kolibrios/kernel/branches/Kolibri-A/trunk/drivers/sceletone.asm

178 lines
3.6 KiB
NASM
Raw Normal View History

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2007. 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'
OS_BASE equ 0;
new_app_base equ 0x60400000
PROC_BASE equ OS_BASE+0x0080000
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