;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2010. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; DEC 21x4x driver for KolibriOS ;;
;; ;;
;; Based on dec21140.Asm from Solar OS by ;;
;; Eugen Brasoveanu, ;;
;; Ontanu Bogdan Valentin ;;
;; ;;
;; Written by hidnplayr@kolibrios.org ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
format MS COFF
API_VERSION equ 0x01000100
DRIVER_VERSION equ 5
MAX_DEVICES equ 16
DEBUG equ 1
__DEBUG__ equ 1
__DEBUG_LEVEL__ equ 1
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
.rx_p_des dd ? ; descriptors ring with received packets
.tx_p_des dd ? ; descriptors ring with 'to transmit' packets
.tx_free_des dd ? ; Tx descriptors available
.tx_wr_des dd ? ; Tx current descriptor to write data to
.tx_rd_des dd ? ; Tx current descriptor to read TX completion
.rx_crt_des dd ? ; Rx current descriptor
.io_addr dd ?
.pci_bus db ?
.pci_dev db ?
.irq_line db ?
.size = $ - device
end virtual
;-------------------------------------------
; configuration registers
;-------------------------------------------
CFCS equ 4 ; configuration and status register
CSR0 equ 0x00 ; Bus mode
CSR1 equ 0x08 ; Transmit Poll Command
CSR2 equ 0x10 ; Receive Poll Command
CSR3 equ 0x18 ; Receive list base address
CSR4 equ 0x20 ; Transmit list base address
CSR5 equ 0x28 ; Status
CSR6 equ 0x30 ; Operation mode
CSR7 equ 0x38 ; Interrupt enable
CSR8 equ 0x40 ; Missed frames and overflow counter
CSR9 equ 0x48 ; Boot ROM, serial ROM, and MII management
CSR10 equ 0x50 ; Boot ROM programming address
CSR11 equ 0x58 ; General-purpose timer
CSR12 equ 0x60 ; General-purpose port
CSR13 equ 0x68
CSR14 equ 0x70
CSR15 equ 0x78 ; Watchdog timer
;--------bits/commands of CSR0-------------------
CSR0_RESET equ 1b
CSR0_WIE equ 1 SHL 24 ; Write and Invalidate Enable
CSR0_RLE equ 1 SHL 23 ; PCI Read Line Enable
CSR0_RML equ 1 SHL 21 ; PCI Read Multiple
CSR0_CACHEALIGN_NONE equ 00b SHL 14
CSR0_CACHEALIGN_32 equ 01b SHL 14
CSR0_CACHEALIGN_64 equ 10b SHL 14
CSR0_CACHEALIGN_128 equ 11b SHL 14
; using values from linux driver.. :P
CSR0_DEFAULT equ CSR0_WIE+CSR0_RLE+CSR0_RML+CSR0_CACHEALIGN_NONE ;32
;------- CSR5 -STATUS- bits --------------------------------
CSR5_TI equ 1 SHL 0 ; Transmit interupt - frame transmition completed
CSR5_TPS equ 1 SHL 1 ; Transmit process stopped
CSR5_TU equ 1 SHL 2 ; Transmit Buffer unavailable
CSR5_TJT equ 1 SHL 3 ; Transmit Jabber Timeout (transmitter had been excessively active)
CSR5_UNF equ 1 SHL 5 ; Transmit underflow - FIFO underflow
CSR5_RI equ 1 SHL 6 ; Receive Interrupt
CSR5_RU equ 1 SHL 7 ; Receive Buffer unavailable
CSR5_RPS equ 1 SHL 8 ; Receive Process stopped
CSR5_RWT equ 1 SHL 9 ; Receive Watchdow Timeout
CSR5_ETI equ 1 SHL 10 ; Early transmit Interrupt
CSR5_GTE equ 1 SHL 11 ; General Purpose Timer Expired
CSR5_FBE equ 1 SHL 13 ; Fatal bus error
CSR5_ERI equ 1 SHL 14 ; Early receive Interrupt
CSR5_AIS equ 1 SHL 15 ; Abnormal interrupt summary
CSR5_NIS equ 1 SHL 16 ; normal interrupt summary
CSR5_RS_SH equ 1 SHL 17 ; Receive process state -shift
CSR5_RS_MASK equ 111b ; -mask
CSR5_TS_SH equ 1 SHL 20 ; Transmit process state -shift
CSR5_TS_MASK equ 111b ; -mask
CSR5_EB_SH equ 1 SHL 23 ; Error bits -shift
CSR5_EB_MASK equ 111b ; Error bits -mask
