/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Copyright (c) 2001-2006 Advanced Micro Devices, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * + Redistributions of source code must retain the above copyright notice,
 * + this list of conditions and the following disclaimer.
 *
 * + Redistributions in binary form must reproduce the above copyright
 * + notice, this list of conditions and the following disclaimer in the
 * + documentation and/or other materials provided with the distribution.
 *
 * + Neither the name of Advanced Micro Devices, Inc. nor the names of its
 * + contributors may be used to endorse or promote products derived from
 * + this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Import/Export/Re-Export/Use/Release/Transfer Restrictions and
 * Compliance with Applicable Laws.  Notice is hereby given that
 * the software may be subject to restrictions on use, release,
 * transfer, importation, exportation and/or re-exportation under
 * the laws and regulations of the United States or other
 * countries ("Applicable Laws"), which include but are not
 * limited to U.S. export control laws such as the Export
 * Administration Regulations and national security controls as
 * defined thereunder, as well as State Department controls under
 * the U.S. Munitions List.  Permission to use and/or
 * redistribute the software is conditioned upon compliance with
 * all Applicable Laws, including U.S. export control laws
 * regarding specifically designated persons, countries and
 * nationals of countries subject to national security controls.
 */


#include <sys/types.h>
#include <sys/cmn_err.h>
#include <sys/debug.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include "amd8111s_hw.h"
#include "amd8111s_main.h"

static void mdlEnableMagicPacketWakeUp(struct LayerPointers *);

/* PMR (Pattern Match RAM) */
static void mdlAddWakeUpPattern(struct LayerPointers *, unsigned char *,
    unsigned char *, unsigned long, unsigned long, int *);
static void mdlRemoveWakeUpPattern(struct LayerPointers *, unsigned char *,
    unsigned long, int *);

static int mdlMulticastBitMapping(struct LayerPointers *, unsigned char *, int);

static unsigned int mdlCalculateCRC(unsigned int, unsigned char *);

static void mdlChangeFilter(struct LayerPointers *, unsigned long *);
static void mdlReceiveBroadCast(struct LayerPointers *);
static void mdlDisableReceiveBroadCast(struct LayerPointers *);

static void mdlRequestResources(ULONG *);
static void mdlSetResources(struct LayerPointers *, ULONG *);
static void mdlFreeResources(struct LayerPointers *, ULONG *);

/*
 *      Initialises the data used in Mdl.
 */
static void
mdlInitGlbds(struct LayerPointers *pLayerPointers)
{
        struct mdl *pMdl = pLayerPointers->pMdl;

        /* Disable Rx and Tx. */
        pMdl->init_blk->MODE = 0x0000;

        /* Set Interrupt Delay Parameters */
        pMdl->IntrCoalescFlag = 1;
        pMdl->rx_intrcoalesc_time = 0xC8;       /* 200 */
        pMdl->rx_intrcoalesc_events = 5;
}

void
mdlPHYAutoNegotiation(struct LayerPointers *pLayerPointers, unsigned int type)
{
        int iData = 0;
        struct mdl *pMdl = pLayerPointers->pMdl;

        /* PHY auto negotiation or force speed/duplex */
        switch (type) {
        case PHY_AUTO_NEGOTIATION: /* Auto Negotiation */
                /* EN_PMGR: Disable the Port Manager */
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3, EN_PMGR);
                drv_usecwait(100000);

                /*
                 * Enable Autonegotiation the Phy now
                 *      XPHYANE(eXternal PHY Auto Negotiation Enable)
                 */
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CTRL2,
                    XPHYANE | XPHYRST);

                /* EN_PMGR: Enable the Port Manager */
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3,
                    VAL1 | EN_PMGR);

                drv_usecwait(500000);

                pMdl->Speed = 100;
                pMdl->FullDuplex = B_TRUE;

                break;

        case PHY_FORCE_HD_100:  /* 100Mbps HD */
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3, EN_PMGR);

                /* Force 100 Mbps, half duplex */
                iData |= XPHYSP;
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CTRL2, iData);

                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3,
                    VAL1 | EN_PMGR);

                drv_usecwait(500000);

                pMdl->Speed = 100;
                pMdl->FullDuplex = B_FALSE;

                break;

        case PHY_FORCE_FD_100:  /* 100Mbps FD */
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3, EN_PMGR);

                /* Force 100 Mbps, full duplex */
                iData |= (XPHYSP | XPHYFD);
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CTRL2, iData);

                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3,
                    VAL1 | EN_PMGR);

                drv_usecwait(500000);

                pMdl->Speed = 100;
                pMdl->FullDuplex = B_TRUE;

                break;

        case PHY_FORCE_HD_10: /* 10 Mbps HD  */
                /* Disable the Port Manager */
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3, EN_PMGR);
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CTRL2, iData);
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3,
                    VAL1 | EN_PMGR);

                drv_usecwait(500000);

                pMdl->Speed = 10;
                pMdl->FullDuplex = B_FALSE;

                break;

        case PHY_FORCE_FD_10: /* 10Mbps FD  */
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3, EN_PMGR);

                iData |= XPHYFD;
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CTRL2, iData);

                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3,
                    VAL1 | EN_PMGR);

                drv_usecwait(500000);

                pMdl->Speed = 10;
                pMdl->FullDuplex = B_TRUE;

                break;
        }
}

/*
 *      Clear HW configuration.
 */
static void
mdlClearHWConfig(struct LayerPointers *pLayerPointers)
{
        /*
         * Before the network controller is ready for operation,
         * several registers must be initialized.
         */
        unsigned int data32;
        int JumboFlag = JUMBO_DISABLED;
        ULONG MemBaseAddress;

        MemBaseAddress = pLayerPointers->pMdl->Mem_Address;

        /* AUTOPOLL0 Register */
        WRITE_REG16(pLayerPointers, MemBaseAddress + AUTOPOLL0, 0x8101);

        /* Clear RCV_RING_BASE_ADDR */
        WRITE_REG32(pLayerPointers, MemBaseAddress + RCV_RING_BASE_ADDR0, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + RCV_RING_BASE_ADDR1, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + RCV_RING_BASE_ADDR0, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + RCV_RING_BASE_ADDR2, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + RCV_RING_BASE_ADDR3, 0);

        /* Clear XMT_RING_BASE_ADDR */
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_BASE_ADDR0, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_BASE_ADDR1, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_BASE_ADDR2, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_BASE_ADDR3, 0);

        /* Clear CMD0 / CMD2 */
        WRITE_REG32(pLayerPointers, MemBaseAddress + CMD0, 0x000F0F7F);
        WRITE_REG32(pLayerPointers, MemBaseAddress + CMD2, 0x3F7F3F7F);

        /* Enable Port Management */
        WRITE_REG32(pLayerPointers, MemBaseAddress + CMD3, VAL1 | EN_PMGR);

        /* Clear CMD7 */
        WRITE_REG32(pLayerPointers, MemBaseAddress + CMD7, 0x1B);

        /* Clear CTRL0/1 */
        WRITE_REG32(pLayerPointers, MemBaseAddress + CTRL1, XMTSP_MASK);

        /* Clear DLY_INT_A/B */
        WRITE_REG32(pLayerPointers, MemBaseAddress + DLY_INT_A, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + DLY_INT_B, 0);

        /* Clear FLOW_CONTROL */
        WRITE_REG32(pLayerPointers, MemBaseAddress + FLOW_CONTROL, 0);

        /* Clear INT0 */
        data32 = READ_REG32(pLayerPointers, MemBaseAddress + INT0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + INT0, data32);

        /* Clear STVAL */
        WRITE_REG32(pLayerPointers, MemBaseAddress + STVAL, 0);

        /* Clear INTEN0 */
        WRITE_REG32(pLayerPointers, MemBaseAddress + INTEN0, 0x1F7F7F1F);

        /* Clear LADRF */
        WRITE_REG32(pLayerPointers, MemBaseAddress + LADRF1, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + LADRF1 + 4, 0);

        /* Clear LED0 */
        WRITE_REG32(pLayerPointers, MemBaseAddress + LED0, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + LED1, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + LED2, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + LED3, 0);

        /* Set RCV_RING_CFG */
        WRITE_REG16(pLayerPointers, MemBaseAddress + RCV_RING_CFG, 1);

        /* SRAM_SIZE & SRAM_BOUNDARY register combined */
        if (JumboFlag == JUMBO_ENABLED) {
                WRITE_REG32(pLayerPointers, MemBaseAddress + SRAM_SIZE,
                    0xc0010);
        } else {
                WRITE_REG32(pLayerPointers, MemBaseAddress + SRAM_SIZE,
                    0x80010);
        }

        /* Clear XMT_RING0/1/2/3_LEN */
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_LEN0, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_LEN1, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_LEN2, 0);
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_LEN3, 0);

