Subversion Repositories Kolibri OS

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;                                                                 ;;

;; Copyright (C) KolibriOS team 2004-2009. All rights reserved.    ;;

;; Distributed under terms of the GNU General Public License       ;;

;;                                                                 ;;

;; RTL8029/ne2000 driver for KolibriOS                             ;;

;;                                                                 ;;

;;    Written by hidnplayr@kolibrios.org                           ;;

;;     with help from CleverMouse                                  ;;

;;                                                                 ;;

;;          GNU GENERAL PUBLIC LICENSE                             ;;

;;             Version 2, June 1991                                ;;

;;                                                                 ;;

;; current status (september 2009) - UNSTABLE                      ;;

;;                                                                 ;;

;; based on RTL8029.asm driver for menuetos                        ;;

;; and realtek8029.asm for SolarOS by Eugen Brasoveanu             ;;

;;                                                                 ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;$Revision: 1492 $

format MS COFF

API_VERSION	equ 0x01000100

DEBUG equ 1

__DEBUG__ equ 1

__DEBUG_LEVEL__ equ 1

include 'proc32.inc'

include 'imports.inc'

include 'fdo.inc'

include 'netdrv.inc'

OS_BASE 	equ 0

new_app_base	equ 0x60400000

PROC_BASE	equ OS_BASE+0x0080000

virtual at ebx

       device:

       ETH_DEVICE

      .io_addr		dd ?

      .irq_line 	db ?

      .pci_bus		db ?

      .pci_dev		db ?

      .flags		db ?

      .vendor		db ?

      .asic_base	dw ?

      .memsize		db ?

      .rx_start 	db ?

      .tx_start 	db ?

      .bmem		dd ?

      .rmem		dd ?

