A2osX/DRV/UTHERNET2.DRV.S.txt

NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
				.LIST OFF	
				.OP	65C02
				.OR	$2000
				.TF DRV/UTHERNET2.DRV
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
				.INB INC/MLI.ERR.I
				.INB INC/NIC.I
				.INB INC/NIC.W5100.I
				.INB INC/LIBTCPIP.I
*--------------------------------------
ZPTmpPTR		.EQ ZPDRV
RXTX.Size		.EQ ZPDRV+2
Counter			.EQ ZPDRV+4
Offset			.EQ ZPDRV+6
*--------------------------------------
*			File Header (16 Bytes)
*--------------------------------------
CS.START		cld
				jmp Dev.Detect			cld,jmp abs=DRV
				.DA #$61				6502,Level 1 (65c02)
				.DA #1					DRV Layout Version 1
				.DA 0
				.DA CS.END-CS.START			Code Length
				.DA DEV.HEADER-CS.START		Device Header Offset
				.DA DRV.CS.START-CS.START	Driver Code Offset
				.DA DRV.CS.END-DRV.CS.START	Drv Code Length
*--------------------------------------
* Relocation Table
*--------------------------------------
L.MSG.DETECT	.DA MSG.DETECT
L.MSG.DETECT.OK	.DA MSG.DETECT.OK
L.MSG.DETECT.KO	.DA MSG.DETECT.KO
L.DEV.HEADER.NAME	.DA DEV.HEADER.NAME
				.DA 0					End Of Reloc Table
*--------------------------------------
Dev.Detect		>STYA Args
				>LDYA L.MSG.DETECT
				>SYSCALL printf
				
				ldx #$70+$88
				ldy #7
				
.1				lda A2osX.S,y		IO based detection, avoid scanning in Disk Controller IO!!!!
				bne .2
				
				lda #W5100.MR.RST
				sta W5100.MR,x

				lda #0
				
.10				dec						give some time....
				bne .10

				lda #W5100.MR.AI+W5100.MR.IND
				sta W5100.MR,x

				pha
				pla

				lda W5100.MR,x
				cmp #W5100.MR.AI+W5100.MR.IND
				bne .2
				
				>AR.SELECT RTR
				
				lda W5100.DR,x		Get RTR HI
				cmp /2000
				bne .2
				lda W5100.DR,x		Get RTR LO 
				cmp #2000
				beq	.3
				
.2				dec DEV.HEADER.NAME+3
				txa
				sec
				sbc #$10
				tax
				dey
				bne .1
				
				>LDYA L.MSG.DETECT.KO
				>SYSCALL printf

				lda #MLI.E.NODEV
				sec
				rts
				
.3				stx DEVSLOTx0
				lda #A2osX.S.NIC
				sta A2osX.S,y
				
				>LDYA ARGS
				>STYA ZPTmpPTR
				
				lda (ZPTmpPTR)
				bne .4
				
				lda #$00
				sta MAC
				lda #$08
				sta MAC+1
				lda #$DC
				sta MAC+2
				lda A2osX.RANDOM16
				eor A2osX.TIMER16
				sta MAC+3
				eor A2osX.RANDOM16+1
				sta MAC+4
				eor A2osX.TIMER16+1
				sta MAC+5
				bra .8
				
.4				jsr DecodeMac
				bcc .8
				lda #K.E.SYN
				sec
				rts
				
.8				>PUSHW L.DEV.HEADER.NAME
				>LDYA L.MSG.DETECT.OK
				>SYSCALL printf
				clc
				rts
*--------------------------------------
				.INB /A2OSX.SRC/DRV/X.NET.DRV.S
*--------------------------------------
CS.END
MSG.DETECT		.AZ "UtherNet2/W5100 Driver.\r\n"
MSG.DETECT.OK	.AZ "UtherNet2/W5100 Installed As Device : %S\r\n"
MSG.DETECT.KO	.AZ "Hardware Not Found.\r\n"
Args			.BS 2
*--------------------------------------
*			Device Header (16 Bytes)
*--------------------------------------
DEV.HEADER		cld
				jmp (DRV.CS.START,x)
				.DA #0
				.BS 6
DEV.HEADER.NAME	.AZ "ETH7"
*--------------------------------------
*			Driver Code
*--------------------------------------
DRV.CS.START	.DA STATUS
				.DA READBLOCK
				.DA WRITEBLOCK
				.DA A2osX.BADCALL
				.DA A2osX.BADCALL
				.DA A2osX.BADCALL
				.DA OPEN
				.DA CLOSE
				.DA A2osX.BADCALL
				.DA A2osX.BADCALL
L.DEVSTAT		.DA DEVSTAT
				.DA 0					end or relocation
*--------------------------------------
STATUS			>LDYA L.DEVSTAT
				clc
				rts
*--------------------------------------
READBLOCK		ldx DEVSLOTx0

