;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Copyright (C) KolibriOS team 2004-2014. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; ;; ;; ;; Ethernet driver for KolibriOS ;; ;; This is an adaptation of MenuetOS driver with minimal changes. ;; ;; Changes were made by CleverMouse. Original copyright follows. ;; ;; ;; ;; This driver is based on the SIS900 driver from ;; ;; the etherboot 5.0.6 project. The copyright statement is ;; ;; ;; ;; GNU GENERAL PUBLIC LICENSE ;; ;; Version 2, June 1991 ;; ;; ;; ;; remaining parts Copyright 2004 Jason Delozier, ;; ;; cordata51@hotmail.com ;; ;; ;; ;; See file COPYING for details ;; ;; ;; ;; Updates: ;; ;; Revision Look up table and SIS635 Mac Address by Jarek Pelczar ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; format MS COFF NUM_RX_DESC = 4 ; Number of RX descriptors NUM_TX_DESC = 4 ; Number of TX descriptors RX_BUFF_SZ = 1520 ; Buffer size for each Rx buffer TX_BUFF_SZ = 1516 ; Buffer size for each Tx buffer MAX_ETH_FRAME_SIZE = 1516 API_VERSION = 0x01000100 DRIVER_VERSION = 5 MAX_DEVICES = 16 DEBUG = 1 __DEBUG__ = 1 __DEBUG_LEVEL__ = 2 DSIZE = 0x00000fff CRC_SIZE = 4 RFADDR_shift = 16 ; If you are having problems sending/receiving packet try changing the ; Max DMA Burst, Possible settings are as follows: ; ; 0x00000000 = 512 bytes ; 0x00100000 = 4 bytes ; 0x00200000 = 8 bytes ; 0x00300000 = 16 bytes ; 0x00400000 = 32 bytes ; 0x00500000 = 64 bytes ; 0x00600000 = 128 bytes ; 0x00700000 = 256 bytes RX_DMA = 0x00600000 TX_DMA = 0x00600000 ;------------------------------------------------------------------------------------------------- ; Symbolic offsets to registers. cr = 0x0 ; Command Register cfg = 0x4 ; Configuration Register mear = 0x8 ; EEPROM Access Register ptscr = 0xc ; PCI Test Control Register isr = 0x10 ; Interrupt Status Register imr = 0x14 ; Interrupt Mask Register ier = 0x18 ; Interrupt Enable Register epar = 0x18 ; Enhanced PHY Access Register txdp = 0x20 ; Transmit Descriptor Pointer Register txcfg = 0x24 ; Transmit Configuration Register rxdp = 0x30 ; Receive Descriptor Pointer Register rxcfg = 0x34 ; Receive Configuration Register flctrl = 0x38 ; Flow Control Register rxlen = 0x3c ; Receive Packet Length Register rfcr = 0x48 ; Receive Filter Control Register rfdr = 0x4C ; Receive Filter Data Register pmctrl = 0xB0 ; Power Management Control Register pmer = 0xB4 ; Power Management Wake-up Event Register ; Command Register Bits RELOAD = 0x00000400 ACCESSMODE = 0x00000200 RESET = 0x00000100 SWI = 0x00000080 RxRESET = 0x00000020 TxRESET = 0x00000010 RxDIS = 0x00000008 RxENA = 0x00000004 TxDIS = 0x00000002 TxENA = 0x00000001 ; Configuration Register Bits DESCRFMT = 0x00000100 ; 7016 specific REQALG = 0x00000080 SB = 0x00000040 POW = 0x00000020 EXD = 0x00000010 PESEL = 0x00000008 LPM = 0x00000004 BEM = 0x00000001 RND_CNT = 0x00000400 FAIR_BACKOFF = 0x00000200 EDB_MASTER_EN = 0x00002000 ; Eeprom Access Reigster Bits MDC = 0x00000040 MDDIR = 0x00000020 MDIO = 0x00000010 ; 7016 specific EECS = 0x00000008 EECLK = 0x00000004 EEDO = 0x00000002 EEDI = 0x00000001 ; TX Configuration Register Bits ATP = 0x10000000 ; Automatic Transmit Padding MLB = 0x20000000 ; Mac Loopback Enable HBI = 0x40000000 ; HeartBeat Ignore (Req for full-dup) CSI = 0x80000000 ; CarrierSenseIgnore (Req for full-du ; RX Configuration Register Bits AJAB = 0x08000000 ; ATX = 0x10000000 ; Accept Transmit Packets ARP = 0x40000000 ; accept runt packets (<64bytes) AEP = 0x80000000 ; accept error packets ; Interrupt Register Bits WKEVT = 0x10000000 