      .romdata		rb 16

      .size = $ - device

end virtual

public START

public service_proc

public version

	MAX_DEVICES		  equ 16	  ; Max number of devices this driver may handle

	P0_PSTART		  equ 0x01

	P0_PSTOP		  equ 0x02

	P0_BOUND		  equ 0x03

	P0_TSR			  equ 0x04

	P0_TPSR 		  equ 0x04

	P0_TBCR0		  equ 0x05

	P0_TBCR1		  equ 0x06

	P0_ISR			  equ 0x07

	P0_RSAR0		  equ 0x08

	P0_RSAR1		  equ 0x09

	P0_RBCR0		  equ 0x0A

	P0_RBCR1		  equ 0x0B

	P0_RSR			  equ 0x0C

	P0_RCR			  equ 0x0C

	P0_TCR			  equ 0x0D

	P0_DCR			  equ 0x0E

	P0_IMR			  equ 0x0F

	P1_PAR0 		  equ 0x01

	P1_PAR1 		  equ 0x02

	P1_PAR2 		  equ 0x03

	P1_PAR3 		  equ 0x04

	P1_PAR4 		  equ 0x05

	P1_PAR5 		  equ 0x06

	P1_CURR 		  equ 0x07

	P1_MAR0 		  equ 0x08

	CMD_PS0 		  equ 0x00	  ;  Page 0 select

	CMD_PS1 		  equ 0x40	  ;  Page 1 select

	CMD_PS2 		  equ 0x80	  ;  Page 2 select

	CMD_RD2 		  equ 0x20	  ;  Remote DMA control

	CMD_RD1 		  equ 0x10

	CMD_RD0 		  equ 0x08

	CMD_TXP 		  equ 0x04	  ;  transmit packet

	CMD_STA 		  equ 0x02	  ;  start

	CMD_STP 		  equ 0x01	  ;  stop

	RCR_MON 		  equ 0x20	  ;  monitor mode

	DCR_FT1 		  equ 0x40

	DCR_LS			  equ 0x08	  ;  Loopback select

	DCR_WTS 		  equ 0x01	  ;  Word transfer select

	ISR_PRX 		  equ 0x01	  ;  successful recv

	ISR_PTX 		  equ 0x02	  ;  successful xmit

	ISR_RXE 		  equ 0x04	  ;  receive error

	ISR_TXE 		  equ 0x08	  ;  transmit error

	ISR_OVW 		  equ 0x10	  ;  Overflow

	ISR_CNT 		  equ 0x20	  ;  Counter overflow

	ISR_RDC 		  equ 0x40	  ;  Remote DMA complete

	ISR_RST 		  equ 0x80	  ;  reset

	IRQ_MASK		  equ ISR_PRX ; + ISR_PTX + ISR_TXE

	RSTAT_PRX		  equ 0x01	  ;  successful recv

	RSTAT_CRC		  equ 0x02	  ;  CRC error

	RSTAT_FAE		  equ 0x04	  ;  Frame alignment error

	RSTAT_OVER		  equ 0x08	  ;  FIFO overrun

	TXBUF_SIZE		  equ 6

	RXBUF_END		  equ 32

	PAGE_SIZE		  equ 256

	ETH_ALEN		  equ 6

	ETH_HLEN		  equ 14

	ETH_ZLEN		  equ 60

	ETH_FRAME_LEN		  equ 1514

	FLAG_PIO		  equ 0x01

	FLAG_16BIT		  equ 0x02

	ASIC_PIO		  equ 0

	VENDOR_NONE		  equ 0

	VENDOR_WD		  equ 1

	VENDOR_NOVELL		  equ 2

	VENDOR_3COM		  equ 3

	NE_ASIC_OFFSET		  equ 0x10

	NE_RESET		  equ 0x0F	  ; Used to reset card

	NE_DATA 		  equ 0x00	  ; Used to read/write NIC mem

	MEM_8192		  equ 32

	MEM_16384		  equ 64

	MEM_32768		  equ 128

	ISA_MAX_ADDR		  equ 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 rtl8029 service \n"

	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

	jl	.fail

	mov	eax, [IOCTL.output]

	mov	[eax], dword API_VERSION

	xor	eax, eax

	ret	4

;------------------------------------------------------

  @@:		       ;---------

	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

	jl	.fail

	cmp	byte [eax], 1

	je	.pci

	cmp	[IOCTL.inp_size], 4

	jl	.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     eax, [IOCTL.input]                      ; get the pci bus and device numbers

	mov	ax , [eax+1]				;

  .nextdevice:

	mov	ebx, [esi]

	cmp	ax , word [device.pci_bus]		; compare with pci and device num in device list (notice the usage of word instead of byte)

	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]

	mov	cl , [eax+1]

	mov	[device.pci_bus], cl

	mov	cl , [eax+2]

	mov	[device.pci_dev], cl

; Now, it's time to find the base io addres of the PCI device

	find_io [device.pci_bus], [device.pci_dev], [device.io_addr]

; We've found the io address, find IRQ now

	find_irq [device.pci_bus], [device.pci_dev], [device.irq_line]

	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]

	call	EthRegDev				     ; Register the device to kernel (ebx points to device struct)

	cmp	eax, -1

	jz	.err

	ret	4

; 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"

	mov	ebx, eax

	call	EthStruc2Dev						; 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	4

;------------------------------------------------------

endp

create_new_struct:

	cmp	[DEVICES], MAX_DEVICES

	jge	.fail

	push	edx

	stdcall KernelAlloc, device.size

	pop	edx

	test	eax, eax

	jz	.fail

	mov	ebx, eax

	mov	[device.reset], reset

	mov	[device.transmit], transmit

	mov	[device.get_MAC], read_mac

	mov	[device.set_MAC], write_mac

	mov	[device.unload], unload

	mov	[device.name], my_service

	ret

.fail:

	add	esp, 4

	or	eax, -1

	ret

find_device_num:

	DEBUGF	1,"Trying to find device number of already registered device\n"

	mov	ebx, eax

	call	EthStruc2Dev						; 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

	mov	eax,[device.io_addr]

	add	eax, NE_ASIC_OFFSET

	mov	[device.asic_base], ax

	DEBUGF	2,"Trying 16-bit mode\n"

	or	[device.flags], FLAG_16BIT or FLAG_PIO

	mov	[device.memsize], MEM_32768

	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

	out	dx, al

	set_io	P0_PSTART

	mov	al, MEM_16384

	out	dx, al

	set_io	P0_PSTOP

	mov	al, MEM_32768

	out	dx, al

	mov	esi, test_data

	mov	di, 16384

	mov	cx, 14

	call	eth_pio_write

	mov	si, 16384

	mov	cx, 14

	lea	edi, [device.romdata]

