuf; | |
1f8ec435 JS |
1152 | struct stliport *portp; |
1153 | struct stlibrd *brdp; | |
4ac4360b AC |
1154 | unsigned int len, stlen, head, tail, size; |
1155 | unsigned long flags; | |
1da177e4 | 1156 | |
1da177e4 LT |
1157 | if (tty == stli_txcooktty) |
1158 | stli_flushchars(tty); | |
1159 | portp = tty->driver_data; | |
4ac4360b AC |
1160 | if (portp == NULL) |
1161 | return 0; | |
1328d737 | 1162 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1163 | return 0; |
1da177e4 | 1164 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1165 | if (brdp == NULL) |
1166 | return 0; | |
1da177e4 LT |
1167 | chbuf = (unsigned char *) buf; |
1168 | ||
1169 | /* | |
1170 | * All data is now local, shove as much as possible into shared memory. | |
1171 | */ | |
4ac4360b | 1172 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1173 | EBRDENABLE(brdp); |
4ac4360b AC |
1174 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1175 | head = (unsigned int) readw(&ap->txq.head); | |
1176 | tail = (unsigned int) readw(&ap->txq.tail); | |
1177 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1178 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1179 | size = portp->txsize; |
1180 | if (head >= tail) { | |
1181 | len = size - (head - tail) - 1; | |
1182 | stlen = size - head; | |
1183 | } else { | |
1184 | len = tail - head - 1; | |
1185 | stlen = len; | |
1186 | } | |
1187 | ||
a3f8d9d5 | 1188 | len = min(len, (unsigned int)count); |
1da177e4 | 1189 | count = 0; |
4ac4360b | 1190 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1191 | |
1192 | while (len > 0) { | |
a3f8d9d5 | 1193 | stlen = min(len, stlen); |
4ac4360b | 1194 | memcpy_toio(shbuf + head, chbuf, stlen); |
1da177e4 LT |
1195 | chbuf += stlen; |
1196 | len -= stlen; | |
1197 | count += stlen; | |
1198 | head += stlen; | |
1199 | if (head >= size) { | |
1200 | head = 0; | |
1201 | stlen = tail; | |
1202 | } | |
1203 | } | |
1204 | ||
4ac4360b AC |
1205 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1206 | writew(head, &ap->txq.head); | |
1da177e4 | 1207 | if (test_bit(ST_TXBUSY, &portp->state)) { |
4ac4360b AC |
1208 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1209 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1210 | } |
4ac4360b AC |
1211 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1212 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1213 | portp->portidx; |
4ac4360b | 1214 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1215 | set_bit(ST_TXBUSY, &portp->state); |
1216 | EBRDDISABLE(brdp); | |
4ac4360b | 1217 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1218 | |
1219 | return(count); | |
1220 | } | |
1221 | ||
1222 | /*****************************************************************************/ | |
1223 | ||
1224 | /* | |
1225 | * Output a single character. We put it into a temporary local buffer | |
1226 | * (for speed) then write out that buffer when the flushchars routine | |
1227 | * is called. There is a safety catch here so that if some other port | |
1228 | * writes chars before the current buffer has been, then we write them | |
1229 | * first them do the new ports. | |
1230 | */ | |
1231 | ||
42a77a1b | 1232 | static int stli_putchar(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1233 | { |
1da177e4 | 1234 | if (tty != stli_txcooktty) { |
4ac4360b | 1235 | if (stli_txcooktty != NULL) |
1da177e4 LT |
1236 | stli_flushchars(stli_txcooktty); |
1237 | stli_txcooktty = tty; | |
1238 | } | |
1239 | ||
1240 | stli_txcookbuf[stli_txcooksize++] = ch; | |
42a77a1b | 1241 | return 0; |
1da177e4 LT |
1242 | } |
1243 | ||
1244 | /*****************************************************************************/ | |
1245 | ||
1246 | /* | |
1247 | * Transfer characters from the local TX cooking buffer to the board. | |
1248 | * We sort of ignore the tty that gets passed in here. We rely on the | |
1249 | * info stored with the TX cook buffer to tell us which port to flush | |
1250 | * the data on. In any case we clean out the TX cook buffer, for re-use | |
1251 | * by someone else. | |
1252 | */ | |
1253 | ||
1254 | static void stli_flushchars(struct tty_struct *tty) | |
1255 | { | |
4ac4360b AC |
1256 | cdkhdr_t __iomem *hdrp; |
1257 | unsigned char __iomem *bits; | |
1258 | cdkasy_t __iomem *ap; | |
1259 | struct tty_struct *cooktty; | |
1f8ec435 JS |
1260 | struct stliport *portp; |
1261 | struct stlibrd *brdp; | |
4ac4360b AC |
1262 | unsigned int len, stlen, head, tail, size, count, cooksize; |
1263 | unsigned char *buf; | |
1264 | unsigned char __iomem *shbuf; | |
1265 | unsigned long flags; | |
1da177e4 LT |
1266 | |
1267 | cooksize = stli_txcooksize; | |
1268 | cooktty = stli_txcooktty; | |
1269 | stli_txcooksize = 0; | |
1270 | stli_txcookrealsize = 0; | |
4ac4360b | 1271 | stli_txcooktty = NULL; |
1da177e4 | 1272 | |
4ac4360b | 1273 | if (cooktty == NULL) |
1da177e4 LT |
1274 | return; |
1275 | if (tty != cooktty) | |
1276 | tty = cooktty; | |
1277 | if (cooksize == 0) | |
1278 | return; | |
1279 | ||
1280 | portp = tty->driver_data; | |
4ac4360b | 1281 | if (portp == NULL) |
1da177e4 | 1282 | return; |
1328d737 | 1283 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1284 | return; |
1285 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1286 | if (brdp == NULL) |
1da177e4 LT |
1287 | return; |
1288 | ||
4ac4360b | 1289 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
1290 | EBRDENABLE(brdp); |
1291 | ||
4ac4360b AC |
1292 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1293 | head = (unsigned int) readw(&ap->txq.head); | |
1294 | tail = (unsigned int) readw(&ap->txq.tail); | |
1295 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1296 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1297 | size = portp->txsize; |
1298 | if (head >= tail) { | |
1299 | len = size - (head - tail) - 1; | |
1300 | stlen = size - head; | |
1301 | } else { | |
1302 | len = tail - head - 1; | |
1303 | stlen = len; | |
1304 | } | |
1305 | ||
a3f8d9d5 | 1306 | len = min(len, cooksize); |
1da177e4 | 1307 | count = 0; |
29756fa3 | 1308 | shbuf = EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1309 | buf = stli_txcookbuf; |
1310 | ||
1311 | while (len > 0) { | |
a3f8d9d5 | 1312 | stlen = min(len, stlen); |
4ac4360b | 1313 | memcpy_toio(shbuf + head, buf, stlen); |
1da177e4 LT |
1314 | buf += stlen; |
1315 | len -= stlen; | |
1316 | count += stlen; | |
1317 | head += stlen; | |
1318 | if (head >= size) { | |
1319 | head = 0; | |
1320 | stlen = tail; | |
1321 | } | |
1322 | } | |
1323 | ||
4ac4360b AC |
1324 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1325 | writew(head, &ap->txq.head); | |
1da177e4 LT |
1326 | |
1327 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
4ac4360b AC |
1328 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1329 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1330 | } |
4ac4360b AC |
1331 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1332 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1333 | portp->portidx; |
4ac4360b | 1334 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1335 | set_bit(ST_TXBUSY, &portp->state); |
1336 | ||
1337 | EBRDDISABLE(brdp); | |
4ac4360b | 1338 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1339 | } |
1340 | ||
1341 | /*****************************************************************************/ | |
1342 | ||
1343 | static int stli_writeroom(struct tty_struct *tty) | |
1344 | { | |
4ac4360b | 1345 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1346 | struct stliport *portp; |
1347 | struct stlibrd *brdp; | |
4ac4360b AC |
1348 | unsigned int head, tail, len; |
1349 | unsigned long flags; | |
1da177e4 | 1350 | |
1da177e4 LT |
1351 | if (tty == stli_txcooktty) { |
1352 | if (stli_txcookrealsize != 0) { | |
1353 | len = stli_txcookrealsize - stli_txcooksize; | |
4ac4360b | 1354 | return len; |
1da177e4 LT |
1355 | } |
1356 | } | |
1357 | ||
1358 | portp = tty->driver_data; | |
4ac4360b AC |
1359 | if (portp == NULL) |
1360 | return 0; | |
1328d737 | 1361 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1362 | return 0; |
1da177e4 | 1363 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1364 | if (brdp == NULL) |
1365 | return 0; | |
1da177e4 | 1366 | |
4ac4360b | 1367 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1368 | EBRDENABLE(brdp); |
4ac4360b AC |
1369 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1370 | head = (unsigned int) readw(&rp->head); | |
1371 | tail = (unsigned int) readw(&rp->tail); | |
1372 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1373 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1374 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); |
1375 | len--; | |
1376 | EBRDDISABLE(brdp); | |
4ac4360b | 1377 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1378 | |
1379 | if (tty == stli_txcooktty) { | |
1380 | stli_txcookrealsize = len; | |
1381 | len -= stli_txcooksize; | |
1382 | } | |
4ac4360b | 1383 | return len; |
1da177e4 LT |
1384 | } |
1385 | ||
1386 | /*****************************************************************************/ | |
1387 | ||
1388 | /* | |
1389 | * Return the number of characters in the transmit buffer. Normally we | |
1390 | * will return the number of chars in the shared memory ring queue. | |
1391 | * We need to kludge around the case where the shared memory buffer is | |
1392 | * empty but not all characters have drained yet, for this case just | |
1393 | * return that there is 1 character in the buffer! | |
1394 | */ | |
1395 | ||
1396 | static int stli_charsinbuffer(struct tty_struct *tty) | |
1397 | { | |
4ac4360b | 1398 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1399 | struct stliport *portp; |
1400 | struct stlibrd *brdp; | |
4ac4360b AC |
1401 | unsigned int head, tail, len; |
1402 | unsigned long flags; | |
1da177e4 | 1403 | |
1da177e4 LT |
1404 | if (tty == stli_txcooktty) |
1405 | stli_flushchars(tty); | |
1406 | portp = tty->driver_data; | |
4ac4360b AC |
1407 | if (portp == NULL) |
1408 | return 0; | |
1328d737 | 1409 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1410 | return 0; |
1da177e4 | 1411 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1412 | if (brdp == NULL) |
1413 | return 0; | |
1da177e4 | 1414 | |
4ac4360b | 1415 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1416 | EBRDENABLE(brdp); |
4ac4360b AC |
1417 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1418 | head = (unsigned int) readw(&rp->head); | |
1419 | tail = (unsigned int) readw(&rp->tail); | |
1420 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1421 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1422 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); |
1423 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) | |
1424 | len = 1; | |
1425 | EBRDDISABLE(brdp); | |
4ac4360b | 1426 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 | 1427 | |
4ac4360b | 1428 | return len; |
1da177e4 LT |
1429 | } |
1430 | ||
1431 | /*****************************************************************************/ | |
1432 | ||
1433 | /* | |
1434 | * Generate the serial struct info. | |
1435 | */ | |
1436 | ||
1f8ec435 | 1437 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp) |
1da177e4 | 1438 | { |
4ac4360b | 1439 | struct serial_struct sio; |
1f8ec435 | 1440 | struct stlibrd *brdp; |
1da177e4 LT |
1441 | |
1442 | memset(&sio, 0, sizeof(struct serial_struct)); | |
1443 | sio.type = PORT_UNKNOWN; | |
1444 | sio.line = portp->portnr; | |
1445 | sio.irq = 0; | |
b02f5ad6 | 1446 | sio.flags = portp->port.flags; |
1da177e4 | 1447 | sio.baud_base = portp->baud_base; |
a6614999 | 1448 | sio.close_delay = portp->port.close_delay; |
1da177e4 LT |
1449 | sio.closing_wait = portp->closing_wait; |
1450 | sio.custom_divisor = portp->custom_divisor; | |
1451 | sio.xmit_fifo_size = 0; | |
1452 | sio.hub6 = 0; | |
1453 | ||
1454 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1455 | if (brdp != NULL) |
1da177e4 LT |
1456 | sio.port = brdp->iobase; |
1457 | ||
1458 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? | |
1459 | -EFAULT : 0; | |
1460 | } | |
1461 | ||
1462 | /*****************************************************************************/ | |
1463 | ||
1464 | /* | |
1465 | * Set port according to the serial struct info. | |
1466 | * At this point we do not do any auto-configure stuff, so we will | |
1467 | * just quietly ignore any requests to change irq, etc. | |
1468 | */ | |
1469 | ||
d18a750f | 1470 | static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp) |
1da177e4 | 1471 | { |
4ac4360b AC |
1472 | struct serial_struct sio; |
1473 | int rc; | |
d18a750f | 1474 | struct stliport *portp = tty->driver_data; |
1da177e4 LT |
1475 | |
1476 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) | |
1477 | return -EFAULT; | |
1478 | if (!capable(CAP_SYS_ADMIN)) { | |
1479 | if ((sio.baud_base != portp->baud_base) || | |
a6614999 | 1480 | (sio.close_delay != portp->port.close_delay) || |
1da177e4 | 1481 | ((sio.flags & ~ASYNC_USR_MASK) != |
b02f5ad6 | 1482 | (portp->port.flags & ~ASYNC_USR_MASK))) |
4ac4360b | 1483 | return -EPERM; |
1da177e4 LT |
1484 | } |
1485 | ||
b02f5ad6 | 1486 | portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) | |
1da177e4 LT |
1487 | (sio.flags & ASYNC_USR_MASK); |
1488 | portp->baud_base = sio.baud_base; | |
a6614999 | 1489 | portp->port.close_delay = sio.close_delay; |
1da177e4 LT |
1490 | portp->closing_wait = sio.closing_wait; |
1491 | portp->custom_divisor = sio.custom_divisor; | |
1492 | ||
d18a750f | 1493 | if ((rc = stli_setport(tty)) < 0) |
4ac4360b AC |
1494 | return rc; |
1495 | return 0; | |
1da177e4 LT |
1496 | } |
1497 | ||
1498 | /*****************************************************************************/ | |
1499 | ||
1500 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) | |
1501 | { | |
1f8ec435 JS |
1502 | struct stliport *portp = tty->driver_data; |
1503 | struct stlibrd *brdp; | |
1da177e4 LT |
1504 | int rc; |
1505 | ||
4ac4360b AC |
1506 | if (portp == NULL) |
1507 | return -ENODEV; | |
1328d737 | 1508 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1509 | return 0; |
1da177e4 | 1510 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1511 | if (brdp == NULL) |
1512 | return 0; | |
1da177e4 | 1513 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1514 | return -EIO; |
1da177e4 LT |
1515 | |
1516 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, | |
1517 | &portp->asig, sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1518 | return rc; |
1da177e4 LT |
1519 | |
1520 | return stli_mktiocm(portp->asig.sigvalue); | |
1521 | } | |
1522 | ||
1523 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, | |
1524 | unsigned int set, unsigned int clear) | |
1525 | { | |
1f8ec435 JS |
1526 | struct stliport *portp = tty->driver_data; |
1527 | struct stlibrd *brdp; | |
1da177e4 LT |
1528 | int rts = -1, dtr = -1; |
1529 | ||
4ac4360b AC |
1530 | if (portp == NULL) |
1531 | return -ENODEV; | |
1328d737 | 1532 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1533 | return 0; |
1da177e4 | 1534 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1535 | if (brdp == NULL) |
1536 | return 0; | |
1da177e4 | 1537 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1538 | return -EIO; |
1da177e4 LT |
1539 | |
1540 | if (set & TIOCM_RTS) | |
1541 | rts = 1; | |
1542 | if (set & TIOCM_DTR) | |
1543 | dtr = 1; | |
1544 | if (clear & TIOCM_RTS) | |
1545 | rts = 0; | |
1546 | if (clear & TIOCM_DTR) | |
1547 | dtr = 0; | |
1548 | ||
1549 | stli_mkasysigs(&portp->asig, dtr, rts); | |
1550 | ||
1551 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1552 | sizeof(asysigs_t), 0); | |
1553 | } | |
1554 | ||
1555 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1556 | { | |
1f8ec435 JS |
1557 | struct stliport *portp; |
1558 | struct stlibrd *brdp; | |
4ac4360b | 1559 | int rc; |
1da177e4 LT |
