diff options
Diffstat (limited to 'bsps/powerpc/beatnik/net/if_em/if_em_hw.c')
| -rw-r--r-- | bsps/powerpc/beatnik/net/if_em/if_em_hw.c | 6620 |
1 files changed, 0 insertions, 6620 deletions
diff --git a/bsps/powerpc/beatnik/net/if_em/if_em_hw.c b/bsps/powerpc/beatnik/net/if_em/if_em_hw.c deleted file mode 100644 index e200a6c7fe..0000000000 --- a/bsps/powerpc/beatnik/net/if_em/if_em_hw.c +++ /dev/null @@ -1,6620 +0,0 @@ -/******************************************************************************* - - Copyright (c) 2001-2005, Intel Corporation - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - - 1. Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - - 2. Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - 3. Neither the name of the Intel Corporation nor the names of its - contributors may be used to endorse or promote products derived from - this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - POSSIBILITY OF SUCH DAMAGE. - -*******************************************************************************/ - -/* if_em_hw.c - * Shared functions for accessing and configuring the MAC - */ - -#include <sys/cdefs.h> -#ifdef __rtems__ -#include "rtemscompat_defs.h" -#include "../porting/rtemscompat.h" -#include "if_em_hw.h" -#else -__FBSDID("$FreeBSD: /repoman/r/ncvs/src/sys/dev/em/if_em_hw.c,v 1.16 2005/05/26 23:32:02 tackerman Exp $"); - -#include <dev/em/if_em_hw.h> -#endif - -static int32_t em_set_phy_type(struct em_hw *hw); -static void em_phy_init_script(struct em_hw *hw); -static int32_t em_setup_copper_link(struct em_hw *hw); -static int32_t em_setup_fiber_serdes_link(struct em_hw *hw); -static int32_t em_adjust_serdes_amplitude(struct em_hw *hw); -static int32_t em_phy_force_speed_duplex(struct em_hw *hw); -static int32_t em_config_mac_to_phy(struct em_hw *hw); -static void em_raise_mdi_clk(struct em_hw *hw, uint32_t *ctrl); -static void em_lower_mdi_clk(struct em_hw *hw, uint32_t *ctrl); -static void em_shift_out_mdi_bits(struct em_hw *hw, uint32_t data, - uint16_t count); -static uint16_t em_shift_in_mdi_bits(struct em_hw *hw); -static int32_t em_phy_reset_dsp(struct em_hw *hw); -static int32_t em_write_eeprom_spi(struct em_hw *hw, uint16_t offset, - uint16_t words, uint16_t *data); -static int32_t em_write_eeprom_microwire(struct em_hw *hw, - uint16_t offset, uint16_t words, - uint16_t *data); -static int32_t em_spi_eeprom_ready(struct em_hw *hw); -static void em_raise_ee_clk(struct em_hw *hw, uint32_t *eecd); -static void em_lower_ee_clk(struct em_hw *hw, uint32_t *eecd); -static void em_shift_out_ee_bits(struct em_hw *hw, uint16_t data, - uint16_t count); -static int32_t em_write_phy_reg_ex(struct em_hw *hw, uint32_t reg_addr, - uint16_t phy_data); -static int32_t em_read_phy_reg_ex(struct em_hw *hw,uint32_t reg_addr, - uint16_t *phy_data); -static uint16_t em_shift_in_ee_bits(struct em_hw *hw, uint16_t count); -static int32_t em_acquire_eeprom(struct em_hw *hw); -static void em_release_eeprom(struct em_hw *hw); -static void em_standby_eeprom(struct em_hw *hw); -static int32_t em_set_vco_speed(struct em_hw *hw); -static int32_t em_polarity_reversal_workaround(struct em_hw *hw); -static int32_t em_set_phy_mode(struct em_hw *hw); -static int32_t em_host_if_read_cookie(struct em_hw *hw, uint8_t *buffer); -static uint8_t em_calculate_mng_checksum(char *buffer, uint32_t length); - -/* IGP cable length table */ -static const -uint16_t em_igp_cable_length_table[IGP01E1000_AGC_LENGTH_TABLE_SIZE] = - { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 10, 10, 10, 10, 10, 10, 10, 20, 20, 20, 20, 20, 25, 25, 25, - 25, 25, 25, 25, 30, 30, 30, 30, 40, 40, 40, 40, 40, 40, 40, 40, - 40, 50, 50, 50, 50, 50, 50, 50, 60, 60, 60, 60, 60, 60, 60, 60, - 60, 70, 70, 70, 70, 70, 70, 80, 80, 80, 80, 80, 80, 90, 90, 90, - 90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, - 100, 100, 100, 100, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, - 110, 110, 110, 110, 110, 110, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120}; - -/****************************************************************************** - * Set the phy type member in the hw struct. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_set_phy_type(struct em_hw *hw) -{ - DEBUGFUNC("em_set_phy_type"); - - if(hw->mac_type == em_undefined) - return -E1000_ERR_PHY_TYPE; - - switch(hw->phy_id) { - case M88E1000_E_PHY_ID: - case M88E1000_I_PHY_ID: - case M88E1011_I_PHY_ID: - case M88E1111_I_PHY_ID: - hw->phy_type = em_phy_m88; - break; - case IGP01E1000_I_PHY_ID: - if(hw->mac_type == em_82541 || - hw->mac_type == em_82541_rev_2 || - hw->mac_type == em_82547 || - hw->mac_type == em_82547_rev_2) { - hw->phy_type = em_phy_igp; - break; - } - /* Fall Through */ - default: - /* Should never have loaded on this device */ - hw->phy_type = em_phy_undefined; - return -E1000_ERR_PHY_TYPE; - } - - return E1000_SUCCESS; -} - -/****************************************************************************** - * IGP phy init script - initializes the GbE PHY - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -static void -em_phy_init_script(struct em_hw *hw) -{ - uint16_t phy_saved_data; - - DEBUGFUNC("em_phy_init_script"); - - if(hw->phy_init_script) { - msec_delay(20); - - /* Save off the current value of register 0x2F5B to be restored at - * the end of this routine. */ - em_read_phy_reg(hw, 0x2F5B, &phy_saved_data); - - /* Disabled the PHY transmitter */ - em_write_phy_reg(hw, 0x2F5B, 0x0003); - - msec_delay(20); - - em_write_phy_reg(hw,0x0000,0x0140); - - msec_delay(5); - - switch(hw->mac_type) { - case em_82541: - case em_82547: - em_write_phy_reg(hw, 0x1F95, 0x0001); - - em_write_phy_reg(hw, 0x1F71, 0xBD21); - - em_write_phy_reg(hw, 0x1F79, 0x0018); - - em_write_phy_reg(hw, 0x1F30, 0x1600); - - em_write_phy_reg(hw, 0x1F31, 0x0014); - - em_write_phy_reg(hw, 0x1F32, 0x161C); - - em_write_phy_reg(hw, 0x1F94, 0x0003); - - em_write_phy_reg(hw, 0x1F96, 0x003F); - - em_write_phy_reg(hw, 0x2010, 0x0008); - break; - - case em_82541_rev_2: - case em_82547_rev_2: - em_write_phy_reg(hw, 0x1F73, 0x0099); - break; - default: - break; - } - - em_write_phy_reg(hw, 0x0000, 0x3300); - - msec_delay(20); - - /* Now enable the transmitter */ - em_write_phy_reg(hw, 0x2F5B, phy_saved_data); - - if(hw->mac_type == em_82547) { - uint16_t fused, fine, coarse; - - /* Move to analog registers page */ - em_read_phy_reg(hw, IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused); - - if(!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) { - em_read_phy_reg(hw, IGP01E1000_ANALOG_FUSE_STATUS, &fused); - - fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK; - coarse = fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK; - - if(coarse > IGP01E1000_ANALOG_FUSE_COARSE_THRESH) { - coarse -= IGP01E1000_ANALOG_FUSE_COARSE_10; - fine -= IGP01E1000_ANALOG_FUSE_FINE_1; - } else if(coarse == IGP01E1000_ANALOG_FUSE_COARSE_THRESH) - fine -= IGP01E1000_ANALOG_FUSE_FINE_10; - - fused = (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) | - (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) | - (coarse & IGP01E1000_ANALOG_FUSE_COARSE_MASK); - - em_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_CONTROL, fused); - em_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_BYPASS, - IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL); - } - } - } -} - -/****************************************************************************** - * Set the mac type member in the hw struct. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_set_mac_type(struct em_hw *hw) -{ - DEBUGFUNC("em_set_mac_type"); - - switch (hw->device_id) { - case E1000_DEV_ID_82542: - switch (hw->revision_id) { - case E1000_82542_2_0_REV_ID: - hw->mac_type = em_82542_rev2_0; - break; - case E1000_82542_2_1_REV_ID: - hw->mac_type = em_82542_rev2_1; - break; - default: - /* Invalid 82542 revision ID */ - return -E1000_ERR_MAC_TYPE; - } - break; - case E1000_DEV_ID_82543GC_FIBER: - case E1000_DEV_ID_82543GC_COPPER: - hw->mac_type = em_82543; - break; - case E1000_DEV_ID_82544EI_COPPER: - case E1000_DEV_ID_82544EI_FIBER: - case E1000_DEV_ID_82544GC_COPPER: - case E1000_DEV_ID_82544GC_LOM: - hw->mac_type = em_82544; - break; - case E1000_DEV_ID_82540EM: - case E1000_DEV_ID_82540EM_LOM: - case E1000_DEV_ID_82540EP: - case E1000_DEV_ID_82540EP_LOM: - case E1000_DEV_ID_82540EP_LP: - hw->mac_type = em_82540; - break; - case E1000_DEV_ID_82545EM_COPPER: - case E1000_DEV_ID_82545EM_FIBER: - hw->mac_type = em_82545; - break; - case E1000_DEV_ID_82545GM_COPPER: - case E1000_DEV_ID_82545GM_FIBER: - case E1000_DEV_ID_82545GM_SERDES: - hw->mac_type = em_82545_rev_3; - break; - case E1000_DEV_ID_82546EB_COPPER: - case E1000_DEV_ID_82546EB_FIBER: - case E1000_DEV_ID_82546EB_QUAD_COPPER: - hw->mac_type = em_82546; - break; - case E1000_DEV_ID_82546GB_COPPER: - case E1000_DEV_ID_82546GB_FIBER: - case E1000_DEV_ID_82546GB_SERDES: - case E1000_DEV_ID_82546GB_PCIE: - case E1000_DEV_ID_82546GB_QUAD_COPPER: - hw->mac_type = em_82546_rev_3; - break; - case E1000_DEV_ID_82541EI: - case E1000_DEV_ID_82541ER_LOM: - case E1000_DEV_ID_82541EI_MOBILE: - hw->mac_type = em_82541; - break; - case E1000_DEV_ID_82541ER: - case E1000_DEV_ID_82541GI: - case E1000_DEV_ID_82541GI_LF: - case E1000_DEV_ID_82541GI_MOBILE: - hw->mac_type = em_82541_rev_2; - break; - case E1000_DEV_ID_82547EI: - case E1000_DEV_ID_82547EI_MOBILE: - hw->mac_type = em_82547; - break; - case E1000_DEV_ID_82547GI: - hw->mac_type = em_82547_rev_2; - break; - case E1000_DEV_ID_82573E: - case E1000_DEV_ID_82573E_IAMT: - hw->mac_type = em_82573; - break; - default: - /* Should never have loaded on this device */ - return -E1000_ERR_MAC_TYPE; - } - - switch(hw->mac_type) { - case em_82573: - hw->eeprom_semaphore_present = TRUE; - /* fall through */ - case em_82541: - case em_82547: - case em_82541_rev_2: - case em_82547_rev_2: - hw->asf_firmware_present = TRUE; - break; - default: - break; - } - - return E1000_SUCCESS; -} - -/***************************************************************************** - * Set media type and TBI compatibility. - * - * hw - Struct containing variables accessed by shared code - * **************************************************************************/ -void -em_set_media_type(struct em_hw *hw) -{ - uint32_t status; - - DEBUGFUNC("em_set_media_type"); - - if(hw->mac_type != em_82543) { - /* tbi_compatibility is only valid on 82543 */ - hw->tbi_compatibility_en = FALSE; - } - - switch (hw->device_id) { - case E1000_DEV_ID_82545GM_SERDES: - case E1000_DEV_ID_82546GB_SERDES: - hw->media_type = em_media_type_internal_serdes; - break; - default: - if(hw->mac_type >= em_82543) { - status = E1000_READ_REG(hw, STATUS); - if(status & E1000_STATUS_TBIMODE) { - hw->media_type = em_media_type_fiber; - /* tbi_compatibility not valid on fiber */ - hw->tbi_compatibility_en = FALSE; - } else { - hw->media_type = em_media_type_copper; - } - } else { - /* This is an 82542 (fiber only) */ - hw->media_type = em_media_type_fiber; - } - } -} - -/****************************************************************************** - * Reset the transmit and receive units; mask and clear all interrupts. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_reset_hw(struct em_hw *hw) -{ - uint32_t ctrl; - uint32_t ctrl_ext; - uint32_t manc; - uint32_t led_ctrl; - uint32_t timeout; - uint32_t extcnf_ctrl; - int32_t ret_val; - - DEBUGFUNC("em_reset_hw"); - - /* For 82542 (rev 2.0), disable MWI before issuing a device reset */ - if(hw->mac_type == em_82542_rev2_0) { - DEBUGOUT("Disabling MWI on 82542 rev 2.0\n"); - em_pci_clear_mwi(hw); - } - - if(hw->bus_type == em_bus_type_pci_express) { - /* Prevent the PCI-E bus from sticking if there is no TLP connection - * on the last TLP read/write transaction when MAC is reset. - */ - if(em_disable_pciex_master(hw) != E1000_SUCCESS) { - DEBUGOUT("PCI-E Master disable polling has failed.\n"); - } - } - - /* Clear interrupt mask to stop board from generating interrupts */ - DEBUGOUT("Masking off all interrupts\n"); - E1000_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. - */ - E1000_WRITE_REG(hw, RCTL, 0); - E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP); - E1000_WRITE_FLUSH(hw); - - /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */ - hw->tbi_compatibility_on = FALSE; - - /* Delay to allow any outstanding PCI transactions to complete before - * resetting the device - */ - msec_delay(10); - - ctrl = E1000_READ_REG(hw, CTRL); - - /* Must reset the PHY before resetting the MAC */ - if((hw->mac_type == em_82541) || (hw->mac_type == em_82547)) { - E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_PHY_RST)); - msec_delay(5); - } - - /* Must acquire the MDIO ownership before MAC reset. - * Ownership defaults to firmware after a reset. */ - if(hw->mac_type == em_82573) { - timeout = 10; - - extcnf_ctrl = E1000_READ_REG(hw, EXTCNF_CTRL); - extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP; - - do { - E1000_WRITE_REG(hw, EXTCNF_CTRL, extcnf_ctrl); - extcnf_ctrl = E1000_READ_REG(hw, EXTCNF_CTRL); - - if(extcnf_ctrl & E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP) - break; - else - extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP; - - msec_delay(2); - timeout--; - } while(timeout); - } - - /* 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. - */ - DEBUGOUT("Issuing a global reset to MAC\n"); - - switch(hw->mac_type) { - case em_82544: - case em_82540: - case em_82545: -#ifndef __arm__ - case em_82546: -#endif - case em_82541: - case em_82541_rev_2: - /* These controllers can't ack the 64-bit write when issuing the - * reset, so use IO-mapping as a workaround to issue the reset */ - E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST)); - break; - case em_82545_rev_3: - case em_82546_rev_3: - /* Reset is performed on a shadow of the control register */ - E1000_WRITE_REG(hw, CTRL_DUP, (ctrl | E1000_CTRL_RST)); - break; - default: - E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST)); - break; - } - - /* After MAC reset, force reload of EEPROM to restore power-on settings to - * device. Later controllers reload the EEPROM automatically, so just wait - * for reload to complete. - */ - switch(hw->mac_type) { - case em_82542_rev2_0: - case em_82542_rev2_1: - case em_82543: - case em_82544: - /* Wait for reset to complete */ - usec_delay(10); - ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); - ctrl_ext |= E1000_CTRL_EXT_EE_RST; - E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); - E1000_WRITE_FLUSH(hw); - /* Wait for EEPROM reload */ - msec_delay(2); - break; - case em_82541: - case em_82541_rev_2: - case em_82547: - case em_82547_rev_2: - /* Wait for EEPROM reload */ - msec_delay(20); - break; - case em_82573: - usec_delay(10); - ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); - ctrl_ext |= E1000_CTRL_EXT_EE_RST; - E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); - E1000_WRITE_FLUSH(hw); - /* fall through */ - ret_val = em_get_auto_rd_done(hw); - if(ret_val) - /* We don't want to continue accessing MAC registers. */ - return ret_val; - break; - default: - /* Wait for EEPROM reload (it happens automatically) */ - msec_delay(5); - break; - } - - /* Disable HW ARPs on ASF enabled adapters */ - if(hw->mac_type >= em_82540 && hw->mac_type <= em_82547_rev_2) { - manc = E1000_READ_REG(hw, MANC); - manc &= ~(E1000_MANC_ARP_EN); - E1000_WRITE_REG(hw, MANC, manc); - } - - if((hw->mac_type == em_82541) || (hw->mac_type == em_82547)) { - em_phy_init_script(hw); - - /* Configure activity LED after PHY reset */ - led_ctrl = E1000_READ_REG(hw, LEDCTL); - led_ctrl &= IGP_ACTIVITY_LED_MASK; - led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); - E1000_WRITE_REG(hw, LEDCTL, led_ctrl); - } - - /* Clear interrupt mask to stop board from generating interrupts */ - DEBUGOUT("Masking off all interrupts\n"); - E1000_WRITE_REG(hw, IMC, 0xffffffff); - - /* Clear any pending interrupt events. */ - E1000_READ_REG(hw, ICR); - - /* If MWI was previously enabled, reenable it. */ - if(hw->mac_type == em_82542_rev2_0) { - if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE) - em_pci_set_mwi(hw); - } -#ifdef __rtems__ - msec_delay(100); -#endif - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Performs basic configuration of the adapter. - * - * hw - Struct containing variables accessed by shared code - * - * Assumes that the controller has previously been reset and is in a - * post-reset uninitialized state. Initializes the receive address registers, - * multicast table, and VLAN filter table. Calls routines to setup link - * configuration and flow control settings. Clears all on-chip counters. Leaves - * the transmit and receive units disabled and uninitialized. - *****************************************************************************/ -int32_t -em_init_hw(struct em_hw *hw) -{ - uint32_t ctrl; - uint32_t i; - int32_t ret_val; - uint16_t pcix_cmd_word; - uint16_t pcix_stat_hi_word; - uint16_t cmd_mmrbc; - uint16_t stat_mmrbc; - uint32_t mta_size; - - DEBUGFUNC("em_init_hw"); - - /* Initialize Identification LED */ - ret_val = em_id_led_init(hw); - if(ret_val) { - DEBUGOUT("Error Initializing Identification LED\n"); - return ret_val; - } - - /* Set the media type and TBI compatibility */ - em_set_media_type(hw); - - /* Disabling VLAN filtering. */ - DEBUGOUT("Initializing the IEEE VLAN\n"); - if (hw->mac_type < em_82545_rev_3) - E1000_WRITE_REG(hw, VET, 0); - em_clear_vfta(hw); - - /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */ - if(hw->mac_type == em_82542_rev2_0) { - DEBUGOUT("Disabling MWI on 82542 rev 2.0\n"); - em_pci_clear_mwi(hw); - E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST); - E1000_WRITE_FLUSH(hw); - msec_delay(5); - } - - /* Setup the receive address. This involves initializing all of the Receive - * Address Registers (RARs 0 - 15). - */ - em_init_rx_addrs(hw); - - /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */ - if(hw->mac_type == em_82542_rev2_0) { - E1000_WRITE_REG(hw, RCTL, 0); - E1000_WRITE_FLUSH(hw); - msec_delay(1); - if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE) - em_pci_set_mwi(hw); - } - - /* Zero out the Multicast HASH table */ - DEBUGOUT("Zeroing the MTA\n"); - mta_size = E1000_MC_TBL_SIZE; - for(i = 0; i < mta_size; i++) - E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); - - /* Set the PCI priority bit correctly in the CTRL register. This - * determines if the adapter gives priority to receives, or if it - * gives equal priority to transmits and receives. Valid only on - * 82542 and 82543 silicon. - */ - if(hw->dma_fairness && hw->mac_type <= em_82543) { - ctrl = E1000_READ_REG(hw, CTRL); - E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PRIOR); - } - - switch(hw->mac_type) { - case em_82545_rev_3: - case em_82546_rev_3: - break; - default: - /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */ - if(hw->bus_type == em_bus_type_pcix) { - em_read_pci_cfg(hw, PCIX_COMMAND_REGISTER, &pcix_cmd_word); - em_read_pci_cfg(hw, PCIX_STATUS_REGISTER_HI, - &pcix_stat_hi_word); - cmd_mmrbc = (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >> - PCIX_COMMAND_MMRBC_SHIFT; - stat_mmrbc = (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >> - PCIX_STATUS_HI_MMRBC_SHIFT; - if(stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K) - stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K; - if(cmd_mmrbc > stat_mmrbc) { - pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK; - pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT; - em_write_pci_cfg(hw, PCIX_COMMAND_REGISTER, - &pcix_cmd_word); - } - } - break; - } - - /* Call a subroutine to configure the link and setup flow control. */ - ret_val = em_setup_link(hw); - - /* Set the transmit descriptor write-back policy */ - if(hw->mac_type > em_82544) { - ctrl = E1000_READ_REG(hw, TXDCTL); - ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH) | E1000_TXDCTL_FULL_TX_DESC_WB; - switch (hw->mac_type) { - default: - break; - case em_82573: - ctrl |= E1000_TXDCTL_COUNT_DESC; - break; - } - E1000_WRITE_REG(hw, TXDCTL, ctrl); - } - - if (hw->mac_type == em_82573) { - em_enable_tx_pkt_filtering(hw); - } - - - /* Clear all of the statistics registers (clear on read). It is - * important that we do this after we have tried to establish link - * because the symbol error count will increment wildly if there - * is no link. - */ - em_clear_hw_cntrs(hw); - - return ret_val; -} - -/****************************************************************************** - * Adjust SERDES output amplitude based on EEPROM setting. - * - * hw - Struct containing variables accessed by shared code. - *****************************************************************************/ -static int32_t -em_adjust_serdes_amplitude(struct em_hw *hw) -{ - uint16_t eeprom_data; - int32_t ret_val; - - DEBUGFUNC("em_adjust_serdes_amplitude"); - - if(hw->media_type != em_media_type_internal_serdes) - return E1000_SUCCESS; - - switch(hw->mac_type) { - case em_82545_rev_3: - case em_82546_rev_3: - break; - default: - return E1000_SUCCESS; - } - - ret_val = em_read_eeprom(hw, EEPROM_SERDES_AMPLITUDE, 1, &eeprom_data); - if (ret_val) { - return ret_val; - } - - if(eeprom_data != EEPROM_RESERVED_WORD) { - /* Adjust SERDES output amplitude only. */ - eeprom_data &= EEPROM_SERDES_AMPLITUDE_MASK; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_EXT_CTRL, eeprom_data); - if(ret_val) - return ret_val; - } - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Configures flow control and link settings. - * - * hw - Struct containing variables accessed by shared code - * - * Determines which flow control settings to use. Calls the apropriate media- - * specific link configuration function. Configures the flow control settings. - * Assuming the adapter has a valid link partner, a valid link should be - * established. Assumes the hardware has previously been reset and the - * transmitter and receiver are not enabled. - *****************************************************************************/ -int32_t -em_setup_link(struct em_hw *hw) -{ - uint32_t ctrl_ext; - int32_t ret_val; - uint16_t eeprom_data; - - DEBUGFUNC("em_setup_link"); - - /* Read and store word 0x0F of the EEPROM. This word contains bits - * that determine the hardware's default PAUSE (flow control) mode, - * a bit that determines whether the HW defaults to enabling or - * disabling auto-negotiation, and the direction of the - * SW defined pins. If there is no SW over-ride of the flow - * control setting, then the variable hw->fc will - * be initialized based on a value in the EEPROM. - */ - if(em_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data)) { - DEBUGOUT("EEPROM Read Error\n"); - return -E1000_ERR_EEPROM; - } - - if(hw->fc == em_fc_default) { - if((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0) - hw->fc = em_fc_none; - else if((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == - EEPROM_WORD0F_ASM_DIR) - hw->fc = em_fc_tx_pause; - else - hw->fc = em_fc_full; - } - - /* 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. - */ - if(hw->mac_type == em_82542_rev2_0) - hw->fc &= (~em_fc_tx_pause); - - if((hw->mac_type < em_82543) && (hw->report_tx_early == 1)) - hw->fc &= (~em_fc_rx_pause); - - hw->original_fc = hw->fc; - - DEBUGOUT1("After fix-ups FlowControl is now = %x\n", hw->fc); - - /* Take the 4 bits from EEPROM word 0x0F that determine the initial - * polarity value for the SW controlled pins, and setup the - * Extended Device Control reg with that info. - * This is needed because one of the SW controlled pins is used for - * signal detection. So this should be done before em_setup_pcs_link() - * or em_phy_setup() is called. - */ - if(hw->mac_type == em_82543) { - ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) << - SWDPIO__EXT_SHIFT); - E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); - } - - /* Call