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kolibrios/kernel/branches/net/drivers/RTL8029.asm
hidnplayr 084d99548d -Refactoring of network drivers. 
-Ommitted unnescessary copying of packets in some drivers.
-Some small updates in TCP (perhaps 50% done ?)

git-svn-id: svn://kolibrios.org@1519 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-07-15 18:54:19 +00:00

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2010. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; RTL8029/ne2000 driver for KolibriOS ;;
;; ;;
;; based on RTL8029.asm driver for menuetos ;;
;; and realtek8029.asm for SolarOS by Eugen Brasoveanu ;;
;; ;;
;; Written by hidnplayr@kolibrios.org ;;
;; with help from CleverMouse ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
format MS COFF
API_VERSION equ 0x01000100
DRIVER_VERSION equ 5
MAX_DEVICES equ 16
DEBUG equ 1
__DEBUG__ equ 1
__DEBUG_LEVEL__ equ 1
include 'proc32.inc'
include 'imports.inc'
include 'fdo.inc'
include 'netdrv.inc'
virtual at ebx
device:
ETH_DEVICE
.io_addr dd ?
.irq_line db ?
.pci_bus db ?
.pci_dev db ?
.flags db ?
.vendor db ?
.asic_base dw ?
.memsize db ?
.rx_start db ?
.tx_start db ?
.bmem dd ?
.rmem dd ?
.romdata rb 16
.size = $ - device
end virtual
public START
public service_proc
public version
P0_PSTART equ 0x01
P0_PSTOP equ 0x02
P0_BOUND equ 0x03
P0_TSR equ 0x04
P0_TPSR equ 0x04
P0_TBCR0 equ 0x05
P0_TBCR1 equ 0x06
P0_ISR equ 0x07
P0_RSAR0 equ 0x08
P0_RSAR1 equ 0x09
P0_RBCR0 equ 0x0A
P0_RBCR1 equ 0x0B
P0_RSR equ 0x0C
P0_RCR equ 0x0C
P0_TCR equ 0x0D
P0_DCR equ 0x0E
P0_IMR equ 0x0F
P1_PAR0 equ 0x01
P1_PAR1 equ 0x02
P1_PAR2 equ 0x03
P1_PAR3 equ 0x04
P1_PAR4 equ 0x05
P1_PAR5 equ 0x06
P1_CURR equ 0x07
P1_MAR0 equ 0x08
CMD_PS0 equ 0x00 ; Page 0 select
CMD_PS1 equ 0x40 ; Page 1 select
CMD_PS2 equ 0x80 ; Page 2 select
CMD_RD2 equ 0x20 ; Remote DMA control
CMD_RD1 equ 0x10
CMD_RD0 equ 0x08
CMD_TXP equ 0x04 ; transmit packet
CMD_STA equ 0x02 ; start
CMD_STP equ 0x01 ; stop
RCR_MON equ 0x20 ; monitor mode
DCR_FT1 equ 0x40
DCR_LS equ 0x08 ; Loopback select
DCR_WTS equ 0x01 ; Word transfer select
ISR_PRX equ 0x01 ; successful recv
ISR_PTX equ 0x02 ; successful xmit
ISR_RXE equ 0x04 ; receive error
ISR_TXE equ 0x08 ; transmit error
ISR_OVW equ 0x10 ; Overflow
ISR_CNT equ 0x20 ; Counter overflow
ISR_RDC equ 0x40 ; Remote DMA complete
ISR_RST equ 0x80 ; reset
IRQ_MASK equ ISR_PRX ; + ISR_PTX + ISR_TXE
RSTAT_PRX equ 0x01 ; successful recv
RSTAT_CRC equ 0x02 ; CRC error
RSTAT_FAE equ 0x04 ; Frame alignment error
RSTAT_OVER equ 0x08 ; FIFO overrun
TXBUF_SIZE equ 6
RXBUF_END equ 32
PAGE_SIZE equ 256
ETH_ALEN equ 6
ETH_HLEN equ 14
ETH_ZLEN equ 60
ETH_FRAME_LEN equ 1514
FLAG_PIO equ 0x01
FLAG_16BIT equ 0x02
ASIC_PIO equ 0
VENDOR_NONE equ 0
VENDOR_WD equ 1
VENDOR_NOVELL equ 2
VENDOR_3COM equ 3
NE_ASIC_OFFSET equ 0x10
NE_RESET equ 0x0F ; Used to reset card
NE_DATA equ 0x00 ; Used to read/write NIC mem
MEM_8192 equ 32
MEM_16384 equ 64
MEM_32768 equ 128
ISA_MAX_ADDR equ 0x400
section '.flat' code readable align 16
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; proc START
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
proc START stdcall, state:dword
cmp [state], 1
jne .exit
.entry:
DEBUGF 2,"Registering rtl8029 service \n"
