BCM57XX Programmer's Guide manual for this purpose.
My strategy was to only use the most important registers - not the optional and many others.
But so far i cant receive anything and i really dont know whats wrong,
have i forgot some registers?
or have i give them wrong value?
very difficult questions maybe, if one not reads the manual.
however, here is the code:
Code: Select all
broadcom_net_handle:
cli
pusha
push ds
push es
push fs
push gs
mov ax, 0x10
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
;Acknowledge interrupt. Write a nonzero value (i.e., value = 1) to the interrupt mailbox 0
mov ebx, 0x145000
add ebx, 0x200 ;
mov dword [ebx], 0xffffffff
;Read and save the value of the Status Tag field of the Status Block
mov eax, [status_block + 4] ;save the status tag
push eax
mov ebx, 0x145000
add ebx, 0x280 ;Receive BD Return Ring 1 Consumer Index in mailbox
mov eax, dword [ebx]
.update:
mov ebx, [status_block+0]
cmp ebx, 0b00000000000000000000000000000001
je .action
jmp .end
.action:
;Clear the Updated bit of the status word
mov dword [status_block+0], 0x0
;Check for RX traffic.
;Loop through enabled RX Return Rings (1 to 16).
;Check for difference between RX Return Ring Producer index (Status block) and RX Return Ring Consumer index
;(value written to mailbox on previous call) are the number of frames to process for RX Return Ring.
mov ecx, [status_block+18] ;RX Return Ring Producer index (Status block)
sub ecx, eax ; ??? difference?
.loopindexrec:
;process packet!
mov eax, dword [recieve_buffer_returnring + ecx]
dec ecx
cmp ecx, 0
jnz .loopindexrec
;Compare the current value of the Status Tag to the saved value of the Status Tag
mov edx, [status_block + 4]
pop eax
push eax
cmp eax, edx
jne .equal
jmp .end
.equal:
;Update the RX Return Ring consumer pointer in each mailbox for new RX frames.
mov ebx, 0x145000
add ebx, 0x280 ;Receive BD Return Ring 1 Consumer Index in mailbox
mov eax, dword [ebx]
jmp .update ;Check the Updated bit in the status word
.end:
pop eax
;Enable interrupts
mov ebx, 0x145000
add ebx, 0x200 ;
shl eax, 24
;and eax, 0xff000000
mov dword [ebx], eax
mov al, 0x20
mov dx, 0xA0
out dx, al ;clear the irq so we can get more interupts
mov al, 0x20
mov dx, 0x20
out dx, al ;clear the irq so we can get more interupts
pop gs
pop fs
pop es
pop ds
popa
sti
iretCode: Select all
section .bss
[bits 32]
status_block: resb 80
recieve_buffer_stdring: resb 6000
recieve_buffer_returnring: resb 6000
section .text
broadcom_init:
;INITIALIZATION PROCEDURE
cli
;Set the Enable bit in the Memory Arbiter Mode register
mov edx, 0x145000
add edx, 0x4000
mov dword [edx], 0b00000000000000000000000000000010
;Enable MAC memory space decode and bus mastering
mov edx, 0x145000
add edx, 0x04
mov word [edx], 0b0000000000000110
;Set the Enable bit in the Memory Arbiter Mode register
mov edx, 0x145000
add edx, 0x4000
mov dword [edx], 0b00000000000000000000000000000010
;Enable the PCI State register and Enable the PCI Clock Control register
mov edx, 0x145000
add edx, 0x68
mov dword [edx], 0b00000000000000000000000000110000
;Initialize the Ethernet MAC Mode register
mov edx, 0x145000
add edx, 0x400
mov dword [edx], 0x00000000
;Set the default PCI Command Encoding for Read/Write Transactions
mov edx, 0x145000
add edx, 0x6c
mov dword [edx], 0b11111111001111110000000000000000
;Configure the host-based send rings
mov edx, 0x145000
add edx, 0x6800
mov dword [edx], 0b00000000000000100000000000000000
;Indicate Driver is ready to RX traffic. Set the Host_Stack_Up bit in the General Mode Control register
mov edx, 0x145000
add edx, 0x6800
mov dword [edx], 0b00000000000000010000000000000000
;Enable the buffer manager
mov edx, 0x145000
add edx, 0x4400
mov dword [edx], 0b00000000000000000000000000000110
;Enable internal hardware queues.
mov edx, 0x145000
add edx, 0x5c00
mov dword [edx], 0xffffffff
mov edx, 0x145000
add edx, 0x5c00
mov dword [edx], 0x00000000
;Initialize the Standard Receive Buffer Ring
mov edx, 0x145000
add edx, 0x2450
mov dword [edx], recieve_buffer_stdring
mov ebx, 0x145000
add ebx, 0x2458 ; Max_Length
mov eax, 0x600
shl eax, 16 ; shift 16 bits to left
mov dword [ebx], eax
mov edx, 0x145000
add edx, 0x2C18
mov dword [edx], 0
;Initialize send producer index registers in mailbox
mov edx, 0x145000
add edx, 0x380
mov dword [edx], 0x00000000
;Initialize send rings.
mov edx, 0x145000 ;NIC Ring Address = 0x4000 + (Ring_Number * sizeof(Send_Buffer_Descriptor) *NO_BDS_IN_RING) / 4
add edx, 0x100
mov eax, 0x4000
add eax, 0x400
mov dword [edx],eax ;0x4000 + ((1*32*128)/4
;Initialize Receive Return Rings. The Receive Return RCBs are located in the Miscellaneous Memory region from 0x200 to 0x2FF
mov edx, 0x145000
add edx, 0x280
mov dword [edx],recieve_buffer_returnring
mov edx, 0x145000
add edx, 0x245C
mov dword [edx], 0x00000000
;Initialize the Receive Producer Ring mailbox registers
mov ebx, 0x145000
add ebx, 0x268 ;
mov dword [ebx], 0b00000000000000000000000000000000
;Configure the Message Transfer Unit MTU size.
