;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;; ;; Distributed under terms of the GNU General Public License ;; ;; ;; ;; RTL8029/ne2000 driver for KolibriOS ;; ;; ;; ;; based on RTL8029.asm driver for menuetos ;; ;; and realtek8029.asm for SolarOS by Eugen Brasoveanu ;; ;; ;; ;; Written by hidnplayr@kolibrios.org ;; ;; with help from CleverMouse ;; ;; ;; ;; GNU GENERAL PUBLIC LICENSE ;; ;; Version 2, June 1991 ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; format MS COFF API_VERSION = 0x01000100 DRIVER_VERSION = 5 MAX_DEVICES = 16 DEBUG = 1 __DEBUG__ = 1 __DEBUG_LEVEL__ = 2 include '../proc32.inc' include '../imports.inc' include '../fdo.inc' include '../netdrv.inc' virtual at ebx device: ETH_DEVICE .io_addr dd ? .irq_line db ? .pci_bus dd ? .pci_dev dd ? .flags db ? .vendor db ? .memsize db ? .rx_start db ? .tx_start db ? .bmem dd ? .rmem dd ? .size = $ - device end virtual public START public service_proc public version P0_COMMAND = 0x00 P0_PSTART = 0x01 P0_PSTOP = 0x02 P0_BOUND = 0x03 P0_TSR = 0x04 P0_TPSR = 0x04 P0_TBCR0 = 0x05 P0_TBCR1 = 0x06 P0_ISR = 0x07 P0_RSAR0 = 0x08 P0_RSAR1 = 0x09 P0_RBCR0 = 0x0A P0_RBCR1 = 0x0B P0_RSR = 0x0C P0_RCR = 0x0C P0_TCR = 0x0D P0_DCR = 0x0E P0_IMR = 0x0F P1_COMMAND = 0x00 P1_PAR0 = 0x01 P1_PAR1 = 0x02 P1_PAR2 = 0x03 P1_PAR3 = 0x04 P1_PAR4 = 0x05 P1_PAR5 = 0x06 P1_CURR = 0x07 P1_MAR0 = 0x08 CMD_PS0 = 0x00 ; Page 0 select CMD_PS1 = 0x40 ; Page 1 select CMD_PS2 = 0x80 ; Page 2 select CMD_RD2 = 0x20 ; Remote DMA control CMD_RD1 = 0x10 CMD_RD0 = 0x08 CMD_TXP = 0x04 ; transmit packet CMD_STA = 0x02 ; start CMD_STP = 0x01 ; stop CMD_RDMA_READ = 001b shl 3 CMD_RDMA_WRITE = 010b shl 3 CMD_RDMA_SEND_PACKET = 011b shl 3 CMD_RDMA_ABORT = 100b shl 3 ; really is 1xx, Abort/Complete Remote DMA ; RDMA_MASK = 111b shl 3 ; internal, mask RCR_MON = 0x20 ; monitor mode DCR_FT1 = 0x40 DCR_LS = 0x08 ; Loopback select DCR_WTS = 0x01 ; Word transfer select ISR_PRX = 0x01 ; successful recv ISR_PTX = 0x02 ; successful xmit ISR_RXE = 0x04 ; receive error ISR_TXE = 0x08 ; transmit error ISR_OVW = 0x10 ; Overflow ISR_CNT = 0x20 ; Counter overflow ISR_RDC = 0x40 ; Remote DMA complete ISR_RST = 0x80 ; reset IRQ_MASK = ISR_PRX ;+ ISR_PTX ;+ ISR_RDC + ISR_PTX + ISR_TXE RSTAT_PRX = 1 shl 0 ; successful recv RSTAT_CRC = 1 shl 1 ; CRC error RSTAT_FAE = 1 shl 2 ; Frame alignment error RSTAT_OVER = 1 shl 3 ; FIFO overrun TXBUF_SIZE = 6 RXBUF_END = 32 PAGE_SIZE = 256 ETH_ZLEN = 60 ETH_FRAME_LEN = 1514 FLAG_PIO = 1 shl 0 FLAG_16BIT = 1 shl 1 VENDOR_NONE = 0 VENDOR_WD = 1 VENDOR_NOVELL = 2 VENDOR_3COM = 3 NE_ASIC = 0x10 NE_RESET = 0x0F ; Used to reset card NE_DATA = 0x00 ; Used to read/write NIC mem MEM_8k = 32 MEM_16k = 64 MEM_32k = 128 ISA_MAX_ADDR = 0x400 section '.flat' code readable align 16 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; proc START ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; align 4 proc START stdcall, state:dword cmp [state], 1 jne .exit .entry: DEBUGF 2,"Registering %s driver\n", my_service stdcall RegService, my_service, service_proc ret .fail: .exit: xor eax, eax ret endp ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; proc SERVICE_PROC ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; align 4 proc service_proc stdcall, ioctl:dword mov edx, [ioctl] mov eax, [IOCTL.io_code] ;------------------------------------------------------ ;--------------- cmp eax, 0 ;SRV_GETVERSION jne @F ;--------------- cmp [IOCTL.out_size], 4 jb .fail mov eax, [IOCTL.output] mov [eax], dword API_VERSION xor eax, eax ret ;------------------------------------------------------ @@: ;--------- cmp eax, 1 ;SRV_HOOK jne @F ;--------- DEBUGF 2,"Checking if device is already listed..