intel.c

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/*
 * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 *
 * You can also choose to distribute this program under the terms of
 * the Unmodified Binary Distribution Licence (as given in the file
 * COPYING.UBDL), provided that you have satisfied its requirements.
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );

#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <byteswap.h>
#include <ipxe/netdevice.h>
#include <ipxe/ethernet.h>
#include <ipxe/if_ether.h>
#include <ipxe/iobuf.h>
#include <ipxe/dma.h>
#include <ipxe/pci.h>
#include <ipxe/profile.h>
#include "intel.h"

/** @file
 *
 * Intel 10/100/1000 network card driver
 *
 */

/** VM transmit profiler */
static struct profiler intel_vm_tx_profiler __profiler =
        { .name = "intel.vm_tx" };

/** VM receive refill profiler */
static struct profiler intel_vm_refill_profiler __profiler =
        { .name = "intel.vm_refill" };

/** VM poll profiler */
static struct profiler intel_vm_poll_profiler __profiler =
        { .name = "intel.vm_poll" };

/******************************************************************************
 *
 * EEPROM interface
 *
 ******************************************************************************
 */

/**
 * Read data from EEPROM
 *
 * @v nvs               NVS device
 * @v address           Address from which to read
 * @v data              Data buffer
 * @v len               Length of data buffer
 * @ret rc              Return status code
 */
static int intel_read_eeprom ( struct nvs_device *nvs, unsigned int address,
                               void *data, size_t len ) {
        struct intel_nic *intel =
                container_of ( nvs, struct intel_nic, eeprom );
        unsigned int i;
        uint32_t value;
        uint16_t *data_word = data;

        /* Sanity check.  We advertise a blocksize of one word, so
         * should only ever receive single-word requests.
         */
        assert ( len == sizeof ( *data_word ) );

        /* Initiate read */
        writel ( ( INTEL_EERD_START | ( address << intel->eerd_addr_shift ) ),
                 intel->regs + INTEL_EERD );

        /* Wait for read to complete */
        for ( i = 0 ; i < INTEL_EEPROM_MAX_WAIT_MS ; i++ ) {

                /* If read is not complete, delay 1ms and retry */
                value = readl ( intel->regs + INTEL_EERD );
                if ( ! ( value & intel->eerd_done ) ) {
                        mdelay ( 1 );
                        continue;
                }

                /* Extract data */
                *data_word = cpu_to_le16 ( INTEL_EERD_DATA ( value ) );
                return 0;
        }

        DBGC ( intel, "INTEL %p timed out waiting for EEPROM read\n", intel );
        return -ETIMEDOUT;
}

/**
 * Write data to EEPROM
 *
 * @v nvs               NVS device
 * @v address           Address to which to write
 * @v data              Data buffer
 * @v len               Length of data buffer
 * @ret rc              Return status code
 */
static int intel_write_eeprom ( struct nvs_device *nvs,
                                unsigned int address __unused,
                                const void *data __unused,
                                size_t len __unused ) {
        struct intel_nic *intel =
                container_of ( nvs, struct intel_nic, eeprom );

        DBGC ( intel, "INTEL %p EEPROM write not supported\n", intel );
        return -ENOTSUP;
}

/**
 * Initialise EEPROM
 *
 * @v intel             Intel device
 * @ret rc              Return status code
 */
static int intel_init_eeprom ( struct intel_nic *intel ) {
        unsigned int i;
        uint32_t value;

        /* The NIC automatically detects the type of attached EEPROM.
         * The EERD register provides access to only a single word at
         * a time, so we pretend to have a single-word block size.
         *
         * The EEPROM size may be larger than the minimum size, but
         * this doesn't matter to us since we access only the first
         * few words.
         */
        intel->eeprom.word_len_log2 = INTEL_EEPROM_WORD_LEN_LOG2;
        intel->eeprom.size = INTEL_EEPROM_MIN_SIZE_WORDS;
        intel->eeprom.block_size = 1;
        intel->eeprom.read = intel_read_eeprom;
        intel->eeprom.write = intel_write_eeprom;

        /* The layout of the EERD register was changed at some point
         * to accommodate larger EEPROMs.  Read from address zero (for
         * which the request layouts are compatible) to determine
         * which type of register we have.
         */
        writel ( INTEL_EERD_START, intel->regs + INTEL_EERD );
        for ( i = 0 ; i < INTEL_EEPROM_MAX_WAIT_MS ; i++ ) {
                value = readl ( intel->regs + INTEL_EERD );
                if ( value & INTEL_EERD_DONE_LARGE ) {
                        DBGC ( intel, "INTEL %p has large-format EERD\n",
                               intel );
                        intel->eerd_done = INTEL_EERD_DONE_LARGE;
                        intel->eerd_addr_shift = INTEL_EERD_ADDR_SHIFT_LARGE;
                        return 0;
                }
                if ( value & INTEL_EERD_DONE_SMALL ) {
                        DBGC ( intel, "INTEL %p has small-format EERD\n",
                               intel );
                        intel->eerd_done = INTEL_EERD_DONE_SMALL;
                        intel->eerd_addr_shift = INTEL_EERD_ADDR_SHIFT_SMALL;
                        return 0;
                }
                mdelay ( 1 );
        }

        DBGC ( intel, "INTEL %p timed out waiting for initial EEPROM read "
               "(value %08x)\n", intel, value );
        return -ETIMEDOUT;
}

/******************************************************************************
 *
 * MAC address
 *
 ******************************************************************************
 */

/**
 * Fetch initial MAC address from EEPROM
 *
 * @v intel             Intel device
 * @v hw_addr           Hardware address to fill in
 * @ret rc              Return status code
 */
static int intel_fetch_mac_eeprom ( struct intel_nic *intel,
                                    uint8_t *hw_addr ) {
        int rc;

        /* Initialise EEPROM */
        if ( ( rc = intel_init_eeprom ( intel ) ) != 0 )
                return rc;

        /* Read base MAC address from EEPROM */
        if ( ( rc = nvs_read ( &intel->eeprom, INTEL_EEPROM_MAC,
                               hw_addr, ETH_ALEN ) ) != 0 ) {
                DBGC ( intel, "INTEL %p could not read EEPROM base MAC "
                       "address: %s\n", intel, strerror ( rc ) );
                return rc;
        }

