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authorJeff Kirsher2011-04-07 07:42:33 -0700
committerJeff Kirsher2011-08-10 20:03:27 -0700
commitdee1ad47f2ee75f5146d83ca757c1b7861c34c3b (patch)
tree47cbdefe3d0f9b729724e378ad6a96eaddfd5fbc /drivers/net/ixgb/ixgb_hw.c
parentf7917c009c28c941ba151ee66f04dc7f6a2e1e0b (diff)
intel: Move the Intel wired LAN drivers
Moves the Intel wired LAN drivers into drivers/net/ethernet/intel/ and the necessary Kconfig and Makefile changes. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ixgb/ixgb_hw.c')
-rw-r--r--drivers/net/ixgb/ixgb_hw.c1262
1 files changed, 0 insertions, 1262 deletions
diff --git a/drivers/net/ixgb/ixgb_hw.c b/drivers/net/ixgb/ixgb_hw.c
deleted file mode 100644
index 3d61a9e4faf7..000000000000
--- a/drivers/net/ixgb/ixgb_hw.c
+++ /dev/null
@@ -1,1262 +0,0 @@
-/*******************************************************************************
-
- Intel PRO/10GbE Linux driver
- Copyright(c) 1999 - 2008 Intel Corporation.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms and conditions of the GNU General Public License,
- version 2, as published by the Free Software Foundation.
-
- This program is distributed in the hope it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- You should have received a copy of the GNU General Public License along with
- this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
-
- The full GNU General Public License is included in this distribution in
- the file called "COPYING".
-
- Contact Information:
- Linux NICS <linux.nics@intel.com>
- e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
-
-*******************************************************************************/
-
-/* ixgb_hw.c
- * Shared functions for accessing and configuring the adapter
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include "ixgb_hw.h"
-#include "ixgb_ids.h"
-
-#include <linux/etherdevice.h>
-
-/* Local function prototypes */
-
-static u32 ixgb_hash_mc_addr(struct ixgb_hw *hw, u8 * mc_addr);
-
-static void ixgb_mta_set(struct ixgb_hw *hw, u32 hash_value);
-
-static void ixgb_get_bus_info(struct ixgb_hw *hw);
-
-static bool ixgb_link_reset(struct ixgb_hw *hw);
-
-static void ixgb_optics_reset(struct ixgb_hw *hw);
-
-static void ixgb_optics_reset_bcm(struct ixgb_hw *hw);
-
-static ixgb_phy_type ixgb_identify_phy(struct ixgb_hw *hw);
-
-static void ixgb_clear_hw_cntrs(struct ixgb_hw *hw);
-
-static void ixgb_clear_vfta(struct ixgb_hw *hw);
-
-static void ixgb_init_rx_addrs(struct ixgb_hw *hw);
-
-static u16 ixgb_read_phy_reg(struct ixgb_hw *hw,
- u32 reg_address,
- u32 phy_address,
- u32 device_type);
-
-static bool ixgb_setup_fc(struct ixgb_hw *hw);
-
-static bool mac_addr_valid(u8 *mac_addr);
-
-static u32 ixgb_mac_reset(struct ixgb_hw *hw)
-{
- u32 ctrl_reg;
-
- ctrl_reg = IXGB_CTRL0_RST |
- IXGB_CTRL0_SDP3_DIR | /* All pins are Output=1 */
- IXGB_CTRL0_SDP2_DIR |
- IXGB_CTRL0_SDP1_DIR |
- IXGB_CTRL0_SDP0_DIR |
- IXGB_CTRL0_SDP3 | /* Initial value 1101 */
- IXGB_CTRL0_SDP2 |
- IXGB_CTRL0_SDP0;
-
-#ifdef HP_ZX1
- /* Workaround for 82597EX reset errata */
- IXGB_WRITE_REG_IO(hw, CTRL0, ctrl_reg);
-#else
- IXGB_WRITE_REG(hw, CTRL0, ctrl_reg);
-#endif
-
- /* Delay a few ms just to allow the reset to complete */
- msleep(IXGB_DELAY_AFTER_RESET);
- ctrl_reg = IXGB_READ_REG(hw, CTRL0);
-#ifdef DBG
- /* Make sure the self-clearing global reset bit did self clear */
- ASSERT(!(ctrl_reg & IXGB_CTRL0_RST));
-#endif
-
- if (hw->subsystem_vendor_id == SUN_SUBVENDOR_ID) {
- ctrl_reg = /* Enable interrupt from XFP and SerDes */
- IXGB_CTRL1_GPI0_EN |
- IXGB_CTRL1_SDP6_DIR |
- IXGB_CTRL1_SDP7_DIR |
- IXGB_CTRL1_SDP6 |
- IXGB_CTRL1_SDP7;
- IXGB_WRITE_REG(hw, CTRL1, ctrl_reg);
- ixgb_optics_reset_bcm(hw);
- }
-
- if (hw->phy_type == ixgb_phy_type_txn17401)
- ixgb_optics_reset(hw);
-
- return ctrl_reg;
-}
-
-/******************************************************************************
- * Reset the transmit and receive units; mask and clear all interrupts.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-bool
-ixgb_adapter_stop(struct ixgb_hw *hw)
-{
- u32 ctrl_reg;
- u32 icr_reg;
-
- ENTER();
-
- /* If we are stopped or resetting exit gracefully and wait to be
- * started again before accessing the hardware.
- */
- if (hw->adapter_stopped) {
- pr_debug("Exiting because the adapter is already stopped!!!\n");
- return false;
- }
-
- /* Set the Adapter Stopped flag so other driver functions stop
- * touching the Hardware.
- */
- hw->adapter_stopped = true;
-
- /* Clear interrupt mask to stop board from generating interrupts */
- pr_debug("Masking off all interrupts\n");
- IXGB_WRITE_REG(hw, IMC, 0xFFFFFFFF);
-
- /* Disable the Transmit and Receive units. Then delay to allow
- * any pending transactions to complete before we hit the MAC with
- * the global reset.
