$Revision: 431 $ ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; ;; ;; ;; SIS900.INC ;; ;; ;; ;; Ethernet driver for Menuet OS ;; ;; ;; ;; Version 0.4 26 April 2004 ;; ;; ;; ;; 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 ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;******************************************************************** ; Interface ; SIS900_reset ; SIS900_probe ; SIS900_poll ; SIS900_transmit ; ;******************************************************************** ;******************************************************************** ; Comments: ; Known to work with the following SIS900 ethernet cards: ; - Device ID: 0x0900 Vendor ID: 0x1039 Revision: 0x91 ; - Device ID: 0x0900 Vendor ID: 0x1039 Revision: 0x90 ; ; If your card is not listed, try it and let me know if it ; functions properly and it will be aded to the list. If not ; we may be able to add support for it. ; ; How To Use: ; Add the following lines to Ethernet.inc in their appropriate locations ; ; include "Sis900.INC" ; dd 0x09001039, SIS900_probe, SIS900_reset, SIS900_poll, ; SIS900_transmit ; dd 0x70161039, SIS900_probe, SIS900_reset, SIS900_poll, ; SIS900_transmit ;untested ; ; ToDo: ; - Enable MII interface for reading speed ; and duplex settings. ; ; - Update Poll routine to support packet fragmentation. ; ; - Add additional support for other sis900 based cards ; ;******************************************************************** ; comment the next line out if you don't want debug info printed ; on the debug board. This option adds a lot of bytes to the driver ; so it's worth to comment it out. ; SIS900_DEBUG equ 1 ;* buffers and descriptors cur_rx db 0 NUM_RX_DESC equ 4 ;* Number of RX descriptors * NUM_TX_DESC equ 1 ;* Number of TX descriptors * RX_BUFF_SZ equ 1520 ;* Buffer size for each Rx buffer * TX_BUFF_SZ equ 1516 ;* Buffer size for each Tx buffer * uglobal align 4 txd: times (3 * NUM_TX_DESC) dd 0 rxd: times (3 * NUM_RX_DESC) dd 0 endg txb equ eth_data_start rxb equ txb + (NUM_TX_DESC * TX_BUFF_SZ) SIS900_ETH_ALEN equ 6 ;* Size of Ethernet address * SIS900_ETH_HLEN equ 14 ;* Size of ethernet header * SIS900_ETH_ZLEN equ 60 ;* Minimum packet length * SIS900_DSIZE equ 0x00000fff SIS900_CRC_SIZE equ 4 SIS900_RFADDR_shift equ 16 ;SIS900 Symbolic offsets to registers. SIS900_cr equ 0x0 ; Command Register SIS900_cfg equ 0x4 ; Configuration Register SIS900_mear equ 0x8 ; EEPROM Access Register SIS900_ptscr equ 0xc ; PCI Test Control Register SIS900_isr equ 0x10 ; Interrupt Status Register SIS900_imr equ 0x14 ; Interrupt Mask Register SIS900_ier equ 0x18 ; Interrupt Enable Register SIS900_epar equ 0x18 ; Enhanced PHY Access Register SIS900_txdp equ 0x20 ; Transmit Descriptor Pointer Register SIS900_txcfg equ 0x24 ; Transmit Configuration Register SIS900_rxdp equ 0x30 ; Receive Descriptor Pointer Register SIS900_rxcfg equ 0x34 ; Receive Configuration Register SIS900_flctrl equ 0x38 ; Flow Control Register SIS900_rxlen equ 0x3c ; Receive Packet Length Register SIS900_rfcr equ 0x48 ; Receive Filter Control Register SIS900_rfdr equ 0x4C ; Receive Filter Data Register SIS900_pmctrl equ 0xB0 ; Power Management Control Register SIS900_pmer equ 0xB4 ; Power Management Wake-up Event Register ;SIS900 Command Register Bits SIS900_RELOAD equ 0x00000400 SIS900_ACCESSMODE equ 0x00000200 SIS900_RESET equ 0x00000100 SIS900_SWI equ 0x00000080 SIS900_RxRESET equ 0x00000020 SIS900_TxRESET equ 0x00000010 SIS900_RxDIS equ 0x00000008 SIS900_RxENA equ 0x00000004 SIS900_TxDIS equ 0x00000002 SIS900_TxENA equ 0x00000001 ;SIS900 Configuration Register Bits SIS900_DESCRFMT equ 0x00000100 ; 7016 specific SIS900_REQALG equ 0x00000080 SIS900_SB equ 0x00000040 SIS900_POW equ 0x00000020 SIS900_EXD equ 0x00000010 SIS900_PESEL equ 0x00000008 SIS900_LPM equ 0x00000004 SIS900_BEM equ 0x00000001 SIS900_RND_CNT equ 0x00000400 SIS900_FAIR_BACKOFF equ 0x00000200 SIS900_EDB_MASTER_EN equ 0x00002000 ;SIS900 Eeprom Access Reigster Bits SIS900_MDC equ 0x00000040 SIS900_MDDIR equ 0x00000020 SIS900_MDIO equ 0x00000010 ; 7016 specific