the necessary subroutine to configure the link. */ - ret_val = (hw->media_type == em_media_type_copper) ? - em_setup_copper_link(hw) : - em_setup_fiber_serdes_link(hw); - - /* Initialize the flow control address, type, and PAUSE timer - * registers to their default values. This is done even if flow - * control is disabled, because it does not hurt anything to - * initialize these registers. - */ - DEBUGOUT("Initializing the Flow Control address, type and timer regs\n"); - - E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW); - E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH); - E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE); - - E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time); - - /* 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 & em_fc_tx_pause)) { - E1000_WRITE_REG(hw, FCRTL, 0); - E1000_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) { - E1000_WRITE_REG(hw, FCRTL, (hw->fc_low_water | E1000_FCRTL_XONE)); - E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water); - } else { - E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water); - E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water); - } - } - return ret_val; -} - -/****************************************************************************** - * Sets up link for a fiber based or serdes based adapter - * - * hw - Struct containing variables accessed by shared code - * - * Manipulates Physical Coding Sublayer functions in order to configure - * link. Assumes the hardware has been previously reset and the transmitter - * and receiver are not enabled. - *****************************************************************************/ -static int32_t -em_setup_fiber_serdes_link(struct em_hw *hw) -{ - uint32_t ctrl; - uint32_t status; - uint32_t txcw = 0; - uint32_t i; - uint32_t signal = 0; - int32_t ret_val; - - DEBUGFUNC("em_setup_fiber_serdes_link"); - - /* On adapters with a MAC newer than 82544, SW Defineable pin 1 will be - * set when the optics detect a signal. On older adapters, it will be - * cleared when there is a signal. This applies to fiber media only. - * If we're on serdes media, adjust the output amplitude to value set in - * the EEPROM. - */ - ctrl = E1000_READ_REG(hw, CTRL); - if(hw->media_type == em_media_type_fiber) - signal = (hw->mac_type > em_82544) ? E1000_CTRL_SWDPIN1 : 0; - - ret_val = em_adjust_serdes_amplitude(hw); - if(ret_val) - return ret_val; - - /* Take the link out of reset */ - ctrl &= ~(E1000_CTRL_LRST); - - /* Adjust VCO speed to improve BER performance */ - ret_val = em_set_vco_speed(hw); - if(ret_val) - return ret_val; - - em_config_collision_dist(hw); - - /* Check for a software override of the flow control settings, and setup - * the device accordingly. If auto-negotiation is enabled, then software - * will have to set the "PAUSE" bits to the correct value in the Tranmsit - * Config Word Register (TXCW) and re-start auto-negotiation. However, if - * auto-negotiation is disabled, then software will have to manually - * configure the two flow control enable bits in the CTRL register. - * - * The possible values of the "fc" 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. - */ - switch (hw->fc) { - case em_fc_none: - /* Flow control is completely disabled by a software over-ride. */ - txcw = (E1000_TXCW_ANE | E1000_TXCW_FD); - break; - case em_fc_rx_pause: - /* RX Flow control is enabled and TX Flow control is disabled by a - * software over-ride. Since there really isn't a way to advertise - * that we are capable of RX Pause ONLY, we will advertise that we - * support both symmetric and asymmetric RX PAUSE. Later, we will - * disable the adapter's ability to send PAUSE frames. - */ - txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); - break; - case em_fc_tx_pause: - /* TX Flow control is enabled, and RX Flow control is disabled, by a - * software over-ride. - */ - txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR); - break; - case em_fc_full: - /* Flow control (both RX and TX) is enabled by a software over-ride. */ - txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); - break; - default: - DEBUGOUT("Flow control param set incorrectly\n"); - return -E1000_ERR_CONFIG; - break; - } - - /* Since auto-negotiation is enabled, take the link out of reset (the link - * will be in reset, because we previously reset the chip). This will - * restart auto-negotiation. If auto-neogtiation is successful then the - * link-up status bit will be set and the flow control enable bits (RFCE - * and TFCE) will be set according to their negotiated value. - */ - DEBUGOUT("Auto-negotiation enabled\n"); - - E1000_WRITE_REG(hw, TXCW, txcw); - E1000_WRITE_REG(hw, CTRL, ctrl); - E1000_WRITE_FLUSH(hw); - - hw->txcw = txcw; - msec_delay(1); - - /* If we have a signal (the cable is plugged in) then poll for a "Link-Up" - * indication in the Device Status Register. Time-out if a link isn't - * seen in 500 milliseconds seconds (Auto-negotiation should complete in - * less than 500 milliseconds even if the other end is doing it in SW). - * For internal serdes, we just assume a signal is present, then poll. - */ - if(hw->media_type == em_media_type_internal_serdes || - (E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) { - DEBUGOUT("Looking for Link\n"); - for(i = 0; i < (LINK_UP_TIMEOUT / 10); i++) { - msec_delay(10); - status = E1000_READ_REG(hw, STATUS); - if(status & E1000_STATUS_LU) break; - } - if(i == (LINK_UP_TIMEOUT / 10)) { - DEBUGOUT("Never got a valid link from auto-neg!!!\n"); - hw->autoneg_failed = 1; - /* AutoNeg failed to achieve a link, so we'll call - * em_check_for_link. This routine will force the link up if - * we detect a signal. This will allow us to communicate with - * non-autonegotiating link partners. - */ - ret_val = em_check_for_link(hw); - if(ret_val) { - DEBUGOUT("Error while checking for link\n"); - return ret_val; - } - hw->autoneg_failed = 0; - } else { - hw->autoneg_failed = 0; - DEBUGOUT("Valid Link Found\n"); - } - } else { - DEBUGOUT("No Signal Detected\n"); - } - return E1000_SUCCESS; -} - -/****************************************************************************** -* Make sure we have a valid PHY and change PHY mode before link setup. -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -static int32_t -em_copper_link_preconfig(struct em_hw *hw) -{ - uint32_t ctrl; - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_copper_link_preconfig"); - - ctrl = E1000_READ_REG(hw, CTRL); - /* With 82543, we need to force speed and duplex on the MAC equal to what - * the PHY speed and duplex configuration is. In addition, we need to - * perform a hardware reset on the PHY to take it out of reset. - */ - if(hw->mac_type > em_82543) { - ctrl |= E1000_CTRL_SLU; - ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); - E1000_WRITE_REG(hw, CTRL, ctrl); - } else { - ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX | E1000_CTRL_SLU); - E1000_WRITE_REG(hw, CTRL, ctrl); - ret_val = em_phy_hw_reset(hw); - if(ret_val) - return ret_val; - } - - /* Make sure we have a valid PHY */ - ret_val = em_detect_gig_phy(hw); - if(ret_val) { - DEBUGOUT("Error, did not detect valid phy.\n"); - return ret_val; - } - DEBUGOUT1("Phy ID = %x \n", hw->phy_id); - - /* Set PHY to class A mode (if necessary) */ - ret_val = em_set_phy_mode(hw); - if(ret_val) - return ret_val; - - if((hw->mac_type == em_82545_rev_3) || - (hw->mac_type == em_82546_rev_3)) { - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); - phy_data |= 0x00000008; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); - } - - if(hw->mac_type <= em_82543 || - hw->mac_type == em_82541 || hw->mac_type == em_82547 || - hw->mac_type == em_82541_rev_2 || hw->mac_type == em_82547_rev_2) - hw->phy_reset_disable = FALSE; - - return E1000_SUCCESS; -} - - -/******************************************************************** -* Copper link setup for em_phy_igp series. -* -* hw - Struct containing variables accessed by shared code -*********************************************************************/ -static int32_t -em_copper_link_igp_setup(struct em_hw *hw) -{ - uint32_t led_ctrl; - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_copper_link_igp_setup"); - - if (hw->phy_reset_disable) - return E1000_SUCCESS; - - ret_val = em_phy_reset(hw); - if (ret_val) { - DEBUGOUT("Error Resetting the PHY\n"); - return ret_val; - } - - /* Wait 10ms for MAC to configure PHY from eeprom settings */ - msec_delay(15); - - /* Configure activity LED after PHY reset */ - led_ctrl = E1000_READ_REG(hw, LEDCTL); - led_ctrl &= IGP_ACTIVITY_LED_MASK; - led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); - E1000_WRITE_REG(hw, LEDCTL, led_ctrl); - - /* disable lplu d3 during driver init */ - ret_val = em_set_d3_lplu_state(hw, FALSE); - if (ret_val) { - DEBUGOUT("Error Disabling LPLU D3\n"); - return ret_val; - } - - /* disable lplu d0 during driver init */ - ret_val = em_set_d0_lplu_state(hw, FALSE); - if (ret_val) { - DEBUGOUT("Error Disabling LPLU D0\n"); - return ret_val; - } - /* Configure mdi-mdix settings */ - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); - if (ret_val) - return ret_val; - - if ((hw->mac_type == em_82541) || (hw->mac_type == em_82547)) { - hw->dsp_config_state = em_dsp_config_disabled; - /* Force MDI for earlier revs of the IGP PHY */ - phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX | IGP01E1000_PSCR_FORCE_MDI_MDIX); - hw->mdix = 1; - - } else { - hw->dsp_config_state = em_dsp_config_enabled; - phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; - - switch (hw->mdix) { - case 1: - phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; - break; - case 2: - phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX; - break; - case 0: - default: - phy_data |= IGP01E1000_PSCR_AUTO_MDIX; - break; - } - } - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); - if(ret_val) - return ret_val; - - /* set auto-master slave resolution settings */ - if(hw->autoneg) { - em_ms_type phy_ms_setting = hw->master_slave; - - if(hw->ffe_config_state == em_ffe_config_active) - hw->ffe_config_state = em_ffe_config_enabled; - - if(hw->dsp_config_state == em_dsp_config_activated) - hw->dsp_config_state = em_dsp_config_enabled; - - /* when autonegotiation advertisment is only 1000Mbps then we - * should disable SmartSpeed and enable Auto MasterSlave - * resolution as hardware default. */ - if(hw->autoneg_advertised == ADVERTISE_1000_FULL) { - /* Disable SmartSpeed */ - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); - if(ret_val) - return ret_val; - phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; - ret_val = em_write_phy_reg(hw, - IGP01E1000_PHY_PORT_CONFIG, - phy_data); - if(ret_val) - return ret_val; - /* Set auto Master/Slave resolution process */ - ret_val = em_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data); - if(ret_val) - return ret_val; - phy_data &= ~CR_1000T_MS_ENABLE; - ret_val = em_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); - if(ret_val) - return ret_val; - } - - ret_val = em_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data); - if(ret_val) - return ret_val; - - /* load defaults for future use */ - hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ? - ((phy_data & CR_1000T_MS_VALUE) ? - em_ms_force_master : - em_ms_force_slave) : - em_ms_auto; - - switch (phy_ms_setting) { - case em_ms_force_master: - phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE); - break; - case em_ms_force_slave: - phy_data |= CR_1000T_MS_ENABLE; - phy_data &= ~(CR_1000T_MS_VALUE); - break; - case em_ms_auto: - phy_data &= ~CR_1000T_MS_ENABLE; - default: - break; - } - ret_val = em_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); - if(ret_val) - return ret_val; - } - - return E1000_SUCCESS; -} - - -/******************************************************************** -* Copper link setup for em_phy_m88 series. -* -* hw - Struct containing variables accessed by shared code -*********************************************************************/ -static int32_t -em_copper_link_mgp_setup(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_copper_link_mgp_setup"); - - if(hw->phy_reset_disable) - return E1000_SUCCESS; - - /* Enable CRS on TX. This must be set for half-duplex operation. */ - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); - if(ret_val) - return ret_val; - - phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; - - /* Options: - * MDI/MDI-X = 0 (default) - * 0 - Auto for all speeds - * 1 - MDI mode - * 2 - MDI-X mode - * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) - */ - phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; - - switch (hw->mdix) { - case 1: - phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; - break; - case 2: - phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; - break; - case 3: - phy_data |= M88E1000_PSCR_AUTO_X_1000T; - break; - case 0: - default: - phy_data |= M88E1000_PSCR_AUTO_X_MODE; - break; - } - - /* Options: - * disable_polarity_correction = 0 (default) - * Automatic Correction for Reversed Cable Polarity - * 0 - Disabled - * 1 - Enabled - */ - phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; - if(hw->disable_polarity_correction == 1) - phy_data |= M88E1000_PSCR_POLARITY_REVERSAL; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); - if(ret_val) - return ret_val; - - /* Force TX_CLK in the Extended PHY Specific Control Register - * to 25MHz clock. - */ - ret_val = em_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data); - if(ret_val) - return ret_val; - - phy_data |= M88E1000_EPSCR_TX_CLK_25; - - if (hw->phy_revision < M88E1011_I_REV_4) { - /* Configure Master and Slave downshift values */ - phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK | - M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK); - phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X | - M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X); - ret_val = em_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data); - if(ret_val) - return ret_val; - } - - /* SW Reset the PHY so all changes take effect */ - ret_val = em_phy_reset(hw); - if(ret_val) { - DEBUGOUT("Error Resetting the PHY\n"); - return ret_val; - } - - return E1000_SUCCESS; -} - -/******************************************************************** -* Setup auto-negotiation and flow control advertisements, -* and then perform auto-negotiation. -* -* hw - Struct containing variables accessed by shared code -*********************************************************************/ -static int32_t -em_copper_link_autoneg(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_copper_link_autoneg"); - - /* Perform some bounds checking on the hw->autoneg_advertised - * parameter. If this variable is zero, then set it to the default. - */ - hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT; - - /* If autoneg_advertised is zero, we assume it was not defaulted - * by the calling code so we set to advertise full capability. - */ - if(hw->autoneg_advertised == 0) - hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT; - - DEBUGOUT("Reconfiguring auto-neg advertisement params\n"); - ret_val = em_phy_setup_autoneg(hw); - if(ret_val) { - DEBUGOUT("Error Setting up Auto-Negotiation\n"); - return ret_val; - } - DEBUGOUT("Restarting Auto-Neg\n"); - - /* Restart auto-negotiation by setting the Auto Neg Enable bit and - * the Auto Neg Restart bit in the PHY control register. - */ - ret_val = em_read_phy_reg(hw, PHY_CTRL, &phy_data); - if(ret_val) - return ret_val; - - phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); - ret_val = em_write_phy_reg(hw, PHY_CTRL, phy_data); - if(ret_val) - return ret_val; - - /* Does the user want to wait for Auto-Neg to complete here, or - * check at a later time (for example, callback routine). - */ - if(hw->wait_autoneg_complete) { - ret_val = em_wait_autoneg(hw); - if(ret_val) { - DEBUGOUT("Error while waiting for autoneg to complete\n"); - return ret_val; - } - } - - hw->get_link_status = TRUE; - - return E1000_SUCCESS; -} - - -/****************************************************************************** -* Config the MAC and the PHY after link is up. -* 1) Set up the MAC to the current PHY speed/duplex -* if we are on 82543. If we -* are on newer silicon, we only need to configure -* collision distance in the Transmit Control Register. -* 2) Set up flow control on the MAC to that established with -* the link partner. -* 3) Config DSP to improve Gigabit link quality for some PHY revisions. -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -static int32_t -em_copper_link_postconfig(struct em_hw *hw) -{ - int32_t ret_val; - DEBUGFUNC("em_copper_link_postconfig"); - - if(hw->mac_type >= em_82544) { - em_config_collision_dist(hw); - } else { - ret_val = em_config_mac_to_phy(hw); - if(ret_val) { - DEBUGOUT("Error configuring MAC to PHY settings\n"); - return ret_val; - } - } - ret_val = em_config_fc_after_link_up(hw); - if(ret_val) { - DEBUGOUT("Error Configuring Flow Control\n"); - return ret_val; - } - - /* Config DSP to improve Giga link quality */ - if(hw->phy_type == em_phy_igp) { - ret_val = em_config_dsp_after_link_change(hw, TRUE); - if(ret_val) { - DEBUGOUT("Error Configuring DSP after link up\n"); - return ret_val; - } - } - - return E1000_SUCCESS; -} - -/****************************************************************************** -* Detects which PHY is present and setup the speed and duplex -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -static int32_t -em_setup_copper_link(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t i; - uint16_t phy_data; - - DEBUGFUNC("em_setup_copper_link"); - - /* Check if it is a valid PHY and set PHY mode if necessary. */ - ret_val = em_copper_link_preconfig(hw); - if(ret_val) - return ret_val; - - if (hw->phy_type == em_phy_igp || - hw->phy_type == em_phy_igp_2) { - ret_val = em_copper_link_igp_setup(hw); - if(ret_val) - return ret_val; - } else if (hw->phy_type == em_phy_m88) { - ret_val = em_copper_link_mgp_setup(hw); - if(ret_val) - return ret_val; - } - - if(hw->autoneg) { - /* Setup autoneg and flow control advertisement - * and perform autonegotiation */ - ret_val = em_copper_link_autoneg(hw); - if(ret_val) - return ret_val; - } else { - /* PHY will be set to 10H, 10F, 100H,or 100F - * depending on value from forced_speed_duplex. */ - DEBUGOUT("Forcing speed and duplex\n"); - ret_val = em_phy_force_speed_duplex(hw); - if(ret_val) { - DEBUGOUT("Error Forcing Speed and Duplex\n"); - return ret_val; - } - } - - /* Check link status. Wait up to 100 microseconds for link to become - * valid. - */ - for(i = 0; i < 10; i++) { - ret_val = em_read_phy_reg(hw, PHY_STATUS, &phy_data); - if(ret_val) - return ret_val; - ret_val = em_read_phy_reg(hw, PHY_STATUS, &phy_data); - if(ret_val) - return ret_val; - - if(phy_data & MII_SR_LINK_STATUS) { - /* Config the MAC and PHY after link is up */ - ret_val = em_copper_link_postconfig(hw); - if(ret_val) - return ret_val; - - DEBUGOUT("Valid link established!!!\n"); - return E1000_SUCCESS; - } - usec_delay(10); - } - - DEBUGOUT("Unable to establish link!!!\n"); - return E1000_SUCCESS; -} - -/****************************************************************************** -* Configures PHY autoneg and flow control advertisement settings -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -int32_t -em_phy_setup_autoneg(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t mii_autoneg_adv_reg; - uint16_t mii_1000t_ctrl_reg; - - DEBUGFUNC("em_phy_setup_autoneg"); - - /* Read the MII Auto-Neg Advertisement Register (Address 4). */ - ret_val = em_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg); - if(ret_val) - return ret_val; - - /* Read the MII 1000Base-T Control Register (Address 9). */ - ret_val = em_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg); - if(ret_val) - return ret_val; - - /* Need to parse both autoneg_advertised and fc and set up - * the appropriate PHY registers. First we will parse for - * autoneg_advertised software override. Since we can advertise - * a plethora of combinations, we need to check each bit - * individually. - */ - - /* First we clear all the 10/100 mb speed bits in the Auto-Neg - * Advertisement Register (Address 4) and the 1000 mb speed bits in - * the 1000Base-T Control Register (Address 9). - */ - mii_autoneg_adv_reg &= ~REG4_SPEED_MASK; - mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK; - - DEBUGOUT1("autoneg_advertised %x\n", hw->autoneg_advertised); - - /* Do we want to advertise 10 Mb Half Duplex? */ - if(hw->autoneg_advertised & ADVERTISE_10_HALF) { - DEBUGOUT("Advertise 10mb Half duplex\n"); - mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS; - } - - /* Do we want to advertise 10 Mb Full Duplex? */ - if(hw->autoneg_advertised & ADVERTISE_10_FULL) { - DEBUGOUT("Advertise 10mb Full duplex\n"); - mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS; - } - - /* Do we want to advertise 100 Mb Half Duplex? */ - if(hw->autoneg_advertised & ADVERTISE_100_HALF) { - DEBUGOUT("Advertise 100mb Half duplex\n"); - mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS; - } - - /* Do we want to advertise 100 Mb Full Duplex? */ - if(hw->autoneg_advertised & ADVERTISE_100_FULL) { - DEBUGOUT("Advertise 100mb Full duplex\n"); - mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS; - } - - /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ - if(hw->autoneg_advertised & ADVERTISE_1000_HALF) { - DEBUGOUT("Advertise 1000mb Half duplex requested, request denied!