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1 | /* libusb/ppdev connector for XILINX impact | |
2 | * | |
3 | * Copyright (c) 2007 Michael Gernoth <michael@gernoth.net> | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
6 | * of this software and associated documentation files (the "Software"), to | |
7 | * deal in the Software without restriction, including without limitation the | |
8 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | |
9 | * sell copies of the Software, and to permit persons to whom the Software is | |
10 | * furnished to do so, subject to the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice shall be included in | |
13 | * all copies or substantial portions of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | #define _GNU_SOURCE 1 | |
25 | ||
26 | #include <dlfcn.h> | |
27 | #include <stdarg.h> | |
28 | #include <stdlib.h> | |
29 | #include <string.h> | |
30 | #include <unistd.h> | |
31 | #include <fcntl.h> | |
32 | #include <sys/types.h> | |
33 | #include <sys/stat.h> | |
34 | #include <sys/time.h> | |
35 | #include <stdio.h> | |
36 | #include <signal.h> | |
37 | #include <errno.h> | |
38 | #include <inttypes.h> | |
39 | #include <sys/ioctl.h> | |
40 | #include <sys/utsname.h> | |
41 | #include <bits/wordsize.h> | |
42 | #include <sys/ipc.h> | |
43 | #include <sys/sem.h> | |
44 | #include <sys/mman.h> | |
45 | #include <syscall.h> | |
46 | #include <linux/personality.h> | |
47 | #include "usb-driver.h" | |
48 | #include "config.h" | |
49 | #include "xpcu.h" | |
50 | ||
51 | static int (*ioctl_func) (int, int, void *) = NULL; | |
52 | static int *windrvrfds = NULL; | |
53 | static int windrvrfds_count = 0; | |
54 | static unsigned long ppbase = 0; | |
55 | static unsigned long ecpbase = 0; | |
56 | static struct parport_config *pport = NULL; | |
57 | static FILE *modulesfp = NULL; | |
58 | static FILE *baseaddrfp = NULL; | |
59 | static int baseaddrnum = 0; | |
60 | static int modules_read = 0; | |
61 | ||
62 | #define NO_WINDRVR 1 | |
63 | ||
64 | void hexdump(unsigned char *buf, int len, char *prefix) { | |
65 | int i = 0; | |
66 | ||
67 | fprintf(stderr, "%s %03x: ", prefix, i); | |
68 | for(i = 0; i<len; i++) { | |
69 | fprintf(stderr,"%02x ", buf[i]); | |
70 | if ((i % 16) == 7) | |
71 | fprintf(stderr," "); | |
72 | if (((i % 16) == 15) && ((i+1) < len)) | |
73 | fprintf(stderr,"\n%s %03x: ", prefix, i+1); | |
74 | } | |
75 | fprintf(stderr,"\n"); | |
76 | } | |
77 | ||
78 | ||
79 | static int do_wdioctl(int fd, unsigned int request, unsigned char *wdioctl) { | |
80 | struct header_struct* wdheader = (struct header_struct*)wdioctl; | |
81 | struct version_struct *version; | |
82 | int ret = 0; | |
83 | ||
84 | if (wdheader->magic != MAGIC) { | |
85 | fprintf(stderr,"!!!ERROR: magic header does not match!!!\n"); | |
86 | return (*ioctl_func) (fd, request, wdioctl); | |
87 | } | |
88 | ||
89 | switch(request & ~(0xc0000000)) { | |
90 | case VERSION: | |
91 | version = (struct version_struct*)(wdheader->data); | |
92 | strcpy(version->version, "libusb-driver.so version: " USB_DRIVER_VERSION); | |
93 | version->versionul = 802; | |
94 | DPRINTF("VERSION\n"); | |
95 | break; | |
96 | ||
97 | case LICENSE: | |
98 | DPRINTF("LICENSE\n"); | |
99 | break; | |
100 | ||
101 | case CARD_REGISTER_OLD: | |
102 | case CARD_REGISTER: | |
103 | DPRINTF("CARD_REGISTER\n"); | |
