kolibrios/programs/system/drivers/ati2d/init.c

127 lines
3.3 KiB
C
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static Bool
rhdMapMMIO(RHDPtr rhdPtr)
{
rhdPtr->MMIOMapSize = 1 << rhdPtr->memsize[RHD_MMIO_BAR];
rhdPtr->MMIOBase = MapIoMem(rhdPtr->memBase[RHD_MMIO_BAR],
rhdPtr->MMIOMapSize,PG_SW+PG_NOCACHE);
if( rhdPtr->MMIOBase==0)
return 0;
DBG(dbgprintf("Mapped IO at %x (size %x)\n", rhdPtr->MMIOBase, rhdPtr->MMIOMapSize));
return 1;
}
#define RADEON_NB_TOM 0x15c
static CARD32
rhdGetVideoRamSize(RHDPtr rhdPtr)
{
CARD32 RamSize, BARSize;
if (rhdPtr->ChipSet == RHD_RS690)
RamSize = (_RHDRegRead(rhdPtr, R5XX_CONFIG_MEMSIZE))>>10;
else
if (rhdPtr->IsIGP)
{
CARD32 tom = _RHDRegRead(rhdPtr, RADEON_NB_TOM);
RamSize = (((tom >> 16) - (tom & 0xffff) + 1) << 6);
_RHDRegWrite(rhdPtr,R5XX_CONFIG_MEMSIZE, RamSize<<10);
}
else
{
if (rhdPtr->ChipSet < RHD_R600)
{
RamSize = (_RHDRegRead(rhdPtr, R5XX_CONFIG_MEMSIZE)) >> 10;
if(RamSize==0) RamSize=8192;
}
else
RamSize = (_RHDRegRead(rhdPtr, R6XX_CONFIG_MEMSIZE)) >> 10;
};
BARSize = 1 << (rhdPtr->memsize[RHD_FB_BAR] - 10);
if(BARSize==0)
BARSize = 0x20000;
if (RamSize > BARSize) {
DBG(dbgprintf("The detected amount of videoram"
" exceeds the PCI BAR aperture.\n"));
DBG(dbgprintf("Using only %dkB of the total "
"%dkB.\n", (int) BARSize, (int) RamSize));
return BARSize;
}
else return RamSize;
}
static Bool
rhdMapFB(RHDPtr rhdPtr)
{
rhdPtr->FbMapSize = 1 << rhdPtr->memsize[RHD_FB_BAR];
rhdPtr->PhisBase = rhdPtr->memBase[RHD_FB_BAR];
rhdPtr->FbBase = MapIoMem(rhdPtr->PhisBase, rhdPtr->FbMapSize,PG_SW+PG_NOCACHE);
if (!rhdPtr->FbBase)
return FALSE;
/* These devices have an internal address reference, which some other
* address registers in there also use. This can be different from the
* address in the BAR */
if (rhdPtr->ChipSet < RHD_R600)
rhdPtr->FbIntAddress = _RHDRegRead(rhdPtr, HDP_FB_LOCATION)<< 16;
else
rhdPtr->FbIntAddress = _RHDRegRead(rhdPtr, R6XX_CONFIG_FB_BASE);
// rhdPtr->FbIntAddress = _RHDRegRead(rhdPtr, 0x6110);
// dbgprintf("rhdPtr->FbIntAddress %x\n",rhdPtr->FbIntAddress);
if (rhdPtr->FbIntAddress != rhdPtr->PhisBase)
dbgprintf("PCI FB Address (BAR) is at "
"0x%08X while card Internal Address is 0x%08X\n",
(unsigned int) rhdPtr->PhisBase,rhdPtr->FbIntAddress);
dbgprintf("Mapped FB at %p (size 0x%08X)\n",rhdPtr->FbBase, rhdPtr->FbMapSize);
return TRUE;
}
Bool RHDPreInit()
{
/* We need access to IO space already */
if (!rhdMapMMIO(&rhd)) {
dbgprintf("Failed to map MMIO.\n");
return FALSE;
};
rhd.videoRam = rhdGetVideoRamSize(&rhd);
if (!rhd.videoRam)
{
dbgprintf("No Video RAM detected.\n");
goto error1;
}
dbgprintf("VideoRAM: %d kByte\n",rhd.videoRam);
rhd.FbFreeStart = 0;
rhd.FbFreeSize = rhd.videoRam << 10;
if( !rhdMapFB(&rhd))
return FALSE;
rhd.FbScanoutStart = 0;
rhd.FbScanoutSize = 8*1024*1024;
rhd.FbFreeStart = 8*1024*1024;
rhd.FbFreeSize = rhd.FbMapSize - 8*1024*1024;
rhdInitHeap(&rhd);
return TRUE;
error1:
return FALSE;
};
int KernelFree(void *p)
{
return 0;
}