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mm: use kcalloc() instead of kzalloc() to allocate array
[linux/fpc-iii.git] / drivers / usb / misc / sisusbvga / sisusb.c
blobdd573abd2d1edf9b32b0a97aa9def3d1abd9d967
1 /*
2 * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles
3 *
4 * Main part
5 *
6 * Copyright (C) 2005 by Thomas Winischhofer, Vienna, Austria
7 *
8 * If distributed as part of the Linux kernel, this code is licensed under the
9 * terms of the GPL v2.
10 *
11 * Otherwise, the following license terms apply:
12 *
13 * * Redistribution and use in source and binary forms, with or without
14 * * modification, are permitted provided that the following conditions
15 * * are met:
16 * * 1) Redistributions of source code must retain the above copyright
17 * * notice, this list of conditions and the following disclaimer.
18 * * 2) Redistributions in binary form must reproduce the above copyright
19 * * notice, this list of conditions and the following disclaimer in the
20 * * documentation and/or other materials provided with the distribution.
21 * * 3) The name of the author may not be used to endorse or promote products
22 * * derived from this software without specific psisusbr written permission.
23 * *
24 * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESSED OR
25 * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26 * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29 * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33 * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 * Author: Thomas Winischhofer <thomas@winischhofer.net>
36 *
37 */
38
39 #include <linux/mutex.h>
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/signal.h>
43 #include <linux/errno.h>
44 #include <linux/poll.h>
45 #include <linux/init.h>
46 #include <linux/slab.h>
47 #include <linux/spinlock.h>
48 #include <linux/kref.h>
49 #include <linux/usb.h>
50 #include <linux/vmalloc.h>
51
52 #include "sisusb.h"
53 #include "sisusb_init.h"
54
55 #ifdef INCL_SISUSB_CON
56 #include <linux/font.h>
57 #endif
58
59 #define SISUSB_DONTSYNC
60
61 /* Forward declarations / clean-up routines */
62
63 #ifdef INCL_SISUSB_CON
64 static int sisusb_first_vc = 0;
65 static int sisusb_last_vc = 0;
66 module_param_named(first, sisusb_first_vc, int, 0);
67 module_param_named(last, sisusb_last_vc, int, 0);
68 MODULE_PARM_DESC(first, "Number of first console to take over (1 - MAX_NR_CONSOLES)");
69 MODULE_PARM_DESC(last, "Number of last console to take over (1 - MAX_NR_CONSOLES)");
70 #endif
71
72 static struct usb_driver sisusb_driver;
73
74 static void
75 sisusb_free_buffers(struct sisusb_usb_data *sisusb)
76 {
77 int i;
78
79 for (i = 0; i < NUMOBUFS; i++) {
80 if (sisusb->obuf[i]) {
81 kfree(sisusb->obuf[i]);
82 sisusb->obuf[i] = NULL;
83 }
84 }
85 if (sisusb->ibuf) {
86 kfree(sisusb->ibuf);
87 sisusb->ibuf = NULL;
88 }
89 }
90
91 static void
92 sisusb_free_urbs(struct sisusb_usb_data *sisusb)
93 {
94 int i;
95
96 for (i = 0; i < NUMOBUFS; i++) {
97 usb_free_urb(sisusb->sisurbout[i]);
98 sisusb->sisurbout[i] = NULL;
99 }
100 usb_free_urb(sisusb->sisurbin);
101 sisusb->sisurbin = NULL;
102 }
103
104 /* Level 0: USB transport layer */
105
106 /* 1. out-bulks */
107
108 /* out-urb management */
109
110 /* Return 1 if all free, 0 otherwise */
111 static int
112 sisusb_all_free(struct sisusb_usb_data *sisusb)
113 {
114 int i;
115
116 for (i = 0; i < sisusb->numobufs; i++) {
117
118 if (sisusb->urbstatus[i] & SU_URB_BUSY)
119 return 0;
120
121 }
122
123 return 1;
124 }
125
126 /* Kill all busy URBs */
127 static void
128 sisusb_kill_all_busy(struct sisusb_usb_data *sisusb)
129 {
130 int i;
131
132 if (sisusb_all_free(sisusb))
133 return;
134
135 for (i = 0; i < sisusb->numobufs; i++) {
136
137 if (sisusb->urbstatus[i] & SU_URB_BUSY)
138 usb_kill_urb(sisusb->sisurbout[i]);
139
140 }
141 }
142
143 /* Return 1 if ok, 0 if error (not all complete within timeout) */
144 static int
145 sisusb_wait_all_out_complete(struct sisusb_usb_data *sisusb)
146 {
147 int timeout = 5 * HZ, i = 1;
148
149 wait_event_timeout(sisusb->wait_q,
150 (i = sisusb_all_free(sisusb)),
151 timeout);
152
153 return i;
154 }
155
156 static int
157 sisusb_outurb_available(struct sisusb_usb_data *sisusb)
158 {
159 int i;
160
161 for (i = 0; i < sisusb->numobufs; i++) {
162
163 if ((sisusb->urbstatus[i] & (SU_URB_BUSY|SU_URB_ALLOC)) == 0)
164 return i;
165
166 }
167
168 return -1;
169 }
170
171 static int
172 sisusb_get_free_outbuf(struct sisusb_usb_data *sisusb)
173 {
174 int i, timeout = 5 * HZ;
175
176 wait_event_timeout(sisusb->wait_q,
177 ((i = sisusb_outurb_available(sisusb)) >= 0),
178 timeout);
179
180 return i;
181 }
182
183 static int
184 sisusb_alloc_outbuf(struct sisusb_usb_data *sisusb)
185 {
186 int i;
187
188 i = sisusb_outurb_available(sisusb);
189
190 if (i >= 0)
191 sisusb->urbstatus[i] |= SU_URB_ALLOC;
192
193 return i;
194 }
195
196 static void
197 sisusb_free_outbuf(struct sisusb_usb_data *sisusb, int index)
198 {
199 if ((index >= 0) && (index < sisusb->numobufs))
200 sisusb->urbstatus[index] &= ~SU_URB_ALLOC;
201 }
202
203 /* completion callback */
204
205 static void
206 sisusb_bulk_completeout(struct urb *urb)
207 {
208 struct sisusb_urb_context *context = urb->context;
209 struct sisusb_usb_data *sisusb;
210
211 if (!context)
212 return;
213
214 sisusb = context->sisusb;
215
216 if (!sisusb || !sisusb->sisusb_dev || !sisusb->present)
217 return;
218
219 #ifndef SISUSB_DONTSYNC
220 if (context->actual_length)
221 *(context->actual_length) += urb->actual_length;
222 #endif
223
224 sisusb->urbstatus[context->urbindex] &= ~SU_URB_BUSY;
225 wake_up(&sisusb->wait_q);
226 }
227
228 static int
229 sisusb_bulkout_msg(struct sisusb_usb_data *sisusb, int index, unsigned int pipe, void *data,
230 int len, int *actual_length, int timeout, unsigned int tflags)
231 {
232 struct urb *urb = sisusb->sisurbout[index];
233 int retval, byteswritten = 0;
234
235 /* Set up URB */
236 urb->transfer_flags = 0;
237
238 usb_fill_bulk_urb(urb, sisusb->sisusb_dev, pipe, data, len,
239 sisusb_bulk_completeout, &sisusb->urbout_context[index]);
240
241 urb->transfer_flags |= tflags;
242 urb->actual_length = 0;
243
244 /* Set up context */
245 sisusb->urbout_context[index].actual_length = (timeout) ?
246 NULL : actual_length;
247
248 /* Declare this urb/buffer in use */
249 sisusb->urbstatus[index] |= SU_URB_BUSY;
250
251 /* Submit URB */
252 retval = usb_submit_urb(urb, GFP_KERNEL);
253
254 /* If OK, and if timeout > 0, wait for completion */
255 if ((retval == 0) && timeout) {
256 wait_event_timeout(sisusb->wait_q,
257 (!(sisusb->urbstatus[index] & SU_URB_BUSY)),
258 timeout);
259 if (sisusb->urbstatus[index] & SU_URB_BUSY) {
260 /* URB timed out... kill it and report error */
261 usb_kill_urb(urb);
262 retval = -ETIMEDOUT;
263 } else {
264 /* Otherwise, report urb status */
265 retval = urb->status;
266 byteswritten = urb->actual_length;
267 }
268 }
269
270 if (actual_length)
271 *actual_length = byteswritten;
272
273 return retval;
274 }
275
276 /* 2. in-bulks */
277
278 /* completion callback */
279
280 static void
281 sisusb_bulk_completein(struct urb *urb)
282 {
283 struct sisusb_usb_data *sisusb = urb->context;
284
285 if (!sisusb || !sisusb->sisusb_dev || !sisusb->present)
286 return;
287
288 sisusb->completein = 1;
289 wake_up(&sisusb->wait_q);
290 }
291
292 static int
293 sisusb_bulkin_msg(struct sisusb_usb_data *sisusb, unsigned int pipe, void *data,
294 int len, int *actual_length, int timeout, unsigned int tflags)
295 {
296 struct urb *urb = sisusb->sisurbin;
297 int retval, readbytes = 0;
298
299 urb->transfer_flags = 0;
300
301 usb_fill_bulk_urb(urb, sisusb->sisusb_dev, pipe, data, len,
302 sisusb_bulk_completein, sisusb);
303
304 urb->transfer_flags |= tflags;
305 urb->actual_length = 0;
306
307 sisusb->completein = 0;
308 retval = usb_submit_urb(urb, GFP_KERNEL);
309 if (retval == 0) {
310 wait_event_timeout(sisusb->wait_q, sisusb->completein, timeout);
311 if (!sisusb->completein) {
312 /* URB timed out... kill it and report error */
313 usb_kill_urb(urb);
314 retval = -ETIMEDOUT;
315 } else {
316 /* URB completed within timeout */
317 retval = urb->status;
318 readbytes = urb->actual_length;
319 }
320 }
321
322 if (actual_length)
323 *actual_length = readbytes;
324
325 return retval;
326 }
327
328
329 /* Level 1: */
330
331 /* Send a bulk message of variable size
332 *
333 * To copy the data from userspace, give pointer to "userbuffer",
334 * to copy from (non-DMA) kernel memory, give "kernbuffer". If
335 * both of these are NULL, it is assumed, that the transfer
336 * buffer "sisusb->obuf[index]" is set up with the data to send.
337 * Index is ignored if either kernbuffer or userbuffer is set.
338 * If async is nonzero, URBs will be sent without waiting for
339 * completion of the previous URB.
340 *
341 * (return 0 on success)
342 */
343
344 static int sisusb_send_bulk_msg(struct sisusb_usb_data *sisusb, int ep, int len,
345 char *kernbuffer, const char __user *userbuffer, int index,
346 ssize_t *bytes_written, unsigned int tflags, int async)
347 {
348 int result = 0, retry, count = len;
349 int passsize, thispass, transferred_len = 0;
350 int fromuser = (userbuffer != NULL) ? 1 : 0;
351 int fromkern = (kernbuffer != NULL) ? 1 : 0;
352 unsigned int pipe;
353 char *buffer;
354
355 (*bytes_written) = 0;
356
357 /* Sanity check */
358 if (!sisusb || !sisusb->present || !sisusb->sisusb_dev)
359 return -ENODEV;
360
361 /* If we copy data from kernel or userspace, force the
362 * allocation of a buffer/urb. If we have the data in
363 * the transfer buffer[index] already, reuse the buffer/URB
364 * if the length is > buffer size. (So, transmitting
365 * large data amounts directly from the transfer buffer
366 * treats the buffer as a ring buffer. However, we need
367 * to sync in this case.)
368 */
369 if (fromuser || fromkern)
370 index = -1;
371 else if (len > sisusb->obufsize)
372 async = 0;
373
374 pipe = usb_sndbulkpipe(sisusb->sisusb_dev, ep);
375
376 do {
377 passsize = thispass = (sisusb->obufsize < count) ?
378 sisusb->obufsize : count;
379
380 if (index < 0)
381 index = sisusb_get_free_outbuf(sisusb);
382
383 if (index < 0)
384 return -EIO;
385
386 buffer = sisusb->obuf[index];
387
388 if (fromuser) {
389
390 if (copy_from_user(buffer, userbuffer, passsize))
391 return -EFAULT;
392
393 userbuffer += passsize;
394
395 } else if (fromkern) {
396
397 memcpy(buffer, kernbuffer, passsize);
398 kernbuffer += passsize;
399
400 }
401
402 retry = 5;
403 while (thispass) {
404
405 if (!sisusb->sisusb_dev)
406 return -ENODEV;
407
408 result = sisusb_bulkout_msg(sisusb,
409 index,
410 pipe,
411 buffer,
412 thispass,
413 &transferred_len,
414 async ? 0 : 5 * HZ,
415 tflags);
416
417 if (result == -ETIMEDOUT) {
418
419 /* Will not happen if async */
420 if (!retry--)
421 return -ETIME;
422
423 continue;
424 }
425
426 if ((result == 0) && !async && transferred_len) {
427
428 thispass -= transferred_len;
429 buffer += transferred_len;
430
431 } else
432 break;
433 }
434
435 if (result)
436 return result;
437
438 (*bytes_written) += passsize;
439 count -= passsize;
440
441 /* Force new allocation in next iteration */
442 if (fromuser || fromkern)
443 index = -1;
444
445 } while (count > 0);
446
447 if (async) {
448 #ifdef SISUSB_DONTSYNC
449 (*bytes_written) = len;
450 /* Some URBs/buffers might be busy */
451 #else
452 sisusb_wait_all_out_complete(sisusb);
453 (*bytes_written) = transferred_len;
454 /* All URBs and all buffers are available */
455 #endif
456 }
457
458 return ((*bytes_written) == len) ? 0 : -EIO;
459 }
460
461 /* Receive a bulk message of variable size
462 *
463 * To copy the data to userspace, give pointer to "userbuffer",
464 * to copy to kernel memory, give "kernbuffer". One of them
465 * MUST be set. (There is no technique for letting the caller
466 * read directly from the ibuf.)
