WebSVN – Kolibri OS – Blame – /kernel/trunk/network/eth_drv/drivers/i8255x.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	;; ;;
		7	;; I8255X.INC ;;
		8	;; ;;
		9	;; Ethernet driver for Menuet OS ;;
		10	;; ;;
		11	;; Version 0.3 11 August 2003 ;;
		12	;; ;;
		13	;; This driver is based on the eepro100 driver from ;;
		14	;; the etherboot 5.0.6 project. The copyright statement is ;;
		15	;; ;;
		16	;; GNU GENERAL PUBLIC LICENSE ;;
		17	;; Version 2, June 1991 ;;
		18	;; ;;
		19	;; remaining parts Copyright 2002 Mike Hibbett, ;;
		20	;; mikeh@oceanfree.net ;;
		21	;; ;;
		22	;; See file COPYING for details ;;
		23	;; ;;
		24	;; ;;
		25	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		26
		27	$Revision: 2455 $
		28
		29
		30	;********************************************************************
		31	; Interface
		32	; I8255x_reset
		33	; I8255x_probe
		34	; I8255x_poll
		35	; I8255x_transmit
		36	;
		37	; These functions are referenced in ethernet.inc
		38	;
		39	;********************************************************************
		40
		41
		42	rxfd_status equ eth_data_start
		43	rxfd_command equ eth_data_start + 2
		44	rxfd_link equ eth_data_start + 4
		45	rxfd_rx_buf_addr equ eth_data_start + 8
		46	rxfd_count equ eth_data_start + 12
		47	rxfd_size equ eth_data_start + 14
		48	rxfd_packet equ eth_data_start + 16
		49
		50
		51
		52	uglobal
		53	eeprom_data:
		54	times 16 dd 0
		55
		56	align 4
		57
		58	lstats:
		59	tx_good_frames:
		60	dd 0
		61	tx_coll16_errs:
		62	dd 0
		63	tx_late_colls:
		64	dd 0
		65	tx_underruns:
		66	dd 0
		67	tx_lost_carrier:
		68	dd 0
		69	tx_deferred:
		70	dd 0
		71	tx_one_colls:
		72	dd 0
		73	tx_multi_colls:
		74	dd 0
		75	tx_total_colls:
		76	dd 0
		77	rx_good_frames:
		78	dd 0
		79	rx_crc_errs:
		80	dd 0
		81	rx_align_errs:
		82	dd 0
		83	rx_resource_errs:
		84	dd 0
		85	rx_overrun_errs:
		86	dd 0
		87	rx_colls_errs:
		88	dd 0
		89	rx_runt_errs:
		90	dd 0
		91	done_marker:
		92	dd 0
		93
		94	align 4
		95
		96	confcmd:
		97	confcmd_status:
		98	dw 0
		99	confcmd_command:
		100	dw 0
		101	confcmd_link:
		102	dd 0
		103	endg
		104
		105	iglobal
		106	confcmd_data:
		107	db 22, 0x08, 0, 0, 0, 0x80, 0x32, 0x03, 1
		108	db 0, 0x2e, 0, 0x60, 0, 0xf2, 0x48, 0, 0x40, 0xf2
		109	db 0x80, 0x3f, 0x05
		110	endg
		111
		112	uglobal
		113	align 4
		114
		115	txfd:
		116	txfd_status:
		117	dw 0
		118	txfd_command:
		119	dw 0
		120	txfd_link:
		121	dd 0
		122	txfd_tx_desc_addr:
		123	dd 0
		124	txfd_count:
		125	dd 0
		126	txfd_tx_buf_addr0:
		127	dd 0
		128	txfd_tx_buf_size0:
		129	dd 0
		130	txfd_tx_buf_addr1:
		131	dd 0
		132	txfd_tx_buf_size1:
		133	dd 0
		134
		135	align 4
		136
		137	hdr:
		138	hdr_dst_addr:
		139	times 6 db 0
		140	hdr_src_addr:
		141	times 6 db 0
		142	hdr_type:
		143	dw 0
		144	endg
		145
		146