104 | { | |
105 | struct card_register* cr = (struct card_register*)(wdheader->data); | |
106 | ||
107 | DPRINTF("-> Items: %lu, Addr: 0x%lx, bytes: %lu, bar: %lu\n", | |
108 | cr->Card.dwItems, | |
109 | (unsigned long)cr->Card.Item[0].I.IO.dwAddr, | |
110 | cr->Card.Item[0].I.IO.dwBytes, | |
111 | cr->Card.Item[0].I.IO.dwBar); | |
112 | ||
113 | DPRINTF("-> Items: %lu, Addr: 0x%lx, bytes: %lu, bar: %lu\n", | |
114 | cr->Card.dwItems, | |
115 | (unsigned long)cr->Card.Item[1].I.IO.dwAddr, | |
116 | cr->Card.Item[1].I.IO.dwBytes, | |
117 | cr->Card.Item[1].I.IO.dwBar); | |
118 | #ifndef NO_WINDRVR | |
119 | ret = (*ioctl_func) (fd, request, wdioctl); | |
120 | #else | |
121 | cr->hCard = 0; | |
122 | ||
123 | pport = config_get((unsigned long)cr->Card.Item[0].I.IO.dwAddr / 0x10); | |
124 | if (!pport) | |
125 | break; | |
126 | ||
127 | ret = pport->open((unsigned long)cr->Card.Item[0].I.IO.dwAddr / 0x10); | |
128 | ||
129 | ppbase = (unsigned long)cr->Card.Item[0].I.IO.dwAddr; | |
130 | ||
131 | if (cr->Card.dwItems > 1 && cr->Card.Item[1].I.IO.dwAddr) | |
132 | ecpbase = (unsigned long)cr->Card.Item[1].I.IO.dwAddr; | |
133 | ||
134 | if (ret >= 0) { | |
135 | cr->hCard = ret; | |
136 | } else { | |
137 | cr->hCard = 0; | |
138 | } | |
139 | #endif | |
140 | DPRINTF("<-hCard: %lu\n", cr->hCard); | |
141 | } | |
142 | break; | |
143 | ||
144 | case USB_TRANSFER: | |
145 | DPRINTF("USB_TRANSFER\n"); | |
146 | { | |
147 | struct usb_transfer *ut = (struct usb_transfer*)(wdheader->data); | |
148 | ||
149 | #ifdef DEBUG | |
150 | DPRINTF("-> unique: 0x%lx, pipe: %lu, read: %lu, options: %lx, size: %lu, timeout: %lx\n", | |
151 | ut->dwUniqueID, ut->dwPipeNum, ut->fRead, | |
152 | ut->dwOptions, ut->dwBufferSize, ut->dwTimeout); | |
153 | if (ut->dwPipeNum == 0) { | |
154 | DPRINTF("-> setup packet:"); | |
155 | hexdump(ut->SetupPacket, 8, ""); | |
156 | } | |
157 | ||
158 | if (!ut->fRead && ut->dwBufferSize) | |
159 | { | |
160 | hexdump(ut->pBuffer, ut->dwBufferSize, "->"); | |
161 | } | |
162 | #endif | |
163 | ||
164 | #ifndef NO_WINDRVR | |
165 | ret = (*ioctl_func) (fd, request, wdioctl); | |
166 | #else | |
167 | ret = xpcu_transfer(ut); | |
168 | #endif | |
169 | ||
170 | #ifdef DEBUG | |
171 | DPRINTF("Transferred: %lu (%s)\n",ut->dwBytesTransferred, (ut->fRead?"read":"write")); | |
172 | if (ut->fRead && ut->dwBytesTransferred) | |
173 | { | |
174 | hexdump(ut->pBuffer, ut->dwBytesTransferred, "<-"); | |
175 | } | |
176 | #endif | |
177 | } | |
178 | break; | |
179 | ||
180 | case INT_ENABLE_OLD: | |
181 | case INT_ENABLE: | |
182 | DPRINTF("INT_ENABLE\n"); | |
183 | { | |
184 | struct interrupt *it = (struct interrupt*)(wdheader->data); | |
185 | ||
186 | DPRINTF("-> Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n", | |
187 | it->hInterrupt, it->dwOptions, | |
188 | it->dwCmds, it->fEnableOk, it->dwCounter, | |
189 | it->dwLost, it->fStopped); | |
190 | ||
191 | #ifndef NO_WINDRVR | |
192 | ret = (*ioctl_func) (fd, request, wdioctl); | |
193 | #else | |
194 | ret = xpcu_int_state(it, ENABLE_INTERRUPT); | |
195 | #endif | |
196 | ||
197 | DPRINTF("<- Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n", | |
198 | it->hInterrupt, it->dwOptions, | |
199 | it->dwCmds, it->fEnableOk, it->dwCounter, | |
200 | it->dwLost, it->fStopped); | |
201 | } | |
202 | ||
203 | break; | |
204 | ||
205 | case INT_DISABLE: | |
