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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
64static int sisusb_first_vc;
65static int sisusb_last_vc;
66module_param_named(first, sisusb_first_vc, int, 0);
67module_param_named(last, sisusb_last_vc, int, 0);
68MODULE_PARM_DESC(first, "Number of first console to take over (1 - MAX_NR_CONSOLES)");
69MODULE_PARM_DESC(last, "Number of last console to take over (1 - MAX_NR_CONSOLES)");
70#endif
71
72static struct usb_driver sisusb_driver;
73
74static 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
86static 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 */
105static 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 */
120static 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) */
136static 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
146static 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
160static 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
170static 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
182static 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
190static 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
212static 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
265static 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
276static 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
328static 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
449static 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
525static 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
561static 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
609static 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
622static 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
659static 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
700static 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
755static 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
968static 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
982static 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
1021static 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
1062static 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
1107static 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
1203int 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
1208int 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
1214int 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
1224int 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
1234int 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
1248static 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
1262int 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
1268int 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
1277int 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
1282int 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
1287int sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
1288 u32 dest, int length, size_t *bytes_written)
1289{
1290 return sisusb_write_mem_bulk(sisusb, dest, src, length,
1291 NULL, 0, bytes_written);
1292}
1293
1294#ifdef SISUSBENDIANTEST
1295int sisusb_read_memory(struct sisusb_usb_data *sisusb, char *dest,
1296 u32 src, int length, size_t *bytes_written)
1297{
1298 return sisusb_read_mem_bulk(sisusb, src, dest, length,
1299 NULL, bytes_written);
1300}
1301#endif
1302#endif
1303
1304#ifdef SISUSBENDIANTEST
1305static void sisusb_testreadwrite(struct sisusb_usb_data *sisusb)
1306{
1307 static char srcbuffer[] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 };
1308 char destbuffer[10];
1309 size_t dummy;
1310 int i, j;
1311
1312 sisusb_copy_memory(sisusb, srcbuffer, sisusb->vrambase, 7, &dummy);
1313
1314 for (i = 1; i <= 7; i++) {
1315 dev_dbg(&sisusb->sisusb_dev->dev,
1316 "sisusb: rwtest %d bytes\n", i);
1317 sisusb_read_memory(sisusb, destbuffer, sisusb->vrambase,
1318 i, &dummy);
1319 for (j = 0; j < i; j++) {
1320 dev_dbg(&sisusb->sisusb_dev->dev,
1321 "rwtest read[%d] = %x\n",
1322 j, destbuffer[j]);
1323 }
1324 }
1325}
1326#endif
1327
1328/* access pci config registers (reg numbers 0, 4, 8, etc) */
1329
1330static int sisusb_write_pci_config(struct sisusb_usb_data *sisusb,
1331 int regnum, u32 data)
1332{
1333 struct sisusb_packet packet;
1334 int ret;
1335
1336 packet.header = 0x008f;
1337 packet.address = regnum | 0x10000;
1338 packet.data = data;
1339 ret = sisusb_send_packet(sisusb, 10, &packet);
1340 return ret;
1341}
1342
1343static int sisusb_read_pci_config(struct sisusb_usb_data *sisusb,
1344 int regnum, u32 *data)
1345{
1346 struct sisusb_packet packet;
1347 int ret;
1348
1349 packet.header = 0x008f;
1350 packet.address = (u32)regnum | 0x10000;
1351 ret = sisusb_send_packet(sisusb, 6, &packet);
1352 *data = packet.data;
1353 return ret;
1354}
1355
1356/* Clear video RAM */
1357
1358static int sisusb_clear_vram(struct sisusb_usb_data *sisusb,
1359 u32 address, int length)
1360{
1361 int ret, i;
1362 ssize_t j;
1363
1364 if (address < sisusb->vrambase)
1365 return 1;
1366
1367 if (address >= sisusb->vrambase + sisusb->vramsize)
1368 return 1;
1369
1370 if (address + length > sisusb->vrambase + sisusb->vramsize)
1371 length = sisusb->vrambase + sisusb->vramsize - address;
1372
1373 if (length <= 0)
1374 return 0;
1375
1376 /* allocate free buffer/urb and clear the buffer */
1377 i = sisusb_alloc_outbuf(sisusb);
1378 if (i < 0)
1379 return -EBUSY;
1380
1381 memset(sisusb->obuf[i], 0, sisusb->obufsize);
1382
1383 /* We can write a length > buffer size here. The buffer
1384 * data will simply be re-used (like a ring-buffer).
1385 */
1386 ret = sisusb_write_mem_bulk(sisusb, address, NULL, length, NULL, i, &j);
1387
1388 /* Free the buffer/urb */
1389 sisusb_free_outbuf(sisusb, i);
1390
1391 return ret;
1392}
1393
1394/* Initialize the graphics core (return 0 on success)
1395 * This resets the graphics hardware and puts it into
1396 * a defined mode (640x480@60Hz)
1397 */
1398
1399#define GETREG(r, d) sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
1400#define SETREG(r, d) sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
1401#define SETIREG(r, i, d) sisusb_setidxreg(sisusb, r, i, d)
1402#define GETIREG(r, i, d) sisusb_getidxreg(sisusb, r, i, d)
1403#define SETIREGOR(r, i, o) sisusb_setidxregor(sisusb, r, i, o)
1404#define SETIREGAND(r, i, a) sisusb_setidxregand(sisusb, r, i, a)
1405#define SETIREGANDOR(r, i, a, o) sisusb_setidxregandor(sisusb, r, i, a, o)
1406#define READL(a, d) sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
1407#define WRITEL(a, d) sisusb_write_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
1408#define READB(a, d) sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
1409#define WRITEB(a, d) sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
1410
1411static int sisusb_triggersr16(struct sisusb_usb_data *sisusb, u8 ramtype)
1412{
1413 int ret;
1414 u8 tmp8;
1415
1416 ret = GETIREG(SISSR, 0x16, &tmp8);
1417 if (ramtype <= 1) {
1418 tmp8 &= 0x3f;
1419 ret |= SETIREG(SISSR, 0x16, tmp8);
1420 tmp8 |= 0x80;
1421 ret |= SETIREG(SISSR, 0x16, tmp8);
1422 } else {
1423 tmp8 |= 0xc0;
1424 ret |= SETIREG(SISSR, 0x16, tmp8);
1425 tmp8 &= 0x0f;
1426 ret |= SETIREG(SISSR, 0x16, tmp8);
1427 tmp8 |= 0x80;
1428 ret |= SETIREG(SISSR, 0x16, tmp8);
1429 tmp8 &= 0x0f;
1430 ret |= SETIREG(SISSR, 0x16, tmp8);
1431 tmp8 |= 0xd0;
1432 ret |= SETIREG(SISSR, 0x16, tmp8);
1433 tmp8 &= 0x0f;
1434 ret |= SETIREG(SISSR, 0x16, tmp8);
1435 tmp8 |= 0xa0;
1436 ret |= SETIREG(SISSR, 0x16, tmp8);
1437 }
1438 return ret;
1439}
1440
1441static int sisusb_getbuswidth(struct sisusb_usb_data *sisusb,
1442 int *bw, int *chab)
1443{
1444 int ret;
1445 u8 ramtype, done = 0;
1446 u32 t0, t1, t2, t3;
1447 u32 ramptr = SISUSB_PCI_MEMBASE;
1448
1449 ret = GETIREG(SISSR, 0x3a, &ramtype);
1450 ramtype &= 3;
1451
1452 ret |= SETIREG(SISSR, 0x13, 0x00);
1453
1454 if (ramtype <= 1) {
1455 ret |= SETIREG(SISSR, 0x14, 0x12);
1456 ret |= SETIREGAND(SISSR, 0x15, 0xef);
1457 } else {
1458 ret |= SETIREG(SISSR, 0x14, 0x02);
1459 }
1460
1461 ret |= sisusb_triggersr16(sisusb, ramtype);
1462 ret |= WRITEL(ramptr + 0, 0x01234567);
1463 ret |= WRITEL(ramptr + 4, 0x456789ab);
1464 ret |= WRITEL(ramptr + 8, 0x89abcdef);
1465 ret |= WRITEL(ramptr + 12, 0xcdef0123);
1466 ret |= WRITEL(ramptr + 16, 0x55555555);
1467 ret |= WRITEL(ramptr + 20, 0x55555555);
1468 ret |= WRITEL(ramptr + 24, 0xffffffff);
1469 ret |= WRITEL(ramptr + 28, 0xffffffff);
1470 ret |= READL(ramptr + 0, &t0);
1471 ret |= READL(ramptr + 4, &t1);
1472 ret |= READL(ramptr + 8, &t2);
1473 ret |= READL(ramptr + 12, &t3);
1474
1475 if (ramtype <= 1) {
1476
1477 *chab = 0; *bw = 64;
1478
1479 if ((t3 != 0xcdef0123) || (t2 != 0x89abcdef)) {
1480 if ((t1 == 0x456789ab) && (t0 == 0x01234567)) {
1481 *chab = 0; *bw = 64;
1482 ret |= SETIREGAND(SISSR, 0x14, 0xfd);
1483 }
1484 }
1485 if ((t1 != 0x456789ab) || (t0 != 0x01234567)) {
1486 *chab = 1; *bw = 64;
1487 ret |= SETIREGANDOR(SISSR, 0x14, 0xfc, 0x01);
1488
1489 ret |= sisusb_triggersr16(sisusb, ramtype);
1490 ret |= WRITEL(ramptr + 0, 0x89abcdef);
1491 ret |= WRITEL(ramptr + 4, 0xcdef0123);
1492 ret |= WRITEL(ramptr + 8, 0x55555555);
1493 ret |= WRITEL(ramptr + 12, 0x55555555);
1494 ret |= WRITEL(ramptr + 16, 0xaaaaaaaa);
1495 ret |= WRITEL(ramptr + 20, 0xaaaaaaaa);
1496 ret |= READL(ramptr + 4, &t1);
1497
1498 if (t1 != 0xcdef0123) {
1499 *bw = 32;
1500 ret |= SETIREGOR(SISSR, 0x15, 0x10);
1501 }
1502 }
1503
1504 } else {
1505
1506 *chab = 0; *bw = 64; /* default: cha, bw = 64 */
1507
1508 done = 0;
1509
1510 if (t1 == 0x456789ab) {
1511 if (t0 == 0x01234567) {
1512 *chab = 0; *bw = 64;
1513 done = 1;
1514 }
1515 } else {
1516 if (t0 == 0x01234567) {
1517 *chab = 0; *bw = 32;
1518 ret |= SETIREG(SISSR, 0x14, 0x00);
1519 done = 1;
1520 }
1521 }
1522
1523 if (!done) {
1524 ret |= SETIREG(SISSR, 0x14, 0x03);
1525 ret |= sisusb_triggersr16(sisusb, ramtype);
1526
1527 ret |= WRITEL(ramptr + 0, 0x01234567);
1528 ret |= WRITEL(ramptr + 4, 0x456789ab);
1529 ret |= WRITEL(ramptr + 8, 0x89abcdef);
1530 ret |= WRITEL(ramptr + 12, 0xcdef0123);
1531 ret |= WRITEL(ramptr + 16, 0x55555555);
1532 ret |= WRITEL(ramptr + 20, 0x55555555);
1533 ret |= WRITEL(ramptr + 24, 0xffffffff);
1534 ret |= WRITEL(ramptr + 28, 0xffffffff);
1535 ret |= READL(ramptr + 0, &t0);
1536 ret |= READL(ramptr + 4, &t1);
1537
1538 if (t1 == 0x456789ab) {
1539 if (t0 == 0x01234567) {
1540 *chab = 1; *bw = 64;
1541 return ret;
1542 } /* else error */
1543 } else {
1544 if (t0 == 0x01234567) {
1545 *chab = 1; *bw = 32;
1546 ret |= SETIREG(SISSR, 0x14, 0x01);
1547 } /* else error */
1548 }
1549 }
1550 }
1551 return ret;
1552}
1553
1554static int sisusb_verify_mclk(struct sisusb_usb_data *sisusb)
1555{
1556 int ret = 0;
1557 u32 ramptr = SISUSB_PCI_MEMBASE;
1558 u8 tmp1, tmp2, i, j;
1559
1560 ret |= WRITEB(ramptr, 0xaa);
1561 ret |= WRITEB(ramptr + 16, 0x55);
1562 ret |= READB(ramptr, &tmp1);
1563 ret |= READB(ramptr + 16, &tmp2);
1564 if ((tmp1 != 0xaa) || (tmp2 != 0x55)) {
1565 for (i = 0, j = 16; i < 2; i++, j += 16) {
1566 ret |= GETIREG(SISSR, 0x21, &tmp1);
1567 ret |= SETIREGAND(SISSR, 0x21, (tmp1 & 0xfb));
1568 ret |= SETIREGOR(SISSR, 0x3c, 0x01); /* not on 330 */
1569 ret |= SETIREGAND(SISSR, 0x3c, 0xfe); /* not on 330 */
1570 ret |= SETIREG(SISSR, 0x21, tmp1);
1571 ret |= WRITEB(ramptr + 16 + j, j);
1572 ret |= READB(ramptr + 16 + j, &tmp1);
1573 if (tmp1 == j) {
1574 ret |= WRITEB(ramptr + j, j);
1575 break;
1576 }
1577 }
1578 }
1579 return ret;
1580}
1581
1582static int sisusb_set_rank(struct sisusb_usb_data *sisusb, int *iret,
1583 int index, u8 rankno, u8 chab, const u8 dramtype[][5], int bw)
1584{
1585 int ret = 0, ranksize;
1586 u8 tmp;
1587
1588 *iret = 0;
1589
1590 if ((rankno == 2) && (dramtype[index][0] == 2))
1591 return ret;
1592
1593 ranksize = dramtype[index][3] / 2 * bw / 32;
1594
1595 if ((ranksize * rankno) > 128)
1596 return ret;
1597
1598 tmp = 0;
1599 while ((ranksize >>= 1) > 0)
1600 tmp += 0x10;
1601
1602 tmp |= ((rankno - 1) << 2);
1603 tmp |= ((bw / 64) & 0x02);
1604 tmp |= (chab & 0x01);
1605
1606 ret = SETIREG(SISSR, 0x14, tmp);
1607 ret |= sisusb_triggersr16(sisusb, 0); /* sic! */
1608
1609 *iret = 1;
1610
1611 return ret;
1612}
1613
1614static int sisusb_check_rbc(struct sisusb_usb_data *sisusb, int *iret,
1615 u32 inc, int testn)
1616{
1617 int ret = 0, i;
1618 u32 j, tmp;
1619
1620 *iret = 0;
1621
1622 for (i = 0, j = 0; i < testn; i++) {
1623 ret |= WRITEL(sisusb->vrambase + j, j);
1624 j += inc;
1625 }
1626
1627 for (i = 0, j = 0; i < testn; i++) {
1628 ret |= READL(sisusb->vrambase + j, &tmp);
1629 if (tmp != j)
1630 return ret;
1631
1632 j += inc;
1633 }
1634
1635 *iret = 1;
1636 return ret;
1637}
1638
1639static int sisusb_check_ranks(struct sisusb_usb_data *sisusb,
1640 int *iret, int rankno, int idx, int bw, const u8 rtype[][5])
1641{
1642 int ret = 0, i, i2ret;
1643 u32 inc;
1644
1645 *iret = 0;
1646
1647 for (i = rankno; i >= 1; i--) {
1648 inc = 1 << (rtype[idx][2] + rtype[idx][1] + rtype[idx][0] +
1649 bw / 64 + i);
1650 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
1651 if (!i2ret)
1652 return ret;
1653 }
1654
1655 inc = 1 << (rtype[idx][2] + bw / 64 + 2);
1656 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 4);
1657 if (!i2ret)
1658 return ret;
1659
1660 inc = 1 << (10 + bw / 64);
1661 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
1662 if (!i2ret)
1663 return ret;
1664
1665 *iret = 1;
1666 return ret;
1667}
1668
1669static int sisusb_get_sdram_size(struct sisusb_usb_data *sisusb, int *iret,
1670 int bw, int chab)
1671{
1672 int ret = 0, i2ret = 0, i, j;
1673 static const u8 sdramtype[13][5] = {
1674 { 2, 12, 9, 64, 0x35 },
1675 { 1, 13, 9, 64, 0x44 },
1676 { 2, 12, 8, 32, 0x31 },
1677 { 2, 11, 9, 32, 0x25 },
1678 { 1, 12, 9, 32, 0x34 },
1679 { 1, 13, 8, 32, 0x40 },
1680 { 2, 11, 8, 16, 0x21 },
1681 { 1, 12, 8, 16, 0x30 },
1682 { 1, 11, 9, 16, 0x24 },
1683 { 1, 11, 8, 8, 0x20 },
1684 { 2, 9, 8, 4, 0x01 },
1685 { 1, 10, 8, 4, 0x10 },
1686 { 1, 9, 8, 2, 0x00 }
1687 };
1688
1689 *iret = 1; /* error */
1690
1691 for (i = 0; i < 13; i++) {
1692 ret |= SETIREGANDOR(SISSR, 0x13, 0x80, sdramtype[i][4]);
1693 for (j = 2; j > 0; j--) {
1694 ret |= sisusb_set_rank(sisusb, &i2ret, i, j, chab,
1695 sdramtype, bw);
1696 if (!i2ret)
1697 continue;
1698
1699 ret |= sisusb_check_ranks(sisusb, &i2ret, j, i, bw,
1700 sdramtype);
1701 if (i2ret) {
1702 *iret = 0; /* ram size found */
1703 return ret;
1704 }
1705 }
1706 }
1707
1708 return ret;
1709}
1710
1711static int sisusb_setup_screen(struct sisusb_usb_data *sisusb,
1712 int clrall, int drwfr)
1713{
1714 int ret = 0;
1715 u32 address;
1716 int i, length, modex, modey, bpp;
1717
1718 modex = 640; modey = 480; bpp = 2;
1719
1720 address = sisusb->vrambase; /* Clear video ram */
1721
1722 if (clrall)
1723 length = sisusb->vramsize;
1724 else
1725 length = modex * bpp * modey;
1726
1727 ret = sisusb_clear_vram(sisusb, address, length);
1728
1729 if (!ret && drwfr) {
1730 for (i = 0; i < modex; i++) {
1731 address = sisusb->vrambase + (i * bpp);
1732 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1733 address, 0xf100);
1734 address += (modex * (modey-1) * bpp);
1735 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1736 address, 0xf100);
1737 }
1738 for (i = 0; i < modey; i++) {
1739 address = sisusb->vrambase + ((i * modex) * bpp);
1740 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1741 address, 0xf100);
1742 address += ((modex - 1) * bpp);
1743 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1744 address, 0xf100);
1745 }
1746 }
1747
1748 return ret;
1749}
1750
1751static int sisusb_set_default_mode(struct sisusb_usb_data *sisusb,
1752 int touchengines)
1753{
1754 int ret = 0, i, j, modex, modey, bpp, du;
1755 u8 sr31, cr63, tmp8;
1756 static const char attrdata[] = {
1757 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
1758 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
1759 0x01, 0x00, 0x00, 0x00
1760 };
1761 static const char crtcrdata[] = {
1762 0x5f, 0x4f, 0x50, 0x82, 0x54, 0x80, 0x0b, 0x3e,
1763 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1764 0xea, 0x8c, 0xdf, 0x28, 0x40, 0xe7, 0x04, 0xa3,
1765 0xff
1766 };
1767 static const char grcdata[] = {
1768 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0f,
1769 0xff
1770 };
1771 static const char crtcdata[] = {
1772 0x5f, 0x4f, 0x4f, 0x83, 0x55, 0x81, 0x0b, 0x3e,
1773 0xe9, 0x8b, 0xdf, 0xe8, 0x0c, 0x00, 0x00, 0x05,
1774 0x00
1775 };
1776
1777 modex = 640; modey = 480; bpp = 2;
1778
1779 GETIREG(SISSR, 0x31, &sr31);
1780 GETIREG(SISCR, 0x63, &cr63);
1781 SETIREGOR(SISSR, 0x01, 0x20);
1782 SETIREG(SISCR, 0x63, cr63 & 0xbf);
1783 SETIREGOR(SISCR, 0x17, 0x80);
1784 SETIREGOR(SISSR, 0x1f, 0x04);
1785 SETIREGAND(SISSR, 0x07, 0xfb);
1786 SETIREG(SISSR, 0x00, 0x03); /* seq */
1787 SETIREG(SISSR, 0x01, 0x21);
1788 SETIREG(SISSR, 0x02, 0x0f);
1789 SETIREG(SISSR, 0x03, 0x00);
1790 SETIREG(SISSR, 0x04, 0x0e);
1791 SETREG(SISMISCW, 0x23); /* misc */
1792 for (i = 0; i <= 0x18; i++) { /* crtc */
1793 SETIREG(SISCR, i, crtcrdata[i]);
1794 }
1795 for (i = 0; i <= 0x13; i++) { /* att */
1796 GETREG(SISINPSTAT, &tmp8);
1797 SETREG(SISAR, i);
1798 SETREG(SISAR, attrdata[i]);
1799 }
1800 GETREG(SISINPSTAT, &tmp8);
1801 SETREG(SISAR, 0x14);
1802 SETREG(SISAR, 0x00);
1803 GETREG(SISINPSTAT, &tmp8);
1804 SETREG(SISAR, 0x20);
1805 GETREG(SISINPSTAT, &tmp8);
1806 for (i = 0; i <= 0x08; i++) { /* grc */
1807 SETIREG(SISGR, i, grcdata[i]);
1808 }
1809 SETIREGAND(SISGR, 0x05, 0xbf);
1810 for (i = 0x0A; i <= 0x0E; i++) { /* clr ext */
1811 SETIREG(SISSR, i, 0x00);
1812 }
1813 SETIREGAND(SISSR, 0x37, 0xfe);
1814 SETREG(SISMISCW, 0xef); /* sync */
1815 SETIREG(SISCR, 0x11, 0x00); /* crtc */
1816 for (j = 0x00, i = 0; i <= 7; i++, j++)
1817 SETIREG(SISCR, j, crtcdata[i]);
1818
1819 for (j = 0x10; i <= 10; i++, j++)
1820 SETIREG(SISCR, j, crtcdata[i]);
1821
1822 for (j = 0x15; i <= 12; i++, j++)
1823 SETIREG(SISCR, j, crtcdata[i]);
1824
1825 for (j = 0x0A; i <= 15; i++, j++)
1826 SETIREG(SISSR, j, crtcdata[i]);
1827
1828 SETIREG(SISSR, 0x0E, (crtcdata[16] & 0xE0));
1829 SETIREGANDOR(SISCR, 0x09, 0x5f, ((crtcdata[16] & 0x01) << 5));
1830 SETIREG(SISCR, 0x14, 0x4f);
1831 du = (modex / 16) * (bpp * 2); /* offset/pitch */
1832 if (modex % 16)
1833 du += bpp;
1834
1835 SETIREGANDOR(SISSR, 0x0e, 0xf0, ((du >> 8) & 0x0f));
1836 SETIREG(SISCR, 0x13, (du & 0xff));
1837 du <<= 5;
1838 tmp8 = du >> 8;
1839 if (du & 0xff)
1840 tmp8++;
1841
1842 SETIREG(SISSR, 0x10, tmp8);
1843 SETIREG(SISSR, 0x31, 0x00); /* VCLK */
1844 SETIREG(SISSR, 0x2b, 0x1b);
1845 SETIREG(SISSR, 0x2c, 0xe1);
