1149 lines
46 KiB
PHP
1149 lines
46 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; SIS900.INC ;;
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;; ;;
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;; Ethernet driver for Menuet OS ;;
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;; ;;
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;; Version 0.4 26 April 2004 ;;
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;; ;;
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;; This driver is based on the SIS900 driver from ;;
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;; the etherboot 5.0.6 project. The copyright statement is ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;; remaining parts Copyright 2004 Jason Delozier, ;;
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;; cordata51@hotmail.com ;;
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;; ;;
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;; See file COPYING for details ;;
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;; ;;
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;; Updates: ;;
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;; Revision Look up table and SIS635 Mac Address by Jarek Pelczar ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;********************************************************************
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; Interface
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; SIS900_reset
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; SIS900_probe
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; SIS900_poll
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; SIS900_transmit
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;
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;********************************************************************
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;********************************************************************
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; Comments:
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; Known to work with the following SIS900 ethernet cards:
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; - Device ID: 0x0900 Vendor ID: 0x1039 Revision: 0x91
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; - Device ID: 0x0900 Vendor ID: 0x1039 Revision: 0x90
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;
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; If your card is not listed, try it and let me know if it
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; functions properly and it will be aded to the list. If not
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; we may be able to add support for it.
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;
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; How To Use:
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; Add the following lines to Ethernet.inc in their appropriate locations
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;
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; include "Sis900.INC"
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; dd 0x09001039, SIS900_probe, SIS900_reset, SIS900_poll,
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; SIS900_transmit
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; dd 0x70161039, SIS900_probe, SIS900_reset, SIS900_poll,
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; SIS900_transmit ;untested
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;
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; ToDo:
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; - Enable MII interface for reading speed
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; and duplex settings.
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;
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; - Update Poll routine to support packet fragmentation.
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;
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; - Add additional support for other sis900 based cards
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;
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;********************************************************************
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; comment the next line out if you don't want debug info printed
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; on the debug board. This option adds a lot of bytes to the driver
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; so it's worth to comment it out.
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; SIS900_DEBUG equ 1
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;* buffers and descriptors
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cur_rx db 0
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NUM_RX_DESC equ 4 ;* Number of RX descriptors *
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NUM_TX_DESC equ 1 ;* Number of TX descriptors *
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RX_BUFF_SZ equ 1520 ;* Buffer size for each Rx buffer *
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TX_BUFF_SZ equ 1516 ;* Buffer size for each Tx buffer *
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uglobal
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align 4
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txd: times (3 * NUM_TX_DESC) dd 0
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rxd: times (3 * NUM_RX_DESC) dd 0
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endg
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txb equ eth_data_start
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rxb equ txb + (NUM_TX_DESC * TX_BUFF_SZ)
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SIS900_ETH_ALEN equ 6 ;* Size of Ethernet address *
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SIS900_ETH_HLEN equ 14 ;* Size of ethernet header *
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SIS900_ETH_ZLEN equ 60 ;* Minimum packet length *
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SIS900_DSIZE equ 0x00000fff
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SIS900_CRC_SIZE equ 4
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SIS900_RFADDR_shift equ 16
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;SIS900 Symbolic offsets to registers.
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SIS900_cr equ 0x0 ; Command Register
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SIS900_cfg equ 0x4 ; Configuration Register
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SIS900_mear equ 0x8 ; EEPROM Access Register
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SIS900_ptscr equ 0xc ; PCI Test Control Register
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SIS900_isr equ 0x10 ; Interrupt Status Register
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SIS900_imr equ 0x14 ; Interrupt Mask Register
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SIS900_ier equ 0x18 ; Interrupt Enable Register
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SIS900_epar equ 0x18 ; Enhanced PHY Access Register
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SIS900_txdp equ 0x20 ; Transmit Descriptor Pointer Register
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SIS900_txcfg equ 0x24 ; Transmit Configuration Register
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SIS900_rxdp equ 0x30 ; Receive Descriptor Pointer Register
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SIS900_rxcfg equ 0x34 ; Receive Configuration Register
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SIS900_flctrl equ 0x38 ; Flow Control Register
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SIS900_rxlen equ 0x3c ; Receive Packet Length Register
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SIS900_rfcr equ 0x48 ; Receive Filter Control Register
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SIS900_rfdr equ 0x4C ; Receive Filter Data Register
