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

Rev	Author	Line No.	Line
2288	clevermous	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
2455	mario79	3	;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
2288	clevermous	4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;; RTL8029.INC ;;
		7	;; ;;
		8	;; Ethernet driver for Menuet OS ;;
		9	;; ;;
		10	;; Version 0.2 31 July 2002 ;;
		11	;; ;;
		12	;; This driver is based on the ns8390 driver from ;;
		13	;; the etherboot 5.0.6 project. The copyright statement is ;;
		14	;; ;;
		15	;; GNU GENERAL PUBLIC LICENSE ;;
		16	;; Version 2, June 1991 ;;
		17	;; ;;
		18	;; remaining parts Copyright 2002 Mike Hibbett, ;;
		19	;; mikeh@oceanfree.net ;;
		20	;; ;;
		21	;; See file COPYING for details ;;
		22	;; ;;
		23	;; While this implementation handles only PCI bus RTL8029 ;;
		24	;; hardware, it can be easily adapted to other NE2000 clone ;;
		25	;; products. I just dont have any to try! ;;
		26	;; ;;
		27	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		28
		29	$Revision: 2455 $
		30
		31
		32	;********************************************************************
		33	; Interface
		34	; rtl8029_reset
		35	; rtl8029_probe
		36	; rtl8029_poll
		37	; rtl8029_transmit
		38	;
		39	;********************************************************************
		40
		41
		42
		43
		44	;**************************************************************************
		45	; 8390 Register Definitions
		46	;**************************************************************************
		47	D8390_P0_COMMAND equ 0x00
		48	D8390_P0_PSTART equ 0x01
		49	D8390_P0_PSTOP equ 0x02
		50	D8390_P0_BOUND equ 0x03
		51	D8390_P0_TSR equ 0x04
		52	D8390_P0_TPSR equ 0x04
		53	D8390_P0_TBCR0 equ 0x05
		54	D8390_P0_TBCR1 equ 0x06
		55	D8390_P0_ISR equ 0x07
		56	D8390_P0_RSAR0 equ 0x08
		57	D8390_P0_RSAR1 equ 0x09
		58	D8390_P0_RBCR0 equ 0x0A
		59	D8390_P0_RBCR1 equ 0x0B
		60	D8390_P0_RSR equ 0x0C
		61	D8390_P0_RCR equ 0x0C
		62	D8390_P0_TCR equ 0x0D
		63	D8390_P0_DCR equ 0x0E
		64	D8390_P0_IMR equ 0x0F
		65	D8390_P1_COMMAND equ 0x00
		66	D8390_P1_PAR0 equ 0x01
		67	D8390_P1_PAR1 equ 0x02
		68	D8390_P1_PAR2 equ 0x03
		69	D8390_P1_PAR3 equ 0x04
		70	D8390_P1_PAR4 equ 0x05
		71	D8390_P1_PAR5 equ 0x06
		72	D8390_P1_CURR equ 0x07
		73	D8390_P1_MAR0 equ 0x08
		74
		75	D8390_COMMAND_PS0 equ 0x0 ; Page 0 select
		76	D8390_COMMAND_PS1 equ 0x40 ; Page 1 select
		77	D8390_COMMAND_PS2 equ 0x80 ; Page 2 select
		78	D8390_COMMAND_RD2 equ 0x20 ; Remote DMA control
		79	D8390_COMMAND_RD1 equ 0x10
		80	D8390_COMMAND_RD0 equ 0x08
		81	D8390_COMMAND_TXP equ 0x04 ; transmit packet
		82	D8390_COMMAND_STA equ 0x02 ; start
		83	D8390_COMMAND_STP equ 0x01 ; stop
		84
		85	D8390_COMMAND_RD2_STA equ 0x22
		86	D8390_COMMAND_RD2_STP equ 0x21
		87	D8390_COMMAND_RD1_STA equ 0x12
		88	D8390_COMMAND_RD0_STA equ 0x0A
		89	D8390_COMMAND_PS0_RD2_STP equ 0x21
		90	D8390_COMMAND_PS1_RD2_STP equ 0x61
		91	D8390_COMMAND_PS0_RD2_STA equ 0x22