- */
- IXGB_WRITE_REG(hw, RCTL, IXGB_READ_REG(hw, RCTL) & ~IXGB_RCTL_RXEN);
- IXGB_WRITE_REG(hw, TCTL, IXGB_READ_REG(hw, TCTL) & ~IXGB_TCTL_TXEN);
- IXGB_WRITE_FLUSH(hw);
- msleep(IXGB_DELAY_BEFORE_RESET);
-
- /* Issue a global reset to the MAC. This will reset the chip's
- * transmit, receive, DMA, and link units. It will not effect
- * the current PCI configuration. The global reset bit is self-
- * clearing, and should clear within a microsecond.
- */
- pr_debug("Issuing a global reset to MAC\n");
-
- ctrl_reg = ixgb_mac_reset(hw);
-
- /* Clear interrupt mask to stop board from generating interrupts */
- pr_debug("Masking off all interrupts\n");
- IXGB_WRITE_REG(hw, IMC, 0xffffffff);
-
- /* Clear any pending interrupt events. */
- icr_reg = IXGB_READ_REG(hw, ICR);
-
- return ctrl_reg & IXGB_CTRL0_RST;
-}
-
-
-/******************************************************************************
- * Identifies the vendor of the optics module on the adapter. The SR adapters
- * support two different types of XPAK optics, so it is necessary to determine
- * which optics are present before applying any optics-specific workarounds.
- *
- * hw - Struct containing variables accessed by shared code.
- *
- * Returns: the vendor of the XPAK optics module.
- *****************************************************************************/
-static ixgb_xpak_vendor
-ixgb_identify_xpak_vendor(struct ixgb_hw *hw)
-{
- u32 i;
- u16 vendor_name[5];
- ixgb_xpak_vendor xpak_vendor;
-
- ENTER();
-
- /* Read the first few bytes of the vendor string from the XPAK NVR
- * registers. These are standard XENPAK/XPAK registers, so all XPAK
- * devices should implement them. */
- for (i = 0; i < 5; i++) {
- vendor_name[i] = ixgb_read_phy_reg(hw,
- MDIO_PMA_PMD_XPAK_VENDOR_NAME
- + i, IXGB_PHY_ADDRESS,
- MDIO_MMD_PMAPMD);
- }
-
- /* Determine the actual vendor */
- if (vendor_name[0] == 'I' &&
- vendor_name[1] == 'N' &&
- vendor_name[2] == 'T' &&
- vendor_name[3] == 'E' && vendor_name[4] == 'L') {
- xpak_vendor = ixgb_xpak_vendor_intel;
- } else {
- xpak_vendor = ixgb_xpak_vendor_infineon;
- }
-
- return xpak_vendor;
-}
-
-/******************************************************************************
- * Determine the physical layer module on the adapter.
- *
- * hw - Struct containing variables accessed by shared code. The device_id
- * field must be (correctly) populated before calling this routine.
- *
- * Returns: the phy type of the adapter.
- *****************************************************************************/
-static ixgb_phy_type
-ixgb_identify_phy(struct ixgb_hw *hw)
-{
- ixgb_phy_type phy_type;
- ixgb_xpak_vendor xpak_vendor;
-
- ENTER();
-
- /* Infer the transceiver/phy type from the device id */
- switch (hw->device_id) {
- case IXGB_DEVICE_ID_82597EX:
- pr_debug("Identified TXN17401 optics\n");
- phy_type = ixgb_phy_type_txn17401;
- break;
-
- case IXGB_DEVICE_ID_82597EX_SR:
- /* The SR adapters carry two different types of XPAK optics
- * modules; read the vendor identifier to determine the exact
- * type of optics. */
- xpak_vendor = ixgb_identify_xpak_vendor(hw);
- if (xpak_vendor == ixgb_xpak_vendor_intel) {
- pr_debug("Identified TXN17201 optics\n");
- phy_type = ixgb_phy_type_txn17201;
- } else {
- pr_debug("Identified G6005 optics\n");
- phy_type = ixgb_phy_type_g6005;
- }
- break;
- case IXGB_DEVICE_ID_82597EX_LR:
- pr_debug("Identified G6104 optics\n");
- phy_type = ixgb_phy_type_g6104;
- break;
- case IXGB_DEVICE_ID_82597EX_CX4:
- pr_debug("Identified CX4\n");
- xpak_vendor = ixgb_identify_xpak_vendor(hw);
- if (xpak_vendor == ixgb_xpak_vendor_intel) {
- pr_debug("Identified TXN17201 optics\n");
- phy_type = ixgb_phy_type_txn17201;
- } else {
- pr_debug("Identified G6005 optics\n");
- phy_type = ixgb_phy_type_g6005;
- }
- break;
- default:
- pr_debug("Unknown physical layer module\n");
- phy_type = ixgb_phy_type_unknown;
- break;
- }
-
- /* update phy type for sun specific board */
- if (hw->subsystem_vendor_id == SUN_SUBVENDOR_ID)
- phy_type = ixgb_phy_type_bcm;
-
- return phy_type;
-}
-
-/******************************************************************************
- * Performs basic configuration of the adapter.
- *
- * hw - Struct containing variables accessed by shared code
- *
- * Resets the controller.
- * Reads and validates the EEPROM.
- * Initializes the receive address registers.
- * Initializes the multicast table.
- * Clears all on-chip counters.
- * Calls routine to setup flow control settings.
- * Leaves the transmit and receive units disabled and uninitialized.
- *
- * Returns:
- * true if successful,
- * false if unrecoverable problems were encountered.
