1/*
2 * Copyright (c) 2010-2013 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * 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 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Chris Emmons
38 */
39
40#include "base/vnc/vncinput.hh"
41#include "base/bitmap.hh"
42#include "base/output.hh"
43#include "base/trace.hh"
44#include "debug/HDLcd.hh"
45#include "debug/Uart.hh"
46#include "dev/arm/amba_device.hh"
47#include "dev/arm/base_gic.hh"
48#include "dev/arm/hdlcd.hh"
49#include "mem/packet.hh"
50#include "mem/packet_access.hh"
51#include "sim/system.hh"
52
53using std::vector;
54
55
56// initialize hdlcd registers
57HDLcd::HDLcd(const Params *p)
58 : AmbaDmaDevice(p), version(VERSION_RESETV),
59 int_rawstat(0), int_clear(0), int_mask(0), int_status(0),
60 fb_base(0), fb_line_length(0), fb_line_count(0), fb_line_pitch(0),
61 bus_options(BUS_OPTIONS_RESETV),
62 v_sync(0), v_back_porch(0), v_data(0), v_front_porch(0),
63 h_sync(0), h_back_porch(0), h_data(0), h_front_porch(0),
64 polarities(0), command(0), pixel_format(0),
65 red_select(0), green_select(0), blue_select(0),
66 pixelClock(p->pixel_clock), vnc(p->vnc), bmp(NULL), pic(NULL),
67 frameReadStartTime(0),
68 dmaStartAddr(0), dmaCurAddr(0), dmaMaxAddr(0), dmaPendingNum(0),
69 frameUnderrun(false), virtualDisplayBuffer(NULL), pixelBufferSize(0),
70 pixelIndex(0), doUpdateParams(false), frameUnderway(false),
71 dmaBytesInFlight(0),
72 startFrameEvent(this), endFrameEvent(this), renderPixelEvent(this),
73 fillPixelBufferEvent(this), intEvent(this),
74 dmaDoneEventAll(MAX_OUTSTANDING_DMA_REQ_CAPACITY, this),
75 dmaDoneEventFree(MAX_OUTSTANDING_DMA_REQ_CAPACITY)
76{
77 pioSize = 0xFFFF;
78
79 for (int i = 0; i < MAX_OUTSTANDING_DMA_REQ_CAPACITY; ++i)
80 dmaDoneEventFree[i] = &dmaDoneEventAll[i];
81
82 if (vnc)
83 vnc->setFramebufferAddr(NULL);
84}
85
86HDLcd::~HDLcd()
87{
88 if (virtualDisplayBuffer)
89 delete [] virtualDisplayBuffer;
90}
91
92// read registers and frame buffer
93Tick
94HDLcd::read(PacketPtr pkt)
95{
96 uint32_t data = 0;
97 const Addr daddr = pkt->getAddr() - pioAddr;
98
99 DPRINTF(HDLcd, "read register BASE+0x%04x size=%d\n", daddr,
100 pkt->getSize());
101
102 assert(pkt->getAddr() >= pioAddr &&
103 pkt->getAddr() < pioAddr + pioSize &&
104 pkt->getSize() == 4);
105
106 pkt->allocate();
107
108 switch (daddr) {
109 case Version:
110 data = version;
111 break;
112 case Int_RawStat:
113 data = int_rawstat;
114 break;
115 case Int_Clear:
116 panic("HDLCD INT_CLEAR register is Write-Only\n");
117 break;
118 case Int_Mask:
119 data = int_mask;
120 break;
121 case Int_Status:
122 data = int_status;
123 break;
124 case Fb_Base:
125 data = fb_base;
126 break;
127 case Fb_Line_Length:
128 data = fb_line_length;
129 break;
130 case Fb_Line_Count:
131 data = fb_line_count;
132 break;
133 case Fb_Line_Pitch:
134 data = fb_line_pitch;
135 break;
136 case Bus_Options:
137 data = bus_options;
138 break;
139 case V_Sync:
140 data = v_sync;
141 break;
142 case V_Back_Porch:
143 data = v_back_porch;
144 break;
145 case V_Data:
146 data = v_data;
147 break;
148 case V_Front_Porch:
149 data = v_front_porch;
150 break;
151 case H_Sync:
152 data = h_sync;
153 break;
154 case H_Back_Porch:
155 data = h_back_porch;
156 break;
157 case H_Data:
158 data = h_data;
159 break;
160 case H_Front_Porch:
161 data = h_front_porch;
162 break;
163 case Polarities:
164 data = polarities;
165 break;
166 case Command:
167 data = command;