		147	;***************************************************************************
		148	; Function
		149	; wait_for_cmd_done
		150	;
		151	; Description
		152	; waits for the hardware to complete a command
		153	; port address in edx
		154	;
		155	; al destroyed
		156	;***************************************************************************
		157	wait_for_cmd_done:
		158	in al, dx
		159	cmp al, 0
		160	jne wait_for_cmd_done
		161	ret
		162
		163
		164
		165	;***************************************************************************
		166	; Function
		167	; mdio_read
		168	;
		169	; Description
		170	; This probably reads a register in the "physical media interface chip"
		171	; Phy_id in ebx
		172	; location in ecx
		173	;
		174	; Data returned in eax
		175	;
		176	;***************************************************************************
		177	mdio_read:
		178	mov edx, [io_addr]
		179	add edx, 16 ; SCBCtrlMDI
		180
		181	mov eax, 0x08000000
		182	shl ecx, 16
		183	or eax, ecx
		184	shl ebx, 21
		185	or eax, ebx
		186
		187	out dx, eax
		188
		189	mrlp:
		190	call delay_us
		191	in eax, dx
		192	mov ecx, eax
		193	and ecx, 0x10000000
		194	jz mrlp
		195
		196	and eax, 0xffff
		197	ret
		198
		199
		200
		201	;***************************************************************************
		202	; Function
		203	; mdio_write
		204	;
		205	; Description
		206	; This probably writes a register in the "physical media interface chip"
		207	; Phy_id in ebx
		208	; location in ecx
		209	; data in edx
		210	; Data returned in eax
		211	;
		212	;***************************************************************************
		213	mdio_write:
		214	mov eax, 0x04000000
		215	shl ecx, 16
		216	or eax, ecx
		217	shl ebx, 21
		218	or eax, ebx
		219	or eax, edx
		220
		221	mov edx, [io_addr]
		222	add edx, 16 ; SCBCtrlMDI
		223	out dx, eax
		224
		225	mwlp:
		226	call delay_us
		227	in eax, dx
		228	mov ecx, eax
		229	and ecx, 0x10000000
		230	jz mwlp
		231
		232	and eax, 0xffff
		233	ret
		234
		235
		236
		237	;/***********************************************************************/
		238	;/* I82557 related defines */
		239	;/***********************************************************************/
		240
		241	; Serial EEPROM section.
		242	; A "bit" grungy, but we work our way through bit-by-bit :->.
		243	; EEPROM_Ctrl bits.
		244	EE_SHIFT_CLK equ 0x01 ; EEPROM shift clock.
		245	EE_CS equ 0x02 ; EEPROM chip select.
		246	EE_DATA_WRITE equ 0x04 ; EEPROM chip data in.
		247	EE_DATA_READ equ 0x08 ; EEPROM chip data out.
		248	EE_WRITE_0 equ 0x4802
		249	EE_WRITE_1 equ 0x4806
		250	EE_ENB equ 0x4802
		251
		252
		253	; The EEPROM commands include the alway-set leading bit.
		254	EE_READ_CMD equ 6
		255
		256	; The SCB accepts the following controls for the Tx and Rx units:
		257	CU_START equ 0x0010
		258	CU_RESUME equ 0x0020
		259	CU_STATSADDR equ 0x0040
		260	CU_SHOWSTATS equ 0x0050 ; Dump statistics counters.
		261	CU_CMD_BASE equ 0x0060 ; Base address to add to add CU commands.
		262	CU_DUMPSTATS equ 0x0070 ; Dump then reset stats counters.
		263
		264	RX_START equ 0x0001
		265	RX_RESUME equ 0x0002
		266	RX_ABORT equ 0x0004
		267	RX_ADDR_LOAD equ 0x0006
		268	RX_RESUMENR equ 0x0007
		269	INT_MASK equ 0x0100
		270	DRVR_INT equ 0x0200 ; Driver generated interrupt.
		271
		272
		273	;***************************************************************************
		274	; Function
		275	; do_eeprom_cmd
		276	;
		277	; Description
		278	; writes a cmd to the ethernet cards eeprom, by bit bashing
		279	; cmd in ebx
		280	; cmd length in ecx
		281	; return in eax
		282	;***************************************************************************
		283	do_eeprom_cmd:
		284	mov edx, [io_addr]; We only require the value in dx
		285	add dx, 14 ; the value SCBeeprom
		286
		287	mov ax, EE_ENB
		288	out dx, ax
		289	call delay_us
		290
		291	mov ax, 0x4803 ; EE_ENB \| EE_SHIFT_CLK
		292	out dx, ax
		293	call delay_us
		294
		295	; dx holds ee_addr
		296	; ecx holds count
		297	; eax holds cmd
		298	xor edi, edi ; this will be the receive data
		299
		300	dec_001:
		301	mov esi, 1
		302
		303	dec ecx
		304	shl esi, cl
		305	inc ecx
		306	and esi, ebx
		307	mov eax, EE_WRITE_0; I am assuming this doesnt affect the flags..
		308	cmp esi, 0
		309	jz dec_002
		310	mov eax, EE_WRITE_1
		311
		312	dec_002:
		313	out dx, ax
		314	call delay_us
		315
		316	or ax, EE_SHIFT_CLK
		317	out dx, ax
		318	call delay_us
		319
		320	shl edi, 1
		321
		322	in ax, dx
		323	and ax, EE_DATA_READ
		324	cmp ax, 0
		325	jz dec_003
		326	inc edi
		327
		328	dec_003:
		329	loop dec_001
		330
		331	mov ax, EE_ENB
		332	out dx, ax
		333	call delay_us
		334
		335	mov ax, 0x4800
		336	out dx, ax
		337	call delay_us
		338
		339	mov eax, edi
		340
		341	ret
		342
		343
		344	;***************************************************************************
		345	; Function
		346	; I8255x_probe
		347	; Description
		348	; Searches for an ethernet card, enables it and clears the rx buffer
		349	; If a card was found, it enables the ethernet -> TCPIP link
		350	;
		351	;***************************************************************************
		352	I8255x_probe:
		353	DEBUGF 1," K : Probing i8255x device \n"
		354	mov eax, [io_addr]
		355
		356	mov ebx, [pci_bus]
		357	mov ecx, [pci_dev]
		358	mov edx, 0x04 ; PCI_COMMAND
		359	call pcibios_read_config_word
		360
		361	or ax, 0x05
		362	mov ebx, [pci_bus]
		363	mov ecx, [pci_dev]
		364	mov edx, 0x04 ; PCI_COMMAND
		365	call pcibios_write_config_word
		366
		367	mov ebx, 0x6000000
		368	mov ecx, 27
		369	call do_eeprom_cmd
		370	and eax, 0xffe0000
		371	cmp eax, 0xffe0000
		372	je bige
		373
		374	mov ebx, 0x1800000
		375	mov ecx, 0x40
		376	jmp doread
		377
		378	bige:
		379	mov ebx, 0x6000000
		380	mov ecx, 0x100
		381
		382	doread:
		383	; do-eeprom-cmd will destroy all registers
		384	; we have eesize in ecx
		385	; read_cmd in ebx
		386
		387	; Ignore full eeprom - just load the mac address
		388	mov ecx, 0
		389
		390	drlp:
		391	push ecx ; save count
		392	push ebx
		393	mov eax, ecx
		394	shl eax, 16
		395	or ebx, eax
		396	mov ecx, 27
		397	call do_eeprom_cmd
		398
		399	pop ebx
		400	pop ecx
		401
		402	mov edx, ecx
		403	shl edx, 2
		404	mov esi, eeprom_data
		405	add esi, edx
		406	mov [esi], eax
		407
		408	inc ecx
		409	cmp ecx, 16
		410	jne drlp
		411
		412	; OK, we have the MAC address.