206 | DPRINTF("INT_DISABLE\n"); | |
207 | { | |
208 | struct interrupt *it = (struct interrupt*)(wdheader->data); | |
209 | ||
210 | DPRINTF("-> Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n", | |
211 | it->hInterrupt, it->dwOptions, | |
212 | it->dwCmds, it->fEnableOk, it->dwCounter, | |
213 | it->dwLost, it->fStopped); | |
214 | #ifndef NO_WINDRVR | |
215 | ret = (*ioctl_func) (fd, request, wdioctl); | |
216 | #else | |
217 | ret = xpcu_int_state(it, DISABLE_INTERRUPT); | |
218 | #endif | |
219 | DPRINTF("<- Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n", | |
220 | it->hInterrupt, it->dwOptions, | |
221 | it->dwCmds, it->fEnableOk, it->dwCounter, | |
222 | it->dwLost, it->fStopped); | |
223 | } | |
224 | break; | |
225 | ||
226 | case USB_SET_INTERFACE: | |
227 | DPRINTF("USB_SET_INTERFACE\n"); | |
228 | { | |
229 | struct usb_set_interface *usi = (struct usb_set_interface*)(wdheader->data); | |
230 | ||
231 | DPRINTF("-> unique: 0x%lx, interfacenum: %lu, alternatesetting: %lu, options: %lx\n", | |
232 | usi->dwUniqueID, usi->dwInterfaceNum, | |
233 | usi->dwAlternateSetting, usi->dwOptions); | |
234 | #ifndef NO_WINDRVR | |
235 | ret = (*ioctl_func) (fd, request, wdioctl); | |
236 | #else | |
237 | ret = xpcu_set_interface(usi); | |
238 | #endif | |
239 | DPRINTF("<- unique: 0x%lx, interfacenum: %lu, alternatesetting: %lu, options: %lx\n", | |
240 | usi->dwUniqueID, usi->dwInterfaceNum, | |
241 | usi->dwAlternateSetting, usi->dwOptions); | |
242 | } | |
243 | break; | |
244 | ||
245 | case USB_GET_DEVICE_DATA_OLD: | |
246 | case USB_GET_DEVICE_DATA: | |
247 | DPRINTF("USB_GET_DEVICE_DATA\n"); | |
248 | { | |
249 | struct usb_get_device_data *ugdd = (struct usb_get_device_data*)(wdheader->data); | |
250 | ||
251 | DPRINTF("-> unique: 0x%lx, bytes: %lu, options: %lx\n", | |
252 | ugdd->dwUniqueID, ugdd->dwBytes, | |
253 | ugdd->dwOptions); | |
254 | ||
255 | ret = xpcu_deviceinfo(ugdd); | |
256 | ||
257 | } | |
258 | break; | |
259 | ||
260 | case EVENT_REGISTER_OLD: | |
261 | case EVENT_REGISTER: | |
262 | DPRINTF("EVENT_REGISTER\n"); | |
263 | { | |
264 | struct event *e = (struct event*)(wdheader->data); | |
265 | #ifdef DEBUG | |
266 | int i; | |
267 | #endif | |
268 | ||
269 | DPRINTF("-> handle: 0x%lx, action: %lu, status: %lu, eventid: %lu, cardtype: %lu, kplug: %lu, options: %lu, dev: %lx:%lx, unique: 0x%lx, ver: %lu, nummatch: %lu\n", | |
270 | e->handle, e->dwAction, | |
271 | e->dwStatus, e->dwEventId, e->dwCardType, | |
272 | e->hKernelPlugIn, e->dwOptions, | |
273 | e->u.Usb.deviceId.dwVendorId, | |
274 | e->u.Usb.deviceId.dwProductId, | |
275 | e->u.Usb.dwUniqueID, e->dwEventVer, | |
276 | e->dwNumMatchTables); | |
277 | ||
278 | #ifndef NO_WINDRVR | |
279 | ret = (*ioctl_func) (fd, request, wdioctl); | |
280 | #else | |
281 | ret = xpcu_find(e); | |
282 | #endif | |
283 | ||
284 | #ifdef DEBUG | |
285 | DPRINTF("<- handle: 0x%lx, action: %lu, status: %lu, eventid: %lu, cardtype: %lu, kplug: %lu, options: %lu, dev: %lx:%lx, unique: 0x%lx, ver: %lu, nummatch: %lu\n", | |
286 | e->handle, e->dwAction, | |
287 | e->dwStatus, e->dwEventId, e->dwCardType, | |
288 | e->hKernelPlugIn, e->dwOptions, | |
289 | e->u.Usb.deviceId.dwVendorId, | |
290 | e->u.Usb.deviceId.dwProductId, | |
291 | e->u.Usb.dwUniqueID, e->dwEventVer, | |
292 | e->dwNumMatchTables); | |
293 | ||
294 | for (i = 0; i < e->dwNumMatchTables; i++) | |
