forked from KolibriOS/kolibrios
1837 lines
57 KiB
NASM
1837 lines
57 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Copyright (C) KolibriOS team 2004-2014. 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 PE DLL native
|
|
entry START
|
|
|
|
CURRENT_API = 0x0200
|
|
COMPATIBLE_API = 0x0100
|
|
API_VERSION = (COMPATIBLE_API shl 16) + CURRENT_API
|
|
|
|
MAX_DEVICES = 16
|
|
|
|
TX_RING_SIZE = 4
|
|
RX_RING_SIZE = 4
|
|
|
|
__DEBUG__ = 1
|
|
__DEBUG_LEVEL__ = 2 ; 1 = verbose, 2 = errors only
|
|
|
|
section '.flat' readable writable executable
|
|
|
|
include '../proc32.inc'
|
|
include '../struct.inc'
|
|
include '../macros.inc'
|
|
include '../fdo.inc'
|
|
include '../netdrv.inc'
|
|
|
|
; Capability flags used in chiplist
|
|
FLAG_HAS_MII = 1 shl 0
|
|
FLAG_HAS_MEDIA_TABLE = 1 shl 1
|
|
FLAG_CSR12_IN_SROM = 1 shl 2
|
|
FLAG_ALWAYS_CHECK_MII = 1 shl 3
|
|
FLAG_HAS_ACPI = 1 shl 4
|
|
|
|
; Chip id's
|
|
DC21040 = 0
|
|
DC21041 = 1
|
|
DC21140 = 2
|
|
DC21142 = 3
|
|
DC21143 = 3
|
|
LC82C168 = 4
|
|
MX98713 = 5
|
|
MX98715 = 6
|
|
MX98725 = 7
|
|
|
|
;-------------------------------------------
|
|
; configuration registers
|
|
;-------------------------------------------
|
|
CFCS = 4 ; configuration and status register
|
|
|
|
CSR0 = 0x00 ; Bus mode
|
|
CSR1 = 0x08 ; Transmit Poll Command
|
|
CSR2 = 0x10 ; Receive Poll Command
|
|
CSR3 = 0x18 ; Receive list base address
|
|
CSR4 = 0x20 ; Transmit list base address
|
|
CSR5 = 0x28 ; Status
|
|
CSR6 = 0x30 ; Operation mode
|
|
CSR7 = 0x38 ; Interrupt enable
|
|
CSR8 = 0x40 ; Missed frames and overflow counter
|
|
CSR9 = 0x48 ; Boot ROM, serial ROM, and MII management
|
|
CSR10 = 0x50 ; Boot ROM programming address
|
|
CSR11 = 0x58 ; General-purpose timer
|
|
CSR12 = 0x60 ; General-purpose port
|
|
CSR13 = 0x68
|
|
CSR14 = 0x70
|
|
CSR15 = 0x78 ; Watchdog timer
|
|
|
|
;--------bits/commands of CSR0-------------------
|
|
CSR0_RESET = 1b
|
|
|
|
CSR0_WIE = 1 shl 24 ; Write and Invalidate Enable
|
|
CSR0_RLE = 1 shl 23 ; PCI Read Line Enable
|
|
CSR0_RML = 1 shl 21 ; PCI Read Multiple
|
|
|
|
CSR0_CACHEALIGN_NONE = 00b shl 14
|
|
CSR0_CACHEALIGN_32 = 01b shl 14
|
|
CSR0_CACHEALIGN_64 = 10b shl 14
|
|
CSR0_CACHEALIGN_128 = 11b shl 14
|
|
|
|
; using values from linux driver..
|
|
CSR0_DEFAULT = CSR0_WIE + CSR0_RLE + CSR0_RML + CSR0_CACHEALIGN_NONE
|
|
|
|
;------- CSR5 -STATUS- bits --------------------------------
|
|
CSR5_TI = 0x00000001 ;1 shl 0 ; Transmit interupt - frame transmition completed
|
|
CSR5_TPS = 0x00000002 ;1 shl 1 ; Transmit process stopped
|
|
CSR5_TU = 0x00000004 ;1 shl 2 ; Transmit Buffer unavailable
|
|
CSR5_TJT = 0x00000008 ;1 shl 3 ; Transmit Jabber Timeout (transmitter had been excessively active)
|
|
CSR5_LP = 0x00000010 ;1 shl 4 ; Link pass
|
|
CSR5_UNF = 0x00000020 ;1 shl 5 ; Transmit underflow - FIFO underflow
|
|
CSR5_RI = 0x00000040 ;1 shl 6 ; Receive Interrupt
|
|
CSR5_RU = 0x00000080 ;1 shl 7 ; Receive Buffer unavailable
|
|
CSR5_RPS = 0x00000100 ;1 shl 8 ; Receive Process stopped
|
|
CSR5_RWT = 0x00000200 ;1 shl 9 ; Receive Watchdow Timeout
|
|
CSR5_ETI = 0x00000400 ;1 shl 10 ; Early transmit Interrupt
|
|
CSR5_GTE = 0x00000800 ;1 shl 11 ; General Purpose Timer Expired
|
|
CSR5_LF = 0x00001000 ;1 shl 12 ; Link Fail
|
|
CSR5_FBE = 0x00002000 ;1 shl 13 ; Fatal bus error
|
|
CSR5_ERI = 0x00004000 ;1 shl 14 ; Early receive Interrupt
|
|
CSR5_AIS = 0x00008000 ;1 shl 15 ; Abnormal interrupt summary
|
|
CSR5_NIS = 0x00010000 ;1 shl 16 ; normal interrupt summary
|
|
CSR5_RS_SH = 17 ; Receive process state -shift
|
|
CSR5_RS_MASK = 111b ; -mask
|
|
CSR5_TS_SH = 20 ; Transmit process state -shift
|
|
CSR5_TS_MASK = 111b ; -mask
|
|
CSR5_EB_SH = 23 ; Error bits -shift
|
|
CSR5_EB_MASK = 111b ; Error bits -mask
|
|
|
|
;CSR5 TS values
|
|
CSR5_TS_STOPPED = 000b
|
|
CSR5_TS_RUNNING_FETCHING_DESC = 001b
|
|
CSR5_TS_RUNNING_WAITING_TX = 010b
|
|
CSR5_TS_RUNNING_READING_BUFF = 011b
|
|
CSR5_TS_RUNNING_SETUP_PCKT = 101b
|
|
CSR5_TS_SUSPENDED = 110b
|
|
CSR5_TS_RUNNING_CLOSING_DESC = 111b
|
|
|
|
;------- CSR6 -OPERATION MODE- bits --------------------------------
|
|
CSR6_HP = 1 shl 0 ; Hash/Perfect Receive Filtering mode
|
|
CSR6_SR = 1 shl 1 ; Start/Stop receive
|
|
CSR6_HO = 1 shl 2 ; Hash only Filtering mode
