Subversion Repositories Kolibri OS

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;;                                                              ;;

;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;

;; Distributed under terms of the GNU General Public License    ;;

;;                                                              ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

format MS COFF

include 'config.inc'

;structs----------------------------------------------------------

struc IOCTL

{  .handle	dd ?

   .io_code	dd ?

   .input	dd ?

   .inp_size	dd ?

   .output	dd ?

   .out_size	dd ?

}

virtual at 0

  IOCTL IOCTL

end virtual

;something--------------------------------------------------------

public START

public service_proc

public version

include '..\proc32.inc'

include '..\imports.inc'

section '.flat' code readable align 16

include 'sb16.inc'

;-------------------------------------------------------------------------------

proc START stdcall, state:dword

	   cmp	[state], 1

	   jne	.stop

.entry:

if DEBUG

	   mov	esi, msgInit

	   call SysMsgBoardStr

end if

	   call detect		 ;returns DSP version or zero if

	   test eax,eax 	 ;SB card not found

	   jz	.exit

if DEBUG

	   movzx eax,al 	 ;major version

	   mov esi,sb_DSP_description

	   dec eax

	   jz  .sb_say_about_found_dsp

	   mov dword[esi],'2.x '

	   dec eax

	   jz  .sb_say_about_found_dsp

	   mov dword[esi],'Pro '

	   dec eax

	   jz  .sb_say_about_found_dsp

	   mov dword[esi],'16  '

.sb_say_about_found_dsp:

	   mov esi,msgDSPFound

	   call SysMsgBoardStr

end if

	   xor	eax,eax

	   mov	ebx,[sb_base_port]

	   lea	ecx,[ebx+0xF]

	   call ReservePortArea  ;these ports must be my!

if DEBUG

	   dec	eax

	   jnz	@f

	   mov	esi,msgErrRsrvPorts

	   call SysMsgBoardStr

@@:

end if

	   call sb_setup	 ;clock it, etc

	   stdcall AttachIntHandler, sb_irq_num, sb_irq, 0

if DEBUG

	   test eax,eax

	   jnz	@f

	   mov	esi,msgErrAtchIRQ

	   call SysMsgBoardStr

	   stdcall GetIntHandler, sb_irq_num

	   call SysMsgBoardNum

	   jmp	.stop

@@:

	   mov	esi,msgSucAtchIRQ

	   call SysMsgBoardStr

end if

	   stdcall RegService, my_service, service_proc

	   ret

.stop:

	   call sb_reset

.exit:

if DEBUG

	   mov esi,msgExit

	   call SysMsgBoardStr

end if

	   xor	eax, eax

	   ret

endp

;-------------------------------------------------------------------------------

handle	   equ	IOCTL.handle

io_code    equ	IOCTL.io_code

input	   equ	IOCTL.input

inp_size   equ	IOCTL.inp_size

output	   equ	IOCTL.output

out_size   equ	IOCTL.out_size

align 4

proc service_proc stdcall, ioctl:dword

	   mov	edi,[ioctl]

	   mov	eax,[edi+io_code]

	   cmp	eax,SRV_GETVERSION

	   jne	@F

	   mov	eax,[edi+output]

	   cmp	[edi+out_size],4

	   jne	.fail

	   mov	[eax],dword API_VERSION

	   xor	eax,eax

	   ret

@@:

	   cmp	eax,DEV_PLAY

	   jne	@f

if DEBUG

	   mov	esi,msgPlay

	   call SysMsgBoardStr

end if

	   call sb_stop 	 ;to play smth new we must stop smth old

	   call pre_fill_data	 ;fill first and second half of the buffer

	   call pre_fill_data	 ;

	   call sb_set_dma	 ;is it really needed here? Paranoia.

	   call sb_play

	   xor	eax,eax 	  ;set maximum volume

	   call sb_set_master_vol

	   xor	eax,eax

	   ret

;@@:                             ;all this commented stuff in service proc

;           cmp  eax,DEV_STOP    ;is never used. Mixer do this virtually,

;           jne  @f              ;e.g. instead of stopping driver it

;if DEBUG                        ;outputs silence

;           mov  esi,msgStop

;           call SysMsgBoardStr

;end if

;           call sb_stop

;           xor  eax,eax

;           ret

@@:

	   cmp	eax,DEV_CALLBACK

	   jne	@f

if DEBUG

	   mov	esi,msgCallback

	   call SysMsgBoardStr

end if

	   mov	edi,[edi+input]

	   mov	eax,[edi]

	   mov	[callback],eax

if DEBUG

	   call SysMsgBoardNum

end if

	   xor	eax,eax

	   ret

@@:

	   cmp	eax,DEV_SET_MASTERVOL ;Serge asked me to unlock

	   jne	@F ;DEV_SET(GET)_MASTERVOL, although mixer doesn't use it.

	   ;It doesn't use it _in current version_ - but in the future...

