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- /*
- * gPXE driver for Intel eepro1000 ethernet cards
- *
- * Written by Marty Connor
- *
- * Copyright Entity Cyber, Inc. 2007
- *
- * This software may be used and distributed according to the terms of
- * the GNU General Public License (GPL), incorporated herein by
- * reference. Drivers based on or derived from this code fall under
- * the GPL and must retain the authorship, copyright and license
- * notice.
- *
- */
-
- /*******************************************************************************
-
- Intel PRO/1000 Linux driver
- Copyright(c) 1999 - 2006 Intel Corporation.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms and conditions of the GNU General Public License,
- version 2, as published by the Free Software Foundation.
-
- This program is distributed in the hope 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
-
- The full GNU General Public License is included in this distribution in
- the file called "COPYING".
-
- Contact Information:
- Linux NICS <linux.nics@intel.com>
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
- *******************************************************************************/
-
- FILE_LICENCE ( GPL2_ONLY );
-
- #include "e1000.h"
-
- /**
- * e1000_get_hw_control - get control of the h/w from f/w
- *
- * @v adapter e1000 private structure
- *
- * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit.
- * For ASF and Pass Through versions of f/w this means that
- * the driver is loaded. For AMT version (only with 82573)
- * of the f/w this means that the network i/f is open.
- *
- **/
- static void
- e1000_get_hw_control ( struct e1000_adapter *adapter )
- {
- uint32_t ctrl_ext;
- uint32_t swsm;
-
- DBG ( "e1000_get_hw_control\n" );
-
- /* Let firmware know the driver has taken over */
- switch (adapter->hw.mac_type) {
- case e1000_82573:
- swsm = E1000_READ_REG(&adapter->hw, SWSM);
- E1000_WRITE_REG(&adapter->hw, SWSM,
- swsm | E1000_SWSM_DRV_LOAD);
- break;
- case e1000_82571:
- case e1000_82572:
- case e1000_80003es2lan:
- case e1000_ich8lan:
- ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
- E1000_WRITE_REG(&adapter->hw, CTRL_EXT,
- ctrl_ext | E1000_CTRL_EXT_DRV_LOAD);
- break;
- default:
- break;
- }
- }
-
- /**
- * e1000_irq_enable - Enable default interrupt generation settings
- *
- * @v adapter e1000 private structure
- **/
- static void
- e1000_irq_enable ( struct e1000_adapter *adapter )
- {
- E1000_WRITE_REG ( &adapter->hw, IMS, E1000_IMS_RXDMT0 |
- E1000_IMS_RXSEQ );
- E1000_WRITE_FLUSH ( &adapter->hw );
- }
-
- /**
- * e1000_irq_disable - Mask off interrupt generation on the NIC
- *
- * @v adapter e1000 private structure
- **/
- static void
- e1000_irq_disable ( struct e1000_adapter *adapter )
- {
- E1000_WRITE_REG ( &adapter->hw, IMC, ~0 );
- E1000_WRITE_FLUSH ( &adapter->hw );
- }
-
- /**
- * e1000_irq_force - trigger interrupt
- *
- * @v adapter e1000 private structure
- **/
- static void
- e1000_irq_force ( struct e1000_adapter *adapter )
- {
- E1000_WRITE_REG ( &adapter->hw, ICS, E1000_ICS_RXDMT0 );
- E1000_WRITE_FLUSH ( &adapter->hw );
- }
-
- /**
- * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
- *
- * @v adapter e1000 private structure
- *
- * e1000_sw_init initializes the Adapter private data structure.
- * Fields are initialized based on PCI device information and
- * OS network device settings (MTU size).
- **/
- static int
- e1000_sw_init ( struct e1000_adapter *adapter )
- {
- struct e1000_hw *hw = &adapter->hw;
- struct pci_device *pdev = adapter->pdev;
-
- /* PCI config space info */
-
- hw->vendor_id = pdev->vendor;
- hw->device_id = pdev->device;
-
- pci_read_config_word ( pdev, PCI_COMMAND, &hw->pci_cmd_word );
-
- /* Disable Flow Control */
- hw->fc = E1000_FC_NONE;
-
- adapter->eeprom_wol = 0;
- adapter->wol = adapter->eeprom_wol;
- adapter->en_mng_pt = 0;
- adapter->rx_int_delay = 0;
- adapter->rx_abs_int_delay = 0;
-
- adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
- adapter->rx_ps_bsize0 = E1000_RXBUFFER_128;
- hw->max_frame_size = MAXIMUM_ETHERNET_VLAN_SIZE +
- ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
- hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
-
- /* identify the MAC */
-
- if ( e1000_set_mac_type ( hw ) ) {
- DBG ( "Unknown MAC Type\n" );
- return -EIO;
- }
-
- switch ( hw->mac_type ) {
- default:
- break;
- case e1000_82541:
- case e1000_82547:
- case e1000_82541_rev_2:
- case e1000_82547_rev_2:
- hw->phy_init_script = 1;
- break;
- }
-
- e1000_set_media_type ( hw );
-
- hw->autoneg = TRUE;
- hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
- hw->wait_autoneg_complete = TRUE;
-
- hw->tbi_compatibility_en = TRUE;
- hw->adaptive_ifs = TRUE;
-
- /* Copper options */
-
- if ( hw->media_type == e1000_media_type_copper ) {
- hw->mdix = AUTO_ALL_MODES;
- hw->disable_polarity_correction = FALSE;
- hw->master_slave = E1000_MASTER_SLAVE;
- }
-
- e1000_irq_disable ( adapter );
-
- return 0;
- }
-
- /**
- * e1000_setup_tx_resources - allocate Tx resources (Descriptors)
- *
- * @v adapter e1000 private structure
- *
- * @ret rc Returns 0 on success, negative on failure
- **/
- static int
- e1000_setup_tx_resources ( struct e1000_adapter *adapter )
- {
- DBG ( "e1000_setup_tx_resources\n" );
-
- /* Allocate transmit descriptor ring memory.
