XenOn/kolibrios-fun
1
1
Fork 0
forked from KolibriOS/kolibrios
Code Pull Requests Wiki Activity
8fa80be372
kolibrios-fun/kernel/branches/net/drivers/i8255x.asm

1139 lines
25 KiB
NASM
Raw Normal View History

New branch - network experimental code git-svn-id: svn://kolibrios.org@1159 a494cfbc-eb01-0410-851d-a64ba20cac60
2009-09-17 13:55:38 +02:00
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; I8255x (Intel eepro 100) driver for KolibriOS ;;
;; ;;
;; Written by hidnplayr@kolibrios.org ;;
;; ;;
;; v0.0 - march 2009 ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;; current status (september 2009) - INCOMPLETE ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
format MS COFF
API_VERSION equ 0x01000100
DEBUG equ 1
__DEBUG__ equ 1
__DEBUG_LEVEL__ equ 1
include 'proc32.inc'
include 'imports.inc'
include 'fdo.inc'
OS_BASE equ 0;
new_app_base equ 0x60400000
PROC_BASE equ OS_BASE+0x0080000
public START
public service_proc
public version
struc IOCTL {
.handle dd ?
.io_code dd ?
.input dd ?
.inp_size dd ?
.output dd ?
.out_size dd ?
}
virtual at 0
IOCTL IOCTL
end virtual
struc ETH_DEVICE {
; pointers to procedures
.unload dd ?
.reset dd ?
.transmit dd ?
.set_MAC dd ?
.get_MAC dd ?
.set_mode dd ?
.get_mode dd ?
; status
.bytes_tx dd ?
.bytes_rx dd ?
.packets_tx dd ?
.packets_rx dd ?
.mode dd ? ; This dword contains cable status (10mbit/100mbit, full/half duplex, auto negotiation or not,..)
.name dd ?
; device specific
.io_addr dd ?
.pci_bus db ?
.pci_dev db ?
.irq_line db ?
.status dw ? ;
.command dw ? ;
.link dd ? ;
.rx_buf_addr dd ? ;
.count dw ? ;
.size dw ? ;
.packet dd ? ;
.eeprom_data rd 16
.txfd:
.txfd_status dw ?
.txfd_command dw ?
.txfd_link dd ?
.txfd_tx_desc_addr dd ?
.txfd_count dd ?
.txfd_tx_buf_addr0 dd ?
.txfd_tx_buf_size0 dd ?
.txfd_tx_buf_addr1 dd ?
.txfd_tx_buf_size1 dd ?
.size_:
}
virtual at 0
device ETH_DEVICE
end virtual
lstats:
tx_good_frames: dd 0
tx_coll16_errs: dd 0
tx_late_colls: dd 0
tx_underruns: dd 0
tx_lost_carrier: dd 0
tx_deferred: dd 0
tx_one_colls: dd 0
tx_multi_colls: dd 0
tx_total_colls: dd 0
rx_good_frames: dd 0
rx_crc_errs: dd 0
rx_align_errs: dd 0
rx_resource_errs: dd 0
rx_overrun_errs: dd 0
rx_colls_errs: dd 0
rx_runt_errs: dd 0
done_marker: dd 0
confcmd:
.status: dw 0
.command: dw 0
.link: dd 0
confcmd_data: db 22, 0x08, 0, 0, 0, 0x80, 0x32, 0x03, 1
db 0, 0x2e, 0, 0x60, 0, 0xf2, 0x48, 0, 0x40, 0xf2
db 0x80, 0x3f, 0x05
MAX_I8255x equ 16 ; Max number of devices this driver may handle
; PCI Bus defines
PCI_HEADER_TYPE equ 0x0e ;8 bit
PCI_BASE_ADDRESS_0 equ 0x10 ;32 bit
PCI_BASE_ADDRESS_5 equ 0x24 ;32 bits
PCI_BASE_ADDRESS_SPACE_IO equ 0x01
PCI_VENDOR_ID equ 0x00 ;16 bit
PCI_BASE_ADDRESS_IO_MASK equ 0xFFFFFFFC
;/***********************************************************************/
;/* I82557 related defines */
;/***********************************************************************/
; Serial EEPROM section.
