Commit | Line | Data |
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1da177e4 LT |
1 | /*****************************************************************************/ |
2 | ||
3 | /* | |
4 | * istallion.c -- stallion intelligent multiport serial driver. | |
5 | * | |
6 | * Copyright (C) 1996-1999 Stallion Technologies | |
7 | * Copyright (C) 1994-1996 Greg Ungerer. | |
8 | * | |
9 | * This code is loosely based on the Linux serial driver, written by | |
10 | * Linus Torvalds, Theodore T'so and others. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
1da177e4 LT |
17 | */ |
18 | ||
19 | /*****************************************************************************/ | |
20 | ||
1da177e4 LT |
21 | #include <linux/module.h> |
22 | #include <linux/slab.h> | |
23 | #include <linux/interrupt.h> | |
24 | #include <linux/tty.h> | |
25 | #include <linux/tty_flip.h> | |
26 | #include <linux/serial.h> | |
27 | #include <linux/cdk.h> | |
28 | #include <linux/comstats.h> | |
29 | #include <linux/istallion.h> | |
30 | #include <linux/ioport.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/init.h> | |
1da177e4 LT |
33 | #include <linux/device.h> |
34 | #include <linux/wait.h> | |
4ac4360b | 35 | #include <linux/eisa.h> |
a3f8d9d5 | 36 | #include <linux/ctype.h> |
1da177e4 LT |
37 | |
38 | #include <asm/io.h> | |
39 | #include <asm/uaccess.h> | |
40 | ||
1da177e4 | 41 | #include <linux/pci.h> |
1da177e4 LT |
42 | |
43 | /*****************************************************************************/ | |
44 | ||
45 | /* | |
46 | * Define different board types. Not all of the following board types | |
47 | * are supported by this driver. But I will use the standard "assigned" | |
48 | * board numbers. Currently supported boards are abbreviated as: | |
49 | * ECP = EasyConnection 8/64, ONB = ONboard, BBY = Brumby and | |
50 | * STAL = Stallion. | |
51 | */ | |
52 | #define BRD_UNKNOWN 0 | |
53 | #define BRD_STALLION 1 | |
54 | #define BRD_BRUMBY4 2 | |
55 | #define BRD_ONBOARD2 3 | |
56 | #define BRD_ONBOARD 4 | |
1da177e4 | 57 | #define BRD_ONBOARDE 7 |
1da177e4 LT |
58 | #define BRD_ECP 23 |
59 | #define BRD_ECPE 24 | |
60 | #define BRD_ECPMC 25 | |
1da177e4 LT |
61 | #define BRD_ECPPCI 29 |
62 | ||
63 | #define BRD_BRUMBY BRD_BRUMBY4 | |
64 | ||
65 | /* | |
66 | * Define a configuration structure to hold the board configuration. | |
67 | * Need to set this up in the code (for now) with the boards that are | |
68 | * to be configured into the system. This is what needs to be modified | |
69 | * when adding/removing/modifying boards. Each line entry in the | |
70 | * stli_brdconf[] array is a board. Each line contains io/irq/memory | |
71 | * ranges for that board (as well as what type of board it is). | |
72 | * Some examples: | |
73 | * { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 }, | |
74 | * This line will configure an EasyConnection 8/64 at io address 2a0, | |
75 | * and shared memory address of cc000. Multiple EasyConnection 8/64 | |
76 | * boards can share the same shared memory address space. No interrupt | |
77 | * is required for this board type. | |
78 | * Another example: | |
79 | * { BRD_ECPE, 0x5000, 0, 0x80000000, 0, 0 }, | |
80 | * This line will configure an EasyConnection 8/64 EISA in slot 5 and | |
81 | * shared memory address of 0x80000000 (2 GByte). Multiple | |
82 | * EasyConnection 8/64 EISA boards can share the same shared memory | |
83 | * address space. No interrupt is required for this board type. | |
84 | * Another example: | |
85 | * { BRD_ONBOARD, 0x240, 0, 0xd0000, 0, 0 }, | |
86 | * This line will configure an ONboard (ISA type) at io address 240, | |
87 | * and shared memory address of d0000. Multiple ONboards can share | |
88 | * the same shared memory address space. No interrupt required. | |
89 | * Another example: | |
90 | * { BRD_BRUMBY4, 0x360, 0, 0xc8000, 0, 0 }, | |
91 | * This line will configure a Brumby board (any number of ports!) at | |
92 | * io address 360 and shared memory address of c8000. All Brumby boards | |
93 | * configured into a system must have their own separate io and memory | |
94 | * addresses. No interrupt is required. | |
95 | * Another example: | |
96 | * { BRD_STALLION, 0x330, 0, 0xd0000, 0, 0 }, | |
97 | * This line will configure an original Stallion board at io address 330 | |
98 | * and shared memory address d0000 (this would only be valid for a "V4.0" | |
99 | * or Rev.O Stallion board). All Stallion boards configured into the | |
100 | * system must have their own separate io and memory addresses. No | |
101 | * interrupt is required. | |
102 | */ | |
103 | ||
1f8ec435 | 104 | struct stlconf { |
1da177e4 LT |
105 | int brdtype; |
106 | int ioaddr1; | |
107 | int ioaddr2; | |
108 | unsigned long memaddr; | |
109 | int irq; | |
110 | int irqtype; | |
1f8ec435 | 111 | }; |
1da177e4 | 112 | |
1328d737 | 113 | static unsigned int stli_nrbrds; |
1da177e4 | 114 | |
4ac4360b AC |
115 | /* stli_lock must NOT be taken holding brd_lock */ |
116 | static spinlock_t stli_lock; /* TTY logic lock */ | |
117 | static spinlock_t brd_lock; /* Board logic lock */ | |
118 | ||
1da177e4 LT |
119 | /* |
120 | * There is some experimental EISA board detection code in this driver. | |
121 | * By default it is disabled, but for those that want to try it out, | |
122 | * then set the define below to be 1. | |
123 | */ | |
124 | #define STLI_EISAPROBE 0 | |
125 | ||
126 | /*****************************************************************************/ | |
127 | ||
128 | /* | |
129 | * Define some important driver characteristics. Device major numbers | |
130 | * allocated as per Linux Device Registry. | |
131 | */ | |
132 | #ifndef STL_SIOMEMMAJOR | |
133 | #define STL_SIOMEMMAJOR 28 | |
134 | #endif | |
135 | #ifndef STL_SERIALMAJOR | |
136 | #define STL_SERIALMAJOR 24 | |
137 | #endif | |
138 | #ifndef STL_CALLOUTMAJOR | |
139 | #define STL_CALLOUTMAJOR 25 | |
140 | #endif | |
141 | ||
142 | /*****************************************************************************/ | |
143 | ||
144 | /* | |
145 | * Define our local driver identity first. Set up stuff to deal with | |
146 | * all the local structures required by a serial tty driver. | |
147 | */ | |
148 | static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver"; | |
149 | static char *stli_drvname = "istallion"; | |
150 | static char *stli_drvversion = "5.6.0"; | |
151 | static char *stli_serialname = "ttyE"; | |
152 | ||
153 | static struct tty_driver *stli_serial; | |
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 | ||
1f8ec435 | 192 | static struct stlibrd *stli_brds[STL_MAXBRDS]; |
1da177e4 LT |
193 | |
194 | static int stli_shared; | |
195 | ||
196 | /* | |
197 | * Per board state flags. Used with the state field of the board struct. | |
198 | * Not really much here... All we need to do is keep track of whether | |
199 | * the board has been detected, and whether it is actually running a slave | |
200 | * or not. | |
201 | */ | |
202 | #define BST_FOUND 0x1 | |
203 | #define BST_STARTED 0x2 | |
204 | ||
205 | /* | |
206 | * Define the set of port state flags. These are marked for internal | |
207 | * state purposes only, usually to do with the state of communications | |
208 | * with the slave. Most of them need to be updated atomically, so always | |
209 | * use the bit setting operations (unless protected by cli/sti). | |
210 | */ | |
211 | #define ST_INITIALIZING 1 | |
212 | #define ST_OPENING 2 | |
213 | #define ST_CLOSING 3 | |
214 | #define ST_CMDING 4 | |
215 | #define ST_TXBUSY 5 | |
216 | #define ST_RXING 6 | |
217 | #define ST_DOFLUSHRX 7 | |
218 | #define ST_DOFLUSHTX 8 | |
219 | #define ST_DOSIGS 9 | |
220 | #define ST_RXSTOP 10 | |
221 | #define ST_GETSIGS 11 | |
222 | ||
223 | /* | |
224 | * Define an array of board names as printable strings. Handy for | |
225 | * referencing boards when printing trace and stuff. | |
226 | */ | |
227 | static char *stli_brdnames[] = { | |
228 | "Unknown", | |
229 | "Stallion", | |
230 | "Brumby", | |
231 | "ONboard-MC", | |
232 | "ONboard", | |
233 | "Brumby", | |
234 | "Brumby", | |
235 | "ONboard-EI", | |
a3f8d9d5 | 236 | NULL, |
1da177e4 LT |
237 | "ONboard", |
238 | "ONboard-MC", | |
239 | "ONboard-MC", | |
a3f8d9d5 JS |
240 | NULL, |
241 | NULL, | |
242 | NULL, | |
243 | NULL, | |
244 | NULL, | |
245 | NULL, | |
246 | NULL, | |
247 | NULL, | |
1da177e4 LT |
248 | "EasyIO", |
249 | "EC8/32-AT", | |
250 | "EC8/32-MC", | |
251 | "EC8/64-AT", | |
252 | "EC8/64-EI", | |
253 | "EC8/64-MC", | |
254 | "EC8/32-PCI", | |
255 | "EC8/64-PCI", | |
256 | "EasyIO-PCI", | |
257 | "EC/RA-PCI", | |
258 | }; | |
259 | ||
260 | /*****************************************************************************/ | |
261 | ||
1da177e4 LT |
262 | /* |
263 | * Define some string labels for arguments passed from the module | |
264 | * load line. These allow for easy board definitions, and easy | |
265 | * modification of the io, memory and irq resoucres. | |
266 | */ | |
267 | ||
268 | static char *board0[8]; | |
269 | static char *board1[8]; | |
270 | static char *board2[8]; | |
271 | static char *board3[8]; | |
272 | ||
273 | static char **stli_brdsp[] = { | |
274 | (char **) &board0, | |
275 | (char **) &board1, | |
276 | (char **) &board2, | |
277 | (char **) &board3 | |
278 | }; | |
279 | ||
280 | /* | |
281 | * Define a set of common board names, and types. This is used to | |
282 | * parse any module arguments. | |
283 | */ | |
284 | ||
1f8ec435 | 285 | static struct stlibrdtype { |
1da177e4 LT |
286 | char *name; |
287 | int type; | |
1f8ec435 | 288 | } stli_brdstr[] = { |
1da177e4 LT |
289 | { "stallion", BRD_STALLION }, |
290 | { "1", BRD_STALLION }, | |
291 | { "brumby", BRD_BRUMBY }, | |
292 | { "brumby4", BRD_BRUMBY }, | |
293 | { "brumby/4", BRD_BRUMBY }, | |
294 | { "brumby-4", BRD_BRUMBY }, | |
295 | { "brumby8", BRD_BRUMBY }, | |
296 | { "brumby/8", BRD_BRUMBY }, | |
297 | { "brumby-8", BRD_BRUMBY }, | |
298 | { "brumby16", BRD_BRUMBY }, | |
299 | { "brumby/16", BRD_BRUMBY }, | |
300 | { "brumby-16", BRD_BRUMBY }, | |
301 | { "2", BRD_BRUMBY }, | |
302 | { "onboard2", BRD_ONBOARD2 }, | |
303 | { "onboard-2", BRD_ONBOARD2 }, | |
304 | { "onboard/2", BRD_ONBOARD2 }, | |
305 | { "onboard-mc", BRD_ONBOARD2 }, | |
306 | { "onboard/mc", BRD_ONBOARD2 }, | |
307 | { "onboard-mca", BRD_ONBOARD2 }, | |
308 | { "onboard/mca", BRD_ONBOARD2 }, | |
309 | { "3", BRD_ONBOARD2 }, | |
310 | { "onboard", BRD_ONBOARD }, | |
311 | { "onboardat", BRD_ONBOARD }, | |
312 | { "4", BRD_ONBOARD }, | |
313 | { "onboarde", BRD_ONBOARDE }, | |
314 | { "onboard-e", BRD_ONBOARDE }, | |
315 | { "onboard/e", BRD_ONBOARDE }, | |
316 | { "onboard-ei", BRD_ONBOARDE }, | |
317 | { "onboard/ei", BRD_ONBOARDE }, | |
318 | { "7", BRD_ONBOARDE }, | |
319 | { "ecp", BRD_ECP }, | |
320 | { "ecpat", BRD_ECP }, | |
321 | { "ec8/64", BRD_ECP }, | |
322 | { "ec8/64-at", BRD_ECP }, | |
323 | { "ec8/64-isa", BRD_ECP }, | |
324 | { "23", BRD_ECP }, | |
325 | { "ecpe", BRD_ECPE }, | |
326 | { "ecpei", BRD_ECPE }, | |
327 | { "ec8/64-e", BRD_ECPE }, | |
328 | { "ec8/64-ei", BRD_ECPE }, | |
329 | { "24", BRD_ECPE }, | |
330 | { "ecpmc", BRD_ECPMC }, | |
331 | { "ec8/64-mc", BRD_ECPMC }, | |
332 | { "ec8/64-mca", BRD_ECPMC }, | |
333 | { "25", BRD_ECPMC }, | |
334 | { "ecppci", BRD_ECPPCI }, | |
335 | { "ec/ra", BRD_ECPPCI }, | |
336 | { "ec/ra-pc", BRD_ECPPCI }, | |
337 | { "ec/ra-pci", BRD_ECPPCI }, | |
338 | { "29", BRD_ECPPCI }, | |
339 | }; | |
340 | ||
341 | /* | |
342 | * Define the module agruments. | |
343 | */ | |
344 | MODULE_AUTHOR("Greg Ungerer"); | |
345 | MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver"); | |
346 | MODULE_LICENSE("GPL"); | |
347 | ||
348 | ||
8d3b33f6 | 349 | module_param_array(board0, charp, NULL, 0); |
1da177e4 | 350 | MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 351 | module_param_array(board1, charp, NULL, 0); |
1da177e4 | 352 | MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 353 | module_param_array(board2, charp, NULL, 0); |
1da177e4 | 354 | MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]"); |
8d3b33f6 | 355 | module_param_array(board3, charp, NULL, 0); |
1da177e4 LT |
356 | MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]"); |
357 | ||
1da177e4 LT |
358 | /* |
359 | * Set up a default memory address table for EISA board probing. | |
360 | * The default addresses are all bellow 1Mbyte, which has to be the | |
361 | * case anyway. They should be safe, since we only read values from | |
362 | * them, and interrupts are disabled while we do it. If the higher | |
363 | * memory support is compiled in then we also try probing around | |
364 | * the 1Gb, 2Gb and 3Gb areas as well... | |
365 | */ | |
366 | static unsigned long stli_eisamemprobeaddrs[] = { | |
367 | 0xc0000, 0xd0000, 0xe0000, 0xf0000, | |
368 | 0x80000000, 0x80010000, 0x80020000, 0x80030000, | |
369 | 0x40000000, 0x40010000, 0x40020000, 0x40030000, | |
370 | 0xc0000000, 0xc0010000, 0xc0020000, 0xc0030000, | |
371 | 0xff000000, 0xff010000, 0xff020000, 0xff030000, | |
372 | }; | |
373 | ||
fe971071 | 374 | static int stli_eisamempsize = ARRAY_SIZE(stli_eisamemprobeaddrs); |
1da177e4 LT |
375 | |
376 | /* | |
377 | * Define the Stallion PCI vendor and device IDs. | |
378 | */ | |
1da177e4 LT |
379 | #ifndef PCI_DEVICE_ID_ECRA |
380 | #define PCI_DEVICE_ID_ECRA 0x0004 | |
381 | #endif | |
382 | ||
383 | static struct pci_device_id istallion_pci_tbl[] = { | |
4ac4360b | 384 | { PCI_DEVICE(PCI_VENDOR_ID_STALLION, PCI_DEVICE_ID_ECRA), }, |
1da177e4 LT |
385 | { 0 } |
386 | }; | |
387 | MODULE_DEVICE_TABLE(pci, istallion_pci_tbl); | |
388 | ||
845bead4 | 389 | static struct pci_driver stli_pcidriver; |
1da177e4 LT |
390 | |
391 | /*****************************************************************************/ | |
392 | ||
393 | /* | |
394 | * Hardware configuration info for ECP boards. These defines apply | |
395 | * to the directly accessible io ports of the ECP. There is a set of | |
396 | * defines for each ECP board type, ISA, EISA, MCA and PCI. | |
397 | */ | |
398 | #define ECP_IOSIZE 4 | |
399 | ||
400 | #define ECP_MEMSIZE (128 * 1024) | |
401 | #define ECP_PCIMEMSIZE (256 * 1024) | |
402 | ||
403 | #define ECP_ATPAGESIZE (4 * 1024) | |
404 | #define ECP_MCPAGESIZE (4 * 1024) | |
405 | #define ECP_EIPAGESIZE (64 * 1024) | |
406 | #define ECP_PCIPAGESIZE (64 * 1024) | |
407 | ||
408 | #define STL_EISAID 0x8c4e | |
409 | ||
410 | /* | |
411 | * Important defines for the ISA class of ECP board. | |
412 | */ | |
413 | #define ECP_ATIREG 0 | |
414 | #define ECP_ATCONFR 1 | |
415 | #define ECP_ATMEMAR 2 | |
416 | #define ECP_ATMEMPR 3 | |
417 | #define ECP_ATSTOP 0x1 | |
418 | #define ECP_ATINTENAB 0x10 | |
419 | #define ECP_ATENABLE 0x20 | |
420 | #define ECP_ATDISABLE 0x00 | |
421 | #define ECP_ATADDRMASK 0x3f000 | |
422 | #define ECP_ATADDRSHFT 12 | |
423 | ||
424 | /* | |
425 | * Important defines for the EISA class of ECP board. | |
426 | */ | |
427 | #define ECP_EIIREG 0 | |
428 | #define ECP_EIMEMARL 1 | |
429 | #define ECP_EICONFR 2 | |
430 | #define ECP_EIMEMARH 3 | |
431 | #define ECP_EIENABLE 0x1 | |
432 | #define ECP_EIDISABLE 0x0 | |
433 | #define ECP_EISTOP 0x4 | |
434 | #define ECP_EIEDGE 0x00 | |
435 | #define ECP_EILEVEL 0x80 | |
436 | #define ECP_EIADDRMASKL 0x00ff0000 | |
437 | #define ECP_EIADDRSHFTL 16 | |
438 | #define ECP_EIADDRMASKH 0xff000000 | |
439 | #define ECP_EIADDRSHFTH 24 | |
440 | #define ECP_EIBRDENAB 0xc84 | |
441 | ||
442 | #define ECP_EISAID 0x4 | |
443 | ||
444 | /* | |
445 | * Important defines for the Micro-channel class of ECP board. | |
446 | * (It has a lot in common with the ISA boards.) | |
447 | */ | |
448 | #define ECP_MCIREG 0 | |
449 | #define ECP_MCCONFR 1 | |
450 | #define ECP_MCSTOP 0x20 | |
451 | #define ECP_MCENABLE 0x80 | |
452 | #define ECP_MCDISABLE 0x00 | |
453 | ||
454 | /* | |
455 | * Important defines for the PCI class of ECP board. | |
456 | * (It has a lot in common with the other ECP boards.) | |
457 | */ | |
458 | #define ECP_PCIIREG 0 | |
459 | #define ECP_PCICONFR 1 | |
460 | #define ECP_PCISTOP 0x01 | |
461 | ||
462 | /* | |
463 | * Hardware configuration info for ONboard and Brumby boards. These | |
464 | * defines apply to the directly accessible io ports of these boards. | |
465 | */ | |
466 | #define ONB_IOSIZE 16 | |
467 | #define ONB_MEMSIZE (64 * 1024) | |
468 | #define ONB_ATPAGESIZE (64 * 1024) | |
469 | #define ONB_MCPAGESIZE (64 * 1024) | |
470 | #define ONB_EIMEMSIZE (128 * 1024) | |
471 | #define ONB_EIPAGESIZE (64 * 1024) | |
472 | ||
473 | /* | |
474 | * Important defines for the ISA class of ONboard board. | |
475 | */ | |
476 | #define ONB_ATIREG 0 | |
477 | #define ONB_ATMEMAR 1 | |
478 | #define ONB_ATCONFR 2 | |
479 | #define ONB_ATSTOP 0x4 | |
480 | #define ONB_ATENABLE 0x01 | |
481 | #define ONB_ATDISABLE 0x00 | |
482 | #define ONB_ATADDRMASK 0xff0000 | |
483 | #define ONB_ATADDRSHFT 16 | |
484 | ||
485 | #define ONB_MEMENABLO 0 | |
486 | #define ONB_MEMENABHI 0x02 | |
487 | ||
488 | /* | |
489 | * Important defines for the EISA class of ONboard board. | |
490 | */ | |
491 | #define ONB_EIIREG 0 | |
492 | #define ONB_EIMEMARL 1 | |
493 | #define ONB_EICONFR 2 | |
494 | #define ONB_EIMEMARH 3 | |
495 | #define ONB_EIENABLE 0x1 | |
496 | #define ONB_EIDISABLE 0x0 | |
497 | #define ONB_EISTOP 0x4 | |
498 | #define ONB_EIEDGE 0x00 | |
499 | #define ONB_EILEVEL 0x80 | |
500 | #define ONB_EIADDRMASKL 0x00ff0000 | |
501 | #define ONB_EIADDRSHFTL 16 | |
502 | #define ONB_EIADDRMASKH 0xff000000 | |
503 | #define ONB_EIADDRSHFTH 24 | |
504 | #define ONB_EIBRDENAB 0xc84 | |
505 | ||
506 | #define ONB_EISAID 0x1 | |
507 | ||
508 | /* | |
509 | * Important defines for the Brumby boards. They are pretty simple, | |
510 | * there is not much that is programmably configurable. | |
511 | */ | |
512 | #define BBY_IOSIZE 16 | |
513 | #define BBY_MEMSIZE (64 * 1024) | |
514 | #define BBY_PAGESIZE (16 * 1024) | |
515 | ||
516 | #define BBY_ATIREG 0 | |
517 | #define BBY_ATCONFR 1 | |
518 | #define BBY_ATSTOP 0x4 | |
519 | ||
520 | /* | |
521 | * Important defines for the Stallion boards. They are pretty simple, | |
522 | * there is not much that is programmably configurable. | |
523 | */ | |
524 | #define STAL_IOSIZE 16 | |
525 | #define STAL_MEMSIZE (64 * 1024) | |
526 | #define STAL_PAGESIZE (64 * 1024) | |
527 | ||
528 | /* | |
529 | * Define the set of status register values for EasyConnection panels. | |
530 | * The signature will return with the status value for each panel. From | |
531 | * this we can determine what is attached to the board - before we have | |
532 | * actually down loaded any code to it. | |
533 | */ | |
534 | #define ECH_PNLSTATUS 2 | |
535 | #define ECH_PNL16PORT 0x20 | |
536 | #define ECH_PNLIDMASK 0x07 | |
537 | #define ECH_PNLXPID 0x40 | |
538 | #define ECH_PNLINTRPEND 0x80 | |
539 | ||
540 | /* | |
541 | * Define some macros to do things to the board. Even those these boards | |
542 | * are somewhat related there is often significantly different ways of | |
543 | * doing some operation on it (like enable, paging, reset, etc). So each | |
544 | * board class has a set of functions which do the commonly required | |
545 | * operations. The macros below basically just call these functions, | |
546 | * generally checking for a NULL function - which means that the board | |
547 | * needs nothing done to it to achieve this operation! | |
548 | */ | |
549 | #define EBRDINIT(brdp) \ | |
550 | if (brdp->init != NULL) \ | |
551 | (* brdp->init)(brdp) | |
552 | ||
553 | #define EBRDENABLE(brdp) \ | |
554 | if (brdp->enable != NULL) \ | |
555 | (* brdp->enable)(brdp); | |
556 | ||
557 | #define EBRDDISABLE(brdp) \ | |
558 | if (brdp->disable != NULL) \ | |
559 | (* brdp->disable)(brdp); | |
560 | ||
561 | #define EBRDINTR(brdp) \ | |
562 | if (brdp->intr != NULL) \ | |
563 | (* brdp->intr)(brdp); | |
564 | ||
565 | #define EBRDRESET(brdp) \ | |
566 | if (brdp->reset != NULL) \ | |
567 | (* brdp->reset)(brdp); | |
568 | ||
569 | #define EBRDGETMEMPTR(brdp,offset) \ | |
570 | (* brdp->getmemptr)(brdp, offset, __LINE__) | |
571 | ||
572 | /* | |
573 | * Define the maximal baud rate, and the default baud base for ports. | |
574 | */ | |
575 | #define STL_MAXBAUD 460800 | |
576 | #define STL_BAUDBASE 115200 | |
577 | #define STL_CLOSEDELAY (5 * HZ / 10) | |
578 | ||
579 | /*****************************************************************************/ | |
580 | ||
581 | /* | |
582 | * Define macros to extract a brd or port number from a minor number. | |
583 | */ | |
584 | #define MINOR2BRD(min) (((min) & 0xc0) >> 6) | |
585 | #define MINOR2PORT(min) ((min) & 0x3f) | |
586 | ||
1da177e4 LT |
587 | /*****************************************************************************/ |
588 | ||
1da177e4 LT |
589 | /* |
590 | * Prototype all functions in this driver! | |
591 | */ | |
592 | ||
1f8ec435 | 593 | static int stli_parsebrd(struct stlconf *confp, char **argp); |
672b2714 | 594 | static int stli_init(void); |
1da177e4 LT |
595 | static int stli_open(struct tty_struct *tty, struct file *filp); |
596 | static void stli_close(struct tty_struct *tty, struct file *filp); | |
597 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count); | |
598 | static void stli_putchar(struct tty_struct *tty, unsigned char ch); | |
599 | static void stli_flushchars(struct tty_struct *tty); | |
600 | static int stli_writeroom(struct tty_struct *tty); | |
601 | static int stli_charsinbuffer(struct tty_struct *tty); | |
602 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); | |
606d099c | 603 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old); |
1da177e4 LT |
604 | static void stli_throttle(struct tty_struct *tty); |
605 | static void stli_unthrottle(struct tty_struct *tty); | |
606 | static void stli_stop(struct tty_struct *tty); | |
607 | static void stli_start(struct tty_struct *tty); | |
608 | static void stli_flushbuffer(struct tty_struct *tty); | |
609 | static void stli_breakctl(struct tty_struct *tty, int state); | |
610 | static void stli_waituntilsent(struct tty_struct *tty, int timeout); | |