        /* Adjust MAC address for multi-port devices */
        hw_addr[ETH_ALEN-1] ^= intel->port;

        DBGC ( intel, "INTEL %p has EEPROM MAC address %s (port %d)\n",
               intel, eth_ntoa ( hw_addr ), intel->port );
        return 0;
}

/**
 * Fetch initial MAC address
 *
 * @v intel             Intel device
 * @v hw_addr           Hardware address to fill in
 * @ret rc              Return status code
 */
static int intel_fetch_mac ( struct intel_nic *intel, uint8_t *hw_addr ) {
        union intel_receive_address mac;
        int rc;

        /* Read current address from RAL0/RAH0 */
        mac.reg.low = cpu_to_le32 ( readl ( intel->regs + INTEL_RAL0 ) );
        mac.reg.high = cpu_to_le32 ( readl ( intel->regs + INTEL_RAH0 ) );
        DBGC ( intel, "INTEL %p has autoloaded MAC address %s\n",
               intel, eth_ntoa ( mac.raw ) );

        /* Use current address if valid */
        if ( is_valid_ether_addr ( mac.raw ) ) {
                memcpy ( hw_addr, mac.raw, ETH_ALEN );
                return 0;
        }

        /* Otherwise, try to read address from EEPROM */
        if ( ( rc = intel_fetch_mac_eeprom ( intel, hw_addr ) ) == 0 )
                return 0;

        DBGC ( intel, "INTEL %p has no MAC address to use\n", intel );
        return -ENOENT;
}

/******************************************************************************
 *
 * Device reset
 *
 ******************************************************************************
 */

/**
 * Reset hardware
 *
 * @v intel             Intel device
 * @ret rc              Return status code
 */
static int intel_reset ( struct intel_nic *intel ) {
        uint32_t pbs;
        uint32_t pba;
        uint32_t ctrl;
        uint32_t status;
        uint32_t orig_ctrl;
        uint32_t orig_status;

        /* Record initial control and status register values */
        orig_ctrl = ctrl = readl ( intel->regs + INTEL_CTRL );
        orig_status = readl ( intel->regs + INTEL_STATUS );

        /* Force RX and TX packet buffer allocation, to work around an
         * errata in ICH devices.
         */
        if ( intel->flags & INTEL_PBS_ERRATA ) {
                DBGC ( intel, "INTEL %p WARNING: applying ICH PBS/PBA errata\n",
                       intel );
                pbs = readl ( intel->regs + INTEL_PBS );
                pba = readl ( intel->regs + INTEL_PBA );
                writel ( 0x08, intel->regs + INTEL_PBA );
                writel ( 0x10, intel->regs + INTEL_PBS );
                DBGC ( intel, "INTEL %p PBS %#08x->%#08x PBA %#08x->%#08x\n",
                       intel, pbs, readl ( intel->regs + INTEL_PBS ),
                       pba, readl ( intel->regs + INTEL_PBA ) );
        }

        /* The Intel I210's packet buffer size registers reset only on
         * power up.  If an operating system changes these but then
         * the computer recieves a reset signal without losing power,
         * the registers will stay the same (but be incompatible with
         * other register defaults), thus making the device unable to
         * pass traffic.
         */
        if ( intel->flags & INTEL_PBSIZE_RST ) {
                writel ( INTEL_RXPBS_I210, intel->regs + INTEL_RXPBS );
                writel ( INTEL_TXPBS_I210, intel->regs + INTEL_TXPBS );
        }

        /* Always reset MAC.  Required to reset the TX and RX rings. */
        writel ( ( ctrl | INTEL_CTRL_RST ), intel->regs + INTEL_CTRL );
        mdelay ( INTEL_RESET_DELAY_MS );

        /* Set a sensible default configuration */
        if ( ! ( intel->flags & INTEL_NO_ASDE ) )
                ctrl |= INTEL_CTRL_ASDE;
        ctrl |= INTEL_CTRL_SLU;
        ctrl &= ~( INTEL_CTRL_LRST | INTEL_CTRL_FRCSPD | INTEL_CTRL_FRCDPLX );
        writel ( ctrl, intel->regs + INTEL_CTRL );
        mdelay ( INTEL_RESET_DELAY_MS );

        /* On some models (notably ICH), the PHY reset mechanism
         * appears to be broken.  In particular, the PHY_CTRL register
         * will be correctly loaded from NVM but the values will not
         * be propagated to the "OEM bits" PHY register.  This
         * typically has the effect of dropping the link speed to
         * 10Mbps.
         *
         * Work around this problem by skipping the PHY reset if
         * either (a) the link is already up, or (b) this particular
         * NIC is known to be broken.
         */
        status = readl ( intel->regs + INTEL_STATUS );
        if ( ( intel->flags & INTEL_NO_PHY_RST ) ||
             ( status & INTEL_STATUS_LU ) ) {
                DBGC ( intel, "INTEL %p %sMAC reset (%08x/%08x was "
                       "%08x/%08x)\n", intel,
                       ( ( intel->flags & INTEL_NO_PHY_RST ) ? "forced " : "" ),
                       ctrl, status, orig_ctrl, orig_status );
                return 0;
        }

        /* Reset PHY and MAC simultaneously */
        writel ( ( ctrl | INTEL_CTRL_RST | INTEL_CTRL_PHY_RST ),
                 intel->regs + INTEL_CTRL );
        mdelay ( INTEL_RESET_DELAY_MS );

        /* PHY reset is not self-clearing on all models */
        writel ( ctrl, intel->regs + INTEL_CTRL );
        mdelay ( INTEL_RESET_DELAY_MS );
        status = readl ( intel->regs + INTEL_STATUS );

        DBGC ( intel, "INTEL %p MAC+PHY reset (%08x/%08x was %08x/%08x)\n",
               intel, ctrl, status, orig_ctrl, orig_status );
        return 0;
}

/******************************************************************************
 *
 * Link state
 *
 ******************************************************************************
 */

/**
 * Check link state
 *
 * @v netdev            Network device
 */
static void intel_check_link ( struct net_device *netdev ) {
        struct intel_nic *intel = netdev->priv;
        uint32_t status;

        /* Read link status */
        status = readl ( intel->regs + INTEL_STATUS );
        DBGC ( intel, "INTEL %p link status is %08x\n", intel, status );