SIS900_EECS equ 0x00000008 SIS900_EECLK equ 0x00000004 SIS900_EEDO equ 0x00000002 SIS900_EEDI equ 0x00000001 ;SIS900 TX Configuration Register Bits SIS900_ATP equ 0x10000000 ;Automatic Transmit Padding SIS900_MLB equ 0x20000000 ;Mac Loopback Enable SIS900_HBI equ 0x40000000 ;HeartBeat Ignore (Req for full-dup) SIS900_CSI equ 0x80000000 ;CarrierSenseIgnore (Req for full-du ;SIS900 RX Configuration Register Bits SIS900_AJAB equ 0x08000000 ; SIS900_ATX equ 0x10000000 ;Accept Transmit Packets SIS900_ARP equ 0x40000000 ;accept runt packets (<64bytes) SIS900_AEP equ 0x80000000 ;accept error packets ;SIS900 Interrupt Reigster Bits SIS900_WKEVT equ 0x10000000 SIS900_TxPAUSEEND equ 0x08000000 SIS900_TxPAUSE equ 0x04000000 SIS900_TxRCMP equ 0x02000000 SIS900_RxRCMP equ 0x01000000 SIS900_DPERR equ 0x00800000 SIS900_SSERR equ 0x00400000 SIS900_RMABT equ 0x00200000 SIS900_RTABT equ 0x00100000 SIS900_RxSOVR equ 0x00010000 SIS900_HIBERR equ 0x00008000 SIS900_SWINT equ 0x00001000 SIS900_MIBINT equ 0x00000800 SIS900_TxURN equ 0x00000400 SIS900_TxIDLE equ 0x00000200 SIS900_TxERR equ 0x00000100 SIS900_TxDESC equ 0x00000080 SIS900_TxOK equ 0x00000040 SIS900_RxORN equ 0x00000020 SIS900_RxIDLE equ 0x00000010 SIS900_RxEARLY equ 0x00000008 SIS900_RxERR equ 0x00000004 SIS900_RxDESC equ 0x00000002 SIS900_RxOK equ 0x00000001 ;SIS900 Interrupt Enable Reigster Bits SIS900_IE equ 0x00000001 ;SIS900 Revision ID SIS900B_900_REV equ 0x03 SIS630A_900_REV equ 0x80 SIS630E_900_REV equ 0x81 SIS630S_900_REV equ 0x82 SIS630EA1_900_REV equ 0x83 SIS630ET_900_REV equ 0x84 SIS635A_900_REV equ 0x90 SIS900_960_REV equ 0x91 ;SIS900 Receive Filter Control Register Bits SIS900_RFEN equ 0x80000000 SIS900_RFAAB equ 0x40000000 SIS900_RFAAM equ 0x20000000 SIS900_RFAAP equ 0x10000000 SIS900_RFPromiscuous equ 0x70000000 ;SIS900 Reveive Filter Data Mask SIS900_RFDAT equ 0x0000FFFF ;SIS900 Eeprom Address SIS900_EEPROMSignature equ 0x00 SIS900_EEPROMVendorID equ 0x02 SIS900_EEPROMDeviceID equ 0x03 SIS900_EEPROMMACAddr equ 0x08 SIS900_EEPROMChecksum equ 0x0b ;The EEPROM commands include the alway-set leading bit. ;SIS900 Eeprom Command SIS900_EEread equ 0x0180 SIS900_EEwrite equ 0x0140 SIS900_EEerase equ 0x01C0 SIS900_EEwriteEnable equ 0x0130 SIS900_EEwriteDisable equ 0x0100 SIS900_EEeraseAll equ 0x0120 SIS900_EEwriteAll equ 0x0110 SIS900_EEaddrMask equ 0x013F SIS900_EEcmdShift equ 16 ;For SiS962 or SiS963, request the eeprom software access SIS900_EEREQ equ 0x00000400 SIS900_EEDONE equ 0x00000200 SIS900_EEGNT equ 0x00000100 ;General Varibles SIS900_pci_revision: db 0 SIS900_Status dd 0x03000000 sis900_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 0,0,0,0 ; end of list sis900_get_mac_func: dd 0 sis900_special_func: dd 0 sis900_table_entries: db 8 ;*************************************************************************** ; Function ; SIS900_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 ;not done - still need to probe mii transcievers ;*************************************************************************** if defined SIS900_DEBUG SIS900_Debug_Str_Unsupported db 'Sorry your card is unsupported ',13,10,0 end if SIS900_probe: ;******Wake Up Chip******* mov al, 4 mov bh, [pci_dev] mov ecx, 0 mov ah, [pci_bus] mov bl, 0x40 call pci_write_reg ;*******Set some PCI Settings********* call SIS900_adjust_pci_device ;*****Get Card Revision****** mov al, 1 ;one byte to read mov bh, [pci_dev] mov ah, [pci_bus] mov bl, 0x08 ;Revision Register call pci_read_reg mov [SIS900_pci_revision], al ;save the revision for later use ;****** Look up through the sis900_specific_table mov esi,sis900_specific_table .probe_loop: cmp dword [esi],0 ; Check if we reached end of the list je .probe_loop_failed cmp al,[esi] ; Check if revision is OK je .probe_loop_ok add esi,12 ; Advance to next entry jmp .probe_loop .probe_loop_failed: jmp SIS900_Probe_Unsupported ;*********Find Get Mac Function********* .probe_loop_ok: mov eax,[esi+4] ; Get pointer to "get MAC" function mov [sis900_get_mac_func],eax mov eax,[esi+8] ; Get pointer to special initialization fn mov [sis900_special_func],eax ;******** Get MAC ******** call dword [sis900_get_mac_func] ;******** Call special initialization fn if requested ******** cmp dword [sis900_special_func],0 je .no_special_init call dword [sis900_special_func] .no_special_init: ;******** Set table entries ******** mov al,[SIS900_pci_revision] cmp al,SIS635A_900_REV jae .ent16 cmp al,SIS900B_900_REV je .ent16 jmp .ent8 .ent16: mov byte [sis900_table_entries],16 .ent8: ;*******Probe for mii transceiver******* ;TODO!!