projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge remote-tracking branch 'usb/usb-next'
[deliverable/linux.git] / drivers / usb / misc / sisusbvga / sisusb.c
1 /*
2 * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles
3 *
4 * Main part
5 *
6 * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
7 *
8 * If distributed as part of the Linux kernel, this code is licensed under the
9 * terms of the GPL v2.
10 *
11 * Otherwise, the following license terms apply:
12 *
13 * * Redistribution and use in source and binary forms, with or without
14 * * modification, are permitted provided that the following conditions
15 * * are met:
16 * * 1) Redistributions of source code must retain the above copyright
17 * * notice, this list of conditions and the following disclaimer.
18 * * 2) Redistributions in binary form must reproduce the above copyright
19 * * notice, this list of conditions and the following disclaimer in the
20 * * documentation and/or other materials provided with the distribution.
21 * * 3) The name of the author may not be used to endorse or promote products
22 * * derived from this software without specific psisusbr written permission.
23 * *
24 * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR
25 * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26 * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29 * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33 * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 * Author: Thomas Winischhofer <thomas@winischhofer.net>
36 *
37 */
38
39 #include <linux/mutex.h>
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/signal.h>
43 #include <linux/errno.h>
44 #include <linux/poll.h>
45 #include <linux/init.h>
46 #include <linux/slab.h>
47 #include <linux/spinlock.h>
48 #include <linux/kref.h>
49 #include <linux/usb.h>
50 #include <linux/vmalloc.h>
51
52 #include "sisusb.h"
53 #include "sisusb_init.h"
54
55 #ifdef INCL_SISUSB_CON
56 #include <linux/font.h>
57 #endif
58
59 #define SISUSB_DONTSYNC
60
61 /* Forward declarations / clean-up routines */
62
63 #ifdef INCL_SISUSB_CON
64 static int sisusb_first_vc;
65 static int sisusb_last_vc;
66 module_param_named(first, sisusb_first_vc, int, 0);
67 module_param_named(last, sisusb_last_vc, int, 0);
68 MODULE_PARM_DESC(first, "Number of first console to take over (1 - MAX_NR_CONSOLES)");
69 MODULE_PARM_DESC(last, "Number of last console to take over (1 - MAX_NR_CONSOLES)");
70 #endif
71
72 static struct usb_driver sisusb_driver;
73
74 static void sisusb_free_buffers(struct sisusb_usb_data *sisusb)
75 {
76 int i;
77
78 for (i = 0; i < NUMOBUFS; i++) {
79 kfree(sisusb->obuf[i]);
80 sisusb->obuf[i] = NULL;
81 }
82 kfree(sisusb->ibuf);
83 sisusb->ibuf = NULL;
84 }
85
86 static void sisusb_free_urbs(struct sisusb_usb_data *sisusb)
87 {
88 int i;
89
90 for (i = 0; i < NUMOBUFS; i++) {
91 usb_free_urb(sisusb->sisurbout[i]);
92 sisusb->sisurbout[i] = NULL;
93 }
94 usb_free_urb(sisusb->sisurbin);
95 sisusb->sisurbin = NULL;
96 }
97
98 /* Level 0: USB transport layer */
99
100 /* 1. out-bulks */
101
102 /* out-urb management */
103
104 /* Return 1 if all free, 0 otherwise */
105 static int sisusb_all_free(struct sisusb_usb_data *sisusb)
106 {
107 int i;
108
109 for (i = 0; i < sisusb->numobufs; i++) {
110
111 if (sisusb->urbstatus[i] & SU_URB_BUSY)
112 return 0;
113
114 }
115
116 return 1;
117 }
118
119 /* Kill all busy URBs */
120 static void sisusb_kill_all_busy(struct sisusb_usb_data *sisusb)
121 {
122 int i;
123
124 if (sisusb_all_free(sisusb))
125 return;
126
127 for (i = 0; i < sisusb->numobufs; i++) {
128
129 if (sisusb->urbstatus[i] & SU_URB_BUSY)
130 usb_kill_urb(sisusb->sisurbout[i]);
131
132 }
133 }
134
135 /* Return 1 if ok, 0 if error (not all complete within timeout) */
136 static int sisusb_wait_all_out_complete(struct sisusb_usb_data *sisusb)
137 {
138 int timeout = 5 * HZ, i = 1;
139
140 wait_event_timeout(sisusb->wait_q, (i = sisusb_all_free(sisusb)),
141 timeout);
142
143 return i;
144 }
145
146 static int sisusb_outurb_available(struct sisusb_usb_data *sisusb)
147 {
148 int i;
149
150 for (i = 0; i < sisusb->numobufs; i++) {
151
152 if ((sisusb->urbstatus[i] & (SU_URB_BUSY|SU_URB_ALLOC)) == 0)
153 return i;
154
155 }
156
157 return -1;
158 }
159
160 static int sisusb_get_free_outbuf(struct sisusb_usb_data *sisusb)
161 {
162 int i, timeout = 5 * HZ;
163
164 wait_event_timeout(sisusb->wait_q,
165 ((i = sisusb_outurb_available(sisusb)) >= 0), timeout);
166
167 return i;
168 }
169
170 static int sisusb_alloc_outbuf(struct sisusb_usb_data *sisusb)
171 {
172 int i;
173
174 i = sisusb_outurb_available(sisusb);
175
176 if (i >= 0)
177 sisusb->urbstatus[i] |= SU_URB_ALLOC;
178
179 return i;
180 }
181
182 static void sisusb_free_outbuf(struct sisusb_usb_data *sisusb, int index)
183 {
184 if ((index >= 0) && (index < sisusb->numobufs))
185 sisusb->urbstatus[index] &= ~SU_URB_ALLOC;
186 }
187
188 /* completion callback */
189
190 static void sisusb_bulk_completeout(struct urb *urb)
191 {
192 struct sisusb_urb_context *context = urb->context;
193 struct sisusb_usb_data *sisusb;
194
195 if (!context)
196 return;
197
198 sisusb = context->sisusb;
199
200 if (!sisusb || !sisusb->sisusb_dev || !sisusb->present)
201 return;
202
203 #ifndef SISUSB_DONTSYNC
204 if (context->actual_length)
205 *(context->actual_length) += urb->actual_length;
206 #endif
207
208 sisusb->urbstatus[context->urbindex] &= ~SU_URB_BUSY;
209 wake_up(&sisusb->wait_q);
210 }
211
212 static int sisusb_bulkout_msg(struct sisusb_usb_data *sisusb, int index,
213 unsigned int pipe, void *data, int len, int *actual_length,
214 int timeout, unsigned int tflags)
215 {
216 struct urb *urb = sisusb->sisurbout[index];
217 int retval, byteswritten = 0;
218
219 /* Set up URB */
220 urb->transfer_flags = 0;
221
222 usb_fill_bulk_urb(urb, sisusb->sisusb_dev, pipe, data, len,
223 sisusb_bulk_completeout,
224 &sisusb->urbout_context[index]);
225
226 urb->transfer_flags |= tflags;
227 urb->actual_length = 0;
228
229 /* Set up context */
230 sisusb->urbout_context[index].actual_length = (timeout) ?
231 NULL : actual_length;
232
233 /* Declare this urb/buffer in use */
234 sisusb->urbstatus[index] |= SU_URB_BUSY;
235
236 /* Submit URB */
237 retval = usb_submit_urb(urb, GFP_KERNEL);
238
239 /* If OK, and if timeout > 0, wait for completion */
240 if ((retval == 0) && timeout) {
241 wait_event_timeout(sisusb->wait_q,
242 (!(sisusb->urbstatus[index] & SU_URB_BUSY)),
243 timeout);
244 if (sisusb->urbstatus[index] & SU_URB_BUSY) {
245 /* URB timed out... kill it and report error */
246 usb_kill_urb(urb);
247 retval = -ETIMEDOUT;
248 } else {
249 /* Otherwise, report urb status */
250 retval = urb->status;
251 byteswritten = urb->actual_length;
252 }
253 }
254
255 if (actual_length)
256 *actual_length = byteswritten;
257
258 return retval;
259 }
260
261 /* 2. in-bulks */
262
263 /* completion callback */
264
265 static void sisusb_bulk_completein(struct urb *urb)
266 {
267 struct sisusb_usb_data *sisusb = urb->context;
268
269 if (!sisusb || !sisusb->sisusb_dev || !sisusb->present)
270 return;
271
272 sisusb->completein = 1;
273 wake_up(&sisusb->wait_q);
274 }
275
276 static int sisusb_bulkin_msg(struct sisusb_usb_data *sisusb,
277 unsigned int pipe, void *data, int len,
278 int *actual_length, int timeout, unsigned int tflags)
279 {
280 struct urb *urb = sisusb->sisurbin;
281 int retval, readbytes = 0;
282
283 urb->transfer_flags = 0;
284
285 usb_fill_bulk_urb(urb, sisusb->sisusb_dev, pipe, data, len,
286 sisusb_bulk_completein, sisusb);
287
288 urb->transfer_flags |= tflags;
289 urb->actual_length = 0;
290
291 sisusb->completein = 0;
292 retval = usb_submit_urb(urb, GFP_KERNEL);
293 if (retval == 0) {
294 wait_event_timeout(sisusb->wait_q, sisusb->completein, timeout);
295 if (!sisusb->completein) {
296 /* URB timed out... kill it and report error */
297 usb_kill_urb(urb);
298 retval = -ETIMEDOUT;
299 } else {
300 /* URB completed within timeout */
301 retval = urb->status;
302 readbytes = urb->actual_length;
303 }
304 }
305
306 if (actual_length)
307 *actual_length = readbytes;
308
309 return retval;
310 }
311
312
313 /* Level 1: */
314
315 /* Send a bulk message of variable size
316 *
317 * To copy the data from userspace, give pointer to "userbuffer",
318 * to copy from (non-DMA) kernel memory, give "kernbuffer". If
319 * both of these are NULL, it is assumed, that the transfer
320 * buffer "sisusb->obuf[index]" is set up with the data to send.
321 * Index is ignored if either kernbuffer or userbuffer is set.
322 * If async is nonzero, URBs will be sent without waiting for
323 * completion of the previous URB.
324 *
325 * (return 0 on success)
326 */
327
328 static int sisusb_send_bulk_msg(struct sisusb_usb_data *sisusb, int ep, int len,
329 char *kernbuffer, const char __user *userbuffer, int index,
330 ssize_t *bytes_written, unsigned int tflags, int async)
331 {
332 int result = 0, retry, count = len;
333 int passsize, thispass, transferred_len = 0;
334 int fromuser = (userbuffer != NULL) ? 1 : 0;
335 int fromkern = (kernbuffer != NULL) ? 1 : 0;
336 unsigned int pipe;
337 char *buffer;
338
339 (*bytes_written) = 0;
340
341 /* Sanity check */
342 if (!sisusb || !sisusb->present || !sisusb->sisusb_dev)
343 return -ENODEV;
344
345 /* If we copy data from kernel or userspace, force the
346 * allocation of a buffer/urb. If we have the data in
347 * the transfer buffer[index] already, reuse the buffer/URB
348 * if the length is > buffer size. (So, transmitting
349 * large data amounts directly from the transfer buffer
350 * treats the buffer as a ring buffer. However, we need
351 * to sync in this case.)
352 */
353 if (fromuser || fromkern)
354 index = -1;
355 else if (len > sisusb->obufsize)
356 async = 0;
357
358 pipe = usb_sndbulkpipe(sisusb->sisusb_dev, ep);
359
360 do {
361 passsize = thispass = (sisusb->obufsize < count) ?
362 sisusb->obufsize : count;
363
364 if (index < 0)
365 index = sisusb_get_free_outbuf(sisusb);
366
367 if (index < 0)
368 return -EIO;
369
370 buffer = sisusb->obuf[index];
371
372 if (fromuser) {
373
374 if (copy_from_user(buffer, userbuffer, passsize))
375 return -EFAULT;
376
377 userbuffer += passsize;
378
379 } else if (fromkern) {
380
381 memcpy(buffer, kernbuffer, passsize);
382 kernbuffer += passsize;
383
384 }
385
386 retry = 5;
387 while (thispass) {
388
389 if (!sisusb->sisusb_dev)
390 return -ENODEV;
391
392 result = sisusb_bulkout_msg(sisusb, index, pipe,
393 buffer, thispass, &transferred_len,
394 async ? 0 : 5 * HZ, tflags);
395
396 if (result == -ETIMEDOUT) {
397
398 /* Will not happen if async */
399 if (!retry--)
400 return -ETIME;
401
402 continue;
403 }
404
405 if ((result == 0) && !async && transferred_len) {
406
407 thispass -= transferred_len;
408 buffer += transferred_len;
409
410 } else
411 break;
412 }
413
414 if (result)
415 return result;
416
417 (*bytes_written) += passsize;
418 count -= passsize;
419
420 /* Force new allocation in next iteration */
421 if (fromuser || fromkern)
422 index = -1;
423
424 } while (count > 0);
425
426 if (async) {
427 #ifdef SISUSB_DONTSYNC
428 (*bytes_written) = len;
429 /* Some URBs/buffers might be busy */
430 #else
431 sisusb_wait_all_out_complete(sisusb);
432 (*bytes_written) = transferred_len;
433 /* All URBs and all buffers are available */
434 #endif
435 }
436
437 return ((*bytes_written) == len) ? 0 : -EIO;
438 }
439
440 /* Receive a bulk message of variable size
441 *
442 * To copy the data to userspace, give pointer to "userbuffer",
443 * to copy to kernel memory, give "kernbuffer". One of them
444 * MUST be set. (There is no technique for letting the caller
445 * read directly from the ibuf.)
