Subversion Repositories Kolibri OS

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;                                                                  ;;

;; Copyright (C) KolibriOS team 2004-2010. All rights reserved.     ;;

;; Distributed under terms of the GNU General Public License        ;;

;;                                                                  ;;

;;  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                                 ;;

;;                                                                  ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

; $Revision: 2981 $

format MS COFF

        API_VERSION             =   0x01000100

        DEBUG                   =   1

        __DEBUG__               =   1

        __DEBUG_LEVEL__         =   1

        MAX_DEVICES =   4

        MAX_ETH_FRAME_SIZE =   1514

include 'proc32.inc'

include 'imports.inc'

include 'fdo.inc'

include 'netdrv.inc'

public START

public service_proc

public version

virtual at ebx

        device:

        ETH_DEVICE

; device specific

      .private:

      .mode_            dw ?

      .tlen_rlen        dw ?

      .phys_addr        dp ?

      .reserved         dw ?

      .filter           dq ?

      .rx_ring_phys     dd ?

      .tx_ring_phys     dd ?

      .cur_rx           db ?

      .cur_tx           db ?

      .dirty_rx         dd ?

      .dirty_tx         dd ?

      .tx_full          db ?

      .options          dd ?

      .full_duplex      db ?

      .chip_version     dd ?

      .mii              db ?

      .ltint            db ?

      .dxsuflo          db ?

      .fset             db ?

      .fdx              db ?

      .rx_buffer        dd ?

      .tx_buffer        dd ?

      .io_addr          dd ?

      .irq_line         db ?

      .pci_bus          db ?

      .pci_dev          db ?

      .access_read_csr          dd ?

      .access_write_csr         dd ?

      .access_read_bcr          dd ?

      .access_write_bcr         dd ?

      .access_read_rap          dd ?

      .access_write_rap         dd ?

      .access_reset             dd ?

      device_size       = $ - device

end virtual

struc buf_head {

        .base           dd ?

        .length         dw ?

        .status         dw ?

        .msg_length     dw ?

        .misc           dw ?

        .reserved       dd ?

        .size:

}

virtual at 0

 buf_head buf_head

end virtual

        PCNET_PORT_AUI                =   0x00

        PCNET_PORT_10BT               =   0x01

        PCNET_PORT_GPSI               =   0x02

        PCNET_PORT_MII                =   0x03

        PCNET_PORT_PORTSEL            =   0x03

        PCNET_PORT_ASEL               =   0x04

        PCNET_PORT_100                =   0x40

        PCNET_PORT_FD                 =   0x80

        PCNET_DMA_MASK                =   0xffffffff

        PCNET_LOG_TX_BUFFERS          =   2

        PCNET_LOG_RX_BUFFERS          =   2

        PCNET_TX_RING_SIZE            =   4

        PCNET_TX_RING_MOD_MASK        =   (PCNET_TX_RING_SIZE-1)

        PCNET_TX_RING_LEN_BITS        =   (PCNET_LOG_TX_BUFFERS shl 12)

        PCNET_RX_RING_SIZE            =   4

        PCNET_RX_RING_MOD_MASK        =   (PCNET_RX_RING_SIZE-1)

        PCNET_RX_RING_LEN_BITS        =   (PCNET_LOG_RX_BUFFERS shl 4)

