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kolibrios/drivers/ethernet/pcnet32.asm
hidnplayr da3583db82 Better debug output for i8254x and pcnet32 driver. 
git-svn-id: svn://kolibrios.org@3855 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-08-05 11:00:22 +00:00

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42 KiB
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; AMD PCnet driver for KolibriOS ;;
;; ;;
;; By hidnplayr & clevermouse ;;
;; ;;
;; Based on the PCnet32 driver for MenuetOS, by Jarek Pelczar ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
format MS COFF
API_VERSION = 0x01000100
DEBUG = 1
__DEBUG__ = 1
__DEBUG_LEVEL__ = 2 ; 1 = verbose, 2 = errors only
MAX_DEVICES = 4
MAX_ETH_FRAME_SIZE = 1514
TX_RING_SIZE = 4
RX_RING_SIZE = 4
include '../proc32.inc'
include '../imports.inc'
include '../fdo.inc'
include '../netdrv.inc'
public START
public service_proc
public version
PORT_AUI = 0x00
PORT_10BT = 0x01
PORT_GPSI = 0x02
PORT_MII = 0x03
PORT_PORTSEL = 0x03
PORT_ASEL = 0x04
PORT_100 = 0x40
PORT_FD = 0x80
DMA_MASK = 0xffffffff
LOG_TX_BUFFERS = 2 ; FIXME
LOG_RX_BUFFERS = 2
TX_RING_MOD_MASK = (TX_RING_SIZE-1)
TX_RING_LEN_BITS = (LOG_TX_BUFFERS shl 12)
RX_RING_MOD_MASK = (RX_RING_SIZE-1)
RX_RING_LEN_BITS = (LOG_RX_BUFFERS shl 4)
PKT_BUF_SZ = 1544
WIO_RDP = 0x10
WIO_RAP = 0x12
WIO_RESET = 0x14
WIO_BDP = 0x16
DWIO_RDP = 0x10
DWIO_RAP = 0x14
DWIO_RESET = 0x18
DWIO_BDP = 0x1C
; CSR registers
CSR_CSR = 0x00
CSR_IAB0 = 0x01
CSR_IAB1 = 0x02
CSR_IMR = 0x03
CSR_TFEAT = 0x04
CSR_EXTCTL1 = 0x05
CSR_DTBLLEN = 0x06
CSR_EXTCTL2 = 0x07
CSR_MAR0 = 0x08
CSR_MAR1 = 0x09
CSR_MAR2 = 0x0A
CSR_MAR3 = 0x0B
CSR_PAR0 = 0x0C
CSR_PAR1 = 0x0D
CSR_PAR2 = 0x0E
CSR_MODE = 0x0F
CSR_RXADDR0 = 0x18
CSR_RXADDR1 = 0x19
CSR_TXADDR0 = 0x1E
CSR_TXADDR1 = 0x1F
CSR_TXPOLL = 0x2F
CSR_RXPOLL = 0x31
CSR_RXRINGLEN = 0x4C
CSR_TXRINGLEN = 0x4E
CSR_DMACTL = 0x50
CSR_BUSTIMER = 0x52
CSR_MEMERRTIMEO = 0x64
CSR_ONNOWMISC = 0x74
CSR_ADVFEAT = 0x7A
CSR_MACCFG = 0x7D
CSR_CHIPID0 = 0x58
CSR_CHIPID1 = 0x59
; Control and Status Register (CSR0)
CSR_INIT = 1 shl 0
CSR_START = 1 shl 1
CSR_STOP = 1 shl 2
CSR_TX = 1 shl 3
CSR_TXON = 1 shl 4
CSR_RXON = 1 shl 5
CSR_INTEN = 1 shl 6
CSR_INTR = 1 shl 7
CSR_IDONE = 1 shl 8
CSR_TINT = 1 shl 9
CSR_RINT = 1 shl 10
CSR_MERR = 1 shl 11
CSR_MISS = 1 shl 12
CSR_CERR = 1 shl 13
; Interrupt masks and deferral control (CSR3)
IMR_BSWAP = 0x0004
IMR_ENMBA = 0x0008 ; enable modified backoff alg
IMR_DXMT2PD = 0x0010
IMR_LAPPEN = 0x0020 ; lookahead packet processing enb
IMR_DXSUFLO = 0x0040 ; disable TX stop on underflow
IMR_IDONE = 0x0100
IMR_TINT = 0x0200
IMR_RINT = 0x0400
IMR_MERR = 0x0800
IMR_MISS = 0x1000
IMR = IMR_IDONE ; IMR_TINT + IMR_RINT + IMR_MERR + IMR_MISS ;+ IMR_IDONE
; Test and features control (CSR4)
TFEAT_TXSTRTMASK = 0x0004
TFEAT_TXSTRT = 0x0008
TFEAT_RXCCOFLOWM = 0x0010 ; Rx collision counter oflow
TFEAT_RXCCOFLOW = 0x0020
TFEAT_UINT = 0x0040
TFEAT_UINTREQ = 0x0080
TFEAT_MISSOFLOWM = 0x0100
TFEAT_MISSOFLOW = 0x0200
TFEAT_STRIP_FCS = 0x0400
TFEAT_PAD_TX = 0x0800
TFEAT_TXDPOLL = 0x1000
TFEAT_DMAPLUS = 0x4000
; Extended control and interrupt 1 (CSR5)
EXTCTL1_SPND = 0x0001 ; suspend
EXTCTL1_MPMODE = 0x0002 ; magic packet mode
EXTCTL1_MPENB = 0x0004 ; magic packet enable
EXTCTL1_MPINTEN = 0x0008 ; magic packet interrupt enable
EXTCTL1_MPINT = 0x0010 ; magic packet interrupt
EXTCTL1_MPPLBA = 0x0020 ; magic packet phys. logical bcast
EXTCTL1_EXDEFEN = 0x0040 ; excessive deferral interrupt enb.