        /* Update network device */
        if ( status & INTEL_STATUS_LU ) {
                netdev_link_up ( netdev );
        } else {
                netdev_link_down ( netdev );
        }
}

/******************************************************************************
 *
 * Descriptors
 *
 ******************************************************************************
 */

/**
 * Populate transmit descriptor
 *
 * @v tx                Transmit descriptor
 * @v addr              Data buffer address
 * @v len               Length of data
 */
void intel_describe_tx ( struct intel_descriptor *tx, physaddr_t addr,
                         size_t len ) {

        /* Populate transmit descriptor */
        tx->address = cpu_to_le64 ( addr );
        tx->length = cpu_to_le16 ( len );
        tx->flags = 0;
        tx->command = ( INTEL_DESC_CMD_RS | INTEL_DESC_CMD_IFCS |
                        INTEL_DESC_CMD_EOP );
        tx->status = 0;
}

/**
 * Populate advanced transmit descriptor
 *
 * @v tx                Transmit descriptor
 * @v addr              Data buffer address
 * @v len               Length of data
 */
void intel_describe_tx_adv ( struct intel_descriptor *tx, physaddr_t addr,
                             size_t len ) {

        /* Populate advanced transmit descriptor */
        tx->address = cpu_to_le64 ( addr );
        tx->length = cpu_to_le16 ( len );
        tx->flags = INTEL_DESC_FL_DTYP_DATA;
        tx->command = ( INTEL_DESC_CMD_DEXT | INTEL_DESC_CMD_RS |
                        INTEL_DESC_CMD_IFCS | INTEL_DESC_CMD_EOP );
        tx->status = cpu_to_le32 ( INTEL_DESC_STATUS_PAYLEN ( len ) );
}

/**
 * Populate receive descriptor
 *
 * @v rx                Receive descriptor
 * @v addr              Data buffer address
 * @v len               Length of data
 */
void intel_describe_rx ( struct intel_descriptor *rx, physaddr_t addr,
                         size_t len __unused ) {

        /* Populate transmit descriptor */
        rx->address = cpu_to_le64 ( addr );
        rx->length = 0;
        rx->status = 0;
}

/******************************************************************************
 *
 * Network device interface
 *
 ******************************************************************************
 */

/**
 * Disable descriptor ring
 *
 * @v intel             Intel device
 * @v reg               Register block
 * @ret rc              Return status code
 */
static int intel_disable_ring ( struct intel_nic *intel, unsigned int reg ) {
        uint32_t dctl;
        unsigned int i;

        /* Disable ring */
        writel ( 0, ( intel->regs + reg + INTEL_xDCTL ) );

        /* Wait for disable to complete */
        for ( i = 0 ; i < INTEL_DISABLE_MAX_WAIT_MS ; i++ ) {

                /* Check if ring is disabled */
                dctl = readl ( intel->regs + reg + INTEL_xDCTL );
                if ( ! ( dctl & INTEL_xDCTL_ENABLE ) )
                        return 0;

                /* Delay */
                mdelay ( 1 );
        }

        DBGC ( intel, "INTEL %p ring %05x timed out waiting for disable "
               "(dctl %08x)\n", intel, reg, dctl );
        return -ETIMEDOUT;
}

/**
 * Reset descriptor ring
 *
 * @v intel             Intel device
 * @v reg               Register block
 * @ret rc              Return status code
 */
void intel_reset_ring ( struct intel_nic *intel, unsigned int reg ) {

        /* Disable ring.  Ignore errors and continue to reset the ring anyway */
        intel_disable_ring ( intel, reg );

        /* Clear ring length */
        writel ( 0, ( intel->regs + reg + INTEL_xDLEN ) );

        /* Clear ring address */
        writel ( 0, ( intel->regs + reg + INTEL_xDBAH ) );
        writel ( 0, ( intel->regs + reg + INTEL_xDBAL ) );

        /* Reset head and tail pointers */
        writel ( 0, ( intel->regs + reg + INTEL_xDH ) );
        writel ( 0, ( intel->regs + reg + INTEL_xDT ) );
}

/**
 * Create descriptor ring
 *
 * @v intel             Intel device
 * @v ring              Descriptor ring
 * @ret rc              Return status code
 */
int intel_create_ring ( struct intel_nic *intel, struct intel_ring *ring ) {
        physaddr_t address;
        uint32_t dctl;

        /* Allocate descriptor ring.  Align ring on its own size to
         * prevent any possible page-crossing errors due to hardware
         * errata.
         */
        ring->desc = dma_alloc ( intel->dma, &ring->map, ring->len,
                                 ring->len );
        if ( ! ring->desc )
                return -ENOMEM;

        /* Initialise descriptor ring */
        memset ( ring->desc, 0, ring->len );

        /* Program ring address */
        address = dma ( &ring->map, ring->desc );
        writel ( ( address & 0xffffffffUL ),
                 ( intel->regs + ring->reg + INTEL_xDBAL ) );
        if ( sizeof ( physaddr_t ) > sizeof ( uint32_t ) ) {
                writel ( ( ( ( uint64_t ) address ) >> 32 ),
                         ( intel->regs + ring->reg + INTEL_xDBAH ) );
        } else {
                writel ( 0, intel->regs + ring->reg + INTEL_xDBAH );
        }

        /* Program ring length */
        writel ( ring->len, ( intel->regs + ring->reg + INTEL_xDLEN ) );

        /* Reset head and tail pointers */
        writel ( 0, ( intel->regs + ring->reg + INTEL_xDH ) );
        writel ( 0, ( intel->regs + ring->reg + INTEL_xDT ) );

        /* Enable ring */
        dctl = readl ( intel->regs + ring->reg + INTEL_xDCTL );
        dctl |= INTEL_xDCTL_ENABLE;
        writel ( dctl, intel->regs + ring->reg + INTEL_xDCTL );

        DBGC ( intel, "INTEL %p ring %05x is at [%08lx,%08lx)\n",
               intel, ring->reg, virt_to_phys ( ring->desc ),
               ( virt_to_phys ( ring->desc ) + ring->len ) );

        return 0;
}

/**
 * Destroy descriptor ring
 *
 * @v intel             Intel device
 * @v ring              Descriptor ring
 */
void intel_destroy_ring ( struct intel_nic *intel, struct intel_ring *ring ) {

        /* Reset ring */
        intel_reset_ring ( intel, ring->reg );