168 break;
169 case Pixel_Format:
170 data = pixel_format;
171 break;
172 case Red_Select:
173 data = red_select;
174 break;
175 case Green_Select:
176 data = green_select;
177 break;
178 case Blue_Select:
179 data = blue_select;
180 break;
181 default:
182 panic("Tried to read HDLCD register that doesn't exist\n", daddr);
183 break;
184 }
185
186 pkt->set<uint32_t>(data);
187 pkt->makeAtomicResponse();
188 return pioDelay;
189}
190
191// write registers and frame buffer
192Tick
193HDLcd::write(PacketPtr pkt)
194{
195 assert(pkt->getAddr() >= pioAddr &&
196 pkt->getAddr() < pioAddr + pioSize &&
197 pkt->getSize() == 4);
198
199 const uint32_t data = pkt->get<uint32_t>();
200 const Addr daddr = pkt->getAddr() - pioAddr;
201
202 DPRINTF(HDLcd, "write register BASE+%0x04x <= 0x%08x\n", daddr,
203 pkt->get<uint32_t>());
204
205 switch (daddr) {
206 case Version:
207 panic("HDLCD VERSION register is read-Only\n");
208 break;
209 case Int_RawStat:
210 int_rawstat = data;
211 break;
212 case Int_Clear:
213 int_clear = data;
214 break;
215 case Int_Mask:
216 int_mask = data;
217 break;
218 case Int_Status:
219 panic("HDLCD INT_STATUS register is read-Only\n");
220 break;
221 case Fb_Base:
222 fb_base = data;
223 DPRINTF(HDLcd, "HDLCD Frame Buffer located at addr 0x%08x\n", fb_base);
224 break;
225 case Fb_Line_Length:
226 fb_line_length = data;
227 DPRINTF(HDLcd, "HDLCD res = %d x %d\n", width(), height());
228 break;
229 case Fb_Line_Count:
230 fb_line_count = data;
231 DPRINTF(HDLcd, "HDLCD res = %d x %d\n", width(), height());
232 break;
233 case Fb_Line_Pitch:
234 fb_line_pitch = data;
235 break;
236 case Bus_Options: {
237 BusOptsReg old_bus_options;
238 old_bus_options = bus_options;
239 bus_options = data;
240 if (bus_options.max_outstanding != old_bus_options.max_outstanding)
241 DPRINTF(HDLcd,
242 "Changing HDLcd outstanding dma transactions from %d to %d\n",
243 old_bus_options.max_outstanding, bus_options.max_outstanding);
244 if (bus_options.burst_len != old_bus_options.burst_len)
245 DPRINTF(HDLcd,
246 "Changing HDLcd dma burst length from %d bytes to %d bytes\n",
247 old_bus_options.burst_len, bus_options.burst_len); }
248 break;
249 case V_Sync:
250 v_sync = data;
251 break;
252 case V_Back_Porch:
253 v_back_porch = data;
254 break;
255 case V_Data:
256 v_data = data;
257 break;
258 case V_Front_Porch:
259 v_front_porch = data;
260 break;
261 case H_Sync:
262 h_sync = data;
263 break;
264 case H_Back_Porch:
265 h_back_porch = data;
266 break;
267 case H_Data:
268 h_data = data;
269 break;
270 case H_Front_Porch:
271 h_front_porch = data;
272 break;
273 case Polarities:
274 polarities = data;
275 break;
276 case Command: {
277 CommandReg new_command;
278 new_command = data;
279 if (new_command.enable != command.enable) {
280 DPRINTF(HDLcd, "HDLCD switched %s\n",
281 new_command.enable==0 ? "off" : "on");
282 if (new_command.enable) {
283 doUpdateParams = true;
284 if (!frameUnderway) {
285 schedule(startFrameEvent, clockEdge());
286 }
287 }
288 }
289 command = new_command; }
290 break;
291 case Pixel_Format:
292 pixel_format = data;
293 DPRINTF(HDLcd, "HDLCD res = %d x %d\n", width(), height());
294 DPRINTF(HDLcd, "HDLCD bytes per pixel = %d\n", bytesPerPixel());
295 DPRINTF(HDLcd, "HDLCD endianness = %s\n",
296 pixel_format.big_endian ? "big" : "little");
297 break;
298 case Red_Select:
299 red_select = data;
300 break;
301 case Green_Select:
302 green_select = data;
303 break;
