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 LT |
21 | #include <linux/module.h> |
22 | #include <linux/slab.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/tty.h> | |
25 | #include <linux/tty_flip.h> | |
26 | #include <linux/serial.h> | |
27 | #include <linux/cdk.h> | |
28 | #include <linux/comstats.h> | |
29 | #include <linux/istallion.h> | |
30 | #include <linux/ioport.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/init.h> | |
1da177e4 LT |
33 | #include <linux/device.h> |
34 | #include <linux/wait.h> | |
4ac4360b | 35 | #include <linux/eisa.h> |
a3f8d9d5 | 36 | #include <linux/ctype.h> |
1da177e4 LT |
37 | |
38 | #include <asm/io.h> | |
39 | #include <asm/uaccess.h> | |
40 | ||
1da177e4 | 41 | #include <linux/pci.h> |
1da177e4 LT |
42 | |
43 | /*****************************************************************************/ | |
44 | ||
45 | /* | |
46 | * Define different board types. Not all of the following board types | |
47 | * are supported by this driver. But I will use the standard "assigned" | |
48 | * board numbers. Currently supported boards are abbreviated as: | |
49 | * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and | |
50 | * STAL = Stallion. | |
51 | */ | |
52 | #define BRD_UNKNOWN 0 | |
53 | #define BRD_STALLION 1 | |
54 | #define BRD_BRUMBY4 2 | |
55 | #define BRD_ONBOARD2 3 | |
56 | #define BRD_ONBOARD 4 | |
1da177e4 | 57 | #define BRD_ONBOARDE 7 |
1da177e4 LT |
58 | #define BRD_ECP 23 |
59 | #define BRD_ECPE 24 | |
60 | #define BRD_ECPMC 25 | |
1da177e4 LT |
61 | #define BRD_ECPPCI 29 |
62 | ||
63 | #define BRD_BRUMBY BRD_BRUMBY4 | |
64 | ||
65 | /* | |
66 | * Define a configuration structure to hold the board configuration. | |
67 | * Need to set this up in the code (for now) with the boards that are | |
68 | * to be configured into the system. This is what needs to be modified | |
69 | * when adding/removing/modifying boards. Each line entry in the | |
70 | * stli_brdconf[] array is a board. Each line contains io/irq/memory | |
71 | * ranges for that board (as well as what type of board it is). | |
72 | * Some examples: | |
73 | * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, | |
74 | * This line will configure an EasyConnection 8/64 at io address 2a0, | |
75 | * and shared memory address of cc000. Multiple EasyConnection 8/64 | |
76 | * boards can share the same shared memory address space. No interrupt | |
77 | * is required for this board type. | |
78 | * Another example: | |
79 | * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, | |
80 | * This line will configure an EasyConnection 8/64 EISA in slot 5 and | |
81 | * shared memory address of 0x80000000 (2 GByte). Multiple | |
82 | * EasyConnection 8/64 EISA boards can share the same shared memory | |
83 | * address space. No interrupt is required for this board type. | |
84 | * Another example: | |
85 | * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, | |
86 | * This line will configure an ONboard (ISA type) at io address 240, | |
87 | * and shared memory address of d0000. Multiple ONboards can share | |
88 | * the same shared memory address space. No interrupt required. | |
89 | * Another example: | |
90 | * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, | |
91 | * This line will configure a Brumby board (any number of ports!) at | |
92 | * io address 360 and shared memory address of c8000. All Brumby boards | |
93 | * configured into a system must have their own separate io and memory | |
94 | * addresses. No interrupt is required. | |
95 | * Another example: | |
96 | * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, | |
97 | * This line will configure an original Stallion board at io address 330 | |
98 | * and shared memory address d0000 (this would only be valid for a "V4.0" | |
99 | * or Rev.O Stallion board). All Stallion boards configured into the | |
100 | * system must have their own separate io and memory addresses. No | |
101 | * interrupt is required. | |
102 | */ | |
103 | ||
1f8ec435 | 104 | struct stlconf { |
1da177e4 LT |
105 | int brdtype; |
106 | int ioaddr1; | |
107 | int ioaddr2; | |
108 | unsigned long memaddr; | |
109 | int irq; | |
110 | int irqtype; | |
1f8ec435 | 111 | }; |
1da177e4 | 112 | |
1328d737 | 113 | static unsigned int stli_nrbrds; |
1da177e4 | 114 | |
4ac4360b AC |
115 | /* stli_lock must NOT be taken holding brd_lock */ |
116 | static spinlock_t stli_lock; /* TTY logic lock */ | |
117 | static spinlock_t brd_lock; /* Board logic lock */ | |
118 | ||
1da177e4 LT |
119 | /* |
120 | * There is some experimental EISA board detection code in this driver. | |
121 | * By default it is disabled, but for those that want to try it out, | |
122 | * then set the define below to be 1. | |
123 | */ | |
124 | #define STLI_EISAPROBE 0 | |
125 | ||
126 | /*****************************************************************************/ | |
127 | ||
128 | /* | |
129 | * Define some important driver characteristics. Device major numbers | |
130 | * allocated as per Linux Device Registry. | |
131 | */ | |
132 | #ifndef STL_SIOMEMMAJOR | |
133 | #define STL_SIOMEMMAJOR 28 | |
134 | #endif | |
135 | #ifndef STL_SERIALMAJOR | |
136 | #define STL_SERIALMAJOR 24 | |
137 | #endif | |
138 | #ifndef STL_CALLOUTMAJOR | |
139 | #define STL_CALLOUTMAJOR 25 | |
140 | #endif | |
141 | ||
142 | /*****************************************************************************/ | |
143 | ||
144 | /* | |
145 | * Define our local driver identity first. Set up stuff to deal with | |
146 | * all the local structures required by a serial tty driver. | |
147 | */ | |
148 | static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; | |
149 | static char *stli_drvname = "istallion"; | |
150 | static char *stli_drvversion = "5.6.0"; | |
151 | static char *stli_serialname = "ttyE"; | |
152 | ||
153 | static struct tty_driver *stli_serial; | |
31f35939 | 154 | static const struct tty_port_operations stli_port_ops; |
1da177e4 LT |
155 | |
156 | #define STLI_TXBUFSIZE 4096 | |
157 | ||
158 | /* | |
159 | * Use a fast local buffer for cooked characters. Typically a whole | |
160 | * bunch of cooked characters come in for a port, 1 at a time. So we | |
161 | * save those up into a local buffer, then write out the whole lot | |
162 | * with a large memcpy. Just use 1 buffer for all ports, since its | |
163 | * use it is only need for short periods of time by each port. | |
164 | */ | |
165 | static char *stli_txcookbuf; | |
166 | static int stli_txcooksize; | |
167 | static int stli_txcookrealsize; | |
168 | static struct tty_struct *stli_txcooktty; | |
169 | ||
170 | /* | |
171 | * Define a local default termios struct. All ports will be created | |
172 | * with this termios initially. Basically all it defines is a raw port | |
173 | * at 9600 baud, 8 data bits, no parity, 1 stop bit. | |
174 | */ | |
606d099c | 175 | static struct ktermios stli_deftermios = { |
1da177e4 LT |
176 | .c_cflag = (B9600 | CS8 | CREAD | HUPCL | CLOCAL), |
177 | .c_cc = INIT_C_CC, | |
606d099c AC |
178 | .c_ispeed = 9600, |
179 | .c_ospeed = 9600, | |
1da177e4 LT |
180 | }; |
181 | ||
182 | /* | |
183 | * Define global stats structures. Not used often, and can be | |
184 | * re-used for each stats call. | |
185 | */ | |
186 | static comstats_t stli_comstats; | |
187 | static combrd_t stli_brdstats; | |
1f8ec435 | 188 | static struct asystats stli_cdkstats; |
1da177e4 LT |
189 | |
190 | /*****************************************************************************/ | |
191 | ||
b103b5cf | 192 | static DEFINE_MUTEX(stli_brdslock); |
1f8ec435 | 193 | static struct stlibrd *stli_brds[STL_MAXBRDS]; |
1da177e4 LT |
194 | |
195 | static int stli_shared; | |
196 | ||
197 | /* | |
198 | * Per board state flags. Used with the state field of the board struct. | |
199 | * Not really much here... All we need to do is keep track of whether | |
200 | * the board has been detected, and whether it is actually running a slave | |
201 | * or not. | |
202 | */ | |
203 | #define BST_FOUND 0x1 | |
204 | #define BST_STARTED 0x2 | |
39014172 | 205 | #define BST_PROBED 0x4 |
1da177e4 LT |
206 | |
207 | /* | |
208 | * Define the set of port state flags. These are marked for internal | |
209 | * state purposes only, usually to do with the state of communications | |
210 | * with the slave. Most of them need to be updated atomically, so always | |
211 | * use the bit setting operations (unless protected by cli/sti). | |
212 | */ | |
213 | #define ST_INITIALIZING 1 | |
214 | #define ST_OPENING 2 | |
215 | #define ST_CLOSING 3 | |
216 | #define ST_CMDING 4 | |
217 | #define ST_TXBUSY 5 | |
218 | #define ST_RXING 6 | |
219 | #define ST_DOFLUSHRX 7 | |
220 | #define ST_DOFLUSHTX 8 | |
221 | #define ST_DOSIGS 9 | |
222 | #define ST_RXSTOP 10 | |
223 | #define ST_GETSIGS 11 | |
224 | ||
225 | /* | |
226 | * Define an array of board names as printable strings. Handy for | |
227 | * referencing boards when printing trace and stuff. | |
228 | */ | |
229 | static char *stli_brdnames[] = { | |
230 | "Unknown", | |
231 | "Stallion", | |
232 | "Brumby", | |
233 | "ONboard-MC", | |
234 | "ONboard", | |
235 | "Brumby", | |
236 | "Brumby", | |
237 | "ONboard-EI", | |
a3f8d9d5 | 238 | NULL, |
1da177e4 LT |
239 | "ONboard", |
240 | "ONboard-MC", | |
241 | "ONboard-MC", | |
a3f8d9d5 JS |
242 | NULL, |
243 | NULL, | |
244 | NULL, | |
245 | NULL, | |
246 | NULL, | |
247 | NULL, | |
248 | NULL, | |
249 | NULL, | |
1da177e4 LT |
250 | "EasyIO", |
251 | "EC8/32-AT", | |
252 | "EC8/32-MC", | |
253 | "EC8/64-AT", | |
254 | "EC8/64-EI", | |
255 | "EC8/64-MC", | |
256 | "EC8/32-PCI", | |
257 | "EC8/64-PCI", | |
258 | "EasyIO-PCI", | |
259 | "EC/RA-PCI", | |
260 | }; | |
261 | ||
262 | /*****************************************************************************/ | |
263 | ||
1da177e4 LT |
264 | /* |
265 | * Define some string labels for arguments passed from the module | |
266 | * load line. These allow for easy board definitions, and easy | |
267 | * modification of the io, memory and irq resoucres. | |
268 | */ | |
269 | ||
270 | static char *board0[8]; | |
271 | static char *board1[8]; | |
272 | static char *board2[8]; | |
273 | static char *board3[8]; | |
274 | ||
275 | static char **stli_brdsp[] = { | |
276 | (char **) &board0, | |
277 | (char **) &board1, | |
278 | (char **) &board2, | |
279 | (char **) &board3 | |
280 | }; | |
281 | ||
282 | /* | |
283 | * Define a set of common board names, and types. This is used to | |
284 | * parse any module arguments. | |
285 | */ | |
286 | ||
1f8ec435 | 287 | static struct stlibrdtype { |
1da177e4 LT |
288 | char *name; |
289 | int type; | |
1f8ec435 | 290 | } stli_brdstr[] = { |
1da177e4 LT |
291 | { "stallion", BRD_STALLION }, |
292 | { "1", BRD_STALLION }, | |
293 | { "brumby", BRD_BRUMBY }, | |
294 | { "brumby4", BRD_BRUMBY }, | |
295 | { "brumby/4", BRD_BRUMBY }, | |
296 | { "brumby-4", BRD_BRUMBY }, | |
297 | { "brumby8", BRD_BRUMBY }, | |
298 | { "brumby/8", BRD_BRUMBY }, | |
299 | { "brumby-8", BRD_BRUMBY }, | |
300 | { "brumby16", BRD_BRUMBY }, | |
301 | { "brumby/16", BRD_BRUMBY }, | |
302 | { "brumby-16", BRD_BRUMBY }, | |
303 | { "2", BRD_BRUMBY }, | |
304 | { "onboard2", BRD_ONBOARD2 }, | |
305 | { "onboard-2", BRD_ONBOARD2 }, | |
306 | { "onboard/2", BRD_ONBOARD2 }, | |
307 | { "onboard-mc", BRD_ONBOARD2 }, | |
308 | { "onboard/mc", BRD_ONBOARD2 }, | |
309 | { "onboard-mca", BRD_ONBOARD2 }, | |
310 | { "onboard/mca", BRD_ONBOARD2 }, | |
311 | { "3", BRD_ONBOARD2 }, | |
312 | { "onboard", BRD_ONBOARD }, | |
313 | { "onboardat", BRD_ONBOARD }, | |
314 | { "4", BRD_ONBOARD }, | |
315 | { "onboarde", BRD_ONBOARDE }, | |
316 | { "onboard-e", BRD_ONBOARDE }, | |
317 | { "onboard/e", BRD_ONBOARDE }, | |
318 | { "onboard-ei", BRD_ONBOARDE }, | |
319 | { "onboard/ei", BRD_ONBOARDE }, | |
320 | { "7", BRD_ONBOARDE }, | |
321 | { "ecp", BRD_ECP }, | |
322 | { "ecpat", BRD_ECP }, | |
323 | { "ec8/64", BRD_ECP }, | |
324 | { "ec8/64-at", BRD_ECP }, | |
325 | { "ec8/64-isa", BRD_ECP }, | |
326 | { "23", BRD_ECP }, | |
327 | { "ecpe", BRD_ECPE }, | |
328 | { "ecpei", BRD_ECPE }, | |
329 | { "ec8/64-e", BRD_ECPE }, | |
330 | { "ec8/64-ei", BRD_ECPE }, | |
331 | { "24", BRD_ECPE }, | |
332 | { "ecpmc", BRD_ECPMC }, | |
333 | { "ec8/64-mc", BRD_ECPMC }, | |
334 | { "ec8/64-mca", BRD_ECPMC }, | |
335 | { "25", BRD_ECPMC }, | |
336 | { "ecppci", BRD_ECPPCI }, | |
337 | { "ec/ra", BRD_ECPPCI }, | |
338 | { "ec/ra-pc", BRD_ECPPCI }, | |
339 | { "ec/ra-pci", BRD_ECPPCI }, | |
340 | { "29", BRD_ECPPCI }, | |
341 | }; | |
342 | ||
343 | /* | |
344 | * Define the module agruments. | |
345 | */ | |
346 | MODULE_AUTHOR("Greg Ungerer"); | |
347 | MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); | |
348 | MODULE_LICENSE("GPL"); | |
349 | ||
350 | ||
8d3b33f6 | 351 | module_param_array(board0, charp, NULL, 0); |
1da177e4 | 352 | MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 353 | module_param_array(board1, charp, NULL, 0); |
1da177e4 | 354 | MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 355 | module_param_array(board2, charp, NULL, 0); |
1da177e4 | 356 | MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 357 | module_param_array(board3, charp, NULL, 0); |
1da177e4 LT |
358 | MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); |
359 | ||
a00f33f3 | 360 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
361 | /* |
362 | * Set up a default memory address table for EISA board probing. | |
363 | * The default addresses are all bellow 1Mbyte, which has to be the | |
364 | * case anyway. They should be safe, since we only read values from | |
365 | * them, and interrupts are disabled while we do it. If the higher | |
366 | * memory support is compiled in then we also try probing around | |
367 | * the 1Gb, 2Gb and 3Gb areas as well... | |
368 | */ | |
369 | static unsigned long stli_eisamemprobeaddrs[] = { | |
370 | 0xc0000, 0xd0000, 0xe0000, 0xf0000, | |
371 | 0x80000000, 0x80010000, 0x80020000, 0x80030000, | |
372 | 0x40000000, 0x40010000, 0x40020000, 0x40030000, | |
373 | 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, | |
374 | 0xff000000, 0xff010000, 0xff020000, 0xff030000, | |
375 | }; | |
376 | ||
fe971071 | 377 | static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs); |
a00f33f3 | 378 | #endif |
1da177e4 LT |
379 | |
380 | /* | |
381 | * Define the Stallion PCI vendor and device IDs. | |
382 | */ | |
1da177e4 LT |
383 | #ifndef PCI_DEVICE_ID_ECRA |
384 | #define PCI_DEVICE_ID_ECRA 0x0004 | |
385 | #endif | |
386 | ||
387 | static struct pci_device_id istallion_pci_tbl[] = { | |
4ac4360b | 388 | { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), }, |
1da177e4 LT |
389 | { 0 } |
390 | }; | |
391 | MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); | |
392 | ||
845bead4 | 393 | static struct pci_driver stli_pcidriver; |
1da177e4 LT |
394 | |
395 | /*****************************************************************************/ | |
396 | ||
397 | /* | |
398 | * Hardware configuration info for ECP boards. These defines apply | |
399 | * to the directly accessible io ports of the ECP. There is a set of | |
400 | * defines for each ECP board type, ISA, EISA, MCA and PCI. | |
401 | */ | |
402 | #define ECP_IOSIZE 4 | |
403 | ||
404 | #define ECP_MEMSIZE (128 * 1024) | |
405 | #define ECP_PCIMEMSIZE (256 * 1024) | |
406 | ||
407 | #define ECP_ATPAGESIZE (4 * 1024) | |
408 | #define ECP_MCPAGESIZE (4 * 1024) | |
409 | #define ECP_EIPAGESIZE (64 * 1024) | |
410 | #define ECP_PCIPAGESIZE (64 * 1024) | |
411 | ||
412 | #define STL_EISAID 0x8c4e | |
413 | ||
414 | /* | |
415 | * Important defines for the ISA class of ECP board. | |
416 | */ | |
417 | #define ECP_ATIREG 0 | |
418 | #define ECP_ATCONFR 1 | |
419 | #define ECP_ATMEMAR 2 | |
420 | #define ECP_ATMEMPR 3 | |
421 | #define ECP_ATSTOP 0x1 | |
422 | #define ECP_ATINTENAB 0x10 | |
423 | #define ECP_ATENABLE 0x20 | |
424 | #define ECP_ATDISABLE 0x00 | |
425 | #define ECP_ATADDRMASK 0x3f000 | |
426 | #define ECP_ATADDRSHFT 12 | |
427 | ||
428 | /* | |
429 | * Important defines for the EISA class of ECP board. | |
430 | */ | |
431 | #define ECP_EIIREG 0 | |
432 | #define ECP_EIMEMARL 1 | |
433 | #define ECP_EICONFR 2 | |
434 | #define ECP_EIMEMARH 3 | |
435 | #define ECP_EIENABLE 0x1 | |
436 | #define ECP_EIDISABLE 0x0 | |
437 | #define ECP_EISTOP 0x4 | |
438 | #define ECP_EIEDGE 0x00 | |
439 | #define ECP_EILEVEL 0x80 | |
440 | #define ECP_EIADDRMASKL 0x00ff0000 | |
441 | #define ECP_EIADDRSHFTL 16 | |
442 | #define ECP_EIADDRMASKH 0xff000000 | |
443 | #define ECP_EIADDRSHFTH 24 | |
444 | #define ECP_EIBRDENAB 0xc84 | |
445 | ||
446 | #define ECP_EISAID 0x4 | |
447 | ||
448 | /* | |
449 | * Important defines for the Micro-channel class of ECP board. | |
450 | * (It has a lot in common with the ISA boards.) | |
451 | */ | |
452 | #define ECP_MCIREG 0 | |
453 | #define ECP_MCCONFR 1 | |
454 | #define ECP_MCSTOP 0x20 | |
455 | #define ECP_MCENABLE 0x80 | |
456 | #define ECP_MCDISABLE 0x00 | |
457 | ||
458 | /* | |
459 | * Important defines for the PCI class of ECP board. | |
460 | * (It has a lot in common with the other ECP boards.) | |
461 | */ | |
462 | #define ECP_PCIIREG 0 | |
463 | #define ECP_PCICONFR 1 | |
464 | #define ECP_PCISTOP 0x01 | |
465 | ||
466 | /* | |
467 | * Hardware configuration info for ONboard and Brumby boards. These | |
468 | * defines apply to the directly accessible io ports of these boards. | |
469 | */ | |
470 | #define ONB_IOSIZE 16 | |
471 | #define ONB_MEMSIZE (64 * 1024) | |
472 | #define ONB_ATPAGESIZE (64 * 1024) | |
473 | #define ONB_MCPAGESIZE (64 * 1024) | |
474 | #define ONB_EIMEMSIZE (128 * 1024) | |
475 | #define ONB_EIPAGESIZE (64 * 1024) | |
476 | ||
477 | /* | |
478 | * Important defines for the ISA class of ONboard board. | |
479 | */ | |
480 | #define ONB_ATIREG 0 | |
481 | #define ONB_ATMEMAR 1 | |
482 | #define ONB_ATCONFR 2 | |
483 | #define ONB_ATSTOP 0x4 | |
484 | #define ONB_ATENABLE 0x01 | |
485 | #define ONB_ATDISABLE 0x00 | |
486 | #define ONB_ATADDRMASK 0xff0000 | |
487 | #define ONB_ATADDRSHFT 16 | |
488 | ||
489 | #define ONB_MEMENABLO 0 | |
490 | #define ONB_MEMENABHI 0x02 | |
491 | ||
492 | /* | |
493 | * Important defines for the EISA class of ONboard board. | |
494 | */ | |
495 | #define ONB_EIIREG 0 | |
496 | #define ONB_EIMEMARL 1 | |
497 | #define ONB_EICONFR 2 | |
498 | #define ONB_EIMEMARH 3 | |
499 | #define ONB_EIENABLE 0x1 | |
500 | #define ONB_EIDISABLE 0x0 | |
501 | #define ONB_EISTOP 0x4 | |
502 | #define ONB_EIEDGE 0x00 | |
503 | #define ONB_EILEVEL 0x80 | |
504 | #define ONB_EIADDRMASKL 0x00ff0000 | |
505 | #define ONB_EIADDRSHFTL 16 | |
506 | #define ONB_EIADDRMASKH 0xff000000 | |
507 | #define ONB_EIADDRSHFTH 24 | |
508 | #define ONB_EIBRDENAB 0xc84 | |
509 | ||
510 | #define ONB_EISAID 0x1 | |
511 | ||
512 | /* | |
513 | * Important defines for the Brumby boards. They are pretty simple, | |
514 | * there is not much that is programmably configurable. | |
515 | */ | |
516 | #define BBY_IOSIZE 16 | |
517 | #define BBY_MEMSIZE (64 * 1024) | |
518 | #define BBY_PAGESIZE (16 * 1024) | |
519 | ||
520 | #define BBY_ATIREG 0 | |
521 | #define BBY_ATCONFR 1 | |
522 | #define BBY_ATSTOP 0x4 | |
523 | ||
524 | /* | |
525 | * Important defines for the Stallion boards. They are pretty simple, | |
526 | * there is not much that is programmably configurable. | |
527 | */ | |
528 | #define STAL_IOSIZE 16 | |
529 | #define STAL_MEMSIZE (64 * 1024) | |
530 | #define STAL_PAGESIZE (64 * 1024) | |
531 | ||
532 | /* | |
533 | * Define the set of status register values for EasyConnection panels. | |
534 | * The signature will return with the status value for each panel. From | |
535 | * this we can determine what is attached to the board - before we have | |
536 | * actually down loaded any code to it. | |
537 | */ | |
538 | #define ECH_PNLSTATUS 2 | |
539 | #define ECH_PNL16PORT 0x20 | |
540 | #define ECH_PNLIDMASK 0x07 | |
541 | #define ECH_PNLXPID 0x40 | |
542 | #define ECH_PNLINTRPEND 0x80 | |
543 | ||
544 | /* | |
545 | * Define some macros to do things to the board. Even those these boards | |
546 | * are somewhat related there is often significantly different ways of | |
547 | * doing some operation on it (like enable, paging, reset, etc). So each | |
548 | * board class has a set of functions which do the commonly required | |
549 | * operations. The macros below basically just call these functions, | |
550 | * generally checking for a NULL function - which means that the board | |
551 | * needs nothing done to it to achieve this operation! | |
552 | */ | |
553 | #define EBRDINIT(brdp) \ | |
554 | if (brdp->init != NULL) \ | |
555 | (* brdp->init)(brdp) | |
556 | ||
557 | #define EBRDENABLE(brdp) \ | |
558 | if (brdp->enable != NULL) \ | |
559 | (* brdp->enable)(brdp); | |
560 | ||
561 | #define EBRDDISABLE(brdp) \ | |
562 | if (brdp->disable != NULL) \ | |
563 | (* brdp->disable)(brdp); | |
564 | ||
565 | #define EBRDINTR(brdp) \ | |
566 | if (brdp->intr != NULL) \ | |
567 | (* brdp->intr)(brdp); | |
568 | ||
569 | #define EBRDRESET(brdp) \ | |
570 | if (brdp->reset != NULL) \ | |
571 | (* brdp->reset)(brdp); | |
572 | ||
573 | #define EBRDGETMEMPTR(brdp,offset) \ | |
574 | (* brdp->getmemptr)(brdp, offset, __LINE__) | |
575 | ||
576 | /* | |
577 | * Define the maximal baud rate, and the default baud base for ports. | |
578 | */ | |
579 | #define STL_MAXBAUD 460800 | |
580 | #define STL_BAUDBASE 115200 | |
581 | #define STL_CLOSEDELAY (5 * HZ / 10) | |
582 | ||
583 | /*****************************************************************************/ | |
584 | ||
585 | /* | |
586 | * Define macros to extract a brd or port number from a minor number. | |
587 | */ | |
588 | #define MINOR2BRD(min) (((min) & 0xc0) >> 6) | |
589 | #define MINOR2PORT(min) ((min) & 0x3f) | |
590 | ||
1da177e4 LT |
591 | /*****************************************************************************/ |
592 | ||
1da177e4 LT |
593 | /* |
594 | * Prototype all functions in this driver! | |
595 | */ | |
596 | ||