611 | static void stli_sendxchar(struct tty_struct *tty, char ch); | |
612 | static void stli_hangup(struct tty_struct *tty); | |
1f8ec435 | 613 | static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos); |
1da177e4 | 614 | |
1f8ec435 JS |
615 | static int stli_brdinit(struct stlibrd *brdp); |
616 | static int stli_startbrd(struct stlibrd *brdp); | |
1da177e4 LT |
617 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp); |
618 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp); | |
619 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg); | |
1f8ec435 | 620 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp); |
1da177e4 | 621 | static void stli_poll(unsigned long arg); |
1f8ec435 JS |
622 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp); |
623 | static int stli_initopen(struct stlibrd *brdp, struct stliport *portp); | |
624 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); | |
625 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait); | |
626 | static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp); | |
3e577a80 | 627 | static void stli_dohangup(struct work_struct *); |
1f8ec435 JS |
628 | static int stli_setport(struct stliport *portp); |
629 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
630 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
631 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback); | |
632 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp); | |
633 | static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp); | |
1da177e4 LT |
634 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts); |
635 | static long stli_mktiocm(unsigned long sigvalue); | |
1f8ec435 JS |
636 | static void stli_read(struct stlibrd *brdp, struct stliport *portp); |
637 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp); | |
638 | static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp); | |
1da177e4 | 639 | static int stli_getbrdstats(combrd_t __user *bp); |
1f8ec435 JS |
640 | static int stli_getportstats(struct stliport *portp, comstats_t __user *cp); |
641 | static int stli_portcmdstats(struct stliport *portp); | |
642 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp); | |
643 | static int stli_getportstruct(struct stliport __user *arg); | |
644 | static int stli_getbrdstruct(struct stlibrd __user *arg); | |
645 | static struct stlibrd *stli_allocbrd(void); | |
646 | ||
647 | static void stli_ecpinit(struct stlibrd *brdp); | |
648 | static void stli_ecpenable(struct stlibrd *brdp); | |
649 | static void stli_ecpdisable(struct stlibrd *brdp); | |
650 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
651 | static void stli_ecpreset(struct stlibrd *brdp); | |
652 | static void stli_ecpintr(struct stlibrd *brdp); | |
653 | static void stli_ecpeiinit(struct stlibrd *brdp); | |
654 | static void stli_ecpeienable(struct stlibrd *brdp); | |
655 | static void stli_ecpeidisable(struct stlibrd *brdp); | |
656 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
657 | static void stli_ecpeireset(struct stlibrd *brdp); | |
658 | static void stli_ecpmcenable(struct stlibrd *brdp); | |
659 | static void stli_ecpmcdisable(struct stlibrd *brdp); | |
660 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
661 | static void stli_ecpmcreset(struct stlibrd *brdp); | |
662 | static void stli_ecppciinit(struct stlibrd *brdp); | |
663 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
664 | static void stli_ecppcireset(struct stlibrd *brdp); | |
665 | ||
666 | static void stli_onbinit(struct stlibrd *brdp); | |
667 | static void stli_onbenable(struct stlibrd *brdp); | |
668 | static void stli_onbdisable(struct stlibrd *brdp); | |
669 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
670 | static void stli_onbreset(struct stlibrd *brdp); | |
671 | static void stli_onbeinit(struct stlibrd *brdp); | |
672 | static void stli_onbeenable(struct stlibrd *brdp); | |
673 | static void stli_onbedisable(struct stlibrd *brdp); | |
674 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
675 | static void stli_onbereset(struct stlibrd *brdp); | |
676 | static void stli_bbyinit(struct stlibrd *brdp); | |
677 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
678 | static void stli_bbyreset(struct stlibrd *brdp); | |
679 | static void stli_stalinit(struct stlibrd *brdp); | |
680 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line); | |
681 | static void stli_stalreset(struct stlibrd *brdp); | |
682 | ||
1328d737 | 683 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, unsigned int portnr); |
1f8ec435 JS |
684 | |
685 | static int stli_initecp(struct stlibrd *brdp); | |
686 | static int stli_initonb(struct stlibrd *brdp); | |
687 | static int stli_eisamemprobe(struct stlibrd *brdp); | |
688 | static int stli_initports(struct stlibrd *brdp); | |
1da177e4 | 689 | |
1da177e4 LT |
690 | /*****************************************************************************/ |
691 | ||
692 | /* | |
693 | * Define the driver info for a user level shared memory device. This | |
694 | * device will work sort of like the /dev/kmem device - except that it | |
695 | * will give access to the shared memory on the Stallion intelligent | |
696 | * board. This is also a very useful debugging tool. | |
697 | */ | |
62322d25 | 698 | static const struct file_operations stli_fsiomem = { |
1da177e4 LT |
699 | .owner = THIS_MODULE, |
700 | .read = stli_memread, | |
701 | .write = stli_memwrite, | |
702 | .ioctl = stli_memioctl, | |
703 | }; | |
704 | ||
705 | /*****************************************************************************/ | |
706 | ||
707 | /* | |
708 | * Define a timer_list entry for our poll routine. The slave board | |
709 | * is polled every so often to see if anything needs doing. This is | |
710 | * much cheaper on host cpu than using interrupts. It turns out to | |
711 | * not increase character latency by much either... | |
712 | */ | |
8d06afab | 713 | static DEFINE_TIMER(stli_timerlist, stli_poll, 0, 0); |
1da177e4 LT |
714 | |
715 | static int stli_timeron; | |
716 | ||
717 | /* | |
718 | * Define the calculation for the timeout routine. | |
719 | */ | |
720 | #define STLI_TIMEOUT (jiffies + 1) | |
721 | ||
722 | /*****************************************************************************/ | |
723 | ||
ca8eca68 | 724 | static struct class *istallion_class; |
1da177e4 | 725 | |
1f8ec435 | 726 | static void stli_cleanup_ports(struct stlibrd *brdp) |
845bead4 | 727 | { |
1f8ec435 | 728 | struct stliport *portp; |
845bead4 JS |
729 | unsigned int j; |
730 | ||
731 | for (j = 0; j < STL_MAXPORTS; j++) { | |
732 | portp = brdp->ports[j]; | |
733 | if (portp != NULL) { | |
734 | if (portp->tty != NULL) | |
735 | tty_hangup(portp->tty); | |
736 | kfree(portp); | |
737 | } | |
738 | } | |
739 | } | |
740 | ||
1da177e4 LT |
741 | /* |
742 | * Loadable module initialization stuff. | |
743 | */ | |
744 | ||
745 | static int __init istallion_module_init(void) | |
746 | { | |
1da177e4 | 747 | stli_init(); |
4ac4360b | 748 | return 0; |
1da177e4 LT |
749 | } |
750 | ||
751 | /*****************************************************************************/ | |
752 | ||
753 | static void __exit istallion_module_exit(void) | |
754 | { | |
1f8ec435 | 755 | struct stlibrd *brdp; |
1328d737 | 756 | unsigned int j; |
845bead4 | 757 | int i; |
1da177e4 | 758 | |
1da177e4 LT |
759 | printk(KERN_INFO "Unloading %s: version %s\n", stli_drvtitle, |
760 | stli_drvversion); | |
761 | ||
845bead4 | 762 | pci_unregister_driver(&stli_pcidriver); |
4ac4360b AC |
763 | /* |
764 | * Free up all allocated resources used by the ports. This includes | |
765 | * memory and interrupts. | |
766 | */ | |
1da177e4 LT |
767 | if (stli_timeron) { |
768 | stli_timeron = 0; | |
4ac4360b | 769 | del_timer_sync(&stli_timerlist); |
1da177e4 LT |
770 | } |
771 | ||
772 | i = tty_unregister_driver(stli_serial); | |
773 | if (i) { | |
774 | printk("STALLION: failed to un-register tty driver, " | |
775 | "errno=%d\n", -i); | |
1da177e4 LT |
776 | return; |
777 | } | |
778 | put_tty_driver(stli_serial); | |
1328d737 JS |
779 | for (j = 0; j < 4; j++) |
780 | class_device_destroy(istallion_class, MKDEV(STL_SIOMEMMAJOR, j)); | |
ca8eca68 | 781 | class_destroy(istallion_class); |
1da177e4 LT |
782 | if ((i = unregister_chrdev(STL_SIOMEMMAJOR, "staliomem"))) |
783 | printk("STALLION: failed to un-register serial memory device, " | |
784 | "errno=%d\n", -i); | |
735d5661 | 785 | |
735d5661 | 786 | kfree(stli_txcookbuf); |
1da177e4 | 787 | |
1328d737 JS |
788 | for (j = 0; (j < stli_nrbrds); j++) { |
789 | if ((brdp = stli_brds[j]) == NULL) | |
1da177e4 | 790 | continue; |
845bead4 JS |
791 | |
792 | stli_cleanup_ports(brdp); | |
1da177e4 LT |
793 | |
794 | iounmap(brdp->membase); | |
795 | if (brdp->iosize > 0) | |
796 | release_region(brdp->iobase, brdp->iosize); | |
797 | kfree(brdp); | |
1328d737 | 798 | stli_brds[j] = NULL; |
1da177e4 | 799 | } |
1da177e4 LT |
800 | } |
801 | ||
802 | module_init(istallion_module_init); | |
803 | module_exit(istallion_module_exit); | |
804 | ||
805 | /*****************************************************************************/ | |
806 | ||
1da177e4 LT |
807 | /* |
808 | * Parse the supplied argument string, into the board conf struct. | |
809 | */ | |
810 | ||
1f8ec435 | 811 | static int stli_parsebrd(struct stlconf *confp, char **argp) |
1da177e4 | 812 | { |
1328d737 | 813 | unsigned int i; |
4ac4360b | 814 | char *sp; |
1da177e4 | 815 | |
4ac4360b AC |
816 | if (argp[0] == NULL || *argp[0] == 0) |
817 | return 0; | |
1da177e4 LT |
818 | |
819 | for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++) | |
a3f8d9d5 | 820 | *sp = tolower(*sp); |
1da177e4 | 821 | |
fe971071 | 822 | for (i = 0; i < ARRAY_SIZE(stli_brdstr); i++) { |
1da177e4 LT |
823 | if (strcmp(stli_brdstr[i].name, argp[0]) == 0) |
824 | break; | |
825 | } | |
fe971071 | 826 | if (i == ARRAY_SIZE(stli_brdstr)) { |
1da177e4 | 827 | printk("STALLION: unknown board name, %s?\n", argp[0]); |
fe971071 | 828 | return 0; |
1da177e4 LT |
829 | } |
830 | ||
831 | confp->brdtype = stli_brdstr[i].type; | |
4ac4360b | 832 | if (argp[1] != NULL && *argp[1] != 0) |
a3f8d9d5 | 833 | confp->ioaddr1 = simple_strtoul(argp[1], NULL, 0); |
4ac4360b | 834 | if (argp[2] != NULL && *argp[2] != 0) |
a3f8d9d5 | 835 | confp->memaddr = simple_strtoul(argp[2], NULL, 0); |
1da177e4 LT |
836 | return(1); |
837 | } | |
838 | ||
1da177e4 LT |
839 | /*****************************************************************************/ |
840 | ||
1da177e4 LT |
841 | static int stli_open(struct tty_struct *tty, struct file *filp) |
842 | { | |
1f8ec435 JS |
843 | struct stlibrd *brdp; |
844 | struct stliport *portp; | |
1328d737 JS |
845 | unsigned int minordev, brdnr, portnr; |
846 | int rc; | |
1da177e4 LT |
847 | |
848 | minordev = tty->index; | |
849 | brdnr = MINOR2BRD(minordev); | |
850 | if (brdnr >= stli_nrbrds) | |
4ac4360b | 851 | return -ENODEV; |
1da177e4 | 852 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
853 | if (brdp == NULL) |
854 | return -ENODEV; | |
1da177e4 | 855 | if ((brdp->state & BST_STARTED) == 0) |
4ac4360b | 856 | return -ENODEV; |
1da177e4 | 857 | portnr = MINOR2PORT(minordev); |
1328d737 | 858 | if (portnr > brdp->nrports) |
4ac4360b | 859 | return -ENODEV; |
1da177e4 LT |
860 | |
861 | portp = brdp->ports[portnr]; | |
4ac4360b AC |
862 | if (portp == NULL) |
863 | return -ENODEV; | |
1da177e4 | 864 | if (portp->devnr < 1) |
4ac4360b | 865 | return -ENODEV; |
1da177e4 LT |
866 | |
867 | ||
868 | /* | |
869 | * Check if this port is in the middle of closing. If so then wait | |
870 | * until it is closed then return error status based on flag settings. | |
871 | * The sleep here does not need interrupt protection since the wakeup | |
872 | * for it is done with the same context. | |
873 | */ | |
874 | if (portp->flags & ASYNC_CLOSING) { | |
875 | interruptible_sleep_on(&portp->close_wait); | |
876 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
4ac4360b AC |
877 | return -EAGAIN; |
878 | return -ERESTARTSYS; | |
1da177e4 LT |
879 | } |
880 | ||
881 | /* | |
882 | * On the first open of the device setup the port hardware, and | |
883 | * initialize the per port data structure. Since initializing the port | |
884 | * requires several commands to the board we will need to wait for any | |
885 | * other open that is already initializing the port. | |
886 | */ | |
887 | portp->tty = tty; | |
888 | tty->driver_data = portp; | |
889 | portp->refcount++; | |
890 | ||
891 | wait_event_interruptible(portp->raw_wait, | |
892 | !test_bit(ST_INITIALIZING, &portp->state)); | |
893 | if (signal_pending(current)) | |
4ac4360b | 894 | return -ERESTARTSYS; |
1da177e4 LT |
895 | |
896 | if ((portp->flags & ASYNC_INITIALIZED) == 0) { | |
897 | set_bit(ST_INITIALIZING, &portp->state); | |
898 | if ((rc = stli_initopen(brdp, portp)) >= 0) { | |
899 | portp->flags |= ASYNC_INITIALIZED; | |
900 | clear_bit(TTY_IO_ERROR, &tty->flags); | |
901 | } | |
902 | clear_bit(ST_INITIALIZING, &portp->state); | |
903 | wake_up_interruptible(&portp->raw_wait); | |
904 | if (rc < 0) | |
4ac4360b | 905 | return rc; |
1da177e4 LT |
906 | } |
907 | ||
908 | /* | |
909 | * Check if this port is in the middle of closing. If so then wait | |
910 | * until it is closed then return error status, based on flag settings. | |
911 | * The sleep here does not need interrupt protection since the wakeup | |
912 | * for it is done with the same context. | |
913 | */ | |
914 | if (portp->flags & ASYNC_CLOSING) { | |
915 | interruptible_sleep_on(&portp->close_wait); | |
916 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
4ac4360b AC |
917 | return -EAGAIN; |
918 | return -ERESTARTSYS; | |
1da177e4 LT |
919 | } |
920 | ||
921 | /* | |
922 | * Based on type of open being done check if it can overlap with any | |
923 | * previous opens still in effect. If we are a normal serial device | |
924 | * then also we might have to wait for carrier. | |
925 | */ | |
926 | if (!(filp->f_flags & O_NONBLOCK)) { | |
927 | if ((rc = stli_waitcarrier(brdp, portp, filp)) != 0) | |
4ac4360b | 928 | return rc; |
1da177e4 LT |
929 | } |
930 | portp->flags |= ASYNC_NORMAL_ACTIVE; | |
4ac4360b | 931 | return 0; |
1da177e4 LT |
932 | } |
933 | ||
934 | /*****************************************************************************/ | |
935 | ||
936 | static void stli_close(struct tty_struct *tty, struct file *filp) | |
937 | { | |
1f8ec435 JS |
938 | struct stlibrd *brdp; |
939 | struct stliport *portp; | |
4ac4360b | 940 | unsigned long flags; |
1da177e4 LT |
941 | |
942 | portp = tty->driver_data; | |
4ac4360b | 943 | if (portp == NULL) |
1da177e4 LT |
944 | return; |
945 | ||
4ac4360b | 946 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 | 947 | if (tty_hung_up_p(filp)) { |
4ac4360b | 948 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
949 | return; |
950 | } | |
951 | if ((tty->count == 1) && (portp->refcount != 1)) | |
952 | portp->refcount = 1; | |
953 | if (portp->refcount-- > 1) { | |
4ac4360b | 954 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
955 | return; |
956 | } | |
957 | ||
958 | portp->flags |= ASYNC_CLOSING; | |
959 | ||
960 | /* | |
961 | * May want to wait for data to drain before closing. The BUSY flag | |
962 | * keeps track of whether we are still transmitting or not. It is | |
963 | * updated by messages from the slave - indicating when all chars | |
964 | * really have drained. | |
965 | */ | |
966 | if (tty == stli_txcooktty) | |
967 | stli_flushchars(tty); | |
968 | tty->closing = 1; | |
4ac4360b AC |
969 | spin_unlock_irqrestore(&stli_lock, flags); |
970 | ||
1da177e4 LT |
971 | if (portp->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
972 | tty_wait_until_sent(tty, portp->closing_wait); | |
973 | ||
974 | portp->flags &= ~ASYNC_INITIALIZED; | |
975 | brdp = stli_brds[portp->brdnr]; | |
976 | stli_rawclose(brdp, portp, 0, 0); | |
977 | if (tty->termios->c_cflag & HUPCL) { | |
978 | stli_mkasysigs(&portp->asig, 0, 0); | |
979 | if (test_bit(ST_CMDING, &portp->state)) | |
980 | set_bit(ST_DOSIGS, &portp->state); | |
981 | else | |
982 | stli_sendcmd(brdp, portp, A_SETSIGNALS, &portp->asig, | |
983 | sizeof(asysigs_t), 0); | |
984 | } | |
985 | clear_bit(ST_TXBUSY, &portp->state); | |
986 | clear_bit(ST_RXSTOP, &portp->state); | |
987 | set_bit(TTY_IO_ERROR, &tty->flags); | |
988 | if (tty->ldisc.flush_buffer) | |
989 | (tty->ldisc.flush_buffer)(tty); | |
990 | set_bit(ST_DOFLUSHRX, &portp->state); | |
991 | stli_flushbuffer(tty); | |
992 | ||
993 | tty->closing = 0; | |
4ac4360b | 994 | portp->tty = NULL; |
1da177e4 LT |
995 | |
996 | if (portp->openwaitcnt) { | |
997 | if (portp->close_delay) | |
998 | msleep_interruptible(jiffies_to_msecs(portp->close_delay)); | |
999 | wake_up_interruptible(&portp->open_wait); | |
1000 | } | |
1001 | ||
1002 | portp->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); | |
1003 | wake_up_interruptible(&portp->close_wait); | |
1da177e4 LT |
1004 | } |
1005 | ||
1006 | /*****************************************************************************/ | |
1007 | ||
1008 | /* | |
1009 | * Carry out first open operations on a port. This involves a number of | |
1010 | * commands to be sent to the slave. We need to open the port, set the | |
1011 | * notification events, set the initial port settings, get and set the | |
1012 | * initial signal values. We sleep and wait in between each one. But | |
1013 | * this still all happens pretty quickly. | |
1014 | */ | |
1015 | ||
1f8ec435 | 1016 | static int stli_initopen(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 1017 | { |
4ac4360b AC |
1018 | struct tty_struct *tty; |
1019 | asynotify_t nt; | |
1020 | asyport_t aport; | |
1021 | int rc; | |
1da177e4 LT |
1022 | |
1023 | if ((rc = stli_rawopen(brdp, portp, 0, 1)) < 0) | |
4ac4360b | 1024 | return rc; |
1da177e4 LT |
1025 | |
1026 | memset(&nt, 0, sizeof(asynotify_t)); | |
1027 | nt.data = (DT_TXLOW | DT_TXEMPTY | DT_RXBUSY | DT_RXBREAK); | |
1028 | nt.signal = SG_DCD; | |
1029 | if ((rc = stli_cmdwait(brdp, portp, A_SETNOTIFY, &nt, | |
1030 | sizeof(asynotify_t), 0)) < 0) | |
4ac4360b | 1031 | return rc; |
1da177e4 LT |
1032 | |
1033 | tty = portp->tty; | |
4ac4360b AC |
1034 | if (tty == NULL) |
1035 | return -ENODEV; | |
1da177e4 LT |
1036 | stli_mkasyport(portp, &aport, tty->termios); |
1037 | if ((rc = stli_cmdwait(brdp, portp, A_SETPORT, &aport, | |
1038 | sizeof(asyport_t), 0)) < 0) | |
4ac4360b | 1039 | return rc; |
1da177e4 LT |
1040 | |
1041 | set_bit(ST_GETSIGS, &portp->state); | |
1042 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, &portp->asig, | |
1043 | sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1044 | return rc; |
1da177e4 LT |
1045 | if (test_and_clear_bit(ST_GETSIGS, &portp->state)) |
1046 | portp->sigs = stli_mktiocm(portp->asig.sigvalue); | |
1047 | stli_mkasysigs(&portp->asig, 1, 1); | |
1048 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1049 | sizeof(asysigs_t), 0)) < 0) | |
4ac4360b | 1050 | return rc; |
1da177e4 | 1051 | |
4ac4360b | 1052 | return 0; |
1da177e4 LT |
1053 | } |
1054 | ||
1055 | /*****************************************************************************/ | |
1056 | ||
1057 | /* | |
1058 | * Send an open message to the slave. This will sleep waiting for the | |
1059 | * acknowledgement, so must have user context. We need to co-ordinate | |
1060 | * with close events here, since we don't want open and close events | |
1061 | * to overlap. | |
1062 | */ | |
1063 | ||
1f8ec435 | 1064 | static int stli_rawopen(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 1065 | { |
4ac4360b AC |
1066 | cdkhdr_t __iomem *hdrp; |
1067 | cdkctrl_t __iomem *cp; | |
1068 | unsigned char __iomem *bits; | |
1069 | unsigned long flags; | |
1070 | int rc; | |
1da177e4 LT |
1071 | |
1072 | /* | |
1073 | * Send a message to the slave to open this port. | |
1074 | */ | |
1da177e4 LT |
1075 | |
1076 | /* | |
1077 | * Slave is already closing this port. This can happen if a hangup | |
1078 | * occurs on this port. So we must wait until it is complete. The | |
1079 | * order of opens and closes may not be preserved across shared | |
1080 | * memory, so we must wait until it is complete. | |
1081 | */ | |
1082 | wait_event_interruptible(portp->raw_wait, | |
1083 | !test_bit(ST_CLOSING, &portp->state)); | |
1084 | if (signal_pending(current)) { | |
1da177e4 LT |
1085 | return -ERESTARTSYS; |
1086 | } | |
1087 | ||
1088 | /* | |
1089 | * Everything is ready now, so write the open message into shared | |
1090 | * memory. Once the message is in set the service bits to say that | |
1091 | * this port wants service. | |
1092 | */ | |
4ac4360b | 1093 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1094 | EBRDENABLE(brdp); |
4ac4360b AC |
1095 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1096 | writel(arg, &cp->openarg); | |
1097 | writeb(1, &cp->open); | |
1098 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1099 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1100 | portp->portidx; |
4ac4360b | 1101 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1102 | EBRDDISABLE(brdp); |
1103 | ||
1104 | if (wait == 0) { | |
4ac4360b AC |
1105 | spin_unlock_irqrestore(&brd_lock, flags); |
1106 | return 0; | |
1da177e4 LT |
1107 | } |
1108 | ||
1109 | /* | |
1110 | * Slave is in action, so now we must wait for the open acknowledgment | |
1111 | * to come back. | |
1112 | */ | |
1113 | rc = 0; | |
1114 | set_bit(ST_OPENING, &portp->state); | |
4ac4360b AC |
1115 | spin_unlock_irqrestore(&brd_lock, flags); |
1116 | ||
1da177e4 LT |
1117 | wait_event_interruptible(portp->raw_wait, |
1118 | !test_bit(ST_OPENING, &portp->state)); | |
1119 | if (signal_pending(current)) | |
1120 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1121 | |
1122 | if ((rc == 0) && (portp->rc != 0)) | |
1123 | rc = -EIO; | |
4ac4360b | 1124 | return rc; |
1da177e4 LT |
1125 | } |
1126 | ||
1127 | /*****************************************************************************/ | |
1128 | ||
1129 | /* | |
1130 | * Send a close message to the slave. Normally this will sleep waiting | |
1131 | * for the acknowledgement, but if wait parameter is 0 it will not. If | |