295 | DPRINTF("match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n", | |
296 | e->matchTables[i].VendorId, | |
297 | e->matchTables[i].ProductId, | |
298 | e->matchTables[i].bDeviceClass, | |
299 | e->matchTables[i].bDeviceSubClass, | |
300 | e->matchTables[i].bInterfaceClass, | |
301 | e->matchTables[i].bInterfaceSubClass, | |
302 | e->matchTables[i].bInterfaceProtocol); | |
303 | #endif | |
304 | } | |
305 | break; | |
306 | ||
307 | case TRANSFER_OLD: | |
308 | case TRANSFER: | |
309 | DPRINTF("TRANSFER\n"); | |
310 | { | |
311 | WD_TRANSFER *tr = (WD_TRANSFER*)(wdheader->data); | |
312 | ||
313 | #ifndef NO_WINDRVR | |
314 | ret = (*ioctl_func) (fd, request, wdioctl); | |
315 | #else | |
316 | ret = pport->transfer(tr, fd, request, ppbase, ecpbase, 1); | |
317 | #endif | |
318 | } | |
319 | break; | |
320 | ||
321 | case MULTI_TRANSFER_OLD: | |
322 | case MULTI_TRANSFER: | |
323 | DPRINTF("MULTI_TRANSFER\n"); | |
324 | { | |
325 | WD_TRANSFER *tr = (WD_TRANSFER*)(wdheader->data); | |
326 | unsigned long num = wdheader->size/sizeof(WD_TRANSFER); | |
327 | #ifndef NO_WINDRVR | |
328 | ret = (*ioctl_func) (fd, request, wdioctl); | |
329 | #else | |
330 | ret = pport->transfer(tr, fd, request, ppbase, ecpbase, num); | |
331 | #endif | |
332 | } | |
333 | break; | |
334 | ||
335 | case EVENT_UNREGISTER: | |
336 | { | |
337 | struct event *e = (struct event*)(wdheader->data); | |
338 | ||
339 | DPRINTF("EVENT_UNREGISTER\n"); | |
340 | #ifndef NO_WINDRVR | |
341 | ret = (*ioctl_func) (fd, request, wdioctl); | |
342 | #else | |
343 | ret = xpcu_close(e); | |
344 | #endif | |
345 | } | |
346 | break; | |
347 | ||
348 | case INT_WAIT: | |
349 | DPRINTF("INT_WAIT\n"); | |
350 | { | |
351 | struct interrupt *it = (struct interrupt*)(wdheader->data); | |
352 | ||
353 | DPRINTF("-> Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n", | |
354 | it->hInterrupt, it->dwOptions, | |
355 | it->dwCmds, it->fEnableOk, it->dwCounter, | |
356 | it->dwLost, it->fStopped); | |
357 | ||
358 | #ifndef NO_WINDRVR | |
359 | ret = (*ioctl_func) (fd, request, wdioctl); | |
360 | #else | |
361 | ret = xpcu_int_wait(it); | |
362 | #endif | |
363 | ||
364 | DPRINTF("<- INT_WAIT_RETURN: Handle: 0x%lx, Options: %lx, ncmds: %lu, enableok: %lu, count: %lu, lost: %lu, stopped: %lu\n", | |
365 | it->hInterrupt, it->dwOptions, it->dwCmds, | |
366 | it->fEnableOk, it->dwCounter, it->dwLost, | |
367 | it->fStopped); | |
368 | } | |
369 | break; | |
370 | ||
371 | case CARD_UNREGISTER: | |
372 | DPRINTF("CARD_UNREGISTER\n"); | |
373 | { | |
374 | struct card_register* cr = (struct card_register*)(wdheader->data); | |
375 | ||
376 | DPRINTF("-> Addr: 0x%lx, bytes: %lu, bar: %lu\n", | |
377 | (unsigned long)cr->Card.Item[0].I.IO.dwAddr, | |
378 | cr->Card.Item[0].I.IO.dwBytes, | |
379 | cr->Card.Item[0].I.IO.dwBar); | |
380 | ||
381 | DPRINTF("-> hCard: %lu\n", cr->hCard); | |
382 | ||
383 | #ifndef NO_WINDRVR | |
384 | ret = (*ioctl_func) (fd, request, wdioctl); | |
385 | #else | |
386 | if (pport) | |
387 | pport->close(cr->hCard); | |
388 | ||
389 | pport = NULL; | |
390 | #endif | |
391 | } | |
392 | break; | |
393 | ||
394 | case EVENT_PULL: | |
395 | DPRINTF("EVENT_PULL\n"); | |
396 | { | |
397 | struct event *e = (struct event*)(wdheader->data); | |
398 | #ifdef DEBUG | |
399 | int i; | |
400 | ||
