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kolibrios/kernel/branches/net/drivers/RTL8139.asm

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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 ;;
;; ;;
;; Realtek 8139 driver for KolibriOS ;;
;; ;;
;; Written by hidnplayr@kolibrios.org ;;
;; ;;
;; v0.1 - march 2009 ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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 & variables
.bytes_tx dq ?
.bytes_rx dq ?
.packets_tx dd ?
.packets_rx dd ?
.mode dd ? ; This dword contains cable status (10mbit/100mbit, full/half duplex, auto negotiation or not,..)
.name dd ?
.mac dp ?
; device specific
.rx_buffer dd ?
.tx_buffer dd ?
.rx_data_offset dd ?
.io_addr dd ?
.curr_tx_desc db ?
.pci_bus db ?
.pci_dev db ?
.irq_line db ?
.hw_ver_id db ?
.size:
}
virtual at 0
device ETH_DEVICE
end virtual
; 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
; RTL8139 specific defines
MAX_RTL8139 equ 16 ; Max number of devices this driver may handle
TX_TIMEOUT equ 30 ; 300 milliseconds timeout
PCI_REG_CMD equ 0x04 ; command register
PCI_BIT_PIO equ 0 ; bit0: io space control
PCI_BIT_MMIO equ 1 ; bit1: memory space control
PCI_BIT_MASTER equ 2 ; bit2: device acts as a PCI master
REG_IDR0 equ 0x00
REG_MAR0 equ 0x08 ; multicast filter register 0
REG_MAR4 equ 0x0c ; multicast filter register 4
REG_TSD0 equ 0x10 ; transmit status of descriptor
REG_TSAD0 equ 0x20 ; transmit start address of descriptor
REG_RBSTART equ 0x30 ; RxBuffer start address
REG_COMMAND equ 0x37 ; command register
REG_CAPR equ 0x38 ; current address of packet read (word) R/W
REG_IMR equ 0x3c ; interrupt mask register
REG_ISR equ 0x3e ; interrupt status register
REG_TXCONFIG equ 0x40 ; transmit configuration register
REG_RXCONFIG equ 0x44 ; receive configuration register 0
REG_MPC equ 0x4c ; missed packet counter
REG_9346CR equ 0x50 ; serial eeprom 93C46 command register
REG_CONFIG1 equ 0x52 ; configuration register 1
REG_MSR equ 0x58
REG_CONFIG4 equ 0x5a ; configuration register 4
REG_HLTCLK equ 0x5b ; undocumented halt clock register
REG_BMCR equ 0x62 ; basic mode control register
REG_ANAR equ 0x66 ; auto negotiation advertisement register
REG_9346CR_WE equ 11b SHL 6
BIT_RUNT equ 4 ; total packet length < 64 bytes
BIT_LONG equ 3 ; total packet length > 4k
BIT_CRC equ 2 ; crc error occured
BIT_FAE equ 1 ; frame alignment error occured
BIT_ROK equ 0 ; received packet is ok
BIT_RST equ 4 ; reset bit
BIT_RE equ 3 ; receiver enabled
BIT_TE equ 2 ; transmitter enabled
BUFE equ 1 ; rx buffer is empty, no packet stored
BIT_ISR_TOK equ 2 ; transmit ok
BIT_ISR_RER equ 1 ; receive error interrupt
BIT_ISR_ROK equ 0 ; receive ok
BIT_TX_MXDMA equ 8 ; Max DMA burst size per Tx DMA burst
BIT_TXRR equ 4 ; Tx Retry count 16+(TXRR*16)
BIT_RXFTH equ 13 ; Rx fifo threshold
BIT_RBLEN equ 11 ; Ring buffer length indicator
BIT_RX_MXDMA equ 8 ; Max DMA burst size per Rx DMA burst
BIT_NOWRAP equ 7 ; transfered data wrapping