- It must not cross a 64K boundary because of hardware errata #23
- so we use malloc_dma() requesting a 128 byte block that is
- 128 byte aligned. This should guarantee that the memory
- allocated will not cross a 64K boundary, because 128 is an
- even multiple of 65536 ( 65536 / 128 == 512 ), so all possible
- allocations of 128 bytes on a 128 byte boundary will not
- cross 64K bytes.
- */
-
- adapter->tx_base =
- malloc_dma ( adapter->tx_ring_size, adapter->tx_ring_size );
-
- if ( ! adapter->tx_base ) {
- return -ENOMEM;
- }
-
- memset ( adapter->tx_base, 0, adapter->tx_ring_size );
-
- DBG ( "adapter->tx_base = %#08lx\n", virt_to_bus ( adapter->tx_base ) );
-
- return 0;
- }
-
- static void
- e1000_free_tx_resources ( struct e1000_adapter *adapter )
- {
- DBG ( "e1000_free_tx_resources\n" );
-
- free_dma ( adapter->tx_base, adapter->tx_ring_size );
- }
-
- /**
- * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Tx unit of the MAC after a reset.
- **/
- static void
- e1000_configure_tx ( struct e1000_adapter *adapter )
- {
- struct e1000_hw *hw = &adapter->hw;
- uint32_t tctl;
-
- DBG ( "e1000_configure_tx\n" );
-
- E1000_WRITE_REG ( hw, TDBAH, 0 );
- E1000_WRITE_REG ( hw, TDBAL, virt_to_bus ( adapter->tx_base ) );
- E1000_WRITE_REG ( hw, TDLEN, adapter->tx_ring_size );
-
- DBG ( "TDBAL: %#08x\n", E1000_READ_REG ( hw, TDBAL ) );
- DBG ( "TDLEN: %d\n", E1000_READ_REG ( hw, TDLEN ) );
-
- /* Setup the HW Tx Head and Tail descriptor pointers */
- E1000_WRITE_REG ( hw, TDH, 0 );
- E1000_WRITE_REG ( hw, TDT, 0 );
-
- adapter->tx_head = 0;
- adapter->tx_tail = 0;
- adapter->tx_fill_ctr = 0;
-
- /* Setup Transmit Descriptor Settings for eop descriptor */
- tctl = E1000_TCTL_PSP | E1000_TCTL_EN |
- (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT) |
- (E1000_HDX_COLLISION_DISTANCE << E1000_COLD_SHIFT);
-
- e1000_config_collision_dist ( hw );
-
- E1000_WRITE_REG ( hw, TCTL, tctl );
- E1000_WRITE_FLUSH ( hw );
- }
-
- /**
- * e1000_setup_rx_resources - allocate Rx resources (Descriptors)
- *
- * @v adapter e1000 private structure
- *
- * @ret rc Returns 0 on success, negative on failure
- **/
- static int
- e1000_setup_rx_resources ( struct e1000_adapter *adapter )
- {
- int i, j;
- struct e1000_rx_desc *rx_curr_desc;
-
- DBG ( "e1000_setup_rx_resources\n" );
-
- /* Allocate receive descriptor ring memory.
- It must not cross a 64K boundary because of hardware errata
- */
-
- adapter->rx_base =
- malloc_dma ( adapter->rx_ring_size, adapter->rx_ring_size );
-
- if ( ! adapter->rx_base ) {
- return -ENOMEM;
- }
- memset ( adapter->rx_base, 0, adapter->rx_ring_size );
-
- for ( i = 0; i < NUM_RX_DESC; i++ ) {
-
- adapter->rx_iobuf[i] = alloc_iob ( MAXIMUM_ETHERNET_VLAN_SIZE );
-
- /* If unable to allocate all iobufs, free any that
- * were successfully allocated, and return an error
- */
- if ( ! adapter->rx_iobuf[i] ) {
- for ( j = 0; j < i; j++ ) {
- free_iob ( adapter->rx_iobuf[j] );
- }
- return -ENOMEM;
- }
-
- rx_curr_desc = ( void * ) ( adapter->rx_base ) +
- ( i * sizeof ( *adapter->rx_base ) );
-
- rx_curr_desc->buffer_addr = virt_to_bus ( adapter->rx_iobuf[i]->data );
-
- DBG ( "i = %d rx_curr_desc->buffer_addr = %#16llx\n",
- i, rx_curr_desc->buffer_addr );
-
- }
- return 0;
- }
-
- static void
- e1000_free_rx_resources ( struct e1000_adapter *adapter )
- {
- int i;
-
- DBG ( "e1000_free_rx_resources\n" );
-
- free_dma ( adapter->rx_base, adapter->rx_ring_size );
-
- for ( i = 0; i < NUM_RX_DESC; i++ ) {
- free_iob ( adapter->rx_iobuf[i] );
- }
- }
-
- /**
- * e1000_configure_rx - Configure 8254x Receive Unit after Reset
- * @adapter: board private structure
- *
- * Configure the Rx unit of the MAC after a reset.