|
|
CSR6_PB = 1 shl 3 ; Pass bad frames
|
|
CSR6_IF = 1 shl 4 ; Inverse filtering
|
|
CSR6_SB = 1 shl 5 ; Start/Stop backoff counter
|
|
CSR6_PR = 1 shl 6 ; Promiscuous mode -default after reset
|
|
CSR6_PM = 1 shl 7 ; Pass all multicast
|
|
CSR6_F = 1 shl 9 ; Full Duplex mode
|
|
CSR6_OM_SH = 10 ; Operating Mode -shift
|
|
CSR6_OM_MASK = 11b ; -mask
|
|
CSR6_FC = 1 shl 12 ; Force Collision Mode
|
|
CSR6_ST = 1 shl 13 ; Start/Stop Transmission Command
|
|
CSR6_TR_SH = 14 ; Threshold Control -shift
|
|
CSR6_TR_MASK = 11b ; -mask
|
|
CSR6_CA = 1 shl 17 ; Capture Effect Enable
|
|
CSR6_PS = 1 shl 18 ; Port select SRL / MII/SYM
|
|
CSR6_HBD = 1 shl 19 ; Heartbeat Disable
|
|
CSR6_SF = 1 shl 21 ; Store and Forward -transmit full packet only
|
|
CSR6_TTM = 1 shl 22 ; Transmit Threshold Mode -
|
|
CSR6_PCS = 1 shl 23 ; PCS active and MII/SYM port operates in symbol mode
|
|
CSR6_SCR = 1 shl 24 ; Scrambler Mode
|
|
CSR6_MBO = 1 shl 25 ; Must Be One
|
|
CSR6_RA = 1 shl 30 ; Receive All
|
|
CSR6_SC = 1 shl 31 ; Special Capture Effect Enable
|
|
|
|
|
|
;------- CSR7 -INTERRUPT ENABLE- bits --------------------------------
|
|
CSR7_TI = 1 shl 0 ; transmit Interrupt Enable (set with CSR7<16> & CSR5<0> )
|
|
CSR7_TS = 1 shl 1 ; transmit Stopped Enable (set with CSR7<15> & CSR5<1> )
|
|
CSR7_TU = 1 shl 2 ; transmit buffer underrun Enable (set with CSR7<16> & CSR5<2> )
|
|
CSR7_TJ = 1 shl 3 ; transmit jabber timeout enable (set with CSR7<15> & CSR5<3> )
|
|
CSR7_UN = 1 shl 5 ; underflow Interrupt enable (set with CSR7<15> & CSR5<5> )
|
|
CSR7_RI = 1 shl 6 ; receive Interrupt enable (set with CSR7<16> & CSR5<5> )
|
|
CSR7_RU = 1 shl 7 ; receive buffer unavailable enable (set with CSR7<15> & CSR5<7> )
|
|
CSR7_RS = 1 shl 8 ; Receive stopped enable (set with CSR7<15> & CSR5<8> )
|
|
CSR7_RW = 1 shl 9 ; receive watchdog timeout enable (set with CSR7<15> & CSR5<9> )
|
|
CSR7_ETE = 1 shl 10 ; Early transmit Interrupt enable (set with CSR7<15> & CSR5<10> )
|
|
CSR7_GPT = 1 shl 11 ; general purpose timer enable (set with CSR7<15> & CSR5<11> )
|
|
CSR7_FBE = 1 shl 13 ; Fatal bus error enable (set with CSR7<15> & CSR5<13> )
|
|
CSR7_ERE = 1 shl 14 ; Early receive enable (set with CSR7<16> & CSR5<14> )
|
|
CSR7_AI = 1 shl 15 ; Abnormal Interrupt Summary Enable (enables CSR5<0,3,7,8,9,10,13>)
|
|
CSR7_NI = 1 shl 16 ; Normal Interrup Enable (enables CSR5<0,2,6,11,14>)
|
|
|
|
CSR7_DEFAULT = CSR7_TI + CSR7_TS + CSR7_RI + CSR7_RS + CSR7_TU + CSR7_TJ + CSR7_UN + \
|
|
CSR7_RU + CSR7_RW + CSR7_FBE + CSR7_AI + CSR7_NI
|
|
;common to Rx and Tx
|
|
DES0_OWN = 1 shl 31 ; if set, the NIC controls the descriptor, otherwise driver 'owns' the descriptors
|
|
|
|
;receive
|
|
RDES0_ZER = 1 shl 0 ; must be 0 if legal length :D
|
|
RDES0_CE = 1 shl 1 ; CRC error, valid only on last desc (RDES0<8>=1)
|
|
RDES0_DB = 1 shl 2 ; dribbling bit - not multiple of 8 bits, valid only on last desc (RDES0<8>=1)
|
|
RDES0_RE = 1 shl 3 ; Report on MII error.. i dont realy know what this means :P
|
|
RDES0_RW = 1 shl 4 ; received watchdog timer expiration - must set CSR5<9>, valid only on last desc (RDES0<8>=1)
|
|
RDES0_FT = 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 = 1 shl 6 ; Collision seen, valid only on last desc (RDES0<8>=1)
|
|
RDES0_TL = 1 shl 7 ; Too long(>1518)-NOT AN ERROR, valid only on last desc (RDES0<8>=1)
|
|
RDES0_LS = 1 shl 8 ; Last descriptor of current frame
|
|
RDES0_FS = 1 shl 9 ; First descriptor of current frame
|
|
RDES0_MF = 1 shl 10 ; Multicast frame, valid only on last desc (RDES0<8>=1)
|
|
RDES0_RF = 1 shl 11 ; Runt frame, valid only on last desc (RDES0<8>=1) and id overflow
|
|
RDES0_DT_SERIAL = 00b shl 12 ; Data type-Serial recv frame, valid only on last desc (RDES0<8>=1)
|
|
RDES0_DT_INTERNAL = 01b shl 12 ; Data type-Internal loopback recv frame, valid only on last desc (RDES0<8>=1)
|
|
RDES0_DT_EXTERNAL = 11b shl 12 ; Data type-External loopback recv frame, valid only on last desc (RDES0<8>=1)
|
|
RDES0_DE = 1 shl 14 ; Descriptor error - cant own a new desc and frame doesnt fit, valid only on last desc (RDES0<8>=1)
|
|
RDES0_ES = 1 shl 15 ; Error Summmary - bits 1+6+11+14, valid only on last desc (RDES0<8>=1)
|
|
RDES0_FL_SH = 16 ; Field length shift, valid only on last desc (RDES0<8>=1)
