FreeBSD/Linux Kernel Cross Reference
sys/dev/em/e1000_82542.c

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    /* $FreeBSD$ */
    
    
    /* e1000_82542 (rev 1 & 2)
     */
    
    #include "e1000_api.h"
    
    void e1000_init_function_pointers_82542(struct e1000_hw *hw);
    
    STATIC s32  e1000_init_phy_params_82542(struct e1000_hw *hw);
    STATIC s32  e1000_init_nvm_params_82542(struct e1000_hw *hw);
    STATIC s32  e1000_init_mac_params_82542(struct e1000_hw *hw);
    STATIC s32  e1000_get_bus_info_82542(struct e1000_hw *hw);
    STATIC s32  e1000_reset_hw_82542(struct e1000_hw *hw);
    STATIC s32  e1000_init_hw_82542(struct e1000_hw *hw);
    STATIC s32  e1000_setup_link_82542(struct e1000_hw *hw);
    STATIC s32  e1000_led_on_82542(struct e1000_hw *hw);
    STATIC s32  e1000_led_off_82542(struct e1000_hw *hw);
    STATIC void e1000_clear_hw_cntrs_82542(struct e1000_hw *hw);
    
    struct e1000_dev_spec_82542 {
            bool dma_fairness;
    };
    
    /**
     *  e1000_init_phy_params_82542 - Init PHY func ptrs.
     *  @hw: pointer to the HW structure
     *
     *  This is a function pointer entry point called by the api module.
     **/
    STATIC s32 e1000_init_phy_params_82542(struct e1000_hw *hw)
    {
            struct e1000_phy_info *phy = &hw->phy;
            s32 ret_val = E1000_SUCCESS;
    
            DEBUGFUNC("e1000_init_phy_params_82542");
    
            phy->type               = e1000_phy_none;
    
            return ret_val;
    }
    
    /**
     *  e1000_init_nvm_params_82542 - Init NVM func ptrs.
     *  @hw: pointer to the HW structure
     *
     *  This is a function pointer entry point called by the api module.
     **/
    STATIC s32 e1000_init_nvm_params_82542(struct e1000_hw *hw)
    {
            struct e1000_nvm_info *nvm = &hw->nvm;
            struct e1000_functions *func = &hw->func;
    
            DEBUGFUNC("e1000_init_nvm_params_82542");
    
            nvm->address_bits       =  6;
            nvm->delay_usec         = 50;
            nvm->opcode_bits        =  3;
            nvm->type               = e1000_nvm_eeprom_microwire;
            nvm->word_size          = 64;
    
            /* Function Pointers */
            func->read_nvm          = e1000_read_nvm_microwire;
            func->release_nvm       = e1000_stop_nvm;
            func->write_nvm         = e1000_write_nvm_microwire;
            func->update_nvm        = e1000_update_nvm_checksum_generic;
           func->validate_nvm      = e1000_validate_nvm_checksum_generic;
   
           return E1000_SUCCESS;
   }
   
   /**
    *  e1000_init_mac_params_82542 - Init MAC func ptrs.
    *  @hw: pointer to the HW structure
    *
    *  This is a function pointer entry point called by the api module.
    **/
   STATIC s32 e1000_init_mac_params_82542(struct e1000_hw *hw)
   {
           struct e1000_mac_info *mac = &hw->mac;
           struct e1000_functions *func = &hw->func;
           s32 ret_val = E1000_SUCCESS;
   
           DEBUGFUNC("e1000_init_mac_params_82542");
   
           /* Set media type */
           hw->phy.media_type = e1000_media_type_fiber;
   
           /* Set mta register count */
           mac->mta_reg_count = 128;
           /* Set rar entry count */
           mac->rar_entry_count = E1000_RAR_ENTRIES;
   