- **/
- static void
- e1000_configure_rx ( struct e1000_adapter *adapter )
- {
- struct e1000_hw *hw = &adapter->hw;
- uint32_t rctl;
-
- DBG ( "e1000_configure_rx\n" );
-
- /* disable receives while setting up the descriptors */
- rctl = E1000_READ_REG ( hw, RCTL );
- E1000_WRITE_REG ( hw, RCTL, rctl & ~E1000_RCTL_EN );
-
- adapter->rx_curr = 0;
-
- /* Setup the HW Rx Head and Tail Descriptor Pointers and
- * the Base and Length of the Rx Descriptor Ring */
-
- E1000_WRITE_REG ( hw, RDBAL, virt_to_bus ( adapter->rx_base ) );
- E1000_WRITE_REG ( hw, RDBAH, 0 );
- E1000_WRITE_REG ( hw, RDLEN, adapter->rx_ring_size );
-
- E1000_WRITE_REG ( hw, RDH, 0 );
- E1000_WRITE_REG ( hw, RDT, NUM_RX_DESC - 1 );
-
- /* Enable Receives */
- rctl = ( E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_SZ_2048 |
- E1000_RCTL_MPE
- );
-
- E1000_WRITE_REG ( hw, RCTL, rctl );
- E1000_WRITE_FLUSH ( hw );
-
- DBG ( "RDBAL: %#08x\n", E1000_READ_REG ( hw, RDBAL ) );
- DBG ( "RDLEN: %d\n", E1000_READ_REG ( hw, RDLEN ) );
- DBG ( "RCTL: %#08x\n", E1000_READ_REG ( hw, RCTL ) );
- }
-
- /**
- * e1000_reset - Put e1000 NIC in known initial state
- *
- * @v adapter e1000 private structure
- **/
- static void
- e1000_reset ( struct e1000_adapter *adapter )
- {
- uint32_t pba = 0;
- uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF;
-
- DBG ( "e1000_reset\n" );
-
- switch (adapter->hw.mac_type) {
- case e1000_82542_rev2_0:
- case e1000_82542_rev2_1:
- case e1000_82543:
- case e1000_82544:
- case e1000_82540:
- case e1000_82541:
- case e1000_82541_rev_2:
- pba = E1000_PBA_48K;
- break;
- case e1000_82545:
- case e1000_82545_rev_3:
- case e1000_82546:
- case e1000_82546_rev_3:
- pba = E1000_PBA_48K;
- break;
- case e1000_82547:
- case e1000_82547_rev_2:
- pba = E1000_PBA_30K;
- break;
- case e1000_82571:
- case e1000_82572:
- case e1000_80003es2lan:
- pba = E1000_PBA_38K;
- break;
- case e1000_82573:
- pba = E1000_PBA_20K;
- break;
- case e1000_ich8lan:
- pba = E1000_PBA_8K;
- case e1000_undefined:
- case e1000_num_macs:
- break;
- }
-
- E1000_WRITE_REG ( &adapter->hw, PBA, pba );
-
- /* flow control settings */
- /* Set the FC high water mark to 90% of the FIFO size.
- * Required to clear last 3 LSB */
- fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8;
- /* We can't use 90% on small FIFOs because the remainder
- * would be less than 1 full frame. In this case, we size
- * it to allow at least a full frame above the high water
- * mark. */
- if (pba < E1000_PBA_16K)
- fc_high_water_mark = (pba * 1024) - 1600;
-
- adapter->hw.fc_high_water = fc_high_water_mark;
- adapter->hw.fc_low_water = fc_high_water_mark - 8;
- if (adapter->hw.mac_type == e1000_80003es2lan)
- adapter->hw.fc_pause_time = 0xFFFF;
- else
- adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME;
- adapter->hw.fc_send_xon = 1;
- adapter->hw.fc = adapter->hw.original_fc;
- /* Allow time for pending master requests to run */
-
- e1000_reset_hw ( &adapter->hw );
-
- if ( adapter->hw.mac_type >= e1000_82544 )
- E1000_WRITE_REG ( &adapter->hw, WUC, 0 );
-
- if ( e1000_init_hw ( &adapter->hw ) )
- DBG ( "Hardware Error\n" );
-
- /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */
- if (adapter->hw.mac_type >= e1000_82544 &&
- adapter->hw.mac_type <= e1000_82547_rev_2 &&
- adapter->hw.autoneg == 1 &&
- adapter->hw.autoneg_advertised == ADVERTISE_1000_FULL) {
- uint32_t ctrl = E1000_READ_REG(&adapter->hw, CTRL);
- /* clear phy power management bit if we are in gig only mode,
- * which if enabled will attempt negotiation to 100Mb, which
- * can cause a loss of link at power off or driver unload */
- ctrl &= ~E1000_CTRL_SWDPIN3;
- E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
- }
-
