1 // PiStorm RTG driver, VBCC edition.
2 // Based in part on the ZZ9000 RTG driver.
4 #include <proto/exec.h>
5 #include <proto/expansion.h>
7 #include <proto/intuition.h>
8 #include <exec/types.h>
9 #include <exec/memory.h>
10 #include <exec/libraries.h>
11 #include <exec/execbase.h>
12 #include <exec/resident.h>
13 #include <exec/initializers.h>
14 #include <clib/debug_protos.h>
17 #include "boardinfo.h"
19 #define WRITESHORT(cmd, val) *(unsigned short *)((unsigned int)(b->RegisterBase)+cmd) = val;
20 #define WRITELONG(cmd, val) *(unsigned int *)((unsigned int)(b->RegisterBase)+cmd) = val;
21 #define WRITEBYTE(cmd, val) *(unsigned char *)((unsigned int)(b->RegisterBase)+cmd) = val;
23 #define CARD_OFFSET 0x70000000
24 #define CARD_REGSIZE 0x00010000
26 #define CARD_MEMSIZE 0x02000000
28 // "Register" offsets for sending data to the RTG.
65 const unsigned short rgbf_to_rtg[16] = {
71 RTGFMT_RGB555, // 0x05
76 RTGFMT_RBG565, // 0x0A
77 RTGFMT_RGB555, // 0x0B
79 RTGFMT_RGB555, // 0x0D
85 struct Library libNode;
87 struct ExecBase* sysBase;
88 struct ExpansionBase* expansionBase;
91 int FindCard(__REGA0(struct BoardInfo* b));
92 int InitCard(__REGA0(struct BoardInfo* b));
94 void SetDAC (__REGA0(struct BoardInfo *b), __REGD7(RGBFTYPE format));
95 void SetGC (__REGA0(struct BoardInfo *b), __REGA1(struct ModeInfo *mode_info), __REGD0(BOOL border));
96 void SetColorArray (__REGA0(struct BoardInfo *b), __REGD0(UWORD start), __REGD1(UWORD num));
97 void SetPanning (__REGA0(struct BoardInfo *b), __REGA1(UBYTE *addr), __REGD0(UWORD width), __REGD1(WORD x_offset), __REGD2(WORD y_offset), __REGD7(RGBFTYPE format));
98 UWORD SetSwitch (__REGA0(struct BoardInfo *b), __REGD0(UWORD enabled));
99 UWORD SetDisplay (__REGA0(struct BoardInfo *b), __REGD0(UWORD enabled));
101 UWORD CalculateBytesPerRow (__REGA0(struct BoardInfo *b), __REGD0(UWORD width), __REGD7(RGBFTYPE format));
102 APTR CalculateMemory (__REGA0(struct BoardInfo *b), __REGA1(unsigned int addr), __REGD7(RGBFTYPE format));
103 ULONG GetCompatibleFormats (__REGA0(struct BoardInfo *b), __REGD7(RGBFTYPE format));
105 LONG ResolvePixelClock (__REGA0(struct BoardInfo *b), __REGA1(struct ModeInfo *mode_info), __REGD0(ULONG pixel_clock), __REGD7(RGBFTYPE format));
106 ULONG GetPixelClock (__REGA0(struct BoardInfo *b), __REGA1(struct ModeInfo *mode_info), __REGD0(ULONG index), __REGD7(RGBFTYPE format));
107 void SetClock (__REGA0(struct BoardInfo *b));
109 void SetMemoryMode (__REGA0(struct BoardInfo *b), __REGD7(RGBFTYPE format));
110 void SetWriteMask (__REGA0(struct BoardInfo *b), __REGD0(UBYTE mask));
111 void SetClearMask (__REGA0(struct BoardInfo *b), __REGD0(UBYTE mask));
112 void SetReadPlane (__REGA0(struct BoardInfo *b), __REGD0(UBYTE plane));
114 void WaitVerticalSync (__REGA0(struct BoardInfo *b), __REGD0(BOOL toggle));
116 void FillRect (__REGA0(struct BoardInfo *b), __REGA1(struct RenderInfo *r), __REGD0(WORD x), __REGD1(WORD y), __REGD2(WORD w), __REGD3(WORD h), __REGD4(ULONG color), __REGD5(UBYTE mask), __REGD7(RGBFTYPE format));
118 static ULONG LibStart(void) {
122 static const char LibraryName[] = "PiRTG.card";
123 static const char LibraryID[] = "$VER: PiRTG.card 0.01\r\n";
125 __saveds struct GFXBase* OpenLib(__REGA6(struct GFXBase *gfxbase));
126 BPTR __saveds CloseLib(__REGA6(struct GFXBase *gfxbase));