        PCNET_PKT_BUF_SZ              =   1544

        PCNET_PKT_BUF_SZ_NEG          =   0xf9f8

        PCNET_WIO_RDP                 =   0x10

        PCNET_WIO_RAP                 =   0x12

        PCNET_WIO_RESET               =   0x14

        PCNET_WIO_BDP                 =   0x16

        PCNET_DWIO_RDP                =   0x10

        PCNET_DWIO_RAP                =   0x14

        PCNET_DWIO_RESET              =   0x18

        PCNET_DWIO_BDP                =   0x1C

        PCNET_TOTAL_SIZE              =   0x20

; CSR registers

        PCNET_CSR_CSR                 =   0x00

        PCNET_CSR_IAB0                =   0x01

        PCNET_CSR_IAB1                =   0x02

        PCNET_CSR_IMR                 =   0x03

        PCNET_CSR_TFEAT               =   0x04

        PCNET_CSR_EXTCTL1             =   0x05

        PCNET_CSR_DTBLLEN             =   0x06

        PCNET_CSR_EXTCTL2             =   0x07

        PCNET_CSR_MAR0                =   0x08

        PCNET_CSR_MAR1                =   0x09

        PCNET_CSR_MAR2                =   0x0A

        PCNET_CSR_MAR3                =   0x0B

        PCNET_CSR_PAR0                =   0x0C

        PCNET_CSR_PAR1                =   0x0D

        PCNET_CSR_PAR2                =   0x0E

        PCNET_CSR_MODE                =   0x0F

        PCNET_CSR_RXADDR0             =   0x18

        PCNET_CSR_RXADDR1             =   0x19

        PCNET_CSR_TXADDR0             =   0x1E

        PCNET_CSR_TXADDR1             =   0x1F

        PCNET_CSR_TXPOLL              =   0x2F

        PCNET_CSR_RXPOLL              =   0x31

        PCNET_CSR_RXRINGLEN           =   0x4C

        PCNET_CSR_TXRINGLEN           =   0x4E

        PCNET_CSR_DMACTL              =   0x50

        PCNET_CSR_BUSTIMER            =   0x52

        PCNET_CSR_MEMERRTIMEO         =   0x64

        PCNET_CSR_ONNOWMISC           =   0x74

        PCNET_CSR_ADVFEAT             =   0x7A

        PCNET_CSR_MACCFG              =   0x7D

        PCNET_CSR_CHIPID0             =   0x58

        PCNET_CSR_CHIPID1             =   0x59

; Control and Status Register (CSR0)

        PCNET_CSR_INIT                =   1 shl 0

        PCNET_CSR_START               =   1 shl 1

        PCNET_CSR_STOP                =   1 shl 2

        PCNET_CSR_TX                  =   1 shl 3

        PCNET_CSR_TXON                =   1 shl 4

        PCNET_CSR_RXON                =   1 shl 5

        PCNET_CSR_INTEN               =   1 shl 6

        PCNET_CSR_INTR                =   1 shl 7

        PCNET_CSR_IDONE               =   1 shl 8

        PCNET_CSR_TINT                =   1 shl 9

        PCNET_CSR_RINT                =   1 shl 10

        PCNET_CSR_MERR                =   1 shl 11

        PCNET_CSR_MISS                =   1 shl 12

        PCNET_CSR_CERR                =   1 shl 13

; Interrupt masks and deferral control (CSR3)

        PCNET_IMR_BSWAP               =   0x0004

        PCNET_IMR_ENMBA               =   0x0008  ; enable modified backoff alg

        PCNET_IMR_DXMT2PD             =   0x0010

        PCNET_IMR_LAPPEN              =   0x0020  ; lookahead packet processing enb

        PCNET_IMR_DXSUFLO             =   0x0040  ; disable TX stop on underflow

        PCNET_IMR_IDONE               =   0x0100

        PCNET_IMR_TINT                =   0x0200

        PCNET_IMR_RINT                =   0x0400

        PCNET_IMR_MERR                =   0x0800

        PCNET_IMR_MISS                =   0x1000

        PCNET_IMR                     =   PCNET_IMR_TINT+PCNET_IMR_RINT+PCNET_IMR_IDONE+PCNET_IMR_MERR+PCNET_IMR_MISS

; Test and features control (CSR4)

        PCNET_TFEAT_TXSTRTMASK        =   0x0004

        PCNET_TFEAT_TXSTRT            =   0x0008

        PCNET_TFEAT_RXCCOFLOWM        =   0x0010  ; Rx collision counter oflow

        PCNET_TFEAT_RXCCOFLOW         =   0x0020

        PCNET_TFEAT_UINT              =   0x0040

        PCNET_TFEAT_UINTREQ           =   0x0080

        PCNET_TFEAT_MISSOFLOWM        =   0x0100

        PCNET_TFEAT_MISSOFLOW         =   0x0200

        PCNET_TFEAT_STRIP_FCS         =   0x0400

        PCNET_TFEAT_PAD_TX            =   0x0800

        PCNET_TFEAT_TXDPOLL           =   0x1000

        PCNET_TFEAT_DMAPLUS           =   0x4000

; Extended control and interrupt 1 (CSR5)

