forked from KolibriOS/kolibrios
1209 lines
30 KiB
NASM
1209 lines
30 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2014. 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/ne2000 driver for KolibriOS ;;
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;; ;;
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;; based on RTL8029.asm driver for menuetos ;;
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;; and realtek8029.asm for SolarOS by Eugen Brasoveanu ;;
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;; ;;
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;; Written by hidnplayr@kolibrios.org ;;
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;; with help from CleverMouse ;;
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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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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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format MS COFF
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API_VERSION = 0x01000100
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DRIVER_VERSION = 5
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MAX_DEVICES = 16
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DEBUG = 1
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__DEBUG__ = 1
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__DEBUG_LEVEL__ = 2 ; 1 = verbose, 2 = errors only
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include '../struct.inc'
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include '../macros.inc'
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include '../proc32.inc'
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include '../imports.inc'
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include '../fdo.inc'
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include '../netdrv.inc'
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virtual at ebx
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device:
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ETH_DEVICE
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.io_addr dd ?
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.irq_line db ?
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.pci_bus dd ?
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.pci_dev dd ?
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.flags db ?
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.vendor db ?
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.memsize db ?
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.rx_start db ?
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.tx_start db ?
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.bmem dd ?
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.rmem dd ?
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.size = $ - device
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end virtual
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public START
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public service_proc
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public version
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P0_COMMAND = 0x00
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P0_PSTART = 0x01
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P0_PSTOP = 0x02
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P0_BOUND = 0x03
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P0_TSR = 0x04
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P0_TPSR = 0x04
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P0_TBCR0 = 0x05
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P0_TBCR1 = 0x06
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P0_ISR = 0x07
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P0_RSAR0 = 0x08
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P0_RSAR1 = 0x09
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P0_RBCR0 = 0x0A
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P0_RBCR1 = 0x0B
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P0_RSR = 0x0C
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P0_RCR = 0x0C
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P0_TCR = 0x0D
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P0_DCR = 0x0E
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P0_IMR = 0x0F
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P1_COMMAND = 0x00
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P1_PAR0 = 0x01
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P1_PAR1 = 0x02
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P1_PAR2 = 0x03
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P1_PAR3 = 0x04
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P1_PAR4 = 0x05
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P1_PAR5 = 0x06
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P1_CURR = 0x07
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P1_MAR0 = 0x08
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CMD_PS0 = 0x00 ; Page 0 select
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CMD_PS1 = 0x40 ; Page 1 select
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CMD_PS2 = 0x80 ; Page 2 select
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CMD_RD2 = 0x20 ; Remote DMA control
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CMD_RD1 = 0x10
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CMD_RD0 = 0x08
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CMD_TXP = 0x04 ; transmit packet
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CMD_STA = 0x02 ; start
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CMD_STP = 0x01 ; stop
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CMD_RDMA_READ = 001b shl 3
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CMD_RDMA_WRITE = 010b shl 3
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CMD_RDMA_SEND_PACKET = 011b shl 3
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CMD_RDMA_ABORT = 100b shl 3 ; really is 1xx, Abort/Complete Remote DMA
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; RDMA_MASK = 111b shl 3 ; internal, mask
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RCR_MON = 0x20 ; monitor mode
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DCR_FT1 = 0x40
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DCR_LS = 0x08 ; Loopback select
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DCR_WTS = 0x01 ; Word transfer select
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ISR_PRX = 0x01 ; successful recv
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ISR_PTX = 0x02 ; successful xmit
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ISR_RXE = 0x04 ; receive error
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ISR_TXE = 0x08 ; transmit error
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ISR_OVW = 0x10 ; Overflow
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ISR_CNT = 0x20 ; Counter overflow
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ISR_RDC = 0x40 ; Remote DMA complete
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ISR_RST = 0x80 ; reset
