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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; | |
154 | ||
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); |
672b2714 | 598 | static int stli_init(void); |
1da177e4 LT |
599 | static int stli_open(struct tty_struct *tty, struct file *filp); |
600 | static void stli_close(struct tty_struct *tty, struct file *filp); | |
601 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); | |
602 | static void stli_putchar(struct tty_struct *tty, unsigned char ch); | |
603 | static void stli_flushchars(struct tty_struct *tty); | |
604 | static int stli_writeroom(struct tty_struct *tty); | |
605 | static int stli_charsinbuffer(struct tty_struct *tty); | |
606 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); | |
606d099c | 607 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old); |
1da177e4 LT |
608 | static void stli_throttle(struct tty_struct *tty); |
609 | static void stli_unthrottle(struct tty_struct *tty); | |
610 | static void stli_stop(struct tty_struct *tty); | |
611 | static void stli_start(struct tty_struct *tty); | |
612 | static void stli_flushbuffer(struct tty_struct *tty); | |
613 | static void stli_breakctl(struct tty_struct *tty, int state); | |
614 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); | |
615 | static void stli_sendxchar(struct tty_struct *tty, char ch); | |
616 | static void stli_hangup(struct tty_struct *tty); | |
1f8ec435 | 617 | static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos); |
1da177e4 | 618 | |
1f8ec435 JS |
619 | static int stli_brdinit(struct stlibrd *brdp); |
620 | static int stli_startbrd(struct stlibrd *brdp); | |
1da177e4 LT |
621 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); |
622 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); | |
623 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); | |
1f8ec435 | 624 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp); |
1da177e4 | 625 | static void stli_poll(unsigned long arg); |
1f8ec435 JS |
626 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp); |
627 | static int stli_initopen(struct stlibrd *brdp, struct stliport *portp); | |
628 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); | |
629 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); | |
630 | static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp); | |
3e577a80 | 631 | static void stli_dohangup(struct work_struct *); |
1f8ec435 JS |
632 | static int stli_setport(struct stliport *portp); |
633 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
634 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
635 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
636 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp); | |
637 | static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp); | |
1da177e4 LT |
638 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); |
639 | static long stli_mktiocm(unsigned long sigvalue); | |
1f8ec435 JS |
640 | static void stli_read(struct stlibrd *brdp, struct stliport *portp); |
641 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp); | |
642 | static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp); | |
1da177e4 | 643 | static int stli_getbrdstats(combrd_t __user *bp); |
1f8ec435 JS |
644 | static int stli_getportstats(struct stliport *portp, comstats_t __user *cp); |
645 | static int stli_portcmdstats(struct stliport *portp); | |
646 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp); | |
647 | static int stli_getportstruct(struct stliport __user *arg); | |
648 | static int stli_getbrdstruct(struct stlibrd __user *arg); | |
649 | static struct stlibrd *stli_allocbrd(void); | |
650 | ||
651 | static void stli_ecpinit(struct stlibrd *brdp); | |
652 | static void stli_ecpenable(struct stlibrd *brdp); | |
653 | static void stli_ecpdisable(struct stlibrd *brdp); | |
654 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
655 | static void stli_ecpreset(struct stlibrd *brdp); | |
656 | static void stli_ecpintr(struct stlibrd *brdp); | |
657 | static void stli_ecpeiinit(struct stlibrd *brdp); | |
658 | static void stli_ecpeienable(struct stlibrd *brdp); | |
659 | static void stli_ecpeidisable(struct stlibrd *brdp); | |
660 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
661 | static void stli_ecpeireset(struct stlibrd *brdp); | |
662 | static void stli_ecpmcenable(struct stlibrd *brdp); | |
663 | static void stli_ecpmcdisable(struct stlibrd *brdp); | |
664 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
665 | static void stli_ecpmcreset(struct stlibrd *brdp); | |
666 | static void stli_ecppciinit(struct stlibrd *brdp); | |
667 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
668 | static void stli_ecppcireset(struct stlibrd *brdp); | |
669 | ||
670 | static void stli_onbinit(struct stlibrd *brdp); | |
671 | static void stli_onbenable(struct stlibrd *brdp); | |
672 | static void stli_onbdisable(struct stlibrd *brdp); | |
673 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
674 | static void stli_onbreset(struct stlibrd *brdp); | |
675 | static void stli_onbeinit(struct stlibrd *brdp); | |
676 | static void stli_onbeenable(struct stlibrd *brdp); | |
677 | static void stli_onbedisable(struct stlibrd *brdp); | |
678 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
679 | static void stli_onbereset(struct stlibrd *brdp); | |
680 | static void stli_bbyinit(struct stlibrd *brdp); | |
681 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
682 | static void stli_bbyreset(struct stlibrd *brdp); | |
683 | static void stli_stalinit(struct stlibrd *brdp); | |
684 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
685 | static void stli_stalreset(struct stlibrd *brdp); | |
686 | ||
1328d737 | 687 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr); |
1f8ec435 JS |
688 | |
689 | static int stli_initecp(struct stlibrd *brdp); | |
690 | static int stli_initonb(struct stlibrd *brdp); | |
a00f33f3 | 691 | #if STLI_EISAPROBE != 0 |
1f8ec435 | 692 | static int stli_eisamemprobe(struct stlibrd *brdp); |
a00f33f3 | 693 | #endif |
1f8ec435 | 694 | static int stli_initports(struct stlibrd *brdp); |
1da177e4 | 695 | |
1da177e4 LT |
696 | /*****************************************************************************/ |
697 | ||
698 | /* | |
699 | * Define the driver info for a user level shared memory device. This | |
700 | * device will work sort of like the /dev/kmem device - except that it | |
701 | * will give access to the shared memory on the Stallion intelligent | |
702 | * board. This is also a very useful debugging tool. | |
703 | */ | |
62322d25 | 704 | static const struct file_operations stli_fsiomem = { |
1da177e4 LT |
705 | .owner = THIS_MODULE, |
706 | .read = stli_memread, | |
707 | .write = stli_memwrite, | |
708 | .ioctl = stli_memioctl, | |
709 | }; | |
710 | ||
711 | /*****************************************************************************/ | |
712 | ||
713 | /* | |
714 | * Define a timer_list entry for our poll routine. The slave board | |
715 | * is polled every so often to see if anything needs doing. This is | |
716 | * much cheaper on host cpu than using interrupts. It turns out to | |
717 | * not increase character latency by much either... | |
718 | */ | |
8d06afab | 719 | static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); |
1da177e4 LT |
720 | |
721 | static int stli_timeron; | |
722 | ||
723 | /* | |
724 | * Define the calculation for the timeout routine. | |
725 | */ | |
726 | #define STLI_TIMEOUT (jiffies + 1) | |
727 | ||
728 | /*****************************************************************************/ | |
729 | ||
ca8eca68 | 730 | static struct class *istallion_class; |
1da177e4 | 731 | |
1f8ec435 | 732 | static void stli_cleanup_ports(struct stlibrd *brdp) |
845bead4 | 733 | { |
1f8ec435 | 734 | struct stliport *portp; |
845bead4 JS |
735 | unsigned int j; |
736 | ||
737 | for (j = 0; j < STL_MAXPORTS; j++) { | |
738 | portp = brdp->ports[j]; | |
739 | if (portp != NULL) { | |
740 | if (portp->tty != NULL) | |
741 | tty_hangup(portp->tty); | |
742 | kfree(portp); | |
743 | } | |
744 | } | |
745 | } | |
746 | ||
1da177e4 LT |
747 | /* |
748 | * Loadable module initialization stuff. | |
749 | */ | |
750 | ||
751 | static int __init istallion_module_init(void) | |
752 | { | |
1da177e4 | 753 | stli_init(); |
4ac4360b | 754 | return 0; |
1da177e4 LT |
755 | } |
756 | ||
757 | /*****************************************************************************/ | |
758 | ||
759 | static void __exit istallion_module_exit(void) | |
760 | { | |
1f8ec435 | 761 | struct stlibrd *brdp; |
1328d737 | 762 | unsigned int j; |
845bead4 | 763 | int i; |
1da177e4 | 764 | |
1da177e4 LT |
765 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, |
766 | stli_drvversion); | |
767 | ||
845bead4 | 768 | pci_unregister_driver(&stli_pcidriver); |
4ac4360b AC |
769 | /* |
770 | * Free up all allocated resources used by the ports. This includes | |
771 | * memory and interrupts. | |
772 | */ | |
1da177e4 LT |
773 | if (stli_timeron) { |
774 | stli_timeron = 0; | |
4ac4360b | 775 | del_timer_sync(&stli_timerlist); |
1da177e4 LT |
776 | } |
777 | ||
778 | i = tty_unregister_driver(stli_serial); | |
1da177e4 | 779 | put_tty_driver(stli_serial); |
1328d737 JS |
780 | for (j = 0; j < 4; j++) |
781 | class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j)); | |
ca8eca68 | 782 | class_destroy(istallion_class); |
1da177e4 LT |
783 | if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) |
784 | printk("STALLION: failed to un-register serial memory device, " | |
785 | "errno=%d\n", -i); | |
735d5661 | 786 | |
735d5661 | 787 | kfree(stli_txcookbuf); |
1da177e4 | 788 | |
1328d737 | 789 | for (j = 0; (j < stli_nrbrds); j++) { |
39014172 | 790 | if ((brdp = stli_brds[j]) == NULL || (brdp->state & BST_PROBED)) |
1da177e4 | 791 | continue; |
845bead4 JS |
792 | |
793 | stli_cleanup_ports(brdp); | |
1da177e4 LT |
794 | |
795 | iounmap(brdp->membase); | |
796 | if (brdp->iosize > 0) | |
797 | release_region(brdp->iobase, brdp->iosize); | |
798 | kfree(brdp); | |
1328d737 | 799 | stli_brds[j] = NULL; |
1da177e4 | 800 | } |
1da177e4 LT |
801 | } |
802 | ||
803 | module_init(istallion_module_init); | |
804 | module_exit(istallion_module_exit); | |
805 | ||
806 | /*****************************************************************************/ | |
807 | ||
1da177e4 LT |
808 | /* |
809 | * Parse the supplied argument string, into the board conf struct. | |
810 | */ | |
811 | ||
1f8ec435 | 812 | static int stli_parsebrd(struct stlconf *confp, char **argp) |
1da177e4 | 813 | { |
1328d737 | 814 | unsigned int i; |
4ac4360b | 815 | char *sp; |
1da177e4 | 816 | |
4ac4360b AC |
817 | if (argp[0] == NULL || *argp[0] == 0) |
818 | return 0; | |
1da177e4 LT |
819 | |
820 | for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) | |
a3f8d9d5 | 821 | *sp = tolower(*sp); |
1da177e4 | 822 | |
fe971071 | 823 | for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) { |
1da177e4 LT |
824 | if (strcmp(stli_brdstr[i].name, argp[0]) == 0) |
825 | break; | |
826 | } | |
fe971071 | 827 | if (i == ARRAY_SIZE(stli_brdstr)) { |
1da177e4 | 828 | printk("STALLION: unknown board name, %s?\n", argp[0]); |
fe971071 | 829 | return 0; |
1da177e4 LT |
830 | } |
831 | ||
832 | confp->brdtype = stli_brdstr[i].type; | |
4ac4360b | 833 | if (argp[1] != NULL && *argp[1] != 0) |
a3f8d9d5 | 834 | confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0); |
4ac4360b | 835 | if (argp[2] != NULL && *argp[2] != 0) |
a3f8d9d5 | 836 | confp->memaddr = simple_strtoul(argp[2], NULL, 0); |
1da177e4 LT |
837 | return(1); |
838 | } | |
839 | ||
1da177e4 LT |
840 | /*****************************************************************************/ |
841 | ||
1da177e4 LT |
842 | static int stli_open(struct tty_struct *tty, struct file *filp) |
843 | { | |
1f8ec435 JS |
844 | struct stlibrd *brdp; |
845 | struct stliport *portp; | |
1328d737 JS |
846 | unsigned int minordev, brdnr, portnr; |
847 | int rc; | |
1da177e4 LT |
848 | |
849 | minordev = tty->index; | |
850 | brdnr = MINOR2BRD(minordev); | |
851 | if (brdnr >= stli_nrbrds) | |
4ac4360b | 852 | return -ENODEV; |
1da177e4 | 853 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
854 | if (brdp == NULL) |
855 | return -ENODEV; | |
1da177e4 | 856 | if ((brdp->state & BST_STARTED) == 0) |
4ac4360b | 857 | return -ENODEV; |
1da177e4 | 858 | portnr = MINOR2PORT(minordev); |
1328d737 | 859 | if (portnr > brdp->nrports) |
4ac4360b | 860 | return -ENODEV; |
1da177e4 LT |
861 | |
862 | portp = brdp->ports[portnr]; | |
4ac4360b AC |
863 | if (portp == NULL) |
864 | return -ENODEV; | |
1da177e4 | 865 | if (portp->devnr < 1) |
4ac4360b | 866 | return -ENODEV; |
1da177e4 LT |
867 | |
868 | ||
869 | /* | |
870 | * Check if this port is in the middle of closing. If so then wait | |
871 | * until it is closed then return error status based on flag settings. | |
872 | * The sleep here does not need interrupt protection since the wakeup | |
873 | * for it is done with the same context. | |
874 | */ | |
875 | if (portp->flags & ASYNC_CLOSING) { | |
876 | interruptible_sleep_on(&portp->close_wait); | |
877 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
4ac4360b AC |
878 | return -EAGAIN; |
879 | return -ERESTARTSYS; | |
1da177e4 LT |
880 | } |
881 | ||
882 | /* | |
883 | * On the first open of the device setup the port hardware, and | |
884 | * initialize the per port data structure. Since initializing the port | |
885 | * requires several commands to the board we will need to wait for any | |
886 | * other open that is already initializing the port. | |
887 | */ | |
888 | portp->tty = tty; | |
889 | tty->driver_data = portp; | |
890 | portp->refcount++; | |
891 | ||
892 | wait_event_interruptible(portp->raw_wait, | |
893 | !test_bit(ST_INITIALIZING, &portp->state)); | |
894 | if (signal_pending(current)) | |
4ac4360b | 895 | return -ERESTARTSYS; |
1da177e4 LT |
896 | |
897 | if ((portp->flags & ASYNC_INITIALIZED) == 0) { | |
898 | set_bit(ST_INITIALIZING, &portp->state); | |
899 | if ((rc = stli_initopen(brdp, portp)) >= 0) { | |
900 | portp->flags |= ASYNC_INITIALIZED; | |
901 | clear_bit(TTY_IO_ERROR, &tty->flags); | |
902 | } | |
903 | clear_bit(ST_INITIALIZING, &portp->state); | |
904 | wake_up_interruptible(&portp->raw_wait); | |
905 | if (rc < 0) | |
4ac4360b | 906 | return rc; |
1da177e4 LT |
907 | } |
908 | ||
909 | /* | |
910 | * Check if this port is in the middle of closing. If so then wait | |
911 | * until it is closed then return error status, based on flag settings. | |
912 | * The sleep here does not need interrupt protection since the wakeup | |
913 | * for it is done with the same context. | |
914 | */ | |
915 | if (portp->flags & ASYNC_CLOSING) { | |
916 | interruptible_sleep_on(&portp->close_wait); | |
917 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
4ac4360b AC |
918 | return -EAGAIN; |
919 | return -ERESTARTSYS; | |
1da177e4 LT |
920 | } |
921 | ||
922 | /* | |
923 | * Based on type of open being done check if it can overlap with any | |
924 | * previous opens still in effect. If we are a normal serial device | |
925 | * then also we might have to wait for carrier. | |
926 | */ | |
927 | if (!(filp->f_flags & O_NONBLOCK)) { | |
928 | if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0) | |
4ac4360b | 929 | return rc; |
1da177e4 LT |
930 | } |
931 | portp->flags |= ASYNC_NORMAL_ACTIVE; | |
4ac4360b | 932 | return 0; |
1da177e4 LT |
933 | } |
934 | ||
935 | /*****************************************************************************/ | |
936 | ||
937 | static void stli_close(struct tty_struct *tty, struct file *filp) | |
938 | { | |
1f8ec435 JS |
939 | struct stlibrd *brdp; |
940 | struct stliport *portp; | |
4ac4360b | 941 | unsigned long flags; |
1da177e4 LT |
942 | |
943 | portp = tty->driver_data; | |
4ac4360b | 944 | if (portp == NULL) |
1da177e4 LT |
945 | return; |
946 | ||
4ac4360b | 947 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 | 948 | if (tty_hung_up_p(filp)) { |
4ac4360b | 949 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
950 | return; |
951 | } | |
952 | if ((tty->count == 1) && (portp->refcount != 1)) | |
953 | portp->refcount = 1; | |
954 | if (portp->refcount-- > 1) { | |
4ac4360b | 955 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
956 | return; |
957 | } | |
958 | ||
959 | portp->flags |= ASYNC_CLOSING; | |
960 | ||
961 | /* | |
962 | * May want to wait for data to drain before closing. The BUSY flag | |
963 | * keeps track of whether we are still transmitting or not. It is | |
964 | * updated by messages from the slave - indicating when all chars | |
965 | * really have drained. | |
966 | */ | |
967 | if (tty == stli_txcooktty) | |
968 | stli_flushchars(tty); | |
969 | tty->closing = 1; | |
4ac4360b AC |
970 | spin_unlock_irqrestore(&stli_lock, flags); |
971 | ||
1da177e4 LT |
972 | if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
973 | tty_wait_until_sent(tty, portp->closing_wait); | |
974 | ||
975 | portp->flags &= ~ASYNC_INITIALIZED; | |
976 | brdp = stli_brds[portp->brdnr]; | |
977 | stli_rawclose(brdp, portp, 0, 0); | |
978 | if (tty->termios->c_cflag & HUPCL) { | |
979 | stli_mkasysigs(&portp->asig, 0, 0); | |
980 | if (test_bit(ST_CMDING, &portp->state)) | |
981 | set_bit(ST_DOSIGS, &portp->state); | |
982 | else | |
983 | stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig, | |
984 | sizeof(asysigs_t), 0); | |
985 | } | |
986 | clear_bit(ST_TXBUSY, &portp->state); | |
987 | clear_bit(ST_RXSTOP, &portp->state); | |
988 | set_bit(TTY_IO_ERROR, &tty->flags); | |
989 | if (tty->ldisc.flush_buffer) | |
990 | (tty->ldisc.flush_buffer)(tty); | |
991 | set_bit(ST_DOFLUSHRX, &portp->state); | |
992 | stli_flushbuffer(tty); | |
993 | ||
994 | tty->closing = 0; | |
4ac4360b | 995 | portp->tty = NULL; |
1da177e4 LT |
996 | |
997 | if (portp->openwaitcnt) { | |
998 | if (portp->close_delay) | |
999 | msleep_interruptible(jiffies_to_msecs(portp->close_delay)); | |
1000 | wake_up_interruptible(&portp->open_wait); | |
1001 | } | |
1002 | ||
1003 | portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
1004 | wake_up_interruptible(&portp->close_wait); | |
1da177e4 LT |
1005 | } |
1006 | ||
1007 | /*****************************************************************************/ | |
1008 | ||
1009 | /* | |
1010 | * Carry out first open operations on a port. This involves a number of | |
1011 | * commands to be sent to the slave. We need to open the port, set the | |
1012 | * notification events, set the initial port settings, get and set the | |
1013 | * initial signal values. We sleep and wait in between each one. But | |
1014 | * this still all happens pretty quickly. | |
1015 | */ | |
1016 | ||
1f8ec435 | 1017 | static int stli_initopen(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 1018 | { |
4ac4360b AC |
1019 | struct tty_struct *tty; |
1020 | asynotify_t nt; | |
1021 | asyport_t aport; | |
1022 | int rc; | |
1da177e4 LT |
1023 | |
1024 | if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) | |
4ac4360b | 1025 | return rc; |
1da177e4 LT |
1026 | |
1027 | memset(&nt, 0, sizeof(asynotify_t)); | |
1028 | nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); | |
1029 | nt.signal = SG_DCD; | |
1030 | if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, | |
1031 | sizeof(asynotify_t), 0)) < 0) | |
4ac4360b | 1032 | return rc; |
1da177e4 LT |
1033 | |
1034 | tty = portp->tty; | |
4ac4360b AC |
1035 | if (tty == NULL) |
