Commit | Line | Data |
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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 | 23 | #include <linux/slab.h> |
405f5571 | 24 | #include <linux/smp_lock.h> |
1da177e4 LT |
25 | #include <linux/interrupt.h> |
26 | #include <linux/tty.h> | |
27 | #include <linux/tty_flip.h> | |
28 | #include <linux/serial.h> | |
5bd6de7d | 29 | #include <linux/seq_file.h> |
1da177e4 LT |
30 | #include <linux/cdk.h> |
31 | #include <linux/comstats.h> | |
32 | #include <linux/istallion.h> | |
33 | #include <linux/ioport.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/init.h> | |
1da177e4 LT |
36 | #include <linux/device.h> |
37 | #include <linux/wait.h> | |
4ac4360b | 38 | #include <linux/eisa.h> |
a3f8d9d5 | 39 | #include <linux/ctype.h> |
1da177e4 LT |
40 | |
41 | #include <asm/io.h> | |
42 | #include <asm/uaccess.h> | |
43 | ||
1da177e4 | 44 | #include <linux/pci.h> |
1da177e4 LT |
45 | |
46 | /*****************************************************************************/ | |
47 | ||
48 | /* | |
49 | * Define different board types. Not all of the following board types | |
50 | * are supported by this driver. But I will use the standard "assigned" | |
51 | * board numbers. Currently supported boards are abbreviated as: | |
52 | * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and | |
53 | * STAL = Stallion. | |
54 | */ | |
55 | #define BRD_UNKNOWN 0 | |
56 | #define BRD_STALLION 1 | |
57 | #define BRD_BRUMBY4 2 | |
58 | #define BRD_ONBOARD2 3 | |
59 | #define BRD_ONBOARD 4 | |
1da177e4 | 60 | #define BRD_ONBOARDE 7 |
1da177e4 LT |
61 | #define BRD_ECP 23 |
62 | #define BRD_ECPE 24 | |
63 | #define BRD_ECPMC 25 | |
1da177e4 LT |
64 | #define BRD_ECPPCI 29 |
65 | ||
66 | #define BRD_BRUMBY BRD_BRUMBY4 | |
67 | ||
68 | /* | |
69 | * Define a configuration structure to hold the board configuration. | |
70 | * Need to set this up in the code (for now) with the boards that are | |
71 | * to be configured into the system. This is what needs to be modified | |
72 | * when adding/removing/modifying boards. Each line entry in the | |
73 | * stli_brdconf[] array is a board. Each line contains io/irq/memory | |
74 | * ranges for that board (as well as what type of board it is). | |
75 | * Some examples: | |
76 | * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, | |
77 | * This line will configure an EasyConnection 8/64 at io address 2a0, | |
78 | * and shared memory address of cc000. Multiple EasyConnection 8/64 | |
79 | * boards can share the same shared memory address space. No interrupt | |
80 | * is required for this board type. | |
81 | * Another example: | |
82 | * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, | |
83 | * This line will configure an EasyConnection 8/64 EISA in slot 5 and | |
84 | * shared memory address of 0x80000000 (2 GByte). Multiple | |
85 | * EasyConnection 8/64 EISA boards can share the same shared memory | |
86 | * address space. No interrupt is required for this board type. | |
87 | * Another example: | |
88 | * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, | |
89 | * This line will configure an ONboard (ISA type) at io address 240, | |
90 | * and shared memory address of d0000. Multiple ONboards can share | |
91 | * the same shared memory address space. No interrupt required. | |
92 | * Another example: | |
93 | * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, | |
94 | * This line will configure a Brumby board (any number of ports!) at | |
95 | * io address 360 and shared memory address of c8000. All Brumby boards | |
96 | * configured into a system must have their own separate io and memory | |
97 | * addresses. No interrupt is required. | |
98 | * Another example: | |
99 | * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, | |
100 | * This line will configure an original Stallion board at io address 330 | |
101 | * and shared memory address d0000 (this would only be valid for a "V4.0" | |
102 | * or Rev.O Stallion board). All Stallion boards configured into the | |
103 | * system must have their own separate io and memory addresses. No | |
104 | * interrupt is required. | |
105 | */ | |
106 | ||
1f8ec435 | 107 | struct stlconf { |
1da177e4 LT |
108 | int brdtype; |
109 | int ioaddr1; | |
110 | int ioaddr2; | |
111 | unsigned long memaddr; | |
112 | int irq; | |
113 | int irqtype; | |
1f8ec435 | 114 | }; |
1da177e4 | 115 | |
1328d737 | 116 | static unsigned int stli_nrbrds; |
1da177e4 | 117 | |
4ac4360b AC |
118 | /* stli_lock must NOT be taken holding brd_lock */ |
119 | static spinlock_t stli_lock; /* TTY logic lock */ | |
120 | static spinlock_t brd_lock; /* Board logic lock */ | |
121 | ||
1da177e4 LT |
122 | /* |
123 | * There is some experimental EISA board detection code in this driver. | |
124 | * By default it is disabled, but for those that want to try it out, | |
125 | * then set the define below to be 1. | |
126 | */ | |
127 | #define STLI_EISAPROBE 0 | |
128 | ||
129 | /*****************************************************************************/ | |
130 | ||
131 | /* | |
132 | * Define some important driver characteristics. Device major numbers | |
133 | * allocated as per Linux Device Registry. | |
134 | */ | |
135 | #ifndef STL_SIOMEMMAJOR | |
136 | #define STL_SIOMEMMAJOR 28 | |
137 | #endif | |
138 | #ifndef STL_SERIALMAJOR | |
139 | #define STL_SERIALMAJOR 24 | |
140 | #endif | |
141 | #ifndef STL_CALLOUTMAJOR | |
142 | #define STL_CALLOUTMAJOR 25 | |
143 | #endif | |
144 | ||
145 | /*****************************************************************************/ | |
146 | ||
147 | /* | |
148 | * Define our local driver identity first. Set up stuff to deal with | |
149 | * all the local structures required by a serial tty driver. | |
150 | */ | |
151 | static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; | |
152 | static char *stli_drvname = "istallion"; | |
153 | static char *stli_drvversion = "5.6.0"; | |
154 | static char *stli_serialname = "ttyE"; | |
155 | ||
156 | static struct tty_driver *stli_serial; | |
31f35939 | 157 | static const struct tty_port_operations stli_port_ops; |
1da177e4 LT |
158 | |
159 | #define STLI_TXBUFSIZE 4096 | |
160 | ||
161 | /* | |
162 | * Use a fast local buffer for cooked characters. Typically a whole | |
163 | * bunch of cooked characters come in for a port, 1 at a time. So we | |
164 | * save those up into a local buffer, then write out the whole lot | |
165 | * with a large memcpy. Just use 1 buffer for all ports, since its | |
166 | * use it is only need for short periods of time by each port. | |
167 | */ | |
168 | static char *stli_txcookbuf; | |
169 | static int stli_txcooksize; | |
170 | static int stli_txcookrealsize; | |
171 | static struct tty_struct *stli_txcooktty; | |
172 | ||
173 | /* | |
174 | * Define a local default termios struct. All ports will be created | |
175 | * with this termios initially. Basically all it defines is a raw port | |
176 | * at 9600 baud, 8 data bits, no parity, 1 stop bit. | |
177 | */ | |
606d099c | 178 | static struct ktermios stli_deftermios = { |
1da177e4 LT |
179 | .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), |
180 | .c_cc = INIT_C_CC, | |
606d099c AC |
181 | .c_ispeed = 9600, |
182 | .c_ospeed = 9600, | |
1da177e4 LT |
183 | }; |
184 | ||
185 | /* | |
186 | * Define global stats structures. Not used often, and can be | |
187 | * re-used for each stats call. | |
188 | */ | |
189 | static comstats_t stli_comstats; | |
190 | static combrd_t stli_brdstats; | |
1f8ec435 | 191 | static struct asystats stli_cdkstats; |
1da177e4 LT |
192 | |
193 | /*****************************************************************************/ | |
194 | ||
b103b5cf | 195 | static DEFINE_MUTEX(stli_brdslock); |
1f8ec435 | 196 | static struct stlibrd *stli_brds[STL_MAXBRDS]; |
1da177e4 LT |
197 | |
198 | static int stli_shared; | |
199 | ||
200 | /* | |
201 | * Per board state flags. Used with the state field of the board struct. | |
202 | * Not really much here... All we need to do is keep track of whether | |
203 | * the board has been detected, and whether it is actually running a slave | |
204 | * or not. | |
205 | */ | |
206 | #define BST_FOUND 0x1 | |
207 | #define BST_STARTED 0x2 | |
39014172 | 208 | #define BST_PROBED 0x4 |
1da177e4 LT |
209 | |
210 | /* | |
211 | * Define the set of port state flags. These are marked for internal | |
212 | * state purposes only, usually to do with the state of communications | |
213 | * with the slave. Most of them need to be updated atomically, so always | |
214 | * use the bit setting operations (unless protected by cli/sti). | |
215 | */ | |
216 | #define ST_INITIALIZING 1 | |
217 | #define ST_OPENING 2 | |
218 | #define ST_CLOSING 3 | |
219 | #define ST_CMDING 4 | |
220 | #define ST_TXBUSY 5 | |
221 | #define ST_RXING 6 | |
222 | #define ST_DOFLUSHRX 7 | |
223 | #define ST_DOFLUSHTX 8 | |
224 | #define ST_DOSIGS 9 | |
225 | #define ST_RXSTOP 10 | |
226 | #define ST_GETSIGS 11 | |
227 | ||
228 | /* | |
229 | * Define an array of board names as printable strings. Handy for | |
230 | * referencing boards when printing trace and stuff. | |
231 | */ | |
232 | static char *stli_brdnames[] = { | |
233 | "Unknown", | |
234 | "Stallion", | |
235 | "Brumby", | |
236 | "ONboard-MC", | |
237 | "ONboard", | |
238 | "Brumby", | |
239 | "Brumby", | |
240 | "ONboard-EI", | |
a3f8d9d5 | 241 | NULL, |
1da177e4 LT |
242 | "ONboard", |
243 | "ONboard-MC", | |
244 | "ONboard-MC", | |
a3f8d9d5 JS |
245 | NULL, |
246 | NULL, | |
247 | NULL, | |
248 | NULL, | |
249 | NULL, | |
250 | NULL, | |
251 | NULL, | |
252 | NULL, | |
1da177e4 LT |
253 | "EasyIO", |
254 | "EC8/32-AT", | |
255 | "EC8/32-MC", | |
256 | "EC8/64-AT", | |
257 | "EC8/64-EI", | |
258 | "EC8/64-MC", | |
259 | "EC8/32-PCI", | |
260 | "EC8/64-PCI", | |
261 | "EasyIO-PCI", | |
262 | "EC/RA-PCI", | |
263 | }; | |
264 | ||
265 | /*****************************************************************************/ | |
266 | ||
1da177e4 LT |
267 | /* |
268 | * Define some string labels for arguments passed from the module | |
269 | * load line. These allow for easy board definitions, and easy | |
270 | * modification of the io, memory and irq resoucres. | |
271 | */ | |
272 | ||
273 | static char *board0[8]; | |
274 | static char *board1[8]; | |
275 | static char *board2[8]; | |
276 | static char *board3[8]; | |
277 | ||
278 | static char **stli_brdsp[] = { | |
279 | (char **) &board0, | |
280 | (char **) &board1, | |
281 | (char **) &board2, | |
282 | (char **) &board3 | |
283 | }; | |
284 | ||
285 | /* | |
286 | * Define a set of common board names, and types. This is used to | |
287 | * parse any module arguments. | |
288 | */ | |
289 | ||
1f8ec435 | 290 | static struct stlibrdtype { |
1da177e4 LT |
291 | char *name; |
292 | int type; | |
1f8ec435 | 293 | } stli_brdstr[] = { |
1da177e4 LT |
294 | { "stallion", BRD_STALLION }, |
295 | { "1", BRD_STALLION }, | |
296 | { "brumby", BRD_BRUMBY }, | |
297 | { "brumby4", BRD_BRUMBY }, | |
298 | { "brumby/4", BRD_BRUMBY }, | |
299 | { "brumby-4", BRD_BRUMBY }, | |
300 | { "brumby8", BRD_BRUMBY }, | |
301 | { "brumby/8", BRD_BRUMBY }, | |
302 | { "brumby-8", BRD_BRUMBY }, | |
303 | { "brumby16", BRD_BRUMBY }, | |
304 | { "brumby/16", BRD_BRUMBY }, | |
305 | { "brumby-16", BRD_BRUMBY }, | |
306 | { "2", BRD_BRUMBY }, | |
307 | { "onboard2", BRD_ONBOARD2 }, | |
308 | { "onboard-2", BRD_ONBOARD2 }, | |
309 | { "onboard/2", BRD_ONBOARD2 }, | |
310 | { "onboard-mc", BRD_ONBOARD2 }, | |
311 | { "onboard/mc", BRD_ONBOARD2 }, | |
312 | { "onboard-mca", BRD_ONBOARD2 }, | |
313 | { "onboard/mca", BRD_ONBOARD2 }, | |
314 | { "3", BRD_ONBOARD2 }, | |
315 | { "onboard", BRD_ONBOARD }, | |
316 | { "onboardat", BRD_ONBOARD }, | |
317 | { "4", BRD_ONBOARD }, | |
318 | { "onboarde", BRD_ONBOARDE }, | |
319 | { "onboard-e", BRD_ONBOARDE }, | |
320 | { "onboard/e", BRD_ONBOARDE }, | |
321 | { "onboard-ei", BRD_ONBOARDE }, | |
322 | { "onboard/ei", BRD_ONBOARDE }, | |
323 | { "7", BRD_ONBOARDE }, | |
324 | { "ecp", BRD_ECP }, | |
325 | { "ecpat", BRD_ECP }, | |
326 | { "ec8/64", BRD_ECP }, | |
327 | { "ec8/64-at", BRD_ECP }, | |
328 | { "ec8/64-isa", BRD_ECP }, | |
329 | { "23", BRD_ECP }, | |
330 | { "ecpe", BRD_ECPE }, | |
331 | { "ecpei", BRD_ECPE }, | |
332 | { "ec8/64-e", BRD_ECPE }, | |
333 | { "ec8/64-ei", BRD_ECPE }, | |
334 | { "24", BRD_ECPE }, | |
335 | { "ecpmc", BRD_ECPMC }, | |
336 | { "ec8/64-mc", BRD_ECPMC }, | |
337 | { "ec8/64-mca", BRD_ECPMC }, | |
338 | { "25", BRD_ECPMC }, | |
339 | { "ecppci", BRD_ECPPCI }, | |
340 | { "ec/ra", BRD_ECPPCI }, | |
341 | { "ec/ra-pc", BRD_ECPPCI }, | |
342 | { "ec/ra-pci", BRD_ECPPCI }, | |
343 | { "29", BRD_ECPPCI }, | |
344 | }; | |
345 | ||
346 | /* | |
347 | * Define the module agruments. | |
348 | */ | |
349 | MODULE_AUTHOR("Greg Ungerer"); | |
350 | MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); | |
351 | MODULE_LICENSE("GPL"); | |
352 | ||
353 | ||
8d3b33f6 | 354 | module_param_array(board0, charp, NULL, 0); |
1da177e4 | 355 | MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 356 | module_param_array(board1, charp, NULL, 0); |
1da177e4 | 357 | MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 358 | module_param_array(board2, charp, NULL, 0); |
1da177e4 | 359 | MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 360 | module_param_array(board3, charp, NULL, 0); |
1da177e4 LT |
361 | MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); |
362 | ||
a00f33f3 | 363 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
364 | /* |
365 | * Set up a default memory address table for EISA board probing. | |
366 | * The default addresses are all bellow 1Mbyte, which has to be the | |
367 | * case anyway. They should be safe, since we only read values from | |
368 | * them, and interrupts are disabled while we do it. If the higher | |
369 | * memory support is compiled in then we also try probing around | |
370 | * the 1Gb, 2Gb and 3Gb areas as well... | |
371 | */ | |
372 | static unsigned long stli_eisamemprobeaddrs[] = { | |
373 | 0xc0000, 0xd0000, 0xe0000, 0xf0000, | |
374 | 0x80000000, 0x80010000, 0x80020000, 0x80030000, | |
375 | 0x40000000, 0x40010000, 0x40020000, 0x40030000, | |
376 | 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, | |
377 | 0xff000000, 0xff010000, 0xff020000, 0xff030000, | |
378 | }; | |
379 | ||
fe971071 | 380 | static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs); |
a00f33f3 | 381 | #endif |
1da177e4 LT |
382 | |
383 | /* | |
384 | * Define the Stallion PCI vendor and device IDs. | |
385 | */ | |
1da177e4 LT |
386 | #ifndef PCI_DEVICE_ID_ECRA |
387 | #define PCI_DEVICE_ID_ECRA 0x0004 | |
388 | #endif | |
389 | ||
390 | static struct pci_device_id istallion_pci_tbl[] = { | |
4ac4360b | 391 | { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), }, |
1da177e4 LT |
392 | { 0 } |
393 | }; | |
394 | MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); | |
395 | ||
845bead4 | 396 | static struct pci_driver stli_pcidriver; |
1da177e4 LT |
397 | |
398 | /*****************************************************************************/ | |
399 | ||
400 | /* | |
401 | * Hardware configuration info for ECP boards. These defines apply | |
402 | * to the directly accessible io ports of the ECP. There is a set of | |
403 | * defines for each ECP board type, ISA, EISA, MCA and PCI. | |
404 | */ | |
405 | #define ECP_IOSIZE 4 | |
406 | ||
407 | #define ECP_MEMSIZE (128 * 1024) | |
408 | #define ECP_PCIMEMSIZE (256 * 1024) | |
409 | ||
410 | #define ECP_ATPAGESIZE (4 * 1024) | |
411 | #define ECP_MCPAGESIZE (4 * 1024) | |
412 | #define ECP_EIPAGESIZE (64 * 1024) | |
413 | #define ECP_PCIPAGESIZE (64 * 1024) | |
414 | ||
415 | #define STL_EISAID 0x8c4e | |
416 | ||
417 | /* | |
418 | * Important defines for the ISA class of ECP board. | |
419 | */ | |
420 | #define ECP_ATIREG 0 | |
421 | #define ECP_ATCONFR 1 | |
422 | #define ECP_ATMEMAR 2 | |
423 | #define ECP_ATMEMPR 3 | |
424 | #define ECP_ATSTOP 0x1 | |
425 | #define ECP_ATINTENAB 0x10 | |
426 | #define ECP_ATENABLE 0x20 | |
427 | #define ECP_ATDISABLE 0x00 | |
428 | #define ECP_ATADDRMASK 0x3f000 | |
429 | #define ECP_ATADDRSHFT 12 | |
430 | ||
431 | /* | |
432 | * Important defines for the EISA class of ECP board. | |
433 | */ | |
434 | #define ECP_EIIREG 0 | |
435 | #define ECP_EIMEMARL 1 | |
436 | #define ECP_EICONFR 2 | |
437 | #define ECP_EIMEMARH 3 | |
438 | #define ECP_EIENABLE 0x1 | |
439 | #define ECP_EIDISABLE 0x0 | |
440 | #define ECP_EISTOP 0x4 | |
441 | #define ECP_EIEDGE 0x00 | |
442 | #define ECP_EILEVEL 0x80 | |
443 | #define ECP_EIADDRMASKL 0x00ff0000 | |
444 | #define ECP_EIADDRSHFTL 16 | |
445 | #define ECP_EIADDRMASKH 0xff000000 | |
446 | #define ECP_EIADDRSHFTH 24 | |
447 | #define ECP_EIBRDENAB 0xc84 | |
448 | ||
449 | #define ECP_EISAID 0x4 | |
450 | ||
451 | /* | |
452 | * Important defines for the Micro-channel class of ECP board. | |
453 | * (It has a lot in common with the ISA boards.) | |
454 | */ | |
455 | #define ECP_MCIREG 0 | |
456 | #define ECP_MCCONFR 1 | |
457 | #define ECP_MCSTOP 0x20 | |
458 | #define ECP_MCENABLE 0x80 | |
459 | #define ECP_MCDISABLE 0x00 | |
460 | ||
461 | /* | |
462 | * Important defines for the PCI class of ECP board. | |
463 | * (It has a lot in common with the other ECP boards.) | |
464 | */ | |
465 | #define ECP_PCIIREG 0 | |
466 | #define ECP_PCICONFR 1 | |
467 | #define ECP_PCISTOP 0x01 | |
468 | ||
469 | /* | |
470 | * Hardware configuration info for ONboard and Brumby boards. These | |
471 | * defines apply to the directly accessible io ports of these boards. | |
472 | */ | |
473 | #define ONB_IOSIZE 16 | |
474 | #define ONB_MEMSIZE (64 * 1024) | |
475 | #define ONB_ATPAGESIZE (64 * 1024) | |
476 | #define ONB_MCPAGESIZE (64 * 1024) | |
477 | #define ONB_EIMEMSIZE (128 * 1024) | |
478 | #define ONB_EIPAGESIZE (64 * 1024) | |
479 | ||
480 | /* | |
481 | * Important defines for the ISA class of ONboard board. | |
482 | */ | |
483 | #define ONB_ATIREG 0 | |
484 | #define ONB_ATMEMAR 1 | |
485 | #define ONB_ATCONFR 2 | |
486 | #define ONB_ATSTOP 0x4 | |
487 | #define ONB_ATENABLE 0x01 | |
488 | #define ONB_ATDISABLE 0x00 | |
489 | #define ONB_ATADDRMASK 0xff0000 | |
490 | #define ONB_ATADDRSHFT 16 | |
491 | ||
492 | #define ONB_MEMENABLO 0 | |
493 | #define ONB_MEMENABHI 0x02 | |
494 | ||
495 | /* | |
496 | * Important defines for the EISA class of ONboard board. | |
497 | */ | |
498 | #define ONB_EIIREG 0 | |
499 | #define ONB_EIMEMARL 1 | |
500 | #define ONB_EICONFR 2 | |
501 | #define ONB_EIMEMARH 3 | |
502 | #define ONB_EIENABLE 0x1 | |
503 | #define ONB_EIDISABLE 0x0 | |
504 | #define ONB_EISTOP 0x4 | |
505 | #define ONB_EIEDGE 0x00 | |
506 | #define ONB_EILEVEL 0x80 | |
507 | #define ONB_EIADDRMASKL 0x00ff0000 | |
508 | #define ONB_EIADDRSHFTL 16 | |
509 | #define ONB_EIADDRMASKH 0xff000000 | |
510 | #define ONB_EIADDRSHFTH 24 | |
511 | #define ONB_EIBRDENAB 0xc84 | |
512 | ||
513 | #define ONB_EISAID 0x1 | |
514 | ||
515 | /* | |
516 | * Important defines for the Brumby boards. They are pretty simple, | |
517 | * there is not much that is programmably configurable. | |
518 | */ | |
519 | #define BBY_IOSIZE 16 | |
520 | #define BBY_MEMSIZE (64 * 1024) | |
521 | #define BBY_PAGESIZE (16 * 1024) | |
522 | ||
523 | #define BBY_ATIREG 0 | |
524 | #define BBY_ATCONFR 1 | |
525 | #define BBY_ATSTOP 0x4 | |
526 | ||
527 | /* | |
528 | * Important defines for the Stallion boards. They are pretty simple, | |
529 | * there is not much that is programmably configurable. | |
530 | */ | |
531 | #define STAL_IOSIZE 16 | |
532 | #define STAL_MEMSIZE (64 * 1024) | |
533 | #define STAL_PAGESIZE (64 * 1024) | |
534 | ||
535 | /* | |
536 | * Define the set of status register values for EasyConnection panels. | |
537 | * The signature will return with the status value for each panel. From | |
538 | * this we can determine what is attached to the board - before we have | |
539 | * actually down loaded any code to it. | |
540 | */ | |
541 | #define ECH_PNLSTATUS 2 | |
542 | #define ECH_PNL16PORT 0x20 | |
543 | #define ECH_PNLIDMASK 0x07 | |
544 | #define ECH_PNLXPID 0x40 | |
545 | #define ECH_PNLINTRPEND 0x80 | |
546 | ||
547 | /* | |
548 | * Define some macros to do things to the board. Even those these boards | |
549 | * are somewhat related there is often significantly different ways of | |
550 | * doing some operation on it (like enable, paging, reset, etc). So each | |
551 | * board class has a set of functions which do the commonly required | |
552 | * operations. The macros below basically just call these functions, | |
553 | * generally checking for a NULL function - which means that the board | |
554 | * needs nothing done to it to achieve this operation! | |
555 | */ | |
556 | #define EBRDINIT(brdp) \ | |
557 | if (brdp->init != NULL) \ | |
558 | (* brdp->init)(brdp) | |
559 | ||
560 | #define EBRDENABLE(brdp) \ | |
561 | if (brdp->enable != NULL) \ | |
562 | (* brdp->enable)(brdp); | |
563 | ||
564 | #define EBRDDISABLE(brdp) \ | |
565 | if (brdp->disable != NULL) \ | |
566 | (* brdp->disable)(brdp); | |
567 | ||
568 | #define EBRDINTR(brdp) \ | |
569 | if (brdp->intr != NULL) \ | |
570 | (* brdp->intr)(brdp); | |
571 | ||
572 | #define EBRDRESET(brdp) \ | |
573 | if (brdp->reset != NULL) \ | |
574 | (* brdp->reset)(brdp); | |
575 | ||
576 | #define EBRDGETMEMPTR(brdp,offset) \ | |
577 | (* brdp->getmemptr)(brdp, offset, __LINE__) | |
578 | ||
579 | /* | |
580 | * Define the maximal baud rate, and the default baud base for ports. | |
581 | */ | |
582 | #define STL_MAXBAUD 460800 | |
583 | #define STL_BAUDBASE 115200 | |
584 | #define STL_CLOSEDELAY (5 * HZ / 10) | |
585 | ||
586 | /*****************************************************************************/ | |
587 | ||
588 | /* | |
589 | * Define macros to extract a brd or port number from a minor number. | |
590 | */ | |
591 | #define MINOR2BRD(min) (((min) & 0xc0) >> 6) | |
592 | #define MINOR2PORT(min) ((min) & 0x3f) | |
