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1da177e4 LT |
1 | /*****************************************************************************/ |
2 | ||
3 | /* | |
4 | * istallion.c -- stallion intelligent multiport serial driver. | |
5 | * | |
6 | * Copyright (C) 1996-1999 Stallion Technologies | |
7 | * Copyright (C) 1994-1996 Greg Ungerer. | |
8 | * | |
9 | * This code is loosely based on the Linux serial driver, written by | |
10 | * Linus Torvalds, Theodore T'so and others. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
1da177e4 LT |
17 | */ |
18 | ||
19 | /*****************************************************************************/ | |
20 | ||
1da177e4 | 21 | #include <linux/module.h> |
d43c36dc | 22 | #include <linux/sched.h> |
1da177e4 LT |
23 | #include <linux/slab.h> |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/tty.h> | |
26 | #include <linux/tty_flip.h> | |
27 | #include <linux/serial.h> | |
5bd6de7d | 28 | #include <linux/seq_file.h> |
1da177e4 LT |
29 | #include <linux/cdk.h> |
30 | #include <linux/comstats.h> | |
31 | #include <linux/istallion.h> | |
32 | #include <linux/ioport.h> | |
33 | #include <linux/delay.h> | |
34 | #include <linux/init.h> | |
1da177e4 LT |
35 | #include <linux/device.h> |
36 | #include <linux/wait.h> | |
4ac4360b | 37 | #include <linux/eisa.h> |
a3f8d9d5 | 38 | #include <linux/ctype.h> |
1da177e4 LT |
39 | |
40 | #include <asm/io.h> | |
41 | #include <asm/uaccess.h> | |
42 | ||
1da177e4 | 43 | #include <linux/pci.h> |
1da177e4 LT |
44 | |
45 | /*****************************************************************************/ | |
46 | ||
47 | /* | |
48 | * Define different board types. Not all of the following board types | |
49 | * are supported by this driver. But I will use the standard "assigned" | |
50 | * board numbers. Currently supported boards are abbreviated as: | |
51 | * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and | |
52 | * STAL = Stallion. | |
53 | */ | |
54 | #define BRD_UNKNOWN 0 | |
55 | #define BRD_STALLION 1 | |
56 | #define BRD_BRUMBY4 2 | |
57 | #define BRD_ONBOARD2 3 | |
58 | #define BRD_ONBOARD 4 | |
1da177e4 | 59 | #define BRD_ONBOARDE 7 |
1da177e4 LT |
60 | #define BRD_ECP 23 |
61 | #define BRD_ECPE 24 | |
62 | #define BRD_ECPMC 25 | |
1da177e4 LT |
63 | #define BRD_ECPPCI 29 |
64 | ||
65 | #define BRD_BRUMBY BRD_BRUMBY4 | |
66 | ||
67 | /* | |
68 | * Define a configuration structure to hold the board configuration. | |
69 | * Need to set this up in the code (for now) with the boards that are | |
70 | * to be configured into the system. This is what needs to be modified | |
71 | * when adding/removing/modifying boards. Each line entry in the | |
72 | * stli_brdconf[] array is a board. Each line contains io/irq/memory | |
73 | * ranges for that board (as well as what type of board it is). | |
74 | * Some examples: | |
75 | * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, | |
76 | * This line will configure an EasyConnection 8/64 at io address 2a0, | |
77 | * and shared memory address of cc000. Multiple EasyConnection 8/64 | |
78 | * boards can share the same shared memory address space. No interrupt | |
79 | * is required for this board type. | |
80 | * Another example: | |
81 | * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, | |
82 | * This line will configure an EasyConnection 8/64 EISA in slot 5 and | |
83 | * shared memory address of 0x80000000 (2 GByte). Multiple | |
84 | * EasyConnection 8/64 EISA boards can share the same shared memory | |
85 | * address space. No interrupt is required for this board type. | |
86 | * Another example: | |
87 | * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, | |
88 | * This line will configure an ONboard (ISA type) at io address 240, | |
89 | * and shared memory address of d0000. Multiple ONboards can share | |
90 | * the same shared memory address space. No interrupt required. | |
91 | * Another example: | |
92 | * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, | |
93 | * This line will configure a Brumby board (any number of ports!) at | |
94 | * io address 360 and shared memory address of c8000. All Brumby boards | |
95 | * configured into a system must have their own separate io and memory | |
96 | * addresses. No interrupt is required. | |
97 | * Another example: | |
98 | * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, | |
99 | * This line will configure an original Stallion board at io address 330 | |
100 | * and shared memory address d0000 (this would only be valid for a "V4.0" | |
101 | * or Rev.O Stallion board). All Stallion boards configured into the | |
102 | * system must have their own separate io and memory addresses. No | |
103 | * interrupt is required. | |
104 | */ | |
105 | ||
1f8ec435 | 106 | struct stlconf { |
1da177e4 LT |
107 | int brdtype; |
108 | int ioaddr1; | |
109 | int ioaddr2; | |
110 | unsigned long memaddr; | |
111 | int irq; | |
112 | int irqtype; | |
1f8ec435 | 113 | }; |
1da177e4 | 114 | |
1328d737 | 115 | static unsigned int stli_nrbrds; |
1da177e4 | 116 | |
4ac4360b AC |
117 | /* stli_lock must NOT be taken holding brd_lock */ |
118 | static spinlock_t stli_lock; /* TTY logic lock */ | |
119 | static spinlock_t brd_lock; /* Board logic lock */ | |
120 | ||
1da177e4 LT |
121 | /* |
122 | * There is some experimental EISA board detection code in this driver. | |
123 | * By default it is disabled, but for those that want to try it out, | |
124 | * then set the define below to be 1. | |
125 | */ | |
126 | #define STLI_EISAPROBE 0 | |
127 | ||
128 | /*****************************************************************************/ | |
129 | ||
130 | /* | |
131 | * Define some important driver characteristics. Device major numbers | |
132 | * allocated as per Linux Device Registry. | |
133 | */ | |
134 | #ifndef STL_SIOMEMMAJOR | |
135 | #define STL_SIOMEMMAJOR 28 | |
136 | #endif | |
137 | #ifndef STL_SERIALMAJOR | |
138 | #define STL_SERIALMAJOR 24 | |
139 | #endif | |
140 | #ifndef STL_CALLOUTMAJOR | |
141 | #define STL_CALLOUTMAJOR 25 | |
142 | #endif | |
143 | ||
144 | /*****************************************************************************/ | |
145 | ||
146 | /* | |
147 | * Define our local driver identity first. Set up stuff to deal with | |
148 | * all the local structures required by a serial tty driver. | |
149 | */ | |
150 | static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; | |
151 | static char *stli_drvname = "istallion"; | |
152 | static char *stli_drvversion = "5.6.0"; | |
153 | static char *stli_serialname = "ttyE"; | |
154 | ||
155 | static struct tty_driver *stli_serial; | |
31f35939 | 156 | static const struct tty_port_operations stli_port_ops; |
1da177e4 LT |
157 | |
158 | #define STLI_TXBUFSIZE 4096 | |
159 | ||
160 | /* | |
161 | * Use a fast local buffer for cooked characters. Typically a whole | |
162 | * bunch of cooked characters come in for a port, 1 at a time. So we | |
163 | * save those up into a local buffer, then write out the whole lot | |
164 | * with a large memcpy. Just use 1 buffer for all ports, since its | |
165 | * use it is only need for short periods of time by each port. | |
166 | */ | |
167 | static char *stli_txcookbuf; | |
168 | static int stli_txcooksize; | |
169 | static int stli_txcookrealsize; | |
170 | static struct tty_struct *stli_txcooktty; | |
171 | ||
172 | /* | |
173 | * Define a local default termios struct. All ports will be created | |
174 | * with this termios initially. Basically all it defines is a raw port | |
175 | * at 9600 baud, 8 data bits, no parity, 1 stop bit. | |
176 | */ | |
606d099c | 177 | static struct ktermios stli_deftermios = { |
1da177e4 LT |
178 | .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), |
179 | .c_cc = INIT_C_CC, | |
606d099c AC |
180 | .c_ispeed = 9600, |
181 | .c_ospeed = 9600, | |
1da177e4 LT |
182 | }; |
183 | ||
184 | /* | |
185 | * Define global stats structures. Not used often, and can be | |
186 | * re-used for each stats call. | |
187 | */ | |
188 | static comstats_t stli_comstats; | |
189 | static combrd_t stli_brdstats; | |
1f8ec435 | 190 | static struct asystats stli_cdkstats; |
1da177e4 LT |
191 | |
192 | /*****************************************************************************/ | |
193 | ||
b103b5cf | 194 | static DEFINE_MUTEX(stli_brdslock); |
1f8ec435 | 195 | static struct stlibrd *stli_brds[STL_MAXBRDS]; |
1da177e4 LT |
196 | |
197 | static int stli_shared; | |
198 | ||
199 | /* | |
200 | * Per board state flags. Used with the state field of the board struct. | |
201 | * Not really much here... All we need to do is keep track of whether | |
202 | * the board has been detected, and whether it is actually running a slave | |
203 | * or not. | |
204 | */ | |
8a1e803d AC |
205 | #define BST_FOUND 0 |
206 | #define BST_STARTED 1 | |
207 | #define BST_PROBED 2 | |
1da177e4 LT |
208 | |
209 | /* | |
210 | * Define the set of port state flags. These are marked for internal | |
211 | * state purposes only, usually to do with the state of communications | |
212 | * with the slave. Most of them need to be updated atomically, so always | |
213 | * use the bit setting operations (unless protected by cli/sti). | |
214 | */ | |
1da177e4 LT |
215 | #define ST_OPENING 2 |
216 | #define ST_CLOSING 3 | |
217 | #define ST_CMDING 4 | |
218 | #define ST_TXBUSY 5 | |
219 | #define ST_RXING 6 | |
220 | #define ST_DOFLUSHRX 7 | |
221 | #define ST_DOFLUSHTX 8 | |
222 | #define ST_DOSIGS 9 | |
223 | #define ST_RXSTOP 10 | |
224 | #define ST_GETSIGS 11 | |
225 | ||
226 | /* | |
227 | * Define an array of board names as printable strings. Handy for | |
228 | * referencing boards when printing trace and stuff. | |
229 | */ | |
230 | static char *stli_brdnames[] = { | |
231 | "Unknown", | |
232 | "Stallion", | |
233 | "Brumby", | |
234 | "ONboard-MC", | |
235 | "ONboard", | |
236 | "Brumby", | |
237 | "Brumby", | |
238 | "ONboard-EI", | |
a3f8d9d5 | 239 | NULL, |
1da177e4 LT |
240 | "ONboard", |
241 | "ONboard-MC", | |
242 | "ONboard-MC", | |
a3f8d9d5 JS |
243 | NULL, |
244 | NULL, | |
245 | NULL, | |
246 | NULL, | |
247 | NULL, | |
248 | NULL, | |
249 | NULL, | |
250 | NULL, | |
1da177e4 LT |
251 | "EasyIO", |
252 | "EC8/32-AT", | |
253 | "EC8/32-MC", | |
254 | "EC8/64-AT", | |
255 | "EC8/64-EI", | |
256 | "EC8/64-MC", | |
257 | "EC8/32-PCI", | |
258 | "EC8/64-PCI", | |
259 | "EasyIO-PCI", | |
260 | "EC/RA-PCI", | |
261 | }; | |
262 | ||
263 | /*****************************************************************************/ | |
264 | ||
1da177e4 LT |
265 | /* |
266 | * Define some string labels for arguments passed from the module | |
267 | * load line. These allow for easy board definitions, and easy | |
268 | * modification of the io, memory and irq resoucres. | |
269 | */ | |
270 | ||
271 | static char *board0[8]; | |
272 | static char *board1[8]; | |
273 | static char *board2[8]; | |
274 | static char *board3[8]; | |
275 | ||
276 | static char **stli_brdsp[] = { | |
277 | (char **) &board0, | |
278 | (char **) &board1, | |
279 | (char **) &board2, | |
280 | (char **) &board3 | |
281 | }; | |
282 | ||
283 | /* | |
284 | * Define a set of common board names, and types. This is used to | |
285 | * parse any module arguments. | |
286 | */ | |
287 | ||
1f8ec435 | 288 | static struct stlibrdtype { |
1da177e4 LT |
289 | char *name; |
290 | int type; | |
1f8ec435 | 291 | } stli_brdstr[] = { |
1da177e4 LT |
292 | { "stallion", BRD_STALLION }, |
293 | { "1", BRD_STALLION }, | |
294 | { "brumby", BRD_BRUMBY }, | |
295 | { "brumby4", BRD_BRUMBY }, | |
296 | { "brumby/4", BRD_BRUMBY }, | |
297 | { "brumby-4", BRD_BRUMBY }, | |
298 | { "brumby8", BRD_BRUMBY }, | |
299 | { "brumby/8", BRD_BRUMBY }, | |
300 | { "brumby-8", BRD_BRUMBY }, | |
301 | { "brumby16", BRD_BRUMBY }, | |
302 | { "brumby/16", BRD_BRUMBY }, | |
303 | { "brumby-16", BRD_BRUMBY }, | |
304 | { "2", BRD_BRUMBY }, | |
305 | { "onboard2", BRD_ONBOARD2 }, | |
306 | { "onboard-2", BRD_ONBOARD2 }, | |
307 | { "onboard/2", BRD_ONBOARD2 }, | |
308 | { "onboard-mc", BRD_ONBOARD2 }, | |
309 | { "onboard/mc", BRD_ONBOARD2 }, | |
310 | { "onboard-mca", BRD_ONBOARD2 }, | |
311 | { "onboard/mca", BRD_ONBOARD2 }, | |
312 | { "3", BRD_ONBOARD2 }, | |
313 | { "onboard", BRD_ONBOARD }, | |
314 | { "onboardat", BRD_ONBOARD }, | |
315 | { "4", BRD_ONBOARD }, | |
316 | { "onboarde", BRD_ONBOARDE }, | |
317 | { "onboard-e", BRD_ONBOARDE }, | |
318 | { "onboard/e", BRD_ONBOARDE }, | |
319 | { "onboard-ei", BRD_ONBOARDE }, | |
320 | { "onboard/ei", BRD_ONBOARDE }, | |
321 | { "7", BRD_ONBOARDE }, | |
322 | { "ecp", BRD_ECP }, | |
323 | { "ecpat", BRD_ECP }, | |
324 | { "ec8/64", BRD_ECP }, | |
325 | { "ec8/64-at", BRD_ECP }, | |
326 | { "ec8/64-isa", BRD_ECP }, | |
327 | { "23", BRD_ECP }, | |
328 | { "ecpe", BRD_ECPE }, | |
329 | { "ecpei", BRD_ECPE }, | |
330 | { "ec8/64-e", BRD_ECPE }, | |
331 | { "ec8/64-ei", BRD_ECPE }, | |
332 | { "24", BRD_ECPE }, | |
333 | { "ecpmc", BRD_ECPMC }, | |
334 | { "ec8/64-mc", BRD_ECPMC }, | |
335 | { "ec8/64-mca", BRD_ECPMC }, | |
336 | { "25", BRD_ECPMC }, | |
337 | { "ecppci", BRD_ECPPCI }, | |
338 | { "ec/ra", BRD_ECPPCI }, | |
339 | { "ec/ra-pc", BRD_ECPPCI }, | |
340 | { "ec/ra-pci", BRD_ECPPCI }, | |
341 | { "29", BRD_ECPPCI }, | |
342 | }; | |
343 | ||
344 | /* | |
345 | * Define the module agruments. | |
346 | */ | |
347 | MODULE_AUTHOR("Greg Ungerer"); | |
348 | MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); | |
349 | MODULE_LICENSE("GPL"); | |
350 | ||
351 | ||
8d3b33f6 | 352 | module_param_array(board0, charp, NULL, 0); |
1da177e4 | 353 | MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 354 | module_param_array(board1, charp, NULL, 0); |
1da177e4 | 355 | MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 356 | module_param_array(board2, charp, NULL, 0); |
1da177e4 | 357 | MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 358 | module_param_array(board3, charp, NULL, 0); |
1da177e4 LT |
359 | MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); |
360 | ||
a00f33f3 | 361 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
362 | /* |
363 | * Set up a default memory address table for EISA board probing. | |
364 | * The default addresses are all bellow 1Mbyte, which has to be the | |
365 | * case anyway. They should be safe, since we only read values from | |
366 | * them, and interrupts are disabled while we do it. If the higher | |
367 | * memory support is compiled in then we also try probing around | |
368 | * the 1Gb, 2Gb and 3Gb areas as well... | |
369 | */ | |
370 | static unsigned long stli_eisamemprobeaddrs[] = { | |
371 | 0xc0000, 0xd0000, 0xe0000, 0xf0000, | |
372 | 0x80000000, 0x80010000, 0x80020000, 0x80030000, | |
373 | 0x40000000, 0x40010000, 0x40020000, 0x40030000, | |
374 | 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, | |
375 | 0xff000000, 0xff010000, 0xff020000, 0xff030000, | |
376 | }; | |
377 | ||
fe971071 | 378 | static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs); |
a00f33f3 | 379 | #endif |
1da177e4 LT |
380 | |
381 | /* | |
382 | * Define the Stallion PCI vendor and device IDs. | |
383 | */ | |
1da177e4 LT |
384 | #ifndef PCI_DEVICE_ID_ECRA |
385 | #define PCI_DEVICE_ID_ECRA 0x0004 | |
386 | #endif | |
387 | ||
388 | static struct pci_device_id istallion_pci_tbl[] = { | |
4ac4360b | 389 | { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), }, |
1da177e4 LT |
390 | { 0 } |
391 | }; | |
392 | MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); | |
393 | ||
845bead4 | 394 | static struct pci_driver stli_pcidriver; |
1da177e4 LT |
395 | |
396 | /*****************************************************************************/ | |
397 | ||
398 | /* | |
399 | * Hardware configuration info for ECP boards. These defines apply | |
400 | * to the directly accessible io ports of the ECP. There is a set of | |
401 | * defines for each ECP board type, ISA, EISA, MCA and PCI. | |
402 | */ | |
403 | #define ECP_IOSIZE 4 | |
404 | ||
405 | #define ECP_MEMSIZE (128 * 1024) | |
406 | #define ECP_PCIMEMSIZE (256 * 1024) | |
407 | ||
408 | #define ECP_ATPAGESIZE (4 * 1024) | |
409 | #define ECP_MCPAGESIZE (4 * 1024) | |
410 | #define ECP_EIPAGESIZE (64 * 1024) | |
411 | #define ECP_PCIPAGESIZE (64 * 1024) | |
412 | ||
413 | #define STL_EISAID 0x8c4e | |
414 | ||
415 | /* | |
416 | * Important defines for the ISA class of ECP board. | |
417 | */ | |
418 | #define ECP_ATIREG 0 | |
419 | #define ECP_ATCONFR 1 | |
420 | #define ECP_ATMEMAR 2 | |
421 | #define ECP_ATMEMPR 3 | |
422 | #define ECP_ATSTOP 0x1 | |
423 | #define ECP_ATINTENAB 0x10 | |
424 | #define ECP_ATENABLE 0x20 | |
425 | #define ECP_ATDISABLE 0x00 | |
426 | #define ECP_ATADDRMASK 0x3f000 | |
427 | #define ECP_ATADDRSHFT 12 | |
428 | ||
429 | /* | |
430 | * Important defines for the EISA class of ECP board. | |
431 | */ | |
432 | #define ECP_EIIREG 0 | |
433 | #define ECP_EIMEMARL 1 | |
434 | #define ECP_EICONFR 2 | |
435 | #define ECP_EIMEMARH 3 | |
436 | #define ECP_EIENABLE 0x1 | |
437 | #define ECP_EIDISABLE 0x0 | |
438 | #define ECP_EISTOP 0x4 | |
439 | #define ECP_EIEDGE 0x00 | |
440 | #define ECP_EILEVEL 0x80 | |
441 | #define ECP_EIADDRMASKL 0x00ff0000 | |
442 | #define ECP_EIADDRSHFTL 16 | |
443 | #define ECP_EIADDRMASKH 0xff000000 | |
444 | #define ECP_EIADDRSHFTH 24 | |
445 | #define ECP_EIBRDENAB 0xc84 | |
446 | ||
447 | #define ECP_EISAID 0x4 | |
448 | ||
449 | /* | |
450 | * Important defines for the Micro-channel class of ECP board. | |
451 | * (It has a lot in common with the ISA boards.) | |
452 | */ | |
453 | #define ECP_MCIREG 0 | |
454 | #define ECP_MCCONFR 1 | |
455 | #define ECP_MCSTOP 0x20 | |
456 | #define ECP_MCENABLE 0x80 | |
457 | #define ECP_MCDISABLE 0x00 | |
458 | ||
459 | /* | |
460 | * Important defines for the PCI class of ECP board. | |
461 | * (It has a lot in common with the other ECP boards.) | |
462 | */ | |
463 | #define ECP_PCIIREG 0 | |
464 | #define ECP_PCICONFR 1 | |
465 | #define ECP_PCISTOP 0x01 | |
466 | ||
467 | /* | |
468 | * Hardware configuration info for ONboard and Brumby boards. These | |
469 | * defines apply to the directly accessible io ports of these boards. | |
470 | */ | |
471 | #define ONB_IOSIZE 16 | |
472 | #define ONB_MEMSIZE (64 * 1024) | |
473 | #define ONB_ATPAGESIZE (64 * 1024) | |
474 | #define ONB_MCPAGESIZE (64 * 1024) | |
475 | #define ONB_EIMEMSIZE (128 * 1024) | |
476 | #define ONB_EIPAGESIZE (64 * 1024) | |
477 | ||
478 | /* | |
479 | * Important defines for the ISA class of ONboard board. | |
480 | */ | |
481 | #define ONB_ATIREG 0 | |
482 | #define ONB_ATMEMAR 1 | |
483 | #define ONB_ATCONFR 2 | |
484 | #define ONB_ATSTOP 0x4 | |
485 | #define ONB_ATENABLE 0x01 | |
486 | #define ONB_ATDISABLE 0x00 | |
487 | #define ONB_ATADDRMASK 0xff0000 | |
488 | #define ONB_ATADDRSHFT 16 | |
489 | ||
490 | #define ONB_MEMENABLO 0 | |
491 | #define ONB_MEMENABHI 0x02 | |
492 | ||
493 | /* | |
494 | * Important defines for the EISA class of ONboard board. | |
495 | */ | |
496 | #define ONB_EIIREG 0 | |
497 | #define ONB_EIMEMARL 1 | |
498 | #define ONB_EICONFR 2 | |
499 | #define ONB_EIMEMARH 3 | |
500 | #define ONB_EIENABLE 0x1 | |
501 | #define ONB_EIDISABLE 0x0 | |
502 | #define ONB_EISTOP 0x4 | |
503 | #define ONB_EIEDGE 0x00 | |
504 | #define ONB_EILEVEL 0x80 | |
505 | #define ONB_EIADDRMASKL 0x00ff0000 | |
506 | #define ONB_EIADDRSHFTL 16 | |
507 | #define ONB_EIADDRMASKH 0xff000000 | |
508 | #define ONB_EIADDRSHFTH 24 | |
509 | #define ONB_EIBRDENAB 0xc84 | |
510 | ||
511 | #define ONB_EISAID 0x1 | |
512 | ||
513 | /* | |
514 | * Important defines for the Brumby boards. They are pretty simple, | |
515 | * there is not much that is programmably configurable. | |
516 | */ | |
517 | #define BBY_IOSIZE 16 | |
518 | #define BBY_MEMSIZE (64 * 1024) | |
519 | #define BBY_PAGESIZE (16 * 1024) | |
520 | ||
521 | #define BBY_ATIREG 0 | |
522 | #define BBY_ATCONFR 1 | |
523 | #define BBY_ATSTOP 0x4 | |
524 | ||
525 | /* | |
526 | * Important defines for the Stallion boards. They are pretty simple, | |
527 | * there is not much that is programmably configurable. | |
528 | */ | |
529 | #define STAL_IOSIZE 16 | |