1036 | return -ENODEV; | |
1da177e4 LT |
1037 | stli_mkasyport(portp, &aport, tty->termios); |
1038 | if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, | |
1039 | sizeof(asyport_t), 0)) < 0) | |
4ac4360b | 1040 | return rc; |
1da177e4 LT |
1041 | |
1042 | set_bit(ST_GETSIGS, &portp->state); | |
1043 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, | |
1044 | sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1045 | return rc; |
1da177e4 LT |
1046 | if (test_and_clear_bit(ST_GETSIGS, &portp->state)) |
1047 | portp->sigs = stli_mktiocm(portp->asig.sigvalue); | |
1048 | stli_mkasysigs(&portp->asig, 1, 1); | |
1049 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1050 | sizeof(asysigs_t), 0)) < 0) | |
4ac4360b | 1051 | return rc; |
1da177e4 | 1052 | |
4ac4360b | 1053 | return 0; |
1da177e4 LT |
1054 | } |
1055 | ||
1056 | /*****************************************************************************/ | |
1057 | ||
1058 | /* | |
1059 | * Send an open message to the slave. This will sleep waiting for the | |
1060 | * acknowledgement, so must have user context. We need to co-ordinate | |
1061 | * with close events here, since we don't want open and close events | |
1062 | * to overlap. | |
1063 | */ | |
1064 | ||
1f8ec435 | 1065 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 1066 | { |
4ac4360b AC |
1067 | cdkhdr_t __iomem *hdrp; |
1068 | cdkctrl_t __iomem *cp; | |
1069 | unsigned char __iomem *bits; | |
1070 | unsigned long flags; | |
1071 | int rc; | |
1da177e4 LT |
1072 | |
1073 | /* | |
1074 | * Send a message to the slave to open this port. | |
1075 | */ | |
1da177e4 LT |
1076 | |
1077 | /* | |
1078 | * Slave is already closing this port. This can happen if a hangup | |
1079 | * occurs on this port. So we must wait until it is complete. The | |
1080 | * order of opens and closes may not be preserved across shared | |
1081 | * memory, so we must wait until it is complete. | |
1082 | */ | |
1083 | wait_event_interruptible(portp->raw_wait, | |
1084 | !test_bit(ST_CLOSING, &portp->state)); | |
1085 | if (signal_pending(current)) { | |
1da177e4 LT |
1086 | return -ERESTARTSYS; |
1087 | } | |
1088 | ||
1089 | /* | |
1090 | * Everything is ready now, so write the open message into shared | |
1091 | * memory. Once the message is in set the service bits to say that | |
1092 | * this port wants service. | |
1093 | */ | |
4ac4360b | 1094 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1095 | EBRDENABLE(brdp); |
4ac4360b AC |
1096 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1097 | writel(arg, &cp->openarg); | |
1098 | writeb(1, &cp->open); | |
1099 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1100 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1101 | portp->portidx; |
4ac4360b | 1102 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1103 | EBRDDISABLE(brdp); |
1104 | ||
1105 | if (wait == 0) { | |
4ac4360b AC |
1106 | spin_unlock_irqrestore(&brd_lock, flags); |
1107 | return 0; | |
1da177e4 LT |
1108 | } |
1109 | ||
1110 | /* | |
1111 | * Slave is in action, so now we must wait for the open acknowledgment | |
1112 | * to come back. | |
1113 | */ | |
1114 | rc = 0; | |
1115 | set_bit(ST_OPENING, &portp->state); | |
4ac4360b AC |
1116 | spin_unlock_irqrestore(&brd_lock, flags); |
1117 | ||
1da177e4 LT |
1118 | wait_event_interruptible(portp->raw_wait, |
1119 | !test_bit(ST_OPENING, &portp->state)); | |
1120 | if (signal_pending(current)) | |
1121 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1122 | |
1123 | if ((rc == 0) && (portp->rc != 0)) | |
1124 | rc = -EIO; | |
4ac4360b | 1125 | return rc; |
1da177e4 LT |
1126 | } |
1127 | ||
1128 | /*****************************************************************************/ | |
1129 | ||
1130 | /* | |
1131 | * Send a close message to the slave. Normally this will sleep waiting | |
1132 | * for the acknowledgement, but if wait parameter is 0 it will not. If | |
1133 | * wait is true then must have user context (to sleep). | |
1134 | */ | |
1135 | ||
1f8ec435 | 1136 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 1137 | { |
4ac4360b AC |
1138 | cdkhdr_t __iomem *hdrp; |
1139 | cdkctrl_t __iomem *cp; | |
1140 | unsigned char __iomem *bits; | |
1141 | unsigned long flags; | |
1142 | int rc; | |
1da177e4 LT |
1143 | |
1144 | /* | |
1145 | * Slave is already closing this port. This can happen if a hangup | |
1146 | * occurs on this port. | |
1147 | */ | |
1148 | if (wait) { | |
1149 | wait_event_interruptible(portp->raw_wait, | |
1150 | !test_bit(ST_CLOSING, &portp->state)); | |
1151 | if (signal_pending(current)) { | |
1da177e4 LT |
1152 | return -ERESTARTSYS; |
1153 | } | |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * Write the close command into shared memory. | |
1158 | */ | |
4ac4360b | 1159 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1160 | EBRDENABLE(brdp); |
4ac4360b AC |
1161 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1162 | writel(arg, &cp->closearg); | |
1163 | writeb(1, &cp->close); | |
1164 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1165 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1166 | portp->portidx; |
4ac4360b | 1167 | writeb(readb(bits) |portp->portbit, bits); |
1da177e4 LT |
1168 | EBRDDISABLE(brdp); |
1169 | ||
1170 | set_bit(ST_CLOSING, &portp->state); | |
4ac4360b AC |
1171 | spin_unlock_irqrestore(&brd_lock, flags); |
1172 | ||
1173 | if (wait == 0) | |
1174 | return 0; | |
1da177e4 LT |
1175 | |
1176 | /* | |
1177 | * Slave is in action, so now we must wait for the open acknowledgment | |
1178 | * to come back. | |
1179 | */ | |
1180 | rc = 0; | |
1181 | wait_event_interruptible(portp->raw_wait, | |
1182 | !test_bit(ST_CLOSING, &portp->state)); | |
1183 | if (signal_pending(current)) | |
1184 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1185 | |
1186 | if ((rc == 0) && (portp->rc != 0)) | |
1187 | rc = -EIO; | |
4ac4360b | 1188 | return rc; |
1da177e4 LT |
1189 | } |
1190 | ||
1191 | /*****************************************************************************/ | |
1192 | ||
1193 | /* | |
1194 | * Send a command to the slave and wait for the response. This must | |
1195 | * have user context (it sleeps). This routine is generic in that it | |
1196 | * can send any type of command. Its purpose is to wait for that command | |
1197 | * to complete (as opposed to initiating the command then returning). | |
1198 | */ | |
1199 | ||
1f8ec435 | 1200 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 1201 | { |
1da177e4 LT |
1202 | wait_event_interruptible(portp->raw_wait, |
1203 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1204 | if (signal_pending(current)) |
1da177e4 | 1205 | return -ERESTARTSYS; |
1da177e4 LT |
1206 | |
1207 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
1208 | ||
1209 | wait_event_interruptible(portp->raw_wait, | |
1210 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1211 | if (signal_pending(current)) |
1da177e4 | 1212 | return -ERESTARTSYS; |
1da177e4 LT |
1213 | |
1214 | if (portp->rc != 0) | |
4ac4360b AC |
1215 | return -EIO; |
1216 | return 0; | |
1da177e4 LT |
1217 | } |
1218 | ||
1219 | /*****************************************************************************/ | |
1220 | ||
1221 | /* | |
1222 | * Send the termios settings for this port to the slave. This sleeps | |
1223 | * waiting for the command to complete - so must have user context. | |
1224 | */ | |
1225 | ||
1f8ec435 | 1226 | static int stli_setport(struct stliport *portp) |
1da177e4 | 1227 | { |
1f8ec435 | 1228 | struct stlibrd *brdp; |
4ac4360b | 1229 | asyport_t aport; |
1da177e4 | 1230 | |
4ac4360b AC |
1231 | if (portp == NULL) |
1232 | return -ENODEV; | |
1233 | if (portp->tty == NULL) | |
1234 | return -ENODEV; | |
1328d737 | 1235 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1236 | return -ENODEV; |
1da177e4 | 1237 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1238 | if (brdp == NULL) |
1239 | return -ENODEV; | |
1da177e4 LT |
1240 | |
1241 | stli_mkasyport(portp, &aport, portp->tty->termios); | |
1242 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); | |
1243 | } | |
1244 | ||
1245 | /*****************************************************************************/ | |
1246 | ||
1247 | /* | |
1248 | * Possibly need to wait for carrier (DCD signal) to come high. Say | |
1249 | * maybe because if we are clocal then we don't need to wait... | |
1250 | */ | |
1251 | ||
1f8ec435 | 1252 | static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp) |
1da177e4 | 1253 | { |
4ac4360b AC |
1254 | unsigned long flags; |
1255 | int rc, doclocal; | |
1da177e4 LT |
1256 | |
1257 | rc = 0; | |
1258 | doclocal = 0; | |
1259 | ||
1260 | if (portp->tty->termios->c_cflag & CLOCAL) | |
1261 | doclocal++; | |
1262 | ||
4ac4360b | 1263 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
1264 | portp->openwaitcnt++; |
1265 | if (! tty_hung_up_p(filp)) | |
1266 | portp->refcount--; | |
4ac4360b | 1267 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
1268 | |
1269 | for (;;) { | |
1270 | stli_mkasysigs(&portp->asig, 1, 1); | |
1271 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, | |
1272 | &portp->asig, sizeof(asysigs_t), 0)) < 0) | |
1273 | break; | |
1274 | if (tty_hung_up_p(filp) || | |
1275 | ((portp->flags & ASYNC_INITIALIZED) == 0)) { | |
1276 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
1277 | rc = -EBUSY; | |
1278 | else | |
1279 | rc = -ERESTARTSYS; | |
1280 | break; | |
1281 | } | |
1282 | if (((portp->flags & ASYNC_CLOSING) == 0) && | |
1283 | (doclocal || (portp->sigs & TIOCM_CD))) { | |
1284 | break; | |
1285 | } | |
1286 | if (signal_pending(current)) { | |
1287 | rc = -ERESTARTSYS; | |
1288 | break; | |
1289 | } | |
1290 | interruptible_sleep_on(&portp->open_wait); | |
1291 | } | |
1292 | ||
4ac4360b | 1293 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
1294 | if (! tty_hung_up_p(filp)) |
1295 | portp->refcount++; | |
1296 | portp->openwaitcnt--; | |
4ac4360b | 1297 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 | 1298 | |
4ac4360b | 1299 | return rc; |
1da177e4 LT |
1300 | } |
1301 | ||
1302 | /*****************************************************************************/ | |
1303 | ||
1304 | /* | |
1305 | * Write routine. Take the data and put it in the shared memory ring | |
1306 | * queue. If port is not already sending chars then need to mark the | |
1307 | * service bits for this port. | |
1308 | */ | |
1309 | ||
1310 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1311 | { | |
4ac4360b AC |
1312 | cdkasy_t __iomem *ap; |
1313 | cdkhdr_t __iomem *hdrp; | |
1314 | unsigned char __iomem *bits; | |
1315 | unsigned char __iomem *shbuf; | |
1316 | unsigned char *chbuf; | |
1f8ec435 JS |
1317 | struct stliport *portp; |
1318 | struct stlibrd *brdp; | |
4ac4360b AC |
1319 | unsigned int len, stlen, head, tail, size; |
1320 | unsigned long flags; | |
1da177e4 | 1321 | |
1da177e4 LT |
1322 | if (tty == stli_txcooktty) |
1323 | stli_flushchars(tty); | |
1324 | portp = tty->driver_data; | |
4ac4360b AC |
1325 | if (portp == NULL) |
1326 | return 0; | |
1328d737 | 1327 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1328 | return 0; |
1da177e4 | 1329 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1330 | if (brdp == NULL) |
1331 | return 0; | |
1da177e4 LT |
1332 | chbuf = (unsigned char *) buf; |
1333 | ||
1334 | /* | |
1335 | * All data is now local, shove as much as possible into shared memory. | |
1336 | */ | |
4ac4360b | 1337 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1338 | EBRDENABLE(brdp); |
4ac4360b AC |
1339 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1340 | head = (unsigned int) readw(&ap->txq.head); | |
1341 | tail = (unsigned int) readw(&ap->txq.tail); | |
1342 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1343 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1344 | size = portp->txsize; |
1345 | if (head >= tail) { | |
1346 | len = size - (head - tail) - 1; | |
1347 | stlen = size - head; | |
1348 | } else { | |
1349 | len = tail - head - 1; | |
1350 | stlen = len; | |
1351 | } | |
1352 | ||
a3f8d9d5 | 1353 | len = min(len, (unsigned int)count); |
1da177e4 | 1354 | count = 0; |
4ac4360b | 1355 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1356 | |
1357 | while (len > 0) { | |
a3f8d9d5 | 1358 | stlen = min(len, stlen); |
4ac4360b | 1359 | memcpy_toio(shbuf + head, chbuf, stlen); |
1da177e4 LT |
1360 | chbuf += stlen; |
1361 | len -= stlen; | |
1362 | count += stlen; | |
1363 | head += stlen; | |
1364 | if (head >= size) { | |
1365 | head = 0; | |
1366 | stlen = tail; | |
1367 | } | |
1368 | } | |
1369 | ||
4ac4360b AC |
1370 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1371 | writew(head, &ap->txq.head); | |
1da177e4 | 1372 | if (test_bit(ST_TXBUSY, &portp->state)) { |
4ac4360b AC |
1373 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1374 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1375 | } |
4ac4360b AC |
1376 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1377 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1378 | portp->portidx; |
4ac4360b | 1379 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1380 | set_bit(ST_TXBUSY, &portp->state); |
1381 | EBRDDISABLE(brdp); | |
4ac4360b | 1382 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1383 | |
1384 | return(count); | |
1385 | } | |
1386 | ||
1387 | /*****************************************************************************/ | |
1388 | ||
1389 | /* | |
1390 | * Output a single character. We put it into a temporary local buffer | |
1391 | * (for speed) then write out that buffer when the flushchars routine | |
1392 | * is called. There is a safety catch here so that if some other port | |
1393 | * writes chars before the current buffer has been, then we write them | |
1394 | * first them do the new ports. | |
1395 | */ | |
1396 | ||
1397 | static void stli_putchar(struct tty_struct *tty, unsigned char ch) | |
1398 | { | |
1da177e4 | 1399 | if (tty != stli_txcooktty) { |
4ac4360b | 1400 | if (stli_txcooktty != NULL) |
1da177e4 LT |
1401 | stli_flushchars(stli_txcooktty); |
1402 | stli_txcooktty = tty; | |
1403 | } | |
1404 | ||
1405 | stli_txcookbuf[stli_txcooksize++] = ch; | |
1406 | } | |
1407 | ||
1408 | /*****************************************************************************/ | |
1409 | ||
1410 | /* | |
1411 | * Transfer characters from the local TX cooking buffer to the board. | |
1412 | * We sort of ignore the tty that gets passed in here. We rely on the | |
1413 | * info stored with the TX cook buffer to tell us which port to flush | |
1414 | * the data on. In any case we clean out the TX cook buffer, for re-use | |
1415 | * by someone else. | |
1416 | */ | |
1417 | ||
1418 | static void stli_flushchars(struct tty_struct *tty) | |
1419 | { | |
4ac4360b AC |
1420 | cdkhdr_t __iomem *hdrp; |
1421 | unsigned char __iomem *bits; | |
1422 | cdkasy_t __iomem *ap; | |
1423 | struct tty_struct *cooktty; | |
1f8ec435 JS |
1424 | struct stliport *portp; |
1425 | struct stlibrd *brdp; | |
4ac4360b AC |
1426 | unsigned int len, stlen, head, tail, size, count, cooksize; |
1427 | unsigned char *buf; | |
1428 | unsigned char __iomem *shbuf; | |
1429 | unsigned long flags; | |
1da177e4 LT |
1430 | |
1431 | cooksize = stli_txcooksize; | |
1432 | cooktty = stli_txcooktty; | |
1433 | stli_txcooksize = 0; | |
1434 | stli_txcookrealsize = 0; | |
4ac4360b | 1435 | stli_txcooktty = NULL; |
1da177e4 | 1436 | |
4ac4360b | 1437 | if (tty == NULL) |
1da177e4 | 1438 | return; |
4ac4360b | 1439 | if (cooktty == NULL) |
1da177e4 LT |
1440 | return; |
1441 | if (tty != cooktty) | |
1442 | tty = cooktty; | |
1443 | if (cooksize == 0) | |
1444 | return; | |
1445 | ||
1446 | portp = tty->driver_data; | |
4ac4360b | 1447 | if (portp == NULL) |
1da177e4 | 1448 | return; |
1328d737 | 1449 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1450 | return; |
1451 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1452 | if (brdp == NULL) |
1da177e4 LT |
1453 | return; |
1454 | ||
4ac4360b | 1455 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
1456 | EBRDENABLE(brdp); |
1457 | ||
4ac4360b AC |
1458 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1459 | head = (unsigned int) readw(&ap->txq.head); | |
1460 | tail = (unsigned int) readw(&ap->txq.tail); | |
1461 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1462 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1463 | size = portp->txsize; |
1464 | if (head >= tail) { | |
1465 | len = size - (head - tail) - 1; | |
1466 | stlen = size - head; | |
1467 | } else { | |
1468 | len = tail - head - 1; | |
1469 | stlen = len; | |
1470 | } | |
1471 | ||
a3f8d9d5 | 1472 | len = min(len, cooksize); |
1da177e4 | 1473 | count = 0; |
29756fa3 | 1474 | shbuf = EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1475 | buf = stli_txcookbuf; |
1476 | ||
1477 | while (len > 0) { | |
a3f8d9d5 | 1478 | stlen = min(len, stlen); |
4ac4360b | 1479 | memcpy_toio(shbuf + head, buf, stlen); |
1da177e4 LT |
1480 | buf += stlen; |
1481 | len -= stlen; | |
1482 | count += stlen; | |
1483 | head += stlen; | |
1484 | if (head >= size) { | |
1485 | head = 0; | |
1486 | stlen = tail; | |
1487 | } | |
1488 | } | |
1489 | ||
4ac4360b AC |
1490 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1491 | writew(head, &ap->txq.head); | |
1da177e4 LT |
1492 | |
1493 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
4ac4360b AC |
1494 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1495 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1496 | } |
4ac4360b AC |
1497 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1498 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1499 | portp->portidx; |
4ac4360b | 1500 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1501 | set_bit(ST_TXBUSY, &portp->state); |
1502 | ||
1503 | EBRDDISABLE(brdp); | |
4ac4360b | 1504 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1505 | } |
1506 | ||
1507 | /*****************************************************************************/ | |
1508 | ||
1509 | static int stli_writeroom(struct tty_struct *tty) | |
1510 | { | |
4ac4360b | 1511 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1512 | struct stliport *portp; |
1513 | struct stlibrd *brdp; | |
4ac4360b AC |
1514 | unsigned int head, tail, len; |
1515 | unsigned long flags; | |
1da177e4 | 1516 | |
1da177e4 LT |
1517 | if (tty == stli_txcooktty) { |
1518 | if (stli_txcookrealsize != 0) { | |
1519 | len = stli_txcookrealsize - stli_txcooksize; | |
4ac4360b | 1520 | return len; |
1da177e4 LT |
1521 | } |
1522 | } | |
1523 | ||
1524 | portp = tty->driver_data; | |
4ac4360b AC |
1525 | if (portp == NULL) |
1526 | return 0; | |
1328d737 | 1527 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1528 | return 0; |
1da177e4 | 1529 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1530 | if (brdp == NULL) |
1531 | return 0; | |
1da177e4 | 1532 | |
4ac4360b | 1533 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1534 | EBRDENABLE(brdp); |
4ac4360b AC |
1535 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1536 | head = (unsigned int) readw(&rp->head); | |
1537 | tail = (unsigned int) readw(&rp->tail); | |
1538 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1539 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1540 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); |
1541 | len--; | |
1542 | EBRDDISABLE(brdp); | |
4ac4360b | 1543 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1544 | |
1545 | if (tty == stli_txcooktty) { | |