;CSR5 TS values
CSR5_TS_STOPPED equ 000b
CSR5_TS_RUNNING_FETCHING_DESC equ 001b
CSR5_TS_RUNNING_WAITING_TX equ 010b
CSR5_TS_RUNNING_READING_BUFF equ 011b
CSR5_TS_RUNNING_SETUP_PCKT equ 101b
CSR5_TS_SUSPENDED equ 110b
CSR5_TS_RUNNING_CLOSING_DESC equ 111b
;------- CSR6 -OPERATION MODE- bits --------------------------------
CSR6_HP equ 1 SHL 0 ; Hash/Perfect Receive Filtering mode
CSR6_SR equ 1 SHL 1 ; Start/Stop receive
CSR6_HO equ 1 SHL 2 ; Hash only Filtering mode
CSR6_PB equ 1 SHL 3 ; Pass bad frames
CSR6_IF equ 1 SHL 4 ; Inverse filtering
CSR6_SB equ 1 SHL 5 ; Start/Stop backoff counter
CSR6_PR equ 1 SHL 6 ; Promiscuos mode -default after reset
CSR6_PM equ 1 SHL 7 ; Pass all multicast
CSR6_F equ 1 SHL 9 ; Full Duplex mode
CSR6_OM_SH equ 1 SHL 10 ; Operating Mode -shift
CSR6_OM_MASK equ 11b ; -mask
CSR6_FC equ 1 SHL 12 ; Force Collision Mode
CSR6_ST equ 1 SHL 13 ; Start/Stop Transmission Command
CSR6_TR_SH equ 1 SHL 14 ; Threshold Control -shift
CSR6_TR_MASK equ 11b ; -mask
CSR6_CA equ 1 SHL 17 ; Capture Effect Enable
CSR6_PS equ 1 SHL 18 ; Port select SRL / MII/SYM
CSR6_HBD equ 1 SHL 19 ; Heartbeat Disable
CSR6_SF equ 1 SHL 21 ; Store and Forward -transmit full packet only
CSR6_TTM equ 1 SHL 22 ; Transmit Threshold Mode -
CSR6_PCS equ 1 SHL 23 ; PCS active and MII/SYM port operates in symbol mode
CSR6_SCR equ 1 SHL 24 ; Scrambler Mode
CSR6_MBO equ 1 SHL 25 ; Must Be One
CSR6_RA equ 1 SHL 30 ; Receive All
CSR6_SC equ 1 SHL 31 ; Special Capture Effect Enable
;------- CSR7 -INTERRUPT ENABLE- bits --------------------------------
CSR7_TI equ 1 SHL 0 ; transmit Interrupt Enable (set with CSR7<16> & CSR5<0> )
CSR7_TS equ 1 SHL 1 ; transmit Stopped Enable (set with CSR7<15> & CSR5<1> )
CSR7_TU equ 1 SHL 2 ; transmit buffer underrun Enable (set with CSR7<16> & CSR5<2> )
CSR7_TJ equ 1 SHL 3 ; transmit jabber timeout enable (set with CSR7<15> & CSR5<3> )
CSR7_UN equ 1 SHL 5 ; underflow Interrupt enable (set with CSR7<15> & CSR5<5> )
CSR7_RI equ 1 SHL 6 ; receive Interrupt enable (set with CSR7<16> & CSR5<5> )
CSR7_RU equ 1 SHL 7 ; receive buffer unavailable enable (set with CSR7<15> & CSR5<7> )
CSR7_RS equ 1 SHL 8 ; Receive stopped enable (set with CSR7<15> & CSR5<8> )
CSR7_RW equ 1 SHL 9 ; receive watchdog timeout enable (set with CSR7<15> & CSR5<9> )
CSR7_ETE equ 1 SHL 10 ; Early transmit Interrupt enable (set with CSR7<15> & CSR5<10> )
CSR7_GPT equ 1 SHL 11 ; general purpose timer enable (set with CSR7<15> & CSR5<11> )
CSR7_FBE equ 1 SHL 13 ; Fatal bus error enable (set with CSR7<15> & CSR5<13> )
CSR7_ERE equ 1 SHL 14 ; Early receive enable (set with CSR7<16> & CSR5<14> )
CSR7_AI equ 1 SHL 15 ; Abnormal Interrupt Summary Enable (enables CSR5<0,3,7,8,9,10,13>)
CSR7_NI equ 1 SHL 16 ; Normal Interrup Enable (enables CSR5<0,2,6,11,14>)
CSR7_DEFAULT equ CSR7_TI+CSR7_TS+CSR7_RI+CSR7_RS+CSR7_TU+CSR7_TJ+CSR7_UN+\
CSR7_RU+CSR7_RW+CSR7_FBE+CSR7_AI+CSR7_NI
;----------- descriptor structure ---------------------
struc DES {
.DES0 DD ? ; bit 31 is 'own' and rest is 'status'
.DES1 DD ? ; control bits + bytes-count buffer 1 + bytes-count buffer 2
.DES2 DD ? ; pointer to buffer1
.DES3 DD ? ; pointer to buffer2 or in this case to next descriptor, as we use a chained structure
.realaddr dd ?