467 *
468 */
469
470 static int sisusb_recv_bulk_msg(struct sisusb_usb_data *sisusb, int ep, int len,
471 void *kernbuffer, char __user *userbuffer, ssize_t *bytes_read,
472 unsigned int tflags)
473 {
474 int result = 0, retry, count = len;
475 int bufsize, thispass, transferred_len;
476 unsigned int pipe;
477 char *buffer;
478
479 (*bytes_read) = 0;
480
481 /* Sanity check */
482 if (!sisusb || !sisusb->present || !sisusb->sisusb_dev)
483 return -ENODEV;
484
485 pipe = usb_rcvbulkpipe(sisusb->sisusb_dev, ep);
486 buffer = sisusb->ibuf;
487 bufsize = sisusb->ibufsize;
488
489 retry = 5;
490
491 #ifdef SISUSB_DONTSYNC
492 if (!(sisusb_wait_all_out_complete(sisusb)))
493 return -EIO;
494 #endif
495
496 while (count > 0) {
497
498 if (!sisusb->sisusb_dev)
499 return -ENODEV;
500
501 thispass = (bufsize < count) ? bufsize : count;
502
503 result = sisusb_bulkin_msg(sisusb,
504 pipe,
505 buffer,
506 thispass,
507 &transferred_len,
508 5 * HZ,
509 tflags);
510
511 if (transferred_len)
512 thispass = transferred_len;
513
514 else if (result == -ETIMEDOUT) {
515
516 if (!retry--)
517 return -ETIME;
518
519 continue;
520
521 } else
522 return -EIO;
523
524
525 if (thispass) {
526
527 (*bytes_read) += thispass;
528 count -= thispass;
529
530 if (userbuffer) {
531
532 if (copy_to_user(userbuffer, buffer, thispass))
533 return -EFAULT;
534
535 userbuffer += thispass;
536
537 } else {
538
539 memcpy(kernbuffer, buffer, thispass);
540 kernbuffer += thispass;
541
542 }
543
544 }
545
546 }
547
548 return ((*bytes_read) == len) ? 0 : -EIO;
549 }
550
551 static int sisusb_send_packet(struct sisusb_usb_data *sisusb, int len,
552 struct sisusb_packet *packet)
553 {
554 int ret;
555 ssize_t bytes_transferred = 0;
556 __le32 tmp;
557
558 if (len == 6)
559 packet->data = 0;
560
561 #ifdef SISUSB_DONTSYNC
562 if (!(sisusb_wait_all_out_complete(sisusb)))
563 return 1;
564 #endif
565
566 /* Eventually correct endianness */
567 SISUSB_CORRECT_ENDIANNESS_PACKET(packet);
568
569 /* 1. send the packet */
570 ret = sisusb_send_bulk_msg(sisusb, SISUSB_EP_GFX_OUT, len,
571 (char *)packet, NULL, 0, &bytes_transferred, 0, 0);
572
573 if ((ret == 0) && (len == 6)) {
574
575 /* 2. if packet len == 6, it means we read, so wait for 32bit
576 * return value and write it to packet->data
577 */
578 ret = sisusb_recv_bulk_msg(sisusb, SISUSB_EP_GFX_IN, 4,
579 (char *)&tmp, NULL, &bytes_transferred, 0);
580
581 packet->data = le32_to_cpu(tmp);
582 }
583
584 return ret;
585 }
586
587 static int sisusb_send_bridge_packet(struct sisusb_usb_data *sisusb, int len,
588 struct sisusb_packet *packet,
589 unsigned int tflags)
590 {
591 int ret;
592 ssize_t bytes_transferred = 0;
593 __le32 tmp;
594
595 if (len == 6)
596 packet->data = 0;
597
598 #ifdef SISUSB_DONTSYNC
599 if (!(sisusb_wait_all_out_complete(sisusb)))
600 return 1;
601 #endif
602
603 /* Eventually correct endianness */
604 SISUSB_CORRECT_ENDIANNESS_PACKET(packet);
605
606 /* 1. send the packet */
607 ret = sisusb_send_bulk_msg(sisusb, SISUSB_EP_BRIDGE_OUT, len,
608 (char *)packet, NULL, 0, &bytes_transferred, tflags, 0);
609
610 if ((ret == 0) && (len == 6)) {
611
612 /* 2. if packet len == 6, it means we read, so wait for 32bit
613 * return value and write it to packet->data
614 */
615 ret = sisusb_recv_bulk_msg(sisusb, SISUSB_EP_BRIDGE_IN, 4,
616 (char *)&tmp, NULL, &bytes_transferred, 0);
617
618 packet->data = le32_to_cpu(tmp);
619 }
620
621 return ret;
622 }
623
624 /* access video memory and mmio (return 0 on success) */
625
626 /* Low level */
627
628 /* The following routines assume being used to transfer byte, word,
629 * long etc.
630 * This means that
631 * - the write routines expect "data" in machine endianness format.
632 * The data will be converted to leXX in sisusb_xxx_packet.
633 * - the read routines can expect read data in machine-endianess.
634 */
635
636 static int sisusb_write_memio_byte(struct sisusb_usb_data *sisusb, int type,
637 u32 addr, u8 data)
638 {
639 struct sisusb_packet packet;
640 int ret;
641
642 packet.header = (1 << (addr & 3)) | (type << 6);
643 packet.address = addr & ~3;
644 packet.data = data << ((addr & 3) << 3);
645 ret = sisusb_send_packet(sisusb, 10, &packet);
646 return ret;
647 }
648
649 static int sisusb_write_memio_word(struct sisusb_usb_data *sisusb, int type,
650 u32 addr, u16 data)
651 {
652 struct sisusb_packet packet;
653 int ret = 0;
654
655 packet.address = addr & ~3;
656
657 switch (addr & 3) {
658 case 0:
659 packet.header = (type << 6) | 0x0003;
660 packet.data = (u32)data;
661 ret = sisusb_send_packet(sisusb, 10, &packet);
662 break;
663 case 1:
664 packet.header = (type << 6) | 0x0006;
665 packet.data = (u32)data << 8;
666 ret = sisusb_send_packet(sisusb, 10, &packet);
667 break;
668 case 2:
669 packet.header = (type << 6) | 0x000c;
670 packet.data = (u32)data << 16;
671 ret = sisusb_send_packet(sisusb, 10, &packet);
672 break;
673 case 3:
674 packet.header = (type << 6) | 0x0008;
675 packet.data = (u32)data << 24;
676 ret = sisusb_send_packet(sisusb, 10, &packet);
677 packet.header = (type << 6) | 0x0001;
678 packet.address = (addr & ~3) + 4;
679 packet.data = (u32)data >> 8;
680 ret |= sisusb_send_packet(sisusb, 10, &packet);
681 }
682
683 return ret;
684 }
685
686 static int sisusb_write_memio_24bit(struct sisusb_usb_data *sisusb, int type,
687 u32 addr, u32 data)
688 {
689 struct sisusb_packet packet;
690 int ret = 0;
691
692 packet.address = addr & ~3;
693
694 switch (addr & 3) {
695 case 0:
696 packet.header = (type << 6) | 0x0007;
697 packet.data = data & 0x00ffffff;
698 ret = sisusb_send_packet(sisusb, 10, &packet);
699 break;
700 case 1:
701 packet.header = (type << 6) | 0x000e;
702 packet.data = data << 8;
703 ret = sisusb_send_packet(sisusb, 10, &packet);
704 break;
705 case 2:
706 packet.header = (type << 6) | 0x000c;
707 packet.data = data << 16;
708 ret = sisusb_send_packet(sisusb, 10, &packet);
709 packet.header = (type << 6) | 0x0001;
710 packet.address = (addr & ~3) + 4;
711 packet.data = (data >> 16) & 0x00ff;
712 ret |= sisusb_send_packet(sisusb, 10, &packet);
713 break;
714 case 3:
715 packet.header = (type << 6) | 0x0008;
716 packet.data = data << 24;
717 ret = sisusb_send_packet(sisusb, 10, &packet);
718 packet.header = (type << 6) | 0x0003;
719 packet.address = (addr & ~3) + 4;
720 packet.data = (data >> 8) & 0xffff;
721 ret |= sisusb_send_packet(sisusb, 10, &packet);
722 }
723
724 return ret;
725 }
726
727 static int sisusb_write_memio_long(struct sisusb_usb_data *sisusb, int type,
728 u32 addr, u32 data)
729 {
730 struct sisusb_packet packet;
731 int ret = 0;
732
733 packet.address = addr & ~3;
734
735 switch (addr & 3) {
736 case 0:
737 packet.header = (type << 6) | 0x000f;
738 packet.data = data;
739 ret = sisusb_send_packet(sisusb, 10, &packet);
740 break;
741 case 1:
742 packet.header = (type << 6) | 0x000e;
743 packet.data = data << 8;
744 ret = sisusb_send_packet(sisusb, 10, &packet);
745 packet.header = (type << 6) | 0x0001;
746 packet.address = (addr & ~3) + 4;
747 packet.data = data >> 24;
748 ret |= sisusb_send_packet(sisusb, 10, &packet);
749 break;
750 case 2:
751 packet.header = (type << 6) | 0x000c;
752 packet.data = data << 16;
753 ret = sisusb_send_packet(sisusb, 10, &packet);
754 packet.header = (type << 6) | 0x0003;
755 packet.address = (addr & ~3) + 4;
756 packet.data = data >> 16;
757 ret |= sisusb_send_packet(sisusb, 10, &packet);
758 break;
759 case 3:
760 packet.header = (type << 6) | 0x0008;
761 packet.data = data << 24;
762 ret = sisusb_send_packet(sisusb, 10, &packet);
763 packet.header = (type << 6) | 0x0007;
764 packet.address = (addr & ~3) + 4;
765 packet.data = data >> 8;
766 ret |= sisusb_send_packet(sisusb, 10, &packet);
767 }
768
769 return ret;
770 }
771
772 /* The xxx_bulk routines copy a buffer of variable size. They treat the
773 * buffer as chars, therefore lsb/msb has to be corrected if using the
774 * byte/word/long/etc routines for speed-up
775 *
776 * If data is from userland, set "userbuffer" (and clear "kernbuffer"),
777 * if data is in kernel space, set "kernbuffer" (and clear "userbuffer");
778 * if neither "kernbuffer" nor "userbuffer" are given, it is assumed
779 * that the data already is in the transfer buffer "sisusb->obuf[index]".
780 */
781
782 static int sisusb_write_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
783 char *kernbuffer, int length,
784 const char __user *userbuffer, int index,
785 ssize_t *bytes_written)
786 {
787 struct sisusb_packet packet;
788 int ret = 0;
789 static int msgcount = 0;
790 u8 swap8, fromkern = kernbuffer ? 1 : 0;
791 u16 swap16;
792 u32 swap32, flag = (length >> 28) & 1;
793 char buf[4];
794
795 /* if neither kernbuffer not userbuffer are given, assume
796 * data in obuf
797 */
798 if (!fromkern && !userbuffer)
799 kernbuffer = sisusb->obuf[index];
800
801 (*bytes_written = 0);
802
803 length &= 0x00ffffff;
804
805 while (length) {
806
807 switch (length) {
808
809 case 1:
810 if (userbuffer) {
811 if (get_user(swap8, (u8 __user *)userbuffer))
812 return -EFAULT;
813 } else
814 swap8 = kernbuffer[0];
815
816 ret = sisusb_write_memio_byte(sisusb,
817 SISUSB_TYPE_MEM,
818 addr, swap8);
819
820 if (!ret)
821 (*bytes_written)++;
822
823 return ret;
824
825 case 2:
826 if (userbuffer) {
827 if (get_user(swap16, (u16 __user *)userbuffer))
828 return -EFAULT;
829 } else
830 swap16 = *((u16 *)kernbuffer);
831
832 ret = sisusb_write_memio_word(sisusb,
833 SISUSB_TYPE_MEM,
834 addr,
835 swap16);
836
837 if (!ret)
838 (*bytes_written) += 2;
839
840 return ret;
841
842 case 3:
843 if (userbuffer) {
844 if (copy_from_user(&buf, userbuffer, 3))
845 return -EFAULT;
846 #ifdef __BIG_ENDIAN
847 swap32 = (buf[0] << 16) |
848 (buf[1] << 8) |
849 buf[2];
850 #else
851 swap32 = (buf[2] << 16) |
852 (buf[1] << 8) |
853 buf[0];
854 #endif
855 } else
856 #ifdef __BIG_ENDIAN
857 swap32 = (kernbuffer[0] << 16) |
858 (kernbuffer[1] << 8) |
859 kernbuffer[2];
860 #else
861 swap32 = (kernbuffer[2] << 16) |
862 (kernbuffer[1] << 8) |
863 kernbuffer[0];
864 #endif
865
866 ret = sisusb_write_memio_24bit(sisusb,
867 SISUSB_TYPE_MEM,
868 addr,
869 swap32);
870
871 if (!ret)
872 (*bytes_written) += 3;
873
874 return ret;
875
876 case 4:
877 if (userbuffer) {
878 if (get_user(swap32, (u32 __user *)userbuffer))
879 return -EFAULT;
880 } else
881 swap32 = *((u32 *)kernbuffer);
882
883 ret = sisusb_write_memio_long(sisusb,
884 SISUSB_TYPE_MEM,
885 addr,
886 swap32);
887 if (!ret)
888 (*bytes_written) += 4;
889
890 return ret;
891
892 default:
893 if ((length & ~3) > 0x10000) {
894
895 packet.header = 0x001f;
896 packet.address = 0x000001d4;
897 packet.data = addr;
898 ret = sisusb_send_bridge_packet(sisusb, 10,
899 &packet, 0);
900 packet.header = 0x001f;
901 packet.address = 0x000001d0;
902 packet.data = (length & ~3);
903 ret |= sisusb_send_bridge_packet(sisusb, 10,
904 &packet, 0);
905 packet.header = 0x001f;
906 packet.address = 0x000001c0;
907 packet.data = flag | 0x16;
908 ret |= sisusb_send_bridge_packet(sisusb, 10,
909 &packet, 0);
910 if (userbuffer) {
911 ret |= sisusb_send_bulk_msg(sisusb,
912 SISUSB_EP_GFX_LBULK_OUT,
913 (length & ~3),
914 NULL, userbuffer, 0,
915 bytes_written, 0, 1);
916 userbuffer += (*bytes_written);
917 } else if (fromkern) {
918 ret |= sisusb_send_bulk_msg(sisusb,
919 SISUSB_EP_GFX_LBULK_OUT,
920 (length & ~3),
921 kernbuffer, NULL, 0,
922 bytes_written, 0, 1);
923 kernbuffer += (*bytes_written);
924 } else {
925 ret |= sisusb_send_bulk_msg(sisusb,
926 SISUSB_EP_GFX_LBULK_OUT,
927 (length & ~3),
928 NULL, NULL, index,
929 bytes_written, 0, 1);
930 kernbuffer += ((*bytes_written) &
931 (sisusb->obufsize-1));
932 }
933
934 } else {
935
936 packet.header = 0x001f;
937 packet.address = 0x00000194;
938 packet.data = addr;
939 ret = sisusb_send_bridge_packet(sisusb, 10,
940 &packet, 0);
941 packet.header = 0x001f;
942 packet.address = 0x00000190;
943 packet.data = (length & ~3);
944 ret |= sisusb_send_bridge_packet(sisusb, 10,
945 &packet, 0);
946 if (sisusb->flagb0 != 0x16) {
947 packet.header = 0x001f;
948 packet.address = 0x00000180;
949 packet.data = flag | 0x16;
950 ret |= sisusb_send_bridge_packet(sisusb, 10,
951 &packet, 0);
952 sisusb->flagb0 = 0x16;
953 }
954 if (userbuffer) {
955 ret |= sisusb_send_bulk_msg(sisusb,
956 SISUSB_EP_GFX_BULK_OUT,
957 (length & ~3),
958 NULL, userbuffer, 0,
959 bytes_written, 0, 1);
960 userbuffer += (*bytes_written);
961 } else if (fromkern) {
962 ret |= sisusb_send_bulk_msg(sisusb,
963 SISUSB_EP_GFX_BULK_OUT,
964 (length & ~3),
965 kernbuffer, NULL, 0,
966 bytes_written, 0, 1);
967 kernbuffer += (*bytes_written);
968 } else {
969 ret |= sisusb_send_bulk_msg(sisusb,
970 SISUSB_EP_GFX_BULK_OUT,
971 (length & ~3),
972 NULL, NULL, index,
973 bytes_written, 0, 1);
974 kernbuffer += ((*bytes_written) &
975 (sisusb->obufsize-1));
976 }
977 }
978 if (ret) {
979 msgcount++;
980 if (msgcount < 500)
981 dev_err(&sisusb->sisusb_dev->dev, "Wrote %zd of %d bytes, error %d\n",
982 *bytes_written, length, ret);
983 else if (msgcount == 500)
984 dev_err(&sisusb->sisusb_dev->dev, "Too many errors, logging stopped\n");
985 }
986 addr += (*bytes_written);
987 length -= (*bytes_written);
988 }
989
990 if (ret)
991 break;
992
993 }
994
995 return ret ? -EIO : 0;
996 }
997
998 /* Remember: Read data in packet is in machine-endianess! So for
999 * byte, word, 24bit, long no endian correction is necessary.