401 | DPRINTF("-> handle: 0x%lx, action: %lu, status: %lu, eventid: %lu, cardtype: %lx, kplug: %lu, options: %lu, dev: %lx:%lx, unique: 0x%lx, ver: %lu, nummatch: %lu\n", | |
402 | e->handle, e->dwAction, e->dwStatus, | |
403 | e->dwEventId, e->dwCardType, e->hKernelPlugIn, | |
404 | e->dwOptions, e->u.Usb.deviceId.dwVendorId, | |
405 | e->u.Usb.deviceId.dwProductId, | |
406 | e->u.Usb.dwUniqueID, e->dwEventVer, | |
407 | e->dwNumMatchTables); | |
408 | ||
409 | for (i = 0; i < e->dwNumMatchTables; i++) | |
410 | DPRINTF("-> match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n", | |
411 | e->matchTables[i].VendorId, | |
412 | e->matchTables[i].ProductId, | |
413 | e->matchTables[i].bDeviceClass, | |
414 | e->matchTables[i].bDeviceSubClass, | |
415 | e->matchTables[i].bInterfaceClass, | |
416 | e->matchTables[i].bInterfaceSubClass, | |
417 | e->matchTables[i].bInterfaceProtocol); | |
418 | #endif | |
419 | ||
420 | #ifndef NO_WINDRVR | |
421 | ret = (*ioctl_func) (fd, request, wdioctl); | |
422 | #else | |
423 | ret = xpcu_found(e); | |
424 | #endif | |
425 | ||
426 | #ifdef DEBUG | |
427 | DPRINTF("<- handle: 0x%lx, action: %lu, status: %lu, eventid: %lu, cardtype: %lx, kplug: %lu, options: %lu, dev: %lx:%lx, unique: 0x%lx, ver: %lu, nummatch: %lu\n", | |
428 | e->handle, e->dwAction, e->dwStatus, | |
429 | e->dwEventId, e->dwCardType, e->hKernelPlugIn, | |
430 | e->dwOptions, e->u.Usb.deviceId.dwVendorId, | |
431 | e->u.Usb.deviceId.dwProductId, | |
432 | e->u.Usb.dwUniqueID, e->dwEventVer, | |
433 | e->dwNumMatchTables); | |
434 | ||
435 | for (i = 0; i < e->dwNumMatchTables; i++) | |
436 | DPRINTF("<- match: dev: %04x:%04x, class: %x, subclass: %x, intclass: %x, intsubclass: %x, intproto: %x\n", | |
437 | e->matchTables[i].VendorId, | |
438 | e->matchTables[i].ProductId, | |
439 | e->matchTables[i].bDeviceClass, | |
440 | e->matchTables[i].bDeviceSubClass, | |
441 | e->matchTables[i].bInterfaceClass, | |
442 | e->matchTables[i].bInterfaceSubClass, | |
443 | e->matchTables[i].bInterfaceProtocol); | |
444 | #endif | |
445 | ||
446 | } | |
447 | break; | |
448 | ||
449 | default: | |
450 | fprintf(stderr,"!!!Unsupported IOCTL: %x!!!\n", request); | |
451 | #ifndef NO_WINDRVR | |
452 | ret = (*ioctl_func) (fd, request, wdioctl); | |
453 | #endif | |
454 | break; | |
455 | } | |
456 | ||
457 | return ret; | |
458 | } | |
459 | ||
460 | int ioctl(int fd, unsigned long int request, ...) { | |
461 | va_list args; | |
462 | void *argp; | |
463 | int i; | |
464 | ||
465 | if (!ioctl_func) | |
466 | ioctl_func = (int (*) (int, int, void *)) dlsym (RTLD_NEXT, "ioctl"); | |
467 | ||
468 | va_start (args, request); | |
469 | argp = va_arg (args, void *); | |
470 | va_end (args); | |
471 | ||
472 | for (i = 0; i < windrvrfds_count; i++) { | |
473 | if (fd == windrvrfds[i]) | |
474 | return do_wdioctl(fd, request, argp); | |
475 | } | |
476 | ||
477 | return (*ioctl_func) (fd, request, argp); | |
478 | } | |
479 | ||
480 | int open (const char *pathname, int flags, ...) { | |
481 | static int (*func) (const char *, int, mode_t) = NULL; | |
482 | mode_t mode = 0; | |
483 | va_list args; | |
484 | int fd; | |
485 | ||
486 | if (!func) | |
487 | func = (int (*) (const char *, int, mode_t)) dlsym (RTLD_NEXT, "open"); | |
488 | ||
489 | if (flags & O_CREAT) { | |
490 | va_start(args, flags); | |
491 | mode = va_arg(args, mode_t); | |
492 | va_end(args); | |