EXTCTL1_EXDEF = 0x0080 ; excessive deferral interrupt
EXTCTL1_SINTEN = 0x0400 ; system interrupt enable
EXTCTL1_SINT = 0x0800 ; system interrupt
EXTCTL1_LTINTEN = 0x4000 ; last TX interrupt enb
EXTCTL1_TXOKINTD = 0x8000 ; TX OK interrupt disable
; RX/TX descriptor len (CSR6)
DTBLLEN_RLEN = 0x0F00
DTBLLEN_TLEN = 0xF000
; Extended control and interrupt 2 (CSR7)
EXTCTL2_MIIPDTINTE = 0x0001
EXTCTL2_MIIPDTINT = 0x0002
EXTCTL2_MCCIINTE = 0x0004
EXTCTL2_MCCIINT = 0x0008
EXTCTL2_MCCINTE = 0x0010
EXTCTL2_MCCINT = 0x0020
EXTCTL2_MAPINTE = 0x0040
EXTCTL2_MAPINT = 0x0080
EXTCTL2_MREINTE = 0x0100
EXTCTL2_MREINT = 0x0200
EXTCTL2_STINTE = 0x0400
EXTCTL2_STINT = 0x0800
EXTCTL2_RXDPOLL = 0x1000
EXTCTL2_RDMD = 0x2000
EXTCTL2_RXFRTG = 0x4000
EXTCTL2_FASTSPNDE = 0x8000
; Mode (CSR15)
MODE_RXD = 0x0001 ; RX disable
MODE_TXD = 0x0002 ; TX disable
MODE_LOOP = 0x0004 ; loopback enable
MODE_TXCRCD = 0x0008
MODE_FORCECOLL = 0x0010
MODE_RETRYD = 0x0020
MODE_INTLOOP = 0x0040
MODE_PORTSEL = 0x0180
MODE_RXVPAD = 0x2000
MODE_RXNOBROAD = 0x4000
MODE_PROMISC = 0x8000
; BCR (Bus Control Registers)
BCR_MMRA = 0x00 ; Master Mode Read Active
BCR_MMW = 0x01 ; Master Mode Write Active
BCR_MISCCFG = 0x02
BCR_LED0 = 0x04
BCR_LED1 = 0x05
BCR_LED2 = 0x06
BCR_LED3 = 0x07
BCR_DUPLEX = 0x09
BCR_BUSCTL = 0x12
BCR_EECTL = 0x13
BCR_SSTYLE = 0x14
BCR_PCILAT = 0x16
BCR_PCISUBVENID = 0x17
BCR_PCISUBSYSID = 0x18
BCR_SRAMSIZE = 0x19
BCR_SRAMBOUND = 0x1A
BCR_SRAMCTL = 0x1B
BCR_MIICTL = 0x20
BCR_MIIADDR = 0x21
BCR_MIIDATA = 0x22
BCR_PCIVENID = 0x23
BCR_PCIPCAP = 0x24
BCR_DATA0 = 0x25
BCR_DATA1 = 0x26
BCR_DATA2 = 0x27
BCR_DATA3 = 0x28
BCR_DATA4 = 0x29
BCR_DATA5 = 0x2A
BCR_DATA6 = 0x2B
BCR_DATA7 = 0x2C
BCR_ONNOWPAT0 = 0x2D
BCR_ONNOWPAT1 = 0x2E
BCR_ONNOWPAT2 = 0x2F
BCR_PHYSEL = 0x31
; RX status register
RXSTAT_BPE = 0x0080 ; bus parity error
RXSTAT_ENP = 0x0100 ; end of packet
RXSTAT_STP = 0x0200 ; start of packet
RXSTAT_BUFF = 0x0400 ; buffer error
RXSTAT_CRC = 0x0800 ; CRC error
RXSTAT_OFLOW = 0x1000 ; rx overrun
RXSTAT_FRAM = 0x2000 ; framing error
RXSTAT_ERR = 0x4000 ; error summary
RXSTAT_OWN = 0x8000
; TX status register
TXSTAT_TRC = 0x0000000F ; transmit retries
TXSTAT_RTRY = 0x04000000 ; retry
TXSTAT_LCAR = 0x08000000 ; lost carrier
TXSTAT_LCOL = 0x10000000 ; late collision
TXSTAT_EXDEF = 0x20000000 ; excessive deferrals
TXSTAT_UFLOW = 0x40000000 ; transmit underrun
TXSTAT_BUFF = 0x80000000 ; buffer error
TXCTL_OWN = 0x8000
TXCTL_ERR = 0x4000 ; error summary
TXCTL_ADD_FCS = 0x2000 ; add FCS to pkt
TXCTL_MORE_LTINT = 0x1000
TXCTL_ONE = 0x0800
TXCTL_DEF = 0x0400
TXCTL_STP = 0x0200
TXCTL_ENP = 0x0100
TXCTL_BPE = 0x0080
TXCTL_MBO = 0x0000F000
TXCTL_BUFSZ = 0x00000FFF
;
MAX_PHYS = 32
virtual at ebx
device:
ETH_DEVICE
; device specific
rb 0x100-(($ - device) and 0xff) ; align 256
.private:
.mode_ dw ?