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IRQ_MASK = ISR_PRX ;+ ISR_PTX ;+ ISR_RDC + ISR_PTX + ISR_TXE
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RSTAT_PRX = 1 shl 0 ; successful recv
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RSTAT_CRC = 1 shl 1 ; CRC error
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RSTAT_FAE = 1 shl 2 ; Frame alignment error
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RSTAT_OVER = 1 shl 3 ; FIFO overrun
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TXBUF_SIZE = 6
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RXBUF_END = 32
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PAGE_SIZE = 256
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ETH_ZLEN = 60
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ETH_FRAME_LEN = 1514
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FLAG_PIO = 1 shl 0
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FLAG_16BIT = 1 shl 1
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VENDOR_NONE = 0
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VENDOR_WD = 1
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VENDOR_NOVELL = 2
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VENDOR_3COM = 3
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NE_ASIC = 0x10
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NE_RESET = 0x0F ; Used to reset card
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NE_DATA = 0x00 ; Used to read/write NIC mem
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MEM_8k = 32
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MEM_16k = 64
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MEM_32k = 128
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ISA_MAX_ADDR = 0x400
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section '.flat' code readable align 16
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;; proc START
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;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 4
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proc START stdcall, state:dword
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cmp [state], 1
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jne .exit
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.entry:
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DEBUGF 1, "Loading driver\n"
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stdcall RegService, my_service, service_proc
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ret
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.fail:
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.exit:
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xor eax, eax
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ret
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endp
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;; proc SERVICE_PROC
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;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 4
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proc service_proc stdcall, ioctl:dword
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mov edx, [ioctl]
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mov eax, [edx + IOCTL.io_code]
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;------------------------------------------------------
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;---------------
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cmp eax, 0 ;SRV_GETVERSION
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jne @F ;---------------
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cmp [edx + IOCTL.out_size], 4
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jb .fail
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mov eax, [edx + IOCTL.output]
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mov [eax], dword API_VERSION
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xor eax, eax
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ret
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;------------------------------------------------------
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@@: ;---------
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cmp eax, 1 ;SRV_HOOK
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jne @F ;---------
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DEBUGF 1, "Checking if device is already listed..\n"
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mov eax, [edx + IOCTL.input]
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cmp [edx + IOCTL.inp_size], 3
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jb .fail
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cmp byte [eax], 1
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je .pci
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cmp [edx + IOCTL.inp_size], 4
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jb .fail
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cmp byte [eax], 0
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je .isa
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jmp .fail
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.pci:
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; check if the device is already listed
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mov esi, device_list
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mov ecx, [devices]
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test ecx, ecx
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jz .firstdevice_pci
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mov ax, [eax+1] ; get the pci bus and device numbers
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.nextdevice:
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mov ebx, [esi]
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cmp al, byte[device.pci_bus]
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jne @f
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cmp ah, byte[device.pci_dev]
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je .find_devicenum ; Device is already loaded, let's find it's device number
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@@:
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add esi, 4
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loop .nextdevice
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.firstdevice_pci:
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call create_new_struct
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mov eax, [edx + IOCTL.input]
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movzx ecx, byte[eax+1]
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mov [device.pci_bus], ecx
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movzx ecx, byte[eax+2]
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mov [device.pci_dev], ecx
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; Now, it's time to find the base io addres of the PCI device
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PCI_find_io
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; We've found the io address, find IRQ now
