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//////////////////////////////////////////////////////////////////////
////                                                              ////
////  OpenCores 10/100 Ethernet MAC test and diagnosis program    ////
////                                                              ////
////  Description                                                 ////
////  Controllable ping program - also responds to ARP requests   ////
////                                                              ////
////  Author(s):                                                  ////
////      - Julius Baxter, julius@opencores.org                   ////
////        Parts from old Linux open_eth driver.                 ////
////                                                              ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2009,2011 Authors and OPENCORES.ORG            ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file is free software; you can redistribute it   ////
//// and/or modify it under the terms of the GNU Lesser General   ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source is distributed in the hope that it will be       ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
//// PURPOSE.  See the GNU Lesser General Public License for more ////
//// details.                                                     ////
////                                                              ////
//// You should have received a copy of the GNU Lesser General    ////
//// Public License along with this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
 
#include "cpu-utils.h"
#include "board.h"
#include "int.h"
#include "uart.h"
#include "ethmac.h"
#include "printf.h"
#include "eth-phy-mii.h"
 
 
volatile unsigned tx_done;
static int next_tx_buf_num;
 
#define OUR_IP_BYTES 0xc0,0xa8,0x64,0x9b // 192.168.100.155
#define OUR_IP_LONG 0xc0a8649b
 
//#define OUR_IP_BYTES 0xc0,0xa8,0x0,0x5a // 192.168.0.90
//#define OUR_IP_LONG 0xc0a8005a
 
//#define OUR_IP_BYTES 0xc0,0xa8,0x1,0x22 // 192.168.1.34
//#define OUR_IP_LONG 0xc0a80122
 
//#define OUR_IP_BYTES 0xc0,0xa8,0x1,0x2 // 192.168.1.2
//#define OUR_IP_LONG 0xc0a80102
 
//#define OUR_IP_BYTES 0xac,0x1e,0x0,0x2 // 172.30.0.2
//#define OUR_IP_LONG 0xac1e0002
 
//#define OUR_IP_BYTES 0xa,0x0,0x0,0x14 // 10.0.0.20
//#define OUR_IP_LONG 0x0a000014
 
 
static char our_ip[4] = {OUR_IP_BYTES};
 
#define DEST_IP_BYTES 0xc0,0xa8,0x64,0x69 // 192 .168.100.105
//#define DEST_IP_BYTES 0xc0,0xa8,0x01,0x08 // 192 .168.1.8
//#define DEST_IP_BYTES 0xc0,0xa8,0x00,0x0f // 192 .168.0.15
//#define DEST_IP_BYTES 0xac,0x1e,0x0,0x01 // 172.30.0.1
//#define DEST_IP_BYTES 0xa,0x0,0x0,0x1 // 10.0.0.1
 
#define BCAST_DEST_IP_BYTES 0xc0,0xa8,0x64,0xff // 192.168.100.255
//#define BCAST_DEST_IP_BYTES 0xc0,0xa8,0x01,0xff // 192.168.1.255
//#define BCAST_DEST_IP_BYTES 0xc0,0xa8,0x00,0xff // 192.168.0.255
//#define BCAST_DEST_IP_BYTES 0xa,0x0,0x0,0xff // 10.0.0.255
 
/* Functions in this file */
void ethmac_setup(void);
void oeth_printregs(void);
void ethphy_init(void);
void oeth_dump_bds();
/* Interrupt functions */
void oeth_interrupt(void);
static void oeth_rx(void);
static void oeth_tx(void);
/* Function to calculate checksum of ping responses we send */
unsigned short calculate_checksum(char* dats, unsigned int len) ;
 
// Global used to control whether we print out packets as we receive them
int print_packet_contents;
int packet_inspect_debug;
int print_ethmac_debug_reg;
 
/* Let the ethernet packets use a space beginning here for buffering */
#define ETH_BUFF_BASE 0x01000000
 
 
#define RXBUFF_PREALLOC 1
#define TXBUFF_PREALLOC 1
//#undef RXBUFF_PREALLOC
//#undef TXBUFF_PREALLOC
 
/* The transmitter timeout
*/
#define TX_TIMEOUT      (2*HZ)
 
/* Buffer number (must be 2^n)
*/
#define OETH_RXBD_NUM           124
#define OETH_TXBD_NUM           4
#define OETH_RXBD_NUM_MASK      (OETH_RXBD_NUM-1)
#define OETH_TXBD_NUM_MASK      (OETH_TXBD_NUM-1)
 
/* Buffer size
*/
#define OETH_RX_BUFF_SIZE       2048
#define OETH_TX_BUFF_SIZE       2048
 
/* Buffer size  (if not XXBUF_PREALLOC
*/
#define MAX_FRAME_SIZE          0x600
//#define MAX_FRAME_SIZE                2500
 
/* The buffer descriptors track the ring buffers.
*/
struct oeth_private {
  //struct      sk_buff* rx_skbuff[OETH_RXBD_NUM];
  //struct      sk_buff* tx_skbuff[OETH_TXBD_NUM];
 
  unsigned short        tx_next;/* Next buffer to be sent */
  unsigned short        tx_last;/* Next buffer to be checked if packet sent */
  unsigned short        tx_full;/* Buffer ring fuul indicator */
  unsigned short        rx_cur; /* Next buffer to be checked if packet received */
 
  oeth_regs     *regs;                  /* Address of controller registers. */
  oeth_bd               *rx_bd_base;            /* Address of Rx BDs. */
  oeth_bd               *tx_bd_base;            /* Address of Tx BDs. */
 
  //    struct net_device_stats stats;
};
 
int ethphy_found = -1;
 
#define PRINT_BIT_NAME(bit,name) printf("%02d:"name" %d\n",bit,!!(reg&(1<<bit)))
void oeth_print_moder(unsigned long reg)
{
        PRINT_BIT_NAME(16,"RECSMALL");
        PRINT_BIT_NAME(15,"PAD");
        PRINT_BIT_NAME(14,"HUGEN");
        PRINT_BIT_NAME(13,"CRCEN");
        PRINT_BIT_NAME(12,"DLYCRCEN");
        PRINT_BIT_NAME(10,"FULLD");
        PRINT_BIT_NAME(9,"EXDFREN");
        PRINT_BIT_NAME(8,"NOBCKOF");
        PRINT_BIT_NAME(7,"LOOPBCK");
        PRINT_BIT_NAME(6,"IFG");
        PRINT_BIT_NAME(5,"PRO");
        PRINT_BIT_NAME(4,"IAM");
        PRINT_BIT_NAME(3,"BRO");
        PRINT_BIT_NAME(2,"NOPRE");
        PRINT_BIT_NAME(1,"TXEN");
        PRINT_BIT_NAME(0,"RXEN");
}
 
void oeth_print_intsource(unsigned long reg)
{
        PRINT_BIT_NAME(6,"RXCtrlFrame");
        PRINT_BIT_NAME(5,"TXCtrlFrame");
        PRINT_BIT_NAME(4,"BUSY");
        PRINT_BIT_NAME(3,"RXE");
        PRINT_BIT_NAME(2,"RXB");
        PRINT_BIT_NAME(1,"TXE");
        PRINT_BIT_NAME(0,"TXB");
}
 
void oeth_print_ctrlmoder(unsigned long reg)
{
        PRINT_BIT_NAME(2,"TXFLOW");
        PRINT_BIT_NAME(1,"RXFLOW");
        PRINT_BIT_NAME(0,"PASSALL");
}
 
void oeth_print_txbuf(unsigned long reg)
{
        printf("RD%d ",!!(reg&(1<<15)));
        printf("IQ%d ",!!(reg&(1<<14)));
        printf("WP%d ",!!(reg&(1<<13)));
        printf("PD%d ",!!(reg&(1<<12)));
        printf("CC%d ",!!(reg&(1<<11)));
        printf("UN%d ",!!(reg&(1<<8)));
        printf("RY%d ",!!(reg&(1<<3)));
        printf("LC%d ",!!(reg&(1<<2)));
        printf("DF%d ",!!(reg&(1<<1)));
        printf("CS%d ",!!(reg&(1<<0)));
        printf("\n");
 
}
 
 
void oeth_print_rxbuf(unsigned long reg)
{
        printf("EM%d ",!!(reg&(1<<15)));
        printf("IQ%d ",!!(reg&(1<<14)));
        printf("WP%d ",!!(reg&(1<<13)));
        printf("PD%d ",!!(reg&(1<<12)));
        printf("CF%d ",!!(reg&(1<<8)));
        //printf("MS%d ",!!(reg&(1<<7)));
        printf("OR%d ",!!(reg&(1<<6)));
        printf("IS%d ",!!(reg&(1<<5)));
        printf("DN%d ",!!(reg&(1<<4)));
        printf("TL%d ",!!(reg&(1<<3)));
        printf("SF%d ",!!(reg&(1<<2)));
        printf("CE%d ",!!(reg&(1<<1)));
        printf("LC%d ",!!(reg&(1<<0)));
        printf("\n");
 
}
 
//      PRINT_BIT_NAME(,"");
void oeth_printregs(void)
{
  volatile oeth_regs *regs;
  regs = (oeth_regs *)(OETH_REG_BASE);
 
  printf("Oeth regs: Mode Register : 0x%lx\n",
         (unsigned long) regs->moder);          /* Mode Register */
  oeth_print_moder((unsigned long) regs->moder);
  printf("Oeth regs: Interrupt Source Register 0x%lx\n",
         (unsigned long) regs->int_src);        /* Interrupt Source Register */
  oeth_print_intsource((unsigned long) regs->int_src);
  printf("Oeth regs: Interrupt Mask Register 0x%lx\n",
         (unsigned long) regs->int_mask);       /* Interrupt Mask Register */
  printf("Oeth regs: Back to Bak Inter Packet Gap Register 0x%lx\n",
         (unsigned long) regs->ipgt);           /* Back to Bak Inter Packet Gap Register */
  printf("Oeth regs: Non Back to Back Inter Packet Gap Register 1 0x%lx\n",
         (unsigned long) regs->ipgr1);          /* Non Back to Back Inter Packet Gap Register 1 */
  printf("Oeth regs: Non Back to Back Inter Packet Gap Register 2 0x%lx\n",
         (unsigned long) regs->ipgr2);          /* Non Back to Back Inter Packet Gap Register 2 */
  printf("Oeth regs: Packet Length Register (min. and max.) 0x%lx\n",
         (unsigned long) regs->packet_len);     /* Packet Length Register (min. and max.) */
  printf("Oeth regs: Collision and Retry Configuration Register 0x%lx\n",
         (unsigned long) regs->collconf);       /* Collision and Retry Configuration Register */
  printf("Oeth regs: Transmit Buffer Descriptor Number Register 0x%lx\n",
         (unsigned long) regs->tx_bd_num);      /* Transmit Buffer Descriptor Number Register */
  printf("Oeth regs: Control Module Mode Register 0x%lx\n",
         (unsigned long) regs->ctrlmoder);      /* Control Module Mode Register */
  oeth_print_ctrlmoder((unsigned long) regs->ctrlmoder);
  printf("Oeth regs: MII Mode Register 0x%lx\n",
         (unsigned long) regs->miimoder);       /* MII Mode Register */
  printf("Oeth regs: MII Command Register 0x%lx\n",
         (unsigned long) regs->miicommand);     /* MII Command Register */
  printf("Oeth regs: MII Address Register 0x%lx\n",
         (unsigned long) regs->miiaddress);     /* MII Address Register */
  printf("Oeth regs: MII Transmit Data Register 0x%lx\n",
         (unsigned long) regs->miitx_data);     /* MII Transmit Data Register */
  printf("Oeth regs: MII Receive Data Register 0x%lx\n",
         (unsigned long) regs->miirx_data);     /* MII Receive Data Register */
  printf("Oeth regs: MII Status Register 0x%lx\n",
         (unsigned long) regs->miistatus);      /* MII Status Register */
  printf("Oeth regs: MAC Individual Address Register 0 0x%lx\n",
         (unsigned long) regs->mac_addr0);      /* MAC Individual Address Register 0 */
  printf("Oeth regs: MAC Individual Address Register 1 0x%lx\n",
         (unsigned long) regs->mac_addr1);      /* MAC Individual Address Register 1 */
  printf("Oeth regs: Hash Register 0 0x%lx\n",
         (unsigned long) regs->hash_addr0);     /* Hash Register 0 */
  printf("Oeth regs: Hash Register 1  0x%lx\n",
         (unsigned long) regs->hash_addr1);     /* Hash Register 1 */
  printf("Oeth regs: TXCTRL  0x%lx\n",
         (unsigned long) regs->txctrl);     /* TX ctrl reg */
  printf("Oeth regs: RXCTRL  0x%lx\n",
         (unsigned long) regs->rxctrl);     /* RX ctrl reg */
  printf("Oeth regs: WBDBG  0x%lx\n",
         (unsigned long) regs->wbdbg);     /* Wishbone debug reg */
 