- *****************************************************************************/
-bool
-ixgb_init_hw(struct ixgb_hw *hw)
-{
- u32 i;
- u32 ctrl_reg;
- bool status;
-
- ENTER();
-
- /* Issue a global reset to the MAC. This will reset the chip's
- * transmit, receive, DMA, and link units. It will not effect
- * the current PCI configuration. The global reset bit is self-
- * clearing, and should clear within a microsecond.
- */
- pr_debug("Issuing a global reset to MAC\n");
-
- ctrl_reg = ixgb_mac_reset(hw);
-
- pr_debug("Issuing an EE reset to MAC\n");
-#ifdef HP_ZX1
- /* Workaround for 82597EX reset errata */
- IXGB_WRITE_REG_IO(hw, CTRL1, IXGB_CTRL1_EE_RST);
-#else
- IXGB_WRITE_REG(hw, CTRL1, IXGB_CTRL1_EE_RST);
-#endif
-
- /* Delay a few ms just to allow the reset to complete */
- msleep(IXGB_DELAY_AFTER_EE_RESET);
-
- if (!ixgb_get_eeprom_data(hw))
- return false;
-
- /* Use the device id to determine the type of phy/transceiver. */
- hw->device_id = ixgb_get_ee_device_id(hw);
- hw->phy_type = ixgb_identify_phy(hw);
-
- /* Setup the receive addresses.
- * Receive Address Registers (RARs 0 - 15).
- */
- ixgb_init_rx_addrs(hw);
-
- /*
- * Check that a valid MAC address has been set.
- * If it is not valid, we fail hardware init.
- */
- if (!mac_addr_valid(hw->curr_mac_addr)) {
- pr_debug("MAC address invalid after ixgb_init_rx_addrs\n");
- return(false);
- }
-
- /* tell the routines in this file they can access hardware again */
- hw->adapter_stopped = false;
-
- /* Fill in the bus_info structure */
- ixgb_get_bus_info(hw);
-
- /* Zero out the Multicast HASH table */
- pr_debug("Zeroing the MTA\n");
- for (i = 0; i < IXGB_MC_TBL_SIZE; i++)
- IXGB_WRITE_REG_ARRAY(hw, MTA, i, 0);
-
- /* Zero out the VLAN Filter Table Array */
- ixgb_clear_vfta(hw);
-
- /* Zero all of the hardware counters */
- ixgb_clear_hw_cntrs(hw);
-
- /* Call a subroutine to setup flow control. */
- status = ixgb_setup_fc(hw);
-
- /* 82597EX errata: Call check-for-link in case lane deskew is locked */
- ixgb_check_for_link(hw);
-
- return status;
-}
-
-/******************************************************************************
- * Initializes receive address filters.
- *
- * hw - Struct containing variables accessed by shared code
- *
- * Places the MAC address in receive address register 0 and clears the rest
- * of the receive address registers. Clears the multicast table. Assumes
- * the receiver is in reset when the routine is called.
- *****************************************************************************/
-static void
-ixgb_init_rx_addrs(struct ixgb_hw *hw)
-{
- u32 i;
-
- ENTER();
-
- /*
- * 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 (!mac_addr_valid(hw->curr_mac_addr)) {
-
- /* Get the MAC address from the eeprom for later reference */
- ixgb_get_ee_mac_addr(hw, hw->curr_mac_addr);
-
- pr_debug("Keeping Permanent MAC Addr = %pM\n",
- hw->curr_mac_addr);
- } else {
-
- /* Setup the receive address. */
- pr_debug("Overriding MAC Address in RAR[0]\n");
- pr_debug("New MAC Addr = %pM\n", hw->curr_mac_addr);
-
- ixgb_rar_set(hw, hw->curr_mac_addr, 0);
- }
-
- /* Zero out the other 15 receive addresses. */
- pr_debug("Clearing RAR[1-15]\n");
- for (i = 1; i < IXGB_RAR_ENTRIES; i++) {
- /* Write high reg first to disable the AV bit first */
- IXGB_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
- IXGB_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
- }
-}
-
-/******************************************************************************
- * Updates the MAC's list of multicast addresses.
- *
- * hw - Struct containing variables accessed by shared code
- * 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 last 15 receive
- * address registers and the multicast table. Uses receive address registers
- * for the first 15 multicast addresses, and hashes the rest into the
- * multicast table.
- *****************************************************************************/
-void
-ixgb_mc_addr_list_update(struct ixgb_hw *hw,
- u8 *mc_addr_list,
- u32 mc_addr_count,
- u32 pad)
-{
- u32 hash_value;
- u32 i;
- u32 rar_used_count = 1; /* RAR[0] is used for our MAC address */
- u8 *mca;
-
- ENTER();
-
- /* Set the new number of MC addresses that we are being requested to use. */
- hw->num_mc_addrs = mc_addr_count;
-
- /* Clear RAR[1-15] */
- pr_debug("Clearing RAR[1-15]\n");
- for (i = rar_used_count; i < IXGB_RAR_ENTRIES; i++) {
- IXGB_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
- IXGB_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
- }
-
- /* Clear the MTA */
- pr_debug("Clearing MTA\n");
- for (i = 0; i < IXGB_MC_TBL_SIZE; i++)
- IXGB_WRITE_REG_ARRAY(hw, MTA, i, 0);
-
- /* Add the new addresses */
- mca = mc_addr_list;
- for (i = 0; i < mc_addr_count; i++) {
- pr_debug("Adding the multicast addresses:\n");
- pr_debug("MC Addr #%d = %pM\n", i, mca);
-
- /* Place this multicast address in the RAR if there is room, *
- * else put it in the MTA
- */
- if (rar_used_count < IXGB_RAR_ENTRIES) {
- ixgb_rar_set(hw, mca, rar_used_count);
- pr_debug("Added a multicast address to RAR[%d]\n", i);
- rar_used_count++;
- } else {
- hash_value = ixgb_hash_mc_addr(hw, mca);
-
- pr_debug("Hash value = 0x%03X\n", hash_value);
-
- ixgb_mta_set(hw, hash_value);
- }
-
- mca += IXGB_ETH_LENGTH_OF_ADDRESS + pad;
- }
-
- pr_debug("MC Update Complete\n");
-}
-
-/******************************************************************************
- * Hashes an address to determine its location in the multicast table
- *
- * hw - Struct containing variables accessed by shared code
- * mc_addr - the multicast address to hash
- *
- * Returns:
- * The hash value
- *****************************************************************************/
-static u32
-ixgb_hash_mc_addr(struct ixgb_hw *hw,
- u8 *mc_addr)
-{
- u32 hash_value = 0;
-
- ENTER();
-
- /* The portion of the address that is used for the hash table is
- * determined by the mc_filter_type setting.