1f8ec435 | 597 | static int stli_parsebrd(struct stlconf *confp, char **argp); |
1da177e4 LT |
598 | static int stli_open(struct tty_struct *tty, struct file *filp); |
599 | static void stli_close(struct tty_struct *tty, struct file *filp); | |
600 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); | |
42a77a1b | 601 | static int stli_putchar(struct tty_struct *tty, unsigned char ch); |
1da177e4 LT |
602 | static void stli_flushchars(struct tty_struct *tty); |
603 | static int stli_writeroom(struct tty_struct *tty); | |
604 | static int stli_charsinbuffer(struct tty_struct *tty); | |
605 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); | |
606d099c | 606 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old); |
1da177e4 LT |
607 | static void stli_throttle(struct tty_struct *tty); |
608 | static void stli_unthrottle(struct tty_struct *tty); | |
609 | static void stli_stop(struct tty_struct *tty); | |
610 | static void stli_start(struct tty_struct *tty); | |
611 | static void stli_flushbuffer(struct tty_struct *tty); | |
9e98966c | 612 | static int stli_breakctl(struct tty_struct *tty, int state); |
1da177e4 LT |
613 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); |
614 | static void stli_sendxchar(struct tty_struct *tty, char ch); | |
615 | static void stli_hangup(struct tty_struct *tty); | |
1f8ec435 | 616 | static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos); |
1da177e4 | 617 | |
1f8ec435 JS |
618 | static int stli_brdinit(struct stlibrd *brdp); |
619 | static int stli_startbrd(struct stlibrd *brdp); | |
1da177e4 LT |
620 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); |
621 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); | |
622 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); | |
1f8ec435 | 623 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp); |
1da177e4 | 624 | static void stli_poll(unsigned long arg); |
1f8ec435 | 625 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp); |
d18a750f | 626 | static int stli_initopen(struct tty_struct *tty, struct stlibrd *brdp, struct stliport *portp); |
1f8ec435 JS |
627 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); |
628 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); | |
d18a750f | 629 | static int stli_setport(struct tty_struct *tty); |
1f8ec435 JS |
630 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); |
631 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
632 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
633 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp); | |
d18a750f | 634 | static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, asyport_t *pp, struct ktermios *tiosp); |
1da177e4 LT |
635 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); |
636 | static long stli_mktiocm(unsigned long sigvalue); | |
1f8ec435 JS |
637 | static void stli_read(struct stlibrd *brdp, struct stliport *portp); |
638 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp); | |
d18a750f | 639 | static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp); |
1da177e4 | 640 | static int stli_getbrdstats(combrd_t __user *bp); |
d18a750f AC |
641 | static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, comstats_t __user *cp); |
642 | static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp); | |
1f8ec435 JS |
643 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp); |
644 | static int stli_getportstruct(struct stliport __user *arg); | |
645 | static int stli_getbrdstruct(struct stlibrd __user *arg); | |
646 | static struct stlibrd *stli_allocbrd(void); | |
647 | ||
648 | static void stli_ecpinit(struct stlibrd *brdp); | |
649 | static void stli_ecpenable(struct stlibrd *brdp); | |
650 | static void stli_ecpdisable(struct stlibrd *brdp); | |
651 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
652 | static void stli_ecpreset(struct stlibrd *brdp); | |
653 | static void stli_ecpintr(struct stlibrd *brdp); | |
654 | static void stli_ecpeiinit(struct stlibrd *brdp); | |
655 | static void stli_ecpeienable(struct stlibrd *brdp); | |
656 | static void stli_ecpeidisable(struct stlibrd *brdp); | |
657 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
658 | static void stli_ecpeireset(struct stlibrd *brdp); | |
659 | static void stli_ecpmcenable(struct stlibrd *brdp); | |
660 | static void stli_ecpmcdisable(struct stlibrd *brdp); | |
661 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
662 | static void stli_ecpmcreset(struct stlibrd *brdp); | |
663 | static void stli_ecppciinit(struct stlibrd *brdp); | |
664 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
665 | static void stli_ecppcireset(struct stlibrd *brdp); | |
666 | ||
667 | static void stli_onbinit(struct stlibrd *brdp); | |
668 | static void stli_onbenable(struct stlibrd *brdp); | |
669 | static void stli_onbdisable(struct stlibrd *brdp); | |
670 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
671 | static void stli_onbreset(struct stlibrd *brdp); | |
672 | static void stli_onbeinit(struct stlibrd *brdp); | |
673 | static void stli_onbeenable(struct stlibrd *brdp); | |
674 | static void stli_onbedisable(struct stlibrd *brdp); | |
675 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
676 | static void stli_onbereset(struct stlibrd *brdp); | |
677 | static void stli_bbyinit(struct stlibrd *brdp); | |
678 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
679 | static void stli_bbyreset(struct stlibrd *brdp); | |
680 | static void stli_stalinit(struct stlibrd *brdp); | |
681 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
682 | static void stli_stalreset(struct stlibrd *brdp); | |
683 | ||
1328d737 | 684 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr); |
1f8ec435 JS |
685 | |
686 | static int stli_initecp(struct stlibrd *brdp); | |
687 | static int stli_initonb(struct stlibrd *brdp); | |
a00f33f3 | 688 | #if STLI_EISAPROBE != 0 |
1f8ec435 | 689 | static int stli_eisamemprobe(struct stlibrd *brdp); |
a00f33f3 | 690 | #endif |
1f8ec435 | 691 | static int stli_initports(struct stlibrd *brdp); |
1da177e4 | 692 | |
1da177e4 LT |
693 | /*****************************************************************************/ |
694 | ||
695 | /* | |
696 | * Define the driver info for a user level shared memory device. This | |
697 | * device will work sort of like the /dev/kmem device - except that it | |
698 | * will give access to the shared memory on the Stallion intelligent | |
699 | * board. This is also a very useful debugging tool. | |
700 | */ | |
62322d25 | 701 | static const struct file_operations stli_fsiomem = { |
1da177e4 LT |
702 | .owner = THIS_MODULE, |
703 | .read = stli_memread, | |
704 | .write = stli_memwrite, | |
705 | .ioctl = stli_memioctl, | |
706 | }; | |
707 | ||
708 | /*****************************************************************************/ | |
709 | ||
710 | /* | |
711 | * Define a timer_list entry for our poll routine. The slave board | |
712 | * is polled every so often to see if anything needs doing. This is | |
713 | * much cheaper on host cpu than using interrupts. It turns out to | |
714 | * not increase character latency by much either... | |
715 | */ | |
8d06afab | 716 | static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); |
1da177e4 LT |
717 | |
718 | static int stli_timeron; | |
719 | ||
720 | /* | |
721 | * Define the calculation for the timeout routine. | |
722 | */ | |
723 | #define STLI_TIMEOUT (jiffies + 1) | |
724 | ||
725 | /*****************************************************************************/ | |
726 | ||
ca8eca68 | 727 | static struct class *istallion_class; |
1da177e4 | 728 | |
1f8ec435 | 729 | static void stli_cleanup_ports(struct stlibrd *brdp) |
845bead4 | 730 | { |
1f8ec435 | 731 | struct stliport *portp; |
845bead4 | 732 | unsigned int j; |
d18a750f | 733 | struct tty_struct *tty; |
845bead4 JS |
734 | |
735 | for (j = 0; j < STL_MAXPORTS; j++) { | |
736 | portp = brdp->ports[j]; | |
737 | if (portp != NULL) { | |
d18a750f AC |
738 | tty = tty_port_tty_get(&portp->port); |
739 | if (tty != NULL) { | |
740 | tty_hangup(tty); | |
741 | tty_kref_put(tty); | |
742 | } | |
845bead4 JS |
743 | kfree(portp); |
744 | } | |
745 | } | |
746 | } | |
747 | ||
1da177e4 LT |
748 | /*****************************************************************************/ |
749 | ||
1da177e4 LT |
750 | /* |
751 | * Parse the supplied argument string, into the board conf struct. | |
752 | */ | |
753 | ||
1f8ec435 | 754 | static int stli_parsebrd(struct stlconf *confp, char **argp) |
1da177e4 | 755 | { |
1328d737 | 756 | unsigned int i; |
4ac4360b | 757 | char *sp; |
1da177e4 | 758 | |
4ac4360b AC |
759 | if (argp[0] == NULL || *argp[0] == 0) |
760 | return 0; | |
1da177e4 LT |
761 | |
762 | for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) | |
a3f8d9d5 | 763 | *sp = tolower(*sp); |
1da177e4 | 764 | |
fe971071 | 765 | for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) { |
1da177e4 LT |
766 | if (strcmp(stli_brdstr[i].name, argp[0]) == 0) |
767 | break; | |
768 | } | |
fe971071 | 769 | if (i == ARRAY_SIZE(stli_brdstr)) { |
a6614999 | 770 | printk(KERN_WARNING "istallion: unknown board name, %s?\n", argp[0]); |
fe971071 | 771 | return 0; |
1da177e4 LT |
772 | } |
773 | ||
774 | confp->brdtype = stli_brdstr[i].type; | |
4ac4360b | 775 | if (argp[1] != NULL && *argp[1] != 0) |
a3f8d9d5 | 776 | confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0); |
4ac4360b | 777 | if (argp[2] != NULL && *argp[2] != 0) |
a3f8d9d5 | 778 | confp->memaddr = simple_strtoul(argp[2], NULL, 0); |
1da177e4 LT |
779 | return(1); |
780 | } | |
781 | ||
1da177e4 LT |
782 | /*****************************************************************************/ |
783 | ||
1da177e4 LT |
784 | static int stli_open(struct tty_struct *tty, struct file *filp) |
785 | { | |
1f8ec435 JS |
786 | struct stlibrd *brdp; |
787 | struct stliport *portp; | |
2a6eadbd | 788 | struct tty_port *port; |
1328d737 JS |
789 | unsigned int minordev, brdnr, portnr; |
790 | int rc; | |
1da177e4 LT |
791 | |
792 | minordev = tty->index; | |
793 | brdnr = MINOR2BRD(minordev); | |
794 | if (brdnr >= stli_nrbrds) | |
4ac4360b | 795 | return -ENODEV; |
1da177e4 | 796 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
797 | if (brdp == NULL) |
798 | return -ENODEV; | |
1da177e4 | 799 | if ((brdp->state & BST_STARTED) == 0) |
4ac4360b | 800 | return -ENODEV; |
1da177e4 | 801 | portnr = MINOR2PORT(minordev); |
1328d737 | 802 | if (portnr > brdp->nrports) |
4ac4360b | 803 | return -ENODEV; |
1da177e4 LT |
804 | |
805 | portp = brdp->ports[portnr]; | |
4ac4360b AC |
806 | if (portp == NULL) |
807 | return -ENODEV; | |
1da177e4 | 808 | if (portp->devnr < 1) |
4ac4360b | 809 | return -ENODEV; |
2a6eadbd | 810 | port = &portp->port; |
1da177e4 LT |
811 | |
812 | /* | |
813 | * On the first open of the device setup the port hardware, and | |
814 | * initialize the per port data structure. Since initializing the port | |
815 | * requires several commands to the board we will need to wait for any | |
816 | * other open that is already initializing the port. | |
2a6eadbd AC |
817 | * |
818 | * Review - locking | |
1da177e4 | 819 | */ |
2a6eadbd | 820 | tty_port_tty_set(port, tty); |
1da177e4 | 821 | tty->driver_data = portp; |
2a6eadbd | 822 | port->count++; |
1da177e4 LT |
823 | |
824 | wait_event_interruptible(portp->raw_wait, | |
825 | !test_bit(ST_INITIALIZING, &portp->state)); | |
826 | if (signal_pending(current)) | |
4ac4360b | 827 | return -ERESTARTSYS; |
1da177e4 | 828 | |
b02f5ad6 | 829 | if ((portp->port.flags & ASYNC_INITIALIZED) == 0) { |
1da177e4 | 830 | set_bit(ST_INITIALIZING, &portp->state); |
d18a750f | 831 | if ((rc = stli_initopen(tty, brdp, portp)) >= 0) { |
2a6eadbd AC |
832 | /* Locking */ |
833 | port->flags |= ASYNC_INITIALIZED; | |
1da177e4 LT |
834 | clear_bit(TTY_IO_ERROR, &tty->flags); |
835 | } | |
836 | clear_bit(ST_INITIALIZING, &portp->state); | |
837 | wake_up_interruptible(&portp->raw_wait); | |
838 | if (rc < 0) | |
4ac4360b | 839 | return rc; |
1da177e4 | 840 | } |
2a6eadbd | 841 | return tty_port_block_til_ready(&portp->port, tty, filp); |
1da177e4 LT |
842 | } |
843 | ||
844 | /*****************************************************************************/ | |
845 | ||
846 | static void stli_close(struct tty_struct *tty, struct file *filp) | |
847 | { | |
1f8ec435 JS |
848 | struct stlibrd *brdp; |
849 | struct stliport *portp; | |
2a6eadbd | 850 | struct tty_port *port; |
4ac4360b | 851 | unsigned long flags; |
1da177e4 LT |
852 | |
853 | portp = tty->driver_data; | |
4ac4360b | 854 | if (portp == NULL) |
1da177e4 | 855 | return; |
2a6eadbd | 856 | port = &portp->port; |
1da177e4 | 857 | |
a6614999 | 858 | if (tty_port_close_start(port, tty, filp) == 0) |
1da177e4 | 859 | return; |
1da177e4 LT |
860 | |
861 | /* | |
862 | * May want to wait for data to drain before closing. The BUSY flag | |
863 | * keeps track of whether we are still transmitting or not. It is | |
864 | * updated by messages from the slave - indicating when all chars | |
865 | * really have drained. | |
866 | */ | |
2a6eadbd | 867 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
868 | if (tty == stli_txcooktty) |
869 | stli_flushchars(tty); | |
4ac4360b AC |
870 | spin_unlock_irqrestore(&stli_lock, flags); |
871 | ||
a6614999 AC |
872 | /* We end up doing this twice for the moment. This needs looking at |
873 | eventually. Note we still use portp->closing_wait as a result */ | |
1da177e4 LT |
874 | if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
875 | tty_wait_until_sent(tty, portp->closing_wait); | |
876 | ||
2a6eadbd AC |
877 | /* FIXME: port locking here needs attending to */ |
878 | port->flags &= ~ASYNC_INITIALIZED; | |
879 | ||
1da177e4 LT |
880 | brdp = stli_brds[portp->brdnr]; |
881 | stli_rawclose(brdp, portp, 0, 0); | |
882 | if (tty->termios->c_cflag & HUPCL) { | |
883 | stli_mkasysigs(&portp->asig, 0, 0); | |
884 | if (test_bit(ST_CMDING, &portp->state)) | |
885 | set_bit(ST_DOSIGS, &portp->state); | |
886 | else | |
887 | stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig, | |
888 | sizeof(asysigs_t), 0); | |
889 | } | |
890 | clear_bit(ST_TXBUSY, &portp->state); | |
891 | clear_bit(ST_RXSTOP, &portp->state); | |
892 | set_bit(TTY_IO_ERROR, &tty->flags); | |
ed569bfb | 893 | tty_ldisc_flush(tty); |
1da177e4 LT |
894 | set_bit(ST_DOFLUSHRX, &portp->state); |
895 | stli_flushbuffer(tty); | |
896 | ||
a6614999 AC |
897 | tty_port_close_end(port, tty); |
898 | tty_port_tty_set(port, NULL); | |
1da177e4 LT |
899 | } |
900 | ||
901 | /*****************************************************************************/ | |
902 | ||
903 | /* | |
904 | * Carry out first open operations on a port. This involves a number of | |
905 | * commands to be sent to the slave. We need to open the port, set the | |
906 | * notification events, set the initial port settings, get and set the | |
907 | * initial signal values. We sleep and wait in between each one. But | |
908 | * this still all happens pretty quickly. | |
909 | */ | |
910 | ||
d18a750f AC |
911 | static int stli_initopen(struct tty_struct *tty, |
912 | struct stlibrd *brdp, struct stliport *portp) | |
1da177e4 | 913 | { |
4ac4360b AC |
914 | asynotify_t nt; |
915 | asyport_t aport; | |
916 | int rc; | |
1da177e4 LT |
917 | |
918 | if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) | |
4ac4360b | 919 | return rc; |
1da177e4 LT |
920 | |
921 | memset(&nt, 0, sizeof(asynotify_t)); | |
922 | nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); | |
923 | nt.signal = SG_DCD; | |
924 | if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, | |
925 | sizeof(asynotify_t), 0)) < 0) | |
4ac4360b | 926 | return rc; |
1da177e4 | 927 | |
d18a750f | 928 | stli_mkasyport(tty, portp, &aport, tty->termios); |
1da177e4 LT |
929 | if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, |
930 | sizeof(asyport_t), 0)) < 0) | |
4ac4360b | 931 | return rc; |
1da177e4 LT |
932 | |
933 | set_bit(ST_GETSIGS, &portp->state); | |
934 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, | |
935 | sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 936 | return rc; |
1da177e4 LT |
937 | if (test_and_clear_bit(ST_GETSIGS, &portp->state)) |
938 | portp->sigs = stli_mktiocm(portp->asig.sigvalue); | |
939 | stli_mkasysigs(&portp->asig, 1, 1); | |
940 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
941 | sizeof(asysigs_t), 0)) < 0) | |
4ac4360b | 942 | return rc; |
1da177e4 | 943 | |
4ac4360b | 944 | return 0; |
1da177e4 LT |
945 | } |
946 | ||
947 | /*****************************************************************************/ | |
948 | ||
949 | /* | |
950 | * Send an open message to the slave. This will sleep waiting for the | |
951 | * acknowledgement, so must have user context. We need to co-ordinate | |
952 | * with close events here, since we don't want open and close events | |
953 | * to overlap. | |
954 | */ | |
955 | ||
1f8ec435 | 956 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 957 | { |
4ac4360b AC |
958 | cdkhdr_t __iomem *hdrp; |
959 | cdkctrl_t __iomem *cp; | |
960 | unsigned char __iomem *bits; | |
961 | unsigned long flags; | |
962 | int rc; | |
1da177e4 LT |
963 | |
964 | /* | |
965 | * Send a message to the slave to open this port. | |
966 | */ | |
1da177e4 LT |
967 | |
968 | /* | |
969 | * Slave is already closing this port. This can happen if a hangup | |
970 | * occurs on this port. So we must wait until it is complete. The | |
971 | * order of opens and closes may not be preserved across shared | |
972 | * memory, so we must wait until it is complete. | |
973 | */ | |
974 | wait_event_interruptible(portp->raw_wait, | |
975 | !test_bit(ST_CLOSING, &portp->state)); | |
976 | if (signal_pending(current)) { | |
1da177e4 LT |
977 | return -ERESTARTSYS; |
978 | } | |
979 | ||
980 | /* | |
981 | * Everything is ready now, so write the open message into shared | |
982 | * memory. Once the message is in set the service bits to say that | |
983 | * this port wants service. | |
984 | */ | |
4ac4360b | 985 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 986 | EBRDENABLE(brdp); |
4ac4360b AC |
987 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
988 | writel(arg, &cp->openarg); | |
989 | writeb(1, &cp->open); | |
990 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
991 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 992 | portp->portidx; |
4ac4360b | 993 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
994 | EBRDDISABLE(brdp); |
995 | ||
996 | if (wait == 0) { | |
4ac4360b AC |
997 | spin_unlock_irqrestore(&brd_lock, flags); |
998 | return 0; | |
1da177e4 LT |
999 | } |
1000 | ||
1001 | /* | |
1002 | * Slave is in action, so now we must wait for the open acknowledgment | |
1003 | * to come back. | |
1004 | */ | |
1005 | rc = 0; | |
1006 | set_bit(ST_OPENING, &portp->state); | |
4ac4360b AC |
1007 | spin_unlock_irqrestore(&brd_lock, flags); |
1008 | ||
1da177e4 LT |
1009 | wait_event_interruptible(portp->raw_wait, |
1010 | !test_bit(ST_OPENING, &portp->state)); | |
1011 | if (signal_pending(current)) | |
1012 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1013 | |
1014 | if ((rc == 0) && (portp->rc != 0)) | |
1015 | rc = -EIO; | |
4ac4360b | 1016 | return rc; |
1da177e4 LT |
1017 | } |
1018 | ||
1019 | /*****************************************************************************/ | |
1020 | ||
1021 | /* | |
1022 | * Send a close message to the slave. Normally this will sleep waiting | |
1023 | * for the acknowledgement, but if wait parameter is 0 it will not. If | |
1024 | * wait is true then must have user context (to sleep). | |
1025 | */ | |
1026 | ||
1f8ec435 | 1027 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 1028 | { |
4ac4360b AC |
1029 | cdkhdr_t __iomem *hdrp; |
1030 | cdkctrl_t __iomem *cp; | |
1031 | unsigned char __iomem *bits; | |
1032 | unsigned long flags; | |
1033 | int rc; | |
1da177e4 LT |
1034 | |
1035 | /* | |
1036 | * Slave is already closing this port. This can happen if a hangup | |
1037 | * occurs on this port. | |
1038 | */ | |
1039 | if (wait) { | |
1040 | wait_event_interruptible(portp->raw_wait, | |
1041 | !test_bit(ST_CLOSING, &portp->state)); | |
1042 | if (signal_pending(current)) { | |
1da177e4 LT |
1043 | return -ERESTARTSYS; |
1044 | } | |
1045 | } | |
1046 | ||
1047 | /* | |
1048 | * Write the close command into shared memory. | |
1049 | */ | |
4ac4360b | 1050 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1051 | EBRDENABLE(brdp); |
4ac4360b AC |
1052 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1053 | writel(arg, &cp->closearg); | |
1054 | writeb(1, &cp->close); | |
1055 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1056 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1057 | portp->portidx; |
4ac4360b | 1058 | writeb(readb(bits) |portp->portbit, bits); |
1da177e4 LT |
1059 | EBRDDISABLE(brdp); |
1060 | ||
1061 | set_bit(ST_CLOSING, &portp->state); | |
4ac4360b AC |
1062 | spin_unlock_irqrestore(&brd_lock, flags); |
1063 | ||
1064 | if (wait == 0) | |
1065 | return 0; | |
1da177e4 LT |
1066 | |
1067 | /* | |
1068 | * Slave is in action, so now we must wait for the open acknowledgment | |
1069 | * to come back. | |
1070 | */ | |
1071 | rc = 0; | |
1072 | wait_event_interruptible(portp->raw_wait, | |
1073 | !test_bit(ST_CLOSING, &portp->state)); | |
1074 | if (signal_pending(current)) | |
1075 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1076 | |
1077 | if ((rc == 0) && (portp->rc != 0)) | |
1078 | rc = -EIO; | |
4ac4360b | 1079 | return rc; |
1da177e4 LT |
1080 | } |
1081 | ||
1082 | /*****************************************************************************/ | |
1083 | ||
1084 | /* | |
1085 | * Send a command to the slave and wait for the response. This must | |
1086 | * have user context (it sleeps). This routine is generic in that it | |
1087 | * can send any type of command. Its purpose is to wait for that command | |
1088 | * to complete (as opposed to initiating the command then returning). | |
1089 | */ | |
1090 | ||