stdcall RegService, my_service, service_proc
ret
.fail:
.exit:
xor eax, eax
ret
endp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; proc SERVICE_PROC
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
proc service_proc stdcall, ioctl:dword
mov edx, [ioctl]
mov eax, [IOCTL.io_code]
;------------------------------------------------------
;---------------
cmp eax, 0 ;SRV_GETVERSION
jne @F ;---------------
cmp [IOCTL.out_size], 4
jl .fail
mov eax, [IOCTL.output]
mov [eax], dword API_VERSION
xor eax, eax
ret 4
;------------------------------------------------------
@@: ;---------
cmp eax, 1 ;SRV_HOOK
jne @F ;---------
DEBUGF 2,"Checking if device is already listed..\n"
mov eax, [IOCTL.input]
cmp [IOCTL.inp_size], 3
jl .fail
cmp byte [eax], 1
je .pci
cmp [IOCTL.inp_size], 4
jl .fail
cmp byte [eax], 0
je .isa
jmp .fail
.pci:
; check if the device is already listed
mov esi, device_list
mov ecx, [devices]
test ecx, ecx
jz .firstdevice_pci
; mov eax, [IOCTL.input] ; get the pci bus and device numbers
mov ax , [eax+1] ;
.nextdevice:
mov ebx, [esi]
cmp ax , word [device.pci_bus] ; compare with pci and device num in device list (notice the usage of word instead of byte)
je .find_devicenum ; Device is already loaded, let's find it's device number
add esi, 4
loop .nextdevice
.firstdevice_pci:
call create_new_struct
mov eax, [IOCTL.input]
mov cl , [eax+1]
mov [device.pci_bus], cl
mov cl , [eax+2]
mov [device.pci_dev], cl
; Now, it's time to find the base io addres of the PCI device
find_io [device.pci_bus], [device.pci_dev], [device.io_addr]
; We've found the io address, find IRQ now
find_irq [device.pci_bus], [device.pci_dev], [device.irq_line]
jmp .hook
.isa:
mov esi, device_list
mov ecx, [devices]
test ecx, ecx
jz .firstdevice_isa
mov al , [eax+3]
movzx edi, word [eax+1]
.nextdevice_isa:
mov ebx, [esi]
cmp edi, [device.io_addr]
jne .maybenext
cmp al , [device.irq_line]
je find_device_num
.maybenext:
add esi, 4
loop .nextdevice_isa
.firstdevice_isa:
call create_new_struct
mov eax, [IOCTL.input]
movzx ecx , word [eax+1]
mov [device.io_addr], ecx
mov cl, [eax+3]
mov [device.irq_line], cl
.hook:
DEBUGF 2,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\
[device.pci_dev]:1,[device.pci_bus]:1,[device.irq_line]:1,[device.io_addr]:4
call probe ; this function will output in eax
test eax, eax
jnz .err ; If an error occured, exit
mov eax, [devices]
mov [device_list+4*eax], ebx
inc [devices]
mov [device.type], NET_TYPE_ETH
call NetRegDev
cmp eax, -1
jz .err
ret 4
; If the device was already loaded, find the device number and return it in eax
.find_devicenum:
DEBUGF 1,"Trying to find device number of already registered device\n"
mov ebx, eax
call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx
; into a device number in edi
mov eax, edi ; Application wants it in eax instead
DEBUGF 1,"Kernel says: %u\n", eax
ret
.err:
DEBUGF 1,"Failed, removing device structure\n"
stdcall KernelFree, ebx
jmp .fail
;------------------------------------------------------
@@:
.fail:
or eax, -1
ret 4
;------------------------------------------------------
endp
create_new_struct:
cmp [devices], MAX_DEVICES
jge .fail
push edx
stdcall KernelAlloc, device.size
pop edx
test eax, eax
jz .fail