.tlen_rlen dw ?
.phys_addr dp ?
.reserved dw ?
.filter dq ?
.rx_ring_phys dd ?
.tx_ring_phys dd ?
rb 0x100-(($ - device) and 0xff) ; align 256
.rx_ring rb RX_RING_SIZE * descriptor.size
rb 0x100-(($ - device) and 0xff) ; align 256
.tx_ring rb TX_RING_SIZE * descriptor.size
.cur_rx db ?
.cur_tx db ?
.last_tx db ?
.options dd ?
.full_duplex db ?
.chip_version dw ?
.mii db ?
.ltint db ?
.dxsuflo db ?
.fset db ?
.fdx db ?
.io_addr dd ?
.irq_line db ?
.pci_bus dd ?
.pci_dev dd ?
.phy dw ?
.read_csr dd ?
.write_csr dd ?
.read_bcr dd ?
.write_bcr dd ?
.read_rap dd ?
.write_rap dd ?
.sw_reset dd ?
device_size = $ - device
end virtual
struc descriptor {
.base dd ?
.length dw ?
.status dw ?
.msg_length dw ?
.misc dw ?
.virtual dd ?
.size:
}
virtual at 0
descriptor descriptor
end virtual
section '.flat' code readable align 16
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; proc START ;;
;; ;;
;; (standard driver proc) ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
proc START stdcall, state:dword
cmp [state], 1
jne .exit
.entry:
DEBUGF 1,"Loading driver\n"
stdcall RegService, my_service, service_proc
ret
.fail:
.exit:
xor eax, eax
ret
endp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; proc SERVICE_PROC ;;
;; ;;
;; (standard driver proc) ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
proc service_proc stdcall, ioctl:dword
mov edx, [ioctl]
mov eax, [IOCTL.io_code]
;------------------------------------------------------
cmp eax, 0 ;SRV_GETVERSION
jne @F
cmp [IOCTL.out_size], 4
jb .fail
mov eax, [IOCTL.output]
mov [eax], dword API_VERSION
xor eax, eax
ret
;------------------------------------------------------
@@:
cmp eax, 1 ;SRV_HOOK
jne .fail
cmp [IOCTL.inp_size], 3 ; Data input must be at least 3 bytes
jb .fail
mov eax, [IOCTL.input]
cmp byte [eax], 1 ; 1 means device number and bus number (pci) are given
jne .fail ; other types arent supported for this card yet
; check if the device is already listed
mov ecx, [devices]
test ecx, ecx
jz .firstdevice
mov esi, device_list
; mov eax, [IOCTL.input] ; get the pci bus and device numbers
mov ax , [eax+1] ;
.nextdevice:
mov ebx, [esi]
cmp al, byte[device.pci_bus]
jne @f
cmp ah, byte[device.pci_dev]
je .find_devicenum ; Device is already loaded, let's find it's device number
@@:
add esi, 4
loop .nextdevice
; This device doesnt have its own eth_device structure yet, lets create one
.firstdevice:
cmp [devices], MAX_DEVICES ; First check if the driver can handle one more card
jae .fail
allocate_and_clear ebx, device_size, .fail
; Fill in the direct call addresses into the struct
mov [device.reset], reset
mov [device.transmit], transmit
mov [device.unload], unload
mov [device.name], my_service
; save the pci bus and device numbers
mov eax, [IOCTL.input]
movzx ecx, byte[eax+1]
mov [device.pci_bus], ecx
movzx ecx, byte[eax+2]
mov [device.pci_dev], ecx
; Now, it's time to find the base io addres of the PCI device
PCI_find_io
; We've found the io address, find IRQ now
PCI_find_irq
DEBUGF 1,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\
[device.pci_dev]:1,[device.pci_bus]:1,[device.irq_line]:1,[device.io_addr]:4
; Ok, the eth_device structure is ready, let's probe the device
; Because initialization fires IRQ, IRQ handler must be aware of this device
mov eax, [devices] ; Add the device structure to our device list
mov [device_list+4*eax], ebx ; (IRQ handler uses this list to find device)
inc [devices] ;
call probe ; this function will output in eax
test eax, eax