********************* ;*******Initialize Device******* call sis900_init ret SIS900_Probe_Unsupported: if defined SIS900_DEBUG mov esi, SIS900_Debug_Str_Unsupported call sys_msg_board_str end if ret ;*************************************************************************** ; Function: sis900_init ; ; Description: resets the ethernet controller chip and various ; data structures required for sending and receiving packets. ; ; Arguments: ; ; returns: none ;not done ;*************************************************************************** sis900_init: call SIS900_reset ;Done call SIS900_init_rxfilter ;Done call SIS900_init_txd ;Done call SIS900_init_rxd ;Done call SIS900_set_rx_mode ;done call SIS900_set_tx_mode ;call SIS900_check_mode ret ;*************************************************************************** ; Function ; SIS900_reset ; Description ; disables interrupts and soft resets the controller chip ; ;done+ ;*************************************************************************** if defined SIS900_DEBUG SIS900_Debug_Reset_Failed db 'Reset Failed ',0 end if SIS900_reset: ;******Disable Interrupts and reset Receive Filter******* mov ebp, [io_addr] ; base address xor eax, eax ; 0 to initialize lea edx,[ebp+SIS900_ier] out dx, eax ; Write 0 to location lea edx,[ebp+SIS900_imr] out dx, eax ; Write 0 to location lea edx,[ebp+SIS900_rfcr] out dx, eax ; Write 0 to location ;*******Reset Card*********************************************** lea edx,[ebp+SIS900_cr] in eax, dx ; Get current Command Register or eax, SIS900_RESET ; set flags or eax, SIS900_RxRESET ; or eax, SIS900_TxRESET ; out dx, eax ; Write new Command Register ;*******Wait Loop************************************************ lea edx,[ebp+SIS900_isr] mov ecx, [SIS900_Status] ; Status we would like to see from card mov ebx, 2001 ; only loop 1000 times SIS900_Wait: dec ebx ; 1 less loop jz SIS900_DoneWait_e ; 1000 times yet? in eax, dx ; move interrup status to eax and eax, ecx xor ecx, eax jz SIS900_DoneWait jmp SIS900_Wait SIS900_DoneWait_e: if defined SIS900_DEBUG mov esi, SIS900_Debug_Reset_Failed call sys_msg_board_str end if SIS900_DoneWait: ;*******Set Configuration Register depending on Card Revision******** lea edx,[ebp+SIS900_cfg] mov eax, SIS900_PESEL ; Configuration Register Bit mov bl, [SIS900_pci_revision] ; card revision mov cl, SIS635A_900_REV ; Check card revision cmp bl, cl je SIS900_RevMatch mov cl, SIS900B_900_REV ; Check card revision cmp bl, cl je SIS900_RevMatch out dx, eax ; no revision match jmp SIS900_Reset_Complete SIS900_RevMatch: ; Revision match or eax, SIS900_RND_CNT ; Configuration Register Bit out dx, eax SIS900_Reset_Complete: mov eax, [pci_data] mov [eth_status], eax ret ;*************************************************************************** ; Function: sis_init_rxfilter ; ; Description: sets receive filter address to our MAC address ; ; Arguments: ; ; returns: ;done+ ;*************************************************************************** SIS900_init_rxfilter: ;****Get Receive Filter Control Register ******** mov ebp, [io_addr] ; base address lea edx,[ebp+SIS900_rfcr] in eax, dx ; get register push eax ;****disable packet filtering before setting filter******* mov eax, SIS900_RFEN ;move receive filter enable flag not eax ;1s complement pop ebx ;and with our saved register and eax, ebx ;disable receiver push ebx ;save filter for another use out dx, eax ;set receive disabled ;********load MAC addr to filter data register********* xor ecx, ecx SIS900_RXINT_Mac_Write: ;high word of eax tells card which mac