|
|
RDES0_FL_MASK = 11111111111111b ; Field length mask (+CRC), valid only on last desc (RDES0<8>=1)
|
|
RDES0_FF = 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 = 11111111111b ; first buffer size MASK
|
|
RDES1_RBS2_SH = 11 ; second buffer size SHIFT
|
|
RDES1_RBS2_MASK = 11111111111b ; second buffer size MASK
|
|
RDES1_RCH = 1 shl 24 ; Second address chained - second address (buffer) is next desc address
|
|
RDES1_RER = 1 shl 25 ; Receive End of Ring - final descriptor, NIC must return to first desc
|
|
|
|
;transmition
|
|
TDES0_DE = 1 shl 0 ; Deffered
|
|
TDES0_UF = 1 shl 1 ; Underflow error
|
|
TDES0_LF = 1 shl 2 ; Link fail report (only if CSR6<23>=1)
|
|
TDES0_CC_SH = 3 ; Collision Count shift - no of collision before transmition
|
|
TDES0_CC_MASK = 1111b ; Collision Count mask
|
|
TDES0_HF = 1 shl 7 ; Heartbeat fail
|
|
TDES0_EC = 1 shl 8 ; Excessive Collisions - >16 collisions
|
|
TDES0_LC = 1 shl 9 ; Late collision
|
|
TDES0_NC = 1 shl 10 ; No carrier
|
|
TDES0_LO = 1 shl 11 ; Loss of carrier
|
|
TDES0_TO = 1 shl 14 ; Transmit Jabber Timeout
|
|
TDES0_ES = 1 shl 15 ; Error summary TDES0<1+8+9+10+11+14>=1
|
|
|
|
TDES1_TBS1_MASK = 11111111111b ; Buffer 1 size mask
|
|
TDES1_TBS2_SH = 11 ; Buffer 2 size shift
|
|
TDES1_TBS2_MASK = 11111111111b ; Buffer 2 size mask
|
|
TDES1_FT0 = 1 shl 22 ; Filtering type 0
|
|
TDES1_DPD = 1 shl 23 ; Disabled padding for packets <64bytes, no padding
|
|
TDES1_TCH = 1 shl 24 ; Second address chained - second buffer pointer is to next desc
|
|
TDES1_TER = 1 shl 25 ; Transmit end of ring - final descriptor
|
|
TDES1_AC = 1 shl 26 ; Add CRC disable -pretty obvious
|
|
TDES1_SET = 1 shl 27 ; Setup packet
|
|
TDES1_FT1 = 1 shl 28 ; Filtering type 1
|
|
TDES1_FS = 1 shl 29 ; First segment - buffer is first segment of frame
|
|
TDES1_LS = 1 shl 30 ; Last segment
|
|
TDES1_IC = 1 shl 31 ; Interupt on completion (CSR5<0>=1) valid when TDES1<30>=1
|
|
|
|
FULL_DUPLEX_MAGIC = 0x6969
|
|
;MAX_ETH_FRAME_SIZE = 1514
|
|
|
|
struct device ETH_DEVICE
|
|
|
|
io_addr dd ?
|
|
pci_bus dd ?
|
|
pci_dev dd ?
|
|
irq_line db ?
|
|
rb 3 ; alignment
|
|
|
|
id dd ? ; identification number
|
|
io_size dd ?
|
|
flags dd ?
|
|
csr6 dd ?
|
|
csr7 dd ?
|
|
if_port dd ?
|
|
saved_if_port dd ?
|
|
default_port dd ?
|
|
mtable dd ?
|
|
mii_cnt dd ?
|
|
|
|
cur_rx dd ?
|
|
cur_tx dd ? ; Tx current descriptor to write data to
|
|
last_tx dd ? ; Tx current descriptor to read TX completion
|
|
|
|
rb 0x100-($ and 0xff) ; align 256
|
|
rx_ring rb RX_RING_SIZE*2*sizeof.desc
|
|
|
|
rb 0x100-($ and 0xff) ; align 256
|
|
tx_ring rb TX_RING_SIZE*2*sizeof.desc
|
|
|
|
ends
|
|
|
|
;----------- descriptor structure ---------------------
|
|
struct desc
|
|
status dd ? ; bit 31 is 'own' and rest is 'status'
|
|
length dd ? ; control bits + bytes-count buffer 1 + bytes-count buffer 2
|
|
buffer1 dd ? ; pointer to buffer1
|
|
buffer2 dd ? ; pointer to buffer2
|
|
ends
|
|
|
|
;=============================================================================
|
|
; serial ROM operations
|
|
;=============================================================================
|
|
CSR9_SR = 1 shl 11 ; SROM Select
|
|
CSR9_RD = 1 shl 14 ; ROM Read Operation
|
|
CSR9_SROM_DO = 1 shl 3 ; Data Out for SROM
|
|
CSR9_SROM_DI = 1 shl 2 ; Data In to SROM
|
|
CSR9_SROM_CK = 1 shl 1 ; clock for SROM
|
|
CSR9_SROM_CS = 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
|
|
}
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; proc START ;;
|
|
;; ;;
|
|
;; (standard driver proc) ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
proc START c, reason:dword, cmdline:dword
|
|
|
|
cmp [reason], DRV_ENTRY
|
|
jne .fail
|
|
|
|
DEBUGF 2,"Loading driver\n"
|
|
invoke RegService, my_service, service_proc
|
|
ret
|
|
|
|
.fail:
|
|
xor eax, eax
|
|
ret
|
|
|
|
endp
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; proc SERVICE_PROC ;;
|
|
;; ;;
|
|
;; (standard driver proc) ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
align 4
|
|
proc service_proc stdcall, ioctl:dword
|
|
|
|
mov edx, [ioctl]
|
|
mov eax, [edx + IOCTL.io_code]
|
|
|
|
;------------------------------------------------------
|
|
|
|
cmp eax, 0 ;SRV_GETVERSION
|
|
jne @F
|
|
|
|
cmp [edx + IOCTL.out_size], 4
|