		413	; Now reset the card
		414
		415	mov edx, [io_addr]
		416	add dx, 8 ; SCBPort
		417	xor eax, eax ; The reset cmd == 0
		418	out dx, eax
		419
		420	mov esi, 10
		421	call delay_ms ; Give the card time to warm up.
		422
		423	mov eax, lstats
		424	mov edx, [io_addr]
		425	add edx, 4 ; SCBPointer
		426	out dx, eax
		427
		428	mov eax, 0x0140 ; INT_MASK \| CU_STATSADDR
		429	mov edx, [io_addr]
		430	add edx, 2 ; SCBCmd
		431	out dx, ax
		432
		433	call wait_for_cmd_done
		434
		435	mov eax, 0
		436	mov edx, [io_addr]
		437	add edx, 4 ; SCBPointer
		438	out dx, eax
		439
		440	mov eax, 0x0106 ; INT_MASK \| RX_ADDR_LOAD
		441	mov edx, [io_addr]
		442	add edx, 2 ; SCBCmd
		443	out dx, ax
		444
		445	call wait_for_cmd_done
		446
		447	; build rxrd structure
		448	mov ax, 0x0001
		449	mov [rxfd_status], ax
		450	mov ax, 0x0000
		451	mov [rxfd_command], ax
		452
		453	mov eax, rxfd_status
		454	sub eax, OS_BASE
		455	mov [rxfd_link], eax
		456
		457	mov eax, Ether_buffer
		458	sub eax, OS_BASE
		459	mov [rxfd_rx_buf_addr], eax
		460
		461	mov ax, 0
		462	mov [rxfd_count], ax
		463
		464	mov ax, 1528
		465	mov [rxfd_size], ax
		466
		467	mov edx, [io_addr]
		468	add edx, 4 ; SCBPointer
		469
		470	mov eax, rxfd_status
		471	sub eax, OS_BASE
		472	out dx, eax
		473
		474	mov edx, [io_addr]
		475	add edx, 2 ; SCBCmd
		476
		477	mov ax, 0x0101 ; INT_MASK \| RX_START
		478	out dx, ax
		479
		480	call wait_for_cmd_done
		481
		482	; start the reciver
		483
		484	mov ax, 0
		485	mov [rxfd_status], ax
		486
		487	mov ax, 0xc000
		488	mov [rxfd_command], ax
		489
		490	mov edx, [io_addr]
		491	add edx, 4 ; SCBPointer
		492
		493	mov eax, rxfd_status
		494	sub eax, OS_BASE
		495	out dx, eax
		496
		497	mov edx, [io_addr]
		498	add edx, 2 ; SCBCmd
		499
		500	mov ax, 0x0101 ; INT_MASK \| RX_START
		501	out dx, ax
		502
		503	; Init TX Stuff
		504
		505	mov edx, [io_addr]
		506	add edx, 4 ; SCBPointer
		507
		508	mov eax, 0
		509	out dx, eax
		510
		511	mov edx, [io_addr]
		512	add edx, 2 ; SCBCmd
		513
		514	mov ax, 0x0160 ; INT_MASK \| CU_CMD_BASE
		515	out dx, ax
		516
		517	call wait_for_cmd_done
		518
		519	; Set TX Base address
		520
		521	; First, set up confcmd values
		522
		523	mov ax, 2
		524	mov [confcmd_command], ax
		525	mov eax, txfd
		526	sub eax, OS_BASE
		527	mov [confcmd_link], eax
		528
		529	mov ax, 1
		530	mov [txfd_command], ax ; CmdIASetup
		531
		532	mov ax, 0
		533	mov [txfd_status], ax
		534
		535	mov eax, confcmd
		536	sub eax, OS_BASE
		537	mov [txfd_link], eax
		538
		539
		540
		541	; ETH_ALEN is 6 bytes
		542
		543	mov esi, eeprom_data
		544	mov edi, node_addr
		545	mov ecx, 3
		546	drp000:
		547	mov eax, [esi]
		548	mov [edi], al
		549	shr eax, 8
		550	inc edi
		551	mov [edi], al
		552	inc edi
		553	add esi, 4
		554	loop drp000
		555
		556	; Hard code your MAC address into node_addr at this point,
		557	; If you cannot read the MAC address from the eeprom in the previous step.
