1156 lines
31 KiB
NASM
1156 lines
31 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2014. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; R6040 driver for KolibriOS ;;
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;; ;;
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;; based on R6040.c from linux ;;
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;; ;;
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;; Written by Asper (asper.85@mail.ru) ;;
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;; and hidnplayr (hidnplayr@gmail.com) ;;
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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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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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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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W_MAX_TIMEOUT = 0x0FFF ; max time out delay time
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TX_TIMEOUT = 6000 ; Time before concluding the transmitter is hung, in ms
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TX_RING_SIZE = 4 ; RING sizes must be a power of 2
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RX_RING_SIZE = 4
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RX_BUF_LEN_IDX = 3 ; 0==8K, 1==16K, 2==32K, 3==64K
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; Threshold is bytes transferred to chip before transmission starts.
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TX_FIFO_THRESH = 256 ; In bytes, rounded down to 32 byte units.
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; The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024.
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RX_FIFO_THRESH = 4 ; Rx buffer level before first PCI xfer.
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RX_DMA_BURST = 4 ; Maximum PCI burst, '4' is 256 bytes
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TX_DMA_BURST = 4
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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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; Operational parameters that usually are not changed.
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PHY1_ADDR = 1 ; For MAC1
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PHY2_ADDR = 3 ; For MAC2
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PHY_MODE = 0x3100 ; PHY CHIP Register 0
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PHY_CAP = 0x01E1 ; PHY CHIP Register 4
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;**************************************************************************
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; RDC R6040 Register Definitions
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;**************************************************************************
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MCR0 = 0x00 ; Control register 0
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MCR0_RCVEN = 0x0002 ; Receive enable
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MCR0_PROMISC = 0x0020 ; Promiscuous mode
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MCR0_HASH_EN = 0x0100 ; Enable multicast hash table function
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MCR0_XMTEN = 0x1000 ; Transmission enable
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MCR0_FD = 0x8000 ; Full/Half Duplex mode
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MCR1 = 0x01 ; Control register 1
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MAC_RST = 0x0001 ; Reset the MAC
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MBCR = 0x08 ; Bus control
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MT_ICR = 0x0C ; TX interrupt control
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MR_ICR = 0x10 ; RX interrupt control
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MTPR = 0x14 ; TX poll command register
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MR_BSR = 0x18 ; RX buffer size
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MR_DCR = 0x1A ; RX descriptor control
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MLSR = 0x1C ; Last status
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MMDIO = 0x20 ; MDIO control register
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MDIO_WRITE = 0x4000 ; MDIO write
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MDIO_READ = 0x2000 ; MDIO read
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MMRD = 0x24 ; MDIO read data register
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MMWD = 0x28 ; MDIO write data register
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MTD_SA0 = 0x2C ; TX descriptor start address 0
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MTD_SA1 = 0x30 ; TX descriptor start address 1
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MRD_SA0 = 0x34 ; RX descriptor start address 0
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MRD_SA1 = 0x38 ; RX descriptor start address 1
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MISR = 0x3C ; Status register
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MIER = 0x40 ; INT enable register
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MSK_INT = 0x0000 ; Mask off interrupts
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RX_FINISH = 0x0001 ; RX finished
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RX_NO_DESC = 0x0002 ; No RX descriptor available
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RX_FIFO_FULL = 0x0004 ; RX FIFO full
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RX_EARLY = 0x0008 ; RX early
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TX_FINISH = 0x0010 ; TX finished
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TX_EARLY = 0x0080 ; TX early
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EVENT_OVRFL = 0x0100 ; Event counter overflow
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LINK_CHANGED = 0x0200 ; PHY link changed
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ME_CISR = 0x44 ; Event counter INT status
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ME_CIER = 0x48 ; Event counter INT enable
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MR_CNT = 0x50 ; Successfully received packet counter