493 | } | |
494 | ||
495 | if (!strcmp (pathname, "/dev/windrvr6")) { | |
496 | DPRINTF("opening windrvr6 (%d)\n", windrvrfds_count); | |
497 | windrvrfds = realloc(windrvrfds, sizeof(int) * (++windrvrfds_count)); | |
498 | if (!windrvrfds) | |
499 | return -ENOMEM; | |
500 | ||
501 | #ifdef NO_WINDRVR | |
502 | windrvrfds[windrvrfds_count-1] = fd = (*func) ("/dev/null", flags, mode); | |
503 | #else | |
504 | windrvrfds[windrvrfds_count-1] = fd = (*func) (pathname, flags, mode); | |
505 | #endif | |
506 | ||
507 | return fd; | |
508 | } | |
509 | ||
510 | return (*func) (pathname, flags, mode); | |
511 | } | |
512 | ||
513 | int close(int fd) { | |
514 | static int (*func) (int) = NULL; | |
515 | int i; | |
516 | ||
517 | if (!func) | |
518 | func = (int (*) (int)) dlsym(RTLD_NEXT, "close"); | |
519 | ||
520 | for (i = 0; i < windrvrfds_count; i++) { | |
521 | if (fd == windrvrfds[i] && windrvrfds[i] >= 0) { | |
522 | int remaining = windrvrfds_count - (i + 1); | |
523 | DPRINTF("close windrvr6 (%d)\n", i); | |
524 | if (remaining) | |
525 | memmove(&(windrvrfds[i]), &(windrvrfds[i+1]), remaining * sizeof(int)); | |
526 | windrvrfds = realloc(windrvrfds, sizeof(int) * --windrvrfds_count); | |
527 | if (!windrvrfds_count) | |
528 | windrvrfds = NULL; | |
529 | break; | |
530 | } | |
531 | } | |
532 | ||
533 | return (*func) (fd); | |
534 | } | |
535 | ||
536 | FILE *fopen(const char *path, const char *mode) { | |
537 | FILE *ret; | |
538 | static FILE* (*func) (const char*, const char*) = NULL; | |
539 | char buf[256]; | |
540 | int i; | |
541 | ||
542 | if (!func) | |
543 | func = (FILE* (*) (const char*, const char*)) dlsym(RTLD_NEXT, "fopen"); | |
544 | ||
545 | for (i = 0; i < 4; i++) { | |
546 | snprintf(buf, sizeof(buf), "/proc/sys/dev/parport/parport%d/base-addr", i); | |
547 | if (!strcmp(path, buf)) { | |
548 | DPRINTF("open base-addr of parport%d\n", i); | |
549 | if (config_is_real_pport(i)) { | |
550 | ret = (*func) (path, mode); | |
551 | } else { | |
552 | ret = (*func) ("/dev/null", mode); | |
553 | } | |
554 | ||
555 | if (ret) { | |
556 | baseaddrfp = ret; | |
557 | baseaddrnum = i; | |
558 | } | |
559 | ||
560 | return ret; | |
561 | } | |
562 | } | |
563 | ||
564 | ret = (*func) (path, mode); | |
565 | ||
566 | if (!strcmp(path, "/proc/modules")) { | |
567 | DPRINTF("opening /proc/modules\n"); | |
568 | if (!ret && errno == ENOENT) { | |
569 | /* Hmm.. there appears to be no /proc/modules file | |
570 | * fake it then */ | |
571 | ret = (*func)("/dev/null", mode); | |
572 | DPRINTF("No /proc/modules -- faking\n"); | |
573 | } | |
574 | #ifdef NO_WINDRVR | |
575 | modulesfp = ret; | |
576 | modules_read = 0; | |
577 | #endif | |
578 | } | |
579 | ||
580 | return ret; | |
581 | } | |
582 | ||
583 | char *fgets(char *s, int size, FILE *stream) { | |
584 | static char* (*func) (char*, int, FILE*) = NULL; | |
585 | const char modules[][256] = {"windrvr6 1 0 - Live 0xdeadbeef\n", "parport_pc 1 0 - Live 0xdeadbeef\n"}; | |
586 | char buf[256]; | |
587 | char *ret = NULL; | |
588 | ||
589 | ||
590 | if (!func) | |
591 | func = (char* (*) (char*, int, FILE*)) dlsym(RTLD_NEXT, "fgets"); | |
592 | ||
593 | if (modulesfp == stream) { | |
594 | if (modules_read < sizeof(modules) / sizeof(modules[0])) { | |
595 | strcpy(s, modules[modules_read]); | |
596 | ret = s; | |
597 | modules_read++; | |
598 | } | |