           /* Function pointers */
   
           /* bus type/speed/width */
           func->get_bus_info = e1000_get_bus_info_82542;
           /* reset */
           func->reset_hw = e1000_reset_hw_82542;
           /* hw initialization */
           func->init_hw = e1000_init_hw_82542;
           /* link setup */
           func->setup_link = e1000_setup_link_82542;
           /* phy/fiber/serdes setup */
           func->setup_physical_interface = e1000_setup_fiber_serdes_link_generic;
           /* check for link */
           func->check_for_link = e1000_check_for_fiber_link_generic;
           /* multicast address update */
           func->update_mc_addr_list = e1000_update_mc_addr_list_generic;
           /* writing VFTA */
           func->write_vfta = e1000_write_vfta_generic;
           /* clearing VFTA */
           func->clear_vfta = e1000_clear_vfta_generic;
           /* setting MTA */
           func->mta_set = e1000_mta_set_generic;
           /* turn on/off LED */
           func->led_on = e1000_led_on_82542;
           func->led_off = e1000_led_off_82542;
           /* remove device */
           func->remove_device = e1000_remove_device_generic;
           /* clear hardware counters */
           func->clear_hw_cntrs = e1000_clear_hw_cntrs_82542;
           /* link info */
           func->get_link_up_info = e1000_get_speed_and_duplex_fiber_serdes_generic;
   
           hw->dev_spec_size = sizeof(struct e1000_dev_spec_82542);
   
           /* Device-specific structure allocation */
           ret_val = e1000_alloc_zeroed_dev_spec_struct(hw, hw->dev_spec_size);
   
           return ret_val;
   }
   
   /**
    *  e1000_init_function_pointers_82542 - Init func ptrs.
    *  @hw: pointer to the HW structure
    *
    *  The only function explicitly called by the api module to initialize
    *  all function pointers and parameters.
    **/
   void e1000_init_function_pointers_82542(struct e1000_hw *hw)
   {
           DEBUGFUNC("e1000_init_function_pointers_82542");
   
           hw->func.init_mac_params = e1000_init_mac_params_82542;
           hw->func.init_nvm_params = e1000_init_nvm_params_82542;
           hw->func.init_phy_params = e1000_init_phy_params_82542;
   }
   
   /**
    *  e1000_get_bus_info_82542 - Obtain bus information for adapter
    *  @hw: pointer to the HW structure
    *
    *  This will obtain information about the HW bus for which the
    *  adaper is attached and stores it in the hw structure.  This is a function
    *  pointer entry point called by the api module.
    **/
   STATIC s32 e1000_get_bus_info_82542(struct e1000_hw *hw)
   {
           DEBUGFUNC("e1000_get_bus_info_82542");
   
           hw->bus.type = e1000_bus_type_pci;
           hw->bus.speed = e1000_bus_speed_unknown;
           hw->bus.width = e1000_bus_width_unknown;
   
           return E1000_SUCCESS;
   }
   
   /**
    *  e1000_reset_hw_82542 - Reset hardware
    *  @hw: pointer to the HW structure
    *
    *  This resets the hardware into a known state.  This is a
    *  function pointer entry point called by the api module.
    **/
   STATIC s32 e1000_reset_hw_82542(struct e1000_hw *hw)
   {
           struct e1000_bus_info *bus = &hw->bus;
           s32 ret_val = E1000_SUCCESS;
           u32 ctrl, icr;
   
           DEBUGFUNC("e1000_reset_hw_82542");
   
           if (hw->revision_id == E1000_REVISION_2) {
                   DEBUGOUT("Disabling MWI on 82542 rev 2\n");
                   e1000_pci_clear_mwi(hw);
           }
   
           DEBUGOUT("Masking off all interrupts\n");
           E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
   
           E1000_WRITE_REG(hw, E1000_RCTL, 0);
           E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
           E1000_WRITE_FLUSH(hw);
   
           /*
            * Delay to allow any outstanding PCI transactions to complete before
            * resetting the device
            */
           msec_delay(10);
   
           ctrl = E1000_READ_REG(hw, E1000_CTRL);
   
           DEBUGOUT("Issuing a global reset to 82542/82543 MAC\n");
           E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
   
           e1000_reload_nvm(hw);
           msec_delay(2);
   
           E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
           icr = E1000_READ_REG(hw, E1000_ICR);
   
           if (hw->revision_id == E1000_REVISION_2) {
                   if (bus->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
                           e1000_pci_set_mwi(hw);
           }
   
           return ret_val;
   }
   
   /**
    *  e1000_init_hw_82542 - Initialize hardware
    *  @hw: pointer to the HW structure
    *
    *  This inits the hardware readying it for operation.  This is a
    *  function pointer entry point called by the api module.
    **/
   STATIC s32 e1000_init_hw_82542(struct e1000_hw *hw)
   {
           struct e1000_mac_info *mac = &hw->mac;
           struct e1000_dev_spec_82542 *dev_spec;
           s32 ret_val = E1000_SUCCESS;
           u32 ctrl;
           u16 i;
   
