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kolibrios/kernel/branches/net/drivers/bcm57xx.asm

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Sceletone for a BCM57xx driver. Only for the brave! git-svn-id: svn://kolibrios.org@3211 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-01-31 23:00:20 +01:00
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;; Broadcom NetXtreme 57xx driver for KolibriOS ;;
;; ;;
;; ;;
;; GNU GENERAL PUBLIC LICENSE ;;
;; Version 2, June 1991 ;;
;; ;;
;; Broadcom's programmers's manual for the BCM57xx ;;
;; http://www.broadcom.com/collateral/pg/57XX-PG105-R.pdf ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; TODO: make better use of the available descriptors
format MS COFF
API_VERSION = 0x01000100
DRIVER_VERSION = 5
MAX_DEVICES = 16
DEBUG = 1
__DEBUG__ = 1
__DEBUG_LEVEL__ = 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
.mmio_addr dd ?
.pci_bus dd ?
.pci_dev dd ?
.irq_line db ?
.cur_tx dd ?
.last_tx dd ?
rb 0x100 - (($ - device) and 0xff)
.rx_desc rd 256/8
rb 0x100 - (($ - device) and 0xff)
.tx_desc rd 256/8
sizeof.device_struct = $ - device
end virtual
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 %s driver\n", my_service
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
jb .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
jb .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 al, byte [device.pci_bus]
jne .next
cmp ah, byte [device.pci_dev]
je .find_devicenum ; Device is already loaded, let's find it's device number
.next:
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_struct, .fail ; Allocate the buffer for device structure
; Fill in the direct call addresses into the struct
mov [device.reset], reset
mov [device.transmit], transmit
mov [device.unload], unload
mov [device.name], my_service
; save the pci bus and device numbers
mov eax, [IOCTL.input]
movzx ecx, byte [eax+1]
mov [device.pci_bus], ecx
movzx ecx, byte [eax+2]
mov [device.pci_dev], ecx
; Now, it's time to find the base mmio addres of the PCI device
PCI_find_mmio32
; Create virtual mapping of the physical memory
push 1Bh ; PG_SW+PG_NOCACHE
push 10000h ; size of the map
push eax
call MapIoMem
mov [device.mmio_addr], eax
; We've found the mmio address, find IRQ now
PCI_find_irq
DEBUGF 1,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\
[device.pci_dev]:1,[device.pci_bus]:1,[device.irq_line]:1,[device.mmio_addr]:8
; Ok, the eth_device structure is ready, let's probe the device
call probe ; this function will output in eax
test eax, eax
jnz .err ; If an error occured, exit
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] ;
mov [device.type], NET_TYPE_ETH
call NetRegDev
cmp eax, -1
je .destroy
ret
; If the device was already loaded, find the device number and return it in eax
.find_devicenum:
DEBUGF 1,"Trying to find device number of already registered device\n"
call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx
; into a device number in edi
mov eax, edi ; Application wants it in eax instead
DEBUGF 1,"Kernel says: %u\n", eax
ret
; If an error occured, remove all allocated data and exit (returning -1 in eax)
.destroy:
; todo: reset device into virgin state
.err:
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 (device_list)
; - call unregister function in kernel
; - Remove all allocated structures and buffers the card used
or eax, -1
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; probe: enables the device (if it really is I8254X)
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
probe:
DEBUGF 1,"Probe\n"
PCI_make_bus_master
; TODO: validate the device
align 4
reset:
DEBUGF 1,"Reset\n"
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
@@:
call read_mac
Introduced new application event for network subsystem changes (link changed, ip changed, ...) Removed get_mac and set_mac procedures from device structure, kernel does not need them. Added link state detection capabilities for kernel and some drivers. git-svn-id: svn://kolibrios.org@3346 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-03-07 10:35:24 +01:00
; Set the mtu, kernel will be able to send now
mov [device.mtu], 1514
; Set link state to unknown
mov [device.state], ETH_LINK_UNKOWN
Sceletone for a BCM57xx driver. Only for the brave! git-svn-id: svn://kolibrios.org@3211 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-01-31 23:00:20 +01:00
ret
align 4
read_mac:
DEBUGF 1,"Read MAC\n"
mov esi, [device.mmio_addr]
lea edi, [device.mac]
movsd
movsw
.mac_ok:
DEBUGF 1,"MAC = %x-%x-%x-%x-%x-%x\n",\
[device.mac+0]:2,[device.mac+1]:2,[device.mac+2]:2,[device.mac+3]:2,[device.mac+4]:2,[device.mac+5]:2
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Transmit ;;
;; ;;
;; In: buffer pointer in [esp+4] ;;
;; size of buffer in [esp+8] ;;
;; pointer to device structure in ebx ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
transmit:
DEBUGF 2,"\nTransmitting packet, buffer:%x, size:%u\n", [esp+4], [esp+8]
mov eax, [esp+4]
DEBUGF 2,"To: %x-%x-%x-%x-%x-%x From: %x-%x-%x-%x-%x-%x Type:%x%x\n",\
[eax+00]:2,[eax+01]:2,[eax+02]:2,[eax+03]:2,[eax+04]:2,[eax+05]:2,\
[eax+06]:2,[eax+07]:2,[eax+08]:2,[eax+09]:2,[eax+10]:2,[eax+11]:2,\
[eax+13]:2,[eax+12]:2
cmp dword [esp + 8], 1514
ja .fail
cmp dword [esp + 8], 60
jb .fail
; Update stats
inc [device.packets_tx]
mov eax, [esp + 8]
add dword [device.bytes_tx], eax
adc dword [device.bytes_tx + 4], 0
ret 8
.fail:
DEBUGF 1,"Send failed\n"
ret 8
;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Interrupt handler ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;
align 4
int_handler:
DEBUGF 1,"\n%s int\n", my_service
;-------------------------------------------
; Find pointer of device wich made IRQ occur
mov ecx, [devices]
test ecx, ecx
jz .nothing
mov esi, device_list
.nextdevice:
mov ebx, [esi]
; mov edi, [device.mmio_addr]
; mov eax, [edi + REG_ICR]
test eax, eax
jnz .got_it
.continue:
add esi, 4
dec ecx
jnz .nextdevice
.nothing:
ret
.got_it:
DEBUGF 1,"Device: %x Status: %x ", ebx, eax
ret
; End of code
section '.data' data readable writable align 16
align 4
devices dd 0
version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF)
my_service db 'BCM57XX',0 ; max 16 chars include zero
include_debug_strings ; All data wich FDO uses will be included here
device_list rd MAX_DEVICES ; This list contains all pointers to device structures the driver is handling
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