- e1000_phy_get_info ( &adapter->hw, &adapter->phy_info );
-
- if (!adapter->smart_power_down &&
- (adapter->hw.mac_type == e1000_82571 ||
- adapter->hw.mac_type == e1000_82572)) {
- uint16_t phy_data = 0;
- /* speed up time to link by disabling smart power down, ignore
- * the return value of this function because there is nothing
- * different we would do if it failed */
- e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
- &phy_data);
- phy_data &= ~IGP02E1000_PM_SPD;
- e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
- phy_data);
- }
- }
-
- /** Functions that implement the gPXE driver API **/
-
- /**
- * e1000_close - Disables a network interface
- *
- * @v netdev network interface device structure
- *
- **/
- static void
- e1000_close ( struct net_device *netdev )
- {
- struct e1000_adapter *adapter = netdev_priv ( netdev );
- struct e1000_hw *hw = &adapter->hw;
- uint32_t rctl;
- uint32_t icr;
-
- DBG ( "e1000_close\n" );
-
- /* Acknowledge interrupts */
- icr = E1000_READ_REG ( hw, ICR );
-
- e1000_irq_disable ( adapter );
-
- /* disable receives */
- rctl = E1000_READ_REG ( hw, RCTL );
- E1000_WRITE_REG ( hw, RCTL, rctl & ~E1000_RCTL_EN );
- E1000_WRITE_FLUSH ( hw );
-
- e1000_reset_hw ( hw );
-
- e1000_free_tx_resources ( adapter );
- e1000_free_rx_resources ( adapter );
- }
-
- /**
- * e1000_transmit - Transmit a packet
- *
- * @v netdev Network device
- * @v iobuf I/O buffer
- *
- * @ret rc Returns 0 on success, negative on failure
- */
- static int
- e1000_transmit ( struct net_device *netdev, struct io_buffer *iobuf )
- {
- struct e1000_adapter *adapter = netdev_priv( netdev );
- struct e1000_hw *hw = &adapter->hw;
- uint32_t tx_curr = adapter->tx_tail;
- struct e1000_tx_desc *tx_curr_desc;
-
- DBG ("e1000_transmit\n");
-
- if ( adapter->tx_fill_ctr == NUM_TX_DESC ) {
- DBG ("TX overflow\n");
- return -ENOBUFS;
- }
-
- /* Save pointer to iobuf we have been given to transmit,
- netdev_tx_complete() will need it later
- */
- adapter->tx_iobuf[tx_curr] = iobuf;
-
- tx_curr_desc = ( void * ) ( adapter->tx_base ) +
- ( tx_curr * sizeof ( *adapter->tx_base ) );
-
- DBG ( "tx_curr_desc = %#08lx\n", virt_to_bus ( tx_curr_desc ) );
- DBG ( "tx_curr_desc + 16 = %#08lx\n", virt_to_bus ( tx_curr_desc ) + 16 );
- DBG ( "iobuf->data = %#08lx\n", virt_to_bus ( iobuf->data ) );
-
- /* Add the packet to TX ring
- */
- tx_curr_desc->buffer_addr =
- virt_to_bus ( iobuf->data );
- tx_curr_desc->lower.data =
- E1000_TXD_CMD_RPS | E1000_TXD_CMD_EOP |
- E1000_TXD_CMD_IFCS | iob_len ( iobuf );
- tx_curr_desc->upper.data = 0;
-
- DBG ( "TX fill: %d tx_curr: %d addr: %#08lx len: %zd\n", adapter->tx_fill_ctr,
- tx_curr, virt_to_bus ( iobuf->data ), iob_len ( iobuf ) );
-
- /* Point to next free descriptor */
- adapter->tx_tail = ( adapter->tx_tail + 1 ) % NUM_TX_DESC;
- adapter->tx_fill_ctr++;
-
- /* Write new tail to NIC, making packet available for transmit
- */
- wmb();
- E1000_WRITE_REG ( hw, TDT, adapter->tx_tail );
-
- return 0;
- }
-
- /**
- * e1000_poll - Poll for received packets
- *
- * @v netdev Network device
- */
- static void
- e1000_poll ( struct net_device *netdev )
- {
- struct e1000_adapter *adapter = netdev_priv( netdev );
- struct e1000_hw *hw = &adapter->hw;
-
- uint32_t icr;
- uint32_t tx_status;
- uint32_t rx_status;
- uint32_t rx_len;
- uint32_t rx_err;
- struct io_buffer *rx_iob;
- struct e1000_tx_desc *tx_curr_desc;
- struct e1000_rx_desc *rx_curr_desc;
- uint32_t i;
- uint64_t tmp_buffer_addr;
-
- DBGP ( "e1000_poll\n" );
-
- /* Acknowledge interrupts */
- icr = E1000_READ_REG ( hw, ICR );
- if ( ! icr )
- return;
-
- DBG ( "e1000_poll: intr_status = %#08x\n", icr );
-
- /* Check status of transmitted packets
- */
- while ( ( i = adapter->tx_head ) != adapter->tx_tail ) {