        /* Clear XMT_RING_LIMIT */
        WRITE_REG32(pLayerPointers, MemBaseAddress + XMT_RING_LIMIT, 0);

        WRITE_REG16(pLayerPointers, MemBaseAddress + MIB_ADDR, MIB_CLEAR);
}

unsigned int
mdlReadMib(struct LayerPointers *pLayerPointers, char MIB_COUNTER)
{
        unsigned int status;
        unsigned int data;
        unsigned long mmio = pLayerPointers->pMdl->Mem_Address;

        WRITE_REG16(pLayerPointers, mmio + MIB_ADDR, MIB_RD_CMD | MIB_COUNTER);
        do {
                status = READ_REG16(pLayerPointers, mmio + MIB_ADDR);
        } while ((status & MIB_CMD_ACTIVE));

        data = READ_REG32(pLayerPointers, mmio + MIB_DATA);
        return (data);
}

/* Return 1 on success, return 0 on fail */
unsigned int
mdlReadPHY(struct LayerPointers *pLayerPointers, unsigned char phyid,
    unsigned char regaddr, unsigned int *value)
{
        unsigned int status, data, count;
        unsigned long mmio = pLayerPointers->pMdl->Mem_Address;

        count = 0;
        do {
                status = READ_REG16(pLayerPointers, mmio + PHY_ACCESS);
                count ++;
                drv_usecwait(10);
        } while ((status & PHY_CMD_ACTIVE) & (count < PHY_MAX_RETRY));

        if (count == PHY_MAX_RETRY) {
                return (0);
        }

        data = ((regaddr & 0x1f) << 16) | ((phyid & 0x1f) << 21) | PHY_RD_CMD;
        WRITE_REG32(pLayerPointers, mmio + PHY_ACCESS, data);
        do {
                status = READ_REG16(pLayerPointers, mmio + PHY_ACCESS);
                drv_usecwait(10);
                count ++;
        } while ((status & PHY_CMD_ACTIVE) & (count < PHY_MAX_RETRY));

        if ((count == PHY_MAX_RETRY) || (status & PHY_RD_ERR)) {
                return (0);
        }

        *value = status & 0xffff;
        return (1);
}

void
mdlGetPHYID(struct LayerPointers *pLayerPointers)
{
        unsigned int id1, id2, i;
        for (i = 1; i < 32; i++) {
                if (mdlReadPHY(pLayerPointers, i, MII_PHYSID1, &id1) == 0)
                        continue;
                if (mdlReadPHY(pLayerPointers, i, MII_PHYSID2, &id2) == 0)
                        continue;
                if ((id1 != 0xffff) & (id2 != 0xffff)) {
                        pLayerPointers->pMdl->phy_id = i;
                        return;
                }
        }
}

/* Return 1 on success, return 0 on fail */
unsigned int
mdlWritePHY(struct LayerPointers *pLayerPointers, unsigned char phyid,
    unsigned char regaddr, unsigned int value)
{
        unsigned int status, data, count;
        unsigned long mmio = pLayerPointers->pMdl->Mem_Address;

        count = 0;
        do {
                status = READ_REG16(pLayerPointers, mmio + PHY_ACCESS);
                count ++;
                drv_usecwait(10);
        } while ((status & PHY_CMD_ACTIVE) & (count < PHY_MAX_RETRY));

        if (count == PHY_MAX_RETRY) {
                return (0);
        }

        data = ((regaddr & 0x1f) << 16) | ((phyid & 0x1f) << 21) |
            (value & 0xffff) | PHY_WR_CMD;
        WRITE_REG32(pLayerPointers, mmio + PHY_ACCESS, data);

        do {
                status = READ_REG16(pLayerPointers, mmio + PHY_ACCESS);
                drv_usecwait(10);
                count ++;
        } while ((status & PHY_CMD_ACTIVE) & (count < PHY_MAX_RETRY));

        if ((count == PHY_MAX_RETRY) && (status & PHY_RD_ERR)) {
                return (0);
        }

        return (1);
}

/*
 *      To Send the packet.
 */
void
mdlTransmit(struct LayerPointers *pLayerPointers)
{
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD0,
            VAL1 | TDMD0);
}

/*
 *      To Receive a packet.
 */
void
mdlReceive(struct LayerPointers *pLayerPointers)
{
        /*
         * Receive Demand for ring 0, which when set causes the Descriptor
         * Management Unit to access the Receive Descriptor Ring if it does
         * not already own the next descriptor.
         */
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD0,
            VAL2 | RDMD0);
}

/*
 * Read the NIC interrupt.
 *
 * Returns:
 *      the value of interrupt causes register
 */
unsigned int
mdlReadInterrupt(struct LayerPointers *pLayerPointers)
{
        unsigned int nINT0;
        struct mdl *pMdl = 0;

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        /*
         * INT0 identifies the source or sources of an interrupt. With the
         * exception of INTR and INTPN, all bits in this register are "write
         * 1 to clear" so that the CPU can clear the interrupt condition by
         * reading the register and then writing back the same data that it
         * read. Writing a 0 to a bit in this register has no effect.
         */

        /* Read interrupt status */
        nINT0 = READ_REG32(pLayerPointers, pMdl->Mem_Address + INT0);

        /* Process all the INT event until INTR bit is clear. */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + INT0, nINT0);
        return (nINT0);
}

void
mdlHWReset(struct LayerPointers *pLayerPointers)
{
        struct mdl *pMdl = pLayerPointers->pMdl;
        unsigned int ulData, i = 0;
        int  JumboFlag = JUMBO_DISABLED;
        ULONG Mem_Address = pMdl->Mem_Address;

        /*
         * Stop the Card:
         *      First we make sure that the device is stopped and no
         *      more interrupts come out. Also some registers must be
         *      programmed with CSR0 STOP bit set.
         */
        mdlStopChip(pLayerPointers);

        /*
         * MAC Address Setup:
         *      MAC Physical Address register. All bits in this register are
         *      restored to default values when the RST pin is asserted.
         */
        for (i = 0; i < ETH_LENGTH_OF_ADDRESS; i++) {
                WRITE_REG8(pLayerPointers, pMdl->Mem_Address + PADR + i,
                    pMdl->Mac[i]);
        }

        /* Set RCV_RING_CFG */

        if (JumboFlag == JUMBO_ENABLED) {
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD2,
                    VAL0 | APAD_XMT | REX_RTRY | VAL1 | DXMTFCS | RPA | VAL2);

                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD3,
                    VAL2 | JUMBO);
        } else {
                /*
                 * APAD_XMT: Auto Pad Transmit. When set, APAD_XMT enables
                 * the automatic padding feature. Transmit frames are padded
                 * to extend them to 64 bytes including FCS.
                 *
                 * DXMTFCS: Disable Transmit CRC. When DXMTFCS is set to 1, no
                 * Transmit CRC is generated. DXMTFCS is overridden when
                 * ADD_FCS and ENP bits are set in the transmit descriptor.
                 *
                 * ASTRIP_RCV: Auto Strip Receive. When ASTRP_RCV is set to 1,
                 * the receiver automatically strips pad bytes from the
                 * received message by observing the value in the length field
                 * and by stripping excess bytes if this value is below the
                 * minimum data size (46 bytes).
                 */
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD2,
                    VAL0 | APAD_XMT | REX_RTRY | REX_UFLO | VAL1 | DXMTFCS
                    | ASTRIP_RCV | RPA | VAL2);
        }

        /* Transmit Start Point setting (csr80) */
        ulData = READ_REG32(pLayerPointers, Mem_Address + CTRL1);
        ulData &= ~XMTSP_MASK;

        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CTRL1,
            ulData | XMTSP_128);
        /* Disable Prom  */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD2, PROM);

        mdlPHYAutoNegotiation(pLayerPointers, pMdl->External_Phy);

        pMdl->IpgValue = MIN_IPG_DEFAULT;
        /* Set the IPG value */
        WRITE_REG16(pLayerPointers, pMdl->Mem_Address + IFS,
            pMdl->IpgValue);

        /* Disable Following Interrupts. */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + INTEN0,
            APINT5EN | APINT4EN | APINT3EN |
            APINT2EN | APINT1EN | APINT0EN | MIIPDTINTEN |
            MCCIINTEN | MCCINTEN | MREINTEN |
            TINTEN0 |
            SPNDINTEN | MPINTEN | SINTEN | LCINTEN);

        /* Enable Following Interrupt */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + INTEN0,
            VAL0 | RINTEN0);

        /* Base Address of Transmit Descriptor Ring 0. */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + XMT_RING_BASE_ADDR0,
            pMdl->init_blk->TDRA);

        /* Base Address of Receive Descriptor Ring. */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + RCV_RING_BASE_ADDR0,
            pMdl->init_blk->RDRA);

