WebSVN – Kolibri OS – Blame – /kernel/trunk/network/eth_drv/drivers/rtl8029.inc

Rev	Author	Line No.	Line
261	hidnplayr	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
		3	;; RTL8029.INC ;;
		4	;; ;;
		5	;; Ethernet driver for Menuet OS ;;
		6	;; ;;
		7	;; Version 0.2 31 July 2002 ;;
		8	;; ;;
		9	;; This driver is based on the ns8390 driver from ;;
		10	;; the etherboot 5.0.6 project. The copyright statement is ;;
		11	;; ;;
		12	;; GNU GENERAL PUBLIC LICENSE ;;
		13	;; Version 2, June 1991 ;;
		14	;; ;;
		15	;; remaining parts Copyright 2002 Mike Hibbett, ;;
		16	;; mikeh@oceanfree.net ;;
		17	;; ;;
		18	;; See file COPYING for details ;;
		19	;; ;;
		20	;; While this implementation handles only PCI bus RTL8029 ;;
		21	;; hardware, it can be easily adapted to other NE2000 clone ;;
		22	;; products. I just dont have any to try! ;;
		23	;; ;;
		24	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		25
		26
		27
		28	;********************************************************************
		29	; Interface
		30	; rtl8029_reset
		31	; rtl8029_probe
		32	; rtl8029_poll
		33	; rtl8029_transmit
		34	;
		35	;********************************************************************
		36
		37
		38
		39
		40	;**************************************************************************
		41	; 8390 Register Definitions
		42	;**************************************************************************
		43	D8390_P0_COMMAND equ 0x00
		44	D8390_P0_PSTART equ 0x01
		45	D8390_P0_PSTOP equ 0x02
		46	D8390_P0_BOUND equ 0x03
		47	D8390_P0_TSR equ 0x04
		48	D8390_P0_TPSR equ 0x04
		49	D8390_P0_TBCR0 equ 0x05
		50	D8390_P0_TBCR1 equ 0x06
		51	D8390_P0_ISR equ 0x07
		52	D8390_P0_RSAR0 equ 0x08
		53	D8390_P0_RSAR1 equ 0x09
		54	D8390_P0_RBCR0 equ 0x0A
		55	D8390_P0_RBCR1 equ 0x0B
		56	D8390_P0_RSR equ 0x0C
		57	D8390_P0_RCR equ 0x0C
		58	D8390_P0_TCR equ 0x0D
		59	D8390_P0_DCR equ 0x0E
		60	D8390_P0_IMR equ 0x0F
		61	D8390_P1_COMMAND equ 0x00
		62	D8390_P1_PAR0 equ 0x01
		63	D8390_P1_PAR1 equ 0x02
		64	D8390_P1_PAR2 equ 0x03
		65	D8390_P1_PAR3 equ 0x04
		66	D8390_P1_PAR4 equ 0x05
		67	D8390_P1_PAR5 equ 0x06
		68	D8390_P1_CURR equ 0x07
		69	D8390_P1_MAR0 equ 0x08
		70
		71	D8390_COMMAND_PS0 equ 0x0 ; Page 0 select
		72	D8390_COMMAND_PS1 equ 0x40 ; Page 1 select
		73	D8390_COMMAND_PS2 equ 0x80 ; Page 2 select
		74	D8390_COMMAND_RD2 equ 0x20 ; Remote DMA control
		75	D8390_COMMAND_RD1 equ 0x10
		76	D8390_COMMAND_RD0 equ 0x08
		77	D8390_COMMAND_TXP equ 0x04 ; transmit packet
		78	D8390_COMMAND_STA equ 0x02 ; start
		79	D8390_COMMAND_STP equ 0x01 ; stop
		80
		81	D8390_COMMAND_RD2_STA equ 0x22
		82	D8390_COMMAND_RD2_STP equ 0x21
		83	D8390_COMMAND_RD1_STA equ 0x12
		84	D8390_COMMAND_RD0_STA equ 0x0A
		85	D8390_COMMAND_PS0_RD2_STP equ 0x21
		86	D8390_COMMAND_PS1_RD2_STP equ 0x61
		87	D8390_COMMAND_PS0_RD2_STA equ 0x22
		88	D8390_COMMAND_PS0_TXP_RD2_STA equ 0x26
		89
		90	D8390_RCR_MON equ 0x20 ; monitor mode
		91
		92	D8390_DCR_FT1 equ 0x40