1546 | stli_txcookrealsize = len; | |
1547 | len -= stli_txcooksize; | |
1548 | } | |
4ac4360b | 1549 | return len; |
1da177e4 LT |
1550 | } |
1551 | ||
1552 | /*****************************************************************************/ | |
1553 | ||
1554 | /* | |
1555 | * Return the number of characters in the transmit buffer. Normally we | |
1556 | * will return the number of chars in the shared memory ring queue. | |
1557 | * We need to kludge around the case where the shared memory buffer is | |
1558 | * empty but not all characters have drained yet, for this case just | |
1559 | * return that there is 1 character in the buffer! | |
1560 | */ | |
1561 | ||
1562 | static int stli_charsinbuffer(struct tty_struct *tty) | |
1563 | { | |
4ac4360b | 1564 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1565 | struct stliport *portp; |
1566 | struct stlibrd *brdp; | |
4ac4360b AC |
1567 | unsigned int head, tail, len; |
1568 | unsigned long flags; | |
1da177e4 | 1569 | |
1da177e4 LT |
1570 | if (tty == stli_txcooktty) |
1571 | stli_flushchars(tty); | |
1572 | portp = tty->driver_data; | |
4ac4360b AC |
1573 | if (portp == NULL) |
1574 | return 0; | |
1328d737 | 1575 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1576 | return 0; |
1da177e4 | 1577 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1578 | if (brdp == NULL) |
1579 | return 0; | |
1da177e4 | 1580 | |
4ac4360b | 1581 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1582 | EBRDENABLE(brdp); |
4ac4360b AC |
1583 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1584 | head = (unsigned int) readw(&rp->head); | |
1585 | tail = (unsigned int) readw(&rp->tail); | |
1586 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1587 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1588 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); |
1589 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) | |
1590 | len = 1; | |
1591 | EBRDDISABLE(brdp); | |
4ac4360b | 1592 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 | 1593 | |
4ac4360b | 1594 | return len; |
1da177e4 LT |
1595 | } |
1596 | ||
1597 | /*****************************************************************************/ | |
1598 | ||
1599 | /* | |
1600 | * Generate the serial struct info. | |
1601 | */ | |
1602 | ||
1f8ec435 | 1603 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp) |
1da177e4 | 1604 | { |
4ac4360b | 1605 | struct serial_struct sio; |
1f8ec435 | 1606 | struct stlibrd *brdp; |
1da177e4 LT |
1607 | |
1608 | memset(&sio, 0, sizeof(struct serial_struct)); | |
1609 | sio.type = PORT_UNKNOWN; | |
1610 | sio.line = portp->portnr; | |
1611 | sio.irq = 0; | |
1612 | sio.flags = portp->flags; | |
1613 | sio.baud_base = portp->baud_base; | |
1614 | sio.close_delay = portp->close_delay; | |
1615 | sio.closing_wait = portp->closing_wait; | |
1616 | sio.custom_divisor = portp->custom_divisor; | |
1617 | sio.xmit_fifo_size = 0; | |
1618 | sio.hub6 = 0; | |
1619 | ||
1620 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1621 | if (brdp != NULL) |
1da177e4 LT |
1622 | sio.port = brdp->iobase; |
1623 | ||
1624 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? | |
1625 | -EFAULT : 0; | |
1626 | } | |
1627 | ||
1628 | /*****************************************************************************/ | |
1629 | ||
1630 | /* | |
1631 | * Set port according to the serial struct info. | |
1632 | * At this point we do not do any auto-configure stuff, so we will | |
1633 | * just quietly ignore any requests to change irq, etc. | |
1634 | */ | |
1635 | ||
1f8ec435 | 1636 | static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp) |
1da177e4 | 1637 | { |
4ac4360b AC |
1638 | struct serial_struct sio; |
1639 | int rc; | |
1da177e4 LT |
1640 | |
1641 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) | |
1642 | return -EFAULT; | |
1643 | if (!capable(CAP_SYS_ADMIN)) { | |
1644 | if ((sio.baud_base != portp->baud_base) || | |
1645 | (sio.close_delay != portp->close_delay) || | |
1646 | ((sio.flags & ~ASYNC_USR_MASK) != | |
1647 | (portp->flags & ~ASYNC_USR_MASK))) | |
4ac4360b | 1648 | return -EPERM; |
1da177e4 LT |
1649 | } |
1650 | ||
1651 | portp->flags = (portp->flags & ~ASYNC_USR_MASK) | | |
1652 | (sio.flags & ASYNC_USR_MASK); | |
1653 | portp->baud_base = sio.baud_base; | |
1654 | portp->close_delay = sio.close_delay; | |
1655 | portp->closing_wait = sio.closing_wait; | |
1656 | portp->custom_divisor = sio.custom_divisor; | |
1657 | ||
1658 | if ((rc = stli_setport(portp)) < 0) | |
4ac4360b AC |
1659 | return rc; |
1660 | return 0; | |
1da177e4 LT |
1661 | } |
1662 | ||
1663 | /*****************************************************************************/ | |
1664 | ||
1665 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) | |
1666 | { | |
1f8ec435 JS |
1667 | struct stliport *portp = tty->driver_data; |
1668 | struct stlibrd *brdp; | |
1da177e4 LT |
1669 | int rc; |
1670 | ||
4ac4360b AC |
1671 | if (portp == NULL) |
1672 | return -ENODEV; | |
1328d737 | 1673 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1674 | return 0; |
1da177e4 | 1675 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1676 | if (brdp == NULL) |
1677 | return 0; | |
1da177e4 | 1678 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1679 | return -EIO; |
1da177e4 LT |
1680 | |
1681 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, | |
1682 | &portp->asig, sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1683 | return rc; |
1da177e4 LT |
1684 | |
1685 | return stli_mktiocm(portp->asig.sigvalue); | |
1686 | } | |
1687 | ||
1688 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, | |
1689 | unsigned int set, unsigned int clear) | |
1690 | { | |
1f8ec435 JS |
1691 | struct stliport *portp = tty->driver_data; |
1692 | struct stlibrd *brdp; | |
1da177e4 LT |
1693 | int rts = -1, dtr = -1; |
1694 | ||
4ac4360b AC |
1695 | if (portp == NULL) |
1696 | return -ENODEV; | |
1328d737 | 1697 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1698 | return 0; |
1da177e4 | 1699 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1700 | if (brdp == NULL) |
1701 | return 0; | |
1da177e4 | 1702 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1703 | return -EIO; |
1da177e4 LT |
1704 | |
1705 | if (set & TIOCM_RTS) | |
1706 | rts = 1; | |
1707 | if (set & TIOCM_DTR) | |
1708 | dtr = 1; | |
1709 | if (clear & TIOCM_RTS) | |
1710 | rts = 0; | |
1711 | if (clear & TIOCM_DTR) | |
1712 | dtr = 0; | |
1713 | ||
1714 | stli_mkasysigs(&portp->asig, dtr, rts); | |
1715 | ||
1716 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1717 | sizeof(asysigs_t), 0); | |
1718 | } | |
1719 | ||
1720 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1721 | { | |
1f8ec435 JS |
1722 | struct stliport *portp; |
1723 | struct stlibrd *brdp; | |
4ac4360b AC |
1724 | unsigned int ival; |
1725 | int rc; | |
1da177e4 LT |
1726 | void __user *argp = (void __user *)arg; |
1727 | ||
1da177e4 | 1728 | portp = tty->driver_data; |
4ac4360b AC |
1729 | if (portp == NULL) |
1730 | return -ENODEV; | |
1328d737 | 1731 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1732 | return 0; |
1da177e4 | 1733 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1734 | if (brdp == NULL) |
1735 | return 0; | |
1da177e4 LT |
1736 | |
1737 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && | |
1738 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { | |
1739 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
4ac4360b | 1740 | return -EIO; |
1da177e4 LT |
1741 | } |
1742 | ||
1743 | rc = 0; | |
1744 | ||
1745 | switch (cmd) { | |
1746 | case TIOCGSOFTCAR: | |
1747 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), | |
1748 | (unsigned __user *) arg); | |
1749 | break; | |
1750 | case TIOCSSOFTCAR: | |
1751 | if ((rc = get_user(ival, (unsigned __user *) arg)) == 0) | |
1752 | tty->termios->c_cflag = | |
1753 | (tty->termios->c_cflag & ~CLOCAL) | | |
1754 | (ival ? CLOCAL : 0); | |
1755 | break; | |
1756 | case TIOCGSERIAL: | |
1757 | rc = stli_getserial(portp, argp); | |
1758 | break; | |
1759 | case TIOCSSERIAL: | |
1760 | rc = stli_setserial(portp, argp); | |
1761 | break; | |
1762 | case STL_GETPFLAG: | |
1763 | rc = put_user(portp->pflag, (unsigned __user *)argp); | |
1764 | break; | |
1765 | case STL_SETPFLAG: | |
1766 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) | |
1767 | stli_setport(portp); | |
1768 | break; | |
1769 | case COM_GETPORTSTATS: | |
1770 | rc = stli_getportstats(portp, argp); | |
1771 | break; | |
1772 | case COM_CLRPORTSTATS: | |
1773 | rc = stli_clrportstats(portp, argp); | |
1774 | break; | |
1775 | case TIOCSERCONFIG: | |
1776 | case TIOCSERGWILD: | |
1777 | case TIOCSERSWILD: | |
1778 | case TIOCSERGETLSR: | |
1779 | case TIOCSERGSTRUCT: | |
1780 | case TIOCSERGETMULTI: | |
1781 | case TIOCSERSETMULTI: | |
1782 | default: | |
1783 | rc = -ENOIOCTLCMD; | |
1784 | break; | |
1785 | } | |
1786 | ||
4ac4360b | 1787 | return rc; |
1da177e4 LT |
1788 | } |
1789 | ||
1790 | /*****************************************************************************/ | |
1791 | ||
1792 | /* | |
1793 | * This routine assumes that we have user context and can sleep. | |
1794 | * Looks like it is true for the current ttys implementation..!! | |
1795 | */ | |
1796 | ||
606d099c | 1797 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old) |
1da177e4 | 1798 | { |
1f8ec435 JS |
1799 | struct stliport *portp; |
1800 | struct stlibrd *brdp; | |
606d099c | 1801 | struct ktermios *tiosp; |
4ac4360b | 1802 | asyport_t aport; |
1da177e4 | 1803 | |
4ac4360b | 1804 | if (tty == NULL) |
1da177e4 LT |
1805 | return; |
1806 | portp = tty->driver_data; | |
4ac4360b | 1807 | if (portp == NULL) |
1da177e4 | 1808 | return; |
1328d737 | 1809 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1810 | return; |
1811 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1812 | if (brdp == NULL) |
1da177e4 LT |
1813 | return; |
1814 | ||
1815 | tiosp = tty->termios; | |
1816 | if ((tiosp->c_cflag == old->c_cflag) && | |
1817 | (tiosp->c_iflag == old->c_iflag)) | |
1818 | return; | |
1819 | ||
1820 | stli_mkasyport(portp, &aport, tiosp); | |
1821 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); | |
1822 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); | |
1823 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1824 | sizeof(asysigs_t), 0); | |
1825 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) | |
1826 | tty->hw_stopped = 0; | |
1827 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) | |
1828 | wake_up_interruptible(&portp->open_wait); | |
1829 | } | |
1830 | ||
1831 | /*****************************************************************************/ | |
1832 | ||
1833 | /* | |
1834 | * Attempt to flow control who ever is sending us data. We won't really | |
1835 | * do any flow control action here. We can't directly, and even if we | |
1836 | * wanted to we would have to send a command to the slave. The slave | |
1837 | * knows how to flow control, and will do so when its buffers reach its | |
1838 | * internal high water marks. So what we will do is set a local state | |
1839 | * bit that will stop us sending any RX data up from the poll routine | |
1840 | * (which is the place where RX data from the slave is handled). | |
1841 | */ | |
1842 | ||
1843 | static void stli_throttle(struct tty_struct *tty) | |
1844 | { | |
1f8ec435 | 1845 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1846 | if (portp == NULL) |
1da177e4 | 1847 | return; |
1da177e4 LT |
1848 | set_bit(ST_RXSTOP, &portp->state); |
1849 | } | |
1850 | ||
1851 | /*****************************************************************************/ | |
1852 | ||
1853 | /* | |
1854 | * Unflow control the device sending us data... That means that all | |
1855 | * we have to do is clear the RXSTOP state bit. The next poll call | |
1856 | * will then be able to pass the RX data back up. | |
1857 | */ | |
1858 | ||
1859 | static void stli_unthrottle(struct tty_struct *tty) | |
1860 | { | |
1f8ec435 | 1861 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1862 | if (portp == NULL) |
1da177e4 | 1863 | return; |
1da177e4 LT |
1864 | clear_bit(ST_RXSTOP, &portp->state); |
1865 | } | |
1866 | ||
1867 | /*****************************************************************************/ | |
1868 | ||
1869 | /* | |
4ac4360b | 1870 | * Stop the transmitter. |
1da177e4 LT |
1871 | */ |
1872 | ||
1873 | static void stli_stop(struct tty_struct *tty) | |
1874 | { | |
1da177e4 LT |
1875 | } |
1876 | ||
1877 | /*****************************************************************************/ | |
1878 | ||
1879 | /* | |
4ac4360b | 1880 | * Start the transmitter again. |
1da177e4 LT |
1881 | */ |
1882 | ||
1883 | static void stli_start(struct tty_struct *tty) | |
1884 | { | |
1da177e4 LT |
1885 | } |
1886 | ||
1887 | /*****************************************************************************/ | |
1888 | ||
1889 | /* | |
1890 | * Scheduler called hang up routine. This is called from the scheduler, | |
1891 | * not direct from the driver "poll" routine. We can't call it there | |
1892 | * since the real local hangup code will enable/disable the board and | |
1893 | * other things that we can't do while handling the poll. Much easier | |
1894 | * to deal with it some time later (don't really care when, hangups | |
1895 | * aren't that time critical). | |
1896 | */ | |
1897 | ||
3e577a80 | 1898 | static void stli_dohangup(struct work_struct *ugly_api) |
1da177e4 | 1899 | { |
1f8ec435 | 1900 | struct stliport *portp = container_of(ugly_api, struct stliport, tqhangup); |
4ac4360b AC |
1901 | if (portp->tty != NULL) { |
1902 | tty_hangup(portp->tty); | |
1da177e4 LT |
1903 | } |
1904 | } | |
1905 | ||
1906 | /*****************************************************************************/ | |
1907 | ||
1908 | /* | |
1909 | * Hangup this port. This is pretty much like closing the port, only | |
1910 | * a little more brutal. No waiting for data to drain. Shutdown the | |
1911 | * port and maybe drop signals. This is rather tricky really. We want | |
1912 | * to close the port as well. | |
1913 | */ | |
1914 | ||
1915 | static void stli_hangup(struct tty_struct *tty) | |
1916 | { | |
1f8ec435 JS |
1917 | struct stliport *portp; |
1918 | struct stlibrd *brdp; | |
4ac4360b | 1919 | unsigned long flags; |
1da177e4 | 1920 | |
1da177e4 | 1921 | portp = tty->driver_data; |
4ac4360b | 1922 | if (portp == NULL) |
1da177e4 | 1923 | return; |
1328d737 | 1924 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1925 | return; |
1926 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1927 | if (brdp == NULL) |
1da177e4 LT |
1928 | return; |
1929 | ||
1930 | portp->flags &= ~ASYNC_INITIALIZED; | |
1931 | ||
4ac4360b | 1932 | if (!test_bit(ST_CLOSING, &portp->state)) |
1da177e4 | 1933 | stli_rawclose(brdp, portp, 0, 0); |
4ac4360b AC |
1934 | |
1935 | spin_lock_irqsave(&stli_lock, flags); | |
1da177e4 LT |
1936 | if (tty->termios->c_cflag & HUPCL) { |
1937 | stli_mkasysigs(&portp->asig, 0, 0); | |
1938 | if (test_bit(ST_CMDING, &portp->state)) { | |
1939 | set_bit(ST_DOSIGS, &portp->state); | |
1940 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1941 | set_bit(ST_DOFLUSHRX, &portp->state); | |
1942 | } else { | |
1943 | stli_sendcmd(brdp, portp, A_SETSIGNALSF, | |
1944 | &portp->asig, sizeof(asysigs_t), 0); | |
1945 | } | |
1946 | } | |
1da177e4 LT |
1947 | |
1948 | clear_bit(ST_TXBUSY, &portp->state); | |
1949 | clear_bit(ST_RXSTOP, &portp->state); | |
1950 | set_bit(TTY_IO_ERROR, &tty->flags); | |
4ac4360b | 1951 | portp->tty = NULL; |
1da177e4 LT |
1952 | portp->flags &= ~ASYNC_NORMAL_ACTIVE; |
1953 | portp->refcount = 0; | |
4ac4360b AC |
1954 | spin_unlock_irqrestore(&stli_lock, flags); |
1955 | ||
1da177e4 LT |
1956 | wake_up_interruptible(&portp->open_wait); |
1957 | } | |
1958 | ||
1959 | /*****************************************************************************/ | |
1960 | ||
1961 | /* | |
1962 | * Flush characters from the lower buffer. We may not have user context | |
1963 | * so we cannot sleep waiting for it to complete. Also we need to check | |
1964 | * if there is chars for this port in the TX cook buffer, and flush them | |
1965 | * as well. | |
1966 | */ | |
1967 | ||
1968 | static void stli_flushbuffer(struct tty_struct *tty) | |
1969 | { | |
1f8ec435 JS |
1970 | struct stliport *portp; |
1971 | struct stlibrd *brdp; | |
4ac4360b | 1972 | unsigned long ftype, flags; |
1da177e4 | 1973 | |
1da177e4 | 1974 | portp = tty->driver_data; |
4ac4360b | 1975 | if (portp == NULL) |
1da177e4 | 1976 | return; |
1328d737 | 1977 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1978 | return; |
1979 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1980 | if (brdp == NULL) |
1da177e4 LT |
1981 | return; |
1982 | ||
4ac4360b | 1983 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1984 | if (tty == stli_txcooktty) { |
4ac4360b | 1985 | stli_txcooktty = NULL; |
1da177e4 LT |
1986 | stli_txcooksize = 0; |
1987 | stli_txcookrealsize = 0; | |
1988 | } | |
1989 | if (test_bit(ST_CMDING, &portp->state)) { | |
1990 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1991 | } else { | |
1992 | ftype = FLUSHTX; | |
1993 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { | |
1994 | ftype |= FLUSHRX; | |
1995 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
1996 | } | |
4ac4360b | 1997 | __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); |
1da177e4 | 1998 | } |
4ac4360b AC |
1999 | spin_unlock_irqrestore(&brd_lock, flags); |
2000 | tty_wakeup(tty); | |
1da177e4 LT |
2001 | } |
2002 | ||
2003 | /*****************************************************************************/ | |
2004 | ||
2005 | static void stli_breakctl(struct tty_struct *tty, int state) | |
2006 | { | |
1f8ec435 JS |
2007 | struct stlibrd *brdp; |
2008 | struct stliport *portp; | |
1da177e4 | 2009 | long arg; |
1da177e4 | 2010 | |
1da177e4 | 2011 | portp = tty->driver_data; |
4ac4360b | 2012 | if (portp == NULL) |
1da177e4 | 2013 | return; |
1328d737 | 2014 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
2015 | return; |
2016 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 2017 | if (brdp == NULL) |
1da177e4 LT |
2018 | return; |
2019 | ||
1da177e4 LT |
2020 | arg = (state == -1) ? BREAKON : BREAKOFF; |
2021 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); | |
1da177e4 LT |
2022 | } |
2023 | ||
2024 | /*****************************************************************************/ | |
2025 | ||
2026 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) | |
2027 | { | |
1f8ec435 | 2028 | struct stliport *portp; |
4ac4360b | 2029 | unsigned long tend; |
1da177e4 | 2030 | |
4ac4360b | 2031 | if (tty == NULL) |
1da177e4 LT |
2032 | return; |
2033 | portp = tty->driver_data; | |
4ac4360b | 2034 | if (portp == NULL) |
1da177e4 LT |
2035 | return; |
2036 | ||
2037 | if (timeout == 0) | |
2038 | timeout = HZ; | |
2039 | tend = jiffies + timeout; | |
2040 | ||
2041 | while (test_bit(ST_TXBUSY, &portp->state)) { | |
2042 | if (signal_pending(current)) | |
2043 | break; | |
2044 | msleep_interruptible(20); | |
2045 | if (time_after_eq(jiffies, tend)) | |
2046 | break; | |
2047 | } | |
2048 | } | |
2049 | ||
2050 | /*****************************************************************************/ | |
2051 | ||
2052 | static void stli_sendxchar(struct tty_struct *tty, char ch) | |
2053 | { | |
1f8ec435 JS |
2054 | struct stlibrd *brdp; |
2055 | struct stliport *portp; | |
1da177e4 LT |
2056 | asyctrl_t actrl; |