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SIS900_pmctrl equ 0xB0 ; Power Management Control Register
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SIS900_pmer equ 0xB4 ; Power Management Wake-up Event Register
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;SIS900 Command Register Bits
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SIS900_RELOAD equ 0x00000400
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SIS900_ACCESSMODE equ 0x00000200
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SIS900_RESET equ 0x00000100
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SIS900_SWI equ 0x00000080
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SIS900_RxRESET equ 0x00000020
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SIS900_TxRESET equ 0x00000010
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SIS900_RxDIS equ 0x00000008
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SIS900_RxENA equ 0x00000004
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SIS900_TxDIS equ 0x00000002
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SIS900_TxENA equ 0x00000001
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;SIS900 Configuration Register Bits
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SIS900_DESCRFMT equ 0x00000100 ; 7016 specific
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SIS900_REQALG equ 0x00000080
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SIS900_SB equ 0x00000040
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SIS900_POW equ 0x00000020
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SIS900_EXD equ 0x00000010
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SIS900_PESEL equ 0x00000008
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SIS900_LPM equ 0x00000004
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SIS900_BEM equ 0x00000001
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SIS900_RND_CNT equ 0x00000400
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SIS900_FAIR_BACKOFF equ 0x00000200
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SIS900_EDB_MASTER_EN equ 0x00002000
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;SIS900 Eeprom Access Reigster Bits
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SIS900_MDC equ 0x00000040
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SIS900_MDDIR equ 0x00000020
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SIS900_MDIO equ 0x00000010 ; 7016 specific
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SIS900_EECS equ 0x00000008
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SIS900_EECLK equ 0x00000004
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SIS900_EEDO equ 0x00000002
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SIS900_EEDI equ 0x00000001
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;SIS900 TX Configuration Register Bits
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SIS900_ATP equ 0x10000000 ;Automatic Transmit Padding
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SIS900_MLB equ 0x20000000 ;Mac Loopback Enable
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SIS900_HBI equ 0x40000000 ;HeartBeat Ignore (Req for full-dup)
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SIS900_CSI equ 0x80000000 ;CarrierSenseIgnore (Req for full-du
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;SIS900 RX Configuration Register Bits
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SIS900_AJAB equ 0x08000000 ;
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SIS900_ATX equ 0x10000000 ;Accept Transmit Packets
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SIS900_ARP equ 0x40000000 ;accept runt packets (<64bytes)
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SIS900_AEP equ 0x80000000 ;accept error packets
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;SIS900 Interrupt Reigster Bits
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SIS900_WKEVT equ 0x10000000
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SIS900_TxPAUSEEND equ 0x08000000
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SIS900_TxPAUSE equ 0x04000000
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SIS900_TxRCMP equ 0x02000000
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SIS900_RxRCMP equ 0x01000000
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SIS900_DPERR equ 0x00800000
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SIS900_SSERR equ 0x00400000
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SIS900_RMABT equ 0x00200000
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SIS900_RTABT equ 0x00100000
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SIS900_RxSOVR equ 0x00010000
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SIS900_HIBERR equ 0x00008000
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SIS900_SWINT equ 0x00001000
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SIS900_MIBINT equ 0x00000800
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SIS900_TxURN equ 0x00000400
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SIS900_TxIDLE equ 0x00000200
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SIS900_TxERR equ 0x00000100
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SIS900_TxDESC equ 0x00000080
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SIS900_TxOK equ 0x00000040
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SIS900_RxORN equ 0x00000020
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SIS900_RxIDLE equ 0x00000010
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SIS900_RxEARLY equ 0x00000008
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SIS900_RxERR equ 0x00000004
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SIS900_RxDESC equ 0x00000002
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SIS900_RxOK equ 0x00000001
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;SIS900 Interrupt Enable Reigster Bits
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SIS900_IE equ 0x00000001
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;SIS900 Revision ID
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SIS900B_900_REV equ 0x03
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SIS630A_900_REV equ 0x80
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SIS630E_900_REV equ 0x81
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SIS630S_900_REV equ 0x82
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SIS630EA1_900_REV equ 0x83
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SIS630ET_900_REV equ 0x84
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SIS635A_900_REV equ 0x90
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SIS900_960_REV equ 0x91
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;SIS900 Receive Filter Control Register Bits
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SIS900_RFEN equ 0x80000000
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SIS900_RFAAB equ 0x40000000
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SIS900_RFAAM equ 0x20000000
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SIS900_RFAAP equ 0x10000000
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SIS900_RFPromiscuous equ 0x70000000
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;SIS900 Reveive Filter Data Mask
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SIS900_RFDAT equ 0x0000FFFF
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;SIS900 Eeprom Address
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SIS900_EEPROMSignature equ 0x00
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SIS900_EEPROMVendorID equ 0x02
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SIS900_EEPROMDeviceID equ 0x03
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SIS900_EEPROMMACAddr equ 0x08
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SIS900_EEPROMChecksum equ 0x0b
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;The EEPROM commands include the alway-set leading bit.