1560 | void __user *argp = (void __user *)arg; |
1561 | ||
1da177e4 | 1562 | portp = tty->driver_data; |
4ac4360b AC |
1563 | if (portp == NULL) |
1564 | return -ENODEV; | |
1328d737 | 1565 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1566 | return 0; |
1da177e4 | 1567 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1568 | if (brdp == NULL) |
1569 | return 0; | |
1da177e4 LT |
1570 | |
1571 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && | |
1572 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { | |
1573 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
4ac4360b | 1574 | return -EIO; |
1da177e4 LT |
1575 | } |
1576 | ||
1577 | rc = 0; | |
1578 | ||
1579 | switch (cmd) { | |
1da177e4 LT |
1580 | case TIOCGSERIAL: |
1581 | rc = stli_getserial(portp, argp); | |
1582 | break; | |
1583 | case TIOCSSERIAL: | |
d18a750f | 1584 | rc = stli_setserial(tty, argp); |
1da177e4 LT |
1585 | break; |
1586 | case STL_GETPFLAG: | |
1587 | rc = put_user(portp->pflag, (unsigned __user *)argp); | |
1588 | break; | |
1589 | case STL_SETPFLAG: | |
1590 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) | |
d18a750f | 1591 | stli_setport(tty); |
1da177e4 LT |
1592 | break; |
1593 | case COM_GETPORTSTATS: | |
d18a750f | 1594 | rc = stli_getportstats(tty, portp, argp); |
1da177e4 LT |
1595 | break; |
1596 | case COM_CLRPORTSTATS: | |
1597 | rc = stli_clrportstats(portp, argp); | |
1598 | break; | |
1599 | case TIOCSERCONFIG: | |
1600 | case TIOCSERGWILD: | |
1601 | case TIOCSERSWILD: | |
1602 | case TIOCSERGETLSR: | |
1603 | case TIOCSERGSTRUCT: | |
1604 | case TIOCSERGETMULTI: | |
1605 | case TIOCSERSETMULTI: | |
1606 | default: | |
1607 | rc = -ENOIOCTLCMD; | |
1608 | break; | |
1609 | } | |
1610 | ||
4ac4360b | 1611 | return rc; |
1da177e4 LT |
1612 | } |
1613 | ||
1614 | /*****************************************************************************/ | |
1615 | ||
1616 | /* | |
1617 | * This routine assumes that we have user context and can sleep. | |
1618 | * Looks like it is true for the current ttys implementation..!! | |
1619 | */ | |
1620 | ||
606d099c | 1621 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old) |
1da177e4 | 1622 | { |
1f8ec435 JS |
1623 | struct stliport *portp; |
1624 | struct stlibrd *brdp; | |
606d099c | 1625 | struct ktermios *tiosp; |
4ac4360b | 1626 | asyport_t aport; |
1da177e4 | 1627 | |
1da177e4 | 1628 | portp = tty->driver_data; |
4ac4360b | 1629 | if (portp == NULL) |
1da177e4 | 1630 | return; |
1328d737 | 1631 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1632 | return; |
1633 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1634 | if (brdp == NULL) |
1da177e4 LT |
1635 | return; |
1636 | ||
1637 | tiosp = tty->termios; | |
1da177e4 | 1638 | |
d18a750f | 1639 | stli_mkasyport(tty, portp, &aport, tiosp); |
1da177e4 LT |
1640 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); |
1641 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); | |
1642 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1643 | sizeof(asysigs_t), 0); | |
1644 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) | |
1645 | tty->hw_stopped = 0; | |
1646 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) | |
b02f5ad6 | 1647 | wake_up_interruptible(&portp->port.open_wait); |
1da177e4 LT |
1648 | } |
1649 | ||
1650 | /*****************************************************************************/ | |
1651 | ||
1652 | /* | |
1653 | * Attempt to flow control who ever is sending us data. We won't really | |
1654 | * do any flow control action here. We can't directly, and even if we | |
1655 | * wanted to we would have to send a command to the slave. The slave | |
1656 | * knows how to flow control, and will do so when its buffers reach its | |
1657 | * internal high water marks. So what we will do is set a local state | |
1658 | * bit that will stop us sending any RX data up from the poll routine | |
1659 | * (which is the place where RX data from the slave is handled). | |
1660 | */ | |
1661 | ||
1662 | static void stli_throttle(struct tty_struct *tty) | |
1663 | { | |
1f8ec435 | 1664 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1665 | if (portp == NULL) |
1da177e4 | 1666 | return; |
1da177e4 LT |
1667 | set_bit(ST_RXSTOP, &portp->state); |
1668 | } | |
1669 | ||
1670 | /*****************************************************************************/ | |
1671 | ||
1672 | /* | |
1673 | * Unflow control the device sending us data... That means that all | |
1674 | * we have to do is clear the RXSTOP state bit. The next poll call | |
1675 | * will then be able to pass the RX data back up. | |
1676 | */ | |
1677 | ||
1678 | static void stli_unthrottle(struct tty_struct *tty) | |
1679 | { | |
1f8ec435 | 1680 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1681 | if (portp == NULL) |
1da177e4 | 1682 | return; |
1da177e4 LT |
1683 | clear_bit(ST_RXSTOP, &portp->state); |
1684 | } | |
1685 | ||
1686 | /*****************************************************************************/ | |
1687 | ||
1688 | /* | |
4ac4360b | 1689 | * Stop the transmitter. |
1da177e4 LT |
1690 | */ |
1691 | ||
1692 | static void stli_stop(struct tty_struct *tty) | |
1693 | { | |
1da177e4 LT |
1694 | } |
1695 | ||
1696 | /*****************************************************************************/ | |
1697 | ||
1698 | /* | |
4ac4360b | 1699 | * Start the transmitter again. |
1da177e4 LT |
1700 | */ |
1701 | ||
1702 | static void stli_start(struct tty_struct *tty) | |
1703 | { | |
1da177e4 LT |
1704 | } |
1705 | ||
1706 | /*****************************************************************************/ | |
1707 | ||
338818fd | 1708 | |
1da177e4 LT |
1709 | /* |
1710 | * Hangup this port. This is pretty much like closing the port, only | |
1711 | * a little more brutal. No waiting for data to drain. Shutdown the | |
1712 | * port and maybe drop signals. This is rather tricky really. We want | |
1713 | * to close the port as well. | |
1714 | */ | |
1715 | ||
1716 | static void stli_hangup(struct tty_struct *tty) | |
1717 | { | |
338818fd AC |
1718 | struct stliport *portp = tty->driver_data; |
1719 | tty_port_hangup(&portp->port); | |
1da177e4 LT |
1720 | } |
1721 | ||
1722 | /*****************************************************************************/ | |
1723 | ||
1724 | /* | |
1725 | * Flush characters from the lower buffer. We may not have user context | |
1726 | * so we cannot sleep waiting for it to complete. Also we need to check | |
1727 | * if there is chars for this port in the TX cook buffer, and flush them | |
1728 | * as well. | |
1729 | */ | |
1730 | ||
1731 | static void stli_flushbuffer(struct tty_struct *tty) | |
1732 | { | |
1f8ec435 JS |
1733 | struct stliport *portp; |
1734 | struct stlibrd *brdp; | |
4ac4360b | 1735 | unsigned long ftype, flags; |
1da177e4 | 1736 | |
1da177e4 | 1737 | portp = tty->driver_data; |
4ac4360b | 1738 | if (portp == NULL) |
1da177e4 | 1739 | return; |
1328d737 | 1740 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1741 | return; |
1742 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1743 | if (brdp == NULL) |
1da177e4 LT |
1744 | return; |
1745 | ||
4ac4360b | 1746 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1747 | if (tty == stli_txcooktty) { |
4ac4360b | 1748 | stli_txcooktty = NULL; |
1da177e4 LT |
1749 | stli_txcooksize = 0; |
1750 | stli_txcookrealsize = 0; | |
1751 | } | |
1752 | if (test_bit(ST_CMDING, &portp->state)) { | |
1753 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1754 | } else { | |
1755 | ftype = FLUSHTX; | |
1756 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { | |
1757 | ftype |= FLUSHRX; | |
1758 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
1759 | } | |
4ac4360b | 1760 | __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); |
1da177e4 | 1761 | } |
4ac4360b AC |
1762 | spin_unlock_irqrestore(&brd_lock, flags); |
1763 | tty_wakeup(tty); | |
1da177e4 LT |
1764 | } |
1765 | ||
1766 | /*****************************************************************************/ | |
1767 | ||
9e98966c | 1768 | static int stli_breakctl(struct tty_struct *tty, int state) |
1da177e4 | 1769 | { |
1f8ec435 JS |
1770 | struct stlibrd *brdp; |
1771 | struct stliport *portp; | |
1da177e4 | 1772 | long arg; |
1da177e4 | 1773 | |
1da177e4 | 1774 | portp = tty->driver_data; |
4ac4360b | 1775 | if (portp == NULL) |
9e98966c | 1776 | return -EINVAL; |
1328d737 | 1777 | if (portp->brdnr >= stli_nrbrds) |
9e98966c | 1778 | return -EINVAL; |
1da177e4 | 1779 | brdp = stli_brds[portp->brdnr]; |
4ac4360b | 1780 | if (brdp == NULL) |
9e98966c | 1781 | return -EINVAL; |
1da177e4 | 1782 | |
1da177e4 LT |
1783 | arg = (state == -1) ? BREAKON : BREAKOFF; |
1784 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); | |
9e98966c | 1785 | return 0; |
1da177e4 LT |
1786 | } |
1787 | ||
1788 | /*****************************************************************************/ | |
1789 | ||
1790 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) | |
1791 | { | |
1f8ec435 | 1792 | struct stliport *portp; |
4ac4360b | 1793 | unsigned long tend; |
1da177e4 | 1794 | |
1da177e4 | 1795 | portp = tty->driver_data; |
4ac4360b | 1796 | if (portp == NULL) |
1da177e4 LT |
1797 | return; |
1798 | ||
1799 | if (timeout == 0) | |
1800 | timeout = HZ; | |
1801 | tend = jiffies + timeout; | |
1802 | ||
1803 | while (test_bit(ST_TXBUSY, &portp->state)) { | |
1804 | if (signal_pending(current)) | |
1805 | break; | |
1806 | msleep_interruptible(20); | |
1807 | if (time_after_eq(jiffies, tend)) | |
1808 | break; | |
1809 | } | |
1810 | } | |
1811 | ||
1812 | /*****************************************************************************/ | |
1813 | ||
1814 | static void stli_sendxchar(struct tty_struct *tty, char ch) | |
1815 | { | |
1f8ec435 JS |
1816 | struct stlibrd *brdp; |
1817 | struct stliport *portp; | |
1da177e4 LT |
1818 | asyctrl_t actrl; |
1819 | ||
1da177e4 | 1820 | portp = tty->driver_data; |
4ac4360b | 1821 | if (portp == NULL) |
1da177e4 | 1822 | return; |
1328d737 | 1823 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1824 | return; |
1825 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1826 | if (brdp == NULL) |
1da177e4 LT |
1827 | return; |
1828 | ||
1829 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
1830 | if (ch == STOP_CHAR(tty)) { | |
1831 | actrl.rxctrl = CT_STOPFLOW; | |
1832 | } else if (ch == START_CHAR(tty)) { | |
1833 | actrl.rxctrl = CT_STARTFLOW; | |
1834 | } else { | |
1835 | actrl.txctrl = CT_SENDCHR; | |
1836 | actrl.tximdch = ch; | |
1837 | } | |
1da177e4 LT |
1838 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
1839 | } | |
1840 | ||
5bd6de7d | 1841 | static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr) |
1da177e4 | 1842 | { |
5bd6de7d AD |
1843 | char *uart; |
1844 | int rc; | |
1da177e4 | 1845 | |
d18a750f | 1846 | rc = stli_portcmdstats(NULL, portp); |
1da177e4 LT |
1847 | |
1848 | uart = "UNKNOWN"; | |
1849 | if (brdp->state & BST_STARTED) { | |
1850 | switch (stli_comstats.hwid) { | |
4ac4360b AC |
1851 | case 0: uart = "2681"; break; |
1852 | case 1: uart = "SC26198"; break; | |
1853 | default:uart = "CD1400"; break; | |
1da177e4 LT |
1854 | } |
1855 | } | |
5bd6de7d | 1856 | seq_printf(m, "%d: uart:%s ", portnr, uart); |
1da177e4 LT |
1857 | |
1858 | if ((brdp->state & BST_STARTED) && (rc >= 0)) { | |
5bd6de7d AD |
1859 | char sep; |
1860 | ||
1861 | seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal, | |
1da177e4 LT |
1862 | (int) stli_comstats.rxtotal); |
1863 | ||
1864 | if (stli_comstats.rxframing) | |
5bd6de7d | 1865 | seq_printf(m, " fe:%d", |
1da177e4 LT |
1866 | (int) stli_comstats.rxframing); |
1867 | if (stli_comstats.rxparity) | |
5bd6de7d | 1868 | seq_printf(m, " pe:%d", |
1da177e4 LT |
1869 | (int) stli_comstats.rxparity); |
1870 | if (stli_comstats.rxbreaks) | |
5bd6de7d | 1871 | seq_printf(m, " brk:%d", |
1da177e4 LT |
1872 | (int) stli_comstats.rxbreaks); |
1873 | if (stli_comstats.rxoverrun) | |
5bd6de7d | 1874 | seq_printf(m, " oe:%d", |
1da177e4 LT |
1875 | (int) stli_comstats.rxoverrun); |
1876 | ||
5bd6de7d AD |
1877 | sep = ' '; |
1878 | if (stli_comstats.signals & TIOCM_RTS) { | |
1879 | seq_printf(m, "%c%s", sep, "RTS"); | |
1880 | sep = '|'; | |
1881 | } | |
1882 | if (stli_comstats.signals & TIOCM_CTS) { | |
1883 | seq_printf(m, "%c%s", sep, "CTS"); | |
1884 | sep = '|'; | |
1885 | } | |
1886 | if (stli_comstats.signals & TIOCM_DTR) { | |
1887 | seq_printf(m, "%c%s", sep, "DTR"); | |
1888 | sep = '|'; | |
1889 | } | |
1890 | if (stli_comstats.signals & TIOCM_CD) { | |
1891 | seq_printf(m, "%c%s", sep, "DCD"); | |
1892 | sep = '|'; | |
1893 | } | |
1894 | if (stli_comstats.signals & TIOCM_DSR) { | |
1895 | seq_printf(m, "%c%s", sep, "DSR"); | |
1896 | sep = '|'; | |
1897 | } | |
1da177e4 | 1898 | } |
5bd6de7d | 1899 | seq_putc(m, '\n'); |
1da177e4 LT |
1900 | } |
1901 | ||
1902 | /*****************************************************************************/ | |
1903 | ||
1904 | /* | |
1905 | * Port info, read from the /proc file system. | |
1906 | */ | |
1907 | ||
5bd6de7d | 1908 | static int stli_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1909 | { |
1f8ec435 JS |
1910 | struct stlibrd *brdp; |
1911 | struct stliport *portp; | |
1328d737 | 1912 | unsigned int brdnr, portnr, totalport; |
1da177e4 | 1913 | |
1da177e4 | 1914 | totalport = 0; |
5bd6de7d AD |
1915 | |
1916 | seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion); | |
1da177e4 LT |
1917 | |
1918 | /* | |
1919 | * We scan through for each board, panel and port. The offset is | |
1920 | * calculated on the fly, and irrelevant ports are skipped. | |
1921 | */ | |
1922 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
1923 | brdp = stli_brds[brdnr]; | |
4ac4360b | 1924 | if (brdp == NULL) |
1da177e4 LT |
1925 | continue; |
1926 | if (brdp->state == 0) | |
1927 | continue; | |
1928 | ||
1da177e4 LT |
1929 | totalport = brdnr * STL_MAXPORTS; |
1930 | for (portnr = 0; (portnr < brdp->nrports); portnr++, | |
1931 | totalport++) { | |
1932 | portp = brdp->ports[portnr]; | |
4ac4360b | 1933 | if (portp == NULL) |
1da177e4 | 1934 | continue; |
5bd6de7d | 1935 | stli_portinfo(m, brdp, portp, totalport); |
1da177e4 LT |
1936 | } |
1937 | } | |
5bd6de7d AD |
1938 | return 0; |
1939 | } | |
1da177e4 | 1940 | |
5bd6de7d AD |
1941 | static int stli_proc_open(struct inode *inode, struct file *file) |
1942 | { | |
1943 | return single_open(file, stli_proc_show, NULL); | |
1da177e4 LT |
1944 | } |
1945 | ||
5bd6de7d AD |
1946 | static const struct file_operations stli_proc_fops = { |
1947 | .owner = THIS_MODULE, | |
1948 | .open = stli_proc_open, | |
1949 | .read = seq_read, | |
1950 | .llseek = seq_lseek, | |
1951 | .release = single_release, | |
1952 | }; | |
1953 | ||
1da177e4 LT |
1954 | /*****************************************************************************/ |
1955 | ||
1956 | /* | |
1957 | * Generic send command routine. This will send a message to the slave, | |
1958 | * of the specified type with the specified argument. Must be very | |
1959 | * careful of data that will be copied out from shared memory - | |
1960 | * containing command results. The command completion is all done from | |
1961 | * a poll routine that does not have user context. Therefore you cannot | |
1962 | * copy back directly into user space, or to the kernel stack of a | |
1963 | * process. This routine does not sleep, so can be called from anywhere. | |
4ac4360b AC |
1964 | * |
1965 | * The caller must hold the brd_lock (see also stli_sendcmd the usual | |
1966 | * entry point) | |
1da177e4 LT |
1967 | */ |
1968 | ||
1f8ec435 | 1969 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 1970 | { |
4ac4360b AC |
1971 | cdkhdr_t __iomem *hdrp; |
1972 | cdkctrl_t __iomem *cp; | |
1973 | unsigned char __iomem *bits; | |
1da177e4 LT |
1974 | |
1975 | if (test_bit(ST_CMDING, &portp->state)) { | |