        /* The number of descriptors in Transmit Descriptor Ring 0 */
        WRITE_REG16(pLayerPointers, pMdl->Mem_Address + XMT_RING_LEN0,
            (unsigned short)pLayerPointers->pMdl->TxRingSize);

        /*
         * Receive Descriptor Ring Length. All bits in this register are
         * restored to default values when the RST pin is asserted.
         */
        WRITE_REG16(pLayerPointers, pMdl->Mem_Address + RCV_RING_LEN0,
            (unsigned short)pLayerPointers->pMdl->RxRingSize);

        if (pLayerPointers->pMdl->IntrCoalescFlag) {
                SetIntrCoalesc(pLayerPointers, B_TRUE);
        }

        /* Start the chip */
        mdlStartChip(pLayerPointers);
}

/*
 * Perform the open oerations on the adapter.
 */
void
mdlOpen(struct LayerPointers *pLayerPointers)
{
        int i, sum;
        struct mdl *pMdl = pLayerPointers->pMdl;

        /* Get Mac address */
        sum = 0;
        for (i = 0; i < 6; i++) {
                pMdl->Mac[i] = READ_REG8(pLayerPointers,
                    pMdl->Mem_Address + PADR + i);
                sum += pMdl->Mac[i];
        }
        if (sum == 0) {
                for (i = 0; i < 6; i++) {
                        pMdl->Mac[i] = 0;
                }
        }

        /* Initialize the hardware */
        mdlClearHWConfig(pLayerPointers);
        mdlGetPHYID(pLayerPointers);

}

void
mdlGetMacAddress(struct LayerPointers *pLayerPointers,
    unsigned char *macAddress)
{
        struct mdl *pMdl = pLayerPointers->pMdl;
        int i;

        for (i = 0; i < 6; i++) {
                macAddress[i] = pMdl->Mac[i] = READ_REG8(pLayerPointers,
                    pMdl->Mem_Address + PADR + i);
        }

}


void
mdlSetMacAddress(struct LayerPointers *pLayerPointers,
    unsigned char *macAddress)
{
        int i;
        struct mdl *pMdl = 0;

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        pMdl->Mac[0] = macAddress[0];
        pMdl->Mac[1] = macAddress[1];
        pMdl->Mac[2] = macAddress[2];
        pMdl->Mac[3] = macAddress[3];
        pMdl->Mac[4] = macAddress[4];
        pMdl->Mac[5] = macAddress[5];

        /*
         * MAC Address Setup:
         *      MAC Physical Address register. All bits in this register are
         *      restored to default values when the RST pin is asserted.
         */
        for (i = 0; i < ETH_LENGTH_OF_ADDRESS; i++) {
                WRITE_REG8(pLayerPointers, pMdl->Mem_Address + PADR + i,
                    pMdl->Mac[i]);
        }
}

/*
 * This array is filled with the size of the memory required for
 * allocating purposes.
 */
static void
mdlRequestResources(ULONG *mem_req_array)
{
        /* 1) For mdl structure */
        *mem_req_array = VIRTUAL;               /* Type */
        *(++mem_req_array) = sizeof (struct mdl); /* Size */

        /* 2) For PMR PtrList array (PMR_ptrList) */
        *(++mem_req_array) = VIRTUAL;           /* Type */
        /* Size */
        *(++mem_req_array) = sizeof (unsigned int) * (MAX_ALLOWED_PATTERNS + 2);

        /* 3) For PMR Pattern List array (PatternList) */
        *(++mem_req_array) = VIRTUAL;                   /* Type */
        /* Size */
        *(++mem_req_array) = sizeof (unsigned char) * (MAX_PATTERNS + 2);

        /* 4) For pmr PatternLength array (PatternLength) */
        *(++mem_req_array) = VIRTUAL;                   /* Type */
        /* Size */
        *(++mem_req_array) = sizeof (unsigned int) * (MAX_ALLOWED_PATTERNS + 2);

        /*
         * 5) For the init_block (init_blk)
         */
        *(++mem_req_array) = VIRTUAL;
        *(++mem_req_array) = sizeof (struct init_block);

        *(++mem_req_array) = 0;
        mem_req_array++;
}


/*
 *      Purpose  :
 *              This array contains the details of the allocated memory. The
 *              pointers are taken from the respective locations in the array &
 *              assigned appropriately to the respective structures.
 *
 *      Arguments :
 *              pLayerPointers
 *                      Pointer to the adapter structure.
 *              pmem_set_array
 *                      Pointer to the array that holds the data after required
 *                      allocating memory.
 */
static void
mdlSetResources(struct LayerPointers *pLayerPointers, ULONG *pmem_set_array)
{
        struct mdl *pMdl = 0;

        /* 1) For mdl structure */
        pmem_set_array++;       /* Type */
        pmem_set_array++;       /* Size */
        pLayerPointers->pMdl = (struct mdl *)(*pmem_set_array);

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        pMdl->RxRingLenBits = RX_RING_LEN_BITS;
        pMdl->TxRingLenBits = TX_RING_LEN_BITS;
        pMdl->TxRingSize = TX_RING_SIZE;
        pMdl->RxRingSize = RX_RING_SIZE;

        /*
         * Default values that would be used if it does not enable
         * enable dynamic ipg.
         */

        /*  2) Set the pointers to the PMR Pointer List */
        pmem_set_array++;       /* Type */
        pmem_set_array++;       /* Size */
        pmem_set_array++;       /* Virtual Addr of PtrList */
        pMdl->PMR_PtrList = (unsigned int *)(*pmem_set_array);

        /* 3) Set the pointers to the PMR Pattern List */
        pmem_set_array++;       /* Type */
        pmem_set_array++;       /* Size */
        pmem_set_array++;       /* Virtual Addr of PatternList */
        pMdl->PatternList = (unsigned char *)(*pmem_set_array);

        /* 4) Set the pointers to the PMR Pattern Length */
        pmem_set_array++;       /* Type */
        pmem_set_array++;       /* Size */
        pmem_set_array++;       /* Virtual Addr of PatternLength */
        pMdl->PatternLength = (unsigned int *)(*pmem_set_array);

        /* 5) Set the pointers to the init block */
        pmem_set_array++;       /* Type  */
        pmem_set_array++;       /* Size */
        pmem_set_array++;       /* Virtual Addr of init_block */
        pMdl->init_blk = (struct init_block *)(*pmem_set_array);

        pMdl->init_blk->TLEN = pMdl->TxRingLenBits;
        pMdl->init_blk->RLEN = pMdl->RxRingLenBits;

        pmem_set_array++;

        *pmem_set_array = 0;
}

/*
 *      Purpose:
 *              This array is filled with the size of the structure & its
 *              pointer for freeing purposes.
 *
 *      Arguments:
 *              pLayerPointers
 *                      Pointer to the adapter structure.
 *              mem_free_array
 *                      Pointer to the array that holds the data required for
 *                      freeing.
 */
static void
mdlFreeResources(struct LayerPointers *pLayerPointers, ULONG *pmem_free_array)
{
        struct mdl *pMdl = 0;

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        /* 1) For mdl structure */
        *(pmem_free_array) = VIRTUAL;           /* Type */
        *(++pmem_free_array) = sizeof (struct mdl); /* Size */
        *(++pmem_free_array) = (ULONG)pMdl;  /* VA */

        /* 2) For ptr list */
        *(++pmem_free_array) = VIRTUAL;         /* Type */
        *(++pmem_free_array) =  sizeof (unsigned int)
            * (MAX_ALLOWED_PATTERNS + 2);  /* Size */
        *(++pmem_free_array) = (ULONG)pMdl->PMR_PtrList;  /* VA */

        /* 3) For pattern list */
        *(++pmem_free_array) = VIRTUAL;         /* Type  */
        /* Size */
        *(++pmem_free_array) =  sizeof (unsigned char) * (MAX_PATTERNS + 2);
        *(++pmem_free_array) = (ULONG)pMdl->PatternList;  /* VA */

        /* 4) For pattern length */
        *(++pmem_free_array) = VIRTUAL;                         /* Type */
        *(++pmem_free_array) =  sizeof (unsigned int)
            * (MAX_ALLOWED_PATTERNS + 2);                       /* Size */
        *(++pmem_free_array) = (ULONG)pMdl->PatternLength;      /* VA */

        /* 5) For init_blk structure */
        *(++pmem_free_array) = VIRTUAL;                         /* Type */
        /* Size */
        *(++pmem_free_array) = sizeof (struct init_block);
        *(++pmem_free_array) = (ULONG)pMdl->init_blk;           /* VA */

        *(++pmem_free_array) = 0;
}

void
mdlStartChip(struct LayerPointers *pLayerPointers)
{
        /* Enable Receiver */
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD0,
            VAL2 | RDMD0);