446 *
447 */
448
449 static int sisusb_recv_bulk_msg(struct sisusb_usb_data *sisusb, int ep, int len,
450 void *kernbuffer, char __user *userbuffer, ssize_t *bytes_read,
451 unsigned int tflags)
452 {
453 int result = 0, retry, count = len;
454 int bufsize, thispass, transferred_len;
455 unsigned int pipe;
456 char *buffer;
457
458 (*bytes_read) = 0;
459
460 /* Sanity check */
461 if (!sisusb || !sisusb->present || !sisusb->sisusb_dev)
462 return -ENODEV;
463
464 pipe = usb_rcvbulkpipe(sisusb->sisusb_dev, ep);
465 buffer = sisusb->ibuf;
466 bufsize = sisusb->ibufsize;
467
468 retry = 5;
469
470 #ifdef SISUSB_DONTSYNC
471 if (!(sisusb_wait_all_out_complete(sisusb)))
472 return -EIO;
473 #endif
474
475 while (count > 0) {
476
477 if (!sisusb->sisusb_dev)
478 return -ENODEV;
479
480 thispass = (bufsize < count) ? bufsize : count;
481
482 result = sisusb_bulkin_msg(sisusb, pipe, buffer, thispass,
483 &transferred_len, 5 * HZ, tflags);
484
485 if (transferred_len)
486 thispass = transferred_len;
487
488 else if (result == -ETIMEDOUT) {
489
490 if (!retry--)
491 return -ETIME;
492
493 continue;
494
495 } else
496 return -EIO;
497
498
499 if (thispass) {
500
501 (*bytes_read) += thispass;
502 count -= thispass;
503
504 if (userbuffer) {
505
506 if (copy_to_user(userbuffer, buffer, thispass))
507 return -EFAULT;
508
509 userbuffer += thispass;
510
511 } else {
512
513 memcpy(kernbuffer, buffer, thispass);
514 kernbuffer += thispass;
515
516 }
517
518 }
519
520 }
521
522 return ((*bytes_read) == len) ? 0 : -EIO;
523 }
524
525 static int sisusb_send_packet(struct sisusb_usb_data *sisusb, int len,
526 struct sisusb_packet *packet)
527 {
528 int ret;
529 ssize_t bytes_transferred = 0;
530 __le32 tmp;
531
532 if (len == 6)
533 packet->data = 0;
534
535 #ifdef SISUSB_DONTSYNC
536 if (!(sisusb_wait_all_out_complete(sisusb)))
537 return 1;
538 #endif
539
540 /* Eventually correct endianness */
541 SISUSB_CORRECT_ENDIANNESS_PACKET(packet);
542
543 /* 1. send the packet */
544 ret = sisusb_send_bulk_msg(sisusb, SISUSB_EP_GFX_OUT, len,
545 (char *)packet, NULL, 0, &bytes_transferred, 0, 0);
546
547 if ((ret == 0) && (len == 6)) {
548
549 /* 2. if packet len == 6, it means we read, so wait for 32bit
550 * return value and write it to packet->data
551 */
552 ret = sisusb_recv_bulk_msg(sisusb, SISUSB_EP_GFX_IN, 4,
553 (char *)&tmp, NULL, &bytes_transferred, 0);
554
555 packet->data = le32_to_cpu(tmp);
556 }
557
558 return ret;
559 }
560
561 static int sisusb_send_bridge_packet(struct sisusb_usb_data *sisusb, int len,
562 struct sisusb_packet *packet, unsigned int tflags)
563 {
564 int ret;
565 ssize_t bytes_transferred = 0;
566 __le32 tmp;
567
568 if (len == 6)
569 packet->data = 0;
570
571 #ifdef SISUSB_DONTSYNC
572 if (!(sisusb_wait_all_out_complete(sisusb)))
573 return 1;
574 #endif
575
576 /* Eventually correct endianness */
577 SISUSB_CORRECT_ENDIANNESS_PACKET(packet);
578
579 /* 1. send the packet */
580 ret = sisusb_send_bulk_msg(sisusb, SISUSB_EP_BRIDGE_OUT, len,
581 (char *)packet, NULL, 0, &bytes_transferred, tflags, 0);
582
583 if ((ret == 0) && (len == 6)) {
584
585 /* 2. if packet len == 6, it means we read, so wait for 32bit
586 * return value and write it to packet->data
587 */
588 ret = sisusb_recv_bulk_msg(sisusb, SISUSB_EP_BRIDGE_IN, 4,
589 (char *)&tmp, NULL, &bytes_transferred, 0);
590
591 packet->data = le32_to_cpu(tmp);
592 }
593
594 return ret;
595 }
596
597 /* access video memory and mmio (return 0 on success) */
598
599 /* Low level */
600
601 /* The following routines assume being used to transfer byte, word,
602 * long etc.
603 * This means that
604 * - the write routines expect "data" in machine endianness format.
605 * The data will be converted to leXX in sisusb_xxx_packet.
606 * - the read routines can expect read data in machine-endianess.
607 */
608
609 static int sisusb_write_memio_byte(struct sisusb_usb_data *sisusb, int type,
610 u32 addr, u8 data)
611 {
612 struct sisusb_packet packet;
613 int ret;
614
615 packet.header = (1 << (addr & 3)) | (type << 6);
616 packet.address = addr & ~3;
617 packet.data = data << ((addr & 3) << 3);
618 ret = sisusb_send_packet(sisusb, 10, &packet);
619 return ret;
620 }
621
622 static int sisusb_write_memio_word(struct sisusb_usb_data *sisusb, int type,
623 u32 addr, u16 data)
624 {
625 struct sisusb_packet packet;
626 int ret = 0;
627
628 packet.address = addr & ~3;
629
630 switch (addr & 3) {
631 case 0:
632 packet.header = (type << 6) | 0x0003;
633 packet.data = (u32)data;
634 ret = sisusb_send_packet(sisusb, 10, &packet);
635 break;
636 case 1:
637 packet.header = (type << 6) | 0x0006;
638 packet.data = (u32)data << 8;
639 ret = sisusb_send_packet(sisusb, 10, &packet);
640 break;
641 case 2:
642 packet.header = (type << 6) | 0x000c;
643 packet.data = (u32)data << 16;
644 ret = sisusb_send_packet(sisusb, 10, &packet);
645 break;
646 case 3:
647 packet.header = (type << 6) | 0x0008;
648 packet.data = (u32)data << 24;
649 ret = sisusb_send_packet(sisusb, 10, &packet);
650 packet.header = (type << 6) | 0x0001;
651 packet.address = (addr & ~3) + 4;
652 packet.data = (u32)data >> 8;
653 ret |= sisusb_send_packet(sisusb, 10, &packet);
654 }
655
656 return ret;
657 }
658
659 static int sisusb_write_memio_24bit(struct sisusb_usb_data *sisusb, int type,
660 u32 addr, u32 data)
661 {
662 struct sisusb_packet packet;
663 int ret = 0;
664
665 packet.address = addr & ~3;
666
667 switch (addr & 3) {
668 case 0:
669 packet.header = (type << 6) | 0x0007;
670 packet.data = data & 0x00ffffff;
671 ret = sisusb_send_packet(sisusb, 10, &packet);
672 break;
673 case 1:
674 packet.header = (type << 6) | 0x000e;
675 packet.data = data << 8;
676 ret = sisusb_send_packet(sisusb, 10, &packet);
677 break;
678 case 2:
679 packet.header = (type << 6) | 0x000c;
680 packet.data = data << 16;
681 ret = sisusb_send_packet(sisusb, 10, &packet);
682 packet.header = (type << 6) | 0x0001;
683 packet.address = (addr & ~3) + 4;
684 packet.data = (data >> 16) & 0x00ff;
685 ret |= sisusb_send_packet(sisusb, 10, &packet);
686 break;
687 case 3:
688 packet.header = (type << 6) | 0x0008;
689 packet.data = data << 24;
690 ret = sisusb_send_packet(sisusb, 10, &packet);
691 packet.header = (type << 6) | 0x0003;
692 packet.address = (addr & ~3) + 4;
693 packet.data = (data >> 8) & 0xffff;
694 ret |= sisusb_send_packet(sisusb, 10, &packet);
695 }
696
697 return ret;
698 }
699
700 static int sisusb_write_memio_long(struct sisusb_usb_data *sisusb, int type,
701 u32 addr, u32 data)
702 {
703 struct sisusb_packet packet;
704 int ret = 0;
705
706 packet.address = addr & ~3;
707
708 switch (addr & 3) {
709 case 0:
710 packet.header = (type << 6) | 0x000f;
711 packet.data = data;
712 ret = sisusb_send_packet(sisusb, 10, &packet);
713 break;
714 case 1:
715 packet.header = (type << 6) | 0x000e;
716 packet.data = data << 8;
717 ret = sisusb_send_packet(sisusb, 10, &packet);
718 packet.header = (type << 6) | 0x0001;
719 packet.address = (addr & ~3) + 4;
720 packet.data = data >> 24;
721 ret |= sisusb_send_packet(sisusb, 10, &packet);
722 break;
723 case 2:
724 packet.header = (type << 6) | 0x000c;
725 packet.data = data << 16;
726 ret = sisusb_send_packet(sisusb, 10, &packet);
727 packet.header = (type << 6) | 0x0003;
728 packet.address = (addr & ~3) + 4;
729 packet.data = data >> 16;
730 ret |= sisusb_send_packet(sisusb, 10, &packet);
731 break;
732 case 3:
733 packet.header = (type << 6) | 0x0008;
734 packet.data = data << 24;
735 ret = sisusb_send_packet(sisusb, 10, &packet);
736 packet.header = (type << 6) | 0x0007;
737 packet.address = (addr & ~3) + 4;
738 packet.data = data >> 8;
739 ret |= sisusb_send_packet(sisusb, 10, &packet);
740 }
741
742 return ret;
743 }
744
745 /* The xxx_bulk routines copy a buffer of variable size. They treat the
746 * buffer as chars, therefore lsb/msb has to be corrected if using the
747 * byte/word/long/etc routines for speed-up
748 *
749 * If data is from userland, set "userbuffer" (and clear "kernbuffer"),
750 * if data is in kernel space, set "kernbuffer" (and clear "userbuffer");
751 * if neither "kernbuffer" nor "userbuffer" are given, it is assumed
752 * that the data already is in the transfer buffer "sisusb->obuf[index]".
753 */
754
755 static int sisusb_write_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
756 char *kernbuffer, int length, const char __user *userbuffer,
757 int index, ssize_t *bytes_written)
758 {
759 struct sisusb_packet packet;
760 int ret = 0;
761 static int msgcount;
762 u8 swap8, fromkern = kernbuffer ? 1 : 0;
763 u16 swap16;
764 u32 swap32, flag = (length >> 28) & 1;
765 char buf[4];
766
767 /* if neither kernbuffer not userbuffer are given, assume
768 * data in obuf
769 */
770 if (!fromkern && !userbuffer)
771 kernbuffer = sisusb->obuf[index];
772
773 (*bytes_written = 0);
774
775 length &= 0x00ffffff;
776
777 while (length) {
778 switch (length) {
779 case 1:
780 if (userbuffer) {
781 if (get_user(swap8, (u8 __user *)userbuffer))
782 return -EFAULT;
783 } else
784 swap8 = kernbuffer[0];
785
786 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM,
787 addr, swap8);
788
789 if (!ret)
790 (*bytes_written)++;
791
792 return ret;
793
794 case 2:
795 if (userbuffer) {
796 if (get_user(swap16, (u16 __user *)userbuffer))
797 return -EFAULT;
798 } else
799 swap16 = *((u16 *)kernbuffer);
800
801 ret = sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
802 addr, swap16);
803
804 if (!ret)
805 (*bytes_written) += 2;
806
807 return ret;
808
809 case 3:
810 if (userbuffer) {
811 if (copy_from_user(&buf, userbuffer, 3))
812 return -EFAULT;
813 #ifdef __BIG_ENDIAN
814 swap32 = (buf[0] << 16) |
815 (buf[1] << 8) |
816 buf[2];
817 #else
818 swap32 = (buf[2] << 16) |
819 (buf[1] << 8) |
820 buf[0];
821 #endif
822 } else
823 #ifdef __BIG_ENDIAN
824 swap32 = (kernbuffer[0] << 16) |
825 (kernbuffer[1] << 8) |
826 kernbuffer[2];
827 #else
828 swap32 = (kernbuffer[2] << 16) |
829 (kernbuffer[1] << 8) |
830 kernbuffer[0];
831 #endif
832
833 ret = sisusb_write_memio_24bit(sisusb, SISUSB_TYPE_MEM,
834 addr, swap32);
835
836 if (!ret)
837 (*bytes_written) += 3;
838
839 return ret;
840
841 case 4:
842 if (userbuffer) {
843 if (get_user(swap32, (u32 __user *)userbuffer))
844 return -EFAULT;
845 } else
846 swap32 = *((u32 *)kernbuffer);
847
848 ret = sisusb_write_memio_long(sisusb, SISUSB_TYPE_MEM,
849 addr, swap32);
850 if (!ret)
851 (*bytes_written) += 4;
852
853 return ret;
854
855 default:
856 if ((length & ~3) > 0x10000) {
857
858 packet.header = 0x001f;
859 packet.address = 0x000001d4;
860 packet.data = addr;
861 ret = sisusb_send_bridge_packet(sisusb, 10,
862 &packet, 0);
863 packet.header = 0x001f;
864 packet.address = 0x000001d0;
865 packet.data = (length & ~3);
866 ret |= sisusb_send_bridge_packet(sisusb, 10,
867 &packet, 0);
868 packet.header = 0x001f;
869 packet.address = 0x000001c0;
870 packet.data = flag | 0x16;
871 ret |= sisusb_send_bridge_packet(sisusb, 10,
872 &packet, 0);
873 if (userbuffer) {
874 ret |= sisusb_send_bulk_msg(sisusb,
875 SISUSB_EP_GFX_LBULK_OUT,
876 (length & ~3),
877 NULL, userbuffer, 0,
878 bytes_written, 0, 1);
879 userbuffer += (*bytes_written);
880 } else if (fromkern) {
881 ret |= sisusb_send_bulk_msg(sisusb,
882 SISUSB_EP_GFX_LBULK_OUT,
883 (length & ~3),
884 kernbuffer, NULL, 0,
885 bytes_written, 0, 1);
886 kernbuffer += (*bytes_written);
887 } else {
888 ret |= sisusb_send_bulk_msg(sisusb,
889 SISUSB_EP_GFX_LBULK_OUT,
890 (length & ~3),
891 NULL, NULL, index,
892 bytes_written, 0, 1);
893 kernbuffer += ((*bytes_written) &
894 (sisusb->obufsize-1));
895 }
896
897 } else {
898
899 packet.header = 0x001f;
900 packet.address = 0x00000194;
901 packet.data = addr;
902 ret = sisusb_send_bridge_packet(sisusb, 10,
903 &packet, 0);
904 packet.header = 0x001f;
905 packet.address = 0x00000190;
906 packet.data = (length & ~3);
907 ret |= sisusb_send_bridge_packet(sisusb, 10,
908 &packet, 0);
909 if (sisusb->flagb0 != 0x16) {
910 packet.header = 0x001f;
911 packet.address = 0x00000180;
912 packet.data = flag | 0x16;
913 ret |= sisusb_send_bridge_packet(sisusb,
914 10, &packet, 0);
915 sisusb->flagb0 = 0x16;
916 }
917 if (userbuffer) {
918 ret |= sisusb_send_bulk_msg(sisusb,
919 SISUSB_EP_GFX_BULK_OUT,
920 (length & ~3),
921 NULL, userbuffer, 0,
922 bytes_written, 0, 1);
923 userbuffer += (*bytes_written);
924 } else if (fromkern) {
925 ret |= sisusb_send_bulk_msg(sisusb,
926 SISUSB_EP_GFX_BULK_OUT,
927 (length & ~3),
928 kernbuffer, NULL, 0,
929 bytes_written, 0, 1);
930 kernbuffer += (*bytes_written);
931 } else {
932 ret |= sisusb_send_bulk_msg(sisusb,
933 SISUSB_EP_GFX_BULK_OUT,
934 (length & ~3),
935 NULL, NULL, index,
936 bytes_written, 0, 1);
937 kernbuffer += ((*bytes_written) &
938 (sisusb->obufsize-1));
939 }
940 }
941 if (ret) {
942 msgcount++;
943 if (msgcount < 500)
944 dev_err(&sisusb->sisusb_dev->dev,
945 "Wrote %zd of %d bytes, error %d\n",
946 *bytes_written, length,
947 ret);
948 else if (msgcount == 500)
949 dev_err(&sisusb->sisusb_dev->dev,
950 "Too many errors, logging stopped\n");
951 }
952 addr += (*bytes_written);
953 length -= (*bytes_written);
954 }
955
956 if (ret)
957 break;
958
959 }
960
961 return ret ? -EIO : 0;
962 }
963
964 /* Remember: Read data in packet is in machine-endianess! So for
965 * byte, word, 24bit, long no endian correction is necessary.
