static void dmaBurst(Uns32 ch, void *from, void *to, Uns32 bytes)
{
Uns32 offset = ch * DMA_CHANNEL_STRIDE;
LOG("dmaBurst ch:%d bytes:%d\n", ch, bytes);
writeReg32(DMA_BASE, DMA_C0_SRC_ADDR + offset, (Uns32)from);
writeReg32(DMA_BASE, DMA_C0_DST_ADDR + offset, (Uns32)to);
writeReg32(DMA_BASE, DMA_C0_CONTROL + offset, bytes);
writeReg32(DMA_BASE, DMA_C0_CONFIGURATION + offset, ENABLE|INTEN);
}
void interruptHandler(void)
{
LOG("Interrupt\n");
if ( readReg32(DMA_BASE, DMA_C0_CONFIGURATION) & 0x8000 ) {
LOG("Interrupt ch0 0x%x\n", readReg32(DMA_BASE, DMA_C0_CONFIGURATION));
writeReg32(DMA_BASE, DMA_C0_CONFIGURATION, 0);
interruptCount++;
}
if ( readReg32(DMA_BASE, DMA_C1_CONFIGURATION) & 0x8000 ) {
LOG("Interrupt ch1 0x%x\n", readReg32(DMA_BASE, DMA_C1_CONFIGURATION));
writeReg32(DMA_BASE, DMA_C1_CONFIGURATION, 0);
interruptCount++;
}
}
/***************************************************
* scaler_write_preset()
****************************************************/
STATIC long scaler_write_preset(scalerRecord *psr, int signal, long val)
{
devScalerPvt *dpvt = psr->dpvt;
int card = dpvt->card;
volatile char *addr= scaler_state[card]->localAddr;
short mask;
int offset= PRESET_0_OFFSET+signal*4;
Debug(5,"scaler_write_preset: card %d\n", card);
Debug(5,"scaler_write_preset: signal %d\n", signal);
Debug(5,"scaler_write_preset: val = %d\n", (int)val);
if ((card+1) > scaler_total_cards) return(ERROR);
if (!scaler_state[card]->card_exists) return(ERROR);
if ((signal+1) > MAX_SCALER_CHANNELS) return(ERROR);
/* write preset; save a copy in scaler_state */
writeReg32(addr,offset,val-1);
scaler_state[card]->preset[signal] = val-1;
/* make the preset scaler count down */
mask = readReg16(addr,DIRECTION_OFFSET);
mask |= 1<<signal;
Debug(5,"scaler_write_preset: up/down mask = 0x%x\n", mask);
writeReg16(addr,DIRECTION_OFFSET,mask);
/* enable IRQ from preset channel */
mask = readReg16(addr,IRQ_MASK_OFFSET);
mask |= 1<<signal;
Debug(5,"scaler_write_preset: IRQ mask = 0x%x\n", mask);
writeReg16(addr,IRQ_MASK_OFFSET,mask);
return(0);
}