TxPAUSEEND = 0x08000000 TxPAUSE = 0x04000000 TxRCMP = 0x02000000 ; Transmit Reset Complete RxRCMP = 0x01000000 ; Receive Reset Complete DPERR = 0x00800000 SSERR = 0x00400000 RMABT = 0x00200000 RTABT = 0x00100000 RxSOVR = 0x00010000 HIBERR = 0x00008000 SWINT = 0x00001000 MIBINT = 0x00000800 TxURN = 0x00000400 TxIDLE = 0x00000200 TxERR = 0x00000100 TxDESC = 0x00000080 TxOK = 0x00000040 RxORN = 0x00000020 RxIDLE = 0x00000010 RxEARLY = 0x00000008 RxERR = 0x00000004 RxDESC = 0x00000002 RxOK = 0x00000001 ; Interrupt Enable Register Bits IE = RxOK + TxOK ; Revision ID SIS900B_900_REV = 0x03 SIS630A_900_REV = 0x80 SIS630E_900_REV = 0x81 SIS630S_900_REV = 0x82 SIS630EA1_900_REV = 0x83 SIS630ET_900_REV = 0x84 SIS635A_900_REV = 0x90 SIS900_960_REV = 0x91 ; Receive Filter Control Register Bits RFEN = 0x80000000 ; enable RFAAB = 0x40000000 ; accept all broadcasts RFAAM = 0x20000000 ; accept all multicasts RFAAP = 0x10000000 ; accept all packets ; Reveive Filter Data Mask RFDAT = 0x0000FFFF ; Eeprom Address EEPROMSignature = 0x00 EEPROMVendorID = 0x02 EEPROMDeviceID = 0x03 EEPROMMACAddr = 0x08 EEPROMChecksum = 0x0b ; The EEPROM commands include the alway-set leading bit. EEread = 0x0180 EEwrite = 0x0140 EEerase = 0x01C0 EEwriteEnable = 0x0130 EEwriteDisable = 0x0100 EEeraseAll = 0x0120 EEwriteAll = 0x0110 EEaddrMask = 0x013F EEcmdShift = 16 ; For SiS962 or SiS963, request the eeprom software access EEREQ = 0x00000400 EEDONE = 0x00000200 EEGNT = 0x00000100 include '../struct.inc' include '../macros.inc' include '../proc32.inc' include '../imports.inc' include '../fdo.inc' include '../netdrv.inc' public START public version virtual at ebx device: ETH_DEVICE .io_addr dd ? .pci_bus dd ? .pci_dev dd ? .irq_line db ? .cur_rx db ? .cur_tx db ? .last_tx db ? .pci_revision db ? .table_entries db ? rb 2 ; alignment .txd rd (4 * NUM_TX_DESC) .rxd rd (4 * NUM_RX_DESC) .size = $ - device end virtual macro ee_delay { push eax in eax, dx in eax, dx in eax, dx in eax, dx in eax, dx in eax, dx in eax, dx in eax, dx in eax, dx in eax, dx pop eax } section '.flat' code readable align 16 ; Driver entry point - register our service when the driver is loading. ; TODO: add needed operations when unloading START: cmp dword [esp+4], 1 jne .exit stdcall RegService, my_service, service_proc ret 4 .exit: xor eax, eax ret 4 ; Service procedure for the driver - handle all I/O requests for the driver. ; Currently handled requests are: SRV_GETVERSION = 0 and SRV_HOOK = 1. service_proc: ; 1. Get parameter from the stack: [esp+4] is the first parameter, ; pointer to IOCTL structure. mov edx, [esp+4] ; edx -> IOCTL ; 2. Get request code and select a handler for the code. mov eax, [IOCTL.io_code] test eax, eax ; check for SRV_GETVERSION jnz @f ; 3. This is SRV_GETVERSION request, no input, 4 bytes output, API_VERSION. ; 3a. Output size must be at least 4 bytes. cmp [IOCTL.out_size], 4 jb .fail ; 3b. Write result to the output buffer. mov eax, [IOCTL.output] mov [eax], dword API_VERSION ; 3c. Return success. xor eax, eax ret 4 @@: dec eax ; check for SRV_HOOK jnz .fail ; 4. This is SRV_HOOK request, input defines the device to hook, no output. ; 4a. The driver works only with PCI devices, ; so input must be at least 3 bytes long. cmp [IOCTL.inp_size], 3 jb .fail ; 4b. First byte of input is bus type, 1 stands for PCI. mov eax, [IOCTL.input] cmp byte [eax], 1 jne .fail ; 4c. Second and third bytes of the input define the device: bus and dev. ; Word in bx holds both bytes. mov bx, [eax+1] ; 4d. Check if the device was already hooked, ; scan