\n"); - } - - /* Do we want to advertise 1000 Mb Full Duplex? */ - if(hw->autoneg_advertised & ADVERTISE_1000_FULL) { - DEBUGOUT("Advertise 1000mb Full duplex\n"); - mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS; - } - - /* Check for a software override of the flow control settings, and - * setup the PHY advertisement registers accordingly. If - * auto-negotiation is enabled, then software will have to set the - * "PAUSE" bits to the correct value in the Auto-Negotiation - * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation. - * - * The possible values of the "fc" 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: No software override. The flow control configuration - * in the EEPROM is used. - */ - switch (hw->fc) { - case em_fc_none: /* 0 */ - /* Flow control (RX & TX) is completely disabled by a - * software over-ride. - */ - mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); - break; - case em_fc_rx_pause: /* 1 */ - /* RX Flow control is enabled, and TX Flow control is - * disabled, by a software over-ride. - */ - /* Since there really isn't a way to advertise that we are - * capable of RX Pause ONLY, we will advertise that we - * support both symmetric and asymmetric RX PAUSE. Later - * (in em_config_fc_after_link_up) we will disable the - *hw's ability to send PAUSE frames. - */ - mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); - break; - case em_fc_tx_pause: /* 2 */ - /* TX Flow control is enabled, and RX Flow control is - * disabled, by a software over-ride. - */ - mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR; - mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE; - break; - case em_fc_full: /* 3 */ - /* Flow control (both RX and TX) is enabled by a software - * over-ride. - */ - mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); - break; - default: - DEBUGOUT("Flow control param set incorrectly\n"); - return -E1000_ERR_CONFIG; - } - - ret_val = em_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg); - if(ret_val) - return ret_val; - - DEBUGOUT1("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg); - - ret_val = em_write_phy_reg(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg); - if(ret_val) - return ret_val; - - return E1000_SUCCESS; -} - -/****************************************************************************** -* Force PHY speed and duplex settings to hw->forced_speed_duplex -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -static int32_t -em_phy_force_speed_duplex(struct em_hw *hw) -{ - uint32_t ctrl; - int32_t ret_val; - uint16_t mii_ctrl_reg; - uint16_t mii_status_reg; - uint16_t phy_data; - uint16_t i; - - DEBUGFUNC("em_phy_force_speed_duplex"); - - /* Turn off Flow control if we are forcing speed and duplex. */ - hw->fc = em_fc_none; - - DEBUGOUT1("hw->fc = %d\n", hw->fc); - - /* Read the Device Control Register. */ - ctrl = E1000_READ_REG(hw, CTRL); - - /* Set the bits to Force Speed and Duplex in the Device Ctrl Reg. */ - ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); - ctrl &= ~(DEVICE_SPEED_MASK); - - /* Clear the Auto Speed Detect Enable bit. */ - ctrl &= ~E1000_CTRL_ASDE; - - /* Read the MII Control Register. */ - ret_val = em_read_phy_reg(hw, PHY_CTRL, &mii_ctrl_reg); - if(ret_val) - return ret_val; - - /* We need to disable autoneg in order to force link and duplex. */ - - mii_ctrl_reg &= ~MII_CR_AUTO_NEG_EN; - - /* Are we forcing Full or Half Duplex? */ - if(hw->forced_speed_duplex == em_100_full || - hw->forced_speed_duplex == em_10_full) { - /* We want to force full duplex so we SET the full duplex bits in the - * Device and MII Control Registers. - */ - ctrl |= E1000_CTRL_FD; - mii_ctrl_reg |= MII_CR_FULL_DUPLEX; - DEBUGOUT("Full Duplex\n"); - } else { - /* We want to force half duplex so we CLEAR the full duplex bits in - * the Device and MII Control Registers. - */ - ctrl &= ~E1000_CTRL_FD; - mii_ctrl_reg &= ~MII_CR_FULL_DUPLEX; - DEBUGOUT("Half Duplex\n"); - } - - /* Are we forcing 100Mbps??? */ - if(hw->forced_speed_duplex == em_100_full || - hw->forced_speed_duplex == em_100_half) { - /* Set the 100Mb bit and turn off the 1000Mb and 10Mb bits. */ - ctrl |= E1000_CTRL_SPD_100; - mii_ctrl_reg |= MII_CR_SPEED_100; - mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10); - DEBUGOUT("Forcing 100mb "); - } else { - /* Set the 10Mb bit and turn off the 1000Mb and 100Mb bits. */ - ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100); - mii_ctrl_reg |= MII_CR_SPEED_10; - mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100); - DEBUGOUT("Forcing 10mb "); - } - - em_config_collision_dist(hw); - - /* Write the configured values back to the Device Control Reg. */ - E1000_WRITE_REG(hw, CTRL, ctrl); - - if (hw->phy_type == em_phy_m88) { - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); - if(ret_val) - return ret_val; - - /* Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI - * forced whenever speed are duplex are forced. - */ - phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); - if(ret_val) - return ret_val; - - DEBUGOUT1("M88E1000 PSCR: %x \n", phy_data); - - /* Need to reset the PHY or these changes will be ignored */ - mii_ctrl_reg |= MII_CR_RESET; - } else { - /* Clear Auto-Crossover to force MDI manually. IGP requires MDI - * forced whenever speed or duplex are forced. - */ - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); - if(ret_val) - return ret_val; - - phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; - phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; - - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); - if(ret_val) - return ret_val; - } - - /* Write back the modified PHY MII control register. */ - ret_val = em_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg); - if(ret_val) - return ret_val; - - usec_delay(1); - - /* The wait_autoneg_complete flag may be a little misleading here. - * Since we are forcing speed and duplex, Auto-Neg is not enabled. - * But we do want to delay for a period while forcing only so we - * don't generate false No Link messages. So we will wait here - * only if the user has set wait_autoneg_complete to 1, which is - * the default. - */ - if(hw->wait_autoneg_complete) { - /* We will wait for autoneg to complete. */ - DEBUGOUT("Waiting for forced speed/duplex link.\n"); - mii_status_reg = 0; - - /* We will wait for autoneg to complete or 4.5 seconds to expire. */ - for(i = PHY_FORCE_TIME; i > 0; i--) { - /* Read the MII Status Register and wait for Auto-Neg Complete bit - * to be set. - */ - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - - if(mii_status_reg & MII_SR_LINK_STATUS) break; - msec_delay(100); - } - if((i == 0) && - (hw->phy_type == em_phy_m88)) { - /* We didn't get link. Reset the DSP and wait again for link. */ - ret_val = em_phy_reset_dsp(hw); - if(ret_val) { - DEBUGOUT("Error Resetting PHY DSP\n"); - return ret_val; - } - } - /* This loop will early-out if the link condition has been met. */ - for(i = PHY_FORCE_TIME; i > 0; i--) { - if(mii_status_reg & MII_SR_LINK_STATUS) break; - msec_delay(100); - /* Read the MII Status Register and wait for Auto-Neg Complete bit - * to be set. - */ - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - } - } - - if (hw->phy_type == em_phy_m88) { - /* Because we reset the PHY above, we need to re-force TX_CLK in the - * Extended PHY Specific Control Register to 25MHz clock. This value - * defaults back to a 2.5MHz clock when the PHY is reset. - */ - ret_val = em_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data); - if(ret_val) - return ret_val; - - phy_data |= M88E1000_EPSCR_TX_CLK_25; - ret_val = em_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data); - if(ret_val) - return ret_val; - - /* In addition, because of the s/w reset above, we need to enable CRS on - * TX. This must be set for both full and half duplex operation. - */ - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); - if(ret_val) - return ret_val; - - phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); - if(ret_val) - return ret_val; - - if((hw->mac_type == em_82544 || hw->mac_type == em_82543) && - (!hw->autoneg) && - (hw->forced_speed_duplex == em_10_full || - hw->forced_speed_duplex == em_10_half)) { - ret_val = em_polarity_reversal_workaround(hw); - if(ret_val) - return ret_val; - } - } - return E1000_SUCCESS; -} - -/****************************************************************************** -* Sets the collision distance in the Transmit Control register -* -* hw - Struct containing variables accessed by shared code -* -* Link should have been established previously. Reads the speed and duplex -* information from the Device Status register. -******************************************************************************/ -void -em_config_collision_dist(struct em_hw *hw) -{ - uint32_t tctl; - - DEBUGFUNC("em_config_collision_dist"); - - tctl = E1000_READ_REG(hw, TCTL); - - tctl &= ~E1000_TCTL_COLD; - tctl |= E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT; - - E1000_WRITE_REG(hw, TCTL, tctl); - E1000_WRITE_FLUSH(hw); -} - -/****************************************************************************** -* Sets MAC speed and duplex settings to reflect the those in the PHY -* -* hw - Struct containing variables accessed by shared code -* mii_reg - data to write to the MII control register -* -* The contents of the PHY register containing the needed information need to -* be passed in. -******************************************************************************/ -static int32_t -em_config_mac_to_phy(struct em_hw *hw) -{ - uint32_t ctrl; - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_config_mac_to_phy"); - - /* 82544 or newer MAC, Auto Speed Detection takes care of - * MAC speed/duplex configuration.*/ - if (hw->mac_type >= em_82544) - return E1000_SUCCESS; - - /* Read the Device Control Register and set the bits to Force Speed - * and Duplex. - */ - ctrl = E1000_READ_REG(hw, CTRL); - ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); - ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS); - - /* Set up duplex in the Device Control and Transmit Control - * registers depending on negotiated values. - */ - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); - if(ret_val) - return ret_val; - - if(phy_data & M88E1000_PSSR_DPLX) - ctrl |= E1000_CTRL_FD; - else - ctrl &= ~E1000_CTRL_FD; - - em_config_collision_dist(hw); - - /* Set up speed in the Device Control register depending on - * negotiated values. - */ - if((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) - ctrl |= E1000_CTRL_SPD_1000; - else if((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS) - ctrl |= E1000_CTRL_SPD_100; - - /* Write the configured values back to the Device Control Reg. */ - E1000_WRITE_REG(hw, CTRL, ctrl); - return E1000_SUCCESS; -} - -/****************************************************************************** - * Forces the MAC's flow control settings. - * - * hw - Struct containing variables accessed by shared code - * - * Sets the TFCE and RFCE bits in the device control register to reflect - * the adapter settings. TFCE and RFCE need to be explicitly set by - * software when a Copper PHY is used because autonegotiation is managed - * by the PHY rather than the MAC. Software must also configure these - * bits when link is forced on a fiber connection. - *****************************************************************************/ -int32_t -em_force_mac_fc(struct em_hw *hw) -{ - uint32_t ctrl; - - DEBUGFUNC("em_force_mac_fc"); - - /* Get the current configuration of the Device Control Register */ - ctrl = E1000_READ_REG(hw, CTRL); - - /* Because we didn't get link via the internal auto-negotiation - * mechanism (we either forced link or we got link via PHY - * auto-neg), we have to manually enable/disable transmit an - * receive flow control. - * - * The "Case" statement below enables/disable flow control - * according to the "hw->fc" parameter. - * - * The possible values of the "fc" 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 - * frames but we do not receive pause frames). - * 3: Both Rx and TX flow control (symmetric) is enabled. - * other: No other values should be possible at this point. - */ - - switch (hw->fc) { - case em_fc_none: - ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE)); - break; - case em_fc_rx_pause: - ctrl &= (~E1000_CTRL_TFCE); - ctrl |= E1000_CTRL_RFCE; - break; - case em_fc_tx_pause: - ctrl &= (~E1000_CTRL_RFCE); - ctrl |= E1000_CTRL_TFCE; - break; - case em_fc_full: - ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE); - break; - default: - DEBUGOUT("Flow control param set incorrectly\n"); - return -E1000_ERR_CONFIG; - } - - /* Disable TX Flow Control for 82542 (rev 2.0) */ - if(hw->mac_type == em_82542_rev2_0) - ctrl &= (~E1000_CTRL_TFCE); - - E1000_WRITE_REG(hw, CTRL, ctrl); - return E1000_SUCCESS; -} - -/****************************************************************************** - * Configures flow control settings after link is established - * - * hw - Struct containing variables accessed by shared code - * - * Should be called immediately after a valid link has been established. - * Forces MAC flow control settings if link was forced. When in MII/GMII mode - * and autonegotiation is enabled, the MAC flow control settings will be set - * based on the flow control negotiated by the PHY. In TBI mode, the TFCE - * and RFCE bits will be automaticaly set to the negotiated flow control mode. - *****************************************************************************/ -int32_t -em_config_fc_after_link_up(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t mii_status_reg; - uint16_t mii_nway_adv_reg; - uint16_t mii_nway_lp_ability_reg; - uint16_t speed; - uint16_t duplex; - - DEBUGFUNC("em_config_fc_after_link_up"); - - /* Check for the case where we have fiber media and auto-neg failed - * so we had to force link. In this case, we need to force the - * configuration of the MAC to match the "fc" parameter. - */ - if(((hw->media_type == em_media_type_fiber) && (hw->autoneg_failed)) || - ((hw->media_type == em_media_type_internal_serdes) && (hw->autoneg_failed)) || - ((hw->media_type == em_media_type_copper) && (!hw->autoneg))) { - ret_val = em_force_mac_fc(hw); - if(ret_val) { - DEBUGOUT("Error forcing flow control settings\n"); - return ret_val; - } - } - - /* Check for the case where we have copper media and auto-neg is - * enabled. In this case, we need to check and see if Auto-Neg - * has completed, and if so, how the PHY and link partner has - * flow control configured. - */ - if((hw->media_type == em_media_type_copper) && hw->autoneg) { - /* Read the MII Status Register and check to see if AutoNeg - * has completed. We read this twice because this reg has - * some "sticky" (latched) bits. - */ - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - - if(mii_status_reg & MII_SR_AUTONEG_COMPLETE) { - /* The AutoNeg process has completed, so we now need to - * read both the Auto Negotiation Advertisement Register - * (Address 4) and the Auto_Negotiation Base Page Ability - * Register (Address 5) to determine how flow control was - * negotiated. - */ - ret_val = em_read_phy_reg(hw, PHY_AUTONEG_ADV, - &mii_nway_adv_reg); - if(ret_val) - return ret_val; - ret_val = em_read_phy_reg(hw, PHY_LP_ABILITY, - &mii_nway_lp_ability_reg); - if(ret_val) - return ret_val; - - /* Two bits in the Auto Negotiation Advertisement Register - * (Address 4) and two bits in the Auto Negotiation Base - * Page Ability Register (Address 5) determine flow control - * for both the PHY and the link partner. The following - * table, taken out of the IEEE 802.3ab/D6.0 dated March 25, - * 1999, describes these PAUSE resolution bits and how flow - * control is determined based upon these settings. - * NOTE: DC = Don't Care - * - * LOCAL DEVICE | LINK PARTNER - * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution - *-------|---------|-------|---------|-------------------- - * 0 | 0 | DC | DC | em_fc_none - * 0 | 1 | 0 | DC | em_fc_none - * 0 | 1 | 1 | 0 | em_fc_none - * 0 | 1 | 1 | 1 | em_fc_tx_pause - * 1 | 0 | 0 | DC | em_fc_none - * 1 | DC | 1 | DC | em_fc_full - * 1 | 1 | 0 | 0 | em_fc_none - * 1 | 1 | 0 | 1 | em_fc_rx_pause - * - */ - /* Are both PAUSE bits set to 1? If so, this implies - * Symmetric Flow Control is enabled at both ends. The - * ASM_DIR bits are irrelevant per the spec. - * - * For Symmetric Flow Control: - * - * LOCAL DEVICE | LINK PARTNER - * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result - *-------|---------|-------|---------|-------------------- - * 1 | DC | 1 | DC | em_fc_full - * - */ - if((mii_nway_adv_reg & NWAY_AR_PAUSE) && - (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) { - /* Now we need to check if the user selected RX ONLY - * of pause frames. In this case, we had to advertise - * FULL flow control because we could not advertise RX - * ONLY. Hence, we must now check to see if we need to - * turn OFF the TRANSMISSION of PAUSE frames. - */ - if(hw->original_fc == em_fc_full) { - hw->fc = em_fc_full; - DEBUGOUT("Flow Control = FULL.\r\n"); - } else { - hw->fc = em_fc_rx_pause; - DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n"); - } - } - /* For receiving PAUSE frames ONLY. - * - * LOCAL DEVICE | LINK PARTNER - * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result - *-------|---------|-------|---------|-------------------- - * 0 | 1 | 1 | 1 | em_fc_tx_pause - * - */ - else if(!(mii_nway_adv_reg & NWAY_AR_PAUSE) && - (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && - (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && - (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) { - hw->fc = em_fc_tx_pause; - DEBUGOUT("Flow Control = TX PAUSE frames only.\r\n"); - } - /* For transmitting PAUSE frames ONLY. - * - * LOCAL DEVICE | LINK PARTNER - * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result - *-------|---------|-------|---------|-------------------- - * 1 | 1 | 0 | 1 | em_fc_rx_pause - * - */ - else if((mii_nway_adv_reg & NWAY_AR_PAUSE) && - (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && - !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && - (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) { - hw->fc = em_fc_rx_pause; - DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n"); - } - /* Per the IEEE spec, at this point flow control should be - * disabled. However, we want to consider that we could - * be connected to a legacy switch that doesn't advertise - * desired flow control, but can be forced on the link - * partner. So if we advertised no flow control, that is - * what we will resolve to. If we advertised some kind of - * receive capability (Rx Pause Only or Full Flow Control) - * and the link partner advertised none, we will configure - * ourselves to enable Rx Flow Control only. We can do - * this safely for two reasons: If the link partner really - * didn't want flow control enabled, and we enable Rx, no - * harm done since we won't be receiving any PAUSE frames - * anyway. If the intent on the link partner was to have - * flow control enabled, then by us enabling RX only, we - * can at least receive pause frames and process them. - * This is a good idea because in most cases, since we are - * predominantly a server NIC, more times than not we will - * be asked to delay transmission of packets than asking - * our link partner to pause transmission of frames. - */ - else if((hw->original_fc == em_fc_none || - hw->original_fc == em_fc_tx_pause) || - hw->fc_strict_ieee) { - hw->fc = em_fc_none; - DEBUGOUT("Flow Control = NONE.\r\n"); - } else { - hw->fc = em_fc_rx_pause; - DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n"); - } - - /* Now we need to do one last check... If we auto- - * negotiated to HALF DUPLEX, flow control should not be - * enabled per IEEE 802.3 spec. - */ - ret_val = em_get_speed_and_duplex(hw, &speed, &duplex); - if(ret_val) { - DEBUGOUT("Error getting link speed and duplex\n"); - return ret_val; - } - - if(duplex == HALF_DUPLEX) - hw->fc = em_fc_none; - - /* Now we call a subroutine to actually force the MAC - * controller to use the correct flow control settings. - */ - ret_val = em_force_mac_fc(hw); - if(ret_val) { - DEBUGOUT("Error forcing flow control settings\n"); - return ret_val; - } - } else { - DEBUGOUT("Copper PHY and Auto Neg has not completed.\r\n"); - } - } - return E1000_SUCCESS; -} - -/****************************************************************************** - * Checks to see if the link status of the hardware has changed. - * - * hw - Struct containing variables accessed by shared code - * - * Called by any function that needs to check the link status of the adapter. - *****************************************************************************/ -int32_t -em_check_for_link(struct em_hw *hw) -{ - uint32_t rxcw = 0; - uint32_t ctrl; - uint32_t status; - uint32_t rctl; - uint32_t icr; - uint32_t signal = 0; - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_check_for_link"); - - ctrl = E1000_READ_REG(hw, CTRL); - status = E1000_READ_REG(hw, STATUS); - - /* On adapters with a MAC newer than 82544, SW Defineable pin 1 will be - * set when the optics detect a signal. On older adapters, it will be - * cleared when there is a signal. This applies to fiber media only. - */ - if((hw->media_type == em_media_type_fiber) || - (hw->media_type == em_media_type_internal_serdes)) { - rxcw = E1000_READ_REG(hw, RXCW); - - if(hw->media_type == em_media_type_fiber) { - signal = (hw->mac_type > em_82544) ? E1000_CTRL_SWDPIN1 : 0; - if(status & E1000_STATUS_LU) - hw->get_link_status = FALSE; - } - } - - /* If we have a copper PHY then we only want to go out to the PHY - * registers to see if Auto-Neg has completed and/or if our link - * status has changed. The get_link_status flag will be set if we - * receive a Link Status Change interrupt or we have Rx Sequence - * Errors. - */ - if((hw->media_type == em_media_type_copper) && hw->get_link_status) { - /* First we want to see if the MII Status Register reports - * link. If so, then we want to get the current speed/duplex - * of the PHY. - * Read the register twice since the link bit is sticky. - */ - ret_val = em_read_phy_reg(hw, PHY_STATUS, &phy_data); - if(ret_val) - return ret_val; - ret_val = em_read_phy_reg(hw, PHY_STATUS, &phy_data); - if(ret_val) - return ret_val; - - if(phy_data & MII_SR_LINK_STATUS) { - hw->get_link_status = FALSE; - /* Check if there was DownShift, must be checked immediately after - * link-up */ - em_check_downshift(hw); - - /* If we are on 82544 or 82543 silicon and speed/duplex - * are forced to 10H or 10F, then we will implement the polarity - * reversal workaround. We disable interrupts first, and upon - * returning, place the devices interrupt state to its previous - * value except for the link status change interrupt which will - * happen due to the execution of this workaround. - */ - - if((hw->mac_type == em_82544 || hw->mac_type == em_82543) && - (!hw->autoneg) && - (hw->forced_speed_duplex == em_10_full || - hw->forced_speed_duplex == em_10_half)) { - E1000_WRITE_REG(hw, IMC, 0xffffffff); - ret_val = em_polarity_reversal_workaround(hw); - icr = E1000_READ_REG(hw, ICR); - E1000_WRITE_REG(hw, ICS, (icr & ~E1000_ICS_LSC)); - E1000_WRITE_REG(hw, IMS, IMS_ENABLE_MASK); - } - - } else { - /* No link detected */ - em_config_dsp_after_link_change(hw, FALSE); - return 0; - } - - /* If we are forcing speed/duplex, then we simply return since - * we have already determined whether we have link or not. - */ - if(!hw->autoneg) return -E1000_ERR_CONFIG; - - /* optimize the dsp settings for the igp phy */ - em_config_dsp_after_link_change(hw, TRUE); - - /* We have a M88E1000 PHY and Auto-Neg is enabled. If we - * have Si on board that is 82544 or newer, Auto - * Speed Detection takes care of MAC speed/duplex - * configuration. So we only need to configure Collision - * Distance in the MAC. Otherwise, we need to force - * speed/duplex on the MAC to the current PHY speed/duplex - * settings. - */ - if(hw->mac_type >= em_82544) - em_config_collision_dist(hw); - else { - ret_val = em_config_mac_to_phy(hw); - if(ret_val) { - DEBUGOUT("Error configuring MAC to PHY settings\n"); - return ret_val; - } - } - - /* Configure Flow Control now that Auto-Neg has completed. First, we - * need to restore the desired flow control settings because we may - * have had to re-autoneg with a different link partner. - */ - ret_val = em_config_fc_after_link_up(hw); - if(ret_val) { - DEBUGOUT("Error configuring flow control\n"); - return ret_val; - } - - /* At this point we know that we are on copper and we have - * auto-negotiated link. These are conditions for checking the link - * partner capability register. We use the link speed to determine if - * TBI compatibility needs to be turned on or off. If the link is not - * at gigabit speed, then TBI compatibility is not needed. If we are - * at gigabit speed, we turn on TBI compatibility. - */ - if(hw->tbi_compatibility_en) { - uint16_t speed, duplex; - em_get_speed_and_duplex(hw, &speed, &duplex); - if(speed != SPEED_1000) { - /* If link speed is not set to gigabit speed, we do not need - * to enable TBI compatibility. - */ - if(hw->tbi_compatibility_on) { - /* If we previously were in the mode, turn it off. */ - rctl = E1000_READ_REG(hw, RCTL); - rctl &= ~E1000_RCTL_SBP; - E1000_WRITE_REG(hw, RCTL, rctl); - hw->tbi_compatibility_on = FALSE; - } - } else { - /* If TBI compatibility is was previously off, turn it on. For - * compatibility with a TBI link partner, we will store bad - * packets. Some frames have an additional byte on the end and - * will look like CRC errors to to the hardware. - */ - if(!hw->tbi_compatibility_on) { - hw->tbi_compatibility_on = TRUE; - rctl = E1000_READ_REG(hw, RCTL); - rctl |= E1000_RCTL_SBP; - E1000_WRITE_REG(hw, RCTL, rctl); - } - } - } - } - /* If we don't have link (auto-negotiation failed or link partner cannot - * auto-negotiate), the cable is plugged in (we have signal), and our - * link partner is not trying to auto-negotiate with us (we are receiving - * idles or data), we need to force link up. We also need to give - * auto-negotiation time to complete, in case the cable was just plugged - * in. The autoneg_failed flag does this. - */ - else if((((hw->media_type == em_media_type_fiber) && - ((ctrl & E1000_CTRL_SWDPIN1) == signal)) || - (hw->media_type == em_media_type_internal_serdes)) && - (!