1846 SETIREG(SISSR, 0x2d, 0x01);
1847 SETIREGAND(SISSR, 0x3d, 0xfe); /* FIFO */
1848 SETIREG(SISSR, 0x08, 0xae);
1849 SETIREGAND(SISSR, 0x09, 0xf0);
1850 SETIREG(SISSR, 0x08, 0x34);
1851 SETIREGOR(SISSR, 0x3d, 0x01);
1852 SETIREGAND(SISSR, 0x1f, 0x3f); /* mode regs */
1853 SETIREGANDOR(SISSR, 0x06, 0xc0, 0x0a);
1854 SETIREG(SISCR, 0x19, 0x00);
1855 SETIREGAND(SISCR, 0x1a, 0xfc);
1856 SETIREGAND(SISSR, 0x0f, 0xb7);
1857 SETIREGAND(SISSR, 0x31, 0xfb);
1858 SETIREGANDOR(SISSR, 0x21, 0x1f, 0xa0);
1859 SETIREGAND(SISSR, 0x32, 0xf3);
1860 SETIREGANDOR(SISSR, 0x07, 0xf8, 0x03);
1861 SETIREG(SISCR, 0x52, 0x6c);
1862
1863 SETIREG(SISCR, 0x0d, 0x00); /* adjust frame */
1864 SETIREG(SISCR, 0x0c, 0x00);
1865 SETIREG(SISSR, 0x0d, 0x00);
1866 SETIREGAND(SISSR, 0x37, 0xfe);
1867
1868 SETIREG(SISCR, 0x32, 0x20);
1869 SETIREGAND(SISSR, 0x01, 0xdf); /* enable display */
1870 SETIREG(SISCR, 0x63, (cr63 & 0xbf));
1871 SETIREG(SISSR, 0x31, (sr31 & 0xfb));
1872
1873 if (touchengines) {
1874 SETIREG(SISSR, 0x20, 0xa1); /* enable engines */
1875 SETIREGOR(SISSR, 0x1e, 0x5a);
1876
1877 SETIREG(SISSR, 0x26, 0x01); /* disable cmdqueue */
1878 SETIREG(SISSR, 0x27, 0x1f);
1879 SETIREG(SISSR, 0x26, 0x00);
1880 }
1881
1882 SETIREG(SISCR, 0x34, 0x44); /* we just set std mode #44 */
1883
1884 return ret;
1885}
1886
1887static int sisusb_init_gfxcore(struct sisusb_usb_data *sisusb)
1888{
1889 int ret = 0, i, j, bw, chab, iret, retry = 3;
1890 u8 tmp8, ramtype;
1891 u32 tmp32;
1892 static const char mclktable[] = {
1893 0x3b, 0x22, 0x01, 143,
1894 0x3b, 0x22, 0x01, 143,
1895 0x3b, 0x22, 0x01, 143,
1896 0x3b, 0x22, 0x01, 143
1897 };
1898 static const char eclktable[] = {
1899 0x3b, 0x22, 0x01, 143,
1900 0x3b, 0x22, 0x01, 143,
1901 0x3b, 0x22, 0x01, 143,
1902 0x3b, 0x22, 0x01, 143
1903 };
1904 static const char ramtypetable1[] = {
1905 0x00, 0x04, 0x60, 0x60,
1906 0x0f, 0x0f, 0x1f, 0x1f,
1907 0xba, 0xba, 0xba, 0xba,
1908 0xa9, 0xa9, 0xac, 0xac,
1909 0xa0, 0xa0, 0xa0, 0xa8,
1910 0x00, 0x00, 0x02, 0x02,
1911 0x30, 0x30, 0x40, 0x40
1912 };
1913 static const char ramtypetable2[] = {
1914 0x77, 0x77, 0x44, 0x44,
1915 0x77, 0x77, 0x44, 0x44,
1916 0x00, 0x00, 0x00, 0x00,
1917 0x5b, 0x5b, 0xab, 0xab,
1918 0x00, 0x00, 0xf0, 0xf8
1919 };
1920
1921 while (retry--) {
1922
1923 /* Enable VGA */
1924 ret = GETREG(SISVGAEN, &tmp8);
1925 ret |= SETREG(SISVGAEN, (tmp8 | 0x01));
1926
1927 /* Enable GPU access to VRAM */
1928 ret |= GETREG(SISMISCR, &tmp8);
1929 ret |= SETREG(SISMISCW, (tmp8 | 0x01));
1930
1931 if (ret)
1932 continue;
1933
1934 /* Reset registers */
1935 ret |= SETIREGAND(SISCR, 0x5b, 0xdf);
1936 ret |= SETIREG(SISSR, 0x05, 0x86);
1937 ret |= SETIREGOR(SISSR, 0x20, 0x01);
1938
1939 ret |= SETREG(SISMISCW, 0x67);
1940
1941 for (i = 0x06; i <= 0x1f; i++)
1942 ret |= SETIREG(SISSR, i, 0x00);
1943
1944 for (i = 0x21; i <= 0x27; i++)
1945 ret |= SETIREG(SISSR, i, 0x00);
1946
1947 for (i = 0x31; i <= 0x3d; i++)
1948 ret |= SETIREG(SISSR, i, 0x00);
1949
1950 for (i = 0x12; i <= 0x1b; i++)
1951 ret |= SETIREG(SISSR, i, 0x00);
1952
1953 for (i = 0x79; i <= 0x7c; i++)
1954 ret |= SETIREG(SISCR, i, 0x00);
1955
1956 if (ret)
1957 continue;
1958
1959 ret |= SETIREG(SISCR, 0x63, 0x80);
1960
1961 ret |= GETIREG(SISSR, 0x3a, &ramtype);
1962 ramtype &= 0x03;
1963
1964 ret |= SETIREG(SISSR, 0x28, mclktable[ramtype * 4]);
1965 ret |= SETIREG(SISSR, 0x29, mclktable[(ramtype * 4) + 1]);
1966 ret |= SETIREG(SISSR, 0x2a, mclktable[(ramtype * 4) + 2]);
1967
1968 ret |= SETIREG(SISSR, 0x2e, eclktable[ramtype * 4]);
1969 ret |= SETIREG(SISSR, 0x2f, eclktable[(ramtype * 4) + 1]);
1970 ret |= SETIREG(SISSR, 0x30, eclktable[(ramtype * 4) + 2]);
1971
1972 ret |= SETIREG(SISSR, 0x07, 0x18);
1973 ret |= SETIREG(SISSR, 0x11, 0x0f);
1974
1975 if (ret)
1976 continue;
1977
1978 for (i = 0x15, j = 0; i <= 0x1b; i++, j++) {
1979 ret |= SETIREG(SISSR, i,
1980 ramtypetable1[(j*4) + ramtype]);
1981 }
1982 for (i = 0x40, j = 0; i <= 0x44; i++, j++) {
1983 ret |= SETIREG(SISCR, i,
1984 ramtypetable2[(j*4) + ramtype]);
1985 }
1986
1987 ret |= SETIREG(SISCR, 0x49, 0xaa);
1988
1989 ret |= SETIREG(SISSR, 0x1f, 0x00);
1990 ret |= SETIREG(SISSR, 0x20, 0xa0);
1991 ret |= SETIREG(SISSR, 0x23, 0xf6);
1992 ret |= SETIREG(SISSR, 0x24, 0x0d);
1993 ret |= SETIREG(SISSR, 0x25, 0x33);
1994
1995 ret |= SETIREG(SISSR, 0x11, 0x0f);
1996
1997 ret |= SETIREGOR(SISPART1, 0x2f, 0x01);
1998
1999 ret |= SETIREGAND(SISCAP, 0x3f, 0xef);
2000
2001 if (ret)
2002 continue;
2003
2004 ret |= SETIREG(SISPART1, 0x00, 0x00);
2005
2006 ret |= GETIREG(SISSR, 0x13, &tmp8);
2007 tmp8 >>= 4;
2008
2009 ret |= SETIREG(SISPART1, 0x02, 0x00);
2010 ret |= SETIREG(SISPART1, 0x2e, 0x08);
2011
2012 ret |= sisusb_read_pci_config(sisusb, 0x50, &tmp32);
2013 tmp32 &= 0x00f00000;
2014 tmp8 = (tmp32 == 0x100000) ? 0x33 : 0x03;
2015 ret |= SETIREG(SISSR, 0x25, tmp8);
2016 tmp8 = (tmp32 == 0x100000) ? 0xaa : 0x88;
2017 ret |= SETIREG(SISCR, 0x49, tmp8);
2018
2019 ret |= SETIREG(SISSR, 0x27, 0x1f);
2020 ret |= SETIREG(SISSR, 0x31, 0x00);
2021 ret |= SETIREG(SISSR, 0x32, 0x11);
2022 ret |= SETIREG(SISSR, 0x33, 0x00);
2023
2024 if (ret)
2025 continue;
2026
2027 ret |= SETIREG(SISCR, 0x83, 0x00);
2028
2029 ret |= sisusb_set_default_mode(sisusb, 0);
2030
2031 ret |= SETIREGAND(SISSR, 0x21, 0xdf);
2032 ret |= SETIREGOR(SISSR, 0x01, 0x20);
2033 ret |= SETIREGOR(SISSR, 0x16, 0x0f);
2034
2035 ret |= sisusb_triggersr16(sisusb, ramtype);
2036
2037 /* Disable refresh */
2038 ret |= SETIREGAND(SISSR, 0x17, 0xf8);
2039 ret |= SETIREGOR(SISSR, 0x19, 0x03);
2040
2041 ret |= sisusb_getbuswidth(sisusb, &bw, &chab);
2042 ret |= sisusb_verify_mclk(sisusb);
2043
2044 if (ramtype <= 1) {
2045 ret |= sisusb_get_sdram_size(sisusb, &iret, bw, chab);
2046 if (iret) {
2047 dev_err(&sisusb->sisusb_dev->dev,
2048 "RAM size detection failed, assuming 8MB video RAM\n");
2049 ret |= SETIREG(SISSR, 0x14, 0x31);
2050 /* TODO */
2051 }
2052 } else {
2053 dev_err(&sisusb->sisusb_dev->dev,
2054 "DDR RAM device found, assuming 8MB video RAM\n");
2055 ret |= SETIREG(SISSR, 0x14, 0x31);
2056 /* *** TODO *** */
2057 }
2058
2059 /* Enable refresh */
2060 ret |= SETIREG(SISSR, 0x16, ramtypetable1[4 + ramtype]);
2061 ret |= SETIREG(SISSR, 0x17, ramtypetable1[8 + ramtype]);
2062 ret |= SETIREG(SISSR, 0x19, ramtypetable1[16 + ramtype]);
2063
2064 ret |= SETIREGOR(SISSR, 0x21, 0x20);
2065
2066 ret |= SETIREG(SISSR, 0x22, 0xfb);
2067 ret |= SETIREG(SISSR, 0x21, 0xa5);
2068
2069 if (ret == 0)
2070 break;
2071 }
2072
2073 return ret;
2074}
2075
2076#undef SETREG
2077#undef GETREG
2078#undef SETIREG
2079#undef GETIREG
2080#undef SETIREGOR
2081#undef SETIREGAND
2082#undef SETIREGANDOR
2083#undef READL
2084#undef WRITEL
2085
2086static void sisusb_get_ramconfig(struct sisusb_usb_data *sisusb)
2087{
2088 u8 tmp8, tmp82, ramtype;
2089 int bw = 0;
2090 char *ramtypetext1 = NULL;
2091 static const char ram_datarate[4] = {'S', 'S', 'D', 'D'};
2092 static const char ram_dynamictype[4] = {'D', 'G', 'D', 'G'};
2093 static const int busSDR[4] = {64, 64, 128, 128};
2094 static const int busDDR[4] = {32, 32, 64, 64};
2095 static const int busDDRA[4] = {64+32, 64+32, (64+32)*2, (64+32)*2};
2096
2097 sisusb_getidxreg(sisusb, SISSR, 0x14, &tmp8);
2098 sisusb_getidxreg(sisusb, SISSR, 0x15, &tmp82);
2099 sisusb_getidxreg(sisusb, SISSR, 0x3a, &ramtype);
2100 sisusb->vramsize = (1 << ((tmp8 & 0xf0) >> 4)) * 1024 * 1024;
2101 ramtype &= 0x03;
2102 switch ((tmp8 >> 2) & 0x03) {
2103 case 0:
2104 ramtypetext1 = "1 ch/1 r";
2105 if (tmp82 & 0x10)
2106 bw = 32;
2107 else
2108 bw = busSDR[(tmp8 & 0x03)];
2109
2110 break;
2111 case 1:
2112 ramtypetext1 = "1 ch/2 r";
2113 sisusb->vramsize <<= 1;
2114 bw = busSDR[(tmp8 & 0x03)];
2115 break;
2116 case 2:
2117 ramtypetext1 = "asymmeric";
2118 sisusb->vramsize += sisusb->vramsize/2;
2119 bw = busDDRA[(tmp8 & 0x03)];
2120 break;
2121 case 3:
2122 ramtypetext1 = "2 channel";
2123 sisusb->vramsize <<= 1;
2124 bw = busDDR[(tmp8 & 0x03)];
2125 break;
2126 }
2127
2128 dev_info(&sisusb->sisusb_dev->dev,
2129 "%dMB %s %cDR S%cRAM, bus width %d\n",
2130 sisusb->vramsize >> 20, ramtypetext1,
2131 ram_datarate[ramtype], ram_dynamictype[ramtype], bw);
2132}
2133
2134static int sisusb_do_init_gfxdevice(struct sisusb_usb_data *sisusb)
2135{
2136 struct sisusb_packet packet;
2137 int ret;
2138 u32 tmp32;
2139
2140 /* Do some magic */
2141 packet.header = 0x001f;
2142 packet.address = 0x00000324;
2143 packet.data = 0x00000004;
2144 ret = sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2145
2146 packet.header = 0x001f;
2147 packet.address = 0x00000364;
2148 packet.data = 0x00000004;
2149 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2150
2151 packet.header = 0x001f;
2152 packet.address = 0x00000384;
2153 packet.data = 0x00000004;
2154 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2155
2156 packet.header = 0x001f;
2157 packet.address = 0x00000100;
2158 packet.data = 0x00000700;
2159 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2160
2161 packet.header = 0x000f;
2162 packet.address = 0x00000004;
2163 ret |= sisusb_send_bridge_packet(sisusb, 6, &packet, 0);
2164 packet.data |= 0x17;
2165 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2166
2167 /* Init BAR 0 (VRAM) */
2168 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2169 ret |= sisusb_write_pci_config(sisusb, 0x10, 0xfffffff0);
2170 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2171 tmp32 &= 0x0f;
2172 tmp32 |= SISUSB_PCI_MEMBASE;
2173 ret |= sisusb_write_pci_config(sisusb, 0x10, tmp32);
2174
2175 /* Init BAR 1 (MMIO) */
2176 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2177 ret |= sisusb_write_pci_config(sisusb, 0x14, 0xfffffff0);
2178 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2179 tmp32 &= 0x0f;
2180 tmp32 |= SISUSB_PCI_MMIOBASE;
2181 ret |= sisusb_write_pci_config(sisusb, 0x14, tmp32);
2182
2183 /* Init BAR 2 (i/o ports) */
2184 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2185 ret |= sisusb_write_pci_config(sisusb, 0x18, 0xfffffff0);
2186 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2187 tmp32 &= 0x0f;
2188 tmp32 |= SISUSB_PCI_IOPORTBASE;
2189 ret |= sisusb_write_pci_config(sisusb, 0x18, tmp32);
2190
2191 /* Enable memory and i/o access */
2192 ret |= sisusb_read_pci_config(sisusb, 0x04, &tmp32);
2193 tmp32 |= 0x3;
2194 ret |= sisusb_write_pci_config(sisusb, 0x04, tmp32);
2195
2196 if (ret == 0) {
2197 /* Some further magic */
2198 packet.header = 0x001f;
2199 packet.address = 0x00000050;
2200 packet.data = 0x000000ff;
2201 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2202 }
2203
2204 return ret;
2205}
2206
2207/* Initialize the graphics device (return 0 on success)
2208 * This initializes the net2280 as well as the PCI registers
2209 * of the graphics board.
2210 */
2211
2212static int sisusb_init_gfxdevice(struct sisusb_usb_data *sisusb, int initscreen)
2213{
2214 int ret = 0, test = 0;
2215 u32 tmp32;
2216
2217 if (sisusb->devinit == 1) {
2218 /* Read PCI BARs and see if they have been set up */
2219 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2220 if (ret)
2221 return ret;
2222
2223 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MEMBASE)
2224 test++;
2225
2226 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2227 if (ret)
2228 return ret;
2229
2230 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MMIOBASE)
2231 test++;
2232
2233 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2234 if (ret)
2235 return ret;
2236
2237 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_IOPORTBASE)
2238 test++;
2239 }
2240
2241 /* No? So reset the device */
2242 if ((sisusb->devinit == 0) || (test != 3)) {
2243
2244 ret |= sisusb_do_init_gfxdevice(sisusb);
2245
2246 if (ret == 0)
2247 sisusb->devinit = 1;
2248
2249 }
2250
2251 if (sisusb->devinit) {
2252 /* Initialize the graphics core */
2253 if (sisusb_init_gfxcore(sisusb) == 0) {
2254 sisusb->gfxinit = 1;
2255 sisusb_get_ramconfig(sisusb);
2256 ret |= sisusb_set_default_mode(sisusb, 1);
2257 ret |= sisusb_setup_screen(sisusb, 1, initscreen);
2258 }
2259 }
2260
2261 return ret;
2262}
2263
2264
2265#ifdef INCL_SISUSB_CON
2266
2267/* Set up default text mode:
2268 * - Set text mode (0x03)
2269 * - Upload default font
2270 * - Upload user font (if available)
2271 */
2272
2273int sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init)
2274{
2275 int ret = 0, slot = sisusb->font_slot, i;
2276 const struct font_desc *myfont;
2277 u8 *tempbuf;
2278 u16 *tempbufb;
2279 size_t written;
2280 static const char bootstring[] =
2281 "SiSUSB VGA text console, (C) 2005 Thomas Winischhofer.";
2282 static const char bootlogo[] = "(o_ //\\ V_/_";
2283
2284 /* sisusb->lock is down */
2285
2286 if (!sisusb->SiS_Pr)
2287 return 1;
2288
2289 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2290 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2291
2292 /* Set mode 0x03 */
2293 SiSUSBSetMode(sisusb->SiS_Pr, 0x03);
2294
2295 myfont = find_font("VGA8x16");
2296 if (!myfont)
2297 return 1;
2298
2299 tempbuf = vmalloc(8192);
2300 if (!tempbuf)
2301 return 1;
2302
2303 for (i = 0; i < 256; i++)
2304 memcpy(tempbuf + (i * 32), myfont->data + (i * 16), 16);
2305
2306 /* Upload default font */
2307 ret = sisusbcon_do_font_op(sisusb, 1, 0, tempbuf, 8192,
2308 0, 1, NULL, 16, 0);
2309
2310 vfree(tempbuf);
2311
2312 /* Upload user font (and reset current slot) */
2313 if (sisusb->font_backup) {
2314 ret |= sisusbcon_do_font_op(sisusb, 1, 2, sisusb->font_backup,
2315 8192, sisusb->font_backup_512, 1, NULL,
2316 sisusb->font_backup_height, 0);
2317 if (slot != 2)
2318 sisusbcon_do_font_op(sisusb, 1, 0, NULL, 0, 0, 1,
2319 NULL, 16, 0);
2320 }
2321
2322 if (init && !sisusb->scrbuf) {
2323
2324 tempbuf = vmalloc(8192);
2325 if (tempbuf) {
2326
2327 i = 4096;
2328 tempbufb = (u16 *)tempbuf;
2329 while (i--)
2330 *(tempbufb++) = 0x0720;
2331
2332 i = 0;
2333 tempbufb = (u16 *)tempbuf;
2334 while (bootlogo[i]) {
2335 *(tempbufb++) = 0x0700 | bootlogo[i++];
2336 if (!(i % 4))
2337 tempbufb += 76;
2338 }
2339
2340 i = 0;
2341 tempbufb = (u16 *)tempbuf + 6;
2342 while (bootstring[i])
2343 *(tempbufb++) = 0x0700 | bootstring[i++];
2344
2345 ret |= sisusb_copy_memory(sisusb, tempbuf,
2346 sisusb->vrambase, 8192, &written);
2347
2348 vfree(tempbuf);
2349
2350 }
2351
2352 } else if (sisusb->scrbuf) {
2353
2354 ret |= sisusb_copy_memory(sisusb, (char *)sisusb->scrbuf,
2355 sisusb->vrambase, sisusb->scrbuf_size,
2356 &written);
2357
2358 }
2359
2360 if (sisusb->sisusb_cursor_size_from >= 0 &&
2361 sisusb->sisusb_cursor_size_to >= 0) {
2362 sisusb_setidxreg(sisusb, SISCR, 0x0a,
2363 sisusb->sisusb_cursor_size_from);
2364 sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0,
2365 sisusb->sisusb_cursor_size_to);
2366 } else {
2367 sisusb_setidxreg(sisusb, SISCR, 0x0a, 0x2d);
2368 sisusb_setidxreg(sisusb, SISCR, 0x0b, 0x0e);
2369 sisusb->sisusb_cursor_size_to = -1;
2370 }
2371
2372 slot = sisusb->sisusb_cursor_loc;
2373 if (slot < 0)
2374 slot = 0;
2375
2376 sisusb->sisusb_cursor_loc = -1;
2377 sisusb->bad_cursor_pos = 1;
2378
2379 sisusb_set_cursor(sisusb, slot);
2380
2381 sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8));
2382 sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff));
2383
2384 sisusb->textmodedestroyed = 0;
2385
2386 /* sisusb->lock is down */
2387
2388 return ret;
2389}
2390
2391#endif
2392
2393/* fops */
2394
2395static int sisusb_open(struct inode *inode, struct file *file)
2396{
2397 struct sisusb_usb_data *sisusb;
2398 struct usb_interface *interface;
2399 int subminor = iminor(inode);
2400
2401 interface = usb_find_interface(&sisusb_driver, subminor);
2402 if (!interface)
2403 return -ENODEV;
2404
2405 sisusb = usb_get_intfdata(interface);
2406 if (!sisusb)
2407 return -ENODEV;
2408
2409 mutex_lock(&sisusb->lock);
2410
2411 if (!sisusb->present || !sisusb->ready) {
2412 mutex_unlock(&sisusb->lock);
2413 return -ENODEV;
2414 }
2415
2416 if (sisusb->isopen) {
2417 mutex_unlock(&sisusb->lock);
2418 return -EBUSY;
2419 }
2420
2421 if (!sisusb->devinit) {
2422 if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH ||
2423 sisusb->sisusb_dev->speed == USB_SPEED_SUPER) {
2424 if (sisusb_init_gfxdevice(sisusb, 0)) {
2425 mutex_unlock(&sisusb->lock);
2426 dev_err(&sisusb->sisusb_dev->dev,
2427 "Failed to initialize device\n");
2428 return -EIO;
2429 }
2430 } else {
2431 mutex_unlock(&sisusb->lock);
2432 dev_err(&sisusb->sisusb_dev->dev,
2433 "Device not attached to USB 2.0 hub\n");
2434 return -EIO;
2435 }
2436 }
2437
2438 /* Increment usage count for our sisusb */
2439 kref_get(&sisusb->kref);
2440
2441 sisusb->isopen = 1;
2442
2443 file->private_data = sisusb;
2444
2445 mutex_unlock(&sisusb->lock);
2446
2447 return 0;
2448}
2449
2450void sisusb_delete(struct kref *kref)
2451{
2452 struct sisusb_usb_data *sisusb = to_sisusb_dev(kref);
2453
2454 if (!sisusb)
2455 return;
2456
2457 usb_put_dev(sisusb->sisusb_dev);
2458
2459 sisusb->sisusb_dev = NULL;
2460 sisusb_free_buffers(sisusb);
2461 sisusb_free_urbs(sisusb);
2462#ifdef INCL_SISUSB_CON
2463 kfree(sisusb->SiS_Pr);
2464#endif
2465 kfree(sisusb);
2466}
2467
2468static int sisusb_release(struct inode *inode, struct file *file)
2469{
2470 struct sisusb_usb_data *sisusb;
2471
2472 sisusb = file->private_data;
2473 if (!sisusb)
2474 return -ENODEV;
2475
2476 mutex_lock(&sisusb->lock);
2477
2478 if (sisusb->present) {
2479 /* Wait for all URBs to finish if device still present */
2480 if (!sisusb_wait_all_out_complete(sisusb))
2481 sisusb_kill_all_busy(sisusb);
2482 }
2483
2484 sisusb->isopen = 0;
2485 file->private_data = NULL;
2486
2487 mutex_unlock(&sisusb->lock);
2488
2489 /* decrement the usage count on our device */
2490 kref_put(&sisusb->kref, sisusb_delete);
2491
2492 return 0;
2493}
2494
2495static ssize_t sisusb_read(struct file *file, char __user *buffer,
2496 size_t count, loff_t *ppos)
2497{
2498 struct sisusb_usb_data *sisusb;
2499 ssize_t bytes_read = 0;
2500 int errno = 0;
2501 u8 buf8;
2502 u16 buf16;
2503 u32 buf32, address;
2504
2505 sisusb = file->private_data;
2506 if (!sisusb)
2507 return -ENODEV;
2508
2509 mutex_lock(&sisusb->lock);
2510
2511 /* Sanity check */
2512 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2513 mutex_unlock(&sisusb->lock);
2514 return -ENODEV;
2515 }
2516
2517 if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
2518 (*ppos) < SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
2519
2520 address = (*ppos) - SISUSB_PCI_PSEUDO_IOPORTBASE +
2521 SISUSB_PCI_IOPORTBASE;
2522
2523 /* Read i/o ports
2524 * Byte, word and long(32) can be read. As this
2525 * emulates inX instructions, the data returned is
2526 * in machine-endianness.