		92	D8390_COMMAND_PS0_TXP_RD2_STA equ 0x26
		93
		94	D8390_RCR_MON equ 0x20 ; monitor mode
		95
		96	D8390_DCR_FT1 equ 0x40
		97	D8390_DCR_LS equ 0x08 ; Loopback select
		98	D8390_DCR_WTS equ 0x01 ; Word transfer select
		99
		100	D8390_DCR_FT1_LS equ 0x48
		101	D8390_DCR_WTS_FT1_LS equ 0x49
		102
		103	D8390_ISR_PRX equ 0x01 ; successful recv
		104	D8390_ISR_PTX equ 0x02 ; successful xmit
		105	D8390_ISR_RXE equ 0x04 ; receive error
		106	D8390_ISR_TXE equ 0x08 ; transmit error
		107	D8390_ISR_OVW equ 0x10 ; Overflow
		108	D8390_ISR_CNT equ 0x20 ; Counter overflow
		109	D8390_ISR_RDC equ 0x40 ; Remote DMA complete
		110	D8390_ISR_RST equ 0x80 ; reset
		111
		112	D8390_RSTAT_PRX equ 0x01 ; successful recv
		113	D8390_RSTAT_CRC equ 0x02 ; CRC error
		114	D8390_RSTAT_FAE equ 0x04 ; Frame alignment error
		115	D8390_RSTAT_OVER equ 0x08 ; FIFO overrun
		116
		117	D8390_TXBUF_SIZE equ 6
		118	D8390_RXBUF_END equ 32
		119	D8390_PAGE_SIZE equ 256
		120
		121	ETH_ALEN equ 6
		122	ETH_HLEN equ 14
		123	ETH_ZLEN equ 60
		124	ETH_FRAME_LEN equ 1514
		125
		126	FLAG_PIO equ 0x01
		127	FLAG_16BIT equ 0x02
		128	ASIC_PIO equ 0
		129
		130	VENDOR_NONE equ 0
		131	VENDOR_WD equ 1
		132	VENDOR_NOVELL equ 2
		133	VENDOR_3COM equ 3
		134
		135	NE_ASIC_OFFSET equ 0x10
		136	NE_RESET equ 0x0F ; Used to reset card
		137	NE_DATA equ 0x00 ; Used to read/write NIC mem
		138
		139	MEM_8192 equ 32
		140	MEM_16384 equ 64
		141	MEM_32768 equ 128
		142
		143	ISA_MAX_ADDR equ 0x400
		144
		145	uglobal
		146	eth_flags:
		147	db 0
		148	eth_vendor:
		149	db 0
		150	eth_nic_base:
		151	dw 0
		152	eth_asic_base:
		153	dw 0
		154	eth_memsize:
		155	db 0
		156	eth_rx_start:
		157	db 0
		158	eth_tx_start:
		159	db 0
		160	eth_bmem:
		161	dd 0
		162	eth_rmem:
		163	dd 0
		164	romdata:
		165	db 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
		166	endg
		167
		168	iglobal
		169	test_data:
		170	db 'NE*000 memory',0
		171	test_buffer:
		172	db ' ',0
		173	endg
		174
		175	uglobal
		176	eth_type:
		177	dw 0
		178	pkthdr:
		179	db 0,0,0,0 ; status, next, (short) len
		180	pktoff:
		181	dw 0
		182	eth_rx_data_ptr:
		183	dd 0
		184	eth_tmp_len:
		185	dw 0
		186	endg
		187
		188
		189
		190	;***************************************************************************
		191	; Function
		192	; eth_pio_read
		193	;
		194	; Description
		195	; Read a frame from the ethernet card via Programmed I/O
		196	; src in ebx
		197	; cnt in ecx
		198	; dst in edi
		199	;***************************************************************************
		200	eth_pio_read:
		201	mov al, [eth_flags]
		202	and al, FLAG_16BIT
		203	cmp al, 0
		204	je epr_001
		205
		206	inc ecx
		207	and ecx, 0xFFFFFFFE
		208
		209	epr_001:
		210	mov al, D8390_COMMAND_RD2_STA
		211	mov dx, [eth_nic_base]
		212	add dx, D8390_P0_COMMAND
		213	out dx, al
		214
		215	mov al, cl
		216	mov dx, [eth_nic_base]
		217	add dx, D8390_P0_RBCR0
		218	out dx, al
		219
		220	mov al, ch
		221	mov dx, [eth_nic_base]
		222	add dx, D8390_P0_RBCR1