a6614999 | 1976 | printk(KERN_ERR "istallion: command already busy, cmd=%x!\n", |
1da177e4 | 1977 | (int) cmd); |
1da177e4 LT |
1978 | return; |
1979 | } | |
1980 | ||
1981 | EBRDENABLE(brdp); | |
4ac4360b | 1982 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1da177e4 | 1983 | if (size > 0) { |
4ac4360b | 1984 | memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); |
1da177e4 LT |
1985 | if (copyback) { |
1986 | portp->argp = arg; | |
1987 | portp->argsize = size; | |
1988 | } | |
1989 | } | |
4ac4360b AC |
1990 | writel(0, &cp->status); |
1991 | writel(cmd, &cp->cmd); | |
1992 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1993 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1994 | portp->portidx; |
4ac4360b | 1995 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1996 | set_bit(ST_CMDING, &portp->state); |
1997 | EBRDDISABLE(brdp); | |
4ac4360b AC |
1998 | } |
1999 | ||
1f8ec435 | 2000 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
4ac4360b AC |
2001 | { |
2002 | unsigned long flags; | |
2003 | ||
2004 | spin_lock_irqsave(&brd_lock, flags); | |
2005 | __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
2006 | spin_unlock_irqrestore(&brd_lock, flags); | |
1da177e4 LT |
2007 | } |
2008 | ||
2009 | /*****************************************************************************/ | |
2010 | ||
2011 | /* | |
2012 | * Read data from shared memory. This assumes that the shared memory | |
2013 | * is enabled and that interrupts are off. Basically we just empty out | |
2014 | * the shared memory buffer into the tty buffer. Must be careful to | |
2015 | * handle the case where we fill up the tty buffer, but still have | |
2016 | * more chars to unload. | |
2017 | */ | |
2018 | ||
1f8ec435 | 2019 | static void stli_read(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2020 | { |
4ac4360b AC |
2021 | cdkasyrq_t __iomem *rp; |
2022 | char __iomem *shbuf; | |
1da177e4 | 2023 | struct tty_struct *tty; |
4ac4360b AC |
2024 | unsigned int head, tail, size; |
2025 | unsigned int len, stlen; | |
1da177e4 LT |
2026 | |
2027 | if (test_bit(ST_RXSTOP, &portp->state)) | |
2028 | return; | |
d18a750f | 2029 | tty = tty_port_tty_get(&portp->port); |
4ac4360b | 2030 | if (tty == NULL) |
1da177e4 LT |
2031 | return; |
2032 | ||
4ac4360b AC |
2033 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2034 | head = (unsigned int) readw(&rp->head); | |
2035 | if (head != ((unsigned int) readw(&rp->head))) | |
2036 | head = (unsigned int) readw(&rp->head); | |
2037 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
2038 | size = portp->rxsize; |
2039 | if (head >= tail) { | |
2040 | len = head - tail; | |
2041 | stlen = len; | |
2042 | } else { | |
2043 | len = size - (tail - head); | |
2044 | stlen = size - tail; | |
2045 | } | |
2046 | ||
33f0f88f | 2047 | len = tty_buffer_request_room(tty, len); |
4ac4360b AC |
2048 | |
2049 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); | |
1da177e4 LT |
2050 | |
2051 | while (len > 0) { | |
4ac4360b AC |
2052 | unsigned char *cptr; |
2053 | ||
a3f8d9d5 | 2054 | stlen = min(len, stlen); |
4ac4360b AC |
2055 | tty_prepare_flip_string(tty, &cptr, stlen); |
2056 | memcpy_fromio(cptr, shbuf + tail, stlen); | |
1da177e4 LT |
2057 | len -= stlen; |
2058 | tail += stlen; | |
2059 | if (tail >= size) { | |
2060 | tail = 0; | |
2061 | stlen = head; | |
2062 | } | |
2063 | } | |
4ac4360b AC |
2064 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2065 | writew(tail, &rp->tail); | |
1da177e4 LT |
2066 | |
2067 | if (head != tail) | |
2068 | set_bit(ST_RXING, &portp->state); | |
2069 | ||
2070 | tty_schedule_flip(tty); | |
d18a750f | 2071 | tty_kref_put(tty); |
1da177e4 LT |
2072 | } |
2073 | ||
2074 | /*****************************************************************************/ | |
2075 | ||
2076 | /* | |
2077 | * Set up and carry out any delayed commands. There is only a small set | |
2078 | * of slave commands that can be done "off-level". So it is not too | |
2079 | * difficult to deal with them here. | |
2080 | */ | |
2081 | ||
1f8ec435 | 2082 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp) |
1da177e4 | 2083 | { |
4ac4360b | 2084 | int cmd; |
1da177e4 LT |
2085 | |
2086 | if (test_bit(ST_DOSIGS, &portp->state)) { | |
2087 | if (test_bit(ST_DOFLUSHTX, &portp->state) && | |
2088 | test_bit(ST_DOFLUSHRX, &portp->state)) | |
2089 | cmd = A_SETSIGNALSF; | |
2090 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) | |
2091 | cmd = A_SETSIGNALSFTX; | |
2092 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) | |
2093 | cmd = A_SETSIGNALSFRX; | |
2094 | else | |
2095 | cmd = A_SETSIGNALS; | |
2096 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2097 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2098 | clear_bit(ST_DOSIGS, &portp->state); | |
4ac4360b | 2099 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, |
1da177e4 | 2100 | sizeof(asysigs_t)); |
4ac4360b AC |
2101 | writel(0, &cp->status); |
2102 | writel(cmd, &cp->cmd); | |
1da177e4 LT |
2103 | set_bit(ST_CMDING, &portp->state); |
2104 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || | |
2105 | test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2106 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); | |
2107 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); | |
2108 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2109 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
4ac4360b AC |
2110 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); |
2111 | writel(0, &cp->status); | |
2112 | writel(A_FLUSH, &cp->cmd); | |
1da177e4 LT |
2113 | set_bit(ST_CMDING, &portp->state); |
2114 | } | |
2115 | } | |
2116 | ||
2117 | /*****************************************************************************/ | |
2118 | ||
2119 | /* | |
2120 | * Host command service checking. This handles commands or messages | |
2121 | * coming from the slave to the host. Must have board shared memory | |
2122 | * enabled and interrupts off when called. Notice that by servicing the | |
2123 | * read data last we don't need to change the shared memory pointer | |
2124 | * during processing (which is a slow IO operation). | |
2125 | * Return value indicates if this port is still awaiting actions from | |
2126 | * the slave (like open, command, or even TX data being sent). If 0 | |
2127 | * then port is still busy, otherwise no longer busy. | |
2128 | */ | |
2129 | ||
1f8ec435 | 2130 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2131 | { |
4ac4360b AC |
2132 | cdkasy_t __iomem *ap; |
2133 | cdkctrl_t __iomem *cp; | |
2134 | struct tty_struct *tty; | |
2135 | asynotify_t nt; | |
2136 | unsigned long oldsigs; | |
2137 | int rc, donerx; | |
2138 | ||
2139 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); | |
1da177e4 LT |
2140 | cp = &ap->ctrl; |
2141 | ||
2142 | /* | |
2143 | * Check if we are waiting for an open completion message. | |
2144 | */ | |
2145 | if (test_bit(ST_OPENING, &portp->state)) { | |
4ac4360b AC |
2146 | rc = readl(&cp->openarg); |
2147 | if (readb(&cp->open) == 0 && rc != 0) { | |
1da177e4 LT |
2148 | if (rc > 0) |
2149 | rc--; | |
4ac4360b | 2150 | writel(0, &cp->openarg); |
1da177e4 LT |
2151 | portp->rc = rc; |
2152 | clear_bit(ST_OPENING, &portp->state); | |
2153 | wake_up_interruptible(&portp->raw_wait); | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | /* | |
2158 | * Check if we are waiting for a close completion message. | |
2159 | */ | |
2160 | if (test_bit(ST_CLOSING, &portp->state)) { | |
4ac4360b AC |
2161 | rc = (int) readl(&cp->closearg); |
2162 | if (readb(&cp->close) == 0 && rc != 0) { | |
1da177e4 LT |
2163 | if (rc > 0) |
2164 | rc--; | |
4ac4360b | 2165 | writel(0, &cp->closearg); |
1da177e4 LT |
2166 | portp->rc = rc; |
2167 | clear_bit(ST_CLOSING, &portp->state); | |
2168 | wake_up_interruptible(&portp->raw_wait); | |
2169 | } | |
2170 | } | |
2171 | ||
2172 | /* | |
2173 | * Check if we are waiting for a command completion message. We may | |
2174 | * need to copy out the command results associated with this command. | |
2175 | */ | |
2176 | if (test_bit(ST_CMDING, &portp->state)) { | |
4ac4360b AC |
2177 | rc = readl(&cp->status); |
2178 | if (readl(&cp->cmd) == 0 && rc != 0) { | |
1da177e4 LT |
2179 | if (rc > 0) |
2180 | rc--; | |
4ac4360b AC |
2181 | if (portp->argp != NULL) { |
2182 | memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), | |
1da177e4 | 2183 | portp->argsize); |
4ac4360b | 2184 | portp->argp = NULL; |
1da177e4 | 2185 | } |
4ac4360b | 2186 | writel(0, &cp->status); |
1da177e4 LT |
2187 | portp->rc = rc; |
2188 | clear_bit(ST_CMDING, &portp->state); | |
2189 | stli_dodelaycmd(portp, cp); | |
2190 | wake_up_interruptible(&portp->raw_wait); | |
2191 | } | |
2192 | } | |
2193 | ||
2194 | /* | |
2195 | * Check for any notification messages ready. This includes lots of | |
2196 | * different types of events - RX chars ready, RX break received, | |
2197 | * TX data low or empty in the slave, modem signals changed state. | |
2198 | */ | |
2199 | donerx = 0; | |
2200 | ||
2201 | if (ap->notify) { | |
2202 | nt = ap->changed; | |
2203 | ap->notify = 0; | |
d18a750f | 2204 | tty = tty_port_tty_get(&portp->port); |
1da177e4 LT |
2205 | |
2206 | if (nt.signal & SG_DCD) { | |
2207 | oldsigs = portp->sigs; | |
2208 | portp->sigs = stli_mktiocm(nt.sigvalue); | |
2209 | clear_bit(ST_GETSIGS, &portp->state); | |
2210 | if ((portp->sigs & TIOCM_CD) && | |
2211 | ((oldsigs & TIOCM_CD) == 0)) | |
b02f5ad6 | 2212 | wake_up_interruptible(&portp->port.open_wait); |
1da177e4 LT |
2213 | if ((oldsigs & TIOCM_CD) && |
2214 | ((portp->sigs & TIOCM_CD) == 0)) { | |
b02f5ad6 | 2215 | if (portp->port.flags & ASYNC_CHECK_CD) { |
1da177e4 | 2216 | if (tty) |
cfccaeea | 2217 | tty_hangup(tty); |
1da177e4 LT |
2218 | } |
2219 | } | |
2220 | } | |
2221 | ||
2222 | if (nt.data & DT_TXEMPTY) | |
2223 | clear_bit(ST_TXBUSY, &portp->state); | |
2224 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { | |
4ac4360b AC |
2225 | if (tty != NULL) { |
2226 | tty_wakeup(tty); | |
2227 | EBRDENABLE(brdp); | |
1da177e4 LT |
2228 | } |
2229 | } | |
2230 | ||
2231 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { | |
4ac4360b | 2232 | if (tty != NULL) { |
33f0f88f | 2233 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
b02f5ad6 | 2234 | if (portp->port.flags & ASYNC_SAK) { |
33f0f88f AC |
2235 | do_SAK(tty); |
2236 | EBRDENABLE(brdp); | |
1da177e4 | 2237 | } |
33f0f88f | 2238 | tty_schedule_flip(tty); |
1da177e4 LT |
2239 | } |
2240 | } | |
d18a750f | 2241 | tty_kref_put(tty); |
1da177e4 LT |
2242 | |
2243 | if (nt.data & DT_RXBUSY) { | |
2244 | donerx++; | |
2245 | stli_read(brdp, portp); | |
2246 | } | |
2247 | } | |
2248 | ||
2249 | /* | |
2250 | * It might seem odd that we are checking for more RX chars here. | |
2251 | * But, we need to handle the case where the tty buffer was previously | |
2252 | * filled, but we had more characters to pass up. The slave will not | |
2253 | * send any more RX notify messages until the RX buffer has been emptied. | |
2254 | * But it will leave the service bits on (since the buffer is not empty). | |
2255 | * So from here we can try to process more RX chars. | |
2256 | */ | |
2257 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { | |
2258 | clear_bit(ST_RXING, &portp->state); | |
2259 | stli_read(brdp, portp); | |
2260 | } | |
2261 | ||
2262 | return((test_bit(ST_OPENING, &portp->state) || | |
2263 | test_bit(ST_CLOSING, &portp->state) || | |
2264 | test_bit(ST_CMDING, &portp->state) || | |
2265 | test_bit(ST_TXBUSY, &portp->state) || | |
2266 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); | |
2267 | } | |
2268 | ||
2269 | /*****************************************************************************/ | |
2270 | ||
2271 | /* | |
2272 | * Service all ports on a particular board. Assumes that the boards | |
2273 | * shared memory is enabled, and that the page pointer is pointed | |
2274 | * at the cdk header structure. | |
2275 | */ | |
2276 | ||
1f8ec435 | 2277 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp) |
1da177e4 | 2278 | { |
1f8ec435 | 2279 | struct stliport *portp; |
4ac4360b AC |
2280 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; |
2281 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; | |
2282 | unsigned char __iomem *slavep; | |
2283 | int bitpos, bitat, bitsize; | |
2284 | int channr, nrdevs, slavebitchange; | |
1da177e4 LT |
2285 | |
2286 | bitsize = brdp->bitsize; | |
2287 | nrdevs = brdp->nrdevs; | |
2288 | ||
2289 | /* | |
2290 | * Check if slave wants any service. Basically we try to do as | |
2291 | * little work as possible here. There are 2 levels of service | |
2292 | * bits. So if there is nothing to do we bail early. We check | |
2293 | * 8 service bits at a time in the inner loop, so we can bypass | |
2294 | * the lot if none of them want service. | |
2295 | */ | |
4ac4360b | 2296 | memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), |
1da177e4 LT |
2297 | bitsize); |
2298 | ||
2299 | memset(&slavebits[0], 0, bitsize); | |
2300 | slavebitchange = 0; | |
2301 | ||
2302 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
2303 | if (hostbits[bitpos] == 0) | |
2304 | continue; | |
2305 | channr = bitpos * 8; | |
2306 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { | |
2307 | if (hostbits[bitpos] & bitat) { | |
2308 | portp = brdp->ports[(channr - 1)]; | |
2309 | if (stli_hostcmd(brdp, portp)) { | |
2310 | slavebitchange++; | |
2311 | slavebits[bitpos] |= bitat; | |
2312 | } | |
2313 | } | |
2314 | } | |
2315 | } | |
2316 | ||
2317 | /* | |
2318 | * If any of the ports are no longer busy then update them in the | |
2319 | * slave request bits. We need to do this after, since a host port | |
2320 | * service may initiate more slave requests. | |
2321 | */ | |
2322 | if (slavebitchange) { | |
4ac4360b AC |
2323 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2324 | slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; | |
1da177e4 | 2325 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
4ac4360b AC |
2326 | if (readb(slavebits + bitpos)) |
2327 | writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); | |
1da177e4 LT |
2328 | } |
2329 | } | |
2330 | } | |
2331 | ||
2332 | /*****************************************************************************/ | |
2333 | ||
2334 | /* | |
2335 | * Driver poll routine. This routine polls the boards in use and passes | |
2336 | * messages back up to host when necessary. This is actually very | |
2337 | * CPU efficient, since we will always have the kernel poll clock, it | |
2338 | * adds only a few cycles when idle (since board service can be | |
2339 | * determined very easily), but when loaded generates no interrupts | |
2340 | * (with their expensive associated context change). | |
2341 | */ | |
2342 | ||
2343 | static void stli_poll(unsigned long arg) | |
2344 | { | |
4ac4360b | 2345 | cdkhdr_t __iomem *hdrp; |
1f8ec435 | 2346 | struct stlibrd *brdp; |
1328d737 | 2347 | unsigned int brdnr; |
1da177e4 | 2348 | |
ff8efe97 | 2349 | mod_timer(&stli_timerlist, STLI_TIMEOUT); |
1da177e4 LT |
2350 | |
2351 | /* | |
2352 | * Check each board and do any servicing required. | |
2353 | */ | |
2354 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2355 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2356 | if (brdp == NULL) |
1da177e4 LT |
2357 | continue; |
2358 | if ((brdp->state & BST_STARTED) == 0) | |
2359 | continue; | |
2360 | ||
4ac4360b | 2361 | spin_lock(&brd_lock); |
1da177e4 | 2362 | EBRDENABLE(brdp); |
4ac4360b AC |
2363 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2364 | if (readb(&hdrp->hostreq)) | |
1da177e4 LT |
2365 | stli_brdpoll(brdp, hdrp); |
2366 | EBRDDISABLE(brdp); | |
4ac4360b | 2367 | spin_unlock(&brd_lock); |
1da177e4 LT |
2368 | } |
2369 | } | |
2370 | ||
2371 | /*****************************************************************************/ | |
2372 | ||
2373 | /* | |