		558	; You also have to write the mac address into txfd_tx_desc_addr, rather
		559	; than taking data from eeprom_data
		560
		561	mov esi, eeprom_data
		562	mov edi, txfd_tx_desc_addr
		563	mov ecx, 3
		564	drp001:
		565	mov eax, [esi]
		566	mov [edi], al
		567	shr eax, 8
		568	inc edi
		569	mov [edi], al
		570	inc edi
		571	add esi, 4
		572	loop drp001
		573
		574
		575	mov esi, eeprom_data + (6 * 4)
		576	mov eax, [esi]
		577	shr eax, 8
		578	and eax, 0x3f
		579	cmp eax, 4 ; DP83840
		580	je drp002
		581	cmp eax, 10 ; DP83840A
		582	je drp002
		583	jmp drp003
		584
		585	drp002:
		586	mov ebx, [esi]
		587	and ebx, 0x1f
		588	push ebx
		589	mov ecx, 23
		590	call mdio_read
		591	pop ebx
		592	or eax, 0x0422
		593	mov ecx, 23
		594	mov edx, eax
		595	call mdio_write
		596
		597	drp003:
		598	mov ax, 0x4002 ; Cmdsuspend \| CmdConfigure
		599	mov [confcmd_command], ax
		600	mov ax, 0
		601	mov [confcmd_status], ax
		602	mov eax, txfd
		603	mov [confcmd_link], eax
		604	mov ebx, confcmd_data
		605	mov al, 0x88 ; fifo of 8 each
		606	mov [ebx + 1], al
		607	mov al, 0
		608	mov [ebx + 4], al
		609	mov al, 0x80
		610	mov [ebx + 5], al
		611	mov al, 0x48
		612	mov [ebx + 15], al
		613	mov al, 0x80
		614	mov [ebx + 19], al
		615	mov al, 0x05
		616	mov [ebx + 21], al
		617
		618	mov eax, txfd
		619	sub eax, OS_BASE
		620	mov edx, [io_addr]
		621	add edx, 4 ; SCBPointer
		622	out dx, eax
		623
		624	mov eax, 0x0110 ; INT_MASK \| CU_START
		625	mov edx, [io_addr]
		626	add edx, 2 ; SCBCmd
		627	out dx, ax
		628
		629	call wait_for_cmd_done
		630	jmp skip
		631
		632	; wait for thing to start
		633	drp004:
		634	mov ax, [txfd_status]
		635	cmp ax, 0
		636	je drp004
		637
		638	skip:
		639	; Indicate that we have successfully reset the card
		640	mov eax, [pci_data]
		641	mov [eth_status], eax
		642
		643	I8255x_exit:
		644	ret
		645
		646
		647
		648	;***************************************************************************
		649	; Function
		650	; I8255x_reset
		651	; Description
		652	; Place the chip (ie, the ethernet card) into a virgin state
		653	; No inputs
		654	; All registers destroyed
		655	;
		656	;***************************************************************************
		657	I8255x_reset:
		658	ret
		659
		660
		661
		662	;***************************************************************************
		663	; Function
		664	; I8255x_poll
		665	;
		666	; Description
		667	; Polls the ethernet card for a received packet
		668	; Received data, if any, ends up in Ether_buffer
		669	;
		670	;***************************************************************************
		671	I8255x_poll:
		672	mov ax, 0 ; assume no data
		673	mov [eth_rx_data_len], ax
		674
		675	mov ax, [rxfd_status]
