mirror of https://gitee.com/openkylin/linux.git
1180 lines
32 KiB
C
1180 lines
32 KiB
C
/*******************************************************************************
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Intel 10 Gigabit PCI Express Linux driver
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Copyright(c) 1999 - 2007 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 <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include "ixgbe_common.h"
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#include "ixgbe_phy.h"
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static s32 ixgbe_clear_hw_cntrs(struct ixgbe_hw *hw);
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static s32 ixgbe_poll_eeprom_eerd_done(struct ixgbe_hw *hw);
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static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw);
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static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw);
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static u16 ixgbe_calc_eeprom_checksum(struct ixgbe_hw *hw);
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static s32 ixgbe_clear_vfta(struct ixgbe_hw *hw);
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static s32 ixgbe_init_rx_addrs(struct ixgbe_hw *hw);
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static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
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static void ixgbe_add_mc_addr(struct ixgbe_hw *hw, u8 *mc_addr);
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/**
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* ixgbe_start_hw - Prepare hardware for TX/RX
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* @hw: pointer to hardware structure
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*
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* Starts the hardware by filling the bus info structure and media type, clears
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* all on chip counters, initializes receive address registers, multicast
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* table, VLAN filter table, calls routine to set up link and flow control
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* settings, and leaves transmit and receive units disabled and uninitialized
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**/
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s32 ixgbe_start_hw(struct ixgbe_hw *hw)
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{
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u32 ctrl_ext;
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/* Set the media type */
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hw->phy.media_type = hw->mac.ops.get_media_type(hw);
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/* Identify the PHY */
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ixgbe_identify_phy(hw);
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/*
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* Store MAC address from RAR0, clear receive address registers, and
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* clear the multicast table
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*/
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ixgbe_init_rx_addrs(hw);
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/* Clear the VLAN filter table */
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ixgbe_clear_vfta(hw);
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/* Set up link */
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hw->mac.ops.setup_link(hw);
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/* Clear statistics registers */
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ixgbe_clear_hw_cntrs(hw);
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/* Set No Snoop Disable */
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ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
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ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
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IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
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IXGBE_WRITE_FLUSH(hw);
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/* Clear adapter stopped flag */
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hw->adapter_stopped = false;
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return 0;
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}
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/**
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* ixgbe_init_hw - Generic hardware initialization
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* @hw: pointer to hardware structure
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*
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* Initialize the hardware by reseting the hardware, filling the bus info
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* structure and media type, clears all on chip counters, initializes receive
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* address registers, multicast table, VLAN filter table, calls routine to set
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* up link and flow control settings, and leaves transmit and receive units
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* disabled and uninitialized
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**/
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s32 ixgbe_init_hw(struct ixgbe_hw *hw)
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{
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/* Reset the hardware */
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hw->mac.ops.reset(hw);
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/* Start the HW */
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ixgbe_start_hw(hw);
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return 0;
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}
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/**
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* ixgbe_clear_hw_cntrs - Generic clear hardware counters
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* @hw: pointer to hardware structure
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*
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* Clears all hardware statistics counters by reading them from the hardware
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* Statistics counters are clear on read.
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**/
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static s32 ixgbe_clear_hw_cntrs(struct ixgbe_hw *hw)
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{
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u16 i = 0;
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IXGBE_READ_REG(hw, IXGBE_CRCERRS);
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IXGBE_READ_REG(hw, IXGBE_ILLERRC);
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IXGBE_READ_REG(hw, IXGBE_ERRBC);
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IXGBE_READ_REG(hw, IXGBE_MSPDC);
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for (i = 0; i < 8; i++)
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IXGBE_READ_REG(hw, IXGBE_MPC(i));
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IXGBE_READ_REG(hw, IXGBE_MLFC);
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IXGBE_READ_REG(hw, IXGBE_MRFC);
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IXGBE_READ_REG(hw, IXGBE_RLEC);
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IXGBE_READ_REG(hw, IXGBE_LXONTXC);
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IXGBE_READ_REG(hw, IXGBE_LXONRXC);
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IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
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IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
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for (i = 0; i < 8; i++) {
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IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
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IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
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IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
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IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
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}
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IXGBE_READ_REG(hw, IXGBE_PRC64);
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IXGBE_READ_REG(hw, IXGBE_PRC127);
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IXGBE_READ_REG(hw, IXGBE_PRC255);
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IXGBE_READ_REG(hw, IXGBE_PRC511);
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IXGBE_READ_REG(hw, IXGBE_PRC1023);
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IXGBE_READ_REG(hw, IXGBE_PRC1522);
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IXGBE_READ_REG(hw, IXGBE_GPRC);
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IXGBE_READ_REG(hw, IXGBE_BPRC);
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IXGBE_READ_REG(hw, IXGBE_MPRC);
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IXGBE_READ_REG(hw, IXGBE_GPTC);
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IXGBE_READ_REG(hw, IXGBE_GORCL);
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IXGBE_READ_REG(hw, IXGBE_GORCH);
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IXGBE_READ_REG(hw, IXGBE_GOTCL);
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IXGBE_READ_REG(hw, IXGBE_GOTCH);
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for (i = 0; i < 8; i++)
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IXGBE_READ_REG(hw, IXGBE_RNBC(i));
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IXGBE_READ_REG(hw, IXGBE_RUC);