        PCNET_EXTCTL1_SPND            =   0x0001  ; suspend

        PCNET_EXTCTL1_MPMODE          =   0x0002  ; magic packet mode

        PCNET_EXTCTL1_MPENB           =   0x0004  ; magic packet enable

        PCNET_EXTCTL1_MPINTEN         =   0x0008  ; magic packet interrupt enable

        PCNET_EXTCTL1_MPINT           =   0x0010  ; magic packet interrupt

        PCNET_EXTCTL1_MPPLBA          =   0x0020  ; magic packet phys. logical bcast

        PCNET_EXTCTL1_EXDEFEN         =   0x0040  ; excessive deferral interrupt enb.

        PCNET_EXTCTL1_EXDEF           =   0x0080  ; excessive deferral interrupt

        PCNET_EXTCTL1_SINTEN          =   0x0400  ; system interrupt enable

        PCNET_EXTCTL1_SINT            =   0x0800  ; system interrupt

        PCNET_EXTCTL1_LTINTEN         =   0x4000  ; last TX interrupt enb

        PCNET_EXTCTL1_TXOKINTD        =   0x8000  ; TX OK interrupt disable

; RX/TX descriptor len (CSR6)

        PCNET_DTBLLEN_RLEN            =   0x0F00

        PCNET_DTBLLEN_TLEN            =   0xF000

; Extended control and interrupt 2 (CSR7)

        PCNET_EXTCTL2_MIIPDTINTE      =   0x0001

        PCNET_EXTCTL2_MIIPDTINT       =   0x0002

        PCNET_EXTCTL2_MCCIINTE        =   0x0004

        PCNET_EXTCTL2_MCCIINT         =   0x0008

        PCNET_EXTCTL2_MCCINTE         =   0x0010

        PCNET_EXTCTL2_MCCINT          =   0x0020

        PCNET_EXTCTL2_MAPINTE         =   0x0040

        PCNET_EXTCTL2_MAPINT          =   0x0080

        PCNET_EXTCTL2_MREINTE         =   0x0100

        PCNET_EXTCTL2_MREINT          =   0x0200

        PCNET_EXTCTL2_STINTE          =   0x0400

        PCNET_EXTCTL2_STINT           =   0x0800

        PCNET_EXTCTL2_RXDPOLL         =   0x1000

        PCNET_EXTCTL2_RDMD            =   0x2000

        PCNET_EXTCTL2_RXFRTG          =   0x4000

        PCNET_EXTCTL2_FASTSPNDE       =   0x8000

; Mode (CSR15)

        PCNET_MODE_RXD                =   0x0001  ; RX disable

        PCNET_MODE_TXD                =   0x0002  ; TX disable

        PCNET_MODE_LOOP               =   0x0004  ; loopback enable

        PCNET_MODE_TXCRCD             =   0x0008

        PCNET_MODE_FORCECOLL          =   0x0010

        PCNET_MODE_RETRYD             =   0x0020

        PCNET_MODE_INTLOOP            =   0x0040

        PCNET_MODE_PORTSEL            =   0x0180

        PCNET_MODE_RXVPAD             =   0x2000

        PCNET_MODE_RXNOBROAD          =   0x4000

        PCNET_MODE_PROMISC            =   0x8000

; BCR (Bus Control Registers)