-
- tx_curr_desc = ( void * ) ( adapter->tx_base ) +
- ( i * sizeof ( *adapter->tx_base ) );
-
- tx_status = tx_curr_desc->upper.data;
-
- /* if the packet at tx_head is not owned by hardware it is for us */
- if ( ! ( tx_status & E1000_TXD_STAT_DD ) )
- break;
-
- DBG ( "Sent packet. tx_head: %d tx_tail: %d tx_status: %#08x\n",
- adapter->tx_head, adapter->tx_tail, tx_status );
-
- if ( tx_status & ( E1000_TXD_STAT_EC | E1000_TXD_STAT_LC |
- E1000_TXD_STAT_TU ) ) {
- netdev_tx_complete_err ( netdev, adapter->tx_iobuf[i], -EINVAL );
- DBG ( "Error transmitting packet, tx_status: %#08x\n",
- tx_status );
- } else {
- netdev_tx_complete ( netdev, adapter->tx_iobuf[i] );
- DBG ( "Success transmitting packet, tx_status: %#08x\n",
- tx_status );
- }
-
- /* Decrement count of used descriptors, clear this descriptor
- */
- adapter->tx_fill_ctr--;
- memset ( tx_curr_desc, 0, sizeof ( *tx_curr_desc ) );
-
- adapter->tx_head = ( adapter->tx_head + 1 ) % NUM_TX_DESC;
- }
-
- /* Process received packets
- */
- while ( 1 ) {
-
- i = adapter->rx_curr;
-
- rx_curr_desc = ( void * ) ( adapter->rx_base ) +
- ( i * sizeof ( *adapter->rx_base ) );
- rx_status = rx_curr_desc->status;
-
- DBG2 ( "Before DD Check RX_status: %#08x\n", rx_status );
-
- if ( ! ( rx_status & E1000_RXD_STAT_DD ) )
- break;
-
- DBG ( "RCTL = %#08x\n", E1000_READ_REG ( &adapter->hw, RCTL ) );
-
- rx_len = rx_curr_desc->length;
-
- DBG ( "Received packet, rx_curr: %d rx_status: %#08x rx_len: %d\n",
- i, rx_status, rx_len );
-
- rx_err = rx_curr_desc->errors;
-
- if ( rx_err & E1000_RXD_ERR_FRAME_ERR_MASK ) {
-
- netdev_rx_err ( netdev, NULL, -EINVAL );
- DBG ( "e1000_poll: Corrupted packet received!"
- " rx_err: %#08x\n", rx_err );
- } else {
-
- /* If unable allocate space for this packet,
- * try again next poll
- */
- rx_iob = alloc_iob ( rx_len );
- if ( ! rx_iob )
- break;
-
- memcpy ( iob_put ( rx_iob, rx_len ),
- adapter->rx_iobuf[i]->data, rx_len );
-
- /* Add this packet to the receive queue.
- */
- netdev_rx ( netdev, rx_iob );
- }
-
- tmp_buffer_addr = rx_curr_desc->buffer_addr;
- memset ( rx_curr_desc, 0, sizeof ( *rx_curr_desc ) );
- rx_curr_desc->buffer_addr = tmp_buffer_addr;
-
- E1000_WRITE_REG ( hw, RDT, adapter->rx_curr );
-
- adapter->rx_curr = ( adapter->rx_curr + 1 ) % NUM_RX_DESC;
- }
- }
-
- /**
- * e1000_irq - enable or Disable interrupts
- *
- * @v adapter e1000 adapter
- * @v action requested interrupt action
- **/
- static void
- e1000_irq ( struct net_device *netdev, int enable )
- {
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- DBG ( "e1000_irq\n" );
-
- switch ( enable ) {
- case 0 :
- e1000_irq_disable ( adapter );
- break;
- case 1 :
- e1000_irq_enable ( adapter );
- break;
- case 2 :
- e1000_irq_force ( adapter );
- break;
- }
- }
-
- static struct net_device_operations e1000_operations;
-
- /**
- * e1000_probe - Initial configuration of e1000 NIC
- *
- * @v pci PCI device
- * @v id PCI IDs
- *
- * @ret rc Return status code
- **/
- static int
- e1000_probe ( struct pci_device *pdev,
- const struct pci_device_id *id __unused )
- {
- int i, err;
- struct net_device *netdev;
- struct e1000_adapter *adapter;
- unsigned long mmio_start, mmio_len;
- unsigned long flash_start, flash_len;
-
- DBG ( "e1000_probe\n" );
-
- err = -ENOMEM;
-
- /* Allocate net device ( also allocates memory for netdev->priv
- and makes netdev-priv point to it ) */
- netdev = alloc_etherdev ( sizeof ( struct e1000_adapter ) );
- if ( ! netdev )
- goto err_alloc_etherdev;
-
- /* Associate e1000-specific network operations operations with
- * generic network device layer */
- netdev_init ( netdev, &e1000_operations );
-
- /* Associate this network device with given PCI device */
