kolibrios/kernel/branches/net/drivers/netdrv.inc

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
include 'bus/pci.inc'
include 'bus/mii.inc'
; Kernel variables
PAGESIZE = 4096
PG_SW = 0x003
PG_NOCACHE = 0x018
; network driver types
NET_TYPE_ETH = 1
NET_TYPE_SLIP = 2
; link state
ETH_LINK_DOWN = 0 ; Link is down
ETH_LINK_UNKOWN = 1b ; There could be an active link
ETH_LINK_FD = 10b ; full duplex flag
ETH_LINK_10M = 100b ; 10 mbit
ETH_LINK_100M = 1000b ; 100 mbit
ETH_LINK_1G = 10000b ; gigabit
LAST_IO = 0
macro set_io addr {
if addr = 0
mov edx, [device.io_addr]
else if addr = LAST_IO
else
add edx, addr - LAST_IO
end if
LAST_IO = addr
}
macro allocate_and_clear dest, size, err {
; We need to allocate at least 8 pages, if we want a continuous memory in ram
push edx
if (size < 8*4096) & (size > 4096)
stdcall KernelAlloc, 8*4096
else
stdcall KernelAlloc, size
end if
pop edx
test eax, eax
jz err
mov dest, eax ; Save the address to it into the device struct
mov edi, eax ; look at last part of code!
; Release the unused pages (if any)
if (size < 8*4096) & (size > 4096)
add eax, (size/4096+1)*4096
mov ecx, 8-(size/4096+1)
push edx
call ReleasePages
pop edx
end if
; Clear the allocated buffer
mov ecx, size/4 ; divide by 4 because of DWORD
xor eax, eax
rep stosd
}
struc IOCTL {
.handle dd ?
.io_code dd ?
.input dd ?
.inp_size dd ?
.output dd ?
.out_size dd ?
}
virtual at edx
IOCTL IOCTL
end virtual
if used null_op
align 4
null_op:
or eax, -1
ret
end if
macro GetRealAddr { ; input and output is eax
push ax
call GetPgAddr
and word[esp], PAGESIZE - 1
or ax, word[esp]
inc esp
inc esp
}
macro NET_DEVICE {
.type dd ? ; Type field
.mtu dd ? ; Maximal Transmission Unit
.name dd ? ; Ptr to 0 terminated string
.unload dd ? ; Ptrs to driver functions
.reset dd ? ;
.transmit dd ? ;
.bytes_tx dq ? ; Statistics, updated by the driver
.bytes_rx dq ? ;
.packets_tx dd ? ;
.packets_rx dd ? ;
.state dd ? ; link state (0 = no link)
.hwacc dd ? ; bitmask stating enabled HW accelerations
.end:
}
macro ETH_DEVICE {
NET_DEVICE
.mac dp ?
dw ? ; qword alignment
}
macro SLIP_DEVICE {
NET_DEVICE
}