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PCI_find_irq
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jmp .hook
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.isa:
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mov esi, device_list
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mov ecx, [devices]
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test ecx, ecx
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jz .firstdevice_isa
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mov al, [eax+3]
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movzx edi, word [eax+1]
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.nextdevice_isa:
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mov ebx, [esi]
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cmp edi, [device.io_addr]
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jne .maybenext
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cmp al, [device.irq_line]
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je find_device_num
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.maybenext:
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add esi, 4
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loop .nextdevice_isa
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.firstdevice_isa:
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call create_new_struct
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mov eax, [edx + IOCTL.input]
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movzx ecx, word [eax+1]
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mov [device.io_addr], ecx
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mov cl, [eax+3]
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mov [device.irq_line], cl
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.hook:
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DEBUGF 1, "Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\
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[device.pci_dev]:1,[device.pci_bus]:1,[device.irq_line]:1,[device.io_addr]:4
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call probe ; this function will output in eax
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test eax, eax
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jnz .err ; If an error occured, exit
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mov eax, [devices]
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mov [device_list+4*eax], ebx
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inc [devices]
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mov [device.type], NET_TYPE_ETH
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call NetRegDev
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cmp eax, -1
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jz .err
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ret
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; If the device was already loaded, find the device number and return it in eax
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.find_devicenum:
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DEBUGF 1, "Trying to find device number of already registered device\n"
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call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx
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; into a device number in edi
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mov eax, edi ; Application wants it in eax instead
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DEBUGF 1, "Kernel says: %u\n", eax
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ret
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.err:
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DEBUGF 2, "Failed, removing device structure\n"
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stdcall KernelFree, ebx
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jmp .fail
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;------------------------------------------------------
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@@:
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.fail:
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or eax, -1
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ret
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;------------------------------------------------------
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endp
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create_new_struct:
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cmp [devices], MAX_DEVICES
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jae .fail
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allocate_and_clear ebx, device.size, .fail ; Allocate the buffer for device structure
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mov [device.reset], reset
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mov [device.transmit], transmit
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mov [device.unload], unload
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mov [device.name], my_service
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ret
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.fail:
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add esp, 4 ; return to caller of 'hook'
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or eax, -1
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ret
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find_device_num:
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DEBUGF 1, "Trying to find device number of already registered device\n"
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mov ebx, eax
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call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx
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; into a device number in edi
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mov eax, edi ; Application wants it in eax instead
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DEBUGF 1, "Kernel says: %u\n", eax
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ret
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;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
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;; ;;
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;; Actual Hardware dependent code starts here ;;
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;; ;;
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;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
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unload: ; TODO
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or eax, -1
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ret
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;; probe: enables the device and clears the rx buffer
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;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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probe:
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mov [device.vendor], VENDOR_NONE
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mov [device.bmem], 0