through the list of known devices. ; 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 al, byte[device.pci_bus] jne @f cmp ah, byte[device.pci_dev] je .find_devicenum ; Device is already loaded, let's find it's device number @@: add esi, 4 loop .nextdevice ; 4e. This device doesn't have its own eth_device structure yet, let's create one .firstdevice: ; 4f. Check that we have place for new device. cmp [devices], MAX_DEVICES jae .fail ; 4g. Allocate memory for device descriptor and receive+transmit buffers. ; 4h. Zero the structure. allocate_and_clear ebx, device.size, .fail ; 4i. Save PCI coordinates mov eax, [IOCTL.input] movzx ecx, byte[eax+1] mov [device.pci_bus], ecx movzx ecx, byte[eax+2] mov [device.pci_dev], ecx ; 4j. Fill in the direct call addresses into the struct. mov [device.reset], reset mov [device.transmit], transmit mov [device.unload], unload mov [device.name], my_service ; 4k. 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 ; Now, it's time to find the base io addres of the PCI device PCI_find_io ; We've found the io address, find IRQ now PCI_find_irq ; 4m. Add new device to the list (required for int_handler). mov eax, [devices] mov [device_list+4*eax], ebx inc [devices] ; 4m. Ok, the eth_device structure is ready, let's probe the device call probe test eax, eax jnz .destroy ; 4n. If device was successfully initialized, register it for the kernel. mov [device.type], NET_TYPE_ETH call NetRegDev cmp eax, -1 je .destroy ret 4 ; 5. If the device was already loaded, find the device number and return it in eax .find_devicenum: 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 ret 4 ; If an error occured, remove all allocated data and exit (returning -1 in eax) .destroy: dec [devices] ; todo: reset device into virgin state .err: stdcall KernelFree, ebx .fail: xor eax, eax ret 4 ;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;; ;; ;; ;; Actual Hardware dependent code starts here ;; ;; ;; ;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;; unload: ; TODO: (in this particular order) ; ; - Stop the device ; - Detach int handler ; - Remove device from local list ; - call unregister function in kernel ; - Remove all allocated structures and buffers the card used or eax,-1 ret ;*************************************************************************** ; ; probe ; ; checks the card and enables it ; ; TODO: probe mii transceivers ; ;*************************************************************************** align 4 probe: DEBUGF 1, "Probe\n" ; wake up device CHECKME stdcall PciWrite8, [device.pci_bus], [device.pci_dev], 0x40, 0 PCI_make_bus_master PCI_adjust_latency 64 ; Get Card Revision stdcall PciRead8, [device.pci_bus], [device.pci_dev], 0x08 mov [device.pci_revision], al ; save the revision for later use ; Look up through the specific_table mov esi, specific_table .tableloop: cmp dword [esi], 0 ; Check if we reached end of the list je .notsupported cmp al, [esi] ; Check if revision is OK je .ok add esi, 12 ; Advance to next entry jmp .tableloop .ok: call dword[esi + 4] ; "get MAC" function ; Set table entries mov [device.table_entries], 16 cmp [device.pci_revision], SIS635A_900_REV jae @f cmp [device.pci_revision], SIS900B_900_REV je @f mov [device.table_entries], 8 @@: ; TODO: Probe for mii transceiver jmp reset .notsupported: DEBUGF 1, "Device not supported\n" or eax, -1 ret reset: DEBUGF 1, "reset\n" movzx eax, [device.irq_line] stdcall AttachIntHandler, eax, int_handler, 0 ;-------------------------------------------- ; Disable Interrupts and