        /* Enable Interrupt and Start processing descriptor, Rx and Tx */
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD0,
            VAL0 | INTREN | RUN);
}

/*
 *      Stops the chip.
 */
void
mdlStopChip(struct LayerPointers *pLayerPointers)
{
        int nINT0;
        struct mdl *pMdl = 0;

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        /* Disable interrupt */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD0, INTREN);

        /* Clear interrupt status */
        nINT0 = READ_REG32(pLayerPointers, pMdl->Mem_Address + INT0);
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + INT0, nINT0);

        /*
         * Setting the RUN bit enables the controller to start processing
         * descriptors and transmitting and  receiving packets. Clearing
         * the RUN bit to 0 abruptly disables the transmitter, receiver, and
         * descriptor processing logic, possibly while a frame is being
         * transmitted or received.
         * The act of changing the RUN bit from 1 to 0 causes the following
         * bits to be reset to 0: TX_SPND, RX_SPND, TX_FAST_SPND, RX_FAST_SPND,
         * RDMD, all TDMD bits, RINT, all TINT bits, MPINT, and SPNDINT.
         */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD0, RUN);
}

/*
 *      Enables the interrupt.
 */
void
mdlEnableInterrupt(struct LayerPointers *pLayerPointers)
{
        /*
         * Interrupt Enable Bit:
         * This bit allows INTA to be asserted if any bit in the interrupt
         * register is set. If INTREN is cleared to 0, INTA will not be
         * asserted, regardless of the state of the interrupt register.
         */
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD0,
            VAL0 | INTREN);
}

#ifdef AMD8111S_DEBUG
static void
mdlClearInterrupt(struct LayerPointers *pLayerPointers)
{
        unsigned int nINT0;
        struct mdl *pMdl = 0;

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        /* Clear interrupt status */
        nINT0 = READ_REG32(pLayerPointers, pMdl->Mem_Address + INT0);
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + INT0, nINT0);

}
#endif

/*
 *      Disables the interrupt.
 */
void
mdlDisableInterrupt(struct LayerPointers *pLayerPointers)
{
        /* Disable interrupt */
        WRITE_REG32(pLayerPointers,
            pLayerPointers->pMdl->Mem_Address + CMD0, INTREN);
}

/*
 *      Reads the link status
 */
int
mdlReadLink(struct LayerPointers *pLayerPointers)
{
        unsigned int link_status = 0;

        link_status = READ_REG32(pLayerPointers,
            pLayerPointers->pMdl->Mem_Address + STAT0);

        if ((link_status & LINK_STAT)) {
                return (LINK_UP);
        } else {
                return (LINK_DOWN);
        }
}

/*
 *      Purpose  :
 *              Adds the wakeup pattern given by the upper layer.
 *
 *      Arguments :
 *              pLayerPointers
 *                      Pointer to the Adapter structure.
 *              PatternMask
 *                      The mask for the pattern to be added.
 *              Pattern
 *                      The Pattern to be added.
 *              InfoBuffer_MaskSize
 *                      The mask size as specified in the Information Buffer.
 *              PatternSize
 *                      The PatternSize as specified in the Information Buffer.
 */
static void
mdlAddWakeUpPattern(struct LayerPointers *pLayerPointers,
    unsigned char *PatternMask, unsigned char *Pattern,
    unsigned long InfoBuffer_MaskSize, unsigned long PatternSize, int *retval)
{
        unsigned long MaskSize;
        unsigned long ReqSize;
        unsigned char byteData = 0, tmpData;
        unsigned char Skip = 0;
        unsigned int i = 0, flag = 1, count = 1;
        unsigned int j;
        int PatternOffset, SearchForStartOfPattern = 1;
        struct mdl *pMdl = 0;

        pMdl = pLayerPointers->pMdl;

        if (pMdl->TotalPatterns >= MAX_ALLOWED_PATTERNS) {
                *retval = -1;
                return;
        }

        MaskSize = PatternSize/4 + (PatternSize%4 ? 1 : 0);

        ReqSize = PatternSize + MaskSize;
        if (((PatternSize+MaskSize)%5) != 0)
                ReqSize +=  5 - ((PatternSize+MaskSize)%5);

        if (ReqSize >
            (unsigned long)(MAX_PATTERNS - pMdl->PatternList_FreeIndex)) {
                *retval = -1;
                return;
        }

        if (InfoBuffer_MaskSize != PatternSize/8 + (PatternSize%8 ? 1 : 0)) {
                *retval = -1;
                return;
        }

        i = pMdl->PatternList_FreeIndex;

        pMdl->PMR_PtrList[pMdl->TotalPatterns] = i;

        pMdl->PatternLength[pMdl->TotalPatterns] = (unsigned int)PatternSize;

        while (i < (pMdl->PatternList_FreeIndex + PatternSize + MaskSize)) {
                if (flag) {
                        byteData = *PatternMask;
                        pMdl->PatternList[i++] =
                            (unsigned int)((byteData & 0x0F) | (Skip<< 4));
                        flag = 0;
                } else {
                        pMdl->PatternList[i++] = (unsigned int)
                            (((unsigned)(byteData & 0xF0) >> 4) | (Skip << 4));
                        PatternMask++;
                        flag = 1;
                }
                count = 1;
                while ((count < 5) && (i <
                    pMdl->PatternList_FreeIndex + PatternSize + MaskSize)) {
                        tmpData = *Pattern;
                        Pattern++;
                        pMdl->PatternList[i++] = tmpData;
                        count++;
                }
        }

        /* Filling up the extra byte blocks in the row to 0. */
        for (i = (pMdl->PatternList_FreeIndex + PatternSize + MaskSize);
            i < (pMdl->PatternList_FreeIndex + ReqSize); i++)
                pMdl->PatternList[i] = 0;

        /* Set the EOP bit for the last mask!!! */
        pMdl->PatternList[pMdl->PatternList_FreeIndex + ReqSize - 5] |= 0x80;

        for (j = 0; j < 8; j++) {
                pMdl->tmpPtrArray[j] = 0;
        }

        /* Zeroing the skip value of all the pattern masks */
        j = 0;
        while (j < (pMdl->PatternList_FreeIndex + ReqSize)) {
                pMdl->PatternList[j] &= 0x8f;
                j += 5;
        }

        /*
         * Scan the whole array & update the start offset of the pattern in the
         * PMR and update the skip value.
         */
        j = 0;
        i = 0;

        PatternOffset = 1;
        Skip = 0;

        while (j < (pMdl->PatternList_FreeIndex + ReqSize)) {

                if (pMdl->PatternList[j] & 0x0f) {
                        PatternOffset ++;
                        if (SearchForStartOfPattern == 1) {
                                SearchForStartOfPattern = 0;
                                pMdl->tmpPtrArray[i++] = PatternOffset;
                        } else if (pMdl->PatternList[j] & 0x80) {
                                SearchForStartOfPattern = 1;
                        }
                        pMdl->PatternList[j] |= (Skip << 4);
                        Skip = 0;
                } else {
                        Skip++;
                }
                j += 5;
        }

        /* valid pattern.. so update the house keeping info. */
        pMdl->PatternList_FreeIndex += (unsigned short)ReqSize;
        pMdl->TotalPatterns++;

        *retval = 0;
}

/*
 *      Purpose:
 *              Removes the specified wakeup pattern.
 *
 *      Arguments :
 *              pLayerPointers
 *                      Pointer to the Adapter structure.
 *              Pattern
 *                      The Pattern to be added.
 *              PatternSize
 *                      The PatternSize as specified in the Information Buffer.
 */
static void
mdlRemoveWakeUpPattern(struct LayerPointers *pLayerPointers,
    unsigned char *Pattern, unsigned long PatternSize, int *retval)
{
        unsigned long ReqSize, MaskSize;
        unsigned char tmpData;
        unsigned long Data;
        unsigned short Data1, Data2, Data3, Data4, Data5, Data6, Data7, Data8;
        int PatternMismatch = 0;
        int count, StartIndex, index = 0;
        unsigned int i, j;
        unsigned char Skip = 0;
        struct mdl *pMdl = 0;
        int PatternOffset, SearchForStartOfPattern = 1;
        unsigned long tmpPtrArray[8];
        int offset;

        Data1 = Data2 = Data3 = Data4 = Data5 = Data6 = Data7 = Data8 = 0;

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        /* Find the pattern to be removed. */
        if (pMdl->TotalPatterns == 0) {
                *retval = -1;
                return;
        }

        MaskSize = PatternSize/4 + (PatternSize%4 ? 1 : 0);

