diff options
author | Jeff Kirsher | 2011-04-07 07:42:33 -0700 |
---|---|---|
committer | Jeff Kirsher | 2011-08-10 20:03:27 -0700 |
commit | dee1ad47f2ee75f5146d83ca757c1b7861c34c3b (patch) | |
tree | 47cbdefe3d0f9b729724e378ad6a96eaddfd5fbc /drivers/net/ixgb/ixgb_hw.c | |
parent | f7917c009c28c941ba151ee66f04dc7f6a2e1e0b (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.c | 1262 |
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); -} |