BIT_9356SEL equ 6 ; eeprom selector 9346/9356
BIT_AER equ 5 ; accept error packets
BIT_AR equ 4 ; accept runt packets
BIT_AB equ 3 ; accept broadcast packets
BIT_AM equ 2 ; accept multicast packets
BIT_APM equ 1 ; accept physical match packets
BIT_AAP equ 0 ; accept all packets
BIT_93C46_EEM1 equ 7 ; RTL8139 eeprom operating mode1
BIT_93C46_EEM0 equ 6 ; RTL8139 eeprom operating mode0
BIT_93C46_EECS equ 3 ; chip select
BIT_93C46_EESK equ 2 ; serial data clock
BIT_93C46_EEDI equ 1 ; serial data input
BIT_93C46_EEDO equ 0 ; serial data output
BIT_LWACT equ 4 ; see REG_CONFIG1
BIT_SLEEP equ 1 ; sleep bit at older chips
BIT_PWRDWN equ 0 ; power down bit at older chips
BIT_PMEn equ 0 ; power management enabled
BIT_LWPTN equ 2 ; see REG_CONFIG4
BIT_ERTXTH equ 16 ; early TX threshold
BIT_TOK equ 15 ; transmit ok
BIT_OWN equ 13 ; tx DMA operation is completed
BIT_ANE equ 12 ; auto negotiation enable
BIT_TXFD equ 8 ; 100base-T full duplex
BIT_TX equ 7 ; 100base-T
BIT_10FD equ 6 ; 10base-T full duplex
BIT_10 equ 5 ; 10base-T
BIT_SELECTOR equ 0 ; binary encoded selector CSMA/CD=00001
BIT_IFG1 equ 25
BIT_IFG0 equ 24
RBLEN equ 2 ; Receive buffer size: 0==8K 1==16k 2==32k 3==64k
TXRR equ 8 ; total retries = 16+(TXRR*16)
TX_MXDMA equ 6 ; 0=16 1=32 2=64 3=128 4=256 5=512 6=1024 7=2048
ERTXTH equ 8 ; in unit of 32 bytes e.g:(8*32)=256
RX_MXDMA equ 7 ; 0=16 1=32 2=64 3=128 4=256 5=512 6=1024 7=unlimited
RXFTH equ 7 ; 0=16 1=32 2=64 3=128 4=256 5=512 6=1024 7=no threshold
RX_CONFIG equ (RBLEN shl BIT_RBLEN) or \
(RX_MXDMA shl BIT_RX_MXDMA) or \
(1 shl BIT_NOWRAP) or \
(RXFTH shl BIT_RXFTH) or\
(1 shl BIT_AB) or \
(1 shl BIT_APM) or \
(1 shl BIT_AER) or \
(1 shl BIT_AR) or \
(1 shl BIT_AM)
RX_BUFFER_SIZE equ (8192 shl RBLEN)
MAX_ETH_FRAME_SIZE equ 1516 ; exactly 1514 wthout CRC
NUM_TX_DESC equ 4
TX_BUF_SIZE equ 4096 ; size of one tx buffer (set to 4kb because of KolibriOS's page size)
EE_93C46_REG_ETH_ID equ 7 ; MAC offset
EE_93C46_READ_CMD equ (6 shl 6) ; 110b + 6bit address
EE_93C56_READ_CMD equ (6 shl 8) ; 110b + 8bit address
EE_93C46_CMD_LENGTH equ 9 ; start bit + cmd + 6bit address
EE_93C56_CMD_LENGTH equ 11 ; start bit + cmd + 8bit ddress
VER_RTL8139 equ 1100000b
VER_RTL8139A equ 1110000b
VER_RTL8139AG equ 1110100b
VER_RTL8139B equ 1111000b
VER_RTL8130 equ VER_RTL8139B
VER_RTL8139C equ 1110100b
VER_RTL8100 equ 1111010b
VER_RTL8100B equ 1110101b
VER_RTL8139D equ VER_RTL8100B
VER_RTL8139CP equ 1110110b
VER_RTL8101 equ 1110111b
IDX_RTL8139 equ 0
IDX_RTL8139A equ 1
IDX_RTL8139B equ 2
IDX_RTL8139C equ 3
IDX_RTL8100 equ 4
IDX_RTL8139D equ 5
IDX_RTL8139D equ 6
IDX_RTL8101 equ 7
ISR_SERR equ 1 SHL 15
ISR_TIMEOUT equ 1 SHL 14
ISR_LENCHG equ 1 SHL 13
ISR_FIFOOVW equ 1 SHL 6
ISR_PUN equ 1 SHL 5
ISR_RXOVW equ 1 SHL 4
ISR_TER equ 1 SHL 3
ISR_TOK equ 1 SHL 2
ISR_RER equ 1 SHL 1
ISR_ROK equ 1 SHL 0
INTERRUPT_MASK equ ISR_ROK or \
ISR_RXOVW or \
ISR_PUN or \
ISR_FIFOOVW or \
ISR_LENCHG or \
ISR_TOK or \
ISR_TER
