forked from KolibriOS/kolibrios
960 lines
22 KiB
PHP
960 lines
22 KiB
PHP
$Revision$
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; RTL8029.INC ;;
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;; ;;
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;; Ethernet driver for Menuet OS ;;
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;; ;;
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;; Version 0.2 31 July 2002 ;;
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;; ;;
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;; This driver is based on the ns8390 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 2002 Mike Hibbett, ;;
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;; mikeh@oceanfree.net ;;
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;; ;;
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;; See file COPYING for details ;;
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;; ;;
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;; While this implementation handles only PCI bus RTL8029 ;;
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;; hardware, it can be easily adapted to other NE2000 clone ;;
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;; products. I just dont have any to try! ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;********************************************************************
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; Interface
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; rtl8029_reset
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; rtl8029_probe
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; rtl8029_poll
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; rtl8029_transmit
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;
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;********************************************************************
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;**************************************************************************
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; 8390 Register Definitions
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;**************************************************************************
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D8390_P0_COMMAND equ 0x00
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D8390_P0_PSTART equ 0x01
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D8390_P0_PSTOP equ 0x02
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D8390_P0_BOUND equ 0x03
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D8390_P0_TSR equ 0x04
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D8390_P0_TPSR equ 0x04
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D8390_P0_TBCR0 equ 0x05
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D8390_P0_TBCR1 equ 0x06
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D8390_P0_ISR equ 0x07
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D8390_P0_RSAR0 equ 0x08
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D8390_P0_RSAR1 equ 0x09
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D8390_P0_RBCR0 equ 0x0A
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D8390_P0_RBCR1 equ 0x0B
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D8390_P0_RSR equ 0x0C
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D8390_P0_RCR equ 0x0C
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D8390_P0_TCR equ 0x0D
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D8390_P0_DCR equ 0x0E
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D8390_P0_IMR equ 0x0F
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D8390_P1_COMMAND equ 0x00
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D8390_P1_PAR0 equ 0x01
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D8390_P1_PAR1 equ 0x02
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D8390_P1_PAR2 equ 0x03
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D8390_P1_PAR3 equ 0x04
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D8390_P1_PAR4 equ 0x05
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D8390_P1_PAR5 equ 0x06
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D8390_P1_CURR equ 0x07
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D8390_P1_MAR0 equ 0x08
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D8390_COMMAND_PS0 equ 0x0 ; Page 0 select
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D8390_COMMAND_PS1 equ 0x40 ; Page 1 select
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D8390_COMMAND_PS2 equ 0x80 ; Page 2 select
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D8390_COMMAND_RD2 equ 0x20 ; Remote DMA control
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D8390_COMMAND_RD1 equ 0x10
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D8390_COMMAND_RD0 equ 0x08
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D8390_COMMAND_TXP equ 0x04 ; transmit packet
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D8390_COMMAND_STA equ 0x02 ; start
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D8390_COMMAND_STP equ 0x01 ; stop
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D8390_COMMAND_RD2_STA equ 0x22
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D8390_COMMAND_RD2_STP equ 0x21
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D8390_COMMAND_RD1_STA equ 0x12
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D8390_COMMAND_RD0_STA equ 0x0A
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D8390_COMMAND_PS0_RD2_STP equ 0x21
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D8390_COMMAND_PS1_RD2_STP equ 0x61
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D8390_COMMAND_PS0_RD2_STA equ 0x22
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D8390_COMMAND_PS0_TXP_RD2_STA equ 0x26
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D8390_RCR_MON equ 0x20 ; monitor mode
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D8390_DCR_FT1 equ 0x40
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D8390_DCR_LS equ 0x08 ; Loopback select
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D8390_DCR_WTS equ 0x01 ; Word transfer select
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D8390_DCR_FT1_LS equ 0x48
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D8390_DCR_WTS_FT1_LS equ 0x49
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D8390_ISR_PRX equ 0x01 ; successful recv
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D8390_ISR_PTX equ 0x02 ; successful xmit
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D8390_ISR_RXE equ 0x04 ; receive error
