428 lines
11 KiB
NASM
428 lines
11 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2013. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; Broadcom NetXtreme 57xx driver for KolibriOS ;;
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;; ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;; Broadcom's programmers's manual for the BCM57xx ;;
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;; http://www.broadcom.com/collateral/pg/57XX-PG105-R.pdf ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; TODO: make better use of the available descriptors
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format MS COFF
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API_VERSION = 0x01000100
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DRIVER_VERSION = 5
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MAX_DEVICES = 16
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DEBUG = 1
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__DEBUG__ = 1
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__DEBUG_LEVEL__ = 2
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include '../proc32.inc'
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include '../imports.inc'
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include '../fdo.inc'
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include '../netdrv.inc'
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public START
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public service_proc
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public version
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virtual at ebx
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device:
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ETH_DEVICE
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.mmio_addr dd ?
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.pci_bus dd ?
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.pci_dev dd ?
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.irq_line db ?
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.cur_tx dd ?
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.last_tx dd ?
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rb 0x100 - (($ - device) and 0xff)
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.rx_desc rd 256/8
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rb 0x100 - (($ - device) and 0xff)
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.tx_desc rd 256/8
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sizeof.device_struct = $ - device
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end virtual
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section '.flat' code readable align 16
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; proc START ;;
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;; ;;
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;; (standard driver proc) ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 4
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proc START stdcall, state:dword
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cmp [state], 1
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jne .exit
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.entry:
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DEBUGF 2,"Loading %s driver\n", my_service
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stdcall RegService, my_service, service_proc
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ret
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.fail:
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.exit:
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xor eax, eax
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ret
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endp
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; proc SERVICE_PROC ;;
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;; ;;
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;; (standard driver proc) ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 4
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proc service_proc stdcall, ioctl:dword
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mov edx, [ioctl]
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mov eax, [IOCTL.io_code]
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;------------------------------------------------------
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cmp eax, 0 ;SRV_GETVERSION
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jne @F
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cmp [IOCTL.out_size], 4
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jb .fail
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mov eax, [IOCTL.output]
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mov [eax], dword API_VERSION
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xor eax, eax
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ret
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;------------------------------------------------------
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@@:
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cmp eax, 1 ;SRV_HOOK
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jne .fail
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cmp [IOCTL.inp_size], 3 ; Data input must be at least 3 bytes
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jb .fail
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mov eax, [IOCTL.input]
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cmp byte [eax], 1 ; 1 means device number and bus number (pci) are given
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jne .fail ; other types arent supported for this card yet
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; check if the device is already listed
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mov esi, device_list
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mov ecx, [devices]
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test ecx, ecx
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jz .firstdevice
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; mov eax, [IOCTL.input] ; get the pci bus and device numbers
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mov ax, [eax+1] ;
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.nextdevice:
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mov ebx, [esi]
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cmp al, byte [device.pci_bus]
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jne .next
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cmp ah, byte [device.pci_dev]
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je .find_devicenum ; Device is already loaded, let's find it's device number
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.next:
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add esi, 4
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loop .nextdevice
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; This device doesnt have its own eth_device structure yet, lets create one
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.firstdevice:
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cmp [devices], MAX_DEVICES ; First check if the driver can handle one more card
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jae .fail
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allocate_and_clear ebx, sizeof.device_struct, .fail ; Allocate the buffer for device structure
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; Fill in the direct call addresses into the struct
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mov [device.reset], reset
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mov [device.transmit], transmit
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mov [device.unload], unload
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mov [device.name], my_service
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; save the pci bus and device numbers
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mov eax, [IOCTL.input]
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movzx ecx, byte [eax+1]
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mov [device.pci_bus], ecx
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movzx ecx, byte [eax+2]
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mov [device.pci_dev], ecx
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; Now, it's time to find the base mmio addres of the PCI device
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PCI_find_mmio32
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; Create virtual mapping of the physical memory
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push 1Bh ; PG_SW+PG_NOCACHE
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push 10000h ; size of the map
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push eax
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call MapIoMem
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mov [device.mmio_addr], eax
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; We've found the mmio address, find IRQ now
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PCI_find_irq
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DEBUGF 1,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\
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[device.pci_dev]:1,[device.pci_bus]:1,[device.irq_line]:1,[device.mmio_addr]:8
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; Ok, the eth_device structure is ready, let's probe the device
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call probe ; this function will output in eax
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test eax, eax
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jnz .err ; If an error occured, exit
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mov eax, [devices] ; Add the device structure to our device list
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mov [device_list+4*eax], ebx ; (IRQ handler uses this list to find device)
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inc [devices] ;
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mov [device.type], NET_TYPE_ETH
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call NetRegDev
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cmp eax, -1
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je .destroy
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ret
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; If the device was already loaded, find the device number and return it in eax
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.find_devicenum:
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DEBUGF 1,"Trying to find device number of already registered device\n"
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call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx
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; into a device number in edi
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mov eax, edi ; Application wants it in eax instead
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DEBUGF 1,"Kernel says: %u\n", eax
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ret
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; If an error occured, remove all allocated data and exit (returning -1 in eax)
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.destroy:
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; todo: reset device into virgin state
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.err:
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stdcall KernelFree, ebx
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.fail:
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or eax, -1
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ret
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;------------------------------------------------------
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endp
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;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
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;; ;;
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;; Actual Hardware dependent code starts here ;;
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;; ;;
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;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;;
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align 4
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unload:
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; TODO: (in this particular order)
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;
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; - Stop the device
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; - Detach int handler
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; - Remove device from local list (device_list)
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; - call unregister function in kernel
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; - Remove all allocated structures and buffers the card used
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or eax, -1
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ret
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;; probe: enables the device (if it really is I8254X)
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;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 4
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probe:
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DEBUGF 1,"Probe\n"
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PCI_make_bus_master
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; TODO: validate the device
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align 4
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reset:
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DEBUGF 1,"Reset\n"
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movzx eax, [device.irq_line]
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DEBUGF 1,"Attaching int handler to irq %x\n", eax:1
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stdcall AttachIntHandler, eax, int_handler, dword 0
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test eax, eax
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jnz @f
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DEBUGF 1,"\nCould not attach int handler!\n"
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; or eax, -1
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; ret
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@@:
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call read_mac
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; Set the mtu, kernel will be able to send now
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mov [device.mtu], 1514
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; Set link state to unknown
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mov [device.state], ETH_LINK_UNKOWN
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ret
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align 4
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read_mac:
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DEBUGF 1,"Read MAC\n"
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mov esi, [device.mmio_addr]
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lea edi, [device.mac]
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movsd
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movsw
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.mac_ok:
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DEBUGF 1,"MAC = %x-%x-%x-%x-%x-%x\n",\
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[device.mac+0]:2,[device.mac+1]:2,[device.mac+2]:2,[device.mac+3]:2,[device.mac+4]:2,[device.mac+5]:2
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ret
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Transmit ;;
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;; ;;
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;; In: buffer pointer in [esp+4] ;;
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;; size of buffer in [esp+8] ;;
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;; pointer to device structure in ebx ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 4
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transmit:
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DEBUGF 2,"\nTransmitting packet, buffer:%x, size:%u\n", [esp+4], [esp+8]
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mov eax, [esp+4]
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DEBUGF 2,"To: %x-%x-%x-%x-%x-%x From: %x-%x-%x-%x-%x-%x Type:%x%x\n",\
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[eax+00]:2,[eax+01]:2,[eax+02]:2,[eax+03]:2,[eax+04]:2,[eax+05]:2,\
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[eax+06]:2,[eax+07]:2,[eax+08]:2,[eax+09]:2,[eax+10]:2,[eax+11]:2,\
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[eax+13]:2,[eax+12]:2
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cmp dword [esp + 8], 1514
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ja .fail
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cmp dword [esp + 8], 60
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jb .fail
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; Update stats
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inc [device.packets_tx]
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mov eax, [esp + 8]
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add dword [device.bytes_tx], eax
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adc dword [device.bytes_tx + 4], 0
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xor eax, eax
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ret 8
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.fail:
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DEBUGF 1,"Send failed\n"
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stdcall KernelFree, [esp+4]
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or eax, -1
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ret 8
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;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Interrupt handler ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;
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align 4
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int_handler:
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push ebx esi edi
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DEBUGF 1,"\n%s int\n", my_service
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;-------------------------------------------
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; Find pointer of device wich made IRQ occur
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mov ecx, [devices]
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test ecx, ecx
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jz .nothing
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mov esi, device_list
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.nextdevice:
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mov ebx, [esi]
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; mov edi, [device.mmio_addr]
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; mov eax, [edi + REG_ICR]
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test eax, eax
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jnz .got_it
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.continue:
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add esi, 4
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dec ecx
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jnz .nextdevice
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.nothing:
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pop edi esi ebx
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xor eax, eax
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ret
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.got_it:
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DEBUGF 1,"Device: %x Status: %x ", ebx, eax
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pop edi esi ebx
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xor eax, eax
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inc eax
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ret
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; End of code
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section '.data' data readable writable align 16
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align 4
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devices dd 0
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version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF)
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my_service db 'BCM57XX',0 ; max 16 chars include zero
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include_debug_strings ; All data wich FDO uses will be included here
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device_list rd MAX_DEVICES ; This list contains all pointers to device structures the driver is handling
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