	call	eth_pio_read

	lea	esi, [device.romdata]

	mov	edi, test_data

	mov	ecx, 13

     repz    cmpsb

     jz      ep_set_vendor

	DEBUGF	2,"Trying 8-bit mode\n"

	mov	[device.flags], FLAG_PIO

	mov	[device.memsize], MEM_16384

	mov	[device.tx_start], 32

	mov	[device.rx_start], TXBUF_SIZE + 32

	mov	dx, [device.asic_base]

	add	dx, NE_RESET

	in	al, dx

	out	dx, al

	in	al, 0x84

	set_io	0

	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_8192

	out	dx, al

	set_io	P0_PSTOP

	mov	al, MEM_16384

	out	dx, al

	mov	esi, test_data

	mov	di, 8192

	mov	cx, 14

	call	eth_pio_write

	mov	si, 8192

	mov	cx, 14

	lea	edi, [device.romdata]

	call	eth_pio_read

	mov	esi, test_data

	lea	edi, [device.romdata]

	mov	ecx, 13

    repz      cmpsb

    jz	      ep_set_vendor

	DEBUGF	2,"This is not a valid ne2000 device!\n"

	or	eax, -1

	ret

ep_set_vendor:

	cmp	[device.io_addr], ISA_MAX_ADDR

	jbe	ep_001

	DEBUGF	2,"Card is using PCI bus\n"

;        or      [flags], FLAG_16BIT

ep_001:

	mov	[device.vendor], VENDOR_NOVELL

ep_check_have_vendor:

	mov	al, [device.vendor]

	cmp	al, VENDOR_NONE

;        je      rtl8029_exit

	cmp	al, VENDOR_3COM

	je	reset

	mov	eax, [device.bmem]

	mov	[device.rmem], eax

	call	read_mac

	push	.hack

	sub	esp, 6

	mov	edi, esp

	lea	esi, [device.mac]

	movsd

	movsw

	jmp	write_mac

       .hack:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;

;;   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 mode

	set_io	0

	mov	al, CMD_PS0 + CMD_RD2 + CMD_STP

	out	dx, al

	set_io	P0_DCR

	test	[device.flags], FLAG_16BIT

	jz	nsr_001

	mov	al, 0x49

	jmp	nsr_002

nsr_001:

	mov	al, 0x48

nsr_002:

	out	dx, al

;clear remote bytes count

	set_io	0

	xor	al, al

	set_io	P0_RBCR0

	out	dx, al

	set_io	P0_RBCR1

	out	dx, al

;initialize Receive configuration register

	set_io	P0_RCR

	mov	al, 0x20	; monitor mode

	out	dx, al

; transmit configuration register

	set_io	P0_TCR

	mov	al, 2		; internal loopback

	out	dx, al

; transmit page stuff

	set_io	P0_TPSR

	mov	al, [device.tx_start]

	out	dx, al

; set receive control register ;;;;

	set_io	P0_RCR

	mov	al, 4		; accept broadcast

	out	dx, al

; pagestart

	set_io	P0_PSTART

	mov	al, [device.rx_start]

	out	dx, al

; pagestop

	set_io	P0_PSTOP

	mov	al, [device.memsize]

	out	dx, al

; page boundary

	set_io	P0_BOUND

	mov	al, [device.memsize]

	dec	al

	out	dx, al

;;clear IRQ mask

;        set_io  P0_IMR

;        xor     al, al

;        out     dx, al

	set_io	0

	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	0

	mov	al, CMD_PS0 + CMD_RD2 + CMD_STA ; go to page 0

	out	dx, al

; Read MAC address

	call	read_mac

; clear interupt status

	set_io	0

	set_io	P0_ISR

	mov	al, 0xff

	out	dx, al

; set IRQ mask

	set_io	P0_IMR

	mov	al, IRQ_MASK

	out	dx, al

;; start mode

;        set_io  0

;        mov     al, CMD_STA

;        out     dx, al

; clear transmit control register

	set_io	P0_TCR

	mov	al, 0		; no loopback

	out	dx, al

; clear packet/byte counters

	xor	eax, eax

	lea	edi, [device.bytes_tx]