1132 | * wait is true then must have user context (to sleep). | |
1133 | */ | |
1134 | ||
1f8ec435 | 1135 | static int stli_rawclose(struct stlibrd *brdp, struct stliport *portp, unsigned long arg, int wait) |
1da177e4 | 1136 | { |
4ac4360b AC |
1137 | cdkhdr_t __iomem *hdrp; |
1138 | cdkctrl_t __iomem *cp; | |
1139 | unsigned char __iomem *bits; | |
1140 | unsigned long flags; | |
1141 | int rc; | |
1da177e4 LT |
1142 | |
1143 | /* | |
1144 | * Slave is already closing this port. This can happen if a hangup | |
1145 | * occurs on this port. | |
1146 | */ | |
1147 | if (wait) { | |
1148 | wait_event_interruptible(portp->raw_wait, | |
1149 | !test_bit(ST_CLOSING, &portp->state)); | |
1150 | if (signal_pending(current)) { | |
1da177e4 LT |
1151 | return -ERESTARTSYS; |
1152 | } | |
1153 | } | |
1154 | ||
1155 | /* | |
1156 | * Write the close command into shared memory. | |
1157 | */ | |
4ac4360b | 1158 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1159 | EBRDENABLE(brdp); |
4ac4360b AC |
1160 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1161 | writel(arg, &cp->closearg); | |
1162 | writeb(1, &cp->close); | |
1163 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
1164 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1165 | portp->portidx; |
4ac4360b | 1166 | writeb(readb(bits) |portp->portbit, bits); |
1da177e4 LT |
1167 | EBRDDISABLE(brdp); |
1168 | ||
1169 | set_bit(ST_CLOSING, &portp->state); | |
4ac4360b AC |
1170 | spin_unlock_irqrestore(&brd_lock, flags); |
1171 | ||
1172 | if (wait == 0) | |
1173 | return 0; | |
1da177e4 LT |
1174 | |
1175 | /* | |
1176 | * Slave is in action, so now we must wait for the open acknowledgment | |
1177 | * to come back. | |
1178 | */ | |
1179 | rc = 0; | |
1180 | wait_event_interruptible(portp->raw_wait, | |
1181 | !test_bit(ST_CLOSING, &portp->state)); | |
1182 | if (signal_pending(current)) | |
1183 | rc = -ERESTARTSYS; | |
1da177e4 LT |
1184 | |
1185 | if ((rc == 0) && (portp->rc != 0)) | |
1186 | rc = -EIO; | |
4ac4360b | 1187 | return rc; |
1da177e4 LT |
1188 | } |
1189 | ||
1190 | /*****************************************************************************/ | |
1191 | ||
1192 | /* | |
1193 | * Send a command to the slave and wait for the response. This must | |
1194 | * have user context (it sleeps). This routine is generic in that it | |
1195 | * can send any type of command. Its purpose is to wait for that command | |
1196 | * to complete (as opposed to initiating the command then returning). | |
1197 | */ | |
1198 | ||
1f8ec435 | 1199 | static int stli_cmdwait(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 1200 | { |
1da177e4 LT |
1201 | wait_event_interruptible(portp->raw_wait, |
1202 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1203 | if (signal_pending(current)) |
1da177e4 | 1204 | return -ERESTARTSYS; |
1da177e4 LT |
1205 | |
1206 | stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
1207 | ||
1208 | wait_event_interruptible(portp->raw_wait, | |
1209 | !test_bit(ST_CMDING, &portp->state)); | |
4ac4360b | 1210 | if (signal_pending(current)) |
1da177e4 | 1211 | return -ERESTARTSYS; |
1da177e4 LT |
1212 | |
1213 | if (portp->rc != 0) | |
4ac4360b AC |
1214 | return -EIO; |
1215 | return 0; | |
1da177e4 LT |
1216 | } |
1217 | ||
1218 | /*****************************************************************************/ | |
1219 | ||
1220 | /* | |
1221 | * Send the termios settings for this port to the slave. This sleeps | |
1222 | * waiting for the command to complete - so must have user context. | |
1223 | */ | |
1224 | ||
1f8ec435 | 1225 | static int stli_setport(struct stliport *portp) |
1da177e4 | 1226 | { |
1f8ec435 | 1227 | struct stlibrd *brdp; |
4ac4360b | 1228 | asyport_t aport; |
1da177e4 | 1229 | |
4ac4360b AC |
1230 | if (portp == NULL) |
1231 | return -ENODEV; | |
1232 | if (portp->tty == NULL) | |
1233 | return -ENODEV; | |
1328d737 | 1234 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1235 | return -ENODEV; |
1da177e4 | 1236 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1237 | if (brdp == NULL) |
1238 | return -ENODEV; | |
1da177e4 LT |
1239 | |
1240 | stli_mkasyport(portp, &aport, portp->tty->termios); | |
1241 | return(stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0)); | |
1242 | } | |
1243 | ||
1244 | /*****************************************************************************/ | |
1245 | ||
1246 | /* | |
1247 | * Possibly need to wait for carrier (DCD signal) to come high. Say | |
1248 | * maybe because if we are clocal then we don't need to wait... | |
1249 | */ | |
1250 | ||
1f8ec435 | 1251 | static int stli_waitcarrier(struct stlibrd *brdp, struct stliport *portp, struct file *filp) |
1da177e4 | 1252 | { |
4ac4360b AC |
1253 | unsigned long flags; |
1254 | int rc, doclocal; | |
1da177e4 LT |
1255 | |
1256 | rc = 0; | |
1257 | doclocal = 0; | |
1258 | ||
1259 | if (portp->tty->termios->c_cflag & CLOCAL) | |
1260 | doclocal++; | |
1261 | ||
4ac4360b | 1262 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
1263 | portp->openwaitcnt++; |
1264 | if (! tty_hung_up_p(filp)) | |
1265 | portp->refcount--; | |
4ac4360b | 1266 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 LT |
1267 | |
1268 | for (;;) { | |
1269 | stli_mkasysigs(&portp->asig, 1, 1); | |
1270 | if ((rc = stli_cmdwait(brdp, portp, A_SETSIGNALS, | |
1271 | &portp->asig, sizeof(asysigs_t), 0)) < 0) | |
1272 | break; | |
1273 | if (tty_hung_up_p(filp) || | |
1274 | ((portp->flags & ASYNC_INITIALIZED) == 0)) { | |
1275 | if (portp->flags & ASYNC_HUP_NOTIFY) | |
1276 | rc = -EBUSY; | |
1277 | else | |
1278 | rc = -ERESTARTSYS; | |
1279 | break; | |
1280 | } | |
1281 | if (((portp->flags & ASYNC_CLOSING) == 0) && | |
1282 | (doclocal || (portp->sigs & TIOCM_CD))) { | |
1283 | break; | |
1284 | } | |
1285 | if (signal_pending(current)) { | |
1286 | rc = -ERESTARTSYS; | |
1287 | break; | |
1288 | } | |
1289 | interruptible_sleep_on(&portp->open_wait); | |
1290 | } | |
1291 | ||
4ac4360b | 1292 | spin_lock_irqsave(&stli_lock, flags); |
1da177e4 LT |
1293 | if (! tty_hung_up_p(filp)) |
1294 | portp->refcount++; | |
1295 | portp->openwaitcnt--; | |
4ac4360b | 1296 | spin_unlock_irqrestore(&stli_lock, flags); |
1da177e4 | 1297 | |
4ac4360b | 1298 | return rc; |
1da177e4 LT |
1299 | } |
1300 | ||
1301 | /*****************************************************************************/ | |
1302 | ||
1303 | /* | |
1304 | * Write routine. Take the data and put it in the shared memory ring | |
1305 | * queue. If port is not already sending chars then need to mark the | |
1306 | * service bits for this port. | |
1307 | */ | |
1308 | ||
1309 | static int stli_write(struct tty_struct *tty, const unsigned char *buf, int count) | |
1310 | { | |
4ac4360b AC |
1311 | cdkasy_t __iomem *ap; |
1312 | cdkhdr_t __iomem *hdrp; | |
1313 | unsigned char __iomem *bits; | |
1314 | unsigned char __iomem *shbuf; | |
1315 | unsigned char *chbuf; | |
1f8ec435 JS |
1316 | struct stliport *portp; |
1317 | struct stlibrd *brdp; | |
4ac4360b AC |
1318 | unsigned int len, stlen, head, tail, size; |
1319 | unsigned long flags; | |
1da177e4 | 1320 | |
1da177e4 LT |
1321 | if (tty == stli_txcooktty) |
1322 | stli_flushchars(tty); | |
1323 | portp = tty->driver_data; | |
4ac4360b AC |
1324 | if (portp == NULL) |
1325 | return 0; | |
1328d737 | 1326 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1327 | return 0; |
1da177e4 | 1328 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1329 | if (brdp == NULL) |
1330 | return 0; | |
1da177e4 LT |
1331 | chbuf = (unsigned char *) buf; |
1332 | ||
1333 | /* | |
1334 | * All data is now local, shove as much as possible into shared memory. | |
1335 | */ | |
4ac4360b | 1336 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1337 | EBRDENABLE(brdp); |
4ac4360b AC |
1338 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1339 | head = (unsigned int) readw(&ap->txq.head); | |
1340 | tail = (unsigned int) readw(&ap->txq.tail); | |
1341 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1342 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1343 | size = portp->txsize; |
1344 | if (head >= tail) { | |
1345 | len = size - (head - tail) - 1; | |
1346 | stlen = size - head; | |
1347 | } else { | |
1348 | len = tail - head - 1; | |
1349 | stlen = len; | |
1350 | } | |
1351 | ||
a3f8d9d5 | 1352 | len = min(len, (unsigned int)count); |
1da177e4 | 1353 | count = 0; |
4ac4360b | 1354 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1355 | |
1356 | while (len > 0) { | |
a3f8d9d5 | 1357 | stlen = min(len, stlen); |
4ac4360b | 1358 | memcpy_toio(shbuf + head, chbuf, stlen); |
1da177e4 LT |
1359 | chbuf += stlen; |
1360 | len -= stlen; | |
1361 | count += stlen; | |
1362 | head += stlen; | |
1363 | if (head >= size) { | |
1364 | head = 0; | |
1365 | stlen = tail; | |
1366 | } | |
1367 | } | |
1368 | ||
4ac4360b AC |
1369 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1370 | writew(head, &ap->txq.head); | |
1da177e4 | 1371 | if (test_bit(ST_TXBUSY, &portp->state)) { |
4ac4360b AC |
1372 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1373 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1374 | } |
4ac4360b AC |
1375 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1376 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1377 | portp->portidx; |
4ac4360b | 1378 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1379 | set_bit(ST_TXBUSY, &portp->state); |
1380 | EBRDDISABLE(brdp); | |
4ac4360b | 1381 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1382 | |
1383 | return(count); | |
1384 | } | |
1385 | ||
1386 | /*****************************************************************************/ | |
1387 | ||
1388 | /* | |
1389 | * Output a single character. We put it into a temporary local buffer | |
1390 | * (for speed) then write out that buffer when the flushchars routine | |
1391 | * is called. There is a safety catch here so that if some other port | |
1392 | * writes chars before the current buffer has been, then we write them | |
1393 | * first them do the new ports. | |
1394 | */ | |
1395 | ||
1396 | static void stli_putchar(struct tty_struct *tty, unsigned char ch) | |
1397 | { | |
1da177e4 | 1398 | if (tty != stli_txcooktty) { |
4ac4360b | 1399 | if (stli_txcooktty != NULL) |
1da177e4 LT |
1400 | stli_flushchars(stli_txcooktty); |
1401 | stli_txcooktty = tty; | |
1402 | } | |
1403 | ||
1404 | stli_txcookbuf[stli_txcooksize++] = ch; | |
1405 | } | |
1406 | ||
1407 | /*****************************************************************************/ | |
1408 | ||
1409 | /* | |
1410 | * Transfer characters from the local TX cooking buffer to the board. | |
1411 | * We sort of ignore the tty that gets passed in here. We rely on the | |
1412 | * info stored with the TX cook buffer to tell us which port to flush | |
1413 | * the data on. In any case we clean out the TX cook buffer, for re-use | |
1414 | * by someone else. | |
1415 | */ | |
1416 | ||
1417 | static void stli_flushchars(struct tty_struct *tty) | |
1418 | { | |
4ac4360b AC |
1419 | cdkhdr_t __iomem *hdrp; |
1420 | unsigned char __iomem *bits; | |
1421 | cdkasy_t __iomem *ap; | |
1422 | struct tty_struct *cooktty; | |
1f8ec435 JS |
1423 | struct stliport *portp; |
1424 | struct stlibrd *brdp; | |
4ac4360b AC |
1425 | unsigned int len, stlen, head, tail, size, count, cooksize; |
1426 | unsigned char *buf; | |
1427 | unsigned char __iomem *shbuf; | |
1428 | unsigned long flags; | |
1da177e4 LT |
1429 | |
1430 | cooksize = stli_txcooksize; | |
1431 | cooktty = stli_txcooktty; | |
1432 | stli_txcooksize = 0; | |
1433 | stli_txcookrealsize = 0; | |
4ac4360b | 1434 | stli_txcooktty = NULL; |
1da177e4 | 1435 | |
4ac4360b | 1436 | if (tty == NULL) |
1da177e4 | 1437 | return; |
4ac4360b | 1438 | if (cooktty == NULL) |
1da177e4 LT |
1439 | return; |
1440 | if (tty != cooktty) | |
1441 | tty = cooktty; | |
1442 | if (cooksize == 0) | |
1443 | return; | |
1444 | ||
1445 | portp = tty->driver_data; | |
4ac4360b | 1446 | if (portp == NULL) |
1da177e4 | 1447 | return; |
1328d737 | 1448 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1449 | return; |
1450 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1451 | if (brdp == NULL) |
1da177e4 LT |
1452 | return; |
1453 | ||
4ac4360b | 1454 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
1455 | EBRDENABLE(brdp); |
1456 | ||
4ac4360b AC |
1457 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1458 | head = (unsigned int) readw(&ap->txq.head); | |
1459 | tail = (unsigned int) readw(&ap->txq.tail); | |
1460 | if (tail != ((unsigned int) readw(&ap->txq.tail))) | |
1461 | tail = (unsigned int) readw(&ap->txq.tail); | |
1da177e4 LT |
1462 | size = portp->txsize; |
1463 | if (head >= tail) { | |
1464 | len = size - (head - tail) - 1; | |
1465 | stlen = size - head; | |
1466 | } else { | |
1467 | len = tail - head - 1; | |
1468 | stlen = len; | |
1469 | } | |
1470 | ||
a3f8d9d5 | 1471 | len = min(len, cooksize); |
1da177e4 | 1472 | count = 0; |
29756fa3 | 1473 | shbuf = EBRDGETMEMPTR(brdp, portp->txoffset); |
1da177e4 LT |
1474 | buf = stli_txcookbuf; |
1475 | ||
1476 | while (len > 0) { | |
a3f8d9d5 | 1477 | stlen = min(len, stlen); |
4ac4360b | 1478 | memcpy_toio(shbuf + head, buf, stlen); |
1da177e4 LT |
1479 | buf += stlen; |
1480 | len -= stlen; | |
1481 | count += stlen; | |
1482 | head += stlen; | |
1483 | if (head >= size) { | |
1484 | head = 0; | |
1485 | stlen = tail; | |
1486 | } | |
1487 | } | |
1488 | ||
4ac4360b AC |
1489 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
1490 | writew(head, &ap->txq.head); | |
1da177e4 LT |
1491 | |
1492 | if (test_bit(ST_TXBUSY, &portp->state)) { | |
4ac4360b AC |
1493 | if (readl(&ap->changed.data) & DT_TXEMPTY) |
1494 | writel(readl(&ap->changed.data) & ~DT_TXEMPTY, &ap->changed.data); | |
1da177e4 | 1495 | } |
4ac4360b AC |
1496 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1497 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 1498 | portp->portidx; |
4ac4360b | 1499 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
1500 | set_bit(ST_TXBUSY, &portp->state); |
1501 | ||
1502 | EBRDDISABLE(brdp); | |
4ac4360b | 1503 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1504 | } |
1505 | ||
1506 | /*****************************************************************************/ | |
1507 | ||
1508 | static int stli_writeroom(struct tty_struct *tty) | |
1509 | { | |
4ac4360b | 1510 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1511 | struct stliport *portp; |
1512 | struct stlibrd *brdp; | |
4ac4360b AC |
1513 | unsigned int head, tail, len; |
1514 | unsigned long flags; | |
1da177e4 | 1515 | |
1da177e4 LT |
1516 | if (tty == stli_txcooktty) { |
1517 | if (stli_txcookrealsize != 0) { | |
1518 | len = stli_txcookrealsize - stli_txcooksize; | |
4ac4360b | 1519 | return len; |
1da177e4 LT |
1520 | } |
1521 | } | |
1522 | ||
1523 | portp = tty->driver_data; | |
4ac4360b AC |
1524 | if (portp == NULL) |
1525 | return 0; | |
1328d737 | 1526 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1527 | return 0; |
1da177e4 | 1528 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1529 | if (brdp == NULL) |
1530 | return 0; | |
1da177e4 | 1531 | |
4ac4360b | 1532 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1533 | EBRDENABLE(brdp); |
4ac4360b AC |
1534 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1535 | head = (unsigned int) readw(&rp->head); | |
1536 | tail = (unsigned int) readw(&rp->tail); | |
1537 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1538 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1539 | len = (head >= tail) ? (portp->txsize - (head - tail)) : (tail - head); |
1540 | len--; | |
1541 | EBRDDISABLE(brdp); | |
4ac4360b | 1542 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
1543 | |
1544 | if (tty == stli_txcooktty) { | |
1545 | stli_txcookrealsize = len; | |
1546 | len -= stli_txcooksize; | |
1547 | } | |
4ac4360b | 1548 | return len; |
1da177e4 LT |
1549 | } |
1550 | ||
1551 | /*****************************************************************************/ | |
1552 | ||
1553 | /* | |
1554 | * Return the number of characters in the transmit buffer. Normally we | |
1555 | * will return the number of chars in the shared memory ring queue. | |
1556 | * We need to kludge around the case where the shared memory buffer is | |
1557 | * empty but not all characters have drained yet, for this case just | |
1558 | * return that there is 1 character in the buffer! | |
1559 | */ | |
1560 | ||
1561 | static int stli_charsinbuffer(struct tty_struct *tty) | |
1562 | { | |
4ac4360b | 1563 | cdkasyrq_t __iomem *rp; |
1f8ec435 JS |
1564 | struct stliport *portp; |
1565 | struct stlibrd *brdp; | |
4ac4360b AC |
1566 | unsigned int head, tail, len; |
1567 | unsigned long flags; | |
1da177e4 | 1568 | |
1da177e4 LT |
1569 | if (tty == stli_txcooktty) |
1570 | stli_flushchars(tty); | |
1571 | portp = tty->driver_data; | |
4ac4360b AC |
1572 | if (portp == NULL) |
1573 | return 0; | |
1328d737 | 1574 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1575 | return 0; |
1da177e4 | 1576 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1577 | if (brdp == NULL) |
1578 | return 0; | |
1da177e4 | 1579 | |
4ac4360b | 1580 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1581 | EBRDENABLE(brdp); |
4ac4360b AC |
1582 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->txq; |
1583 | head = (unsigned int) readw(&rp->head); | |
1584 | tail = (unsigned int) readw(&rp->tail); | |
1585 | if (tail != ((unsigned int) readw(&rp->tail))) | |
1586 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
1587 | len = (head >= tail) ? (head - tail) : (portp->txsize - (tail - head)); |
1588 | if ((len == 0) && test_bit(ST_TXBUSY, &portp->state)) | |
1589 | len = 1; | |
1590 | EBRDDISABLE(brdp); | |
4ac4360b | 1591 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 | 1592 | |
4ac4360b | 1593 | return len; |
1da177e4 LT |
1594 | } |
1595 | ||
1596 | /*****************************************************************************/ | |
1597 | ||
1598 | /* | |
1599 | * Generate the serial struct info. | |
1600 | */ | |
1601 | ||
1f8ec435 | 1602 | static int stli_getserial(struct stliport *portp, struct serial_struct __user *sp) |
1da177e4 | 1603 | { |
4ac4360b | 1604 | struct serial_struct sio; |
1f8ec435 | 1605 | struct stlibrd *brdp; |
1da177e4 LT |
1606 | |
1607 | memset(&sio, 0, sizeof(struct serial_struct)); | |
1608 | sio.type = PORT_UNKNOWN; | |
1609 | sio.line = portp->portnr; | |
1610 | sio.irq = 0; | |
1611 | sio.flags = portp->flags; | |
1612 | sio.baud_base = portp->baud_base; | |
1613 | sio.close_delay = portp->close_delay; | |
1614 | sio.closing_wait = portp->closing_wait; | |
1615 | sio.custom_divisor = portp->custom_divisor; | |
1616 | sio.xmit_fifo_size = 0; | |
1617 | sio.hub6 = 0; | |
1618 | ||
1619 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1620 | if (brdp != NULL) |
1da177e4 LT |
1621 | sio.port = brdp->iobase; |
1622 | ||
1623 | return copy_to_user(sp, &sio, sizeof(struct serial_struct)) ? | |
1624 | -EFAULT : 0; | |
1625 | } | |
1626 | ||
1627 | /*****************************************************************************/ | |
1628 | ||
1629 | /* | |
1630 | * Set port according to the serial struct info. | |
1631 | * At this point we do not do any auto-configure stuff, so we will | |
1632 | * just quietly ignore any requests to change irq, etc. | |
1633 | */ | |
1634 | ||
1f8ec435 | 1635 | static int stli_setserial(struct stliport *portp, struct serial_struct __user *sp) |
1da177e4 | 1636 | { |
4ac4360b AC |
1637 | struct serial_struct sio; |
1638 | int rc; | |
1da177e4 LT |
1639 | |
1640 | if (copy_from_user(&sio, sp, sizeof(struct serial_struct))) | |
1641 | return -EFAULT; | |
1642 | if (!capable(CAP_SYS_ADMIN)) { | |
1643 | if ((sio.baud_base != portp->baud_base) || | |
1644 | (sio.close_delay != portp->close_delay) || | |
1645 | ((sio.flags & ~ASYNC_USR_MASK) != | |
1646 | (portp->flags & ~ASYNC_USR_MASK))) | |
4ac4360b | 1647 | return -EPERM; |
1da177e4 LT |
1648 | } |
1649 | ||
1650 | portp->flags = (portp->flags & ~ASYNC_USR_MASK) | | |
1651 | (sio.flags & ASYNC_USR_MASK); | |
1652 | portp->baud_base = sio.baud_base; | |
1653 | portp->close_delay = sio.close_delay; | |
1654 | portp->closing_wait = sio.closing_wait; | |
1655 | portp->custom_divisor = sio.custom_divisor; | |
1656 | ||
1657 | if ((rc = stli_setport(portp)) < 0) | |
4ac4360b AC |
1658 | return rc; |
1659 | return 0; | |
1da177e4 LT |
1660 | } |
1661 | ||
1662 | /*****************************************************************************/ | |
1663 | ||
1664 | static int stli_tiocmget(struct tty_struct *tty, struct file *file) | |
1665 | { | |
1f8ec435 JS |
1666 | struct stliport *portp = tty->driver_data; |
1667 | struct stlibrd *brdp; | |
1da177e4 LT |
1668 | int rc; |
1669 | ||
4ac4360b AC |
1670 | if (portp == NULL) |
1671 | return -ENODEV; | |
1328d737 | 1672 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1673 | return 0; |
1da177e4 | 1674 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1675 | if (brdp == NULL) |
1676 | return 0; | |
1da177e4 | 1677 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1678 | return -EIO; |
1da177e4 LT |
1679 | |
1680 | if ((rc = stli_cmdwait(brdp, portp, A_GETSIGNALS, | |
1681 | &portp->asig, sizeof(asysigs_t), 1)) < 0) | |
4ac4360b | 1682 | return rc; |
1da177e4 LT |
1683 | |
1684 | return stli_mktiocm(portp->asig.sigvalue); | |
1685 | } | |
1686 | ||
1687 | static int stli_tiocmset(struct tty_struct *tty, struct file *file, | |
1688 | unsigned int set, unsigned int clear) | |
1689 | { | |
1f8ec435 JS |
1690 | struct stliport *portp = tty->driver_data; |
1691 | struct stlibrd *brdp; | |
1da177e4 LT |
1692 | int rts = -1, dtr = -1; |
1693 | ||
4ac4360b AC |
1694 | if (portp == NULL) |
1695 | return -ENODEV; | |
1328d737 | 1696 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1697 | return 0; |
1da177e4 | 1698 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1699 | if (brdp == NULL) |
1700 | return 0; | |
1da177e4 | 1701 | if (tty->flags & (1 << TTY_IO_ERROR)) |