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IXGBE_READ_REG(hw, IXGBE_RFC);
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IXGBE_READ_REG(hw, IXGBE_ROC);
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IXGBE_READ_REG(hw, IXGBE_RJC);
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IXGBE_READ_REG(hw, IXGBE_MNGPRC);
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IXGBE_READ_REG(hw, IXGBE_MNGPDC);
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IXGBE_READ_REG(hw, IXGBE_MNGPTC);
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IXGBE_READ_REG(hw, IXGBE_TORL);
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IXGBE_READ_REG(hw, IXGBE_TORH);
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IXGBE_READ_REG(hw, IXGBE_TPR);
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IXGBE_READ_REG(hw, IXGBE_TPT);
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IXGBE_READ_REG(hw, IXGBE_PTC64);
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IXGBE_READ_REG(hw, IXGBE_PTC127);
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IXGBE_READ_REG(hw, IXGBE_PTC255);
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IXGBE_READ_REG(hw, IXGBE_PTC511);
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IXGBE_READ_REG(hw, IXGBE_PTC1023);
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IXGBE_READ_REG(hw, IXGBE_PTC1522);
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IXGBE_READ_REG(hw, IXGBE_MPTC);
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IXGBE_READ_REG(hw, IXGBE_BPTC);
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for (i = 0; i < 16; i++) {
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IXGBE_READ_REG(hw, IXGBE_QPRC(i));
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IXGBE_READ_REG(hw, IXGBE_QBRC(i));
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IXGBE_READ_REG(hw, IXGBE_QPTC(i));
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IXGBE_READ_REG(hw, IXGBE_QBTC(i));
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}
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return 0;
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}
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/**
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* ixgbe_get_mac_addr - Generic get MAC address
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* @hw: pointer to hardware structure
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* @mac_addr: Adapter MAC address
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*
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* Reads the adapter's MAC address from first Receive Address Register (RAR0)
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* A reset of the adapter must be performed prior to calling this function
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* in order for the MAC address to have been loaded from the EEPROM into RAR0
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**/
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s32 ixgbe_get_mac_addr(struct ixgbe_hw *hw, u8 *mac_addr)
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{
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u32 rar_high;
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u32 rar_low;
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u16 i;
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rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
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rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
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for (i = 0; i < 4; i++)
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mac_addr[i] = (u8)(rar_low >> (i*8));
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for (i = 0; i < 2; i++)
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mac_addr[i+4] = (u8)(rar_high >> (i*8));
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return 0;
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}
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s32 ixgbe_read_part_num(struct ixgbe_hw *hw, u32 *part_num)
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{
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s32 ret_val;
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u16 data;
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ret_val = ixgbe_read_eeprom(hw, IXGBE_PBANUM0_PTR, &data);
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if (ret_val) {
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hw_dbg(hw, "NVM Read Error\n");
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return ret_val;
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}
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*part_num = (u32)(data << 16);
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ret_val = ixgbe_read_eeprom(hw, IXGBE_PBANUM1_PTR, &data);
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if (ret_val) {
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hw_dbg(hw, "NVM Read Error\n");
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return ret_val;
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}
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*part_num |= data;
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return 0;
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}
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/**
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* ixgbe_stop_adapter - Generic stop TX/RX units
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* @hw: pointer to hardware structure
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*
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* Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
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* disables transmit and receive units. The adapter_stopped flag is used by
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* the shared code and drivers to determine if the adapter is in a stopped
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* state and should not touch the hardware.
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**/
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s32 ixgbe_stop_adapter(struct ixgbe_hw *hw)
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{
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u32 number_of_queues;
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u32 reg_val;
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u16 i;
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/*
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* Set the adapter_stopped flag so other driver functions stop touching
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* the hardware
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*/
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hw->adapter_stopped = true;
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/* Disable the receive unit */
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reg_val = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
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reg_val &= ~(IXGBE_RXCTRL_RXEN);
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IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg_val);
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msleep(2);
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/* Clear interrupt mask to stop from interrupts being generated */
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IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
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/* Clear any pending interrupts */
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IXGBE_READ_REG(hw, IXGBE_EICR);
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/* Disable the transmit unit. Each queue must be disabled. */
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number_of_queues = hw->mac.num_tx_queues;
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for (i = 0; i < number_of_queues; i++) {
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reg_val = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
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if (reg_val & IXGBE_TXDCTL_ENABLE) {
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reg_val &= ~IXGBE_TXDCTL_ENABLE;
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IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), reg_val);
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}
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}
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return 0;
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}
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/**
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* ixgbe_led_on - Turns on the software controllable LEDs.
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* @hw: pointer to hardware structure
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* @index: led number to turn on
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**/
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s32 ixgbe_led_on(struct ixgbe_hw *hw, u32 index)
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{
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u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
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/* To turn on the LED, set mode to ON. */
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led_reg &= ~IXGBE_LED_MODE_MASK(index);
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led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
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IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
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IXGBE_WRITE_FLUSH(hw);
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return 0;
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}
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/**
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* ixgbe_led_off - Turns off the software controllable LEDs.