; A "bit" grungy, but we work our way through bit-by-bit :->.
; EEPROM_Ctrl bits.
EE_SHIFT_CLK equ 0x01 ; EEPROM shift clock.
EE_CS equ 0x02 ; EEPROM chip select.
EE_DATA_WRITE equ 0x04 ; EEPROM chip data in.
EE_DATA_READ equ 0x08 ; EEPROM chip data out.
EE_WRITE_0 equ 0x4802
EE_WRITE_1 equ 0x4806
EE_ENB equ 0x4802
; The EEPROM commands include the alway-set leading bit.
EE_READ_CMD equ 6
; The SCB accepts the following controls for the Tx and Rx units:
CU_START equ 0x0010
CU_RESUME equ 0x0020
CU_STATSADDR equ 0x0040
CU_SHOWSTATS equ 0x0050 ; Dump statistics counters.
CU_CMD_BASE equ 0x0060 ; Base address to add to add CU commands.
CU_DUMPSTATS equ 0x0070 ; Dump then reset stats counters.
RX_START equ 0x0001
RX_RESUME equ 0x0002
RX_ABORT equ 0x0004
RX_ADDR_LOAD equ 0x0006
RX_RESUMENR equ 0x0007
INT_MASK equ 0x0100
DRVR_INT equ 0x0200 ; Driver generated interrupt.
section '.flat' code readable align 16
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; proc START ;;
;; ;;
;; (standard driver proc) ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
proc START stdcall, state:dword
cmp [state], 1
jne .exit
.entry:
DEBUGF 1,"Loading I8255x driver\n"
stdcall RegService, my_service, service_proc
ret
.fail:
.exit:
xor eax, eax
ret
endp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; proc SERVICE_PROC ;;
;; ;;
;; (standard driver proc) ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
proc service_proc stdcall, ioctl:dword
mov edx, [ioctl]
mov eax, [ebx+IOCTL.io_code]
;------------------------------------------------------
cmp eax, 0 ;SRV_GETVERSION
jne @F
cmp [edx+IOCTL.out_size], 4
jl .fail
mov eax, [edx+IOCTL.output]
mov [eax], dword API_VERSION
xor eax, eax
ret
;------------------------------------------------------
@@:
cmp eax, 1 ;SRV_HOOK
jne .fail
mov eax, [esp]
DEBUGF 1,"esp=%x [esp]=%x\n",esp,eax
cmp [edx + IOCTL.inp_size], 3 ; Data input must be at least 3 bytes
jl .fail
mov eax, [edx + IOCTL.input]
cmp byte [eax], 1 ; 1 means device number and bus number (pci) are given
jne .fail ; other types arent supported for this card yet
; check if the device is already listed
mov esi, I8255x_LIST
mov ecx, [I8255x_DEV]
test ecx, ecx
jz .firstdevice
mov eax, [edx+IOCTL.input] ; get the pci bus and device numbers
mov bx , [eax+1] ;
.nextdevice:
DEBUGF 1,"1"
lodsd
cmp bx , word [eax + device.pci_bus] ; compare with pci and device num in RTL8139 list (notice the usage of word instead of byte)
je .find_devicenum ; Device is already loaded, let's find it's device number
