390 lines
9.1 KiB
NASM
390 lines
9.1 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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format MS COFF
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include 'config.inc'
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;structs----------------------------------------------------------
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struc IOCTL
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{ .handle dd ?
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.io_code dd ?
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.input dd ?
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.inp_size dd ?
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.output dd ?
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.out_size dd ?
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}
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virtual at 0
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IOCTL IOCTL
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end virtual
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;something--------------------------------------------------------
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public START
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public service_proc
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public version
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include '..\proc32.inc'
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include '..\imports.inc'
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section '.flat' code readable align 16
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include 'sb16.inc'
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;-------------------------------------------------------------------------------
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proc START stdcall, state:dword
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cmp [state], 1
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jne .stop
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.entry:
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if DEBUG
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mov esi, msgInit
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call SysMsgBoardStr
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end if
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call detect ;returns DSP version or zero if
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test eax,eax ;SB card not found
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jz .exit
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if DEBUG
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movzx eax,al ;major version
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mov esi,sb_DSP_description
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dec eax
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jz .sb_say_about_found_dsp
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mov dword[esi],'2.x '
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dec eax
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jz .sb_say_about_found_dsp
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mov dword[esi],'Pro '
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dec eax
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jz .sb_say_about_found_dsp
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mov dword[esi],'16 '
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.sb_say_about_found_dsp:
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mov esi,msgDSPFound
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call SysMsgBoardStr
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end if
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xor eax,eax
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mov ebx,[sb_base_port]
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lea ecx,[ebx+0xF]
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call ReservePortArea ;these ports must be my!
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if DEBUG
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dec eax
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jnz @f
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mov esi,msgErrRsrvPorts
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call SysMsgBoardStr
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@@:
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end if
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call sb_setup ;clock it, etc
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stdcall AttachIntHandler, sb_irq_num, sb_irq, 0
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if DEBUG
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test eax,eax
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jnz @f
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mov esi,msgErrAtchIRQ
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call SysMsgBoardStr
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stdcall GetIntHandler, sb_irq_num
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call SysMsgBoardNum
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jmp .stop
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@@:
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mov esi,msgSucAtchIRQ
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call SysMsgBoardStr
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end if
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stdcall RegService, my_service, service_proc
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ret
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.stop:
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call sb_reset
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.exit:
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if DEBUG
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mov esi,msgExit
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call SysMsgBoardStr
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end if
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xor eax, eax
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ret
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endp
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;-------------------------------------------------------------------------------
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handle equ IOCTL.handle
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io_code equ IOCTL.io_code
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input equ IOCTL.input
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inp_size equ IOCTL.inp_size
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output equ IOCTL.output
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out_size equ IOCTL.out_size
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align 4
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proc service_proc stdcall, ioctl:dword
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mov edi,[ioctl]
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mov eax,[edi+io_code]
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cmp eax,SRV_GETVERSION
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jne @F
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mov eax,[edi+output]
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cmp [edi+out_size],4
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jne .fail
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mov [eax],dword API_VERSION
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xor eax,eax
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ret
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@@:
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cmp eax,DEV_PLAY
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jne @f
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if DEBUG
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mov esi,msgPlay
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call SysMsgBoardStr
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end if
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call sb_stop ;to play smth new we must stop smth old
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call pre_fill_data ;fill first and second half of the buffer
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call pre_fill_data ;
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call sb_set_dma ;is it really needed here? Paranoia.
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call sb_play
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xor eax,eax ;set maximum volume
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call sb_set_master_vol
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xor eax,eax
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ret
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;@@: ;all this commented stuff in service proc
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; cmp eax,DEV_STOP ;is never used. Mixer do this virtually,
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; jne @f ;e.g. instead of stopping driver it
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;if DEBUG ;outputs silence
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; mov esi,msgStop
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; call SysMsgBoardStr
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;end if
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; call sb_stop
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; xor eax,eax
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; ret
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@@:
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cmp eax,DEV_CALLBACK
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jne @f
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if DEBUG
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mov esi,msgCallback
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call SysMsgBoardStr
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end if
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mov edi,[edi+input]
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mov eax,[edi]
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mov [callback],eax
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if DEBUG
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call SysMsgBoardNum
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end if
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xor eax,eax
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ret
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@@:
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cmp eax,DEV_SET_MASTERVOL ;Serge asked me to unlock
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jne @F ;DEV_SET(GET)_MASTERVOL, although mixer doesn't use it.
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;It doesn't use it _in current version_ - but in the future...