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DEBUGF 1, "Trying 16-bit mode\n"
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mov [device.flags], FLAG_16BIT + FLAG_PIO
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mov [device.memsize], MEM_32k
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mov [device.tx_start], 64
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mov [device.rx_start], TXBUF_SIZE + 64
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set_io 0
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set_io P0_DCR
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mov al, DCR_WTS + DCR_FT1 + DCR_LS ; word transfer select +
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out dx, al
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set_io P0_PSTART
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mov al, MEM_16k
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out dx, al
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set_io P0_PSTOP
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mov al, MEM_32k
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out dx, al
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mov esi, my_service
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mov di, 16384
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mov cx, 14
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call PIO_write
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mov si, 16384
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mov cx, 14
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sub esp, 16
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mov edi, esp
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call PIO_read
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mov esi, esp
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add esp, 16
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mov edi, my_service
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mov ecx, 13
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repe cmpsb
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je ep_set_vendor
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DEBUGF 1, "16-bit mode failed\n"
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DEBUGF 1, "Trying 8-bit mode\n"
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mov [device.flags], FLAG_PIO
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mov [device.memsize], MEM_16k
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mov [device.tx_start], 32
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mov [device.rx_start], TXBUF_SIZE + 32
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set_io NE_ASIC + 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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set_io P0_COMMAND
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mov al, CMD_RD2 + CMD_STP
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out dx, al
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set_io P0_RCR
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mov al, RCR_MON
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out dx, al
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set_io P0_DCR
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mov al, DCR_FT1 + DCR_LS
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out dx, al
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set_io P0_PSTART
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mov al, MEM_8k
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out dx, al
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set_io P0_PSTOP
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mov al, MEM_16k
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out dx, al
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mov esi, my_service
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mov di, 8192
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mov cx, 14
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call PIO_write
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mov si, 8192
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mov cx, 14
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sub esp, 16
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mov edi, esp
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call PIO_read
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mov esi, my_service
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mov edi, esp
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add esp, 16
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mov ecx, 13
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repe cmpsb
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je ep_set_vendor
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DEBUGF 2, "This is not a valid ne2000 device!\n"
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or eax, -1
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ret
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ep_set_vendor:
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DEBUGF 1, "Mode ok\n"
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cmp [device.io_addr], ISA_MAX_ADDR
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jbe .isa
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DEBUGF 1, "Card is using PCI bus\n"
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mov [device.vendor], VENDOR_NOVELL ;;; FIXME
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jmp ep_check_have_vendor
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.isa:
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DEBUGF 1, "Card is using ISA bus\n"
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mov [device.vendor], VENDOR_NOVELL
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ep_check_have_vendor:
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mov al, [device.vendor]
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cmp al, VENDOR_NONE
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; je exit
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cmp al, VENDOR_3COM
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je reset
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mov eax, [device.bmem]
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mov [device.rmem], eax
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;; reset: Place the chip into a virgin state
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;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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reset:
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DEBUGF 1, "Resetting device\n"
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; attach int handler
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movzx eax, [device.irq_line]
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DEBUGF 1, "Attaching int handler to irq %x\n", eax:1
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stdcall AttachIntHandler, eax, int_handler, dword 0
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test eax, eax