}
 
void oeth_print_wbdebug(void)
{
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
        printf("Oeth regs: WBDBG  0x%lx\n",
               (unsigned long) regs->wbdbg);     /* Wishbone debug reg */
}
 
static int last_char;
 
void spin_cursor(void)
{
#ifdef RTLSIM
  return;
#endif
  volatile unsigned int i; // So the loop doesn't get optimised away
  printf("\r");
  if (last_char == 0)
    printf("/");
  else if (last_char == 1)
    printf("-");
  else if (last_char == 2)
    printf("\\");
  else if (last_char == 3)
    printf("|");
  else if (last_char == 4)
    printf("/");
  else if (last_char == 5)
    printf("-");
  else if (last_char == 6)
    printf("\\");
  else if (last_char == 7)
    {
      printf("|");
      last_char=-1;
    }
  printf("\r");
  last_char++;
 
  for(i=0;i<150000;i++);
 
}
 
static inline void ethphy_smi_read(void)
{
 
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
 
        regs->miicommand = OETH_MIICOMMAND_RSTAT;
         /* Wait for command to be registered*/
        while(!(regs->miistatus & OETH_MIISTATUS_BUSY));
 
        regs->miicommand = 0;
 
        while(regs->miistatus & OETH_MIISTATUS_BUSY);
}
 
 
void
eth_mii_write(char phynum, short regnum, short data)
{
  static volatile oeth_regs *regs = (oeth_regs *)(OETH_REG_BASE);
  regs->miiaddress = (regnum << 8) | phynum;
  regs->miitx_data = data;
  regs->miicommand = OETH_MIICOMMAND_WCTRLDATA;
  regs->miicommand = 0;
  while(regs->miistatus & OETH_MIISTATUS_BUSY);
}
 
short
eth_mii_read(char phynum, short regnum)
{
  static volatile oeth_regs *regs = (oeth_regs *)(OETH_REG_BASE);
  regs->miiaddress = (regnum << 8) | phynum;
  regs->miicommand = OETH_MIICOMMAND_RSTAT;
  regs->miicommand = 0;
  while(regs->miistatus & OETH_MIISTATUS_BUSY);
 
  return regs->miirx_data;
}
 
 
/* Scan the MIIM bus for PHYs */
void scan_ethphys(void)
{
  unsigned int phynum,regnum, i;
 
  volatile oeth_regs *regs;
  regs = (oeth_regs *)(OETH_REG_BASE);
 
  regs->miitx_data = 0;
 
  printf("Locating Ethernet PHYs on MDIO bus\n");
 
  for(phynum=0;phynum<32;phynum++)
    {
      for (regnum=0;regnum<8;regnum++)
        {
 
 
          /* Now actually perform the read on the MIIM bus*/
          regs->miiaddress = (regnum << 8) | phynum; /* Basic Control Register */
          ethphy_smi_read();
 
          //printf("%x\n",regs->miirx_data);
 
          // Remember first phy found
          if (regnum==0 && regs->miirx_data!=0xffff)
          {
                  // Save found phy address in global variable ethphy_found
                  // for use elsewhere.
                  ethphy_found = phynum;
                  printf("PHY detected at address %d\n",phynum);
                  return;
          }
 
        }
    }
}
 
 
/* Scan the MIIM bus for PHYs */
void scan_ethphy(unsigned int phynum)
{
  unsigned int regnum, i;
 
  volatile oeth_regs *regs;
  regs = (oeth_regs *)(OETH_REG_BASE);
 
  regs->miitx_data = 0;
 
  for (regnum=0;regnum<32;regnum++)
    {
      printf("scan_ethphy%d: r%x ",phynum, regnum);
 
      /* Now actually perform the read on the MIIM bus*/
      regs->miiaddress = (regnum << 8) | phynum; /* Basic Control Register */
 
      ethphy_smi_read();
 
      printf("%x\n",regs->miirx_data);
    }
 
}
 
 
void ethphy_toggle_loopback(void)
{
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
 
        // First read the loopback bit from the basic control reg
        if (eth_mii_read(ethphy_found%0xff, 0) & (1<<14))
        {
                printf("Disabling PHY loopback\n");
                eth_mii_write(ethphy_found, 0,
                              eth_mii_read(ethphy_found,0) & ~(1<<14));
        }
        else
        {
                printf("Enabling PHY loopback\n");
                eth_mii_write(ethphy_found, 0,
                              eth_mii_read(ethphy_found,0) | (1<<14));
        }
 
}
 
void marvell_phy_toggle_delay(void)
{
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
 
        // First read the loopback bit from the basic control reg
        if (eth_mii_read(ethphy_found%0xff, 20) & (1<<1))
        {
                printf("Disabling PHY GTX_CLK delay\n");
                eth_mii_write(ethphy_found, 20,
                              eth_mii_read(ethphy_found,20) & ~(1<<1));
        }
        else
        {
                printf("Enabling PHY GTX_CLK delay\n");
                eth_mii_write(ethphy_found, 20,
                              eth_mii_read(ethphy_found,20) | (1<<1));
        }
 
}
 
void ethphy_toggle_gigadvertise()
{
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
        // Are we advertising gige?
        if (eth_mii_read(ethphy_found%0xff, 9) & (1<<8))
        {
                printf("Disabling 1000base-t advertisement\n");
                eth_mii_write(ethphy_found, 9,
                              eth_mii_read(ethphy_found,9) & ~((1<<8)|(1<<9)));
        }
        else
        {
                printf("Enabling 1000base-t advertisement\n");
                eth_mii_write(ethphy_found, 9,
                              eth_mii_read(ethphy_found,9) | ((1<<8)|(1<<9)));
        }
 
 
 
}
 
void ethmac_scanstatus(void)
{
  volatile oeth_regs *regs;
  regs = (oeth_regs *)(OETH_REG_BASE);
 
 
  printf("Oeth: regs->miistatus %x regs->miirx_data %x\n",regs->miistatus, regs->miirx_data);
  regs->miiaddress = 0;
  regs->miitx_data = 0;
  regs->miicommand = OETH_MIICOMMAND_SCANSTAT;
  printf("Oeth: regs->miiaddress %x regs->miicommand %x\n",regs->miiaddress, regs->miicommand);
  //regs->miicommand = 0; 
  volatile int i; for(i=0;i<1000;i++);
  while(regs->miistatus & OETH_MIISTATUS_BUSY) ;
  //spin_cursor(); 
  //printf("\r"); 
  //or32_exit(0);
}
 
 
void
ethphy_reset(int phynum)
{
  eth_mii_write(phynum, MII_BMCR,
                (eth_mii_read(phynum,MII_BMCR)|BMCR_RESET));
}
 
 
void
ethphy_reneg(int phynum)
{
  eth_mii_write(phynum, MII_BMCR,
                (eth_mii_read(phynum,MII_BMCR)|BMCR_ANRESTART));
}
 
void
ethphy_set_10mbit(int phynum)
{
  // Hardset PHY to just use 10Mbit mode
  short cr = eth_mii_read(phynum, MII_BMCR);
  cr &= ~BMCR_ANENABLE; // Clear auto negotiate bit
  cr &= ~BMCR_SPEED100; // Clear fast eth. bit
  eth_mii_write(phynum, MII_BMCR, cr);
}
 
void
ethphy_set_100mbit(int phynum)
{
  // Hardset PHY to just use 10Mbit mode
  short cr = eth_mii_read(phynum, MII_BMCR);
  cr &= ~(1<<6);
  cr |= (1<<13);
  eth_mii_write(phynum, MII_BMCR, cr);
}
 
void
ethphy_toggle_autoneg(int phynum)
{
 
  short cr = eth_mii_read(phynum, MII_BMCR);
  if (cr & BMCR_ANENABLE)
          printf("Disabling PHY autonegotiation\n");
  else
          printf("Enabling PHY autonegotiation\n");
 
  cr ^= BMCR_ANENABLE; // Toggle auto negotiate bit
  eth_mii_write(phynum, MII_BMCR, cr);
}
 
 
void ethphy_print_status(int phyaddr)
{
  short regnum, value;
  int bitnum;
  int bitset;
  short reg2;
  printf("phyaddr %d\n",phyaddr);
  for  (regnum = 0;regnum<16; regnum++)
    {
      value = eth_mii_read(phyaddr, regnum);
      printf("\treg 0x%x: ", regnum);
      switch(regnum)
        {
        case 0:
          printf("basic control\n");
          for(bitnum = 0; bitnum<16;bitnum++)
            {
              bitset = !!(value & (1<<bitnum));
              switch(bitnum)
                {
                case 0:
                  printf("\t\tbit%d:\t%d \t(disable transmitter)\n",bitnum,bitset);
                  break;
                case 6:
                  printf("\t\tbit%d:\t%d \t(msb speed (1000))\n",bitnum,bitset);
                  break;
                case 7:
                  printf("\t\tbit%d:\t%d \t(collision test)\n",bitnum,bitset);
                  break;
                case 8:
                  printf("\t\tbit%d:\t%d \t(duplex mode)\n",bitnum,bitset);
                  break;
                case 9:
                  printf("\t\tbit%d:\t%d \t(restart autoneg)\n",bitnum,bitset);
                  break;
                case 10:
                  printf("\t\tbit%d:\t%d \t(isloate)\n",bitnum,bitset);
                  break;
                case 11:
                  printf("\t\tbit%d:\t%d \t(power down)\n",bitnum,bitset);
                  break;
                case 12:
                  printf("\t\tbit%d:\t%d \t(autoneg enable)\n",bitnum,bitset);
                  break;
                case 13:
                  printf("\t\tbit%d:\t%d \t(speed select)\n",bitnum,bitset);
                  break;
                case 14:
                  printf("\t\tbit%d:\t%d \t(loop back)\n",bitnum,bitset);
                  break;
                case 15:
                  printf("\t\tbit%d:\t%d \t(reset)\n",bitnum,bitset);
                  break;
                default:
                  break;
                }
            }
          break;
        case 1:
          printf("basic status\n");
          for(bitnum = 0; bitnum<16;bitnum++)
            {
              bitset = !!(value & (1<<bitnum));
              switch(bitnum)
                {
                case 0:
                  printf("\t\tbit%d:\t%d \t(extend capability)\n",bitnum,bitset);
                  break;
                case 1:
                  printf("\t\tbit%d:\t%d \t(jabber detect)\n",bitnum,bitset);
                  break;
                case 2:
                  printf("\t\tbit%d:\t%d \t(link status)\n",bitnum,bitset);
                  break;
                case 3:
                  printf("\t\tbit%d:\t%d \t(autoneg capability)\n",bitnum,bitset);
                  break;
                case 4:
                  printf("\t\tbit%d:\t%d \t(remote fault)\n",bitnum,bitset);
                  break;
                case 5:
                  printf("\t\tbit%d:\t%d \t(autoneg complete)\n",bitnum,bitset);
                  break;
                case 6:
                  printf("\t\tbit%d:\t%d \t(no preamble)\n",bitnum,bitset);
                  break;
                case 11:
                  printf("\t\tbit%d:\t%d \t(10base-t half dup.)\n",bitnum,bitset);
                  break;
                case 12:
                  printf("\t\tbit%d:\t%d \t(10base-t full dup.)\n",bitnum,bitset);
                  break;
                case 13:
                  printf("\t\tbit%d:\t%d \t(100base-t half dup.)\n",bitnum,bitset);
                  break;
                case 14:
                  printf("\t\tbit%d:\t%d \t(100base-t full dup.)\n",bitnum,bitset);
                  break;
                case 15:
                  printf("\t\tbit%d:\t%d \t(100base-t4)\n",bitnum,bitset);
                  break;
                default:
                  break;
 