reset Receive Filter set_io 0 set_io ier xor eax, eax out dx, eax set_io imr out dx, eax set_io rfcr out dx, eax ;----------- ; Reset Card set_io cr in eax, dx ; Get current Command Register or eax, RESET + RxRESET + TxRESET ; set flags out dx, eax ; Write new Command Register ;---------- ; Wait loop set_io isr mov ecx, 1000 .loop: dec ecx jz .fail in eax, dx ; read interrupt status test eax, TxRCMP + RxRCMP jz .loop DEBUGF 1, "status=%x\n", eax ;------------------------------------------------------ ; Set Configuration Register depending on Card Revision set_io cfg mov eax, PESEL ; Configuration Register Bit cmp [device.pci_revision], SIS635A_900_REV je .match cmp [device.pci_revision], SIS900B_900_REV ; Check card revision jne .done .match: ; Revision match or eax, RND_CNT ; Configuration Register Bit .done: out dx, eax DEBUGF 1, "Initialising RX Filter\n" ; Get Receive Filter Control Register set_io rfcr in eax, dx push eax ; disable packet filtering before setting filter and eax, not RFEN out dx, eax ; load MAC addr to filter data register xor ecx, ecx .macloop: mov eax, ecx set_io 0 set_io rfcr shl eax, 16 ; high word of eax tells card which mac byte to write out dx, eax ; set_io rfdr mov ax, word [device.mac + ecx*2] ; Get Mac ID word out dx, ax ; Send Mac ID inc cl ; send next word cmp cl, 3 ; more to send? jne .macloop ; enable packet filtering pop eax ; old register value set_io rfcr or eax, RFEN ; enable filtering out dx, eax ; set register DEBUGF 1, "Initialising TX Descriptors\n" mov ecx, NUM_TX_DESC lea esi, [device.txd] .txdescloop: lea eax, [esi + 16] ; next ptr GetRealAddr mov dword [esi], eax ; link to next desc mov dword [esi + 4], 0 ; status field mov dword [esi + 8], 0 ; ptr to buffer add esi, 16 dec ecx jnz .txdescloop lea eax, [device.txd] GetRealAddr mov dword [esi - 16], eax ; correct last descriptor link ptr set_io txdp ; TX Descriptor Pointer ; lea eax, [device.txd] ; GetRealAddr out dx, eax mov [device.cur_tx], 0 ; Set current tx descriptor to 0 mov [device.last_tx], 0 DEBUGF 1, "Initialising RX Descriptors\n" mov ecx, NUM_RX_DESC lea esi, [device.rxd] .rxdescloop: lea eax, [esi + 16] ; next ptr GetRealAddr mov dword [esi], eax mov dword [esi + 4], RX_BUFF_SZ ; size push ecx esi stdcall KernelAlloc, RX_BUFF_SZ pop esi ecx test eax, eax jz .fail mov dword [esi + 12], eax ; address GetRealAddr mov dword [esi + 8], eax ; real address add esi, 16 dec ecx jnz .rxdescloop lea eax, [device.rxd] GetRealAddr mov dword [esi - 16], eax ; correct last descriptor link ptr set_io 0 set_io rxdp ; lea eax, [device.rxd] ; GetRealAddr out dx, eax mov [device.cur_rx], 0 ; Set current rx descriptor to 0 DEBUGF 1, "setting RX mode\n" xor cl, cl .rxfilterloop: set_io 0 set_io rfcr ; Receive Filter Control Reg offset mov eax, 4 ; determine table entry add al, cl shl eax, 16 out dx, eax ; tell card which entry to modify set_io rfdr ; Receive Filter Control Reg offset mov eax, 0xffff ; entry value out dx, ax ; write value to table in card inc cl ; next entry cmp cl, [device.table_entries] jb .rxfilterloop set_io rfcr ; Receive Filter Control Register offset mov eax, RFAAB + RFAAM + RFAAP + RFEN out dx, eax set_io rxcfg ; Receive Config Register offset mov eax, ATX + RX_DMA + 2 ; 0x2 : RX Drain Threshold = 8*8=64 bytes out dx, eax DEBUGF 1, "setting TX mode\n" set_io txcfg ; Transmit config Register offset mov eax, ATP + HBI + CSI + TX_DMA + 0x120 ; TX Fill threshold = 0x100 ; TX Drain Threshold = 0x20 out dx, eax DEBUGF 1, "Enabling interrupts\n" set_io imr mov eax, IE ; Interrupt