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D8390_ISR_TXE equ 0x08 ; transmit error
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D8390_ISR_OVW equ 0x10 ; Overflow
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D8390_ISR_CNT equ 0x20 ; Counter overflow
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D8390_ISR_RDC equ 0x40 ; Remote DMA complete
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D8390_ISR_RST equ 0x80 ; reset
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D8390_RSTAT_PRX equ 0x01 ; successful recv
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D8390_RSTAT_CRC equ 0x02 ; CRC error
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D8390_RSTAT_FAE equ 0x04 ; Frame alignment error
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D8390_RSTAT_OVER equ 0x08 ; FIFO overrun
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D8390_TXBUF_SIZE equ 6
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D8390_RXBUF_END equ 32
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D8390_PAGE_SIZE equ 256
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ETH_ALEN equ 6
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ETH_HLEN equ 14
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ETH_ZLEN equ 60
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ETH_FRAME_LEN equ 1514
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FLAG_PIO equ 0x01
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FLAG_16BIT equ 0x02
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ASIC_PIO equ 0
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VENDOR_NONE equ 0
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VENDOR_WD equ 1
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VENDOR_NOVELL equ 2
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VENDOR_3COM equ 3
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NE_ASIC_OFFSET equ 0x10
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NE_RESET equ 0x0F ; Used to reset card
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NE_DATA equ 0x00 ; Used to read/write NIC mem
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MEM_8192 equ 32
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MEM_16384 equ 64
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MEM_32768 equ 128
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ISA_MAX_ADDR equ 0x400
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uglobal
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eth_flags: db 0
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eth_vendor: db 0
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eth_nic_base: dw 0
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eth_asic_base: dw 0
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eth_memsize: db 0
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eth_rx_start: db 0
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eth_tx_start: db 0
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eth_bmem: dd 0
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eth_rmem: dd 0
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romdata: db 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
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endg
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iglobal
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test_data: db 'NE*000 memory',0
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test_buffer: db ' ',0
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endg
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uglobal
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eth_type: dw 0
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pkthdr: db 0,0,0,0 ; status, next, (short) len
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pktoff: dw 0
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eth_rx_data_ptr: dd 0
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eth_tmp_len: dw 0
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endg
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;***************************************************************************
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; Function
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; eth_pio_read
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;
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; Description
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; Read a frame from the ethernet card via Programmed I/O
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; src in ebx
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; cnt in ecx
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; dst in edi
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;***************************************************************************
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eth_pio_read:
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mov al, [eth_flags]
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and al, FLAG_16BIT
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cmp al, 0
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je epr_001
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inc ecx
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and ecx, 0xFFFFFFFE
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epr_001:
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mov al, D8390_COMMAND_RD2_STA
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mov dx, [eth_nic_base]
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add dx, D8390_P0_COMMAND
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out dx, al
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mov al, cl
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mov dx, [eth_nic_base]
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add dx, D8390_P0_RBCR0
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out dx, al
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mov al, ch
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mov dx, [eth_nic_base]
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add dx, D8390_P0_RBCR1
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out dx, al
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mov al, bl
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mov dx, [eth_nic_base]
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add dx, D8390_P0_RSAR0
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out dx, al