593 | ||
1da177e4 LT |
594 | /*****************************************************************************/ |
595 | ||
1da177e4 LT |
596 | /* |
597 | * Prototype all functions in this driver! | |
598 | */ | |
599 | ||
1f8ec435 | 600 | static int stli_parsebrd(struct stlconf *confp, char **argp); |
1da177e4 LT |
601 | static int stli_open(struct tty_struct *tty, struct file *filp); |
602 | static void stli_close(struct tty_struct *tty, struct file *filp); | |
603 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); | |
42a77a1b | 604 | static int stli_putchar(struct tty_struct *tty, unsigned char ch); |
1da177e4 LT |
605 | static void stli_flushchars(struct tty_struct *tty); |
606 | static int stli_writeroom(struct tty_struct *tty); | |
607 | static int stli_charsinbuffer(struct tty_struct *tty); | |
608 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); | |
606d099c | 609 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old); |
1da177e4 LT |
610 | static void stli_throttle(struct tty_struct *tty); |
611 | static void stli_unthrottle(struct tty_struct *tty); | |
612 | static void stli_stop(struct tty_struct *tty); | |
613 | static void stli_start(struct tty_struct *tty); | |
614 | static void stli_flushbuffer(struct tty_struct *tty); | |
9e98966c | 615 | static int stli_breakctl(struct tty_struct *tty, int state); |
1da177e4 LT |
616 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); |
617 | static void stli_sendxchar(struct tty_struct *tty, char ch); | |
618 | static void stli_hangup(struct tty_struct *tty); | |
1da177e4 | 619 | |
1f8ec435 JS |
620 | static int stli_brdinit(struct stlibrd *brdp); |
621 | static int stli_startbrd(struct stlibrd *brdp); | |
1da177e4 LT |
622 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); |
623 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); | |
624 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); | |
1f8ec435 | 625 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp); |
1da177e4 | 626 | static void stli_poll(unsigned long arg); |
1f8ec435 | 627 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp); |
d18a750f | 628 | static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp); |
1f8ec435 JS |
629 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); |
630 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); | |
d18a750f | 631 | static int stli_setport(struct tty_struct *tty); |
1f8ec435 JS |
632 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); |
633 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
634 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
635 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp); | |
d18a750f | 636 | static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp); |
1da177e4 LT |
637 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); |
638 | static long stli_mktiocm(unsigned long sigvalue); | |
1f8ec435 JS |
639 | static void stli_read(struct stlibrd *brdp, struct stliport *portp); |
640 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp); | |
d18a750f | 641 | static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp); |
1da177e4 | 642 | static int stli_getbrdstats(combrd_t __user *bp); |
d18a750f AC |
643 | static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp); |
644 | static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp); | |
1f8ec435 JS |
645 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp); |
646 | static int stli_getportstruct(struct stliport __user *arg); | |
647 | static int stli_getbrdstruct(struct stlibrd __user *arg); | |
648 | static struct stlibrd *stli_allocbrd(void); | |
649 | ||
650 | static void stli_ecpinit(struct stlibrd *brdp); | |
651 | static void stli_ecpenable(struct stlibrd *brdp); | |
652 | static void stli_ecpdisable(struct stlibrd *brdp); | |
653 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
654 | static void stli_ecpreset(struct stlibrd *brdp); | |
655 | static void stli_ecpintr(struct stlibrd *brdp); | |
656 | static void stli_ecpeiinit(struct stlibrd *brdp); | |
657 | static void stli_ecpeienable(struct stlibrd *brdp); | |
658 | static void stli_ecpeidisable(struct stlibrd *brdp); | |
659 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
660 | static void stli_ecpeireset(struct stlibrd *brdp); | |
661 | static void stli_ecpmcenable(struct stlibrd *brdp); | |
662 | static void stli_ecpmcdisable(struct stlibrd *brdp); | |
663 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
664 | static void stli_ecpmcreset(struct stlibrd *brdp); | |
665 | static void stli_ecppciinit(struct stlibrd *brdp); | |
666 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
667 | static void stli_ecppcireset(struct stlibrd *brdp); | |
668 | ||
669 | static void stli_onbinit(struct stlibrd *brdp); | |
670 | static void stli_onbenable(struct stlibrd *brdp); | |
671 | static void stli_onbdisable(struct stlibrd *brdp); | |
672 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
673 | static void stli_onbreset(struct stlibrd *brdp); | |
674 | static void stli_onbeinit(struct stlibrd *brdp); | |
675 | static void stli_onbeenable(struct stlibrd *brdp); | |
676 | static void stli_onbedisable(struct stlibrd *brdp); | |
677 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
678 | static void stli_onbereset(struct stlibrd *brdp); | |
679 | static void stli_bbyinit(struct stlibrd *brdp); | |
680 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
681 | static void stli_bbyreset(struct stlibrd *brdp); | |
682 | static void stli_stalinit(struct stlibrd *brdp); | |
683 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
684 | static void stli_stalreset(struct stlibrd *brdp); | |
685 | ||
1328d737 | 686 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr); |
1f8ec435 JS |
687 | |
688 | static int stli_initecp(struct stlibrd *brdp); | |
689 | static int stli_initonb(struct stlibrd *brdp); | |
a00f33f3 | 690 | #if STLI_EISAPROBE != 0 |
1f8ec435 | 691 | static int stli_eisamemprobe(struct stlibrd *brdp); |
a00f33f3 | 692 | #endif |
1f8ec435 | 693 | static int stli_initports(struct stlibrd *brdp); |
1da177e4 | 694 | |
1da177e4 LT |
695 | /*****************************************************************************/ |
696 | ||
697 | /* | |
698 | * Define the driver info for a user level shared memory device. This | |
699 | * device will work sort of like the /dev/kmem device - except that it | |
700 | * will give access to the shared memory on the Stallion intelligent | |
701 | * board. This is also a very useful debugging tool. | |
702 | */ | |
62322d25 | 703 | static const struct file_operations stli_fsiomem = { |
1da177e4 LT |
704 | .owner = THIS_MODULE, |
705 | .read = stli_memread, | |
706 | .write = stli_memwrite, | |
707 | .ioctl = stli_memioctl, | |
708 | }; | |
709 | ||
710 | /*****************************************************************************/ | |
711 | ||
712 | /* | |
713 | * Define a timer_list entry for our poll routine. The slave board | |
714 | * is polled every so often to see if anything needs doing. This is | |
715 | * much cheaper on host cpu than using interrupts. It turns out to | |
716 | * not increase character latency by much either... | |
717 | */ | |
8d06afab | 718 | static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); |
1da177e4 LT |
719 | |
720 | static int stli_timeron; | |
721 | ||
722 | /* | |
723 | * Define the calculation for the timeout routine. | |
724 | */ | |
725 | #define STLI_TIMEOUT (jiffies + 1) | |
726 | ||
727 | /*****************************************************************************/ | |
728 | ||
ca8eca68 | 729 | static struct class *istallion_class; |
1da177e4 | 730 | |
1f8ec435 | 731 | static void stli_cleanup_ports(struct stlibrd *brdp) |
845bead4 | 732 | { |
1f8ec435 | 733 | struct stliport *portp; |
845bead4 | 734 | unsigned int j; |
d18a750f | 735 | struct tty_struct *tty; |
845bead4 JS |
736 | |
737 | for (j = 0; j < STL_MAXPORTS; j++) { | |
738 | portp = brdp->ports[j]; | |
739 | if (portp != NULL) { | |
d18a750f AC |
740 | tty = tty_port_tty_get(&portp->port); |
741 | if (tty != NULL) { | |
742 | tty_hangup(tty); | |
743 | tty_kref_put(tty); | |
744 | } | |
845bead4 JS |
745 | kfree(portp); |
746 | } | |
747 | } | |
748 | } | |
749 | ||
1da177e4 LT |
750 | /*****************************************************************************/ |
751 | ||
1da177e4 LT |
752 | /* |
753 | * Parse the supplied argument string, into the board conf struct. | |
754 | */ | |
755 | ||
1f8ec435 | 756 | static int stli_parsebrd(struct stlconf *confp, char **argp) |
1da177e4 | 757 | { |
1328d737 | 758 | unsigned int i; |
4ac4360b | 759 | char *sp; |
1da177e4 | 760 | |
4ac4360b AC |
761 | if (argp[0] == NULL || *argp[0] == 0) |
762 | return 0; | |
1da177e4 LT |
763 | |
764 | for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) | |
a3f8d9d5 | 765 | *sp = tolower(*sp); |
1da177e4 | 766 | |
fe971071 | 767 | for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) { |
1da177e4 LT |
768 | if (strcmp(stli_brdstr[i].name, argp[0]) == 0) |
769 | break; | |
770 | } | |
fe971071 | 771 | if (i == ARRAY_SIZE(stli_brdstr)) { |
a6614999 | 772 | printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]); |
fe971071 | 773 | return 0; |
1da177e4 LT |
774 | } |
775 | ||
776 | confp->brdtype = stli_brdstr[i].type; | |
4ac4360b | 777 | if (argp[1] != NULL && *argp[1] != 0) |
a3f8d9d5 | 778 | confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0); |
4ac4360b | 779 | if (argp[2] != NULL && *argp[2] != 0) |
a3f8d9d5 | 780 | confp->memaddr = simple_strtoul(argp[2], NULL, 0); |
1da177e4 LT |
781 | return(1); |
782 | } | |
783 | ||
1da177e4 LT |
784 | /*****************************************************************************/ |
785 | ||
1da177e4 LT |
786 | static int stli_open(struct tty_struct *tty, struct file *filp) |
787 | { | |
1f8ec435 JS |
788 | struct stlibrd *brdp; |
789 | struct stliport *portp; | |
2a6eadbd | 790 | struct tty_port *port; |
1328d737 JS |
791 | unsigned int minordev, brdnr, portnr; |
792 | int rc; | |
1da177e4 LT |
793 | |
794 | minordev = tty->index; | |
795 | brdnr = MINOR2BRD(minordev); | |
796 | if (brdnr >= stli_nrbrds) | |
4ac4360b | 797 | return -ENODEV; |
1da177e4 | 798 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
799 | if (brdp == NULL) |
800 | return -ENODEV; | |
1da177e4 | 801 | if ((brdp->state & BST_STARTED) == 0) |
4ac4360b | 802 | return -ENODEV; |
1da177e4 | 803 | portnr = MINOR2PORT(minordev); |
1328d737 | 804 | if (portnr > brdp->nrports) |
4ac4360b | 805 | return -ENODEV; |
1da177e4 LT |
806 | |
807 | portp = brdp->ports[portnr]; | |
4ac4360b AC |
808 | if (portp == NULL) |
809 | return -ENODEV; | |
1da177e4 | 810 | if (portp->devnr < 1) |
4ac4360b | 811 | return -ENODEV; |
2a6eadbd | 812 | port = &portp->port; |
1da177e4 LT |
813 | |
814 | /* | |
815 | * On the first open of the device setup the port hardware, and | |
816 | * initialize the per port data structure. Since initializing the port | |
817 | * requires several commands to the board we will need to wait for any | |
818 | * other open that is already initializing the port. | |
2a6eadbd AC |
819 | * |
820 | * Review - locking | |
1da177e4 | 821 | */ |
2a6eadbd | 822 | tty_port_tty_set(port, tty); |
1da177e4 | 823 | tty->driver_data = portp; |
2a6eadbd | 824 | port->count++; |
1da177e4 LT |
825 | |
826 | wait_event_interruptible(portp->raw_wait, | |
827 | !test_bit(ST_INITIALIZING, &portp->state)); | |
828 | if (signal_pending(current)) | |
4ac4360b | 829 | return -ERESTARTSYS; |
1da177e4 | 830 | |
b02f5ad6 | 831 | if ((portp->port.flags & ASYNC_INITIALIZED) == 0) { |
1da177e4 | 832 | set_bit(ST_INITIALIZING, &portp->state); |
d18a750f | 833 | if ((rc = stli_initopen(tty, brdp, portp)) >= 0) { |
2a6eadbd AC |
834 | /* Locking */ |
835 | port->flags |= ASYNC_INITIALIZED; | |
1da177e4 LT |
836 | clear_bit(TTY_IO_ERROR, &tty->flags); |
837 | } | |
838 | clear_bit(ST_INITIALIZING, &portp->state); | |
839 | wake_up_interruptible(&portp->raw_wait); | |
840 | if (rc < 0) | |
4ac4360b | 841 | return rc; |
1da177e4 | 842 | } |
2a6eadbd | 843 | return tty_port_block_til_ready(&portp->port, tty, filp); |
1da177e4 LT |
844 | } |
845 | ||
846 | /*****************************************************************************/ | |
847 | ||
848 | static void stli_close(struct tty_struct *tty, struct file *filp) | |
849 | { | |
1f8ec435 JS |
850 | struct stlibrd *brdp; |
851 | struct stliport *portp; | |
2a6eadbd | 852 | struct tty_port *port; |
4ac4360b | 853 | unsigned long flags; |
1da177e4 LT |
854 | |
855 | portp = tty->driver_data; | |
4ac4360b | 856 | if (portp == NULL) |
1da177e4 | 857 | return; |
2a6eadbd | 858 | port = &portp->port; |
1da177e4 | 859 | |
a6614999 | 860 | if (tty_port_close_start(port, tty, filp) == 0) |
1da177e4 | 861 | return; |
1da177e4 LT |
862 | |
863 | /* | |
864 | * May want to wait for data to drain before closing. The BUSY flag | |
865 | * keeps track of whether we are still transmitting or not. It is | |
866 | * updated by messages from the slave - indicating when all chars | |
867 | * really have drained. | |
868 | */ | |
2a6eadbd | 869 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
870 | if (tty == stli_txcooktty) |
871 | stli_flushchars(tty); | |
4ac4360b AC |
872 | spin_unlock_irqrestore(&stli_lock, flags); |
873 | ||
a6614999 AC |
874 | /* We end up doing this twice for the moment. This needs looking at |
875 | eventually. Note we still use portp->closing_wait as a result */ | |
1da177e4 LT |
876 | if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
877 | tty_wait_until_sent(tty, portp->closing_wait); | |
878 | ||
2a6eadbd AC |
879 | /* FIXME: port locking here needs attending to */ |
880 | port->flags &= ~ASYNC_INITIALIZED; | |
881 | ||
1da177e4 LT |
882 | brdp = stli_brds[portp->brdnr]; |
883 | stli_rawclose(brdp, portp, 0, 0); | |
884 | if (tty->termios->c_cflag & HUPCL) { | |
885 | stli_mkasysigs(&portp->asig, 0, 0); | |
886 | if (test_bit(ST_CMDING, &portp->state)) | |
887 | set_bit(ST_DOSIGS, &portp->state); | |
888 | else | |
889 | stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig, | |
890 | sizeof(asysigs_t), 0); | |
891 | } | |
892 | clear_bit(ST_TXBUSY, &portp->state); | |
893 | clear_bit(ST_RXSTOP, &portp->state); | |
894 | set_bit(TTY_IO_ERROR, &tty->flags); | |
ed569bfb | 895 | tty_ldisc_flush(tty); |
1da177e4 LT |
896 | set_bit(ST_DOFLUSHRX, &portp->state); |
897 | stli_flushbuffer(tty); | |
898 | ||
a6614999 AC |
899 | tty_port_close_end(port, tty); |
900 | tty_port_tty_set(port, NULL); | |
1da177e4 LT |
901 | } |
902 | ||
903 | /*****************************************************************************/ | |
904 | ||
905 | /* | |
906 | * Carry out first open operations on a port. This involves a number of | |
907 | * commands to be sent to the slave. We need to open the port, set the | |
908 | * notification events, set the initial port settings, get and set the | |
909 | * initial signal values. We sleep and wait in between each one. But | |
910 | * this still all happens pretty quickly. | |
911 | */ | |
912 | ||
d18a750f AC |
913 | static int stli_initopen(struct tty_struct *tty, |
914 | struct stlibrd *brdp, struct stliport *portp) | |
1da177e4 | 915 | { |
4ac4360b AC |
916 | asynotify_t nt; |
917 | asyport_t aport; | |
918 | int rc; | |
1da177e4 LT |
919 | |
920 | if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) | |
4ac4360b | 921 | return rc; |
1da177e4 LT |
922 | |
923 | memset(&nt, 0, sizeof(asynotify_t)); | |
924 | nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); | |
925 | nt.signal = SG_DCD; | |
926 | if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, | |
927 | sizeof(asynotify_t), 0)) < 0) | |
4ac4360b | 928 | return rc; |
1da177e4 | 929 | |
d18a750f | 930 | stli_mkasyport(tty, portp, &aport, tty->termios); |
1da177e4 LT |
931 | if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, |
932 | sizeof(asyport_t), 0)) < 0) | |
4ac4360b | 933 | return rc; |
1da177e4 LT |
934 | |
935 | set_bit(ST_GETSIGS, &portp->state); | |
936 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, | |
937 | sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 938 | return rc; |
1da177e4 LT |
939 | if (test_and_clear_bit(ST_GETSIGS, &portp->state)) |
940 | portp->sigs = stli_mktiocm(portp->asig.sigvalue); | |
941 | stli_mkasysigs(&portp->asig, 1, 1); | |
942 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
943 | sizeof(asysigs_t), 0)) < 0) | |
4ac4360b | 944 | return rc; |
1da177e4 | 945 | |
4ac4360b | 946 | return 0; |
1da177e4 LT |
947 | } |
948 | ||
949 | /*****************************************************************************/ | |
950 | ||
951 | /* | |
952 | * Send an open message to the slave. This will sleep waiting for the | |
953 | * acknowledgement, so must have user context. We need to co-ordinate | |
954 | * with close events here, since we don't want open and close events | |
955 | * to overlap. | |
956 | */ | |
957 | ||
1f8ec435 | 958 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 959 | { |
4ac4360b AC |
960 | cdkhdr_t __iomem *hdrp; |
961 | cdkctrl_t __iomem *cp; | |
962 | unsigned char __iomem *bits; | |
963 | unsigned long flags; | |
964 | int rc; | |
1da177e4 LT |
965 | |
966 | /* | |
967 | * Send a message to the slave to open this port. | |
968 | */ | |
1da177e4 LT |
969 | |
970 | /* | |
971 | * Slave is already closing this port. This can happen if a hangup | |
972 | * occurs on this port. So we must wait until it is complete. The | |
973 | * order of opens and closes may not be preserved across shared | |
974 | * memory, so we must wait until it is complete. | |
975 | */ | |
976 | wait_event_interruptible(portp->raw_wait, | |
977 | !test_bit(ST_CLOSING, &portp->state)); | |
978 | if (signal_pending(current)) { | |
1da177e4 LT |
979 | return -ERESTARTSYS; |
980 | } | |
981 | ||
982 | /* | |
983 | * Everything is ready now, so write the open message into shared | |
984 | * memory. Once the message is in set the service bits to say that | |
985 | * this port wants service. | |
986 | */ | |
4ac4360b | 987 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 988 | EBRDENABLE(brdp); |
4ac4360b AC |
989 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
990 | writel(arg, &cp->openarg); | |
991 | writeb(1, &cp->open); | |
992 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
993 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 994 | portp->portidx; |
4ac4360b | 995 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
996 | EBRDDISABLE(brdp); |
997 | ||
998 | if (wait == 0) { | |
4ac4360b AC |
999 | spin_unlock_irqrestore(&brd_lock, flags); |
1000 | return 0; | |
1da177e4 LT |
1001 | } |
1002 | ||
1003 | /* | |
1004 | * Slave is in action, so now we must wait for the open acknowledgment | |
1005 | * to come back. | |
1006 | */ | |
1007 | rc = 0; | |
1008 | set_bit(ST_OPENING, &portp->state); | |
4ac4360b AC |
1009 | spin_unlock_irqrestore(&brd_lock, flags); |
1010 | ||
1da177e4 LT |
1011 | wait_event_interruptible(portp->raw_wait, |
1012 | !test_bit(ST_OPENING, &portp->state)); | |
1013 | if (signal_pending(current)) | |
1014 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1015 | |
1016 | if ((rc == 0) && (portp->rc != 0)) | |
1017 | rc = -EIO; | |
4ac4360b | 1018 | return rc; |
1da177e4 LT |
1019 | } |
1020 | ||
1021 | /*****************************************************************************/ | |
1022 | ||
1023 | /* | |
1024 | * Send a close message to the slave. Normally this will sleep waiting | |
1025 | * for the acknowledgement, but if wait parameter is 0 it will not. If | |
1026 | * wait is true then must have user context (to sleep). | |
1027 | */ | |
1028 | ||
1f8ec435 | 1029 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 1030 | { |
4ac4360b AC |
1031 | cdkhdr_t __iomem *hdrp; |
1032 | cdkctrl_t __iomem *cp; | |
1033 | unsigned char __iomem *bits; | |
1034 | unsigned long flags; | |
1035 | int rc; | |
1da177e4 LT |
1036 | |
1037 | /* | |
1038 | * Slave is already closing this port. This can happen if a hangup | |
1039 | * occurs on this port. | |
1040 | */ | |
1041 | if (wait) { | |
1042 | wait_event_interruptible(portp->raw_wait, | |
1043 | !test_bit(ST_CLOSING, &portp->state)); | |
1044 | if (signal_pending(current)) { | |
1da177e4 LT |
1045 | return -ERESTARTSYS; |
1046 | } | |
1047 | } | |
1048 | ||
1049 | /* | |
1050 | * Write the close command into shared memory. | |
1051 | */ | |
4ac4360b | 1052 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1053 | EBRDENABLE(brdp); |
4ac4360b AC |
1054 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1055 | writel(arg, &cp->closearg); | |
1056 | writeb(1, &cp->close); | |
1057 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1058 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1059 | portp->portidx; |
4ac4360b | 1060 | writeb(readb(bits) |portp->portbit, bits); |
1da177e4 LT |
1061 | EBRDDISABLE(brdp); |
1062 | ||
1063 | set_bit(ST_CLOSING, &portp->state); | |
4ac4360b AC |
1064 | spin_unlock_irqrestore(&brd_lock, flags); |
1065 | ||
1066 | if (wait == 0) | |
1067 | return 0; | |
1da177e4 LT |
1068 | |
1069 | /* | |
1070 | * Slave is in action, so now we must wait for the open acknowledgment | |
1071 | * to come back. | |
1072 | */ | |
1073 | rc = 0; | |
1074 | wait_event_interruptible(portp->raw_wait, | |
1075 | !test_bit(ST_CLOSING, &portp->state)); | |
1076 | if (signal_pending(current)) | |
1077 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1078 | |
1079 | if ((rc == 0) && (portp->rc != 0)) | |
1080 | rc = -EIO; | |
4ac4360b | 1081 | return rc; |
1da177e4 LT |
1082 | } |
1083 | ||
1084 | /*****************************************************************************/ | |
1085 | ||
1086 | /* | |
1087 | * Send a command to the slave and wait for the response. This must | |
1088 | * have user context (it sleeps). This routine is generic in that it | |
1089 | * can send any type of command. Its purpose is to wait for that command | |