           DEBUGFUNC("e1000_init_hw_82542");
   
           dev_spec = (struct e1000_dev_spec_82542 *)hw->dev_spec;
   
           /* Disabling VLAN filtering */
           E1000_WRITE_REG(hw, E1000_VET, 0);
           e1000_clear_vfta(hw);
   
           /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
           if (hw->revision_id == E1000_REVISION_2) {
                   DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
                   e1000_pci_clear_mwi(hw);
                   E1000_WRITE_REG(hw, E1000_RCTL, E1000_RCTL_RST);
                   E1000_WRITE_FLUSH(hw);
                   msec_delay(5);
           }
   
           /* Setup the receive address. */
           e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
   
           /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
           if (hw->revision_id == E1000_REVISION_2) {
                   E1000_WRITE_REG(hw, E1000_RCTL, 0);
                   E1000_WRITE_FLUSH(hw);
                   msec_delay(1);
                   if (hw->bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
                           e1000_pci_set_mwi(hw);
           }
   
           /* Zero out the Multicast HASH table */
           DEBUGOUT("Zeroing the MTA\n");
           for (i = 0; i < mac->mta_reg_count; i++)
                   E1000_WRITE_REG_ARRAY(hw, E1000_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.
            */
           if (dev_spec->dma_fairness) {
                   ctrl = E1000_READ_REG(hw, E1000_CTRL);
                   E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_PRIOR);
           }
   
           /* Setup link and flow control */
           ret_val = e1000_setup_link_82542(hw);
   
           /*
            * Clear all of the statistics registers (clear on read).  It is
            * important that we do this after we have tried to establish link
            * because the symbol error count will increment wildly if there
            * is no link.
            */
           e1000_clear_hw_cntrs_82542(hw);
   
           return ret_val;
   }
   
   /**
    *  e1000_setup_link_82542 - Setup flow control and link settings
    *  @hw: pointer to the HW structure
    *
    *  Determines which flow control settings to use, then configures flow
    *  control.  Calls the appropriate media-specific link configuration
    *  function.  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.  This is a function
    *  pointer entry point called by the api module.
    **/
   STATIC s32 e1000_setup_link_82542(struct e1000_hw *hw)
   {
           struct e1000_mac_info *mac = &hw->mac;
           struct e1000_functions *func = &hw->func;
           s32 ret_val = E1000_SUCCESS;
   
           DEBUGFUNC("e1000_setup_link_82542");
   
           ret_val = e1000_set_default_fc_generic(hw);
           if (ret_val)
                   goto out;
   
           hw->fc.type &= ~e1000_fc_tx_pause;
   
           if (mac->report_tx_early == 1)
                   hw->fc.type &= ~e1000_fc_rx_pause;
   
           /*
            * We want to save off the original Flow Control configuration just in
            * case we get disconnected and then reconnected into a different hub
            * or switch with different Flow Control capabilities.
            */
           hw->fc.original_type = hw->fc.type;
   
           DEBUGOUT1("After fix-ups FlowControl is now = %x\n", hw->fc.type);
   
           /* Call the necessary subroutine to configure the link. */
           ret_val = func->setup_physical_interface(hw);
           if (ret_val)
                   goto out;
   
           /*
            * 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 Flow Control address, type and timer regs\n");
   
           E1000_WRITE_REG(hw, E1000_FCAL, FLOW_CONTROL_ADDRESS_LOW);
           E1000_WRITE_REG(hw, E1000_FCAH, FLOW_CONTROL_ADDRESS_HIGH);
           E1000_WRITE_REG(hw, E1000_FCT, FLOW_CONTROL_TYPE);
   
           E1000_WRITE_REG(hw, E1000_FCTTV, hw->fc.pause_time);
   
           ret_val = e1000_set_fc_watermarks_generic(hw);
   
   out:
           return ret_val;
   }
   
   /**
    *  e1000_led_on_82542 - Turn on SW controllable LED
    *  @hw: pointer to the HW structure
    *
    *  Turns the SW defined LED on.  This is a function pointer entry point
    *  called by the api module.
    **/
   STATIC s32 e1000_led_on_82542(struct e1000_hw *hw)
   {
           u32 ctrl = E1000_READ_REG(hw, E1000_CTRL);
   