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* @hw: pointer to hardware structure
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* @index: led number to turn off
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**/
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s32 ixgbe_led_off(struct ixgbe_hw *hw, u32 index)
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{
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u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
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/* To turn off the LED, set mode to OFF. */
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led_reg &= ~IXGBE_LED_MODE_MASK(index);
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led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
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IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
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IXGBE_WRITE_FLUSH(hw);
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return 0;
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}
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/**
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* ixgbe_init_eeprom - Initialize EEPROM params
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* @hw: pointer to hardware structure
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*
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* Initializes the EEPROM parameters ixgbe_eeprom_info within the
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* ixgbe_hw struct in order to set up EEPROM access.
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**/
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s32 ixgbe_init_eeprom(struct ixgbe_hw *hw)
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{
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struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
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u32 eec;
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u16 eeprom_size;
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if (eeprom->type == ixgbe_eeprom_uninitialized) {
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eeprom->type = ixgbe_eeprom_none;
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/*
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* Check for EEPROM present first.
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* If not present leave as none
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*/
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eec = IXGBE_READ_REG(hw, IXGBE_EEC);
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if (eec & IXGBE_EEC_PRES) {
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eeprom->type = ixgbe_eeprom_spi;
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/*
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* SPI EEPROM is assumed here. This code would need to
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* change if a future EEPROM is not SPI.
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*/
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eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
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IXGBE_EEC_SIZE_SHIFT);
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eeprom->word_size = 1 << (eeprom_size +
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IXGBE_EEPROM_WORD_SIZE_SHIFT);
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}
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if (eec & IXGBE_EEC_ADDR_SIZE)
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eeprom->address_bits = 16;
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else
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eeprom->address_bits = 8;
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hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
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"%d\n", eeprom->type, eeprom->word_size,
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eeprom->address_bits);
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}
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return 0;
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}
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/**
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* ixgbe_read_eeprom - Read EEPROM word using EERD
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* @hw: pointer to hardware structure
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* @offset: offset of word in the EEPROM to read
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* @data: word read from the EEPROM
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*
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* Reads a 16 bit word from the EEPROM using the EERD register.
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**/
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s32 ixgbe_read_eeprom(struct ixgbe_hw *hw, u16 offset, u16 *data)
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{
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u32 eerd;
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s32 status;
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eerd = (offset << IXGBE_EEPROM_READ_ADDR_SHIFT) +
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IXGBE_EEPROM_READ_REG_START;
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IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
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status = ixgbe_poll_eeprom_eerd_done(hw);
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if (status == 0)
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*data = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
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IXGBE_EEPROM_READ_REG_DATA);
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else
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hw_dbg(hw, "Eeprom read timed out\n");
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return status;
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}
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/**
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* ixgbe_poll_eeprom_eerd_done - Poll EERD status
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* @hw: pointer to hardware structure
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*
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* Polls the status bit (bit 1) of the EERD to determine when the read is done.
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**/
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static s32 ixgbe_poll_eeprom_eerd_done(struct ixgbe_hw *hw)
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{
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u32 i;
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u32 reg;
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s32 status = IXGBE_ERR_EEPROM;
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for (i = 0; i < IXGBE_EERD_ATTEMPTS; i++) {
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reg = IXGBE_READ_REG(hw, IXGBE_EERD);
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if (reg & IXGBE_EEPROM_READ_REG_DONE) {
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status = 0;
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break;
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}
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udelay(5);
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}
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return status;
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}
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/**
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* ixgbe_get_eeprom_semaphore - Get hardware semaphore
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* @hw: pointer to hardware structure
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*
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* Sets the hardware semaphores so EEPROM access can occur for bit-bang method
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**/
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static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
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{
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s32 status = IXGBE_ERR_EEPROM;
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u32 timeout;
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u32 i;
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u32 swsm;
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/* Set timeout value based on size of EEPROM */
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timeout = hw->eeprom.word_size + 1;
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/* Get SMBI software semaphore between device drivers first */
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for (i = 0; i < timeout; i++) {
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/*
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* If the SMBI bit is 0 when we read it, then the bit will be
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* set and we have the semaphore
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*/
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swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
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if (!(swsm & IXGBE_SWSM_SMBI)) {
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status = 0;
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break;
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}
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msleep(1);
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}
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/* Now get the semaphore between SW/FW through the SWESMBI bit */
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if (status == 0) {
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for (i = 0; i < timeout; i++) {
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swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
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/* Set the SW EEPROM semaphore bit to request access */
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swsm |= IXGBE_SWSM_SWESMBI;
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IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
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/*
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* If we set the bit successfully then we got the
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* semaphore.