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mov al, bh
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mov dx, [eth_nic_base]
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add dx, D8390_P0_RSAR1
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out dx, al
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mov al, D8390_COMMAND_RD0_STA
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mov dx, [eth_nic_base]
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add dx, D8390_P0_COMMAND
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out dx, al
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mov dx, [eth_asic_base]
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add dx, ASIC_PIO
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mov al, [eth_flags]
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and al, FLAG_16BIT
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cmp al, 0
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je epr_003
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shr ecx, 1
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epr_002:
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; 2 bytes at a time
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in ax, dx
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mov [edi], ax
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add edi, 2
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loop epr_002
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ret
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epr_003:
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; 1 byte at a time
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in al, dx
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mov [edi], al
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inc edi
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loop epr_003
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ret
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;***************************************************************************
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; Function
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; eth_pio_write
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;
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; Description
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; writes a frame to the ethernet card via Programmed I/O
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; dst in ebx
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; cnt in ecx
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; src in esi
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;***************************************************************************
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eth_pio_write:
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mov al, [eth_flags]
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and al, FLAG_16BIT
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cmp al, 0
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je epw_001
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inc ecx
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and ecx, 0xFFFFFFFE
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epw_001:
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mov al, D8390_COMMAND_RD2_STA
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mov dx, [eth_nic_base]
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add dx, D8390_P0_COMMAND
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out dx, al
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mov al, D8390_ISR_RDC
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mov dx, [eth_nic_base]
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add dx, D8390_P0_ISR
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out dx, al
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mov al, cl
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mov dx, [eth_nic_base]
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add dx, D8390_P0_RBCR0
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out dx, al
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mov al, ch
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mov dx, [eth_nic_base]
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add dx, D8390_P0_RBCR1
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out dx, al
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mov al, bl
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mov dx, [eth_nic_base]
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add dx, D8390_P0_RSAR0
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out dx, al
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mov al, bh
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mov dx, [eth_nic_base]
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add dx, D8390_P0_RSAR1
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out dx, al
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mov al, D8390_COMMAND_RD1_STA
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mov dx, [eth_nic_base]
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add dx, D8390_P0_COMMAND
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out dx, al
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mov dx, [eth_asic_base]
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add dx, ASIC_PIO
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mov al, [eth_flags]
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and al, FLAG_16BIT
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cmp al, 0
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je epw_003
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shr ecx, 1
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epw_002:
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; 2 bytes at a time
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mov ax, [esi]
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add esi, 2
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out dx, ax
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loop epw_002
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jmp epw_004
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epw_003:
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; 1 byte at a time
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mov al, [esi]
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inc esi
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out dx, al