		93	D8390_DCR_LS equ 0x08 ; Loopback select
		94	D8390_DCR_WTS equ 0x01 ; Word transfer select
		95
		96	D8390_DCR_FT1_LS equ 0x48
		97	D8390_DCR_WTS_FT1_LS equ 0x49
		98
		99	D8390_ISR_PRX equ 0x01 ; successful recv
		100	D8390_ISR_PTX equ 0x02 ; successful xmit
		101	D8390_ISR_RXE equ 0x04 ; receive error
		102	D8390_ISR_TXE equ 0x08 ; transmit error
		103	D8390_ISR_OVW equ 0x10 ; Overflow
		104	D8390_ISR_CNT equ 0x20 ; Counter overflow
		105	D8390_ISR_RDC equ 0x40 ; Remote DMA complete
		106	D8390_ISR_RST equ 0x80 ; reset
		107
		108	D8390_RSTAT_PRX equ 0x01 ; successful recv
		109	D8390_RSTAT_CRC equ 0x02 ; CRC error
		110	D8390_RSTAT_FAE equ 0x04 ; Frame alignment error
		111	D8390_RSTAT_OVER equ 0x08 ; FIFO overrun
		112
		113	D8390_TXBUF_SIZE equ 6
		114	D8390_RXBUF_END equ 32
		115	D8390_PAGE_SIZE equ 256
		116
		117	ETH_ALEN equ 6
		118	ETH_HLEN equ 14
		119	ETH_ZLEN equ 60
		120	ETH_FRAME_LEN equ 1514
		121
		122	FLAG_PIO equ 0x01
		123	FLAG_16BIT equ 0x02
		124	ASIC_PIO equ 0
		125
		126	VENDOR_NONE equ 0
		127	VENDOR_WD equ 1
		128	VENDOR_NOVELL equ 2
		129	VENDOR_3COM equ 3
		130
		131	NE_ASIC_OFFSET equ 0x10
		132	NE_RESET equ 0x0F ; Used to reset card
		133	NE_DATA equ 0x00 ; Used to read/write NIC mem
		134
		135	MEM_8192 equ 32
		136	MEM_16384 equ 64
		137	MEM_32768 equ 128
		138
		139	ISA_MAX_ADDR equ 0x400
		140
		141	uglobal
		142	eth_flags: db 0
		143	eth_vendor: db 0
		144	eth_nic_base: dw 0
		145	eth_asic_base: dw 0
		146	eth_memsize: db 0
		147	eth_rx_start: db 0
		148	eth_tx_start: db 0
		149	eth_bmem: dd 0
		150	eth_rmem: dd 0
		151	romdata: db 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
		152	endg
		153
		154	iglobal
		155	test_data: db 'NE*000 memory',0
		156	test_buffer: db ' ',0
		157	endg
		158
		159	uglobal
		160	eth_type: dw 0
		161	pkthdr: db 0,0,0,0 ; status, next, (short) len
		162	pktoff: dw 0
		163	eth_rx_data_ptr: dd 0
		164	eth_tmp_len: dw 0
		165	endg
		166
		167
		168
		169	;***************************************************************************
		170	; Function
		171	; eth_pio_read
		172	;
		173	; Description
		174	; Read a frame from the ethernet card via Programmed I/O
		175	; src in ebx
		176	; cnt in ecx
		177	; dst in edi
		178	;***************************************************************************
		179	eth_pio_read:
		180	mov al, [eth_flags]
		181	and al, FLAG_16BIT
		182	cmp al, 0
		183	je epr_001
		184
		185	inc ecx
		186	and ecx, 0xFFFFFFFE
		187
		188	epr_001:
		189	mov al, D8390_COMMAND_RD2_STA
		190	mov dx, [eth_nic_base]
		191	add dx, D8390_P0_COMMAND
		192	out dx, al
		193
		194	mov al, cl
		195	mov dx, [eth_nic_base]
		196	add dx, D8390_P0_RBCR0
		197	out dx, al
		198
		199	mov al, ch
		200	mov dx, [eth_nic_base]
		201	add dx, D8390_P0_RBCR1
		202	out dx, al
		203
		204	mov al, bl
		205	mov dx, [eth_nic_base]
		206	add dx, D8390_P0_RSAR0
		207	out dx, al
		208
		209	mov al, bh
		210	mov dx, [eth_nic_base]