4ac4360b | 1702 | return -EIO; |
1da177e4 LT |
1703 | |
1704 | if (set & TIOCM_RTS) | |
1705 | rts = 1; | |
1706 | if (set & TIOCM_DTR) | |
1707 | dtr = 1; | |
1708 | if (clear & TIOCM_RTS) | |
1709 | rts = 0; | |
1710 | if (clear & TIOCM_DTR) | |
1711 | dtr = 0; | |
1712 | ||
1713 | stli_mkasysigs(&portp->asig, dtr, rts); | |
1714 | ||
1715 | return stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1716 | sizeof(asysigs_t), 0); | |
1717 | } | |
1718 | ||
1719 | static int stli_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) | |
1720 | { | |
1f8ec435 JS |
1721 | struct stliport *portp; |
1722 | struct stlibrd *brdp; | |
4ac4360b AC |
1723 | unsigned int ival; |
1724 | int rc; | |
1da177e4 LT |
1725 | void __user *argp = (void __user *)arg; |
1726 | ||
1da177e4 | 1727 | portp = tty->driver_data; |
4ac4360b AC |
1728 | if (portp == NULL) |
1729 | return -ENODEV; | |
1328d737 | 1730 | if (portp->brdnr >= stli_nrbrds) |
4ac4360b | 1731 | return 0; |
1da177e4 | 1732 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
1733 | if (brdp == NULL) |
1734 | return 0; | |
1da177e4 LT |
1735 | |
1736 | if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) && | |
1737 | (cmd != COM_GETPORTSTATS) && (cmd != COM_CLRPORTSTATS)) { | |
1738 | if (tty->flags & (1 << TTY_IO_ERROR)) | |
4ac4360b | 1739 | return -EIO; |
1da177e4 LT |
1740 | } |
1741 | ||
1742 | rc = 0; | |
1743 | ||
1744 | switch (cmd) { | |
1745 | case TIOCGSOFTCAR: | |
1746 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), | |
1747 | (unsigned __user *) arg); | |
1748 | break; | |
1749 | case TIOCSSOFTCAR: | |
1750 | if ((rc = get_user(ival, (unsigned __user *) arg)) == 0) | |
1751 | tty->termios->c_cflag = | |
1752 | (tty->termios->c_cflag & ~CLOCAL) | | |
1753 | (ival ? CLOCAL : 0); | |
1754 | break; | |
1755 | case TIOCGSERIAL: | |
1756 | rc = stli_getserial(portp, argp); | |
1757 | break; | |
1758 | case TIOCSSERIAL: | |
1759 | rc = stli_setserial(portp, argp); | |
1760 | break; | |
1761 | case STL_GETPFLAG: | |
1762 | rc = put_user(portp->pflag, (unsigned __user *)argp); | |
1763 | break; | |
1764 | case STL_SETPFLAG: | |
1765 | if ((rc = get_user(portp->pflag, (unsigned __user *)argp)) == 0) | |
1766 | stli_setport(portp); | |
1767 | break; | |
1768 | case COM_GETPORTSTATS: | |
1769 | rc = stli_getportstats(portp, argp); | |
1770 | break; | |
1771 | case COM_CLRPORTSTATS: | |
1772 | rc = stli_clrportstats(portp, argp); | |
1773 | break; | |
1774 | case TIOCSERCONFIG: | |
1775 | case TIOCSERGWILD: | |
1776 | case TIOCSERSWILD: | |
1777 | case TIOCSERGETLSR: | |
1778 | case TIOCSERGSTRUCT: | |
1779 | case TIOCSERGETMULTI: | |
1780 | case TIOCSERSETMULTI: | |
1781 | default: | |
1782 | rc = -ENOIOCTLCMD; | |
1783 | break; | |
1784 | } | |
1785 | ||
4ac4360b | 1786 | return rc; |
1da177e4 LT |
1787 | } |
1788 | ||
1789 | /*****************************************************************************/ | |
1790 | ||
1791 | /* | |
1792 | * This routine assumes that we have user context and can sleep. | |
1793 | * Looks like it is true for the current ttys implementation..!! | |
1794 | */ | |
1795 | ||
606d099c | 1796 | static void stli_settermios(struct tty_struct *tty, struct ktermios *old) |
1da177e4 | 1797 | { |
1f8ec435 JS |
1798 | struct stliport *portp; |
1799 | struct stlibrd *brdp; | |
606d099c | 1800 | struct ktermios *tiosp; |
4ac4360b | 1801 | asyport_t aport; |
1da177e4 | 1802 | |
4ac4360b | 1803 | if (tty == NULL) |
1da177e4 LT |
1804 | return; |
1805 | portp = tty->driver_data; | |
4ac4360b | 1806 | if (portp == NULL) |
1da177e4 | 1807 | return; |
1328d737 | 1808 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1809 | return; |
1810 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1811 | if (brdp == NULL) |
1da177e4 LT |
1812 | return; |
1813 | ||
1814 | tiosp = tty->termios; | |
1815 | if ((tiosp->c_cflag == old->c_cflag) && | |
1816 | (tiosp->c_iflag == old->c_iflag)) | |
1817 | return; | |
1818 | ||
1819 | stli_mkasyport(portp, &aport, tiosp); | |
1820 | stli_cmdwait(brdp, portp, A_SETPORT, &aport, sizeof(asyport_t), 0); | |
1821 | stli_mkasysigs(&portp->asig, ((tiosp->c_cflag & CBAUD) ? 1 : 0), -1); | |
1822 | stli_cmdwait(brdp, portp, A_SETSIGNALS, &portp->asig, | |
1823 | sizeof(asysigs_t), 0); | |
1824 | if ((old->c_cflag & CRTSCTS) && ((tiosp->c_cflag & CRTSCTS) == 0)) | |
1825 | tty->hw_stopped = 0; | |
1826 | if (((old->c_cflag & CLOCAL) == 0) && (tiosp->c_cflag & CLOCAL)) | |
1827 | wake_up_interruptible(&portp->open_wait); | |
1828 | } | |
1829 | ||
1830 | /*****************************************************************************/ | |
1831 | ||
1832 | /* | |
1833 | * Attempt to flow control who ever is sending us data. We won't really | |
1834 | * do any flow control action here. We can't directly, and even if we | |
1835 | * wanted to we would have to send a command to the slave. The slave | |
1836 | * knows how to flow control, and will do so when its buffers reach its | |
1837 | * internal high water marks. So what we will do is set a local state | |
1838 | * bit that will stop us sending any RX data up from the poll routine | |
1839 | * (which is the place where RX data from the slave is handled). | |
1840 | */ | |
1841 | ||
1842 | static void stli_throttle(struct tty_struct *tty) | |
1843 | { | |
1f8ec435 | 1844 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1845 | if (portp == NULL) |
1da177e4 | 1846 | return; |
1da177e4 LT |
1847 | set_bit(ST_RXSTOP, &portp->state); |
1848 | } | |
1849 | ||
1850 | /*****************************************************************************/ | |
1851 | ||
1852 | /* | |
1853 | * Unflow control the device sending us data... That means that all | |
1854 | * we have to do is clear the RXSTOP state bit. The next poll call | |
1855 | * will then be able to pass the RX data back up. | |
1856 | */ | |
1857 | ||
1858 | static void stli_unthrottle(struct tty_struct *tty) | |
1859 | { | |
1f8ec435 | 1860 | struct stliport *portp = tty->driver_data; |
4ac4360b | 1861 | if (portp == NULL) |
1da177e4 | 1862 | return; |
1da177e4 LT |
1863 | clear_bit(ST_RXSTOP, &portp->state); |
1864 | } | |
1865 | ||
1866 | /*****************************************************************************/ | |
1867 | ||
1868 | /* | |
4ac4360b | 1869 | * Stop the transmitter. |
1da177e4 LT |
1870 | */ |
1871 | ||
1872 | static void stli_stop(struct tty_struct *tty) | |
1873 | { | |
1da177e4 LT |
1874 | } |
1875 | ||
1876 | /*****************************************************************************/ | |
1877 | ||
1878 | /* | |
4ac4360b | 1879 | * Start the transmitter again. |
1da177e4 LT |
1880 | */ |
1881 | ||
1882 | static void stli_start(struct tty_struct *tty) | |
1883 | { | |
1da177e4 LT |
1884 | } |
1885 | ||
1886 | /*****************************************************************************/ | |
1887 | ||
1888 | /* | |
1889 | * Scheduler called hang up routine. This is called from the scheduler, | |
1890 | * not direct from the driver "poll" routine. We can't call it there | |
1891 | * since the real local hangup code will enable/disable the board and | |
1892 | * other things that we can't do while handling the poll. Much easier | |
1893 | * to deal with it some time later (don't really care when, hangups | |
1894 | * aren't that time critical). | |
1895 | */ | |
1896 | ||
3e577a80 | 1897 | static void stli_dohangup(struct work_struct *ugly_api) |
1da177e4 | 1898 | { |
1f8ec435 | 1899 | struct stliport *portp = container_of(ugly_api, struct stliport, tqhangup); |
4ac4360b AC |
1900 | if (portp->tty != NULL) { |
1901 | tty_hangup(portp->tty); | |
1da177e4 LT |
1902 | } |
1903 | } | |
1904 | ||
1905 | /*****************************************************************************/ | |
1906 | ||
1907 | /* | |
1908 | * Hangup this port. This is pretty much like closing the port, only | |
1909 | * a little more brutal. No waiting for data to drain. Shutdown the | |
1910 | * port and maybe drop signals. This is rather tricky really. We want | |
1911 | * to close the port as well. | |
1912 | */ | |
1913 | ||
1914 | static void stli_hangup(struct tty_struct *tty) | |
1915 | { | |
1f8ec435 JS |
1916 | struct stliport *portp; |
1917 | struct stlibrd *brdp; | |
4ac4360b | 1918 | unsigned long flags; |
1da177e4 | 1919 | |
1da177e4 | 1920 | portp = tty->driver_data; |
4ac4360b | 1921 | if (portp == NULL) |
1da177e4 | 1922 | return; |
1328d737 | 1923 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1924 | return; |
1925 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1926 | if (brdp == NULL) |
1da177e4 LT |
1927 | return; |
1928 | ||
1929 | portp->flags &= ~ASYNC_INITIALIZED; | |
1930 | ||
4ac4360b | 1931 | if (!test_bit(ST_CLOSING, &portp->state)) |
1da177e4 | 1932 | stli_rawclose(brdp, portp, 0, 0); |
4ac4360b AC |
1933 | |
1934 | spin_lock_irqsave(&stli_lock, flags); | |
1da177e4 LT |
1935 | if (tty->termios->c_cflag & HUPCL) { |
1936 | stli_mkasysigs(&portp->asig, 0, 0); | |
1937 | if (test_bit(ST_CMDING, &portp->state)) { | |
1938 | set_bit(ST_DOSIGS, &portp->state); | |
1939 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1940 | set_bit(ST_DOFLUSHRX, &portp->state); | |
1941 | } else { | |
1942 | stli_sendcmd(brdp, portp, A_SETSIGNALSF, | |
1943 | &portp->asig, sizeof(asysigs_t), 0); | |
1944 | } | |
1945 | } | |
1da177e4 LT |
1946 | |
1947 | clear_bit(ST_TXBUSY, &portp->state); | |
1948 | clear_bit(ST_RXSTOP, &portp->state); | |
1949 | set_bit(TTY_IO_ERROR, &tty->flags); | |
4ac4360b | 1950 | portp->tty = NULL; |
1da177e4 LT |
1951 | portp->flags &= ~ASYNC_NORMAL_ACTIVE; |
1952 | portp->refcount = 0; | |
4ac4360b AC |
1953 | spin_unlock_irqrestore(&stli_lock, flags); |
1954 | ||
1da177e4 LT |
1955 | wake_up_interruptible(&portp->open_wait); |
1956 | } | |
1957 | ||
1958 | /*****************************************************************************/ | |
1959 | ||
1960 | /* | |
1961 | * Flush characters from the lower buffer. We may not have user context | |
1962 | * so we cannot sleep waiting for it to complete. Also we need to check | |
1963 | * if there is chars for this port in the TX cook buffer, and flush them | |
1964 | * as well. | |
1965 | */ | |
1966 | ||
1967 | static void stli_flushbuffer(struct tty_struct *tty) | |
1968 | { | |
1f8ec435 JS |
1969 | struct stliport *portp; |
1970 | struct stlibrd *brdp; | |
4ac4360b | 1971 | unsigned long ftype, flags; |
1da177e4 | 1972 | |
1da177e4 | 1973 | portp = tty->driver_data; |
4ac4360b | 1974 | if (portp == NULL) |
1da177e4 | 1975 | return; |
1328d737 | 1976 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
1977 | return; |
1978 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 1979 | if (brdp == NULL) |
1da177e4 LT |
1980 | return; |
1981 | ||
4ac4360b | 1982 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 | 1983 | if (tty == stli_txcooktty) { |
4ac4360b | 1984 | stli_txcooktty = NULL; |
1da177e4 LT |
1985 | stli_txcooksize = 0; |
1986 | stli_txcookrealsize = 0; | |
1987 | } | |
1988 | if (test_bit(ST_CMDING, &portp->state)) { | |
1989 | set_bit(ST_DOFLUSHTX, &portp->state); | |
1990 | } else { | |
1991 | ftype = FLUSHTX; | |
1992 | if (test_bit(ST_DOFLUSHRX, &portp->state)) { | |
1993 | ftype |= FLUSHRX; | |
1994 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
1995 | } | |
4ac4360b | 1996 | __stli_sendcmd(brdp, portp, A_FLUSH, &ftype, sizeof(u32), 0); |
1da177e4 | 1997 | } |
4ac4360b AC |
1998 | spin_unlock_irqrestore(&brd_lock, flags); |
1999 | tty_wakeup(tty); | |
1da177e4 LT |
2000 | } |
2001 | ||
2002 | /*****************************************************************************/ | |
2003 | ||
2004 | static void stli_breakctl(struct tty_struct *tty, int state) | |
2005 | { | |
1f8ec435 JS |
2006 | struct stlibrd *brdp; |
2007 | struct stliport *portp; | |
1da177e4 | 2008 | long arg; |
1da177e4 | 2009 | |
1da177e4 | 2010 | portp = tty->driver_data; |
4ac4360b | 2011 | if (portp == NULL) |
1da177e4 | 2012 | return; |
1328d737 | 2013 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
2014 | return; |
2015 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 2016 | if (brdp == NULL) |
1da177e4 LT |
2017 | return; |
2018 | ||
1da177e4 LT |
2019 | arg = (state == -1) ? BREAKON : BREAKOFF; |
2020 | stli_cmdwait(brdp, portp, A_BREAK, &arg, sizeof(long), 0); | |
1da177e4 LT |
2021 | } |
2022 | ||
2023 | /*****************************************************************************/ | |
2024 | ||
2025 | static void stli_waituntilsent(struct tty_struct *tty, int timeout) | |
2026 | { | |
1f8ec435 | 2027 | struct stliport *portp; |
4ac4360b | 2028 | unsigned long tend; |
1da177e4 | 2029 | |
4ac4360b | 2030 | if (tty == NULL) |
1da177e4 LT |
2031 | return; |
2032 | portp = tty->driver_data; | |
4ac4360b | 2033 | if (portp == NULL) |
1da177e4 LT |
2034 | return; |
2035 | ||
2036 | if (timeout == 0) | |
2037 | timeout = HZ; | |
2038 | tend = jiffies + timeout; | |
2039 | ||
2040 | while (test_bit(ST_TXBUSY, &portp->state)) { | |
2041 | if (signal_pending(current)) | |
2042 | break; | |
2043 | msleep_interruptible(20); | |
2044 | if (time_after_eq(jiffies, tend)) | |
2045 | break; | |
2046 | } | |
2047 | } | |
2048 | ||
2049 | /*****************************************************************************/ | |
2050 | ||
2051 | static void stli_sendxchar(struct tty_struct *tty, char ch) | |
2052 | { | |
1f8ec435 JS |
2053 | struct stlibrd *brdp; |
2054 | struct stliport *portp; | |
1da177e4 LT |
2055 | asyctrl_t actrl; |
2056 | ||
1da177e4 | 2057 | portp = tty->driver_data; |
4ac4360b | 2058 | if (portp == NULL) |
1da177e4 | 2059 | return; |
1328d737 | 2060 | if (portp->brdnr >= stli_nrbrds) |
1da177e4 LT |
2061 | return; |
2062 | brdp = stli_brds[portp->brdnr]; | |
4ac4360b | 2063 | if (brdp == NULL) |
1da177e4 LT |
2064 | return; |
2065 | ||
2066 | memset(&actrl, 0, sizeof(asyctrl_t)); | |
2067 | if (ch == STOP_CHAR(tty)) { | |
2068 | actrl.rxctrl = CT_STOPFLOW; | |
2069 | } else if (ch == START_CHAR(tty)) { | |
2070 | actrl.rxctrl = CT_STARTFLOW; | |
2071 | } else { | |
2072 | actrl.txctrl = CT_SENDCHR; | |
2073 | actrl.tximdch = ch; | |
2074 | } | |
1da177e4 LT |
2075 | stli_cmdwait(brdp, portp, A_PORTCTRL, &actrl, sizeof(asyctrl_t), 0); |
2076 | } | |
2077 | ||
2078 | /*****************************************************************************/ | |
2079 | ||
2080 | #define MAXLINE 80 | |
2081 | ||
2082 | /* | |
2083 | * Format info for a specified port. The line is deliberately limited | |
2084 | * to 80 characters. (If it is too long it will be truncated, if too | |
2085 | * short then padded with spaces). | |
2086 | */ | |
2087 | ||
1f8ec435 | 2088 | static int stli_portinfo(struct stlibrd *brdp, struct stliport *portp, int portnr, char *pos) |
1da177e4 | 2089 | { |
4ac4360b AC |
2090 | char *sp, *uart; |
2091 | int rc, cnt; | |
1da177e4 LT |
2092 | |
2093 | rc = stli_portcmdstats(portp); | |
2094 | ||
2095 | uart = "UNKNOWN"; | |
2096 | if (brdp->state & BST_STARTED) { | |
2097 | switch (stli_comstats.hwid) { | |
4ac4360b AC |
2098 | case 0: uart = "2681"; break; |
2099 | case 1: uart = "SC26198"; break; | |
2100 | default:uart = "CD1400"; break; | |
1da177e4 LT |
2101 | } |
2102 | } | |
2103 | ||
2104 | sp = pos; | |
2105 | sp += sprintf(sp, "%d: uart:%s ", portnr, uart); | |
2106 | ||
2107 | if ((brdp->state & BST_STARTED) && (rc >= 0)) { | |
2108 | sp += sprintf(sp, "tx:%d rx:%d", (int) stli_comstats.txtotal, | |
2109 | (int) stli_comstats.rxtotal); | |
2110 | ||
2111 | if (stli_comstats.rxframing) | |
2112 | sp += sprintf(sp, " fe:%d", | |
2113 | (int) stli_comstats.rxframing); | |
2114 | if (stli_comstats.rxparity) | |
2115 | sp += sprintf(sp, " pe:%d", | |
2116 | (int) stli_comstats.rxparity); | |
2117 | if (stli_comstats.rxbreaks) | |
2118 | sp += sprintf(sp, " brk:%d", | |
2119 | (int) stli_comstats.rxbreaks); | |
2120 | if (stli_comstats.rxoverrun) | |
2121 | sp += sprintf(sp, " oe:%d", | |
2122 | (int) stli_comstats.rxoverrun); | |
2123 | ||
2124 | cnt = sprintf(sp, "%s%s%s%s%s ", | |
2125 | (stli_comstats.signals & TIOCM_RTS) ? "|RTS" : "", | |
2126 | (stli_comstats.signals & TIOCM_CTS) ? "|CTS" : "", | |
2127 | (stli_comstats.signals & TIOCM_DTR) ? "|DTR" : "", | |
2128 | (stli_comstats.signals & TIOCM_CD) ? "|DCD" : "", | |
2129 | (stli_comstats.signals & TIOCM_DSR) ? "|DSR" : ""); | |
2130 | *sp = ' '; | |
2131 | sp += cnt; | |
2132 | } | |
2133 | ||
2134 | for (cnt = (sp - pos); (cnt < (MAXLINE - 1)); cnt++) | |
2135 | *sp++ = ' '; | |
2136 | if (cnt >= MAXLINE) | |
2137 | pos[(MAXLINE - 2)] = '+'; | |
2138 | pos[(MAXLINE - 1)] = '\n'; | |
2139 | ||
2140 | return(MAXLINE); | |
2141 | } | |
2142 | ||
2143 | /*****************************************************************************/ | |
2144 | ||
2145 | /* | |
2146 | * Port info, read from the /proc file system. | |
2147 | */ | |
2148 | ||
2149 | static int stli_readproc(char *page, char **start, off_t off, int count, int *eof, void *data) | |
2150 | { | |
1f8ec435 JS |
2151 | struct stlibrd *brdp; |
2152 | struct stliport *portp; | |
1328d737 | 2153 | unsigned int brdnr, portnr, totalport; |
4ac4360b AC |
2154 | int curoff, maxoff; |
2155 | char *pos; | |
1da177e4 LT |
2156 | |
2157 | pos = page; | |
2158 | totalport = 0; | |
2159 | curoff = 0; | |
2160 | ||
2161 | if (off == 0) { | |
2162 | pos += sprintf(pos, "%s: version %s", stli_drvtitle, | |
2163 | stli_drvversion); | |
2164 | while (pos < (page + MAXLINE - 1)) | |
2165 | *pos++ = ' '; | |
2166 | *pos++ = '\n'; | |
2167 | } | |
2168 | curoff = MAXLINE; | |
2169 | ||
2170 | /* | |
2171 | * We scan through for each board, panel and port. The offset is | |
2172 | * calculated on the fly, and irrelevant ports are skipped. | |
2173 | */ | |
2174 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2175 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2176 | if (brdp == NULL) |
1da177e4 LT |
2177 | continue; |
2178 | if (brdp->state == 0) | |
2179 | continue; | |
2180 | ||
2181 | maxoff = curoff + (brdp->nrports * MAXLINE); | |
2182 | if (off >= maxoff) { | |
2183 | curoff = maxoff; | |
2184 | continue; | |
2185 | } | |
2186 | ||
2187 | totalport = brdnr * STL_MAXPORTS; | |
2188 | for (portnr = 0; (portnr < brdp->nrports); portnr++, | |
2189 | totalport++) { | |
2190 | portp = brdp->ports[portnr]; | |
4ac4360b | 2191 | if (portp == NULL) |
1da177e4 LT |
2192 | continue; |
2193 | if (off >= (curoff += MAXLINE)) | |
2194 | continue; | |
2195 | if ((pos - page + MAXLINE) > count) | |
2196 | goto stli_readdone; | |
2197 | pos += stli_portinfo(brdp, portp, totalport, pos); | |
2198 | } | |
2199 | } | |
2200 | ||
2201 | *eof = 1; | |
2202 | ||
2203 | stli_readdone: | |
2204 | *start = page; | |
2205 | return(pos - page); | |
2206 | } | |
2207 | ||
2208 | /*****************************************************************************/ | |
2209 | ||
2210 | /* | |
2211 | * Generic send command routine. This will send a message to the slave, | |
2212 | * of the specified type with the specified argument. Must be very | |
2213 | * careful of data that will be copied out from shared memory - | |
2214 | * containing command results. The command completion is all done from | |
2215 | * a poll routine that does not have user context. Therefore you cannot | |
2216 | * copy back directly into user space, or to the kernel stack of a | |
2217 | * process. This routine does not sleep, so can be called from anywhere. | |
4ac4360b AC |
2218 | * |
2219 | * The caller must hold the brd_lock (see also stli_sendcmd the usual | |
2220 | * entry point) | |
1da177e4 LT |
2221 | */ |
2222 | ||
1f8ec435 | 2223 | static void __stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
1da177e4 | 2224 | { |
4ac4360b AC |
2225 | cdkhdr_t __iomem *hdrp; |
2226 | cdkctrl_t __iomem *cp; | |
2227 | unsigned char __iomem *bits; | |
2228 | unsigned long flags; | |
1da177e4 | 2229 | |
4ac4360b | 2230 | spin_lock_irqsave(&brd_lock, flags); |
1da177e4 LT |
2231 | |
2232 | if (test_bit(ST_CMDING, &portp->state)) { | |
2233 | printk(KERN_ERR "STALLION: command already busy, cmd=%x!\n", | |
2234 | (int) cmd); | |
4ac4360b | 2235 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
2236 | return; |
2237 | } | |
2238 | ||
2239 | EBRDENABLE(brdp); | |
4ac4360b | 2240 | cp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->ctrl; |
1da177e4 | 2241 | if (size > 0) { |
4ac4360b | 2242 | memcpy_toio((void __iomem *) &(cp->args[0]), arg, size); |
1da177e4 LT |
2243 | if (copyback) { |
2244 | portp->argp = arg; | |
2245 | portp->argsize = size; | |
2246 | } | |
2247 | } | |
4ac4360b AC |
2248 | writel(0, &cp->status); |
2249 | writel(cmd, &cp->cmd); | |
2250 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); | |
2251 | bits = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset + | |
1da177e4 | 2252 | portp->portidx; |
4ac4360b | 2253 | writeb(readb(bits) | portp->portbit, bits); |
1da177e4 LT |
2254 | set_bit(ST_CMDING, &portp->state); |
2255 | EBRDDISABLE(brdp); | |
4ac4360b AC |
2256 | spin_unlock_irqrestore(&brd_lock, flags); |
2257 | } | |
2258 | ||
1f8ec435 | 2259 | static void stli_sendcmd(struct stlibrd *brdp, struct stliport *portp, unsigned long cmd, void *arg, int size, int copyback) |
4ac4360b AC |
2260 | { |
2261 | unsigned long flags; | |
2262 | ||
2263 | spin_lock_irqsave(&brd_lock, flags); | |
2264 | __stli_sendcmd(brdp, portp, cmd, arg, size, copyback); | |
2265 | spin_unlock_irqrestore(&brd_lock, flags); | |
1da177e4 LT |
2266 | } |
2267 | ||
2268 | /*****************************************************************************/ | |
2269 | ||
2270 | /* | |
2271 | * Read data from shared memory. This assumes that the shared memory | |
2272 | * is enabled and that interrupts are off. Basically we just empty out | |
2273 | * the shared memory buffer into the tty buffer. Must be careful to | |
2274 | * handle the case where we fill up the tty buffer, but still have | |
2275 | * more chars to unload. | |
2276 | */ | |
2277 | ||
1f8ec435 | 2278 | static void stli_read(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2279 | { |
4ac4360b AC |
2280 | cdkasyrq_t __iomem *rp; |
2281 | char __iomem *shbuf; | |
1da177e4 | 2282 | struct tty_struct *tty; |
4ac4360b AC |