304 case Blue_Select:
305 blue_select = data;
306 break;
307 default:
308 panic("Tried to write HDLCD register that doesn't exist\n", daddr);
309 break;
310 }
311
312 pkt->makeAtomicResponse();
313 return pioDelay;
314}
315
316void
317HDLcd::updateVideoParams(bool unserializing = false)
318{
319 const uint16_t bpp = bytesPerPixel() << 3;
320 const size_t buffer_size = bytesPerPixel() * width() * height();
321
322 // updating these parameters while LCD is enabled is not supported
323 if (frameUnderway && !unserializing)
324 panic("Attempting to change some HDLCD parameters while the controller"
325 " is active is not allowed");
326
327 // resize the virtualDisplayBuffer unless we are unserializing - it may
328 // have changed size
329 // there must be no outstanding DMA transactions for this to work
330 if (!unserializing) {
331 assert(dmaPendingNum == 0);
332 if (virtualDisplayBuffer)
333 delete [] virtualDisplayBuffer;
334 virtualDisplayBuffer = new uint8_t[buffer_size];
335 memset(virtualDisplayBuffer, 0, buffer_size);
336 }
337
338 assert(virtualDisplayBuffer);
339 if (vnc)
340 vnc->setFramebufferAddr(virtualDisplayBuffer);
341
342 if (bmp)
343 delete bmp;
344
345 DPRINTF(HDLcd, "bpp = %d\n", bpp);
346 DPRINTF(HDLcd, "display size = %d x %d\n", width(), height());
347#if TRACING_ON
348 const size_t totalLinesPerFrame = v_back_porch.val + 1 +
349 v_data.val + 1 +
350 v_front_porch.val + 1 +
351 v_sync.val + 1;
352 const double fps = (double)SimClock::Frequency /
353 (double)(PClksPerLine() * totalLinesPerFrame * pixelClock);
354#endif
355 DPRINTF(HDLcd, "simulated refresh rate ~ %.1ffps generating ~ %.1fMB/s "
356 "traffic ([%.1fMHz, T=%d sim clocks] pclk, %d bpp => %.1fMB/s peak requirement)\n",
357 fps,
358 fps * buffer_size / 1024 / 1024,
359 (double)SimClock::Frequency / pixelClock / 1000000.0,
360 pixelClock,
361 bpp,
362 (double)(SimClock::Frequency / pixelClock * (bpp / 8)) / 1024 / 1024);
363
364 if (pixel_format.big_endian)
365 panic("Big Endian pixel format not implemented by HDLcd controller");
366
367 if (vnc) {
368 if ((bpp == 24) &&
369 (red_select.size == 8) &&
370 (blue_select.size == 8) &&
371 (green_select.size == 8) &&
372 (green_select.offset == 8)) {
373 if ((blue_select.offset == 0) &&
374 (red_select.offset == 16)) {
375 vnc->setFrameBufferParams(VideoConvert::rgb8888, width(),
376 height());
377 bmp = new Bitmap(VideoConvert::rgb8888, width(), height(),
378 virtualDisplayBuffer);
379 DPRINTF(HDLcd, "color mode: rgb888\n");
380 } else if ((red_select.offset == 0) &&
381 (blue_select.offset == 16)) {
382 vnc->setFrameBufferParams(VideoConvert::bgr8888, width(),
383 height());
384 bmp = new Bitmap(VideoConvert::bgr8888, width(), height(),
385 virtualDisplayBuffer);
386 DPRINTF(HDLcd, "color mode: bgr888\n");
387 }
388 } else if ((bpp == 16) &&
389 (red_select.size == 5) &&
390 (blue_select.size == 5) &&
391 (green_select.size == 6) &&
392 (green_select.offset == 5)) {
393 if ((blue_select.offset == 0) &&
394 (red_select.offset == 11)) {
395 vnc->setFrameBufferParams(VideoConvert::rgb565, width(),
396 height());
397 bmp = new Bitmap(VideoConvert::rgb565, width(), height(),
398 virtualDisplayBuffer);
399 DPRINTF(HDLcd, "color mode: rgb565\n");
400 } else if ((red_select.offset == 0) &&
401 (blue_select.offset == 11)) {
402 vnc->setFrameBufferParams(VideoConvert::bgr565, width(),
403 height());
404 bmp = new Bitmap(VideoConvert::bgr565, width(), height(),