1f8ec435 | 1091 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 1092 | { |
1da177e4 LT |
1093 | wait_event_interruptible(portp->raw_wait, |
1094 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1095 | if (signal_pending(current)) |
1da177e4 | 1096 | return -ERESTARTSYS; |
1da177e4 LT |
1097 | |
1098 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
1099 | ||
1100 | wait_event_interruptible(portp->raw_wait, | |
1101 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1102 | if (signal_pending(current)) |
1da177e4 | 1103 | return -ERESTARTSYS; |
1da177e4 LT |
1104 | |
1105 | if (portp->rc != 0) | |
4ac4360b AC |
1106 | return -EIO; |
1107 | return 0; | |
1da177e4 LT |
1108 | } |
1109 | ||
1110 | /*****************************************************************************/ | |
1111 | ||
1112 | /* | |
1113 | * Send the termios settings for this port to the slave. This sleeps | |
1114 | * waiting for the command to complete - so must have user context. | |
1115 | */ | |
1116 | ||
d18a750f | 1117 | static int stli_setport(struct tty_struct *tty) |
1da177e4 | 1118 | { |
d18a750f | 1119 | struct stliport *portp = tty->driver_data; |
1f8ec435 | 1120 | struct stlibrd *brdp; |
4ac4360b | 1121 | asyport_t aport; |
1da177e4 | 1122 | |
4ac4360b AC |
1123 | if (portp == NULL) |
1124 | return -ENODEV; | |
1328d737 | 1125 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1126 | return -ENODEV; |
1da177e4 | 1127 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1128 | if (brdp == NULL) |
1129 | return -ENODEV; | |
1da177e4 | 1130 | |
d18a750f | 1131 | stli_mkasyport(tty, portp, &aport, tty->termios); |
1da177e4 LT |
1132 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); |
1133 | } | |
1134 | ||
1135 | /*****************************************************************************/ | |
1136 | ||
31f35939 AC |
1137 | static int stli_carrier_raised(struct tty_port *port) |
1138 | { | |
1139 | struct stliport *portp = container_of(port, struct stliport, port); | |
1140 | return (portp->sigs & TIOCM_CD) ? 1 : 0; | |
1141 | } | |
1142 | ||
2a6eadbd | 1143 | static void stli_raise_dtr_rts(struct tty_port *port) |
1da177e4 | 1144 | { |
2a6eadbd AC |
1145 | struct stliport *portp = container_of(port, struct stliport, port); |
1146 | struct stlibrd *brdp = stli_brds[portp->brdnr]; | |
1147 | stli_mkasysigs(&portp->asig, 1, 1); | |
1148 | if (stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1149 | sizeof(asysigs_t), 0) < 0) | |
1150 | printk(KERN_WARNING "istallion: dtr raise failed.\n"); | |
1da177e4 LT |
1151 | } |
1152 | ||
2a6eadbd | 1153 | |
1da177e4 LT |
1154 | /*****************************************************************************/ |
1155 | ||
1156 | /* | |
1157 | * Write routine. Take the data and put it in the shared memory ring | |
1158 | * queue. If port is not already sending chars then need to mark the | |
1159 | * service bits for this port. | |
1160 | */ | |
1161 | ||
1162 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1163 | { | |
4ac4360b AC |
1164 | cdkasy_t __iomem *ap; |
1165 | cdkhdr_t __iomem *hdrp; | |
1166 | unsigned char __iomem *bits; | |
1167 | unsigned char __iomem *shbuf; | |
1168 | unsigned char *chbuf; | |
1f8ec435 JS |
1169 | struct stliport *portp; |
1170 | struct stlibrd *brdp; | |
4ac4360b AC |
1171 | unsigned int len, stlen, head, tail, size; |
1172 | unsigned long flags; | |
1da177e4 | 1173 | |
1da177e4 LT |
1174 | if (tty == stli_txcooktty) |
1175 | stli_flushchars(tty); | |
1176 | portp = tty->driver_data; | |
4ac4360b AC |
1177 | if (portp == NULL) |
1178 | return 0; | |
1328d737 | 1179 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1180 | return 0; |
1da177e4 | 1181 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1182 | if (brdp == NULL) |
1183 | return 0; | |
1da177e4 LT |
1184 | chbuf = (unsigned char *) buf; |
1185 | ||
1186 | /* | |
1187 | * All data is now local, shove as much as possible into shared memory. | |
1188 | */ | |
4ac4360b | 1189 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1190 | EBRDENABLE(brdp); |
4ac4360b AC |
1191 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1192 | head = (unsigned int) readw(&ap->txq.head); | |
1193 | tail = (unsigned int) readw(&ap->txq.tail); | |
1194 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1195 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1196 | size = portp->txsize; |
1197 | if (head >= tail) { | |
1198 | len = size - (head - tail) - 1; | |
1199 | stlen = size - head; | |
1200 | } else { | |
1201 | len = tail - head - 1; | |
1202 | stlen = len; | |
1203 | } | |
1204 | ||
a3f8d9d5 | 1205 | len = min(len, (unsigned int)count); |
1da177e4 | 1206 | count = 0; |
4ac4360b | 1207 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1208 | |
1209 | while (len > 0) { | |
a3f8d9d5 | 1210 | stlen = min(len, stlen); |
4ac4360b | 1211 | memcpy_toio(shbuf + head, chbuf, stlen); |
1da177e4 LT |
1212 | chbuf += stlen; |
1213 | len -= stlen; | |
1214 | count += stlen; | |
1215 | head += stlen; | |
1216 | if (head >= size) { | |
1217 | head = 0; | |
1218 | stlen = tail; | |
1219 | } | |
1220 | } | |
1221 | ||
4ac4360b AC |
1222 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1223 | writew(head, &ap->txq.head); | |
1da177e4 | 1224 | if (test_bit(ST_TXBUSY, &portp->state)) { |
4ac4360b AC |
1225 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1226 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1227 | } |
4ac4360b AC |
1228 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1229 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1230 | portp->portidx; |
4ac4360b | 1231 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1232 | set_bit(ST_TXBUSY, &portp->state); |
1233 | EBRDDISABLE(brdp); | |
4ac4360b | 1234 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1235 | |
1236 | return(count); | |
1237 | } | |
1238 | ||
1239 | /*****************************************************************************/ | |
1240 | ||
1241 | /* | |
1242 | * Output a single character. We put it into a temporary local buffer | |
1243 | * (for speed) then write out that buffer when the flushchars routine | |
1244 | * is called. There is a safety catch here so that if some other port | |
1245 | * writes chars before the current buffer has been, then we write them | |
1246 | * first them do the new ports. | |
1247 | */ | |
1248 | ||
42a77a1b | 1249 | static int stli_putchar(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1250 | { |
1da177e4 | 1251 | if (tty != stli_txcooktty) { |
4ac4360b | 1252 | if (stli_txcooktty != NULL) |
1da177e4 LT |
1253 | stli_flushchars(stli_txcooktty); |
1254 | stli_txcooktty = tty; | |
1255 | } | |
1256 | ||
1257 | stli_txcookbuf[stli_txcooksize++] = ch; | |
42a77a1b | 1258 | return 0; |
1da177e4 LT |
1259 | } |
1260 | ||
1261 | /*****************************************************************************/ | |
1262 | ||
1263 | /* | |
1264 | * Transfer characters from the local TX cooking buffer to the board. | |
1265 | * We sort of ignore the tty that gets passed in here. We rely on the | |
1266 | * info stored with the TX cook buffer to tell us which port to flush | |
1267 | * the data on. In any case we clean out the TX cook buffer, for re-use | |
1268 | * by someone else. | |
1269 | */ | |
1270 | ||
1271 | static void stli_flushchars(struct tty_struct *tty) | |
1272 | { | |
4ac4360b AC |
1273 | cdkhdr_t __iomem *hdrp; |
1274 | unsigned char __iomem *bits; | |
1275 | cdkasy_t __iomem *ap; | |
1276 | struct tty_struct *cooktty; | |
1f8ec435 JS |
1277 | struct stliport *portp; |
1278 | struct stlibrd *brdp; | |
4ac4360b AC |
1279 | unsigned int len, stlen, head, tail, size, count, cooksize; |
1280 | unsigned char *buf; | |
1281 | unsigned char __iomem *shbuf; | |
1282 | unsigned long flags; | |
1da177e4 LT |
1283 | |
1284 | cooksize = stli_txcooksize; | |
1285 | cooktty = stli_txcooktty; | |
1286 | stli_txcooksize = 0; | |
1287 | stli_txcookrealsize = 0; | |
4ac4360b | 1288 | stli_txcooktty = NULL; |
1da177e4 | 1289 | |
4ac4360b | 1290 | if (cooktty == NULL) |
1da177e4 LT |
1291 | return; |
1292 | if (tty != cooktty) | |
1293 | tty = cooktty; | |
1294 | if (cooksize == 0) | |
1295 | return; | |
1296 | ||
1297 | portp = tty->driver_data; | |
4ac4360b | 1298 | if (portp == NULL) |
1da177e4 | 1299 | return; |
1328d737 | 1300 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1301 | return; |
1302 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1303 | if (brdp == NULL) |
1da177e4 LT |
1304 | return; |
1305 | ||
4ac4360b | 1306 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
1307 | EBRDENABLE(brdp); |
1308 | ||
4ac4360b AC |
1309 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1310 | head = (unsigned int) readw(&ap->txq.head); | |
1311 | tail = (unsigned int) readw(&ap->txq.tail); | |
1312 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1313 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1314 | size = portp->txsize; |
1315 | if (head >= tail) { | |
1316 | len = size - (head - tail) - 1; | |
1317 | stlen = size - head; | |
1318 | } else { | |
1319 | len = tail - head - 1; | |
1320 | stlen = len; | |
1321 | } | |
1322 | ||
a3f8d9d5 | 1323 | len = min(len, cooksize); |
1da177e4 | 1324 | count = 0; |
29756fa3 | 1325 | shbuf = EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1326 | buf = stli_txcookbuf; |
1327 | ||
1328 | while (len > 0) { | |
a3f8d9d5 | 1329 | stlen = min(len, stlen); |
4ac4360b | 1330 | memcpy_toio(shbuf + head, buf, stlen); |
1da177e4 LT |
1331 | buf += stlen; |
1332 | len -= stlen; | |
1333 | count += stlen; | |
1334 | head += stlen; | |
1335 | if (head >= size) { | |
1336 | head = 0; | |
1337 | stlen = tail; | |
1338 | } | |
1339 | } | |
1340 | ||
4ac4360b AC |
1341 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1342 | writew(head, &ap->txq.head); | |
1da177e4 LT |
1343 | |
1344 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
4ac4360b AC |
1345 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1346 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1347 | } |
4ac4360b AC |
1348 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1349 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1350 | portp->portidx; |
4ac4360b | 1351 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1352 | set_bit(ST_TXBUSY, &portp->state); |
1353 | ||
1354 | EBRDDISABLE(brdp); | |
4ac4360b | 1355 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1356 | } |
1357 | ||
1358 | /*****************************************************************************/ | |
1359 | ||
1360 | static int stli_writeroom(struct tty_struct *tty) | |
1361 | { | |
4ac4360b | 1362 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1363 | struct stliport *portp; |
1364 | struct stlibrd *brdp; | |
4ac4360b AC |
1365 | unsigned int head, tail, len; |
1366 | unsigned long flags; | |
1da177e4 | 1367 | |
1da177e4 LT |
1368 | if (tty == stli_txcooktty) { |
1369 | if (stli_txcookrealsize != 0) { | |
1370 | len = stli_txcookrealsize - stli_txcooksize; | |
4ac4360b | 1371 | return len; |
1da177e4 LT |
1372 | } |
1373 | } | |
1374 | ||
1375 | portp = tty->driver_data; | |
4ac4360b AC |
1376 | if (portp == NULL) |
1377 | return 0; | |
1328d737 | 1378 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1379 | return 0; |
1da177e4 | 1380 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1381 | if (brdp == NULL) |
1382 | return 0; | |
1da177e4 | 1383 | |
4ac4360b | 1384 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1385 | EBRDENABLE(brdp); |
4ac4360b AC |
1386 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1387 | head = (unsigned int) readw(&rp->head); | |
1388 | tail = (unsigned int) readw(&rp->tail); | |
1389 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1390 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1391 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); |
1392 | len--; | |
1393 | EBRDDISABLE(brdp); | |
4ac4360b | 1394 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1395 | |
1396 | if (tty == stli_txcooktty) { | |
1397 | stli_txcookrealsize = len; | |
1398 | len -= stli_txcooksize; | |
1399 | } | |
4ac4360b | 1400 | return len; |
1da177e4 LT |
1401 | } |
1402 | ||
1403 | /*****************************************************************************/ | |
1404 | ||
1405 | /* | |
1406 | * Return the number of characters in the transmit buffer. Normally we | |
1407 | * will return the number of chars in the shared memory ring queue. | |
1408 | * We need to kludge around the case where the shared memory buffer is | |
1409 | * empty but not all characters have drained yet, for this case just | |
1410 | * return that there is 1 character in the buffer! | |
1411 | */ | |
1412 | ||
1413 | static int stli_charsinbuffer(struct tty_struct *tty) | |
1414 | { | |
4ac4360b | 1415 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1416 | struct stliport *portp; |
1417 | struct stlibrd *brdp; | |
4ac4360b AC |
1418 | unsigned int head, tail, len; |
1419 | unsigned long flags; | |
1da177e4 | 1420 | |
1da177e4 LT |
1421 | if (tty == stli_txcooktty) |
1422 | stli_flushchars(tty); | |
1423 | portp = tty->driver_data; | |
4ac4360b AC |
1424 | if (portp == NULL) |
1425 | return 0; | |
1328d737 | 1426 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1427 | return 0; |
1da177e4 | 1428 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1429 | if (brdp == NULL) |
1430 | return 0; | |
1da177e4 | 1431 | |
4ac4360b | 1432 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1433 | EBRDENABLE(brdp); |
4ac4360b AC |
1434 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1435 | head = (unsigned int) readw(&rp->head); | |
1436 | tail = (unsigned int) readw(&rp->tail); | |
1437 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1438 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1439 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); |
1440 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) | |
1441 | len = 1; | |
1442 | EBRDDISABLE(brdp); | |
4ac4360b | 1443 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 | 1444 | |
4ac4360b | 1445 | return len; |
1da177e4 LT |
1446 | } |
1447 | ||
1448 | /*****************************************************************************/ | |
1449 | ||
1450 | /* | |
1451 | * Generate the serial struct info. | |
1452 | */ | |
1453 | ||
1f8ec435 | 1454 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp) |
1da177e4 | 1455 | { |
4ac4360b | 1456 | struct serial_struct sio; |
1f8ec435 | 1457 | struct stlibrd *brdp; |
1da177e4 LT |
1458 | |
1459 | memset(&sio, 0, sizeof(struct serial_struct)); | |
1460 | sio.type = PORT_UNKNOWN; | |
1461 | sio.line = portp->portnr; | |
1462 | sio.irq = 0; | |
b02f5ad6 | 1463 | sio.flags = portp->port.flags; |
1da177e4 | 1464 | sio.baud_base = portp->baud_base; |
a6614999 | 1465 | sio.close_delay = portp->port.close_delay; |
1da177e4 LT |
1466 | sio.closing_wait = portp->closing_wait; |
1467 | sio.custom_divisor = portp->custom_divisor; | |
1468 | sio.xmit_fifo_size = 0; | |
1469 | sio.hub6 = 0; | |
1470 | ||
1471 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1472 | if (brdp != NULL) |
1da177e4 LT |
1473 | sio.port = brdp->iobase; |
1474 | ||
1475 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? | |
1476 | -EFAULT : 0; | |
1477 | } | |
1478 | ||
1479 | /*****************************************************************************/ | |
1480 | ||
1481 | /* | |
1482 | * Set port according to the serial struct info. | |
1483 | * At this point we do not do any auto-configure stuff, so we will | |
1484 | * just quietly ignore any requests to change irq, etc. | |
1485 | */ | |
1486 | ||
d18a750f | 1487 | static int stli_setserial(struct tty_struct *tty, struct serial_struct __user *sp) |
1da177e4 | 1488 | { |
4ac4360b AC |
1489 | struct serial_struct sio; |
1490 | int rc; | |
d18a750f | 1491 | struct stliport *portp = tty->driver_data; |
1da177e4 LT |
1492 | |
1493 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) | |
1494 | return -EFAULT; | |
1495 | if (!capable(CAP_SYS_ADMIN)) { | |
1496 | if ((sio.baud_base != portp->baud_base) || | |
a6614999 | 1497 | (sio.close_delay != portp->port.close_delay) || |
1da177e4 | 1498 | ((sio.flags & ~ASYNC_USR_MASK) != |
b02f5ad6 | 1499 | (portp->port.flags & ~ASYNC_USR_MASK))) |
4ac4360b | 1500 | return -EPERM; |
1da177e4 LT |
1501 | } |
1502 | ||
b02f5ad6 | 1503 | portp->port.flags = (portp->port.flags & ~ASYNC_USR_MASK) | |
1da177e4 LT |
1504 | (sio.flags & ASYNC_USR_MASK); |
1505 | portp->baud_base = sio.baud_base; | |
a6614999 | 1506 | portp->port.close_delay = sio.close_delay; |
1da177e4 LT |
1507 | portp->closing_wait = sio.closing_wait; |
1508 | portp->custom_divisor = sio.custom_divisor; | |
1509 | ||
d18a750f | 1510 | if ((rc = stli_setport(tty)) < 0) |
4ac4360b AC |
1511 | return rc; |
1512 | return 0; | |
1da177e4 LT |
1513 | } |
1514 | ||
1515 | /*****************************************************************************/ | |
1516 | ||
1517 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) | |
1518 | { | |
1f8ec435 JS |
1519 | struct stliport *portp = tty->driver_data; |
1520 | struct stlibrd *brdp; | |
1da177e4 LT |
1521 | int rc; |
1522 | ||
4ac4360b AC |
1523 | if (portp == NULL) |
1524 | return -ENODEV; | |
1328d737 | 1525 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1526 | return 0; |
1da177e4 | 1527 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1528 | if (brdp == NULL) |
1529 | return 0; | |
1da177e4 | 1530 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1531 | return -EIO; |
1da177e4 LT |
1532 | |
1533 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, | |
1534 | &portp->asig, sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1535 | return rc; |
1da177e4 LT |
1536 | |
1537 | return stli_mktiocm(portp->asig.sigvalue); | |
1538 | } | |
1539 | ||
1540 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, | |
1541 | unsigned int set, unsigned int clear) | |
1542 | { | |
1f8ec435 JS |
1543 | struct stliport *portp = tty->driver_data; |
1544 | struct stlibrd *brdp; | |
1da177e4 LT |
1545 | int rts = -1, dtr = -1; |
1546 | ||
4ac4360b AC |
1547 | if (portp == NULL) |
1548 | return -ENODEV; | |
1328d737 | 1549 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1550 | return 0; |
1da177e4 | 1551 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1552 | if (brdp == NULL) |
1553 | return 0; | |
1da177e4 | 1554 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1555 | return -EIO; |
1da177e4 LT |
1556 | |
1557 | if (set & TIOCM_RTS) | |
1558 | rts = 1; | |
1559 | if (set & TIOCM_DTR) | |
1560 | dtr = 1; | |
1561 | if (clear & TIOCM_RTS) | |
1562 | rts = 0; | |
1563 | if (clear & TIOCM_DTR) | |
1564 | dtr = 0; | |
1565 | ||
1566 | stli_mkasysigs(&portp->asig, dtr, rts); | |
1567 | ||
1568 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1569 | sizeof(asysigs_t), 0); | |
1570 | } | |
1571 | ||
1572 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1573 | { | |
1f8ec435 JS |
1574 | struct stliport *portp; |
1575 | struct stlibrd *brdp; | |
4ac4360b | 1576 | int rc; |
1da177e4 LT |
1577 | void __user *argp = (void __user *)arg; |
1578 | ||
1da177e4 | 1579 | portp = tty->driver_data; |
4ac4360b AC |
1580 | if (portp == NULL) |
1581 | return -ENODEV; | |
1328d737 | 1582 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1583 | return 0; |
1da177e4 | 1584 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1585 | if (brdp == NULL) |
1586 | return 0; | |
1da177e4 LT |
1587 | |
1588 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && | |
1589 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { | |
1590 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
4ac4360b | 1591 | return -EIO; |
1da177e4 LT |
1592 | } |
1593 | ||
1594 | rc = 0; | |
1595 | ||
1596 | switch (cmd) { | |
1da177e4 LT |
1597 | case TIOCGSERIAL: |
1598 | rc = stli_getserial(portp, argp); | |
1599 | break; | |
1600 | case TIOCSSERIAL: | |
d18a750f | 1601 | rc = stli_setserial(tty, argp); |
1da177e4 LT |
1602 | break; |
1603 | case STL_GETPFLAG: | |
1604 | rc = put_user(portp->pflag, (unsigned __user *)argp); | |
1605 | break; | |
1606 | case STL_SETPFLAG: | |
1607 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) | |
d18a750f | 1608 | stli_setport(tty); |
1da177e4 LT |
1609 | break; |
1610 | case COM_GETPORTSTATS: | |
d18a750f | 1611 | rc = stli_getportstats(tty, portp, argp); |
1da177e4 LT |
1612 | break; |
1613 | case COM_CLRPORTSTATS: | |
1614 | rc = stli_clrportstats(portp, argp); | |
1615 | break; | |
1616 | case TIOCSERCONFIG: | |
1617 | case TIOCSERGWILD: | |
1618 | case TIOCSERSWILD: | |
1619 | case TIOCSERGETLSR: | |
1620 | case TIOCSERGSTRUCT: | |
1621 | case TIOCSERGETMULTI: | |
1622 | case TIOCSERSETMULTI: | |
1623 | default: | |
1624 | rc = -ENOIOCTLCMD; | |
1625 | break; | |
1626 | } | |
1627 | ||
4ac4360b | 1628 | return rc; |
1da177e4 LT |
1629 | } |
1630 | ||
1631 | /*****************************************************************************/ | |
1632 | ||
1633 | /* | |
1634 | * This routine assumes that we have user context and can sleep. | |
1635 | * Looks like it is true for the current ttys implementation..!! | |
1636 | */ | |
1637 | ||
606d099c | 1638 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old) |
1da177e4 | 1639 | { |
1f8ec435 JS |
1640 | struct stliport *portp; |
1641 | struct stlibrd *brdp; | |
606d099c | 1642 | struct ktermios *tiosp; |
4ac4360b | 1643 | asyport_t aport; |
1da177e4 | 1644 | |
1da177e4 | 1645 | portp = tty->driver_data; |
4ac4360b | 1646 | if (portp == NULL) |
1da177e4 | 1647 | return; |
1328d737 | 1648 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1649 | return; |
1650 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1651 | if (brdp == NULL) |
1da177e4 LT |
1652 | return; |
1653 | ||
1654 | tiosp = tty->termios; | |
1da177e4 | 1655 | |
d18a750f | 1656 | stli_mkasyport(tty, portp, &aport, tiosp); |
1da177e4 LT |
1657 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); |
1658 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); | |