127 BPTR __saveds ExpungeLib(__REGA6(struct GFXBase *exb));
128 ULONG ExtFuncLib(void);
129 __saveds struct GFXBase* InitLib(__REGA6(struct ExecBase *sysbase),
130 __REGA0(BPTR seglist),
131 __REGD0(struct GFXBase *exb));
133 static const APTR FuncTab[] = {
152 static struct InitTable InitTab = {
153 (ULONG) sizeof(struct GFXBase),
159 static const struct Resident ROMTag = {
172 #define CLOCK_HZ 100000000
174 static struct GFXBase *_gfxbase;
175 const char *gfxname = "PiStorm RTG";
178 __saveds struct GFXBase* InitLib(__REGA6(struct ExecBase *sysbase),
179 __REGA0(BPTR seglist),
180 __REGD0(struct GFXBase *exb))
186 __saveds struct GFXBase* OpenLib(__REGA6(struct GFXBase *gfxbase))
188 gfxbase->libNode.lib_OpenCnt++;
189 gfxbase->libNode.lib_Flags &= ~LIBF_DELEXP;
194 BPTR __saveds CloseLib(__REGA6(struct GFXBase *gfxbase))
196 gfxbase->libNode.lib_OpenCnt--;
198 if (!gfxbase->libNode.lib_OpenCnt) {
199 if (gfxbase->libNode.lib_Flags & LIBF_DELEXP) {
200 return (ExpungeLib(gfxbase));
206 BPTR __saveds ExpungeLib(__REGA6(struct GFXBase *exb))
209 struct ExecBase *SysBase = *(struct ExecBase **)4L;
211 if(!exb->libNode.lib_OpenCnt) {
212 ULONG negsize, possize, fullsize;
213 UBYTE *negptr = (UBYTE *)exb;
215 seglist = exb->segList;
217 Remove((struct Node *)exb);
219 negsize = exb->libNode.lib_NegSize;
220 possize = exb->libNode.lib_PosSize;
221 fullsize = negsize + possize;
224 FreeMem(negptr, fullsize);
228 exb->libNode.lib_Flags |= LIBF_DELEXP;
232 ULONG ExtFuncLib(void)
237 static LONG zorro_version = 0;
239 static struct GFXData *gfxdata;
240 //MNTZZ9KRegs* registers;
242 #define LOADLIB(a, b) if ((a = (struct a*)OpenLibrary(b,0L))==NULL) { \
243 KPrintF("Failed to load %s.\n", b); \
247 static BYTE card_already_found;
248 static BYTE card_initialized;
250 int FindCard(__REGA0(struct BoardInfo* b)) {
251 //if (card_already_found)
253 struct ConfigDev* cd = NULL;
254 struct ExpansionBase *ExpansionBase = NULL;
255 struct DOSBase *DOSBase = NULL;
256 struct IntuitionBase *IntuitionBase = NULL;
257 struct ExecBase *SysBase = *(struct ExecBase **)4L;
259 LOADLIB(ExpansionBase, "expansion.library");
260 LOADLIB(DOSBase, "dos.library");
261 LOADLIB(IntuitionBase, "intuition.library");
263 b->MemorySize = CARD_MEMSIZE;
264 b->RegisterBase = (void *)CARD_OFFSET;
265 b->MemoryBase = (void *)(CARD_OFFSET + CARD_REGSIZE);
271 #define VGASPLIT (1 << 6)
272 #define FLICKERFIXER (1 << 12)
273 #define INDISPLAYCHAIN (1 << 20)
274 #define DIRECTACCESS (1 << 26)
276 int InitCard(__REGA0(struct BoardInfo* b)) {
277 //if (!card_initialized)
278 // card_initialized = 1;
283 struct ExecBase *SysBase = *(struct ExecBase **)4L;
285 b->CardBase = (struct CardBase *)_gfxbase;
286 b->ExecBase = SysBase;
287 b->BoardName = "PiStorm RTG";
288 b->BoardType = BT_MNT_ZZ9000;
289 b->PaletteChipType = PCT_MNT_ZZ9000;
290 b->GraphicsControllerType = GCT_MNT_ZZ9000;
292 b->Flags = BIF_INDISPLAYCHAIN | BIF_GRANTDIRECTACCESS;
293 b->RGBFormats = 1 | 2 | 512 | 1024 | 2048;
294 b->SoftSpriteFlags = 0;
295 b->BitsPerCannon = 8;
297 for(i = 0; i < MAXMODES; i++) {
298 b->MaxHorValue[i] = 1920;
299 b->MaxVerValue[i] = 1080;
300 b->MaxHorResolution[i] = 1920;
301 b->MaxVerResolution[i] = 1080;
302 b->PixelClockCount[i] = 1;
305 b->MemoryClock = CLOCK_HZ;
307 //b->AllocCardMem = (void *)NULL;