(status & E1000_STATUS_LU)) && - (!(rxcw & E1000_RXCW_C))) { - if(hw->autoneg_failed == 0) { - hw->autoneg_failed = 1; - return 0; - } - DEBUGOUT("NOT RXing /C/, disable AutoNeg and force link.\r\n"); - - /* Disable auto-negotiation in the TXCW register */ - E1000_WRITE_REG(hw, TXCW, (hw->txcw & ~E1000_TXCW_ANE)); - - /* Force link-up and also force full-duplex. */ - ctrl = E1000_READ_REG(hw, CTRL); - ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD); - E1000_WRITE_REG(hw, CTRL, ctrl); - - /* Configure Flow Control after forcing link up. */ - ret_val = em_config_fc_after_link_up(hw); - if(ret_val) { - DEBUGOUT("Error configuring flow control\n"); - return ret_val; - } - } - /* If we are forcing link and we are receiving /C/ ordered sets, re-enable - * auto-negotiation in the TXCW register and disable forced link in the - * Device Control register in an attempt to auto-negotiate with our link - * partner. - */ - else if(((hw->media_type == em_media_type_fiber) || - (hw->media_type == em_media_type_internal_serdes)) && - (ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) { - DEBUGOUT("RXing /C/, enable AutoNeg and stop forcing link.\r\n"); - E1000_WRITE_REG(hw, TXCW, hw->txcw); - E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU)); - - hw->serdes_link_down = FALSE; - } - /* If we force link for non-auto-negotiation switch, check link status - * based on MAC synchronization for internal serdes media type. - */ - else if((hw->media_type == em_media_type_internal_serdes) && - !(E1000_TXCW_ANE & E1000_READ_REG(hw, TXCW))) { - /* SYNCH bit and IV bit are sticky. */ - usec_delay(10); - if(E1000_RXCW_SYNCH & E1000_READ_REG(hw, RXCW)) { - if(!(rxcw & E1000_RXCW_IV)) { - hw->serdes_link_down = FALSE; - DEBUGOUT("SERDES: Link is up.\n"); - } - } else { - hw->serdes_link_down = TRUE; - DEBUGOUT("SERDES: Link is down.\n"); - } - } - if((hw->media_type == em_media_type_internal_serdes) && - (E1000_TXCW_ANE & E1000_READ_REG(hw, TXCW))) { - hw->serdes_link_down = !(E1000_STATUS_LU & E1000_READ_REG(hw, STATUS)); - } - return E1000_SUCCESS; -} - -/****************************************************************************** - * Detects the current speed and duplex settings of the hardware. - * - * hw - Struct containing variables accessed by shared code - * speed - Speed of the connection - * duplex - Duplex setting of the connection - *****************************************************************************/ -int32_t -em_get_speed_and_duplex(struct em_hw *hw, - uint16_t *speed, - uint16_t *duplex) -{ - uint32_t status; - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_get_speed_and_duplex"); - - if(hw->mac_type >= em_82543) { - status = E1000_READ_REG(hw, STATUS); - if(status & E1000_STATUS_SPEED_1000) { - *speed = SPEED_1000; - DEBUGOUT("1000 Mbs, "); - } else if(status & E1000_STATUS_SPEED_100) { - *speed = SPEED_100; - DEBUGOUT("100 Mbs, "); - } else { - *speed = SPEED_10; - DEBUGOUT("10 Mbs, "); - } - - if(status & E1000_STATUS_FD) { - *duplex = FULL_DUPLEX; - DEBUGOUT("Full Duplex\r\n"); - } else { - *duplex = HALF_DUPLEX; - DEBUGOUT(" Half Duplex\r\n"); - } - } else { - DEBUGOUT("1000 Mbs, Full Duplex\r\n"); - *speed = SPEED_1000; - *duplex = FULL_DUPLEX; - } - - /* IGP01 PHY may advertise full duplex operation after speed downgrade even - * if it is operating at half duplex. Here we set the duplex settings to - * match the duplex in the link partner's capabilities. - */ - if(hw->phy_type == em_phy_igp && hw->speed_downgraded) { - ret_val = em_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data); - if(ret_val) - return ret_val; - - if(!(phy_data & NWAY_ER_LP_NWAY_CAPS)) - *duplex = HALF_DUPLEX; - else { - ret_val = em_read_phy_reg(hw, PHY_LP_ABILITY, &phy_data); - if(ret_val) - return ret_val; - if((*speed == SPEED_100 && !(phy_data & NWAY_LPAR_100TX_FD_CAPS)) || - (*speed == SPEED_10 && !(phy_data & NWAY_LPAR_10T_FD_CAPS))) - *duplex = HALF_DUPLEX; - } - } - - return E1000_SUCCESS; -} - -/****************************************************************************** -* Blocks until autoneg completes or times out (~4.5 seconds) -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -int32_t -em_wait_autoneg(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t i; - uint16_t phy_data; - - DEBUGFUNC("em_wait_autoneg"); - DEBUGOUT("Waiting for Auto-Neg to complete.\n"); - - /* We will wait for autoneg to complete or 4.5 seconds to expire. */ - for(i = PHY_AUTO_NEG_TIME; i > 0; i--) { - /* Read the MII Status Register and wait for Auto-Neg - * Complete bit to be set. - */ - ret_val = em_read_phy_reg(hw, PHY_STATUS, &phy_data); - if(ret_val) - return ret_val; - ret_val = em_read_phy_reg(hw, PHY_STATUS, &phy_data); - if(ret_val) - return ret_val; - if(phy_data & MII_SR_AUTONEG_COMPLETE) { - return E1000_SUCCESS; - } - msec_delay(100); - } - return E1000_SUCCESS; -} - -/****************************************************************************** -* Raises the Management Data Clock -* -* hw - Struct containing variables accessed by shared code -* ctrl - Device control register's current value -******************************************************************************/ -static void -em_raise_mdi_clk(struct em_hw *hw, - uint32_t *ctrl) -{ - /* Raise the clock input to the Management Data Clock (by setting the MDC - * bit), and then delay 10 microseconds. - */ - E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC)); - E1000_WRITE_FLUSH(hw); - usec_delay(10); -} - -/****************************************************************************** -* Lowers the Management Data Clock -* -* hw - Struct containing variables accessed by shared code -* ctrl - Device control register's current value -******************************************************************************/ -static void -em_lower_mdi_clk(struct em_hw *hw, - uint32_t *ctrl) -{ - /* Lower the clock input to the Management Data Clock (by clearing the MDC - * bit), and then delay 10 microseconds. - */ - E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC)); - E1000_WRITE_FLUSH(hw); - usec_delay(10); -} - -/****************************************************************************** -* Shifts data bits out to the PHY -* -* hw - Struct containing variables accessed by shared code -* data - Data to send out to the PHY -* count - Number of bits to shift out -* -* Bits are shifted out in MSB to LSB order. -******************************************************************************/ -static void -em_shift_out_mdi_bits(struct em_hw *hw, - uint32_t data, - uint16_t count) -{ - uint32_t ctrl; - uint32_t mask; - - /* We need to shift "count" number of bits out to the PHY. So, the value - * in the "data" parameter will be shifted out to the PHY one bit at a - * time. In order to do this, "data" must be broken down into bits. - */ - mask = 0x01; - mask <<= (count - 1); - - ctrl = E1000_READ_REG(hw, CTRL); - - /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */ - ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR); - - while(mask) { - /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and - * then raising and lowering the Management Data Clock. A "0" is - * shifted out to the PHY by setting the MDIO bit to "0" and then - * raising and lowering the clock. - */ - if(data & mask) ctrl |= E1000_CTRL_MDIO; - else ctrl &= ~E1000_CTRL_MDIO; - - E1000_WRITE_REG(hw, CTRL, ctrl); - E1000_WRITE_FLUSH(hw); - - usec_delay(10); - - em_raise_mdi_clk(hw, &ctrl); - em_lower_mdi_clk(hw, &ctrl); - - mask = mask >> 1; - } -} - -/****************************************************************************** -* Shifts data bits in from the PHY -* -* hw - Struct containing variables accessed by shared code -* -* Bits are shifted in in MSB to LSB order. -******************************************************************************/ -static uint16_t -em_shift_in_mdi_bits(struct em_hw *hw) -{ - uint32_t ctrl; - uint16_t data = 0; - uint8_t i; - - /* In order to read a register from the PHY, we need to shift in a total - * of 18 bits from the PHY. The first two bit (turnaround) times are used - * to avoid contention on the MDIO pin when a read operation is performed. - * These two bits are ignored by us and thrown away. Bits are "shifted in" - * by raising the input to the Management Data Clock (setting the MDC bit), - * and then reading the value of the MDIO bit. - */ - ctrl = E1000_READ_REG(hw, CTRL); - - /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */ - ctrl &= ~E1000_CTRL_MDIO_DIR; - ctrl &= ~E1000_CTRL_MDIO; - - E1000_WRITE_REG(hw, CTRL, ctrl); - E1000_WRITE_FLUSH(hw); - - /* Raise and Lower the clock before reading in the data. This accounts for - * the turnaround bits. The first clock occurred when we clocked out the - * last bit of the Register Address. - */ - em_raise_mdi_clk(hw, &ctrl); - em_lower_mdi_clk(hw, &ctrl); - - for(data = 0, i = 0; i < 16; i++) { - data = data << 1; - em_raise_mdi_clk(hw, &ctrl); - ctrl = E1000_READ_REG(hw, CTRL); - /* Check to see if we shifted in a "1". */ - if(ctrl & E1000_CTRL_MDIO) data |= 1; - em_lower_mdi_clk(hw, &ctrl); - } - - em_raise_mdi_clk(hw, &ctrl); - em_lower_mdi_clk(hw, &ctrl); - - return data; -} - -/***************************************************************************** -* Reads the value from a PHY register, if the value is on a specific non zero -* page, sets the page first. -* hw - Struct containing variables accessed by shared code -* reg_addr - address of the PHY register to read -******************************************************************************/ -int32_t -em_read_phy_reg(struct em_hw *hw, - uint32_t reg_addr, - uint16_t *phy_data) -{ - uint32_t ret_val; - - DEBUGFUNC("em_read_phy_reg"); - - if((hw->phy_type == em_phy_igp || - hw->phy_type == em_phy_igp_2) && - (reg_addr > MAX_PHY_MULTI_PAGE_REG)) { - ret_val = em_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT, - (uint16_t)reg_addr); - if(ret_val) { - return ret_val; - } - } - - ret_val = em_read_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr, - phy_data); - - return ret_val; -} - -int32_t -em_read_phy_reg_ex(struct em_hw *hw, - uint32_t reg_addr, - uint16_t *phy_data) -{ - uint32_t i; - uint32_t mdic = 0; - const uint32_t phy_addr = 1; - - DEBUGFUNC("em_read_phy_reg_ex"); - - if(reg_addr > MAX_PHY_REG_ADDRESS) { - DEBUGOUT1("PHY Address %d is out of range\n", reg_addr); - return -E1000_ERR_PARAM; - } - - if(hw->mac_type > em_82543) { - /* Set up Op-code, Phy Address, and register address in the MDI - * Control register. The MAC will take care of interfacing with the - * PHY to retrieve the desired data. - */ - mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) | - (phy_addr << E1000_MDIC_PHY_SHIFT) | - (E1000_MDIC_OP_READ)); - - E1000_WRITE_REG(hw, MDIC, mdic); - - /* Poll the ready bit to see if the MDI read completed */ - for(i = 0; i < 64; i++) { - usec_delay(50); - mdic = E1000_READ_REG(hw, MDIC); - if(mdic & E1000_MDIC_READY) break; - } - if(!(mdic & E1000_MDIC_READY)) { - DEBUGOUT("MDI Read did not complete\n"); - return -E1000_ERR_PHY; - } - if(mdic & E1000_MDIC_ERROR) { - DEBUGOUT("MDI Error\n"); - return -E1000_ERR_PHY; - } - *phy_data = (uint16_t) mdic; - } else { - /* We must first send a preamble through the MDIO pin to signal the - * beginning of an MII instruction. This is done by sending 32 - * consecutive "1" bits. - */ - em_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); - - /* Now combine the next few fields that are required for a read - * operation. We use this method instead of calling the - * em_shift_out_mdi_bits routine five different times. The format of - * a MII read instruction consists of a shift out of 14 bits and is - * defined as follows: - * <Preamble><SOF><Op Code><Phy Addr><Reg Addr> - * followed by a shift in of 18 bits. This first two bits shifted in - * are TurnAround bits used to avoid contention on the MDIO pin when a - * READ operation is performed. These two bits are thrown away - * followed by a shift in of 16 bits which contains the desired data. - */ - mdic = ((reg_addr) | (phy_addr << 5) | - (PHY_OP_READ << 10) | (PHY_SOF << 12)); - - em_shift_out_mdi_bits(hw, mdic, 14); - - /* Now that we've shifted out the read command to the MII, we need to - * "shift in" the 16-bit value (18 total bits) of the requested PHY - * register address. - */ - *phy_data = em_shift_in_mdi_bits(hw); - } - return E1000_SUCCESS; -} - -/****************************************************************************** -* Writes a value to a PHY register -* -* hw - Struct containing variables accessed by shared code -* reg_addr - address of the PHY register to write -* data - data to write to the PHY -******************************************************************************/ -int32_t -em_write_phy_reg(struct em_hw *hw, - uint32_t reg_addr, - uint16_t phy_data) -{ - uint32_t ret_val; - - DEBUGFUNC("em_write_phy_reg"); - - if((hw->phy_type == em_phy_igp || - hw->phy_type == em_phy_igp_2) && - (reg_addr > MAX_PHY_MULTI_PAGE_REG)) { - ret_val = em_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT, - (uint16_t)reg_addr); - if(ret_val) { - return ret_val; - } - } - - ret_val = em_write_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr, - phy_data); - - return ret_val; -} - -int32_t -em_write_phy_reg_ex(struct em_hw *hw, - uint32_t reg_addr, - uint16_t phy_data) -{ - uint32_t i; - uint32_t mdic = 0; - const uint32_t phy_addr = 1; - - DEBUGFUNC("em_write_phy_reg_ex"); - - if(reg_addr > MAX_PHY_REG_ADDRESS) { - DEBUGOUT1("PHY Address %d is out of range\n", reg_addr); - return -E1000_ERR_PARAM; - } - - if(hw->mac_type > em_82543) { - /* Set up Op-code, Phy Address, register address, and data intended - * for the PHY register in the MDI Control register. The MAC will take - * care of interfacing with the PHY to send the desired data. - */ - mdic = (((uint32_t) phy_data) | - (reg_addr << E1000_MDIC_REG_SHIFT) | - (phy_addr << E1000_MDIC_PHY_SHIFT) | - (E1000_MDIC_OP_WRITE)); - - E1000_WRITE_REG(hw, MDIC, mdic); - - /* Poll the ready bit to see if the MDI read completed */ - for(i = 0; i < 640; i++) { - usec_delay(5); - mdic = E1000_READ_REG(hw, MDIC); - if(mdic & E1000_MDIC_READY) break; - } - if(!(mdic & E1000_MDIC_READY)) { - DEBUGOUT("MDI Write did not complete\n"); - return -E1000_ERR_PHY; - } - } else { - /* We'll need to use the SW defined pins to shift the write command - * out to the PHY. We first send a preamble to the PHY to signal the - * beginning of the MII instruction. This is done by sending 32 - * consecutive "1" bits. - */ - em_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); - - /* Now combine the remaining required fields that will indicate a - * write operation. We use this method instead of calling the - * em_shift_out_mdi_bits routine for each field in the command. The - * format of a MII write instruction is as follows: - * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>. - */ - mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) | - (PHY_OP_WRITE << 12) | (PHY_SOF << 14)); - mdic <<= 16; - mdic |= (uint32_t) phy_data; - - em_shift_out_mdi_bits(hw, mdic, 32); - } - - return E1000_SUCCESS; -} - - -/****************************************************************************** -* Returns the PHY to the power-on reset state -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -int32_t -em_phy_hw_reset(struct em_hw *hw) -{ - uint32_t ctrl, ctrl_ext; - uint32_t led_ctrl; - int32_t ret_val; - - DEBUGFUNC("em_phy_hw_reset"); - - /* In the case of the phy reset being blocked, it's not an error, we - * simply return success without performing the reset. */ - ret_val = em_check_phy_reset_block(hw); - if (ret_val) - return E1000_SUCCESS; - - DEBUGOUT("Resetting Phy...\n"); - - if(hw->mac_type > em_82543) { - /* Read the device control register and assert the E1000_CTRL_PHY_RST - * bit. Then, take it out of reset. - */ - ctrl = E1000_READ_REG(hw, CTRL); - E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST); - E1000_WRITE_FLUSH(hw); - msec_delay(10); - E1000_WRITE_REG(hw, CTRL, ctrl); - E1000_WRITE_FLUSH(hw); - } else { - /* Read the Extended Device Control Register, assert the PHY_RESET_DIR - * bit to put the PHY into reset. Then, take it out of reset. - */ - ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); - ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR; - ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA; - E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); - E1000_WRITE_FLUSH(hw); - msec_delay(10); - ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA; - E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); - E1000_WRITE_FLUSH(hw); - } - usec_delay(150); - - if((hw->mac_type == em_82541) || (hw->mac_type == em_82547)) { - /* Configure activity LED after PHY reset */ - led_ctrl = E1000_READ_REG(hw, LEDCTL); - led_ctrl &= IGP_ACTIVITY_LED_MASK; - led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); - E1000_WRITE_REG(hw, LEDCTL, led_ctrl); - } - - /* Wait for FW to finish PHY configuration. */ - ret_val = em_get_phy_cfg_done(hw); - - return ret_val; -} - -/****************************************************************************** -* Resets the PHY -* -* hw - Struct containing variables accessed by shared code -* -* Sets bit 15 of the MII Control regiser -******************************************************************************/ -int32_t -em_phy_reset(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_phy_reset"); - - /* In the case of the phy reset being blocked, it's not an error, we - * simply return success without performing the reset. */ - ret_val = em_check_phy_reset_block(hw); - if (ret_val) - return E1000_SUCCESS; - - switch (hw->mac_type) { - case em_82541_rev_2: - ret_val = em_phy_hw_reset(hw); - if(ret_val) - return ret_val; - break; - default: - ret_val = em_read_phy_reg(hw, PHY_CTRL, &phy_data); - if(ret_val) - return ret_val; - - phy_data |= MII_CR_RESET; - ret_val = em_write_phy_reg(hw, PHY_CTRL, phy_data); - if(ret_val) - return ret_val; - - usec_delay(1); - break; - } - - if(hw->phy_type == em_phy_igp || hw->phy_type == em_phy_igp_2) - em_phy_init_script(hw); - - return E1000_SUCCESS; -} - -/****************************************************************************** -* Probes the expected PHY address for known PHY IDs -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -int32_t -em_detect_gig_phy(struct em_hw *hw) -{ - int32_t phy_init_status, ret_val; - uint16_t phy_id_high, phy_id_low; - boolean_t match = FALSE; - - DEBUGFUNC("em_detect_gig_phy"); - - /* Read the PHY ID Registers to identify which PHY is onboard. */ - ret_val = em_read_phy_reg(hw, PHY_ID1, &phy_id_high); - if(ret_val) - return ret_val; - - hw->phy_id = (uint32_t) (phy_id_high << 16); - usec_delay(20); - ret_val = em_read_phy_reg(hw, PHY_ID2, &phy_id_low); - if(ret_val) - return ret_val; - - hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK); - hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK; - - switch(hw->mac_type) { - case em_82543: - if(hw->phy_id == M88E1000_E_PHY_ID) match = TRUE; - break; - case em_82544: - if(hw->phy_id == M88E1000_I_PHY_ID) match = TRUE; - break; - case em_82540: - case em_82545: - case em_82545_rev_3: - case em_82546: - case em_82546_rev_3: - if(hw->phy_id == M88E1011_I_PHY_ID) match = TRUE; - break; - case em_82541: - case em_82541_rev_2: - case em_82547: - case em_82547_rev_2: - if(hw->phy_id == IGP01E1000_I_PHY_ID) match = TRUE; - break; - case em_82573: - if(hw->phy_id == M88E1111_I_PHY_ID) match = TRUE; - break; - default: - DEBUGOUT1("Invalid MAC type %d\n", hw->mac_type); - return -E1000_ERR_CONFIG; - } - phy_init_status = em_set_phy_type(hw); - - if ((match) && (phy_init_status == E1000_SUCCESS)) { - DEBUGOUT1("PHY ID 0x%X detected\n", hw->phy_id); - return E1000_SUCCESS; - } - DEBUGOUT1("Invalid PHY ID 0x%X\n", hw->phy_id); - return -E1000_ERR_PHY; -} - -/****************************************************************************** -* Resets the PHY's DSP -* -* hw - Struct containing variables accessed by shared code -******************************************************************************/ -static int32_t -em_phy_reset_dsp(struct em_hw *hw) -{ - int32_t ret_val; - DEBUGFUNC("em_phy_reset_dsp"); - - do { - ret_val = em_write_phy_reg(hw, 29, 0x001d); - if(ret_val) break; - ret_val = em_write_phy_reg(hw, 30, 0x00c1); - if(ret_val) break; - ret_val = em_write_phy_reg(hw, 30, 0x0000); - if(ret_val) break; - ret_val = E1000_SUCCESS; - } while(0); - - return ret_val; -} - -/****************************************************************************** -* Get PHY information from various PHY registers for igp PHY only. -* -* hw - Struct containing variables accessed by shared code -* phy_info - PHY information structure -******************************************************************************/ -int32_t -em_phy_igp_get_info(struct em_hw *hw, - struct em_phy_info *phy_info) -{ - int32_t ret_val; - uint16_t phy_data, polarity, min_length, max_length, average; - - DEBUGFUNC("em_phy_igp_get_info"); - - /* The downshift status is checked only once, after link is established, - * and it stored in the hw->speed_downgraded parameter. */ - phy_info->downshift = (em_downshift)hw->speed_downgraded; - - /* IGP01E1000 does not need to support it. */ - phy_info->extended_10bt_distance = em_10bt_ext_dist_enable_normal; - - /* IGP01E1000 always correct polarity reversal */ - phy_info->polarity_correction = em_polarity_reversal_enabled; - - /* Check polarity status */ - ret_val = em_check_polarity(hw, &polarity); - if(ret_val) - return ret_val; - - phy_info->cable_polarity = polarity; - - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, &phy_data); - if(ret_val) - return ret_val; - - phy_info->mdix_mode = (phy_data & IGP01E1000_PSSR_MDIX) >> - IGP01E1000_PSSR_MDIX_SHIFT; - - if((phy_data & IGP01E1000_PSSR_SPEED_MASK) == - IGP01E1000_PSSR_SPEED_1000MBPS) { - /* Local/Remote Receiver Information are only valid at 1000 Mbps */ - ret_val = em_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data); - if(ret_val) - return ret_val; - - phy_info->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) >> - SR_1000T_LOCAL_RX_STATUS_SHIFT; - phy_info->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) >> - SR_1000T_REMOTE_RX_STATUS_SHIFT; - - /* Get cable length */ - ret_val = em_get_cable_length(hw, &min_length, &max_length); - if(ret_val) - return ret_val; - - /* Translate to old method */ - average = (max_length + min_length) / 2; - - if(average <= em_igp_cable_length_50) - phy_info->cable_length = em_cable_length_50; - else if(average <= em_igp_cable_length_80) - phy_info->cable_length = em_cable_length_50_80; - else if(average <= em_igp_cable_length_110) - phy_info->cable_length = em_cable_length_80_110; - else if(average <= em_igp_cable_length_140) - phy_info->cable_length = em_cable_length_110_140; - else - phy_info->cable_length = em_cable_length_140; - } - - return E1000_SUCCESS; -} - -/****************************************************************************** -* Get PHY information from various PHY registers fot m88 PHY only. -* -* hw - Struct containing variables accessed by shared code -* phy_info - PHY information structure -******************************************************************************/ -int32_t -em_phy_m88_get_info(struct em_hw *hw, - struct em_phy_info *phy_info) -{ - int32_t