		223	out dx, al
		224
		225	mov al, bl
		226	mov dx, [eth_nic_base]
		227	add dx, D8390_P0_RSAR0
		228	out dx, al
		229
		230	mov al, bh
		231	mov dx, [eth_nic_base]
		232	add dx, D8390_P0_RSAR1
		233	out dx, al
		234
		235	mov al, D8390_COMMAND_RD0_STA
		236	mov dx, [eth_nic_base]
		237	add dx, D8390_P0_COMMAND
		238	out dx, al
		239
		240	mov dx, [eth_asic_base]
		241	add dx, ASIC_PIO
		242
		243	mov al, [eth_flags]
		244	and al, FLAG_16BIT
		245	cmp al, 0
		246	je epr_003
		247
		248	shr ecx, 1
		249
		250	epr_002:
		251	; 2 bytes at a time
		252	in ax, dx
		253	mov [edi], ax
		254	add edi, 2
		255	loop epr_002
		256	ret
		257
		258	epr_003:
		259	; 1 byte at a time
		260	in al, dx
		261	mov [edi], al
		262	inc edi
		263	loop epr_003
		264	ret
		265
		266
		267
		268
		269	;***************************************************************************
		270	; Function
		271	; eth_pio_write
		272	;
		273	; Description
		274	; writes a frame to the ethernet card via Programmed I/O
		275	; dst in ebx
		276	; cnt in ecx
		277	; src in esi
		278	;***************************************************************************
		279	eth_pio_write:
		280	mov al, [eth_flags]
		281	and al, FLAG_16BIT
		282	cmp al, 0
		283	je epw_001
		284
		285	inc ecx
		286	and ecx, 0xFFFFFFFE
		287
		288	epw_001:
		289	mov al, D8390_COMMAND_RD2_STA
		290	mov dx, [eth_nic_base]
		291	add dx, D8390_P0_COMMAND
		292	out dx, al
		293
		294	mov al, D8390_ISR_RDC
		295	mov dx, [eth_nic_base]
		296	add dx, D8390_P0_ISR
		297	out dx, al
		298
		299
		300	mov al, cl
		301	mov dx, [eth_nic_base]
		302	add dx, D8390_P0_RBCR0
		303	out dx, al
		304
		305	mov al, ch
		306	mov dx, [eth_nic_base]
		307	add dx, D8390_P0_RBCR1
		308	out dx, al
		309
		310	mov al, bl
		311	mov dx, [eth_nic_base]
		312	add dx, D8390_P0_RSAR0
		313	out dx, al
		314
		315	mov al, bh
		316	mov dx, [eth_nic_base]
		317	add dx, D8390_P0_RSAR1
		318	out dx, al
		319
		320	mov al, D8390_COMMAND_RD1_STA
		321	mov dx, [eth_nic_base]
		322	add dx, D8390_P0_COMMAND
		323	out dx, al
		324
		325	mov dx, [eth_asic_base]
		326	add dx, ASIC_PIO
		327
		328	mov al, [eth_flags]
		329	and al, FLAG_16BIT
		330	cmp al, 0
		331	je epw_003
		332
		333	shr ecx, 1
		334
		335	epw_002:
		336	; 2 bytes at a time
		337	mov ax, [esi]
		338	add esi, 2
		339	out dx, ax
		340
		341	loop epw_002
		342	jmp epw_004
		343
		344	epw_003:
		345	; 1 byte at a time
		346	mov al, [esi]
		347	inc esi
		348	out dx, al
		349	loop epw_003
		350
		351	epw_004:
		352	mov dx, [eth_nic_base]
		353	add dx, D8390_P0_ISR
		354
		355	epw_005:
		356	in al, dx
		357	and al, D8390_ISR_RDC
		358	cmp al, D8390_ISR_RDC
		359	jne epw_005
		360
		361	ret
		362
		363
		364
		365	;***************************************************************************
		366	; Function
		367	; rtl8029_reset
		368	; Description
		369	; Place the chip (ie, the ethernet card) into a virgin state
		370	; No inputs
		371	; All registers destroyed
		372	;