1000 */
1001
1002 static int sisusb_read_memio_byte(struct sisusb_usb_data *sisusb, int type,
1003 u32 addr, u8 *data)
1004 {
1005 struct sisusb_packet packet;
1006 int ret;
1007
1008 CLEARPACKET(&packet);
1009 packet.header = (1 << (addr & 3)) | (type << 6);
1010 packet.address = addr & ~3;
1011 ret = sisusb_send_packet(sisusb, 6, &packet);
1012 *data = (u8)(packet.data >> ((addr & 3) << 3));
1013 return ret;
1014 }
1015
1016 static int sisusb_read_memio_word(struct sisusb_usb_data *sisusb, int type,
1017 u32 addr, u16 *data)
1018 {
1019 struct sisusb_packet packet;
1020 int ret = 0;
1021
1022 CLEARPACKET(&packet);
1023
1024 packet.address = addr & ~3;
1025
1026 switch (addr & 3) {
1027 case 0:
1028 packet.header = (type << 6) | 0x0003;
1029 ret = sisusb_send_packet(sisusb, 6, &packet);
1030 *data = (u16)(packet.data);
1031 break;
1032 case 1:
1033 packet.header = (type << 6) | 0x0006;
1034 ret = sisusb_send_packet(sisusb, 6, &packet);
1035 *data = (u16)(packet.data >> 8);
1036 break;
1037 case 2:
1038 packet.header = (type << 6) | 0x000c;
1039 ret = sisusb_send_packet(sisusb, 6, &packet);
1040 *data = (u16)(packet.data >> 16);
1041 break;
1042 case 3:
1043 packet.header = (type << 6) | 0x0008;
1044 ret = sisusb_send_packet(sisusb, 6, &packet);
1045 *data = (u16)(packet.data >> 24);
1046 packet.header = (type << 6) | 0x0001;
1047 packet.address = (addr & ~3) + 4;
1048 ret |= sisusb_send_packet(sisusb, 6, &packet);
1049 *data |= (u16)(packet.data << 8);
1050 }
1051
1052 return ret;
1053 }
1054
1055 static int sisusb_read_memio_24bit(struct sisusb_usb_data *sisusb, int type,
1056 u32 addr, u32 *data)
1057 {
1058 struct sisusb_packet packet;
1059 int ret = 0;
1060
1061 packet.address = addr & ~3;
1062
1063 switch (addr & 3) {
1064 case 0:
1065 packet.header = (type << 6) | 0x0007;
1066 ret = sisusb_send_packet(sisusb, 6, &packet);
1067 *data = packet.data & 0x00ffffff;
1068 break;
1069 case 1:
1070 packet.header = (type << 6) | 0x000e;
1071 ret = sisusb_send_packet(sisusb, 6, &packet);
1072 *data = packet.data >> 8;
1073 break;
1074 case 2:
1075 packet.header = (type << 6) | 0x000c;
1076 ret = sisusb_send_packet(sisusb, 6, &packet);
1077 *data = packet.data >> 16;
1078 packet.header = (type << 6) | 0x0001;
1079 packet.address = (addr & ~3) + 4;
1080 ret |= sisusb_send_packet(sisusb, 6, &packet);
1081 *data |= ((packet.data & 0xff) << 16);
1082 break;
1083 case 3:
1084 packet.header = (type << 6) | 0x0008;
1085 ret = sisusb_send_packet(sisusb, 6, &packet);
1086 *data = packet.data >> 24;
1087 packet.header = (type << 6) | 0x0003;
1088 packet.address = (addr & ~3) + 4;
1089 ret |= sisusb_send_packet(sisusb, 6, &packet);
1090 *data |= ((packet.data & 0xffff) << 8);
1091 }
1092
1093 return ret;
1094 }
1095
1096 static int sisusb_read_memio_long(struct sisusb_usb_data *sisusb, int type,
1097 u32 addr, u32 *data)
1098 {
1099 struct sisusb_packet packet;
1100 int ret = 0;
1101
1102 packet.address = addr & ~3;
1103
1104 switch (addr & 3) {
1105 case 0:
1106 packet.header = (type << 6) | 0x000f;
1107 ret = sisusb_send_packet(sisusb, 6, &packet);
1108 *data = packet.data;
1109 break;
1110 case 1:
1111 packet.header = (type << 6) | 0x000e;
1112 ret = sisusb_send_packet(sisusb, 6, &packet);
1113 *data = packet.data >> 8;
1114 packet.header = (type << 6) | 0x0001;
1115 packet.address = (addr & ~3) + 4;
1116 ret |= sisusb_send_packet(sisusb, 6, &packet);
1117 *data |= (packet.data << 24);
1118 break;
1119 case 2:
1120 packet.header = (type << 6) | 0x000c;
1121 ret = sisusb_send_packet(sisusb, 6, &packet);
1122 *data = packet.data >> 16;
1123 packet.header = (type << 6) | 0x0003;
1124 packet.address = (addr & ~3) + 4;
1125 ret |= sisusb_send_packet(sisusb, 6, &packet);
1126 *data |= (packet.data << 16);
1127 break;
1128 case 3:
1129 packet.header = (type << 6) | 0x0008;
1130 ret = sisusb_send_packet(sisusb, 6, &packet);
1131 *data = packet.data >> 24;
1132 packet.header = (type << 6) | 0x0007;
1133 packet.address = (addr & ~3) + 4;
1134 ret |= sisusb_send_packet(sisusb, 6, &packet);
1135 *data |= (packet.data << 8);
1136 }
1137
1138 return ret;
1139 }
1140
1141 static int sisusb_read_mem_bulk(struct sisusb_usb_data *sisusb, u32 addr,
1142 char *kernbuffer, int length,
1143 char __user *userbuffer, ssize_t *bytes_read)
1144 {
1145 int ret = 0;
1146 char buf[4];
1147 u16 swap16;
1148 u32 swap32;
1149
1150 (*bytes_read = 0);
1151
1152 length &= 0x00ffffff;
1153
1154 while (length) {
1155
1156 switch (length) {
1157
1158 case 1:
1159
1160 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM,
1161 addr, &buf[0]);
1162 if (!ret) {
1163 (*bytes_read)++;
1164 if (userbuffer) {
1165 if (put_user(buf[0],
1166 (u8 __user *)userbuffer)) {
1167 return -EFAULT;
1168 }
1169 } else {
1170 kernbuffer[0] = buf[0];
1171 }
1172 }
1173 return ret;
1174
1175 case 2:
1176 ret |= sisusb_read_memio_word(sisusb, SISUSB_TYPE_MEM,
1177 addr, &swap16);
1178 if (!ret) {
1179 (*bytes_read) += 2;
1180 if (userbuffer) {
1181 if (put_user(swap16,
1182 (u16 __user *)userbuffer))
1183 return -EFAULT;
1184 } else {
1185 *((u16 *)kernbuffer) = swap16;
1186 }
1187 }
1188 return ret;
1189
1190 case 3:
1191 ret |= sisusb_read_memio_24bit(sisusb, SISUSB_TYPE_MEM,
1192 addr, &swap32);
1193 if (!ret) {
1194 (*bytes_read) += 3;
1195 #ifdef __BIG_ENDIAN
1196 buf[0] = (swap32 >> 16) & 0xff;
1197 buf[1] = (swap32 >> 8) & 0xff;
1198 buf[2] = swap32 & 0xff;
1199 #else
1200 buf[2] = (swap32 >> 16) & 0xff;
1201 buf[1] = (swap32 >> 8) & 0xff;
1202 buf[0] = swap32 & 0xff;
1203 #endif
1204 if (userbuffer) {
1205 if (copy_to_user(userbuffer, &buf[0], 3))
1206 return -EFAULT;
1207 } else {
1208 kernbuffer[0] = buf[0];
1209 kernbuffer[1] = buf[1];
1210 kernbuffer[2] = buf[2];
1211 }
1212 }
1213 return ret;
1214
1215 default:
1216 ret |= sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM,
1217 addr, &swap32);
1218 if (!ret) {
1219 (*bytes_read) += 4;
1220 if (userbuffer) {
1221 if (put_user(swap32,
1222 (u32 __user *)userbuffer))
1223 return -EFAULT;
1224
1225 userbuffer += 4;
1226 } else {
1227 *((u32 *)kernbuffer) = swap32;
1228 kernbuffer += 4;
1229 }
1230 addr += 4;
1231 length -= 4;
1232 }
1233 }
1234
1235 if (ret)
1236 break;
1237 }
1238
1239 return ret;
1240 }
1241
1242 /* High level: Gfx (indexed) register access */
1243
1244 #ifdef INCL_SISUSB_CON
1245 int
1246 sisusb_setreg(struct sisusb_usb_data *sisusb, int port, u8 data)
1247 {
1248 return sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, data);
1249 }
1250
1251 int
1252 sisusb_getreg(struct sisusb_usb_data *sisusb, int port, u8 *data)
1253 {
1254 return sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port, data);
1255 }
1256 #endif
1257
1258 int
1259 sisusb_setidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 data)
1260 {
1261 int ret;
1262 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, index);
1263 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, data);
1264 return ret;
1265 }
1266
1267 int
1268 sisusb_getidxreg(struct sisusb_usb_data *sisusb, int port, u8 index, u8 *data)
1269 {
1270 int ret;
1271 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, index);
1272 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, data);
1273 return ret;
1274 }
1275
1276 int
1277 sisusb_setidxregandor(struct sisusb_usb_data *sisusb, int port, u8 idx,
1278 u8 myand, u8 myor)
1279 {
1280 int ret;
1281 u8 tmp;
1282
1283 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, idx);
1284 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, &tmp);
1285 tmp &= myand;
1286 tmp |= myor;
1287 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, tmp);
1288 return ret;
1289 }
1290
1291 static int
1292 sisusb_setidxregmask(struct sisusb_usb_data *sisusb, int port, u8 idx,
1293 u8 data, u8 mask)
1294 {
1295 int ret;
1296 u8 tmp;
1297 ret = sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port, idx);
1298 ret |= sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, &tmp);
1299 tmp &= ~(mask);
1300 tmp |= (data & mask);
1301 ret |= sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, port + 1, tmp);
1302 return ret;
1303 }
1304
1305 int
1306 sisusb_setidxregor(struct sisusb_usb_data *sisusb, int port, u8 index, u8 myor)
1307 {
1308 return(sisusb_setidxregandor(sisusb, port, index, 0xff, myor));
1309 }
1310
1311 int
1312 sisusb_setidxregand(struct sisusb_usb_data *sisusb, int port, u8 idx, u8 myand)
1313 {
1314 return(sisusb_setidxregandor(sisusb, port, idx, myand, 0x00));
1315 }
1316
1317 /* Write/read video ram */
1318
1319 #ifdef INCL_SISUSB_CON
1320 int
1321 sisusb_writeb(struct sisusb_usb_data *sisusb, u32 adr, u8 data)
1322 {
1323 return(sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data));
1324 }
1325
1326 int
1327 sisusb_readb(struct sisusb_usb_data *sisusb, u32 adr, u8 *data)
1328 {
1329 return(sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, adr, data));
1330 }
1331
1332 int
1333 sisusb_copy_memory(struct sisusb_usb_data *sisusb, char *src,
1334 u32 dest, int length, size_t *bytes_written)
1335 {
1336 return(sisusb_write_mem_bulk(sisusb, dest, src, length, NULL, 0, bytes_written));
1337 }
1338
1339 #ifdef SISUSBENDIANTEST
1340 int
1341 sisusb_read_memory(struct sisusb_usb_data *sisusb, char *dest,
1342 u32 src, int length, size_t *bytes_written)
1343 {
1344 return(sisusb_read_mem_bulk(sisusb, src, dest, length, NULL, bytes_written));
1345 }
1346 #endif
1347 #endif
1348
1349 #ifdef SISUSBENDIANTEST
1350 static void
1351 sisusb_testreadwrite(struct sisusb_usb_data *sisusb)
1352 {
1353 static char srcbuffer[] = { 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 };
1354 char destbuffer[10];
1355 size_t dummy;
1356 int i,j;
1357
1358 sisusb_copy_memory(sisusb, srcbuffer, sisusb->vrambase, 7, &dummy);
1359
1360 for(i = 1; i <= 7; i++) {
1361 dev_dbg(&sisusb->sisusb_dev->dev, "sisusb: rwtest %d bytes\n", i);
1362 sisusb_read_memory(sisusb, destbuffer, sisusb->vrambase, i, &dummy);
1363 for(j = 0; j < i; j++) {
1364 dev_dbg(&sisusb->sisusb_dev->dev, "rwtest read[%d] = %x\n", j, destbuffer[j]);
1365 }
1366 }
1367 }
1368 #endif
1369
1370 /* access pci config registers (reg numbers 0, 4, 8, etc) */
1371
1372 static int
1373 sisusb_write_pci_config(struct sisusb_usb_data *sisusb, int regnum, u32 data)
1374 {
1375 struct sisusb_packet packet;
1376 int ret;
1377
1378 packet.header = 0x008f;
1379 packet.address = regnum | 0x10000;
1380 packet.data = data;
1381 ret = sisusb_send_packet(sisusb, 10, &packet);
1382 return ret;
1383 }
1384
1385 static int
1386 sisusb_read_pci_config(struct sisusb_usb_data *sisusb, int regnum, u32 *data)
1387 {
1388 struct sisusb_packet packet;
1389 int ret;
1390
1391 packet.header = 0x008f;
1392 packet.address = (u32)regnum | 0x10000;
1393 ret = sisusb_send_packet(sisusb, 6, &packet);
1394 *data = packet.data;
1395 return ret;
1396 }
1397
1398 /* Clear video RAM */
1399
1400 static int
1401 sisusb_clear_vram(struct sisusb_usb_data *sisusb, u32 address, int length)
1402 {
1403 int ret, i;
1404 ssize_t j;
1405
1406 if (address < sisusb->vrambase)
1407 return 1;
1408
1409 if (address >= sisusb->vrambase + sisusb->vramsize)
1410 return 1;
1411
1412 if (address + length > sisusb->vrambase + sisusb->vramsize)
1413 length = sisusb->vrambase + sisusb->vramsize - address;
1414
1415 if (length <= 0)
1416 return 0;
1417
1418 /* allocate free buffer/urb and clear the buffer */
1419 if ((i = sisusb_alloc_outbuf(sisusb)) < 0)
1420 return -EBUSY;
1421
1422 memset(sisusb->obuf[i], 0, sisusb->obufsize);
1423
1424 /* We can write a length > buffer size here. The buffer
1425 * data will simply be re-used (like a ring-buffer).
