forked from Minki/linux
c3033b01d7
On Thu, 2008-03-06 at 10:07 -0800, Kok, Auke wrote: > send me a patch for e1000 and for ixgb and I'll happily apply those :) boolean_t to bool TRUE to true FALSE to false comment typo ahread to ahead Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
5391 lines
154 KiB
C
5391 lines
154 KiB
C
/*******************************************************************************
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Intel PRO/1000 Linux driver
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Copyright(c) 1999 - 2006 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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Linux NICS <linux.nics@intel.com>
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#include "e1000.h"
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#include <net/ip6_checksum.h>
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char e1000_driver_name[] = "e1000";
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static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
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#ifndef CONFIG_E1000_NAPI
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#define DRIVERNAPI
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#else
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#define DRIVERNAPI "-NAPI"
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#endif
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#define DRV_VERSION "7.3.20-k2"DRIVERNAPI
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const char e1000_driver_version[] = DRV_VERSION;
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static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
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/* e1000_pci_tbl - PCI Device ID Table
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*
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* Last entry must be all 0s
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*
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* Macro expands to...
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* {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
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*/
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#ifdef CONFIG_E1000E_ENABLED
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#define PCIE(x)
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#else
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#define PCIE(x) x,
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#endif
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static struct pci_device_id e1000_pci_tbl[] = {
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INTEL_E1000_ETHERNET_DEVICE(0x1000),
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INTEL_E1000_ETHERNET_DEVICE(0x1001),
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INTEL_E1000_ETHERNET_DEVICE(0x1004),
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INTEL_E1000_ETHERNET_DEVICE(0x1008),
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INTEL_E1000_ETHERNET_DEVICE(0x1009),
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INTEL_E1000_ETHERNET_DEVICE(0x100C),
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INTEL_E1000_ETHERNET_DEVICE(0x100D),
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INTEL_E1000_ETHERNET_DEVICE(0x100E),
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INTEL_E1000_ETHERNET_DEVICE(0x100F),
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INTEL_E1000_ETHERNET_DEVICE(0x1010),
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INTEL_E1000_ETHERNET_DEVICE(0x1011),
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INTEL_E1000_ETHERNET_DEVICE(0x1012),
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INTEL_E1000_ETHERNET_DEVICE(0x1013),
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INTEL_E1000_ETHERNET_DEVICE(0x1014),
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INTEL_E1000_ETHERNET_DEVICE(0x1015),
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INTEL_E1000_ETHERNET_DEVICE(0x1016),
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INTEL_E1000_ETHERNET_DEVICE(0x1017),
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INTEL_E1000_ETHERNET_DEVICE(0x1018),
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INTEL_E1000_ETHERNET_DEVICE(0x1019),
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INTEL_E1000_ETHERNET_DEVICE(0x101A),
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INTEL_E1000_ETHERNET_DEVICE(0x101D),
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INTEL_E1000_ETHERNET_DEVICE(0x101E),
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INTEL_E1000_ETHERNET_DEVICE(0x1026),
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INTEL_E1000_ETHERNET_DEVICE(0x1027),
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INTEL_E1000_ETHERNET_DEVICE(0x1028),
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x1049))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x104A))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x104B))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x104C))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x104D))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x105E))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x105F))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x1060))
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INTEL_E1000_ETHERNET_DEVICE(0x1075),
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INTEL_E1000_ETHERNET_DEVICE(0x1076),
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INTEL_E1000_ETHERNET_DEVICE(0x1077),
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INTEL_E1000_ETHERNET_DEVICE(0x1078),
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INTEL_E1000_ETHERNET_DEVICE(0x1079),
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INTEL_E1000_ETHERNET_DEVICE(0x107A),
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INTEL_E1000_ETHERNET_DEVICE(0x107B),
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INTEL_E1000_ETHERNET_DEVICE(0x107C),
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x107D))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x107E))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x107F))
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INTEL_E1000_ETHERNET_DEVICE(0x108A),
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x108B))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x108C))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x1096))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x1098))
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INTEL_E1000_ETHERNET_DEVICE(0x1099),
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x109A))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10A4))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10A5))
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INTEL_E1000_ETHERNET_DEVICE(0x10B5),
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10B9))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10BA))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10BB))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10BC))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10C4))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10C5))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10D5))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10D9))
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PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10DA))
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/* required last entry */
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{0,}
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};
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MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
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int e1000_up(struct e1000_adapter *adapter);
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void e1000_down(struct e1000_adapter *adapter);
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void e1000_reinit_locked(struct e1000_adapter *adapter);
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void e1000_reset(struct e1000_adapter *adapter);
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int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx);
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int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
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int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
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void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
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void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
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static int e1000_setup_tx_resources(struct e1000_adapter *adapter,
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struct e1000_tx_ring *txdr);
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static int e1000_setup_rx_resources(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rxdr);
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static void e1000_free_tx_resources(struct e1000_adapter *adapter,
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struct e1000_tx_ring *tx_ring);
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static void e1000_free_rx_resources(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring);
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void e1000_update_stats(struct e1000_adapter *adapter);
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static int e1000_init_module(void);
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static void e1000_exit_module(void);
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static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
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static void __devexit e1000_remove(struct pci_dev *pdev);
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static int e1000_alloc_queues(struct e1000_adapter *adapter);
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static int e1000_sw_init(struct e1000_adapter *adapter);
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static int e1000_open(struct net_device *netdev);
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static int e1000_close(struct net_device *netdev);
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static void e1000_configure_tx(struct e1000_adapter *adapter);
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static void e1000_configure_rx(struct e1000_adapter *adapter);
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static void e1000_setup_rctl(struct e1000_adapter *adapter);
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static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter);
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static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter);
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static void e1000_clean_tx_ring(struct e1000_adapter *adapter,
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struct e1000_tx_ring *tx_ring);
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static void e1000_clean_rx_ring(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring);
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static void e1000_set_rx_mode(struct net_device *netdev);
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static void e1000_update_phy_info(unsigned long data);
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static void e1000_watchdog(unsigned long data);
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static void e1000_82547_tx_fifo_stall(unsigned long data);
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static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev);
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static struct net_device_stats * e1000_get_stats(struct net_device *netdev);
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static int e1000_change_mtu(struct net_device *netdev, int new_mtu);
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static int e1000_set_mac(struct net_device *netdev, void *p);
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static irqreturn_t e1000_intr(int irq, void *data);
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static irqreturn_t e1000_intr_msi(int irq, void *data);
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static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
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struct e1000_tx_ring *tx_ring);
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#ifdef CONFIG_E1000_NAPI
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static int e1000_clean(struct napi_struct *napi, int budget);
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static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring,
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int *work_done, int work_to_do);
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static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring,
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int *work_done, int work_to_do);
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#else
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static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring);
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static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring);
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#endif
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static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring,
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int cleaned_count);
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static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
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struct e1000_rx_ring *rx_ring,
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int cleaned_count);
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static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
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static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr,
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int cmd);
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static void e1000_enter_82542_rst(struct e1000_adapter *adapter);
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static void e1000_leave_82542_rst(struct e1000_adapter *adapter);
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static void e1000_tx_timeout(struct net_device *dev);
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static void e1000_reset_task(struct work_struct *work);
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static void e1000_smartspeed(struct e1000_adapter *adapter);
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static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter,
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struct sk_buff *skb);
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static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp);
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static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid);
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static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid);
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static void e1000_restore_vlan(struct e1000_adapter *adapter);
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static int e1000_suspend(struct pci_dev *pdev, pm_message_t state);
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#ifdef CONFIG_PM
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static int e1000_resume(struct pci_dev *pdev);
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#endif
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static void e1000_shutdown(struct pci_dev *pdev);
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#ifdef CONFIG_NET_POLL_CONTROLLER
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/* for netdump / net console */
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static void e1000_netpoll (struct net_device *netdev);
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#endif
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#define COPYBREAK_DEFAULT 256
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static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT;
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module_param(copybreak, uint, 0644);
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MODULE_PARM_DESC(copybreak,
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"Maximum size of packet that is copied to a new buffer on receive");
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static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev,
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pci_channel_state_t state);
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static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev);
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static void e1000_io_resume(struct pci_dev *pdev);
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static struct pci_error_handlers e1000_err_handler = {
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.error_detected = e1000_io_error_detected,
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.slot_reset = e1000_io_slot_reset,
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.resume = e1000_io_resume,
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};
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static struct pci_driver e1000_driver = {
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.name = e1000_driver_name,
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.id_table = e1000_pci_tbl,
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.probe = e1000_probe,
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.remove = __devexit_p(e1000_remove),
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#ifdef CONFIG_PM
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/* Power Managment Hooks */
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.suspend = e1000_suspend,
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.resume = e1000_resume,
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#endif
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.shutdown = e1000_shutdown,
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.err_handler = &e1000_err_handler
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};
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MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
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MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
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/**
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* e1000_init_module - Driver Registration Routine
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*
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* e1000_init_module is the first routine called when the driver is
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* loaded. All it does is register with the PCI subsystem.
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**/
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static int __init
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e1000_init_module(void)
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{
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int ret;
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printk(KERN_INFO "%s - version %s\n",
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e1000_driver_string, e1000_driver_version);
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printk(KERN_INFO "%s\n", e1000_copyright);
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ret = pci_register_driver(&e1000_driver);
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if (copybreak != COPYBREAK_DEFAULT) {
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if (copybreak == 0)
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printk(KERN_INFO "e1000: copybreak disabled\n");
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else
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printk(KERN_INFO "e1000: copybreak enabled for "
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"packets <= %u bytes\n", copybreak);
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}
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return ret;
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}
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module_init(e1000_init_module);
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/**
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* e1000_exit_module - Driver Exit Cleanup Routine
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*
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* e1000_exit_module is called just before the driver is removed
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* from memory.
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**/
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static void __exit
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e1000_exit_module(void)
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{
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pci_unregister_driver(&e1000_driver);
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}
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module_exit(e1000_exit_module);
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static int e1000_request_irq(struct e1000_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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irq_handler_t handler = e1000_intr;
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int irq_flags = IRQF_SHARED;
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int err;
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if (adapter->hw.mac_type >= e1000_82571) {
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adapter->have_msi = !pci_enable_msi(adapter->pdev);
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if (adapter->have_msi) {
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handler = e1000_intr_msi;
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irq_flags = 0;
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}
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}
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err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name,
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netdev);
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if (err) {
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if (adapter->have_msi)
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pci_disable_msi(adapter->pdev);
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DPRINTK(PROBE, ERR,
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"Unable to allocate interrupt Error: %d\n", err);
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}
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return err;
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}
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static void e1000_free_irq(struct e1000_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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free_irq(adapter->pdev->irq, netdev);
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if (adapter->have_msi)
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pci_disable_msi(adapter->pdev);
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}
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/**
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* e1000_irq_disable - Mask off interrupt generation on the NIC
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* @adapter: board private structure
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**/
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static void
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e1000_irq_disable(struct e1000_adapter *adapter)
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{
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atomic_inc(&adapter->irq_sem);
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E1000_WRITE_REG(&adapter->hw, IMC, ~0);
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E1000_WRITE_FLUSH(&adapter->hw);
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synchronize_irq(adapter->pdev->irq);
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}
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/**
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* e1000_irq_enable - Enable default interrupt generation settings
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* @adapter: board private structure
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**/
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static void
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e1000_irq_enable(struct e1000_adapter *adapter)
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{
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if (likely(atomic_dec_and_test(&adapter->irq_sem))) {
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E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK);
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E1000_WRITE_FLUSH(&adapter->hw);
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}
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}
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static void
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e1000_update_mng_vlan(struct e1000_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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uint16_t vid = adapter->hw.mng_cookie.vlan_id;
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uint16_t old_vid = adapter->mng_vlan_id;
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if (adapter->vlgrp) {
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if (!vlan_group_get_device(adapter->vlgrp, vid)) {
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if (adapter->hw.mng_cookie.status &
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E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) {
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e1000_vlan_rx_add_vid(netdev, vid);
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adapter->mng_vlan_id = vid;
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} else
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adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
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if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) &&
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(vid != old_vid) &&
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!vlan_group_get_device(adapter->vlgrp, old_vid))
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e1000_vlan_rx_kill_vid(netdev, old_vid);
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} else
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adapter->mng_vlan_id = vid;
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}
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}
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/**
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* e1000_release_hw_control - release control of the h/w to f/w
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* @adapter: address of board private structure
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*
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* e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit.
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* For ASF and Pass Through versions of f/w this means that the
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* driver is no longer loaded. For AMT version (only with 82573) i
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* of the f/w this means that the network i/f is closed.
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*
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**/
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static void
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e1000_release_hw_control(struct e1000_adapter *adapter)
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{
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uint32_t ctrl_ext;
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uint32_t swsm;
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/* Let firmware taken over control of h/w */
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switch (adapter->hw.mac_type) {
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case e1000_82573:
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swsm = E1000_READ_REG(&adapter->hw, SWSM);
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E1000_WRITE_REG(&adapter->hw, SWSM,
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swsm & ~E1000_SWSM_DRV_LOAD);
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break;
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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_get_hw_control - get control of the h/w from f/w
|
|
* @adapter: address of board 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;
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
static void
|
|
e1000_init_manageability(struct e1000_adapter *adapter)
|
|
{
|
|
if (adapter->en_mng_pt) {
|
|
uint32_t manc = E1000_READ_REG(&adapter->hw, MANC);
|
|
|
|
/* disable hardware interception of ARP */
|
|
manc &= ~(E1000_MANC_ARP_EN);
|
|
|
|
/* enable receiving management packets to the host */
|
|
/* this will probably generate destination unreachable messages
|
|
* from the host OS, but the packets will be handled on SMBUS */
|
|
if (adapter->hw.has_manc2h) {
|
|
uint32_t manc2h = E1000_READ_REG(&adapter->hw, MANC2H);
|
|
|
|
manc |= E1000_MANC_EN_MNG2HOST;
|
|
#define E1000_MNG2HOST_PORT_623 (1 << 5)
|
|
#define E1000_MNG2HOST_PORT_664 (1 << 6)
|
|
manc2h |= E1000_MNG2HOST_PORT_623;
|
|
manc2h |= E1000_MNG2HOST_PORT_664;
|
|
E1000_WRITE_REG(&adapter->hw, MANC2H, manc2h);
|
|
}
|
|
|
|
E1000_WRITE_REG(&adapter->hw, MANC, manc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
e1000_release_manageability(struct e1000_adapter *adapter)
|
|
{
|
|
if (adapter->en_mng_pt) {
|
|
uint32_t manc = E1000_READ_REG(&adapter->hw, MANC);
|
|
|
|
/* re-enable hardware interception of ARP */
|
|
manc |= E1000_MANC_ARP_EN;
|
|
|
|
if (adapter->hw.has_manc2h)
|
|
manc &= ~E1000_MANC_EN_MNG2HOST;
|
|
|
|
/* don't explicitly have to mess with MANC2H since
|
|
* MANC has an enable disable that gates MANC2H */
|
|
|
|
E1000_WRITE_REG(&adapter->hw, MANC, manc);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* e1000_configure - configure the hardware for RX and TX
|
|
* @adapter = private board structure
|
|
**/
|
|
static void e1000_configure(struct e1000_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
int i;
|
|
|
|
e1000_set_rx_mode(netdev);
|
|
|
|
e1000_restore_vlan(adapter);
|
|
e1000_init_manageability(adapter);
|
|
|
|
e1000_configure_tx(adapter);
|
|
e1000_setup_rctl(adapter);
|
|
e1000_configure_rx(adapter);
|
|
/* call E1000_DESC_UNUSED which always leaves
|
|
* at least 1 descriptor unused to make sure
|
|
* next_to_use != next_to_clean */
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
struct e1000_rx_ring *ring = &adapter->rx_ring[i];
|
|
adapter->alloc_rx_buf(adapter, ring,
|
|
E1000_DESC_UNUSED(ring));
|
|
}
|
|
|
|
adapter->tx_queue_len = netdev->tx_queue_len;
|
|
}
|
|
|
|
int e1000_up(struct e1000_adapter *adapter)
|
|
{
|
|
/* hardware has been reset, we need to reload some things */
|
|
e1000_configure(adapter);
|
|
|
|
clear_bit(__E1000_DOWN, &adapter->flags);
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
napi_enable(&adapter->napi);
|
|
#endif
|
|
e1000_irq_enable(adapter);
|
|
|
|
/* fire a link change interrupt to start the watchdog */
|
|
E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_power_up_phy - restore link in case the phy was powered down
|
|
* @adapter: address of board private structure
|
|
*
|
|
* The phy may be powered down to save power and turn off link when the
|
|
* driver is unloaded and wake on lan is not enabled (among others)
|
|
* *** this routine MUST be followed by a call to e1000_reset ***
|
|
*
|
|
**/
|
|
|
|
void e1000_power_up_phy(struct e1000_adapter *adapter)
|
|
{
|
|
uint16_t mii_reg = 0;
|
|
|
|
/* Just clear the power down bit to wake the phy back up */
|
|
if (adapter->hw.media_type == e1000_media_type_copper) {
|
|
/* according to the manual, the phy will retain its
|
|
* settings across a power-down/up cycle */
|
|
e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
|
|
mii_reg &= ~MII_CR_POWER_DOWN;
|
|
e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
|
|
}
|
|
}
|
|
|
|
static void e1000_power_down_phy(struct e1000_adapter *adapter)
|
|
{
|
|
/* Power down the PHY so no link is implied when interface is down *
|
|
* The PHY cannot be powered down if any of the following is true *
|
|
* (a) WoL is enabled
|
|
* (b) AMT is active
|
|
* (c) SoL/IDER session is active */
|
|
if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 &&
|
|
adapter->hw.media_type == e1000_media_type_copper) {
|
|
uint16_t mii_reg = 0;
|
|
|
|
switch (adapter->hw.mac_type) {
|
|
case e1000_82540:
|
|
case e1000_82545:
|
|
case e1000_82545_rev_3:
|
|
case e1000_82546:
|
|
case e1000_82546_rev_3:
|
|
case e1000_82541:
|
|
case e1000_82541_rev_2:
|
|
case e1000_82547:
|
|
case e1000_82547_rev_2:
|
|
if (E1000_READ_REG(&adapter->hw, MANC) &
|
|
E1000_MANC_SMBUS_EN)
|
|
goto out;
|
|
break;
|
|
case e1000_82571:
|
|
case e1000_82572:
|
|
case e1000_82573:
|
|
case e1000_80003es2lan:
|
|
case e1000_ich8lan:
|
|
if (e1000_check_mng_mode(&adapter->hw) ||
|
|
e1000_check_phy_reset_block(&adapter->hw))
|
|
goto out;
|
|
break;
|
|
default:
|
|
goto out;
|
|
}
|
|
e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg);
|
|
mii_reg |= MII_CR_POWER_DOWN;
|
|
e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg);
|
|
mdelay(1);
|
|
}
|
|
out:
|
|
return;
|
|
}
|
|
|
|
void
|
|
e1000_down(struct e1000_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
/* signal that we're down so the interrupt handler does not
|
|
* reschedule our watchdog timer */
|
|
set_bit(__E1000_DOWN, &adapter->flags);
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
napi_disable(&adapter->napi);
|
|
atomic_set(&adapter->irq_sem, 0);
|
|
#endif
|
|
e1000_irq_disable(adapter);
|
|
|
|
del_timer_sync(&adapter->tx_fifo_stall_timer);
|
|
del_timer_sync(&adapter->watchdog_timer);
|
|
del_timer_sync(&adapter->phy_info_timer);
|
|
|
|
netdev->tx_queue_len = adapter->tx_queue_len;
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
|
|
e1000_reset(adapter);
|
|
e1000_clean_all_tx_rings(adapter);
|
|
e1000_clean_all_rx_rings(adapter);
|
|
}
|
|
|
|
void
|
|
e1000_reinit_locked(struct e1000_adapter *adapter)
|
|
{
|
|
WARN_ON(in_interrupt());
|
|
while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
|
|
msleep(1);
|
|
e1000_down(adapter);
|
|
e1000_up(adapter);
|
|
clear_bit(__E1000_RESETTING, &adapter->flags);
|
|
}
|
|
|
|
void
|
|
e1000_reset(struct e1000_adapter *adapter)
|
|
{
|
|
uint32_t pba = 0, tx_space, min_tx_space, min_rx_space;
|
|
uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF;
|
|
bool legacy_pba_adjust = false;
|
|
|
|
/* Repartition Pba for greater than 9k mtu
|
|
* To take effect CTRL.RST is required.