1659 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1660 | sizeof(asysigs_t), 0); | |
1661 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) | |
1662 | tty->hw_stopped = 0; | |
1663 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) | |
b02f5ad6 | 1664 | wake_up_interruptible(&portp->port.open_wait); |
1da177e4 LT |
1665 | } |
1666 | ||
1667 | /*****************************************************************************/ | |
1668 | ||
1669 | /* | |
1670 | * Attempt to flow control who ever is sending us data. We won't really | |
1671 | * do any flow control action here. We can't directly, and even if we | |
1672 | * wanted to we would have to send a command to the slave. The slave | |
1673 | * knows how to flow control, and will do so when its buffers reach its | |
1674 | * internal high water marks. So what we will do is set a local state | |
1675 | * bit that will stop us sending any RX data up from the poll routine | |
1676 | * (which is the place where RX data from the slave is handled). | |
1677 | */ | |
1678 | ||
1679 | static void stli_throttle(struct tty_struct *tty) | |
1680 | { | |
1f8ec435 | 1681 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1682 | if (portp == NULL) |
1da177e4 | 1683 | return; |
1da177e4 LT |
1684 | set_bit(ST_RXSTOP, &portp->state); |
1685 | } | |
1686 | ||
1687 | /*****************************************************************************/ | |
1688 | ||
1689 | /* | |
1690 | * Unflow control the device sending us data... That means that all | |
1691 | * we have to do is clear the RXSTOP state bit. The next poll call | |
1692 | * will then be able to pass the RX data back up. | |
1693 | */ | |
1694 | ||
1695 | static void stli_unthrottle(struct tty_struct *tty) | |
1696 | { | |
1f8ec435 | 1697 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1698 | if (portp == NULL) |
1da177e4 | 1699 | return; |
1da177e4 LT |
1700 | clear_bit(ST_RXSTOP, &portp->state); |
1701 | } | |
1702 | ||
1703 | /*****************************************************************************/ | |
1704 | ||
1705 | /* | |
4ac4360b | 1706 | * Stop the transmitter. |
1da177e4 LT |
1707 | */ |
1708 | ||
1709 | static void stli_stop(struct tty_struct *tty) | |
1710 | { | |
1da177e4 LT |
1711 | } |
1712 | ||
1713 | /*****************************************************************************/ | |
1714 | ||
1715 | /* | |
4ac4360b | 1716 | * Start the transmitter again. |
1da177e4 LT |
1717 | */ |
1718 | ||
1719 | static void stli_start(struct tty_struct *tty) | |
1720 | { | |
1da177e4 LT |
1721 | } |
1722 | ||
1723 | /*****************************************************************************/ | |
1724 | ||
1da177e4 LT |
1725 | /* |
1726 | * Hangup this port. This is pretty much like closing the port, only | |
1727 | * a little more brutal. No waiting for data to drain. Shutdown the | |
1728 | * port and maybe drop signals. This is rather tricky really. We want | |
1729 | * to close the port as well. | |
1730 | */ | |
1731 | ||
1732 | static void stli_hangup(struct tty_struct *tty) | |
1733 | { | |
1f8ec435 JS |
1734 | struct stliport *portp; |
1735 | struct stlibrd *brdp; | |
2a6eadbd | 1736 | struct tty_port *port; |
4ac4360b | 1737 | unsigned long flags; |
1da177e4 | 1738 | |
1da177e4 | 1739 | portp = tty->driver_data; |
4ac4360b | 1740 | if (portp == NULL) |
1da177e4 | 1741 | return; |
1328d737 | 1742 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1743 | return; |
1744 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1745 | if (brdp == NULL) |
1da177e4 | 1746 | return; |
2a6eadbd | 1747 | port = &portp->port; |
1da177e4 | 1748 | |
2a6eadbd AC |
1749 | spin_lock_irqsave(&port->lock, flags); |
1750 | port->flags &= ~ASYNC_INITIALIZED; | |
1751 | spin_unlock_irqrestore(&port->lock, flags); | |
1da177e4 | 1752 | |
4ac4360b | 1753 | if (!test_bit(ST_CLOSING, &portp->state)) |
1da177e4 | 1754 | stli_rawclose(brdp, portp, 0, 0); |
4ac4360b AC |
1755 | |
1756 | spin_lock_irqsave(&stli_lock, flags); | |
1da177e4 LT |
1757 | if (tty->termios->c_cflag & HUPCL) { |
1758 | stli_mkasysigs(&portp->asig, 0, 0); | |
1759 | if (test_bit(ST_CMDING, &portp->state)) { | |
1760 | set_bit(ST_DOSIGS, &portp->state); | |
1761 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1762 | set_bit(ST_DOFLUSHRX, &portp->state); | |
1763 | } else { | |
1764 | stli_sendcmd(brdp, portp, A_SETSIGNALSF, | |
1765 | &portp->asig, sizeof(asysigs_t), 0); | |
1766 | } | |
1767 | } | |
1da177e4 LT |
1768 | |
1769 | clear_bit(ST_TXBUSY, &portp->state); | |
1770 | clear_bit(ST_RXSTOP, &portp->state); | |
1771 | set_bit(TTY_IO_ERROR, &tty->flags); | |
4ac4360b AC |
1772 | spin_unlock_irqrestore(&stli_lock, flags); |
1773 | ||
2a6eadbd | 1774 | tty_port_hangup(port); |
1da177e4 LT |
1775 | } |
1776 | ||
1777 | /*****************************************************************************/ | |
1778 | ||
1779 | /* | |
1780 | * Flush characters from the lower buffer. We may not have user context | |
1781 | * so we cannot sleep waiting for it to complete. Also we need to check | |
1782 | * if there is chars for this port in the TX cook buffer, and flush them | |
1783 | * as well. | |
1784 | */ | |
1785 | ||
1786 | static void stli_flushbuffer(struct tty_struct *tty) | |
1787 | { | |
1f8ec435 JS |
1788 | struct stliport *portp; |
1789 | struct stlibrd *brdp; | |
4ac4360b | 1790 | unsigned long ftype, flags; |
1da177e4 | 1791 | |
1da177e4 | 1792 | portp = tty->driver_data; |
4ac4360b | 1793 | if (portp == NULL) |
1da177e4 | 1794 | return; |
1328d737 | 1795 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1796 | return; |
1797 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1798 | if (brdp == NULL) |
1da177e4 LT |
1799 | return; |
1800 | ||
4ac4360b | 1801 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1802 | if (tty == stli_txcooktty) { |
4ac4360b | 1803 | stli_txcooktty = NULL; |
1da177e4 LT |
1804 | stli_txcooksize = 0; |
1805 | stli_txcookrealsize = 0; | |
1806 | } | |
1807 | if (test_bit(ST_CMDING, &portp->state)) { | |
1808 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1809 | } else { | |
1810 | ftype = FLUSHTX; | |
1811 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { | |
1812 | ftype |= FLUSHRX; | |
1813 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
1814 | } | |
4ac4360b | 1815 | __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); |
1da177e4 | 1816 | } |
4ac4360b AC |
1817 | spin_unlock_irqrestore(&brd_lock, flags); |
1818 | tty_wakeup(tty); | |
1da177e4 LT |
1819 | } |
1820 | ||
1821 | /*****************************************************************************/ | |
1822 | ||
9e98966c | 1823 | static int stli_breakctl(struct tty_struct *tty, int state) |
1da177e4 | 1824 | { |
1f8ec435 JS |
1825 | struct stlibrd *brdp; |
1826 | struct stliport *portp; | |
1da177e4 | 1827 | long arg; |
1da177e4 | 1828 | |
1da177e4 | 1829 | portp = tty->driver_data; |
4ac4360b | 1830 | if (portp == NULL) |
9e98966c | 1831 | return -EINVAL; |
1328d737 | 1832 | if (portp->brdnr >= stli_nrbrds) |
9e98966c | 1833 | return -EINVAL; |
1da177e4 | 1834 | brdp = stli_brds[portp->brdnr]; |
4ac4360b | 1835 | if (brdp == NULL) |
9e98966c | 1836 | return -EINVAL; |
1da177e4 | 1837 | |
1da177e4 LT |
1838 | arg = (state == -1) ? BREAKON : BREAKOFF; |
1839 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); | |
9e98966c | 1840 | return 0; |
1da177e4 LT |
1841 | } |
1842 | ||
1843 | /*****************************************************************************/ | |
1844 | ||
1845 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) | |
1846 | { | |
1f8ec435 | 1847 | struct stliport *portp; |
4ac4360b | 1848 | unsigned long tend; |
1da177e4 | 1849 | |
1da177e4 | 1850 | portp = tty->driver_data; |
4ac4360b | 1851 | if (portp == NULL) |
1da177e4 LT |
1852 | return; |
1853 | ||
1854 | if (timeout == 0) | |
1855 | timeout = HZ; | |
1856 | tend = jiffies + timeout; | |
1857 | ||
1858 | while (test_bit(ST_TXBUSY, &portp->state)) { | |
1859 | if (signal_pending(current)) | |
1860 | break; | |
1861 | msleep_interruptible(20); | |
1862 | if (time_after_eq(jiffies, tend)) | |
1863 | break; | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | /*****************************************************************************/ | |
1868 | ||
1869 | static void stli_sendxchar(struct tty_struct *tty, char ch) | |
1870 | { | |
1f8ec435 JS |
1871 | struct stlibrd *brdp; |
1872 | struct stliport *portp; | |
1da177e4 LT |
1873 | asyctrl_t actrl; |
1874 | ||
1da177e4 | 1875 | portp = tty->driver_data; |
4ac4360b | 1876 | if (portp == NULL) |
1da177e4 | 1877 | return; |
1328d737 | 1878 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1879 | return; |
1880 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1881 | if (brdp == NULL) |
1da177e4 LT |
1882 | return; |
1883 | ||
1884 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
1885 | if (ch == STOP_CHAR(tty)) { | |
1886 | actrl.rxctrl = CT_STOPFLOW; | |
1887 | } else if (ch == START_CHAR(tty)) { | |
1888 | actrl.rxctrl = CT_STARTFLOW; | |
1889 | } else { | |
1890 | actrl.txctrl = CT_SENDCHR; | |
1891 | actrl.tximdch = ch; | |
1892 | } | |
1da177e4 LT |
1893 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
1894 | } | |
1895 | ||
1896 | /*****************************************************************************/ | |
1897 | ||
1898 | #define MAXLINE 80 | |
1899 | ||
1900 | /* | |
1901 | * Format info for a specified port. The line is deliberately limited | |
1902 | * to 80 characters. (If it is too long it will be truncated, if too | |
1903 | * short then padded with spaces). | |
1904 | */ | |
1905 | ||
1f8ec435 | 1906 | static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos) |
1da177e4 | 1907 | { |
4ac4360b AC |
1908 | char *sp, *uart; |
1909 | int rc, cnt; | |
1da177e4 | 1910 | |
d18a750f | 1911 | rc = stli_portcmdstats(NULL, portp); |
1da177e4 LT |
1912 | |
1913 | uart = "UNKNOWN"; | |
1914 | if (brdp->state & BST_STARTED) { | |
1915 | switch (stli_comstats.hwid) { | |
4ac4360b AC |
1916 | case 0: uart = "2681"; break; |
1917 | case 1: uart = "SC26198"; break; | |
1918 | default:uart = "CD1400"; break; | |
1da177e4 LT |
1919 | } |
1920 | } | |
1921 | ||
1922 | sp = pos; | |
1923 | sp += sprintf(sp, "%d: uart:%s ", portnr, uart); | |
1924 | ||
1925 | if ((brdp->state & BST_STARTED) && (rc >= 0)) { | |
1926 | sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal, | |
1927 | (int) stli_comstats.rxtotal); | |
1928 | ||
1929 | if (stli_comstats.rxframing) | |
1930 | sp += sprintf(sp, " fe:%d", | |
1931 | (int) stli_comstats.rxframing); | |
1932 | if (stli_comstats.rxparity) | |
1933 | sp += sprintf(sp, " pe:%d", | |
1934 | (int) stli_comstats.rxparity); | |
1935 | if (stli_comstats.rxbreaks) | |
1936 | sp += sprintf(sp, " brk:%d", | |
1937 | (int) stli_comstats.rxbreaks); | |
1938 | if (stli_comstats.rxoverrun) | |
1939 | sp += sprintf(sp, " oe:%d", | |
1940 | (int) stli_comstats.rxoverrun); | |
1941 | ||
1942 | cnt = sprintf(sp, "%s%s%s%s%s ", | |
1943 | (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "", | |
1944 | (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "", | |
1945 | (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "", | |
1946 | (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "", | |
1947 | (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : ""); | |
1948 | *sp = ' '; | |
1949 | sp += cnt; | |
1950 | } | |
1951 | ||
1952 | for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++) | |
1953 | *sp++ = ' '; | |
1954 | if (cnt >= MAXLINE) | |
1955 | pos[(MAXLINE - 2)] = '+'; | |
1956 | pos[(MAXLINE - 1)] = '\n'; | |
1957 | ||
1958 | return(MAXLINE); | |
1959 | } | |
1960 | ||
1961 | /*****************************************************************************/ | |
1962 | ||
1963 | /* | |
1964 | * Port info, read from the /proc file system. | |
1965 | */ | |
1966 | ||
1967 | static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data) | |
1968 | { | |
1f8ec435 JS |
1969 | struct stlibrd *brdp; |
1970 | struct stliport *portp; | |
1328d737 | 1971 | unsigned int brdnr, portnr, totalport; |
4ac4360b AC |
1972 | int curoff, maxoff; |
1973 | char *pos; | |
1da177e4 LT |
1974 | |
1975 | pos = page; | |
1976 | totalport = 0; | |
1977 | curoff = 0; | |
1978 | ||
1979 | if (off == 0) { | |
1980 | pos += sprintf(pos, "%s: version %s", stli_drvtitle, | |
1981 | stli_drvversion); | |
1982 | while (pos < (page + MAXLINE - 1)) | |
1983 | *pos++ = ' '; | |
1984 | *pos++ = '\n'; | |
1985 | } | |
1986 | curoff = MAXLINE; | |
1987 | ||
1988 | /* | |
1989 | * We scan through for each board, panel and port. The offset is | |
1990 | * calculated on the fly, and irrelevant ports are skipped. | |
1991 | */ | |
1992 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
1993 | brdp = stli_brds[brdnr]; | |
4ac4360b | 1994 | if (brdp == NULL) |
1da177e4 LT |
1995 | continue; |
1996 | if (brdp->state == 0) | |
1997 | continue; | |
1998 | ||
1999 | maxoff = curoff + (brdp->nrports * MAXLINE); | |
2000 | if (off >= maxoff) { | |
2001 | curoff = maxoff; | |
2002 | continue; | |
2003 | } | |
2004 | ||
2005 | totalport = brdnr * STL_MAXPORTS; | |
2006 | for (portnr = 0; (portnr < brdp->nrports); portnr++, | |
2007 | totalport++) { | |
2008 | portp = brdp->ports[portnr]; | |
4ac4360b | 2009 | if (portp == NULL) |
1da177e4 LT |
2010 | continue; |
2011 | if (off >= (curoff += MAXLINE)) | |
2012 | continue; | |
2013 | if ((pos - page + MAXLINE) > count) | |
2014 | goto stli_readdone; | |
2015 | pos += stli_portinfo(brdp, portp, totalport, pos); | |
2016 | } | |
2017 | } | |
2018 | ||
2019 | *eof = 1; | |
2020 | ||
2021 | stli_readdone: | |
2022 | *start = page; | |
2023 | return(pos - page); | |
2024 | } | |
2025 | ||
2026 | /*****************************************************************************/ | |
2027 | ||
2028 | /* | |
2029 | * Generic send command routine. This will send a message to the slave, | |
2030 | * of the specified type with the specified argument. Must be very | |
2031 | * careful of data that will be copied out from shared memory - | |
2032 | * containing command results. The command completion is all done from | |
2033 | * a poll routine that does not have user context. Therefore you cannot | |
2034 | * copy back directly into user space, or to the kernel stack of a | |
2035 | * process. This routine does not sleep, so can be called from anywhere. | |
4ac4360b AC |
2036 | * |
2037 | * The caller must hold the brd_lock (see also stli_sendcmd the usual | |
2038 | * entry point) | |
1da177e4 LT |
2039 | */ |
2040 | ||
1f8ec435 | 2041 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 2042 | { |
4ac4360b AC |
2043 | cdkhdr_t __iomem *hdrp; |
2044 | cdkctrl_t __iomem *cp; | |
2045 | unsigned char __iomem *bits; | |
1da177e4 LT |
2046 | |
2047 | if (test_bit(ST_CMDING, &portp->state)) { | |
a6614999 | 2048 | printk(KERN_ERR "istallion: command already busy, cmd=%x!\n", |
1da177e4 | 2049 | (int) cmd); |
1da177e4 LT |
2050 | return; |
2051 | } | |
2052 | ||
2053 | EBRDENABLE(brdp); | |
4ac4360b | 2054 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1da177e4 | 2055 | if (size > 0) { |
4ac4360b | 2056 | memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); |
1da177e4 LT |
2057 | if (copyback) { |
2058 | portp->argp = arg; | |
2059 | portp->argsize = size; | |
2060 | } | |
2061 | } | |
4ac4360b AC |
2062 | writel(0, &cp->status); |
2063 | writel(cmd, &cp->cmd); | |
2064 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
2065 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 2066 | portp->portidx; |
4ac4360b | 2067 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
2068 | set_bit(ST_CMDING, &portp->state); |
2069 | EBRDDISABLE(brdp); | |
4ac4360b AC |
2070 | } |
2071 | ||
1f8ec435 | 2072 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
4ac4360b AC |
2073 | { |
2074 | unsigned long flags; | |
2075 | ||
2076 | spin_lock_irqsave(&brd_lock, flags); | |
2077 | __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
2078 | spin_unlock_irqrestore(&brd_lock, flags); | |
1da177e4 LT |
2079 | } |
2080 | ||
2081 | /*****************************************************************************/ | |
2082 | ||
2083 | /* | |
2084 | * Read data from shared memory. This assumes that the shared memory | |
2085 | * is enabled and that interrupts are off. Basically we just empty out | |
2086 | * the shared memory buffer into the tty buffer. Must be careful to | |
2087 | * handle the case where we fill up the tty buffer, but still have | |
2088 | * more chars to unload. | |
2089 | */ | |
2090 | ||
1f8ec435 | 2091 | static void stli_read(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2092 | { |
4ac4360b AC |
2093 | cdkasyrq_t __iomem *rp; |
2094 | char __iomem *shbuf; | |
1da177e4 | 2095 | struct tty_struct *tty; |
4ac4360b AC |
2096 | unsigned int head, tail, size; |
2097 | unsigned int len, stlen; | |
1da177e4 LT |
2098 | |
2099 | if (test_bit(ST_RXSTOP, &portp->state)) | |
2100 | return; | |
d18a750f | 2101 | tty = tty_port_tty_get(&portp->port); |
4ac4360b | 2102 | if (tty == NULL) |
1da177e4 LT |
2103 | return; |
2104 | ||
4ac4360b AC |
2105 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2106 | head = (unsigned int) readw(&rp->head); | |
2107 | if (head != ((unsigned int) readw(&rp->head))) | |
2108 | head = (unsigned int) readw(&rp->head); | |
2109 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
2110 | size = portp->rxsize; |
2111 | if (head >= tail) { | |
2112 | len = head - tail; | |
2113 | stlen = len; | |
2114 | } else { | |
2115 | len = size - (tail - head); | |
2116 | stlen = size - tail; | |
2117 | } | |
2118 | ||
33f0f88f | 2119 | len = tty_buffer_request_room(tty, len); |
4ac4360b AC |
2120 | |
2121 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); | |
1da177e4 LT |
2122 | |
2123 | while (len > 0) { | |
4ac4360b AC |
2124 | unsigned char *cptr; |
2125 | ||
a3f8d9d5 | 2126 | stlen = min(len, stlen); |
4ac4360b AC |
2127 | tty_prepare_flip_string(tty, &cptr, stlen); |
2128 | memcpy_fromio(cptr, shbuf + tail, stlen); | |
1da177e4 LT |
2129 | len -= stlen; |
2130 | tail += stlen; | |
2131 | if (tail >= size) { | |
2132 | tail = 0; | |
2133 | stlen = head; | |
2134 | } | |
2135 | } | |
4ac4360b AC |
2136 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2137 | writew(tail, &rp->tail); | |
1da177e4 LT |
2138 | |
2139 | if (head != tail) | |
2140 | set_bit(ST_RXING, &portp->state); | |
2141 | ||
2142 | tty_schedule_flip(tty); | |
d18a750f | 2143 | tty_kref_put(tty); |
1da177e4 LT |
2144 | } |
2145 | ||
2146 | /*****************************************************************************/ | |
2147 | ||
2148 | /* | |
2149 | * Set up and carry out any delayed commands. There is only a small set | |
2150 | * of slave commands that can be done "off-level". So it is not too | |
2151 | * difficult to deal with them here. | |
2152 | */ | |
2153 | ||
1f8ec435 | 2154 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp) |
1da177e4 | 2155 | { |
4ac4360b | 2156 | int cmd; |
1da177e4 LT |
2157 | |
2158 | if (test_bit(ST_DOSIGS, &portp->state)) { | |
2159 | if (test_bit(ST_DOFLUSHTX, &portp->state) && | |
2160 | test_bit(ST_DOFLUSHRX, &portp->state)) | |
2161 | cmd = A_SETSIGNALSF; | |
2162 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) | |
2163 | cmd = A_SETSIGNALSFTX; | |
2164 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) | |
2165 | cmd = A_SETSIGNALSFRX; | |
2166 | else | |
2167 | cmd = A_SETSIGNALS; | |
2168 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2169 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2170 | clear_bit(ST_DOSIGS, &portp->state); | |
4ac4360b | 2171 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, |
1da177e4 | 2172 | sizeof(asysigs_t)); |
4ac4360b AC |
2173 | writel(0, &cp->status); |
2174 | writel(cmd, &cp->cmd); | |
1da177e4 LT |
2175 | set_bit(ST_CMDING, &portp->state); |
2176 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || | |
2177 | test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2178 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); | |
2179 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); | |
2180 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2181 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
4ac4360b AC |
2182 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); |
2183 | writel(0, &cp->status); | |
2184 | writel(A_FLUSH, &cp->cmd); | |
1da177e4 LT |
2185 | set_bit(ST_CMDING, &portp->state); |
2186 | } | |
2187 | } | |
2188 | ||
2189 | /*****************************************************************************/ | |
2190 | ||
2191 | /* | |
2192 | * Host command service checking. This handles commands or messages | |
2193 | * coming from the slave to the host. Must have board shared memory | |
2194 | * enabled and interrupts off when called. Notice that by servicing the | |
2195 | * read data last we don't need to change the shared memory pointer | |
2196 | * during processing (which is a slow IO operation). | |
2197 | * Return value indicates if this port is still awaiting actions from | |
2198 | * the slave (like open, command, or even TX data being sent). If 0 | |
2199 | * then port is still busy, otherwise no longer busy. | |
2200 | */ | |
2201 | ||
1f8ec435 | 2202 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2203 | { |
4ac4360b AC |
2204 | cdkasy_t __iomem *ap; |
2205 | cdkctrl_t __iomem *cp; | |
2206 | struct tty_struct *tty; | |
2207 | asynotify_t nt; | |
2208 | unsigned long oldsigs; | |
2209 | int rc, donerx; | |
2210 | ||
2211 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); | |
1da177e4 LT |
2212 | cp = &ap->ctrl; |
2213 | ||
2214 | /* | |
2215 | * Check if we are waiting for an open completion message. | |
2216 | */ | |
2217 | if (test_bit(ST_OPENING, &portp->state)) { | |
4ac4360b AC |
2218 | rc = readl(&cp->openarg); |
2219 | if (readb(&cp->open) == 0 && rc != 0) { | |
1da177e4 LT |
2220 | if (rc > 0) |
2221 | rc--; | |
4ac4360b | 2222 | writel(0, &cp->openarg); |
1da177e4 LT |
2223 | portp->rc = rc; |