mov ebx, 0x145000
add ebx, 0x43C ;
mov dword [ebx], 0x05F2
;Configure IPG for transmit
mov ebx, 0x145000
add ebx, 0x464 ;
mov dword [ebx], 0x2620
;Configure default RX return ring for non-matched packets
mov ebx, 0x145000
add ebx, 0x500 ;
mov dword [ebx], 0b00000000000000000000000001000000
;Configure the number of Receive Lists.
mov ebx, 0x145000
add ebx, 0x2010 ;
mov dword [ebx], 0x181
;Enable RX statistics
mov ebx, 0x145000
add ebx, 0x2014 ;
mov dword [ebx], 0b00000000000000000000000000000001
;Disable the host coalescing engine.
mov ebx, 0x145000
add ebx, 0x3c00 ;
mov dword [ebx], 0x0000
;Configure the host coalescing tick count.
;receive
mov ebx, 0x145000
add ebx, 0x3C08 ;
mov dword [ebx], 150
;send
mov ebx, 0x145000
add ebx, 0x3c0c ;
mov dword [ebx], 150
;Configure the host coalescing BD count.
;receive
mov ebx, 0x145000
add ebx, 0x3C10 ;
mov dword [ebx], 150
;send
mov ebx, 0x145000
add ebx, 0x3c14 ;
mov dword [ebx], 150
;Configure the max-coalesced frames during interrupt counter
;receive
mov ebx, 0x145000
add ebx, 0x3C20 ;
mov dword [ebx],0
;send
mov ebx, 0x145000
add ebx, 0x3c24 ;
mov dword [ebx], 0
;Initialize host status block address
mov ebx, 0x145000
add ebx, 0x3c38 ;
mov dword [ebx], status_block
;Enable the host coalescing engine
mov ebx, 0x145000
add ebx, 0x3c00 ;
mov dword [ebx], 0b00000000000000000000000000000010
;Enable the receive BD completion functional block
mov ebx, 0x145000
add ebx, 0x3000 ;
mov dword [ebx], 0b00000000000000000000000000000110
;Enable the receive list placement functional block. Set the Enable bit in the Receive List Placement Mode register
mov ebx, 0x145000
add ebx, 0x2000 ;
mov dword [ebx], 0b00000000000000000000000000000010
;Enable and clear statistics. Enable DMA engines.
mov ebx, 0x145000
add ebx, 0x400 ;
mov dword [ebx], 0b00000000011100001101100000000000
;Configure the General Miscellaneous Local Control register
mov ebx, 0x145000
add ebx, 0x6808 ;
mov dword [ebx], 0b00000000000000000000000000001000
;Write a value of zero to the Interrupt Mailbox 0 low word for the host standard and flat modes
mov ebx, 0x145000
add bx, 0x200 ;
mov word [bx], 0x0000
;Configure the Write DMA Mode register
mov ebx, 0x145000
add ebx, 0x4c00 ;
mov dword [ebx], 0b00000000000000000000000000000010
;Configure the Read DMA Mode register
mov ebx, 0x145000
add ebx, 0x4800 ;
mov dword [ebx], 0b00000000000000000000000000000010
;Enable the receive data completion functional block
mov ebx, 0x145000
add ebx, 0x2800 ;
mov dword [ebx], 0b00000000000000000000000000000110
;Enable the send data completion functional block.
mov ebx, 0x145000
add ebx, 0x1000 ;
mov dword [ebx], 0b00000000000000000000000000000010
;Enable the send BD completion functional block
mov ebx, 0x145000
add ebx, 0x1c00 ;
mov dword [ebx], 0b00000000000000000000000000000110
;Enable the Receive BD Initiator Functional Block
mov ebx, 0x145000
add ebx, 0x2c00 ;
mov dword [ebx], 0b00000000000000000000000000000110
;Set the Enable and Illegal_Return_Ring_Size bits
mov ebx, 0x145000
add ebx, 0x2400 ;
mov dword [ebx], 0b00000000000000000000000000010010
;Enable the send data initiator functional block.
mov ebx, 0x145000
add ebx, 0x0c00 ;
mov dword [ebx], 0b00000000000000000000000000000010
;Enable the send BD initiator functional block.
mov ebx, 0x145000
add ebx, 0x1800 ;
mov dword [ebx], 0b00000000000000000000000000000110
;Enable the send BD selector functional block.
mov ebx, 0x145000
add ebx, 0x1400 ;
mov dword [ebx], 0b00000000000000000000000000000110
;Enable the transmit MAC.
mov ebx, 0x145000
add ebx, 0x45c ;
mov dword [ebx], 0b00000000000000000000000000000010
;Enable the receive MAC
mov ebx, 0x145000
add ebx, 0x468 ;
mov dword [ebx], 0b00000000000000000000000000000010
mov ebx, 0x145000
add ebx, 0x450 ;
mov dword [ebx], 0b00000000000000000000000000000010
;Setup multicast filters.
mov edx, 0x145000
add edx, 0x468
mov dword [edx], 0b00000000000000000000000100000000 ;promisc. mode
;Enable interrupts. Clear the Mask_PCI_Interrupt_Output bit in
mov edx, 0x145000
add edx, 0x68
mov dword [edx], 0b00000000000000000000000000000001
mov edx, 0x145000
add edx, 0x40c
mov dword [edx],0xffffffff
sti
ret
.