                }
            }
          break;
        case 2:
                // We'll do presentation of phy ID in reg 3
                reg2 = value;
                printf("\n");
                break;
        case 3:
                printf("\t\tPHY Identifier (regs 2,3)\n");
                printf("\t\tOrganizationally Unique Identifier (OUI): 0x%06x\n",
                       ((reg2<<6) | ((value>>10)&0x3f)));
                printf("\t\tManufacturer's Model: 0x%02x\n",(value>>4)&0x3f);
                printf("\t\tRevision number: 0x%01x\n",value&0xf);
                break;
        case 4:
          printf("autoneg advertise reg\n");
          for(bitnum = 0; bitnum<16;bitnum++)
            {
              bitset = !!(value & (1<<bitnum));
              switch(bitnum)
                {
                case 5:
                  printf("\t\tbit%d:\t%d \t(10mbps cap.)\n",bitnum,bitset);
                  break;
                case 6:
                  printf("\t\tbit%d:\t%d \t(10base-5 full dup. cap.)\n",bitnum,bitset);
                  break;
                case 7:
                  printf("\t\tbit%d:\t%d \t(100base-tx cap.)\n",bitnum,bitset);
                  break;
                case 8:
                  printf("\t\tbit%d:\t%d \t(100base-tx full dup. cap.)\n",bitnum,bitset);
                  break;
                case 9:
                  printf("\t\tbit%d:\t%d \t(100base-t4 cap.)\n",bitnum,bitset);
                  break;
                case 10:
                  printf("\t\tbit%d:\t%d \t(pause cap.)\n",bitnum,bitset);
                  break;
                case 13:
                  printf("\t\tbit%d:\t%d \t(remote fault sup.)\n",bitnum,bitset);
                  break;
                case 15:
                  printf("\t\tbit%d:\t%d \t(next page cap.)\n",bitnum,bitset);
                  break;
 
                default:
                  break;
                }
            }
          break;
        case 5:
          printf("autoneg link partner ability\n");
          for(bitnum = 0; bitnum<16;bitnum++)
            {
              bitset = !!(value & (1<<bitnum));
              switch(bitnum)
                {
                case 5:
                  printf("\t\tbit%d:\t%d \t(10mbps cap.)\n",bitnum,bitset);
                  break;
                case 6:
                  printf("\t\tbit%d:\t%d \t(10base-5 full dup. cap.)\n",bitnum,bitset);
                  break;
                case 7:
                  printf("\t\tbit%d:\t%d \t(100base-tx cap.)\n",bitnum,bitset);
                  break;
                case 8:
                  printf("\t\tbit%d:\t%d \t(100base-tx full dup. cap.)\n",bitnum,bitset);
                  break;
                case 9:
                  printf("\t\tbit%d:\t%d \t(100base-t4 cap.)\n",bitnum,bitset);
                  break;
                case 10:
                  printf("\t\tbit%d:\t%d \t(pause cap bit0)\n",bitnum,bitset);
                  break;
                case 11:
                  printf("\t\tbit%d:\t%d \t(pause cap bit1)\n",bitnum,bitset);
                  break;
 
                case 13:
                  printf("\t\tbit%d:\t%d \t(remote fault sup.)\n",bitnum,bitset);
                  break;
                case 14:
                  printf("\t\tbit%d:\t%d \t(acknowledge)\n",bitnum,bitset);
                  break;
                case 15:
                  printf("\t\tbit%d:\t%d \t(next page cap.)\n",bitnum,bitset);
                  break;
 
                default:
                  break;
                }
            }
          break;
        case 9:
          printf("1000mbit advertise\n");
          for(bitnum = 0; bitnum<16;bitnum++)
            {
              bitset = !!(value & (1<<bitnum));
              switch(bitnum)
                {
                case 8:
                  printf("\t\tbit%d:\t%d \t(1000base-t half dup)\n",bitnum,bitset);
                  break;
                case 9:
                  printf("\t\tbit%d:\t%d \t(1000base-t full dup)\n",bitnum,bitset);
                  break;
                default:
                  break;
                }
            }
          break;
        case 0xf:
          printf("extended status\n");
          for(bitnum = 0; bitnum<16;bitnum++)
            {
              bitset = !!(value & (1<<bitnum));
              switch(bitnum)
                {
                case 12:
                  printf("\t\tbit%d:\t%d \t(1000mb half dup.)\n",bitnum,bitset);
                  break;
                case 13:
                  printf("\t\tbit%d:\t%d \t(1000mb full dup.)\n",bitnum,bitset);
                  break;
                default:
                  break;
                }
            }
          break;
          /*    case 1:
          for(bitnum = 0; bitnum<16;bitnum++)
          {
          bitset = !!(value & (1<<bitnum));
          switch(bitnum)
          {
          case 0:
          printf("\t\tbit%d:\t%d \t()\n",bitnum,bitset);
          break;
          default:
          break;
          }
          }
          break;
          */
        default:
          printf("ignored\n");
          break;
        }
    }
 
 
 
}
 
void ethphy_init(void)
{
        short ctl;
        scan_ethphys();
 
        // Restart autoneg
        printf("Resetting phy...\n");
        ctl = eth_mii_read(ethphy_found, MII_BMCR);
        ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
        eth_mii_write(ethphy_found, MII_BMCR, ctl);
 
        printf("\nOeth: PHY control reg: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_BMCR));
        printf("Oeth: PHY control reg: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_BMSR));
        printf("Oeth: PHY id0: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_PHYSID1));
        printf("Oeth: PHY id1: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_PHYSID2));
        printf("Oeth: PHY adv: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_ADVERTISE));
        printf("Oeth: PHY lpa: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_LPA));
        printf("Oeth: PHY physpec: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_M1011_PHY_SPEC_CONTROL));
        printf("Oeth: PHY expansion: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_EXPANSION ));
        printf("Oeth: PHY ctrl1000: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_CTRL1000));
        printf("Oeth: PHY stat1000: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_STAT1000));
        printf("Oeth: PHY estatus: 0x%.4x\n",
               eth_mii_read(ethphy_found, MII_ESTATUS));
 
 
}
 
 
void ethmac_setup(void)
{
  // from arch/or32/drivers/open_eth.c
  volatile oeth_regs *regs;
 
  regs = (oeth_regs *)(OETH_REG_BASE);
 
  /*printf("\nbefore reset\n\n");
  oeth_printregs();*/
 
  /* Reset MII mode module */
  regs->miimoder = OETH_MIIMODER_RST; /* MII Reset ON */
  regs->miimoder &= ~OETH_MIIMODER_RST; /* MII Reset OFF */
  regs->miimoder = 0x64; /* Clock divider for MII Management interface */
 
  /* Reset the controller.
  */
  regs->moder = OETH_MODER_RST; /* Reset ON */
  regs->moder &= ~OETH_MODER_RST;       /* Reset OFF */
 
  //printf("\nafter reset\n\n");
  //oeth_printregs();
 
  /* Setting TXBD base to OETH_TXBD_NUM.
  */
  regs->tx_bd_num = OETH_TXBD_NUM;
 
 
  /* Set min/max packet length
  */
  //regs->packet_len = 0x00400600;
  regs->packet_len = (0x0040 << 16) | (MAX_FRAME_SIZE & 0xffff);
 
  /* Set IPGT register to recomended value
  */
  regs->ipgt = 0x12;
 
  /* Set IPGR1 register to recomended value
  */
  regs->ipgr1 = 0x0000000c;
 
  /* Set IPGR2 register to recomended value
  */
  regs->ipgr2 = 0x00000012;
 
  /* Set COLLCONF register to recomended value
  */
  regs->collconf = 0x000f003f;
 
  /* Set control module mode
  */
#if 0
  regs->ctrlmoder = OETH_CTRLMODER_TXFLOW | OETH_CTRLMODER_RXFLOW;
#else
  regs->ctrlmoder = 0;
#endif
 
  /* Clear MIIM registers */
  regs->miitx_data = 0;
  regs->miiaddress = 0;
  regs->miicommand = 0;
 
  regs->mac_addr1 = ETH_MACADDR0 << 8 | ETH_MACADDR1;
  regs->mac_addr0 = ETH_MACADDR2 << 24 | ETH_MACADDR3 << 16 |
    ETH_MACADDR4 << 8 | ETH_MACADDR5;
 
  /* Clear all pending interrupts
  */
  regs->int_src = 0xffffffff;
 
  /* Promisc, IFG, CRCEn
  */
  regs->moder |= OETH_MODER_PRO | OETH_MODER_PAD | OETH_MODER_IFG |
    OETH_MODER_CRCEN | OETH_MODER_FULLD;
 
  /* Enable interrupt sources.
  */
 
  regs->int_mask = OETH_INT_MASK_TXB    |
    OETH_INT_MASK_TXE   |
    OETH_INT_MASK_RXF   |
    OETH_INT_MASK_RXE   |
    OETH_INT_MASK_BUSY  |
    OETH_INT_MASK_TXC   |
    OETH_INT_MASK_RXC;
 
  // Buffer setup stuff
  volatile oeth_bd *tx_bd, *rx_bd;
  int i,j,k;
 
  /* Initialize TXBD pointer
  */
  tx_bd = (volatile oeth_bd *)OETH_BD_BASE;
 
  /* Initialize RXBD pointer
  */
  rx_bd = ((volatile oeth_bd *)OETH_BD_BASE) + OETH_TXBD_NUM;
 
  /* Preallocated ethernet buffer setup */
  unsigned long mem_addr = ETH_BUFF_BASE; /* Defined at top */
 
  // Setup TX Buffers
  for(i = 0; i < OETH_TXBD_NUM; i++) {
    //tx_bd[i].len_status = OETH_TX_BD_PAD | OETH_TX_BD_CRC | OETH_RX_BD_IRQ;
    tx_bd[i].len_status = OETH_TX_BD_PAD | OETH_TX_BD_CRC;
    tx_bd[i].addr = mem_addr;
    mem_addr += OETH_TX_BUFF_SIZE;
  }
  tx_bd[OETH_TXBD_NUM - 1].len_status |= OETH_TX_BD_WRAP;
 
  // Setup RX buffers
  for(i = 0; i < OETH_RXBD_NUM; i++) {
    rx_bd[i].len_status = OETH_RX_BD_EMPTY | OETH_RX_BD_IRQ; // Init. with IRQ
    rx_bd[i].addr = mem_addr;
    mem_addr += OETH_RX_BUFF_SIZE;
  }
  rx_bd[OETH_RXBD_NUM - 1].len_status |= OETH_RX_BD_WRAP; // Last buffer wraps
 
  /* Enable receiver and transmiter
  */
  regs->moder |= OETH_MODER_RXEN | OETH_MODER_TXEN;
 
  next_tx_buf_num = 0; // init tx buffer pointer
 
  return;
}
 
void oeth_ctrlmode_switch(void)
{
        volatile oeth_regs *regs;
 
        regs = (oeth_regs *)(OETH_REG_BASE);
 
        if (regs->ctrlmoder & (OETH_CTRLMODER_TXFLOW | OETH_CTRLMODER_RXFLOW))
        {
                printf("Disabling TX/RX flow control");
 
                regs->ctrlmoder = 0;
        }
        else
        {
                printf("Enabling TX/RX flow control");
 
                regs->ctrlmoder = (OETH_CTRLMODER_TXFLOW |
                                   OETH_CTRLMODER_RXFLOW);
 
        }
 
}
 
void
oeth_toggle_promiscuous(void)
{
        // from arch/or32/drivers/open_eth.c
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
 
        if (  regs->moder & OETH_MODER_PRO )
        {
                printf("Disabling ");
                regs->moder &= ~OETH_MODER_PRO;
 
        }
        else
        {
                printf("Enabling ");
                regs->moder |= OETH_MODER_PRO;
 
        }
        printf("promisucous mode\n");
}
 
void oeth_transmit_pause(void)
{
 
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
        regs->txctrl = 0x1fffe;
}
 
 
void
ethmac_togglehugen(void)
{
 
  volatile oeth_regs *regs;
  regs = (oeth_regs *)(OETH_REG_BASE);
 
  regs->moder ^= OETH_MODER_HUGEN; // Toggle huge packet enable
 
  if (regs->moder & OETH_MODER_HUGEN) // If we just enabled huge packets
    regs->packet_len = (0x0040 << 16) | (((64*1024)-4) & 0xffff);
  else
    // back to normal
    regs->packet_len = (0x0040 << 16) | (MAX_FRAME_SIZE & 0xffff);
 
  return;
 
}
 
void
oeth_reset_tx_bd_pointer(void)
{
  printf("Resetting TX BD pointer\n");
  // from arch/or32/drivers/open_eth.c
  volatile oeth_regs *regs;
  regs = (oeth_regs *)(OETH_REG_BASE);
 
  // Toggle TXEN bit, resetting TX BD number
  regs->moder &= OETH_MODER_TXEN;
  regs->moder |= OETH_MODER_TXEN;
 
  next_tx_buf_num = 0; // init tx buffer pointer
 
}
 
 
 