599 | } else if (baseaddrfp == stream) { | |
600 | snprintf(s, sizeof(buf), "%d\t%d\n", | |
601 | (baseaddrnum) * 0x10, | |
602 | ((baseaddrnum) * 0x10) + 0x400); | |
603 | ret = s; | |
604 | } else { | |
605 | ret = (*func)(s,size,stream); | |
606 | } | |
607 | ||
608 | return ret; | |
609 | } | |
610 | ||
611 | int fclose(FILE *fp) { | |
612 | static int (*func) (FILE*) = NULL; | |
613 | ||
614 | if (!func) | |
615 | func = (int (*) (FILE*)) dlsym(RTLD_NEXT, "fclose"); | |
616 | ||
617 | if (fp == modulesfp) { | |
618 | modulesfp = NULL; | |
619 | } | |
620 | ||
621 | if (fp == baseaddrfp) { | |
622 | baseaddrfp = NULL; | |
623 | } | |
624 | ||
625 | return (*func)(fp); | |
626 | } | |
627 | ||
628 | int access(const char *pathname, int mode) { | |
629 | static int (*func) (const char*, int); | |
630 | ||
631 | if (!func) | |
632 | func = (int (*) (const char*, int)) dlsym(RTLD_NEXT, "access"); | |
633 | ||
634 | if (pathname && !strcmp(pathname, "/dev/windrvr6")) { | |
635 | return 0; | |
636 | } else { | |
637 | return (*func)(pathname, mode); | |
638 | } | |
639 | } | |
640 | ||
641 | #if 0 | |
642 | /* USB cable sharing needs to overload semop, TODO! */ | |
643 | int semop (int __semid, struct sembuf *__sops, size_t __nsops) { | |
644 | static int (*func) (int, struct sembuf*, size_t) = NULL; | |
645 | int i; | |
646 | ||
647 | if (!func) | |
648 | func = (int (*) (int, struct sembuf*, size_t)) dlsym(RTLD_NEXT, "semop"); | |
649 | ||
650 | fprintf(stderr,"semop: semid: 0x%X, elements: %d\n", __semid, __nsops); | |
651 | for (i = 0; i < __nsops; i++) { | |
652 | fprintf(stderr, " num: %u, op: %d, flg: %d\n", __sops[i].sem_num, __sops[i].sem_op, __sops[i].sem_flg); | |
653 | if (__sops[i].sem_op < 0) { | |
654 | fprintf(stderr, "SEMAPHORE LOCK\n"); | |
655 | } else { | |
656 | fprintf(stderr, "SEMAPHORE UNLOCK\n"); | |
657 | } | |
658 | } | |
659 | ||
660 | return (*func)(__semid, __sops, __nsops); | |
661 | } | |
662 | #endif | |
663 | ||
664 | /* | |
665 | * Ugly hack for ISE 12. Preload doesn't seem to work correctly for | |
666 | * libImpactComm.so. Even though the file is still read with fopen(), | |
667 | * the version from libc is used and not the one from this file. | |
668 | * Replace the function calling fopen() instead... | |
669 | * echo '_Z14isModuleLoadedPci' | c++filt | |
670 | */ | |
671 | long int _Z14isModuleLoadedPci(char *module_name, int i) { | |
672 | DPRINTF("_Z14isModuleLoadedPci: Checking for module %s (%d)\n", module_name, i); | |
673 | ||
674 | return 1; | |
675 | } | |
676 | ||
677 | void cpr_segv_handler(int sig, siginfo_t *info, void *context) { | |
678 | void *newmem; | |
679 | ||
680 | DPRINTF("SEGV at %p, mapping memory\n", info->si_addr); | |
681 | errno = 0; | |
682 | newmem = mmap(info->si_addr, 1, PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, -1, 0); | |
683 | if (newmem != info->si_addr) { | |
684 | perror("libusb-driver.so: Can't map memory, crashing now"); | |
685 | exit(EXIT_FAILURE); | |
686 | } | |
687 | } | |
688 | ||
689 | /* XilCommNS::CPortResources::Instance() */ | |
690 | void* _ZN9XilCommNS14CPortResources8InstanceEv() { | |
691 | static void* (*func) (void) = NULL; | |
692 | char *filename = NULL; | |
693 | void *ret; | |
694 | int i; | |
695 | ||
696 | if (!func) { | |
697 | struct sigaction act, oldact; | |
698 | int sighand_installed = 0; | |
699 | ||