2527 */
2528 switch (count) {
2529 case 1:
2530 if (sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO,
2531 address, &buf8))
2532 errno = -EIO;
2533 else if (put_user(buf8, (u8 __user *)buffer))
2534 errno = -EFAULT;
2535 else
2536 bytes_read = 1;
2537
2538 break;
2539
2540 case 2:
2541 if (sisusb_read_memio_word(sisusb, SISUSB_TYPE_IO,
2542 address, &buf16))
2543 errno = -EIO;
2544 else if (put_user(buf16, (u16 __user *)buffer))
2545 errno = -EFAULT;
2546 else
2547 bytes_read = 2;
2548
2549 break;
2550
2551 case 4:
2552 if (sisusb_read_memio_long(sisusb, SISUSB_TYPE_IO,
2553 address, &buf32))
2554 errno = -EIO;
2555 else if (put_user(buf32, (u32 __user *)buffer))
2556 errno = -EFAULT;
2557 else
2558 bytes_read = 4;
2559
2560 break;
2561
2562 default:
2563 errno = -EIO;
2564
2565 }
2566
2567 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE && (*ppos) <
2568 SISUSB_PCI_PSEUDO_MEMBASE + sisusb->vramsize) {
2569
2570 address = (*ppos) - SISUSB_PCI_PSEUDO_MEMBASE +
2571 SISUSB_PCI_MEMBASE;
2572
2573 /* Read video ram
2574 * Remember: Data delivered is never endian-corrected
2575 */
2576 errno = sisusb_read_mem_bulk(sisusb, address,
2577 NULL, count, buffer, &bytes_read);
2578
2579 if (bytes_read)
2580 errno = bytes_read;
2581
2582 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
2583 (*ppos) < SISUSB_PCI_PSEUDO_MMIOBASE +
2584 SISUSB_PCI_MMIOSIZE) {
2585
2586 address = (*ppos) - SISUSB_PCI_PSEUDO_MMIOBASE +
2587 SISUSB_PCI_MMIOBASE;
2588
2589 /* Read MMIO
2590 * Remember: Data delivered is never endian-corrected
2591 */
2592 errno = sisusb_read_mem_bulk(sisusb, address,
2593 NULL, count, buffer, &bytes_read);
2594
2595 if (bytes_read)
2596 errno = bytes_read;
2597
2598 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
2599 (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + 0x5c) {
2600
2601 if (count != 4) {
2602 mutex_unlock(&sisusb->lock);
2603 return -EINVAL;
2604 }
2605
2606 address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
2607
2608 /* Read PCI config register
2609 * Return value delivered in machine endianness.
2610 */
2611 if (sisusb_read_pci_config(sisusb, address, &buf32))
2612 errno = -EIO;
2613 else if (put_user(buf32, (u32 __user *)buffer))
2614 errno = -EFAULT;
2615 else
2616 bytes_read = 4;
2617
2618 } else {
2619
2620 errno = -EBADFD;
2621
2622 }
2623
2624 (*ppos) += bytes_read;
2625
2626 mutex_unlock(&sisusb->lock);
2627
2628 return errno ? errno : bytes_read;
2629}
2630
2631static ssize_t sisusb_write(struct file *file, const char __user *buffer,
2632 size_t count, loff_t *ppos)
2633{
2634 struct sisusb_usb_data *sisusb;
2635 int errno = 0;
2636 ssize_t bytes_written = 0;
2637 u8 buf8;
2638 u16 buf16;
2639 u32 buf32, address;
2640
2641 sisusb = file->private_data;
2642 if (!sisusb)
2643 return -ENODEV;
2644
2645 mutex_lock(&sisusb->lock);
2646
2647 /* Sanity check */
2648 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2649 mutex_unlock(&sisusb->lock);
2650 return -ENODEV;
2651 }
2652
2653 if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
2654 (*ppos) < SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
2655
2656 address = (*ppos) - SISUSB_PCI_PSEUDO_IOPORTBASE +
2657 SISUSB_PCI_IOPORTBASE;
2658
2659 /* Write i/o ports
2660 * Byte, word and long(32) can be written. As this
2661 * emulates outX instructions, the data is expected
2662 * in machine-endianness.
2663 */
2664 switch (count) {
2665 case 1:
2666 if (get_user(buf8, (u8 __user *)buffer))
2667 errno = -EFAULT;
2668 else if (sisusb_write_memio_byte(sisusb,
2669 SISUSB_TYPE_IO, address, buf8))
2670 errno = -EIO;
2671 else
2672 bytes_written = 1;
2673
2674 break;
2675
2676 case 2:
2677 if (get_user(buf16, (u16 __user *)buffer))
2678 errno = -EFAULT;
2679 else if (sisusb_write_memio_word(sisusb,
2680 SISUSB_TYPE_IO, address, buf16))
2681 errno = -EIO;
2682 else
2683 bytes_written = 2;
2684
2685 break;
2686
2687 case 4:
2688 if (get_user(buf32, (u32 __user *)buffer))
2689 errno = -EFAULT;
2690 else if (sisusb_write_memio_long(sisusb,
2691 SISUSB_TYPE_IO, address, buf32))
2692 errno = -EIO;
2693 else
2694 bytes_written = 4;
2695
2696 break;
2697
2698 default:
2699 errno = -EIO;
2700 }
2701
2702 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE &&
2703 (*ppos) < SISUSB_PCI_PSEUDO_MEMBASE +
2704 sisusb->vramsize) {
2705
2706 address = (*ppos) - SISUSB_PCI_PSEUDO_MEMBASE +
2707 SISUSB_PCI_MEMBASE;
2708
2709 /* Write video ram.
2710 * Buffer is copied 1:1, therefore, on big-endian
2711 * machines, the data must be swapped by userland
2712 * in advance (if applicable; no swapping in 8bpp
2713 * mode or if YUV data is being transferred).
2714 */
2715 errno = sisusb_write_mem_bulk(sisusb, address, NULL,
2716 count, buffer, 0, &bytes_written);
2717
2718 if (bytes_written)
2719 errno = bytes_written;
2720
2721 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
2722 (*ppos) < SISUSB_PCI_PSEUDO_MMIOBASE +
2723 SISUSB_PCI_MMIOSIZE) {
2724
2725 address = (*ppos) - SISUSB_PCI_PSEUDO_MMIOBASE +
2726 SISUSB_PCI_MMIOBASE;
2727
2728 /* Write MMIO.
2729 * Buffer is copied 1:1, therefore, on big-endian
2730 * machines, the data must be swapped by userland
2731 * in advance.
2732 */
2733 errno = sisusb_write_mem_bulk(sisusb, address, NULL,
2734 count, buffer, 0, &bytes_written);
2735
2736 if (bytes_written)
2737 errno = bytes_written;
2738
2739 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
2740 (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE +
2741 SISUSB_PCI_PCONFSIZE) {
2742
2743 if (count != 4) {
2744 mutex_unlock(&sisusb->lock);
2745 return -EINVAL;
2746 }
2747
2748 address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
2749
2750 /* Write PCI config register.
2751 * Given value expected in machine endianness.
2752 */
2753 if (get_user(buf32, (u32 __user *)buffer))
2754 errno = -EFAULT;
2755 else if (sisusb_write_pci_config(sisusb, address, buf32))
2756 errno = -EIO;
2757 else
2758 bytes_written = 4;
2759
2760
2761 } else {
2762
2763 /* Error */
2764 errno = -EBADFD;
2765
2766 }
2767
2768 (*ppos) += bytes_written;
2769
2770 mutex_unlock(&sisusb->lock);
2771
2772 return errno ? errno : bytes_written;
2773}
2774
2775static loff_t sisusb_lseek(struct file *file, loff_t offset, int orig)
2776{
2777 struct sisusb_usb_data *sisusb;
2778 loff_t ret;
2779
2780 sisusb = file->private_data;
2781 if (!sisusb)
2782 return -ENODEV;
2783
2784 mutex_lock(&sisusb->lock);
2785
2786 /* Sanity check */
2787 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2788 mutex_unlock(&sisusb->lock);
2789 return -ENODEV;
2790 }
2791
2792 ret = no_seek_end_llseek(file, offset, orig);
2793
2794 mutex_unlock(&sisusb->lock);
2795 return ret;
2796}
2797
2798static int sisusb_handle_command(struct sisusb_usb_data *sisusb,
2799 struct sisusb_command *y, unsigned long arg)
2800{
2801 int retval, port, length;
2802 u32 address;
2803
2804 /* All our commands require the device
2805 * to be initialized.
2806 */
2807 if (!sisusb->devinit)
2808 return -ENODEV;
2809
2810 port = y->data3 -
2811 SISUSB_PCI_PSEUDO_IOPORTBASE +
2812 SISUSB_PCI_IOPORTBASE;
2813
2814 switch (y->operation) {
2815 case SUCMD_GET:
2816 retval = sisusb_getidxreg(sisusb, port, y->data0, &y->data1);
2817 if (!retval) {
2818 if (copy_to_user((void __user *)arg, y, sizeof(*y)))
2819 retval = -EFAULT;
2820 }
2821 break;
2822
2823 case SUCMD_SET:
2824 retval = sisusb_setidxreg(sisusb, port, y->data0, y->data1);
2825 break;
2826
2827 case SUCMD_SETOR:
2828 retval = sisusb_setidxregor(sisusb, port, y->data0, y->data1);
2829 break;
2830
2831 case SUCMD_SETAND:
2832 retval = sisusb_setidxregand(sisusb, port, y->data0, y->data1);
2833 break;
2834
2835 case SUCMD_SETANDOR:
2836 retval = sisusb_setidxregandor(sisusb, port, y->data0,
2837 y->data1, y->data2);
2838 break;
2839
2840 case SUCMD_SETMASK:
2841 retval = sisusb_setidxregmask(sisusb, port, y->data0,
2842 y->data1, y->data2);
2843 break;
2844
2845 case SUCMD_CLRSCR:
2846 /* Gfx core must be initialized */
2847 if (!sisusb->gfxinit)
2848 return -ENODEV;
2849
2850 length = (y->data0 << 16) | (y->data1 << 8) | y->data2;
2851 address = y->data3 - SISUSB_PCI_PSEUDO_MEMBASE +
2852 SISUSB_PCI_MEMBASE;
2853 retval = sisusb_clear_vram(sisusb, address, length);
2854 break;
2855
2856 case SUCMD_HANDLETEXTMODE:
2857 retval = 0;
2858#ifdef INCL_SISUSB_CON
2859 /* Gfx core must be initialized, SiS_Pr must exist */
2860 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2861 return -ENODEV;
2862
2863 switch (y->data0) {
2864 case 0:
2865 retval = sisusb_reset_text_mode(sisusb, 0);
2866 break;
2867 case 1:
2868 sisusb->textmodedestroyed = 1;
2869 break;
2870 }
2871#endif
2872 break;
2873
2874#ifdef INCL_SISUSB_CON
2875 case SUCMD_SETMODE:
2876 /* Gfx core must be initialized, SiS_Pr must exist */
2877 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2878 return -ENODEV;
2879
2880 retval = 0;
2881
2882 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2883 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2884
2885 if (SiSUSBSetMode(sisusb->SiS_Pr, y->data3))
2886 retval = -EINVAL;
2887
2888 break;
2889
2890 case SUCMD_SETVESAMODE:
2891 /* Gfx core must be initialized, SiS_Pr must exist */
2892 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2893 return -ENODEV;
2894
2895 retval = 0;
2896
2897 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2898 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2899
2900 if (SiSUSBSetVESAMode(sisusb->SiS_Pr, y->data3))
2901 retval = -EINVAL;
2902
2903 break;
2904#endif
2905
2906 default:
2907 retval = -EINVAL;
2908 }
2909
2910 if (retval > 0)
2911 retval = -EIO;
2912
2913 return retval;
2914}
2915
2916static long sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2917{
2918 struct sisusb_usb_data *sisusb;
2919 struct sisusb_info x;
2920 struct sisusb_command y;
2921 long retval = 0;
2922 u32 __user *argp = (u32 __user *)arg;
2923
2924 sisusb = file->private_data;
2925 if (!sisusb)
2926 return -ENODEV;
2927
2928 mutex_lock(&sisusb->lock);
2929
2930 /* Sanity check */
2931 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2932 retval = -ENODEV;
2933 goto err_out;
2934 }
2935
2936 switch (cmd) {
2937 case SISUSB_GET_CONFIG_SIZE:
2938
2939 if (put_user(sizeof(x), argp))
2940 retval = -EFAULT;
2941
2942 break;
2943
2944 case SISUSB_GET_CONFIG:
2945
2946 x.sisusb_id = SISUSB_ID;
2947 x.sisusb_version = SISUSB_VERSION;
2948 x.sisusb_revision = SISUSB_REVISION;
2949 x.sisusb_patchlevel = SISUSB_PATCHLEVEL;
2950 x.sisusb_gfxinit = sisusb->gfxinit;
2951 x.sisusb_vrambase = SISUSB_PCI_PSEUDO_MEMBASE;
2952 x.sisusb_mmiobase = SISUSB_PCI_PSEUDO_MMIOBASE;
2953 x.sisusb_iobase = SISUSB_PCI_PSEUDO_IOPORTBASE;
2954 x.sisusb_pcibase = SISUSB_PCI_PSEUDO_PCIBASE;
2955 x.sisusb_vramsize = sisusb->vramsize;
2956 x.sisusb_minor = sisusb->minor;
2957 x.sisusb_fbdevactive = 0;
2958#ifdef INCL_SISUSB_CON
2959 x.sisusb_conactive = sisusb->haveconsole ? 1 : 0;
2960#else
2961 x.sisusb_conactive = 0;
2962#endif
2963 memset(x.sisusb_reserved, 0, sizeof(x.sisusb_reserved));
2964
2965 if (copy_to_user((void __user *)arg, &x, sizeof(x)))
2966 retval = -EFAULT;
2967
2968 break;
2969
2970 case SISUSB_COMMAND:
2971
2972 if (copy_from_user(&y, (void __user *)arg, sizeof(y)))
2973 retval = -EFAULT;
2974 else
2975 retval = sisusb_handle_command(sisusb, &y, arg);
2976
2977 break;
2978
2979 default:
2980 retval = -ENOTTY;
2981 break;
2982 }
2983
2984err_out:
2985 mutex_unlock(&sisusb->lock);
2986 return retval;
2987}
2988
2989#ifdef SISUSB_NEW_CONFIG_COMPAT
2990static long sisusb_compat_ioctl(struct file *f, unsigned int cmd,
2991 unsigned long arg)
2992{
2993 long retval;
2994
2995 switch (cmd) {
2996 case SISUSB_GET_CONFIG_SIZE:
2997 case SISUSB_GET_CONFIG:
2998 case SISUSB_COMMAND:
2999 retval = sisusb_ioctl(f, cmd, arg);
3000 return retval;
3001
3002 default:
3003 return -ENOIOCTLCMD;
3004 }
3005}
3006#endif
3007
3008static const struct file_operations usb_sisusb_fops = {
3009 .owner = THIS_MODULE,
3010 .open = sisusb_open,
3011 .release = sisusb_release,
3012 .read = sisusb_read,
3013 .write = sisusb_write,
3014 .llseek = sisusb_lseek,
3015#ifdef SISUSB_NEW_CONFIG_COMPAT
3016 .compat_ioctl = sisusb_compat_ioctl,
3017#endif
3018 .unlocked_ioctl = sisusb_ioctl
3019};
3020
3021static struct usb_class_driver usb_sisusb_class = {
3022 .name = "sisusbvga%d",
3023 .fops = &usb_sisusb_fops,
3024 .minor_base = SISUSB_MINOR
3025};
3026
3027static int sisusb_probe(struct usb_interface *intf,
3028 const struct usb_device_id *id)
3029{
3030 struct usb_device *dev = interface_to_usbdev(intf);
3031 struct sisusb_usb_data *sisusb;
3032 int retval = 0, i;
3033
3034 dev_info(&dev->dev, "USB2VGA dongle found at address %d\n",
3035 dev->devnum);
3036
3037 /* Allocate memory for our private */
3038 sisusb = kzalloc(sizeof(*sisusb), GFP_KERNEL);
3039 if (!sisusb)
3040 return -ENOMEM;
3041
3042 kref_init(&sisusb->kref);
3043
3044 mutex_init(&(sisusb->lock));
3045
3046 /* Register device */
3047 retval = usb_register_dev(intf, &usb_sisusb_class);
3048 if (retval) {
3049 dev_err(&sisusb->sisusb_dev->dev,
3050 "Failed to get a minor for device %d\n",
3051 dev->devnum);
3052 retval = -ENODEV;
3053 goto error_1;
3054 }
3055
3056 sisusb->sisusb_dev = dev;
3057 sisusb->minor = intf->minor;
3058 sisusb->vrambase = SISUSB_PCI_MEMBASE;
3059 sisusb->mmiobase = SISUSB_PCI_MMIOBASE;
3060 sisusb->mmiosize = SISUSB_PCI_MMIOSIZE;
3061 sisusb->ioportbase = SISUSB_PCI_IOPORTBASE;
3062 /* Everything else is zero */
3063
3064 /* Allocate buffers */
3065 sisusb->ibufsize = SISUSB_IBUF_SIZE;
3066 sisusb->ibuf = kmalloc(SISUSB_IBUF_SIZE, GFP_KERNEL);
3067 if (!sisusb->ibuf) {
3068 retval = -ENOMEM;
3069 goto error_2;
3070 }
3071
3072 sisusb->numobufs = 0;
3073 sisusb->obufsize = SISUSB_OBUF_SIZE;
3074 for (i = 0; i < NUMOBUFS; i++) {
3075 sisusb->obuf[i] = kmalloc(SISUSB_OBUF_SIZE, GFP_KERNEL);
3076 if (!sisusb->obuf[i]) {
3077 if (i == 0) {
3078 retval = -ENOMEM;
3079 goto error_3;
3080 }
3081 break;
3082 }
3083 sisusb->numobufs++;
3084 }
3085
3086 /* Allocate URBs */
3087 sisusb->sisurbin = usb_alloc_urb(0, GFP_KERNEL);
3088 if (!sisusb->sisurbin) {
3089 dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate URBs\n");
3090 retval = -ENOMEM;
3091 goto error_3;
3092 }
3093 sisusb->completein = 1;
3094
3095 for (i = 0; i < sisusb->numobufs; i++) {
3096 sisusb->sisurbout[i] = usb_alloc_urb(0, GFP_KERNEL);
3097 if (!sisusb->sisurbout[i]) {
3098 dev_err(&sisusb->sisusb_dev->dev,
3099 "Failed to allocate URBs\n");
3100 retval = -ENOMEM;
3101 goto error_4;
3102 }
3103 sisusb->urbout_context[i].sisusb = (void *)sisusb;
3104 sisusb->urbout_context[i].urbindex = i;
3105 sisusb->urbstatus[i] = 0;
3106 }
3107
3108 dev_info(&sisusb->sisusb_dev->dev, "Allocated %d output buffers\n",
3109 sisusb->numobufs);
3110
3111#ifdef INCL_SISUSB_CON
3112 /* Allocate our SiS_Pr */
3113 sisusb->SiS_Pr = kmalloc(sizeof(struct SiS_Private), GFP_KERNEL);
3114 if (!sisusb->SiS_Pr) {
3115 retval = -ENOMEM;
3116 goto error_4;
3117 }
3118#endif
3119
3120 /* Do remaining init stuff */
3121
3122 init_waitqueue_head(&sisusb->wait_q);
3123
3124 usb_set_intfdata(intf, sisusb);
3125
3126 usb_get_dev(sisusb->sisusb_dev);
3127
3128 sisusb->present = 1;
3129
3130 if (dev->speed == USB_SPEED_HIGH || dev->speed == USB_SPEED_SUPER) {
3131 int initscreen = 1;
3132#ifdef INCL_SISUSB_CON
3133 if (sisusb_first_vc > 0 && sisusb_last_vc > 0 &&
3134 sisusb_first_vc <= sisusb_last_vc &&
3135 sisusb_last_vc <= MAX_NR_CONSOLES)
3136 initscreen = 0;
3137#endif
3138 if (sisusb_init_gfxdevice(sisusb, initscreen))
3139 dev_err(&sisusb->sisusb_dev->dev,
3140 "Failed to early initialize device\n");
3141
3142 } else
3143 dev_info(&sisusb->sisusb_dev->dev,
3144 "Not attached to USB 2.0 hub, deferring init\n");
3145
3146 sisusb->ready = 1;
3147
3148#ifdef SISUSBENDIANTEST
3149 dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST ***\n");
3150 sisusb_testreadwrite(sisusb);
3151 dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST END ***\n");
3152#endif
3153
3154#ifdef INCL_SISUSB_CON
3155 sisusb_console_init(sisusb, sisusb_first_vc, sisusb_last_vc);
3156#endif
3157
3158 return 0;
3159
3160error_4:
3161 sisusb_free_urbs(sisusb);
3162error_3:
3163 sisusb_free_buffers(sisusb);
3164error_2:
3165 usb_deregister_dev(intf, &usb_sisusb_class);
3166error_1:
3167 kfree(sisusb);
3168 return retval;
3169}
3170
3171static void sisusb_disconnect(struct usb_interface *intf)
3172{
3173 struct sisusb_usb_data *sisusb;
3174
3175 /* This should *not* happen */
3176 sisusb = usb_get_intfdata(intf);
3177 if (!sisusb)
3178 return;
3179
3180#ifdef INCL_SISUSB_CON
3181 sisusb_console_exit(sisusb);
3182#endif
3183
3184 usb_deregister_dev(intf, &usb_sisusb_class);
3185
3186 mutex_lock(&sisusb->lock);
3187
3188 /* Wait for all URBs to complete and kill them in case (MUST do) */
3189 if (!sisusb_wait_all_out_complete(sisusb))
3190 sisusb_kill_all_busy(sisusb);
3191
3192 usb_set_intfdata(intf, NULL);
3193
3194 sisusb->present = 0;
3195 sisusb->ready = 0;
3196
3197 mutex_unlock(&sisusb->lock);
3198
3199 /* decrement our usage count */
3200 kref_put(&sisusb->kref, sisusb_delete);
3201}
3202
3203static const struct usb_device_id sisusb_table[] = {
3204 { USB_DEVICE(0x0711, 0x0550) },
3205 { USB_DEVICE(0x0711, 0x0900) },
3206 { USB_DEVICE(0x0711, 0x0901) },
3207 { USB_DEVICE(0x0711, 0x0902) },
3208 { USB_DEVICE(0x0711, 0x0903) },
3209 { USB_DEVICE(0x0711, 0x0918) },
3210 { USB_DEVICE(0x0711, 0x0920) },
3211 { USB_DEVICE(0x0711, 0x0950) },
3212 { USB_DEVICE(0x0711, 0x5200) },
3213 { USB_DEVICE(0x182d, 0x021c) },
3214 { USB_DEVICE(0x182d, 0x0269) },
3215 { }
3216};
3217
3218MODULE_DEVICE_TABLE(usb, sisusb_table);
3219
3220static struct usb_driver sisusb_driver = {
3221 .name = "sisusb",
3222 .probe = sisusb_probe,
3223 .disconnect = sisusb_disconnect,
3224 .id_table = sisusb_table,
3225};
3226
3227static int __init usb_sisusb_init(void)
3228{
3229
3230#ifdef INCL_SISUSB_CON
3231 sisusb_init_concode();
3232#endif
3233
3234 return usb_register(&sisusb_driver);
3235}
3236
3237static void __exit usb_sisusb_exit(void)
3238{
3239 usb_deregister(&sisusb_driver);
3240}
3241
3242module_init(usb_sisusb_init);
3243module_exit(usb_sisusb_exit);
3244
3245MODULE_AUTHOR("Thomas Winischhofer <thomas@winischhofer.net>");
3246MODULE_DESCRIPTION("sisusbvga - Driver for Net2280/SiS315-based USB2VGA dongles");
3247MODULE_LICENSE("GPL");
3248
1// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
2/*
3 * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles
4 *
5 * Main part
6 *
7 * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
8 *
9 * If distributed as part of the Linux kernel, this code is licensed under the
10 * terms of the GPL v2.