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*/
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|
swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
|
|
if (swsm & IXGBE_SWSM_SWESMBI)
|
|
break;
|
|
|
|
udelay(50);
|
|
}
|
|
|
|
/*
|
|
* Release semaphores and return error if SW EEPROM semaphore
|
|
* was not granted because we don't have access to the EEPROM
|
|
*/
|
|
if (i >= timeout) {
|
|
hw_dbg(hw, "Driver can't access the Eeprom - Semaphore "
|
|
"not granted.\n");
|
|
ixgbe_release_eeprom_semaphore(hw);
|
|
status = IXGBE_ERR_EEPROM;
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_release_eeprom_semaphore - Release hardware semaphore
|
|
* @hw: pointer to hardware structure
|
|
*
|
|
* This function clears hardware semaphore bits.
|
|
**/
|
|
static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
|
|
{
|
|
u32 swsm;
|
|
|
|
swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
|
|
|
|
/* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
|
|
swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
|
|
IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
|
|
IXGBE_WRITE_FLUSH(hw);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_calc_eeprom_checksum - Calculates and returns the checksum
|
|
* @hw: pointer to hardware structure
|
|
**/
|
|
static u16 ixgbe_calc_eeprom_checksum(struct ixgbe_hw *hw)
|
|
{
|
|
u16 i;
|
|
u16 j;
|
|
u16 checksum = 0;
|
|
u16 length = 0;
|
|
u16 pointer = 0;
|
|
u16 word = 0;
|
|
|
|
/* Include 0x0-0x3F in the checksum */
|
|
for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
|
|
if (ixgbe_read_eeprom(hw, i, &word) != 0) {
|
|
hw_dbg(hw, "EEPROM read failed\n");
|
|
break;
|
|
}
|
|
checksum += word;
|
|
}
|
|
|
|
/* Include all data from pointers except for the fw pointer */
|
|
for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
|
|
ixgbe_read_eeprom(hw, i, &pointer);
|
|
|
|
/* Make sure the pointer seems valid */
|
|
if (pointer != 0xFFFF && pointer != 0) {
|
|
ixgbe_read_eeprom(hw, pointer, &length);
|
|
|
|
if (length != 0xFFFF && length != 0) {
|
|
for (j = pointer+1; j <= pointer+length; j++) {
|
|
ixgbe_read_eeprom(hw, j, &word);
|
|
checksum += word;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
checksum = (u16)IXGBE_EEPROM_SUM - checksum;
|
|
|
|
return checksum;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_validate_eeprom_checksum - Validate EEPROM checksum
|
|
* @hw: pointer to hardware structure
|
|
* @checksum_val: calculated checksum
|
|
*
|
|
* Performs checksum calculation and validates the EEPROM checksum. If the
|
|
* caller does not need checksum_val, the value can be NULL.
|
|
**/
|
|
s32 ixgbe_validate_eeprom_checksum(struct ixgbe_hw *hw, u16 *checksum_val)
|
|
{
|
|
s32 status;
|
|
u16 checksum;
|
|
u16 read_checksum = 0;
|
|
|
|
/*
|
|
* Read the first word from the EEPROM. If this times out or fails, do
|
|
* not continue or we could be in for a very long wait while every
|
|
* EEPROM read fails
|
|
*/
|
|
status = ixgbe_read_eeprom(hw, 0, &checksum);
|
|
|
|
if (status == 0) {
|
|
checksum = ixgbe_calc_eeprom_checksum(hw);
|
|
|
|
ixgbe_read_eeprom(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
|
|
|
|
/*
|
|
* Verify read checksum from EEPROM is the same as
|
|
* calculated checksum
|
|
*/
|
|
if (read_checksum != checksum)
|
|
status = IXGBE_ERR_EEPROM_CHECKSUM;
|
|
|
|
/* If the user cares, return the calculated checksum */
|
|
if (checksum_val)
|
|
*checksum_val = checksum;
|
|
} else {
|
|
hw_dbg(hw, "EEPROM read failed\n");
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_validate_mac_addr - Validate MAC address
|
|
* @mac_addr: pointer to MAC address.
|
|
*
|
|
* Tests a MAC address to ensure it is a valid Individual Address
|
|
**/
|
|
s32 ixgbe_validate_mac_addr(u8 *mac_addr)
|
|
{
|
|
s32 status = 0;
|
|
|
|
/* Make sure it is not a multicast address */
|
|
if (IXGBE_IS_MULTICAST(mac_addr))
|
|
status = IXGBE_ERR_INVALID_MAC_ADDR;
|
|
/* Not a broadcast address */
|
|
else if (IXGBE_IS_BROADCAST(mac_addr))
|
|
status = IXGBE_ERR_INVALID_MAC_ADDR;
|
|
/* Reject the zero address */
|
|
else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 &&
|
|
mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0)
|
|
status = IXGBE_ERR_INVALID_MAC_ADDR;
|
|
|
|
return status;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_set_rar - Set RX address register
|
|
* @hw: pointer to hardware structure
|
|
* @addr: Address to put into receive address register
|
|
* @index: Receive address register to write
|
|
* @vind: Vind to set RAR to
|
|
* @enable_addr: set flag that address is active
|
|
*
|
|
* Puts an ethernet address into a receive address register.
|
|
**/
|
|
s32 ixgbe_set_rar(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vind,
|
|
u32 enable_addr)
|
|
{
|
|
u32 rar_low, rar_high;
|
|
|
|
/*
|
|
* HW expects these in little endian so we reverse the byte order from
|
|
* network order (big endian) to little endian
|
|
*/
|
|
rar_low = ((u32)addr[0] |
|
|
((u32)addr[1] << 8) |
|
|
((u32)addr[2] << 16) |
|
|
((u32)addr[3] << 24));
|
|
|
|
rar_high = ((u32)addr[4] |
|
|
((u32)addr[5] << 8) |
|
|
((vind << IXGBE_RAH_VIND_SHIFT) & IXGBE_RAH_VIND_MASK));
|
|
|
|
if (enable_addr != 0)
|
|
rar_high |= IXGBE_RAH_AV;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
|
|
IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_init_rx_addrs - Initializes receive address filters.
