;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; 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__ = 2 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 ; 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 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 xor eax, eax ret 8 .fail: DEBUGF 1,"Send failed\n" stdcall KernelFree, [esp+4] or eax, -1 ret 8 ;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; Interrupt handler ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;; align 4 int_handler: push ebx esi edi 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: pop edi esi ebx xor eax, eax ret .got_it: DEBUGF 1,"Device: %x Status: %x ", ebx, eax pop edi esi ebx xor eax, eax inc 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