966 */
967
968 static int sisusb_read_memio_byte(struct sisusb_usb_data *sisusb, int type,
969 u32 addr, u8 *data)
970 {
971 struct sisusb_packet packet;
972 int ret;
973
974 CLEARPACKET(&packet);
975 packet.header = (1 << (addr & 3)) | (type << 6);
976 packet.address = addr & ~3;
977 ret = sisusb_send_packet(sisusb, 6, &packet);
978 *data = (u8)(packet.data >> ((addr & 3) << 3));
979 return ret;
980 }
981
982 static int sisusb_read_memio_word(struct sisusb_usb_data *sisusb, int type,
983 u32 addr, u16 *data)
984 {
985 struct sisusb_packet packet;
986 int ret = 0;
987
988 CLEARPACKET(&packet);
989
990 packet.address = addr & ~3;
991
992 switch (addr & 3) {
993 case 0:
994 packet.header = (type << 6) | 0x0003;
995 ret = sisusb_send_packet(sisusb, 6, &packet);
996 *data = (u16)(packet.data);
997 break;
998 case 1:
999 packet.header = (type << 6) | 0x0006;
1000 ret = sisusb_send_packet(sisusb, 6, &packet);
1001 *data = (u16)(packet.data >> 8);
1002 break;
1003 case 2:
1004 packet.header = (type << 6) | 0x000c;
1005 ret = sisusb_send_packet(sisusb, 6, &packet);
1006 *data = (u16)(packet.data >> 16);
1007 break;
1008 case 3:
1009 packet.header = (type << 6) | 0x0008;
1010 ret = sisusb_send_packet(sisusb, 6, &packet);
1011 *data = (u16)(packet.data >> 24);
1012 packet.header = (type << 6) | 0x0001;
1013 packet.address = (addr & ~3) + 4;
1014 ret |= sisusb_send_packet(sisusb, 6, &packet);
1015 *data |= (u16)(packet.data << 8);
1016 }
1017
1018 return ret;
1019 }
1020
1021 static int sisusb_read_memio_24bit(struct sisusb_usb_data *sisusb, int type,
1022 u32 addr, u32 *data)
1023 {
1024 struct sisusb_packet packet;
1025 int ret = 0;
1026
1027 packet.address = addr & ~3;
1028
1029 switch (addr & 3) {
1030 case 0:
1031 packet.header = (type << 6) | 0x0007;
1032 ret = sisusb_send_packet(sisusb, 6, &packet);
1033 *data = packet.data & 0x00ffffff;
1034 break;
1035 case 1:
1036 packet.header = (type << 6) | 0x000e;
1037 ret = sisusb_send_packet(sisusb, 6, &packet);
1038 *data = packet.data >> 8;
1039 break;
1040 case 2:
1041 packet.header = (type << 6) | 0x000c;
1042 ret = sisusb_send_packet(sisusb, 6, &packet);
1043 *data = packet.data >> 16;
1044 packet.header = (type << 6) | 0x0001;
1045 packet.address = (addr & ~3) + 4;
1046 ret |= sisusb_send_packet(sisusb, 6, &packet);
1047 *data |= ((packet.data & 0xff) << 16);
1048 break;
1049 case 3:
1050 packet.header = (type << 6) | 0x0008;
1051 ret = sisusb_send_packet(sisusb, 6, &packet);
1052 *data = packet.data >> 24;
1053 packet.header = (type << 6) | 0x0003;
1054 packet.address = (addr & ~3) + 4;
1055 ret |= sisusb_send_packet(sisusb, 6, &packet);
1056 *data |= ((packet.data & 0xffff) << 8);
1057 }
1058
1059 return ret;
1060 }
1061
1062 static int sisusb_read_memio_long(struct sisusb_usb_data *sisusb, int type,
1063 u32 addr, u32 *data)
1064 {
1065 struct sisusb_packet packet;
1066 int ret = 0;
1067
1068 packet.address = addr & ~3;
1069
1070 switch (addr & 3) {
1071 case 0:
1072 packet.header = (type << 6) | 0x000f;
1073 ret = sisusb_send_packet(sisusb, 6, &packet);
1074 *data = packet.data;
1075 break;
1076 case 1:
1077 packet.header = (type << 6) | 0x000e;
1078 ret = sisusb_send_packet(sisusb, 6, &packet);
1079 *data = packet.data >> 8;
1080 packet.header = (type << 6) | 0x0001;
1081 packet.address = (addr & ~3) + 4;
1082 ret |= sisusb_send_packet(sisusb, 6, &packet);
1083 *data |= (packet.data << 24);
1084 break;
1085 case 2:
1086 packet.header = (type << 6) | 0x000c;
1087 ret = sisusb_send_packet(sisusb, 6, &packet);
1088 *data = packet.data >> 16;
1089 packet.header = (type << 6) | 0x0003;
1090 packet.address = (addr & ~3) + 4;
1091 ret |= sisusb_send_packet(sisusb, 6, &packet);
1092 *data |= (packet.data << 16);
1093 break;
1094 case 3:
1095 packet.header = (type << 6) | 0x0008;
1096 ret = sisusb_send_packet(sisusb, 6, &packet);
1097 *data = packet.data >> 24;
1098 packet.header = (type << 6) | 0x0007;
1099 packet.address = (addr & ~3) + 4;
1100 ret |= sisusb_send_packet(sisusb, 6, &packet);
1101 *data |= (packet.data << 8);
1102 }
1103
1104 return ret;
1105 }
1106
1107 static int sisusb_read_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
1108 char *kernbuffer, int length, char __user *userbuffer,
1109 ssize_t *bytes_read)
1110 {
1111 int ret = 0;
1112 char buf[4];
1113 u16 swap16;
1114 u32 swap32;
1115
1116 (*bytes_read = 0);
1117
1118 length &= 0x00ffffff;
1119
1120 while (length) {
1121 switch (length) {
1122 case 1:
1123 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM,
1124 addr, &buf[0]);
1125 if (!ret) {
1126 (*bytes_read)++;
1127 if (userbuffer) {
1128 if (put_user(buf[0], (u8 __user *)userbuffer))
1129 return -EFAULT;
1130 } else
1131 kernbuffer[0] = buf[0];
1132 }
1133 return ret;
1134
1135 case 2:
1136 ret |= sisusb_read_memio_word(sisusb, SISUSB_TYPE_MEM,
1137 addr, &swap16);
1138 if (!ret) {
1139 (*bytes_read) += 2;
1140 if (userbuffer) {
1141 if (put_user(swap16, (u16 __user *)userbuffer))
1142 return -EFAULT;
1143 } else {
1144 *((u16 *)kernbuffer) = swap16;
1145 }
1146 }
1147 return ret;
1148
1149 case 3:
1150 ret |= sisusb_read_memio_24bit(sisusb, SISUSB_TYPE_MEM,
1151 addr, &swap32);
1152 if (!ret) {
1153 (*bytes_read) += 3;
1154 #ifdef __BIG_ENDIAN
1155 buf[0] = (swap32 >> 16) & 0xff;
1156 buf[1] = (swap32 >> 8) & 0xff;
1157 buf[2] = swap32 & 0xff;
1158 #else
1159 buf[2] = (swap32 >> 16) & 0xff;
1160 buf[1] = (swap32 >> 8) & 0xff;
1161 buf[0] = swap32 & 0xff;
1162 #endif
1163 if (userbuffer) {
1164 if (copy_to_user(userbuffer,
1165 &buf[0], 3))
1166 return -EFAULT;
1167 } else {
1168 kernbuffer[0] = buf[0];
1169 kernbuffer[1] = buf[1];
1170 kernbuffer[2] = buf[2];
1171 }
1172 }
1173 return ret;
1174
1175 default:
1176 ret |= sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM,
1177 addr, &swap32);
1178 if (!ret) {
1179 (*bytes_read) += 4;
1180 if (userbuffer) {
1181 if (put_user(swap32, (u32 __user *)userbuffer))
1182 return -EFAULT;
1183
1184 userbuffer += 4;
1185 } else {
1186 *((u32 *)kernbuffer) = swap32;
1187 kernbuffer += 4;
1188 }
1189 addr += 4;
1190 length -= 4;
1191 }
1192 }
1193 if (ret)
1194 break;
1195 }
1196
1197 return ret;
1198 }
1199
1200 /* High level: Gfx (indexed) register access */
1201
1202 #ifdef INCL_SISUSB_CON
1203 int sisusb_setreg(struct sisusb_usb_data *sisusb, int port, u8 data)
1204 {
1205 return sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, data);
1206 }
1207
1208 int sisusb_getreg(struct sisusb_usb_data *sisusb, int port, u8 *data)
1209 {
1210 return sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port, data);
1211 }
1212 #endif
1213
1214 int sisusb_setidxreg(struct sisusb_usb_data *sisusb, int port,
1215 u8 index, u8 data)
1216 {
1217 int ret;
1218
1219 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, index);
1220 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, data);
1221 return ret;
1222 }
1223
1224 int sisusb_getidxreg(struct sisusb_usb_data *sisusb, int port,
1225 u8 index, u8 *data)
1226 {
1227 int ret;
1228
1229 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, index);
1230 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, data);
1231 return ret;
1232 }
1233
1234 int sisusb_setidxregandor(struct sisusb_usb_data *sisusb, int port, u8 idx,
1235 u8 myand, u8 myor)
1236 {
1237 int ret;
1238 u8 tmp;
1239
1240 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, idx);
1241 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, &tmp);
1242 tmp &= myand;
1243 tmp |= myor;
1244 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, tmp);
1245 return ret;
1246 }
1247
1248 static int sisusb_setidxregmask(struct sisusb_usb_data *sisusb,
1249 int port, u8 idx, u8 data, u8 mask)
1250 {
1251 int ret;
1252 u8 tmp;
1253
1254 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, idx);
1255 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, &tmp);
1256 tmp &= ~(mask);
1257 tmp |= (data & mask);
1258 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, tmp);
1259 return ret;
1260 }
1261
1262 int sisusb_setidxregor(struct sisusb_usb_data *sisusb, int port,
1263 u8 index, u8 myor)
1264 {
1265 return sisusb_setidxregandor(sisusb, port, index, 0xff, myor);
1266 }
1267
1268 int sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port,
1269 u8 idx, u8 myand)
1270 {
1271 return sisusb_setidxregandor(sisusb, port, idx, myand, 0x00);
1272 }
1273
1274 /* Write/read video ram */
1275
1276 #ifdef INCL_SISUSB_CON
1277 int sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data)
1278 {
1279 return sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data);
1280 }
1281
1282 int sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data)
1283 {
1284 return sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data);
1285 }
1286
1287 int sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
1288 u32 dest, int length)
1289 {
1290 size_t dummy;
1291
1292 return sisusb_write_mem_bulk(sisusb, dest, src, length,
1293 NULL, 0, &dummy);
1294 }
1295
1296 #ifdef SISUSBENDIANTEST
1297 static int sisusb_read_memory(struct sisusb_usb_data *sisusb, char *dest,
1298 u32 src, int length)
1299 {
1300 size_t dummy;
1301
1302 return sisusb_read_mem_bulk(sisusb, src, dest, length,
1303 NULL, &dummy);
1304 }
1305 #endif
1306 #endif
1307
1308 #ifdef SISUSBENDIANTEST
1309 static void sisusb_testreadwrite(struct sisusb_usb_data *sisusb)
1310 {
1311 static char srcbuffer[] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 };
1312 char destbuffer[10];
1313 int i, j;
1314
1315 sisusb_copy_memory(sisusb, srcbuffer, sisusb->vrambase, 7);
1316
1317 for (i = 1; i <= 7; i++) {
1318 dev_dbg(&sisusb->sisusb_dev->dev,
1319 "sisusb: rwtest %d bytes\n", i);
1320 sisusb_read_memory(sisusb, destbuffer, sisusb->vrambase, i);
1321 for (j = 0; j < i; j++) {
1322 dev_dbg(&sisusb->sisusb_dev->dev,
1323 "rwtest read[%d] = %x\n",
1324 j, destbuffer[j]);
1325 }
1326 }
1327 }
1328 #endif
1329
1330 /* access pci config registers (reg numbers 0, 4, 8, etc) */
1331
1332 static int sisusb_write_pci_config(struct sisusb_usb_data *sisusb,
1333 int regnum, u32 data)
1334 {
1335 struct sisusb_packet packet;
1336 int ret;
1337
1338 packet.header = 0x008f;
1339 packet.address = regnum | 0x10000;
1340 packet.data = data;
1341 ret = sisusb_send_packet(sisusb, 10, &packet);
1342 return ret;
1343 }
1344
1345 static int sisusb_read_pci_config(struct sisusb_usb_data *sisusb,
1346 int regnum, u32 *data)
1347 {
1348 struct sisusb_packet packet;
1349 int ret;
1350
1351 packet.header = 0x008f;
1352 packet.address = (u32)regnum | 0x10000;
1353 ret = sisusb_send_packet(sisusb, 6, &packet);
1354 *data = packet.data;
1355 return ret;
1356 }
1357
1358 /* Clear video RAM */
1359
1360 static int sisusb_clear_vram(struct sisusb_usb_data *sisusb,
1361 u32 address, int length)
1362 {
1363 int ret, i;
1364 ssize_t j;
1365
1366 if (address < sisusb->vrambase)
1367 return 1;
1368
1369 if (address >= sisusb->vrambase + sisusb->vramsize)
1370 return 1;
1371
1372 if (address + length > sisusb->vrambase + sisusb->vramsize)
1373 length = sisusb->vrambase + sisusb->vramsize - address;
1374
1375 if (length <= 0)
1376 return 0;
1377
1378 /* allocate free buffer/urb and clear the buffer */
1379 i = sisusb_alloc_outbuf(sisusb);
1380 if (i < 0)
1381 return -EBUSY;
1382
1383 memset(sisusb->obuf[i], 0, sisusb->obufsize);
1384
1385 /* We can write a length > buffer size here. The buffer
1386 * data will simply be re-used (like a ring-buffer).
