438 lines
12 KiB
NASM
438 lines
12 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2021. 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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;; 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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format PE DLL native
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entry START
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CURRENT_API = 0x0200
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COMPATIBLE_API = 0x0100
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API_VERSION = (COMPATIBLE_API shl 16) + CURRENT_API
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; configureable area
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MAX_DEVICES = 16
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__DEBUG__ = 1
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__DEBUG_LEVEL__ = 2
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TX_RING_SIZE = 128 ; Number of packets in send ring buffer
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RX_RING_SIZE = 128 ; Number of packets in receive ring buffer
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; end configureable area
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section '.flat' readable writable executable
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include '../proc32.inc'
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include '../struct.inc'
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include '../macros.inc'
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include '../fdo.inc'
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include '../netdrv.inc'
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if (bsr TX_RING_SIZE)>(bsf TX_RING_SIZE)
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display 'TX_RING_SIZE must be a power of two'
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err
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end if
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if (bsr RX_RING_SIZE)>(bsf RX_RING_SIZE)
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display 'RX_RING_SIZE must be a power of two'
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err
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end if
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struct device 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 - ($ and 0xff) ; align 256
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rx_desc rd 256/8
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rb 0x100 - ($ and 0xff) ; align 256
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tx_desc rd 256/8
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ends
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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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proc START c, reason:dword, cmdline:dword
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cmp [reason], DRV_ENTRY
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jne .fail
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DEBUGF 1,"Loading driver\n"
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invoke RegService, my_service, service_proc
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ret
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.fail:
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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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proc service_proc stdcall, ioctl:dword
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mov edx, [ioctl]
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mov eax, [edx + 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 [edx + IOCTL.out_size], 4
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jb .fail
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mov eax, [edx + 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 [edx + IOCTL.inp_size], 3 ; Data input must be at least 3 bytes
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jb .fail
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mov eax, [edx + 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, [edx + 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 [ebx + device.pci_bus]
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jne .next
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cmp ah, byte [ebx + 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, .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 [ebx + device.reset], reset
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mov [ebx + device.transmit], transmit
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mov [ebx + device.unload], unload
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mov [ebx + device.name], my_service
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; save the pci bus and device numbers
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mov eax, [edx + IOCTL.input]
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movzx ecx, byte [eax+1]
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mov [ebx + device.pci_bus], ecx
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movzx ecx, byte [eax+2]
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mov [ebx + 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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stdcall PCI_find_mmio, [ebx + device.pci_bus], [ebx + device.pci_dev]
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test eax, eax
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jz .destroy
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; Create virtual mapping of the physical memory
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invoke MapIoMem, eax, 10000h, PG_SW+PG_NOCACHE
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mov [ebx + device.mmio_addr], eax
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; We've found the mmio address, find IRQ now
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invoke PciRead8, [ebx + device.pci_bus], [ebx + device.pci_dev], PCI_header00.interrupt_line
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mov [ebx + device.irq_line], al
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DEBUGF 1,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\
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[ebx + device.pci_dev]:1,[ebx + device.pci_bus]:1,[ebx + device.irq_line]:1,[ebx + 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 [ebx + device.type], NET_TYPE_ETH
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invoke 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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invoke 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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invoke 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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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 BCM57XX)
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;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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probe:
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DEBUGF 1,"Probe\n"
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; Make the device a bus master
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invoke PciRead32, [ebx + device.pci_bus], [ebx + device.pci_dev], PCI_header00.command
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or al, PCI_CMD_MASTER + PCI_CMD_MMIO + PCI_CMD_PIO
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invoke PciWrite32, [ebx + device.pci_bus], [ebx + device.pci_dev], PCI_header00.command, eax
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; TODO: validate the device
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reset:
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DEBUGF 1,"Reset\n"
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movzx eax, [ebx + device.irq_line]
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DEBUGF 1,"Attaching int handler to irq %x\n", eax:1
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invoke AttachIntHandler, eax, int_handler, ebx
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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 [ebx + device.mtu], 1514
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; Set link state to unknown
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mov [ebx + device.state], ETH_LINK_UNKNOWN
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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, [ebx + device.mmio_addr]
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lea edi, [ebx + 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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[ebx + device.mac+0]:2,[ebx + device.mac+1]:2,[ebx + device.mac+2]:2,[ebx + device.mac+3]:2,[ebx + device.mac+4]:2,[ebx + 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: pointer to device structure in ebx ;;
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;; Out: eax = 0 on success ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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align 16
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proc transmit stdcall bufferptr, buffersize
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spin_lock_irqsave
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DEBUGF 1,"Transmitting packet, buffer:%x, size:%u\n", [bufferptr], [buffersize]
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mov eax, [bufferptr]
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DEBUGF 1,"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 [buffersize], 1514
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ja .error
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cmp [buffersize], 60
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jb .error
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; Program the descriptor
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; test [something], STILL_BUSY?
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; jnz .overrun
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; TODO: Program the descriptor
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; Update stats
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inc [ebx + device.packets_tx]
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mov eax, [buffersize]
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add dword[ebx + device.bytes_tx], eax
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adc dword[ebx + device.bytes_tx + 4], 0
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DEBUGF 1,"Transmit OK\n"
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spin_unlock_irqrestore
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xor eax, eax
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ret
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.error:
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DEBUGF 2, "TX packet error\n"
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inc [ebx + device.packets_tx_err]
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invoke NetFree, [bufferptr]
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spin_unlock_irqrestore
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or eax, -1
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ret
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.overrun:
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DEBUGF 2, "TX overrun\n"
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inc [ebx + device.packets_tx_ovr]
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invoke NetFree, [bufferptr]
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spin_unlock_irqrestore
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or eax, -1
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ret
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endp
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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 16
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int_handler:
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push ebx esi edi
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mov ebx, [esp+4*4]
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DEBUGF 1,"INT for 0x%x\n", ebx
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; TODO? if we are paranoid, we can check that the value from ebx is present in the current device_list
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mov edi, [ebx + device.mmio_addr]
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; mov eax, [edi + REG_ICR]
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test eax, eax
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jz .nothing
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DEBUGF 1,"Status: %x ", eax
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; TODO: handle interrupts
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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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.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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; End of code
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data fixups
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end data
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include '../peimport.inc'
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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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align 4
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devices dd 0
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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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