?? ethernet.inc
字號(hào):
mov [hdrtype], al
jmp sb_002
sb_001:
mov al, [hdrtype]
and al, 0x80
cmp al, 0x80
jne sb_inc_devf
sb_002:
mov edx, PCI_VENDOR_ID
call pcibios_read_config_dword
mov [vendor_device], eax
cmp eax, 0xffffffff
je sb_empty
cmp eax, 0
jne sb_check_vendor
sb_empty:
mov [hdrtype], byte 0
jmp sb_inc_devf
sb_check_vendor:
; iterate though PCICards until end or match found
mov esi, PCICards
sb_check:
cmp [esi], dword 0
je sb_inc_devf ; Quit if at last entry
cmp eax, [esi]
je sb_got_card
add esi, PCICARDS_ENTRY_SIZE
jmp sb_check
sb_got_card:
; indicate that we have found the card
mov [pci_data], eax
mov [pci_dev], ecx
mov [pci_bus], ebx
; Define the driver functions
push eax
mov eax, [esi+4]
mov [drvr_probe], eax
mov eax, [esi+8]
mov [drvr_reset], eax
mov eax, [esi+12]
mov [drvr_poll], eax
mov eax, [esi+16]
mov [drvr_transmit], eax
pop eax
mov edx, PCI_BASE_ADDRESS_0
sb_reg_check:
call pcibios_read_config_dword
mov [io_addr], eax
and eax, PCI_BASE_ADDRESS_IO_MASK
cmp eax, 0
je sb_inc_reg
mov eax, [io_addr]
and eax, PCI_BASE_ADDRESS_SPACE_IO
cmp eax, 0
je sb_inc_reg
mov eax, [io_addr]
and eax, PCI_BASE_ADDRESS_IO_MASK
mov [io_addr], eax
sb_exit1:
ret
sb_inc_reg:
add edx, 4
cmp edx, PCI_BASE_ADDRESS_5
jbe sb_reg_check
sb_inc_devf:
inc ecx
cmp ecx, 255
jb sb_devf_loop
inc ebx
cmp ebx, 256
jb sb_bus_loop
; We get here if we didn't find our card
; set io_addr to 0 as an indication
xor eax, eax
mov [io_addr], eax
sb_exit2:
ret
;***************************************************************************
;
; DEBUGGING CODE FOLLOWS
;
; If debugging data output is not required, ALL code & data below may
; be removed.
;
;***************************************************************************
if DEBUGGING_STATE = DEBUGGING_ENABLED
;***************************************************************************
; Function
; eth_dump
;
; Description
; Dumps a tx or rx ethernet packet over the rs232 link
; This is a debugging routine that seriously slows down the stack.
; Use with caution.
;
; Baud rate is 57600, 8n1 com1
; eax : type (0 == rx, 1 == tx )
; cx : # of bytes in buffer
; esi : address of buffer start
; edi : pointer to MACAddress ( tx only )
;
;***************************************************************************
eth_dump:
pusha
; Set the port to the desired speed
mov ebx, 0x3f8 ; combase
mov edx, ebx
add edx, 3 ; data format register
mov al, 0x80 ; enable access to divisor latch
out dx, al
mov edx, ebx
add edx, 1 ; interrupt enable register
mov al, 0x00 ; No interruts enabled
out dx, al
mov edx, ebx
mov al, 0x20 / 16 ; set baud rate to 57600 0x10 =115200
out dx, al
mov edx, ebx
add edx, 3 ; data format register
mov al, 0x03 ; 8 data bits
out dx, al
mov edx, ebx
add edx, 4 ; Modem control register
mov al, 0x08 ; out2 enabled. No handshaking.
out dx, al
mov edx, ebx
add edx, 1 ; interrupt enable register
mov al, 0x01 ; Receive data interrupt enabled,
out dx, al
popa
; First, display the type of the buffer.