1090 | * to complete (as opposed to initiating the command then returning). | |
1091 | */ | |
1092 | ||
1f8ec435 | 1093 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 1094 | { |
1da177e4 LT |
1095 | wait_event_interruptible(portp->raw_wait, |
1096 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1097 | if (signal_pending(current)) |
1da177e4 | 1098 | return -ERESTARTSYS; |
1da177e4 LT |
1099 | |
1100 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
1101 | ||
1102 | wait_event_interruptible(portp->raw_wait, | |
1103 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1104 | if (signal_pending(current)) |
1da177e4 | 1105 | return -ERESTARTSYS; |
1da177e4 LT |
1106 | |
1107 | if (portp->rc != 0) | |
4ac4360b AC |
1108 | return -EIO; |
1109 | return 0; | |
1da177e4 LT |
1110 | } |
1111 | ||
1112 | /*****************************************************************************/ | |
1113 | ||
1114 | /* | |
1115 | * Send the termios settings for this port to the slave. This sleeps | |
1116 | * waiting for the command to complete - so must have user context. | |
1117 | */ | |
1118 | ||
d18a750f | 1119 | static int stli_setport(struct tty_struct *tty) |
1da177e4 | 1120 | { |
d18a750f | 1121 | struct stliport *portp = tty->driver_data; |
1f8ec435 | 1122 | struct stlibrd *brdp; |
4ac4360b | 1123 | asyport_t aport; |
1da177e4 | 1124 | |
4ac4360b AC |
1125 | if (portp == NULL) |
1126 | return -ENODEV; | |
1328d737 | 1127 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1128 | return -ENODEV; |
1da177e4 | 1129 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1130 | if (brdp == NULL) |
1131 | return -ENODEV; | |
1da177e4 | 1132 | |
d18a750f | 1133 | stli_mkasyport(tty, portp, &aport, tty->termios); |
1da177e4 LT |
1134 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); |
1135 | } | |
1136 | ||
1137 | /*****************************************************************************/ | |
1138 | ||
31f35939 AC |
1139 | static int stli_carrier_raised(struct tty_port *port) |
1140 | { | |
1141 | struct stliport *portp = container_of(port, struct stliport, port); | |
1142 | return (portp->sigs & TIOCM_CD) ? 1 : 0; | |
1143 | } | |
1144 | ||
fcc8ac18 | 1145 | static void stli_dtr_rts(struct tty_port *port, int on) |
1da177e4 | 1146 | { |
2a6eadbd AC |
1147 | struct stliport *portp = container_of(port, struct stliport, port); |
1148 | struct stlibrd *brdp = stli_brds[portp->brdnr]; | |
fcc8ac18 | 1149 | stli_mkasysigs(&portp->asig, on, on); |
2a6eadbd AC |
1150 | if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, |
1151 | sizeof(asysigs_t), 0) < 0) | |
fcc8ac18 | 1152 | printk(KERN_WARNING "istallion: dtr set failed.\n"); |
1da177e4 LT |
1153 | } |
1154 | ||
2a6eadbd | 1155 | |
1da177e4 LT |
1156 | /*****************************************************************************/ |
1157 | ||
1158 | /* | |
1159 | * Write routine. Take the data and put it in the shared memory ring | |
1160 | * queue. If port is not already sending chars then need to mark the | |
1161 | * service bits for this port. | |
1162 | */ | |
1163 | ||
1164 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1165 | { | |
4ac4360b AC |
1166 | cdkasy_t __iomem *ap; |
1167 | cdkhdr_t __iomem *hdrp; | |
1168 | unsigned char __iomem *bits; | |
1169 | unsigned char __iomem *shbuf; | |
1170 | unsigned char *chbuf; | |
1f8ec435 JS |
1171 | struct stliport *portp; |
1172 | struct stlibrd *brdp; | |
4ac4360b AC |
1173 | unsigned int len, stlen, head, tail, size; |
1174 | unsigned long flags; | |
1da177e4 | 1175 | |
1da177e4 LT |
1176 | if (tty == stli_txcooktty) |
1177 | stli_flushchars(tty); | |
1178 | portp = tty->driver_data; | |
4ac4360b AC |
1179 | if (portp == NULL) |
1180 | return 0; | |
1328d737 | 1181 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1182 | return 0; |
1da177e4 | 1183 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1184 | if (brdp == NULL) |
1185 | return 0; | |
1da177e4 LT |
1186 | chbuf = (unsigned char *) buf; |
1187 | ||
1188 | /* | |
1189 | * All data is now local, shove as much as possible into shared memory. | |
1190 | */ | |
4ac4360b | 1191 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1192 | EBRDENABLE(brdp); |
4ac4360b AC |
1193 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1194 | head = (unsigned int) readw(&ap->txq.head); | |
1195 | tail = (unsigned int) readw(&ap->txq.tail); | |
1196 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1197 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1198 | size = portp->txsize; |
1199 | if (head >= tail) { | |
1200 | len = size - (head - tail) - 1; | |
1201 | stlen = size - head; | |
1202 | } else { | |
1203 | len = tail - head - 1; | |
1204 | stlen = len; | |
1205 | } | |
1206 | ||
a3f8d9d5 | 1207 | len = min(len, (unsigned int)count); |
1da177e4 | 1208 | count = 0; |
4ac4360b | 1209 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1210 | |
1211 | while (len > 0) { | |
a3f8d9d5 | 1212 | stlen = min(len, stlen); |
4ac4360b | 1213 | memcpy_toio(shbuf + head, chbuf, stlen); |
1da177e4 LT |
1214 | chbuf += stlen; |
1215 | len -= stlen; | |
1216 | count += stlen; | |
1217 | head += stlen; | |
1218 | if (head >= size) { | |
1219 | head = 0; | |
1220 | stlen = tail; | |
1221 | } | |
1222 | } | |
1223 | ||
4ac4360b AC |
1224 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1225 | writew(head, &ap->txq.head); | |
1da177e4 | 1226 | if (test_bit(ST_TXBUSY, &portp->state)) { |
4ac4360b AC |
1227 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1228 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1229 | } |
4ac4360b AC |
1230 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1231 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1232 | portp->portidx; |
4ac4360b | 1233 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1234 | set_bit(ST_TXBUSY, &portp->state); |
1235 | EBRDDISABLE(brdp); | |
4ac4360b | 1236 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1237 | |
1238 | return(count); | |
1239 | } | |
1240 | ||
1241 | /*****************************************************************************/ | |
1242 | ||
1243 | /* | |
1244 | * Output a single character. We put it into a temporary local buffer | |
1245 | * (for speed) then write out that buffer when the flushchars routine | |
1246 | * is called. There is a safety catch here so that if some other port | |
1247 | * writes chars before the current buffer has been, then we write them | |
1248 | * first them do the new ports. | |
1249 | */ | |
1250 | ||
42a77a1b | 1251 | static int stli_putchar(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1252 | { |
1da177e4 | 1253 | if (tty != stli_txcooktty) { |
4ac4360b | 1254 | if (stli_txcooktty != NULL) |
1da177e4 LT |
1255 | stli_flushchars(stli_txcooktty); |
1256 | stli_txcooktty = tty; | |
1257 | } | |
1258 | ||
1259 | stli_txcookbuf[stli_txcooksize++] = ch; | |
42a77a1b | 1260 | return 0; |
1da177e4 LT |
1261 | } |
1262 | ||
1263 | /*****************************************************************************/ | |
1264 | ||
1265 | /* | |
1266 | * Transfer characters from the local TX cooking buffer to the board. | |
1267 | * We sort of ignore the tty that gets passed in here. We rely on the | |
1268 | * info stored with the TX cook buffer to tell us which port to flush | |
1269 | * the data on. In any case we clean out the TX cook buffer, for re-use | |
1270 | * by someone else. | |
1271 | */ | |
1272 | ||
1273 | static void stli_flushchars(struct tty_struct *tty) | |
1274 | { | |
4ac4360b AC |
1275 | cdkhdr_t __iomem *hdrp; |
1276 | unsigned char __iomem *bits; | |
1277 | cdkasy_t __iomem *ap; | |
1278 | struct tty_struct *cooktty; | |
1f8ec435 JS |
1279 | struct stliport *portp; |
1280 | struct stlibrd *brdp; | |
4ac4360b AC |
1281 | unsigned int len, stlen, head, tail, size, count, cooksize; |
1282 | unsigned char *buf; | |
1283 | unsigned char __iomem *shbuf; | |
1284 | unsigned long flags; | |
1da177e4 LT |
1285 | |
1286 | cooksize = stli_txcooksize; | |
1287 | cooktty = stli_txcooktty; | |
1288 | stli_txcooksize = 0; | |
1289 | stli_txcookrealsize = 0; | |
4ac4360b | 1290 | stli_txcooktty = NULL; |
1da177e4 | 1291 | |
4ac4360b | 1292 | if (cooktty == NULL) |
1da177e4 LT |
1293 | return; |
1294 | if (tty != cooktty) | |
1295 | tty = cooktty; | |
1296 | if (cooksize == 0) | |
1297 | return; | |
1298 | ||
1299 | portp = tty->driver_data; | |
4ac4360b | 1300 | if (portp == NULL) |
1da177e4 | 1301 | return; |
1328d737 | 1302 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1303 | return; |
1304 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1305 | if (brdp == NULL) |
1da177e4 LT |
1306 | return; |
1307 | ||
4ac4360b | 1308 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
1309 | EBRDENABLE(brdp); |
1310 | ||
4ac4360b AC |
1311 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1312 | head = (unsigned int) readw(&ap->txq.head); | |
1313 | tail = (unsigned int) readw(&ap->txq.tail); | |
1314 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1315 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1316 | size = portp->txsize; |
1317 | if (head >= tail) { | |
1318 | len = size - (head - tail) - 1; | |
1319 | stlen = size - head; | |
1320 | } else { | |
1321 | len = tail - head - 1; | |
1322 | stlen = len; | |
1323 | } | |
1324 | ||
a3f8d9d5 | 1325 | len = min(len, cooksize); |
1da177e4 | 1326 | count = 0; |
29756fa3 | 1327 | shbuf = EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1328 | buf = stli_txcookbuf; |
1329 | ||
1330 | while (len > 0) { | |
a3f8d9d5 | 1331 | stlen = min(len, stlen); |
4ac4360b | 1332 | memcpy_toio(shbuf + head, buf, stlen); |
1da177e4 LT |
1333 | buf += stlen; |
1334 | len -= stlen; | |
1335 | count += stlen; | |
1336 | head += stlen; | |
1337 | if (head >= size) { | |
1338 | head = 0; | |
1339 | stlen = tail; | |
1340 | } | |
1341 | } | |
1342 | ||
4ac4360b AC |
1343 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1344 | writew(head, &ap->txq.head); | |
1da177e4 LT |
1345 | |
1346 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
4ac4360b AC |
1347 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1348 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1349 | } |
4ac4360b AC |
1350 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1351 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1352 | portp->portidx; |
4ac4360b | 1353 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1354 | set_bit(ST_TXBUSY, &portp->state); |
1355 | ||
1356 | EBRDDISABLE(brdp); | |
4ac4360b | 1357 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1358 | } |
1359 | ||
1360 | /*****************************************************************************/ | |
1361 | ||
1362 | static int stli_writeroom(struct tty_struct *tty) | |
1363 | { | |
4ac4360b | 1364 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1365 | struct stliport *portp; |
1366 | struct stlibrd *brdp; | |
4ac4360b AC |
1367 | unsigned int head, tail, len; |
1368 | unsigned long flags; | |
1da177e4 | 1369 | |
1da177e4 LT |
1370 | if (tty == stli_txcooktty) { |
1371 | if (stli_txcookrealsize != 0) { | |
1372 | len = stli_txcookrealsize - stli_txcooksize; | |
4ac4360b | 1373 | return len; |
1da177e4 LT |
1374 | } |
1375 | } | |
1376 | ||
1377 | portp = tty->driver_data; | |
4ac4360b AC |
1378 | if (portp == NULL) |
1379 | return 0; | |
1328d737 | 1380 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1381 | return 0; |
1da177e4 | 1382 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1383 | if (brdp == NULL) |
1384 | return 0; | |
1da177e4 | 1385 | |
4ac4360b | 1386 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1387 | EBRDENABLE(brdp); |
4ac4360b AC |
1388 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1389 | head = (unsigned int) readw(&rp->head); | |
1390 | tail = (unsigned int) readw(&rp->tail); | |
1391 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1392 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1393 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); |
1394 | len--; | |
1395 | EBRDDISABLE(brdp); | |
4ac4360b | 1396 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1397 | |
1398 | if (tty == stli_txcooktty) { | |
1399 | stli_txcookrealsize = len; | |
1400 | len -= stli_txcooksize; | |
1401 | } | |
4ac4360b | 1402 | return len; |
1da177e4 LT |
1403 | } |
1404 | ||
1405 | /*****************************************************************************/ | |
1406 | ||
1407 | /* | |
1408 | * Return the number of characters in the transmit buffer. Normally we | |
1409 | * will return the number of chars in the shared memory ring queue. | |
1410 | * We need to kludge around the case where the shared memory buffer is | |
1411 | * empty but not all characters have drained yet, for this case just | |
1412 | * return that there is 1 character in the buffer! | |
1413 | */ | |
1414 | ||
1415 | static int stli_charsinbuffer(struct tty_struct *tty) | |
1416 | { | |
4ac4360b | 1417 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1418 | struct stliport *portp; |
1419 | struct stlibrd *brdp; | |
4ac4360b AC |
1420 | unsigned int head, tail, len; |
1421 | unsigned long flags; | |
1da177e4 | 1422 | |
1da177e4 LT |
1423 | if (tty == stli_txcooktty) |
1424 | stli_flushchars(tty); | |
1425 | portp = tty->driver_data; | |
4ac4360b AC |
1426 | if (portp == NULL) |
1427 | return 0; | |
1328d737 | 1428 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1429 | return 0; |
1da177e4 | 1430 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1431 | if (brdp == NULL) |
1432 | return 0; | |
1da177e4 | 1433 | |
4ac4360b | 1434 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1435 | EBRDENABLE(brdp); |
4ac4360b AC |
1436 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1437 | head = (unsigned int) readw(&rp->head); | |
1438 | tail = (unsigned int) readw(&rp->tail); | |
1439 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1440 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1441 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); |
1442 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) | |
1443 | len = 1; | |
1444 | EBRDDISABLE(brdp); | |
4ac4360b | 1445 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 | 1446 | |
4ac4360b | 1447 | return len; |
1da177e4 LT |
1448 | } |
1449 | ||
1450 | /*****************************************************************************/ | |
1451 | ||
1452 | /* | |
1453 | * Generate the serial struct info. | |
1454 | */ | |
1455 | ||
1f8ec435 | 1456 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp) |
1da177e4 | 1457 | { |
4ac4360b | 1458 | struct serial_struct sio; |
1f8ec435 | 1459 | struct stlibrd *brdp; |
1da177e4 LT |
1460 | |
1461 | memset(&sio, 0, sizeof(struct serial_struct)); | |
1462 | sio.type = PORT_UNKNOWN; | |
1463 | sio.line = portp->portnr; | |
1464 | sio.irq = 0; | |
b02f5ad6 | 1465 | sio.flags = portp->port.flags; |
1da177e4 | 1466 | sio.baud_base = portp->baud_base; |
a6614999 | 1467 | sio.close_delay = portp->port.close_delay; |
1da177e4 LT |
1468 | sio.closing_wait = portp->closing_wait; |
1469 | sio.custom_divisor = portp->custom_divisor; | |
1470 | sio.xmit_fifo_size = 0; | |
1471 | sio.hub6 = 0; | |
1472 | ||
1473 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1474 | if (brdp != NULL) |
1da177e4 LT |
1475 | sio.port = brdp->iobase; |
1476 | ||
1477 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? | |
1478 | -EFAULT : 0; | |
1479 | } | |
1480 | ||
1481 | /*****************************************************************************/ | |
1482 | ||
1483 | /* | |
1484 | * Set port according to the serial struct info. | |
1485 | * At this point we do not do any auto-configure stuff, so we will | |
1486 | * just quietly ignore any requests to change irq, etc. | |
1487 | */ | |
1488 | ||
d18a750f | 1489 | static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp) |
1da177e4 | 1490 | { |
4ac4360b AC |
1491 | struct serial_struct sio; |
1492 | int rc; | |
d18a750f | 1493 | struct stliport *portp = tty->driver_data; |
1da177e4 LT |
1494 | |
1495 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) | |
1496 | return -EFAULT; | |
1497 | if (!capable(CAP_SYS_ADMIN)) { | |
1498 | if ((sio.baud_base != portp->baud_base) || | |
a6614999 | 1499 | (sio.close_delay != portp->port.close_delay) || |
1da177e4 | 1500 | ((sio.flags & ~ASYNC_USR_MASK) != |
b02f5ad6 | 1501 | (portp->port.flags & ~ASYNC_USR_MASK))) |
4ac4360b | 1502 | return -EPERM; |
1da177e4 LT |
1503 | } |
1504 | ||
b02f5ad6 | 1505 | portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) | |
1da177e4 LT |
1506 | (sio.flags & ASYNC_USR_MASK); |
1507 | portp->baud_base = sio.baud_base; | |
a6614999 | 1508 | portp->port.close_delay = sio.close_delay; |
1da177e4 LT |
1509 | portp->closing_wait = sio.closing_wait; |
1510 | portp->custom_divisor = sio.custom_divisor; | |
1511 | ||
d18a750f | 1512 | if ((rc = stli_setport(tty)) < 0) |
4ac4360b AC |
1513 | return rc; |
1514 | return 0; | |
1da177e4 LT |
1515 | } |
1516 | ||
1517 | /*****************************************************************************/ | |
1518 | ||
1519 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) | |
1520 | { | |
1f8ec435 JS |
1521 | struct stliport *portp = tty->driver_data; |
1522 | struct stlibrd *brdp; | |
1da177e4 LT |
1523 | int rc; |
1524 | ||
4ac4360b AC |
1525 | if (portp == NULL) |
1526 | return -ENODEV; | |
1328d737 | 1527 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1528 | return 0; |
1da177e4 | 1529 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1530 | if (brdp == NULL) |
1531 | return 0; | |
1da177e4 | 1532 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1533 | return -EIO; |
1da177e4 LT |
1534 | |
1535 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, | |
1536 | &portp->asig, sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1537 | return rc; |
1da177e4 LT |
1538 | |
1539 | return stli_mktiocm(portp->asig.sigvalue); | |
1540 | } | |
1541 | ||
1542 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, | |
1543 | unsigned int set, unsigned int clear) | |
1544 | { | |
1f8ec435 JS |
1545 | struct stliport *portp = tty->driver_data; |
1546 | struct stlibrd *brdp; | |
1da177e4 LT |
1547 | int rts = -1, dtr = -1; |
1548 | ||
4ac4360b AC |
1549 | if (portp == NULL) |
1550 | return -ENODEV; | |
1328d737 | 1551 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1552 | return 0; |
1da177e4 | 1553 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1554 | if (brdp == NULL) |
1555 | return 0; | |
1da177e4 | 1556 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1557 | return -EIO; |
1da177e4 LT |
1558 | |
1559 | if (set & TIOCM_RTS) | |
1560 | rts = 1; | |
1561 | if (set & TIOCM_DTR) | |
1562 | dtr = 1; | |
1563 | if (clear & TIOCM_RTS) | |
1564 | rts = 0; | |
1565 | if (clear & TIOCM_DTR) | |
1566 | dtr = 0; | |
1567 | ||
1568 | stli_mkasysigs(&portp->asig, dtr, rts); | |
1569 | ||
1570 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1571 | sizeof(asysigs_t), 0); | |
1572 | } | |
1573 | ||
1574 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1575 | { | |
1f8ec435 JS |
1576 | struct stliport *portp; |
1577 | struct stlibrd *brdp; | |
4ac4360b | 1578 | int rc; |
1da177e4 LT |
1579 | void __user *argp = (void __user *)arg; |
1580 | ||
1da177e4 | 1581 | portp = tty->driver_data; |
4ac4360b AC |
1582 | if (portp == NULL) |
1583 | return -ENODEV; | |
1328d737 | 1584 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1585 | return 0; |
1da177e4 | 1586 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1587 | if (brdp == NULL) |
1588 | return 0; | |
1da177e4 LT |
1589 | |
1590 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && | |
1591 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { | |
1592 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
4ac4360b | 1593 | return -EIO; |
1da177e4 LT |
1594 | } |
1595 | ||
1596 | rc = 0; | |
1597 | ||
1598 | switch (cmd) { | |
1da177e4 LT |
1599 | case TIOCGSERIAL: |
1600 | rc = stli_getserial(portp, argp); | |
1601 | break; | |
1602 | case TIOCSSERIAL: | |
d18a750f | 1603 | rc = stli_setserial(tty, argp); |
1da177e4 LT |
1604 | break; |
1605 | case STL_GETPFLAG: | |
1606 | rc = put_user(portp->pflag, (unsigned __user *)argp); | |
1607 | break; | |
1608 | case STL_SETPFLAG: | |
1609 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) | |
d18a750f | 1610 | stli_setport(tty); |
1da177e4 LT |
1611 | break; |
1612 | case COM_GETPORTSTATS: | |
d18a750f | 1613 | rc = stli_getportstats(tty, portp, argp); |
1da177e4 LT |
1614 | break; |
1615 | case COM_CLRPORTSTATS: | |
1616 | rc = stli_clrportstats(portp, argp); | |
1617 | break; | |
1618 | case TIOCSERCONFIG: | |
1619 | case TIOCSERGWILD: | |
1620 | case TIOCSERSWILD: | |
1621 | case TIOCSERGETLSR: | |
1622 | case TIOCSERGSTRUCT: | |
1623 | case TIOCSERGETMULTI: | |
1624 | case TIOCSERSETMULTI: | |
1625 | default: | |
1626 | rc = -ENOIOCTLCMD; | |
1627 | break; | |
1628 | } | |
1629 | ||
4ac4360b | 1630 | return rc; |
1da177e4 LT |
1631 | } |
1632 | ||
1633 | /*****************************************************************************/ | |
1634 | ||
1635 | /* | |
1636 | * This routine assumes that we have user context and can sleep. | |
1637 | * Looks like it is true for the current ttys implementation..!! | |
1638 | */ | |
1639 | ||
606d099c | 1640 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old) |
1da177e4 | 1641 | { |
1f8ec435 JS |
1642 | struct stliport *portp; |
1643 | struct stlibrd *brdp; | |
606d099c | 1644 | struct ktermios *tiosp; |
4ac4360b | 1645 | asyport_t aport; |
1da177e4 | 1646 | |
1da177e4 | 1647 | portp = tty->driver_data; |
4ac4360b | 1648 | if (portp == NULL) |
1da177e4 | 1649 | return; |
1328d737 | 1650 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1651 | return; |
1652 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1653 | if (brdp == NULL) |
1da177e4 LT |
1654 | return; |
1655 | ||
