coreboot-libre-fam15h-rdimm/3rdparty/libhwbase/common/hw-pci.ads

62 lines
2.2 KiB
Ada

--
-- 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.
--
package HW.PCI
is
type Bus is range 0 .. 255;
type Slot is range 0 .. 31;
type Func is range 0 .. 7;
type Address is record
Bus : PCI.Bus;
Slot : PCI.Slot;
Func : PCI.Func;
end record;
type Index is range 0 .. 4095;
Vendor_Id : constant Index := 16#00#;
Device_Id : constant Index := 16#02#;
Command : constant Index := 16#04#;
Command_Memory : constant := 16#02#;
Header_Type : constant Index := 16#0e#;
Header_Type_Mask : constant := 16#7f#;
Header_Type_Normal : constant := 16#00#;
type Resource is (Res0, Res1, Res2, Res3, Res4, Res5);
Base_Address : constant array (Resource) of Index :=
(16#10#, 16#14#, 16#18#, 16#1c#, 16#20#, 16#24#);
Base_Address_Space_Mask : constant := 1 * 2 ** 0;
Base_Address_Space_IO : constant := 1 * 2 ** 0;
Base_Address_Space_Mem : constant := 0 * 2 ** 0;
Base_Address_Mem_Type_Mask : constant := 3 * 2 ** 1;
Base_Address_Mem_Type_32 : constant := 0 * 2 ** 1;
Base_Address_Mem_Type_1M : constant := 1 * 2 ** 1;
Base_Address_Mem_Type_64 : constant := 2 * 2 ** 1;
Base_Address_Mem_Prefetch : constant := 1 * 2 ** 3;
Base_Address_IO_Mask : constant := 16#ffff_fffc#;
Base_Address_Mem_Mask : constant := 16#ffff_fff0#;
private
use type HW.Word64;
function Calc_Base_Address (Base_Addr : Word64; Dev : Address) return Word64
is
(Base_Addr +
Word64 (Dev.Bus) * 32 * 8 * 4096 +
Word64 (Dev.Slot) * 8 * 4096 +
Word64 (Dev.Func) * 4096);
end HW.PCI;