2057 | ||
1da177e4 | 2058 | portp = tty->driver_data; |
4ac4360b | 2059 | if (portp == NULL) |
1da177e4 | 2060 | return; |
1328d737 | 2061 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
2062 | return; |
2063 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 2064 | if (brdp == NULL) |
1da177e4 LT |
2065 | return; |
2066 | ||
2067 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
2068 | if (ch == STOP_CHAR(tty)) { | |
2069 | actrl.rxctrl = CT_STOPFLOW; | |
2070 | } else if (ch == START_CHAR(tty)) { | |
2071 | actrl.rxctrl = CT_STARTFLOW; | |
2072 | } else { | |
2073 | actrl.txctrl = CT_SENDCHR; | |
2074 | actrl.tximdch = ch; | |
2075 | } | |
1da177e4 LT |
2076 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
2077 | } | |
2078 | ||
2079 | /*****************************************************************************/ | |
2080 | ||
2081 | #define MAXLINE 80 | |
2082 | ||
2083 | /* | |
2084 | * Format info for a specified port. The line is deliberately limited | |
2085 | * to 80 characters. (If it is too long it will be truncated, if too | |
2086 | * short then padded with spaces). | |
2087 | */ | |
2088 | ||
1f8ec435 | 2089 | static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos) |
1da177e4 | 2090 | { |
4ac4360b AC |
2091 | char *sp, *uart; |
2092 | int rc, cnt; | |
1da177e4 LT |
2093 | |
2094 | rc = stli_portcmdstats(portp); | |
2095 | ||
2096 | uart = "UNKNOWN"; | |
2097 | if (brdp->state & BST_STARTED) { | |
2098 | switch (stli_comstats.hwid) { | |
4ac4360b AC |
2099 | case 0: uart = "2681"; break; |
2100 | case 1: uart = "SC26198"; break; | |
2101 | default:uart = "CD1400"; break; | |
1da177e4 LT |
2102 | } |
2103 | } | |
2104 | ||
2105 | sp = pos; | |
2106 | sp += sprintf(sp, "%d: uart:%s ", portnr, uart); | |
2107 | ||
2108 | if ((brdp->state & BST_STARTED) && (rc >= 0)) { | |
2109 | sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal, | |
2110 | (int) stli_comstats.rxtotal); | |
2111 | ||
2112 | if (stli_comstats.rxframing) | |
2113 | sp += sprintf(sp, " fe:%d", | |
2114 | (int) stli_comstats.rxframing); | |
2115 | if (stli_comstats.rxparity) | |
2116 | sp += sprintf(sp, " pe:%d", | |
2117 | (int) stli_comstats.rxparity); | |
2118 | if (stli_comstats.rxbreaks) | |
2119 | sp += sprintf(sp, " brk:%d", | |
2120 | (int) stli_comstats.rxbreaks); | |
2121 | if (stli_comstats.rxoverrun) | |
2122 | sp += sprintf(sp, " oe:%d", | |
2123 | (int) stli_comstats.rxoverrun); | |
2124 | ||
2125 | cnt = sprintf(sp, "%s%s%s%s%s ", | |
2126 | (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "", | |
2127 | (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "", | |
2128 | (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "", | |
2129 | (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "", | |
2130 | (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : ""); | |
2131 | *sp = ' '; | |
2132 | sp += cnt; | |
2133 | } | |
2134 | ||
2135 | for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++) | |
2136 | *sp++ = ' '; | |
2137 | if (cnt >= MAXLINE) | |
2138 | pos[(MAXLINE - 2)] = '+'; | |
2139 | pos[(MAXLINE - 1)] = '\n'; | |
2140 | ||
2141 | return(MAXLINE); | |
2142 | } | |
2143 | ||
2144 | /*****************************************************************************/ | |
2145 | ||
2146 | /* | |
2147 | * Port info, read from the /proc file system. | |
2148 | */ | |
2149 | ||
2150 | static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data) | |
2151 | { | |
1f8ec435 JS |
2152 | struct stlibrd *brdp; |
2153 | struct stliport *portp; | |
1328d737 | 2154 | unsigned int brdnr, portnr, totalport; |
4ac4360b AC |
2155 | int curoff, maxoff; |
2156 | char *pos; | |
1da177e4 LT |
2157 | |
2158 | pos = page; | |
2159 | totalport = 0; | |
2160 | curoff = 0; | |
2161 | ||
2162 | if (off == 0) { | |
2163 | pos += sprintf(pos, "%s: version %s", stli_drvtitle, | |
2164 | stli_drvversion); | |
2165 | while (pos < (page + MAXLINE - 1)) | |
2166 | *pos++ = ' '; | |
2167 | *pos++ = '\n'; | |
2168 | } | |
2169 | curoff = MAXLINE; | |
2170 | ||
2171 | /* | |
2172 | * We scan through for each board, panel and port. The offset is | |
2173 | * calculated on the fly, and irrelevant ports are skipped. | |
2174 | */ | |
2175 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2176 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2177 | if (brdp == NULL) |
1da177e4 LT |
2178 | continue; |
2179 | if (brdp->state == 0) | |
2180 | continue; | |
2181 | ||
2182 | maxoff = curoff + (brdp->nrports * MAXLINE); | |
2183 | if (off >= maxoff) { | |
2184 | curoff = maxoff; | |
2185 | continue; | |
2186 | } | |
2187 | ||
2188 | totalport = brdnr * STL_MAXPORTS; | |
2189 | for (portnr = 0; (portnr < brdp->nrports); portnr++, | |
2190 | totalport++) { | |
2191 | portp = brdp->ports[portnr]; | |
4ac4360b | 2192 | if (portp == NULL) |
1da177e4 LT |
2193 | continue; |
2194 | if (off >= (curoff += MAXLINE)) | |
2195 | continue; | |
2196 | if ((pos - page + MAXLINE) > count) | |
2197 | goto stli_readdone; | |
2198 | pos += stli_portinfo(brdp, portp, totalport, pos); | |
2199 | } | |
2200 | } | |
2201 | ||
2202 | *eof = 1; | |
2203 | ||
2204 | stli_readdone: | |
2205 | *start = page; | |
2206 | return(pos - page); | |
2207 | } | |
2208 | ||
2209 | /*****************************************************************************/ | |
2210 | ||
2211 | /* | |
2212 | * Generic send command routine. This will send a message to the slave, | |
2213 | * of the specified type with the specified argument. Must be very | |
2214 | * careful of data that will be copied out from shared memory - | |
2215 | * containing command results. The command completion is all done from | |
2216 | * a poll routine that does not have user context. Therefore you cannot | |
2217 | * copy back directly into user space, or to the kernel stack of a | |
2218 | * process. This routine does not sleep, so can be called from anywhere. | |
4ac4360b AC |
2219 | * |
2220 | * The caller must hold the brd_lock (see also stli_sendcmd the usual | |
2221 | * entry point) | |
1da177e4 LT |
2222 | */ |
2223 | ||
1f8ec435 | 2224 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 2225 | { |
4ac4360b AC |
2226 | cdkhdr_t __iomem *hdrp; |
2227 | cdkctrl_t __iomem *cp; | |
2228 | unsigned char __iomem *bits; | |
2229 | unsigned long flags; | |
1da177e4 | 2230 | |
4ac4360b | 2231 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
2232 | |
2233 | if (test_bit(ST_CMDING, &portp->state)) { | |
2234 | printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n", | |
2235 | (int) cmd); | |
4ac4360b | 2236 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
2237 | return; |
2238 | } | |
2239 | ||
2240 | EBRDENABLE(brdp); | |
4ac4360b | 2241 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1da177e4 | 2242 | if (size > 0) { |
4ac4360b | 2243 | memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); |
1da177e4 LT |
2244 | if (copyback) { |
2245 | portp->argp = arg; | |
2246 | portp->argsize = size; | |
2247 | } | |
2248 | } | |
4ac4360b AC |
2249 | writel(0, &cp->status); |
2250 | writel(cmd, &cp->cmd); | |
2251 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
2252 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 2253 | portp->portidx; |
4ac4360b | 2254 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
2255 | set_bit(ST_CMDING, &portp->state); |
2256 | EBRDDISABLE(brdp); | |
4ac4360b AC |
2257 | spin_unlock_irqrestore(&brd_lock, flags); |
2258 | } | |
2259 | ||
1f8ec435 | 2260 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
4ac4360b AC |
2261 | { |
2262 | unsigned long flags; | |
2263 | ||
2264 | spin_lock_irqsave(&brd_lock, flags); | |
2265 | __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
2266 | spin_unlock_irqrestore(&brd_lock, flags); | |
1da177e4 LT |
2267 | } |
2268 | ||
2269 | /*****************************************************************************/ | |
2270 | ||
2271 | /* | |
2272 | * Read data from shared memory. This assumes that the shared memory | |
2273 | * is enabled and that interrupts are off. Basically we just empty out | |
2274 | * the shared memory buffer into the tty buffer. Must be careful to | |
2275 | * handle the case where we fill up the tty buffer, but still have | |
2276 | * more chars to unload. | |
2277 | */ | |
2278 | ||
1f8ec435 | 2279 | static void stli_read(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2280 | { |
4ac4360b AC |
2281 | cdkasyrq_t __iomem *rp; |
2282 | char __iomem *shbuf; | |
1da177e4 | 2283 | struct tty_struct *tty; |
4ac4360b AC |
2284 | unsigned int head, tail, size; |
2285 | unsigned int len, stlen; | |
1da177e4 LT |
2286 | |
2287 | if (test_bit(ST_RXSTOP, &portp->state)) | |
2288 | return; | |
2289 | tty = portp->tty; | |
4ac4360b | 2290 | if (tty == NULL) |
1da177e4 LT |
2291 | return; |
2292 | ||
4ac4360b AC |
2293 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2294 | head = (unsigned int) readw(&rp->head); | |
2295 | if (head != ((unsigned int) readw(&rp->head))) | |
2296 | head = (unsigned int) readw(&rp->head); | |
2297 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
2298 | size = portp->rxsize; |
2299 | if (head >= tail) { | |
2300 | len = head - tail; | |
2301 | stlen = len; | |
2302 | } else { | |
2303 | len = size - (tail - head); | |
2304 | stlen = size - tail; | |
2305 | } | |
2306 | ||
33f0f88f | 2307 | len = tty_buffer_request_room(tty, len); |
4ac4360b AC |
2308 | |
2309 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); | |
1da177e4 LT |
2310 | |
2311 | while (len > 0) { | |
4ac4360b AC |
2312 | unsigned char *cptr; |
2313 | ||
a3f8d9d5 | 2314 | stlen = min(len, stlen); |
4ac4360b AC |
2315 | tty_prepare_flip_string(tty, &cptr, stlen); |
2316 | memcpy_fromio(cptr, shbuf + tail, stlen); | |
1da177e4 LT |
2317 | len -= stlen; |
2318 | tail += stlen; | |
2319 | if (tail >= size) { | |
2320 | tail = 0; | |
2321 | stlen = head; | |
2322 | } | |
2323 | } | |
4ac4360b AC |
2324 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2325 | writew(tail, &rp->tail); | |
1da177e4 LT |
2326 | |
2327 | if (head != tail) | |
2328 | set_bit(ST_RXING, &portp->state); | |
2329 | ||
2330 | tty_schedule_flip(tty); | |
2331 | } | |
2332 | ||
2333 | /*****************************************************************************/ | |
2334 | ||
2335 | /* | |
2336 | * Set up and carry out any delayed commands. There is only a small set | |
2337 | * of slave commands that can be done "off-level". So it is not too | |
2338 | * difficult to deal with them here. | |
2339 | */ | |
2340 | ||
1f8ec435 | 2341 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp) |
1da177e4 | 2342 | { |
4ac4360b | 2343 | int cmd; |
1da177e4 LT |
2344 | |
2345 | if (test_bit(ST_DOSIGS, &portp->state)) { | |
2346 | if (test_bit(ST_DOFLUSHTX, &portp->state) && | |
2347 | test_bit(ST_DOFLUSHRX, &portp->state)) | |
2348 | cmd = A_SETSIGNALSF; | |
2349 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) | |
2350 | cmd = A_SETSIGNALSFTX; | |
2351 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) | |
2352 | cmd = A_SETSIGNALSFRX; | |
2353 | else | |
2354 | cmd = A_SETSIGNALS; | |
2355 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2356 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2357 | clear_bit(ST_DOSIGS, &portp->state); | |
4ac4360b | 2358 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, |
1da177e4 | 2359 | sizeof(asysigs_t)); |
4ac4360b AC |
2360 | writel(0, &cp->status); |
2361 | writel(cmd, &cp->cmd); | |
1da177e4 LT |
2362 | set_bit(ST_CMDING, &portp->state); |
2363 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || | |
2364 | test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2365 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); | |
2366 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); | |
2367 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2368 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
4ac4360b AC |
2369 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); |
2370 | writel(0, &cp->status); | |
2371 | writel(A_FLUSH, &cp->cmd); | |
1da177e4 LT |
2372 | set_bit(ST_CMDING, &portp->state); |
2373 | } | |
2374 | } | |
2375 | ||
2376 | /*****************************************************************************/ | |
2377 | ||
2378 | /* | |
2379 | * Host command service checking. This handles commands or messages | |
2380 | * coming from the slave to the host. Must have board shared memory | |
2381 | * enabled and interrupts off when called. Notice that by servicing the | |
2382 | * read data last we don't need to change the shared memory pointer | |
2383 | * during processing (which is a slow IO operation). | |
2384 | * Return value indicates if this port is still awaiting actions from | |
2385 | * the slave (like open, command, or even TX data being sent). If 0 | |
2386 | * then port is still busy, otherwise no longer busy. | |
2387 | */ | |
2388 | ||
1f8ec435 | 2389 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2390 | { |
4ac4360b AC |
2391 | cdkasy_t __iomem *ap; |
2392 | cdkctrl_t __iomem *cp; | |
2393 | struct tty_struct *tty; | |
2394 | asynotify_t nt; | |
2395 | unsigned long oldsigs; | |
2396 | int rc, donerx; | |
2397 | ||
2398 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); | |
1da177e4 LT |
2399 | cp = &ap->ctrl; |
2400 | ||
2401 | /* | |
2402 | * Check if we are waiting for an open completion message. | |
2403 | */ | |
2404 | if (test_bit(ST_OPENING, &portp->state)) { | |
4ac4360b AC |
2405 | rc = readl(&cp->openarg); |
2406 | if (readb(&cp->open) == 0 && rc != 0) { | |
1da177e4 LT |
2407 | if (rc > 0) |
2408 | rc--; | |
4ac4360b | 2409 | writel(0, &cp->openarg); |
1da177e4 LT |
2410 | portp->rc = rc; |
2411 | clear_bit(ST_OPENING, &portp->state); | |
2412 | wake_up_interruptible(&portp->raw_wait); | |
2413 | } | |
2414 | } | |
2415 | ||
2416 | /* | |
2417 | * Check if we are waiting for a close completion message. | |
2418 | */ | |
2419 | if (test_bit(ST_CLOSING, &portp->state)) { | |
4ac4360b AC |
2420 | rc = (int) readl(&cp->closearg); |
2421 | if (readb(&cp->close) == 0 && rc != 0) { | |
1da177e4 LT |
2422 | if (rc > 0) |
2423 | rc--; | |
4ac4360b | 2424 | writel(0, &cp->closearg); |
1da177e4 LT |
2425 | portp->rc = rc; |
2426 | clear_bit(ST_CLOSING, &portp->state); | |
2427 | wake_up_interruptible(&portp->raw_wait); | |
2428 | } | |
2429 | } | |
2430 | ||
2431 | /* | |
2432 | * Check if we are waiting for a command completion message. We may | |
2433 | * need to copy out the command results associated with this command. | |
2434 | */ | |
2435 | if (test_bit(ST_CMDING, &portp->state)) { | |
4ac4360b AC |
2436 | rc = readl(&cp->status); |
2437 | if (readl(&cp->cmd) == 0 && rc != 0) { | |
1da177e4 LT |
2438 | if (rc > 0) |
2439 | rc--; | |
4ac4360b AC |
2440 | if (portp->argp != NULL) { |
2441 | memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), | |
1da177e4 | 2442 | portp->argsize); |
4ac4360b | 2443 | portp->argp = NULL; |
1da177e4 | 2444 | } |
4ac4360b | 2445 | writel(0, &cp->status); |
1da177e4 LT |
2446 | portp->rc = rc; |
2447 | clear_bit(ST_CMDING, &portp->state); | |
2448 | stli_dodelaycmd(portp, cp); | |
2449 | wake_up_interruptible(&portp->raw_wait); | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | /* | |
2454 | * Check for any notification messages ready. This includes lots of | |
2455 | * different types of events - RX chars ready, RX break received, | |
2456 | * TX data low or empty in the slave, modem signals changed state. | |
2457 | */ | |
2458 | donerx = 0; | |
2459 | ||
2460 | if (ap->notify) { | |
2461 | nt = ap->changed; | |
2462 | ap->notify = 0; | |
2463 | tty = portp->tty; | |
2464 | ||
2465 | if (nt.signal & SG_DCD) { | |
2466 | oldsigs = portp->sigs; | |
2467 | portp->sigs = stli_mktiocm(nt.sigvalue); | |
2468 | clear_bit(ST_GETSIGS, &portp->state); | |
2469 | if ((portp->sigs & TIOCM_CD) && | |
2470 | ((oldsigs & TIOCM_CD) == 0)) | |
2471 | wake_up_interruptible(&portp->open_wait); | |
2472 | if ((oldsigs & TIOCM_CD) && | |
2473 | ((portp->sigs & TIOCM_CD) == 0)) { | |
2474 | if (portp->flags & ASYNC_CHECK_CD) { | |
2475 | if (tty) | |
2476 | schedule_work(&portp->tqhangup); | |
2477 | } | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | if (nt.data & DT_TXEMPTY) | |
2482 | clear_bit(ST_TXBUSY, &portp->state); | |
2483 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { | |
4ac4360b AC |
2484 | if (tty != NULL) { |
2485 | tty_wakeup(tty); | |
2486 | EBRDENABLE(brdp); | |
1da177e4 LT |
2487 | wake_up_interruptible(&tty->write_wait); |
2488 | } | |
2489 | } | |
2490 | ||
2491 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { | |
4ac4360b | 2492 | if (tty != NULL) { |
33f0f88f AC |
2493 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
2494 | if (portp->flags & ASYNC_SAK) { | |
2495 | do_SAK(tty); | |
2496 | EBRDENABLE(brdp); | |
1da177e4 | 2497 | } |
33f0f88f | 2498 | tty_schedule_flip(tty); |
1da177e4 LT |
2499 | } |
2500 | } | |
2501 | ||
2502 | if (nt.data & DT_RXBUSY) { | |
2503 | donerx++; | |
2504 | stli_read(brdp, portp); | |
2505 | } | |
2506 | } | |
2507 | ||
2508 | /* | |
2509 | * It might seem odd that we are checking for more RX chars here. | |
2510 | * But, we need to handle the case where the tty buffer was previously | |
2511 | * filled, but we had more characters to pass up. The slave will not | |
2512 | * send any more RX notify messages until the RX buffer has been emptied. | |
2513 | * But it will leave the service bits on (since the buffer is not empty). | |
2514 | * So from here we can try to process more RX chars. | |
2515 | */ | |
2516 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { | |
2517 | clear_bit(ST_RXING, &portp->state); | |
2518 | stli_read(brdp, portp); | |
2519 | } | |
2520 | ||
2521 | return((test_bit(ST_OPENING, &portp->state) || | |
2522 | test_bit(ST_CLOSING, &portp->state) || | |
2523 | test_bit(ST_CMDING, &portp->state) || | |
2524 | test_bit(ST_TXBUSY, &portp->state) || | |
2525 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); | |
2526 | } | |
2527 | ||
2528 | /*****************************************************************************/ | |
2529 | ||
2530 | /* | |
2531 | * Service all ports on a particular board. Assumes that the boards | |
2532 | * shared memory is enabled, and that the page pointer is pointed | |
2533 | * at the cdk header structure. | |
2534 | */ | |
2535 | ||
1f8ec435 | 2536 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp) |
1da177e4 | 2537 | { |
1f8ec435 | 2538 | struct stliport *portp; |
4ac4360b AC |
2539 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; |
2540 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; | |
2541 | unsigned char __iomem *slavep; | |
2542 | int bitpos, bitat, bitsize; | |
2543 | int channr, nrdevs, slavebitchange; | |
1da177e4 LT |
2544 | |
2545 | bitsize = brdp->bitsize; | |
2546 | nrdevs = brdp->nrdevs; | |
2547 | ||
2548 | /* | |
2549 | * Check if slave wants any service. Basically we try to do as | |
2550 | * little work as possible here. There are 2 levels of service | |
2551 | * bits. So if there is nothing to do we bail early. We check | |
2552 | * 8 service bits at a time in the inner loop, so we can bypass | |
2553 | * the lot if none of them want service. | |
2554 | */ | |
4ac4360b | 2555 | memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), |
1da177e4 LT |
2556 | bitsize); |
2557 | ||
2558 | memset(&slavebits[0], 0, bitsize); | |
2559 | slavebitchange = 0; | |
2560 | ||
2561 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
2562 | if (hostbits[bitpos] == 0) | |