530 | #define STAL_MEMSIZE (64 * 1024) | |
531 | #define STAL_PAGESIZE (64 * 1024) | |
532 | ||
533 | /* | |
534 | * Define the set of status register values for EasyConnection panels. | |
535 | * The signature will return with the status value for each panel. From | |
536 | * this we can determine what is attached to the board - before we have | |
537 | * actually down loaded any code to it. | |
538 | */ | |
539 | #define ECH_PNLSTATUS 2 | |
540 | #define ECH_PNL16PORT 0x20 | |
541 | #define ECH_PNLIDMASK 0x07 | |
542 | #define ECH_PNLXPID 0x40 | |
543 | #define ECH_PNLINTRPEND 0x80 | |
544 | ||
545 | /* | |
546 | * Define some macros to do things to the board. Even those these boards | |
547 | * are somewhat related there is often significantly different ways of | |
548 | * doing some operation on it (like enable, paging, reset, etc). So each | |
549 | * board class has a set of functions which do the commonly required | |
550 | * operations. The macros below basically just call these functions, | |
551 | * generally checking for a NULL function - which means that the board | |
552 | * needs nothing done to it to achieve this operation! | |
553 | */ | |
554 | #define EBRDINIT(brdp) \ | |
555 | if (brdp->init != NULL) \ | |
556 | (* brdp->init)(brdp) | |
557 | ||
558 | #define EBRDENABLE(brdp) \ | |
559 | if (brdp->enable != NULL) \ | |
560 | (* brdp->enable)(brdp); | |
561 | ||
562 | #define EBRDDISABLE(brdp) \ | |
563 | if (brdp->disable != NULL) \ | |
564 | (* brdp->disable)(brdp); | |
565 | ||
566 | #define EBRDINTR(brdp) \ | |
567 | if (brdp->intr != NULL) \ | |
568 | (* brdp->intr)(brdp); | |
569 | ||
570 | #define EBRDRESET(brdp) \ | |
571 | if (brdp->reset != NULL) \ | |
572 | (* brdp->reset)(brdp); | |
573 | ||
574 | #define EBRDGETMEMPTR(brdp,offset) \ | |
575 | (* brdp->getmemptr)(brdp, offset, __LINE__) | |
576 | ||
577 | /* | |
578 | * Define the maximal baud rate, and the default baud base for ports. | |
579 | */ | |
580 | #define STL_MAXBAUD 460800 | |
581 | #define STL_BAUDBASE 115200 | |
582 | #define STL_CLOSEDELAY (5 * HZ / 10) | |
583 | ||
584 | /*****************************************************************************/ | |
585 | ||
586 | /* | |
587 | * Define macros to extract a brd or port number from a minor number. | |
588 | */ | |
589 | #define MINOR2BRD(min) (((min) & 0xc0) >> 6) | |
590 | #define MINOR2PORT(min) ((min) & 0x3f) | |
591 | ||
1da177e4 LT |
592 | /*****************************************************************************/ |
593 | ||
1da177e4 LT |
594 | /* |
595 | * Prototype all functions in this driver! | |
596 | */ | |
597 | ||
1f8ec435 | 598 | static int stli_parsebrd(struct stlconf *confp, char **argp); |
1da177e4 LT |
599 | static int stli_open(struct tty_struct *tty, struct file *filp); |
600 | static void stli_close(struct tty_struct *tty, struct file *filp); | |
601 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); | |
42a77a1b | 602 | static int stli_putchar(struct tty_struct *tty, unsigned char ch); |
1da177e4 LT |
603 | static void stli_flushchars(struct tty_struct *tty); |
604 | static int stli_writeroom(struct tty_struct *tty); | |
605 | static int stli_charsinbuffer(struct tty_struct *tty); | |
606 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); | |
606d099c | 607 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old); |
1da177e4 LT |
608 | static void stli_throttle(struct tty_struct *tty); |
609 | static void stli_unthrottle(struct tty_struct *tty); | |
610 | static void stli_stop(struct tty_struct *tty); | |
611 | static void stli_start(struct tty_struct *tty); | |
612 | static void stli_flushbuffer(struct tty_struct *tty); | |
9e98966c | 613 | static int stli_breakctl(struct tty_struct *tty, int state); |
1da177e4 LT |
614 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); |
615 | static void stli_sendxchar(struct tty_struct *tty, char ch); | |
616 | static void stli_hangup(struct tty_struct *tty); | |
1da177e4 | 617 | |
1f8ec435 JS |
618 | static int stli_brdinit(struct stlibrd *brdp); |
619 | static int stli_startbrd(struct stlibrd *brdp); | |
1da177e4 LT |
620 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); |
621 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); | |
62687538 | 622 | static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg); |
1f8ec435 | 623 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp); |
1da177e4 | 624 | static void stli_poll(unsigned long arg); |
1f8ec435 | 625 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp); |
d18a750f | 626 | static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp); |
1f8ec435 JS |
627 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); |
628 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); | |
d18a750f | 629 | static int stli_setport(struct tty_struct *tty); |
1f8ec435 JS |
630 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); |
631 | static void stli_sendcmd(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_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp); | |
d18a750f | 634 | static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp); |
1da177e4 LT |
635 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); |
636 | static long stli_mktiocm(unsigned long sigvalue); | |
1f8ec435 JS |
637 | static void stli_read(struct stlibrd *brdp, struct stliport *portp); |
638 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp); | |
d18a750f | 639 | static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp); |
1da177e4 | 640 | static int stli_getbrdstats(combrd_t __user *bp); |
d18a750f AC |
641 | static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp); |
642 | static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp); | |
1f8ec435 JS |
643 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp); |
644 | static int stli_getportstruct(struct stliport __user *arg); | |
645 | static int stli_getbrdstruct(struct stlibrd __user *arg); | |
646 | static struct stlibrd *stli_allocbrd(void); | |
647 | ||
648 | static void stli_ecpinit(struct stlibrd *brdp); | |
649 | static void stli_ecpenable(struct stlibrd *brdp); | |
650 | static void stli_ecpdisable(struct stlibrd *brdp); | |
651 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
652 | static void stli_ecpreset(struct stlibrd *brdp); | |
653 | static void stli_ecpintr(struct stlibrd *brdp); | |
654 | static void stli_ecpeiinit(struct stlibrd *brdp); | |
655 | static void stli_ecpeienable(struct stlibrd *brdp); | |
656 | static void stli_ecpeidisable(struct stlibrd *brdp); | |
657 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
658 | static void stli_ecpeireset(struct stlibrd *brdp); | |
659 | static void stli_ecpmcenable(struct stlibrd *brdp); | |
660 | static void stli_ecpmcdisable(struct stlibrd *brdp); | |
661 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
662 | static void stli_ecpmcreset(struct stlibrd *brdp); | |
663 | static void stli_ecppciinit(struct stlibrd *brdp); | |
664 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
665 | static void stli_ecppcireset(struct stlibrd *brdp); | |
666 | ||
667 | static void stli_onbinit(struct stlibrd *brdp); | |
668 | static void stli_onbenable(struct stlibrd *brdp); | |
669 | static void stli_onbdisable(struct stlibrd *brdp); | |
670 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
671 | static void stli_onbreset(struct stlibrd *brdp); | |
672 | static void stli_onbeinit(struct stlibrd *brdp); | |
673 | static void stli_onbeenable(struct stlibrd *brdp); | |
674 | static void stli_onbedisable(struct stlibrd *brdp); | |
675 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
676 | static void stli_onbereset(struct stlibrd *brdp); | |
677 | static void stli_bbyinit(struct stlibrd *brdp); | |
678 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
679 | static void stli_bbyreset(struct stlibrd *brdp); | |
680 | static void stli_stalinit(struct stlibrd *brdp); | |
681 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
682 | static void stli_stalreset(struct stlibrd *brdp); | |
683 | ||
1328d737 | 684 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr); |
1f8ec435 JS |
685 | |
686 | static int stli_initecp(struct stlibrd *brdp); | |
687 | static int stli_initonb(struct stlibrd *brdp); | |
a00f33f3 | 688 | #if STLI_EISAPROBE != 0 |
1f8ec435 | 689 | static int stli_eisamemprobe(struct stlibrd *brdp); |
a00f33f3 | 690 | #endif |
1f8ec435 | 691 | static int stli_initports(struct stlibrd *brdp); |
1da177e4 | 692 | |
1da177e4 LT |
693 | /*****************************************************************************/ |
694 | ||
695 | /* | |
696 | * Define the driver info for a user level shared memory device. This | |
697 | * device will work sort of like the /dev/kmem device - except that it | |
698 | * will give access to the shared memory on the Stallion intelligent | |
699 | * board. This is also a very useful debugging tool. | |
700 | */ | |
62322d25 | 701 | static const struct file_operations stli_fsiomem = { |
1da177e4 LT |
702 | .owner = THIS_MODULE, |
703 | .read = stli_memread, | |
704 | .write = stli_memwrite, | |
62687538 | 705 | .unlocked_ioctl = stli_memioctl, |
6038f373 | 706 | .llseek = default_llseek, |
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; | |
8a1e803d | 819 | if (!test_bit(BST_STARTED, &brdp->state)) |
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 | */ | |
be1bc288 | 957 | wait_event_interruptible_tty(portp->raw_wait, |
1da177e4 LT |
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 | ||
be1bc288 | 992 | wait_event_interruptible_tty(portp->raw_wait, |
1da177e4 LT |
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) { | |
be1bc288 | 1023 | wait_event_interruptible_tty(portp->raw_wait, |
1da177e4 LT |
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; | |
be1bc288 | 1055 | wait_event_interruptible_tty(portp->raw_wait, |
1da177e4 LT |
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 | { |
be1bc288 AB |
1076 | /* |
1077 | * no need for wait_event_tty because clearing ST_CMDING cannot block | |
1078 | * on BTM | |
1079 | */ | |
1da177e4 LT |
1080 | wait_event_interruptible(portp->raw_wait, |
1081 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1082 | if (signal_pending(current)) |
1da177e4 | 1083 | return -ERESTARTSYS; |
1da177e4 LT |
1084 | |
1085 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
1086 | ||
1087 | wait_event_interruptible(portp->raw_wait, | |
1088 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1089 | if (signal_pending(current)) |
1da177e4 | 1090 | return -ERESTARTSYS; |
1da177e4 LT |
1091 | |
1092 | if (portp->rc != 0) | |
4ac4360b AC |
1093 | return -EIO; |
1094 | return 0; | |
1da177e4 LT |
1095 | } |
1096 | ||
1097 | /*****************************************************************************/ | |
1098 | ||
1099 | /* | |
1100 | * Send the termios settings for this port to the slave. This sleeps | |
1101 | * waiting for the command to complete - so must have user context. | |
1102 | */ | |
1103 | ||
d18a750f | 1104 | static int stli_setport(struct tty_struct *tty) |
1da177e4 | 1105 | { |
d18a750f | 1106 | struct stliport *portp = tty->driver_data; |
1f8ec435 | 1107 | struct stlibrd *brdp; |
4ac4360b | 1108 | asyport_t aport; |
1da177e4 | 1109 | |
4ac4360b AC |
1110 | if (portp == NULL) |
1111 | return -ENODEV; | |
1328d737 | 1112 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1113 | return -ENODEV; |
1da177e4 | 1114 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1115 | if (brdp == NULL) |
1116 | return -ENODEV; | |
1da177e4 | 1117 | |
d18a750f | 1118 | stli_mkasyport(tty, portp, &aport, tty->termios); |
1da177e4 LT |
1119 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); |
1120 | } | |
1121 | ||
1122 | /*****************************************************************************/ | |
1123 | ||
31f35939 AC |
1124 | static int stli_carrier_raised(struct tty_port *port) |
1125 | { | |
1126 | struct stliport *portp = container_of(port, struct stliport, port); | |
1127 | return (portp->sigs & TIOCM_CD) ? 1 : 0; | |
1128 | } | |
1129 | ||
fcc8ac18 | 1130 | static void stli_dtr_rts(struct tty_port *port, int on) |
1da177e4 | 1131 | { |
2a6eadbd AC |
1132 | struct stliport *portp = container_of(port, struct stliport, port); |
1133 | struct stlibrd *brdp = stli_brds[portp->brdnr]; | |
fcc8ac18 | 1134 | stli_mkasysigs(&portp->asig, on, on); |
2a6eadbd AC |
1135 | if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, |
1136 | sizeof(asysigs_t), 0) < 0) | |
fcc8ac18 | 1137 | printk(KERN_WARNING "istallion: dtr set failed.\n"); |
1da177e4 LT |
1138 | } |
1139 | ||
2a6eadbd | 1140 | |
1da177e4 LT |
1141 | /*****************************************************************************/ |
1142 | ||
1143 | /* | |
1144 | * Write routine. Take the data and put it in the shared memory ring | |
1145 | * queue. If port is not already sending chars then need to mark the | |
1146 | * service bits for this port. | |
1147 | */ | |
1148 | ||
1149 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1150 | { | |
4ac4360b AC |
1151 | cdkasy_t __iomem *ap; |
1152 | cdkhdr_t __iomem *hdrp; | |
1153 | unsigned char __iomem *bits; | |
1154 | unsigned char __iomem *shbuf; | |
1155 | unsigned char *chbuf; | |
1f8ec435 JS |
1156 | struct stliport *portp; |
1157 | struct stlibrd *brdp; | |
4ac4360b AC |
1158 | unsigned int len, stlen, head, tail, size; |
1159 | unsigned long flags; | |
1da177e4 | 1160 | |
1da177e4 LT |
1161 | if (tty == stli_txcooktty) |
1162 | stli_flushchars(tty); | |
1163 | portp = tty->driver_data; | |
4ac4360b AC |
1164 | if (portp == NULL) |
1165 | return 0; | |
1328d737 | 1166 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1167 | return 0; |
1da177e4 | 1168 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1169 | if (brdp == NULL) |
1170 | return 0; | |
1da177e4 LT |
1171 | chbuf = (unsigned char *) buf; |
1172 | ||
1173 | /* | |
1174 | * All data is now local, shove as much as possible into shared memory. | |
1175 | */ | |
4ac4360b | 1176 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1177 | EBRDENABLE(brdp); |
4ac4360b AC |
1178 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1179 | head = (unsigned int) readw(&ap->txq.head); | |
1180 | tail = (unsigned int) readw(&ap->txq.tail); | |
1181 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1182 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1183 | size = portp->txsize; |
1184 | if (head >= tail) { | |
1185 | len = size - (head - tail) - 1; | |
1186 | stlen = size - head; | |
1187 | } else { | |
1188 | len = tail - head - 1; | |
1189 | stlen = len; | |
1190 | } | |
1191 | ||
a3f8d9d5 | 1192 | len = min(len, (unsigned int)count); |
1da177e4 | 1193 | count = 0; |
4ac4360b | 1194 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1195 | |
1196 | while (len > 0) { | |
a3f8d9d5 | 1197 | stlen = min(len, stlen); |
4ac4360b | 1198 | memcpy_toio(shbuf + head, chbuf, stlen); |
1da177e4 LT |
1199 | chbuf += stlen; |
1200 | len -= stlen; | |
1201 | count += stlen; | |
1202 | head += stlen; | |
1203 | if (head >= size) { | |
1204 | head = 0; | |
1205 | stlen = tail; | |
1206 | } | |
1207 | } | |
1208 | ||
4ac4360b AC |
1209 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1210 | writew(head, &ap->txq.head); | |
1da177e4 | 1211 | if (test_bit(ST_TXBUSY, &portp->state)) { |
4ac4360b AC |
1212 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1213 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1214 | } |
4ac4360b AC |
1215 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1216 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1217 | portp->portidx; |
4ac4360b | 1218 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1219 | set_bit(ST_TXBUSY, &portp->state); |
1220 | EBRDDISABLE(brdp); | |
4ac4360b | 1221 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1222 | |
1223 | return(count); | |
1224 | } | |
1225 | ||
1226 | /*****************************************************************************/ | |
1227 | ||
1228 | /* | |
1229 | * Output a single character. We put it into a temporary local buffer | |
1230 | * (for speed) then write out that buffer when the flushchars routine | |
1231 | * is called. There is a safety catch here so that if some other port | |
1232 | * writes chars before the current buffer has been, then we write them | |
1233 | * first them do the new ports. | |
1234 | */ | |
1235 | ||
42a77a1b | 1236 | static int stli_putchar(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1237 | { |
1da177e4 | 1238 | if (tty != stli_txcooktty) { |
4ac4360b | 1239 | if (stli_txcooktty != NULL) |
1da177e4 LT |
1240 | stli_flushchars(stli_txcooktty); |
1241 | stli_txcooktty = tty; | |
1242 | } | |
1243 | ||
1244 | stli_txcookbuf[stli_txcooksize++] = ch; | |
42a77a1b | 1245 | return 0; |
1da177e4 LT |
1246 | } |
1247 | ||
1248 | /*****************************************************************************/ | |
1249 | ||
1250 | /* | |
1251 | * Transfer characters from the local TX cooking buffer to the board. | |
1252 | * We sort of ignore the tty that gets passed in here. We rely on the | |
1253 | * info stored with the TX cook buffer to tell us which port to flush | |
1254 | * the data on. In any case we clean out the TX cook buffer, for re-use | |
1255 | * by someone else. | |
1256 | */ | |
1257 | ||
1258 | static void stli_flushchars(struct tty_struct *tty) | |
1259 | { | |
4ac4360b AC |
1260 | cdkhdr_t __iomem *hdrp; |
1261 | unsigned char __iomem *bits; | |
1262 | cdkasy_t __iomem *ap; | |
1263 | struct tty_struct *cooktty; | |
1f8ec435 JS |
1264 | struct stliport *portp; |
1265 | struct stlibrd *brdp; | |
4ac4360b AC |
1266 | unsigned int len, stlen, head, tail, size, count, cooksize; |
1267 | unsigned char *buf; | |
1268 | unsigned char __iomem *shbuf; | |
1269 | unsigned long flags; | |
1da177e4 LT |
1270 | |
1271 | cooksize = stli_txcooksize; | |
1272 | cooktty = stli_txcooktty; | |
1273 | stli_txcooksize = 0; | |
1274 | stli_txcookrealsize = 0; | |
4ac4360b | 1275 | stli_txcooktty = NULL; |
1da177e4 | 1276 | |
4ac4360b | 1277 | if (cooktty == NULL) |
1da177e4 LT |
1278 | return; |
1279 | if (tty != cooktty) | |
1280 | tty = cooktty; | |
1281 | if (cooksize == 0) | |
1282 | return; | |
1283 | ||
1284 | portp = tty->driver_data; | |
4ac4360b | 1285 | if (portp == NULL) |
1da177e4 | 1286 | return; |
1328d737 | 1287 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1288 | return; |
1289 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1290 | if (brdp == NULL) |
1da177e4 LT |
1291 | return; |
1292 | ||
4ac4360b | 1293 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
1294 | EBRDENABLE(brdp); |
1295 | ||
4ac4360b AC |
1296 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1297 | head = (unsigned int) readw(&ap->txq.head); | |
1298 | tail = (unsigned int) readw(&ap->txq.tail); | |
1299 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1300 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1301 | size = portp->txsize; |
1302 | if (head >= tail) { | |
1303 | len = size - (head - tail) - 1; | |
1304 | stlen = size - head; | |
1305 | } else { | |
1306 | len = tail - head - 1; | |
1307 | stlen = len; | |
1308 | } | |
1309 | ||
a3f8d9d5 | 1310 | len = min(len, cooksize); |
1da177e4 | 1311 | count = 0; |
29756fa3 | 1312 | shbuf = EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1313 | buf = stli_txcookbuf; |
1314 | ||
1315 | while (len > 0) { | |
a3f8d9d5 | 1316 | stlen = min(len, stlen); |
4ac4360b | 1317 | memcpy_toio(shbuf + head, buf, stlen); |
1da177e4 LT |
1318 | buf += stlen; |
1319 | len -= stlen; | |
1320 | count += stlen; | |
1321 | head += stlen; | |
1322 | if (head >= size) { | |
1323 | head = 0; | |
1324 | stlen = tail; | |
1325 | } | |
1326 | } | |
1327 | ||
4ac4360b AC |
1328 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1329 | writew(head, &ap->txq.head); | |
1da177e4 LT |
1330 | |
1331 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
4ac4360b AC |
1332 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1333 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1334 | } |
4ac4360b AC |