|
|
* @hw: pointer to hardware structure
|
|
*
|
|
* Places the MAC address in receive address register 0 and clears the rest
|
|
* of the receive addresss registers. Clears the multicast table. Assumes
|
|
* the receiver is in reset when the routine is called.
|
|
**/
|
|
static s32 ixgbe_init_rx_addrs(struct ixgbe_hw *hw)
|
|
{
|
|
u32 i;
|
|
u32 rar_entries = hw->mac.num_rx_addrs;
|
|
|
|
/*
|
|
* If the current mac address is valid, assume it is a software override
|
|
* to the permanent address.
|
|
* Otherwise, use the permanent address from the eeprom.
|
|
*/
|
|
if (ixgbe_validate_mac_addr(hw->mac.addr) ==
|
|
IXGBE_ERR_INVALID_MAC_ADDR) {
|
|
/* Get the MAC address from the RAR0 for later reference */
|
|
ixgbe_get_mac_addr(hw, hw->mac.addr);
|
|
|
|
hw_dbg(hw, " Keeping Current RAR0 Addr =%.2X %.2X %.2X ",
|
|
hw->mac.addr[0], hw->mac.addr[1],
|
|
hw->mac.addr[2]);
|
|
hw_dbg(hw, "%.2X %.2X %.2X\n", hw->mac.addr[3],
|
|
hw->mac.addr[4], hw->mac.addr[5]);
|
|
} else {
|
|
/* Setup the receive address. */
|
|
hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
|
|
hw_dbg(hw, " New MAC Addr =%.2X %.2X %.2X ",
|
|
hw->mac.addr[0], hw->mac.addr[1],
|
|
hw->mac.addr[2]);
|
|
hw_dbg(hw, "%.2X %.2X %.2X\n", hw->mac.addr[3],
|
|
hw->mac.addr[4], hw->mac.addr[5]);
|
|
|
|
ixgbe_set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
|
|
}
|
|
|
|
hw->addr_ctrl.rar_used_count = 1;
|
|
|
|
/* Zero out the other receive addresses. */
|
|
hw_dbg(hw, "Clearing RAR[1-15]\n");
|
|
for (i = 1; i < rar_entries; i++) {
|
|
IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
|
|
IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
|
|
}
|
|
|
|
/* Clear the MTA */
|
|
hw->addr_ctrl.mc_addr_in_rar_count = 0;
|
|
hw->addr_ctrl.mta_in_use = 0;
|
|
IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
|
|
|
|
hw_dbg(hw, " Clearing MTA\n");
|
|
for (i = 0; i < IXGBE_MC_TBL_SIZE; i++)
|
|
IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_mta_vector - Determines bit-vector in multicast table to set
|
|
* @hw: pointer to hardware structure
|
|
* @mc_addr: the multicast address
|
|
*
|
|
* Extracts the 12 bits, from a multicast address, to determine which
|
|
* bit-vector to set in the multicast table. The hardware uses 12 bits, from
|
|
* incoming rx multicast addresses, to determine the bit-vector to check in
|
|
* the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
|
|
* by the MO field of the MCSTCTRL. The MO field is set during initalization
|
|
* to mc_filter_type.
|
|
**/
|
|
static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
|
|
{
|
|
u32 vector = 0;
|
|
|
|
switch (hw->mac.mc_filter_type) {
|
|
case 0: /* use bits [47:36] of the address */
|
|
vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
|
|
break;
|
|
case 1: /* use bits [46:35] of the address */
|
|
vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
|
|
break;
|
|
case 2: /* use bits [45:34] of the address */
|
|
vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
|
|
break;
|
|
case 3: /* use bits [43:32] of the address */
|
|
vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
|
|
break;
|
|
default: /* Invalid mc_filter_type */
|
|
hw_dbg(hw, "MC filter type param set incorrectly\n");
|
|
break;
|
|
}
|
|
|
|
/* vector can only be 12-bits or boundary will be exceeded */
|
|
vector &= 0xFFF;
|
|
return vector;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_set_mta - Set bit-vector in multicast table
|
|
* @hw: pointer to hardware structure
|
|
* @hash_value: Multicast address hash value
|
|
*
|
|
* Sets the bit-vector in the multicast table.
|
|
**/
|
|
static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
|
|
{
|
|
u32 vector;
|
|
u32 vector_bit;
|
|
u32 vector_reg;
|
|
u32 mta_reg;
|
|
|
|
hw->addr_ctrl.mta_in_use++;
|
|
|
|
vector = ixgbe_mta_vector(hw, mc_addr);
|
|
hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
|
|
|
|
/*
|
|
* The MTA is a register array of 128 32-bit registers. It is treated
|
|
* like an array of 4096 bits. We want to set bit
|
|
* BitArray[vector_value]. So we figure out what register the bit is
|
|
* in, read it, OR in the new bit, then write back the new value. The
|
|
* register is determined by the upper 7 bits of the vector value and
|
|
* the bit within that register are determined by the lower 5 bits of
|
|
* the value.