2374 | * Translate the termios settings into the port setting structure of | |
2375 | * the slave. | |
2376 | */ | |
2377 | ||
d18a750f AC |
2378 | static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, |
2379 | asyport_t *pp, struct ktermios *tiosp) | |
1da177e4 | 2380 | { |
1da177e4 LT |
2381 | memset(pp, 0, sizeof(asyport_t)); |
2382 | ||
2383 | /* | |
2384 | * Start of by setting the baud, char size, parity and stop bit info. | |
2385 | */ | |
d18a750f | 2386 | pp->baudout = tty_get_baud_rate(tty); |
1da177e4 | 2387 | if ((tiosp->c_cflag & CBAUD) == B38400) { |
b02f5ad6 | 2388 | if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
1da177e4 | 2389 | pp->baudout = 57600; |
b02f5ad6 | 2390 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
1da177e4 | 2391 | pp->baudout = 115200; |
b02f5ad6 | 2392 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
1da177e4 | 2393 | pp->baudout = 230400; |
b02f5ad6 | 2394 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
1da177e4 | 2395 | pp->baudout = 460800; |
b02f5ad6 | 2396 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) |
1da177e4 LT |
2397 | pp->baudout = (portp->baud_base / portp->custom_divisor); |
2398 | } | |
2399 | if (pp->baudout > STL_MAXBAUD) | |
2400 | pp->baudout = STL_MAXBAUD; | |
2401 | pp->baudin = pp->baudout; | |
2402 | ||
2403 | switch (tiosp->c_cflag & CSIZE) { | |
2404 | case CS5: | |
2405 | pp->csize = 5; | |
2406 | break; | |
2407 | case CS6: | |
2408 | pp->csize = 6; | |
2409 | break; | |
2410 | case CS7: | |
2411 | pp->csize = 7; | |
2412 | break; | |
2413 | default: | |
2414 | pp->csize = 8; | |
2415 | break; | |
2416 | } | |
2417 | ||
2418 | if (tiosp->c_cflag & CSTOPB) | |
2419 | pp->stopbs = PT_STOP2; | |
2420 | else | |
2421 | pp->stopbs = PT_STOP1; | |
2422 | ||
2423 | if (tiosp->c_cflag & PARENB) { | |
2424 | if (tiosp->c_cflag & PARODD) | |
2425 | pp->parity = PT_ODDPARITY; | |
2426 | else | |
2427 | pp->parity = PT_EVENPARITY; | |
2428 | } else { | |
2429 | pp->parity = PT_NOPARITY; | |
2430 | } | |
2431 | ||
2432 | /* | |
2433 | * Set up any flow control options enabled. | |
2434 | */ | |
2435 | if (tiosp->c_iflag & IXON) { | |
2436 | pp->flow |= F_IXON; | |
2437 | if (tiosp->c_iflag & IXANY) | |
2438 | pp->flow |= F_IXANY; | |
2439 | } | |
2440 | if (tiosp->c_cflag & CRTSCTS) | |
2441 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); | |
2442 | ||
2443 | pp->startin = tiosp->c_cc[VSTART]; | |
2444 | pp->stopin = tiosp->c_cc[VSTOP]; | |
2445 | pp->startout = tiosp->c_cc[VSTART]; | |
2446 | pp->stopout = tiosp->c_cc[VSTOP]; | |
2447 | ||
2448 | /* | |
2449 | * Set up the RX char marking mask with those RX error types we must | |
2450 | * catch. We can get the slave to help us out a little here, it will | |
2451 | * ignore parity errors and breaks for us, and mark parity errors in | |
2452 | * the data stream. | |
2453 | */ | |
2454 | if (tiosp->c_iflag & IGNPAR) | |
2455 | pp->iflag |= FI_IGNRXERRS; | |
2456 | if (tiosp->c_iflag & IGNBRK) | |
2457 | pp->iflag |= FI_IGNBREAK; | |
2458 | ||
2459 | portp->rxmarkmsk = 0; | |
2460 | if (tiosp->c_iflag & (INPCK | PARMRK)) | |
2461 | pp->iflag |= FI_1MARKRXERRS; | |
2462 | if (tiosp->c_iflag & BRKINT) | |
2463 | portp->rxmarkmsk |= BRKINT; | |
2464 | ||
2465 | /* | |
2466 | * Set up clocal processing as required. | |
2467 | */ | |
2468 | if (tiosp->c_cflag & CLOCAL) | |
b02f5ad6 | 2469 | portp->port.flags &= ~ASYNC_CHECK_CD; |
1da177e4 | 2470 | else |
b02f5ad6 | 2471 | portp->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2472 | |
2473 | /* | |
2474 | * Transfer any persistent flags into the asyport structure. | |
2475 | */ | |
2476 | pp->pflag = (portp->pflag & 0xffff); | |
2477 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; | |
2478 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; | |
2479 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; | |
2480 | } | |
2481 | ||
2482 | /*****************************************************************************/ | |
2483 | ||
2484 | /* | |
2485 | * Construct a slave signals structure for setting the DTR and RTS | |
2486 | * signals as specified. | |
2487 | */ | |
2488 | ||
2489 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) | |
2490 | { | |
1da177e4 LT |
2491 | memset(sp, 0, sizeof(asysigs_t)); |
2492 | if (dtr >= 0) { | |
2493 | sp->signal |= SG_DTR; | |
2494 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); | |
2495 | } | |
2496 | if (rts >= 0) { | |
2497 | sp->signal |= SG_RTS; | |
2498 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); | |
2499 | } | |
2500 | } | |
2501 | ||
2502 | /*****************************************************************************/ | |
2503 | ||
2504 | /* | |
2505 | * Convert the signals returned from the slave into a local TIOCM type | |
2506 | * signals value. We keep them locally in TIOCM format. | |
2507 | */ | |
2508 | ||
2509 | static long stli_mktiocm(unsigned long sigvalue) | |
2510 | { | |
4ac4360b | 2511 | long tiocm = 0; |
1da177e4 LT |
2512 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); |
2513 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); | |
2514 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); | |
2515 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); | |
2516 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); | |
2517 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); | |
2518 | return(tiocm); | |
2519 | } | |
2520 | ||
2521 | /*****************************************************************************/ | |
2522 | ||
2523 | /* | |
2524 | * All panels and ports actually attached have been worked out. All | |
2525 | * we need to do here is set up the appropriate per port data structures. | |
2526 | */ | |
2527 | ||
1f8ec435 | 2528 | static int stli_initports(struct stlibrd *brdp) |
1da177e4 | 2529 | { |
1f8ec435 | 2530 | struct stliport *portp; |
1328d737 | 2531 | unsigned int i, panelnr, panelport; |
1da177e4 | 2532 | |
1da177e4 | 2533 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { |
1f8ec435 | 2534 | portp = kzalloc(sizeof(struct stliport), GFP_KERNEL); |
b0b4ed72 | 2535 | if (!portp) { |
a6614999 | 2536 | printk(KERN_WARNING "istallion: failed to allocate port structure\n"); |
1da177e4 LT |
2537 | continue; |
2538 | } | |
d18a750f | 2539 | tty_port_init(&portp->port); |
31f35939 | 2540 | portp->port.ops = &stli_port_ops; |
1da177e4 LT |
2541 | portp->magic = STLI_PORTMAGIC; |
2542 | portp->portnr = i; | |
2543 | portp->brdnr = brdp->brdnr; | |
2544 | portp->panelnr = panelnr; | |
2545 | portp->baud_base = STL_BAUDBASE; | |
a6614999 | 2546 | portp->port.close_delay = STL_CLOSEDELAY; |
1da177e4 | 2547 | portp->closing_wait = 30 * HZ; |
b02f5ad6 AC |
2548 | init_waitqueue_head(&portp->port.open_wait); |
2549 | init_waitqueue_head(&portp->port.close_wait); | |
1da177e4 LT |
2550 | init_waitqueue_head(&portp->raw_wait); |
2551 | panelport++; | |
2552 | if (panelport >= brdp->panels[panelnr]) { | |
2553 | panelport = 0; | |
2554 | panelnr++; | |
2555 | } | |
2556 | brdp->ports[i] = portp; | |
2557 | } | |
2558 | ||
4ac4360b | 2559 | return 0; |
1da177e4 LT |
2560 | } |
2561 | ||
2562 | /*****************************************************************************/ | |
2563 | ||
2564 | /* | |
2565 | * All the following routines are board specific hardware operations. | |
2566 | */ | |
2567 | ||
1f8ec435 | 2568 | static void stli_ecpinit(struct stlibrd *brdp) |
1da177e4 LT |
2569 | { |
2570 | unsigned long memconf; | |
2571 | ||
1da177e4 LT |
2572 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2573 | udelay(10); | |
2574 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2575 | udelay(100); | |
2576 | ||
2577 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; | |
2578 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); | |
2579 | } | |
2580 | ||
2581 | /*****************************************************************************/ | |
2582 | ||
1f8ec435 | 2583 | static void stli_ecpenable(struct stlibrd *brdp) |
1da177e4 | 2584 | { |
1da177e4 LT |
2585 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); |
2586 | } | |
2587 | ||
2588 | /*****************************************************************************/ | |
2589 | ||
1f8ec435 | 2590 | static void stli_ecpdisable(struct stlibrd *brdp) |
1da177e4 | 2591 | { |
1da177e4 LT |
2592 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
2593 | } | |
2594 | ||
2595 | /*****************************************************************************/ | |
2596 | ||
1f8ec435 | 2597 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2598 | { |
29756fa3 | 2599 | void __iomem *ptr; |
4ac4360b | 2600 | unsigned char val; |
1da177e4 LT |
2601 | |
2602 | if (offset > brdp->memsize) { | |
a6614999 | 2603 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2604 | "range at line=%d(%d), brd=%d\n", |
2605 | (int) offset, line, __LINE__, brdp->brdnr); | |
2606 | ptr = NULL; | |
2607 | val = 0; | |
2608 | } else { | |
2609 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); | |
2610 | val = (unsigned char) (offset / ECP_ATPAGESIZE); | |
2611 | } | |
2612 | outb(val, (brdp->iobase + ECP_ATMEMPR)); | |
2613 | return(ptr); | |
2614 | } | |
2615 | ||
2616 | /*****************************************************************************/ | |
2617 | ||
1f8ec435 | 2618 | static void stli_ecpreset(struct stlibrd *brdp) |
1da177e4 | 2619 | { |
1da177e4 LT |
2620 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2621 | udelay(10); | |
2622 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2623 | udelay(500); | |
2624 | } | |
2625 | ||
2626 | /*****************************************************************************/ | |
2627 | ||
1f8ec435 | 2628 | static void stli_ecpintr(struct stlibrd *brdp) |
1da177e4 | 2629 | { |
1da177e4 LT |
2630 | outb(0x1, brdp->iobase); |
2631 | } | |
2632 | ||
2633 | /*****************************************************************************/ | |
2634 | ||
2635 | /* | |
2636 | * The following set of functions act on ECP EISA boards. | |
2637 | */ | |
2638 | ||
1f8ec435 | 2639 | static void stli_ecpeiinit(struct stlibrd *brdp) |
1da177e4 LT |
2640 | { |
2641 | unsigned long memconf; | |
2642 | ||
1da177e4 LT |
2643 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
2644 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2645 | udelay(10); | |
2646 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2647 | udelay(500); | |
2648 | ||
2649 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; | |
2650 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); | |
2651 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; | |
2652 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); | |
2653 | } | |
2654 | ||
2655 | /*****************************************************************************/ | |
2656 | ||
1f8ec435 | 2657 | static void stli_ecpeienable(struct stlibrd *brdp) |
1da177e4 LT |
2658 | { |
2659 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); | |
2660 | } | |
2661 | ||
2662 | /*****************************************************************************/ | |
2663 | ||
1f8ec435 | 2664 | static void stli_ecpeidisable(struct stlibrd *brdp) |
1da177e4 LT |
2665 | { |
2666 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2667 | } | |
2668 | ||
2669 | /*****************************************************************************/ | |
2670 | ||
1f8ec435 | 2671 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2672 | { |
29756fa3 | 2673 | void __iomem *ptr; |
1da177e4 LT |
2674 | unsigned char val; |
2675 | ||
1da177e4 | 2676 | if (offset > brdp->memsize) { |
a6614999 | 2677 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2678 | "range at line=%d(%d), brd=%d\n", |
2679 | (int) offset, line, __LINE__, brdp->brdnr); | |
2680 | ptr = NULL; | |
2681 | val = 0; | |
2682 | } else { | |
2683 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); | |
2684 | if (offset < ECP_EIPAGESIZE) | |
2685 | val = ECP_EIENABLE; | |
2686 | else | |
2687 | val = ECP_EIENABLE | 0x40; | |
2688 | } | |
2689 | outb(val, (brdp->iobase + ECP_EICONFR)); | |
2690 | return(ptr); | |
2691 | } | |
2692 | ||
2693 | /*****************************************************************************/ | |
2694 | ||
1f8ec435 | 2695 | static void stli_ecpeireset(struct stlibrd *brdp) |
1da177e4 LT |
2696 | { |
2697 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2698 | udelay(10); | |
2699 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2700 | udelay(500); | |
2701 | } | |
2702 | ||
2703 | /*****************************************************************************/ | |
2704 | ||
2705 | /* | |
2706 | * The following set of functions act on ECP MCA boards. | |
2707 | */ | |
2708 | ||
1f8ec435 | 2709 | static void stli_ecpmcenable(struct stlibrd *brdp) |
1da177e4 LT |
2710 | { |
2711 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); | |
2712 | } | |
2713 | ||
2714 | /*****************************************************************************/ | |
2715 | ||
1f8ec435 | 2716 | static void stli_ecpmcdisable(struct stlibrd *brdp) |
1da177e4 LT |
2717 | { |
2718 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2719 | } | |
2720 | ||
2721 | /*****************************************************************************/ | |
2722 | ||
1f8ec435 | 2723 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2724 | { |
29756fa3 | 2725 | void __iomem *ptr; |
4ac4360b | 2726 | unsigned char val; |
1da177e4 LT |
2727 | |
2728 | if (offset > brdp->memsize) { | |
a6614999 | 2729 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2730 | "range at line=%d(%d), brd=%d\n", |
2731 | (int) offset, line, __LINE__, brdp->brdnr); | |
2732 | ptr = NULL; | |
2733 | val = 0; | |
2734 | } else { | |
2735 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); | |
2736 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; | |
2737 | } | |
2738 | outb(val, (brdp->iobase + ECP_MCCONFR)); | |
2739 | return(ptr); | |
2740 | } | |
2741 | ||
2742 | /*****************************************************************************/ | |
2743 | ||
1f8ec435 | 2744 | static void stli_ecpmcreset(struct stlibrd *brdp) |
1da177e4 LT |
2745 | { |
2746 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); | |
2747 | udelay(10); | |
2748 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2749 | udelay(500); | |
2750 | } | |
2751 | ||
2752 | /*****************************************************************************/ | |
2753 | ||
2754 | /* | |
2755 | * The following set of functions act on ECP PCI boards. | |
2756 | */ | |
2757 | ||
1f8ec435 | 2758 | static void stli_ecppciinit(struct stlibrd *brdp) |
1da177e4 | 2759 | { |
1da177e4 LT |
2760 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
2761 | udelay(10); | |
2762 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
2763 | udelay(500); | |
2764 | } | |
2765 | ||
2766 | /*****************************************************************************/ | |
2767 | ||
1f8ec435 | 2768 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2769 | { |
29756fa3 | 2770 | void __iomem *ptr; |
1da177e4 LT |
2771 | unsigned char val; |
2772 | ||
1da177e4 | 2773 | if (offset > brdp->memsize) { |
a6614999 | 2774 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2775 | "range at line=%d(%d), board=%d\n", |
2776 | (int) offset, line, __LINE__, brdp->brdnr); | |
2777 | ptr = NULL; | |
2778 | val = 0; | |
2779 | } else { | |
2780 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); | |
2781 | val = (offset / ECP_PCIPAGESIZE) << 1; | |
2782 | } | |
2783 | outb(val, (brdp->iobase + ECP_PCICONFR)); | |
2784 | return(ptr); | |
2785 | } | |
2786 | ||
2787 | /*****************************************************************************/ | |
2788 | ||
1f8ec435 | 2789 | static void stli_ecppcireset(struct stlibrd *brdp) |
1da177e4 LT |
2790 | { |
2791 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
2792 | udelay(10); | |