405 virtualDisplayBuffer);
406 DPRINTF(HDLcd, "color mode: bgr565\n");
407 }
408 } else {
409 DPRINTF(HDLcd, "color mode: undefined\n");
410 panic("Unimplemented video mode\n");
411 }
412 }
413}
414
415void
416HDLcd::startFrame()
417{
418 // 0. Check that we are in the appropriate state
419 assert(!frameUnderway);
420 if (!command.enable)
421 return;
422 DPRINTF(HDLcd, "Frame read started\n");
423 if (doUpdateParams) {
424 updateVideoParams();
425 doUpdateParams = false;
426 }
427 frameUnderway = true;
428 assert(virtualDisplayBuffer);
429 assert(pixelBufferSize == 0);
430 assert(dmaBytesInFlight == 0);
431 assert(dmaPendingNum == 0);
432 assert(dmaDoneEventFree.size() == dmaDoneEventAll.size());
433 assert(!renderPixelEvent.scheduled());
434 // currently only support positive line pitches equal to the line length
435 assert(width() * bytesPerPixel() == fb_line_pitch);
436
437 // 1. Start DMA'ing the frame; subsequent transactions created as we go
438 dmaCurAddr = dmaStartAddr = fb_base;
439 dmaMaxAddr = static_cast<Addr>(width() * height() * bytesPerPixel()) +
440 dmaCurAddr;
441 frameReadStartTime = curTick();
442 pixelIndex = 0;
443 frameUnderrun = false;
444 fillPixelBuffer();
445
446 // 2. Schedule first pixelclock read; subsequent reads generated as we go
447 Tick firstPixelReadTick = curTick() + pixelClock * (
448 PClksPerLine() * (v_sync.val + 1 +
449 v_back_porch.val + 1) +
450 h_sync.val + 1 +
451 h_back_porch.val + 1);
452 schedule(renderPixelEvent, firstPixelReadTick);
453}
454
455void
456HDLcd::fillPixelBuffer()
457{
458 // - am I under the LCD dma transaction total?
459 // - do I have more data to transfer?
460 // - have I not yet underrun for this frame?
461 // - is there room to put the data in the pixel buffer including any
462 // outstanding dma transfers in flight?
463 while ((dmaPendingNum < maxOutstandingDma()) &&
464 (dmaMaxAddr > dmaCurAddr) &&
465 !frameUnderrun &&
466 bytesFreeInPixelBuffer() > dmaBurstLength() * AXI_PORT_WIDTH) {
467 // try largest transaction size allowed first but switch to smaller
468 // sizes for trailing bytes
469 size_t transaction_size = dmaBurstLength() * AXI_PORT_WIDTH;
470 while (transaction_size > (dmaMaxAddr - dmaCurAddr))
471 transaction_size >>= 1;
472 assert(transaction_size > 0);
473
474 // concurrent dma reads need different dma done events
475 // due to assertion in scheduling state
476 ++dmaPendingNum;
477
478 assert(!dmaDoneEventFree.empty());
479 DmaDoneEvent *event(dmaDoneEventFree.back());
480 dmaDoneEventFree.pop_back();
481 assert(event);
482 assert(!event->scheduled());
483
484 // We use a uncachable request here because the requests from the CPU
485 // will be uncacheable as well. If we have uncacheable and cacheable
486 // requests in the memory system for the same address it won't be
487 // pleased
488 event->setTransactionSize(transaction_size);
489 dmaPort.dmaAction(MemCmd::ReadReq, dmaCurAddr, transaction_size, event,
490 virtualDisplayBuffer + dmaCurAddr - dmaStartAddr,
491 0, Request::UNCACHEABLE);
492 dmaCurAddr += transaction_size;
493 dmaBytesInFlight += transaction_size;
494 }
495}
496
497void
498HDLcd::renderPixel()
499{
500 // try to handle multiple pixels at a time; doing so reduces the accuracy
501 // of the underrun detection but lowers simulation overhead
502 const size_t count = 32;
503 assert(width() % count == 0); // not set up to handle trailing pixels
504
505 // have we underrun on this frame anytime before?