- pci_set_drvdata ( pdev, netdev );
- netdev->dev = &pdev->dev;
-
- /* Initialize driver private storage */
- adapter = netdev_priv ( netdev );
- memset ( adapter, 0, ( sizeof ( *adapter ) ) );
-
- adapter->hw.io_base = pdev->ioaddr;
- adapter->ioaddr = pdev->ioaddr;
- adapter->irqno = pdev->irq;
- adapter->netdev = netdev;
- adapter->pdev = pdev;
- adapter->hw.back = adapter;
-
- adapter->tx_ring_size = sizeof ( *adapter->tx_base ) * NUM_TX_DESC;
- adapter->rx_ring_size = sizeof ( *adapter->rx_base ) * NUM_RX_DESC;
-
- mmio_start = pci_bar_start ( pdev, PCI_BASE_ADDRESS_0 );
- mmio_len = pci_bar_size ( pdev, PCI_BASE_ADDRESS_0 );
-
- DBG ( "mmio_start: %#08lx\n", mmio_start );
- DBG ( "mmio_len: %#08lx\n", mmio_len );
-
- /* Fix up PCI device */
- adjust_pci_device ( pdev );
-
- err = -EIO;
-
- adapter->hw.hw_addr = ioremap ( mmio_start, mmio_len );
- DBG ( "adapter->hw.hw_addr: %p\n", adapter->hw.hw_addr );
-
- if ( ! adapter->hw.hw_addr )
- goto err_ioremap;
-
- /* setup the private structure */
- if ( ( err = e1000_sw_init ( adapter ) ) )
- goto err_sw_init;
-
- DBG ( "adapter->hw.mac_type: %#08x\n", adapter->hw.mac_type );
-
- /* Flash BAR mapping must happen after e1000_sw_init
- * because it depends on mac_type
- */
- if ( ( adapter->hw.mac_type == e1000_ich8lan ) && ( pdev->ioaddr ) ) {
- flash_start = pci_bar_start ( pdev, PCI_BASE_ADDRESS_1 );
- flash_len = pci_bar_size ( pdev, PCI_BASE_ADDRESS_1 );
- adapter->hw.flash_address = ioremap ( flash_start, flash_len );
- if ( ! adapter->hw.flash_address )
- goto err_flashmap;
- }
-
- /* initialize eeprom parameters */
- if ( e1000_init_eeprom_params ( &adapter->hw ) ) {
- DBG ( "EEPROM initialization failed\n" );
- goto err_eeprom;
- }
-
- /* before reading the EEPROM, reset the controller to
- * put the device in a known good starting state
- */
- err = e1000_reset_hw ( &adapter->hw );
- if ( err < 0 ) {
- DBG ( "Hardware Initialization Failed\n" );
- goto err_reset;
- }
-
- /* make sure the EEPROM is good */
- if ( e1000_validate_eeprom_checksum( &adapter->hw ) < 0 ) {
- DBG ( "The EEPROM Checksum Is Not Valid\n" );
- goto err_eeprom;
- }
-
- /* copy the MAC address out of the EEPROM */
- if ( e1000_read_mac_addr ( &adapter->hw ) )
- DBG ( "EEPROM Read Error\n" );
-
- memcpy ( netdev->hw_addr, adapter->hw.mac_addr, ETH_ALEN );
-
- /* print bus type/speed/width info */
- {
- struct e1000_hw *hw = &adapter->hw;
- DBG ( "(PCI%s:%s:%s) ",
- ((hw->bus_type == e1000_bus_type_pcix) ? "-X" :
- (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")),
- ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" :
- (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" :
- (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" :
- (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" :
- (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"),
- ((hw->bus_width == e1000_bus_width_64) ? "64-bit" :
- (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" :
- (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" :
- "32-bit"));
- }
- for (i = 0; i < 6; i++)
- DBG ("%02x%s", netdev->ll_addr[i], i == 5 ? "\n" : ":");
-
- /* reset the hardware with the new settings */
- e1000_reset ( adapter );
-
- e1000_get_hw_control ( adapter );
-
- /* Mark as link up; we don't yet handle link state */
- netdev_link_up ( netdev );
-
- if ( ( err = register_netdev ( netdev ) ) != 0)
- goto err_register;
-
- DBG ( "e1000_probe succeeded!\n" );
-
- /* No errors, return success */
- return 0;
-
- /* Error return paths */
- err_reset:
- err_register:
- err_eeprom:
- if ( ! e1000_check_phy_reset_block ( &adapter->hw ) )
- e1000_phy_hw_reset ( &adapter->hw );
- if ( adapter->hw.flash_address )
- iounmap ( adapter->hw.flash_address );
- err_flashmap:
- err_sw_init:
- iounmap ( adapter->hw.hw_addr );
- err_ioremap:
- netdev_put ( netdev );
- err_alloc_etherdev:
- return err;
- }
-
- /**
- * e1000_remove - Device Removal Routine
- *
- * @v pdev PCI device information struct
- *
- **/
- static void
- e1000_remove ( struct pci_device *pdev )
- {
- struct net_device *netdev = pci_get_drvdata ( pdev );
- struct e1000_adapter *adapter = netdev_priv ( netdev );
-
- DBG ( "e1000_remove\n" );
-
- if ( adapter->hw.flash_address )
- iounmap ( adapter->hw.flash_address );
- if ( adapter->hw.hw_addr )
- iounmap ( adapter->hw.hw_addr );
-
- unregister_netdev ( netdev );
- e1000_reset_hw ( &adapter->hw );
- netdev_nullify ( netdev );
- netdev_put ( netdev );
- }
-
- /**
- * e1000_open - Called when a network interface is made active
- *
- * @v netdev network interface device structure
- * @ret rc Return status code, 0 on success, negative value on failure
- *
- **/
- static int
- e1000_open ( struct net_device *netdev )
- {
- struct e1000_adapter *adapter = netdev_priv(netdev);
- int err;
-
- DBG ( "e1000_open\n" );
-
- /* allocate transmit descriptors */
- err = e1000_setup_tx_resources ( adapter );
- if ( err ) {
- DBG ( "Error setting up TX resources!\n" );
- goto err_setup_tx;
- }
-
- /* allocate receive descriptors */
- err = e1000_setup_rx_resources ( adapter );
- if ( err ) {
- DBG ( "Error setting up RX resources!\n" );
- goto err_setup_rx;
- }
-
- e1000_configure_tx ( adapter );
-
- e1000_configure_rx ( adapter );
-
- DBG ( "RXDCTL: %#08x\n", E1000_READ_REG ( &adapter->hw, RXDCTL ) );
-
- return 0;
-
- err_setup_rx:
- e1000_free_tx_resources ( adapter );
- err_setup_tx:
- e1000_reset ( adapter );
-
- return err;
- }
-
- /** e1000 net device operations */
- static struct net_device_operations e1000_operations = {
- .open = e1000_open,
- .close = e1000_close,
- .transmit = e1000_transmit,
- .poll = e1000_poll,
- .irq = e1000_irq,
- };
-
- int32_t
- e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value)
- {
- struct e1000_adapter *adapter = hw->back;
- uint16_t cap_offset;
-
- #define PCI_CAP_ID_EXP 0x10 /* PCI Express */
- cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP);
- if (!cap_offset)
- return -E1000_ERR_CONFIG;
-
- pci_read_config_word(adapter->pdev, cap_offset + reg, value);
-
- return 0;
- }
-
- void
- e1000_pci_clear_mwi ( struct e1000_hw *hw )
- {
- struct e1000_adapter *adapter = hw->back;
-
- pci_write_config_word ( adapter->pdev, PCI_COMMAND,
- hw->pci_cmd_word & ~PCI_COMMAND_INVALIDATE );
- }
-
- void
- e1000_pci_set_mwi ( struct e1000_hw *hw )
- {
- struct e1000_adapter *adapter = hw->back;
-
- pci_write_config_word ( adapter->pdev, PCI_COMMAND, hw->pci_cmd_word );
- }
-
- void
- e1000_read_pci_cfg ( struct e1000_hw *hw, uint32_t reg, uint16_t *value )
- {
- struct e1000_adapter *adapter = hw->back;
-
- pci_read_config_word ( adapter->pdev, reg, value );
- }
-
- void
- e1000_write_pci_cfg ( struct e1000_hw *hw, uint32_t reg, uint16_t *value )
- {
- struct e1000_adapter *adapter = hw->back;
-
- pci_write_config_word ( adapter->pdev, reg, *value );
- }
-
- void
- e1000_io_write ( struct e1000_hw *hw __unused, unsigned long port, uint32_t value )
- {
- outl ( value, port );
- }
-
- static struct pci_device_id e1000_nics[] = {
- PCI_ROM(0x8086, 0x1000, "e1000-0x1000", "e1000-0x1000", 0),
- PCI_ROM(0x8086, 0x1001, "e1000-0x1001", "e1000-0x1001", 0),
- PCI_ROM(0x8086, 0x1004, "e1000-0x1004", "e1000-0x1004", 0),
- PCI_ROM(0x8086, 0x1008, "e1000-0x1008", "e1000-0x1008", 0),
- PCI_ROM(0x8086, 0x1009, "e1000-0x1009", "e1000-0x1009", 0),
- PCI_ROM(0x8086, 0x100c, "e1000-0x100c", "e1000-0x100c", 0),
- PCI_ROM(0x8086, 0x100d, "e1000-0x100d", "e1000-0x100d", 0),
- PCI_ROM(0x8086, 0x100e, "e1000-0x100e", "e1000-0x100e", 0),