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ME_CNT0 = 0x52 ; Event counter 0
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ME_CNT1 = 0x54 ; Event counter 1
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ME_CNT2 = 0x56 ; Event counter 2
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ME_CNT3 = 0x58 ; Event counter 3
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MT_CNT = 0x5A ; Successfully transmit packet counter
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ME_CNT4 = 0x5C ; Event counter 4
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MP_CNT = 0x5E ; Pause frame counter register
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MAR0 = 0x60 ; Hash table 0
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MAR1 = 0x62 ; Hash table 1
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MAR2 = 0x64 ; Hash table 2
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MAR3 = 0x66 ; Hash table 3
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MID_0L = 0x68 ; Multicast address MID0 Low
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MID_0M = 0x6A ; Multicast address MID0 Medium
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MID_0H = 0x6C ; Multicast address MID0 High
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MID_1L = 0x70 ; MID1 Low
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MID_1M = 0x72 ; MID1 Medium
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MID_1H = 0x74 ; MID1 High
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MID_2L = 0x78 ; MID2 Low
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MID_2M = 0x7A ; MID2 Medium
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MID_2H = 0x7C ; MID2 High
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MID_3L = 0x80 ; MID3 Low
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MID_3M = 0x82 ; MID3 Medium
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MID_3H = 0x84 ; MID3 High
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PHY_CC = 0x88 ; PHY status change configuration register
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PHY_ST = 0x8A ; PHY status register
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MAC_SM = 0xAC ; MAC status machine
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MAC_ID = 0xBE ; Identifier register
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MAX_BUF_SIZE = 0x600 ; 1536
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MBCR_DEFAULT = 0x012A ; MAC Bus Control Register
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MCAST_MAX = 3 ; Max number multicast addresses to filter
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;Descriptor status
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DSC_OWNER_MAC = 0x8000 ; MAC is the owner of this descriptor
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DSC_RX_OK = 0x4000 ; RX was successfull
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DSC_RX_ERR = 0x0800 ; RX PHY error
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DSC_RX_ERR_DRI = 0x0400 ; RX dribble packet
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DSC_RX_ERR_BUF = 0x0200 ; RX length exceeds buffer size
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DSC_RX_ERR_LONG = 0x0100 ; RX length > maximum packet length
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DSC_RX_ERR_RUNT = 0x0080 ; RX packet length < 64 byte
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DSC_RX_ERR_CRC = 0x0040 ; RX CRC error
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DSC_RX_BCAST = 0x0020 ; RX broadcast (no error)
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DSC_RX_MCAST = 0x0010 ; RX multicast (no error)
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DSC_RX_MCH_HIT = 0x0008 ; RX multicast hit in hash table (no error)
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DSC_RX_MIDH_HIT = 0x0004 ; RX MID table hit (no error)
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DSC_RX_IDX_MID_MASK = 3 ; RX mask for the index of matched MIDx
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;PHY settings
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ICPLUS_PHY_ID = 0x0243
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RX_INTS = RX_FIFO_FULL or RX_NO_DESC or RX_FINISH
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TX_INTS = TX_FINISH
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INT_MASK = RX_INTS or TX_INTS
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RX_BUF_LEN equ (8192 << RX_BUF_LEN_IDX) ; Size of the in-memory receive ring.
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IO_SIZE = 256 ; RDC MAC I/O Size
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MAX_MAC = 2 ; MAX RDC MAC
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virtual at 0
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x_head:
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.status dw ? ;0-1
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.len dw ? ;2-3
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.buf dd ? ;4-7
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.ndesc dd ? ;8-B
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.rev1 dd ? ;C-F
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.vbufp dd ? ;10-13
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.vndescp dd ? ;14-17
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.skb_ptr dd ? ;18-1B
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.rev2 dd ? ;1C-1F
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.sizeof:
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end virtual
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virtual at ebx
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device:
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ETH_DEVICE
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.io_addr dd ?
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.cur_rx dw ?
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.cur_tx dw ?
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.last_tx dw ?
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.phy_addr dd ?
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.phy_mode dw ?
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.mcr0 dw ?
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.mcr1 dw ?
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.switch_sig dw ?