TSR_OWN equ 1 SHL 13
TSR_TUN equ 1 SHL 14
TSR_TOK equ 1 SHL 15
TSR_CDH equ 1 SHL 28
TSR_OWC equ 1 SHL 29
TSR_TABT equ 1 SHL 30
TSR_CRS equ 1 SHL 31
section '.flat' code readable align 16
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; proc START ;;
;; ;;
;; (standard driver proc) ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
proc START stdcall, state:dword
cmp [state], 1
jne .exit
.entry:
DEBUGF 1,"Loading rtl8139 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
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, RTL8139_LIST
mov ecx, [RTL8139_DEV]
test ecx, ecx
jz .firstdevice
; mov eax, [edx+IOCTL.input] ; get the pci bus and device numbers
mov bx , [eax+1] ;
.nextdevice:
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 [RTL8139_DEV], MAX_RTL8139 ; First check if the driver can handle one more card
jge .fail
push edx
stdcall KernelAlloc, dword 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_BUF_SIZE*NUM_TX_DESC)
test eax, eax
jz .err
mov [ebx+device.tx_buffer], eax
; This one needs to be cleared too..
mov edi, eax
mov ecx, (TX_BUF_SIZE*NUM_TX_DESC)/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, [RTL8139_DEV] ; Add the device structure to our device list
mov [RTL8139_LIST+4*eax], ebx ; (IRQ handler uses this list to find device)
inc [RTL8139_DEV] ;
call EthRegDev
cmp eax, -1
je .destroy
ret
; 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)
.destroy:
; todo: reset device into virgin state
.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 ;;
;; ;;
;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
align 4
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
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; probe: enables the device (if it really is RTL8139)
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
probe:
DEBUGF 2,"Probing rtl8139 device: "
; enable the device
movzx eax, byte [ebx+device.pci_bus]
movzx ecx, byte [ebx+device.pci_dev]
stdcall PciRead32, eax ,ecx ,PCI_REG_CMD
mov cx , ax
or cl , (1 shl PCI_BIT_MASTER) or (1 shl PCI_BIT_PIO)
and cl , not (1 shl PCI_BIT_MMIO)
movzx eax, byte [ebx+device.pci_bus]
movzx edx, byte [ebx+device.pci_dev]
stdcall PciWrite32, eax ,edx ,PCI_REG_CMD, ecx
; get chip version
mov edx, [ebx+device.io_addr]
add edx, REG_TXCONFIG + 2
in ax , dx
shr ah , 2
shr ax , 6
and al , 01111111b
mov ecx, HW_VER_ARRAY_SIZE-1
.chip_ver_loop:
cmp al , [hw_ver_array+ecx]
je .chip_ver_found
dec ecx
jns .chip_ver_loop
xor cl , cl ; default RTL8139
.chip_ver_found:
mov [ebx+device.hw_ver_id], cl
; wake up the chip
mov edx, [ebx+device.io_addr]
add edx, REG_HLTCLK
mov al , 'R' ; run the clock
out dx , al
; unlock config and BMCR registers
add edx, REG_9346CR - REG_HLTCLK
mov al , (1 shl BIT_93C46_EEM1) or (1 shl BIT_93C46_EEM0)
out dx , al
; enable power management
add edx, REG_CONFIG1 - REG_9346CR
in al , dx
cmp byte [ebx+device.hw_ver_id], IDX_RTL8139B
jl .old_chip
; set LWAKE pin to active high (default value).
