Subversion Repositories Kolibri OS

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;;                                                              ;;

;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;

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

;;                                                              ;;

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

;driver sceletone

format MS COFF

DEBUG        equ 1

API_VERSION     equ 0  ;debug

include 'proc32.inc'

include 'imports.inc'

struc IOCTL

{  .handle      dd ?

   .io_code     dd ?

   .input       dd ?

   .inp_size    dd ?

   .output      dd ?

   .out_size    dd ?

}

virtual at 0

  IOCTL IOCTL

end virtual

public START

public service_proc

public version

DRV_ENTRY    equ 1

DRV_EXIT     equ -1

STRIDE       equ 4      ;size of row in devices table

SRV_GETVERSION  equ 0

section '.flat' code readable align 16

proc START stdcall, state:dword

        cmp     [state], 1

        jne     .exit

.entry:

     if DEBUG

        mov     esi, msgInit

        call    SysMsgBoardStr

     end if

        stdcall RegService, my_service, service_proc

        ret

.fail:

.exit:

        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     ebx, [ioctl]

        mov     eax, [ebx+io_code]

        cmp     eax, SRV_GETVERSION

        jne     @F

        mov     eax, [ebx+output]

        cmp     [ebx+out_size], 4

        jne     .fail

        mov     [eax], dword API_VERSION

        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 detect

           locals

            last_bus dd ?

           endl

        xor     eax, eax

        mov     [bus], eax

        inc     eax

        call    PciApi

        cmp     eax, -1

        je      .err

        mov     [last_bus], eax

.next_bus:

        and     [devfn], 0

.next_dev:

        stdcall PciRead32, [bus], [devfn], dword 0

        test    eax, eax

        jz      .next

        cmp     eax, -1

        je      .next

        mov     edi, devices

@@:

        mov     ebx, [edi]

        test    ebx, ebx

        jz      .next

        cmp     eax, ebx

        je      .found

        add     edi, STRIDE

        jmp     @B

.next:

        inc     [devfn]

        cmp     [devfn], 256

        jb      .next_dev

        mov     eax, [bus]

        inc     eax

        mov     [bus], eax

        cmp     eax, [last_bus]

        jna     .next_bus

        xor     eax, eax

        ret

.found:

        xor     eax, eax

        inc     eax

        ret

.err:

        xor     eax, eax

        ret

endp

DEVICE_ID    equ  1234;  pci device id

VENDOR_ID    equ  5678;  device vendor id

;all initialized data place here

align 4

devices      dd (DEVICE_ID shl 16)+VENDOR_ID

             dd 0    ;terminator

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

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

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

msgPCI       db 'PCI accsess not supported',13,10,0

msgFail      db 'device not found',13,10,0

section '.data' data readable writable align 16

;all uninitialized data place here