        ReqSize = PatternSize + MaskSize;
        if (((PatternSize+MaskSize)%5) != 0)
                ReqSize +=  5 - ((PatternSize+MaskSize)%5);

        count = pMdl->TotalPatterns;

        while (count--) {
                PatternMismatch = 0;
                StartIndex = pMdl->PMR_PtrList[index];

                if (pMdl->PatternLength[index] != PatternSize) {
                        index++;
                        PatternMismatch = 1;
                        continue;
                }

                for (i = StartIndex; i < (StartIndex+ReqSize); i++) {
                        if (!(i%5))
                                i++;

                        tmpData = *Pattern;
                        if (pMdl->PatternList[i] != tmpData) {
                                PatternMismatch = 1;
                                break;
                        }
                        Pattern++;
                }

                if (PatternMismatch == 0) {
                        i = StartIndex + ReqSize;

                        /* Pattern found remove it from the arrays */
                        while (i < pMdl->PatternList_FreeIndex) {
                                pMdl->PatternList[StartIndex] =
                                    pMdl->PatternList[i];
                                i++;
                                StartIndex++;
                        }

                        pMdl->PatternList_FreeIndex =
                            (unsigned short)(StartIndex);

                        while (StartIndex < MAX_PATTERNS)
                                pMdl->PatternList[StartIndex++] = 0;

                        while (index < (int)pMdl->TotalPatterns) {
                                pMdl->PMR_PtrList[index] =
                                    pMdl->PMR_PtrList[index+1] - ReqSize;

                                pMdl->PatternLength[index] =
                                    pMdl->PatternLength[index+1];

                                index ++;
                        }

                        index--;
                        while (index < MAX_ALLOWED_PATTERNS) {
                                pMdl->PMR_PtrList[index+1] = 0;
                                pMdl->PatternLength[index+1] = 0;
                                index++;
                        }

                        break;
                }
                index++;
        }

        if (PatternMismatch) {
                *retval = -1;
                return;
        }


        for (j = 0; j < 8; j++) {
                tmpPtrArray[j] = 0;
        }

        /* Zeroing the skip value of all the pattern masks */
        j = 0;
        while (j < (pMdl->PatternList_FreeIndex)) {
                pMdl->PatternList[j] &= 0x8f;
                j += 5;
        }

        /*
         * Scan the whole array & update the start offset of the pattern in the
         * PMR and update the skip value.
         */
        j = 0;
        i = 0;
        Skip = 0;
        PatternOffset = 1;

        while (j < (pMdl->PatternList_FreeIndex)) {
                if (pMdl->PatternList[j] & 0x0f) {

                        PatternOffset++;
                        if (SearchForStartOfPattern == 1) {
                                SearchForStartOfPattern = 0;
                                tmpPtrArray[i++] = PatternOffset;
                        } else if (pMdl->PatternList[j] & 0x80) {
                                SearchForStartOfPattern = 1;
                        }
                        pMdl->PatternList[j] |= (Skip << 4);
                        Skip = 0;
                } else {
                        Skip++;
                }
                j += 5;
        }


        /* Write back the arrays to the PMR & lock the pmr */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address+CMD7, PMAT_MODE);

        /* Write the data & ctrl patterns from the array to the PMR */
        i = 0;

        offset = 2;

        while (i < MAX_PATTERNS) {
                if (pMdl->PatternList[i] != 0) {
                        Data = pMdl->PatternList[i+3] << 24 |
                            pMdl->PatternList[i+2] << 16 |
                            pMdl->PatternList[i+1] << 8  |
                            pMdl->PatternList[i];

                        WRITE_REG32(pLayerPointers,
                            pMdl->Mem_Address+PMAT1, Data);

                        Data = (unsigned long) ((1<<30) | (offset << 16) |
                            pMdl->PatternList[i+4]);

                        WRITE_REG32(pLayerPointers,
                            pMdl->Mem_Address+PMAT0, Data);

                        offset++;

                        if (offset >= 64) {
                                /* PMR is full !!!! */
                                *retval = -1;
                                return;

                        }
                }
                i += 5;
        }

        /* Valid pattern.. so update the house keeping info. */
        pMdl->TotalPatterns--;

        /* Update the pointer in the PMR */
        pMdl->PatternEnableBit = 0;
        for (i = 0; i < pMdl->TotalPatterns; i++) {
                pMdl->PatternEnableBit |= (0x0001 << i);
        }

        Data1 = Data2 = Data3 = Data4 = Data5 = Data6 = Data7 = Data8 = 0;

        switch (pMdl->TotalPatterns) {
        case 8 :
                Data8 = (unsigned short)tmpPtrArray[7];
                /* FALLTHROUGH */
        case 7 :
                Data7 = (unsigned short)tmpPtrArray[6];
                /* FALLTHROUGH */
        case 6 :
                Data6 = (unsigned short)tmpPtrArray[5];
                /* FALLTHROUGH */
        case 5 :
                Data5 = (unsigned short)tmpPtrArray[4];
                /* FALLTHROUGH */
        case 4 :
                Data4 = (unsigned short)tmpPtrArray[3];
                /* FALLTHROUGH */
        case 3 :
                Data3 = (unsigned short)tmpPtrArray[2];
                /* FALLTHROUGH */
        case 2 :
                Data2 = (unsigned short)tmpPtrArray[1];
                /* FALLTHROUGH */
        case 1 :
                Data1 = (unsigned short)tmpPtrArray[0];
                break;
        }

        Data = pMdl->PatternEnableBit & 0x0f;

        /* Updating the pointers 1,2,3 & 4 */
        Data = (Data3 << 24 |   Data2 << 16 |   Data1 << 8  |   Data);
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + PMAT1, Data);

        Data = (unsigned long) ((1<<30) | Data4);
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + PMAT0, Data);

        /* Updating the pointers 4,5,6 & 7 */
        Data = (unsigned short)((unsigned)(pMdl->PatternEnableBit & 0xf0) >> 4);

        Data = (Data7 << 24 |   Data6 << 16 |   Data5 << 8  |   Data);
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + PMAT1, Data);

        Data = (unsigned long) ((1<<30) | (1<<16) | Data8);
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + PMAT0, Data);

        /* Unlock the PMR */
        WRITE_REG32(pLayerPointers, pMdl->Mem_Address + CMD7, VAL0 | PMAT_MODE);

        *retval = 0;
}


/*
 *      Checks the control register for the speed and the type of the
 *      network connection.
 */
void
mdlGetActiveMediaInfo(struct LayerPointers *pLayerPointers)
{

        unsigned long  ulData;
        struct mdl *pMdl = 0;

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        ulData = READ_REG32(pLayerPointers, pMdl->Mem_Address + STAT0);

        switch (ulData & SPEED_MASK) {
        case SPEED_100Mbps:
                pMdl->Speed = 100;
                break;
        case SPEED_10Mbps:
                pMdl->Speed = 10;
                break;
        default:
                pMdl->Speed = 100;
                break;
        }

        if (ulData & FULL_DPLX) {
                pMdl->FullDuplex = B_TRUE;
        } else {
                pMdl->FullDuplex = B_FALSE;
        }
}

void
mdlChangeFilter(struct LayerPointers *pLayerPointers, unsigned long  *ArrayPtr)
{
        unsigned long *Ptr;
        unsigned char *MulticastArray;
        unsigned char *Pattern, *PatternMask;
        unsigned int InfoBuffer_MaskSize, PatternSize;
        int *retval;
        int NumberOfAddress, i;
        unsigned int j, CRCValue = 0;
        unsigned char HashCode = 0, FilterByte = 0;
        int BitMapIndex = 0;

        Ptr = ArrayPtr;

        while (*Ptr) {
                switch (*Ptr) {
                case DISABLE_BROADCAST:
                        mdlDisableReceiveBroadCast(pLayerPointers);
                        break;

                case ENABLE_BROADCAST:
                        mdlReceiveBroadCast(pLayerPointers);
                        break;

                case ENABLE_ALL_MULTICAST:
                        for (i = 0; i < 8; i++) {
                                pLayerPointers->pMdl->init_blk->LADRF[i] = 0xff;
                        }
                        WRITE_REG64(pLayerPointers,
                            (unsigned long)pLayerPointers->pMdl
                            ->Mem_Address + LADRF1,
                            (char *)pLayerPointers->pMdl->init_blk->LADRF);
                        break;

                case DISABLE_ALL_MULTICAST:
                        if (pLayerPointers->pMdl->EnableMulticast == 1) {
                                for (i = 0; i < 8; i++) {
                                        pLayerPointers->pMdl->init_blk
                                            ->LADRF[i] =
                                            pLayerPointers->pMdl->TempLADRF[i];
                                }
                        }