2224 | clear_bit(ST_OPENING, &portp->state); | |
2225 | wake_up_interruptible(&portp->raw_wait); | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | /* | |
2230 | * Check if we are waiting for a close completion message. | |
2231 | */ | |
2232 | if (test_bit(ST_CLOSING, &portp->state)) { | |
4ac4360b AC |
2233 | rc = (int) readl(&cp->closearg); |
2234 | if (readb(&cp->close) == 0 && rc != 0) { | |
1da177e4 LT |
2235 | if (rc > 0) |
2236 | rc--; | |
4ac4360b | 2237 | writel(0, &cp->closearg); |
1da177e4 LT |
2238 | portp->rc = rc; |
2239 | clear_bit(ST_CLOSING, &portp->state); | |
2240 | wake_up_interruptible(&portp->raw_wait); | |
2241 | } | |
2242 | } | |
2243 | ||
2244 | /* | |
2245 | * Check if we are waiting for a command completion message. We may | |
2246 | * need to copy out the command results associated with this command. | |
2247 | */ | |
2248 | if (test_bit(ST_CMDING, &portp->state)) { | |
4ac4360b AC |
2249 | rc = readl(&cp->status); |
2250 | if (readl(&cp->cmd) == 0 && rc != 0) { | |
1da177e4 LT |
2251 | if (rc > 0) |
2252 | rc--; | |
4ac4360b AC |
2253 | if (portp->argp != NULL) { |
2254 | memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), | |
1da177e4 | 2255 | portp->argsize); |
4ac4360b | 2256 | portp->argp = NULL; |
1da177e4 | 2257 | } |
4ac4360b | 2258 | writel(0, &cp->status); |
1da177e4 LT |
2259 | portp->rc = rc; |
2260 | clear_bit(ST_CMDING, &portp->state); | |
2261 | stli_dodelaycmd(portp, cp); | |
2262 | wake_up_interruptible(&portp->raw_wait); | |
2263 | } | |
2264 | } | |
2265 | ||
2266 | /* | |
2267 | * Check for any notification messages ready. This includes lots of | |
2268 | * different types of events - RX chars ready, RX break received, | |
2269 | * TX data low or empty in the slave, modem signals changed state. | |
2270 | */ | |
2271 | donerx = 0; | |
2272 | ||
2273 | if (ap->notify) { | |
2274 | nt = ap->changed; | |
2275 | ap->notify = 0; | |
d18a750f | 2276 | tty = tty_port_tty_get(&portp->port); |
1da177e4 LT |
2277 | |
2278 | if (nt.signal & SG_DCD) { | |
2279 | oldsigs = portp->sigs; | |
2280 | portp->sigs = stli_mktiocm(nt.sigvalue); | |
2281 | clear_bit(ST_GETSIGS, &portp->state); | |
2282 | if ((portp->sigs & TIOCM_CD) && | |
2283 | ((oldsigs & TIOCM_CD) == 0)) | |
b02f5ad6 | 2284 | wake_up_interruptible(&portp->port.open_wait); |
1da177e4 LT |
2285 | if ((oldsigs & TIOCM_CD) && |
2286 | ((portp->sigs & TIOCM_CD) == 0)) { | |
b02f5ad6 | 2287 | if (portp->port.flags & ASYNC_CHECK_CD) { |
1da177e4 | 2288 | if (tty) |
cfccaeea | 2289 | tty_hangup(tty); |
1da177e4 LT |
2290 | } |
2291 | } | |
2292 | } | |
2293 | ||
2294 | if (nt.data & DT_TXEMPTY) | |
2295 | clear_bit(ST_TXBUSY, &portp->state); | |
2296 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { | |
4ac4360b AC |
2297 | if (tty != NULL) { |
2298 | tty_wakeup(tty); | |
2299 | EBRDENABLE(brdp); | |
1da177e4 LT |
2300 | } |
2301 | } | |
2302 | ||
2303 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { | |
4ac4360b | 2304 | if (tty != NULL) { |
33f0f88f | 2305 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
b02f5ad6 | 2306 | if (portp->port.flags & ASYNC_SAK) { |
33f0f88f AC |
2307 | do_SAK(tty); |
2308 | EBRDENABLE(brdp); | |
1da177e4 | 2309 | } |
33f0f88f | 2310 | tty_schedule_flip(tty); |
1da177e4 LT |
2311 | } |
2312 | } | |
d18a750f | 2313 | tty_kref_put(tty); |
1da177e4 LT |
2314 | |
2315 | if (nt.data & DT_RXBUSY) { | |
2316 | donerx++; | |
2317 | stli_read(brdp, portp); | |
2318 | } | |
2319 | } | |
2320 | ||
2321 | /* | |
2322 | * It might seem odd that we are checking for more RX chars here. | |
2323 | * But, we need to handle the case where the tty buffer was previously | |
2324 | * filled, but we had more characters to pass up. The slave will not | |
2325 | * send any more RX notify messages until the RX buffer has been emptied. | |
2326 | * But it will leave the service bits on (since the buffer is not empty). | |
2327 | * So from here we can try to process more RX chars. | |
2328 | */ | |
2329 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { | |
2330 | clear_bit(ST_RXING, &portp->state); | |
2331 | stli_read(brdp, portp); | |
2332 | } | |
2333 | ||
2334 | return((test_bit(ST_OPENING, &portp->state) || | |
2335 | test_bit(ST_CLOSING, &portp->state) || | |
2336 | test_bit(ST_CMDING, &portp->state) || | |
2337 | test_bit(ST_TXBUSY, &portp->state) || | |
2338 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); | |
2339 | } | |
2340 | ||
2341 | /*****************************************************************************/ | |
2342 | ||
2343 | /* | |
2344 | * Service all ports on a particular board. Assumes that the boards | |
2345 | * shared memory is enabled, and that the page pointer is pointed | |
2346 | * at the cdk header structure. | |
2347 | */ | |
2348 | ||
1f8ec435 | 2349 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp) |
1da177e4 | 2350 | { |
1f8ec435 | 2351 | struct stliport *portp; |
4ac4360b AC |
2352 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; |
2353 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; | |
2354 | unsigned char __iomem *slavep; | |
2355 | int bitpos, bitat, bitsize; | |
2356 | int channr, nrdevs, slavebitchange; | |
1da177e4 LT |
2357 | |
2358 | bitsize = brdp->bitsize; | |
2359 | nrdevs = brdp->nrdevs; | |
2360 | ||
2361 | /* | |
2362 | * Check if slave wants any service. Basically we try to do as | |
2363 | * little work as possible here. There are 2 levels of service | |
2364 | * bits. So if there is nothing to do we bail early. We check | |
2365 | * 8 service bits at a time in the inner loop, so we can bypass | |
2366 | * the lot if none of them want service. | |
2367 | */ | |
4ac4360b | 2368 | memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), |
1da177e4 LT |
2369 | bitsize); |
2370 | ||
2371 | memset(&slavebits[0], 0, bitsize); | |
2372 | slavebitchange = 0; | |
2373 | ||
2374 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
2375 | if (hostbits[bitpos] == 0) | |
2376 | continue; | |
2377 | channr = bitpos * 8; | |
2378 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { | |
2379 | if (hostbits[bitpos] & bitat) { | |
2380 | portp = brdp->ports[(channr - 1)]; | |
2381 | if (stli_hostcmd(brdp, portp)) { | |
2382 | slavebitchange++; | |
2383 | slavebits[bitpos] |= bitat; | |
2384 | } | |
2385 | } | |
2386 | } | |
2387 | } | |
2388 | ||
2389 | /* | |
2390 | * If any of the ports are no longer busy then update them in the | |
2391 | * slave request bits. We need to do this after, since a host port | |
2392 | * service may initiate more slave requests. | |
2393 | */ | |
2394 | if (slavebitchange) { | |
4ac4360b AC |
2395 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2396 | slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; | |
1da177e4 | 2397 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
4ac4360b AC |
2398 | if (readb(slavebits + bitpos)) |
2399 | writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); | |
1da177e4 LT |
2400 | } |
2401 | } | |
2402 | } | |
2403 | ||
2404 | /*****************************************************************************/ | |
2405 | ||
2406 | /* | |
2407 | * Driver poll routine. This routine polls the boards in use and passes | |
2408 | * messages back up to host when necessary. This is actually very | |
2409 | * CPU efficient, since we will always have the kernel poll clock, it | |
2410 | * adds only a few cycles when idle (since board service can be | |
2411 | * determined very easily), but when loaded generates no interrupts | |
2412 | * (with their expensive associated context change). | |
2413 | */ | |
2414 | ||
2415 | static void stli_poll(unsigned long arg) | |
2416 | { | |
4ac4360b | 2417 | cdkhdr_t __iomem *hdrp; |
1f8ec435 | 2418 | struct stlibrd *brdp; |
1328d737 | 2419 | unsigned int brdnr; |
1da177e4 | 2420 | |
ff8efe97 | 2421 | mod_timer(&stli_timerlist, STLI_TIMEOUT); |
1da177e4 LT |
2422 | |
2423 | /* | |
2424 | * Check each board and do any servicing required. | |
2425 | */ | |
2426 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2427 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2428 | if (brdp == NULL) |
1da177e4 LT |
2429 | continue; |
2430 | if ((brdp->state & BST_STARTED) == 0) | |
2431 | continue; | |
2432 | ||
4ac4360b | 2433 | spin_lock(&brd_lock); |
1da177e4 | 2434 | EBRDENABLE(brdp); |
4ac4360b AC |
2435 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2436 | if (readb(&hdrp->hostreq)) | |
1da177e4 LT |
2437 | stli_brdpoll(brdp, hdrp); |
2438 | EBRDDISABLE(brdp); | |
4ac4360b | 2439 | spin_unlock(&brd_lock); |
1da177e4 LT |
2440 | } |
2441 | } | |
2442 | ||
2443 | /*****************************************************************************/ | |
2444 | ||
2445 | /* | |
2446 | * Translate the termios settings into the port setting structure of | |
2447 | * the slave. | |
2448 | */ | |
2449 | ||
d18a750f AC |
2450 | static void stli_mkasyport(struct tty_struct *tty, struct stliport *portp, |
2451 | asyport_t *pp, struct ktermios *tiosp) | |
1da177e4 | 2452 | { |
1da177e4 LT |
2453 | memset(pp, 0, sizeof(asyport_t)); |
2454 | ||
2455 | /* | |
2456 | * Start of by setting the baud, char size, parity and stop bit info. | |
2457 | */ | |
d18a750f | 2458 | pp->baudout = tty_get_baud_rate(tty); |
1da177e4 | 2459 | if ((tiosp->c_cflag & CBAUD) == B38400) { |
b02f5ad6 | 2460 | if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
1da177e4 | 2461 | pp->baudout = 57600; |
b02f5ad6 | 2462 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
1da177e4 | 2463 | pp->baudout = 115200; |
b02f5ad6 | 2464 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
1da177e4 | 2465 | pp->baudout = 230400; |
b02f5ad6 | 2466 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
1da177e4 | 2467 | pp->baudout = 460800; |
b02f5ad6 | 2468 | else if ((portp->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) |
1da177e4 LT |
2469 | pp->baudout = (portp->baud_base / portp->custom_divisor); |
2470 | } | |
2471 | if (pp->baudout > STL_MAXBAUD) | |
2472 | pp->baudout = STL_MAXBAUD; | |
2473 | pp->baudin = pp->baudout; | |
2474 | ||
2475 | switch (tiosp->c_cflag & CSIZE) { | |
2476 | case CS5: | |
2477 | pp->csize = 5; | |
2478 | break; | |
2479 | case CS6: | |
2480 | pp->csize = 6; | |
2481 | break; | |
2482 | case CS7: | |
2483 | pp->csize = 7; | |
2484 | break; | |
2485 | default: | |
2486 | pp->csize = 8; | |
2487 | break; | |
2488 | } | |
2489 | ||
2490 | if (tiosp->c_cflag & CSTOPB) | |
2491 | pp->stopbs = PT_STOP2; | |
2492 | else | |
2493 | pp->stopbs = PT_STOP1; | |
2494 | ||
2495 | if (tiosp->c_cflag & PARENB) { | |
2496 | if (tiosp->c_cflag & PARODD) | |
2497 | pp->parity = PT_ODDPARITY; | |
2498 | else | |
2499 | pp->parity = PT_EVENPARITY; | |
2500 | } else { | |
2501 | pp->parity = PT_NOPARITY; | |
2502 | } | |
2503 | ||
2504 | /* | |
2505 | * Set up any flow control options enabled. | |
2506 | */ | |
2507 | if (tiosp->c_iflag & IXON) { | |
2508 | pp->flow |= F_IXON; | |
2509 | if (tiosp->c_iflag & IXANY) | |
2510 | pp->flow |= F_IXANY; | |
2511 | } | |
2512 | if (tiosp->c_cflag & CRTSCTS) | |
2513 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); | |
2514 | ||
2515 | pp->startin = tiosp->c_cc[VSTART]; | |
2516 | pp->stopin = tiosp->c_cc[VSTOP]; | |
2517 | pp->startout = tiosp->c_cc[VSTART]; | |
2518 | pp->stopout = tiosp->c_cc[VSTOP]; | |
2519 | ||
2520 | /* | |
2521 | * Set up the RX char marking mask with those RX error types we must | |
2522 | * catch. We can get the slave to help us out a little here, it will | |
2523 | * ignore parity errors and breaks for us, and mark parity errors in | |
2524 | * the data stream. | |
2525 | */ | |
2526 | if (tiosp->c_iflag & IGNPAR) | |
2527 | pp->iflag |= FI_IGNRXERRS; | |
2528 | if (tiosp->c_iflag & IGNBRK) | |
2529 | pp->iflag |= FI_IGNBREAK; | |
2530 | ||
2531 | portp->rxmarkmsk = 0; | |
2532 | if (tiosp->c_iflag & (INPCK | PARMRK)) | |
2533 | pp->iflag |= FI_1MARKRXERRS; | |
2534 | if (tiosp->c_iflag & BRKINT) | |
2535 | portp->rxmarkmsk |= BRKINT; | |
2536 | ||
2537 | /* | |
2538 | * Set up clocal processing as required. | |
2539 | */ | |
2540 | if (tiosp->c_cflag & CLOCAL) | |
b02f5ad6 | 2541 | portp->port.flags &= ~ASYNC_CHECK_CD; |
1da177e4 | 2542 | else |
b02f5ad6 | 2543 | portp->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2544 | |
2545 | /* | |
2546 | * Transfer any persistent flags into the asyport structure. | |
2547 | */ | |
2548 | pp->pflag = (portp->pflag & 0xffff); | |
2549 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; | |
2550 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; | |
2551 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; | |
2552 | } | |
2553 | ||
2554 | /*****************************************************************************/ | |
2555 | ||
2556 | /* | |
2557 | * Construct a slave signals structure for setting the DTR and RTS | |
2558 | * signals as specified. | |
2559 | */ | |
2560 | ||
2561 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) | |
2562 | { | |
1da177e4 LT |
2563 | memset(sp, 0, sizeof(asysigs_t)); |
2564 | if (dtr >= 0) { | |
2565 | sp->signal |= SG_DTR; | |
2566 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); | |
2567 | } | |
2568 | if (rts >= 0) { | |
2569 | sp->signal |= SG_RTS; | |
2570 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); | |
2571 | } | |
2572 | } | |
2573 | ||
2574 | /*****************************************************************************/ | |
2575 | ||
2576 | /* | |
2577 | * Convert the signals returned from the slave into a local TIOCM type | |
2578 | * signals value. We keep them locally in TIOCM format. | |
2579 | */ | |
2580 | ||
2581 | static long stli_mktiocm(unsigned long sigvalue) | |
2582 | { | |
4ac4360b | 2583 | long tiocm = 0; |
1da177e4 LT |
2584 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); |
2585 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); | |
2586 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); | |
2587 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); | |
2588 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); | |
2589 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); | |
2590 | return(tiocm); | |
2591 | } | |
2592 | ||
2593 | /*****************************************************************************/ | |
2594 | ||
2595 | /* | |
2596 | * All panels and ports actually attached have been worked out. All | |
2597 | * we need to do here is set up the appropriate per port data structures. | |
2598 | */ | |
2599 | ||
1f8ec435 | 2600 | static int stli_initports(struct stlibrd *brdp) |
1da177e4 | 2601 | { |
1f8ec435 | 2602 | struct stliport *portp; |
1328d737 | 2603 | unsigned int i, panelnr, panelport; |
1da177e4 | 2604 | |
1da177e4 | 2605 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { |
1f8ec435 | 2606 | portp = kzalloc(sizeof(struct stliport), GFP_KERNEL); |
b0b4ed72 | 2607 | if (!portp) { |
a6614999 | 2608 | printk(KERN_WARNING "istallion: failed to allocate port structure\n"); |
1da177e4 LT |
2609 | continue; |
2610 | } | |
d18a750f | 2611 | tty_port_init(&portp->port); |
31f35939 | 2612 | portp->port.ops = &stli_port_ops; |
1da177e4 LT |
2613 | portp->magic = STLI_PORTMAGIC; |
2614 | portp->portnr = i; | |
2615 | portp->brdnr = brdp->brdnr; | |
2616 | portp->panelnr = panelnr; | |
2617 | portp->baud_base = STL_BAUDBASE; | |
a6614999 | 2618 | portp->port.close_delay = STL_CLOSEDELAY; |
1da177e4 | 2619 | portp->closing_wait = 30 * HZ; |
b02f5ad6 AC |
2620 | init_waitqueue_head(&portp->port.open_wait); |
2621 | init_waitqueue_head(&portp->port.close_wait); | |
1da177e4 LT |
2622 | init_waitqueue_head(&portp->raw_wait); |
2623 | panelport++; | |
2624 | if (panelport >= brdp->panels[panelnr]) { | |
2625 | panelport = 0; | |
2626 | panelnr++; | |
2627 | } | |
2628 | brdp->ports[i] = portp; | |
2629 | } | |
2630 | ||
4ac4360b | 2631 | return 0; |
1da177e4 LT |
2632 | } |
2633 | ||
2634 | /*****************************************************************************/ | |
2635 | ||
2636 | /* | |
2637 | * All the following routines are board specific hardware operations. | |
2638 | */ | |
2639 | ||
1f8ec435 | 2640 | static void stli_ecpinit(struct stlibrd *brdp) |
1da177e4 LT |
2641 | { |
2642 | unsigned long memconf; | |
2643 | ||
1da177e4 LT |
2644 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2645 | udelay(10); | |
2646 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2647 | udelay(100); | |
2648 | ||
2649 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; | |
2650 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); | |
2651 | } | |
2652 | ||
2653 | /*****************************************************************************/ | |
2654 | ||
1f8ec435 | 2655 | static void stli_ecpenable(struct stlibrd *brdp) |
1da177e4 | 2656 | { |
1da177e4 LT |
2657 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); |
2658 | } | |
2659 | ||
2660 | /*****************************************************************************/ | |
2661 | ||
1f8ec435 | 2662 | static void stli_ecpdisable(struct stlibrd *brdp) |
1da177e4 | 2663 | { |
1da177e4 LT |
2664 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
2665 | } | |
2666 | ||
2667 | /*****************************************************************************/ | |
2668 | ||
1f8ec435 | 2669 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2670 | { |
29756fa3 | 2671 | void __iomem *ptr; |
4ac4360b | 2672 | unsigned char val; |
1da177e4 LT |
2673 | |
2674 | if (offset > brdp->memsize) { | |
a6614999 | 2675 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2676 | "range at line=%d(%d), brd=%d\n", |
2677 | (int) offset, line, __LINE__, brdp->brdnr); | |
2678 | ptr = NULL; | |
2679 | val = 0; | |
2680 | } else { | |
2681 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); | |
2682 | val = (unsigned char) (offset / ECP_ATPAGESIZE); | |
2683 | } | |
2684 | outb(val, (brdp->iobase + ECP_ATMEMPR)); | |
2685 | return(ptr); | |
2686 | } | |
2687 | ||
2688 | /*****************************************************************************/ | |
2689 | ||
1f8ec435 | 2690 | static void stli_ecpreset(struct stlibrd *brdp) |
1da177e4 | 2691 | { |
1da177e4 LT |
2692 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2693 | udelay(10); | |
2694 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2695 | udelay(500); | |
2696 | } | |
2697 | ||
2698 | /*****************************************************************************/ | |
2699 | ||
1f8ec435 | 2700 | static void stli_ecpintr(struct stlibrd *brdp) |
1da177e4 | 2701 | { |
1da177e4 LT |
2702 | outb(0x1, brdp->iobase); |
2703 | } | |
2704 | ||
2705 | /*****************************************************************************/ | |
2706 | ||
2707 | /* | |
2708 | * The following set of functions act on ECP EISA boards. | |
2709 | */ | |
2710 | ||
1f8ec435 | 2711 | static void stli_ecpeiinit(struct stlibrd *brdp) |
1da177e4 LT |
2712 | { |
2713 | unsigned long memconf; | |
2714 | ||
1da177e4 LT |
2715 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
2716 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2717 | udelay(10); | |
2718 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2719 | udelay(500); | |
2720 | ||
2721 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; | |
2722 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); | |
2723 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; | |
2724 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); | |
2725 | } | |
2726 | ||
2727 | /*****************************************************************************/ | |
2728 | ||
1f8ec435 | 2729 | static void stli_ecpeienable(struct stlibrd *brdp) |
1da177e4 LT |
2730 | { |
2731 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); | |
2732 | } | |
2733 | ||
2734 | /*****************************************************************************/ | |
2735 | ||
1f8ec435 | 2736 | static void stli_ecpeidisable(struct stlibrd *brdp) |
1da177e4 LT |
2737 | { |
2738 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2739 | } | |
2740 | ||
2741 | /*****************************************************************************/ | |
2742 | ||
1f8ec435 | 2743 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2744 | { |
29756fa3 | 2745 | void __iomem *ptr; |
1da177e4 LT |
2746 | unsigned char val; |
2747 | ||
1da177e4 | 2748 | if (offset > brdp->memsize) { |
a6614999 | 2749 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2750 | "range at line=%d(%d), brd=%d\n", |
2751 | (int) offset, line, __LINE__, brdp->brdnr); | |
2752 | ptr = NULL; | |
2753 | val = 0; | |
2754 | } else { | |
2755 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); | |
2756 | if (offset < ECP_EIPAGESIZE) | |
2757 | val = ECP_EIENABLE; | |
2758 | else | |
2759 | val = ECP_EIENABLE | 0x40; | |
2760 | } | |
2761 | outb(val, (brdp->iobase + ECP_EICONFR)); | |
2762 | return(ptr); | |
2763 | } | |
2764 | ||
2765 | /*****************************************************************************/ | |
2766 | ||
1f8ec435 | 2767 | static void stli_ecpeireset(struct stlibrd *brdp) |
1da177e4 LT |
2768 | { |
2769 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2770 | udelay(10); | |
2771 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2772 | udelay(500); | |
2773 | } | |
2774 | ||
2775 | /*****************************************************************************/ | |
2776 | ||
2777 | /* | |
2778 | * The following set of functions act on ECP MCA boards. | |
2779 | */ | |
2780 | ||
1f8ec435 | 2781 | static void stli_ecpmcenable(struct stlibrd *brdp) |
1da177e4 LT |
2782 | { |
2783 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); | |
2784 | } | |
2785 | ||
2786 | /*****************************************************************************/ | |
2787 | ||
1f8ec435 | 2788 | static void stli_ecpmcdisable(struct stlibrd *brdp) |
1da177e4 LT |
2789 | { |
2790 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2791 | } | |
2792 | ||
2793 | /*****************************************************************************/ | |
2794 | ||