        /* Free descriptor ring */
        dma_free ( &ring->map, ring->desc, ring->len );
        ring->desc = NULL;
        ring->prod = 0;
        ring->cons = 0;
}

/**
 * Refill receive descriptor ring
 *
 * @v intel             Intel device
 */
void intel_refill_rx ( struct intel_nic *intel ) {
        struct intel_descriptor *rx;
        struct io_buffer *iobuf;
        unsigned int rx_idx;
        unsigned int rx_tail;
        unsigned int refilled = 0;

        /* Refill ring */
        while ( ( intel->rx.prod - intel->rx.cons ) < INTEL_RX_FILL ) {

                /* Allocate I/O buffer */
                iobuf = alloc_rx_iob ( INTEL_RX_MAX_LEN, intel->dma );
                if ( ! iobuf ) {
                        /* Wait for next refill */
                        break;
                }

                /* Get next receive descriptor */
                rx_idx = ( intel->rx.prod++ % INTEL_NUM_RX_DESC );
                rx = &intel->rx.desc[rx_idx];

                /* Populate receive descriptor */
                intel->rx.describe ( rx, iob_dma ( iobuf ), 0 );

                /* Record I/O buffer */
                assert ( intel->rx_iobuf[rx_idx] == NULL );
                intel->rx_iobuf[rx_idx] = iobuf;

                DBGC2 ( intel, "INTEL %p RX %d is [%lx,%lx)\n",
                        intel, rx_idx, virt_to_phys ( iobuf->data ),
                        ( virt_to_phys ( iobuf->data ) + INTEL_RX_MAX_LEN ) );
                refilled++;
        }

        /* Push descriptors to card, if applicable */
        if ( refilled ) {
                wmb();
                rx_tail = ( intel->rx.prod % INTEL_NUM_RX_DESC );
                profile_start ( &intel_vm_refill_profiler );
                writel ( rx_tail, intel->regs + intel->rx.reg + INTEL_xDT );
                profile_stop ( &intel_vm_refill_profiler );
                profile_exclude ( &intel_vm_refill_profiler );
        }
}

/**
 * Discard unused receive I/O buffers
 *
 * @v intel             Intel device
 */
void intel_empty_rx ( struct intel_nic *intel ) {
        unsigned int i;

        /* Discard unused receive buffers */
        for ( i = 0 ; i < INTEL_NUM_RX_DESC ; i++ ) {
                if ( intel->rx_iobuf[i] )
                        free_rx_iob ( intel->rx_iobuf[i] );
                intel->rx_iobuf[i] = NULL;
        }
}

/**
 * Open network device
 *
 * @v netdev            Network device
 * @ret rc              Return status code
 */
static int intel_open ( struct net_device *netdev ) {
        struct intel_nic *intel = netdev->priv;
        union intel_receive_address mac;
        uint32_t fextnvm11;
        uint32_t tctl;
        uint32_t rctl;
        int rc;

        /* Set undocumented bit in FEXTNVM11 to work around an errata
         * in i219 devices that will otherwise cause a complete
         * datapath hang at the next device reset.
         */
        if ( intel->flags & INTEL_RST_HANG ) {
                DBGC ( intel, "INTEL %p WARNING: applying reset hang "
                       "workaround\n", intel );
                fextnvm11 = readl ( intel->regs + INTEL_FEXTNVM11 );
                fextnvm11 |= INTEL_FEXTNVM11_WTF;
                writel ( fextnvm11, intel->regs + INTEL_FEXTNVM11 );
        }

        /* Create transmit descriptor ring */
        if ( ( rc = intel_create_ring ( intel, &intel->tx ) ) != 0 )
                goto err_create_tx;

        /* Create receive descriptor ring */
        if ( ( rc = intel_create_ring ( intel, &intel->rx ) ) != 0 )
                goto err_create_rx;

        /* Program MAC address */
        memset ( &mac, 0, sizeof ( mac ) );
        memcpy ( mac.raw, netdev->ll_addr, sizeof ( mac.raw ) );
        writel ( le32_to_cpu ( mac.reg.low ), intel->regs + INTEL_RAL0 );
        writel ( ( le32_to_cpu ( mac.reg.high ) | INTEL_RAH0_AV ),
                 intel->regs + INTEL_RAH0 );

        /* Enable transmitter  */
        tctl = readl ( intel->regs + INTEL_TCTL );
        tctl &= ~( INTEL_TCTL_CT_MASK | INTEL_TCTL_COLD_MASK );
        tctl |= ( INTEL_TCTL_EN | INTEL_TCTL_PSP | INTEL_TCTL_CT_DEFAULT |
                  INTEL_TCTL_COLD_DEFAULT );
        writel ( tctl, intel->regs + INTEL_TCTL );

        /* Enable receiver */
        rctl = readl ( intel->regs + INTEL_RCTL );
        rctl &= ~( INTEL_RCTL_BSIZE_BSEX_MASK );
        rctl |= ( INTEL_RCTL_EN | INTEL_RCTL_UPE | INTEL_RCTL_MPE |
                  INTEL_RCTL_BAM | INTEL_RCTL_BSIZE_2048 | INTEL_RCTL_SECRC );
        writel ( rctl, intel->regs + INTEL_RCTL );

        /* Fill receive ring */
        intel_refill_rx ( intel );

        /* Update link state */
        intel_check_link ( netdev );

        /* Apply required errata */
        if ( intel->flags & INTEL_VMWARE ) {
                DBGC ( intel, "INTEL %p applying VMware errata workaround\n",
                       intel );
                intel->force_icr = INTEL_IRQ_RXT0;
        }

        return 0;

        intel_destroy_ring ( intel, &intel->rx );
 err_create_rx:
        intel_destroy_ring ( intel, &intel->tx );
 err_create_tx:
        return rc;
}

/**
 * Close network device
 *
 * @v netdev            Network device
 */
static void intel_close ( struct net_device *netdev ) {
        struct intel_nic *intel = netdev->priv;

        /* Disable receiver */
        writel ( 0, intel->regs + INTEL_RCTL );

        /* Disable transmitter  */
        writel ( 0, intel->regs + INTEL_TCTL );

        /* Destroy receive descriptor ring */
        intel_destroy_ring ( intel, &intel->rx );

        /* Discard any unused receive buffers */
        intel_empty_rx ( intel );