enable mask out dx, eax set_io cr in eax, dx or eax, RxENA ; Enable Receive out dx, eax set_io ier ; Interrupt enable mov eax, 1 out dx, eax mov [device.mtu], 1514 ; Set link state to unknown mov [device.state], ETH_LINK_UNKOWN xor eax, eax ret .fail: DEBUGF 1, "Resetting device failed\n" or eax, -1 ret ;*************************************************************************** ; ; SIS960_get_mac_addr: - Get MAC address for SiS962 or SiS963 model ; ; SiS962 or SiS963 model, use EEPROM to store MAC address. ; EEPROM is shared by LAN and 1394. ; When access EEPROM, send EEREQ signal to hardware first, and wait for EEGNT. ; If EEGNT is ON, EEPROM is permitted to be accessed by LAN, otherwise is not. ; After MAC address is read from EEPROM, send ; EEDONE signal to refuse EEPROM access by LAN. ; The EEPROM map of SiS962 or SiS963 is different to SiS900. ; The signature field in SiS962 or SiS963 spec is meaningless. ; ; Return 0 is EAX = failure ; ;*************************************************************************** align 4 SIS960_get_mac_addr: DEBUGF 1, "SIS960 - get mac: " ;------------------------------- ; Send Request for eeprom access set_io 0 set_io mear ; Eeprom access register mov eax, EEREQ ; Request access to eeprom out dx, eax ; Send request ;----------------------------------------------------- ; Loop 4000 times and if access not granted, error out mov ecx, 4000 .loop: in eax, dx ; get eeprom status test eax, EEGNT ; see if eeprom access granted flag is set jnz .got_access ; if it is, go access the eeprom loop .loop ; else keep waiting DEBUGF 1, "Access to EEprom failed!\n", 0 set_io mear ; Eeprom access register mov eax, EEDONE ; tell eeprom we are done out dx, eax or eax, -1 ; error ret .got_access: ;------------------------------------------ ; EEprom access granted, read MAC from card ; zero based so 3-16 bit reads will take place mov ecx, 2 .read_loop: mov eax, EEPROMMACAddr ; Base Mac Address add eax, ecx ; Current Mac Byte Offset push ecx call read_eeprom ; try to read 16 bits pop ecx mov word [device.mac+ecx*2], ax ; save 16 bits to the MAC ID varible dec ecx ; one less word to read jns .read_loop ; if more read more mov eax, 1 ; return non-zero indicating success DEBUGF 2,"%x-%x-%x-%x-%x-%x\n",[device.mac]:2,[device.mac+1]:2,[device.mac+2]:2,[device.mac+3]:2,[device.mac+4]:2,[device.mac+5]:2 ;------------------------------------- ; Tell EEPROM We are Done Accessing It .done: set_io 0 set_io mear ; Eeprom access register mov eax, EEDONE ; tell eeprom we are done out dx, eax xor eax, eax ; ok ret ;*************************************************************************** ; ; get_mac_addr: - Get MAC address for stand alone SiS900 model ; ; Older SiS900 and friends, use EEPROM to store MAC address. ; ;*************************************************************************** align 4 SIS900_get_mac_addr: DEBUGF 1, "SIS900 - get mac: " ;------------------------------------ ; check to see if we have sane EEPROM mov eax, EEPROMSignature ; Base Eeprom Signature call read_eeprom ; try to read 16 bits cmp ax, 0xffff je .err test ax, ax je .err ;----------- ; Read MacID ; zero based so 3-16 bit reads will take place mov ecx, 2 .loop: mov eax, EEPROMMACAddr ; Base Mac Address add eax, ecx ; Current Mac Byte Offset push ecx call read_eeprom ; try to read 16 bits pop ecx mov word [device.mac+ecx*2], ax ; save 16 bits to the MAC ID storage dec ecx ; one less word to read jns .loop ; if more read more DEBUGF 2,"%x-%x-%x-%x-%x-%x\n",[device.mac]:2,[device.mac+1]:2,[device.mac+2]:2,[device.mac+3]:2,[device.mac+4]:2,[device.mac+5]:2 xor eax, eax ret .err: DEBUGF 1, "Access to EEprom failed!