1387 */
1388 ret = sisusb_write_mem_bulk(sisusb, address, NULL, length, NULL, i, &j);
1389
1390 /* Free the buffer/urb */
1391 sisusb_free_outbuf(sisusb, i);
1392
1393 return ret;
1394 }
1395
1396 /* Initialize the graphics core (return 0 on success)
1397 * This resets the graphics hardware and puts it into
1398 * a defined mode (640x480@60Hz)
1399 */
1400
1401 #define GETREG(r, d) sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
1402 #define SETREG(r, d) sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
1403 #define SETIREG(r, i, d) sisusb_setidxreg(sisusb, r, i, d)
1404 #define GETIREG(r, i, d) sisusb_getidxreg(sisusb, r, i, d)
1405 #define SETIREGOR(r, i, o) sisusb_setidxregor(sisusb, r, i, o)
1406 #define SETIREGAND(r, i, a) sisusb_setidxregand(sisusb, r, i, a)
1407 #define SETIREGANDOR(r, i, a, o) sisusb_setidxregandor(sisusb, r, i, a, o)
1408 #define READL(a, d) sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
1409 #define WRITEL(a, d) sisusb_write_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
1410 #define READB(a, d) sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
1411 #define WRITEB(a, d) sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
1412
1413 static int sisusb_triggersr16(struct sisusb_usb_data *sisusb, u8 ramtype)
1414 {
1415 int ret;
1416 u8 tmp8;
1417
1418 ret = GETIREG(SISSR, 0x16, &tmp8);
1419 if (ramtype <= 1) {
1420 tmp8 &= 0x3f;
1421 ret |= SETIREG(SISSR, 0x16, tmp8);
1422 tmp8 |= 0x80;
1423 ret |= SETIREG(SISSR, 0x16, tmp8);
1424 } else {
1425 tmp8 |= 0xc0;
1426 ret |= SETIREG(SISSR, 0x16, tmp8);
1427 tmp8 &= 0x0f;
1428 ret |= SETIREG(SISSR, 0x16, tmp8);
1429 tmp8 |= 0x80;
1430 ret |= SETIREG(SISSR, 0x16, tmp8);
1431 tmp8 &= 0x0f;
1432 ret |= SETIREG(SISSR, 0x16, tmp8);
1433 tmp8 |= 0xd0;
1434 ret |= SETIREG(SISSR, 0x16, tmp8);
1435 tmp8 &= 0x0f;
1436 ret |= SETIREG(SISSR, 0x16, tmp8);
1437 tmp8 |= 0xa0;
1438 ret |= SETIREG(SISSR, 0x16, tmp8);
1439 }
1440 return ret;
1441 }
1442
1443 static int sisusb_getbuswidth(struct sisusb_usb_data *sisusb,
1444 int *bw, int *chab)
1445 {
1446 int ret;
1447 u8 ramtype, done = 0;
1448 u32 t0, t1, t2, t3;
1449 u32 ramptr = SISUSB_PCI_MEMBASE;
1450
1451 ret = GETIREG(SISSR, 0x3a, &ramtype);
1452 ramtype &= 3;
1453
1454 ret |= SETIREG(SISSR, 0x13, 0x00);
1455
1456 if (ramtype <= 1) {
1457 ret |= SETIREG(SISSR, 0x14, 0x12);
1458 ret |= SETIREGAND(SISSR, 0x15, 0xef);
1459 } else {
1460 ret |= SETIREG(SISSR, 0x14, 0x02);
1461 }
1462
1463 ret |= sisusb_triggersr16(sisusb, ramtype);
1464 ret |= WRITEL(ramptr + 0, 0x01234567);
1465 ret |= WRITEL(ramptr + 4, 0x456789ab);
1466 ret |= WRITEL(ramptr + 8, 0x89abcdef);
1467 ret |= WRITEL(ramptr + 12, 0xcdef0123);
1468 ret |= WRITEL(ramptr + 16, 0x55555555);
1469 ret |= WRITEL(ramptr + 20, 0x55555555);
1470 ret |= WRITEL(ramptr + 24, 0xffffffff);
1471 ret |= WRITEL(ramptr + 28, 0xffffffff);
1472 ret |= READL(ramptr + 0, &t0);
1473 ret |= READL(ramptr + 4, &t1);
1474 ret |= READL(ramptr + 8, &t2);
1475 ret |= READL(ramptr + 12, &t3);
1476
1477 if (ramtype <= 1) {
1478
1479 *chab = 0; *bw = 64;
1480
1481 if ((t3 != 0xcdef0123) || (t2 != 0x89abcdef)) {
1482 if ((t1 == 0x456789ab) && (t0 == 0x01234567)) {
1483 *chab = 0; *bw = 64;
1484 ret |= SETIREGAND(SISSR, 0x14, 0xfd);
1485 }
1486 }
1487 if ((t1 != 0x456789ab) || (t0 != 0x01234567)) {
1488 *chab = 1; *bw = 64;
1489 ret |= SETIREGANDOR(SISSR, 0x14, 0xfc, 0x01);
1490
1491 ret |= sisusb_triggersr16(sisusb, ramtype);
1492 ret |= WRITEL(ramptr + 0, 0x89abcdef);
1493 ret |= WRITEL(ramptr + 4, 0xcdef0123);
1494 ret |= WRITEL(ramptr + 8, 0x55555555);
1495 ret |= WRITEL(ramptr + 12, 0x55555555);
1496 ret |= WRITEL(ramptr + 16, 0xaaaaaaaa);
1497 ret |= WRITEL(ramptr + 20, 0xaaaaaaaa);
1498 ret |= READL(ramptr + 4, &t1);
1499
1500 if (t1 != 0xcdef0123) {
1501 *bw = 32;
1502 ret |= SETIREGOR(SISSR, 0x15, 0x10);
1503 }
1504 }
1505
1506 } else {
1507
1508 *chab = 0; *bw = 64; /* default: cha, bw = 64 */
1509
1510 done = 0;
1511
1512 if (t1 == 0x456789ab) {
1513 if (t0 == 0x01234567) {
1514 *chab = 0; *bw = 64;
1515 done = 1;
1516 }
1517 } else {
1518 if (t0 == 0x01234567) {
1519 *chab = 0; *bw = 32;
1520 ret |= SETIREG(SISSR, 0x14, 0x00);
1521 done = 1;
1522 }
1523 }
1524
1525 if (!done) {
1526 ret |= SETIREG(SISSR, 0x14, 0x03);
1527 ret |= sisusb_triggersr16(sisusb, ramtype);
1528
1529 ret |= WRITEL(ramptr + 0, 0x01234567);
1530 ret |= WRITEL(ramptr + 4, 0x456789ab);
1531 ret |= WRITEL(ramptr + 8, 0x89abcdef);
1532 ret |= WRITEL(ramptr + 12, 0xcdef0123);
1533 ret |= WRITEL(ramptr + 16, 0x55555555);
1534 ret |= WRITEL(ramptr + 20, 0x55555555);
1535 ret |= WRITEL(ramptr + 24, 0xffffffff);
1536 ret |= WRITEL(ramptr + 28, 0xffffffff);
1537 ret |= READL(ramptr + 0, &t0);
1538 ret |= READL(ramptr + 4, &t1);
1539
1540 if (t1 == 0x456789ab) {
1541 if (t0 == 0x01234567) {
1542 *chab = 1; *bw = 64;
1543 return ret;
1544 } /* else error */
1545 } else {
1546 if (t0 == 0x01234567) {
1547 *chab = 1; *bw = 32;
1548 ret |= SETIREG(SISSR, 0x14, 0x01);
1549 } /* else error */
1550 }
1551 }
1552 }
1553 return ret;
1554 }
1555
1556 static int sisusb_verify_mclk(struct sisusb_usb_data *sisusb)
1557 {
1558 int ret = 0;
1559 u32 ramptr = SISUSB_PCI_MEMBASE;
1560 u8 tmp1, tmp2, i, j;
1561
1562 ret |= WRITEB(ramptr, 0xaa);
1563 ret |= WRITEB(ramptr + 16, 0x55);
1564 ret |= READB(ramptr, &tmp1);
1565 ret |= READB(ramptr + 16, &tmp2);
1566 if ((tmp1 != 0xaa) || (tmp2 != 0x55)) {
1567 for (i = 0, j = 16; i < 2; i++, j += 16) {
1568 ret |= GETIREG(SISSR, 0x21, &tmp1);
1569 ret |= SETIREGAND(SISSR, 0x21, (tmp1 & 0xfb));
1570 ret |= SETIREGOR(SISSR, 0x3c, 0x01); /* not on 330 */
1571 ret |= SETIREGAND(SISSR, 0x3c, 0xfe); /* not on 330 */
1572 ret |= SETIREG(SISSR, 0x21, tmp1);
1573 ret |= WRITEB(ramptr + 16 + j, j);
1574 ret |= READB(ramptr + 16 + j, &tmp1);
1575 if (tmp1 == j) {
1576 ret |= WRITEB(ramptr + j, j);
1577 break;
1578 }
1579 }
1580 }
1581 return ret;
1582 }
1583
1584 static int sisusb_set_rank(struct sisusb_usb_data *sisusb, int *iret,
1585 int index, u8 rankno, u8 chab, const u8 dramtype[][5], int bw)
1586 {
1587 int ret = 0, ranksize;
1588 u8 tmp;
1589
1590 *iret = 0;
1591
1592 if ((rankno == 2) && (dramtype[index][0] == 2))
1593 return ret;
1594
1595 ranksize = dramtype[index][3] / 2 * bw / 32;
1596
1597 if ((ranksize * rankno) > 128)
1598 return ret;
1599
1600 tmp = 0;
1601 while ((ranksize >>= 1) > 0)
1602 tmp += 0x10;
1603
1604 tmp |= ((rankno - 1) << 2);
1605 tmp |= ((bw / 64) & 0x02);
1606 tmp |= (chab & 0x01);
1607
1608 ret = SETIREG(SISSR, 0x14, tmp);
1609 ret |= sisusb_triggersr16(sisusb, 0); /* sic! */
1610
1611 *iret = 1;
1612
1613 return ret;
1614 }
1615
1616 static int sisusb_check_rbc(struct sisusb_usb_data *sisusb, int *iret,
1617 u32 inc, int testn)
1618 {
1619 int ret = 0, i;
1620 u32 j, tmp;
1621
1622 *iret = 0;
1623
1624 for (i = 0, j = 0; i < testn; i++) {
1625 ret |= WRITEL(sisusb->vrambase + j, j);
1626 j += inc;
1627 }
1628
1629 for (i = 0, j = 0; i < testn; i++) {
1630 ret |= READL(sisusb->vrambase + j, &tmp);
1631 if (tmp != j)
1632 return ret;
1633
1634 j += inc;
1635 }
1636
1637 *iret = 1;
1638 return ret;
1639 }
1640
1641 static int sisusb_check_ranks(struct sisusb_usb_data *sisusb,
1642 int *iret, int rankno, int idx, int bw, const u8 rtype[][5])
1643 {
1644 int ret = 0, i, i2ret;
1645 u32 inc;
1646
1647 *iret = 0;
1648
1649 for (i = rankno; i >= 1; i--) {
1650 inc = 1 << (rtype[idx][2] + rtype[idx][1] + rtype[idx][0] +
1651 bw / 64 + i);
1652 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
1653 if (!i2ret)
1654 return ret;
1655 }
1656
1657 inc = 1 << (rtype[idx][2] + bw / 64 + 2);
1658 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 4);
1659 if (!i2ret)
1660 return ret;
1661
1662 inc = 1 << (10 + bw / 64);
1663 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
1664 if (!i2ret)
1665 return ret;
1666
1667 *iret = 1;
1668 return ret;
1669 }
1670
1671 static int sisusb_get_sdram_size(struct sisusb_usb_data *sisusb, int *iret,
1672 int bw, int chab)
1673 {
1674 int ret = 0, i2ret = 0, i, j;
1675 static const u8 sdramtype[13][5] = {
1676 { 2, 12, 9, 64, 0x35 },
1677 { 1, 13, 9, 64, 0x44 },
1678 { 2, 12, 8, 32, 0x31 },
1679 { 2, 11, 9, 32, 0x25 },
1680 { 1, 12, 9, 32, 0x34 },
1681 { 1, 13, 8, 32, 0x40 },
1682 { 2, 11, 8, 16, 0x21 },
1683 { 1, 12, 8, 16, 0x30 },
1684 { 1, 11, 9, 16, 0x24 },
1685 { 1, 11, 8, 8, 0x20 },
1686 { 2, 9, 8, 4, 0x01 },
1687 { 1, 10, 8, 4, 0x10 },
1688 { 1, 9, 8, 2, 0x00 }
1689 };
1690
1691 *iret = 1; /* error */
1692
1693 for (i = 0; i < 13; i++) {
1694 ret |= SETIREGANDOR(SISSR, 0x13, 0x80, sdramtype[i][4]);
1695 for (j = 2; j > 0; j--) {
1696 ret |= sisusb_set_rank(sisusb, &i2ret, i, j, chab,
1697 sdramtype, bw);
1698 if (!i2ret)
1699 continue;
1700
1701 ret |= sisusb_check_ranks(sisusb, &i2ret, j, i, bw,
1702 sdramtype);
1703 if (i2ret) {
1704 *iret = 0; /* ram size found */
1705 return ret;
1706 }
1707 }
1708 }
1709
1710 return ret;
1711 }
1712
1713 static int sisusb_setup_screen(struct sisusb_usb_data *sisusb,
1714 int clrall, int drwfr)
1715 {
1716 int ret = 0;
1717 u32 address;
1718 int i, length, modex, modey, bpp;
1719
1720 modex = 640; modey = 480; bpp = 2;
1721
1722 address = sisusb->vrambase; /* Clear video ram */
1723
1724 if (clrall)
1725 length = sisusb->vramsize;
1726 else
1727 length = modex * bpp * modey;
1728
1729 ret = sisusb_clear_vram(sisusb, address, length);
1730
1731 if (!ret && drwfr) {
1732 for (i = 0; i < modex; i++) {
1733 address = sisusb->vrambase + (i * bpp);
1734 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1735 address, 0xf100);
1736 address += (modex * (modey-1) * bpp);