- */
- switch (hw->mc_filter_type) {
- /* [0] [1] [2] [3] [4] [5]
- * 01 AA 00 12 34 56
- * LSB MSB - According to H/W docs */
- case 0:
- /* [47:36] i.e. 0x563 for above example address */
- hash_value =
- ((mc_addr[4] >> 4) | (((u16) mc_addr[5]) << 4));
- break;
- case 1: /* [46:35] i.e. 0xAC6 for above example address */
- hash_value =
- ((mc_addr[4] >> 3) | (((u16) mc_addr[5]) << 5));
- break;
- case 2: /* [45:34] i.e. 0x5D8 for above example address */
- hash_value =
- ((mc_addr[4] >> 2) | (((u16) mc_addr[5]) << 6));
- break;
- case 3: /* [43:32] i.e. 0x634 for above example address */
- hash_value = ((mc_addr[4]) | (((u16) mc_addr[5]) << 8));
- break;
- default:
- /* Invalid mc_filter_type, what should we do? */
- pr_debug("MC filter type param set incorrectly\n");
- ASSERT(0);
- break;
- }
-
- hash_value &= 0xFFF;
- return hash_value;
-}
-
-/******************************************************************************
- * Sets the bit in the multicast table corresponding to the hash value.
- *
- * hw - Struct containing variables accessed by shared code
- * hash_value - Multicast address hash value
- *****************************************************************************/
-static void
-ixgb_mta_set(struct ixgb_hw *hw,
- u32 hash_value)
-{
- u32 hash_bit, hash_reg;
- u32 mta_reg;
-
- /* 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[hash_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 hash value and the bit within that
- * register are determined by the lower 5 bits of the value.
- */
- hash_reg = (hash_value >> 5) & 0x7F;
- hash_bit = hash_value & 0x1F;
-
- mta_reg = IXGB_READ_REG_ARRAY(hw, MTA, hash_reg);
-
- mta_reg |= (1 << hash_bit);
-
- IXGB_WRITE_REG_ARRAY(hw, MTA, hash_reg, mta_reg);
-}
-
-/******************************************************************************
- * Puts an ethernet address into a receive address register.
- *
- * hw - Struct containing variables accessed by shared code
- * addr - Address to put into receive address register
- * index - Receive address register to write
- *****************************************************************************/
-void
-ixgb_rar_set(struct ixgb_hw *hw,
- u8 *addr,
- u32 index)
-{
- u32 rar_low, rar_high;
-
- ENTER();
-
- /* 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) |
- IXGB_RAH_AV);
-
- IXGB_WRITE_REG_ARRAY(hw, RA, (index << 1), rar_low);
- IXGB_WRITE_REG_ARRAY(hw, RA, ((index << 1) + 1), rar_high);
-}
-
-/******************************************************************************
- * Writes a value to the specified offset in the VLAN filter table.
- *
- * hw - Struct containing variables accessed by shared code
- * offset - Offset in VLAN filer table to write
- * value - Value to write into VLAN filter table
- *****************************************************************************/
-void
-ixgb_write_vfta(struct ixgb_hw *hw,
- u32 offset,
- u32 value)
-{
- IXGB_WRITE_REG_ARRAY(hw, VFTA, offset, value);
-}
-
-/******************************************************************************
- * Clears the VLAN filer table
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-static void
-ixgb_clear_vfta(struct ixgb_hw *hw)
-{
- u32 offset;
-
- for (offset = 0; offset < IXGB_VLAN_FILTER_TBL_SIZE; offset++)
- IXGB_WRITE_REG_ARRAY(hw, VFTA, offset, 0);
-}
-
-/******************************************************************************
- * Configures the flow control settings based on SW configuration.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-
-static bool
-ixgb_setup_fc(struct ixgb_hw *hw)
-{
- u32 ctrl_reg;
- u32 pap_reg = 0; /* by default, assume no pause time */
- bool status = true;
-
- ENTER();
-
- /* Get the current control reg 0 settings */
- ctrl_reg = IXGB_READ_REG(hw, CTRL0);
-
- /* Clear the Receive Pause Enable and Transmit Pause Enable bits */
- ctrl_reg &= ~(IXGB_CTRL0_RPE | IXGB_CTRL0_TPE);
-
- /* 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 ixgb_fc_none: /* 0 */
- /* Set CMDC bit to disable Rx Flow control */
- ctrl_reg |= (IXGB_CTRL0_CMDC);
- break;
- case ixgb_fc_rx_pause: /* 1 */
- /* RX Flow control is enabled, and TX Flow control is
- * disabled.
- */
- ctrl_reg |= (IXGB_CTRL0_RPE);
- break;
- case ixgb_fc_tx_pause: /* 2 */
- /* TX Flow control is enabled, and RX Flow control is
- * disabled, by a software over-ride.
- */
- ctrl_reg |= (IXGB_CTRL0_TPE);
- pap_reg = hw->fc.pause_time;
- break;
- case ixgb_fc_full: /* 3 */
- /* Flow control (both RX and TX) is enabled by a software
- * over-ride.