|
|
*/
|
|
|
|
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:
|
|
legacy_pba_adjust = true;
|
|
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:
|
|
legacy_pba_adjust = true;
|
|
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;
|
|
}
|
|
|
|
if (legacy_pba_adjust) {
|
|
if (adapter->netdev->mtu > E1000_RXBUFFER_8192)
|
|
pba -= 8; /* allocate more FIFO for Tx */
|
|
|
|
if (adapter->hw.mac_type == e1000_82547) {
|
|
adapter->tx_fifo_head = 0;
|
|
adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT;
|
|
adapter->tx_fifo_size =
|
|
(E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT;
|
|
atomic_set(&adapter->tx_fifo_stall, 0);
|
|
}
|
|
} else if (adapter->hw.max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) {
|
|
/* adjust PBA for jumbo frames */
|
|
E1000_WRITE_REG(&adapter->hw, PBA, pba);
|
|
|
|
/* To maintain wire speed transmits, the Tx FIFO should be
|
|
* large enough to accomodate two full transmit packets,
|
|
* rounded up to the next 1KB and expressed in KB. Likewise,
|
|
* the Rx FIFO should be large enough to accomodate at least
|
|
* one full receive packet and is similarly rounded up and
|
|
* expressed in KB. */
|
|
pba = E1000_READ_REG(&adapter->hw, PBA);
|
|
/* upper 16 bits has Tx packet buffer allocation size in KB */
|
|
tx_space = pba >> 16;
|
|
/* lower 16 bits has Rx packet buffer allocation size in KB */
|
|
pba &= 0xffff;
|
|
/* don't include ethernet FCS because hardware appends/strips */
|
|
min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE +
|
|
VLAN_TAG_SIZE;
|
|
min_tx_space = min_rx_space;
|
|
min_tx_space *= 2;
|
|
min_tx_space = ALIGN(min_tx_space, 1024);
|
|
min_tx_space >>= 10;
|
|
min_rx_space = ALIGN(min_rx_space, 1024);
|
|
min_rx_space >>= 10;
|
|
|
|
/* If current Tx allocation is less than the min Tx FIFO size,
|
|
* and the min Tx FIFO size is less than the current Rx FIFO
|
|
* allocation, take space away from current Rx allocation */
|
|
if (tx_space < min_tx_space &&
|
|
((min_tx_space - tx_space) < pba)) {
|
|
pba = pba - (min_tx_space - tx_space);
|
|
|
|
/* PCI/PCIx hardware has PBA alignment constraints */
|
|
switch (adapter->hw.mac_type) {
|
|
case e1000_82545 ... e1000_82546_rev_3:
|
|
pba &= ~(E1000_PBA_8K - 1);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* if short on rx space, rx wins and must trump tx
|
|
* adjustment or use Early Receive if available */
|
|
if (pba < min_rx_space) {
|
|
switch (adapter->hw.mac_type) {
|
|
case e1000_82573:
|
|
/* ERT enabled in e1000_configure_rx */
|
|
break;
|
|
default:
|
|
pba = min_rx_space;
|
|
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))
|
|
DPRINTK(PROBE, ERR, "Hardware Error\n");
|
|
e1000_update_mng_vlan(adapter);
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */
|
|
E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE);
|
|
|
|
e1000_reset_adaptive(&adapter->hw);
|
|
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);
|
|
}
|
|
|
|
e1000_release_manageability(adapter);
|
|
}
|
|
|
|
/**
|
|
* Dump the eeprom for users having checksum issues
|
|
**/
|
|
static void e1000_dump_eeprom(struct e1000_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct ethtool_eeprom eeprom;
|
|
const struct ethtool_ops *ops = netdev->ethtool_ops;
|
|
u8 *data;
|
|
int i;
|
|
u16 csum_old, csum_new = 0;
|
|
|
|
eeprom.len = ops->get_eeprom_len(netdev);
|
|
eeprom.offset = 0;
|
|
|
|
data = kmalloc(eeprom.len, GFP_KERNEL);
|
|
if (!data) {
|
|
printk(KERN_ERR "Unable to allocate memory to dump EEPROM"
|
|
" data\n");
|
|
return;
|
|
}
|
|
|
|
ops->get_eeprom(netdev, &eeprom, data);
|
|
|
|
csum_old = (data[EEPROM_CHECKSUM_REG * 2]) +
|
|
(data[EEPROM_CHECKSUM_REG * 2 + 1] << 8);
|
|
for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2)
|
|
csum_new += data[i] + (data[i + 1] << 8);
|
|
csum_new = EEPROM_SUM - csum_new;
|
|
|
|
printk(KERN_ERR "/*********************/\n");
|
|
printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old);
|
|
printk(KERN_ERR "Calculated : 0x%04x\n", csum_new);
|
|
|
|
printk(KERN_ERR "Offset Values\n");
|
|
printk(KERN_ERR "======== ======\n");
|
|
print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0);
|
|
|
|
printk(KERN_ERR "Include this output when contacting your support "
|
|
"provider.\n");
|
|
printk(KERN_ERR "This is not a software error! Something bad "
|
|
"happened to your hardware or\n");
|
|
printk(KERN_ERR "EEPROM image. Ignoring this "
|
|
"problem could result in further problems,\n");
|
|
printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n");
|
|
printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, "
|
|
"which is invalid\n");
|
|
printk(KERN_ERR "and requires you to set the proper MAC "
|
|
"address manually before continuing\n");
|
|
printk(KERN_ERR "to enable this network device.\n");
|
|
printk(KERN_ERR "Please inspect the EEPROM dump and report the issue "
|
|
"to your hardware vendor\n");
|
|
printk(KERN_ERR "or Intel Customer Support: linux-nics@intel.com\n");
|
|
printk(KERN_ERR "/*********************/\n");
|
|
|
|
kfree(data);
|
|
}
|
|
|
|
/**
|
|
* e1000_probe - Device Initialization Routine
|
|
* @pdev: PCI device information struct
|
|
* @ent: entry in e1000_pci_tbl
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
*
|
|
* e1000_probe initializes an adapter identified by a pci_dev structure.
|
|
* The OS initialization, configuring of the adapter private structure,
|
|
* and a hardware reset occur.
|
|
**/
|
|
|
|
static int __devinit
|
|
e1000_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
struct net_device *netdev;
|
|
struct e1000_adapter *adapter;
|
|
|
|
static int cards_found = 0;
|
|
static int global_quad_port_a = 0; /* global ksp3 port a indication */
|
|
int i, err, pci_using_dac;
|
|
uint16_t eeprom_data = 0;
|
|
uint16_t eeprom_apme_mask = E1000_EEPROM_APME;
|
|
DECLARE_MAC_BUF(mac);
|
|
|
|
if ((err = pci_enable_device(pdev)))
|
|
return err;
|
|
|
|
if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) &&
|
|
!(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) {
|
|
pci_using_dac = 1;
|
|
} else {
|
|
if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) &&
|
|
(err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) {
|
|
E1000_ERR("No usable DMA configuration, aborting\n");
|
|
goto err_dma;
|
|
}
|
|
pci_using_dac = 0;
|
|
}
|
|
|
|
if ((err = pci_request_regions(pdev, e1000_driver_name)))
|
|
goto err_pci_reg;
|
|
|
|
pci_set_master(pdev);
|
|
|
|
err = -ENOMEM;
|
|
netdev = alloc_etherdev(sizeof(struct e1000_adapter));
|
|
if (!netdev)
|
|
goto err_alloc_etherdev;
|
|
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
|
|
pci_set_drvdata(pdev, netdev);
|
|
adapter = netdev_priv(netdev);
|
|
adapter->netdev = netdev;
|
|
adapter->pdev = pdev;
|
|
adapter->hw.back = adapter;
|
|
adapter->msg_enable = (1 << debug) - 1;
|
|
|
|
err = -EIO;
|
|
adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, BAR_0),
|
|
pci_resource_len(pdev, BAR_0));
|
|
if (!adapter->hw.hw_addr)
|
|
goto err_ioremap;
|
|
|
|
for (i = BAR_1; i <= BAR_5; i++) {
|
|
if (pci_resource_len(pdev, i) == 0)
|
|
continue;
|
|
if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
|
|
adapter->hw.io_base = pci_resource_start(pdev, i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
netdev->open = &e1000_open;
|
|
netdev->stop = &e1000_close;
|
|
netdev->hard_start_xmit = &e1000_xmit_frame;
|
|
netdev->get_stats = &e1000_get_stats;
|
|
netdev->set_rx_mode = &e1000_set_rx_mode;
|
|
netdev->set_mac_address = &e1000_set_mac;
|
|
netdev->change_mtu = &e1000_change_mtu;
|
|
netdev->do_ioctl = &e1000_ioctl;
|
|
e1000_set_ethtool_ops(netdev);
|
|
netdev->tx_timeout = &e1000_tx_timeout;
|
|
netdev->watchdog_timeo = 5 * HZ;
|
|
#ifdef CONFIG_E1000_NAPI
|
|
netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
|
|
#endif
|
|
netdev->vlan_rx_register = e1000_vlan_rx_register;
|
|
netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid;
|
|
netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid;
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
netdev->poll_controller = e1000_netpoll;
|
|
#endif
|
|
strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1);
|
|
|
|
adapter->bd_number = cards_found;
|
|
|
|
/* setup the private structure */
|
|
|
|
if ((err = e1000_sw_init(adapter)))
|
|
goto err_sw_init;
|
|
|
|
err = -EIO;
|
|
/* Flash BAR mapping must happen after e1000_sw_init
|
|
* because it depends on mac_type */
|
|
if ((adapter->hw.mac_type == e1000_ich8lan) &&
|
|
(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) {
|
|
adapter->hw.flash_address =
|
|
ioremap(pci_resource_start(pdev, 1),
|
|
pci_resource_len(pdev, 1));
|
|
if (!adapter->hw.flash_address)
|
|
goto err_flashmap;
|
|
}
|
|
|
|
if (e1000_check_phy_reset_block(&adapter->hw))
|
|
DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n");
|
|
|
|
if (adapter->hw.mac_type >= e1000_82543) {
|
|
netdev->features = NETIF_F_SG |
|
|
NETIF_F_HW_CSUM |
|
|
NETIF_F_HW_VLAN_TX |
|
|
NETIF_F_HW_VLAN_RX |
|
|
NETIF_F_HW_VLAN_FILTER;
|
|
if (adapter->hw.mac_type == e1000_ich8lan)
|
|
netdev->features &= ~NETIF_F_HW_VLAN_FILTER;
|
|
}
|
|
|
|
if ((adapter->hw.mac_type >= e1000_82544) &&
|
|
(adapter->hw.mac_type != e1000_82547))
|
|
netdev->features |= NETIF_F_TSO;
|
|
|
|
if (adapter->hw.mac_type > e1000_82547_rev_2)
|
|
netdev->features |= NETIF_F_TSO6;
|
|
if (pci_using_dac)
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
|
|
netdev->features |= NETIF_F_LLTX;
|
|
|
|
adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw);
|
|
|
|
/* initialize eeprom parameters */
|
|
if (e1000_init_eeprom_params(&adapter->hw)) {
|
|
E1000_ERR("EEPROM initialization failed\n");
|
|
goto err_eeprom;
|
|
}
|
|
|
|
/* before reading the EEPROM, reset the controller to
|
|
* put the device in a known good starting state */
|
|
|
|
e1000_reset_hw(&adapter->hw);
|
|
|
|
/* make sure the EEPROM is good */
|
|
if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) {
|
|
DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n");
|
|
e1000_dump_eeprom(adapter);
|
|
/*
|
|
* set MAC address to all zeroes to invalidate and temporary
|
|
* disable this device for the user. This blocks regular
|
|
* traffic while still permitting ethtool ioctls from reaching
|
|
* the hardware as well as allowing the user to run the
|
|
* interface after manually setting a hw addr using
|
|
* `ip set address`
|
|
*/
|
|
memset(adapter->hw.mac_addr, 0, netdev->addr_len);
|
|
} else {
|
|
/* copy the MAC address out of the EEPROM */
|
|
if (e1000_read_mac_addr(&adapter->hw))
|
|
DPRINTK(PROBE, ERR, "EEPROM Read Error\n");
|
|
}
|
|
/* don't block initalization here due to bad MAC address */
|
|
memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
|
|
memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len);
|
|
|
|
if (!is_valid_ether_addr(netdev->perm_addr))
|
|
DPRINTK(PROBE, ERR, "Invalid MAC Address\n");
|
|
|
|
e1000_get_bus_info(&adapter->hw);
|
|
|
|
init_timer(&adapter->tx_fifo_stall_timer);
|
|
adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall;
|
|
adapter->tx_fifo_stall_timer.data = (unsigned long) adapter;
|
|
|
|
init_timer(&adapter->watchdog_timer);
|
|
adapter->watchdog_timer.function = &e1000_watchdog;
|
|
adapter->watchdog_timer.data = (unsigned long) adapter;
|
|
|
|
init_timer(&adapter->phy_info_timer);
|
|
adapter->phy_info_timer.function = &e1000_update_phy_info;
|
|
adapter->phy_info_timer.data = (unsigned long) adapter;
|
|
|
|
INIT_WORK(&adapter->reset_task, e1000_reset_task);
|
|
|
|
e1000_check_options(adapter);
|
|
|
|
/* Initial Wake on LAN setting
|
|
* If APM wake is enabled in the EEPROM,
|
|
* enable the ACPI Magic Packet filter
|
|
*/
|
|
|
|
switch (adapter->hw.mac_type) {
|
|
case e1000_82542_rev2_0:
|
|
case e1000_82542_rev2_1:
|
|
case e1000_82543:
|
|
break;
|
|
case e1000_82544:
|
|
e1000_read_eeprom(&adapter->hw,
|
|
EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
|
|
eeprom_apme_mask = E1000_EEPROM_82544_APM;
|
|
break;
|
|
case e1000_ich8lan:
|
|
e1000_read_eeprom(&adapter->hw,
|
|
EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data);
|
|
eeprom_apme_mask = E1000_EEPROM_ICH8_APME;
|
|
break;
|
|
case e1000_82546:
|
|
case e1000_82546_rev_3:
|
|
case e1000_82571:
|
|
case e1000_80003es2lan:
|
|
if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){
|
|
e1000_read_eeprom(&adapter->hw,
|
|
EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data);
|
|
break;
|
|
}
|
|
/* Fall Through */
|
|
default:
|
|
e1000_read_eeprom(&adapter->hw,
|
|
EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data);
|
|
break;
|
|
}
|
|
if (eeprom_data & eeprom_apme_mask)
|
|
adapter->eeprom_wol |= E1000_WUFC_MAG;
|
|
|
|
/* now that we have the eeprom settings, apply the special cases
|
|
* where the eeprom may be wrong or the board simply won't support
|
|
* wake on lan on a particular port */
|
|
switch (pdev->device) {
|
|
case E1000_DEV_ID_82546GB_PCIE:
|
|
adapter->eeprom_wol = 0;
|
|
break;
|
|
case E1000_DEV_ID_82546EB_FIBER:
|
|
case E1000_DEV_ID_82546GB_FIBER:
|
|
case E1000_DEV_ID_82571EB_FIBER:
|
|
/* Wake events only supported on port A for dual fiber
|
|
* regardless of eeprom setting */
|
|
if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1)
|
|
adapter->eeprom_wol = 0;
|
|
break;
|
|
case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
|
|
case E1000_DEV_ID_82571EB_QUAD_COPPER:
|
|
case E1000_DEV_ID_82571EB_QUAD_FIBER:
|
|
case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
|
|
case E1000_DEV_ID_82571PT_QUAD_COPPER:
|
|
/* if quad port adapter, disable WoL on all but port A */
|
|
if (global_quad_port_a != 0)
|
|
adapter->eeprom_wol = 0;
|
|
else
|
|
adapter->quad_port_a = 1;
|
|
/* Reset for multiple quad port adapters */
|
|
if (++global_quad_port_a == 4)
|
|
global_quad_port_a = 0;
|
|
break;
|
|
}
|
|
|
|
/* initialize the wol settings based on the eeprom settings */
|
|
adapter->wol = adapter->eeprom_wol;
|
|
|
|
/* print bus type/speed/width info */
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
DPRINTK(PROBE, INFO, "(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"));
|
|
}
|
|
|
|
printk("%s\n", print_mac(mac, netdev->dev_addr));
|
|
|
|
if (adapter->hw.bus_type == e1000_bus_type_pci_express) {
|
|
DPRINTK(PROBE, WARNING, "This device (id %04x:%04x) will no "
|
|
"longer be supported by this driver in the future.\n",
|
|
pdev->vendor, pdev->device);
|
|
DPRINTK(PROBE, WARNING, "please use the \"e1000e\" "
|
|
"driver instead.\n");
|
|
}
|
|
|
|
/* reset the hardware with the new settings */
|
|
e1000_reset(adapter);
|
|
|
|
/* If the controller is 82573 and f/w is AMT, do not set
|
|
* DRV_LOAD until the interface is up. For all other cases,
|
|
* let the f/w know that the h/w is now under the control
|
|
* of the driver. */
|
|
if (adapter->hw.mac_type != e1000_82573 ||
|
|
!e1000_check_mng_mode(&adapter->hw))
|
|
e1000_get_hw_control(adapter);
|
|
|
|
/* tell the stack to leave us alone until e1000_open() is called */
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
|
|
strcpy(netdev->name, "eth%d");
|
|
if ((err = register_netdev(netdev)))
|
|
goto err_register;
|
|
|
|
DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n");
|
|
|
|
cards_found++;
|
|
return 0;
|
|
|
|
err_register:
|
|
e1000_release_hw_control(adapter);
|
|
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:
|
|
#ifdef CONFIG_E1000_NAPI
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
dev_put(&adapter->polling_netdev[i]);
|
|
#endif
|
|
|
|
kfree(adapter->tx_ring);
|
|
kfree(adapter->rx_ring);
|
|
#ifdef CONFIG_E1000_NAPI
|
|
kfree(adapter->polling_netdev);
|
|
#endif
|
|
err_sw_init:
|
|
iounmap(adapter->hw.hw_addr);
|
|
err_ioremap:
|
|
free_netdev(netdev);
|
|
err_alloc_etherdev:
|
|
pci_release_regions(pdev);
|
|
err_pci_reg:
|
|
err_dma:
|
|
pci_disable_device(pdev);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* e1000_remove - Device Removal Routine
|
|
* @pdev: PCI device information struct
|
|
*
|
|
* e1000_remove is called by the PCI subsystem to alert the driver
|
|
* that it should release a PCI device. The could be caused by a
|
|
* Hot-Plug event, or because the driver is going to be removed from
|
|
* memory.
|
|
**/
|
|
|
|
static void __devexit
|
|
e1000_remove(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
#ifdef CONFIG_E1000_NAPI
|
|
int i;
|
|
#endif
|
|
|
|
cancel_work_sync(&adapter->reset_task);
|
|
|
|
e1000_release_manageability(adapter);
|
|
|
|
/* Release control of h/w to f/w. If f/w is AMT enabled, this
|
|
* would have already happened in close and is redundant. */
|
|
e1000_release_hw_control(adapter);
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
dev_put(&adapter->polling_netdev[i]);
|
|
#endif
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
if (!e1000_check_phy_reset_block(&adapter->hw))
|
|
e1000_phy_hw_reset(&adapter->hw);
|
|
|
|
kfree(adapter->tx_ring);
|
|
kfree(adapter->rx_ring);
|
|
#ifdef CONFIG_E1000_NAPI
|
|
kfree(adapter->polling_netdev);
|
|
#endif
|
|
|
|
iounmap(adapter->hw.hw_addr);
|
|
if (adapter->hw.flash_address)
|
|
iounmap(adapter->hw.flash_address);
|
|
pci_release_regions(pdev);
|
|
|
|
free_netdev(netdev);
|
|
|
|
pci_disable_device(pdev);
|
|
}
|
|
|
|
/**
|
|
* e1000_sw_init - Initialize general software structures (struct e1000_adapter)
|
|
* @adapter: board private structure to initialize
|
|
*
|
|
* 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 __devinit
|
|
e1000_sw_init(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
#ifdef CONFIG_E1000_NAPI
|
|
int i;
|
|
#endif
|
|
|
|
/* PCI config space info */
|
|
|
|
hw->vendor_id = pdev->vendor;
|
|
hw->device_id = pdev->device;
|
|
hw->subsystem_vendor_id = pdev->subsystem_vendor;
|
|
hw->subsystem_id = pdev->subsystem_device;
|
|
hw->revision_id = pdev->revision;
|
|
|
|
pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
|
|
|
|
adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
|
|
adapter->rx_ps_bsize0 = E1000_RXBUFFER_128;
|
|
hw->max_frame_size = netdev->mtu +
|
|
ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
|
|
hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
|
|
|
|
/* identify the MAC */
|
|
|
|
if (e1000_set_mac_type(hw)) {
|
|
DPRINTK(PROBE, ERR, "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->wait_autoneg_complete = false;
|
|
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;
|
|
}
|
|
|
|
adapter->num_tx_queues = 1;
|
|
adapter->num_rx_queues = 1;
|
|
|
|
if (e1000_alloc_queues(adapter)) {
|
|
DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
adapter->polling_netdev[i].priv = adapter;
|
|
dev_hold(&adapter->polling_netdev[i]);
|
|
set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state);
|
|
}
|
|
spin_lock_init(&adapter->tx_queue_lock);
|
|
#endif
|
|
|
|
/* Explicitly disable IRQ since the NIC can be in any state. */
|
|
atomic_set(&adapter->irq_sem, 0);
|
|
e1000_irq_disable(adapter);
|
|
|
|
spin_lock_init(&adapter->stats_lock);
|
|
|
|
set_bit(__E1000_DOWN, &adapter->flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_alloc_queues - Allocate memory for all rings
|
|
* @adapter: board private structure to initialize
|
|
*
|
|
* We allocate one ring per queue at run-time since we don't know the
|
|
* number of queues at compile-time. The polling_netdev array is
|
|
* intended for Multiqueue, but should work fine with a single queue.
|
|
**/
|
|
|
|
static int __devinit
|
|
e1000_alloc_queues(struct e1000_adapter *adapter)
|
|
{
|
|
adapter->tx_ring = kcalloc(adapter->num_tx_queues,
|
|
sizeof(struct e1000_tx_ring), GFP_KERNEL);
|
|
if (!adapter->tx_ring)
|
|
return -ENOMEM;
|
|
|
|
adapter->rx_ring = kcalloc(adapter->num_rx_queues,
|
|
sizeof(struct e1000_rx_ring), GFP_KERNEL);
|
|
if (!adapter->rx_ring) {
|
|
kfree(adapter->tx_ring);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
adapter->polling_netdev = kcalloc(adapter->num_rx_queues,
|
|
sizeof(struct net_device),
|
|
GFP_KERNEL);
|
|
if (!adapter->polling_netdev) {
|
|
kfree(adapter->tx_ring);
|
|
kfree(adapter->rx_ring);
|
|
return -ENOMEM;
|
|
}
|
|
#endif
|
|
|
|
return E1000_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* e1000_open - Called when a network interface is made active
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns 0 on success, negative value on failure
|
|
*
|
|
* The open entry point is called when a network interface is made
|
|
* active by the system (IFF_UP). At this point all resources needed
|
|
* for transmit and receive operations are allocated, the interrupt
|
|
* handler is registered with the OS, the watchdog timer is started,
|
|
* and the stack is notified that the interface is ready.
|
|
**/
|
|
|
|
static int
|
|
e1000_open(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
int err;
|
|
|
|
/* disallow open during test */
|
|
if (test_bit(__E1000_TESTING, &adapter->flags))
|
|
return -EBUSY;
|
|
|
|
/* allocate transmit descriptors */
|
|
err = e1000_setup_all_tx_resources(adapter);
|
|
if (err)
|
|
goto err_setup_tx;
|
|
|
|
/* allocate receive descriptors */
|
|
err = e1000_setup_all_rx_resources(adapter);
|
|
if (err)
|
|
goto err_setup_rx;
|
|
|
|
e1000_power_up_phy(adapter);
|
|
|
|
adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
|
|
if ((adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) {
|
|
e1000_update_mng_vlan(adapter);
|
|
}
|
|
|
|
/* If AMT is enabled, let the firmware know that the network
|
|
* interface is now open */
|
|
if (adapter->hw.mac_type == e1000_82573 &&
|
|
e1000_check_mng_mode(&adapter->hw))
|
|
e1000_get_hw_control(adapter);
|
|
|
|
/* before we allocate an interrupt, we must be ready to handle it.