1335 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1336 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1337 | portp->portidx; |
4ac4360b | 1338 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1339 | set_bit(ST_TXBUSY, &portp->state); |
1340 | ||
1341 | EBRDDISABLE(brdp); | |
4ac4360b | 1342 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1343 | } |
1344 | ||
1345 | /*****************************************************************************/ | |
1346 | ||
1347 | static int stli_writeroom(struct tty_struct *tty) | |
1348 | { | |
4ac4360b | 1349 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1350 | struct stliport *portp; |
1351 | struct stlibrd *brdp; | |
4ac4360b AC |
1352 | unsigned int head, tail, len; |
1353 | unsigned long flags; | |
1da177e4 | 1354 | |
1da177e4 LT |
1355 | if (tty == stli_txcooktty) { |
1356 | if (stli_txcookrealsize != 0) { | |
1357 | len = stli_txcookrealsize - stli_txcooksize; | |
4ac4360b | 1358 | return len; |
1da177e4 LT |
1359 | } |
1360 | } | |
1361 | ||
1362 | portp = tty->driver_data; | |
4ac4360b AC |
1363 | if (portp == NULL) |
1364 | return 0; | |
1328d737 | 1365 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1366 | return 0; |
1da177e4 | 1367 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1368 | if (brdp == NULL) |
1369 | return 0; | |
1da177e4 | 1370 | |
4ac4360b | 1371 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1372 | EBRDENABLE(brdp); |
4ac4360b AC |
1373 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1374 | head = (unsigned int) readw(&rp->head); | |
1375 | tail = (unsigned int) readw(&rp->tail); | |
1376 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1377 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1378 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); |
1379 | len--; | |
1380 | EBRDDISABLE(brdp); | |
4ac4360b | 1381 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1382 | |
1383 | if (tty == stli_txcooktty) { | |
1384 | stli_txcookrealsize = len; | |
1385 | len -= stli_txcooksize; | |
1386 | } | |
4ac4360b | 1387 | return len; |
1da177e4 LT |
1388 | } |
1389 | ||
1390 | /*****************************************************************************/ | |
1391 | ||
1392 | /* | |
1393 | * Return the number of characters in the transmit buffer. Normally we | |
1394 | * will return the number of chars in the shared memory ring queue. | |
1395 | * We need to kludge around the case where the shared memory buffer is | |
1396 | * empty but not all characters have drained yet, for this case just | |
1397 | * return that there is 1 character in the buffer! | |
1398 | */ | |
1399 | ||
1400 | static int stli_charsinbuffer(struct tty_struct *tty) | |
1401 | { | |
4ac4360b | 1402 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1403 | struct stliport *portp; |
1404 | struct stlibrd *brdp; | |
4ac4360b AC |
1405 | unsigned int head, tail, len; |
1406 | unsigned long flags; | |
1da177e4 | 1407 | |
1da177e4 LT |
1408 | if (tty == stli_txcooktty) |
1409 | stli_flushchars(tty); | |
1410 | portp = tty->driver_data; | |
4ac4360b AC |
1411 | if (portp == NULL) |
1412 | return 0; | |
1328d737 | 1413 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1414 | return 0; |
1da177e4 | 1415 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1416 | if (brdp == NULL) |
1417 | return 0; | |
1da177e4 | 1418 | |
4ac4360b | 1419 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1420 | EBRDENABLE(brdp); |
4ac4360b AC |
1421 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1422 | head = (unsigned int) readw(&rp->head); | |
1423 | tail = (unsigned int) readw(&rp->tail); | |
1424 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1425 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1426 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); |
1427 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) | |
1428 | len = 1; | |
1429 | EBRDDISABLE(brdp); | |
4ac4360b | 1430 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 | 1431 | |
4ac4360b | 1432 | return len; |
1da177e4 LT |
1433 | } |
1434 | ||
1435 | /*****************************************************************************/ | |
1436 | ||
1437 | /* | |
1438 | * Generate the serial struct info. | |
1439 | */ | |
1440 | ||
1f8ec435 | 1441 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp) |
1da177e4 | 1442 | { |
4ac4360b | 1443 | struct serial_struct sio; |
1f8ec435 | 1444 | struct stlibrd *brdp; |
1da177e4 LT |
1445 | |
1446 | memset(&sio, 0, sizeof(struct serial_struct)); | |
1447 | sio.type = PORT_UNKNOWN; | |
1448 | sio.line = portp->portnr; | |
1449 | sio.irq = 0; | |
b02f5ad6 | 1450 | sio.flags = portp->port.flags; |
1da177e4 | 1451 | sio.baud_base = portp->baud_base; |
a6614999 | 1452 | sio.close_delay = portp->port.close_delay; |
1da177e4 LT |
1453 | sio.closing_wait = portp->closing_wait; |
1454 | sio.custom_divisor = portp->custom_divisor; | |
1455 | sio.xmit_fifo_size = 0; | |
1456 | sio.hub6 = 0; | |
1457 | ||
1458 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1459 | if (brdp != NULL) |
1da177e4 LT |
1460 | sio.port = brdp->iobase; |
1461 | ||
1462 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? | |
1463 | -EFAULT : 0; | |
1464 | } | |
1465 | ||
1466 | /*****************************************************************************/ | |
1467 | ||
1468 | /* | |
1469 | * Set port according to the serial struct info. | |
1470 | * At this point we do not do any auto-configure stuff, so we will | |
1471 | * just quietly ignore any requests to change irq, etc. | |
1472 | */ | |
1473 | ||
d18a750f | 1474 | static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp) |
1da177e4 | 1475 | { |
4ac4360b AC |
1476 | struct serial_struct sio; |
1477 | int rc; | |
d18a750f | 1478 | struct stliport *portp = tty->driver_data; |
1da177e4 LT |
1479 | |
1480 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) | |
1481 | return -EFAULT; | |
1482 | if (!capable(CAP_SYS_ADMIN)) { | |
1483 | if ((sio.baud_base != portp->baud_base) || | |
a6614999 | 1484 | (sio.close_delay != portp->port.close_delay) || |
1da177e4 | 1485 | ((sio.flags & ~ASYNC_USR_MASK) != |
b02f5ad6 | 1486 | (portp->port.flags & ~ASYNC_USR_MASK))) |
4ac4360b | 1487 | return -EPERM; |
1da177e4 LT |
1488 | } |
1489 | ||
b02f5ad6 | 1490 | portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) | |
1da177e4 LT |
1491 | (sio.flags & ASYNC_USR_MASK); |
1492 | portp->baud_base = sio.baud_base; | |
a6614999 | 1493 | portp->port.close_delay = sio.close_delay; |
1da177e4 LT |
1494 | portp->closing_wait = sio.closing_wait; |
1495 | portp->custom_divisor = sio.custom_divisor; | |
1496 | ||
d18a750f | 1497 | if ((rc = stli_setport(tty)) < 0) |
4ac4360b AC |
1498 | return rc; |
1499 | return 0; | |
1da177e4 LT |
1500 | } |
1501 | ||
1502 | /*****************************************************************************/ | |
1503 | ||
1504 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) | |
1505 | { | |
1f8ec435 JS |
1506 | struct stliport *portp = tty->driver_data; |
1507 | struct stlibrd *brdp; | |
1da177e4 LT |
1508 | int rc; |
1509 | ||
4ac4360b AC |
1510 | if (portp == NULL) |
1511 | return -ENODEV; | |
1328d737 | 1512 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1513 | return 0; |
1da177e4 | 1514 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1515 | if (brdp == NULL) |
1516 | return 0; | |
1da177e4 | 1517 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1518 | return -EIO; |
1da177e4 LT |
1519 | |
1520 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, | |
1521 | &portp->asig, sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1522 | return rc; |
1da177e4 LT |
1523 | |
1524 | return stli_mktiocm(portp->asig.sigvalue); | |
1525 | } | |
1526 | ||
1527 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, | |
1528 | unsigned int set, unsigned int clear) | |
1529 | { | |
1f8ec435 JS |
1530 | struct stliport *portp = tty->driver_data; |
1531 | struct stlibrd *brdp; | |
1da177e4 LT |
1532 | int rts = -1, dtr = -1; |
1533 | ||
4ac4360b AC |
1534 | if (portp == NULL) |
1535 | return -ENODEV; | |
1328d737 | 1536 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1537 | return 0; |
1da177e4 | 1538 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1539 | if (brdp == NULL) |
1540 | return 0; | |
1da177e4 | 1541 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1542 | return -EIO; |
1da177e4 LT |
1543 | |
1544 | if (set & TIOCM_RTS) | |
1545 | rts = 1; | |
1546 | if (set & TIOCM_DTR) | |
1547 | dtr = 1; | |
1548 | if (clear & TIOCM_RTS) | |
1549 | rts = 0; | |
1550 | if (clear & TIOCM_DTR) | |
1551 | dtr = 0; | |
1552 | ||
1553 | stli_mkasysigs(&portp->asig, dtr, rts); | |
1554 | ||
1555 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1556 | sizeof(asysigs_t), 0); | |
1557 | } | |
1558 | ||
1559 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1560 | { | |
1f8ec435 JS |
1561 | struct stliport *portp; |
1562 | struct stlibrd *brdp; | |
4ac4360b | 1563 | int rc; |
1da177e4 LT |
1564 | void __user *argp = (void __user *)arg; |
1565 | ||
1da177e4 | 1566 | portp = tty->driver_data; |
4ac4360b AC |
1567 | if (portp == NULL) |
1568 | return -ENODEV; | |
1328d737 | 1569 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1570 | return 0; |
1da177e4 | 1571 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1572 | if (brdp == NULL) |
1573 | return 0; | |
1da177e4 LT |
1574 | |
1575 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && | |
1576 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { | |
1577 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
4ac4360b | 1578 | return -EIO; |
1da177e4 LT |
1579 | } |
1580 | ||
1581 | rc = 0; | |
1582 | ||
1583 | switch (cmd) { | |
1da177e4 LT |
1584 | case TIOCGSERIAL: |
1585 | rc = stli_getserial(portp, argp); | |
1586 | break; | |
1587 | case TIOCSSERIAL: | |
d18a750f | 1588 | rc = stli_setserial(tty, argp); |
1da177e4 LT |
1589 | break; |
1590 | case STL_GETPFLAG: | |
1591 | rc = put_user(portp->pflag, (unsigned __user *)argp); | |
1592 | break; | |
1593 | case STL_SETPFLAG: | |
1594 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) | |
d18a750f | 1595 | stli_setport(tty); |
1da177e4 LT |
1596 | break; |
1597 | case COM_GETPORTSTATS: | |
d18a750f | 1598 | rc = stli_getportstats(tty, portp, argp); |
1da177e4 LT |
1599 | break; |
1600 | case COM_CLRPORTSTATS: | |
1601 | rc = stli_clrportstats(portp, argp); | |
1602 | break; | |
1603 | case TIOCSERCONFIG: | |
1604 | case TIOCSERGWILD: | |
1605 | case TIOCSERSWILD: | |
1606 | case TIOCSERGETLSR: | |
1607 | case TIOCSERGSTRUCT: | |
1608 | case TIOCSERGETMULTI: | |
1609 | case TIOCSERSETMULTI: | |
1610 | default: | |
1611 | rc = -ENOIOCTLCMD; | |
1612 | break; | |
1613 | } | |
1614 | ||
4ac4360b | 1615 | return rc; |
1da177e4 LT |
1616 | } |
1617 | ||
1618 | /*****************************************************************************/ | |
1619 | ||
1620 | /* | |
1621 | * This routine assumes that we have user context and can sleep. | |
1622 | * Looks like it is true for the current ttys implementation..!! | |
1623 | */ | |
1624 | ||
606d099c | 1625 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old) |
1da177e4 | 1626 | { |
1f8ec435 JS |
1627 | struct stliport *portp; |
1628 | struct stlibrd *brdp; | |
606d099c | 1629 | struct ktermios *tiosp; |
4ac4360b | 1630 | asyport_t aport; |
1da177e4 | 1631 | |
1da177e4 | 1632 | portp = tty->driver_data; |
4ac4360b | 1633 | if (portp == NULL) |
1da177e4 | 1634 | return; |
1328d737 | 1635 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1636 | return; |
1637 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1638 | if (brdp == NULL) |
1da177e4 LT |
1639 | return; |
1640 | ||
1641 | tiosp = tty->termios; | |
1da177e4 | 1642 | |
d18a750f | 1643 | stli_mkasyport(tty, portp, &aport, tiosp); |
1da177e4 LT |
1644 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); |
1645 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); | |
1646 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1647 | sizeof(asysigs_t), 0); | |
1648 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) | |
1649 | tty->hw_stopped = 0; | |
1650 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) | |
b02f5ad6 | 1651 | wake_up_interruptible(&portp->port.open_wait); |
1da177e4 LT |
1652 | } |
1653 | ||
1654 | /*****************************************************************************/ | |
1655 | ||
1656 | /* | |
1657 | * Attempt to flow control who ever is sending us data. We won't really | |
1658 | * do any flow control action here. We can't directly, and even if we | |
1659 | * wanted to we would have to send a command to the slave. The slave | |
1660 | * knows how to flow control, and will do so when its buffers reach its | |
1661 | * internal high water marks. So what we will do is set a local state | |
1662 | * bit that will stop us sending any RX data up from the poll routine | |
1663 | * (which is the place where RX data from the slave is handled). | |
1664 | */ | |
1665 | ||
1666 | static void stli_throttle(struct tty_struct *tty) | |
1667 | { | |
1f8ec435 | 1668 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1669 | if (portp == NULL) |
1da177e4 | 1670 | return; |
1da177e4 LT |
1671 | set_bit(ST_RXSTOP, &portp->state); |
1672 | } | |
1673 | ||
1674 | /*****************************************************************************/ | |
1675 | ||
1676 | /* | |
1677 | * Unflow control the device sending us data... That means that all | |
1678 | * we have to do is clear the RXSTOP state bit. The next poll call | |
1679 | * will then be able to pass the RX data back up. | |
1680 | */ | |
1681 | ||
1682 | static void stli_unthrottle(struct tty_struct *tty) | |
1683 | { | |
1f8ec435 | 1684 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1685 | if (portp == NULL) |
1da177e4 | 1686 | return; |
1da177e4 LT |
1687 | clear_bit(ST_RXSTOP, &portp->state); |
1688 | } | |
1689 | ||
1690 | /*****************************************************************************/ | |
1691 | ||
1692 | /* | |
4ac4360b | 1693 | * Stop the transmitter. |
1da177e4 LT |
1694 | */ |
1695 | ||
1696 | static void stli_stop(struct tty_struct *tty) | |
1697 | { | |
1da177e4 LT |
1698 | } |
1699 | ||
1700 | /*****************************************************************************/ | |
1701 | ||
1702 | /* | |
4ac4360b | 1703 | * Start the transmitter again. |
1da177e4 LT |
1704 | */ |
1705 | ||
1706 | static void stli_start(struct tty_struct *tty) | |
1707 | { | |
1da177e4 LT |
1708 | } |
1709 | ||
1710 | /*****************************************************************************/ | |
1711 | ||
338818fd | 1712 | |
1da177e4 LT |
1713 | /* |
1714 | * Hangup this port. This is pretty much like closing the port, only | |
1715 | * a little more brutal. No waiting for data to drain. Shutdown the | |
1716 | * port and maybe drop signals. This is rather tricky really. We want | |
1717 | * to close the port as well. | |
1718 | */ | |
1719 | ||
1720 | static void stli_hangup(struct tty_struct *tty) | |
1721 | { | |
338818fd AC |
1722 | struct stliport *portp = tty->driver_data; |
1723 | tty_port_hangup(&portp->port); | |
1da177e4 LT |
1724 | } |
1725 | ||
1726 | /*****************************************************************************/ | |
1727 | ||
1728 | /* | |
1729 | * Flush characters from the lower buffer. We may not have user context | |
1730 | * so we cannot sleep waiting for it to complete. Also we need to check | |
1731 | * if there is chars for this port in the TX cook buffer, and flush them | |
1732 | * as well. | |
1733 | */ | |
1734 | ||
1735 | static void stli_flushbuffer(struct tty_struct *tty) | |
1736 | { | |
1f8ec435 JS |
1737 | struct stliport *portp; |
1738 | struct stlibrd *brdp; | |
4ac4360b | 1739 | unsigned long ftype, flags; |
1da177e4 | 1740 | |
1da177e4 | 1741 | portp = tty->driver_data; |
4ac4360b | 1742 | if (portp == NULL) |
1da177e4 | 1743 | return; |
1328d737 | 1744 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1745 | return; |
1746 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1747 | if (brdp == NULL) |
1da177e4 LT |
1748 | return; |
1749 | ||
4ac4360b | 1750 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1751 | if (tty == stli_txcooktty) { |
4ac4360b | 1752 | stli_txcooktty = NULL; |
1da177e4 LT |
1753 | stli_txcooksize = 0; |
1754 | stli_txcookrealsize = 0; | |
1755 | } | |
1756 | if (test_bit(ST_CMDING, &portp->state)) { | |
1757 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1758 | } else { | |
1759 | ftype = FLUSHTX; | |
1760 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { | |
1761 | ftype |= FLUSHRX; | |
1762 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
1763 | } | |
4ac4360b | 1764 | __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); |
1da177e4 | 1765 | } |
4ac4360b AC |
1766 | spin_unlock_irqrestore(&brd_lock, flags); |
1767 | tty_wakeup(tty); | |
1da177e4 LT |
1768 | } |
1769 | ||
1770 | /*****************************************************************************/ | |
1771 | ||
9e98966c | 1772 | static int stli_breakctl(struct tty_struct *tty, int state) |
1da177e4 | 1773 | { |
1f8ec435 JS |
1774 | struct stlibrd *brdp; |
1775 | struct stliport *portp; | |
1da177e4 | 1776 | long arg; |
1da177e4 | 1777 | |
1da177e4 | 1778 | portp = tty->driver_data; |
4ac4360b | 1779 | if (portp == NULL) |
9e98966c | 1780 | return -EINVAL; |
1328d737 | 1781 | if (portp->brdnr >= stli_nrbrds) |
9e98966c | 1782 | return -EINVAL; |
1da177e4 | 1783 | brdp = stli_brds[portp->brdnr]; |
4ac4360b | 1784 | if (brdp == NULL) |
9e98966c | 1785 | return -EINVAL; |
1da177e4 | 1786 | |
1da177e4 LT |
1787 | arg = (state == -1) ? BREAKON : BREAKOFF; |
1788 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); | |
9e98966c | 1789 | return 0; |
1da177e4 LT |
1790 | } |
1791 | ||
1792 | /*****************************************************************************/ | |
1793 | ||
1794 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) | |
1795 | { | |
1f8ec435 | 1796 | struct stliport *portp; |
4ac4360b | 1797 | unsigned long tend; |
1da177e4 | 1798 | |
1da177e4 | 1799 | portp = tty->driver_data; |
4ac4360b | 1800 | if (portp == NULL) |
1da177e4 LT |
1801 | return; |
1802 | ||
1803 | if (timeout == 0) | |
1804 | timeout = HZ; | |
1805 | tend = jiffies + timeout; | |
1806 | ||
1807 | while (test_bit(ST_TXBUSY, &portp->state)) { | |
1808 | if (signal_pending(current)) | |
1809 | break; | |
1810 | msleep_interruptible(20); | |
1811 | if (time_after_eq(jiffies, tend)) | |
1812 | break; | |
1813 | } | |
1814 | } | |
1815 | ||
1816 | /*****************************************************************************/ | |
1817 | ||
1818 | static void stli_sendxchar(struct tty_struct *tty, char ch) | |
1819 | { | |
1f8ec435 JS |
1820 | struct stlibrd *brdp; |
1821 | struct stliport *portp; | |
1da177e4 LT |
1822 | asyctrl_t actrl; |
1823 | ||
1da177e4 | 1824 | portp = tty->driver_data; |
4ac4360b | 1825 | if (portp == NULL) |
1da177e4 | 1826 | return; |
1328d737 | 1827 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1828 | return; |
1829 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1830 | if (brdp == NULL) |
1da177e4 LT |
1831 | return; |
1832 | ||
1833 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
1834 | if (ch == STOP_CHAR(tty)) { | |
1835 | actrl.rxctrl = CT_STOPFLOW; | |
1836 | } else if (ch == START_CHAR(tty)) { | |
1837 | actrl.rxctrl = CT_STARTFLOW; | |
1838 | } else { | |
1839 | actrl.txctrl = CT_SENDCHR; | |
1840 | actrl.tximdch = ch; | |
1841 | } | |
1da177e4 LT |
1842 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
1843 | } | |
1844 | ||
5bd6de7d | 1845 | static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr) |
1da177e4 | 1846 | { |
5bd6de7d AD |
1847 | char *uart; |
1848 | int rc; | |
1da177e4 | 1849 | |
d18a750f | 1850 | rc = stli_portcmdstats(NULL, portp); |
1da177e4 LT |
1851 | |
1852 | uart = "UNKNOWN"; | |
8a1e803d | 1853 | if (test_bit(BST_STARTED, &brdp->state)) { |
1da177e4 | 1854 | switch (stli_comstats.hwid) { |
4ac4360b AC |
1855 | case 0: uart = "2681"; break; |
1856 | case 1: uart = "SC26198"; break; | |
1857 | default:uart = "CD1400"; break; | |
1da177e4 LT |