2793 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
2794 | udelay(500); | |
2795 | } | |
2796 | ||
2797 | /*****************************************************************************/ | |
2798 | ||
2799 | /* | |
2800 | * The following routines act on ONboards. | |
2801 | */ | |
2802 | ||
1f8ec435 | 2803 | static void stli_onbinit(struct stlibrd *brdp) |
1da177e4 LT |
2804 | { |
2805 | unsigned long memconf; | |
2806 | ||
1da177e4 LT |
2807 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
2808 | udelay(10); | |
2809 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
2810 | mdelay(1000); | |
2811 | ||
2812 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; | |
2813 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); | |
2814 | outb(0x1, brdp->iobase); | |
2815 | mdelay(1); | |
2816 | } | |
2817 | ||
2818 | /*****************************************************************************/ | |
2819 | ||
1f8ec435 | 2820 | static void stli_onbenable(struct stlibrd *brdp) |
1da177e4 | 2821 | { |
1da177e4 LT |
2822 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); |
2823 | } | |
2824 | ||
2825 | /*****************************************************************************/ | |
2826 | ||
1f8ec435 | 2827 | static void stli_onbdisable(struct stlibrd *brdp) |
1da177e4 | 2828 | { |
1da177e4 LT |
2829 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); |
2830 | } | |
2831 | ||
2832 | /*****************************************************************************/ | |
2833 | ||
1f8ec435 | 2834 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2835 | { |
29756fa3 | 2836 | void __iomem *ptr; |
1da177e4 | 2837 | |
1da177e4 | 2838 | if (offset > brdp->memsize) { |
a6614999 | 2839 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2840 | "range at line=%d(%d), brd=%d\n", |
2841 | (int) offset, line, __LINE__, brdp->brdnr); | |
2842 | ptr = NULL; | |
2843 | } else { | |
2844 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); | |
2845 | } | |
2846 | return(ptr); | |
2847 | } | |
2848 | ||
2849 | /*****************************************************************************/ | |
2850 | ||
1f8ec435 | 2851 | static void stli_onbreset(struct stlibrd *brdp) |
1da177e4 | 2852 | { |
1da177e4 LT |
2853 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
2854 | udelay(10); | |
2855 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
2856 | mdelay(1000); | |
2857 | } | |
2858 | ||
2859 | /*****************************************************************************/ | |
2860 | ||
2861 | /* | |
2862 | * The following routines act on ONboard EISA. | |
2863 | */ | |
2864 | ||
1f8ec435 | 2865 | static void stli_onbeinit(struct stlibrd *brdp) |
1da177e4 LT |
2866 | { |
2867 | unsigned long memconf; | |
2868 | ||
1da177e4 LT |
2869 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
2870 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
2871 | udelay(10); | |
2872 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
2873 | mdelay(1000); | |
2874 | ||
2875 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; | |
2876 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); | |
2877 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; | |
2878 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); | |
2879 | outb(0x1, brdp->iobase); | |
2880 | mdelay(1); | |
2881 | } | |
2882 | ||
2883 | /*****************************************************************************/ | |
2884 | ||
1f8ec435 | 2885 | static void stli_onbeenable(struct stlibrd *brdp) |
1da177e4 | 2886 | { |
1da177e4 LT |
2887 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); |
2888 | } | |
2889 | ||
2890 | /*****************************************************************************/ | |
2891 | ||
1f8ec435 | 2892 | static void stli_onbedisable(struct stlibrd *brdp) |
1da177e4 | 2893 | { |
1da177e4 LT |
2894 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
2895 | } | |
2896 | ||
2897 | /*****************************************************************************/ | |
2898 | ||
1f8ec435 | 2899 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2900 | { |
29756fa3 | 2901 | void __iomem *ptr; |
4ac4360b | 2902 | unsigned char val; |
1da177e4 LT |
2903 | |
2904 | if (offset > brdp->memsize) { | |
a6614999 | 2905 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2906 | "range at line=%d(%d), brd=%d\n", |
2907 | (int) offset, line, __LINE__, brdp->brdnr); | |
2908 | ptr = NULL; | |
2909 | val = 0; | |
2910 | } else { | |
2911 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); | |
2912 | if (offset < ONB_EIPAGESIZE) | |
2913 | val = ONB_EIENABLE; | |
2914 | else | |
2915 | val = ONB_EIENABLE | 0x40; | |
2916 | } | |
2917 | outb(val, (brdp->iobase + ONB_EICONFR)); | |
2918 | return(ptr); | |
2919 | } | |
2920 | ||
2921 | /*****************************************************************************/ | |
2922 | ||
1f8ec435 | 2923 | static void stli_onbereset(struct stlibrd *brdp) |
1da177e4 | 2924 | { |
1da177e4 LT |
2925 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
2926 | udelay(10); | |
2927 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
2928 | mdelay(1000); | |
2929 | } | |
2930 | ||
2931 | /*****************************************************************************/ | |
2932 | ||
2933 | /* | |
2934 | * The following routines act on Brumby boards. | |
2935 | */ | |
2936 | ||
1f8ec435 | 2937 | static void stli_bbyinit(struct stlibrd *brdp) |
1da177e4 | 2938 | { |
1da177e4 LT |
2939 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
2940 | udelay(10); | |
2941 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
2942 | mdelay(1000); | |
2943 | outb(0x1, brdp->iobase); | |
2944 | mdelay(1); | |
2945 | } | |
2946 | ||
2947 | /*****************************************************************************/ | |
2948 | ||
1f8ec435 | 2949 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2950 | { |
29756fa3 | 2951 | void __iomem *ptr; |
4ac4360b | 2952 | unsigned char val; |
1da177e4 | 2953 | |
4ac4360b | 2954 | BUG_ON(offset > brdp->memsize); |
1da177e4 | 2955 | |
4ac4360b AC |
2956 | ptr = brdp->membase + (offset % BBY_PAGESIZE); |
2957 | val = (unsigned char) (offset / BBY_PAGESIZE); | |
1da177e4 LT |
2958 | outb(val, (brdp->iobase + BBY_ATCONFR)); |
2959 | return(ptr); | |
2960 | } | |
2961 | ||
2962 | /*****************************************************************************/ | |
2963 | ||
1f8ec435 | 2964 | static void stli_bbyreset(struct stlibrd *brdp) |
1da177e4 | 2965 | { |
1da177e4 LT |
2966 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
2967 | udelay(10); | |
2968 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
2969 | mdelay(1000); | |
2970 | } | |
2971 | ||
2972 | /*****************************************************************************/ | |
2973 | ||
2974 | /* | |
2975 | * The following routines act on original old Stallion boards. | |
2976 | */ | |
2977 | ||
1f8ec435 | 2978 | static void stli_stalinit(struct stlibrd *brdp) |
1da177e4 | 2979 | { |
1da177e4 LT |
2980 | outb(0x1, brdp->iobase); |
2981 | mdelay(1000); | |
2982 | } | |
2983 | ||
2984 | /*****************************************************************************/ | |
2985 | ||
1f8ec435 | 2986 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2987 | { |
4ac4360b AC |
2988 | BUG_ON(offset > brdp->memsize); |
2989 | return brdp->membase + (offset % STAL_PAGESIZE); | |
1da177e4 LT |
2990 | } |
2991 | ||
2992 | /*****************************************************************************/ | |
2993 | ||
1f8ec435 | 2994 | static void stli_stalreset(struct stlibrd *brdp) |
1da177e4 | 2995 | { |
4ac4360b | 2996 | u32 __iomem *vecp; |
1da177e4 | 2997 | |
4ac4360b AC |
2998 | vecp = (u32 __iomem *) (brdp->membase + 0x30); |
2999 | writel(0xffff0000, vecp); | |
1da177e4 LT |
3000 | outb(0, brdp->iobase); |
3001 | mdelay(1000); | |
3002 | } | |
3003 | ||
3004 | /*****************************************************************************/ | |
3005 | ||
3006 | /* | |
3007 | * Try to find an ECP board and initialize it. This handles only ECP | |
3008 | * board types. | |
3009 | */ | |
3010 | ||
1f8ec435 | 3011 | static int stli_initecp(struct stlibrd *brdp) |
1da177e4 | 3012 | { |
4ac4360b AC |
3013 | cdkecpsig_t sig; |
3014 | cdkecpsig_t __iomem *sigsp; | |
3015 | unsigned int status, nxtid; | |
3016 | char *name; | |
8f8f5a58 | 3017 | int retval, panelnr, nrports; |
1da177e4 | 3018 | |
8f8f5a58 JS |
3019 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) { |
3020 | retval = -ENODEV; | |
3021 | goto err; | |
3022 | } | |
3023 | ||
b306122d IK |
3024 | brdp->iosize = ECP_IOSIZE; |
3025 | ||
8f8f5a58 JS |
3026 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3027 | retval = -EIO; | |
3028 | goto err; | |
1da177e4 LT |
3029 | } |
3030 | ||
1da177e4 LT |
3031 | /* |
3032 | * Based on the specific board type setup the common vars to access | |
3033 | * and enable shared memory. Set all board specific information now | |
3034 | * as well. | |
3035 | */ | |
3036 | switch (brdp->brdtype) { | |
3037 | case BRD_ECP: | |
1da177e4 LT |
3038 | brdp->memsize = ECP_MEMSIZE; |
3039 | brdp->pagesize = ECP_ATPAGESIZE; | |
3040 | brdp->init = stli_ecpinit; | |
3041 | brdp->enable = stli_ecpenable; | |
3042 | brdp->reenable = stli_ecpenable; | |
3043 | brdp->disable = stli_ecpdisable; | |
3044 | brdp->getmemptr = stli_ecpgetmemptr; | |
3045 | brdp->intr = stli_ecpintr; | |
3046 | brdp->reset = stli_ecpreset; | |
3047 | name = "serial(EC8/64)"; | |
3048 | break; | |
3049 | ||
3050 | case BRD_ECPE: | |
1da177e4 LT |
3051 | brdp->memsize = ECP_MEMSIZE; |
3052 | brdp->pagesize = ECP_EIPAGESIZE; | |
3053 | brdp->init = stli_ecpeiinit; | |
3054 | brdp->enable = stli_ecpeienable; | |
3055 | brdp->reenable = stli_ecpeienable; | |
3056 | brdp->disable = stli_ecpeidisable; | |
3057 | brdp->getmemptr = stli_ecpeigetmemptr; | |
3058 | brdp->intr = stli_ecpintr; | |
3059 | brdp->reset = stli_ecpeireset; | |
3060 | name = "serial(EC8/64-EI)"; | |
3061 | break; | |
3062 | ||
3063 | case BRD_ECPMC: | |
1da177e4 LT |
3064 | brdp->memsize = ECP_MEMSIZE; |
3065 | brdp->pagesize = ECP_MCPAGESIZE; | |
3066 | brdp->init = NULL; | |
3067 | brdp->enable = stli_ecpmcenable; | |
3068 | brdp->reenable = stli_ecpmcenable; | |
3069 | brdp->disable = stli_ecpmcdisable; | |
3070 | brdp->getmemptr = stli_ecpmcgetmemptr; | |
3071 | brdp->intr = stli_ecpintr; | |
3072 | brdp->reset = stli_ecpmcreset; | |
3073 | name = "serial(EC8/64-MCA)"; | |
3074 | break; | |
3075 | ||
3076 | case BRD_ECPPCI: | |
1da177e4 LT |
3077 | brdp->memsize = ECP_PCIMEMSIZE; |
3078 | brdp->pagesize = ECP_PCIPAGESIZE; | |
3079 | brdp->init = stli_ecppciinit; | |
3080 | brdp->enable = NULL; | |
3081 | brdp->reenable = NULL; | |
3082 | brdp->disable = NULL; | |
3083 | brdp->getmemptr = stli_ecppcigetmemptr; | |
3084 | brdp->intr = stli_ecpintr; | |
3085 | brdp->reset = stli_ecppcireset; | |
3086 | name = "serial(EC/RA-PCI)"; | |
3087 | break; | |
3088 | ||
3089 | default: | |
8f8f5a58 JS |
3090 | retval = -EINVAL; |
3091 | goto err_reg; | |
1da177e4 LT |
3092 | } |
3093 | ||
3094 | /* | |
3095 | * The per-board operations structure is all set up, so now let's go | |
3096 | * and get the board operational. Firstly initialize board configuration | |
3097 | * registers. Set the memory mapping info so we can get at the boards | |
3098 | * shared memory. | |
3099 | */ | |
3100 | EBRDINIT(brdp); | |
3101 | ||
24cb2335 | 3102 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
8f8f5a58 JS |
3103 | if (brdp->membase == NULL) { |
3104 | retval = -ENOMEM; | |
3105 | goto err_reg; | |
1da177e4 LT |
3106 | } |
3107 | ||
3108 | /* | |
3109 | * Now that all specific code is set up, enable the shared memory and | |
3110 | * look for the a signature area that will tell us exactly what board | |
3111 | * this is, and what it is connected to it. | |
3112 | */ | |
3113 | EBRDENABLE(brdp); | |
4ac4360b | 3114 | sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
634965f5 | 3115 | memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); |
1da177e4 LT |
3116 | EBRDDISABLE(brdp); |
3117 | ||
8f8f5a58 JS |
3118 | if (sig.magic != cpu_to_le32(ECP_MAGIC)) { |
3119 | retval = -ENODEV; | |
3120 | goto err_unmap; | |
1da177e4 LT |
3121 | } |
3122 | ||
3123 | /* | |
3124 | * Scan through the signature looking at the panels connected to the | |
3125 | * board. Calculate the total number of ports as we go. | |
3126 | */ | |
3127 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { | |
3128 | status = sig.panelid[nxtid]; | |
3129 | if ((status & ECH_PNLIDMASK) != nxtid) | |
3130 | break; | |
3131 | ||
3132 | brdp->panelids[panelnr] = status; | |
3133 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; | |
3134 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) | |
3135 | nxtid++; | |
3136 | brdp->panels[panelnr] = nrports; | |
3137 | brdp->nrports += nrports; | |
3138 | nxtid++; | |
3139 | brdp->nrpanels++; | |
3140 | } | |
3141 | ||
3142 | ||
3143 | brdp->state |= BST_FOUND; | |
4ac4360b | 3144 | return 0; |
8f8f5a58 JS |
3145 | err_unmap: |
3146 | iounmap(brdp->membase); | |
3147 | brdp->membase = NULL; | |
3148 | err_reg: | |
3149 | release_region(brdp->iobase, brdp->iosize); | |
3150 | err: | |
3151 | return retval; | |
1da177e4 LT |
3152 | } |
3153 | ||
3154 | /*****************************************************************************/ | |
3155 | ||
3156 | /* | |
3157 | * Try to find an ONboard, Brumby or Stallion board and initialize it. | |
3158 | * This handles only these board types. | |
3159 | */ | |
3160 | ||
1f8ec435 | 3161 | static int stli_initonb(struct stlibrd *brdp) |
1da177e4 | 3162 | { |
4ac4360b AC |
3163 | cdkonbsig_t sig; |
3164 | cdkonbsig_t __iomem *sigsp; | |
3165 | char *name; | |
8f8f5a58 | 3166 | int i, retval; |
1da177e4 LT |
3167 | |
3168 | /* | |
3169 | * Do a basic sanity check on the IO and memory addresses. | |
3170 | */ | |
8f8f5a58 JS |
3171 | if (brdp->iobase == 0 || brdp->memaddr == 0) { |
3172 | retval = -ENODEV; | |
3173 | goto err; | |
3174 | } | |
1da177e4 LT |
3175 | |
3176 | brdp->iosize = ONB_IOSIZE; | |
3177 | ||
8f8f5a58 JS |
3178 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3179 | retval = -EIO; | |
3180 | goto err; | |
3181 | } | |
1da177e4 LT |
3182 | |
3183 | /* | |
3184 | * Based on the specific board type setup the common vars to access | |
3185 | * and enable shared memory. Set all board specific information now | |
3186 | * as well. | |
3187 | */ | |
3188 | switch (brdp->brdtype) { | |
3189 | case BRD_ONBOARD: | |
1da177e4 | 3190 | case BRD_ONBOARD2: |
1da177e4 LT |
3191 | brdp->memsize = ONB_MEMSIZE; |
3192 | brdp->pagesize = ONB_ATPAGESIZE; | |
3193 | brdp->init = stli_onbinit; | |
3194 | brdp->enable = stli_onbenable; | |
3195 | brdp->reenable = stli_onbenable; | |
3196 | brdp->disable = stli_onbdisable; | |
3197 | brdp->getmemptr = stli_onbgetmemptr; | |
3198 | brdp->intr = stli_ecpintr; | |
3199 | brdp->reset = stli_onbreset; | |
3200 | if (brdp->memaddr > 0x100000) | |
3201 | brdp->enabval = ONB_MEMENABHI; | |
3202 | else | |
3203 | brdp->enabval = ONB_MEMENABLO; | |
3204 | name = "serial(ONBoard)"; | |
3205 | break; | |
3206 | ||
3207 | case BRD_ONBOARDE: | |
1da177e4 LT |
3208 | brdp->memsize = ONB_EIMEMSIZE; |
3209 | brdp->pagesize = ONB_EIPAGESIZE; | |
3210 | brdp->init = stli_onbeinit; | |
3211 | brdp->enable = stli_onbeenable; | |
3212 | brdp->reenable = stli_onbeenable; | |
3213 | brdp->disable = stli_onbedisable; | |
3214 | brdp->getmemptr = stli_onbegetmemptr; | |
3215 | brdp->intr = stli_ecpintr; | |
3216 | brdp->reset = stli_onbereset; | |
3217 | name = "serial(ONBoard/E)"; | |
3218 | break; | |
3219 | ||
3220 | case BRD_BRUMBY4: | |
1da177e4 LT |
3221 | brdp->memsize = BBY_MEMSIZE; |
3222 | brdp->pagesize = BBY_PAGESIZE; | |
3223 | brdp->init = stli_bbyinit; | |
3224 | brdp->enable = NULL; | |
3225 | brdp->reenable = NULL; | |