; it is for Wake-On-LAN functionality of some motherboards.
; this signal is used to inform the motherboard to execute a wake-up process.
; only at newer chips.
or al , (1 shl BIT_PMEn)
and al , not (1 shl BIT_LWACT)
out dx , al
add edx, REG_CONFIG4 - REG_CONFIG1
in al , dx
and al , not (1 shl BIT_LWPTN)
out dx , al
jmp .finish_wake_up
.old_chip:
; wake up older chips
and al , not ((1 shl BIT_SLEEP) or (1 shl BIT_PWRDWN))
out dx , al
.finish_wake_up:
; lock config and BMCR registers
xor al , al
mov edx, [ebx+device.io_addr]
add edx, REG_9346CR
out dx , al
DEBUGF 2,"done!\n"
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; reset: Set up all registers and descriptors, clear some values
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
reset:
DEBUGF 2,"Resetting rtl8139: "
; attach int handler
movzx eax, [ebx+device.irq_line]
DEBUGF 1,"Attaching int handler to irq %x, ",eax:1
stdcall AttachIntHandler, eax, int_handler, dword 0
test eax, eax
jnz @f
DEBUGF 1,"\nCould not attach int handler!\n"
; or eax, -1
; ret
@@:
; reset chip
DEBUGF 1,"Resetting chip\n"
mov edx, [ebx+device.io_addr]
add edx, REG_COMMAND
mov al , 1 shl BIT_RST
out dx , al
mov cx , 1000 ; wait no longer for the reset
.wait_for_reset:
in al , dx
test al , 1 shl BIT_RST
jz .reset_completed ; RST remains 1 during reset
dec cx
jns .wait_for_reset
.reset_completed:
; unlock config and BMCR registers
mov edx, [ebx+device.io_addr]
add edx, REG_9346CR
mov al , (1 shl BIT_93C46_EEM1) or (1 shl BIT_93C46_EEM0)
out dx , al
; initialize multicast registers (no filtering)
mov eax, 0xffffffff
add edx, REG_MAR0 - REG_9346CR
out dx , eax
add edx, REG_MAR4 - REG_MAR0
out dx , eax
; enable Rx/Tx
mov al , (1 shl BIT_RE) or (1 shl BIT_TE)
add edx, REG_COMMAND - REG_MAR4
out dx , al
; 32k Rxbuffer, unlimited dma burst, no wrapping, no rx threshold
; accept broadcast packets, accept physical match packets
mov ax , RX_CONFIG
add edx, REG_RXCONFIG - REG_COMMAND
out dx , ax
; 1024 bytes DMA burst, total retries = 16 + 8 * 16 = 144
mov eax , (TX_MXDMA shl BIT_TX_MXDMA) or (TXRR shl BIT_TXRR) or BIT_IFG1 or BIT_IFG0
add edx, REG_TXCONFIG - REG_RXCONFIG
out dx , eax
; enable auto negotiation
add edx, REG_BMCR - REG_TXCONFIG
in ax , dx
or ax , (1 shl BIT_ANE)
out dx , ax
; set auto negotiation advertisement
add edx, REG_ANAR - REG_BMCR
in ax , dx
or ax , (1 shl BIT_SELECTOR) or (1 shl BIT_10) or (1 shl BIT_10FD) or (1 shl BIT_TX) or (1 shl BIT_TXFD)
out dx , ax