ret_val; - uint16_t phy_data, polarity; - - DEBUGFUNC("em_phy_m88_get_info"); - - /* The downshift status is checked only once, after link is established, - * and it stored in the hw->speed_downgraded parameter. */ - phy_info->downshift = (em_downshift)hw->speed_downgraded; - - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); - if(ret_val) - return ret_val; - - phy_info->extended_10bt_distance = - (phy_data & M88E1000_PSCR_10BT_EXT_DIST_ENABLE) >> - M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT; - phy_info->polarity_correction = - (phy_data & M88E1000_PSCR_POLARITY_REVERSAL) >> - M88E1000_PSCR_POLARITY_REVERSAL_SHIFT; - - /* Check polarity status */ - ret_val = em_check_polarity(hw, &polarity); - if(ret_val) - return ret_val; - phy_info->cable_polarity = polarity; - - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); - if(ret_val) - return ret_val; - - phy_info->mdix_mode = (phy_data & M88E1000_PSSR_MDIX) >> - M88E1000_PSSR_MDIX_SHIFT; - - if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) { - /* Cable Length Estimation and Local/Remote Receiver Information - * are only valid at 1000 Mbps. - */ - phy_info->cable_length = ((phy_data & M88E1000_PSSR_CABLE_LENGTH) >> - M88E1000_PSSR_CABLE_LENGTH_SHIFT); - - ret_val = em_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data); - if(ret_val) - return ret_val; - - phy_info->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) >> - SR_1000T_LOCAL_RX_STATUS_SHIFT; - - phy_info->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) >> - SR_1000T_REMOTE_RX_STATUS_SHIFT; - } - - return E1000_SUCCESS; -} - -/****************************************************************************** -* Get PHY information from various PHY registers -* -* hw - Struct containing variables accessed by shared code -* phy_info - PHY information structure -******************************************************************************/ -int32_t -em_phy_get_info(struct em_hw *hw, - struct em_phy_info *phy_info) -{ - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_phy_get_info"); - - phy_info->cable_length = em_cable_length_undefined; - phy_info->extended_10bt_distance = em_10bt_ext_dist_enable_undefined; - phy_info->cable_polarity = em_rev_polarity_undefined; - phy_info->downshift = em_downshift_undefined; - phy_info->polarity_correction = em_polarity_reversal_undefined; - phy_info->mdix_mode = em_auto_x_mode_undefined; - phy_info->local_rx = em_1000t_rx_status_undefined; - phy_info->remote_rx = em_1000t_rx_status_undefined; - - if(hw->media_type != em_media_type_copper) { - DEBUGOUT("PHY info is only valid for copper media\n"); - return -E1000_ERR_CONFIG; - } - - ret_val = em_read_phy_reg(hw, PHY_STATUS, &phy_data); - if(ret_val) - return ret_val; - - ret_val = em_read_phy_reg(hw, PHY_STATUS, &phy_data); - if(ret_val) - return ret_val; - - if((phy_data & MII_SR_LINK_STATUS) != MII_SR_LINK_STATUS) { - DEBUGOUT("PHY info is only valid if link is up\n"); - return -E1000_ERR_CONFIG; - } - - if(hw->phy_type == em_phy_igp || - hw->phy_type == em_phy_igp_2) - return em_phy_igp_get_info(hw, phy_info); - else - return em_phy_m88_get_info(hw, phy_info); -} - -int32_t -em_validate_mdi_setting(struct em_hw *hw) -{ - DEBUGFUNC("em_validate_mdi_settings"); - - if(!hw->autoneg && (hw->mdix == 0 || hw->mdix == 3)) { - DEBUGOUT("Invalid MDI setting detected\n"); - hw->mdix = 1; - return -E1000_ERR_CONFIG; - } - return E1000_SUCCESS; -} - - -/****************************************************************************** - * Sets up eeprom variables in the hw struct. Must be called after mac_type - * is configured. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_init_eeprom_params(struct em_hw *hw) -{ - struct em_eeprom_info *eeprom = &hw->eeprom; - uint32_t eecd = E1000_READ_REG(hw, EECD); - int32_t ret_val = E1000_SUCCESS; - uint16_t eeprom_size; - - DEBUGFUNC("em_init_eeprom_params"); - - switch (hw->mac_type) { - case em_82542_rev2_0: - case em_82542_rev2_1: - case em_82543: - case em_82544: - eeprom->type = em_eeprom_microwire; - eeprom->word_size = 64; - eeprom->opcode_bits = 3; - eeprom->address_bits = 6; - eeprom->delay_usec = 50; - eeprom->use_eerd = FALSE; - eeprom->use_eewr = FALSE; - break; - case em_82540: - case em_82545: - case em_82545_rev_3: - case em_82546: - case em_82546_rev_3: - eeprom->type = em_eeprom_microwire; - eeprom->opcode_bits = 3; - eeprom->delay_usec = 50; - if(eecd & E1000_EECD_SIZE) { - eeprom->word_size = 256; - eeprom->address_bits = 8; - } else { - eeprom->word_size = 64; - eeprom->address_bits = 6; - } - eeprom->use_eerd = FALSE; - eeprom->use_eewr = FALSE; - break; - case em_82541: - case em_82541_rev_2: - case em_82547: - case em_82547_rev_2: - if (eecd & E1000_EECD_TYPE) { - eeprom->type = em_eeprom_spi; - eeprom->opcode_bits = 8; - eeprom->delay_usec = 1; - if (eecd & E1000_EECD_ADDR_BITS) { - eeprom->page_size = 32; - eeprom->address_bits = 16; - } else { - eeprom->page_size = 8; - eeprom->address_bits = 8; - } - } else { - eeprom->type = em_eeprom_microwire; - eeprom->opcode_bits = 3; - eeprom->delay_usec = 50; - if (eecd & E1000_EECD_ADDR_BITS) { - eeprom->word_size = 256; - eeprom->address_bits = 8; - } else { - eeprom->word_size = 64; - eeprom->address_bits = 6; - } - } - eeprom->use_eerd = FALSE; - eeprom->use_eewr = FALSE; - break; - case em_82573: - eeprom->type = em_eeprom_spi; - eeprom->opcode_bits = 8; - eeprom->delay_usec = 1; - if (eecd & E1000_EECD_ADDR_BITS) { - eeprom->page_size = 32; - eeprom->address_bits = 16; - } else { - eeprom->page_size = 8; - eeprom->address_bits = 8; - } - eeprom->use_eerd = TRUE; - eeprom->use_eewr = TRUE; - if(em_is_onboard_nvm_eeprom(hw) == FALSE) { - eeprom->type = em_eeprom_flash; - eeprom->word_size = 2048; - - /* Ensure that the Autonomous FLASH update bit is cleared due to - * Flash update issue on parts which use a FLASH for NVM. */ - eecd &= ~E1000_EECD_AUPDEN; - E1000_WRITE_REG(hw, EECD, eecd); - } - break; - default: - break; - } - - if (eeprom->type == em_eeprom_spi) { - /* eeprom_size will be an enum [0..8] that maps to eeprom sizes 128B to - * 32KB (incremented by powers of 2). - */ - if(hw->mac_type <= em_82547_rev_2) { - /* Set to default value for initial eeprom read. */ - eeprom->word_size = 64; - ret_val = em_read_eeprom(hw, EEPROM_CFG, 1, &eeprom_size); - if(ret_val) - return ret_val; - eeprom_size = (eeprom_size & EEPROM_SIZE_MASK) >> EEPROM_SIZE_SHIFT; - /* 256B eeprom size was not supported in earlier hardware, so we - * bump eeprom_size up one to ensure that "1" (which maps to 256B) - * is never the result used in the shifting logic below. */ - if(eeprom_size) - eeprom_size++; - } else { - eeprom_size = (uint16_t)((eecd & E1000_EECD_SIZE_EX_MASK) >> - E1000_EECD_SIZE_EX_SHIFT); - } - - eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT); - } - return ret_val; -} - -/****************************************************************************** - * Raises the EEPROM's clock input. - * - * hw - Struct containing variables accessed by shared code - * eecd - EECD's current value - *****************************************************************************/ -static void -em_raise_ee_clk(struct em_hw *hw, - uint32_t *eecd) -{ - /* Raise the clock input to the EEPROM (by setting the SK bit), and then - * wait <delay> microseconds. - */ - *eecd = *eecd | E1000_EECD_SK; - E1000_WRITE_REG(hw, EECD, *eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(hw->eeprom.delay_usec); -} - -/****************************************************************************** - * Lowers the EEPROM's clock input. - * - * hw - Struct containing variables accessed by shared code - * eecd - EECD's current value - *****************************************************************************/ -static void -em_lower_ee_clk(struct em_hw *hw, - uint32_t *eecd) -{ - /* Lower the clock input to the EEPROM (by clearing the SK bit), and then - * wait 50 microseconds. - */ - *eecd = *eecd & ~E1000_EECD_SK; - E1000_WRITE_REG(hw, EECD, *eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(hw->eeprom.delay_usec); -} - -/****************************************************************************** - * Shift data bits out to the EEPROM. - * - * hw - Struct containing variables accessed by shared code - * data - data to send to the EEPROM - * count - number of bits to shift out - *****************************************************************************/ -static void -em_shift_out_ee_bits(struct em_hw *hw, - uint16_t data, - uint16_t count) -{ - struct em_eeprom_info *eeprom = &hw->eeprom; - uint32_t eecd; - uint32_t mask; - - /* We need to shift "count" bits out to the EEPROM. So, value in the - * "data" parameter will be shifted out to the EEPROM one bit at a time. - * In order to do this, "data" must be broken down into bits. - */ - mask = 0x01 << (count - 1); - eecd = E1000_READ_REG(hw, EECD); - if (eeprom->type == em_eeprom_microwire) { - eecd &= ~E1000_EECD_DO; - } else if (eeprom->type == em_eeprom_spi) { - eecd |= E1000_EECD_DO; - } - do { - /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1", - * and then raising and then lowering the clock (the SK bit controls - * the clock input to the EEPROM). A "0" is shifted out to the EEPROM - * by setting "DI" to "0" and then raising and then lowering the clock. - */ - eecd &= ~E1000_EECD_DI; - - if(data & mask) - eecd |= E1000_EECD_DI; - - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - - usec_delay(eeprom->delay_usec); - - em_raise_ee_clk(hw, &eecd); - em_lower_ee_clk(hw, &eecd); - - mask = mask >> 1; - - } while(mask); - - /* We leave the "DI" bit set to "0" when we leave this routine. */ - eecd &= ~E1000_EECD_DI; - E1000_WRITE_REG(hw, EECD, eecd); -} - -/****************************************************************************** - * Shift data bits in from the EEPROM - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -static uint16_t -em_shift_in_ee_bits(struct em_hw *hw, - uint16_t count) -{ - uint32_t eecd; - uint32_t i; - uint16_t data; - - /* In order to read a register from the EEPROM, we need to shift 'count' - * bits in from the EEPROM. Bits are "shifted in" by raising the clock - * input to the EEPROM (setting the SK bit), and then reading the value of - * the "DO" bit. During this "shifting in" process the "DI" bit should - * always be clear. - */ - - eecd = E1000_READ_REG(hw, EECD); - - eecd &= ~(E1000_EECD_DO | E1000_EECD_DI); - data = 0; - - for(i = 0; i < count; i++) { - data = data << 1; - em_raise_ee_clk(hw, &eecd); - - eecd = E1000_READ_REG(hw, EECD); - - eecd &= ~(E1000_EECD_DI); - if(eecd & E1000_EECD_DO) - data |= 1; - - em_lower_ee_clk(hw, &eecd); - } - - return data; -} - -/****************************************************************************** - * Prepares EEPROM for access - * - * hw - Struct containing variables accessed by shared code - * - * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This - * function should be called before issuing a command to the EEPROM. - *****************************************************************************/ -static int32_t -em_acquire_eeprom(struct em_hw *hw) -{ - struct em_eeprom_info *eeprom = &hw->eeprom; - uint32_t eecd, i=0; - - DEBUGFUNC("em_acquire_eeprom"); - - if(em_get_hw_eeprom_semaphore(hw)) - return -E1000_ERR_EEPROM; - - eecd = E1000_READ_REG(hw, EECD); - - if (hw->mac_type != em_82573) { - /* Request EEPROM Access */ - if(hw->mac_type > em_82544) { - eecd |= E1000_EECD_REQ; - E1000_WRITE_REG(hw, EECD, eecd); - eecd = E1000_READ_REG(hw, EECD); - while((!(eecd & E1000_EECD_GNT)) && - (i < E1000_EEPROM_GRANT_ATTEMPTS)) { - i++; - usec_delay(5); - eecd = E1000_READ_REG(hw, EECD); - } - if(!(eecd & E1000_EECD_GNT)) { - eecd &= ~E1000_EECD_REQ; - E1000_WRITE_REG(hw, EECD, eecd); - DEBUGOUT("Could not acquire EEPROM grant\n"); - return -E1000_ERR_EEPROM; - } - } - } - - /* Setup EEPROM for Read/Write */ - - if (eeprom->type == em_eeprom_microwire) { - /* Clear SK and DI */ - eecd &= ~(E1000_EECD_DI | E1000_EECD_SK); - E1000_WRITE_REG(hw, EECD, eecd); - - /* Set CS */ - eecd |= E1000_EECD_CS; - E1000_WRITE_REG(hw, EECD, eecd); - } else if (eeprom->type == em_eeprom_spi) { - /* Clear SK and CS */ - eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); - E1000_WRITE_REG(hw, EECD, eecd); - usec_delay(1); - } - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Returns EEPROM to a "standby" state - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -static void -em_standby_eeprom(struct em_hw *hw) -{ - struct em_eeprom_info *eeprom = &hw->eeprom; - uint32_t eecd; - - eecd = E1000_READ_REG(hw, EECD); - - if(eeprom->type == em_eeprom_microwire) { - eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(eeprom->delay_usec); - - /* Clock high */ - eecd |= E1000_EECD_SK; - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(eeprom->delay_usec); - - /* Select EEPROM */ - eecd |= E1000_EECD_CS; - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(eeprom->delay_usec); - - /* Clock low */ - eecd &= ~E1000_EECD_SK; - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(eeprom->delay_usec); - } else if(eeprom->type == em_eeprom_spi) { - /* Toggle CS to flush commands */ - eecd |= E1000_EECD_CS; - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(eeprom->delay_usec); - eecd &= ~E1000_EECD_CS; - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(eeprom->delay_usec); - } -} - -/****************************************************************************** - * Terminates a command by inverting the EEPROM's chip select pin - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -static void -em_release_eeprom(struct em_hw *hw) -{ - uint32_t eecd; - - DEBUGFUNC("em_release_eeprom"); - - eecd = E1000_READ_REG(hw, EECD); - - if (hw->eeprom.type == em_eeprom_spi) { - eecd |= E1000_EECD_CS; /* Pull CS high */ - eecd &= ~E1000_EECD_SK; /* Lower SCK */ - - E1000_WRITE_REG(hw, EECD, eecd); - - usec_delay(hw->eeprom.delay_usec); - } else if(hw->eeprom.type == em_eeprom_microwire) { - /* cleanup eeprom */ - - /* CS on Microwire is active-high */ - eecd &= ~(E1000_EECD_CS | E1000_EECD_DI); - - E1000_WRITE_REG(hw, EECD, eecd); - - /* Rising edge of clock */ - eecd |= E1000_EECD_SK; - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(hw->eeprom.delay_usec); - - /* Falling edge of clock */ - eecd &= ~E1000_EECD_SK; - E1000_WRITE_REG(hw, EECD, eecd); - E1000_WRITE_FLUSH(hw); - usec_delay(hw->eeprom.delay_usec); - } - - /* Stop requesting EEPROM access */ - if(hw->mac_type > em_82544) { - eecd &= ~E1000_EECD_REQ; - E1000_WRITE_REG(hw, EECD, eecd); - } - - em_put_hw_eeprom_semaphore(hw); -} - -/****************************************************************************** - * Reads a 16 bit word from the EEPROM. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_spi_eeprom_ready(struct em_hw *hw) -{ - uint16_t retry_count = 0; - uint8_t spi_stat_reg; - - DEBUGFUNC("em_spi_eeprom_ready"); - - /* Read "Status Register" repeatedly until the LSB is cleared. The - * EEPROM will signal that the command has been completed by clearing - * bit 0 of the internal status register. If it's not cleared within - * 5 milliseconds, then error out. - */ - retry_count = 0; - do { - em_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI, - hw->eeprom.opcode_bits); - spi_stat_reg = (uint8_t)em_shift_in_ee_bits(hw, 8); - if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI)) - break; - - usec_delay(5); - retry_count += 5; - - em_standby_eeprom(hw); - } while(retry_count < EEPROM_MAX_RETRY_SPI); - - /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and - * only 0-5mSec on 5V devices) - */ - if(retry_count >= EEPROM_MAX_RETRY_SPI) { - DEBUGOUT("SPI EEPROM Status error\n"); - return -E1000_ERR_EEPROM; - } - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Reads a 16 bit word from the EEPROM. - * - * hw - Struct containing variables accessed by shared code - * offset - offset of word in the EEPROM to read - * data - word read from the EEPROM - * words - number of words to read - *****************************************************************************/ -int32_t -em_read_eeprom(struct em_hw *hw, - uint16_t offset, - uint16_t words, - uint16_t *data) -{ - struct em_eeprom_info *eeprom = &hw->eeprom; - uint32_t i = 0; - int32_t ret_val; - - DEBUGFUNC("em_read_eeprom"); - - /* A check for invalid values: offset too large, too many words, and not - * enough words. - */ - if((offset >= eeprom->word_size) || (words > eeprom->word_size - offset) || - (words == 0)) { - DEBUGOUT("\"words\" parameter out of bounds\n"); - return -E1000_ERR_EEPROM; - } - - /* FLASH reads without acquiring the semaphore are safe in 82573-based - * controllers. - */ - if ((em_is_onboard_nvm_eeprom(hw) == TRUE) || - (hw->mac_type != em_82573)) { - /* Prepare the EEPROM for reading */ - if(em_acquire_eeprom(hw) != E1000_SUCCESS) - return -E1000_ERR_EEPROM; - } - - if(eeprom->use_eerd == TRUE) { - ret_val = em_read_eeprom_eerd(hw, offset, words, data); - if ((em_is_onboard_nvm_eeprom(hw) == TRUE) || - (hw->mac_type != em_82573)) - em_release_eeprom(hw); - return ret_val; - } - - if(eeprom->type == em_eeprom_spi) { - uint16_t word_in; - uint8_t read_opcode = EEPROM_READ_OPCODE_SPI; - - if(em_spi_eeprom_ready(hw)) { - em_release_eeprom(hw); - return -E1000_ERR_EEPROM; - } - - em_standby_eeprom(hw); - - /* Some SPI eeproms use the 8th address bit embedded in the opcode */ - if((eeprom->address_bits == 8) && (offset >= 128)) - read_opcode |= EEPROM_A8_OPCODE_SPI; - - /* Send the READ command (opcode + addr) */ - em_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits); - em_shift_out_ee_bits(hw, (uint16_t)(offset*2), eeprom->address_bits); - - /* Read the data. The address of the eeprom internally increments with - * each byte (spi) being read, saving on the overhead of eeprom setup - * and tear-down. The address counter will roll over if reading beyond - * the size of the eeprom, thus allowing the entire memory to be read - * starting from any offset. */ - for (i = 0; i < words; i++) { - word_in = em_shift_in_ee_bits(hw, 16); - data[i] = (word_in >> 8) | (word_in << 8); - } - } else if(eeprom->type == em_eeprom_microwire) { - for (i = 0; i < words; i++) { - /* Send the READ command (opcode + addr) */ - em_shift_out_ee_bits(hw, EEPROM_READ_OPCODE_MICROWIRE, - eeprom->opcode_bits); - em_shift_out_ee_bits(hw, (uint16_t)(offset + i), - eeprom->address_bits); - - /* Read the data. For microwire, each word requires the overhead - * of eeprom setup and tear-down. */ - data[i] = em_shift_in_ee_bits(hw, 16); - em_standby_eeprom(hw); - } - } - - /* End this read operation */ - em_release_eeprom(hw); - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Reads a 16 bit word from the EEPROM using the EERD register. - * - * hw - Struct containing variables accessed by shared code - * offset - offset of word in the EEPROM to read - * data - word read from the EEPROM - * words - number of words to read - *****************************************************************************/ -int32_t -em_read_eeprom_eerd(struct em_hw *hw, - uint16_t offset, - uint16_t words, - uint16_t *data) -{ - uint32_t i, eerd = 0; - int32_t error = 0; - - for (i = 0; i < words; i++) { - eerd = ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) + - E1000_EEPROM_RW_REG_START; - - E1000_WRITE_REG(hw, EERD, eerd); - error = em_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ); - - if(error) { - break; - } - data[i] = (E1000_READ_REG(hw, EERD) >> E1000_EEPROM_RW_REG_DATA); - - } - - return error; -} - -/****************************************************************************** - * Writes a 16 bit word from the EEPROM using the EEWR register. - * - * hw - Struct containing variables accessed by shared code - * offset - offset of word in the EEPROM to read - * data - word read from the EEPROM - * words - number of words to read - *****************************************************************************/ -int32_t -em_write_eeprom_eewr(struct em_hw *hw, - uint16_t offset, - uint16_t words, - uint16_t *data) -{ - uint32_t register_value = 0; - uint32_t i = 0; - int32_t error = 0; - - for (i = 0; i < words; i++) { - register_value = (data[i] << E1000_EEPROM_RW_REG_DATA) | - ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) | - E1000_EEPROM_RW_REG_START; - - error = em_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE); - if(error) { - break; - } - - E1000_WRITE_REG(hw, EEWR, register_value); - - error = em_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE); - - if(error) { - break; - } - } - - return error; -} - -/****************************************************************************** - * Polls the status bit (bit 1) of the EERD to determine when the read is done. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_poll_eerd_eewr_done(struct em_hw *hw, int eerd) -{ - uint32_t attempts = 100000; - uint32_t i, reg = 0; - int32_t done = E1000_ERR_EEPROM; - - for(i = 0; i < attempts; i++) { - if(eerd == E1000_EEPROM_POLL_READ) - reg = E1000_READ_REG(hw, EERD); - else - reg = E1000_READ_REG(hw, EEWR); - - if(reg & E1000_EEPROM_RW_REG_DONE) { - done = E1000_SUCCESS; - break; - } - usec_delay(5); - } - - return done; -} - -/*************************************************************************** -* Description: Determines if the onboard NVM is FLASH or EEPROM. -* -* hw - Struct containing variables accessed by shared code -****************************************************************************/ -boolean_t -em_is_onboard_nvm_eeprom(struct em_hw *hw) -{ - uint32_t eecd = 0; - - if(hw->mac_type == em_82573) { - eecd = E1000_READ_REG(hw, EECD); - - /* Isolate bits 15 & 16 */ - eecd = ((eecd >> 15) & 0x03); - - /* If both bits are set, device is Flash type */ - if(eecd == 0x03) { - return FALSE; - } - } - return TRUE; -} - -/****************************************************************************** - * Verifies that the EEPROM has a valid checksum - * - * hw - Struct containing variables accessed by shared code - * - * Reads the first 64 16 bit words of the EEPROM and sums the values read. - * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is - * valid. - *****************************************************************************/ -int32_t -em_validate_eeprom_checksum(struct em_hw *hw) -{ - uint16_t checksum = 0; - uint16_t i, eeprom_data; - - DEBUGFUNC("em_validate_eeprom_checksum"); - - if ((hw->mac_type == em_82573) && - (em_is_onboard_nvm_eeprom(hw) == FALSE)) { - /* Check bit 4 of word 10h. If it is 0, firmware is done updating - * 10h-12h. Checksum may need to be fixed. */ - em_read_eeprom(hw, 0x10, 1, &eeprom_data); - if ((eeprom_data & 0x10) == 0) { - /* Read 0x23 and check bit 15. This bit is a 1 when the checksum - * has already been fixed. If the checksum is still wrong and this - * bit is a 1, we need to return bad checksum. Otherwise, we need - * to set this bit to a 1 and update the checksum. */ - em_read_eeprom(hw, 0x23, 1, &eeprom_data); - if ((eeprom_data & 0x8000) == 0) { - eeprom_data |= 0x8000; - em_write_eeprom(hw, 0x23, 1, &eeprom_data); - em_update_eeprom_checksum(hw); - } - } - } - - for(i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) { - if(em_read_eeprom(hw, i, 1, &eeprom_data) < 0) { - DEBUGOUT("EEPROM Read Error\n"); - return -E1000_ERR_EEPROM; - } - checksum += eeprom_data; - } - - if(checksum == (uint16_t) EEPROM_SUM) - return E1000_SUCCESS; - else { - DEBUGOUT("EEPROM Checksum Invalid\n"); - return -E1000_ERR_EEPROM; - } -} - -/****************************************************************************** - * Calculates the EEPROM checksum and writes it to the EEPROM - * - * hw - Struct containing variables accessed by shared code - * - * Sums the first 63 16 bit words of the EEPROM. Subtracts the sum from 0xBABA. - * Writes the difference to word offset 63 of the EEPROM. - *****************************************************************************/ -int32_t -em_update_eeprom_checksum(struct em_hw *hw) -{ - uint16_t checksum = 0; - uint16_t i, eeprom_data; - - DEBUGFUNC("em_update_eeprom_checksum"); - - for(i = 0; i < EEPROM_CHECKSUM_REG; i++) { - if(em_read_eeprom(hw, i, 1, &eeprom_data) < 0) { - DEBUGOUT("EEPROM Read Error\n"); - return -E1000_ERR_EEPROM; - } - checksum += eeprom_data; - } - checksum = (uint16_t) EEPROM_SUM - checksum; - if(em_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) { - DEBUGOUT("EEPROM Write Error\n"); - return -E1000_ERR_EEPROM; - } else if (hw->eeprom.type == em_eeprom_flash) { - em_commit_shadow_ram(hw); - } - return E1000_SUCCESS; -} - -/****************************************************************************** - * Parent function for writing words to the different EEPROM types. - * - * hw - Struct containing variables accessed by shared code - * offset - offset within the EEPROM to be written to - * words - number of words to write - * data - 16 bit word to be written to the EEPROM - * - * If em_update_eeprom_checksum is not called after this function, the - * EEPROM will most likely contain an invalid checksum. - *****************************************************************************/ -int32_t -em_write_eeprom(struct em_hw *hw, - uint16_t offset, - uint16_t words, - uint16_t *data) -{ - struct em_eeprom_info *eeprom = &hw->eeprom; - int32_t status = 0; - - DEBUGFUNC("em_write_eeprom"); - - /* A check for invalid values: offset too large, too many words, and not - * enough words. - */ - if((offset >= eeprom->word_size) || (words > eeprom->word_size - offset) || - (words == 0)) { - DEBUGOUT("\"words\" parameter out of bounds\n"); - return -E1000_ERR_EEPROM; - } - - /* 82573 reads only through eerd */ - if(eeprom->use_eewr == TRUE) - return em_write_eeprom_eewr(hw, offset, words, data); - - /* Prepare the EEPROM for writing */ - if (em_acquire_eeprom(hw) != E1000_SUCCESS) - return -E1000_ERR_EEPROM; - - if(eeprom->type == em_eeprom_microwire) { - status = em_write_eeprom_microwire(hw, offset, words, data); - } else { - status = em_write_eeprom_spi(hw, offset, words, data); - msec_delay(10); - } - - /* Done with writing */ - em_release_eeprom(hw); - - return status; -} - -/****************************************************************************** - * Writes a 16 bit word to a given offset in an SPI EEPROM. - * - * hw - Struct containing variables accessed by shared code - * offset - offset within the EEPROM to be written to - * words - number of words to write - * data - pointer to array of 8 bit words to be written to the EEPROM - * - *****************************************************************************/ -int32_t -em_write_eeprom_spi(struct em_hw *hw, - uint16_t offset, - uint16_t words, - uint16_t *data) -{ - struct em_eeprom_info *eeprom = &hw->eeprom; - uint16_t widx = 0; - - DEBUGFUNC("em_write_eeprom_spi"); - - while (widx < words) { - uint8_t write_opcode = EEPROM_WRITE_OPCODE_SPI; - - if(em_spi_eeprom_ready(hw)) return -E1000_ERR_EEPROM; - - em_standby_eeprom(hw); - - /* Send the WRITE ENABLE command (8 bit opcode ) */ - em_shift_out_ee_bits(hw, EEPROM_WREN_OPCODE_SPI, - eeprom->opcode_bits); - - em_standby_eeprom(hw); - - /* Some SPI eeproms use the 8th address bit embedded in the opcode */ - if((eeprom->address_bits == 8) && (offset >= 128)) - write_opcode |= EEPROM_A8_OPCODE_SPI; - - /* Send the Write command (8-bit opcode + addr) */ - em_shift_out_ee_bits(hw, write_opcode, eeprom->opcode_bits); - - em_shift_out_ee_bits(hw, (uint16_t)((offset + widx)*2), - eeprom->address_bits); - - /* Send the data */ - - /* Loop to allow for up to whole page write (32 bytes) of eeprom */ - while (widx < words) { - uint16_t word_out = data[widx]; - word_out = (word_out >> 8) | (word_out << 8); - em_shift_out_ee_bits(hw, word_out, 16); - widx++; - - /* Some larger eeprom sizes are capable of a 32-byte PAGE WRITE - * operation, while the smaller eeproms are capable of an 8-byte - * PAGE WRITE operation. Break the inner loop to pass new address - */ - if((((offset + widx)*2) % eeprom->page_size) == 0) { - em_standby_eeprom(hw); - break; - } - } - } - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Writes a 16 bit word to a given offset in a Microwire EEPROM. - * - * hw - Struct containing variables accessed by shared code - * offset - offset within the EEPROM to be written to - * words - number of words to write - * data - pointer to array of 16 bit words to be written to the EEPROM - * - *****************************************************************************/ -int32_t -em_write_eeprom_microwire(struct em_hw *hw, - uint16_t offset, - uint16_t words, - uint16_t *data) -{ - struct em_eeprom_info *eeprom = &hw->eeprom; - uint32_t eecd; - uint16_t words_written = 0; - uint16_t i = 0; - - DEBUGFUNC("em_write_eeprom_microwire"); - - /* Send the write enable command to the EEPROM (3-bit opcode plus - * 6/8-bit dummy address beginning with 11). It's less work to include - * the 11 of the dummy address as part of the opcode than it is to shift - * it over the correct number of bits for the address. This puts the - * EEPROM into write/erase mode. - */ - em_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE_MICROWIRE, - (uint16_t)(eeprom->opcode_bits + 2)); - - em_shift_out_ee_bits(hw, 0, (uint16_t)(eeprom->address_bits - 2)); - - /* Prepare the EEPROM */ - em_standby_eeprom(hw); - - while (words_written < words) { - /* Send the Write command (3-bit opcode + addr) */ - em_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE_MICROWIRE, - eeprom->opcode_bits); - - em_shift_out_ee_bits(hw, (uint16_t)(offset + words_written), - eeprom->address_bits); - - /* Send the data */ - em_shift_out_ee_bits(hw, data[words_written], 16); - - /* Toggle the CS line. This in effect tells the EEPROM to execute - * the previous command. - */ - em_standby_eeprom(hw); - - /* Read DO repeatedly until it is high (equal to '1'). The EEPROM will - * signal that the command has been completed by raising the DO signal. - * If DO does not go high in 10 milliseconds, then error out. - */ - for(i = 0; i < 200; i++) { - eecd = E1000_READ_REG(hw, EECD); - if(eecd & E1000_EECD_DO) break; - usec_delay(50); - } - if(i == 200) { - DEBUGOUT("EEPROM Write did not complete\n"); - return -E1000_ERR_EEPROM; - } - - /* Recover from write */ - em_standby_eeprom(hw); - - words_written++; - } - - /* Send the write disable command to the EEPROM (3-bit opcode plus - * 6/8-bit dummy address beginning with 10). It's less work to include - * the 10 of the dummy address as part of the opcode than it is to shift - * it over the correct number of bits for the address. This takes the - * EEPROM out of write/erase mode. - */ - em_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE_MICROWIRE, - (uint16_t)(eeprom->opcode_bits + 2)); - - em_shift_out_ee_bits(hw, 0, (uint16_t)(eeprom->address_bits - 2)); - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Flushes the cached eeprom to NVM. This is done by saving the modified values - * in the eeprom cache and the non modified values in the currently active bank - * to the new bank. - * - * hw - Struct containing variables accessed by shared code - * offset - offset of word in the EEPROM to read - * data - word read from the EEPROM - * words - number of words to read - *****************************************************************************/ -int32_t -em_commit_shadow_ram(struct em_hw *hw) -{ - uint32_t attempts = 100000; - uint32_t eecd = 0; - uint32_t flop = 0; - uint32_t i = 0; - int32_t error = E1000_SUCCESS; - - /* The flop register will be used to determine if flash type is STM */ - flop = E1000_READ_REG(hw, FLOP); - - if (hw->mac_type == em_82573) { - for (i=0; i < attempts; i++) { - eecd = E1000_READ_REG(hw, EECD); - if ((eecd & E1000_EECD_FLUPD) == 0) { - break; - } - usec_delay(5); - } - - if (i == attempts) { - return -E1000_ERR_EEPROM; - } - - /* If STM opcode located in bits 15:8 of flop, reset firmware */ - if ((flop & 0xFF00) == E1000_STM_OPCODE) { - E1000_WRITE_REG(hw, HICR, E1000_HICR_FW_RESET); - } - - /* Perform the flash update */ - E1000_WRITE_REG(hw, EECD, eecd | E1000_EECD_FLUPD); - - for (i=0; i < attempts; i++) { - eecd = E1000_READ_REG(hw, EECD); - if ((eecd & E1000_EECD_FLUPD) == 0) { - break; - } - usec_delay(5); - } - - if (i == attempts) { - return -E1000_ERR_EEPROM; - } - } - - return error; -} - -/****************************************************************************** - * Reads the adapter's part number from the EEPROM - * - * hw - Struct containing variables accessed by shared code - * part_num - Adapter's part number - *****************************************************************************/ -int32_t -em_read_part_num(struct em_hw *hw, - uint32_t *part_num) -{ - uint16_t offset = EEPROM_PBA_BYTE_1; - uint16_t eeprom_data; - - DEBUGFUNC("em_read_part_num"); - - /* Get word 0 from EEPROM */ - if(em_read_eeprom(hw, offset, 1, &eeprom_data) < 0) { - DEBUGOUT("EEPROM Read Error\n"); - return -E1000_ERR_EEPROM; - } - /* Save word 0 in upper half of part_num */ - *part_num = (uint32_t) (eeprom_data << 16); - - /* Get word 1 from EEPROM */ - if(em_read_eeprom(hw, ++offset, 1, &eeprom_data) < 0) { - DEBUGOUT("EEPROM Read Error\n"); - return -E1000_ERR_EEPROM; - } - /* Save word 1 in lower half of part_num */ - *part_num |= eeprom_data; - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the - * second function of dual function devices - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_read_mac_addr(struct em_hw * hw) -{ - uint16_t offset; - uint16_t eeprom_data, i; - - DEBUGFUNC("em_read_mac_addr"); - - for(i = 0; i < NODE_ADDRESS_SIZE; i += 2) { - offset = i >> 1; - if(em_read_eeprom(hw, offset, 1, &eeprom_data) < 0) { - DEBUGOUT("EEPROM Read Error\n"); - return -E1000_ERR_EEPROM; - } - hw->perm_mac_addr[i] = (uint8_t) (eeprom_data & 0x00FF); - hw->perm_mac_addr[i+1] = (uint8_t) (eeprom_data >> 8); - } - if(((hw->mac_type == em_82546) || (hw->mac_type == em_82546_rev_3)) && - (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)) - hw->perm_mac_addr[5] ^= 0x01; - - for(i = 0; i < NODE_ADDRESS_SIZE; i++) - hw->mac_addr[i] = hw->perm_mac_addr[i]; - return E1000_SUCCESS; -} - -/****************************************************************************** - * 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 addresss registers. Clears the multicast table. Assumes - * the receiver is in reset when the routine is called. - *****************************************************************************/ -void -em_init_rx_addrs(struct em_hw *hw) -{ - uint32_t i; - uint32_t rar_num; - - DEBUGFUNC("em_init_rx_addrs"); - - /* Setup the receive address. */ - DEBUGOUT("Programming MAC Address into RAR[0]\n"); - - em_rar_set(hw, hw->mac_addr, 0); - - rar_num = E1000_RAR_ENTRIES; - /* Zero out the other 15 receive addresses. */ - DEBUGOUT("Clearing RAR[1-15]\n"); - for(i = 1; i < rar_num; i++) { - E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0); - E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 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 - * rar_used_count - offset where to start adding mc addresses into the RAR's - * - * 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 -em_mc_addr_list_update(struct em_hw *hw, - uint8_t *mc_addr_list, - uint32_t mc_addr_count, - uint32_t pad, - uint32_t rar_used_count) -{ - uint32_t hash_value; - uint32_t i; - uint32_t num_rar_entry; - uint32_t num_mta_entry; - - DEBUGFUNC("em_mc_addr_list_update"); - - /* 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] */ - DEBUGOUT(" Clearing RAR[1-15]\n"); - num_rar_entry = E1000_RAR_ENTRIES; - for(i = rar_used_count; i < num_rar_entry; i++) { - E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0); - E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0); - } - - /* Clear the MTA */ - DEBUGOUT(" Clearing MTA\n"); - num_mta_entry = E1000_NUM_MTA_REGISTERS; - for(i = 0; i < num_mta_entry; i++) { - E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); - } - - /* Add the new addresses */ - for(i = 0; i < mc_addr_count; i++) { - DEBUGOUT(" Adding the multicast addresses:\n"); - DEBUGOUT7(" MC Addr #%d =%.2X %.2X %.2X %.2X %.2X %.2X\n", i, - mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad)], - mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 1], - mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 2], - mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 3], - mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 4], - mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 5]); - - hash_value = em_hash_mc_addr(hw, - mc_addr_list + - (i * (ETH_LENGTH_OF_ADDRESS + pad))); - - DEBUGOUT1(" Hash value = 0x%03X\n", hash_value); - - /* Place this multicast address in the RAR if there is room, * - * else put it in the MTA - */ - if (rar_used_count < num_rar_entry) { - em_rar_set(hw, - mc_addr_list + (i * (ETH_LENGTH_OF_ADDRESS + pad)), - rar_used_count); - rar_used_count++; - } else { - em_mta_set(hw, hash_value); - } - } - DEBUGOUT("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 - *****************************************************************************/ -uint32_t -em_hash_mc_addr(struct em_hw *hw, - uint8_t *mc_addr) -{ - uint32_t hash_value = 0; - - /* 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 - */ - case 0: - /* [47:36] i.e. 0x563 for above example address */ - hash_value = ((mc_addr[4] >> 4) | (((uint16_t) mc_addr[5]) << 4)); - break; - case 1: - /* [46:35] i.e. 0xAC6 for above example address */ - hash_value = ((mc_addr[4] >> 3) | (((uint16_t) mc_addr[5]) << 5)); - break; - case 2: - /* [45:34] i.e. 0x5D8 for above example address */ - hash_value = ((mc_addr[4] >> 2) | (((uint16_t) mc_addr[5]) << 6)); - break; - case 3: - /* [43:32] i.e. 0x634 for above example address */ - hash_value = ((mc_addr[4]) | (((uint16_t) mc_addr[5]) << 8)); - 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 - *****************************************************************************/ -void -em_mta_set(struct em_hw *hw, - uint32_t hash_value) -{ - uint32_t hash_bit, hash_reg; - uint32_t mta; - uint32_t temp; - - /* 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 = E1000_READ_REG_ARRAY(hw, MTA, hash_reg); - - mta |= (1 << hash_bit); - - /* If we are on an 82544 and we are trying to write an odd offset - * in the MTA, save off the previous entry before writing and - * restore the old value after writing. - */ - if((hw->mac_type == em_82544) && ((hash_reg & 0x1) == 1)) { - temp = E1000_READ_REG_ARRAY(hw, MTA, (hash_reg - 1)); - E1000_WRITE_REG_ARRAY(hw, MTA, hash_reg, mta); - E1000_WRITE_REG_ARRAY(hw, MTA, (hash_reg - 1), temp); - } else { - E1000_WRITE_REG_ARRAY(hw, MTA, hash_reg, mta); - } -} - -/****************************************************************************** - * 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 -em_rar_set(struct em_hw *hw, - uint8_t *addr, - uint32_t index) -{ - uint32_t 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 = ((uint32_t) addr[0] | - ((uint32_t) addr[1] << 8) | - ((uint32_t) addr[2] << 16) | ((uint32_t) addr[3] << 24)); - - rar_high = ((uint32_t) addr[4] | ((uint32_t) addr[5] << 8) | E1000_RAH_AV); - - E1000_WRITE_REG_ARRAY(hw, RA, (index << 1), rar_low); - E1000_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 -em_write_vfta(struct em_hw *hw, - uint32_t offset, - uint32_t value) -{ - uint32_t temp; - - if((hw->mac_type == em_82544) && ((offset & 0x1) == 1)) { - temp = E1000_READ_REG_ARRAY(hw, VFTA, (offset - 1)); - E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value); - E1000_WRITE_REG_ARRAY(hw, VFTA, (offset - 1), temp); - } else { - E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value); - } -} - -/****************************************************************************** - * Clears the VLAN filer table - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -void -em_clear_vfta(struct em_hw *hw) -{ - uint32_t offset; - uint32_t vfta_value = 0; - uint32_t vfta_offset = 0; - uint32_t vfta_bit_in_reg = 0; - - if (hw->mac_type == em_82573) { - if (hw->mng_cookie.vlan_id != 0) { - /* The VFTA is a 4096b bit-field, each identifying a single VLAN - * ID. The following operations determine which 32b entry - * (i.e. offset) into the array we want to set the VLAN ID - * (i.e. bit) of the manageability unit. */ - vfta_offset = (hw->mng_cookie.vlan_id >> - E1000_VFTA_ENTRY_SHIFT) & - E1000_VFTA_ENTRY_MASK; - vfta_bit_in_reg = 1 << (hw->mng_cookie.vlan_id & - E1000_VFTA_ENTRY_BIT_SHIFT_MASK); - } - } - for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) { - /* If the offset we want to clear is the same offset of the - * manageability VLAN ID, then clear all bits except that of the - * manageability unit */ - vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0; - E1000_WRITE_REG_ARRAY(hw, VFTA, offset, vfta_value); - } -} - -int32_t -em_id_led_init(struct em_hw * hw) -{ - uint32_t ledctl; - const uint32_t ledctl_mask = 0x000000FF; - const uint32_t ledctl_on = E1000_LEDCTL_MODE_LED_ON; - const uint32_t ledctl_off = E1000_LEDCTL_MODE_LED_OFF; - uint16_t eeprom_data, i, temp; - const uint16_t led_mask = 0x0F; - - DEBUGFUNC("em_id_led_init"); - - if(hw->mac_type < em_82540) { - /* Nothing to do */ - return E1000_SUCCESS; - } - - ledctl = E1000_READ_REG(hw, LEDCTL); - hw->ledctl_default = ledctl; - hw->ledctl_mode1 = hw->ledctl_default; - hw->ledctl_mode2 = hw->ledctl_default; - - if(em_read_eeprom(hw, EEPROM_ID_LED_SETTINGS, 1, &eeprom_data) < 0) { - DEBUGOUT("EEPROM Read Error\n"); - return -E1000_ERR_EEPROM; - } - if((eeprom_data== ID_LED_RESERVED_0000) || - (eeprom_data == ID_LED_RESERVED_FFFF)) eeprom_data = ID_LED_DEFAULT; - for(i = 0; i < 4; i++) { - temp = (eeprom_data >> (i << 2)) & led_mask; - switch(temp) { - case ID_LED_ON1_DEF2: - case ID_LED_ON1_ON2: - case ID_LED_ON1_OFF2: - hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3)); - hw->ledctl_mode1 |= ledctl_on << (i << 3); - break; - case ID_LED_OFF1_DEF2: - case ID_LED_OFF1_ON2: - case ID_LED_OFF1_OFF2: - hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3)); - hw->ledctl_mode1 |= ledctl_off << (i << 3); - break; - default: - /* Do nothing */ - break; - } - switch(temp) { - case ID_LED_DEF1_ON2: - case ID_LED_ON1_ON2: - case ID_LED_OFF1_ON2: - hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3)); - hw->ledctl_mode2 |= ledctl_on << (i << 3); - break; - case ID_LED_DEF1_OFF2: - case ID_LED_ON1_OFF2: - case ID_LED_OFF1_OFF2: - hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3)); - hw->ledctl_mode2 |= ledctl_off << (i << 3); - break; - default: - /* Do nothing */ - break; - } - } - return E1000_SUCCESS; -} - -/****************************************************************************** - * Prepares SW controlable LED for use and saves the current state of the LED. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_setup_led(struct em_hw *hw) -{ - uint32_t ledctl; - int32_t ret_val = E1000_SUCCESS; - - DEBUGFUNC("em_setup_led"); - - switch(hw->mac_type) { - case em_82542_rev2_0: - case em_82542_rev2_1: - case em_82543: - case em_82544: - /* No setup necessary */ - break; - case em_82541: - case em_82547: - case em_82541_rev_2: - case em_82547_rev_2: - /* Turn off PHY Smart Power Down (if enabled) */ - ret_val = em_read_phy_reg(hw, IGP01E1000_GMII_FIFO, - &hw->phy_spd_default); - if(ret_val) - return ret_val; - ret_val = em_write_phy_reg(hw, IGP01E1000_GMII_FIFO, - (uint16_t)(hw->phy_spd_default & - ~IGP01E1000_GMII_SPD)); - if(ret_val) - return ret_val; - /* Fall Through */ - default: - if(hw->media_type == em_media_type_fiber) { - ledctl = E1000_READ_REG(hw, LEDCTL); - /* Save current LEDCTL settings */ - hw->ledctl_default = ledctl; - /* Turn off LED0 */ - ledctl &= ~(E1000_LEDCTL_LED0_IVRT | - E1000_LEDCTL_LED0_BLINK | - E1000_LEDCTL_LED0_MODE_MASK); - ledctl |= (E1000_LEDCTL_MODE_LED_OFF << - E1000_LEDCTL_LED0_MODE_SHIFT); - E1000_WRITE_REG(hw, LEDCTL, ledctl); - } else if(hw->media_type == em_media_type_copper) - E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode1); - break; - } - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Restores the saved state of the SW controlable LED. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_cleanup_led(struct em_hw *hw) -{ - int32_t ret_val = E1000_SUCCESS; - - DEBUGFUNC("em_cleanup_led"); - - switch(hw->mac_type) { - case em_82542_rev2_0: - case em_82542_rev2_1: - case em_82543: - case em_82544: - /* No cleanup necessary */ - break; - case em_82541: - case em_82547: - case em_82541_rev_2: - case em_82547_rev_2: - /* Turn on PHY Smart Power Down (if previously enabled) */ - ret_val = em_write_phy_reg(hw, IGP01E1000_GMII_FIFO, - hw->phy_spd_default); - if(ret_val) - return ret_val; - /* Fall Through */ - default: - /* Restore LEDCTL settings */ - E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_default); - break; - } - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Turns on the software controllable LED - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_led_on(struct em_hw *hw) -{ - uint32_t ctrl = E1000_READ_REG(hw, CTRL); - - DEBUGFUNC("em_led_on"); - - switch(hw->mac_type) { - case em_82542_rev2_0: - case em_82542_rev2_1: - case em_82543: - /* Set SW Defineable Pin 0 to turn on the LED */ - ctrl |= E1000_CTRL_SWDPIN0; - ctrl |= E1000_CTRL_SWDPIO0; - break; - case em_82544: - if(hw->media_type == em_media_type_fiber) { - /* Set SW Defineable Pin 0 to turn on the LED */ - ctrl |= E1000_CTRL_SWDPIN0; - ctrl |= E1000_CTRL_SWDPIO0; - } else { - /* Clear SW Defineable Pin 0 to turn on the LED */ - ctrl &= ~E1000_CTRL_SWDPIN0; - ctrl |= E1000_CTRL_SWDPIO0; - } - break; - default: - if(hw->media_type == em_media_type_fiber) { - /* Clear SW Defineable Pin 0 to turn on the LED */ - ctrl &= ~E1000_CTRL_SWDPIN0; - ctrl |= E1000_CTRL_SWDPIO0; - } else if(hw->media_type == em_media_type_copper) { - E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode2); - return E1000_SUCCESS; - } - break; - } - - E1000_WRITE_REG(hw, CTRL, ctrl); - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Turns off the software controllable LED - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -int32_t -em_led_off(struct em_hw *hw) -{ - uint32_t ctrl = E1000_READ_REG(hw, CTRL); - - DEBUGFUNC("em_led_off"); - - switch(hw->mac_type) { - case em_82542_rev2_0: - case em_82542_rev2_1: - case em_82543: - /* Clear SW Defineable Pin 0 to turn off the LED */ - ctrl &= ~E1000_CTRL_SWDPIN0; - ctrl |= E1000_CTRL_SWDPIO0; - break; - case em_82544: - if(hw->media_type == em_media_type_fiber) { - /* Clear SW Defineable Pin 0 to turn off the LED */ - ctrl &= ~E1000_CTRL_SWDPIN0; - ctrl |= E1000_CTRL_SWDPIO0; - } else { - /* Set SW Defineable Pin 0 to turn off the LED */ - ctrl |= E1000_CTRL_SWDPIN0; - ctrl |= E1000_CTRL_SWDPIO0; - } - break; - default: - if(hw->media_type == em_media_type_fiber) { - /* Set SW Defineable Pin 0 to turn off the LED */ - ctrl |= E1000_CTRL_SWDPIN0; - ctrl |= E1000_CTRL_SWDPIO0; - } else if(hw->media_type == em_media_type_copper) { - E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode1); - return E1000_SUCCESS; - } - break; - } - - E1000_WRITE_REG(hw, CTRL, ctrl); - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Clears all hardware statistics counters. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -void -em_clear_hw_cntrs(struct em_hw *hw) -{ - E1000_READ_REG(hw, CRCERRS); - E1000_READ_REG(hw, SYMERRS); - E1000_READ_REG(hw, MPC); - E1000_READ_REG(hw, SCC); - E1000_READ_REG(hw, ECOL); - E1000_READ_REG(hw, MCC); - E1000_READ_REG(hw, LATECOL); - E1000_READ_REG(hw, COLC); - E1000_READ_REG(hw, DC); - E1000_READ_REG(hw, SEC); - E1000_READ_REG(hw, RLEC); - E1000_READ_REG(hw, XONRXC); - E1000_READ_REG(hw, XONTXC); - E1000_READ_REG(hw, XOFFRXC); - E1000_READ_REG(hw, XOFFTXC); - E1000_READ_REG(hw, FCRUC); - E1000_READ_REG(hw, PRC64); - E1000_READ_REG(hw, PRC127); - E1000_READ_REG(hw, PRC255); - E1000_READ_REG(hw, PRC511); - E1000_READ_REG(hw, PRC1023); - E1000_READ_REG(hw, PRC1522); - E1000_READ_REG(hw, GPRC); - E1000_READ_REG(hw, BPRC); - E1000_READ_REG(hw, MPRC); - E1000_READ_REG(hw, GPTC); - E1000_READ_REG(hw, GORCL); - E1000_READ_REG(hw, GORCH); - E1000_READ_REG(hw, GOTCL); - E1000_READ_REG(hw, GOTCH); - E1000_READ_REG(hw, RNBC); - E1000_READ_REG(hw, RUC); - E1000_READ_REG(hw, RFC); - E1000_READ_REG(hw, ROC); - E1000_READ_REG(hw, RJC); - E1000_READ_REG(hw, TORL); - E1000_READ_REG(hw, TORH); - E1000_READ_REG(hw, TOTL); - E1000_READ_REG(hw, TOTH); - E1000_READ_REG(hw, TPR); - E1000_READ_REG(hw, TPT); - E1000_READ_REG(hw, PTC64); - E1000_READ_REG(hw, PTC127); - E1000_READ_REG(hw, PTC255); - E1000_READ_REG(hw, PTC511); - E1000_READ_REG(hw, PTC1023); - E1000_READ_REG(hw, PTC1522); - E1000_READ_REG(hw, MPTC); - E1000_READ_REG(hw, BPTC); - - if(hw->mac_type < em_82543) return; - - E1000_READ_REG(hw, ALGNERRC); - E1000_READ_REG(hw, RXERRC); - E1000_READ_REG(hw, TNCRS); - E1000_READ_REG(hw, CEXTERR); - E1000_READ_REG(hw, TSCTC); - E1000_READ_REG(hw, TSCTFC); - - if(hw->mac_type <= em_82544) return; - - E1000_READ_REG(hw, MGTPRC); - E1000_READ_REG(hw, MGTPDC); - E1000_READ_REG(hw, MGTPTC); - - if(hw->mac_type <= em_82547_rev_2) return; - - E1000_READ_REG(hw, IAC); - E1000_READ_REG(hw, ICRXOC); - E1000_READ_REG(hw, ICRXPTC); - E1000_READ_REG(hw, ICRXATC); - E1000_READ_REG(hw, ICTXPTC); - E1000_READ_REG(hw, ICTXATC); - E1000_READ_REG(hw, ICTXQEC); - E1000_READ_REG(hw, ICTXQMTC); - E1000_READ_REG(hw, ICRXDMTC); - -} - -/****************************************************************************** - * Resets Adaptive IFS to its default state. - * - * hw - Struct containing variables accessed by shared code - * - * Call this after em_init_hw. You may override the IFS defaults by setting - * hw->ifs_params_forced to TRUE. However, you must initialize hw-> - * current_ifs_val, ifs_min_val, ifs_max_val, ifs_step_size, and ifs_ratio - * before calling this function. - *****************************************************************************/ -void -em_reset_adaptive(struct em_hw *hw) -{ - DEBUGFUNC("em_reset_adaptive"); - - if(hw->adaptive_ifs) { - if(!hw->ifs_params_forced) { - hw->current_ifs_val = 0; - hw->ifs_min_val = IFS_MIN; - hw->ifs_max_val = IFS_MAX; - hw->ifs_step_size = IFS_STEP; - hw->ifs_ratio = IFS_RATIO; - } - hw->in_ifs_mode = FALSE; - E1000_WRITE_REG(hw, AIT, 0); - } else { - DEBUGOUT("Not in Adaptive IFS mode!\n"); - } -} - -/****************************************************************************** - * Called during the callback/watchdog routine to update IFS value based on - * the ratio of transmits to collisions. - * - * hw - Struct containing variables accessed by shared code - * tx_packets - Number of transmits since last callback - * total_collisions - Number of collisions since last callback - *****************************************************************************/ -void -em_update_adaptive(struct em_hw *hw) -{ - DEBUGFUNC("em_update_adaptive"); - - if(hw->adaptive_ifs) { - if((hw->collision_delta * hw->ifs_ratio) > hw->tx_packet_delta) { - if(hw->tx_packet_delta > MIN_NUM_XMITS) { - hw->in_ifs_mode = TRUE; - if(hw->current_ifs_val < hw->ifs_max_val) { - if(hw->current_ifs_val == 0) - hw->current_ifs_val = hw->ifs_min_val; - else - hw->current_ifs_val += hw->ifs_step_size; - E1000_WRITE_REG(hw, AIT, hw->current_ifs_val); - } - } - } else { - if(hw->in_ifs_mode && (hw->tx_packet_delta <= MIN_NUM_XMITS)) { - hw->current_ifs_val = 0; - hw->in_ifs_mode = FALSE; - E1000_WRITE_REG(hw, AIT, 0); - } - } - } else { - DEBUGOUT("Not in Adaptive IFS mode!\n"); - } -} - -/****************************************************************************** - * Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT - * - * hw - Struct containing variables accessed by shared code - * frame_len - The length of the frame in question - * mac_addr - The Ethernet destination address of the frame in question - *****************************************************************************/ -void -em_tbi_adjust_stats(struct em_hw *hw, - struct em_hw_stats *stats, - uint32_t frame_len, - uint8_t *mac_addr) -{ - uint64_t carry_bit; - - /* First adjust the frame length. */ - frame_len--; - /* We need to adjust the statistics counters, since the hardware - * counters overcount this packet as a CRC error and undercount - * the packet as a good packet - */ - /* This packet should not be counted as a CRC error. */ - stats->crcerrs--; - /* This packet does count as a Good Packet Received. */ - stats->gprc++; - - /* Adjust the Good Octets received counters */ - carry_bit = 0x80000000 & stats->gorcl; - stats->gorcl += frame_len; - /* If the high bit of Gorcl (the low 32 bits of the Good Octets - * Received Count) was one before the addition, - * AND it is zero after, then we lost the carry out, - * need to add one to Gorch (Good Octets Received Count High). - * This could be simplified if all environments supported - * 64-bit integers. - */ - if(carry_bit && ((stats->gorcl & 0x80000000) == 0)) - stats->gorch++; - /* Is this a broadcast or multicast? Check broadcast first, - * since the test for a multicast frame will test positive on - * a broadcast frame. - */ - if((mac_addr[0] == (uint8_t) 0xff) && (mac_addr[1] == (uint8_t) 0xff)) - /* Broadcast packet */ - stats->bprc++; - else if(*mac_addr & 0x01) - /* Multicast packet */ - stats->mprc++; - - if(frame_len == hw->max_frame_size) { - /* In this case, the hardware has overcounted the number of - * oversize frames. - */ - if(stats->roc > 0) - stats->roc--; - } - - /* Adjust the bin counters when the extra byte put the frame in the - * wrong bin. Remember that the frame_len was adjusted above. - */ - if(frame_len == 64) { - stats->prc64++; - stats->prc127--; - } else if(frame_len == 127) { - stats->prc127++; - stats->prc255--; - } else if(frame_len == 255) { - stats->prc255++; - stats->prc511--; - } else if(frame_len == 511) { - stats->prc511++; - stats->prc1023--; - } else if(frame_len == 1023) { - stats->prc1023++; - stats->prc1522--; - } else if(frame_len == 1522) { - stats->prc1522++; - } -} - -/****************************************************************************** - * Gets the current PCI bus type, speed, and width of the hardware - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -void -em_get_bus_info(struct em_hw *hw) -{ - uint32_t status; - - switch (hw->mac_type) { - case em_82542_rev2_0: - case em_82542_rev2_1: - hw->bus_type = em_bus_type_unknown; - hw->bus_speed = em_bus_speed_unknown; - hw->bus_width = em_bus_width_unknown; - break; - case em_82573: - hw->bus_type = em_bus_type_pci_express; - hw->bus_speed = em_bus_speed_2500; - hw->bus_width = em_bus_width_pciex_4; - break; - default: - status = E1000_READ_REG(hw, STATUS); - hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ? - em_bus_type_pcix : em_bus_type_pci; - - if(hw->device_id == E1000_DEV_ID_82546EB_QUAD_COPPER) { - hw->bus_speed = (hw->bus_type == em_bus_type_pci) ? - em_bus_speed_66 : em_bus_speed_120; - } else if(hw->bus_type == em_bus_type_pci) { - hw->bus_speed = (status & E1000_STATUS_PCI66) ? - em_bus_speed_66 : em_bus_speed_33; - } else { - switch (status & E1000_STATUS_PCIX_SPEED) { - case E1000_STATUS_PCIX_SPEED_66: - hw->bus_speed = em_bus_speed_66; - break; - case E1000_STATUS_PCIX_SPEED_100: - hw->bus_speed = em_bus_speed_100; - break; - case E1000_STATUS_PCIX_SPEED_133: - hw->bus_speed = em_bus_speed_133; - break; - default: - hw->bus_speed = em_bus_speed_reserved; - break; - } - } - hw->bus_width = (status & E1000_STATUS_BUS64) ? - em_bus_width_64 : em_bus_width_32; - break; - } -} -/****************************************************************************** - * Reads a value from one of the devices registers using port I/O (as opposed - * memory mapped I/O). Only 82544 and newer devices support port I/O. - * - * hw - Struct containing variables accessed by shared code - * offset - offset to read from - *****************************************************************************/ -uint32_t -em_read_reg_io(struct em_hw *hw, - uint32_t offset) -{ - unsigned long io_addr = hw->io_base; - unsigned long io_data = hw->io_base + 4; - - em_io_write(hw, io_addr, offset); - return em_io_read(hw, io_data); -} - -/****************************************************************************** - * Writes a value to one of the devices registers using port I/O (as opposed to - * memory mapped I/O). Only 82544 and newer devices support port I/O. - * - * hw - Struct containing variables accessed by shared code - * offset - offset to write to - * value - value to write - *****************************************************************************/ -void -em_write_reg_io(struct em_hw *hw, - uint32_t offset, - uint32_t value) -{ - unsigned long io_addr = hw->io_base; - unsigned long io_data = hw->io_base + 4; - - em_io_write(hw, io_addr, offset); - em_io_write(hw, io_data, value); -} - - -/****************************************************************************** - * Estimates the cable length. - * - * hw - Struct containing variables accessed by shared code - * min_length - The estimated minimum length - * max_length - The estimated maximum length - * - * returns: - E1000_ERR_XXX - * E1000_SUCCESS - * - * This function always returns a ranged length (minimum & maximum). - * So for M88 phy's, this function interprets the one value returned from the - * register to the minimum and maximum range. - * For IGP phy's, the function calculates the range by the AGC registers. - *****************************************************************************/ -int32_t -em_get_cable_length(struct em_hw *hw, - uint16_t *min_length, - uint16_t *max_length) -{ - int32_t ret_val; - uint16_t agc_value = 0; - uint16_t cur_agc, min_agc = IGP01E1000_AGC_LENGTH_TABLE_SIZE; - uint16_t i, phy_data; - uint16_t cable_length; - - DEBUGFUNC("em_get_cable_length"); - - *min_length = *max_length = 0; - - /* Use old method for Phy older than IGP */ - if(hw->phy_type == em_phy_m88) { - - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, - &phy_data); - if(ret_val) - return ret_val; - cable_length = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >> - M88E1000_PSSR_CABLE_LENGTH_SHIFT; - - /* Convert the enum value to ranged values */ - switch (cable_length) { - case em_cable_length_50: - *min_length = 0; - *max_length = em_igp_cable_length_50; - break; - case em_cable_length_50_80: - *min_length = em_igp_cable_length_50; - *max_length = em_igp_cable_length_80; - break; - case em_cable_length_80_110: - *min_length = em_igp_cable_length_80; - *max_length = em_igp_cable_length_110; - break; - case em_cable_length_110_140: - *min_length = em_igp_cable_length_110; - *max_length = em_igp_cable_length_140; - break; - case em_cable_length_140: - *min_length = em_igp_cable_length_140; - *max_length = em_igp_cable_length_170; - break; - default: - return -E1000_ERR_PHY; - break; - } - } else if(hw->phy_type == em_phy_igp) { /* For IGP PHY */ - uint16_t agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = - {IGP01E1000_PHY_AGC_A, - IGP01E1000_PHY_AGC_B, - IGP01E1000_PHY_AGC_C, - IGP01E1000_PHY_AGC_D}; - /* Read the AGC registers for all channels */ - for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { - - ret_val = em_read_phy_reg(hw, agc_reg_array[i], &phy_data); - if(ret_val) - return ret_val; - - cur_agc = phy_data >> IGP01E1000_AGC_LENGTH_SHIFT; - - /* Array bound check. */ - if((cur_agc >= IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1) || - (cur_agc == 0)) - return -E1000_ERR_PHY; - - agc_value += cur_agc; - - /* Update minimal AGC value. */ - if(min_agc > cur_agc) - min_agc = cur_agc; - } - - /* Remove the minimal AGC result for length < 50m */ - if(agc_value < IGP01E1000_PHY_CHANNEL_NUM * em_igp_cable_length_50) { - agc_value -= min_agc; - - /* Get the average length of the remaining 3 channels */ - agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1); - } else { - /* Get the average length of all the 4 channels. */ - agc_value /= IGP01E1000_PHY_CHANNEL_NUM; - } - - /* Set the range of the calculated length. */ - *min_length = ((em_igp_cable_length_table[agc_value] - - IGP01E1000_AGC_RANGE) > 0) ? - (em_igp_cable_length_table[agc_value] - - IGP01E1000_AGC_RANGE) : 0; - *max_length = em_igp_cable_length_table[agc_value] + - IGP01E1000_AGC_RANGE; - } - - return E1000_SUCCESS; -} - -/****************************************************************************** - * Check the cable polarity - * - * hw - Struct containing variables accessed by shared code - * polarity - output parameter : 0 - Polarity is not reversed - * 1 - Polarity is reversed. - * - * returns: - E1000_ERR_XXX - * E1000_SUCCESS - * - * For phy's older then IGP, this function simply reads the polarity bit in the - * Phy Status register. For IGP phy's, this bit is valid only if link speed is - * 10 Mbps. If the link speed is 100 Mbps there is no polarity so this bit will - * return 0. If the link speed is 1000 Mbps the polarity status is in the - * IGP01E1000_PHY_PCS_INIT_REG. - *****************************************************************************/ -int32_t -em_check_polarity(struct em_hw *hw, - uint16_t *polarity) -{ - int32_t ret_val; - uint16_t phy_data; -#ifdef __rtems__ - *polarity = 0; /* keep compiler happy */ -#endif - - DEBUGFUNC("em_check_polarity"); - - if(hw->phy_type == em_phy_m88) { - /* return the Polarity bit in the Status register. */ - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, - &phy_data); - if(ret_val) - return ret_val; - *polarity = (phy_data & M88E1000_PSSR_REV_POLARITY) >> - M88E1000_PSSR_REV_POLARITY_SHIFT; - } else if(hw->phy_type == em_phy_igp || - hw->phy_type == em_phy_igp_2) { - /* Read the Status register to check the speed */ - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, - &phy_data); - if(ret_val) - return ret_val; - - /* If speed is 1000 Mbps, must read the IGP01E1000_PHY_PCS_INIT_REG to - * find the polarity status */ - if((phy_data & IGP01E1000_PSSR_SPEED_MASK) == - IGP01E1000_PSSR_SPEED_1000MBPS) { - - /* Read the GIG initialization PCS register (0x00B4) */ - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG, - &phy_data); - if(ret_val) - return ret_val; - - /* Check the polarity bits */ - *polarity = (phy_data & IGP01E1000_PHY_POLARITY_MASK) ? 1 : 0; - } else { - /* For 10 Mbps, read the polarity bit in the status register. (for - * 100 Mbps this bit is always 0) */ - *polarity = phy_data & IGP01E1000_PSSR_POLARITY_REVERSED; - } - } - return E1000_SUCCESS; -} - -/****************************************************************************** - * Check if Downshift occured - * - * hw - Struct containing variables accessed by shared code - * downshift - output parameter : 0 - No Downshift ocured. - * 1 - Downshift ocured. - * - * returns: - E1000_ERR_XXX - * E1000_SUCCESS - * - * For phy's older then IGP, this function reads the Downshift bit in the Phy - * Specific Status register. For IGP phy's, it reads the Downgrade bit in the - * Link Health register. In IGP this bit is latched high, so the driver must - * read it immediately after link is established. - *****************************************************************************/ -int32_t -em_check_downshift(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t phy_data; - - DEBUGFUNC("em_check_downshift"); - - if(hw->phy_type == em_phy_igp || - hw->phy_type == em_phy_igp_2) { - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_LINK_HEALTH, - &phy_data); - if(ret_val) - return ret_val; - - hw->speed_downgraded = (phy_data & IGP01E1000_PLHR_SS_DOWNGRADE) ? 1 : 0; - } else if(hw->phy_type == em_phy_m88) { - ret_val = em_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, - &phy_data); - if(ret_val) - return ret_val; - - hw->speed_downgraded = (phy_data & M88E1000_PSSR_DOWNSHIFT) >> - M88E1000_PSSR_DOWNSHIFT_SHIFT; - } - - return E1000_SUCCESS; -} - -/***************************************************************************** - * - * 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a - * gigabit link is achieved to improve link quality. - * - * hw: Struct containing variables accessed by shared code - * - * returns: - E1000_ERR_PHY if fail to read/write the PHY - * E1000_SUCCESS at any other case. - * - ****************************************************************************/ - -int32_t -em_config_dsp_after_link_change(struct em_hw *hw, - boolean_t link_up) -{ - int32_t ret_val; - uint16_t phy_data, phy_saved_data, speed, duplex, i; - uint16_t dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = - {IGP01E1000_PHY_AGC_PARAM_A, - IGP01E1000_PHY_AGC_PARAM_B, - IGP01E1000_PHY_AGC_PARAM_C, - IGP01E1000_PHY_AGC_PARAM_D}; - uint16_t min_length, max_length; - - DEBUGFUNC("em_config_dsp_after_link_change"); - - if(hw->phy_type != em_phy_igp) - return E1000_SUCCESS; - - if(link_up) { - ret_val = em_get_speed_and_duplex(hw, &speed, &duplex); - if(ret_val) { - DEBUGOUT("Error getting link speed and duplex\n"); - return ret_val; - } - - if(speed == SPEED_1000) { - - em_get_cable_length(hw, &min_length, &max_length); - - if((hw->dsp_config_state == em_dsp_config_enabled) && - min_length >= em_igp_cable_length_50) { - - for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { - ret_val = em_read_phy_reg(hw, dsp_reg_array[i], - &phy_data); - if(ret_val) - return ret_val; - - phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX; - - ret_val = em_write_phy_reg(hw, dsp_reg_array[i], - phy_data); - if(ret_val) - return ret_val; - } - hw->dsp_config_state = em_dsp_config_activated; - } - - if((hw->ffe_config_state == em_ffe_config_enabled) && - (min_length < em_igp_cable_length_50)) { - - uint16_t ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_20; - uint32_t idle_errs = 0; - - /* clear previous idle error counts */ - ret_val = em_read_phy_reg(hw, PHY_1000T_STATUS, - &phy_data); - if(ret_val) - return ret_val; - - for(i = 0; i < ffe_idle_err_timeout; i++) { - usec_delay(1000); - ret_val = em_read_phy_reg(hw, PHY_1000T_STATUS, - &phy_data); - if(ret_val) - return ret_val; - - idle_errs += (phy_data & SR_1000T_IDLE_ERROR_CNT); - if(idle_errs > SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT) { - hw->ffe_config_state = em_ffe_config_active; - - ret_val = em_write_phy_reg(hw, - IGP01E1000_PHY_DSP_FFE, - IGP01E1000_PHY_DSP_FFE_CM_CP); - if(ret_val) - return ret_val; - break; - } - - if(idle_errs) - ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_100; - } - } - } - } else { - if(hw->dsp_config_state == em_dsp_config_activated) { - /* Save off the current value of register 0x2F5B to be restored at - * the end of the routines. */ - ret_val = em_read_phy_reg(hw, 0x2F5B, &phy_saved_data); - - if(ret_val) - return ret_val; - - /* Disable the PHY transmitter */ - ret_val = em_write_phy_reg(hw, 0x2F5B, 0x0003); - - if(ret_val) - return ret_val; - - msec_delay_irq(20); - - ret_val = em_write_phy_reg(hw, 0x0000, - IGP01E1000_IEEE_FORCE_GIGA); - if(ret_val) - return ret_val; - for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { - ret_val = em_read_phy_reg(hw, dsp_reg_array[i], &phy_data); - if(ret_val) - return ret_val; - - phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX; - phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS; - - ret_val = em_write_phy_reg(hw,dsp_reg_array[i], phy_data); - if(ret_val) - return ret_val; - } - - ret_val = em_write_phy_reg(hw, 0x0000, - IGP01E1000_IEEE_RESTART_AUTONEG); - if(ret_val) - return ret_val; - - msec_delay_irq(20); - - /* Now enable the transmitter */ - ret_val = em_write_phy_reg(hw, 0x2F5B, phy_saved_data); - - if(ret_val) - return ret_val; - - hw->dsp_config_state = em_dsp_config_enabled; - } - - if(hw->ffe_config_state == em_ffe_config_active) { - /* Save off the current value of register 0x2F5B to be restored at - * the end of the routines. */ - ret_val = em_read_phy_reg(hw, 0x2F5B, &phy_saved_data); - - if(ret_val) - return ret_val; - - /* Disable the PHY transmitter */ - ret_val = em_write_phy_reg(hw, 0x2F5B, 0x0003); - - if(ret_val) - return ret_val; - - msec_delay_irq(20); - - ret_val = em_write_phy_reg(hw, 0x0000, - IGP01E1000_IEEE_FORCE_GIGA); - if(ret_val) - return ret_val; - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_DSP_FFE, - IGP01E1000_PHY_DSP_FFE_DEFAULT); - if(ret_val) - return ret_val; - - ret_val = em_write_phy_reg(hw, 0x0000, - IGP01E1000_IEEE_RESTART_AUTONEG); - if(ret_val) - return ret_val; - - msec_delay_irq(20); - - /* Now enable the transmitter */ - ret_val = em_write_phy_reg(hw, 0x2F5B, phy_saved_data); - - if(ret_val) - return ret_val; - - hw->ffe_config_state = em_ffe_config_enabled; - } - } - return E1000_SUCCESS; -} - -/***************************************************************************** - * Set PHY to class A mode - * Assumes the following operations will follow to enable the new class mode. - * 1. Do a PHY soft reset - * 2. Restart auto-negotiation or force link. - * - * hw - Struct containing variables accessed by shared code - ****************************************************************************/ -static int32_t -em_set_phy_mode(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t eeprom_data; - - DEBUGFUNC("em_set_phy_mode"); - - if((hw->mac_type == em_82545_rev_3) && - (hw->media_type == em_media_type_copper)) { - ret_val = em_read_eeprom(hw, EEPROM_PHY_CLASS_WORD, 1, &eeprom_data); - if(ret_val) { - return ret_val; - } - - if((eeprom_data != EEPROM_RESERVED_WORD) && - (eeprom_data & EEPROM_PHY_CLASS_A)) { - ret_val = em_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x000B); - if(ret_val) - return ret_val; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x8104); - if(ret_val) - return ret_val; - - hw->phy_reset_disable = FALSE; - } - } - - return E1000_SUCCESS; -} - -/***************************************************************************** - * - * This function sets the lplu state according to the active flag. When - * activating lplu this function also disables smart speed and vise versa. - * lplu will not be activated unless the device autonegotiation advertisment - * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes. - * hw: Struct containing variables accessed by shared code - * active - true to enable lplu false to disable lplu. - * - * returns: - E1000_ERR_PHY if fail to read/write the PHY - * E1000_SUCCESS at any other case. - * - ****************************************************************************/ - -int32_t -em_set_d3_lplu_state(struct em_hw *hw, - boolean_t active) -{ - int32_t ret_val; - uint16_t phy_data; - DEBUGFUNC("em_set_d3_lplu_state"); - - if(hw->phy_type != em_phy_igp && hw->phy_type != em_phy_igp_2) - return E1000_SUCCESS; - - /* During driver activity LPLU should not be used or it will attain link - * from the lowest speeds starting from 10Mbps. The capability is used for - * Dx transitions and states */ - if(hw->mac_type == em_82541_rev_2 || hw->mac_type == em_82547_rev_2) { - ret_val = em_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &phy_data); - if(ret_val) - return ret_val; - } else { - ret_val = em_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); - if(ret_val) - return ret_val; - } - - if(!active) { - if(hw->mac_type == em_82541_rev_2 || - hw->mac_type == em_82547_rev_2) { - phy_data &= ~IGP01E1000_GMII_FLEX_SPD; - ret_val = em_write_phy_reg(hw, IGP01E1000_GMII_FIFO, phy_data); - if(ret_val) - return ret_val; - } else { - phy_data &= ~IGP02E1000_PM_D3_LPLU; - ret_val = em_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, - phy_data); - if (ret_val) - return