|
|
* Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt
|
|
* as soon as we call pci_request_irq, so we have to setup our
|
|
* clean_rx handler before we do so. */
|
|
e1000_configure(adapter);
|
|
|
|
err = e1000_request_irq(adapter);
|
|
if (err)
|
|
goto err_req_irq;
|
|
|
|
/* From here on the code is the same as e1000_up() */
|
|
clear_bit(__E1000_DOWN, &adapter->flags);
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
napi_enable(&adapter->napi);
|
|
#endif
|
|
|
|
e1000_irq_enable(adapter);
|
|
|
|
/* fire a link status change interrupt to start the watchdog */
|
|
E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC);
|
|
|
|
return E1000_SUCCESS;
|
|
|
|
err_req_irq:
|
|
e1000_release_hw_control(adapter);
|
|
e1000_power_down_phy(adapter);
|
|
e1000_free_all_rx_resources(adapter);
|
|
err_setup_rx:
|
|
e1000_free_all_tx_resources(adapter);
|
|
err_setup_tx:
|
|
e1000_reset(adapter);
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* e1000_close - Disables a network interface
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns 0, this is not allowed to fail
|
|
*
|
|
* The close entry point is called when an interface is de-activated
|
|
* by the OS. The hardware is still under the drivers control, but
|
|
* needs to be disabled. A global MAC reset is issued to stop the
|
|
* hardware, and all transmit and receive resources are freed.
|
|
**/
|
|
|
|
static int
|
|
e1000_close(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
|
|
WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
|
|
e1000_down(adapter);
|
|
e1000_power_down_phy(adapter);
|
|
e1000_free_irq(adapter);
|
|
|
|
e1000_free_all_tx_resources(adapter);
|
|
e1000_free_all_rx_resources(adapter);
|
|
|
|
/* kill manageability vlan ID if supported, but not if a vlan with
|
|
* the same ID is registered on the host OS (let 8021q kill it) */
|
|
if ((adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
|
|
!(adapter->vlgrp &&
|
|
vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) {
|
|
e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id);
|
|
}
|
|
|
|
/* If AMT is enabled, let the firmware know that the network
|
|
* interface is now closed */
|
|
if (adapter->hw.mac_type == e1000_82573 &&
|
|
e1000_check_mng_mode(&adapter->hw))
|
|
e1000_release_hw_control(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_check_64k_bound - check that memory doesn't cross 64kB boundary
|
|
* @adapter: address of board private structure
|
|
* @start: address of beginning of memory
|
|
* @len: length of memory
|
|
**/
|
|
static bool
|
|
e1000_check_64k_bound(struct e1000_adapter *adapter,
|
|
void *start, unsigned long len)
|
|
{
|
|
unsigned long begin = (unsigned long) start;
|
|
unsigned long end = begin + len;
|
|
|
|
/* First rev 82545 and 82546 need to not allow any memory
|
|
* write location to cross 64k boundary due to errata 23 */
|
|
if (adapter->hw.mac_type == e1000_82545 ||
|
|
adapter->hw.mac_type == e1000_82546) {
|
|
return ((begin ^ (end - 1)) >> 16) != 0 ? false : true;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* e1000_setup_tx_resources - allocate Tx resources (Descriptors)
|
|
* @adapter: board private structure
|
|
* @txdr: tx descriptor ring (for a specific queue) to setup
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
|
|
static int
|
|
e1000_setup_tx_resources(struct e1000_adapter *adapter,
|
|
struct e1000_tx_ring *txdr)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
int size;
|
|
|
|
size = sizeof(struct e1000_buffer) * txdr->count;
|
|
txdr->buffer_info = vmalloc(size);
|
|
if (!txdr->buffer_info) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the transmit descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
memset(txdr->buffer_info, 0, size);
|
|
|
|
/* round up to nearest 4K */
|
|
|
|
txdr->size = txdr->count * sizeof(struct e1000_tx_desc);
|
|
txdr->size = ALIGN(txdr->size, 4096);
|
|
|
|
txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
|
|
if (!txdr->desc) {
|
|
setup_tx_desc_die:
|
|
vfree(txdr->buffer_info);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the transmit descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Fix for errata 23, can't cross 64kB boundary */
|
|
if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
|
|
void *olddesc = txdr->desc;
|
|
dma_addr_t olddma = txdr->dma;
|
|
DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes "
|
|
"at %p\n", txdr->size, txdr->desc);
|
|
/* Try again, without freeing the previous */
|
|
txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma);
|
|
/* Failed allocation, critical failure */
|
|
if (!txdr->desc) {
|
|
pci_free_consistent(pdev, txdr->size, olddesc, olddma);
|
|
goto setup_tx_desc_die;
|
|
}
|
|
|
|
if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) {
|
|
/* give up */
|
|
pci_free_consistent(pdev, txdr->size, txdr->desc,
|
|
txdr->dma);
|
|
pci_free_consistent(pdev, txdr->size, olddesc, olddma);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate aligned memory "
|
|
"for the transmit descriptor ring\n");
|
|
vfree(txdr->buffer_info);
|
|
return -ENOMEM;
|
|
} else {
|
|
/* Free old allocation, new allocation was successful */
|
|
pci_free_consistent(pdev, txdr->size, olddesc, olddma);
|
|
}
|
|
}
|
|
memset(txdr->desc, 0, txdr->size);
|
|
|
|
txdr->next_to_use = 0;
|
|
txdr->next_to_clean = 0;
|
|
spin_lock_init(&txdr->tx_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_setup_all_tx_resources - wrapper to allocate Tx resources
|
|
* (Descriptors) for all queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
|
|
int
|
|
e1000_setup_all_tx_resources(struct e1000_adapter *adapter)
|
|
{
|
|
int i, err = 0;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++) {
|
|
err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]);
|
|
if (err) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Allocation for Tx Queue %u failed\n", i);
|
|
for (i-- ; i >= 0; i--)
|
|
e1000_free_tx_resources(adapter,
|
|
&adapter->tx_ring[i]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
uint64_t tdba;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
uint32_t tdlen, tctl, tipg, tarc;
|
|
uint32_t ipgr1, ipgr2;
|
|
|
|
/* Setup the HW Tx Head and Tail descriptor pointers */
|
|
|
|
switch (adapter->num_tx_queues) {
|
|
case 1:
|
|
default:
|
|
tdba = adapter->tx_ring[0].dma;
|
|
tdlen = adapter->tx_ring[0].count *
|
|
sizeof(struct e1000_tx_desc);
|
|
E1000_WRITE_REG(hw, TDLEN, tdlen);
|
|
E1000_WRITE_REG(hw, TDBAH, (tdba >> 32));
|
|
E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
|
|
E1000_WRITE_REG(hw, TDT, 0);
|
|
E1000_WRITE_REG(hw, TDH, 0);
|
|
adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
|
|
adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
|
|
break;
|
|
}
|
|
|
|
/* Set the default values for the Tx Inter Packet Gap timer */
|
|
if (adapter->hw.mac_type <= e1000_82547_rev_2 &&
|
|
(hw->media_type == e1000_media_type_fiber ||
|
|
hw->media_type == e1000_media_type_internal_serdes))
|
|
tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
|
|
else
|
|
tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
|
|
|
|
switch (hw->mac_type) {
|
|
case e1000_82542_rev2_0:
|
|
case e1000_82542_rev2_1:
|
|
tipg = DEFAULT_82542_TIPG_IPGT;
|
|
ipgr1 = DEFAULT_82542_TIPG_IPGR1;
|
|
ipgr2 = DEFAULT_82542_TIPG_IPGR2;
|
|
break;
|
|
case e1000_80003es2lan:
|
|
ipgr1 = DEFAULT_82543_TIPG_IPGR1;
|
|
ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
|
|
break;
|
|
default:
|
|
ipgr1 = DEFAULT_82543_TIPG_IPGR1;
|
|
ipgr2 = DEFAULT_82543_TIPG_IPGR2;
|
|
break;
|
|
}
|
|
tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
|
|
tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
|
|
E1000_WRITE_REG(hw, TIPG, tipg);
|
|
|
|
/* Set the Tx Interrupt Delay register */
|
|
|
|
E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay);
|
|
if (hw->mac_type >= e1000_82540)
|
|
E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay);
|
|
|
|
/* Program the Transmit Control Register */
|
|
|
|
tctl = E1000_READ_REG(hw, TCTL);
|
|
tctl &= ~E1000_TCTL_CT;
|
|
tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC |
|
|
(E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
|
|
|
|
if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
|
|
tarc = E1000_READ_REG(hw, TARC0);
|
|
/* set the speed mode bit, we'll clear it if we're not at
|
|
* gigabit link later */
|
|
tarc |= (1 << 21);
|
|
E1000_WRITE_REG(hw, TARC0, tarc);
|
|
} else if (hw->mac_type == e1000_80003es2lan) {
|
|
tarc = E1000_READ_REG(hw, TARC0);
|
|
tarc |= 1;
|
|
E1000_WRITE_REG(hw, TARC0, tarc);
|
|
tarc = E1000_READ_REG(hw, TARC1);
|
|
tarc |= 1;
|
|
E1000_WRITE_REG(hw, TARC1, tarc);
|
|
}
|
|
|
|
e1000_config_collision_dist(hw);
|
|
|
|
/* Setup Transmit Descriptor Settings for eop descriptor */
|
|
adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
|
|
|
|
/* only set IDE if we are delaying interrupts using the timers */
|
|
if (adapter->tx_int_delay)
|
|
adapter->txd_cmd |= E1000_TXD_CMD_IDE;
|
|
|
|
if (hw->mac_type < e1000_82543)
|
|
adapter->txd_cmd |= E1000_TXD_CMD_RPS;
|
|
else
|
|
adapter->txd_cmd |= E1000_TXD_CMD_RS;
|
|
|
|
/* Cache if we're 82544 running in PCI-X because we'll
|
|
* need this to apply a workaround later in the send path. */
|
|
if (hw->mac_type == e1000_82544 &&
|
|
hw->bus_type == e1000_bus_type_pcix)
|
|
adapter->pcix_82544 = 1;
|
|
|
|
E1000_WRITE_REG(hw, TCTL, tctl);
|
|
|
|
}
|
|
|
|
/**
|
|
* e1000_setup_rx_resources - allocate Rx resources (Descriptors)
|
|
* @adapter: board private structure
|
|
* @rxdr: rx descriptor ring (for a specific queue) to setup
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
|
|
static int
|
|
e1000_setup_rx_resources(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rxdr)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
int size, desc_len;
|
|
|
|
size = sizeof(struct e1000_buffer) * rxdr->count;
|
|
rxdr->buffer_info = vmalloc(size);
|
|
if (!rxdr->buffer_info) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the receive descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
memset(rxdr->buffer_info, 0, size);
|
|
|
|
rxdr->ps_page = kcalloc(rxdr->count, sizeof(struct e1000_ps_page),
|
|
GFP_KERNEL);
|
|
if (!rxdr->ps_page) {
|
|
vfree(rxdr->buffer_info);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the receive descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
rxdr->ps_page_dma = kcalloc(rxdr->count,
|
|
sizeof(struct e1000_ps_page_dma),
|
|
GFP_KERNEL);
|
|
if (!rxdr->ps_page_dma) {
|
|
vfree(rxdr->buffer_info);
|
|
kfree(rxdr->ps_page);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the receive descriptor ring\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
if (adapter->hw.mac_type <= e1000_82547_rev_2)
|
|
desc_len = sizeof(struct e1000_rx_desc);
|
|
else
|
|
desc_len = sizeof(union e1000_rx_desc_packet_split);
|
|
|
|
/* Round up to nearest 4K */
|
|
|
|
rxdr->size = rxdr->count * desc_len;
|
|
rxdr->size = ALIGN(rxdr->size, 4096);
|
|
|
|
rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
|
|
|
|
if (!rxdr->desc) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory for the receive descriptor ring\n");
|
|
setup_rx_desc_die:
|
|
vfree(rxdr->buffer_info);
|
|
kfree(rxdr->ps_page);
|
|
kfree(rxdr->ps_page_dma);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Fix for errata 23, can't cross 64kB boundary */
|
|
if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
|
|
void *olddesc = rxdr->desc;
|
|
dma_addr_t olddma = rxdr->dma;
|
|
DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes "
|
|
"at %p\n", rxdr->size, rxdr->desc);
|
|
/* Try again, without freeing the previous */
|
|
rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma);
|
|
/* Failed allocation, critical failure */
|
|
if (!rxdr->desc) {
|
|
pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate memory "
|
|
"for the receive descriptor ring\n");
|
|
goto setup_rx_desc_die;
|
|
}
|
|
|
|
if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) {
|
|
/* give up */
|
|
pci_free_consistent(pdev, rxdr->size, rxdr->desc,
|
|
rxdr->dma);
|
|
pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
|
|
DPRINTK(PROBE, ERR,
|
|
"Unable to allocate aligned memory "
|
|
"for the receive descriptor ring\n");
|
|
goto setup_rx_desc_die;
|
|
} else {
|
|
/* Free old allocation, new allocation was successful */
|
|
pci_free_consistent(pdev, rxdr->size, olddesc, olddma);
|
|
}
|
|
}
|
|
memset(rxdr->desc, 0, rxdr->size);
|
|
|
|
rxdr->next_to_clean = 0;
|
|
rxdr->next_to_use = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_setup_all_rx_resources - wrapper to allocate Rx resources
|
|
* (Descriptors) for all queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Return 0 on success, negative on failure
|
|
**/
|
|
|
|
int
|
|
e1000_setup_all_rx_resources(struct e1000_adapter *adapter)
|
|
{
|
|
int i, err = 0;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++) {
|
|
err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]);
|
|
if (err) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Allocation for Rx Queue %u failed\n", i);
|
|
for (i-- ; i >= 0; i--)
|
|
e1000_free_rx_resources(adapter,
|
|
&adapter->rx_ring[i]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* e1000_setup_rctl - configure the receive control registers
|
|
* @adapter: Board private structure
|
|
**/
|
|
#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \
|
|
(((S) & (PAGE_SIZE - 1)) ? 1 : 0))
|
|
static void
|
|
e1000_setup_rctl(struct e1000_adapter *adapter)
|
|
{
|
|
uint32_t rctl, rfctl;
|
|
uint32_t psrctl = 0;
|
|
#ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
|
|
uint32_t pages = 0;
|
|
#endif
|
|
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
|
|
rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
|
|
|
|
rctl |= E1000_RCTL_EN | E1000_RCTL_BAM |
|
|
E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF |
|
|
(adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT);
|
|
|
|
if (adapter->hw.tbi_compatibility_on == 1)
|
|
rctl |= E1000_RCTL_SBP;
|
|
else
|
|
rctl &= ~E1000_RCTL_SBP;
|
|
|
|
if (adapter->netdev->mtu <= ETH_DATA_LEN)
|
|
rctl &= ~E1000_RCTL_LPE;
|
|
else
|
|
rctl |= E1000_RCTL_LPE;
|
|
|
|
/* Setup buffer sizes */
|
|
rctl &= ~E1000_RCTL_SZ_4096;
|
|
rctl |= E1000_RCTL_BSEX;
|
|
switch (adapter->rx_buffer_len) {
|
|
case E1000_RXBUFFER_256:
|
|
rctl |= E1000_RCTL_SZ_256;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case E1000_RXBUFFER_512:
|
|
rctl |= E1000_RCTL_SZ_512;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case E1000_RXBUFFER_1024:
|
|
rctl |= E1000_RCTL_SZ_1024;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case E1000_RXBUFFER_2048:
|
|
default:
|
|
rctl |= E1000_RCTL_SZ_2048;
|
|
rctl &= ~E1000_RCTL_BSEX;
|
|
break;
|
|
case E1000_RXBUFFER_4096:
|
|
rctl |= E1000_RCTL_SZ_4096;
|
|
break;
|
|
case E1000_RXBUFFER_8192:
|
|
rctl |= E1000_RCTL_SZ_8192;
|
|
break;
|
|
case E1000_RXBUFFER_16384:
|
|
rctl |= E1000_RCTL_SZ_16384;
|
|
break;
|
|
}
|
|
|
|
#ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
|
|
/* 82571 and greater support packet-split where the protocol
|
|
* header is placed in skb->data and the packet data is
|
|
* placed in pages hanging off of skb_shinfo(skb)->nr_frags.
|
|
* In the case of a non-split, skb->data is linearly filled,
|
|
* followed by the page buffers. Therefore, skb->data is
|
|
* sized to hold the largest protocol header.