/* Find the next available transmit buffer */
struct oeth_bd* get_next_tx_bd()
{
 
  int i;
  volatile oeth_bd *tx_bd;
  tx_bd = (volatile oeth_bd *)OETH_BD_BASE; /* Search from beginning*/
 
  /* Go through the TX buffs, search for unused one */
  for(i = next_tx_buf_num; i < OETH_TXBD_NUM; i++) {
 
    if(!(tx_bd[i].len_status & OETH_TX_BD_READY)) /* Looking for buffer NOT ready for transmit. ie we can manipulate it */
      {
        if (print_packet_contents)
          printf("Oeth: Using TX_bd at 0x%lx\n",(unsigned long)&tx_bd[i]);
 
        if (next_tx_buf_num == OETH_TXBD_NUM-1) next_tx_buf_num = 0;
        else next_tx_buf_num++;
 
        return (struct oeth_bd*) &tx_bd[i];
      }
 
    if ((i == OETH_TXBD_NUM-1) && (next_tx_buf_num != 0))
      i = 0;
 
  }
 
  printf("No free tx buffers\n");
  /* Set to null our returned buffer */
  tx_bd = (volatile oeth_bd *) 0;
  return (struct oeth_bd*) tx_bd;
 
}
 
/* print packet contents */
static void
oeth_print_packet(int bd, unsigned long add, int len)
{
 
        int truncate = (len > 256);
  int length_to_print = truncate ? 256 : len;
 
  int i;
  printf("\nbd%03d packet: add = %lx len = %d\n", bd,add, len);
  for(i = 0; i < length_to_print; i++) {
    if(!(i % 8))
      printf(" ");
    if(!(i % 16))
      printf("\n");
    printf(" %.2x", *(((unsigned char *)add) + i));
 
  }
  printf("\n");
 
  if (truncate)
    printf("\ttruncated....\n");
 
}
 
/* Setup buffer descriptors with data */
/* length is in BYTES */
void tx_packet(void* data, int length)
{
  volatile oeth_regs *regs;
  regs = (oeth_regs *)(OETH_REG_BASE);
 
  volatile oeth_bd *tx_bd;
  volatile int i;
 
 
  tx_bd = (volatile oeth_bd *)OETH_BD_BASE;
  tx_bd = (struct oeth_bd*) &tx_bd[next_tx_buf_num];
 
  /*if((tx_bd = (volatile oeth_bd *) get_next_tx_bd()) == NULL)
  {
  printf("No more TX buffers available\n");
  return;
  }
  */
  if (print_packet_contents)
    printf("Oeth: Using TX_bd buffer address: 0x%lx\n",(unsigned long) tx_bd->addr);
 
  /* Clear all of the status flags.
  */
  tx_bd->len_status &= ~OETH_TX_BD_STATS;
 
  /* If the frame is short, tell CPM to pad it.
  */
#define ETH_ZLEN        60   /* Min. octets in frame sans FCS */
  if (length <= ETH_ZLEN)
    tx_bd->len_status |= OETH_TX_BD_PAD;
  else
    tx_bd->len_status &= ~OETH_TX_BD_PAD;
 
  //printf("Oeth: Copying %d bytes from 0x%lx to TX_bd buffer at 0x%lx\n",length,(unsigned long) data,(unsigned long) tx_bd->addr);
 
  /* Copy the data into the transmit buffer, byte at a time */
  char* data_p = (char*) data;
  char* data_b = (char*) tx_bd->addr;
  for(i=0;i<length;i++)
    {
      data_b[i] = data_p[i];
    }
  //printf("Oeth: Data copied to buffer\n");
 
  /* Set the length of the packet's data in the buffer descriptor */
  tx_bd->len_status = (tx_bd->len_status & 0x0000ffff) |
    ((length&0xffff) << 16);
 
  //oeth_print_packet(tx_bd->addr, (tx_bd->len_status >> 16));
 
  /* Send it on its way.  Tell controller its ready, interrupt when sent
  * and to put the CRC on the end.
  */
  tx_bd->len_status |= (OETH_TX_BD_READY  | OETH_TX_BD_CRC | OETH_TX_BD_IRQ);
 
  //next_tx_buf_num = (next_tx_buf_num + 1) & OETH_TXBD_NUM_MASK;
  next_tx_buf_num++;
  if (next_tx_buf_num == OETH_TXBD_NUM)
  {
          next_tx_buf_num = 0;
  }
 
 
  return;
 
 
}
 
/* enable RX, loop waiting for arrived packets and print them out */
void oeth_monitor_rx(void)
{
  volatile oeth_regs *regs;
  regs = (oeth_regs *)(OETH_REG_BASE);
 
  /* Set RXEN in MAC MODER */
  regs->moder = OETH_MODER_RXEN | regs->moder;
 
 
  volatile oeth_bd *rx_bd;
  rx_bd = ((volatile oeth_bd *)OETH_BD_BASE) + OETH_TXBD_NUM;
 
  volatile int i;
 
  for(i=0;i<OETH_RXBD_NUM;i++)
    {
      if (!(rx_bd[i].len_status & OETH_RX_BD_EMPTY)) /* Not empty */
        {
          // Something in this buffer!
          printf("Oeth: RX in buf %d - len_status: 0x%lx\n",i, rx_bd[i].len_status);
          oeth_print_packet(i,rx_bd[i].addr, rx_bd[i].len_status >> 16);
          /* Clear recieved bit */
          rx_bd[i].len_status |=  OETH_RX_BD_EMPTY;
          printf("\t end of packet\n\n");
        }
    }
}
 
#include "spr-defs.h"
 
/* Print out all buffer descriptors */
void oeth_dump_bds()
{
        // Disable interrupts
        mtspr (SPR_SR, mfspr (SPR_SR) & ~SPR_SR_IEE);
 
        unsigned long* bd_base = (unsigned long*) OETH_BD_BASE;
 
        int i;
        for(i=0;i<OETH_TXBD_NUM;i++)
        {
                printf("TXBD%03d len_status %08lx ",i,*bd_base);
                oeth_print_txbuf(*bd_base++);
                //printf("addr: %lx\n", *bd_base++);
                *bd_base++;
        }
 
        for(i=0;i<OETH_RXBD_NUM;i++)
        {
                printf("RXBD%03d len_status %08lx ",i,*bd_base);
                oeth_print_rxbuf(*bd_base++);
                *bd_base++;
 
                //printf("addr: %lx\n", *bd_base++);
        }
 
        // Enable interrupts
        mtspr (SPR_SR, mfspr (SPR_SR) | SPR_SR_IEE);
 
}
 
 
 
char broadcast_ping_packet[] =  {
  0xff,0xff,0xff,0xff,0xff,0xff, /*SRC MAC*/
  0x00, 0x12, 0x34, 0x56, 0x78, 0x9a, /*SRC MAC*/
  0x08,0x00,
  0x45,
  0x00,
  //  0x00,0x54, /* length */
  0x01,0x1c, /* length */
  0x00,0x00,
  0x40,
  0x00,
  0x40,
  0x01,
  0xb5,0x8f,
  OUR_IP_BYTES, /* Source IP */
  BCAST_DEST_IP_BYTES, /* Dest. IP */
  /* ICMP Message body */
  0x08,0x00,0x7d,0x65,0xa7,0x20,0x00,0x01,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,
  15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,
  40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,
  65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,
  90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,
  111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,
  130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,
  149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,
  168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,
  187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,
  206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,
  225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,
  244,245,246,247,248,249,250,251,252,253,254,255};
 
 
char big_ping_packet[] =  {
  0x00, 0x24, 0xe8, 0x91, 0x7c, 0x0d, /*DST MAC*/
  //0xff,0xff,0xff,0xff,0xff,0xff, /*SRC MAC*/
  0x00, 0x12, 0x34, 0x56, 0x78, 0x9a, /*SRC MAC*/
  0x08,0x00,
  0x45,
  0x00,
  0x05,0xdc, /* length */
  0x00,0x00,
  0x40,
  0x00,
  0x40,
  0x01,
  0xea,0xcb,   /* Header checksum */
  OUR_IP_BYTES, /* Source IP */
  DEST_IP_BYTES, /* Dest. IP */
  /* ICMP Message body */
  0x08,0x00, /* Type */
  0x04,0x48, /* ICMP checksum */
  0x02,0x00, /* Identifier */
  0x3a,0x00, /* sequence number */
  0x61,0x62,0x63,0x64,0x65,0x66,0x67,
  0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,0x74,0x75,0x76,
  0x77,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,
  0x6f,0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x61,0x62,0x63,0x64,0x65,0x66,
  0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,0x74,0x75,
  0x76,0x77,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,
  0x6e,0x6f,0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x61,0x62,0x63,0x64,0x65,
  0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,0x70,0x71,0x72,0x73,0x74,
  0x75,0x76,0x77,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,
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/* This should be 98 bytes big */
char ping_packet[] = {
  0x00, 0x24, 0xe8, 0x91, 0x7c, 0x0d, /*DST MAC*/
  //0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /*DST MAC*/
  0x00, 0x12, 0x34, 0x56, 0x78, 0x9a, /*SRC MAC*/
  0x08, 0x00, /*TYPE*/
  /* IP */
  0x45, /* Version, header length*/
  0x00, /* Differentiated services field */
  0x00, 0x54, /* Total length */
  0x00, 0x00, /* Identification */
  0x40, /* Flags */
  0x00, /* Fragment offset */
  0x40, /* Time to live */
  0x01, /* Protocol (0x01 = ICMP */
  0xf0, 0x53, /* Header checksum */
  //0xc0, 0xa8, 0x64, 0xDE, /* Source IP */
  OUR_IP_BYTES, /* Source IP */
  DEST_IP_BYTES, /* Dest. IP */
  /* ICMP Message body */
  0x08, 0x00, 0x9a, 0xd4, 0xc8, 0x18, 0x00, 0x01, 0xd9, 0x8c, 0x54,
  0x4a, 0x7b, 0x37, 0x01, 0x00, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
  0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
  0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
  0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e,
  0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37
};
 
void send_test_packet()
{
 
  /*Send packet */
  //tx_packet((void*) ping_packet, 102);
  tx_packet((void*) broadcast_ping_packet, 102);
 
}
 
 
/* The interrupt handler.
*/
void
oeth_interrupt(void)
{
 
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
 
        uint int_events;
        int  serviced;
 
        serviced = 0;
 
        /* Get the interrupt events that caused us to be here.
         */
        int_events = regs->int_src;
        regs->int_src = int_events;
 
 
        /* Indicate busy */
        if (int_events & OETH_INT_BUSY)
        {
                printf("\tBusy flag\n");
                /*
                  printf("\n=tx_ | %x | %x | %x | %x | %x | %x | %x | %x\n",
                  ((oeth_bd *)(OETH_BD_BASE))->len_status,
                  ((oeth_bd *)(OETH_BD_BASE+8))->len_status,
                  ((oeth_bd *)(OETH_BD_BASE+16))->len_status,
                  ((oeth_bd *)(OETH_BD_BASE+24))->len_status,
                  ((oeth_bd *)(OETH_BD_BASE+32))->len_status,
                  ((oeth_bd *)(OETH_BD_BASE+40))->len_status,
                  ((oeth_bd *)(OETH_BD_BASE+48))->len_status,
                  ((oeth_bd *)(OETH_BD_BASE+56))->len_status);
                */
                printf("=rx_ | %x | %x | %x | %x | %x | %x | %x | %x\n",
                       ((oeth_bd *)(OETH_BD_BASE+64))->len_status,
                       ((oeth_bd *)(OETH_BD_BASE+64+8))->len_status,
                       ((oeth_bd *)(OETH_BD_BASE+64+16))->len_status,
                       ((oeth_bd *)(OETH_BD_BASE+64+24))->len_status,
                       ((oeth_bd *)(OETH_BD_BASE+64+32))->len_status,
                       ((oeth_bd *)(OETH_BD_BASE+64+40))->len_status,
                       ((oeth_bd *)(OETH_BD_BASE+64+48))->len_status,
                       ((oeth_bd *)(OETH_BD_BASE+64+56))->len_status);
 
                printf("=int | rxc %d | txc %d | txb %d | txe %d | rxb %d | rxe %d | busy %d\n",
                       (int_events & OETH_INT_RXC) > 0,
                       (int_events & OETH_INT_TXC) > 0,
                       (int_events & OETH_INT_TXB) > 0,
                       (int_events & OETH_INT_TXE) > 0,
                       (int_events & OETH_INT_RXF) > 0,
                       (int_events & OETH_INT_RXE) > 0,
                       (int_events & OETH_INT_BUSY) > 0);
        }/*
        else
                printf("=int | rxc %d | txc %d | txb %d | txe %d | rxb %d | rxe %d | busy %d\n",
                       (int_events & OETH_INT_RXC) > 0,
                       (int_events & OETH_INT_TXC) > 0,
                       (int_events & OETH_INT_TXB) > 0,
                       (int_events & OETH_INT_TXE) > 0,
                       (int_events & OETH_INT_RXF) > 0,
                       (int_events & OETH_INT_RXE) > 0,
                       (int_events & OETH_INT_BUSY) > 0);
             */
        /* Handle receive event in its own function.
         */
        if (int_events & (OETH_INT_RXF | OETH_INT_RXE)) {
                serviced |= 0x1;
                if (print_ethmac_debug_reg)
                        oeth_print_wbdebug();
                oeth_rx();
                if (print_ethmac_debug_reg)
                        oeth_print_wbdebug();
        }
 