mov ebx, eax
mov [device.reset], reset
mov [device.transmit], transmit
mov [device.get_MAC], read_mac
mov [device.set_MAC], write_mac
mov [device.unload], unload
mov [device.name], my_service
ret
.fail:
add esp, 4
or eax, -1
ret
find_device_num:
DEBUGF 1,"Trying to find device number of already registered device\n"
mov ebx, eax
call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx
; into a device number in edi
mov eax, edi ; Application wants it in eax instead
DEBUGF 1,"Kernel says: %u\n", eax
ret
;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
;; ;;
;; Actual Hardware dependent code starts here ;;
;; ;;
;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
unload: ; TODO
or eax, -1
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; probe: enables the device and clears the rx buffer
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
probe:
mov [device.vendor], VENDOR_NONE
mov [device.bmem], 0
mov eax,[device.io_addr]
add eax, NE_ASIC_OFFSET
mov [device.asic_base], ax
DEBUGF 2,"Trying 16-bit mode\n"
or [device.flags], FLAG_16BIT or FLAG_PIO
mov [device.memsize], MEM_32768
mov [device.tx_start], 64
mov [device.rx_start], TXBUF_SIZE + 64
set_io 0
set_io P0_DCR
mov al, DCR_WTS + DCR_FT1 + DCR_LS
out dx, al
set_io P0_PSTART
mov al, MEM_16384
out dx, al
set_io P0_PSTOP
mov al, MEM_32768
out dx, al
mov esi, test_data
mov di, 16384
mov cx, 14
call eth_pio_write
mov si, 16384
mov cx, 14
lea edi, [device.romdata]
call eth_pio_read
lea esi, [device.romdata]
mov edi, test_data
mov ecx, 13
repz cmpsb
jz ep_set_vendor
DEBUGF 2,"Trying 8-bit mode\n"
mov [device.flags], FLAG_PIO
mov [device.memsize], MEM_16384
mov [device.tx_start], 32
mov [device.rx_start], TXBUF_SIZE + 32
mov dx, [device.asic_base]
add dx, NE_RESET
in al, dx
out dx, al
in al, 0x84
set_io 0
mov al, CMD_RD2 + CMD_STP
out dx, al
set_io P0_RCR
mov al, RCR_MON
out dx, al
set_io P0_DCR
mov al, DCR_FT1 + DCR_LS
out dx, al
set_io P0_PSTART
mov al, MEM_8192
out dx, al
set_io P0_PSTOP
mov al, MEM_16384
out dx, al
mov esi, test_data
mov di, 8192
mov cx, 14
call eth_pio_write
mov si, 8192
mov cx, 14
lea edi, [device.romdata]
call eth_pio_read
mov esi, test_data
lea edi, [device.romdata]
mov ecx, 13
repz cmpsb
jz ep_set_vendor
DEBUGF 2,"This is not a valid ne2000 device!\n"
or eax, -1
ret
ep_set_vendor:
cmp [device.io_addr], ISA_MAX_ADDR
jbe ep_001
DEBUGF 2,"Card is using PCI bus\n"
; or [flags], FLAG_16BIT
ep_001:
mov [device.vendor], VENDOR_NOVELL
ep_check_have_vendor:
mov al, [device.vendor]
cmp al, VENDOR_NONE
; je rtl8029_exit
cmp al, VENDOR_3COM
je reset
mov eax, [device.bmem]
mov [device.rmem], eax
call read_mac
push .hack
sub esp, 6
mov edi, esp
lea esi, [device.mac]
movsd
movsw
jmp write_mac
.hack:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; reset: Place the chip into a virgin state
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
reset:
DEBUGF 2,"Resetting device\n"
; attach int handler
movzx eax, [device.irq_line]
DEBUGF 1,"Attaching int handler to irq %x\n",eax:1
stdcall AttachIntHandler, eax, int_handler, dword 0
; Stop mode
set_io 0
mov al, CMD_PS0 + CMD_RD2 + CMD_STP
out dx, al
set_io P0_DCR
test [device.flags], FLAG_16BIT
jz nsr_001
mov al, 0x49
jmp nsr_002
nsr_001:
mov al, 0x48