        /* Destroy transmit descriptor ring */
        intel_destroy_ring ( intel, &intel->tx );

        /* Reset the NIC, to flush the transmit and receive FIFOs */
        intel_reset ( intel );
}

/**
 * Transmit packet
 *
 * @v netdev            Network device
 * @v iobuf             I/O buffer
 * @ret rc              Return status code
 */
int intel_transmit ( struct net_device *netdev, struct io_buffer *iobuf ) {
        struct intel_nic *intel = netdev->priv;
        struct intel_descriptor *tx;
        unsigned int tx_idx;
        unsigned int tx_tail;
        size_t len;

        /* Get next transmit descriptor */
        if ( ( intel->tx.prod - intel->tx.cons ) >= INTEL_TX_FILL ) {
                DBGC ( intel, "INTEL %p out of transmit descriptors\n", intel );
                return -ENOBUFS;
        }
        tx_idx = ( intel->tx.prod++ % INTEL_NUM_TX_DESC );
        tx_tail = ( intel->tx.prod % INTEL_NUM_TX_DESC );
        tx = &intel->tx.desc[tx_idx];

        /* Populate transmit descriptor */
        len = iob_len ( iobuf );
        intel->tx.describe ( tx, iob_dma ( iobuf ), len );
        wmb();

        /* Notify card that there are packets ready to transmit */
        profile_start ( &intel_vm_tx_profiler );
        writel ( tx_tail, intel->regs + intel->tx.reg + INTEL_xDT );
        profile_stop ( &intel_vm_tx_profiler );
        profile_exclude ( &intel_vm_tx_profiler );

        DBGC2 ( intel, "INTEL %p TX %d is [%lx,%lx)\n",
                intel, tx_idx, virt_to_phys ( iobuf->data ),
                ( virt_to_phys ( iobuf->data ) + len ) );

        return 0;
}

/**
 * Poll for completed packets
 *
 * @v netdev            Network device
 */
void intel_poll_tx ( struct net_device *netdev ) {
        struct intel_nic *intel = netdev->priv;
        struct intel_descriptor *tx;
        unsigned int tx_idx;

        /* Check for completed packets */
        while ( intel->tx.cons != intel->tx.prod ) {

                /* Get next transmit descriptor */
                tx_idx = ( intel->tx.cons % INTEL_NUM_TX_DESC );
                tx = &intel->tx.desc[tx_idx];

                /* Stop if descriptor is still in use */
                if ( ! ( tx->status & cpu_to_le32 ( INTEL_DESC_STATUS_DD ) ) )
                        return;

                DBGC2 ( intel, "INTEL %p TX %d complete\n", intel, tx_idx );

                /* Complete TX descriptor */
                netdev_tx_complete_next ( netdev );
                intel->tx.cons++;
        }
}

/**
 * Poll for received packets
 *
 * @v netdev            Network device
 */
void intel_poll_rx ( struct net_device *netdev ) {
        struct intel_nic *intel = netdev->priv;
        struct intel_descriptor *rx;
        struct io_buffer *iobuf;
        unsigned int rx_idx;
        size_t len;

        /* Check for received packets */
        while ( intel->rx.cons != intel->rx.prod ) {

                /* Get next receive descriptor */
                rx_idx = ( intel->rx.cons % INTEL_NUM_RX_DESC );
                rx = &intel->rx.desc[rx_idx];

                /* Stop if descriptor is still in use */
                if ( ! ( rx->status & cpu_to_le32 ( INTEL_DESC_STATUS_DD ) ) )
                        return;

                /* Populate I/O buffer */
                iobuf = intel->rx_iobuf[rx_idx];
                intel->rx_iobuf[rx_idx] = NULL;
                len = le16_to_cpu ( rx->length );
                iob_put ( iobuf, len );

                /* Hand off to network stack */
                if ( rx->status & cpu_to_le32 ( INTEL_DESC_STATUS_RXE ) ) {
                        DBGC ( intel, "INTEL %p RX %d error (length %zd, "
                               "status %08x)\n", intel, rx_idx, len,
                               le32_to_cpu ( rx->status ) );
                        netdev_rx_err ( netdev, iobuf, -EIO );
                } else {
                        DBGC2 ( intel, "INTEL %p RX %d complete (length %zd)\n",
                                intel, rx_idx, len );
                        netdev_rx ( netdev, iobuf );
                }
                intel->rx.cons++;
        }
}

/**
 * Poll for completed and received packets
 *
 * @v netdev            Network device
 */
static void intel_poll ( struct net_device *netdev ) {
        struct intel_nic *intel = netdev->priv;
        uint32_t icr;

        /* Check for and acknowledge interrupts */
        profile_start ( &intel_vm_poll_profiler );
        icr = readl ( intel->regs + INTEL_ICR );
        profile_stop ( &intel_vm_poll_profiler );
        profile_exclude ( &intel_vm_poll_profiler );
        icr |= intel->force_icr;
        if ( ! icr )
                return;

        /* Poll for TX completions, if applicable */
        if ( icr & INTEL_IRQ_TXDW )
                intel_poll_tx ( netdev );

        /* Poll for RX completions, if applicable */
        if ( icr & ( INTEL_IRQ_RXT0 | INTEL_IRQ_RXO ) )
                intel_poll_rx ( netdev );

        /* Report receive overruns */
        if ( icr & INTEL_IRQ_RXO )
                netdev_rx_err ( netdev, NULL, -ENOBUFS );

        /* Check link state, if applicable */
        if ( icr & INTEL_IRQ_LSC )
                intel_check_link ( netdev );

        /* Check for unexpected interrupts */
        if ( icr & ~( INTEL_IRQ_TXDW | INTEL_IRQ_TXQE | INTEL_IRQ_LSC |
                      INTEL_IRQ_RXDMT0 | INTEL_IRQ_RXT0 | INTEL_IRQ_RXO ) ) {
                DBGC ( intel, "INTEL %p unexpected ICR %08x\n", intel, icr );
                /* Report as a TX error */
                netdev_tx_err ( netdev, NULL, -ENOTSUP );
        }