2283 | unsigned int head, tail, size; |
2284 | unsigned int len, stlen; | |
1da177e4 LT |
2285 | |
2286 | if (test_bit(ST_RXSTOP, &portp->state)) | |
2287 | return; | |
2288 | tty = portp->tty; | |
4ac4360b | 2289 | if (tty == NULL) |
1da177e4 LT |
2290 | return; |
2291 | ||
4ac4360b AC |
2292 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2293 | head = (unsigned int) readw(&rp->head); | |
2294 | if (head != ((unsigned int) readw(&rp->head))) | |
2295 | head = (unsigned int) readw(&rp->head); | |
2296 | tail = (unsigned int) readw(&rp->tail); | |
1da177e4 LT |
2297 | size = portp->rxsize; |
2298 | if (head >= tail) { | |
2299 | len = head - tail; | |
2300 | stlen = len; | |
2301 | } else { | |
2302 | len = size - (tail - head); | |
2303 | stlen = size - tail; | |
2304 | } | |
2305 | ||
33f0f88f | 2306 | len = tty_buffer_request_room(tty, len); |
4ac4360b AC |
2307 | |
2308 | shbuf = (char __iomem *) EBRDGETMEMPTR(brdp, portp->rxoffset); | |
1da177e4 LT |
2309 | |
2310 | while (len > 0) { | |
4ac4360b AC |
2311 | unsigned char *cptr; |
2312 | ||
a3f8d9d5 | 2313 | stlen = min(len, stlen); |
4ac4360b AC |
2314 | tty_prepare_flip_string(tty, &cptr, stlen); |
2315 | memcpy_fromio(cptr, shbuf + tail, stlen); | |
1da177e4 LT |
2316 | len -= stlen; |
2317 | tail += stlen; | |
2318 | if (tail >= size) { | |
2319 | tail = 0; | |
2320 | stlen = head; | |
2321 | } | |
2322 | } | |
4ac4360b AC |
2323 | rp = &((cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr))->rxq; |
2324 | writew(tail, &rp->tail); | |
1da177e4 LT |
2325 | |
2326 | if (head != tail) | |
2327 | set_bit(ST_RXING, &portp->state); | |
2328 | ||
2329 | tty_schedule_flip(tty); | |
2330 | } | |
2331 | ||
2332 | /*****************************************************************************/ | |
2333 | ||
2334 | /* | |
2335 | * Set up and carry out any delayed commands. There is only a small set | |
2336 | * of slave commands that can be done "off-level". So it is not too | |
2337 | * difficult to deal with them here. | |
2338 | */ | |
2339 | ||
1f8ec435 | 2340 | static void stli_dodelaycmd(struct stliport *portp, cdkctrl_t __iomem *cp) |
1da177e4 | 2341 | { |
4ac4360b | 2342 | int cmd; |
1da177e4 LT |
2343 | |
2344 | if (test_bit(ST_DOSIGS, &portp->state)) { | |
2345 | if (test_bit(ST_DOFLUSHTX, &portp->state) && | |
2346 | test_bit(ST_DOFLUSHRX, &portp->state)) | |
2347 | cmd = A_SETSIGNALSF; | |
2348 | else if (test_bit(ST_DOFLUSHTX, &portp->state)) | |
2349 | cmd = A_SETSIGNALSFTX; | |
2350 | else if (test_bit(ST_DOFLUSHRX, &portp->state)) | |
2351 | cmd = A_SETSIGNALSFRX; | |
2352 | else | |
2353 | cmd = A_SETSIGNALS; | |
2354 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2355 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
2356 | clear_bit(ST_DOSIGS, &portp->state); | |
4ac4360b | 2357 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &portp->asig, |
1da177e4 | 2358 | sizeof(asysigs_t)); |
4ac4360b AC |
2359 | writel(0, &cp->status); |
2360 | writel(cmd, &cp->cmd); | |
1da177e4 LT |
2361 | set_bit(ST_CMDING, &portp->state); |
2362 | } else if (test_bit(ST_DOFLUSHTX, &portp->state) || | |
2363 | test_bit(ST_DOFLUSHRX, &portp->state)) { | |
2364 | cmd = ((test_bit(ST_DOFLUSHTX, &portp->state)) ? FLUSHTX : 0); | |
2365 | cmd |= ((test_bit(ST_DOFLUSHRX, &portp->state)) ? FLUSHRX : 0); | |
2366 | clear_bit(ST_DOFLUSHTX, &portp->state); | |
2367 | clear_bit(ST_DOFLUSHRX, &portp->state); | |
4ac4360b AC |
2368 | memcpy_toio((void __iomem *) &(cp->args[0]), (void *) &cmd, sizeof(int)); |
2369 | writel(0, &cp->status); | |
2370 | writel(A_FLUSH, &cp->cmd); | |
1da177e4 LT |
2371 | set_bit(ST_CMDING, &portp->state); |
2372 | } | |
2373 | } | |
2374 | ||
2375 | /*****************************************************************************/ | |
2376 | ||
2377 | /* | |
2378 | * Host command service checking. This handles commands or messages | |
2379 | * coming from the slave to the host. Must have board shared memory | |
2380 | * enabled and interrupts off when called. Notice that by servicing the | |
2381 | * read data last we don't need to change the shared memory pointer | |
2382 | * during processing (which is a slow IO operation). | |
2383 | * Return value indicates if this port is still awaiting actions from | |
2384 | * the slave (like open, command, or even TX data being sent). If 0 | |
2385 | * then port is still busy, otherwise no longer busy. | |
2386 | */ | |
2387 | ||
1f8ec435 | 2388 | static int stli_hostcmd(struct stlibrd *brdp, struct stliport *portp) |
1da177e4 | 2389 | { |
4ac4360b AC |
2390 | cdkasy_t __iomem *ap; |
2391 | cdkctrl_t __iomem *cp; | |
2392 | struct tty_struct *tty; | |
2393 | asynotify_t nt; | |
2394 | unsigned long oldsigs; | |
2395 | int rc, donerx; | |
2396 | ||
2397 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); | |
1da177e4 LT |
2398 | cp = &ap->ctrl; |
2399 | ||
2400 | /* | |
2401 | * Check if we are waiting for an open completion message. | |
2402 | */ | |
2403 | if (test_bit(ST_OPENING, &portp->state)) { | |
4ac4360b AC |
2404 | rc = readl(&cp->openarg); |
2405 | if (readb(&cp->open) == 0 && rc != 0) { | |
1da177e4 LT |
2406 | if (rc > 0) |
2407 | rc--; | |
4ac4360b | 2408 | writel(0, &cp->openarg); |
1da177e4 LT |
2409 | portp->rc = rc; |
2410 | clear_bit(ST_OPENING, &portp->state); | |
2411 | wake_up_interruptible(&portp->raw_wait); | |
2412 | } | |
2413 | } | |
2414 | ||
2415 | /* | |
2416 | * Check if we are waiting for a close completion message. | |
2417 | */ | |
2418 | if (test_bit(ST_CLOSING, &portp->state)) { | |
4ac4360b AC |
2419 | rc = (int) readl(&cp->closearg); |
2420 | if (readb(&cp->close) == 0 && rc != 0) { | |
1da177e4 LT |
2421 | if (rc > 0) |
2422 | rc--; | |
4ac4360b | 2423 | writel(0, &cp->closearg); |
1da177e4 LT |
2424 | portp->rc = rc; |
2425 | clear_bit(ST_CLOSING, &portp->state); | |
2426 | wake_up_interruptible(&portp->raw_wait); | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | /* | |
2431 | * Check if we are waiting for a command completion message. We may | |
2432 | * need to copy out the command results associated with this command. | |
2433 | */ | |
2434 | if (test_bit(ST_CMDING, &portp->state)) { | |
4ac4360b AC |
2435 | rc = readl(&cp->status); |
2436 | if (readl(&cp->cmd) == 0 && rc != 0) { | |
1da177e4 LT |
2437 | if (rc > 0) |
2438 | rc--; | |
4ac4360b AC |
2439 | if (portp->argp != NULL) { |
2440 | memcpy_fromio(portp->argp, (void __iomem *) &(cp->args[0]), | |
1da177e4 | 2441 | portp->argsize); |
4ac4360b | 2442 | portp->argp = NULL; |
1da177e4 | 2443 | } |
4ac4360b | 2444 | writel(0, &cp->status); |
1da177e4 LT |
2445 | portp->rc = rc; |
2446 | clear_bit(ST_CMDING, &portp->state); | |
2447 | stli_dodelaycmd(portp, cp); | |
2448 | wake_up_interruptible(&portp->raw_wait); | |
2449 | } | |
2450 | } | |
2451 | ||
2452 | /* | |
2453 | * Check for any notification messages ready. This includes lots of | |
2454 | * different types of events - RX chars ready, RX break received, | |
2455 | * TX data low or empty in the slave, modem signals changed state. | |
2456 | */ | |
2457 | donerx = 0; | |
2458 | ||
2459 | if (ap->notify) { | |
2460 | nt = ap->changed; | |
2461 | ap->notify = 0; | |
2462 | tty = portp->tty; | |
2463 | ||
2464 | if (nt.signal & SG_DCD) { | |
2465 | oldsigs = portp->sigs; | |
2466 | portp->sigs = stli_mktiocm(nt.sigvalue); | |
2467 | clear_bit(ST_GETSIGS, &portp->state); | |
2468 | if ((portp->sigs & TIOCM_CD) && | |
2469 | ((oldsigs & TIOCM_CD) == 0)) | |
2470 | wake_up_interruptible(&portp->open_wait); | |
2471 | if ((oldsigs & TIOCM_CD) && | |
2472 | ((portp->sigs & TIOCM_CD) == 0)) { | |
2473 | if (portp->flags & ASYNC_CHECK_CD) { | |
2474 | if (tty) | |
2475 | schedule_work(&portp->tqhangup); | |
2476 | } | |
2477 | } | |
2478 | } | |
2479 | ||
2480 | if (nt.data & DT_TXEMPTY) | |
2481 | clear_bit(ST_TXBUSY, &portp->state); | |
2482 | if (nt.data & (DT_TXEMPTY | DT_TXLOW)) { | |
4ac4360b AC |
2483 | if (tty != NULL) { |
2484 | tty_wakeup(tty); | |
2485 | EBRDENABLE(brdp); | |
1da177e4 LT |
2486 | wake_up_interruptible(&tty->write_wait); |
2487 | } | |
2488 | } | |
2489 | ||
2490 | if ((nt.data & DT_RXBREAK) && (portp->rxmarkmsk & BRKINT)) { | |
4ac4360b | 2491 | if (tty != NULL) { |
33f0f88f AC |
2492 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
2493 | if (portp->flags & ASYNC_SAK) { | |
2494 | do_SAK(tty); | |
2495 | EBRDENABLE(brdp); | |
1da177e4 | 2496 | } |
33f0f88f | 2497 | tty_schedule_flip(tty); |
1da177e4 LT |
2498 | } |
2499 | } | |
2500 | ||
2501 | if (nt.data & DT_RXBUSY) { | |
2502 | donerx++; | |
2503 | stli_read(brdp, portp); | |
2504 | } | |
2505 | } | |
2506 | ||
2507 | /* | |
2508 | * It might seem odd that we are checking for more RX chars here. | |
2509 | * But, we need to handle the case where the tty buffer was previously | |
2510 | * filled, but we had more characters to pass up. The slave will not | |
2511 | * send any more RX notify messages until the RX buffer has been emptied. | |
2512 | * But it will leave the service bits on (since the buffer is not empty). | |
2513 | * So from here we can try to process more RX chars. | |
2514 | */ | |
2515 | if ((!donerx) && test_bit(ST_RXING, &portp->state)) { | |
2516 | clear_bit(ST_RXING, &portp->state); | |
2517 | stli_read(brdp, portp); | |
2518 | } | |
2519 | ||
2520 | return((test_bit(ST_OPENING, &portp->state) || | |
2521 | test_bit(ST_CLOSING, &portp->state) || | |
2522 | test_bit(ST_CMDING, &portp->state) || | |
2523 | test_bit(ST_TXBUSY, &portp->state) || | |
2524 | test_bit(ST_RXING, &portp->state)) ? 0 : 1); | |
2525 | } | |
2526 | ||
2527 | /*****************************************************************************/ | |
2528 | ||
2529 | /* | |
2530 | * Service all ports on a particular board. Assumes that the boards | |
2531 | * shared memory is enabled, and that the page pointer is pointed | |
2532 | * at the cdk header structure. | |
2533 | */ | |
2534 | ||
1f8ec435 | 2535 | static void stli_brdpoll(struct stlibrd *brdp, cdkhdr_t __iomem *hdrp) |
1da177e4 | 2536 | { |
1f8ec435 | 2537 | struct stliport *portp; |
4ac4360b AC |
2538 | unsigned char hostbits[(STL_MAXCHANS / 8) + 1]; |
2539 | unsigned char slavebits[(STL_MAXCHANS / 8) + 1]; | |
2540 | unsigned char __iomem *slavep; | |
2541 | int bitpos, bitat, bitsize; | |
2542 | int channr, nrdevs, slavebitchange; | |
1da177e4 LT |
2543 | |
2544 | bitsize = brdp->bitsize; | |
2545 | nrdevs = brdp->nrdevs; | |
2546 | ||
2547 | /* | |
2548 | * Check if slave wants any service. Basically we try to do as | |
2549 | * little work as possible here. There are 2 levels of service | |
2550 | * bits. So if there is nothing to do we bail early. We check | |
2551 | * 8 service bits at a time in the inner loop, so we can bypass | |
2552 | * the lot if none of them want service. | |
2553 | */ | |
4ac4360b | 2554 | memcpy_fromio(&hostbits[0], (((unsigned char __iomem *) hdrp) + brdp->hostoffset), |
1da177e4 LT |
2555 | bitsize); |
2556 | ||
2557 | memset(&slavebits[0], 0, bitsize); | |
2558 | slavebitchange = 0; | |
2559 | ||
2560 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { | |
2561 | if (hostbits[bitpos] == 0) | |
2562 | continue; | |
2563 | channr = bitpos * 8; | |
2564 | for (bitat = 0x1; (channr < nrdevs); channr++, bitat <<= 1) { | |
2565 | if (hostbits[bitpos] & bitat) { | |
2566 | portp = brdp->ports[(channr - 1)]; | |
2567 | if (stli_hostcmd(brdp, portp)) { | |
2568 | slavebitchange++; | |
2569 | slavebits[bitpos] |= bitat; | |
2570 | } | |
2571 | } | |
2572 | } | |
2573 | } | |
2574 | ||
2575 | /* | |
2576 | * If any of the ports are no longer busy then update them in the | |
2577 | * slave request bits. We need to do this after, since a host port | |
2578 | * service may initiate more slave requests. | |
2579 | */ | |
2580 | if (slavebitchange) { | |
4ac4360b AC |
2581 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2582 | slavep = ((unsigned char __iomem *) hdrp) + brdp->slaveoffset; | |
1da177e4 | 2583 | for (bitpos = 0; (bitpos < bitsize); bitpos++) { |
4ac4360b AC |
2584 | if (readb(slavebits + bitpos)) |
2585 | writeb(readb(slavep + bitpos) & ~slavebits[bitpos], slavebits + bitpos); | |
1da177e4 LT |
2586 | } |
2587 | } | |
2588 | } | |
2589 | ||
2590 | /*****************************************************************************/ | |
2591 | ||
2592 | /* | |
2593 | * Driver poll routine. This routine polls the boards in use and passes | |
2594 | * messages back up to host when necessary. This is actually very | |
2595 | * CPU efficient, since we will always have the kernel poll clock, it | |
2596 | * adds only a few cycles when idle (since board service can be | |
2597 | * determined very easily), but when loaded generates no interrupts | |
2598 | * (with their expensive associated context change). | |
2599 | */ | |
2600 | ||
2601 | static void stli_poll(unsigned long arg) | |
2602 | { | |
4ac4360b | 2603 | cdkhdr_t __iomem *hdrp; |
1f8ec435 | 2604 | struct stlibrd *brdp; |
1328d737 | 2605 | unsigned int brdnr; |
1da177e4 LT |
2606 | |
2607 | stli_timerlist.expires = STLI_TIMEOUT; | |
2608 | add_timer(&stli_timerlist); | |
2609 | ||
2610 | /* | |
2611 | * Check each board and do any servicing required. | |
2612 | */ | |
2613 | for (brdnr = 0; (brdnr < stli_nrbrds); brdnr++) { | |
2614 | brdp = stli_brds[brdnr]; | |
4ac4360b | 2615 | if (brdp == NULL) |
1da177e4 LT |
2616 | continue; |
2617 | if ((brdp->state & BST_STARTED) == 0) | |
2618 | continue; | |
2619 | ||
4ac4360b | 2620 | spin_lock(&brd_lock); |
1da177e4 | 2621 | EBRDENABLE(brdp); |
4ac4360b AC |
2622 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
2623 | if (readb(&hdrp->hostreq)) | |
1da177e4 LT |
2624 | stli_brdpoll(brdp, hdrp); |
2625 | EBRDDISABLE(brdp); | |
4ac4360b | 2626 | spin_unlock(&brd_lock); |
1da177e4 LT |
2627 | } |
2628 | } | |
2629 | ||
2630 | /*****************************************************************************/ | |
2631 | ||
2632 | /* | |
2633 | * Translate the termios settings into the port setting structure of | |
2634 | * the slave. | |
2635 | */ | |
2636 | ||
1f8ec435 | 2637 | static void stli_mkasyport(struct stliport *portp, asyport_t *pp, struct ktermios *tiosp) |
1da177e4 | 2638 | { |
1da177e4 LT |
2639 | memset(pp, 0, sizeof(asyport_t)); |
2640 | ||
2641 | /* | |
2642 | * Start of by setting the baud, char size, parity and stop bit info. | |
2643 | */ | |
1db27c11 | 2644 | pp->baudout = tty_get_baud_rate(portp->tty); |
1da177e4 LT |
2645 | if ((tiosp->c_cflag & CBAUD) == B38400) { |
2646 | if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) | |
2647 | pp->baudout = 57600; | |
2648 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2649 | pp->baudout = 115200; | |
2650 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2651 | pp->baudout = 230400; | |
2652 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2653 | pp->baudout = 460800; | |
2654 | else if ((portp->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST) | |
2655 | pp->baudout = (portp->baud_base / portp->custom_divisor); | |
2656 | } | |
2657 | if (pp->baudout > STL_MAXBAUD) | |
2658 | pp->baudout = STL_MAXBAUD; | |
2659 | pp->baudin = pp->baudout; | |
2660 | ||
2661 | switch (tiosp->c_cflag & CSIZE) { | |
2662 | case CS5: | |
2663 | pp->csize = 5; | |
2664 | break; | |
2665 | case CS6: | |
2666 | pp->csize = 6; | |
2667 | break; | |
2668 | case CS7: | |
2669 | pp->csize = 7; | |
2670 | break; | |
2671 | default: | |
2672 | pp->csize = 8; | |
2673 | break; | |
2674 | } | |
2675 | ||
2676 | if (tiosp->c_cflag & CSTOPB) | |
2677 | pp->stopbs = PT_STOP2; | |
2678 | else | |
2679 | pp->stopbs = PT_STOP1; | |
2680 | ||
2681 | if (tiosp->c_cflag & PARENB) { | |
2682 | if (tiosp->c_cflag & PARODD) | |
2683 | pp->parity = PT_ODDPARITY; | |
2684 | else | |
2685 | pp->parity = PT_EVENPARITY; | |
2686 | } else { | |
2687 | pp->parity = PT_NOPARITY; | |
2688 | } | |
2689 | ||
2690 | /* | |
2691 | * Set up any flow control options enabled. | |
2692 | */ | |
2693 | if (tiosp->c_iflag & IXON) { | |
2694 | pp->flow |= F_IXON; | |
2695 | if (tiosp->c_iflag & IXANY) | |
2696 | pp->flow |= F_IXANY; | |
2697 | } | |
2698 | if (tiosp->c_cflag & CRTSCTS) | |
2699 | pp->flow |= (F_RTSFLOW | F_CTSFLOW); | |
2700 | ||
2701 | pp->startin = tiosp->c_cc[VSTART]; | |
2702 | pp->stopin = tiosp->c_cc[VSTOP]; | |
2703 | pp->startout = tiosp->c_cc[VSTART]; | |
2704 | pp->stopout = tiosp->c_cc[VSTOP]; | |
2705 | ||
2706 | /* | |
2707 | * Set up the RX char marking mask with those RX error types we must | |
2708 | * catch. We can get the slave to help us out a little here, it will | |
2709 | * ignore parity errors and breaks for us, and mark parity errors in | |
2710 | * the data stream. | |
2711 | */ | |
2712 | if (tiosp->c_iflag & IGNPAR) | |
2713 | pp->iflag |= FI_IGNRXERRS; | |
2714 | if (tiosp->c_iflag & IGNBRK) | |
2715 | pp->iflag |= FI_IGNBREAK; | |
2716 | ||
2717 | portp->rxmarkmsk = 0; | |
2718 | if (tiosp->c_iflag & (INPCK | PARMRK)) | |
2719 | pp->iflag |= FI_1MARKRXERRS; | |
2720 | if (tiosp->c_iflag & BRKINT) | |
2721 | portp->rxmarkmsk |= BRKINT; | |
2722 | ||
2723 | /* | |
2724 | * Set up clocal processing as required. | |
2725 | */ | |
2726 | if (tiosp->c_cflag & CLOCAL) | |
2727 | portp->flags &= ~ASYNC_CHECK_CD; | |
2728 | else | |
2729 | portp->flags |= ASYNC_CHECK_CD; | |
2730 | ||
2731 | /* | |
2732 | * Transfer any persistent flags into the asyport structure. | |
2733 | */ | |
2734 | pp->pflag = (portp->pflag & 0xffff); | |
2735 | pp->vmin = (portp->pflag & P_RXIMIN) ? 1 : 0; | |
2736 | pp->vtime = (portp->pflag & P_RXITIME) ? 1 : 0; | |
2737 | pp->cc[1] = (portp->pflag & P_RXTHOLD) ? 1 : 0; | |
2738 | } | |
2739 | ||
2740 | /*****************************************************************************/ | |
2741 | ||
2742 | /* | |
2743 | * Construct a slave signals structure for setting the DTR and RTS | |
2744 | * signals as specified. | |
2745 | */ | |
2746 | ||
2747 | static void stli_mkasysigs(asysigs_t *sp, int dtr, int rts) | |
2748 | { | |
1da177e4 LT |
2749 | memset(sp, 0, sizeof(asysigs_t)); |
2750 | if (dtr >= 0) { | |
2751 | sp->signal |= SG_DTR; | |
2752 | sp->sigvalue |= ((dtr > 0) ? SG_DTR : 0); | |
2753 | } | |
2754 | if (rts >= 0) { | |
2755 | sp->signal |= SG_RTS; | |
2756 | sp->sigvalue |= ((rts > 0) ? SG_RTS : 0); | |
2757 | } | |
2758 | } | |
2759 | ||
2760 | /*****************************************************************************/ | |
2761 | ||
2762 | /* | |
2763 | * Convert the signals returned from the slave into a local TIOCM type | |
2764 | * signals value. We keep them locally in TIOCM format. | |
2765 | */ | |
2766 | ||
2767 | static long stli_mktiocm(unsigned long sigvalue) | |
2768 | { | |
4ac4360b | 2769 | long tiocm = 0; |
1da177e4 LT |
2770 | tiocm |= ((sigvalue & SG_DCD) ? TIOCM_CD : 0); |
2771 | tiocm |= ((sigvalue & SG_CTS) ? TIOCM_CTS : 0); | |
2772 | tiocm |= ((sigvalue & SG_RI) ? TIOCM_RI : 0); | |
2773 | tiocm |= ((sigvalue & SG_DSR) ? TIOCM_DSR : 0); | |
2774 | tiocm |= ((sigvalue & SG_DTR) ? TIOCM_DTR : 0); | |
2775 | tiocm |= ((sigvalue & SG_RTS) ? TIOCM_RTS : 0); | |
2776 | return(tiocm); | |
2777 | } | |
2778 | ||
2779 | /*****************************************************************************/ | |
2780 | ||
2781 | /* | |
2782 | * All panels and ports actually attached have been worked out. All | |
2783 | * we need to do here is set up the appropriate per port data structures. | |
2784 | */ | |
2785 | ||
1f8ec435 | 2786 | static int stli_initports(struct stlibrd *brdp) |
1da177e4 | 2787 | { |
1f8ec435 | 2788 | struct stliport *portp; |
1328d737 | 2789 | unsigned int i, panelnr, panelport; |
1da177e4 | 2790 | |
1da177e4 | 2791 | for (i = 0, panelnr = 0, panelport = 0; (i < brdp->nrports); i++) { |
1f8ec435 | 2792 | portp = kzalloc(sizeof(struct stliport), GFP_KERNEL); |
b0b4ed72 | 2793 | if (!portp) { |
1da177e4 LT |
2794 | printk("STALLION: failed to allocate port structure\n"); |
2795 | continue; | |
2796 | } | |
2797 | ||
1da177e4 LT |
2798 | portp->magic = STLI_PORTMAGIC; |
2799 | portp->portnr = i; | |
2800 | portp->brdnr = brdp->brdnr; | |
2801 | portp->panelnr = panelnr; | |
2802 | portp->baud_base = STL_BAUDBASE; | |
2803 | portp->close_delay = STL_CLOSEDELAY; | |
2804 | portp->closing_wait = 30 * HZ; | |
3e577a80 | 2805 | INIT_WORK(&portp->tqhangup, stli_dohangup); |
1da177e4 LT |
2806 | init_waitqueue_head(&portp->open_wait); |
2807 | init_waitqueue_head(&portp->close_wait); | |
2808 | init_waitqueue_head(&portp->raw_wait); | |
2809 | panelport++; | |
2810 | if (panelport >= brdp->panels[panelnr]) { | |
2811 | panelport = 0; | |
2812 | panelnr++; | |
2813 | } | |
2814 | brdp->ports[i] = portp; | |
2815 | } | |
2816 | ||
4ac4360b | 2817 | return 0; |
1da177e4 LT |
2818 | } |
2819 | ||
2820 | /*****************************************************************************/ | |
2821 | ||
2822 | /* | |
2823 | * All the following routines are board specific hardware operations. | |
2824 | */ | |
2825 | ||
1f8ec435 | 2826 | static void stli_ecpinit(struct stlibrd *brdp) |
1da177e4 LT |
2827 | { |
2828 | unsigned long memconf; | |
2829 | ||
1da177e4 LT |
2830 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2831 | udelay(10); | |
2832 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2833 | udelay(100); | |
2834 | ||
2835 | memconf = (brdp->memaddr & ECP_ATADDRMASK) >> ECP_ATADDRSHFT; | |
2836 | outb(memconf, (brdp->iobase + ECP_ATMEMAR)); | |
2837 | } | |
2838 | ||
2839 | /*****************************************************************************/ | |
2840 | ||
1f8ec435 | 2841 | static void stli_ecpenable(struct stlibrd *brdp) |
1da177e4 | 2842 | { |
1da177e4 LT |
2843 | outb(ECP_ATENABLE, (brdp->iobase + ECP_ATCONFR)); |
2844 | } | |
2845 | ||
2846 | /*****************************************************************************/ | |
2847 | ||
1f8ec435 | 2848 | static void stli_ecpdisable(struct stlibrd *brdp) |
1da177e4 | 2849 | { |
1da177e4 LT |
2850 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); |
2851 | } | |
2852 | ||
2853 | /*****************************************************************************/ | |
2854 | ||
