diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/net/intelx.c')
| -rw-r--r-- | qemu/roms/ipxe/src/drivers/net/intelx.c | 484 |
1 files changed, 0 insertions, 484 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/intelx.c b/qemu/roms/ipxe/src/drivers/net/intelx.c deleted file mode 100644 index 982b74f12..000000000 --- a/qemu/roms/ipxe/src/drivers/net/intelx.c +++ /dev/null @@ -1,484 +0,0 @@ -/* - * Copyright (C) 2013 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 "intelx.h" - -/** @file - * - * Intel 10 Gigabit Ethernet network card driver - * - */ - -/****************************************************************************** - * - * MAC address - * - ****************************************************************************** - */ - -/** - * Try to fetch initial MAC address - * - * @v intel Intel device - * @v ral0 RAL0 register address - * @v hw_addr Hardware address to fill in - * @ret rc Return status code - */ -static int intelx_try_fetch_mac ( struct intel_nic *intel, unsigned int ral0, - uint8_t *hw_addr ) { - union intel_receive_address mac; - - /* Read current address from RAL0/RAH0 */ - mac.reg.low = cpu_to_le32 ( readl ( intel->regs + ral0 ) ); - mac.reg.high = cpu_to_le32 ( readl ( intel->regs + ral0 + - ( INTELX_RAH0 - INTELX_RAL0 ) ) ); - - /* Use current address if valid */ - if ( is_valid_ether_addr ( mac.raw ) ) { - DBGC ( intel, "INTEL %p has autoloaded MAC address %s at " - "%#05x\n", intel, eth_ntoa ( mac.raw ), ral0 ); - memcpy ( hw_addr, mac.raw, ETH_ALEN ); - return 0; - } - - return -ENOENT; -} - -/** - * Fetch initial MAC address - * - * @v intel Intel device - * @v hw_addr Hardware address to fill in - * @ret rc Return status code - */ -static int intelx_fetch_mac ( struct intel_nic *intel, uint8_t *hw_addr ) { - int rc; - - /* Try to fetch address from INTELX_RAL0 */ - if ( ( rc = intelx_try_fetch_mac ( intel, INTELX_RAL0, - hw_addr ) ) == 0 ) { - return 0; - } - - /* Try to fetch address from INTELX_RAL0_ALT */ - if ( ( rc = intelx_try_fetch_mac ( intel, INTELX_RAL0_ALT, - 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 intelx_reset ( struct intel_nic *intel ) { - uint32_t ctrl; - - /* Perform a global software reset */ - ctrl = readl ( intel->regs + INTELX_CTRL ); - writel ( ( ctrl | INTELX_CTRL_RST | INTELX_CTRL_LRST ), - intel->regs + INTELX_CTRL ); - mdelay ( INTELX_RESET_DELAY_MS ); - - DBGC ( intel, "INTEL %p reset (ctrl %08x)\n", intel, ctrl ); - return 0; -} - -/****************************************************************************** - * - * Link state - * - ****************************************************************************** - */ - -/** - * Check link state - * - * @v netdev Network device - */ -static void intelx_check_link ( struct net_device *netdev ) { - struct intel_nic *intel = netdev->priv; - uint32_t links; - - /* Read link status */ - links = readl ( intel->regs + INTELX_LINKS ); - DBGC ( intel, "INTEL %p link status is %08x\n", intel, links ); - - /* Update network device */ - if ( links & INTELX_LINKS_UP ) { - netdev_link_up ( netdev ); - } else { - netdev_link_down ( netdev ); - } -} - -/****************************************************************************** - * - * Network device interface - * - ****************************************************************************** - */ - -/** - * Open network device - * - * @v netdev Network device - * @ret rc Return status code - */ -static int intelx_open ( struct