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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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rb 1 ; dword alignment
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.tx_ring: rb (((x_head.sizeof*TX_RING_SIZE)+32) and 0xfffffff0)
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.rx_ring: rb (((x_head.sizeof*RX_RING_SIZE)+32) and 0xfffffff0)
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.size = $ - 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 driver\n"
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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 @f
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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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@@:
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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, device.size, .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 io addres of the PCI device
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PCI_find_io
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; We've found the io 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.io_addr]:4
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; Ok, the eth_device structure is ready, let's probe the device
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cli
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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_sti ; 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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sti
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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_sti:
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sti
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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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;mdio_read:
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; stdcall phy_read, [device.io_addr], [device.phy_addr], ecx
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; ret
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;mdio_write:
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; stdcall phy_write, [device.io_addr], [device.phy_addr], ecx, eax
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; ret
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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 (RTL8139_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 R6040)
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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,"Probing R6040 device\n"
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PCI_make_bus_master
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; If PHY status change register is still set to zero
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; it means the bootloader didn't initialize it
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set_io 0
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set_io PHY_CC
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in ax, dx
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test ax, ax
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jnz @f
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mov ax, 0x9F07
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out dx, ax
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@@:
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call read_mac
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|
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; Some bootloaders/BIOSes do not initialize MAC address, warn about that
|
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and eax, 0xFF
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or eax, dword [device.mac]
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test eax, eax
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jnz @f
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DEBUGF 2, "MAC address not initialized!\n"
