affinity dump_wav irql playRoutine sb16_play

void sb16_play ( WAVE_HDR *  wave ) Definition at line 39 of file wave.c. { ULONG MappedIrq; KIRQL Dirql; KAFFINITY Affinity; PKINTERRUPT IrqObject; unsigned int newmask; unsigned int i; unsigned int tmp[255]; i=0; dump_wav(wave); do { // tmp[i++]=get_dma_page(0x0fffff); // DPRINT1("0x%x ",tmp[i-1]); } while((tmp[i-1]&0xffff)!=0); // free_page((tmp[0]),i-1); sb16.buffer=((unsigned char*)tmp[i-1]); /* * Because this is used by alomost every subsystem including irqs it * must be atomic. The following code sequence disables interrupts after * saving the previous state of the interrupt flag */ _disable(); memcpy(sb16.buffer,(&wave->data),wave->dLen); MappedIrq = HalGetInterruptVector(Internal,0,0,8+sb16.irq,&Dirql,&Affinity); IoConnectInterrupt(&IrqObject,DMAOutputISR,0,NULL,MappedIrq,Dirql,Dirql,0,FALSE,Affinity,FALSE); // mask=inb(0x21); newmask=((int)1<<sb16.irq); // outb(0x21,(mask&~newmask)); // Restore the interrupt flag _enable(); // disable_dma(sb16.dma8); //outb(0x0a,5); // clear_dma_ff(1); //outb(0xc,0); // set_dma_count(1,wave->dLen); //set_dma_mode(1,DMA_MODE_WRITE); //outb(0xb,0x49); //outb(0x3,(wave->dLen)&0xff); //outb(0x3,((unsigned int)(wave->dLen)>>8)&0xff); //set_dma_addr(sb16.dma8,(unsigned int)sb16.buffer); //outb(0x83,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>16))&0xf); //outb(0x2,((unsigned int)sb16.buffer&0xff)); //outb(0x2,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>8))&0xff); //enable_dma(sb16.dma8); //outb(0xa,1); write_dsp(sb16.base,0x00D1); write_dsp(sb16.base,0x40); write_dsp(sb16.base,((unsigned char)256-(1000000/wave->nSamplesPerSec))); // outb(sb16.base + 4, (int) 0xa); // outb(sb16.base + 5, (int) 0x00); // outb(sb16.base + 4, (int) 4); // outb(sb16.base + 5, (int) 0xFF); // outb(sb16.base + 4, (int) 0x22); // outb(sb16.base + 5, (int) 0xFF); write_dsp(sb16.base,0x14); write_dsp(sb16.base,(wave->dLen&0x00ff)); write_dsp(sb16.base,((wave->dLen)&0xff00)>>8); // write_dsp(sb16.base,0xc0); // write_dsp(sb16.base,0x0); // OldIRQ=HalGetInterruptVector(Internal,0,0,irq+8,&irql,&affinity); // DPRINT1("OldIRQ: 0x%x\n",OldIRQ); // status=IoConnectInterrupt(&IrqObject,playRoutine,0,NULL,OldIRQ,irql,irql,0,FALSE,affinity,FALSE); // if(status!=STATUS_SUCCESS) DPRINT1("Couldn't set irq\n"); // else DPRINT1("IRQ set\n"); }