        /* Handle transmit event in its own function.
         */
        if (int_events & (OETH_INT_TXB | OETH_INT_TXE)) {
                if (print_ethmac_debug_reg)
                        oeth_print_wbdebug();
                serviced |= 0x2;
                oeth_tx();
                serviced |= 0x2;
                if (print_ethmac_debug_reg)
                        oeth_print_wbdebug();
 
        }
 
        return;
}
 
// ARP stuff
 
typedef unsigned long           IPaddr_t;
 
/*
*       Ethernet header
*/
typedef struct {
  unsigned char         et_dest[6];     /* Destination node             */
  unsigned char         et_src[6];      /* Source node                  */
  unsigned short                et_protlen;     /* Protocol or length   */
  unsigned char         et_dsap;        /* 802 DSAP                     */
  unsigned char         et_ssap;        /* 802 SSAP                     */
  unsigned char         et_ctl;         /* 802 control                  */
  unsigned char         et_snap1;       /* SNAP                         */
  unsigned char         et_snap2;
  unsigned char         et_snap3;
  unsigned short                et_prot;        /* 802 protocol         */
} Ethernet_t;
 
#define ETHER_HDR_SIZE  14              /* Ethernet header size         */
#define E802_HDR_SIZE   22              /* 802 ethernet header size     */
#define PROT_IP         0x0800          /* IP protocol                  */
#define PROT_ARP        0x0806          /* IP ARP protocol              */
#define PROT_RARP       0x8035          /* IP ARP protocol              */
 
 
/*
 *      Internet Protocol (IP) header.
 */
typedef struct {
        unsigned char           ip_hl_v;        /* header length and version*/
        unsigned char           ip_tos;         /* type of service          */
        unsigned short          ip_len;         /* total length             */
        unsigned short          ip_id;          /* identification           */
        unsigned short          ip_off;         /* fragment offset field    */
        unsigned char           ip_ttl;         /* time to live             */
        unsigned char           ip_p;           /* protocol                 */
        unsigned short          ip_sum;         /* checksum                 */
        IPaddr_t        ip_src;         /* Source IP address            */
        IPaddr_t        ip_dst;         /* Destination IP address       */
        unsigned short          udp_src;        /* UDP source port      */
        unsigned short          udp_dst;        /* UDP destination port */
        unsigned short          udp_len;        /* Length of UDP packet */
        unsigned short          udp_xsum;       /* Checksum             */
} IP_t;
 
#define IP_HDR_SIZE_NO_UDP      (sizeof (IP_t) - 8)
#define IP_HDR_SIZE             (sizeof (IP_t))
 
#define IPPROTO_ICMP     1      /* Internet Control Message Protocol    */
#define IPPROTO_UDP     17      /* User Datagram Protocol               */
 
 
/*
 * ICMP stuff (just enough to handle (host) redirect messages)
 */
#define ICMP_REDIRECT           5       /* Redirect (change route)      */
 
/* Codes for REDIRECT. */
#define ICMP_REDIR_NET          0        /* Redirect Net                 */
#define ICMP_REDIR_HOST         1       /* Redirect Host                */
 
#define ICMP_TYPE_ECHO_REPLY          0x00
#define ICMP_TYPE_ECHO_REQ          0x08
 
unsigned char ip_reply_packet[0x600] __attribute__ ((aligned (4))); // Save space for a full ICMP reply packet
 
typedef struct {
        unsigned char           type;
        unsigned char           code;
        unsigned short          checksum;
        union {
                struct {
                        unsigned short  id;
                        unsigned short  sequence;
                } echo;
                unsigned long   gateway;
                struct {
                        unsigned short  __unused;
                        unsigned short  mtu;
                } frag;
        } un;
} ICMP_t;
 
// From http://lkml.indiana.edu/hypermail/linux/kernel/9612.3/0060.html
unsigned short calculate_checksum(char* dats, unsigned int len)
{
  unsigned int itr;
  unsigned long accum = 0;
  unsigned long longsum;
 
  // Sum all pairs of data
  for(itr=0;itr<(len & ~0x1);itr+=2)
    accum += (unsigned long)(((dats[itr]<<8)&0xff00)|(dats[itr+1]&0x00ff));
 
  if (len & 0x1) // Do leftover
    accum += (unsigned long) ((dats[itr-1]<<8)&0xff00);
 
  longsum = (unsigned long) (accum & 0xffff);
  longsum += (unsigned long) (accum >> 16); // Sum the carries
  longsum += (longsum >> 16);
  return (unsigned short)((longsum ^ 0xffff) & 0xffff);
 
}
 
void
packet_check_icmp_header(void * pkt)
{
  Ethernet_t * eth_pkt;
  IP_t * ip;
  ICMP_t * icmp;
 
  unsigned int zero = 0;
 
  eth_pkt = (Ethernet_t *) pkt;
 
  // Check it's for our MAC
  char* eth_pkt_dst_mac = (char*) eth_pkt;
  if (!(
        ((eth_pkt_dst_mac[0] == (char) ETH_MACADDR0) &&  // Either our MAC
         (eth_pkt_dst_mac[1] == (char) ETH_MACADDR1) &&
         (eth_pkt_dst_mac[2] == (char) ETH_MACADDR2) &&
         (eth_pkt_dst_mac[3] == (char) ETH_MACADDR3) &&
         (eth_pkt_dst_mac[4] == (char) ETH_MACADDR4) &&
         (eth_pkt_dst_mac[5] == (char) ETH_MACADDR5)) ||
        ((eth_pkt_dst_mac[0] == (char) 0xff) &&          // or broadcast MAC
         (eth_pkt_dst_mac[1] == (char) 0xff) &&
         (eth_pkt_dst_mac[2] == (char) 0xff) &&
         (eth_pkt_dst_mac[3] == (char) 0xff) &&
         (eth_pkt_dst_mac[4] == (char) 0xff) &&
         (eth_pkt_dst_mac[5] == (char) 0xff))
        )
      )
 
    return ;
 
  // Check it's an IP packet
  if (!(eth_pkt->et_protlen == PROT_IP))
    return ;
 
  pkt += ETHER_HDR_SIZE; // Skip eth header stuff
 
  ip = (IP_t*) pkt;
 
  // Check if this is an ICMP packet
  if (!(ip->ip_p == IPPROTO_ICMP))
    return ;
 
  // Check if this is for our IP, get pointer to the DST IP part of IP header
  // which is end of IP section - 4 bytes
  char * internet_protocol_adr = ((unsigned char*)ip + (IP_HDR_SIZE_NO_UDP-4));
 
  if (!((internet_protocol_adr[0] == our_ip[0]) &&
        (internet_protocol_adr[1] == our_ip[1]) &&
        (internet_protocol_adr[2] == our_ip[2]) &&
        (internet_protocol_adr[3] == our_ip[3])))
    return ;
 
  pkt += IP_HDR_SIZE_NO_UDP;
 
  icmp = (ICMP_t*) pkt;
 
  // Currently we only support replying to echo (ping) requests
 
  // Check for ICMP echo request type
  if (!(icmp->type == ICMP_TYPE_ECHO_REQ))
    return;
 
  // Skip forward to the target I.P address
  if (packet_inspect_debug)
          printf("Ping packet\n");
 
  // Go ahead and construct a response packet
  // Setup pointers
  Ethernet_t * reply_pkt  = (Ethernet_t *) &ip_reply_packet[0];
  IP_t       * reply_IP   = (IP_t*)        &ip_reply_packet[ETHER_HDR_SIZE];
  ICMP_t     * reply_ICMP = (ICMP_t*)      &ip_reply_packet[ETHER_HDR_SIZE+
                                                            IP_HDR_SIZE_NO_UDP];
  // Setup Ethernet header
  // Copy source MAC to destination MAC
  memcpy( (void*)&reply_pkt->et_dest , (void*)&eth_pkt->et_src , 6);
  reply_pkt->et_src[0] = ETH_MACADDR0;
  reply_pkt->et_src[1] = ETH_MACADDR1;
  reply_pkt->et_src[2] = ETH_MACADDR2;
  reply_pkt->et_src[3] = ETH_MACADDR3;
  reply_pkt->et_src[4] = ETH_MACADDR4;
  reply_pkt->et_src[5] = ETH_MACADDR5;
  reply_pkt->et_protlen = PROT_IP;
 
  // IP header
  reply_IP->ip_hl_v = 0x45; // version 4, 20 byte long header, not 100% on this!
  reply_IP->ip_tos = 0x00 ; // ToS (DSCP) - usually used for QoS, set to 0 
  unsigned short ip_indicated_length;
  // First copy total length indicated in received IP header to a variable, we
  // need it again later...
  memcpy ((void*)&ip_indicated_length, (void*)&ip->ip_len, 2);
  // Now copy into reply IP packet
  memcpy ((void*)&reply_IP->ip_len, (void*)&ip_indicated_length, 2);
  memcpy ((void*)&reply_IP->ip_id, (void*)&ip->ip_id, 2); // Copy ID
  reply_IP->ip_ttl = 0x40; // Packet TTL - 64, typical value
  reply_IP->ip_p = IPPROTO_ICMP; // Duh, this is an ICMP echo reply
  // Clear header checksum for now  
 
  memcpy ((void*)&reply_IP->ip_sum, (void*)&zero, 2);
  memcpy ((void*)&reply_IP->ip_src, (void*)&our_ip[0], 4); // Copy in our IP
  // "...return to sender... budupbadah address ....KNOWN ..."
  // WTF this memcpy() fails with alignment error...(?!?!)
  //memcpy (&reply_IP->ip_dst, &ip->ip_src, sizeof(IPaddr_t));
  //...OK then, do it manually.....
  unsigned char *ptr1, *ptr2;
  ptr1 = &reply_IP->ip_dst; ptr2 = &ip->ip_src;
  ptr1[0] = ptr2[0];
  ptr1[1] = ptr2[1];
  ptr1[2] = ptr2[2];
  ptr1[3] = ptr2[3];
 
  // Now calculate the CRC, probably move this to a fuction....
  unsigned short ip_sum = 0; // Initialise checksum value to 0
  int itr;
  char* sum_data_ptr = (char*)reply_IP;
  ip_sum = calculate_checksum(sum_data_ptr,IP_HDR_SIZE_NO_UDP);
  /*
  for(itr=0;itr<IP_HDR_SIZE_NO_UDP;itr+=2)
    ip_sum += (((sum_data_ptr[itr]<<8)&0xff00)|(sum_data_ptr[itr+1]&0x00ff));
  while (ip_sum>>16)
    ip_sum = (ip_sum & 0xffff) + (ip_sum>>16);
  ip_sum = ~ip_sum;
  */
 
  memcpy ((void*)&reply_IP->ip_sum, (void*)&ip_sum, 2);
 
  //
  // Now construct ICMP part of packet
  //
  reply_ICMP->type = ICMP_TYPE_ECHO_REPLY; // ping response type
  reply_ICMP->code = icmp->code; // ICMP code same as sender (is this right?)
 