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@@:
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; Init RDC private data
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mov [device.mcr0], MCR0_XMTEN or MCR0_RCVEN
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mov [device.phy_addr], PHY1_ADDR
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mov [device.switch_sig], 0
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; Check the vendor ID on the PHY, if 0xFFFF assume none attached
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stdcall phy_read, [device.phy_addr], 2
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cmp ax, 0xFFFF
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jne @f
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DEBUGF 2, "Failed to detect an attached PHY!\n"
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mov eax, -1
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ret
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@@:
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; Set MAC address
|
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call init_mac_regs
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|
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; Initialize and alloc RX/TX buffers
|
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call init_txbufs
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call init_rxbufs
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|
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; Read the PHY ID
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mov [device.phy_mode], MCR0_FD
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stdcall phy_read, 0, 2
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mov [device.switch_sig], ax
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cmp ax, ICPLUS_PHY_ID
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jne @f
|
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stdcall phy_write, 29, 31, 0x175C ; Enable registers
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jmp .phy_readen
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@@:
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|
|
; PHY Mode Check
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stdcall phy_write, [device.phy_addr], 4, PHY_CAP
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stdcall phy_write, [device.phy_addr], 0, PHY_MODE
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|
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if PHY_MODE = 0x3100
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call phy_mode_chk
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mov [device.phy_mode], ax
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jmp .phy_readen
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end if
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|
|
if not (PHY_MODE and 0x0100)
|
|
mov [device.phy_mode], 0
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|
end if
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|
|
|
.phy_readen:
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|
|
|
; Set duplex mode
|
|
mov ax, [device.phy_mode]
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or [device.mcr0], ax
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|
|
; improve performance (by RDC guys)
|
|
stdcall phy_read, 30, 17
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or ax, 0x4000
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stdcall phy_write, 30, 17, eax
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|
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stdcall phy_read, 30, 17
|
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and ax, not 0x2000
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stdcall phy_write, 30, 17, eax
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|
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stdcall phy_write, 0, 19, 0x0000
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stdcall phy_write, 0, 30, 0x01F0