|
jb .fail
|
|
mov eax, [edx + IOCTL.output]
|
|
mov [eax], dword API_VERSION
|
|
|
|
xor eax, eax
|
|
ret
|
|
|
|
;------------------------------------------------------
|
|
@@:
|
|
cmp eax, 1 ;SRV_HOOK
|
|
jne .fail
|
|
|
|
cmp [edx + IOCTL.inp_size], 3 ; Data input must be at least 3 bytes
|
|
jb .fail
|
|
|
|
mov eax, [edx + 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, [edx + IOCTL.input] ; get the pci bus and device numbers
|
|
mov ax, [eax+1] ;
|
|
.nextdevice:
|
|
mov ebx, [esi]
|
|
cmp al, byte[ebx + device.pci_bus]
|
|
jne @f
|
|
cmp ah, byte[ebx + 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, sizeof.device, .fail
|
|
|
|
; Fill in the direct call addresses into the struct
|
|
mov [ebx + device.reset], reset
|
|
mov [ebx + device.transmit], transmit
|
|
mov [ebx + device.unload], unload
|
|
mov [ebx + device.name], my_service
|
|
|
|
; save the pci bus and device numbers
|
|
mov eax, [edx + IOCTL.input]
|
|
movzx ecx, byte[eax+1]
|
|
mov [ebx + device.pci_bus], ecx
|
|
movzx ecx, byte[eax+2]
|
|
mov [ebx + device.pci_dev], ecx
|
|
|
|
; Now, it's time to find the base io addres of the PCI device
|
|
stdcall PCI_find_io, [ebx + device.pci_bus], [ebx + device.pci_dev]
|
|
mov [ebx + device.io_addr], eax
|
|
|
|
; We've found the io address, find IRQ now
|
|
invoke PciRead8, [ebx + device.pci_bus], [ebx + device.pci_dev], PCI_header00.interrupt_line
|
|
mov [ebx + device.irq_line], al
|
|
|
|
DEBUGF 2,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\
|
|
[ebx + device.pci_dev]:1,[ebx + device.pci_bus]:1,[ebx + device.irq_line]:1,[ebx + device.io_addr]:8
|
|
|
|
; 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 [ebx + device.type], NET_TYPE_ETH
|
|
invoke 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"
|
|
invoke 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"
|
|
invoke 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
|
|
; - call unregister function in kernel
|
|
; - Remove all allocated structures and buffers the card used
|
|
|
|
or eax, -1
|
|
ret
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Probe ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
align 4
|
|
probe:
|
|
|
|
DEBUGF 2,"Probing\n"
|
|
|
|
invoke PciRead32, [ebx + device.pci_bus], [ebx + device.pci_dev], 0 ; get device/vendor id
|
|
mov esi, chiplist
|
|
.loop:
|
|
cmp dword[esi], eax
|
|
je .got_it
|
|
add esi, 6*4
|
|
cmp dword[esi], 0
|
|
jne .loop
|
|
DEBUGF 2, "Unknown chip: 0x%x aborting\n", eax
|
|
|
|
or eax, -1
|
|
ret
|
|
|
|
.got_it:
|
|
lodsd
|
|
lodsd
|
|
mov [ebx + device.id], eax
|
|
lodsd
|
|
mov [ebx + device.io_size], eax
|
|
lodsd
|
|
mov [ebx + device.csr7], eax
|
|
lodsd
|
|
mov [ebx + device.name], eax
|
|
DEBUGF 1, "Detected chip = %s\n", eax
|
|
lodsd
|
|
mov [ebx + device.flags], eax
|
|
|
|
; PROBE1
|
|
|
|
test [ebx + device.flags], FLAG_HAS_ACPI
|
|
jz .no_acpi
|
|
DEBUGF 1, "Device has ACPI capabilities, time to wake it up\n"
|
|
xor eax, eax
|
|
invoke PciWrite32, [ebx + device.pci_bus], [ebx + device.pci_dev], 0x40, eax ; wake up the 21143
|
|
.no_acpi:
|
|
|
|
call SROM_GetWidth ; TODO: use this value returned in ecx in the read_word routine!
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Reset ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
align 4
|
|
reset:
|
|
|
|
DEBUGF 2,"Reset\n"
|
|
|
|
; Make the device a bus master
|
|
invoke PciRead32, [ebx + device.pci_bus], [ebx + device.pci_dev], PCI_header00.command
|
|
or al, PCI_CMD_MASTER
|
|
invoke PciWrite32, [ebx + device.pci_bus], [ebx + device.pci_dev], PCI_header00.command, eax
|
|
|
|
; Stop TX and RX
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR6
|
|
in eax, dx
|
|
and eax, not (CSR6_ST or CSR6_SR)
|
|
out dx, eax
|
|
|
|
; Clear missed packet counter
|
|
set_io [ebx + device.io_addr], CSR8
|
|
in eax, dx
|
|
|
|
;; wait at least 50 PCI cycles
|
|
; mov esi, 1000
|
|
; invoke Sleep
|
|
|
|
cmp [ebx + device.id], DC21041
|
|
jne @f
|
|
; set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR9
|
|
in eax, dx
|
|
test eax, 0x8000
|
|
jz @f
|
|
DEBUGF 1, "21040 compatibility mode\n"
|
|
mov [ebx + device.id], DC21040
|
|
@@:
|
|
|
|
|
|
;;; Find connected mii xceivers? 993-1043
|
|
|
|
; Reset the xcvr interface and turn on heartbeat.