.size = 64
}
virtual at 0
DES DES
end virtual
;common to Rx and Tx
DES0_OWN equ 1 SHL 31 ; if set, the NIC controls the descriptor, otherwise driver 'owns' the descriptors
;receive
RDES0_ZER equ 1 SHL 0 ; must be 0 if legal length :D
RDES0_CE equ 1 SHL 1 ; CRC error, valid only on last desc (RDES0<8>=1)
RDES0_DB equ 1 SHL 2 ; dribbling bit - not multiple of 8 bits, valid only on last desc (RDES0<8>=1)
RDES0_RE equ 1 SHL 3 ; Report on MII error.. i dont realy know what this means :P
RDES0_RW equ 1 SHL 4 ; received watchdog timer expiration - must set CSR5<9>, valid only on last desc (RDES0<8>=1)
RDES0_FT equ 1 SHL 5 ; frame type: 0->IEEE802.0 (len<1500) 1-> ETHERNET frame (len>1500), valid only on last desc (RDES0<8>=1)
RDES0_CS equ 1 SHL 6 ; Collision seen, valid only on last desc (RDES0<8>=1)
RDES0_TL equ 1 SHL 7 ; Too long(>1518)-NOT AN ERROR, valid only on last desc (RDES0<8>=1)
RDES0_LS equ 1 SHL 8 ; Last descriptor of current frame
RDES0_FS equ 1 SHL 9 ; First descriptor of current frame
RDES0_MF equ 1 SHL 10 ; Multicast frame, valid only on last desc (RDES0<8>=1)
RDES0_RF equ 1 SHL 11 ; Runt frame, valid only on last desc (RDES0<8>=1) and id overflow
RDES0_DT_SERIAL equ 00b SHL 12 ; Data type-Serial recv frame, valid only on last desc (RDES0<8>=1)
RDES0_DT_INTERNAL equ 01b SHL 12 ; Data type-Internal loopback recv frame, valid only on last desc (RDES0<8>=1)
RDES0_DT_EXTERNAL equ 11b SHL 12 ; Data type-External loopback recv frame, valid only on last desc (RDES0<8>=1)
RDES0_DE equ 1 SHL 14 ; Descriptor error - cant own a new desc and frame doesnt fit, valid only on last desc (RDES0<8>=1)
RDES0_ES equ 1 SHL 15 ; Error Summmary - bits 1+6+11+14, valid only on last desc (RDES0<8>=1)
RDES0_FL_SH equ 16 ; Field length shift, valid only on last desc (RDES0<8>=1)
RDES0_FL_MASK equ 11111111111111b ; Field length mask (+CRC), valid only on last desc (RDES0<8>=1)
RDES0_FF equ 1 SHL 30 ; Filtering fail-frame failed address recognition test(must CSR6<30>=1), valid only on last desc (RDES0<8>=1)
RDES1_RBS1_MASK equ 11111111111b ; firsd buffer size MASK
RDES1_RBS2_SH equ 1 SHL 11 ; second buffer size SHIFT
RDES1_RBS2_MASK equ 11111111111b ; second buffer size MASK
RDES1_RCH equ 1 SHL 24 ; Second address chained - second address (buffer) is next desc address
RDES1_RER equ 1 SHL 25 ; Receive End of Ring - final descriptor, NIC must return to first desc
;transmition
TDES0_DE equ 1 SHL 0 ; Deffered
TDES0_UF equ 1 SHL 1 ; Underflow error
TDES0_LF equ 1 SHL 2 ; Link fail report (only if CSR6<23>=1)
TDES0_CC_SH equ 3 ; Collision Count shift - no of collision before transmition
TDES0_CC_MASK equ 1111b ; Collision Count mask
TDES0_HF equ 1 SHL 7 ; Heartbeat fail
TDES0_EC equ 1 SHL 8 ; Excessive Collisions - >16 collisions
TDES0_LC equ 1 SHL 9 ; Late collision
TDES0_NC equ 1 SHL 10 ; No carrier
TDES0_LO equ 1 SHL 11 ; Loss of carrier
TDES0_TO equ 1 SHL 14 ; Transmit Jabber Timeout
TDES0_ES equ 1 SHL 15 ; Error summary TDES0<1+8+9+10+11+14>=1
TDES1_TBS1_MASK equ 11111111111b ; Buffer 1 size mask
TDES1_TBS2_SH equ 11 ; Buffer 2 size shift
TDES1_TBS2_MASK equ 11111111111b ; Buffer 2 size mask
TDES1_FT0 equ 1 SHL 22 ; Filtering type 0
TDES1_DPD equ 1 SHL 23 ; Disabled padding for packets <64bytes, no padding
TDES1_TCH equ 1 SHL 24 ; Second address chained - second buffer pointer is to next desc
TDES1_TER equ 1 SHL 25 ; Transmit end of ring - final descriptor
TDES1_AC equ 1 SHL 26 ; Add CRC disable -pretty obvious
TDES1_SET equ 1 SHL 27 ; Setup packet
TDES1_FT1 equ 1 SHL 28 ; Filtering type 1
TDES1_FS equ 1 SHL 29 ; First segment - buffer is first segment of frame
TDES1_LS equ 1 SHL 30 ; Last segment
TDES1_IC equ 1 SHL 31 ; Interupt on completion (CSR5<0>=1) valid when TDES1<30>=1
MAX_ETH_FRAME_SIZE equ 1514
RX_DES_COUNT equ 4 ; no of RX descriptors, must be power of 2
RX_BUFF_SIZE equ 2048 ; size of buffer for each descriptor, must be multiple of 4 and <= 2048 TDES1_TBS1_MASK
TX_DES_COUNT equ 4 ; no of TX descriptors, must be power of 2
TX_BUFF_SIZE equ 2048 ; size of buffer for each descriptor, used for memory allocation only
RX_MEM_TOTAL_SIZE equ RX_DES_COUNT*(DES.size+RX_BUFF_SIZE)
TX_MEM_TOTAL_SIZE equ TX_DES_COUNT*(DES.size+TX_BUFF_SIZE)
;=============================================================================
; serial ROM operations
;=============================================================================
CSR9_SR equ 1 SHL 11 ; SROM Select
CSR9_RD equ 1 SHL 14 ; ROM Read Operation
