/******************************************************************************* Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. The full GNU General Public License is included in this distribution in the file called LICENSE. Contact Information: Linux NICS Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 *******************************************************************************/ /* e1000_hw.c * Shared functions for accessing and configuring the MAC */ #include "e1000_hw.h" static int32_t e1000_set_phy_type(struct e1000_hw *hw); static void e1000_phy_init_script(struct e1000_hw *hw); static int32_t e1000_setup_copper_link(struct e1000_hw *hw); static int32_t e1000_setup_fiber_serdes_link(struct e1000_hw *hw); static int32_t e1000_adjust_serdes_amplitude(struct e1000_hw *hw); static int32_t e1000_phy_force_speed_duplex(struct e1000_hw *hw); static int32_t e1000_config_mac_to_phy(struct e1000_hw *hw); static void e1000_raise_mdi_clk(struct e1000_hw *hw, uint32_t *ctrl); static void e1000_lower_mdi_clk(struct e1000_hw *hw, uint32_t *ctrl); static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, uint32_t data, uint16_t count); static uint16_t e1000_shift_in_mdi_bits(struct e1000_hw *hw); static int32_t e1000_phy_reset_dsp(struct e1000_hw *hw); static int32_t e1000_write_eeprom_spi(struct e1000_hw *hw, uint16_t offset, uint16_t words, uint16_t *data); static int32_t e1000_write_eeprom_microwire(struct e1000_hw *hw, uint16_t offset, uint16_t words, uint16_t *data); static int32_t e1000_spi_eeprom_ready(struct e1000_hw *hw); static void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t *eecd); static void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t *eecd); static void e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t count); static int32_t e1000_write_phy_reg_ex(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data); static int32_t e1000_read_phy_reg_ex(struct e1000_hw *hw,uint32_t reg_addr, uint16_t *phy_data); static uint16_t e1000_shift_in_ee_bits(struct e1000_hw *hw, uint16_t count); static int32_t e1000_acquire_eeprom(struct e1000_hw *hw); static void e1000_release_eeprom(struct e1000_hw *hw); static void e1000_standby_eeprom(struct e1000_hw *hw); static int32_t e1000_set_vco_speed(struct e1000_hw *hw); static int32_t e1000_polarity_reversal_workaround(struct e1000_hw *hw); static int32_t e1000_set_phy_mode(struct e1000_hw *hw); static int32_t e1000_host_if_read_cookie(struct e1000_hw *hw, uint8_t *buffer); static uint8_t e1000_calculate_mng_checksum(char *buffer, uint32_t length); static uint8_t e1000_arc_subsystem_valid(struct e1000_hw *hw); static int32_t e1000_check_downshift(struct e1000_hw *hw); static int32_t e1000_check_polarity(struct e1000_hw *hw, uint16_t *polarity); static void e1000_clear_hw_cntrs(struct e1000_hw *hw); static void e1000_clear_vfta(struct e1000_hw *hw); static int32_t e1000_commit_shadow_ram(struct e1000_hw *hw); static int32_t e1000_config_dsp_after_link_change(struct e1000_hw *hw, boolean_t link_up); static int32_t e1000_config_fc_after_link_up(struct e1000_hw *hw); static int32_t e1000_detect_gig_phy(struct e1000_hw *hw); static int32_t e1000_get_auto_rd_done(struct e1000_hw *hw); static int32_t e1000_get_cable_length(struct e1000_hw *hw, uint16_t *min_length, uint16_t *max_length); static int32_t e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw); static int32_t e1000_get_phy_cfg_done(struct e1000_hw *hw); static int32_t e1000_id_led_init(struct e1000_hw * hw); static void e1000_init_rx_addrs(struct e1000_hw *hw); static boolean_t e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw); static int32_t e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd); static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw); static int32_t e1000_read_eeprom_eerd(struct e1000_hw *hw, uint16_t offset, uint16_t words, uint16_t *data); static int32_t e1000_set_d0_lplu_state(struct e1000_hw *hw, boolean_t active); static int32_t e1000_set_d3_lplu_state(struct e1000_hw *hw, boolean_t active); static int32_t e1000_wait_autoneg(struct e1000_hw *hw); static void e1000_write_reg_io(struct e1000_hw *hw, uint32_t offset, uint32_t value); #define E1000_WRITE_REG_IO(a, reg, val) \ e1000_write_reg_io((a), E1000_##reg, val) /* IGP cable length table */ static const uint16_t e1000_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}; static const uint16_t e1000_igp_2_cable_length_table[IGP02E1000_AGC_LENGTH_TABLE_SIZE] = { 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21, 0, 0, 0, 3, 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41, 6, 10, 14, 18, 22, 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61, 21, 26, 31, 35, 40, 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82, 40, 45, 51, 56, 61, 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104, 60, 66, 72, 77, 82, 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121, 83, 89, 95, 100, 105, 109, 113, 116, 119, 122, 124, 104, 109, 114, 118, 121, 124}; /****************************************************************************** * Set the phy type member in the hw struct. * * hw - Struct containing variables accessed by shared code *****************************************************************************/ int32_t e1000_set_phy_type(struct e1000_hw *hw) { DEBUGFUNC("e1000_set_phy_type"); if(hw->mac_type == e1000_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 = e1000_phy_m88; break; case IGP01E1000_I_PHY_ID: if(hw->mac_type == e1000_82541 || hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { hw->phy_type = e1000_phy_igp; break; } /* Fall Through */ default: /* Should never have loaded on this device */ hw->phy_type = e1000_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 e1000_phy_init_script(struct e1000_hw *hw) { uint32_t ret_val; uint16_t phy_saved_data; DEBUGFUNC("e1000_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. */ ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); /* Disabled the PHY transmitter */ e1000_write_phy_reg(hw, 0x2F5B, 0x0003); msec_delay(20); e1000_write_phy_reg(hw,0x0000,0x0140); msec_delay(5); switch(hw->mac_type) { case e1000_82541: case e1000_82547: e1000_write_phy_reg(hw, 0x1F95, 0x0001); e1000_write_phy_reg(hw, 0x1F71, 0xBD21); e1000_write_phy_reg(hw, 0x1F79, 0x0018); e1000_write_phy_reg(hw, 0x1F30, 0x1600); e1000_write_phy_reg(hw, 0x1F31, 0x0014); e1000_write_phy_reg(hw, 0x1F32, 0x161C); e1000_write_phy_reg(hw, 0x1F94, 0x0003); e1000_write_phy_reg(hw, 0x1F96, 0x003F); e1000_write_phy_reg(hw, 0x2010, 0x0008); break; case e1000_82541_rev_2: case e1000_82547_rev_2: e1000_write_phy_reg(hw, 0x1F73, 0x0099); break; default: break; } e1000_write_phy_reg(hw, 0x0000, 0x3300); msec_delay(20); /* Now enable the transmitter */ e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); if(hw->mac_type == e1000_82547) { uint16_t fused, fine, coarse; /* Move to analog registers page */ e1000_read_phy_reg(hw, IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused); if(!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) { e1000_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); e1000_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_CONTROL, fused); e1000_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 e1000_set_mac_type(struct e1000_hw *hw) { DEBUGFUNC("e1000_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 = e1000_82542_rev2_0; break; case E1000_82542_2_1_REV_ID: hw->mac_type = e1000_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 = e1000_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 = e1000_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 = e1000_82540; break; case E1000_DEV_ID_82545EM_COPPER: case E1000_DEV_ID_82545EM_FIBER: hw->mac_type = e1000_82545; break; case E1000_DEV_ID_82545GM_COPPER: case E1000_DEV_ID_82545GM_FIBER: case E1000_DEV_ID_82545GM_SERDES: hw->mac_type = e1000_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 = e1000_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: hw->mac_type = e1000_82546_rev_3; break; case E1000_DEV_ID_82541EI: case E1000_DEV_ID_82541EI_MOBILE: hw->mac_type = e1000_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 = e1000_82541_rev_2; break; case E1000_DEV_ID_82547EI: hw->mac_type = e1000_82547; break; case E1000_DEV_ID_82547GI: hw->mac_type = e1000_82547_rev_2; break; case E1000_DEV_ID_82571EB_COPPER: case E1000_DEV_ID_82571EB_FIBER: case E1000_DEV_ID_82571EB_SERDES: hw->mac_type = e1000_82571; break; case E1000_DEV_ID_82572EI_COPPER: case E1000_DEV_ID_82572EI_FIBER: case E1000_DEV_ID_82572EI_SERDES: hw->mac_type = e1000_82572; break; case E1000_DEV_ID_82573E: case E1000_DEV_ID_82573E_IAMT: case E1000_DEV_ID_82573L: hw->mac_type = e1000_82573; break; default: /* Should never have loaded on this device */ return -E1000_ERR_MAC_TYPE; } switch(hw->mac_type) { case e1000_82571: case e1000_82572: case e1000_82573: hw->eeprom_semaphore_present = TRUE; /* fall through */ case e1000_82541: case e1000_82547: case e1000_82541_rev_2: case e1000_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 e1000_set_media_type(struct e1000_hw *hw) { uint32_t status; DEBUGFUNC("e1000_set_media_type"); if(hw->mac_type != e1000_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: case E1000_DEV_ID_82571EB_SERDES: case E1000_DEV_ID_82572EI_SERDES: hw->media_type = e1000_media_type_internal_serdes; break; default: switch (hw->mac_type) { case e1000_82542_rev2_0: case e1000_82542_rev2_1: hw->media_type = e1000_media_type_fiber; break; case e1000_82573: /* The STATUS_TBIMODE bit is reserved or reused for the this * device. */ hw->media_type = e1000_media_type_copper; break; default: status = E1000_READ_REG(hw, STATUS); if (status & E1000_STATUS_TBIMODE) { hw->media_type = e1000_media_type_fiber; /* tbi_compatibility not valid on fiber */ hw->tbi_compatibility_en = FALSE; } else { hw->media_type = e1000_media_type_copper; } break; } } } /****************************************************************************** * Reset the transmit and receive units; mask and clear all interrupts. * * hw - Struct containing variables accessed by shared code *****************************************************************************/ int32_t e1000_reset_hw(struct e1000_hw *hw) { uint32_t ctrl; uint32_t ctrl_ext; uint32_t icr; uint32_t manc; uint32_t led_ctrl; uint32_t timeout; uint32_t extcnf_ctrl; int32_t ret_val; DEBUGFUNC("e1000_reset_hw"); /* For 82542 (rev 2.0), disable MWI before issuing a device reset */ if(hw->mac_type == e1000_82542_rev2_0) { DEBUGOUT("Disabling MWI on 82542 rev 2.0\n"); e1000_pci_clear_mwi(hw); } if(hw->bus_type == e1000_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(e1000_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 == e1000_82541) || (hw->mac_type == e1000_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 == e1000_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 e1000_82544: case e1000_82540: case e1000_82545: case e1000_82546: case e1000_82541: case e1000_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 e1000_82545_rev_3: case e1000_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 e1000_82542_rev2_0: case e1000_82542_rev2_1: case e1000_82543: case e1000_82544: /* Wait for reset to complete */ udelay(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 e1000_82541: case e1000_82541_rev_2: case e1000_82547: case e1000_82547_rev_2: /* Wait for EEPROM reload */ msec_delay(20); break; case e1000_82573: udelay(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 */ case e1000_82571: case e1000_82572: ret_val = e1000_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 >= e1000_82540 && hw->mac_type <= e1000_82547_rev_2) { manc = E1000_READ_REG(hw, MANC); manc &= ~(E1000_MANC_ARP_EN); E1000_WRITE_REG(hw, MANC, manc); } if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { e1000_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. */ icr = E1000_READ_REG(hw, ICR); /* If MWI was previously enabled, reenable it. */ if(hw->mac_type == e1000_82542_rev2_0) { if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE) e1000_pci_set_mwi(hw); } 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 e1000_init_hw(struct e1000_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("e1000_init_hw"); /* Initialize Identification LED */ ret_val = e1000_id_led_init(hw); if(ret_val) { DEBUGOUT("Error Initializing Identification LED\n"); return ret_val; } /* Set the media type and TBI compatibility */ e1000_set_media_type(hw); /* Disabling VLAN filtering. */ DEBUGOUT("Initializing the IEEE VLAN\n"); if (hw->mac_type < e1000_82545_rev_3) E1000_WRITE_REG(hw, VET, 0); e1000_clear_vfta(hw); /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */ if(hw->mac_type == e1000_82542_rev2_0) { DEBUGOUT("Disabling MWI on 82542 rev 2.0\n"); e1000_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). */ e1000_init_rx_addrs(hw); /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */ if(hw->mac_type == e1000_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) e1000_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 <= e1000_82543) { ctrl = E1000_READ_REG(hw, CTRL); E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PRIOR); } switch(hw->mac_type) { case e1000_82545_rev_3: case e1000_82546_rev_3: break; default: /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */ if(hw->bus_type == e1000_bus_type_pcix) { e1000_read_pci_cfg(hw, PCIX_COMMAND_REGISTER, &pcix_cmd_word); e1000_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; e1000_write_pci_cfg(hw, PCIX_COMMAND_REGISTER, &pcix_cmd_word); } } break; } /* Call a subroutine to configure the link and setup flow control. */ ret_val = e1000_setup_link(hw); /* Set the transmit descriptor write-back policy */ if(hw->mac_type > e1000_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 e1000_82571: case e1000_82572: ctrl |= (1 << 22); case e1000_82573: ctrl |= E1000_TXDCTL_COUNT_DESC; break; } E1000_WRITE_REG(hw, TXDCTL, ctrl); } if (hw->mac_type == e1000_82573) { e1000_enable_tx_pkt_filtering(hw); } switch (hw->mac_type) { default: break; case e1000_82571: case e1000_82572: ctrl = E1000_READ_REG(hw, TXDCTL1); ctrl &= ~E1000_TXDCTL_WTHRESH; ctrl |= E1000_TXDCTL_COUNT_DESC | E1000_TXDCTL_FULL_TX_DESC_WB; ctrl |= (1 << 22); E1000_WRITE_REG(hw, TXDCTL1, ctrl); break; } if (hw->mac_type == e1000_82573) { uint32_t gcr = E1000_READ_REG(hw, GCR); gcr |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX; E1000_WRITE_REG(hw, GCR, gcr); } /* 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. */ e1000_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 e1000_adjust_serdes_amplitude(struct e1000_hw *hw) { uint16_t eeprom_data; int32_t ret_val; DEBUGFUNC("e1000_adjust_serdes_amplitude"); if(hw->media_type != e1000_media_type_internal_serdes) return E1000_SUCCESS; switch(hw->mac_type) { case e1000_82545_rev_3: case e1000_82546_rev_3: break; default: return E1000_SUCCESS; } ret_val = e1000_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 = e1000_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 e1000_setup_link(struct e1000_hw *hw) { uint32_t ctrl_ext; int32_t ret_val; uint16_t eeprom_data; DEBUGFUNC("e1000_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(e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data)) { DEBUGOUT("EEPROM Read Error\n"); return -E1000_ERR_EEPROM; } if(hw->fc == e1000_fc_default) { if((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0) hw->fc = e1000_fc_none; else if((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == EEPROM_WORD0F_ASM_DIR) hw->fc = e1000_fc_tx_pause; else hw->fc = e1000_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 == e1000_82542_rev2_0) hw->fc &= (~e1000_fc_tx_pause); if((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1)) hw->fc &= (~e1000_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 e1000_setup_pcs_link() * or e1000_phy_setup() is called. */ if(hw->mac_type == e1000_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 == e1000_media_type_copper) ? e1000_setup_copper_link(hw) : e1000_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 & e1000_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 e1000_setup_fiber_serdes_link(struct e1000_hw *hw) { uint32_t ctrl; uint32_t status; uint32_t txcw = 0; uint32_t i; uint32_t signal = 0; int32_t ret_val; DEBUGFUNC("e1000_setup_fiber_serdes_link"); /* On 82571 and 82572 Fiber connections, SerDes loopback mode persists * until explicitly turned off or a power cycle is performed. A read to * the register does not indicate its status. Therefore, we ensure * loopback mode is disabled during initialization. */ if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) E1000_WRITE_REG(hw, SCTL, E1000_DISABLE_SERDES_LOOPBACK); /* 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 == e1000_media_type_fiber) signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0; ret_val = e1000_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 = e1000_set_vco_speed(hw); if(ret_val) return ret_val; e1000_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 e1000_fc_none: /* Flow control is completely disabled by a software over-ride. */ txcw = (E1000_TXCW_ANE | E1000_TXCW_FD); break; case e1000_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 e1000_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 e1000_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 == e1000_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 * e1000_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 = e1000_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 e1000_copper_link_preconfig(struct e1000_hw *hw) { uint32_t ctrl; int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_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 > e1000_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 = e1000_phy_hw_reset(hw); if(ret_val) return ret_val; } /* Make sure we have a valid PHY */ ret_val = e1000_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 = e1000_set_phy_mode(hw); if(ret_val) return ret_val; if((hw->mac_type == e1000_82545_rev_3) || (hw->mac_type == e1000_82546_rev_3)) { ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); phy_data |= 0x00000008; ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); } if(hw->mac_type <= e1000_82543 || hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 || hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2) hw->phy_reset_disable = FALSE; return E1000_SUCCESS; } /******************************************************************** * Copper link setup for e1000_phy_igp series. * * hw - Struct containing variables accessed by shared code *********************************************************************/ static int32_t e1000_copper_link_igp_setup(struct e1000_hw *hw) { uint32_t led_ctrl; int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_copper_link_igp_setup"); if (hw->phy_reset_disable) return E1000_SUCCESS; ret_val = e1000_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 = e1000_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 = e1000_set_d0_lplu_state(hw, FALSE); if (ret_val) { DEBUGOUT("Error Disabling LPLU D0\n"); return ret_val; } /* Configure mdi-mdix settings */ ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); if (ret_val) return ret_val; if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { hw->dsp_config_state = e1000_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 = e1000_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 = e1000_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) { e1000_ms_type phy_ms_setting = hw->master_slave; if(hw->ffe_config_state == e1000_ffe_config_active) hw->ffe_config_state = e1000_ffe_config_enabled; if(hw->dsp_config_state == e1000_dsp_config_activated) hw->dsp_config_state = e1000_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 = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); if(ret_val) return ret_val; phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data); if(ret_val) return ret_val; /* Set auto Master/Slave resolution process */ ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data); if(ret_val) return ret_val; phy_data &= ~CR_1000T_MS_ENABLE; ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); if(ret_val) return ret_val; } ret_val = e1000_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) ? e1000_ms_force_master : e1000_ms_force_slave) : e1000_ms_auto; switch (phy_ms_setting) { case e1000_ms_force_master: phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE); break; case e1000_ms_force_slave: phy_data |= CR_1000T_MS_ENABLE; phy_data &= ~(CR_1000T_MS_VALUE); break; case e1000_ms_auto: phy_data &= ~CR_1000T_MS_ENABLE; default: break; } ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); if(ret_val) return ret_val; } return E1000_SUCCESS; } /******************************************************************** * Copper link setup for e1000_phy_m88 series. * * hw - Struct containing variables accessed by shared code *********************************************************************/ static int32_t e1000_copper_link_mgp_setup(struct e1000_hw *hw) { int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_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 = e1000_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 = e1000_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 = e1000_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 = e1000_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 = e1000_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 e1000_copper_link_autoneg(struct e1000_hw *hw) { int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_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 = e1000_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 = e1000_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 = e1000_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 = e1000_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 e1000_copper_link_postconfig(struct e1000_hw *hw) { int32_t ret_val; DEBUGFUNC("e1000_copper_link_postconfig"); if(hw->mac_type >= e1000_82544) { e1000_config_collision_dist(hw); } else { ret_val = e1000_config_mac_to_phy(hw); if(ret_val) { DEBUGOUT("Error configuring MAC to PHY settings\n"); return ret_val; } } ret_val = e1000_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 == e1000_phy_igp) { ret_val = e1000_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 e1000_setup_copper_link(struct e1000_hw *hw) { int32_t ret_val; uint16_t i; uint16_t phy_data; DEBUGFUNC("e1000_setup_copper_link"); /* Check if it is a valid PHY and set PHY mode if necessary. */ ret_val = e1000_copper_link_preconfig(hw); if(ret_val) return ret_val; if (hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2) { ret_val = e1000_copper_link_igp_setup(hw); if(ret_val) return ret_val; } else if (hw->phy_type == e1000_phy_m88) { ret_val = e1000_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 = e1000_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 = e1000_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 = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); if(ret_val) return ret_val; ret_val = e1000_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 = e1000_copper_link_postconfig(hw); if(ret_val) return ret_val; DEBUGOUT("Valid link established!!!\n"); return E1000_SUCCESS; } udelay(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 e1000_phy_setup_autoneg(struct e1000_hw *hw) { int32_t ret_val; uint16_t mii_autoneg_adv_reg; uint16_t mii_1000t_ctrl_reg; DEBUGFUNC("e1000_phy_setup_autoneg"); /* Read the MII Auto-Neg Advertisement Register (Address 4). */ ret_val = e1000_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 = e1000_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 e1000_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 e1000_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 e1000_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 e1000_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 e1000_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 = e1000_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 = e1000_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 e1000_phy_force_speed_duplex(struct e1000_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("e1000_phy_force_speed_duplex"); /* Turn off Flow control if we are forcing speed and duplex. */ hw->fc = e1000_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 = e1000_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 == e1000_100_full || hw->forced_speed_duplex == e1000_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 == e1000_100_full || hw->forced_speed_duplex == e1000_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 "); } e1000_config_collision_dist(hw); /* Write the configured values back to the Device Control Reg. */ E1000_WRITE_REG(hw, CTRL, ctrl); if (hw->phy_type == e1000_phy_m88) { ret_val = e1000_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 = e1000_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 = e1000_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 = e1000_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 = e1000_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg); if(ret_val) return ret_val; udelay(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 = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); if(ret_val) return ret_val; ret_val = e1000_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 == e1000_phy_m88)) { /* We didn't get link. Reset the DSP and wait again for link. */ ret_val = e1000_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 = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); if(ret_val) return ret_val; ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); if(ret_val) return ret_val; } } if (hw->phy_type == e1000_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 = e1000_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 = e1000_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 = e1000_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 = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); if(ret_val) return ret_val; if((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543) && (!hw->autoneg) && (hw->forced_speed_duplex == e1000_10_full || hw->forced_speed_duplex == e1000_10_half)) { ret_val = e1000_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 e1000_config_collision_dist(struct e1000_hw *hw) { uint32_t tctl; DEBUGFUNC("e1000_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 e1000_config_mac_to_phy(struct e1000_hw *hw) { uint32_t ctrl; int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_config_mac_to_phy"); /* 82544 or newer MAC, Auto Speed Detection takes care of * MAC speed/duplex configuration.*/ if (hw->mac_type >= e1000_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 = e1000_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; e1000_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 e1000_force_mac_fc(struct e1000_hw *hw) { uint32_t ctrl; DEBUGFUNC("e1000_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 e1000_fc_none: ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE)); break; case e1000_fc_rx_pause: ctrl &= (~E1000_CTRL_TFCE); ctrl |= E1000_CTRL_RFCE; break; case e1000_fc_tx_pause: ctrl &= (~E1000_CTRL_RFCE); ctrl |= E1000_CTRL_TFCE; break; case e1000_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 == e1000_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. *****************************************************************************/ static int32_t e1000_config_fc_after_link_up(struct e1000_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("e1000_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 == e1000_media_type_fiber) && (hw->autoneg_failed)) || ((hw->media_type == e1000_media_type_internal_serdes) && (hw->autoneg_failed)) || ((hw->media_type == e1000_media_type_copper) && (!hw->autoneg))) { ret_val = e1000_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 == e1000_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 = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); if(ret_val) return ret_val; ret_val = e1000_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 = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_nway_adv_reg); if(ret_val) return ret_val; ret_val = e1000_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 | e1000_fc_none * 0 | 1 | 0 | DC | e1000_fc_none * 0 | 1 | 1 | 0 | e1000_fc_none * 0 | 1 | 1 | 1 | e1000_fc_tx_pause * 1 | 0 | 0 | DC | e1000_fc_none * 1 | DC | 1 | DC | e1000_fc_full * 1 | 1 | 0 | 0 | e1000_fc_none * 1 | 1 | 0 | 1 | e1000_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 | e1000_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 == e1000_fc_full) { hw->fc = e1000_fc_full; DEBUGOUT("Flow Control = FULL.\r\n"); } else { hw->fc = e1000_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 | e1000_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 = e1000_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 | e1000_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 = e1000_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 == e1000_fc_none || hw->original_fc == e1000_fc_tx_pause) || hw->fc_strict_ieee) { hw->fc = e1000_fc_none; DEBUGOUT("Flow Control = NONE.\r\n"); } else { hw->fc = e1000_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 = e1000_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 = e1000_fc_none; /* Now we call a subroutine to actually force the MAC * controller to use the correct flow control settings. */ ret_val = e1000_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 e1000_check_for_link(struct e1000_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("e1000_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 == e1000_media_type_fiber) || (hw->media_type == e1000_media_type_internal_serdes)) { rxcw = E1000_READ_REG(hw, RXCW); if(hw->media_type == e1000_media_type_fiber) { signal = (hw->mac_type > e1000_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 == e1000_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 = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); if(ret_val) return ret_val; ret_val = e1000_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 */ e1000_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 == e1000_82544 || hw->mac_type == e1000_82543) && (!hw->autoneg) && (hw->forced_speed_duplex == e1000_10_full || hw->forced_speed_duplex == e1000_10_half)) { E1000_WRITE_REG(hw, IMC, 0xffffffff); ret_val = e1000_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 */ e1000_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 */ e1000_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 >= e1000_82544) e1000_config_collision_dist(hw); else { ret_val = e1000_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 = e1000_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; e1000_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 == e1000_media_type_fiber) && ((ctrl & E1000_CTRL_SWDPIN1) == signal)) || (hw->media_type == e1000_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 = e1000_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 == e1000_media_type_fiber) || (hw->media_type == e1000_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 == e1000_media_type_internal_serdes) && !