3226 | brdp->disable = NULL; | |
3227 | brdp->getmemptr = stli_bbygetmemptr; | |
3228 | brdp->intr = stli_ecpintr; | |
3229 | brdp->reset = stli_bbyreset; | |
3230 | name = "serial(Brumby)"; | |
3231 | break; | |
3232 | ||
3233 | case BRD_STALLION: | |
1da177e4 LT |
3234 | brdp->memsize = STAL_MEMSIZE; |
3235 | brdp->pagesize = STAL_PAGESIZE; | |
3236 | brdp->init = stli_stalinit; | |
3237 | brdp->enable = NULL; | |
3238 | brdp->reenable = NULL; | |
3239 | brdp->disable = NULL; | |
3240 | brdp->getmemptr = stli_stalgetmemptr; | |
3241 | brdp->intr = stli_ecpintr; | |
3242 | brdp->reset = stli_stalreset; | |
3243 | name = "serial(Stallion)"; | |
3244 | break; | |
3245 | ||
3246 | default: | |
8f8f5a58 JS |
3247 | retval = -EINVAL; |
3248 | goto err_reg; | |
1da177e4 LT |
3249 | } |
3250 | ||
3251 | /* | |
3252 | * The per-board operations structure is all set up, so now let's go | |
3253 | * and get the board operational. Firstly initialize board configuration | |
3254 | * registers. Set the memory mapping info so we can get at the boards | |
3255 | * shared memory. | |
3256 | */ | |
3257 | EBRDINIT(brdp); | |
3258 | ||
24cb2335 | 3259 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
8f8f5a58 JS |
3260 | if (brdp->membase == NULL) { |
3261 | retval = -ENOMEM; | |
3262 | goto err_reg; | |
1da177e4 LT |
3263 | } |
3264 | ||
3265 | /* | |
3266 | * Now that all specific code is set up, enable the shared memory and | |
3267 | * look for the a signature area that will tell us exactly what board | |
3268 | * this is, and how many ports. | |
3269 | */ | |
3270 | EBRDENABLE(brdp); | |
4ac4360b AC |
3271 | sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
3272 | memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); | |
1da177e4 LT |
3273 | EBRDDISABLE(brdp); |
3274 | ||
4ac4360b AC |
3275 | if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || |
3276 | sig.magic1 != cpu_to_le16(ONB_MAGIC1) || | |
3277 | sig.magic2 != cpu_to_le16(ONB_MAGIC2) || | |
8f8f5a58 JS |
3278 | sig.magic3 != cpu_to_le16(ONB_MAGIC3)) { |
3279 | retval = -ENODEV; | |
3280 | goto err_unmap; | |
1da177e4 LT |
3281 | } |
3282 | ||
3283 | /* | |
3284 | * Scan through the signature alive mask and calculate how many ports | |
3285 | * there are on this board. | |
3286 | */ | |
3287 | brdp->nrpanels = 1; | |
3288 | if (sig.amask1) { | |
3289 | brdp->nrports = 32; | |
3290 | } else { | |
3291 | for (i = 0; (i < 16); i++) { | |
3292 | if (((sig.amask0 << i) & 0x8000) == 0) | |
3293 | break; | |
3294 | } | |
3295 | brdp->nrports = i; | |
3296 | } | |
3297 | brdp->panels[0] = brdp->nrports; | |
3298 | ||
3299 | ||
3300 | brdp->state |= BST_FOUND; | |
4ac4360b | 3301 | return 0; |
8f8f5a58 JS |
3302 | err_unmap: |
3303 | iounmap(brdp->membase); | |
3304 | brdp->membase = NULL; | |
3305 | err_reg: | |
3306 | release_region(brdp->iobase, brdp->iosize); | |
3307 | err: | |
3308 | return retval; | |
1da177e4 LT |
3309 | } |
3310 | ||
3311 | /*****************************************************************************/ | |
3312 | ||
3313 | /* | |
3314 | * Start up a running board. This routine is only called after the | |
3315 | * code has been down loaded to the board and is operational. It will | |
3316 | * read in the memory map, and get the show on the road... | |
3317 | */ | |
3318 | ||
1f8ec435 | 3319 | static int stli_startbrd(struct stlibrd *brdp) |
1da177e4 | 3320 | { |
4ac4360b AC |
3321 | cdkhdr_t __iomem *hdrp; |
3322 | cdkmem_t __iomem *memp; | |
3323 | cdkasy_t __iomem *ap; | |
3324 | unsigned long flags; | |
1328d737 | 3325 | unsigned int portnr, nrdevs, i; |
1f8ec435 | 3326 | struct stliport *portp; |
1328d737 | 3327 | int rc = 0; |
4ac4360b AC |
3328 | u32 memoff; |
3329 | ||
3330 | spin_lock_irqsave(&brd_lock, flags); | |
1da177e4 | 3331 | EBRDENABLE(brdp); |
4ac4360b | 3332 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1da177e4 LT |
3333 | nrdevs = hdrp->nrdevs; |
3334 | ||
3335 | #if 0 | |
3336 | printk("%s(%d): CDK version %d.%d.%d --> " | |
3337 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", | |
4ac4360b AC |
3338 | __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), |
3339 | readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), | |
3340 | readl(&hdrp->slavep)); | |
1da177e4 LT |
3341 | #endif |
3342 | ||
3343 | if (nrdevs < (brdp->nrports + 1)) { | |
a6614999 | 3344 | printk(KERN_ERR "istallion: slave failed to allocate memory for " |
1da177e4 LT |
3345 | "all devices, devices=%d\n", nrdevs); |
3346 | brdp->nrports = nrdevs - 1; | |
3347 | } | |
3348 | brdp->nrdevs = nrdevs; | |
3349 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; | |
3350 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; | |
3351 | brdp->bitsize = (nrdevs + 7) / 8; | |
4ac4360b AC |
3352 | memoff = readl(&hdrp->memp); |
3353 | if (memoff > brdp->memsize) { | |
a6614999 | 3354 | printk(KERN_ERR "istallion: corrupted shared memory region?\n"); |
1da177e4 LT |
3355 | rc = -EIO; |
3356 | goto stli_donestartup; | |
3357 | } | |
4ac4360b AC |
3358 | memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); |
3359 | if (readw(&memp->dtype) != TYP_ASYNCTRL) { | |
a6614999 | 3360 | printk(KERN_ERR "istallion: no slave control device found\n"); |
1da177e4 LT |
3361 | goto stli_donestartup; |
3362 | } | |
3363 | memp++; | |
3364 | ||
3365 | /* | |
3366 | * Cycle through memory allocation of each port. We are guaranteed to | |
3367 | * have all ports inside the first page of slave window, so no need to | |
3368 | * change pages while reading memory map. | |
3369 | */ | |
3370 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { | |
4ac4360b | 3371 | if (readw(&memp->dtype) != TYP_ASYNC) |
1da177e4 LT |
3372 | break; |
3373 | portp = brdp->ports[portnr]; | |
4ac4360b | 3374 | if (portp == NULL) |
1da177e4 LT |
3375 | break; |
3376 | portp->devnr = i; | |
4ac4360b | 3377 | portp->addr = readl(&memp->offset); |
1da177e4 LT |
3378 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); |
3379 | portp->portidx = (unsigned char) (i / 8); | |
3380 | portp->portbit = (unsigned char) (0x1 << (i % 8)); | |
3381 | } | |
3382 | ||
4ac4360b | 3383 | writeb(0xff, &hdrp->slavereq); |
1da177e4 LT |
3384 | |
3385 | /* | |
3386 | * For each port setup a local copy of the RX and TX buffer offsets | |
3387 | * and sizes. We do this separate from the above, because we need to | |
3388 | * move the shared memory page... | |
3389 | */ | |
3390 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { | |
3391 | portp = brdp->ports[portnr]; | |
4ac4360b | 3392 | if (portp == NULL) |
1da177e4 LT |
3393 | break; |
3394 | if (portp->addr == 0) | |
3395 | break; | |
4ac4360b AC |
3396 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
3397 | if (ap != NULL) { | |
3398 | portp->rxsize = readw(&ap->rxq.size); | |
3399 | portp->txsize = readw(&ap->txq.size); | |
3400 | portp->rxoffset = readl(&ap->rxq.offset); | |
3401 | portp->txoffset = readl(&ap->txq.offset); | |
1da177e4 LT |
3402 | } |
3403 | } | |
3404 | ||
3405 | stli_donestartup: | |
3406 | EBRDDISABLE(brdp); | |
4ac4360b | 3407 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
3408 | |
3409 | if (rc == 0) | |
3410 | brdp->state |= BST_STARTED; | |
3411 | ||
3412 | if (! stli_timeron) { | |
3413 | stli_timeron++; | |
ff8efe97 | 3414 | mod_timer(&stli_timerlist, STLI_TIMEOUT); |
1da177e4 LT |
3415 | } |
3416 | ||
4ac4360b | 3417 | return rc; |
1da177e4 LT |
3418 | } |
3419 | ||
3420 | /*****************************************************************************/ | |
3421 | ||
3422 | /* | |
3423 | * Probe and initialize the specified board. | |
3424 | */ | |
3425 | ||
1f8ec435 | 3426 | static int __devinit stli_brdinit(struct stlibrd *brdp) |
1da177e4 | 3427 | { |
8f8f5a58 JS |
3428 | int retval; |
3429 | ||
1da177e4 LT |
3430 | switch (brdp->brdtype) { |
3431 | case BRD_ECP: | |
3432 | case BRD_ECPE: | |
3433 | case BRD_ECPMC: | |
3434 | case BRD_ECPPCI: | |
8f8f5a58 | 3435 | retval = stli_initecp(brdp); |
1da177e4 LT |
3436 | break; |
3437 | case BRD_ONBOARD: | |
3438 | case BRD_ONBOARDE: | |
3439 | case BRD_ONBOARD2: | |
1da177e4 | 3440 | case BRD_BRUMBY4: |
1da177e4 | 3441 | case BRD_STALLION: |
8f8f5a58 | 3442 | retval = stli_initonb(brdp); |
1da177e4 | 3443 | break; |
1da177e4 | 3444 | default: |
a6614999 | 3445 | printk(KERN_ERR "istallion: board=%d is unknown board " |
1da177e4 | 3446 | "type=%d\n", brdp->brdnr, brdp->brdtype); |
8f8f5a58 | 3447 | retval = -ENODEV; |
1da177e4 LT |
3448 | } |
3449 | ||
8f8f5a58 JS |
3450 | if (retval) |
3451 | return retval; | |
1da177e4 LT |
3452 | |
3453 | stli_initports(brdp); | |
a6614999 | 3454 | printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x " |
1da177e4 LT |
3455 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], |
3456 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, | |
3457 | brdp->nrpanels, brdp->nrports); | |
4ac4360b | 3458 | return 0; |
1da177e4 LT |
3459 | } |
3460 | ||
a00f33f3 | 3461 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3462 | /*****************************************************************************/ |
3463 | ||
3464 | /* | |
3465 | * Probe around trying to find where the EISA boards shared memory | |
3466 | * might be. This is a bit if hack, but it is the best we can do. | |
3467 | */ | |
3468 | ||
1f8ec435 | 3469 | static int stli_eisamemprobe(struct stlibrd *brdp) |
1da177e4 | 3470 | { |
4ac4360b AC |
3471 | cdkecpsig_t ecpsig, __iomem *ecpsigp; |
3472 | cdkonbsig_t onbsig, __iomem *onbsigp; | |
1da177e4 LT |
3473 | int i, foundit; |
3474 | ||
1da177e4 LT |
3475 | /* |
3476 | * First up we reset the board, to get it into a known state. There | |
3477 | * is only 2 board types here we need to worry about. Don;t use the | |
3478 | * standard board init routine here, it programs up the shared | |
3479 | * memory address, and we don't know it yet... | |
3480 | */ | |
3481 | if (brdp->brdtype == BRD_ECPE) { | |
3482 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
3483 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3484 | udelay(10); | |
3485 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3486 | udelay(500); | |
3487 | stli_ecpeienable(brdp); | |
3488 | } else if (brdp->brdtype == BRD_ONBOARDE) { | |
3489 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
3490 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3491 | udelay(10); | |
3492 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3493 | mdelay(100); | |
3494 | outb(0x1, brdp->iobase); | |
3495 | mdelay(1); | |
3496 | stli_onbeenable(brdp); | |
3497 | } else { | |
4ac4360b | 3498 | return -ENODEV; |
1da177e4 LT |
3499 | } |
3500 | ||
3501 | foundit = 0; | |
3502 | brdp->memsize = ECP_MEMSIZE; | |
3503 | ||
3504 | /* | |
3505 | * Board shared memory is enabled, so now we have a poke around and | |
3506 | * see if we can find it. | |
3507 | */ | |
3508 | for (i = 0; (i < stli_eisamempsize); i++) { | |
3509 | brdp->memaddr = stli_eisamemprobeaddrs[i]; | |
24cb2335 | 3510 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
4ac4360b | 3511 | if (brdp->membase == NULL) |
1da177e4 LT |
3512 | continue; |
3513 | ||
3514 | if (brdp->brdtype == BRD_ECPE) { | |
29756fa3 | 3515 | ecpsigp = stli_ecpeigetmemptr(brdp, |
1da177e4 | 3516 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3517 | memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); |
3518 | if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) | |
1da177e4 LT |
3519 | foundit = 1; |
3520 | } else { | |
4ac4360b | 3521 | onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, |
1da177e4 | 3522 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3523 | memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); |
3524 | if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && | |
3525 | (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && | |
3526 | (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && | |
3527 | (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) | |
1da177e4 LT |
3528 | foundit = 1; |
3529 | } | |
3530 | ||
3531 | iounmap(brdp->membase); | |
3532 | if (foundit) | |
3533 | break; | |
3534 | } | |
3535 | ||
3536 | /* | |
3537 | * Regardless of whether we found the shared memory or not we must | |
3538 | * disable the region. After that return success or failure. | |
3539 | */ | |
3540 | if (brdp->brdtype == BRD_ECPE) | |
3541 | stli_ecpeidisable(brdp); | |
3542 | else | |
3543 | stli_onbedisable(brdp); | |
3544 | ||
3545 | if (! foundit) { | |
3546 | brdp->memaddr = 0; | |
3547 | brdp->membase = NULL; | |
a6614999 | 3548 | printk(KERN_ERR "istallion: failed to probe shared memory " |
1da177e4 LT |
3549 | "region for %s in EISA slot=%d\n", |
3550 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); | |
4ac4360b | 3551 | return -ENODEV; |
1da177e4 | 3552 | } |
4ac4360b | 3553 | return 0; |
1da177e4 | 3554 | } |
a00f33f3 | 3555 | #endif |
1da177e4 LT |
3556 | |
3557 | static int stli_getbrdnr(void) | |
3558 | { | |
1328d737 | 3559 | unsigned int i; |
1da177e4 LT |
3560 | |
3561 | for (i = 0; i < STL_MAXBRDS; i++) { | |
3562 | if (!stli_brds[i]) { | |
3563 | if (i >= stli_nrbrds) | |
3564 | stli_nrbrds = i + 1; | |
3565 | return i; | |
3566 | } | |
3567 | } | |
3568 | return -1; | |
3569 | } | |
3570 | ||
a00f33f3 | 3571 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3572 | /*****************************************************************************/ |
3573 | ||
3574 | /* | |
3575 | * Probe around and try to find any EISA boards in system. The biggest | |
3576 | * problem here is finding out what memory address is associated with | |
3577 | * an EISA board after it is found. The registers of the ECPE and | |
3578 | * ONboardE are not readable - so we can't read them from there. We | |
3579 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't | |
3580 | * actually have any way to find out the real value. The best we can | |
3581 | * do is go probing around in the usual places hoping we can find it. | |
3582 | */ | |
3583 | ||
6005e3eb | 3584 | static int __init stli_findeisabrds(void) |
1da177e4 | 3585 | { |
1f8ec435 | 3586 | struct stlibrd *brdp; |
1328d737 | 3587 | unsigned int iobase, eid, i; |
8f8f5a58 | 3588 | int brdnr, found = 0; |
1da177e4 LT |
3589 | |
3590 | /* | |
4ac4360b | 3591 | * Firstly check if this is an EISA system. If this is not an EISA system then |
1da177e4 LT |
3592 | * don't bother going any further! |
3593 | */ | |
4ac4360b AC |
3594 | if (EISA_bus) |
3595 | return 0; | |
1da177e4 LT |
3596 | |
3597 | /* | |
3598 | * Looks like an EISA system, so go searching for EISA boards. | |
3599 | */ | |
3600 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { | |
3601 | outb(0xff, (iobase + 0xc80)); | |
3602 | eid = inb(iobase + 0xc80); | |
3603 | eid |= inb(iobase + 0xc81) << 8; | |
3604 | if (eid != STL_EISAID) | |
3605 | continue; | |
3606 | ||
3607 | /* | |
3608 | * We have found a board. Need to check if this board was | |
3609 | * statically configured already (just in case!). | |
3610 | */ | |
3611 | for (i = 0; (i < STL_MAXBRDS); i++) { | |
3612 | brdp = stli_brds[i]; | |
4ac4360b | 3613 | if (brdp == NULL) |
1da177e4 LT |
3614 | continue; |
3615 | if (brdp->iobase == iobase) | |
3616 | break; | |
3617 | } | |
3618 | if (i < STL_MAXBRDS) | |
3619 | continue; | |
3620 | ||
3621 | /* | |
3622 | * We have found a Stallion board and it is not configured already. | |
3623 | * Allocate a board structure and initialize it. | |
3624 | */ | |
4ac4360b | 3625 | if ((brdp = stli_allocbrd()) == NULL) |
8f8f5a58 | 3626 | return found ? : -ENOMEM; |
1328d737 JS |
3627 | brdnr = stli_getbrdnr(); |
3628 | if (brdnr < 0) | |
8f8f5a58 | 3629 | return found ? : -ENOMEM; |
1328d737 | 3630 | brdp->brdnr = (unsigned int)brdnr; |
1da177e4 LT |
3631 | eid = inb(iobase + 0xc82); |
3632 | if (eid == ECP_EISAID) | |
3633 | brdp->brdtype = BRD_ECPE; | |
3634 | else if (eid == ONB_EISAID) | |
