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thechaingamer
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ada-git-code

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if This.RX_DMA_Int = null or else This.SD_Int = null then
SD_Err := Read_Blocks
(This,
Block_Number * 512,
Data);
return SD_Err = OK;
end if;
This.SD_Int.Set_Transfer_State (This);
SD_Err := Read_Blocks_DMA
(This,
Block_Number * 512,
Data);
if SD_Err /= OK then
This.RX_DMA_Int.Clear_Transfer_State;
This.SD_Int.Clear_Transfer_State;
This.RX_DMA_Int.Abort_Transfer (DMA_Err);
return False;
end if;
This.SD_Int.Wait_Transfer (SD_Err);
if SD_Err /= OK then
This.RX_DMA_Int.Clear_Transfer_State;
else
This.RX_DMA_Int.Wait_For_Completion (DMA_Err);
loop
exit when not Get_Flag (This, RX_Active);
end loop;
end if;
Ret := SD_Err = OK and then DMA_Err = DMA_No_Error;
if Last_Operation (This) =
Read_Multiple_Blocks_Operation
then
SD_Err := Stop_Transfer (This);
Ret := Ret and then SD_Err = OK;
end if;
Clear_All_Status (This.RX_DMA_Int.Controller.all, This.RX_DMA_Int.Stream);
Disable (This.RX_DMA_Int.Controller.all, This.RX_DMA_Int.Stream);
Disable_Data (This);
Clear_Static_Flags (This);
Cortex_M.Cache.Invalidate_DCache
(Start => Data'Address,
Len => Data'Length);
return Ret;
end Read;
-----------
-- Write --
-----------
overriding
function Write
(This : in out SDMMC_Controller;
Block_Number : UInt64;
Data : HAL.Block_Drivers.Block) return Boolean
is
Ret : SD_Error;
DMA_Err : DMA_Error_Code;
begin
if This.TX_DMA_Int = null then
raise Program_Error with "No TX DMA controller";
end if;
if This.SD_Int = null then
raise Program_Error with "No SD interrupt controller";
end if;
Ensure_Card_Informations (This);
-- Flush the data cache
Cortex_M.Cache.Clean_DCache
(Start => Data (Data'First)'Address,
Len => Data'Length);
This.SD_Int.Set_Transfer_State (This);
Ret := Write_Blocks_DMA
(This,
Block_Number * 512,
Data);
-- this always leaves the last 12 byte standing. Why?
-- also...NDTR is not what it should be.
if Ret /= OK then
This.TX_DMA_Int.Clear_Transfer_State;
This.SD_Int.Clear_Transfer_State;
This.TX_DMA_Int.Abort_Transfer (DMA_Err);
return False;
end if;