		211	add dx, D8390_P0_RSAR1
		212	out dx, al
		213
		214	mov al, D8390_COMMAND_RD0_STA
		215	mov dx, [eth_nic_base]
		216	add dx, D8390_P0_COMMAND
		217	out dx, al
		218
		219	mov dx, [eth_asic_base]
		220	add dx, ASIC_PIO
		221
		222	mov al, [eth_flags]
		223	and al, FLAG_16BIT
		224	cmp al, 0
		225	je epr_003
		226
		227	shr ecx, 1
		228
		229	epr_002:
		230	; 2 bytes at a time
		231	in ax, dx
		232	mov [edi], ax
		233	add edi, 2
		234	loop epr_002
		235	ret
		236
		237	epr_003:
		238	; 1 byte at a time
		239	in al, dx
		240	mov [edi], al
		241	inc edi
		242	loop epr_003
		243	ret
		244
		245
		246
		247
		248	;***************************************************************************
		249	; Function
		250	; eth_pio_write
		251	;
		252	; Description
		253	; writes a frame to the ethernet card via Programmed I/O
		254	; dst in ebx
		255	; cnt in ecx
		256	; src in esi
		257	;***************************************************************************
		258	eth_pio_write:
		259	mov al, [eth_flags]
		260	and al, FLAG_16BIT
		261	cmp al, 0
		262	je epw_001
		263
		264	inc ecx
		265	and ecx, 0xFFFFFFFE
		266
		267	epw_001:
		268	mov al, D8390_COMMAND_RD2_STA
		269	mov dx, [eth_nic_base]
		270	add dx, D8390_P0_COMMAND
		271	out dx, al
		272
		273	mov al, D8390_ISR_RDC
		274	mov dx, [eth_nic_base]
		275	add dx, D8390_P0_ISR
		276	out dx, al
		277
		278
		279	mov al, cl
		280	mov dx, [eth_nic_base]
		281	add dx, D8390_P0_RBCR0
		282	out dx, al
		283
		284	mov al, ch
		285	mov dx, [eth_nic_base]
		286	add dx, D8390_P0_RBCR1
		287	out dx, al
		288
		289	mov al, bl
		290	mov dx, [eth_nic_base]
		291	add dx, D8390_P0_RSAR0
		292	out dx, al
		293
		294	mov al, bh
		295	mov dx, [eth_nic_base]
		296	add dx, D8390_P0_RSAR1
		297	out dx, al
		298
		299	mov al, D8390_COMMAND_RD1_STA
		300	mov dx, [eth_nic_base]
		301	add dx, D8390_P0_COMMAND
		302	out dx, al
		303
		304	mov dx, [eth_asic_base]
		305	add dx, ASIC_PIO
		306
		307	mov al, [eth_flags]
		308	and al, FLAG_16BIT
		309	cmp al, 0
		310	je epw_003
		311
		312	shr ecx, 1
		313
		314	epw_002:
		315	; 2 bytes at a time
		316	mov ax, [esi]
		317	add esi, 2
		318	out dx, ax
		319
		320	loop epw_002
		321	jmp epw_004
		322
		323	epw_003:
		324	; 1 byte at a time
		325	mov al, [esi]
		326	inc esi
		327	out dx, al
		328	loop epw_003
		329
		330	epw_004:
		331	mov dx, [eth_nic_base]
		332	add dx, D8390_P0_ISR
		333
		334	epw_005:
		335	in al, dx
		336	and al, D8390_ISR_RDC
		337	cmp al, D8390_ISR_RDC
		338	jne epw_005
		339
		340	ret
		341
		342
		343
		344	;***************************************************************************
		345	; Function
		346	; rtl8029_reset
		347	; Description
		348	; Place the chip (ie, the ethernet card) into a virgin state
		349	; No inputs
		350	; All registers destroyed
		351	;
		352	;***************************************************************************
		353	rtl8029_reset:
		354	mov bx, [eth_nic_base]
		355
		356	mov dx, bx