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jnz @f
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DEBUGF 2, "Could not attach int handler!\n"
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; or eax, -1
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; ret
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@@:
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; Stop card + DMA
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set_io 0
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; set_io P0_COMMAND
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mov al, CMD_PS0 + CMD_RDMA_ABORT + CMD_STP
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out dx, al
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; initialize DCR
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set_io P0_DCR
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mov al, DCR_FT1 + DCR_LS
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test [device.flags], FLAG_16BIT
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jz @f
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or al, DCR_WTS ; word transfer select
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@@:
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out dx, al
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; clear remote bytes count
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set_io P0_RBCR0
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xor al, al
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out dx, al
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set_io P0_RBCR1
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out dx, al
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; initialize Receive configuration register (until all init is done)
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set_io P0_RCR
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mov al, 0x20 ; monitor mode
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out dx, al
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; transmit configuration register to monitor mode (until all ini is done)
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set_io P0_TCR
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mov al, 2 ; internal loopback
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out dx, al
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; clear interupt status
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set_io P0_ISR
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mov al, 0xff
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out dx, al
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; clear IRQ mask ;;;;; CHECKME ;;;;;
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set_io P0_IMR
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xor al, al
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out dx, al
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; set transmit pointer
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set_io P0_TPSR
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mov al, [device.tx_start]
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out dx, al
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; set pagestart pointer
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set_io P0_PSTART
|
|
mov al, [device.rx_start]
|
|
out dx, al
|
|
|
|
; set pagestop pointer
|
|
set_io P0_PSTOP
|
|
mov al, [device.memsize]
|
|
out dx, al
|
|
|
|
; set boundary pointer
|
|
set_io P0_BOUND
|
|
mov al, [device.memsize]
|
|
dec al
|
|
out dx, al
|
|
|
|
; set curr pointer
|
|
set_io P0_COMMAND
|
|
mov al, CMD_PS1 ;+ CMD_RD2 + CMD_STP ; page 1, stop mode
|
|
out dx, al
|
|
|
|
set_io P1_CURR
|
|
mov al, [device.rx_start]
|
|
out dx, al
|
|
|
|
set_io P0_COMMAND
|
|
mov al, CMD_PS0 ;+ CMD_RD2 + CMD_STA ; go to page 0, start mode
|
|
out dx, al
|
|
|
|
; Read MAC address and set it to registers
|
|
call read_mac
|
|
push .macret
|
|
sub esp, 6
|
|
lea esi, [device.mac]
|
|
mov edi, esp
|
|
movsd
|
|
movsw
|
|
jmp write_mac
|
|
.macret:
|
|
|
|
; set IRQ mask
|
|
set_io 0
|
|
set_io P0_IMR
|
|
mov al, IRQ_MASK
|
|
out dx, al
|
|
|
|
; start mode
|
|
set_io P0_COMMAND
|
|
mov al, CMD_STA
|
|
out dx, al
|
|
|
|
; clear transmit control register
|
|
set_io P0_TCR
|
|
xor al, al ; no loopback
|
|
out dx, al
|
|
|
|
; set receive control register ;;;;
|
|
set_io P0_RCR
|
|
mov al, 4 ; accept broadcast
|
|
out dx, al
|
|
|
|
; clear packet/byte counters
|
|
xor eax, eax
|
|
lea edi, [device.bytes_tx]
|
|
mov ecx, 6
|
|
rep stosd
|
|
|
|
; Set the mtu, kernel will be able to send now
|
|
mov [device.mtu], ETH_FRAME_LEN
|
|
|
|
; Set link state to unknown
|
|
mov [device.state], ETH_LINK_UNKOWN
|
|
|
|
; Indicate that we have successfully reset the card
|
|
xor eax, eax
|
|
DEBUGF 1, "Done!\n"
|
|
|
|
ret
|
|
|
|
|
|
|
|
;***************************************************************************
|
|
; Function
|
|
; transmit
|
|
; buffer in [esp+4], size in [esp+8], pointer to device struct in ebx
|
|
;***************************************************************************
|
|
|
|
align 4
|
|
transmit:
|
|
|
|
mov esi, [esp + 4]
|
|
mov ecx, [esp + 8]
|
|
DEBUGF 1, "Transmitting packet, buffer:%x, size:%u\n",esi, ecx
|
|
DEBUGF 1, "To: %x-%x-%x-%x-%x-%x From: %x-%x-%x-%x-%x-%x Type:%x%x\n",\
|
|
[esi+0]:2,[esi+1]:2,[esi+2]:2,[esi+3]:2,[esi+4]:2,[esi+5]:2,[esi+6]:2,[esi+7]:2,[esi+8]:2,[esi+9]:2,[esi+10]:2,[esi+11]:2,[esi+13]:2,[esi+12]:2
|
|
|
|
cmp ecx, ETH_FRAME_LEN
|
|
ja .err ; packet is too long
|
|
cmp ecx, ETH_ZLEN
|
|
jb .err ; packet is too short
|
|
|
|
movzx edi, [device.tx_start]
|
|
shl edi, 8
|
|
push cx
|
|
call PIO_write
|
|
pop cx
|
|
|
|
set_io 0
|
|
; set_io P0_COMMAND
|
|
mov al, CMD_PS0 + CMD_RD2 + CMD_STA
|
|
out dx, al
|
|
|
|
set_io P0_TPSR
|
|
mov al, [device.tx_start]
|
|
out dx, al
|
|
|
|
set_io P0_TBCR0
|
|
mov al, cl
|
|
out dx, al
|
|
|
|
set_io P0_TBCR1
|
|
mov al, ch
|
|
out dx, al
|
|
|
|
set_io P0_COMMAND
|
|
mov al, CMD_PS0 + CMD_TXP + CMD_RD2 + CMD_STA
|
|
out dx, al
|
|
|
|
DEBUGF 1, "Packet Sent!\n"
|
|
|
|
inc [device.packets_tx]
|
|
mov eax, [esp + 8] ; Get packet size in eax
|
|
|
|
add dword [device.bytes_tx], eax
|
|
adc dword [device.bytes_tx + 4], 0
|
|
|
|
stdcall KernelFree, [esp+4]
|
|
xor eax, eax
|
|
ret 8
|
|
|
|
.err:
|
|
DEBUGF 2, "Transmit error!\n"
|
|
stdcall KernelFree, [esp+4]
|
|
or eax, -1
|
|
ret 8
|
|
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;
|
|
; Interrupt handler
|
|
;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
align 4
|
|
int_handler:
|
|
|
|
push ebx esi edi
|
|
|
|
DEBUGF 1, "INT\n"
|
|
|
|
; find pointer of device wich made INT occur
|
|
|
|
mov ecx, [devices]
|
|
test ecx, ecx
|
|
jz .nothing
|
|
mov esi, device_list
|
|
.nextdevice:
|
|
mov ebx, [esi]
|
|
|
|
set_io 0
|
|
; set_io P0_COMMAND
|
|
mov al, CMD_PS0
|
|
out dx, al
|
|
|
|
set_io P0_ISR
|
|
in al, dx
|
|
test al, al
|
|
jnz .got_it
|
|
.continue:
|
|
add esi, 4
|
|
dec ecx
|
|
jnz .nextdevice
|
|
.nothing:
|
|
pop edi esi ebx
|
|
xor eax, eax
|
|
|
|
ret
|
|
|
|
.got_it:
|
|
|
|
DEBUGF 1, "Device=%x status=%x\n", ebx, eax:2
|
|
|
|
push ebx
|
|
|
|
test al, ISR_PRX ; packet received ok ?