1656 | tiosp = tty->termios; | |
1da177e4 | 1657 | |
d18a750f | 1658 | stli_mkasyport(tty, portp, &aport, tiosp); |
1da177e4 LT |
1659 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); |
1660 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); | |
1661 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1662 | sizeof(asysigs_t), 0); | |
1663 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) | |
1664 | tty->hw_stopped = 0; | |
1665 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) | |
b02f5ad6 | 1666 | wake_up_interruptible(&portp->port.open_wait); |
1da177e4 LT |
1667 | } |
1668 | ||
1669 | /*****************************************************************************/ | |
1670 | ||
1671 | /* | |
1672 | * Attempt to flow control who ever is sending us data. We won't really | |
1673 | * do any flow control action here. We can't directly, and even if we | |
1674 | * wanted to we would have to send a command to the slave. The slave | |
1675 | * knows how to flow control, and will do so when its buffers reach its | |
1676 | * internal high water marks. So what we will do is set a local state | |
1677 | * bit that will stop us sending any RX data up from the poll routine | |
1678 | * (which is the place where RX data from the slave is handled). | |
1679 | */ | |
1680 | ||
1681 | static void stli_throttle(struct tty_struct *tty) | |
1682 | { | |
1f8ec435 | 1683 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1684 | if (portp == NULL) |
1da177e4 | 1685 | return; |
1da177e4 LT |
1686 | set_bit(ST_RXSTOP, &portp->state); |
1687 | } | |
1688 | ||
1689 | /*****************************************************************************/ | |
1690 | ||
1691 | /* | |
1692 | * Unflow control the device sending us data... That means that all | |
1693 | * we have to do is clear the RXSTOP state bit. The next poll call | |
1694 | * will then be able to pass the RX data back up. | |
1695 | */ | |
1696 | ||
1697 | static void stli_unthrottle(struct tty_struct *tty) | |
1698 | { | |
1f8ec435 | 1699 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1700 | if (portp == NULL) |
1da177e4 | 1701 | return; |
1da177e4 LT |
1702 | clear_bit(ST_RXSTOP, &portp->state); |
1703 | } | |
1704 | ||
1705 | /*****************************************************************************/ | |
1706 | ||
1707 | /* | |
4ac4360b | 1708 | * Stop the transmitter. |
1da177e4 LT |
1709 | */ |
1710 | ||
1711 | static void stli_stop(struct tty_struct *tty) | |
1712 | { | |
1da177e4 LT |
1713 | } |
1714 | ||
1715 | /*****************************************************************************/ | |
1716 | ||
1717 | /* | |
4ac4360b | 1718 | * Start the transmitter again. |
1da177e4 LT |
1719 | */ |
1720 | ||
1721 | static void stli_start(struct tty_struct *tty) | |
1722 | { | |
1da177e4 LT |
1723 | } |
1724 | ||
1725 | /*****************************************************************************/ | |
1726 | ||
1da177e4 LT |
1727 | /* |
1728 | * Hangup this port. This is pretty much like closing the port, only | |
1729 | * a little more brutal. No waiting for data to drain. Shutdown the | |
1730 | * port and maybe drop signals. This is rather tricky really. We want | |
1731 | * to close the port as well. | |
1732 | */ | |
1733 | ||
1734 | static void stli_hangup(struct tty_struct *tty) | |
1735 | { | |
1f8ec435 JS |
1736 | struct stliport *portp; |
1737 | struct stlibrd *brdp; | |
2a6eadbd | 1738 | struct tty_port *port; |
4ac4360b | 1739 | unsigned long 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 | 1748 | return; |
2a6eadbd | 1749 | port = &portp->port; |
1da177e4 | 1750 | |
2a6eadbd AC |
1751 | spin_lock_irqsave(&port->lock, flags); |
1752 | port->flags &= ~ASYNC_INITIALIZED; | |
1753 | spin_unlock_irqrestore(&port->lock, flags); | |
1da177e4 | 1754 | |
4ac4360b | 1755 | if (!test_bit(ST_CLOSING, &portp->state)) |
1da177e4 | 1756 | stli_rawclose(brdp, portp, 0, 0); |
4ac4360b AC |
1757 | |
1758 | spin_lock_irqsave(&stli_lock, flags); | |
1da177e4 LT |
1759 | if (tty->termios->c_cflag & HUPCL) { |
1760 | stli_mkasysigs(&portp->asig, 0, 0); | |
1761 | if (test_bit(ST_CMDING, &portp->state)) { | |
1762 | set_bit(ST_DOSIGS, &portp->state); | |
1763 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1764 | set_bit(ST_DOFLUSHRX, &portp->state); | |
1765 | } else { | |
1766 | stli_sendcmd(brdp, portp, A_SETSIGNALSF, | |
1767 | &portp->asig, sizeof(asysigs_t), 0); | |
1768 | } | |
1769 | } | |
1da177e4 LT |
1770 | |
1771 | clear_bit(ST_TXBUSY, &portp->state); | |
1772 | clear_bit(ST_RXSTOP, &portp->state); | |
1773 | set_bit(TTY_IO_ERROR, &tty->flags); | |
4ac4360b AC |
1774 | spin_unlock_irqrestore(&stli_lock, flags); |
1775 | ||
2a6eadbd | 1776 | tty_port_hangup(port); |
1da177e4 LT |
1777 | } |
1778 | ||
1779 | /*****************************************************************************/ | |
1780 | ||
1781 | /* | |
1782 | * Flush characters from the lower buffer. We may not have user context | |
1783 | * so we cannot sleep waiting for it to complete. Also we need to check | |
1784 | * if there is chars for this port in the TX cook buffer, and flush them | |
1785 | * as well. | |
1786 | */ | |
1787 | ||
1788 | static void stli_flushbuffer(struct tty_struct *tty) | |
1789 | { | |
1f8ec435 JS |
1790 | struct stliport *portp; |
1791 | struct stlibrd *brdp; | |
4ac4360b | 1792 | unsigned long ftype, flags; |
1da177e4 | 1793 | |
1da177e4 | 1794 | portp = tty->driver_data; |
4ac4360b | 1795 | if (portp == NULL) |
1da177e4 | 1796 | return; |
1328d737 | 1797 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1798 | return; |
1799 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1800 | if (brdp == NULL) |
1da177e4 LT |
1801 | return; |
1802 | ||
4ac4360b | 1803 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1804 | if (tty == stli_txcooktty) { |
4ac4360b | 1805 | stli_txcooktty = NULL; |
1da177e4 LT |
1806 | stli_txcooksize = 0; |
1807 | stli_txcookrealsize = 0; | |
1808 | } | |
1809 | if (test_bit(ST_CMDING, &portp->state)) { | |
1810 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1811 | } else { | |
1812 | ftype = FLUSHTX; | |
1813 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { | |
1814 | ftype |= FLUSHRX; | |
1815 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
1816 | } | |
4ac4360b | 1817 | __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); |
1da177e4 | 1818 | } |
4ac4360b AC |
1819 | spin_unlock_irqrestore(&brd_lock, flags); |
1820 | tty_wakeup(tty); | |
1da177e4 LT |
1821 | } |
1822 | ||
1823 | /*****************************************************************************/ | |
1824 | ||
9e98966c | 1825 | static int stli_breakctl(struct tty_struct *tty, int state) |
1da177e4 | 1826 | { |
1f8ec435 JS |
1827 | struct stlibrd *brdp; |
1828 | struct stliport *portp; | |
1da177e4 | 1829 | long arg; |
1da177e4 | 1830 | |
1da177e4 | 1831 | portp = tty->driver_data; |
4ac4360b | 1832 | if (portp == NULL) |
9e98966c | 1833 | return -EINVAL; |
1328d737 | 1834 | if (portp->brdnr >= stli_nrbrds) |
9e98966c | 1835 | return -EINVAL; |
1da177e4 | 1836 | brdp = stli_brds[portp->brdnr]; |
4ac4360b | 1837 | if (brdp == NULL) |
9e98966c | 1838 | return -EINVAL; |
1da177e4 | 1839 | |
1da177e4 LT |
1840 | arg = (state == -1) ? BREAKON : BREAKOFF; |
1841 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); | |
9e98966c | 1842 | return 0; |
1da177e4 LT |
1843 | } |
1844 | ||
1845 | /*****************************************************************************/ | |
1846 | ||
1847 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) | |
1848 | { | |
1f8ec435 | 1849 | struct stliport *portp; |
4ac4360b | 1850 | unsigned long tend; |
1da177e4 | 1851 | |
1da177e4 | 1852 | portp = tty->driver_data; |
4ac4360b | 1853 | if (portp == NULL) |
1da177e4 LT |
1854 | return; |
1855 | ||
1856 | if (timeout == 0) | |
1857 | timeout = HZ; | |
1858 | tend = jiffies + timeout; | |
1859 | ||
1860 | while (test_bit(ST_TXBUSY, &portp->state)) { | |
1861 | if (signal_pending(current)) | |
1862 | break; | |
1863 | msleep_interruptible(20); | |
1864 | if (time_after_eq(jiffies, tend)) | |
1865 | break; | |
1866 | } | |
1867 | } | |
1868 | ||
1869 | /*****************************************************************************/ | |
1870 | ||
1871 | static void stli_sendxchar(struct tty_struct *tty, char ch) | |
1872 | { | |
1f8ec435 JS |
1873 | struct stlibrd *brdp; |
1874 | struct stliport *portp; | |
1da177e4 LT |
1875 | asyctrl_t actrl; |
1876 | ||
1da177e4 | 1877 | portp = tty->driver_data; |
4ac4360b | 1878 | if (portp == NULL) |
1da177e4 | 1879 | return; |
1328d737 | 1880 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1881 | return; |
1882 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1883 | if (brdp == NULL) |
1da177e4 LT |
1884 | return; |
1885 | ||
1886 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
1887 | if (ch == STOP_CHAR(tty)) { | |
1888 | actrl.rxctrl = CT_STOPFLOW; | |
1889 | } else if (ch == START_CHAR(tty)) { | |
1890 | actrl.rxctrl = CT_STARTFLOW; | |
1891 | } else { | |
1892 | actrl.txctrl = CT_SENDCHR; | |
1893 | actrl.tximdch = ch; | |
1894 | } | |
1da177e4 LT |
1895 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
1896 | } | |
1897 | ||
5bd6de7d | 1898 | static void stli_portinfo(struct seq_file *m, struct stlibrd *brdp, struct stliport *portp, int portnr) |
1da177e4 | 1899 | { |
5bd6de7d AD |
1900 | char *uart; |
1901 | int rc; | |
1da177e4 | 1902 | |
d18a750f | 1903 | rc = stli_portcmdstats(NULL, portp); |
1da177e4 LT |
1904 | |
1905 | uart = "UNKNOWN"; | |
1906 | if (brdp->state & BST_STARTED) { | |
1907 | switch (stli_comstats.hwid) { | |
4ac4360b AC |
1908 | case 0: uart = "2681"; break; |
1909 | case 1: uart = "SC26198"; break; | |
1910 | default:uart = "CD1400"; break; | |
1da177e4 LT |
1911 | } |
1912 | } | |
5bd6de7d | 1913 | seq_printf(m, "%d: uart:%s ", portnr, uart); |
1da177e4 LT |
1914 | |
1915 | if ((brdp->state & BST_STARTED) && (rc >= 0)) { | |
5bd6de7d AD |
1916 | char sep; |
1917 | ||
1918 | seq_printf(m, "tx:%d rx:%d", (int) stli_comstats.txtotal, | |
1da177e4 LT |
1919 | (int) stli_comstats.rxtotal); |
1920 | ||
1921 | if (stli_comstats.rxframing) | |
5bd6de7d | 1922 | seq_printf(m, " fe:%d", |
1da177e4 LT |
1923 | (int) stli_comstats.rxframing); |
1924 | if (stli_comstats.rxparity) | |
5bd6de7d | 1925 | seq_printf(m, " pe:%d", |
1da177e4 LT |
1926 | (int) stli_comstats.rxparity); |
1927 | if (stli_comstats.rxbreaks) | |
5bd6de7d | 1928 | seq_printf(m, " brk:%d", |
1da177e4 LT |
1929 | (int) stli_comstats.rxbreaks); |
1930 | if (stli_comstats.rxoverrun) | |
5bd6de7d | 1931 | seq_printf(m, " oe:%d", |
1da177e4 LT |
1932 | (int) stli_comstats.rxoverrun); |
1933 | ||
5bd6de7d AD |
1934 | sep = ' '; |
1935 | if (stli_comstats.signals & TIOCM_RTS) { | |
1936 | seq_printf(m, "%c%s", sep, "RTS"); | |
1937 | sep = '|'; | |
1938 | } | |
1939 | if (stli_comstats.signals & TIOCM_CTS) { | |
1940 | seq_printf(m, "%c%s", sep, "CTS"); | |
1941 | sep = '|'; | |
1942 | } | |
1943 | if (stli_comstats.signals & TIOCM_DTR) { | |
1944 | seq_printf(m, "%c%s", sep, "DTR"); | |
1945 | sep = '|'; | |
1946 | } | |
1947 | if (stli_comstats.signals & TIOCM_CD) { | |
1948 | seq_printf(m, "%c%s", sep, "DCD"); | |
1949 | sep = '|'; | |
1950 | } | |
1951 | if (stli_comstats.signals & TIOCM_DSR) { | |
1952 | seq_printf(m, "%c%s", sep, "DSR"); | |
1953 | sep = '|'; | |
1954 | } | |
1da177e4 | 1955 | } |
5bd6de7d | 1956 | seq_putc(m, '\n'); |
1da177e4 LT |
1957 | } |
1958 | ||
1959 | /*****************************************************************************/ | |
1960 | ||
1961 | /* | |
1962 | * Port info, read from the /proc file system. | |
1963 | */ | |
1964 | ||
5bd6de7d | 1965 | static int stli_proc_show(struct seq_file *m, void *v) |
1da177e4 | 1966 | { |
1f8ec435 JS |
1967 | struct stlibrd *brdp; |
1968 | struct stliport *portp; | |
1328d737 | 1969 | unsigned int brdnr, portnr, totalport; |
1da177e4 | 1970 | |
1da177e4 | 1971 | totalport = 0; |
5bd6de7d AD |
1972 | |
1973 | seq_printf(m, "%s: version %s\n", stli_drvtitle, stli_drvversion); | |
1da177e4 LT |
1974 | |
1975 | /* | |
1976 | * We scan through for each board, panel and port. The offset is | |
1977 | * calculated on the fly, and irrelevant ports are skipped. | |
1978 | */ | |
1979 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
1980 | brdp = stli_brds[brdnr]; | |
4ac4360b | 1981 | if (brdp == NULL) |
1da177e4 LT |
1982 | continue; |
1983 | if (brdp->state == 0) | |
1984 | continue; | |
1985 | ||
1da177e4 LT |
1986 | totalport = brdnr * STL_MAXPORTS; |
1987 | for (portnr = 0; (portnr < brdp->nrports); portnr++, | |
1988 | totalport++) { | |
1989 | portp = brdp->ports[portnr]; | |
4ac4360b | 1990 | if (portp == NULL) |
1da177e4 | 1991 | continue; |
5bd6de7d | 1992 | stli_portinfo(m, brdp, portp, totalport); |
1da177e4 LT |
1993 | } |
1994 | } | |
5bd6de7d AD |
1995 | return 0; |
1996 | } | |
1da177e4 | 1997 | |
5bd6de7d AD |
1998 | static int stli_proc_open(struct inode *inode, struct file *file) |
1999 | { | |
2000 | return single_open(file, stli_proc_show, NULL); | |
1da177e4 LT |
2001 | } |
2002 | ||
5bd6de7d AD |
2003 | static const struct file_operations stli_proc_fops = { |
2004 | .owner = THIS_MODULE, | |
2005 | .open = stli_proc_open, | |
2006 | .read = seq_read, | |
2007 | .llseek = seq_lseek, | |
2008 | .release = single_release, | |
2009 | }; | |
2010 | ||
1da177e4 LT |
2011 | /*****************************************************************************/ |
2012 | ||
2013 | /* | |
2014 | * Generic send command routine. This will send a message to the slave, | |
2015 | * of the specified type with the specified argument. Must be very | |
2016 | * careful of data that will be copied out from shared memory - | |
2017 | * containing command results. The command completion is all done from | |
2018 | * a poll routine that does not have user context. Therefore you cannot | |
2019 | * copy back directly into user space, or to the kernel stack of a | |
2020 | * process. This routine does not sleep, so can be called from anywhere. | |
4ac4360b AC |
2021 | * |
2022 | * The caller must hold the brd_lock (see also stli_sendcmd the usual | |
2023 | * entry point) | |
1da177e4 LT |
2024 | */ |
2025 | ||
1f8ec435 | 2026 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 2027 | { |
4ac4360b AC |
2028 | cdkhdr_t __iomem *hdrp; |
2029 | cdkctrl_t __iomem *cp; | |
2030 | unsigned char __iomem *bits; | |
1da177e4 LT |
2031 | |
2032 | if (test_bit(ST_CMDING, &portp->state)) { | |
a6614999 | 2033 | printk(KERN_ERR "istallion: command already busy, cmd=%x!\n", |
1da177e4 | 2034 | (int) cmd); |
1da177e4 LT |
2035 | return; |
2036 | } | |
2037 | ||
2038 | EBRDENABLE(brdp); | |
4ac4360b | 2039 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1da177e4 | 2040 | if (size > 0) { |
4ac4360b | 2041 | memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); |
1da177e4 LT |
2042 | if (copyback) { |
2043 | portp->argp = arg; | |
2044 | portp->argsize = size; | |
2045 | } | |
2046 | } | |
4ac4360b AC |
2047 | writel(0, &cp->status); |
2048 | writel(cmd, &cp->cmd); | |
2049 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
2050 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 2051 | portp->portidx; |
4ac4360b | 2052 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
2053 | set_bit(ST_CMDING, &portp->state); |
2054 | EBRDDISABLE(brdp); | |
4ac4360b AC |
2055 | } |
2056 | ||
1f8ec435 | 2057 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
4ac4360b AC |
2058 | { |
2059 | unsigned long flags; | |
2060 | ||
2061 | spin_lock_irqsave(&brd_lock, flags); | |
2062 | __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
2063 | spin_unlock_irqrestore(&brd_lock, flags); | |
1da177e4 LT |
2064 | } |
2065 | ||
2066 | /*****************************************************************************/ | |
2067 | ||
2068 | /* | |
2069 | * Read data from shared memory. This assumes that the shared memory | |
2070 | * is enabled and that interrupts are off. Basically we just empty out | |
2071 | * the shared memory buffer into the tty buffer. Must be careful to | |
2072 | * handle the case where we fill up the tty buffer, but still have | |
2073 | * more chars to unload. | |
2074 | */ | |
2075 | ||
1f8ec435 | 2076 | static void stli_read(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2077 | { |
4ac4360b AC |
2078 | cdkasyrq_t __iomem *rp; |
2079 | char __iomem *shbuf; | |
1da177e4 | 2080 | struct tty_struct *tty; |
4ac4360b AC |
2081 | unsigned int head, tail, size; |
2082 | unsigned int len, stlen; | |
1da177e4 LT |
2083 | |
2084 | if (test_bit(ST_RXSTOP, &portp->state)) | |
2085 | return; | |
d18a750f | 2086 | tty = tty_port_tty_get(&portp->port); |
4ac4360b | 2087 | if (tty == NULL) |
1da177e4 LT |
2088 | return; |
2089 | ||
4ac4360b AC |
2090 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2091 | head = (unsigned int) readw(&rp->head); | |
2092 | if (head != ((unsigned int) readw(&rp->head))) | |
2093 | head = (unsigned int) readw(&rp->head); | |
2094 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
2095 | size = portp->rxsize; |
2096 | if (head >= tail) { | |
2097 | len = head - tail; | |
2098 | stlen = len; | |
2099 | } else { | |
2100 | len = size - (tail - head); | |
2101 | stlen = size - tail; | |
2102 | } | |
2103 | ||
33f0f88f | 2104 | len = tty_buffer_request_room(tty, len); |
4ac4360b AC |
2105 | |
2106 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); | |
1da177e4 LT |
2107 | |
2108 | while (len > 0) { | |
4ac4360b AC |
2109 | unsigned char *cptr; |
2110 | ||
a3f8d9d5 | 2111 | stlen = min(len, stlen); |
4ac4360b AC |
2112 | tty_prepare_flip_string(tty, &cptr, stlen); |
2113 | memcpy_fromio(cptr, shbuf + tail, stlen); | |
1da177e4 LT |
2114 | len -= stlen; |
2115 | tail += stlen; | |
2116 | if (tail >= size) { | |
2117 | tail = 0; | |
2118 | stlen = head; | |
2119 | } | |
2120 | } | |
4ac4360b AC |
2121 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2122 | writew(tail, &rp->tail); | |
1da177e4 LT |
2123 | |
2124 | if (head != tail) | |
2125 | set_bit(ST_RXING, &portp->state); | |
2126 | ||
2127 | tty_schedule_flip(tty); | |
d18a750f | 2128 | tty_kref_put(tty); |
1da177e4 LT |
2129 | } |
2130 | ||
2131 | /*****************************************************************************/ | |
2132 | ||
2133 | /* | |
2134 | * Set up and carry out any delayed commands. There is only a small set | |
2135 | * of slave commands that can be done "off-level". So it is not too | |
2136 | * difficult to deal with them here. | |
2137 | */ | |
2138 | ||
1f8ec435 | 2139 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp) |
1da177e4 | 2140 | { |
4ac4360b | 2141 | int cmd; |
1da177e4 LT |
2142 | |
2143 | if (test_bit(ST_DOSIGS, &portp->state)) { | |
2144 | if (test_bit(ST_DOFLUSHTX, &portp->state) && | |
2145 | test_bit(ST_DOFLUSHRX, &portp->state)) | |
2146 | cmd = A_SETSIGNALSF; | |
2147 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) | |
2148 | cmd = A_SETSIGNALSFTX; | |
2149 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) | |
2150 | cmd = A_SETSIGNALSFRX; | |
2151 | else | |
2152 | cmd = A_SETSIGNALS; | |
2153 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2154 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2155 | clear_bit(ST_DOSIGS, &portp->state); | |
4ac4360b | 2156 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, |
1da177e4 | 2157 | sizeof(asysigs_t)); |
4ac4360b AC |
2158 | writel(0, &cp->status); |
2159 | writel(cmd, &cp->cmd); | |
1da177e4 LT |
2160 | set_bit(ST_CMDING, &portp->state); |
2161 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || | |
2162 | test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2163 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); | |
2164 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); | |
2165 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2166 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
4ac4360b AC |
2167 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); |
2168 | writel(0, &cp->status); | |
2169 | writel(A_FLUSH, &cp->cmd); | |
1da177e4 LT |
2170 | set_bit(ST_CMDING, &portp->state); |
2171 | } | |
2172 | } | |
2173 | ||
2174 | /*****************************************************************************/ | |
2175 | ||
2176 | /* | |
2177 | * Host command service checking. This handles commands or messages | |
2178 | * coming from the slave to the host. Must have board shared memory | |
2179 | * enabled and interrupts off when called. Notice that by servicing the | |
2180 | * read data last we don't need to change the shared memory pointer | |
2181 | * during processing (which is a slow IO operation). | |
2182 | * Return value indicates if this port is still awaiting actions from | |
2183 | * the slave (like open, command, or even TX data being sent). If 0 | |
2184 | * then port is still busy, otherwise no longer busy. | |
2185 | */ | |
2186 | ||
1f8ec435 | 2187 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2188 | { |
4ac4360b AC |
2189 | cdkasy_t __iomem *ap; |
2190 | cdkctrl_t __iomem *cp; | |
2191 | struct tty_struct *tty; | |
2192 | asynotify_t nt; | |
2193 | unsigned long oldsigs; | |
2194 | int rc, donerx; | |
2195 | ||
2196 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); | |
1da177e4 LT |
2197 | cp = &ap->ctrl; |
2198 | ||
2199 | /* | |
2200 | * Check if we are waiting for an open completion message. | |
2201 | */ | |
2202 | if (test_bit(ST_OPENING, &portp->state)) { | |
4ac4360b AC |
2203 | rc = readl(&cp->openarg); |
2204 | if (readb(&cp->open) == 0 && rc != 0) { | |
1da177e4 LT |
2205 | if (rc > 0) |
2206 | rc--; | |
4ac4360b | 2207 | writel(0, &cp->openarg); |
1da177e4 LT |
2208 | portp->rc = rc; |
2209 | clear_bit(ST_OPENING, &portp->state); | |
2210 | wake_up_interruptible(&portp->raw_wait); | |
2211 | } | |
2212 | } | |
2213 | ||
2214 | /* | |
2215 | * Check if we are waiting for a close completion message. | |
2216 | */ | |