1858 | } |
1859 | } | |
5bd6de7d | 1860 | seq_printf(m, "%d: uart:%s ", portnr, uart); |
1da177e4 | 1861 | |
8a1e803d | 1862 | if (test_bit(BST_STARTED, &brdp->state) && rc >= 0) { |
5bd6de7d AD |
1863 | char sep; |
1864 | ||
1865 | seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal, | |
1da177e4 LT |
1866 | (int) stli_comstats.rxtotal); |
1867 | ||
1868 | if (stli_comstats.rxframing) | |
5bd6de7d | 1869 | seq_printf(m, " fe:%d", |
1da177e4 LT |
1870 | (int) stli_comstats.rxframing); |
1871 | if (stli_comstats.rxparity) | |
5bd6de7d | 1872 | seq_printf(m, " pe:%d", |
1da177e4 LT |
1873 | (int) stli_comstats.rxparity); |
1874 | if (stli_comstats.rxbreaks) | |
5bd6de7d | 1875 | seq_printf(m, " brk:%d", |
1da177e4 LT |
1876 | (int) stli_comstats.rxbreaks); |
1877 | if (stli_comstats.rxoverrun) | |
5bd6de7d | 1878 | seq_printf(m, " oe:%d", |
1da177e4 LT |
1879 | (int) stli_comstats.rxoverrun); |
1880 | ||
5bd6de7d AD |
1881 | sep = ' '; |
1882 | if (stli_comstats.signals & TIOCM_RTS) { | |
1883 | seq_printf(m, "%c%s", sep, "RTS"); | |
1884 | sep = '|'; | |
1885 | } | |
1886 | if (stli_comstats.signals & TIOCM_CTS) { | |
1887 | seq_printf(m, "%c%s", sep, "CTS"); | |
1888 | sep = '|'; | |
1889 | } | |
1890 | if (stli_comstats.signals & TIOCM_DTR) { | |
1891 | seq_printf(m, "%c%s", sep, "DTR"); | |
1892 | sep = '|'; | |
1893 | } | |
1894 | if (stli_comstats.signals & TIOCM_CD) { | |
1895 | seq_printf(m, "%c%s", sep, "DCD"); | |
1896 | sep = '|'; | |
1897 | } | |
1898 | if (stli_comstats.signals & TIOCM_DSR) { | |
1899 | seq_printf(m, "%c%s", sep, "DSR"); | |
1900 | sep = '|'; | |
1901 | } | |
1da177e4 | 1902 | } |
5bd6de7d | 1903 | seq_putc(m, '\n'); |
1da177e4 LT |
1904 | } |
1905 | ||
1906 | /*****************************************************************************/ | |
1907 | ||
1908 | /* | |
1909 | * Port info, read from the /proc file system. | |
1910 | */ | |
1911 | ||
5bd6de7d | 1912 | static int stli_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1913 | { |
1f8ec435 JS |
1914 | struct stlibrd *brdp; |
1915 | struct stliport *portp; | |
1328d737 | 1916 | unsigned int brdnr, portnr, totalport; |
1da177e4 | 1917 | |
1da177e4 | 1918 | totalport = 0; |
5bd6de7d AD |
1919 | |
1920 | seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion); | |
1da177e4 LT |
1921 | |
1922 | /* | |
1923 | * We scan through for each board, panel and port. The offset is | |
1924 | * calculated on the fly, and irrelevant ports are skipped. | |
1925 | */ | |
1926 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
1927 | brdp = stli_brds[brdnr]; | |
4ac4360b | 1928 | if (brdp == NULL) |
1da177e4 LT |
1929 | continue; |
1930 | if (brdp->state == 0) | |
1931 | continue; | |
1932 | ||
1da177e4 LT |
1933 | totalport = brdnr * STL_MAXPORTS; |
1934 | for (portnr = 0; (portnr < brdp->nrports); portnr++, | |
1935 | totalport++) { | |
1936 | portp = brdp->ports[portnr]; | |
4ac4360b | 1937 | if (portp == NULL) |
1da177e4 | 1938 | continue; |
5bd6de7d | 1939 | stli_portinfo(m, brdp, portp, totalport); |
1da177e4 LT |
1940 | } |
1941 | } | |
5bd6de7d AD |
1942 | return 0; |
1943 | } | |
1da177e4 | 1944 | |
5bd6de7d AD |
1945 | static int stli_proc_open(struct inode *inode, struct file *file) |
1946 | { | |
1947 | return single_open(file, stli_proc_show, NULL); | |
1da177e4 LT |
1948 | } |
1949 | ||
5bd6de7d AD |
1950 | static const struct file_operations stli_proc_fops = { |
1951 | .owner = THIS_MODULE, | |
1952 | .open = stli_proc_open, | |
1953 | .read = seq_read, | |
1954 | .llseek = seq_lseek, | |
1955 | .release = single_release, | |
1956 | }; | |
1957 | ||
1da177e4 LT |
1958 | /*****************************************************************************/ |
1959 | ||
1960 | /* | |
1961 | * Generic send command routine. This will send a message to the slave, | |
1962 | * of the specified type with the specified argument. Must be very | |
1963 | * careful of data that will be copied out from shared memory - | |
1964 | * containing command results. The command completion is all done from | |
1965 | * a poll routine that does not have user context. Therefore you cannot | |
1966 | * copy back directly into user space, or to the kernel stack of a | |
1967 | * process. This routine does not sleep, so can be called from anywhere. | |
4ac4360b AC |
1968 | * |
1969 | * The caller must hold the brd_lock (see also stli_sendcmd the usual | |
1970 | * entry point) | |
1da177e4 LT |
1971 | */ |
1972 | ||
1f8ec435 | 1973 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 1974 | { |
4ac4360b AC |
1975 | cdkhdr_t __iomem *hdrp; |
1976 | cdkctrl_t __iomem *cp; | |
1977 | unsigned char __iomem *bits; | |
1da177e4 LT |
1978 | |
1979 | if (test_bit(ST_CMDING, &portp->state)) { | |
a6614999 | 1980 | printk(KERN_ERR "istallion: command already busy, cmd=%x!\n", |
1da177e4 | 1981 | (int) cmd); |
1da177e4 LT |
1982 | return; |
1983 | } | |
1984 | ||
1985 | EBRDENABLE(brdp); | |
4ac4360b | 1986 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1da177e4 | 1987 | if (size > 0) { |
4ac4360b | 1988 | memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); |
1da177e4 LT |
1989 | if (copyback) { |
1990 | portp->argp = arg; | |
1991 | portp->argsize = size; | |
1992 | } | |
1993 | } | |
4ac4360b AC |
1994 | writel(0, &cp->status); |
1995 | writel(cmd, &cp->cmd); | |
1996 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1997 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1998 | portp->portidx; |
4ac4360b | 1999 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
2000 | set_bit(ST_CMDING, &portp->state); |
2001 | EBRDDISABLE(brdp); | |
4ac4360b AC |
2002 | } |
2003 | ||
1f8ec435 | 2004 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
4ac4360b AC |
2005 | { |
2006 | unsigned long flags; | |
2007 | ||
2008 | spin_lock_irqsave(&brd_lock, flags); | |
2009 | __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
2010 | spin_unlock_irqrestore(&brd_lock, flags); | |
1da177e4 LT |
2011 | } |
2012 | ||
2013 | /*****************************************************************************/ | |
2014 | ||
2015 | /* | |
2016 | * Read data from shared memory. This assumes that the shared memory | |
2017 | * is enabled and that interrupts are off. Basically we just empty out | |
2018 | * the shared memory buffer into the tty buffer. Must be careful to | |
2019 | * handle the case where we fill up the tty buffer, but still have | |
2020 | * more chars to unload. | |
2021 | */ | |
2022 | ||
1f8ec435 | 2023 | static void stli_read(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2024 | { |
4ac4360b AC |
2025 | cdkasyrq_t __iomem *rp; |
2026 | char __iomem *shbuf; | |
1da177e4 | 2027 | struct tty_struct *tty; |
4ac4360b AC |
2028 | unsigned int head, tail, size; |
2029 | unsigned int len, stlen; | |
1da177e4 LT |
2030 | |
2031 | if (test_bit(ST_RXSTOP, &portp->state)) | |
2032 | return; | |
d18a750f | 2033 | tty = tty_port_tty_get(&portp->port); |
4ac4360b | 2034 | if (tty == NULL) |
1da177e4 LT |
2035 | return; |
2036 | ||
4ac4360b AC |
2037 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2038 | head = (unsigned int) readw(&rp->head); | |
2039 | if (head != ((unsigned int) readw(&rp->head))) | |
2040 | head = (unsigned int) readw(&rp->head); | |
2041 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
2042 | size = portp->rxsize; |
2043 | if (head >= tail) { | |
2044 | len = head - tail; | |
2045 | stlen = len; | |
2046 | } else { | |
2047 | len = size - (tail - head); | |
2048 | stlen = size - tail; | |
2049 | } | |
2050 | ||
33f0f88f | 2051 | len = tty_buffer_request_room(tty, len); |
4ac4360b AC |
2052 | |
2053 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); | |
1da177e4 LT |
2054 | |
2055 | while (len > 0) { | |
4ac4360b AC |
2056 | unsigned char *cptr; |
2057 | ||
a3f8d9d5 | 2058 | stlen = min(len, stlen); |
4ac4360b AC |
2059 | tty_prepare_flip_string(tty, &cptr, stlen); |
2060 | memcpy_fromio(cptr, shbuf + tail, stlen); | |
1da177e4 LT |
2061 | len -= stlen; |
2062 | tail += stlen; | |
2063 | if (tail >= size) { | |
2064 | tail = 0; | |
2065 | stlen = head; | |
2066 | } | |
2067 | } | |
4ac4360b AC |
2068 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2069 | writew(tail, &rp->tail); | |
1da177e4 LT |
2070 | |
2071 | if (head != tail) | |
2072 | set_bit(ST_RXING, &portp->state); | |
2073 | ||
2074 | tty_schedule_flip(tty); | |
d18a750f | 2075 | tty_kref_put(tty); |
1da177e4 LT |
2076 | } |
2077 | ||
2078 | /*****************************************************************************/ | |
2079 | ||
2080 | /* | |
2081 | * Set up and carry out any delayed commands. There is only a small set | |
2082 | * of slave commands that can be done "off-level". So it is not too | |
2083 | * difficult to deal with them here. | |
2084 | */ | |
2085 | ||
1f8ec435 | 2086 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp) |
1da177e4 | 2087 | { |
4ac4360b | 2088 | int cmd; |
1da177e4 LT |
2089 | |
2090 | if (test_bit(ST_DOSIGS, &portp->state)) { | |
2091 | if (test_bit(ST_DOFLUSHTX, &portp->state) && | |
2092 | test_bit(ST_DOFLUSHRX, &portp->state)) | |
2093 | cmd = A_SETSIGNALSF; | |
2094 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) | |
2095 | cmd = A_SETSIGNALSFTX; | |
2096 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) | |
2097 | cmd = A_SETSIGNALSFRX; | |
2098 | else | |
2099 | cmd = A_SETSIGNALS; | |
2100 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2101 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2102 | clear_bit(ST_DOSIGS, &portp->state); | |
4ac4360b | 2103 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, |
1da177e4 | 2104 | sizeof(asysigs_t)); |
4ac4360b AC |
2105 | writel(0, &cp->status); |
2106 | writel(cmd, &cp->cmd); | |
1da177e4 LT |
2107 | set_bit(ST_CMDING, &portp->state); |
2108 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || | |
2109 | test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2110 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); | |
2111 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); | |
2112 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2113 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
4ac4360b AC |
2114 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); |
2115 | writel(0, &cp->status); | |
2116 | writel(A_FLUSH, &cp->cmd); | |
1da177e4 LT |
2117 | set_bit(ST_CMDING, &portp->state); |
2118 | } | |
2119 | } | |
2120 | ||
2121 | /*****************************************************************************/ | |
2122 | ||
2123 | /* | |
2124 | * Host command service checking. This handles commands or messages | |
2125 | * coming from the slave to the host. Must have board shared memory | |
2126 | * enabled and interrupts off when called. Notice that by servicing the | |
2127 | * read data last we don't need to change the shared memory pointer | |
2128 | * during processing (which is a slow IO operation). | |
2129 | * Return value indicates if this port is still awaiting actions from | |
2130 | * the slave (like open, command, or even TX data being sent). If 0 | |
2131 | * then port is still busy, otherwise no longer busy. | |
2132 | */ | |
2133 | ||
1f8ec435 | 2134 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2135 | { |
4ac4360b AC |
2136 | cdkasy_t __iomem *ap; |
2137 | cdkctrl_t __iomem *cp; | |
2138 | struct tty_struct *tty; | |
2139 | asynotify_t nt; | |
2140 | unsigned long oldsigs; | |
2141 | int rc, donerx; | |
2142 | ||
2143 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); | |
1da177e4 LT |
2144 | cp = &ap->ctrl; |
2145 | ||
2146 | /* | |
2147 | * Check if we are waiting for an open completion message. | |
2148 | */ | |
2149 | if (test_bit(ST_OPENING, &portp->state)) { | |
4ac4360b AC |
2150 | rc = readl(&cp->openarg); |
2151 | if (readb(&cp->open) == 0 && rc != 0) { | |
1da177e4 LT |
2152 | if (rc > 0) |
2153 | rc--; | |
4ac4360b | 2154 | writel(0, &cp->openarg); |
1da177e4 LT |
2155 | portp->rc = rc; |
2156 | clear_bit(ST_OPENING, &portp->state); | |
2157 | wake_up_interruptible(&portp->raw_wait); | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | /* | |
2162 | * Check if we are waiting for a close completion message. | |
2163 | */ | |
2164 | if (test_bit(ST_CLOSING, &portp->state)) { | |
4ac4360b AC |
2165 | rc = (int) readl(&cp->closearg); |
2166 | if (readb(&cp->close) == 0 && rc != 0) { | |
1da177e4 LT |
2167 | if (rc > 0) |
2168 | rc--; | |
4ac4360b | 2169 | writel(0, &cp->closearg); |
1da177e4 LT |
2170 | portp->rc = rc; |
2171 | clear_bit(ST_CLOSING, &portp->state); | |
2172 | wake_up_interruptible(&portp->raw_wait); | |
2173 | } | |
2174 | } | |
2175 | ||
2176 | /* | |
2177 | * Check if we are waiting for a command completion message. We may | |
2178 | * need to copy out the command results associated with this command. | |
2179 | */ | |
2180 | if (test_bit(ST_CMDING, &portp->state)) { | |
4ac4360b AC |
2181 | rc = readl(&cp->status); |
2182 | if (readl(&cp->cmd) == 0 && rc != 0) { | |
1da177e4 LT |
2183 | if (rc > 0) |
2184 | rc--; | |
4ac4360b AC |
2185 | if (portp->argp != NULL) { |
2186 | memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), | |
1da177e4 | 2187 | portp->argsize); |
4ac4360b | 2188 | portp->argp = NULL; |
1da177e4 | 2189 | } |
4ac4360b | 2190 | writel(0, &cp->status); |
1da177e4 LT |
2191 | portp->rc = rc; |
2192 | clear_bit(ST_CMDING, &portp->state); | |
2193 | stli_dodelaycmd(portp, cp); | |
2194 | wake_up_interruptible(&portp->raw_wait); | |
2195 | } | |
2196 | } | |
2197 | ||
2198 | /* | |
2199 | * Check for any notification messages ready. This includes lots of | |
2200 | * different types of events - RX chars ready, RX break received, | |
2201 | * TX data low or empty in the slave, modem signals changed state. | |
2202 | */ | |
2203 | donerx = 0; | |
2204 | ||
2205 | if (ap->notify) { | |
2206 | nt = ap->changed; | |
2207 | ap->notify = 0; | |
d18a750f | 2208 | tty = tty_port_tty_get(&portp->port); |
1da177e4 LT |
2209 | |
2210 | if (nt.signal & SG_DCD) { | |
2211 | oldsigs = portp->sigs; | |
2212 | portp->sigs = stli_mktiocm(nt.sigvalue); | |
2213 | clear_bit(ST_GETSIGS, &portp->state); | |
2214 | if ((portp->sigs & TIOCM_CD) && | |
2215 | ((oldsigs & TIOCM_CD) == 0)) | |
b02f5ad6 | 2216 | wake_up_interruptible(&portp->port.open_wait); |
1da177e4 LT |
2217 | if ((oldsigs & TIOCM_CD) && |
2218 | ((portp->sigs & TIOCM_CD) == 0)) { | |
b02f5ad6 | 2219 | if (portp->port.flags & ASYNC_CHECK_CD) { |
1da177e4 | 2220 | if (tty) |
cfccaeea | 2221 | tty_hangup(tty); |
1da177e4 LT |
2222 | } |
2223 | } | |
2224 | } | |
2225 | ||
2226 | if (nt.data & DT_TXEMPTY) | |
2227 | clear_bit(ST_TXBUSY, &portp->state); | |
2228 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { | |
4ac4360b AC |
2229 | if (tty != NULL) { |
2230 | tty_wakeup(tty); | |
2231 | EBRDENABLE(brdp); | |
1da177e4 LT |
2232 | } |
2233 | } | |
2234 | ||
2235 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { | |
4ac4360b | 2236 | if (tty != NULL) { |
33f0f88f | 2237 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
b02f5ad6 | 2238 | if (portp->port.flags & ASYNC_SAK) { |
33f0f88f AC |
2239 | do_SAK(tty); |
2240 | EBRDENABLE(brdp); | |
1da177e4 | 2241 | } |
33f0f88f | 2242 | tty_schedule_flip(tty); |
1da177e4 LT |
2243 | } |
2244 | } | |
d18a750f | 2245 | tty_kref_put(tty); |
1da177e4 LT |
2246 | |
2247 | if (nt.data & DT_RXBUSY) { | |
2248 | donerx++; | |
2249 | stli_read(brdp, portp); | |
2250 | } | |
2251 | } | |
2252 | ||
2253 | /* | |
2254 | * It might seem odd that we are checking for more RX chars here. | |
2255 | * But, we need to handle the case where the tty buffer was previously | |
2256 | * filled, but we had more characters to pass up. The slave will not | |
2257 | * send any more RX notify messages until the RX buffer has been emptied. | |
2258 | * But it will leave the service bits on (since the buffer is not empty). | |
2259 | * So from here we can try to process more RX chars. | |
2260 | */ | |
2261 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { | |
2262 | clear_bit(ST_RXING, &portp->state); | |
2263 | stli_read(brdp, portp); | |
2264 | } | |
2265 | ||
2266 | return((test_bit(ST_OPENING, &portp->state) || | |
2267 | test_bit(ST_CLOSING, &portp->state) || | |
2268 | test_bit(ST_CMDING, &portp->state) || | |
2269 | test_bit(ST_TXBUSY, &portp->state) || | |
2270 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); | |
2271 | } | |
2272 | ||
2273 | /*****************************************************************************/ | |
2274 | ||
2275 | /* | |
2276 | * Service all ports on a particular board. Assumes that the boards | |
2277 | * shared memory is enabled, and that the page pointer is pointed | |
2278 | * at the cdk header structure. | |
2279 | */ | |
2280 | ||
1f8ec435 | 2281 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp) |
1da177e4 | 2282 | { |
1f8ec435 | 2283 | struct stliport *portp; |
4ac4360b AC |
2284 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; |
2285 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; | |
2286 | unsigned char __iomem *slavep; | |
2287 | int bitpos, bitat, bitsize; | |
2288 | int channr, nrdevs, slavebitchange; | |
1da177e4 LT |
2289 | |
2290 | bitsize = brdp->bitsize; | |
2291 | nrdevs = brdp->nrdevs; | |
2292 | ||
2293 | /* | |
2294 | * Check if slave wants any service. Basically we try to do as | |
2295 | * little work as possible here. There are 2 levels of service | |
2296 | * bits. So if there is nothing to do we bail early. We check | |
2297 | * 8 service bits at a time in the inner loop, so we can bypass | |
2298 | * the lot if none of them want service. | |
2299 | */ | |
4ac4360b | 2300 | memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), |
1da177e4 LT |
2301 | bitsize); |
2302 | ||
2303 | memset(&slavebits[0], 0, bitsize); | |
2304 | slavebitchange = 0; | |
2305 | ||
2306 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
2307 | if (hostbits[bitpos] == 0) | |
2308 | continue; | |
2309 | channr = bitpos * 8; | |
2310 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { | |
2311 | if (hostbits[bitpos] & bitat) { | |
2312 | portp = brdp->ports[(channr - 1)]; | |
2313 | if (stli_hostcmd(brdp, portp)) { | |
2314 | slavebitchange++; | |
2315 | slavebits[bitpos] |= bitat; | |
2316 | } | |
2317 | } | |
2318 | } | |
2319 | } | |
2320 | ||
2321 | /* | |
2322 | * If any of the ports are no longer busy then update them in the | |
2323 | * slave request bits. We need to do this after, since a host port | |
2324 | * service may initiate more slave requests. | |
2325 | */ | |
2326 | if (slavebitchange) { | |
4ac4360b AC |
2327 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2328 | slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; | |
1da177e4 | 2329 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
4ac4360b AC |
2330 | if (readb(slavebits + bitpos)) |
2331 | writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); | |
1da177e4 LT |
2332 | } |
2333 | } | |
2334 | } | |
2335 | ||
2336 | /*****************************************************************************/ | |
2337 | ||
2338 | /* | |
2339 | * Driver poll routine. This routine polls the boards in use and passes | |
2340 | * messages back up to host when necessary. This is actually very | |
2341 | * CPU efficient, since we will always have the kernel poll clock, it | |
2342 | * adds only a few cycles when idle (since board service can be | |
2343 | * determined very easily), but when loaded generates no interrupts | |
2344 | * (with their expensive associated context change). | |
2345 | */ | |
2346 | ||
2347 | static void stli_poll(unsigned long arg) | |
2348 | { | |
4ac4360b | 2349 | cdkhdr_t __iomem *hdrp; |
1f8ec435 | 2350 | struct stlibrd *brdp; |
1328d737 | 2351 | unsigned int brdnr; |
1da177e4 | 2352 | |
ff8efe97 | 2353 | mod_timer(&stli_timerlist, STLI_TIMEOUT); |
1da177e4 LT |
2354 | |
2355 | /* | |
2356 | * Check each board and do any servicing required. | |
2357 | */ | |
2358 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2359 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2360 | if (brdp == NULL) |
1da177e4 | 2361 | continue; |
8a1e803d | 2362 | if (!test_bit(BST_STARTED, &brdp->state)) |