byte to write mov eax, ecx lea edx,[ebp+SIS900_rfcr] shl eax, 16 ; out dx, eax ; lea edx,[ebp+SIS900_rfdr] mov ax, word [node_addr+ecx*2] ; Get Mac ID word out dx, ax ; Send Mac ID inc cl ; send next word cmp cl, 3 ; more to send? jne SIS900_RXINT_Mac_Write ;********enable packet filitering ***** pop eax ;old register value lea edx,[ebp+SIS900_rfcr] or eax, SIS900_RFEN ;enable filtering out dx, eax ;set register ret ;*************************************************************************** ;* ;* Function: sis_init_txd ;* ;* Description: initializes the Tx descriptor ;* ;* Arguments: ;* ;* returns: ;*done ;*************************************************************************** SIS900_init_txd: ;********** initialize TX descriptor ************** mov [txd], dword 0 ;put link to next descriptor in link field mov [txd+4],dword 0 ;clear status field mov [txd+8], dword txb ;save address to buffer ptr field ;*************** load Transmit Descriptor Register *************** mov dx, [io_addr] ; base address add dx, SIS900_txdp ; TX Descriptor Pointer mov eax, txd ; First Descriptor out dx, eax ; move the pointer ret ;*************************************************************************** ;* Function: sis_init_rxd ;* ;* Description: initializes the Rx descriptor ring ;* ;* Arguments: ;* ;* Returns: ;*done ;*************************************************************************** SIS900_init_rxd: xor ecx,ecx mov [cur_rx], cl ;Set cuurent rx discriptor to 0 ;******** init RX descriptors ******** SIS900_init_rxd_Loop: mov eax, ecx ;current descriptor imul eax, 12 ; mov ebx, ecx ;determine next link descriptor inc ebx ; cmp ebx, NUM_RX_DESC ; jne SIS900_init_rxd_Loop_0 ; xor ebx, ebx ; SIS900_init_rxd_Loop_0: ; imul ebx, 12 ; add ebx, rxd ; mov [rxd+eax], ebx ;save link to next descriptor mov [rxd+eax+4],dword RX_BUFF_SZ ;status bits init to buf size mov ebx, ecx ;find where the buf is located imul ebx,RX_BUFF_SZ ; add ebx, rxb ; mov [rxd+eax+8], ebx ;save buffer pointer inc ecx ;next descriptor cmp ecx, NUM_RX_DESC ; jne SIS900_init_rxd_Loop ; ;********* load Receive Descriptor Register with address of first ; descriptor********* mov dx, [io_addr] add dx, SIS900_rxdp mov eax, rxd out dx, eax ret ;*************************************************************************** ;* Function: sis900_set_tx_mode ;* ;* Description: ;* sets the transmit mode to allow for full duplex ;* ;* ;* Arguments: ;* ;* Returns: ;* ;* Comments: ;* If you are having problems transmitting 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 ;*************************************************************************** SIS900_set_tx_mode: mov ebp,[io_addr] lea edx,[ebp+SIS900_cr] in eax, dx ; Get current Command Register or eax, SIS900_TxENA ;Enable Receive out dx, eax lea edx,[ebp+SIS900_txcfg]; Transmit config Register offset mov eax, SIS900_ATP ;allow automatic padding or eax, SIS900_HBI ;allow heartbeat ignore or eax, SIS900_CSI ;allow carrier sense ignore or eax, 0x00600000 ;Max DMA Burst or eax, 0x00000100 ;TX Fill Threshold or eax, 0x00000020 ;TX Drain Threshold out dx, eax ret ;*************************************************************************** ;* Function: sis900_set_rx_mode ;* ;* Description: ;* sets the receive mode to accept all broadcast packets and packets ;* with our MAC address, and reject all multicast packets. Also allows ;* full-duplex ;* ;* Arguments: ;* ;* Returns: ;* ;* Comments: ;* If you are having problems 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 ;*************************************************************************** SIS900_mc_filter: times 16 dw 0 SIS900_set_rx_mode: mov ebp,[io_addr] ;**************update Multicast Hash Table in Receive Filter mov ebx, 0xffff xor cl, cl SIS900_set_rx_mode_Loop: mov eax, ecx shl eax, 1 mov [SIS900_mc_filter+eax], ebx lea edx,[ebp+SIS900_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 lea edx,[ebp+SIS900_rfdr] ; Receive Filter Control Reg offset mov eax, ebx ;entry value out dx, ax ;write value to table in card inc cl ;next entry cmp