nsr_002:
out dx, al
; clear remote bytes count
set_io 0
xor al, al
set_io P0_RBCR0
out dx, al
set_io P0_RBCR1
out dx, al
; initialize Receive configuration register
set_io P0_RCR
mov al, 0x20 ; monitor mode
out dx, al
; transmit configuration register
set_io P0_TCR
mov al, 2 ; internal loopback
out dx, al
; transmit page stuff
set_io P0_TPSR
mov al, [device.tx_start]
out dx, al
; set receive control register ;;;;
set_io P0_RCR
mov al, 4 ; accept broadcast
out dx, al
; pagestart
set_io P0_PSTART
mov al, [device.rx_start]
out dx, al
; pagestop
set_io P0_PSTOP
mov al, [device.memsize]
out dx, al
; page boundary
set_io P0_BOUND
mov al, [device.memsize]
dec al
out dx, al
;;clear IRQ mask
; set_io P0_IMR
; xor al, al
; out dx, al
set_io 0
mov al, CMD_PS1 + CMD_RD2 + CMD_STP ; page 1, stop mode
out dx, al
set_io P1_CURR
mov al, [device.rx_start]
out dx, al
set_io 0
mov al, CMD_PS0 + CMD_RD2 + CMD_STA ; go to page 0
out dx, al
; Read MAC address
call read_mac
; clear interupt status
set_io 0
set_io P0_ISR
mov al, 0xff
out dx, al
; set IRQ mask
set_io P0_IMR
mov al, IRQ_MASK
out dx, al
;; start mode
; set_io 0
; mov al, CMD_STA
; out dx, al
; clear transmit control register
set_io P0_TCR
mov al, 0 ; no loopback
out dx, al
; clear packet/byte counters
xor eax, eax
lea edi, [device.bytes_tx]
mov ecx, 6
rep stosd
; Set the mtu, kernel will be able to send now
mov [device.mtu], 1514
; Indicate that we have successfully reset the card
DEBUGF 2,"Done!\n"
ret
;***************************************************************************
; Function
; transmit
; buffer in [esp+4], size in [esp+8], pointer to device struct in ebx
;***************************************************************************
; TODO: use a RING-buffer
align 4
transmit:
mov esi, [esp + 4]
mov ecx, [esp + 8]
DEBUGF 2,"Transmitting packet, buffer:%x, size:%u\n",esi, ecx
DEBUGF 2,"To: %x-%x-%x-%x-%x-%x From: %x-%x-%x-%x-%x-%x Type:%x%x\n",[esi+0]:2,[esi+1]:2,[esi+2]:2,[esi+3]:2,[esi+4]:2,[esi+5]:2,[esi+6]:2,[esi+7]:2,[esi+8]:2,[esi+9]:2,[esi+10]:2,[esi+11]:2,[esi+13]:2,[esi+12]:2
cmp ecx, ETH_FRAME_LEN
jg .err ; packet is too long
cmp ecx, 60
jl .err ; packet is too short
movzx edi, [device.tx_start]
shl edi, 8
push cx
call eth_pio_write
pop cx
set_io 0
mov al, CMD_PS0 + CMD_RD2 + CMD_STA
out dx, al
set_io P0_TPSR
mov al, [device.tx_start]
out dx, al
set_io P0_TBCR0
mov al, cl
out dx, al
set_io P0_TBCR1
mov al, ch
out dx, al
set_io 0
mov al, CMD_PS0 + CMD_TXP + CMD_RD2 + CMD_STA
out dx, al
DEBUGF 2," - Packet Sent!\n"
inc [device.packets_tx]
mov eax, [esp + 8] ; Get packet size in eax
add dword [device.bytes_tx], eax
adc dword [device.bytes_tx + 4], 0
.finish:
call Kernelfree
add esp, 4
xor eax, eax
ret
.err:
call Kernelfree
add esp, 4
or eax, -1
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; Interrupt handler
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
int_handler:
DEBUGF 2,"IRQ %x ",eax:2
; find pointer of device wich made INT occur
mov esi, device_list
mov ecx, [devices]
.nextdevice:
mov ebx, [esi]
set_io 0
set_io P0_ISR
in al, dx
DEBUGF 2,"isr %x ",eax:2
test al, ISR_PRX ; packet received ok ?
jnz .rx
add esi, 4
loop .nextdevice
ret
; looks like we've found a device wich received a packet..