506 if (frameUnderrun) {
507 // the LCD controller gives up on a frame if an underrun occurs and
508 // resumes regular operation on the next frame
509 pixelBufferSize = 0;
510 } else {
511 // did we underrun on this set of pixels?
512 if (pixelBufferSize < bytesPerPixel() * count) {
513 warn("HDLcd controller buffer underrun\n");
514 frameUnderrun = true;
515 int_rawstat.underrun = 1;
516 if (!intEvent.scheduled())
517 schedule(intEvent, clockEdge());
518 } else {
519 // emulate the pixel read from the internal buffer
520 pixelBufferSize -= bytesPerPixel() * count;
521 }
522 }
523
524 // the DMA may have previously stalled due to the buffer being full;
525 // give it a kick; it knows not to fill if at end of frame, underrun, etc
526 if (!fillPixelBufferEvent.scheduled())
527 schedule(fillPixelBufferEvent, clockEdge());
528
529 // schedule the next pixel read according to where it is in the frame
530 pixelIndex += count;
531 assert(pixelIndex <= width() * height());
532 size_t x = pixelIndex % width();
533 Tick nextEventTick = curTick();
534 if (x == 0) {
535 // start of new line
536 nextEventTick += pixelClock * ((h_front_porch.val + 1) +
537 (h_back_porch.val + 1) +
538 (h_sync.val + 1));
539 if (pixelIndex == width() * height()) {
540 // end of frame
541 nextEventTick += PClksPerLine() * (v_front_porch.val + 1) *
542 pixelClock;
543 schedule(endFrameEvent, nextEventTick);
544 return;
545 }
546 } else {
547 nextEventTick += pixelClock * count;
548 }
549
550 schedule(renderPixelEvent, nextEventTick);
551}
552
553void
554HDLcd::endFrame() {
555 assert(pixelBufferSize == 0);
556 assert(dmaPendingNum == 0);
557 assert(dmaBytesInFlight == 0);
558 assert(dmaDoneEventFree.size() == dmaDoneEventAll.size());
559
560 if (vnc)
561 vnc->setDirty();
562
563 if (!pic)
564 pic = simout.create(csprintf("%s.framebuffer.bmp", sys->name()), true);
565
566 assert(bmp);
567 assert(pic);
568 pic->seekp(0);
569 bmp->write(pic);
570
571 // start the next frame
572 frameUnderway = false;
573 startFrame();
574}
575
576void
577HDLcd::dmaDone(DmaDoneEvent *event)
578{
579 const size_t transactionLength = event->getTransactionSize();
580 assert(pixelBufferSize + transactionLength < PIXEL_BUFFER_CAPACITY);
581 assert(dmaCurAddr <= dmaMaxAddr);
582
583 dmaDoneEventFree.push_back(event);
584 --dmaPendingNum;
585 assert(MAX_OUTSTANDING_DMA_REQ_CAPACITY - dmaDoneEventFree.size() ==
586 dmaPendingNum);
587
588 // add the data to the pixel buffer
589 dmaBytesInFlight -= transactionLength;
590 pixelBufferSize += transactionLength;
591
592 // schedule another dma transaction if:
593 // - we're not done reading the frame
594 // - there is sufficient room in the pixel buffer for another transaction
595 // - another fillPixelBufferEvent is not already scheduled
596 const size_t targetTransSize = dmaBurstLength() * AXI_PORT_WIDTH;
597 if ((dmaCurAddr < dmaMaxAddr) &&
598 (bytesFreeInPixelBuffer() + targetTransSize < PIXEL_BUFFER_CAPACITY) &&
599 !fillPixelBufferEvent.scheduled()) {
600 schedule(fillPixelBufferEvent, clockEdge());
601 }
602}
603
604void
605HDLcd::serialize(std::ostream &os)
606{
607 DPRINTF(HDLcd, "Serializing ARM HDLCD\n");
608
609 const uint32_t version_serial = version;
610 SERIALIZE_SCALAR(version_serial);
611 const uint32_t int_rawstat_serial = int_rawstat;
612 SERIALIZE_SCALAR(int_rawstat_serial);
613 const uint32_t int_clear_serial = int_clear;
614 SERIALIZE_SCALAR(int_clear_serial);