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;SIS900 Eeprom Command
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SIS900_EEread equ 0x0180
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SIS900_EEwrite equ 0x0140
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SIS900_EEerase equ 0x01C0
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SIS900_EEwriteEnable equ 0x0130
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SIS900_EEwriteDisable equ 0x0100
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SIS900_EEeraseAll equ 0x0120
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SIS900_EEwriteAll equ 0x0110
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SIS900_EEaddrMask equ 0x013F
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SIS900_EEcmdShift equ 16
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;For SiS962 or SiS963, request the eeprom software access
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SIS900_EEREQ equ 0x00000400
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SIS900_EEDONE equ 0x00000200
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SIS900_EEGNT equ 0x00000100
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;General Varibles
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SIS900_pci_revision: db 0
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SIS900_Status dd 0x03000000
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sis900_specific_table:
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; dd SIS630A_900_REV,Get_Mac_SIS630A_900_REV,0
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; dd SIS630E_900_REV,Get_Mac_SIS630E_900_REV,0
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dd SIS630S_900_REV,Get_Mac_SIS635_900_REV,0
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dd SIS630EA1_900_REV,Get_Mac_SIS635_900_REV,0
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dd SIS630ET_900_REV,Get_Mac_SIS635_900_REV,0;SIS630ET_900_REV_SpecialFN
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dd SIS635A_900_REV,Get_Mac_SIS635_900_REV,0
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dd SIS900_960_REV,SIS960_get_mac_addr,0
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dd SIS900B_900_REV,SIS900_get_mac_addr,0
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dd 0,0,0,0 ; end of list
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sis900_get_mac_func: dd 0
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sis900_special_func: dd 0
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sis900_table_entries: db 8
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;***************************************************************************
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; Function
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; SIS900_probe
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; Description
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; Searches for an ethernet card, enables it and clears the rx buffer
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; If a card was found, it enables the ethernet -> TCPIP link
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;not done - still need to probe mii transcievers
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;***************************************************************************
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if defined SIS900_DEBUG
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SIS900_Debug_Str_Unsupported db 'Sorry your card is unsupported ',13,10,0
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end if
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SIS900_probe:
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;******Wake Up Chip*******
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mov al, 4
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mov bh, [pci_dev]
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mov ecx, 0
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mov ah, [pci_bus]
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mov bl, 0x40
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call pci_write_reg
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;*******Set some PCI Settings*********
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call SIS900_adjust_pci_device
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;*****Get Card Revision******
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mov al, 1 ;one byte to read
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mov bh, [pci_dev]
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mov ah, [pci_bus]
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mov bl, 0x08 ;Revision Register
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call pci_read_reg
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mov [SIS900_pci_revision], al ;save the revision for later use
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;****** Look up through the sis900_specific_table
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mov esi,sis900_specific_table
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.probe_loop:
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cmp dword [esi],0 ; Check if we reached end of the list
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je .probe_loop_failed
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cmp al,[esi] ; Check if revision is OK
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je .probe_loop_ok
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add esi,12 ; Advance to next entry
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jmp .probe_loop
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.probe_loop_failed:
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jmp SIS900_Probe_Unsupported
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;*********Find Get Mac Function*********
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.probe_loop_ok:
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mov eax,[esi+4] ; Get pointer to "get MAC" function
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mov [sis900_get_mac_func],eax
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mov eax,[esi+8] ; Get pointer to special initialization fn
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mov [sis900_special_func],eax
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;******** Get MAC ********
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call dword [sis900_get_mac_func]
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;******** Call special initialization fn if requested ********
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cmp dword [sis900_special_func],0
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je .no_special_init
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call dword [sis900_special_func]
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.no_special_init:
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;******** Set table entries ********
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mov al,[SIS900_pci_revision]
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cmp al,SIS635A_900_REV
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jae .ent16
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cmp al,SIS900B_900_REV
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je .ent16
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jmp .ent8
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.ent16:
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mov byte [sis900_table_entries],16
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.ent8:
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;*******Probe for mii transceiver*******
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;TODO!!*********************
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;*******Initialize Device*******
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call sis900_init
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ret
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SIS900_Probe_Unsupported:
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if defined SIS900_DEBUG
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mov esi, SIS900_Debug_Str_Unsupported
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call sys_msg_board_str
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end if
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ret
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;***************************************************************************
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; Function: sis900_init
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;
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; Description: resets the ethernet controller chip and various
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; data structures required for sending and receiving packets.