\n" mov eax, [IOCTL.input] cmp [IOCTL.inp_size], 3 jb .fail cmp byte [eax], 1 je .pci cmp [IOCTL.inp_size], 4 jb .fail cmp byte [eax], 0 je .isa jmp .fail .pci: ; check if the device is already listed mov esi, device_list mov ecx, [devices] test ecx, ecx jz .firstdevice_pci mov ax, [eax+1] ; get the pci bus and device numbers .nextdevice: mov ebx, [esi] cmp al, byte[device.pci_bus] jne @f cmp ah, byte[device.pci_dev] je .find_devicenum ; Device is already loaded, let's find it's device number @@: add esi, 4 loop .nextdevice .firstdevice_pci: call create_new_struct mov eax, [IOCTL.input] movzx ecx, byte[eax+1] mov [device.pci_bus], ecx movzx ecx, byte[eax+2] mov [device.pci_dev], ecx ; Now, it's time to find the base io addres of the PCI device PCI_find_io ; We've found the io address, find IRQ now PCI_find_irq jmp .hook .isa: mov esi, device_list mov ecx, [devices] test ecx, ecx jz .firstdevice_isa mov al, [eax+3] movzx edi, word [eax+1] .nextdevice_isa: mov ebx, [esi] cmp edi, [device.io_addr] jne .maybenext cmp al, [device.irq_line] je find_device_num .maybenext: add esi, 4 loop .nextdevice_isa .firstdevice_isa: call create_new_struct mov eax, [IOCTL.input] movzx ecx, word [eax+1] mov [device.io_addr], ecx mov cl, [eax+3] mov [device.irq_line], cl .hook: DEBUGF 2,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\ [device.pci_dev]:1,[device.pci_bus]:1,[device.irq_line]:1,[device.io_addr]:4 call probe ; this function will output in eax test eax, eax jnz .err ; If an error occured, exit mov eax, [devices] mov [device_list+4*eax], ebx inc [devices] mov [device.type], NET_TYPE_ETH call NetRegDev cmp eax, -1 jz .err ret ; If the device was already loaded, find the device number and return it in eax .find_devicenum: DEBUGF 1,"Trying to find device number of already registered device\n" call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx ; into a device number in edi mov eax, edi ; Application wants it in eax instead DEBUGF 1,"Kernel says: %u\n", eax ret .err: DEBUGF 1,"Failed, removing device structure\n" stdcall KernelFree, ebx jmp .fail ;------------------------------------------------------ @@: .fail: or eax, -1 ret ;------------------------------------------------------ endp create_new_struct: cmp [devices], MAX_DEVICES jae .fail allocate_and_clear ebx, device.size, .fail ; Allocate the buffer for device structure mov [device.reset], reset mov [device.transmit], transmit mov [device.unload], unload mov [device.name], my_service ret .fail: add esp, 4 ; return to caller of 'hook' or eax, -1 ret find_device_num: DEBUGF 1,"Trying to find device number of already registered device\n" mov ebx, eax call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx ; into a device number in edi mov eax, edi ; Application wants it in eax instead DEBUGF 1,"Kernel says: %u\n", eax ret ;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;; ;; ;; ;; Actual Hardware dependent code starts here ;; ;; ;; ;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;; unload: ; TODO or eax, -1 ret ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; probe: enables the device and clears the rx buffer ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; probe: mov [device.vendor], VENDOR_NONE mov [device.bmem], 0 DEBUGF 2,"Trying 16-bit mode\n" mov [device.flags], FLAG_16BIT + FLAG_PIO mov [device.memsize], MEM_32k mov [device.tx_start], 64 mov [device.rx_start], TXBUF_SIZE + 64 set_io 0 set_io P0_DCR mov al, DCR_WTS + DCR_FT1 + DCR_LS ; word transfer select + out dx, al set_io P0_PSTART mov al, MEM_16k out dx, al set_io P0_PSTOP mov al, MEM_32k out dx, al mov esi, my_service mov di, 16384 mov cx, 14 call PIO_write mov si, 16384 mov cx, 14 sub esp, 16 mov edi, esp call PIO_read mov esi, esp add esp, 16 mov edi, my_service mov ecx, 13 repe cmpsb je ep_set_vendor DEBUGF 2,"16-bit mode failed\n" DEBUGF 2,"Trying 8-bit mode\n" mov [device.flags], FLAG_PIO mov [device.memsize], MEM_16k mov [device.tx_start], 32 mov [device.rx_start], TXBUF_SIZE + 32 set_io NE_ASIC + NE_RESET in al, dx out dx, al in al, 0x84 set_io P0_COMMAND mov al, CMD_RD2 + CMD_STP out dx, al set_io P0_RCR mov al, RCR_MON out dx, al set_io P0_DCR mov al, DCR_FT1 + DCR_LS out dx, al set_io P0_PSTART mov al, MEM_8k out dx, al set_io P0_PSTOP mov al, MEM_16k out dx, al mov esi, my_service mov di, 8192 mov cx, 14 call PIO_write mov si, 8192 mov cx, 14 sub esp, 16 mov edi, esp call PIO_read mov esi, my_service mov edi, esp add esp, 16 mov ecx, 13 repe cmpsb je ep_set_vendor DEBUGF 2,"This is not a valid ne2000 device!\n" or eax, -1 ret ep_set_vendor: DEBUGF 2,"Mode ok\n" cmp [device.io_addr], ISA_MAX_ADDR jbe .isa DEBUGF 2,"Card is using PCI bus\n" mov [device.vendor], VENDOR_NOVELL ;;; FIXME jmp ep_check_have_vendor .isa: DEBUGF 2,"Card is using ISA bus\n" mov [device.vendor], VENDOR_NOVELL ep_check_have_vendor: mov al, [device.vendor] cmp al, VENDOR_NONE ; je exit cmp al, VENDOR_3COM je reset mov eax, [device.bmem] mov [device.rmem], eax ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; reset: Place the chip into a virgin state ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; reset: DEBUGF 2,"Resetting device\n" ; attach int handler movzx eax, [device.irq_line] DEBUGF 1,"Attaching int handler to irq %x\n", eax:1 stdcall AttachIntHandler, eax, int_handler, dword 0 ; Stop card + DMA set_io 0 ; set_io P0_COMMAND mov al, CMD_PS0 + CMD_RDMA_ABORT + CMD_STP out dx, al ; initialize DCR set_io P0_DCR mov al, DCR_FT1 + DCR_LS test [device.flags], FLAG_16BIT jz @f or al, DCR_WTS ; word transfer select @@: out dx, al ; clear remote bytes count set_io P0_RBCR0 xor al, al out dx, al set_io P0_RBCR1 out dx, al ; initialize Receive configuration register (until all init is done) set_io P0_RCR mov al, 0x20 ; monitor mode out dx, al ; transmit configuration register to monitor mode (until all ini is done) set_io P0_TCR mov al, 2 ; internal loopback out dx, al ; clear interupt status set_io P0_ISR mov al, 0xff out dx, al ; clear IRQ mask ;;;;; CHECKME ;;;;; set_io P0_IMR xor al, al out dx, al ; set transmit pointer set_io P0_TPSR mov al, [device.tx_start] out dx, al ; set pagestart pointer 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 2,"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 2,"Transmitting packet, buffer:%x, size:%u\n",esi, ecx DEBUGF 2,"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 2," - 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," - Error!\n" or eax, -1 stdcall KernelFree, [esp+4] ret 8 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; ; Interrupt handler ; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; align 4 int_handler: push ebx esi edi DEBUGF 1,"\n%s int\n", my_service ; 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 2,"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 DEBUGF 2,"WRAP!\n" ; 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 2,"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