text: /******************************************************************************
    SPDX-License-Identifier: BSD-3-Clause
  
    Copyright (c) 2001-2015, Intel Corporation
    All rights reserved.
  
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
  
     1. Redistributions of source code must retain the above copyright notice,
        this list of conditions and the following disclaimer.
  
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        notice, this list of conditions and the following disclaimer in the
        documentation and/or other materials provided with the distribution.
  
     3. Neither the name of the Intel Corporation nor the names of its
        contributors may be used to endorse or promote products derived from
        this software without specific prior written permission.
  
    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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  ******************************************************************************/
  /*$FreeBSD$*/
  
  #include "e1000_api.h"
  
  /*
   * NOTE: the following routines using the e1000
   *  naming style are provided to the shared
   *  code but are OS specific
   */
  
  void e1000_write_pci_cfg(struct e1000_hw* hw, u32 reg, u16* value) {
      pci_config_write16(hw2pci(hw), reg, *value);
  }
  
  void e1000_read_pci_cfg(struct e1000_hw* hw, u32 reg, u16* value) {
      pci_config_read16(hw2pci(hw), reg, value);
  }
  
  void e1000_pci_set_mwi(struct e1000_hw* hw) {
      pci_config_write16(hw2pci(hw), PCI_CONFIG_COMMAND, (hw->bus.pci_cmd_word | CMD_MEM_WRT_INVALIDATE));
  }
  
  void e1000_pci_clear_mwi(struct e1000_hw* hw) {
      pci_config_write16(hw2pci(hw), PCI_CONFIG_COMMAND, (hw->bus.pci_cmd_word & ~CMD_MEM_WRT_INVALIDATE));
  }
  
  /*
   * Read the PCI Express capabilities
   */
  int32_t e1000_read_pcie_cap_reg(struct e1000_hw* hw, u32 reg, u16* value) {
      pci_protocol_t* pci = hw2pci(hw);
      uint8_t offset = pci_get_first_capability(pci, PCI_CAP_ID_PCI_EXPRESS);
  
      pci_config_read16(pci, offset + reg, value);
      return E1000_SUCCESS;
  }
  
  /*
   * Write the PCI Express capabilities
   */
  int32_t e1000_write_pcie_cap_reg(struct e1000_hw* hw, u32 reg, u16* value) {
      pci_protocol_t* pci = hw2pci(hw);
      uint8_t offset = pci_get_first_capability(pci, PCI_CAP_ID_PCI_EXPRESS);
  
      pci_config_write16(pci, offset + reg, *value);
      return E1000_SUCCESS;
  }
  