1426 */
1427 ret = sisusb_write_mem_bulk(sisusb, address, NULL, length, NULL, i, &j);
1428
1429 /* Free the buffer/urb */
1430 sisusb_free_outbuf(sisusb, i);
1431
1432 return ret;
1433 }
1434
1435 /* Initialize the graphics core (return 0 on success)
1436 * This resets the graphics hardware and puts it into
1437 * a defined mode (640x480@60Hz)
1438 */
1439
1440 #define GETREG(r,d) sisusb_read_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
1441 #define SETREG(r,d) sisusb_write_memio_byte(sisusb, SISUSB_TYPE_IO, r, d)
1442 #define SETIREG(r,i,d) sisusb_setidxreg(sisusb, r, i, d)
1443 #define GETIREG(r,i,d) sisusb_getidxreg(sisusb, r, i, d)
1444 #define SETIREGOR(r,i,o) sisusb_setidxregor(sisusb, r, i, o)
1445 #define SETIREGAND(r,i,a) sisusb_setidxregand(sisusb, r, i, a)
1446 #define SETIREGANDOR(r,i,a,o) sisusb_setidxregandor(sisusb, r, i, a, o)
1447 #define READL(a,d) sisusb_read_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
1448 #define WRITEL(a,d) sisusb_write_memio_long(sisusb, SISUSB_TYPE_MEM, a, d)
1449 #define READB(a,d) sisusb_read_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
1450 #define WRITEB(a,d) sisusb_write_memio_byte(sisusb, SISUSB_TYPE_MEM, a, d)
1451
1452 static int
1453 sisusb_triggersr16(struct sisusb_usb_data *sisusb, u8 ramtype)
1454 {
1455 int ret;
1456 u8 tmp8;
1457
1458 ret = GETIREG(SISSR, 0x16, &tmp8);
1459 if (ramtype <= 1) {
1460 tmp8 &= 0x3f;
1461 ret |= SETIREG(SISSR, 0x16, tmp8);
1462 tmp8 |= 0x80;
1463 ret |= SETIREG(SISSR, 0x16, tmp8);
1464 } else {
1465 tmp8 |= 0xc0;
1466 ret |= SETIREG(SISSR, 0x16, tmp8);
1467 tmp8 &= 0x0f;
1468 ret |= SETIREG(SISSR, 0x16, tmp8);
1469 tmp8 |= 0x80;
1470 ret |= SETIREG(SISSR, 0x16, tmp8);
1471 tmp8 &= 0x0f;
1472 ret |= SETIREG(SISSR, 0x16, tmp8);
1473 tmp8 |= 0xd0;
1474 ret |= SETIREG(SISSR, 0x16, tmp8);
1475 tmp8 &= 0x0f;
1476 ret |= SETIREG(SISSR, 0x16, tmp8);
1477 tmp8 |= 0xa0;
1478 ret |= SETIREG(SISSR, 0x16, tmp8);
1479 }
1480 return ret;
1481 }
1482
1483 static int
1484 sisusb_getbuswidth(struct sisusb_usb_data *sisusb, int *bw, int *chab)
1485 {
1486 int ret;
1487 u8 ramtype, done = 0;
1488 u32 t0, t1, t2, t3;
1489 u32 ramptr = SISUSB_PCI_MEMBASE;
1490
1491 ret = GETIREG(SISSR, 0x3a, &ramtype);
1492 ramtype &= 3;
1493
1494 ret |= SETIREG(SISSR, 0x13, 0x00);
1495
1496 if (ramtype <= 1) {
1497 ret |= SETIREG(SISSR, 0x14, 0x12);
1498 ret |= SETIREGAND(SISSR, 0x15, 0xef);
1499 } else {
1500 ret |= SETIREG(SISSR, 0x14, 0x02);
1501 }
1502
1503 ret |= sisusb_triggersr16(sisusb, ramtype);
1504 ret |= WRITEL(ramptr + 0, 0x01234567);
1505 ret |= WRITEL(ramptr + 4, 0x456789ab);
1506 ret |= WRITEL(ramptr + 8, 0x89abcdef);
1507 ret |= WRITEL(ramptr + 12, 0xcdef0123);
1508 ret |= WRITEL(ramptr + 16, 0x55555555);
1509 ret |= WRITEL(ramptr + 20, 0x55555555);
1510 ret |= WRITEL(ramptr + 24, 0xffffffff);
1511 ret |= WRITEL(ramptr + 28, 0xffffffff);
1512 ret |= READL(ramptr + 0, &t0);
1513 ret |= READL(ramptr + 4, &t1);
1514 ret |= READL(ramptr + 8, &t2);
1515 ret |= READL(ramptr + 12, &t3);
1516
1517 if (ramtype <= 1) {
1518
1519 *chab = 0; *bw = 64;
1520
1521 if ((t3 != 0xcdef0123) || (t2 != 0x89abcdef)) {
1522 if ((t1 == 0x456789ab) && (t0 == 0x01234567)) {
1523 *chab = 0; *bw = 64;
1524 ret |= SETIREGAND(SISSR, 0x14, 0xfd);
1525 }
1526 }
1527 if ((t1 != 0x456789ab) || (t0 != 0x01234567)) {
1528 *chab = 1; *bw = 64;
1529 ret |= SETIREGANDOR(SISSR, 0x14, 0xfc,0x01);
1530
1531 ret |= sisusb_triggersr16(sisusb, ramtype);
1532 ret |= WRITEL(ramptr + 0, 0x89abcdef);
1533 ret |= WRITEL(ramptr + 4, 0xcdef0123);
1534 ret |= WRITEL(ramptr + 8, 0x55555555);
1535 ret |= WRITEL(ramptr + 12, 0x55555555);
1536 ret |= WRITEL(ramptr + 16, 0xaaaaaaaa);
1537 ret |= WRITEL(ramptr + 20, 0xaaaaaaaa);
1538 ret |= READL(ramptr + 4, &t1);
1539
1540 if (t1 != 0xcdef0123) {
1541 *bw = 32;
1542 ret |= SETIREGOR(SISSR, 0x15, 0x10);
1543 }
1544 }
1545
1546 } else {
1547
1548 *chab = 0; *bw = 64; /* default: cha, bw = 64 */
1549
1550 done = 0;
1551
1552 if (t1 == 0x456789ab) {
1553 if (t0 == 0x01234567) {
1554 *chab = 0; *bw = 64;
1555 done = 1;
1556 }
1557 } else {
1558 if (t0 == 0x01234567) {
1559 *chab = 0; *bw = 32;
1560 ret |= SETIREG(SISSR, 0x14, 0x00);
1561 done = 1;
1562 }
1563 }
1564
1565 if (!done) {
1566 ret |= SETIREG(SISSR, 0x14, 0x03);
1567 ret |= sisusb_triggersr16(sisusb, ramtype);
1568
1569 ret |= WRITEL(ramptr + 0, 0x01234567);
1570 ret |= WRITEL(ramptr + 4, 0x456789ab);
1571 ret |= WRITEL(ramptr + 8, 0x89abcdef);
1572 ret |= WRITEL(ramptr + 12, 0xcdef0123);
1573 ret |= WRITEL(ramptr + 16, 0x55555555);
1574 ret |= WRITEL(ramptr + 20, 0x55555555);
1575 ret |= WRITEL(ramptr + 24, 0xffffffff);
1576 ret |= WRITEL(ramptr + 28, 0xffffffff);
1577 ret |= READL(ramptr + 0, &t0);
1578 ret |= READL(ramptr + 4, &t1);
1579
1580 if (t1 == 0x456789ab) {
1581 if (t0 == 0x01234567) {
1582 *chab = 1; *bw = 64;
1583 return ret;
1584 } /* else error */
1585 } else {
1586 if (t0 == 0x01234567) {
1587 *chab = 1; *bw = 32;
1588 ret |= SETIREG(SISSR, 0x14, 0x01);
1589 } /* else error */
1590 }
1591 }
1592 }
1593 return ret;
1594 }
1595
1596 static int
1597 sisusb_verify_mclk(struct sisusb_usb_data *sisusb)
1598 {
1599 int ret = 0;
1600 u32 ramptr = SISUSB_PCI_MEMBASE;
1601 u8 tmp1, tmp2, i, j;
1602
1603 ret |= WRITEB(ramptr, 0xaa);
1604 ret |= WRITEB(ramptr + 16, 0x55);
1605 ret |= READB(ramptr, &tmp1);
1606 ret |= READB(ramptr + 16, &tmp2);
1607 if ((tmp1 != 0xaa) || (tmp2 != 0x55)) {
1608 for (i = 0, j = 16; i < 2; i++, j += 16) {
1609 ret |= GETIREG(SISSR, 0x21, &tmp1);
1610 ret |= SETIREGAND(SISSR, 0x21, (tmp1 & 0xfb));
1611 ret |= SETIREGOR(SISSR, 0x3c, 0x01); /* not on 330 */
1612 ret |= SETIREGAND(SISSR, 0x3c, 0xfe); /* not on 330 */
1613 ret |= SETIREG(SISSR, 0x21, tmp1);
1614 ret |= WRITEB(ramptr + 16 + j, j);
1615 ret |= READB(ramptr + 16 + j, &tmp1);
1616 if (tmp1 == j) {
1617 ret |= WRITEB(ramptr + j, j);
1618 break;
1619 }
1620 }
1621 }
1622 return ret;
1623 }
1624
1625 static int
1626 sisusb_set_rank(struct sisusb_usb_data *sisusb, int *iret, int index,
1627 u8 rankno, u8 chab, const u8 dramtype[][5],
1628 int bw)
1629 {
1630 int ret = 0, ranksize;
1631 u8 tmp;
1632
1633 *iret = 0;
1634
1635 if ((rankno == 2) && (dramtype[index][0] == 2))
1636 return ret;
1637
1638 ranksize = dramtype[index][3] / 2 * bw / 32;
1639
1640 if ((ranksize * rankno) > 128)
1641 return ret;
1642
1643 tmp = 0;
1644 while ((ranksize >>= 1) > 0) tmp += 0x10;
1645 tmp |= ((rankno - 1) << 2);
1646 tmp |= ((bw / 64) & 0x02);
1647 tmp |= (chab & 0x01);
1648
1649 ret = SETIREG(SISSR, 0x14, tmp);
1650 ret |= sisusb_triggersr16(sisusb, 0); /* sic! */
1651
1652 *iret = 1;
1653
1654 return ret;
1655 }
1656
1657 static int
1658 sisusb_check_rbc(struct sisusb_usb_data *sisusb, int *iret, u32 inc, int testn)
1659 {
1660 int ret = 0, i;
1661 u32 j, tmp;
1662
1663 *iret = 0;
1664
1665 for (i = 0, j = 0; i < testn; i++) {
1666 ret |= WRITEL(sisusb->vrambase + j, j);
1667 j += inc;
1668 }
1669
1670 for (i = 0, j = 0; i < testn; i++) {
1671 ret |= READL(sisusb->vrambase + j, &tmp);
1672 if (tmp != j) return ret;
1673 j += inc;
1674 }
1675
1676 *iret = 1;
1677 return ret;
1678 }
1679
1680 static int
1681 sisusb_check_ranks(struct sisusb_usb_data *sisusb, int *iret, int rankno,
1682 int idx, int bw, const u8 rtype[][5])
1683 {
1684 int ret = 0, i, i2ret;
1685 u32 inc;
1686
1687 *iret = 0;
1688
1689 for (i = rankno; i >= 1; i--) {
1690 inc = 1 << (rtype[idx][2] +
1691 rtype[idx][1] +
1692 rtype[idx][0] +
1693 bw / 64 + i);
1694 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
1695 if (!i2ret)
1696 return ret;
1697 }
1698
1699 inc = 1 << (rtype[idx][2] + bw / 64 + 2);
1700 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 4);
1701 if (!i2ret)
1702 return ret;
1703
1704 inc = 1 << (10 + bw / 64);
1705 ret |= sisusb_check_rbc(sisusb, &i2ret, inc, 2);
1706 if (!i2ret)
1707 return ret;
1708
1709 *iret = 1;
1710 return ret;
1711 }
1712
1713 static int
1714 sisusb_get_sdram_size(struct sisusb_usb_data *sisusb, int *iret, int bw,
1715 int chab)
1716 {
1717 int ret = 0, i2ret = 0, i, j;
1718 static const u8 sdramtype[13][5] = {
1719 { 2, 12, 9, 64, 0x35 },
1720 { 1, 13, 9, 64, 0x44 },
1721 { 2, 12, 8, 32, 0x31 },
1722 { 2, 11, 9, 32, 0x25 },
1723 { 1, 12, 9, 32, 0x34 },
1724 { 1, 13, 8, 32, 0x40 },
1725 { 2, 11, 8, 16, 0x21 },
1726 { 1, 12, 8, 16, 0x30 },
1727 { 1, 11, 9, 16, 0x24 },
1728 { 1, 11, 8, 8, 0x20 },
1729 { 2, 9, 8, 4, 0x01 },
1730 { 1, 10, 8, 4, 0x10 },
1731 { 1, 9, 8, 2, 0x00 }
1732 };
1733
1734 *iret = 1; /* error */
1735
1736 for (i = 0; i < 13; i++) {
1737 ret |= SETIREGANDOR(SISSR, 0x13, 0x80, sdramtype[i][4]);
1738 for (j = 2; j > 0; j--) {
1739 ret |= sisusb_set_rank(sisusb, &i2ret, i, j,
1740 chab, sdramtype, bw);
1741 if (!i2ret)
1742 continue;
1743
1744 ret |= sisusb_check_ranks(sisusb, &i2ret, j, i,
1745 bw, sdramtype);
1746 if (i2ret) {
1747 *iret = 0; /* ram size found */
1748 return ret;
1749 }
1750 }
1751 }
1752
1753 return ret;
1754 }
1755
1756 static int
1757 sisusb_setup_screen(struct sisusb_usb_data *sisusb, int clrall, int drwfr)
1758 {
1759 int ret = 0;
1760 u32 address;
1761 int i, length, modex, modey, bpp;
1762
1763 modex = 640; modey = 480; bpp = 2;
1764
1765 address = sisusb->vrambase; /* Clear video ram */
1766
1767 if (clrall)
1768 length = sisusb->vramsize;
1769 else
1770 length = modex * bpp * modey;
1771
1772 ret = sisusb_clear_vram(sisusb, address, length);
1773
1774 if (!ret && drwfr) {
1775 for (i = 0; i < modex; i++) {
1776 address = sisusb->vrambase + (i * bpp);
1777 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1778 address, 0xf100);
1779 address += (modex * (modey-1) * bpp);
1780 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1781 address, 0xf100);
1782 }
1783 for (i = 0; i < modey; i++) {
1784 address = sisusb->vrambase + ((i * modex) * bpp);
1785 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1786 address, 0xf100);
1787 address += ((modex - 1) * bpp);
1788 ret |= sisusb_write_memio_word(sisusb, SISUSB_TYPE_MEM,
1789 address, 0xf100);
1790 }
1791 }
1792
1793 return ret;
1794 }
1795
1796 static int
1797 sisusb_set_default_mode(struct sisusb_usb_data *sisusb, int touchengines)
1798 {
1799 int ret = 0, i, j, modex, modey, bpp, du;
1800 u8 sr31, cr63, tmp8;
1801 static const char attrdata[] = {
1802 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
1803 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
1804 0x01,0x00,0x00,0x00
1805 };
1806 static const char crtcrdata[] = {
1807 0x5f,0x4f,0x50,0x82,0x54,0x80,0x0b,0x3e,