700 | func = (void* (*) (void)) dlsym(RTLD_NEXT, "_ZN9XilCommNS14CPortResources8InstanceEv"); | |
701 | ||
702 | DPRINTF("Installing signal-handler for SIGSEGV\n"); | |
703 | bzero(&act, sizeof(struct sigaction)); | |
704 | act.sa_sigaction = cpr_segv_handler; | |
705 | act.sa_flags = SA_SIGINFO; | |
706 | if (sigaction(SIGSEGV, &act, &oldact) == 0) { | |
707 | sighand_installed = 1; | |
708 | } | |
709 | ||
710 | DPRINTF("Searching for filename starting at %p\n", func); | |
711 | for(i = 0; i < 32768; i++) { | |
712 | if (!strcmp(((char*)func)+i, "/proc/sys/dev/parport/%s/base-addr")) { | |
713 | filename = ((char*)func)+i; | |
714 | DPRINTF("Filename found at offset %p\n", (void*)(filename - ((char*)func))); | |
715 | break; | |
716 | } | |
717 | } | |
718 | if (sighand_installed) { | |
719 | DPRINTF("Restoring signal-handler for SIGSEGV\n"); | |
720 | sigaction(SIGSEGV, &oldact, NULL); | |
721 | } | |
722 | if (!filename) | |
723 | fprintf(stderr, "libusb-driver.so: Can't find memory to patch, parallel cables will probably not work!\n"); | |
724 | } | |
725 | ||
726 | if (filename) { | |
727 | long pagesize; | |
728 | size_t protectlen; | |
729 | void *start; | |
730 | int len = strlen(filename) + 1; | |
731 | int ret; | |
732 | ||
733 | pagesize = sysconf(_SC_PAGE_SIZE); | |
734 | DPRINTF("You have %lu bytes sized pages!\n", pagesize); | |
735 | ||
736 | start = (void*)((long)filename & (~(pagesize-1))); | |
737 | ||
738 | protectlen = pagesize; | |
739 | if ((long)(filename + len) > (long)(start + protectlen)) | |
740 | protectlen += pagesize; | |
741 | ||
742 | DPRINTF("Unprotecting %zd bytes starting at %p\n", protectlen, start); | |
743 | ret = mprotect(start, protectlen, PROT_READ|PROT_WRITE); | |
744 | if (ret == -1) | |
745 | perror("mprotect"); | |
746 | ||
747 | DPRINTF("Replacing %s with /dev/zero\n", filename); | |
748 | strcpy(filename, "/dev/zero"); | |
749 | ||
750 | DPRINTF("Reprotecting %zd bytes starting at %p\n", protectlen, start); | |
751 | ret = mprotect(start, protectlen, PROT_READ|PROT_EXEC); | |
752 | if (ret == -1) | |
753 | perror("mprotect"); | |
754 | } | |
755 | ||
756 | DPRINTF("-> XilCommNS::CPortResources::Instance()\n"); | |
757 | ||
758 | ret = func(); | |
759 | ||
760 | DPRINTF("<- XilCommNS::CPortResources::Instance()\n"); | |
761 | ||
762 | return ret; | |
763 | } | |
764 | ||
765 | static void __attribute__ ((constructor)) libusbdriver_init(void) { | |
766 | int i; | |
767 | char buf[256]; | |
768 | char buf2[256]; | |
769 | ||
770 | for (i = 0; i < 4; i++) { | |
771 | snprintf(buf, sizeof(buf), "XIL_IMPACT_ENV_LPT%d_BASE_ADDRESS", i+1); | |
772 | snprintf(buf2, sizeof(buf2), "%x", 0x10*i); | |
773 | setenv(buf, buf2, 1); | |
774 | snprintf(buf, sizeof(buf), "XIL_IMPACT_ENV_LPT%d_ECP_ADDRESS", i+1); | |
775 | snprintf(buf2, sizeof(buf2), "%x", (0x10*i)+0x400); | |
776 | setenv(buf, buf2, 1); | |
777 | } | |
778 | ||
779 | setenv("XIL_IMPACT_USE_LIBUSB", "0", 1); | |
780 | setenv("XIL_IMPACT_USE_WINDRIVER", "1", 1); | |
781 | ||
782 | #if __WORDSIZE == 32 | |
783 | { | |
784 | struct utsname un; | |
785 | int ret; | |
786 | ||
787 | ret = uname(&un); | |
788 | ||
789 | if (ret == 0 && (!strcmp(un.machine, "x86_64"))) { | |
790 | DPRINTF("setting 32bit personality\n"); | |
791 | (long)syscall(SYS_personality, PER_LINUX32); | |
792 | } | |
793 | } | |
794 | #endif | |
795 | } |