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;
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; Arguments:
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;
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; returns: none
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;not done
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;***************************************************************************
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sis900_init:
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call SIS900_reset ;Done
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call SIS900_init_rxfilter ;Done
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call SIS900_init_txd ;Done
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call SIS900_init_rxd ;Done
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call SIS900_set_rx_mode ;done
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call SIS900_set_tx_mode
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;call SIS900_check_mode
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ret
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;***************************************************************************
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; Function
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; SIS900_reset
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; Description
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; disables interrupts and soft resets the controller chip
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;
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;done+
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;***************************************************************************
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if defined SIS900_DEBUG
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SIS900_Debug_Reset_Failed db 'Reset Failed ',0
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end if
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SIS900_reset:
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;******Disable Interrupts and reset Receive Filter*******
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mov ebp, [io_addr] ; base address
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xor eax, eax ; 0 to initialize
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lea edx,[ebp+SIS900_ier]
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out dx, eax ; Write 0 to location
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lea edx,[ebp+SIS900_imr]
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out dx, eax ; Write 0 to location
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lea edx,[ebp+SIS900_rfcr]
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out dx, eax ; Write 0 to location
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;*******Reset Card***********************************************
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lea edx,[ebp+SIS900_cr]
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in eax, dx ; Get current Command Register
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or eax, SIS900_RESET ; set flags
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or eax, SIS900_RxRESET ;
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or eax, SIS900_TxRESET ;
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out dx, eax ; Write new Command Register
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;*******Wait Loop************************************************
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lea edx,[ebp+SIS900_isr]
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mov ecx, [SIS900_Status] ; Status we would like to see from card
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mov ebx, 2001 ; only loop 1000 times
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SIS900_Wait:
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dec ebx ; 1 less loop
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jz SIS900_DoneWait_e ; 1000 times yet?
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in eax, dx ; move interrup status to eax
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and eax, ecx
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xor ecx, eax
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jz SIS900_DoneWait
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jmp SIS900_Wait
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SIS900_DoneWait_e:
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if defined SIS900_DEBUG
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mov esi, SIS900_Debug_Reset_Failed
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call sys_msg_board_str
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end if
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SIS900_DoneWait:
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;*******Set Configuration Register depending on Card Revision********
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lea edx,[ebp+SIS900_cfg]
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mov eax, SIS900_PESEL ; Configuration Register Bit
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mov bl, [SIS900_pci_revision] ; card revision
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mov cl, SIS635A_900_REV ; Check card revision
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cmp bl, cl
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je SIS900_RevMatch
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mov cl, SIS900B_900_REV ; Check card revision
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cmp bl, cl
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je SIS900_RevMatch
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out dx, eax ; no revision match
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jmp SIS900_Reset_Complete
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SIS900_RevMatch: ; Revision match
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or eax, SIS900_RND_CNT ; Configuration Register Bit
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out dx, eax
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SIS900_Reset_Complete:
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mov eax, [pci_data]
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mov [eth_status], eax
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ret
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;***************************************************************************
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; Function: sis_init_rxfilter
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;
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; Description: sets receive filter address to our MAC address
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;
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; Arguments:
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;
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; returns:
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;done+
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;***************************************************************************
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SIS900_init_rxfilter:
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;****Get Receive Filter Control Register ********
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mov ebp, [io_addr] ; base address
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lea edx,[ebp+SIS900_rfcr]
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in eax, dx ; get register
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push eax
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;****disable packet filtering before setting filter*******
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mov eax, SIS900_RFEN ;move receive filter enable flag
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not eax ;1s complement
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pop ebx ;and with our saved register
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and eax, ebx ;disable receiver
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push ebx ;save filter for another use
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out dx, eax ;set receive disabled
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;********load MAC addr to filter data register*********
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xor ecx, ecx
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SIS900_RXINT_Mac_Write:
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;high word of eax tells card which mac byte to write
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mov eax, ecx
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lea edx,[ebp+SIS900_rfcr]
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shl eax, 16 ;
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out dx, eax ;
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lea edx,[ebp+SIS900_rfdr]
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mov ax, word [node_addr+ecx*2] ; Get Mac ID word
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out dx, ax ; Send Mac ID
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inc cl ; send next word
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cmp cl, 3 ; more to send?
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jne SIS900_RXINT_Mac_Write
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;********enable packet filitering *****
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pop eax ;old register value
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lea edx,[ebp+SIS900_rfcr]
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or eax, SIS900_RFEN ;enable filtering
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out dx, eax ;set register
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ret
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;***************************************************************************
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;*
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;* Function: sis_init_txd
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;*
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;* Description: initializes the Tx descriptor
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;*
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;* Arguments:
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;*
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;* returns:
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;*done
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;***************************************************************************
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SIS900_init_txd:
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;********** initialize TX descriptor **************
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mov [txd], dword 0 ;put link to next descriptor in link field
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mov [txd+4],dword 0 ;clear status field
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mov [txd+8], dword txb ;save address to buffer ptr field
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;*************** load Transmit Descriptor Register ***************
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mov dx, [io_addr] ; base address
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add dx, SIS900_txdp ; TX Descriptor Pointer
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mov eax, txd ; First Descriptor
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out dx, eax ; move the pointer
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ret
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;***************************************************************************
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;* Function: sis_init_rxd
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;*
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;* Description: initializes the Rx descriptor ring
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;*
|
|
;* 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
|