                        WRITE_REG64(pLayerPointers,
                            (unsigned long)pLayerPointers->pMdl->Mem_Address
                            + LADRF1,
                            (char *)pLayerPointers->pMdl->init_blk->LADRF);
                        break;


                case ADD_MULTICAST:
                        NumberOfAddress = *(++Ptr);
                        MulticastArray = (unsigned char *)(*(++Ptr));
                        mdlAddMulticastAddresses(pLayerPointers,
                            NumberOfAddress, MulticastArray);
                        break;


                case ENABLE_MULTICAST:
                        for (i = 0; i < 8; i++) {
                                pLayerPointers->pMdl->init_blk->LADRF[i]  =
                                    pLayerPointers->pMdl->TempLADRF[i];
                        }
                        pLayerPointers->pMdl->EnableMulticast = 1;

                        WRITE_REG64(pLayerPointers,
                            (unsigned long)pLayerPointers->pMdl->Mem_Address
                            + LADRF1,
                            (char *)pLayerPointers->pMdl->init_blk->LADRF);
                        break;

                case DISABLE_MULTICAST:
                        for (i = 0; i < 8; i++) {
                                pLayerPointers->pMdl->init_blk->LADRF[i] = 0;
                        }

                        pLayerPointers->pMdl->EnableMulticast = 0;

                        for (BitMapIndex = 0; BitMapIndex <
                            MULTICAST_BITMAP_ARRAY_SIZE; BitMapIndex++)
                                pLayerPointers->pMdl->MulticastBitMapArray
                                    [BitMapIndex] = 0;
                        WRITE_REG64(pLayerPointers,
                            (unsigned long)pLayerPointers->pMdl->Mem_Address
                            + LADRF1,
                            (char *)pLayerPointers->pMdl->init_blk->LADRF);
                        break;


                case ADD_WAKE_UP_PATTERN:
                        PatternMask = (unsigned char *)(*(++Ptr));
                        Pattern = (unsigned char *)(*(++Ptr));
                        InfoBuffer_MaskSize = (*(++Ptr));
                        PatternSize = (*(++Ptr));
                        retval = (int *)(*(++Ptr));

                        mdlAddWakeUpPattern(pLayerPointers,
                            PatternMask,
                            Pattern,
                            InfoBuffer_MaskSize,
                            PatternSize,
                            retval);
                        break;

                case REMOVE_WAKE_UP_PATTERN:
                        Pattern = (unsigned char *)(*(++Ptr));
                        PatternSize = *(++Ptr);
                        retval = (int *)(*(++Ptr));
                        mdlRemoveWakeUpPattern(pLayerPointers,
                            Pattern,
                            PatternSize,
                            retval);
                        break;

                case ENABLE_MAGIC_PACKET_WAKE_UP:
                        mdlEnableMagicPacketWakeUp(pLayerPointers);
                        break;

                case SET_SINGLE_MULTICAST:
                        NumberOfAddress = *(++Ptr);
                        MulticastArray = (unsigned char *)(*(++Ptr));

                        for (i = 0; i < 8; i++) {
                                pLayerPointers->pMdl->TempLADRF[i] =
                                    pLayerPointers->pMdl->init_blk->LADRF[i];
                        }
                        CRCValue = mdlCalculateCRC(ETH_LENGTH_OF_ADDRESS,
                            MulticastArray);
                        for (j = 0; j < 6; j++) {
                                HashCode = (HashCode << 1) +
                                    (((unsigned char)CRCValue >> j) & 0x01);
                        }
                        /*
                         * Bits 3-5 of HashCode point to byte in address
                         * filter.
                         * Bits 0-2 point to bit within that byte.
                         */
                        FilterByte = HashCode >> 3;
                        pLayerPointers->pMdl->TempLADRF[FilterByte] |=
                            (1 << (HashCode & 0x07));
                        break;

                case UNSET_SINGLE_MULTICAST:
                        NumberOfAddress = *(++Ptr);
                        MulticastArray = (unsigned char *)(*(++Ptr));
                        for (i = 0; i < 8; i++) {
                                pLayerPointers->pMdl->TempLADRF[i] =
                                    pLayerPointers->pMdl->init_blk->LADRF[i];
                        }
                        CRCValue = mdlCalculateCRC(ETH_LENGTH_OF_ADDRESS,
                            MulticastArray);
                        for (j = 0; j < 6; j++) {
                                HashCode = ((HashCode << 1) +
                                    (((unsigned char)CRCValue >> j) & 0x01));
                        }

                        /*
                         * Bits 3-5 of HashCode point to byte in address
                         * filter.
                         * Bits 0-2 point to bit within that byte.
                         */
                        FilterByte = HashCode >> 3;
                        pLayerPointers->pMdl->TempLADRF[FilterByte] &=
                            ~(1 << (HashCode & 0x07));
                        break;

                default:
                        break;
                }
                Ptr++;
        }
}


void
mdlAddMulticastAddresses(struct LayerPointers *pLayerPointers,
    int NumberOfAddress, unsigned char *MulticastAddresses)
{
        unsigned int j, CRCValue;
        unsigned char HashCode, FilterByte;
        int i;

        for (i = 0; i < 8; i++) {
                pLayerPointers->pMdl->TempLADRF[i]  = 0x00;
        }


        for (i = 0; i < NumberOfAddress; i++) {
                HashCode = 0;

                /* Calculate CRC value */
                CRCValue = mdlCalculateCRC(ETH_LENGTH_OF_ADDRESS,
                    MulticastAddresses);

                for (j = 0; j < 6; j++) {
                        HashCode = (HashCode << 1) +
                            (((unsigned char)CRCValue >> j) & 0x01);
                }

                /* Bits 3-5 of HashCode point to byte in address filter. */
                /* Bits 0-2 point to bit within that byte. */
                FilterByte = HashCode >> 3;
                pLayerPointers->pMdl->TempLADRF[FilterByte] |=
                    (1 << (HashCode & 0x07));
                MulticastAddresses += ETH_LENGTH_OF_ADDRESS;
        }
}

/* Receive all packets  */
void
mdlSetPromiscuous(struct LayerPointers *pLayerPointers)
{
        /*
         * Writable N == Can Be Written only when device is not running
         * (RUN == 0)
         */
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD2,
            VAL2 | PROM);
        pLayerPointers->pMdl->FLAGS |= PROM;    /* B16_MASK */
}

/* Stop Receiving all packets  */
void
mdlDisablePromiscuous(struct LayerPointers *pLayerPointers)
{
        /*
         * Writable N == Can Be Written only when device is not running
         * (RUN == 0)
         */
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD2,
            PROM);
        pLayerPointers->pMdl->FLAGS &= (~ PROM); /* B16_MASK */
}

/*
 * Disable Receive Broadcast. When set, disables the controller from receiving
 * broadcast messages. Used for protocols that do not support broadcast
 * addressing, except as a function of multicast.
 * DRCVBC is cleared by activation of H_RESET (broadcast messages will be
 * received) and is unaffected by the clearing of the RUN bit.
 */
static void
mdlReceiveBroadCast(struct LayerPointers *pLayerPointers)
{
        ULONG MappedMemBaseAddress;

        MappedMemBaseAddress = pLayerPointers->pMdl->Mem_Address;
        WRITE_REG32(pLayerPointers, MappedMemBaseAddress + CMD2, DRCVBC);
        pLayerPointers->pMdl->FLAGS |= DRCVBC;
}

static void
mdlDisableReceiveBroadCast(struct LayerPointers *pLayerPointers)
{
        ULONG MappedMemBaseAddress;

        MappedMemBaseAddress = pLayerPointers->pMdl->Mem_Address;
        WRITE_REG32(pLayerPointers, MappedMemBaseAddress + CMD2, VAL2 | DRCVBC);
        pLayerPointers->pMdl->FLAGS &= (~DRCVBC);
}

static void
mdlEnableMagicPacketWakeUp(struct LayerPointers *pLayerPointers)
{
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD3,
            VAL1 | MPPLBA);
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD7,
            VAL0 | MPEN_SW);
}

/*
 * BitMap for add/del the Multicast address Since more than one M/C address
 * can map to same bit in the filter matrix, we should maintain the count for
 * # of M/C addresses associated with each bit. Only when the bit<->count
 * becomes zero, we should go ahead with changing/reseting the bit, else just
 * reduce the count associated with each bit and return.
 */
static int
mdlMulticastBitMapping(struct LayerPointers *pLayerPointers,
    unsigned char *MulticastAddress, int FLAG)
{
        unsigned char HashCode, FilterByte;
        int j = 0, BitMapIndex = 0;
        unsigned int CRCValue = 0;

        HashCode = 0;
        /* Calculate the Bit Map location for the given Address */
        CRCValue = mdlCalculateCRC(ETH_LENGTH_OF_ADDRESS, MulticastAddress);
        for (j = 0; j < 6; j++) {
                HashCode = (HashCode << 1) +
                    (((unsigned char)CRCValue >> j) & 0x01);
        }

