diff options
Diffstat (limited to 'gpxe/src/drivers/net/e1000/e1000.c')
| -rw-r--r-- | gpxe/src/drivers/net/e1000/e1000.c | 1189 |
1 files changed, 0 insertions, 1189 deletions
diff --git a/gpxe/src/drivers/net/e1000/e1000.c b/gpxe/src/drivers/net/e1000/e1000.c deleted file mode 100644 index 8e8c697f..00000000 --- a/gpxe/src/drivers/net/e1000/e1000.c +++ /dev/null @@ -1,1189 +0,0 @@ -/* - * 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_82576: - 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, IMS_ENABLE_MASK ); - 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_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; - uint32_t txdctl; - - 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; - - if (hw->mac_type == e1000_82576) { - txdctl = E1000_READ_REG ( hw, TXDCTL ); - txdctl |= E1000_TXDCTL_QUEUE_ENABLE; - E1000_WRITE_REG ( hw, TXDCTL, txdctl ); - } - - /* 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 ); -} - -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_refill_rx_ring - allocate Rx io_buffers - * - * @v adapter e1000 private structure - * - * @ret rc Returns 0 on success, negative on failure - **/ -int e1000_refill_rx_ring ( struct e1000_adapter *adapter ) -{ - int i, rx_curr; - int rc = 0; - struct e1000_rx_desc *rx_curr_desc; - struct e1000_hw *hw = &adapter->hw; - struct io_buffer *iob; - - DBG ("e1000_refill_rx_ring\n"); - - for ( i = 0; i < NUM_RX_DESC; i++ ) { - rx_curr = ( ( adapter->rx_curr + i ) % NUM_RX_DESC ); - rx_curr_desc = adapter->rx_base + rx_curr; - - if ( rx_curr_desc->status & E1000_RXD_STAT_DD ) - continue; - - if ( adapter->rx_iobuf[rx_curr] != NULL ) - continue; - - DBG2 ( "Refilling rx desc %d\n", rx_curr ); - - iob = alloc_iob ( MAXIMUM_ETHERNET_VLAN_SIZE ); - adapter->rx_iobuf[rx_curr] = iob; - - if ( ! iob ) { - DBG ( "alloc_iob failed\n" ); - rc = -ENOMEM; - break; - } else { - rx_curr_desc->buffer_addr = virt_to_bus ( iob->data ); - - E1000_WRITE_REG ( hw, RDT, rx_curr ); - } - } - return rc; -} - -/** - * 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, rc = 0; - - 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++ ) { - /* let e1000_refill_rx_ring() io_buffer allocations */ - adapter->rx_iobuf[i] = NULL; - } - - /* allocate io_buffers */ - rc = e1000_refill_rx_ring ( adapter ); - if ( rc < 0 ) - e1000_free_rx_resources ( adapter ); - - return rc; -} - -/** - * 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, rxdctl, mrqc, rxcsum; - - 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 ); - E1000_WRITE_FLUSH ( hw ); - mdelay(10); - - 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 ); - if (hw->mac_type == e1000_82576) - E1000_WRITE_REG ( hw, RDT, 0 ); - else - E1000_WRITE_REG ( hw, RDT, NUM_RX_DESC - 1 ); - - /* This doesn't seem to be necessary for correct operation, - * but it seems as well to be implicit - */ - if (hw->mac_type == e1000_82576) { - rxdctl = E1000_READ_REG ( hw, RXDCTL ); - rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; - rxdctl &= 0xFFF00000; - rxdctl |= IGB_RX_PTHRESH; - rxdctl |= IGB_RX_HTHRESH << 8; - rxdctl |= IGB_RX_WTHRESH << 16; - E1000_WRITE_REG ( hw, RXDCTL, rxdctl ); - E1000_WRITE_FLUSH ( hw ); - - rxcsum = E1000_READ_REG(hw, RXCSUM); - rxcsum &= ~( E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPPCSE ); - E1000_WRITE_REG ( hw, RXCSUM, 0 ); - - /* The initial value for MRQC disables multiple receive - * queues, however this setting is not recommended. - * - Intel® 82576 Gigabit Ethernet Controller Datasheet r2.41 - * Section 8.10.9 Multiple Queues Command Register - MRQC - */ - mrqc = E1000_MRQC_ENABLE_VMDQ; - E1000_WRITE_REG ( hw, MRQC, mrqc ); - } - - /* 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 ); - - /* On the 82576, RDT([0]) must not be "bumped" before - * the enable bit of RXDCTL([0]) is set. - * - Intel® 82576 Gigabit Ethernet Controller Datasheet r2.41 - * Section 4.5.9 receive Initialization - * - * By observation I have found to occur when the enable bit of - * RCTL is set. The datasheet recommends polling for this bit, - * however as I see no evidence of this in the Linux igb driver - * I have omitted that step. - * - Simon Horman, May 2009 - */ - if (hw->mac_type == e1000_82576) - E1000_WRITE_REG ( hw, RDT, NUM_RX_DESC - 1 ); - - 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_82576: - pba = E1000_PBA_64K; - 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; - - /* This actually applies to < e1000_82575, one revision less than - * e1000_82576, but e1000_82575 isn't currently defined in the code */ - if (adapter->hw.mac_type < e1000_82576) { - /* 8-byte granularity */ - adapter->hw.fc_high_water = fc_high_water_mark & 0xFFF8; - adapter->hw.fc_low_water = adapter->hw.fc_high_water - 8; - } else { - /* 16-byte granularity */ - adapter->hw.fc_high_water = fc_high_water_mark & 0xFFF0; - adapter->hw.fc_low_water = adapter->hw.fc_high_water - 16; - } - - if (adapter->hw.mac_type == e1000_80003es2lan || - adapter->hw.mac_type == e1000_82576) - 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 e1000_tx_desc *tx_curr_desc; - struct e1000_rx_desc *rx_curr_desc; - uint32_t i; - - 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; - - if ( adapter->rx_iobuf[i] == NULL ) - 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; - - iob_put ( adapter->rx_iobuf[i], rx_len ); - - if ( rx_err & E1000_RXD_ERR_FRAME_ERR_MASK ) { - - netdev_rx_err ( netdev, adapter->rx_iobuf[i], -EINVAL ); - DBG ( "e1000_poll: Corrupted packet received!" - " rx_err: %#08x\n", rx_err ); - } else { - /* Add this packet to the receive queue. */ - netdev_rx ( netdev, adapter->rx_iobuf[i] ); - } - adapter->rx_iobuf[i] = NULL; - - memset ( rx_curr_desc, 0, sizeof ( *rx_curr_desc ) ); - - adapter->rx_curr = ( adapter->rx_curr + 1 ) % NUM_RX_DESC; - } - e1000_refill_rx_ring(adapter); -} - -/** - * 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" ); - - if ( enable ) - e1000_irq_enable ( adapter ); - else - e1000_irq_disable ( adapter ); -} - -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, 0x10c9, "e1000-0x10c9", "e1000-0x10c9", 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: - */ |