308 //b->FreeCardMem = (void *)NULL;
309 b->SetSwitch = (void *)SetSwitch;
310 b->SetColorArray = (void *)SetColorArray;
311 b->SetDAC = (void *)SetDAC;
312 b->SetGC = (void *)SetGC;
313 b->SetPanning = (void *)SetPanning;
314 b->CalculateBytesPerRow = (void *)CalculateBytesPerRow;
315 b->CalculateMemory = (void *)CalculateMemory;
316 b->GetCompatibleFormats = (void *)GetCompatibleFormats;
317 b->SetDisplay = (void *)SetDisplay;
319 b->ResolvePixelClock = (void *)ResolvePixelClock;
320 b->GetPixelClock = (void *)GetPixelClock;
321 b->SetClock = (void *)SetClock;
323 b->SetMemoryMode = (void *)SetMemoryMode;
324 b->SetWriteMask = (void *)SetWriteMask;
325 b->SetClearMask = (void *)SetClearMask;
326 b->SetReadPlane = (void *)SetReadPlane;
328 b->WaitVerticalSync = (void *)WaitVerticalSync;
329 //b->SetInterrupt = (void *)NULL;
331 //b->WaitBlitter = (void *)NULL;
333 //b->ScrollPlanar = (void *)NULL;
334 //b->UpdatePlanar = (void *)NULL;
336 //b->BlitPlanar2Chunky = (void *)NULL;
337 //b->BlitPlanar2Direct = (void *)NULL;
339 b->FillRect = (void *)FillRect;
340 //b->InvertRect = (void *)NULL;
341 //b->BlitRect = (void *)NULL;
342 //b->BlitTemplate = (void *)NULL;
343 //b->BlitPattern = (void *)NULL;
344 //b->DrawLine = (void *)NULL;
345 //b->BlitRectNoMaskComplete = (void *)NULL;
346 //b->EnableSoftSprite = (void *)NULL;
348 //b->AllocCardMemAbs = (void *)NULL;
349 //b->SetSplitPosition = (void *)NULL;
350 //b->ReInitMemory = (void *)NULL;
351 //b->WriteYUVRect = (void *)NULL;
352 //b->GetVSyncState = (void *)NULL;
353 //b->GetVBeamPos = (void *)NULL;
354 //b->SetDPMSLevel = (void *)NULL;
355 //b->ResetChip = (void *)NULL;
356 //b->GetFeatureAttrs = (void *)NULL;
357 //b->AllocBitMap = (void *)NULL;
358 //b->FreeBitMap = (void *)NULL;
359 //b->GetBitMapAttr = (void *)NULL;
361 //b->SetSprite = (void *)NULL;
362 //b->SetSpritePosition = (void *)NULL;
363 //b->SetSpriteImage = (void *)NULL;
364 //b->SetSpriteColor = (void *)NULL;
366 //b->CreateFeature = (void *)NULL;
367 //b->SetFeatureAttrs = (void *)NULL;
368 //b->DeleteFeature = (void *)NULL;
373 void SetDAC (__REGA0(struct BoardInfo *b), __REGD7(RGBFTYPE format)) {
374 // Used to set the color format of the video card's RAMDAC.
375 // This needs no handling, since the PiStorm doesn't really have a RAMDAC or a video card chipset.
378 void SetGC (__REGA0(struct BoardInfo *b), __REGA1(struct ModeInfo *mode_info), __REGD0(BOOL border)) {
379 b->ModeInfo = mode_info;
380 // Send width, height and format to the RaspberryPi Targetable Graphics.
381 WRITESHORT(RTG_X1, mode_info->Width);
382 WRITESHORT(RTG_Y1, mode_info->Height);
383 WRITESHORT(RTG_FORMAT, rgbf_to_rtg[b->RGBFormat]);
384 WRITESHORT(RTG_COMMAND, RTGCMD_SETGC);
388 UWORD SetSwitch (__REGA0(struct BoardInfo *b), __REGD0(UWORD enabled)) {
389 if (setswitch != enabled) {
393 WRITEBYTE(RTG_U81, setswitch);
394 WRITESHORT(RTG_X1, setswitch);
395 WRITESHORT(RTG_COMMAND, RTGCMD_SETSWITCH);
400 void SetPanning (__REGA0(struct BoardInfo *b), __REGA1(UBYTE *addr), __REGD0(UWORD width), __REGD1(WORD x_offset), __REGD2(WORD y_offset), __REGD7(RGBFTYPE format)) {
401 // Set the panning offset, or the offset used for the current display area on the Pi.
402 // The address needs to have CARD_BASE subtracted from it to be used as an offset on the Pi side.