        PCNET_BCR_MMRA                =   0x00    ; Master Mode Read Active

        PCNET_BCR_MMW                 =   0x01    ; Master Mode Write Active

        PCNET_BCR_MISCCFG             =   0x02

        PCNET_BCR_LED0                =   0x04

        PCNET_BCR_LED1                =   0x05

        PCNET_BCR_LED2                =   0x06

        PCNET_BCR_LED3                =   0x07

        PCNET_BCR_DUPLEX              =   0x09

        PCNET_BCR_BUSCTL              =   0x12

        PCNET_BCR_EECTL               =   0x13

        PCNET_BCR_SSTYLE              =   0x14

        PCNET_BCR_PCILAT              =   0x16

        PCNET_BCR_PCISUBVENID         =   0x17

        PCNET_BCR_PCISUBSYSID         =   0x18

        PCNET_BCR_SRAMSIZE            =   0x19

        PCNET_BCR_SRAMBOUND           =   0x1A

        PCNET_BCR_SRAMCTL             =   0x1B

        PCNET_BCR_MIICTL              =   0x20

        PCNET_BCR_MIIADDR             =   0x21

        PCNET_BCR_MIIDATA             =   0x22

        PCNET_BCR_PCIVENID            =   0x23

        PCNET_BCR_PCIPCAP             =   0x24

        PCNET_BCR_DATA0               =   0x25

        PCNET_BCR_DATA1               =   0x26

        PCNET_BCR_DATA2               =   0x27

        PCNET_BCR_DATA3               =   0x28

        PCNET_BCR_DATA4               =   0x29

        PCNET_BCR_DATA5               =   0x2A

        PCNET_BCR_DATA6               =   0x2B

        PCNET_BCR_DATA7               =   0x2C

        PCNET_BCR_ONNOWPAT0           =   0x2D

        PCNET_BCR_ONNOWPAT1           =   0x2E

        PCNET_BCR_ONNOWPAT2           =   0x2F

        PCNET_BCR_PHYSEL              =   0x31

; RX status register

        PCNET_RXSTAT_BPE              =   0x0080  ; bus parity error

        PCNET_RXSTAT_ENP              =   0x0100  ; end of packet

        PCNET_RXSTAT_STP              =   0x0200  ; start of packet

        PCNET_RXSTAT_BUFF             =   0x0400  ; buffer error

        PCNET_RXSTAT_CRC              =   0x0800  ; CRC error

        PCNET_RXSTAT_OFLOW            =   0x1000  ; rx overrun

        PCNET_RXSTAT_FRAM             =   0x2000  ; framing error

        PCNET_RXSTAT_ERR              =   0x4000  ; error summary

        PCNET_RXSTAT_OWN              =   0x8000

; TX status register

        PCNET_TXSTAT_TRC              =   0x0000000F      ; transmit retries

        PCNET_TXSTAT_RTRY             =   0x04000000      ; retry

        PCNET_TXSTAT_LCAR             =   0x08000000      ; lost carrier

        PCNET_TXSTAT_LCOL             =   0x10000000      ; late collision

        PCNET_TXSTAT_EXDEF            =   0x20000000      ; excessive deferrals

        PCNET_TXSTAT_UFLOW            =   0x40000000      ; transmit underrun

        PCNET_TXSTAT_BUFF             =   0x80000000      ; buffer error

        PCNET_TXCTL_OWN               =   0x80000000

        PCNET_TXCTL_ERR               =   0x40000000      ; error summary

        PCNET_TXCTL_ADD_FCS           =   0x20000000      ; add FCS to pkt

        PCNET_TXCTL_MORE_LTINT        =   0x10000000

        PCNET_TXCTL_ONE               =   0x08000000

        PCNET_TXCTL_DEF               =   0x04000000

        PCNET_TXCTL_STP               =   0x02000000

        PCNET_TXCTL_ENP               =   0x01000000

        PCNET_TXCTL_BPE               =   0x00800000

        PCNET_TXCTL_MBO               =   0x0000F000

        PCNET_TXCTL_BUFSZ             =   0x00000FFF

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 PCnet 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

        jl      .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

        jl      .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     ax , word [device.pci_bus]              ; compare with pci and device num in device list (notice the usage of word instead of byte)

        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

        jge     .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.get_MAC], read_mac

        mov     [device.set_MAC], write_mac

        mov     [device.unload], unload

        mov     [device.name], my_service

; save the pci bus and device numbers

        mov     eax, [IOCTL.input]

        mov     cl , [eax+1]

        mov     [device.pci_bus], cl

        mov     cl , [eax+2]

        mov     [device.pci_dev], cl

; Now, it's time to find the base io addres of the PCI device

        find_io [device.pci_bus], [device.pci_dev], [device.io_addr]

; We've found the io address, find IRQ now

        find_irq [device.pci_bus], [device.pci_dev], [device.irq_line]