				>AR.SELECT S0.RX.RSR
				lda W5100.DR,x			get the received size HI
				ora W5100.DR,x      	LO
				bne READBLOCK.RxOK

				lda #MLI.E.EOF

				sec
				rts

READBLOCK.RxOK	>AR.SELECT S0.RX.RD
				lda W5100.DR,x			get the received ptr HI
				sta offset+1
				ldy W5100.DR,x			get the received ptr LO
				sty offset

				and /RXTX.MASK
				ora /RX.BASE
				sta W5100.AR,x
				tya
				sta W5100.AR+1,x
				
				lda W5100.DR,x			get RX.Size HI
				sta RXTX.Size+1
				
				ldy W5100.DR,x			get RX.Size LO
				sty RXTX.Size

				>SYSCALL getmem
				bcs .99
				>STYA ZPTmpPTR
				stx .8+1
				sty .8+3
				sta .8+5

				lda RXTX.Size
				sec
				sbc #2				Header Size
				sta (ZPTmpPTR)
				eor #$ff
				sta Counter
				
				ldy #1

				lda RXTX.Size+1
				sbc #0
				sta (ZPTmpPTR),y
				eor #$ff
				sta Counter+1
				
				ldx DEVSLOTx0

				iny
				
.2				inc Counter
				bne .3
				inc Counter+1
				beq .4
				
.3				lda W5100.DR,x
				sta (ZPTmpPTR),y
				iny
				bne .2
				inc ZPTmpPTR+1
				bne .2

.4				>AR.SELECT S0.RX.RD

				lda Offset
				clc
				adc RXTX.Size
				pha						save LO

				lda Offset+1
				adc RXTX.Size+1
				
				sta W5100.DR,x			write HI
				pla
				sta W5100.DR,x			write LO

				>AR.SELECT S0.CR
				lda #W5100.AR.S0.CR.RCVD
				sta W5100.DR,x

.8				ldx	#$ff				hMem
				ldy	#$ff				PtrLO
				lda #$ff				PtrHI
				clc
.99				rts
*--------------------------------------
WRITEBLOCK		>STYA ZPTmpPTR
				
				lda (ZPTmpPTR)
				sta RXTX.Size
				eor #$ff
				sta Counter

				ldy #1
				lda (ZPTmpPTR),y
				sta RXTX.Size+1
				eor #$ff
				sta Counter+1
				
				ldx DEVSLOTx0
				>AR.SELECT S0.TX.FSR
				
				lda W5100.DR,x		get send size HI
				ldy W5100.DR,x      LO
				cpy RXTX.Size
				sbc RXTX.Size+1
				bcs WRITEBLOCK.1

				lda #MLI.E.EOF
				sec
				rts
				
WRITEBLOCK.1	ldy #S.ETH.SRCMAC+5
				ldx #5
.1				lda MAC,x
				sta (ZPTmpPTR),y
				dey
				dex
				bpl .1

				ldx DEVSLOTx0
				
				>AR.SELECT S0.TX.WR
				lda W5100.DR,x			Get HI
				ldy W5100.DR,x			Get LO
				and /RXTX.MASK
				ora /TX.BASE
				sta W5100.AR,x			Write HI
				sta Offset+1
				tya
				sta W5100.AR+1,x		Write LO
				sta Offset
				
				ldy #2
				
.2				inc Counter
				bne .3

				inc Counter+1
				beq .8
				
.3				lda (ZPTmpPTR),y
				sta W5100.DR,x
				iny
				bne .2
				inc ZPTmpPTR+1
				bne .2
				
.8				>AR.SELECT S0.TX.WR
				
				lda Offset
				clc
				adc RXTX.Size
				pha						save LO
				
				lda Offset+1
				adc RXTX.Size+1
				sta W5100.DR,x			write HI
				pla
				sta W5100.DR,x			write LO
				
				>AR.SELECT S0.CR
				lda #W5100.AR.S0.CR.SEND
				sta W5100.DR,x

				clc
				rts
*--------------------------------------
OPEN			jsr CLOSE

				lda #W5100.MR.AI+W5100.MR.IND
				sta W5100.MR,x

				>AR.SELECT SHAR
				
				ldy	#0

.1				lda MAC,y
				sta W5100.DR,x
				iny
				cpy #6
				bne .1

				>AR.SELECT RMSR
				lda #3					8k,0k,0k,0k
				sta W5100.DR,x		...for Socket RX Buffers
				sta W5100.DR,x		...for Socket TX Buffers

				>AR.SELECT S0.MR
				lda #W5100.AR.S0.MR.MACRAW+W5100.AR.S0.MR.MF
				sta W5100.DR,x

				>AR.SELECT S0.CR
				lda #W5100.AR.S0.CR.OPEN
				sta W5100.DR,x

				clc
				rts
*--------------------------------------
CLOSE			ldx DEVSLOTx0
				lda #W5100.MR.RST
				sta W5100.MR,x

				lda $C019				we can use VBL as we are not on //c
.1				eor $C019
				bpl .1
				
				lda $C019
.2				eor $C019
				bpl .2
				
				clc
				rts
*--------------------------------------
DRV.CS.END
DEVSLOTx0		.BS 1
*--------------------------------------
DEVSTAT			.DA #0
				.BS 3					size
				>PSTR "UtherNetII/W5100"
				.DA #S.DIB.T.NET
				.BS 1					Subtype
				.BS 2					Version
*--------------------------------------
FLAGS			.DA #0
LINK.STATUS		.DA #S.DIB.NIC.STATUS.OK+S.DIB.NIC.STATUS.FD+S.DIB.NIC.STATUS.100
MAC				.BS 6
MAN
SAVE /A2OSX.SRC/DRV/UTHERNET2.DRV.S
ASM