1f8ec435 | 2795 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2796 | { |
29756fa3 | 2797 | void __iomem *ptr; |
4ac4360b | 2798 | unsigned char val; |
1da177e4 LT |
2799 | |
2800 | if (offset > brdp->memsize) { | |
a6614999 | 2801 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2802 | "range at line=%d(%d), brd=%d\n", |
2803 | (int) offset, line, __LINE__, brdp->brdnr); | |
2804 | ptr = NULL; | |
2805 | val = 0; | |
2806 | } else { | |
2807 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); | |
2808 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; | |
2809 | } | |
2810 | outb(val, (brdp->iobase + ECP_MCCONFR)); | |
2811 | return(ptr); | |
2812 | } | |
2813 | ||
2814 | /*****************************************************************************/ | |
2815 | ||
1f8ec435 | 2816 | static void stli_ecpmcreset(struct stlibrd *brdp) |
1da177e4 LT |
2817 | { |
2818 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); | |
2819 | udelay(10); | |
2820 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2821 | udelay(500); | |
2822 | } | |
2823 | ||
2824 | /*****************************************************************************/ | |
2825 | ||
2826 | /* | |
2827 | * The following set of functions act on ECP PCI boards. | |
2828 | */ | |
2829 | ||
1f8ec435 | 2830 | static void stli_ecppciinit(struct stlibrd *brdp) |
1da177e4 | 2831 | { |
1da177e4 LT |
2832 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
2833 | udelay(10); | |
2834 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
2835 | udelay(500); | |
2836 | } | |
2837 | ||
2838 | /*****************************************************************************/ | |
2839 | ||
1f8ec435 | 2840 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2841 | { |
29756fa3 | 2842 | void __iomem *ptr; |
1da177e4 LT |
2843 | unsigned char val; |
2844 | ||
1da177e4 | 2845 | if (offset > brdp->memsize) { |
a6614999 | 2846 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2847 | "range at line=%d(%d), board=%d\n", |
2848 | (int) offset, line, __LINE__, brdp->brdnr); | |
2849 | ptr = NULL; | |
2850 | val = 0; | |
2851 | } else { | |
2852 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); | |
2853 | val = (offset / ECP_PCIPAGESIZE) << 1; | |
2854 | } | |
2855 | outb(val, (brdp->iobase + ECP_PCICONFR)); | |
2856 | return(ptr); | |
2857 | } | |
2858 | ||
2859 | /*****************************************************************************/ | |
2860 | ||
1f8ec435 | 2861 | static void stli_ecppcireset(struct stlibrd *brdp) |
1da177e4 LT |
2862 | { |
2863 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
2864 | udelay(10); | |
2865 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
2866 | udelay(500); | |
2867 | } | |
2868 | ||
2869 | /*****************************************************************************/ | |
2870 | ||
2871 | /* | |
2872 | * The following routines act on ONboards. | |
2873 | */ | |
2874 | ||
1f8ec435 | 2875 | static void stli_onbinit(struct stlibrd *brdp) |
1da177e4 LT |
2876 | { |
2877 | unsigned long memconf; | |
2878 | ||
1da177e4 LT |
2879 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
2880 | udelay(10); | |
2881 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
2882 | mdelay(1000); | |
2883 | ||
2884 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; | |
2885 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); | |
2886 | outb(0x1, brdp->iobase); | |
2887 | mdelay(1); | |
2888 | } | |
2889 | ||
2890 | /*****************************************************************************/ | |
2891 | ||
1f8ec435 | 2892 | static void stli_onbenable(struct stlibrd *brdp) |
1da177e4 | 2893 | { |
1da177e4 LT |
2894 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); |
2895 | } | |
2896 | ||
2897 | /*****************************************************************************/ | |
2898 | ||
1f8ec435 | 2899 | static void stli_onbdisable(struct stlibrd *brdp) |
1da177e4 | 2900 | { |
1da177e4 LT |
2901 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); |
2902 | } | |
2903 | ||
2904 | /*****************************************************************************/ | |
2905 | ||
1f8ec435 | 2906 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2907 | { |
29756fa3 | 2908 | void __iomem *ptr; |
1da177e4 | 2909 | |
1da177e4 | 2910 | if (offset > brdp->memsize) { |
a6614999 | 2911 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2912 | "range at line=%d(%d), brd=%d\n", |
2913 | (int) offset, line, __LINE__, brdp->brdnr); | |
2914 | ptr = NULL; | |
2915 | } else { | |
2916 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); | |
2917 | } | |
2918 | return(ptr); | |
2919 | } | |
2920 | ||
2921 | /*****************************************************************************/ | |
2922 | ||
1f8ec435 | 2923 | static void stli_onbreset(struct stlibrd *brdp) |
1da177e4 | 2924 | { |
1da177e4 LT |
2925 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
2926 | udelay(10); | |
2927 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
2928 | mdelay(1000); | |
2929 | } | |
2930 | ||
2931 | /*****************************************************************************/ | |
2932 | ||
2933 | /* | |
2934 | * The following routines act on ONboard EISA. | |
2935 | */ | |
2936 | ||
1f8ec435 | 2937 | static void stli_onbeinit(struct stlibrd *brdp) |
1da177e4 LT |
2938 | { |
2939 | unsigned long memconf; | |
2940 | ||
1da177e4 LT |
2941 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
2942 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
2943 | udelay(10); | |
2944 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
2945 | mdelay(1000); | |
2946 | ||
2947 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; | |
2948 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); | |
2949 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; | |
2950 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); | |
2951 | outb(0x1, brdp->iobase); | |
2952 | mdelay(1); | |
2953 | } | |
2954 | ||
2955 | /*****************************************************************************/ | |
2956 | ||
1f8ec435 | 2957 | static void stli_onbeenable(struct stlibrd *brdp) |
1da177e4 | 2958 | { |
1da177e4 LT |
2959 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); |
2960 | } | |
2961 | ||
2962 | /*****************************************************************************/ | |
2963 | ||
1f8ec435 | 2964 | static void stli_onbedisable(struct stlibrd *brdp) |
1da177e4 | 2965 | { |
1da177e4 LT |
2966 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
2967 | } | |
2968 | ||
2969 | /*****************************************************************************/ | |
2970 | ||
1f8ec435 | 2971 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2972 | { |
29756fa3 | 2973 | void __iomem *ptr; |
4ac4360b | 2974 | unsigned char val; |
1da177e4 LT |
2975 | |
2976 | if (offset > brdp->memsize) { | |
a6614999 | 2977 | printk(KERN_ERR "istallion: shared memory pointer=%x out of " |
1da177e4 LT |
2978 | "range at line=%d(%d), brd=%d\n", |
2979 | (int) offset, line, __LINE__, brdp->brdnr); | |
2980 | ptr = NULL; | |
2981 | val = 0; | |
2982 | } else { | |
2983 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); | |
2984 | if (offset < ONB_EIPAGESIZE) | |
2985 | val = ONB_EIENABLE; | |
2986 | else | |
2987 | val = ONB_EIENABLE | 0x40; | |
2988 | } | |
2989 | outb(val, (brdp->iobase + ONB_EICONFR)); | |
2990 | return(ptr); | |
2991 | } | |
2992 | ||
2993 | /*****************************************************************************/ | |
2994 | ||
1f8ec435 | 2995 | static void stli_onbereset(struct stlibrd *brdp) |
1da177e4 | 2996 | { |
1da177e4 LT |
2997 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
2998 | udelay(10); | |
2999 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3000 | mdelay(1000); | |
3001 | } | |
3002 | ||
3003 | /*****************************************************************************/ | |
3004 | ||
3005 | /* | |
3006 | * The following routines act on Brumby boards. | |
3007 | */ | |
3008 | ||
1f8ec435 | 3009 | static void stli_bbyinit(struct stlibrd *brdp) |
1da177e4 | 3010 | { |
1da177e4 LT |
3011 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3012 | udelay(10); | |
3013 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3014 | mdelay(1000); | |
3015 | outb(0x1, brdp->iobase); | |
3016 | mdelay(1); | |
3017 | } | |
3018 | ||
3019 | /*****************************************************************************/ | |
3020 | ||
1f8ec435 | 3021 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3022 | { |
29756fa3 | 3023 | void __iomem *ptr; |
4ac4360b | 3024 | unsigned char val; |
1da177e4 | 3025 | |
4ac4360b | 3026 | BUG_ON(offset > brdp->memsize); |
1da177e4 | 3027 | |
4ac4360b AC |
3028 | ptr = brdp->membase + (offset % BBY_PAGESIZE); |
3029 | val = (unsigned char) (offset / BBY_PAGESIZE); | |
1da177e4 LT |
3030 | outb(val, (brdp->iobase + BBY_ATCONFR)); |
3031 | return(ptr); | |
3032 | } | |
3033 | ||
3034 | /*****************************************************************************/ | |
3035 | ||
1f8ec435 | 3036 | static void stli_bbyreset(struct stlibrd *brdp) |
1da177e4 | 3037 | { |
1da177e4 LT |
3038 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3039 | udelay(10); | |
3040 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3041 | mdelay(1000); | |
3042 | } | |
3043 | ||
3044 | /*****************************************************************************/ | |
3045 | ||
3046 | /* | |
3047 | * The following routines act on original old Stallion boards. | |
3048 | */ | |
3049 | ||
1f8ec435 | 3050 | static void stli_stalinit(struct stlibrd *brdp) |
1da177e4 | 3051 | { |
1da177e4 LT |
3052 | outb(0x1, brdp->iobase); |
3053 | mdelay(1000); | |
3054 | } | |
3055 | ||
3056 | /*****************************************************************************/ | |
3057 | ||
1f8ec435 | 3058 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3059 | { |
4ac4360b AC |
3060 | BUG_ON(offset > brdp->memsize); |
3061 | return brdp->membase + (offset % STAL_PAGESIZE); | |
1da177e4 LT |
3062 | } |
3063 | ||
3064 | /*****************************************************************************/ | |
3065 | ||
1f8ec435 | 3066 | static void stli_stalreset(struct stlibrd *brdp) |
1da177e4 | 3067 | { |
4ac4360b | 3068 | u32 __iomem *vecp; |
1da177e4 | 3069 | |
4ac4360b AC |
3070 | vecp = (u32 __iomem *) (brdp->membase + 0x30); |
3071 | writel(0xffff0000, vecp); | |
1da177e4 LT |
3072 | outb(0, brdp->iobase); |
3073 | mdelay(1000); | |
3074 | } | |
3075 | ||
3076 | /*****************************************************************************/ | |
3077 | ||
3078 | /* | |
3079 | * Try to find an ECP board and initialize it. This handles only ECP | |
3080 | * board types. | |
3081 | */ | |
3082 | ||
1f8ec435 | 3083 | static int stli_initecp(struct stlibrd *brdp) |
1da177e4 | 3084 | { |
4ac4360b AC |
3085 | cdkecpsig_t sig; |
3086 | cdkecpsig_t __iomem *sigsp; | |
3087 | unsigned int status, nxtid; | |
3088 | char *name; | |
8f8f5a58 | 3089 | int retval, panelnr, nrports; |
1da177e4 | 3090 | |
8f8f5a58 JS |
3091 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) { |
3092 | retval = -ENODEV; | |
3093 | goto err; | |
3094 | } | |
3095 | ||
b306122d IK |
3096 | brdp->iosize = ECP_IOSIZE; |
3097 | ||
8f8f5a58 JS |
3098 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3099 | retval = -EIO; | |
3100 | goto err; | |
1da177e4 LT |
3101 | } |
3102 | ||
1da177e4 LT |
3103 | /* |
3104 | * Based on the specific board type setup the common vars to access | |
3105 | * and enable shared memory. Set all board specific information now | |
3106 | * as well. | |
3107 | */ | |
3108 | switch (brdp->brdtype) { | |
3109 | case BRD_ECP: | |
1da177e4 LT |
3110 | brdp->memsize = ECP_MEMSIZE; |
3111 | brdp->pagesize = ECP_ATPAGESIZE; | |
3112 | brdp->init = stli_ecpinit; | |
3113 | brdp->enable = stli_ecpenable; | |
3114 | brdp->reenable = stli_ecpenable; | |
3115 | brdp->disable = stli_ecpdisable; | |
3116 | brdp->getmemptr = stli_ecpgetmemptr; | |
3117 | brdp->intr = stli_ecpintr; | |
3118 | brdp->reset = stli_ecpreset; | |
3119 | name = "serial(EC8/64)"; | |
3120 | break; | |
3121 | ||
3122 | case BRD_ECPE: | |
1da177e4 LT |
3123 | brdp->memsize = ECP_MEMSIZE; |
3124 | brdp->pagesize = ECP_EIPAGESIZE; | |
3125 | brdp->init = stli_ecpeiinit; | |
3126 | brdp->enable = stli_ecpeienable; | |
3127 | brdp->reenable = stli_ecpeienable; | |
3128 | brdp->disable = stli_ecpeidisable; | |
3129 | brdp->getmemptr = stli_ecpeigetmemptr; | |
3130 | brdp->intr = stli_ecpintr; | |
3131 | brdp->reset = stli_ecpeireset; | |
3132 | name = "serial(EC8/64-EI)"; | |
3133 | break; | |
3134 | ||
3135 | case BRD_ECPMC: | |
1da177e4 LT |
3136 | brdp->memsize = ECP_MEMSIZE; |
3137 | brdp->pagesize = ECP_MCPAGESIZE; | |
3138 | brdp->init = NULL; | |
3139 | brdp->enable = stli_ecpmcenable; | |
3140 | brdp->reenable = stli_ecpmcenable; | |
3141 | brdp->disable = stli_ecpmcdisable; | |
3142 | brdp->getmemptr = stli_ecpmcgetmemptr; | |
3143 | brdp->intr = stli_ecpintr; | |
3144 | brdp->reset = stli_ecpmcreset; | |
3145 | name = "serial(EC8/64-MCA)"; | |
3146 | break; | |
3147 | ||
3148 | case BRD_ECPPCI: | |
1da177e4 LT |
3149 | brdp->memsize = ECP_PCIMEMSIZE; |
3150 | brdp->pagesize = ECP_PCIPAGESIZE; | |
3151 | brdp->init = stli_ecppciinit; | |
3152 | brdp->enable = NULL; | |
3153 | brdp->reenable = NULL; | |
3154 | brdp->disable = NULL; | |
3155 | brdp->getmemptr = stli_ecppcigetmemptr; | |
3156 | brdp->intr = stli_ecpintr; | |
3157 | brdp->reset = stli_ecppcireset; | |
3158 | name = "serial(EC/RA-PCI)"; | |
3159 | break; | |
3160 | ||
3161 | default: | |
8f8f5a58 JS |
3162 | retval = -EINVAL; |
3163 | goto err_reg; | |
1da177e4 LT |
3164 | } |
3165 | ||
3166 | /* | |
3167 | * The per-board operations structure is all set up, so now let's go | |
3168 | * and get the board operational. Firstly initialize board configuration | |
3169 | * registers. Set the memory mapping info so we can get at the boards | |
3170 | * shared memory. | |
3171 | */ | |
3172 | EBRDINIT(brdp); | |
3173 | ||
24cb2335 | 3174 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
8f8f5a58 JS |
3175 | if (brdp->membase == NULL) { |
3176 | retval = -ENOMEM; | |
3177 | goto err_reg; | |
1da177e4 LT |
3178 | } |
3179 | ||
3180 | /* | |
3181 | * Now that all specific code is set up, enable the shared memory and | |
3182 | * look for the a signature area that will tell us exactly what board | |
3183 | * this is, and what it is connected to it. | |
3184 | */ | |
3185 | EBRDENABLE(brdp); | |
4ac4360b | 3186 | sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
634965f5 | 3187 | memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); |
1da177e4 LT |
3188 | EBRDDISABLE(brdp); |
3189 | ||
8f8f5a58 JS |
3190 | if (sig.magic != cpu_to_le32(ECP_MAGIC)) { |
3191 | retval = -ENODEV; | |
3192 | goto err_unmap; | |
1da177e4 LT |
3193 | } |
3194 | ||
3195 | /* | |
3196 | * Scan through the signature looking at the panels connected to the | |
3197 | * board. Calculate the total number of ports as we go. | |
3198 | */ | |
3199 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { | |
3200 | status = sig.panelid[nxtid]; | |
3201 | if ((status & ECH_PNLIDMASK) != nxtid) | |
3202 | break; | |
3203 | ||
3204 | brdp->panelids[panelnr] = status; | |
3205 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; | |
3206 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) | |
3207 | nxtid++; | |
3208 | brdp->panels[panelnr] = nrports; | |
3209 | brdp->nrports += nrports; | |
3210 | nxtid++; | |
3211 | brdp->nrpanels++; | |
3212 | } | |
3213 | ||
3214 | ||
3215 | brdp->state |= BST_FOUND; | |
4ac4360b | 3216 | return 0; |
8f8f5a58 JS |
3217 | err_unmap: |
3218 | iounmap(brdp->membase); | |
3219 | brdp->membase = NULL; | |
3220 | err_reg: | |
3221 | release_region(brdp->iobase, brdp->iosize); | |
3222 | err: | |
3223 | return retval; | |
1da177e4 LT |
3224 | } |
3225 | ||
3226 | /*****************************************************************************/ | |
3227 | ||
3228 | /* | |
3229 | * Try to find an ONboard, Brumby or Stallion board and initialize it. | |
3230 | * This handles only these board types. | |
3231 | */ | |
3232 | ||
1f8ec435 | 3233 | static int stli_initonb(struct stlibrd *brdp) |
1da177e4 | 3234 | { |
4ac4360b AC |
3235 | cdkonbsig_t sig; |
3236 | cdkonbsig_t __iomem *sigsp; | |
3237 | char *name; | |
8f8f5a58 | 3238 | int i, retval; |
1da177e4 LT |
3239 | |
3240 | /* | |
3241 | * Do a basic sanity check on the IO and memory addresses. | |
3242 | */ | |
8f8f5a58 JS |
3243 | if (brdp->iobase == 0 || brdp->memaddr == 0) { |
3244 | retval = -ENODEV; | |
3245 | goto err; | |
3246 | } | |
1da177e4 LT |
3247 | |
3248 | brdp->iosize = ONB_IOSIZE; | |
3249 | ||
8f8f5a58 JS |
3250 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3251 | retval = -EIO; | |
3252 | goto err; | |
3253 | } | |
1da177e4 LT |
3254 | |
3255 | /* | |
3256 | * Based on the specific board type setup the common vars to access | |
3257 | * and enable shared memory. Set all board specific information now | |
3258 | * as well. | |
3259 | */ | |
3260 | switch (brdp->brdtype) { | |
3261 | case BRD_ONBOARD: | |
1da177e4 | 3262 | case BRD_ONBOARD2: |
1da177e4 LT |
3263 | brdp->memsize = ONB_MEMSIZE; |
3264 | brdp->pagesize = ONB_ATPAGESIZE; | |
3265 | brdp->init = stli_onbinit; | |
3266 | brdp->enable = stli_onbenable; | |
3267 | brdp->reenable = stli_onbenable; | |
3268 | brdp->disable = stli_onbdisable; | |
3269 | brdp->getmemptr = stli_onbgetmemptr; | |
3270 | brdp->intr = stli_ecpintr; | |
3271 | brdp->reset = stli_onbreset; | |
3272 | if (brdp->memaddr > 0x100000) | |
3273 | brdp->enabval = ONB_MEMENABHI; | |
3274 | else | |
3275 | brdp->enabval = ONB_MEMENABLO; | |
3276 | name = "serial(ONBoard)"; | |
3277 | break; | |
3278 | ||
3279 | case BRD_ONBOARDE: | |
1da177e4 LT |
3280 | brdp->memsize = ONB_EIMEMSIZE; |
3281 | brdp->pagesize = ONB_EIPAGESIZE; | |
3282 | brdp->init = stli_onbeinit; | |
3283 | brdp->enable = stli_onbeenable; | |
3284 | brdp->reenable = stli_onbeenable; | |
3285 | brdp->disable = stli_onbedisable; | |
3286 | brdp->getmemptr = stli_onbegetmemptr; | |
3287 | brdp->intr = stli_ecpintr; | |
3288 | brdp->reset = stli_onbereset; | |
3289 | name = "serial(ONBoard/E)"; | |
3290 | break; | |
3291 | ||
3292 | case BRD_BRUMBY4: | |
1da177e4 LT |
3293 | brdp->memsize = BBY_MEMSIZE; |
3294 | brdp->pagesize = BBY_PAGESIZE; | |
3295 | brdp->init = stli_bbyinit; | |
3296 | brdp->enable = NULL; | |
3297 | brdp->reenable = NULL; | |
3298 | brdp->disable = NULL; | |
3299 | brdp->getmemptr = stli_bbygetmemptr; | |
3300 | brdp->intr = stli_ecpintr; | |
3301 | brdp->reset = stli_bbyreset; | |
3302 | name = "serial(Brumby)"; | |
3303 | break; | |
3304 | ||
3305 | case BRD_STALLION: | |
1da177e4 LT |
3306 | brdp->memsize = STAL_MEMSIZE; |
3307 | brdp->pagesize = STAL_PAGESIZE; | |
3308 | brdp->init = stli_stalinit; | |
3309 | brdp->enable = NULL; | |
3310 | brdp->reenable = NULL; | |
3311 | brdp->disable = NULL; | |
3312 | brdp->getmemptr = stli_stalgetmemptr; | |
3313 | brdp->intr = stli_ecpintr; | |
3314 | brdp->reset = stli_stalreset; | |
3315 | name = "serial(Stallion)"; | |
3316 | break; | |
3317 | ||
3318 | default: | |
8f8f5a58 JS |
3319 | retval = -EINVAL; |
3320 | goto err_reg; | |
1da177e4 LT |
3321 | } |
3322 | ||
3323 | /* | |
3324 | * The per-board operations structure is all set up, so now let's go | |
3325 | * and get the board operational. Firstly initialize board configuration | |
3326 | * registers. Set the memory mapping info so we can get at the boards | |
3327 | * shared memory. | |
3328 | */ | |
3329 | EBRDINIT(brdp); | |
3330 | ||
24cb2335 | 3331 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
8f8f5a58 JS |
3332 | if (brdp->membase == NULL) { |
3333 | retval = -ENOMEM; | |
3334 | goto err_reg; | |
1da177e4 LT |
3335 | } |
3336 | ||
3337 | /* | |
3338 | * Now that all specific code is set up, enable the shared memory and | |
3339 | * look for the a signature area that will tell us exactly what board | |
3340 | * this is, and how many ports. | |
3341 | */ | |
3342 | EBRDENABLE(brdp); | |
4ac4360b AC |
3343 | sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
3344 | memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); | |
1da177e4 LT |
3345 | EBRDDISABLE(brdp); |
3346 | ||
4ac4360b AC |
3347 | if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || |
3348 | sig.magic1 != cpu_to_le16(ONB_MAGIC1) || | |
3349 | sig.magic2 != cpu_to_le16(ONB_MAGIC2) || | |
8f8f5a58 JS |
3350 | sig.magic3 != cpu_to_le16(ONB_MAGIC3)) { |
3351 | retval = -ENODEV; | |
3352 | goto err_unmap; | |
1da177e4 LT |
3353 | } |
3354 | ||
3355 | /* | |
3356 | * Scan through the signature alive mask and calculate how many ports | |
3357 | * there are on this board. | |
3358 | */ | |
3359 | brdp->nrpanels = 1; | |
3360 | if (sig.amask1) { | |
3361 | brdp->nrports = 32; | |
3362 | } else { | |
3363 | for (i = 0; (i < 16); i++) { | |
3364 | if (((sig.amask0 << i) & 0x8000) == 0) | |
3365 | break; | |
3366 | } | |
3367 | brdp->nrports = i; | |
3368 | } | |
3369 | brdp->panels[0] = brdp->nrports; | |
3370 | ||
3371 | ||
3372 | brdp->state |= BST_FOUND; | |
4ac4360b | 3373 | return 0; |
8f8f5a58 JS |
3374 | err_unmap: |
3375 | iounmap(brdp->membase); | |
3376 | brdp->membase = NULL; | |
3377 | err_reg: | |
3378 | release_region(brdp->iobase, brdp->iosize); | |
3379 | err: | |
3380 | return retval; | |
1da177e4 LT |
3381 | } |
3382 | ||
3383 | /*****************************************************************************/ | |
3384 | ||
3385 | /* | |
3386 | * Start up a running board. This routine is only called after the | |
3387 | * code has been down loaded to the board and is operational. It will | |
3388 | * read in the memory map, and get the show on the road... | |
3389 | */ | |
3390 | ||
1f8ec435 | 3391 | static int stli_startbrd(struct stlibrd *brdp) |
1da177e4 | 3392 | { |
4ac4360b AC |
3393 | cdkhdr_t __iomem *hdrp; |
3394 | cdkmem_t __iomem *memp; | |