\n", 0 or eax, -1 ret ;*************************************************************************** ; ; Get_Mac_SIS635_900_REV: - Get MAC address for model 635 ; ;*************************************************************************** align 4 Get_Mac_SIS635_900_REV: DEBUGF 1, "SIS635 - get mac: " set_io 0 set_io rfcr in eax, dx mov esi, eax set_io cr or eax, RELOAD out dx, eax xor eax, eax out dx, eax ;----------------------------------------------- ; Disable packet filtering before setting filter set_io rfcr mov eax, esi and eax, not RFEN out dx, eax ;--------------------------------- ; Load MAC to filter data register xor ecx, ecx lea edi, [device.mac] .loop: set_io 0 set_io rfcr mov eax, ecx shl eax, RFADDR_shift out dx, eax set_io rfdr in ax, dx stosw inc ecx cmp ecx, 3 jb .loop ;------------------------ ; Enable packet filtering set_io rfcr mov eax, esi or eax, RFEN out dx, eax DEBUGF 2,"%x-%x-%x-%x-%x-%x\n",[device.mac]:2,[device.mac+1]:2,[device.mac+2]:2,[device.mac+3]:2,[device.mac+4]:2,[device.mac+5]:2 xor eax, eax ret ;*************************************************************************** ; ; read_eeprom ; ; reads and returns a given location from EEPROM ; ; IN: si = addr ; OUT: ax = data ; ;*************************************************************************** align 4 read_eeprom: set_io 0 set_io mear xor eax, eax ; start send out dx, eax ee_delay or eax, EECLK out dx, eax ee_delay ;------------------------------------ ; Send the read command or esi, EEread mov ecx, 1 shl 9 .loop: mov eax, EECS test esi, ecx jz @f or eax, EEDI @@: out dx, eax ee_delay or eax, EECLK out dx, eax ee_delay shr esi, 1 jnc .loop mov eax, EECS out dx, eax ee_delay ;------------------------ ; Read 16-bits of data in xor esi, esi mov cx, 16 .loop2: mov eax, EECS out dx, eax ee_delay or eax, EECLK out dx, eax ee_delay in eax, dx shl esi, 1 test eax, EEDO jz @f inc esi @@: loop .loop2 ;---------------------------- ; Terminate the EEPROM access xor eax, eax out dx, eax ee_delay mov eax, EECLK out dx, eax ee_delay movzx eax, si ret align 4 write_mac: DEBUGF 1,'Setting MAC is not supported for SIS900 card.\n' add esp, 6 ret ;*************************************************************************** ; Function ; transmit ; Description ; Transmits a packet of data via the ethernet card ; buffer pointer in [esp+4] ; size of buffer in [esp+8] ; pointer to device structure in ebx ; ;*************************************************************************** align 4 transmit: DEBUGF 1,"Transmitting 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 ja .error cmp dword [esp + 8], 60 jb .error movzx ecx, [device.cur_tx] shl ecx, 4 ; *16 lea ecx, [device.txd + ecx] test dword [ecx + 4], 0x80000000 ; card owns descriptor ? jnz .error mov eax, [esp + 4] mov dword [ecx + 12], eax GetRealAddr mov dword [ecx + 8], eax ; buffer address mov eax, [esp + 8] and eax, DSIZE or eax, 0x80000000 ; card owns descriptor mov dword [ecx + 4], eax ; status field set_io 0 set_io cr in eax, dx or eax, TxENA ; Enable the transmit state machine out dx, eax inc [device.cur_tx] and [device.cur_tx], NUM_TX_DESC-1 ; update stats mov ecx, [esp + 8] inc [device.packets_tx] add dword [device.bytes_tx], ecx adc dword [device.bytes_tx + 4], 0 .finish: DEBUGF 1,"Packet sent!\n" xor eax, eax ret 8 .error: DEBUGF 1,"ERROR!