2563 | continue; | |
2564 | channr = bitpos * 8; | |
2565 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { | |
2566 | if (hostbits[bitpos] & bitat) { | |
2567 | portp = brdp->ports[(channr - 1)]; | |
2568 | if (stli_hostcmd(brdp, portp)) { | |
2569 | slavebitchange++; | |
2570 | slavebits[bitpos] |= bitat; | |
2571 | } | |
2572 | } | |
2573 | } | |
2574 | } | |
2575 | ||
2576 | /* | |
2577 | * If any of the ports are no longer busy then update them in the | |
2578 | * slave request bits. We need to do this after, since a host port | |
2579 | * service may initiate more slave requests. | |
2580 | */ | |
2581 | if (slavebitchange) { | |
4ac4360b AC |
2582 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2583 | slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; | |
1da177e4 | 2584 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
4ac4360b AC |
2585 | if (readb(slavebits + bitpos)) |
2586 | writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); | |
1da177e4 LT |
2587 | } |
2588 | } | |
2589 | } | |
2590 | ||
2591 | /*****************************************************************************/ | |
2592 | ||
2593 | /* | |
2594 | * Driver poll routine. This routine polls the boards in use and passes | |
2595 | * messages back up to host when necessary. This is actually very | |
2596 | * CPU efficient, since we will always have the kernel poll clock, it | |
2597 | * adds only a few cycles when idle (since board service can be | |
2598 | * determined very easily), but when loaded generates no interrupts | |
2599 | * (with their expensive associated context change). | |
2600 | */ | |
2601 | ||
2602 | static void stli_poll(unsigned long arg) | |
2603 | { | |
4ac4360b | 2604 | cdkhdr_t __iomem *hdrp; |
1f8ec435 | 2605 | struct stlibrd *brdp; |
1328d737 | 2606 | unsigned int brdnr; |
1da177e4 LT |
2607 | |
2608 | stli_timerlist.expires = STLI_TIMEOUT; | |
2609 | add_timer(&stli_timerlist); | |
2610 | ||
2611 | /* | |
2612 | * Check each board and do any servicing required. | |
2613 | */ | |
2614 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2615 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2616 | if (brdp == NULL) |
1da177e4 LT |
2617 | continue; |
2618 | if ((brdp->state & BST_STARTED) == 0) | |
2619 | continue; | |
2620 | ||
4ac4360b | 2621 | spin_lock(&brd_lock); |
1da177e4 | 2622 | EBRDENABLE(brdp); |
4ac4360b AC |
2623 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2624 | if (readb(&hdrp->hostreq)) | |
1da177e4 LT |
2625 | stli_brdpoll(brdp, hdrp); |
2626 | EBRDDISABLE(brdp); | |
4ac4360b | 2627 | spin_unlock(&brd_lock); |
1da177e4 LT |
2628 | } |
2629 | } | |
2630 | ||
2631 | /*****************************************************************************/ | |
2632 | ||
2633 | /* | |
2634 | * Translate the termios settings into the port setting structure of | |
2635 | * the slave. | |
2636 | */ | |
2637 | ||
1f8ec435 | 2638 | static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp) |
1da177e4 | 2639 | { |
1da177e4 LT |
2640 | memset(pp, 0, sizeof(asyport_t)); |
2641 | ||
2642 | /* | |
2643 | * Start of by setting the baud, char size, parity and stop bit info. | |
2644 | */ | |
1db27c11 | 2645 | pp->baudout = tty_get_baud_rate(portp->tty); |
1da177e4 LT |
2646 | if ((tiosp->c_cflag & CBAUD) == B38400) { |
2647 | if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
2648 | pp->baudout = 57600; | |
2649 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2650 | pp->baudout = 115200; | |
2651 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2652 | pp->baudout = 230400; | |
2653 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2654 | pp->baudout = 460800; | |
2655 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) | |
2656 | pp->baudout = (portp->baud_base / portp->custom_divisor); | |
2657 | } | |
2658 | if (pp->baudout > STL_MAXBAUD) | |
2659 | pp->baudout = STL_MAXBAUD; | |
2660 | pp->baudin = pp->baudout; | |
2661 | ||
2662 | switch (tiosp->c_cflag & CSIZE) { | |
2663 | case CS5: | |
2664 | pp->csize = 5; | |
2665 | break; | |
2666 | case CS6: | |
2667 | pp->csize = 6; | |
2668 | break; | |
2669 | case CS7: | |
2670 | pp->csize = 7; | |
2671 | break; | |
2672 | default: | |
2673 | pp->csize = 8; | |
2674 | break; | |
2675 | } | |
2676 | ||
2677 | if (tiosp->c_cflag & CSTOPB) | |
2678 | pp->stopbs = PT_STOP2; | |
2679 | else | |
2680 | pp->stopbs = PT_STOP1; | |
2681 | ||
2682 | if (tiosp->c_cflag & PARENB) { | |
2683 | if (tiosp->c_cflag & PARODD) | |
2684 | pp->parity = PT_ODDPARITY; | |
2685 | else | |
2686 | pp->parity = PT_EVENPARITY; | |
2687 | } else { | |
2688 | pp->parity = PT_NOPARITY; | |
2689 | } | |
2690 | ||
2691 | /* | |
2692 | * Set up any flow control options enabled. | |
2693 | */ | |
2694 | if (tiosp->c_iflag & IXON) { | |
2695 | pp->flow |= F_IXON; | |
2696 | if (tiosp->c_iflag & IXANY) | |
2697 | pp->flow |= F_IXANY; | |
2698 | } | |
2699 | if (tiosp->c_cflag & CRTSCTS) | |
2700 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); | |
2701 | ||
2702 | pp->startin = tiosp->c_cc[VSTART]; | |
2703 | pp->stopin = tiosp->c_cc[VSTOP]; | |
2704 | pp->startout = tiosp->c_cc[VSTART]; | |
2705 | pp->stopout = tiosp->c_cc[VSTOP]; | |
2706 | ||
2707 | /* | |
2708 | * Set up the RX char marking mask with those RX error types we must | |
2709 | * catch. We can get the slave to help us out a little here, it will | |
2710 | * ignore parity errors and breaks for us, and mark parity errors in | |
2711 | * the data stream. | |
2712 | */ | |
2713 | if (tiosp->c_iflag & IGNPAR) | |
2714 | pp->iflag |= FI_IGNRXERRS; | |
2715 | if (tiosp->c_iflag & IGNBRK) | |
2716 | pp->iflag |= FI_IGNBREAK; | |
2717 | ||
2718 | portp->rxmarkmsk = 0; | |
2719 | if (tiosp->c_iflag & (INPCK | PARMRK)) | |
2720 | pp->iflag |= FI_1MARKRXERRS; | |
2721 | if (tiosp->c_iflag & BRKINT) | |
2722 | portp->rxmarkmsk |= BRKINT; | |
2723 | ||
2724 | /* | |
2725 | * Set up clocal processing as required. | |
2726 | */ | |
2727 | if (tiosp->c_cflag & CLOCAL) | |
2728 | portp->flags &= ~ASYNC_CHECK_CD; | |
2729 | else | |
2730 | portp->flags |= ASYNC_CHECK_CD; | |
2731 | ||
2732 | /* | |
2733 | * Transfer any persistent flags into the asyport structure. | |
2734 | */ | |
2735 | pp->pflag = (portp->pflag & 0xffff); | |
2736 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; | |
2737 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; | |
2738 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; | |
2739 | } | |
2740 | ||
2741 | /*****************************************************************************/ | |
2742 | ||
2743 | /* | |
2744 | * Construct a slave signals structure for setting the DTR and RTS | |
2745 | * signals as specified. | |
2746 | */ | |
2747 | ||
2748 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) | |
2749 | { | |
1da177e4 LT |
2750 | memset(sp, 0, sizeof(asysigs_t)); |
2751 | if (dtr >= 0) { | |
2752 | sp->signal |= SG_DTR; | |
2753 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); | |
2754 | } | |
2755 | if (rts >= 0) { | |
2756 | sp->signal |= SG_RTS; | |
2757 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); | |
2758 | } | |
2759 | } | |
2760 | ||
2761 | /*****************************************************************************/ | |
2762 | ||
2763 | /* | |
2764 | * Convert the signals returned from the slave into a local TIOCM type | |
2765 | * signals value. We keep them locally in TIOCM format. | |
2766 | */ | |
2767 | ||
2768 | static long stli_mktiocm(unsigned long sigvalue) | |
2769 | { | |
4ac4360b | 2770 | long tiocm = 0; |
1da177e4 LT |
2771 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); |
2772 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); | |
2773 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); | |
2774 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); | |
2775 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); | |
2776 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); | |
2777 | return(tiocm); | |
2778 | } | |
2779 | ||
2780 | /*****************************************************************************/ | |
2781 | ||
2782 | /* | |
2783 | * All panels and ports actually attached have been worked out. All | |
2784 | * we need to do here is set up the appropriate per port data structures. | |
2785 | */ | |
2786 | ||
1f8ec435 | 2787 | static int stli_initports(struct stlibrd *brdp) |
1da177e4 | 2788 | { |
1f8ec435 | 2789 | struct stliport *portp; |
1328d737 | 2790 | unsigned int i, panelnr, panelport; |
1da177e4 | 2791 | |
1da177e4 | 2792 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { |
1f8ec435 | 2793 | portp = kzalloc(sizeof(struct stliport), GFP_KERNEL); |
b0b4ed72 | 2794 | if (!portp) { |
1da177e4 LT |
2795 | printk("STALLION: failed to allocate port structure\n"); |
2796 | continue; | |
2797 | } | |
2798 | ||
1da177e4 LT |
2799 | portp->magic = STLI_PORTMAGIC; |
2800 | portp->portnr = i; | |
2801 | portp->brdnr = brdp->brdnr; | |
2802 | portp->panelnr = panelnr; | |
2803 | portp->baud_base = STL_BAUDBASE; | |
2804 | portp->close_delay = STL_CLOSEDELAY; | |
2805 | portp->closing_wait = 30 * HZ; | |
3e577a80 | 2806 | INIT_WORK(&portp->tqhangup, stli_dohangup); |
1da177e4 LT |
2807 | init_waitqueue_head(&portp->open_wait); |
2808 | init_waitqueue_head(&portp->close_wait); | |
2809 | init_waitqueue_head(&portp->raw_wait); | |
2810 | panelport++; | |
2811 | if (panelport >= brdp->panels[panelnr]) { | |
2812 | panelport = 0; | |
2813 | panelnr++; | |
2814 | } | |
2815 | brdp->ports[i] = portp; | |
2816 | } | |
2817 | ||
4ac4360b | 2818 | return 0; |
1da177e4 LT |
2819 | } |
2820 | ||
2821 | /*****************************************************************************/ | |
2822 | ||
2823 | /* | |
2824 | * All the following routines are board specific hardware operations. | |
2825 | */ | |
2826 | ||
1f8ec435 | 2827 | static void stli_ecpinit(struct stlibrd *brdp) |
1da177e4 LT |
2828 | { |
2829 | unsigned long memconf; | |
2830 | ||
1da177e4 LT |
2831 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2832 | udelay(10); | |
2833 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2834 | udelay(100); | |
2835 | ||
2836 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; | |
2837 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); | |
2838 | } | |
2839 | ||
2840 | /*****************************************************************************/ | |
2841 | ||
1f8ec435 | 2842 | static void stli_ecpenable(struct stlibrd *brdp) |
1da177e4 | 2843 | { |
1da177e4 LT |
2844 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); |
2845 | } | |
2846 | ||
2847 | /*****************************************************************************/ | |
2848 | ||
1f8ec435 | 2849 | static void stli_ecpdisable(struct stlibrd *brdp) |
1da177e4 | 2850 | { |
1da177e4 LT |
2851 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
2852 | } | |
2853 | ||
2854 | /*****************************************************************************/ | |
2855 | ||
1f8ec435 | 2856 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2857 | { |
29756fa3 | 2858 | void __iomem *ptr; |
4ac4360b | 2859 | unsigned char val; |
1da177e4 LT |
2860 | |
2861 | if (offset > brdp->memsize) { | |
2862 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
2863 | "range at line=%d(%d), brd=%d\n", | |
2864 | (int) offset, line, __LINE__, brdp->brdnr); | |
2865 | ptr = NULL; | |
2866 | val = 0; | |
2867 | } else { | |
2868 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); | |
2869 | val = (unsigned char) (offset / ECP_ATPAGESIZE); | |
2870 | } | |
2871 | outb(val, (brdp->iobase + ECP_ATMEMPR)); | |
2872 | return(ptr); | |
2873 | } | |
2874 | ||
2875 | /*****************************************************************************/ | |
2876 | ||
1f8ec435 | 2877 | static void stli_ecpreset(struct stlibrd *brdp) |
1da177e4 | 2878 | { |
1da177e4 LT |
2879 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2880 | udelay(10); | |
2881 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2882 | udelay(500); | |
2883 | } | |
2884 | ||
2885 | /*****************************************************************************/ | |
2886 | ||
1f8ec435 | 2887 | static void stli_ecpintr(struct stlibrd *brdp) |
1da177e4 | 2888 | { |
1da177e4 LT |
2889 | outb(0x1, brdp->iobase); |
2890 | } | |
2891 | ||
2892 | /*****************************************************************************/ | |
2893 | ||
2894 | /* | |
2895 | * The following set of functions act on ECP EISA boards. | |
2896 | */ | |
2897 | ||
1f8ec435 | 2898 | static void stli_ecpeiinit(struct stlibrd *brdp) |
1da177e4 LT |
2899 | { |
2900 | unsigned long memconf; | |
2901 | ||
1da177e4 LT |
2902 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
2903 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2904 | udelay(10); | |
2905 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2906 | udelay(500); | |
2907 | ||
2908 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; | |
2909 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); | |
2910 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; | |
2911 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); | |
2912 | } | |
2913 | ||
2914 | /*****************************************************************************/ | |
2915 | ||
1f8ec435 | 2916 | static void stli_ecpeienable(struct stlibrd *brdp) |
1da177e4 LT |
2917 | { |
2918 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); | |
2919 | } | |
2920 | ||
2921 | /*****************************************************************************/ | |
2922 | ||
1f8ec435 | 2923 | static void stli_ecpeidisable(struct stlibrd *brdp) |
1da177e4 LT |
2924 | { |
2925 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2926 | } | |
2927 | ||
2928 | /*****************************************************************************/ | |
2929 | ||
1f8ec435 | 2930 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2931 | { |
29756fa3 | 2932 | void __iomem *ptr; |
1da177e4 LT |
2933 | unsigned char val; |
2934 | ||
1da177e4 LT |
2935 | if (offset > brdp->memsize) { |
2936 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
2937 | "range at line=%d(%d), brd=%d\n", | |
2938 | (int) offset, line, __LINE__, brdp->brdnr); | |
2939 | ptr = NULL; | |
2940 | val = 0; | |
2941 | } else { | |
2942 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); | |
2943 | if (offset < ECP_EIPAGESIZE) | |
2944 | val = ECP_EIENABLE; | |
2945 | else | |
2946 | val = ECP_EIENABLE | 0x40; | |
2947 | } | |
2948 | outb(val, (brdp->iobase + ECP_EICONFR)); | |
2949 | return(ptr); | |
2950 | } | |
2951 | ||
2952 | /*****************************************************************************/ | |
2953 | ||
1f8ec435 | 2954 | static void stli_ecpeireset(struct stlibrd *brdp) |
1da177e4 LT |
2955 | { |
2956 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2957 | udelay(10); | |
2958 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2959 | udelay(500); | |
2960 | } | |
2961 | ||
2962 | /*****************************************************************************/ | |
2963 | ||
2964 | /* | |
2965 | * The following set of functions act on ECP MCA boards. | |
2966 | */ | |
2967 | ||
1f8ec435 | 2968 | static void stli_ecpmcenable(struct stlibrd *brdp) |
1da177e4 LT |
2969 | { |
2970 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); | |
2971 | } | |
2972 | ||
2973 | /*****************************************************************************/ | |
2974 | ||
1f8ec435 | 2975 | static void stli_ecpmcdisable(struct stlibrd *brdp) |
1da177e4 LT |
2976 | { |
2977 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2978 | } | |
2979 | ||
2980 | /*****************************************************************************/ | |
2981 | ||
1f8ec435 | 2982 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2983 | { |
29756fa3 | 2984 | void __iomem *ptr; |
4ac4360b | 2985 | unsigned char val; |
1da177e4 LT |
2986 | |
2987 | if (offset > brdp->memsize) { | |
2988 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
2989 | "range at line=%d(%d), brd=%d\n", | |
2990 | (int) offset, line, __LINE__, brdp->brdnr); | |
2991 | ptr = NULL; | |
2992 | val = 0; | |
2993 | } else { | |
2994 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); | |
2995 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; | |
2996 | } | |
2997 | outb(val, (brdp->iobase + ECP_MCCONFR)); | |
2998 | return(ptr); | |
2999 | } | |
3000 | ||
3001 | /*****************************************************************************/ | |
3002 | ||
1f8ec435 | 3003 | static void stli_ecpmcreset(struct stlibrd *brdp) |
1da177e4 LT |
3004 | { |
3005 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); | |
3006 | udelay(10); | |
3007 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
3008 | udelay(500); | |
3009 | } | |
3010 | ||
3011 | /*****************************************************************************/ | |
3012 | ||
3013 | /* | |
3014 | * The following set of functions act on ECP PCI boards. | |
3015 | */ | |
3016 | ||
1f8ec435 | 3017 | static void stli_ecppciinit(struct stlibrd *brdp) |
1da177e4 | 3018 | { |
1da177e4 LT |
3019 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
3020 | udelay(10); | |
3021 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
3022 | udelay(500); | |
3023 | } | |
3024 | ||
3025 | /*****************************************************************************/ | |
3026 | ||
1f8ec435 | 3027 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3028 | { |
29756fa3 | 3029 | void __iomem *ptr; |
1da177e4 LT |
3030 | unsigned char val; |
3031 | ||
1da177e4 LT |
3032 | if (offset > brdp->memsize) { |
3033 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3034 | "range at line=%d(%d), board=%d\n", | |
3035 | (int) offset, line, __LINE__, brdp->brdnr); | |
3036 | ptr = NULL; | |
3037 | val = 0; | |
3038 | } else { | |
3039 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); | |
3040 | val = (offset / ECP_PCIPAGESIZE) << 1; | |
3041 | } | |
3042 | outb(val, (brdp->iobase + ECP_PCICONFR)); | |
3043 | return(ptr); | |
3044 | } | |
3045 | ||
3046 | /*****************************************************************************/ | |
3047 | ||
1f8ec435 | 3048 | static void stli_ecppcireset(struct stlibrd *brdp) |
1da177e4 LT |
3049 | { |
3050 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
3051 | udelay(10); | |
3052 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
3053 | udelay(500); | |
3054 | } | |
3055 | ||
3056 | /*****************************************************************************/ | |
3057 | ||
3058 | /* | |
3059 | * The following routines act on ONboards. | |
3060 | */ | |
3061 | ||
1f8ec435 | 3062 | static void stli_onbinit(struct stlibrd *brdp) |
1da177e4 LT |
3063 | { |
3064 | unsigned long memconf; | |
3065 | ||
1da177e4 LT |
3066 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
3067 | udelay(10); | |
3068 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
3069 | mdelay(1000); | |
3070 | ||
3071 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; | |
3072 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); | |
3073 | outb(0x1, brdp->iobase); | |
3074 | mdelay(1); | |
3075 | } | |
3076 | ||
3077 | /*****************************************************************************/ | |
3078 | ||
1f8ec435 | 3079 | static void stli_onbenable(struct stlibrd *brdp) |
1da177e4 | 3080 | { |
1da177e4 LT |
3081 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); |
3082 | } | |
3083 | ||