1737 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1738 address, 0xf100);
1739 }
1740 for (i = 0; i < modey; i++) {
1741 address = sisusb->vrambase + ((i * modex) * bpp);
1742 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1743 address, 0xf100);
1744 address += ((modex - 1) * bpp);
1745 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1746 address, 0xf100);
1747 }
1748 }
1749
1750 return ret;
1751 }
1752
1753 static int sisusb_set_default_mode(struct sisusb_usb_data *sisusb,
1754 int touchengines)
1755 {
1756 int ret = 0, i, j, modex, modey, bpp, du;
1757 u8 sr31, cr63, tmp8;
1758 static const char attrdata[] = {
1759 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
1760 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
1761 0x01, 0x00, 0x00, 0x00
1762 };
1763 static const char crtcrdata[] = {
1764 0x5f, 0x4f, 0x50, 0x82, 0x54, 0x80, 0x0b, 0x3e,
1765 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1766 0xea, 0x8c, 0xdf, 0x28, 0x40, 0xe7, 0x04, 0xa3,
1767 0xff
1768 };
1769 static const char grcdata[] = {
1770 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0f,
1771 0xff
1772 };
1773 static const char crtcdata[] = {
1774 0x5f, 0x4f, 0x4f, 0x83, 0x55, 0x81, 0x0b, 0x3e,
1775 0xe9, 0x8b, 0xdf, 0xe8, 0x0c, 0x00, 0x00, 0x05,
1776 0x00
1777 };
1778
1779 modex = 640; modey = 480; bpp = 2;
1780
1781 GETIREG(SISSR, 0x31, &sr31);
1782 GETIREG(SISCR, 0x63, &cr63);
1783 SETIREGOR(SISSR, 0x01, 0x20);
1784 SETIREG(SISCR, 0x63, cr63 & 0xbf);
1785 SETIREGOR(SISCR, 0x17, 0x80);
1786 SETIREGOR(SISSR, 0x1f, 0x04);
1787 SETIREGAND(SISSR, 0x07, 0xfb);
1788 SETIREG(SISSR, 0x00, 0x03); /* seq */
1789 SETIREG(SISSR, 0x01, 0x21);
1790 SETIREG(SISSR, 0x02, 0x0f);
1791 SETIREG(SISSR, 0x03, 0x00);
1792 SETIREG(SISSR, 0x04, 0x0e);
1793 SETREG(SISMISCW, 0x23); /* misc */
1794 for (i = 0; i <= 0x18; i++) { /* crtc */
1795 SETIREG(SISCR, i, crtcrdata[i]);
1796 }
1797 for (i = 0; i <= 0x13; i++) { /* att */
1798 GETREG(SISINPSTAT, &tmp8);
1799 SETREG(SISAR, i);
1800 SETREG(SISAR, attrdata[i]);
1801 }
1802 GETREG(SISINPSTAT, &tmp8);
1803 SETREG(SISAR, 0x14);
1804 SETREG(SISAR, 0x00);
1805 GETREG(SISINPSTAT, &tmp8);
1806 SETREG(SISAR, 0x20);
1807 GETREG(SISINPSTAT, &tmp8);
1808 for (i = 0; i <= 0x08; i++) { /* grc */
1809 SETIREG(SISGR, i, grcdata[i]);
1810 }
1811 SETIREGAND(SISGR, 0x05, 0xbf);
1812 for (i = 0x0A; i <= 0x0E; i++) { /* clr ext */
1813 SETIREG(SISSR, i, 0x00);
1814 }
1815 SETIREGAND(SISSR, 0x37, 0xfe);
1816 SETREG(SISMISCW, 0xef); /* sync */
1817 SETIREG(SISCR, 0x11, 0x00); /* crtc */
1818 for (j = 0x00, i = 0; i <= 7; i++, j++)
1819 SETIREG(SISCR, j, crtcdata[i]);
1820
1821 for (j = 0x10; i <= 10; i++, j++)
1822 SETIREG(SISCR, j, crtcdata[i]);
1823
1824 for (j = 0x15; i <= 12; i++, j++)
1825 SETIREG(SISCR, j, crtcdata[i]);
1826
1827 for (j = 0x0A; i <= 15; i++, j++)
1828 SETIREG(SISSR, j, crtcdata[i]);
1829
1830 SETIREG(SISSR, 0x0E, (crtcdata[16] & 0xE0));
1831 SETIREGANDOR(SISCR, 0x09, 0x5f, ((crtcdata[16] & 0x01) << 5));
1832 SETIREG(SISCR, 0x14, 0x4f);
1833 du = (modex / 16) * (bpp * 2); /* offset/pitch */
1834 if (modex % 16)
1835 du += bpp;
1836
1837 SETIREGANDOR(SISSR, 0x0e, 0xf0, ((du >> 8) & 0x0f));
1838 SETIREG(SISCR, 0x13, (du & 0xff));
1839 du <<= 5;
1840 tmp8 = du >> 8;
1841 if (du & 0xff)
1842 tmp8++;
1843
1844 SETIREG(SISSR, 0x10, tmp8);
1845 SETIREG(SISSR, 0x31, 0x00); /* VCLK */
1846 SETIREG(SISSR, 0x2b, 0x1b);
1847 SETIREG(SISSR, 0x2c, 0xe1);
1848 SETIREG(SISSR, 0x2d, 0x01);
1849 SETIREGAND(SISSR, 0x3d, 0xfe); /* FIFO */
1850 SETIREG(SISSR, 0x08, 0xae);
1851 SETIREGAND(SISSR, 0x09, 0xf0);
1852 SETIREG(SISSR, 0x08, 0x34);
1853 SETIREGOR(SISSR, 0x3d, 0x01);
1854 SETIREGAND(SISSR, 0x1f, 0x3f); /* mode regs */
1855 SETIREGANDOR(SISSR, 0x06, 0xc0, 0x0a);
1856 SETIREG(SISCR, 0x19, 0x00);
1857 SETIREGAND(SISCR, 0x1a, 0xfc);
1858 SETIREGAND(SISSR, 0x0f, 0xb7);
1859 SETIREGAND(SISSR, 0x31, 0xfb);
1860 SETIREGANDOR(SISSR, 0x21, 0x1f, 0xa0);
1861 SETIREGAND(SISSR, 0x32, 0xf3);
1862 SETIREGANDOR(SISSR, 0x07, 0xf8, 0x03);
1863 SETIREG(SISCR, 0x52, 0x6c);
1864
1865 SETIREG(SISCR, 0x0d, 0x00); /* adjust frame */
1866 SETIREG(SISCR, 0x0c, 0x00);
1867 SETIREG(SISSR, 0x0d, 0x00);
1868 SETIREGAND(SISSR, 0x37, 0xfe);
1869
1870 SETIREG(SISCR, 0x32, 0x20);
1871 SETIREGAND(SISSR, 0x01, 0xdf); /* enable display */
1872 SETIREG(SISCR, 0x63, (cr63 & 0xbf));
1873 SETIREG(SISSR, 0x31, (sr31 & 0xfb));
1874
1875 if (touchengines) {
1876 SETIREG(SISSR, 0x20, 0xa1); /* enable engines */
1877 SETIREGOR(SISSR, 0x1e, 0x5a);
1878
1879 SETIREG(SISSR, 0x26, 0x01); /* disable cmdqueue */
1880 SETIREG(SISSR, 0x27, 0x1f);
1881 SETIREG(SISSR, 0x26, 0x00);
1882 }
1883
1884 SETIREG(SISCR, 0x34, 0x44); /* we just set std mode #44 */
1885
1886 return ret;
1887 }
1888
1889 static int sisusb_init_gfxcore(struct sisusb_usb_data *sisusb)
1890 {
1891 int ret = 0, i, j, bw, chab, iret, retry = 3;
1892 u8 tmp8, ramtype;
1893 u32 tmp32;
1894 static const char mclktable[] = {
1895 0x3b, 0x22, 0x01, 143,
1896 0x3b, 0x22, 0x01, 143,
1897 0x3b, 0x22, 0x01, 143,
1898 0x3b, 0x22, 0x01, 143
1899 };
1900 static const char eclktable[] = {
1901 0x3b, 0x22, 0x01, 143,
1902 0x3b, 0x22, 0x01, 143,
1903 0x3b, 0x22, 0x01, 143,
1904 0x3b, 0x22, 0x01, 143
1905 };
1906 static const char ramtypetable1[] = {
1907 0x00, 0x04, 0x60, 0x60,
1908 0x0f, 0x0f, 0x1f, 0x1f,
1909 0xba, 0xba, 0xba, 0xba,
1910 0xa9, 0xa9, 0xac, 0xac,
1911 0xa0, 0xa0, 0xa0, 0xa8,
1912 0x00, 0x00, 0x02, 0x02,
1913 0x30, 0x30, 0x40, 0x40
1914 };
1915 static const char ramtypetable2[] = {
1916 0x77, 0x77, 0x44, 0x44,
1917 0x77, 0x77, 0x44, 0x44,
1918 0x00, 0x00, 0x00, 0x00,
1919 0x5b, 0x5b, 0xab, 0xab,
1920 0x00, 0x00, 0xf0, 0xf8
1921 };
1922
1923 while (retry--) {
1924
1925 /* Enable VGA */
1926 ret = GETREG(SISVGAEN, &tmp8);
1927 ret |= SETREG(SISVGAEN, (tmp8 | 0x01));
1928
1929 /* Enable GPU access to VRAM */
1930 ret |= GETREG(SISMISCR, &tmp8);
1931 ret |= SETREG(SISMISCW, (tmp8 | 0x01));
1932
1933 if (ret)
1934 continue;
1935
1936 /* Reset registers */
1937 ret |= SETIREGAND(SISCR, 0x5b, 0xdf);
1938 ret |= SETIREG(SISSR, 0x05, 0x86);
1939 ret |= SETIREGOR(SISSR, 0x20, 0x01);
1940
1941 ret |= SETREG(SISMISCW, 0x67);
1942
1943 for (i = 0x06; i <= 0x1f; i++)
1944 ret |= SETIREG(SISSR, i, 0x00);
1945
1946 for (i = 0x21; i <= 0x27; i++)
1947 ret |= SETIREG(SISSR, i, 0x00);
1948
1949 for (i = 0x31; i <= 0x3d; i++)
1950 ret |= SETIREG(SISSR, i, 0x00);
1951
1952 for (i = 0x12; i <= 0x1b; i++)
1953 ret |= SETIREG(SISSR, i, 0x00);
1954
1955 for (i = 0x79; i <= 0x7c; i++)
1956 ret |= SETIREG(SISCR, i, 0x00);
1957
1958 if (ret)
1959 continue;
1960
1961 ret |= SETIREG(SISCR, 0x63, 0x80);
1962
1963 ret |= GETIREG(SISSR, 0x3a, &ramtype);
1964 ramtype &= 0x03;
1965
1966 ret |= SETIREG(SISSR, 0x28, mclktable[ramtype * 4]);
1967 ret |= SETIREG(SISSR, 0x29, mclktable[(ramtype * 4) + 1]);
1968 ret |= SETIREG(SISSR, 0x2a, mclktable[(ramtype * 4) + 2]);
1969
1970 ret |= SETIREG(SISSR, 0x2e, eclktable[ramtype * 4]);
1971 ret |= SETIREG(SISSR, 0x2f, eclktable[(ramtype * 4) + 1]);
1972 ret |= SETIREG(SISSR, 0x30, eclktable[(ramtype * 4) + 2]);
1973
1974 ret |= SETIREG(SISSR, 0x07, 0x18);
1975 ret |= SETIREG(SISSR, 0x11, 0x0f);
1976
1977 if (ret)
1978 continue;
1979
1980 for (i = 0x15, j = 0; i <= 0x1b; i++, j++) {
1981 ret |= SETIREG(SISSR, i,
1982 ramtypetable1[(j*4) + ramtype]);
1983 }
1984 for (i = 0x40, j = 0; i <= 0x44; i++, j++) {
1985 ret |= SETIREG(SISCR, i,
1986 ramtypetable2[(j*4) + ramtype]);
1987 }
1988
1989 ret |= SETIREG(SISCR, 0x49, 0xaa);
1990
1991 ret |= SETIREG(SISSR, 0x1f, 0x00);
1992 ret |= SETIREG(SISSR, 0x20, 0xa0);
1993 ret |= SETIREG(SISSR, 0x23, 0xf6);
1994 ret |= SETIREG(SISSR, 0x24, 0x0d);
1995 ret |= SETIREG(SISSR, 0x25, 0x33);
1996
1997 ret |= SETIREG(SISSR, 0x11, 0x0f);
1998
1999 ret |= SETIREGOR(SISPART1, 0x2f, 0x01);
2000
2001 ret |= SETIREGAND(SISCAP, 0x3f, 0xef);
2002
2003 if (ret)
2004 continue;
2005
2006 ret |= SETIREG(SISPART1, 0x00, 0x00);
2007
2008 ret |= GETIREG(SISSR, 0x13, &tmp8);
2009 tmp8 >>= 4;
2010
2011 ret |= SETIREG(SISPART1, 0x02, 0x00);
2012 ret |= SETIREG(SISPART1, 0x2e, 0x08);
2013
2014 ret |= sisusb_read_pci_config(sisusb, 0x50, &tmp32);
2015 tmp32 &= 0x00f00000;
2016 tmp8 = (tmp32 == 0x100000) ? 0x33 : 0x03;
2017 ret |= SETIREG(SISSR, 0x25, tmp8);
2018 tmp8 = (tmp32 == 0x100000) ? 0xaa : 0x88;
2019 ret |= SETIREG(SISCR, 0x49, tmp8);
2020
2021 ret |= SETIREG(SISSR, 0x27, 0x1f);
2022 ret |= SETIREG(SISSR, 0x31, 0x00);
2023 ret |= SETIREG(SISSR, 0x32, 0x11);
2024 ret |= SETIREG(SISSR, 0x33, 0x00);
2025
2026 if (ret)
2027 continue;
2028
2029 ret |= SETIREG(SISCR, 0x83, 0x00);
2030
2031 ret |= sisusb_set_default_mode(sisusb, 0);
2032
2033 ret |= SETIREGAND(SISSR, 0x21, 0xdf);
2034 ret |= SETIREGOR(SISSR, 0x01, 0x20);
2035 ret |= SETIREGOR(SISSR, 0x16, 0x0f);
2036
2037 ret |= sisusb_triggersr16(sisusb, ramtype);
2038
2039 /* Disable refresh */
2040 ret |= SETIREGAND(SISSR, 0x17, 0xf8);
2041 ret |= SETIREGOR(SISSR, 0x19, 0x03);
2042
2043 ret |= sisusb_getbuswidth(sisusb, &bw, &chab);
2044 ret |= sisusb_verify_mclk(sisusb);
2045
2046 if (ramtype <= 1) {
2047 ret |= sisusb_get_sdram_size(sisusb, &iret, bw, chab);
2048 if (iret) {
2049 dev_err(&sisusb->sisusb_dev->dev,
2050 "RAM size detection failed, assuming 8MB video RAM\n");
2051 ret |= SETIREG(SISSR, 0x14, 0x31);
2052 /* TODO */
2053 }
2054 } else {
2055 dev_err(&sisusb->sisusb_dev->dev,
2056 "DDR RAM device found, assuming 8MB video RAM\n");
2057 ret |= SETIREG(SISSR, 0x14, 0x31);
2058 /* *** TODO *** */
2059 }
2060
2061 /* Enable refresh */
2062 ret |= SETIREG(SISSR, 0x16, ramtypetable1[4 + ramtype]);
2063 ret |= SETIREG(SISSR, 0x17, ramtypetable1[8 + ramtype]);