1808 0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,
1809 0xea,0x8c,0xdf,0x28,0x40,0xe7,0x04,0xa3,
1810 0xff
1811 };
1812 static const char grcdata[] = {
1813 0x00,0x00,0x00,0x00,0x00,0x40,0x05,0x0f,
1814 0xff
1815 };
1816 static const char crtcdata[] = {
1817 0x5f,0x4f,0x4f,0x83,0x55,0x81,0x0b,0x3e,
1818 0xe9,0x8b,0xdf,0xe8,0x0c,0x00,0x00,0x05,
1819 0x00
1820 };
1821
1822 modex = 640; modey = 480; bpp = 2;
1823
1824 GETIREG(SISSR, 0x31, &sr31);
1825 GETIREG(SISCR, 0x63, &cr63);
1826 SETIREGOR(SISSR, 0x01, 0x20);
1827 SETIREG(SISCR, 0x63, cr63 & 0xbf);
1828 SETIREGOR(SISCR, 0x17, 0x80);
1829 SETIREGOR(SISSR, 0x1f, 0x04);
1830 SETIREGAND(SISSR, 0x07, 0xfb);
1831 SETIREG(SISSR, 0x00, 0x03); /* seq */
1832 SETIREG(SISSR, 0x01, 0x21);
1833 SETIREG(SISSR, 0x02, 0x0f);
1834 SETIREG(SISSR, 0x03, 0x00);
1835 SETIREG(SISSR, 0x04, 0x0e);
1836 SETREG(SISMISCW, 0x23); /* misc */
1837 for (i = 0; i <= 0x18; i++) { /* crtc */
1838 SETIREG(SISCR, i, crtcrdata[i]);
1839 }
1840 for (i = 0; i <= 0x13; i++) { /* att */
1841 GETREG(SISINPSTAT, &tmp8);
1842 SETREG(SISAR, i);
1843 SETREG(SISAR, attrdata[i]);
1844 }
1845 GETREG(SISINPSTAT, &tmp8);
1846 SETREG(SISAR, 0x14);
1847 SETREG(SISAR, 0x00);
1848 GETREG(SISINPSTAT, &tmp8);
1849 SETREG(SISAR, 0x20);
1850 GETREG(SISINPSTAT, &tmp8);
1851 for (i = 0; i <= 0x08; i++) { /* grc */
1852 SETIREG(SISGR, i, grcdata[i]);
1853 }
1854 SETIREGAND(SISGR, 0x05, 0xbf);
1855 for (i = 0x0A; i <= 0x0E; i++) { /* clr ext */
1856 SETIREG(SISSR, i, 0x00);
1857 }
1858 SETIREGAND(SISSR, 0x37, 0xfe);
1859 SETREG(SISMISCW, 0xef); /* sync */
1860 SETIREG(SISCR, 0x11, 0x00); /* crtc */
1861 for (j = 0x00, i = 0; i <= 7; i++, j++) {
1862 SETIREG(SISCR, j, crtcdata[i]);
1863 }
1864 for (j = 0x10; i <= 10; i++, j++) {
1865 SETIREG(SISCR, j, crtcdata[i]);
1866 }
1867 for (j = 0x15; i <= 12; i++, j++) {
1868 SETIREG(SISCR, j, crtcdata[i]);
1869 }
1870 for (j = 0x0A; i <= 15; i++, j++) {
1871 SETIREG(SISSR, j, crtcdata[i]);
1872 }
1873 SETIREG(SISSR, 0x0E, (crtcdata[16] & 0xE0));
1874 SETIREGANDOR(SISCR, 0x09, 0x5f, ((crtcdata[16] & 0x01) << 5));
1875 SETIREG(SISCR, 0x14, 0x4f);
1876 du = (modex / 16) * (bpp * 2); /* offset/pitch */
1877 if (modex % 16) du += bpp;
1878 SETIREGANDOR(SISSR, 0x0e, 0xf0, ((du >> 8) & 0x0f));
1879 SETIREG(SISCR, 0x13, (du & 0xff));
1880 du <<= 5;
1881 tmp8 = du >> 8;
1882 if (du & 0xff) tmp8++;
1883 SETIREG(SISSR, 0x10, tmp8);
1884 SETIREG(SISSR, 0x31, 0x00); /* VCLK */
1885 SETIREG(SISSR, 0x2b, 0x1b);
1886 SETIREG(SISSR, 0x2c, 0xe1);
1887 SETIREG(SISSR, 0x2d, 0x01);
1888 SETIREGAND(SISSR, 0x3d, 0xfe); /* FIFO */
1889 SETIREG(SISSR, 0x08, 0xae);
1890 SETIREGAND(SISSR, 0x09, 0xf0);
1891 SETIREG(SISSR, 0x08, 0x34);
1892 SETIREGOR(SISSR, 0x3d, 0x01);
1893 SETIREGAND(SISSR, 0x1f, 0x3f); /* mode regs */
1894 SETIREGANDOR(SISSR, 0x06, 0xc0, 0x0a);
1895 SETIREG(SISCR, 0x19, 0x00);
1896 SETIREGAND(SISCR, 0x1a, 0xfc);
1897 SETIREGAND(SISSR, 0x0f, 0xb7);
1898 SETIREGAND(SISSR, 0x31, 0xfb);
1899 SETIREGANDOR(SISSR, 0x21, 0x1f, 0xa0);
1900 SETIREGAND(SISSR, 0x32, 0xf3);
1901 SETIREGANDOR(SISSR, 0x07, 0xf8, 0x03);
1902 SETIREG(SISCR, 0x52, 0x6c);
1903
1904 SETIREG(SISCR, 0x0d, 0x00); /* adjust frame */
1905 SETIREG(SISCR, 0x0c, 0x00);
1906 SETIREG(SISSR, 0x0d, 0x00);
1907 SETIREGAND(SISSR, 0x37, 0xfe);
1908
1909 SETIREG(SISCR, 0x32, 0x20);
1910 SETIREGAND(SISSR, 0x01, 0xdf); /* enable display */
1911 SETIREG(SISCR, 0x63, (cr63 & 0xbf));
1912 SETIREG(SISSR, 0x31, (sr31 & 0xfb));
1913
1914 if (touchengines) {
1915 SETIREG(SISSR, 0x20, 0xa1); /* enable engines */
1916 SETIREGOR(SISSR, 0x1e, 0x5a);
1917
1918 SETIREG(SISSR, 0x26, 0x01); /* disable cmdqueue */
1919 SETIREG(SISSR, 0x27, 0x1f);
1920 SETIREG(SISSR, 0x26, 0x00);
1921 }
1922
1923 SETIREG(SISCR, 0x34, 0x44); /* we just set std mode #44 */
1924
1925 return ret;
1926 }
1927
1928 static int
1929 sisusb_init_gfxcore(struct sisusb_usb_data *sisusb)
1930 {
1931 int ret = 0, i, j, bw, chab, iret, retry = 3;
1932 u8 tmp8, ramtype;
1933 u32 tmp32;
1934 static const char mclktable[] = {
1935 0x3b, 0x22, 0x01, 143,
1936 0x3b, 0x22, 0x01, 143,
1937 0x3b, 0x22, 0x01, 143,
1938 0x3b, 0x22, 0x01, 143
1939 };
1940 static const char eclktable[] = {
1941 0x3b, 0x22, 0x01, 143,
1942 0x3b, 0x22, 0x01, 143,
1943 0x3b, 0x22, 0x01, 143,
1944 0x3b, 0x22, 0x01, 143
1945 };
1946 static const char ramtypetable1[] = {
1947 0x00, 0x04, 0x60, 0x60,
1948 0x0f, 0x0f, 0x1f, 0x1f,
1949 0xba, 0xba, 0xba, 0xba,
1950 0xa9, 0xa9, 0xac, 0xac,
1951 0xa0, 0xa0, 0xa0, 0xa8,
1952 0x00, 0x00, 0x02, 0x02,
1953 0x30, 0x30, 0x40, 0x40
1954 };
1955 static const char ramtypetable2[] = {
1956 0x77, 0x77, 0x44, 0x44,
1957 0x77, 0x77, 0x44, 0x44,
1958 0x00, 0x00, 0x00, 0x00,
1959 0x5b, 0x5b, 0xab, 0xab,
1960 0x00, 0x00, 0xf0, 0xf8
1961 };
1962
1963 while (retry--) {
1964
1965 /* Enable VGA */
1966 ret = GETREG(SISVGAEN, &tmp8);
1967 ret |= SETREG(SISVGAEN, (tmp8 | 0x01));
1968
1969 /* Enable GPU access to VRAM */
1970 ret |= GETREG(SISMISCR, &tmp8);
1971 ret |= SETREG(SISMISCW, (tmp8 | 0x01));
1972
1973 if (ret) continue;
1974
1975 /* Reset registers */
1976 ret |= SETIREGAND(SISCR, 0x5b, 0xdf);
1977 ret |= SETIREG(SISSR, 0x05, 0x86);
1978 ret |= SETIREGOR(SISSR, 0x20, 0x01);
1979
1980 ret |= SETREG(SISMISCW, 0x67);
1981
1982 for (i = 0x06; i <= 0x1f; i++) {
1983 ret |= SETIREG(SISSR, i, 0x00);
1984 }
1985 for (i = 0x21; i <= 0x27; i++) {
1986 ret |= SETIREG(SISSR, i, 0x00);
1987 }
1988 for (i = 0x31; i <= 0x3d; i++) {
1989 ret |= SETIREG(SISSR, i, 0x00);
1990 }
1991 for (i = 0x12; i <= 0x1b; i++) {
1992 ret |= SETIREG(SISSR, i, 0x00);
1993 }
1994 for (i = 0x79; i <= 0x7c; i++) {
1995 ret |= SETIREG(SISCR, i, 0x00);
1996 }
1997
1998 if (ret) continue;
1999
2000 ret |= SETIREG(SISCR, 0x63, 0x80);
2001
2002 ret |= GETIREG(SISSR, 0x3a, &ramtype);
2003 ramtype &= 0x03;
2004
2005 ret |= SETIREG(SISSR, 0x28, mclktable[ramtype * 4]);
2006 ret |= SETIREG(SISSR, 0x29, mclktable[(ramtype * 4) + 1]);
2007 ret |= SETIREG(SISSR, 0x2a, mclktable[(ramtype * 4) + 2]);
2008
2009 ret |= SETIREG(SISSR, 0x2e, eclktable[ramtype * 4]);
2010 ret |= SETIREG(SISSR, 0x2f, eclktable[(ramtype * 4) + 1]);
2011 ret |= SETIREG(SISSR, 0x30, eclktable[(ramtype * 4) + 2]);
2012
2013 ret |= SETIREG(SISSR, 0x07, 0x18);
2014 ret |= SETIREG(SISSR, 0x11, 0x0f);
2015
2016 if (ret) continue;
2017
2018 for (i = 0x15, j = 0; i <= 0x1b; i++, j++) {
2019 ret |= SETIREG(SISSR, i, ramtypetable1[(j*4) + ramtype]);
2020 }
2021 for (i = 0x40, j = 0; i <= 0x44; i++, j++) {
2022 ret |= SETIREG(SISCR, i, ramtypetable2[(j*4) + ramtype]);
2023 }
2024
2025 ret |= SETIREG(SISCR, 0x49, 0xaa);
2026
2027 ret |= SETIREG(SISSR, 0x1f, 0x00);
2028 ret |= SETIREG(SISSR, 0x20, 0xa0);
2029 ret |= SETIREG(SISSR, 0x23, 0xf6);
2030 ret |= SETIREG(SISSR, 0x24, 0x0d);
2031 ret |= SETIREG(SISSR, 0x25, 0x33);
2032
2033 ret |= SETIREG(SISSR, 0x11, 0x0f);
2034
2035 ret |= SETIREGOR(SISPART1, 0x2f, 0x01);
2036
2037 ret |= SETIREGAND(SISCAP, 0x3f, 0xef);
2038
2039 if (ret) continue;
2040
2041 ret |= SETIREG(SISPART1, 0x00, 0x00);
2042
2043 ret |= GETIREG(SISSR, 0x13, &tmp8);
2044 tmp8 >>= 4;
2045
2046 ret |= SETIREG(SISPART1, 0x02, 0x00);
2047 ret |= SETIREG(SISPART1, 0x2e, 0x08);
2048
2049 ret |= sisusb_read_pci_config(sisusb, 0x50, &tmp32);
2050 tmp32 &= 0x00f00000;
2051 tmp8 = (tmp32 == 0x100000) ? 0x33 : 0x03;
2052 ret |= SETIREG(SISSR, 0x25, tmp8);
2053 tmp8 = (tmp32 == 0x100000) ? 0xaa : 0x88;
2054 ret |= SETIREG(SISCR, 0x49, tmp8);
2055
2056 ret |= SETIREG(SISSR, 0x27, 0x1f);
2057 ret |= SETIREG(SISSR, 0x31, 0x00);
2058 ret |= SETIREG(SISSR, 0x32, 0x11);
2059 ret |= SETIREG(SISSR, 0x33, 0x00);
2060
2061 if (ret) continue;
2062
2063 ret |= SETIREG(SISCR, 0x83, 0x00);
2064
2065 ret |= sisusb_set_default_mode(sisusb, 0);
2066
2067 ret |= SETIREGAND(SISSR, 0x21, 0xdf);
2068 ret |= SETIREGOR(SISSR, 0x01, 0x20);
2069 ret |= SETIREGOR(SISSR, 0x16, 0x0f);
2070
2071 ret |= sisusb_triggersr16(sisusb, ramtype);
2072
2073 /* Disable refresh */
2074 ret |= SETIREGAND(SISSR, 0x17, 0xf8);
2075 ret |= SETIREGOR(SISSR, 0x19, 0x03);
2076
2077 ret |= sisusb_getbuswidth(sisusb, &bw, &chab);
2078 ret |= sisusb_verify_mclk(sisusb);
2079
2080 if (ramtype <= 1) {
2081 ret |= sisusb_get_sdram_size(sisusb, &iret, bw, chab);
2082 if (iret) {
2083 dev_err(&sisusb->sisusb_dev->dev,"RAM size detection failed, assuming 8MB video RAM\n");
2084 ret |= SETIREG(SISSR,0x14,0x31);
2085 /* TODO */
2086 }
2087 } else {
2088 dev_err(&sisusb->sisusb_dev->dev, "DDR RAM device found, assuming 8MB video RAM\n");
2089 ret |= SETIREG(SISSR,0x14,0x31);
2090 /* *** TODO *** */
2091 }
2092
2093 /* Enable refresh */
2094 ret |= SETIREG(SISSR, 0x16, ramtypetable1[4 + ramtype]);
2095 ret |= SETIREG(SISSR, 0x17, ramtypetable1[8 + ramtype]);
2096 ret |= SETIREG(SISSR, 0x19, ramtypetable1[16 + ramtype]);
2097
2098 ret |= SETIREGOR(SISSR, 0x21, 0x20);
2099
2100 ret |= SETIREG(SISSR, 0x22, 0xfb);
2101 ret |= SETIREG(SISSR, 0x21, 0xa5);
2102
2103 if (ret == 0)
2104 break;
2105 }
2106
2107 return ret;
2108 }
2109
2110 #undef SETREG
2111 #undef GETREG
2112 #undef SETIREG
2113 #undef GETIREG
2114 #undef SETIREGOR
2115 #undef SETIREGAND
2116 #undef SETIREGANDOR
2117 #undef READL
2118 #undef WRITEL
2119
2120 static void
2121 sisusb_get_ramconfig(struct sisusb_usb_data *sisusb)
2122 {
2123 u8 tmp8, tmp82, ramtype;
2124 int bw = 0;
2125 char *ramtypetext1 = NULL;
2126 const char *ramtypetext2[] = { "SDR SDRAM", "SDR SGRAM",
2127 "DDR SDRAM", "DDR SGRAM" };
2128 static const int busSDR[4] = {64, 64, 128, 128};
2129 static const int busDDR[4] = {32, 32, 64, 64};
2130 static const int busDDRA[4] = {64+32, 64+32 , (64+32)*2, (64+32)*2};
2131
2132 sisusb_getidxreg(sisusb, SISSR, 0x14, &tmp8);
2133 sisusb_getidxreg(sisusb, SISSR, 0x15, &tmp82);
2134 sisusb_getidxreg(sisusb, SISSR, 0x3a, &ramtype);
2135 sisusb->vramsize = (1 << ((tmp8 & 0xf0) >> 4)) * 1024 * 1024;
2136 ramtype &= 0x03;
2137 switch ((tmp8 >> 2) & 0x03) {
2138 case 0: ramtypetext1 = "1 ch/1 r";
2139 if (tmp82 & 0x10) {
2140 bw = 32;
2141 } else {
2142 bw = busSDR[(tmp8 & 0x03)];
2143 }
2144 break;
2145 case 1: ramtypetext1 = "1 ch/2 r";
2146 sisusb->vramsize <<= 1;
2147 bw = busSDR[(tmp8 & 0x03)];
2148 break;
2149 case 2: ramtypetext1 = "asymmeric";
2150 sisusb->vramsize += sisusb->vramsize/2;
2151 bw = busDDRA[(tmp8 & 0x03)];
2152 break;
2153 case 3: ramtypetext1 = "2 channel";
2154 sisusb->vramsize <<= 1;
2155 bw = busDDR[(tmp8 & 0x03)];
2156 break;
2157 }
2158
2159 dev_info(&sisusb->sisusb_dev->dev, "%dMB %s %s, bus width %d\n", (sisusb->vramsize >> 20), ramtypetext1,