615 const uint32_t int_mask_serial = int_mask;
616 SERIALIZE_SCALAR(int_mask_serial);
617 const uint32_t int_status_serial = int_status;
618 SERIALIZE_SCALAR(int_status_serial);
619
620 SERIALIZE_SCALAR(fb_base);
621 SERIALIZE_SCALAR(fb_line_length);
622
623 const uint32_t fb_line_count_serial = fb_line_count;
624 SERIALIZE_SCALAR(fb_line_count_serial);
625
626 SERIALIZE_SCALAR(fb_line_pitch);
627
628 const uint32_t bus_options_serial = bus_options;
629 SERIALIZE_SCALAR(bus_options_serial);
630 const uint32_t v_sync_serial = v_sync;
631 SERIALIZE_SCALAR(v_sync_serial);
632 const uint32_t v_back_porch_serial = v_back_porch;
633 SERIALIZE_SCALAR(v_back_porch_serial);
634 const uint32_t v_data_serial = v_data;
635 SERIALIZE_SCALAR(v_data_serial);
636 const uint32_t v_front_porch_serial = v_front_porch;
637 SERIALIZE_SCALAR(v_front_porch_serial);
638 const uint32_t h_sync_serial = h_sync;
639 SERIALIZE_SCALAR(h_sync_serial);
640 const uint32_t h_back_porch_serial = h_back_porch;
641 SERIALIZE_SCALAR(h_back_porch_serial);
642 const uint32_t h_data_serial = h_data;
643 SERIALIZE_SCALAR(h_data_serial);
644 const uint32_t h_front_porch_serial = h_front_porch;
645 SERIALIZE_SCALAR(h_front_porch_serial);
646 const uint32_t polarities_serial = polarities;
647 SERIALIZE_SCALAR(polarities_serial);
648 const uint32_t command_serial = command;
649 SERIALIZE_SCALAR(command_serial);
650 const uint32_t pixel_format_serial = pixel_format;
651 SERIALIZE_SCALAR(pixel_format_serial);
652 const uint32_t red_select_serial = red_select;
653 SERIALIZE_SCALAR(red_select_serial);
654 const uint32_t green_select_serial = green_select;
655 SERIALIZE_SCALAR(green_select_serial);
656 const uint32_t blue_select_serial = blue_select;
657 SERIALIZE_SCALAR(blue_select_serial);
658
659 SERIALIZE_SCALAR(frameReadStartTime);
660 SERIALIZE_SCALAR(dmaStartAddr);
661 SERIALIZE_SCALAR(dmaCurAddr);
662 SERIALIZE_SCALAR(dmaMaxAddr);
663 SERIALIZE_SCALAR(dmaPendingNum);
664 SERIALIZE_SCALAR(frameUnderrun);
665
666 const size_t buffer_size = bytesPerPixel() * width() * height();
667 SERIALIZE_ARRAY(virtualDisplayBuffer, buffer_size);
668
669 SERIALIZE_SCALAR(pixelBufferSize);
670 SERIALIZE_SCALAR(pixelIndex);
671 SERIALIZE_SCALAR(doUpdateParams);
672 SERIALIZE_SCALAR(frameUnderway);
673 SERIALIZE_SCALAR(dmaBytesInFlight);
674
675 Tick start_event_time = 0;
676 Tick end_event_time = 0;
677 Tick render_pixel_event_time = 0;
678 Tick fill_pixel_buffer_event_time = 0;
679 Tick int_event_time = 0;
680 if (startFrameEvent.scheduled())
681 start_event_time = startFrameEvent.when();
682 if (endFrameEvent.scheduled())
683 end_event_time = endFrameEvent.when();
684 if (renderPixelEvent.scheduled())
685 render_pixel_event_time = renderPixelEvent.when();
686 if (fillPixelBufferEvent.scheduled())
687 fill_pixel_buffer_event_time = fillPixelBufferEvent.when();
688 if (intEvent.scheduled())
689 int_event_time = intEvent.when();
690 SERIALIZE_SCALAR(start_event_time);
691 SERIALIZE_SCALAR(end_event_time);
692 SERIALIZE_SCALAR(render_pixel_event_time);
693 SERIALIZE_SCALAR(fill_pixel_buffer_event_time);
694 SERIALIZE_SCALAR(int_event_time);
695
696 vector<Tick> dma_done_event_tick(MAX_OUTSTANDING_DMA_REQ_CAPACITY);
697 vector<size_t> dma_done_event_burst_len(MAX_OUTSTANDING_DMA_REQ_CAPACITY);
698 for (int x = 0; x < MAX_OUTSTANDING_DMA_REQ_CAPACITY; ++x) {
699 dma_done_event_tick[x] = dmaDoneEventAll[x].scheduled() ?