|
|
jz .no_rx
|
|
|
|
test [device.flags], FLAG_PIO
|
|
jz .no_rx ; FIXME: Only PIO mode supported for now
|
|
|
|
;
|
|
|
|
pushd .no_rx
|
|
|
|
; allocate a buffer
|
|
|
|
stdcall KernelAlloc, ETH_FRAME_LEN
|
|
test eax, eax
|
|
jz .fail_2
|
|
pushd 0
|
|
push eax
|
|
|
|
; read offset for current packet from device
|
|
|
|
set_io 0
|
|
set_io P0_BOUND ; boundary ptr is offset to next packet we need to read.
|
|
in al, dx
|
|
inc al
|
|
|
|
cmp al, [device.memsize]
|
|
jb @f
|
|
mov al, [device.rx_start]
|
|
@@:
|
|
mov ch, al
|
|
|
|
set_io P0_COMMAND
|
|
mov al, CMD_PS1
|
|
out dx, al
|
|
|
|
set_io P1_CURR
|
|
in al, dx ; get current page in cl
|
|
mov cl, al
|
|
|
|
set_io P1_COMMAND
|
|
mov al, CMD_PS0
|
|
out dx, al
|
|
|
|
cmp cl, [device.memsize]
|
|
jb @f
|
|
mov cl, [device.rx_start]
|
|
@@:
|
|
|
|
cmp cl, ch
|
|
je .fail
|
|
|
|
movzx esi, ch ; we are using 256 byte pages
|
|
shl esi, 8 ; esi now holds the offset for current packet
|
|
|
|
; Get packet header in eax
|
|
|
|
sub esp, 4 ; reserve 4 bytes on stack to put packet header in
|
|
mov edi, esp
|
|
mov cx, 4
|
|
call PIO_read
|
|
|
|
mov ecx, [esp] ; ecx now contains packet header
|
|
|
|
; check if packet is ok
|
|
|
|
test ecx, RSTAT_PRX
|
|
jz .fail_3
|
|
|
|
; calculate packet length in ecx
|
|
|
|
shr ecx, 16
|
|
sub ecx, 4 ; CRC doesnt count as data byte
|
|
mov [esp + 4 + 4], ecx
|
|
|
|
; check if packet size is ok
|
|
|
|
cmp ecx, ETH_ZLEN
|
|
jb .fail_3
|
|
cmp ecx, ETH_FRAME_LEN
|
|
ja .fail_3
|
|
|
|
; update stats
|
|
|
|
DEBUGF 1, "Received %u bytes\n", ecx
|
|
|
|
add dword[device.bytes_rx], ecx
|
|
adc dword[device.bytes_rx + 4], 0
|
|
inc [device.packets_rx]
|
|
|
|
; update read and write pointers
|
|
|
|
add esi, 4
|
|
mov edi, [esp + 4]
|
|
|
|
; now check if we can read all data at once (if we cross the end boundary, we need to wrap back to the beginning)
|
|
|
|
xor eax, eax
|
|
mov ah, [device.memsize]
|
|
sub eax, esi
|
|
cmp ecx, eax ; eax = number of bytes till end of buffer, ecx = bytes we need to read
|
|
jbe .no_wrap
|
|
|
|
; Read first part
|
|
|
|
sub ecx, eax
|
|
push ecx
|
|
mov ecx, eax
|
|
|
|
call PIO_read ; Read the data
|
|
|
|
; update pointers
|
|
|
|
add edi, ecx
|
|
pop ecx
|
|
|
|
movzx esi, [device.rx_start]
|
|
shl esi, 8
|
|
|
|
; now read second part (or only part)
|
|
|
|
.no_wrap:
|
|
call PIO_read ; Read the data
|
|
|
|
; update boundary pointer
|
|
|
|
pop eax
|
|
mov al, ah
|
|
cmp al, [device.rx_start]
|
|
jne @f
|
|
mov al, [device.memsize]
|
|
@@:
|
|
|
|
set_io 0
|