        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

        allocate_and_clear [device.tx_buffer], PCNET_RX_RING_SIZE * (PCNET_PKT_BUF_SZ + buf_head.size), .err

        allocate_and_clear [device.rx_buffer], PCNET_TX_RING_SIZE * (PCNET_PKT_BUF_SZ + buf_head.size), .err

; 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  1,"Error, removing all data !\n"

        stdcall KernelFree, [device.rx_buffer]

        stdcall KernelFree, [device.tx_buffer]

        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, PCNET_WIO_RAP

        out     dx , ax

        nop

        nop

        in      ax , dx

        sub     edx, PCNET_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, PCNET_DWIO_RAP

        mov     eax, 88

        out     dx , eax

        nop

        nop

        in      eax, dx

        sub     edx, PCNET_DWIO_RAP

        and     eax, 0xffff

        cmp     eax, 88

        jne     .no_dev

        call    switch_to_dwio

        jmp     .L1

  .no_dev:

        DEBUGF 1,"PCnet device not found!\n"

        mov     eax, 1

        ret

  .L1:

        mov     ecx, PCNET_CSR_CHIPID0

        call    [device.access_read_csr]

        mov     esi, eax

        mov     ecx, PCNET_CSR_CHIPID1

        call    [device.access_read_csr]

        shl     eax, 16

        or      eax, esi

        mov     ecx, eax

        and     ecx, 0xfff

        cmp     ecx, 3

        jne     .no_dev

        shr     eax, 12

        and     eax, 0xffff

        mov     [device.chip_version], eax

        DEBUGF 1,"chip version ok\n"

        mov     [device.fdx], 0

        mov     [device.mii], 0

        mov     [device.fset], 0

        mov     [device.dxsuflo], 0

        mov     [device.ltint], 0

        cmp     eax, 0x2420

        je      .L2

        cmp     eax, 0x2430

        je      .L2

        mov     [device.fdx], 1

        cmp     eax, 0x2621

        je      .L4

        cmp     eax, 0x2623

        je      .L5

        cmp     eax, 0x2624

        je      .L6

        cmp     eax, 0x2625

        je      .L7

        cmp     eax, 0x2626

        je      .L8

        cmp     eax, 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, PCNET_CSR_RXPOLL

        call    dword [device.access_read_bcr]

        call    dword [device.access_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, PCNET_BCR_BUSCTL

        call    [device.access_read_bcr]

        or      eax, 0x800

        call    [device.access_write_bcr]

        mov     ecx, PCNET_CSR_DMACTL

        call    [device.access_read_csr]

;        and     eax, 0xc00

;        or      eax, 0xc00

        mov     eax, 0xc00

        call    [device.access_write_csr]

        mov     [device.dxsuflo],1

        mov     [device.ltint],1

  .L11:

        make_bus_master [device.pci_bus], [device.pci_dev]

        mov     eax, PCNET_PORT_ASEL

        mov     [device.options], eax

        mov     [device.mode_], word 0x0003

        mov     [device.tlen_rlen], word (PCNET_TX_RING_LEN_BITS or PCNET_RX_RING_LEN_BITS)

        mov     dword [device.filter], 0

        mov     dword [device.filter+4], 0

        mov     eax, PCNET_IMR

        mov     ecx, PCNET_CSR_IMR                      ; Write interrupt mask

        call    [device.access_write_csr]

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  1,"\nCould not attach int handler!\n"

;        or      eax, -1

;        ret

  @@:

        mov     edx, [device.io_addr]

        call    [device.access_reset]

        ; Switch pcnet32 to 32bit mode

        mov     ecx, PCNET_BCR_SSTYLE

        mov     eax, 2

        call    [device.access_write_bcr]

        ; set/reset autoselect bit

        mov     ecx, PCNET_BCR_MISCCFG

        call    [device.access_read_bcr]

        and     eax,not 2

        test    [device.options], PCNET_PORT_ASEL

        jz      .L1

        or      eax, 2

  .L1:

        call    [device.access_write_bcr]