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loop epw_003
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epw_004:
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mov dx, [eth_nic_base]
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add dx, D8390_P0_ISR
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epw_005:
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in al, dx
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and al, D8390_ISR_RDC
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cmp al, D8390_ISR_RDC
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jne epw_005
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ret
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;***************************************************************************
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; Function
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; rtl8029_reset
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; Description
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; Place the chip (ie, the ethernet card) into a virgin state
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; No inputs
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; All registers destroyed
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;
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;***************************************************************************
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rtl8029_reset:
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mov bx, [eth_nic_base]
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mov dx, bx
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add dx, D8390_P0_COMMAND
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mov al, D8390_COMMAND_PS0_RD2_STP
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out dx, al
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mov dx, bx
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add dx, D8390_P0_DCR
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mov al, [eth_flags]
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and al, FLAG_16BIT
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cmp al, FLAG_16BIT
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jne nsr_001
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mov al, 0x49
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jmp nsr_002
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nsr_001:
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mov al, 0x48
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nsr_002:
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out dx, al
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xor al, al
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mov dx, bx
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add dx, D8390_P0_RBCR0
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out dx, al
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mov dx, bx
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add dx, D8390_P0_RBCR1
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out dx, al
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mov dx, bx
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add dx, D8390_P0_RCR
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mov al, 0x20
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out dx, al
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mov dx, bx
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add dx, D8390_P0_TCR
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mov al, 2
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out dx, al
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mov dx, bx
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add dx, D8390_P0_TPSR
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mov al, [eth_tx_start]
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out dx, al
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mov dx, bx
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add dx, D8390_P0_PSTART
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mov al, [eth_rx_start]
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out dx, al
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mov dx, bx
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add dx, D8390_P0_PSTOP
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mov al, [eth_memsize]
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out dx, al
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mov dx, bx
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add dx, D8390_P0_BOUND
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mov al, [eth_memsize]
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dec al
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out dx, al
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mov dx, bx
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add dx, D8390_P0_ISR
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mov al, 0xff
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out dx, al
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mov dx, bx
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add dx, D8390_P0_IMR
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xor al, al
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out dx, al
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mov dx, bx
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add dx, D8390_P0_COMMAND
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mov al, D8390_COMMAND_PS1_RD2_STP
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out dx, al
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mov dx, bx
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add dx, D8390_P1_PAR0
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mov esi, node_addr
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mov ecx, ETH_ALEN
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nsr_003:
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mov al, [esi]
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out dx, al
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inc esi
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inc dx
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loop nsr_003
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mov dx, bx
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add dx, D8390_P1_MAR0
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mov ecx, ETH_ALEN
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mov al, 0xff