cl,[sis900_table_entries] ; jl SIS900_set_rx_mode_Loop ;*******Set Receive Filter Control Register************* lea edx,[ebp+SIS900_rfcr] ; Receive Filter Control Register offset mov eax, SIS900_RFAAB ;accecpt all broadcast packets or eax, SIS900_RFAAM ;accept all multicast packets or eax, SIS900_RFAAP ;Accept all packets or eax, SIS900_RFEN ;enable receiver filter out dx, eax ;******Enable Receiver************ lea edx,[ebp+SIS900_cr] ; Command Register offset in eax, dx ; Get current Command Register or eax, SIS900_RxENA ;Enable Receive out dx, eax ;*********Set lea edx,[ebp+SIS900_rxcfg] ; Receive Config Register offset mov eax, SIS900_ATX ;Accept Transmit Packets ; (Req for full-duplex and PMD Loopback) or eax, 0x00600000 ;Max DMA Burst or eax, 0x00000002 ;RX Drain Threshold, 8X8 bytes or 64bytes out dx, eax ; ret ;*************************************************************************** ; * SIS960_get_mac_addr: - Get MAC address for SiS962 or SiS963 model ; * @pci_dev: the sis900 pci device ; * @net_dev: the net device to get address for ; * ; * SiS962 or SiS963 model, use EEPROM to store MAC address. And 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 access ; * 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. ; * MAC address is read into @net_dev->dev_addr. ; *done ;* ;* Return 0 is EAX = failure ;*Done+ ;*************************************************************************** if defined SIS900_DEBUG SIS900_Debug_Str_GetMac_Start db 'Attempting to get SIS900 Mac ID: ',13,10,0 SIS900_Debug_Str_GetMac_Failed db 'Access to EEprom Failed',13,10,0 SIS900_Debug_Str_GetMac_Address db 'Your Mac ID is: ',0 SIS900_Debug_Str_GetMac_Address2 db 'Your SIS96x Mac ID is: ',0 end if SIS960_get_mac_addr: mov ebp,[io_addr] ;**********Send Request for eeprom access********************* lea edx,[ebp+SIS900_mear] ; Eeprom access register mov eax, SIS900_EEREQ ; Request access to eeprom out dx, eax ; Send request xor ebx,ebx ; ;******Loop 4000 times and if access not granted error out***** SIS96X_Get_Mac_Wait: in eax, dx ;get eeprom status and eax, SIS900_EEGNT ;see if eeprom access granted flag is set jnz SIS900_Got_EEP_Access ;if it is, go access the eeprom inc ebx ;else keep waiting cmp ebx, 4000 ;have we tried 4000 times yet? jl SIS96X_Get_Mac_Wait ;if not ask again xor eax, eax ;return zero in eax indicating failure ;*******Debug ********************** if defined SIS900_DEBUG mov esi,SIS900_Debug_Str_GetMac_Failed call sys_msg_board_str end if jmp SIS960_get_mac_addr_done ;**********EEprom access granted, read MAC from card************* SIS900_Got_EEP_Access: ; zero based so 3-16 bit reads will take place mov ecx, 2 SIS96x_mac_read_loop: mov eax, SIS900_EEPROMMACAddr ;Base Mac Address add eax, ecx ;Current Mac Byte Offset push ecx call sis900_read_eeprom ;try to read 16 bits pop ecx mov [node_addr+ecx*2], ax ;save 16 bits to the MAC ID varible dec ecx ;one less word to read jns SIS96x_mac_read_loop ;if more read more mov eax, 1 ;return non-zero indicating success ;*******Debug Print MAC ID to debug window********************** if defined SIS900_DEBUG mov esi,SIS900_Debug_Str_GetMac_Address2 call sys_msg_board_str mov edx, node_addr call Create_Mac_String end if ;**********Tell EEPROM We are Done Accessing It********************* SIS960_get_mac_addr_done: lea edx,[ebp+SIS900_mear] ; Eeprom access register mov eax, SIS900_EEDONE ;tell eeprom we are done out dx,eax ret ;*************************************************************************** ;* sis900_get_mac_addr: - Get MAC address for stand alone SiS900 model ;* @pci_dev: the sis900 pci device ;* @net_dev: the net device to get address for ;* ;* Older SiS900 and friends, use EEPROM to store MAC address. ;* MAC address is read from read_eeprom() into @net_dev->dev_addr. ;* done/untested ;*************************************************************************** SIS900_get_mac_addr: ;*******Debug ********************** if defined SIS900_DEBUG mov esi,SIS900_Debug_Str_GetMac_Start call sys_msg_board_str end if ;******** check to see if we have