|
|
*/
|
|
/* allocations using alloc_page take too long for regular MTU
|
|
* so only enable packet split for jumbo frames */
|
|
pages = PAGE_USE_COUNT(adapter->netdev->mtu);
|
|
if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) &&
|
|
PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE))
|
|
adapter->rx_ps_pages = pages;
|
|
else
|
|
adapter->rx_ps_pages = 0;
|
|
#endif
|
|
if (adapter->rx_ps_pages) {
|
|
/* Configure extra packet-split registers */
|
|
rfctl = E1000_READ_REG(&adapter->hw, RFCTL);
|
|
rfctl |= E1000_RFCTL_EXTEN;
|
|
/* disable packet split support for IPv6 extension headers,
|
|
* because some malformed IPv6 headers can hang the RX */
|
|
rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
|
|
E1000_RFCTL_NEW_IPV6_EXT_DIS);
|
|
|
|
E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl);
|
|
|
|
rctl |= E1000_RCTL_DTYP_PS;
|
|
|
|
psrctl |= adapter->rx_ps_bsize0 >>
|
|
E1000_PSRCTL_BSIZE0_SHIFT;
|
|
|
|
switch (adapter->rx_ps_pages) {
|
|
case 3:
|
|
psrctl |= PAGE_SIZE <<
|
|
E1000_PSRCTL_BSIZE3_SHIFT;
|
|
case 2:
|
|
psrctl |= PAGE_SIZE <<
|
|
E1000_PSRCTL_BSIZE2_SHIFT;
|
|
case 1:
|
|
psrctl |= PAGE_SIZE >>
|
|
E1000_PSRCTL_BSIZE1_SHIFT;
|
|
break;
|
|
}
|
|
|
|
E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl);
|
|
}
|
|
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
uint64_t rdba;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
uint32_t rdlen, rctl, rxcsum, ctrl_ext;
|
|
|
|
if (adapter->rx_ps_pages) {
|
|
/* this is a 32 byte descriptor */
|
|
rdlen = adapter->rx_ring[0].count *
|
|
sizeof(union e1000_rx_desc_packet_split);
|
|
adapter->clean_rx = e1000_clean_rx_irq_ps;
|
|
adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
|
|
} else {
|
|
rdlen = adapter->rx_ring[0].count *
|
|
sizeof(struct e1000_rx_desc);
|
|
adapter->clean_rx = e1000_clean_rx_irq;
|
|
adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
|
|
}
|
|
|
|
/* disable receives while setting up the descriptors */
|
|
rctl = E1000_READ_REG(hw, RCTL);
|
|
E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
|
|
|
|
/* set the Receive Delay Timer Register */
|
|
E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay);
|
|
|
|
if (hw->mac_type >= e1000_82540) {
|
|
E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay);
|
|
if (adapter->itr_setting != 0)
|
|
E1000_WRITE_REG(hw, ITR,
|
|
1000000000 / (adapter->itr * 256));
|
|
}
|
|
|
|
if (hw->mac_type >= e1000_82571) {
|
|
ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
|
|
/* Reset delay timers after every interrupt */
|
|
ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
|
|
#ifdef CONFIG_E1000_NAPI
|
|
/* Auto-Mask interrupts upon ICR access */
|
|
ctrl_ext |= E1000_CTRL_EXT_IAME;
|
|
E1000_WRITE_REG(hw, IAM, 0xffffffff);
|
|
#endif
|
|
E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
|
|
E1000_WRITE_FLUSH(hw);
|
|
}
|
|
|
|
/* Setup the HW Rx Head and Tail Descriptor Pointers and
|
|
* the Base and Length of the Rx Descriptor Ring */
|
|
switch (adapter->num_rx_queues) {
|
|
case 1:
|
|
default:
|
|
rdba = adapter->rx_ring[0].dma;
|
|
E1000_WRITE_REG(hw, RDLEN, rdlen);
|
|
E1000_WRITE_REG(hw, RDBAH, (rdba >> 32));
|
|
E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL));
|
|
E1000_WRITE_REG(hw, RDT, 0);
|
|
E1000_WRITE_REG(hw, RDH, 0);
|
|
adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
|
|
adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
|
|
break;
|
|
}
|
|
|
|
/* Enable 82543 Receive Checksum Offload for TCP and UDP */
|
|
if (hw->mac_type >= e1000_82543) {
|
|
rxcsum = E1000_READ_REG(hw, RXCSUM);
|
|
if (adapter->rx_csum) {
|
|
rxcsum |= E1000_RXCSUM_TUOFL;
|
|
|
|
/* Enable 82571 IPv4 payload checksum for UDP fragments
|
|
* Must be used in conjunction with packet-split. */
|
|
if ((hw->mac_type >= e1000_82571) &&
|
|
(adapter->rx_ps_pages)) {
|
|
rxcsum |= E1000_RXCSUM_IPPCSE;
|
|
}
|
|
} else {
|
|
rxcsum &= ~E1000_RXCSUM_TUOFL;
|
|
/* don't need to clear IPPCSE as it defaults to 0 */
|
|
}
|
|
E1000_WRITE_REG(hw, RXCSUM, rxcsum);
|
|
}
|
|
|
|
/* enable early receives on 82573, only takes effect if using > 2048
|
|
* byte total frame size. for example only for jumbo frames */
|
|
#define E1000_ERT_2048 0x100
|
|
if (hw->mac_type == e1000_82573)
|
|
E1000_WRITE_REG(hw, ERT, E1000_ERT_2048);
|
|
|
|
/* Enable Receives */
|
|
E1000_WRITE_REG(hw, RCTL, rctl);
|
|
}
|
|
|
|
/**
|
|
* e1000_free_tx_resources - Free Tx Resources per Queue
|
|
* @adapter: board private structure
|
|
* @tx_ring: Tx descriptor ring for a specific queue
|
|
*
|
|
* Free all transmit software resources
|
|
**/
|
|
|
|
static void
|
|
e1000_free_tx_resources(struct e1000_adapter *adapter,
|
|
struct e1000_tx_ring *tx_ring)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
e1000_clean_tx_ring(adapter, tx_ring);
|
|
|
|
vfree(tx_ring->buffer_info);
|
|
tx_ring->buffer_info = NULL;
|
|
|
|
pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma);
|
|
|
|
tx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* e1000_free_all_tx_resources - Free Tx Resources for All Queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Free all transmit software resources
|
|
**/
|
|
|
|
void
|
|
e1000_free_all_tx_resources(struct e1000_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
e1000_free_tx_resources(adapter, &adapter->tx_ring[i]);
|
|
}
|
|
|
|
static void
|
|
e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter,
|
|
struct e1000_buffer *buffer_info)
|
|
{
|
|
if (buffer_info->dma) {
|
|
pci_unmap_page(adapter->pdev,
|
|
buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_TODEVICE);
|
|
buffer_info->dma = 0;
|
|
}
|
|
if (buffer_info->skb) {
|
|
dev_kfree_skb_any(buffer_info->skb);
|
|
buffer_info->skb = NULL;
|
|
}
|
|
/* buffer_info must be completely set up in the transmit path */
|
|
}
|
|
|
|
/**
|
|
* e1000_clean_tx_ring - Free Tx Buffers
|
|
* @adapter: board private structure
|
|
* @tx_ring: ring to be cleaned
|
|
**/
|
|
|
|
static void
|
|
e1000_clean_tx_ring(struct e1000_adapter *adapter,
|
|
struct e1000_tx_ring *tx_ring)
|
|
{
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned long size;
|
|
unsigned int i;
|
|
|
|
/* Free all the Tx ring sk_buffs */
|
|
|
|
for (i = 0; i < tx_ring->count; i++) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
e1000_unmap_and_free_tx_resource(adapter, buffer_info);
|
|
}
|
|
|
|
size = sizeof(struct e1000_buffer) * tx_ring->count;
|
|
memset(tx_ring->buffer_info, 0, size);
|
|
|
|
/* Zero out the descriptor ring */
|
|
|
|
memset(tx_ring->desc, 0, tx_ring->size);
|
|
|
|
tx_ring->next_to_use = 0;
|
|
tx_ring->next_to_clean = 0;
|
|
tx_ring->last_tx_tso = 0;
|
|
|
|
writel(0, adapter->hw.hw_addr + tx_ring->tdh);
|
|
writel(0, adapter->hw.hw_addr + tx_ring->tdt);
|
|
}
|
|
|
|
/**
|
|
* e1000_clean_all_tx_rings - Free Tx Buffers for all queues
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static void
|
|
e1000_clean_all_tx_rings(struct e1000_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_tx_queues; i++)
|
|
e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]);
|
|
}
|
|
|
|
/**
|
|
* e1000_free_rx_resources - Free Rx Resources
|
|
* @adapter: board private structure
|
|
* @rx_ring: ring to clean the resources from
|
|
*
|
|
* Free all receive software resources
|
|
**/
|
|
|
|
static void
|
|
e1000_free_rx_resources(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rx_ring)
|
|
{
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
|
|
e1000_clean_rx_ring(adapter, rx_ring);
|
|
|
|
vfree(rx_ring->buffer_info);
|
|
rx_ring->buffer_info = NULL;
|
|
kfree(rx_ring->ps_page);
|
|
rx_ring->ps_page = NULL;
|
|
kfree(rx_ring->ps_page_dma);
|
|
rx_ring->ps_page_dma = NULL;
|
|
|
|
pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma);
|
|
|
|
rx_ring->desc = NULL;
|
|
}
|
|
|
|
/**
|
|
* e1000_free_all_rx_resources - Free Rx Resources for All Queues
|
|
* @adapter: board private structure
|
|
*
|
|
* Free all receive software resources
|
|
**/
|
|
|
|
void
|
|
e1000_free_all_rx_resources(struct e1000_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
e1000_free_rx_resources(adapter, &adapter->rx_ring[i]);
|
|
}
|
|
|
|
/**
|
|
* e1000_clean_rx_ring - Free Rx Buffers per Queue
|
|
* @adapter: board private structure
|
|
* @rx_ring: ring to free buffers from
|
|
**/
|
|
|
|
static void
|
|
e1000_clean_rx_ring(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rx_ring)
|
|
{
|
|
struct e1000_buffer *buffer_info;
|
|
struct e1000_ps_page *ps_page;
|
|
struct e1000_ps_page_dma *ps_page_dma;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
unsigned long size;
|
|
unsigned int i, j;
|
|
|
|
/* Free all the Rx ring sk_buffs */
|
|
for (i = 0; i < rx_ring->count; i++) {
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
if (buffer_info->skb) {
|
|
pci_unmap_single(pdev,
|
|
buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
dev_kfree_skb(buffer_info->skb);
|
|
buffer_info->skb = NULL;
|
|
}
|
|
ps_page = &rx_ring->ps_page[i];
|
|
ps_page_dma = &rx_ring->ps_page_dma[i];
|
|
for (j = 0; j < adapter->rx_ps_pages; j++) {
|
|
if (!ps_page->ps_page[j]) break;
|
|
pci_unmap_page(pdev,
|
|
ps_page_dma->ps_page_dma[j],
|
|
PAGE_SIZE, PCI_DMA_FROMDEVICE);
|
|
ps_page_dma->ps_page_dma[j] = 0;
|
|
put_page(ps_page->ps_page[j]);
|
|
ps_page->ps_page[j] = NULL;
|
|
}
|
|
}
|
|
|
|
size = sizeof(struct e1000_buffer) * rx_ring->count;
|
|
memset(rx_ring->buffer_info, 0, size);
|
|
size = sizeof(struct e1000_ps_page) * rx_ring->count;
|
|
memset(rx_ring->ps_page, 0, size);
|
|
size = sizeof(struct e1000_ps_page_dma) * rx_ring->count;
|
|
memset(rx_ring->ps_page_dma, 0, size);
|
|
|
|
/* Zero out the descriptor ring */
|
|
|
|
memset(rx_ring->desc, 0, rx_ring->size);
|
|
|
|
rx_ring->next_to_clean = 0;
|
|
rx_ring->next_to_use = 0;
|
|
|
|
writel(0, adapter->hw.hw_addr + rx_ring->rdh);
|
|
writel(0, adapter->hw.hw_addr + rx_ring->rdt);
|
|
}
|
|
|
|
/**
|
|
* e1000_clean_all_rx_rings - Free Rx Buffers for all queues
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static void
|
|
e1000_clean_all_rx_rings(struct e1000_adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < adapter->num_rx_queues; i++)
|
|
e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]);
|
|
}
|
|
|
|
/* The 82542 2.0 (revision 2) needs to have the receive unit in reset
|
|
* and memory write and invalidate disabled for certain operations
|
|
*/
|
|
static void
|
|
e1000_enter_82542_rst(struct e1000_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
uint32_t rctl;
|
|
|
|
e1000_pci_clear_mwi(&adapter->hw);
|
|
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl |= E1000_RCTL_RST;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
E1000_WRITE_FLUSH(&adapter->hw);
|
|
mdelay(5);
|
|
|
|
if (netif_running(netdev))
|
|
e1000_clean_all_rx_rings(adapter);
|
|
}
|
|
|
|
static void
|
|
e1000_leave_82542_rst(struct e1000_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
uint32_t rctl;
|
|
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl &= ~E1000_RCTL_RST;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
E1000_WRITE_FLUSH(&adapter->hw);
|
|
mdelay(5);
|
|
|
|
if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE)
|
|
e1000_pci_set_mwi(&adapter->hw);
|
|
|
|
if (netif_running(netdev)) {
|
|
/* No need to loop, because 82542 supports only 1 queue */
|
|
struct e1000_rx_ring *ring = &adapter->rx_ring[0];
|
|
e1000_configure_rx(adapter);
|
|
adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* e1000_set_mac - Change the Ethernet Address of the NIC
|
|
* @netdev: network interface device structure
|
|
* @p: pointer to an address structure
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
|
|
static int
|
|
e1000_set_mac(struct net_device *netdev, void *p)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct sockaddr *addr = p;
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
/* 82542 2.0 needs to be in reset to write receive address registers */
|
|
|
|
if (adapter->hw.mac_type == e1000_82542_rev2_0)
|
|
e1000_enter_82542_rst(adapter);
|
|
|
|
memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
|
|
memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
|
|
|
|
e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
|
|
|
|
/* With 82571 controllers, LAA may be overwritten (with the default)
|
|
* due to controller reset from the other port. */
|
|
if (adapter->hw.mac_type == e1000_82571) {
|
|
/* activate the work around */
|
|
adapter->hw.laa_is_present = 1;
|
|
|
|
/* Hold a copy of the LAA in RAR[14] This is done so that
|
|
* between the time RAR[0] gets clobbered and the time it
|
|
* gets fixed (in e1000_watchdog), the actual LAA is in one
|
|
* of the RARs and no incoming packets directed to this port
|
|
* are dropped. Eventaully the LAA will be in RAR[0] and
|
|
* RAR[14] */
|
|
e1000_rar_set(&adapter->hw, adapter->hw.mac_addr,
|
|
E1000_RAR_ENTRIES - 1);
|
|
}
|
|
|
|
if (adapter->hw.mac_type == e1000_82542_rev2_0)
|
|
e1000_leave_82542_rst(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set
|
|
* @netdev: network interface device structure
|
|
*
|
|
* The set_rx_mode entry point is called whenever the unicast or multicast
|
|
* address lists or the network interface flags are updated. This routine is
|
|
* responsible for configuring the hardware for proper unicast, multicast,
|
|
* promiscuous mode, and all-multi behavior.
|
|
**/
|
|
|
|
static void
|
|
e1000_set_rx_mode(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct dev_addr_list *uc_ptr;
|
|
struct dev_addr_list *mc_ptr;
|
|
uint32_t rctl;
|
|
uint32_t hash_value;
|
|
int i, rar_entries = E1000_RAR_ENTRIES;
|
|
int mta_reg_count = (hw->mac_type == e1000_ich8lan) ?
|
|
E1000_NUM_MTA_REGISTERS_ICH8LAN :
|
|
E1000_NUM_MTA_REGISTERS;
|
|
|
|
if (adapter->hw.mac_type == e1000_ich8lan)
|
|
rar_entries = E1000_RAR_ENTRIES_ICH8LAN;
|
|
|
|
/* reserve RAR[14] for LAA over-write work-around */
|
|
if (adapter->hw.mac_type == e1000_82571)
|
|
rar_entries--;
|
|
|
|
/* Check for Promiscuous and All Multicast modes */
|
|
|
|
rctl = E1000_READ_REG(hw, RCTL);
|
|
|
|
if (netdev->flags & IFF_PROMISC) {
|
|
rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
|
|
} else if (netdev->flags & IFF_ALLMULTI) {
|
|
rctl |= E1000_RCTL_MPE;
|
|
} else {
|
|
rctl &= ~E1000_RCTL_MPE;
|
|
}
|
|
|
|
uc_ptr = NULL;
|
|
if (netdev->uc_count > rar_entries - 1) {
|
|
rctl |= E1000_RCTL_UPE;
|
|
} else if (!(netdev->flags & IFF_PROMISC)) {
|
|
rctl &= ~E1000_RCTL_UPE;
|
|
uc_ptr = netdev->uc_list;
|
|
}
|
|
|
|
E1000_WRITE_REG(hw, RCTL, rctl);
|
|
|
|
/* 82542 2.0 needs to be in reset to write receive address registers */
|
|
|
|
if (hw->mac_type == e1000_82542_rev2_0)
|
|
e1000_enter_82542_rst(adapter);
|
|
|
|
/* load the first 14 addresses into the exact filters 1-14. Unicast
|
|
* addresses take precedence to avoid disabling unicast filtering
|
|
* when possible.
|
|
*
|
|
* RAR 0 is used for the station MAC adddress
|
|
* if there are not 14 addresses, go ahead and clear the filters
|
|
* -- with 82571 controllers only 0-13 entries are filled here
|
|
*/
|
|
mc_ptr = netdev->mc_list;
|
|
|
|
for (i = 1; i < rar_entries; i++) {
|
|
if (uc_ptr) {
|
|
e1000_rar_set(hw, uc_ptr->da_addr, i);
|
|
uc_ptr = uc_ptr->next;
|
|
} else if (mc_ptr) {
|
|
e1000_rar_set(hw, mc_ptr->da_addr, i);
|
|
mc_ptr = mc_ptr->next;
|
|
} else {
|
|
E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0);
|
|
E1000_WRITE_FLUSH(hw);
|
|
E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0);
|
|
E1000_WRITE_FLUSH(hw);
|
|
}
|
|
}
|
|
WARN_ON(uc_ptr != NULL);
|
|
|
|
/* clear the old settings from the multicast hash table */
|
|
|
|
for (i = 0; i < mta_reg_count; i++) {
|
|
E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
|
|
E1000_WRITE_FLUSH(hw);
|
|
}
|
|
|
|
/* load any remaining addresses into the hash table */
|
|
|
|
for (; mc_ptr; mc_ptr = mc_ptr->next) {
|
|
hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr);
|
|
e1000_mta_set(hw, hash_value);
|
|
}
|
|
|
|
if (hw->mac_type == e1000_82542_rev2_0)
|
|
e1000_leave_82542_rst(adapter);
|
|
}
|
|
|
|
/* Need to wait a few seconds after link up to get diagnostic information from
|
|
* the phy */
|
|
|
|
static void
|
|
e1000_update_phy_info(unsigned long data)
|
|
{
|
|
struct e1000_adapter *adapter = (struct e1000_adapter *) data;
|
|
e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
|
|
}
|
|
|
|
/**
|
|
* e1000_82547_tx_fifo_stall - Timer Call-back
|
|
* @data: pointer to adapter cast into an unsigned long
|
|
**/
|
|
|
|
static void
|
|
e1000_82547_tx_fifo_stall(unsigned long data)
|
|
{
|
|
struct e1000_adapter *adapter = (struct e1000_adapter *) data;
|
|
struct net_device *netdev = adapter->netdev;
|
|
uint32_t tctl;
|
|
|
|
if (atomic_read(&adapter->tx_fifo_stall)) {
|
|
if ((E1000_READ_REG(&adapter->hw, TDT) ==
|
|
E1000_READ_REG(&adapter->hw, TDH)) &&
|
|
(E1000_READ_REG(&adapter->hw, TDFT) ==
|
|
E1000_READ_REG(&adapter->hw, TDFH)) &&
|
|
(E1000_READ_REG(&adapter->hw, TDFTS) ==
|
|
E1000_READ_REG(&adapter->hw, TDFHS))) {
|
|
tctl = E1000_READ_REG(&adapter->hw, TCTL);
|
|
E1000_WRITE_REG(&adapter->hw, TCTL,
|
|
tctl & ~E1000_TCTL_EN);
|
|
E1000_WRITE_REG(&adapter->hw, TDFT,
|
|
adapter->tx_head_addr);
|
|
E1000_WRITE_REG(&adapter->hw, TDFH,
|
|
adapter->tx_head_addr);
|
|
E1000_WRITE_REG(&adapter->hw, TDFTS,
|
|
adapter->tx_head_addr);
|
|
E1000_WRITE_REG(&adapter->hw, TDFHS,
|
|
adapter->tx_head_addr);
|
|
E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
|
|
E1000_WRITE_FLUSH(&adapter->hw);
|
|
|
|
adapter->tx_fifo_head = 0;
|
|
atomic_set(&adapter->tx_fifo_stall, 0);
|
|
netif_wake_queue(netdev);
|
|
} else {
|
|
mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* e1000_watchdog - Timer Call-back
|
|
* @data: pointer to adapter cast into an unsigned long
|
|
**/
|
|
static void
|
|
e1000_watchdog(unsigned long data)
|
|
{
|
|
struct e1000_adapter *adapter = (struct e1000_adapter *) data;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_tx_ring *txdr = adapter->tx_ring;
|
|
uint32_t link, tctl;
|
|
int32_t ret_val;
|
|
|
|
ret_val = e1000_check_for_link(&adapter->hw);
|
|
if ((ret_val == E1000_ERR_PHY) &&
|
|
(adapter->hw.phy_type == e1000_phy_igp_3) &&
|
|
(E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
|
|
/* See e1000_kumeran_lock_loss_workaround() */
|
|
DPRINTK(LINK, INFO,
|
|
"Gigabit has been disabled, downgrading speed\n");
|
|
}
|
|
|
|
if (adapter->hw.mac_type == e1000_82573) {
|
|
e1000_enable_tx_pkt_filtering(&adapter->hw);
|
|
if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)
|
|
e1000_update_mng_vlan(adapter);
|
|
}
|
|
|
|
if ((adapter->hw.media_type == e1000_media_type_internal_serdes) &&
|
|
!(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE))
|
|
link = !adapter->hw.serdes_link_down;
|
|
else
|
|
link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU;
|
|
|
|
if (link) {
|
|
if (!netif_carrier_ok(netdev)) {
|
|
uint32_t ctrl;
|
|
bool txb2b = true;
|
|
e1000_get_speed_and_duplex(&adapter->hw,
|
|
&adapter->link_speed,
|
|
&adapter->link_duplex);
|
|
|
|
ctrl = E1000_READ_REG(&adapter->hw, CTRL);
|
|
DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, "
|
|
"Flow Control: %s\n",
|
|
adapter->link_speed,
|
|
adapter->link_duplex == FULL_DUPLEX ?
|
|
"Full Duplex" : "Half Duplex",
|
|
((ctrl & E1000_CTRL_TFCE) && (ctrl &
|
|
E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl &
|
|
E1000_CTRL_RFCE) ? "RX" : ((ctrl &
|
|
E1000_CTRL_TFCE) ? "TX" : "None" )));
|
|
|
|
/* tweak tx_queue_len according to speed/duplex
|
|
* and adjust the timeout factor */
|
|
netdev->tx_queue_len = adapter->tx_queue_len;
|
|
adapter->tx_timeout_factor = 1;
|
|
switch (adapter->link_speed) {
|
|
case SPEED_10:
|
|
txb2b = false;
|
|
netdev->tx_queue_len = 10;
|
|
adapter->tx_timeout_factor = 8;
|
|
break;
|
|
case SPEED_100:
|
|
txb2b = false;
|
|
netdev->tx_queue_len = 100;
|
|
/* maybe add some timeout factor ? */
|
|
break;
|
|
}
|
|
|
|
if ((adapter->hw.mac_type == e1000_82571 ||
|
|
adapter->hw.mac_type == e1000_82572) &&
|
|
!txb2b) {
|
|
uint32_t tarc0;
|
|
tarc0 = E1000_READ_REG(&adapter->hw, TARC0);
|
|
tarc0 &= ~(1 << 21);
|
|
E1000_WRITE_REG(&adapter->hw, TARC0, tarc0);
|
|
}
|
|
|
|
/* disable TSO for pcie and 10/100 speeds, to avoid
|
|
* some hardware issues */
|
|
if (!adapter->tso_force &&
|
|
adapter->hw.bus_type == e1000_bus_type_pci_express){
|
|
switch (adapter->link_speed) {
|
|
case SPEED_10:
|
|
case SPEED_100:
|
|
DPRINTK(PROBE,INFO,
|
|
"10/100 speed: disabling TSO\n");
|
|
netdev->features &= ~NETIF_F_TSO;
|
|
netdev->features &= ~NETIF_F_TSO6;
|
|
break;
|
|
case SPEED_1000:
|
|
netdev->features |= NETIF_F_TSO;
|
|
netdev->features |= NETIF_F_TSO6;
|
|
break;
|
|
default:
|
|
/* oops */
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* enable transmits in the hardware, need to do this
|
|
* after setting TARC0 */
|
|
tctl = E1000_READ_REG(&adapter->hw, TCTL);
|
|
tctl |= E1000_TCTL_EN;
|
|
E1000_WRITE_REG(&adapter->hw, TCTL, tctl);
|
|
|
|
netif_carrier_on(netdev);
|
|
netif_wake_queue(netdev);
|
|
mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
|
|
adapter->smartspeed = 0;
|
|
} else {
|
|
/* make sure the receive unit is started */
|
|
if (adapter->hw.rx_needs_kicking) {
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
uint32_t rctl = E1000_READ_REG(hw, RCTL);
|
|
E1000_WRITE_REG(hw, RCTL, rctl | E1000_RCTL_EN);
|
|
}
|
|
}
|
|
} else {
|
|
if (netif_carrier_ok(netdev)) {
|
|
adapter->link_speed = 0;
|
|
adapter->link_duplex = 0;
|
|
DPRINTK(LINK, INFO, "NIC Link is Down\n");
|
|
netif_carrier_off(netdev);
|
|
netif_stop_queue(netdev);
|
|
mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ));
|
|
|
|
/* 80003ES2LAN workaround--
|
|
* For packet buffer work-around on link down event;
|
|
* disable receives in the ISR and
|
|
* reset device here in the watchdog
|
|
*/
|
|
if (adapter->hw.mac_type == e1000_80003es2lan)
|
|
/* reset device */
|
|
schedule_work(&adapter->reset_task);
|
|
}
|
|
|
|
e1000_smartspeed(adapter);
|
|
}
|
|
|
|
e1000_update_stats(adapter);
|
|
|
|
adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old;
|
|
adapter->tpt_old = adapter->stats.tpt;
|
|
adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old;
|
|
adapter->colc_old = adapter->stats.colc;
|
|
|
|
adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old;
|
|
adapter->gorcl_old = adapter->stats.gorcl;
|
|
adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old;
|
|
adapter->gotcl_old = adapter->stats.gotcl;
|
|
|
|
e1000_update_adaptive(&adapter->hw);
|
|
|
|
if (!netif_carrier_ok(netdev)) {
|
|
if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) {
|
|
/* We've lost link, so the controller stops DMA,
|
|
* but we've got queued Tx work that's never going
|
|
* to get done, so reset controller to flush Tx.