		357	add dx, D8390_P0_COMMAND
		358	mov al, D8390_COMMAND_PS0_RD2_STP
		359	out dx, al
		360
		361	mov dx, bx
		362	add dx, D8390_P0_DCR
		363	mov al, [eth_flags]
		364	and al, FLAG_16BIT
		365	cmp al, FLAG_16BIT
		366	jne nsr_001
		367
		368	mov al, 0x49
		369	jmp nsr_002
		370
		371	nsr_001:
		372	mov al, 0x48
		373
		374	nsr_002:
		375	out dx, al
		376
		377	xor al, al
		378
		379	mov dx, bx
		380	add dx, D8390_P0_RBCR0
		381	out dx, al
		382
		383	mov dx, bx
		384	add dx, D8390_P0_RBCR1
		385	out dx, al
		386
		387	mov dx, bx
		388	add dx, D8390_P0_RCR
		389	mov al, 0x20
		390	out dx, al
		391
		392	mov dx, bx
		393	add dx, D8390_P0_TCR
		394	mov al, 2
		395	out dx, al
		396
		397	mov dx, bx
		398	add dx, D8390_P0_TPSR
		399	mov al, [eth_tx_start]
		400	out dx, al
		401
		402	mov dx, bx
		403	add dx, D8390_P0_PSTART
		404	mov al, [eth_rx_start]
		405	out dx, al
		406
		407	mov dx, bx
		408	add dx, D8390_P0_PSTOP
		409	mov al, [eth_memsize]
		410	out dx, al
		411
		412	mov dx, bx
		413	add dx, D8390_P0_BOUND
		414	mov al, [eth_memsize]
		415	dec al
		416	out dx, al
		417
		418	mov dx, bx
		419	add dx, D8390_P0_ISR
		420	mov al, 0xff
		421	out dx, al
		422
		423	mov dx, bx
		424	add dx, D8390_P0_IMR
		425	xor al, al
		426	out dx, al
		427
		428	mov dx, bx
		429	add dx, D8390_P0_COMMAND
		430	mov al, D8390_COMMAND_PS1_RD2_STP
		431	out dx, al
		432
		433	mov dx, bx
		434	add dx, D8390_P1_PAR0
		435	mov esi, node_addr
		436	mov ecx, ETH_ALEN
		437
		438	nsr_003:
		439	mov al, [esi]
		440	out dx, al
		441
		442	inc esi
		443	inc dx
		444	loop nsr_003
		445
		446	mov dx, bx
		447	add dx, D8390_P1_MAR0
		448	mov ecx, ETH_ALEN
		449
		450	mov al, 0xff
		451
		452	nsr_004:
		453	out dx, al
		454	inc dx
		455	loop nsr_004
		456
		457	mov dx, bx
		458	add dx, D8390_P1_CURR
		459	mov al, [eth_rx_start]
		460	out dx, al
		461
		462	mov dx, bx
		463	add dx, D8390_P0_COMMAND
		464	mov al, D8390_COMMAND_PS0_RD2_STA
		465	out dx, al
		466
		467	mov dx, bx
		468	add dx, D8390_P0_ISR
		469	mov al, 0xff
		470	out dx, al
		471
		472	mov dx, bx
		473	add dx, D8390_P0_TCR
		474	mov al, 0
		475	out dx, al
		476
		477	mov dx, bx
		478	add dx, D8390_P0_RCR
		479	mov al, 4
		480	out dx, al
		481
		482	ret
		483
		484
		485
		486	;***************************************************************************
		487	; Function
		488	; rtl8029_probe
		489	; Description
		490	; Searches for an ethernet card, enables it and clears the rx buffer
		491	; If a card was found, it enables the ethernet -> TCPIP link
		492	;
		493	;***************************************************************************
		494	rtl8029_probe:
		495	mov eax, [io_addr]
		496	mov [eth_nic_base], ax ; The IO address space is 16 bit only
		497
		498	mov al, VENDOR_NONE
		499	mov [eth_vendor], al
		500
		501	mov al, [eth_vendor]
		502	cmp al, VENDOR_NONE
		503
		504	jne ep_check_have_vendor
		505	xor eax, eax
		506	mov [eth_bmem], eax
		507
		508	mov al, FLAG_PIO