2160 ramtypetext2[ramtype], bw);
2161 }
2162
2163 static int
2164 sisusb_do_init_gfxdevice(struct sisusb_usb_data *sisusb)
2165 {
2166 struct sisusb_packet packet;
2167 int ret;
2168 u32 tmp32;
2169
2170 /* Do some magic */
2171 packet.header = 0x001f;
2172 packet.address = 0x00000324;
2173 packet.data = 0x00000004;
2174 ret = sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2175
2176 packet.header = 0x001f;
2177 packet.address = 0x00000364;
2178 packet.data = 0x00000004;
2179 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2180
2181 packet.header = 0x001f;
2182 packet.address = 0x00000384;
2183 packet.data = 0x00000004;
2184 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2185
2186 packet.header = 0x001f;
2187 packet.address = 0x00000100;
2188 packet.data = 0x00000700;
2189 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2190
2191 packet.header = 0x000f;
2192 packet.address = 0x00000004;
2193 ret |= sisusb_send_bridge_packet(sisusb, 6, &packet, 0);
2194 packet.data |= 0x17;
2195 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2196
2197 /* Init BAR 0 (VRAM) */
2198 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2199 ret |= sisusb_write_pci_config(sisusb, 0x10, 0xfffffff0);
2200 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2201 tmp32 &= 0x0f;
2202 tmp32 |= SISUSB_PCI_MEMBASE;
2203 ret |= sisusb_write_pci_config(sisusb, 0x10, tmp32);
2204
2205 /* Init BAR 1 (MMIO) */
2206 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2207 ret |= sisusb_write_pci_config(sisusb, 0x14, 0xfffffff0);
2208 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2209 tmp32 &= 0x0f;
2210 tmp32 |= SISUSB_PCI_MMIOBASE;
2211 ret |= sisusb_write_pci_config(sisusb, 0x14, tmp32);
2212
2213 /* Init BAR 2 (i/o ports) */
2214 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2215 ret |= sisusb_write_pci_config(sisusb, 0x18, 0xfffffff0);
2216 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2217 tmp32 &= 0x0f;
2218 tmp32 |= SISUSB_PCI_IOPORTBASE;
2219 ret |= sisusb_write_pci_config(sisusb, 0x18, tmp32);
2220
2221 /* Enable memory and i/o access */
2222 ret |= sisusb_read_pci_config(sisusb, 0x04, &tmp32);
2223 tmp32 |= 0x3;
2224 ret |= sisusb_write_pci_config(sisusb, 0x04, tmp32);
2225
2226 if (ret == 0) {
2227 /* Some further magic */
2228 packet.header = 0x001f;
2229 packet.address = 0x00000050;
2230 packet.data = 0x000000ff;
2231 ret |= sisusb_send_bridge_packet(sisusb, 10, &packet, 0);
2232 }
2233
2234 return ret;
2235 }
2236
2237 /* Initialize the graphics device (return 0 on success)
2238 * This initializes the net2280 as well as the PCI registers
2239 * of the graphics board.
2240 */
2241
2242 static int
2243 sisusb_init_gfxdevice(struct sisusb_usb_data *sisusb, int initscreen)
2244 {
2245 int ret = 0, test = 0;
2246 u32 tmp32;
2247
2248 if (sisusb->devinit == 1) {
2249 /* Read PCI BARs and see if they have been set up */
2250 ret |= sisusb_read_pci_config(sisusb, 0x10, &tmp32);
2251 if (ret) return ret;
2252 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MEMBASE) test++;
2253
2254 ret |= sisusb_read_pci_config(sisusb, 0x14, &tmp32);
2255 if (ret) return ret;
2256 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_MMIOBASE) test++;
2257
2258 ret |= sisusb_read_pci_config(sisusb, 0x18, &tmp32);
2259 if (ret) return ret;
2260 if ((tmp32 & 0xfffffff0) == SISUSB_PCI_IOPORTBASE) test++;
2261 }
2262
2263 /* No? So reset the device */
2264 if ((sisusb->devinit == 0) || (test != 3)) {
2265
2266 ret |= sisusb_do_init_gfxdevice(sisusb);
2267
2268 if (ret == 0)
2269 sisusb->devinit = 1;
2270
2271 }
2272
2273 if (sisusb->devinit) {
2274 /* Initialize the graphics core */
2275 if (sisusb_init_gfxcore(sisusb) == 0) {
2276 sisusb->gfxinit = 1;
2277 sisusb_get_ramconfig(sisusb);
2278 ret |= sisusb_set_default_mode(sisusb, 1);
2279 ret |= sisusb_setup_screen(sisusb, 1, initscreen);
2280 }
2281 }
2282
2283 return ret;
2284 }
2285
2286
2287 #ifdef INCL_SISUSB_CON
2288
2289 /* Set up default text mode:
2290 - Set text mode (0x03)
2291 - Upload default font
2292 - Upload user font (if available)
2293 */
2294
2295 int
2296 sisusb_reset_text_mode(struct sisusb_usb_data *sisusb, int init)
2297 {
2298 int ret = 0, slot = sisusb->font_slot, i;
2299 const struct font_desc *myfont;
2300 u8 *tempbuf;
2301 u16 *tempbufb;
2302 size_t written;
2303 static const char bootstring[] = "SiSUSB VGA text console, (C) 2005 Thomas Winischhofer.";
2304 static const char bootlogo[] = "(o_ //\\ V_/_";
2305
2306 /* sisusb->lock is down */
2307
2308 if (!sisusb->SiS_Pr)
2309 return 1;
2310
2311 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2312 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2313
2314 /* Set mode 0x03 */
2315 SiSUSBSetMode(sisusb->SiS_Pr, 0x03);
2316
2317 if (!(myfont = find_font("VGA8x16")))
2318 return 1;
2319
2320 if (!(tempbuf = vmalloc(8192)))
2321 return 1;
2322
2323 for (i = 0; i < 256; i++)
2324 memcpy(tempbuf + (i * 32), myfont->data + (i * 16), 16);
2325
2326 /* Upload default font */
2327 ret = sisusbcon_do_font_op(sisusb, 1, 0, tempbuf, 8192, 0, 1, NULL, 16, 0);
2328
2329 vfree(tempbuf);
2330
2331 /* Upload user font (and reset current slot) */
2332 if (sisusb->font_backup) {
2333 ret |= sisusbcon_do_font_op(sisusb, 1, 2, sisusb->font_backup,
2334 8192, sisusb->font_backup_512, 1, NULL,
2335 sisusb->font_backup_height, 0);
2336 if (slot != 2)
2337 sisusbcon_do_font_op(sisusb, 1, 0, NULL, 0, 0, 1,
2338 NULL, 16, 0);
2339 }
2340
2341 if (init && !sisusb->scrbuf) {
2342
2343 if ((tempbuf = vmalloc(8192))) {
2344
2345 i = 4096;
2346 tempbufb = (u16 *)tempbuf;
2347 while (i--)
2348 *(tempbufb++) = 0x0720;
2349
2350 i = 0;
2351 tempbufb = (u16 *)tempbuf;
2352 while (bootlogo[i]) {
2353 *(tempbufb++) = 0x0700 | bootlogo[i++];
2354 if (!(i % 4))
2355 tempbufb += 76;
2356 }
2357
2358 i = 0;
2359 tempbufb = (u16 *)tempbuf + 6;
2360 while (bootstring[i])
2361 *(tempbufb++) = 0x0700 | bootstring[i++];
2362
2363 ret |= sisusb_copy_memory(sisusb, tempbuf,
2364 sisusb->vrambase, 8192, &written);
2365
2366 vfree(tempbuf);
2367
2368 }
2369
2370 } else if (sisusb->scrbuf) {
2371
2372 ret |= sisusb_copy_memory(sisusb, (char *)sisusb->scrbuf,
2373 sisusb->vrambase, sisusb->scrbuf_size, &written);
2374
2375 }
2376
2377 if (sisusb->sisusb_cursor_size_from >= 0 &&
2378 sisusb->sisusb_cursor_size_to >= 0) {
2379 sisusb_setidxreg(sisusb, SISCR, 0x0a,
2380 sisusb->sisusb_cursor_size_from);
2381 sisusb_setidxregandor(sisusb, SISCR, 0x0b, 0xe0,
2382 sisusb->sisusb_cursor_size_to);
2383 } else {
2384 sisusb_setidxreg(sisusb, SISCR, 0x0a, 0x2d);
2385 sisusb_setidxreg(sisusb, SISCR, 0x0b, 0x0e);
2386 sisusb->sisusb_cursor_size_to = -1;
2387 }
2388
2389 slot = sisusb->sisusb_cursor_loc;
2390 if(slot < 0) slot = 0;
2391
2392 sisusb->sisusb_cursor_loc = -1;
2393 sisusb->bad_cursor_pos = 1;
2394
2395 sisusb_set_cursor(sisusb, slot);
2396
2397 sisusb_setidxreg(sisusb, SISCR, 0x0c, (sisusb->cur_start_addr >> 8));
2398 sisusb_setidxreg(sisusb, SISCR, 0x0d, (sisusb->cur_start_addr & 0xff));
2399
2400 sisusb->textmodedestroyed = 0;
2401
2402 /* sisusb->lock is down */
2403
2404 return ret;
2405 }
2406
2407 #endif
2408
2409 /* fops */
2410
2411 static int
2412 sisusb_open(struct inode *inode, struct file *file)
2413 {
2414 struct sisusb_usb_data *sisusb;
2415 struct usb_interface *interface;
2416 int subminor = iminor(inode);
2417
2418 if (!(interface = usb_find_interface(&sisusb_driver, subminor))) {
2419 return -ENODEV;
2420 }
2421
2422 if (!(sisusb = usb_get_intfdata(interface))) {
2423 return -ENODEV;
2424 }
2425
2426 mutex_lock(&sisusb->lock);
2427
2428 if (!sisusb->present || !sisusb->ready) {
2429 mutex_unlock(&sisusb->lock);
2430 return -ENODEV;
2431 }
2432
2433 if (sisusb->isopen) {
2434 mutex_unlock(&sisusb->lock);
2435 return -EBUSY;
2436 }
2437
2438 if (!sisusb->devinit) {
2439 if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH ||
2440 sisusb->sisusb_dev->speed == USB_SPEED_SUPER) {
2441 if (sisusb_init_gfxdevice(sisusb, 0)) {
2442 mutex_unlock(&sisusb->lock);
2443 dev_err(&sisusb->sisusb_dev->dev, "Failed to initialize device\n");
2444 return -EIO;
2445 }
2446 } else {
2447 mutex_unlock(&sisusb->lock);
2448 dev_err(&sisusb->sisusb_dev->dev, "Device not attached to USB 2.0 hub\n");
2449 return -EIO;
2450 }
2451 }
2452
2453 /* Increment usage count for our sisusb */
2454 kref_get(&sisusb->kref);
2455
2456 sisusb->isopen = 1;
2457
2458 file->private_data = sisusb;
2459
2460 mutex_unlock(&sisusb->lock);
2461
2462 return 0;
2463 }
2464
2465 void
2466 sisusb_delete(struct kref *kref)
2467 {
2468 struct sisusb_usb_data *sisusb = to_sisusb_dev(kref);
2469
2470 if (!sisusb)
2471 return;
2472
2473 if (sisusb->sisusb_dev)
2474 usb_put_dev(sisusb->sisusb_dev);
2475
2476 sisusb->sisusb_dev = NULL;
2477 sisusb_free_buffers(sisusb);
2478 sisusb_free_urbs(sisusb);
2479 #ifdef INCL_SISUSB_CON
2480 kfree(sisusb->SiS_Pr);
2481 #endif
2482 kfree(sisusb);
2483 }
2484
2485 static int
2486 sisusb_release(struct inode *inode, struct file *file)
2487 {
2488 struct sisusb_usb_data *sisusb;
2489
2490 if (!(sisusb = file->private_data))
2491 return -ENODEV;
2492
2493 mutex_lock(&sisusb->lock);
2494
2495 if (sisusb->present) {
2496 /* Wait for all URBs to finish if device still present */
2497 if (!sisusb_wait_all_out_complete(sisusb))
2498 sisusb_kill_all_busy(sisusb);
2499 }
2500
2501 sisusb->isopen = 0;
2502 file->private_data = NULL;
2503
2504 mutex_unlock(&sisusb->lock);
2505
2506 /* decrement the usage count on our device */
2507 kref_put(&sisusb->kref, sisusb_delete);
2508
2509 return 0;
2510 }
2511
2512 static ssize_t
2513 sisusb_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
2514 {
2515 struct sisusb_usb_data *sisusb;
2516 ssize_t bytes_read = 0;
2517 int errno = 0;
2518 u8 buf8;
2519 u16 buf16;
2520 u32 buf32, address;
2521
2522 if (!(sisusb = file->private_data))
2523 return -ENODEV;
2524
2525 mutex_lock(&sisusb->lock);
2526
2527 /* Sanity check */
2528 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2529 mutex_unlock(&sisusb->lock);
2530 return -ENODEV;
2531 }
2532
2533 if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
2534 (*ppos) < SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
2535
2536 address = (*ppos) -
2537 SISUSB_PCI_PSEUDO_IOPORTBASE +
2538 SISUSB_PCI_IOPORTBASE;
2539
2540 /* Read i/o ports
2541 * Byte, word and long(32) can be read. As this
2542 * emulates inX instructions, the data returned is
2543 * in machine-endianness.