1da177e4 LT |
2363 | continue; |
2364 | ||
4ac4360b | 2365 | spin_lock(&brd_lock); |
1da177e4 | 2366 | EBRDENABLE(brdp); |
4ac4360b AC |
2367 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2368 | if (readb(&hdrp->hostreq)) | |
1da177e4 LT |
2369 | stli_brdpoll(brdp, hdrp); |
2370 | EBRDDISABLE(brdp); | |
4ac4360b | 2371 | spin_unlock(&brd_lock); |
1da177e4 LT |
2372 | } |
2373 | } | |
2374 | ||
2375 | /*****************************************************************************/ | |
2376 | ||
2377 | /* | |
2378 | * Translate the termios settings into the port setting structure of | |
2379 | * the slave. | |
2380 | */ | |
2381 | ||
d18a750f AC |
2382 | static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, |
2383 | asyport_t *pp, struct ktermios *tiosp) | |
1da177e4 | 2384 | { |
1da177e4 LT |
2385 | memset(pp, 0, sizeof(asyport_t)); |
2386 | ||
2387 | /* | |
2388 | * Start of by setting the baud, char size, parity and stop bit info. | |
2389 | */ | |
d18a750f | 2390 | pp->baudout = tty_get_baud_rate(tty); |
1da177e4 | 2391 | if ((tiosp->c_cflag & CBAUD) == B38400) { |
b02f5ad6 | 2392 | if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
1da177e4 | 2393 | pp->baudout = 57600; |
b02f5ad6 | 2394 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
1da177e4 | 2395 | pp->baudout = 115200; |
b02f5ad6 | 2396 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
1da177e4 | 2397 | pp->baudout = 230400; |
b02f5ad6 | 2398 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
1da177e4 | 2399 | pp->baudout = 460800; |
b02f5ad6 | 2400 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) |
1da177e4 LT |
2401 | pp->baudout = (portp->baud_base / portp->custom_divisor); |
2402 | } | |
2403 | if (pp->baudout > STL_MAXBAUD) | |
2404 | pp->baudout = STL_MAXBAUD; | |
2405 | pp->baudin = pp->baudout; | |
2406 | ||
2407 | switch (tiosp->c_cflag & CSIZE) { | |
2408 | case CS5: | |
2409 | pp->csize = 5; | |
2410 | break; | |
2411 | case CS6: | |
2412 | pp->csize = 6; | |
2413 | break; | |
2414 | case CS7: | |
2415 | pp->csize = 7; | |
2416 | break; | |
2417 | default: | |
2418 | pp->csize = 8; | |
2419 | break; | |
2420 | } | |
2421 | ||
2422 | if (tiosp->c_cflag & CSTOPB) | |
2423 | pp->stopbs = PT_STOP2; | |
2424 | else | |
2425 | pp->stopbs = PT_STOP1; | |
2426 | ||
2427 | if (tiosp->c_cflag & PARENB) { | |
2428 | if (tiosp->c_cflag & PARODD) | |
2429 | pp->parity = PT_ODDPARITY; | |
2430 | else | |
2431 | pp->parity = PT_EVENPARITY; | |
2432 | } else { | |
2433 | pp->parity = PT_NOPARITY; | |
2434 | } | |
2435 | ||
2436 | /* | |
2437 | * Set up any flow control options enabled. | |
2438 | */ | |
2439 | if (tiosp->c_iflag & IXON) { | |
2440 | pp->flow |= F_IXON; | |
2441 | if (tiosp->c_iflag & IXANY) | |
2442 | pp->flow |= F_IXANY; | |
2443 | } | |
2444 | if (tiosp->c_cflag & CRTSCTS) | |
2445 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); | |
2446 | ||
2447 | pp->startin = tiosp->c_cc[VSTART]; | |
2448 | pp->stopin = tiosp->c_cc[VSTOP]; | |
2449 | pp->startout = tiosp->c_cc[VSTART]; | |
2450 | pp->stopout = tiosp->c_cc[VSTOP]; | |
2451 | ||
2452 | /* | |
2453 | * Set up the RX char marking mask with those RX error types we must | |
2454 | * catch. We can get the slave to help us out a little here, it will | |
2455 | * ignore parity errors and breaks for us, and mark parity errors in | |
2456 | * the data stream. | |
2457 | */ | |
2458 | if (tiosp->c_iflag & IGNPAR) | |
2459 | pp->iflag |= FI_IGNRXERRS; | |
2460 | if (tiosp->c_iflag & IGNBRK) | |
2461 | pp->iflag |= FI_IGNBREAK; | |
2462 | ||
2463 | portp->rxmarkmsk = 0; | |
2464 | if (tiosp->c_iflag & (INPCK | PARMRK)) | |
2465 | pp->iflag |= FI_1MARKRXERRS; | |
2466 | if (tiosp->c_iflag & BRKINT) | |
2467 | portp->rxmarkmsk |= BRKINT; | |
2468 | ||
2469 | /* | |
2470 | * Set up clocal processing as required. | |
2471 | */ | |
2472 | if (tiosp->c_cflag & CLOCAL) | |
b02f5ad6 | 2473 | portp->port.flags &= ~ASYNC_CHECK_CD; |
1da177e4 | 2474 | else |
b02f5ad6 | 2475 | portp->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2476 | |
2477 | /* | |
2478 | * Transfer any persistent flags into the asyport structure. | |
2479 | */ | |
2480 | pp->pflag = (portp->pflag & 0xffff); | |
2481 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; | |
2482 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; | |
2483 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; | |
2484 | } | |
2485 | ||
2486 | /*****************************************************************************/ | |
2487 | ||
2488 | /* | |
2489 | * Construct a slave signals structure for setting the DTR and RTS | |
2490 | * signals as specified. | |
2491 | */ | |
2492 | ||
2493 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) | |
2494 | { | |
1da177e4 LT |
2495 | memset(sp, 0, sizeof(asysigs_t)); |
2496 | if (dtr >= 0) { | |
2497 | sp->signal |= SG_DTR; | |
2498 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); | |
2499 | } | |
2500 | if (rts >= 0) { | |
2501 | sp->signal |= SG_RTS; | |
2502 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); | |
2503 | } | |
2504 | } | |
2505 | ||
2506 | /*****************************************************************************/ | |
2507 | ||
2508 | /* | |
2509 | * Convert the signals returned from the slave into a local TIOCM type | |
2510 | * signals value. We keep them locally in TIOCM format. | |
2511 | */ | |
2512 | ||
2513 | static long stli_mktiocm(unsigned long sigvalue) | |
2514 | { | |
4ac4360b | 2515 | long tiocm = 0; |
1da177e4 LT |
2516 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); |
2517 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); | |
2518 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); | |
2519 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); | |
2520 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); | |
2521 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); | |
2522 | return(tiocm); | |
2523 | } | |
2524 | ||
2525 | /*****************************************************************************/ | |
2526 | ||
2527 | /* | |
2528 | * All panels and ports actually attached have been worked out. All | |
2529 | * we need to do here is set up the appropriate per port data structures. | |
2530 | */ | |
2531 | ||
1f8ec435 | 2532 | static int stli_initports(struct stlibrd *brdp) |
1da177e4 | 2533 | { |
1f8ec435 | 2534 | struct stliport *portp; |
1328d737 | 2535 | unsigned int i, panelnr, panelport; |
1da177e4 | 2536 | |
1da177e4 | 2537 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { |
1f8ec435 | 2538 | portp = kzalloc(sizeof(struct stliport), GFP_KERNEL); |
b0b4ed72 | 2539 | if (!portp) { |
a6614999 | 2540 | printk(KERN_WARNING "istallion: failed to allocate port structure\n"); |
1da177e4 LT |
2541 | continue; |
2542 | } | |
d18a750f | 2543 | tty_port_init(&portp->port); |
31f35939 | 2544 | portp->port.ops = &stli_port_ops; |
1da177e4 LT |
2545 | portp->magic = STLI_PORTMAGIC; |
2546 | portp->portnr = i; | |
2547 | portp->brdnr = brdp->brdnr; | |
2548 | portp->panelnr = panelnr; | |
2549 | portp->baud_base = STL_BAUDBASE; | |
a6614999 | 2550 | portp->port.close_delay = STL_CLOSEDELAY; |
1da177e4 | 2551 | portp->closing_wait = 30 * HZ; |
b02f5ad6 AC |
2552 | init_waitqueue_head(&portp->port.open_wait); |
2553 | init_waitqueue_head(&portp->port.close_wait); | |
1da177e4 LT |
2554 | init_waitqueue_head(&portp->raw_wait); |
2555 | panelport++; | |
2556 | if (panelport >= brdp->panels[panelnr]) { | |
2557 | panelport = 0; | |
2558 | panelnr++; | |
2559 | } | |
2560 | brdp->ports[i] = portp; | |
2561 | } | |
2562 | ||
4ac4360b | 2563 | return 0; |
1da177e4 LT |
2564 | } |
2565 | ||
2566 | /*****************************************************************************/ | |
2567 | ||
2568 | /* | |
2569 | * All the following routines are board specific hardware operations. | |
2570 | */ | |
2571 | ||
1f8ec435 | 2572 | static void stli_ecpinit(struct stlibrd *brdp) |
1da177e4 LT |
2573 | { |
2574 | unsigned long memconf; | |
2575 | ||
1da177e4 LT |
2576 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2577 | udelay(10); | |
2578 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2579 | udelay(100); | |
2580 | ||
2581 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; | |
2582 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); | |
2583 | } | |
2584 | ||
2585 | /*****************************************************************************/ | |
2586 | ||
1f8ec435 | 2587 | static void stli_ecpenable(struct stlibrd *brdp) |
1da177e4 | 2588 | { |
1da177e4 LT |
2589 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); |
2590 | } | |
2591 | ||
2592 | /*****************************************************************************/ | |
2593 | ||
1f8ec435 | 2594 | static void stli_ecpdisable(struct stlibrd *brdp) |
1da177e4 | 2595 | { |
1da177e4 LT |
2596 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
2597 | } | |
2598 | ||
2599 | /*****************************************************************************/ | |
2600 | ||
1f8ec435 | 2601 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2602 | { |
29756fa3 | 2603 | void __iomem *ptr; |
4ac4360b | 2604 | unsigned char val; |
1da177e4 LT |
2605 | |
2606 | if (offset > brdp->memsize) { | |
a6614999 | 2607 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2608 | "range at line=%d(%d), brd=%d\n", |
2609 | (int) offset, line, __LINE__, brdp->brdnr); | |
2610 | ptr = NULL; | |
2611 | val = 0; | |
2612 | } else { | |
2613 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); | |
2614 | val = (unsigned char) (offset / ECP_ATPAGESIZE); | |
2615 | } | |
2616 | outb(val, (brdp->iobase + ECP_ATMEMPR)); | |
2617 | return(ptr); | |
2618 | } | |
2619 | ||
2620 | /*****************************************************************************/ | |
2621 | ||
1f8ec435 | 2622 | static void stli_ecpreset(struct stlibrd *brdp) |
1da177e4 | 2623 | { |
1da177e4 LT |
2624 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2625 | udelay(10); | |
2626 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2627 | udelay(500); | |
2628 | } | |
2629 | ||
2630 | /*****************************************************************************/ | |
2631 | ||
1f8ec435 | 2632 | static void stli_ecpintr(struct stlibrd *brdp) |
1da177e4 | 2633 | { |
1da177e4 LT |
2634 | outb(0x1, brdp->iobase); |
2635 | } | |
2636 | ||
2637 | /*****************************************************************************/ | |
2638 | ||
2639 | /* | |
2640 | * The following set of functions act on ECP EISA boards. | |
2641 | */ | |
2642 | ||
1f8ec435 | 2643 | static void stli_ecpeiinit(struct stlibrd *brdp) |
1da177e4 LT |
2644 | { |
2645 | unsigned long memconf; | |
2646 | ||
1da177e4 LT |
2647 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
2648 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2649 | udelay(10); | |
2650 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2651 | udelay(500); | |
2652 | ||
2653 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; | |
2654 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); | |
2655 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; | |
2656 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); | |
2657 | } | |
2658 | ||
2659 | /*****************************************************************************/ | |
2660 | ||
1f8ec435 | 2661 | static void stli_ecpeienable(struct stlibrd *brdp) |
1da177e4 LT |
2662 | { |
2663 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); | |
2664 | } | |
2665 | ||
2666 | /*****************************************************************************/ | |
2667 | ||
1f8ec435 | 2668 | static void stli_ecpeidisable(struct stlibrd *brdp) |
1da177e4 LT |
2669 | { |
2670 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2671 | } | |
2672 | ||
2673 | /*****************************************************************************/ | |
2674 | ||
1f8ec435 | 2675 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2676 | { |
29756fa3 | 2677 | void __iomem *ptr; |
1da177e4 LT |
2678 | unsigned char val; |
2679 | ||
1da177e4 | 2680 | if (offset > brdp->memsize) { |
a6614999 | 2681 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2682 | "range at line=%d(%d), brd=%d\n", |
2683 | (int) offset, line, __LINE__, brdp->brdnr); | |
2684 | ptr = NULL; | |
2685 | val = 0; | |
2686 | } else { | |
2687 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); | |
2688 | if (offset < ECP_EIPAGESIZE) | |
2689 | val = ECP_EIENABLE; | |
2690 | else | |
2691 | val = ECP_EIENABLE | 0x40; | |
2692 | } | |
2693 | outb(val, (brdp->iobase + ECP_EICONFR)); | |
2694 | return(ptr); | |
2695 | } | |
2696 | ||
2697 | /*****************************************************************************/ | |
2698 | ||
1f8ec435 | 2699 | static void stli_ecpeireset(struct stlibrd *brdp) |
1da177e4 LT |
2700 | { |
2701 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2702 | udelay(10); | |
2703 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2704 | udelay(500); | |
2705 | } | |
2706 | ||
2707 | /*****************************************************************************/ | |
2708 | ||
2709 | /* | |
2710 | * The following set of functions act on ECP MCA boards. | |
2711 | */ | |
2712 | ||
1f8ec435 | 2713 | static void stli_ecpmcenable(struct stlibrd *brdp) |
1da177e4 LT |
2714 | { |
2715 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); | |
2716 | } | |
2717 | ||
2718 | /*****************************************************************************/ | |
2719 | ||
1f8ec435 | 2720 | static void stli_ecpmcdisable(struct stlibrd *brdp) |
1da177e4 LT |
2721 | { |
2722 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2723 | } | |
2724 | ||
2725 | /*****************************************************************************/ | |
2726 | ||
1f8ec435 | 2727 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2728 | { |
29756fa3 | 2729 | void __iomem *ptr; |
4ac4360b | 2730 | unsigned char val; |
1da177e4 LT |
2731 | |
2732 | if (offset > brdp->memsize) { | |
a6614999 | 2733 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2734 | "range at line=%d(%d), brd=%d\n", |
2735 | (int) offset, line, __LINE__, brdp->brdnr); | |
2736 | ptr = NULL; | |
2737 | val = 0; | |
2738 | } else { | |
2739 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); | |
2740 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; | |
2741 | } | |
2742 | outb(val, (brdp->iobase + ECP_MCCONFR)); | |
2743 | return(ptr); | |
2744 | } | |
2745 | ||
2746 | /*****************************************************************************/ | |
2747 | ||
1f8ec435 | 2748 | static void stli_ecpmcreset(struct stlibrd *brdp) |
1da177e4 LT |
2749 | { |
2750 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); | |
2751 | udelay(10); | |
2752 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2753 | udelay(500); | |
2754 | } | |
2755 | ||
2756 | /*****************************************************************************/ | |
2757 | ||
2758 | /* | |
2759 | * The following set of functions act on ECP PCI boards. | |
2760 | */ | |
2761 | ||
1f8ec435 | 2762 | static void stli_ecppciinit(struct stlibrd *brdp) |
1da177e4 | 2763 | { |
1da177e4 LT |
2764 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
2765 | udelay(10); | |
2766 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
2767 | udelay(500); | |
2768 | } | |
2769 | ||
2770 | /*****************************************************************************/ | |
2771 | ||
1f8ec435 | 2772 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2773 | { |
29756fa3 | 2774 | void __iomem *ptr; |
1da177e4 LT |
2775 | unsigned char val; |
2776 | ||
1da177e4 | 2777 | if (offset > brdp->memsize) { |
a6614999 | 2778 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2779 | "range at line=%d(%d), board=%d\n", |
2780 | (int) offset, line, __LINE__, brdp->brdnr); | |
2781 | ptr = NULL; | |
2782 | val = 0; | |
2783 | } else { | |
2784 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); | |
2785 | val = (offset / ECP_PCIPAGESIZE) << 1; | |
2786 | } | |
2787 | outb(val, (brdp->iobase + ECP_PCICONFR)); | |
2788 | return(ptr); | |
2789 | } | |
2790 | ||
2791 | /*****************************************************************************/ | |
2792 | ||
1f8ec435 | 2793 | static void stli_ecppcireset(struct stlibrd *brdp) |
1da177e4 LT |
2794 | { |
2795 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
2796 | udelay(10); | |
2797 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
2798 | udelay(500); | |
2799 | } | |
2800 | ||
2801 | /*****************************************************************************/ | |
2802 | ||
2803 | /* | |
2804 | * The following routines act on ONboards. | |
2805 | */ | |
2806 | ||
1f8ec435 | 2807 | static void stli_onbinit(struct stlibrd *brdp) |
1da177e4 LT |
2808 | { |
2809 | unsigned long memconf; | |
2810 | ||
1da177e4 LT |
2811 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
2812 | udelay(10); | |
2813 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
2814 | mdelay(1000); | |
2815 | ||
2816 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; | |
2817 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); | |
2818 | outb(0x1, brdp->iobase); | |
2819 | mdelay(1); | |
2820 | } | |
2821 | ||
2822 | /*****************************************************************************/ | |
2823 | ||
1f8ec435 | 2824 | static void stli_onbenable(struct stlibrd *brdp) |
1da177e4 | 2825 | { |
1da177e4 LT |
2826 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); |
2827 | } | |
2828 | ||
2829 | /*****************************************************************************/ | |
2830 | ||
1f8ec435 | 2831 | static void stli_onbdisable(struct stlibrd *brdp) |
1da177e4 | 2832 | { |
1da177e4 LT |
2833 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); |
2834 | } | |
2835 | ||
2836 | /*****************************************************************************/ | |
2837 | ||
1f8ec435 | 2838 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2839 | { |
29756fa3 | 2840 | void __iomem *ptr; |
1da177e4 | 2841 | |
1da177e4 | 2842 | if (offset > brdp->memsize) { |
a6614999 | 2843 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2844 | "range at line=%d(%d), brd=%d\n", |
2845 | (int) offset, line, __LINE__, brdp->brdnr); | |
2846 | ptr = NULL; | |
2847 | } else { | |
2848 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); | |
2849 | } | |
2850 | return(ptr); | |
2851 | } | |
2852 | ||
2853 | /*****************************************************************************/ | |
2854 | ||
1f8ec435 | 2855 | static void stli_onbreset(struct stlibrd *brdp) |
1da177e4 | 2856 | { |
1da177e4 LT |
2857 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
2858 | udelay(10); | |
2859 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
2860 | mdelay(1000); | |
2861 | } | |
2862 | ||
2863 | /*****************************************************************************/ | |
2864 | ||
2865 | /* | |
2866 | * The following routines act on ONboard EISA. | |
2867 | */ | |
2868 | ||
1f8ec435 | 2869 | static void stli_onbeinit(struct stlibrd *brdp) |
1da177e4 LT |
2870 | { |
2871 | unsigned long memconf; | |
2872 | ||
1da177e4 LT |
2873 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
2874 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
2875 | udelay(10); | |
2876 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
2877 | mdelay(1000); | |
2878 | ||
2879 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; | |
2880 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); | |
2881 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; | |
2882 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); | |
2883 | outb(0x1, brdp->iobase); | |
2884 | mdelay(1); | |
2885 | } | |
2886 | ||
2887 | /*****************************************************************************/ | |
2888 | ||
1f8ec435 | 2889 | static void stli_onbeenable(struct stlibrd *brdp) |
1da177e4 | 2890 | { |
1da177e4 LT |
2891 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); |
2892 | } | |
2893 | ||