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|
|
|
; Initialize all Mac registers
|
|
call init_mac_regs
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|
|
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|
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align 4
|
|
reset:
|
|
|
|
DEBUGF 1,"Resetting R6040\n"
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|
|
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; Mask off Interrupt
|
|
xor ax, ax
|
|
set_io 0
|
|
set_io MIER
|
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out dx, ax
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|
|
; attach int handler
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|
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movzx eax, [device.irq_line]
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DEBUGF 1,"Attaching int handler to irq %x\n", eax:1
|
|
stdcall AttachIntHandler, eax, int_handler, dword 0
|
|
test eax, eax
|
|
jnz @f
|
|
DEBUGF 2,"Could not attach int handler!\n"
|
|
; or eax, -1
|
|
; ret
|
|
@@:
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|
|
|
|
|
;Reset RDC MAC
|
|
mov eax, MAC_RST
|
|
set_io 0
|
|
set_io MCR1
|
|
out dx, ax
|
|
|
|
mov ecx, 2048 ;limit
|
|
.read:
|
|
in ax, dx
|
|
test ax, 0x1
|
|
jnz @f
|
|
dec ecx
|
|
test ecx, ecx
|
|
jnz .read
|
|
@@:
|
|
;Reset internal state machine
|
|
mov ax, 2
|
|
set_io MAC_SM
|
|
out dx, ax
|
|
|
|
xor ax, ax
|
|
out dx, ax
|
|
|
|
mov esi, 5
|
|
stdcall Sleep
|
|
|
|
;MAC Bus Control Register
|
|
mov ax, MBCR_DEFAULT
|
|
set_io 0
|
|
set_io MBCR
|
|
out dx, ax
|
|
|
|
;Buffer Size Register
|
|
mov ax, MAX_BUF_SIZE
|
|
set_io MR_BSR
|
|
out dx, ax
|
|
|
|
;Write TX ring start address
|
|
lea eax, [device.tx_ring]
|
|
GetRealAddr
|
|
set_io MTD_SA0
|
|
out dx, ax
|
|
shr eax, 16
|
|
set_io MTD_SA1
|
|
out dx, ax
|
|
|
|
;Write RX ring start address
|
|
lea eax, [device.rx_ring]
|
|
GetRealAddr
|
|
set_io MRD_SA0
|
|
out dx, ax
|
|
shr eax, 16
|
|
set_io MRD_SA1
|
|
out dx, ax
|
|
|
|
;Set interrupt waiting time and packet numbers
|
|
xor ax, ax
|
|
set_io MT_ICR
|
|
out dx, ax
|
|
|
|
;Enable interrupts
|
|
mov ax, INT_MASK
|
|
set_io MIER
|
|
out dx, ax
|
|
|
|
;Enable RX
|
|
mov ax, [device.mcr0]
|
|
or ax, MCR0_RCVEN
|
|
set_io 0
|
|
out dx, ax
|
|
|
|
;Let TX poll the descriptors
|
|
;we may got called by tx_timeout which has left
|
|
;some unset tx buffers
|
|
xor ax, ax
|
|
inc ax
|
|
set_io 0
|
|
set_io MTPR
|
|
out dx, ax
|
|
|
|
; 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
|
|
|
|
DEBUGF 1,"Reset ok\n"
|
|
xor eax, eax
|
|
ret
|
|
|
|
|
|
|
|
align 4
|
|
init_txbufs:
|
|
|
|
DEBUGF 1,"Init TxBufs\n"
|
|
|
|
lea esi, [device.tx_ring]
|
|
lea eax, [device.tx_ring + x_head.sizeof]
|
|
GetRealAddr
|
|
mov ecx, TX_RING_SIZE
|
|
|
|
.next_desc:
|
|
mov [esi + x_head.ndesc], eax
|
|
mov [esi + x_head.skb_ptr], 0
|
|
mov [esi + x_head.status], DSC_OWNER_MAC
|
|
|
|
add eax, x_head.sizeof
|
|
add esi, x_head.sizeof
|
|
|
|
dec ecx
|
|
jnz .next_desc
|
|
|
|
lea eax, [device.tx_ring]
|
|
GetRealAddr
|
|
mov [device.tx_ring + x_head.sizeof*(TX_RING_SIZE - 1) + x_head.ndesc], eax
|
|
|
|
ret
|
|
|
|
|
|
|
|
align 4
|
|
init_rxbufs:
|
|
|
|
DEBUGF 1,"Init RxBufs\n"
|
|
|
|
lea esi, [device.rx_ring]
|
|
lea eax, [device.rx_ring + x_head.sizeof]
|
|
GetRealAddr
|
|
mov edx, eax
|
|
mov ecx, RX_RING_SIZE
|
|
|
|
.next_desc:
|
|
mov [esi + x_head.ndesc], edx
|
|
|
|
push esi ecx edx
|
|
stdcall KernelAlloc, MAX_BUF_SIZE
|
|
pop edx ecx esi
|
|
|
|
mov [esi + x_head.skb_ptr], eax
|
|
GetRealAddr
|
|
mov [esi + x_head.buf], eax
|
|
mov [esi + x_head.status], DSC_OWNER_MAC
|
|
|
|
add edx, x_head.sizeof
|
|
add esi, x_head.sizeof
|
|
|
|
dec ecx
|
|
jnz .next_desc
|
|
|
|
; complete the ring by linking the last to the first
|
|
lea eax, [device.rx_ring]
|
|
GetRealAddr
|
|
mov [device.rx_ring + x_head.sizeof*(RX_RING_SIZE - 1) + x_head.ndesc], eax
|
|
|
|
ret
|
|
|
|
|
|
|
|
align 4
|
|
phy_mode_chk:
|
|
|
|
DEBUGF 1,"Checking PHY mode\n"
|
|
|
|
; PHY Link Status Check