		373	;***************************************************************************
		374	rtl8029_reset:
		375	mov bx, [eth_nic_base]
		376
		377	mov dx, bx
		378	add dx, D8390_P0_COMMAND
		379	mov al, D8390_COMMAND_PS0_RD2_STP
		380	out dx, al
		381
		382	mov dx, bx
		383	add dx, D8390_P0_DCR
		384	mov al, [eth_flags]
		385	and al, FLAG_16BIT
		386	cmp al, FLAG_16BIT
		387	jne nsr_001
		388
		389	mov al, 0x49
		390	jmp nsr_002
		391
		392	nsr_001:
		393	mov al, 0x48
		394
		395	nsr_002:
		396	out dx, al
		397
		398	xor al, al
		399
		400	mov dx, bx
		401	add dx, D8390_P0_RBCR0
		402	out dx, al
		403
		404	mov dx, bx
		405	add dx, D8390_P0_RBCR1
		406	out dx, al
		407
		408	mov dx, bx
		409	add dx, D8390_P0_RCR
		410	mov al, 0x20
		411	out dx, al
		412
		413	mov dx, bx
		414	add dx, D8390_P0_TCR
		415	mov al, 2
		416	out dx, al
		417
		418	mov dx, bx
		419	add dx, D8390_P0_TPSR
		420	mov al, [eth_tx_start]
		421	out dx, al
		422
		423	mov dx, bx
		424	add dx, D8390_P0_PSTART
		425	mov al, [eth_rx_start]
		426	out dx, al
		427
		428	mov dx, bx
		429	add dx, D8390_P0_PSTOP
		430	mov al, [eth_memsize]
		431	out dx, al
		432
		433	mov dx, bx
		434	add dx, D8390_P0_BOUND
		435	mov al, [eth_memsize]
		436	dec al
		437	out dx, al
		438
		439	mov dx, bx
		440	add dx, D8390_P0_ISR
		441	mov al, 0xff
		442	out dx, al
		443
		444	mov dx, bx
		445	add dx, D8390_P0_IMR
		446	xor al, al
		447	out dx, al
		448
		449	mov dx, bx
		450	add dx, D8390_P0_COMMAND
		451	mov al, D8390_COMMAND_PS1_RD2_STP
		452	out dx, al
		453
		454	mov dx, bx
		455	add dx, D8390_P1_PAR0
		456	mov esi, node_addr
		457	mov ecx, ETH_ALEN
		458
		459	nsr_003:
		460	mov al, [esi]
		461	out dx, al
		462
		463	inc esi
		464	inc dx
		465	loop nsr_003
		466
		467	mov dx, bx
		468	add dx, D8390_P1_MAR0
		469	mov ecx, ETH_ALEN
		470
		471	mov al, 0xff
		472
		473	nsr_004:
		474	out dx, al
		475	inc dx
		476	loop nsr_004
		477
		478	mov dx, bx
		479	add dx, D8390_P1_CURR
		480	mov al, [eth_rx_start]
		481	out dx, al
		482
		483	mov dx, bx
		484	add dx, D8390_P0_COMMAND
		485	mov al, D8390_COMMAND_PS0_RD2_STA
		486	out dx, al
		487
		488	mov dx, bx
		489	add dx, D8390_P0_ISR
		490	mov al, 0xff
		491	out dx, al
		492
		493	mov dx, bx
		494	add dx, D8390_P0_TCR
		495	mov al, 0
		496	out dx, al
		497
		498	mov dx, bx
		499	add dx, D8390_P0_RCR
		500	mov al, 4
		501	out dx, al
		502
		503	ret
		504
		505
		506
		507	;***************************************************************************
		508	; Function
		509	; rtl8029_probe
		510	; Description
		511	; Searches for an ethernet card, enables it and clears the rx buffer
		512	; If a card was found, it enables the ethernet -> TCPIP link
		513	;
		514	;***************************************************************************
		515	rtl8029_probe:
		516	mov eax, [io_addr]
		517	mov [eth_nic_base], ax ; The IO address space is 16 bit only
		518
		519	mov al, VENDOR_NONE
		520	mov [eth_vendor], al
		521
		522	mov al, [eth_vendor]
		523	cmp al, VENDOR_NONE
		524