; lock config and BMCR registers
xor eax, eax
add edx, REG_9346CR - REG_ANAR
out dx , al
; init RX/TX pointers
mov [ebx+device.rx_data_offset], eax
mov [ebx+device.curr_tx_desc], al
; clear missing packet counter
add edx, REG_MPC - REG_9346CR
out dx , eax
; Set up the 4 Txbuffer descriptors
add edx, REG_TSAD0 - REG_MPC
mov eax, [ebx+device.tx_buffer]
mov ecx, 4
.loop:
push eax
call GetPgAddr
DEBUGF 2,"Desc: %x ", eax
out dx , eax
add dx , 4
pop eax
add eax, TX_BUF_SIZE
loop .loop
; set RxBuffer address, init RX buffer offset, init TX ring
mov eax, [ebx+device.rx_buffer]
call GetPgAddr
mov edx, [ebx+device.io_addr]
add edx, REG_RBSTART
out dx , eax
; enable interrupts
mov eax, INTERRUPT_MASK
add edx, REG_IMR - REG_RBSTART
out dx , ax
; Read MAC address
call read_mac
; Indicate that we have successfully reset the card
DEBUGF 2,"Done!\n"
xor eax, eax
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; 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
; check descriptor
; DEBUGF 1,"Checking descriptor, "
movzx ecx, [ebx+device.curr_tx_desc]
mov edx, [ebx+device.io_addr]
lea edx, [edx+ecx*4+REG_TSD0]
in ax, dx
test ax, 0x1fff ; or no size given
jz .send_packet
and ax, (1 shl BIT_TOK) or (1 shl BIT_OWN)
cmp ax, (1 shl BIT_TOK) or (1 shl BIT_OWN)
jz .send_packet
; wait for timeout
; DEBUGF 1,"Waiting for timeout, "
push edx ebx ; TODO : rtl8139 internal timer should be used instead
stdcall Sleep, TX_TIMEOUT ; ? What registers does this destroy ?
pop ebx edx
in ax, dx
and ax, (1 shl BIT_TOK) or (1 shl BIT_OWN)
cmp ax, (1 shl BIT_TOK) or (1 shl BIT_OWN)
jz .send_packet ; if chip hung, reset it
push dx
call reset ; reset the card
pop dx
.send_packet:
; DEBUGF 1,"Sending packet, "
push edx
movzx eax, [ebx+device.curr_tx_desc] ; calculate the current tx_buffer address
mov edx, TX_BUF_SIZE ;MAX_ETH_FRAME_SIZE ;
mul edx ;
mov edi, [ebx+device.tx_buffer] ;
add edi, eax ; Store it in edi
pop edx
mov esi, [esp] ; Copy data to that address
mov ecx, [esp+4] ;
shr ecx, 2 ;
rep movsd ;
mov ecx, [esp+4] ;
and ecx, 3 ;
rep movsb ;
inc [ebx+device.packets_tx] ;
mov eax, [esp+4] ; Get packet size in eax
add dword [ebx + device.bytes_tx], eax
adc dword [ebx + device.bytes_tx + 4], 0
; or eax, (ERTXTH shl BIT_ERTXTH) ; Set descriptor size and the early tx treshold into the correct Transmission status register (TSD0, TSD1, TSD2 or TSD3)
out dx , eax ;
; get next descriptor 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, ...