|
|
stdcall phy_read, [device.phy_addr], MII_BMSR
|
|
test ax, BMSR_LSTATUS
|
|
jz .ret_0x8000
|
|
|
|
; PHY Chip Auto-Negotiation Status
|
|
test ax, BMSR_ANEGCOMPLETE
|
|
jnz .auto_nego
|
|
|
|
; Force Mode
|
|
stdcall phy_read, [device.phy_addr], MII_BMCR
|
|
test ax, BMCR_FULLDPLX
|
|
jnz .ret_0x8000
|
|
|
|
.auto_nego:
|
|
; Auto Negotiation Mode
|
|
stdcall phy_read, [device.phy_addr], MII_LPA
|
|
mov cx, ax
|
|
stdcall phy_read, [device.phy_addr], MII_ADVERTISE
|
|
and ax, cx
|
|
test ax, ADVERTISE_10FULL + ADVERTISE_100FULL
|
|
jnz .ret_0x8000
|
|
|
|
xor eax, eax
|
|
ret
|
|
|
|
.ret_0x8000:
|
|
mov eax, 0x8000
|
|
ret
|
|
|
|
|
|
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Transmit ;;
|
|
;; ;;
|
|
;; In: buffer pointer in [esp+4] ;;
|
|
;; size of buffer in [esp+8] ;;
|
|
;; pointer to device structure in ebx ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
align 4
|
|
transmit:
|
|
DEBUGF 1,"Transmitting packet, buffer:%x, size:%u\n", [esp+4], [esp+8]
|
|
mov eax, [esp+4]
|
|
DEBUGF 1,"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
|
|
|
|
movzx edi, [device.cur_tx]
|
|
shl edi, 5
|
|
add edi, ebx
|
|
add edi, device.tx_ring - ebx
|
|
|
|
DEBUGF 1,"TX buffer status: 0x%x\n", [edi + x_head.status]:4
|
|
|
|
test [edi + x_head.status], DSC_OWNER_MAC ; check if buffer is available
|
|
jnz .wait_to_send
|
|
|
|
.do_send:
|
|
DEBUGF 1,"Sending now\n"
|
|
|
|
mov eax, [esp+4]
|
|
mov [edi + x_head.skb_ptr], eax
|
|
GetRealAddr
|
|
mov [edi + x_head.buf], eax
|
|
mov ecx, [esp+8]
|
|
mov [edi + x_head.len], cx
|
|
mov [edi + x_head.status], DSC_OWNER_MAC
|
|
|
|
; Trigger the MAC to check the TX descriptor
|
|
mov ax, 0x01
|
|
set_io 0
|
|
set_io MTPR
|
|
out dx, ax
|
|
|
|
inc [device.cur_tx]
|
|
and [device.cur_tx], TX_RING_SIZE - 1
|
|
|
|
; 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
|
|
|
|
.wait_to_send:
|
|
|
|
DEBUGF 1,"Waiting for TX buffer\n"
|
|
|
|
call GetTimerTicks ; returns in eax
|
|
lea edx, [eax + 100]
|
|
.l2:
|
|
test [edi + x_head.status], DSC_OWNER_MAC
|
|
jz .do_send
|
|
mov esi, 10
|
|
call Sleep
|
|
call GetTimerTicks
|
|
cmp edx, eax
|
|
jb .l2
|
|
|
|
DEBUGF 2,"Send timeout\n"
|
|
xor eax, eax
|
|
dec eax
|
|
.fail:
|
|
DEBUGF 2,"Send failed\n"
|
|
stdcall KernelFree, [esp+4]
|
|
or eax, -1
|
|
ret 8
|
|
|
|
|
|
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Interrupt handler ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
align 4
|
|
int_handler:
|
|
|
|
push ebx esi edi
|
|
|
|
DEBUGF 1,"int\n"
|
|
|
|
; Find pointer of device wich made IRQ occur
|
|
|
|
mov ecx, [devices]
|
|
test ecx, ecx
|
|
jz .nothing
|
|
mov esi, device_list
|
|
.nextdevice:
|
|
mov ebx, [esi]
|
|
|
|
set_io 0
|
|
set_io MISR
|
|
in ax, dx
|
|
out dx, ax ; send it back to ACK
|
|
test ax, ax
|
|
jnz .got_it
|
|
.continue:
|
|
add esi, 4
|
|
dec ecx
|
|
jnz .nextdevice
|
|
.nothing:
|
|
pop edi esi ebx
|
|
xor eax, eax
|
|
|
|
ret ; If no device was found, abort (The irq was probably for a device, not registered to this driver)
|
|
|
|
|
|
; At this point, test for all possible reasons, and handle accordingly
|
|
|
|
.got_it:
|
|
|
|
DEBUGF 1,"Device: %x Status: %x\n", ebx, ax
|
|
|
|
push ax
|
|
|
|
test word[esp], RX_FINISH
|
|
jz .no_RX
|
|
|
|
push ebx
|
|
.more_RX:
|
|
pop ebx
|
|
|
|
; Find the current RX descriptor
|
|
movzx edx, [device.cur_rx]
|
|
shl edx, 5
|
|
lea edx, [device.rx_ring + edx]
|
|
|
|
; Check the descriptor status
|
|
mov cx, [edx + x_head.status]
|
|
test cx, DSC_OWNER_MAC
|
|
jnz .no_RX
|
|
|
|
DEBUGF 1,"packet status=0x%x\n", cx
|
|
|
|
test cx, DSC_RX_ERR ; Global error status set
|
|
jnz .no_RX
|
|
|
|
; Packet successfully received
|
|
movzx ecx, [edx + x_head.len]
|
|
and ecx, 0xFFF
|
|
sub ecx, 4 ; Do not count the CRC
|
|
|
|
; Update stats
|
|
add dword[device.bytes_rx], ecx
|
|
adc dword[device.bytes_rx + 4], 0
|
|
inc dword[device.packets_rx]
|
|
|
|
; Push packet size and pointer, kernel will need it..
|
|
push ebx
|
|
push .more_RX
|
|
|
|
push ecx
|
|
push [edx + x_head.skb_ptr]
|
|
|
|