loop .nextdevice
; This device doesnt have its own eth_device structure yet, lets create one
.firstdevice:
cmp [I8255x_DEV], MAX_I8255x ; First check if the driver can handle one more card
jge .fail
push edx
stdcall KernelAlloc, device.size ; Allocate the buffer for eth_device structure
pop edx
test eax, eax
jz .fail
mov ebx, eax ; ebx is always used as a pointer to the structure (in driver, but also in kernel code)
; Fill in the direct call addresses into the struct
mov dword [ebx+device.reset], reset
mov dword [ebx+device.transmit], transmit
; mov dword [ebx+device.get_MAC], read_mac
; mov dword [ebx+device.set_MAC], write_mac
mov dword [ebx+device.unload], unload
mov dword [ebx+device.name], devicename
; save the pci bus and device numbers
mov eax, [edx+IOCTL.input]
mov cl , [eax+1]
mov [ebx+device.pci_bus], cl
mov cl , [eax+2]
mov [ebx+device.pci_dev], cl
; Now, it's time to find the base io addres of the PCI device
; TODO: implement check if bus and dev exist on this machine
mov edx, PCI_BASE_ADDRESS_0
.reg_check:
movzx eax, byte [ebx+device.pci_bus]
movzx ecx, byte [ebx+device.pci_dev]
push edx ecx
stdcall PciRead16, eax ,ecx ,edx
pop ecx edx
mov [ebx+device.io_addr], eax
and eax, PCI_BASE_ADDRESS_IO_MASK
test eax, eax
jz .inc_reg
mov eax, [ebx+device.io_addr]
and eax, PCI_BASE_ADDRESS_SPACE_IO
test eax, eax
jz .inc_reg
mov eax, [ebx+device.io_addr]
and eax, PCI_BASE_ADDRESS_IO_MASK
mov [ebx+device.io_addr], eax
jmp .got_io
.inc_reg:
add edx, 4
cmp edx, PCI_BASE_ADDRESS_5
jbe .reg_check
.got_io:
; We've found the io address, find IRQ now
movzx eax, byte [ebx+device.pci_bus]
movzx ecx, byte [ebx+device.pci_dev]
push ebx
stdcall PciRead8, eax ,ecx ,0x3c ; 0x3c is the offset where irq can be found
pop ebx
mov byte [ebx+device.irq_line], al
DEBUGF 1,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\
[ebx+device.pci_dev]:1,[ebx+device.pci_bus]:1,[ebx+device.irq_line]:1,[ebx+device.io_addr]:4
; Allocate the Receive buffer
stdcall KernelAlloc, dword (RX_BUFFER_SIZE+MAX_ETH_FRAME_SIZE)
test eax, eax
jz .err
mov [ebx+device.rx_buffer], eax ; Save the address to it into the device struct
; Now, Clear the allocated buffer
cld
mov edi, eax
mov ecx, (RX_BUFFER_SIZE)/4 ; divide by 4 because we are going to use DWORD
xor eax, eax
rep stosd
; Allocate the Transmit Buffer
stdcall KernelAlloc, dword (TX_BUFFER_SIZE)
test eax, eax
jz .err
mov [ebx+device.tx_buffer], eax
; This one needs to be cleared too..