		525	jne ep_check_have_vendor
		526	xor eax, eax
		527	mov [eth_bmem], eax
		528
		529	mov al, FLAG_PIO
		530	mov [eth_flags], al
		531
		532	mov ax, [eth_nic_base]
		533	add ax, NE_ASIC_OFFSET
		534	mov [eth_asic_base], ax
		535
		536	mov al, MEM_16384
		537	mov [eth_memsize], al
		538
		539	mov al, 32
		540	mov [eth_tx_start], al
		541
		542	add al, D8390_TXBUF_SIZE
		543	mov [eth_rx_start], al
		544
		545	mov dx, [eth_asic_base]
		546	add dx, NE_RESET
		547
		548	in al, dx
		549	out dx, al
		550
		551	in al, 0x84
		552
		553	mov bx, [eth_nic_base]
		554
		555	mov dx, bx
		556	add dx, D8390_P0_COMMAND
		557	mov al, D8390_COMMAND_RD2_STP
		558	out dx, al
		559
		560	mov dx, bx
		561	add dx, D8390_P0_RCR
		562	mov al, D8390_RCR_MON
		563	out dx, al
		564
		565	mov dx, bx
		566	add dx, D8390_P0_DCR
		567	mov al, D8390_DCR_FT1_LS
		568	out dx, al
		569
		570	mov dx, bx
		571	add dx, D8390_P0_PSTART
		572	mov al, MEM_8192
		573	out dx, al
		574
		575	mov dx, bx
		576	add dx, D8390_P0_PSTOP
		577	mov al, MEM_16384
		578	out dx, al
		579
		580	mov esi, test_data
		581	mov ebx, 8192
		582	mov ecx, 14
		583	call eth_pio_write
		584
		585	mov ebx, 8192
		586	mov ecx, 14
		587	mov edi, test_buffer
		588	call eth_pio_read
		589
		590	mov esi, test_buffer
		591	mov edi, test_data
		592	mov ecx, 13
		593	cld
		594	rep cmpsb
		595
		596	je ep_set_vendor
		597
		598	mov al, [eth_flags]
		599	or al, FLAG_16BIT
		600	mov [eth_flags], al
		601
		602	mov al, MEM_32768
		603	mov [eth_memsize], al
		604
		605	mov al, 64
		606	mov [eth_tx_start], al
		607
		608	add al, D8390_TXBUF_SIZE
		609	mov [eth_rx_start], al
		610
		611	mov bx, [eth_nic_base]
		612
		613	mov dx, bx
		614	add dx, D8390_P0_DCR
		615	mov al, D8390_DCR_WTS_FT1_LS
		616	out dx, al
		617
		618	mov dx, bx
		619	add dx, D8390_P0_PSTART
		620	mov al, MEM_16384
		621	out dx, al
		622
		623	mov dx, bx
		624	add dx, D8390_P0_PSTOP
		625	mov al, MEM_32768
		626	out dx, al
		627
		628	mov esi, test_data
		629	mov ebx, 16384
		630	mov ecx, 14
		631	call eth_pio_write
		632
		633	mov ebx, 16384
		634	mov ecx, 14
		635	mov edi, test_buffer
		636	call eth_pio_read
		637
		638	mov esi, test_buffer
		639	mov edi, test_data
		640	mov ecx, 13
		641	cld
		642	rep cmpsb
		643
		644	ep_set_vendor:
		645	; this bit is odd - probably left over from my hacking
		646	mov ax, [eth_nic_base]
		647	cmp ax, 0
		648	je rtl8029_exit
		649	cmp ax, ISA_MAX_ADDR
		650	jbe ep_001
		651	mov al, [eth_flags]
		652	or al, FLAG_16BIT
		653	mov [eth_flags], al
		654
		655	ep_001:
		656	mov al, VENDOR_NOVELL
		657	mov [eth_vendor], al
		658
		659	mov ebx, 0
		660	mov ecx, 16
		661	mov edi, romdata
		662	call eth_pio_read
		663
		664
		665	mov ecx, ETH_ALEN
		666	mov esi, romdata
		667	mov edi, node_addr
		668
		669	mov bl, [eth_flags]
		670	and bl, FLAG_16BIT
		671
		672	ep_002:
		673	mov al, [esi]
		674	mov [edi], al
		675
		676	inc edi
		677	inc esi
		678	cmp bl, FLAG_16BIT
		679	jne ep_003
		680
		681	inc esi
		682
		683	ep_003:
		684	loop ep_002
		685
		686	ep_check_have_vendor:
		687	mov al, [eth_vendor]
		688	cmp al, VENDOR_NONE
		689	je rtl8029_exit
		690
		691	cmp al, VENDOR_3COM
		692	je ep_reset_card
		693
		694	mov eax, [eth_bmem]
		695	mov [eth_rmem], eax
		696
		697	ep_reset_card:
		698	; Reset the card
		699	call rtl8029_reset
		700
		701	; Indicate that we have successfully reset the card
		702	mov eax, [pci_data]
		703	mov [eth_status], eax
		704
		705	rtl8029_exit:
		706	ret
		707
		708
		709
		710	;***************************************************************************
		711	; Function
		712	; rtl8029_poll
		713	;
		714	; Description
		715	; Polls the ethernet card for a received packet
		716	; Received data, if any, ends up in Ether_buffer
		717	;
		718	;***************************************************************************
		719	rtl8029_poll:
		720	mov eax, Ether_buffer
		721	mov [eth_rx_data_ptr], eax
		722
		723	mov bx, [eth_nic_base]
		724
		725	mov dx, bx
		726	add dx, D8390_P0_RSR
		727	in al, dx
		728
		729	and al, D8390_RSTAT_PRX
		730	cmp al, D8390_RSTAT_PRX
		731	jne nsp_exit
		732
		733	mov dx, bx
		734	add dx, D8390_P0_BOUND
		735	in al, dx
		736	inc al
		737
		738	cmp al, [eth_memsize]
		739	jb nsp_001
		740
		741	mov al, [eth_rx_start]
		742
		743	nsp_001:
		744	mov ch, al
		745
		746	mov dx, bx
		747	add dx, D8390_P0_COMMAND
		748	mov al, D8390_COMMAND_PS1
		749	out dx, al
		750
		751	mov dx, bx
		752	add dx, D8390_P1_CURR
		753	in al, dx ; get current page
		754	mov cl, al
		755
		756	mov dx, bx
		757	add dx, D8390_P0_COMMAND
		758	mov al, D8390_COMMAND_PS0
		759	out dx, al
		760
		761	cmp cl, [eth_memsize]
		762	jb nsp_002
		763
		764	mov cl, [eth_rx_start]
		765
		766	nsp_002:
		767	cmp cl, ch
		768	je nsp_exit
		769
		770	xor ax, ax
		771	mov ah, ch
		772
		773	mov [pktoff], ax
		774
		775	mov al, [eth_flags]
		776	and al, FLAG_PIO
		777	cmp al, FLAG_PIO
		778	jne nsp_003
		779
		780	movzx ebx, word [pktoff]
		781	mov edi, pkthdr
		782	mov ecx, 4
		783	call eth_pio_read
		784	jmp nsp_004
		785
		786	nsp_003:
		787	mov edi, [eth_rmem]
		788	movzx eax, word [pktoff]
		789	add edi, eax
		790	mov eax, [edi]
		791	mov [pkthdr], eax
		792
		793	nsp_004:
		794	mov ax, [pktoff]
		795	add ax, 4
		796	mov [pktoff], ax
		797
		798	mov ax, [pkthdr + 2]
		799	sub ax, 4
		800
		801	mov [eth_tmp_len], ax
		802
		803	cmp ax, ETH_ZLEN
		804	jb nsp_exit
		805
		806	cmp ax, ETH_FRAME_LEN
		807	ja nsp_exit
		808
		809	mov al, [pkthdr]
		810	and al, D8390_RSTAT_PRX
		811	cmp al, D8390_RSTAT_PRX
		812	jne nsp_exit
		813
		814	; Right, we can now get the data
		815
		816	mov ax, [eth_tmp_len]
		817	mov [eth_rx_data_len], ax
		818
		819	xor ebx, ebx
		820	mov bh, [eth_memsize]
		821	sub bx, [pktoff]
		822
		823	cmp [eth_tmp_len], bx
		824	jbe nsp_005
		825
		826	mov al, [eth_flags]
		827	and al, FLAG_PIO
		828	cmp al, FLAG_PIO
		829	jne nsp_006
		830
		831	push ebx
		832	mov ecx, ebx
		833	xor ebx, ebx
		834	mov bx, [pktoff]