3395 | cdkasy_t __iomem *ap; | |
3396 | unsigned long flags; | |
1328d737 | 3397 | unsigned int portnr, nrdevs, i; |
1f8ec435 | 3398 | struct stliport *portp; |
1328d737 | 3399 | int rc = 0; |
4ac4360b AC |
3400 | u32 memoff; |
3401 | ||
3402 | spin_lock_irqsave(&brd_lock, flags); | |
1da177e4 | 3403 | EBRDENABLE(brdp); |
4ac4360b | 3404 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1da177e4 LT |
3405 | nrdevs = hdrp->nrdevs; |
3406 | ||
3407 | #if 0 | |
3408 | printk("%s(%d): CDK version %d.%d.%d --> " | |
3409 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", | |
4ac4360b AC |
3410 | __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), |
3411 | readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), | |
3412 | readl(&hdrp->slavep)); | |
1da177e4 LT |
3413 | #endif |
3414 | ||
3415 | if (nrdevs < (brdp->nrports + 1)) { | |
a6614999 | 3416 | printk(KERN_ERR "istallion: slave failed to allocate memory for " |
1da177e4 LT |
3417 | "all devices, devices=%d\n", nrdevs); |
3418 | brdp->nrports = nrdevs - 1; | |
3419 | } | |
3420 | brdp->nrdevs = nrdevs; | |
3421 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; | |
3422 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; | |
3423 | brdp->bitsize = (nrdevs + 7) / 8; | |
4ac4360b AC |
3424 | memoff = readl(&hdrp->memp); |
3425 | if (memoff > brdp->memsize) { | |
a6614999 | 3426 | printk(KERN_ERR "istallion: corrupted shared memory region?\n"); |
1da177e4 LT |
3427 | rc = -EIO; |
3428 | goto stli_donestartup; | |
3429 | } | |
4ac4360b AC |
3430 | memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); |
3431 | if (readw(&memp->dtype) != TYP_ASYNCTRL) { | |
a6614999 | 3432 | printk(KERN_ERR "istallion: no slave control device found\n"); |
1da177e4 LT |
3433 | goto stli_donestartup; |
3434 | } | |
3435 | memp++; | |
3436 | ||
3437 | /* | |
3438 | * Cycle through memory allocation of each port. We are guaranteed to | |
3439 | * have all ports inside the first page of slave window, so no need to | |
3440 | * change pages while reading memory map. | |
3441 | */ | |
3442 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { | |
4ac4360b | 3443 | if (readw(&memp->dtype) != TYP_ASYNC) |
1da177e4 LT |
3444 | break; |
3445 | portp = brdp->ports[portnr]; | |
4ac4360b | 3446 | if (portp == NULL) |
1da177e4 LT |
3447 | break; |
3448 | portp->devnr = i; | |
4ac4360b | 3449 | portp->addr = readl(&memp->offset); |
1da177e4 LT |
3450 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); |
3451 | portp->portidx = (unsigned char) (i / 8); | |
3452 | portp->portbit = (unsigned char) (0x1 << (i % 8)); | |
3453 | } | |
3454 | ||
4ac4360b | 3455 | writeb(0xff, &hdrp->slavereq); |
1da177e4 LT |
3456 | |
3457 | /* | |
3458 | * For each port setup a local copy of the RX and TX buffer offsets | |
3459 | * and sizes. We do this separate from the above, because we need to | |
3460 | * move the shared memory page... | |
3461 | */ | |
3462 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { | |
3463 | portp = brdp->ports[portnr]; | |
4ac4360b | 3464 | if (portp == NULL) |
1da177e4 LT |
3465 | break; |
3466 | if (portp->addr == 0) | |
3467 | break; | |
4ac4360b AC |
3468 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
3469 | if (ap != NULL) { | |
3470 | portp->rxsize = readw(&ap->rxq.size); | |
3471 | portp->txsize = readw(&ap->txq.size); | |
3472 | portp->rxoffset = readl(&ap->rxq.offset); | |
3473 | portp->txoffset = readl(&ap->txq.offset); | |
1da177e4 LT |
3474 | } |
3475 | } | |
3476 | ||
3477 | stli_donestartup: | |
3478 | EBRDDISABLE(brdp); | |
4ac4360b | 3479 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
3480 | |
3481 | if (rc == 0) | |
3482 | brdp->state |= BST_STARTED; | |
3483 | ||
3484 | if (! stli_timeron) { | |
3485 | stli_timeron++; | |
ff8efe97 | 3486 | mod_timer(&stli_timerlist, STLI_TIMEOUT); |
1da177e4 LT |
3487 | } |
3488 | ||
4ac4360b | 3489 | return rc; |
1da177e4 LT |
3490 | } |
3491 | ||
3492 | /*****************************************************************************/ | |
3493 | ||
3494 | /* | |
3495 | * Probe and initialize the specified board. | |
3496 | */ | |
3497 | ||
1f8ec435 | 3498 | static int __devinit stli_brdinit(struct stlibrd *brdp) |
1da177e4 | 3499 | { |
8f8f5a58 JS |
3500 | int retval; |
3501 | ||
1da177e4 LT |
3502 | switch (brdp->brdtype) { |
3503 | case BRD_ECP: | |
3504 | case BRD_ECPE: | |
3505 | case BRD_ECPMC: | |
3506 | case BRD_ECPPCI: | |
8f8f5a58 | 3507 | retval = stli_initecp(brdp); |
1da177e4 LT |
3508 | break; |
3509 | case BRD_ONBOARD: | |
3510 | case BRD_ONBOARDE: | |
3511 | case BRD_ONBOARD2: | |
1da177e4 | 3512 | case BRD_BRUMBY4: |
1da177e4 | 3513 | case BRD_STALLION: |
8f8f5a58 | 3514 | retval = stli_initonb(brdp); |
1da177e4 | 3515 | break; |
1da177e4 | 3516 | default: |
a6614999 | 3517 | printk(KERN_ERR "istallion: board=%d is unknown board " |
1da177e4 | 3518 | "type=%d\n", brdp->brdnr, brdp->brdtype); |
8f8f5a58 | 3519 | retval = -ENODEV; |
1da177e4 LT |
3520 | } |
3521 | ||
8f8f5a58 JS |
3522 | if (retval) |
3523 | return retval; | |
1da177e4 LT |
3524 | |
3525 | stli_initports(brdp); | |
a6614999 | 3526 | printk(KERN_INFO "istallion: %s found, board=%d io=%x mem=%x " |
1da177e4 LT |
3527 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], |
3528 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, | |
3529 | brdp->nrpanels, brdp->nrports); | |
4ac4360b | 3530 | return 0; |
1da177e4 LT |
3531 | } |
3532 | ||
a00f33f3 | 3533 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3534 | /*****************************************************************************/ |
3535 | ||
3536 | /* | |
3537 | * Probe around trying to find where the EISA boards shared memory | |
3538 | * might be. This is a bit if hack, but it is the best we can do. | |
3539 | */ | |
3540 | ||
1f8ec435 | 3541 | static int stli_eisamemprobe(struct stlibrd *brdp) |
1da177e4 | 3542 | { |
4ac4360b AC |
3543 | cdkecpsig_t ecpsig, __iomem *ecpsigp; |
3544 | cdkonbsig_t onbsig, __iomem *onbsigp; | |
1da177e4 LT |
3545 | int i, foundit; |
3546 | ||
1da177e4 LT |
3547 | /* |
3548 | * First up we reset the board, to get it into a known state. There | |
3549 | * is only 2 board types here we need to worry about. Don;t use the | |
3550 | * standard board init routine here, it programs up the shared | |
3551 | * memory address, and we don't know it yet... | |
3552 | */ | |
3553 | if (brdp->brdtype == BRD_ECPE) { | |
3554 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
3555 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3556 | udelay(10); | |
3557 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3558 | udelay(500); | |
3559 | stli_ecpeienable(brdp); | |
3560 | } else if (brdp->brdtype == BRD_ONBOARDE) { | |
3561 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
3562 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3563 | udelay(10); | |
3564 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3565 | mdelay(100); | |
3566 | outb(0x1, brdp->iobase); | |
3567 | mdelay(1); | |
3568 | stli_onbeenable(brdp); | |
3569 | } else { | |
4ac4360b | 3570 | return -ENODEV; |
1da177e4 LT |
3571 | } |
3572 | ||
3573 | foundit = 0; | |
3574 | brdp->memsize = ECP_MEMSIZE; | |
3575 | ||
3576 | /* | |
3577 | * Board shared memory is enabled, so now we have a poke around and | |
3578 | * see if we can find it. | |
3579 | */ | |
3580 | for (i = 0; (i < stli_eisamempsize); i++) { | |
3581 | brdp->memaddr = stli_eisamemprobeaddrs[i]; | |
24cb2335 | 3582 | brdp->membase = ioremap_nocache(brdp->memaddr, brdp->memsize); |
4ac4360b | 3583 | if (brdp->membase == NULL) |
1da177e4 LT |
3584 | continue; |
3585 | ||
3586 | if (brdp->brdtype == BRD_ECPE) { | |
29756fa3 | 3587 | ecpsigp = stli_ecpeigetmemptr(brdp, |
1da177e4 | 3588 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3589 | memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); |
3590 | if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) | |
1da177e4 LT |
3591 | foundit = 1; |
3592 | } else { | |
4ac4360b | 3593 | onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, |
1da177e4 | 3594 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3595 | memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); |
3596 | if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && | |
3597 | (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && | |
3598 | (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && | |
3599 | (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) | |
1da177e4 LT |
3600 | foundit = 1; |
3601 | } | |
3602 | ||
3603 | iounmap(brdp->membase); | |
3604 | if (foundit) | |
3605 | break; | |
3606 | } | |
3607 | ||
3608 | /* | |
3609 | * Regardless of whether we found the shared memory or not we must | |
3610 | * disable the region. After that return success or failure. | |
3611 | */ | |
3612 | if (brdp->brdtype == BRD_ECPE) | |
3613 | stli_ecpeidisable(brdp); | |
3614 | else | |
3615 | stli_onbedisable(brdp); | |
3616 | ||
3617 | if (! foundit) { | |
3618 | brdp->memaddr = 0; | |
3619 | brdp->membase = NULL; | |
a6614999 | 3620 | printk(KERN_ERR "istallion: failed to probe shared memory " |
1da177e4 LT |
3621 | "region for %s in EISA slot=%d\n", |
3622 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); | |
4ac4360b | 3623 | return -ENODEV; |
1da177e4 | 3624 | } |
4ac4360b | 3625 | return 0; |
1da177e4 | 3626 | } |
a00f33f3 | 3627 | #endif |
1da177e4 LT |
3628 | |
3629 | static int stli_getbrdnr(void) | |
3630 | { | |
1328d737 | 3631 | unsigned int i; |
1da177e4 LT |
3632 | |
3633 | for (i = 0; i < STL_MAXBRDS; i++) { | |
3634 | if (!stli_brds[i]) { | |
3635 | if (i >= stli_nrbrds) | |
3636 | stli_nrbrds = i + 1; | |
3637 | return i; | |
3638 | } | |
3639 | } | |
3640 | return -1; | |
3641 | } | |
3642 | ||
a00f33f3 | 3643 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3644 | /*****************************************************************************/ |
3645 | ||
3646 | /* | |
3647 | * Probe around and try to find any EISA boards in system. The biggest | |
3648 | * problem here is finding out what memory address is associated with | |
3649 | * an EISA board after it is found. The registers of the ECPE and | |
3650 | * ONboardE are not readable - so we can't read them from there. We | |
3651 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't | |
3652 | * actually have any way to find out the real value. The best we can | |
3653 | * do is go probing around in the usual places hoping we can find it. | |
3654 | */ | |
3655 | ||
6005e3eb | 3656 | static int __init stli_findeisabrds(void) |
1da177e4 | 3657 | { |
1f8ec435 | 3658 | struct stlibrd *brdp; |
1328d737 | 3659 | unsigned int iobase, eid, i; |
8f8f5a58 | 3660 | int brdnr, found = 0; |
1da177e4 LT |
3661 | |
3662 | /* | |
4ac4360b | 3663 | * Firstly check if this is an EISA system. If this is not an EISA system then |
1da177e4 LT |
3664 | * don't bother going any further! |
3665 | */ | |
4ac4360b AC |
3666 | if (EISA_bus) |
3667 | return 0; | |
1da177e4 LT |
3668 | |
3669 | /* | |
3670 | * Looks like an EISA system, so go searching for EISA boards. | |
3671 | */ | |
3672 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { | |
3673 | outb(0xff, (iobase + 0xc80)); | |
3674 | eid = inb(iobase + 0xc80); | |
3675 | eid |= inb(iobase + 0xc81) << 8; | |
3676 | if (eid != STL_EISAID) | |
3677 | continue; | |
3678 | ||
3679 | /* | |
3680 | * We have found a board. Need to check if this board was | |
3681 | * statically configured already (just in case!). | |
3682 | */ | |
3683 | for (i = 0; (i < STL_MAXBRDS); i++) { | |
3684 | brdp = stli_brds[i]; | |
4ac4360b | 3685 | if (brdp == NULL) |
1da177e4 LT |
3686 | continue; |
3687 | if (brdp->iobase == iobase) | |
3688 | break; | |
3689 | } | |
3690 | if (i < STL_MAXBRDS) | |
3691 | continue; | |
3692 | ||
3693 | /* | |
3694 | * We have found a Stallion board and it is not configured already. | |
3695 | * Allocate a board structure and initialize it. | |
3696 | */ | |
4ac4360b | 3697 | if ((brdp = stli_allocbrd()) == NULL) |
8f8f5a58 | 3698 | return found ? : -ENOMEM; |
1328d737 JS |
3699 | brdnr = stli_getbrdnr(); |
3700 | if (brdnr < 0) | |
8f8f5a58 | 3701 | return found ? : -ENOMEM; |
1328d737 | 3702 | brdp->brdnr = (unsigned int)brdnr; |
1da177e4 LT |
3703 | eid = inb(iobase + 0xc82); |
3704 | if (eid == ECP_EISAID) | |
3705 | brdp->brdtype = BRD_ECPE; | |
3706 | else if (eid == ONB_EISAID) | |
3707 | brdp->brdtype = BRD_ONBOARDE; | |
3708 | else | |
3709 | brdp->brdtype = BRD_UNKNOWN; | |
3710 | brdp->iobase = iobase; | |
3711 | outb(0x1, (iobase + 0xc84)); | |
3712 | if (stli_eisamemprobe(brdp)) | |
3713 | outb(0, (iobase + 0xc84)); | |
8f8f5a58 JS |
3714 | if (stli_brdinit(brdp) < 0) { |
3715 | kfree(brdp); | |
3716 | continue; | |
3717 | } | |
3718 | ||
b103b5cf | 3719 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3720 | found++; |
ec3dde57 JS |
3721 | |
3722 | for (i = 0; i < brdp->nrports; i++) | |
3723 | tty_register_device(stli_serial, | |
3724 | brdp->brdnr * STL_MAXPORTS + i, NULL); | |
1da177e4 LT |
3725 | } |
3726 | ||
8f8f5a58 | 3727 | return found; |
1da177e4 | 3728 | } |
a00f33f3 JS |
3729 | #else |
3730 | static inline int stli_findeisabrds(void) { return 0; } | |
3731 | #endif | |
1da177e4 LT |
3732 | |
3733 | /*****************************************************************************/ | |
3734 | ||
3735 | /* | |
3736 | * Find the next available board number that is free. | |
3737 | */ | |
3738 | ||
3739 | /*****************************************************************************/ | |
3740 | ||
1da177e4 LT |
3741 | /* |
3742 | * We have a Stallion board. Allocate a board structure and | |
3743 | * initialize it. Read its IO and MEMORY resources from PCI | |
3744 | * configuration space. | |
3745 | */ | |
3746 | ||
845bead4 JS |
3747 | static int __devinit stli_pciprobe(struct pci_dev *pdev, |
3748 | const struct pci_device_id *ent) | |
1da177e4 | 3749 | { |
1f8ec435 | 3750 | struct stlibrd *brdp; |
ec3dde57 | 3751 | unsigned int i; |
1328d737 | 3752 | int brdnr, retval = -EIO; |
845bead4 JS |
3753 | |
3754 | retval = pci_enable_device(pdev); | |
3755 | if (retval) | |
3756 | goto err; | |
3757 | brdp = stli_allocbrd(); | |
3758 | if (brdp == NULL) { | |
3759 | retval = -ENOMEM; | |
3760 | goto err; | |
3761 | } | |
b103b5cf | 3762 | mutex_lock(&stli_brdslock); |
1328d737 | 3763 | brdnr = stli_getbrdnr(); |
b103b5cf | 3764 | if (brdnr < 0) { |
a6614999 | 3765 | printk(KERN_INFO "istallion: too many boards found, " |
1da177e4 | 3766 | "maximum supported %d\n", STL_MAXBRDS); |
b103b5cf | 3767 | mutex_unlock(&stli_brdslock); |
845bead4 JS |
3768 | retval = -EIO; |
3769 | goto err_fr; | |
1da177e4 | 3770 | } |
1328d737 | 3771 | brdp->brdnr = (unsigned int)brdnr; |
b103b5cf JS |
3772 | stli_brds[brdp->brdnr] = brdp; |
3773 | mutex_unlock(&stli_brdslock); | |
845bead4 | 3774 | brdp->brdtype = BRD_ECPPCI; |
1da177e4 LT |
3775 | /* |
3776 | * We have all resources from the board, so lets setup the actual | |
3777 | * board structure now. | |
3778 | */ | |
845bead4 JS |
3779 | brdp->iobase = pci_resource_start(pdev, 3); |
3780 | brdp->memaddr = pci_resource_start(pdev, 2); | |
3781 | retval = stli_brdinit(brdp); | |
3782 | if (retval) | |
b103b5cf | 3783 | goto err_null; |
845bead4 | 3784 | |
39014172 | 3785 | brdp->state |= BST_PROBED; |
845bead4 | 3786 | pci_set_drvdata(pdev, brdp); |
1da177e4 | 3787 | |
140e92ab JS |
3788 | EBRDENABLE(brdp); |
3789 | brdp->enable = NULL; | |
3790 | brdp->disable = NULL; | |
3791 | ||
ec3dde57 JS |
3792 | for (i = 0; i < brdp->nrports; i++) |
3793 | tty_register_device(stli_serial, brdp->brdnr * STL_MAXPORTS + i, | |
3794 | &pdev->dev); | |
3795 | ||
4ac4360b | 3796 | return 0; |
b103b5cf JS |
3797 | err_null: |
3798 | stli_brds[brdp->brdnr] = NULL; | |
845bead4 JS |
3799 | err_fr: |
3800 | kfree(brdp); | |
3801 | err: | |
3802 | return retval; | |
1da177e4 LT |
3803 | } |
3804 | ||
845bead4 JS |
3805 | static void stli_pciremove(struct pci_dev *pdev) |
3806 | { | |
1f8ec435 | 3807 | struct stlibrd *brdp = pci_get_drvdata(pdev); |
1da177e4 | 3808 | |
845bead4 | 3809 | stli_cleanup_ports(brdp); |
1da177e4 | 3810 | |
845bead4 JS |
3811 | iounmap(brdp->membase); |
3812 | if (brdp->iosize > 0) | |
3813 | release_region(brdp->iobase, brdp->iosize); | |
1da177e4 | 3814 | |
845bead4 JS |
3815 | stli_brds[brdp->brdnr] = NULL; |
3816 | kfree(brdp); | |
1da177e4 LT |
3817 | } |
3818 | ||
845bead4 JS |
3819 | static struct pci_driver stli_pcidriver = { |
3820 | .name = "istallion", | |
3821 | .id_table = istallion_pci_tbl, | |
3822 | .probe = stli_pciprobe, | |
3823 | .remove = __devexit_p(stli_pciremove) | |
3824 | }; | |
1da177e4 LT |
3825 | /*****************************************************************************/ |
3826 | ||
3827 | /* | |
3828 | * Allocate a new board structure. Fill out the basic info in it. | |
3829 | */ | |
3830 | ||
1f8ec435 | 3831 | static struct stlibrd *stli_allocbrd(void) |
1da177e4 | 3832 | { |
1f8ec435 | 3833 | struct stlibrd *brdp; |
1da177e4 | 3834 | |
1f8ec435 | 3835 | brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL); |
b0b4ed72 | 3836 | if (!brdp) { |
a6614999 | 3837 | printk(KERN_ERR "istallion: failed to allocate memory " |
1f8ec435 | 3838 | "(size=%Zd)\n", sizeof(struct stlibrd)); |
b0b4ed72 | 3839 | return NULL; |
1da177e4 | 3840 | } |
1da177e4 | 3841 | brdp->magic = STLI_BOARDMAGIC; |
4ac4360b | 3842 | return brdp; |
1da177e4 LT |
3843 | } |
3844 | ||
3845 | /*****************************************************************************/ | |
3846 | ||
3847 | /* | |
3848 | * Scan through all the boards in the configuration and see what we | |
3849 | * can find. | |
3850 | */ | |
3851 | ||
6005e3eb | 3852 | static int __init stli_initbrds(void) |
1da177e4 | 3853 | { |
1f8ec435 JS |
3854 | struct stlibrd *brdp, *nxtbrdp; |
3855 | struct stlconf conf; | |
8f8f5a58 | 3856 | unsigned int i, j, found = 0; |
1328d737 | 3857 | int retval; |
1da177e4 | 3858 | |
a3f8d9d5 JS |
3859 | for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp); |
3860 | stli_nrbrds++) { | |
3861 | memset(&conf, 0, sizeof(conf)); | |
3862 | if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0) | |
3863 | continue; | |
4ac4360b | 3864 | if ((brdp = stli_allocbrd()) == NULL) |
a3f8d9d5 JS |
3865 | continue; |
3866 | brdp->brdnr = stli_nrbrds; | |
3867 | brdp->brdtype = conf.brdtype; | |
3868 | brdp->iobase = conf.ioaddr1; | |
3869 | brdp->memaddr = conf.memaddr; | |
8f8f5a58 JS |
3870 | if (stli_brdinit(brdp) < 0) { |
3871 | kfree(brdp); | |
3872 | continue; | |
3873 | } | |
b103b5cf | 3874 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3875 | found++; |
ec3dde57 JS |
3876 | |
3877 | for (i = 0; i < brdp->nrports; i++) | |
3878 | tty_register_device(stli_serial, | |
3879 | brdp->brdnr * STL_MAXPORTS + i, NULL); | |
1da177e4 LT |
3880 | } |
3881 | ||
8f8f5a58 JS |
3882 | retval = stli_findeisabrds(); |
3883 | if (retval > 0) | |
3884 | found += retval; | |
845bead4 | 3885 | |
1da177e4 LT |
3886 | /* |
3887 | * All found boards are initialized. Now for a little optimization, if | |
3888 | * no boards are sharing the "shared memory" regions then we can just | |
3889 | * leave them all enabled. This is in fact the usual case. | |
3890 | */ | |
3891 | stli_shared = 0; | |
3892 | if (stli_nrbrds > 1) { | |
3893 | for (i = 0; (i < stli_nrbrds); i++) { | |
3894 | brdp = stli_brds[i]; | |
4ac4360b | 3895 | if (brdp == NULL) |
1da177e4 LT |
3896 | continue; |
3897 | for (j = i + 1; (j < stli_nrbrds); j++) { | |
3898 | nxtbrdp = stli_brds[j]; | |
4ac4360b | 3899 | if (nxtbrdp == NULL) |
1da177e4 LT |
3900 | continue; |
3901 | if ((brdp->membase >= nxtbrdp->membase) && | |
3902 | (brdp->membase <= (nxtbrdp->membase + | |
3903 | nxtbrdp->memsize - 1))) { | |
3904 | stli_shared++; | |
3905 | break; | |
3906 | } | |
3907 | } | |
3908 | } | |
3909 | } | |
3910 | ||
3911 | if (stli_shared == 0) { | |
3912 | for (i = 0; (i < stli_nrbrds); i++) { | |
3913 | brdp = stli_brds[i]; | |
4ac4360b | 3914 | if (brdp == NULL) |
1da177e4 LT |
3915 | continue; |
3916 | if (brdp->state & BST_FOUND) { | |
3917 | EBRDENABLE(brdp); | |
3918 | brdp->enable = NULL; | |
3919 | brdp->disable = NULL; | |
3920 | } | |
3921 | } | |
3922 | } | |
3923 | ||
140e92ab JS |
3924 | retval = pci_register_driver(&stli_pcidriver); |
3925 | if (retval && found == 0) { | |
3926 | printk(KERN_ERR "Neither isa nor eisa cards found nor pci " | |
3927 | "driver can be registered!\n"); | |
3928 | goto err; | |
3929 | } | |
3930 | ||
4ac4360b | 3931 | return 0; |
8f8f5a58 JS |
3932 | err: |
3933 | return retval; | |
1da177e4 LT |
3934 | } |
3935 | ||
3936 | /*****************************************************************************/ | |
3937 | ||
3938 | /* | |
3939 | * Code to handle an "staliomem" read operation. This device is the | |
3940 | * contents of the board shared memory. It is used for down loading | |
3941 | * the slave image (and debugging :-) | |
3942 | */ | |
3943 | ||
3944 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) | |
3945 | { | |
4ac4360b | 3946 | unsigned long flags; |
29756fa3 | 3947 | void __iomem *memptr; |
1f8ec435 | 3948 | struct stlibrd *brdp; |
1328d737 JS |
3949 | unsigned int brdnr; |
3950 | int size, n; | |
4ac4360b AC |
3951 | void *p; |
3952 | loff_t off = *offp; | |
1da177e4 | 3953 | |
a7113a96 | 3954 | brdnr = iminor(fp->f_path.dentry->d_inode); |
1da177e4 | 3955 | if (brdnr >= stli_nrbrds) |
4ac4360b | 3956 | return -ENODEV; |
1da177e4 | 3957 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
3958 | if (brdp == NULL) |
3959 | return -ENODEV; | |
1da177e4 | 3960 | if (brdp->state == 0) |
4ac4360b AC |
3961 | return -ENODEV; |
3962 | if (off >= brdp->memsize || off + count < off) | |
3963 | return 0; | |
1da177e4 | 3964 | |
a3f8d9d5 | 3965 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
3966 | |
3967 | /* | |
3968 | * Copy the data a page at a time | |
3969 | */ | |
3970 | ||
3971 | p = (void *)__get_free_page(GFP_KERNEL); | |
3972 | if(p == NULL) | |
3973 | return -ENOMEM; | |
1da177e4 | 3974 | |