11 *
12 * Otherwise, the following license terms apply:
13 *
14 * * Redistribution and use in source and binary forms, with or without
15 * * modification, are permitted provided that the following conditions
16 * * are met:
17 * * 1) Redistributions of source code must retain the above copyright
18 * * notice, this list of conditions and the following disclaimer.
19 * * 2) Redistributions in binary form must reproduce the above copyright
20 * * notice, this list of conditions and the following disclaimer in the
21 * * documentation and/or other materials provided with the distribution.
22 * * 3) The name of the author may not be used to endorse or promote products
23 * * derived from this software without specific psisusbr written permission.
24 * *
25 * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR
26 * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
27 * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
28 * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
29 * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
30 * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Author: Thomas Winischhofer <thomas@winischhofer.net>
37 *
38 */
39
40#include <linux/mutex.h>
41#include <linux/module.h>
42#include <linux/kernel.h>
43#include <linux/signal.h>
44#include <linux/errno.h>
45#include <linux/poll.h>
46#include <linux/init.h>
47#include <linux/slab.h>
48#include <linux/spinlock.h>
49#include <linux/kref.h>
50#include <linux/usb.h>
51#include <linux/vmalloc.h>
52
53#include "sisusb.h"
54#include "sisusb_init.h"
55
56#ifdef CONFIG_USB_SISUSBVGA_CON
57#include <linux/font.h>
58#endif
59
60#define SISUSB_DONTSYNC
61
62/* Forward declarations / clean-up routines */
63
64#ifdef CONFIG_USB_SISUSBVGA_CON
65static int sisusb_first_vc;
66static int sisusb_last_vc;
67module_param_named(first, sisusb_first_vc, int, 0);
68module_param_named(last, sisusb_last_vc, int, 0);
69MODULE_PARM_DESC(first, "Number of first console to take over (1 - MAX_NR_CONSOLES)");
70MODULE_PARM_DESC(last, "Number of last console to take over (1 - MAX_NR_CONSOLES)");
71#endif
72
73static struct usb_driver sisusb_driver;
74
75static void sisusb_free_buffers(struct sisusb_usb_data *sisusb)
76{
77 int i;
78
79 for (i = 0; i < NUMOBUFS; i++) {
80 kfree(sisusb->obuf[i]);
81 sisusb->obuf[i] = NULL;
82 }
83 kfree(sisusb->ibuf);
84 sisusb->ibuf = NULL;
85}
86
87static void sisusb_free_urbs(struct sisusb_usb_data *sisusb)
88{
89 int i;
90
91 for (i = 0; i < NUMOBUFS; i++) {
92 usb_free_urb(sisusb->sisurbout[i]);
93 sisusb->sisurbout[i] = NULL;
94 }
95 usb_free_urb(sisusb->sisurbin);
96 sisusb->sisurbin = NULL;
97}
98
99/* Level 0: USB transport layer */
100
101/* 1. out-bulks */
102
103/* out-urb management */
104
105/* Return 1 if all free, 0 otherwise */
106static int sisusb_all_free(struct sisusb_usb_data *sisusb)
107{
108 int i;
109
110 for (i = 0; i < sisusb->numobufs; i++) {
111
112 if (sisusb->urbstatus[i] & SU_URB_BUSY)
113 return 0;
114
115 }
116
117 return 1;
118}
119
120/* Kill all busy URBs */
121static void sisusb_kill_all_busy(struct sisusb_usb_data *sisusb)
122{
123 int i;
124
125 if (sisusb_all_free(sisusb))
126 return;
127
128 for (i = 0; i < sisusb->numobufs; i++) {
129
130 if (sisusb->urbstatus[i] & SU_URB_BUSY)
131 usb_kill_urb(sisusb->sisurbout[i]);
132
133 }
134}
135
136/* Return 1 if ok, 0 if error (not all complete within timeout) */
137static int sisusb_wait_all_out_complete(struct sisusb_usb_data *sisusb)
138{
139 int timeout = 5 * HZ, i = 1;
140
141 wait_event_timeout(sisusb->wait_q, (i = sisusb_all_free(sisusb)),
142 timeout);
143
144 return i;
145}
146
147static int sisusb_outurb_available(struct sisusb_usb_data *sisusb)
148{
149 int i;
150
151 for (i = 0; i < sisusb->numobufs; i++) {
152
153 if ((sisusb->urbstatus[i] & (SU_URB_BUSY|SU_URB_ALLOC)) == 0)
154 return i;
155
156 }
157
158 return -1;
159}
160
161static int sisusb_get_free_outbuf(struct sisusb_usb_data *sisusb)
162{
163 int i, timeout = 5 * HZ;
164
165 wait_event_timeout(sisusb->wait_q,
166 ((i = sisusb_outurb_available(sisusb)) >= 0), timeout);
167
168 return i;
169}
170
171static int sisusb_alloc_outbuf(struct sisusb_usb_data *sisusb)
172{
173 int i;
174
175 i = sisusb_outurb_available(sisusb);
176
177 if (i >= 0)
178 sisusb->urbstatus[i] |= SU_URB_ALLOC;
179
180 return i;
181}
182
183static void sisusb_free_outbuf(struct sisusb_usb_data *sisusb, int index)
184{
185 if ((index >= 0) && (index < sisusb->numobufs))
186 sisusb->urbstatus[index] &= ~SU_URB_ALLOC;
187}
188
189/* completion callback */
190
191static void sisusb_bulk_completeout(struct urb *urb)
192{
193 struct sisusb_urb_context *context = urb->context;
194 struct sisusb_usb_data *sisusb;
195
196 if (!context)
197 return;
198
199 sisusb = context->sisusb;
200
201 if (!sisusb || !sisusb->sisusb_dev || !sisusb->present)
202 return;
203
204#ifndef SISUSB_DONTSYNC
205 if (context->actual_length)
206 *(context->actual_length) += urb->actual_length;
207#endif
208
209 sisusb->urbstatus[context->urbindex] &= ~SU_URB_BUSY;
210 wake_up(&sisusb->wait_q);
211}
212
213static int sisusb_bulkout_msg(struct sisusb_usb_data *sisusb, int index,
214 unsigned int pipe, void *data, int len, int *actual_length,
215 int timeout, unsigned int tflags)
216{
217 struct urb *urb = sisusb->sisurbout[index];
218 int retval, byteswritten = 0;
219
220 /* Set up URB */
221 urb->transfer_flags = 0;
222
223 usb_fill_bulk_urb(urb, sisusb->sisusb_dev, pipe, data, len,
224 sisusb_bulk_completeout,
225 &sisusb->urbout_context[index]);
226
227 urb->transfer_flags |= tflags;
228 urb->actual_length = 0;
229
230 /* Set up context */
231 sisusb->urbout_context[index].actual_length = (timeout) ?
232 NULL : actual_length;
233
234 /* Declare this urb/buffer in use */
235 sisusb->urbstatus[index] |= SU_URB_BUSY;
236
237 /* Submit URB */
238 retval = usb_submit_urb(urb, GFP_KERNEL);
239
240 /* If OK, and if timeout > 0, wait for completion */
241 if ((retval == 0) && timeout) {
242 wait_event_timeout(sisusb->wait_q,
243 (!(sisusb->urbstatus[index] & SU_URB_BUSY)),
244 timeout);
245 if (sisusb->urbstatus[index] & SU_URB_BUSY) {
246 /* URB timed out... kill it and report error */
247 usb_kill_urb(urb);
248 retval = -ETIMEDOUT;
249 } else {
250 /* Otherwise, report urb status */
251 retval = urb->status;
252 byteswritten = urb->actual_length;
253 }
254 }
255
256 if (actual_length)
257 *actual_length = byteswritten;
258
259 return retval;
260}
261
262/* 2. in-bulks */
263
264/* completion callback */
265
266static void sisusb_bulk_completein(struct urb *urb)
267{
268 struct sisusb_usb_data *sisusb = urb->context;
269
270 if (!sisusb || !sisusb->sisusb_dev || !sisusb->present)
271 return;
272
273 sisusb->completein = 1;
274 wake_up(&sisusb->wait_q);
275}
276
277static int sisusb_bulkin_msg(struct sisusb_usb_data *sisusb,
278 unsigned int pipe, void *data, int len,
279 int *actual_length, int timeout, unsigned int tflags)
280{
281 struct urb *urb = sisusb->sisurbin;
282 int retval, readbytes = 0;
283
284 urb->transfer_flags = 0;
285
286 usb_fill_bulk_urb(urb, sisusb->sisusb_dev, pipe, data, len,
287 sisusb_bulk_completein, sisusb);
288
289 urb->transfer_flags |= tflags;
290 urb->actual_length = 0;
291
292 sisusb->completein = 0;
293 retval = usb_submit_urb(urb, GFP_KERNEL);
294 if (retval == 0) {
295 wait_event_timeout(sisusb->wait_q, sisusb->completein, timeout);
296 if (!sisusb->completein) {
297 /* URB timed out... kill it and report error */
298 usb_kill_urb(urb);
299 retval = -ETIMEDOUT;
300 } else {
301 /* URB completed within timeout */
302 retval = urb->status;
303 readbytes = urb->actual_length;
304 }
305 }
306
307 if (actual_length)
308 *actual_length = readbytes;
309
310 return retval;
311}
312
313
314/* Level 1: */
315
316/* Send a bulk message of variable size
317 *
318 * To copy the data from userspace, give pointer to "userbuffer",
319 * to copy from (non-DMA) kernel memory, give "kernbuffer". If
320 * both of these are NULL, it is assumed, that the transfer
321 * buffer "sisusb->obuf[index]" is set up with the data to send.
322 * Index is ignored if either kernbuffer or userbuffer is set.
323 * If async is nonzero, URBs will be sent without waiting for
324 * completion of the previous URB.
325 *
326 * (return 0 on success)
327 */
328
329static int sisusb_send_bulk_msg(struct sisusb_usb_data *sisusb, int ep, int len,
330 char *kernbuffer, const char __user *userbuffer, int index,
331 ssize_t *bytes_written, unsigned int tflags, int async)
332{
333 int result = 0, retry, count = len;
334 int passsize, thispass, transferred_len = 0;
335 int fromuser = (userbuffer != NULL) ? 1 : 0;
336 int fromkern = (kernbuffer != NULL) ? 1 : 0;
337 unsigned int pipe;
338 char *buffer;
339
340 (*bytes_written) = 0;
341
342 /* Sanity check */
343 if (!sisusb || !sisusb->present || !sisusb->sisusb_dev)
344 return -ENODEV;
345
346 /* If we copy data from kernel or userspace, force the
347 * allocation of a buffer/urb. If we have the data in
348 * the transfer buffer[index] already, reuse the buffer/URB
349 * if the length is > buffer size. (So, transmitting
350 * large data amounts directly from the transfer buffer
351 * treats the buffer as a ring buffer. However, we need
352 * to sync in this case.)
353 */
354 if (fromuser || fromkern)
355 index = -1;
356 else if (len > sisusb->obufsize)
357 async = 0;
358
359 pipe = usb_sndbulkpipe(sisusb->sisusb_dev, ep);
360
361 do {
362 passsize = thispass = (sisusb->obufsize < count) ?
363 sisusb->obufsize : count;
364
365 if (index < 0)
366 index = sisusb_get_free_outbuf(sisusb);
367
368 if (index < 0)
369 return -EIO;
370
371 buffer = sisusb->obuf[index];
372
373 if (fromuser) {
374
375 if (copy_from_user(buffer, userbuffer, passsize))
376 return -EFAULT;
377
378 userbuffer += passsize;
379
380 } else if (fromkern) {
381
382 memcpy(buffer, kernbuffer, passsize);
383 kernbuffer += passsize;
384
385 }
386
387 retry = 5;
388 while (thispass) {
389
390 if (!sisusb->sisusb_dev)
391 return -ENODEV;
392
393 result = sisusb_bulkout_msg(sisusb, index, pipe,
394 buffer, thispass, &transferred_len,
395 async ? 0 : 5 * HZ, tflags);
396
397 if (result == -ETIMEDOUT) {
398
399 /* Will not happen if async */
400 if (!retry--)
401 return -ETIME;
402
403 continue;
404 }
405
406 if ((result == 0) && !async && transferred_len) {
407
408 thispass -= transferred_len;
409 buffer += transferred_len;
410
411 } else
412 break;
413 }
414
415 if (result)
416 return result;
417
418 (*bytes_written) += passsize;
419 count -= passsize;
420
421 /* Force new allocation in next iteration */
422 if (fromuser || fromkern)
423 index = -1;
424
425 } while (count > 0);
426
427 if (async) {
428#ifdef SISUSB_DONTSYNC
429 (*bytes_written) = len;
430 /* Some URBs/buffers might be busy */
431#else
432 sisusb_wait_all_out_complete(sisusb);
433 (*bytes_written) = transferred_len;
434 /* All URBs and all buffers are available */
435#endif
436 }
437
438 return ((*bytes_written) == len) ? 0 : -EIO;
439}
440
441/* Receive a bulk message of variable size
442 *
443 * To copy the data to userspace, give pointer to "userbuffer",
444 * to copy to kernel memory, give "kernbuffer". One of them
445 * MUST be set. (There is no technique for letting the caller
446 * read directly from the ibuf.)
447 *
448 */
449
450static int sisusb_recv_bulk_msg(struct sisusb_usb_data *sisusb, int ep, int len,
451 void *kernbuffer, char __user *userbuffer, ssize_t *bytes_read,
452 unsigned int tflags)
453{
454 int result = 0, retry, count = len;
455 int bufsize, thispass, transferred_len;
456 unsigned int pipe;
457 char *buffer;
458
459 (*bytes_read) = 0;
460
461 /* Sanity check */
462 if (!sisusb || !sisusb->present || !sisusb->sisusb_dev)
463 return -ENODEV;
464
465 pipe = usb_rcvbulkpipe(sisusb->sisusb_dev, ep);
466 buffer = sisusb->ibuf;
467 bufsize = sisusb->ibufsize;
468
469 retry = 5;
470
471#ifdef SISUSB_DONTSYNC
472 if (!(sisusb_wait_all_out_complete(sisusb)))
473 return -EIO;
474#endif
475
476 while (count > 0) {
477
478 if (!sisusb->sisusb_dev)
479 return -ENODEV;
480
481 thispass = (bufsize < count) ? bufsize : count;
482
483 result = sisusb_bulkin_msg(sisusb, pipe, buffer, thispass,
484 &transferred_len, 5 * HZ, tflags);
485
486 if (transferred_len)
487 thispass = transferred_len;
488
489 else if (result == -ETIMEDOUT) {
490
491 if (!retry--)
492 return -ETIME;
493
494 continue;
495
496 } else
497 return -EIO;
498
499
500 if (thispass) {
501
502 (*bytes_read) += thispass;
503 count -= thispass;
504
505 if (userbuffer) {
506
507 if (copy_to_user(userbuffer, buffer, thispass))
508 return -EFAULT;
509
510 userbuffer += thispass;
511
512 } else {
513
514 memcpy(kernbuffer, buffer, thispass);
515 kernbuffer += thispass;
516
517 }
518
519 }
520
521 }
522
523 return ((*bytes_read) == len) ? 0 : -EIO;
524}
525
526static int sisusb_send_packet(struct sisusb_usb_data *sisusb, int len,
527 struct sisusb_packet *packet)
528{
529 int ret;
530 ssize_t bytes_transferred = 0;
531 __le32 tmp;
532
533 if (len == 6)
534 packet->data = 0;
535
536#ifdef SISUSB_DONTSYNC
537 if (!(sisusb_wait_all_out_complete(sisusb)))
538 return 1;
539#endif
540
541 /* Eventually correct endianness */
542 SISUSB_CORRECT_ENDIANNESS_PACKET(packet);
543
544 /* 1. send the packet */
545 ret = sisusb_send_bulk_msg(sisusb, SISUSB_EP_GFX_OUT, len,
546 (char *)packet, NULL, 0, &bytes_transferred, 0, 0);
547
548 if ((ret == 0) && (len == 6)) {
549
550 /* 2. if packet len == 6, it means we read, so wait for 32bit
551 * return value and write it to packet->data
552 */
553 ret = sisusb_recv_bulk_msg(sisusb, SISUSB_EP_GFX_IN, 4,
554 (char *)&tmp, NULL, &bytes_transferred, 0);
555
556 packet->data = le32_to_cpu(tmp);
557 }
558
559 return ret;
560}
561
562static int sisusb_send_bridge_packet(struct sisusb_usb_data *sisusb, int len,
563 struct sisusb_packet *packet, unsigned int tflags)
564{
565 int ret;
566 ssize_t bytes_transferred = 0;
567 __le32 tmp;
568
569 if (len == 6)
570 packet->data = 0;
571
572#ifdef SISUSB_DONTSYNC
573 if (!(sisusb_wait_all_out_complete(sisusb)))
574 return 1;
575#endif
576
577 /* Eventually correct endianness */
578 SISUSB_CORRECT_ENDIANNESS_PACKET(packet);
579
580 /* 1. send the packet */
581 ret = sisusb_send_bulk_msg(sisusb, SISUSB_EP_BRIDGE_OUT, len,
582 (char *)packet, NULL, 0, &bytes_transferred, tflags, 0);
583
584 if ((ret == 0) && (len == 6)) {
585
586 /* 2. if packet len == 6, it means we read, so wait for 32bit
587 * return value and write it to packet->data
588 */
589 ret = sisusb_recv_bulk_msg(sisusb, SISUSB_EP_BRIDGE_IN, 4,
590 (char *)&tmp, NULL, &bytes_transferred, 0);
591
592 packet->data = le32_to_cpu(tmp);
593 }
594
595 return ret;
596}
597
598/* access video memory and mmio (return 0 on success) */
599
600/* Low level */
601
602/* The following routines assume being used to transfer byte, word,
603 * long etc.
604 * This means that
605 * - the write routines expect "data" in machine endianness format.
606 * The data will be converted to leXX in sisusb_xxx_packet.
607 * - the read routines can expect read data in machine-endianess.