2064 ret |= SETIREG(SISSR, 0x19, ramtypetable1[16 + ramtype]);
2065
2066 ret |= SETIREGOR(SISSR, 0x21, 0x20);
2067
2068 ret |= SETIREG(SISSR, 0x22, 0xfb);
2069 ret |= SETIREG(SISSR, 0x21, 0xa5);
2070
2071 if (ret == 0)
2072 break;
2073 }
2074
2075 return ret;
2076 }
2077
2078 #undef SETREG
2079 #undef GETREG
2080 #undef SETIREG
2081 #undef GETIREG
2082 #undef SETIREGOR
2083 #undef SETIREGAND
2084 #undef SETIREGANDOR
2085 #undef READL
2086 #undef WRITEL
2087
2088 static void sisusb_get_ramconfig(struct sisusb_usb_data *sisusb)
2089 {
2090 u8 tmp8, tmp82, ramtype;
2091 int bw = 0;
2092 char *ramtypetext1 = NULL;
2093 static const char ram_datarate[4] = {'S', 'S', 'D', 'D'};
2094 static const char ram_dynamictype[4] = {'D', 'G', 'D', 'G'};
2095 static const int busSDR[4] = {64, 64, 128, 128};
2096 static const int busDDR[4] = {32, 32, 64, 64};
2097 static const int busDDRA[4] = {64+32, 64+32, (64+32)*2, (64+32)*2};
2098
2099 sisusb_getidxreg(sisusb, SISSR, 0x14, &tmp8);
2100 sisusb_getidxreg(sisusb, SISSR, 0x15, &tmp82);
2101 sisusb_getidxreg(sisusb, SISSR, 0x3a, &ramtype);
2102 sisusb->vramsize = (1 << ((tmp8 & 0xf0) >> 4)) * 1024 * 1024;
2103 ramtype &= 0x03;
2104 switch ((tmp8 >> 2) & 0x03) {
2105 case 0:
2106 ramtypetext1 = "1 ch/1 r";
2107 if (tmp82 & 0x10)
2108 bw = 32;
2109 else
2110 bw = busSDR[(tmp8 & 0x03)];
2111
2112 break;
2113 case 1:
2114 ramtypetext1 = "1 ch/2 r";
2115 sisusb->vramsize <<= 1;
2116 bw = busSDR[(tmp8 & 0x03)];
2117 break;
2118 case 2:
2119 ramtypetext1 = "asymmeric";
2120 sisusb->vramsize += sisusb->vramsize/2;
2121 bw = busDDRA[(tmp8 & 0x03)];
2122 break;
2123 case 3:
2124 ramtypetext1 = "2 channel";
2125 sisusb->vramsize <<= 1;
2126 bw = busDDR[(tmp8 & 0x03)];
2127 break;
2128 }
2129
2130 dev_info(&sisusb->sisusb_dev->dev,
2131 "%dMB %s %cDR S%cRAM, bus width %d\n",
2132 sisusb->vramsize >> 20, ramtypetext1,
2133 ram_datarate[ramtype], ram_dynamictype[ramtype], bw);
2134 }
2135
2136 static int sisusb_do_init_gfxdevice(struct sisusb_usb_data *sisusb)
2137 {
2138 struct sisusb_packet packet;
2139 int ret;
2140 u32 tmp32;
2141
2142 /* Do some magic */
2143 packet.header = 0x001f;
2144 packet.address = 0x00000324;
2145 packet.data = 0x00000004;
2146 ret = sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2147
2148 packet.header = 0x001f;
2149 packet.address = 0x00000364;
2150 packet.data = 0x00000004;
2151 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2152
2153 packet.header = 0x001f;
2154 packet.address = 0x00000384;
2155 packet.data = 0x00000004;
2156 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2157
2158 packet.header = 0x001f;
2159 packet.address = 0x00000100;
2160 packet.data = 0x00000700;
2161 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2162
2163 packet.header = 0x000f;
2164 packet.address = 0x00000004;
2165 ret |= sisusb_send_bridge_packet(sisusb, 6, &packet, 0);
2166 packet.data |= 0x17;
2167 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2168
2169 /* Init BAR 0 (VRAM) */
2170 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2171 ret |= sisusb_write_pci_config(sisusb, 0x10, 0xfffffff0);
2172 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2173 tmp32 &= 0x0f;
2174 tmp32 |= SISUSB_PCI_MEMBASE;
2175 ret |= sisusb_write_pci_config(sisusb, 0x10, tmp32);
2176
2177 /* Init BAR 1 (MMIO) */
2178 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2179 ret |= sisusb_write_pci_config(sisusb, 0x14, 0xfffffff0);
2180 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2181 tmp32 &= 0x0f;
2182 tmp32 |= SISUSB_PCI_MMIOBASE;
2183 ret |= sisusb_write_pci_config(sisusb, 0x14, tmp32);
2184
2185 /* Init BAR 2 (i/o ports) */
2186 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2187 ret |= sisusb_write_pci_config(sisusb, 0x18, 0xfffffff0);
2188 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2189 tmp32 &= 0x0f;
2190 tmp32 |= SISUSB_PCI_IOPORTBASE;
2191 ret |= sisusb_write_pci_config(sisusb, 0x18, tmp32);
2192
2193 /* Enable memory and i/o access */
2194 ret |= sisusb_read_pci_config(sisusb, 0x04, &tmp32);
2195 tmp32 |= 0x3;
2196 ret |= sisusb_write_pci_config(sisusb, 0x04, tmp32);
2197
2198 if (ret == 0) {
2199 /* Some further magic */
2200 packet.header = 0x001f;
2201 packet.address = 0x00000050;
2202 packet.data = 0x000000ff;
2203 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2204 }
2205
2206 return ret;
2207 }
2208
2209 /* Initialize the graphics device (return 0 on success)
2210 * This initializes the net2280 as well as the PCI registers
2211 * of the graphics board.
2212 */
2213
2214 static int sisusb_init_gfxdevice(struct sisusb_usb_data *sisusb, int initscreen)
2215 {
2216 int ret = 0, test = 0;
2217 u32 tmp32;
2218
2219 if (sisusb->devinit == 1) {
2220 /* Read PCI BARs and see if they have been set up */
2221 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2222 if (ret)
2223 return ret;
2224
2225 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MEMBASE)
2226 test++;
2227
2228 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2229 if (ret)
2230 return ret;
2231
2232 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MMIOBASE)
2233 test++;
2234
2235 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2236 if (ret)
2237 return ret;
2238
2239 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_IOPORTBASE)
2240 test++;
2241 }
2242
2243 /* No? So reset the device */
2244 if ((sisusb->devinit == 0) || (test != 3)) {
2245
2246 ret |= sisusb_do_init_gfxdevice(sisusb);
2247
2248 if (ret == 0)
2249 sisusb->devinit = 1;
2250
2251 }
2252
2253 if (sisusb->devinit) {
2254 /* Initialize the graphics core */
2255 if (sisusb_init_gfxcore(sisusb) == 0) {
2256 sisusb->gfxinit = 1;
2257 sisusb_get_ramconfig(sisusb);
2258 ret |= sisusb_set_default_mode(sisusb, 1);
2259 ret |= sisusb_setup_screen(sisusb, 1, initscreen);
2260 }
2261 }
2262
2263 return ret;
2264 }
2265
2266
2267 #ifdef INCL_SISUSB_CON
2268
2269 /* Set up default text mode:
2270 * - Set text mode (0x03)
2271 * - Upload default font
2272 * - Upload user font (if available)
2273 */
2274
2275 int sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init)
2276 {
2277 int ret = 0, slot = sisusb->font_slot, i;
2278 const struct font_desc *myfont;
2279 u8 *tempbuf;
2280 u16 *tempbufb;
2281 static const char bootstring[] =
2282 "SiSUSB VGA text console, (C) 2005 Thomas Winischhofer.";
2283 static const char bootlogo[] = "(o_ //\\ V_/_";
2284
2285 /* sisusb->lock is down */
2286
2287 if (!sisusb->SiS_Pr)
2288 return 1;
2289
2290 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2291 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2292
2293 /* Set mode 0x03 */
2294 SiSUSBSetMode(sisusb->SiS_Pr, 0x03);
2295
2296 myfont = find_font("VGA8x16");
2297 if (!myfont)
2298 return 1;
2299
2300 tempbuf = vmalloc(8192);
2301 if (!tempbuf)
2302 return 1;
2303
2304 for (i = 0; i < 256; i++)
2305 memcpy(tempbuf + (i * 32), myfont->data + (i * 16), 16);
2306
2307 /* Upload default font */
2308 ret = sisusbcon_do_font_op(sisusb, 1, 0, tempbuf, 8192,
2309 0, 1, NULL, 16, 0);
2310
2311 vfree(tempbuf);
2312
2313 /* Upload user font (and reset current slot) */
2314 if (sisusb->font_backup) {
2315 ret |= sisusbcon_do_font_op(sisusb, 1, 2, sisusb->font_backup,
2316 8192, sisusb->font_backup_512, 1, NULL,
2317 sisusb->font_backup_height, 0);
2318 if (slot != 2)
2319 sisusbcon_do_font_op(sisusb, 1, 0, NULL, 0, 0, 1,
2320 NULL, 16, 0);
2321 }
2322
2323 if (init && !sisusb->scrbuf) {
2324
2325 tempbuf = vmalloc(8192);
2326 if (tempbuf) {
2327
2328 i = 4096;
2329 tempbufb = (u16 *)tempbuf;
2330 while (i--)
2331 *(tempbufb++) = 0x0720;
2332
2333 i = 0;
2334 tempbufb = (u16 *)tempbuf;
2335 while (bootlogo[i]) {
2336 *(tempbufb++) = 0x0700 | bootlogo[i++];
2337 if (!(i % 4))
2338 tempbufb += 76;
2339 }
2340
2341 i = 0;
2342 tempbufb = (u16 *)tempbuf + 6;
2343 while (bootstring[i])
2344 *(tempbufb++) = 0x0700 | bootstring[i++];
2345
2346 ret |= sisusb_copy_memory(sisusb, tempbuf,
2347 sisusb->vrambase, 8192);
2348
2349 vfree(tempbuf);
2350
2351 }
2352
2353 } else if (sisusb->scrbuf) {
2354 ret |= sisusb_copy_memory(sisusb, (char *)sisusb->scrbuf,
2355 sisusb->vrambase, sisusb->scrbuf_size);
2356 }
2357
2358 if (sisusb->sisusb_cursor_size_from >= 0 &&
2359 sisusb->sisusb_cursor_size_to >= 0) {
2360 sisusb_setidxreg(sisusb, SISCR, 0x0a,
2361 sisusb->sisusb_cursor_size_from);
2362 sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0,
2363 sisusb->sisusb_cursor_size_to);
2364 } else {
2365 sisusb_setidxreg(sisusb, SISCR, 0x0a, 0x2d);
2366 sisusb_setidxreg(sisusb, SISCR, 0x0b, 0x0e);
2367 sisusb->sisusb_cursor_size_to = -1;
2368 }
2369
2370 slot = sisusb->sisusb_cursor_loc;
2371 if (slot < 0)
2372 slot = 0;
2373
2374 sisusb->sisusb_cursor_loc = -1;
2375 sisusb->bad_cursor_pos = 1;
2376
2377 sisusb_set_cursor(sisusb, slot);
2378
2379 sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8));
2380 sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff));
2381
2382 sisusb->textmodedestroyed = 0;
2383
2384 /* sisusb->lock is down */
2385
2386 return ret;
2387 }
2388
2389 #endif
2390
2391 /* fops */
2392
2393 static int sisusb_open(struct inode *inode, struct file *file)
2394 {
2395 struct sisusb_usb_data *sisusb;
2396 struct usb_interface *interface;
2397 int subminor = iminor(inode);
2398
2399 interface = usb_find_interface(&sisusb_driver, subminor);
2400 if (!interface)
2401 return -ENODEV;
2402
2403 sisusb = usb_get_intfdata(interface);
2404 if (!sisusb)
2405 return -ENODEV;
2406
2407 mutex_lock(&sisusb->lock);
2408
2409 if (!sisusb->present || !sisusb->ready) {
2410 mutex_unlock(&sisusb->lock);
2411 return -ENODEV;
2412 }
2413
2414 if (sisusb->isopen) {
2415 mutex_unlock(&sisusb->lock);