1f8ec435 | 2855 | static void __iomem *stli_ecpgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2856 | { |
29756fa3 | 2857 | void __iomem *ptr; |
4ac4360b | 2858 | unsigned char val; |
1da177e4 LT |
2859 | |
2860 | if (offset > brdp->memsize) { | |
2861 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
2862 | "range at line=%d(%d), brd=%d\n", | |
2863 | (int) offset, line, __LINE__, brdp->brdnr); | |
2864 | ptr = NULL; | |
2865 | val = 0; | |
2866 | } else { | |
2867 | ptr = brdp->membase + (offset % ECP_ATPAGESIZE); | |
2868 | val = (unsigned char) (offset / ECP_ATPAGESIZE); | |
2869 | } | |
2870 | outb(val, (brdp->iobase + ECP_ATMEMPR)); | |
2871 | return(ptr); | |
2872 | } | |
2873 | ||
2874 | /*****************************************************************************/ | |
2875 | ||
1f8ec435 | 2876 | static void stli_ecpreset(struct stlibrd *brdp) |
1da177e4 | 2877 | { |
1da177e4 LT |
2878 | outb(ECP_ATSTOP, (brdp->iobase + ECP_ATCONFR)); |
2879 | udelay(10); | |
2880 | outb(ECP_ATDISABLE, (brdp->iobase + ECP_ATCONFR)); | |
2881 | udelay(500); | |
2882 | } | |
2883 | ||
2884 | /*****************************************************************************/ | |
2885 | ||
1f8ec435 | 2886 | static void stli_ecpintr(struct stlibrd *brdp) |
1da177e4 | 2887 | { |
1da177e4 LT |
2888 | outb(0x1, brdp->iobase); |
2889 | } | |
2890 | ||
2891 | /*****************************************************************************/ | |
2892 | ||
2893 | /* | |
2894 | * The following set of functions act on ECP EISA boards. | |
2895 | */ | |
2896 | ||
1f8ec435 | 2897 | static void stli_ecpeiinit(struct stlibrd *brdp) |
1da177e4 LT |
2898 | { |
2899 | unsigned long memconf; | |
2900 | ||
1da177e4 LT |
2901 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); |
2902 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2903 | udelay(10); | |
2904 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2905 | udelay(500); | |
2906 | ||
2907 | memconf = (brdp->memaddr & ECP_EIADDRMASKL) >> ECP_EIADDRSHFTL; | |
2908 | outb(memconf, (brdp->iobase + ECP_EIMEMARL)); | |
2909 | memconf = (brdp->memaddr & ECP_EIADDRMASKH) >> ECP_EIADDRSHFTH; | |
2910 | outb(memconf, (brdp->iobase + ECP_EIMEMARH)); | |
2911 | } | |
2912 | ||
2913 | /*****************************************************************************/ | |
2914 | ||
1f8ec435 | 2915 | static void stli_ecpeienable(struct stlibrd *brdp) |
1da177e4 LT |
2916 | { |
2917 | outb(ECP_EIENABLE, (brdp->iobase + ECP_EICONFR)); | |
2918 | } | |
2919 | ||
2920 | /*****************************************************************************/ | |
2921 | ||
1f8ec435 | 2922 | static void stli_ecpeidisable(struct stlibrd *brdp) |
1da177e4 LT |
2923 | { |
2924 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2925 | } | |
2926 | ||
2927 | /*****************************************************************************/ | |
2928 | ||
1f8ec435 | 2929 | static void __iomem *stli_ecpeigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2930 | { |
29756fa3 | 2931 | void __iomem *ptr; |
1da177e4 LT |
2932 | unsigned char val; |
2933 | ||
1da177e4 LT |
2934 | if (offset > brdp->memsize) { |
2935 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
2936 | "range at line=%d(%d), brd=%d\n", | |
2937 | (int) offset, line, __LINE__, brdp->brdnr); | |
2938 | ptr = NULL; | |
2939 | val = 0; | |
2940 | } else { | |
2941 | ptr = brdp->membase + (offset % ECP_EIPAGESIZE); | |
2942 | if (offset < ECP_EIPAGESIZE) | |
2943 | val = ECP_EIENABLE; | |
2944 | else | |
2945 | val = ECP_EIENABLE | 0x40; | |
2946 | } | |
2947 | outb(val, (brdp->iobase + ECP_EICONFR)); | |
2948 | return(ptr); | |
2949 | } | |
2950 | ||
2951 | /*****************************************************************************/ | |
2952 | ||
1f8ec435 | 2953 | static void stli_ecpeireset(struct stlibrd *brdp) |
1da177e4 LT |
2954 | { |
2955 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
2956 | udelay(10); | |
2957 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
2958 | udelay(500); | |
2959 | } | |
2960 | ||
2961 | /*****************************************************************************/ | |
2962 | ||
2963 | /* | |
2964 | * The following set of functions act on ECP MCA boards. | |
2965 | */ | |
2966 | ||
1f8ec435 | 2967 | static void stli_ecpmcenable(struct stlibrd *brdp) |
1da177e4 LT |
2968 | { |
2969 | outb(ECP_MCENABLE, (brdp->iobase + ECP_MCCONFR)); | |
2970 | } | |
2971 | ||
2972 | /*****************************************************************************/ | |
2973 | ||
1f8ec435 | 2974 | static void stli_ecpmcdisable(struct stlibrd *brdp) |
1da177e4 LT |
2975 | { |
2976 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
2977 | } | |
2978 | ||
2979 | /*****************************************************************************/ | |
2980 | ||
1f8ec435 | 2981 | static void __iomem *stli_ecpmcgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 2982 | { |
29756fa3 | 2983 | void __iomem *ptr; |
4ac4360b | 2984 | unsigned char val; |
1da177e4 LT |
2985 | |
2986 | if (offset > brdp->memsize) { | |
2987 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
2988 | "range at line=%d(%d), brd=%d\n", | |
2989 | (int) offset, line, __LINE__, brdp->brdnr); | |
2990 | ptr = NULL; | |
2991 | val = 0; | |
2992 | } else { | |
2993 | ptr = brdp->membase + (offset % ECP_MCPAGESIZE); | |
2994 | val = ((unsigned char) (offset / ECP_MCPAGESIZE)) | ECP_MCENABLE; | |
2995 | } | |
2996 | outb(val, (brdp->iobase + ECP_MCCONFR)); | |
2997 | return(ptr); | |
2998 | } | |
2999 | ||
3000 | /*****************************************************************************/ | |
3001 | ||
1f8ec435 | 3002 | static void stli_ecpmcreset(struct stlibrd *brdp) |
1da177e4 LT |
3003 | { |
3004 | outb(ECP_MCSTOP, (brdp->iobase + ECP_MCCONFR)); | |
3005 | udelay(10); | |
3006 | outb(ECP_MCDISABLE, (brdp->iobase + ECP_MCCONFR)); | |
3007 | udelay(500); | |
3008 | } | |
3009 | ||
3010 | /*****************************************************************************/ | |
3011 | ||
3012 | /* | |
3013 | * The following set of functions act on ECP PCI boards. | |
3014 | */ | |
3015 | ||
1f8ec435 | 3016 | static void stli_ecppciinit(struct stlibrd *brdp) |
1da177e4 | 3017 | { |
1da177e4 LT |
3018 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); |
3019 | udelay(10); | |
3020 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
3021 | udelay(500); | |
3022 | } | |
3023 | ||
3024 | /*****************************************************************************/ | |
3025 | ||
1f8ec435 | 3026 | static void __iomem *stli_ecppcigetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3027 | { |
29756fa3 | 3028 | void __iomem *ptr; |
1da177e4 LT |
3029 | unsigned char val; |
3030 | ||
1da177e4 LT |
3031 | if (offset > brdp->memsize) { |
3032 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3033 | "range at line=%d(%d), board=%d\n", | |
3034 | (int) offset, line, __LINE__, brdp->brdnr); | |
3035 | ptr = NULL; | |
3036 | val = 0; | |
3037 | } else { | |
3038 | ptr = brdp->membase + (offset % ECP_PCIPAGESIZE); | |
3039 | val = (offset / ECP_PCIPAGESIZE) << 1; | |
3040 | } | |
3041 | outb(val, (brdp->iobase + ECP_PCICONFR)); | |
3042 | return(ptr); | |
3043 | } | |
3044 | ||
3045 | /*****************************************************************************/ | |
3046 | ||
1f8ec435 | 3047 | static void stli_ecppcireset(struct stlibrd *brdp) |
1da177e4 LT |
3048 | { |
3049 | outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR)); | |
3050 | udelay(10); | |
3051 | outb(0, (brdp->iobase + ECP_PCICONFR)); | |
3052 | udelay(500); | |
3053 | } | |
3054 | ||
3055 | /*****************************************************************************/ | |
3056 | ||
3057 | /* | |
3058 | * The following routines act on ONboards. | |
3059 | */ | |
3060 | ||
1f8ec435 | 3061 | static void stli_onbinit(struct stlibrd *brdp) |
1da177e4 LT |
3062 | { |
3063 | unsigned long memconf; | |
3064 | ||
1da177e4 LT |
3065 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
3066 | udelay(10); | |
3067 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
3068 | mdelay(1000); | |
3069 | ||
3070 | memconf = (brdp->memaddr & ONB_ATADDRMASK) >> ONB_ATADDRSHFT; | |
3071 | outb(memconf, (brdp->iobase + ONB_ATMEMAR)); | |
3072 | outb(0x1, brdp->iobase); | |
3073 | mdelay(1); | |
3074 | } | |
3075 | ||
3076 | /*****************************************************************************/ | |
3077 | ||
1f8ec435 | 3078 | static void stli_onbenable(struct stlibrd *brdp) |
1da177e4 | 3079 | { |
1da177e4 LT |
3080 | outb((brdp->enabval | ONB_ATENABLE), (brdp->iobase + ONB_ATCONFR)); |
3081 | } | |
3082 | ||
3083 | /*****************************************************************************/ | |
3084 | ||
1f8ec435 | 3085 | static void stli_onbdisable(struct stlibrd *brdp) |
1da177e4 | 3086 | { |
1da177e4 LT |
3087 | outb((brdp->enabval | ONB_ATDISABLE), (brdp->iobase + ONB_ATCONFR)); |
3088 | } | |
3089 | ||
3090 | /*****************************************************************************/ | |
3091 | ||
1f8ec435 | 3092 | static void __iomem *stli_onbgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3093 | { |
29756fa3 | 3094 | void __iomem *ptr; |
1da177e4 | 3095 | |
1da177e4 LT |
3096 | if (offset > brdp->memsize) { |
3097 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3098 | "range at line=%d(%d), brd=%d\n", | |
3099 | (int) offset, line, __LINE__, brdp->brdnr); | |
3100 | ptr = NULL; | |
3101 | } else { | |
3102 | ptr = brdp->membase + (offset % ONB_ATPAGESIZE); | |
3103 | } | |
3104 | return(ptr); | |
3105 | } | |
3106 | ||
3107 | /*****************************************************************************/ | |
3108 | ||
1f8ec435 | 3109 | static void stli_onbreset(struct stlibrd *brdp) |
1da177e4 | 3110 | { |
1da177e4 LT |
3111 | outb(ONB_ATSTOP, (brdp->iobase + ONB_ATCONFR)); |
3112 | udelay(10); | |
3113 | outb(ONB_ATDISABLE, (brdp->iobase + ONB_ATCONFR)); | |
3114 | mdelay(1000); | |
3115 | } | |
3116 | ||
3117 | /*****************************************************************************/ | |
3118 | ||
3119 | /* | |
3120 | * The following routines act on ONboard EISA. | |
3121 | */ | |
3122 | ||
1f8ec435 | 3123 | static void stli_onbeinit(struct stlibrd *brdp) |
1da177e4 LT |
3124 | { |
3125 | unsigned long memconf; | |
3126 | ||
1da177e4 LT |
3127 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); |
3128 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3129 | udelay(10); | |
3130 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3131 | mdelay(1000); | |
3132 | ||
3133 | memconf = (brdp->memaddr & ONB_EIADDRMASKL) >> ONB_EIADDRSHFTL; | |
3134 | outb(memconf, (brdp->iobase + ONB_EIMEMARL)); | |
3135 | memconf = (brdp->memaddr & ONB_EIADDRMASKH) >> ONB_EIADDRSHFTH; | |
3136 | outb(memconf, (brdp->iobase + ONB_EIMEMARH)); | |
3137 | outb(0x1, brdp->iobase); | |
3138 | mdelay(1); | |
3139 | } | |
3140 | ||
3141 | /*****************************************************************************/ | |
3142 | ||
1f8ec435 | 3143 | static void stli_onbeenable(struct stlibrd *brdp) |
1da177e4 | 3144 | { |
1da177e4 LT |
3145 | outb(ONB_EIENABLE, (brdp->iobase + ONB_EICONFR)); |
3146 | } | |
3147 | ||
3148 | /*****************************************************************************/ | |
3149 | ||
1f8ec435 | 3150 | static void stli_onbedisable(struct stlibrd *brdp) |
1da177e4 | 3151 | { |
1da177e4 LT |
3152 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); |
3153 | } | |
3154 | ||
3155 | /*****************************************************************************/ | |
3156 | ||
1f8ec435 | 3157 | static void __iomem *stli_onbegetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3158 | { |
29756fa3 | 3159 | void __iomem *ptr; |
4ac4360b | 3160 | unsigned char val; |
1da177e4 LT |
3161 | |
3162 | if (offset > brdp->memsize) { | |
3163 | printk(KERN_ERR "STALLION: shared memory pointer=%x out of " | |
3164 | "range at line=%d(%d), brd=%d\n", | |
3165 | (int) offset, line, __LINE__, brdp->brdnr); | |
3166 | ptr = NULL; | |
3167 | val = 0; | |
3168 | } else { | |
3169 | ptr = brdp->membase + (offset % ONB_EIPAGESIZE); | |
3170 | if (offset < ONB_EIPAGESIZE) | |
3171 | val = ONB_EIENABLE; | |
3172 | else | |
3173 | val = ONB_EIENABLE | 0x40; | |
3174 | } | |
3175 | outb(val, (brdp->iobase + ONB_EICONFR)); | |
3176 | return(ptr); | |
3177 | } | |
3178 | ||
3179 | /*****************************************************************************/ | |
3180 | ||
1f8ec435 | 3181 | static void stli_onbereset(struct stlibrd *brdp) |
1da177e4 | 3182 | { |
1da177e4 LT |
3183 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); |
3184 | udelay(10); | |
3185 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3186 | mdelay(1000); | |
3187 | } | |
3188 | ||
3189 | /*****************************************************************************/ | |
3190 | ||
3191 | /* | |
3192 | * The following routines act on Brumby boards. | |
3193 | */ | |
3194 | ||
1f8ec435 | 3195 | static void stli_bbyinit(struct stlibrd *brdp) |
1da177e4 | 3196 | { |
1da177e4 LT |
3197 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3198 | udelay(10); | |
3199 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3200 | mdelay(1000); | |
3201 | outb(0x1, brdp->iobase); | |
3202 | mdelay(1); | |
3203 | } | |
3204 | ||
3205 | /*****************************************************************************/ | |
3206 | ||
1f8ec435 | 3207 | static void __iomem *stli_bbygetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3208 | { |
29756fa3 | 3209 | void __iomem *ptr; |
4ac4360b | 3210 | unsigned char val; |
1da177e4 | 3211 | |
4ac4360b | 3212 | BUG_ON(offset > brdp->memsize); |
1da177e4 | 3213 | |
4ac4360b AC |
3214 | ptr = brdp->membase + (offset % BBY_PAGESIZE); |
3215 | val = (unsigned char) (offset / BBY_PAGESIZE); | |
1da177e4 LT |
3216 | outb(val, (brdp->iobase + BBY_ATCONFR)); |
3217 | return(ptr); | |
3218 | } | |
3219 | ||
3220 | /*****************************************************************************/ | |
3221 | ||
1f8ec435 | 3222 | static void stli_bbyreset(struct stlibrd *brdp) |
1da177e4 | 3223 | { |
1da177e4 LT |
3224 | outb(BBY_ATSTOP, (brdp->iobase + BBY_ATCONFR)); |
3225 | udelay(10); | |
3226 | outb(0, (brdp->iobase + BBY_ATCONFR)); | |
3227 | mdelay(1000); | |
3228 | } | |
3229 | ||
3230 | /*****************************************************************************/ | |
3231 | ||
3232 | /* | |
3233 | * The following routines act on original old Stallion boards. | |
3234 | */ | |
3235 | ||
1f8ec435 | 3236 | static void stli_stalinit(struct stlibrd *brdp) |
1da177e4 | 3237 | { |
1da177e4 LT |
3238 | outb(0x1, brdp->iobase); |
3239 | mdelay(1000); | |
3240 | } | |
3241 | ||
3242 | /*****************************************************************************/ | |
3243 | ||
1f8ec435 | 3244 | static void __iomem *stli_stalgetmemptr(struct stlibrd *brdp, unsigned long offset, int line) |
1da177e4 | 3245 | { |
4ac4360b AC |
3246 | BUG_ON(offset > brdp->memsize); |
3247 | return brdp->membase + (offset % STAL_PAGESIZE); | |
1da177e4 LT |
3248 | } |
3249 | ||
3250 | /*****************************************************************************/ | |
3251 | ||
1f8ec435 | 3252 | static void stli_stalreset(struct stlibrd *brdp) |
1da177e4 | 3253 | { |
4ac4360b | 3254 | u32 __iomem *vecp; |
1da177e4 | 3255 | |
4ac4360b AC |
3256 | vecp = (u32 __iomem *) (brdp->membase + 0x30); |
3257 | writel(0xffff0000, vecp); | |
1da177e4 LT |
3258 | outb(0, brdp->iobase); |
3259 | mdelay(1000); | |
3260 | } | |
3261 | ||
3262 | /*****************************************************************************/ | |
3263 | ||
3264 | /* | |
3265 | * Try to find an ECP board and initialize it. This handles only ECP | |
3266 | * board types. | |
3267 | */ | |
3268 | ||
1f8ec435 | 3269 | static int stli_initecp(struct stlibrd *brdp) |
1da177e4 | 3270 | { |
4ac4360b AC |
3271 | cdkecpsig_t sig; |
3272 | cdkecpsig_t __iomem *sigsp; | |
3273 | unsigned int status, nxtid; | |
3274 | char *name; | |
3275 | int panelnr, nrports; | |
1da177e4 LT |
3276 | |
3277 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) | |
3278 | return -EIO; | |
3279 | ||
3280 | if ((brdp->iobase == 0) || (brdp->memaddr == 0)) | |
3281 | { | |
3282 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3283 | return -ENODEV; |
1da177e4 LT |
3284 | } |
3285 | ||
3286 | brdp->iosize = ECP_IOSIZE; | |
3287 | ||
3288 | /* | |
3289 | * Based on the specific board type setup the common vars to access | |
3290 | * and enable shared memory. Set all board specific information now | |
3291 | * as well. | |
3292 | */ | |
3293 | switch (brdp->brdtype) { | |
3294 | case BRD_ECP: | |
1da177e4 LT |
3295 | brdp->memsize = ECP_MEMSIZE; |
3296 | brdp->pagesize = ECP_ATPAGESIZE; | |
3297 | brdp->init = stli_ecpinit; | |
3298 | brdp->enable = stli_ecpenable; | |
3299 | brdp->reenable = stli_ecpenable; | |
3300 | brdp->disable = stli_ecpdisable; | |
3301 | brdp->getmemptr = stli_ecpgetmemptr; | |
3302 | brdp->intr = stli_ecpintr; | |
3303 | brdp->reset = stli_ecpreset; | |
3304 | name = "serial(EC8/64)"; | |
3305 | break; | |
3306 | ||
3307 | case BRD_ECPE: | |
1da177e4 LT |
3308 | brdp->memsize = ECP_MEMSIZE; |
3309 | brdp->pagesize = ECP_EIPAGESIZE; | |
3310 | brdp->init = stli_ecpeiinit; | |
3311 | brdp->enable = stli_ecpeienable; | |
3312 | brdp->reenable = stli_ecpeienable; | |
3313 | brdp->disable = stli_ecpeidisable; | |
3314 | brdp->getmemptr = stli_ecpeigetmemptr; | |
3315 | brdp->intr = stli_ecpintr; | |
3316 | brdp->reset = stli_ecpeireset; | |
3317 | name = "serial(EC8/64-EI)"; | |
3318 | break; | |
3319 | ||
3320 | case BRD_ECPMC: | |
1da177e4 LT |
3321 | brdp->memsize = ECP_MEMSIZE; |
3322 | brdp->pagesize = ECP_MCPAGESIZE; | |
3323 | brdp->init = NULL; | |
3324 | brdp->enable = stli_ecpmcenable; | |
3325 | brdp->reenable = stli_ecpmcenable; | |
3326 | brdp->disable = stli_ecpmcdisable; | |
3327 | brdp->getmemptr = stli_ecpmcgetmemptr; | |
3328 | brdp->intr = stli_ecpintr; | |
3329 | brdp->reset = stli_ecpmcreset; | |
3330 | name = "serial(EC8/64-MCA)"; | |
3331 | break; | |
3332 | ||
3333 | case BRD_ECPPCI: | |
1da177e4 LT |
3334 | brdp->memsize = ECP_PCIMEMSIZE; |
3335 | brdp->pagesize = ECP_PCIPAGESIZE; | |
3336 | brdp->init = stli_ecppciinit; | |
3337 | brdp->enable = NULL; | |
3338 | brdp->reenable = NULL; | |
3339 | brdp->disable = NULL; | |
3340 | brdp->getmemptr = stli_ecppcigetmemptr; | |
3341 | brdp->intr = stli_ecpintr; | |
3342 | brdp->reset = stli_ecppcireset; | |
3343 | name = "serial(EC/RA-PCI)"; | |
3344 | break; | |
3345 | ||
3346 | default: | |
3347 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3348 | return -EINVAL; |
1da177e4 LT |
3349 | } |
3350 | ||
3351 | /* | |
3352 | * The per-board operations structure is all set up, so now let's go | |
3353 | * and get the board operational. Firstly initialize board configuration | |
3354 | * registers. Set the memory mapping info so we can get at the boards | |
3355 | * shared memory. | |
3356 | */ | |
3357 | EBRDINIT(brdp); | |
3358 | ||
3359 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
4ac4360b | 3360 | if (brdp->membase == NULL) |
1da177e4 LT |
3361 | { |
3362 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3363 | return -ENOMEM; |
1da177e4 LT |
3364 | } |
3365 | ||
3366 | /* | |
3367 | * Now that all specific code is set up, enable the shared memory and | |
3368 | * look for the a signature area that will tell us exactly what board | |
3369 | * this is, and what it is connected to it. | |
3370 | */ | |
3371 | EBRDENABLE(brdp); | |
4ac4360b | 3372 | sigsp = (cdkecpsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
634965f5 | 3373 | memcpy_fromio(&sig, sigsp, sizeof(cdkecpsig_t)); |
1da177e4 LT |
3374 | EBRDDISABLE(brdp); |
3375 | ||
4ac4360b | 3376 | if (sig.magic != cpu_to_le32(ECP_MAGIC)) |
1da177e4 LT |
3377 | { |
3378 | release_region(brdp->iobase, brdp->iosize); | |
aa8a8d66 AL |
3379 | iounmap(brdp->membase); |
3380 | brdp->membase = NULL; | |
4ac4360b | 3381 | return -ENODEV; |
1da177e4 LT |
3382 | } |
3383 | ||
3384 | /* | |
3385 | * Scan through the signature looking at the panels connected to the | |
3386 | * board. Calculate the total number of ports as we go. | |
3387 | */ | |
3388 | for (panelnr = 0, nxtid = 0; (panelnr < STL_MAXPANELS); panelnr++) { | |
3389 | status = sig.panelid[nxtid]; | |
3390 | if ((status & ECH_PNLIDMASK) != nxtid) | |
3391 | break; | |
3392 | ||
3393 | brdp->panelids[panelnr] = status; | |
3394 | nrports = (status & ECH_PNL16PORT) ? 16 : 8; | |
3395 | if ((nrports == 16) && ((status & ECH_PNLXPID) == 0)) | |
3396 | nxtid++; | |
3397 | brdp->panels[panelnr] = nrports; | |
3398 | brdp->nrports += nrports; | |
3399 | nxtid++; | |
3400 | brdp->nrpanels++; | |
3401 | } | |
3402 | ||
3403 | ||
3404 | brdp->state |= BST_FOUND; | |
4ac4360b | 3405 | return 0; |
1da177e4 LT |
3406 | } |
3407 | ||
3408 | /*****************************************************************************/ | |
3409 | ||
3410 | /* | |
3411 | * Try to find an ONboard, Brumby or Stallion board and initialize it. | |
3412 | * This handles only these board types. | |
3413 | */ | |
3414 | ||
1f8ec435 | 3415 | static int stli_initonb(struct stlibrd *brdp) |
1da177e4 | 3416 | { |
4ac4360b AC |
3417 | cdkonbsig_t sig; |
3418 | cdkonbsig_t __iomem *sigsp; | |
3419 | char *name; | |
3420 | int i; | |
1da177e4 LT |
3421 | |
3422 | /* | |
3423 | * Do a basic sanity check on the IO and memory addresses. | |
3424 | */ | |
4ac4360b AC |
3425 | if (brdp->iobase == 0 || brdp->memaddr == 0) |
3426 | return -ENODEV; | |
1da177e4 LT |
3427 | |
3428 | brdp->iosize = ONB_IOSIZE; | |
3429 | ||
3430 | if (!request_region(brdp->iobase, brdp->iosize, "istallion")) | |
3431 | return -EIO; | |
3432 | ||
3433 | /* | |
3434 | * Based on the specific board type setup the common vars to access | |
3435 | * and enable shared memory. Set all board specific information now | |
3436 | * as well. | |
3437 | */ | |
3438 | switch (brdp->brdtype) { | |
3439 | case BRD_ONBOARD: | |
1da177e4 | 3440 | case BRD_ONBOARD2: |
1da177e4 LT |
3441 | brdp->memsize = ONB_MEMSIZE; |