		509	mov [eth_flags], al
		510
		511	mov ax, [eth_nic_base]
		512	add ax, NE_ASIC_OFFSET
		513	mov [eth_asic_base], ax
		514
		515	mov al, MEM_16384
		516	mov [eth_memsize], al
		517
		518	mov al, 32
		519	mov [eth_tx_start], al
		520
		521	add al, D8390_TXBUF_SIZE
		522	mov [eth_rx_start], al
		523
		524	mov dx, [eth_asic_base]
		525	add dx, NE_RESET
		526
		527	in al, dx
		528	out dx, al
		529
		530	in al, 0x84
		531
		532	mov bx, [eth_nic_base]
		533
		534	mov dx, bx
		535	add dx, D8390_P0_COMMAND
		536	mov al, D8390_COMMAND_RD2_STP
		537	out dx, al
		538
		539	mov dx, bx
		540	add dx, D8390_P0_RCR
		541	mov al, D8390_RCR_MON
		542	out dx, al
		543
		544	mov dx, bx
		545	add dx, D8390_P0_DCR
		546	mov al, D8390_DCR_FT1_LS
		547	out dx, al
		548
		549	mov dx, bx
		550	add dx, D8390_P0_PSTART
		551	mov al, MEM_8192
		552	out dx, al
		553
		554	mov dx, bx
		555	add dx, D8390_P0_PSTOP
		556	mov al, MEM_16384
		557	out dx, al
		558
		559	mov esi, test_data
		560	mov ebx, 8192
		561	mov ecx, 14
		562	call eth_pio_write
		563
		564	mov ebx, 8192
		565	mov ecx, 14
		566	mov edi, test_buffer
		567	call eth_pio_read
		568
		569	mov esi, test_buffer
		570	mov edi, test_data
		571	mov ecx, 13
		572	cld
		573	rep cmpsb
		574
		575	je ep_set_vendor
		576
		577	mov al, [eth_flags]
		578	or al, FLAG_16BIT
		579	mov [eth_flags], al
		580
		581	mov al, MEM_32768
		582	mov [eth_memsize], al
		583
		584	mov al, 64
		585	mov [eth_tx_start], al
		586
		587	add al, D8390_TXBUF_SIZE
		588	mov [eth_rx_start], al
		589
		590	mov bx, [eth_nic_base]
		591
		592	mov dx, bx
		593	add dx, D8390_P0_DCR
		594	mov al, D8390_DCR_WTS_FT1_LS
		595	out dx, al
		596
		597	mov dx, bx
		598	add dx, D8390_P0_PSTART
		599	mov al, MEM_16384
		600	out dx, al
		601
		602	mov dx, bx
		603	add dx, D8390_P0_PSTOP
		604	mov al, MEM_32768
		605	out dx, al
		606
		607	mov esi, test_data
		608	mov ebx, 16384
		609	mov ecx, 14
		610	call eth_pio_write
		611
		612	mov ebx, 16384
		613	mov ecx, 14
		614	mov edi, test_buffer
		615	call eth_pio_read
		616
		617	mov esi, test_buffer
		618	mov edi, test_data
		619	mov ecx, 13
		620	cld
		621	rep cmpsb
		622
		623	ep_set_vendor:
		624	; this bit is odd - probably left over from my hacking
		625	mov ax, [eth_nic_base]
		626	cmp ax, 0
		627	je rtl8029_exit
		628	cmp ax, ISA_MAX_ADDR
		629	jbe ep_001
		630	mov al, [eth_flags]
		631	or al, FLAG_16BIT
		632	mov [eth_flags], al
		633
		634	ep_001:
		635	mov al, VENDOR_NOVELL
		636	mov [eth_vendor], al
		637
		638	mov ebx, 0
		639	mov ecx, 16
		640	mov edi, romdata
		641	call eth_pio_read
		642
		643
		644	mov ecx, ETH_ALEN
		645	mov esi, romdata
		646	mov edi, node_addr
		647
		648	mov bl, [eth_flags]
		649	and bl, FLAG_16BIT
		650
		651	ep_002:
		652	mov al, [esi]
		653	mov [edi], al
		654
		655	inc edi
		656	inc esi
		657	cmp bl, FLAG_16BIT
		658	jne ep_003
		659
		660	inc esi
		661
		662	ep_003:
		663	loop ep_002
		664
		665	ep_check_have_vendor:
		666	mov al, [eth_vendor]