inc [ebx+device.curr_tx_desc]
and [ebx+device.curr_tx_desc], 3
DEBUGF 2," - Packet Sent! "
.finish:
DEBUGF 2," - Done!\n"
call KernelFree
add esp, 4 ; pop (balance stack)
ret
;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Interrupt handler ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;
align 4
int_handler:
DEBUGF 1,"IRQ %x ",eax:2 ; no, you cant replace 'eax:2' with 'al', this must be a bug in FDO
; find pointer of device wich made IRQ occur
mov esi, RTL8139_LIST
mov ecx, [RTL8139_DEV]
.nextdevice:
mov ebx, dword [esi]
mov edx, dword [ebx+device.io_addr] ; get IRQ reason
add edx, REG_ISR
in ax , dx
out dx , ax ; send it back to ACK
add esi, 4
test ax , ax
jnz .got_it
loop .nextdevice
ret ; If no device was found, abort (The irq was probably for a device, not registered to this driver)
.got_it:
; looks like we've found it!
; Lets found out why the irq occured then..
;----------------------------------------------------
; Received packet ok?
test ax, ISR_ROK
jz @f
push ax
.receive:
mov edx, dword [ebx+device.io_addr] ; get IRQ reason
add edx, REG_COMMAND ;
in al , dx ;
test al , BUFE ; test if RX buffer is empty
jnz .finish ;
DEBUGF 2,"RX: "
mov eax, dword [ebx+device.rx_buffer]
add eax, dword [ebx+device.rx_data_offset]
test byte [eax], (1 shl BIT_ROK) ; check if packet is ok
jz .reset_rx
; packet is ok, copy it
movzx ecx, word [eax+2] ; packet length
add dword [ebx + device.bytes_rx], ecx ; Update stats
adc dword [ebx + device.bytes_rx + 4], 0
inc dword [ebx + device.packets_rx] ;
sub ecx, 4 ; don't copy CRC
DEBUGF 1,"Received %u bytes\n", ecx
push ebx eax ecx
stdcall KernelAlloc, ecx ; Allocate a buffer to put packet into
pop ecx
test eax, eax ; Test if we allocated succesfully
jz .abort ;
mov edi, eax ; Set up registers to copy the packet
mov esi, [esp] ;
add esi, 4 ; Dont copy CRC
push dword .abort ; Kernel will return to this address after EthReceiver
push ecx edi ; Save buffer pointer and size, to pass to kernel
shr ecx, 2
cld
rep movsd ; copy the dwords
mov ecx, [esp+4]
and ecx, 3
rep movsb ; copy the rest bytes
jmp EthReceiver ; Send it to kernel
.abort:
pop eax ebx
; update eth_data_start_offset
movzx eax, word [eax+2] ; packet length
add eax, [ebx+device.rx_data_offset]
add eax, 4+3 ; packet header is 4 bytes long + dword alignment
and eax, not 3 ; dword alignment
cmp eax, RX_BUFFER_SIZE
jl .no_wrap
sub eax, RX_BUFFER_SIZE
.no_wrap:
mov [ebx+device.rx_data_offset], eax
DEBUGF 1,"New RX ptr: %u", eax
mov edx, dword [ebx+device.io_addr]
add edx, REG_CAPR ; update 'Current Address of Packet Read register'
sub eax, 0x10 ; value 0x10 is a constant for CAPR
out dx , ax
jmp .receive ; check for multiple packets
.reset_rx:
test byte [eax], (1 shl BIT_CRC)
jz .no_crc_error
DEBUGF 2,"\nCRC error!\n"
.no_crc_error:
test byte [eax], (1 shl BIT_FAE)
jz .no_fae_error
DEBUGF 1,"\nFrame alignment error!\n"
.no_fae_error:
DEBUGF 1,"Reset RX\n"
in al , dx ; read command register
push ax
and al , not (1 shl BIT_RE) ; Clear the RE bit
out dx , al
pop ax
out dx , al ; write original command back
add edx, REG_RXCONFIG - REG_COMMAND ; Restore RX configuration
mov ax , RX_CONFIG
out dx , ax
.finish:
pop ax
;----------------------------------------------------
; Transmit error ?