jnz .destroy ; If an error occured, exit
mov [device.type], NET_TYPE_ETH
call NetRegDev
cmp eax, -1
je .destroy
ret
; If the device was already loaded, find the device number and return it in eax
.find_devicenum:
DEBUGF 1,"Trying to find device number of already registered device\n"
call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx
; into a device number in edi
mov eax, edi ; Application wants it in eax instead
DEBUGF 1,"Kernel says: %u\n", eax
ret
; If an error occured, remove all allocated data and exit (returning -1 in eax)
.destroy:
; todo: reset device into virgin state
dec [devices]
.err:
DEBUGF 2,"Error, removing all data !\n"
stdcall KernelFree, ebx
.fail:
or eax, -1
ret
;------------------------------------------------------
endp
;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
;; ;;
;; Actual Hardware dependent code starts here ;;
;; ;;
;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
align 4
unload:
; TODO: (in this particular order)
;
; - Stop the device
; - Detach int handler
; - Remove device from local list (RTL8139_LIST)
; - call unregister function in kernel
; - Remove all allocated structures and buffers the card used
or eax,-1
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; probe: enables the device (if it really is a PCnet device)
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
probe:
mov edx, [device.io_addr]
call wio_reset
xor ecx, ecx
call wio_read_csr
cmp eax, 4
jne .try_dwio
; Try Word I/O
mov ax, 88
add edx, WIO_RAP
out dx, ax
nop
nop
in ax, dx
sub edx, WIO_RAP
cmp ax, 88
jne .try_dwio
call switch_to_wio
jmp .L1
.try_dwio:
call dwio_reset
xor ecx, ecx
call dwio_read_csr
cmp eax, 4
jne .no_dev
; Try Dword I/O
add edx, DWIO_RAP
mov eax, 88
out dx, eax
nop
nop
in eax, dx
sub edx, DWIO_RAP
and eax, 0xffff
cmp eax, 88
jne .no_dev
call switch_to_dwio
jmp .L1
.no_dev:
DEBUGF 1,"device not found!\n"
mov eax, 1
ret
.L1:
mov ecx, CSR_CHIPID0
call [device.read_csr]
mov esi, eax
shr esi, 12
and ax, 0xfff
cmp ax, 3
jne .no_dev
mov ecx, CSR_CHIPID1
call [device.read_csr]
shl eax, 4
or eax, esi
mov [device.chip_version], ax
mov [device.fdx], 0
mov [device.mii], 0
mov [device.fset], 0
mov [device.dxsuflo], 0
mov [device.ltint], 0
cmp ax, 0x2420
je .L2
cmp ax, 0x2430
je .L2
mov [device.fdx], 1
cmp ax, 0x2621
je .L4
cmp ax, 0x2623
je .L5
cmp ax, 0x2624
je .L6
cmp ax, 0x2625
je .L7
cmp ax, 0x2626
je .L8
cmp ax, 0x2627
je .L9
DEBUGF 1,"Invalid chip rev\n"
jmp .no_dev
.L2:
mov [device.name], device_l2
jmp .L10
.L4:
mov [device.name], device_l4
; mov [device.fdx], 1
jmp .L10
.L5:
mov [device.name], device_l5
; mov [device.fdx], 1
mov [device.mii], 1
mov [device.fset], 1
mov [device.ltint], 1
jmp .L10
.L6:
mov [device.name], device_l6
; mov [device.fdx], 1
mov [device.mii], 1
mov [device.fset], 1
jmp .L10
.L7:
mov [device.name], device_l7
; mov [device.fdx], 1
mov [device.mii], 1
jmp .L10
.L8:
mov [device.name], device_l8
; mov [device.fdx], 1
mov ecx, CSR_RXPOLL
call dword [device.read_bcr]
call dword [device.write_bcr]
jmp .L10
.L9:
mov [device.name], device_l9
; mov [device.fdx], 1
mov [device.mii], 1
.L10:
DEBUGF 1,"device name: %s\n", [device.name]
cmp [device.fset], 1
jne .L11
mov ecx, BCR_BUSCTL
call [device.read_bcr]
or eax, 0x800
call [device.write_bcr]
mov ecx, CSR_DMACTL
call [device.read_csr]
; and eax, 0xc00
; or eax, 0xc00
mov eax, 0xc00
call [device.write_csr]
mov [device.dxsuflo],1
mov [device.ltint],1
.L11:
PCI_make_bus_master
mov [device.options], PORT_ASEL