  // Clear ICMP checksum for now  
  memcpy ((void*)&reply_ICMP->checksum, (void*)&zero, 2);
 
  //
  // Simply copy in the data from the received packet
  // Figure out how much there is after the checksum
  // It should be :
  // length_from_received_IP_header - IP_header_length - initial_ICMP_packet_dat
  // 
  unsigned long icmp_data_length = ip_indicated_length - IP_HDR_SIZE_NO_UDP - 4;
  memcpy ((void*)&reply_ICMP->un,(void*)&icmp->un, icmp_data_length);
 
  // Now calculate checksum for ICMP data
  unsigned short icmp_sum = 0;
  sum_data_ptr = (char*)reply_ICMP;
  icmp_sum = calculate_checksum(sum_data_ptr,icmp_data_length+4);
 
  memcpy ((void*)&reply_ICMP->checksum, (void*)&icmp_sum, 2);
 
  // All done!
 
  tx_packet((void*)ip_reply_packet,ETHER_HDR_SIZE+ip_indicated_length);
 
}
 
 
 
/*
*       Address Resolution Protocol (ARP) header.
*/
typedef struct
{
  unsigned short                ar_hrd; /* Format of hardware address   */
#   define ARP_ETHER        1           /* Ethernet  hardware address   */
  unsigned short                ar_pro; /* Format of protocol address   */
  unsigned char         ar_hln;         /* Length of hardware address   */
  unsigned char         ar_pln;         /* Length of protocol address   */
  unsigned short                ar_op;  /* Operation                    */
#   define ARPOP_REQUEST    1           /* Request  to resolve  address */
#   define ARPOP_REPLY      2           /* Response to previous request */
 
#   define RARPOP_REQUEST   3           /* Request  to resolve  address */
#   define RARPOP_REPLY     4           /* Response to previous request */
 
  /*
  * The remaining fields are variable in size, according to
  * the sizes above, and are defined as appropriate for
  * specific hardware/protocol combinations.
  */
  unsigned char         ar_data[0];
#if 0
  unsigned char         ar_sha[];       /* Sender hardware address      */
  unsigned char         ar_spa[];       /* Sender protocol address      */
  unsigned char         ar_tha[];       /* Target hardware address      */
  unsigned char         ar_tpa[];       /* Target protocol address      */
#endif /* 0 */
} ARP_t;
 
#define ARP_HDR_SIZE    (8+20)          /* Size assuming ethernet       */
 
char arp_reply_packet[(ETHER_HDR_SIZE + ARP_HDR_SIZE)];
 
void
packet_check_arp_header(void * pkt)
{
  Ethernet_t * eth_pkt;
 
  ARP_t * arp;
 
  //printf("packet_check_arp_header: pkt data at 0x%.8x\n",(unsigned long) pkt);
  eth_pkt = (Ethernet_t *) pkt;
 
  if (eth_pkt->et_protlen == 0x0806)
    {
      // Is an ARP request
      // Check the IP
      pkt += ETHER_HDR_SIZE; // Skip eth header stuff
      //printf("Is ARP protocol\npkt header now at 0x%.8x\n",pkt);
 
      arp = (ARP_t*) pkt;
 
      if (arp->ar_hrd == ARP_ETHER && arp->ar_op == ARPOP_REQUEST)
        {
                // Skip forward to the target I.P address
                if (packet_inspect_debug)
                        printf("ARP packet\n");
 
          char * internet_protocol_adr = (((unsigned long)&arp->ar_data[0]) +
                                          (arp->ar_hln * 2) + (arp->ar_pln));
 
          //printf("Is ARP ethernet request\ncheck adr at 0x%.8x\n",
          // internet_protocol_adr);
          if ((internet_protocol_adr[0] == our_ip[0]) &&
              (internet_protocol_adr[1] == our_ip[1]) &&
              (internet_protocol_adr[2] == our_ip[2]) &&
              (internet_protocol_adr[3] == our_ip[3]))
            {
              //printf("Got valid ARP request\n");
              // Send ARP reply
 
              Ethernet_t * reply_pkt = (Ethernet_t *)&arp_reply_packet[0];
              ARP_t * reply_arp = (ARP_t*)&arp_reply_packet[ETHER_HDR_SIZE];
              memcpy( (void*)&reply_pkt->et_dest , (void*)&eth_pkt->et_src , 6);
              reply_pkt->et_src[0] = ETH_MACADDR0;
              reply_pkt->et_src[1] = ETH_MACADDR1;
              reply_pkt->et_src[2] = ETH_MACADDR2;
              reply_pkt->et_src[3] = ETH_MACADDR3;
              reply_pkt->et_src[4] = ETH_MACADDR4;
              reply_pkt->et_src[5] = ETH_MACADDR5;
              reply_pkt->et_protlen = 0x0806;
              // ARP part of packet           
              reply_arp->ar_hrd = ARP_ETHER;
              reply_arp->ar_pro = 0x0800; // IP Protocol
              reply_arp->ar_hln = 0x06;
              reply_arp->ar_pln = 0x04;
              reply_arp->ar_op = ARPOP_REPLY;
              // My MAC
              memcpy( (void*)&reply_arp->ar_data[0] ,
                      (void*)&reply_pkt->et_src , 6);
              // My IP
              memcpy( (void*)&reply_arp->ar_data[6] , (void*)&our_ip , 4);
              // Their MAC
              memcpy( (void*)&reply_arp->ar_data[10] ,
                      (void*)&eth_pkt->et_src , 6);
              // Their IP
              char * their_internet_protocol_adr =
                (((unsigned long)&arp->ar_data[0]) + arp->ar_hln );
              memcpy( (void*)&reply_arp->ar_data[16] ,
                      (void*)&their_internet_protocol_adr[0] , 4);
 
              tx_packet((void*)arp_reply_packet,(ETHER_HDR_SIZE+ARP_HDR_SIZE) );
 
            }
        }
    }
}
 
 
 
static void
oeth_rx(void)
{
        volatile oeth_regs *regs;
        regs = (oeth_regs *)(OETH_REG_BASE);
 
        volatile oeth_bd *rx_bdp;
        int     pkt_len, i;
        int     bad = 0;
 
        rx_bdp = ((oeth_bd *)OETH_BD_BASE) + OETH_TXBD_NUM;
 
        if (print_packet_contents)
                printf("rx ");
 
        /* Find RX buffers marked as having received data */
        for(i = 0; i < OETH_RXBD_NUM; i++)
        {
                /* Looking for NOT empty buffers desc. */
                if(!(rx_bdp[i].len_status & OETH_RX_BD_EMPTY)){
                        /* Check status for errors.
                         */
                        if (rx_bdp[i].len_status & (OETH_RX_BD_TOOLONG |
                                                    OETH_RX_BD_SHORT)) {
                                bad = 1;
                        }
                        if (rx_bdp[i].len_status & OETH_RX_BD_DRIBBLE) {
                                bad = 1;
                        }
                        if (rx_bdp[i].len_status & OETH_RX_BD_CRCERR) {
                                bad = 1;
                        }
                        if (rx_bdp[i].len_status & OETH_RX_BD_OVERRUN) {
                                bad = 1;
                        }
                        if (rx_bdp[i].len_status & OETH_RX_BD_MISS) {
 
                        }
                        if (rx_bdp[i].len_status & OETH_RX_BD_LATECOL) {
                                bad = 1;
                        }
 
                        if (bad) {
                                printf("RXE: 0x%x\n",rx_bdp[i].len_status &
                                       OETH_RX_BD_STATS);
                                rx_bdp[i].len_status &= ~OETH_RX_BD_STATS;
                                rx_bdp[i].len_status |= OETH_RX_BD_EMPTY;
 
                                if (print_packet_contents)
                                {
                                        oeth_print_packet(i, rx_bdp[i].addr,
                                                          rx_bdp[i].len_status
                                                          >> 16);
                                        printf("\t end of packet\n\n");
                                }
 
                                bad = 0;
                                continue;
                        }
                        else {
 
                                /* Process the incoming frame.
                                 */
                                pkt_len = rx_bdp[i].len_status >> 16;
 
                                /* Do something here with the data - copy it
                                   into userspace, perhaps. */
                                // See if it's an ARP packet
                                packet_check_arp_header((void*)rx_bdp[i].addr);
                                // See if it's an ICMP echo request
                                packet_check_icmp_header((void*)rx_bdp[i].addr);
                                if (print_packet_contents)
                                {
                                        oeth_print_packet(i, rx_bdp[i].addr,
                                                          rx_bdp[i].len_status
                                                          >> 16);
                                        printf("\t end of packet\n\n");
                                }
                                /* finish up */
                                /* Clear stats */
                                rx_bdp[i].len_status &= ~OETH_RX_BD_STATS;
                                 /* Mark RX BD as empty */
                                rx_bdp[i].len_status |= OETH_RX_BD_EMPTY;
 
                                oeth_transmit_pause(); //try this!
 
 
                        }
                }
        }
}
 
 
 
static void
oeth_tx(void)
{
        volatile oeth_bd *tx_bd;
        int i;
        if (print_packet_contents)
                printf("tx");
 
        tx_bd = (volatile oeth_bd *)OETH_BD_BASE; /* Search from beginning*/
 
        /* Go through the TX buffs, search for one that was just sent */
        for(i = 0; i < OETH_TXBD_NUM; i++)
        {
                /* Looking for buffer NOT ready for transmit. and IRQ enabled */
                if( (!(tx_bd[i].len_status & (OETH_TX_BD_READY))) &&
                    (tx_bd[i].len_status & (OETH_TX_BD_IRQ)) )
                {
                        /* Single threaded so no chance we have detected a
                           buffer that has had its IRQ bit set but not its
                           BD_READ flag. Maybe this won't work in linux */
                        tx_bd[i].len_status &= ~OETH_TX_BD_IRQ;
 
                        /* Probably good to check for TX errors here */
                        // Check if either carrier sense lost or colission 
                        // indicated
                        if (tx_bd[i].len_status & OETH_TX_BD_STATS)
                                printf("TXER: 0x%x\n",
                                       (tx_bd[i].len_status &OETH_TX_BD_STATS));
 
                        if (print_packet_contents)
                                printf("T%d\n",i);
                }
        }
        return;
}
 
 
int main ()
{
 
        print_packet_contents = 0; // Default to not printing packet contents.
        packet_inspect_debug = 0;
        print_ethmac_debug_reg = 0;
 
        /* Initialise vector handler */
        int_init();
 
        /* Install ethernet interrupt handler, it is enabled here too */
        int_add(ETH0_IRQ, oeth_interrupt, 0);
 
        /* Enable interrupts */
        cpu_enable_user_interrupts();
 
        last_char=0; /* Variable init for spin_cursor() */
        next_tx_buf_num = 4; /* init for tx buffer counter */
 
        uart_init(DEFAULT_UART); // init the UART before we can printf
        printf("\n\teth ping program\n\n");
        printf("\n\tboard IP: %d.%d.%d.%d\n",our_ip[0]&0xff,our_ip[1]&0xff,
               our_ip[2]&0xff,our_ip[3]&0xff);
 
        ethmac_setup(); /* Configure MAC, TX/RX BDs and enable RX and TX in
                           MODER */
 
        //scan_ethphys(); /* Scan MIIM bus for PHYs */
        //ethphy_init(); /* Attempt reset and configuration of PHY via MIIM */
        //ethmac_scanstatus(); /* Enable scanning of status register via MIIM */
 
        /* Loop, monitoring user input from TTY */
        while(1)
        {
                char c;
 
                while(!uart_check_for_char(DEFAULT_UART))
                {
 
                        spin_cursor();
 
                        if (print_ethmac_debug_reg)
                                oeth_print_wbdebug();
                }
 
                c = uart_getc(DEFAULT_UART);
 
                if (c == 's')
                        tx_packet((void*) ping_packet, 98);
                else if (c == 'S')
                        tx_packet((void*)big_ping_packet, 1514);
                else if (c == 'h')
                        scan_ethphys();
                else if (c == 'i')
                        ethphy_init();
                else if (c == 'c')
                        oeth_ctrlmode_switch();
                else if (c == 'P')
                {
                        print_packet_contents = print_packet_contents ? 0 : 1;
                        if (print_packet_contents)
                                printf("Enabling packet dumping\n");
                        else
                                printf("Packet dumping disabled\n");
                }
                else if (c == 'p')
                        oeth_printregs();
                else if (c == 'a')
                        ethphy_print_status(ethphy_found);
                else if (c >= '0' && c <= '9')
                        scan_ethphy(c - 0x30);
                else if (c == 'r')
                {
                        ethphy_reset(ethphy_found);
                        printf("PHY reset\n");
                }
                else if (c == 'R')
                {
                        //oeth_reset_tx_bd_pointer();
                        ethmac_setup();
                        printf("MAC reset\n");
                }
                else if (c == 'n')
                        ethphy_reneg(ethphy_found);
                else if (c == 'N')
                        ethphy_toggle_autoneg(ethphy_found);
                else if (c == 'm')
                        ethmac_togglehugen();
                else if (c == 't')
                        ethphy_set_10mbit(ethphy_found);
                else if (c == 'H')
                        ethphy_set_100mbit(ethphy_found);
                else if ( c == 'b' )
                {
                        printf("\n\t---\n");
                        oeth_dump_bds();
                        printf("\t---\n");
                }
 
                else if ( c == 'B' )
                {
                        tx_packet((void*) broadcast_ping_packet, 298);
                }
                else if (c == 'u' )
                        oeth_transmit_pause();
                else if (c == 'd' )
                {
                        oeth_print_wbdebug();
                        print_ethmac_debug_reg = !print_ethmac_debug_reg;
                }
                else if (c == 'D')
                {
                        marvell_phy_toggle_delay();
                }
                else if (c == 'v' )
                {
                        if (packet_inspect_debug)
                                printf("Disabling ");
                        else
                                printf("Enabling ");
 