2217 | if (test_bit(ST_CLOSING, &portp->state)) { | |
4ac4360b AC |
2218 | rc = (int) readl(&cp->closearg); |
2219 | if (readb(&cp->close) == 0 && rc != 0) { | |
1da177e4 LT |
2220 | if (rc > 0) |
2221 | rc--; | |
4ac4360b | 2222 | writel(0, &cp->closearg); |
1da177e4 LT |
2223 | portp->rc = rc; |
2224 | clear_bit(ST_CLOSING, &portp->state); | |
2225 | wake_up_interruptible(&portp->raw_wait); | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | /* | |
2230 | * Check if we are waiting for a command completion message. We may | |
2231 | * need to copy out the command results associated with this command. | |
2232 | */ | |
2233 | if (test_bit(ST_CMDING, &portp->state)) { | |
4ac4360b AC |
2234 | rc = readl(&cp->status); |
2235 | if (readl(&cp->cmd) == 0 && rc != 0) { | |
1da177e4 LT |
2236 | if (rc > 0) |
2237 | rc--; | |
4ac4360b AC |
2238 | if (portp->argp != NULL) { |
2239 | memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), | |
1da177e4 | 2240 | portp->argsize); |
4ac4360b | 2241 | portp->argp = NULL; |
1da177e4 | 2242 | } |
4ac4360b | 2243 | writel(0, &cp->status); |
1da177e4 LT |
2244 | portp->rc = rc; |
2245 | clear_bit(ST_CMDING, &portp->state); | |
2246 | stli_dodelaycmd(portp, cp); | |
2247 | wake_up_interruptible(&portp->raw_wait); | |
2248 | } | |
2249 | } | |
2250 | ||
2251 | /* | |
2252 | * Check for any notification messages ready. This includes lots of | |
2253 | * different types of events - RX chars ready, RX break received, | |
2254 | * TX data low or empty in the slave, modem signals changed state. | |
2255 | */ | |
2256 | donerx = 0; | |
2257 | ||
2258 | if (ap->notify) { | |
2259 | nt = ap->changed; | |
2260 | ap->notify = 0; | |
d18a750f | 2261 | tty = tty_port_tty_get(&portp->port); |
1da177e4 LT |
2262 | |
2263 | if (nt.signal & SG_DCD) { | |
2264 | oldsigs = portp->sigs; | |
2265 | portp->sigs = stli_mktiocm(nt.sigvalue); | |
2266 | clear_bit(ST_GETSIGS, &portp->state); | |
2267 | if ((portp->sigs & TIOCM_CD) && | |
2268 | ((oldsigs & TIOCM_CD) == 0)) | |
b02f5ad6 | 2269 | wake_up_interruptible(&portp->port.open_wait); |
1da177e4 LT |
2270 | if ((oldsigs & TIOCM_CD) && |
2271 | ((portp->sigs & TIOCM_CD) == 0)) { | |
b02f5ad6 | 2272 | if (portp->port.flags & ASYNC_CHECK_CD) { |
1da177e4 | 2273 | if (tty) |
cfccaeea | 2274 | tty_hangup(tty); |
1da177e4 LT |
2275 | } |
2276 | } | |
2277 | } | |
2278 | ||
2279 | if (nt.data & DT_TXEMPTY) | |
2280 | clear_bit(ST_TXBUSY, &portp->state); | |
2281 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { | |
4ac4360b AC |
2282 | if (tty != NULL) { |
2283 | tty_wakeup(tty); | |
2284 | EBRDENABLE(brdp); | |
1da177e4 LT |
2285 | } |
2286 | } | |
2287 | ||
2288 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { | |
4ac4360b | 2289 | if (tty != NULL) { |
33f0f88f | 2290 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
b02f5ad6 | 2291 | if (portp->port.flags & ASYNC_SAK) { |
33f0f88f AC |
2292 | do_SAK(tty); |
2293 | EBRDENABLE(brdp); | |
1da177e4 | 2294 | } |
33f0f88f | 2295 | tty_schedule_flip(tty); |
1da177e4 LT |
2296 | } |
2297 | } | |
d18a750f | 2298 | tty_kref_put(tty); |
1da177e4 LT |
2299 | |
2300 | if (nt.data & DT_RXBUSY) { | |
2301 | donerx++; | |
2302 | stli_read(brdp, portp); | |
2303 | } | |
2304 | } | |
2305 | ||
2306 | /* | |
2307 | * It might seem odd that we are checking for more RX chars here. | |
2308 | * But, we need to handle the case where the tty buffer was previously | |
2309 | * filled, but we had more characters to pass up. The slave will not | |
2310 | * send any more RX notify messages until the RX buffer has been emptied. | |
2311 | * But it will leave the service bits on (since the buffer is not empty). | |
2312 | * So from here we can try to process more RX chars. | |
2313 | */ | |
2314 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { | |
2315 | clear_bit(ST_RXING, &portp->state); | |
2316 | stli_read(brdp, portp); | |
2317 | } | |
2318 | ||
2319 | return((test_bit(ST_OPENING, &portp->state) || | |
2320 | test_bit(ST_CLOSING, &portp->state) || | |
2321 | test_bit(ST_CMDING, &portp->state) || | |
2322 | test_bit(ST_TXBUSY, &portp->state) || | |
2323 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); | |
2324 | } | |
2325 | ||
2326 | /*****************************************************************************/ | |
2327 | ||
2328 | /* | |
2329 | * Service all ports on a particular board. Assumes that the boards | |
2330 | * shared memory is enabled, and that the page pointer is pointed | |
2331 | * at the cdk header structure. | |
2332 | */ | |
2333 | ||
1f8ec435 | 2334 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp) |
1da177e4 | 2335 | { |
1f8ec435 | 2336 | struct stliport *portp; |
4ac4360b AC |
2337 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; |
2338 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; | |
2339 | unsigned char __iomem *slavep; | |
2340 | int bitpos, bitat, bitsize; | |
2341 | int channr, nrdevs, slavebitchange; | |
1da177e4 LT |
2342 | |
2343 | bitsize = brdp->bitsize; | |
2344 | nrdevs = brdp->nrdevs; | |
2345 | ||
2346 | /* | |
2347 | * Check if slave wants any service. Basically we try to do as | |
2348 | * little work as possible here. There are 2 levels of service | |
2349 | * bits. So if there is nothing to do we bail early. We check | |
2350 | * 8 service bits at a time in the inner loop, so we can bypass | |
2351 | * the lot if none of them want service. | |
2352 | */ | |
4ac4360b | 2353 | memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), |
1da177e4 LT |
2354 | bitsize); |
2355 | ||
2356 | memset(&slavebits[0], 0, bitsize); | |
2357 | slavebitchange = 0; | |
2358 | ||
2359 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
2360 | if (hostbits[bitpos] == 0) | |
2361 | continue; | |
2362 | channr = bitpos * 8; | |
2363 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { | |
2364 | if (hostbits[bitpos] & bitat) { | |
2365 | portp = brdp->ports[(channr - 1)]; | |
2366 | if (stli_hostcmd(brdp, portp)) { | |
2367 | slavebitchange++; | |
2368 | slavebits[bitpos] |= bitat; | |
2369 | } | |
2370 | } | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | /* | |
2375 | * If any of the ports are no longer busy then update them in the | |
2376 | * slave request bits. We need to do this after, since a host port | |
2377 | * service may initiate more slave requests. | |
2378 | */ | |
2379 | if (slavebitchange) { | |
4ac4360b AC |
2380 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2381 | slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; | |
1da177e4 | 2382 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
4ac4360b AC |
2383 | if (readb(slavebits + bitpos)) |
2384 | writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); | |
1da177e4 LT |
2385 | } |
2386 | } | |
2387 | } | |
2388 | ||
2389 | /*****************************************************************************/ | |
2390 | ||
2391 | /* | |
2392 | * Driver poll routine. This routine polls the boards in use and passes | |
2393 | * messages back up to host when necessary. This is actually very | |
2394 | * CPU efficient, since we will always have the kernel poll clock, it | |
2395 | * adds only a few cycles when idle (since board service can be | |
2396 | * determined very easily), but when loaded generates no interrupts | |
2397 | * (with their expensive associated context change). | |
2398 | */ | |
2399 | ||
2400 | static void stli_poll(unsigned long arg) | |
2401 | { | |
4ac4360b | 2402 | cdkhdr_t __iomem *hdrp; |
1f8ec435 | 2403 | struct stlibrd *brdp; |
1328d737 | 2404 | unsigned int brdnr; |
1da177e4 | 2405 | |
ff8efe97 | 2406 | mod_timer(&stli_timerlist, STLI_TIMEOUT); |
1da177e4 LT |
2407 | |
2408 | /* | |
2409 | * Check each board and do any servicing required. | |
2410 | */ | |
2411 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2412 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2413 | if (brdp == NULL) |
1da177e4 LT |
2414 | continue; |
2415 | if ((brdp->state & BST_STARTED) == 0) | |
2416 | continue; | |
2417 | ||
4ac4360b | 2418 | spin_lock(&brd_lock); |
1da177e4 | 2419 | EBRDENABLE(brdp); |
4ac4360b AC |
2420 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2421 | if (readb(&hdrp->hostreq)) | |
1da177e4 LT |
2422 | stli_brdpoll(brdp, hdrp); |
2423 | EBRDDISABLE(brdp); | |
4ac4360b | 2424 | spin_unlock(&brd_lock); |
1da177e4 LT |
2425 | } |
2426 | } | |
2427 | ||
2428 | /*****************************************************************************/ | |
2429 | ||
2430 | /* | |
2431 | * Translate the termios settings into the port setting structure of | |
2432 | * the slave. | |
2433 | */ | |
2434 | ||
d18a750f AC |
2435 | static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, |
2436 | asyport_t *pp, struct ktermios *tiosp) | |
1da177e4 | 2437 | { |
1da177e4 LT |
2438 | memset(pp, 0, sizeof(asyport_t)); |
2439 | ||
2440 | /* | |
2441 | * Start of by setting the baud, char size, parity and stop bit info. | |
2442 | */ | |
d18a750f | 2443 | pp->baudout = tty_get_baud_rate(tty); |
1da177e4 | 2444 | if ((tiosp->c_cflag & CBAUD) == B38400) { |
b02f5ad6 | 2445 | if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
1da177e4 | 2446 | pp->baudout = 57600; |
b02f5ad6 | 2447 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
1da177e4 | 2448 | pp->baudout = 115200; |
b02f5ad6 | 2449 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
1da177e4 | 2450 | pp->baudout = 230400; |
b02f5ad6 | 2451 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
1da177e4 | 2452 | pp->baudout = 460800; |
b02f5ad6 | 2453 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) |
1da177e4 LT |
2454 | pp->baudout = (portp->baud_base / portp->custom_divisor); |
2455 | } | |
2456 | if (pp->baudout > STL_MAXBAUD) | |
2457 | pp->baudout = STL_MAXBAUD; | |
2458 | pp->baudin = pp->baudout; | |
2459 | ||
2460 | switch (tiosp->c_cflag & CSIZE) { | |
2461 | case CS5: | |
2462 | pp->csize = 5; | |
2463 | break; | |
2464 | case CS6: | |
2465 | pp->csize = 6; | |
2466 | break; | |
2467 | case CS7: | |
2468 | pp->csize = 7; | |
2469 | break; | |
2470 | default: | |
2471 | pp->csize = 8; | |
2472 | break; | |
2473 | } | |
2474 | ||
2475 | if (tiosp->c_cflag & CSTOPB) | |
2476 | pp->stopbs = PT_STOP2; | |
2477 | else | |
2478 | pp->stopbs = PT_STOP1; | |
2479 | ||
2480 | if (tiosp->c_cflag & PARENB) { | |
2481 | if (tiosp->c_cflag & PARODD) | |
2482 | pp->parity = PT_ODDPARITY; | |
2483 | else | |
2484 | pp->parity = PT_EVENPARITY; | |
2485 | } else { | |
2486 | pp->parity = PT_NOPARITY; | |
2487 | } | |
2488 | ||
2489 | /* | |
2490 | * Set up any flow control options enabled. | |
2491 | */ | |
2492 | if (tiosp->c_iflag & IXON) { | |
2493 | pp->flow |= F_IXON; | |
2494 | if (tiosp->c_iflag & IXANY) | |
2495 | pp->flow |= F_IXANY; | |
2496 | } | |
2497 | if (tiosp->c_cflag & CRTSCTS) | |
2498 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); | |
2499 | ||
2500 | pp->startin = tiosp->c_cc[VSTART]; | |
2501 | pp->stopin = tiosp->c_cc[VSTOP]; | |
2502 | pp->startout = tiosp->c_cc[VSTART]; | |
2503 | pp->stopout = tiosp->c_cc[VSTOP]; | |
2504 | ||
2505 | /* | |
2506 | * Set up the RX char marking mask with those RX error types we must | |
2507 | * catch. We can get the slave to help us out a little here, it will | |
2508 | * ignore parity errors and breaks for us, and mark parity errors in | |
2509 | * the data stream. | |
2510 | */ | |
2511 | if (tiosp->c_iflag & IGNPAR) | |
2512 | pp->iflag |= FI_IGNRXERRS; | |
2513 | if (tiosp->c_iflag & IGNBRK) | |
2514 | pp->iflag |= FI_IGNBREAK; | |
2515 | ||
2516 | portp->rxmarkmsk = 0; | |
2517 | if (tiosp->c_iflag & (INPCK | PARMRK)) | |
2518 | pp->iflag |= FI_1MARKRXERRS; | |
2519 | if (tiosp->c_iflag & BRKINT) | |
2520 | portp->rxmarkmsk |= BRKINT; | |
2521 | ||
2522 | /* | |
2523 | * Set up clocal processing as required. | |
2524 | */ | |
2525 | if (tiosp->c_cflag & CLOCAL) | |
b02f5ad6 | 2526 | portp->port.flags &= ~ASYNC_CHECK_CD; |
1da177e4 | 2527 | else |
b02f5ad6 | 2528 | portp->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2529 | |
2530 | /* | |
2531 | * Transfer any persistent flags into the asyport structure. | |
2532 | */ | |
2533 | pp->pflag = (portp->pflag & 0xffff); | |
2534 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; | |
2535 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; | |
2536 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; | |
2537 | } | |
2538 | ||
2539 | /*****************************************************************************/ | |
2540 | ||
2541 | /* | |
2542 | * Construct a slave signals structure for setting the DTR and RTS | |
2543 | * signals as specified. | |
2544 | */ | |
2545 | ||
2546 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) | |
2547 | { | |
1da177e4 LT |
2548 | memset(sp, 0, sizeof(asysigs_t)); |
2549 | if (dtr >= 0) { | |
2550 | sp->signal |= SG_DTR; | |
2551 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); | |
2552 | } | |
2553 | if (rts >= 0) { | |
2554 | sp->signal |= SG_RTS; | |
2555 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); | |
2556 | } | |
2557 | } | |
2558 | ||
2559 | /*****************************************************************************/ | |
2560 | ||
2561 | /* | |
2562 | * Convert the signals returned from the slave into a local TIOCM type | |
2563 | * signals value. We keep them locally in TIOCM format. | |
2564 | */ | |
2565 | ||
2566 | static long stli_mktiocm(unsigned long sigvalue) | |
2567 | { | |
4ac4360b | 2568 | long tiocm = 0; |
1da177e4 LT |
2569 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); |
2570 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); | |
2571 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); | |
2572 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); | |
2573 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); | |
2574 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); | |
2575 | return(tiocm); | |
2576 | } | |
2577 | ||
2578 | /*****************************************************************************/ | |
2579 | ||
2580 | /* | |
2581 | * All panels and ports actually attached have been worked out. All | |
2582 | * we need to do here is set up the appropriate per port data structures. | |
2583 | */ | |
2584 | ||
1f8ec435 | 2585 | static int stli_initports(struct stlibrd *brdp) |
1da177e4 | 2586 | { |
1f8ec435 | 2587 | struct stliport *portp; |
1328d737 | 2588 | unsigned int i, panelnr, panelport; |
1da177e4 | 2589 | |
1da177e4 | 2590 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { |
1f8ec435 | 2591 | portp = kzalloc(sizeof(struct stliport), GFP_KERNEL); |
b0b4ed72 | 2592 | if (!portp) { |
a6614999 | 2593 | printk(KERN_WARNING "istallion: failed to allocate port structure\n"); |
1da177e4 LT |
2594 | continue; |
2595 | } | |
d18a750f | 2596 | tty_port_init(&portp->port); |
31f35939 | 2597 | portp->port.ops = &stli_port_ops; |
1da177e4 LT |
2598 | portp->magic = STLI_PORTMAGIC; |
2599 | portp->portnr = i; | |
2600 | portp->brdnr = brdp->brdnr; | |
2601 | portp->panelnr = panelnr; | |
2602 | portp->baud_base = STL_BAUDBASE; | |
a6614999 | 2603 | portp->port.close_delay = STL_CLOSEDELAY; |
1da177e4 | 2604 | portp->closing_wait = 30 * HZ; |
b02f5ad6 AC |
2605 | init_waitqueue_head(&portp->port.open_wait); |
2606 | init_waitqueue_head(&portp->port.close_wait); | |
1da177e4 LT |
2607 | init_waitqueue_head(&portp->raw_wait); |
2608 | panelport++; | |
2609 | if (panelport >= brdp->panels[panelnr]) { | |
2610 | panelport = 0; | |
2611 | panelnr++; | |
2612 | } | |
2613 | brdp->ports[i] = portp; | |
2614 | } | |
2615 | ||
4ac4360b | 2616 | return 0; |
1da177e4 LT |
2617 | } |
2618 | ||
2619 | /*****************************************************************************/ | |
2620 | ||
2621 | /* | |
2622 | * All the following routines are board specific hardware operations. | |
2623 | */ | |
2624 | ||
1f8ec435 | 2625 | static void stli_ecpinit(struct stlibrd *brdp) |
1da177e4 LT |
2626 | { |
2627 | unsigned long memconf; | |
2628 | ||
1da177e4 LT |
2629 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2630 | udelay(10); | |
2631 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2632 | udelay(100); | |
2633 | ||
2634 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; | |
2635 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); | |
2636 | } | |
2637 | ||
2638 | /*****************************************************************************/ | |
2639 | ||
1f8ec435 | 2640 | static void stli_ecpenable(struct stlibrd *brdp) |
1da177e4 | 2641 | { |
1da177e4 LT |
2642 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); |
2643 | } | |
2644 | ||
2645 | /*****************************************************************************/ | |
2646 | ||
1f8ec435 | 2647 | static void stli_ecpdisable(struct stlibrd *brdp) |
1da177e4 | 2648 | { |
1da177e4 LT |
2649 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
2650 | } | |
2651 | ||
2652 | /*****************************************************************************/ | |
2653 | ||
1f8ec435 | 2654 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2655 | { |
29756fa3 | 2656 | void __iomem *ptr; |
4ac4360b | 2657 | unsigned char val; |
1da177e4 LT |
2658 | |
2659 | if (offset > brdp->memsize) { | |
a6614999 | 2660 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2661 | "range at line=%d(%d), brd=%d\n", |
2662 | (int) offset, line, __LINE__, brdp->brdnr); | |
2663 | ptr = NULL; | |
2664 | val = 0; | |
2665 | } else { | |
2666 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); | |
2667 | val = (unsigned char) (offset / ECP_ATPAGESIZE); | |
2668 | } | |
2669 | outb(val, (brdp->iobase + ECP_ATMEMPR)); | |
2670 | return(ptr); | |
2671 | } | |
2672 | ||
2673 | /*****************************************************************************/ | |
2674 | ||
1f8ec435 | 2675 | static void stli_ecpreset(struct stlibrd *brdp) |
1da177e4 | 2676 | { |
1da177e4 LT |
2677 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2678 | udelay(10); | |
2679 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2680 | udelay(500); | |
2681 | } | |
2682 | ||
2683 | /*****************************************************************************/ | |
2684 | ||
1f8ec435 | 2685 | static void stli_ecpintr(struct stlibrd *brdp) |
1da177e4 | 2686 | { |
1da177e4 LT |
2687 | outb(0x1, brdp->iobase); |
2688 | } | |
2689 | ||
2690 | /*****************************************************************************/ | |
2691 | ||
2692 | /* | |
2693 | * The following set of functions act on ECP EISA boards. | |
2694 | */ | |
2695 | ||
1f8ec435 | 2696 | static void stli_ecpeiinit(struct stlibrd *brdp) |
1da177e4 LT |
2697 | { |
2698 | unsigned long memconf; | |
2699 | ||
1da177e4 LT |
2700 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
2701 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2702 | udelay(10); | |
2703 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2704 | udelay(500); | |
2705 | ||
2706 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; | |
2707 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); | |
2708 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; | |
2709 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); | |
2710 | } | |
2711 | ||
2712 | /*****************************************************************************/ | |
2713 | ||
1f8ec435 | 2714 | static void stli_ecpeienable(struct stlibrd *brdp) |
1da177e4 LT |
2715 | { |
2716 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); | |
2717 | } | |
2718 | ||
2719 | /*****************************************************************************/ | |
2720 | ||
1f8ec435 | 2721 | static void stli_ecpeidisable(struct stlibrd *brdp) |
1da177e4 LT |
2722 | { |
2723 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2724 | } | |
2725 | ||
2726 | /*****************************************************************************/ | |
2727 | ||
1f8ec435 | 2728 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2729 | { |
29756fa3 | 2730 | void __iomem *ptr; |
1da177e4 LT |
2731 | unsigned char val; |
2732 | ||
1da177e4 | 2733 | if (offset > brdp->memsize) { |
a6614999 | 2734 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2735 | "range at line=%d(%d), brd=%d\n", |
2736 | (int) offset, line, __LINE__, brdp->brdnr); | |
2737 | ptr = NULL; | |
2738 | val = 0; | |
2739 | } else { | |
2740 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); | |
2741 | if (offset < ECP_EIPAGESIZE) | |
2742 | val = ECP_EIENABLE; | |
2743 | else | |
2744 | val = ECP_EIENABLE | 0x40; | |
2745 | } | |
2746 | outb(val, (brdp->iobase + ECP_EICONFR)); | |
2747 | return(ptr); | |
2748 | } | |
2749 | ||
2750 | /*****************************************************************************/ | |
2751 | ||
1f8ec435 | 2752 | static void stli_ecpeireset(struct stlibrd *brdp) |
1da177e4 LT |
2753 | { |
2754 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2755 | udelay(10); | |
2756 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2757 | udelay(500); | |
2758 | } | |
2759 | ||
2760 | /*****************************************************************************/ | |
2761 | ||
2762 | /* | |
2763 | * The following set of functions act on ECP MCA boards. | |
2764 | */ | |
2765 | ||
1f8ec435 | 2766 | static void stli_ecpmcenable(struct stlibrd *brdp) |
1da177e4 LT |
2767 | { |
2768 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); | |
2769 | } | |
2770 | ||
2771 | /*****************************************************************************/ | |
2772 | ||
1f8ec435 | 2773 | static void stli_ecpmcdisable(struct stlibrd *brdp) |
1da177e4 LT |
2774 | { |
2775 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2776 | } | |
2777 | ||
2778 | /*****************************************************************************/ | |
2779 | ||
1f8ec435 | 2780 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2781 | { |
29756fa3 | 2782 | void __iomem *ptr; |
4ac4360b | 2783 | unsigned char val; |
1da177e4 LT |
2784 | |
2785 | if (offset > brdp->memsize) { | |