           DEBUGFUNC("e1000_led_on_82542");
   
           ctrl |= E1000_CTRL_SWDPIN0;
           ctrl |= E1000_CTRL_SWDPIO0;
           E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
   
           return E1000_SUCCESS;
   }
   
   /**
    *  e1000_led_off_82542 - Turn off SW controllable LED
    *  @hw: pointer to the HW structure
    *
    *  Turns the SW defined LED off.  This is a function pointer entry point
    *  called by the api module.
    **/
   STATIC s32 e1000_led_off_82542(struct e1000_hw *hw)
   {
           u32 ctrl = E1000_READ_REG(hw, E1000_CTRL);
   
           DEBUGFUNC("e1000_led_off_82542");
   
           ctrl &= ~E1000_CTRL_SWDPIN0;
           ctrl |= E1000_CTRL_SWDPIO0;
           E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
   
           return E1000_SUCCESS;
   }
   
   /**
    *  e1000_translate_register_82542 - Translate the proper regiser offset
    *  @reg: e1000 register to be read
    *
    *  Registers in 82542 are located in different offsets than other adapters
    *  even though they function in the same manner.  This function takes in
    *  the name of the register to read and returns the correct offset for
    *  82542 silicon.
    **/
   u32 e1000_translate_register_82542(u32 reg)
   {
           /*
            * Some of the 82542 registers are located at different
            * offsets than they are in newer adapters.
            * Despite the difference in location, the registers
            * function in the same manner.
            */
           switch (reg) {
           case E1000_RA:
                   reg = 0x00040;
                   break;
           case E1000_RDTR:
                   reg = 0x00108;
                   break;
           case E1000_RDBAL(0):
                   reg = 0x00110;
                   break;
           case E1000_RDBAH(0):
                   reg = 0x00114;
                   break;
           case E1000_RDLEN(0):
                   reg = 0x00118;
                   break;
           case E1000_RDH(0):
                   reg = 0x00120;
                   break;
           case E1000_RDT(0):
                   reg = 0x00128;
                   break;
           case E1000_RDBAL(1):
                   reg = 0x00138;
                   break;
           case E1000_RDBAH(1):
                   reg = 0x0013C;
                   break;
           case E1000_RDLEN(1):
                   reg = 0x00140;
                   break;
           case E1000_RDH(1):
                   reg = 0x00148;
                   break;
           case E1000_RDT(1):
                   reg = 0x00150;
                   break;
           case E1000_FCRTH:
                   reg = 0x00160;
                   break;
           case E1000_FCRTL:
                   reg = 0x00168;
                   break;
           case E1000_MTA:
                   reg = 0x00200;
                   break;
           case E1000_TDBAL(0):
                   reg = 0x00420;
                   break;
           case E1000_TDBAH(0):
                   reg = 0x00424;
                   break;
           case E1000_TDLEN(0):
                   reg = 0x00428;
                   break;
           case E1000_TDH(0):
                   reg = 0x00430;
                   break;
           case E1000_TDT(0):
                   reg = 0x00438;
                   break;
           case E1000_TIDV:
                   reg = 0x00440;
                   break;
           case E1000_VFTA:
                   reg = 0x00600;
                   break;
           case E1000_TDFH:
                   reg = 0x08010;
                   break;
           case E1000_TDFT:
                   reg = 0x08018;
                   break;
           default:
                   break;
           }
   
           return reg;
   }
   
   /**
    *  e1000_clear_hw_cntrs_82542 - Clear device specific hardware counters
    *  @hw: pointer to the HW structure
    *
    *  Clears the hardware counters by reading the counter registers.
    **/
   STATIC void e1000_clear_hw_cntrs_82542(struct e1000_hw *hw)
   {
           volatile u32 temp;
   
           DEBUGFUNC("e1000_clear_hw_cntrs_82542");
   
           e1000_clear_hw_cntrs_base_generic(hw);
   
           temp = E1000_READ_REG(hw, E1000_PRC64);
           temp = E1000_READ_REG(hw, E1000_PRC127);
           temp = E1000_READ_REG(hw, E1000_PRC255);
           temp = E1000_READ_REG(hw, E1000_PRC511);
           temp = E1000_READ_REG(hw, E1000_PRC1023);
           temp = E1000_READ_REG(hw, E1000_PRC1522);
           temp = E1000_READ_REG(hw, E1000_PTC64);
           temp = E1000_READ_REG(hw, E1000_PTC127);
           temp = E1000_READ_REG(hw, E1000_PTC255);
           temp = E1000_READ_REG(hw, E1000_PTC511);
           temp = E1000_READ_REG(hw, E1000_PTC1023);
           temp = E1000_READ_REG(hw, E1000_PTC1522);
   }

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