| -- |
| -- Copyright (C) 2015-2018 secunet Security Networks AG |
| -- 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 HW.Config; |
| with HW.Time; |
| with HW.Port_IO; |
| |
| package HW.GFX.GMA |
| with |
| Abstract_State => |
| (State, |
| Init_State, |
| Config_State, |
| (Device_State with External)), |
| Initializes => |
| (Init_State, |
| Config_State) |
| is |
| |
| GTT_Page_Size : constant := 4096; |
| type GTT_Address_Type is mod 2 ** 39; |
| subtype GTT_Range is Natural range 0 .. 16#8_0000# - 1; |
| GTT_Rotation_Offset : constant GTT_Range := GTT_Range'Last / 2 + 1; |
| |
| type CPU_Type is |
| (G45, |
| Ironlake, |
| Sandybridge, |
| Ivybridge, |
| Haswell, |
| Broadwell, |
| Broxton, |
| Skylake); |
| |
| type CPU_Variant is (Normal, ULT); |
| |
| type Port_Type is |
| (Disabled, |
| Internal, |
| DP1, |
| DP2, |
| DP3, |
| HDMI1, -- or DVI |
| HDMI2, -- or DVI |
| HDMI3, -- or DVI |
| Analog); |
| |
| type Cursor_Mode is (No_Cursor, ARGB_Cursor); |
| type Cursor_Size is (Cursor_64x64, Cursor_128x128, Cursor_256x256); |
| Cursor_Width : constant array (Cursor_Size) of Width_Type := (64, 128, 256); |
| |
| subtype Cursor_Pos is Int32 range Int32'First / 2 .. Int32'Last / 2; |
| |
| type Cursor_Type is record |
| Mode : Cursor_Mode; |
| Size : Cursor_Size; |
| Center_X : Cursor_Pos; |
| Center_Y : Cursor_Pos; |
| GTT_Offset : GTT_Range; |
| end record; |
| Default_Cursor : constant Cursor_Type := |
| (Mode => No_Cursor, |
| Size => Cursor_Size'First, |
| Center_X => 0, |
| Center_Y => 0, |
| GTT_Offset => 0); |
| |
| type Pipe_Config is record |
| Port : Port_Type; |
| Framebuffer : Framebuffer_Type; |
| Cursor : Cursor_Type; |
| Mode : Mode_Type; |
| end record; |
| type Pipe_Index is (Primary, Secondary, Tertiary); |
| type Pipe_Configs is array (Pipe_Index) of Pipe_Config; |
| |
| -- Special framebuffer offset to indicate legacy VGA plane. |
| -- Only valid on primary pipe. |
| VGA_PLANE_FRAMEBUFFER_OFFSET : constant := 16#ffff_ffff#; |
| |
| pragma Warnings (GNATprove, Off, "unused variable ""Write_Delay""", |
| Reason => "Write_Delay is used for debugging only"); |
| procedure Initialize |
| (Write_Delay : in Word64 := 0; |
| Clean_State : in Boolean := False; |
| Success : out Boolean) |
| with |
| Global => |
| (In_Out => (Config_State, Device_State, Port_IO.State), |
| Output => (State, Init_State), |
| Input => (Time.State)), |
| Post => Success = Is_Initialized; |
| function Is_Initialized return Boolean |
| with |
| Global => (Input => Init_State); |
| pragma Warnings (GNATprove, On, "unused variable ""Write_Delay"""); |
| |
| pragma Warnings (GNATprove, Off, "subprogram ""Power_Up_VGA"" has no effect", |
| Reason => "Effect depends on the platform compiled for"); |
| procedure Power_Up_VGA |
| with |
| Pre => Is_Initialized; |
| |
| procedure Update_Outputs (Configs : Pipe_Configs); |
| |
| procedure Update_Cursor (Pipe : Pipe_Index; Cursor : Cursor_Type); |
| procedure Place_Cursor |
| (Pipe : Pipe_Index; |
| X : Cursor_Pos; |
| Y : Cursor_Pos); |
| procedure Move_Cursor |
| (Pipe : Pipe_Index; |
| X : Cursor_Pos; |
| Y : Cursor_Pos); |
| |
| pragma Warnings (GNATprove, Off, "subprogram ""Dump_Configs"" has no effect", |
| Reason => "It's only used for debugging"); |
| procedure Dump_Configs (Configs : Pipe_Configs); |
| |
| procedure Write_GTT |
| (GTT_Page : GTT_Range; |
| Device_Address : GTT_Address_Type; |
| Valid : Boolean); |
| |