DEBUGF 1,"packet ptr=0x%x\n", [edx + x_head.skb_ptr]
|
|
|
|
; reset the RX descriptor
|
|
push edx
|
|
stdcall KernelAlloc, MAX_BUF_SIZE
|
|
pop edx
|
|
mov [edx + x_head.skb_ptr], eax
|
|
GetRealAddr
|
|
mov [edx + x_head.buf], eax
|
|
mov [edx + x_head.status], DSC_OWNER_MAC
|
|
|
|
; Use next descriptor next time
|
|
inc [device.cur_rx]
|
|
and [device.cur_rx], RX_RING_SIZE - 1
|
|
|
|
; At last, send packet to kernel
|
|
jmp Eth_input
|
|
|
|
|
|
.no_RX:
|
|
|
|
test word[esp], TX_FINISH
|
|
jz .no_TX
|
|
|
|
.loop_tx:
|
|
movzx edi, [device.last_tx]
|
|
shl edi, 5
|
|
lea edi, [device.tx_ring + edi]
|
|
|
|
test [edi + x_head.status], DSC_OWNER_MAC
|
|
jnz .no_TX
|
|
|
|
cmp [edi + x_head.skb_ptr], 0
|
|
je .no_TX
|
|
|
|
DEBUGF 1,"Freeing buffer 0x%x\n", [edi + x_head.skb_ptr]
|
|
|
|
push [edi + x_head.skb_ptr]
|
|
mov [edi + x_head.skb_ptr], 0
|
|
call KernelFree
|
|
|
|
inc [device.last_tx]
|
|
and [device.last_tx], TX_RING_SIZE - 1
|
|
|
|
jmp .loop_tx
|
|
|
|
.no_TX:
|
|
test word[esp], RX_NO_DESC
|
|
jz .no_rxdesc
|
|
|
|
DEBUGF 2, "No more RX descriptors!\n"
|
|
|
|
.no_rxdesc:
|
|
test word[esp], RX_FIFO_FULL
|
|
jz .no_rxfifo
|
|
|
|
DEBUGF 2, "RX FIFO full!\n"
|
|
|
|
.no_rxfifo:
|
|
test word[esp], RX_EARLY
|
|
jz .no_rxearly
|
|
|
|
DEBUGF 2, "RX early\n"
|
|
|
|
.no_rxearly:
|
|
test word[esp], TX_EARLY
|
|
jz .no_txearly
|
|
|
|
DEBUGF 2, "TX early\n"
|
|
|
|
.no_txearly:
|
|
test word[esp], EVENT_OVRFL
|
|
jz .no_ovrfl
|
|
|
|
DEBUGF 2, "Event counter overflow!\n"
|
|
|
|
.no_ovrfl:
|
|
test word[esp], LINK_CHANGED
|
|
jz .no_link
|
|
|
|
DEBUGF 2, "Link changed\n"
|
|
|
|
.no_link:
|
|
pop ax
|
|
|
|
pop edi esi ebx
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
align 4
|
|
init_mac_regs:
|
|
|
|
DEBUGF 1,"initializing MAC regs\n"
|
|
|
|
; MAC operation register
|
|
mov ax, 1
|
|
set_io 0
|
|
set_io MCR1
|
|
out dx, ax
|
|
; Reset MAC
|
|
mov ax, 2
|
|
set_io MAC_SM
|
|
out dx, ax
|
|
; Reset internal state machine
|
|
xor ax, ax
|
|
out dx, ax
|
|
mov esi, 5
|
|
stdcall Sleep
|
|
|
|
call read_mac
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
; Read a word data from PHY Chip
|
|
|
|
align 4
|
|
proc phy_read stdcall, phy_addr:dword, reg:dword
|
|
|
|
DEBUGF 1,"PHY read, addr=0x%x reg=0x%x\n", [phy_addr]:8, [reg]:8
|
|
|
|
mov eax, [phy_addr]
|
|
shl eax, 8
|
|
add eax, [reg]
|
|
add eax, MDIO_READ
|
|
set_io 0
|
|
set_io MMDIO
|
|
out dx, ax
|
|
|
|
;Wait for the read bit to be cleared.
|
|
mov ecx, 2048 ;limit
|
|
.read:
|
|
in ax, dx
|
|
test ax, MDIO_READ
|
|
jz @f
|
|
dec ecx
|
|
jnz .read
|
|
@@:
|
|
|
|
set_io MMRD
|
|
in ax, dx
|
|
and eax, 0xFFFF
|
|
|
|
DEBUGF 1,"PHY read, val=0x%x\n", eax:4
|
|
|
|
ret
|
|
|
|
endp
|
|
|
|
|
|
|
|
|
|
; Write a word data to PHY Chip
|
|
|
|
align 4
|
|
proc phy_write stdcall, phy_addr:dword, reg:dword, val:dword
|
|
|
|
DEBUGF 1,"PHY write, addr=0x%x reg=0x%x val=0x%x\n", [phy_addr]:8, [reg]:8, [val]:8
|
|
|
|
mov eax, [val]
|
|
set_io 0
|
|
set_io MMWD
|
|
out dx, ax
|
|
|
|
;Write the command to the MDIO bus
|
|
mov eax, [phy_addr]
|
|
shl eax, 8
|
|
add eax, [reg]
|
|
add eax, MDIO_WRITE
|
|
set_io MMDIO
|
|
out dx, ax
|
|
|
|
;Wait for the write bit to be cleared.
|
|
mov ecx, 2048 ;limit
|
|
.write:
|
|
in ax, dx
|
|
test ax, MDIO_WRITE
|
|
jz @f
|
|
dec ecx
|
|
jnz .write
|
|
@@:
|
|
|
|
DEBUGF 1,"PHY write ok\n"
|
|
|
|
ret
|
|
endp
|
|
|
|
|
|
|
|
align 4
|
|
read_mac:
|
|
|
|
DEBUGF 1,"Reading MAC:\n"
|
|
|
|
mov cx, 3
|
|
lea edi, [device.mac]
|
|
set_io 0
|
|
set_io MID_0L
|
|
.mac:
|
|
in ax, dx
|
|
stosw
|
|
inc dx
|
|
inc dx
|
|
dec cx
|
|
jnz .mac
|
|
|
|
DEBUGF 1,"%x-%x-%x-%x-%x-%x\n",[edi-6]:2, [edi-5]:2, [edi-4]:2, [edi-3]:2, [edi-2]:2, [edi-1]:2
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
; End of code
|
|
|
|
section '.data' data readable writable align 16 ; place all uninitialized data place here
|
|
align 4 ; Place all initialised data here
|
|
|
|
devices dd 0
|
|
version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF)
|
|
my_service db 'R6040',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
|
|
|