3084 | /*****************************************************************************/ | |
3085 | ||
1f8ec435 | 3086 | static void stli_onbdisable(struct stlibrd *brdp) |
1da177e4 | 3087 | { |
1da177e4 LT |
3088 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); |
3089 | } | |
3090 | ||
3091 | /*****************************************************************************/ | |
3092 | ||
1f8ec435 | 3093 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3094 | { |
29756fa3 | 3095 | void __iomem *ptr; |
1da177e4 | 3096 | |
1da177e4 LT |
3097 | if (offset > brdp->memsize) { |
3098 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3099 | "range at line=%d(%d), brd=%d\n", | |
3100 | (int) offset, line, __LINE__, brdp->brdnr); | |
3101 | ptr = NULL; | |
3102 | } else { | |
3103 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); | |
3104 | } | |
3105 | return(ptr); | |
3106 | } | |
3107 | ||
3108 | /*****************************************************************************/ | |
3109 | ||
1f8ec435 | 3110 | static void stli_onbreset(struct stlibrd *brdp) |
1da177e4 | 3111 | { |
1da177e4 LT |
3112 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
3113 | udelay(10); | |
3114 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
3115 | mdelay(1000); | |
3116 | } | |
3117 | ||
3118 | /*****************************************************************************/ | |
3119 | ||
3120 | /* | |
3121 | * The following routines act on ONboard EISA. | |
3122 | */ | |
3123 | ||
1f8ec435 | 3124 | static void stli_onbeinit(struct stlibrd *brdp) |
1da177e4 LT |
3125 | { |
3126 | unsigned long memconf; | |
3127 | ||
1da177e4 LT |
3128 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
3129 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3130 | udelay(10); | |
3131 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3132 | mdelay(1000); | |
3133 | ||
3134 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; | |
3135 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); | |
3136 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; | |
3137 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); | |
3138 | outb(0x1, brdp->iobase); | |
3139 | mdelay(1); | |
3140 | } | |
3141 | ||
3142 | /*****************************************************************************/ | |
3143 | ||
1f8ec435 | 3144 | static void stli_onbeenable(struct stlibrd *brdp) |
1da177e4 | 3145 | { |
1da177e4 LT |
3146 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); |
3147 | } | |
3148 | ||
3149 | /*****************************************************************************/ | |
3150 | ||
1f8ec435 | 3151 | static void stli_onbedisable(struct stlibrd *brdp) |
1da177e4 | 3152 | { |
1da177e4 LT |
3153 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
3154 | } | |
3155 | ||
3156 | /*****************************************************************************/ | |
3157 | ||
1f8ec435 | 3158 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3159 | { |
29756fa3 | 3160 | void __iomem *ptr; |
4ac4360b | 3161 | unsigned char val; |
1da177e4 LT |
3162 | |
3163 | if (offset > brdp->memsize) { | |
3164 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3165 | "range at line=%d(%d), brd=%d\n", | |
3166 | (int) offset, line, __LINE__, brdp->brdnr); | |
3167 | ptr = NULL; | |
3168 | val = 0; | |
3169 | } else { | |
3170 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); | |
3171 | if (offset < ONB_EIPAGESIZE) | |
3172 | val = ONB_EIENABLE; | |
3173 | else | |
3174 | val = ONB_EIENABLE | 0x40; | |
3175 | } | |
3176 | outb(val, (brdp->iobase + ONB_EICONFR)); | |
3177 | return(ptr); | |
3178 | } | |
3179 | ||
3180 | /*****************************************************************************/ | |
3181 | ||
1f8ec435 | 3182 | static void stli_onbereset(struct stlibrd *brdp) |
1da177e4 | 3183 | { |
1da177e4 LT |
3184 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
3185 | udelay(10); | |
3186 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3187 | mdelay(1000); | |
3188 | } | |
3189 | ||
3190 | /*****************************************************************************/ | |
3191 | ||
3192 | /* | |
3193 | * The following routines act on Brumby boards. | |
3194 | */ | |
3195 | ||
1f8ec435 | 3196 | static void stli_bbyinit(struct stlibrd *brdp) |
1da177e4 | 3197 | { |
1da177e4 LT |
3198 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3199 | udelay(10); | |
3200 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3201 | mdelay(1000); | |
3202 | outb(0x1, brdp->iobase); | |
3203 | mdelay(1); | |
3204 | } | |
3205 | ||
3206 | /*****************************************************************************/ | |
3207 | ||
1f8ec435 | 3208 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3209 | { |
29756fa3 | 3210 | void __iomem *ptr; |
4ac4360b | 3211 | unsigned char val; |
1da177e4 | 3212 | |
4ac4360b | 3213 | BUG_ON(offset > brdp->memsize); |
1da177e4 | 3214 | |
4ac4360b AC |
3215 | ptr = brdp->membase + (offset % BBY_PAGESIZE); |
3216 | val = (unsigned char) (offset / BBY_PAGESIZE); | |
1da177e4 LT |
3217 | outb(val, (brdp->iobase + BBY_ATCONFR)); |
3218 | return(ptr); | |
3219 | } | |
3220 | ||
3221 | /*****************************************************************************/ | |
3222 | ||
1f8ec435 | 3223 | static void stli_bbyreset(struct stlibrd *brdp) |
1da177e4 | 3224 | { |
1da177e4 LT |
3225 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3226 | udelay(10); | |
3227 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3228 | mdelay(1000); | |
3229 | } | |
3230 | ||
3231 | /*****************************************************************************/ | |
3232 | ||
3233 | /* | |
3234 | * The following routines act on original old Stallion boards. | |
3235 | */ | |
3236 | ||
1f8ec435 | 3237 | static void stli_stalinit(struct stlibrd *brdp) |
1da177e4 | 3238 | { |
1da177e4 LT |
3239 | outb(0x1, brdp->iobase); |
3240 | mdelay(1000); | |
3241 | } | |
3242 | ||
3243 | /*****************************************************************************/ | |
3244 | ||
1f8ec435 | 3245 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3246 | { |
4ac4360b AC |
3247 | BUG_ON(offset > brdp->memsize); |
3248 | return brdp->membase + (offset % STAL_PAGESIZE); | |
1da177e4 LT |
3249 | } |
3250 | ||
3251 | /*****************************************************************************/ | |
3252 | ||
1f8ec435 | 3253 | static void stli_stalreset(struct stlibrd *brdp) |
1da177e4 | 3254 | { |
4ac4360b | 3255 | u32 __iomem *vecp; |
1da177e4 | 3256 | |
4ac4360b AC |
3257 | vecp = (u32 __iomem *) (brdp->membase + 0x30); |
3258 | writel(0xffff0000, vecp); | |
1da177e4 LT |
3259 | outb(0, brdp->iobase); |
3260 | mdelay(1000); | |
3261 | } | |
3262 | ||
3263 | /*****************************************************************************/ | |
3264 | ||
3265 | /* | |
3266 | * Try to find an ECP board and initialize it. This handles only ECP | |
3267 | * board types. | |
3268 | */ | |
3269 | ||
1f8ec435 | 3270 | static int stli_initecp(struct stlibrd *brdp) |
1da177e4 | 3271 | { |
4ac4360b AC |
3272 | cdkecpsig_t sig; |
3273 | cdkecpsig_t __iomem *sigsp; | |
3274 | unsigned int status, nxtid; | |
3275 | char *name; | |
8f8f5a58 | 3276 | int retval, panelnr, nrports; |
1da177e4 | 3277 | |
8f8f5a58 JS |
3278 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) { |
3279 | retval = -ENODEV; | |
3280 | goto err; | |
3281 | } | |
3282 | ||
3283 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { | |
3284 | retval = -EIO; | |
3285 | goto err; | |
1da177e4 LT |
3286 | } |
3287 | ||
3288 | brdp->iosize = ECP_IOSIZE; | |
3289 | ||
3290 | /* | |
3291 | * Based on the specific board type setup the common vars to access | |
3292 | * and enable shared memory. Set all board specific information now | |
3293 | * as well. | |
3294 | */ | |
3295 | switch (brdp->brdtype) { | |
3296 | case BRD_ECP: | |
1da177e4 LT |
3297 | brdp->memsize = ECP_MEMSIZE; |
3298 | brdp->pagesize = ECP_ATPAGESIZE; | |
3299 | brdp->init = stli_ecpinit; | |
3300 | brdp->enable = stli_ecpenable; | |
3301 | brdp->reenable = stli_ecpenable; | |
3302 | brdp->disable = stli_ecpdisable; | |
3303 | brdp->getmemptr = stli_ecpgetmemptr; | |
3304 | brdp->intr = stli_ecpintr; | |
3305 | brdp->reset = stli_ecpreset; | |
3306 | name = "serial(EC8/64)"; | |
3307 | break; | |
3308 | ||
3309 | case BRD_ECPE: | |
1da177e4 LT |
3310 | brdp->memsize = ECP_MEMSIZE; |
3311 | brdp->pagesize = ECP_EIPAGESIZE; | |
3312 | brdp->init = stli_ecpeiinit; | |
3313 | brdp->enable = stli_ecpeienable; | |
3314 | brdp->reenable = stli_ecpeienable; | |
3315 | brdp->disable = stli_ecpeidisable; | |
3316 | brdp->getmemptr = stli_ecpeigetmemptr; | |
3317 | brdp->intr = stli_ecpintr; | |
3318 | brdp->reset = stli_ecpeireset; | |
3319 | name = "serial(EC8/64-EI)"; | |
3320 | break; | |
3321 | ||
3322 | case BRD_ECPMC: | |
1da177e4 LT |
3323 | brdp->memsize = ECP_MEMSIZE; |
3324 | brdp->pagesize = ECP_MCPAGESIZE; | |
3325 | brdp->init = NULL; | |
3326 | brdp->enable = stli_ecpmcenable; | |
3327 | brdp->reenable = stli_ecpmcenable; | |
3328 | brdp->disable = stli_ecpmcdisable; | |
3329 | brdp->getmemptr = stli_ecpmcgetmemptr; | |
3330 | brdp->intr = stli_ecpintr; | |
3331 | brdp->reset = stli_ecpmcreset; | |
3332 | name = "serial(EC8/64-MCA)"; | |
3333 | break; | |
3334 | ||
3335 | case BRD_ECPPCI: | |
1da177e4 LT |
3336 | brdp->memsize = ECP_PCIMEMSIZE; |
3337 | brdp->pagesize = ECP_PCIPAGESIZE; | |
3338 | brdp->init = stli_ecppciinit; | |
3339 | brdp->enable = NULL; | |
3340 | brdp->reenable = NULL; | |
3341 | brdp->disable = NULL; | |
3342 | brdp->getmemptr = stli_ecppcigetmemptr; | |
3343 | brdp->intr = stli_ecpintr; | |
3344 | brdp->reset = stli_ecppcireset; | |
3345 | name = "serial(EC/RA-PCI)"; | |
3346 | break; | |
3347 | ||
3348 | default: | |
8f8f5a58 JS |
3349 | retval = -EINVAL; |
3350 | goto err_reg; | |
1da177e4 LT |
3351 | } |
3352 | ||
3353 | /* | |
3354 | * The per-board operations structure is all set up, so now let's go | |
3355 | * and get the board operational. Firstly initialize board configuration | |
3356 | * registers. Set the memory mapping info so we can get at the boards | |
3357 | * shared memory. | |
3358 | */ | |
3359 | EBRDINIT(brdp); | |
3360 | ||
3361 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
8f8f5a58 JS |
3362 | if (brdp->membase == NULL) { |
3363 | retval = -ENOMEM; | |
3364 | goto err_reg; | |
1da177e4 LT |
3365 | } |
3366 | ||
3367 | /* | |
3368 | * Now that all specific code is set up, enable the shared memory and | |
3369 | * look for the a signature area that will tell us exactly what board | |
3370 | * this is, and what it is connected to it. | |
3371 | */ | |
3372 | EBRDENABLE(brdp); | |
4ac4360b | 3373 | sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
634965f5 | 3374 | memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); |
1da177e4 LT |
3375 | EBRDDISABLE(brdp); |
3376 | ||
8f8f5a58 JS |
3377 | if (sig.magic != cpu_to_le32(ECP_MAGIC)) { |
3378 | retval = -ENODEV; | |
3379 | goto err_unmap; | |
1da177e4 LT |
3380 | } |
3381 | ||
3382 | /* | |
3383 | * Scan through the signature looking at the panels connected to the | |
3384 | * board. Calculate the total number of ports as we go. | |
3385 | */ | |
3386 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { | |
3387 | status = sig.panelid[nxtid]; | |
3388 | if ((status & ECH_PNLIDMASK) != nxtid) | |
3389 | break; | |
3390 | ||
3391 | brdp->panelids[panelnr] = status; | |
3392 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; | |
3393 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) | |
3394 | nxtid++; | |
3395 | brdp->panels[panelnr] = nrports; | |
3396 | brdp->nrports += nrports; | |
3397 | nxtid++; | |
3398 | brdp->nrpanels++; | |
3399 | } | |
3400 | ||
3401 | ||
3402 | brdp->state |= BST_FOUND; | |
4ac4360b | 3403 | return 0; |
8f8f5a58 JS |
3404 | err_unmap: |
3405 | iounmap(brdp->membase); | |
3406 | brdp->membase = NULL; | |
3407 | err_reg: | |
3408 | release_region(brdp->iobase, brdp->iosize); | |
3409 | err: | |
3410 | return retval; | |
1da177e4 LT |
3411 | } |
3412 | ||
3413 | /*****************************************************************************/ | |
3414 | ||
3415 | /* | |
3416 | * Try to find an ONboard, Brumby or Stallion board and initialize it. | |
3417 | * This handles only these board types. | |
3418 | */ | |
3419 | ||
1f8ec435 | 3420 | static int stli_initonb(struct stlibrd *brdp) |
1da177e4 | 3421 | { |
4ac4360b AC |
3422 | cdkonbsig_t sig; |
3423 | cdkonbsig_t __iomem *sigsp; | |
3424 | char *name; | |
8f8f5a58 | 3425 | int i, retval; |
1da177e4 LT |
3426 | |
3427 | /* | |
3428 | * Do a basic sanity check on the IO and memory addresses. | |
3429 | */ | |
8f8f5a58 JS |
3430 | if (brdp->iobase == 0 || brdp->memaddr == 0) { |
3431 | retval = -ENODEV; | |
3432 | goto err; | |
3433 | } | |
1da177e4 LT |
3434 | |
3435 | brdp->iosize = ONB_IOSIZE; | |
3436 | ||
8f8f5a58 JS |
3437 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) { |
3438 | retval = -EIO; | |
3439 | goto err; | |
3440 | } | |
1da177e4 LT |
3441 | |
3442 | /* | |
3443 | * Based on the specific board type setup the common vars to access | |
3444 | * and enable shared memory. Set all board specific information now | |
3445 | * as well. | |
3446 | */ | |
3447 | switch (brdp->brdtype) { | |
3448 | case BRD_ONBOARD: | |
1da177e4 | 3449 | case BRD_ONBOARD2: |
1da177e4 LT |
3450 | brdp->memsize = ONB_MEMSIZE; |
3451 | brdp->pagesize = ONB_ATPAGESIZE; | |
3452 | brdp->init = stli_onbinit; | |
3453 | brdp->enable = stli_onbenable; | |
3454 | brdp->reenable = stli_onbenable; | |
3455 | brdp->disable = stli_onbdisable; | |
3456 | brdp->getmemptr = stli_onbgetmemptr; | |
3457 | brdp->intr = stli_ecpintr; | |
3458 | brdp->reset = stli_onbreset; | |
3459 | if (brdp->memaddr > 0x100000) | |
3460 | brdp->enabval = ONB_MEMENABHI; | |
3461 | else | |
3462 | brdp->enabval = ONB_MEMENABLO; | |
3463 | name = "serial(ONBoard)"; | |
3464 | break; | |
3465 | ||
3466 | case BRD_ONBOARDE: | |
1da177e4 LT |
3467 | brdp->memsize = ONB_EIMEMSIZE; |
3468 | brdp->pagesize = ONB_EIPAGESIZE; | |
3469 | brdp->init = stli_onbeinit; | |
3470 | brdp->enable = stli_onbeenable; | |
3471 | brdp->reenable = stli_onbeenable; | |
3472 | brdp->disable = stli_onbedisable; | |
3473 | brdp->getmemptr = stli_onbegetmemptr; | |
3474 | brdp->intr = stli_ecpintr; | |
3475 | brdp->reset = stli_onbereset; | |
3476 | name = "serial(ONBoard/E)"; | |
3477 | break; | |
3478 | ||
3479 | case BRD_BRUMBY4: | |
1da177e4 LT |
3480 | brdp->memsize = BBY_MEMSIZE; |
3481 | brdp->pagesize = BBY_PAGESIZE; | |
3482 | brdp->init = stli_bbyinit; | |
3483 | brdp->enable = NULL; | |
3484 | brdp->reenable = NULL; | |
3485 | brdp->disable = NULL; | |
3486 | brdp->getmemptr = stli_bbygetmemptr; | |
3487 | brdp->intr = stli_ecpintr; | |
3488 | brdp->reset = stli_bbyreset; | |
3489 | name = "serial(Brumby)"; | |
3490 | break; | |
3491 | ||
3492 | case BRD_STALLION: | |
1da177e4 LT |
3493 | brdp->memsize = STAL_MEMSIZE; |
3494 | brdp->pagesize = STAL_PAGESIZE; | |
3495 | brdp->init = stli_stalinit; | |
3496 | brdp->enable = NULL; | |
3497 | brdp->reenable = NULL; | |
3498 | brdp->disable = NULL; | |
3499 | brdp->getmemptr = stli_stalgetmemptr; | |
3500 | brdp->intr = stli_ecpintr; | |
3501 | brdp->reset = stli_stalreset; | |
3502 | name = "serial(Stallion)"; | |
3503 | break; | |
3504 | ||
3505 | default: | |
8f8f5a58 JS |
3506 | retval = -EINVAL; |
3507 | goto err_reg; | |
1da177e4 LT |
3508 | } |
3509 | ||
3510 | /* | |
3511 | * The per-board operations structure is all set up, so now let's go | |
3512 | * and get the board operational. Firstly initialize board configuration | |
3513 | * registers. Set the memory mapping info so we can get at the boards | |
3514 | * shared memory. | |
3515 | */ | |
3516 | EBRDINIT(brdp); | |
3517 | ||
3518 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
8f8f5a58 JS |
3519 | if (brdp->membase == NULL) { |
3520 | retval = -ENOMEM; | |
3521 | goto err_reg; | |
1da177e4 LT |
3522 | } |
3523 | ||
3524 | /* | |
3525 | * Now that all specific code is set up, enable the shared memory and | |
3526 | * look for the a signature area that will tell us exactly what board | |
3527 | * this is, and how many ports. | |
3528 | */ | |
3529 | EBRDENABLE(brdp); | |
4ac4360b AC |
3530 | sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
3531 | memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); | |
1da177e4 LT |
3532 | EBRDDISABLE(brdp); |
3533 | ||
4ac4360b AC |
3534 | if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || |
3535 | sig.magic1 != cpu_to_le16(ONB_MAGIC1) || | |
3536 | sig.magic2 != cpu_to_le16(ONB_MAGIC2) || | |
8f8f5a58 JS |
3537 | sig.magic3 != cpu_to_le16(ONB_MAGIC3)) { |
3538 | retval = -ENODEV; | |
3539 | goto err_unmap; | |
1da177e4 LT |
3540 | } |
3541 | ||
3542 | /* | |
3543 | * Scan through the signature alive mask and calculate how many ports | |
3544 | * there are on this board. | |
3545 | */ | |
3546 | brdp->nrpanels = 1; | |
3547 | if (sig.amask1) { | |
3548 | brdp->nrports = 32; | |
3549 | } else { | |
3550 | for (i = 0; (i < 16); i++) { | |
3551 | if (((sig.amask0 << i) & 0x8000) == 0) | |
3552 | break; | |
3553 | } | |
3554 | brdp->nrports = i; | |
3555 | } | |
3556 | brdp->panels[0] = brdp->nrports; | |
3557 | ||
3558 | ||
3559 | brdp->state |= BST_FOUND; | |
4ac4360b | 3560 | return 0; |
8f8f5a58 JS |
3561 | err_unmap: |
3562 | iounmap(brdp->membase); | |
3563 | brdp->membase = NULL; | |
3564 | err_reg: | |
3565 | release_region(brdp->iobase, brdp->iosize); | |
3566 | err: | |
3567 | return retval; | |
1da177e4 LT |
3568 | } |
3569 | ||
3570 | /*****************************************************************************/ | |
3571 | ||
3572 | /* | |
3573 | * Start up a running board. This routine is only called after the | |
3574 | * code has been down loaded to the board and is operational. It will | |
3575 | * read in the memory map, and get the show on the road... | |
3576 | */ | |
3577 | ||
1f8ec435 | 3578 | static int stli_startbrd(struct stlibrd *brdp) |
1da177e4 | 3579 | { |
4ac4360b AC |
3580 | cdkhdr_t __iomem *hdrp; |
3581 | cdkmem_t __iomem *memp; | |
3582 | cdkasy_t __iomem *ap; | |
3583 | unsigned long flags; | |
1328d737 | 3584 | unsigned int portnr, nrdevs, i; |
1f8ec435 | 3585 | struct stliport *portp; |
1328d737 | 3586 | int rc = 0; |
4ac4360b AC |
3587 | u32 memoff; |
3588 | ||
3589 | spin_lock_irqsave(&brd_lock, flags); | |
1da177e4 | 3590 | EBRDENABLE(brdp); |
4ac4360b | 3591 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1da177e4 LT |
3592 | nrdevs = hdrp->nrdevs; |
3593 | ||
3594 | #if 0 | |
3595 | printk("%s(%d): CDK version %d.%d.%d --> " | |
3596 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", | |
4ac4360b AC |
3597 | __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), |
3598 | readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), | |
3599 | readl(&hdrp->slavep)); | |
1da177e4 LT |
3600 | #endif |
3601 | ||
3602 | if (nrdevs < (brdp->nrports + 1)) { | |
3603 | printk(KERN_ERR "STALLION: slave failed to allocate memory for " | |
3604 | "all devices, devices=%d\n", nrdevs); | |
3605 | brdp->nrports = nrdevs - 1; | |
3606 | } | |
3607 | brdp->nrdevs = nrdevs; | |
3608 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; | |
3609 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; | |
3610 | brdp->bitsize = (nrdevs + 7) / 8; | |
4ac4360b AC |
3611 | memoff = readl(&hdrp->memp); |
3612 | if (memoff > brdp->memsize) { | |
