kolibrios-fun/drivers/netdrv.inc

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2021. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This macro will prepend driver name to all debug output through DEBUGF macro
; The driver name is taken from my_service label
if defined my_service
macro DEBUGF _level,_format, [args] {
common DEBUGF _level, "%s: " # _format, my_service, args
}
end if
include 'pci.inc'
include 'mii.inc'
; Kernel variables
PAGESIZE = 4096
; Network driver types
NET_TYPE_ETH = 1
NET_TYPE_SLIP = 2
; Link state
ETH_LINK_DOWN = 0 ; Link is down
ETH_LINK_UNKNOWN = 1b ; There could be an active link
ETH_LINK_FULL_DUPLEX = 10b ; full duplex flag
ETH_LINK_SPEED_10M = 100b ; 10 Mbit
ETH_LINK_SPEED_100M = 1000b ; 100 Mbit
ETH_LINK_SPEED_1G = 1100b ; Gigabit
ETH_LINK_SPEED_MASK = 1100b
; Macro to easily set i/o addresses to access device.
; In the beginning of a procedure (or ofter edx may have been destroyed),
; always use set_io with offset 0 to reset the variables.
LAST_IO = 0
macro set_io baseaddr, offset {
if offset = 0
mov edx, baseaddr
else if offset = LAST_IO
else
add edx, offset - LAST_IO
end if
LAST_IO = offset
}
; Macro to allocate a contiguous buffer in memory
; And initialise it to all zeros
; This macro will destroy eax, ecx and edi !
macro allocate_and_clear dest, size, err {
; We need to allocate at least 8 pages, if we want a contiguous area in ram
push edx
if (size < 8*4096) & (size > 4096)
invoke KernelAlloc, 8*4096
else
invoke KernelAlloc, size
end if
pop edx
test eax, eax
jz err
mov dest, eax
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
invoke ReleasePages
pop edx
end if
; Clear the allocated buffer
mov ecx, size/4 ; divide by 4 because of DWORD
xor eax, eax
rep stosd
if (size - size/4*4)
mov ecx, size - size/4*4
rep stosb
end if
}
struct 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 ? ;
state dd ? ; link state (0 = no link)
hwacc dd ? ; bitmask stating enabled HW accelerations (offload engines)
bytes_tx dq ? ; Statistics, updated by the driver
bytes_rx dq ? ;
packets_tx dd ? ;
packets_tx_err dd ? ; CRC errors, too long or too short frames
packets_tx_drop dd ? ;
packets_tx_ovr dd ? ; FIFO overrun
packets_rx dd ? ;
packets_rx_err dd ? ; CRC errors, too long or too short frames
packets_rx_drop dd ? ;
packets_rx_ovr dd ? ; FIFO overrun
ends
struct NET_BUFF
NextPtr dd ? ; pointer to next frame in list
PrevPtr dd ? ; pointer to previous frame in list
device dd ? ; ptr to NET_DEVICE structure
type dd ? ; data type (e.g. Ethernet)
length dd ? ; data length
offset dd ? ; offset to actual data (24 bytes for default frame)
data rb 0
ends
struct ETH_DEVICE NET_DEVICE
mac dp ?
dw ? ; qword alignment
ends