700 dmaDoneEventAll[x].when() : 0;
701 dma_done_event_burst_len[x] = dmaDoneEventAll[x].scheduled() ?
702 dmaDoneEventAll[x].getTransactionSize() : 0;
703 }
704 arrayParamOut(os, "dma_done_event_tick", dma_done_event_tick);
705 arrayParamOut(os, "dma_done_event_burst_length", dma_done_event_burst_len);
706}
707
708void
709HDLcd::unserialize(Checkpoint *cp, const std::string &section)
710{
711 uint32_t version_serial, int_rawstat_serial, int_clear_serial,
712 int_mask_serial, int_status_serial, fb_line_count_serial,
713 bus_options_serial, v_sync_serial, v_back_porch_serial,
714 v_data_serial, v_front_porch_serial, h_sync_serial,
715 h_back_porch_serial, h_data_serial, h_front_porch_serial,
716 polarities_serial, command_serial, pixel_format_serial,
717 red_select_serial, green_select_serial, blue_select_serial;
718
719 DPRINTF(HDLcd, "Unserializing ARM HDLCD\n");
720
721 UNSERIALIZE_SCALAR(version_serial);
722 version = version_serial;
723 UNSERIALIZE_SCALAR(int_rawstat_serial);
724 int_rawstat = int_rawstat_serial;
725 UNSERIALIZE_SCALAR(int_clear_serial);
726 int_clear = int_clear_serial;
727 UNSERIALIZE_SCALAR(int_mask_serial);
728 int_mask = int_mask_serial;
729 UNSERIALIZE_SCALAR(int_status_serial);
730 int_status = int_status_serial;
731
732 UNSERIALIZE_SCALAR(fb_base);
733 UNSERIALIZE_SCALAR(fb_line_length);
734
735 UNSERIALIZE_SCALAR(fb_line_count_serial);
736 fb_line_count = fb_line_count_serial;
737
738 UNSERIALIZE_SCALAR(fb_line_pitch);
739
740 UNSERIALIZE_SCALAR(bus_options_serial);
741 bus_options = bus_options_serial;
742 UNSERIALIZE_SCALAR(v_sync_serial);
743 v_sync = v_sync_serial;
744 UNSERIALIZE_SCALAR(v_back_porch_serial);
745 v_back_porch = v_back_porch_serial;
746 UNSERIALIZE_SCALAR(v_data_serial);
747 v_data = v_data_serial;
748 UNSERIALIZE_SCALAR(v_front_porch_serial);
749 v_front_porch = v_front_porch_serial;
750 UNSERIALIZE_SCALAR(h_sync_serial);
751 h_sync = h_sync_serial;
752 UNSERIALIZE_SCALAR(h_back_porch_serial);
753 h_back_porch = h_back_porch_serial;
754 UNSERIALIZE_SCALAR(h_data_serial);
755 h_data = h_data_serial;
756 UNSERIALIZE_SCALAR(h_front_porch_serial);
757 h_front_porch = h_front_porch_serial;
758 UNSERIALIZE_SCALAR(polarities_serial);
759 polarities = polarities_serial;
760 UNSERIALIZE_SCALAR(command_serial);
761 command = command_serial;
762 UNSERIALIZE_SCALAR(pixel_format_serial);
763 pixel_format = pixel_format_serial;
764 UNSERIALIZE_SCALAR(red_select_serial);
765 red_select = red_select_serial;
766 UNSERIALIZE_SCALAR(green_select_serial);
767 green_select = green_select_serial;
768 UNSERIALIZE_SCALAR(blue_select_serial);
769 blue_select = blue_select_serial;
770
771 UNSERIALIZE_SCALAR(frameReadStartTime);
772 UNSERIALIZE_SCALAR(dmaStartAddr);
773 UNSERIALIZE_SCALAR(dmaCurAddr);