1da177e4 LT |
3613 | printk(KERN_ERR "STALLION: corrupted shared memory region?\n"); |
3614 | rc = -EIO; | |
3615 | goto stli_donestartup; | |
3616 | } | |
4ac4360b AC |
3617 | memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); |
3618 | if (readw(&memp->dtype) != TYP_ASYNCTRL) { | |
1da177e4 LT |
3619 | printk(KERN_ERR "STALLION: no slave control device found\n"); |
3620 | goto stli_donestartup; | |
3621 | } | |
3622 | memp++; | |
3623 | ||
3624 | /* | |
3625 | * Cycle through memory allocation of each port. We are guaranteed to | |
3626 | * have all ports inside the first page of slave window, so no need to | |
3627 | * change pages while reading memory map. | |
3628 | */ | |
3629 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { | |
4ac4360b | 3630 | if (readw(&memp->dtype) != TYP_ASYNC) |
1da177e4 LT |
3631 | break; |
3632 | portp = brdp->ports[portnr]; | |
4ac4360b | 3633 | if (portp == NULL) |
1da177e4 LT |
3634 | break; |
3635 | portp->devnr = i; | |
4ac4360b | 3636 | portp->addr = readl(&memp->offset); |
1da177e4 LT |
3637 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); |
3638 | portp->portidx = (unsigned char) (i / 8); | |
3639 | portp->portbit = (unsigned char) (0x1 << (i % 8)); | |
3640 | } | |
3641 | ||
4ac4360b | 3642 | writeb(0xff, &hdrp->slavereq); |
1da177e4 LT |
3643 | |
3644 | /* | |
3645 | * For each port setup a local copy of the RX and TX buffer offsets | |
3646 | * and sizes. We do this separate from the above, because we need to | |
3647 | * move the shared memory page... | |
3648 | */ | |
3649 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { | |
3650 | portp = brdp->ports[portnr]; | |
4ac4360b | 3651 | if (portp == NULL) |
1da177e4 LT |
3652 | break; |
3653 | if (portp->addr == 0) | |
3654 | break; | |
4ac4360b AC |
3655 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
3656 | if (ap != NULL) { | |
3657 | portp->rxsize = readw(&ap->rxq.size); | |
3658 | portp->txsize = readw(&ap->txq.size); | |
3659 | portp->rxoffset = readl(&ap->rxq.offset); | |
3660 | portp->txoffset = readl(&ap->txq.offset); | |
1da177e4 LT |
3661 | } |
3662 | } | |
3663 | ||
3664 | stli_donestartup: | |
3665 | EBRDDISABLE(brdp); | |
4ac4360b | 3666 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
3667 | |
3668 | if (rc == 0) | |
3669 | brdp->state |= BST_STARTED; | |
3670 | ||
3671 | if (! stli_timeron) { | |
3672 | stli_timeron++; | |
3673 | stli_timerlist.expires = STLI_TIMEOUT; | |
3674 | add_timer(&stli_timerlist); | |
3675 | } | |
3676 | ||
4ac4360b | 3677 | return rc; |
1da177e4 LT |
3678 | } |
3679 | ||
3680 | /*****************************************************************************/ | |
3681 | ||
3682 | /* | |
3683 | * Probe and initialize the specified board. | |
3684 | */ | |
3685 | ||
1f8ec435 | 3686 | static int __devinit stli_brdinit(struct stlibrd *brdp) |
1da177e4 | 3687 | { |
8f8f5a58 JS |
3688 | int retval; |
3689 | ||
1da177e4 LT |
3690 | switch (brdp->brdtype) { |
3691 | case BRD_ECP: | |
3692 | case BRD_ECPE: | |
3693 | case BRD_ECPMC: | |
3694 | case BRD_ECPPCI: | |
8f8f5a58 | 3695 | retval = stli_initecp(brdp); |
1da177e4 LT |
3696 | break; |
3697 | case BRD_ONBOARD: | |
3698 | case BRD_ONBOARDE: | |
3699 | case BRD_ONBOARD2: | |
1da177e4 | 3700 | case BRD_BRUMBY4: |
1da177e4 | 3701 | case BRD_STALLION: |
8f8f5a58 | 3702 | retval = stli_initonb(brdp); |
1da177e4 | 3703 | break; |
1da177e4 LT |
3704 | default: |
3705 | printk(KERN_ERR "STALLION: board=%d is unknown board " | |
3706 | "type=%d\n", brdp->brdnr, brdp->brdtype); | |
8f8f5a58 | 3707 | retval = -ENODEV; |
1da177e4 LT |
3708 | } |
3709 | ||
8f8f5a58 JS |
3710 | if (retval) |
3711 | return retval; | |
1da177e4 LT |
3712 | |
3713 | stli_initports(brdp); | |
3714 | printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x " | |
3715 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], | |
3716 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, | |
3717 | brdp->nrpanels, brdp->nrports); | |
4ac4360b | 3718 | return 0; |
1da177e4 LT |
3719 | } |
3720 | ||
a00f33f3 | 3721 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3722 | /*****************************************************************************/ |
3723 | ||
3724 | /* | |
3725 | * Probe around trying to find where the EISA boards shared memory | |
3726 | * might be. This is a bit if hack, but it is the best we can do. | |
3727 | */ | |
3728 | ||
1f8ec435 | 3729 | static int stli_eisamemprobe(struct stlibrd *brdp) |
1da177e4 | 3730 | { |
4ac4360b AC |
3731 | cdkecpsig_t ecpsig, __iomem *ecpsigp; |
3732 | cdkonbsig_t onbsig, __iomem *onbsigp; | |
1da177e4 LT |
3733 | int i, foundit; |
3734 | ||
1da177e4 LT |
3735 | /* |
3736 | * First up we reset the board, to get it into a known state. There | |
3737 | * is only 2 board types here we need to worry about. Don;t use the | |
3738 | * standard board init routine here, it programs up the shared | |
3739 | * memory address, and we don't know it yet... | |
3740 | */ | |
3741 | if (brdp->brdtype == BRD_ECPE) { | |
3742 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
3743 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3744 | udelay(10); | |
3745 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3746 | udelay(500); | |
3747 | stli_ecpeienable(brdp); | |
3748 | } else if (brdp->brdtype == BRD_ONBOARDE) { | |
3749 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
3750 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3751 | udelay(10); | |
3752 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3753 | mdelay(100); | |
3754 | outb(0x1, brdp->iobase); | |
3755 | mdelay(1); | |
3756 | stli_onbeenable(brdp); | |
3757 | } else { | |
4ac4360b | 3758 | return -ENODEV; |
1da177e4 LT |
3759 | } |
3760 | ||
3761 | foundit = 0; | |
3762 | brdp->memsize = ECP_MEMSIZE; | |
3763 | ||
3764 | /* | |
3765 | * Board shared memory is enabled, so now we have a poke around and | |
3766 | * see if we can find it. | |
3767 | */ | |
3768 | for (i = 0; (i < stli_eisamempsize); i++) { | |
3769 | brdp->memaddr = stli_eisamemprobeaddrs[i]; | |
1da177e4 | 3770 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); |
4ac4360b | 3771 | if (brdp->membase == NULL) |
1da177e4 LT |
3772 | continue; |
3773 | ||
3774 | if (brdp->brdtype == BRD_ECPE) { | |
29756fa3 | 3775 | ecpsigp = stli_ecpeigetmemptr(brdp, |
1da177e4 | 3776 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3777 | memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); |
3778 | if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) | |
1da177e4 LT |
3779 | foundit = 1; |
3780 | } else { | |
4ac4360b | 3781 | onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, |
1da177e4 | 3782 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3783 | memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); |
3784 | if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && | |
3785 | (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && | |
3786 | (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && | |
3787 | (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) | |
1da177e4 LT |
3788 | foundit = 1; |
3789 | } | |
3790 | ||
3791 | iounmap(brdp->membase); | |
3792 | if (foundit) | |
3793 | break; | |
3794 | } | |
3795 | ||
3796 | /* | |
3797 | * Regardless of whether we found the shared memory or not we must | |
3798 | * disable the region. After that return success or failure. | |
3799 | */ | |
3800 | if (brdp->brdtype == BRD_ECPE) | |
3801 | stli_ecpeidisable(brdp); | |
3802 | else | |
3803 | stli_onbedisable(brdp); | |
3804 | ||
3805 | if (! foundit) { | |
3806 | brdp->memaddr = 0; | |
3807 | brdp->membase = NULL; | |
3808 | printk(KERN_ERR "STALLION: failed to probe shared memory " | |
3809 | "region for %s in EISA slot=%d\n", | |
3810 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); | |
4ac4360b | 3811 | return -ENODEV; |
1da177e4 | 3812 | } |
4ac4360b | 3813 | return 0; |
1da177e4 | 3814 | } |
a00f33f3 | 3815 | #endif |
1da177e4 LT |
3816 | |
3817 | static int stli_getbrdnr(void) | |
3818 | { | |
1328d737 | 3819 | unsigned int i; |
1da177e4 LT |
3820 | |
3821 | for (i = 0; i < STL_MAXBRDS; i++) { | |
3822 | if (!stli_brds[i]) { | |
3823 | if (i >= stli_nrbrds) | |
3824 | stli_nrbrds = i + 1; | |
3825 | return i; | |
3826 | } | |
3827 | } | |
3828 | return -1; | |
3829 | } | |
3830 | ||
a00f33f3 | 3831 | #if STLI_EISAPROBE != 0 |
1da177e4 LT |
3832 | /*****************************************************************************/ |
3833 | ||
3834 | /* | |
3835 | * Probe around and try to find any EISA boards in system. The biggest | |
3836 | * problem here is finding out what memory address is associated with | |
3837 | * an EISA board after it is found. The registers of the ECPE and | |
3838 | * ONboardE are not readable - so we can't read them from there. We | |
3839 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't | |
3840 | * actually have any way to find out the real value. The best we can | |
3841 | * do is go probing around in the usual places hoping we can find it. | |
3842 | */ | |
3843 | ||
3844 | static int stli_findeisabrds(void) | |
3845 | { | |
1f8ec435 | 3846 | struct stlibrd *brdp; |
1328d737 | 3847 | unsigned int iobase, eid, i; |
8f8f5a58 | 3848 | int brdnr, found = 0; |
1da177e4 LT |
3849 | |
3850 | /* | |
4ac4360b | 3851 | * Firstly check if this is an EISA system. If this is not an EISA system then |
1da177e4 LT |
3852 | * don't bother going any further! |
3853 | */ | |
4ac4360b AC |
3854 | if (EISA_bus) |
3855 | return 0; | |
1da177e4 LT |
3856 | |
3857 | /* | |
3858 | * Looks like an EISA system, so go searching for EISA boards. | |
3859 | */ | |
3860 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { | |
3861 | outb(0xff, (iobase + 0xc80)); | |
3862 | eid = inb(iobase + 0xc80); | |
3863 | eid |= inb(iobase + 0xc81) << 8; | |
3864 | if (eid != STL_EISAID) | |
3865 | continue; | |
3866 | ||
3867 | /* | |
3868 | * We have found a board. Need to check if this board was | |
3869 | * statically configured already (just in case!). | |
3870 | */ | |
3871 | for (i = 0; (i < STL_MAXBRDS); i++) { | |
3872 | brdp = stli_brds[i]; | |
4ac4360b | 3873 | if (brdp == NULL) |
1da177e4 LT |
3874 | continue; |
3875 | if (brdp->iobase == iobase) | |
3876 | break; | |
3877 | } | |
3878 | if (i < STL_MAXBRDS) | |
3879 | continue; | |
3880 | ||
3881 | /* | |
3882 | * We have found a Stallion board and it is not configured already. | |
3883 | * Allocate a board structure and initialize it. | |
3884 | */ | |
4ac4360b | 3885 | if ((brdp = stli_allocbrd()) == NULL) |
8f8f5a58 | 3886 | return found ? : -ENOMEM; |
1328d737 JS |
3887 | brdnr = stli_getbrdnr(); |
3888 | if (brdnr < 0) | |
8f8f5a58 | 3889 | return found ? : -ENOMEM; |
1328d737 | 3890 | brdp->brdnr = (unsigned int)brdnr; |
1da177e4 LT |
3891 | eid = inb(iobase + 0xc82); |
3892 | if (eid == ECP_EISAID) | |
3893 | brdp->brdtype = BRD_ECPE; | |
3894 | else if (eid == ONB_EISAID) | |
3895 | brdp->brdtype = BRD_ONBOARDE; | |
3896 | else | |
3897 | brdp->brdtype = BRD_UNKNOWN; | |
3898 | brdp->iobase = iobase; | |
3899 | outb(0x1, (iobase + 0xc84)); | |
3900 | if (stli_eisamemprobe(brdp)) | |
3901 | outb(0, (iobase + 0xc84)); | |
8f8f5a58 JS |
3902 | if (stli_brdinit(brdp) < 0) { |
3903 | kfree(brdp); | |
3904 | continue; | |
3905 | } | |
3906 | ||
b103b5cf | 3907 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 3908 | found++; |
1da177e4 LT |
3909 | } |
3910 | ||
8f8f5a58 | 3911 | return found; |
1da177e4 | 3912 | } |
a00f33f3 JS |
3913 | #else |
3914 | static inline int stli_findeisabrds(void) { return 0; } | |
3915 | #endif | |
1da177e4 LT |
3916 | |
3917 | /*****************************************************************************/ | |
3918 | ||
3919 | /* | |
3920 | * Find the next available board number that is free. | |
3921 | */ | |
3922 | ||
3923 | /*****************************************************************************/ | |
3924 | ||
1da177e4 LT |
3925 | /* |
3926 | * We have a Stallion board. Allocate a board structure and | |
3927 | * initialize it. Read its IO and MEMORY resources from PCI | |
3928 | * configuration space. | |
3929 | */ | |
3930 | ||
845bead4 JS |
3931 | static int __devinit stli_pciprobe(struct pci_dev *pdev, |
3932 | const struct pci_device_id *ent) | |
1da177e4 | 3933 | { |
1f8ec435 | 3934 | struct stlibrd *brdp; |
1328d737 | 3935 | int brdnr, retval = -EIO; |
845bead4 JS |
3936 | |
3937 | retval = pci_enable_device(pdev); | |
3938 | if (retval) | |
3939 | goto err; | |
3940 | brdp = stli_allocbrd(); | |
3941 | if (brdp == NULL) { | |
3942 | retval = -ENOMEM; | |
3943 | goto err; | |
3944 | } | |
b103b5cf | 3945 | mutex_lock(&stli_brdslock); |
1328d737 | 3946 | brdnr = stli_getbrdnr(); |
b103b5cf | 3947 | if (brdnr < 0) { |
1da177e4 LT |
3948 | printk(KERN_INFO "STALLION: too many boards found, " |
3949 | "maximum supported %d\n", STL_MAXBRDS); | |
b103b5cf | 3950 | mutex_unlock(&stli_brdslock); |
845bead4 JS |
3951 | retval = -EIO; |
3952 | goto err_fr; | |
1da177e4 | 3953 | } |
1328d737 | 3954 | brdp->brdnr = (unsigned int)brdnr; |
b103b5cf JS |
3955 | stli_brds[brdp->brdnr] = brdp; |
3956 | mutex_unlock(&stli_brdslock); | |
845bead4 | 3957 | brdp->brdtype = BRD_ECPPCI; |
1da177e4 LT |
3958 | /* |
3959 | * We have all resources from the board, so lets setup the actual | |
3960 | * board structure now. | |
3961 | */ | |
845bead4 JS |
3962 | brdp->iobase = pci_resource_start(pdev, 3); |
3963 | brdp->memaddr = pci_resource_start(pdev, 2); | |
3964 | retval = stli_brdinit(brdp); | |
3965 | if (retval) | |
b103b5cf | 3966 | goto err_null; |
845bead4 | 3967 | |
39014172 | 3968 | brdp->state |= BST_PROBED; |
845bead4 | 3969 | pci_set_drvdata(pdev, brdp); |
1da177e4 | 3970 | |
4ac4360b | 3971 | return 0; |
b103b5cf JS |
3972 | err_null: |
3973 | stli_brds[brdp->brdnr] = NULL; | |
845bead4 JS |
3974 | err_fr: |
3975 | kfree(brdp); | |
3976 | err: | |
3977 | return retval; | |
1da177e4 LT |
3978 | } |
3979 | ||
845bead4 JS |
3980 | static void stli_pciremove(struct pci_dev *pdev) |
3981 | { | |
1f8ec435 | 3982 | struct stlibrd *brdp = pci_get_drvdata(pdev); |
1da177e4 | 3983 | |
845bead4 | 3984 | stli_cleanup_ports(brdp); |
1da177e4 | 3985 | |
845bead4 JS |
3986 | iounmap(brdp->membase); |
3987 | if (brdp->iosize > 0) | |
3988 | release_region(brdp->iobase, brdp->iosize); | |
1da177e4 | 3989 | |
845bead4 JS |
3990 | stli_brds[brdp->brdnr] = NULL; |
3991 | kfree(brdp); | |
1da177e4 LT |
3992 | } |
3993 | ||
845bead4 JS |
3994 | static struct pci_driver stli_pcidriver = { |
3995 | .name = "istallion", | |
3996 | .id_table = istallion_pci_tbl, | |
3997 | .probe = stli_pciprobe, | |
3998 | .remove = __devexit_p(stli_pciremove) | |
3999 | }; | |
1da177e4 LT |
4000 | /*****************************************************************************/ |
4001 | ||
4002 | /* | |
4003 | * Allocate a new board structure. Fill out the basic info in it. | |
4004 | */ | |
4005 | ||
1f8ec435 | 4006 | static struct stlibrd *stli_allocbrd(void) |
1da177e4 | 4007 | { |
1f8ec435 | 4008 | struct stlibrd *brdp; |
1da177e4 | 4009 | |
1f8ec435 | 4010 | brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL); |
b0b4ed72 | 4011 | if (!brdp) { |
1da177e4 | 4012 | printk(KERN_ERR "STALLION: failed to allocate memory " |
1f8ec435 | 4013 | "(size=%Zd)\n", sizeof(struct stlibrd)); |
b0b4ed72 | 4014 | return NULL; |
1da177e4 | 4015 | } |
1da177e4 | 4016 | brdp->magic = STLI_BOARDMAGIC; |
4ac4360b | 4017 | return brdp; |
1da177e4 LT |
4018 | } |
4019 | ||
4020 | /*****************************************************************************/ | |
4021 | ||
4022 | /* | |
4023 | * Scan through all the boards in the configuration and see what we | |
4024 | * can find. | |
4025 | */ | |
4026 | ||
4027 | static int stli_initbrds(void) | |
4028 | { | |
1f8ec435 JS |
4029 | struct stlibrd *brdp, *nxtbrdp; |
4030 | struct stlconf conf; | |
8f8f5a58 | 4031 | unsigned int i, j, found = 0; |
1328d737 | 4032 | int retval; |
1da177e4 | 4033 | |
a3f8d9d5 JS |
4034 | for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp); |
4035 | stli_nrbrds++) { | |
4036 | memset(&conf, 0, sizeof(conf)); | |
4037 | if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0) | |
4038 | continue; | |
4ac4360b | 4039 | if ((brdp = stli_allocbrd()) == NULL) |
a3f8d9d5 JS |
4040 | continue; |
4041 | brdp->brdnr = stli_nrbrds; | |
4042 | brdp->brdtype = conf.brdtype; | |
4043 | brdp->iobase = conf.ioaddr1; | |
4044 | brdp->memaddr = conf.memaddr; | |
8f8f5a58 JS |
4045 | if (stli_brdinit(brdp) < 0) { |
4046 | kfree(brdp); | |
4047 | continue; | |
4048 | } | |
b103b5cf | 4049 | stli_brds[brdp->brdnr] = brdp; |
8f8f5a58 | 4050 | found++; |
1da177e4 LT |
4051 | } |
4052 | ||
8f8f5a58 JS |
4053 | retval = stli_findeisabrds(); |
4054 | if (retval > 0) | |
4055 | found += retval; | |
845bead4 JS |
4056 | |
4057 | retval = pci_register_driver(&stli_pcidriver); | |
8f8f5a58 JS |
4058 | if (retval && found == 0) { |
4059 | printk(KERN_ERR "Neither isa nor eisa cards found nor pci " | |
4060 | "driver can be registered!\n"); | |
4061 | goto err; | |
4062 | } | |
1da177e4 LT |
4063 | |
4064 | /* | |
4065 | * All found boards are initialized. Now for a little optimization, if | |
4066 | * no boards are sharing the "shared memory" regions then we can just | |
4067 | * leave them all enabled. This is in fact the usual case. | |
4068 | */ | |
4069 | stli_shared = 0; | |
4070 | if (stli_nrbrds > 1) { | |
4071 | for (i = 0; (i < stli_nrbrds); i++) { | |
4072 | brdp = stli_brds[i]; | |
4ac4360b | 4073 | if (brdp == NULL) |
1da177e4 LT |
4074 | continue; |
4075 | for (j = i + 1; (j < stli_nrbrds); j++) { | |
4076 | nxtbrdp = stli_brds[j]; | |
4ac4360b | 4077 | if (nxtbrdp == NULL) |
1da177e4 LT |
4078 | continue; |
4079 | if ((brdp->membase >= nxtbrdp->membase) && | |
4080 | (brdp->membase <= (nxtbrdp->membase + | |
4081 | nxtbrdp->memsize - 1))) { | |
4082 | stli_shared++; | |
4083 | break; | |
4084 | } | |
4085 | } | |
4086 | } | |
4087 | } | |
4088 | ||
4089 | if (stli_shared == 0) { | |
4090 | for (i = 0; (i < stli_nrbrds); i++) { | |
4091 | brdp = stli_brds[i]; | |
4ac4360b | 4092 | if (brdp == NULL) |
1da177e4 LT |
4093 | continue; |
4094 | if (brdp->state & BST_FOUND) { | |
4095 | EBRDENABLE(brdp); | |
4096 | brdp->enable = NULL; | |
4097 | brdp->disable = NULL; | |
4098 | } | |
4099 | } | |
4100 | } | |
4101 | ||
4ac4360b | 4102 | return 0; |
8f8f5a58 JS |
4103 | err: |
4104 | return retval; | |
1da177e4 LT |
4105 | } |
4106 | ||
4107 | /*****************************************************************************/ | |
4108 | ||
4109 | /* | |
4110 | * Code to handle an "staliomem" read operation. This device is the | |
4111 | * contents of the board shared memory. It is used for down loading | |
4112 | * the slave image (and debugging :-) | |
4113 | */ | |
4114 | ||
4115 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) | |
4116 | { | |
4ac4360b | 4117 | unsigned long flags; |
29756fa3 | 4118 | void __iomem *memptr; |
1f8ec435 | 4119 | struct stlibrd *brdp; |
1328d737 JS |
4120 | unsigned int brdnr; |
4121 | int size, n; | |
4ac4360b AC |
4122 | void *p; |
4123 | loff_t off = *offp; | |
1da177e4 | 4124 | |
a7113a96 | 4125 | brdnr = iminor(fp->f_path.dentry->d_inode); |
1da177e4 | 4126 | if (brdnr >= stli_nrbrds) |
4ac4360b | 4127 | return -ENODEV; |
1da177e4 | 4128 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4129 | if (brdp == NULL) |
4130 | return -ENODEV; | |
1da177e4 | 4131 | if (brdp->state == 0) |
4ac4360b AC |
4132 | return -ENODEV; |