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nsr_004:
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out dx, al
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inc dx
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loop nsr_004
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mov dx, bx
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add dx, D8390_P1_CURR
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mov al, [eth_rx_start]
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out dx, al
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mov dx, bx
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add dx, D8390_P0_COMMAND
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mov al, D8390_COMMAND_PS0_RD2_STA
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out dx, al
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mov dx, bx
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add dx, D8390_P0_ISR
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mov al, 0xff
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out dx, al
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mov dx, bx
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add dx, D8390_P0_TCR
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mov al, 0
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out dx, al
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mov dx, bx
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add dx, D8390_P0_RCR
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mov al, 4
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out dx, al
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ret
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;***************************************************************************
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; Function
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; rtl8029_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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;
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;***************************************************************************
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rtl8029_probe:
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mov eax, [io_addr]
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mov [eth_nic_base], ax ; The IO address space is 16 bit only
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mov al, VENDOR_NONE
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mov [eth_vendor], al
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mov al, [eth_vendor]
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cmp al, VENDOR_NONE
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jne ep_check_have_vendor
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xor eax, eax
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mov [eth_bmem], eax
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mov al, FLAG_PIO
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mov [eth_flags], al
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mov ax, [eth_nic_base]
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add ax, NE_ASIC_OFFSET
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mov [eth_asic_base], ax
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mov al, MEM_16384
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mov [eth_memsize], al
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mov al, 32
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mov [eth_tx_start], al
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add al, D8390_TXBUF_SIZE
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mov [eth_rx_start], al
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mov dx, [eth_asic_base]
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add dx, NE_RESET
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in al, dx
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out dx, al
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in al, 0x84
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mov bx, [eth_nic_base]
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mov dx, bx
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add dx, D8390_P0_COMMAND
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mov al, D8390_COMMAND_RD2_STP
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out dx, al
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mov dx, bx
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add dx, D8390_P0_RCR
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mov al, D8390_RCR_MON
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out dx, al
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mov dx, bx
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add dx, D8390_P0_DCR
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mov al, D8390_DCR_FT1_LS
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out dx, al
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mov dx, bx
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add dx, D8390_P0_PSTART
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mov al, MEM_8192
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out dx, al
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mov dx, bx
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add dx, D8390_P0_PSTOP
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mov al, MEM_16384
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out dx, al
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mov esi, test_data
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mov ebx, 8192
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mov ecx, 14
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call eth_pio_write
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mov ebx, 8192
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mov ecx, 14
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mov edi, test_buffer
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call eth_pio_read
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mov esi, test_buffer
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mov edi, test_data
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mov ecx, 13
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cld
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rep cmpsb
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je ep_set_vendor
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|
|
mov al, [eth_flags]