2544 */
2545 switch (count) {
2546
2547 case 1:
2548 if (sisusb_read_memio_byte(sisusb,
2549 SISUSB_TYPE_IO,
2550 address, &buf8))
2551 errno = -EIO;
2552 else if (put_user(buf8, (u8 __user *)buffer))
2553 errno = -EFAULT;
2554 else
2555 bytes_read = 1;
2556
2557 break;
2558
2559 case 2:
2560 if (sisusb_read_memio_word(sisusb,
2561 SISUSB_TYPE_IO,
2562 address, &buf16))
2563 errno = -EIO;
2564 else if (put_user(buf16, (u16 __user *)buffer))
2565 errno = -EFAULT;
2566 else
2567 bytes_read = 2;
2568
2569 break;
2570
2571 case 4:
2572 if (sisusb_read_memio_long(sisusb,
2573 SISUSB_TYPE_IO,
2574 address, &buf32))
2575 errno = -EIO;
2576 else if (put_user(buf32, (u32 __user *)buffer))
2577 errno = -EFAULT;
2578 else
2579 bytes_read = 4;
2580
2581 break;
2582
2583 default:
2584 errno = -EIO;
2585
2586 }
2587
2588 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE &&
2589 (*ppos) < SISUSB_PCI_PSEUDO_MEMBASE + sisusb->vramsize) {
2590
2591 address = (*ppos) -
2592 SISUSB_PCI_PSEUDO_MEMBASE +
2593 SISUSB_PCI_MEMBASE;
2594
2595 /* Read video ram
2596 * Remember: Data delivered is never endian-corrected
2597 */
2598 errno = sisusb_read_mem_bulk(sisusb, address,
2599 NULL, count, buffer, &bytes_read);
2600
2601 if (bytes_read)
2602 errno = bytes_read;
2603
2604 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
2605 (*ppos) < SISUSB_PCI_PSEUDO_MMIOBASE + SISUSB_PCI_MMIOSIZE) {
2606
2607 address = (*ppos) -
2608 SISUSB_PCI_PSEUDO_MMIOBASE +
2609 SISUSB_PCI_MMIOBASE;
2610
2611 /* Read MMIO
2612 * Remember: Data delivered is never endian-corrected
2613 */
2614 errno = sisusb_read_mem_bulk(sisusb, address,
2615 NULL, count, buffer, &bytes_read);
2616
2617 if (bytes_read)
2618 errno = bytes_read;
2619
2620 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
2621 (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + 0x5c) {
2622
2623 if (count != 4) {
2624 mutex_unlock(&sisusb->lock);
2625 return -EINVAL;
2626 }
2627
2628 address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
2629
2630 /* Read PCI config register
2631 * Return value delivered in machine endianness.
2632 */
2633 if (sisusb_read_pci_config(sisusb, address, &buf32))
2634 errno = -EIO;
2635 else if (put_user(buf32, (u32 __user *)buffer))
2636 errno = -EFAULT;
2637 else
2638 bytes_read = 4;
2639
2640 } else {
2641
2642 errno = -EBADFD;
2643
2644 }
2645
2646 (*ppos) += bytes_read;
2647
2648 mutex_unlock(&sisusb->lock);
2649
2650 return errno ? errno : bytes_read;
2651 }
2652
2653 static ssize_t
2654 sisusb_write(struct file *file, const char __user *buffer, size_t count,
2655 loff_t *ppos)
2656 {
2657 struct sisusb_usb_data *sisusb;
2658 int errno = 0;
2659 ssize_t bytes_written = 0;
2660 u8 buf8;
2661 u16 buf16;
2662 u32 buf32, address;
2663
2664 if (!(sisusb = file->private_data))
2665 return -ENODEV;
2666
2667 mutex_lock(&sisusb->lock);
2668
2669 /* Sanity check */
2670 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2671 mutex_unlock(&sisusb->lock);
2672 return -ENODEV;
2673 }
2674
2675 if ((*ppos) >= SISUSB_PCI_PSEUDO_IOPORTBASE &&
2676 (*ppos) < SISUSB_PCI_PSEUDO_IOPORTBASE + 128) {
2677
2678 address = (*ppos) -
2679 SISUSB_PCI_PSEUDO_IOPORTBASE +
2680 SISUSB_PCI_IOPORTBASE;
2681
2682 /* Write i/o ports
2683 * Byte, word and long(32) can be written. As this
2684 * emulates outX instructions, the data is expected
2685 * in machine-endianness.
2686 */
2687 switch (count) {
2688
2689 case 1:
2690 if (get_user(buf8, (u8 __user *)buffer))
2691 errno = -EFAULT;
2692 else if (sisusb_write_memio_byte(sisusb,
2693 SISUSB_TYPE_IO,
2694 address, buf8))
2695 errno = -EIO;
2696 else
2697 bytes_written = 1;
2698
2699 break;
2700
2701 case 2:
2702 if (get_user(buf16, (u16 __user *)buffer))
2703 errno = -EFAULT;
2704 else if (sisusb_write_memio_word(sisusb,
2705 SISUSB_TYPE_IO,
2706 address, buf16))
2707 errno = -EIO;
2708 else
2709 bytes_written = 2;
2710
2711 break;
2712
2713 case 4:
2714 if (get_user(buf32, (u32 __user *)buffer))
2715 errno = -EFAULT;
2716 else if (sisusb_write_memio_long(sisusb,
2717 SISUSB_TYPE_IO,
2718 address, buf32))
2719 errno = -EIO;
2720 else
2721 bytes_written = 4;
2722
2723 break;
2724
2725 default:
2726 errno = -EIO;
2727 }
2728
2729 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MEMBASE &&
2730 (*ppos) < SISUSB_PCI_PSEUDO_MEMBASE + sisusb->vramsize) {
2731
2732 address = (*ppos) -
2733 SISUSB_PCI_PSEUDO_MEMBASE +
2734 SISUSB_PCI_MEMBASE;
2735
2736 /* Write video ram.
2737 * Buffer is copied 1:1, therefore, on big-endian
2738 * machines, the data must be swapped by userland
2739 * in advance (if applicable; no swapping in 8bpp
2740 * mode or if YUV data is being transferred).
2741 */
2742 errno = sisusb_write_mem_bulk(sisusb, address, NULL,
2743 count, buffer, 0, &bytes_written);
2744
2745 if (bytes_written)
2746 errno = bytes_written;
2747
2748 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_MMIOBASE &&
2749 (*ppos) < SISUSB_PCI_PSEUDO_MMIOBASE + SISUSB_PCI_MMIOSIZE) {
2750
2751 address = (*ppos) -
2752 SISUSB_PCI_PSEUDO_MMIOBASE +
2753 SISUSB_PCI_MMIOBASE;
2754
2755 /* Write MMIO.
2756 * Buffer is copied 1:1, therefore, on big-endian
2757 * machines, the data must be swapped by userland
2758 * in advance.
2759 */
2760 errno = sisusb_write_mem_bulk(sisusb, address, NULL,
2761 count, buffer, 0, &bytes_written);
2762
2763 if (bytes_written)
2764 errno = bytes_written;
2765
2766 } else if ((*ppos) >= SISUSB_PCI_PSEUDO_PCIBASE &&
2767 (*ppos) <= SISUSB_PCI_PSEUDO_PCIBASE + SISUSB_PCI_PCONFSIZE) {
2768
2769 if (count != 4) {
2770 mutex_unlock(&sisusb->lock);
2771 return -EINVAL;
2772 }
2773
2774 address = (*ppos) - SISUSB_PCI_PSEUDO_PCIBASE;
2775
2776 /* Write PCI config register.
2777 * Given value expected in machine endianness.
2778 */
2779 if (get_user(buf32, (u32 __user *)buffer))
2780 errno = -EFAULT;
2781 else if (sisusb_write_pci_config(sisusb, address, buf32))
2782 errno = -EIO;
2783 else
2784 bytes_written = 4;
2785
2786
2787 } else {
2788
2789 /* Error */
2790 errno = -EBADFD;
2791
2792 }
2793
2794 (*ppos) += bytes_written;
2795
2796 mutex_unlock(&sisusb->lock);
2797
2798 return errno ? errno : bytes_written;
2799 }
2800
2801 static loff_t
2802 sisusb_lseek(struct file *file, loff_t offset, int orig)
2803 {
2804 struct sisusb_usb_data *sisusb;
2805 loff_t ret;
2806
2807 if (!(sisusb = file->private_data))
2808 return -ENODEV;
2809
2810 mutex_lock(&sisusb->lock);
2811
2812 /* Sanity check */
2813 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2814 mutex_unlock(&sisusb->lock);
2815 return -ENODEV;
2816 }
2817
2818 switch (orig) {
2819 case 0:
2820 file->f_pos = offset;
2821 ret = file->f_pos;
2822 /* never negative, no force_successful_syscall needed */
2823 break;
2824 case 1:
2825 file->f_pos += offset;
2826 ret = file->f_pos;
2827 /* never negative, no force_successful_syscall needed */
2828 break;
2829 default:
2830 /* seeking relative to "end of file" is not supported */
2831 ret = -EINVAL;
2832 }
2833
2834 mutex_unlock(&sisusb->lock);
2835 return ret;
2836 }
2837
2838 static int
2839 sisusb_handle_command(struct sisusb_usb_data *sisusb, struct sisusb_command *y,
2840 unsigned long arg)
2841 {
2842 int retval, port, length;
2843 u32 address;
2844
2845 /* All our commands require the device
2846 * to be initialized.