		676	cmp ax, 0
		677	je i8p_exit
		678
		679	mov ax, 0
		680	mov [rxfd_status], ax
		681
		682	mov ax, 0xc000
		683	mov [rxfd_command], ax
		684
		685	mov edx, [io_addr]
		686	add edx, 4 ; SCBPointer
		687
		688	mov eax, rxfd_status
		689	sub eax, OS_BASE
		690	out dx, eax
		691
		692	mov edx, [io_addr]
		693	add edx, 2 ; SCBCmd
		694
		695	mov ax, 0x0101 ; INT_MASK \| RX_START
		696	out dx, ax
		697
		698	call wait_for_cmd_done
		699
		700	mov esi, rxfd_packet
		701	mov edi, Ether_buffer
		702	mov ecx, 1518
		703	cld
		704	rep movsb
		705
		706	mov ax, [rxfd_count]
		707	and ax, 0x3fff
		708	mov [eth_rx_data_len], ax
		709
		710	i8p_exit:
		711	ret
		712
		713
		714
		715	;***************************************************************************
		716	; Function
		717	; I8255x_transmit
		718	;
		719	; Description
		720	; Transmits a packet of data via the ethernet card
		721	; Pointer to 48 bit destination address in edi
		722	; Type of packet in bx
		723	; size of packet in ecx
		724	; pointer to packet data in esi
		725	;
		726	;***************************************************************************
		727	I8255x_transmit:
		728
		729	mov [hdr_type], bx
		730
		731	mov eax, [edi]
		732	mov [hdr_dst_addr], eax
		733	mov ax, [edi+4]
		734	mov [hdr_dst_addr+4], ax
		735
		736	mov eax, [node_addr]
		737	mov [hdr_src_addr], eax
		738	mov ax, [node_addr+4]
		739	mov [hdr_src_addr+4], ax
		740
		741	mov edx, [io_addr]
		742	in ax, dx
		743	and ax, 0xfc00
		744	out dx, ax
		745
		746	xor ax, ax
		747	mov [txfd_status], ax
		748	mov ax, 0x400C ; Cmdsuspend \| CmdTx \| CmdTxFlex
		749	mov [txfd_command], ax
		750	mov eax, txfd
		751	mov [txfd_link], eax
		752	mov eax, 0x02208000
		753	mov [txfd_count], eax
		754	mov eax, txfd_tx_buf_addr0
		755	sub eax, OS_BASE
		756	mov [txfd_tx_desc_addr], eax
		757	mov eax, hdr
		758	sub eax, OS_BASE
		759	mov [txfd_tx_buf_addr0], eax
		760	mov eax, 14; sizeof hdr
		761	mov [txfd_tx_buf_size0], eax
		762
		763	; Copy the buffer address and size in
		764	mov eax, esi
		765	sub eax, OS_BASE
		766	mov [txfd_tx_buf_addr1], eax
		767	mov eax, ecx
		768	mov [txfd_tx_buf_size1], eax
		769
		770	mov eax, txfd
		771	sub eax, OS_BASE
		772	mov edx, [io_addr]
		773	add edx, 4 ; SCBPointer
		774	out dx, eax
		775
		776	mov ax, 0x0110 ; INT_MASK \| CU_START
		777	mov edx, [io_addr]
		778	add edx, 2 ; SCBCmd
		779	out dx, ax
		780
		781	call wait_for_cmd_done
		782
		783	mov edx, [io_addr]
		784	in ax, dx
		785
		786	I8t_001:
		787	mov ax, [txfd_status]
		788	cmp ax, 0
		789	je I8t_001
		790
		791	mov edx, [io_addr]
		792	in ax, dx
		793
		794	ret

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(root)/kernel/trunk/network/eth_drv/drivers/i8255x.inc – Rev 2455