|
|
cmp [ebx + device.id], DC21041
|
|
jne @f
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR13
|
|
xor eax, eax
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR14
|
|
dec eax
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR15
|
|
inc eax
|
|
mov al, 8
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR6
|
|
in eax, dx
|
|
or ax, CSR6_ST
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR13
|
|
xor eax, eax
|
|
mov ax, 0xEF05
|
|
out dx, eax
|
|
jmp .reset_done
|
|
@@:
|
|
cmp [ebx + device.id], DC21040
|
|
jne @f
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR13
|
|
xor eax, eax
|
|
out dx, eax
|
|
mov al, 4
|
|
out dx, eax
|
|
jmp .reset_done
|
|
@@:
|
|
cmp [ebx + device.id], DC21140
|
|
jne @f
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR12
|
|
mov eax, 0x100
|
|
out dx, eax
|
|
jmp .reset_done
|
|
@@:
|
|
cmp [ebx + device.id], DC21142
|
|
jne @f
|
|
; if tp->mii_cnt
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR6
|
|
mov eax, 0x82020000
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR13
|
|
xor eax, eax
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR14
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR6
|
|
mov eax, 0x820E0000
|
|
out dx, eax
|
|
jmp .reset_done
|
|
;;;; TODO
|
|
@@:
|
|
cmp [ebx + device.id], LC82C168
|
|
jne @f
|
|
; TODO
|
|
@@:
|
|
cmp [ebx + device.id], MX98713
|
|
jne @f
|
|
; TODO
|
|
@@:
|
|
|
|
.reset_done:
|
|
|
|
|
|
; OPEN
|
|
|
|
; Reset chip
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR0
|
|
mov eax, CSR0_RESET
|
|
out dx, eax
|
|
|
|
; wait at least 50 PCI cycles
|
|
mov esi, 100
|
|
invoke Sleep
|
|
|
|
;-----------------------------------
|
|
; Read mac from eeprom to driver ram
|
|
|
|
call read_mac_eeprom
|
|
|
|
;--------------------------------
|
|
; insert irq handler on given irq
|
|
|
|
movzx eax, [ebx + device.irq_line]
|
|
DEBUGF 1,"Attaching int handler to irq %x\n", eax:1
|
|
invoke AttachIntHandler, eax, int_handler, ebx
|
|
test eax, eax
|
|
jnz @f
|
|
DEBUGF 2,"Could not attach int handler!\n"
|
|
or eax, -1
|
|
ret
|
|
@@:
|
|
|
|
;----------------
|
|
; Set cache modes
|
|
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR0
|
|
mov eax, 0x01A00000 or 0x4800 ; CSR0_DEFAULT
|
|
out dx, eax
|
|
|
|
; wait at least 50 PCI cycles
|
|
mov esi, 100
|
|
invoke Sleep
|
|
|
|
;---------------------------
|
|
; Initialize RX and TX rings
|
|
|
|
call init_ring
|
|
test eax, eax
|
|
jnz .err
|
|
|
|
;-------------------
|
|
; Set receive filter
|
|
|
|
call create_setup_frame
|
|
|
|
;--------------------------------------------
|
|
; setup CSR3 & CSR4 (pointers to descriptors)
|
|
|
|
lea eax, [ebx + device.rx_ring]
|
|
invoke GetPhysAddr
|
|
DEBUGF 1,"RX descriptor base address: %x\n", eax
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR3
|
|
out dx, eax
|
|
|
|
lea eax, [ebx + device.tx_ring]
|
|
invoke GetPhysAddr
|
|
DEBUGF 1,"TX descriptor base address: %x\n", eax
|
|
set_io [ebx + device.io_addr], CSR4
|
|
out dx, eax
|
|
|
|
; Select media
|
|
push [ebx + device.if_port]
|
|
pop [ebx + device.saved_if_port]
|
|
cmp [ebx + device.if_port], 0
|
|
jne @f
|
|
push [ebx + device.default_port]
|
|
pop [ebx + device.if_port]
|
|
@@:
|
|
cmp [ebx + device.id], DC21041
|
|
jne @f
|
|
cmp [ebx + device.if_port], 4
|
|
jbe @f
|
|
; invalid port, select inital TP, autosense, autonegotiate
|
|
mov [ebx + device.if_port], 4 ; CHECKME
|
|
@@:
|
|
|
|
; Allow selecting a default media
|
|
cmp [ebx + device.mtable], 0
|
|
je .media_picked
|
|
|
|
cmp [ebx + device.if_port], 0
|
|
je @f
|
|
;; TODO
|
|
jmp .media_picked
|
|
@@:
|
|
|
|
.media_picked:
|
|
mov [ebx + device.csr6], 0
|
|
|
|
cmp [ebx + device.id], DC21142
|
|
jne @f
|
|
cmp [ebx + device.if_port], 0
|
|
jne @f
|
|
;; TODO
|
|
mov [ebx + device.csr6], 0x82420200
|
|
mov [ebx + device.if_port], 11
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR14
|
|
mov eax, 0x0003FFF
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR15
|
|
xor eax, eax
|
|
mov al, 8
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR13
|
|
mov al, 1
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR12
|
|
mov ax, 0x1301
|
|
out dx, eax
|
|
|
|
@@:
|
|
cmp [ebx + device.id], LC82C168
|
|
jne @f
|
|
;; TODO
|
|
@@:
|
|
cmp [ebx + device.id], MX98713
|
|
jne @f
|
|
|
|
@@:
|
|
;; wait a bit
|
|
; mov esi, 500
|
|
; invoke Sleep
|
|
|
|
; else:
|
|
xor eax, eax
|
|
inc eax
|
|
call select_media
|
|
|
|
; Start the chip's tx to process setup frame
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR6
|
|
mov eax, [ebx + device.csr6]
|
|
out dx, eax
|
|
or ax, CSR6_ST
|
|
out dx, eax
|
|
|
|
; Enable interrupts by setting the interrupt mask.