- */
- ctrl_reg |= (IXGB_CTRL0_RPE | IXGB_CTRL0_TPE);
- pap_reg = hw->fc.pause_time;
- break;
- default:
- /* We should never get here. The value should be 0-3. */
- pr_debug("Flow control param set incorrectly\n");
- ASSERT(0);
- break;
- }
-
- /* Write the new settings */
- IXGB_WRITE_REG(hw, CTRL0, ctrl_reg);
-
- if (pap_reg != 0)
- IXGB_WRITE_REG(hw, PAP, pap_reg);
-
- /* Set the flow control receive threshold registers. Normally,
- * these registers will be set to a default threshold that may be
- * adjusted later by the driver's runtime code. However, if the
- * ability to transmit pause frames in not enabled, then these
- * registers will be set to 0.
- */
- if (!(hw->fc.type & ixgb_fc_tx_pause)) {
- IXGB_WRITE_REG(hw, FCRTL, 0);
- IXGB_WRITE_REG(hw, FCRTH, 0);
- } else {
- /* 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.send_xon) {
- IXGB_WRITE_REG(hw, FCRTL,
- (hw->fc.low_water | IXGB_FCRTL_XONE));
- } else {
- IXGB_WRITE_REG(hw, FCRTL, hw->fc.low_water);
- }
- IXGB_WRITE_REG(hw, FCRTH, hw->fc.high_water);
- }
- return status;
-}
-
-/******************************************************************************
- * Reads a word from a device over the Management Data Interface (MDI) bus.
- * This interface is used to manage Physical layer devices.
- *
- * hw - Struct containing variables accessed by hw code
- * reg_address - Offset of device register being read.
- * phy_address - Address of device on MDI.
- *
- * Returns: Data word (16 bits) from MDI device.
- *
- * The 82597EX has support for several MDI access methods. This routine
- * uses the new protocol MDI Single Command and Address Operation.
- * This requires that first an address cycle command is sent, followed by a
- * read command.
- *****************************************************************************/
-static u16
-ixgb_read_phy_reg(struct ixgb_hw *hw,
- u32 reg_address,
- u32 phy_address,
- u32 device_type)
-{
- u32 i;
- u32 data;
- u32 command = 0;
-
- ASSERT(reg_address <= IXGB_MAX_PHY_REG_ADDRESS);
- ASSERT(phy_address <= IXGB_MAX_PHY_ADDRESS);
- ASSERT(device_type <= IXGB_MAX_PHY_DEV_TYPE);
-
- /* Setup and write the address cycle command */
- command = ((reg_address << IXGB_MSCA_NP_ADDR_SHIFT) |
- (device_type << IXGB_MSCA_DEV_TYPE_SHIFT) |
- (phy_address << IXGB_MSCA_PHY_ADDR_SHIFT) |
- (IXGB_MSCA_ADDR_CYCLE | IXGB_MSCA_MDI_COMMAND));
-
- IXGB_WRITE_REG(hw, MSCA, command);
-
- /**************************************************************
- ** Check every 10 usec to see if the address cycle completed
- ** The COMMAND bit will clear when the operation is complete.
- ** This may take as long as 64 usecs (we'll wait 100 usecs max)
- ** from the CPU Write to the Ready bit assertion.
- **************************************************************/
-
- for (i = 0; i < 10; i++)
- {
- udelay(10);
-
- command = IXGB_READ_REG(hw, MSCA);
-
- if ((command & IXGB_MSCA_MDI_COMMAND) == 0)
- break;
- }
-
- ASSERT((command & IXGB_MSCA_MDI_COMMAND) == 0);
-
- /* Address cycle complete, setup and write the read command */
- command = ((reg_address << IXGB_MSCA_NP_ADDR_SHIFT) |
- (device_type << IXGB_MSCA_DEV_TYPE_SHIFT) |
- (phy_address << IXGB_MSCA_PHY_ADDR_SHIFT) |
- (IXGB_MSCA_READ | IXGB_MSCA_MDI_COMMAND));
-
- IXGB_WRITE_REG(hw, MSCA, command);
-
- /**************************************************************
- ** Check every 10 usec to see if the read command completed
- ** The COMMAND bit will clear when the operation is complete.
- ** The read may take as long as 64 usecs (we'll wait 100 usecs max)
- ** from the CPU Write to the Ready bit assertion.
- **************************************************************/
-
- for (i = 0; i < 10; i++)
- {
- udelay(10);
-
- command = IXGB_READ_REG(hw, MSCA);
-
- if ((command & IXGB_MSCA_MDI_COMMAND) == 0)
- break;
- }
-
- ASSERT((command & IXGB_MSCA_MDI_COMMAND) == 0);
-
- /* Operation is complete, get the data from the MDIO Read/Write Data
- * register and return.
- */
- data = IXGB_READ_REG(hw, MSRWD);
- data >>= IXGB_MSRWD_READ_DATA_SHIFT;
- return((u16) data);
-}
-
-/******************************************************************************
- * Writes a word to a device over the Management Data Interface (MDI) bus.
- * This interface is used to manage Physical layer devices.
- *
- * hw - Struct containing variables accessed by hw code
- * reg_address - Offset of device register being read.
- * phy_address - Address of device on MDI.
- * device_type - Also known as the Device ID or DID.
- * data - 16-bit value to be written
- *
- * Returns: void.
- *
- * The 82597EX has support for several MDI access methods. This routine
- * uses the new protocol MDI Single Command and Address Operation.
- * This requires that first an address cycle command is sent, followed by a
- * write command.