        /*
         * Bits 3-5 of HashCode point to byte in address filter.
         * Bits 0-2 point to bit within that byte.
         */
        FilterByte = HashCode & 0x38;
        FilterByte = FilterByte >> 3;
        BitMapIndex =  (int)FilterByte * 8 + (HashCode & 0x7);

        if (FLAG == DELETE_MULTICAST) {
                if ((pLayerPointers->pMdl->MulticastBitMapArray[BitMapIndex]
                    == 0) || (--pLayerPointers->pMdl->MulticastBitMapArray
                    [BitMapIndex] == 0)) {
                        return (0);
                } else {
                        return (-1);
                }
        }

        if (FLAG == ADD_MULTICAST) {
                if (pLayerPointers->pMdl
                    ->MulticastBitMapArray[BitMapIndex] > 0) {
                        pLayerPointers->pMdl
                            ->MulticastBitMapArray[BitMapIndex]++;
                        return (-1);
                } else if (pLayerPointers->pMdl
                    ->MulticastBitMapArray[BitMapIndex] == 0) {
                        pLayerPointers->pMdl
                            ->MulticastBitMapArray[BitMapIndex]++;
                        return (0);
                }
        }
        return (0);
}

/*
 * Set Interrupt Coalescing registers:
 *      To reduce the host CPU interrupt service overhead the network
 *      controller can be programmed to postpone the interrupt to the host
 *      CPU until either a programmable number of receive or transmit
 *      interrupt events have occurred or a programmable amount of time has
 *      elapsed since the first interrupt event occurred.
 */
void
SetIntrCoalesc(struct LayerPointers *pLayerPointers, boolean_t on)
{
        long MemBaseAddress = pLayerPointers->pMdl->Mem_Address;
        struct mdl *pMdl = 0;
        unsigned int timeout, event_count;

        pMdl = (struct mdl *)(pLayerPointers->pMdl);

        if (on) {
                /* Set Rx Interrupt Coalescing */
                timeout = pLayerPointers->pMdl->rx_intrcoalesc_time;
                event_count = 0;
                event_count |= pLayerPointers->pMdl->rx_intrcoalesc_events;
                if (timeout > 0x7ff) {
                        timeout = 0x7ff;
                }
                if (event_count > 0x1f) {
                        event_count = 0x1f;
                }

                event_count =  event_count << 16;
                WRITE_REG32(pLayerPointers, MemBaseAddress + DLY_INT_A,
                    DLY_INT_A_R0 | event_count | timeout);

        } else {
                /* Disable Software Timer Interrupt */
                WRITE_REG32(pLayerPointers, MemBaseAddress + STVAL, 0);
                WRITE_REG32(pLayerPointers, pMdl->Mem_Address + INTEN0,
                    STINTEN);

                WRITE_REG32(pLayerPointers, MemBaseAddress + DLY_INT_A, 0);
                WRITE_REG32(pLayerPointers, MemBaseAddress + DLY_INT_B, 0);
        }
}

void
mdlSendPause(struct LayerPointers *pLayerPointers)
{
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address
            + FLOW_CONTROL, VAL2 | FIXP | FCCMD | 0x200);
}

/* Reset all Tx descriptors and Tx buffers */
void
milResetTxQ(struct LayerPointers *pLayerPointers)
{
        struct nonphysical *pNonphysical = pLayerPointers->pMil->pNonphysical;
        int i;

        pNonphysical->TxDescQRead = pNonphysical->TxDescQStart;
        pNonphysical->TxDescQWrite = pNonphysical->TxDescQStart;

        /* Clean all Tx descriptors */
        for (i = 0; i < TX_RING_SIZE; i++) {
                pNonphysical->TxDescQWrite->Tx_OWN = 0;
                pNonphysical->TxDescQWrite->Tx_SOP = 0;
                pNonphysical->TxDescQWrite->Tx_EOP = 0;
                pNonphysical->TxDescQWrite++;
        }
        pNonphysical->TxDescQWrite = pNonphysical->TxDescQStart;

        /* Re-init Tx Buffers */
        pLayerPointers->pOdl->tx_buf.free =
            pLayerPointers->pOdl->tx_buf.msg_buf;
        pLayerPointers->pOdl->tx_buf.next =
            pLayerPointers->pOdl->tx_buf.msg_buf;
        pLayerPointers->pOdl->tx_buf.curr =
            pLayerPointers->pOdl->tx_buf.msg_buf;
}

/*
 *      Initialises the data used in Mil.
 */
void
milInitGlbds(struct LayerPointers *pLayerPointers)
{
        pLayerPointers->pMil->name = DEVICE_CHIPNAME;

        mdlInitGlbds(pLayerPointers);
}

/*
 *      Purpose  :
 *              Initialises the RxBufDescQ with the packet pointer and physical
 *              address filled in the FreeQ.
 *
 *      Arguments :
 *              pLayerPointers
 *                      Pointer to the Adapter structure.
 */
void
milInitRxQ(struct LayerPointers *pLayerPointers)
{
        struct mil *pMil = pLayerPointers->pMil;
        struct nonphysical *pNonphysical = pMil->pNonphysical;
        int i;

        pNonphysical->RxBufDescQRead->descriptor = pMil->Rx_desc;
        pNonphysical->RxBufDescQStart->descriptor = pMil->Rx_desc;
        pNonphysical->RxBufDescQEnd->descriptor =
            &(pMil->Rx_desc[pMil->RxRingSize - 1]);

        pNonphysical->RxBufDescQRead->USpaceMap = pMil->USpaceMapArray;
        pNonphysical->RxBufDescQStart->USpaceMap = pMil->USpaceMapArray;
        pNonphysical->RxBufDescQEnd->USpaceMap =
            &(pMil->USpaceMapArray[pMil->RxRingSize - 1]);

        /* Initialize the adapter rx descriptor Q and rx buffer Q */
        for (i = 0; i < pMil->RxRingSize; i++) {
                pNonphysical->RxBufDescQRead->descriptor->Rx_BCNT
                    = (unsigned)pMil->RxBufSize;

                *(pNonphysical->RxBufDescQRead->USpaceMap) =
                    (long)(pLayerPointers->pOdl->rx_buf.next->vir_addr);

                pNonphysical->RxBufDescQRead->descriptor->Rx_Base_Addr
                    = pLayerPointers->pOdl->rx_buf.next->phy_addr;

                pNonphysical->RxBufDescQRead->descriptor->Rx_OWN = 1;
                pNonphysical->RxBufDescQRead->descriptor++;
                pNonphysical->RxBufDescQRead->USpaceMap++;
                pLayerPointers->pOdl->rx_buf.next =
                    NEXT(pLayerPointers->pOdl->rx_buf, next);
        }

        pNonphysical->RxBufDescQRead->descriptor =
            pNonphysical->RxBufDescQStart->descriptor;
        pNonphysical->RxBufDescQRead->USpaceMap =
            pNonphysical->RxBufDescQStart->USpaceMap;
        pLayerPointers->pOdl->rx_buf.next =
            pLayerPointers->pOdl->rx_buf.msg_buf;
}

/*
 *      Purpose         :
 *              This array is filled with the size of the structure & its
 *              pointer for freeing purposes.
 *
 *      Arguments       :
 *              pLayerPointers
 *                      Pointer to the adapter structure.
 *              mem_free_array
 *                      Pointer to the array that holds the data required
 *                      for freeing.
 */
void
milFreeResources(struct LayerPointers *pLayerPointers, ULONG *mem_free_array)
{
        /* 1) For mil structure (pLayerPointers->pMil) */
        /* Type */
        *(mem_free_array) = VIRTUAL;
        /* Size */
        *(++mem_free_array) = sizeof (struct mil);
        /* VA */
        *(++mem_free_array) = (ULONG)pLayerPointers->pMil;


        /* 2) For USpaceMapArray queue */
        /* Type */
        *(++mem_free_array) = VIRTUAL;
        /* Size */
        *(++mem_free_array) = pLayerPointers->pMil->RxRingSize *
            sizeof (unsigned long);
        /* VA */
        *(++mem_free_array) = (ULONG)pLayerPointers->pMil->USpaceMapArray;


        /* 3) For non_physical structure */
        /* Type */
        *(++mem_free_array) = VIRTUAL;
        /* Size */
        *(++mem_free_array) =  sizeof (struct nonphysical);
        /* VA */
        *(++mem_free_array) = (ULONG)pLayerPointers->pMil->pNonphysical;

        /*
         * 4~6) For four allocation are for abstracting the Rx_Descritor ring
         */

        /* 4) Type */
        *(++mem_free_array) = VIRTUAL;
        /* Size */
        *(++mem_free_array) =  sizeof (struct Rx_Buf_Desc);
        /* VA */
        *(++mem_free_array) =
            (ULONG)pLayerPointers->pMil->pNonphysical->RxBufDescQRead;