|
|
*/
|
|
vector_reg = (vector >> 5) & 0x7F;
|
|
vector_bit = vector & 0x1F;
|
|
mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
|
|
mta_reg |= (1 << vector_bit);
|
|
IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_add_mc_addr - Adds a multicast address.
|
|
* @hw: pointer to hardware structure
|
|
* @mc_addr: new multicast address
|
|
*
|
|
* Adds it to unused receive address register or to the multicast table.
|
|
**/
|
|
static void ixgbe_add_mc_addr(struct ixgbe_hw *hw, u8 *mc_addr)
|
|
{
|
|
u32 rar_entries = hw->mac.num_rx_addrs;
|
|
|
|
hw_dbg(hw, " MC Addr =%.2X %.2X %.2X %.2X %.2X %.2X\n",
|
|
mc_addr[0], mc_addr[1], mc_addr[2],
|
|
mc_addr[3], mc_addr[4], mc_addr[5]);
|
|
|
|
/*
|
|
* Place this multicast address in the RAR if there is room,
|
|
* else put it in the MTA
|
|
*/
|
|
if (hw->addr_ctrl.rar_used_count < rar_entries) {
|
|
ixgbe_set_rar(hw, hw->addr_ctrl.rar_used_count,
|
|
mc_addr, 0, IXGBE_RAH_AV);
|
|
hw_dbg(hw, "Added a multicast address to RAR[%d]\n",
|
|
hw->addr_ctrl.rar_used_count);
|
|
hw->addr_ctrl.rar_used_count++;
|
|
hw->addr_ctrl.mc_addr_in_rar_count++;
|
|
} else {
|
|
ixgbe_set_mta(hw, mc_addr);
|
|
}
|
|
|
|
hw_dbg(hw, "ixgbe_add_mc_addr Complete\n");
|
|
}
|
|
|
|
/**
|
|
* ixgbe_update_mc_addr_list - Updates MAC list of multicast addresses
|
|
* @hw: pointer to hardware structure
|
|
* @mc_addr_list: the list of new multicast addresses
|
|
* @mc_addr_count: number of addresses
|
|
* @pad: number of bytes between addresses in the list
|
|
*
|
|
* The given list replaces any existing list. Clears the MC addrs from receive
|
|
* address registers and the multicast table. Uses unsed receive address
|
|
* registers for the first multicast addresses, and hashes the rest into the
|
|
* multicast table.
|
|
**/
|
|
s32 ixgbe_update_mc_addr_list(struct ixgbe_hw *hw, u8 *mc_addr_list,
|
|
u32 mc_addr_count, u32 pad)
|
|
{
|
|
u32 i;
|
|
u32 rar_entries = hw->mac.num_rx_addrs;
|
|
|
|
/*
|
|
* Set the new number of MC addresses that we are being requested to
|
|
* use.
|
|
*/
|
|
hw->addr_ctrl.num_mc_addrs = mc_addr_count;
|
|
hw->addr_ctrl.rar_used_count -= hw->addr_ctrl.mc_addr_in_rar_count;
|
|
hw->addr_ctrl.mc_addr_in_rar_count = 0;
|
|
hw->addr_ctrl.mta_in_use = 0;
|
|
|
|
/* Zero out the other receive addresses. */
|
|
hw_dbg(hw, "Clearing RAR[1-15]\n");
|
|
for (i = hw->addr_ctrl.rar_used_count; i < rar_entries; i++) {
|
|
IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
|
|
IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
|
|
}
|
|
|
|
/* Clear the MTA */
|
|
hw_dbg(hw, " Clearing MTA\n");
|
|
for (i = 0; i < IXGBE_MC_TBL_SIZE; i++)
|
|
IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
|
|
|
|
/* Add the new addresses */
|
|
for (i = 0; i < mc_addr_count; i++) {
|
|
hw_dbg(hw, " Adding the multicast addresses:\n");
|
|
ixgbe_add_mc_addr(hw, mc_addr_list +
|
|
(i * (IXGBE_ETH_LENGTH_OF_ADDRESS + pad)));
|
|
}
|
|
|
|
/* Enable mta */
|
|
if (hw->addr_ctrl.mta_in_use > 0)
|
|
IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
|
|
IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
|
|
|
|
hw_dbg(hw, "ixgbe_update_mc_addr_list Complete\n");
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_clear_vfta - Clear VLAN filter table
|
|
* @hw: pointer to hardware structure
|
|
*
|
|
* Clears the VLAN filer table, and the VMDq index associated with the filter
|
|
**/
|
|
static s32 ixgbe_clear_vfta(struct ixgbe_hw *hw)
|
|
{
|
|
u32 offset;
|
|
u32 vlanbyte;
|
|
|
|
for (offset = 0; offset < IXGBE_VLAN_FILTER_TBL_SIZE; offset++)
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
|
|
|
|
for (vlanbyte = 0; vlanbyte < 4; vlanbyte++)
|
|
for (offset = 0; offset < IXGBE_VLAN_FILTER_TBL_SIZE; offset++)
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vlanbyte, offset),
|
|
0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_set_vfta - Set VLAN filter table
|
|
* @hw: pointer to hardware structure
|
|
* @vlan: VLAN id to write to VLAN filter
|
|
* @vind: VMDq output index that maps queue to VLAN id in VFTA
|
|
* @vlan_on: boolean flag to turn on/off VLAN in VFTA
|
|
*
|
|
* Turn on/off specified VLAN in the VLAN filter table.