- *****************************************************************************/
-static void
-ixgb_write_phy_reg(struct ixgb_hw *hw,
- u32 reg_address,
- u32 phy_address,
- u32 device_type,
- u16 data)
-{
- u32 i;
- u32 command = 0;
-
- ASSERT(reg_address <= IXGB_MAX_PHY_REG_ADDRESS);
- ASSERT(phy_address <= IXGB_MAX_PHY_ADDRESS);
- ASSERT(device_type <= IXGB_MAX_PHY_DEV_TYPE);
-
- /* Put the data in the MDIO Read/Write Data register */
- IXGB_WRITE_REG(hw, MSRWD, (u32)data);
-
- /* Setup and write the address cycle command */
- command = ((reg_address << IXGB_MSCA_NP_ADDR_SHIFT) |
- (device_type << IXGB_MSCA_DEV_TYPE_SHIFT) |
- (phy_address << IXGB_MSCA_PHY_ADDR_SHIFT) |
- (IXGB_MSCA_ADDR_CYCLE | IXGB_MSCA_MDI_COMMAND));
-
- IXGB_WRITE_REG(hw, MSCA, command);
-
- /**************************************************************
- ** Check every 10 usec to see if the address cycle completed
- ** The COMMAND bit will clear when the operation is complete.
- ** This may take as long as 64 usecs (we'll wait 100 usecs max)
- ** from the CPU Write to the Ready bit assertion.
- **************************************************************/
-
- for (i = 0; i < 10; i++)
- {
- udelay(10);
-
- command = IXGB_READ_REG(hw, MSCA);
-
- if ((command & IXGB_MSCA_MDI_COMMAND) == 0)
- break;
- }
-
- ASSERT((command & IXGB_MSCA_MDI_COMMAND) == 0);
-
- /* Address cycle complete, setup and write the write command */
- command = ((reg_address << IXGB_MSCA_NP_ADDR_SHIFT) |
- (device_type << IXGB_MSCA_DEV_TYPE_SHIFT) |
- (phy_address << IXGB_MSCA_PHY_ADDR_SHIFT) |
- (IXGB_MSCA_WRITE | IXGB_MSCA_MDI_COMMAND));
-
- IXGB_WRITE_REG(hw, MSCA, command);
-
- /**************************************************************
- ** Check every 10 usec to see if the read command completed
- ** The COMMAND bit will clear when the operation is complete.
- ** The write may take as long as 64 usecs (we'll wait 100 usecs max)
- ** from the CPU Write to the Ready bit assertion.
- **************************************************************/
-
- for (i = 0; i < 10; i++)
- {
- udelay(10);
-
- command = IXGB_READ_REG(hw, MSCA);
-
- if ((command & IXGB_MSCA_MDI_COMMAND) == 0)
- break;
- }
-
- ASSERT((command & IXGB_MSCA_MDI_COMMAND) == 0);
-
- /* Operation is complete, return. */
-}
-
-/******************************************************************************
- * Checks to see if the link status of the hardware has changed.
- *
- * hw - Struct containing variables accessed by hw code
- *
- * Called by any function that needs to check the link status of the adapter.
- *****************************************************************************/
-void
-ixgb_check_for_link(struct ixgb_hw *hw)
-{
- u32 status_reg;
- u32 xpcss_reg;
-
- ENTER();
-
- xpcss_reg = IXGB_READ_REG(hw, XPCSS);
- status_reg = IXGB_READ_REG(hw, STATUS);
-
- if ((xpcss_reg & IXGB_XPCSS_ALIGN_STATUS) &&
- (status_reg & IXGB_STATUS_LU)) {
- hw->link_up = true;
- } else if (!(xpcss_reg & IXGB_XPCSS_ALIGN_STATUS) &&
- (status_reg & IXGB_STATUS_LU)) {
- pr_debug("XPCSS Not Aligned while Status:LU is set\n");
- hw->link_up = ixgb_link_reset(hw);
- } else {
- /*
- * 82597EX errata. Since the lane deskew problem may prevent
- * link, reset the link before reporting link down.
- */
- hw->link_up = ixgb_link_reset(hw);
- }
- /* Anything else for 10 Gig?? */
-}
-
-/******************************************************************************
- * Check for a bad link condition that may have occurred.
- * The indication is that the RFC / LFC registers may be incrementing
- * continually. A full adapter reset is required to recover.
- *
- * hw - Struct containing variables accessed by hw code
- *
- * Called by any function that needs to check the link status of the adapter.