CSR9_SROM_DO equ 1 SHL 3 ; Data Out for SROM
CSR9_SROM_DI equ 1 SHL 2 ; Data In to SROM
CSR9_SROM_CK equ 1 SHL 1 ; clock for SROM
CSR9_SROM_CS equ 1 SHL 0 ; chip select.. always needed
; assume dx is CSR9
macro SROM_Delay {
push eax
in eax, dx
in eax, dx
in eax, dx
in eax, dx
in eax, dx
in eax, dx
in eax, dx
in eax, dx
in eax, dx
in eax, dx
pop eax
}
; assume dx is CSR9
macro MDIO_Delay {
push eax
in eax, dx
pop eax
}
macro Bit_Set a_bit {
in eax, dx
or eax, a_bit
out dx , eax
}
macro Bit_Clear a_bit {
in eax, dx
and eax, NOT (a_bit)
out dx , eax
}
section '.flat' code readable align 16
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; proc START ;;
;; ;;
;; (standard driver proc) ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
proc START stdcall, state:dword
cmp [state], 1
jne .exit
.entry:
DEBUGF 2,"Loading dec21x4x 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 esi, device_list
mov ecx, [devices]
test ecx, ecx
jz .firstdevice
; 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
push edx
stdcall KernelAlloc, dword device.size ; Allocate the buffer for eth_device structure
pop edx
test eax, eax
jz .fail
mov ebx, eax ; ebx is always used as a pointer to the structure (in driver, but also in kernel code)
; 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 2,"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]:8
allocate_and_clear [device.rx_p_des], RX_DES_COUNT*(DES.size+RX_BUFF_SIZE), .err
allocate_and_clear [device.tx_p_des], TX_DES_COUNT*(DES.size+TX_BUFF_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 .err2 ; 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 2,"Trying to find device number of already registered device\n"
mov ebx, eax
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 2,"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
.err2:
dec [devices]
.err:
DEBUGF 2,"removing device structure\n"
stdcall KernelFree, [device.rx_p_des]
stdcall KernelFree, [device.tx_p_des]
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
macro status {
set_io CSR5
in eax, dx
DEBUGF 1,"CSR5: %x\n", eax
}
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Probe ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
probe:
DEBUGF 2,"Probing dec21x4x device: "
make_bus_master [device.pci_bus], [device.pci_dev]
movzx eax, [device.pci_bus]
movzx ecx, [device.pci_dev]
stdcall PciRead32, eax ,ecx ,0 ; get device/vendor id
DEBUGF 1,"Vendor id: 0x%x\n", ax
cmp ax , 0x1011
jne .notfound
shr eax, 16
DEBUGF 1,"Vendor ok!, device id: 0x%x\n", ax ; TODO: use another method to detect chip!
cmp ax , 0x0009
je .supported_device
cmp ax , 0x0019
je .supported_device2
.notfound:
DEBUGF 1,"Device not supported!\n"
or eax, -1
ret
.supported_device2:
; wake up the 21143
movzx ecx, [device.pci_bus]
movzx edx, [device.pci_dev]
xor eax, eax
stdcall PciWrite32, ecx, edx, 0x40, eax
.supported_device:
call SROM_GetWidth ; TODO: use this value returned in ecx
; in the read_word routine!
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Reset ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
reset:
DEBUGF 2,"Resetting dec21x4x\n"
;-----------------------------------------------------------
; board software reset - if fails, dont do nothing else
set_io 0
status
set_io CSR0
mov eax, CSR0_RESET
out dx , eax
; wait at least 50 PCI cycles
mov esi, 1000
call Sleep
;-----------
; setup CSR0
set_io 0
status
set_io CSR0
mov eax, CSR0_DEFAULT
out dx , eax
; wait at least 50 PCI cycles
mov esi, 1000
call Sleep
;-----------------------------------
; Read mac from eeprom to driver ram
call read_mac_eeprom
;--------------------------------
; insert irq handler on given irq
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
@@:
set_io 0
status
;------------------------------------------
; Setup RX descriptors (use chained method)
mov eax, [device.rx_p_des]
call GetPgAddr
mov edx, eax
lea esi, [eax + RX_DES_COUNT*(DES.size)] ; jump over RX descriptors
mov eax, [device.rx_p_des]
add eax, RX_DES_COUNT*(DES.size) ; jump over RX descriptors
mov edi, [device.rx_p_des]
mov ecx, RX_DES_COUNT
push edx ;;
.loop_rx_des:
add edx, DES.size
mov [edi+DES.DES0], DES0_OWN ; hardware owns buffer
mov [edi+DES.DES1], 1984+RDES1_RCH ; only size of first buffer, chained buffers
mov [edi+DES.DES2], esi ; hw buffer address
mov [edi+DES.DES3], edx ; pointer to next descriptor
mov [edi+DES.realaddr], eax ; virtual buffer address