2847 */
2848 if (!sisusb->devinit)
2849 return -ENODEV;
2850
2851 port = y->data3 -
2852 SISUSB_PCI_PSEUDO_IOPORTBASE +
2853 SISUSB_PCI_IOPORTBASE;
2854
2855 switch (y->operation) {
2856 case SUCMD_GET:
2857 retval = sisusb_getidxreg(sisusb, port,
2858 y->data0, &y->data1);
2859 if (!retval) {
2860 if (copy_to_user((void __user *)arg, y,
2861 sizeof(*y)))
2862 retval = -EFAULT;
2863 }
2864 break;
2865
2866 case SUCMD_SET:
2867 retval = sisusb_setidxreg(sisusb, port,
2868 y->data0, y->data1);
2869 break;
2870
2871 case SUCMD_SETOR:
2872 retval = sisusb_setidxregor(sisusb, port,
2873 y->data0, y->data1);
2874 break;
2875
2876 case SUCMD_SETAND:
2877 retval = sisusb_setidxregand(sisusb, port,
2878 y->data0, y->data1);
2879 break;
2880
2881 case SUCMD_SETANDOR:
2882 retval = sisusb_setidxregandor(sisusb, port,
2883 y->data0, y->data1, y->data2);
2884 break;
2885
2886 case SUCMD_SETMASK:
2887 retval = sisusb_setidxregmask(sisusb, port,
2888 y->data0, y->data1, y->data2);
2889 break;
2890
2891 case SUCMD_CLRSCR:
2892 /* Gfx core must be initialized */
2893 if (!sisusb->gfxinit)
2894 return -ENODEV;
2895
2896 length = (y->data0 << 16) | (y->data1 << 8) | y->data2;
2897 address = y->data3 -
2898 SISUSB_PCI_PSEUDO_MEMBASE +
2899 SISUSB_PCI_MEMBASE;
2900 retval = sisusb_clear_vram(sisusb, address, length);
2901 break;
2902
2903 case SUCMD_HANDLETEXTMODE:
2904 retval = 0;
2905 #ifdef INCL_SISUSB_CON
2906 /* Gfx core must be initialized, SiS_Pr must exist */
2907 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2908 return -ENODEV;
2909
2910 switch (y->data0) {
2911 case 0:
2912 retval = sisusb_reset_text_mode(sisusb, 0);
2913 break;
2914 case 1:
2915 sisusb->textmodedestroyed = 1;
2916 break;
2917 }
2918 #endif
2919 break;
2920
2921 #ifdef INCL_SISUSB_CON
2922 case SUCMD_SETMODE:
2923 /* Gfx core must be initialized, SiS_Pr must exist */
2924 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2925 return -ENODEV;
2926
2927 retval = 0;
2928
2929 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2930 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2931
2932 if (SiSUSBSetMode(sisusb->SiS_Pr, y->data3))
2933 retval = -EINVAL;
2934
2935 break;
2936
2937 case SUCMD_SETVESAMODE:
2938 /* Gfx core must be initialized, SiS_Pr must exist */
2939 if (!sisusb->gfxinit || !sisusb->SiS_Pr)
2940 return -ENODEV;
2941
2942 retval = 0;
2943
2944 sisusb->SiS_Pr->IOAddress = SISUSB_PCI_IOPORTBASE + 0x30;
2945 sisusb->SiS_Pr->sisusb = (void *)sisusb;
2946
2947 if (SiSUSBSetVESAMode(sisusb->SiS_Pr, y->data3))
2948 retval = -EINVAL;
2949
2950 break;
2951 #endif
2952
2953 default:
2954 retval = -EINVAL;
2955 }
2956
2957 if (retval > 0)
2958 retval = -EIO;
2959
2960 return retval;
2961 }
2962
2963 static long
2964 sisusb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2965 {
2966 struct sisusb_usb_data *sisusb;
2967 struct sisusb_info x;
2968 struct sisusb_command y;
2969 long retval = 0;
2970 u32 __user *argp = (u32 __user *)arg;
2971
2972 if (!(sisusb = file->private_data))
2973 return -ENODEV;
2974
2975 mutex_lock(&sisusb->lock);
2976
2977 /* Sanity check */
2978 if (!sisusb->present || !sisusb->ready || !sisusb->sisusb_dev) {
2979 retval = -ENODEV;
2980 goto err_out;
2981 }
2982
2983 switch (cmd) {
2984
2985 case SISUSB_GET_CONFIG_SIZE:
2986
2987 if (put_user(sizeof(x), argp))
2988 retval = -EFAULT;
2989
2990 break;
2991
2992 case SISUSB_GET_CONFIG:
2993
2994 x.sisusb_id = SISUSB_ID;
2995 x.sisusb_version = SISUSB_VERSION;
2996 x.sisusb_revision = SISUSB_REVISION;
2997 x.sisusb_patchlevel = SISUSB_PATCHLEVEL;
2998 x.sisusb_gfxinit = sisusb->gfxinit;
2999 x.sisusb_vrambase = SISUSB_PCI_PSEUDO_MEMBASE;
3000 x.sisusb_mmiobase = SISUSB_PCI_PSEUDO_MMIOBASE;
3001 x.sisusb_iobase = SISUSB_PCI_PSEUDO_IOPORTBASE;
3002 x.sisusb_pcibase = SISUSB_PCI_PSEUDO_PCIBASE;
3003 x.sisusb_vramsize = sisusb->vramsize;
3004 x.sisusb_minor = sisusb->minor;
3005 x.sisusb_fbdevactive= 0;
3006 #ifdef INCL_SISUSB_CON
3007 x.sisusb_conactive = sisusb->haveconsole ? 1 : 0;
3008 #else
3009 x.sisusb_conactive = 0;
3010 #endif
3011 memset(x.sisusb_reserved, 0, sizeof(x.sisusb_reserved));
3012
3013 if (copy_to_user((void __user *)arg, &x, sizeof(x)))
3014 retval = -EFAULT;
3015
3016 break;
3017
3018 case SISUSB_COMMAND:
3019
3020 if (copy_from_user(&y, (void __user *)arg, sizeof(y)))
3021 retval = -EFAULT;
3022 else
3023 retval = sisusb_handle_command(sisusb, &y, arg);
3024
3025 break;
3026
3027 default:
3028 retval = -ENOTTY;
3029 break;
3030 }
3031
3032 err_out:
3033 mutex_unlock(&sisusb->lock);
3034 return retval;
3035 }
3036
3037 #ifdef SISUSB_NEW_CONFIG_COMPAT
3038 static long
3039 sisusb_compat_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
3040 {
3041 long retval;
3042
3043 switch (cmd) {
3044 case SISUSB_GET_CONFIG_SIZE:
3045 case SISUSB_GET_CONFIG:
3046 case SISUSB_COMMAND:
3047 retval = sisusb_ioctl(f, cmd, arg);
3048 return retval;
3049
3050 default:
3051 return -ENOIOCTLCMD;
3052 }
3053 }
3054 #endif
3055
3056 static const struct file_operations usb_sisusb_fops = {
3057 .owner = THIS_MODULE,
3058 .open = sisusb_open,
3059 .release = sisusb_release,
3060 .read = sisusb_read,
3061 .write = sisusb_write,
3062 .llseek = sisusb_lseek,
3063 #ifdef SISUSB_NEW_CONFIG_COMPAT
3064 .compat_ioctl = sisusb_compat_ioctl,
3065 #endif
3066 .unlocked_ioctl = sisusb_ioctl
3067 };
3068
3069 static struct usb_class_driver usb_sisusb_class = {
3070 .name = "sisusbvga%d",
3071 .fops = &usb_sisusb_fops,
3072 .minor_base = SISUSB_MINOR
3073 };
3074
3075 static int sisusb_probe(struct usb_interface *intf,
3076 const struct usb_device_id *id)
3077 {
3078 struct usb_device *dev = interface_to_usbdev(intf);
3079 struct sisusb_usb_data *sisusb;
3080 int retval = 0, i;
3081
3082 dev_info(&dev->dev, "USB2VGA dongle found at address %d\n",
3083 dev->devnum);
3084
3085 /* Allocate memory for our private */
3086 if (!(sisusb = kzalloc(sizeof(*sisusb), GFP_KERNEL))) {
3087 dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate memory for private data\n");
3088 return -ENOMEM;
3089 }
3090 kref_init(&sisusb->kref);
3091
3092 mutex_init(&(sisusb->lock));
3093
3094 /* Register device */
3095 if ((retval = usb_register_dev(intf, &usb_sisusb_class))) {
3096 dev_err(&sisusb->sisusb_dev->dev, "Failed to get a minor for device %d\n",
3097 dev->devnum);
3098 retval = -ENODEV;
3099 goto error_1;
3100 }
3101
3102 sisusb->sisusb_dev = dev;
3103 sisusb->minor = intf->minor;
3104 sisusb->vrambase = SISUSB_PCI_MEMBASE;
3105 sisusb->mmiobase = SISUSB_PCI_MMIOBASE;
3106 sisusb->mmiosize = SISUSB_PCI_MMIOSIZE;
3107 sisusb->ioportbase = SISUSB_PCI_IOPORTBASE;
3108 /* Everything else is zero */
3109
3110 /* Allocate buffers */
3111 sisusb->ibufsize = SISUSB_IBUF_SIZE;
3112 if (!(sisusb->ibuf = kmalloc(SISUSB_IBUF_SIZE, GFP_KERNEL))) {
3113 dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate memory for input buffer");
3114 retval = -ENOMEM;
3115 goto error_2;
3116 }
3117
3118 sisusb->numobufs = 0;
3119 sisusb->obufsize = SISUSB_OBUF_SIZE;
3120 for (i = 0; i < NUMOBUFS; i++) {
3121 if (!(sisusb->obuf[i] = kmalloc(SISUSB_OBUF_SIZE, GFP_KERNEL))) {
3122 if (i == 0) {
3123 dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate memory for output buffer\n");
3124 retval = -ENOMEM;
3125 goto error_3;
3126 }
3127 break;
3128 } else
3129 sisusb->numobufs++;
3130
3131 }
3132
3133 /* Allocate URBs */
3134 if (!(sisusb->sisurbin = usb_alloc_urb(0, GFP_KERNEL))) {
3135 dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate URBs\n");
3136 retval = -ENOMEM;
3137 goto error_3;
3138 }
3139 sisusb->completein = 1;
3140
3141 for (i = 0; i < sisusb->numobufs; i++) {
3142 if (!(sisusb->sisurbout[i] = usb_alloc_urb(0, GFP_KERNEL))) {
3143 dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate URBs\n");
3144 retval = -ENOMEM;
3145 goto error_4;
3146 }
3147 sisusb->urbout_context[i].sisusb = (void *)sisusb;
3148 sisusb->urbout_context[i].urbindex = i;
3149 sisusb->urbstatus[i] = 0;
3150 }
3151
3152 dev_info(&sisusb->sisusb_dev->dev, "Allocated %d output buffers\n", sisusb->numobufs);
3153
3154 #ifdef INCL_SISUSB_CON
3155 /* Allocate our SiS_Pr */
3156 if (!(sisusb->SiS_Pr = kmalloc(sizeof(struct SiS_Private), GFP_KERNEL))) {
3157 dev_err(&sisusb->sisusb_dev->dev, "Failed to allocate SiS_Pr\n");
3158 }
3159 #endif
3160
3161 /* Do remaining init stuff */
3162
3163 init_waitqueue_head(&sisusb->wait_q);
3164
3165 usb_set_intfdata(intf, sisusb);
3166
3167 usb_get_dev(sisusb->sisusb_dev);
3168
3169 sisusb->present = 1;
3170
3171 if (dev->speed == USB_SPEED_HIGH || dev->speed == USB_SPEED_SUPER) {
3172 int initscreen = 1;
3173 #ifdef INCL_SISUSB_CON
3174 if (sisusb_first_vc > 0 &&
3175 sisusb_last_vc > 0 &&
3176 sisusb_first_vc <= sisusb_last_vc &&
3177 sisusb_last_vc <= MAX_NR_CONSOLES)
3178 initscreen = 0;
3179 #endif
3180 if (sisusb_init_gfxdevice(sisusb, initscreen))
3181 dev_err(&sisusb->sisusb_dev->dev, "Failed to early initialize device\n");
3182
3183 } else
3184 dev_info(&sisusb->sisusb_dev->dev, "Not attached to USB 2.0 hub, deferring init\n");
3185
3186 sisusb->ready = 1;
3187
3188 #ifdef SISUSBENDIANTEST
3189 dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST ***\n");
3190 sisusb_testreadwrite(sisusb);
3191 dev_dbg(&sisusb->sisusb_dev->dev, "*** RWTEST END ***\n");
3192 #endif
3193
3194 #ifdef INCL_SISUSB_CON
3195 sisusb_console_init(sisusb, sisusb_first_vc, sisusb_last_vc);
3196 #endif
3197
3198 return 0;
3199
3200 error_4:
3201 sisusb_free_urbs(sisusb);
3202 error_3:
3203 sisusb_free_buffers(sisusb);
3204 error_2:
3205 usb_deregister_dev(intf, &usb_sisusb_class);
3206 error_1:
3207 kfree(sisusb);
3208 return retval;
3209 }
3210
3211 static void sisusb_disconnect(struct usb_interface *intf)
3212 {
3213 struct sisusb_usb_data *sisusb;
3214
3215 /* This should *not* happen */
3216 if (!(sisusb = usb_get_intfdata(intf)))
3217 return;
3218
3219 #ifdef INCL_SISUSB_CON
3220 sisusb_console_exit(sisusb);
3221 #endif
3222
3223 usb_deregister_dev(intf, &usb_sisusb_class);
3224
3225 mutex_lock(&sisusb->lock);
3226
3227 /* Wait for all URBs to complete and kill them in case (MUST do) */
3228 if (!sisusb_wait_all_out_complete(sisusb))
3229 sisusb_kill_all_busy(sisusb);
3230
3231 usb_set_intfdata(intf, NULL);
3232
3233 sisusb->present = 0;
3234 sisusb->ready = 0;
3235
3236 mutex_unlock(&sisusb->lock);
3237
3238 /* decrement our usage count */
3239 kref_put(&sisusb->kref, sisusb_delete);
3240 }
3241
3242 static const struct usb_device_id sisusb_table[] = {
3243 { USB_DEVICE(0x0711, 0x0550) },
3244 { USB_DEVICE(0x0711, 0x0900) },
3245 { USB_DEVICE(0x0711, 0x0901) },
3246 { USB_DEVICE(0x0711, 0x0902) },
3247 { USB_DEVICE(0x0711, 0x0903) },
3248 { USB_DEVICE(0x0711, 0x0918) },
3249 { USB_DEVICE(0x0711, 0x0920) },
3250 { USB_DEVICE(0x182d, 0x021c) },
3251 { USB_DEVICE(0x182d, 0x0269) },
3252 { }
3253 };
3254
3255 MODULE_DEVICE_TABLE (usb, sisusb_table);
3256
3257 static struct usb_driver sisusb_driver = {
3258 .name = "sisusb",
3259 .probe = sisusb_probe,
3260 .disconnect = sisusb_disconnect,
3261 .id_table = sisusb_table,
3262 };
3263
3264 static int __init usb_sisusb_init(void)
3265 {
3266
3267 #ifdef INCL_SISUSB_CON
3268 sisusb_init_concode();
3269 #endif
3270
3271 return usb_register(&sisusb_driver);
3272 }
3273
3274 static void __exit usb_sisusb_exit(void)
3275 {
3276 usb_deregister(&sisusb_driver);
3277 }
3278
3279 module_init(usb_sisusb_init);
3280 module_exit(usb_sisusb_exit);
3281
3282 MODULE_AUTHOR("Thomas Winischhofer <thomas@winischhofer.net>");
3283 MODULE_DESCRIPTION("sisusbvga - Driver for Net2280/SiS315-based USB2VGA dongles");
3284 MODULE_LICENSE("GPL");
3285
Linux with added FPC-III support