3442 | brdp->pagesize = ONB_ATPAGESIZE; | |
3443 | brdp->init = stli_onbinit; | |
3444 | brdp->enable = stli_onbenable; | |
3445 | brdp->reenable = stli_onbenable; | |
3446 | brdp->disable = stli_onbdisable; | |
3447 | brdp->getmemptr = stli_onbgetmemptr; | |
3448 | brdp->intr = stli_ecpintr; | |
3449 | brdp->reset = stli_onbreset; | |
3450 | if (brdp->memaddr > 0x100000) | |
3451 | brdp->enabval = ONB_MEMENABHI; | |
3452 | else | |
3453 | brdp->enabval = ONB_MEMENABLO; | |
3454 | name = "serial(ONBoard)"; | |
3455 | break; | |
3456 | ||
3457 | case BRD_ONBOARDE: | |
1da177e4 LT |
3458 | brdp->memsize = ONB_EIMEMSIZE; |
3459 | brdp->pagesize = ONB_EIPAGESIZE; | |
3460 | brdp->init = stli_onbeinit; | |
3461 | brdp->enable = stli_onbeenable; | |
3462 | brdp->reenable = stli_onbeenable; | |
3463 | brdp->disable = stli_onbedisable; | |
3464 | brdp->getmemptr = stli_onbegetmemptr; | |
3465 | brdp->intr = stli_ecpintr; | |
3466 | brdp->reset = stli_onbereset; | |
3467 | name = "serial(ONBoard/E)"; | |
3468 | break; | |
3469 | ||
3470 | case BRD_BRUMBY4: | |
1da177e4 LT |
3471 | brdp->memsize = BBY_MEMSIZE; |
3472 | brdp->pagesize = BBY_PAGESIZE; | |
3473 | brdp->init = stli_bbyinit; | |
3474 | brdp->enable = NULL; | |
3475 | brdp->reenable = NULL; | |
3476 | brdp->disable = NULL; | |
3477 | brdp->getmemptr = stli_bbygetmemptr; | |
3478 | brdp->intr = stli_ecpintr; | |
3479 | brdp->reset = stli_bbyreset; | |
3480 | name = "serial(Brumby)"; | |
3481 | break; | |
3482 | ||
3483 | case BRD_STALLION: | |
1da177e4 LT |
3484 | brdp->memsize = STAL_MEMSIZE; |
3485 | brdp->pagesize = STAL_PAGESIZE; | |
3486 | brdp->init = stli_stalinit; | |
3487 | brdp->enable = NULL; | |
3488 | brdp->reenable = NULL; | |
3489 | brdp->disable = NULL; | |
3490 | brdp->getmemptr = stli_stalgetmemptr; | |
3491 | brdp->intr = stli_ecpintr; | |
3492 | brdp->reset = stli_stalreset; | |
3493 | name = "serial(Stallion)"; | |
3494 | break; | |
3495 | ||
3496 | default: | |
3497 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3498 | return -EINVAL; |
1da177e4 LT |
3499 | } |
3500 | ||
3501 | /* | |
3502 | * The per-board operations structure is all set up, so now let's go | |
3503 | * and get the board operational. Firstly initialize board configuration | |
3504 | * registers. Set the memory mapping info so we can get at the boards | |
3505 | * shared memory. | |
3506 | */ | |
3507 | EBRDINIT(brdp); | |
3508 | ||
3509 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); | |
4ac4360b | 3510 | if (brdp->membase == NULL) |
1da177e4 LT |
3511 | { |
3512 | release_region(brdp->iobase, brdp->iosize); | |
4ac4360b | 3513 | return -ENOMEM; |
1da177e4 LT |
3514 | } |
3515 | ||
3516 | /* | |
3517 | * Now that all specific code is set up, enable the shared memory and | |
3518 | * look for the a signature area that will tell us exactly what board | |
3519 | * this is, and how many ports. | |
3520 | */ | |
3521 | EBRDENABLE(brdp); | |
4ac4360b AC |
3522 | sigsp = (cdkonbsig_t __iomem *) EBRDGETMEMPTR(brdp, CDK_SIGADDR); |
3523 | memcpy_fromio(&sig, sigsp, sizeof(cdkonbsig_t)); | |
1da177e4 LT |
3524 | EBRDDISABLE(brdp); |
3525 | ||
4ac4360b AC |
3526 | if (sig.magic0 != cpu_to_le16(ONB_MAGIC0) || |
3527 | sig.magic1 != cpu_to_le16(ONB_MAGIC1) || | |
3528 | sig.magic2 != cpu_to_le16(ONB_MAGIC2) || | |
3529 | sig.magic3 != cpu_to_le16(ONB_MAGIC3)) | |
1da177e4 LT |
3530 | { |
3531 | release_region(brdp->iobase, brdp->iosize); | |
aa8a8d66 AL |
3532 | iounmap(brdp->membase); |
3533 | brdp->membase = NULL; | |
4ac4360b | 3534 | return -ENODEV; |
1da177e4 LT |
3535 | } |
3536 | ||
3537 | /* | |
3538 | * Scan through the signature alive mask and calculate how many ports | |
3539 | * there are on this board. | |
3540 | */ | |
3541 | brdp->nrpanels = 1; | |
3542 | if (sig.amask1) { | |
3543 | brdp->nrports = 32; | |
3544 | } else { | |
3545 | for (i = 0; (i < 16); i++) { | |
3546 | if (((sig.amask0 << i) & 0x8000) == 0) | |
3547 | break; | |
3548 | } | |
3549 | brdp->nrports = i; | |
3550 | } | |
3551 | brdp->panels[0] = brdp->nrports; | |
3552 | ||
3553 | ||
3554 | brdp->state |= BST_FOUND; | |
4ac4360b | 3555 | return 0; |
1da177e4 LT |
3556 | } |
3557 | ||
3558 | /*****************************************************************************/ | |
3559 | ||
3560 | /* | |
3561 | * Start up a running board. This routine is only called after the | |
3562 | * code has been down loaded to the board and is operational. It will | |
3563 | * read in the memory map, and get the show on the road... | |
3564 | */ | |
3565 | ||
1f8ec435 | 3566 | static int stli_startbrd(struct stlibrd *brdp) |
1da177e4 | 3567 | { |
4ac4360b AC |
3568 | cdkhdr_t __iomem *hdrp; |
3569 | cdkmem_t __iomem *memp; | |
3570 | cdkasy_t __iomem *ap; | |
3571 | unsigned long flags; | |
1328d737 | 3572 | unsigned int portnr, nrdevs, i; |
1f8ec435 | 3573 | struct stliport *portp; |
1328d737 | 3574 | int rc = 0; |
4ac4360b AC |
3575 | u32 memoff; |
3576 | ||
3577 | spin_lock_irqsave(&brd_lock, flags); | |
1da177e4 | 3578 | EBRDENABLE(brdp); |
4ac4360b | 3579 | hdrp = (cdkhdr_t __iomem *) EBRDGETMEMPTR(brdp, CDK_CDKADDR); |
1da177e4 LT |
3580 | nrdevs = hdrp->nrdevs; |
3581 | ||
3582 | #if 0 | |
3583 | printk("%s(%d): CDK version %d.%d.%d --> " | |
3584 | "nrdevs=%d memp=%x hostp=%x slavep=%x\n", | |
4ac4360b AC |
3585 | __FILE__, __LINE__, readb(&hdrp->ver_release), readb(&hdrp->ver_modification), |
3586 | readb(&hdrp->ver_fix), nrdevs, (int) readl(&hdrp->memp), readl(&hdrp->hostp), | |
3587 | readl(&hdrp->slavep)); | |
1da177e4 LT |
3588 | #endif |
3589 | ||
3590 | if (nrdevs < (brdp->nrports + 1)) { | |
3591 | printk(KERN_ERR "STALLION: slave failed to allocate memory for " | |
3592 | "all devices, devices=%d\n", nrdevs); | |
3593 | brdp->nrports = nrdevs - 1; | |
3594 | } | |
3595 | brdp->nrdevs = nrdevs; | |
3596 | brdp->hostoffset = hdrp->hostp - CDK_CDKADDR; | |
3597 | brdp->slaveoffset = hdrp->slavep - CDK_CDKADDR; | |
3598 | brdp->bitsize = (nrdevs + 7) / 8; | |
4ac4360b AC |
3599 | memoff = readl(&hdrp->memp); |
3600 | if (memoff > brdp->memsize) { | |
1da177e4 LT |
3601 | printk(KERN_ERR "STALLION: corrupted shared memory region?\n"); |
3602 | rc = -EIO; | |
3603 | goto stli_donestartup; | |
3604 | } | |
4ac4360b AC |
3605 | memp = (cdkmem_t __iomem *) EBRDGETMEMPTR(brdp, memoff); |
3606 | if (readw(&memp->dtype) != TYP_ASYNCTRL) { | |
1da177e4 LT |
3607 | printk(KERN_ERR "STALLION: no slave control device found\n"); |
3608 | goto stli_donestartup; | |
3609 | } | |
3610 | memp++; | |
3611 | ||
3612 | /* | |
3613 | * Cycle through memory allocation of each port. We are guaranteed to | |
3614 | * have all ports inside the first page of slave window, so no need to | |
3615 | * change pages while reading memory map. | |
3616 | */ | |
3617 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++, memp++) { | |
4ac4360b | 3618 | if (readw(&memp->dtype) != TYP_ASYNC) |
1da177e4 LT |
3619 | break; |
3620 | portp = brdp->ports[portnr]; | |
4ac4360b | 3621 | if (portp == NULL) |
1da177e4 LT |
3622 | break; |
3623 | portp->devnr = i; | |
4ac4360b | 3624 | portp->addr = readl(&memp->offset); |
1da177e4 LT |
3625 | portp->reqbit = (unsigned char) (0x1 << (i * 8 / nrdevs)); |
3626 | portp->portidx = (unsigned char) (i / 8); | |
3627 | portp->portbit = (unsigned char) (0x1 << (i % 8)); | |
3628 | } | |
3629 | ||
4ac4360b | 3630 | writeb(0xff, &hdrp->slavereq); |
1da177e4 LT |
3631 | |
3632 | /* | |
3633 | * For each port setup a local copy of the RX and TX buffer offsets | |
3634 | * and sizes. We do this separate from the above, because we need to | |
3635 | * move the shared memory page... | |
3636 | */ | |
3637 | for (i = 1, portnr = 0; (i < nrdevs); i++, portnr++) { | |
3638 | portp = brdp->ports[portnr]; | |
4ac4360b | 3639 | if (portp == NULL) |
1da177e4 LT |
3640 | break; |
3641 | if (portp->addr == 0) | |
3642 | break; | |
4ac4360b AC |
3643 | ap = (cdkasy_t __iomem *) EBRDGETMEMPTR(brdp, portp->addr); |
3644 | if (ap != NULL) { | |
3645 | portp->rxsize = readw(&ap->rxq.size); | |
3646 | portp->txsize = readw(&ap->txq.size); | |
3647 | portp->rxoffset = readl(&ap->rxq.offset); | |
3648 | portp->txoffset = readl(&ap->txq.offset); | |
1da177e4 LT |
3649 | } |
3650 | } | |
3651 | ||
3652 | stli_donestartup: | |
3653 | EBRDDISABLE(brdp); | |
4ac4360b | 3654 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
3655 | |
3656 | if (rc == 0) | |
3657 | brdp->state |= BST_STARTED; | |
3658 | ||
3659 | if (! stli_timeron) { | |
3660 | stli_timeron++; | |
3661 | stli_timerlist.expires = STLI_TIMEOUT; | |
3662 | add_timer(&stli_timerlist); | |
3663 | } | |
3664 | ||
4ac4360b | 3665 | return rc; |
1da177e4 LT |
3666 | } |
3667 | ||
3668 | /*****************************************************************************/ | |
3669 | ||
3670 | /* | |
3671 | * Probe and initialize the specified board. | |
3672 | */ | |
3673 | ||
1f8ec435 | 3674 | static int __devinit stli_brdinit(struct stlibrd *brdp) |
1da177e4 | 3675 | { |
1da177e4 LT |
3676 | stli_brds[brdp->brdnr] = brdp; |
3677 | ||
3678 | switch (brdp->brdtype) { | |
3679 | case BRD_ECP: | |
3680 | case BRD_ECPE: | |
3681 | case BRD_ECPMC: | |
3682 | case BRD_ECPPCI: | |
3683 | stli_initecp(brdp); | |
3684 | break; | |
3685 | case BRD_ONBOARD: | |
3686 | case BRD_ONBOARDE: | |
3687 | case BRD_ONBOARD2: | |
1da177e4 | 3688 | case BRD_BRUMBY4: |
1da177e4 LT |
3689 | case BRD_STALLION: |
3690 | stli_initonb(brdp); | |
3691 | break; | |
1da177e4 LT |
3692 | default: |
3693 | printk(KERN_ERR "STALLION: board=%d is unknown board " | |
3694 | "type=%d\n", brdp->brdnr, brdp->brdtype); | |
4ac4360b | 3695 | return -ENODEV; |
1da177e4 LT |
3696 | } |
3697 | ||
3698 | if ((brdp->state & BST_FOUND) == 0) { | |
3699 | printk(KERN_ERR "STALLION: %s board not found, board=%d " | |
3700 | "io=%x mem=%x\n", | |
3701 | stli_brdnames[brdp->brdtype], brdp->brdnr, | |
3702 | brdp->iobase, (int) brdp->memaddr); | |
4ac4360b | 3703 | return -ENODEV; |
1da177e4 LT |
3704 | } |
3705 | ||
3706 | stli_initports(brdp); | |
3707 | printk(KERN_INFO "STALLION: %s found, board=%d io=%x mem=%x " | |
3708 | "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype], | |
3709 | brdp->brdnr, brdp->iobase, (int) brdp->memaddr, | |
3710 | brdp->nrpanels, brdp->nrports); | |
4ac4360b | 3711 | return 0; |
1da177e4 LT |
3712 | } |
3713 | ||
3714 | /*****************************************************************************/ | |
3715 | ||
3716 | /* | |
3717 | * Probe around trying to find where the EISA boards shared memory | |
3718 | * might be. This is a bit if hack, but it is the best we can do. | |
3719 | */ | |
3720 | ||
1f8ec435 | 3721 | static int stli_eisamemprobe(struct stlibrd *brdp) |
1da177e4 | 3722 | { |
4ac4360b AC |
3723 | cdkecpsig_t ecpsig, __iomem *ecpsigp; |
3724 | cdkonbsig_t onbsig, __iomem *onbsigp; | |
1da177e4 LT |
3725 | int i, foundit; |
3726 | ||
1da177e4 LT |
3727 | /* |
3728 | * First up we reset the board, to get it into a known state. There | |
3729 | * is only 2 board types here we need to worry about. Don;t use the | |
3730 | * standard board init routine here, it programs up the shared | |
3731 | * memory address, and we don't know it yet... | |
3732 | */ | |
3733 | if (brdp->brdtype == BRD_ECPE) { | |
3734 | outb(0x1, (brdp->iobase + ECP_EIBRDENAB)); | |
3735 | outb(ECP_EISTOP, (brdp->iobase + ECP_EICONFR)); | |
3736 | udelay(10); | |
3737 | outb(ECP_EIDISABLE, (brdp->iobase + ECP_EICONFR)); | |
3738 | udelay(500); | |
3739 | stli_ecpeienable(brdp); | |
3740 | } else if (brdp->brdtype == BRD_ONBOARDE) { | |
3741 | outb(0x1, (brdp->iobase + ONB_EIBRDENAB)); | |
3742 | outb(ONB_EISTOP, (brdp->iobase + ONB_EICONFR)); | |
3743 | udelay(10); | |
3744 | outb(ONB_EIDISABLE, (brdp->iobase + ONB_EICONFR)); | |
3745 | mdelay(100); | |
3746 | outb(0x1, brdp->iobase); | |
3747 | mdelay(1); | |
3748 | stli_onbeenable(brdp); | |
3749 | } else { | |
4ac4360b | 3750 | return -ENODEV; |
1da177e4 LT |
3751 | } |
3752 | ||
3753 | foundit = 0; | |
3754 | brdp->memsize = ECP_MEMSIZE; | |
3755 | ||
3756 | /* | |
3757 | * Board shared memory is enabled, so now we have a poke around and | |
3758 | * see if we can find it. | |
3759 | */ | |
3760 | for (i = 0; (i < stli_eisamempsize); i++) { | |
3761 | brdp->memaddr = stli_eisamemprobeaddrs[i]; | |
1da177e4 | 3762 | brdp->membase = ioremap(brdp->memaddr, brdp->memsize); |
4ac4360b | 3763 | if (brdp->membase == NULL) |
1da177e4 LT |
3764 | continue; |
3765 | ||
3766 | if (brdp->brdtype == BRD_ECPE) { | |
29756fa3 | 3767 | ecpsigp = stli_ecpeigetmemptr(brdp, |
1da177e4 | 3768 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3769 | memcpy_fromio(&ecpsig, ecpsigp, sizeof(cdkecpsig_t)); |
3770 | if (ecpsig.magic == cpu_to_le32(ECP_MAGIC)) | |
1da177e4 LT |
3771 | foundit = 1; |
3772 | } else { | |
4ac4360b | 3773 | onbsigp = (cdkonbsig_t __iomem *) stli_onbegetmemptr(brdp, |
1da177e4 | 3774 | CDK_SIGADDR, __LINE__); |
4ac4360b AC |
3775 | memcpy_fromio(&onbsig, onbsigp, sizeof(cdkonbsig_t)); |
3776 | if ((onbsig.magic0 == cpu_to_le16(ONB_MAGIC0)) && | |
3777 | (onbsig.magic1 == cpu_to_le16(ONB_MAGIC1)) && | |
3778 | (onbsig.magic2 == cpu_to_le16(ONB_MAGIC2)) && | |
3779 | (onbsig.magic3 == cpu_to_le16(ONB_MAGIC3))) | |
1da177e4 LT |
3780 | foundit = 1; |
3781 | } | |
3782 | ||
3783 | iounmap(brdp->membase); | |
3784 | if (foundit) | |
3785 | break; | |
3786 | } | |
3787 | ||
3788 | /* | |
3789 | * Regardless of whether we found the shared memory or not we must | |
3790 | * disable the region. After that return success or failure. | |
3791 | */ | |
3792 | if (brdp->brdtype == BRD_ECPE) | |
3793 | stli_ecpeidisable(brdp); | |
3794 | else | |
3795 | stli_onbedisable(brdp); | |
3796 | ||
3797 | if (! foundit) { | |
3798 | brdp->memaddr = 0; | |
3799 | brdp->membase = NULL; | |
3800 | printk(KERN_ERR "STALLION: failed to probe shared memory " | |
3801 | "region for %s in EISA slot=%d\n", | |
3802 | stli_brdnames[brdp->brdtype], (brdp->iobase >> 12)); | |
4ac4360b | 3803 | return -ENODEV; |
1da177e4 | 3804 | } |
4ac4360b | 3805 | return 0; |
1da177e4 LT |
3806 | } |
3807 | ||
3808 | static int stli_getbrdnr(void) | |
3809 | { | |
1328d737 | 3810 | unsigned int i; |
1da177e4 LT |
3811 | |
3812 | for (i = 0; i < STL_MAXBRDS; i++) { | |
3813 | if (!stli_brds[i]) { | |
3814 | if (i >= stli_nrbrds) | |
3815 | stli_nrbrds = i + 1; | |
3816 | return i; | |
3817 | } | |
3818 | } | |
3819 | return -1; | |
3820 | } | |
3821 | ||
3822 | /*****************************************************************************/ | |
3823 | ||
3824 | /* | |
3825 | * Probe around and try to find any EISA boards in system. The biggest | |
3826 | * problem here is finding out what memory address is associated with | |
3827 | * an EISA board after it is found. The registers of the ECPE and | |
3828 | * ONboardE are not readable - so we can't read them from there. We | |
3829 | * don't have access to the EISA CMOS (or EISA BIOS) so we don't | |
3830 | * actually have any way to find out the real value. The best we can | |
3831 | * do is go probing around in the usual places hoping we can find it. | |
3832 | */ | |
3833 | ||
3834 | static int stli_findeisabrds(void) | |
3835 | { | |
1f8ec435 | 3836 | struct stlibrd *brdp; |
1328d737 JS |
3837 | unsigned int iobase, eid, i; |
3838 | int brdnr; | |
1da177e4 LT |
3839 | |
3840 | /* | |
4ac4360b | 3841 | * Firstly check if this is an EISA system. If this is not an EISA system then |
1da177e4 LT |
3842 | * don't bother going any further! |
3843 | */ | |
4ac4360b AC |
3844 | if (EISA_bus) |
3845 | return 0; | |
1da177e4 LT |
3846 | |
3847 | /* | |
3848 | * Looks like an EISA system, so go searching for EISA boards. | |
3849 | */ | |
3850 | for (iobase = 0x1000; (iobase <= 0xc000); iobase += 0x1000) { | |
3851 | outb(0xff, (iobase + 0xc80)); | |
3852 | eid = inb(iobase + 0xc80); | |
3853 | eid |= inb(iobase + 0xc81) << 8; | |
3854 | if (eid != STL_EISAID) | |
3855 | continue; | |
3856 | ||
3857 | /* | |
3858 | * We have found a board. Need to check if this board was | |
3859 | * statically configured already (just in case!). | |
3860 | */ | |
3861 | for (i = 0; (i < STL_MAXBRDS); i++) { | |
3862 | brdp = stli_brds[i]; | |
4ac4360b | 3863 | if (brdp == NULL) |
1da177e4 LT |
3864 | continue; |
3865 | if (brdp->iobase == iobase) | |
3866 | break; | |
3867 | } | |
3868 | if (i < STL_MAXBRDS) | |
3869 | continue; | |
3870 | ||
3871 | /* | |
3872 | * We have found a Stallion board and it is not configured already. | |
3873 | * Allocate a board structure and initialize it. | |
3874 | */ | |
4ac4360b AC |
3875 | if ((brdp = stli_allocbrd()) == NULL) |
3876 | return -ENOMEM; | |
1328d737 JS |
3877 | brdnr = stli_getbrdnr(); |
3878 | if (brdnr < 0) | |
4ac4360b | 3879 | return -ENOMEM; |
1328d737 | 3880 | brdp->brdnr = (unsigned int)brdnr; |
1da177e4 LT |
3881 | eid = inb(iobase + 0xc82); |
3882 | if (eid == ECP_EISAID) | |
3883 | brdp->brdtype = BRD_ECPE; | |
3884 | else if (eid == ONB_EISAID) | |
3885 | brdp->brdtype = BRD_ONBOARDE; | |
3886 | else | |
3887 | brdp->brdtype = BRD_UNKNOWN; | |
3888 | brdp->iobase = iobase; | |
3889 | outb(0x1, (iobase + 0xc84)); | |
3890 | if (stli_eisamemprobe(brdp)) | |
3891 | outb(0, (iobase + 0xc84)); | |
3892 | stli_brdinit(brdp); | |
3893 | } | |
3894 | ||
4ac4360b | 3895 | return 0; |
1da177e4 LT |
3896 | } |
3897 | ||
3898 | /*****************************************************************************/ | |
3899 | ||
3900 | /* | |
3901 | * Find the next available board number that is free. | |
3902 | */ | |
3903 | ||
3904 | /*****************************************************************************/ | |
3905 | ||
1da177e4 LT |
3906 | /* |
3907 | * We have a Stallion board. Allocate a board structure and | |
3908 | * initialize it. Read its IO and MEMORY resources from PCI | |
3909 | * configuration space. | |
3910 | */ | |
3911 | ||
845bead4 JS |
3912 | static int __devinit stli_pciprobe(struct pci_dev *pdev, |
3913 | const struct pci_device_id *ent) | |
1da177e4 | 3914 | { |
1f8ec435 | 3915 | struct stlibrd *brdp; |
1328d737 | 3916 | int brdnr, retval = -EIO; |
845bead4 JS |
3917 | |
3918 | retval = pci_enable_device(pdev); | |
3919 | if (retval) | |
3920 | goto err; | |
3921 | brdp = stli_allocbrd(); | |
3922 | if (brdp == NULL) { | |
3923 | retval = -ENOMEM; | |
3924 | goto err; | |
3925 | } | |
1328d737 JS |
3926 | brdnr = stli_getbrdnr(); |
3927 | if (brdnr < 0) { /* TODO: locking */ | |
1da177e4 LT |
3928 | printk(KERN_INFO "STALLION: too many boards found, " |
3929 | "maximum supported %d\n", STL_MAXBRDS); | |
845bead4 JS |
3930 | retval = -EIO; |
3931 | goto err_fr; | |
1da177e4 | 3932 | } |
1328d737 | 3933 | brdp->brdnr = (unsigned int)brdnr; |
845bead4 | 3934 | brdp->brdtype = BRD_ECPPCI; |
1da177e4 LT |
3935 | /* |
3936 | * We have all resources from the board, so lets setup the actual | |
3937 | * board structure now. | |
3938 | */ | |
845bead4 JS |
3939 | brdp->iobase = pci_resource_start(pdev, 3); |
3940 | brdp->memaddr = pci_resource_start(pdev, 2); | |
3941 | retval = stli_brdinit(brdp); | |
3942 | if (retval) | |
3943 | goto err_fr; | |
3944 | ||
3945 | pci_set_drvdata(pdev, brdp); | |
1da177e4 | 3946 | |
4ac4360b | 3947 | return 0; |
845bead4 JS |
3948 | err_fr: |
3949 | kfree(brdp); | |
3950 | err: | |
3951 | return retval; | |
1da177e4 LT |
3952 | } |
3953 | ||
845bead4 JS |
3954 | static void stli_pciremove(struct pci_dev *pdev) |
3955 | { | |
1f8ec435 | 3956 | struct stlibrd *brdp = pci_get_drvdata(pdev); |
1da177e4 | 3957 | |
845bead4 | 3958 | stli_cleanup_ports(brdp); |
1da177e4 | 3959 | |
845bead4 JS |
3960 | iounmap(brdp->membase); |
3961 | if (brdp->iosize > 0) | |
3962 | release_region(brdp->iobase, brdp->iosize); | |
1da177e4 | 3963 | |
845bead4 JS |
3964 | stli_brds[brdp->brdnr] = NULL; |
3965 | kfree(brdp); | |
1da177e4 LT |
3966 | } |
3967 | ||
845bead4 JS |
3968 | static struct pci_driver stli_pcidriver = { |
3969 | .name = "istallion", | |
3970 | .id_table = istallion_pci_tbl, | |
3971 | .probe = stli_pciprobe, | |
3972 | .remove = __devexit_p(stli_pciremove) | |
3973 | }; | |
1da177e4 LT |
3974 | /*****************************************************************************/ |
3975 | ||
3976 | /* | |
3977 | * Allocate a new board structure. Fill out the basic info in it. | |
3978 | */ | |
3979 | ||
1f8ec435 | 3980 | static struct stlibrd *stli_allocbrd(void) |
1da177e4 | 3981 | { |
1f8ec435 | 3982 | struct stlibrd *brdp; |
1da177e4 | 3983 | |
1f8ec435 | 3984 | brdp = kzalloc(sizeof(struct stlibrd), GFP_KERNEL); |
b0b4ed72 | 3985 | if (!brdp) { |
1da177e4 | 3986 | printk(KERN_ERR "STALLION: failed to allocate memory " |
1f8ec435 | 3987 | "(size=%Zd)\n", sizeof(struct stlibrd)); |
b0b4ed72 | 3988 | return NULL; |
1da177e4 | 3989 | } |
1da177e4 | 3990 | brdp->magic = STLI_BOARDMAGIC; |
4ac4360b | 3991 | return brdp; |
1da177e4 LT |
3992 | } |
3993 | ||
3994 | /*****************************************************************************/ | |
3995 | ||
3996 | /* | |
3997 | * Scan through all the boards in the configuration and see what we | |
3998 | * can find. | |
3999 | */ | |
4000 | ||
4001 | static int stli_initbrds(void) | |
4002 | { | |
1f8ec435 JS |
4003 | struct stlibrd *brdp, *nxtbrdp; |
4004 | struct stlconf conf; | |
1328d737 JS |
4005 | unsigned int i, j; |
4006 | int retval; | |
1da177e4 | 4007 | |
a3f8d9d5 JS |
4008 | for (stli_nrbrds = 0; stli_nrbrds < ARRAY_SIZE(stli_brdsp); |
4009 | stli_nrbrds++) { | |
4010 | memset(&conf, 0, sizeof(conf)); | |
4011 | if (stli_parsebrd(&conf, stli_brdsp[stli_nrbrds]) == 0) | |
4012 | continue; | |
4ac4360b | 4013 | if ((brdp = stli_allocbrd()) == NULL) |
a3f8d9d5 JS |
4014 | continue; |
4015 | brdp->brdnr = stli_nrbrds; | |
4016 | brdp->brdtype = conf.brdtype; | |
4017 | brdp->iobase = conf.ioaddr1; | |
4018 | brdp->memaddr = conf.memaddr; | |
1da177e4 LT |
4019 | stli_brdinit(brdp); |
4020 | } | |
4021 | ||
dbc6b5f5 | 4022 | if (STLI_EISAPROBE) |
1da177e4 | 4023 | stli_findeisabrds(); |
845bead4 JS |
4024 | |
4025 | retval = pci_register_driver(&stli_pcidriver); | |
4026 | /* TODO: check retval and do something */ | |
1da177e4 LT |
4027 | |
4028 | /* | |