3635 | brdp->brdtype = BRD_ONBOARDE; | |
3636 | else | |
3637 | brdp->brdtype = BRD_UNKNOWN; | |
3638 | brdp->iobase = iobase; | |
3639 | outb(0x1, (iobase + 0xc84)); | |
3640 | if (stli_eisamemprobe(brdp)) | |
3641 | outb(0, (iobase + 0xc84)); | |
8f8f5a58 JS |
3642 | if (stli_brdinit(brdp) < 0) { |
3643 | kfree(brdp); | |
3644 | continue; | |
3645 | } | |
3646 | ||
b103b5cf | 3647 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3648 | found++; |
ec3dde57 JS |
3649 | |
3650 | for (i = 0; i < brdp->nrports; i++) | |
3651 | tty_register_device(stli_serial, | |
3652 | brdp->brdnr * STL_MAXPORTS + i, NULL); | |
1da177e4 LT |
3653 | } |
3654 | ||
8f8f5a58 | 3655 | return found; |
1da177e4 | 3656 | } |
a00f33f3 JS |
3657 | #else |
3658 | static inline int stli_findeisabrds(void) { return 0; } | |
3659 | #endif | |
1da177e4 LT |
3660 | |
3661 | /*****************************************************************************/ | |
3662 | ||
3663 | /* | |
3664 | * Find the next available board number that is free. | |
3665 | */ | |
3666 | ||
3667 | /*****************************************************************************/ | |
3668 | ||
1da177e4 LT |
3669 | /* |
3670 | * We have a Stallion board. Allocate a board structure and | |
3671 | * initialize it. Read its IO and MEMORY resources from PCI | |
3672 | * configuration space. | |
3673 | */ | |
3674 | ||
845bead4 JS |
3675 | static int __devinit stli_pciprobe(struct pci_dev *pdev, |
3676 | const struct pci_device_id *ent) | |
1da177e4 | 3677 | { |
1f8ec435 | 3678 | struct stlibrd *brdp; |
ec3dde57 | 3679 | unsigned int i; |
1328d737 | 3680 | int brdnr, retval = -EIO; |
845bead4 JS |
3681 | |
3682 | retval = pci_enable_device(pdev); | |
3683 | if (retval) | |
3684 | goto err; | |
3685 | brdp = stli_allocbrd(); | |
3686 | if (brdp == NULL) { | |
3687 | retval = -ENOMEM; | |
3688 | goto err; | |
3689 | } | |
b103b5cf | 3690 | mutex_lock(&stli_brdslock); |
1328d737 | 3691 | brdnr = stli_getbrdnr(); |
b103b5cf | 3692 | if (brdnr < 0) { |
a6614999 | 3693 | printk(KERN_INFO "istallion: too many boards found, " |
1da177e4 | 3694 | "maximum supported %d\n", STL_MAXBRDS); |
b103b5cf | 3695 | mutex_unlock(&stli_brdslock); |
845bead4 JS |
3696 | retval = -EIO; |
3697 | goto err_fr; | |
1da177e4 | 3698 | } |
1328d737 | 3699 | brdp->brdnr = (unsigned int)brdnr; |
b103b5cf JS |
3700 | stli_brds[brdp->brdnr] = brdp; |
3701 | mutex_unlock(&stli_brdslock); | |
845bead4 | 3702 | brdp->brdtype = BRD_ECPPCI; |
1da177e4 LT |
3703 | /* |
3704 | * We have all resources from the board, so lets setup the actual | |
3705 | * board structure now. | |
3706 | */ | |
845bead4 JS |
3707 | brdp->iobase = pci_resource_start(pdev, 3); |
3708 | brdp->memaddr = pci_resource_start(pdev, 2); | |
3709 | retval = stli_brdinit(brdp); | |
3710 | if (retval) | |
b103b5cf | 3711 | goto err_null; |
845bead4 | 3712 | |
39014172 | 3713 | brdp->state |= BST_PROBED; |
845bead4 | 3714 | pci_set_drvdata(pdev, brdp); |
1da177e4 | 3715 | |
140e92ab JS |
3716 | EBRDENABLE(brdp); |
3717 | brdp->enable = NULL; | |
3718 | brdp->disable = NULL; | |
3719 | ||
ec3dde57 JS |
3720 | for (i = 0; i < brdp->nrports; i++) |
3721 | tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i, | |
3722 | &pdev->dev); | |
3723 | ||
4ac4360b | 3724 | return 0; |
b103b5cf JS |
3725 | err_null: |
3726 | stli_brds[brdp->brdnr] = NULL; | |
845bead4 JS |
3727 | err_fr: |
3728 | kfree(brdp); | |
3729 | err: | |
3730 | return retval; | |
1da177e4 LT |
3731 | } |
3732 | ||
0b9ce5a2 | 3733 | static void __devexit stli_pciremove(struct pci_dev *pdev) |
845bead4 | 3734 | { |
1f8ec435 | 3735 | struct stlibrd *brdp = pci_get_drvdata(pdev); |
1da177e4 | 3736 | |
845bead4 | 3737 | stli_cleanup_ports(brdp); |
1da177e4 | 3738 | |
845bead4 JS |
3739 | iounmap(brdp->membase); |
3740 | if (brdp->iosize > 0) | |
3741 | release_region(brdp->iobase, brdp->iosize); | |
1da177e4 | 3742 | |
845bead4 JS |
3743 | stli_brds[brdp->brdnr] = NULL; |
3744 | kfree(brdp); | |
1da177e4 LT |
3745 | } |
3746 | ||
845bead4 JS |
3747 | static struct pci_driver stli_pcidriver = { |
3748 | .name = "istallion", | |
3749 | .id_table = istallion_pci_tbl, | |
3750 | .probe = stli_pciprobe, | |
3751 | .remove = __devexit_p(stli_pciremove) | |
3752 | }; | |
1da177e4 LT |
3753 | /*****************************************************************************/ |
3754 | ||
3755 | /* | |
3756 | * Allocate a new board structure. Fill out the basic info in it. | |
3757 | */ | |
3758 | ||
1f8ec435 | 3759 | static struct stlibrd *stli_allocbrd(void) |
1da177e4 | 3760 | { |
1f8ec435 | 3761 | struct stlibrd *brdp; |
1da177e4 | 3762 | |
1f8ec435 | 3763 | brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL); |
b0b4ed72 | 3764 | if (!brdp) { |
a6614999 | 3765 | printk(KERN_ERR "istallion: failed to allocate memory " |
1f8ec435 | 3766 | "(size=%Zd)\n", sizeof(struct stlibrd)); |
b0b4ed72 | 3767 | return NULL; |
1da177e4 | 3768 | } |
1da177e4 | 3769 | brdp->magic = STLI_BOARDMAGIC; |
4ac4360b | 3770 | return brdp; |
1da177e4 LT |
3771 | } |
3772 | ||
3773 | /*****************************************************************************/ | |
3774 | ||
3775 | /* | |
3776 | * Scan through all the boards in the configuration and see what we | |
3777 | * can find. | |
3778 | */ | |
3779 | ||
6005e3eb | 3780 | static int __init stli_initbrds(void) |
1da177e4 | 3781 | { |
1f8ec435 JS |
3782 | struct stlibrd *brdp, *nxtbrdp; |
3783 | struct stlconf conf; | |
8f8f5a58 | 3784 | unsigned int i, j, found = 0; |
1328d737 | 3785 | int retval; |
1da177e4 | 3786 | |
a3f8d9d5 JS |
3787 | for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp); |
3788 | stli_nrbrds++) { | |
3789 | memset(&conf, 0, sizeof(conf)); | |
3790 | if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0) | |
3791 | continue; | |
4ac4360b | 3792 | if ((brdp = stli_allocbrd()) == NULL) |
a3f8d9d5 JS |
3793 | continue; |
3794 | brdp->brdnr = stli_nrbrds; | |
3795 | brdp->brdtype = conf.brdtype; | |
3796 | brdp->iobase = conf.ioaddr1; | |
3797 | brdp->memaddr = conf.memaddr; | |
8f8f5a58 JS |
3798 | if (stli_brdinit(brdp) < 0) { |
3799 | kfree(brdp); | |
3800 | continue; | |
3801 | } | |
b103b5cf | 3802 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3803 | found++; |
ec3dde57 JS |
3804 | |
3805 | for (i = 0; i < brdp->nrports; i++) | |
3806 | tty_register_device(stli_serial, | |
3807 | brdp->brdnr * STL_MAXPORTS + i, NULL); | |
1da177e4 LT |
3808 | } |
3809 | ||
8f8f5a58 JS |
3810 | retval = stli_findeisabrds(); |
3811 | if (retval > 0) | |
3812 | found += retval; | |
845bead4 | 3813 | |
1da177e4 LT |
3814 | /* |
3815 | * All found boards are initialized. Now for a little optimization, if | |
3816 | * no boards are sharing the "shared memory" regions then we can just | |
3817 | * leave them all enabled. This is in fact the usual case. | |
3818 | */ | |
3819 | stli_shared = 0; | |
3820 | if (stli_nrbrds > 1) { | |
3821 | for (i = 0; (i < stli_nrbrds); i++) { | |
3822 | brdp = stli_brds[i]; | |
4ac4360b | 3823 | if (brdp == NULL) |
1da177e4 LT |
3824 | continue; |
3825 | for (j = i + 1; (j < stli_nrbrds); j++) { | |
3826 | nxtbrdp = stli_brds[j]; | |
4ac4360b | 3827 | if (nxtbrdp == NULL) |
1da177e4 LT |
3828 | continue; |
3829 | if ((brdp->membase >= nxtbrdp->membase) && | |
3830 | (brdp->membase <= (nxtbrdp->membase + | |
3831 | nxtbrdp->memsize - 1))) { | |
3832 | stli_shared++; | |
3833 | break; | |
3834 | } | |
3835 | } | |
3836 | } | |
3837 | } | |
3838 | ||
3839 | if (stli_shared == 0) { | |
3840 | for (i = 0; (i < stli_nrbrds); i++) { | |
3841 | brdp = stli_brds[i]; | |
4ac4360b | 3842 | if (brdp == NULL) |
1da177e4 LT |
3843 | continue; |
3844 | if (brdp->state & BST_FOUND) { | |
3845 | EBRDENABLE(brdp); | |
3846 | brdp->enable = NULL; | |
3847 | brdp->disable = NULL; | |
3848 | } | |
3849 | } | |
3850 | } | |
3851 | ||
140e92ab JS |
3852 | retval = pci_register_driver(&stli_pcidriver); |
3853 | if (retval && found == 0) { | |
3854 | printk(KERN_ERR "Neither isa nor eisa cards found nor pci " | |
3855 | "driver can be registered!\n"); | |
3856 | goto err; | |
3857 | } | |
3858 | ||
4ac4360b | 3859 | return 0; |
8f8f5a58 JS |
3860 | err: |
3861 | return retval; | |
1da177e4 LT |
3862 | } |
3863 | ||
3864 | /*****************************************************************************/ | |
3865 | ||
3866 | /* | |
3867 | * Code to handle an "staliomem" read operation. This device is the | |
3868 | * contents of the board shared memory. It is used for down loading | |
3869 | * the slave image (and debugging :-) | |
3870 | */ | |
3871 | ||
3872 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) | |
3873 | { | |
4ac4360b | 3874 | unsigned long flags; |
29756fa3 | 3875 | void __iomem *memptr; |
1f8ec435 | 3876 | struct stlibrd *brdp; |
1328d737 JS |
3877 | unsigned int brdnr; |
3878 | int size, n; | |
4ac4360b AC |
3879 | void *p; |
3880 | loff_t off = *offp; | |
1da177e4 | 3881 | |
a7113a96 | 3882 | brdnr = iminor(fp->f_path.dentry->d_inode); |
1da177e4 | 3883 | if (brdnr >= stli_nrbrds) |
4ac4360b | 3884 | return -ENODEV; |
1da177e4 | 3885 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
3886 | if (brdp == NULL) |
3887 | return -ENODEV; | |
1da177e4 | 3888 | if (brdp->state == 0) |
4ac4360b AC |
3889 | return -ENODEV; |
3890 | if (off >= brdp->memsize || off + count < off) | |
3891 | return 0; | |
1da177e4 | 3892 | |
a3f8d9d5 | 3893 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
3894 | |
3895 | /* | |
3896 | * Copy the data a page at a time | |
3897 | */ | |
3898 | ||
3899 | p = (void *)__get_free_page(GFP_KERNEL); | |
3900 | if(p == NULL) | |
3901 | return -ENOMEM; | |
1da177e4 | 3902 | |
1da177e4 | 3903 | while (size > 0) { |
4ac4360b AC |
3904 | spin_lock_irqsave(&brd_lock, flags); |
3905 | EBRDENABLE(brdp); | |
29756fa3 | 3906 | memptr = EBRDGETMEMPTR(brdp, off); |
a3f8d9d5 JS |
3907 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
3908 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
3909 | memcpy_fromio(p, memptr, n); |
3910 | EBRDDISABLE(brdp); | |
3911 | spin_unlock_irqrestore(&brd_lock, flags); | |
3912 | if (copy_to_user(buf, p, n)) { | |
1da177e4 LT |
3913 | count = -EFAULT; |
3914 | goto out; | |
3915 | } | |
4ac4360b | 3916 | off += n; |
1da177e4 LT |
3917 | buf += n; |
3918 | size -= n; | |
3919 | } | |
3920 | out: | |
4ac4360b AC |
3921 | *offp = off; |
3922 | free_page((unsigned long)p); | |
3923 | return count; | |
1da177e4 LT |
3924 | } |
3925 | ||
3926 | /*****************************************************************************/ | |
3927 | ||
3928 | /* | |
3929 | * Code to handle an "staliomem" write operation. This device is the | |
3930 | * contents of the board shared memory. It is used for down loading | |
3931 | * the slave image (and debugging :-) | |
4ac4360b AC |
3932 | * |
3933 | * FIXME: copy under lock | |
1da177e4 LT |
3934 | */ |
3935 | ||
3936 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) | |
3937 | { | |
4ac4360b | 3938 | unsigned long flags; |
29756fa3 | 3939 | void __iomem *memptr; |
1f8ec435 | 3940 | struct stlibrd *brdp; |
4ac4360b | 3941 | char __user *chbuf; |
1328d737 JS |
3942 | unsigned int brdnr; |
3943 | int size, n; | |
4ac4360b AC |
3944 | void *p; |
3945 | loff_t off = *offp; | |
1da177e4 | 3946 | |
a7113a96 | 3947 | brdnr = iminor(fp->f_path.dentry->d_inode); |
4ac4360b | 3948 | |
1da177e4 | 3949 | if (brdnr >= stli_nrbrds) |
4ac4360b | 3950 | return -ENODEV; |
1da177e4 | 3951 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
3952 | if (brdp == NULL) |
3953 | return -ENODEV; | |
1da177e4 | 3954 | if (brdp->state == 0) |
4ac4360b AC |
3955 | return -ENODEV; |
3956 | if (off >= brdp->memsize || off + count < off) | |
3957 | return 0; | |
1da177e4 LT |
3958 | |
3959 | chbuf = (char __user *) buf; | |
a3f8d9d5 | 3960 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
3961 | |
3962 | /* | |
3963 | * Copy the data a page at a time | |
3964 | */ | |
3965 | ||
3966 | p = (void *)__get_free_page(GFP_KERNEL); | |
3967 | if(p == NULL) | |
3968 | return -ENOMEM; | |
1da177e4 | 3969 | |
1da177e4 | 3970 | while (size > 0) { |
a3f8d9d5 JS |
3971 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
3972 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
3973 | if (copy_from_user(p, chbuf, n)) { |
3974 | if (count == 0) | |
3975 | count = -EFAULT; | |
1da177e4 LT |
3976 | goto out; |
3977 | } | |
4ac4360b AC |
3978 | spin_lock_irqsave(&brd_lock, flags); |
3979 | EBRDENABLE(brdp); | |
29756fa3 | 3980 | memptr = EBRDGETMEMPTR(brdp, off); |
4ac4360b AC |
3981 | memcpy_toio(memptr, p, n); |
3982 | EBRDDISABLE(brdp); | |
3983 | spin_unlock_irqrestore(&brd_lock, flags); | |
3984 | off += n; | |
1da177e4 LT |
3985 | chbuf += n; |
3986 | size -= n; | |
3987 | } | |
3988 | out: | |
4ac4360b AC |
3989 | free_page((unsigned long) p); |
3990 | *offp = off; | |
3991 | return count; | |
1da177e4 LT |
3992 | } |
3993 | ||
3994 | /*****************************************************************************/ | |
3995 | ||
3996 | /* | |
3997 | * Return the board stats structure to user app. | |
3998 | */ | |
3999 | ||
4000 | static int stli_getbrdstats(combrd_t __user *bp) | |
4001 | { | |
1f8ec435 | 4002 | struct stlibrd *brdp; |
1328d737 | 4003 | unsigned int i; |
1da177e4 LT |
4004 | |
4005 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) | |
4006 | return -EFAULT; | |
4007 | if (stli_brdstats.brd >= STL_MAXBRDS) | |
4ac4360b | 4008 | return -ENODEV; |
1da177e4 | 4009 | brdp = stli_brds[stli_brdstats.brd]; |
4ac4360b AC |
4010 | if (brdp == NULL) |
4011 | return -ENODEV; | |
1da177e4 LT |
4012 | |
4013 | memset(&stli_brdstats, 0, sizeof(combrd_t)); | |
4014 | stli_brdstats.brd = brdp->brdnr; | |
4015 | stli_brdstats.type = brdp->brdtype; | |
4016 | stli_brdstats.hwid = 0; | |
4017 | stli_brdstats.state = brdp->state; | |
4018 | stli_brdstats.ioaddr = brdp->iobase; | |
4019 | stli_brdstats.memaddr = brdp->memaddr; | |
4020 | stli_brdstats.nrpanels = brdp->nrpanels; | |
4021 | stli_brdstats.nrports = brdp->nrports; | |
4022 | for (i = 0; (i < brdp->nrpanels); i++) { | |
4023 | stli_brdstats.panels[i].panel = i; | |
4024 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; | |
4025 | stli_brdstats.panels[i].nrports = brdp->panels[i]; | |
4026 | } | |
4027 | ||
4028 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) | |
4029 | return -EFAULT; | |
4ac4360b | 4030 | return 0; |
1da177e4 LT |
4031 | } |
4032 | ||
4033 | /*****************************************************************************/ | |
4034 | ||
4035 | /* | |
4036 | * Resolve the referenced port number into a port struct pointer. | |
4037 | */ | |
4038 | ||
1328d737 JS |
4039 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, |
4040 | unsigned int portnr) | |
1da177e4 | 4041 | { |
1f8ec435 | 4042 | struct stlibrd *brdp; |
1328d737 | 4043 | unsigned int i; |
1da177e4 | 4044 | |
1328d737 | 4045 | if (brdnr >= STL_MAXBRDS) |
4ac4360b | 4046 | return NULL; |
1da177e4 | 4047 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4048 | if (brdp == NULL) |
4049 | return NULL; | |
1da177e4 LT |
4050 | for (i = 0; (i < panelnr); i++) |
4051 | portnr += brdp->panels[i]; | |
1328d737 | 4052 | if (portnr >= brdp->nrports) |
4ac4360b AC |
4053 | return NULL; |
4054 | return brdp->ports[portnr]; | |
1da177e4 LT |
4055 | } |
4056 | ||
4057 | /*****************************************************************************/ | |
4058 | ||
4059 | /* | |
4060 | * Return the port stats structure to user app. A NULL port struct | |
4061 | * pointer passed in means that we need to find out from the app | |
4062 | * what port to get stats for (used through board control device). | |
4063 | */ | |
4064 | ||
d18a750f | 4065 | static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp) |
1da177e4 LT |
4066 | { |
4067 | unsigned long flags; | |
1f8ec435 | 4068 | struct stlibrd *brdp; |
1da177e4 LT |
4069 | int rc; |
4070 | ||