|
|
* (Do the reset outside of interrupt context). */
|
|
adapter->tx_timeout_count++;
|
|
schedule_work(&adapter->reset_task);
|
|
}
|
|
}
|
|
|
|
/* Cause software interrupt to ensure rx ring is cleaned */
|
|
E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0);
|
|
|
|
/* Force detection of hung controller every watchdog period */
|
|
adapter->detect_tx_hung = true;
|
|
|
|
/* With 82571 controllers, LAA may be overwritten due to controller
|
|
* reset from the other port. Set the appropriate LAA in RAR[0] */
|
|
if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present)
|
|
e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0);
|
|
|
|
/* Reset the timer */
|
|
mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ));
|
|
}
|
|
|
|
enum latency_range {
|
|
lowest_latency = 0,
|
|
low_latency = 1,
|
|
bulk_latency = 2,
|
|
latency_invalid = 255
|
|
};
|
|
|
|
/**
|
|
* e1000_update_itr - update the dynamic ITR value based on statistics
|
|
* Stores a new ITR value based on packets and byte
|
|
* counts during the last interrupt. The advantage of per interrupt
|
|
* computation is faster updates and more accurate ITR for the current
|
|
* traffic pattern. Constants in this function were computed
|
|
* based on theoretical maximum wire speed and thresholds were set based
|
|
* on testing data as well as attempting to minimize response time
|
|
* while increasing bulk throughput.
|
|
* this functionality is controlled by the InterruptThrottleRate module
|
|
* parameter (see e1000_param.c)
|
|
* @adapter: pointer to adapter
|
|
* @itr_setting: current adapter->itr
|
|
* @packets: the number of packets during this measurement interval
|
|
* @bytes: the number of bytes during this measurement interval
|
|
**/
|
|
static unsigned int e1000_update_itr(struct e1000_adapter *adapter,
|
|
uint16_t itr_setting,
|
|
int packets,
|
|
int bytes)
|
|
{
|
|
unsigned int retval = itr_setting;
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
|
|
if (unlikely(hw->mac_type < e1000_82540))
|
|
goto update_itr_done;
|
|
|
|
if (packets == 0)
|
|
goto update_itr_done;
|
|
|
|
switch (itr_setting) {
|
|
case lowest_latency:
|
|
/* jumbo frames get bulk treatment*/
|
|
if (bytes/packets > 8000)
|
|
retval = bulk_latency;
|
|
else if ((packets < 5) && (bytes > 512))
|
|
retval = low_latency;
|
|
break;
|
|
case low_latency: /* 50 usec aka 20000 ints/s */
|
|
if (bytes > 10000) {
|
|
/* jumbo frames need bulk latency setting */
|
|
if (bytes/packets > 8000)
|
|
retval = bulk_latency;
|
|
else if ((packets < 10) || ((bytes/packets) > 1200))
|
|
retval = bulk_latency;
|
|
else if ((packets > 35))
|
|
retval = lowest_latency;
|
|
} else if (bytes/packets > 2000)
|
|
retval = bulk_latency;
|
|
else if (packets <= 2 && bytes < 512)
|
|
retval = lowest_latency;
|
|
break;
|
|
case bulk_latency: /* 250 usec aka 4000 ints/s */
|
|
if (bytes > 25000) {
|
|
if (packets > 35)
|
|
retval = low_latency;
|
|
} else if (bytes < 6000) {
|
|
retval = low_latency;
|
|
}
|
|
break;
|
|
}
|
|
|
|
update_itr_done:
|
|
return retval;
|
|
}
|
|
|
|
static void e1000_set_itr(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
uint16_t current_itr;
|
|
uint32_t new_itr = adapter->itr;
|
|
|
|
if (unlikely(hw->mac_type < e1000_82540))
|
|
return;
|
|
|
|
/* for non-gigabit speeds, just fix the interrupt rate at 4000 */
|
|
if (unlikely(adapter->link_speed != SPEED_1000)) {
|
|
current_itr = 0;
|
|
new_itr = 4000;
|
|
goto set_itr_now;
|
|
}
|
|
|
|
adapter->tx_itr = e1000_update_itr(adapter,
|
|
adapter->tx_itr,
|
|
adapter->total_tx_packets,
|
|
adapter->total_tx_bytes);
|
|
/* conservative mode (itr 3) eliminates the lowest_latency setting */
|
|
if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency)
|
|
adapter->tx_itr = low_latency;
|
|
|
|
adapter->rx_itr = e1000_update_itr(adapter,
|
|
adapter->rx_itr,
|
|
adapter->total_rx_packets,
|
|
adapter->total_rx_bytes);
|
|
/* conservative mode (itr 3) eliminates the lowest_latency setting */
|
|
if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency)
|
|
adapter->rx_itr = low_latency;
|
|
|
|
current_itr = max(adapter->rx_itr, adapter->tx_itr);
|
|
|
|
switch (current_itr) {
|
|
/* counts and packets in update_itr are dependent on these numbers */
|
|
case lowest_latency:
|
|
new_itr = 70000;
|
|
break;
|
|
case low_latency:
|
|
new_itr = 20000; /* aka hwitr = ~200 */
|
|
break;
|
|
case bulk_latency:
|
|
new_itr = 4000;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
set_itr_now:
|
|
if (new_itr != adapter->itr) {
|
|
/* this attempts to bias the interrupt rate towards Bulk
|
|
* by adding intermediate steps when interrupt rate is
|
|
* increasing */
|
|
new_itr = new_itr > adapter->itr ?
|
|
min(adapter->itr + (new_itr >> 2), new_itr) :
|
|
new_itr;
|
|
adapter->itr = new_itr;
|
|
E1000_WRITE_REG(hw, ITR, 1000000000 / (new_itr * 256));
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
#define E1000_TX_FLAGS_CSUM 0x00000001
|
|
#define E1000_TX_FLAGS_VLAN 0x00000002
|
|
#define E1000_TX_FLAGS_TSO 0x00000004
|
|
#define E1000_TX_FLAGS_IPV4 0x00000008
|
|
#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000
|
|
#define E1000_TX_FLAGS_VLAN_SHIFT 16
|
|
|
|
static int
|
|
e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct e1000_context_desc *context_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned int i;
|
|
uint32_t cmd_length = 0;
|
|
uint16_t ipcse = 0, tucse, mss;
|
|
uint8_t ipcss, ipcso, tucss, tucso, hdr_len;
|
|
int err;
|
|
|
|
if (skb_is_gso(skb)) {
|
|
if (skb_header_cloned(skb)) {
|
|
err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
|
|
mss = skb_shinfo(skb)->gso_size;
|
|
if (skb->protocol == htons(ETH_P_IP)) {
|
|
struct iphdr *iph = ip_hdr(skb);
|
|
iph->tot_len = 0;
|
|
iph->check = 0;
|
|
tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
|
|
iph->daddr, 0,
|
|
IPPROTO_TCP,
|
|
0);
|
|
cmd_length = E1000_TXD_CMD_IP;
|
|
ipcse = skb_transport_offset(skb) - 1;
|
|
} else if (skb->protocol == htons(ETH_P_IPV6)) {
|
|
ipv6_hdr(skb)->payload_len = 0;
|
|
tcp_hdr(skb)->check =
|
|
~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
|
|
&ipv6_hdr(skb)->daddr,
|
|
0, IPPROTO_TCP, 0);
|
|
ipcse = 0;
|
|
}
|
|
ipcss = skb_network_offset(skb);
|
|
ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data;
|
|
tucss = skb_transport_offset(skb);
|
|
tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data;
|
|
tucse = 0;
|
|
|
|
cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE |
|
|
E1000_TXD_CMD_TCP | (skb->len - (hdr_len)));
|
|
|
|
i = tx_ring->next_to_use;
|
|
context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
|
|
context_desc->lower_setup.ip_fields.ipcss = ipcss;
|
|
context_desc->lower_setup.ip_fields.ipcso = ipcso;
|
|
context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse);
|
|
context_desc->upper_setup.tcp_fields.tucss = tucss;
|
|
context_desc->upper_setup.tcp_fields.tucso = tucso;
|
|
context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse);
|
|
context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss);
|
|
context_desc->tcp_seg_setup.fields.hdr_len = hdr_len;
|
|
context_desc->cmd_and_length = cpu_to_le32(cmd_length);
|
|
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->next_to_watch = i;
|
|
|
|
if (++i == tx_ring->count) i = 0;
|
|
tx_ring->next_to_use = i;
|
|
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct e1000_context_desc *context_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned int i;
|
|
uint8_t css;
|
|
|
|
if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
|
|
css = skb_transport_offset(skb);
|
|
|
|
i = tx_ring->next_to_use;
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
context_desc = E1000_CONTEXT_DESC(*tx_ring, i);
|
|
|
|
context_desc->lower_setup.ip_config = 0;
|
|
context_desc->upper_setup.tcp_fields.tucss = css;
|
|
context_desc->upper_setup.tcp_fields.tucso =
|
|
css + skb->csum_offset;
|
|
context_desc->upper_setup.tcp_fields.tucse = 0;
|
|
context_desc->tcp_seg_setup.data = 0;
|
|
context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT);
|
|
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->next_to_watch = i;
|
|
|
|
if (unlikely(++i == tx_ring->count)) i = 0;
|
|
tx_ring->next_to_use = i;
|
|
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
#define E1000_MAX_TXD_PWR 12
|
|
#define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR)
|
|
|
|
static int
|
|
e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
|
|
struct sk_buff *skb, unsigned int first, unsigned int max_per_txd,
|
|
unsigned int nr_frags, unsigned int mss)
|
|
{
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned int len = skb->len;
|
|
unsigned int offset = 0, size, count = 0, i;
|
|
unsigned int f;
|
|
len -= skb->data_len;
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
while (len) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
size = min(len, max_per_txd);
|
|
/* Workaround for Controller erratum --
|
|
* descriptor for non-tso packet in a linear SKB that follows a
|
|
* tso gets written back prematurely before the data is fully
|
|
* DMA'd to the controller */
|
|
if (!skb->data_len && tx_ring->last_tx_tso &&
|
|
!skb_is_gso(skb)) {
|
|
tx_ring->last_tx_tso = 0;
|
|
size -= 4;
|
|
}
|
|
|
|
/* Workaround for premature desc write-backs
|
|
* in TSO mode. Append 4-byte sentinel desc */
|
|
if (unlikely(mss && !nr_frags && size == len && size > 8))
|
|
size -= 4;
|
|
/* work-around for errata 10 and it applies
|
|
* to all controllers in PCI-X mode
|
|
* The fix is to make sure that the first descriptor of a
|
|
* packet is smaller than 2048 - 16 - 16 (or 2016) bytes
|
|
*/
|
|
if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
|
|
(size > 2015) && count == 0))
|
|
size = 2015;
|
|
|
|
/* Workaround for potential 82544 hang in PCI-X. Avoid
|
|
* terminating buffers within evenly-aligned dwords. */
|
|
if (unlikely(adapter->pcix_82544 &&
|
|
!((unsigned long)(skb->data + offset + size - 1) & 4) &&
|
|
size > 4))
|
|
size -= 4;
|
|
|
|
buffer_info->length = size;
|
|
buffer_info->dma =
|
|
pci_map_single(adapter->pdev,
|
|
skb->data + offset,
|
|
size,
|
|
PCI_DMA_TODEVICE);
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->next_to_watch = i;
|
|
|
|
len -= size;
|
|
offset += size;
|
|
count++;
|
|
if (unlikely(++i == tx_ring->count)) i = 0;
|
|
}
|
|
|
|
for (f = 0; f < nr_frags; f++) {
|
|
struct skb_frag_struct *frag;
|
|
|
|
frag = &skb_shinfo(skb)->frags[f];
|
|
len = frag->size;
|
|
offset = frag->page_offset;
|
|
|
|
while (len) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
size = min(len, max_per_txd);
|
|
/* Workaround for premature desc write-backs
|
|
* in TSO mode. Append 4-byte sentinel desc */
|
|
if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8))
|
|
size -= 4;
|
|
/* Workaround for potential 82544 hang in PCI-X.
|
|
* Avoid terminating buffers within evenly-aligned
|
|
* dwords. */
|
|
if (unlikely(adapter->pcix_82544 &&
|
|
!((unsigned long)(frag->page+offset+size-1) & 4) &&
|
|
size > 4))
|
|
size -= 4;
|
|
|
|
buffer_info->length = size;
|
|
buffer_info->dma =
|
|
pci_map_page(adapter->pdev,
|
|
frag->page,
|
|
offset,
|
|
size,
|
|
PCI_DMA_TODEVICE);
|
|
buffer_info->time_stamp = jiffies;
|
|
buffer_info->next_to_watch = i;
|
|
|
|
len -= size;
|
|
offset += size;
|
|
count++;
|
|
if (unlikely(++i == tx_ring->count)) i = 0;
|
|
}
|
|
}
|
|
|
|
i = (i == 0) ? tx_ring->count - 1 : i - 1;
|
|
tx_ring->buffer_info[i].skb = skb;
|
|
tx_ring->buffer_info[first].next_to_watch = i;
|
|
|
|
return count;
|
|
}
|
|
|
|
static void
|
|
e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring,
|
|
int tx_flags, int count)
|
|
{
|
|
struct e1000_tx_desc *tx_desc = NULL;
|
|
struct e1000_buffer *buffer_info;
|
|
uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS;
|
|
unsigned int i;
|
|
|
|
if (likely(tx_flags & E1000_TX_FLAGS_TSO)) {
|
|
txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D |
|
|
E1000_TXD_CMD_TSE;
|
|
txd_upper |= E1000_TXD_POPTS_TXSM << 8;
|
|
|
|
if (likely(tx_flags & E1000_TX_FLAGS_IPV4))
|
|
txd_upper |= E1000_TXD_POPTS_IXSM << 8;
|
|
}
|
|
|
|
if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) {
|
|
txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D;
|
|
txd_upper |= E1000_TXD_POPTS_TXSM << 8;
|
|
}
|
|
|
|
if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) {
|
|
txd_lower |= E1000_TXD_CMD_VLE;
|
|
txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK);
|
|
}
|
|
|
|
i = tx_ring->next_to_use;
|
|
|
|
while (count--) {
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
tx_desc = E1000_TX_DESC(*tx_ring, i);
|
|
tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
|
|
tx_desc->lower.data =
|
|
cpu_to_le32(txd_lower | buffer_info->length);
|
|
tx_desc->upper.data = cpu_to_le32(txd_upper);
|
|
if (unlikely(++i == tx_ring->count)) i = 0;
|
|
}
|
|
|
|
tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd);
|
|
|
|
/* Force memory writes to complete before letting h/w
|
|
* know there are new descriptors to fetch. (Only
|
|
* applicable for weak-ordered memory model archs,
|
|
* such as IA-64). */
|
|
wmb();
|
|
|
|
tx_ring->next_to_use = i;
|
|
writel(i, adapter->hw.hw_addr + tx_ring->tdt);
|
|
/* we need this if more than one processor can write to our tail
|
|
* at a time, it syncronizes IO on IA64/Altix systems */
|
|
mmiowb();
|
|
}
|
|
|
|
/**
|
|
* 82547 workaround to avoid controller hang in half-duplex environment.
|
|
* The workaround is to avoid queuing a large packet that would span
|
|
* the internal Tx FIFO ring boundary by notifying the stack to resend
|
|
* the packet at a later time. This gives the Tx FIFO an opportunity to
|
|
* flush all packets. When that occurs, we reset the Tx FIFO pointers
|
|
* to the beginning of the Tx FIFO.
|
|
**/
|
|
|
|
#define E1000_FIFO_HDR 0x10
|
|
#define E1000_82547_PAD_LEN 0x3E0
|
|
|
|
static int
|
|
e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb)
|
|
{
|
|
uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head;
|
|
uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR;
|
|
|
|
skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR);
|
|
|
|
if (adapter->link_duplex != HALF_DUPLEX)
|
|
goto no_fifo_stall_required;
|
|
|
|
if (atomic_read(&adapter->tx_fifo_stall))
|
|
return 1;
|
|
|
|
if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) {
|
|
atomic_set(&adapter->tx_fifo_stall, 1);
|
|
return 1;
|
|
}
|
|
|
|
no_fifo_stall_required:
|
|
adapter->tx_fifo_head += skb_fifo_len;
|
|
if (adapter->tx_fifo_head >= adapter->tx_fifo_size)
|
|
adapter->tx_fifo_head -= adapter->tx_fifo_size;
|
|
return 0;
|
|
}
|
|
|
|
#define MINIMUM_DHCP_PACKET_SIZE 282
|
|
static int
|
|
e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
uint16_t length, offset;
|
|
if (vlan_tx_tag_present(skb)) {
|
|
if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
|
|
( adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) )
|
|
return 0;
|
|
}
|
|
if (skb->len > MINIMUM_DHCP_PACKET_SIZE) {
|
|
struct ethhdr *eth = (struct ethhdr *) skb->data;
|
|
if ((htons(ETH_P_IP) == eth->h_proto)) {
|
|
const struct iphdr *ip =
|
|
(struct iphdr *)((uint8_t *)skb->data+14);
|
|
if (IPPROTO_UDP == ip->protocol) {
|
|
struct udphdr *udp =
|
|
(struct udphdr *)((uint8_t *)ip +
|
|
(ip->ihl << 2));
|
|
if (ntohs(udp->dest) == 67) {
|
|
offset = (uint8_t *)udp + 8 - skb->data;
|
|
length = skb->len - offset;
|
|
|
|
return e1000_mng_write_dhcp_info(hw,
|
|
(uint8_t *)udp + 8,
|
|
length);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_tx_ring *tx_ring = adapter->tx_ring;
|
|
|
|
netif_stop_queue(netdev);
|
|
/* Herbert's original patch had:
|
|
* smp_mb__after_netif_stop_queue();
|
|
* but since that doesn't exist yet, just open code it. */
|
|
smp_mb();
|
|
|
|
/* We need to check again in a case another CPU has just
|
|
* made room available. */
|
|
if (likely(E1000_DESC_UNUSED(tx_ring) < size))
|
|
return -EBUSY;
|
|
|
|
/* A reprieve! */
|
|
netif_start_queue(netdev);
|
|
++adapter->restart_queue;
|
|
return 0;
|
|
}
|
|
|
|
static int e1000_maybe_stop_tx(struct net_device *netdev,
|
|
struct e1000_tx_ring *tx_ring, int size)
|
|
{
|
|
if (likely(E1000_DESC_UNUSED(tx_ring) >= size))
|
|
return 0;
|
|
return __e1000_maybe_stop_tx(netdev, size);
|
|
}
|
|
|
|
#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 )
|
|
static int
|
|
e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_tx_ring *tx_ring;
|
|
unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD;
|
|
unsigned int max_txd_pwr = E1000_MAX_TXD_PWR;
|
|
unsigned int tx_flags = 0;
|
|
unsigned int len = skb->len - skb->data_len;
|
|
unsigned long flags;
|
|
unsigned int nr_frags;
|
|
unsigned int mss;
|
|
int count = 0;
|
|
int tso;
|
|
unsigned int f;
|
|
|
|
/* This goes back to the question of how to logically map a tx queue
|
|
* to a flow. Right now, performance is impacted slightly negatively
|
|
* if using multiple tx queues. If the stack breaks away from a
|
|
* single qdisc implementation, we can look at this again. */
|
|
tx_ring = adapter->tx_ring;
|
|
|
|
if (unlikely(skb->len <= 0)) {
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/* 82571 and newer doesn't need the workaround that limited descriptor
|
|
* length to 4kB */
|
|
if (adapter->hw.mac_type >= e1000_82571)
|
|
max_per_txd = 8192;
|
|
|
|
mss = skb_shinfo(skb)->gso_size;
|
|
/* The controller does a simple calculation to
|
|
* make sure there is enough room in the FIFO before
|
|
* initiating the DMA for each buffer. The calc is:
|
|
* 4 = ceil(buffer len/mss). To make sure we don't
|
|
* overrun the FIFO, adjust the max buffer len if mss
|
|
* drops. */
|
|
if (mss) {
|
|
uint8_t hdr_len;
|
|
max_per_txd = min(mss << 2, max_per_txd);
|
|
max_txd_pwr = fls(max_per_txd) - 1;
|
|
|
|
/* TSO Workaround for 82571/2/3 Controllers -- if skb->data
|
|
* points to just header, pull a few bytes of payload from
|
|
* frags into skb->data */
|
|
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
|
|
if (skb->data_len && hdr_len == len) {
|
|
switch (adapter->hw.mac_type) {
|
|
unsigned int pull_size;
|
|
case e1000_82544:
|
|
/* Make sure we have room to chop off 4 bytes,
|
|
* and that the end alignment will work out to
|
|
* this hardware's requirements
|
|
* NOTE: this is a TSO only workaround
|
|
* if end byte alignment not correct move us
|
|
* into the next dword */
|
|
if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4)
|
|
break;
|
|
/* fall through */
|
|
case e1000_82571:
|
|
case e1000_82572:
|
|
case e1000_82573:
|
|
case e1000_ich8lan:
|
|
pull_size = min((unsigned int)4, skb->data_len);
|
|
if (!__pskb_pull_tail(skb, pull_size)) {
|
|
DPRINTK(DRV, ERR,
|
|
"__pskb_pull_tail failed.\n");
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
len = skb->len - skb->data_len;
|
|
break;
|
|
default:
|
|
/* do nothing */
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* reserve a descriptor for the offload context */
|
|
if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL))
|
|
count++;
|
|
count++;
|
|
|
|
/* Controller Erratum workaround */
|
|
if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb))
|
|
count++;
|
|
|
|
count += TXD_USE_COUNT(len, max_txd_pwr);
|
|
|
|
if (adapter->pcix_82544)
|
|
count++;
|
|
|
|
/* work-around for errata 10 and it applies to all controllers
|
|
* in PCI-X mode, so add one more descriptor to the count
|
|
*/
|
|
if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) &&
|
|
(len > 2015)))
|
|
count++;
|
|
|
|
nr_frags = skb_shinfo(skb)->nr_frags;
|
|
for (f = 0; f < nr_frags; f++)
|
|
count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size,
|
|
max_txd_pwr);
|
|
if (adapter->pcix_82544)
|
|
count += nr_frags;
|
|
|
|
|
|
if (adapter->hw.tx_pkt_filtering &&
|
|
(adapter->hw.mac_type == e1000_82573))
|
|
e1000_transfer_dhcp_info(adapter, skb);
|
|
|
|
if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags))
|
|
/* Collision - tell upper layer to requeue */
|
|
return NETDEV_TX_LOCKED;
|
|
|
|
/* need: count + 2 desc gap to keep tail from touching
|
|
* head, otherwise try next time */
|
|
if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) {
|
|
spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
if (unlikely(adapter->hw.mac_type == e1000_82547)) {
|
|
if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) {
|
|
netif_stop_queue(netdev);
|
|
mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1);
|
|
spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
}
|
|
|
|
if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) {
|
|
tx_flags |= E1000_TX_FLAGS_VLAN;
|
|
tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT);
|
|
}
|
|
|
|
first = tx_ring->next_to_use;
|
|
|
|
tso = e1000_tso(adapter, tx_ring, skb);
|
|
if (tso < 0) {
|
|
dev_kfree_skb_any(skb);
|
|
spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
if (likely(tso)) {
|
|
tx_ring->last_tx_tso = 1;
|
|
tx_flags |= E1000_TX_FLAGS_TSO;
|
|
} else if (likely(e1000_tx_csum(adapter, tx_ring, skb)))
|
|
tx_flags |= E1000_TX_FLAGS_CSUM;
|
|
|
|
/* Old method was to assume IPv4 packet by default if TSO was enabled.