mov [device.mode_], MODE_RXD + MODE_TXD ; disable receive and transmit
mov [device.tlen_rlen], (TX_RING_LEN_BITS or RX_RING_LEN_BITS)
mov dword [device.filter], 0
mov dword [device.filter+4], 0
align 4
reset:
; attach int handler
movzx eax, [device.irq_line]
DEBUGF 1,"Attaching int handler to irq %x\n", eax:1
stdcall AttachIntHandler, eax, int_handler, dword 0
test eax, eax
jnz @f
DEBUGF 2,"Could not attach int handler!\n"
; or eax, -1
; ret
@@:
mov edx, [device.io_addr]
call [device.sw_reset]
; Switch pcnet32 to 32bit mode
mov ecx, BCR_SSTYLE
mov eax, 2
call [device.write_bcr]
; set/reset autoselect bit
mov ecx, BCR_MISCCFG
call [device.read_bcr]
and eax, not 2
test [device.options], PORT_ASEL
jz @f
or eax, 2
@@:
call [device.write_bcr]
; Handle full duplex setting
cmp byte [device.full_duplex], 0
je .duplex_ok
mov ecx, BCR_DUPLEX
call [device.read_bcr]
and eax, not 3
test [device.options], PORT_FD
jz @f
or eax, 1
cmp [device.options], PORT_FD or PORT_AUI
jne .set_duplex
or eax, 2
jmp .set_duplex
@@:
test [device.options], PORT_ASEL
jz .set_duplex
cmp [device.chip_version], 0x2627
jne .set_duplex
or eax, 3
.set_duplex:
mov ecx, BCR_DUPLEX
call [device.write_bcr]
.duplex_ok:
; set/reset GPSI bit in test register
mov ecx, 124
call [device.read_csr]
mov ecx, [device.options]
and ecx, PORT_PORTSEL
cmp ecx, PORT_GPSI
jne @f
or eax, 0x10
@@:
call [device.write_csr]
cmp [device.mii], 0
je .L6
test [device.options], PORT_ASEL
jnz .L6
mov ecx, BCR_MIICTL
call [device.read_bcr]
and eax, not 0x38
test [device.options], PORT_FD
jz @f
or eax, 0x10
@@:
test [device.options], PORT_100
jz @f
or eax, 0x08
@@:
call [device.write_bcr]
jmp .L9
.L6:
test [device.options], PORT_ASEL
jz .L9
mov ecx, BCR_MIICTL
DEBUGF 1,"ASEL, enable auto-negotiation\n"
call [device.read_bcr]
and eax, not 0x98
or eax, 0x20
call [device.write_bcr]
.L9:
cmp [device.ltint], 0
je @f
mov ecx, 5
call [device.read_csr]
or eax, (1 shl 14)
call [device.write_csr]
@@:
mov eax, [device.options]
and eax, PORT_PORTSEL
shl eax, 7
mov [device.mode_], ax
mov dword [device.filter], -1
mov dword [device.filter+4], -1
;-----------------------------
test [device.mii], 1
jz .no_mii
mov [device.phy], 0
.mii_loop:
mov ecx, MII_PHYSID1
call mdio_read
cmp ax, 0xffff
je .next
DEBUGF 1, "0x%x\n", ax
mov ecx, MII_PHYSID2
call mdio_read
cmp ax, 0xffff
je .next
DEBUGF 1, "0x%x\n", ax
jmp .got_phy
cmp [device.phy], 31
jne .next
mov ax, [device.chip_version]
inc ax
and ax, 0xfffe
cmp ax, 0x2624 ; 79c971 & 79c972 have phantom phy at id 31
je .got_phy
.next:
inc [device.phy]
cmp [device.phy], MAX_PHYS
jb .mii_loop
DEBUGF 2, "No PHY found!\n"
or eax, -1
ret
.got_phy:
DEBUGF 1, "Found PHY at 0x%x\n", [device.phy]:4
.no_mii:
;-----------------------------------------------
call read_mac
lea esi, [device.mac]
lea edi, [device.phys_addr]
movsd
movsw
call init_ring
mov edx, [device.io_addr] ; init ring destroys edx
lea eax, [device.private]
GetRealAddr
push eax
and eax, 0xffff
mov ecx, 1
call [device.write_csr]
pop eax
shr eax, 16
mov ecx, 2
call [device.write_csr]
mov ecx, 4
mov eax, 0x0915
call [device.write_csr]
; Set the interrupt mask
mov ecx, CSR_IMR
mov eax, IMR
call [device.write_csr]
; Initialise the device
xor ecx, ecx
mov eax, CSR_INIT
call [device.write_csr]
mov esi, 100
; xor ecx, ecx
@@:
call [device.read_csr]
test ax, CSR_IDONE
jnz @f
dec esi
jnz @r
DEBUGF 2,"Initialize timeout!\n"
@@:
; Start the device and enable interrupts
xor ecx, ecx
mov eax, CSR_START + CSR_INTEN