		667	cmp al, VENDOR_NONE
		668	je rtl8029_exit
		669
		670	cmp al, VENDOR_3COM
		671	je ep_reset_card
		672
		673	mov eax, [eth_bmem]
		674	mov [eth_rmem], eax
		675
		676	ep_reset_card:
		677	; Reset the card
		678	call rtl8029_reset
		679
		680	; Indicate that we have successfully reset the card
		681	mov eax, [pci_data]
		682	mov [eth_status], eax
		683
		684	rtl8029_exit:
		685	ret
		686
		687
		688
		689	;***************************************************************************
		690	; Function
		691	; rtl8029_poll
		692	;
		693	; Description
		694	; Polls the ethernet card for a received packet
		695	; Received data, if any, ends up in Ether_buffer
		696	;
		697	;***************************************************************************
		698	rtl8029_poll:
		699	mov eax, Ether_buffer
		700	mov [eth_rx_data_ptr], eax
		701
		702	mov bx, [eth_nic_base]
		703
		704	mov dx, bx
		705	add dx, D8390_P0_RSR
		706	in al, dx
		707
		708	and al, D8390_RSTAT_PRX
		709	cmp al, D8390_RSTAT_PRX
		710	jne nsp_exit
		711
		712	mov dx, bx
		713	add dx, D8390_P0_BOUND
		714	in al, dx
		715	inc al
		716
		717	cmp al, [eth_memsize]
		718	jb nsp_001
		719
		720	mov al, [eth_rx_start]
		721
		722	nsp_001:
		723	mov ch, al
		724
		725	mov dx, bx
		726	add dx, D8390_P0_COMMAND
		727	mov al, D8390_COMMAND_PS1
		728	out dx, al
		729
		730	mov dx, bx
		731	add dx, D8390_P1_CURR
		732	in al, dx ; get current page
		733	mov cl, al
		734
		735	mov dx, bx
		736	add dx, D8390_P0_COMMAND
		737	mov al, D8390_COMMAND_PS0
		738	out dx, al
		739
		740	cmp cl, [eth_memsize]
		741	jb nsp_002
		742
		743	mov cl, [eth_rx_start]
		744
		745	nsp_002:
		746	cmp cl, ch
		747	je nsp_exit
		748
		749	xor ax, ax
		750	mov ah, ch
		751
		752	mov [pktoff], ax
		753
		754	mov al, [eth_flags]
		755	and al, FLAG_PIO
		756	cmp al, FLAG_PIO
		757	jne nsp_003
		758
		759	movzx ebx, word [pktoff]
		760	mov edi, pkthdr
		761	mov ecx, 4
		762	call eth_pio_read
		763	jmp nsp_004
		764
		765	nsp_003:
		766	mov edi, [eth_rmem]
		767	movzx eax, word [pktoff]
		768	add edi, eax
		769	mov eax, [edi]
		770	mov [pkthdr], eax
		771
		772	nsp_004:
		773	mov ax, [pktoff]
		774	add ax, 4
		775	mov [pktoff], ax
		776
		777	mov ax, [pkthdr + 2]
		778	sub ax, 4
		779
		780	mov [eth_tmp_len], ax
		781
		782	cmp ax, ETH_ZLEN
		783	jb nsp_exit
		784
		785	cmp ax, ETH_FRAME_LEN
		786	ja nsp_exit
		787
		788	mov al, [pkthdr]
		789	and al, D8390_RSTAT_PRX
		790	cmp al, D8390_RSTAT_PRX
		791	jne nsp_exit
		792
		793	; Right, we can now get the data
		794
		795	mov ax, [eth_tmp_len]
		796	mov [eth_rx_data_len], ax
		797
		798	xor ebx, ebx
		799	mov bh, [eth_memsize]
		800	sub bx, [pktoff]
		801
		802	cmp [eth_tmp_len], bx
		803	jbe nsp_005
		804
		805	mov al, [eth_flags]
		806	and al, FLAG_PIO
		807	cmp al, FLAG_PIO
		808	jne nsp_006
		809
		810	push ebx
		811	mov ecx, ebx
		812	xor ebx, ebx
		813	mov bx, [pktoff]
		814	mov edi, [eth_rx_data_ptr]
		815	call eth_pio_read