- PCI_ROM(0x8086, 0x100f, "e1000-0x100f", "e1000-0x100f", 0),
- PCI_ROM(0x8086, 0x1010, "e1000-0x1010", "e1000-0x1010", 0),
- PCI_ROM(0x8086, 0x1011, "e1000-0x1011", "e1000-0x1011", 0),
- PCI_ROM(0x8086, 0x1012, "e1000-0x1012", "e1000-0x1012", 0),
- PCI_ROM(0x8086, 0x1013, "e1000-0x1013", "e1000-0x1013", 0),
- PCI_ROM(0x8086, 0x1014, "e1000-0x1014", "e1000-0x1014", 0),
- PCI_ROM(0x8086, 0x1015, "e1000-0x1015", "e1000-0x1015", 0),
- PCI_ROM(0x8086, 0x1016, "e1000-0x1016", "e1000-0x1016", 0),
- PCI_ROM(0x8086, 0x1017, "e1000-0x1017", "e1000-0x1017", 0),
- PCI_ROM(0x8086, 0x1018, "e1000-0x1018", "e1000-0x1018", 0),
- PCI_ROM(0x8086, 0x1019, "e1000-0x1019", "e1000-0x1019", 0),
- PCI_ROM(0x8086, 0x101a, "e1000-0x101a", "e1000-0x101a", 0),
- PCI_ROM(0x8086, 0x101d, "e1000-0x101d", "e1000-0x101d", 0),
- PCI_ROM(0x8086, 0x101e, "e1000-0x101e", "e1000-0x101e", 0),
- PCI_ROM(0x8086, 0x1026, "e1000-0x1026", "e1000-0x1026", 0),
- PCI_ROM(0x8086, 0x1027, "e1000-0x1027", "e1000-0x1027", 0),
- PCI_ROM(0x8086, 0x1028, "e1000-0x1028", "e1000-0x1028", 0),
- PCI_ROM(0x8086, 0x1049, "e1000-0x1049", "e1000-0x1049", 0),
- PCI_ROM(0x8086, 0x104a, "e1000-0x104a", "e1000-0x104a", 0),
- PCI_ROM(0x8086, 0x104b, "e1000-0x104b", "e1000-0x104b", 0),
- PCI_ROM(0x8086, 0x104c, "e1000-0x104c", "e1000-0x104c", 0),
- PCI_ROM(0x8086, 0x104d, "e1000-0x104d", "e1000-0x104d", 0),
- PCI_ROM(0x8086, 0x105e, "e1000-0x105e", "e1000-0x105e", 0),
- PCI_ROM(0x8086, 0x105f, "e1000-0x105f", "e1000-0x105f", 0),
- PCI_ROM(0x8086, 0x1060, "e1000-0x1060", "e1000-0x1060", 0),
- PCI_ROM(0x8086, 0x1075, "e1000-0x1075", "e1000-0x1075", 0),
- PCI_ROM(0x8086, 0x1076, "e1000-0x1076", "e1000-0x1076", 0),
- PCI_ROM(0x8086, 0x1077, "e1000-0x1077", "e1000-0x1077", 0),
- PCI_ROM(0x8086, 0x1078, "e1000-0x1078", "e1000-0x1078", 0),
- PCI_ROM(0x8086, 0x1079, "e1000-0x1079", "e1000-0x1079", 0),
- PCI_ROM(0x8086, 0x107a, "e1000-0x107a", "e1000-0x107a", 0),
- PCI_ROM(0x8086, 0x107b, "e1000-0x107b", "e1000-0x107b", 0),
- PCI_ROM(0x8086, 0x107c, "e1000-0x107c", "e1000-0x107c", 0),
- PCI_ROM(0x8086, 0x107d, "e1000-0x107d", "e1000-0x107d", 0),
- PCI_ROM(0x8086, 0x107e, "e1000-0x107e", "e1000-0x107e", 0),
- PCI_ROM(0x8086, 0x107f, "e1000-0x107f", "e1000-0x107f", 0),
- PCI_ROM(0x8086, 0x108a, "e1000-0x108a", "e1000-0x108a", 0),
- PCI_ROM(0x8086, 0x108b, "e1000-0x108b", "e1000-0x108b", 0),
- PCI_ROM(0x8086, 0x108c, "e1000-0x108c", "e1000-0x108c", 0),
- PCI_ROM(0x8086, 0x1096, "e1000-0x1096", "e1000-0x1096", 0),
- PCI_ROM(0x8086, 0x1098, "e1000-0x1098", "e1000-0x1098", 0),
- PCI_ROM(0x8086, 0x1099, "e1000-0x1099", "e1000-0x1099", 0),
- PCI_ROM(0x8086, 0x109a, "e1000-0x109a", "e1000-0x109a", 0),
- PCI_ROM(0x8086, 0x10a4, "e1000-0x10a4", "e1000-0x10a4", 0),
- PCI_ROM(0x8086, 0x10a5, "e1000-0x10a5", "e1000-0x10a5", 0),
- PCI_ROM(0x8086, 0x10b5, "e1000-0x10b5", "e1000-0x10b5", 0),
- PCI_ROM(0x8086, 0x10b9, "e1000-0x10b9", "e1000-0x10b9", 0),
- PCI_ROM(0x8086, 0x10ba, "e1000-0x10ba", "e1000-0x10ba", 0),
- PCI_ROM(0x8086, 0x10bb, "e1000-0x10bb", "e1000-0x10bb", 0),
- PCI_ROM(0x8086, 0x10bc, "e1000-0x10bc", "e1000-0x10bc", 0),
- PCI_ROM(0x8086, 0x10c4, "e1000-0x10c4", "e1000-0x10c4", 0),
- PCI_ROM(0x8086, 0x10c5, "e1000-0x10c5", "e1000-0x10c5", 0),
- PCI_ROM(0x8086, 0x10d9, "e1000-0x10d9", "e1000-0x10d9", 0),
- PCI_ROM(0x8086, 0x10da, "e1000-0x10da", "e1000-0x10da", 0),
- };
-
- struct pci_driver e1000_driver __pci_driver = {
- .ids = e1000_nics,
- .id_count = (sizeof (e1000_nics) / sizeof (e1000_nics[0])),
- .probe = e1000_probe,
- .remove = e1000_remove,
- };
-
- /*
- * Local variables:
- * c-basic-offset: 8
- * c-indent-level: 8
- * tab-width: 8
- * End:
- */
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