net_device *netdev ) { - struct intel_nic *intel = netdev->priv; - union intel_receive_address mac; - uint32_t ral0; - uint32_t rah0; - uint32_t dmatxctl; - uint32_t fctrl; - uint32_t srrctl; - uint32_t hlreg0; - uint32_t maxfrs; - uint32_t rdrxctl; - uint32_t rxctrl; - uint32_t dca_rxctrl; - 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 ) ); - ral0 = le32_to_cpu ( mac.reg.low ); - rah0 = ( le32_to_cpu ( mac.reg.high ) | INTELX_RAH0_AV ); - writel ( ral0, intel->regs + INTELX_RAL0 ); - writel ( rah0, intel->regs + INTELX_RAH0 ); - writel ( ral0, intel->regs + INTELX_RAL0_ALT ); - writel ( rah0, intel->regs + INTELX_RAH0_ALT ); - - /* Allocate interrupt vectors */ - writel ( ( INTELX_IVAR_RX0_DEFAULT | INTELX_IVAR_RX0_VALID | - INTELX_IVAR_TX0_DEFAULT | INTELX_IVAR_TX0_VALID ), - intel->regs + INTELX_IVAR ); - - /* Enable transmitter */ - dmatxctl = readl ( intel->regs + INTELX_DMATXCTL ); - dmatxctl |= INTELX_DMATXCTL_TE; - writel ( dmatxctl, intel->regs + INTELX_DMATXCTL ); - - /* Configure receive filter */ - fctrl = readl ( intel->regs + INTELX_FCTRL ); - fctrl |= ( INTELX_FCTRL_BAM | INTELX_FCTRL_UPE | INTELX_FCTRL_MPE ); - writel ( fctrl, intel->regs + INTELX_FCTRL ); - - /* Configure receive buffer sizes */ - srrctl = readl ( intel->regs + INTELX_SRRCTL ); - srrctl &= ~INTELX_SRRCTL_BSIZE_MASK; - srrctl |= INTELX_SRRCTL_BSIZE_DEFAULT; - writel ( srrctl, intel->regs + INTELX_SRRCTL ); - - /* Configure jumbo frames. Required to allow the extra 4-byte - * headroom for VLANs, since we don't use the hardware's - * native VLAN offload. - */ - hlreg0 = readl ( intel->regs + INTELX_HLREG0 ); - hlreg0 |= INTELX_HLREG0_JUMBOEN; - writel ( hlreg0, intel->regs + INTELX_HLREG0 ); - - /* Configure frame size */ - maxfrs = readl ( intel->regs + INTELX_MAXFRS ); - maxfrs &= ~INTELX_MAXFRS_MFS_MASK; - maxfrs |= INTELX_MAXFRS_MFS_DEFAULT; - writel ( maxfrs, intel->regs + INTELX_MAXFRS ); - - /* Configure receive DMA */ - rdrxctl = readl ( intel->regs + INTELX_RDRXCTL ); - rdrxctl |= INTELX_RDRXCTL_SECRC; - writel ( rdrxctl, intel->regs + INTELX_RDRXCTL ); - - /* Clear "must-be-zero" bit for direct cache access (DCA). We - * leave DCA disabled anyway, but if we do not clear this bit - * then the received packets contain garbage data. - */ - dca_rxctrl = readl ( intel->regs + INTELX_DCA_RXCTRL ); - dca_rxctrl &= ~INTELX_DCA_RXCTRL_MUST_BE_ZERO; - writel ( dca_rxctrl, intel->regs + INTELX_DCA_RXCTRL ); - - /* Enable receiver */ - rxctrl = readl ( intel->regs + INTELX_RXCTRL ); - rxctrl |= INTELX_RXCTRL_RXEN; - writel ( rxctrl, intel->regs + INTELX_RXCTRL ); - - /* Fill receive ring */ - intel_refill_rx ( intel ); - - /* Update link state */ - intelx_check_link ( netdev ); - - 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 intelx_close ( struct net_device *netdev ) { - struct intel_nic *intel = netdev->priv; - uint32_t rxctrl; - uint32_t dmatxctl; - - /* Disable receiver */ - rxctrl = readl ( intel->regs + INTELX_RXCTRL ); - rxctrl &= ~INTELX_RXCTRL_RXEN; - writel ( rxctrl, intel->regs + INTELX_RXCTRL ); - - /* Disable transmitter */ - dmatxctl = readl ( intel->regs + INTELX_DMATXCTL ); - dmatxctl &= ~INTELX_DMATXCTL_TE; - writel ( dmatxctl, intel->regs + INTELX_DMATXCTL ); - - /* 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 */ - intelx_reset ( intel ); -} - -/** - * Poll for completed and received packets - * - * @v netdev Network device - */ -static void intelx_poll ( struct net_device *netdev ) { - struct