608 */
609
610static int sisusb_write_memio_byte(struct sisusb_usb_data *sisusb, int type,
611 u32 addr, u8 data)
612{
613 struct sisusb_packet packet;
614
615 packet.header = (1 << (addr & 3)) | (type << 6);
616 packet.address = addr & ~3;
617 packet.data = data << ((addr & 3) << 3);
618 return sisusb_send_packet(sisusb, 10, &packet);
619}
620
621static int sisusb_write_memio_word(struct sisusb_usb_data *sisusb, int type,
622 u32 addr, u16 data)
623{
624 struct sisusb_packet packet;
625 int ret = 0;
626
627 packet.address = addr & ~3;
628
629 switch (addr & 3) {
630 case 0:
631 packet.header = (type << 6) | 0x0003;
632 packet.data = (u32)data;
633 ret = sisusb_send_packet(sisusb, 10, &packet);
634 break;
635 case 1:
636 packet.header = (type << 6) | 0x0006;
637 packet.data = (u32)data << 8;
638 ret = sisusb_send_packet(sisusb, 10, &packet);
639 break;
640 case 2:
641 packet.header = (type << 6) | 0x000c;
642 packet.data = (u32)data << 16;
643 ret = sisusb_send_packet(sisusb, 10, &packet);
644 break;
645 case 3:
646 packet.header = (type << 6) | 0x0008;
647 packet.data = (u32)data << 24;
648 ret = sisusb_send_packet(sisusb, 10, &packet);
649 packet.header = (type << 6) | 0x0001;
650 packet.address = (addr & ~3) + 4;
651 packet.data = (u32)data >> 8;
652 ret |= sisusb_send_packet(sisusb, 10, &packet);
653 }
654
655 return ret;
656}
657
658static int sisusb_write_memio_24bit(struct sisusb_usb_data *sisusb, int type,
659 u32 addr, u32 data)
660{
661 struct sisusb_packet packet;
662 int ret = 0;
663
664 packet.address = addr & ~3;
665
666 switch (addr & 3) {
667 case 0:
668 packet.header = (type << 6) | 0x0007;
669 packet.data = data & 0x00ffffff;
670 ret = sisusb_send_packet(sisusb, 10, &packet);
671 break;
672 case 1:
673 packet.header = (type << 6) | 0x000e;
674 packet.data = data << 8;
675 ret = sisusb_send_packet(sisusb, 10, &packet);
676 break;
677 case 2:
678 packet.header = (type << 6) | 0x000c;
679 packet.data = data << 16;
680 ret = sisusb_send_packet(sisusb, 10, &packet);
681 packet.header = (type << 6) | 0x0001;
682 packet.address = (addr & ~3) + 4;
683 packet.data = (data >> 16) & 0x00ff;
684 ret |= sisusb_send_packet(sisusb, 10, &packet);
685 break;
686 case 3:
687 packet.header = (type << 6) | 0x0008;
688 packet.data = data << 24;
689 ret = sisusb_send_packet(sisusb, 10, &packet);
690 packet.header = (type << 6) | 0x0003;
691 packet.address = (addr & ~3) + 4;
692 packet.data = (data >> 8) & 0xffff;
693 ret |= sisusb_send_packet(sisusb, 10, &packet);
694 }
695
696 return ret;
697}
698
699static int sisusb_write_memio_long(struct sisusb_usb_data *sisusb, int type,
700 u32 addr, u32 data)
701{
702 struct sisusb_packet packet;
703 int ret = 0;
704
705 packet.address = addr & ~3;
706
707 switch (addr & 3) {
708 case 0:
709 packet.header = (type << 6) | 0x000f;
710 packet.data = data;
711 ret = sisusb_send_packet(sisusb, 10, &packet);
712 break;
713 case 1:
714 packet.header = (type << 6) | 0x000e;
715 packet.data = data << 8;
716 ret = sisusb_send_packet(sisusb, 10, &packet);
717 packet.header = (type << 6) | 0x0001;
718 packet.address = (addr & ~3) + 4;
719 packet.data = data >> 24;
720 ret |= sisusb_send_packet(sisusb, 10, &packet);
721 break;
722 case 2:
723 packet.header = (type << 6) | 0x000c;
724 packet.data = data << 16;
725 ret = sisusb_send_packet(sisusb, 10, &packet);
726 packet.header = (type << 6) | 0x0003;
727 packet.address = (addr & ~3) + 4;
728 packet.data = data >> 16;
729 ret |= sisusb_send_packet(sisusb, 10, &packet);
730 break;
731 case 3:
732 packet.header = (type << 6) | 0x0008;
733 packet.data = data << 24;
734 ret = sisusb_send_packet(sisusb, 10, &packet);
735 packet.header = (type << 6) | 0x0007;
736 packet.address = (addr & ~3) + 4;
737 packet.data = data >> 8;
738 ret |= sisusb_send_packet(sisusb, 10, &packet);
739 }
740
741 return ret;
742}
743
744/* The xxx_bulk routines copy a buffer of variable size. They treat the
745 * buffer as chars, therefore lsb/msb has to be corrected if using the
746 * byte/word/long/etc routines for speed-up
747 *
748 * If data is from userland, set "userbuffer" (and clear "kernbuffer"),
749 * if data is in kernel space, set "kernbuffer" (and clear "userbuffer");
750 * if neither "kernbuffer" nor "userbuffer" are given, it is assumed
751 * that the data already is in the transfer buffer "sisusb->obuf[index]".
752 */
753
754static int sisusb_write_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
755 char *kernbuffer, int length, const char __user *userbuffer,
756 int index, ssize_t *bytes_written)
757{
758 struct sisusb_packet packet;
759 int ret = 0;
760 static int msgcount;
761 u8 swap8, fromkern = kernbuffer ? 1 : 0;
762 u16 swap16;
763 u32 swap32, flag = (length >> 28) & 1;
764 u8 buf[4];
765
766 /* if neither kernbuffer not userbuffer are given, assume
767 * data in obuf
768 */
769 if (!fromkern && !userbuffer)
770 kernbuffer = sisusb->obuf[index];
771
772 (*bytes_written = 0);
773
774 length &= 0x00ffffff;
775
776 while (length) {
777 switch (length) {
778 case 1:
779 if (userbuffer) {
780 if (get_user(swap8, (u8 __user *)userbuffer))
781 return -EFAULT;
782 } else
783 swap8 = kernbuffer[0];
784
785 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM,
786 addr, swap8);
787
788 if (!ret)
789 (*bytes_written)++;
790
791 return ret;
792
793 case 2:
794 if (userbuffer) {
795 if (get_user(swap16, (u16 __user *)userbuffer))
796 return -EFAULT;
797 } else
798 swap16 = *((u16 *)kernbuffer);
799
800 ret = sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
801 addr, swap16);
802
803 if (!ret)
804 (*bytes_written) += 2;
805
806 return ret;
807
808 case 3:
809 if (userbuffer) {
810 if (copy_from_user(&buf, userbuffer, 3))
811 return -EFAULT;
812#ifdef __BIG_ENDIAN
813 swap32 = (buf[0] << 16) |
814 (buf[1] << 8) |
815 buf[2];
816#else
817 swap32 = (buf[2] << 16) |
818 (buf[1] << 8) |
819 buf[0];
820#endif
821 } else
822#ifdef __BIG_ENDIAN
823 swap32 = (kernbuffer[0] << 16) |
824 (kernbuffer[1] << 8) |
825 kernbuffer[2];
826#else
827 swap32 = (kernbuffer[2] << 16) |
828 (kernbuffer[1] << 8) |
829 kernbuffer[0];
830#endif
831
832 ret = sisusb_write_memio_24bit(sisusb, SISUSB_TYPE_MEM,
833 addr, swap32);
834
835 if (!ret)
836 (*bytes_written) += 3;
837
838 return ret;
839
840 case 4:
841 if (userbuffer) {
842 if (get_user(swap32, (u32 __user *)userbuffer))
843 return -EFAULT;
844 } else
845 swap32 = *((u32 *)kernbuffer);
846
847 ret = sisusb_write_memio_long(sisusb, SISUSB_TYPE_MEM,
848 addr, swap32);
849 if (!ret)
850 (*bytes_written) += 4;
851
852 return ret;
853
854 default:
855 if ((length & ~3) > 0x10000) {
856
857 packet.header = 0x001f;
858 packet.address = 0x000001d4;
859 packet.data = addr;
860 ret = sisusb_send_bridge_packet(sisusb, 10,
861 &packet, 0);
862 packet.header = 0x001f;
863 packet.address = 0x000001d0;
864 packet.data = (length & ~3);
865 ret |= sisusb_send_bridge_packet(sisusb, 10,
866 &packet, 0);
867 packet.header = 0x001f;
868 packet.address = 0x000001c0;
869 packet.data = flag | 0x16;
870 ret |= sisusb_send_bridge_packet(sisusb, 10,
871 &packet, 0);
872 if (userbuffer) {
873 ret |= sisusb_send_bulk_msg(sisusb,
874 SISUSB_EP_GFX_LBULK_OUT,
875 (length & ~3),
876 NULL, userbuffer, 0,
877 bytes_written, 0, 1);
878 userbuffer += (*bytes_written);
879 } else if (fromkern) {
880 ret |= sisusb_send_bulk_msg(sisusb,
881 SISUSB_EP_GFX_LBULK_OUT,
882 (length & ~3),
883 kernbuffer, NULL, 0,
884 bytes_written, 0, 1);
885 kernbuffer += (*bytes_written);
886 } else {
887 ret |= sisusb_send_bulk_msg(sisusb,
888 SISUSB_EP_GFX_LBULK_OUT,
889 (length & ~3),
890 NULL, NULL, index,
891 bytes_written, 0, 1);
892 kernbuffer += ((*bytes_written) &
893 (sisusb->obufsize-1));
894 }
895
896 } else {
897
898 packet.header = 0x001f;
899 packet.address = 0x00000194;
900 packet.data = addr;
901 ret = sisusb_send_bridge_packet(sisusb, 10,
902 &packet, 0);
903 packet.header = 0x001f;
904 packet.address = 0x00000190;
905 packet.data = (length & ~3);
906 ret |= sisusb_send_bridge_packet(sisusb, 10,
907 &packet, 0);
908 if (sisusb->flagb0 != 0x16) {
909 packet.header = 0x001f;
910 packet.address = 0x00000180;
911 packet.data = flag | 0x16;
912 ret |= sisusb_send_bridge_packet(sisusb,
913 10, &packet, 0);
914 sisusb->flagb0 = 0x16;
915 }
916 if (userbuffer) {
917 ret |= sisusb_send_bulk_msg(sisusb,
918 SISUSB_EP_GFX_BULK_OUT,
919 (length & ~3),
920 NULL, userbuffer, 0,
921 bytes_written, 0, 1);
922 userbuffer += (*bytes_written);
923 } else if (fromkern) {
924 ret |= sisusb_send_bulk_msg(sisusb,
925 SISUSB_EP_GFX_BULK_OUT,
926 (length & ~3),
927 kernbuffer, NULL, 0,
928 bytes_written, 0, 1);
929 kernbuffer += (*bytes_written);
930 } else {
931 ret |= sisusb_send_bulk_msg(sisusb,
932 SISUSB_EP_GFX_BULK_OUT,
933 (length & ~3),
934 NULL, NULL, index,
935 bytes_written, 0, 1);
936 kernbuffer += ((*bytes_written) &
937 (sisusb->obufsize-1));
938 }
939 }
940 if (ret) {
941 msgcount++;
942 if (msgcount < 500)
943 dev_err(&sisusb->sisusb_dev->dev,
944 "Wrote %zd of %d bytes, error %d\n",
945 *bytes_written, length,
946 ret);
947 else if (msgcount == 500)
948 dev_err(&sisusb->sisusb_dev->dev,
949 "Too many errors, logging stopped\n");
950 }
951 addr += (*bytes_written);
952 length -= (*bytes_written);
953 }
954
955 if (ret)
956 break;
957
958 }
959
960 return ret ? -EIO : 0;
961}
962
963/* Remember: Read data in packet is in machine-endianess! So for
964 * byte, word, 24bit, long no endian correction is necessary.
965 */
966
967static int sisusb_read_memio_byte(struct sisusb_usb_data *sisusb, int type,
968 u32 addr, u8 *data)
969{
970 struct sisusb_packet packet;
971 int ret;
972
973 CLEARPACKET(&packet);
974 packet.header = (1 << (addr & 3)) | (type << 6);
975 packet.address = addr & ~3;
976 ret = sisusb_send_packet(sisusb, 6, &packet);
977 *data = (u8)(packet.data >> ((addr & 3) << 3));
978 return ret;
979}
980
981static int sisusb_read_memio_word(struct sisusb_usb_data *sisusb, int type,
982 u32 addr, u16 *data)
983{
984 struct sisusb_packet packet;
985 int ret = 0;
986
987 CLEARPACKET(&packet);
988
989 packet.address = addr & ~3;
990
991 switch (addr & 3) {
992 case 0:
993 packet.header = (type << 6) | 0x0003;
994 ret = sisusb_send_packet(sisusb, 6, &packet);
995 *data = (u16)(packet.data);
996 break;
997 case 1:
998 packet.header = (type << 6) | 0x0006;
999 ret = sisusb_send_packet(sisusb, 6, &packet);
1000 *data = (u16)(packet.data >> 8);
1001 break;
1002 case 2:
1003 packet.header = (type << 6) | 0x000c;
1004 ret = sisusb_send_packet(sisusb, 6, &packet);
1005 *data = (u16)(packet.data >> 16);
1006 break;
1007 case 3:
1008 packet.header = (type << 6) | 0x0008;
1009 ret = sisusb_send_packet(sisusb, 6, &packet);
1010 *data = (u16)(packet.data >> 24);
1011 packet.header = (type << 6) | 0x0001;
1012 packet.address = (addr & ~3) + 4;
1013 ret |= sisusb_send_packet(sisusb, 6, &packet);
1014 *data |= (u16)(packet.data << 8);
1015 }
1016
1017 return ret;
1018}
1019
1020static int sisusb_read_memio_24bit(struct sisusb_usb_data *sisusb, int type,
1021 u32 addr, u32 *data)
1022{
1023 struct sisusb_packet packet;
1024 int ret = 0;
1025
1026 packet.address = addr & ~3;
1027
1028 switch (addr & 3) {
1029 case 0:
1030 packet.header = (type << 6) | 0x0007;
1031 ret = sisusb_send_packet(sisusb, 6, &packet);
1032 *data = packet.data & 0x00ffffff;
1033 break;
1034 case 1:
1035 packet.header = (type << 6) | 0x000e;
1036 ret = sisusb_send_packet(sisusb, 6, &packet);
1037 *data = packet.data >> 8;
1038 break;
1039 case 2:
1040 packet.header = (type << 6) | 0x000c;
1041 ret = sisusb_send_packet(sisusb, 6, &packet);
1042 *data = packet.data >> 16;
1043 packet.header = (type << 6) | 0x0001;
1044 packet.address = (addr & ~3) + 4;
1045 ret |= sisusb_send_packet(sisusb, 6, &packet);
1046 *data |= ((packet.data & 0xff) << 16);
1047 break;
1048 case 3:
1049 packet.header = (type << 6) | 0x0008;
1050 ret = sisusb_send_packet(sisusb, 6, &packet);
1051 *data = packet.data >> 24;
1052 packet.header = (type << 6) | 0x0003;
1053 packet.address = (addr & ~3) + 4;
1054 ret |= sisusb_send_packet(sisusb, 6, &packet);
1055 *data |= ((packet.data & 0xffff) << 8);
1056 }
1057
1058 return ret;
1059}
1060
1061static int sisusb_read_memio_long(struct sisusb_usb_data *sisusb, int type,
1062 u32 addr, u32 *data)
1063{
1064 struct sisusb_packet packet;
1065 int ret = 0;
1066
1067 packet.address = addr & ~3;
1068
1069 switch (addr & 3) {
1070 case 0:
1071 packet.header = (type << 6) | 0x000f;
1072 ret = sisusb_send_packet(sisusb, 6, &packet);
1073 *data = packet.data;
1074 break;
1075 case 1:
1076 packet.header = (type << 6) | 0x000e;
1077 ret = sisusb_send_packet(sisusb, 6, &packet);
1078 *data = packet.data >> 8;
1079 packet.header = (type << 6) | 0x0001;
1080 packet.address = (addr & ~3) + 4;
1081 ret |= sisusb_send_packet(sisusb, 6, &packet);
1082 *data |= (packet.data << 24);
1083 break;
1084 case 2:
1085 packet.header = (type << 6) | 0x000c;
1086 ret = sisusb_send_packet(sisusb, 6, &packet);
1087 *data = packet.data >> 16;
1088 packet.header = (type << 6) | 0x0003;
1089 packet.address = (addr & ~3) + 4;
1090 ret |= sisusb_send_packet(sisusb, 6, &packet);
1091 *data |= (packet.data << 16);
1092 break;
1093 case 3:
1094 packet.header = (type << 6) | 0x0008;
1095 ret = sisusb_send_packet(sisusb, 6, &packet);
1096 *data = packet.data >> 24;
1097 packet.header = (type << 6) | 0x0007;
1098 packet.address = (addr & ~3) + 4;
1099 ret |= sisusb_send_packet(sisusb, 6, &packet);
1100 *data |= (packet.data << 8);
1101 }
1102
1103 return ret;
1104}
1105
1106static int sisusb_read_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
1107 char *kernbuffer, int length, char __user *userbuffer,
1108 ssize_t *bytes_read)
1109{
1110 int ret = 0;
1111 char buf[4];
1112 u16 swap16;
1113 u32 swap32;
1114
1115 (*bytes_read = 0);
1116
1117 length &= 0x00ffffff;
1118
1119 while (length) {
1120 switch (length) {
1121 case 1:
1122 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM,
1123 addr, &buf[0]);
1124 if (!ret) {
1125 (*bytes_read)++;
1126 if (userbuffer) {
1127 if (put_user(buf[0], (u8 __user *)userbuffer))
1128 return -EFAULT;
1129 } else
1130 kernbuffer[0] = buf[0];
1131 }
1132 return ret;
1133
1134 case 2:
1135 ret |= sisusb_read_memio_word(sisusb, SISUSB_TYPE_MEM,
1136 addr, &swap16);
1137 if (!ret) {
1138 (*bytes_read) += 2;
1139 if (userbuffer) {
1140 if (put_user(swap16, (u16 __user *)userbuffer))
1141 return -EFAULT;
1142 } else {
1143 *((u16 *)kernbuffer) = swap16;
1144 }
1145 }
1146 return ret;
1147
1148 case 3:
1149 ret |= sisusb_read_memio_24bit(sisusb, SISUSB_TYPE_MEM,
1150 addr, &swap32);
1151 if (!ret) {
1152 (*bytes_read) += 3;
1153#ifdef __BIG_ENDIAN
1154 buf[0] = (swap32 >> 16) & 0xff;
1155 buf[1] = (swap32 >> 8) & 0xff;
1156 buf[2] = swap32 & 0xff;
1157#else
1158 buf[2] = (swap32 >> 16) & 0xff;
1159 buf[1] = (swap32 >> 8) & 0xff;
1160 buf[0] = swap32 & 0xff;
1161#endif
1162 if (userbuffer) {
1163 if (copy_to_user(userbuffer,
1164 &buf[0], 3))
1165 return -EFAULT;
1166 } else {
1167 kernbuffer[0] = buf[0];
1168 kernbuffer[1] = buf[1];
1169 kernbuffer[2] = buf[2];
1170 }
1171 }
1172 return ret;
1173
1174 default:
1175 ret |= sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM,
1176 addr, &swap32);
1177 if (!ret) {
1178 (*bytes_read) += 4;
1179 if (userbuffer) {
1180 if (put_user(swap32, (u32 __user *)userbuffer))
1181 return -EFAULT;
1182
1183 userbuffer += 4;
1184 } else {
1185 *((u32 *)kernbuffer) = swap32;
1186 kernbuffer += 4;
1187 }
1188 addr += 4;
1189 length -= 4;
1190 }
1191 }
1192 if (ret)
1193 break;
1194 }
1195
1196 return ret;
1197}
1198
1199/* High level: Gfx (indexed) register access */
1200
1201#ifdef CONFIG_USB_SISUSBVGA_CON
1202int sisusb_setreg(struct sisusb_usb_data *sisusb, u32 port, u8 data)
1203{
1204 return sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, data);
1205}
1206
1207int sisusb_getreg(struct sisusb_usb_data *sisusb, u32 port, u8 *data)
1208{
1209 return sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port, data);
1210}
1211#endif
1212
1213int sisusb_setidxreg(struct sisusb_usb_data *sisusb, u32 port,
1214 u8 index, u8 data)
1215{
1216 int ret;
1217
1218 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, index);
1219 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, data);
1220 return ret;
1221}
1222
1223int sisusb_getidxreg(struct sisusb_usb_data *sisusb, u32 port,
1224 u8 index, u8 *data)
1225{
1226 int ret;
1227
1228 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, index);
1229 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, data);
1230 return ret;
1231}
1232
1233int sisusb_setidxregandor(struct sisusb_usb_data *sisusb, u32 port, u8 idx,
1234 u8 myand, u8 myor)
1235{
1236 int ret;
1237 u8 tmp;
1238
1239 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, idx);
1240 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, &tmp);
1241 tmp &= myand;
1242 tmp |= myor;
1243 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, tmp);
1244 return ret;
1245}
1246
1247static int sisusb_setidxregmask(struct sisusb_usb_data *sisusb,
1248 u32 port, u8 idx, u8 data, u8 mask)
1249{
1250 int ret;
1251 u8 tmp;
1252
1253 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, idx);
1254 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, &tmp);
1255 tmp &= ~(mask);
1256 tmp |= (data & mask);
1257 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, tmp);
1258 return ret;
1259}
1260
1261int sisusb_setidxregor(struct sisusb_usb_data *sisusb, u32 port,
1262 u8 index, u8 myor)
1263{
1264 return sisusb_setidxregandor(sisusb, port, index, 0xff, myor);
1265}
1266
1267int sisusb_setidxregand(struct sisusb_usb_data *sisusb, u32 port,
1268 u8 idx, u8 myand)
1269{
1270 return sisusb_setidxregandor(sisusb, port, idx, myand, 0x00);
1271}
1272
1273/* Write/read video ram */
1274
1275#ifdef CONFIG_USB_SISUSBVGA_CON
1276int sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data)
1277{
1278 return sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data);
1279}
1280
1281int sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data)
1282{
1283 return sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data);
1284}
1285
1286int sisusb_copy_memory(struct sisusb_usb_data *sisusb, u8 *src,
1287 u32 dest, int length)
1288{
1289 size_t dummy;
1290
1291 return sisusb_write_mem_bulk(sisusb, dest, src, length,
1292 NULL, 0, &dummy);
1293}
1294
1295#ifdef SISUSBENDIANTEST
1296static int sisusb_read_memory(struct sisusb_usb_data *sisusb, char *dest,
1297 u32 src, int length)
1298{
1299 size_t dummy;
1300
1301 return sisusb_read_mem_bulk(sisusb, src, dest, length,
1302 NULL, &dummy);
1303}
1304#endif
1305#endif
1306
1307#ifdef SISUSBENDIANTEST
1308static void sisusb_testreadwrite(struct sisusb_usb_data *sisusb)
1309{
1310 static u8 srcbuffer[] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 };
1311 char destbuffer[10];
1312 int i, j;
1313
1314 sisusb_copy_memory(sisusb, srcbuffer, sisusb->vrambase, 7);
1315
1316 for (i = 1; i <= 7; i++) {
1317 dev_dbg(&sisusb->sisusb_dev->dev,
1318 "sisusb: rwtest %d bytes\n", i);
1319 sisusb_read_memory(sisusb, destbuffer, sisusb->vrambase, i);
1320 for (j = 0; j < i; j++) {
1321 dev_dbg(&sisusb->sisusb_dev->dev,
1322 "rwtest read[%d] = %x\n",
1323 j, destbuffer[j]);
1324 }
1325 }
1326}
1327#endif
1328
1329/* access pci config registers (reg numbers 0, 4, 8, etc) */
1330
1331static int sisusb_write_pci_config(struct sisusb_usb_data *sisusb,
1332 int regnum, u32 data)
1333{
1334 struct sisusb_packet packet;
1335
1336 packet.header = 0x008f;
1337 packet.address = regnum | 0x10000;
1338 packet.data = data;
1339 return sisusb_send_packet(sisusb, 10, &packet);
1340}
1341
1342static int sisusb_read_pci_config(struct sisusb_usb_data *sisusb,
1343 int regnum, u32 *data)
1344{
1345 struct sisusb_packet packet;
1346 int ret;
1347
1348 packet.header = 0x008f;
1349 packet.address = (u32)regnum | 0x10000;
1350 ret = sisusb_send_packet(sisusb, 6, &packet);
1351 *data = packet.data;
1352 return ret;
1353}
1354
1355/* Clear video RAM */
1356
1357static int sisusb_clear_vram(struct sisusb_usb_data *sisusb,
1358 u32 address, int length)
1359{
1360 int ret, i;
1361 ssize_t j;
1362
1363 if (address < sisusb->vrambase)
1364 return 1;
1365
1366 if (address >= sisusb->vrambase + sisusb->vramsize)
1367 return 1;
1368
1369 if (address + length > sisusb->vrambase + sisusb->vramsize)
1370 length = sisusb->vrambase + sisusb->vramsize - address;
1371
1372 if (length <= 0)
1373 return 0;
1374
1375 /* allocate free buffer/urb and clear the buffer */
1376 i = sisusb_alloc_outbuf(sisusb);
1377 if (i < 0)
1378 return -EBUSY;
1379
1380 memset(sisusb->obuf[i], 0, sisusb->obufsize);
1381
1382 /* We can write a length > buffer size here. The buffer
1383 * data will simply be re-used (like a ring-buffer).