                        printf("packet type announcments\n");
 
                        packet_inspect_debug = !packet_inspect_debug;
                }
                else if ( c == 'o' )
                        oeth_toggle_promiscuous();
                else if (c == 'L')
                        ethphy_toggle_loopback();
                else if (c == 'g')
                        ethphy_toggle_gigadvertise();
 
        }
 
}

Line No.	Rev	Author	Line
1	349	julius	`//////////////////////////////////////////////////////////////////////`
2			`//// ////`
3	567	julius	`//// OpenCores 10/100 Ethernet MAC test and diagnosis program ////`
4	349	julius	`//// ////`
5			`//// Description ////`
6			`//// Controllable ping program - also responds to ARP requests ////`
7			`//// ////`
8			`//// Author(s): ////`
9	567	julius	`//// - Julius Baxter, julius@opencores.org ////`
10			`//// Parts from old Linux open_eth driver. ////`
11	349	julius	`//// ////`
12			`//// ////`
13			`//////////////////////////////////////////////////////////////////////`
14			`//// ////`
15	567	julius	`//// Copyright (C) 2009,2011 Authors and OPENCORES.ORG ////`
16	349	julius	`//// ////`
17			`//// This source file may be used and distributed without ////`
18			`//// restriction provided that this copyright statement is not ////`
19			`//// removed from the file and that any derivative work contains ////`
20			`//// the original copyright notice and the associated disclaimer. ////`
21			`//// ////`
22			`//// This source file is free software; you can redistribute it ////`
23			`//// and/or modify it under the terms of the GNU Lesser General ////`
24			`//// Public License as published by the Free Software Foundation; ////`
25			`//// either version 2.1 of the License, or (at your option) any ////`
26			`//// later version. ////`
27			`//// ////`
28			`//// This source is distributed in the hope that it will be ////`
29			`//// useful, but WITHOUT ANY WARRANTY; without even the implied ////`
30			`//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////`
31			`//// PURPOSE. See the GNU Lesser General Public License for more ////`
32			`//// details. ////`
33			`//// ////`
34			`//// You should have received a copy of the GNU Lesser General ////`
35			`//// Public License along with this source; if not, download it ////`
36			`//// from http://www.opencores.org/lgpl.shtml ////`
37			`//// ////`
38			`//////////////////////////////////////////////////////////////////////`
39
40	408	julius	`#include "cpu-utils.h"`
41	349	julius	`#include "board.h"`
42			`#include "int.h"`
43			`#include "uart.h"`
44	409	julius	`#include "ethmac.h"`
45	349	julius	`#include "printf.h"`
46			`#include "eth-phy-mii.h"`
47
48	530	julius
49	349	julius	`volatile unsigned tx_done;`
50			`static int next_tx_buf_num;`
51
52	496	julius	`#define OUR_IP_BYTES 0xc0,0xa8,0x64,0x9b // 192.168.100.155`
53			`#define OUR_IP_LONG 0xc0a8649b`
54	349	julius
55	496	julius	`//#define OUR_IP_BYTES 0xc0,0xa8,0x0,0x5a // 192.168.0.90`
56			`//#define OUR_IP_LONG 0xc0a8005a`
57	408	julius
58	411	julius	`//#define OUR_IP_BYTES 0xc0,0xa8,0x1,0x22 // 192.168.1.34`
59			`//#define OUR_IP_LONG 0xc0a80122`
60
61	479	julius	`//#define OUR_IP_BYTES 0xc0,0xa8,0x1,0x2 // 192.168.1.2`
62			`//#define OUR_IP_LONG 0xc0a80102`
63	408	julius
64	415	julius	`//#define OUR_IP_BYTES 0xac,0x1e,0x0,0x2 // 172.30.0.2`
65			`//#define OUR_IP_LONG 0xac1e0002`
66
67	530	julius	`//#define OUR_IP_BYTES 0xa,0x0,0x0,0x14 // 10.0.0.20`
68			`//#define OUR_IP_LONG 0x0a000014`
69
70
71	349	julius	`static char our_ip[4] = {OUR_IP_BYTES};`
72
73	496	julius	`#define DEST_IP_BYTES 0xc0,0xa8,0x64,0x69 // 192 .168.100.105`
74	479	julius	`//#define DEST_IP_BYTES 0xc0,0xa8,0x01,0x08 // 192 .168.1.8`
75	496	julius	`//#define DEST_IP_BYTES 0xc0,0xa8,0x00,0x0f // 192 .168.0.15`
76	415	julius	`//#define DEST_IP_BYTES 0xac,0x1e,0x0,0x01 // 172.30.0.1`
77	530	julius	`//#define DEST_IP_BYTES 0xa,0x0,0x0,0x1 // 10.0.0.1`
78	349	julius
79	496	julius	`#define BCAST_DEST_IP_BYTES 0xc0,0xa8,0x64,0xff // 192.168.100.255`
80			`//#define BCAST_DEST_IP_BYTES 0xc0,0xa8,0x01,0xff // 192.168.1.255`
81			`//#define BCAST_DEST_IP_BYTES 0xc0,0xa8,0x00,0xff // 192.168.0.255`
82	530	julius	`//#define BCAST_DEST_IP_BYTES 0xa,0x0,0x0,0xff // 10.0.0.255`
83	435	julius
84	349	julius	`/* Functions in this file */`
85			`void ethmac_setup(void);`
86			`void oeth_printregs(void);`
87			`void ethphy_init(void);`
88			`void oeth_dump_bds();`
89			`/* Interrupt functions */`
90			`void oeth_interrupt(void);`
91			`static void oeth_rx(void);`
92			`static void oeth_tx(void);`
93	411	julius	`/* Function to calculate checksum of ping responses we send */`
94			`unsigned short calculate_checksum(char* dats, unsigned int len) ;`
95	349	julius
96	411	julius	`// Global used to control whether we print out packets as we receive them`
97			`int print_packet_contents;`
98	530	julius	`int packet_inspect_debug;`
99			`int print_ethmac_debug_reg;`
100	349	julius
101			`/* Let the ethernet packets use a space beginning here for buffering */`
102			`#define ETH_BUFF_BASE 0x01000000`
103
104
105			`#define RXBUFF_PREALLOC 1`
106			`#define TXBUFF_PREALLOC 1`
107			`//#undef RXBUFF_PREALLOC`
108			`//#undef TXBUFF_PREALLOC`
109
110			`/* The transmitter timeout`
111			`*/`
112			`#define TX_TIMEOUT (2*HZ)`
113
114			`/* Buffer number (must be 2^n)`
115			`*/`
116	530	julius	`#define OETH_RXBD_NUM 124`
117			`#define OETH_TXBD_NUM 4`
118	349	julius	`#define OETH_RXBD_NUM_MASK (OETH_RXBD_NUM-1)`
119			`#define OETH_TXBD_NUM_MASK (OETH_TXBD_NUM-1)`
120
121			`/* Buffer size`
122			`*/`
123			`#define OETH_RX_BUFF_SIZE 2048`
124			`#define OETH_TX_BUFF_SIZE 2048`
125
126			`/* Buffer size (if not XXBUF_PREALLOC`
127			`*/`
128			`#define MAX_FRAME_SIZE 0x600`
129			`//#define MAX_FRAME_SIZE 2500`
130
131			`/* The buffer descriptors track the ring buffers.`
132			`*/`
133			`struct oeth_private {`
134			`//struct sk_buff* rx_skbuff[OETH_RXBD_NUM];`
135			`//struct sk_buff* tx_skbuff[OETH_TXBD_NUM];`
136
137			`unsigned short tx_next;/* Next buffer to be sent */`
138			`unsigned short tx_last;/* Next buffer to be checked if packet sent */`
139			`unsigned short tx_full;/* Buffer ring fuul indicator */`
140			`unsigned short rx_cur; /* Next buffer to be checked if packet received */`
141
142			`oeth_regs regs; / Address of controller registers. */`
143			`oeth_bd rx_bd_base; / Address of Rx BDs. */`
144			`oeth_bd tx_bd_base; / Address of Tx BDs. */`
145
146			`// struct net_device_stats stats;`
147			`};`
148
149	567	julius	`int ethphy_found = -1;`
150
151	530	julius	`#define PRINT_BIT_NAME(bit,name) printf("%02d:"name" %d\n",bit,!!(reg&(1<<bit)))`
152			`void oeth_print_moder(unsigned long reg)`
153			`{`
154			`PRINT_BIT_NAME(16,"RECSMALL");`
155			`PRINT_BIT_NAME(15,"PAD");`
156			`PRINT_BIT_NAME(14,"HUGEN");`
157			`PRINT_BIT_NAME(13,"CRCEN");`
158			`PRINT_BIT_NAME(12,"DLYCRCEN");`
159			`PRINT_BIT_NAME(10,"FULLD");`
160			`PRINT_BIT_NAME(9,"EXDFREN");`
161			`PRINT_BIT_NAME(8,"NOBCKOF");`
162			`PRINT_BIT_NAME(7,"LOOPBCK");`
163			`PRINT_BIT_NAME(6,"IFG");`
164			`PRINT_BIT_NAME(5,"PRO");`
165			`PRINT_BIT_NAME(4,"IAM");`
166			`PRINT_BIT_NAME(3,"BRO");`
167			`PRINT_BIT_NAME(2,"NOPRE");`
168			`PRINT_BIT_NAME(1,"TXEN");`
169			`PRINT_BIT_NAME(0,"RXEN");`
170			`}`
171
172			`void oeth_print_intsource(unsigned long reg)`
173			`{`
174			`PRINT_BIT_NAME(6,"RXCtrlFrame");`
175			`PRINT_BIT_NAME(5,"TXCtrlFrame");`
176			`PRINT_BIT_NAME(4,"BUSY");`
177			`PRINT_BIT_NAME(3,"RXE");`
178			`PRINT_BIT_NAME(2,"RXB");`
179			`PRINT_BIT_NAME(1,"TXE");`
180			`PRINT_BIT_NAME(0,"TXB");`
181			`}`
182
183			`void oeth_print_ctrlmoder(unsigned long reg)`
184			`{`
185			`PRINT_BIT_NAME(2,"TXFLOW");`
186			`PRINT_BIT_NAME(1,"RXFLOW");`
187			`PRINT_BIT_NAME(0,"PASSALL");`
188			`}`
189
190			`void oeth_print_txbuf(unsigned long reg)`
191			`{`
192			`printf("RD%d ",!!(reg&(1<<15)));`
193			`printf("IQ%d ",!!(reg&(1<<14)));`
194			`printf("WP%d ",!!(reg&(1<<13)));`
195			`printf("PD%d ",!!(reg&(1<<12)));`
196			`printf("CC%d ",!!(reg&(1<<11)));`
197			`printf("UN%d ",!!(reg&(1<<8)));`
198			`printf("RY%d ",!!(reg&(1<<3)));`
199			`printf("LC%d ",!!(reg&(1<<2)));`
200			`printf("DF%d ",!!(reg&(1<<1)));`
201			`printf("CS%d ",!!(reg&(1<<0)));`
202			`printf("\n");`
203
204			`}`
205
206
207			`void oeth_print_rxbuf(unsigned long reg)`
208			`{`
209			`printf("EM%d ",!!(reg&(1<<15)));`
210			`printf("IQ%d ",!!(reg&(1<<14)));`
211			`printf("WP%d ",!!(reg&(1<<13)));`
212			`printf("PD%d ",!!(reg&(1<<12)));`
213			`printf("CF%d ",!!(reg&(1<<8)));`
214			`//printf("MS%d ",!!(reg&(1<<7)));`
215			`printf("OR%d ",!!(reg&(1<<6)));`
216			`printf("IS%d ",!!(reg&(1<<5)));`
217			`printf("DN%d ",!!(reg&(1<<4)));`
218			`printf("TL%d ",!!(reg&(1<<3)));`
219			`printf("SF%d ",!!(reg&(1<<2)));`
220			`printf("CE%d ",!!(reg&(1<<1)));`
221			`printf("LC%d ",!!(reg&(1<<0)));`
222			`printf("\n");`
223
224			`}`
225
226			`// PRINT_BIT_NAME(,"");`
227	349	julius	`void oeth_printregs(void)`
228			`{`
229			`volatile oeth_regs *regs;`
230			`regs = (oeth_regs *)(OETH_REG_BASE);`
231
232			`printf("Oeth regs: Mode Register : 0x%lx\n",`
233			`(unsigned long) regs->moder); /* Mode Register */`
234	530	julius	`oeth_print_moder((unsigned long) regs->moder);`