774 UNSERIALIZE_SCALAR(dmaMaxAddr);
775 UNSERIALIZE_SCALAR(dmaPendingNum);
776 UNSERIALIZE_SCALAR(frameUnderrun);
777 UNSERIALIZE_SCALAR(dmaBytesInFlight);
778
779 const size_t buffer_size = bytesPerPixel() * width() * height();
780 virtualDisplayBuffer = new uint8_t[buffer_size];
781 UNSERIALIZE_ARRAY(virtualDisplayBuffer, buffer_size);
782
783 UNSERIALIZE_SCALAR(pixelBufferSize);
784 UNSERIALIZE_SCALAR(pixelIndex);
785 UNSERIALIZE_SCALAR(doUpdateParams);
786 UNSERIALIZE_SCALAR(frameUnderway);
787
788 Tick start_event_time = 0;
789 Tick end_event_time = 0;
790 Tick render_pixel_event_time = 0;
791 Tick fill_pixel_buffer_event_time = 0;
792 Tick int_event_time = 0;
793 UNSERIALIZE_SCALAR(start_event_time);
794 UNSERIALIZE_SCALAR(end_event_time);
795 UNSERIALIZE_SCALAR(render_pixel_event_time);
796 UNSERIALIZE_SCALAR(fill_pixel_buffer_event_time);
797 UNSERIALIZE_SCALAR(int_event_time);
798 if (start_event_time)
799 schedule(startFrameEvent, start_event_time);
800 if (end_event_time)
801 schedule(endFrameEvent, end_event_time);
802 if (render_pixel_event_time)
803 schedule(renderPixelEvent, render_pixel_event_time);
804 if (fill_pixel_buffer_event_time)
805 schedule(fillPixelBufferEvent, fill_pixel_buffer_event_time);
806 if (int_event_time)
807 schedule(intEvent, int_event_time);
808
809 vector<Tick> dma_done_event_tick(MAX_OUTSTANDING_DMA_REQ_CAPACITY);
810 vector<Tick> dma_done_event_burst_len(MAX_OUTSTANDING_DMA_REQ_CAPACITY);
811 arrayParamIn(cp, section, "dma_done_event_tick", dma_done_event_tick);
812 arrayParamIn(cp, section, "dma_done_event_burst_length", dma_done_event_burst_len);
813 dmaDoneEventFree.clear();
814 for (int x = 0; x < MAX_OUTSTANDING_DMA_REQ_CAPACITY; ++x) {
815 if (dma_done_event_tick[x]) {
816 dmaDoneEventAll[x].setTransactionSize(dma_done_event_burst_len[x]);
817 schedule(dmaDoneEventAll[x], dma_done_event_tick[x]);
818 } else
819 dmaDoneEventFree.push_back(&dmaDoneEventAll[x]);
820 }
821 assert(MAX_OUTSTANDING_DMA_REQ_CAPACITY - dmaDoneEventFree.size() == dmaPendingNum);
822
823 if (frameUnderway) {
824 updateVideoParams(true);
825 if (vnc)
826 vnc->setDirty();
827 }
828}
829
830void
831HDLcd::generateInterrupt()
832{
833 int_status = int_rawstat & int_mask;
834 DPRINTF(HDLcd, "Generate Interrupt: int_rawstat=0x%08x int_mask=0x%08x "
835 "int_status=0x%08x\n",
836 (uint32_t)int_rawstat, (uint32_t)int_mask, (uint32_t)int_status);
837
838 if (int_status != 0) {
839 gic->sendInt(intNum);
840 DPRINTF(HDLcd, " -- Generated\n");
841 }
842}
843
844AddrRangeList
845HDLcd::getAddrRanges() const
846{
847 AddrRangeList ranges;
848 ranges.push_back(RangeSize(pioAddr, pioSize));
849 return ranges;
850}
851
852HDLcd *
853HDLcdParams::create()
854{
855 return new HDLcd(this);
856}