;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Copyright (C) KolibriOS team 2004-2010. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; ;; ;; ;; Realtek 8139 driver for KolibriOS ;; ;; ;; ;; based on RTL8139.asm driver for menuetos ;; ;; and realtek8139.asm for SolarOS by Eugen Brasoveanu ;; ;; ;; ;; Written by hidnplayr@kolibrios.org ;; ;; ;; ;; GNU GENERAL PUBLIC LICENSE ;; ;; Version 2, June 1991 ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; format MS COFF API_VERSION equ 0x01000100 DRIVER_VERSION equ 5 MAX_DEVICES equ 16 RBLEN equ 3 ; Receive buffer size: 0==8K 1==16k 2==32k 3==64k DEBUG equ 1 __DEBUG__ equ 1 __DEBUG_LEVEL__ equ 2 include 'proc32.inc' include 'imports.inc' include 'fdo.inc' include 'netdrv.inc' public START public service_proc public version 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 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 \ ; Accept broadcast packets (1 shl BIT_APM) or \ ; Accept physical match packets (1 shl BIT_AER) or \ ; Accept error packets (1 shl BIT_AR) or \ ; Accept Runt packets (smaller then 64 bytes) (1 shl BIT_AM) ; Accept multicast packets RX_BUFFER_SIZE equ (8192 shl RBLEN);+16 MAX_ETH_FRAME_SIZE equ 1516 ; exactly 1514 wthout CRC NUM_TX_DESC equ 4 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 virtual at ebx device: ETH_DEVICE .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 ? .TX_DESC rd NUM_TX_DESC .size = $ - device end virtual 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 2,"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, [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 ;------------------------------------------------------ @@: cmp eax, 1 ;SRV_HOOK jne .fail cmp [IOCTL.inp_size], 3 ; Data input must be at least 3 bytes jl .fail mov eax, [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, device_list mov ecx, [devices] test ecx, ecx jz .firstdevice ; 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 ; This device doesnt have its own eth_device structure yet, lets create one .firstdevice: cmp [devices], MAX_DEVICES ; First check if the driver can handle one more card jge .fail allocate_and_clear ebx, device.size, .fail ; Allocate the buffer for device structure ; Fill in the direct call addresses into the struct 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 ; save the pci bus and device numbers 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] 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 ; Allocate the receive buffer stdcall CreateRingBuffer, dword (RX_BUFFER_SIZE), dword PG_SW test eax, eax jz .err mov [device.rx_buffer], eax ; 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, [devices] ; Add the device structure to our device list mov [device_list+4*eax], ebx ; (IRQ handler uses this list to find device) inc [devices] ; mov [device.type], NET_TYPE_ETH call NetRegDev cmp eax, -1 je .destroy ret ; If the device was already loaded, find the device number and return it in eax .find_devicenum: DEBUGF 2,"Trying to find device number of already registered device\n" 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 2,"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 [device.rx_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: " make_bus_master [device.pci_bus], [device.pci_dev] ; get chip version set_io 0 set_io 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 .unknown: mov ecx, 8 .chip_ver_found: cmp ecx, 8 jg .unknown mov [device.hw_ver_id], cl mov ecx, [crosslist + ecx*4] mov [device.name], ecx DEBUGF 2,"Chip version: %s\n", ecx ; wake up the chip set_io 0 set_io REG_HLTCLK mov al , 'R' ; run the clock out dx , al ; unlock config and BMCR registers set_io REG_9346CR mov al , (1 shl BIT_93C46_EEM1) or (1 shl BIT_93C46_EEM0) out dx , al ; enable power management set_io REG_CONFIG1 in al , dx cmp [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 set_io REG_CONFIG4 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 set_io 0 set_io 