235	349	julius	`printf("Oeth regs: Interrupt Source Register 0x%lx\n",`
236			`(unsigned long) regs->int_src); /* Interrupt Source Register */`
237	530	julius	`oeth_print_intsource((unsigned long) regs->int_src);`
238	349	julius	`printf("Oeth regs: Interrupt Mask Register 0x%lx\n",`
239			`(unsigned long) regs->int_mask); /* Interrupt Mask Register */`
240			`printf("Oeth regs: Back to Bak Inter Packet Gap Register 0x%lx\n",`
241			`(unsigned long) regs->ipgt); /* Back to Bak Inter Packet Gap Register */`
242			`printf("Oeth regs: Non Back to Back Inter Packet Gap Register 1 0x%lx\n",`
243			`(unsigned long) regs->ipgr1); /* Non Back to Back Inter Packet Gap Register 1 */`
244			`printf("Oeth regs: Non Back to Back Inter Packet Gap Register 2 0x%lx\n",`
245			`(unsigned long) regs->ipgr2); /* Non Back to Back Inter Packet Gap Register 2 */`
246			`printf("Oeth regs: Packet Length Register (min. and max.) 0x%lx\n",`
247			`(unsigned long) regs->packet_len); /* Packet Length Register (min. and max.) */`
248			`printf("Oeth regs: Collision and Retry Configuration Register 0x%lx\n",`
249			`(unsigned long) regs->collconf); /* Collision and Retry Configuration Register */`
250			`printf("Oeth regs: Transmit Buffer Descriptor Number Register 0x%lx\n",`
251			`(unsigned long) regs->tx_bd_num); /* Transmit Buffer Descriptor Number Register */`
252			`printf("Oeth regs: Control Module Mode Register 0x%lx\n",`
253			`(unsigned long) regs->ctrlmoder); /* Control Module Mode Register */`
254	530	julius	`oeth_print_ctrlmoder((unsigned long) regs->ctrlmoder);`
255	349	julius	`printf("Oeth regs: MII Mode Register 0x%lx\n",`
256			`(unsigned long) regs->miimoder); /* MII Mode Register */`
257			`printf("Oeth regs: MII Command Register 0x%lx\n",`
258			`(unsigned long) regs->miicommand); /* MII Command Register */`
259			`printf("Oeth regs: MII Address Register 0x%lx\n",`
260			`(unsigned long) regs->miiaddress); /* MII Address Register */`
261			`printf("Oeth regs: MII Transmit Data Register 0x%lx\n",`
262			`(unsigned long) regs->miitx_data); /* MII Transmit Data Register */`
263			`printf("Oeth regs: MII Receive Data Register 0x%lx\n",`
264			`(unsigned long) regs->miirx_data); /* MII Receive Data Register */`
265			`printf("Oeth regs: MII Status Register 0x%lx\n",`
266			`(unsigned long) regs->miistatus); /* MII Status Register */`
267			`printf("Oeth regs: MAC Individual Address Register 0 0x%lx\n",`
268			`(unsigned long) regs->mac_addr0); /* MAC Individual Address Register 0 */`
269			`printf("Oeth regs: MAC Individual Address Register 1 0x%lx\n",`
270			`(unsigned long) regs->mac_addr1); /* MAC Individual Address Register 1 */`
271			`printf("Oeth regs: Hash Register 0 0x%lx\n",`
272			`(unsigned long) regs->hash_addr0); /* Hash Register 0 */`
273			`printf("Oeth regs: Hash Register 1 0x%lx\n",`
274			`(unsigned long) regs->hash_addr1); /* Hash Register 1 */`
275	530	julius	`printf("Oeth regs: TXCTRL 0x%lx\n",`
276			`(unsigned long) regs->txctrl); /* TX ctrl reg */`
277			`printf("Oeth regs: RXCTRL 0x%lx\n",`
278			`(unsigned long) regs->rxctrl); /* RX ctrl reg */`
279			`printf("Oeth regs: WBDBG 0x%lx\n",`
280			`(unsigned long) regs->wbdbg); /* Wishbone debug reg */`
281	349	julius
282			`}`
283
284	530	julius	`void oeth_print_wbdebug(void)`
285			`{`
286			`volatile oeth_regs *regs;`
287			`regs = (oeth_regs *)(OETH_REG_BASE);`
288			`printf("Oeth regs: WBDBG 0x%lx\n",`
289			`(unsigned long) regs->wbdbg); /* Wishbone debug reg */`
290			`}`
291
292	349	julius	`static int last_char;`
293
294			`void spin_cursor(void)`
295			`{`
296			`#ifdef RTLSIM`
297			`return;`
298			`#endif`
299			`volatile unsigned int i; // So the loop doesn't get optimised away`
300	567	julius	`printf("\r");`
301	349	julius	`if (last_char == 0)`
302			`printf("/");`
303			`else if (last_char == 1)`
304			`printf("-");`
305			`else if (last_char == 2)`
306			`printf("\\");`
307			`else if (last_char == 3)`
308			`printf("\|");`
309			`else if (last_char == 4)`
310			`printf("/");`
311			`else if (last_char == 5)`
312			`printf("-");`
313			`else if (last_char == 6)`
314			`printf("\\");`
315			`else if (last_char == 7)`
316			`{`
317			`printf("\|");`
318			`last_char=-1;`
319			`}`
320	567	julius	`printf("\r");`
321	349	julius	`last_char++;`
322
323			`for(i=0;i<150000;i++);`
324
325			`}`
326
327	567	julius	`static inline void ethphy_smi_read(void)`
328			`{`
329	349	julius
330	567	julius	`volatile oeth_regs *regs;`
331			`regs = (oeth_regs *)(OETH_REG_BASE);`
332
333			`regs->miicommand = OETH_MIICOMMAND_RSTAT;`
334			`/* Wait for command to be registered*/`
335			`while(!(regs->miistatus & OETH_MIISTATUS_BUSY));`
336
337			`regs->miicommand = 0;`
338
339			`while(regs->miistatus & OETH_MIISTATUS_BUSY);`
340			`}`
341
342
343			`void`
344			`eth_mii_write(char phynum, short regnum, short data)`
345			`{`
346			`static volatile oeth_regs regs = (oeth_regs )(OETH_REG_BASE);`
347			`regs->miiaddress = (regnum << 8) \| phynum;`
348			`regs->miitx_data = data;`
349			`regs->miicommand = OETH_MIICOMMAND_WCTRLDATA;`
350			`regs->miicommand = 0;`
351			`while(regs->miistatus & OETH_MIISTATUS_BUSY);`
352			`}`
353
354			`short`
355			`eth_mii_read(char phynum, short regnum)`
356			`{`
357			`static volatile oeth_regs regs = (oeth_regs )(OETH_REG_BASE);`
358			`regs->miiaddress = (regnum << 8) \| phynum;`
359			`regs->miicommand = OETH_MIICOMMAND_RSTAT;`
360			`regs->miicommand = 0;`
361			`while(regs->miistatus & OETH_MIISTATUS_BUSY);`
362
363			`return regs->miirx_data;`
364			`}`
365
366
367	349	julius	`/* Scan the MIIM bus for PHYs */`
368			`void scan_ethphys(void)`
369			`{`
370			`unsigned int phynum,regnum, i;`
371
372			`volatile oeth_regs *regs;`
373			`regs = (oeth_regs *)(OETH_REG_BASE);`
374
375			`regs->miitx_data = 0;`
376	567	julius
377			`printf("Locating Ethernet PHYs on MDIO bus\n");`
378	349	julius
379			`for(phynum=0;phynum<32;phynum++)`
380			`{`
381			`for (regnum=0;regnum<8;regnum++)`
382			`{`
383
384	567	julius
385	349	julius	`/* Now actually perform the read on the MIIM bus*/`
386			`regs->miiaddress = (regnum << 8) \| phynum; /* Basic Control Register */`
387	567	julius	`ethphy_smi_read();`
388	349	julius
389	567	julius	`//printf("%x\n",regs->miirx_data);`
390	349	julius
391	567	julius	`// Remember first phy found`
392			`if (regnum==0 && regs->miirx_data!=0xffff)`
393			`{`
394			`// Save found phy address in global variable ethphy_found`
395			`// for use elsewhere.`
396			`ethphy_found = phynum;`
397			`printf("PHY detected at address %d\n",phynum);`
398			`return;`
399			`}`
400
401	349	julius	`}`
402			`}`
403			`}`
404
405
406			`/* Scan the MIIM bus for PHYs */`
407			`void scan_ethphy(unsigned int phynum)`
408			`{`
409			`unsigned int regnum, i;`
410
411			`volatile oeth_regs *regs;`
412			`regs = (oeth_regs *)(OETH_REG_BASE);`
413
414			`regs->miitx_data = 0;`
415
416	415	julius	`for (regnum=0;regnum<32;regnum++)`
417	349	julius	`{`
418			`printf("scan_ethphy%d: r%x ",phynum, regnum);`
419
420			`/* Now actually perform the read on the MIIM bus*/`
421			`regs->miiaddress = (regnum << 8) \| phynum; /* Basic Control Register */`
422	567	julius
423			`ethphy_smi_read();`
424	349	julius
425			`printf("%x\n",regs->miirx_data);`
426			`}`
427
428			`}`
429
430
431	567	julius	`void ethphy_toggle_loopback(void)`
432			`{`
433			`volatile oeth_regs *regs;`
434			`regs = (oeth_regs *)(OETH_REG_BASE);`
435
436			`// First read the loopback bit from the basic control reg`
437			`if (eth_mii_read(ethphy_found%0xff, 0) & (1<<14))`
438			`{`
439			`printf("Disabling PHY loopback\n");`
440			`eth_mii_write(ethphy_found, 0,`
441			`eth_mii_read(ethphy_found,0) & ~(1<<14));`
442			`}`
443			`else`
444			`{`
445			`printf("Enabling PHY loopback\n");`
446			`eth_mii_write(ethphy_found, 0,`
447			`eth_mii_read(ethphy_found,0) \| (1<<14));`
448			`}`
449
450			`}`
451
452			`void marvell_phy_toggle_delay(void)`
453			`{`
454			`volatile oeth_regs *regs;`
455			`regs = (oeth_regs *)(OETH_REG_BASE);`
456
457			`// First read the loopback bit from the basic control reg`
458			`if (eth_mii_read(ethphy_found%0xff, 20) & (1<<1))`
459			`{`
460			`printf("Disabling PHY GTX_CLK delay\n");`
461			`eth_mii_write(ethphy_found, 20,`
462			`eth_mii_read(ethphy_found,20) & ~(1<<1));`
463			`}`
464			`else`
465			`{`
466			`printf("Enabling PHY GTX_CLK delay\n");`
467			`eth_mii_write(ethphy_found, 20,`
468			`eth_mii_read(ethphy_found,20) \| (1<<1));`
469			`}`
470
471			`}`
472
473			`void ethphy_toggle_gigadvertise()`
474			`{`
475			`volatile oeth_regs *regs;`
476			`regs = (oeth_regs *)(OETH_REG_BASE);`
477			`// Are we advertising gige?`
478			`if (eth_mii_read(ethphy_found%0xff, 9) & (1<<8))`
479			`{`
480			`printf("Disabling 1000base-t advertisement\n");`
481			`eth_mii_write(ethphy_found, 9,`
482			`eth_mii_read(ethphy_found,9) & ~((1<<8)\|(1<<9)));`
483			`}`
484			`else`
485			`{`
486			`printf("Enabling 1000base-t advertisement\n");`
487			`eth_mii_write(ethphy_found, 9,`
488			`eth_mii_read(ethphy_found,9) \| ((1<<8)\|(1<<9)));`
489			`}`
490
491
492
493			`}`
494	349	julius
495			`void ethmac_scanstatus(void)`
496			`{`
497			`volatile oeth_regs *regs;`
498			`regs = (oeth_regs *)(OETH_REG_BASE);`
499
500

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