@@:
test ax, ISR_TER
jz @f
push ax
cmp [ebx+device.curr_tx_desc], 4
jz .notxd
mov edx, [ebx+device.io_addr]
movzx ecx, [ebx+device.curr_tx_desc]
lea edx, [edx+ecx*4+REG_TSD0]
in eax, dx
.notxd:
test eax, TSR_TUN
jz .nobun
DEBUGF 1, "TX: FIFO Buffer underrun!\n"
.nobun:
test eax, TSR_OWC
jz .noowc
DEBUGF 1, "TX: OWC!\n"
.noowc:
test eax, TSR_TABT
jz .notabt
DEBUGF 1, "TX: TABT!\n"
.notabt:
test eax, TSR_CRS
jz .nocsl
DEBUGF 1, "TX: Carrier Sense Lost!\n"
.nocsl:
; test eax, TSR_OWN or TSR_TOK
; jz .nofd
; DEBUGF 1, "TX: Transmit OK (desc: %u)\n", ecx
;
; .nofd:
pop ax
;----------------------------------------------------
; Transmit ok ?
@@:
test ax, ISR_TOK
jz @f
DEBUGF 1, "TX: Transmit OK (desc: %u)\n", [ebx+device.curr_tx_desc]:1
;----------------------------------------------------
; Rx buffer overflow ?
@@:
test ax, ISR_RXOVW
jz @f
push ax
DEBUGF 1,"RX-buffer overflow!\n"
mov edx, [ebx+device.io_addr]
add edx, REG_ISR
mov ax , ISR_FIFOOVW or ISR_RXOVW
out dx , ax
pop ax
;----------------------------------------------------
; Packet underrun? ?
@@:
test ax, ISR_PUN
jz @f
DEBUGF 1,"Packet underrun!\n"
;----------------------------------------------------
; Receive FIFO overflow ?
@@:
test ax, ISR_FIFOOVW
jz @f
push ax
DEBUGF 2,"RX fifo overflox!\n"
mov edx, [ebx+device.io_addr]
add edx, REG_ISR
mov ax , ISR_FIFOOVW or ISR_RXOVW
out dx , ax
pop ax
;----------------------------------------------------
; Something about Cable changed ?
@@:
test ax, ISR_LENCHG
jz .fail
DEBUGF 2,"Cable changed!\n"
call cable
; If none of the above events happened, just exit clearing int
.fail:
DEBUGF 2,"\n"
ret
;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Update Cable status ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
cable:
DEBUGF 1,"Checking Cable status: "
mov edx, dword [ebx+device.io_addr]
add edx, REG_MSR
in al , dx
; test al , 1 SHL 2 ; 0 = link ok 1 = link fail
; jnz .notconnected
; test al , 1 SHL 3 ; 0 = 100 Mbps 1 = 10 Mbps
; jnz .10mbps
shr al, 2
and al, 3
mov byte [ebx+device.mode+3], al
DEBUGF 1,"Done!\n"
ret
;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Write MAC address ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;
align 4
write_mac: ; in: mac pushed onto stack (as 3 words)
DEBUGF 1,"Writing MAC: "
; disable all in command registers
mov edx, [ebx+device.io_addr]
add edx, REG_9346CR
xor eax, eax
out dx , al
add edx, REG_IMR - REG_9346CR
xor eax, eax
out dx , ax
add edx, REG_ISR - REG_IMR
mov eax, -1
out dx , ax
; enable writing
add edx, REG_9346CR - REG_ISR
mov eax, REG_9346CR_WE
out dx , al
; write the mac ...
add edx, REG_IDR0 - REG_9346CR
pop eax
out dx , eax
add edx, 4
xor eax, eax
pop ax
out dx , eax
; disable writing
add edx, REG_9346CR -REG_IDR0
xor eax, eax
out dx , al
DEBUGF 1,"ok!\n"
; Notice this procedure does not ret, but continues to read_mac instead.