4133 | if (off >= brdp->memsize || off + count < off) | |
4134 | return 0; | |
1da177e4 | 4135 | |
a3f8d9d5 | 4136 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
4137 | |
4138 | /* | |
4139 | * Copy the data a page at a time | |
4140 | */ | |
4141 | ||
4142 | p = (void *)__get_free_page(GFP_KERNEL); | |
4143 | if(p == NULL) | |
4144 | return -ENOMEM; | |
1da177e4 | 4145 | |
1da177e4 | 4146 | while (size > 0) { |
4ac4360b AC |
4147 | spin_lock_irqsave(&brd_lock, flags); |
4148 | EBRDENABLE(brdp); | |
29756fa3 | 4149 | memptr = EBRDGETMEMPTR(brdp, off); |
a3f8d9d5 JS |
4150 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
4151 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
4152 | memcpy_fromio(p, memptr, n); |
4153 | EBRDDISABLE(brdp); | |
4154 | spin_unlock_irqrestore(&brd_lock, flags); | |
4155 | if (copy_to_user(buf, p, n)) { | |
1da177e4 LT |
4156 | count = -EFAULT; |
4157 | goto out; | |
4158 | } | |
4ac4360b | 4159 | off += n; |
1da177e4 LT |
4160 | buf += n; |
4161 | size -= n; | |
4162 | } | |
4163 | out: | |
4ac4360b AC |
4164 | *offp = off; |
4165 | free_page((unsigned long)p); | |
4166 | return count; | |
1da177e4 LT |
4167 | } |
4168 | ||
4169 | /*****************************************************************************/ | |
4170 | ||
4171 | /* | |
4172 | * Code to handle an "staliomem" write operation. This device is the | |
4173 | * contents of the board shared memory. It is used for down loading | |
4174 | * the slave image (and debugging :-) | |
4ac4360b AC |
4175 | * |
4176 | * FIXME: copy under lock | |
1da177e4 LT |
4177 | */ |
4178 | ||
4179 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) | |
4180 | { | |
4ac4360b | 4181 | unsigned long flags; |
29756fa3 | 4182 | void __iomem *memptr; |
1f8ec435 | 4183 | struct stlibrd *brdp; |
4ac4360b | 4184 | char __user *chbuf; |
1328d737 JS |
4185 | unsigned int brdnr; |
4186 | int size, n; | |
4ac4360b AC |
4187 | void *p; |
4188 | loff_t off = *offp; | |
1da177e4 | 4189 | |
a7113a96 | 4190 | brdnr = iminor(fp->f_path.dentry->d_inode); |
4ac4360b | 4191 | |
1da177e4 | 4192 | if (brdnr >= stli_nrbrds) |
4ac4360b | 4193 | return -ENODEV; |
1da177e4 | 4194 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4195 | if (brdp == NULL) |
4196 | return -ENODEV; | |
1da177e4 | 4197 | if (brdp->state == 0) |
4ac4360b AC |
4198 | return -ENODEV; |
4199 | if (off >= brdp->memsize || off + count < off) | |
4200 | return 0; | |
1da177e4 LT |
4201 | |
4202 | chbuf = (char __user *) buf; | |
a3f8d9d5 | 4203 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
4204 | |
4205 | /* | |
4206 | * Copy the data a page at a time | |
4207 | */ | |
4208 | ||
4209 | p = (void *)__get_free_page(GFP_KERNEL); | |
4210 | if(p == NULL) | |
4211 | return -ENOMEM; | |
1da177e4 | 4212 | |
1da177e4 | 4213 | while (size > 0) { |
a3f8d9d5 JS |
4214 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
4215 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
4216 | if (copy_from_user(p, chbuf, n)) { |
4217 | if (count == 0) | |
4218 | count = -EFAULT; | |
1da177e4 LT |
4219 | goto out; |
4220 | } | |
4ac4360b AC |
4221 | spin_lock_irqsave(&brd_lock, flags); |
4222 | EBRDENABLE(brdp); | |
29756fa3 | 4223 | memptr = EBRDGETMEMPTR(brdp, off); |
4ac4360b AC |
4224 | memcpy_toio(memptr, p, n); |
4225 | EBRDDISABLE(brdp); | |
4226 | spin_unlock_irqrestore(&brd_lock, flags); | |
4227 | off += n; | |
1da177e4 LT |
4228 | chbuf += n; |
4229 | size -= n; | |
4230 | } | |
4231 | out: | |
4ac4360b AC |
4232 | free_page((unsigned long) p); |
4233 | *offp = off; | |
4234 | return count; | |
1da177e4 LT |
4235 | } |
4236 | ||
4237 | /*****************************************************************************/ | |
4238 | ||
4239 | /* | |
4240 | * Return the board stats structure to user app. | |
4241 | */ | |
4242 | ||
4243 | static int stli_getbrdstats(combrd_t __user *bp) | |
4244 | { | |
1f8ec435 | 4245 | struct stlibrd *brdp; |
1328d737 | 4246 | unsigned int i; |
1da177e4 LT |
4247 | |
4248 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) | |
4249 | return -EFAULT; | |
4250 | if (stli_brdstats.brd >= STL_MAXBRDS) | |
4ac4360b | 4251 | return -ENODEV; |
1da177e4 | 4252 | brdp = stli_brds[stli_brdstats.brd]; |
4ac4360b AC |
4253 | if (brdp == NULL) |
4254 | return -ENODEV; | |
1da177e4 LT |
4255 | |
4256 | memset(&stli_brdstats, 0, sizeof(combrd_t)); | |
4257 | stli_brdstats.brd = brdp->brdnr; | |
4258 | stli_brdstats.type = brdp->brdtype; | |
4259 | stli_brdstats.hwid = 0; | |
4260 | stli_brdstats.state = brdp->state; | |
4261 | stli_brdstats.ioaddr = brdp->iobase; | |
4262 | stli_brdstats.memaddr = brdp->memaddr; | |
4263 | stli_brdstats.nrpanels = brdp->nrpanels; | |
4264 | stli_brdstats.nrports = brdp->nrports; | |
4265 | for (i = 0; (i < brdp->nrpanels); i++) { | |
4266 | stli_brdstats.panels[i].panel = i; | |
4267 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; | |
4268 | stli_brdstats.panels[i].nrports = brdp->panels[i]; | |
4269 | } | |
4270 | ||
4271 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) | |
4272 | return -EFAULT; | |
4ac4360b | 4273 | return 0; |
1da177e4 LT |
4274 | } |
4275 | ||
4276 | /*****************************************************************************/ | |
4277 | ||
4278 | /* | |
4279 | * Resolve the referenced port number into a port struct pointer. | |
4280 | */ | |
4281 | ||
1328d737 JS |
4282 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, |
4283 | unsigned int portnr) | |
1da177e4 | 4284 | { |
1f8ec435 | 4285 | struct stlibrd *brdp; |
1328d737 | 4286 | unsigned int i; |
1da177e4 | 4287 | |
1328d737 | 4288 | if (brdnr >= STL_MAXBRDS) |
4ac4360b | 4289 | return NULL; |
1da177e4 | 4290 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4291 | if (brdp == NULL) |
4292 | return NULL; | |
1da177e4 LT |
4293 | for (i = 0; (i < panelnr); i++) |
4294 | portnr += brdp->panels[i]; | |
1328d737 | 4295 | if (portnr >= brdp->nrports) |
4ac4360b AC |
4296 | return NULL; |
4297 | return brdp->ports[portnr]; | |
1da177e4 LT |
4298 | } |
4299 | ||
4300 | /*****************************************************************************/ | |
4301 | ||
4302 | /* | |
4303 | * Return the port stats structure to user app. A NULL port struct | |
4304 | * pointer passed in means that we need to find out from the app | |
4305 | * what port to get stats for (used through board control device). | |
4306 | */ | |
4307 | ||
1f8ec435 | 4308 | static int stli_portcmdstats(struct stliport *portp) |
1da177e4 LT |
4309 | { |
4310 | unsigned long flags; | |
1f8ec435 | 4311 | struct stlibrd *brdp; |
1da177e4 LT |
4312 | int rc; |
4313 | ||
4314 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4315 | ||
4ac4360b AC |
4316 | if (portp == NULL) |
4317 | return -ENODEV; | |
1da177e4 | 4318 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
4319 | if (brdp == NULL) |
4320 | return -ENODEV; | |
1da177e4 LT |
4321 | |
4322 | if (brdp->state & BST_STARTED) { | |
4323 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, | |
4324 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) | |
4ac4360b | 4325 | return rc; |
1da177e4 LT |
4326 | } else { |
4327 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); | |
4328 | } | |
4329 | ||
4330 | stli_comstats.brd = portp->brdnr; | |
4331 | stli_comstats.panel = portp->panelnr; | |
4332 | stli_comstats.port = portp->portnr; | |
4333 | stli_comstats.state = portp->state; | |
4334 | stli_comstats.flags = portp->flags; | |
4335 | ||
4ac4360b AC |
4336 | spin_lock_irqsave(&brd_lock, flags); |
4337 | if (portp->tty != NULL) { | |
1da177e4 LT |
4338 | if (portp->tty->driver_data == portp) { |
4339 | stli_comstats.ttystate = portp->tty->flags; | |
4ac4360b AC |
4340 | stli_comstats.rxbuffered = -1; |
4341 | if (portp->tty->termios != NULL) { | |
1da177e4 LT |
4342 | stli_comstats.cflags = portp->tty->termios->c_cflag; |
4343 | stli_comstats.iflags = portp->tty->termios->c_iflag; | |
4344 | stli_comstats.oflags = portp->tty->termios->c_oflag; | |
4345 | stli_comstats.lflags = portp->tty->termios->c_lflag; | |
4346 | } | |
4347 | } | |
4348 | } | |
4ac4360b | 4349 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
4350 | |
4351 | stli_comstats.txtotal = stli_cdkstats.txchars; | |
4352 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; | |
4353 | stli_comstats.txbuffered = stli_cdkstats.txringq; | |
4354 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; | |
4355 | stli_comstats.rxoverrun = stli_cdkstats.overruns; | |
4356 | stli_comstats.rxparity = stli_cdkstats.parity; | |
4357 | stli_comstats.rxframing = stli_cdkstats.framing; | |
4358 | stli_comstats.rxlost = stli_cdkstats.ringover; | |
4359 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; | |
4360 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; | |
4361 | stli_comstats.txxon = stli_cdkstats.txstart; | |
4362 | stli_comstats.txxoff = stli_cdkstats.txstop; | |
4363 | stli_comstats.rxxon = stli_cdkstats.rxstart; | |
4364 | stli_comstats.rxxoff = stli_cdkstats.rxstop; | |
4365 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; | |
4366 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; | |
4367 | stli_comstats.modem = stli_cdkstats.dcdcnt; | |
4368 | stli_comstats.hwid = stli_cdkstats.hwid; | |
4369 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); | |
4370 | ||
4ac4360b | 4371 | return 0; |
1da177e4 LT |
4372 | } |
4373 | ||
4374 | /*****************************************************************************/ | |
4375 | ||
4376 | /* | |
4377 | * Return the port stats structure to user app. A NULL port struct | |
4378 | * pointer passed in means that we need to find out from the app | |
4379 | * what port to get stats for (used through board control device). | |
4380 | */ | |
4381 | ||
1f8ec435 | 4382 | static int stli_getportstats(struct stliport *portp, comstats_t __user *cp) |
1da177e4 | 4383 | { |
1f8ec435 | 4384 | struct stlibrd *brdp; |
4ac4360b | 4385 | int rc; |
1da177e4 LT |
4386 | |
4387 | if (!portp) { | |
4388 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4389 | return -EFAULT; | |
4390 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4391 | stli_comstats.port); | |
4392 | if (!portp) | |
4393 | return -ENODEV; | |
4394 | } | |
4395 | ||
4396 | brdp = stli_brds[portp->brdnr]; | |
4397 | if (!brdp) | |
4398 | return -ENODEV; | |
4399 | ||
4400 | if ((rc = stli_portcmdstats(portp)) < 0) | |
4401 | return rc; | |
4402 | ||
4403 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? | |
4404 | -EFAULT : 0; | |
4405 | } | |
4406 | ||
4407 | /*****************************************************************************/ | |
4408 | ||
4409 | /* | |
4410 | * Clear the port stats structure. We also return it zeroed out... | |
4411 | */ | |
4412 | ||
1f8ec435 | 4413 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp) |
1da177e4 | 4414 | { |
1f8ec435 | 4415 | struct stlibrd *brdp; |
4ac4360b | 4416 | int rc; |
1da177e4 LT |
4417 | |
4418 | if (!portp) { | |
4419 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4420 | return -EFAULT; | |
4421 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4422 | stli_comstats.port); | |
4423 | if (!portp) | |
4424 | return -ENODEV; | |
4425 | } | |
4426 | ||
4427 | brdp = stli_brds[portp->brdnr]; | |
4428 | if (!brdp) | |
4429 | return -ENODEV; | |
4430 | ||
4431 | if (brdp->state & BST_STARTED) { | |
4432 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) | |
4433 | return rc; | |
4434 | } | |
4435 | ||
4436 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4437 | stli_comstats.brd = portp->brdnr; | |
4438 | stli_comstats.panel = portp->panelnr; | |
4439 | stli_comstats.port = portp->portnr; | |
4440 | ||
4441 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) | |
4442 | return -EFAULT; | |
4443 | return 0; | |
4444 | } | |
4445 | ||
4446 | /*****************************************************************************/ | |
4447 | ||
4448 | /* | |
4449 | * Return the entire driver ports structure to a user app. | |
4450 | */ | |
4451 | ||
1f8ec435 | 4452 | static int stli_getportstruct(struct stliport __user *arg) |
1da177e4 | 4453 | { |
1328d737 | 4454 | struct stliport stli_dummyport; |
1f8ec435 | 4455 | struct stliport *portp; |
1da177e4 | 4456 | |
1f8ec435 | 4457 | if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport))) |
1da177e4 LT |
4458 | return -EFAULT; |
4459 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, | |
4460 | stli_dummyport.portnr); | |
4461 | if (!portp) | |
4462 | return -ENODEV; | |
1f8ec435 | 4463 | if (copy_to_user(arg, portp, sizeof(struct stliport))) |
1da177e4 LT |
4464 | return -EFAULT; |
4465 | return 0; | |
4466 | } | |
4467 | ||
4468 | /*****************************************************************************/ | |
4469 | ||
4470 | /* | |
4471 | * Return the entire driver board structure to a user app. | |
4472 | */ | |
4473 | ||
1f8ec435 | 4474 | static int stli_getbrdstruct(struct stlibrd __user *arg) |
1da177e4 | 4475 | { |
1328d737 | 4476 | struct stlibrd stli_dummybrd; |
1f8ec435 | 4477 | struct stlibrd *brdp; |
1da177e4 | 4478 | |
1f8ec435 | 4479 | if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd))) |
1da177e4 | 4480 | return -EFAULT; |
1328d737 | 4481 | if (stli_dummybrd.brdnr >= STL_MAXBRDS) |
1da177e4 LT |
4482 | return -ENODEV; |
4483 | brdp = stli_brds[stli_dummybrd.brdnr]; | |
4484 | if (!brdp) | |
4485 | return -ENODEV; | |
1f8ec435 | 4486 | if (copy_to_user(arg, brdp, sizeof(struct stlibrd))) |
1da177e4 LT |
4487 | return -EFAULT; |
4488 | return 0; | |
4489 | } | |
4490 | ||
4491 | /*****************************************************************************/ | |
4492 | ||
4493 | /* | |
4494 | * The "staliomem" device is also required to do some special operations on | |
4495 | * the board. We need to be able to send an interrupt to the board, | |
4496 | * reset it, and start/stop it. | |
4497 | */ | |
4498 | ||
4499 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg) | |
4500 | { | |
1f8ec435 | 4501 | struct stlibrd *brdp; |
4ac4360b | 4502 | int brdnr, rc, done; |
1da177e4 LT |
4503 | void __user *argp = (void __user *)arg; |
4504 | ||
1da177e4 LT |
4505 | /* |
4506 | * First up handle the board independent ioctls. | |
4507 | */ | |
4508 | done = 0; | |
4509 | rc = 0; | |
4510 | ||
4511 | switch (cmd) { | |
4512 | case COM_GETPORTSTATS: | |
4513 | rc = stli_getportstats(NULL, argp); | |
4514 | done++; | |
4515 | break; | |
4516 | case COM_CLRPORTSTATS: | |
4517 | rc = stli_clrportstats(NULL, argp); | |
4518 | done++; | |
4519 | break; | |
4520 | case COM_GETBRDSTATS: | |
4521 | rc = stli_getbrdstats(argp); | |
4522 | done++; | |
4523 | break; | |
4524 | case COM_READPORT: | |
4525 | rc = stli_getportstruct(argp); | |
4526 | done++; | |
4527 | break; | |
4528 | case COM_READBOARD: | |
4529 | rc = stli_getbrdstruct(argp); | |
4530 | done++; | |
4531 | break; | |
4532 | } | |
4533 | ||
4534 | if (done) | |
4ac4360b | 4535 | return rc; |
1da177e4 LT |
4536 | |
4537 | /* | |
4538 | * Now handle the board specific ioctls. These all depend on the | |
4539 | * minor number of the device they were called from. | |
4540 | */ | |
4541 | brdnr = iminor(ip); | |
4542 | if (brdnr >= STL_MAXBRDS) | |
4ac4360b | 4543 | return -ENODEV; |
1da177e4 LT |
4544 | brdp = stli_brds[brdnr]; |
4545 | if (!brdp) | |
4ac4360b | 4546 | return -ENODEV; |
1da177e4 | 4547 | if (brdp->state == 0) |
4ac4360b | 4548 | return -ENODEV; |
1da177e4 LT |
4549 | |
4550 | switch (cmd) { | |
4551 | case STL_BINTR: | |
4552 | EBRDINTR(brdp); | |
4553 | break; | |
4554 | case STL_BSTART: | |
4555 | rc = stli_startbrd(brdp); | |
4556 | break; | |
4557 | case STL_BSTOP: | |
4558 | brdp->state &= ~BST_STARTED; | |
4559 | break; | |
4560 | case STL_BRESET: | |
4561 | brdp->state &= ~BST_STARTED; | |
4562 | EBRDRESET(brdp); | |
4563 | if (stli_shared == 0) { | |
4564 | if (brdp->reenable != NULL) | |
4565 | (* brdp->reenable)(brdp); | |
4566 | } | |
4567 | break; | |
4568 | default: | |
4569 | rc = -ENOIOCTLCMD; | |
4570 | break; | |
4571 | } | |
4ac4360b | 4572 | return rc; |
1da177e4 LT |
4573 | } |
4574 | ||
b68e31d0 | 4575 | static const struct tty_operations stli_ops = { |
1da177e4 LT |
4576 | .open = stli_open, |
4577 | .close = stli_close, | |
4578 | .write = stli_write, | |
4579 | .put_char = stli_putchar, | |
4580 | .flush_chars = stli_flushchars, | |
4581 | .write_room = stli_writeroom, | |
4582 | .chars_in_buffer = stli_charsinbuffer, | |
4583 | .ioctl = stli_ioctl, | |
4584 | .set_termios = stli_settermios, | |
4585 | .throttle = stli_throttle, | |
4586 | .unthrottle = stli_unthrottle, | |
4587 | .stop = stli_stop, | |
4588 | .start = stli_start, | |
4589 | .hangup = stli_hangup, | |
4590 | .flush_buffer = stli_flushbuffer, | |
4591 | .break_ctl = stli_breakctl, | |
4592 | .wait_until_sent = stli_waituntilsent, | |
4593 | .send_xchar = stli_sendxchar, | |
4594 | .read_proc = stli_readproc, | |
4595 | .tiocmget = stli_tiocmget, | |
4596 | .tiocmset = stli_tiocmset, | |
4597 | }; | |
4598 | ||
4599 | /*****************************************************************************/ | |
4600 | ||
672b2714 | 4601 | static int __init stli_init(void) |
1da177e4 LT |
4602 | { |
4603 | int i; | |
4604 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); | |
4605 | ||
4ac4360b AC |
4606 | spin_lock_init(&stli_lock); |
4607 | spin_lock_init(&brd_lock); | |
4608 | ||
1da177e4 LT |
4609 | stli_initbrds(); |
4610 | ||
4611 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); | |
4612 | if (!stli_serial) | |
4613 | return -ENOMEM; | |
4614 | ||
4615 | /* | |
4616 | * Allocate a temporary write buffer. | |
4617 | */ | |
b0b4ed72 TK |
4618 | stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); |
4619 | if (!stli_txcookbuf) | |
1da177e4 LT |
4620 | printk(KERN_ERR "STALLION: failed to allocate memory " |
4621 | "(size=%d)\n", STLI_TXBUFSIZE); | |
4622 | ||
4623 | /* | |
4624 | * Set up a character driver for the shared memory region. We need this | |
4625 | * to down load the slave code image. Also it is a useful debugging tool. | |
4626 | */ | |
4627 | if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem)) | |
4628 | printk(KERN_ERR "STALLION: failed to register serial memory " | |
4629 | "device\n"); | |
4630 | ||
ca8eca68 | 4631 | istallion_class = class_create(THIS_MODULE, "staliomem"); |
7c69ef79 | 4632 | for (i = 0; i < 4; i++) |
53f46542 GKH |
4633 | class_device_create(istallion_class, NULL, |
4634 | MKDEV(STL_SIOMEMMAJOR, i), | |
1da177e4 | 4635 | NULL, "staliomem%d", i); |
1da177e4 LT |
4636 | |
4637 | /* | |
4638 | * Set up the tty driver structure and register us as a driver. | |
4639 | */ | |
4640 | stli_serial->owner = THIS_MODULE; | |
4641 | stli_serial->driver_name = stli_drvname; | |
4642 | stli_serial->name = stli_serialname; | |
4643 | stli_serial->major = STL_SERIALMAJOR; | |
4644 | stli_serial->minor_start = 0; | |
4645 | stli_serial->type = TTY_DRIVER_TYPE_SERIAL; | |
4646 | stli_serial->subtype = SERIAL_TYPE_NORMAL; | |
4647 | stli_serial->init_termios = stli_deftermios; | |
4648 | stli_serial->flags = TTY_DRIVER_REAL_RAW; | |
4649 | tty_set_operations(stli_serial, &stli_ops); | |
4650 | ||
4651 | if (tty_register_driver(stli_serial)) { | |
4652 | put_tty_driver(stli_serial); | |
4653 | printk(KERN_ERR "STALLION: failed to register serial driver\n"); | |
4654 | return -EBUSY; | |
4655 | } | |
4ac4360b | 4656 | return 0; |
1da177e4 LT |
4657 | } |
4658 | ||
4659 | /*****************************************************************************/ |