|
|
* 82571 hardware supports TSO capabilities for IPv6 as well...
|
|
* no longer assume, we must. */
|
|
if (likely(skb->protocol == htons(ETH_P_IP)))
|
|
tx_flags |= E1000_TX_FLAGS_IPV4;
|
|
|
|
e1000_tx_queue(adapter, tx_ring, tx_flags,
|
|
e1000_tx_map(adapter, tx_ring, skb, first,
|
|
max_per_txd, nr_frags, mss));
|
|
|
|
netdev->trans_start = jiffies;
|
|
|
|
/* Make sure there is space in the ring for the next send. */
|
|
e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2);
|
|
|
|
spin_unlock_irqrestore(&tx_ring->tx_lock, flags);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
/**
|
|
* e1000_tx_timeout - Respond to a Tx Hang
|
|
* @netdev: network interface device structure
|
|
**/
|
|
|
|
static void
|
|
e1000_tx_timeout(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* Do the reset outside of interrupt context */
|
|
adapter->tx_timeout_count++;
|
|
schedule_work(&adapter->reset_task);
|
|
}
|
|
|
|
static void
|
|
e1000_reset_task(struct work_struct *work)
|
|
{
|
|
struct e1000_adapter *adapter =
|
|
container_of(work, struct e1000_adapter, reset_task);
|
|
|
|
e1000_reinit_locked(adapter);
|
|
}
|
|
|
|
/**
|
|
* e1000_get_stats - Get System Network Statistics
|
|
* @netdev: network interface device structure
|
|
*
|
|
* Returns the address of the device statistics structure.
|
|
* The statistics are actually updated from the timer callback.
|
|
**/
|
|
|
|
static struct net_device_stats *
|
|
e1000_get_stats(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
|
|
/* only return the current stats */
|
|
return &adapter->net_stats;
|
|
}
|
|
|
|
/**
|
|
* e1000_change_mtu - Change the Maximum Transfer Unit
|
|
* @netdev: network interface device structure
|
|
* @new_mtu: new value for maximum frame size
|
|
*
|
|
* Returns 0 on success, negative on failure
|
|
**/
|
|
|
|
static int
|
|
e1000_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
|
|
uint16_t eeprom_data = 0;
|
|
|
|
if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) ||
|
|
(max_frame > MAX_JUMBO_FRAME_SIZE)) {
|
|
DPRINTK(PROBE, ERR, "Invalid MTU setting\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Adapter-specific max frame size limits. */
|
|
switch (adapter->hw.mac_type) {
|
|
case e1000_undefined ... e1000_82542_rev2_1:
|
|
case e1000_ich8lan:
|
|
if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
|
|
DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n");
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case e1000_82573:
|
|
/* Jumbo Frames not supported if:
|
|
* - this is not an 82573L device
|
|
* - ASPM is enabled in any way (0x1A bits 3:2) */
|
|
e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1,
|
|
&eeprom_data);
|
|
if ((adapter->hw.device_id != E1000_DEV_ID_82573L) ||
|
|
(eeprom_data & EEPROM_WORD1A_ASPM_MASK)) {
|
|
if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) {
|
|
DPRINTK(PROBE, ERR,
|
|
"Jumbo Frames not supported.\n");
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
}
|
|
/* ERT will be enabled later to enable wire speed receives */
|
|
|
|
/* fall through to get support */
|
|
case e1000_82571:
|
|
case e1000_82572:
|
|
case e1000_80003es2lan:
|
|
#define MAX_STD_JUMBO_FRAME_SIZE 9234
|
|
if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) {
|
|
DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n");
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
/* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */
|
|
break;
|
|
}
|
|
|
|
/* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
|
|
* means we reserve 2 more, this pushes us to allocate from the next
|
|
* larger slab size
|
|
* i.e. RXBUFFER_2048 --> size-4096 slab */
|
|
|
|
if (max_frame <= E1000_RXBUFFER_256)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_256;
|
|
else if (max_frame <= E1000_RXBUFFER_512)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_512;
|
|
else if (max_frame <= E1000_RXBUFFER_1024)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_1024;
|
|
else if (max_frame <= E1000_RXBUFFER_2048)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_2048;
|
|
else if (max_frame <= E1000_RXBUFFER_4096)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_4096;
|
|
else if (max_frame <= E1000_RXBUFFER_8192)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_8192;
|
|
else if (max_frame <= E1000_RXBUFFER_16384)
|
|
adapter->rx_buffer_len = E1000_RXBUFFER_16384;
|
|
|
|
/* adjust allocation if LPE protects us, and we aren't using SBP */
|
|
if (!adapter->hw.tbi_compatibility_on &&
|
|
((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) ||
|
|
(max_frame == MAXIMUM_ETHERNET_VLAN_SIZE)))
|
|
adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE;
|
|
|
|
netdev->mtu = new_mtu;
|
|
adapter->hw.max_frame_size = max_frame;
|
|
|
|
if (netif_running(netdev))
|
|
e1000_reinit_locked(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_update_stats - Update the board statistics counters
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
void
|
|
e1000_update_stats(struct e1000_adapter *adapter)
|
|
{
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
unsigned long flags;
|
|
uint16_t phy_tmp;
|
|
|
|
#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF
|
|
|
|
/*
|
|
* Prevent stats update while adapter is being reset, or if the pci
|
|
* connection is down.
|
|
*/
|
|
if (adapter->link_speed == 0)
|
|
return;
|
|
if (pci_channel_offline(pdev))
|
|
return;
|
|
|
|
spin_lock_irqsave(&adapter->stats_lock, flags);
|
|
|
|
/* these counters are modified from e1000_tbi_adjust_stats,
|
|
* called from the interrupt context, so they must only
|
|
* be written while holding adapter->stats_lock
|
|
*/
|
|
|
|
adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS);
|
|
adapter->stats.gprc += E1000_READ_REG(hw, GPRC);
|
|
adapter->stats.gorcl += E1000_READ_REG(hw, GORCL);
|
|
adapter->stats.gorch += E1000_READ_REG(hw, GORCH);
|
|
adapter->stats.bprc += E1000_READ_REG(hw, BPRC);
|
|
adapter->stats.mprc += E1000_READ_REG(hw, MPRC);
|
|
adapter->stats.roc += E1000_READ_REG(hw, ROC);
|
|
|
|
if (adapter->hw.mac_type != e1000_ich8lan) {
|
|
adapter->stats.prc64 += E1000_READ_REG(hw, PRC64);
|
|
adapter->stats.prc127 += E1000_READ_REG(hw, PRC127);
|
|
adapter->stats.prc255 += E1000_READ_REG(hw, PRC255);
|
|
adapter->stats.prc511 += E1000_READ_REG(hw, PRC511);
|
|
adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023);
|
|
adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522);
|
|
}
|
|
|
|
adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS);
|
|
adapter->stats.mpc += E1000_READ_REG(hw, MPC);
|
|
adapter->stats.scc += E1000_READ_REG(hw, SCC);
|
|
adapter->stats.ecol += E1000_READ_REG(hw, ECOL);
|
|
adapter->stats.mcc += E1000_READ_REG(hw, MCC);
|
|
adapter->stats.latecol += E1000_READ_REG(hw, LATECOL);
|
|
adapter->stats.dc += E1000_READ_REG(hw, DC);
|
|
adapter->stats.sec += E1000_READ_REG(hw, SEC);
|
|
adapter->stats.rlec += E1000_READ_REG(hw, RLEC);
|
|
adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC);
|
|
adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC);
|
|
adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC);
|
|
adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC);
|
|
adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC);
|
|
adapter->stats.gptc += E1000_READ_REG(hw, GPTC);
|
|
adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL);
|
|
adapter->stats.gotch += E1000_READ_REG(hw, GOTCH);
|
|
adapter->stats.rnbc += E1000_READ_REG(hw, RNBC);
|
|
adapter->stats.ruc += E1000_READ_REG(hw, RUC);
|
|
adapter->stats.rfc += E1000_READ_REG(hw, RFC);
|
|
adapter->stats.rjc += E1000_READ_REG(hw, RJC);
|
|
adapter->stats.torl += E1000_READ_REG(hw, TORL);
|
|
adapter->stats.torh += E1000_READ_REG(hw, TORH);
|
|
adapter->stats.totl += E1000_READ_REG(hw, TOTL);
|
|
adapter->stats.toth += E1000_READ_REG(hw, TOTH);
|
|
adapter->stats.tpr += E1000_READ_REG(hw, TPR);
|
|
|
|
if (adapter->hw.mac_type != e1000_ich8lan) {
|
|
adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64);
|
|
adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127);
|
|
adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255);
|
|
adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511);
|
|
adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023);
|
|
adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522);
|
|
}
|
|
|
|
adapter->stats.mptc += E1000_READ_REG(hw, MPTC);
|
|
adapter->stats.bptc += E1000_READ_REG(hw, BPTC);
|
|
|
|
/* used for adaptive IFS */
|
|
|
|
hw->tx_packet_delta = E1000_READ_REG(hw, TPT);
|
|
adapter->stats.tpt += hw->tx_packet_delta;
|
|
hw->collision_delta = E1000_READ_REG(hw, COLC);
|
|
adapter->stats.colc += hw->collision_delta;
|
|
|
|
if (hw->mac_type >= e1000_82543) {
|
|
adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC);
|
|
adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC);
|
|
adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS);
|
|
adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR);
|
|
adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC);
|
|
adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC);
|
|
}
|
|
if (hw->mac_type > e1000_82547_rev_2) {
|
|
adapter->stats.iac += E1000_READ_REG(hw, IAC);
|
|
adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC);
|
|
|
|
if (adapter->hw.mac_type != e1000_ich8lan) {
|
|
adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC);
|
|
adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC);
|
|
adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC);
|
|
adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC);
|
|
adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC);
|
|
adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC);
|
|
adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC);
|
|
}
|
|
}
|
|
|
|
/* Fill out the OS statistics structure */
|
|
adapter->net_stats.multicast = adapter->stats.mprc;
|
|
adapter->net_stats.collisions = adapter->stats.colc;
|
|
|
|
/* Rx Errors */
|
|
|
|
/* RLEC on some newer hardware can be incorrect so build
|
|
* our own version based on RUC and ROC */
|
|
adapter->net_stats.rx_errors = adapter->stats.rxerrc +
|
|
adapter->stats.crcerrs + adapter->stats.algnerrc +
|
|
adapter->stats.ruc + adapter->stats.roc +
|
|
adapter->stats.cexterr;
|
|
adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc;
|
|
adapter->net_stats.rx_length_errors = adapter->stats.rlerrc;
|
|
adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs;
|
|
adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc;
|
|
adapter->net_stats.rx_missed_errors = adapter->stats.mpc;
|
|
|
|
/* Tx Errors */
|
|
adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol;
|
|
adapter->net_stats.tx_errors = adapter->stats.txerrc;
|
|
adapter->net_stats.tx_aborted_errors = adapter->stats.ecol;
|
|
adapter->net_stats.tx_window_errors = adapter->stats.latecol;
|
|
adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs;
|
|
if (adapter->hw.bad_tx_carr_stats_fd &&
|
|
adapter->link_duplex == FULL_DUPLEX) {
|
|
adapter->net_stats.tx_carrier_errors = 0;
|
|
adapter->stats.tncrs = 0;
|
|
}
|
|
|
|
/* Tx Dropped needs to be maintained elsewhere */
|
|
|
|
/* Phy Stats */
|
|
if (hw->media_type == e1000_media_type_copper) {
|
|
if ((adapter->link_speed == SPEED_1000) &&
|
|
(!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) {
|
|
phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK;
|
|
adapter->phy_stats.idle_errors += phy_tmp;
|
|
}
|
|
|
|
if ((hw->mac_type <= e1000_82546) &&
|
|
(hw->phy_type == e1000_phy_m88) &&
|
|
!e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp))
|
|
adapter->phy_stats.receive_errors += phy_tmp;
|
|
}
|
|
|
|
/* Management Stats */
|
|
if (adapter->hw.has_smbus) {
|
|
adapter->stats.mgptc += E1000_READ_REG(hw, MGTPTC);
|
|
adapter->stats.mgprc += E1000_READ_REG(hw, MGTPRC);
|
|
adapter->stats.mgpdc += E1000_READ_REG(hw, MGTPDC);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&adapter->stats_lock, flags);
|
|
}
|
|
|
|
/**
|
|
* e1000_intr_msi - Interrupt Handler
|
|
* @irq: interrupt number
|
|
* @data: pointer to a network interface device structure
|
|
**/
|
|
|
|
static irqreturn_t
|
|
e1000_intr_msi(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
#ifndef CONFIG_E1000_NAPI
|
|
int i;
|
|
#endif
|
|
uint32_t icr = E1000_READ_REG(hw, ICR);
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
/* read ICR disables interrupts using IAM, so keep up with our
|
|
* enable/disable accounting */
|
|
atomic_inc(&adapter->irq_sem);
|
|
#endif
|
|
if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) {
|
|
hw->get_link_status = 1;
|
|
/* 80003ES2LAN workaround-- For packet buffer work-around on
|
|
* link down event; disable receives here in the ISR and reset
|
|
* adapter in watchdog */
|
|
if (netif_carrier_ok(netdev) &&
|
|
(adapter->hw.mac_type == e1000_80003es2lan)) {
|
|
/* disable receives */
|
|
uint32_t rctl = E1000_READ_REG(hw, RCTL);
|
|
E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
|
|
}
|
|
/* guard against interrupt when we're going down */
|
|
if (!test_bit(__E1000_DOWN, &adapter->flags))
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 1);
|
|
}
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) {
|
|
adapter->total_tx_bytes = 0;
|
|
adapter->total_tx_packets = 0;
|
|
adapter->total_rx_bytes = 0;
|
|
adapter->total_rx_packets = 0;
|
|
__netif_rx_schedule(netdev, &adapter->napi);
|
|
} else
|
|
e1000_irq_enable(adapter);
|
|
#else
|
|
adapter->total_tx_bytes = 0;
|
|
adapter->total_rx_bytes = 0;
|
|
adapter->total_tx_packets = 0;
|
|
adapter->total_rx_packets = 0;
|
|
|
|
for (i = 0; i < E1000_MAX_INTR; i++)
|
|
if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
|
|
!e1000_clean_tx_irq(adapter, adapter->tx_ring)))
|
|
break;
|
|
|
|
if (likely(adapter->itr_setting & 3))
|
|
e1000_set_itr(adapter);
|
|
#endif
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/**
|
|
* e1000_intr - Interrupt Handler
|
|
* @irq: interrupt number
|
|
* @data: pointer to a network interface device structure
|
|
**/
|
|
|
|
static irqreturn_t
|
|
e1000_intr(int irq, void *data)
|
|
{
|
|
struct net_device *netdev = data;
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct e1000_hw *hw = &adapter->hw;
|
|
uint32_t rctl, icr = E1000_READ_REG(hw, ICR);
|
|
#ifndef CONFIG_E1000_NAPI
|
|
int i;
|
|
#endif
|
|
if (unlikely(!icr))
|
|
return IRQ_NONE; /* Not our interrupt */
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
/* IMS will not auto-mask if INT_ASSERTED is not set, and if it is
|
|
* not set, then the adapter didn't send an interrupt */
|
|
if (unlikely(hw->mac_type >= e1000_82571 &&
|
|
!(icr & E1000_ICR_INT_ASSERTED)))
|
|
return IRQ_NONE;
|
|
|
|
/* Interrupt Auto-Mask...upon reading ICR,
|
|
* interrupts are masked. No need for the
|
|
* IMC write, but it does mean we should
|
|
* account for it ASAP. */
|
|
if (likely(hw->mac_type >= e1000_82571))
|
|
atomic_inc(&adapter->irq_sem);
|
|
#endif
|
|
|
|
if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) {
|
|
hw->get_link_status = 1;
|
|
/* 80003ES2LAN workaround--
|
|
* For packet buffer work-around on link down event;
|
|
* disable receives here in the ISR and
|
|
* reset adapter in watchdog
|
|
*/
|
|
if (netif_carrier_ok(netdev) &&
|
|
(adapter->hw.mac_type == e1000_80003es2lan)) {
|
|
/* disable receives */
|
|
rctl = E1000_READ_REG(hw, RCTL);
|
|
E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
|
|
}
|
|
/* guard against interrupt when we're going down */
|
|
if (!test_bit(__E1000_DOWN, &adapter->flags))
|
|
mod_timer(&adapter->watchdog_timer, jiffies + 1);
|
|
}
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if (unlikely(hw->mac_type < e1000_82571)) {
|
|
/* disable interrupts, without the synchronize_irq bit */
|
|
atomic_inc(&adapter->irq_sem);
|
|
E1000_WRITE_REG(hw, IMC, ~0);
|
|
E1000_WRITE_FLUSH(hw);
|
|
}
|
|
if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) {
|
|
adapter->total_tx_bytes = 0;
|
|
adapter->total_tx_packets = 0;
|
|
adapter->total_rx_bytes = 0;
|
|
adapter->total_rx_packets = 0;
|
|
__netif_rx_schedule(netdev, &adapter->napi);
|
|
} else
|
|
/* this really should not happen! if it does it is basically a
|
|
* bug, but not a hard error, so enable ints and continue */
|
|
e1000_irq_enable(adapter);
|
|
#else
|
|
/* Writing IMC and IMS is needed for 82547.
|
|
* Due to Hub Link bus being occupied, an interrupt
|
|
* de-assertion message is not able to be sent.
|
|
* When an interrupt assertion message is generated later,
|
|
* two messages are re-ordered and sent out.
|
|
* That causes APIC to think 82547 is in de-assertion
|
|
* state, while 82547 is in assertion state, resulting
|
|
* in dead lock. Writing IMC forces 82547 into
|
|
* de-assertion state.
|
|
*/
|
|
if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) {
|
|
atomic_inc(&adapter->irq_sem);
|
|
E1000_WRITE_REG(hw, IMC, ~0);
|
|
}
|
|
|
|
adapter->total_tx_bytes = 0;
|
|
adapter->total_rx_bytes = 0;
|
|
adapter->total_tx_packets = 0;
|
|
adapter->total_rx_packets = 0;
|
|
|
|
for (i = 0; i < E1000_MAX_INTR; i++)
|
|
if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) &
|
|
!e1000_clean_tx_irq(adapter, adapter->tx_ring)))
|
|
break;
|
|
|
|
if (likely(adapter->itr_setting & 3))
|
|
e1000_set_itr(adapter);
|
|
|
|
if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2)
|
|
e1000_irq_enable(adapter);
|
|
|
|
#endif
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
/**
|
|
* e1000_clean - NAPI Rx polling callback
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static int
|
|
e1000_clean(struct napi_struct *napi, int budget)
|
|
{
|
|
struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
|
|
struct net_device *poll_dev = adapter->netdev;
|
|
int tx_cleaned = 0, work_done = 0;
|
|
|
|
/* Must NOT use netdev_priv macro here. */
|
|
adapter = poll_dev->priv;
|
|
|
|
/* e1000_clean is called per-cpu. This lock protects
|
|
* tx_ring[0] from being cleaned by multiple cpus
|
|
* simultaneously. A failure obtaining the lock means
|
|
* tx_ring[0] is currently being cleaned anyway. */
|
|
if (spin_trylock(&adapter->tx_queue_lock)) {
|
|
tx_cleaned = e1000_clean_tx_irq(adapter,
|
|
&adapter->tx_ring[0]);
|
|
spin_unlock(&adapter->tx_queue_lock);
|
|
}
|
|
|
|
adapter->clean_rx(adapter, &adapter->rx_ring[0],
|
|
&work_done, budget);
|
|
|
|
if (tx_cleaned)
|
|
work_done = budget;
|
|
|
|
/* If budget not fully consumed, exit the polling mode */
|
|
if (work_done < budget) {
|
|
if (likely(adapter->itr_setting & 3))
|
|
e1000_set_itr(adapter);
|
|
netif_rx_complete(poll_dev, napi);
|
|
e1000_irq_enable(adapter);
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
#endif
|
|
/**
|
|
* e1000_clean_tx_irq - Reclaim resources after transmit completes
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static bool
|
|
e1000_clean_tx_irq(struct e1000_adapter *adapter,
|
|
struct e1000_tx_ring *tx_ring)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct e1000_tx_desc *tx_desc, *eop_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
unsigned int i, eop;
|
|
#ifdef CONFIG_E1000_NAPI
|
|
unsigned int count = 0;
|
|
#endif
|
|
bool cleaned = false;
|
|
unsigned int total_tx_bytes=0, total_tx_packets=0;
|
|
|
|
i = tx_ring->next_to_clean;
|
|
eop = tx_ring->buffer_info[i].next_to_watch;
|
|
eop_desc = E1000_TX_DESC(*tx_ring, eop);
|
|
|
|
while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) {
|
|
for (cleaned = false; !cleaned; ) {
|
|
tx_desc = E1000_TX_DESC(*tx_ring, i);
|
|
buffer_info = &tx_ring->buffer_info[i];
|
|
cleaned = (i == eop);
|
|
|
|
if (cleaned) {
|
|
struct sk_buff *skb = buffer_info->skb;
|
|
unsigned int segs, bytecount;
|
|
segs = skb_shinfo(skb)->gso_segs ?: 1;
|
|
/* multiply data chunks by size of headers */
|
|
bytecount = ((segs - 1) * skb_headlen(skb)) +
|
|
skb->len;
|
|
total_tx_packets += segs;
|
|
total_tx_bytes += bytecount;
|
|
}
|
|
e1000_unmap_and_free_tx_resource(adapter, buffer_info);
|
|
tx_desc->upper.data = 0;
|
|
|
|
if (unlikely(++i == tx_ring->count)) i = 0;
|
|
}
|
|
|
|
eop = tx_ring->buffer_info[i].next_to_watch;
|
|
eop_desc = E1000_TX_DESC(*tx_ring, eop);
|
|
#ifdef CONFIG_E1000_NAPI
|
|
#define E1000_TX_WEIGHT 64
|
|
/* weight of a sort for tx, to avoid endless transmit cleanup */
|
|
if (count++ == E1000_TX_WEIGHT) break;
|
|
#endif
|
|
}
|
|
|
|
tx_ring->next_to_clean = i;
|
|
|
|
#define TX_WAKE_THRESHOLD 32
|
|
if (unlikely(cleaned && netif_carrier_ok(netdev) &&
|
|
E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) {
|
|
/* Make sure that anybody stopping the queue after this
|
|
* sees the new next_to_clean.
