ans_hw.c

linux intel 网卡驱动,利用他可以让inel的pro 100 网卡进行网络配置和实用

/*******************************************************************************

  
  Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.
  
  This program is free software; you can redistribute it and/or modify it 
  under the terms of the GNU General Public License as published by the Free 
  Software Foundation; either version 2 of the License, or (at your option) 
  any later version.
  
  This program 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 General Public License for 
  more details.
  
  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc., 59 
  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  
  The full GNU General Public License is included in this distribution in the
  file called LICENSE.
  
  Contact Information:
  Linux NICS <[e-mail]>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*******************************************************************************/

/**********************************************************************
*                                                                     *
* INTEL CORPORATION                                                   *
*                                                                     *
* This software is supplied under the terms of the license included   *
* above.  All use of this driver must be in accordance with the terms *
* of that license.                                                    *
*                                                                     *
* Module Name:  ans_hw.c                                              *
*                                                                     *
* Abstract: hardware specific files for the 8255x adapters            *
*                                                                     *
* Environment:                                                        *
*                                                                     *
**********************************************************************/

#include "ans_driver.h"

UINT32
bd_ans_hw_AvailableSpeeds(UINT32 phy)
{
    UINT32 speeds;

    speeds =
        IANS_STATUS_LINK_SPEED_10MBPS | IANS_STATUS_LINK_SPEED_100MBPS;
    
    return (speeds);
    
}

UINT32
bd_ans_hw_flags(BOARD_PRIVATE_STRUCT *bps, UINT16 revid)
{                                        
    UINT16 CompatibilityFlagsReg;
    UINT32 flags = 0;
    
    if (revid < I82559_REV_ID) {
        flags |= IANS_BD_FLAG4;
        
    } else {
        CompatibilityFlagsReg = READ_EEPROM(bps, EEPROM_COMPATIBILITY_FLAGS);
        
        if ((HIGH_BYTE(CompatibilityFlagsReg) & EEPROM_COMPATIBILITY_BIT_4) &&
            !(HIGH_BYTE(CompatibilityFlagsReg) & EEPROM_COMPATIBILITY_BIT_2)) {
            
            flags |= IANS_BD_FLAG4;
        }
    }
    
    return flags;
}
          
BD_ANS_BOOLEAN
bd_ans_hw_SupportsIEEETagging(BOARD_PRIVATE_STRUCT *bps, UINT16 revid)
{
    /* we only support IEEE tagging if we are on a bachelor or better card. */
    DEBUGLOG1("bd_ans_hw_SupportsIEEETagging: revid = %d\n", revid);

    if (revid >= I82558_REV_ID) {
        return BD_ANS_TRUE;
    }
    return BD_ANS_FALSE;
}

#ifdef IANS_BASE_VLAN_TAGGING
BD_ANS_BOOLEAN
bd_ans_hw_IsQtagPacket(BOARD_PRIVATE_STRUCT *bps, HW_RX_DESCRIPTOR *rxd)
{
    /* check the T bit */
     if (RXD_STATUS(rxd) & 0x1000) {  /* underrun */
        return BD_ANS_TRUE;
    }
    return BD_ANS_FALSE;
}

BD_ANS_STATUS
bd_ans_hw_InsertQtagHW(BOARD_PRIVATE_STRUCT *bps, HW_TX_DESCRIPTOR *txd, UINT16 *vlanid)
{  

    txd->tcbu.ipcb.ip_activation_high |= IPCB_INSERT_VLAN_ENABLE;
    txd->tcbu.ipcb.vlan = BYTE_SWAP_WORD(*vlanid);
    return BD_ANS_SUCCESS;
}

UINT16 
bd_ans_hw_GetVlanId(BOARD_PRIVATE_STRUCT *bps,
    HW_RX_DESCRIPTOR *rxd)
{
    UINT16 VlanId = INVALID_VLAN_ID;

    /* check the T bit */
    if (RXD_STATUS(rxd) & 0x1000) { /* underrun */
        VlanId = BYTE_SWAP_WORD(RXD_VLANID(rxd)) & VLAN_ID_MASK;
        /* clear out the vlan id bits just to be safe */
        RXD_STATUS(rxd) &= ~0x1000;
        RXD_VLANID(rxd) = 0;
    }
    DEBUGLOG1("bd_ans_hw_GetVlanId: got %d\n", VlanId);
    return VlanId;
}     

/* this function will setup the config bytes for the 8255x to enable
 * tagging.  The driver must call the this routine as part of it's normal
 * configure routine if it wants to enable 802.1q tagging.  To disable
 * tagging, the driver should just call configure without calling
 * this routine.
 */
void
bd_ans_hw_ConfigEnableTagging(UINT8 *ConfigBytes, UINT16 rev_id)
{
        // not in use for e100
}

#endif

BD_ANS_BOOLEAN
bd_ans_hw_SupportsVlanOffload(BOARD_PRIVATE_STRUCT *bps, UINT16 rev_id)
{
        
    if (rev_id >= GAMLA_REV_ID) {
        DEBUGLOG("bd_ans_hw_SupportsVlanOffload: does support\n");
        return BD_ANS_TRUE;
    }
    DEBUGLOG("bd_ans_hw_SupportsVlanOffload: does NOT support\n");
    return BD_ANS_FALSE;
}