.rx:
stdcall KernelAlloc, ETH_FRAME_LEN ; size doesnt really matter as packet size is smaller then kernel's page size
test eax, eax
jz .fail_2
;--------------------------------------
; allocate memory for temp variables in stack
sub esp, 14+8
eth_type equ esp
pkthdr equ esp + 2
pktoff equ esp + 6
eth_rx_data_ptr equ esp + 8
eth_tmp_len equ esp + 12
; These will be used by eth_receiver when the packet gets there
pointer equ esp + 14
size equ esp + 18
;-------------------------------------
mov [pointer], eax
mov [eth_rx_data_ptr], eax
set_io P0_BOUND
in al, dx
inc al
cmp al, [device.memsize]
jb .nsp_001
mov al, [device.rx_start]
.nsp_001:
mov ch, al
set_io 0
mov al, CMD_PS1
out dx, al
set_io P1_CURR
in al, dx ; get current page
mov cl, al
set_io 0
mov al, CMD_PS0
out dx, al
cmp cl, [device.memsize]
jb .nsp_002
mov cl, [device.rx_start]
.nsp_002:
cmp cl, ch
je .fail
xor ax, ax
mov ah, ch
mov [pktoff], ax
mov al, [device.flags]
test al, FLAG_PIO
jz .nsp_003
mov si, word [pktoff]
lea edi, [pkthdr]
mov cx, 4
call eth_pio_read
jmp .nsp_004
.nsp_003:
mov edi, [device.rmem]
movzx eax, word [pktoff]
add edi, eax
mov eax, [edi]
mov [pkthdr], eax
.nsp_004:
add word[pktoff] , 4
xor eax, eax
mov ax , [pkthdr + 2]
sub ax , 4
DEBUGF 2,"Received %u bytes\n",eax
add dword [device.bytes_rx], eax ; Update stats
adc dword [device.bytes_rx + 4], 0
inc dword [device.packets_rx] ;
mov [eth_tmp_len], ax
mov dword[size], eax
cmp ax, ETH_ZLEN
jb .fail
cmp ax , ETH_FRAME_LEN
ja .fail
mov al , [pkthdr]
test al , RSTAT_PRX
jz .fail
; Right, we can now get the data
movzx esi, [device.memsize]
sub si , [pktoff]
cmp [eth_tmp_len], si
jbe .nsp_005
DEBUGF 2,"WRAP!\n"
mov al , [device.flags]
test al , FLAG_PIO
jz .nsp_006
push esi
mov cx , si
mov si , [pktoff+4]
mov edi, [eth_rx_data_ptr+4]
call eth_pio_read
pop esi
jmp .nsp_007
.nsp_006:
DEBUGF 2,"PIO mode not supported by HW!\n"
; Not implemented, as we are using PIO mode on this card
.nsp_007:
xor al, al
mov ah, [device.rx_start]
mov [pktoff], ax
add [eth_rx_data_ptr], esi
sub [eth_tmp_len], si
.nsp_005:
test [device.flags], FLAG_PIO
jz .nsp_008
movzx esi, word [pktoff]
movzx ecx, word [eth_tmp_len]
mov edi, [eth_rx_data_ptr]
call eth_pio_read
jmp .nsp_009
.nsp_008:
DEBUGF 2,"PIO mode not supported by HW!\n"
; Not implemented, as we are using PIO mode on this card
.nsp_009:
mov al, [pkthdr+1]
cmp al, [device.rx_start]
jne .nsp_010
mov al, [device.memsize]
.nsp_010:
set_io 0
set_io P0_BOUND
dec al
out dx, al
add esp, 14
jmp EthReceiver ; send it to the kernel
.fail:
add esp, 14+8
.fail_2:
DEBUGF 2,"done\n"
ret
;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Write MAC address ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;
align 4
write_mac: ; in: mac on stack (6 bytes)
DEBUGF 1,"Writing MAC: "
set_io 0
mov al, CMD_PS1; + CMD_RD2 + CMD_STP
out dx, al
set_io P1_PAR0
mov esi, esp
mov cx, 6
@@:
lodsb
out dx, al
inc dx
loopw @r
add esp, 6
; Notice this procedure does not ret, but continues to read_mac instead.