call [device.write_csr]
; Set the mtu, kernel will be able to send now
mov [device.mtu], 1514
; get link status
mov [device.state], ETH_LINK_UNKOWN
call check_media
DEBUGF 1,"reset complete\n"
xor eax, eax
ret
align 4
init_ring:
DEBUGF 1,"init ring\n"
lea edi, [device.rx_ring]
mov eax, edi
GetRealAddr
mov [device.rx_ring_phys], eax
mov ecx, RX_RING_SIZE
.rx_init:
push ecx
stdcall KernelAlloc, PKT_BUF_SZ
pop ecx
mov [edi + descriptor.virtual], eax
GetRealAddr
mov [edi + descriptor.base], eax
mov [edi + descriptor.length], - PKT_BUF_SZ
mov [edi + descriptor.status], RXSTAT_OWN
mov dword [edi + descriptor.msg_length], 0 ; also clears misc field
add edi, descriptor.size
dec ecx
jnz .rx_init
lea edi, [device.tx_ring]
mov eax, edi
GetRealAddr
mov [device.tx_ring_phys], eax
mov ecx, TX_RING_SIZE
.tx_init:
mov [edi + descriptor.status], 0
add edi, descriptor.size
dec ecx
jnz .tx_init
mov [device.tlen_rlen], (TX_RING_LEN_BITS or RX_RING_LEN_BITS)
mov [device.cur_tx], 0
mov [device.last_tx], 0
mov [device.cur_rx], 0
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Transmit ;;
;; ;;
;; In: buffer pointer in [esp+4] ;;
;; size of buffer in [esp+8] ;;
;; pointer to device structure in ebx ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
transmit:
DEBUGF 1,"Transmitting packet, buffer:%x, size:%u\n", [esp+4], [esp+8]
mov eax, [esp+4]
DEBUGF 1,"To: %x-%x-%x-%x-%x-%x From: %x-%x-%x-%x-%x-%x Type:%x%x\n",\
[eax+00]:2,[eax+01]:2,[eax+02]:2,[eax+03]:2,[eax+04]:2,[eax+05]:2,\
[eax+06]:2,[eax+07]:2,[eax+08]:2,[eax+09]:2,[eax+10]:2,[eax+11]:2,\
[eax+13]:2,[eax+12]:2
cmp dword [esp+8], 1514
ja .nospace ; packet is too long
cmp dword [esp+8], 60
jb .nospace ; packet is too short
; check descriptor
lea edi, [device.tx_ring]
movzx eax, [device.cur_tx]
shl eax, 4
add edi, eax
test [edi + descriptor.status], TXCTL_OWN
jnz .nospace
; descriptor is free, use it
mov eax, [esp+4]
mov [edi + descriptor.virtual], eax
GetRealAddr
mov [edi + descriptor.base], eax
; set length
mov eax, [esp+8]
neg eax
mov [edi + descriptor.length], ax
; put to transfer queue
mov [edi + descriptor.status], TXCTL_OWN + TXCTL_STP + TXCTL_ENP
; trigger an immediate send
mov edx, [device.io_addr]
xor ecx, ecx ; CSR0
call [device.read_csr]
or eax, CSR_TX
call [device.write_csr]
; get next descriptor 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, ...
inc [device.cur_tx]
and [device.cur_tx], TX_RING_SIZE - 1
; Update stats
inc [device.packets_tx]
mov eax, [esp+8]
add dword [device.bytes_tx], eax
adc dword [device.bytes_tx + 4], 0
.finish:
DEBUGF 1," - Done!\n"
xor eax, eax
ret 8
.nospace:
DEBUGF 2, "ERROR: no free transmit descriptors\n"
stdcall KernelFree, [esp+4]
or eax, -1
ret 8
;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Interrupt handler ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;
align 4
int_handler:
push ebx esi edi
DEBUGF 1,"INT\n"
; find pointer of device wich made IRQ occur
mov ecx, [devices]
test ecx, ecx
jz .nothing
mov esi, device_list
.nextdevice:
mov ebx, [esi]
mov edx, [device.io_addr]
push ecx
xor ecx, ecx ; CSR0
call [device.read_csr] ; get IRQ reason
call [device.write_csr] ; write it back to ACK
pop ecx
and ax, CSR_RINT or CSR_TINT
jnz .got_it
.continue:
add esi, 4
dec ecx
jnz .nextdevice
.nothing:
pop edi esi ebx
xor eax, eax
ret
.got_it:
DEBUGF 1,"Device: %x status: %x\n", ebx, eax:2
push ax
test ax, CSR_RINT
jz .not_receive
push ebx
.rx_loop:
pop ebx
movzx eax, [device.cur_rx]
shl eax, 4
lea edi, [device.rx_ring]