2416 return -EBUSY;
2417 }
2418
2419 if (!sisusb->devinit) {
2420 if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH ||
2421 sisusb->sisusb_dev->speed >= USB_SPEED_SUPER) {
2422 if (sisusb_init_gfxdevice(sisusb, 0)) {
2423 mutex_unlock(&sisusb->lock);
2424 dev_err(&sisusb->sisusb_dev->dev,
2425 "Failed to initialize device\n");
2426 return -EIO;
2427 }
2428 } else {
2429 mutex_unlock(&sisusb->lock);
2430 dev_err(&sisusb->sisusb_dev->dev,
2431 "Device not attached to USB 2.0 hub\n");
2432 return -EIO;
2433 }
2434 }
2435
2436 /* Increment usage count for our sisusb */
2437 kref_get(&sisusb->kref);
2438
2439 sisusb->isopen = 1;
2440
2441 file->private_data = sisusb;
2442
2443 mutex_unlock(&sisusb->lock);
2444
2445 return 0;
2446 }
2447
2448 void sisusb_delete(struct kref *kref)
2449 {
2450 struct sisusb_usb_data *sisusb = to_sisusb_dev(kref);
2451
2452 if (!sisusb)
2453 return;
2454
2455 usb_put_dev(sisusb->sisusb_dev);
2456
2457 sisusb->sisusb_dev = NULL;
2458 sisusb_free_buffers(sisusb);
2459 sisusb_free_urbs(sisusb);
2460 #ifdef INCL_SISUSB_CON
2461 kfree(sisusb->SiS_Pr);
2462 #endif
2463 kfree(sisusb);
2464 }
2465
2466 static int sisusb_release(struct inode *inode, struct file *file)
2467 {
2468 struct sisusb_usb_data *sisusb;
2469
2470 sisusb = file->private_data;
2471 if (!sisusb)
2472 return -ENODEV;
2473
2474 mutex_lock(&sisusb->lock);
2475
2476 if (sisusb->present) {
2477 /* Wait for all URBs to finish if device still present */
2478 if (!sisusb_wait_all_out_complete(sisusb))
2479 sisusb_kill_all_busy(sisusb);
2480 }
2481
2482 sisusb->isopen = 0;
2483 file->private_data = NULL;
2484
2485 mutex_unlock(&sisusb->lock);
2486
2487 /* decrement the usage count on our device */
2488 kref_put(&sisusb->kref, sisusb_delete);
2489
2490 return 0;
2491 }
2492
2493 static ssize_t sisusb_read(struct file *file, char __user *buffer,
2494 size_t count, loff_t *ppos)
2495 {
2496 struct sisusb_usb_data *sisusb;
2497 ssize_t bytes_read = 0;
2498 int errno = 0;
2499 u8 buf8;
2500 u16 buf16;
2501 u32 buf32, address;
2502
2503 sisusb = file->private_data;
2504 if (!sisusb)
2505 return -ENODEV;
2506
2507 mutex_lock(&sisusb->lock);
2508
2509 /* Sanity check */
2510 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2511 mutex_unlock(&sisusb->lock);
2512 return -ENODEV;
2513 }
2514
2515 if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
2516 (*ppos) < SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
2517
2518 address = (*ppos) - SISUSB_PCI_PSEUDO_IOPORTBASE +
2519 SISUSB_PCI_IOPORTBASE;
2520
2521 /* Read i/o ports
2522 * Byte, word and long(32) can be read. As this
2523 * emulates inX instructions, the data returned is
2524 * in machine-endianness.
2525 */
2526 switch (count) {
2527 case 1:
2528 if (sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO,
2529 address, &buf8))
2530 errno = -EIO;
2531 else if (put_user(buf8, (u8 __user *)buffer))
2532 errno = -EFAULT;
2533 else
2534 bytes_read = 1;
2535
2536 break;
2537
2538 case 2:
2539 if (sisusb_read_memio_word(sisusb, SISUSB_TYPE_IO,
2540 address, &buf16))
2541 errno = -EIO;
2542 else if (put_user(buf16, (u16 __user *)buffer))
2543 errno = -EFAULT;
2544 else
2545 bytes_read = 2;
2546
2547 break;
2548
2549 case 4:
2550 if (sisusb_read_memio_long(sisusb, SISUSB_TYPE_IO,
2551 address, &buf32))
2552 errno = -EIO;
2553 else if (put_user(buf32, (u32 __user *)buffer))
2554 errno = -EFAULT;
2555 else
2556 bytes_read = 4;
2557
2558 break;
2559
2560 default:
2561 errno = -EIO;
2562
2563 }
2564
2565 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE && (*ppos) <
2566 SISUSB_PCI_PSEUDO_MEMBASE + sisusb->vramsize) {
2567
2568 address = (*ppos) - SISUSB_PCI_PSEUDO_MEMBASE +
2569 SISUSB_PCI_MEMBASE;
2570
2571 /* Read video ram
2572 * Remember: Data delivered is never endian-corrected
2573 */
2574 errno = sisusb_read_mem_bulk(sisusb, address,
2575 NULL, count, buffer, &bytes_read);
2576
2577 if (bytes_read)
2578 errno = bytes_read;
2579
2580 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
2581 (*ppos) < SISUSB_PCI_PSEUDO_MMIOBASE +
2582 SISUSB_PCI_MMIOSIZE) {
2583
2584 address = (*ppos) - SISUSB_PCI_PSEUDO_MMIOBASE +
2585 SISUSB_PCI_MMIOBASE;
2586
2587 /* Read MMIO
2588 * Remember: Data delivered is never endian-corrected
2589 */
2590 errno = sisusb_read_mem_bulk(sisusb, address,
2591 NULL, count, buffer, &bytes_read);
2592
2593 if (bytes_read)
2594 errno = bytes_read;
2595
2596 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
2597 (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + 0x5c) {
2598
2599 if (count != 4) {
2600 mutex_unlock(&sisusb->lock);
2601 return -EINVAL;
2602 }
2603
2604 address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
2605
2606 /* Read PCI config register
2607 * Return value delivered in machine endianness.
2608 */
2609 if (sisusb_read_pci_config(sisusb, address, &buf32))
2610 errno = -EIO;
2611 else if (put_user(buf32, (u32 __user *)buffer))
2612 errno = -EFAULT;
2613 else
2614 bytes_read = 4;
2615
2616 } else {
2617
2618 errno = -EBADFD;
2619
2620 }
2621
2622 (*ppos) += bytes_read;
2623
2624 mutex_unlock(&sisusb->lock);
2625
2626 return errno ? errno : bytes_read;
2627 }
2628
2629 static ssize_t sisusb_write(struct file *file, const char __user *buffer,
2630 size_t count, loff_t *ppos)
2631 {
2632 struct sisusb_usb_data *sisusb;
2633 int errno = 0;
2634 ssize_t bytes_written = 0;
2635 u8 buf8;
2636 u16 buf16;
2637 u32 buf32, address;
2638
2639 sisusb = file->private_data;
2640 if (!sisusb)
2641 return -ENODEV;
2642
2643 mutex_lock(&sisusb->lock);
2644
2645 /* Sanity check */
2646 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2647 mutex_unlock(&sisusb->lock);
2648 return -ENODEV;
2649 }
2650
2651 if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
2652 (*ppos) < SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
2653
2654 address = (*ppos) - SISUSB_PCI_PSEUDO_IOPORTBASE +
2655 SISUSB_PCI_IOPORTBASE;
2656
2657 /* Write i/o ports
2658 * Byte, word and long(32) can be written. As this
2659 * emulates outX instructions, the data is expected
2660 * in machine-endianness.
2661 */
2662 switch (count) {
2663 case 1:
2664 if (get_user(buf8, (u8 __user *)buffer))
2665 errno = -EFAULT;
2666 else if (sisusb_write_memio_byte(sisusb,
2667 SISUSB_TYPE_IO, address, buf8))
2668 errno = -EIO;
2669 else
2670 bytes_written = 1;
2671
2672 break;
2673
2674 case 2:
2675 if (get_user(buf16, (u16 __user *)buffer))
2676 errno = -EFAULT;
2677 else if (sisusb_write_memio_word(sisusb,
2678 SISUSB_TYPE_IO, address, buf16))
2679 errno = -EIO;
2680 else
2681 bytes_written = 2;
2682
2683 break;
2684
2685 case 4:
2686 if (get_user(buf32, (u32 __user *)buffer))
2687 errno = -EFAULT;
2688 else if (sisusb_write_memio_long(sisusb,
2689 SISUSB_TYPE_IO, address, buf32))
2690 errno = -EIO;
2691 else
2692 bytes_written = 4;
2693
2694 break;
2695
2696 default:
2697 errno = -EIO;
2698 }
2699
2700 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE &&
2701 (*ppos) < SISUSB_PCI_PSEUDO_MEMBASE +
2702 sisusb->vramsize) {
2703
2704 address = (*ppos) - SISUSB_PCI_PSEUDO_MEMBASE +
2705 SISUSB_PCI_MEMBASE;
2706
2707 /* Write video ram.
2708 * Buffer is copied 1:1, therefore, on big-endian
2709 * machines, the data must be swapped by userland
2710 * in advance (if applicable; no swapping in 8bpp
2711 * mode or if YUV data is being transferred).
2712 */
2713 errno = sisusb_write_mem_bulk(sisusb, address, NULL,
2714 count, buffer, 0, &bytes_written);
2715
2716 if (bytes_written)
2717 errno = bytes_written;
2718
2719 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
2720 (*ppos) < SISUSB_PCI_PSEUDO_MMIOBASE +
2721 SISUSB_PCI_MMIOSIZE) {
2722
2723 address = (*ppos) - SISUSB_PCI_PSEUDO_MMIOBASE +
2724 SISUSB_PCI_MMIOBASE;
2725
2726 /* Write MMIO.
2727 * Buffer is copied 1:1, therefore, on big-endian
2728 * machines, the data must be swapped by userland
2729 * in advance.
2730 */
2731 errno = sisusb_write_mem_bulk(sisusb, address, NULL,
2732 count, buffer, 0, &bytes_written);
2733
2734 if (bytes_written)
2735 errno = bytes_written;
2736
2737 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
2738 (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE +
2739 SISUSB_PCI_PCONFSIZE) {
2740
2741 if (count != 4) {
2742 mutex_unlock(&sisusb->lock);
2743 return -EINVAL;
2744 }
2745
2746 address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
2747
2748 /* Write PCI config register.
2749 * Given value expected in machine endianness.
2750 */
2751 if (get_user(buf32, (u32 __user *)buffer))
2752 errno = -EFAULT;
2753 else if (sisusb_write_pci_config(sisusb, address, buf32))
2754 errno = -EIO;
2755 else
2756 bytes_written = 4;
2757
2758
2759 } else {
2760
2761 /* Error */
2762 errno = -EBADFD;
2763
2764 }
2765
2766 (*ppos) += bytes_written;
2767
2768 mutex_unlock(&sisusb->lock);
2769
2770 return errno ? errno : bytes_written;
2771 }
2772
2773 static loff_t sisusb_lseek(struct file *file, loff_t offset, int orig)
2774 {
2775 struct sisusb_usb_data *sisusb;
2776 loff_t ret;
2777
2778 sisusb = file->private_data;
2779 if (!sisusb)
2780 return -ENODEV;
2781
2782 mutex_lock(&sisusb->lock);
2783
2784 /* Sanity check */
2785 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2786 mutex_unlock(&sisusb->lock);
2787 return -ENODEV;
2788 }
2789
2790 ret = no_seek_end_llseek(file, offset, orig);
2791
2792 mutex_unlock(&sisusb->lock);
2793 return ret;
2794 }
2795
2796 static int sisusb_handle_command(struct sisusb_usb_data *sisusb,
2797 struct sisusb_command *y, unsigned long arg)
2798 {
2799 int retval, port, length;
2800 u32 address;
2801
2802 /* All our commands require the device
2803 * to be initialized.