| procedure Setup_Default_FB |
| (FB : in Framebuffer_Type; |
| Clear : in Boolean := True; |
| Success : out Boolean) |
| with |
| Pre => Is_Initialized and HW.Config.Dynamic_MMIO; |
| |
| procedure Map_Linear_FB (Linear_FB : out Word64; FB : in Framebuffer_Type) |
| with |
| Pre => Is_Initialized and HW.Config.Dynamic_MMIO; |
| |
| private |
| |
| -- For the default framebuffer setup (see below) with 90 degree rotations, |
| -- we expect the offset which is used for the final scanout to be above |
| -- `GTT_Rotation_Offset`. So we can use `Offset - GTT_Rotation_Offset` for |
| -- the physical memory location and aperture mapping. |
| function Phys_Offset (FB : Framebuffer_Type) return Word32 is |
| (if Rotation_90 (FB) |
| then FB.Offset - Word32 (GTT_Rotation_Offset) * GTT_Page_Size |
| else FB.Offset); |
| |
| ---------------------------------------------------------------------------- |
| -- State tracking for the currently configured pipes |
| |
| Cur_Configs : Pipe_Configs with Part_Of => State; |
| |
| function Requires_Scaling (Pipe_Cfg : Pipe_Config) return Boolean is |
| (Requires_Scaling (Pipe_Cfg.Framebuffer, Pipe_Cfg.Mode)); |
| |
| function Scaling_Type (Pipe_Cfg : Pipe_Config) return Scaling_Aspect is |
| (Scaling_Type (Pipe_Cfg.Framebuffer, Pipe_Cfg.Mode)); |
| |
| ---------------------------------------------------------------------------- |
| -- Internal representation of a single pipe's configuration |
| |
| subtype Active_Port_Type is Port_Type |
| range Port_Type'Succ (Disabled) .. Port_Type'Last; |
| |
| type GPU_Port is (DIGI_A, DIGI_B, DIGI_C, DIGI_D, DIGI_E, LVDS, VGA); |
| |
| subtype Digital_Port is GPU_Port range DIGI_A .. DIGI_E; |
| subtype GMCH_DP_Port is GPU_Port range DIGI_B .. DIGI_D; |
| subtype GMCH_HDMI_Port is GPU_Port range DIGI_B .. DIGI_C; |
| |
| type PCH_Port is |
| (PCH_DAC, PCH_LVDS, |
| PCH_HDMI_B, PCH_HDMI_C, PCH_HDMI_D, |
| PCH_DP_B, PCH_DP_C, PCH_DP_D); |
| |
| subtype PCH_HDMI_Port is PCH_Port range PCH_HDMI_B .. PCH_HDMI_D; |
| subtype PCH_DP_Port is PCH_Port range PCH_DP_B .. PCH_DP_D; |
| |
| type Port_Config is |
| record |
| Port : GPU_Port; |
| PCH_Port : GMA.PCH_Port; |
| Display : Display_Type; |
| Mode : Mode_Type; |
| Is_FDI : Boolean; |
| FDI : DP_Link; |
| DP : DP_Link; |
| end record; |
| |
| type FDI_Training_Type is (Simple_Training, Full_Training, Auto_Training); |
| |
| ---------------------------------------------------------------------------- |
| |
| type DP_Port is (DP_A, DP_B, DP_C, DP_D); |
| |
| ---------------------------------------------------------------------------- |
| |
| subtype DDI_HDMI_Buf_Trans_Range is Integer range 0 .. 11; |
| |
| ---------------------------------------------------------------------------- |
| |
| Tile_Width : constant array (Tiling_Type) of Pos32 := |
| (Linear => 16, X_Tiled => 128, Y_Tiled => 32); |
| Tile_Rows : constant array (Tiling_Type) of Pos32 := |
| (Linear => 1, X_Tiled => 8, Y_Tiled => 32); |
| |
| function FB_Pitch (Px : Pos_Pixel_Type; FB : Framebuffer_Type) return Natural |
| is (Natural (Div_Round_Up |
| (Pixel_To_Bytes (Px, FB), Tile_Width (FB.Tiling) * 4))); |
| |
| function Valid_Stride (FB : Framebuffer_Type) return Boolean is |
| (FB.Width + FB.Start_X <= FB.Stride and |
| Pixel_To_Bytes (FB.Stride, FB) mod (Tile_Width (FB.Tiling) * 4) = 0 and |
| FB.Height + FB.Start_Y <= FB.V_Stride and |
| FB.V_Stride mod Tile_Rows (FB.Tiling) = 0); |
| |
| end HW.GFX.GMA; |
