diff options
Diffstat (limited to 'QemuVGADriver/src/QemuVga.c')
| -rw-r--r-- | QemuVGADriver/src/QemuVga.c | 187 |
1 files changed, 143 insertions, 44 deletions
diff --git a/QemuVGADriver/src/QemuVga.c b/QemuVGADriver/src/QemuVga.c index 8c996a7..a208ae0 100644 --- a/QemuVGADriver/src/QemuVga.c +++ b/QemuVGADriver/src/QemuVga.c @@ -2,6 +2,7 @@ #include "VideoDriverPrototypes.h" #include "DriverQDCalls.h" #include "QemuVga.h" +#include <Timer.h> /* List of supported modes */ struct vMode { @@ -77,11 +78,82 @@ static UInt32 ExtReadL(UInt32 reg) return val; } +static OSStatus VBLTimerProc(void *p1, void *p2); + +#ifndef USE_DSL_TIMER +static TMTask gLegacyTimer; + +static pascal void legacyTimerCB(TMTaskPtr *inTask) +{ + VBLTimerProc(NULL, NULL); +} + +static const RoutineDescriptor gLegacyTimerDesc = BUILD_ROUTINE_DESCRIPTOR(uppTimerProcInfo, legacyTimerCB); +static const TimerUPP gLegacyTimerProc = (TimerUPP) &gLegacyTimerDesc; +static int gTimerInstalled; + +static OSStatus ScheduleVBLTimer(void) +{ + if (!gTimerInstalled) { + BlockZero(&gLegacyTimer, sizeof(gLegacyTimer)); + gLegacyTimer.tmAddr = gLegacyTimerProc; + gLegacyTimer.qLink = (QElemPtr)'eada'; + InsXTime((QElemPtr)&gLegacyTimer); + gTimerInstalled = true; + } + PrimeTime((QElemPtr)&gLegacyTimer, TIMER_DURATION); + return noErr; +} + +#else + +static OSStatus ScheduleVBLTimer(void) +{ + AbsoluteTime target = AddDurationToAbsolute(TIMER_DURATION, UpTime()); + return SetInterruptTimer(&target, VBLTimerProc, NULL, &GLOBAL.VBLTimerID); +} + +#endif + +static OSStatus VBLTimerProc(void *p1, void *p2) +{ + static UInt32 VBcnt; + + GLOBAL.inInterrupt = 1; + + /* This can be called before the service is ready */ + if (GLOBAL.qdVBLInterrupt && GLOBAL.qdInterruptsEnable) + VSLDoInterruptService(GLOBAL.qdVBLInterrupt); + + /* Reschedule */ + ScheduleVBLTimer(); + + GLOBAL.inInterrupt = 0; +} + +#ifdef USE_PCI_IRQ +static InterruptMemberNumber PCIInterruptHandler(InterruptSetMember ISTmember, + void *refCon, UInt32 theIntCount) +{ + UInt32 reg; + + reg = ExtReadL(2); + if (!(reg & 1)) + return kIsrIsNotComplete; + if (GLOBAL.qdVBLInterrupt && GLOBAL.qdInterruptsEnable) + VSLDoInterruptService(GLOBAL.qdVBLInterrupt); + ExtWriteL(2, 3); + return kIsrIsComplete; +} +#endif + + OSStatus QemuVga_Init(void) { UInt16 id, i; UInt32 mem, width, height, depth; + lprintf("First MMIO read...\n"); id = DispiReadW(VBE_DISPI_INDEX_ID); mem = DispiReadW(VBE_DISPI_INDEX_VIDEO_MEMORY_64K); mem <<= 16; @@ -110,34 +182,20 @@ OSStatus QemuVga_Init(void) lprintf("Not found in list ! using default.\n"); i = 0; } - GLOBAL.curMode = GLOBAL.bootMode = i; + GLOBAL.bootMode = i; GLOBAL.numModes = sizeof(vModes) / sizeof(struct vMode) - 1; - return noErr; -} - -static OSStatus VBLTimerProc(void *p1, void *p2); - -static OSStatus ScheduleVBLTimer(void) -{ - /* XXX HACK: Run timer at 20Hz */ - AbsoluteTime target = AddDurationToAbsolute(50, UpTime()); - - return SetInterruptTimer(&target, VBLTimerProc, NULL, &GLOBAL.VBLTimerID); -} - -static OSStatus VBLTimerProc(void *p1, void *p2) -{ - GLOBAL.inInterrupt = 1; - - /* This can be called before the service is ready */ - if (GLOBAL.qdVBLInterrupt && GLOBAL.qdInterruptsEnable) - VSLDoInterruptService(GLOBAL.qdVBLInterrupt); - - /* Reschedule */ - ScheduleVBLTimer(); + QemuVga_SetMode(GLOBAL.bootMode, depth, 0); - GLOBAL.inInterrupt = 0; +#ifdef USE_PCI_IRQ + if (SetupPCIInterrupt(&GLOBAL.deviceEntry, &GLOBAL.irqInfo, + PCIInterruptHandler, NULL) == noErr) + GLOBAL.hasPCIInterrupt = true; + else +#else + GLOBAL.hasPCIInterrupt = false; +#endif + return noErr; } OSStatus QemuVga_Open(void) @@ -146,22 +204,29 @@ OSStatus QemuVga_Open(void) GLOBAL.isOpen = true; - /* Schedule the timer now if timers are supported. They aren't on OS X - * in which case we must not create the VSL service, otherwise OS X will expect - * a VBL and fail to update the cursor when not getting one. - */ - GLOBAL.hasTimer = (ScheduleVBLTimer() == noErr); - GLOBAL.qdInterruptsEnable = GLOBAL.hasTimer; + if (GLOBAL.hasPCIInterrupt) { + QemuVga_EnableInterrupts(); + lprintf("VBL registered using PCI interrupts\n"); + } else { + /* Schedule the timer now if timers are supported. They aren't on OS X + * in which case we must not create the VSL service, otherwise OS X will expect + * a VBL and fail to update the cursor when not getting one. + */ + lprintf("Testing using timer to simulate VBL..