|
|
*/
|
|
smp_mb();
|
|
if (netif_queue_stopped(netdev)) {
|
|
netif_wake_queue(netdev);
|
|
++adapter->restart_queue;
|
|
}
|
|
}
|
|
|
|
if (adapter->detect_tx_hung) {
|
|
/* Detect a transmit hang in hardware, this serializes the
|
|
* check with the clearing of time_stamp and movement of i */
|
|
adapter->detect_tx_hung = false;
|
|
if (tx_ring->buffer_info[eop].dma &&
|
|
time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
|
|
(adapter->tx_timeout_factor * HZ))
|
|
&& !(E1000_READ_REG(&adapter->hw, STATUS) &
|
|
E1000_STATUS_TXOFF)) {
|
|
|
|
/* detected Tx unit hang */
|
|
DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n"
|
|
" Tx Queue <%lu>\n"
|
|
" TDH <%x>\n"
|
|
" TDT <%x>\n"
|
|
" next_to_use <%x>\n"
|
|
" next_to_clean <%x>\n"
|
|
"buffer_info[next_to_clean]\n"
|
|
" time_stamp <%lx>\n"
|
|
" next_to_watch <%x>\n"
|
|
" jiffies <%lx>\n"
|
|
" next_to_watch.status <%x>\n",
|
|
(unsigned long)((tx_ring - adapter->tx_ring) /
|
|
sizeof(struct e1000_tx_ring)),
|
|
readl(adapter->hw.hw_addr + tx_ring->tdh),
|
|
readl(adapter->hw.hw_addr + tx_ring->tdt),
|
|
tx_ring->next_to_use,
|
|
tx_ring->next_to_clean,
|
|
tx_ring->buffer_info[eop].time_stamp,
|
|
eop,
|
|
jiffies,
|
|
eop_desc->upper.fields.status);
|
|
netif_stop_queue(netdev);
|
|
}
|
|
}
|
|
adapter->total_tx_bytes += total_tx_bytes;
|
|
adapter->total_tx_packets += total_tx_packets;
|
|
adapter->net_stats.tx_bytes += total_tx_bytes;
|
|
adapter->net_stats.tx_packets += total_tx_packets;
|
|
return cleaned;
|
|
}
|
|
|
|
/**
|
|
* e1000_rx_checksum - Receive Checksum Offload for 82543
|
|
* @adapter: board private structure
|
|
* @status_err: receive descriptor status and error fields
|
|
* @csum: receive descriptor csum field
|
|
* @sk_buff: socket buffer with received data
|
|
**/
|
|
|
|
static void
|
|
e1000_rx_checksum(struct e1000_adapter *adapter,
|
|
uint32_t status_err, uint32_t csum,
|
|
struct sk_buff *skb)
|
|
{
|
|
uint16_t status = (uint16_t)status_err;
|
|
uint8_t errors = (uint8_t)(status_err >> 24);
|
|
skb->ip_summed = CHECKSUM_NONE;
|
|
|
|
/* 82543 or newer only */
|
|
if (unlikely(adapter->hw.mac_type < e1000_82543)) return;
|
|
/* Ignore Checksum bit is set */
|
|
if (unlikely(status & E1000_RXD_STAT_IXSM)) return;
|
|
/* TCP/UDP checksum error bit is set */
|
|
if (unlikely(errors & E1000_RXD_ERR_TCPE)) {
|
|
/* let the stack verify checksum errors */
|
|
adapter->hw_csum_err++;
|
|
return;
|
|
}
|
|
/* TCP/UDP Checksum has not been calculated */
|
|
if (adapter->hw.mac_type <= e1000_82547_rev_2) {
|
|
if (!(status & E1000_RXD_STAT_TCPCS))
|
|
return;
|
|
} else {
|
|
if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)))
|
|
return;
|
|
}
|
|
/* It must be a TCP or UDP packet with a valid checksum */
|
|
if (likely(status & E1000_RXD_STAT_TCPCS)) {
|
|
/* TCP checksum is good */
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
} else if (adapter->hw.mac_type > e1000_82547_rev_2) {
|
|
/* IP fragment with UDP payload */
|
|
/* Hardware complements the payload checksum, so we undo it
|
|
* and then put the value in host order for further stack use.
|
|
*/
|
|
__sum16 sum = (__force __sum16)htons(csum);
|
|
skb->csum = csum_unfold(~sum);
|
|
skb->ip_summed = CHECKSUM_COMPLETE;
|
|
}
|
|
adapter->hw_csum_good++;
|
|
}
|
|
|
|
/**
|
|
* e1000_clean_rx_irq - Send received data up the network stack; legacy
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static bool
|
|
#ifdef CONFIG_E1000_NAPI
|
|
e1000_clean_rx_irq(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rx_ring,
|
|
int *work_done, int work_to_do)
|
|
#else
|
|
e1000_clean_rx_irq(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rx_ring)
|
|
#endif
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct e1000_rx_desc *rx_desc, *next_rxd;
|
|
struct e1000_buffer *buffer_info, *next_buffer;
|
|
unsigned long flags;
|
|
uint32_t length;
|
|
uint8_t last_byte;
|
|
unsigned int i;
|
|
int cleaned_count = 0;
|
|
bool cleaned = false;
|
|
unsigned int total_rx_bytes=0, total_rx_packets=0;
|
|
|
|
i = rx_ring->next_to_clean;
|
|
rx_desc = E1000_RX_DESC(*rx_ring, i);
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
|
|
while (rx_desc->status & E1000_RXD_STAT_DD) {
|
|
struct sk_buff *skb;
|
|
u8 status;
|
|
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if (*work_done >= work_to_do)
|
|
break;
|
|
(*work_done)++;
|
|
#endif
|
|
status = rx_desc->status;
|
|
skb = buffer_info->skb;
|
|
buffer_info->skb = NULL;
|
|
|
|
prefetch(skb->data - NET_IP_ALIGN);
|
|
|
|
if (++i == rx_ring->count) i = 0;
|
|
next_rxd = E1000_RX_DESC(*rx_ring, i);
|
|
prefetch(next_rxd);
|
|
|
|
next_buffer = &rx_ring->buffer_info[i];
|
|
|
|
cleaned = true;
|
|
cleaned_count++;
|
|
pci_unmap_single(pdev,
|
|
buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
length = le16_to_cpu(rx_desc->length);
|
|
|
|
if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
|
|
/* All receives must fit into a single buffer */
|
|
E1000_DBG("%s: Receive packet consumed multiple"
|
|
" buffers\n", netdev->name);
|
|
/* recycle */
|
|
buffer_info->skb = skb;
|
|
goto next_desc;
|
|
}
|
|
|
|
if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
|
|
last_byte = *(skb->data + length - 1);
|
|
if (TBI_ACCEPT(&adapter->hw, status,
|
|
rx_desc->errors, length, last_byte)) {
|
|
spin_lock_irqsave(&adapter->stats_lock, flags);
|
|
e1000_tbi_adjust_stats(&adapter->hw,
|
|
&adapter->stats,
|
|
length, skb->data);
|
|
spin_unlock_irqrestore(&adapter->stats_lock,
|
|
flags);
|
|
length--;
|
|
} else {
|
|
/* recycle */
|
|
buffer_info->skb = skb;
|
|
goto next_desc;
|
|
}
|
|
}
|
|
|
|
/* adjust length to remove Ethernet CRC, this must be
|
|
* done after the TBI_ACCEPT workaround above */
|
|
length -= 4;
|
|
|
|
/* probably a little skewed due to removing CRC */
|
|
total_rx_bytes += length;
|
|
total_rx_packets++;
|
|
|
|
/* code added for copybreak, this should improve
|
|
* performance for small packets with large amounts
|
|
* of reassembly being done in the stack */
|
|
if (length < copybreak) {
|
|
struct sk_buff *new_skb =
|
|
netdev_alloc_skb(netdev, length + NET_IP_ALIGN);
|
|
if (new_skb) {
|
|
skb_reserve(new_skb, NET_IP_ALIGN);
|
|
skb_copy_to_linear_data_offset(new_skb,
|
|
-NET_IP_ALIGN,
|
|
(skb->data -
|
|
NET_IP_ALIGN),
|
|
(length +
|
|
NET_IP_ALIGN));
|
|
/* save the skb in buffer_info as good */
|
|
buffer_info->skb = skb;
|
|
skb = new_skb;
|
|
}
|
|
/* else just continue with the old one */
|
|
}
|
|
/* end copybreak code */
|
|
skb_put(skb, length);
|
|
|
|
/* Receive Checksum Offload */
|
|
e1000_rx_checksum(adapter,
|
|
(uint32_t)(status) |
|
|
((uint32_t)(rx_desc->errors) << 24),
|
|
le16_to_cpu(rx_desc->csum), skb);
|
|
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if (unlikely(adapter->vlgrp &&
|
|
(status & E1000_RXD_STAT_VP))) {
|
|
vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
|
|
le16_to_cpu(rx_desc->special) &
|
|
E1000_RXD_SPC_VLAN_MASK);
|
|
} else {
|
|
netif_receive_skb(skb);
|
|
}
|
|
#else /* CONFIG_E1000_NAPI */
|
|
if (unlikely(adapter->vlgrp &&
|
|
(status & E1000_RXD_STAT_VP))) {
|
|
vlan_hwaccel_rx(skb, adapter->vlgrp,
|
|
le16_to_cpu(rx_desc->special) &
|
|
E1000_RXD_SPC_VLAN_MASK);
|
|
} else {
|
|
netif_rx(skb);
|
|
}
|
|
#endif /* CONFIG_E1000_NAPI */
|
|
netdev->last_rx = jiffies;
|
|
|
|
next_desc:
|
|
rx_desc->status = 0;
|
|
|
|
/* return some buffers to hardware, one at a time is too slow */
|
|
if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
|
|
adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
|
|
cleaned_count = 0;
|
|
}
|
|
|
|
/* use prefetched values */
|
|
rx_desc = next_rxd;
|
|
buffer_info = next_buffer;
|
|
}
|
|
rx_ring->next_to_clean = i;
|
|
|
|
cleaned_count = E1000_DESC_UNUSED(rx_ring);
|
|
if (cleaned_count)
|
|
adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
|
|
|
|
adapter->total_rx_packets += total_rx_packets;
|
|
adapter->total_rx_bytes += total_rx_bytes;
|
|
adapter->net_stats.rx_bytes += total_rx_bytes;
|
|
adapter->net_stats.rx_packets += total_rx_packets;
|
|
return cleaned;
|
|
}
|
|
|
|
/**
|
|
* e1000_clean_rx_irq_ps - Send received data up the network stack; packet split
|
|
* @adapter: board private structure
|
|
**/
|
|
|
|
static bool
|
|
#ifdef CONFIG_E1000_NAPI
|
|
e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rx_ring,
|
|
int *work_done, int work_to_do)
|
|
#else
|
|
e1000_clean_rx_irq_ps(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rx_ring)
|
|
#endif
|
|
{
|
|
union e1000_rx_desc_packet_split *rx_desc, *next_rxd;
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct e1000_buffer *buffer_info, *next_buffer;
|
|
struct e1000_ps_page *ps_page;
|
|
struct e1000_ps_page_dma *ps_page_dma;
|
|
struct sk_buff *skb;
|
|
unsigned int i, j;
|
|
uint32_t length, staterr;
|
|
int cleaned_count = 0;
|
|
bool cleaned = false;
|
|
unsigned int total_rx_bytes=0, total_rx_packets=0;
|
|
|
|
i = rx_ring->next_to_clean;
|
|
rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
|
|
staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
|
|
while (staterr & E1000_RXD_STAT_DD) {
|
|
ps_page = &rx_ring->ps_page[i];
|
|
ps_page_dma = &rx_ring->ps_page_dma[i];
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if (unlikely(*work_done >= work_to_do))
|
|
break;
|
|
(*work_done)++;
|
|
#endif
|
|
skb = buffer_info->skb;
|
|
|
|
/* in the packet split case this is header only */
|
|
prefetch(skb->data - NET_IP_ALIGN);
|
|
|
|
if (++i == rx_ring->count) i = 0;
|
|
next_rxd = E1000_RX_DESC_PS(*rx_ring, i);
|
|
prefetch(next_rxd);
|
|
|
|
next_buffer = &rx_ring->buffer_info[i];
|
|
|
|
cleaned = true;
|
|
cleaned_count++;
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
buffer_info->length,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) {
|
|
E1000_DBG("%s: Packet Split buffers didn't pick up"
|
|
" the full packet\n", netdev->name);
|
|
dev_kfree_skb_irq(skb);
|
|
goto next_desc;
|
|
}
|
|
|
|
if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) {
|
|
dev_kfree_skb_irq(skb);
|
|
goto next_desc;
|
|
}
|
|
|
|
length = le16_to_cpu(rx_desc->wb.middle.length0);
|
|
|
|
if (unlikely(!length)) {
|
|
E1000_DBG("%s: Last part of the packet spanning"
|
|
" multiple descriptors\n", netdev->name);
|
|
dev_kfree_skb_irq(skb);
|
|
goto next_desc;
|
|
}
|
|
|
|
/* Good Receive */
|
|
skb_put(skb, length);
|
|
|
|
{
|
|
/* this looks ugly, but it seems compiler issues make it
|
|
more efficient than reusing j */
|
|
int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]);
|
|
|
|
/* page alloc/put takes too long and effects small packet
|
|
* throughput, so unsplit small packets and save the alloc/put*/
|
|
if (l1 && (l1 <= copybreak) && ((length + l1) <= adapter->rx_ps_bsize0)) {
|
|
u8 *vaddr;
|
|
/* there is no documentation about how to call
|
|
* kmap_atomic, so we can't hold the mapping
|
|
* very long */
|
|
pci_dma_sync_single_for_cpu(pdev,
|
|
ps_page_dma->ps_page_dma[0],
|
|
PAGE_SIZE,
|
|
PCI_DMA_FROMDEVICE);
|
|
vaddr = kmap_atomic(ps_page->ps_page[0],
|
|
KM_SKB_DATA_SOFTIRQ);
|
|
memcpy(skb_tail_pointer(skb), vaddr, l1);
|
|
kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
|
|
pci_dma_sync_single_for_device(pdev,
|
|
ps_page_dma->ps_page_dma[0],
|
|
PAGE_SIZE, PCI_DMA_FROMDEVICE);
|
|
/* remove the CRC */
|
|
l1 -= 4;
|
|
skb_put(skb, l1);
|
|
goto copydone;
|
|
} /* if */
|
|
}
|
|
|
|
for (j = 0; j < adapter->rx_ps_pages; j++) {
|
|
if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j])))
|
|
break;
|
|
pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j],
|
|
PAGE_SIZE, PCI_DMA_FROMDEVICE);
|
|
ps_page_dma->ps_page_dma[j] = 0;
|
|
skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0,
|
|
length);
|
|
ps_page->ps_page[j] = NULL;
|
|
skb->len += length;
|
|
skb->data_len += length;
|
|
skb->truesize += length;
|
|
}
|
|
|
|
/* strip the ethernet crc, problem is we're using pages now so
|
|
* this whole operation can get a little cpu intensive */
|
|
pskb_trim(skb, skb->len - 4);
|
|
|
|
copydone:
|
|
total_rx_bytes += skb->len;
|
|
total_rx_packets++;
|
|
|
|
e1000_rx_checksum(adapter, staterr,
|
|
le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb);
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
if (likely(rx_desc->wb.upper.header_status &
|
|
cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)))
|
|
adapter->rx_hdr_split++;
|
|
#ifdef CONFIG_E1000_NAPI
|
|
if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
|
|
vlan_hwaccel_receive_skb(skb, adapter->vlgrp,
|
|
le16_to_cpu(rx_desc->wb.middle.vlan) &
|
|
E1000_RXD_SPC_VLAN_MASK);
|
|
} else {
|
|
netif_receive_skb(skb);
|
|
}
|
|
#else /* CONFIG_E1000_NAPI */
|
|
if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) {
|
|
vlan_hwaccel_rx(skb, adapter->vlgrp,
|
|
le16_to_cpu(rx_desc->wb.middle.vlan) &
|
|
E1000_RXD_SPC_VLAN_MASK);
|
|
} else {
|
|
netif_rx(skb);
|
|
}
|
|
#endif /* CONFIG_E1000_NAPI */
|
|
netdev->last_rx = jiffies;
|
|
|
|
next_desc:
|
|
rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF);
|
|
buffer_info->skb = NULL;
|
|
|
|
/* return some buffers to hardware, one at a time is too slow */
|
|
if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
|
|
adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
|
|
cleaned_count = 0;
|
|
}
|
|
|
|
/* use prefetched values */
|
|
rx_desc = next_rxd;
|
|
buffer_info = next_buffer;
|
|
|
|
staterr = le32_to_cpu(rx_desc->wb.middle.status_error);
|
|
}
|
|
rx_ring->next_to_clean = i;
|
|
|
|
cleaned_count = E1000_DESC_UNUSED(rx_ring);
|
|
if (cleaned_count)
|
|
adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count);
|
|
|
|
adapter->total_rx_packets += total_rx_packets;
|
|
adapter->total_rx_bytes += total_rx_bytes;
|
|
adapter->net_stats.rx_bytes += total_rx_bytes;
|
|
adapter->net_stats.rx_packets += total_rx_packets;
|
|
return cleaned;
|
|
}
|
|
|
|
/**
|
|
* e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
|
|
* @adapter: address of board private structure
|
|
**/
|
|
|
|
static void
|
|
e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rx_ring,
|
|
int cleaned_count)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
struct e1000_rx_desc *rx_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
struct sk_buff *skb;
|
|
unsigned int i;
|
|
unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN;
|
|
|
|
i = rx_ring->next_to_use;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
|
|
while (cleaned_count--) {
|
|
skb = buffer_info->skb;
|
|
if (skb) {
|
|
skb_trim(skb, 0);
|
|
goto map_skb;
|
|
}
|
|
|
|
skb = netdev_alloc_skb(netdev, bufsz);
|
|
if (unlikely(!skb)) {
|
|
/* Better luck next round */
|
|
adapter->alloc_rx_buff_failed++;
|
|
break;
|
|
}
|
|
|
|
/* Fix for errata 23, can't cross 64kB boundary */
|
|
if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
|
|
struct sk_buff *oldskb = skb;
|
|
DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes "
|
|
"at %p\n", bufsz, skb->data);
|
|
/* Try again, without freeing the previous */
|
|
skb = netdev_alloc_skb(netdev, bufsz);
|
|
/* Failed allocation, critical failure */
|
|
if (!skb) {
|
|
dev_kfree_skb(oldskb);
|
|
break;
|
|
}
|
|
|
|
if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) {
|
|
/* give up */
|
|
dev_kfree_skb(skb);
|
|
dev_kfree_skb(oldskb);
|
|
break; /* while !buffer_info->skb */
|
|
}
|
|
|
|
/* Use new allocation */
|
|
dev_kfree_skb(oldskb);
|
|
}
|
|
/* Make buffer alignment 2 beyond a 16 byte boundary
|
|
* this will result in a 16 byte aligned IP header after
|
|
* the 14 byte MAC header is removed
|
|
*/
|
|
skb_reserve(skb, NET_IP_ALIGN);
|
|
|
|
buffer_info->skb = skb;
|
|
buffer_info->length = adapter->rx_buffer_len;
|
|
map_skb:
|
|
buffer_info->dma = pci_map_single(pdev,
|
|
skb->data,
|
|
adapter->rx_buffer_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
/* Fix for errata 23, can't cross 64kB boundary */
|
|
if (!e1000_check_64k_bound(adapter,
|
|
(void *)(unsigned long)buffer_info->dma,
|
|
adapter->rx_buffer_len)) {
|
|
DPRINTK(RX_ERR, ERR,
|
|
"dma align check failed: %u bytes at %p\n",
|
|
adapter->rx_buffer_len,
|
|
(void *)(unsigned long)buffer_info->dma);
|
|
dev_kfree_skb(skb);
|
|
buffer_info->skb = NULL;
|
|
|
|
pci_unmap_single(pdev, buffer_info->dma,
|
|
adapter->rx_buffer_len,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
break; /* while !buffer_info->skb */
|
|
}
|
|
rx_desc = E1000_RX_DESC(*rx_ring, i);
|
|
rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
|
|
|
|
if (unlikely(++i == rx_ring->count))
|
|
i = 0;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
}
|
|
|
|
if (likely(rx_ring->next_to_use != i)) {
|
|
rx_ring->next_to_use = i;
|
|
if (unlikely(i-- == 0))
|
|
i = (rx_ring->count - 1);
|
|
|
|
/* Force memory writes to complete before letting h/w
|
|
* know there are new descriptors to fetch. (Only
|
|
* applicable for weak-ordered memory model archs,
|
|
* such as IA-64). */
|
|
wmb();
|
|
writel(i, adapter->hw.hw_addr + rx_ring->rdt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split
|
|
* @adapter: address of board private structure
|
|
**/
|
|
|
|
static void
|
|
e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter,
|
|
struct e1000_rx_ring *rx_ring,
|
|
int cleaned_count)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct pci_dev *pdev = adapter->pdev;
|
|
union e1000_rx_desc_packet_split *rx_desc;
|
|
struct e1000_buffer *buffer_info;
|
|
struct e1000_ps_page *ps_page;
|
|
struct e1000_ps_page_dma *ps_page_dma;
|
|
struct sk_buff *skb;
|
|
unsigned int i, j;
|
|
|
|
i = rx_ring->next_to_use;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
ps_page = &rx_ring->ps_page[i];
|
|
ps_page_dma = &rx_ring->ps_page_dma[i];
|
|
|
|
while (cleaned_count--) {
|
|
rx_desc = E1000_RX_DESC_PS(*rx_ring, i);
|
|
|
|
for (j = 0; j < PS_PAGE_BUFFERS; j++) {
|
|
if (j < adapter->rx_ps_pages) {
|
|
if (likely(!ps_page->ps_page[j])) {
|
|
ps_page->ps_page[j] =
|
|
alloc_page(GFP_ATOMIC);
|
|
if (unlikely(!ps_page->ps_page[j])) {
|
|
adapter->alloc_rx_buff_failed++;
|
|
goto no_buffers;
|
|
}
|
|
ps_page_dma->ps_page_dma[j] =
|
|
pci_map_page(pdev,
|
|
ps_page->ps_page[j],
|
|
0, PAGE_SIZE,
|
|
PCI_DMA_FROMDEVICE);
|
|
}
|
|
/* Refresh the desc even if buffer_addrs didn't
|
|
* change because each write-back erases
|
|
* this info.
