437752340b8e3b3f557277c44b1e3a0184fde536
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS kernel
4 * FILE: mkernel/modules/sound/sound.c
5 * PURPOSE: SoundBlaster 16 Driver
6 * PROGRAMMER: Snatched from David Welch (welch@mcmail.com)
7 * Modified for Soundblaster by Robert Bergkvist (fragdance@hotmail.com)
13 /* FUNCTIONS **************************************************************/
32 PKINTERRUPT IrqObject
;
34 static BOOLEAN STDCALL
DMAOutputISR(PKINTERRUPT Interrupt
, PVOID ServiceContext
)
36 DPRINT1("interrupt\n");
40 void sb16_play(WAVE_HDR
* wave
)
45 PKINTERRUPT IrqObject
;
49 unsigned int tmp
[255];
54 // tmp[i++]=get_dma_page(0x0fffff);
55 // DPRINT1("0x%x ",tmp[i-1]);
57 while((tmp
[i
-1]&0xffff)!=0);
58 // free_page((tmp[0]),i-1);
59 sb16
.buffer
=((unsigned char*)tmp
[i
-1]);
62 * Because this is used by alomost every subsystem including irqs it
63 * must be atomic. The following code sequence disables interrupts after
64 * saving the previous state of the interrupt flag
69 memcpy(sb16
.buffer
,(&wave
->data
),wave
->dLen
);
72 MappedIrq
= HalGetInterruptVector(Internal
,0,0,8+sb16
.irq
,&Dirql
,&Affinity
);
76 IoConnectInterrupt(&IrqObject
,DMAOutputISR
,0,NULL
,MappedIrq
,Dirql
,Dirql
,0,FALSE
,Affinity
,FALSE
);
79 newmask
=((int)1<<sb16
.irq
);
80 // outb(0x21,(mask&~newmask));
82 // Restore the interrupt flag
87 // disable_dma(sb16.dma8);
91 // set_dma_count(1,wave->dLen);
92 //set_dma_mode(1,DMA_MODE_WRITE);
94 //outb(0x3,(wave->dLen)&0xff);
95 //outb(0x3,((unsigned int)(wave->dLen)>>8)&0xff);
96 //set_dma_addr(sb16.dma8,(unsigned int)sb16.buffer);
97 //outb(0x83,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>16))&0xf);
98 //outb(0x2,((unsigned int)sb16.buffer&0xff));
99 //outb(0x2,(((unsigned int)(sb16.buffer-IDMAP_BASE)>>8))&0xff);
100 //enable_dma(sb16.dma8);
103 write_dsp(sb16
.base
,0x00D1);
105 write_dsp(sb16
.base
,0x40);
106 write_dsp(sb16
.base
,((unsigned char)256-(1000000/wave
->nSamplesPerSec
)));
108 // outb(sb16.base + 4, (int) 0xa);
109 // outb(sb16.base + 5, (int) 0x00);
111 // outb(sb16.base + 4, (int) 4);
112 // outb(sb16.base + 5, (int) 0xFF);
114 // outb(sb16.base + 4, (int) 0x22);
115 // outb(sb16.base + 5, (int) 0xFF);
117 write_dsp(sb16
.base
,0x14);
118 write_dsp(sb16
.base
,(wave
->dLen
&0x00ff));
119 write_dsp(sb16
.base
,((wave
->dLen
)&0xff00)>>8);
121 // write_dsp(sb16.base,0xc0);
122 // write_dsp(sb16.base,0x0);
123 // OldIRQ=HalGetInterruptVector(Internal,0,0,irq+8,&irql,&affinity);
124 // DPRINT1("OldIRQ: 0x%x\n",OldIRQ);
126 // status=IoConnectInterrupt(&IrqObject,playRoutine,0,NULL,OldIRQ,irql,irql,0,FALSE,affinity,FALSE);
127 // if(status!=STATUS_SUCCESS) DPRINT1("Couldn't set irq\n");
128 // else DPRINT1("IRQ set\n");
132 void dump_wav(WAVE_HDR
* wave
)
134 DPRINT1("wave.rID: %c%c%c%c\n",wave
->rID
[0],wave
->rID
[1],wave
->rID
[2],wave
->rID
[3]);
135 DPRINT1("wave.rLen: 0x%x\n",wave
->rLen
);
136 DPRINT1("wave.wID: %c%c%c%c\n",wave
->wID
[0],wave
->wID
[1],wave
->wID
[2],wave
->wID
[3]);
137 DPRINT1("wave.fID: %c%c%c%c\n",wave
->fID
[0],wave
->fID
[1],wave
->fID
[2],wave
->fID
[3]);
138 DPRINT1("wave.fLen: 0x%x\n",wave
->fLen
);
139 DPRINT1("wave.wFormatTag: 0x%x\n",wave
->wFormatTag
);
140 DPRINT1("wave.nChannels: 0x%x\n",wave
->nChannels
);
141 DPRINT1("wave.nSamplesPerSec: 0x%x\n",wave
->nSamplesPerSec
);
142 DPRINT1("wave.nAvgBytesPerSec: 0x%x\n",wave
->nAvgBytesPerSec
);
143 DPRINT1("wave.nBlockAlign: 0x%x\n",wave
->nBlockAlign
);
144 DPRINT1("wave.FormatSpecific: 0x%x\n",wave
->FormatSpecific
);
145 DPRINT1("wave.dID: %c%c%c%c\n",wave
->dID
[0],wave
->dID
[1],wave
->dID
[2],wave
->dID
[3]);
146 DPRINT1("wave.dLen: 0x%x\n",wave
->dLen
);
149 BOOLEAN
playRoutine(PKINTERRUPT Interrupt
,PVOID ServiceContext
)