sane EEPROM ******* mov eax, SIS900_EEPROMSignature ;Base Eeprom Signature call sis900_read_eeprom ;try to read 16 bits cmp ax, 0xffff je SIS900_Bad_Eeprom cmp ax, 0 je SIS900_Bad_Eeprom ;**************Read MacID************** ; zero based so 3-16 bit reads will take place mov ecx, 2 SIS900_mac_read_loop: mov eax, SIS900_EEPROMMACAddr ;Base Mac Address add eax, ecx ;Current Mac Byte Offset push ecx call sis900_read_eeprom ;try to read 16 bits pop ecx mov [node_addr+ecx*2], ax ;save 16 bits to the MAC ID storage dec ecx ;one less word to read jns SIS900_mac_read_loop ;if more read more mov eax, 1 ;return non-zero indicating success ;*******Debug Print MAC ID to debug window********************** if defined SIS900_DEBUG mov esi,SIS900_Debug_Str_GetMac_Address call sys_msg_board_str mov edx, node_addr call Create_Mac_String end if ret SIS900_Bad_Eeprom: xor eax, eax ;*******Debug ********************** if defined SIS900_DEBUG mov esi,SIS900_Debug_Str_GetMac_Failed call sys_msg_board_str end if ret ;*************************************************************************** ;* Get_Mac_SIS635_900_REV: - Get MAC address for model 635 ;* ;* ;*************************************************************************** Get_Mac_SIS635_900_REV: if defined SIS900_DEBUG mov esi,SIS900_Debug_Str_GetMac_Start call sys_msg_board_str end if mov ebp,[io_addr] lea edx,[ebp+SIS900_rfcr] in eax,dx mov edi,eax ; EDI=rfcrSave lea edx,[ebp+SIS900_cr] or eax,SIS900_RELOAD out dx,eax xor eax,eax out dx,eax ; Disable packet filtering before setting filter lea edx,[ebp+SIS900_rfcr] mov eax,edi and edi,not SIS900_RFEN out dx,eax ; Load MAC to filter data register xor ecx,ecx mov esi,node_addr .get_mac_loop: lea edx,[ebp+SIS900_rfcr] mov eax,ecx shl eax,SIS900_RFADDR_shift out dx,eax lea edx,[ebp+SIS900_rfdr] in eax,dx mov [esi],ax add esi,2 inc ecx cmp ecx,3 jne .get_mac_loop ; Enable packet filtering ;lea edx,[ebp+SIS900_rfcr] ;mov eax,edi ;or eax,SIS900_RFEN ;out dx, eax ;*******Debug Print MAC ID to debug window********************** if defined SIS900_DEBUG mov esi,SIS900_Debug_Str_GetMac_Address call sys_msg_board_str mov edx, node_addr call Create_Mac_String end if ret ;*************************************************************************** ;* Function: sis900_read_eeprom ;* ;* Description: reads and returns a given location from EEPROM ;* ;* Arguments: eax - location: requested EEPROM location ;* ;* Returns: eax : contents of requested EEPROM location ;* ; Read Serial EEPROM through EEPROM Access Register, Note that location is ; in word (16 bits) unit */ ;done+ ;*************************************************************************** sis900_read_eeprom: push esi push edx push ecx push ebx mov ebp,[io_addr] mov ebx, eax ;location of Mac byte to read or ebx, SIS900_EEread ; lea edx,[ebp+SIS900_mear] ; Eeprom access register xor eax, eax ; start send out dx,eax call SIS900_Eeprom_Delay_1 mov eax, SIS900_EECLK out dx, eax call SIS900_Eeprom_Delay_1 ;************ Shift the read command (9) bits out. ********* mov cl, 8 ; sis900_read_eeprom_Send: mov eax, 1 shl eax, cl and eax, ebx jz SIS900_Read_Eeprom_8 mov eax, 9 jmp SIS900_Read_Eeprom_9 SIS900_Read_Eeprom_8: mov eax, 8 SIS900_Read_Eeprom_9: out dx, eax call SIS900_Eeprom_Delay_1 or eax, SIS900_EECLK out dx, eax call SIS900_Eeprom_Delay_1 cmp cl, 0 je sis900_read_eeprom_Send_Done dec cl jmp sis900_read_eeprom_Send ;********************* sis900_read_eeprom_Send_Done: mov eax, SIS900_EECS ; out dx, eax call SIS900_Eeprom_Delay_1 ;********** Read 16-bits of data in *************** mov cx, 16 ;16 bits to read sis900_read_eeprom_Send2: mov eax, SIS900_EECS out dx, eax call SIS900_Eeprom_Delay_1 or eax, SIS900_EECLK out dx, eax call SIS900_Eeprom_Delay_1 in eax, dx shl ebx, 1 and eax, SIS900_EEDO jz SIS900_Read_Eeprom_0 or ebx, 1 SIS900_Read_Eeprom_0: dec cx jnz sis900_read_eeprom_Send2 ;************** Terminate the EEPROM access. ************** xor eax, eax out dx, eax call SIS900_Eeprom_Delay_1 mov eax, SIS900_EECLK out dx, eax mov eax, ebx and eax, 0x0000ffff ;return