        ; Handle full duplex setting

        cmp     byte [device.full_duplex], 0

        je      .L2

        mov     ecx, PCNET_BCR_DUPLEX

        call    [device.access_read_bcr]

        and     eax, not 3

        test    [device.options], PCNET_PORT_FD

        jz      .L3

        or      eax, 1

        cmp     [device.options], PCNET_PORT_FD or PCNET_PORT_AUI

        jne     .L4

        or      eax, 2

        jmp     .L4

  .L3:

        test    [device.options], PCNET_PORT_ASEL

        jz      .L4

        cmp     [device.chip_version], 0x2627

        jne     .L4

        or      eax, 3

  .L4:

        mov     ecx, PCNET_BCR_DUPLEX

        call    [device.access_write_bcr]

  .L2:

        ; set/reset GPSI bit in test register

        mov     ecx, 124

        call    [device.access_read_csr]

        mov     ecx, [device.options]

        and     ecx, PCNET_PORT_PORTSEL

        cmp     ecx, PCNET_PORT_GPSI

        jne     .L5

        or      eax, 0x10

  .L5:

        call    [device.access_write_csr]

        cmp     [device.mii], 0

        je      .L6

        test    [device.options], PCNET_PORT_ASEL

        jnz     .L6

        mov     ecx, PCNET_BCR_MIICTL

        call    [device.access_read_bcr]

        and     eax,not 0x38

        test    [device.options], PCNET_PORT_FD

        jz      .L7

        or      eax, 0x10

  .L7:

        test    [device.options], PCNET_PORT_100

        jz      .L8

        or      eax, 0x08

  .L8:

        call    [device.access_write_bcr]

        jmp     .L9

.L6:

        test    [device.options], PCNET_PORT_ASEL

        jz      .L9

        mov     ecx, PCNET_BCR_MIICTL

        DEBUGF 1,"ASEL, enable auto-negotiation\n"

        call    [device.access_read_bcr]

        and     eax, not 0x98

        or      eax, 0x20

        call    [device.access_write_bcr]

.L9:

        cmp     [device.ltint],0

        je      .L10

        mov     ecx,5

        call    [device.access_read_csr]

        or      eax,(1 shl 14)

        call    [device.access_write_csr]

.L10:

        mov     eax,[device.options]

        and     eax,PCNET_PORT_PORTSEL

        shl     eax,7

        mov     [device.mode_],ax

        mov     dword [device.filter], -1

        mov     dword [device.filter+4], -1

        call    read_mac

        lea     esi, [device.mac]

        lea     edi, [device.phys_addr]

        movsd

        movsw

        call    init_ring

        lea     eax, [device.private]

        GetRealAddr

        push    eax

        and     eax, 0xffff

        mov     ecx, 1

        call    [device.access_write_csr]

        pop     eax

        shr     eax,16

        mov     ecx,2

        call    [device.access_write_csr]

        mov     ecx,4

        mov     eax,0x0915

        call    [device.access_write_csr]

        mov     ecx,0

        mov     eax,1

        call    [device.access_write_csr]

        mov     [device.tx_full],0

        mov     [device.cur_rx],0

        mov     [device.cur_tx],0

        mov     [device.dirty_rx],0

        mov     [device.dirty_tx],0

        mov     ecx,100

.L11:

        push    ecx

        xor     ecx,ecx

        call    [device.access_read_csr]

        pop     ecx

        test    ax,0x100

        jnz     .L12

        loop    .L11

.L12:

        DEBUGF 1,"hardware reset\n"

        xor     ecx, ecx

        mov     eax, 0x0002

        call    [device.access_write_csr]

        xor     ecx, ecx

        call    [device.access_read_csr]

        xor     ecx, ecx

        mov     eax, PCNET_CSR_INTEN or PCNET_CSR_START

        call    [device.access_write_csr]

