common/hw-pci-mmconf.ads

--
-- Copyright (C) 2017 Nico Huber <nico.h@gmx.de>
--
-- 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.
--

with System;
with HW.Config;
with HW.MMIO_Range;

pragma Elaborate_All (HW.MMIO_Range);

generic
   Dev : Address := (0, 0, 0);
   MMConf_Base : Word64 := Config.Default_MMConf_Base;
package HW.PCI.MMConf
with
   Abstract_State => (Address_State, (PCI_State with External)),
   Initializes => Address_State
is

   procedure Read8 (Value : out Word8; Offset : Index);
   procedure Read16 (Value : out Word16; Offset : Index)
   with
      Pre => Offset mod 2 = 0;
   procedure Read32 (Value : out Word32; Offset : Index)
   with
      Pre => Offset mod 4 = 0;

   procedure Write8 (Offset : Index; Value : Word8);
   procedure Write16 (Offset : Index; Value : Word16)
   with
      Pre => Offset mod 2 = 0;
   procedure Write32 (Offset : Index; Value : Word32)
   with
      Pre => Offset mod 4 = 0;

   procedure Set_Base_Address (Base : Word64);

end HW.PCI.MMConf;