		835	mov edi, [eth_rx_data_ptr]
		836	call eth_pio_read
		837	pop ebx
		838	jmp nsp_007
		839
		840	nsp_006:
		841	; Not implemented, as we are using PIO mode on this card
		842
		843	nsp_007:
		844	xor ax, ax
		845	mov ah, [eth_rx_start]
		846	mov [pktoff], ax
		847
		848	mov eax, [eth_rx_data_ptr]
		849	add eax, ebx
		850	mov [eth_rx_data_ptr], eax
		851
		852	mov ax, [eth_tmp_len]
		853	sub ax, bx
		854	mov [eth_tmp_len], ax
		855
		856	nsp_005:
		857	mov al, [eth_flags]
		858	and al, FLAG_PIO
		859	cmp al, FLAG_PIO
		860	jne nsp_008
		861
		862	xor ebx, ebx
		863	mov bx, [pktoff]
		864	xor ecx, ecx
		865	mov cx, [eth_tmp_len]
		866	mov edi, [eth_rx_data_ptr]
		867	call eth_pio_read
		868	jmp nsp_009
		869
		870	nsp_008:
		871	; Not implemented, as we are using PIO mode on this card
		872
		873	nsp_009:
		874	mov al, [pkthdr+1]
		875	cmp al, [eth_rx_start]
		876	jne nsp_010
		877
		878	mov al, [eth_memsize]
		879
		880	nsp_010:
		881	mov dx, [eth_nic_base]
		882	add dx, D8390_P0_BOUND
		883	dec al
		884	out dx, al
		885
		886	nsp_exit:
		887	ret
		888
		889
		890
		891	;***************************************************************************
		892	; Function
		893	; rtl8029_transmit
		894	;
		895	; Description
		896	; Transmits a packet of data via the ethernet card
		897	; Pointer to 48 bit destination address in edi
		898	; Type of packet in bx
		899	; size of packet in ecx
		900	; pointer to packet data in esi
		901	;
		902	;***************************************************************************
		903	rtl8029_transmit:
		904	mov [eth_type], bx
		905
		906	pusha
		907
		908	mov esi, edi
		909	xor bx, bx
		910	mov bh, [eth_tx_start]
		911	mov ecx, ETH_ALEN
		912	call eth_pio_write
		913
		914	mov esi, node_addr
		915	xor bx, bx
		916	mov bh, [eth_tx_start]
		917	add bx, ETH_ALEN
		918	mov ecx, ETH_ALEN
		919	call eth_pio_write
		920
		921	mov esi, eth_type
		922	xor bx, bx
		923	mov bh, [eth_tx_start]
		924	add bx, ETH_ALEN
		925	add bx, ETH_ALEN
		926	mov ecx, 2
		927	call eth_pio_write
		928
		929	popa
		930
		931	xor bx, bx
		932	mov bh, [eth_tx_start]
		933	add bx, ETH_HLEN
		934	push ecx
		935	call eth_pio_write
		936	pop ecx
		937
		938	add ecx, ETH_HLEN
		939	cmp ecx, ETH_ZLEN
		940	jae nst_001
		941
		942	mov ecx, ETH_ZLEN
		943
		944	nst_001:
		945	push ecx
		946
		947	mov bx, [eth_nic_base]
		948
		949	mov dx, bx
		950	add dx, D8390_P0_COMMAND
		951	mov al, D8390_COMMAND_PS0_RD2_STA
		952	out dx, al
		953
		954	mov dx, bx
		955	add dx, D8390_P0_TPSR
		956	mov al, [eth_tx_start]
		957	out dx, al
		958
		959	pop ecx
		960
		961	mov dx, bx
		962	add dx, D8390_P0_TBCR0
		963	mov al, cl
		964	out dx, al
		965
		966	mov dx, bx
		967	add dx, D8390_P0_TBCR1
		968	mov al, ch
		969	out dx, al
		970
		971	mov dx, bx
		972	add dx, D8390_P0_COMMAND
		973	mov al, D8390_COMMAND_PS0_TXP_RD2_STA
		974	out dx, al
		975
		976	ret

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(root)/kernel/trunk/network/eth_drv/drivers/rtl8029.inc – Rev 2455