add edi, eax ; edi now points to current rx ring entry
mov ax, [edi + descriptor.status]
DEBUGF 1,"RX packet status: %x\n", eax:4
test ax, RXSTAT_OWN ; If this bit is set, the controller OWN's the packet, if not, we do
jnz .not_receive
test ax, RXSTAT_ENP
jz .not_receive
test ax, RXSTAT_STP
jz .not_receive
movzx ecx, [edi + descriptor.msg_length] ; get packet length in ecx
sub ecx, 4 ;
; Set pointers for ETH_input
push ebx
push .rx_loop ; return address
push ecx ; packet size
push [edi + descriptor.virtual] ; packet address
; Update stats
add dword [device.bytes_rx], ecx
adc dword [device.bytes_rx + 4], 0
inc [device.packets_rx]
; now allocate a new buffer
stdcall KernelAlloc, PKT_BUF_SZ ; Allocate a buffer for the next packet
mov [edi + descriptor.virtual], eax ; set virtual address
GetRealAddr
mov [edi + descriptor.base], eax ; and real address
; mov word [edi + descriptor.length], - PKT_BUF_SZ
mov [edi + descriptor.status], RXSTAT_OWN ; give it back to PCnet controller
inc [device.cur_rx] ; set next receive descriptor
and [device.cur_rx], RX_RING_SIZE - 1
jmp Eth_input
.not_receive:
pop ax
test ax, CSR_TINT
jz .not_transmit
.tx_loop:
lea edi, [device.tx_ring]
movzx eax, [device.last_tx]
shl eax, 4
add edi, eax
test [edi + descriptor.status], TXCTL_OWN
jnz .not_transmit
mov eax, [edi + descriptor.virtual]
test eax, eax
jz .not_transmit
mov [edi + descriptor.virtual], 0
DEBUGF 1,"Removing packet %x from memory\n", eax
stdcall KernelFree, eax
inc [device.last_tx]
and [device.last_tx], TX_RING_SIZE - 1
jmp .tx_loop
.not_transmit:
pop edi esi ebx
xor eax, eax
inc eax
ret
;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Write MAC address ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;
align 4
write_mac: ; in: mac pushed onto stack (as 3 words)
DEBUGF 1,"Writing MAC: %x-%x-%x-%x-%x-%x",[esp+0]:2,[esp+1]:2,[esp+2]:2,[esp+3]:2,[esp+4]:2,[esp+5]:2
mov edx, [device.io_addr]
add dx, 2
xor eax, eax
mov ecx, CSR_PAR0
@@:
pop ax
call [device.write_csr]
DEBUGF 1,"."
inc ecx
cmp ecx, CSR_PAR2
jb @r
DEBUGF 1,"\n"
; Notice this procedure does not ret, but continues to read_mac instead.
;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Read MAC address ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;
align 4
read_mac:
DEBUGF 1,"Reading MAC:\n"
mov edx, [device.io_addr]
add dx, 6
@@:
dec dx
dec dx
in ax, dx
push ax
cmp edx, [device.io_addr]
ja @r
DEBUGF 1,"%x-%x-%x-%x-%x-%x\n",[esp+0]:2,[esp+1]:2,[esp+2]:2,[esp+3]:2,[esp+4]:2,[esp+5]:2
lea edi, [device.mac]
pop ax
stosw
pop ax
stosw
pop ax
stosw
ret
align 4
switch_to_wio:
DEBUGF 1,"Switching to 16-bit mode\n"
mov [device.read_csr], wio_read_csr
mov [device.write_csr], wio_write_csr
mov [device.read_bcr], wio_read_bcr
mov [device.write_bcr], wio_write_bcr
mov [device.read_rap], wio_read_rap
mov [device.write_rap], wio_write_rap
mov [device.sw_reset], wio_reset
ret
align 4
switch_to_dwio:
DEBUGF 1,"Switching to 32-bit mode\n"
mov [device.read_csr], dwio_read_csr
mov [device.write_csr], dwio_write_csr
mov [device.read_bcr], dwio_read_bcr
mov [device.write_bcr], dwio_write_bcr
mov [device.read_rap], dwio_read_rap
mov [device.write_rap], dwio_write_rap
mov [device.sw_reset], dwio_reset
ret
; ecx - index
; return:
; eax - data
align 4
wio_read_csr:
add edx, WIO_RAP
mov ax, cx
out dx, ax
add edx, WIO_RDP - WIO_RAP
in ax, dx
and eax, 0xffff
sub edx, WIO_RDP
ret
; eax - data
; ecx - index
align 4
wio_write_csr:
add edx, WIO_RAP
xchg eax, ecx
out dx, ax
xchg eax, ecx