4029 | * All found boards are initialized. Now for a little optimization, if | |
4030 | * no boards are sharing the "shared memory" regions then we can just | |
4031 | * leave them all enabled. This is in fact the usual case. | |
4032 | */ | |
4033 | stli_shared = 0; | |
4034 | if (stli_nrbrds > 1) { | |
4035 | for (i = 0; (i < stli_nrbrds); i++) { | |
4036 | brdp = stli_brds[i]; | |
4ac4360b | 4037 | if (brdp == NULL) |
1da177e4 LT |
4038 | continue; |
4039 | for (j = i + 1; (j < stli_nrbrds); j++) { | |
4040 | nxtbrdp = stli_brds[j]; | |
4ac4360b | 4041 | if (nxtbrdp == NULL) |
1da177e4 LT |
4042 | continue; |
4043 | if ((brdp->membase >= nxtbrdp->membase) && | |
4044 | (brdp->membase <= (nxtbrdp->membase + | |
4045 | nxtbrdp->memsize - 1))) { | |
4046 | stli_shared++; | |
4047 | break; | |
4048 | } | |
4049 | } | |
4050 | } | |
4051 | } | |
4052 | ||
4053 | if (stli_shared == 0) { | |
4054 | for (i = 0; (i < stli_nrbrds); i++) { | |
4055 | brdp = stli_brds[i]; | |
4ac4360b | 4056 | if (brdp == NULL) |
1da177e4 LT |
4057 | continue; |
4058 | if (brdp->state & BST_FOUND) { | |
4059 | EBRDENABLE(brdp); | |
4060 | brdp->enable = NULL; | |
4061 | brdp->disable = NULL; | |
4062 | } | |
4063 | } | |
4064 | } | |
4065 | ||
4ac4360b | 4066 | return 0; |
1da177e4 LT |
4067 | } |
4068 | ||
4069 | /*****************************************************************************/ | |
4070 | ||
4071 | /* | |
4072 | * Code to handle an "staliomem" read operation. This device is the | |
4073 | * contents of the board shared memory. It is used for down loading | |
4074 | * the slave image (and debugging :-) | |
4075 | */ | |
4076 | ||
4077 | static ssize_t stli_memread(struct file *fp, char __user *buf, size_t count, loff_t *offp) | |
4078 | { | |
4ac4360b | 4079 | unsigned long flags; |
29756fa3 | 4080 | void __iomem *memptr; |
1f8ec435 | 4081 | struct stlibrd *brdp; |
1328d737 JS |
4082 | unsigned int brdnr; |
4083 | int size, n; | |
4ac4360b AC |
4084 | void *p; |
4085 | loff_t off = *offp; | |
1da177e4 | 4086 | |
a7113a96 | 4087 | brdnr = iminor(fp->f_path.dentry->d_inode); |
1da177e4 | 4088 | if (brdnr >= stli_nrbrds) |
4ac4360b | 4089 | return -ENODEV; |
1da177e4 | 4090 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4091 | if (brdp == NULL) |
4092 | return -ENODEV; | |
1da177e4 | 4093 | if (brdp->state == 0) |
4ac4360b AC |
4094 | return -ENODEV; |
4095 | if (off >= brdp->memsize || off + count < off) | |
4096 | return 0; | |
1da177e4 | 4097 | |
a3f8d9d5 | 4098 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
4099 | |
4100 | /* | |
4101 | * Copy the data a page at a time | |
4102 | */ | |
4103 | ||
4104 | p = (void *)__get_free_page(GFP_KERNEL); | |
4105 | if(p == NULL) | |
4106 | return -ENOMEM; | |
1da177e4 | 4107 | |
1da177e4 | 4108 | while (size > 0) { |
4ac4360b AC |
4109 | spin_lock_irqsave(&brd_lock, flags); |
4110 | EBRDENABLE(brdp); | |
29756fa3 | 4111 | memptr = EBRDGETMEMPTR(brdp, off); |
a3f8d9d5 JS |
4112 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
4113 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
4114 | memcpy_fromio(p, memptr, n); |
4115 | EBRDDISABLE(brdp); | |
4116 | spin_unlock_irqrestore(&brd_lock, flags); | |
4117 | if (copy_to_user(buf, p, n)) { | |
1da177e4 LT |
4118 | count = -EFAULT; |
4119 | goto out; | |
4120 | } | |
4ac4360b | 4121 | off += n; |
1da177e4 LT |
4122 | buf += n; |
4123 | size -= n; | |
4124 | } | |
4125 | out: | |
4ac4360b AC |
4126 | *offp = off; |
4127 | free_page((unsigned long)p); | |
4128 | return count; | |
1da177e4 LT |
4129 | } |
4130 | ||
4131 | /*****************************************************************************/ | |
4132 | ||
4133 | /* | |
4134 | * Code to handle an "staliomem" write operation. This device is the | |
4135 | * contents of the board shared memory. It is used for down loading | |
4136 | * the slave image (and debugging :-) | |
4ac4360b AC |
4137 | * |
4138 | * FIXME: copy under lock | |
1da177e4 LT |
4139 | */ |
4140 | ||
4141 | static ssize_t stli_memwrite(struct file *fp, const char __user *buf, size_t count, loff_t *offp) | |
4142 | { | |
4ac4360b | 4143 | unsigned long flags; |
29756fa3 | 4144 | void __iomem *memptr; |
1f8ec435 | 4145 | struct stlibrd *brdp; |
4ac4360b | 4146 | char __user *chbuf; |
1328d737 JS |
4147 | unsigned int brdnr; |
4148 | int size, n; | |
4ac4360b AC |
4149 | void *p; |
4150 | loff_t off = *offp; | |
1da177e4 | 4151 | |
a7113a96 | 4152 | brdnr = iminor(fp->f_path.dentry->d_inode); |
4ac4360b | 4153 | |
1da177e4 | 4154 | if (brdnr >= stli_nrbrds) |
4ac4360b | 4155 | return -ENODEV; |
1da177e4 | 4156 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4157 | if (brdp == NULL) |
4158 | return -ENODEV; | |
1da177e4 | 4159 | if (brdp->state == 0) |
4ac4360b AC |
4160 | return -ENODEV; |
4161 | if (off >= brdp->memsize || off + count < off) | |
4162 | return 0; | |
1da177e4 LT |
4163 | |
4164 | chbuf = (char __user *) buf; | |
a3f8d9d5 | 4165 | size = min(count, (size_t)(brdp->memsize - off)); |
4ac4360b AC |
4166 | |
4167 | /* | |
4168 | * Copy the data a page at a time | |
4169 | */ | |
4170 | ||
4171 | p = (void *)__get_free_page(GFP_KERNEL); | |
4172 | if(p == NULL) | |
4173 | return -ENOMEM; | |
1da177e4 | 4174 | |
1da177e4 | 4175 | while (size > 0) { |
a3f8d9d5 JS |
4176 | n = min(size, (int)(brdp->pagesize - (((unsigned long) off) % brdp->pagesize))); |
4177 | n = min(n, (int)PAGE_SIZE); | |
4ac4360b AC |
4178 | if (copy_from_user(p, chbuf, n)) { |
4179 | if (count == 0) | |
4180 | count = -EFAULT; | |
1da177e4 LT |
4181 | goto out; |
4182 | } | |
4ac4360b AC |
4183 | spin_lock_irqsave(&brd_lock, flags); |
4184 | EBRDENABLE(brdp); | |
29756fa3 | 4185 | memptr = EBRDGETMEMPTR(brdp, off); |
4ac4360b AC |
4186 | memcpy_toio(memptr, p, n); |
4187 | EBRDDISABLE(brdp); | |
4188 | spin_unlock_irqrestore(&brd_lock, flags); | |
4189 | off += n; | |
1da177e4 LT |
4190 | chbuf += n; |
4191 | size -= n; | |
4192 | } | |
4193 | out: | |
4ac4360b AC |
4194 | free_page((unsigned long) p); |
4195 | *offp = off; | |
4196 | return count; | |
1da177e4 LT |
4197 | } |
4198 | ||
4199 | /*****************************************************************************/ | |
4200 | ||
4201 | /* | |
4202 | * Return the board stats structure to user app. | |
4203 | */ | |
4204 | ||
4205 | static int stli_getbrdstats(combrd_t __user *bp) | |
4206 | { | |
1f8ec435 | 4207 | struct stlibrd *brdp; |
1328d737 | 4208 | unsigned int i; |
1da177e4 LT |
4209 | |
4210 | if (copy_from_user(&stli_brdstats, bp, sizeof(combrd_t))) | |
4211 | return -EFAULT; | |
4212 | if (stli_brdstats.brd >= STL_MAXBRDS) | |
4ac4360b | 4213 | return -ENODEV; |
1da177e4 | 4214 | brdp = stli_brds[stli_brdstats.brd]; |
4ac4360b AC |
4215 | if (brdp == NULL) |
4216 | return -ENODEV; | |
1da177e4 LT |
4217 | |
4218 | memset(&stli_brdstats, 0, sizeof(combrd_t)); | |
4219 | stli_brdstats.brd = brdp->brdnr; | |
4220 | stli_brdstats.type = brdp->brdtype; | |
4221 | stli_brdstats.hwid = 0; | |
4222 | stli_brdstats.state = brdp->state; | |
4223 | stli_brdstats.ioaddr = brdp->iobase; | |
4224 | stli_brdstats.memaddr = brdp->memaddr; | |
4225 | stli_brdstats.nrpanels = brdp->nrpanels; | |
4226 | stli_brdstats.nrports = brdp->nrports; | |
4227 | for (i = 0; (i < brdp->nrpanels); i++) { | |
4228 | stli_brdstats.panels[i].panel = i; | |
4229 | stli_brdstats.panels[i].hwid = brdp->panelids[i]; | |
4230 | stli_brdstats.panels[i].nrports = brdp->panels[i]; | |
4231 | } | |
4232 | ||
4233 | if (copy_to_user(bp, &stli_brdstats, sizeof(combrd_t))) | |
4234 | return -EFAULT; | |
4ac4360b | 4235 | return 0; |
1da177e4 LT |
4236 | } |
4237 | ||
4238 | /*****************************************************************************/ | |
4239 | ||
4240 | /* | |
4241 | * Resolve the referenced port number into a port struct pointer. | |
4242 | */ | |
4243 | ||
1328d737 JS |
4244 | static struct stliport *stli_getport(unsigned int brdnr, unsigned int panelnr, |
4245 | unsigned int portnr) | |
1da177e4 | 4246 | { |
1f8ec435 | 4247 | struct stlibrd *brdp; |
1328d737 | 4248 | unsigned int i; |
1da177e4 | 4249 | |
1328d737 | 4250 | if (brdnr >= STL_MAXBRDS) |
4ac4360b | 4251 | return NULL; |
1da177e4 | 4252 | brdp = stli_brds[brdnr]; |
4ac4360b AC |
4253 | if (brdp == NULL) |
4254 | return NULL; | |
1da177e4 LT |
4255 | for (i = 0; (i < panelnr); i++) |
4256 | portnr += brdp->panels[i]; | |
1328d737 | 4257 | if (portnr >= brdp->nrports) |
4ac4360b AC |
4258 | return NULL; |
4259 | return brdp->ports[portnr]; | |
1da177e4 LT |
4260 | } |
4261 | ||
4262 | /*****************************************************************************/ | |
4263 | ||
4264 | /* | |
4265 | * Return the port stats structure to user app. A NULL port struct | |
4266 | * pointer passed in means that we need to find out from the app | |
4267 | * what port to get stats for (used through board control device). | |
4268 | */ | |
4269 | ||
1f8ec435 | 4270 | static int stli_portcmdstats(struct stliport *portp) |
1da177e4 LT |
4271 | { |
4272 | unsigned long flags; | |
1f8ec435 | 4273 | struct stlibrd *brdp; |
1da177e4 LT |
4274 | int rc; |
4275 | ||
4276 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4277 | ||
4ac4360b AC |
4278 | if (portp == NULL) |
4279 | return -ENODEV; | |
1da177e4 | 4280 | brdp = stli_brds[portp->brdnr]; |
4ac4360b AC |
4281 | if (brdp == NULL) |
4282 | return -ENODEV; | |
1da177e4 LT |
4283 | |
4284 | if (brdp->state & BST_STARTED) { | |
4285 | if ((rc = stli_cmdwait(brdp, portp, A_GETSTATS, | |
4286 | &stli_cdkstats, sizeof(asystats_t), 1)) < 0) | |
4ac4360b | 4287 | return rc; |
1da177e4 LT |
4288 | } else { |
4289 | memset(&stli_cdkstats, 0, sizeof(asystats_t)); | |
4290 | } | |
4291 | ||
4292 | stli_comstats.brd = portp->brdnr; | |
4293 | stli_comstats.panel = portp->panelnr; | |
4294 | stli_comstats.port = portp->portnr; | |
4295 | stli_comstats.state = portp->state; | |
4296 | stli_comstats.flags = portp->flags; | |
4297 | ||
4ac4360b AC |
4298 | spin_lock_irqsave(&brd_lock, flags); |
4299 | if (portp->tty != NULL) { | |
1da177e4 LT |
4300 | if (portp->tty->driver_data == portp) { |
4301 | stli_comstats.ttystate = portp->tty->flags; | |
4ac4360b AC |
4302 | stli_comstats.rxbuffered = -1; |
4303 | if (portp->tty->termios != NULL) { | |
1da177e4 LT |
4304 | stli_comstats.cflags = portp->tty->termios->c_cflag; |
4305 | stli_comstats.iflags = portp->tty->termios->c_iflag; | |
4306 | stli_comstats.oflags = portp->tty->termios->c_oflag; | |
4307 | stli_comstats.lflags = portp->tty->termios->c_lflag; | |
4308 | } | |
4309 | } | |
4310 | } | |
4ac4360b | 4311 | spin_unlock_irqrestore(&brd_lock, flags); |
1da177e4 LT |
4312 | |
4313 | stli_comstats.txtotal = stli_cdkstats.txchars; | |
4314 | stli_comstats.rxtotal = stli_cdkstats.rxchars + stli_cdkstats.ringover; | |
4315 | stli_comstats.txbuffered = stli_cdkstats.txringq; | |
4316 | stli_comstats.rxbuffered += stli_cdkstats.rxringq; | |
4317 | stli_comstats.rxoverrun = stli_cdkstats.overruns; | |
4318 | stli_comstats.rxparity = stli_cdkstats.parity; | |
4319 | stli_comstats.rxframing = stli_cdkstats.framing; | |
4320 | stli_comstats.rxlost = stli_cdkstats.ringover; | |
4321 | stli_comstats.rxbreaks = stli_cdkstats.rxbreaks; | |
4322 | stli_comstats.txbreaks = stli_cdkstats.txbreaks; | |
4323 | stli_comstats.txxon = stli_cdkstats.txstart; | |
4324 | stli_comstats.txxoff = stli_cdkstats.txstop; | |
4325 | stli_comstats.rxxon = stli_cdkstats.rxstart; | |
4326 | stli_comstats.rxxoff = stli_cdkstats.rxstop; | |
4327 | stli_comstats.rxrtsoff = stli_cdkstats.rtscnt / 2; | |
4328 | stli_comstats.rxrtson = stli_cdkstats.rtscnt - stli_comstats.rxrtsoff; | |
4329 | stli_comstats.modem = stli_cdkstats.dcdcnt; | |
4330 | stli_comstats.hwid = stli_cdkstats.hwid; | |
4331 | stli_comstats.signals = stli_mktiocm(stli_cdkstats.signals); | |
4332 | ||
4ac4360b | 4333 | return 0; |
1da177e4 LT |
4334 | } |
4335 | ||
4336 | /*****************************************************************************/ | |
4337 | ||
4338 | /* | |
4339 | * Return the port stats structure to user app. A NULL port struct | |
4340 | * pointer passed in means that we need to find out from the app | |
4341 | * what port to get stats for (used through board control device). | |
4342 | */ | |
4343 | ||
1f8ec435 | 4344 | static int stli_getportstats(struct stliport *portp, comstats_t __user *cp) |
1da177e4 | 4345 | { |
1f8ec435 | 4346 | struct stlibrd *brdp; |
4ac4360b | 4347 | int rc; |
1da177e4 LT |
4348 | |
4349 | if (!portp) { | |
4350 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4351 | return -EFAULT; | |
4352 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4353 | stli_comstats.port); | |
4354 | if (!portp) | |
4355 | return -ENODEV; | |
4356 | } | |
4357 | ||
4358 | brdp = stli_brds[portp->brdnr]; | |
4359 | if (!brdp) | |
4360 | return -ENODEV; | |
4361 | ||
4362 | if ((rc = stli_portcmdstats(portp)) < 0) | |
4363 | return rc; | |
4364 | ||
4365 | return copy_to_user(cp, &stli_comstats, sizeof(comstats_t)) ? | |
4366 | -EFAULT : 0; | |
4367 | } | |
4368 | ||
4369 | /*****************************************************************************/ | |
4370 | ||
4371 | /* | |
4372 | * Clear the port stats structure. We also return it zeroed out... | |
4373 | */ | |
4374 | ||
1f8ec435 | 4375 | static int stli_clrportstats(struct stliport *portp, comstats_t __user *cp) |
1da177e4 | 4376 | { |
1f8ec435 | 4377 | struct stlibrd *brdp; |
4ac4360b | 4378 | int rc; |
1da177e4 LT |
4379 | |
4380 | if (!portp) { | |
4381 | if (copy_from_user(&stli_comstats, cp, sizeof(comstats_t))) | |
4382 | return -EFAULT; | |
4383 | portp = stli_getport(stli_comstats.brd, stli_comstats.panel, | |
4384 | stli_comstats.port); | |
4385 | if (!portp) | |
4386 | return -ENODEV; | |
4387 | } | |
4388 | ||
4389 | brdp = stli_brds[portp->brdnr]; | |
4390 | if (!brdp) | |
4391 | return -ENODEV; | |
4392 | ||
4393 | if (brdp->state & BST_STARTED) { | |
4394 | if ((rc = stli_cmdwait(brdp, portp, A_CLEARSTATS, NULL, 0, 0)) < 0) | |
4395 | return rc; | |
4396 | } | |
4397 | ||
4398 | memset(&stli_comstats, 0, sizeof(comstats_t)); | |
4399 | stli_comstats.brd = portp->brdnr; | |
4400 | stli_comstats.panel = portp->panelnr; | |
4401 | stli_comstats.port = portp->portnr; | |
4402 | ||
4403 | if (copy_to_user(cp, &stli_comstats, sizeof(comstats_t))) | |
4404 | return -EFAULT; | |
4405 | return 0; | |
4406 | } | |
4407 | ||
4408 | /*****************************************************************************/ | |
4409 | ||
4410 | /* | |
4411 | * Return the entire driver ports structure to a user app. | |
4412 | */ | |
4413 | ||
1f8ec435 | 4414 | static int stli_getportstruct(struct stliport __user *arg) |
1da177e4 | 4415 | { |
1328d737 | 4416 | struct stliport stli_dummyport; |
1f8ec435 | 4417 | struct stliport *portp; |
1da177e4 | 4418 | |
1f8ec435 | 4419 | if (copy_from_user(&stli_dummyport, arg, sizeof(struct stliport))) |
1da177e4 LT |
4420 | return -EFAULT; |
4421 | portp = stli_getport(stli_dummyport.brdnr, stli_dummyport.panelnr, | |
4422 | stli_dummyport.portnr); | |
4423 | if (!portp) | |
4424 | return -ENODEV; | |
1f8ec435 | 4425 | if (copy_to_user(arg, portp, sizeof(struct stliport))) |
1da177e4 LT |
4426 | return -EFAULT; |
4427 | return 0; | |
4428 | } | |
4429 | ||
4430 | /*****************************************************************************/ | |
4431 | ||
4432 | /* | |
4433 | * Return the entire driver board structure to a user app. | |
4434 | */ | |
4435 | ||
1f8ec435 | 4436 | static int stli_getbrdstruct(struct stlibrd __user *arg) |
1da177e4 | 4437 | { |
1328d737 | 4438 | struct stlibrd stli_dummybrd; |
1f8ec435 | 4439 | struct stlibrd *brdp; |
1da177e4 | 4440 | |
1f8ec435 | 4441 | if (copy_from_user(&stli_dummybrd, arg, sizeof(struct stlibrd))) |
1da177e4 | 4442 | return -EFAULT; |
1328d737 | 4443 | if (stli_dummybrd.brdnr >= STL_MAXBRDS) |
1da177e4 LT |
4444 | return -ENODEV; |
4445 | brdp = stli_brds[stli_dummybrd.brdnr]; | |
4446 | if (!brdp) | |
4447 | return -ENODEV; | |
1f8ec435 | 4448 | if (copy_to_user(arg, brdp, sizeof(struct stlibrd))) |
1da177e4 LT |
4449 | return -EFAULT; |
4450 | return 0; | |
4451 | } | |
4452 | ||
4453 | /*****************************************************************************/ | |
4454 | ||
4455 | /* | |
4456 | * The "staliomem" device is also required to do some special operations on | |
4457 | * the board. We need to be able to send an interrupt to the board, | |
4458 | * reset it, and start/stop it. | |
4459 | */ | |
4460 | ||
4461 | static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, unsigned long arg) | |
4462 | { | |
1f8ec435 | 4463 | struct stlibrd *brdp; |
4ac4360b | 4464 | int brdnr, rc, done; |
1da177e4 LT |
4465 | void __user *argp = (void __user *)arg; |
4466 | ||
1da177e4 LT |
4467 | /* |
4468 | * First up handle the board independent ioctls. | |
4469 | */ | |
4470 | done = 0; | |
4471 | rc = 0; | |
4472 | ||
4473 | switch (cmd) { | |
4474 | case COM_GETPORTSTATS: | |
4475 | rc = stli_getportstats(NULL, argp); | |
4476 | done++; | |
4477 | break; | |
4478 | case COM_CLRPORTSTATS: | |
4479 | rc = stli_clrportstats(NULL, argp); | |
4480 | done++; | |
4481 | break; | |
4482 | case COM_GETBRDSTATS: | |
4483 | rc = stli_getbrdstats(argp); | |
4484 | done++; | |
4485 | break; | |
4486 | case COM_READPORT: | |
4487 | rc = stli_getportstruct(argp); | |
4488 | done++; | |
4489 | break; | |
4490 | case COM_READBOARD: | |
4491 | rc = stli_getbrdstruct(argp); | |
4492 | done++; | |
4493 | break; | |
4494 | } | |
4495 | ||
4496 | if (done) | |
4ac4360b | 4497 | return rc; |
1da177e4 LT |
4498 | |
4499 | /* | |
4500 | * Now handle the board specific ioctls. These all depend on the | |
4501 | * minor number of the device they were called from. | |
4502 | */ | |
4503 | brdnr = iminor(ip); | |
4504 | if (brdnr >= STL_MAXBRDS) | |
4ac4360b | 4505 | return -ENODEV; |
1da177e4 LT |
4506 | brdp = stli_brds[brdnr]; |
4507 | if (!brdp) | |
4ac4360b | 4508 | return -ENODEV; |
1da177e4 | 4509 | if (brdp->state == 0) |
4ac4360b | 4510 | return -ENODEV; |
1da177e4 LT |
4511 | |
4512 | switch (cmd) { | |
4513 | case STL_BINTR: | |
4514 | EBRDINTR(brdp); | |
4515 | break; | |
4516 | case STL_BSTART: | |
4517 | rc = stli_startbrd(brdp); | |
4518 | break; | |
4519 | case STL_BSTOP: | |
4520 | brdp->state &= ~BST_STARTED; | |
4521 | break; | |
4522 | case STL_BRESET: | |
4523 | brdp->state &= ~BST_STARTED; | |
4524 | EBRDRESET(brdp); | |
4525 | if (stli_shared == 0) { | |
4526 | if (brdp->reenable != NULL) | |
4527 | (* brdp->reenable)(brdp); | |
4528 | } | |
4529 | break; | |
4530 | default: | |
4531 | rc = -ENOIOCTLCMD; | |
4532 | break; | |
4533 | } | |
4ac4360b | 4534 | return rc; |
1da177e4 LT |
4535 | } |
4536 | ||
b68e31d0 | 4537 | static const struct tty_operations stli_ops = { |
1da177e4 LT |
4538 | .open = stli_open, |
4539 | .close = stli_close, | |
4540 | .write = stli_write, | |
4541 | .put_char = stli_putchar, | |
4542 | .flush_chars = stli_flushchars, | |
4543 | .write_room = stli_writeroom, | |
4544 | .chars_in_buffer = stli_charsinbuffer, | |
4545 | .ioctl = stli_ioctl, | |
4546 | .set_termios = stli_settermios, | |
4547 | .throttle = stli_throttle, | |
4548 | .unthrottle = stli_unthrottle, | |
4549 | .stop = stli_stop, | |
4550 | .start = stli_start, | |
4551 | .hangup = stli_hangup, | |
4552 | .flush_buffer = stli_flushbuffer, | |
4553 | .break_ctl = stli_breakctl, | |
4554 | .wait_until_sent = stli_waituntilsent, | |
4555 | .send_xchar = stli_sendxchar, | |
4556 | .read_proc = stli_readproc, | |
4557 | .tiocmget = stli_tiocmget, | |
4558 | .tiocmset = stli_tiocmset, | |
4559 | }; | |
4560 | ||
4561 | /*****************************************************************************/ | |
4562 | ||
672b2714 | 4563 | static int __init stli_init(void) |
1da177e4 LT |
4564 | { |
4565 | int i; | |
4566 | printk(KERN_INFO "%s: version %s\n", stli_drvtitle, stli_drvversion); | |
4567 | ||
4ac4360b AC |
4568 | spin_lock_init(&stli_lock); |
4569 | spin_lock_init(&brd_lock); | |
4570 | ||
1da177e4 LT |
4571 | stli_initbrds(); |
4572 | ||
4573 | stli_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS); | |
4574 | if (!stli_serial) | |
4575 | return -ENOMEM; | |
4576 | ||
4577 | /* | |
4578 | * Allocate a temporary write buffer. | |
4579 | */ | |
b0b4ed72 TK |
4580 | stli_txcookbuf = kmalloc(STLI_TXBUFSIZE, GFP_KERNEL); |
4581 | if (!stli_txcookbuf) | |
1da177e4 LT |
4582 | printk(KERN_ERR "STALLION: failed to allocate memory " |
4583 | "(size=%d)\n", STLI_TXBUFSIZE); | |
4584 | ||
4585 | /* | |
4586 | * Set up a character driver for the shared memory region. We need this | |
4587 | * to down load the slave code image. Also it is a useful debugging tool. | |
4588 | */ | |
4589 | if (register_chrdev(STL_SIOMEMMAJOR, "staliomem", &stli_fsiomem)) | |
4590 | printk(KERN_ERR "STALLION: failed to register serial memory " | |
4591 | "device\n"); | |
4592 | ||
ca8eca68 | 4593 | istallion_class = class_create(THIS_MODULE, "staliomem"); |
7c69ef79 | 4594 | for (i = 0; i < 4; i++) |
53f46542 GKH |
4595 | class_device_create(istallion_class, NULL, |
4596 | MKDEV(STL_SIOMEMMAJOR, i), | |
1da177e4 | 4597 | NULL, "staliomem%d", i); |
1da177e4 LT |
4598 | |
4599 | /* | |
4600 | * Set up the tty driver structure and register us as a driver. | |
4601 | */ | |
4602 | stli_serial->owner = THIS_MODULE; | |
4603 | stli_serial->driver_name = stli_drvname; | |
4604 | stli_serial->name = stli_serialname; | |
4605 | stli_serial->major = STL_SERIALMAJOR; | |
4606 | stli_serial->minor_start = 0; | |
4607 | stli_serial->type = TTY_DRIVER_TYPE_SERIAL; | |
4608 | stli_serial->subtype = SERIAL_TYPE_NORMAL; | |
4609 | stli_serial->init_termios = stli_deftermios; | |
4610 | stli_serial->flags = TTY_DRIVER_REAL_RAW; | |
4611 | tty_set_operations(stli_serial, &stli_ops); | |
4612 | ||
4613 | if (tty_register_driver(stli_serial)) { | |
4614 | put_tty_driver(stli_serial); | |
4615 | printk(KERN_ERR "STALLION: failed to register serial driver\n"); | |
4616 | return -EBUSY; | |
4617 | } | |
4ac4360b | 4618 | return 0; |
1da177e4 LT |
4619 | } |
4620 | ||
4621 | /*****************************************************************************/ |