diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/net/intel.c')
| -rw-r--r-- | qemu/roms/ipxe/src/drivers/net/intel.c | 1069 |
1 files changed, 0 insertions, 1069 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/intel.c b/qemu/roms/ipxe/src/drivers/net/intel.c deleted file mode 100644 index 6309e9aa5..000000000 --- a/qemu/roms/ipxe/src/drivers/net/intel.c +++ /dev/null @@ -1,1069 +0,0 @@ -/* - * 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/malloc.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; - - /* 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 ) ); - } - - /* Always reset MAC. Required to reset the TX and RX rings. */ - ctrl = readl ( intel->regs + INTEL_CTRL ); - writel ( ( ctrl | INTEL_CTRL_RST ), intel->regs + INTEL_CTRL ); - mdelay ( INTEL_RESET_DELAY_MS ); - - /* Set a sensible default configuration */ - ctrl |= ( INTEL_CTRL_SLU | INTEL_CTRL_ASDE ); - ctrl &= ~( INTEL_CTRL_LRST | INTEL_CTRL_FRCSPD | INTEL_CTRL_FRCDPLX ); - writel ( ctrl, intel->regs + INTEL_CTRL ); - mdelay ( INTEL_RESET_DELAY_MS ); - - /* If link is already up, do not attempt to reset the PHY. On - * some models (notably ICH), performing a PHY reset seems to - * drop the link speed to 10Mbps. - */ - status = readl ( intel->regs + INTEL_STATUS ); - if ( status & INTEL_STATUS_LU ) { - DBGC ( intel, "INTEL %p MAC reset (ctrl %08x)\n", - intel, ctrl ); - 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 ); - - DBGC ( intel, "INTEL %p MAC+PHY reset (ctrl %08x)\n", intel, ctrl ); - 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 - * - ****************************************************************************** - */ - -/** - * 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 = malloc_dma ( ring->len, ring->len ); - if ( ! ring->desc ) - return -ENOMEM; - - /* Initialise descriptor ring */ - memset ( ring->desc, 0, ring->len ); - - /* Program ring address */ - address = virt_to_bus ( 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 [%08llx,%08llx)\n", - intel, ring->reg, ( ( unsigned long long ) address ), - ( ( unsigned long long ) address + 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 ) { - - /* Clear ring length */ - writel ( 0, ( intel->regs + ring->reg + INTEL_xDLEN ) ); - - /* Clear ring address */ - writel ( 0, ( intel->regs + ring->reg + INTEL_xDBAL ) ); - writel ( 0, ( intel->regs + ring->reg + INTEL_xDBAH ) ); - - /* Free descriptor ring */ - free_dma ( 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; - physaddr_t address; - unsigned int refilled = 0; - - /* Refill ring */ - while ( ( intel->rx.prod - intel->rx.cons ) < INTEL_RX_FILL ) { - - /* Allocate I/O buffer */ - iobuf = alloc_iob ( INTEL_RX_MAX_LEN ); - 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 */ - address = virt_to_bus ( iobuf->data ); - intel->rx.describe ( rx, address, 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 [%llx,%llx)\n", intel, rx_idx, - ( ( unsigned long long ) address ), - ( ( unsigned long long ) address + 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; - - for ( i = 0 ; i < INTEL_NUM_RX_DESC ; i++ ) { - if ( intel->rx_iobuf[i] ) - free_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 tctl; - uint32_t rctl; - int rc; - - /* 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; - physaddr_t address; - 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 */ - address = virt_to_bus ( iobuf->data ); - len = iob_len ( iobuf ); - intel->tx.describe ( tx, address, 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 [%llx,%llx)\n", intel, tx_idx, - ( ( unsigned long long ) address ), - ( ( unsigned long long ) address + 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 = ioremap ( pci->membase, INTEL_BAR_SIZE ); - if ( ! intel->regs ) { - rc = -ENODEV; - goto err_ioremap; - } - - /* 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, 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", 0 ), - 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", 0 ), - 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", 0 ), - PCI_ROM ( 0x8086, 0x153a, "i217lm", "I217-LM", 0 ), - PCI_ROM ( 0x8086, 0x153b, "i217v", "I217-V", 0 ), - PCI_ROM ( 0x8086, 0x1559, "i218v", "I218-V", 0), - PCI_ROM ( 0x8086, 0x155a, "i218lm", "I218-LM", 0), - PCI_ROM ( 0x8086, 0x15a0, "i218lm-2", "I218-LM", 0 ), - PCI_ROM ( 0x8086, 0x15a1, "i218v-2", "I218-V", 0 ), - PCI_ROM ( 0x8086, 0x15a2, "i218lm-3", "I218-LM", 0 ), - PCI_ROM ( 0x8086, 0x15a3, "i218v-3", "I218-V", 0 ), - 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, -}; |