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

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

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