if DEBUG

	   mov	esi,msgSetVol

	   call SysMsgBoardStr

end if

	   mov	eax,[edi+input]

	   mov	eax,[eax]

	   call sb_set_master_vol

	   xor	eax,eax

	   ret

@@:

	   cmp	eax,DEV_GET_MASTERVOL

	   jne	@F

if DEBUG

	   mov	esi,msgGetVol

	   call SysMsgBoardStr

end if

	   mov	eax,[edi+output]

	   mov	edx,[sb_master_vol]

	   mov	[eax],edx

	   xor	eax,eax

	   ret

.fail:

	   or eax, -1

	   ret

endp

restore   handle

restore   io_code

restore   input

restore   inp_size

restore   output

restore   out_size

;-------------------------------------------------------------------------------

align 4

proc sb_irq

	   mov	edx,[sb_base_port] ;tell the DSP that we have processed IRQ

	   add	dl,0xF		   ;0xF for 16 bit sound, 0xE for 8 bit sound

	   in	al,dx		   ;for non-stop sound

pre_fill_data:

	   mov	eax,int_flip_flop

	   not	dword[eax]

	   mov	eax,[eax]

	   test eax,eax

	   jns	.fill_second_half

if sb_buffer_size eq small_buffer

	   stdcall [callback],SB16Buffer0 ;for 32k buffer

else if sb_buffer_size eq full_buffer

	   stdcall [callback],SB16Buffer0 ;for 64k buffer

	   stdcall [callback],SB16Buffer1 ;for 64k buffer

end if

	   xor	eax,eax

	   ret

.fill_second_half:

if sb_buffer_size eq small_buffer

	   stdcall [callback],SB16Buffer1 ;for 32k buffer

else if sb_buffer_size eq full_buffer

	   stdcall [callback],SB16Buffer2 ;for 64k buffer

	   stdcall [callback],SB16Buffer3 ;for 64k buffer

end if

	   xor	eax,eax

	   ret

endp

;-------------------------------------------------------------------------------

align 4

proc detect

.sb_detect_next_port:

if DEBUG

	   inc	dword[port_second_digit_num]

end if

	   mov	edx,sb_base_port

	   add	byte[edx],10h

	   cmp	byte[edx],80h

	   jbe	.sb_try_to_detect_at_specified_port

;error - no SB card detected

.sb_not_found_err:

	   xor	eax, eax

	   ret

.sb_try_to_detect_at_specified_port:

	   call sb_reset

	   add	dl,8

	   mov	ecx,100

.sb_check_port:

	   in	al,dx

	   test al,al		 ;is DSP port ready to be read?

	   jns	.sb_port_not_ready

	   sub	dl,4

	   in	al,dx		 ;check for AAh response

	   add	dl,4

	   cmp	al,0xAA

	   jne	.sb_port_not_ready

.sb_card_found:

	   and	dl,0xF0

	   add	dl,0xC

	   sb_out 0xE1		 ;get DSP version

	   add	dl,2

@@:

	   in	al,dx

	   test al,al		 ;is DSP port ready to be read?

	   jns	@b

	   sub	dl,4

	   in	al,dx		 ;get major version

	   ror	eax,16

	   add	dl,4

@@:

	   in	al,dx

	   test al,al		 ;is DSP port ready to be read?

	   jns	@b

	   sub	dl,4

	   in	al,dx		 ;get minor version

	   xor	edx,edx

	   mov	dl,10

	   div	dl

	   ror	eax,16

	   xor	ah,ah

	   mov	[sb_DSP_version_int],eax ;for internal usage

if DEBUG

	   add	[sb_DSP_version],eax

end if

	   ret

.sb_port_not_ready:

	   loop .sb_check_port	 ;100 retries (~100 microsec.)

	   jmp	.sb_detect_next_port

endp

;-------------------------------------------------------------------------------

if DEBUG

proc SysMsgBoardNum ;warning: destroys eax,ebx,ecx,esi

	   mov	ebx,eax

	   mov	ecx,8

	   mov	esi,(number_to_out+1)

.1:

	   mov	eax,ebx

	   and	eax,0xF

	   add	al,'0'

	   cmp	al,(10+'0')

	   jb	@f

	   add	al,('A'-'0'-10)

@@:

	   mov	[esi+ecx],al

	   shr	ebx,4

	   loop .1

	   dec	esi

	   call SysMsgBoardStr

	   ret

endp

end if

;all initialized data place here

align 4

version       dd (5 shl 16) or (API_VERSION and 0xFFFF)

sb_base_port: dd 200h ;don't ask me why - see the code&docs

sound_dma     dd sb_dma_num

;note that 4th DMA channel doesn't exist, it is used for cascade

;plugging the first DMA controler to the second

dma_table     db 0x87,0x83,0x81,0x82,0xFF,0x8B,0x89,0x8A

my_service    db 'SOUND',0  ;max 16 chars include zero

if DEBUG

number_to_out db '0x00000000',13,10,0

msgInit       db 'detecting hardware...',13,10,0

msgExit       db 'exiting... May be some problems found?',13,10,0

msgPlay       db 'start play',13,10,0

;msgStop       db 'stop play',13,10,0

msgCallback   db 'set_callback received from the mixer!',13,10

	      db 'callback handler is: ',0

msgErrAtchIRQ db 'failed to attach IRQ',(sb_irq_num+'0'),13,10

	      db 'owner',39,'s handler: ',0

msgSucAtchIRQ db 'succesfully attached IRQ',(sb_irq_num+'0')

	      db ' as hardcoded',13,10,0

msgErrRsrvPorts db 'failed to reserve needed ports.',13,10

	      db 'Driver may work unstable',13,10,0

msgSetVol     db 'DEV_SET_MASTERVOL call came',13,10,0

msgGetVol     db 'DEV_GET_MASTERVOL call came',13,10,0

msgErrDMAsetup db 'failed to setup DMA - bad channel',13,10,0

;-------------------------------------------------------------------------------

msgDSPFound   db 'DSP found at port 2'

label port_second_digit_num dword at $

	      db '00h',13,10,'DSP version '

sb_DSP_version: db '0.00 - SB'

sb_DSP_description: db 32,32,32,32,13,10,0

;-------------------------------------------------------------------------------

end if

section '.data' data readable writable align 16

;all uninitialized data place here

;pTempBuf          rd 1

callback	   rd 1

int_flip_flop	   rd 1

sb_master_vol	   rd 1

sb_DSP_version_int rd 1