add edx, WIO_RDP - WIO_RAP
out dx, ax
sub edx, WIO_RDP
ret
; ecx - index
; return:
; eax - data
align 4
wio_read_bcr:
add edx, WIO_RAP
mov ax, cx
out dx, ax
add edx, WIO_BDP - WIO_RAP
in ax, dx
and eax, 0xffff
sub edx, WIO_BDP
ret
; eax - data
; ecx - index
align 4
wio_write_bcr:
add edx, WIO_RAP
xchg eax, ecx
out dx, ax
xchg eax, ecx
add edx, WIO_BDP - WIO_RAP
out dx, ax
sub edx, WIO_BDP
ret
align 4
wio_read_rap:
add edx, WIO_RAP
in ax, dx
and eax, 0xffff
sub edx, WIO_RAP
ret
; eax - val
align 4
wio_write_rap:
add edx, WIO_RAP
out dx, ax
sub edx, WIO_RAP
ret
align 4
wio_reset:
push eax
add edx, WIO_RESET
in ax, dx
pop eax
sub edx, WIO_RESET
ret
; ecx - index
; return:
; eax - data
align 4
dwio_read_csr:
add edx, DWIO_RAP
mov eax, ecx
out dx, eax
add edx, DWIO_RDP - DWIO_RAP
in eax, dx
and eax, 0xffff
sub edx, DWIO_RDP
ret
; ecx - index
; eax - data
align 4
dwio_write_csr:
add edx, DWIO_RAP
xchg eax, ecx
out dx, eax
add edx, DWIO_RDP - DWIO_RAP
xchg eax, ecx
out dx, eax
sub edx, DWIO_RDP
ret
; ecx - index
; return:
; eax - data
align 4
dwio_read_bcr:
add edx, DWIO_RAP
mov eax, ecx
out dx, eax
add edx, DWIO_BDP - DWIO_RAP
in eax, dx
and eax, 0xffff
sub edx, DWIO_BDP
ret
; ecx - index
; eax - data
align 4
dwio_write_bcr:
add edx, DWIO_RAP
xchg eax, ecx
out dx, eax
add edx, DWIO_BDP - DWIO_RAP
xchg eax, ecx
out dx, eax
sub edx, DWIO_BDP
ret
align 4
dwio_read_rap:
add edx, DWIO_RAP
in eax, dx
and eax, 0xffff
sub edx, DWIO_RAP
ret
; eax - val
align 4
dwio_write_rap:
add edx, DWIO_RAP
out dx, eax
sub edx, DWIO_RAP
ret
align 4
dwio_reset:
push eax
add edx, DWIO_RESET
in eax, dx
pop eax
sub edx, DWIO_RESET
ret
align 4
mdio_read:
and ecx, 0x1f
mov ax, [device.phy]
and ax, 0x1f
shl ax, 5
or ax, cx
mov ecx, BCR_MIIADDR
call [device.write_bcr]
mov ecx, BCR_MIIDATA
call [device.read_bcr]
ret
align 4
mdio_write:
push eax
and ecx, 0x1f
mov ax, [device.phy]
and ax, 0x1f
shl ax, 5
or ax, cx
mov ecx, BCR_MIIADDR
call [device.write_bcr]
pop eax
mov ecx, BCR_MIIDATA
call [device.write_bcr]
ret
align 4
check_media:
DEBUGF 1, "check_media\n"
test [device.mii], 1
jnz mii_link_ok
mov ecx, BCR_LED0
call [device.read_bcr]
cmp eax, 0xc0
DEBUGF 1, "link status=0x%x\n", ax
ret
; End of code
align 4 ; Place all initialised data here
devices dd 0
version dd (5 shl 16) or (API_VERSION and 0xFFFF)
my_service db 'PCnet',0 ; max 16 chars include zero
device_l2 db "PCnet/PCI 79C970",0
device_l4 db "PCnet/PCI II 79C970A",0
device_l5 db "PCnet/FAST 79C971",0
device_l6 db "PCnet/FAST+ 79C972",0
device_l7 db "PCnet/FAST III 79C973",0
device_l8 db "PCnet/Home 79C978",0
device_l9 db "PCnet/FAST III 79C975",0
options_mapping:
dd PORT_ASEL ; 0 Auto-select
dd PORT_AUI ; 1 BNC/AUI
dd PORT_AUI ; 2 AUI/BNC
dd PORT_ASEL ; 3 not supported
dd PORT_10BT or PORT_FD ; 4 10baseT-FD
dd PORT_ASEL ; 5 not supported
dd PORT_ASEL ; 6 not supported
dd PORT_ASEL ; 7 not supported
dd PORT_ASEL ; 8 not supported
dd PORT_MII ; 9 MII 10baseT
dd PORT_MII or PORT_FD ; 10 MII 10baseT-FD
dd PORT_MII ; 11 MII (autosel)
dd PORT_10BT ; 12 10BaseT
dd PORT_MII or PORT_100 ; 13 MII 100BaseTx
dd PORT_MII or PORT_100 or PORT_FD ; 14 MII 100BaseTx-FD
dd PORT_ASEL ; 15 not supported
include_debug_strings ; All data wich FDO uses will be included here
section '.data' data readable writable align 16 ; place all uninitialized data place here
device_list rd MAX_DEVICES ; This list contains all pointers to device structures the driver is handling
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