|
|
or al, FLAG_16BIT
|
|
mov [eth_flags], al
|
|
|
|
mov al, MEM_32768
|
|
mov [eth_memsize], al
|
|
|
|
mov al, 64
|
|
mov [eth_tx_start], al
|
|
|
|
add al, D8390_TXBUF_SIZE
|
|
mov [eth_rx_start], al
|
|
|
|
mov bx, [eth_nic_base]
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_DCR
|
|
mov al, D8390_DCR_WTS_FT1_LS
|
|
out dx, al
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_PSTART
|
|
mov al, MEM_16384
|
|
out dx, al
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_PSTOP
|
|
mov al, MEM_32768
|
|
out dx, al
|
|
|
|
mov esi, test_data
|
|
mov ebx, 16384
|
|
mov ecx, 14
|
|
call eth_pio_write
|
|
|
|
mov ebx, 16384
|
|
mov ecx, 14
|
|
mov edi, test_buffer
|
|
call eth_pio_read
|
|
|
|
mov esi, test_buffer
|
|
mov edi, test_data
|
|
mov ecx, 13
|
|
cld
|
|
rep cmpsb
|
|
|
|
ep_set_vendor:
|
|
; this bit is odd - probably left over from my hacking
|
|
mov ax, [eth_nic_base]
|
|
cmp ax, 0
|
|
je rtl8029_exit
|
|
cmp ax, ISA_MAX_ADDR
|
|
jbe ep_001
|
|
mov al, [eth_flags]
|
|
or al, FLAG_16BIT
|
|
mov [eth_flags], al
|
|
|
|
ep_001:
|
|
mov al, VENDOR_NOVELL
|
|
mov [eth_vendor], al
|
|
|
|
mov ebx, 0
|
|
mov ecx, 16
|
|
mov edi, romdata
|
|
call eth_pio_read
|
|
|
|
|
|
mov ecx, ETH_ALEN
|
|
mov esi, romdata
|
|
mov edi, node_addr
|
|
|
|
mov bl, [eth_flags]
|
|
and bl, FLAG_16BIT
|
|
|
|
ep_002:
|
|
mov al, [esi]
|
|
mov [edi], al
|
|
|
|
inc edi
|
|
inc esi
|
|
cmp bl, FLAG_16BIT
|
|
jne ep_003
|
|
|
|
inc esi
|
|
|
|
ep_003:
|
|
loop ep_002
|
|
|
|
ep_check_have_vendor:
|
|
mov al, [eth_vendor]
|
|
cmp al, VENDOR_NONE
|
|
je rtl8029_exit
|
|
|
|
cmp al, VENDOR_3COM
|
|
je ep_reset_card
|
|
|
|
mov eax, [eth_bmem]
|
|
mov [eth_rmem], eax
|
|
|
|
ep_reset_card:
|
|
; Reset the card
|
|
call rtl8029_reset
|
|
|
|
; Indicate that we have successfully reset the card
|
|
mov eax, [pci_data]
|
|
mov [eth_status], eax
|
|
|
|
rtl8029_exit:
|
|
ret
|
|
|
|
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; rtl8029_poll
|
|
;
|
|
; Description
|
|
; Polls the ethernet card for a received packet
|
|
; Received data, if any, ends up in Ether_buffer
|
|
;
|
|
;***************************************************************************
|
|
rtl8029_poll:
|
|
mov eax, Ether_buffer
|
|
mov [eth_rx_data_ptr], eax
|
|
|
|
mov bx, [eth_nic_base]
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_RSR
|
|
in al, dx
|
|
|
|
and al, D8390_RSTAT_PRX
|
|
cmp al, D8390_RSTAT_PRX
|
|
jne nsp_exit
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_BOUND
|
|
in al, dx
|
|
inc al
|
|
|
|
cmp al, [eth_memsize]
|
|
jb nsp_001
|
|
|
|
mov al, [eth_rx_start]
|
|
|
|
nsp_001:
|
|
mov ch, al
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_COMMAND
|
|
mov al, D8390_COMMAND_PS1
|
|
out dx, al
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P1_CURR
|
|
in al, dx ; get current page
|
|
mov cl, al
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_COMMAND
|
|
mov al, D8390_COMMAND_PS0
|
|
out dx, al
|
|
|
|
cmp cl, [eth_memsize]
|
|
jb nsp_002
|
|
|
|
mov cl, [eth_rx_start]
|
|
|
|
nsp_002:
|
|
cmp cl, ch
|
|
je nsp_exit
|
|
|
|
xor ax, ax
|
|
mov ah, ch
|
|
|
|
mov [pktoff], ax
|
|
|
|
mov al, [eth_flags]
|
|
and al, FLAG_PIO
|
|
cmp al, FLAG_PIO
|
|
jne nsp_003
|
|
|
|
movzx ebx, word [pktoff]
|
|
mov edi, pkthdr
|
|
mov ecx, 4
|
|
call eth_pio_read
|
|
jmp nsp_004
|
|
|
|
nsp_003:
|
|
mov edi, [eth_rmem]
|
|
movzx eax, word [pktoff]
|
|
add edi, eax
|
|
mov eax, [edi]
|
|
mov [pkthdr], eax
|
|
|
|
nsp_004:
|
|
mov ax, [pktoff]
|
|
add ax, 4
|
|
mov [pktoff], ax
|
|
|
|
mov ax, [pkthdr + 2]
|
|
sub ax, 4
|
|
|
|
mov [eth_tmp_len], ax
|
|
|
|
cmp ax, ETH_ZLEN
|
|
jb nsp_exit
|
|
|
|
cmp ax, ETH_FRAME_LEN
|
|
ja nsp_exit
|
|
|
|
mov al, [pkthdr]
|
|
and al, D8390_RSTAT_PRX
|
|
cmp al, D8390_RSTAT_PRX
|
|
jne nsp_exit
|
|
|
|
; Right, we can now get the data
|
|
|
|
mov ax, [eth_tmp_len]
|
|
mov [eth_rx_data_len], ax
|
|
|
|
xor ebx, ebx
|
|
mov bh, [eth_memsize]
|
|
sub bx, [pktoff]
|
|
|
|
cmp [eth_tmp_len], bx
|
|
jbe nsp_005
|
|
|
|
mov al, [eth_flags]
|
|
and al, FLAG_PIO
|
|
cmp al, FLAG_PIO
|
|
jne nsp_006
|
|
|
|
push ebx
|
|
mov ecx, ebx
|
|
xor ebx, ebx
|
|
mov bx, [pktoff]
|
|
mov edi, [eth_rx_data_ptr]
|
|
call eth_pio_read
|
|
pop ebx
|
|
jmp nsp_007
|
|
|
|
nsp_006:
|
|
; Not implemented, as we are using PIO mode on this card
|
|
|
|
nsp_007:
|
|
xor ax, ax
|
|
mov ah, [eth_rx_start]
|
|
mov [pktoff], ax
|
|
|
|
mov eax, [eth_rx_data_ptr]
|
|
add eax, ebx
|
|
mov [eth_rx_data_ptr], eax
|
|
|
|
mov ax, [eth_tmp_len]
|
|
sub ax, bx
|
|
mov [eth_tmp_len], ax
|
|
|
|
nsp_005:
|
|
mov al, [eth_flags]
|
|
and al, FLAG_PIO
|
|
cmp al, FLAG_PIO
|
|
jne nsp_008
|
|
|
|
xor ebx, ebx
|
|
mov bx, [pktoff]
|
|
xor ecx, ecx
|
|
mov cx, [eth_tmp_len]
|
|
mov edi, [eth_rx_data_ptr]
|
|
call eth_pio_read
|
|
jmp nsp_009
|
|
|
|
nsp_008:
|
|
; Not implemented, as we are using PIO mode on this card
|
|
|
|
nsp_009:
|
|
mov al, [pkthdr+1]
|
|
cmp al, [eth_rx_start]
|
|
jne nsp_010
|
|
|
|
mov al, [eth_memsize]
|
|
|
|
nsp_010:
|
|
mov dx, [eth_nic_base]
|
|
add dx, D8390_P0_BOUND
|
|
dec al
|
|
out dx, al
|
|
|
|
nsp_exit:
|
|
ret
|
|
|
|
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; rtl8029_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
|
|
;
|
|
;***************************************************************************
|
|
rtl8029_transmit:
|
|
mov [eth_type], bx
|
|
|
|
pusha
|
|
|
|
mov esi, edi
|
|
xor bx, bx
|
|
mov bh, [eth_tx_start]
|
|
mov ecx, ETH_ALEN
|
|
call eth_pio_write
|
|
|
|
mov esi, node_addr
|
|
xor bx, bx
|
|
mov bh, [eth_tx_start]
|
|
add bx, ETH_ALEN
|
|
mov ecx, ETH_ALEN
|
|
call eth_pio_write
|
|
|
|
mov esi, eth_type
|
|
xor bx, bx
|
|
mov bh, [eth_tx_start]
|
|
add bx, ETH_ALEN
|
|
add bx, ETH_ALEN
|
|
mov ecx, 2
|
|
call eth_pio_write
|
|
|
|
popa
|
|
|
|
xor bx, bx
|
|
mov bh, [eth_tx_start]
|
|
add bx, ETH_HLEN
|
|
push ecx
|
|
call eth_pio_write
|
|
pop ecx
|
|
|
|
add ecx, ETH_HLEN
|
|
cmp ecx, ETH_ZLEN
|
|
jae nst_001
|
|
|
|
mov ecx, ETH_ZLEN
|
|
|
|
nst_001:
|
|
push ecx
|
|
|
|
mov bx, [eth_nic_base]
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_COMMAND
|
|
mov al, D8390_COMMAND_PS0_RD2_STA
|
|
out dx, al
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_TPSR
|
|
mov al, [eth_tx_start]
|
|
out dx, al
|
|
|
|
pop ecx
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_TBCR0
|
|
mov al, cl
|
|
out dx, al
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_TBCR1
|
|
mov al, ch
|
|
out dx, al
|
|
|
|
mov dx, bx
|
|
add dx, D8390_P0_COMMAND
|
|
mov al, D8390_COMMAND_PS0_TXP_RD2_STA
|
|
out dx, al
|
|
|
|
ret
|