|
|
**/
|
|
s32 ixgbe_set_vfta(struct ixgbe_hw *hw, u32 vlan, u32 vind,
|
|
bool vlan_on)
|
|
{
|
|
u32 VftaIndex;
|
|
u32 BitOffset;
|
|
u32 VftaReg;
|
|
u32 VftaByte;
|
|
|
|
/* Determine 32-bit word position in array */
|
|
VftaIndex = (vlan >> 5) & 0x7F; /* upper seven bits */
|
|
|
|
/* Determine the location of the (VMD) queue index */
|
|
VftaByte = ((vlan >> 3) & 0x03); /* bits (4:3) indicating byte array */
|
|
BitOffset = (vlan & 0x7) << 2; /* lower 3 bits indicate nibble */
|
|
|
|
/* Set the nibble for VMD queue index */
|
|
VftaReg = IXGBE_READ_REG(hw, IXGBE_VFTAVIND(VftaByte, VftaIndex));
|
|
VftaReg &= (~(0x0F << BitOffset));
|
|
VftaReg |= (vind << BitOffset);
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(VftaByte, VftaIndex), VftaReg);
|
|
|
|
/* Determine the location of the bit for this VLAN id */
|
|
BitOffset = vlan & 0x1F; /* lower five bits */
|
|
|
|
VftaReg = IXGBE_READ_REG(hw, IXGBE_VFTA(VftaIndex));
|
|
if (vlan_on)
|
|
/* Turn on this VLAN id */
|
|
VftaReg |= (1 << BitOffset);
|
|
else
|
|
/* Turn off this VLAN id */
|
|
VftaReg &= ~(1 << BitOffset);
|
|
IXGBE_WRITE_REG(hw, IXGBE_VFTA(VftaIndex), VftaReg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_setup_fc - Configure flow control settings
|
|
* @hw: pointer to hardware structure
|
|
* @packetbuf_num: packet buffer number (0-7)
|
|
*
|
|
* Configures the flow control settings based on SW configuration.
|
|
* This function is used for 802.3x flow control configuration only.
|
|
**/
|
|
s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num)
|
|
{
|
|
u32 frctl_reg;
|
|
u32 rmcs_reg;
|
|
|
|
if (packetbuf_num < 0 || packetbuf_num > 7)
|
|
hw_dbg(hw, "Invalid packet buffer number [%d], expected range "
|
|
"is 0-7\n", packetbuf_num);
|
|
|
|
frctl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
|
|
frctl_reg &= ~(IXGBE_FCTRL_RFCE | IXGBE_FCTRL_RPFCE);
|
|
|
|
rmcs_reg = IXGBE_READ_REG(hw, IXGBE_RMCS);
|
|
rmcs_reg &= ~(IXGBE_RMCS_TFCE_PRIORITY | IXGBE_RMCS_TFCE_802_3X);
|
|
|
|
/*
|
|
* We want to save off the original Flow Control configuration just in
|
|
* case we get disconnected and then reconnected into a different hub
|
|
* or switch with different Flow Control capabilities.
|
|
*/
|
|
hw->fc.type = hw->fc.original_type;
|
|
|
|
/*
|
|
* The possible values of the "flow_control" parameter are:
|
|
* 0: Flow control is completely disabled
|
|
* 1: Rx flow control is enabled (we can receive pause frames but not
|
|
* send pause frames).
|
|
* 2: Tx flow control is enabled (we can send pause frames but we do not
|
|
* support receiving pause frames)
|
|
* 3: Both Rx and TX flow control (symmetric) are enabled.
|
|
* other: Invalid.
|
|
*/
|
|
switch (hw->fc.type) {
|
|
case ixgbe_fc_none:
|
|
break;
|
|
case ixgbe_fc_rx_pause:
|
|
/*
|
|
* RX Flow control is enabled,
|
|
* and TX Flow control is disabled.
|
|
*/
|
|
frctl_reg |= IXGBE_FCTRL_RFCE;
|
|
break;
|
|
case ixgbe_fc_tx_pause:
|
|
/*
|
|
* TX Flow control is enabled, and RX Flow control is disabled,
|
|
* by a software over-ride.
|
|
*/
|
|
rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
|
|
break;
|
|
case ixgbe_fc_full:
|
|
/*
|
|
* Flow control (both RX and TX) is enabled by a software
|
|
* over-ride.
|
|
*/
|
|
frctl_reg |= IXGBE_FCTRL_RFCE;
|
|
rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
|
|
break;
|
|
default:
|
|
/* We should never get here. The value should be 0-3. */
|
|
hw_dbg(hw, "Flow control param set incorrectly\n");
|
|
break;
|
|
}
|
|
|
|
/* Enable 802.3x based flow control settings. */
|
|
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, frctl_reg);
|
|
IXGBE_WRITE_REG(hw, IXGBE_RMCS, rmcs_reg);
|
|
|
|
/*
|
|
* We need to set up the Receive Threshold high and low water
|
|
* marks as well as (optionally) enabling the transmission of
|
|
* XON frames.