only 16 bits pop ebx pop ecx pop edx pop esi ret ;*************************************************************************** ; Function ; SIS900_Eeprom_Delay_1 ; Description ; ; ; ; ;*************************************************************************** SIS900_Eeprom_Delay_1: push eax in eax, dx pop eax ret ;*************************************************************************** ; Function ; SIS900_poll ; Description ; polls card to see if there is a packet waiting ; ; Currently only supports one descriptor per packet, if packet is fragmented ; between multiple descriptors you will lose part of the packet ;*************************************************************************** if defined SIS900_DEBUG SIS900_Debug_Pull_Packet_good db 'Good Packet Waiting: ',13,10,0 SIS900_Debug_Pull_Bad_Packet_Status db 'Bad Packet Waiting: Status',13,10,0 SIS900_Debug_Pull_Bad_Packet_Size db 'Bad Packet Waiting: Size',13,10,0 end if SIS900_poll: ;**************Get Status ************** xor eax, eax ;get RX_Status mov [eth_rx_data_len], ax mov al, [cur_rx] ;find current discriptor imul eax, 12 ; mov ecx, [rxd+eax+4] ; get receive status ;**************Check Status ************** mov ebx, ecx ;move status ;Check RX_Status to see if packet is waiting and ebx, 0x80000000 jnz SIS900_poll_IS_packet ret ;**********There is a packet waiting check it for errors************** SIS900_poll_IS_packet: mov ebx, ecx ;move status and ebx, 0x67C0000 ;see if there are any errors jnz SIS900_Poll_Error_Status ;**************Check size of packet************* and ecx, SIS900_DSIZE ;get packet size minus CRC cmp cx, SIS900_CRC_SIZE ;make sure packet contains data jle SIS900_Poll_Error_Size ;*******Copy Good Packet to receive buffer****** sub cx, SIS900_CRC_SIZE ;dont want crc mov word [eth_rx_data_len], cx ;save size of packet ;**********Continue copying packet**************** push ecx ; first copy dword-wise, divide size by 4 shr ecx, 2 mov esi, [rxd+eax+8] ; set source mov edi, Ether_buffer ; set destination cld ; clear direction rep movsd ; copy the dwords pop ecx and ecx, 3 ; rep movsb ;********Debug, tell user we have a good packet************* if defined SIS900_DEBUG mov esi, SIS900_Debug_Pull_Packet_good call sys_msg_board_str end if jmp SIS900_Poll_Cnt ; ;*************Error occured let user know through debug window*********** SIS900_Poll_Error_Status: if defined SIS900_DEBUG mov esi, SIS900_Debug_Pull_Bad_Packet_Status call sys_msg_board_str end if jmp SIS900_Poll_Cnt SIS900_Poll_Error_Size: if defined SIS900_DEBUG mov esi, SIS900_Debug_Pull_Bad_Packet_Size call sys_msg_board_str end if ;*************Increment to next available descriptor************** SIS900_Poll_Cnt: ;Reset status, allow ethernet card access to descriptor mov ecx, RX_BUFF_SZ mov [rxd+eax+4], ecx ; inc [cur_rx] ;get next descriptor and [cur_rx],3 ;only 4 descriptors 0-3 ;******Enable Receiver************ mov ebp, [io_addr] ; Base Address lea edx,[ebp+SIS900_cr] ; Command Register offset in eax, dx ; Get current Command Register or eax, SIS900_RxENA ;Enable Receive out dx, eax ret ;*************************************************************************** ; Function ; SIS900_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 ; ; only one transmit descriptor is used ; ;*************************************************************************** if defined SIS900_DEBUG SIS900_Debug_Transmit_Packet db 'Transmitting Packet: ',13,10,0 SIS900_Debug_Transmit_Packet_Err db 'Transmitting Packet Error: ',13,10,0 end if SIS900_transmit: mov ebp, [io_addr] ; Base Address ;******** Stop the transmitter ******** lea edx,[ebp+SIS900_cr] ; Command Register offset in eax, dx ; Get current Command Register or eax, SIS900_TxDIS ; Disable Transmitter out dx, eax ;*******load Transmit Descriptor Register ******* lea edx,[ebp+SIS900_txdp] mov eax, txd out dx, eax ;******* copy packet to descriptor******* push esi mov esi, edi ;copy destination addess mov edi, txb cld movsd movsw mov esi, node_addr ;copy my mac address movsd movsw mov [edi], bx ;copy packet type add