- *****************************************************************************/
-bool ixgb_check_for_bad_link(struct ixgb_hw *hw)
-{
- u32 newLFC, newRFC;
- bool bad_link_returncode = false;
-
- if (hw->phy_type == ixgb_phy_type_txn17401) {
- newLFC = IXGB_READ_REG(hw, LFC);
- newRFC = IXGB_READ_REG(hw, RFC);
- if ((hw->lastLFC + 250 < newLFC)
- || (hw->lastRFC + 250 < newRFC)) {
- pr_debug("BAD LINK! too many LFC/RFC since last check\n");
- bad_link_returncode = true;
- }
- hw->lastLFC = newLFC;
- hw->lastRFC = newRFC;
- }
-
- return bad_link_returncode;
-}
-
-/******************************************************************************
- * Clears all hardware statistics counters.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-static void
-ixgb_clear_hw_cntrs(struct ixgb_hw *hw)
-{
- volatile u32 temp_reg;
-
- ENTER();
-
- /* if we are stopped or resetting exit gracefully */
- if (hw->adapter_stopped) {
- pr_debug("Exiting because the adapter is stopped!!!\n");
- return;
- }
-
- temp_reg = IXGB_READ_REG(hw, TPRL);
- temp_reg = IXGB_READ_REG(hw, TPRH);
- temp_reg = IXGB_READ_REG(hw, GPRCL);
- temp_reg = IXGB_READ_REG(hw, GPRCH);
- temp_reg = IXGB_READ_REG(hw, BPRCL);
- temp_reg = IXGB_READ_REG(hw, BPRCH);
- temp_reg = IXGB_READ_REG(hw, MPRCL);
- temp_reg = IXGB_READ_REG(hw, MPRCH);
- temp_reg = IXGB_READ_REG(hw, UPRCL);
- temp_reg = IXGB_READ_REG(hw, UPRCH);
- temp_reg = IXGB_READ_REG(hw, VPRCL);
- temp_reg = IXGB_READ_REG(hw, VPRCH);
- temp_reg = IXGB_READ_REG(hw, JPRCL);
- temp_reg = IXGB_READ_REG(hw, JPRCH);
- temp_reg = IXGB_READ_REG(hw, GORCL);
- temp_reg = IXGB_READ_REG(hw, GORCH);
- temp_reg = IXGB_READ_REG(hw, TORL);
- temp_reg = IXGB_READ_REG(hw, TORH);
- temp_reg = IXGB_READ_REG(hw, RNBC);
- temp_reg = IXGB_READ_REG(hw, RUC);
- temp_reg = IXGB_READ_REG(hw, ROC);
- temp_reg = IXGB_READ_REG(hw, RLEC);
- temp_reg = IXGB_READ_REG(hw, CRCERRS);
- temp_reg = IXGB_READ_REG(hw, ICBC);
- temp_reg = IXGB_READ_REG(hw, ECBC);
- temp_reg = IXGB_READ_REG(hw, MPC);
- temp_reg = IXGB_READ_REG(hw, TPTL);
- temp_reg = IXGB_READ_REG(hw, TPTH);
- temp_reg = IXGB_READ_REG(hw, GPTCL);
- temp_reg = IXGB_READ_REG(hw, GPTCH);
- temp_reg = IXGB_READ_REG(hw, BPTCL);
- temp_reg = IXGB_READ_REG(hw, BPTCH);
- temp_reg = IXGB_READ_REG(hw, MPTCL);
- temp_reg = IXGB_READ_REG(hw, MPTCH);
- temp_reg = IXGB_READ_REG(hw, UPTCL);
- temp_reg = IXGB_READ_REG(hw, UPTCH);
- temp_reg = IXGB_READ_REG(hw, VPTCL);
- temp_reg = IXGB_READ_REG(hw, VPTCH);
- temp_reg = IXGB_READ_REG(hw, JPTCL);
- temp_reg = IXGB_READ_REG(hw, JPTCH);
- temp_reg = IXGB_READ_REG(hw, GOTCL);
- temp_reg = IXGB_READ_REG(hw, GOTCH);
- temp_reg = IXGB_READ_REG(hw, TOTL);
- temp_reg = IXGB_READ_REG(hw, TOTH);
- temp_reg = IXGB_READ_REG(hw, DC);
- temp_reg = IXGB_READ_REG(hw, PLT64C);
- temp_reg = IXGB_READ_REG(hw, TSCTC);
- temp_reg = IXGB_READ_REG(hw, TSCTFC);
- temp_reg = IXGB_READ_REG(hw, IBIC);
- temp_reg = IXGB_READ_REG(hw, RFC);
- temp_reg = IXGB_READ_REG(hw, LFC);
- temp_reg = IXGB_READ_REG(hw, PFRC);
- temp_reg = IXGB_READ_REG(hw, PFTC);
- temp_reg = IXGB_READ_REG(hw, MCFRC);
- temp_reg = IXGB_READ_REG(hw, MCFTC);
- temp_reg = IXGB_READ_REG(hw, XONRXC);
- temp_reg = IXGB_READ_REG(hw, XONTXC);
- temp_reg = IXGB_READ_REG(hw, XOFFRXC);
- temp_reg = IXGB_READ_REG(hw, XOFFTXC);
- temp_reg = IXGB_READ_REG(hw, RJC);
-}
-
-/******************************************************************************
- * Turns on the software controllable LED
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-void
-ixgb_led_on(struct ixgb_hw *hw)
-{
- u32 ctrl0_reg = IXGB_READ_REG(hw, CTRL0);
-
- /* To turn on the LED, clear software-definable pin 0 (SDP0). */
- ctrl0_reg &= ~IXGB_CTRL0_SDP0;
- IXGB_WRITE_REG(hw, CTRL0, ctrl0_reg);
-}
-
-/******************************************************************************
- * Turns off the software controllable LED
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-void
-ixgb_led_off(struct ixgb_hw *hw)
-{
- u32 ctrl0_reg = IXGB_READ_REG(hw, CTRL0);
-
- /* To turn off the LED, set software-definable pin 0 (SDP0). */
- ctrl0_reg |= IXGB_CTRL0_SDP0;
- IXGB_WRITE_REG(hw, CTRL0, ctrl0_reg);
-}
-
-/******************************************************************************
- * Gets the current PCI bus type, speed, and width of the hardware
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-static void
-ixgb_get_bus_info(struct ixgb_hw *hw)
-{
- u32 status_reg;
-
- status_reg = IXGB_READ_REG(hw, STATUS);
-
- hw->bus.type = (status_reg & IXGB_STATUS_PCIX_MODE) ?
- ixgb_bus_type_pcix : ixgb_bus_type_pci;
-
- if (hw->bus.type == ixgb_bus_type_pci) {
- hw->bus.speed = (status_reg & IXGB_STATUS_PCI_SPD) ?
- ixgb_bus_speed_66 : ixgb_bus_speed_33;
- } else {
- switch (status_reg & IXGB_STATUS_PCIX_SPD_MASK) {
- case IXGB_STATUS_PCIX_SPD_66:
- hw->bus.speed = ixgb_bus_speed_66;
- break;
- case IXGB_STATUS_PCIX_SPD_100:
- hw->bus.speed = ixgb_bus_speed_100;
- break;
- case IXGB_STATUS_PCIX_SPD_133:
- hw->bus.speed = ixgb_bus_speed_133;
- break;
- default:
- hw->bus.speed = ixgb_bus_speed_reserved;
- break;
- }
- }
-
- hw->bus.width = (status_reg & IXGB_STATUS_BUS64) ?