        /* Refill RX ring */
        intel_refill_rx ( intel );
}

/**
 * Enable or disable interrupts
 *
 * @v netdev            Network device
 * @v enable            Interrupts should be enabled
 */
static void intel_irq ( struct net_device *netdev, int enable ) {
        struct intel_nic *intel = netdev->priv;
        uint32_t mask;

        mask = ( INTEL_IRQ_TXDW | INTEL_IRQ_LSC | INTEL_IRQ_RXT0 );
        if ( enable ) {
                writel ( mask, intel->regs + INTEL_IMS );
        } else {
                writel ( mask, intel->regs + INTEL_IMC );
        }
}

/** Intel network device operations */
static struct net_device_operations intel_operations = {
        .open           = intel_open,
        .close          = intel_close,
        .transmit       = intel_transmit,
        .poll           = intel_poll,
        .irq            = intel_irq,
};

/******************************************************************************
 *
 * PCI interface
 *
 ******************************************************************************
 */

/**
 * Probe PCI device
 *
 * @v pci               PCI device
 * @ret rc              Return status code
 */
static int intel_probe ( struct pci_device *pci ) {
        struct net_device *netdev;
        struct intel_nic *intel;
        int rc;

        /* Allocate and initialise net device */
        netdev = alloc_etherdev ( sizeof ( *intel ) );
        if ( ! netdev ) {
                rc = -ENOMEM;
                goto err_alloc;
        }
        netdev_init ( netdev, &intel_operations );
        intel = netdev->priv;
        pci_set_drvdata ( pci, netdev );
        netdev->dev = &pci->dev;
        memset ( intel, 0, sizeof ( *intel ) );
        intel->port = PCI_FUNC ( pci->busdevfn );
        intel->flags = pci->id->driver_data;
        intel_init_ring ( &intel->tx, INTEL_NUM_TX_DESC, INTEL_TD,
                          intel_describe_tx );
        intel_init_ring ( &intel->rx, INTEL_NUM_RX_DESC, INTEL_RD,
                          intel_describe_rx );

        /* Fix up PCI device */
        adjust_pci_device ( pci );

        /* Map registers */
        intel->regs = pci_ioremap ( pci, pci->membase, INTEL_BAR_SIZE );
        if ( ! intel->regs ) {
                rc = -ENODEV;
                goto err_ioremap;
        }

        /* Configure DMA */
        intel->dma = &pci->dma;
        dma_set_mask_64bit ( intel->dma );
        netdev->dma = intel->dma;

        /* Reset the NIC */
        if ( ( rc = intel_reset ( intel ) ) != 0 )
                goto err_reset;

        /* Fetch MAC address */
        if ( ( rc = intel_fetch_mac ( intel, netdev->hw_addr ) ) != 0 )
                goto err_fetch_mac;

        /* Register network device */
        if ( ( rc = register_netdev ( netdev ) ) != 0 )
                goto err_register_netdev;

        /* Set initial link state */
        intel_check_link ( netdev );

        return 0;

        unregister_netdev ( netdev );
 err_register_netdev:
 err_fetch_mac:
        intel_reset ( intel );
 err_reset:
        iounmap ( intel->regs );
 err_ioremap:
        netdev_nullify ( netdev );
        netdev_put ( netdev );
 err_alloc:
        return rc;
}

/**
 * Remove PCI device
 *
 * @v pci               PCI device
 */
static void intel_remove ( struct pci_device *pci ) {
        struct net_device *netdev = pci_get_drvdata ( pci );
        struct intel_nic *intel = netdev->priv;

        /* Unregister network device */
        unregister_netdev ( netdev );

        /* Reset the NIC */
        intel_reset ( intel );

        /* Free network device */
        iounmap ( intel->regs );
        netdev_nullify ( netdev );
        netdev_put ( netdev );
}