	mov	ecx, 6

	rep	stosd

; Indicate that we have successfully reset the card

	DEBUGF	2,"Done!\n"

	ret

;***************************************************************************

;   Function

;      transmit

; buffer in [esp+4], size in [esp+8], pointer to device struct in ebx

;***************************************************************************

; TODO: use a RING-buffer

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

	jg	.err ; packet is too long

	cmp	ecx, 60

	jl	.err ; packet is too short

	movzx	edi, [device.tx_start]

	shl	edi, 8

	push	cx

	call	eth_pio_write

	pop	cx

	set_io	0

	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	0

	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

.finish:

	xor	eax, eax

	ret

.err:

	or	eax, -1

	ret

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;

; Interrupt handler

;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

align 4

int_handler:

	DEBUGF	2,"IRQ %x ",eax:2

; find pointer of device wich made INT occur

	mov	esi, DEVICE_LIST

	mov	ecx, [DEVICES]

.nextdevice:

	mov	ebx, [esi]

	set_io	0

	set_io	P0_ISR

	in	al, dx

	DEBUGF	2,"isr %x ",eax:2

	test	al, ISR_PRX    ; packet received ok ?

	jnz	.rx

	add	esi, 4

	loop	.nextdevice

	ret

; looks like we've found a device wich received a packet..

.rx:

	stdcall KernelAlloc, ETH_FRAME_LEN  ; size doesnt really matter as packet size is smaller then kernel's page size

	test	eax, eax

	jz	.fail_2

;--------------------------------------

; allocate memory for temp variables in stack

	sub	esp, 14+8

	eth_type	equ esp

	pkthdr		equ esp + 2

	pktoff		equ esp + 6

	eth_rx_data_ptr equ esp + 8

	eth_tmp_len	equ esp + 12

; These will be used by eth_receiver when the packet gets there

	pointer 	equ esp + 14

	size		equ esp + 18

;-------------------------------------

	mov	[pointer], eax

	mov	[eth_rx_data_ptr], eax

	set_io	P0_BOUND

	in	al, dx

	inc	al

	cmp	al, [device.memsize]

	jb	.nsp_001

	mov	al, [device.rx_start]

.nsp_001:

	mov	ch, al

	set_io	0

	mov	al, CMD_PS1

	out	dx, al

	set_io	P1_CURR

	in	al, dx		     ; get current page

	mov	cl, al

	set_io	0

	mov	al, CMD_PS0

	out	dx, al

	cmp	cl, [device.memsize]

	jb	.nsp_002

	mov	cl, [device.rx_start]

.nsp_002:

	cmp	cl, ch

	je	.fail

	xor	ax, ax

	mov	ah, ch

	mov	[pktoff], ax

	mov	al, [device.flags]

	test	al, FLAG_PIO

	jz	.nsp_003

	mov	si, word [pktoff]

	lea	edi, [pkthdr]

	mov	cx, 4

	call	eth_pio_read

	jmp	.nsp_004

.nsp_003:

	mov	edi, [device.rmem]

	movzx	eax, word [pktoff]

	add	edi, eax

	mov	eax, [edi]

	mov	[pkthdr], eax

.nsp_004:

	add	word[pktoff] , 4

	xor	eax, eax

	mov	ax , [pkthdr + 2]

	sub	ax , 4

	DEBUGF	2,"Received %u bytes\n",eax

	add	dword [device.bytes_rx], eax  ; Update stats

	adc	dword [device.bytes_rx + 4], 0

	inc	dword [device.packets_rx]     ;

	mov	[eth_tmp_len], ax

	mov	dword[size], eax

	cmp	ax, ETH_ZLEN

	jb	.fail

	cmp	ax , ETH_FRAME_LEN

	ja	.fail

	mov	al , [pkthdr]

	test	al , RSTAT_PRX

	jz	.fail

   ; Right, we can now get the data

	movzx	esi, [device.memsize]

	sub	si , [pktoff]

	cmp	[eth_tmp_len], si

	jbe	.nsp_005

	DEBUGF	2,"WRAP!\n"

	mov	al , [device.flags]

	test	al , FLAG_PIO

	jz	.nsp_006

	push	esi

	mov	cx , si

	mov	si , [pktoff+4]

	mov	edi, [eth_rx_data_ptr+4]

	call	eth_pio_read

	pop	esi

	jmp	.nsp_007

.nsp_006:

	DEBUGF	2,"PIO mode not supported by HW!\n"

   ; Not implemented, as we are using PIO mode on this card

.nsp_007:

	xor	al, al

	mov	ah, [device.rx_start]

	mov	[pktoff], ax

	add	[eth_rx_data_ptr], esi

	sub	[eth_tmp_len], si

.nsp_005:

	test	[device.flags], FLAG_PIO

	jz	.nsp_008

	movzx	esi, word [pktoff]

	movzx	ecx, word [eth_tmp_len]

	mov	edi, [eth_rx_data_ptr]

	call	eth_pio_read

	jmp	.nsp_009

.nsp_008:

	DEBUGF	2,"PIO mode not supported by HW!\n"

   ; Not implemented, as we are using PIO mode on this card

.nsp_009:

	mov	al, [pkthdr+1]

	cmp	al, [device.rx_start]

	jne	.nsp_010

	mov	al, [device.memsize]

.nsp_010:

	set_io	0

	set_io	P0_BOUND

	dec	al

	out	dx, al

	add	esp, 14

	jmp	EthReceiver	; send it to the kernel

.fail:

	add	esp, 14+8

.fail_2:

	DEBUGF	2,"done\n"

ret

;;;;;;;;;;;;;;;;;;;;;;;

;;                   ;;

;; Write MAC address ;;

;;                   ;;

;;;;;;;;;;;;;;;;;;;;;;;

align 4

write_mac:	; in: mac on stack (6 bytes)

	DEBUGF	1,"Writing MAC: "

	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: "

;        set_io  0

;        mov     al, CMD_PS1; + CMD_RD2 + CMD_STP ; select page 1

;        out     dx, al

;

;        set_io  P1_PAR0

;        lea     edi, [mac]

;

;        mov     cx, 6

; .loop:

;        in      al, dx

;        stosb

;        inc     dx

;        loopw   .loop

;

;        set_io  0

;        mov     al, CMD_PS0; + CMD_RD2 + CMD_STA  ; set page back to 0

;        out     dx, al

	mov	si, 0

	mov	cx, 16

	lea	edi, [device.romdata]

	call	eth_pio_read

	lea	esi, [device.romdata]

	lea	edi, [device.mac]

	mov	ecx, 6

  .loop:

	movsb

	test	[device.flags], FLAG_16BIT

	jz	.8bit

	inc	esi

  .8bit:

	loop	.loop

	DEBUGF	1,"%x-%x-%x-%x-%x-%x\n",[edi-6]:2,[edi-5]:2,[edi-4]:2,[edi-3]:2,[edi-2]:2,[edi-1]:2

	ret

;***************************************************************************

;   Function

;      eth_pio_read

;

;   Description

;       Read a frame from the ethernet card via Programmed I/O

;      src in si

;      cnt in cx

;       dst in edi

;***************************************************************************

eth_pio_read:

	DEBUGF	1,"Eth PIO Read from %x to %x, %u bytes ",si,edi,cx

	set_io	0

	mov	al, CMD_RD2 + CMD_STA

	out	dx, al

	mov	al, cl

	set_io	P0_RBCR0

	out	dx, al

	mov	al, ch

	set_io	P0_RBCR1

	out	dx, al

	mov	ax, si

	set_io	P0_RSAR0

	out	dx, al

	shr	ax, 8

	set_io	P0_RSAR1

	out	dx, al

	mov	al, CMD_RD0 + CMD_STA

	set_io	0

	out	dx, al

	mov	dx, [device.asic_base]

	test	[device.flags], FLAG_16BIT

	jz	epr_003

	DEBUGF	1,"in 16-bits mode"

	shr	cx, 1	; note that if the number was odd, carry flag will be set

	pushf		; save the flags for later

epr_002:

	in	ax, dx

	stosw

	loopw	epr_002

	inc	cx

	popf

	jnc	epr_004