mov edi, eax
mov ecx, (TX_BUFFER_SIZE)/4
xor eax, eax
rep stosd
; Ok, the eth_device structure is ready, let's probe the device
call probe ; this function will output in eax
test eax, eax
jnz .err ; If an error occured, exit
mov eax, [I8255x_DEV] ; Add the device structure to our device list
mov [I8255x_LIST+4*eax], ebx ; (IRQ handler uses this list to find device)
inc [I8255x_DEV] ;
jmp EthRegDev ; Register the device to kernel (ebx points to device struct)
; Notice the jump instead of call, it is the same as
;
; call EthRegDev
; ret
;
; Also notice that the value EthRegDev returned in eax, will be returned to
; the caller application
; 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 EthStruc2Dev ; 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
; If an error occured, remove all allocated data and exit (returning -1 in eax)
.err:
stdcall KernelFree, dword [ebx+device.rx_buffer]
stdcall KernelFree, dword [ebx+device.tx_buffer]
stdcall KernelFree, ebx
.fail:
or eax, -1
ret
;------------------------------------------------------
endp
;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
;; ;;
;; Actual Hardware dependent code starts here ;;
;; ;;
;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
unload:
; TODO: (in this particular order)
;
; - Stop the device
; - Detach int handler
; - Remove device from local list (RTL8139_LIST)
; - call unregister function in kernel
; - Remove all allocated structures and buffers the card used
or eax,-1
ret
;***************************************************************************
; Function
; I8255x_probe
; Description
; Searches for an ethernet card, enables it and clears the rx buffer
; If a card was found, it enables the ethernet -> TCPIP link
;
;***************************************************************************
probe:
DEBUGF 1," Probing i8255x device: "
; enable the device
movzx eax, byte [ebx+device.pci_bus]
movzx ecx, byte [ebx+device.pci_dev]
stdcall PciRead16, eax ,ecx ,PCI_REG_CMD
mov cx , ax
or cx , 0x05
movzx eax, byte [ebx+device.pci_bus]
movzx edx, byte [ebx+device.pci_dev]
stdcall PciWrite16, eax ,edx ,PCI_REG_CMD, ecx
; do something else TODO
mov ebx, 0x6000000
mov ecx, 27
call do_eeprom_cmd
and eax, 0xffe0000
cmp eax, 0xffe0000
je bige
mov ebx, 0x1800000
mov ecx, 0x40
jmp doread
bige:
mov ebx, 0x6000000
mov ecx, 0x100
doread:
; do-eeprom-cmd will destroy all registers
; we have eesize in ecx
; read_cmd in ebx
; Ignore full eeprom - just load the mac address
mov ecx, 0
drlp:
push ecx ; save count
push ebx
mov eax, ecx
shl eax, 16
or ebx, eax
mov ecx, 27
call do_eeprom_cmd
pop ebx
pop ecx
mov edx, ecx
shl edx, 2
mov esi, eeprom_data
add esi, edx
mov [esi], eax
inc ecx
cmp ecx, 16
jne drlp
; OK, we have the MAC address.
;***************************************************************************
; Function
; I8255x_reset
; Description
; Place the chip (ie, the ethernet card) into a virgin state
; No inputs
; All registers destroyed
;
;***************************************************************************
reset:
; Now reset the card
mov edx, [ebx+device.io_addr]
add dx, 8 ; SCBPort
xor eax, eax ; The reset cmd == 0
out dx, eax
mov esi, 10
call delay_ms ; Give the card time to warm up.
mov eax, lstats