1da177e4 | 3975 | while (size > 0) { |
4ac4360b AC |
3976 | spin_lock_irqsave(&brd_lock, flags); |
3977 | EBRDENABLE(brdp); | |
29756fa3 | 3978 | memptr = EBRDGETMEMPTR(brdp, off); |
a3f8d9d5 JS |
3979 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
3980 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
3981 | memcpy_fromio(p, memptr, n); |
3982 | EBRDDISABLE(brdp); | |
3983 | spin_unlock_irqrestore(&brd_lock, flags); | |
3984 | if (copy_to_user(buf, p, n)) { | |
1da177e4 LT |
3985 | count = -EFAULT; |
3986 | goto out; | |
3987 | } | |
4ac4360b | 3988 | off += n; |
1da177e4 LT |
3989 | buf += n; |
3990 | size -= n; | |
3991 | } | |
3992 | out: | |
4ac4360b AC |
3993 | *offp = off; |
3994 | free_page((unsigned long)p); | |
3995 | return count; | |
1da177e4 LT |
3996 | } |
3997 | ||
3998 | /*****************************************************************************/ | |
3999 | ||
4000 | /* | |
4001 | * Code to handle an "staliomem" write operation. This device is the | |
4002 | * contents of the board shared memory. It is used for down loading | |
4003 | * the slave image (and debugging :-) | |
4ac4360b AC |
4004 | * |
4005 | * FIXME: copy under lock | |
1da177e4 LT |
4006 | */ |
4007 | ||
4008 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) | |
4009 | { | |
4ac4360b | 4010 | unsigned long flags; |
29756fa3 | 4011 | void __iomem *memptr; |
1f8ec435 | 4012 | struct stlibrd *brdp; |
4ac4360b | 4013 | char __user *chbuf; |
1328d737 JS |
4014 | unsigned int brdnr; |
4015 | int size, n; | |
4ac4360b AC |
4016 | void *p; |
4017 | loff_t off = *offp; | |
1da177e4 | 4018 | |
a7113a96 | 4019 | brdnr = iminor(fp->f_path.dentry->d_inode); |
4ac4360b | 4020 | |
1da177e4 | 4021 | if (brdnr >= stli_nrbrds) |
4ac4360b | 4022 | return -ENODEV; |
1da177e4 | 4023 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4024 | if (brdp == NULL) |
4025 | return -ENODEV; | |
1da177e4 | 4026 | if (brdp->state == 0) |
4ac4360b AC |
4027 | return -ENODEV; |
4028 | if (off >= brdp->memsize || off + count < off) | |
4029 | return 0; | |
1da177e4 LT |
4030 | |
4031 | chbuf = (char __user *) buf; | |
a3f8d9d5 | 4032 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
4033 | |
4034 | /* | |
4035 | * Copy the data a page at a time | |
4036 | */ | |
4037 | ||
4038 | p = (void *)__get_free_page(GFP_KERNEL); | |
4039 | if(p == NULL) | |
4040 | return -ENOMEM; | |
1da177e4 | 4041 | |
1da177e4 | 4042 | while (size > 0) { |
a3f8d9d5 JS |
4043 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
4044 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
4045 | if (copy_from_user(p, chbuf, n)) { |
4046 | if (count == 0) | |
4047 | count = -EFAULT; | |
1da177e4 LT |
4048 | goto out; |
4049 | } | |
4ac4360b AC |
4050 | spin_lock_irqsave(&brd_lock, flags); |
4051 | EBRDENABLE(brdp); | |
29756fa3 | 4052 | memptr = EBRDGETMEMPTR(brdp, off); |
4ac4360b AC |
4053 | memcpy_toio(memptr, p, n); |
4054 | EBRDDISABLE(brdp); | |
4055 | spin_unlock_irqrestore(&brd_lock, flags); | |
4056 | off += n; | |
1da177e4 LT |
4057 | chbuf += n; |
4058 | size -= n; | |
4059 | } | |
4060 | out: | |
4ac4360b AC |
4061 | free_page((unsigned long) p); |
4062 | *offp = off; | |
4063 | return count; | |
1da177e4 LT |
4064 | } |
4065 | ||
4066 | /*****************************************************************************/ | |
4067 | ||
4068 | /* | |
4069 | * Return the board stats structure to user app. | |
4070 | */ | |
4071 | ||
4072 | static int stli_getbrdstats(combrd_t __user *bp) | |
4073 | { | |
1f8ec435 | 4074 | struct stlibrd *brdp; |
1328d737 | 4075 | unsigned int i; |
1da177e4 LT |
4076 | |
4077 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) | |
4078 | return -EFAULT; | |
4079 | if (stli_brdstats.brd >= STL_MAXBRDS) | |
4ac4360b | 4080 | return -ENODEV; |
1da177e4 | 4081 | brdp = stli_brds[stli_brdstats.brd]; |
4ac4360b AC |
4082 | if (brdp == NULL) |
4083 | return -ENODEV; | |
1da177e4 LT |
4084 | |
4085 | memset(&stli_brdstats, 0, sizeof(combrd_t)); | |
4086 | stli_brdstats.brd = brdp->brdnr; | |
4087 | stli_brdstats.type = brdp->brdtype; | |
4088 | stli_brdstats.hwid = 0; | |
4089 | stli_brdstats.state = brdp->state; | |
4090 | stli_brdstats.ioaddr = brdp->iobase; | |
4091 | stli_brdstats.memaddr = brdp->memaddr; | |
4092 | stli_brdstats.nrpanels = brdp->nrpanels; | |
4093 | stli_brdstats.nrports = brdp->nrports; | |
4094 | for (i = 0; (i < brdp->nrpanels); i++) { | |
4095 | stli_brdstats.panels[i].panel = i; | |
4096 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; | |
4097 | stli_brdstats.panels[i].nrports = brdp->panels[i]; | |
4098 | } | |
4099 | ||
4100 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) | |
4101 | return -EFAULT; | |
4ac4360b | 4102 | return 0; |
1da177e4 LT |
4103 | } |
4104 | ||
4105 | /*****************************************************************************/ | |
4106 | ||
4107 | /* | |
4108 | * Resolve the referenced port number into a port struct pointer. | |
4109 | */ | |
4110 | ||
1328d737 JS |
4111 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, |
4112 | unsigned int portnr) | |
1da177e4 | 4113 | { |
1f8ec435 | 4114 | struct stlibrd *brdp; |
1328d737 | 4115 | unsigned int i; |
1da177e4 | 4116 | |
1328d737 | 4117 | if (brdnr >= STL_MAXBRDS) |
4ac4360b | 4118 | return NULL; |
1da177e4 | 4119 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4120 | if (brdp == NULL) |
4121 | return NULL; | |
1da177e4 LT |
4122 | for (i = 0; (i < panelnr); i++) |
4123 | portnr += brdp->panels[i]; | |
1328d737 | 4124 | if (portnr >= brdp->nrports) |
4ac4360b AC |
4125 | return NULL; |
4126 | return brdp->ports[portnr]; | |
1da177e4 LT |
4127 | } |
4128 | ||
4129 | /*****************************************************************************/ | |
4130 | ||
4131 | /* | |
4132 | * Return the port stats structure to user app. A NULL port struct | |
4133 | * pointer passed in means that we need to find out from the app | |
4134 | * what port to get stats for (used through board control device). | |
4135 | */ | |
4136 | ||
d18a750f | 4137 | static int stli_portcmdstats(struct tty_struct *tty, struct stliport *portp) |
1da177e4 LT |
4138 | { |
4139 | unsigned long flags; | |
1f8ec435 | 4140 | struct stlibrd *brdp; |
1da177e4 LT |
4141 | int rc; |
4142 | ||
4143 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4144 | ||
4ac4360b AC |
4145 | if (portp == NULL) |
4146 | return -ENODEV; | |
1da177e4 | 4147 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
4148 | if (brdp == NULL) |
4149 | return -ENODEV; | |
1da177e4 LT |
4150 | |
4151 | if (brdp->state & BST_STARTED) { | |
4152 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, | |
4153 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) | |
4ac4360b | 4154 | return rc; |
1da177e4 LT |
4155 | } else { |
4156 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); | |
4157 | } | |
4158 | ||
4159 | stli_comstats.brd = portp->brdnr; | |
4160 | stli_comstats.panel = portp->panelnr; | |
4161 | stli_comstats.port = portp->portnr; | |
4162 | stli_comstats.state = portp->state; | |
42a77a1b | 4163 | stli_comstats.flags = portp->port.flags; |
1da177e4 | 4164 | |
4ac4360b | 4165 | spin_lock_irqsave(&brd_lock, flags); |
d18a750f AC |
4166 | if (tty != NULL) { |
4167 | if (portp->port.tty == tty) { | |
4168 | stli_comstats.ttystate = tty->flags; | |
4ac4360b | 4169 | stli_comstats.rxbuffered = -1; |
d18a750f AC |
4170 | if (tty->termios != NULL) { |
4171 | stli_comstats.cflags = tty->termios->c_cflag; | |
4172 | stli_comstats.iflags = tty->termios->c_iflag; | |
4173 | stli_comstats.oflags = tty->termios->c_oflag; | |
4174 | stli_comstats.lflags = tty->termios->c_lflag; | |
1da177e4 LT |
4175 | } |
4176 | } | |
4177 | } | |
4ac4360b | 4178 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
4179 | |
4180 | stli_comstats.txtotal = stli_cdkstats.txchars; | |
4181 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; | |
4182 | stli_comstats.txbuffered = stli_cdkstats.txringq; | |
4183 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; | |
4184 | stli_comstats.rxoverrun = stli_cdkstats.overruns; | |
4185 | stli_comstats.rxparity = stli_cdkstats.parity; | |
4186 | stli_comstats.rxframing = stli_cdkstats.framing; | |
4187 | stli_comstats.rxlost = stli_cdkstats.ringover; | |
4188 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; | |
4189 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; | |
4190 | stli_comstats.txxon = stli_cdkstats.txstart; | |
4191 | stli_comstats.txxoff = stli_cdkstats.txstop; | |
4192 | stli_comstats.rxxon = stli_cdkstats.rxstart; | |
4193 | stli_comstats.rxxoff = stli_cdkstats.rxstop; | |
4194 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; | |
4195 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; | |
4196 | stli_comstats.modem = stli_cdkstats.dcdcnt; | |
4197 | stli_comstats.hwid = stli_cdkstats.hwid; | |
4198 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); | |
4199 | ||
4ac4360b | 4200 | return 0; |
1da177e4 LT |
4201 | } |
4202 | ||
4203 | /*****************************************************************************/ | |
4204 | ||
4205 | /* | |
4206 | * Return the port stats structure to user app. A NULL port struct | |
4207 | * pointer passed in means that we need to find out from the app | |
4208 | * what port to get stats for (used through board control device). | |
4209 | */ | |
4210 | ||
d18a750f AC |
4211 | static int stli_getportstats(struct tty_struct *tty, struct stliport *portp, |
4212 | comstats_t __user *cp) | |
1da177e4 | 4213 | { |
1f8ec435 | 4214 | struct stlibrd *brdp; |
4ac4360b | 4215 | int rc; |
1da177e4 LT |
4216 | |
4217 | if (!portp) { | |
4218 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4219 | return -EFAULT; | |
4220 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4221 | stli_comstats.port); | |
4222 | if (!portp) | |
4223 | return -ENODEV; | |
4224 | } | |
4225 | ||
4226 | brdp = stli_brds[portp->brdnr]; | |
4227 | if (!brdp) | |
4228 | return -ENODEV; | |
4229 | ||
d18a750f | 4230 | if ((rc = stli_portcmdstats(tty, portp)) < 0) |
1da177e4 LT |
4231 | return rc; |
4232 | ||
4233 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? | |
4234 | -EFAULT : 0; | |
4235 | } | |
4236 | ||
4237 | /*****************************************************************************/ | |
4238 | ||
4239 | /* | |
4240 | * Clear the port stats structure. We also return it zeroed out... | |
4241 | */ | |
4242 | ||
1f8ec435 | 4243 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp) |
1da177e4 | 4244 | { |
1f8ec435 | 4245 | struct stlibrd *brdp; |
4ac4360b | 4246 | int rc; |
1da177e4 LT |
4247 | |
4248 | if (!portp) { | |
4249 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4250 | return -EFAULT; | |
4251 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4252 | stli_comstats.port); | |
4253 | if (!portp) | |
4254 | return -ENODEV; | |
4255 | } | |
4256 | ||
4257 | brdp = stli_brds[portp->brdnr]; | |
4258 | if (!brdp) | |
4259 | return -ENODEV; | |
4260 | ||
4261 | if (brdp->state & BST_STARTED) { | |
4262 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) | |
4263 | return rc; | |
4264 | } | |
4265 | ||
4266 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4267 | stli_comstats.brd = portp->brdnr; | |
4268 | stli_comstats.panel = portp->panelnr; | |
4269 | stli_comstats.port = portp->portnr; | |
4270 | ||
4271 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) | |
4272 | return -EFAULT; | |
4273 | return 0; | |
4274 | } | |
4275 | ||
4276 | /*****************************************************************************/ | |
4277 | ||
4278 | /* | |
4279 | * Return the entire driver ports structure to a user app. | |
4280 | */ | |
4281 | ||
1f8ec435 | 4282 | static int stli_getportstruct(struct stliport __user *arg) |
1da177e4 | 4283 | { |
1328d737 | 4284 | struct stliport stli_dummyport; |
1f8ec435 | 4285 | struct stliport *portp; |
1da177e4 | 4286 | |
1f8ec435 | 4287 | if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport))) |
1da177e4 LT |
4288 | return -EFAULT; |
4289 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, | |
4290 | stli_dummyport.portnr); | |
4291 | if (!portp) | |
4292 | return -ENODEV; | |
1f8ec435 | 4293 | if (copy_to_user(arg, portp, sizeof(struct stliport))) |
1da177e4 LT |
4294 | return -EFAULT; |
4295 | return 0; | |
4296 | } | |
4297 | ||
4298 | /*****************************************************************************/ | |
4299 | ||
4300 | /* | |
4301 | * Return the entire driver board structure to a user app. | |
4302 | */ | |
4303 | ||
1f8ec435 | 4304 | static int stli_getbrdstruct(struct stlibrd __user *arg) |
1da177e4 | 4305 | { |
1328d737 | 4306 | struct stlibrd stli_dummybrd; |
1f8ec435 | 4307 | struct stlibrd *brdp; |
1da177e4 | 4308 | |
1f8ec435 | 4309 | if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd))) |
1da177e4 | 4310 | return -EFAULT; |
1328d737 | 4311 | if (stli_dummybrd.brdnr >= STL_MAXBRDS) |
1da177e4 LT |
4312 | return -ENODEV; |
4313 | brdp = stli_brds[stli_dummybrd.brdnr]; | |
4314 | if (!brdp) | |
4315 | return -ENODEV; | |
1f8ec435 | 4316 | if (copy_to_user(arg, brdp, sizeof(struct stlibrd))) |
1da177e4 LT |
4317 | return -EFAULT; |
4318 | return 0; | |
4319 | } | |
4320 | ||
4321 | /*****************************************************************************/ | |
4322 | ||
4323 | /* | |
4324 | * The "staliomem" device is also required to do some special operations on | |
4325 | * the board. We need to be able to send an interrupt to the board, | |
4326 | * reset it, and start/stop it. | |
4327 | */ | |
4328 | ||
4329 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg) | |
4330 | { | |
1f8ec435 | 4331 | struct stlibrd *brdp; |
4ac4360b | 4332 | int brdnr, rc, done; |
1da177e4 LT |
4333 | void __user *argp = (void __user *)arg; |
4334 | ||
1da177e4 LT |
4335 | /* |
4336 | * First up handle the board independent ioctls. | |
4337 | */ | |
4338 | done = 0; | |
4339 | rc = 0; | |
4340 | ||
37361136 AC |
4341 | lock_kernel(); |
4342 | ||
1da177e4 LT |
4343 | switch (cmd) { |
4344 | case COM_GETPORTSTATS: | |
d18a750f | 4345 | rc = stli_getportstats(NULL, NULL, argp); |
1da177e4 LT |
4346 | done++; |
4347 | break; | |
4348 | case COM_CLRPORTSTATS: | |
4349 | rc = stli_clrportstats(NULL, argp); | |
4350 | done++; | |
4351 | break; | |
4352 | case COM_GETBRDSTATS: | |
4353 | rc = stli_getbrdstats(argp); | |
4354 | done++; | |
4355 | break; | |
4356 | case COM_READPORT: | |
4357 | rc = stli_getportstruct(argp); | |
4358 | done++; | |
4359 | break; | |
4360 | case COM_READBOARD: | |
4361 | rc = stli_getbrdstruct(argp); | |
4362 | done++; | |
4363 | break; | |
4364 | } | |
37361136 | 4365 | unlock_kernel(); |
1da177e4 LT |
4366 | |
4367 | if (done) | |
4ac4360b | 4368 | return rc; |
1da177e4 LT |
4369 | |
4370 | /* | |
4371 | * Now handle the board specific ioctls. These all depend on the | |
4372 | * minor number of the device they were called from. | |
4373 | */ | |
4374 | brdnr = iminor(ip); | |
4375 | if (brdnr >= STL_MAXBRDS) | |
4ac4360b | 4376 | return -ENODEV; |
1da177e4 LT |
4377 | brdp = stli_brds[brdnr]; |
4378 | if (!brdp) | |
4ac4360b | 4379 | return -ENODEV; |
1da177e4 | 4380 | if (brdp->state == 0) |
4ac4360b | 4381 | return -ENODEV; |
1da177e4 | 4382 | |
37361136 AC |
4383 | lock_kernel(); |
4384 | ||
1da177e4 LT |
4385 | switch (cmd) { |
4386 | case STL_BINTR: | |
4387 | EBRDINTR(brdp); | |
4388 | break; | |
4389 | case STL_BSTART: | |
4390 | rc = stli_startbrd(brdp); | |
4391 | break; | |
4392 | case STL_BSTOP: | |
4393 | brdp->state &= ~BST_STARTED; | |
4394 | break; | |
4395 | case STL_BRESET: | |
4396 | brdp->state &= ~BST_STARTED; | |
4397 | EBRDRESET(brdp); | |
4398 | if (stli_shared == 0) { | |
4399 | if (brdp->reenable != NULL) | |
4400 | (* brdp->reenable)(brdp); | |
4401 | } | |
4402 | break; | |
4403 | default: | |
4404 | rc = -ENOIOCTLCMD; | |
4405 | break; | |
4406 | } | |
37361136 | 4407 | unlock_kernel(); |
4ac4360b | 4408 | return rc; |
1da177e4 LT |
4409 | } |
4410 | ||
b68e31d0 | 4411 | static const struct tty_operations stli_ops = { |
1da177e4 LT |
4412 | .open = stli_open, |
4413 | .close = stli_close, | |
4414 | .write = stli_write, | |
4415 | .put_char = stli_putchar, | |
4416 | .flush_chars = stli_flushchars, | |
4417 | .write_room = stli_writeroom, | |
4418 | .chars_in_buffer = stli_charsinbuffer, | |
4419 | .ioctl = stli_ioctl, | |
4420 | .set_termios = stli_settermios, | |
4421 | .throttle = stli_throttle, | |
4422 | .unthrottle = stli_unthrottle, | |
4423 | .stop = stli_stop, | |
4424 | .start = stli_start, | |
4425 | .hangup = stli_hangup, | |
4426 | .flush_buffer = stli_flushbuffer, | |
4427 | .break_ctl = stli_breakctl, | |
4428 | .wait_until_sent = stli_waituntilsent, | |
4429 | .send_xchar = stli_sendxchar, | |
4430 | .read_proc = stli_readproc, | |
4431 | .tiocmget = stli_tiocmget, | |
4432 | .tiocmset = stli_tiocmset, | |
4433 | }; | |
4434 | ||
31f35939 AC |
4435 | static const struct tty_port_operations stli_port_ops = { |
4436 | .carrier_raised = stli_carrier_raised, | |
2a6eadbd | 4437 | .raise_dtr_rts = stli_raise_dtr_rts, |
31f35939 AC |
4438 | }; |
4439 | ||
1da177e4 | 4440 | /*****************************************************************************/ |
f1cc54f8 JS |
4441 | /* |
4442 | * Loadable module initialization stuff. | |
4443 | */ | |
1da177e4 | 4444 | |
f2362c94 JS |
4445 | static void istallion_cleanup_isa(void) |
4446 | { | |
4447 | struct stlibrd *brdp; | |
4448 | unsigned int j; | |
4449 | ||
4450 | for (j = 0; (j < stli_nrbrds); j++) { | |
4451 | if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED)) | |
4452 | continue; | |
4453 | ||
4454 | stli_cleanup_ports(brdp); | |
4455 | ||
4456 | iounmap(brdp->membase); | |
4457 | if (brdp->iosize > 0) | |
4458 | release_region(brdp->iobase, brdp->iosize); | |
4459 | kfree(brdp); | |
4460 | stli_brds[j] = NULL; | |
4461 | } | |
4462 | } | |
4463 | ||
f1cc54f8 | 4464 | static int __init istallion_module_init(void) |
1da177e4 | 4465 | { |
f2362c94 JS |
4466 | unsigned int i; |
4467 | int retval; | |
f1cc54f8 | 4468 | |
1da177e4 LT |
4469 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); |
4470 | ||
4ac4360b AC |
4471 | spin_lock_init(&stli_lock); |
4472 | spin_lock_init(&brd_lock); | |
4473 | ||
b0b4ed72 | 4474 | stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); |
f2362c94 | 4475 | if (!stli_txcookbuf) { |
a6614999 | 4476 | printk(KERN_ERR "istallion: failed to allocate memory " |
1da177e4 | 4477 | "(size=%d)\n", STLI_TXBUFSIZE); |
f2362c94 JS |
4478 | retval = -ENOMEM; |
4479 | goto err; | |
4480 | } | |
1da177e4 | 4481 | |
f2362c94 JS |
4482 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); |
4483 | if (!stli_serial) { | |
4484 | retval = -ENOMEM; | |
4485 | goto err_free; | |
4486 | } | |
1da177e4 | 4487 | |
1da177e4 LT |
4488 | stli_serial->owner = THIS_MODULE; |
4489 | stli_serial->driver_name = stli_drvname; | |
4490 | stli_serial->name = stli_serialname; | |
4491 | stli_serial->major = STL_SERIALMAJOR; | |
4492 | stli_serial->minor_start = 0; | |
4493 | stli_serial->type = TTY_DRIVER_TYPE_SERIAL; | |
4494 | stli_serial->subtype = SERIAL_TYPE_NORMAL; | |
4495 | stli_serial->init_termios = stli_deftermios; | |
ec3dde57 | 4496 | stli_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
1da177e4 LT |
4497 | tty_set_operations(stli_serial, &stli_ops); |
4498 | ||
f2362c94 JS |
4499 | retval = tty_register_driver(stli_serial); |
4500 | if (retval) { | |
a6614999 | 4501 | printk(KERN_ERR "istallion: failed to register serial driver\n"); |
f2362c94 JS |
4502 | goto err_ttyput; |
4503 | } | |
4504 | ||
4505 | retval = stli_initbrds(); | |
4506 | if (retval) | |
4507 | goto err_ttyunr; | |
4508 | ||
4509 | /* | |
4510 | * Set up a character driver for the shared memory region. We need this | |
4511 | * to down load the slave code image. Also it is a useful debugging tool. | |
4512 | */ | |
4513 | retval = register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem); | |
4514 | if (retval) { | |
a6614999 | 4515 | printk(KERN_ERR "istallion: failed to register serial memory " |
f2362c94 JS |
4516 | "device\n"); |
4517 | goto err_deinit; | |
1da177e4 | 4518 | } |
f2362c94 JS |
4519 | |
4520 | istallion_class = class_create(THIS_MODULE, "staliomem"); | |
4521 | for (i = 0; i < 4; i++) | |
03457cd4 GKH |
4522 | device_create(istallion_class, NULL, MKDEV(STL_SIOMEMMAJOR, i), |
4523 | NULL, "staliomem%d", i); | |
f2362c94 | 4524 | |
4ac4360b | 4525 | return 0; |
f2362c94 JS |
4526 | err_deinit: |
4527 | pci_unregister_driver(&stli_pcidriver); | |
4528 | istallion_cleanup_isa(); | |
4529 | err_ttyunr: | |
4530 | tty_unregister_driver(stli_serial); | |
4531 | err_ttyput: | |
4532 | put_tty_driver(stli_serial); | |
4533 | err_free: | |
4534 | kfree(stli_txcookbuf); | |
4535 | err: | |
4536 | return retval; | |
1da177e4 LT |
4537 | } |
4538 | ||
4539 | /*****************************************************************************/ | |
f1cc54f8 JS |
4540 | |
4541 | static void __exit istallion_module_exit(void) | |
4542 | { | |
f1cc54f8 | 4543 | unsigned int j; |
f1cc54f8 JS |
4544 | |
4545 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, | |
4546 | stli_drvversion); | |
4547 | ||
f1cc54f8 JS |
4548 | if (stli_timeron) { |
4549 | stli_timeron = 0; | |
4550 | del_timer_sync(&stli_timerlist); | |
4551 | } | |
4552 | ||
f2362c94 JS |
4553 | unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"); |
4554 | ||
f1cc54f8 | 4555 | for (j = 0; j < 4; j++) |
07c015e7 | 4556 | device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j)); |
f1cc54f8 | 4557 | class_destroy(istallion_class); |
f1cc54f8 | 4558 | |
f2362c94 JS |
4559 | pci_unregister_driver(&stli_pcidriver); |
4560 | istallion_cleanup_isa(); | |
f1cc54f8 | 4561 | |
f2362c94 JS |
4562 | tty_unregister_driver(stli_serial); |
4563 | put_tty_driver(stli_serial); | |
f1cc54f8 | 4564 | |
f2362c94 | 4565 | kfree(stli_txcookbuf); |
f1cc54f8 JS |
4566 | } |
4567 | ||
4568 | module_init(istallion_module_init); | |
4569 | module_exit(istallion_module_exit); |