1384 */
1385 ret = sisusb_write_mem_bulk(sisusb, address, NULL, length, NULL, i, &j);
1386
1387 /* Free the buffer/urb */
1388 sisusb_free_outbuf(sisusb, i);
1389
1390 return ret;
1391}
1392
1393/* Initialize the graphics core (return 0 on success)
1394 * This resets the graphics hardware and puts it into
1395 * a defined mode (640x480@60Hz)
1396 */
1397
1398#define GETREG(r, d) sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
1399#define SETREG(r, d) sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
1400#define SETIREG(r, i, d) sisusb_setidxreg(sisusb, r, i, d)
1401#define GETIREG(r, i, d) sisusb_getidxreg(sisusb, r, i, d)
1402#define SETIREGOR(r, i, o) sisusb_setidxregor(sisusb, r, i, o)
1403#define SETIREGAND(r, i, a) sisusb_setidxregand(sisusb, r, i, a)
1404#define SETIREGANDOR(r, i, a, o) sisusb_setidxregandor(sisusb, r, i, a, o)
1405#define READL(a, d) sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
1406#define WRITEL(a, d) sisusb_write_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
1407#define READB(a, d) sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
1408#define WRITEB(a, d) sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
1409
1410static int sisusb_triggersr16(struct sisusb_usb_data *sisusb, u8 ramtype)
1411{
1412 int ret;
1413 u8 tmp8;
1414
1415 ret = GETIREG(SISSR, 0x16, &tmp8);
1416 if (ramtype <= 1) {
1417 tmp8 &= 0x3f;
1418 ret |= SETIREG(SISSR, 0x16, tmp8);
1419 tmp8 |= 0x80;
1420 ret |= SETIREG(SISSR, 0x16, tmp8);
1421 } else {
1422 tmp8 |= 0xc0;
1423 ret |= SETIREG(SISSR, 0x16, tmp8);
1424 tmp8 &= 0x0f;
1425 ret |= SETIREG(SISSR, 0x16, tmp8);
1426 tmp8 |= 0x80;
1427 ret |= SETIREG(SISSR, 0x16, tmp8);
1428 tmp8 &= 0x0f;
1429 ret |= SETIREG(SISSR, 0x16, tmp8);
1430 tmp8 |= 0xd0;
1431 ret |= SETIREG(SISSR, 0x16, tmp8);
1432 tmp8 &= 0x0f;
1433 ret |= SETIREG(SISSR, 0x16, tmp8);
1434 tmp8 |= 0xa0;
1435 ret |= SETIREG(SISSR, 0x16, tmp8);
1436 }
1437 return ret;
1438}
1439
1440static int sisusb_getbuswidth(struct sisusb_usb_data *sisusb,
1441 int *bw, int *chab)
1442{
1443 int ret;
1444 u8 ramtype, done = 0;
1445 u32 t0, t1, t2, t3;
1446 u32 ramptr = SISUSB_PCI_MEMBASE;
1447
1448 ret = GETIREG(SISSR, 0x3a, &ramtype);
1449 ramtype &= 3;
1450
1451 ret |= SETIREG(SISSR, 0x13, 0x00);
1452
1453 if (ramtype <= 1) {
1454 ret |= SETIREG(SISSR, 0x14, 0x12);
1455 ret |= SETIREGAND(SISSR, 0x15, 0xef);
1456 } else {
1457 ret |= SETIREG(SISSR, 0x14, 0x02);
1458 }
1459
1460 ret |= sisusb_triggersr16(sisusb, ramtype);
1461 ret |= WRITEL(ramptr + 0, 0x01234567);
1462 ret |= WRITEL(ramptr + 4, 0x456789ab);
1463 ret |= WRITEL(ramptr + 8, 0x89abcdef);
1464 ret |= WRITEL(ramptr + 12, 0xcdef0123);
1465 ret |= WRITEL(ramptr + 16, 0x55555555);
1466 ret |= WRITEL(ramptr + 20, 0x55555555);
1467 ret |= WRITEL(ramptr + 24, 0xffffffff);
1468 ret |= WRITEL(ramptr + 28, 0xffffffff);
1469 ret |= READL(ramptr + 0, &t0);
1470 ret |= READL(ramptr + 4, &t1);
1471 ret |= READL(ramptr + 8, &t2);
1472 ret |= READL(ramptr + 12, &t3);
1473
1474 if (ramtype <= 1) {
1475
1476 *chab = 0; *bw = 64;
1477
1478 if ((t3 != 0xcdef0123) || (t2 != 0x89abcdef)) {
1479 if ((t1 == 0x456789ab) && (t0 == 0x01234567)) {
1480 *chab = 0; *bw = 64;
1481 ret |= SETIREGAND(SISSR, 0x14, 0xfd);
1482 }
1483 }
1484 if ((t1 != 0x456789ab) || (t0 != 0x01234567)) {
1485 *chab = 1; *bw = 64;
1486 ret |= SETIREGANDOR(SISSR, 0x14, 0xfc, 0x01);
1487
1488 ret |= sisusb_triggersr16(sisusb, ramtype);
1489 ret |= WRITEL(ramptr + 0, 0x89abcdef);
1490 ret |= WRITEL(ramptr + 4, 0xcdef0123);
1491 ret |= WRITEL(ramptr + 8, 0x55555555);
1492 ret |= WRITEL(ramptr + 12, 0x55555555);
1493 ret |= WRITEL(ramptr + 16, 0xaaaaaaaa);
1494 ret |= WRITEL(ramptr + 20, 0xaaaaaaaa);
1495 ret |= READL(ramptr + 4, &t1);
1496
1497 if (t1 != 0xcdef0123) {
1498 *bw = 32;
1499 ret |= SETIREGOR(SISSR, 0x15, 0x10);
1500 }
1501 }
1502
1503 } else {
1504
1505 *chab = 0; *bw = 64; /* default: cha, bw = 64 */
1506
1507 done = 0;
1508
1509 if (t1 == 0x456789ab) {
1510 if (t0 == 0x01234567) {
1511 *chab = 0; *bw = 64;
1512 done = 1;
1513 }
1514 } else {
1515 if (t0 == 0x01234567) {
1516 *chab = 0; *bw = 32;
1517 ret |= SETIREG(SISSR, 0x14, 0x00);
1518 done = 1;
1519 }
1520 }
1521
1522 if (!done) {
1523 ret |= SETIREG(SISSR, 0x14, 0x03);
1524 ret |= sisusb_triggersr16(sisusb, ramtype);
1525
1526 ret |= WRITEL(ramptr + 0, 0x01234567);
1527 ret |= WRITEL(ramptr + 4, 0x456789ab);
1528 ret |= WRITEL(ramptr + 8, 0x89abcdef);
1529 ret |= WRITEL(ramptr + 12, 0xcdef0123);
1530 ret |= WRITEL(ramptr + 16, 0x55555555);
1531 ret |= WRITEL(ramptr + 20, 0x55555555);
1532 ret |= WRITEL(ramptr + 24, 0xffffffff);
1533 ret |= WRITEL(ramptr + 28, 0xffffffff);
1534 ret |= READL(ramptr + 0, &t0);
1535 ret |= READL(ramptr + 4, &t1);
1536
1537 if (t1 == 0x456789ab) {
1538 if (t0 == 0x01234567) {
1539 *chab = 1; *bw = 64;
1540 return ret;
1541 } /* else error */
1542 } else {
1543 if (t0 == 0x01234567) {
1544 *chab = 1; *bw = 32;
1545 ret |= SETIREG(SISSR, 0x14, 0x01);
1546 } /* else error */
1547 }
1548 }
1549 }
1550 return ret;
1551}
1552
1553static int sisusb_verify_mclk(struct sisusb_usb_data *sisusb)
1554{
1555 int ret = 0;
1556 u32 ramptr = SISUSB_PCI_MEMBASE;
1557 u8 tmp1, tmp2, i, j;
1558
1559 ret |= WRITEB(ramptr, 0xaa);
1560 ret |= WRITEB(ramptr + 16, 0x55);
1561 ret |= READB(ramptr, &tmp1);
1562 ret |= READB(ramptr + 16, &tmp2);
1563 if ((tmp1 != 0xaa) || (tmp2 != 0x55)) {
1564 for (i = 0, j = 16; i < 2; i++, j += 16) {
1565 ret |= GETIREG(SISSR, 0x21, &tmp1);
1566 ret |= SETIREGAND(SISSR, 0x21, (tmp1 & 0xfb));
1567 ret |= SETIREGOR(SISSR, 0x3c, 0x01); /* not on 330 */
1568 ret |= SETIREGAND(SISSR, 0x3c, 0xfe); /* not on 330 */
1569 ret |= SETIREG(SISSR, 0x21, tmp1);
1570 ret |= WRITEB(ramptr + 16 + j, j);
1571 ret |= READB(ramptr + 16 + j, &tmp1);
1572 if (tmp1 == j) {
1573 ret |= WRITEB(ramptr + j, j);
1574 break;
1575 }
1576 }
1577 }
1578 return ret;
1579}
1580
1581static int sisusb_set_rank(struct sisusb_usb_data *sisusb, int *iret,
1582 int index, u8 rankno, u8 chab, const u8 dramtype[][5], int bw)
1583{
1584 int ret = 0, ranksize;
1585 u8 tmp;
1586
1587 *iret = 0;
1588
1589 if ((rankno == 2) && (dramtype[index][0] == 2))
1590 return ret;
1591
1592 ranksize = dramtype[index][3] / 2 * bw / 32;
1593
1594 if ((ranksize * rankno) > 128)
1595 return ret;
1596
1597 tmp = 0;
1598 while ((ranksize >>= 1) > 0)
1599 tmp += 0x10;
1600
1601 tmp |= ((rankno - 1) << 2);
1602 tmp |= ((bw / 64) & 0x02);
1603 tmp |= (chab & 0x01);
1604
1605 ret = SETIREG(SISSR, 0x14, tmp);
1606 ret |= sisusb_triggersr16(sisusb, 0); /* sic! */
1607
1608 *iret = 1;
1609
1610 return ret;
1611}
1612
1613static int sisusb_check_rbc(struct sisusb_usb_data *sisusb, int *iret,
1614 u32 inc, int testn)
1615{
1616 int ret = 0, i;
1617 u32 j, tmp;
1618
1619 *iret = 0;
1620
1621 for (i = 0, j = 0; i < testn; i++) {
1622 ret |= WRITEL(sisusb->vrambase + j, j);
1623 j += inc;
1624 }
1625
1626 for (i = 0, j = 0; i < testn; i++) {
1627 ret |= READL(sisusb->vrambase + j, &tmp);
1628 if (tmp != j)
1629 return ret;
1630
1631 j += inc;
1632 }
1633
1634 *iret = 1;
1635 return ret;
1636}
1637
1638static int sisusb_check_ranks(struct sisusb_usb_data *sisusb,
1639 int *iret, int rankno, int idx, int bw, const u8 rtype[][5])
1640{
1641 int ret = 0, i, i2ret;
1642 u32 inc;
1643
1644 *iret = 0;
1645
1646 for (i = rankno; i >= 1; i--) {
1647 inc = 1 << (rtype[idx][2] + rtype[idx][1] + rtype[idx][0] +
1648 bw / 64 + i);
1649 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
1650 if (!i2ret)
1651 return ret;
1652 }
1653
1654 inc = 1 << (rtype[idx][2] + bw / 64 + 2);
1655 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 4);
1656 if (!i2ret)
1657 return ret;
1658
1659 inc = 1 << (10 + bw / 64);
1660 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
1661 if (!i2ret)
1662 return ret;
1663
1664 *iret = 1;
1665 return ret;
1666}
1667
1668static int sisusb_get_sdram_size(struct sisusb_usb_data *sisusb, int *iret,
1669 int bw, int chab)
1670{
1671 int ret = 0, i2ret = 0, i, j;
1672 static const u8 sdramtype[13][5] = {
1673 { 2, 12, 9, 64, 0x35 },
1674 { 1, 13, 9, 64, 0x44 },
1675 { 2, 12, 8, 32, 0x31 },
1676 { 2, 11, 9, 32, 0x25 },
1677 { 1, 12, 9, 32, 0x34 },
1678 { 1, 13, 8, 32, 0x40 },
1679 { 2, 11, 8, 16, 0x21 },
1680 { 1, 12, 8, 16, 0x30 },
1681 { 1, 11, 9, 16, 0x24 },
1682 { 1, 11, 8, 8, 0x20 },
1683 { 2, 9, 8, 4, 0x01 },
1684 { 1, 10, 8, 4, 0x10 },
1685 { 1, 9, 8, 2, 0x00 }
1686 };
1687
1688 *iret = 1; /* error */
1689
1690 for (i = 0; i < 13; i++) {
1691 ret |= SETIREGANDOR(SISSR, 0x13, 0x80, sdramtype[i][4]);
1692 for (j = 2; j > 0; j--) {
1693 ret |= sisusb_set_rank(sisusb, &i2ret, i, j, chab,
1694 sdramtype, bw);
1695 if (!i2ret)
1696 continue;
1697
1698 ret |= sisusb_check_ranks(sisusb, &i2ret, j, i, bw,
1699 sdramtype);
1700 if (i2ret) {
1701 *iret = 0; /* ram size found */
1702 return ret;
1703 }
1704 }
1705 }
1706
1707 return ret;
1708}
1709
1710static int sisusb_setup_screen(struct sisusb_usb_data *sisusb,
1711 int clrall, int drwfr)
1712{
1713 int ret = 0;
1714 u32 address;
1715 int i, length, modex, modey, bpp;
1716
1717 modex = 640; modey = 480; bpp = 2;
1718
1719 address = sisusb->vrambase; /* Clear video ram */
1720
1721 if (clrall)
1722 length = sisusb->vramsize;
1723 else
1724 length = modex * bpp * modey;
1725
1726 ret = sisusb_clear_vram(sisusb, address, length);
1727
1728 if (!ret && drwfr) {
1729 for (i = 0; i < modex; i++) {
1730 address = sisusb->vrambase + (i * bpp);
1731 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1732 address, 0xf100);
1733 address += (modex * (modey-1) * bpp);
1734 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1735 address, 0xf100);
1736 }
1737 for (i = 0; i < modey; i++) {
1738 address = sisusb->vrambase + ((i * modex) * bpp);
1739 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1740 address, 0xf100);
1741 address += ((modex - 1) * bpp);
1742 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1743 address, 0xf100);
1744 }
1745 }
1746
1747 return ret;
1748}
1749
1750static void sisusb_set_default_mode(struct sisusb_usb_data *sisusb,
1751 int touchengines)
1752{
1753 int i, j, modex, bpp, du;
1754 u8 sr31, cr63, tmp8;
1755 static const char attrdata[] = {
1756 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
1757 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
1758 0x01, 0x00, 0x00, 0x00
1759 };
1760 static const char crtcrdata[] = {
1761 0x5f, 0x4f, 0x50, 0x82, 0x54, 0x80, 0x0b, 0x3e,
1762 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1763 0xea, 0x8c, 0xdf, 0x28, 0x40, 0xe7, 0x04, 0xa3,
1764 0xff
1765 };
1766 static const char grcdata[] = {
1767 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0f,
1768 0xff
1769 };
1770 static const char crtcdata[] = {
1771 0x5f, 0x4f, 0x4f, 0x83, 0x55, 0x81, 0x0b, 0x3e,
1772 0xe9, 0x8b, 0xdf, 0xe8, 0x0c, 0x00, 0x00, 0x05,
1773 0x00
1774 };
1775
1776 modex = 640; bpp = 2;
1777
1778 GETIREG(SISSR, 0x31, &sr31);
1779 GETIREG(SISCR, 0x63, &cr63);
1780 SETIREGOR(SISSR, 0x01, 0x20);
1781 SETIREG(SISCR, 0x63, cr63 & 0xbf);
1782 SETIREGOR(SISCR, 0x17, 0x80);
1783 SETIREGOR(SISSR, 0x1f, 0x04);
1784 SETIREGAND(SISSR, 0x07, 0xfb);
1785 SETIREG(SISSR, 0x00, 0x03); /* seq */
1786 SETIREG(SISSR, 0x01, 0x21);
1787 SETIREG(SISSR, 0x02, 0x0f);
1788 SETIREG(SISSR, 0x03, 0x00);
1789 SETIREG(SISSR, 0x04, 0x0e);
1790 SETREG(SISMISCW, 0x23); /* misc */
1791 for (i = 0; i <= 0x18; i++) { /* crtc */
1792 SETIREG(SISCR, i, crtcrdata[i]);
1793 }
1794 for (i = 0; i <= 0x13; i++) { /* att */
1795 GETREG(SISINPSTAT, &tmp8);
1796 SETREG(SISAR, i);
1797 SETREG(SISAR, attrdata[i]);
1798 }
1799 GETREG(SISINPSTAT, &tmp8);
1800 SETREG(SISAR, 0x14);
1801 SETREG(SISAR, 0x00);
1802 GETREG(SISINPSTAT, &tmp8);
1803 SETREG(SISAR, 0x20);
1804 GETREG(SISINPSTAT, &tmp8);
1805 for (i = 0; i <= 0x08; i++) { /* grc */
1806 SETIREG(SISGR, i, grcdata[i]);
1807 }
1808 SETIREGAND(SISGR, 0x05, 0xbf);
1809 for (i = 0x0A; i <= 0x0E; i++) { /* clr ext */
1810 SETIREG(SISSR, i, 0x00);
1811 }
1812 SETIREGAND(SISSR, 0x37, 0xfe);
1813 SETREG(SISMISCW, 0xef); /* sync */
1814 SETIREG(SISCR, 0x11, 0x00); /* crtc */
1815 for (j = 0x00, i = 0; i <= 7; i++, j++)
1816 SETIREG(SISCR, j, crtcdata[i]);
1817
1818 for (j = 0x10; i <= 10; i++, j++)
1819 SETIREG(SISCR, j, crtcdata[i]);
1820
1821 for (j = 0x15; i <= 12; i++, j++)
1822 SETIREG(SISCR, j, crtcdata[i]);
1823
1824 for (j = 0x0A; i <= 15; i++, j++)
1825 SETIREG(SISSR, j, crtcdata[i]);
1826
1827 SETIREG(SISSR, 0x0E, (crtcdata[16] & 0xE0));
1828 SETIREGANDOR(SISCR, 0x09, 0x5f, ((crtcdata[16] & 0x01) << 5));
1829 SETIREG(SISCR, 0x14, 0x4f);
1830 du = (modex / 16) * (bpp * 2); /* offset/pitch */
1831 SETIREGANDOR(SISSR, 0x0e, 0xf0, ((du >> 8) & 0x0f));
1832 SETIREG(SISCR, 0x13, (du & 0xff));
1833 du <<= 5;
1834 tmp8 = du >> 8;
1835 SETIREG(SISSR, 0x10, tmp8);
1836 SETIREG(SISSR, 0x31, 0x00); /* VCLK */
1837 SETIREG(SISSR, 0x2b, 0x1b);
1838 SETIREG(SISSR, 0x2c, 0xe1);
1839 SETIREG(SISSR, 0x2d, 0x01);
1840 SETIREGAND(SISSR, 0x3d, 0xfe); /* FIFO */
1841 SETIREG(SISSR, 0x08, 0xae);
1842 SETIREGAND(SISSR, 0x09, 0xf0);
1843 SETIREG(SISSR, 0x08, 0x34);
1844 SETIREGOR(SISSR, 0x3d, 0x01);
1845 SETIREGAND(SISSR, 0x1f, 0x3f); /* mode regs */
1846 SETIREGANDOR(SISSR, 0x06, 0xc0, 0x0a);
1847 SETIREG(SISCR, 0x19, 0x00);
1848 SETIREGAND(SISCR, 0x1a, 0xfc);
1849 SETIREGAND(SISSR, 0x0f, 0xb7);
1850 SETIREGAND(SISSR, 0x31, 0xfb);
1851 SETIREGANDOR(SISSR, 0x21, 0x1f, 0xa0);
1852 SETIREGAND(SISSR, 0x32, 0xf3);
1853 SETIREGANDOR(SISSR, 0x07, 0xf8, 0x03);
1854 SETIREG(SISCR, 0x52, 0x6c);
1855
1856 SETIREG(SISCR, 0x0d, 0x00); /* adjust frame */
1857 SETIREG(SISCR, 0x0c, 0x00);
1858 SETIREG(SISSR, 0x0d, 0x00);
1859 SETIREGAND(SISSR, 0x37, 0xfe);
1860
1861 SETIREG(SISCR, 0x32, 0x20);
1862 SETIREGAND(SISSR, 0x01, 0xdf); /* enable display */
1863 SETIREG(SISCR, 0x63, (cr63 & 0xbf));
1864 SETIREG(SISSR, 0x31, (sr31 & 0xfb));
1865
1866 if (touchengines) {
1867 SETIREG(SISSR, 0x20, 0xa1); /* enable engines */
1868 SETIREGOR(SISSR, 0x1e, 0x5a);
1869
1870 SETIREG(SISSR, 0x26, 0x01); /* disable cmdqueue */
1871 SETIREG(SISSR, 0x27, 0x1f);
1872 SETIREG(SISSR, 0x26, 0x00);
1873 }
1874
1875 SETIREG(SISCR, 0x34, 0x44); /* we just set std mode #44 */
1876}
1877
1878static int sisusb_init_gfxcore(struct sisusb_usb_data *sisusb)
1879{
1880 int ret = 0, i, j, bw, chab, iret, retry = 3;
1881 u8 tmp8, ramtype;
1882 u32 tmp32;
1883 static const char mclktable[] = {
1884 0x3b, 0x22, 0x01, 143,
1885 0x3b, 0x22, 0x01, 143,
1886 0x3b, 0x22, 0x01, 143,
1887 0x3b, 0x22, 0x01, 143
1888 };
1889 static const char eclktable[] = {
1890 0x3b, 0x22, 0x01, 143,
1891 0x3b, 0x22, 0x01, 143,
1892 0x3b, 0x22, 0x01, 143,
1893 0x3b, 0x22, 0x01, 143
1894 };
1895 static const char ramtypetable1[] = {
1896 0x00, 0x04, 0x60, 0x60,
1897 0x0f, 0x0f, 0x1f, 0x1f,
1898 0xba, 0xba, 0xba, 0xba,
1899 0xa9, 0xa9, 0xac, 0xac,
1900 0xa0, 0xa0, 0xa0, 0xa8,
1901 0x00, 0x00, 0x02, 0x02,
1902 0x30, 0x30, 0x40, 0x40
1903 };
1904 static const char ramtypetable2[] = {
1905 0x77, 0x77, 0x44, 0x44,
1906 0x77, 0x77, 0x44, 0x44,
1907 0x00, 0x00, 0x00, 0x00,
1908 0x5b, 0x5b, 0xab, 0xab,
1909 0x00, 0x00, 0xf0, 0xf8
1910 };
1911
1912 while (retry--) {
1913
1914 /* Enable VGA */
1915 ret = GETREG(SISVGAEN, &tmp8);
1916 ret |= SETREG(SISVGAEN, (tmp8 | 0x01));
1917
1918 /* Enable GPU access to VRAM */
1919 ret |= GETREG(SISMISCR, &tmp8);
1920 ret |= SETREG(SISMISCW, (tmp8 | 0x01));
1921
1922 if (ret)
1923 continue;
1924
1925 /* Reset registers */
1926 ret |= SETIREGAND(SISCR, 0x5b, 0xdf);
1927 ret |= SETIREG(SISSR, 0x05, 0x86);
1928 ret |= SETIREGOR(SISSR, 0x20, 0x01);
1929
1930 ret |= SETREG(SISMISCW, 0x67);
1931
1932 for (i = 0x06; i <= 0x1f; i++)
1933 ret |= SETIREG(SISSR, i, 0x00);
1934
1935 for (i = 0x21; i <= 0x27; i++)