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if DEBUG
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mov esi,msgSetVol
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call SysMsgBoardStr
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end if
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mov eax,[edi+input]
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mov eax,[eax]
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call sb_set_master_vol
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xor eax,eax
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ret
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@@:
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cmp eax,DEV_GET_MASTERVOL
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jne @F
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if DEBUG
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mov esi,msgGetVol
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call SysMsgBoardStr
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end if
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mov eax,[edi+output]
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mov edx,[sb_master_vol]
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mov [eax],edx
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xor eax,eax
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ret
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.fail:
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or eax, -1
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ret
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endp
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restore handle
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restore io_code
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restore input
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restore inp_size
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restore output
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restore out_size
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;-------------------------------------------------------------------------------
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align 4
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proc sb_irq
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mov edx,[sb_base_port] ;tell the DSP that we have processed IRQ
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add dl,0xF ;0xF for 16 bit sound, 0xE for 8 bit sound
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in al,dx ;for non-stop sound
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pre_fill_data:
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mov eax,int_flip_flop
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not dword[eax]
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mov eax,[eax]
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test eax,eax
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jns .fill_second_half
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if sb_buffer_size eq small_buffer
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stdcall [callback],SB16Buffer0 ;for 32k buffer
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else if sb_buffer_size eq full_buffer
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stdcall [callback],SB16Buffer0 ;for 64k buffer
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stdcall [callback],SB16Buffer1 ;for 64k buffer
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end if
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xor eax,eax
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ret
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.fill_second_half:
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if sb_buffer_size eq small_buffer
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stdcall [callback],SB16Buffer1 ;for 32k buffer
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else if sb_buffer_size eq full_buffer
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stdcall [callback],SB16Buffer2 ;for 64k buffer
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stdcall [callback],SB16Buffer3 ;for 64k buffer
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end if
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xor eax,eax
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ret
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endp
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;-------------------------------------------------------------------------------
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align 4
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proc detect
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.sb_detect_next_port:
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if DEBUG
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inc dword[port_second_digit_num]
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end if
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mov edx,sb_base_port
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add byte[edx],10h
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cmp byte[edx],80h
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jbe .sb_try_to_detect_at_specified_port
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;error - no SB card detected
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.sb_not_found_err:
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xor eax, eax
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ret
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.sb_try_to_detect_at_specified_port:
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call sb_reset
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add dl,8
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mov ecx,100
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.sb_check_port:
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in al,dx
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test al,al ;is DSP port ready to be read?
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jns .sb_port_not_ready
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sub dl,4
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in al,dx ;check for AAh response
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add dl,4
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cmp al,0xAA
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jne .sb_port_not_ready
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.sb_card_found:
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and dl,0xF0
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add dl,0xC
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sb_out 0xE1 ;get DSP version
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add dl,2
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@@:
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in al,dx
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test al,al ;is DSP port ready to be read?
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jns @b
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sub dl,4
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in al,dx ;get major version
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ror eax,16
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add dl,4
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@@:
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in al,dx
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test al,al ;is DSP port ready to be read?
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jns @b
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sub dl,4
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in al,dx ;get minor version
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xor edx,edx
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mov dl,10
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div dl
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ror eax,16
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xor ah,ah
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mov [sb_DSP_version_int],eax ;for internal usage
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if DEBUG
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add [sb_DSP_version],eax
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end if
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ret
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.sb_port_not_ready:
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loop .sb_check_port ;100 retries (~100 microsec.)
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jmp .sb_detect_next_port
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endp
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;-------------------------------------------------------------------------------
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if DEBUG
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proc SysMsgBoardNum ;warning: destroys eax,ebx,ecx,esi
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mov ebx,eax
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mov ecx,8
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mov esi,(number_to_out+1)
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.1:
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mov eax,ebx
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and eax,0xF
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add al,'0'
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cmp al,(10+'0')
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jb @f
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add al,('A'-'0'-10)
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@@:
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mov [esi+ecx],al
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shr ebx,4
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loop .1
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dec esi
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call SysMsgBoardStr
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ret
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endp
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end if
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;all initialized data place here
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align 4
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version dd (5 shl 16) or (API_VERSION and 0xFFFF)
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sb_base_port: dd 200h ;don't ask me why - see the code&docs
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sound_dma dd sb_dma_num
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;note that 4th DMA channel doesn't exist, it is used for cascade
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;plugging the first DMA controler to the second
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dma_table db 0x87,0x83,0x81,0x82,0xFF,0x8B,0x89,0x8A
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my_service db 'SOUND',0 ;max 16 chars include zero
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if DEBUG
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number_to_out db '0x00000000',13,10,0
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msgInit db 'detecting hardware...',13,10,0
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msgExit db 'exiting... May be some problems found?',13,10,0
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msgPlay db 'start play',13,10,0
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;msgStop db 'stop play',13,10,0
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msgCallback db 'set_callback received from the mixer!',13,10
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db 'callback handler is: ',0
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msgErrAtchIRQ db 'failed to attach IRQ',(sb_irq_num+'0'),13,10
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db 'owner',39,'s handler: ',0
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msgSucAtchIRQ db 'succesfully attached IRQ',(sb_irq_num+'0')
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db ' as hardcoded',13,10,0
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msgErrRsrvPorts db 'failed to reserve needed ports.',13,10
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db 'Driver may work unstable',13,10,0
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msgSetVol db 'DEV_SET_MASTERVOL call came',13,10,0
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msgGetVol db 'DEV_GET_MASTERVOL call came',13,10,0
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msgErrDMAsetup db 'failed to setup DMA - bad channel',13,10,0
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;-------------------------------------------------------------------------------
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msgDSPFound db 'DSP found at port 2'
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label port_second_digit_num dword at $
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db '00h',13,10,'DSP version '
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sb_DSP_version: db '0.00 - SB'
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sb_DSP_description: db 32,32,32,32,13,10,0
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;-------------------------------------------------------------------------------
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end if
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section '.data' data readable writable align 16
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;all uninitialized data place here
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;pTempBuf rd 1
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callback rd 1
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int_flip_flop rd 1
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sb_master_vol rd 1
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sb_DSP_version_int rd 1
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