DEBUGF 1,"RX desc %u, buff addr: %x, next desc: %x, real buff addr: %x, real descr addr: %x \n", ecx, esi, edx, eax, edi
add esi, RX_BUFF_SIZE
add eax, RX_BUFF_SIZE
add edi, DES.size
dec ecx
jnz .loop_rx_des
; set last descriptor as LAST
sub edi, DES.size
or [edi+DES.DES1], RDES1_RER ; EndOfRing
pop edx ;;
mov [edi+DES.DES3], edx ;;
;---------------------
; Setup TX descriptors
mov eax, [device.tx_p_des]
call GetPgAddr
mov edx, eax
lea esi, [eax + TX_DES_COUNT*(DES.size)] ; jump over TX descriptors
mov eax, [device.tx_p_des]
add eax, TX_DES_COUNT*(DES.size) ; jump over TX descriptors
mov edi, [device.tx_p_des]
mov ecx, TX_DES_COUNT
push edx ;;
.loop_tx_des:
add edx, DES.size
mov [edi+DES.DES0], 0 ; owned by driver
mov [edi+DES.DES1], TDES1_TCH ; chained method
mov [edi+DES.DES2], esi ; pointer to buffer
mov [edi+DES.DES3], edx ; pointer to next descr
mov [edi+DES.realaddr], eax
DEBUGF 1,"TX desc %u, buff addr: %x, next desc: %x, real buff addr: %x, real descr addr: %x \n", ecx, esi, edx, eax, edi
add esi, TX_BUFF_SIZE
add eax, TX_BUFF_SIZE
add edi, DES.size
dec ecx
jnz .loop_tx_des
; set last descriptor as LAST
sub edi, DES.size
or [edi+DES.DES1], TDES1_TER ; EndOfRing
pop edx ;;;
mov [edi+DES.DES3], edx ;;;
;------------------
; Reset descriptors
mov [device.tx_wr_des], 0
mov [device.tx_rd_des], 0
mov [device.rx_crt_des], 0
mov [device.tx_free_des], TX_DES_COUNT
;--------------------------------------------
; setup CSR3 & CSR4 (pointers to descriptors)
set_io 0
status
set_io CSR3
mov eax, [device.rx_p_des]
call GetPgAddr
DEBUGF 1,"RX descriptor base address: %x\n", eax
out dx , eax
set_io CSR4
mov eax, [device.tx_p_des]
call GetPgAddr
DEBUGF 1,"TX descriptor base address: %x\n", eax
out dx , eax
;-------------------------------------------------------
; setup interrupt mask register -expect IRQs from now on
status
DEBUGF 1,"Enabling interrupts\n"
set_io CSR7
mov eax, CSR7_DEFAULT
out dx , eax
status
;----------
; enable RX
set_io 0
status
DEBUGF 1,"Enable RX\n"
set_io CSR6
Bit_Set CSR6_SR; or CSR6_PR or CSR6_ST
DEBUGF 1,"CSR6: %x\n", eax
status
call start_link
; wait a bit
mov esi, 3000
call Sleep
;----------------------------------------------------
; send setup packet to notify the board about the MAC
call Send_Setup_Packet
xor eax, eax
; clear packet/byte counters
lea edi, [device.bytes_tx]
mov ecx, 6
rep stosd
; Set the mtu, kernel will be able to send now
mov [device.mtu], 1514
DEBUGF 1,"Reset done\n"
ret
align 4
start_link:
; TODO: write working code here
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Send setup packet ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
Send_Setup_Packet:
DEBUGF 1,"Sending setup packet\n"
; if no descriptors available, out
mov ecx, 1000
@@loop_wait_desc:
cmp [device.tx_free_des], 0
jne @f
dec ecx
jnz @@loop_wait_desc
mov eax, -1
ret
@@:
; go to current send descriptor
mov edi, [device.tx_p_des]
mov eax, [device.tx_wr_des]
DEBUGF 1,"Got free descriptor: %u (%x)", eax, edi
mov edx, DES.size
mul edx
add edi, eax
DEBUGF 1,"=>%x\n", edi
; if NOT sending FIRST setup packet, must set current descriptor to 0 size for both buffers,
; and go to next descriptor for real setup packet... ;; TODO: check if 2 descriptors are available
; cmp [device.tx_packets], 0
; je .not_first
;
; and [edi+DES.des1], 0
; mov [edi+DES.des0], DES0_OWN
;
; go to next descriptor
; inc [device.tx_wr_des]
; and [device.tx_wr_des], TX_DES_COUNT-1
;
; dec free descriptors count
; cmp [device.tx_free_des], 0
; jz @f
; dec [device.tx_free_des]
; @@:
;
; ; recompute pointer to current descriptor
; mov edi, [device.tx_p_des]
; mov eax, [device.tx_wr_des]
; mov edx, DES.size
; mul edx
; add edi, eax
.not_first:
push edi
; copy setup packet to current descriptor
mov edi, [edi+DES.realaddr]
; copy once the address
lea esi, [device.mac]
DEBUGF 1,"copying packet to %x from %x\n", edi, esi
mov ecx, 3 ; mac is 6 bytes thus 3 words
.loop:
DEBUGF 1,"%x ", [esi]:4
movsw
dec esi
dec esi
movsw
dec ecx
jnz .loop
DEBUGF 1,"\n"
; copy 15 times the broadcast address
mov ecx, 3*15
mov eax, 0xffffffff
rep stosd
pop edi
; setup descriptor
DEBUGF 1,"setting up descriptor\n"
mov [edi+DES.DES1], TDES1_IC+TDES1_SET+TDES1_TCH+192 ; size must be EXACTLY 192 bytes
mov [edi+DES.DES0], DES0_OWN
DEBUGF 1,"TDES0: %x\n", [edi+DES.DES0]:8
DEBUGF 1,"TDES1: %x\n", [edi+DES.DES1]:8
DEBUGF 1,"TDES2: %x\n", [edi+DES.DES2]:8
DEBUGF 1,"TDES3: %x\n", [edi+DES.DES3]:8
; go to next descriptor
inc [device.tx_wr_des]
and [device.tx_wr_des], TX_DES_COUNT-1