ret_val; - } - - /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during - * Dx states where the power conservation is most important. During - * driver activity we should enable SmartSpeed, so performance is - * maintained. */ - if (hw->smart_speed == em_smart_speed_on) { - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, - &phy_data); - if(ret_val) - return ret_val; - - phy_data |= IGP01E1000_PSCFR_SMART_SPEED; - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, - phy_data); - if(ret_val) - return ret_val; - } else if (hw->smart_speed == em_smart_speed_off) { - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, - &phy_data); - if (ret_val) - return ret_val; - - phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, - phy_data); - if(ret_val) - return ret_val; - } - - } else if((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT) || - (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL ) || - (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) { - - if(hw->mac_type == em_82541_rev_2 || - hw->mac_type == em_82547_rev_2) { - phy_data |= IGP01E1000_GMII_FLEX_SPD; - ret_val = em_write_phy_reg(hw, IGP01E1000_GMII_FIFO, phy_data); - if(ret_val) - return ret_val; - } else { - phy_data |= IGP02E1000_PM_D3_LPLU; - ret_val = em_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, - phy_data); - if (ret_val) - return ret_val; - } - - /* When LPLU is enabled we should disable SmartSpeed */ - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); - if(ret_val) - return ret_val; - - phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data); - if(ret_val) - return ret_val; - - } - return E1000_SUCCESS; -} - -/***************************************************************************** - * - * This function sets the lplu d0 state according to the active flag. When - * activating lplu this function also disables smart speed and vise versa. - * lplu will not be activated unless the device autonegotiation advertisment - * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes. - * hw: Struct containing variables accessed by shared code - * active - true to enable lplu false to disable lplu. - * - * returns: - E1000_ERR_PHY if fail to read/write the PHY - * E1000_SUCCESS at any other case. - * - ****************************************************************************/ - -int32_t -em_set_d0_lplu_state(struct em_hw *hw, - boolean_t active) -{ - int32_t ret_val; - uint16_t phy_data; - DEBUGFUNC("em_set_d0_lplu_state"); - - if(hw->mac_type <= em_82547_rev_2) - return E1000_SUCCESS; - - ret_val = em_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); - if(ret_val) - return ret_val; - - if (!active) { - phy_data &= ~IGP02E1000_PM_D0_LPLU; - ret_val = em_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); - if (ret_val) - return ret_val; - - /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during - * Dx states where the power conservation is most important. During - * driver activity we should enable SmartSpeed, so performance is - * maintained. */ - if (hw->smart_speed == em_smart_speed_on) { - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, - &phy_data); - if(ret_val) - return ret_val; - - phy_data |= IGP01E1000_PSCFR_SMART_SPEED; - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, - phy_data); - if(ret_val) - return ret_val; - } else if (hw->smart_speed == em_smart_speed_off) { - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, - &phy_data); - if (ret_val) - return ret_val; - - phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, - phy_data); - if(ret_val) - return ret_val; - } - - - } else { - - phy_data |= IGP02E1000_PM_D0_LPLU; - ret_val = em_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); - if (ret_val) - return ret_val; - - /* When LPLU is enabled we should disable SmartSpeed */ - ret_val = em_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); - if(ret_val) - return ret_val; - - phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; - ret_val = em_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data); - if(ret_val) - return ret_val; - - } - return E1000_SUCCESS; -} - -/****************************************************************************** - * Change VCO speed register to improve Bit Error Rate performance of SERDES. - * - * hw - Struct containing variables accessed by shared code - *****************************************************************************/ -static int32_t -em_set_vco_speed(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t default_page = 0; - uint16_t phy_data; - - DEBUGFUNC("em_set_vco_speed"); - - switch(hw->mac_type) { - case em_82545_rev_3: - case em_82546_rev_3: - break; - default: - return E1000_SUCCESS; - } - - /* Set PHY register 30, page 5, bit 8 to 0 */ - - ret_val = em_read_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, &default_page); - if(ret_val) - return ret_val; - - ret_val = em_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0005); - if(ret_val) - return ret_val; - - ret_val = em_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data); - if(ret_val) - return ret_val; - - phy_data &= ~M88E1000_PHY_VCO_REG_BIT8; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data); - if(ret_val) - return ret_val; - - /* Set PHY register 30, page 4, bit 11 to 1 */ - - ret_val = em_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0004); - if(ret_val) - return ret_val; - - ret_val = em_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data); - if(ret_val) - return ret_val; - - phy_data |= M88E1000_PHY_VCO_REG_BIT11; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data); - if(ret_val) - return ret_val; - - ret_val = em_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, default_page); - if(ret_val) - return ret_val; - - return E1000_SUCCESS; -} - - -/***************************************************************************** - * This function reads the cookie from ARC ram. - * - * returns: - E1000_SUCCESS . - ****************************************************************************/ -int32_t -em_host_if_read_cookie(struct em_hw * hw, uint8_t *buffer) -{ - uint8_t i; - uint32_t offset = E1000_MNG_DHCP_COOKIE_OFFSET; - uint8_t length = E1000_MNG_DHCP_COOKIE_LENGTH; - - length = (length >> 2); - offset = (offset >> 2); - - for (i = 0; i < length; i++) { - *((uint32_t *) buffer + i) = - E1000_READ_REG_ARRAY_DWORD(hw, HOST_IF, offset + i); - } - return E1000_SUCCESS; -} - - -/***************************************************************************** - * This function checks whether the HOST IF is enabled for command operaton - * and also checks whether the previous command is completed. - * It busy waits in case of previous command is not completed. - * - * returns: - E1000_ERR_HOST_INTERFACE_COMMAND in case if is not ready or - * timeout - * - E1000_SUCCESS for success. - ****************************************************************************/ -int32_t -em_mng_enable_host_if(struct em_hw * hw) -{ - uint32_t hicr; - uint8_t i; - - /* Check that the host interface is enabled. */ - hicr = E1000_READ_REG(hw, HICR); - if ((hicr & E1000_HICR_EN) == 0) { - DEBUGOUT("E1000_HOST_EN bit disabled.\n"); - return -E1000_ERR_HOST_INTERFACE_COMMAND; - } - /* check the previous command is completed */ - for (i = 0; i < E1000_MNG_DHCP_COMMAND_TIMEOUT; i++) { - hicr = E1000_READ_REG(hw, HICR); - if (!(hicr & E1000_HICR_C)) - break; - msec_delay_irq(1); - } - - if (i == E1000_MNG_DHCP_COMMAND_TIMEOUT) { - DEBUGOUT("Previous command timeout failed .\n"); - return -E1000_ERR_HOST_INTERFACE_COMMAND; - } - return E1000_SUCCESS; -} - -/***************************************************************************** - * This function writes the buffer content at the offset given on the host if. - * It also does alignment considerations to do the writes in most efficient way. - * Also fills up the sum of the buffer in *buffer parameter. - * - * returns - E1000_SUCCESS for success. - ****************************************************************************/ -int32_t -em_mng_host_if_write(struct em_hw * hw, uint8_t *buffer, - uint16_t length, uint16_t offset, uint8_t *sum) -{ - uint8_t *tmp; - uint8_t *bufptr = buffer; - uint32_t data; - uint16_t remaining, i, j, prev_bytes; - - /* sum = only sum of the data and it is not checksum */ - - if (length == 0 || offset + length > E1000_HI_MAX_MNG_DATA_LENGTH) { - return -E1000_ERR_PARAM; - } - - tmp = (uint8_t *)&data; - prev_bytes = offset & 0x3; - offset &= 0xFFFC; - offset >>= 2; - - if (prev_bytes) { - data = E1000_READ_REG_ARRAY_DWORD(hw, HOST_IF, offset); - for (j = prev_bytes; j < sizeof(uint32_t); j++) { - *(tmp + j) = *bufptr++; - *sum += *(tmp + j); - } - E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset, data); - length -= j - prev_bytes; - offset++; - } - - remaining = length & 0x3; - length -= remaining; - - /* Calculate length in DWORDs */ - length >>= 2; - - /* The device driver writes the relevant command block into the - * ram area. */ - for (i = 0; i < length; i++) { - for (j = 0; j < sizeof(uint32_t); j++) { - *(tmp + j) = *bufptr++; - *sum += *(tmp + j); - } - - E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset + i, data); - } - if (remaining) { - for (j = 0; j < sizeof(uint32_t); j++) { - if (j < remaining) - *(tmp + j) = *bufptr++; - else - *(tmp + j) = 0; - - *sum += *(tmp + j); - } - E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset + i, data); - } - - return E1000_SUCCESS; -} - - -/***************************************************************************** - * This function writes the command header after does the checksum calculation. - * - * returns - E1000_SUCCESS for success. - ****************************************************************************/ -int32_t -em_mng_write_cmd_header(struct em_hw * hw, - struct em_host_mng_command_header * hdr) -{ - uint16_t i; - uint8_t sum; - uint8_t *buffer; - - /* Write the whole command header structure which includes sum of - * the buffer */ - - uint16_t length = sizeof(struct em_host_mng_command_header); - - sum = hdr->checksum; - hdr->checksum = 0; - - buffer = (uint8_t *) hdr; - i = length; - while(i--) - sum += buffer[i]; - - hdr->checksum = 0 - sum; - - length >>= 2; - /* The device driver writes the relevant command block into the ram area. */ - for (i = 0; i < length; i++) - E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, i, *((uint32_t *) hdr + i)); - - return E1000_SUCCESS; -} - - -/***************************************************************************** - * This function indicates to ARC that a new command is pending which completes - * one write operation by the driver. - * - * returns - E1000_SUCCESS for success. - ****************************************************************************/ -int32_t -em_mng_write_commit( - struct em_hw * hw) -{ - uint32_t hicr; - - hicr = E1000_READ_REG(hw, HICR); - /* Setting this bit tells the ARC that a new command is pending. */ - E1000_WRITE_REG(hw, HICR, hicr | E1000_HICR_C); - - return E1000_SUCCESS; -} - - -/***************************************************************************** - * This function checks the mode of the firmware. - * - * returns - TRUE when the mode is IAMT or FALSE. - ****************************************************************************/ -boolean_t -em_check_mng_mode( - struct em_hw *hw) -{ - uint32_t fwsm; - - fwsm = E1000_READ_REG(hw, FWSM); - - if((fwsm & E1000_FWSM_MODE_MASK) == - (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT)) - return TRUE; - - return FALSE; -} - - -/***************************************************************************** - * This function writes the dhcp info . - ****************************************************************************/ -int32_t -em_mng_write_dhcp_info(struct em_hw * hw, uint8_t *buffer, - uint16_t length) -{ - int32_t ret_val; - struct em_host_mng_command_header hdr; - - hdr.command_id = E1000_MNG_DHCP_TX_PAYLOAD_CMD; - hdr.command_length = length; - hdr.reserved1 = 0; - hdr.reserved2 = 0; - hdr.checksum = 0; - - ret_val = em_mng_enable_host_if(hw); - if (ret_val == E1000_SUCCESS) { - ret_val = em_mng_host_if_write(hw, buffer, length, sizeof(hdr), - &(hdr.checksum)); - if (ret_val == E1000_SUCCESS) { - ret_val = em_mng_write_cmd_header(hw, &hdr); - if (ret_val == E1000_SUCCESS) - ret_val = em_mng_write_commit(hw); - } - } - return ret_val; -} - - -/***************************************************************************** - * This function calculates the checksum. - * - * returns - checksum of buffer contents. - ****************************************************************************/ -uint8_t -em_calculate_mng_checksum(char *buffer, uint32_t length) -{ - uint8_t sum = 0; - uint32_t i; - - if (!buffer) - return 0; - - for (i=0; i < length; i++) - sum += buffer[i]; - - return (uint8_t) (0 - sum); -} - -/***************************************************************************** - * This function checks whether tx pkt filtering needs to be enabled or not. - * - * returns - TRUE for packet filtering or FALSE. - ****************************************************************************/ -boolean_t -em_enable_tx_pkt_filtering(struct em_hw *hw) -{ - /* called in init as well as watchdog timer functions */ - - int32_t ret_val, checksum; - boolean_t tx_filter = FALSE; - struct em_host_mng_dhcp_cookie *hdr = &(hw->mng_cookie); - uint8_t *buffer = (uint8_t *) &(hw->mng_cookie); - - if (em_check_mng_mode(hw)) { - ret_val = em_mng_enable_host_if(hw); - if (ret_val == E1000_SUCCESS) { - ret_val = em_host_if_read_cookie(hw, buffer); - if (ret_val == E1000_SUCCESS) { - checksum = hdr->checksum; - hdr->checksum = 0; - if ((hdr->signature == E1000_IAMT_SIGNATURE) && - checksum == em_calculate_mng_checksum((char *)buffer, - E1000_MNG_DHCP_COOKIE_LENGTH)) { - if (hdr->status & - E1000_MNG_DHCP_COOKIE_STATUS_PARSING_SUPPORT) - tx_filter = TRUE; - } else - tx_filter = TRUE; - } else - tx_filter = TRUE; - } - } - - hw->tx_pkt_filtering = tx_filter; - return tx_filter; -} - -/****************************************************************************** - * Verifies the hardware needs to allow ARPs to be processed by the host - * - * hw - Struct containing variables accessed by shared code - * - * returns: - TRUE/FALSE - * - *****************************************************************************/ -uint32_t -em_enable_mng_pass_thru(struct em_hw *hw) -{ - uint32_t manc; - uint32_t fwsm, factps; - - if (hw->asf_firmware_present) { - manc = E1000_READ_REG(hw, MANC); - - if (!(manc & E1000_MANC_RCV_TCO_EN) || - !(manc & E1000_MANC_EN_MAC_ADDR_FILTER)) - return FALSE; - if (em_arc_subsystem_valid(hw) == TRUE) { - fwsm = E1000_READ_REG(hw, FWSM); - factps = E1000_READ_REG(hw, FACTPS); - - if (((fwsm & E1000_FWSM_MODE_MASK) == - (em_mng_mode_pt << E1000_FWSM_MODE_SHIFT)) && - (factps & E1000_FACTPS_MNGCG)) - return TRUE; - } else - if ((manc & E1000_MANC_SMBUS_EN) && !(manc & E1000_MANC_ASF_EN)) - return TRUE; - } - return FALSE; -} - -static int32_t -em_polarity_reversal_workaround(struct em_hw *hw) -{ - int32_t ret_val; - uint16_t mii_status_reg; - uint16_t i; - - /* Polarity reversal workaround for forced 10F/10H links. */ - - /* Disable the transmitter on the PHY */ - - ret_val = em_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019); - if(ret_val) - return ret_val; - ret_val = em_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFFF); - if(ret_val) - return ret_val; - - ret_val = em_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000); - if(ret_val) - return ret_val; - - /* This loop will early-out if the NO link condition has been met. */ - for(i = PHY_FORCE_TIME; i > 0; i--) { - /* Read the MII Status Register and wait for Link Status bit - * to be clear. - */ - - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - - if((mii_status_reg & ~MII_SR_LINK_STATUS) == 0) break; - msec_delay_irq(100); - } - - /* Recommended delay time after link has been lost */ - msec_delay_irq(1000); - - /* Now we will re-enable th transmitter on the PHY */ - - ret_val = em_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019); - if(ret_val) - return ret_val; - msec_delay_irq(50); - ret_val = em_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFF0); - if(ret_val) - return ret_val; - msec_delay_irq(50); - ret_val = em_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFF00); - if(ret_val) - return ret_val; - msec_delay_irq(50); - ret_val = em_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x0000); - if(ret_val) - return ret_val; - - ret_val = em_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000); - if(ret_val) - return ret_val; - - /* This loop will early-out if the link condition has been met. */ - for(i = PHY_FORCE_TIME; i > 0; i--) { - /* Read the MII Status Register and wait for Link Status bit - * to be set. - */ - - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - - ret_val = em_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); - if(ret_val) - return ret_val; - - if(mii_status_reg & MII_SR_LINK_STATUS) break; - msec_delay_irq(100); - } - return E1000_SUCCESS; -} - -/*************************************************************************** - * - * Disables PCI-Express master access. - * - * hw: Struct containing variables accessed by shared code - * - * returns: - none. - * - ***************************************************************************/ -void -em_set_pci_express_master_disable(struct em_hw *hw) -{ - uint32_t ctrl; - - DEBUGFUNC("em_set_pci_express_master_disable"); - - if (hw->bus_type != em_bus_type_pci_express) - return; - - ctrl = E1000_READ_REG(hw, CTRL); - ctrl |= E1000_CTRL_GIO_MASTER_DISABLE; - E1000_WRITE_REG(hw, CTRL, ctrl); -} - -/*************************************************************************** - * - * Enables PCI-Express master access. - * - * hw: Struct containing variables accessed by shared code - * - * returns: - none. - * - ***************************************************************************/ -void -em_enable_pciex_master(struct em_hw *hw) -{ - uint32_t ctrl; - - DEBUGFUNC("em_enable_pciex_master"); - - if (hw->bus_type != em_bus_type_pci_express) - return; - - ctrl = E1000_READ_REG(hw, CTRL); - ctrl &= ~E1000_CTRL_GIO_MASTER_DISABLE; - E1000_WRITE_REG(hw, CTRL, ctrl); -} - -/******************************************************************************* - * - * Disables PCI-Express master access and verifies there are no pending requests - * - * hw: Struct containing variables accessed by shared code - * - * returns: - E1000_ERR_MASTER_REQUESTS_PENDING if master disable bit hasn't - * caused the master requests to be disabled. - * E1000_SUCCESS master requests disabled. - * - ******************************************************************************/ -int32_t -em_disable_pciex_master(struct em_hw *hw) -{ - int32_t timeout = MASTER_DISABLE_TIMEOUT; /* 80ms */ - - DEBUGFUNC("em_disable_pciex_master"); - - if (hw->bus_type != em_bus_type_pci_express) - return E1000_SUCCESS; - - em_set_pci_express_master_disable(hw); - - while(timeout) { - if(!(E1000_READ_REG(hw, STATUS) & E1000_STATUS_GIO_MASTER_ENABLE)) - break; - else - usec_delay(100); - timeout--; - } - - if(!timeout) { - DEBUGOUT("Master requests are pending.\n"); - return -E1000_ERR_MASTER_REQUESTS_PENDING; - } - - return E1000_SUCCESS; -} - -/******************************************************************************* - * - * Check for EEPROM Auto Read bit done. - * - * hw: Struct containing variables accessed by shared code - * - * returns: - E1000_ERR_RESET if fail to reset MAC - * E1000_SUCCESS at any other case. - * - ******************************************************************************/ -int32_t -em_get_auto_rd_done(struct em_hw *hw) -{ - int32_t timeout = AUTO_READ_DONE_TIMEOUT; - - DEBUGFUNC("em_get_auto_rd_done"); - - switch (hw->mac_type) { - default: - msec_delay(5); - break; - case em_82573: - while(timeout) { - if (E1000_READ_REG(hw, EECD) & E1000_EECD_AUTO_RD) break; - else msec_delay(1); - timeout--; - } - - if(!timeout) { - DEBUGOUT("Auto read by HW from EEPROM has not completed.\n"); - return -E1000_ERR_RESET; - } - break; - } - - return E1000_SUCCESS; -} - -/*************************************************************************** - * Checks if the PHY configuration is done - * - * hw: Struct containing variables accessed by shared code - * - * returns: - E1000_ERR_RESET if fail to reset MAC - * E1000_SUCCESS at any other case. - * - ***************************************************************************/ -int32_t -em_get_phy_cfg_done(struct em_hw *hw) -{ - DEBUGFUNC("em_get_phy_cfg_done"); - - /* Simply wait for 10ms */ - msec_delay(10); - - return E1000_SUCCESS; -} - -/*************************************************************************** - * - * Using the combination of SMBI and SWESMBI semaphore bits when resetting - * adapter or Eeprom access. - * - * hw: Struct containing variables accessed by shared code - * - * returns: - E1000_ERR_EEPROM if fail to access EEPROM. - * E1000_SUCCESS at any other case. - * - ***************************************************************************/ -int32_t -em_get_hw_eeprom_semaphore(struct em_hw *hw) -{ - int32_t timeout; - uint32_t swsm; - - DEBUGFUNC("em_get_hw_eeprom_semaphore"); - - if(!hw->eeprom_semaphore_present) - return E1000_SUCCESS; - - - /* Get the FW semaphore. */ - timeout = hw->eeprom.word_size + 1; - while(timeout) { - swsm = E1000_READ_REG(hw, SWSM); - swsm |= E1000_SWSM_SWESMBI; - E1000_WRITE_REG(hw, SWSM, swsm); - /* if we managed to set the bit we got the semaphore. */ - swsm = E1000_READ_REG(hw, SWSM); - if(swsm & E1000_SWSM_SWESMBI) - break; - - usec_delay(50); - timeout--; - } - - if(!timeout) { - /* Release semaphores */ - em_put_hw_eeprom_semaphore(hw); - DEBUGOUT("Driver can't access the Eeprom - SWESMBI bit is set.\n"); - return -E1000_ERR_EEPROM; - } - - return E1000_SUCCESS; -} - -/*************************************************************************** - * This function clears HW semaphore bits. - * - * hw: Struct containing variables accessed by shared code - * - * returns: - None. - * - ***************************************************************************/ -void -em_put_hw_eeprom_semaphore(struct em_hw *hw) -{ - uint32_t swsm; - - DEBUGFUNC("em_put_hw_eeprom_semaphore"); - - if(!hw->eeprom_semaphore_present) - return; - - swsm = E1000_READ_REG(hw, SWSM); - /* Release both semaphores. */ - swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI); - E1000_WRITE_REG(hw, SWSM, swsm); -} - -/****************************************************************************** - * Checks if PHY reset is blocked due to SOL/IDER session, for example. - * Returning E1000_BLK_PHY_RESET isn't necessarily an error. But it's up to - * the caller to figure out how to deal with it. - * - * hw - Struct containing variables accessed by shared code - * - * returns: - E1000_BLK_PHY_RESET - * E1000_SUCCESS - * - *****************************************************************************/ -int32_t -em_check_phy_reset_block(struct em_hw *hw) -{ - uint32_t manc = 0; - if(hw->mac_type > em_82547_rev_2) - manc = E1000_READ_REG(hw, MANC); - return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ? - E1000_BLK_PHY_RESET : E1000_SUCCESS; -} - -uint8_t -em_arc_subsystem_valid(struct em_hw *hw) -{ - uint32_t fwsm; - - /* On 8257x silicon, registers in the range of 0x8800 - 0x8FFC - * may not be provided a DMA clock when no manageability features are - * enabled. We do not want to perform any reads/writes to these registers - * if this is the case. We read FWSM to determine the manageability mode. - */ - switch (hw->mac_type) { - case em_82573: - fwsm = E1000_READ_REG(hw, FWSM); - if((fwsm & E1000_FWSM_MODE_MASK) != 0) - return TRUE; - break; - default: - break; - } - return FALSE; -} - - - |