|
|
set_io [ebx + device.io_addr], CSR5
|
|
mov eax, [ebx + device.csr7]
|
|
DEBUGF 1, "Setting CSR7 to 0x%x\n", eax
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR7
|
|
out dx, eax
|
|
|
|
; Enable receiver
|
|
set_io [ebx + device.io_addr], CSR6
|
|
mov eax, [ebx + device.csr6]
|
|
or eax, 0x2002 + CSR6_RA
|
|
out dx, eax
|
|
|
|
; RX poll demand
|
|
set_io [ebx + device.io_addr], CSR2
|
|
xor eax, eax
|
|
out dx, eax
|
|
|
|
; Set the mtu, kernel will be able to send now
|
|
mov [ebx + device.mtu], 1514
|
|
|
|
; Set link state to unknown
|
|
mov [ebx + device.state], ETH_LINK_UNKNOWN
|
|
|
|
DEBUGF 1,"Reset completed\n"
|
|
; xor eax, eax
|
|
ret
|
|
|
|
.err:
|
|
DEBUGF 2,"Reset failed\n"
|
|
or eax, -1
|
|
ret
|
|
|
|
|
|
|
|
align 4
|
|
init_ring:
|
|
|
|
DEBUGF 1,"Init ring\n"
|
|
|
|
;---------------------
|
|
; Setup RX descriptors
|
|
|
|
lea eax, [ebx + device.rx_ring]
|
|
invoke GetPhysAddr
|
|
mov edx, eax
|
|
push eax
|
|
lea edi, [ebx + device.rx_ring]
|
|
mov ecx, RX_RING_SIZE
|
|
.loop_rx_des:
|
|
DEBUGF 1,"RX descriptor 0x%x\n", edi
|
|
add edx, sizeof.desc
|
|
mov [edi + desc.status], DES0_OWN
|
|
mov [edi + desc.length], 1536
|
|
push edx edi ecx
|
|
invoke KernelAlloc, 1536
|
|
pop ecx edi edx
|
|
test eax, eax
|
|
jz .out_of_mem
|
|
mov [edi + RX_RING_SIZE*sizeof.desc], eax
|
|
invoke GetPhysAddr
|
|
mov [edi + desc.buffer1], eax
|
|
mov [edi + desc.buffer2], edx
|
|
add edi, sizeof.desc
|
|
dec ecx
|
|
jnz .loop_rx_des
|
|
; set last descriptor as LAST
|
|
or [edi - sizeof.desc + desc.length], RDES1_RER ; EndOfRing
|
|
pop [edi - sizeof.desc + desc.buffer2] ; point it to the first descriptor
|
|
|
|
;---------------------
|
|
; Setup TX descriptors
|
|
|
|
lea eax, [ebx + device.tx_ring]
|
|
invoke GetPhysAddr
|
|
mov edx, eax
|
|
push eax
|
|
lea edi, [ebx + device.tx_ring]
|
|
mov ecx, TX_RING_SIZE
|
|
.loop_tx_des:
|
|
DEBUGF 1,"TX descriptor 0x%x\n", edi
|
|
add edx, sizeof.desc
|
|
mov [edi + desc.status], 0 ; owned by driver
|
|
mov [edi + desc.length], 0
|
|
mov [edi + desc.buffer1], 0
|
|
mov [edi + desc.buffer2], edx ; pointer to next descr
|
|
add edi, sizeof.desc
|
|
dec ecx
|
|
jnz .loop_tx_des
|
|
; set last descriptor as LAST
|
|
or [edi - sizeof.desc + desc.length], TDES1_TER ; EndOfRing
|
|
pop [edi - sizeof.desc + desc.buffer2] ; point it to the first descriptor
|
|
|
|
;------------------
|
|
; Reset descriptors
|
|
|
|
xor eax, eax
|
|
mov [ebx + device.cur_tx], eax
|
|
mov [ebx + device.last_tx], eax
|
|
mov [ebx + device.cur_rx], eax
|
|
|
|
ret
|
|
|
|
.out_of_mem:
|
|
DEBUGF 2, "Out of memory!\n"
|
|
pop eax
|
|
or eax, -1
|
|
ret
|
|
|
|
|
|
; IN: eax = startup
|
|
align 4
|
|
select_media:
|
|
|
|
DEBUGF 1, "Selecting media\n"
|
|
|
|
cmp [ebx + device.mtable], 0
|
|
je .no_mtable
|
|
DEBUGF 1, "Device has a media table\n"
|
|
|
|
|
|
; default:
|
|
mov eax, 0x020E0000
|
|
jmp .update_csr6
|
|
|
|
.no_mtable:
|
|
DEBUGF 1, "Device has no media table\n"
|
|
|
|
cmp [ebx + device.id], DC21041
|
|
jne .not_41
|
|
DEBUGF 1, "DC21041\n"
|
|
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR13
|
|
xor eax, eax
|
|
out dx, eax ; reset serial interface
|
|
set_io [ebx + device.io_addr], CSR14
|
|
mov eax, 0x7F3F ;0x7F3F ;0x7F3D ; 10T-FD
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR15
|
|
mov eax, 0x0008 ;0x0008 ;0x0008 ; 10T-FD
|
|
out dx, eax
|
|
set_io [ebx + device.io_addr], CSR13
|
|
mov eax, 0xEF05 ;0xEF01 ;0xEF09 ; 10T-FD
|
|
out dx, eax
|
|
mov eax, 0x80020000
|
|
jmp .update_csr6
|
|
.not_41:
|
|
cmp [ebx + device.id], LC82C168
|
|
jne .not_LC
|
|
DEBUGF 1, "LC82C168\n"
|
|
|
|
;; TODO
|
|
|
|
mov eax, 0x812C0000
|
|
jmp .update_csr6
|
|
.not_LC:
|
|
cmp [ebx + device.id], DC21040
|
|
jne .not_40
|
|
DEBUGF 1, "DC21040\n"
|
|
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR11
|
|
mov eax, FULL_DUPLEX_MAGIC
|
|
out dx, eax
|
|
; reset serial interface
|
|
set_io [ebx + device.io_addr], CSR13
|
|
xor eax, eax
|
|
out dx, eax
|
|
|
|
set_io [ebx + device.io_addr], CSR13
|
|
xor eax, eax
|
|
cmp [ebx + device.if_port], 0
|
|
je @f
|
|
mov al, 0xc
|
|
out dx, eax
|
|
mov eax, 0x01860000
|
|
jmp .update_csr6
|
|
@@:
|
|
mov al, 4
|
|
out dx, eax
|
|
mov eax, 0x00420000
|
|
jmp .update_csr6
|
|
|
|
.not_40:
|
|
DEBUGF 1, "Unkown chip with no media table\n"
|
|
|
|
cmp [ebx + device.default_port], 0
|
|
jne .not_0
|
|
cmp [ebx + device.mii_cnt], 0
|
|
je @f
|
|
mov [ebx + device.if_port], 11
|
|
jmp .not_0
|
|
@@:
|
|