mov edx, [ebx+device.io_addr]
add edx, 4 ; SCBPointer
out dx, eax
mov eax, 0x0140 ; INT_MASK | CU_STATSADDR
mov edx, [ebx+device.io_addr]
add edx, 2 ; SCBCmd
out dx, ax
call wait_for_cmd_done
mov eax, 0
mov edx, [ebx+device.io_addr]
add edx, 4 ; SCBPointer
out dx, eax
mov eax, 0x0106 ; INT_MASK | RX_ADDR_LOAD
mov edx, [ebx+device.io_addr]
add edx, 2 ; SCBCmd
out dx, ax
call wait_for_cmd_done
; build rxrd structure
mov ax, 0x0001
mov [ebx+device.status], ax
mov ax, 0x0000
mov [rxfd_command], ax
mov eax, rxfd_status
sub eax, OS_BASE
mov [ebx+device.link], eax
mov eax, Ether_buffer
sub eax, OS_BASE
mov [ebx+device.rx_buf_addr], eax
mov ax, 0
mov [ebx+device.count], ax
mov ax, 1528
mov [ebx+device.size], ax
mov edx, [ebx+device.io_addr]
add edx, 4 ; SCBPointer
mov eax, rxfd_status
sub eax, OS_BASE
out dx, eax
mov edx, [ebx+device.io_addr]
add edx, 2 ; SCBCmd
mov ax, 0x0101 ; INT_MASK | RX_START
out dx, ax
call wait_for_cmd_done
; start the receiver
mov ax, 0
mov [ebx+device.status], ax
mov ax, 0xc000
mov [ebx+device.command], ax
mov edx, [ebx+device.io_addr]
add edx, 4 ; SCBPointer
mov eax, rxfd_status
sub eax, OS_BASE
out dx, eax
mov edx, [ebx+device.io_addr]
add edx, 2 ; SCBCmd
mov ax, 0x0101 ; INT_MASK | RX_START
out dx, ax
; Init TX Stuff
mov edx, [ebx+device.io_addr]
add edx, 4 ; SCBPointer
mov eax, 0
out dx, eax
mov edx, [ebx+device.io_addr]
add edx, 2 ; SCBCmd
mov ax, 0x0160 ; INT_MASK | CU_CMD_BASE
out dx, ax
call wait_for_cmd_done
; Set TX Base address
; First, set up confcmd values
mov ax, 2
mov [confcmd_command], ax
mov eax, txfd
sub eax, OS_BASE
mov [confcmd_link], eax
mov ax, 1
mov [txfd_command], ax ; CmdIASetup
mov ax, 0
mov [txfd_status], ax
mov eax, confcmd
sub eax, OS_BASE
mov [txfd_link], eax
; ETH_ALEN is 6 bytes
mov esi, eeprom_data
mov edi, node_addr
mov ecx, 3
drp000:
mov eax, [esi]
mov [edi], al
shr eax, 8
inc edi
mov [edi], al
inc edi
add esi, 4
loop drp000
; Hard code your MAC address into node_addr at this point,
; If you cannot read the MAC address from the eeprom in the previous step.
; You also have to write the mac address into txfd_tx_desc_addr, rather
; than taking data from eeprom_data
mov esi, eeprom_data
mov edi, txfd_tx_desc_addr
mov ecx, 3
drp001:
mov eax, [esi]
mov [edi], al
shr eax, 8
inc edi
mov [edi], al
inc edi
add esi, 4
loop drp001
mov esi, eeprom_data + (6 * 4)
mov eax, [esi]
shr eax, 8
and eax, 0x3f
cmp eax, 4 ; DP83840
je drp002
cmp eax, 10 ; DP83840A
je drp002
jmp drp003
drp002:
mov ebx, [esi]
and ebx, 0x1f
push ebx
mov ecx, 23
call mdio_read
pop ebx
or eax, 0x0422
mov ecx, 23
mov edx, eax
call mdio_write
drp003:
mov ax, 0x4002 ; Cmdsuspend | CmdConfigure
mov [confcmd_command], ax
mov ax, 0
mov [confcmd_status], ax
mov eax, txfd
mov [confcmd_link], eax
mov ebx, confcmd_data
mov al, 0x88 ; fifo of 8 each
mov [ebx + 1], al
mov al, 0
mov [ebx + 4], al
mov al, 0x80
mov [ebx + 5], al
mov al, 0x48
mov [ebx + 15], al
mov al, 0x80
mov [ebx + 19], al
mov al, 0x05
mov [ebx + 21], al
mov eax, txfd
sub eax, OS_BASE
mov edx, [ebx+device.io_addr]
add edx, 4 ; SCBPointer
out dx, eax
mov eax, 0x0110 ; INT_MASK | CU_START
mov edx, [ebx+device.io_addr]
add edx, 2 ; SCBCmd
out dx, ax
call wait_for_cmd_done
jmp skip
; wait for thing to start