\n"); + GLOBAL.hasTimer = (ScheduleVBLTimer() == noErr); + GLOBAL.qdInterruptsEnable = GLOBAL.hasTimer; + + if (GLOBAL.hasTimer) + lprintf("Using timer to simulate VBL.\n"); + else + lprintf("No timer service (OS X ?), VBL not registered.\n"); + + } - /* Create VBL if timer works */ - if (GLOBAL.hasTimer && !GLOBAL.qdVBLInterrupt) + /* Create VBL if we have a PCI interrupt or timer works */ + if (GLOBAL.hasPCIInterrupt || GLOBAL.hasTimer) VSLNewInterruptService(&GLOBAL.deviceEntry, kVBLInterruptServiceType, &GLOBAL.qdVBLInterrupt); - if (GLOBAL.hasTimer) - lprintf("Using timer to simulate VBL.\n"); - else - lprintf("No timer service (OS X ?), VBL not registered.\n"); - return noErr; } @@ -190,7 +255,11 @@ void QemuVga_EnableInterrupts(void) { GLOBAL.qdInterruptsEnable = true; if (GLOBAL.hasTimer) - ScheduleVBLTimer(); + ScheduleVBLTimer(); + else if (GLOBAL.hasPCIInterrupt) { + GLOBAL.irqInfo.enableFunction(GLOBAL.irqInfo.interruptSetMember, GLOBAL.irqInfo.refCon); + ExtWriteL(2, 3); + } } void QemuVga_DisableInterrupts(void) @@ -200,6 +269,10 @@ void QemuVga_DisableInterrupts(void) GLOBAL.qdInterruptsEnable = false; if (GLOBAL.hasTimer) CancelTimer(GLOBAL.VBLTimerID, &remaining); + else if (GLOBAL.hasPCIInterrupt) { + ExtWriteL(2, 1); + GLOBAL.irqInfo.disableFunction(GLOBAL.irqInfo.interruptSetMember, GLOBAL.irqInfo.refCon); + } } OSStatus QemuVga_SetColorEntry(UInt32 index, RGBColor *color) @@ -238,17 +311,41 @@ OSStatus QemuVga_GetModeInfo(UInt32 index, UInt32 *width, UInt32 *height) return noErr; } +OSStatus QemuVga_GetModePages(UInt32 index, UInt32 depth, + UInt32 *pageSize, UInt32 *pageCount) +{ + UInt32 width, height, pBytes; + + if (index >= GLOBAL.numModes) + return paramErr; + width = vModes[index].width; + height = vModes[index].height; + pBytes = width * ((depth + 7) / 8) * height; + if (pageSize) + *pageSize = pBytes; + if (pageCount) { + if (pBytes <= (GLOBAL.boardFBMappedSize / 2)) + *pageCount = 2; + else + *pageCount = 1; + } + return noErr; +} -OSStatus QemuVga_SetMode(UInt32 mode, UInt32 depth) +OSStatus QemuVga_SetMode(UInt32 mode, UInt32 depth, UInt32 page) { UInt32 width, height; + UInt32 pageSize, numPages; if (mode >= GLOBAL.numModes) return paramErr; + width = vModes[mode].width; height = vModes[mode].height; - - lprintf("Set Mode: %dx%dx%d\n", width, height, depth); + QemuVga_GetModePages(mode, depth, &pageSize, &numPages); + lprintf("Set Mode: %dx%dx%d has %d pages\n", width, height, depth, numPages); + if (page >= numPages) + return paramErr; DispiWriteW(VBE_DISPI_INDEX_ENABLE, 0); DispiWriteW(VBE_DISPI_INDEX_BPP, depth); @@ -256,12 +353,14 @@ OSStatus QemuVga_SetMode(UInt32 mode, UInt32 depth) DispiWriteW(VBE_DISPI_INDEX_YRES, height); DispiWriteW(VBE_DISPI_INDEX_BANK, 0); DispiWriteW(VBE_DISPI_INDEX_VIRT_WIDTH, width); - DispiWriteW(VBE_DISPI_INDEX_VIRT_HEIGHT, height); + DispiWriteW(VBE_DISPI_INDEX_VIRT_HEIGHT, height * numPages); DispiWriteW(VBE_DISPI_INDEX_X_OFFSET, 0); - DispiWriteW(VBE_DISPI_INDEX_Y_OFFSET, 0); + DispiWriteW(VBE_DISPI_INDEX_Y_OFFSET, height * page); DispiWriteW(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED | VBE_DISPI_LFB_ENABLED | VBE_DISPI_8BIT_DAC); GLOBAL.curMode = mode; GLOBAL.depth = depth; + GLOBAL.curPage = page; + GLOBAL.curBaseAddress = FB_START + page * pageSize; return noErr; } |