3 BOOLEAN DMAOutputISR(PKINTERRUPT Interrupt, PVOID ServiceContext)
9 void sb16_play(WAVE_HDR* wave)
15 PKINTERRUPT IrqObject;
16 unsigned int mask,newmask;
19 unsigned int tmp[255];
24 tmp[i++]=get_dma_page(0x0fffff+IDMAP_BASE);
25 printk("0x%x ",tmp[i-1]);
27 while((tmp[i-1]&0xffff)!=0);
28 free_page((tmp[0])-IDMAP_BASE,i-1);
29 sb16.buffer=((unsigned char*)tmp[i-1]);
32 * Because this is used by alomost every subsystem including irqs it
33 * must be atomic. The following code sequence disables interrupts after
34 * saving the previous state of the interrupt flag
37 __asm__("pushf\n\tpop %0\n\tcli\n\t"
41 memcpy(sb16.buffer,(&wave->data),wave->dLen);
44 MappedIrq = HalGetInterruptVector(Internal,0,0,8+sb16.irq,&Dirql,&Affinity);
48 IoConnectInterrupt(&IrqObject,DMAOutputISR,0,NULL,MappedIrq,Dirql,Dirql,0,FALSE,Affinity,FALSE);
51 newmask=((int)1<<sb16.irq);
52 outb(0x21,(mask&~newmask));
54 // Restore the interrupt flag
55 __asm__("push %0\n\tpopf\n\t"
61 disable_dma(sb16.dma8);
65 set_dma_count(1,wave->dLen);
66 set_dma_mode(1,DMA_MODE_WRITE);
68 //outb(0x3,(wave->dLen)&0xff);
69 //outb(0x3,((unsigned int)(wave->dLen)>>8)&0xff);
70 set_dma_addr(sb16.dma8,(unsigned int)sb16.buffer-IDMAP_BASE);
71 //outb(0x83,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>16))&0xf);
72 //outb(0x2,((unsigned int)sb16.buffer&0xff));
73 //outb(0x2,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>8))&0xff);
74 enable_dma(sb16.dma8);
77 write_dsp(sb16.base,0x00D1);
79 write_dsp(sb16.base,0x40);
80 write_dsp(sb16.base,((unsigned char)256-(1000000/wave->nSamplesPerSec)));
82 outb(sb16.base + 4, (int) 0xa);
83 outb(sb16.base + 5, (int) 0x00);
85 outb(sb16.base + 4, (int) 4);
86 outb(sb16.base + 5, (int) 0xFF);
88 outb(sb16.base + 4, (int) 0x22);
89 outb(sb16.base + 5, (int) 0xFF);
91 write_dsp(sb16.base,0x14);
92 write_dsp(sb16.base,(wave->dLen&0x00ff));
93 write_dsp(sb16.base,((wave->dLen)&0xff00)>>8);
95 // write_dsp(sb16.base,0xc0);
96 // write_dsp(sb16.base,0x0);
97 // OldIRQ=HalGetInterruptVector(Internal,0,0,irq+8,&irql,&affinity);
98 // printk("OldIRQ: 0x%x\n",OldIRQ);
100 // status=IoConnectInterrupt(&IrqObject,playRoutine,0,NULL,OldIRQ,irql,irql,0,FALSE,affinity,FALSE);
101 // if(status!=STATUS_SUCCESS) printk("Couldn't set irq\n");
102 // else printk("IRQ set\n");
106 void dump_wav(WAVE_HDR* wave)
108 printk("wave.rID: %c%c%c%c\n",wave->rID[0],wave->rID[1],wave->rID[2],wave->rID[3]);
109 printk("wave.rLen: 0x%x\n",wave->rLen);
110 printk("wave.wID: %c%c%c%c\n",wave->wID[0],wave->wID[1],wave->wID[2],wave->wID[3]);
111 printk("wave.fID: %c%c%c%c\n",wave->fID[0],wave->fID[1],wave->fID[2],wave->fID[3]);
112 printk("wave.fLen: 0x%x\n",wave->fLen);
113 printk("wave.wFormatTag: 0x%x\n",wave->wFormatTag);
114 printk("wave.nChannels: 0x%x\n",wave->nChannels);
115 printk("wave.nSamplesPerSec: 0x%x\n",wave->nSamplesPerSec);
116 printk("wave.nAvgBytesPerSec: 0x%x\n",wave->nAvgBytesPerSec);
117 printk("wave.nBlockAlign: 0x%x\n",wave->nBlockAlign);
118 printk("wave.FormatSpecific: 0x%x\n",wave->FormatSpecific);
119 printk("wave.dID: %c%c%c%c\n",wave->dID[0],wave->dID[1],wave->dID[2],wave->dID[3]);
120 printk("wave.dLen: 0x%x\n",wave->dLen);
123 BOOLEAN playRoutine(PKINTERRUPT Interrupt,PVOID ServiceContext)