406 b->XOffset = x_offset;
407 b->YOffset = y_offset;
409 WRITELONG(RTG_ADDR1, (unsigned int)addr);
410 WRITESHORT(RTG_X1, width);
411 WRITESHORT(RTG_X2, b->XOffset);
412 WRITESHORT(RTG_Y2, b->YOffset);
413 WRITESHORT(RTG_COMMAND, RTGCMD_SETPAN);
416 void SetColorArray (__REGA0(struct BoardInfo *b), __REGD0(UWORD start), __REGD1(UWORD num)) {
417 // Sets the color components of X color components for 8-bit paletted display modes.
423 for(int i = start; i < j; i++) {
424 //WRITEBYTE(RTG_U82, (unsigned char)b->CLUT[i].Red);
425 //WRITEBYTE(RTG_U83, (unsigned char)b->CLUT[i].Green);
426 //WRITEBYTE(RTG_U84, (unsigned char)b->CLUT[i].Blue);
427 unsigned int xrgb = 0 | (b->CLUT[i].Red << 16) | (b->CLUT[i].Green << 8) | (b->CLUT[i].Blue);
428 WRITEBYTE(RTG_U81, (unsigned char)i);
429 WRITELONG(RTG_RGB1, xrgb);
430 WRITESHORT(RTG_COMMAND, RTGCMD_SETCLUT);
434 UWORD CalculateBytesPerRow (__REGA0(struct BoardInfo *b), __REGD0(UWORD width), __REGD7(RGBFTYPE format)) {
443 case 0x05: case 0x0A: case 0x0B: case 0x0D:
445 case 0x08: case 0x09:
450 APTR CalculateMemory (__REGA0(struct BoardInfo *b), __REGA1(unsigned int addr), __REGD7(RGBFTYPE format)) {
454 if (addr > (unsigned int)b->MemoryBase && addr < (((unsigned int)b->MemoryBase) + b->MemorySize)) {
455 addr = ((addr + 0x1000) & 0xFFFFF000);
461 ULONG GetCompatibleFormats (__REGA0(struct BoardInfo *b), __REGD7(RGBFTYPE format)) {
462 // It is of course compatible with all the formats ever.
466 static int display_enabled = 0;
467 UWORD SetDisplay (__REGA0(struct BoardInfo *b), __REGD0(UWORD enabled)) {
468 // Enables or disables the display.
469 WRITEBYTE(RTG_U82, (unsigned char)enabled);
470 WRITESHORT(RTG_COMMAND, RTGCMD_SETDISPLAY);
475 LONG ResolvePixelClock (__REGA0(struct BoardInfo *b), __REGA1(struct ModeInfo *mode_info), __REGD0(ULONG pixel_clock), __REGD7(RGBFTYPE format)) {
476 mode_info->PixelClock = CLOCK_HZ;
477 mode_info->pll1.Clock = 0;
478 mode_info->pll2.ClockDivide = 1;
483 ULONG GetPixelClock (__REGA0(struct BoardInfo *b), __REGA1(struct ModeInfo *mode_info), __REGD0(ULONG index), __REGD7(RGBFTYPE format)) {
484 // Just return 100MHz.
488 // None of these five really have to do anything.
489 void SetClock (__REGA0(struct BoardInfo *b)) {
492 void SetMemoryMode (__REGA0(struct BoardInfo *b), __REGD7(RGBFTYPE format)) {
495 void SetWriteMask (__REGA0(struct BoardInfo *b), __REGD0(UBYTE mask)) {
498 void SetClearMask (__REGA0(struct BoardInfo *b), __REGD0(UBYTE mask)) {
501 void SetReadPlane (__REGA0(struct BoardInfo *b), __REGD0(UBYTE plane)) {
504 void WaitVerticalSync (__REGA0(struct BoardInfo *b), __REGD0(BOOL toggle)) {
505 // I don't know why this one has a bool in D0, but it isn't used for anything.
508 void FillRect (__REGA0(struct BoardInfo *b), __REGA1(struct RenderInfo *r), __REGD0(WORD x), __REGD1(WORD y), __REGD2(WORD w), __REGD3(WORD h), __REGD4(ULONG color), __REGD5(UBYTE mask), __REGD7(RGBFTYPE format)) {
512 b->FillRectDefault(b, r, x, y, w, h, color, mask, format);
514 WRITESHORT(RTG_FORMAT, rgbf_to_rtg[format]);
515 WRITESHORT(RTG_X1, x);
516 WRITESHORT(RTG_X2, w);
517 WRITESHORT(RTG_Y1, y);
518 WRITESHORT(RTG_Y2, h);
519 WRITELONG(RTG_RGB1, color);
520 WRITESHORT(RTG_X3, r->BytesPerRow);
521 WRITESHORT(RTG_COMMAND, RTGCMD_FILLRECT);