2894 | /*****************************************************************************/ | |
2895 | ||
1f8ec435 | 2896 | static void stli_onbedisable(struct stlibrd *brdp) |
1da177e4 | 2897 | { |
1da177e4 LT |
2898 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
2899 | } | |
2900 | ||
2901 | /*****************************************************************************/ | |
2902 | ||
1f8ec435 | 2903 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2904 | { |
29756fa3 | 2905 | void __iomem *ptr; |
4ac4360b | 2906 | unsigned char val; |
1da177e4 LT |
2907 | |
2908 | if (offset > brdp->memsize) { | |
a6614999 | 2909 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2910 | "range at line=%d(%d), brd=%d\n", |
2911 | (int) offset, line, __LINE__, brdp->brdnr); | |
2912 | ptr = NULL; | |
2913 | val = 0; | |
2914 | } else { | |
2915 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); | |
2916 | if (offset < ONB_EIPAGESIZE) | |
2917 | val = ONB_EIENABLE; | |
2918 | else | |
2919 | val = ONB_EIENABLE | 0x40; | |
2920 | } | |
2921 | outb(val, (brdp->iobase + ONB_EICONFR)); | |
2922 | return(ptr); | |
2923 | } | |
2924 | ||
2925 | /*****************************************************************************/ | |
2926 | ||
1f8ec435 | 2927 | static void stli_onbereset(struct stlibrd *brdp) |
1da177e4 | 2928 | { |
1da177e4 LT |
2929 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
2930 | udelay(10); | |
2931 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
2932 | mdelay(1000); | |
2933 | } | |
2934 | ||
2935 | /*****************************************************************************/ | |
2936 | ||
2937 | /* | |
2938 | * The following routines act on Brumby boards. | |
2939 | */ | |
2940 | ||
1f8ec435 | 2941 | static void stli_bbyinit(struct stlibrd *brdp) |
1da177e4 | 2942 | { |
1da177e4 LT |
2943 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
2944 | udelay(10); | |
2945 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
2946 | mdelay(1000); | |
2947 | outb(0x1, brdp->iobase); | |
2948 | mdelay(1); | |
2949 | } | |
2950 | ||
2951 | /*****************************************************************************/ | |
2952 | ||
1f8ec435 | 2953 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2954 | { |
29756fa3 | 2955 | void __iomem *ptr; |
4ac4360b | 2956 | unsigned char val; |
1da177e4 | 2957 | |
4ac4360b | 2958 | BUG_ON(offset > brdp->memsize); |
1da177e4 | 2959 | |
4ac4360b AC |
2960 | ptr = brdp->membase + (offset % BBY_PAGESIZE); |
2961 | val = (unsigned char) (offset / BBY_PAGESIZE); | |
1da177e4 LT |
2962 | outb(val, (brdp->iobase + BBY_ATCONFR)); |
2963 | return(ptr); | |
2964 | } | |
2965 | ||
2966 | /*****************************************************************************/ | |
2967 | ||
1f8ec435 | 2968 | static void stli_bbyreset(struct stlibrd *brdp) |
1da177e4 | 2969 | { |
1da177e4 LT |
2970 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
2971 | udelay(10); | |
2972 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
2973 | mdelay(1000); | |
2974 | } | |
2975 | ||
2976 | /*****************************************************************************/ | |
2977 | ||
2978 | /* | |
2979 | * The following routines act on original old Stallion boards. | |
2980 | */ | |
2981 | ||
1f8ec435 | 2982 | static void stli_stalinit(struct stlibrd *brdp) |
1da177e4 | 2983 | { |
1da177e4 LT |
2984 | outb(0x1, brdp->iobase); |
2985 | mdelay(1000); | |
2986 | } | |
2987 | ||
2988 | /*****************************************************************************/ | |
2989 | ||
1f8ec435 | 2990 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2991 | { |
4ac4360b AC |
2992 | BUG_ON(offset > brdp->memsize); |
2993 | return brdp->membase + (offset % STAL_PAGESIZE); | |
1da177e4 LT |
2994 | } |
2995 | ||
2996 | /*****************************************************************************/ | |
2997 | ||
1f8ec435 | 2998 | static void stli_stalreset(struct stlibrd *brdp) |
1da177e4 | 2999 | { |
4ac4360b | 3000 | u32 __iomem *vecp; |
1da177e4 | 3001 | |
4ac4360b AC |
3002 | vecp = (u32 __iomem *) (brdp->membase + 0x30); |
3003 | writel(0xffff0000, vecp); | |
1da177e4 LT |
3004 | outb(0, brdp->iobase); |
3005 | mdelay(1000); | |
3006 | } | |
3007 | ||
3008 | /*****************************************************************************/ | |
3009 | ||
3010 | /* | |
3011 | * Try to find an ECP board and initialize it. This handles only ECP | |
3012 | * board types. | |
3013 | */ | |
3014 | ||
1f8ec435 | 3015 | static int stli_initecp(struct stlibrd *brdp) |
1da177e4 | 3016 | { |
4ac4360b AC |
3017 | cdkecpsig_t sig; |
3018 | cdkecpsig_t __iomem *sigsp; | |
3019 | unsigned int status, nxtid; | |
3020 | char *name; | |
8f8f5a58 | 3021 | int retval, panelnr, nrports; |
1da177e4 | 3022 | |
8f8f5a58 JS |
3023 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) { |
3024 | retval = -ENODEV; | |
3025 | goto err; | |
3026 | } | |
3027 | ||
b306122d IK |
3028 | brdp->iosize = ECP_IOSIZE; |
3029 | ||
8f8f5a58 JS |
3030 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3031 | retval = -EIO; | |
3032 | goto err; | |
1da177e4 LT |
3033 | } |
3034 | ||
1da177e4 LT |
3035 | /* |
3036 | * Based on the specific board type setup the common vars to access | |
3037 | * and enable shared memory. Set all board specific information now | |
3038 | * as well. | |
3039 | */ | |
3040 | switch (brdp->brdtype) { | |
3041 | case BRD_ECP: | |
1da177e4 LT |
3042 | brdp->memsize = ECP_MEMSIZE; |
3043 | brdp->pagesize = ECP_ATPAGESIZE; | |
3044 | brdp->init = stli_ecpinit; | |
3045 | brdp->enable = stli_ecpenable; | |
3046 | brdp->reenable = stli_ecpenable; | |
3047 | brdp->disable = stli_ecpdisable; | |
3048 | brdp->getmemptr = stli_ecpgetmemptr; | |
3049 | brdp->intr = stli_ecpintr; | |
3050 | brdp->reset = stli_ecpreset; | |
3051 | name = "serial(EC8/64)"; | |
3052 | break; | |
3053 | ||
3054 | case BRD_ECPE: | |
1da177e4 LT |
3055 | brdp->memsize = ECP_MEMSIZE; |
3056 | brdp->pagesize = ECP_EIPAGESIZE; | |
3057 | brdp->init = stli_ecpeiinit; | |
3058 | brdp->enable = stli_ecpeienable; | |
3059 | brdp->reenable = stli_ecpeienable; | |
3060 | brdp->disable = stli_ecpeidisable; | |
3061 | brdp->getmemptr = stli_ecpeigetmemptr; | |
3062 | brdp->intr = stli_ecpintr; | |
3063 | brdp->reset = stli_ecpeireset; | |
3064 | name = "serial(EC8/64-EI)"; | |
3065 | break; | |
3066 | ||
3067 | case BRD_ECPMC: | |
1da177e4 LT |
3068 | brdp->memsize = ECP_MEMSIZE; |
3069 | brdp->pagesize = ECP_MCPAGESIZE; | |
3070 | brdp->init = NULL; | |
3071 | brdp->enable = stli_ecpmcenable; | |
3072 | brdp->reenable = stli_ecpmcenable; | |
3073 | brdp->disable = stli_ecpmcdisable; | |
3074 | brdp->getmemptr = stli_ecpmcgetmemptr; | |
3075 | brdp->intr = stli_ecpintr; | |
3076 | brdp->reset = stli_ecpmcreset; | |
3077 | name = "serial(EC8/64-MCA)"; | |
3078 | break; | |
3079 | ||
3080 | case BRD_ECPPCI: | |
1da177e4 LT |
3081 | brdp->memsize = ECP_PCIMEMSIZE; |
3082 | brdp->pagesize = ECP_PCIPAGESIZE; | |
3083 | brdp->init = stli_ecppciinit; | |
3084 | brdp->enable = NULL; | |
3085 | brdp->reenable = NULL; | |
3086 | brdp->disable = NULL; | |
3087 | brdp->getmemptr = stli_ecppcigetmemptr; | |
3088 | brdp->intr = stli_ecpintr; | |
3089 | brdp->reset = stli_ecppcireset; | |
3090 | name = "serial(EC/RA-PCI)"; | |
3091 | break; | |
3092 | ||
3093 | default: | |
8f8f5a58 JS |
3094 | retval = -EINVAL; |
3095 | goto err_reg; | |
1da177e4 LT |
3096 | } |
3097 | ||
3098 | /* | |
3099 | * The per-board operations structure is all set up, so now let's go | |
3100 | * and get the board operational. Firstly initialize board configuration | |
3101 | * registers. Set the memory mapping info so we can get at the boards | |
3102 | * shared memory. | |
3103 | */ | |
3104 | EBRDINIT(brdp); | |
3105 | ||
24cb2335 | 3106 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
8f8f5a58 JS |
3107 | if (brdp->membase == NULL) { |
3108 | retval = -ENOMEM; | |
3109 | goto err_reg; | |
1da177e4 LT |
3110 | } |
3111 | ||
3112 | /* | |
3113 | * Now that all specific code is set up, enable the shared memory and | |
3114 | * look for the a signature area that will tell us exactly what board | |
3115 | * this is, and what it is connected to it. | |
3116 | */ | |
3117 | EBRDENABLE(brdp); | |
4ac4360b | 3118 | sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
634965f5 | 3119 | memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); |
1da177e4 LT |
3120 | EBRDDISABLE(brdp); |
3121 | ||
8f8f5a58 JS |
3122 | if (sig.magic != cpu_to_le32(ECP_MAGIC)) { |
3123 | retval = -ENODEV; | |
3124 | goto err_unmap; | |
1da177e4 LT |
3125 | } |
3126 | ||
3127 | /* | |
3128 | * Scan through the signature looking at the panels connected to the | |
3129 | * board. Calculate the total number of ports as we go. | |
3130 | */ | |
3131 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { | |
3132 | status = sig.panelid[nxtid]; | |
3133 | if ((status & ECH_PNLIDMASK) != nxtid) | |
3134 | break; | |
3135 | ||
3136 | brdp->panelids[panelnr] = status; | |
3137 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; | |
3138 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) | |
3139 | nxtid++; | |
3140 | brdp->panels[panelnr] = nrports; | |
3141 | brdp->nrports += nrports; | |
3142 | nxtid++; | |
3143 | brdp->nrpanels++; | |
3144 | } | |
3145 | ||
3146 | ||
8a1e803d | 3147 | set_bit(BST_FOUND, &brdp->state); |
4ac4360b | 3148 | return 0; |
8f8f5a58 JS |
3149 | err_unmap: |
3150 | iounmap(brdp->membase); | |
3151 | brdp->membase = NULL; | |
3152 | err_reg: | |
3153 | release_region(brdp->iobase, brdp->iosize); | |
3154 | err: | |
3155 | return retval; | |
1da177e4 LT |
3156 | } |
3157 | ||
3158 | /*****************************************************************************/ | |
3159 | ||
3160 | /* | |
3161 | * Try to find an ONboard, Brumby or Stallion board and initialize it. | |
3162 | * This handles only these board types. | |
3163 | */ | |
3164 | ||
1f8ec435 | 3165 | static int stli_initonb(struct stlibrd *brdp) |
1da177e4 | 3166 | { |
4ac4360b AC |
3167 | cdkonbsig_t sig; |
3168 | cdkonbsig_t __iomem *sigsp; | |
3169 | char *name; | |
8f8f5a58 | 3170 | int i, retval; |
1da177e4 LT |
3171 | |
3172 | /* | |
3173 | * Do a basic sanity check on the IO and memory addresses. | |
3174 | */ | |
8f8f5a58 JS |
3175 | if (brdp->iobase == 0 || brdp->memaddr == 0) { |
3176 | retval = -ENODEV; | |
3177 | goto err; | |
3178 | } | |
1da177e4 LT |
3179 | |
3180 | brdp->iosize = ONB_IOSIZE; | |
3181 | ||
8f8f5a58 JS |
3182 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3183 | retval = -EIO; | |
3184 | goto err; | |
3185 | } | |
1da177e4 LT |
3186 | |
3187 | /* | |
3188 | * Based on the specific board type setup the common vars to access | |
3189 | * and enable shared memory. Set all board specific information now | |
3190 | * as well. | |
3191 | */ | |
3192 | switch (brdp->brdtype) { | |
3193 | case BRD_ONBOARD: | |
1da177e4 | 3194 | case BRD_ONBOARD2: |
1da177e4 LT |
3195 | brdp->memsize = ONB_MEMSIZE; |
3196 | brdp->pagesize = ONB_ATPAGESIZE; | |
3197 | brdp->init = stli_onbinit; | |
3198 | brdp->enable = stli_onbenable; | |
3199 | brdp->reenable = stli_onbenable; | |
3200 | brdp->disable = stli_onbdisable; | |
3201 | brdp->getmemptr = stli_onbgetmemptr; | |
3202 | brdp->intr = stli_ecpintr; | |
3203 | brdp->reset = stli_onbreset; | |
3204 | if (brdp->memaddr > 0x100000) | |
3205 | brdp->enabval = ONB_MEMENABHI; | |
3206 | else | |
3207 | brdp->enabval = ONB_MEMENABLO; | |
3208 | name = "serial(ONBoard)"; | |
3209 | break; | |
3210 | ||
3211 | case BRD_ONBOARDE: | |
1da177e4 LT |
3212 | brdp->memsize = ONB_EIMEMSIZE; |
3213 | brdp->pagesize = ONB_EIPAGESIZE; | |
3214 | brdp->init = stli_onbeinit; | |
3215 | brdp->enable = stli_onbeenable; | |
3216 | brdp->reenable = stli_onbeenable; | |
3217 | brdp->disable = stli_onbedisable; | |
3218 | brdp->getmemptr = stli_onbegetmemptr; | |
3219 | brdp->intr = stli_ecpintr; | |
3220 | brdp->reset = stli_onbereset; | |
3221 | name = "serial(ONBoard/E)"; | |
3222 | break; | |
3223 | ||
3224 | case BRD_BRUMBY4: | |
1da177e4 LT |
3225 | brdp->memsize = BBY_MEMSIZE; |
3226 | brdp->pagesize = BBY_PAGESIZE; | |
3227 | brdp->init = stli_bbyinit; | |
3228 | brdp->enable = NULL; | |
3229 | brdp->reenable = NULL; | |
3230 | brdp->disable = NULL; | |
3231 | brdp->getmemptr = stli_bbygetmemptr; | |
3232 | brdp->intr = stli_ecpintr; | |
3233 | brdp->reset = stli_bbyreset; | |
3234 | name = "serial(Brumby)"; | |
3235 | break; | |
3236 | ||
3237 | case BRD_STALLION: | |
1da177e4 LT |
3238 | brdp->memsize = STAL_MEMSIZE; |
3239 | brdp->pagesize = STAL_PAGESIZE; | |
3240 | brdp->init = stli_stalinit; | |
3241 | brdp->enable = NULL; | |
3242 | brdp->reenable = NULL; | |
3243 | brdp->disable = NULL; | |
3244 | brdp->getmemptr = stli_stalgetmemptr; | |
3245 | brdp->intr = stli_ecpintr; | |
3246 | brdp->reset = stli_stalreset; | |
3247 | name = "serial(Stallion)"; | |
3248 | break; | |
3249 | ||
3250 | default: | |
8f8f5a58 JS |
3251 | retval = -EINVAL; |
3252 | goto err_reg; | |
1da177e4 LT |
3253 | } |
3254 | ||
3255 | /* | |
3256 | * The per-board operations structure is all set up, so now let's go | |
3257 | * and get the board operational. Firstly initialize board configuration | |
3258 | * registers. Set the memory mapping info so we can get at the boards | |
3259 | * shared memory. | |
3260 | */ | |
3261 | EBRDINIT(brdp); | |
3262 | ||
24cb2335 | 3263 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
8f8f5a58 JS |
3264 | if (brdp->membase == NULL) { |
3265 | retval = -ENOMEM; | |
3266 | goto err_reg; | |
1da177e4 LT |
3267 | } |
3268 | ||
3269 | /* | |
3270 | * Now that all specific code is set up, enable the shared memory and | |
3271 | * look for the a signature area that will tell us exactly what board | |
3272 | * this is, and how many ports. | |
3273 | */ | |
3274 | EBRDENABLE(brdp); | |
4ac4360b AC |
3275 | sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
3276 | memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); | |
1da177e4 LT |
3277 | EBRDDISABLE(brdp); |
3278 | ||
4ac4360b AC |
3279 | if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || |
3280 | sig.magic1 != cpu_to_le16(ONB_MAGIC1) || | |
3281 | sig.magic2 != cpu_to_le16(ONB_MAGIC2) || | |
8f8f5a58 JS |
3282 | sig.magic3 != cpu_to_le16(ONB_MAGIC3)) { |
3283 | retval = -ENODEV; | |
3284 | goto err_unmap; | |
1da177e4 LT |
3285 | } |
3286 | ||
3287 | /* | |
3288 | * Scan through the signature alive mask and calculate how many ports | |
3289 | * there are on this board. | |
3290 | */ | |
3291 | brdp->nrpanels = 1; | |
3292 | if (sig.amask1) { | |
3293 | brdp->nrports = 32; | |
3294 | } else { | |
3295 | for (i = 0; (i < 16); i++) { | |
3296 | if (((sig.amask0 << i) & 0x8000) == 0) | |
3297 | break; | |
3298 | } | |
3299 | brdp->nrports = i; | |
3300 | } | |
3301 | brdp->panels[0] = brdp->nrports; | |
3302 | ||
3303 | ||
8a1e803d | 3304 | set_bit(BST_FOUND, &brdp->state); |
4ac4360b | 3305 | return 0; |
8f8f5a58 JS |
3306 | err_unmap: |
3307 | iounmap(brdp->membase); | |
3308 | brdp->membase = NULL; | |
3309 | err_reg: | |
3310 | release_region(brdp->iobase, brdp->iosize); | |
3311 | err: | |
3312 | return retval; | |
1da177e4 LT |
3313 | } |
3314 | ||
3315 | /*****************************************************************************/ | |
3316 | ||
3317 | /* | |
3318 | * Start up a running board. This routine is only called after the | |
3319 | * code has been down loaded to the board and is operational. It will | |
3320 | * read in the memory map, and get the show on the road... | |
3321 | */ | |
3322 | ||
1f8ec435 | 3323 | static int stli_startbrd(struct stlibrd *brdp) |
1da177e4 | 3324 | { |
4ac4360b AC |
3325 | cdkhdr_t __iomem *hdrp; |
3326 | cdkmem_t __iomem *memp; | |
3327 | cdkasy_t __iomem *ap; | |
3328 | unsigned long flags; | |
1328d737 | 3329 | unsigned int portnr, nrdevs, i; |
1f8ec435 | 3330 | struct stliport *portp; |
1328d737 | 3331 | int rc = 0; |
4ac4360b AC |
3332 | u32 memoff; |
3333 | ||
3334 | spin_lock_irqsave(&brd_lock, flags); | |
1da177e4 | 3335 | EBRDENABLE(brdp); |
4ac4360b | 3336 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1da177e4 LT |
3337 | nrdevs = hdrp->nrdevs; |
3338 | ||
3339 | #if 0 | |
3340 | printk("%s(%d): CDK version %d.%d.%d --> " | |
3341 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", | |
4ac4360b AC |
3342 | __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), |
3343 | readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), | |
3344 | readl(&hdrp->slavep)); | |
1da177e4 LT |
3345 | #endif |
3346 | ||
3347 | if (nrdevs < (brdp->nrports + 1)) { | |
a6614999 | 3348 | printk(KERN_ERR "istallion: slave failed to allocate memory for " |
1da177e4 LT |
3349 | "all devices, devices=%d\n", nrdevs); |
3350 | brdp->nrports = nrdevs - 1; | |
3351 | } | |
3352 | brdp->nrdevs = nrdevs; | |
3353 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; | |
3354 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; | |
3355 | brdp->bitsize = (nrdevs + 7) / 8; | |
4ac4360b AC |
3356 | memoff = readl(&hdrp->memp); |
3357 | if (memoff > brdp->memsize) { | |
a6614999 | 3358 | printk(KERN_ERR "istallion: corrupted shared memory region?\n"); |
1da177e4 LT |
3359 | rc = -EIO; |
3360 | goto stli_donestartup; | |
3361 | } | |
4ac4360b AC |
3362 | memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); |
3363 | if (readw(&memp->dtype) != TYP_ASYNCTRL) { | |
a6614999 | 3364 | printk(KERN_ERR "istallion: no slave control device found\n"); |
1da177e4 LT |
3365 | goto stli_donestartup; |
3366 | } | |
3367 | memp++; | |
3368 | ||
3369 | /* | |
3370 | * Cycle through memory allocation of each port. We are guaranteed to | |
3371 | * have all ports inside the first page of slave window, so no need to | |
3372 | * change pages while reading memory map. | |
3373 | */ | |
3374 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { | |
4ac4360b | 3375 | if (readw(&memp->dtype) != TYP_ASYNC) |
1da177e4 LT |
3376 | break; |
3377 | portp = brdp->ports[portnr]; | |
4ac4360b | 3378 | if (portp == NULL) |
1da177e4 LT |
3379 | break; |
3380 | portp->devnr = i; | |
4ac4360b | 3381 | portp->addr = readl(&memp->offset); |
1da177e4 LT |
3382 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); |
3383 | portp->portidx = (unsigned char) (i / 8); | |
3384 | portp->portbit = (unsigned char) (0x1 << (i % 8)); | |
3385 | } | |
3386 | ||
4ac4360b | 3387 | writeb(0xff, &hdrp->slavereq); |
1da177e4 LT |
3388 | |
3389 | /* | |
3390 | * For each port setup a local copy of the RX and TX buffer offsets | |
3391 | * and sizes. We do this separate from the above, because we need to | |
3392 | * move the shared memory page... | |
3393 | */ | |
3394 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { | |
3395 | portp = brdp->ports[portnr]; | |
4ac4360b | 3396 | if (portp == NULL) |
1da177e4 LT |
3397 | break; |
3398 | if (portp->addr == 0) | |
3399 | break; | |
4ac4360b AC |
3400 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
3401 | if (ap != NULL) { | |
3402 | portp->rxsize = readw(&ap->rxq.size); | |
3403 | portp->txsize = readw(&ap->txq.size); | |
3404 | portp->rxoffset = readl(&ap->rxq.offset); | |
3405 | portp->txoffset = readl(&ap->txq.offset); | |
1da177e4 LT |
3406 | } |
3407 | } | |
3408 | ||
3409 | stli_donestartup: | |
3410 | EBRDDISABLE(brdp); | |
4ac4360b | 3411 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
3412 | |
3413 | if (rc == 0) | |
8a1e803d | 3414 | set_bit(BST_STARTED, &brdp->state); |
1da177e4 LT |
3415 | |
3416 | if (! stli_timeron) { | |
3417 | stli_timeron++; | |
ff8efe97 | 3418 | mod_timer(&stli_timerlist, STLI_TIMEOUT); |
1da177e4 LT |
3419 | } |
3420 | ||
4ac4360b | 3421 | return rc; |
1da177e4 LT |
3422 | } |
3423 | ||
3424 | /*****************************************************************************/ | |
3425 | ||
3426 | /* | |
3427 | * Probe and initialize the specified board. | |
3428 | */ | |
3429 | ||
1f8ec435 | 3430 | static int __devinit stli_brdinit(struct stlibrd *brdp) |
1da177e4 | 3431 | { |
8f8f5a58 JS |
3432 | int retval; |
3433 | ||
1da177e4 LT |
3434 | switch (brdp->brdtype) { |
3435 | case BRD_ECP: | |
3436 | case BRD_ECPE: | |