; dec free descriptors count
cmp [device.tx_free_des], 0
jz @f
dec [device.tx_free_des]
@@:
; start tx
set_io 0
status
set_io CSR6
in eax, dx
test eax, CSR6_ST ; if NOT started, start now
jnz .already_started
or eax, CSR6_ST
DEBUGF 1,"Starting TX\n"
jmp .do_it
.already_started:
; if already started, issue a Transmit Poll command
set_io CSR1
mov eax, 0
DEBUGF 1,"Issuing transmit poll command\n"
.do_it:
out dx , eax
status
DEBUGF 1,"Sending setup packet, completed!\n"
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], MAX_ETH_FRAME_SIZE
ja .fail
cmp [device.tx_free_des], 0
je .fail
;--------------------------
; copy packet to crt buffer
mov eax, [device.tx_wr_des]
mov edx, DES.size
mul edx
add eax, [device.tx_p_des]
mov edi, [eax+DES.realaddr] ; pointer to buffer
mov esi, [esp+4]
mov ecx, [esp+8]
DEBUGF 1,"copying %u bytes from %x to %x\n", ecx, esi, edi
rep movsb
; set packet size
mov ecx, [eax+DES.DES1]
and ecx, TDES1_TER ; preserve 'End of Ring' bit
or ecx, [esp+8] ; set size
or ecx, TDES1_FS or TDES1_LS or TDES1_IC or TDES1_TCH ; first descr, last descr, interrupt on complete, chained modus
mov [eax+DES.DES1], ecx
; set descriptor info
mov [eax+DES.DES0], DES0_OWN ; say it is now owned by the 21x4x
; start tx
set_io 0
status
set_io CSR6
in eax, dx
test eax, CSR6_ST ; if NOT started, start now
jnz .already_started
or eax, CSR6_ST
DEBUGF 1,"Starting TX\n"
jmp .do_it
.already_started:
; if already started, issues a Transmit Poll command
set_io CSR1
mov eax, -1
.do_it:
out dx , eax
; Update stats
inc [device.packets_tx]
mov eax, [esp+8]
add dword [device.bytes_tx], eax
adc dword [device.bytes_tx + 4], 0
; go to next descriptor
inc [device.tx_wr_des]
and [device.tx_wr_des], TX_DES_COUNT-1
; dec free descriptors count
test [device.tx_free_des], -1
jz .end
dec [device.tx_free_des]
.end:
status
DEBUGF 1,"transmit ok\n"
xor eax, eax
stdcall KernelFree, [esp+4]
ret 8
.fail:
DEBUGF 1,"transmit failed\n"
or eax, -1
stdcall KernelFree, [esp+4]
ret 8
;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Interrupt handler ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;
align 4
int_handler:
DEBUGF 1,"IRQ %x ",eax:2 ; no, you cant replace 'eax:2' with 'al', this must be a bug in FDO
; find pointer of device wich made IRQ occur
mov ecx, [devices]
test ecx, ecx
jz .fail
mov esi, device_list
.nextdevice:
mov ebx, dword [esi]
set_io 0
set_io CSR5
in eax, dx
out dx , eax ; send it back to ACK
and eax, CSR7_DEFAULT ; int mask
test eax, eax
jnz .got_it
.continue:
add esi, 4
dec ecx
jnz .nextdevice
ret ; If no device was found, abort (The irq was probably for a device, not registered to this driver)
.got_it:
DEBUGF 1,"CSR7: %x ", eax
; looks like we've found it!
; Lets found out why the irq occured then..
;----------------------------------
; TX ok?
test eax, CSR5_TI
jz .not_tx
push ax esi ecx
DEBUGF 1,"TX ok!\n"
; go to current descriptor
mov edi, [device.tx_p_des]
mov eax, [device.tx_rd_des]
mov edx, DES.size
mul edx
add edi, eax
.loop_tx:
; done if all desc are free
cmp [device.tx_free_des], TX_DES_COUNT
jz .end_tx
mov eax, [edi+DES.DES0]
; we stop at first desc that is owned be NIC
test eax, DES0_OWN
jnz .end_tx
; detect is setup packet
cmp eax, (0ffffffffh - DES0_OWN) ; all other bits are 1
jne .not_setup_packet
DEBUGF 1,"Setup Packet detected\n"
.not_setup_packet:
DEBUGF 1,"packet status: %x\n", eax
; next descriptor
add edi, DES.size
inc [device.tx_rd_des]
and [device.tx_rd_des], TX_DES_COUNT-1
; inc free desc
inc [device.tx_free_des]
cmp [device.tx_free_des], TX_DES_COUNT
jle @f
mov [device.tx_free_des], TX_DES_COUNT
@@:
jmp .loop_tx
.end_tx:
;------------------------------------------------------
; here must be called standard Ethernet Tx Irq Handler
;------------------------------------------------------
pop ecx esi ax
;----------------------------------
; RX irq
.not_tx:
test eax, CSR5_RI
jz .not_rx
push ax esi ecx
DEBUGF 1,"RX ok!\n"
;go to current descriptor
mov edi, [device.rx_p_des]
mov eax, [device.rx_crt_des]
mov edx, DES.size
mul edx
add edi, eax
.loop_rx_start_of_packet:
mov eax, [edi+DES.DES0]
test eax, DES0_OWN
jnz .end_rx ; current desc is busy, nothing to do
test eax, RDES0_FS
jz .end_rx ; current desc is NOT first packet, ERROR!
test eax, RDES0_LS ; if not last desc of packet, error for now
jz .end_rx
; .IF ZERO?
; ODS2 <"Net_Interrupt: packet > 1 descriptor, not supported yet :P">
; jmp @@end_rx
; .ENDIF
test eax, RDES0_ES
jnz .end_rx
; .IF !ZERO?