a6614999 | 2786 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2787 | "range at line=%d(%d), brd=%d\n", |
2788 | (int) offset, line, __LINE__, brdp->brdnr); | |
2789 | ptr = NULL; | |
2790 | val = 0; | |
2791 | } else { | |
2792 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); | |
2793 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; | |
2794 | } | |
2795 | outb(val, (brdp->iobase + ECP_MCCONFR)); | |
2796 | return(ptr); | |
2797 | } | |
2798 | ||
2799 | /*****************************************************************************/ | |
2800 | ||
1f8ec435 | 2801 | static void stli_ecpmcreset(struct stlibrd *brdp) |
1da177e4 LT |
2802 | { |
2803 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); | |
2804 | udelay(10); | |
2805 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2806 | udelay(500); | |
2807 | } | |
2808 | ||
2809 | /*****************************************************************************/ | |
2810 | ||
2811 | /* | |
2812 | * The following set of functions act on ECP PCI boards. | |
2813 | */ | |
2814 | ||
1f8ec435 | 2815 | static void stli_ecppciinit(struct stlibrd *brdp) |
1da177e4 | 2816 | { |
1da177e4 LT |
2817 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
2818 | udelay(10); | |
2819 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
2820 | udelay(500); | |
2821 | } | |
2822 | ||
2823 | /*****************************************************************************/ | |
2824 | ||
1f8ec435 | 2825 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2826 | { |
29756fa3 | 2827 | void __iomem *ptr; |
1da177e4 LT |
2828 | unsigned char val; |
2829 | ||
1da177e4 | 2830 | if (offset > brdp->memsize) { |
a6614999 | 2831 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2832 | "range at line=%d(%d), board=%d\n", |
2833 | (int) offset, line, __LINE__, brdp->brdnr); | |
2834 | ptr = NULL; | |
2835 | val = 0; | |
2836 | } else { | |
2837 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); | |
2838 | val = (offset / ECP_PCIPAGESIZE) << 1; | |
2839 | } | |
2840 | outb(val, (brdp->iobase + ECP_PCICONFR)); | |
2841 | return(ptr); | |
2842 | } | |
2843 | ||
2844 | /*****************************************************************************/ | |
2845 | ||
1f8ec435 | 2846 | static void stli_ecppcireset(struct stlibrd *brdp) |
1da177e4 LT |
2847 | { |
2848 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
2849 | udelay(10); | |
2850 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
2851 | udelay(500); | |
2852 | } | |
2853 | ||
2854 | /*****************************************************************************/ | |
2855 | ||
2856 | /* | |
2857 | * The following routines act on ONboards. | |
2858 | */ | |
2859 | ||
1f8ec435 | 2860 | static void stli_onbinit(struct stlibrd *brdp) |
1da177e4 LT |
2861 | { |
2862 | unsigned long memconf; | |
2863 | ||
1da177e4 LT |
2864 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
2865 | udelay(10); | |
2866 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
2867 | mdelay(1000); | |
2868 | ||
2869 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; | |
2870 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); | |
2871 | outb(0x1, brdp->iobase); | |
2872 | mdelay(1); | |
2873 | } | |
2874 | ||
2875 | /*****************************************************************************/ | |
2876 | ||
1f8ec435 | 2877 | static void stli_onbenable(struct stlibrd *brdp) |
1da177e4 | 2878 | { |
1da177e4 LT |
2879 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); |
2880 | } | |
2881 | ||
2882 | /*****************************************************************************/ | |
2883 | ||
1f8ec435 | 2884 | static void stli_onbdisable(struct stlibrd *brdp) |
1da177e4 | 2885 | { |
1da177e4 LT |
2886 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); |
2887 | } | |
2888 | ||
2889 | /*****************************************************************************/ | |
2890 | ||
1f8ec435 | 2891 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2892 | { |
29756fa3 | 2893 | void __iomem *ptr; |
1da177e4 | 2894 | |
1da177e4 | 2895 | if (offset > brdp->memsize) { |
a6614999 | 2896 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2897 | "range at line=%d(%d), brd=%d\n", |
2898 | (int) offset, line, __LINE__, brdp->brdnr); | |
2899 | ptr = NULL; | |
2900 | } else { | |
2901 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); | |
2902 | } | |
2903 | return(ptr); | |
2904 | } | |
2905 | ||
2906 | /*****************************************************************************/ | |
2907 | ||
1f8ec435 | 2908 | static void stli_onbreset(struct stlibrd *brdp) |
1da177e4 | 2909 | { |
1da177e4 LT |
2910 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
2911 | udelay(10); | |
2912 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
2913 | mdelay(1000); | |
2914 | } | |
2915 | ||
2916 | /*****************************************************************************/ | |
2917 | ||
2918 | /* | |
2919 | * The following routines act on ONboard EISA. | |
2920 | */ | |
2921 | ||
1f8ec435 | 2922 | static void stli_onbeinit(struct stlibrd *brdp) |
1da177e4 LT |
2923 | { |
2924 | unsigned long memconf; | |
2925 | ||
1da177e4 LT |
2926 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
2927 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
2928 | udelay(10); | |
2929 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
2930 | mdelay(1000); | |
2931 | ||
2932 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; | |
2933 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); | |
2934 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; | |
2935 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); | |
2936 | outb(0x1, brdp->iobase); | |
2937 | mdelay(1); | |
2938 | } | |
2939 | ||
2940 | /*****************************************************************************/ | |
2941 | ||
1f8ec435 | 2942 | static void stli_onbeenable(struct stlibrd *brdp) |
1da177e4 | 2943 | { |
1da177e4 LT |
2944 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); |
2945 | } | |
2946 | ||
2947 | /*****************************************************************************/ | |
2948 | ||
1f8ec435 | 2949 | static void stli_onbedisable(struct stlibrd *brdp) |
1da177e4 | 2950 | { |
1da177e4 LT |
2951 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
2952 | } | |
2953 | ||
2954 | /*****************************************************************************/ | |
2955 | ||
1f8ec435 | 2956 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2957 | { |
29756fa3 | 2958 | void __iomem *ptr; |
4ac4360b | 2959 | unsigned char val; |
1da177e4 LT |
2960 | |
2961 | if (offset > brdp->memsize) { | |
a6614999 | 2962 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2963 | "range at line=%d(%d), brd=%d\n", |
2964 | (int) offset, line, __LINE__, brdp->brdnr); | |
2965 | ptr = NULL; | |
2966 | val = 0; | |
2967 | } else { | |
2968 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); | |
2969 | if (offset < ONB_EIPAGESIZE) | |
2970 | val = ONB_EIENABLE; | |
2971 | else | |
2972 | val = ONB_EIENABLE | 0x40; | |
2973 | } | |
2974 | outb(val, (brdp->iobase + ONB_EICONFR)); | |
2975 | return(ptr); | |
2976 | } | |
2977 | ||
2978 | /*****************************************************************************/ | |
2979 | ||
1f8ec435 | 2980 | static void stli_onbereset(struct stlibrd *brdp) |
1da177e4 | 2981 | { |
1da177e4 LT |
2982 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
2983 | udelay(10); | |
2984 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
2985 | mdelay(1000); | |
2986 | } | |
2987 | ||
2988 | /*****************************************************************************/ | |
2989 | ||
2990 | /* | |
2991 | * The following routines act on Brumby boards. | |
2992 | */ | |
2993 | ||
1f8ec435 | 2994 | static void stli_bbyinit(struct stlibrd *brdp) |
1da177e4 | 2995 | { |
1da177e4 LT |
2996 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
2997 | udelay(10); | |
2998 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
2999 | mdelay(1000); | |
3000 | outb(0x1, brdp->iobase); | |
3001 | mdelay(1); | |
3002 | } | |
3003 | ||
3004 | /*****************************************************************************/ | |
3005 | ||
1f8ec435 | 3006 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3007 | { |
29756fa3 | 3008 | void __iomem *ptr; |
4ac4360b | 3009 | unsigned char val; |
1da177e4 | 3010 | |
4ac4360b | 3011 | BUG_ON(offset > brdp->memsize); |
1da177e4 | 3012 | |
4ac4360b AC |
3013 | ptr = brdp->membase + (offset % BBY_PAGESIZE); |
3014 | val = (unsigned char) (offset / BBY_PAGESIZE); | |
1da177e4 LT |
3015 | outb(val, (brdp->iobase + BBY_ATCONFR)); |
3016 | return(ptr); | |
3017 | } | |
3018 | ||
3019 | /*****************************************************************************/ | |
3020 | ||
1f8ec435 | 3021 | static void stli_bbyreset(struct stlibrd *brdp) |
1da177e4 | 3022 | { |
1da177e4 LT |
3023 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3024 | udelay(10); | |
3025 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3026 | mdelay(1000); | |
3027 | } | |
3028 | ||
3029 | /*****************************************************************************/ | |
3030 | ||
3031 | /* | |
3032 | * The following routines act on original old Stallion boards. | |
3033 | */ | |
3034 | ||
1f8ec435 | 3035 | static void stli_stalinit(struct stlibrd *brdp) |
1da177e4 | 3036 | { |
1da177e4 LT |
3037 | outb(0x1, brdp->iobase); |
3038 | mdelay(1000); | |
3039 | } | |
3040 | ||
3041 | /*****************************************************************************/ | |
3042 | ||
1f8ec435 | 3043 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3044 | { |
4ac4360b AC |
3045 | BUG_ON(offset > brdp->memsize); |
3046 | return brdp->membase + (offset % STAL_PAGESIZE); | |
1da177e4 LT |
3047 | } |
3048 | ||
3049 | /*****************************************************************************/ | |
3050 | ||
1f8ec435 | 3051 | static void stli_stalreset(struct stlibrd *brdp) |
1da177e4 | 3052 | { |
4ac4360b | 3053 | u32 __iomem *vecp; |
1da177e4 | 3054 | |
4ac4360b AC |
3055 | vecp = (u32 __iomem *) (brdp->membase + 0x30); |
3056 | writel(0xffff0000, vecp); | |
1da177e4 LT |
3057 | outb(0, brdp->iobase); |
3058 | mdelay(1000); | |
3059 | } | |
3060 | ||
3061 | /*****************************************************************************/ | |
3062 | ||
3063 | /* | |
3064 | * Try to find an ECP board and initialize it. This handles only ECP | |
3065 | * board types. | |
3066 | */ | |
3067 | ||
1f8ec435 | 3068 | static int stli_initecp(struct stlibrd *brdp) |
1da177e4 | 3069 | { |
4ac4360b AC |
3070 | cdkecpsig_t sig; |
3071 | cdkecpsig_t __iomem *sigsp; | |
3072 | unsigned int status, nxtid; | |
3073 | char *name; | |
8f8f5a58 | 3074 | int retval, panelnr, nrports; |
1da177e4 | 3075 | |
8f8f5a58 JS |
3076 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) { |
3077 | retval = -ENODEV; | |
3078 | goto err; | |
3079 | } | |
3080 | ||
b306122d IK |
3081 | brdp->iosize = ECP_IOSIZE; |
3082 | ||
8f8f5a58 JS |
3083 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3084 | retval = -EIO; | |
3085 | goto err; | |
1da177e4 LT |
3086 | } |
3087 | ||
1da177e4 LT |
3088 | /* |
3089 | * Based on the specific board type setup the common vars to access | |
3090 | * and enable shared memory. Set all board specific information now | |
3091 | * as well. | |
3092 | */ | |
3093 | switch (brdp->brdtype) { | |
3094 | case BRD_ECP: | |
1da177e4 LT |
3095 | brdp->memsize = ECP_MEMSIZE; |
3096 | brdp->pagesize = ECP_ATPAGESIZE; | |
3097 | brdp->init = stli_ecpinit; | |
3098 | brdp->enable = stli_ecpenable; | |
3099 | brdp->reenable = stli_ecpenable; | |
3100 | brdp->disable = stli_ecpdisable; | |
3101 | brdp->getmemptr = stli_ecpgetmemptr; | |
3102 | brdp->intr = stli_ecpintr; | |
3103 | brdp->reset = stli_ecpreset; | |
3104 | name = "serial(EC8/64)"; | |
3105 | break; | |
3106 | ||
3107 | case BRD_ECPE: | |
1da177e4 LT |
3108 | brdp->memsize = ECP_MEMSIZE; |
3109 | brdp->pagesize = ECP_EIPAGESIZE; | |
3110 | brdp->init = stli_ecpeiinit; | |
3111 | brdp->enable = stli_ecpeienable; | |
3112 | brdp->reenable = stli_ecpeienable; | |
3113 | brdp->disable = stli_ecpeidisable; | |
3114 | brdp->getmemptr = stli_ecpeigetmemptr; | |
3115 | brdp->intr = stli_ecpintr; | |
3116 | brdp->reset = stli_ecpeireset; | |
3117 | name = "serial(EC8/64-EI)"; | |
3118 | break; | |
3119 | ||
3120 | case BRD_ECPMC: | |
1da177e4 LT |
3121 | brdp->memsize = ECP_MEMSIZE; |
3122 | brdp->pagesize = ECP_MCPAGESIZE; | |
3123 | brdp->init = NULL; | |
3124 | brdp->enable = stli_ecpmcenable; | |
3125 | brdp->reenable = stli_ecpmcenable; | |
3126 | brdp->disable = stli_ecpmcdisable; | |
3127 | brdp->getmemptr = stli_ecpmcgetmemptr; | |
3128 | brdp->intr = stli_ecpintr; | |
3129 | brdp->reset = stli_ecpmcreset; | |
3130 | name = "serial(EC8/64-MCA)"; | |
3131 | break; | |
3132 | ||
3133 | case BRD_ECPPCI: | |
1da177e4 LT |
3134 | brdp->memsize = ECP_PCIMEMSIZE; |
3135 | brdp->pagesize = ECP_PCIPAGESIZE; | |
3136 | brdp->init = stli_ecppciinit; | |
3137 | brdp->enable = NULL; | |
3138 | brdp->reenable = NULL; | |
3139 | brdp->disable = NULL; | |
3140 | brdp->getmemptr = stli_ecppcigetmemptr; | |
3141 | brdp->intr = stli_ecpintr; | |
3142 | brdp->reset = stli_ecppcireset; | |
3143 | name = "serial(EC/RA-PCI)"; | |
3144 | break; | |
3145 | ||
3146 | default: | |
8f8f5a58 JS |
3147 | retval = -EINVAL; |
3148 | goto err_reg; | |
1da177e4 LT |
3149 | } |
3150 | ||
3151 | /* | |
3152 | * The per-board operations structure is all set up, so now let's go | |
3153 | * and get the board operational. Firstly initialize board configuration | |
3154 | * registers. Set the memory mapping info so we can get at the boards | |
3155 | * shared memory. | |
3156 | */ | |
3157 | EBRDINIT(brdp); | |
3158 | ||
24cb2335 | 3159 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
8f8f5a58 JS |
3160 | if (brdp->membase == NULL) { |
3161 | retval = -ENOMEM; | |
3162 | goto err_reg; | |
1da177e4 LT |
3163 | } |
3164 | ||
3165 | /* | |
3166 | * Now that all specific code is set up, enable the shared memory and | |
3167 | * look for the a signature area that will tell us exactly what board | |
3168 | * this is, and what it is connected to it. | |
3169 | */ | |
3170 | EBRDENABLE(brdp); | |
4ac4360b | 3171 | sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
634965f5 | 3172 | memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); |
1da177e4 LT |
3173 | EBRDDISABLE(brdp); |
3174 | ||
8f8f5a58 JS |
3175 | if (sig.magic != cpu_to_le32(ECP_MAGIC)) { |
3176 | retval = -ENODEV; | |
3177 | goto err_unmap; | |
1da177e4 LT |
3178 | } |
3179 | ||
3180 | /* | |
3181 | * Scan through the signature looking at the panels connected to the | |
3182 | * board. Calculate the total number of ports as we go. | |
3183 | */ | |
3184 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { | |
3185 | status = sig.panelid[nxtid]; | |
3186 | if ((status & ECH_PNLIDMASK) != nxtid) | |
3187 | break; | |
3188 | ||
3189 | brdp->panelids[panelnr] = status; | |
3190 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; | |
3191 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) | |
3192 | nxtid++; | |
3193 | brdp->panels[panelnr] = nrports; | |
3194 | brdp->nrports += nrports; | |
3195 | nxtid++; | |
3196 | brdp->nrpanels++; | |
3197 | } | |
3198 | ||
3199 | ||
3200 | brdp->state |= BST_FOUND; | |
4ac4360b | 3201 | return 0; |
8f8f5a58 JS |
3202 | err_unmap: |
3203 | iounmap(brdp->membase); | |
3204 | brdp->membase = NULL; | |
3205 | err_reg: | |
3206 | release_region(brdp->iobase, brdp->iosize); | |
3207 | err: | |
3208 | return retval; | |
1da177e4 LT |
3209 | } |
3210 | ||
3211 | /*****************************************************************************/ | |
3212 | ||
3213 | /* | |
3214 | * Try to find an ONboard, Brumby or Stallion board and initialize it. | |
3215 | * This handles only these board types. | |
3216 | */ | |
3217 | ||
1f8ec435 | 3218 | static int stli_initonb(struct stlibrd *brdp) |
1da177e4 | 3219 | { |
4ac4360b AC |
3220 | cdkonbsig_t sig; |
3221 | cdkonbsig_t __iomem *sigsp; | |
3222 | char *name; | |
8f8f5a58 | 3223 | int i, retval; |
1da177e4 LT |
3224 | |
3225 | /* | |
3226 | * Do a basic sanity check on the IO and memory addresses. | |
3227 | */ | |
8f8f5a58 JS |
3228 | if (brdp->iobase == 0 || brdp->memaddr == 0) { |
3229 | retval = -ENODEV; | |
3230 | goto err; | |
3231 | } | |
1da177e4 LT |
3232 | |
3233 | brdp->iosize = ONB_IOSIZE; | |
3234 | ||
8f8f5a58 JS |
3235 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3236 | retval = -EIO; | |
3237 | goto err; | |
3238 | } | |
1da177e4 LT |
3239 | |
3240 | /* | |
3241 | * Based on the specific board type setup the common vars to access | |
3242 | * and enable shared memory. Set all board specific information now | |
3243 | * as well. | |
3244 | */ | |
3245 | switch (brdp->brdtype) { | |
3246 | case BRD_ONBOARD: | |
1da177e4 | 3247 | case BRD_ONBOARD2: |
1da177e4 LT |
3248 | brdp->memsize = ONB_MEMSIZE; |
3249 | brdp->pagesize = ONB_ATPAGESIZE; | |
3250 | brdp->init = stli_onbinit; | |
3251 | brdp->enable = stli_onbenable; | |
3252 | brdp->reenable = stli_onbenable; | |
3253 | brdp->disable = stli_onbdisable; | |
3254 | brdp->getmemptr = stli_onbgetmemptr; | |
3255 | brdp->intr = stli_ecpintr; | |
3256 | brdp->reset = stli_onbreset; | |
3257 | if (brdp->memaddr > 0x100000) | |
3258 | brdp->enabval = ONB_MEMENABHI; | |
3259 | else | |
3260 | brdp->enabval = ONB_MEMENABLO; | |
3261 | name = "serial(ONBoard)"; | |
3262 | break; | |
3263 | ||
3264 | case BRD_ONBOARDE: | |
1da177e4 LT |
3265 | brdp->memsize = ONB_EIMEMSIZE; |
3266 | brdp->pagesize = ONB_EIPAGESIZE; | |
3267 | brdp->init = stli_onbeinit; | |
3268 | brdp->enable = stli_onbeenable; | |
3269 | brdp->reenable = stli_onbeenable; | |
3270 | brdp->disable = stli_onbedisable; | |
3271 | brdp->getmemptr = stli_onbegetmemptr; | |
3272 | brdp->intr = stli_ecpintr; | |
3273 | brdp->reset = stli_onbereset; | |
3274 | name = "serial(ONBoard/E)"; | |
3275 | break; | |
3276 | ||
3277 | case BRD_BRUMBY4: | |
1da177e4 LT |
3278 | brdp->memsize = BBY_MEMSIZE; |
3279 | brdp->pagesize = BBY_PAGESIZE; | |
3280 | brdp->init = stli_bbyinit; | |
3281 | brdp->enable = NULL; | |
3282 | brdp->reenable = NULL; | |
3283 | brdp->disable = NULL; | |
3284 | brdp->getmemptr = stli_bbygetmemptr; | |
3285 | brdp->intr = stli_ecpintr; | |
3286 | brdp->reset = stli_bbyreset; | |
3287 | name = "serial(Brumby)"; | |
3288 | break; | |
3289 | ||
3290 | case BRD_STALLION: | |
1da177e4 LT |
3291 | brdp->memsize = STAL_MEMSIZE; |
3292 | brdp->pagesize = STAL_PAGESIZE; | |
3293 | brdp->init = stli_stalinit; | |
3294 | brdp->enable = NULL; | |
3295 | brdp->reenable = NULL; | |
3296 | brdp->disable = NULL; | |
3297 | brdp->getmemptr = stli_stalgetmemptr; | |
3298 | brdp->intr = stli_ecpintr; | |
3299 | brdp->reset = stli_stalreset; | |
3300 | name = "serial(Stallion)"; | |
3301 | break; | |
3302 | ||
3303 | default: | |
8f8f5a58 JS |
3304 | retval = -EINVAL; |
3305 | goto err_reg; | |
1da177e4 LT |
3306 | } |
3307 | ||
3308 | /* | |
3309 | * The per-board operations structure is all set up, so now let's go | |
3310 | * and get the board operational. Firstly initialize board configuration | |
3311 | * registers. Set the memory mapping info so we can get at the boards | |
3312 | * shared memory. | |
3313 | */ | |
3314 | EBRDINIT(brdp); | |
3315 | ||
24cb2335 | 3316 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
8f8f5a58 JS |
3317 | if (brdp->membase == NULL) { |
3318 | retval = -ENOMEM; | |
3319 | goto err_reg; | |
1da177e4 LT |
3320 | } |
3321 | ||
3322 | /* | |
3323 | * Now that all specific code is set up, enable the shared memory and | |
3324 | * look for the a signature area that will tell us exactly what board | |
3325 | * this is, and how many ports. | |
3326 | */ | |
3327 | EBRDENABLE(brdp); | |
4ac4360b AC |
3328 | sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
3329 | memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); | |
1da177e4 LT |
3330 | EBRDDISABLE(brdp); |
3331 | ||
4ac4360b AC |
3332 | if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || |
3333 | sig.magic1 != cpu_to_le16(ONB_MAGIC1) || | |
3334 | sig.magic2 != cpu_to_le16(ONB_MAGIC2) || | |
8f8f5a58 JS |
3335 | sig.magic3 != cpu_to_le16(ONB_MAGIC3)) { |
3336 | retval = -ENODEV; | |
3337 | goto err_unmap; | |
1da177e4 LT |
3338 | } |
3339 | ||
3340 | /* | |
3341 | * Scan through the signature alive mask and calculate how many ports | |
3342 | * there are on this board. | |
3343 | */ | |
3344 | brdp->nrpanels = 1; | |
3345 | if (sig.amask1) { | |
3346 | brdp->nrports = 32; | |
3347 | } else { | |
3348 | for (i = 0; (i < 16); i++) { | |
3349 | if (((sig.amask0 << i) & 0x8000) == 0) | |
3350 | break; | |
3351 | } | |
3352 | brdp->nrports = i; | |
3353 | } | |
3354 | brdp->panels[0] = brdp->nrports; | |
3355 | ||
3356 | ||
3357 | brdp->state |= BST_FOUND; | |
4ac4360b | 3358 | return 0; |
8f8f5a58 JS |
3359 | err_unmap: |
3360 | iounmap(brdp->membase); | |
3361 | brdp->membase = NULL; | |
3362 | err_reg: | |
3363 | release_region(brdp->iobase, brdp->iosize); | |
3364 | err: | |
3365 | return retval; | |
1da177e4 LT |
3366 | } |
3367 | ||
3368 | /*****************************************************************************/ | |
3369 | ||
3370 | /* | |
3371 | * Start up a running board. This routine is only called after the | |
3372 | * code has been down loaded to the board and is operational. It will | |
3373 | * read in the memory map, and get the show on the road... | |
3374 | */ | |
3375 | ||
1f8ec435 | 3376 | static int stli_startbrd(struct stlibrd *brdp) |
1da177e4 | 3377 | { |
4ac4360b AC |
3378 | cdkhdr_t __iomem *hdrp; |
3379 | cdkmem_t __iomem *memp; | |
3380 | cdkasy_t __iomem *ap; | |
3381 | unsigned long flags; | |
1328d737 | 3382 | unsigned int portnr, nrdevs, i; |