; If it is a tx buffer, display the macaddress
pusha
cmp eax, 0
jne dd001
mov bl, 0x0a
call tx_byted
mov bl, 0x0d
call tx_byted
; Output "RX:"
mov bl, 'R'
call tx_byted
mov bl, 'X'
call tx_byted
mov bl, ':'
call tx_byted
jmp dump_data
dd001:
mov bl, 0x0a
call tx_byted
mov bl, 0x0d
call tx_byted
; Output TX: xxxxxxxxxxxx
mov bl, 'T'
call tx_byted
mov bl, 'X'
call tx_byted
mov bl, ':'
call tx_byted
mov bl, ' '
call tx_byted
; Display MAC address
xor eax, eax
mov al, [edi]
shr al, 4
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
xor eax, eax
mov al, [edi]
and al, 0x0f
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
inc edi
xor eax, eax
mov al, [edi]
shr al, 4
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
xor eax, eax
mov al, [edi]
and al, 0x0f
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
inc edi
xor eax, eax
mov al, [edi]
shr al, 4
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
xor eax, eax
mov al, [edi]
and al, 0x0f
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
inc edi
xor eax, eax
mov al, [edi]
shr al, 4
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
xor eax, eax
mov al, [edi]
and al, 0x0f
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
inc edi
xor eax, eax
mov al, [edi]
shr al, 4
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
xor eax, eax
mov al, [edi]
and al, 0x0f
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
inc edi
xor eax, eax
mov al, [edi]
shr al, 4
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
xor eax, eax
mov al, [edi]
and al, 0x0f
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
dump_data:
popa
; OK, we come in here with
; cx == number of byte to send
; esi == buffer start
;
dd_000:
mov bl, 0x0a
call tx_byted
mov bl, 0x0d
call tx_byted
mov eax, 16 ; Number of characters on the line
mov edi, esi ; Save first byte position for later
push ecx
dd_001:
push eax
; Print a byte, and a space
xor eax, eax
mov al, [esi]
shr al, 4
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
xor eax, eax
mov al, [esi]
and al, 0x0f
mov bl, [eax + hexchars]
call tx_byted ; byte in bl eax ebx edx destroyed
mov bl, ' '
call tx_byted
pop eax
inc esi
dec ecx
cmp ecx, 0
je dd_0011 ; Print the ASCII format
dec eax
cmp eax, 0
je dd_002 ; Print the ASCII format
jmp dd_001 ; Print rest of line
dd_0011:
; First, complete the 16 bytes of data, by printing spaces
dec eax
cmp eax, 0
je dd_002
push eax
mov bl, ' '
call tx_byted
mov bl, ' '
call tx_byted
mov bl, ' '
call tx_byted
pop eax
jmp dd_0011
dd_002:
pop ecx
mov esi, edi ; Go back to the start of the line data
mov eax, 16
outLineAscii:
push eax
xor eax, eax
mov al, [esi]
mov bl, '.'
cmp al, 0x1F
jle outAscii
cmp al, 0x7e
jge outAscii
mov bl, al
outAscii:
call tx_byted ; byte in bl eax ebx edx destroyed
pop eax
dec ecx
inc esi
cmp ecx, 0
je dd_003
dec eax
cmp eax, 0
je dd_003
jmp outLineAscii
dd_003:
cmp ecx, 0
je dd_004
jmp dd_000
dd_004:
ret
;***************************************************************************
; Function
; tx_byte
;
; Description
; Send a byte in bl out of the com port 1
; destroys eax, edx
;
;***************************************************************************
tx_byted:
push ebx ; Save the byte
mov ebx, 0x3f8 ; get the com port address
; Wait for transmit buffer to empty. This could take 1ms @ 9600baud
mov edx, ebx
add edx, 5
wait_txd:
in al, dx ; read uart serialisation status
and al, 0x40
cmp al, 0
jz wait_txd ; loop until free
mov edx, ebx
pop eax ; restore the byte to send
out dx, al
ret
; This is used for translating hex to ASCII for display or output
hexchars db '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
end if
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