|
set_io P0_BOUND
|
|
dec al
|
|
out dx, al
|
|
|
|
; now send the data to the kernel
|
|
|
|
jmp Eth_input
|
|
|
|
.fail_3:
|
|
add esp, 4
|
|
.fail:
|
|
add esp, 8
|
|
.fail_2:
|
|
|
|
|
|
.no_rx:
|
|
pop ebx
|
|
DEBUGF 1, "done\n"
|
|
|
|
set_io 0
|
|
set_io P0_ISR
|
|
mov al, 0xff
|
|
out dx, al
|
|
|
|
pop edi esi ebx
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Write MAC address ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
align 4
|
|
write_mac: ; in: mac on stack (6 bytes)
|
|
|
|
DEBUGF 1, "Writing MAC\n"
|
|
|
|
set_io 0
|
|
mov al, CMD_PS1; + CMD_RD2 + CMD_STP
|
|
out dx, al
|
|
|
|
set_io P1_PAR0
|
|
mov esi, esp
|
|
mov cx, 6
|
|
@@:
|
|
lodsb
|
|
out dx, al
|
|
inc dx
|
|
loopw @r
|
|
|
|
add esp, 6
|
|
|
|
; Notice this procedure does not ret, but continues to read_mac instead.
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Read MAC address ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
read_mac:
|
|
|
|
DEBUGF 1, "Reading MAC\n"
|
|
|
|
xor esi, esi
|
|
mov cx, 16
|
|
sub esp, 16
|
|
mov edi, esp
|
|
call PIO_read
|
|
|
|
mov esi, esp
|
|
add esp, 16
|
|
lea edi, [device.mac]
|
|
mov ecx, 6
|
|
.loop:
|
|
movsb
|
|
test [device.flags], FLAG_16BIT
|
|
jz .8bit
|
|
inc esi
|
|
.8bit:
|
|
loop .loop
|
|
|
|
DEBUGF 1, "MAC=%x-%x-%x-%x-%x-%x\n",\
|
|
[device.mac]:2,[device.mac+1]:2,[device.mac+2]:2,[device.mac+3]:2,[device.mac+4]:2,[device.mac+5]:2
|
|
|
|
ret
|
|
|
|
|
|
;***************************************************************************
|
|
;
|
|
; PIO_read
|
|
;
|
|
; Description
|
|
; Read a frame from the ethernet card via Programmed I/O
|
|
; src in si
|
|
; cnt in cx
|
|
; dst in edi
|
|
;***************************************************************************
|
|
PIO_read:
|
|
|
|
DEBUGF 1, "PIO Read from %x to %x, %u bytes ", si, edi, cx
|
|
|
|
; start DMA
|
|
set_io 0
|
|
; set_io P0_COMMAND
|
|
mov al, CMD_RD2 + CMD_STA
|
|
out dx, al
|
|
|
|
; set length of data we're interested in
|
|
set_io P0_RBCR0
|
|
mov al, cl
|
|
out dx, al
|
|
|
|
set_io P0_RBCR1
|
|
mov al, ch
|
|
out dx, al
|
|
|
|
; set offset of what we want to read
|
|
set_io P0_RSAR0
|
|
mov ax, si
|
|
out dx, al
|
|
|
|
set_io P0_RSAR1
|
|
shr ax, 8
|
|
out dx, al
|
|
|
|
; start DMA read
|
|
set_io P0_COMMAND
|
|
mov al, CMD_RD0 + CMD_STA
|
|
out dx, al
|
|
|
|
set_io NE_ASIC
|
|
|
|
test [device.flags], FLAG_16BIT
|
|
jz .8bits
|
|
|
|
DEBUGF 1, "(16-bit mode)\n"
|
|
|
|
shr cx, 1 ; note that if the number was odd, carry flag will be set
|
|
pushf
|
|
|
|
.16bits:
|
|
in ax, dx
|
|
stosw
|
|
loopw .16bits
|
|
|
|
inc cx
|
|
popf
|
|
jnc .done
|
|
jmp .8bits_
|
|
|
|
.8bits:
|
|
DEBUGF 1, "(8-bit mode)\n"
|
|
|
|
.8bits_:
|
|
in al, dx
|
|
stosb
|
|
loopw .8bits_
|
|
|
|
|
|
.done:
|
|
; set_io 0
|
|
; set_io P0_ISR
|
|
;
|
|
; .dmawait: ; Wait for Remote DMA Complete
|
|
; in al, dx
|
|
; test al, ISR_RDC
|
|
; jz .dmawait
|
|
; and al, not ISR_RDC
|
|
; out dx, al ; clear the bit
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
;***************************************************************************
|
|
;
|
|
; PIO_write
|
|
;
|
|
; Description
|
|
; writes a frame to the ethernet card via Programmed I/O
|
|
; dst in di
|
|
; cnt in cx
|
|
; src in esi
|
|
;***************************************************************************
|
|
PIO_write:
|
|
|
|
DEBUGF 1, "Eth PIO Write from %x to %x, %u bytes ", esi, di, cx
|
|
|
|
set_io 0
|
|
; set_io P0_COMMAND
|
|
mov al, CMD_RD2 + CMD_STA
|
|
out dx, al
|
|
|
|
set_io P0_ISR
|
|
mov al, ISR_RDC
|
|
out dx, al
|
|
|
|
set_io P0_RBCR0
|
|
mov al, cl
|
|
out dx, al
|
|
|
|
set_io P0_RBCR1
|
|
mov al, ch
|
|
out dx, al
|
|
|
|
mov ax, di
|
|
set_io P0_RSAR0
|
|
out dx, al
|
|
shr ax, 8
|
|
set_io P0_RSAR1
|
|
out dx, al
|
|
|
|
set_io P0_COMMAND
|
|
mov al, CMD_RD1 + CMD_STA
|
|
out dx, al
|
|
|
|
set_io NE_ASIC
|
|
test [device.flags], FLAG_16BIT
|
|
jz .8_bit
|
|
|
|
DEBUGF 1, "(16-bit mode)\n"
|
|
|
|
shr cx, 1 ; note that if the number was odd, carry flag will be set
|
|
pushf ; save the flags for later
|
|
|
|
.16bit:
|
|
lodsw
|
|
out dx, ax
|
|
loopw .16bit
|
|
|
|
popf
|
|
jnc .done
|
|
inc cx
|
|
jmp .8_bit_
|
|
|
|
.8_bit:
|
|
|
|
DEBUGF 1, "(8-bit mode)\n"
|
|
|
|
.8_bit_:
|
|
lodsb
|
|
out dx, al
|
|
loopw .8_bit_
|
|
|
|
.done:
|
|
; set_io 0
|
|
; set_io P0_ISR
|
|
; .dmawait: ; Wait for Remote DMA Complete
|
|
; in al, dx
|
|
; test al, ISR_RDC
|
|
; jz .dmawait
|
|
; and al, not ISR_RDC
|
|
; out dx, al ; clear the bit
|
|
|
|
ret
|
|
|
|
|
|
|
|
;all initialized data place here
|
|
align 4
|
|
|
|
devices dd 0
|
|
version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF)
|
|
my_service db 'RTL8029/ne2000',0 ;max 16 chars include zero
|
|
|
|
;device_1 db 'Realtek 8029',0
|
|
;device_2 db 'Realtek 8019',0
|
|
;device_3 db 'Realtek 8019AS',0
|
|
;device_4 db 'ne2000',0
|
|
;device_5 db 'DP8390',0
|
|
|
|
include_debug_strings
|
|
|
|
section '.data' data readable writable align 16 ;place all uninitialized data place here
|
|
|
|
device_list rd MAX_DEVICES
|
|
|
|
|
|
|
|
|
|
|