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, [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" set_io 0 set_io 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 set_io 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 set_io REG_MAR0 out dx , eax set_io REG_MAR4 out dx , eax ; enable Rx/Tx mov al , (1 shl BIT_RE) or (1 shl BIT_TE) set_io REG_COMMAND out dx , al ; Rxbuffer size, unlimited dma burst, no wrapping, no rx threshold ; accept broadcast packets, accept physical match packets mov ax , RX_CONFIG set_io REG_RXCONFIG 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 set_io REG_TXCONFIG out dx , eax ; enable auto negotiation set_io REG_BMCR in ax , dx or ax , (1 shl BIT_ANE) out dx , ax ; set auto negotiation advertisement set_io REG_ANAR 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 set_io REG_9346CR out dx , al ; init RX/TX pointers mov [device.rx_data_offset], eax mov [device.curr_tx_desc], al ; set_io REG_CAPR ; out dx , ax ; clear packet/byte counters lea edi, [device.bytes_tx] mov ecx, 6 rep stosd ; clear missing packet counter set_io REG_MPC out dx , eax ; set RxBuffer address, init RX buffer offset mov eax, [device.rx_buffer] mov dword[eax], 0 DEBUGF 2,"RX buffer:%x\n", eax GetRealAddr DEBUGF 2,"RX buffer:%X\n", eax set_io REG_RBSTART out dx , eax ; Read MAC address call read_mac ; enable interrupts set_io 0 set_io REG_IMR mov eax, INTERRUPT_MASK out dx , ax ; 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" xor eax, eax ret ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Transmit ;; ;; ;; ;; In: buffer pointer in [esp+4] ;; ;; size of buffer in [esp+8] ;; ;; pointer to device structure in ebx ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; align 4 transmit: DEBUGF 1,"\nTransmitting packet, buffer:%x, size:%u\n",[esp+4],[esp+8] mov eax, [esp+4] 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+8], MAX_ETH_FRAME_SIZE jg .fail cmp dword [esp+8], 60 jl .fail ; check if we own the current discriptor set_io 0 set_io REG_TSD0 movzx ecx, [device.curr_tx_desc] shl ecx, 2 add edx, ecx in eax, dx test eax, (1 shl BIT_OWN) jz .wait_to_send .send_packet: ; get next descriptor inc [device.curr_tx_desc] and [device.curr_tx_desc], NUM_TX_DESC-1 ; Update stats inc [device.packets_tx] mov eax, [esp+8] add dword [device.bytes_tx], eax adc dword [device.bytes_tx + 4], 0 ; Set the buffer address set_io REG_TSAD0 mov eax, [esp+4] mov [device.TX_DESC+ecx], eax GetRealAddr out dx, eax ; And the size of the buffer set_io REG_TSD0 mov eax, [esp+8] or eax, (ERTXTH shl BIT_ERTXTH) ; Early threshold out dx, eax DEBUGF 1,"Packet Sent!\n" xor eax, eax ret 8 .wait_to_send: DEBUGF 1,"Waiting for timeout\n" push edx mov esi, 300 stdcall Sleep pop edx in ax, dx test ax, (1 shl BIT_OWN) jnz .send_packet pusha call reset ; if chip hung, reset it popa jmp .send_packet .fail: DEBUGF 1,"failed!\n" stdcall KernelFree, [esp+4] or eax, -1 ret 8 ;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Interrupt handler ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;; align 4 int_handler: DEBUGF 1,"\nIRQ %x\n", 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, device_list mov ecx, [devices] test ecx, ecx jz .fail .nextdevice: mov ebx, dword [esi] set_io 0 set_io REG_ISR in ax , dx out dx , ax ; send it back to ACK add esi, 4 test ax , ax jnz .got_it dec ecx jnz .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: set_io 0 set_io REG_COMMAND in al , dx test al , BUFE ; test if RX buffer is empty jnz .finish ; DEBUGF 1,"RX: " mov eax, [device.rx_buffer] add eax, [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 sub ecx, 4 ; don't copy CRC ; Update stats add dword [device.bytes_rx], ecx adc dword [device.bytes_rx + 4], 0 inc dword [device.packets_rx] 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 ; Where we will copy too mov esi, [esp] ; The buffer we will copy from 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 .copy: shr ecx, 1 jnc .nb movsb .nb: shr ecx, 1 jnc .nw movsw .nw: jz .nd rep movsd .nd: jmp EthReceiver ; Send it to kernel .abort: pop eax ebx ; update eth_data_start_offset movzx eax, word [eax+2] ; packet length add eax, [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 DEBUGF 2,"Wrapping" sub eax, RX_BUFFER_SIZE .no_wrap: mov [device.rx_data_offset], eax DEBUGF 1,"New RX ptr: %d\n", eax set_io 0 set_io 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 ok / Transmit error @@: test ax, ISR_TOK + ISR_TER jz @f push ax xor ecx, ecx .txdesloop: set_io 0 set_io REG_TSD0 add edx, ecx in eax, dx test eax, TSR_OWN ; DMA operation completed jz .notthisone cmp [device.TX_DESC+ecx], 0 je .notthisone ; .notxd: ; test eax, TSR_TUN ; jz .nobun ; DEBUGF 2, "TX: FIFO Buffer underrun!\n" ; ; .nobun: ; test eax, TSR_OWC ; jz .noowc ; DEBUGF 2, "TX: OWC!\n" ; ; .noowc: ; test eax, TSR_TABT ; jz .notabt ; DEBUGF 2, "TX: TABT!\n" ; ; .notabt: ; test eax, TSR_CRS ; jz .nocsl ; DEBUGF 2, "TX: Carrier Sense Lost!\n" ; ; .nocsl: DEBUGF 1,"TX OK: free buffer %x\n", [device.TX_DESC+ecx]:8 push ecx ebx stdcall KernelFree, [device.TX_DESC+ecx] pop ebx ecx mov [device.TX_DESC+ecx], 0 .notthisone: add ecx, 4 cmp ecx, 16 jl .txdesloop pop ax ;---------------------------------------------------- ; Rx buffer overflow ? @@: test ax, ISR_RXOVW jz @f push ax DEBUGF 2,"RX-buffer overflow!\n" set_io 0 set_io REG_ISR mov ax , ISR_FIFOOVW or ISR_RXOVW out dx , ax pop ax ;---------------------------------------------------- ; Packet underrun? @@: test ax, ISR_PUN jz @f DEBUGF 2,"Packet underrun!\n" ;---------------------------------------------------- ; Receive FIFO overflow ? @@: test ax, ISR_FIFOOVW jz @f push ax DEBUGF 2,"RX fifo overflow!\n" set_io 0 set_io 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 .fail: ret ;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Update Cable status ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;; align 4 cable: DEBUGF 1,"Checking Cable status: " mov edx, dword [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 [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 2,"Writing MAC: " ; disable all in command registers set_io 0 set_io REG_9346CR xor eax, eax out dx , al set_io REG_IMR xor eax, eax out dx , ax set_io REG_ISR mov eax, -1 out dx , ax ; enable writing set_io REG_9346CR mov eax, REG_9346CR_WE out dx , al ; write the mac ... set_io REG_IDR0 pop eax out dx , eax set_io REG_IDR0+4 xor eax, eax pop ax out dx , eax ; disable writing set_io REG_9346CR xor eax, eax out dx , al DEBUGF 2,"ok!\n" ; Notice this procedure does not ret, but continues to read_mac instead. ;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Read MAC address ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;; read_mac: DEBUGF 2,"Reading MAC: " set_io 0 lea edi, [device.mac] in eax, dx stosd add edx, 4 in ax, dx stosw DEBUGF 2,"%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 ; End of code section '.data' data readable writable align 16 ; place all uninitialized data place here align 4 ; Place all initialised data here devices dd 0 version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF) my_service db 'RTL8139',0 ; max 16 chars include zero device_1 db 'Realtek 8139',0 device_2 db 'Realtek 8139A',0 device_3 db 'Realtek 8139B',0 device_4 db 'Realtek 8139C',0 device_5 db 'Realtek 8100',0 device_6 db 'Realtek 8139D',0 device_7 db 'Realtek 8139CP',0 device_8 db 'Realtek 8101',0 device_unknown db 'Unknown RTL8139 clone', 0 crosslist: dd device_1 dd device_2 dd device_3 dd device_4 dd device_5 dd device_6 dd device_7 dd device_8 dd device_unknown hw_ver_array: ; This array is used by the probe routine to find out wich version of the RTL8139 we are working with db VER_RTL8139 db VER_RTL8139A db VER_RTL8139B db VER_RTL8139C db VER_RTL8100 db VER_RTL8139D db VER_RTL8139CP db VER_RTL8101 db 0 HW_VER_ARRAY_SIZE = $-hw_ver_array include_debug_strings ; All data wich FDO uses will be included here device_list rd MAX_DEVICES ; This list contains all pointers to device structures the driver is handling