;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Read MAC address ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;
read_mac:
DEBUGF 1,"Reading MAC: "
; set_io 0
; mov al, CMD_PS1; + CMD_RD2 + CMD_STP ; select page 1
; out dx, al
;
; set_io P1_PAR0
; lea edi, [mac]
;
; mov cx, 6
; .loop:
; in al, dx
; stosb
; inc dx
; loopw .loop
;
; set_io 0
; mov al, CMD_PS0; + CMD_RD2 + CMD_STA ; set page back to 0
; out dx, al
mov si, 0
mov cx, 16
lea edi, [device.romdata]
call eth_pio_read
lea esi, [device.romdata]
lea edi, [device.mac]
mov ecx, 6
.loop:
movsb
test [device.flags], FLAG_16BIT
jz .8bit
inc esi
.8bit:
loop .loop
DEBUGF 1,"%x-%x-%x-%x-%x-%x\n",[edi-6]:2,[edi-5]:2,[edi-4]:2,[edi-3]:2,[edi-2]:2,[edi-1]:2
ret
;***************************************************************************
; Function
; eth_pio_read
;
; Description
; Read a frame from the ethernet card via Programmed I/O
; src in si
; cnt in cx
; dst in edi
;***************************************************************************
eth_pio_read:
DEBUGF 1,"Eth PIO Read from %x to %x, %u bytes ",si,edi,cx
set_io 0
mov al, CMD_RD2 + CMD_STA
out dx, al
mov al, cl
set_io P0_RBCR0
out dx, al
mov al, ch
set_io P0_RBCR1
out dx, al
mov ax, si
set_io P0_RSAR0
out dx, al
shr ax, 8
set_io P0_RSAR1
out dx, al
mov al, CMD_RD0 + CMD_STA
set_io 0
out dx, al
mov dx, [device.asic_base]
test [device.flags], FLAG_16BIT
jz epr_003
DEBUGF 1,"in 16-bits mode"
shr cx, 1 ; note that if the number was odd, carry flag will be set
pushf ; save the flags for later
epr_002:
in ax, dx
stosw
loopw epr_002
inc cx
popf
jnc epr_004
epr_003:
in al, dx
stosb
loopw epr_003
epr_004:
set_io 0
set_io P0_ISR
epr_005: ; Wait for Remote DMA Complete
in al, dx
test al, ISR_RDC
jz epr_005
; and al, not ISR_RDC
out dx, al ; clear the bit
DEBUGF 1,"\n"
ret
;***************************************************************************
; Function
; eth_pio_write
;
; Description
; writes a frame to the ethernet card via Programmed I/O
; dst in di
; cnt in cx
; src in esi
;***************************************************************************
eth_pio_write:
DEBUGF 1,"Eth PIO Write from %x to %x, %u bytes ",esi,di,cx
set_io 0
mov al, CMD_RD2 + CMD_STA
out dx, al
set_io P0_ISR
mov al, ISR_RDC
out dx, al
set_io P0_RBCR0
mov al, cl
out dx, al
set_io P0_RBCR1
mov al, ch
out dx, al
mov ax, di
set_io P0_RSAR0
out dx, al
shr ax, 8
set_io P0_RSAR1
out dx, al
set_io 0
mov al, CMD_RD1 + CMD_STA
out dx, al
mov dx, [device.asic_base]
test [device.flags], FLAG_16BIT
jz epw_003
DEBUGF 1,"in 16-bits mode"
shr cx, 1 ; note that if the number was odd, carry flag will be set
pushf ; save the flags for later
epw_002:
lodsw
out dx, ax
loopw epw_002
popf
jnc epw_004
inc cx
epw_003:
lodsb
out dx, al
loopw epw_003
epw_004:
set_io 0
set_io P0_ISR
epw_005: ; Wait for Remote DMA Complete
in al, dx
test al, ISR_RDC
jz epw_005
; and al, not ISR_RDC
out dx, al ; clear the bit
DEBUGF 1,"\n"
ret
;all initialized data place here
align 4
devices dd 0
version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF)
my_service db 'RTL8029/ne2000',0 ;max 16 chars include zero
device_1 db 'Realtek 8029',0
device_2 db 'Realtek 8019',0
device_3 db 'Realtek 8019AS',0
device_4 db 'ne2000',0
device_5 db 'DP8390',0
test_data db 'NE*000 memory',0
include_debug_strings
section '.data' data readable writable align 16 ;place all uninitialized data place here
device_list rd MAX_DEVICES
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