|
|
*/
|
|
rx_desc->read.buffer_addr[j+1] =
|
|
cpu_to_le64(ps_page_dma->ps_page_dma[j]);
|
|
} else
|
|
rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0);
|
|
}
|
|
|
|
skb = netdev_alloc_skb(netdev,
|
|
adapter->rx_ps_bsize0 + NET_IP_ALIGN);
|
|
|
|
if (unlikely(!skb)) {
|
|
adapter->alloc_rx_buff_failed++;
|
|
break;
|
|
}
|
|
|
|
/* Make buffer alignment 2 beyond a 16 byte boundary
|
|
* this will result in a 16 byte aligned IP header after
|
|
* the 14 byte MAC header is removed
|
|
*/
|
|
skb_reserve(skb, NET_IP_ALIGN);
|
|
|
|
buffer_info->skb = skb;
|
|
buffer_info->length = adapter->rx_ps_bsize0;
|
|
buffer_info->dma = pci_map_single(pdev, skb->data,
|
|
adapter->rx_ps_bsize0,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma);
|
|
|
|
if (unlikely(++i == rx_ring->count)) i = 0;
|
|
buffer_info = &rx_ring->buffer_info[i];
|
|
ps_page = &rx_ring->ps_page[i];
|
|
ps_page_dma = &rx_ring->ps_page_dma[i];
|
|
}
|
|
|
|
no_buffers:
|
|
if (likely(rx_ring->next_to_use != i)) {
|
|
rx_ring->next_to_use = i;
|
|
if (unlikely(i-- == 0)) i = (rx_ring->count - 1);
|
|
|
|
/* Force memory writes to complete before letting h/w
|
|
* know there are new descriptors to fetch. (Only
|
|
* applicable for weak-ordered memory model archs,
|
|
* such as IA-64). */
|
|
wmb();
|
|
/* Hardware increments by 16 bytes, but packet split
|
|
* descriptors are 32 bytes...so we increment tail
|
|
* twice as much.
|
|
*/
|
|
writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers.
|
|
* @adapter:
|
|
**/
|
|
|
|
static void
|
|
e1000_smartspeed(struct e1000_adapter *adapter)
|
|
{
|
|
uint16_t phy_status;
|
|
uint16_t phy_ctrl;
|
|
|
|
if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg ||
|
|
!(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL))
|
|
return;
|
|
|
|
if (adapter->smartspeed == 0) {
|
|
/* If Master/Slave config fault is asserted twice,
|
|
* we assume back-to-back */
|
|
e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
|
|
if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
|
|
e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status);
|
|
if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return;
|
|
e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
|
|
if (phy_ctrl & CR_1000T_MS_ENABLE) {
|
|
phy_ctrl &= ~CR_1000T_MS_ENABLE;
|
|
e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL,
|
|
phy_ctrl);
|
|
adapter->smartspeed++;
|
|
if (!e1000_phy_setup_autoneg(&adapter->hw) &&
|
|
!e1000_read_phy_reg(&adapter->hw, PHY_CTRL,
|
|
&phy_ctrl)) {
|
|
phy_ctrl |= (MII_CR_AUTO_NEG_EN |
|
|
MII_CR_RESTART_AUTO_NEG);
|
|
e1000_write_phy_reg(&adapter->hw, PHY_CTRL,
|
|
phy_ctrl);
|
|
}
|
|
}
|
|
return;
|
|
} else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) {
|
|
/* If still no link, perhaps using 2/3 pair cable */
|
|
e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl);
|
|
phy_ctrl |= CR_1000T_MS_ENABLE;
|
|
e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl);
|
|
if (!e1000_phy_setup_autoneg(&adapter->hw) &&
|
|
!e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) {
|
|
phy_ctrl |= (MII_CR_AUTO_NEG_EN |
|
|
MII_CR_RESTART_AUTO_NEG);
|
|
e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl);
|
|
}
|
|
}
|
|
/* Restart process after E1000_SMARTSPEED_MAX iterations */
|
|
if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX)
|
|
adapter->smartspeed = 0;
|
|
}
|
|
|
|
/**
|
|
* e1000_ioctl -
|
|
* @netdev:
|
|
* @ifreq:
|
|
* @cmd:
|
|
**/
|
|
|
|
static int
|
|
e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
|
|
{
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
case SIOCGMIIREG:
|
|
case SIOCSMIIREG:
|
|
return e1000_mii_ioctl(netdev, ifr, cmd);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* e1000_mii_ioctl -
|
|
* @netdev:
|
|
* @ifreq:
|
|
* @cmd:
|
|
**/
|
|
|
|
static int
|
|
e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
struct mii_ioctl_data *data = if_mii(ifr);
|
|
int retval;
|
|
uint16_t mii_reg;
|
|
uint16_t spddplx;
|
|
unsigned long flags;
|
|
|
|
if (adapter->hw.media_type != e1000_media_type_copper)
|
|
return -EOPNOTSUPP;
|
|
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY:
|
|
data->phy_id = adapter->hw.phy_addr;
|
|
break;
|
|
case SIOCGMIIREG:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
spin_lock_irqsave(&adapter->stats_lock, flags);
|
|
if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
|
|
&data->val_out)) {
|
|
spin_unlock_irqrestore(&adapter->stats_lock, flags);
|
|
return -EIO;
|
|
}
|
|
spin_unlock_irqrestore(&adapter->stats_lock, flags);
|
|
break;
|
|
case SIOCSMIIREG:
|
|
if (!capable(CAP_NET_ADMIN))
|
|
return -EPERM;
|
|
if (data->reg_num & ~(0x1F))
|
|
return -EFAULT;
|
|
mii_reg = data->val_in;
|
|
spin_lock_irqsave(&adapter->stats_lock, flags);
|
|
if (e1000_write_phy_reg(&adapter->hw, data->reg_num,
|
|
mii_reg)) {
|
|
spin_unlock_irqrestore(&adapter->stats_lock, flags);
|
|
return -EIO;
|
|
}
|
|
spin_unlock_irqrestore(&adapter->stats_lock, flags);
|
|
if (adapter->hw.media_type == e1000_media_type_copper) {
|
|
switch (data->reg_num) {
|
|
case PHY_CTRL:
|
|
if (mii_reg & MII_CR_POWER_DOWN)
|
|
break;
|
|
if (mii_reg & MII_CR_AUTO_NEG_EN) {
|
|
adapter->hw.autoneg = 1;
|
|
adapter->hw.autoneg_advertised = 0x2F;
|
|
} else {
|
|
if (mii_reg & 0x40)
|
|
spddplx = SPEED_1000;
|
|
else if (mii_reg & 0x2000)
|
|
spddplx = SPEED_100;
|
|
else
|
|
spddplx = SPEED_10;
|
|
spddplx += (mii_reg & 0x100)
|
|
? DUPLEX_FULL :
|
|
DUPLEX_HALF;
|
|
retval = e1000_set_spd_dplx(adapter,
|
|
spddplx);
|
|
if (retval)
|
|
return retval;
|
|
}
|
|
if (netif_running(adapter->netdev))
|
|
e1000_reinit_locked(adapter);
|
|
else
|
|
e1000_reset(adapter);
|
|
break;
|
|
case M88E1000_PHY_SPEC_CTRL:
|
|
case M88E1000_EXT_PHY_SPEC_CTRL:
|
|
if (e1000_phy_reset(&adapter->hw))
|
|
return -EIO;
|
|
break;
|
|
}
|
|
} else {
|
|
switch (data->reg_num) {
|
|
case PHY_CTRL:
|
|
if (mii_reg & MII_CR_POWER_DOWN)
|
|
break;
|
|
if (netif_running(adapter->netdev))
|
|
e1000_reinit_locked(adapter);
|
|
else
|
|
e1000_reset(adapter);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
return E1000_SUCCESS;
|
|
}
|
|
|
|
void
|
|
e1000_pci_set_mwi(struct e1000_hw *hw)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
int ret_val = pci_set_mwi(adapter->pdev);
|
|
|
|
if (ret_val)
|
|
DPRINTK(PROBE, ERR, "Error in setting MWI\n");
|
|
}
|
|
|
|
void
|
|
e1000_pci_clear_mwi(struct e1000_hw *hw)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
|
|
pci_clear_mwi(adapter->pdev);
|
|
}
|
|
|
|
int
|
|
e1000_pcix_get_mmrbc(struct e1000_hw *hw)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
return pcix_get_mmrbc(adapter->pdev);
|
|
}
|
|
|
|
void
|
|
e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc)
|
|
{
|
|
struct e1000_adapter *adapter = hw->back;
|
|
pcix_set_mmrbc(adapter->pdev, mmrbc);
|
|
}
|
|
|
|
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;
|
|
|
|
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 E1000_SUCCESS;
|
|
}
|
|
|
|
void
|
|
e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value)
|
|
{
|
|
outl(value, port);
|
|
}
|
|
|
|
static void
|
|
e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
uint32_t ctrl, rctl;
|
|
|
|
e1000_irq_disable(adapter);
|
|
adapter->vlgrp = grp;
|
|
|
|
if (grp) {
|
|
/* enable VLAN tag insert/strip */
|
|
ctrl = E1000_READ_REG(&adapter->hw, CTRL);
|
|
ctrl |= E1000_CTRL_VME;
|
|
E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
|
|
|
|
if (adapter->hw.mac_type != e1000_ich8lan) {
|
|
/* enable VLAN receive filtering */
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl |= E1000_RCTL_VFE;
|
|
rctl &= ~E1000_RCTL_CFIEN;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
e1000_update_mng_vlan(adapter);
|
|
}
|
|
} else {
|
|
/* disable VLAN tag insert/strip */
|
|
ctrl = E1000_READ_REG(&adapter->hw, CTRL);
|
|
ctrl &= ~E1000_CTRL_VME;
|
|
E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
|
|
|
|
if (adapter->hw.mac_type != e1000_ich8lan) {
|
|
/* disable VLAN filtering */
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl &= ~E1000_RCTL_VFE;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
if (adapter->mng_vlan_id !=
|
|
(uint16_t)E1000_MNG_VLAN_NONE) {
|
|
e1000_vlan_rx_kill_vid(netdev,
|
|
adapter->mng_vlan_id);
|
|
adapter->mng_vlan_id = E1000_MNG_VLAN_NONE;
|
|
}
|
|
}
|
|
}
|
|
|
|
e1000_irq_enable(adapter);
|
|
}
|
|
|
|
static void
|
|
e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
uint32_t vfta, index;
|
|
|
|
if ((adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
|
|
(vid == adapter->mng_vlan_id))
|
|
return;
|
|
/* add VID to filter table */
|
|
index = (vid >> 5) & 0x7F;
|
|
vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
|
|
vfta |= (1 << (vid & 0x1F));
|
|
e1000_write_vfta(&adapter->hw, index, vfta);
|
|
}
|
|
|
|
static void
|
|
e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
uint32_t vfta, index;
|
|
|
|
e1000_irq_disable(adapter);
|
|
vlan_group_set_device(adapter->vlgrp, vid, NULL);
|
|
e1000_irq_enable(adapter);
|
|
|
|
if ((adapter->hw.mng_cookie.status &
|
|
E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) &&
|
|
(vid == adapter->mng_vlan_id)) {
|
|
/* release control to f/w */
|
|
e1000_release_hw_control(adapter);
|
|
return;
|
|
}
|
|
|
|
/* remove VID from filter table */
|
|
index = (vid >> 5) & 0x7F;
|
|
vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index);
|
|
vfta &= ~(1 << (vid & 0x1F));
|
|
e1000_write_vfta(&adapter->hw, index, vfta);
|
|
}
|
|
|
|
static void
|
|
e1000_restore_vlan(struct e1000_adapter *adapter)
|
|
{
|
|
e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp);
|
|
|
|
if (adapter->vlgrp) {
|
|
uint16_t vid;
|
|
for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) {
|
|
if (!vlan_group_get_device(adapter->vlgrp, vid))
|
|
continue;
|
|
e1000_vlan_rx_add_vid(adapter->netdev, vid);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx)
|
|
{
|
|
adapter->hw.autoneg = 0;
|
|
|
|
/* Fiber NICs only allow 1000 gbps Full duplex */
|
|
if ((adapter->hw.media_type == e1000_media_type_fiber) &&
|
|
spddplx != (SPEED_1000 + DUPLEX_FULL)) {
|
|
DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (spddplx) {
|
|
case SPEED_10 + DUPLEX_HALF:
|
|
adapter->hw.forced_speed_duplex = e1000_10_half;
|
|
break;
|
|
case SPEED_10 + DUPLEX_FULL:
|
|
adapter->hw.forced_speed_duplex = e1000_10_full;
|
|
break;
|
|
case SPEED_100 + DUPLEX_HALF:
|
|
adapter->hw.forced_speed_duplex = e1000_100_half;
|
|
break;
|
|
case SPEED_100 + DUPLEX_FULL:
|
|
adapter->hw.forced_speed_duplex = e1000_100_full;
|
|
break;
|
|
case SPEED_1000 + DUPLEX_FULL:
|
|
adapter->hw.autoneg = 1;
|
|
adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL;
|
|
break;
|
|
case SPEED_1000 + DUPLEX_HALF: /* not supported */
|
|
default:
|
|
DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
e1000_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
uint32_t ctrl, ctrl_ext, rctl, status;
|
|
uint32_t wufc = adapter->wol;
|
|
#ifdef CONFIG_PM
|
|
int retval = 0;
|
|
#endif
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
if (netif_running(netdev)) {
|
|
WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags));
|
|
e1000_down(adapter);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
retval = pci_save_state(pdev);
|
|
if (retval)
|
|
return retval;
|
|
#endif
|
|
|
|
status = E1000_READ_REG(&adapter->hw, STATUS);
|
|
if (status & E1000_STATUS_LU)
|
|
wufc &= ~E1000_WUFC_LNKC;
|
|
|
|
if (wufc) {
|
|
e1000_setup_rctl(adapter);
|
|
e1000_set_rx_mode(netdev);
|
|
|
|
/* turn on all-multi mode if wake on multicast is enabled */
|
|
if (wufc & E1000_WUFC_MC) {
|
|
rctl = E1000_READ_REG(&adapter->hw, RCTL);
|
|
rctl |= E1000_RCTL_MPE;
|
|
E1000_WRITE_REG(&adapter->hw, RCTL, rctl);
|
|
}
|
|
|
|
if (adapter->hw.mac_type >= e1000_82540) {
|
|
ctrl = E1000_READ_REG(&adapter->hw, CTRL);
|
|
/* advertise wake from D3Cold */
|
|
#define E1000_CTRL_ADVD3WUC 0x00100000
|
|
/* phy power management enable */
|
|
#define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000
|
|
ctrl |= E1000_CTRL_ADVD3WUC |
|
|
E1000_CTRL_EN_PHY_PWR_MGMT;
|
|
E1000_WRITE_REG(&adapter->hw, CTRL, ctrl);
|
|
}
|
|
|
|
if (adapter->hw.media_type == e1000_media_type_fiber ||
|
|
adapter->hw.media_type == e1000_media_type_internal_serdes) {
|
|
/* keep the laser running in D3 */
|
|
ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT);
|
|
ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA;
|
|
E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext);
|
|
}
|
|
|
|
/* Allow time for pending master requests to run */
|
|
e1000_disable_pciex_master(&adapter->hw);
|
|
|
|
E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN);
|
|
E1000_WRITE_REG(&adapter->hw, WUFC, wufc);
|
|
pci_enable_wake(pdev, PCI_D3hot, 1);
|
|
pci_enable_wake(pdev, PCI_D3cold, 1);
|
|
} else {
|
|
E1000_WRITE_REG(&adapter->hw, WUC, 0);
|
|
E1000_WRITE_REG(&adapter->hw, WUFC, 0);
|
|
pci_enable_wake(pdev, PCI_D3hot, 0);
|
|
pci_enable_wake(pdev, PCI_D3cold, 0);
|
|
}
|
|
|
|
e1000_release_manageability(adapter);
|
|
|
|
/* make sure adapter isn't asleep if manageability is enabled */
|
|
if (adapter->en_mng_pt) {
|
|
pci_enable_wake(pdev, PCI_D3hot, 1);
|
|
pci_enable_wake(pdev, PCI_D3cold, 1);
|
|
}
|
|
|
|
if (adapter->hw.phy_type == e1000_phy_igp_3)
|
|
e1000_phy_powerdown_workaround(&adapter->hw);
|
|
|
|
if (netif_running(netdev))
|
|
e1000_free_irq(adapter);
|
|
|
|
/* Release control of h/w to f/w. If f/w is AMT enabled, this
|
|
* would have already happened in close and is redundant. */
|
|
e1000_release_hw_control(adapter);
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
pci_set_power_state(pdev, pci_choose_state(pdev, state));
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int
|
|
e1000_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
uint32_t err;
|
|
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
pci_restore_state(pdev);
|
|
if ((err = pci_enable_device(pdev))) {
|
|
printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n");
|
|
return err;
|
|
}
|
|
pci_set_master(pdev);
|
|
|
|
pci_enable_wake(pdev, PCI_D3hot, 0);
|
|
pci_enable_wake(pdev, PCI_D3cold, 0);
|
|
|
|
if (netif_running(netdev) && (err = e1000_request_irq(adapter)))
|
|
return err;
|
|
|
|
e1000_power_up_phy(adapter);
|
|
e1000_reset(adapter);
|
|
E1000_WRITE_REG(&adapter->hw, WUS, ~0);
|
|
|
|
e1000_init_manageability(adapter);
|
|
|
|
if (netif_running(netdev))
|
|
e1000_up(adapter);
|
|
|
|
netif_device_attach(netdev);
|
|
|
|
/* If the controller is 82573 and f/w is AMT, do not set
|
|
* DRV_LOAD until the interface is up. For all other cases,
|
|
* let the f/w know that the h/w is now under the control
|
|
* of the driver. */
|
|
if (adapter->hw.mac_type != e1000_82573 ||
|
|
!e1000_check_mng_mode(&adapter->hw))
|
|
e1000_get_hw_control(adapter);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static void e1000_shutdown(struct pci_dev *pdev)
|
|
{
|
|
e1000_suspend(pdev, PMSG_SUSPEND);
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
/*
|
|
* Polling 'interrupt' - used by things like netconsole to send skbs
|
|
* without having to re-enable interrupts. It's not called while
|
|
* the interrupt routine is executing.
|
|
*/
|
|
static void
|
|
e1000_netpoll(struct net_device *netdev)
|
|
{
|
|
struct e1000_adapter *adapter = netdev_priv(netdev);
|
|
|
|
disable_irq(adapter->pdev->irq);
|
|
e1000_intr(adapter->pdev->irq, netdev);
|
|
e1000_clean_tx_irq(adapter, adapter->tx_ring);
|
|
#ifndef CONFIG_E1000_NAPI
|
|
adapter->clean_rx(adapter, adapter->rx_ring);
|
|
#endif
|
|
enable_irq(adapter->pdev->irq);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* e1000_io_error_detected - called when PCI error is detected
|
|
* @pdev: Pointer to PCI device
|
|
* @state: The current pci conneection state
|
|
*
|
|
* This function is called after a PCI bus error affecting
|
|
* this device has been detected.
|
|
*/
|
|
static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
|
|
netif_device_detach(netdev);
|
|
|
|
if (netif_running(netdev))
|
|
e1000_down(adapter);
|
|
pci_disable_device(pdev);
|
|
|
|
/* Request a slot slot reset. */
|
|
return PCI_ERS_RESULT_NEED_RESET;
|
|
}
|
|
|
|
/**
|
|
* e1000_io_slot_reset - called after the pci bus has been reset.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* Restart the card from scratch, as if from a cold-boot. Implementation
|
|
* resembles the first-half of the e1000_resume routine.
|
|
*/
|
|
static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
|
|
if (pci_enable_device(pdev)) {
|
|
printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n");
|
|
return PCI_ERS_RESULT_DISCONNECT;
|
|
}
|
|
pci_set_master(pdev);
|
|
|
|
pci_enable_wake(pdev, PCI_D3hot, 0);
|
|
pci_enable_wake(pdev, PCI_D3cold, 0);
|
|
|
|
e1000_reset(adapter);
|
|
E1000_WRITE_REG(&adapter->hw, WUS, ~0);
|
|
|
|
return PCI_ERS_RESULT_RECOVERED;
|
|
}
|
|
|
|
/**
|
|
* e1000_io_resume - called when traffic can start flowing again.
|
|
* @pdev: Pointer to PCI device
|
|
*
|
|
* This callback is called when the error recovery driver tells us that
|
|
* its OK to resume normal operation. Implementation resembles the
|
|
* second-half of the e1000_resume routine.
|
|
*/
|
|
static void e1000_io_resume(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
|
struct e1000_adapter *adapter = netdev->priv;
|
|
|
|
e1000_init_manageability(adapter);
|
|
|
|
if (netif_running(netdev)) {
|
|
if (e1000_up(adapter)) {
|
|
printk("e1000: can't bring device back up after reset\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
netif_device_attach(netdev);
|
|
|
|
/* If the controller is 82573 and f/w is AMT, do not set
|
|
* DRV_LOAD until the interface is up. For all other cases,
|
|
* let the f/w know that the h/w is now under the control
|
|
* of the driver. */
|
|
if (adapter->hw.mac_type != e1000_82573 ||
|
|
!e1000_check_mng_mode(&adapter->hw))
|
|
e1000_get_hw_control(adapter);
|
|
|
|
}
|
|
|
|
/* e1000_main.c */
|