        /* 5) Type */
        *(++mem_free_array) = VIRTUAL;
        /* Size */
        *(++mem_free_array) =  sizeof (struct Rx_Buf_Desc);
        /* VA */
        *(++mem_free_array) =
            (ULONG)pLayerPointers->pMil->pNonphysical->RxBufDescQStart;

        /* 6) Type */
        *(++mem_free_array) = VIRTUAL;
        /* Size */
        *(++mem_free_array) =  sizeof (struct Rx_Buf_Desc);
        /* VA */
        *(++mem_free_array) =
            (ULONG)pLayerPointers->pMil->pNonphysical->RxBufDescQEnd;

        *(++mem_free_array) = 0;

        mdlFreeResources(pLayerPointers, mem_free_array);
}



/*
 *      Purpose  :
 *              This array is filled with the size of the memory required for
 *              allocating purposes.
 *
 *      Arguments :
 *              pLayerPointers
 *                      Pointer to the adapter structure.
 *              mem_req_array
 *                      Pointer to the array that holds the data required for
 *                      allocating memory.
 */
void
milRequestResources(ULONG *mem_req_array)
{
        int RxRingSize;

        RxRingSize = RX_RING_SIZE;      /* 128 */

        /* 1) For mil structure (pLayerPointers->pMil) */
        /* Type */
        *mem_req_array   = VIRTUAL;
        /* Size */
        *(++mem_req_array) = sizeof (struct mil);

        /* 2) For USpaceMapArray queue (pLayerPointers->pMil->USpaceMapArray) */
        /* Type */
        *(++mem_req_array) = VIRTUAL;
        /* Size */
        *(++mem_req_array) = RxRingSize * sizeof (unsigned long);


        /* 3) For pNonphysical structure */
        /* Type */
        *(++mem_req_array) = VIRTUAL;
        /* Size */
        *(++mem_req_array) = sizeof (struct nonphysical);

        /*
         * 4~6) For four allocation are for abstracting the Rx_Descritor ring
         */
        /* 4) Type */
        *(++mem_req_array) = VIRTUAL;
        /* Size */
        *(++mem_req_array) = sizeof (struct Rx_Buf_Desc);

        /* 5) Type */
        *(++mem_req_array) = VIRTUAL;
        /* Size */
        *(++mem_req_array) = sizeof (struct Rx_Buf_Desc);

        /* 6) Type */
        *(++mem_req_array) = VIRTUAL;
        /* Size */
        *(++mem_req_array) = sizeof (struct Rx_Buf_Desc);

        *(++mem_req_array) = 0;

        mdlRequestResources(mem_req_array);
}



/*
 *      Purpose  :
 *              This array contains the details of the allocated memory. The
 *              pointers are taken from the respective locations in the array
 *              & assigne appropriately to the respective structures.
 *
 *      Arguments :
 *              pLayerPointers
 *                      Pointer to the adapter structure.
 *              pmem_set_array
 *                      Pointer to the array that holds the data after required
 *                      allocating memory.
 */
void
milSetResources(struct LayerPointers *pLayerPointers, ULONG *pmem_set_array)
{
        int RxRingSize, TxRingSize;
        int RxBufSize;
        struct mil *pMil;

        RxRingSize = RX_RING_SIZE;
        TxRingSize = TX_RING_SIZE;
        RxBufSize = RX_BUF_SIZE;

        /* 1) Set the pointers to the mil pointers */
        /* Type */
        pmem_set_array++;
        /* Size */
        pmem_set_array++;
        pMil = (struct mil *)(*pmem_set_array);
        pLayerPointers->pMil = pMil;

        pMil->RxRingSize = RxRingSize;
        pMil->TxRingSize = TxRingSize;
        pMil->RxBufSize = RxBufSize;

        /* 2) Type */
        pmem_set_array++;
        /* Size */
        pmem_set_array++;
        pmem_set_array++;
        pMil->USpaceMapArray = (long *)(*pmem_set_array);

        /* 3) Set the pointers to the NonPhysical part */
        /* Type */
        pmem_set_array++;
        /* Size */
        pmem_set_array++;
        /* Virtual Addr of NonPhysical */
        pmem_set_array++;
        pMil->pNonphysical =
            (struct nonphysical *)(*pmem_set_array);

        /*
         * 4~6) Following four allocation are for abstracting the Rx_Descritor
         * Ring.
         */
        /* 4) Type */
        pmem_set_array++;
        /* Size */
        pmem_set_array++;
        /* Virtual Addr of Abstracted RxDesc */
        pmem_set_array++;
        pMil->pNonphysical->RxBufDescQRead =
            (struct Rx_Buf_Desc *)(*pmem_set_array);

        /* 5) Type */
        pmem_set_array++;
        /* Size */
        pmem_set_array++;
        /* Virtual Addr of Abstracted RxDesc */
        pmem_set_array++;
        pMil->pNonphysical->RxBufDescQStart =
            (struct Rx_Buf_Desc *)(*pmem_set_array);

        /* 6) Type */
        pmem_set_array++;
        /* Size */
        pmem_set_array++;
        /* Virtual Addr of Abstracted RxDesc */
        pmem_set_array++;
        pMil->pNonphysical->RxBufDescQEnd =
            (struct Rx_Buf_Desc *)(*pmem_set_array);

        pmem_set_array++;

        mdlSetResources(pLayerPointers, pmem_set_array);
}

/*
 *      Purpose  :
 *              This routine adds the Multicast addresses to the filter
 *
 *      Arguments :
 *              pLayerPointers
 *                      Pointer to Layer pointers structure.
 *              pucMulticastAddress
 *                      Pointer to the array of multicast addresses
 */
void
mdlAddMulticastAddress(struct LayerPointers *pLayerPointers,
    UCHAR *pucMulticastAddress)
{
        unsigned long MODE[10];
        unsigned long tmp1;
        unsigned long tmp2;

        if (mdlMulticastBitMapping(pLayerPointers, pucMulticastAddress,
            ADD_MULTICAST) != 0)
                return;

        tmp2 = SET_SINGLE_MULTICAST;
        MODE[0] = (unsigned long)tmp2;
        MODE[1] = 1;
        tmp1 = (unsigned long)pucMulticastAddress;
        MODE[2] = tmp1;
        MODE[3] = ENABLE_MULTICAST;
        MODE[4] = 0;
        mdlChangeFilter(pLayerPointers, (unsigned long *)MODE);
}


/*
 *      Purpose  :
 *              This routine deletes the Multicast addresses requested by OS.
 *
 *      Arguments :
 *              pLayerPointers
 *                      Pointer to Layer pointers structure.
 *              pucMulticastAddress
 *                      Pointer to the array of multicast addresses
 */
void
mdlDeleteMulticastAddress(struct LayerPointers *pLayerPointers,
    UCHAR *pucMulticastAddress)
{
        unsigned long MODE[10];
        unsigned long tmp;

        if (mdlMulticastBitMapping(pLayerPointers, pucMulticastAddress,
            DELETE_MULTICAST) != 0)
                return;

        MODE[0] = UNSET_SINGLE_MULTICAST;
        MODE[1] = 1;
        tmp = (unsigned long)pucMulticastAddress;
        MODE[2] = tmp;
        MODE[3] = ENABLE_MULTICAST;
        MODE[4] = 0;
        mdlChangeFilter(pLayerPointers, (unsigned long *)MODE);
}

/*
 *      Purpose  :
 *              Calculates the CRC value over the input number of bytes.
 *
 *      Arguments :
 *              NumberOfBytes
 *                      The number of bytes in the input.
 *              Input
 *                      An input "string" to calculate a CRC over.
 */
static unsigned int
mdlCalculateCRC(unsigned int NumberOfBytes, unsigned char *Input)
{
        const unsigned int POLY = 0x04c11db7;
        unsigned int CRCValue = 0xffffffff;
        unsigned int CurrentBit, CurrentCRCHigh;
        unsigned char CurrentByte;

        for (; NumberOfBytes; NumberOfBytes--) {
                CurrentByte = *Input;
                Input++;

                for (CurrentBit = 8; CurrentBit; CurrentBit--) {
                        CurrentCRCHigh = CRCValue >> 31;
                        CRCValue <<= 1;

                        if (CurrentCRCHigh ^ (CurrentByte & 0x01)) {
                                CRCValue ^= POLY;
                                CRCValue |= 0x00000001;
                        }
                        CurrentByte >>= 1;
                }
        }
        return (CRCValue);
}

void
mdlRxFastSuspend(struct LayerPointers *pLayerPointers)
{
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD0,
            VAL0 | RX_FAST_SPND);
}

void
mdlRxFastSuspendClear(struct LayerPointers *pLayerPointers)
{
        WRITE_REG32(pLayerPointers, pLayerPointers->pMdl->Mem_Address + CMD0,
            RX_FAST_SPND);
}