1936 ret |= SETIREG(SISSR, i, 0x00);
1937
1938 for (i = 0x31; i <= 0x3d; i++)
1939 ret |= SETIREG(SISSR, i, 0x00);
1940
1941 for (i = 0x12; i <= 0x1b; i++)
1942 ret |= SETIREG(SISSR, i, 0x00);
1943
1944 for (i = 0x79; i <= 0x7c; i++)
1945 ret |= SETIREG(SISCR, i, 0x00);
1946
1947 if (ret)
1948 continue;
1949
1950 ret |= SETIREG(SISCR, 0x63, 0x80);
1951
1952 ret |= GETIREG(SISSR, 0x3a, &ramtype);
1953 ramtype &= 0x03;
1954
1955 ret |= SETIREG(SISSR, 0x28, mclktable[ramtype * 4]);
1956 ret |= SETIREG(SISSR, 0x29, mclktable[(ramtype * 4) + 1]);
1957 ret |= SETIREG(SISSR, 0x2a, mclktable[(ramtype * 4) + 2]);
1958
1959 ret |= SETIREG(SISSR, 0x2e, eclktable[ramtype * 4]);
1960 ret |= SETIREG(SISSR, 0x2f, eclktable[(ramtype * 4) + 1]);
1961 ret |= SETIREG(SISSR, 0x30, eclktable[(ramtype * 4) + 2]);
1962
1963 ret |= SETIREG(SISSR, 0x07, 0x18);
1964 ret |= SETIREG(SISSR, 0x11, 0x0f);
1965
1966 if (ret)
1967 continue;
1968
1969 for (i = 0x15, j = 0; i <= 0x1b; i++, j++) {
1970 ret |= SETIREG(SISSR, i,
1971 ramtypetable1[(j*4) + ramtype]);
1972 }
1973 for (i = 0x40, j = 0; i <= 0x44; i++, j++) {
1974 ret |= SETIREG(SISCR, i,
1975 ramtypetable2[(j*4) + ramtype]);
1976 }
1977
1978 ret |= SETIREG(SISCR, 0x49, 0xaa);
1979
1980 ret |= SETIREG(SISSR, 0x1f, 0x00);
1981 ret |= SETIREG(SISSR, 0x20, 0xa0);
1982 ret |= SETIREG(SISSR, 0x23, 0xf6);
1983 ret |= SETIREG(SISSR, 0x24, 0x0d);
1984 ret |= SETIREG(SISSR, 0x25, 0x33);
1985
1986 ret |= SETIREG(SISSR, 0x11, 0x0f);
1987
1988 ret |= SETIREGOR(SISPART1, 0x2f, 0x01);
1989
1990 ret |= SETIREGAND(SISCAP, 0x3f, 0xef);
1991
1992 if (ret)
1993 continue;
1994
1995 ret |= SETIREG(SISPART1, 0x00, 0x00);
1996
1997 ret |= GETIREG(SISSR, 0x13, &tmp8);
1998 tmp8 >>= 4;
1999
2000 ret |= SETIREG(SISPART1, 0x02, 0x00);
2001 ret |= SETIREG(SISPART1, 0x2e, 0x08);
2002
2003 ret |= sisusb_read_pci_config(sisusb, 0x50, &tmp32);
2004 tmp32 &= 0x00f00000;
2005 tmp8 = (tmp32 == 0x100000) ? 0x33 : 0x03;
2006 ret |= SETIREG(SISSR, 0x25, tmp8);
2007 tmp8 = (tmp32 == 0x100000) ? 0xaa : 0x88;
2008 ret |= SETIREG(SISCR, 0x49, tmp8);
2009
2010 ret |= SETIREG(SISSR, 0x27, 0x1f);
2011 ret |= SETIREG(SISSR, 0x31, 0x00);
2012 ret |= SETIREG(SISSR, 0x32, 0x11);
2013 ret |= SETIREG(SISSR, 0x33, 0x00);
2014
2015 if (ret)
2016 continue;
2017
2018 ret |= SETIREG(SISCR, 0x83, 0x00);
2019
2020 sisusb_set_default_mode(sisusb, 0);
2021
2022 ret |= SETIREGAND(SISSR, 0x21, 0xdf);
2023 ret |= SETIREGOR(SISSR, 0x01, 0x20);
2024 ret |= SETIREGOR(SISSR, 0x16, 0x0f);
2025
2026 ret |= sisusb_triggersr16(sisusb, ramtype);
2027
2028 /* Disable refresh */
2029 ret |= SETIREGAND(SISSR, 0x17, 0xf8);
2030 ret |= SETIREGOR(SISSR, 0x19, 0x03);
2031
2032 ret |= sisusb_getbuswidth(sisusb, &bw, &chab);
2033 ret |= sisusb_verify_mclk(sisusb);
2034
2035 if (ramtype <= 1) {
2036 ret |= sisusb_get_sdram_size(sisusb, &iret, bw, chab);
2037 if (iret) {
2038 dev_err(&sisusb->sisusb_dev->dev,
2039 "RAM size detection failed, assuming 8MB video RAM\n");
2040 ret |= SETIREG(SISSR, 0x14, 0x31);
2041 /* TODO */
2042 }
2043 } else {
2044 dev_err(&sisusb->sisusb_dev->dev,
2045 "DDR RAM device found, assuming 8MB video RAM\n");
2046 ret |= SETIREG(SISSR, 0x14, 0x31);
2047 /* *** TODO *** */
2048 }
2049
2050 /* Enable refresh */
2051 ret |= SETIREG(SISSR, 0x16, ramtypetable1[4 + ramtype]);
2052 ret |= SETIREG(SISSR, 0x17, ramtypetable1[8 + ramtype]);
2053 ret |= SETIREG(SISSR, 0x19, ramtypetable1[16 + ramtype]);
2054
2055 ret |= SETIREGOR(SISSR, 0x21, 0x20);
2056
2057 ret |= SETIREG(SISSR, 0x22, 0xfb);
2058 ret |= SETIREG(SISSR, 0x21, 0xa5);
2059
2060 if (ret == 0)
2061 break;
2062 }
2063
2064 return ret;
2065}
2066
2067#undef SETREG
2068#undef GETREG
2069#undef SETIREG
2070#undef GETIREG
2071#undef SETIREGOR
2072#undef SETIREGAND
2073#undef SETIREGANDOR
2074#undef READL
2075#undef WRITEL
2076
2077static void sisusb_get_ramconfig(struct sisusb_usb_data *sisusb)
2078{
2079 u8 tmp8, tmp82, ramtype;
2080 int bw = 0;
2081 char *ramtypetext1 = NULL;
2082 static const char ram_datarate[4] = {'S', 'S', 'D', 'D'};
2083 static const char ram_dynamictype[4] = {'D', 'G', 'D', 'G'};
2084 static const int busSDR[4] = {64, 64, 128, 128};
2085 static const int busDDR[4] = {32, 32, 64, 64};
2086 static const int busDDRA[4] = {64+32, 64+32, (64+32)*2, (64+32)*2};
2087
2088 sisusb_getidxreg(sisusb, SISSR, 0x14, &tmp8);
2089 sisusb_getidxreg(sisusb, SISSR, 0x15, &tmp82);
2090 sisusb_getidxreg(sisusb, SISSR, 0x3a, &ramtype);
2091 sisusb->vramsize = (1 << ((tmp8 & 0xf0) >> 4)) * 1024 * 1024;
2092 ramtype &= 0x03;
2093 switch ((tmp8 >> 2) & 0x03) {
2094 case 0:
2095 ramtypetext1 = "1 ch/1 r";
2096 if (tmp82 & 0x10)
2097 bw = 32;
2098 else
2099 bw = busSDR[(tmp8 & 0x03)];
2100
2101 break;
2102 case 1:
2103 ramtypetext1 = "1 ch/2 r";
2104 sisusb->vramsize <<= 1;
2105 bw = busSDR[(tmp8 & 0x03)];
2106 break;
2107 case 2:
2108 ramtypetext1 = "asymmetric";
2109 sisusb->vramsize += sisusb->vramsize/2;
2110 bw = busDDRA[(tmp8 & 0x03)];
2111 break;
2112 case 3:
2113 ramtypetext1 = "2 channel";
2114 sisusb->vramsize <<= 1;
2115 bw = busDDR[(tmp8 & 0x03)];
2116 break;
2117 }
2118
2119 dev_info(&sisusb->sisusb_dev->dev,
2120 "%dMB %s %cDR S%cRAM, bus width %d\n",
2121 sisusb->vramsize >> 20, ramtypetext1,
2122 ram_datarate[ramtype], ram_dynamictype[ramtype], bw);
2123}
2124
2125static int sisusb_do_init_gfxdevice(struct sisusb_usb_data *sisusb)
2126{
2127 struct sisusb_packet packet;
2128 int ret;
2129 u32 tmp32;
2130
2131 /* Do some magic */
2132 packet.header = 0x001f;
2133 packet.address = 0x00000324;
2134 packet.data = 0x00000004;
2135 ret = sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2136
2137 packet.header = 0x001f;
2138 packet.address = 0x00000364;
2139 packet.data = 0x00000004;
2140 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2141
2142 packet.header = 0x001f;
2143 packet.address = 0x00000384;
2144 packet.data = 0x00000004;
2145 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2146
2147 packet.header = 0x001f;
2148 packet.address = 0x00000100;
2149 packet.data = 0x00000700;
2150 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2151
2152 packet.header = 0x000f;
2153 packet.address = 0x00000004;
2154 ret |= sisusb_send_bridge_packet(sisusb, 6, &packet, 0);
2155 packet.data |= 0x17;
2156 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2157
2158 /* Init BAR 0 (VRAM) */
2159 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2160 ret |= sisusb_write_pci_config(sisusb, 0x10, 0xfffffff0);
2161 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2162 tmp32 &= 0x0f;
2163 tmp32 |= SISUSB_PCI_MEMBASE;
2164 ret |= sisusb_write_pci_config(sisusb, 0x10, tmp32);
2165
2166 /* Init BAR 1 (MMIO) */
2167 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2168 ret |= sisusb_write_pci_config(sisusb, 0x14, 0xfffffff0);
2169 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2170 tmp32 &= 0x0f;
2171 tmp32 |= SISUSB_PCI_MMIOBASE;
2172 ret |= sisusb_write_pci_config(sisusb, 0x14, tmp32);
2173
2174 /* Init BAR 2 (i/o ports) */
2175 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2176 ret |= sisusb_write_pci_config(sisusb, 0x18, 0xfffffff0);
2177 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2178 tmp32 &= 0x0f;
2179 tmp32 |= SISUSB_PCI_IOPORTBASE;
2180 ret |= sisusb_write_pci_config(sisusb, 0x18, tmp32);
2181
2182 /* Enable memory and i/o access */
2183 ret |= sisusb_read_pci_config(sisusb, 0x04, &tmp32);
2184 tmp32 |= 0x3;
2185 ret |= sisusb_write_pci_config(sisusb, 0x04, tmp32);
2186
2187 if (ret == 0) {
2188 /* Some further magic */
2189 packet.header = 0x001f;
2190 packet.address = 0x00000050;
2191 packet.data = 0x000000ff;
2192 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2193 }
2194
2195 return ret;
2196}
2197
2198/* Initialize the graphics device (return 0 on success)
2199 * This initializes the net2280 as well as the PCI registers
2200 * of the graphics board.
2201 */
2202
2203static int sisusb_init_gfxdevice(struct sisusb_usb_data *sisusb, int initscreen)
2204{
2205 int ret = 0, test = 0;
2206 u32 tmp32;
2207
2208 if (sisusb->devinit == 1) {
2209 /* Read PCI BARs and see if they have been set up */
2210 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2211 if (ret)
2212 return ret;
2213
2214 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MEMBASE)
2215 test++;
2216
2217 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2218 if (ret)
2219 return ret;
2220
2221 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MMIOBASE)
2222 test++;
2223
2224 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2225 if (ret)
2226 return ret;
2227
2228 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_IOPORTBASE)
2229 test++;
2230 }
2231
2232 /* No? So reset the device */
2233 if ((sisusb->devinit == 0) || (test != 3)) {
2234
2235 ret |= sisusb_do_init_gfxdevice(sisusb);
2236
2237 if (ret == 0)
2238 sisusb->devinit = 1;
2239
2240 }
2241
2242 if (sisusb->devinit) {
2243 /* Initialize the graphics core */
2244 if (sisusb_init_gfxcore(sisusb) == 0) {
2245 sisusb->gfxinit = 1;
2246 sisusb_get_ramconfig(sisusb);
2247 sisusb_set_default_mode(sisusb, 1);
2248 ret |= sisusb_setup_screen(sisusb, 1, initscreen);
2249 }
2250 }
2251
2252 return ret;
2253}
2254
2255
2256#ifdef CONFIG_USB_SISUSBVGA_CON
2257
2258/* Set up default text mode:
2259 * - Set text mode (0x03)
2260 * - Upload default font
2261 * - Upload user font (if available)
2262 */
2263
2264int sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init)
2265{
2266 int ret = 0, slot = sisusb->font_slot, i;
2267 const struct font_desc *myfont;
2268 u8 *tempbuf;
2269 u16 *tempbufb;
2270 static const char bootstring[] =
2271 "SiSUSB VGA text console, (C) 2005 Thomas Winischhofer.";
2272 static const char bootlogo[] = "(o_ //\\ V_/_";
2273
2274 /* sisusb->lock is down */
2275
2276 if (!sisusb->SiS_Pr)
2277 return 1;
2278
2279 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2280 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2281
2282 /* Set mode 0x03 */
2283 SiSUSBSetMode(sisusb->SiS_Pr, 0x03);
2284
2285 myfont = find_font("VGA8x16");
2286 if (!myfont)
2287 return 1;
2288
2289 tempbuf = vmalloc(8192);
2290 if (!tempbuf)
2291 return 1;
2292
2293 for (i = 0; i < 256; i++)
2294 memcpy(tempbuf + (i * 32), myfont->data + (i * 16), 16);
2295
2296 /* Upload default font */
2297 ret = sisusbcon_do_font_op(sisusb, 1, 0, tempbuf, 8192,
2298 0, 1, NULL, 16, 0);
2299
2300 vfree(tempbuf);
2301
2302 /* Upload user font (and reset current slot) */
2303 if (sisusb->font_backup) {
2304 ret |= sisusbcon_do_font_op(sisusb, 1, 2, sisusb->font_backup,
2305 8192, sisusb->font_backup_512, 1, NULL,
2306 sisusb->font_backup_height, 0);
2307 if (slot != 2)
2308 sisusbcon_do_font_op(sisusb, 1, 0, NULL, 0, 0, 1,
2309 NULL, 16, 0);
2310 }
2311
2312 if (init && !sisusb->scrbuf) {
2313
2314 tempbuf = vmalloc(8192);
2315 if (tempbuf) {
2316
2317 i = 4096;
2318 tempbufb = (u16 *)tempbuf;
2319 while (i--)
2320 *(tempbufb++) = 0x0720;
2321
2322 i = 0;
2323 tempbufb = (u16 *)tempbuf;
2324 while (bootlogo[i]) {
2325 *(tempbufb++) = 0x0700 | bootlogo[i++];
2326 if (!(i % 4))
2327 tempbufb += 76;
2328 }
2329
2330 i = 0;
2331 tempbufb = (u16 *)tempbuf + 6;
2332 while (bootstring[i])
2333 *(tempbufb++) = 0x0700 | bootstring[i++];
2334
2335 ret |= sisusb_copy_memory(sisusb, tempbuf,
2336 sisusb->vrambase, 8192);
2337
2338 vfree(tempbuf);
2339
2340 }
2341
2342 } else if (sisusb->scrbuf) {
2343 ret |= sisusb_copy_memory(sisusb, (u8 *)sisusb->scrbuf,
2344 sisusb->vrambase, sisusb->scrbuf_size);
2345 }
2346
2347 if (sisusb->sisusb_cursor_size_from >= 0 &&
2348 sisusb->sisusb_cursor_size_to >= 0) {
2349 sisusb_setidxreg(sisusb, SISCR, 0x0a,
2350 sisusb->sisusb_cursor_size_from);
2351 sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0,
2352 sisusb->sisusb_cursor_size_to);
2353 } else {
2354 sisusb_setidxreg(sisusb, SISCR, 0x0a, 0x2d);
2355 sisusb_setidxreg(sisusb, SISCR, 0x0b, 0x0e);
2356 sisusb->sisusb_cursor_size_to = -1;
2357 }
2358
2359 slot = sisusb->sisusb_cursor_loc;
2360 if (slot < 0)
2361 slot = 0;
2362
2363 sisusb->sisusb_cursor_loc = -1;
2364 sisusb->bad_cursor_pos = 1;
2365
2366 sisusb_set_cursor(sisusb, slot);
2367
2368 sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8));
2369 sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff));
2370
2371 sisusb->textmodedestroyed = 0;
2372
2373 /* sisusb->lock is down */
2374
2375 return ret;
2376}
2377
2378#endif
2379
2380/* fops */
2381
2382static int sisusb_open(struct inode *inode, struct file *file)
2383{
2384 struct sisusb_usb_data *sisusb;
2385 struct usb_interface *interface;
2386 int subminor = iminor(inode);
2387
2388 interface = usb_find_interface(&sisusb_driver, subminor);
2389 if (!interface)
2390 return -ENODEV;
2391
2392 sisusb = usb_get_intfdata(interface);
2393 if (!sisusb)
2394 return -ENODEV;
2395
2396 mutex_lock(&sisusb->lock);
2397
2398 if (!sisusb->present || !sisusb->ready) {
2399 mutex_unlock(&sisusb->lock);
2400 return -ENODEV;
2401 }
2402
2403 if (sisusb->isopen) {
2404 mutex_unlock(&sisusb->lock);
2405 return -EBUSY;
2406 }
2407
2408 if (!sisusb->devinit) {
2409 if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH ||
2410 sisusb->sisusb_dev->speed >= USB_SPEED_SUPER) {
2411 if (sisusb_init_gfxdevice(sisusb, 0)) {
2412 mutex_unlock(&sisusb->lock);
2413 dev_err(&sisusb->sisusb_dev->dev,
2414 "Failed to initialize device\n");
2415 return -EIO;
2416 }
2417 } else {
2418 mutex_unlock(&sisusb->lock);
2419 dev_err(&sisusb->sisusb_dev->dev,
2420 "Device not attached to USB 2.0 hub\n");
2421 return -EIO;
2422 }
2423 }
2424
2425 /* Increment usage count for our sisusb */
2426 kref_get(&sisusb->kref);
2427
2428 sisusb->isopen = 1;
2429
2430 file->private_data = sisusb;
2431
2432 mutex_unlock(&sisusb->lock);
2433
2434 return 0;
2435}
2436
2437void sisusb_delete(struct kref *kref)
2438{
2439 struct sisusb_usb_data *sisusb = to_sisusb_dev(kref);
2440
2441 if (!sisusb)
2442 return;
2443
2444 usb_put_dev(sisusb->sisusb_dev);
2445
2446 sisusb->sisusb_dev = NULL;
2447 sisusb_free_buffers(sisusb);
2448 sisusb_free_urbs(sisusb);
2449#ifdef CONFIG_USB_SISUSBVGA_CON
2450 kfree(sisusb->SiS_Pr);
2451#endif
2452 kfree(sisusb);
2453}
2454
2455static int sisusb_release(struct inode *inode, struct file *file)
2456{
2457 struct sisusb_usb_data *sisusb;
2458
2459 sisusb = file->private_data;
2460 if (!sisusb)
2461 return -ENODEV;
2462
2463 mutex_lock(&sisusb->lock);
2464
2465 if (sisusb->present) {
2466 /* Wait for all URBs to finish if device still present */
2467 if (!sisusb_wait_all_out_complete(sisusb))
2468 sisusb_kill_all_busy(sisusb);
2469 }
2470
2471 sisusb->isopen = 0;
2472 file->private_data = NULL;
2473
2474 mutex_unlock(&sisusb->lock);
2475
2476 /* decrement the usage count on our device */
2477 kref_put(&sisusb->kref, sisusb_delete);
2478
2479 return 0;
2480}
2481
2482static ssize_t sisusb_read(struct file *file, char __user *buffer,
2483 size_t count, loff_t *ppos)
2484{
2485 struct sisusb_usb_data *sisusb;
2486 ssize_t bytes_read = 0;
2487 int errno = 0;
2488 u8 buf8;
2489 u16 buf16;
2490 u32 buf32, address;
2491
2492 sisusb = file->private_data;
2493 if (!sisusb)
2494 return -ENODEV;
2495
2496 mutex_lock(&sisusb->lock);
2497
2498 /* Sanity check */
2499 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2500 mutex_unlock(&sisusb->lock);
2501 return -ENODEV;
2502 }
2503
2504 if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
2505 (*ppos) < SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
2506
2507 address = (*ppos) - SISUSB_PCI_PSEUDO_IOPORTBASE +
2508 SISUSB_PCI_IOPORTBASE;
2509
2510 /* Read i/o ports
2511 * Byte, word and long(32) can be read. As this
2512 * emulates inX instructions, the data returned is
2513 * in machine-endianness.