- ixgb_bus_width_64 : ixgb_bus_width_32;
-}
-
-/******************************************************************************
- * Tests a MAC address to ensure it is a valid Individual Address
- *
- * mac_addr - pointer to MAC address.
- *
- *****************************************************************************/
-static bool
-mac_addr_valid(u8 *mac_addr)
-{
- bool is_valid = true;
- ENTER();
-
- /* Make sure it is not a multicast address */
- if (is_multicast_ether_addr(mac_addr)) {
- pr_debug("MAC address is multicast\n");
- is_valid = false;
- }
- /* Not a broadcast address */
- else if (is_broadcast_ether_addr(mac_addr)) {
- pr_debug("MAC address is broadcast\n");
- is_valid = false;
- }
- /* Reject the zero address */
- else if (is_zero_ether_addr(mac_addr)) {
- pr_debug("MAC address is all zeros\n");
- is_valid = false;
- }
- return is_valid;
-}
-
-/******************************************************************************
- * Resets the 10GbE link. Waits the settle time and returns the state of
- * the link.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-static bool
-ixgb_link_reset(struct ixgb_hw *hw)
-{
- bool link_status = false;
- u8 wait_retries = MAX_RESET_ITERATIONS;
- u8 lrst_retries = MAX_RESET_ITERATIONS;
-
- do {
- /* Reset the link */
- IXGB_WRITE_REG(hw, CTRL0,
- IXGB_READ_REG(hw, CTRL0) | IXGB_CTRL0_LRST);
-
- /* Wait for link-up and lane re-alignment */
- do {
- udelay(IXGB_DELAY_USECS_AFTER_LINK_RESET);
- link_status =
- ((IXGB_READ_REG(hw, STATUS) & IXGB_STATUS_LU)
- && (IXGB_READ_REG(hw, XPCSS) &
- IXGB_XPCSS_ALIGN_STATUS)) ? true : false;
- } while (!link_status && --wait_retries);
-
- } while (!link_status && --lrst_retries);
-
- return link_status;
-}
-
-/******************************************************************************
- * Resets the 10GbE optics module.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-static void
-ixgb_optics_reset(struct ixgb_hw *hw)
-{
- if (hw->phy_type == ixgb_phy_type_txn17401) {
- u16 mdio_reg;
-
- ixgb_write_phy_reg(hw,
- MDIO_CTRL1,
- IXGB_PHY_ADDRESS,
- MDIO_MMD_PMAPMD,
- MDIO_CTRL1_RESET);
-
- mdio_reg = ixgb_read_phy_reg(hw,
- MDIO_CTRL1,
- IXGB_PHY_ADDRESS,
- MDIO_MMD_PMAPMD);
- }
-}
-
-/******************************************************************************
- * Resets the 10GbE optics module for Sun variant NIC.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
-
-#define IXGB_BCM8704_USER_PMD_TX_CTRL_REG 0xC803
-#define IXGB_BCM8704_USER_PMD_TX_CTRL_REG_VAL 0x0164
-#define IXGB_BCM8704_USER_CTRL_REG 0xC800
-#define IXGB_BCM8704_USER_CTRL_REG_VAL 0x7FBF
-#define IXGB_BCM8704_USER_DEV3_ADDR 0x0003
-#define IXGB_SUN_PHY_ADDRESS 0x0000
-#define IXGB_SUN_PHY_RESET_DELAY 305
-
-static void
-ixgb_optics_reset_bcm(struct ixgb_hw *hw)
-{
- u32 ctrl = IXGB_READ_REG(hw, CTRL0);
- ctrl &= ~IXGB_CTRL0_SDP2;
- ctrl |= IXGB_CTRL0_SDP3;
- IXGB_WRITE_REG(hw, CTRL0, ctrl);
- IXGB_WRITE_FLUSH(hw);
-
- /* SerDes needs extra delay */
- msleep(IXGB_SUN_PHY_RESET_DELAY);
-
- /* Broadcom 7408L configuration */
- /* Reference clock config */
- ixgb_write_phy_reg(hw,
- IXGB_BCM8704_USER_PMD_TX_CTRL_REG,
- IXGB_SUN_PHY_ADDRESS,
- IXGB_BCM8704_USER_DEV3_ADDR,
- IXGB_BCM8704_USER_PMD_TX_CTRL_REG_VAL);
- /* we must read the registers twice */
- ixgb_read_phy_reg(hw,
- IXGB_BCM8704_USER_PMD_TX_CTRL_REG,
- IXGB_SUN_PHY_ADDRESS,
- IXGB_BCM8704_USER_DEV3_ADDR);
- ixgb_read_phy_reg(hw,
- IXGB_BCM8704_USER_PMD_TX_CTRL_REG,
- IXGB_SUN_PHY_ADDRESS,
- IXGB_BCM8704_USER_DEV3_ADDR);
-
- ixgb_write_phy_reg(hw,
- IXGB_BCM8704_USER_CTRL_REG,
- IXGB_SUN_PHY_ADDRESS,
- IXGB_BCM8704_USER_DEV3_ADDR,
- IXGB_BCM8704_USER_CTRL_REG_VAL);
- ixgb_read_phy_reg(hw,
- IXGB_BCM8704_USER_CTRL_REG,
- IXGB_SUN_PHY_ADDRESS,
- IXGB_BCM8704_USER_DEV3_ADDR);
- ixgb_read_phy_reg(hw,
- IXGB_BCM8704_USER_CTRL_REG,
- IXGB_SUN_PHY_ADDRESS,
- IXGB_BCM8704_USER_DEV3_ADDR);
-
- /* SerDes needs extra delay */
- msleep(IXGB_SUN_PHY_RESET_DELAY);
-}