2804 */
2805 if (!sisusb->devinit)
2806 return -ENODEV;
2807
2808 port = y->data3 -
2809 SISUSB_PCI_PSEUDO_IOPORTBASE +
2810 SISUSB_PCI_IOPORTBASE;
2811
2812 switch (y->operation) {
2813 case SUCMD_GET:
2814 retval = sisusb_getidxreg(sisusb, port, y->data0, &y->data1);
2815 if (!retval) {
2816 if (copy_to_user((void __user *)arg, y, sizeof(*y)))
2817 retval = -EFAULT;
2818 }
2819 break;
2820
2821 case SUCMD_SET:
2822 retval = sisusb_setidxreg(sisusb, port, y->data0, y->data1);
2823 break;
2824
2825 case SUCMD_SETOR:
2826 retval = sisusb_setidxregor(sisusb, port, y->data0, y->data1);
2827 break;
2828
2829 case SUCMD_SETAND:
2830 retval = sisusb_setidxregand(sisusb, port, y->data0, y->data1);
2831 break;
2832
2833 case SUCMD_SETANDOR:
2834 retval = sisusb_setidxregandor(sisusb, port, y->data0,
2835 y->data1, y->data2);
2836 break;
2837
2838 case SUCMD_SETMASK:
2839 retval = sisusb_setidxregmask(sisusb, port, y->data0,
2840 y->data1, y->data2);
2841 break;
2842
2843 case SUCMD_CLRSCR:
2844 /* Gfx core must be initialized */
2845 if (!sisusb->gfxinit)
2846 return -ENODEV;
2847
2848 length = (y->data0 << 16) | (y->data1 << 8) | y->data2;
2849 address = y->data3 - SISUSB_PCI_PSEUDO_MEMBASE +
2850 SISUSB_PCI_MEMBASE;
2851 retval = sisusb_clear_vram(sisusb, address, length);
2852 break;
2853
2854 case SUCMD_HANDLETEXTMODE:
2855 retval = 0;
2856 #ifdef INCL_SISUSB_CON
2857 /* Gfx core must be initialized, SiS_Pr must exist */
2858 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2859 return -ENODEV;
2860
2861 switch (y->data0) {
2862 case 0:
2863 retval = sisusb_reset_text_mode(sisusb, 0);
2864 break;
2865 case 1:
2866 sisusb->textmodedestroyed = 1;
2867 break;
2868 }
2869 #endif
2870 break;
2871
2872 #ifdef INCL_SISUSB_CON
2873 case SUCMD_SETMODE:
2874 /* Gfx core must be initialized, SiS_Pr must exist */
2875 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2876 return -ENODEV;
2877
2878 retval = 0;
2879
2880 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2881 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2882
2883 if (SiSUSBSetMode(sisusb->SiS_Pr, y->data3))
2884 retval = -EINVAL;
2885
2886 break;
2887
2888 case SUCMD_SETVESAMODE:
2889 /* Gfx core must be initialized, SiS_Pr must exist */
2890 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2891 return -ENODEV;
2892
2893 retval = 0;
2894
2895 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2896 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2897
2898 if (SiSUSBSetVESAMode(sisusb->SiS_Pr, y->data3))
2899 retval = -EINVAL;
2900
2901 break;
2902 #endif
2903
2904 default:
2905 retval = -EINVAL;
2906 }
2907
2908 if (retval > 0)
2909 retval = -EIO;
2910
2911 return retval;
2912 }
2913
2914 static long sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2915 {
2916 struct sisusb_usb_data *sisusb;
2917 struct sisusb_info x;
2918 struct sisusb_command y;
2919 long retval = 0;
2920 u32 __user *argp = (u32 __user *)arg;
2921
2922 sisusb = file->private_data;
2923 if (!sisusb)
2924 return -ENODEV;
2925
2926 mutex_lock(&sisusb->lock);
2927
2928 /* Sanity check */
2929 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2930 retval = -ENODEV;
2931 goto err_out;
2932 }
2933
2934 switch (cmd) {
2935 case SISUSB_GET_CONFIG_SIZE:
2936
2937 if (put_user(sizeof(x), argp))
2938 retval = -EFAULT;
2939
2940 break;
2941
2942 case SISUSB_GET_CONFIG:
2943
2944 x.sisusb_id = SISUSB_ID;
2945 x.sisusb_version = SISUSB_VERSION;
2946 x.sisusb_revision = SISUSB_REVISION;
2947 x.sisusb_patchlevel = SISUSB_PATCHLEVEL;
2948 x.sisusb_gfxinit = sisusb->gfxinit;
2949 x.sisusb_vrambase = SISUSB_PCI_PSEUDO_MEMBASE;
2950 x.sisusb_mmiobase = SISUSB_PCI_PSEUDO_MMIOBASE;
2951 x.sisusb_iobase = SISUSB_PCI_PSEUDO_IOPORTBASE;
2952 x.sisusb_pcibase = SISUSB_PCI_PSEUDO_PCIBASE;
2953 x.sisusb_vramsize = sisusb->vramsize;
2954 x.sisusb_minor = sisusb->minor;
2955 x.sisusb_fbdevactive = 0;
2956 #ifdef INCL_SISUSB_CON
2957 x.sisusb_conactive = sisusb->haveconsole ? 1 : 0;
2958 #else
2959 x.sisusb_conactive = 0;
2960 #endif
2961 memset(x.sisusb_reserved, 0, sizeof(x.sisusb_reserved));
2962
2963 if (copy_to_user((void __user *)arg, &x, sizeof(x)))
2964 retval = -EFAULT;
2965
2966 break;
2967
2968 case SISUSB_COMMAND:
2969
2970 if (copy_from_user(&y, (void __user *)arg, sizeof(y)))
2971 retval = -EFAULT;
2972 else
2973 retval = sisusb_handle_command(sisusb, &y, arg);
2974
2975 break;
2976
2977 default:
2978 retval = -ENOTTY;
2979 break;
2980 }
2981
2982 err_out:
2983 mutex_unlock(&sisusb->lock);
2984 return retval;
2985 }
2986
2987 #ifdef SISUSB_NEW_CONFIG_COMPAT
2988 static long sisusb_compat_ioctl(struct file *f, unsigned int cmd,
2989 unsigned long arg)
2990 {
2991 long retval;
2992
2993 switch (cmd) {
2994 case SISUSB_GET_CONFIG_SIZE:
2995 case SISUSB_GET_CONFIG:
2996 case SISUSB_COMMAND:
2997 retval = sisusb_ioctl(f, cmd, arg);
2998 return retval;
2999
3000 default:
3001 return -ENOIOCTLCMD;
3002 }
3003 }
3004 #endif
3005
3006 static const struct file_operations usb_sisusb_fops = {
3007 .owner = THIS_MODULE,
3008 .open = sisusb_open,
3009 .release = sisusb_release,
3010 .read = sisusb_read,
3011 .write = sisusb_write,
3012 .llseek = sisusb_lseek,
3013 #ifdef SISUSB_NEW_CONFIG_COMPAT
3014 .compat_ioctl = sisusb_compat_ioctl,
3015 #endif
3016 .unlocked_ioctl = sisusb_ioctl
3017 };
3018
3019 static struct usb_class_driver usb_sisusb_class = {
3020 .name = "sisusbvga%d",
3021 .fops = &usb_sisusb_fops,
3022 .minor_base = SISUSB_MINOR
3023 };
3024
3025 static int sisusb_probe(struct usb_interface *intf,
3026 const struct usb_device_id *id)
3027 {
3028 struct usb_device *dev = interface_to_usbdev(intf);
3029 struct sisusb_usb_data *sisusb;
3030 int retval = 0, i;
3031
3032 dev_info(&dev->dev, "USB2VGA dongle found at address %d\n",
3033 dev->devnum);
3034
3035 /* Allocate memory for our private */
3036 sisusb = kzalloc(sizeof(*sisusb), GFP_KERNEL);
3037 if (!sisusb)
3038 return -ENOMEM;
3039
3040 kref_init(&sisusb->kref);
3041
3042 mutex_init(&(sisusb->lock));
3043
3044 /* Register device */
3045 retval = usb_register_dev(intf, &usb_sisusb_class);
3046 if (retval) {
3047 dev_err(&sisusb->sisusb_dev->dev,
3048 "Failed to get a minor for device %d\n",
3049 dev->devnum);
3050 retval = -ENODEV;
3051 goto error_1;
3052 }
3053
3054 sisusb->sisusb_dev = dev;
3055 sisusb->minor = intf->minor;
3056 sisusb->vrambase = SISUSB_PCI_MEMBASE;
3057 sisusb->mmiobase = SISUSB_PCI_MMIOBASE;
3058 sisusb->mmiosize = SISUSB_PCI_MMIOSIZE;
3059 sisusb->ioportbase = SISUSB_PCI_IOPORTBASE;
3060 /* Everything else is zero */
3061
3062 /* Allocate buffers */
3063 sisusb->ibufsize = SISUSB_IBUF_SIZE;
3064 sisusb->ibuf = kmalloc(SISUSB_IBUF_SIZE, GFP_KERNEL);
3065 if (!sisusb->ibuf) {
3066 retval = -ENOMEM;
3067 goto error_2;
3068 }
3069
3070 sisusb->numobufs = 0;
3071 sisusb->obufsize = SISUSB_OBUF_SIZE;
3072 for (i = 0; i < NUMOBUFS; i++) {
3073 sisusb->obuf[i] = kmalloc(SISUSB_OBUF_SIZE, GFP_KERNEL);
3074 if (!sisusb->obuf[i]) {
3075 if (i == 0) {
3076 retval = -ENOMEM;
3077 goto error_3;
3078 }
3079 break;
3080 }
3081 sisusb->numobufs++;
3082 }
3083
3084 /* Allocate URBs */
3085 sisusb->sisurbin = usb_alloc_urb(0, GFP_KERNEL);
3086 if (!sisusb->sisurbin) {
3087 retval = -ENOMEM;
3088 goto error_3;
3089 }
3090 sisusb->completein = 1;
3091
3092 for (i = 0; i < sisusb->numobufs; i++) {
3093 sisusb->sisurbout[i] = usb_alloc_urb(0, GFP_KERNEL);
3094 if (!sisusb->sisurbout[i]) {
3095 retval = -ENOMEM;
3096 goto error_4;
3097 }
3098 sisusb->urbout_context[i].sisusb = (void *)sisusb;
3099 sisusb->urbout_context[i].urbindex = i;
3100 sisusb->urbstatus[i] = 0;
3101 }
3102
3103 dev_info(&sisusb->sisusb_dev->dev, "Allocated %d output buffers\n",
3104 sisusb->numobufs);
3105
3106 #ifdef INCL_SISUSB_CON
3107 /* Allocate our SiS_Pr */
3108 sisusb->SiS_Pr = kmalloc(sizeof(struct SiS_Private), GFP_KERNEL);
3109 if (!sisusb->SiS_Pr) {
3110 retval = -ENOMEM;
3111 goto error_4;
3112 }
3113 #endif
3114
3115 /* Do remaining init stuff */
3116
3117 init_waitqueue_head(&sisusb->wait_q);
3118
3119 usb_set_intfdata(intf, sisusb);
3120
3121 usb_get_dev(sisusb->sisusb_dev);
3122
3123 sisusb->present = 1;
3124
3125 if (dev->speed == USB_SPEED_HIGH || dev->speed >= USB_SPEED_SUPER) {
3126 int initscreen = 1;
3127 #ifdef INCL_SISUSB_CON
3128 if (sisusb_first_vc > 0 && sisusb_last_vc > 0 &&
3129 sisusb_first_vc <= sisusb_last_vc &&
3130 sisusb_last_vc <= MAX_NR_CONSOLES)
3131 initscreen = 0;
3132 #endif
3133 if (sisusb_init_gfxdevice(sisusb, initscreen))
3134 dev_err(&sisusb->sisusb_dev->dev,
3135 "Failed to early initialize device\n");
3136
3137 } else
3138 dev_info(&sisusb->sisusb_dev->dev,
3139 "Not attached to USB 2.0 hub, deferring init\n");
3140
3141 sisusb->ready = 1;
3142
3143 #ifdef SISUSBENDIANTEST
3144 dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST ***\n");
3145 sisusb_testreadwrite(sisusb);
3146 dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST END ***\n");
3147 #endif
3148
3149 #ifdef INCL_SISUSB_CON
3150 sisusb_console_init(sisusb, sisusb_first_vc, sisusb_last_vc);
3151 #endif
3152
3153 return 0;
3154
3155 error_4:
3156 sisusb_free_urbs(sisusb);
3157 error_3:
3158 sisusb_free_buffers(sisusb);
3159 error_2:
3160 usb_deregister_dev(intf, &usb_sisusb_class);
3161 error_1:
3162 kfree(sisusb);
3163 return retval;
3164 }
3165
3166 static void sisusb_disconnect(struct usb_interface *intf)
3167 {
3168 struct sisusb_usb_data *sisusb;
3169
3170 /* This should *not* happen */
3171 sisusb = usb_get_intfdata(intf);
3172 if (!sisusb)
3173 return;
3174
3175 #ifdef INCL_SISUSB_CON
3176 sisusb_console_exit(sisusb);
3177 #endif
3178
3179 usb_deregister_dev(intf, &usb_sisusb_class);
3180
3181 mutex_lock(&sisusb->lock);
3182
3183 /* Wait for all URBs to complete and kill them in case (MUST do) */
3184 if (!sisusb_wait_all_out_complete(sisusb))
3185 sisusb_kill_all_busy(sisusb);
3186
3187 usb_set_intfdata(intf, NULL);
3188
3189 sisusb->present = 0;
3190 sisusb->ready = 0;
3191
3192 mutex_unlock(&sisusb->lock);
3193
3194 /* decrement our usage count */
3195 kref_put(&sisusb->kref, sisusb_delete);
3196 }
3197
3198 static const struct usb_device_id sisusb_table[] = {
3199 { USB_DEVICE(0x0711, 0x0550) },
3200 { USB_DEVICE(0x0711, 0x0900) },
3201 { USB_DEVICE(0x0711, 0x0901) },
3202 { USB_DEVICE(0x0711, 0x0902) },
3203 { USB_DEVICE(0x0711, 0x0903) },
3204 { USB_DEVICE(0x0711, 0x0918) },
3205 { USB_DEVICE(0x0711, 0x0920) },
3206 { USB_DEVICE(0x0711, 0x0950) },
3207 { USB_DEVICE(0x0711, 0x5200) },
3208 { USB_DEVICE(0x182d, 0x021c) },
3209 { USB_DEVICE(0x182d, 0x0269) },
3210 { }
3211 };
3212
3213 MODULE_DEVICE_TABLE(usb, sisusb_table);
3214
3215 static struct usb_driver sisusb_driver = {
3216 .name = "sisusb",
3217 .probe = sisusb_probe,
3218 .disconnect = sisusb_disconnect,
3219 .id_table = sisusb_table,
3220 };
3221
3222 static int __init usb_sisusb_init(void)
3223 {
3224
3225 #ifdef INCL_SISUSB_CON
3226 sisusb_init_concode();
3227 #endif
3228
3229 return usb_register(&sisusb_driver);
3230 }
3231
3232 static void __exit usb_sisusb_exit(void)
3233 {
3234 usb_deregister(&sisusb_driver);
3235 }
3236
3237 module_init(usb_sisusb_init);
3238 module_exit(usb_sisusb_exit);
3239
3240 MODULE_AUTHOR("Thomas Winischhofer <thomas@winischhofer.net>");
3241 MODULE_DESCRIPTION("sisusbvga - Driver for Net2280/SiS315-based USB2VGA dongles");
3242 MODULE_LICENSE("GPL");
3243
Linux kernel - Deliverables
This page took 0.109488 seconds and 5 git commands to generate.