2514 */
2515 switch (count) {
2516 case 1:
2517 if (sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO,
2518 address, &buf8))
2519 errno = -EIO;
2520 else if (put_user(buf8, (u8 __user *)buffer))
2521 errno = -EFAULT;
2522 else
2523 bytes_read = 1;
2524
2525 break;
2526
2527 case 2:
2528 if (sisusb_read_memio_word(sisusb, SISUSB_TYPE_IO,
2529 address, &buf16))
2530 errno = -EIO;
2531 else if (put_user(buf16, (u16 __user *)buffer))
2532 errno = -EFAULT;
2533 else
2534 bytes_read = 2;
2535
2536 break;
2537
2538 case 4:
2539 if (sisusb_read_memio_long(sisusb, SISUSB_TYPE_IO,
2540 address, &buf32))
2541 errno = -EIO;
2542 else if (put_user(buf32, (u32 __user *)buffer))
2543 errno = -EFAULT;
2544 else
2545 bytes_read = 4;
2546
2547 break;
2548
2549 default:
2550 errno = -EIO;
2551
2552 }
2553
2554 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE && (*ppos) <
2555 SISUSB_PCI_PSEUDO_MEMBASE + sisusb->vramsize) {
2556
2557 address = (*ppos) - SISUSB_PCI_PSEUDO_MEMBASE +
2558 SISUSB_PCI_MEMBASE;
2559
2560 /* Read video ram
2561 * Remember: Data delivered is never endian-corrected
2562 */
2563 errno = sisusb_read_mem_bulk(sisusb, address,
2564 NULL, count, buffer, &bytes_read);
2565
2566 if (bytes_read)
2567 errno = bytes_read;
2568
2569 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
2570 (*ppos) < SISUSB_PCI_PSEUDO_MMIOBASE +
2571 SISUSB_PCI_MMIOSIZE) {
2572
2573 address = (*ppos) - SISUSB_PCI_PSEUDO_MMIOBASE +
2574 SISUSB_PCI_MMIOBASE;
2575
2576 /* Read MMIO
2577 * Remember: Data delivered is never endian-corrected
2578 */
2579 errno = sisusb_read_mem_bulk(sisusb, address,
2580 NULL, count, buffer, &bytes_read);
2581
2582 if (bytes_read)
2583 errno = bytes_read;
2584
2585 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
2586 (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + 0x5c) {
2587
2588 if (count != 4) {
2589 mutex_unlock(&sisusb->lock);
2590 return -EINVAL;
2591 }
2592
2593 address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
2594
2595 /* Read PCI config register
2596 * Return value delivered in machine endianness.
2597 */
2598 if (sisusb_read_pci_config(sisusb, address, &buf32))
2599 errno = -EIO;
2600 else if (put_user(buf32, (u32 __user *)buffer))
2601 errno = -EFAULT;
2602 else
2603 bytes_read = 4;
2604
2605 } else {
2606
2607 errno = -EBADFD;
2608
2609 }
2610
2611 (*ppos) += bytes_read;
2612
2613 mutex_unlock(&sisusb->lock);
2614
2615 return errno ? errno : bytes_read;
2616}
2617
2618static ssize_t sisusb_write(struct file *file, const char __user *buffer,
2619 size_t count, loff_t *ppos)
2620{
2621 struct sisusb_usb_data *sisusb;
2622 int errno = 0;
2623 ssize_t bytes_written = 0;
2624 u8 buf8;
2625 u16 buf16;
2626 u32 buf32, address;
2627
2628 sisusb = file->private_data;
2629 if (!sisusb)
2630 return -ENODEV;
2631
2632 mutex_lock(&sisusb->lock);
2633
2634 /* Sanity check */
2635 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2636 mutex_unlock(&sisusb->lock);
2637 return -ENODEV;
2638 }
2639
2640 if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
2641 (*ppos) < SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
2642
2643 address = (*ppos) - SISUSB_PCI_PSEUDO_IOPORTBASE +
2644 SISUSB_PCI_IOPORTBASE;
2645
2646 /* Write i/o ports
2647 * Byte, word and long(32) can be written. As this
2648 * emulates outX instructions, the data is expected
2649 * in machine-endianness.
2650 */
2651 switch (count) {
2652 case 1:
2653 if (get_user(buf8, (u8 __user *)buffer))
2654 errno = -EFAULT;
2655 else if (sisusb_write_memio_byte(sisusb,
2656 SISUSB_TYPE_IO, address, buf8))
2657 errno = -EIO;
2658 else
2659 bytes_written = 1;
2660
2661 break;
2662
2663 case 2:
2664 if (get_user(buf16, (u16 __user *)buffer))
2665 errno = -EFAULT;
2666 else if (sisusb_write_memio_word(sisusb,
2667 SISUSB_TYPE_IO, address, buf16))
2668 errno = -EIO;
2669 else
2670 bytes_written = 2;
2671
2672 break;
2673
2674 case 4:
2675 if (get_user(buf32, (u32 __user *)buffer))
2676 errno = -EFAULT;
2677 else if (sisusb_write_memio_long(sisusb,
2678 SISUSB_TYPE_IO, address, buf32))
2679 errno = -EIO;
2680 else
2681 bytes_written = 4;
2682
2683 break;
2684
2685 default:
2686 errno = -EIO;
2687 }
2688
2689 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE &&
2690 (*ppos) < SISUSB_PCI_PSEUDO_MEMBASE +
2691 sisusb->vramsize) {
2692
2693 address = (*ppos) - SISUSB_PCI_PSEUDO_MEMBASE +
2694 SISUSB_PCI_MEMBASE;
2695
2696 /* Write video ram.
2697 * Buffer is copied 1:1, therefore, on big-endian
2698 * machines, the data must be swapped by userland
2699 * in advance (if applicable; no swapping in 8bpp
2700 * mode or if YUV data is being transferred).
2701 */
2702 errno = sisusb_write_mem_bulk(sisusb, address, NULL,
2703 count, buffer, 0, &bytes_written);
2704
2705 if (bytes_written)
2706 errno = bytes_written;
2707
2708 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
2709 (*ppos) < SISUSB_PCI_PSEUDO_MMIOBASE +
2710 SISUSB_PCI_MMIOSIZE) {
2711
2712 address = (*ppos) - SISUSB_PCI_PSEUDO_MMIOBASE +
2713 SISUSB_PCI_MMIOBASE;
2714
2715 /* Write MMIO.
2716 * Buffer is copied 1:1, therefore, on big-endian
2717 * machines, the data must be swapped by userland
2718 * in advance.
2719 */
2720 errno = sisusb_write_mem_bulk(sisusb, address, NULL,
2721 count, buffer, 0, &bytes_written);
2722
2723 if (bytes_written)
2724 errno = bytes_written;
2725
2726 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
2727 (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE +
2728 SISUSB_PCI_PCONFSIZE) {
2729
2730 if (count != 4) {
2731 mutex_unlock(&sisusb->lock);
2732 return -EINVAL;
2733 }
2734
2735 address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
2736
2737 /* Write PCI config register.
2738 * Given value expected in machine endianness.
2739 */
2740 if (get_user(buf32, (u32 __user *)buffer))
2741 errno = -EFAULT;
2742 else if (sisusb_write_pci_config(sisusb, address, buf32))
2743 errno = -EIO;
2744 else
2745 bytes_written = 4;
2746
2747
2748 } else {
2749
2750 /* Error */
2751 errno = -EBADFD;
2752
2753 }
2754
2755 (*ppos) += bytes_written;
2756
2757 mutex_unlock(&sisusb->lock);
2758
2759 return errno ? errno : bytes_written;
2760}
2761
2762static loff_t sisusb_lseek(struct file *file, loff_t offset, int orig)
2763{
2764 struct sisusb_usb_data *sisusb;
2765 loff_t ret;
2766
2767 sisusb = file->private_data;
2768 if (!sisusb)
2769 return -ENODEV;
2770
2771 mutex_lock(&sisusb->lock);
2772
2773 /* Sanity check */
2774 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2775 mutex_unlock(&sisusb->lock);
2776 return -ENODEV;
2777 }
2778
2779 ret = no_seek_end_llseek(file, offset, orig);
2780
2781 mutex_unlock(&sisusb->lock);
2782 return ret;
2783}
2784
2785static int sisusb_handle_command(struct sisusb_usb_data *sisusb,
2786 struct sisusb_command *y, unsigned long arg)
2787{
2788 int retval, length;
2789 u32 port, address;
2790
2791 /* All our commands require the device
2792 * to be initialized.
2793 */
2794 if (!sisusb->devinit)
2795 return -ENODEV;
2796
2797 port = y->data3 -
2798 SISUSB_PCI_PSEUDO_IOPORTBASE +
2799 SISUSB_PCI_IOPORTBASE;
2800
2801 switch (y->operation) {
2802 case SUCMD_GET:
2803 retval = sisusb_getidxreg(sisusb, port, y->data0, &y->data1);
2804 if (!retval) {
2805 if (copy_to_user((void __user *)arg, y, sizeof(*y)))
2806 retval = -EFAULT;
2807 }
2808 break;
2809
2810 case SUCMD_SET:
2811 retval = sisusb_setidxreg(sisusb, port, y->data0, y->data1);
2812 break;
2813
2814 case SUCMD_SETOR:
2815 retval = sisusb_setidxregor(sisusb, port, y->data0, y->data1);
2816 break;
2817
2818 case SUCMD_SETAND:
2819 retval = sisusb_setidxregand(sisusb, port, y->data0, y->data1);
2820 break;
2821
2822 case SUCMD_SETANDOR:
2823 retval = sisusb_setidxregandor(sisusb, port, y->data0,
2824 y->data1, y->data2);
2825 break;
2826
2827 case SUCMD_SETMASK:
2828 retval = sisusb_setidxregmask(sisusb, port, y->data0,
2829 y->data1, y->data2);
2830 break;
2831
2832 case SUCMD_CLRSCR:
2833 /* Gfx core must be initialized */
2834 if (!sisusb->gfxinit)
2835 return -ENODEV;
2836
2837 length = (y->data0 << 16) | (y->data1 << 8) | y->data2;
2838 address = y->data3 - SISUSB_PCI_PSEUDO_MEMBASE +
2839 SISUSB_PCI_MEMBASE;
2840 retval = sisusb_clear_vram(sisusb, address, length);
2841 break;
2842
2843 case SUCMD_HANDLETEXTMODE:
2844 retval = 0;
2845#ifdef CONFIG_USB_SISUSBVGA_CON
2846 /* Gfx core must be initialized, SiS_Pr must exist */
2847 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2848 return -ENODEV;
2849
2850 switch (y->data0) {
2851 case 0:
2852 retval = sisusb_reset_text_mode(sisusb, 0);
2853 break;
2854 case 1:
2855 sisusb->textmodedestroyed = 1;
2856 break;
2857 }
2858#endif
2859 break;
2860
2861#ifdef CONFIG_USB_SISUSBVGA_CON
2862 case SUCMD_SETMODE:
2863 /* Gfx core must be initialized, SiS_Pr must exist */
2864 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2865 return -ENODEV;
2866
2867 retval = 0;
2868
2869 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2870 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2871
2872 if (SiSUSBSetMode(sisusb->SiS_Pr, y->data3))
2873 retval = -EINVAL;
2874
2875 break;
2876
2877 case SUCMD_SETVESAMODE:
2878 /* Gfx core must be initialized, SiS_Pr must exist */
2879 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2880 return -ENODEV;
2881
2882 retval = 0;
2883
2884 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2885 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2886
2887 if (SiSUSBSetVESAMode(sisusb->SiS_Pr, y->data3))
2888 retval = -EINVAL;
2889
2890 break;
2891#endif
2892
2893 default:
2894 retval = -EINVAL;
2895 }
2896
2897 if (retval > 0)
2898 retval = -EIO;
2899
2900 return retval;
2901}
2902
2903static long sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2904{
2905 struct sisusb_usb_data *sisusb;
2906 struct sisusb_info x;
2907 struct sisusb_command y;
2908 long retval = 0;
2909 u32 __user *argp = (u32 __user *)arg;
2910
2911 sisusb = file->private_data;
2912 if (!sisusb)
2913 return -ENODEV;
2914
2915 mutex_lock(&sisusb->lock);
2916
2917 /* Sanity check */
2918 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2919 retval = -ENODEV;
2920 goto err_out;
2921 }
2922
2923 switch (cmd) {
2924 case SISUSB_GET_CONFIG_SIZE:
2925
2926 if (put_user(sizeof(x), argp))
2927 retval = -EFAULT;
2928
2929 break;
2930
2931 case SISUSB_GET_CONFIG:
2932
2933 x.sisusb_id = SISUSB_ID;
2934 x.sisusb_version = SISUSB_VERSION;
2935 x.sisusb_revision = SISUSB_REVISION;
2936 x.sisusb_patchlevel = SISUSB_PATCHLEVEL;
2937 x.sisusb_gfxinit = sisusb->gfxinit;
2938 x.sisusb_vrambase = SISUSB_PCI_PSEUDO_MEMBASE;
2939 x.sisusb_mmiobase = SISUSB_PCI_PSEUDO_MMIOBASE;
2940 x.sisusb_iobase = SISUSB_PCI_PSEUDO_IOPORTBASE;
2941 x.sisusb_pcibase = SISUSB_PCI_PSEUDO_PCIBASE;
2942 x.sisusb_vramsize = sisusb->vramsize;
2943 x.sisusb_minor = sisusb->minor;
2944 x.sisusb_fbdevactive = 0;
2945#ifdef CONFIG_USB_SISUSBVGA_CON
2946 x.sisusb_conactive = sisusb->haveconsole ? 1 : 0;
2947#else
2948 x.sisusb_conactive = 0;
2949#endif
2950 memset(x.sisusb_reserved, 0, sizeof(x.sisusb_reserved));
2951
2952 if (copy_to_user((void __user *)arg, &x, sizeof(x)))
2953 retval = -EFAULT;
2954
2955 break;
2956
2957 case SISUSB_COMMAND:
2958
2959 if (copy_from_user(&y, (void __user *)arg, sizeof(y)))
2960 retval = -EFAULT;
2961 else
2962 retval = sisusb_handle_command(sisusb, &y, arg);
2963
2964 break;
2965
2966 default:
2967 retval = -ENOTTY;
2968 break;
2969 }
2970
2971err_out:
2972 mutex_unlock(&sisusb->lock);
2973 return retval;
2974}
2975
2976#ifdef CONFIG_COMPAT
2977static long sisusb_compat_ioctl(struct file *f, unsigned int cmd,
2978 unsigned long arg)
2979{
2980 switch (cmd) {
2981 case SISUSB_GET_CONFIG_SIZE:
2982 case SISUSB_GET_CONFIG:
2983 case SISUSB_COMMAND:
2984 return sisusb_ioctl(f, cmd, arg);
2985
2986 default:
2987 return -ENOIOCTLCMD;
2988 }
2989}
2990#endif
2991
2992static const struct file_operations usb_sisusb_fops = {
2993 .owner = THIS_MODULE,
2994 .open = sisusb_open,
2995 .release = sisusb_release,
2996 .read = sisusb_read,
2997 .write = sisusb_write,
2998 .llseek = sisusb_lseek,
2999#ifdef CONFIG_COMPAT
3000 .compat_ioctl = sisusb_compat_ioctl,
3001#endif
3002 .unlocked_ioctl = sisusb_ioctl
3003};
3004
3005static struct usb_class_driver usb_sisusb_class = {
3006 .name = "sisusbvga%d",
3007 .fops = &usb_sisusb_fops,
3008 .minor_base = SISUSB_MINOR
3009};
3010
3011static int sisusb_probe(struct usb_interface *intf,
3012 const struct usb_device_id *id)
3013{
3014 struct usb_device *dev = interface_to_usbdev(intf);
3015 struct sisusb_usb_data *sisusb;
3016 int retval = 0, i;
3017
3018 dev_info(&dev->dev, "USB2VGA dongle found at address %d\n",
3019 dev->devnum);
3020
3021 /* Allocate memory for our private */
3022 sisusb = kzalloc(sizeof(*sisusb), GFP_KERNEL);
3023 if (!sisusb)
3024 return -ENOMEM;
3025
3026 kref_init(&sisusb->kref);
3027
3028 mutex_init(&(sisusb->lock));
3029
3030 sisusb->sisusb_dev = dev;
3031 sisusb->vrambase = SISUSB_PCI_MEMBASE;
3032 sisusb->mmiobase = SISUSB_PCI_MMIOBASE;
3033 sisusb->mmiosize = SISUSB_PCI_MMIOSIZE;
3034 sisusb->ioportbase = SISUSB_PCI_IOPORTBASE;
3035 /* Everything else is zero */
3036
3037 /* Register device */
3038 retval = usb_register_dev(intf, &usb_sisusb_class);
3039 if (retval) {
3040 dev_err(&sisusb->sisusb_dev->dev,
3041 "Failed to get a minor for device %d\n",
3042 dev->devnum);
3043 retval = -ENODEV;
3044 goto error_1;
3045 }
3046
3047 sisusb->minor = intf->minor;
3048
3049 /* Allocate buffers */
3050 sisusb->ibufsize = SISUSB_IBUF_SIZE;
3051 sisusb->ibuf = kmalloc(SISUSB_IBUF_SIZE, GFP_KERNEL);
3052 if (!sisusb->ibuf) {
3053 retval = -ENOMEM;
3054 goto error_2;
3055 }
3056
3057 sisusb->numobufs = 0;
3058 sisusb->obufsize = SISUSB_OBUF_SIZE;
3059 for (i = 0; i < NUMOBUFS; i++) {
3060 sisusb->obuf[i] = kmalloc(SISUSB_OBUF_SIZE, GFP_KERNEL);
3061 if (!sisusb->obuf[i]) {
3062 if (i == 0) {
3063 retval = -ENOMEM;
3064 goto error_3;
3065 }
3066 break;
3067 }
3068 sisusb->numobufs++;
3069 }
3070
3071 /* Allocate URBs */
3072 sisusb->sisurbin = usb_alloc_urb(0, GFP_KERNEL);
3073 if (!sisusb->sisurbin) {
3074 retval = -ENOMEM;
3075 goto error_3;
3076 }
3077 sisusb->completein = 1;
3078
3079 for (i = 0; i < sisusb->numobufs; i++) {
3080 sisusb->sisurbout[i] = usb_alloc_urb(0, GFP_KERNEL);
3081 if (!sisusb->sisurbout[i]) {
3082 retval = -ENOMEM;
3083 goto error_4;
3084 }
3085 sisusb->urbout_context[i].sisusb = (void *)sisusb;
3086 sisusb->urbout_context[i].urbindex = i;
3087 sisusb->urbstatus[i] = 0;
3088 }
3089
3090 dev_info(&sisusb->sisusb_dev->dev, "Allocated %d output buffers\n",
3091 sisusb->numobufs);
3092
3093#ifdef CONFIG_USB_SISUSBVGA_CON
3094 /* Allocate our SiS_Pr */
3095 sisusb->SiS_Pr = kmalloc(sizeof(struct SiS_Private), GFP_KERNEL);
3096 if (!sisusb->SiS_Pr) {
3097 retval = -ENOMEM;
3098 goto error_4;
3099 }
3100#endif
3101
3102 /* Do remaining init stuff */
3103
3104 init_waitqueue_head(&sisusb->wait_q);
3105
3106 usb_set_intfdata(intf, sisusb);
3107
3108 usb_get_dev(sisusb->sisusb_dev);
3109
3110 sisusb->present = 1;
3111
3112 if (dev->speed == USB_SPEED_HIGH || dev->speed >= USB_SPEED_SUPER) {
3113 int initscreen = 1;
3114#ifdef CONFIG_USB_SISUSBVGA_CON
3115 if (sisusb_first_vc > 0 && sisusb_last_vc > 0 &&
3116 sisusb_first_vc <= sisusb_last_vc &&
3117 sisusb_last_vc <= MAX_NR_CONSOLES)
3118 initscreen = 0;
3119#endif
3120 if (sisusb_init_gfxdevice(sisusb, initscreen))
3121 dev_err(&sisusb->sisusb_dev->dev,
3122 "Failed to early initialize device\n");
3123
3124 } else
3125 dev_info(&sisusb->sisusb_dev->dev,
3126 "Not attached to USB 2.0 hub, deferring init\n");
3127
3128 sisusb->ready = 1;
3129
3130#ifdef SISUSBENDIANTEST
3131 dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST ***\n");
3132 sisusb_testreadwrite(sisusb);
3133 dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST END ***\n");
3134#endif
3135
3136#ifdef CONFIG_USB_SISUSBVGA_CON
3137 sisusb_console_init(sisusb, sisusb_first_vc, sisusb_last_vc);
3138#endif
3139
3140 return 0;
3141
3142error_4:
3143 sisusb_free_urbs(sisusb);
3144error_3:
3145 sisusb_free_buffers(sisusb);
3146error_2:
3147 usb_deregister_dev(intf, &usb_sisusb_class);
3148error_1:
3149 kfree(sisusb);
3150 return retval;
3151}
3152
3153static void sisusb_disconnect(struct usb_interface *intf)
3154{
3155 struct sisusb_usb_data *sisusb;
3156
3157 /* This should *not* happen */
3158 sisusb = usb_get_intfdata(intf);
3159 if (!sisusb)
3160 return;
3161
3162#ifdef CONFIG_USB_SISUSBVGA_CON
3163 sisusb_console_exit(sisusb);
3164#endif
3165
3166 usb_deregister_dev(intf, &usb_sisusb_class);
3167
3168 mutex_lock(&sisusb->lock);
3169
3170 /* Wait for all URBs to complete and kill them in case (MUST do) */
3171 if (!sisusb_wait_all_out_complete(sisusb))
3172 sisusb_kill_all_busy(sisusb);
3173
3174 usb_set_intfdata(intf, NULL);
3175
3176 sisusb->present = 0;
3177 sisusb->ready = 0;
3178
3179 mutex_unlock(&sisusb->lock);
3180
3181 /* decrement our usage count */
3182 kref_put(&sisusb->kref, sisusb_delete);
3183}
3184
3185static const struct usb_device_id sisusb_table[] = {
3186 { USB_DEVICE(0x0711, 0x0550) },
3187 { USB_DEVICE(0x0711, 0x0900) },
3188 { USB_DEVICE(0x0711, 0x0901) },
3189 { USB_DEVICE(0x0711, 0x0902) },
3190 { USB_DEVICE(0x0711, 0x0903) },
3191 { USB_DEVICE(0x0711, 0x0918) },
3192 { USB_DEVICE(0x0711, 0x0920) },
3193 { USB_DEVICE(0x0711, 0x0950) },
3194 { USB_DEVICE(0x0711, 0x5200) },
3195 { USB_DEVICE(0x182d, 0x021c) },
3196 { USB_DEVICE(0x182d, 0x0269) },
3197 { }
3198};
3199
3200MODULE_DEVICE_TABLE(usb, sisusb_table);
3201
3202static struct usb_driver sisusb_driver = {
3203 .name = "sisusb",
3204 .probe = sisusb_probe,
3205 .disconnect = sisusb_disconnect,
3206 .id_table = sisusb_table,
3207};
3208
3209static int __init usb_sisusb_init(void)
3210{
3211
3212#ifdef CONFIG_USB_SISUSBVGA_CON
3213 sisusb_init_concode();
3214#endif
3215
3216 return usb_register(&sisusb_driver);
3217}
3218
3219static void __exit usb_sisusb_exit(void)
3220{
3221 usb_deregister(&sisusb_driver);
3222}
3223
3224module_init(usb_sisusb_init);
3225module_exit(usb_sisusb_exit);
3226
3227MODULE_AUTHOR("Thomas Winischhofer <thomas@winischhofer.net>");
3228MODULE_DESCRIPTION("sisusbvga - Driver for Net2280/SiS315-based USB2VGA dongles");
3229MODULE_LICENSE("GPL");
3230