; ODS2 <"Net_Interrupt: RX error">
; jmp @@end_rx
; .ENDIF
mov esi, [edi+DES.realaddr]
mov ecx, [edi+DES.DES0]
shr ecx, RDES0_FL_SH
and ecx, RDES0_FL_MASK
sub ecx, 4 ; crc
DEBUGF 1,"Received packet!, size=%u, addr:%x\n", ecx, esi
push esi edi ecx
stdcall KernelAlloc, ecx ; Allocate a buffer to put packet into
pop ecx edi esi
test eax, eax
jz .fail
push edi
push dword .continue_rx
push ecx eax
mov edi, eax
; update statistics
inc [device.packets_rx]
add dword [device.bytes_rx], ecx
adc dword [device.bytes_rx + 4], 0
; copy packet data
shr cx , 1
jnc .nb
movsb
.nb:
shr cx , 1
jnc .nw
movsw
.nw:
rep movsd
jmp EthReceiver
.continue_rx:
pop edi
; free descriptor
mov [edi+DES.DES0], DES0_OWN
; next descriptor
add edi, DES.size
inc [device.rx_crt_des]
and [device.rx_crt_des], RX_DES_COUNT-1
jmp .loop_rx_start_of_packet
.end_rx:
.fail:
pop ecx esi ax
.not_rx:
jmp .continue
align 4
write_mac: ; in: mac pushed onto stack (as 3 words)
DEBUGF 2,"Writing MAC: "
; write data into driver cache
mov esi, esp
lea edi, [device.mac]
movsd
movsw
add esp, 6
; send setup packet (only if driver is started)
call Send_Setup_Packet
align 4
read_mac:
DEBUGF 1,"Read_mac\n"
ret
align 4
read_mac_eeprom:
DEBUGF 1,"Read_mac_eeprom\n"
lea edi, [device.mac]
mov esi, 20/2 ; read words, start address is 20
.loop:
push esi edi
call SROM_Read_Word
pop edi esi
stosw
inc esi
cmp esi, 26/2
jl .loop
DEBUGF 2,"%x-%x-%x-%x-%x-%x\n",[edi-6]:2,[edi-5]:2,[edi-4]:2,[edi-3]:2,[edi-2]:2,[edi-1]:2
ret
align 4
write_mac_eeprom:
DEBUGF 1,"Write_mac_eeprom\n"
ret
align 4
SROM_GetWidth: ; should be 6 or 8 according to some manuals (returns in ecx)
DEBUGF 1,"SROM_GetWidth\n"
call SROM_Idle
call SROM_EnterAccessMode
; set_io 0
; set_io CSR9
; send 110b
in eax, dx
or eax, CSR9_SROM_DI
call SROM_out
in eax, dx
or eax, CSR9_SROM_DI
call SROM_out
in eax, dx
and eax, not (CSR9_SROM_DI)
call SROM_out
mov ecx,1
.loop2:
Bit_Set CSR9_SROM_CK
SROM_Delay
in eax, dx
and eax, CSR9_SROM_DO
jnz .not_zero
Bit_Clear CSR9_SROM_CK
SROM_Delay
jmp .end_loop2
.not_zero:
Bit_Clear CSR9_SROM_CK
SROM_Delay
inc ecx
cmp ecx, 12
jle .loop2
.end_loop2:
DEBUGF 1,"Srom width=%u\n", ecx
call SROM_Idle
call SROM_EnterAccessMode
call SROM_Idle
ret
align 4
SROM_out:
out dx, eax
SROM_Delay
Bit_Set CSR9_SROM_CK
SROM_Delay
Bit_Clear CSR9_SROM_CK
SROM_Delay
ret
align 4
SROM_EnterAccessMode:
DEBUGF 1,"SROM_EnterAccessMode\n"
set_io 0
set_io CSR9
mov eax, CSR9_SR
out dx, eax
SROM_Delay
Bit_Set CSR9_RD
SROM_Delay
Bit_Clear CSR9_SROM_CK
SROM_Delay
Bit_Set CSR9_SROM_CS
SROM_Delay
ret
align 4
SROM_Idle:
DEBUGF 1,"SROM_Idle\n"
call SROM_EnterAccessMode
; set_io 0
; set_io CSR9
mov ecx, 25
.loop_clk:
Bit_Clear CSR9_SROM_CK
SROM_Delay
Bit_Set CSR9_SROM_CK
SROM_Delay
dec ecx
jnz .loop_clk
Bit_Clear CSR9_SROM_CK
SROM_Delay
Bit_Clear CSR9_SROM_CS
SROM_Delay
xor eax, eax
out dx, eax
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Read serial EEprom word ;;
;; ;;
;; In: esi = read address ;;
;; OUT: ax = data word ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
SROM_Read_Word:
DEBUGF 1,"SROM_Read_word at: %x result: ", esi
set_io 0
set_io CSR9
; enter access mode
mov eax, CSR9_SR + CSR9_RD
out dx , eax
or eax, CSR9_SROM_CS
out dx , eax
; TODO: change this hard-coded 6-bit stuff to use value from srom_getwidth
; send read command "110b" + address to read from
and esi, 111111b
or esi, 110b shl 6
mov ecx, 1 shl 9
.loop_cmd:
mov eax, CSR9_SR + CSR9_RD + CSR9_SROM_CS
test esi, ecx
jz @f
or eax, CSR9_SROM_DI
@@:
out dx , eax
SROM_Delay
or eax, CSR9_SROM_CK
out dx , eax
SROM_Delay
shr ecx, 1
jnz .loop_cmd
; read data from SROM
xor esi, esi
mov ecx, 17 ;;; TODO: figure out why 17, not 16
.loop_read:
mov eax, CSR9_SR + CSR9_RD + CSR9_SROM_CS + CSR9_SROM_CK
out dx , eax
SROM_Delay
in eax, dx
and eax, CSR9_SROM_DO
shr eax, 3
shl esi, 1
or esi, eax
mov eax, CSR9_SR + CSR9_RD + CSR9_SROM_CS
out dx , eax
SROM_Delay
dec ecx
jnz .loop_read
mov eax, esi
DEBUGF 1,"%x\n", ax
ret
;<<<<<<<<<<<<<<<<<<<<<<<<<<<<
;*********************************************************************
;* Media Descriptor Code *
;*********************************************************************
; MII transceiver control section.