drp004:
mov ax, [txfd_status]
test ax, ax
jz drp004
skip:
; Indicate that we have successfully reset the card
xor eax, eax
ret
;***************************************************************************
; Function
; I8255x_transmit
;
; Description
; Transmits a packet of data via the ethernet card
; Pointer to 48 bit destination address in edi
; Type of packet in bx
; size of packet in ecx
; pointer to packet data in esi
;
;***************************************************************************
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Transmit ;;
;; ;;
;; In: buffer pointer in [esp] ;;
;; size of buffer in [esp+4] ;;
;; pointer to device structure in ebx ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
transmit:
DEBUGF 1,"Transmitting packet, buffer:%x, size:%u\n",[esp],[esp+4]
mov eax, [esp]
DEBUGF 1,"To: %x-%x-%x-%x-%x-%x From: %x-%x-%x-%x-%x-%x Type:%x%x\n",\
[eax+00]:2,[eax+01]:2,[eax+02]:2,[eax+03]:2,[eax+04]:2,[eax+05]:2,\
[eax+06]:2,[eax+07]:2,[eax+08]:2,[eax+09]:2,[eax+10]:2,[eax+11]:2,\
[eax+13]:2,[eax+12]:2
cmp dword [esp+4], MAX_ETH_FRAME_SIZE
jg .finish ; packet is too long
cmp dword [esp+4], 60
jl .finish ; packet is too short
; mov [hdr_type], bx
; mov eax, [edi]
; mov [hdr_dst_addr], eax
; mov ax, [edi+4]
; mov [hdr_dst_addr+4], ax
; mov eax, [node_addr]
; mov [hdr_src_addr], eax
; mov ax, [node_addr+4]
; mov [hdr_src_addr+4], ax
mov edx, [ebx+device.io_addr]
in ax, dx
and ax, 0xfc00
out dx, ax
mov [ebx+device.txfd_status], 0
mov [ebx+device.txfd_command], 0x400C ; Cmdsuspend | CmdTx | CmdTxFlex
lea eax, [ebx+device.txfd]
mov [txfd_link], eax
mov [txfd_count], 0x02208000
mov eax, txfd_tx_buf_addr0
call GetPgAddr
mov [txfd_tx_desc_addr], eax
mov eax, hdr
call GetPgAddr
mov [txfd_tx_buf_addr0], eax
mov eax, 14 ; sizeof hdr
mov [txfd_tx_buf_size0], eax
; Copy the buffer address and size in
; mov eax, esi
; sub eax, OS_BASE
; mov [txfd_tx_buf_addr1], eax
; mov eax, ecx
; mov [txfd_tx_buf_size1], eax
mov eax, ebx
call GetPgAddr
add eax, device.txfd
mov edx, [ebx+device.io_addr]
add edx, 4 ; SCBPointer
out dx, eax
mov ax, 0x0110 ; INT_MASK | CU_START
mov edx, [ebx+device.io_addr]
add edx, 2 ; SCBCmd
out dx, ax
call wait_for_cmd_done
mov edx, [ebx+device.io_addr]
in ax, dx
I8t_001:
mov ax, [ebx+device.txfd_status]
cmp ax, 0
je I8t_001
mov edx, [ebx+device.io_addr]
in ax, dx
.finish:
ret
;***************************************************************************
; Function
; I8255x_poll
;
; Description
; Polls the ethernet card for a received packet
; Received data, if any, ends up in Ether_buffer
;
;***************************************************************************
I8255x_poll:
mov ax, 0 ; assume no data
mov [eth_rx_data_len], ax
mov ax, [rxfd_status]
cmp ax, 0
je i8p_exit
mov ax, 0
mov [rxfd_status], ax
mov ax, 0xc000
mov [rxfd_command], ax
mov edx, [io_addr]
add edx, 4 ; SCBPointer
mov eax, rxfd_status
sub eax, OS_BASE
out dx, eax
mov edx, [ebx+device.io_addr]
add edx, 2 ; SCBCmd
mov ax, 0x0101 ; INT_MASK | RX_START
out dx, ax
call wait_for_cmd_done
mov esi, rxfd_packet
mov edi, Ether_buffer
mov ecx, 1518
cld
rep movsb
mov ax, [rxfd_count]
and ax, 0x3fff
mov [eth_rx_data_len], ax
i8p_exit:
ret
;***************************************************************************