mov [ebx + device.if_port], 3
|
|
.not_0:
|
|
mov eax, 0x020E0000 ;;;;;
|
|
|
|
.update_csr6:
|
|
and [ebx + device.csr6], 0xfdff
|
|
or ax, 0x0200 ;; FULL DUPLEX
|
|
or [ebx + device.csr6], eax
|
|
DEBUGF 1, "new CSR6: 0x%x\n", [ebx + device.csr6]
|
|
|
|
ret
|
|
|
|
|
|
align 4
|
|
start_link:
|
|
|
|
DEBUGF 1,"Starting link\n"
|
|
|
|
; TODO: write working code here
|
|
|
|
ret
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Send setup packet ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
align 4
|
|
create_setup_frame:
|
|
|
|
DEBUGF 1,"Creating setup packet\n"
|
|
|
|
invoke KernelAlloc, 192
|
|
test eax, eax
|
|
jz .err
|
|
|
|
push eax
|
|
|
|
mov edi, eax
|
|
xor eax, eax
|
|
dec ax
|
|
stosd
|
|
stosd
|
|
stosd
|
|
|
|
mov ecx, 15
|
|
.loop:
|
|
lea esi, [ebx + device.mac]
|
|
lodsw
|
|
stosd
|
|
dec ecx
|
|
jnz .loop
|
|
|
|
pop eax
|
|
|
|
; setup descriptor
|
|
lea edi, [ebx + device.tx_ring]
|
|
DEBUGF 1, "attaching setup packet 0x%x to descriptor 0x%x\n", eax, edi
|
|
mov [edi + TX_RING_SIZE*sizeof.desc], eax
|
|
invoke GetPhysAddr
|
|
mov [edi + desc.buffer1], eax
|
|
mov [edi + desc.length], TDES1_SET + 192 ; size must be EXACTLY 192 bytes + TDES1_IC
|
|
mov [edi + desc.status], DES0_OWN
|
|
DEBUGF 1, "descriptor 0x%x\n", edi
|
|
|
|
; go to next descriptor
|
|
inc [ebx + device.cur_tx]
|
|
|
|
ret
|
|
|
|
.err:
|
|
DEBUGF 2, "Out of memory!\n"
|
|
ret
|
|
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Transmit ;;
|
|
;; ;;
|
|
;; In: buffer pointer in [esp+4] ;;
|
|
;; size of buffer in [esp+8] ;;
|
|
;; pointer to device structure in ebx ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
proc transmit stdcall bufferptr, buffersize
|
|
|
|
pushf
|
|
cli
|
|
|
|
DEBUGF 1,"Transmitting packet, buffer:%x, size:%u\n", [bufferptr], [buffersize]
|
|
mov eax, [bufferptr]
|
|
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 [buffersize], 1514
|
|
ja .fail
|
|
|
|
mov eax, [ebx + device.cur_tx]
|
|
mov edx, sizeof.desc
|
|
mul edx
|
|
lea esi, [ebx + device.tx_ring + eax]
|
|
test [esi + desc.status], DES0_OWN
|
|
jnz .fail
|
|
|
|
DEBUGF 1, "Descriptor is free\n"
|
|
|
|
mov eax, [bufferptr]
|
|
mov [esi + TX_RING_SIZE*sizeof.desc], eax
|
|
invoke GetPhysAddr
|
|
mov [esi + desc.buffer1], eax
|
|
|
|
; set packet size
|
|
mov eax, [esi + desc.length]
|
|
and eax, TDES1_TER ; preserve 'End of Ring' bit
|
|
or eax, [buffersize] ; set size
|
|
or eax, TDES1_FS or TDES1_LS or TDES1_IC ; first descr, last descr, interrupt on complete
|
|
mov [esi + desc.length], eax
|
|
|
|
; set descriptor status
|
|
mov [esi + desc.status], DES0_OWN ; say it is now owned by the 21x4x
|
|
|
|
; Check if transmitter is running
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR6
|
|
in eax, dx
|
|
test eax, CSR6_ST ; if NOT started, start now
|
|
jnz .already_started
|
|
or eax, CSR6_ST
|
|
DEBUGF 1,"(Re) starting TX\n"
|
|
jmp .do_it
|
|
.already_started:
|
|
|
|
; Trigger immediate transmit demand
|
|
set_io [ebx + device.io_addr], CSR1
|
|
xor eax, eax
|
|
.do_it:
|
|
out dx, eax
|
|
|
|
; Update stats
|
|
inc [ebx + device.packets_tx]
|
|
mov eax, [buffersize]
|
|
add dword [ebx + device.bytes_tx], eax
|
|
adc dword [ebx + device.bytes_tx + 4], 0
|
|
|
|
; go to next descriptor
|
|
inc [ebx + device.cur_tx]
|
|
and [ebx + device.cur_tx], TX_RING_SIZE-1
|
|
|
|
DEBUGF 1,"Transmit ok\n"
|
|
popf
|
|
xor eax, eax
|
|
ret
|
|
|
|
.fail:
|
|
DEBUGF 2,"Transmit failed\n"
|
|
invoke KernelFree, [bufferptr]
|
|
popf
|
|
or eax, -1
|
|
ret
|
|
|
|
endp
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; 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]
|
|
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], CSR5
|
|
in eax, dx
|
|
and eax, 0x0001ffff
|
|
out dx, eax ; send it back to ACK
|
|
jnz .got_it
|
|
.continue:
|
|
add esi, 4
|
|
dec ecx
|
|
jnz .nextdevice
|
|
.nothing:
|
|
pop edi esi ebx
|
|
xor eax, eax
|
|
|
|
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 CSR5: %x\n", ebx, eax
|
|
|
|
;----------------------------------
|
|
; TX ok?
|
|
|
|
test eax, CSR5_TI
|
|
jz .not_tx
|
|
|
|
push eax esi ecx
|
|
DEBUGF 1,"TX ok!\n"
|
|
.loop_tx:
|
|
; go to last descriptor
|
|
mov eax, [ebx + device.last_tx]
|
|
mov edx, sizeof.desc
|
|
mul edx
|
|
lea eax, [ebx + device.tx_ring + eax]
|
|
|
|
DEBUGF 1,"descriptor 0x%x\n", eax
|
|
test [eax + desc.status], DES0_OWN ; owned by the card?
|
|
jnz .end_tx
|
|
cmp [eax + desc.buffer1], 0 ; empty descriptor?