/** Intel PCI device IDs */
static struct pci_device_id intel_nics[] = {
        PCI_ROM ( 0x8086, 0x0438, "dh8900cc", "DH8900CC", 0 ),
        PCI_ROM ( 0x8086, 0x043a, "dh8900cc-f", "DH8900CC Fiber", 0 ),
        PCI_ROM ( 0x8086, 0x043c, "dh8900cc-b", "DH8900CC Backplane", 0 ),
        PCI_ROM ( 0x8086, 0x0440, "dh8900cc-s", "DH8900CC SFP", 0 ),
        PCI_ROM ( 0x8086, 0x0d4c, "i219lm-11", "I219-LM (11)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x0d4d, "i219v-11", "I219-V (11)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x0d4e, "i219lm-10", "I219-LM (10)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x0d4f, "i219v-10", "I219-V (10)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x0d53, "i219lm-12", "I219-LM (12)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x0d55, "i219v-12", "I219-V (12)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x0dc5, "i219lm-23", "I219-LM (23)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x1000, "82542-f", "82542 (Fiber)", 0 ),
        PCI_ROM ( 0x8086, 0x1001, "82543gc-f", "82543GC (Fiber)", 0 ),
        PCI_ROM ( 0x8086, 0x1004, "82543gc", "82543GC (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x1008, "82544ei", "82544EI (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x1009, "82544ei-f", "82544EI (Fiber)", 0 ),
        PCI_ROM ( 0x8086, 0x100c, "82544gc", "82544GC (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x100d, "82544gc-l", "82544GC (LOM)", 0 ),
        PCI_ROM ( 0x8086, 0x100e, "82540em", "82540EM", 0 ),
        PCI_ROM ( 0x8086, 0x100f, "82545em", "82545EM (Copper)", INTEL_VMWARE ),
        PCI_ROM ( 0x8086, 0x1010, "82546eb", "82546EB (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x1011, "82545em-f", "82545EM (Fiber)", 0 ),
        PCI_ROM ( 0x8086, 0x1012, "82546eb-f", "82546EB (Fiber)", 0 ),
        PCI_ROM ( 0x8086, 0x1013, "82541ei", "82541EI", 0 ),
        PCI_ROM ( 0x8086, 0x1014, "82541er", "82541ER", 0 ),
        PCI_ROM ( 0x8086, 0x1015, "82540em-l", "82540EM (LOM)", 0 ),
        PCI_ROM ( 0x8086, 0x1016, "82540ep-m", "82540EP (Mobile)", 0 ),
        PCI_ROM ( 0x8086, 0x1017, "82540ep", "82540EP", 0 ),
        PCI_ROM ( 0x8086, 0x1018, "82541ei", "82541EI", 0 ),
        PCI_ROM ( 0x8086, 0x1019, "82547ei", "82547EI", 0 ),
        PCI_ROM ( 0x8086, 0x101a, "82547ei-m", "82547EI (Mobile)", 0 ),
        PCI_ROM ( 0x8086, 0x101d, "82546eb", "82546EB", 0 ),
        PCI_ROM ( 0x8086, 0x101e, "82540ep-m", "82540EP (Mobile)", 0 ),
        PCI_ROM ( 0x8086, 0x1026, "82545gm", "82545GM", 0 ),
        PCI_ROM ( 0x8086, 0x1027, "82545gm-1", "82545GM", 0 ),
        PCI_ROM ( 0x8086, 0x1028, "82545gm-2", "82545GM", 0 ),
        PCI_ROM ( 0x8086, 0x1049, "82566mm", "82566MM", INTEL_PBS_ERRATA ),
        PCI_ROM ( 0x8086, 0x104a, "82566dm", "82566DM", INTEL_PBS_ERRATA ),
        PCI_ROM ( 0x8086, 0x104b, "82566dc", "82566DC", INTEL_PBS_ERRATA ),
        PCI_ROM ( 0x8086, 0x104c, "82562v", "82562V", INTEL_PBS_ERRATA ),
        PCI_ROM ( 0x8086, 0x104d, "82566mc", "82566MC", INTEL_PBS_ERRATA ),
        PCI_ROM ( 0x8086, 0x105e, "82571eb", "82571EB", 0 ),
        PCI_ROM ( 0x8086, 0x105f, "82571eb-1", "82571EB", 0 ),
        PCI_ROM ( 0x8086, 0x1060, "82571eb-2", "82571EB", 0 ),
        PCI_ROM ( 0x8086, 0x1075, "82547gi", "82547GI", 0 ),
        PCI_ROM ( 0x8086, 0x1076, "82541gi", "82541GI", 0 ),
        PCI_ROM ( 0x8086, 0x1077, "82541gi-1", "82541GI", 0 ),
        PCI_ROM ( 0x8086, 0x1078, "82541er", "82541ER", 0 ),
        PCI_ROM ( 0x8086, 0x1079, "82546gb", "82546GB", 0 ),
        PCI_ROM ( 0x8086, 0x107a, "82546gb-1", "82546GB", 0 ),
        PCI_ROM ( 0x8086, 0x107b, "82546gb-2", "82546GB", 0 ),
        PCI_ROM ( 0x8086, 0x107c, "82541pi", "82541PI", 0 ),
        PCI_ROM ( 0x8086, 0x107d, "82572ei", "82572EI (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x107e, "82572ei-f", "82572EI (Fiber)", 0 ),
        PCI_ROM ( 0x8086, 0x107f, "82572ei", "82572EI", 0 ),
        PCI_ROM ( 0x8086, 0x108a, "82546gb-3", "82546GB", 0 ),
        PCI_ROM ( 0x8086, 0x108b, "82573v", "82573V (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x108c, "82573e", "82573E (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x1096, "80003es2lan", "80003ES2LAN (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x1098, "80003es2lan-s", "80003ES2LAN (Serdes)", 0 ),
        PCI_ROM ( 0x8086, 0x1099, "82546gb-4", "82546GB (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x109a, "82573l", "82573L", 0 ),
        PCI_ROM ( 0x8086, 0x10a4, "82571eb", "82571EB", 0 ),
        PCI_ROM ( 0x8086, 0x10a5, "82571eb", "82571EB (Fiber)", 0 ),
        PCI_ROM ( 0x8086, 0x10a7, "82575eb", "82575EB", 0 ),
        PCI_ROM ( 0x8086, 0x10a9, "82575eb", "82575EB Backplane", 0 ),
        PCI_ROM ( 0x8086, 0x10b5, "82546gb", "82546GB (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x10b9, "82572ei", "82572EI (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x10ba, "80003es2lan", "80003ES2LAN (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x10bb, "80003es2lan", "80003ES2LAN (Serdes)", 0 ),
        PCI_ROM ( 0x8086, 0x10bc, "82571eb", "82571EB (Copper)", 0 ),
        PCI_ROM ( 0x8086, 0x10bd, "82566dm-2", "82566DM-2", 0 ),
        PCI_ROM ( 0x8086, 0x10bf, "82567lf", "82567LF", 0 ),
        PCI_ROM ( 0x8086, 0x10c0, "82562v-2", "82562V-2", 0 ),
        PCI_ROM ( 0x8086, 0x10c2, "82562g-2", "82562G-2", 0 ),
        PCI_ROM ( 0x8086, 0x10c3, "82562gt-2", "82562GT-2", 0 ),
        PCI_ROM ( 0x8086, 0x10c4, "82562gt", "82562GT", INTEL_PBS_ERRATA ),
        PCI_ROM ( 0x8086, 0x10c5, "82562g", "82562G", INTEL_PBS_ERRATA ),
        PCI_ROM ( 0x8086, 0x10c9, "82576", "82576", 0 ),
        PCI_ROM ( 0x8086, 0x10cb, "82567v", "82567V", 0 ),
        PCI_ROM ( 0x8086, 0x10cc, "82567lm-2", "82567LM-2", 0 ),
        PCI_ROM ( 0x8086, 0x10cd, "82567lf-2", "82567LF-2", 0 ),