intel_nic *intel = netdev->priv; - uint32_t eicr; - - /* Check for and acknowledge interrupts */ - eicr = readl ( intel->regs + INTELX_EICR ); - if ( ! eicr ) - return; - - /* Poll for TX completions, if applicable */ - if ( eicr & INTELX_EIRQ_TX0 ) - intel_poll_tx ( netdev ); - - /* Poll for RX completions, if applicable */ - if ( eicr & ( INTELX_EIRQ_RX0 | INTELX_EIRQ_RXO ) ) - intel_poll_rx ( netdev ); - - /* Report receive overruns */ - if ( eicr & INTELX_EIRQ_RXO ) - netdev_rx_err ( netdev, NULL, -ENOBUFS ); - - /* Check link state, if applicable */ - if ( eicr & INTELX_EIRQ_LSC ) - intelx_check_link ( netdev ); - - /* Refill RX ring */ - intel_refill_rx ( intel ); -} - -/** - * Enable or disable interrupts - * - * @v netdev Network device - * @v enable Interrupts should be enabled - */ -static void intelx_irq ( struct net_device *netdev, int enable ) { - struct intel_nic *intel = netdev->priv; - uint32_t mask; - - mask = ( INTELX_EIRQ_LSC | INTELX_EIRQ_RXO | INTELX_EIRQ_TX0 | - INTELX_EIRQ_RX0 ); - if ( enable ) { - writel ( mask, intel->regs + INTELX_EIMS ); - } else { - writel ( mask, intel->regs + INTELX_EIMC ); - } -} - -/** Network device operations */ -static struct net_device_operations intelx_operations = { - .open = intelx_open, - .close = intelx_close, - .transmit = intel_transmit, - .poll = intelx_poll, - .irq = intelx_irq, -}; - -/****************************************************************************** - * - * PCI interface - * - ****************************************************************************** - */ - -/** - * Probe PCI device - * - * @v pci PCI device - * @ret rc Return status code - */ -static int intelx_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, &intelx_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_init_ring ( &intel->tx, INTEL_NUM_TX_DESC, INTELX_TD, - intel_describe_tx ); - intel_init_ring ( &intel->rx, INTEL_NUM_RX_DESC, INTELX_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 = intelx_reset ( intel ) ) != 0 ) - goto err_reset; - - /* Fetch MAC address */ - if ( ( rc = intelx_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 */ - intelx_check_link ( netdev ); - - return 0; - - unregister_netdev ( netdev ); - err_register_netdev: - err_fetch_mac: - intelx_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 intelx_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 */ - intelx_reset ( intel ); - - /* Free network device */ - iounmap ( intel->regs ); - netdev_nullify ( netdev ); - netdev_put ( netdev ); -} - -/** PCI device IDs */ -static struct pci_device_id intelx_nics[] = { - PCI_ROM ( 0x8086, 0x10f7, "82599-kx4", "82599 (KX/KX4)", 0 ), - PCI_ROM ( 0x8086, 0x10f8, "82599-combo-backplane", "82599 (combined backplane; KR/KX4/KX)", 0 ), - PCI_ROM ( 0x8086, 0x10f9, "82599-cx4", "82599 (CX4)", 0 ), - PCI_ROM ( 0x8086, 0x10fb, "82599-sfp", "82599 (SFI/SFP+)", 0 ), - PCI_ROM ( 0x8086, 0x10fc, "82599-xaui", "82599 (XAUI/BX4)", 0 ), - PCI_ROM ( 0x8086, 0x1528, "x540t", "X540-AT2/X540-BT2", 0 ), - PCI_ROM ( 0x8086, 0x154d, "82599-sfp-sf2", "82599 (SFI/SFP+)", 0 ), - PCI_ROM ( 0x8086, 0x1557, "82599en-sfp", "82599 (Single Port SFI Only)", 0 ), - PCI_ROM ( 0x8086, 0x1560, "x540t1", "X540-AT2/X540-BT2 (with single port NVM)", 0 ), -}; - -/** PCI driver */ -struct pci_driver intelx_driver __pci_driver = { - .ids = intelx_nics, - .id_count = ( sizeof ( intelx_nics ) / sizeof ( intelx_nics[0] ) ), - .probe = intelx_probe, - .remove = intelx_remove, -}; |