|
|
*/
|
|
if (hw->fc.type & ixgbe_fc_tx_pause) {
|
|
if (hw->fc.send_xon) {
|
|
IXGBE_WRITE_REG(hw, IXGBE_FCRTL(packetbuf_num),
|
|
(hw->fc.low_water | IXGBE_FCRTL_XONE));
|
|
} else {
|
|
IXGBE_WRITE_REG(hw, IXGBE_FCRTL(packetbuf_num),
|
|
hw->fc.low_water);
|
|
}
|
|
IXGBE_WRITE_REG(hw, IXGBE_FCRTH(packetbuf_num),
|
|
(hw->fc.high_water)|IXGBE_FCRTH_FCEN);
|
|
}
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_FCTTV(0), hw->fc.pause_time);
|
|
IXGBE_WRITE_REG(hw, IXGBE_FCRTV, (hw->fc.pause_time >> 1));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_disable_pcie_master - Disable PCI-express master access
|
|
* @hw: pointer to hardware structure
|
|
*
|
|
* Disables PCI-Express master access and verifies there are no pending
|
|
* requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
|
|
* bit hasn't caused the master requests to be disabled, else 0
|
|
* is returned signifying master requests disabled.
|
|
**/
|
|
s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
|
|
{
|
|
u32 ctrl;
|
|
s32 i;
|
|
s32 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
|
|
|
|
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
|
|
ctrl |= IXGBE_CTRL_GIO_DIS;
|
|
IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
|
|
|
|
for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
|
|
if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) {
|
|
status = 0;
|
|
break;
|
|
}
|
|
udelay(100);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
/**
|
|
* ixgbe_acquire_swfw_sync - Aquire SWFW semaphore
|
|
* @hw: pointer to hardware structure
|
|
* @mask: Mask to specify wich semaphore to acquire
|
|
*
|
|
* Aquires the SWFW semaphore throught the GSSR register for the specified
|
|
* function (CSR, PHY0, PHY1, EEPROM, Flash)
|
|
**/
|
|
s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
|
|
{
|
|
u32 gssr;
|
|
u32 swmask = mask;
|
|
u32 fwmask = mask << 5;
|
|
s32 timeout = 200;
|
|
|
|
while (timeout) {
|
|
if (ixgbe_get_eeprom_semaphore(hw))
|
|
return -IXGBE_ERR_SWFW_SYNC;
|
|
|
|
gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
|
|
if (!(gssr & (fwmask | swmask)))
|
|
break;
|
|
|
|
/*
|
|
* Firmware currently using resource (fwmask) or other software
|
|
* thread currently using resource (swmask)
|
|
*/
|
|
ixgbe_release_eeprom_semaphore(hw);
|
|
msleep(5);
|
|
timeout--;
|
|
}
|
|
|
|
if (!timeout) {
|
|
hw_dbg(hw, "Driver can't access resource, GSSR timeout.\n");
|
|
return -IXGBE_ERR_SWFW_SYNC;
|
|
}
|
|
|
|
gssr |= swmask;
|
|
IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
|
|
|
|
ixgbe_release_eeprom_semaphore(hw);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_release_swfw_sync - Release SWFW semaphore
|
|
* @hw: pointer to hardware structure
|
|
* @mask: Mask to specify wich semaphore to release
|
|
*
|
|
* Releases the SWFW semaphore throught the GSSR register for the specified
|
|
* function (CSR, PHY0, PHY1, EEPROM, Flash)
|
|
**/
|
|
void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
|
|
{
|
|
u32 gssr;
|
|
u32 swmask = mask;
|
|
|
|
ixgbe_get_eeprom_semaphore(hw);
|
|
|
|
gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
|
|
gssr &= ~swmask;
|
|
IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
|
|
|
|
ixgbe_release_eeprom_semaphore(hw);
|
|
}
|
|
|
|
/**
|
|
* ixgbe_read_analog_reg8 - Reads 8 bit Atlas analog register
|
|
* @hw: pointer to hardware structure
|
|
* @reg: analog register to read
|
|
* @val: read value
|
|
*
|
|
* Performs write operation to analog register specified.
|
|
**/
|
|
s32 ixgbe_read_analog_reg8(struct ixgbe_hw *hw, u32 reg, u8 *val)
|
|
{
|
|
u32 atlas_ctl;
|
|
|
|
IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL,
|
|
IXGBE_ATLASCTL_WRITE_CMD | (reg << 8));
|
|
IXGBE_WRITE_FLUSH(hw);
|
|
udelay(10);
|
|
atlas_ctl = IXGBE_READ_REG(hw, IXGBE_ATLASCTL);
|
|
*val = (u8)atlas_ctl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* ixgbe_write_analog_reg8 - Writes 8 bit Atlas analog register
|
|
* @hw: pointer to hardware structure
|
|
* @reg: atlas register to write
|
|
* @val: value to write
|
|
*
|
|
* Performs write operation to Atlas analog register specified.
|
|
**/
|
|
s32 ixgbe_write_analog_reg8(struct ixgbe_hw *hw, u32 reg, u8 val)
|
|
{
|
|
u32 atlas_ctl;
|
|
|
|
atlas_ctl = (reg << 8) | val;
|
|
IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, atlas_ctl);
|
|
IXGBE_WRITE_FLUSH(hw);
|
|
udelay(10);
|
|
|
|
return 0;
|
|
}
|
|
|