4071 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4072 | ||
4ac4360b AC |
4073 | if (portp == NULL) |
4074 | return -ENODEV; | |
1da177e4 | 4075 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
4076 | if (brdp == NULL) |
4077 | return -ENODEV; | |
1da177e4 LT |
4078 | |
4079 | if (brdp->state & BST_STARTED) { | |
4080 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, | |
4081 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) | |
4ac4360b | 4082 | return rc; |
1da177e4 LT |
4083 | } else { |
4084 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); | |
4085 | } | |
4086 | ||
4087 | stli_comstats.brd = portp->brdnr; | |
4088 | stli_comstats.panel = portp->panelnr; | |
4089 | stli_comstats.port = portp->portnr; | |
4090 | stli_comstats.state = portp->state; | |
42a77a1b | 4091 | stli_comstats.flags = portp->port.flags; |
1da177e4 | 4092 | |
4ac4360b | 4093 | spin_lock_irqsave(&brd_lock, flags); |
d18a750f AC |
4094 | if (tty != NULL) { |
4095 | if (portp->port.tty == tty) { | |
4096 | stli_comstats.ttystate = tty->flags; | |
4ac4360b | 4097 | stli_comstats.rxbuffered = -1; |
d18a750f AC |
4098 | if (tty->termios != NULL) { |
4099 | stli_comstats.cflags = tty->termios->c_cflag; | |
4100 | stli_comstats.iflags = tty->termios->c_iflag; | |
4101 | stli_comstats.oflags = tty->termios->c_oflag; | |
4102 | stli_comstats.lflags = tty->termios->c_lflag; | |
1da177e4 LT |
4103 | } |
4104 | } | |
4105 | } | |
4ac4360b | 4106 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
4107 | |
4108 | stli_comstats.txtotal = stli_cdkstats.txchars; | |
4109 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; | |
4110 | stli_comstats.txbuffered = stli_cdkstats.txringq; | |
4111 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; | |
4112 | stli_comstats.rxoverrun = stli_cdkstats.overruns; | |
4113 | stli_comstats.rxparity = stli_cdkstats.parity; | |
4114 | stli_comstats.rxframing = stli_cdkstats.framing; | |
4115 | stli_comstats.rxlost = stli_cdkstats.ringover; | |
4116 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; | |
4117 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; | |
4118 | stli_comstats.txxon = stli_cdkstats.txstart; | |
4119 | stli_comstats.txxoff = stli_cdkstats.txstop; | |
4120 | stli_comstats.rxxon = stli_cdkstats.rxstart; | |
4121 | stli_comstats.rxxoff = stli_cdkstats.rxstop; | |
4122 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; | |
4123 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; | |
4124 | stli_comstats.modem = stli_cdkstats.dcdcnt; | |
4125 | stli_comstats.hwid = stli_cdkstats.hwid; | |
4126 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); | |
4127 | ||
4ac4360b | 4128 | return 0; |
1da177e4 LT |
4129 | } |
4130 | ||
4131 | /*****************************************************************************/ | |
4132 | ||
4133 | /* | |
4134 | * Return the port stats structure to user app. A NULL port struct | |
4135 | * pointer passed in means that we need to find out from the app | |
4136 | * what port to get stats for (used through board control device). | |
4137 | */ | |
4138 | ||
d18a750f AC |
4139 | static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, |
4140 | comstats_t __user *cp) | |
1da177e4 | 4141 | { |
1f8ec435 | 4142 | struct stlibrd *brdp; |
4ac4360b | 4143 | int rc; |
1da177e4 LT |
4144 | |
4145 | if (!portp) { | |
4146 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4147 | return -EFAULT; | |
4148 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4149 | stli_comstats.port); | |
4150 | if (!portp) | |
4151 | return -ENODEV; | |
4152 | } | |
4153 | ||
4154 | brdp = stli_brds[portp->brdnr]; | |
4155 | if (!brdp) | |
4156 | return -ENODEV; | |
4157 | ||
d18a750f | 4158 | if ((rc = stli_portcmdstats(tty, portp)) < 0) |
1da177e4 LT |
4159 | return rc; |
4160 | ||
4161 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? | |
4162 | -EFAULT : 0; | |
4163 | } | |
4164 | ||
4165 | /*****************************************************************************/ | |
4166 | ||
4167 | /* | |
4168 | * Clear the port stats structure. We also return it zeroed out... | |
4169 | */ | |
4170 | ||
1f8ec435 | 4171 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp) |
1da177e4 | 4172 | { |
1f8ec435 | 4173 | struct stlibrd *brdp; |
4ac4360b | 4174 | int rc; |
1da177e4 LT |
4175 | |
4176 | if (!portp) { | |
4177 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4178 | return -EFAULT; | |
4179 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4180 | stli_comstats.port); | |
4181 | if (!portp) | |
4182 | return -ENODEV; | |
4183 | } | |
4184 | ||
4185 | brdp = stli_brds[portp->brdnr]; | |
4186 | if (!brdp) | |
4187 | return -ENODEV; | |
4188 | ||
4189 | if (brdp->state & BST_STARTED) { | |
4190 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) | |
4191 | return rc; | |
4192 | } | |
4193 | ||
4194 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4195 | stli_comstats.brd = portp->brdnr; | |
4196 | stli_comstats.panel = portp->panelnr; | |
4197 | stli_comstats.port = portp->portnr; | |
4198 | ||
4199 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) | |
4200 | return -EFAULT; | |
4201 | return 0; | |
4202 | } | |
4203 | ||
4204 | /*****************************************************************************/ | |
4205 | ||
4206 | /* | |
4207 | * Return the entire driver ports structure to a user app. | |
4208 | */ | |
4209 | ||
1f8ec435 | 4210 | static int stli_getportstruct(struct stliport __user *arg) |
1da177e4 | 4211 | { |
1328d737 | 4212 | struct stliport stli_dummyport; |
1f8ec435 | 4213 | struct stliport *portp; |
1da177e4 | 4214 | |
1f8ec435 | 4215 | if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport))) |
1da177e4 LT |
4216 | return -EFAULT; |
4217 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, | |
4218 | stli_dummyport.portnr); | |
4219 | if (!portp) | |
4220 | return -ENODEV; | |
1f8ec435 | 4221 | if (copy_to_user(arg, portp, sizeof(struct stliport))) |
1da177e4 LT |
4222 | return -EFAULT; |
4223 | return 0; | |
4224 | } | |
4225 | ||
4226 | /*****************************************************************************/ | |
4227 | ||
4228 | /* | |
4229 | * Return the entire driver board structure to a user app. | |
4230 | */ | |
4231 | ||
1f8ec435 | 4232 | static int stli_getbrdstruct(struct stlibrd __user *arg) |
1da177e4 | 4233 | { |
1328d737 | 4234 | struct stlibrd stli_dummybrd; |
1f8ec435 | 4235 | struct stlibrd *brdp; |
1da177e4 | 4236 | |
1f8ec435 | 4237 | if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd))) |
1da177e4 | 4238 | return -EFAULT; |
1328d737 | 4239 | if (stli_dummybrd.brdnr >= STL_MAXBRDS) |
1da177e4 LT |
4240 | return -ENODEV; |
4241 | brdp = stli_brds[stli_dummybrd.brdnr]; | |
4242 | if (!brdp) | |
4243 | return -ENODEV; | |
1f8ec435 | 4244 | if (copy_to_user(arg, brdp, sizeof(struct stlibrd))) |
1da177e4 LT |
4245 | return -EFAULT; |
4246 | return 0; | |
4247 | } | |
4248 | ||
4249 | /*****************************************************************************/ | |
4250 | ||
4251 | /* | |
4252 | * The "staliomem" device is also required to do some special operations on | |
4253 | * the board. We need to be able to send an interrupt to the board, | |
4254 | * reset it, and start/stop it. | |
4255 | */ | |
4256 | ||
62687538 | 4257 | static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg) |
1da177e4 | 4258 | { |
1f8ec435 | 4259 | struct stlibrd *brdp; |
4ac4360b | 4260 | int brdnr, rc, done; |
1da177e4 LT |
4261 | void __user *argp = (void __user *)arg; |
4262 | ||
1da177e4 LT |
4263 | /* |
4264 | * First up handle the board independent ioctls. | |
4265 | */ | |
4266 | done = 0; | |
4267 | rc = 0; | |
4268 | ||
37361136 AC |
4269 | lock_kernel(); |
4270 | ||
1da177e4 LT |
4271 | switch (cmd) { |
4272 | case COM_GETPORTSTATS: | |
d18a750f | 4273 | rc = stli_getportstats(NULL, NULL, argp); |
1da177e4 LT |
4274 | done++; |
4275 | break; | |
4276 | case COM_CLRPORTSTATS: | |
4277 | rc = stli_clrportstats(NULL, argp); | |
4278 | done++; | |
4279 | break; | |
4280 | case COM_GETBRDSTATS: | |
4281 | rc = stli_getbrdstats(argp); | |
4282 | done++; | |
4283 | break; | |
4284 | case COM_READPORT: | |
4285 | rc = stli_getportstruct(argp); | |
4286 | done++; | |
4287 | break; | |
4288 | case COM_READBOARD: | |
4289 | rc = stli_getbrdstruct(argp); | |
4290 | done++; | |
4291 | break; | |
4292 | } | |
37361136 | 4293 | unlock_kernel(); |
1da177e4 LT |
4294 | |
4295 | if (done) | |
4ac4360b | 4296 | return rc; |
1da177e4 LT |
4297 | |
4298 | /* | |
4299 | * Now handle the board specific ioctls. These all depend on the | |
4300 | * minor number of the device they were called from. | |
4301 | */ | |
62687538 | 4302 | brdnr = iminor(fp->f_dentry->d_inode); |
1da177e4 | 4303 | if (brdnr >= STL_MAXBRDS) |
4ac4360b | 4304 | return -ENODEV; |
1da177e4 LT |
4305 | brdp = stli_brds[brdnr]; |
4306 | if (!brdp) | |
4ac4360b | 4307 | return -ENODEV; |
1da177e4 | 4308 | if (brdp->state == 0) |
4ac4360b | 4309 | return -ENODEV; |
1da177e4 | 4310 | |
37361136 AC |
4311 | lock_kernel(); |
4312 | ||
1da177e4 LT |
4313 | switch (cmd) { |
4314 | case STL_BINTR: | |
4315 | EBRDINTR(brdp); | |
4316 | break; | |
4317 | case STL_BSTART: | |
4318 | rc = stli_startbrd(brdp); | |
4319 | break; | |
4320 | case STL_BSTOP: | |
4321 | brdp->state &= ~BST_STARTED; | |
4322 | break; | |
4323 | case STL_BRESET: | |
4324 | brdp->state &= ~BST_STARTED; | |
4325 | EBRDRESET(brdp); | |
4326 | if (stli_shared == 0) { | |
4327 | if (brdp->reenable != NULL) | |
4328 | (* brdp->reenable)(brdp); | |
4329 | } | |
4330 | break; | |
4331 | default: | |
4332 | rc = -ENOIOCTLCMD; | |
4333 | break; | |
4334 | } | |
37361136 | 4335 | unlock_kernel(); |
4ac4360b | 4336 | return rc; |
1da177e4 LT |
4337 | } |
4338 | ||
b68e31d0 | 4339 | static const struct tty_operations stli_ops = { |
1da177e4 LT |
4340 | .open = stli_open, |
4341 | .close = stli_close, | |
4342 | .write = stli_write, | |
4343 | .put_char = stli_putchar, | |
4344 | .flush_chars = stli_flushchars, | |
4345 | .write_room = stli_writeroom, | |
4346 | .chars_in_buffer = stli_charsinbuffer, | |
4347 | .ioctl = stli_ioctl, | |
4348 | .set_termios = stli_settermios, | |
4349 | .throttle = stli_throttle, | |
4350 | .unthrottle = stli_unthrottle, | |
4351 | .stop = stli_stop, | |
4352 | .start = stli_start, | |
4353 | .hangup = stli_hangup, | |
4354 | .flush_buffer = stli_flushbuffer, | |
4355 | .break_ctl = stli_breakctl, | |
4356 | .wait_until_sent = stli_waituntilsent, | |
4357 | .send_xchar = stli_sendxchar, | |
1da177e4 LT |
4358 | .tiocmget = stli_tiocmget, |
4359 | .tiocmset = stli_tiocmset, | |
5bd6de7d | 4360 | .proc_fops = &stli_proc_fops, |
1da177e4 LT |
4361 | }; |
4362 | ||
31f35939 AC |
4363 | static const struct tty_port_operations stli_port_ops = { |
4364 | .carrier_raised = stli_carrier_raised, | |
fcc8ac18 | 4365 | .dtr_rts = stli_dtr_rts, |
338818fd AC |
4366 | .activate = stli_activate, |
4367 | .shutdown = stli_shutdown, | |
31f35939 AC |
4368 | }; |
4369 | ||
1da177e4 | 4370 | /*****************************************************************************/ |
f1cc54f8 JS |
4371 | /* |
4372 | * Loadable module initialization stuff. | |
4373 | */ | |
1da177e4 | 4374 | |
f2362c94 JS |
4375 | static void istallion_cleanup_isa(void) |
4376 | { | |
4377 | struct stlibrd *brdp; | |
4378 | unsigned int j; | |
4379 | ||
4380 | for (j = 0; (j < stli_nrbrds); j++) { | |
4381 | if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED)) | |
4382 | continue; | |
4383 | ||
4384 | stli_cleanup_ports(brdp); | |
4385 | ||
4386 | iounmap(brdp->membase); | |
4387 | if (brdp->iosize > 0) | |
4388 | release_region(brdp->iobase, brdp->iosize); | |
4389 | kfree(brdp); | |
4390 | stli_brds[j] = NULL; | |
4391 | } | |
4392 | } | |
4393 | ||
f1cc54f8 | 4394 | static int __init istallion_module_init(void) |
1da177e4 | 4395 | { |
f2362c94 JS |
4396 | unsigned int i; |
4397 | int retval; | |
f1cc54f8 | 4398 | |
1da177e4 LT |
4399 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); |
4400 | ||
4ac4360b AC |
4401 | spin_lock_init(&stli_lock); |
4402 | spin_lock_init(&brd_lock); | |
4403 | ||
b0b4ed72 | 4404 | stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); |
f2362c94 | 4405 | if (!stli_txcookbuf) { |
a6614999 | 4406 | printk(KERN_ERR "istallion: failed to allocate memory " |
1da177e4 | 4407 | "(size=%d)\n", STLI_TXBUFSIZE); |
f2362c94 JS |
4408 | retval = -ENOMEM; |
4409 | goto err; | |
4410 | } | |
1da177e4 | 4411 | |
f2362c94 JS |
4412 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); |
4413 | if (!stli_serial) { | |
4414 | retval = -ENOMEM; | |
4415 | goto err_free; | |
4416 | } | |
1da177e4 | 4417 | |
1da177e4 LT |
4418 | stli_serial->owner = THIS_MODULE; |
4419 | stli_serial->driver_name = stli_drvname; | |
4420 | stli_serial->name = stli_serialname; | |
4421 | stli_serial->major = STL_SERIALMAJOR; | |
4422 | stli_serial->minor_start = 0; | |
4423 | stli_serial->type = TTY_DRIVER_TYPE_SERIAL; | |
4424 | stli_serial->subtype = SERIAL_TYPE_NORMAL; | |
4425 | stli_serial->init_termios = stli_deftermios; | |
ec3dde57 | 4426 | stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 LT |
4427 | tty_set_operations(stli_serial, &stli_ops); |
4428 | ||
f2362c94 JS |
4429 | retval = tty_register_driver(stli_serial); |
4430 | if (retval) { | |
a6614999 | 4431 | printk(KERN_ERR "istallion: failed to register serial driver\n"); |
f2362c94 JS |
4432 | goto err_ttyput; |
4433 | } | |
4434 | ||
4435 | retval = stli_initbrds(); | |
4436 | if (retval) | |
4437 | goto err_ttyunr; | |
4438 | ||
4439 | /* | |
4440 | * Set up a character driver for the shared memory region. We need this | |
4441 | * to down load the slave code image. Also it is a useful debugging tool. | |
4442 | */ | |
4443 | retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem); | |
4444 | if (retval) { | |
a6614999 | 4445 | printk(KERN_ERR "istallion: failed to register serial memory " |
f2362c94 JS |
4446 | "device\n"); |
4447 | goto err_deinit; | |
1da177e4 | 4448 | } |
f2362c94 JS |
4449 | |
4450 | istallion_class = class_create(THIS_MODULE, "staliomem"); | |
4451 | for (i = 0; i < 4; i++) | |
03457cd4 GKH |
4452 | device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), |
4453 | NULL, "staliomem%d", i); | |
f2362c94 | 4454 | |
4ac4360b | 4455 | return 0; |
f2362c94 JS |
4456 | err_deinit: |
4457 | pci_unregister_driver(&stli_pcidriver); | |
4458 | istallion_cleanup_isa(); | |
4459 | err_ttyunr: | |
4460 | tty_unregister_driver(stli_serial); | |
4461 | err_ttyput: | |
4462 | put_tty_driver(stli_serial); | |
4463 | err_free: | |
4464 | kfree(stli_txcookbuf); | |
4465 | err: | |
4466 | return retval; | |
1da177e4 LT |
4467 | } |
4468 | ||
4469 | /*****************************************************************************/ | |
f1cc54f8 JS |
4470 | |
4471 | static void __exit istallion_module_exit(void) | |
4472 | { | |
f1cc54f8 | 4473 | unsigned int j; |
f1cc54f8 JS |
4474 | |
4475 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, | |
4476 | stli_drvversion); | |
4477 | ||
f1cc54f8 JS |
4478 | if (stli_timeron) { |
4479 | stli_timeron = 0; | |
4480 | del_timer_sync(&stli_timerlist); | |
4481 | } | |
4482 | ||
f2362c94 JS |
4483 | unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); |
4484 | ||
f1cc54f8 | 4485 | for (j = 0; j < 4; j++) |
07c015e7 | 4486 | device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j)); |
f1cc54f8 | 4487 | class_destroy(istallion_class); |
f1cc54f8 | 4488 | |
f2362c94 JS |
4489 | pci_unregister_driver(&stli_pcidriver); |
4490 | istallion_cleanup_isa(); | |
f1cc54f8 | 4491 | |
f2362c94 JS |
4492 | tty_unregister_driver(stli_serial); |
4493 | put_tty_driver(stli_serial); | |
f1cc54f8 | 4494 | |
f2362c94 | 4495 | kfree(stli_txcookbuf); |
f1cc54f8 JS |
4496 | } |
4497 | ||
4498 | module_init(istallion_module_init); | |
4499 | module_exit(istallion_module_exit); |