3437 | case BRD_ECPMC: | |
3438 | case BRD_ECPPCI: | |
8f8f5a58 | 3439 | retval = stli_initecp(brdp); |
1da177e4 LT |
3440 | break; |
3441 | case BRD_ONBOARD: | |
3442 | case BRD_ONBOARDE: | |
3443 | case BRD_ONBOARD2: | |
1da177e4 | 3444 | case BRD_BRUMBY4: |
1da177e4 | 3445 | case BRD_STALLION: |
8f8f5a58 | 3446 | retval = stli_initonb(brdp); |
1da177e4 | 3447 | break; |
1da177e4 | 3448 | default: |
a6614999 | 3449 | printk(KERN_ERR "istallion: board=%d is unknown board " |
1da177e4 | 3450 | "type=%d\n", brdp->brdnr, brdp->brdtype); |
8f8f5a58 | 3451 | retval = -ENODEV; |
1da177e4 LT |
3452 | } |
3453 | ||
8f8f5a58 JS |
3454 | if (retval) |
3455 | return retval; | |
1da177e4 LT |
3456 | |
3457 | stli_initports(brdp); | |
a6614999 | 3458 | printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x " |
1da177e4 LT |
3459 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], |
3460 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, | |
3461 | brdp->nrpanels, brdp->nrports); | |
4ac4360b | 3462 | return 0; |
1da177e4 LT |
3463 | } |
3464 | ||
a00f33f3 | 3465 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3466 | /*****************************************************************************/ |
3467 | ||
3468 | /* | |
3469 | * Probe around trying to find where the EISA boards shared memory | |
3470 | * might be. This is a bit if hack, but it is the best we can do. | |
3471 | */ | |
3472 | ||
1f8ec435 | 3473 | static int stli_eisamemprobe(struct stlibrd *brdp) |
1da177e4 | 3474 | { |
4ac4360b AC |
3475 | cdkecpsig_t ecpsig, __iomem *ecpsigp; |
3476 | cdkonbsig_t onbsig, __iomem *onbsigp; | |
1da177e4 LT |
3477 | int i, foundit; |
3478 | ||
1da177e4 LT |
3479 | /* |
3480 | * First up we reset the board, to get it into a known state. There | |
3481 | * is only 2 board types here we need to worry about. Don;t use the | |
3482 | * standard board init routine here, it programs up the shared | |
3483 | * memory address, and we don't know it yet... | |
3484 | */ | |
3485 | if (brdp->brdtype == BRD_ECPE) { | |
3486 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
3487 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3488 | udelay(10); | |
3489 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3490 | udelay(500); | |
3491 | stli_ecpeienable(brdp); | |
3492 | } else if (brdp->brdtype == BRD_ONBOARDE) { | |
3493 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
3494 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3495 | udelay(10); | |
3496 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3497 | mdelay(100); | |
3498 | outb(0x1, brdp->iobase); | |
3499 | mdelay(1); | |
3500 | stli_onbeenable(brdp); | |
3501 | } else { | |
4ac4360b | 3502 | return -ENODEV; |
1da177e4 LT |
3503 | } |
3504 | ||
3505 | foundit = 0; | |
3506 | brdp->memsize = ECP_MEMSIZE; | |
3507 | ||
3508 | /* | |
3509 | * Board shared memory is enabled, so now we have a poke around and | |
3510 | * see if we can find it. | |
3511 | */ | |
3512 | for (i = 0; (i < stli_eisamempsize); i++) { | |
3513 | brdp->memaddr = stli_eisamemprobeaddrs[i]; | |
24cb2335 | 3514 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
4ac4360b | 3515 | if (brdp->membase == NULL) |
1da177e4 LT |
3516 | continue; |
3517 | ||
3518 | if (brdp->brdtype == BRD_ECPE) { | |
29756fa3 | 3519 | ecpsigp = stli_ecpeigetmemptr(brdp, |
1da177e4 | 3520 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3521 | memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); |
3522 | if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) | |
1da177e4 LT |
3523 | foundit = 1; |
3524 | } else { | |
4ac4360b | 3525 | onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, |
1da177e4 | 3526 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3527 | memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); |
3528 | if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && | |
3529 | (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && | |
3530 | (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && | |
3531 | (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) | |
1da177e4 LT |
3532 | foundit = 1; |
3533 | } | |
3534 | ||
3535 | iounmap(brdp->membase); | |
3536 | if (foundit) | |
3537 | break; | |
3538 | } | |
3539 | ||
3540 | /* | |
3541 | * Regardless of whether we found the shared memory or not we must | |
3542 | * disable the region. After that return success or failure. | |
3543 | */ | |
3544 | if (brdp->brdtype == BRD_ECPE) | |
3545 | stli_ecpeidisable(brdp); | |
3546 | else | |
3547 | stli_onbedisable(brdp); | |
3548 | ||
3549 | if (! foundit) { | |
3550 | brdp->memaddr = 0; | |
3551 | brdp->membase = NULL; | |
a6614999 | 3552 | printk(KERN_ERR "istallion: failed to probe shared memory " |
1da177e4 LT |
3553 | "region for %s in EISA slot=%d\n", |
3554 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); | |
4ac4360b | 3555 | return -ENODEV; |
1da177e4 | 3556 | } |
4ac4360b | 3557 | return 0; |
1da177e4 | 3558 | } |
a00f33f3 | 3559 | #endif |
1da177e4 LT |
3560 | |
3561 | static int stli_getbrdnr(void) | |
3562 | { | |
1328d737 | 3563 | unsigned int i; |
1da177e4 LT |
3564 | |
3565 | for (i = 0; i < STL_MAXBRDS; i++) { | |
3566 | if (!stli_brds[i]) { | |
3567 | if (i >= stli_nrbrds) | |
3568 | stli_nrbrds = i + 1; | |
3569 | return i; | |
3570 | } | |
3571 | } | |
3572 | return -1; | |
3573 | } | |
3574 | ||
a00f33f3 | 3575 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3576 | /*****************************************************************************/ |
3577 | ||
3578 | /* | |
3579 | * Probe around and try to find any EISA boards in system. The biggest | |
3580 | * problem here is finding out what memory address is associated with | |
3581 | * an EISA board after it is found. The registers of the ECPE and | |
3582 | * ONboardE are not readable - so we can't read them from there. We | |
3583 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't | |
3584 | * actually have any way to find out the real value. The best we can | |
3585 | * do is go probing around in the usual places hoping we can find it. | |
3586 | */ | |
3587 | ||
6005e3eb | 3588 | static int __init stli_findeisabrds(void) |
1da177e4 | 3589 | { |
1f8ec435 | 3590 | struct stlibrd *brdp; |
1328d737 | 3591 | unsigned int iobase, eid, i; |
8f8f5a58 | 3592 | int brdnr, found = 0; |
1da177e4 LT |
3593 | |
3594 | /* | |
4ac4360b | 3595 | * Firstly check if this is an EISA system. If this is not an EISA system then |
1da177e4 LT |
3596 | * don't bother going any further! |
3597 | */ | |
4ac4360b AC |
3598 | if (EISA_bus) |
3599 | return 0; | |
1da177e4 LT |
3600 | |
3601 | /* | |
3602 | * Looks like an EISA system, so go searching for EISA boards. | |
3603 | */ | |
3604 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { | |
3605 | outb(0xff, (iobase + 0xc80)); | |
3606 | eid = inb(iobase + 0xc80); | |
3607 | eid |= inb(iobase + 0xc81) << 8; | |
3608 | if (eid != STL_EISAID) | |
3609 | continue; | |
3610 | ||
3611 | /* | |
3612 | * We have found a board. Need to check if this board was | |
3613 | * statically configured already (just in case!). | |
3614 | */ | |
3615 | for (i = 0; (i < STL_MAXBRDS); i++) { | |
3616 | brdp = stli_brds[i]; | |
4ac4360b | 3617 | if (brdp == NULL) |
1da177e4 LT |
3618 | continue; |
3619 | if (brdp->iobase == iobase) | |
3620 | break; | |
3621 | } | |
3622 | if (i < STL_MAXBRDS) | |
3623 | continue; | |
3624 | ||
3625 | /* | |
3626 | * We have found a Stallion board and it is not configured already. | |
3627 | * Allocate a board structure and initialize it. | |
3628 | */ | |
4ac4360b | 3629 | if ((brdp = stli_allocbrd()) == NULL) |
8f8f5a58 | 3630 | return found ? : -ENOMEM; |
1328d737 JS |
3631 | brdnr = stli_getbrdnr(); |
3632 | if (brdnr < 0) | |
8f8f5a58 | 3633 | return found ? : -ENOMEM; |
1328d737 | 3634 | brdp->brdnr = (unsigned int)brdnr; |
1da177e4 LT |
3635 | eid = inb(iobase + 0xc82); |
3636 | if (eid == ECP_EISAID) | |
3637 | brdp->brdtype = BRD_ECPE; | |
3638 | else if (eid == ONB_EISAID) | |
3639 | brdp->brdtype = BRD_ONBOARDE; | |
3640 | else | |
3641 | brdp->brdtype = BRD_UNKNOWN; | |
3642 | brdp->iobase = iobase; | |
3643 | outb(0x1, (iobase + 0xc84)); | |
3644 | if (stli_eisamemprobe(brdp)) | |
3645 | outb(0, (iobase + 0xc84)); | |
8f8f5a58 JS |
3646 | if (stli_brdinit(brdp) < 0) { |
3647 | kfree(brdp); | |
3648 | continue; | |
3649 | } | |
3650 | ||
b103b5cf | 3651 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3652 | found++; |
ec3dde57 JS |
3653 | |
3654 | for (i = 0; i < brdp->nrports; i++) | |
3655 | tty_register_device(stli_serial, | |
3656 | brdp->brdnr * STL_MAXPORTS + i, NULL); | |
1da177e4 LT |
3657 | } |
3658 | ||
8f8f5a58 | 3659 | return found; |
1da177e4 | 3660 | } |
a00f33f3 JS |
3661 | #else |
3662 | static inline int stli_findeisabrds(void) { return 0; } | |
3663 | #endif | |
1da177e4 LT |
3664 | |
3665 | /*****************************************************************************/ | |
3666 | ||
3667 | /* | |
3668 | * Find the next available board number that is free. | |
3669 | */ | |
3670 | ||
3671 | /*****************************************************************************/ | |
3672 | ||
1da177e4 LT |
3673 | /* |
3674 | * We have a Stallion board. Allocate a board structure and | |
3675 | * initialize it. Read its IO and MEMORY resources from PCI | |
3676 | * configuration space. | |
3677 | */ | |
3678 | ||
845bead4 JS |
3679 | static int __devinit stli_pciprobe(struct pci_dev *pdev, |
3680 | const struct pci_device_id *ent) | |
1da177e4 | 3681 | { |
1f8ec435 | 3682 | struct stlibrd *brdp; |
ec3dde57 | 3683 | unsigned int i; |
1328d737 | 3684 | int brdnr, retval = -EIO; |
845bead4 JS |
3685 | |
3686 | retval = pci_enable_device(pdev); | |
3687 | if (retval) | |
3688 | goto err; | |
3689 | brdp = stli_allocbrd(); | |
3690 | if (brdp == NULL) { | |
3691 | retval = -ENOMEM; | |
3692 | goto err; | |
3693 | } | |
b103b5cf | 3694 | mutex_lock(&stli_brdslock); |
1328d737 | 3695 | brdnr = stli_getbrdnr(); |
b103b5cf | 3696 | if (brdnr < 0) { |
a6614999 | 3697 | printk(KERN_INFO "istallion: too many boards found, " |
1da177e4 | 3698 | "maximum supported %d\n", STL_MAXBRDS); |
b103b5cf | 3699 | mutex_unlock(&stli_brdslock); |
845bead4 JS |
3700 | retval = -EIO; |
3701 | goto err_fr; | |
1da177e4 | 3702 | } |
1328d737 | 3703 | brdp->brdnr = (unsigned int)brdnr; |
b103b5cf JS |
3704 | stli_brds[brdp->brdnr] = brdp; |
3705 | mutex_unlock(&stli_brdslock); | |
845bead4 | 3706 | brdp->brdtype = BRD_ECPPCI; |
1da177e4 LT |
3707 | /* |
3708 | * We have all resources from the board, so lets setup the actual | |
3709 | * board structure now. | |
3710 | */ | |
845bead4 JS |
3711 | brdp->iobase = pci_resource_start(pdev, 3); |
3712 | brdp->memaddr = pci_resource_start(pdev, 2); | |
3713 | retval = stli_brdinit(brdp); | |
3714 | if (retval) | |
b103b5cf | 3715 | goto err_null; |
845bead4 | 3716 | |
8a1e803d | 3717 | set_bit(BST_PROBED, &brdp->state); |
845bead4 | 3718 | pci_set_drvdata(pdev, brdp); |
1da177e4 | 3719 | |
140e92ab JS |
3720 | EBRDENABLE(brdp); |
3721 | brdp->enable = NULL; | |
3722 | brdp->disable = NULL; | |
3723 | ||
ec3dde57 JS |
3724 | for (i = 0; i < brdp->nrports; i++) |
3725 | tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i, | |
3726 | &pdev->dev); | |
3727 | ||
4ac4360b | 3728 | return 0; |
b103b5cf JS |
3729 | err_null: |
3730 | stli_brds[brdp->brdnr] = NULL; | |
845bead4 JS |
3731 | err_fr: |
3732 | kfree(brdp); | |
3733 | err: | |
3734 | return retval; | |
1da177e4 LT |
3735 | } |
3736 | ||
0b9ce5a2 | 3737 | static void __devexit stli_pciremove(struct pci_dev *pdev) |
845bead4 | 3738 | { |
1f8ec435 | 3739 | struct stlibrd *brdp = pci_get_drvdata(pdev); |
1da177e4 | 3740 | |
845bead4 | 3741 | stli_cleanup_ports(brdp); |
1da177e4 | 3742 | |
845bead4 JS |
3743 | iounmap(brdp->membase); |
3744 | if (brdp->iosize > 0) | |
3745 | release_region(brdp->iobase, brdp->iosize); | |
1da177e4 | 3746 | |
845bead4 JS |
3747 | stli_brds[brdp->brdnr] = NULL; |
3748 | kfree(brdp); | |
1da177e4 LT |
3749 | } |
3750 | ||
845bead4 JS |
3751 | static struct pci_driver stli_pcidriver = { |
3752 | .name = "istallion", | |
3753 | .id_table = istallion_pci_tbl, | |
3754 | .probe = stli_pciprobe, | |
3755 | .remove = __devexit_p(stli_pciremove) | |
3756 | }; | |
1da177e4 LT |
3757 | /*****************************************************************************/ |
3758 | ||
3759 | /* | |
3760 | * Allocate a new board structure. Fill out the basic info in it. | |
3761 | */ | |
3762 | ||
1f8ec435 | 3763 | static struct stlibrd *stli_allocbrd(void) |
1da177e4 | 3764 | { |
1f8ec435 | 3765 | struct stlibrd *brdp; |
1da177e4 | 3766 | |
1f8ec435 | 3767 | brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL); |
b0b4ed72 | 3768 | if (!brdp) { |
a6614999 | 3769 | printk(KERN_ERR "istallion: failed to allocate memory " |
1f8ec435 | 3770 | "(size=%Zd)\n", sizeof(struct stlibrd)); |
b0b4ed72 | 3771 | return NULL; |
1da177e4 | 3772 | } |
1da177e4 | 3773 | brdp->magic = STLI_BOARDMAGIC; |
4ac4360b | 3774 | return brdp; |
1da177e4 LT |
3775 | } |
3776 | ||
3777 | /*****************************************************************************/ | |
3778 | ||
3779 | /* | |
3780 | * Scan through all the boards in the configuration and see what we | |
3781 | * can find. | |
3782 | */ | |
3783 | ||
6005e3eb | 3784 | static int __init stli_initbrds(void) |
1da177e4 | 3785 | { |
1f8ec435 JS |
3786 | struct stlibrd *brdp, *nxtbrdp; |
3787 | struct stlconf conf; | |
8f8f5a58 | 3788 | unsigned int i, j, found = 0; |
1328d737 | 3789 | int retval; |
1da177e4 | 3790 | |
a3f8d9d5 JS |
3791 | for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp); |
3792 | stli_nrbrds++) { | |
3793 | memset(&conf, 0, sizeof(conf)); | |
3794 | if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0) | |
3795 | continue; | |
4ac4360b | 3796 | if ((brdp = stli_allocbrd()) == NULL) |
a3f8d9d5 JS |
3797 | continue; |
3798 | brdp->brdnr = stli_nrbrds; | |
3799 | brdp->brdtype = conf.brdtype; | |
3800 | brdp->iobase = conf.ioaddr1; | |
3801 | brdp->memaddr = conf.memaddr; | |
8f8f5a58 JS |
3802 | if (stli_brdinit(brdp) < 0) { |
3803 | kfree(brdp); | |
3804 | continue; | |
3805 | } | |
b103b5cf | 3806 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3807 | found++; |
ec3dde57 JS |
3808 | |
3809 | for (i = 0; i < brdp->nrports; i++) | |
3810 | tty_register_device(stli_serial, | |
3811 | brdp->brdnr * STL_MAXPORTS + i, NULL); | |
1da177e4 LT |
3812 | } |
3813 | ||
8f8f5a58 JS |
3814 | retval = stli_findeisabrds(); |
3815 | if (retval > 0) | |
3816 | found += retval; | |
845bead4 | 3817 | |
1da177e4 LT |
3818 | /* |
3819 | * All found boards are initialized. Now for a little optimization, if | |
3820 | * no boards are sharing the "shared memory" regions then we can just | |
3821 | * leave them all enabled. This is in fact the usual case. | |
3822 | */ | |
3823 | stli_shared = 0; | |
3824 | if (stli_nrbrds > 1) { | |
3825 | for (i = 0; (i < stli_nrbrds); i++) { | |
3826 | brdp = stli_brds[i]; | |
4ac4360b | 3827 | if (brdp == NULL) |
1da177e4 LT |
3828 | continue; |
3829 | for (j = i + 1; (j < stli_nrbrds); j++) { | |
3830 | nxtbrdp = stli_brds[j]; | |
4ac4360b | 3831 | if (nxtbrdp == NULL) |
1da177e4 LT |
3832 | continue; |
3833 | if ((brdp->membase >= nxtbrdp->membase) && | |
3834 | (brdp->membase <= (nxtbrdp->membase + | |
3835 | nxtbrdp->memsize - 1))) { | |
3836 | stli_shared++; | |
3837 | break; | |
3838 | } | |
3839 | } | |
3840 | } | |
3841 | } | |
3842 | ||
3843 | if (stli_shared == 0) { | |
3844 | for (i = 0; (i < stli_nrbrds); i++) { | |
3845 | brdp = stli_brds[i]; | |
4ac4360b | 3846 | if (brdp == NULL) |
1da177e4 | 3847 | continue; |
8a1e803d | 3848 | if (test_bit(BST_FOUND, &brdp->state)) { |
1da177e4 LT |
3849 | EBRDENABLE(brdp); |
3850 | brdp->enable = NULL; | |
3851 | brdp->disable = NULL; | |
3852 | } | |
3853 | } | |
3854 | } | |
3855 | ||
140e92ab JS |
3856 | retval = pci_register_driver(&stli_pcidriver); |
3857 | if (retval && found == 0) { | |
3858 | printk(KERN_ERR "Neither isa nor eisa cards found nor pci " | |
3859 | "driver can be registered!\n"); | |
3860 | goto err; | |
3861 | } | |
3862 | ||
4ac4360b | 3863 | return 0; |
8f8f5a58 JS |
3864 | err: |
3865 | return retval; | |
1da177e4 LT |
3866 | } |
3867 | ||
3868 | /*****************************************************************************/ | |
3869 | ||
3870 | /* | |
3871 | * Code to handle an "staliomem" read operation. This device is the | |
3872 | * contents of the board shared memory. It is used for down loading | |
3873 | * the slave image (and debugging :-) | |
3874 | */ | |
3875 | ||
3876 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) | |
3877 | { | |
4ac4360b | 3878 | unsigned long flags; |
29756fa3 | 3879 | void __iomem *memptr; |
1f8ec435 | 3880 | struct stlibrd *brdp; |
1328d737 JS |
3881 | unsigned int brdnr; |
3882 | int size, n; | |
4ac4360b AC |
3883 | void *p; |
3884 | loff_t off = *offp; | |
1da177e4 | 3885 | |
a7113a96 | 3886 | brdnr = iminor(fp->f_path.dentry->d_inode); |
1da177e4 | 3887 | if (brdnr >= stli_nrbrds) |
4ac4360b | 3888 | return -ENODEV; |
1da177e4 | 3889 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
3890 | if (brdp == NULL) |
3891 | return -ENODEV; | |
1da177e4 | 3892 | if (brdp->state == 0) |
4ac4360b AC |
3893 | return -ENODEV; |
3894 | if (off >= brdp->memsize || off + count < off) | |
3895 | return 0; | |
1da177e4 | 3896 | |
a3f8d9d5 | 3897 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
3898 | |
3899 | /* | |
3900 | * Copy the data a page at a time | |
3901 | */ | |
3902 | ||
3903 | p = (void *)__get_free_page(GFP_KERNEL); | |
3904 | if(p == NULL) | |
3905 | return -ENOMEM; | |
1da177e4 | 3906 | |
1da177e4 | 3907 | while (size > 0) { |
4ac4360b AC |
3908 | spin_lock_irqsave(&brd_lock, flags); |
3909 | EBRDENABLE(brdp); | |
29756fa3 | 3910 | memptr = EBRDGETMEMPTR(brdp, off); |
a3f8d9d5 JS |
3911 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
3912 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
3913 | memcpy_fromio(p, memptr, n); |
3914 | EBRDDISABLE(brdp); | |
3915 | spin_unlock_irqrestore(&brd_lock, flags); | |
3916 | if (copy_to_user(buf, p, n)) { | |
1da177e4 LT |
3917 | count = -EFAULT; |
3918 | goto out; | |
3919 | } | |
4ac4360b | 3920 | off += n; |
1da177e4 LT |
3921 | buf += n; |
3922 | size -= n; | |
3923 | } | |
3924 | out: | |
4ac4360b AC |
3925 | *offp = off; |
3926 | free_page((unsigned long)p); | |
3927 | return count; | |
1da177e4 LT |
3928 | } |
3929 | ||
3930 | /*****************************************************************************/ | |
3931 | ||
3932 | /* | |
3933 | * Code to handle an "staliomem" write operation. This device is the | |
3934 | * contents of the board shared memory. It is used for down loading | |
3935 | * the slave image (and debugging :-) | |
4ac4360b AC |
3936 | * |
3937 | * FIXME: copy under lock | |
1da177e4 LT |
3938 | */ |
3939 | ||
3940 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) | |
3941 | { | |
4ac4360b | 3942 | unsigned long flags; |
29756fa3 | 3943 | void __iomem *memptr; |
1f8ec435 | 3944 | struct stlibrd *brdp; |
4ac4360b | 3945 | char __user *chbuf; |
1328d737 JS |
3946 | unsigned int brdnr; |
3947 | int size, n; | |
4ac4360b AC |
3948 | void *p; |
3949 | loff_t off = *offp; | |
1da177e4 | 3950 | |
a7113a96 | 3951 | brdnr = iminor(fp->f_path.dentry->d_inode); |
4ac4360b | 3952 | |
1da177e4 | 3953 | if (brdnr >= stli_nrbrds) |
4ac4360b | 3954 | return -ENODEV; |
1da177e4 | 3955 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
3956 | if (brdp == NULL) |
3957 | return -ENODEV; | |
1da177e4 | 3958 | if (brdp->state == 0) |
4ac4360b AC |
3959 | return -ENODEV; |
3960 | if (off >= brdp->memsize || off + count < off) | |
3961 | return 0; | |
1da177e4 LT |
3962 | |
3963 | chbuf = (char __user *) buf; | |
a3f8d9d5 | 3964 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
3965 | |
3966 | /* | |
3967 | * Copy the data a page at a time | |
3968 | */ | |
3969 | ||
3970 | p = (void *)__get_free_page(GFP_KERNEL); | |
3971 | if(p == NULL) | |
3972 | return -ENOMEM; | |
1da177e4 | 3973 | |
1da177e4 | 3974 | while (size > 0) { |