		816	pop ebx
		817	jmp nsp_007
		818
		819	nsp_006:
		820	; Not implemented, as we are using PIO mode on this card
		821
		822	nsp_007:
		823	xor ax, ax
		824	mov ah, [eth_rx_start]
		825	mov [pktoff], ax
		826
		827	mov eax, [eth_rx_data_ptr]
		828	add eax, ebx
		829	mov [eth_rx_data_ptr], eax
		830
		831	mov ax, [eth_tmp_len]
		832	sub ax, bx
		833	mov [eth_tmp_len], ax
		834
		835	nsp_005:
		836	mov al, [eth_flags]
		837	and al, FLAG_PIO
		838	cmp al, FLAG_PIO
		839	jne nsp_008
		840
		841	xor ebx, ebx
		842	mov bx, [pktoff]
		843	xor ecx, ecx
		844	mov cx, [eth_tmp_len]
		845	mov edi, [eth_rx_data_ptr]
		846	call eth_pio_read
		847	jmp nsp_009
		848
		849	nsp_008:
		850	; Not implemented, as we are using PIO mode on this card
		851
		852	nsp_009:
		853	mov al, [pkthdr+1]
		854	cmp al, [eth_rx_start]
		855	jne nsp_010
		856
		857	mov al, [eth_memsize]
		858
		859	nsp_010:
		860	mov dx, [eth_nic_base]
		861	add dx, D8390_P0_BOUND
		862	dec al
		863	out dx, al
		864
		865	nsp_exit:
		866	ret
		867
		868
		869
		870	;***************************************************************************
		871	; Function
		872	; rtl8029_transmit
		873	;
		874	; Description
		875	; Transmits a packet of data via the ethernet card
		876	; Pointer to 48 bit destination address in edi
		877	; Type of packet in bx
		878	; size of packet in ecx
		879	; pointer to packet data in esi
		880	;
		881	;***************************************************************************
		882	rtl8029_transmit:
		883	mov [eth_type], bx
		884
		885	pusha
		886
		887	mov esi, edi
		888	xor bx, bx
		889	mov bh, [eth_tx_start]
		890	mov ecx, ETH_ALEN
		891	call eth_pio_write
		892
		893	mov esi, node_addr
		894	xor bx, bx
		895	mov bh, [eth_tx_start]
		896	add bx, ETH_ALEN
		897	mov ecx, ETH_ALEN
		898	call eth_pio_write
		899
		900	mov esi, eth_type
		901	xor bx, bx
		902	mov bh, [eth_tx_start]
		903	add bx, ETH_ALEN
		904	add bx, ETH_ALEN
		905	mov ecx, 2
		906	call eth_pio_write
		907
		908	popa
		909
		910	xor bx, bx
		911	mov bh, [eth_tx_start]
		912	add bx, ETH_HLEN
		913	push ecx
		914	call eth_pio_write
		915	pop ecx
		916
		917	add ecx, ETH_HLEN
		918	cmp ecx, ETH_ZLEN
		919	jae nst_001
		920
		921	mov ecx, ETH_ZLEN
		922
		923	nst_001:
		924	push ecx
		925
		926	mov bx, [eth_nic_base]
		927
		928	mov dx, bx
		929	add dx, D8390_P0_COMMAND
		930	mov al, D8390_COMMAND_PS0_RD2_STA
		931	out dx, al
		932
		933	mov dx, bx
		934	add dx, D8390_P0_TPSR
		935	mov al, [eth_tx_start]
		936	out dx, al
		937
		938	pop ecx
		939
		940	mov dx, bx
		941	add dx, D8390_P0_TBCR0
		942	mov al, cl
		943	out dx, al
		944
		945	mov dx, bx
		946	add dx, D8390_P0_TBCR1
		947	mov al, ch
		948	out dx, al
		949
		950	mov dx, bx
		951	add dx, D8390_P0_COMMAND
		952	mov al, D8390_COMMAND_PS0_TXP_RD2_STA
		953	out dx, al
		954
		955	ret

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(root)/kernel/trunk/network/eth_drv/drivers/rtl8029.inc @ 425 – Rev 261