(E1000_TXCW_ANE & E1000_READ_REG(hw, TXCW))) { /* SYNCH bit and IV bit are sticky. */ udelay(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 == e1000_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 e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t *speed, uint16_t *duplex) { uint32_t status; int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_get_speed_and_duplex"); if(hw->mac_type >= e1000_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 == e1000_phy_igp && hw->speed_downgraded) { ret_val = e1000_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 = e1000_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 ******************************************************************************/ static int32_t e1000_wait_autoneg(struct e1000_hw *hw) { int32_t ret_val; uint16_t i; uint16_t phy_data; DEBUGFUNC("e1000_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 = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); if(ret_val) return ret_val; ret_val = e1000_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 e1000_raise_mdi_clk(struct e1000_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); udelay(10); } /****************************************************************************** * Lowers the Management Data Clock * * hw - Struct containing variables accessed by shared code * ctrl - Device control register's current value ******************************************************************************/ static void e1000_lower_mdi_clk(struct e1000_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); udelay(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 e1000_shift_out_mdi_bits(struct e1000_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); udelay(10); e1000_raise_mdi_clk(hw, &ctrl); e1000_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 e1000_shift_in_mdi_bits(struct e1000_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. */ e1000_raise_mdi_clk(hw, &ctrl); e1000_lower_mdi_clk(hw, &ctrl); for(data = 0, i = 0; i < 16; i++) { data = data << 1; e1000_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; e1000_lower_mdi_clk(hw, &ctrl); } e1000_raise_mdi_clk(hw, &ctrl); e1000_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 e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *phy_data) { uint32_t ret_val; DEBUGFUNC("e1000_read_phy_reg"); if((hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2) && (reg_addr > MAX_PHY_MULTI_PAGE_REG)) { ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT, (uint16_t)reg_addr); if(ret_val) { return ret_val; } } ret_val = e1000_read_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr, phy_data); return ret_val; } int32_t e1000_read_phy_reg_ex(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *phy_data) { uint32_t i; uint32_t mdic = 0; const uint32_t phy_addr = 1; DEBUGFUNC("e1000_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 > e1000_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++) { udelay(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. */ e1000_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 * e1000_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: * * 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)); e1000_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 = e1000_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 e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data) { uint32_t ret_val; DEBUGFUNC("e1000_write_phy_reg"); if((hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2) && (reg_addr > MAX_PHY_MULTI_PAGE_REG)) { ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT, (uint16_t)reg_addr); if(ret_val) { return ret_val; } } ret_val = e1000_write_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr, phy_data); return ret_val; } int32_t e1000_write_phy_reg_ex(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data) { uint32_t i; uint32_t mdic = 0; const uint32_t phy_addr = 1; DEBUGFUNC("e1000_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 > e1000_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++) { udelay(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. */ e1000_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 * e1000_shift_out_mdi_bits routine for each field in the command. The * format of a MII write instruction is as follows: * . */ mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) | (PHY_OP_WRITE << 12) | (PHY_SOF << 14)); mdic <<= 16; mdic |= (uint32_t) phy_data; e1000_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 e1000_phy_hw_reset(struct e1000_hw *hw) { uint32_t ctrl, ctrl_ext; uint32_t led_ctrl; int32_t ret_val; DEBUGFUNC("e1000_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 = e1000_check_phy_reset_block(hw); if (ret_val) return E1000_SUCCESS; DEBUGOUT("Resetting Phy...\n"); if(hw->mac_type > e1000_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); } udelay(150); if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_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 = e1000_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 e1000_phy_reset(struct e1000_hw *hw) { int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_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 = e1000_check_phy_reset_block(hw); if (ret_val) return E1000_SUCCESS; switch (hw->mac_type) { case e1000_82541_rev_2: case e1000_82571: case e1000_82572: ret_val = e1000_phy_hw_reset(hw); if(ret_val) return ret_val; break; default: ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data); if(ret_val) return ret_val; phy_data |= MII_CR_RESET; ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data); if(ret_val) return ret_val; udelay(1); break; } if(hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2) e1000_phy_init_script(hw); return E1000_SUCCESS; } /****************************************************************************** * Probes the expected PHY address for known PHY IDs * * hw - Struct containing variables accessed by shared code ******************************************************************************/ static int32_t e1000_detect_gig_phy(struct e1000_hw *hw) { int32_t phy_init_status, ret_val; uint16_t phy_id_high, phy_id_low; boolean_t match = FALSE; DEBUGFUNC("e1000_detect_gig_phy"); /* The 82571 firmware may still be configuring the PHY. In this * case, we cannot access the PHY until the configuration is done. So * we explicitly set the PHY values. */ if(hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { hw->phy_id = IGP01E1000_I_PHY_ID; hw->phy_type = e1000_phy_igp_2; return E1000_SUCCESS; } /* Read the PHY ID Registers to identify which PHY is onboard. */ ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high); if(ret_val) return ret_val; hw->phy_id = (uint32_t) (phy_id_high << 16); udelay(20); ret_val = e1000_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 e1000_82543: if(hw->phy_id == M88E1000_E_PHY_ID) match = TRUE; break; case e1000_82544: if(hw->phy_id == M88E1000_I_PHY_ID) match = TRUE; break; case e1000_82540: case e1000_82545: case e1000_82545_rev_3: case e1000_82546: case e1000_82546_rev_3: if(hw->phy_id == M88E1011_I_PHY_ID) match = TRUE; break; case e1000_82541: case e1000_82541_rev_2: case e1000_82547: case e1000_82547_rev_2: if(hw->phy_id == IGP01E1000_I_PHY_ID) match = TRUE; break; case e1000_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 = e1000_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 e1000_phy_reset_dsp(struct e1000_hw *hw) { int32_t ret_val; DEBUGFUNC("e1000_phy_reset_dsp"); do { ret_val = e1000_write_phy_reg(hw, 29, 0x001d); if(ret_val) break; ret_val = e1000_write_phy_reg(hw, 30, 0x00c1); if(ret_val) break; ret_val = e1000_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 ******************************************************************************/ static int32_t e1000_phy_igp_get_info(struct e1000_hw *hw, struct e1000_phy_info *phy_info) { int32_t ret_val; uint16_t phy_data, polarity, min_length, max_length, average; DEBUGFUNC("e1000_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 = (e1000_downshift)hw->speed_downgraded; /* IGP01E1000 does not need to support it. */ phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_normal; /* IGP01E1000 always correct polarity reversal */ phy_info->polarity_correction = e1000_polarity_reversal_enabled; /* Check polarity status */ ret_val = e1000_check_polarity(hw, &polarity); if(ret_val) return ret_val; phy_info->cable_polarity = polarity; ret_val = e1000_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 = e1000_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 = e1000_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 <= e1000_igp_cable_length_50) phy_info->cable_length = e1000_cable_length_50; else if(average <= e1000_igp_cable_length_80) phy_info->cable_length = e1000_cable_length_50_80; else if(average <= e1000_igp_cable_length_110) phy_info->cable_length = e1000_cable_length_80_110; else if(average <= e1000_igp_cable_length_140) phy_info->cable_length = e1000_cable_length_110_140; else phy_info->cable_length = e1000_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 ******************************************************************************/ static int32_t e1000_phy_m88_get_info(struct e1000_hw *hw, struct e1000_phy_info *phy_info) { int32_t ret_val; uint16_t phy_data, polarity; DEBUGFUNC("e1000_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 = (e1000_downshift)hw->speed_downgraded; ret_val = e1000_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 = e1000_check_polarity(hw, &polarity); if(ret_val) return ret_val; phy_info->cable_polarity = polarity; ret_val = e1000_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 = e1000_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 e1000_phy_get_info(struct e1000_hw *hw, struct e1000_phy_info *phy_info) { int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_phy_get_info"); phy_info->cable_length = e1000_cable_length_undefined; phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_undefined; phy_info->cable_polarity = e1000_rev_polarity_undefined; phy_info->downshift = e1000_downshift_undefined; phy_info->polarity_correction = e1000_polarity_reversal_undefined; phy_info->mdix_mode = e1000_auto_x_mode_undefined; phy_info->local_rx = e1000_1000t_rx_status_undefined; phy_info->remote_rx = e1000_1000t_rx_status_undefined; if(hw->media_type != e1000_media_type_copper) { DEBUGOUT("PHY info is only valid for copper media\n"); return -E1000_ERR_CONFIG; } ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); if(ret_val) return ret_val; ret_val = e1000_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 == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2) return e1000_phy_igp_get_info(hw, phy_info); else return e1000_phy_m88_get_info(hw, phy_info); } int32_t e1000_validate_mdi_setting(struct e1000_hw *hw) { DEBUGFUNC("e1000_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 e1000_init_eeprom_params(struct e1000_hw *hw) { struct e1000_eeprom_info *eeprom = &hw->eeprom; uint32_t eecd = E1000_READ_REG(hw, EECD); int32_t ret_val = E1000_SUCCESS; uint16_t eeprom_size; DEBUGFUNC("e1000_init_eeprom_params"); switch (hw->mac_type) { case e1000_82542_rev2_0: case e1000_82542_rev2_1: case e1000_82543: case e1000_82544: eeprom->type = e1000_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 e1000_82540: case e1000_82545: case e1000_82545_rev_3: case e1000_82546: case e1000_82546_rev_3: eeprom->type = e1000_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 e1000_82541: case e1000_82541_rev_2: case e1000_82547: case e1000_82547_rev_2: if (eecd & E1000_EECD_TYPE) { eeprom->type = e1000_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 = e1000_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 e1000_82571: case e1000_82572: eeprom->type = e1000_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 = FALSE; eeprom->use_eewr = FALSE; break; case e1000_82573: eeprom->type = e1000_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(e1000_is_onboard_nvm_eeprom(hw) == FALSE) { eeprom->type = e1000_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 == e1000_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 <= e1000_82547_rev_2) { /* Set to default value for initial eeprom read. */ eeprom->word_size = 64; ret_val = e1000_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 e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t *eecd) { /* Raise the clock input to the EEPROM (by setting the SK bit), and then * wait microseconds. */ *eecd = *eecd | E1000_EECD_SK; E1000_WRITE_REG(hw, EECD, *eecd); E1000_WRITE_FLUSH(hw); udelay(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 e1000_lower_ee_clk(struct e1000_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); udelay(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 e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t count) { struct e1000_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 == e1000_eeprom_microwire) { eecd &= ~E1000_EECD_DO; } else if (eeprom->type == e1000_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); udelay(eeprom->delay_usec); e1000_raise_ee_clk(hw, &eecd); e1000_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 e1000_shift_in_ee_bits(struct e1000_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; e1000_raise_ee_clk(hw, &eecd); eecd = E1000_READ_REG(hw, EECD); eecd &= ~(E1000_EECD_DI); if(eecd & E1000_EECD_DO) data |= 1; e1000_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 e1000_acquire_eeprom(struct e1000_hw *hw) { struct e1000_eeprom_info *eeprom = &hw->eeprom; uint32_t eecd, i=0; DEBUGFUNC("e1000_acquire_eeprom"); if(e1000_get_hw_eeprom_semaphore(hw)) return -E1000_ERR_EEPROM; eecd = E1000_READ_REG(hw, EECD); if (hw->mac_type != e1000_82573) { /* Request EEPROM Access */ if(hw->mac_type > e1000_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++; udelay(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"); e1000_put_hw_eeprom_semaphore(hw); return -E1000_ERR_EEPROM; } } } /* Setup EEPROM for Read/Write */ if (eeprom->type == e1000_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 == e1000_eeprom_spi) { /* Clear SK and CS */ eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); E1000_WRITE_REG(hw, EECD, eecd); udelay(1); } return E1000_SUCCESS; } /****************************************************************************** * Returns EEPROM to a "standby" state * * hw - Struct containing variables accessed by shared code *****************************************************************************/ static void e1000_standby_eeprom(struct e1000_hw *hw) { struct e1000_eeprom_info *eeprom = &hw->eeprom; uint32_t eecd; eecd = E1000_READ_REG(hw, EECD); if(eeprom->type == e1000_eeprom_microwire) { eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(eeprom->delay_usec); /* Clock high */ eecd |= E1000_EECD_SK; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(eeprom->delay_usec); /* Select EEPROM */ eecd |= E1000_EECD_CS; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(eeprom->delay_usec); /* Clock low */ eecd &= ~E1000_EECD_SK; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(eeprom->delay_usec); } else if(eeprom->type == e1000_eeprom_spi) { /* Toggle CS to flush commands */ eecd |= E1000_EECD_CS; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(eeprom->delay_usec); eecd &= ~E1000_EECD_CS; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(eeprom->delay_usec); } } /****************************************************************************** * Terminates a command by inverting the EEPROM's chip select pin * * hw - Struct containing variables accessed by shared code *****************************************************************************/ static void e1000_release_eeprom(struct e1000_hw *hw) { uint32_t eecd; DEBUGFUNC("e1000_release_eeprom"); eecd = E1000_READ_REG(hw, EECD); if (hw->eeprom.type == e1000_eeprom_spi) { eecd |= E1000_EECD_CS; /* Pull CS high */ eecd &= ~E1000_EECD_SK; /* Lower SCK */ E1000_WRITE_REG(hw, EECD, eecd); udelay(hw->eeprom.delay_usec); } else if(hw->eeprom.type == e1000_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); udelay(hw->eeprom.delay_usec); /* Falling edge of clock */ eecd &= ~E1000_EECD_SK; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(hw->eeprom.delay_usec); } /* Stop requesting EEPROM access */ if(hw->mac_type > e1000_82544) { eecd &= ~E1000_EECD_REQ; E1000_WRITE_REG(hw, EECD, eecd); } e1000_put_hw_eeprom_semaphore(hw); } /****************************************************************************** * Reads a 16 bit word from the EEPROM. * * hw - Struct containing variables accessed by shared code *****************************************************************************/ int32_t e1000_spi_eeprom_ready(struct e1000_hw *hw) { uint16_t retry_count = 0; uint8_t spi_stat_reg; DEBUGFUNC("e1000_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 { e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI, hw->eeprom.opcode_bits); spi_stat_reg = (uint8_t)e1000_shift_in_ee_bits(hw, 8); if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI)) break; udelay(5); retry_count += 5; e1000_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 e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset, uint16_t words, uint16_t *data) { struct e1000_eeprom_info *eeprom = &hw->eeprom; uint32_t i = 0; int32_t ret_val; DEBUGFUNC("e1000_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 ((e1000_is_onboard_nvm_eeprom(hw) == TRUE) || (hw->mac_type != e1000_82573)) { /* Prepare the EEPROM for reading */ if(e1000_acquire_eeprom(hw) != E1000_SUCCESS) return -E1000_ERR_EEPROM; } if(eeprom->use_eerd == TRUE) { ret_val = e1000_read_eeprom_eerd(hw, offset, words, data); if ((e1000_is_onboard_nvm_eeprom(hw) == TRUE) || (hw->mac_type != e1000_82573)) e1000_release_eeprom(hw); return ret_val; } if(eeprom->type == e1000_eeprom_spi) { uint16_t word_in; uint8_t read_opcode = EEPROM_READ_OPCODE_SPI; if(e1000_spi_eeprom_ready(hw)) { e1000_release_eeprom(hw); return -E1000_ERR_EEPROM; } e1000_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) */ e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits); e1000_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 = e1000_shift_in_ee_bits(hw, 16); data[i] = (word_in >> 8) | (word_in << 8); } } else if(eeprom->type == e1000_eeprom_microwire) { for (i = 0; i < words; i++) { /* Send the READ command (opcode + addr) */ e1000_shift_out_ee_bits(hw, EEPROM_READ_OPCODE_MICROWIRE, eeprom->opcode_bits); e1000_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] = e1000_shift_in_ee_bits(hw, 16); e1000_standby_eeprom(hw); } } /* End this read operation */ e1000_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 *****************************************************************************/ static int32_t e1000_read_eeprom_eerd(struct e1000_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 = e1000_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 *****************************************************************************/ static int32_t e1000_write_eeprom_eewr(struct e1000_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 = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE); if(error) { break; } E1000_WRITE_REG(hw, EEWR, register_value); error = e1000_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 *****************************************************************************/ static int32_t e1000_poll_eerd_eewr_done(struct e1000_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; } udelay(5); } return done; } /*************************************************************************** * Description: Determines if the onboard NVM is FLASH or EEPROM. * * hw - Struct containing variables accessed by shared code ****************************************************************************/ static boolean_t e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw) { uint32_t eecd = 0; if(hw->mac_type == e1000_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 e1000_validate_eeprom_checksum(struct e1000_hw *hw) { uint16_t checksum = 0; uint16_t i, eeprom_data; DEBUGFUNC("e1000_validate_eeprom_checksum"); if ((hw->mac_type == e1000_82573) && (e1000_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. */ e1000_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. */ e1000_read_eeprom(hw, 0x23, 1, &eeprom_data); if ((eeprom_data & 0x8000) == 0) { eeprom_data |= 0x8000; e1000_write_eeprom(hw, 0x23, 1, &eeprom_data); e1000_update_eeprom_checksum(hw); } } } for(i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) { if(e1000_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 e1000_update_eeprom_checksum(struct e1000_hw *hw) { uint16_t checksum = 0; uint16_t i, eeprom_data; DEBUGFUNC("e1000_update_eeprom_checksum"); for(i = 0; i < EEPROM_CHECKSUM_REG; i++) { if(e1000_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(e1000_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) { DEBUGOUT("EEPROM Write Error\n"); return -E1000_ERR_EEPROM; } else if (hw->eeprom.type == e1000_eeprom_flash) { e1000_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 e1000_update_eeprom_checksum is not called after this function, the * EEPROM will most likely contain an invalid checksum. *****************************************************************************/ int32_t e1000_write_eeprom(struct e1000_hw *hw, uint16_t offset, uint16_t words, uint16_t *data) { struct e1000_eeprom_info *eeprom = &hw->eeprom; int32_t status = 0; DEBUGFUNC("e1000_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 writes only through eewr */ if(eeprom->use_eewr == TRUE) return e1000_write_eeprom_eewr(hw, offset, words, data); /* Prepare the EEPROM for writing */ if (e1000_acquire_eeprom(hw) != E1000_SUCCESS) return -E1000_ERR_EEPROM; if(eeprom->type == e1000_eeprom_microwire) { status = e1000_write_eeprom_microwire(hw, offset, words, data); } else { status = e1000_write_eeprom_spi(hw, offset, words, data); msec_delay(10); } /* Done with writing */ e1000_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 e1000_write_eeprom_spi(struct e1000_hw *hw, uint16_t offset, uint16_t words, uint16_t *data) { struct e1000_eeprom_info *eeprom = &hw->eeprom; uint16_t widx = 0; DEBUGFUNC("e1000_write_eeprom_spi"); while (widx < words) { uint8_t write_opcode = EEPROM_WRITE_OPCODE_SPI; if(e1000_spi_eeprom_ready(hw)) return -E1000_ERR_EEPROM; e1000_standby_eeprom(hw); /* Send the WRITE ENABLE command (8 bit opcode ) */ e1000_shift_out_ee_bits(hw, EEPROM_WREN_OPCODE_SPI, eeprom->opcode_bits); e1000_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) */ e1000_shift_out_ee_bits(hw, write_opcode, eeprom->opcode_bits); e1000_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); e1000_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) { e1000_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 e1000_write_eeprom_microwire(struct e1000_hw *hw, uint16_t offset, uint16_t words, uint16_t *data) { struct e1000_eeprom_info *eeprom = &hw->eeprom; uint32_t eecd; uint16_t words_written = 0; uint16_t i = 0; DEBUGFUNC("e1000_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. */ e1000_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE_MICROWIRE, (uint16_t)(eeprom->opcode_bits + 2)); e1000_shift_out_ee_bits(hw, 0, (uint16_t)(eeprom->address_bits - 2)); /* Prepare the EEPROM */ e1000_standby_eeprom(hw); while (words_written < words) { /* Send the Write command (3-bit opcode + addr) */ e1000_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE_MICROWIRE, eeprom->opcode_bits); e1000_shift_out_ee_bits(hw, (uint16_t)(offset + words_written), eeprom->address_bits); /* Send the data */ e1000_shift_out_ee_bits(hw, data[words_written], 16); /* Toggle the CS line. This in effect tells the EEPROM to execute * the previous command. */ e1000_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; udelay(50); } if(i == 200) { DEBUGOUT("EEPROM Write did not complete\n"); return -E1000_ERR_EEPROM; } /* Recover from write */ e1000_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. */ e1000_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE_MICROWIRE, (uint16_t)(eeprom->opcode_bits + 2)); e1000_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 *****************************************************************************/ static int32_t e1000_commit_shadow_ram(struct e1000_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 == e1000_82573) { for (i=0; i < attempts; i++) { eecd = E1000_READ_REG(hw, EECD); if ((eecd & E1000_EECD_FLUPD) == 0) { break; } udelay(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; } udelay(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 e1000_read_part_num(struct e1000_hw *hw, uint32_t *part_num) { uint16_t offset = EEPROM_PBA_BYTE_1; uint16_t eeprom_data; DEBUGFUNC("e1000_read_part_num"); /* Get word 0 from EEPROM */ if(e1000_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(e1000_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 e1000_read_mac_addr(struct e1000_hw * hw) { uint16_t offset; uint16_t eeprom_data, i; DEBUGFUNC("e1000_read_mac_addr"); for(i = 0; i < NODE_ADDRESS_SIZE; i += 2) { offset = i >> 1; if(e1000_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); } switch (hw->mac_type) { default: break; case e1000_82546: case e1000_82546_rev_3: case e1000_82571: if(E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1) hw->perm_mac_addr[5] ^= 0x01; break; } 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. *****************************************************************************/ static void e1000_init_rx_addrs(struct e1000_hw *hw) { uint32_t i; uint32_t rar_num; DEBUGFUNC("e1000_init_rx_addrs"); /* Setup the receive address. */ DEBUGOUT("Programming MAC Address into RAR[0]\n"); e1000_rar_set(hw, hw->mac_addr, 0); rar_num = E1000_RAR_ENTRIES; /* Reserve a spot for the Locally Administered Address to work around * an 82571 issue in which a reset on one port will reload the MAC on * the other port. */ if ((hw->mac_type == e1000_82571) && (hw->laa_is_present == TRUE)) rar_num -= 1; /* 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); } } #if 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 e1000_mc_addr_list_update(struct e1000_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("e1000_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; /* Reserve a spot for the Locally Administered Address to work around * an 82571 issue in which a reset on one port will reload the MAC on * the other port. */ if ((hw->mac_type == e1000_82571) && (hw->laa_is_present == TRUE)) num_rar_entry -= 1; 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 = e1000_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) { e1000_rar_set(hw, mc_addr_list + (i * (ETH_LENGTH_OF_ADDRESS + pad)), rar_used_count); rar_used_count++; } else { e1000_mta_set(hw, hash_value); } } DEBUGOUT("MC Update Complete\n"); } #endif /* 0 */ /****************************************************************************** * 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 e1000_hash_mc_addr(struct e1000_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 e1000_mta_set(struct e1000_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 == e1000_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 e1000_rar_set(struct e1000_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 e1000_write_vfta(struct e1000_hw *hw, uint32_t offset, uint32_t value) { uint32_t temp; if((hw->mac_type == e1000_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 *****************************************************************************/ static void e1000_clear_vfta(struct e1000_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 == e1000_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); } } static int32_t e1000_id_led_init(struct e1000_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("e1000_id_led_init"); if(hw->mac_type < e1000_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(e1000_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 e1000_setup_led(struct e1000_hw *hw) { uint32_t ledctl; int32_t ret_val = E1000_SUCCESS; DEBUGFUNC("e1000_setup_led"); switch(hw->mac_type) { case e1000_82542_rev2_0: case e1000_82542_rev2_1: case e1000_82543: case e1000_82544: /* No setup necessary */ break; case e1000_82541: case e1000_82547: case e1000_82541_rev_2: case e1000_82547_rev_2: /* Turn off PHY Smart Power Down (if enabled) */ ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &hw->phy_spd_default); if(ret_val) return ret_val; ret_val = e1000_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 == e1000_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 == e1000_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 e1000_cleanup_led(struct e1000_hw *hw) { int32_t ret_val = E1000_SUCCESS; DEBUGFUNC("e1000_cleanup_led"); switch(hw->mac_type) { case e1000_82542_rev2_0: case e1000_82542_rev2_1: case e1000_82543: case e1000_82544: /* No cleanup necessary */ break; case e1000_82541: case e1000_82547: case e1000_82541_rev_2: case e1000_82547_rev_2: /* Turn on PHY Smart Power Down (if previously enabled) */ ret_val = e1000_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 e1000_led_on(struct e1000_hw *hw) { uint32_t ctrl = E1000_READ_REG(hw, CTRL); DEBUGFUNC("e1000_led_on"); switch(hw->mac_type) { case e1000_82542_rev2_0: case e1000_82542_rev2_1: case e1000_82543: /* Set SW Defineable Pin 0 to turn on the LED */ ctrl |= E1000_CTRL_SWDPIN0; ctrl |= E1000_CTRL_SWDPIO0; break; case e1000_82544: if(hw->media_type == e1000_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 == e1000_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 == e1000_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 e1000_led_off(struct e1000_hw *hw) { uint32_t ctrl = E1000_READ_REG(hw, CTRL); DEBUGFUNC("e1000_led_off"); switch(hw->mac_type) { case e1000_82542_rev2_0: case e1000_82542_rev2_1: case e1000_82543: /* Clear SW Defineable Pin 0 to turn off the LED */ ctrl &= ~E1000_CTRL_SWDPIN0; ctrl |= E1000_CTRL_SWDPIO0; break; case e1000_82544: if(hw->media_type == e1000_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 == e1000_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 == e1000_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 *****************************************************************************/ static void e1000_clear_hw_cntrs(struct e1000_hw *hw) { volatile uint32_t temp; temp = E1000_READ_REG(hw, CRCERRS); temp = E1000_READ_REG(hw, SYMERRS); temp = E1000_READ_REG(hw, MPC); temp = E1000_READ_REG(hw, SCC); temp = E1000_READ_REG(hw, ECOL); temp = E1000_READ_REG(hw, MCC); temp = E1000_READ_REG(hw, LATECOL); temp = E1000_READ_REG(hw, COLC); temp = E1000_READ_REG(hw, DC); temp = E1000_READ_REG(hw, SEC); temp = E1000_READ_REG(hw, RLEC); temp = E1000_READ_REG(hw, XONRXC); temp = E1000_READ_REG(hw, XONTXC); temp = E1000_READ_REG(hw, XOFFRXC); temp = E1000_READ_REG(hw, XOFFTXC); temp = E1000_READ_REG(hw, FCRUC); temp = E1000_READ_REG(hw, PRC64); temp = E1000_READ_REG(hw, PRC127); temp = E1000_READ_REG(hw, PRC255); temp = E1000_READ_REG(hw, PRC511); temp = E1000_READ_REG(hw, PRC1023); temp = E1000_READ_REG(hw, PRC1522); temp = E1000_READ_REG(hw, GPRC); temp = E1000_READ_REG(hw, BPRC); temp = E1000_READ_REG(hw, MPRC); temp = E1000_READ_REG(hw, GPTC); temp = E1000_READ_REG(hw, GORCL); temp = E1000_READ_REG(hw, GORCH); temp = E1000_READ_REG(hw, GOTCL); temp = E1000_READ_REG(hw, GOTCH); temp = E1000_READ_REG(hw, RNBC); temp = E1000_READ_REG(hw, RUC); temp = E1000_READ_REG(hw, RFC); temp = E1000_READ_REG(hw, ROC); temp = E1000_READ_REG(hw, RJC); temp = E1000_READ_REG(hw, TORL); temp = E1000_READ_REG(hw, TORH); temp = E1000_READ_REG(hw, TOTL); temp = E1000_READ_REG(hw, TOTH); temp = E1000_READ_REG(hw, TPR); temp = E1000_READ_REG(hw, TPT); temp = E1000_READ_REG(hw, PTC64); temp = E1000_READ_REG(hw, PTC127); temp = E1000_READ_REG(hw, PTC255); temp = E1000_READ_REG(hw, PTC511); temp = E1000_READ_REG(hw, PTC1023); temp = E1000_READ_REG(hw, PTC1522); temp = E1000_READ_REG(hw, MPTC); temp = E1000_READ_REG(hw, BPTC); if(hw->mac_type < e1000_82543) return; temp = E1000_READ_REG(hw, ALGNERRC); temp = E1000_READ_REG(hw, RXERRC); temp = E1000_READ_REG(hw, TNCRS); temp = E1000_READ_REG(hw, CEXTERR); temp = E1000_READ_REG(hw, TSCTC); temp = E1000_READ_REG(hw, TSCTFC); if(hw->mac_type <= e1000_82544) return; temp = E1000_READ_REG(hw, MGTPRC); temp = E1000_READ_REG(hw, MGTPDC); temp = E1000_READ_REG(hw, MGTPTC); if(hw->mac_type <= e1000_82547_rev_2) return; temp = E1000_READ_REG(hw, IAC); temp = E1000_READ_REG(hw, ICRXOC); temp = E1000_READ_REG(hw, ICRXPTC); temp = E1000_READ_REG(hw, ICRXATC); temp = E1000_READ_REG(hw, ICTXPTC); temp = E1000_READ_REG(hw, ICTXATC); temp = E1000_READ_REG(hw, ICTXQEC); temp = E1000_READ_REG(hw, ICTXQMTC); temp = E1000_READ_REG(hw, ICRXDMTC); } /****************************************************************************** * Resets Adaptive IFS to its default state. * * hw - Struct containing variables accessed by shared code * * Call this after e1000_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 