        PCI_ROM ( 0x8086, 0x10ce, "82567v-2", "82567V-2", 0 ),
        PCI_ROM ( 0x8086, 0x10d3, "82574l", "82574L", 0 ),
        PCI_ROM ( 0x8086, 0x10d5, "82571pt", "82571PT PT Quad", 0 ),
        PCI_ROM ( 0x8086, 0x10d6, "82575gb", "82575GB", 0 ),
        PCI_ROM ( 0x8086, 0x10d9, "82571eb-d", "82571EB Dual Mezzanine", 0 ),
        PCI_ROM ( 0x8086, 0x10da, "82571eb-q", "82571EB Quad Mezzanine", 0 ),
        PCI_ROM ( 0x8086, 0x10de, "82567lm-3", "82567LM-3", 0 ),
        PCI_ROM ( 0x8086, 0x10df, "82567lf-3", "82567LF-3", 0 ),
        PCI_ROM ( 0x8086, 0x10e5, "82567lm-4", "82567LM-4", 0 ),
        PCI_ROM ( 0x8086, 0x10e6, "82576", "82576", 0 ),
        PCI_ROM ( 0x8086, 0x10e7, "82576-2", "82576", 0 ),
        PCI_ROM ( 0x8086, 0x10e8, "82576-3", "82576", 0 ),
        PCI_ROM ( 0x8086, 0x10ea, "82577lm", "82577LM", 0 ),
        PCI_ROM ( 0x8086, 0x10eb, "82577lc", "82577LC", 0 ),
        PCI_ROM ( 0x8086, 0x10ef, "82578dm", "82578DM", 0 ),
        PCI_ROM ( 0x8086, 0x10f0, "82578dc", "82578DC", 0 ),
        PCI_ROM ( 0x8086, 0x10f5, "82567lm", "82567LM", 0 ),
        PCI_ROM ( 0x8086, 0x10f6, "82574l", "82574L", 0 ),
        PCI_ROM ( 0x8086, 0x1501, "82567v-3", "82567V-3", INTEL_PBS_ERRATA ),
        PCI_ROM ( 0x8086, 0x1502, "82579lm", "82579LM", INTEL_NO_PHY_RST ),
        PCI_ROM ( 0x8086, 0x1503, "82579v", "82579V", 0 ),
        PCI_ROM ( 0x8086, 0x150a, "82576ns", "82576NS", 0 ),
        PCI_ROM ( 0x8086, 0x150c, "82583v", "82583V", 0 ),
        PCI_ROM ( 0x8086, 0x150d, "82576-4", "82576 Backplane", 0 ),
        PCI_ROM ( 0x8086, 0x150e, "82580", "82580", 0 ),
        PCI_ROM ( 0x8086, 0x150f, "82580-f", "82580 Fiber", 0 ),
        PCI_ROM ( 0x8086, 0x1510, "82580-b", "82580 Backplane", 0 ),
        PCI_ROM ( 0x8086, 0x1511, "82580-s", "82580 SFP", 0 ),
        PCI_ROM ( 0x8086, 0x1516, "82580-2", "82580", 0 ),
        PCI_ROM ( 0x8086, 0x1518, "82576ns", "82576NS SerDes", 0 ),
        PCI_ROM ( 0x8086, 0x1521, "i350", "I350", 0 ),
        PCI_ROM ( 0x8086, 0x1522, "i350-f", "I350 Fiber", 0 ),
        PCI_ROM ( 0x8086, 0x1523, "i350-b", "I350 Backplane", INTEL_NO_ASDE ),
        PCI_ROM ( 0x8086, 0x1524, "i350-2", "I350", 0 ),
        PCI_ROM ( 0x8086, 0x1525, "82567v-4", "82567V-4", 0 ),
        PCI_ROM ( 0x8086, 0x1526, "82576-5", "82576", 0 ),
        PCI_ROM ( 0x8086, 0x1527, "82580-f2", "82580 Fiber", 0 ),
        PCI_ROM ( 0x8086, 0x1533, "i210", "I210", INTEL_PBSIZE_RST ),
        PCI_ROM ( 0x8086, 0x1539, "i211", "I211", 0 ),
        PCI_ROM ( 0x8086, 0x153a, "i217lm", "I217-LM", INTEL_NO_PHY_RST ),
        PCI_ROM ( 0x8086, 0x153b, "i217v", "I217-V", 0 ),
        PCI_ROM ( 0x8086, 0x1559, "i218v", "I218-V", INTEL_NO_PHY_RST ),
        PCI_ROM ( 0x8086, 0x155a, "i218lm", "I218-LM", INTEL_NO_PHY_RST ),
        PCI_ROM ( 0x8086, 0x156f, "i219lm", "I219-LM", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x1570, "i219v", "I219-V", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x157b, "i210-2", "I210", INTEL_PBSIZE_RST ),
        PCI_ROM ( 0x8086, 0x15a0, "i218lm-2", "I218-LM", INTEL_NO_PHY_RST ),
        PCI_ROM ( 0x8086, 0x15a1, "i218v-2", "I218-V", 0 ),
        PCI_ROM ( 0x8086, 0x15a2, "i218lm-3", "I218-LM", INTEL_NO_PHY_RST ),
        PCI_ROM ( 0x8086, 0x15a3, "i218v-3", "I218-V", INTEL_NO_PHY_RST ),
        PCI_ROM ( 0x8086, 0x15b7, "i219lm-2", "I219-LM (2)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15b8, "i219v-2", "I219-V (2)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15b9, "i219lm-3", "I219-LM (3)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15bb, "i219lm-7", "I219-LM (7)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15bc, "i219v-7", "I219-V (7)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15bd, "i219lm-6", "I219-LM (6)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15be, "i219v-6", "I219-V (6)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15d6, "i219v-5", "I219-V (5)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15d7, "i219lm-4", "I219-LM (4)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15d8, "i219v-4", "I219-V (4)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15df, "i219lm-8", "I219-LM (8)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15e0, "i219v-8", "I219-V (8)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15e1, "i219lm-9", "I219-LM (9)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15e2, "i219v-9", "I219-V (9)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15e3, "i219lm-5", "I219-LM (5)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15f4, "i219lm-15", "I219-LM (15)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15f5, "i219v-15", "I219-V (15)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15f9, "i219lm-14", "I219-LM (14)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15fa, "i219v-14", "I219-V (14)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15fb, "i219lm-13", "I219-LM (13)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x15fc, "i219v-13", "I219-V (13)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x1a1c, "i219lm-17", "I219-LM (17)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x1a1d, "i219v-17", "I219-V (17)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x1a1e, "i219lm-16", "I219-LM (16)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x1a1f, "i219v-16", "I219-V (16)", INTEL_I219 ),
        PCI_ROM ( 0x8086, 0x1f41, "i354", "I354", INTEL_NO_ASDE ),
        PCI_ROM ( 0x8086, 0x294c, "82566dc-2", "82566DC-2", 0 ),
        PCI_ROM ( 0x8086, 0x2e6e, "cemedia", "CE Media Processor", 0 ),
};

/** Intel PCI driver */
struct pci_driver intel_driver __pci_driver = {
        .ids = intel_nics,
        .id_count = ( sizeof ( intel_nics ) / sizeof ( intel_nics[0] ) ),
        .probe = intel_probe,
        .remove = intel_remove,
};