a3f8d9d5 JS |
3975 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
3976 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
3977 | if (copy_from_user(p, chbuf, n)) { |
3978 | if (count == 0) | |
3979 | count = -EFAULT; | |
1da177e4 LT |
3980 | goto out; |
3981 | } | |
4ac4360b AC |
3982 | spin_lock_irqsave(&brd_lock, flags); |
3983 | EBRDENABLE(brdp); | |
29756fa3 | 3984 | memptr = EBRDGETMEMPTR(brdp, off); |
4ac4360b AC |
3985 | memcpy_toio(memptr, p, n); |
3986 | EBRDDISABLE(brdp); | |
3987 | spin_unlock_irqrestore(&brd_lock, flags); | |
3988 | off += n; | |
1da177e4 LT |
3989 | chbuf += n; |
3990 | size -= n; | |
3991 | } | |
3992 | out: | |
4ac4360b AC |
3993 | free_page((unsigned long) p); |
3994 | *offp = off; | |
3995 | return count; | |
1da177e4 LT |
3996 | } |
3997 | ||
3998 | /*****************************************************************************/ | |
3999 | ||
4000 | /* | |
4001 | * Return the board stats structure to user app. | |
4002 | */ | |
4003 | ||
4004 | static int stli_getbrdstats(combrd_t __user *bp) | |
4005 | { | |
1f8ec435 | 4006 | struct stlibrd *brdp; |
1328d737 | 4007 | unsigned int i; |
1da177e4 LT |
4008 | |
4009 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) | |
4010 | return -EFAULT; | |
4011 | if (stli_brdstats.brd >= STL_MAXBRDS) | |
4ac4360b | 4012 | return -ENODEV; |
1da177e4 | 4013 | brdp = stli_brds[stli_brdstats.brd]; |
4ac4360b AC |
4014 | if (brdp == NULL) |
4015 | return -ENODEV; | |
1da177e4 LT |
4016 | |
4017 | memset(&stli_brdstats, 0, sizeof(combrd_t)); | |
b4eda9cb | 4018 | |
1da177e4 LT |
4019 | stli_brdstats.brd = brdp->brdnr; |
4020 | stli_brdstats.type = brdp->brdtype; | |
4021 | stli_brdstats.hwid = 0; | |
4022 | stli_brdstats.state = brdp->state; | |
4023 | stli_brdstats.ioaddr = brdp->iobase; | |
4024 | stli_brdstats.memaddr = brdp->memaddr; | |
4025 | stli_brdstats.nrpanels = brdp->nrpanels; | |
4026 | stli_brdstats.nrports = brdp->nrports; | |
4027 | for (i = 0; (i < brdp->nrpanels); i++) { | |
4028 | stli_brdstats.panels[i].panel = i; | |
4029 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; | |
4030 | stli_brdstats.panels[i].nrports = brdp->panels[i]; | |
4031 | } | |
4032 | ||
4033 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) | |
4034 | return -EFAULT; | |
4ac4360b | 4035 | return 0; |
1da177e4 LT |
4036 | } |
4037 | ||
4038 | /*****************************************************************************/ | |
4039 | ||
4040 | /* | |
4041 | * Resolve the referenced port number into a port struct pointer. | |
4042 | */ | |
4043 | ||
1328d737 JS |
4044 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, |
4045 | unsigned int portnr) | |
1da177e4 | 4046 | { |
1f8ec435 | 4047 | struct stlibrd *brdp; |
1328d737 | 4048 | unsigned int i; |
1da177e4 | 4049 | |
1328d737 | 4050 | if (brdnr >= STL_MAXBRDS) |
4ac4360b | 4051 | return NULL; |
1da177e4 | 4052 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4053 | if (brdp == NULL) |
4054 | return NULL; | |
1da177e4 LT |
4055 | for (i = 0; (i < panelnr); i++) |
4056 | portnr += brdp->panels[i]; | |
1328d737 | 4057 | if (portnr >= brdp->nrports) |
4ac4360b AC |
4058 | return NULL; |
4059 | return brdp->ports[portnr]; | |
1da177e4 LT |
4060 | } |
4061 | ||
4062 | /*****************************************************************************/ | |
4063 | ||
4064 | /* | |
4065 | * Return the port stats structure to user app. A NULL port struct | |
4066 | * pointer passed in means that we need to find out from the app | |
4067 | * what port to get stats for (used through board control device). | |
4068 | */ | |
4069 | ||
d18a750f | 4070 | static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp) |
1da177e4 LT |
4071 | { |
4072 | unsigned long flags; | |
1f8ec435 | 4073 | struct stlibrd *brdp; |
1da177e4 LT |
4074 | int rc; |
4075 | ||
4076 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4077 | ||
4ac4360b AC |
4078 | if (portp == NULL) |
4079 | return -ENODEV; | |
1da177e4 | 4080 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
4081 | if (brdp == NULL) |
4082 | return -ENODEV; | |
1da177e4 | 4083 | |
b4eda9cb | 4084 | mutex_lock(&portp->port.mutex); |
8a1e803d | 4085 | if (test_bit(BST_STARTED, &brdp->state)) { |
1da177e4 | 4086 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, |
b4eda9cb AC |
4087 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) { |
4088 | mutex_unlock(&portp->port.mutex); | |
4ac4360b | 4089 | return rc; |
b4eda9cb | 4090 | } |
1da177e4 LT |
4091 | } else { |
4092 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); | |
4093 | } | |
4094 | ||
4095 | stli_comstats.brd = portp->brdnr; | |
4096 | stli_comstats.panel = portp->panelnr; | |
4097 | stli_comstats.port = portp->portnr; | |
4098 | stli_comstats.state = portp->state; | |
42a77a1b | 4099 | stli_comstats.flags = portp->port.flags; |
1da177e4 | 4100 | |
4ac4360b | 4101 | spin_lock_irqsave(&brd_lock, flags); |
d18a750f AC |
4102 | if (tty != NULL) { |
4103 | if (portp->port.tty == tty) { | |
4104 | stli_comstats.ttystate = tty->flags; | |
4ac4360b | 4105 | stli_comstats.rxbuffered = -1; |
d18a750f AC |
4106 | if (tty->termios != NULL) { |
4107 | stli_comstats.cflags = tty->termios->c_cflag; | |
4108 | stli_comstats.iflags = tty->termios->c_iflag; | |
4109 | stli_comstats.oflags = tty->termios->c_oflag; | |
4110 | stli_comstats.lflags = tty->termios->c_lflag; | |
1da177e4 LT |
4111 | } |
4112 | } | |
4113 | } | |
4ac4360b | 4114 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
4115 | |
4116 | stli_comstats.txtotal = stli_cdkstats.txchars; | |
4117 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; | |
4118 | stli_comstats.txbuffered = stli_cdkstats.txringq; | |
4119 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; | |
4120 | stli_comstats.rxoverrun = stli_cdkstats.overruns; | |
4121 | stli_comstats.rxparity = stli_cdkstats.parity; | |
4122 | stli_comstats.rxframing = stli_cdkstats.framing; | |
4123 | stli_comstats.rxlost = stli_cdkstats.ringover; | |
4124 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; | |
4125 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; | |
4126 | stli_comstats.txxon = stli_cdkstats.txstart; | |
4127 | stli_comstats.txxoff = stli_cdkstats.txstop; | |
4128 | stli_comstats.rxxon = stli_cdkstats.rxstart; | |
4129 | stli_comstats.rxxoff = stli_cdkstats.rxstop; | |
4130 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; | |
4131 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; | |
4132 | stli_comstats.modem = stli_cdkstats.dcdcnt; | |
4133 | stli_comstats.hwid = stli_cdkstats.hwid; | |
4134 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); | |
b4eda9cb | 4135 | mutex_unlock(&portp->port.mutex); |
1da177e4 | 4136 | |
4ac4360b | 4137 | return 0; |
1da177e4 LT |
4138 | } |
4139 | ||
4140 | /*****************************************************************************/ | |
4141 | ||
4142 | /* | |
4143 | * Return the port stats structure to user app. A NULL port struct | |
4144 | * pointer passed in means that we need to find out from the app | |
4145 | * what port to get stats for (used through board control device). | |
4146 | */ | |
4147 | ||
d18a750f AC |
4148 | static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, |
4149 | comstats_t __user *cp) | |
1da177e4 | 4150 | { |
1f8ec435 | 4151 | struct stlibrd *brdp; |
4ac4360b | 4152 | int rc; |
1da177e4 LT |
4153 | |
4154 | if (!portp) { | |
4155 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4156 | return -EFAULT; | |
4157 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4158 | stli_comstats.port); | |
4159 | if (!portp) | |
4160 | return -ENODEV; | |
4161 | } | |
4162 | ||
4163 | brdp = stli_brds[portp->brdnr]; | |
4164 | if (!brdp) | |
4165 | return -ENODEV; | |
4166 | ||
d18a750f | 4167 | if ((rc = stli_portcmdstats(tty, portp)) < 0) |
1da177e4 LT |
4168 | return rc; |
4169 | ||
4170 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? | |
4171 | -EFAULT : 0; | |
4172 | } | |
4173 | ||
4174 | /*****************************************************************************/ | |
4175 | ||
4176 | /* | |
4177 | * Clear the port stats structure. We also return it zeroed out... | |
4178 | */ | |
4179 | ||
1f8ec435 | 4180 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp) |
1da177e4 | 4181 | { |
1f8ec435 | 4182 | struct stlibrd *brdp; |
4ac4360b | 4183 | int rc; |
1da177e4 LT |
4184 | |
4185 | if (!portp) { | |
4186 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4187 | return -EFAULT; | |
4188 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4189 | stli_comstats.port); | |
4190 | if (!portp) | |
4191 | return -ENODEV; | |
4192 | } | |
4193 | ||
4194 | brdp = stli_brds[portp->brdnr]; | |
4195 | if (!brdp) | |
4196 | return -ENODEV; | |
4197 | ||
b4eda9cb AC |
4198 | mutex_lock(&portp->port.mutex); |
4199 | ||
8a1e803d | 4200 | if (test_bit(BST_STARTED, &brdp->state)) { |
b4eda9cb AC |
4201 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) { |
4202 | mutex_unlock(&portp->port.mutex); | |
1da177e4 | 4203 | return rc; |
b4eda9cb | 4204 | } |
1da177e4 LT |
4205 | } |
4206 | ||
4207 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4208 | stli_comstats.brd = portp->brdnr; | |
4209 | stli_comstats.panel = portp->panelnr; | |
4210 | stli_comstats.port = portp->portnr; | |
b4eda9cb | 4211 | mutex_unlock(&portp->port.mutex); |
1da177e4 LT |
4212 | |
4213 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) | |
4214 | return -EFAULT; | |
4215 | return 0; | |
4216 | } | |
4217 | ||
4218 | /*****************************************************************************/ | |
4219 | ||
4220 | /* | |
4221 | * Return the entire driver ports structure to a user app. | |
4222 | */ | |
4223 | ||
1f8ec435 | 4224 | static int stli_getportstruct(struct stliport __user *arg) |
1da177e4 | 4225 | { |
1328d737 | 4226 | struct stliport stli_dummyport; |
1f8ec435 | 4227 | struct stliport *portp; |
1da177e4 | 4228 | |
1f8ec435 | 4229 | if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport))) |
1da177e4 LT |
4230 | return -EFAULT; |
4231 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, | |
4232 | stli_dummyport.portnr); | |
4233 | if (!portp) | |
4234 | return -ENODEV; | |
1f8ec435 | 4235 | if (copy_to_user(arg, portp, sizeof(struct stliport))) |
1da177e4 LT |
4236 | return -EFAULT; |
4237 | return 0; | |
4238 | } | |
4239 | ||
4240 | /*****************************************************************************/ | |
4241 | ||
4242 | /* | |
4243 | * Return the entire driver board structure to a user app. | |
4244 | */ | |
4245 | ||
1f8ec435 | 4246 | static int stli_getbrdstruct(struct stlibrd __user *arg) |
1da177e4 | 4247 | { |
1328d737 | 4248 | struct stlibrd stli_dummybrd; |
1f8ec435 | 4249 | struct stlibrd *brdp; |
1da177e4 | 4250 | |
1f8ec435 | 4251 | if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd))) |
1da177e4 | 4252 | return -EFAULT; |
1328d737 | 4253 | if (stli_dummybrd.brdnr >= STL_MAXBRDS) |
1da177e4 LT |
4254 | return -ENODEV; |
4255 | brdp = stli_brds[stli_dummybrd.brdnr]; | |
4256 | if (!brdp) | |
4257 | return -ENODEV; | |
1f8ec435 | 4258 | if (copy_to_user(arg, brdp, sizeof(struct stlibrd))) |
1da177e4 LT |
4259 | return -EFAULT; |
4260 | return 0; | |
4261 | } | |
4262 | ||
4263 | /*****************************************************************************/ | |
4264 | ||
4265 | /* | |
4266 | * The "staliomem" device is also required to do some special operations on | |
4267 | * the board. We need to be able to send an interrupt to the board, | |
4268 | * reset it, and start/stop it. | |
4269 | */ | |
4270 | ||
62687538 | 4271 | static long stli_memioctl(struct file *fp, unsigned int cmd, unsigned long arg) |
1da177e4 | 4272 | { |
1f8ec435 | 4273 | struct stlibrd *brdp; |
4ac4360b | 4274 | int brdnr, rc, done; |
1da177e4 LT |
4275 | void __user *argp = (void __user *)arg; |
4276 | ||
1da177e4 LT |
4277 | /* |
4278 | * First up handle the board independent ioctls. | |
4279 | */ | |
4280 | done = 0; | |
4281 | rc = 0; | |
4282 | ||
4283 | switch (cmd) { | |
4284 | case COM_GETPORTSTATS: | |
d18a750f | 4285 | rc = stli_getportstats(NULL, NULL, argp); |
1da177e4 LT |
4286 | done++; |
4287 | break; | |
4288 | case COM_CLRPORTSTATS: | |
4289 | rc = stli_clrportstats(NULL, argp); | |
4290 | done++; | |
4291 | break; | |
4292 | case COM_GETBRDSTATS: | |
4293 | rc = stli_getbrdstats(argp); | |
4294 | done++; | |
4295 | break; | |
4296 | case COM_READPORT: | |
4297 | rc = stli_getportstruct(argp); | |
4298 | done++; | |
4299 | break; | |
4300 | case COM_READBOARD: | |
4301 | rc = stli_getbrdstruct(argp); | |
4302 | done++; | |
4303 | break; | |
4304 | } | |
1da177e4 | 4305 | if (done) |
4ac4360b | 4306 | return rc; |
1da177e4 LT |
4307 | |
4308 | /* | |
4309 | * Now handle the board specific ioctls. These all depend on the | |
4310 | * minor number of the device they were called from. | |
4311 | */ | |
62687538 | 4312 | brdnr = iminor(fp->f_dentry->d_inode); |
1da177e4 | 4313 | if (brdnr >= STL_MAXBRDS) |
4ac4360b | 4314 | return -ENODEV; |
1da177e4 LT |
4315 | brdp = stli_brds[brdnr]; |
4316 | if (!brdp) | |
4ac4360b | 4317 | return -ENODEV; |
1da177e4 | 4318 | if (brdp->state == 0) |
4ac4360b | 4319 | return -ENODEV; |
1da177e4 LT |
4320 | |
4321 | switch (cmd) { | |
4322 | case STL_BINTR: | |
4323 | EBRDINTR(brdp); | |
4324 | break; | |
4325 | case STL_BSTART: | |
4326 | rc = stli_startbrd(brdp); | |
4327 | break; | |
4328 | case STL_BSTOP: | |
8a1e803d | 4329 | clear_bit(BST_STARTED, &brdp->state); |
1da177e4 LT |
4330 | break; |
4331 | case STL_BRESET: | |
8a1e803d | 4332 | clear_bit(BST_STARTED, &brdp->state); |
1da177e4 LT |
4333 | EBRDRESET(brdp); |
4334 | if (stli_shared == 0) { | |
4335 | if (brdp->reenable != NULL) | |
4336 | (* brdp->reenable)(brdp); | |
4337 | } | |
4338 | break; | |
4339 | default: | |
4340 | rc = -ENOIOCTLCMD; | |
4341 | break; | |
4342 | } | |
4ac4360b | 4343 | return rc; |
1da177e4 LT |
4344 | } |
4345 | ||
b68e31d0 | 4346 | static const struct tty_operations stli_ops = { |
1da177e4 LT |
4347 | .open = stli_open, |
4348 | .close = stli_close, | |
4349 | .write = stli_write, | |
4350 | .put_char = stli_putchar, | |
4351 | .flush_chars = stli_flushchars, | |
4352 | .write_room = stli_writeroom, | |
4353 | .chars_in_buffer = stli_charsinbuffer, | |
4354 | .ioctl = stli_ioctl, | |
4355 | .set_termios = stli_settermios, | |
4356 | .throttle = stli_throttle, | |
4357 | .unthrottle = stli_unthrottle, | |
4358 | .stop = stli_stop, | |
4359 | .start = stli_start, | |
4360 | .hangup = stli_hangup, | |
4361 | .flush_buffer = stli_flushbuffer, | |
4362 | .break_ctl = stli_breakctl, | |
4363 | .wait_until_sent = stli_waituntilsent, | |
4364 | .send_xchar = stli_sendxchar, | |
1da177e4 LT |
4365 | .tiocmget = stli_tiocmget, |
4366 | .tiocmset = stli_tiocmset, | |
5bd6de7d | 4367 | .proc_fops = &stli_proc_fops, |
1da177e4 LT |
4368 | }; |
4369 | ||
31f35939 AC |
4370 | static const struct tty_port_operations stli_port_ops = { |
4371 | .carrier_raised = stli_carrier_raised, | |
fcc8ac18 | 4372 | .dtr_rts = stli_dtr_rts, |
338818fd AC |
4373 | .activate = stli_activate, |
4374 | .shutdown = stli_shutdown, | |
31f35939 AC |
4375 | }; |
4376 | ||
1da177e4 | 4377 | /*****************************************************************************/ |
f1cc54f8 JS |
4378 | /* |
4379 | * Loadable module initialization stuff. | |
4380 | */ | |
1da177e4 | 4381 | |
f2362c94 JS |
4382 | static void istallion_cleanup_isa(void) |
4383 | { | |
4384 | struct stlibrd *brdp; | |
4385 | unsigned int j; | |
4386 | ||
4387 | for (j = 0; (j < stli_nrbrds); j++) { | |
8a1e803d AC |
4388 | if ((brdp = stli_brds[j]) == NULL || |
4389 | test_bit(BST_PROBED, &brdp->state)) | |
f2362c94 JS |
4390 | continue; |
4391 | ||
4392 | stli_cleanup_ports(brdp); | |
4393 | ||
4394 | iounmap(brdp->membase); | |
4395 | if (brdp->iosize > 0) | |
4396 | release_region(brdp->iobase, brdp->iosize); | |
4397 | kfree(brdp); | |
4398 | stli_brds[j] = NULL; | |
4399 | } | |
4400 | } | |
4401 | ||
f1cc54f8 | 4402 | static int __init istallion_module_init(void) |
1da177e4 | 4403 | { |
f2362c94 JS |
4404 | unsigned int i; |
4405 | int retval; | |
f1cc54f8 | 4406 | |
1da177e4 LT |
4407 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); |
4408 | ||
4ac4360b AC |
4409 | spin_lock_init(&stli_lock); |
4410 | spin_lock_init(&brd_lock); | |
4411 | ||
b0b4ed72 | 4412 | stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); |
f2362c94 | 4413 | if (!stli_txcookbuf) { |
a6614999 | 4414 | printk(KERN_ERR "istallion: failed to allocate memory " |
1da177e4 | 4415 | "(size=%d)\n", STLI_TXBUFSIZE); |
f2362c94 JS |
4416 | retval = -ENOMEM; |
4417 | goto err; | |
4418 | } | |
1da177e4 | 4419 | |
f2362c94 JS |
4420 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); |
4421 | if (!stli_serial) { | |
4422 | retval = -ENOMEM; | |
4423 | goto err_free; | |
4424 | } | |
1da177e4 | 4425 | |
1da177e4 LT |
4426 | stli_serial->owner = THIS_MODULE; |
4427 | stli_serial->driver_name = stli_drvname; | |
4428 | stli_serial->name = stli_serialname; | |
4429 | stli_serial->major = STL_SERIALMAJOR; | |
4430 | stli_serial->minor_start = 0; | |
4431 | stli_serial->type = TTY_DRIVER_TYPE_SERIAL; | |
4432 | stli_serial->subtype = SERIAL_TYPE_NORMAL; | |
4433 | stli_serial->init_termios = stli_deftermios; | |
ec3dde57 | 4434 | stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 LT |
4435 | tty_set_operations(stli_serial, &stli_ops); |
4436 | ||
f2362c94 JS |
4437 | retval = tty_register_driver(stli_serial); |
4438 | if (retval) { | |
a6614999 | 4439 | printk(KERN_ERR "istallion: failed to register serial driver\n"); |
f2362c94 JS |
4440 | goto err_ttyput; |
4441 | } | |
4442 | ||
4443 | retval = stli_initbrds(); | |
4444 | if (retval) | |
4445 | goto err_ttyunr; | |
4446 | ||
4447 | /* | |
4448 | * Set up a character driver for the shared memory region. We need this | |
4449 | * to down load the slave code image. Also it is a useful debugging tool. | |
4450 | */ | |
4451 | retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem); | |
4452 | if (retval) { | |
a6614999 | 4453 | printk(KERN_ERR "istallion: failed to register serial memory " |
f2362c94 JS |
4454 | "device\n"); |
4455 | goto err_deinit; | |
1da177e4 | 4456 | } |
f2362c94 JS |
4457 | |
4458 | istallion_class = class_create(THIS_MODULE, "staliomem"); | |
4459 | for (i = 0; i < 4; i++) | |
03457cd4 GKH |
4460 | device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), |
4461 | NULL, "staliomem%d", i); | |
f2362c94 | 4462 | |
4ac4360b | 4463 | return 0; |
f2362c94 JS |
4464 | err_deinit: |
4465 | pci_unregister_driver(&stli_pcidriver); | |
4466 | istallion_cleanup_isa(); | |
4467 | err_ttyunr: | |
4468 | tty_unregister_driver(stli_serial); | |
4469 | err_ttyput: | |
4470 | put_tty_driver(stli_serial); | |
4471 | err_free: | |
4472 | kfree(stli_txcookbuf); | |
4473 | err: | |
4474 | return retval; | |
1da177e4 LT |
4475 | } |
4476 | ||
4477 | /*****************************************************************************/ | |
f1cc54f8 JS |
4478 | |
4479 | static void __exit istallion_module_exit(void) | |
4480 | { | |
f1cc54f8 | 4481 | unsigned int j; |
f1cc54f8 JS |
4482 | |
4483 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, | |
4484 | stli_drvversion); | |
4485 | ||
f1cc54f8 JS |
4486 | if (stli_timeron) { |
4487 | stli_timeron = 0; | |
4488 | del_timer_sync(&stli_timerlist); | |
4489 | } | |
4490 | ||
f2362c94 JS |
4491 | unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); |
4492 | ||
f1cc54f8 | 4493 | for (j = 0; j < 4; j++) |
07c015e7 | 4494 | device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j)); |
f1cc54f8 | 4495 | class_destroy(istallion_class); |
f1cc54f8 | 4496 | |
f2362c94 JS |
4497 | pci_unregister_driver(&stli_pcidriver); |
4498 | istallion_cleanup_isa(); | |
f1cc54f8 | 4499 | |
f2362c94 JS |
4500 | tty_unregister_driver(stli_serial); |
4501 | put_tty_driver(stli_serial); | |
f1cc54f8 | 4502 | |
f2362c94 | 4503 | kfree(stli_txcookbuf); |
f1cc54f8 JS |
4504 | } |
4505 | ||
4506 | module_init(istallion_module_init); | |
4507 | module_exit(istallion_module_exit); |