|
|
je .end_tx
|
|
|
|
mov [eax + desc.buffer1], 0
|
|
DEBUGF 1, "Free buffer 0x%x\n", [eax + TX_RING_SIZE*sizeof.desc]
|
|
invoke KernelFree, [eax + TX_RING_SIZE*sizeof.desc]
|
|
|
|
; next descriptor
|
|
inc [ebx + device.last_tx]
|
|
and [ebx + device.last_tx], TX_RING_SIZE-1
|
|
|
|
jmp .loop_tx
|
|
.end_tx:
|
|
pop ecx esi eax
|
|
.not_tx:
|
|
|
|
;----------------------------------
|
|
; RX irq
|
|
test eax, CSR5_RI
|
|
jz .not_rx
|
|
push eax esi ecx
|
|
|
|
DEBUGF 1,"RX ok!\n"
|
|
|
|
push ebx
|
|
.rx_loop:
|
|
pop ebx
|
|
|
|
; get current descriptor
|
|
mov eax, [ebx + device.cur_rx]
|
|
mov edx, sizeof.desc
|
|
mul edx
|
|
lea edi, [ebx + device.rx_ring + eax]
|
|
|
|
; now check status
|
|
mov eax, [edi + desc.status]
|
|
|
|
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
|
|
test eax, RDES0_ES
|
|
jnz .end_rx
|
|
|
|
mov esi, [edi + RX_RING_SIZE*sizeof.desc]
|
|
mov ecx, [edi + desc.status]
|
|
shr ecx, RDES0_FL_SH
|
|
and ecx, RDES0_FL_MASK
|
|
sub ecx, 4 ; crc, we dont need it
|
|
|
|
DEBUGF 1,"size=%u, addr:0x%x\n", ecx, esi
|
|
|
|
push esi edi ecx
|
|
invoke KernelAlloc, ecx ; Allocate a buffer to put packet into
|
|
pop ecx edi esi
|
|
test eax, eax
|
|
jz .fail
|
|
|
|
push ebx
|
|
push dword .rx_loop
|
|
push ecx eax
|
|
xchg edi, eax
|
|
|
|
; update statistics
|
|
inc [ebx + device.packets_rx]
|
|
add dword[ebx + device.bytes_rx], ecx
|
|
adc dword[ebx + device.bytes_rx + 4], 0
|
|
|
|
; copy packet data
|
|
shr cx, 1
|
|
jnc .nb
|
|
movsb
|
|
.nb:
|
|
shr cx, 1
|
|
jnc .nw
|
|
movsw
|
|
.nw:
|
|
rep movsd
|
|
|
|
mov [eax + desc.status], DES0_OWN ; free descriptor
|
|
|
|
inc [ebx + device.cur_rx] ; next descriptor
|
|
and [ebx + device.cur_rx], RX_RING_SIZE-1
|
|
|
|
jmp [Eth_input]
|
|
|
|
.end_rx:
|
|
.fail:
|
|
pop ecx esi eax
|
|
.not_rx:
|
|
|
|
pop edi esi ebx
|
|
ret
|
|
|
|
|
|
|
|
align 4
|
|
write_mac: ; in: mac pushed onto stack (as 3 words)
|
|
|
|
DEBUGF 1,"Writing MAC\n"
|
|
|
|
; write data into driver cache
|
|
mov esi, esp
|
|
lea edi, [ebx + device.mac]
|
|
movsd
|
|
movsw
|
|
add esp, 6
|
|
|
|
;; send setup packet (only if driver is started)
|
|
;; call Create_Setup_Packet
|
|
|
|
align 4
|
|
read_mac_eeprom:
|
|
|
|
DEBUGF 1,"Reading MAC from eeprom\n"
|
|
|
|
lea edi, [ebx + 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
|
|
jb .loop
|
|
|
|
DEBUGF 1,"%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
|
|
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 [ebx + device.io_addr], 0
|
|
; set_io [ebx + device.io_addr], 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
|
|
jbe .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 [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], 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 [ebx + device.io_addr], 0
|
|
; set_io [ebx + device.io_addr], 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\n", esi
|
|
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], 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 = 0x10000
|
|
MDIO_DATA_WRITE0 = 0x00000
|
|
MDIO_DATA_WRITE1 = 0x20000
|
|
MDIO_ENB = 0x00000 ; Ignore the 0x02000 databook setting.
|
|
MDIO_ENB_IN = 0x40000
|
|
MDIO_DATA_READ = 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\n", edx, esi
|
|
|
|
shl edx, 5
|
|
or esi, edx
|
|
or esi, 0xf6 shl 10
|
|
|
|
set_io [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], 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 [ebx + device.io_addr], 0
|
|
set_io [ebx + device.io_addr], 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
|
|
|
|
data fixups
|
|
end data
|
|
|
|
include '../peimport.inc'
|
|
|
|
my_service db 'DEC21X4X',0 ; max 16 chars include zero
|
|
|
|
chiplist:
|
|
; PCI id's , chip ,IO size, CSR7 , name , flags
|
|
dd 0x00021011, DC21040, 128, 0x0001ebef, sz_040, 0
|
|
dd 0x00141011, DC21041, 128, 0x0001ebef, sz_041, FLAG_HAS_MEDIA_TABLE
|
|
dd 0x00091011, DC21140, 128, 0x0001ebef, sz_140, FLAG_HAS_MII or FLAG_HAS_MEDIA_TABLE or FLAG_CSR12_IN_SROM
|
|
dd 0x00191011, DC21143, 128, 0x0001ebef, sz_143, FLAG_HAS_MII or FLAG_HAS_MEDIA_TABLE or FLAG_ALWAYS_CHECK_MII or FLAG_HAS_ACPI
|
|
dd 0x000211AD, LC82C168, 256, 0x0801fbff, sz_lite, FLAG_HAS_MII
|
|
dd 0x051210D9, MX98713, 128, 0x0001ebef, sz_m512, FLAG_HAS_MII or FLAG_HAS_MEDIA_TABLE
|
|
dd 0x053110D9, MX98715, 256, 0x0001ebef, sz_m513, FLAG_HAS_MEDIA_TABLE
|
|
dd 0x1400125B, MX98725, 128, 0x0001fbff, sz_asix, FLAG_HAS_MII or FLAG_HAS_MEDIA_TABLE or FLAG_CSR12_IN_SROM
|
|
dd 0
|
|
|
|
sz_040 db "Digital DC21040 Tulip", 0
|
|
sz_041 db "Digital DC21041 Tulip", 0
|
|
sz_140 db "Digital DS21140 Tulip", 0
|
|
sz_143 db "Digital DS21143 Tulip", 0
|
|
sz_lite db "Lite-On 82c168 PNIC", 0
|
|
sz_m512 db "Macronix 98713 PMAC", 0
|
|
sz_m513 db "Macronix 987x5 PMAC", 0
|
|
sz_asix db "ASIX AX88140", 0
|
|
|
|
include_debug_strings ; All data wich FDO uses will be included here
|
|
|
|
align 4
|
|
devices dd 0
|
|
device_list rd MAX_DEVICES ; This list contains all pointers to device structures the driver is handling |