;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Read MAC address ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;
read_mac:
DEBUGF 1,"Reading MAC: "
mov edx, [ebx + device.io_addr]
mov ecx, 2
@@:
lea eax, [EE_93C46_REG_ETH_ID+ecx]
push ecx
call read_eeprom
pop ecx
push ax
dec cl
jns @r
DEBUGF 1,"%x-%x-%x-%x-%x-%x\n",[esp+0]:2,[esp+1]:2,[esp+2]:2,[esp+3]:2,[esp+4]:2,[esp+5]:2
lea edi, [ebx + device.mac]
pop eax
stosd
pop ax
stosw
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Read eeprom (type 93c46 and 93c56) ;;
;; ;;
;; In: word to be read in al (6bit in case of 93c46 and 8bit otherwise) ;;
;; pointer to device structure in ebx ;;
;; ;;
;; OUT: word read in ax ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
read_eeprom:
DEBUGF 2,"Reading eeprom, "
mov edx, [ebx+device.io_addr]
push ebx
movzx ebx, al
add edx, REG_RXCONFIG
in al, dx
test al, (1 shl BIT_9356SEL)
jz .type_93c46
; and bl, 01111111b ; don't care first bit
or bx, EE_93C56_READ_CMD ; it contains start bit
mov cx, EE_93C56_CMD_LENGTH-1 ; cmd_loop counter
jmp .read_eeprom
.type_93c46:
and bl, 00111111b
or bx, EE_93C46_READ_CMD ; it contains start bit
mov cx, EE_93C46_CMD_LENGTH-1 ; cmd_loop counter
.read_eeprom:
add edx, REG_9346CR - REG_RXCONFIG
; mov al, (1 shl BIT_93C46_EEM1)
; out dx, al
mov al, (1 shl BIT_93C46_EEM1) or (1 shl BIT_93C46_EECS) ; wake up the eeprom
out dx, al
.cmd_loop:
mov al, (1 shl BIT_93C46_EEM1) or (1 shl BIT_93C46_EECS)
bt bx, cx
jnc .zero_bit
or al, (1 shl BIT_93C46_EEDI)
.zero_bit:
out dx, al
; push eax
; in eax, dx ; eeprom delay
; pop eax
or al, (1 shl BIT_93C46_EESK)
out dx, al
; in eax, dx ; eeprom delay
dec cx
jns .cmd_loop
; in eax, dx ; eeprom delay
mov al, (1 shl BIT_93C46_EEM1) or (1 shl BIT_93C46_EECS)
out dx, al
mov cl, 0xf
.read_loop:
shl ebx, 1
mov al, (1 shl BIT_93C46_EEM1) or (1 shl BIT_93C46_EECS) or (1 shl BIT_93C46_EESK)
out dx, al
; in eax, dx ; eeprom delay
in al, dx
and al, (1 shl BIT_93C46_EEDO)
jz .dont_set
inc ebx
.dont_set:
mov al, (1 shl BIT_93C46_EEM1) or (1 shl BIT_93C46_EECS)
out dx, al
; in eax, dx ; eeprom delay
dec cl
jns .read_loop
xor al, al
out dx, al
mov ax, bx
pop ebx
ret
; End of code
align 4 ; Place all initialised data here
RTL8139_DEV dd 0
version dd (5 shl 16) or (API_VERSION and 0xFFFF)
my_service db 'RTL8139',0 ; max 16 chars include zero
devicename db 'Realtek 8139',0
hw_ver_array db VER_RTL8139 ; This array is used by the probe routine to find out wich version of the RTL8139 we are working with
db VER_RTL8139A
db VER_RTL8139B
db VER_RTL8139C
db VER_RTL8100
db VER_RTL8139D
db VER_RTL8139CP
db VER_RTL8101
HW_VER_ARRAY_SIZE = $-hw_ver_array
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
RTL8139_LIST rd MAX_RTL8139 ; This list contains all pointers to device structures the driver is handling
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