e1000_reset_adaptive(struct e1000_hw *hw) { DEBUGFUNC("e1000_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 e1000_update_adaptive(struct e1000_hw *hw) { DEBUGFUNC("e1000_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 e1000_tbi_adjust_stats(struct e1000_hw *hw, struct e1000_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 e1000_get_bus_info(struct e1000_hw *hw) { uint32_t status; switch (hw->mac_type) { case e1000_82542_rev2_0: case e1000_82542_rev2_1: hw->bus_type = e1000_bus_type_unknown; hw->bus_speed = e1000_bus_speed_unknown; hw->bus_width = e1000_bus_width_unknown; break; case e1000_82571: case e1000_82572: case e1000_82573: hw->bus_type = e1000_bus_type_pci_express; hw->bus_speed = e1000_bus_speed_2500; hw->bus_width = e1000_bus_width_pciex_4; break; default: status = E1000_READ_REG(hw, STATUS); hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ? e1000_bus_type_pcix : e1000_bus_type_pci; if(hw->device_id == E1000_DEV_ID_82546EB_QUAD_COPPER) { hw->bus_speed = (hw->bus_type == e1000_bus_type_pci) ? e1000_bus_speed_66 : e1000_bus_speed_120; } else if(hw->bus_type == e1000_bus_type_pci) { hw->bus_speed = (status & E1000_STATUS_PCI66) ? e1000_bus_speed_66 : e1000_bus_speed_33; } else { switch (status & E1000_STATUS_PCIX_SPEED) { case E1000_STATUS_PCIX_SPEED_66: hw->bus_speed = e1000_bus_speed_66; break; case E1000_STATUS_PCIX_SPEED_100: hw->bus_speed = e1000_bus_speed_100; break; case E1000_STATUS_PCIX_SPEED_133: hw->bus_speed = e1000_bus_speed_133; break; default: hw->bus_speed = e1000_bus_speed_reserved; break; } } hw->bus_width = (status & E1000_STATUS_BUS64) ? e1000_bus_width_64 : e1000_bus_width_32; break; } } #if 0 /****************************************************************************** * 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 e1000_read_reg_io(struct e1000_hw *hw, uint32_t offset) { unsigned long io_addr = hw->io_base; unsigned long io_data = hw->io_base + 4; e1000_io_write(hw, io_addr, offset); return e1000_io_read(hw, io_data); } #endif /* 0 */ /****************************************************************************** * 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 *****************************************************************************/ static void e1000_write_reg_io(struct e1000_hw *hw, uint32_t offset, uint32_t value) { unsigned long io_addr = hw->io_base; unsigned long io_data = hw->io_base + 4; e1000_io_write(hw, io_addr, offset); e1000_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. *****************************************************************************/ static int32_t e1000_get_cable_length(struct e1000_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 max_agc = 0; uint16_t i, phy_data; uint16_t cable_length; DEBUGFUNC("e1000_get_cable_length"); *min_length = *max_length = 0; /* Use old method for Phy older than IGP */ if(hw->phy_type == e1000_phy_m88) { ret_val = e1000_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 e1000_cable_length_50: *min_length = 0; *max_length = e1000_igp_cable_length_50; break; case e1000_cable_length_50_80: *min_length = e1000_igp_cable_length_50; *max_length = e1000_igp_cable_length_80; break; case e1000_cable_length_80_110: *min_length = e1000_igp_cable_length_80; *max_length = e1000_igp_cable_length_110; break; case e1000_cable_length_110_140: *min_length = e1000_igp_cable_length_110; *max_length = e1000_igp_cable_length_140; break; case e1000_cable_length_140: *min_length = e1000_igp_cable_length_140; *max_length = e1000_igp_cable_length_170; break; default: return -E1000_ERR_PHY; break; } } else if(hw->phy_type == e1000_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 = e1000_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 * e1000_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 = ((e1000_igp_cable_length_table[agc_value] - IGP01E1000_AGC_RANGE) > 0) ? (e1000_igp_cable_length_table[agc_value] - IGP01E1000_AGC_RANGE) : 0; *max_length = e1000_igp_cable_length_table[agc_value] + IGP01E1000_AGC_RANGE; } else if (hw->phy_type == e1000_phy_igp_2) { uint16_t agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] = {IGP02E1000_PHY_AGC_A, IGP02E1000_PHY_AGC_B, IGP02E1000_PHY_AGC_C, IGP02E1000_PHY_AGC_D}; /* Read the AGC registers for all channels */ for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) { ret_val = e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data); if (ret_val) return ret_val; /* Getting bits 15:9, which represent the combination of course and * fine gain values. The result is a number that can be put into * the lookup table to obtain the approximate cable length. */ cur_agc = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) & IGP02E1000_AGC_LENGTH_MASK; /* Remove min & max AGC values from calculation. */ if (e1000_igp_2_cable_length_table[min_agc] > e1000_igp_2_cable_length_table[cur_agc]) min_agc = cur_agc; if (e1000_igp_2_cable_length_table[max_agc] < e1000_igp_2_cable_length_table[cur_agc]) max_agc = cur_agc; agc_value += e1000_igp_2_cable_length_table[cur_agc]; } agc_value -= (e1000_igp_2_cable_length_table[min_agc] + e1000_igp_2_cable_length_table[max_agc]); agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2); /* Calculate cable length with the error range of +/- 10 meters. */ *min_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ? (agc_value - IGP02E1000_AGC_RANGE) : 0; *max_length = agc_value + IGP02E1000_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. *****************************************************************************/ static int32_t e1000_check_polarity(struct e1000_hw *hw, uint16_t *polarity) { int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_check_polarity"); if(hw->phy_type == e1000_phy_m88) { /* return the Polarity bit in the Status register. */ ret_val = e1000_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 == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2) { /* Read the Status register to check the speed */ ret_val = e1000_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 = e1000_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. *****************************************************************************/ static int32_t e1000_check_downshift(struct e1000_hw *hw) { int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_check_downshift"); if(hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2) { ret_val = e1000_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 == e1000_phy_m88) { ret_val = e1000_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. * ****************************************************************************/ static int32_t e1000_config_dsp_after_link_change(struct e1000_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("e1000_config_dsp_after_link_change"); if(hw->phy_type != e1000_phy_igp) return E1000_SUCCESS; if(link_up) { ret_val = e1000_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) { e1000_get_cable_length(hw, &min_length, &max_length); if((hw->dsp_config_state == e1000_dsp_config_enabled) && min_length >= e1000_igp_cable_length_50) { for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { ret_val = e1000_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 = e1000_write_phy_reg(hw, dsp_reg_array[i], phy_data); if(ret_val) return ret_val; } hw->dsp_config_state = e1000_dsp_config_activated; } if((hw->ffe_config_state == e1000_ffe_config_enabled) && (min_length < e1000_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 = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data); if(ret_val) return ret_val; for(i = 0; i < ffe_idle_err_timeout; i++) { udelay(1000); ret_val = e1000_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 = e1000_ffe_config_active; ret_val = e1000_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 == e1000_dsp_config_activated) { /* Save off the current value of register 0x2F5B to be restored at * the end of the routines. */ ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); if(ret_val) return ret_val; /* Disable the PHY transmitter */ ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003); if(ret_val) return ret_val; msec_delay_irq(20); ret_val = e1000_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 = e1000_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 = e1000_write_phy_reg(hw,dsp_reg_array[i], phy_data); if(ret_val) return ret_val; } ret_val = e1000_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 = e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); if(ret_val) return ret_val; hw->dsp_config_state = e1000_dsp_config_enabled; } if(hw->ffe_config_state == e1000_ffe_config_active) { /* Save off the current value of register 0x2F5B to be restored at * the end of the routines. */ ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); if(ret_val) return ret_val; /* Disable the PHY transmitter */ ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003); if(ret_val) return ret_val; msec_delay_irq(20); ret_val = e1000_write_phy_reg(hw, 0x0000, IGP01E1000_IEEE_FORCE_GIGA); if(ret_val) return ret_val; ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_DSP_FFE, IGP01E1000_PHY_DSP_FFE_DEFAULT); if(ret_val) return ret_val; ret_val = e1000_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 = e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); if(ret_val) return ret_val; hw->ffe_config_state = e1000_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 e1000_set_phy_mode(struct e1000_hw *hw) { int32_t ret_val; uint16_t eeprom_data; DEBUGFUNC("e1000_set_phy_mode"); if((hw->mac_type == e1000_82545_rev_3) && (hw->media_type == e1000_media_type_copper)) { ret_val = e1000_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 = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x000B); if(ret_val) return ret_val; ret_val = e1000_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. * ****************************************************************************/ static int32_t e1000_set_d3_lplu_state(struct e1000_hw *hw, boolean_t active) { int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_set_d3_lplu_state"); if(hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_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 == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2) { ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &phy_data); if(ret_val) return ret_val; } else { ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); if(ret_val) return ret_val; } if(!active) { if(hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2) { phy_data &= ~IGP01E1000_GMII_FLEX_SPD; ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, phy_data); if(ret_val) return ret_val; } else { phy_data &= ~IGP02E1000_PM_D3_LPLU; ret_val = e1000_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 == e1000_smart_speed_on) { ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); if(ret_val) return ret_val; phy_data |= IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data); if(ret_val) return ret_val; } else if (hw->smart_speed == e1000_smart_speed_off) { ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); if (ret_val) return ret_val; phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1000_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 == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2) { phy_data |= IGP01E1000_GMII_FLEX_SPD; ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, phy_data); if(ret_val) return ret_val; } else { phy_data |= IGP02E1000_PM_D3_LPLU; ret_val = e1000_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 = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); if(ret_val) return ret_val; phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1000_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. * ****************************************************************************/ static int32_t e1000_set_d0_lplu_state(struct e1000_hw *hw, boolean_t active) { int32_t ret_val; uint16_t phy_data; DEBUGFUNC("e1000_set_d0_lplu_state"); if(hw->mac_type <= e1000_82547_rev_2) return E1000_SUCCESS; ret_val = e1000_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 = e1000_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 == e1000_smart_speed_on) { ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); if(ret_val) return ret_val; phy_data |= IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data); if(ret_val) return ret_val; } else if (hw->smart_speed == e1000_smart_speed_off) { ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); if (ret_val) return ret_val; phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1000_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 = e1000_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 = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data); if(ret_val) return ret_val; phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; ret_val = e1000_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 e1000_set_vco_speed(struct e1000_hw *hw) { int32_t ret_val; uint16_t default_page = 0; uint16_t phy_data; DEBUGFUNC("e1000_set_vco_speed"); switch(hw->mac_type) { case e1000_82545_rev_3: case e1000_82546_rev_3: break; default: return E1000_SUCCESS; } /* Set PHY register 30, page 5, bit 8 to 0 */ ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, &default_page); if(ret_val) return ret_val; ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0005); if(ret_val) return ret_val; ret_val = e1000_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 = e1000_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 = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0004); if(ret_val) return ret_val; ret_val = e1000_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 = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data); if(ret_val) return ret_val; ret_val = e1000_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 e1000_host_if_read_cookie(struct e1000_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. ****************************************************************************/ static int32_t e1000_mng_enable_host_if(struct e1000_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. ****************************************************************************/ static int32_t e1000_mng_host_if_write(struct e1000_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. ****************************************************************************/ static int32_t e1000_mng_write_cmd_header(struct e1000_hw * hw, struct e1000_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 e1000_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. ****************************************************************************/ static int32_t e1000_mng_write_commit( struct e1000_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 e1000_check_mng_mode( struct e1000_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 e1000_mng_write_dhcp_info(struct e1000_hw * hw, uint8_t *buffer, uint16_t length) { int32_t ret_val; struct e1000_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 = e1000_mng_enable_host_if(hw); if (ret_val == E1000_SUCCESS) { ret_val = e1000_mng_host_if_write(hw, buffer, length, sizeof(hdr), &(hdr.checksum)); if (ret_val == E1000_SUCCESS) { ret_val = e1000_mng_write_cmd_header(hw, &hdr); if (ret_val == E1000_SUCCESS) ret_val = e1000_mng_write_commit(hw); } } return ret_val; } /***************************************************************************** * This function calculates the checksum. * * returns - checksum of buffer contents. ****************************************************************************/ uint8_t e1000_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 e1000_enable_tx_pkt_filtering(struct e1000_hw *hw) { /* called in init as well as watchdog timer functions */ int32_t ret_val, checksum; boolean_t tx_filter = FALSE; struct e1000_host_mng_dhcp_cookie *hdr = &(hw->mng_cookie); uint8_t *buffer = (uint8_t *) &(hw->mng_cookie); if (e1000_check_mng_mode(hw)) { ret_val = e1000_mng_enable_host_if(hw); if (ret_val == E1000_SUCCESS) { ret_val = e1000_host_if_read_cookie(hw, buffer); if (ret_val == E1000_SUCCESS) { checksum = hdr->checksum; hdr->checksum = 0; if ((hdr->signature == E1000_IAMT_SIGNATURE) && checksum == e1000_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 e1000_enable_mng_pass_thru(struct e1000_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 (e1000_arc_subsystem_valid(hw) == TRUE) { fwsm = E1000_READ_REG(hw, FWSM); factps = E1000_READ_REG(hw, FACTPS); if (((fwsm & E1000_FWSM_MODE_MASK) == (e1000_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 e1000_polarity_reversal_workaround(struct e1000_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 = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019); if(ret_val) return ret_val; ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFFF); if(ret_val) return ret_val; ret_val = e1000_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 = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); if(ret_val) return ret_val; ret_val = e1000_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 = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019); if(ret_val) return ret_val; msec_delay_irq(50); ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFF0); if(ret_val) return ret_val; msec_delay_irq(50); ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFF00); if(ret_val) return ret_val; msec_delay_irq(50); ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x0000); if(ret_val) return ret_val; ret_val = e1000_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 = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); if(ret_val) return ret_val; ret_val = e1000_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. * ***************************************************************************/ static void e1000_set_pci_express_master_disable(struct e1000_hw *hw) { uint32_t ctrl; DEBUGFUNC("e1000_set_pci_express_master_disable"); if (hw->bus_type != e1000_bus_type_pci_express) return; ctrl = E1000_READ_REG(hw, CTRL); ctrl |= E1000_CTRL_GIO_MASTER_DISABLE; E1000_WRITE_REG(hw, CTRL, ctrl); } #if 0 /*************************************************************************** * * Enables PCI-Express master access. * * hw: Struct containing variables accessed by shared code * * returns: - none. * ***************************************************************************/ void e1000_enable_pciex_master(struct e1000_hw *hw) { uint32_t ctrl; DEBUGFUNC("e1000_enable_pciex_master"); if (hw->bus_type != e1000_bus_type_pci_express) return; ctrl = E1000_READ_REG(hw, CTRL); ctrl &= ~E1000_CTRL_GIO_MASTER_DISABLE; E1000_WRITE_REG(hw, CTRL, ctrl); } #endif /* 0 */ /******************************************************************************* * * 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 e1000_disable_pciex_master(struct e1000_hw *hw) { int32_t timeout = MASTER_DISABLE_TIMEOUT; /* 80ms */ DEBUGFUNC("e1000_disable_pciex_master"); if (hw->bus_type != e1000_bus_type_pci_express) return E1000_SUCCESS; e1000_set_pci_express_master_disable(hw); while(timeout) { if(!(E1000_READ_REG(hw, STATUS) & E1000_STATUS_GIO_MASTER_ENABLE)) break; else udelay(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. * ******************************************************************************/ static int32_t e1000_get_auto_rd_done(struct e1000_hw *hw) { int32_t timeout = AUTO_READ_DONE_TIMEOUT; DEBUGFUNC("e1000_get_auto_rd_done"); switch (hw->mac_type) { default: msec_delay(5); break; case e1000_82571: case e1000_82572: case e1000_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. * ***************************************************************************/ static int32_t e1000_get_phy_cfg_done(struct e1000_hw *hw) { int32_t timeout = PHY_CFG_TIMEOUT; uint32_t cfg_mask = E1000_EEPROM_CFG_DONE; DEBUGFUNC("e1000_get_phy_cfg_done"); switch (hw->mac_type) { default: msec_delay(10); break; case e1000_82571: case e1000_82572: while (timeout) { if (E1000_READ_REG(hw, EEMNGCTL) & cfg_mask) break; else msec_delay(1); timeout--; } if (!timeout) { DEBUGOUT("MNG configuration cycle has not completed.\n"); return -E1000_ERR_RESET; } break; } 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. * ***************************************************************************/ static int32_t e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw) { int32_t timeout; uint32_t swsm; DEBUGFUNC("e1000_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; udelay(50); timeout--; } if(!timeout) { /* Release semaphores */ e1000_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. * ***************************************************************************/ static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw) { uint32_t swsm; DEBUGFUNC("e1000_put_hw_eeprom_semaphore"); if(!hw->eeprom_semaphore_present) return; swsm = E1000_READ_REG(hw, SWSM); swsm &= ~(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 e1000_check_phy_reset_block(struct e1000_hw *hw) { uint32_t manc = 0; if(hw->mac_type > e1000_82547_rev_2) manc = E1000_READ_REG(hw, MANC); return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ? E1000_BLK_PHY_RESET : E1000_SUCCESS; } static uint8_t e1000_arc_subsystem_valid(struct e1000_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 e1000_82571: case e1000_82572: case e1000_82573: fwsm = E1000_READ_REG(hw, FWSM); if((fwsm & E1000_FWSM_MODE_MASK) != 0) return TRUE; break; default: break; } return FALSE; }