; Function
; wait_for_cmd_done
;
; Description
; waits for the hardware to complete a command
; port address in edx
;
; al destroyed
;***************************************************************************
wait_for_cmd_done:
; mov edx, [ebx + device.io_addr]
.loop:
in al , dx
test al , al
jnz .loop
ret
;***************************************************************************
; Function
; mdio_read
;
; Description
; This probably reads a register in the "physical media interface chip"
; Phy_id in ebx NOW EAX
; location in ecx
;
; Data returned in eax
;
;***************************************************************************
mdio_read:
mov edx, [ebx + device.io_addr]
add edx, 16 ; SCBCtrlMDI
; mov eax, 0x08000000
; shl ecx, 16
; or eax, ecx
; shl ebx, 21
; or eax, ebx
;
shl ecx, 16 ;
shl eax, 21 ;
or eax, ecx ;
or eax, 0x08000000 ;
out dx , eax ;
;
mrlp:
call delay_us
in eax, dx
mov ecx, eax
and ecx, 0x10000000
jz mrlp
and eax, 0xffff
ret
;***************************************************************************
; Function
; mdio_write
;
; Description
; This probably writes a register in the "physical media interface chip"
; Phy_id in ebx NOW EAX
; location in ecx
; data in edx
; Data returned in eax
;
;***************************************************************************
mdio_write:
; mov eax, 0x04000000
; shl ecx, 16
; or eax, ecx
; shl ebx, 21
; or eax, ebx
; or eax, edx
shl ecx, 16 ;
shl ebx, 21 ;
or eax, ecx ;
or eax, edx ;
or eax, 0x04000000 ;
mov edx, [ebx + device.io_addr]
add edx, 16 ; SCBCtrlMDI
out dx, eax
mwlp:
call delay_us
in eax, dx
mov ecx, eax
and ecx, 0x10000000
jz mwlp
and eax, 0xffff
ret
;***************************************************************************
; Function
; do_eeprom_cmd
;
; Description
; writes a cmd to the ethernet cards eeprom, by bit bashing
; cmd in ebx NOW EAX
; cmd length in ecx
; return in eax
;***************************************************************************
do_eeprom_cmd:
push eax
mov edx, [ebx + device.io_addr]
add dx, 14 ; the value SCBeeprom
mov ax, EE_ENB
out dx, ax
call delay_us
mov ax, 0x4803 ; EE_ENB | EE_SHIFT_CLK
out dx, ax
call delay_us
; dx holds ee_addr
; ecx holds count
; eax holds cmd
xor edi, edi ; this will be the receive data
dec_001:
mov esi, 1
dec ecx
shl esi, cl
inc ecx
and esi, [esp]
mov eax, EE_WRITE_0 ; I am assuming this doesnt affect the flags..
cmp esi, 0
jz dec_002
mov eax, EE_WRITE_1
dec_002:
out dx, ax
call delay_us
or ax, EE_SHIFT_CLK
out dx, ax
call delay_us
shl edi,1
in ax, dx
and ax, EE_DATA_READ
cmp ax,0
jz dec_003
inc edi
dec_003:
loop dec_001
mov ax, EE_ENB
out dx, ax
call delay_us
mov ax, 0x4800
out dx, ax
call delay_us
add esp, 4
mov eax, edi
ret
; End of code
align 4 ; Place all initialised data here
I8255x_DEV dd 0
version dd (5 shl 16) or (API_VERSION and 0xFFFF)
my_service db 'I8255x',0 ; max 16 chars include zero
devicename db 'Intel Etherexpress pro/100',0
include_debug_strings ; All data wich FDO uses will be included here
section '.data' data readable writable align 16 ; place all uninitialized data place here
I8255x_LIST rd I8255x ; This list contains all pointers to device structures the driver is handling
Copy Permalink