\n" stdcall KernelFree, [esp+4] or eax, -1 ret 8 ;*************************************************************************** ; ; int_handler ; ; handles received IRQs, which signal received packets ; ; Currently only supports one descriptor per packet, if packet is fragmented ; between multiple descriptors you will lose part of the packet ; ;*************************************************************************** align 4 int_handler: push ebx esi edi DEBUGF 1,"\n%s int\n", my_service ; find pointer of device which made IRQ occur mov ecx, [devices] test ecx, ecx jz .nothing mov esi, device_list .nextdevice: mov ebx, [esi] set_io 0 set_io isr in eax, dx ; note that this clears all interrupts test ax, IE jnz .got_it .continue: add esi, 4 dec ecx jnz .nextdevice .nothing: pop edi esi ebx xor eax, eax ret .got_it: DEBUGF 1,"Device: %x Status: %x ", ebx, ax test ax, RxOK jz .no_rx_ push ax .rx_loop: ;----------- ; Get Status movzx eax, [device.cur_rx] ; find current descriptor shl eax, 4 ; * 16 mov ecx, dword[device.rxd + eax + 4] ; get receive status ;------------------------------------------- ; Check RX_Status to see if packet is waiting test ecx, 0x80000000 jz .no_rx ;---------------------------------------------- ; There is a packet waiting check it for errors test ecx, 0x67C0000 ; see if there are any errors jnz .error_status ;--------------------- ; Check size of packet and ecx, DSIZE ; get packet size minus CRC sub ecx, CRC_SIZE ; make sure packet contains data jbe .error_size ; update statistics inc dword [device.packets_rx] add dword [device.bytes_rx], ecx adc dword [device.bytes_rx + 4], 0 push ebx push .return push ecx ; packet size pushd [device.rxd + eax + 12] ; packet ptr DEBUGF 1, "Packet received OK\n" jmp Eth_input .return: pop ebx ; Reset status, allow ethernet card access to descriptor stdcall KernelAlloc, RX_BUFF_SZ test eax, eax jz .fail movzx ecx, [device.cur_rx] shl ecx, 4 ; *16 lea ecx, [device.rxd + ecx] mov dword [ecx + 12], eax GetRealAddr mov dword [ecx + 8], eax mov dword [ecx + 4], RX_BUFF_SZ inc [device.cur_rx] ; get next descriptor and [device.cur_rx], NUM_RX_DESC-1 ; only 4 descriptors 0-3 jmp .rx_loop .no_rx: set_io 0 set_io cr in eax, dx or eax, RxENA ; Re-Enable the Receive state machine out dx, eax pop ax .no_rx_: test ax, TxOK jz .no_tx DEBUGF 1, "TX ok!\n" .tx_loop: movzx ecx, [device.last_tx] shl ecx, 4 ; *16 lea ecx, [device.txd + ecx] test dword [ecx + 4], 0x80000000 ; card owns descr jnz .no_tx cmp dword [ecx + 12], 0 je .no_tx DEBUGF 1, "Freeing packet = %x\n", [ecx + 12]:8 push dword [ecx + 12] mov dword [ecx + 12], 0 call KernelFree inc [device.last_tx] and [device.last_tx], NUM_TX_DESC-1 jmp .tx_loop .no_tx: .fail: pop edi esi ebx xor eax, eax inc eax ret ret .error_status: DEBUGF 1, "Packet error: %x\n", ecx jmp .fail .error_size: DEBUGF 1, "Packet too large/small\n" jmp .fail ; End of code align 4 ; Place all initialised data here devices dd 0 specific_table: ; dd SIS630A_900_REV, Get_Mac_SIS630A_900_REV, 0 ; dd SIS630E_900_REV, Get_Mac_SIS630E_900_REV, 0 dd SIS630S_900_REV, Get_Mac_SIS635_900_REV, 0 dd SIS630EA1_900_REV, Get_Mac_SIS635_900_REV, 0 dd SIS630ET_900_REV, Get_Mac_SIS635_900_REV, 0 ;SIS630ET_900_REV_SpecialFN dd SIS635A_900_REV, Get_Mac_SIS635_900_REV, 0 dd SIS900_960_REV, SIS960_get_mac_addr, 0 dd SIS900B_900_REV, SIS900_get_mac_addr, 0 dd 0 ; end of list version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF) my_service db 'SIS900',0 ; max 16 chars include zero 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 device_list rd MAX_DEVICES ; This list contains all pointers to device structures the driver is handling