; Set the mtu, kernel will be able to send now

        mov     [device.mtu], 1514

        DEBUGF 1,"PCNET reset complete\n"

        xor     eax, eax

        ret

align 4

init_ring:

        mov     ecx, PCNET_RX_RING_SIZE

        mov     edi, [device.rx_buffer]

        mov     eax, edi

        GetRealAddr

        mov     [device.rx_ring_phys], eax

        add     eax, PCNET_RX_RING_SIZE * buf_head.size

  .rx_init:

        mov     [edi + buf_head.base], eax

        mov     [edi + buf_head.length], PCNET_PKT_BUF_SZ_NEG

        mov     [edi + buf_head.status], 0x8000

        and     dword [edi + buf_head.msg_length], 0

        and     dword [edi + buf_head.reserved], 0

        add     eax, PCNET_PKT_BUF_SZ

        add     edi, buf_head.size

        loop    .rx_init

        mov     ecx, PCNET_TX_RING_SIZE

        mov     edi, [device.tx_buffer]

        mov     eax, edi

        GetRealAddr

        mov     [device.tx_ring_phys], eax

        add     eax, PCNET_TX_RING_SIZE * buf_head.size

  .tx_init:

        mov     [edi + buf_head.base], eax

        and     dword [edi + buf_head.length], 0

        and     dword [edi + buf_head.msg_length], 0

        and     dword [edi + buf_head.reserved], 0

        add     eax, PCNET_PKT_BUF_SZ

        add     edi, buf_head.size

        loop    .tx_init

        mov     [device.tlen_rlen], (PCNET_TX_RING_LEN_BITS or PCNET_RX_RING_LEN_BITS)

        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

        jg      .nospace                        ; packet is too long

        cmp     dword [esp+8], 60

        jl      .nospace                        ; packet is too short

; check descriptor

        movzx   eax, [device.cur_tx]

        imul    edi, eax, PCNET_PKT_BUF_SZ

        shl     eax, 4

        add     eax, [device.tx_buffer]

        add     edi, [device.tx_buffer]

        add     edi, PCNET_TX_RING_SIZE * buf_head.size

        test    byte [eax + buf_head.status + 1], 80h

        jnz     .nospace

; descriptor is free, copy data

        mov     esi, [esp+4]

        mov     ecx, [esp+8]

        mov     edx, ecx

        shr     ecx, 2

        and     edx, 3

        rep     movsd

        mov     ecx, edx

        rep     movsb

; set length

        mov     ecx, [esp+8]

        neg     ecx

        mov     [eax + buf_head.length], cx

; put to transfer queue

        mov     [eax + buf_head.status], 0x8300

; trigger an immediate send

        xor     ecx, ecx         ; CSR0

        call    [device.access_read_csr]

        or      eax, PCNET_CSR_TX

        call    [device.access_write_csr]

; get next descriptor 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, ...

        inc     [device.cur_tx]

        and     [device.cur_tx], 3

        DEBUGF  2," - Packet Sent! "

; 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  2," - Done!\n"

        stdcall KernelFree, [esp+4]

        xor     eax, eax

        ret     8

.nospace:

        DEBUGF  1, 'ERROR: no free transmit descriptors\n'

        stdcall KernelFree, [esp+4]

        or      eax, -1

        ret     8

;;;;;;;;;;;;;;;;;;;;;;;

;;                   ;;

;; Interrupt handler ;;

;;                   ;;

;;;;;;;;;;;;;;;;;;;;;;;

align 4

int_handler:

        DEBUGF  1,"\n%s int\n", my_service

; 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]     ; get IRQ reason

        push    ecx

        xor     ecx, ecx ; CSR0

        call    [device.access_read_csr]

        pop     ecx

        test    al, al

        js      .got_it

  .continue:

        add     esi, 4

        dec     ecx

        jnz     .nextdevice

  .nothing:

        ret                                         ; If no device was found, abort (The irq was probably for a device, not registered to this driver

  .got_it:

        DEBUGF  1,"Device: %x Status: %x ", ebx, eax:2

;-------------------------------------------------------

; Possible reasons:

; initialization done - ignore

; transmit done - ignore

; packet received - handle

; Clear ALL IRQ reasons.

; N.B. One who wants to handle more than one reason must be ready

; to two or more reasons in one IRQ.

        xor     ecx, ecx

        call    [device.access_write_csr]

; Received packet ok?

        test    ax, PCNET_CSR_RINT

        jz      @f

        push    ebx

.receiver_test_loop:

        pop     ebx

        movzx   eax, [device.cur_rx]