1f8ec435 | 3383 | struct stliport *portp; |
1328d737 | 3384 | int rc = 0; |
4ac4360b AC |
3385 | u32 memoff; |
3386 | ||
3387 | spin_lock_irqsave(&brd_lock, flags); | |
1da177e4 | 3388 | EBRDENABLE(brdp); |
4ac4360b | 3389 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1da177e4 LT |
3390 | nrdevs = hdrp->nrdevs; |
3391 | ||
3392 | #if 0 | |
3393 | printk("%s(%d): CDK version %d.%d.%d --> " | |
3394 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", | |
4ac4360b AC |
3395 | __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), |
3396 | readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), | |
3397 | readl(&hdrp->slavep)); | |
1da177e4 LT |
3398 | #endif |
3399 | ||
3400 | if (nrdevs < (brdp->nrports + 1)) { | |
a6614999 | 3401 | printk(KERN_ERR "istallion: slave failed to allocate memory for " |
1da177e4 LT |
3402 | "all devices, devices=%d\n", nrdevs); |
3403 | brdp->nrports = nrdevs - 1; | |
3404 | } | |
3405 | brdp->nrdevs = nrdevs; | |
3406 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; | |
3407 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; | |
3408 | brdp->bitsize = (nrdevs + 7) / 8; | |
4ac4360b AC |
3409 | memoff = readl(&hdrp->memp); |
3410 | if (memoff > brdp->memsize) { | |
a6614999 | 3411 | printk(KERN_ERR "istallion: corrupted shared memory region?\n"); |
1da177e4 LT |
3412 | rc = -EIO; |
3413 | goto stli_donestartup; | |
3414 | } | |
4ac4360b AC |
3415 | memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); |
3416 | if (readw(&memp->dtype) != TYP_ASYNCTRL) { | |
a6614999 | 3417 | printk(KERN_ERR "istallion: no slave control device found\n"); |
1da177e4 LT |
3418 | goto stli_donestartup; |
3419 | } | |
3420 | memp++; | |
3421 | ||
3422 | /* | |
3423 | * Cycle through memory allocation of each port. We are guaranteed to | |
3424 | * have all ports inside the first page of slave window, so no need to | |
3425 | * change pages while reading memory map. | |
3426 | */ | |
3427 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { | |
4ac4360b | 3428 | if (readw(&memp->dtype) != TYP_ASYNC) |
1da177e4 LT |
3429 | break; |
3430 | portp = brdp->ports[portnr]; | |
4ac4360b | 3431 | if (portp == NULL) |
1da177e4 LT |
3432 | break; |
3433 | portp->devnr = i; | |
4ac4360b | 3434 | portp->addr = readl(&memp->offset); |
1da177e4 LT |
3435 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); |
3436 | portp->portidx = (unsigned char) (i / 8); | |
3437 | portp->portbit = (unsigned char) (0x1 << (i % 8)); | |
3438 | } | |
3439 | ||
4ac4360b | 3440 | writeb(0xff, &hdrp->slavereq); |
1da177e4 LT |
3441 | |
3442 | /* | |
3443 | * For each port setup a local copy of the RX and TX buffer offsets | |
3444 | * and sizes. We do this separate from the above, because we need to | |
3445 | * move the shared memory page... | |
3446 | */ | |
3447 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { | |
3448 | portp = brdp->ports[portnr]; | |
4ac4360b | 3449 | if (portp == NULL) |
1da177e4 LT |
3450 | break; |
3451 | if (portp->addr == 0) | |
3452 | break; | |
4ac4360b AC |
3453 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
3454 | if (ap != NULL) { | |
3455 | portp->rxsize = readw(&ap->rxq.size); | |
3456 | portp->txsize = readw(&ap->txq.size); | |
3457 | portp->rxoffset = readl(&ap->rxq.offset); | |
3458 | portp->txoffset = readl(&ap->txq.offset); | |
1da177e4 LT |
3459 | } |
3460 | } | |
3461 | ||
3462 | stli_donestartup: | |
3463 | EBRDDISABLE(brdp); | |
4ac4360b | 3464 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
3465 | |
3466 | if (rc == 0) | |
3467 | brdp->state |= BST_STARTED; | |
3468 | ||
3469 | if (! stli_timeron) { | |
3470 | stli_timeron++; | |
ff8efe97 | 3471 | mod_timer(&stli_timerlist, STLI_TIMEOUT); |
1da177e4 LT |
3472 | } |
3473 | ||
4ac4360b | 3474 | return rc; |
1da177e4 LT |
3475 | } |
3476 | ||
3477 | /*****************************************************************************/ | |
3478 | ||
3479 | /* | |
3480 | * Probe and initialize the specified board. | |
3481 | */ | |
3482 | ||
1f8ec435 | 3483 | static int __devinit stli_brdinit(struct stlibrd *brdp) |
1da177e4 | 3484 | { |
8f8f5a58 JS |
3485 | int retval; |
3486 | ||
1da177e4 LT |
3487 | switch (brdp->brdtype) { |
3488 | case BRD_ECP: | |
3489 | case BRD_ECPE: | |
3490 | case BRD_ECPMC: | |
3491 | case BRD_ECPPCI: | |
8f8f5a58 | 3492 | retval = stli_initecp(brdp); |
1da177e4 LT |
3493 | break; |
3494 | case BRD_ONBOARD: | |
3495 | case BRD_ONBOARDE: | |
3496 | case BRD_ONBOARD2: | |
1da177e4 | 3497 | case BRD_BRUMBY4: |
1da177e4 | 3498 | case BRD_STALLION: |
8f8f5a58 | 3499 | retval = stli_initonb(brdp); |
1da177e4 | 3500 | break; |
1da177e4 | 3501 | default: |
a6614999 | 3502 | printk(KERN_ERR "istallion: board=%d is unknown board " |
1da177e4 | 3503 | "type=%d\n", brdp->brdnr, brdp->brdtype); |
8f8f5a58 | 3504 | retval = -ENODEV; |
1da177e4 LT |
3505 | } |
3506 | ||
8f8f5a58 JS |
3507 | if (retval) |
3508 | return retval; | |
1da177e4 LT |
3509 | |
3510 | stli_initports(brdp); | |
a6614999 | 3511 | printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x " |
1da177e4 LT |
3512 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], |
3513 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, | |
3514 | brdp->nrpanels, brdp->nrports); | |
4ac4360b | 3515 | return 0; |
1da177e4 LT |
3516 | } |
3517 | ||
a00f33f3 | 3518 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3519 | /*****************************************************************************/ |
3520 | ||
3521 | /* | |
3522 | * Probe around trying to find where the EISA boards shared memory | |
3523 | * might be. This is a bit if hack, but it is the best we can do. | |
3524 | */ | |
3525 | ||
1f8ec435 | 3526 | static int stli_eisamemprobe(struct stlibrd *brdp) |
1da177e4 | 3527 | { |
4ac4360b AC |
3528 | cdkecpsig_t ecpsig, __iomem *ecpsigp; |
3529 | cdkonbsig_t onbsig, __iomem *onbsigp; | |
1da177e4 LT |
3530 | int i, foundit; |
3531 | ||
1da177e4 LT |
3532 | /* |
3533 | * First up we reset the board, to get it into a known state. There | |
3534 | * is only 2 board types here we need to worry about. Don;t use the | |
3535 | * standard board init routine here, it programs up the shared | |
3536 | * memory address, and we don't know it yet... | |
3537 | */ | |
3538 | if (brdp->brdtype == BRD_ECPE) { | |
3539 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
3540 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3541 | udelay(10); | |
3542 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3543 | udelay(500); | |
3544 | stli_ecpeienable(brdp); | |
3545 | } else if (brdp->brdtype == BRD_ONBOARDE) { | |
3546 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
3547 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3548 | udelay(10); | |
3549 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3550 | mdelay(100); | |
3551 | outb(0x1, brdp->iobase); | |
3552 | mdelay(1); | |
3553 | stli_onbeenable(brdp); | |
3554 | } else { | |
4ac4360b | 3555 | return -ENODEV; |
1da177e4 LT |
3556 | } |
3557 | ||
3558 | foundit = 0; | |
3559 | brdp->memsize = ECP_MEMSIZE; | |
3560 | ||
3561 | /* | |
3562 | * Board shared memory is enabled, so now we have a poke around and | |
3563 | * see if we can find it. | |
3564 | */ | |
3565 | for (i = 0; (i < stli_eisamempsize); i++) { | |
3566 | brdp->memaddr = stli_eisamemprobeaddrs[i]; | |
24cb2335 | 3567 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
4ac4360b | 3568 | if (brdp->membase == NULL) |
1da177e4 LT |
3569 | continue; |
3570 | ||
3571 | if (brdp->brdtype == BRD_ECPE) { | |
29756fa3 | 3572 | ecpsigp = stli_ecpeigetmemptr(brdp, |
1da177e4 | 3573 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3574 | memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); |
3575 | if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) | |
1da177e4 LT |
3576 | foundit = 1; |
3577 | } else { | |
4ac4360b | 3578 | onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, |
1da177e4 | 3579 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3580 | memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); |
3581 | if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && | |
3582 | (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && | |
3583 | (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && | |
3584 | (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) | |
1da177e4 LT |
3585 | foundit = 1; |
3586 | } | |
3587 | ||
3588 | iounmap(brdp->membase); | |
3589 | if (foundit) | |
3590 | break; | |
3591 | } | |
3592 | ||
3593 | /* | |
3594 | * Regardless of whether we found the shared memory or not we must | |
3595 | * disable the region. After that return success or failure. | |
3596 | */ | |
3597 | if (brdp->brdtype == BRD_ECPE) | |
3598 | stli_ecpeidisable(brdp); | |
3599 | else | |
3600 | stli_onbedisable(brdp); | |
3601 | ||
3602 | if (! foundit) { | |
3603 | brdp->memaddr = 0; | |
3604 | brdp->membase = NULL; | |
a6614999 | 3605 | printk(KERN_ERR "istallion: failed to probe shared memory " |
1da177e4 LT |
3606 | "region for %s in EISA slot=%d\n", |
3607 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); | |
4ac4360b | 3608 | return -ENODEV; |
1da177e4 | 3609 | } |
4ac4360b | 3610 | return 0; |
1da177e4 | 3611 | } |
a00f33f3 | 3612 | #endif |
1da177e4 LT |
3613 | |
3614 | static int stli_getbrdnr(void) | |
3615 | { | |
1328d737 | 3616 | unsigned int i; |
1da177e4 LT |
3617 | |
3618 | for (i = 0; i < STL_MAXBRDS; i++) { | |
3619 | if (!stli_brds[i]) { | |
3620 | if (i >= stli_nrbrds) | |
3621 | stli_nrbrds = i + 1; | |
3622 | return i; | |
3623 | } | |
3624 | } | |
3625 | return -1; | |
3626 | } | |
3627 | ||
a00f33f3 | 3628 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3629 | /*****************************************************************************/ |
3630 | ||
3631 | /* | |
3632 | * Probe around and try to find any EISA boards in system. The biggest | |
3633 | * problem here is finding out what memory address is associated with | |
3634 | * an EISA board after it is found. The registers of the ECPE and | |
3635 | * ONboardE are not readable - so we can't read them from there. We | |
3636 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't | |
3637 | * actually have any way to find out the real value. The best we can | |
3638 | * do is go probing around in the usual places hoping we can find it. | |
3639 | */ | |
3640 | ||
6005e3eb | 3641 | static int __init stli_findeisabrds(void) |
1da177e4 | 3642 | { |
1f8ec435 | 3643 | struct stlibrd *brdp; |
1328d737 | 3644 | unsigned int iobase, eid, i; |
8f8f5a58 | 3645 | int brdnr, found = 0; |
1da177e4 LT |
3646 | |
3647 | /* | |
4ac4360b | 3648 | * Firstly check if this is an EISA system. If this is not an EISA system then |
1da177e4 LT |
3649 | * don't bother going any further! |
3650 | */ | |
4ac4360b AC |
3651 | if (EISA_bus) |
3652 | return 0; | |
1da177e4 LT |
3653 | |
3654 | /* | |
3655 | * Looks like an EISA system, so go searching for EISA boards. | |
3656 | */ | |
3657 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { | |
3658 | outb(0xff, (iobase + 0xc80)); | |
3659 | eid = inb(iobase + 0xc80); | |
3660 | eid |= inb(iobase + 0xc81) << 8; | |
3661 | if (eid != STL_EISAID) | |
3662 | continue; | |
3663 | ||
3664 | /* | |
3665 | * We have found a board. Need to check if this board was | |
3666 | * statically configured already (just in case!). | |
3667 | */ | |
3668 | for (i = 0; (i < STL_MAXBRDS); i++) { | |
3669 | brdp = stli_brds[i]; | |
4ac4360b | 3670 | if (brdp == NULL) |
1da177e4 LT |
3671 | continue; |
3672 | if (brdp->iobase == iobase) | |
3673 | break; | |
3674 | } | |
3675 | if (i < STL_MAXBRDS) | |
3676 | continue; | |
3677 | ||
3678 | /* | |
3679 | * We have found a Stallion board and it is not configured already. | |
3680 | * Allocate a board structure and initialize it. | |
3681 | */ | |
4ac4360b | 3682 | if ((brdp = stli_allocbrd()) == NULL) |
8f8f5a58 | 3683 | return found ? : -ENOMEM; |
1328d737 JS |
3684 | brdnr = stli_getbrdnr(); |
3685 | if (brdnr < 0) | |
8f8f5a58 | 3686 | return found ? : -ENOMEM; |
1328d737 | 3687 | brdp->brdnr = (unsigned int)brdnr; |
1da177e4 LT |
3688 | eid = inb(iobase + 0xc82); |
3689 | if (eid == ECP_EISAID) | |
3690 | brdp->brdtype = BRD_ECPE; | |
3691 | else if (eid == ONB_EISAID) | |
3692 | brdp->brdtype = BRD_ONBOARDE; | |
3693 | else | |
3694 | brdp->brdtype = BRD_UNKNOWN; | |
3695 | brdp->iobase = iobase; | |
3696 | outb(0x1, (iobase + 0xc84)); | |
3697 | if (stli_eisamemprobe(brdp)) | |
3698 | outb(0, (iobase + 0xc84)); | |
8f8f5a58 JS |
3699 | if (stli_brdinit(brdp) < 0) { |
3700 | kfree(brdp); | |
3701 | continue; | |
3702 | } | |
3703 | ||
b103b5cf | 3704 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3705 | found++; |
ec3dde57 JS |
3706 | |
3707 | for (i = 0; i < brdp->nrports; i++) | |
3708 | tty_register_device(stli_serial, | |
3709 | brdp->brdnr * STL_MAXPORTS + i, NULL); | |
1da177e4 LT |
3710 | } |
3711 | ||
8f8f5a58 | 3712 | return found; |
1da177e4 | 3713 | } |
a00f33f3 JS |
3714 | #else |
3715 | static inline int stli_findeisabrds(void) { return 0; } | |
3716 | #endif | |
1da177e4 LT |
3717 | |
3718 | /*****************************************************************************/ | |
3719 | ||
3720 | /* | |
3721 | * Find the next available board number that is free. | |
3722 | */ | |
3723 | ||
3724 | /*****************************************************************************/ | |
3725 | ||
1da177e4 LT |
3726 | /* |
3727 | * We have a Stallion board. Allocate a board structure and | |
3728 | * initialize it. Read its IO and MEMORY resources from PCI | |
3729 | * configuration space. | |
3730 | */ | |
3731 | ||
845bead4 JS |
3732 | static int __devinit stli_pciprobe(struct pci_dev *pdev, |
3733 | const struct pci_device_id *ent) | |
1da177e4 | 3734 | { |
1f8ec435 | 3735 | struct stlibrd *brdp; |
ec3dde57 | 3736 | unsigned int i; |
1328d737 | 3737 | int brdnr, retval = -EIO; |
845bead4 JS |
3738 | |
3739 | retval = pci_enable_device(pdev); | |
3740 | if (retval) | |
3741 | goto err; | |
3742 | brdp = stli_allocbrd(); | |
3743 | if (brdp == NULL) { | |
3744 | retval = -ENOMEM; | |
3745 | goto err; | |
3746 | } | |
b103b5cf | 3747 | mutex_lock(&stli_brdslock); |
1328d737 | 3748 | brdnr = stli_getbrdnr(); |
b103b5cf | 3749 | if (brdnr < 0) { |
a6614999 | 3750 | printk(KERN_INFO "istallion: too many boards found, " |
1da177e4 | 3751 | "maximum supported %d\n", STL_MAXBRDS); |
b103b5cf | 3752 | mutex_unlock(&stli_brdslock); |
845bead4 JS |
3753 | retval = -EIO; |
3754 | goto err_fr; | |
1da177e4 | 3755 | } |
1328d737 | 3756 | brdp->brdnr = (unsigned int)brdnr; |
b103b5cf JS |
3757 | stli_brds[brdp->brdnr] = brdp; |
3758 | mutex_unlock(&stli_brdslock); | |
845bead4 | 3759 | brdp->brdtype = BRD_ECPPCI; |
1da177e4 LT |
3760 | /* |
3761 | * We have all resources from the board, so lets setup the actual | |
3762 | * board structure now. | |
3763 | */ | |
845bead4 JS |
3764 | brdp->iobase = pci_resource_start(pdev, 3); |
3765 | brdp->memaddr = pci_resource_start(pdev, 2); | |
3766 | retval = stli_brdinit(brdp); | |
3767 | if (retval) | |
b103b5cf | 3768 | goto err_null; |
845bead4 | 3769 | |
39014172 | 3770 | brdp->state |= BST_PROBED; |
845bead4 | 3771 | pci_set_drvdata(pdev, brdp); |
1da177e4 | 3772 | |
140e92ab JS |
3773 | EBRDENABLE(brdp); |
3774 | brdp->enable = NULL; | |
3775 | brdp->disable = NULL; | |
3776 | ||
ec3dde57 JS |
3777 | for (i = 0; i < brdp->nrports; i++) |
3778 | tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i, | |
3779 | &pdev->dev); | |
3780 | ||
4ac4360b | 3781 | return 0; |
b103b5cf JS |
3782 | err_null: |
3783 | stli_brds[brdp->brdnr] = NULL; | |
845bead4 JS |
3784 | err_fr: |
3785 | kfree(brdp); | |
3786 | err: | |
3787 | return retval; | |
1da177e4 LT |
3788 | } |
3789 | ||
0b9ce5a2 | 3790 | static void __devexit stli_pciremove(struct pci_dev *pdev) |
845bead4 | 3791 | { |
1f8ec435 | 3792 | struct stlibrd *brdp = pci_get_drvdata(pdev); |
1da177e4 | 3793 | |
845bead4 | 3794 | stli_cleanup_ports(brdp); |
1da177e4 | 3795 | |
845bead4 JS |
3796 | iounmap(brdp->membase); |
3797 | if (brdp->iosize > 0) | |
3798 | release_region(brdp->iobase, brdp->iosize); | |
1da177e4 | 3799 | |
845bead4 JS |
3800 | stli_brds[brdp->brdnr] = NULL; |
3801 | kfree(brdp); | |
1da177e4 LT |
3802 | } |
3803 | ||
845bead4 JS |
3804 | static struct pci_driver stli_pcidriver = { |
3805 | .name = "istallion", | |
3806 | .id_table = istallion_pci_tbl, | |
3807 | .probe = stli_pciprobe, | |
3808 | .remove = __devexit_p(stli_pciremove) | |
3809 | }; | |
1da177e4 LT |
3810 | /*****************************************************************************/ |
3811 | ||
3812 | /* | |
3813 | * Allocate a new board structure. Fill out the basic info in it. | |
3814 | */ | |
3815 | ||
1f8ec435 | 3816 | static struct stlibrd *stli_allocbrd(void) |
1da177e4 | 3817 | { |
1f8ec435 | 3818 | struct stlibrd *brdp; |
1da177e4 | 3819 | |
1f8ec435 | 3820 | brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL); |
b0b4ed72 | 3821 | if (!brdp) { |
a6614999 | 3822 | printk(KERN_ERR "istallion: failed to allocate memory " |
1f8ec435 | 3823 | "(size=%Zd)\n", sizeof(struct stlibrd)); |
b0b4ed72 | 3824 | return NULL; |
1da177e4 | 3825 | } |
1da177e4 | 3826 | brdp->magic = STLI_BOARDMAGIC; |
4ac4360b | 3827 | return brdp; |
1da177e4 LT |
3828 | } |
3829 | ||
3830 | /*****************************************************************************/ | |
3831 | ||
3832 | /* | |
3833 | * Scan through all the boards in the configuration and see what we | |
3834 | * can find. | |
3835 | */ | |
3836 | ||
6005e3eb | 3837 | static int __init stli_initbrds(void) |
1da177e4 | 3838 | { |
1f8ec435 JS |
3839 | struct stlibrd *brdp, *nxtbrdp; |
3840 | struct stlconf conf; | |
8f8f5a58 | 3841 | unsigned int i, j, found = 0; |
1328d737 | 3842 | int retval; |
1da177e4 | 3843 | |
a3f8d9d5 JS |
3844 | for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp); |
3845 | stli_nrbrds++) { | |
3846 | memset(&conf, 0, sizeof(conf)); | |
3847 | if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0) | |
3848 | continue; | |
4ac4360b | 3849 | if ((brdp = stli_allocbrd()) == NULL) |
a3f8d9d5 JS |
3850 | continue; |
3851 | brdp->brdnr = stli_nrbrds; | |
3852 | brdp->brdtype = conf.brdtype; | |
3853 | brdp->iobase = conf.ioaddr1; | |
3854 | brdp->memaddr = conf.memaddr; | |
8f8f5a58 JS |
3855 | if (stli_brdinit(brdp) < 0) { |
3856 | kfree(brdp); | |
3857 | continue; | |
3858 | } | |
b103b5cf | 3859 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3860 | found++; |
ec3dde57 JS |
3861 | |
3862 | for (i = 0; i < brdp->nrports; i++) | |
3863 | tty_register_device(stli_serial, | |
3864 | brdp->brdnr * STL_MAXPORTS + i, NULL); | |
1da177e4 LT |
3865 | } |
3866 | ||
8f8f5a58 JS |
3867 | retval = stli_findeisabrds(); |
3868 | if (retval > 0) | |
3869 | found += retval; | |
845bead4 | 3870 | |
1da177e4 LT |
3871 | /* |
3872 | * All found boards are initialized. Now for a little optimization, if | |
3873 | * no boards are sharing the "shared memory" regions then we can just | |
3874 | * leave them all enabled. This is in fact the usual case. | |
3875 | */ | |
3876 | stli_shared = 0; | |
3877 | if (stli_nrbrds > 1) { | |
3878 | for (i = 0; (i < stli_nrbrds); i++) { | |
3879 | brdp = stli_brds[i]; | |
4ac4360b | 3880 | if (brdp == NULL) |
1da177e4 LT |
3881 | continue; |
3882 | for (j = i + 1; (j < stli_nrbrds); j++) { | |
3883 | nxtbrdp = stli_brds[j]; | |
4ac4360b | 3884 | if (nxtbrdp == NULL) |
1da177e4 LT |
3885 | continue; |
3886 | if ((brdp->membase >= nxtbrdp->membase) && | |
3887 | (brdp->membase <= (nxtbrdp->membase + | |
3888 | nxtbrdp->memsize - 1))) { | |
3889 | stli_shared++; | |
3890 | break; | |
3891 | } | |
3892 | } | |
3893 | } | |
3894 | } | |
3895 | ||
3896 | if (stli_shared == 0) { | |
3897 | for (i = 0; (i < stli_nrbrds); i++) { | |
3898 | brdp = stli_brds[i]; | |
4ac4360b | 3899 | if (brdp == NULL) |
1da177e4 LT |
3900 | continue; |
3901 | if (brdp->state & BST_FOUND) { | |
3902 | EBRDENABLE(brdp); | |
3903 | brdp->enable = NULL; | |
3904 | brdp->disable = NULL; | |
3905 | } | |
3906 | } | |
3907 | } | |
3908 | ||
140e92ab JS |
3909 | retval = pci_register_driver(&stli_pcidriver); |
3910 | if (retval && found == 0) { | |
3911 | printk(KERN_ERR "Neither isa nor eisa cards found nor pci " | |
3912 | "driver can be registered!\n"); | |
3913 | goto err; | |
3914 | } | |
3915 | ||
4ac4360b | 3916 | return 0; |
8f8f5a58 JS |
3917 | err: |
3918 | return retval; | |
1da177e4 LT |
3919 | } |
3920 | ||
3921 | /*****************************************************************************/ | |
3922 | ||
3923 | /* | |
3924 | * Code to handle an "staliomem" read operation. This device is the | |
3925 | * contents of the board shared memory. It is used for down loading | |
3926 | * the slave image (and debugging :-) | |
3927 | */ | |
3928 | ||
3929 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) | |
3930 | { | |
4ac4360b | 3931 | unsigned long flags; |
29756fa3 | 3932 | void __iomem *memptr; |
1f8ec435 | 3933 | struct stlibrd *brdp; |
1328d737 JS |
3934 | unsigned int brdnr; |
3935 | int size, n; | |
4ac4360b AC |
3936 | void *p; |
3937 | loff_t off = *offp; | |
1da177e4 | 3938 | |
a7113a96 | 3939 | brdnr = iminor(fp->f_path.dentry->d_inode); |
1da177e4 | 3940 | if (brdnr >= stli_nrbrds) |
4ac4360b | 3941 | return -ENODEV; |
1da177e4 | 3942 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
3943 | if (brdp == NULL) |
3944 | return -ENODEV; | |
1da177e4 | 3945 | if (brdp->state == 0) |
4ac4360b AC |
3946 | return -ENODEV; |
3947 | if (off >= brdp->memsize || off + count < off) | |
3948 | return 0; | |
1da177e4 | 3949 | |
a3f8d9d5 | 3950 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
3951 | |
3952 | /* | |
3953 | * Copy the data a page at a time | |
3954 | */ | |
3955 | ||
3956 | p = (void *)__get_free_page(GFP_KERNEL); | |
3957 | if(p == NULL) | |
3958 | return -ENOMEM; | |
1da177e4 | 3959 | |
1da177e4 | 3960 | while (size > 0) { |