edi, 2 pop esi ;restore pointer to source of packet push ecx ;save packet size shr ecx, 2 ;divide by 4, size in bytes send in dwords rep movsd ;copy data to decriptor pop ecx ;restore packet size push ecx ;save packet size and ecx, 3 ;last three bytes if not a multiple of 4 rep movsb ;**************set length tag************** pop ecx ;restore packet size add ecx, SIS900_ETH_HLEN ;add header to length and ecx, SIS900_DSIZE ; ;**************pad to minimum packet size **************not needed ;cmp ecx, SIS900_ETH_ZLEN ;jge SIS900_transmit_Size_Ok ;push ecx ;mov ebx, SIS900_ETH_ZLEN ;sub ebx, ecx ;mov ecx, ebx ;rep movsb ;pop ecx SIS900_transmit_Size_Ok: mov [txd+4], dword 0x80000000 ;card owns descriptor or [txd+4], ecx ;set size of packet if defined SIS900_DEBUG mov esi, SIS900_Debug_Transmit_Packet call sys_msg_board_str end if ;***************restart the transmitter ******** lea edx,[ebp+SIS900_cr] in eax, dx ; Get current Command Register or eax, SIS900_TxENA ; Enable Transmitter out dx, eax ;****make sure packet transmitted successfully**** ; mov esi,10 ; call delay_ms mov eax, [txd+4] and eax, 0x6200000 jz SIS900_transmit_OK ;**************Tell user there was an error through debug window if defined SIS900_DEBUG mov esi, SIS900_Debug_Transmit_Packet_Err call sys_msg_board_str end if SIS900_transmit_OK: ;******** Disable interrupts by clearing the interrupt mask. ******** lea edx,[ebp+SIS900_imr] ; Interupt Mask Register xor eax, eax out dx,eax ret ;*************************************************************************** ;* Function: Create_Mac_String ;* ;* Description: Converts the 48 bit value to a string for display ;* ;* String Format: XX:XX:XX:XX:XX:XX ;* ;* Arguments: node_addr is location of 48 bit MAC ID ;* ;* Returns: Prints string to general debug window ;* ;* ;done ;*************************************************************************** if defined SIS900_DEBUG SIS900_Char_String db '0','1','2','3','4','5','6','7','8','9' db 'A','B','C','D','E','F' Mac_str_build: times 20 db 0 Create_Mac_String: pusha xor ecx, ecx Create_Mac_String_loop: mov al,byte [edx+ecx];[node_addr+ecx] push eax shr eax, 4 and eax, 0x0f mov bl, byte [SIS900_Char_String+eax] mov [Mac_str_build+ecx*3], bl pop eax and eax, 0x0f mov bl, byte [SIS900_Char_String+eax] mov [Mac_str_build+1+ecx*3], bl cmp ecx, 5 je Create_Mac_String_done mov bl, ':' mov [Mac_str_build+2+ecx*3], bl inc ecx jmp Create_Mac_String_loop Create_Mac_String_done: ;Insert CR and Zero Terminate mov [Mac_str_build+2+ecx*3],byte 13 mov [Mac_str_build+3+ecx*3],byte 10 mov [Mac_str_build+4+ecx*3],byte 0 mov esi, Mac_str_build call sys_msg_board_str ;Print String to message board popa ret end if ;*************************************************************************** ;* Set device to be a busmaster in case BIOS neglected to do so. ;* Also adjust PCI latency timer to a reasonable value, 64. ;*************************************************************************** SIS900_adjust_pci_device: ;*******Get current setting************************ mov al, 2 ;read a word mov bh, [pci_dev] mov ah, [pci_bus] mov bl, 0x04 ;from command Register call pci_read_reg ;******see if its already set as bus master******** mov bx, ax and bx,5 cmp bx,5 je SIS900_adjust_pci_device_Latency ;******Make card a bus master******* mov cx, ax ;value to write mov bh, [pci_dev] mov al, 2 ;write a word or cx,5 mov ah, [pci_bus] mov bl, 0x04 ;to command register call pci_write_reg ;******Check latency setting*********** SIS900_adjust_pci_device_Latency: ;*******Get current latency setting************************ mov al, 1 ;read a byte mov bh, [pci_dev] mov ah, [pci_bus] mov bl, 0x0D ;from Lantency Timer Register call pci_read_reg ;******see if its aat least 64 clocks******** cmp ax,64 jge SIS900_adjust_pci_device_Done ;******Set latency to 32 clocks******* mov cx, 64 ;value to write mov bh, [pci_dev] mov al, 1 ;write a byte mov ah, [pci_bus] mov bl, 0x0D ;to Lantency Timer Register call pci_write_reg ;******Check latency setting*********** SIS900_adjust_pci_device_Done: ret