; Read and write the MII registers using software-generated serial
; MDIO protocol. See the MII specifications or DP83840A data sheet
; for details.
; The maximum data clock rate is 2.5 Mhz. The minimum timing is usually
; met by back-to-back PCI I/O cycles, but we insert a delay to avoid
; "overclocking" issues or future 66Mhz PCI.
; Read and write the MII registers using software-generated serial
; MDIO protocol. It is just different enough from the EEPROM protocol
; to not share code. The maxium data clock rate is 2.5 Mhz.
MDIO_SHIFT_CLK equ 0x10000
MDIO_DATA_WRITE0 equ 0x00000
MDIO_DATA_WRITE1 equ 0x20000
MDIO_ENB equ 0x00000 ; Ignore the 0x02000 databook setting.
MDIO_ENB_IN equ 0x40000
MDIO_DATA_READ equ 0x80000
; MII transceiver control section.
; Read and write the MII registers using software-generated serial
; MDIO protocol. See the MII specifications or DP83840A data sheet
; for details.
align 4
mdio_read: ; phy_id:edx, location:esi
DEBUGF 1,"mdio read, phy=%x, location=%x", edx, esi
shl edx, 5
or esi, edx
or esi, 0xf6 shl 10
set_io 0
set_io CSR9
; if (tp->chip_id == LC82C168) {
; int i = 1000;
; outl(0x60020000 + (phy_id<<23) + (location<<18), ioaddr + 0xA0);
; inl(ioaddr + 0xA0);
; inl(ioaddr + 0xA0);
; while (--i > 0)
; if ( ! ((retval = inl(ioaddr + 0xA0)) & 0x80000000))
; return retval & 0xffff;
; return 0xffff;
; }
;
; if (tp->chip_id == COMET) {
; if (phy_id == 1) {
; if (location < 7)
; return inl(ioaddr + 0xB4 + (location<<2));
; else if (location == 17)
; return inl(ioaddr + 0xD0);
; else if (location >= 29 && location <= 31)
; return inl(ioaddr + 0xD4 + ((location-29)<<2));
; }
; return 0xffff;
; }
; Establish sync by sending at least 32 logic ones.
mov ecx, 32
.loop:
mov eax, MDIO_ENB or MDIO_DATA_WRITE1
out dx, eax
MDIO_Delay
or eax, MDIO_SHIFT_CLK
out dx, eax
MDIO_Delay
dec ecx
jnz .loop
; Shift the read command bits out.
mov ecx, 1 shl 15
.loop2:
mov eax, MDIO_ENB
test esi, ecx
jz @f
or eax, MDIO_DATA_WRITE1
@@:
out dx, eax
MDIO_Delay
or eax, MDIO_SHIFT_CLK
out dx, eax
MDIO_Delay
shr ecx, 1
jnz .loop2
; Read the two transition, 16 data, and wire-idle bits.
xor esi, esi
mov ecx, 19
.loop3:
mov eax, MDIO_ENB_IN
out dx, eax
MDIO_Delay
shl esi, 1
in eax, dx
test eax, MDIO_DATA_READ
jz @f
inc esi
@@:
mov eax, MDIO_ENB_IN or MDIO_SHIFT_CLK
out dx, eax
MDIO_Delay
dec ecx
jnz .loop3
shr esi, 1
movzx eax, si
DEBUGF 1,", data=%x\n", ax
ret
align 4
mdio_write: ;int phy_id: edx, int location: edi, int value: ax)
DEBUGF 1,"mdio write, phy=%x, location=%x, data=%x\n", edx, edi, ax
shl edi, 18
or edi, 0x5002 shl 16
shl edx, 23
or edi, edx
mov di, ax
set_io 0
set_io CSR9
; if (tp->chip_id == LC82C168) {
; int i = 1000;
; outl(cmd, ioaddr + 0xA0);
; do
; if ( ! (inl(ioaddr + 0xA0) & 0x80000000))
; break;
; while (--i > 0);
; return;
; }
; if (tp->chip_id == COMET) {
; if (phy_id != 1)
; return;
; if (location < 7)
; outl(value, ioaddr + 0xB4 + (location<<2));
; else if (location == 17)
; outl(value, ioaddr + 0xD0);
; else if (location >= 29 && location <= 31)
; outl(value, ioaddr + 0xD4 + ((location-29)<<2));
; return;
; }
; Establish sync by sending at least 32 logic ones.
mov ecx, 32
.loop:
mov eax, MDIO_ENB or MDIO_DATA_WRITE1
out dx, eax
MDIO_Delay
or eax, MDIO_SHIFT_CLK
out dx, eax
MDIO_Delay
dec ecx
jnz .loop
; Shift the command bits out.
mov ecx, 1 shl 31
.loop2:
mov eax, MDIO_ENB
test edi, ecx
jz @f
or eax, MDIO_DATA_WRITE1
@@:
out dx, eax
MDIO_Delay
or eax, MDIO_SHIFT_CLK
out dx, eax
MDIO_Delay
shr ecx, 1
jnz .loop2
; Clear out extra bits.
mov ecx, 2
.loop3:
mov eax, MDIO_ENB
out dx, eax
MDIO_Delay
or eax, MDIO_SHIFT_CLK
out dx, eax
MDIO_Delay
dec ecx
jnz .loop3
ret
; End of code
align 4 ; Place all initialised data here
devices dd 0
version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF)
my_service db 'DEC21X4X',0 ; max 16 chars include zero
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