383 lines
10 KiB
NASM
383 lines
10 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2015. 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 PE DLL native 0.05
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entry START
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include 'CONFIG.INC'
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section '.flat' code readable writable executable
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include '..\..\struct.inc'
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include '..\..\macros.inc'
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include '..\..\proc32.inc'
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include '..\..\peimport.inc'
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include 'SB16.INC'
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;-------------------------------------------------------------------------------
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proc START c uses ebx esi edi, state:dword, cmdline: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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invoke 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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invoke SysMsgBoardStr
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end if
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xor ebx, ebx
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mov ecx, [sb_base_port]
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lea edx, [ecx+0xF]
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invoke ReservePortArea ;these ports must be mine !
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dec eax
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jnz @f
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if DEBUG
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mov esi, msgErrRsrvPorts
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invoke SysMsgBoardStr
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end if
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jmp .exit
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@@:
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invoke AllocDMA24, sb_buffer_size
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test eax, eax
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jz .exit
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mov [SB16Buffer], eax
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call sb_setup ;clock it, etc
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invoke 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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invoke 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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invoke SysMsgBoardStr
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end if
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invoke 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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invoke 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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proc service_proc stdcall uses ebx esi edi, ioctl:dword
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mov edi, [ioctl]
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mov eax, [edi+IOCTL.io_code]
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cmp eax, SRV_GETVERSION
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jne @F
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mov eax, [edi+IOCTL.output]
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cmp [edi+IOCTL.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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invoke 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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invoke SysMsgBoardStr
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end if
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mov edi, [edi+IOCTL.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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invoke SysMsgBoardStr
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end if
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mov eax, [edi+IOCTL.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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invoke SysMsgBoardStr
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end if
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mov eax, [edi+IOCTL.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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;-------------------------------------------------------------------------------
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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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mov eax, [SB16Buffer]
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stdcall [callback], eax ;for 32k buffer
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else if sb_buffer_size eq full_buffer
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mov eax, [SB16Buffer]
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push eax
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stdcall [callback], eax ;for 64k buffer
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pop eax
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add eax, 16384
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stdcall [callback], eax ;for 64k buffer
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end if
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xor eax, eax
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not 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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mov eax, [SB16Buffer]
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add eax, 16384
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stdcall [callback], eax ;for 32k buffer
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else if sb_buffer_size eq full_buffer
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mov eax, [SB16Buffer]
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add eax, 32768
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push eax
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stdcall [callback], eax ;for 64k buffer
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pop eax
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add eax, 16384
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stdcall [callback], eax ;for 64k buffer
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end if
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xor eax, eax
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not 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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invoke 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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sb_base_port:
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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.',13,10,0
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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:
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db '0.00 - SB'
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sb_DSP_description:
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db 32,32,32,32,13,10,0
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;-------------------------------------------------------------------------------
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end if
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align 4
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data fixups
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end data
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align 4
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SB16Buffer 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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