4ac4360b AC |
3961 | spin_lock_irqsave(&brd_lock, flags); |
3962 | EBRDENABLE(brdp); | |
29756fa3 | 3963 | memptr = EBRDGETMEMPTR(brdp, off); |
a3f8d9d5 JS |
3964 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
3965 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
3966 | memcpy_fromio(p, memptr, n); |
3967 | EBRDDISABLE(brdp); | |
3968 | spin_unlock_irqrestore(&brd_lock, flags); | |
3969 | if (copy_to_user(buf, p, n)) { | |
1da177e4 LT |
3970 | count = -EFAULT; |
3971 | goto out; | |
3972 | } | |
4ac4360b | 3973 | off += n; |
1da177e4 LT |
3974 | buf += n; |
3975 | size -= n; | |
3976 | } | |
3977 | out: | |
4ac4360b AC |
3978 | *offp = off; |
3979 | free_page((unsigned long)p); | |
3980 | return count; | |
1da177e4 LT |
3981 | } |
3982 | ||
3983 | /*****************************************************************************/ | |
3984 | ||
3985 | /* | |
3986 | * Code to handle an "staliomem" write operation. This device is the | |
3987 | * contents of the board shared memory. It is used for down loading | |
3988 | * the slave image (and debugging :-) | |
4ac4360b AC |
3989 | * |
3990 | * FIXME: copy under lock | |
1da177e4 LT |
3991 | */ |
3992 | ||
3993 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) | |
3994 | { | |
4ac4360b | 3995 | unsigned long flags; |
29756fa3 | 3996 | void __iomem *memptr; |
1f8ec435 | 3997 | struct stlibrd *brdp; |
4ac4360b | 3998 | char __user *chbuf; |
1328d737 JS |
3999 | unsigned int brdnr; |
4000 | int size, n; | |
4ac4360b AC |
4001 | void *p; |
4002 | loff_t off = *offp; | |
1da177e4 | 4003 | |
a7113a96 | 4004 | brdnr = iminor(fp->f_path.dentry->d_inode); |
4ac4360b | 4005 | |
1da177e4 | 4006 | if (brdnr >= stli_nrbrds) |
4ac4360b | 4007 | return -ENODEV; |
1da177e4 | 4008 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4009 | if (brdp == NULL) |
4010 | return -ENODEV; | |
1da177e4 | 4011 | if (brdp->state == 0) |
4ac4360b AC |
4012 | return -ENODEV; |
4013 | if (off >= brdp->memsize || off + count < off) | |
4014 | return 0; | |
1da177e4 LT |
4015 | |
4016 | chbuf = (char __user *) buf; | |
a3f8d9d5 | 4017 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
4018 | |
4019 | /* | |
4020 | * Copy the data a page at a time | |
4021 | */ | |
4022 | ||
4023 | p = (void *)__get_free_page(GFP_KERNEL); | |
4024 | if(p == NULL) | |
4025 | return -ENOMEM; | |
1da177e4 | 4026 | |
1da177e4 | 4027 | while (size > 0) { |
a3f8d9d5 JS |
4028 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
4029 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
4030 | if (copy_from_user(p, chbuf, n)) { |
4031 | if (count == 0) | |
4032 | count = -EFAULT; | |
1da177e4 LT |
4033 | goto out; |
4034 | } | |
4ac4360b AC |
4035 | spin_lock_irqsave(&brd_lock, flags); |
4036 | EBRDENABLE(brdp); | |
29756fa3 | 4037 | memptr = EBRDGETMEMPTR(brdp, off); |
4ac4360b AC |
4038 | memcpy_toio(memptr, p, n); |
4039 | EBRDDISABLE(brdp); | |
4040 | spin_unlock_irqrestore(&brd_lock, flags); | |
4041 | off += n; | |
1da177e4 LT |
4042 | chbuf += n; |
4043 | size -= n; | |
4044 | } | |
4045 | out: | |
4ac4360b AC |
4046 | free_page((unsigned long) p); |
4047 | *offp = off; | |
4048 | return count; | |
1da177e4 LT |
4049 | } |
4050 | ||
4051 | /*****************************************************************************/ | |
4052 | ||
4053 | /* | |
4054 | * Return the board stats structure to user app. | |
4055 | */ | |
4056 | ||
4057 | static int stli_getbrdstats(combrd_t __user *bp) | |
4058 | { | |
1f8ec435 | 4059 | struct stlibrd *brdp; |
1328d737 | 4060 | unsigned int i; |
1da177e4 LT |
4061 | |
4062 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) | |
4063 | return -EFAULT; | |
4064 | if (stli_brdstats.brd >= STL_MAXBRDS) | |
4ac4360b | 4065 | return -ENODEV; |
1da177e4 | 4066 | brdp = stli_brds[stli_brdstats.brd]; |
4ac4360b AC |
4067 | if (brdp == NULL) |
4068 | return -ENODEV; | |
1da177e4 LT |
4069 | |
4070 | memset(&stli_brdstats, 0, sizeof(combrd_t)); | |
4071 | stli_brdstats.brd = brdp->brdnr; | |
4072 | stli_brdstats.type = brdp->brdtype; | |
4073 | stli_brdstats.hwid = 0; | |
4074 | stli_brdstats.state = brdp->state; | |
4075 | stli_brdstats.ioaddr = brdp->iobase; | |
4076 | stli_brdstats.memaddr = brdp->memaddr; | |
4077 | stli_brdstats.nrpanels = brdp->nrpanels; | |
4078 | stli_brdstats.nrports = brdp->nrports; | |
4079 | for (i = 0; (i < brdp->nrpanels); i++) { | |
4080 | stli_brdstats.panels[i].panel = i; | |
4081 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; | |
4082 | stli_brdstats.panels[i].nrports = brdp->panels[i]; | |
4083 | } | |
4084 | ||
4085 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) | |
4086 | return -EFAULT; | |
4ac4360b | 4087 | return 0; |
1da177e4 LT |
4088 | } |
4089 | ||
4090 | /*****************************************************************************/ | |
4091 | ||
4092 | /* | |
4093 | * Resolve the referenced port number into a port struct pointer. | |
4094 | */ | |
4095 | ||
1328d737 JS |
4096 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, |
4097 | unsigned int portnr) | |
1da177e4 | 4098 | { |
1f8ec435 | 4099 | struct stlibrd *brdp; |
1328d737 | 4100 | unsigned int i; |
1da177e4 | 4101 | |
1328d737 | 4102 | if (brdnr >= STL_MAXBRDS) |
4ac4360b | 4103 | return NULL; |
1da177e4 | 4104 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4105 | if (brdp == NULL) |
4106 | return NULL; | |
1da177e4 LT |
4107 | for (i = 0; (i < panelnr); i++) |
4108 | portnr += brdp->panels[i]; | |
1328d737 | 4109 | if (portnr >= brdp->nrports) |
4ac4360b AC |
4110 | return NULL; |
4111 | return brdp->ports[portnr]; | |
1da177e4 LT |
4112 | } |
4113 | ||
4114 | /*****************************************************************************/ | |
4115 | ||
4116 | /* | |
4117 | * Return the port stats structure to user app. A NULL port struct | |
4118 | * pointer passed in means that we need to find out from the app | |
4119 | * what port to get stats for (used through board control device). | |
4120 | */ | |
4121 | ||
d18a750f | 4122 | static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp) |
1da177e4 LT |
4123 | { |
4124 | unsigned long flags; | |
1f8ec435 | 4125 | struct stlibrd *brdp; |
1da177e4 LT |
4126 | int rc; |
4127 | ||
4128 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4129 | ||
4ac4360b AC |
4130 | if (portp == NULL) |
4131 | return -ENODEV; | |
1da177e4 | 4132 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
4133 | if (brdp == NULL) |
4134 | return -ENODEV; | |
1da177e4 LT |
4135 | |
4136 | if (brdp->state & BST_STARTED) { | |
4137 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, | |
4138 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) | |
4ac4360b | 4139 | return rc; |
1da177e4 LT |
4140 | } else { |
4141 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); | |
4142 | } | |
4143 | ||
4144 | stli_comstats.brd = portp->brdnr; | |
4145 | stli_comstats.panel = portp->panelnr; | |
4146 | stli_comstats.port = portp->portnr; | |
4147 | stli_comstats.state = portp->state; | |
42a77a1b | 4148 | stli_comstats.flags = portp->port.flags; |
1da177e4 | 4149 | |
4ac4360b | 4150 | spin_lock_irqsave(&brd_lock, flags); |
d18a750f AC |
4151 | if (tty != NULL) { |
4152 | if (portp->port.tty == tty) { | |
4153 | stli_comstats.ttystate = tty->flags; | |
4ac4360b | 4154 | stli_comstats.rxbuffered = -1; |
d18a750f AC |
4155 | if (tty->termios != NULL) { |
4156 | stli_comstats.cflags = tty->termios->c_cflag; | |
4157 | stli_comstats.iflags = tty->termios->c_iflag; | |
4158 | stli_comstats.oflags = tty->termios->c_oflag; | |
4159 | stli_comstats.lflags = tty->termios->c_lflag; | |
1da177e4 LT |
4160 | } |
4161 | } | |
4162 | } | |
4ac4360b | 4163 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
4164 | |
4165 | stli_comstats.txtotal = stli_cdkstats.txchars; | |
4166 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; | |
4167 | stli_comstats.txbuffered = stli_cdkstats.txringq; | |
4168 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; | |
4169 | stli_comstats.rxoverrun = stli_cdkstats.overruns; | |
4170 | stli_comstats.rxparity = stli_cdkstats.parity; | |
4171 | stli_comstats.rxframing = stli_cdkstats.framing; | |
4172 | stli_comstats.rxlost = stli_cdkstats.ringover; | |
4173 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; | |
4174 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; | |
4175 | stli_comstats.txxon = stli_cdkstats.txstart; | |
4176 | stli_comstats.txxoff = stli_cdkstats.txstop; | |
4177 | stli_comstats.rxxon = stli_cdkstats.rxstart; | |
4178 | stli_comstats.rxxoff = stli_cdkstats.rxstop; | |
4179 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; | |
4180 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; | |
4181 | stli_comstats.modem = stli_cdkstats.dcdcnt; | |
4182 | stli_comstats.hwid = stli_cdkstats.hwid; | |
4183 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); | |
4184 | ||
4ac4360b | 4185 | return 0; |
1da177e4 LT |
4186 | } |
4187 | ||
4188 | /*****************************************************************************/ | |
4189 | ||
4190 | /* | |
4191 | * Return the port stats structure to user app. A NULL port struct | |
4192 | * pointer passed in means that we need to find out from the app | |
4193 | * what port to get stats for (used through board control device). | |
4194 | */ | |
4195 | ||
d18a750f AC |
4196 | static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, |
4197 | comstats_t __user *cp) | |
1da177e4 | 4198 | { |
1f8ec435 | 4199 | struct stlibrd *brdp; |
4ac4360b | 4200 | int rc; |
1da177e4 LT |
4201 | |
4202 | if (!portp) { | |
4203 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4204 | return -EFAULT; | |
4205 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4206 | stli_comstats.port); | |
4207 | if (!portp) | |
4208 | return -ENODEV; | |
4209 | } | |
4210 | ||
4211 | brdp = stli_brds[portp->brdnr]; | |
4212 | if (!brdp) | |
4213 | return -ENODEV; | |
4214 | ||
d18a750f | 4215 | if ((rc = stli_portcmdstats(tty, portp)) < 0) |
1da177e4 LT |
4216 | return rc; |
4217 | ||
4218 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? | |
4219 | -EFAULT : 0; | |
4220 | } | |
4221 | ||
4222 | /*****************************************************************************/ | |
4223 | ||
4224 | /* | |
4225 | * Clear the port stats structure. We also return it zeroed out... | |
4226 | */ | |
4227 | ||
1f8ec435 | 4228 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp) |
1da177e4 | 4229 | { |
1f8ec435 | 4230 | struct stlibrd *brdp; |
4ac4360b | 4231 | int rc; |
1da177e4 LT |
4232 | |
4233 | if (!portp) { | |
4234 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4235 | return -EFAULT; | |
4236 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4237 | stli_comstats.port); | |
4238 | if (!portp) | |
4239 | return -ENODEV; | |
4240 | } | |
4241 | ||
4242 | brdp = stli_brds[portp->brdnr]; | |
4243 | if (!brdp) | |
4244 | return -ENODEV; | |
4245 | ||
4246 | if (brdp->state & BST_STARTED) { | |
4247 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) | |
4248 | return rc; | |
4249 | } | |
4250 | ||
4251 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4252 | stli_comstats.brd = portp->brdnr; | |
4253 | stli_comstats.panel = portp->panelnr; | |
4254 | stli_comstats.port = portp->portnr; | |
4255 | ||
4256 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) | |
4257 | return -EFAULT; | |
4258 | return 0; | |
4259 | } | |
4260 | ||
4261 | /*****************************************************************************/ | |
4262 | ||
4263 | /* | |
4264 | * Return the entire driver ports structure to a user app. | |
4265 | */ | |
4266 | ||
1f8ec435 | 4267 | static int stli_getportstruct(struct stliport __user *arg) |
1da177e4 | 4268 | { |
1328d737 | 4269 | struct stliport stli_dummyport; |
1f8ec435 | 4270 | struct stliport *portp; |
1da177e4 | 4271 | |
1f8ec435 | 4272 | if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport))) |
1da177e4 LT |
4273 | return -EFAULT; |
4274 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, | |
4275 | stli_dummyport.portnr); | |
4276 | if (!portp) | |
4277 | return -ENODEV; | |
1f8ec435 | 4278 | if (copy_to_user(arg, portp, sizeof(struct stliport))) |
1da177e4 LT |
4279 | return -EFAULT; |
4280 | return 0; | |
4281 | } | |
4282 | ||
4283 | /*****************************************************************************/ | |
4284 | ||
4285 | /* | |
4286 | * Return the entire driver board structure to a user app. | |
4287 | */ | |
4288 | ||
1f8ec435 | 4289 | static int stli_getbrdstruct(struct stlibrd __user *arg) |
1da177e4 | 4290 | { |
1328d737 | 4291 | struct stlibrd stli_dummybrd; |
1f8ec435 | 4292 | struct stlibrd *brdp; |
1da177e4 | 4293 | |
1f8ec435 | 4294 | if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd))) |
1da177e4 | 4295 | return -EFAULT; |
1328d737 | 4296 | if (stli_dummybrd.brdnr >= STL_MAXBRDS) |
1da177e4 LT |
4297 | return -ENODEV; |
4298 | brdp = stli_brds[stli_dummybrd.brdnr]; | |
4299 | if (!brdp) | |
4300 | return -ENODEV; | |
1f8ec435 | 4301 | if (copy_to_user(arg, brdp, sizeof(struct stlibrd))) |
1da177e4 LT |
4302 | return -EFAULT; |
4303 | return 0; | |
4304 | } | |
4305 | ||
4306 | /*****************************************************************************/ | |
4307 | ||
4308 | /* | |
4309 | * The "staliomem" device is also required to do some special operations on | |
4310 | * the board. We need to be able to send an interrupt to the board, | |
4311 | * reset it, and start/stop it. | |
4312 | */ | |
4313 | ||
4314 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg) | |
4315 | { | |
1f8ec435 | 4316 | struct stlibrd *brdp; |
4ac4360b | 4317 | int brdnr, rc, done; |
1da177e4 LT |
4318 | void __user *argp = (void __user *)arg; |
4319 | ||
1da177e4 LT |
4320 | /* |
4321 | * First up handle the board independent ioctls. | |
4322 | */ | |
4323 | done = 0; | |
4324 | rc = 0; | |
4325 | ||
37361136 AC |
4326 | lock_kernel(); |
4327 | ||
1da177e4 LT |
4328 | switch (cmd) { |
4329 | case COM_GETPORTSTATS: | |
d18a750f | 4330 | rc = stli_getportstats(NULL, NULL, argp); |
1da177e4 LT |
4331 | done++; |
4332 | break; | |
4333 | case COM_CLRPORTSTATS: | |
4334 | rc = stli_clrportstats(NULL, argp); | |
4335 | done++; | |
4336 | break; | |
4337 | case COM_GETBRDSTATS: | |
4338 | rc = stli_getbrdstats(argp); | |
4339 | done++; | |
4340 | break; | |
4341 | case COM_READPORT: | |
4342 | rc = stli_getportstruct(argp); | |
4343 | done++; | |
4344 | break; | |
4345 | case COM_READBOARD: | |
4346 | rc = stli_getbrdstruct(argp); | |
4347 | done++; | |
4348 | break; | |
4349 | } | |
37361136 | 4350 | unlock_kernel(); |
1da177e4 LT |
4351 | |
4352 | if (done) | |
4ac4360b | 4353 | return rc; |
1da177e4 LT |
4354 | |
4355 | /* | |
4356 | * Now handle the board specific ioctls. These all depend on the | |
4357 | * minor number of the device they were called from. | |
4358 | */ | |
4359 | brdnr = iminor(ip); | |
4360 | if (brdnr >= STL_MAXBRDS) | |
4ac4360b | 4361 | return -ENODEV; |
1da177e4 LT |
4362 | brdp = stli_brds[brdnr]; |
4363 | if (!brdp) | |
4ac4360b | 4364 | return -ENODEV; |
1da177e4 | 4365 | if (brdp->state == 0) |
4ac4360b | 4366 | return -ENODEV; |
1da177e4 | 4367 | |
37361136 AC |
4368 | lock_kernel(); |
4369 | ||
1da177e4 LT |
4370 | switch (cmd) { |
4371 | case STL_BINTR: | |
4372 | EBRDINTR(brdp); | |
4373 | break; | |
4374 | case STL_BSTART: | |
4375 | rc = stli_startbrd(brdp); | |
4376 | break; | |
4377 | case STL_BSTOP: | |
4378 | brdp->state &= ~BST_STARTED; | |
4379 | break; | |
4380 | case STL_BRESET: | |
4381 | brdp->state &= ~BST_STARTED; | |
4382 | EBRDRESET(brdp); | |
4383 | if (stli_shared == 0) { | |
4384 | if (brdp->reenable != NULL) | |
4385 | (* brdp->reenable)(brdp); | |
4386 | } | |
4387 | break; | |
4388 | default: | |
4389 | rc = -ENOIOCTLCMD; | |
4390 | break; | |
4391 | } | |
37361136 | 4392 | unlock_kernel(); |
4ac4360b | 4393 | return rc; |
1da177e4 LT |
4394 | } |
4395 | ||
b68e31d0 | 4396 | static const struct tty_operations stli_ops = { |
1da177e4 LT |
4397 | .open = stli_open, |
4398 | .close = stli_close, | |
4399 | .write = stli_write, | |
4400 | .put_char = stli_putchar, | |
4401 | .flush_chars = stli_flushchars, | |
4402 | .write_room = stli_writeroom, | |
4403 | .chars_in_buffer = stli_charsinbuffer, | |
4404 | .ioctl = stli_ioctl, | |
4405 | .set_termios = stli_settermios, | |
4406 | .throttle = stli_throttle, | |
4407 | .unthrottle = stli_unthrottle, | |
4408 | .stop = stli_stop, | |
4409 | .start = stli_start, | |
4410 | .hangup = stli_hangup, | |
4411 | .flush_buffer = stli_flushbuffer, | |
4412 | .break_ctl = stli_breakctl, | |
4413 | .wait_until_sent = stli_waituntilsent, | |
4414 | .send_xchar = stli_sendxchar, | |
1da177e4 LT |
4415 | .tiocmget = stli_tiocmget, |
4416 | .tiocmset = stli_tiocmset, | |
5bd6de7d | 4417 | .proc_fops = &stli_proc_fops, |
1da177e4 LT |
4418 | }; |
4419 | ||
31f35939 AC |
4420 | static const struct tty_port_operations stli_port_ops = { |
4421 | .carrier_raised = stli_carrier_raised, | |
fcc8ac18 | 4422 | .dtr_rts = stli_dtr_rts, |
31f35939 AC |
4423 | }; |
4424 | ||
1da177e4 | 4425 | /*****************************************************************************/ |
f1cc54f8 JS |
4426 | /* |
4427 | * Loadable module initialization stuff. | |
4428 | */ | |
1da177e4 | 4429 | |
f2362c94 JS |
4430 | static void istallion_cleanup_isa(void) |
4431 | { | |
4432 | struct stlibrd *brdp; | |
4433 | unsigned int j; | |
4434 | ||
4435 | for (j = 0; (j < stli_nrbrds); j++) { | |
4436 | if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED)) | |
4437 | continue; | |
4438 | ||
4439 | stli_cleanup_ports(brdp); | |
4440 | ||
4441 | iounmap(brdp->membase); | |
4442 | if (brdp->iosize > 0) | |
4443 | release_region(brdp->iobase, brdp->iosize); | |
4444 | kfree(brdp); | |
4445 | stli_brds[j] = NULL; | |
4446 | } | |
4447 | } | |
4448 | ||
f1cc54f8 | 4449 | static int __init istallion_module_init(void) |
1da177e4 | 4450 | { |
f2362c94 JS |
4451 | unsigned int i; |
4452 | int retval; | |
f1cc54f8 | 4453 | |
1da177e4 LT |
4454 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); |
4455 | ||
4ac4360b AC |
4456 | spin_lock_init(&stli_lock); |
4457 | spin_lock_init(&brd_lock); | |
4458 | ||
b0b4ed72 | 4459 | stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); |
f2362c94 | 4460 | if (!stli_txcookbuf) { |
a6614999 | 4461 | printk(KERN_ERR "istallion: failed to allocate memory " |
1da177e4 | 4462 | "(size=%d)\n", STLI_TXBUFSIZE); |
f2362c94 JS |
4463 | retval = -ENOMEM; |
4464 | goto err; | |
4465 | } | |
1da177e4 | 4466 | |
f2362c94 JS |
4467 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); |
4468 | if (!stli_serial) { | |
4469 | retval = -ENOMEM; | |
4470 | goto err_free; | |
4471 | } | |
1da177e4 | 4472 | |
1da177e4 LT |
4473 | stli_serial->owner = THIS_MODULE; |
4474 | stli_serial->driver_name = stli_drvname; | |
4475 | stli_serial->name = stli_serialname; | |
4476 | stli_serial->major = STL_SERIALMAJOR; | |
4477 | stli_serial->minor_start = 0; | |
4478 | stli_serial->type = TTY_DRIVER_TYPE_SERIAL; | |
4479 | stli_serial->subtype = SERIAL_TYPE_NORMAL; | |
4480 | stli_serial->init_termios = stli_deftermios; | |
ec3dde57 | 4481 | stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 LT |
4482 | tty_set_operations(stli_serial, &stli_ops); |
4483 | ||
f2362c94 JS |
4484 | retval = tty_register_driver(stli_serial); |
4485 | if (retval) { | |
a6614999 | 4486 | printk(KERN_ERR "istallion: failed to register serial driver\n"); |
f2362c94 JS |
4487 | goto err_ttyput; |
4488 | } | |
4489 | ||
4490 | retval = stli_initbrds(); | |
4491 | if (retval) | |
4492 | goto err_ttyunr; | |
4493 | ||
4494 | /* | |
4495 | * Set up a character driver for the shared memory region. We need this | |
4496 | * to down load the slave code image. Also it is a useful debugging tool. | |
4497 | */ | |
4498 | retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem); | |
4499 | if (retval) { | |
a6614999 | 4500 | printk(KERN_ERR "istallion: failed to register serial memory " |
f2362c94 JS |
4501 | "device\n"); |
4502 | goto err_deinit; | |
1da177e4 | 4503 | } |
f2362c94 JS |
4504 | |
4505 | istallion_class = class_create(THIS_MODULE, "staliomem"); | |
4506 | for (i = 0; i < 4; i++) | |
03457cd4 GKH |
4507 | device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), |
4508 | NULL, "staliomem%d", i); | |
f2362c94 | 4509 | |
4ac4360b | 4510 | return 0; |
f2362c94 JS |
4511 | err_deinit: |
4512 | pci_unregister_driver(&stli_pcidriver); | |
4513 | istallion_cleanup_isa(); | |
4514 | err_ttyunr: | |
4515 | tty_unregister_driver(stli_serial); | |
4516 | err_ttyput: | |
4517 | put_tty_driver(stli_serial); | |
4518 | err_free: | |
4519 | kfree(stli_txcookbuf); | |
4520 | err: | |
4521 | return retval; | |
1da177e4 LT |
4522 | } |
4523 | ||
4524 | /*****************************************************************************/ | |
f1cc54f8 JS |
4525 | |
4526 | static void __exit istallion_module_exit(void) | |
4527 | { | |
f1cc54f8 | 4528 | unsigned int j; |
f1cc54f8 JS |
4529 | |
4530 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, | |
4531 | stli_drvversion); | |
4532 | ||
f1cc54f8 JS |
4533 | if (stli_timeron) { |
4534 | stli_timeron = 0; | |
4535 | del_timer_sync(&stli_timerlist); | |
4536 | } | |
4537 | ||
f2362c94 JS |
4538 | unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); |
4539 | ||
f1cc54f8 | 4540 | for (j = 0; j < 4; j++) |
07c015e7 | 4541 | device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j)); |
f1cc54f8 | 4542 | class_destroy(istallion_class); |
f1cc54f8 | 4543 | |
f2362c94 JS |
4544 | pci_unregister_driver(&stli_pcidriver); |
4545 | istallion_cleanup_isa(); | |
f1cc54f8 | 4546 | |
f2362c94 JS |
4547 | tty_unregister_driver(stli_serial); |
4548 | put_tty_driver(stli_serial); | |
f1cc54f8 | 4549 | |
f2362c94 | 4550 | kfree(stli_txcookbuf); |
f1cc54f8 JS |
4551 | } |
4552 | ||
4553 | module_init(istallion_module_init); | |
4554 | module_exit(istallion_module_exit); |