1 /*---------------------------------------------------------------------------*
2   Project:  TwlSDK - NWM - libraries
3   File:     nwm_end.c
4 
5   Copyright 2007-2008 Nintendo. All rights reserved.
6 
7   These coded instructions, statements, and computer programs contain
8   proprietary information of Nintendo of America Inc. and/or Nintendo
9   Company Ltd., and are protected by Federal copyright law. They may
10   not be disclosed to third parties or copied or duplicated in any form,
11   in whole or in part, without the prior written consent of Nintendo.
12 
13   $Date:: 2008-09-17#$
14   $Rev: 8556 $
15   $Author: okubata_ryoma $
16  *---------------------------------------------------------------------------*/
17 
18 #include <twl.h>
19 #include "nwm_common_private.h"
20 #include "nwm_arm9_private.h"
21 
22 
23 /*---------------------------------------------------------------------------*
24   Name:         NWM_End
25 
26   Description:
27 
28 
29   Arguments:    callback: Callback function that is called when the asynchronous process completes
30 
31   Returns:      NWMRetCode: Returns the processing result.
32                                 Returns NWM_ERRCODE_OPERATING if asynchronous processing started successfully. Afterwards, the asynchronous processing results will be passed to the callback.
33 
34  *---------------------------------------------------------------------------*/
35 
NWM_End(void)36 NWMRetCode NWM_End(void)
37 {
38     NWMRetCode result;
39     OSIntrMode e;
40     extern NWMArm9Buf *nwm9buf;
41     extern u8 nwmInitialized;
42 
43     SDK_NULL_ASSERT(nwm9buf);
44 
45     // This can only run in the INITIALIZED state
46     result = NWMi_CheckState(1, NWM_STATE_INITIALIZED);
47     NWM_CHECK_RESULT(result);
48 
49     e = OS_DisableInterrupts();
50 
51     nwm9buf->status->state = NWM_STATE_NONE;  // As an exception, set the initial state here alone (this was originally done by the ARM7)
52 
53     // Clears the FIFO buffer writable flag
54     NWMi_ClearFifoRecvFlag();
55 
56     PXI_SetFifoRecvCallback(PXI_FIFO_TAG_WMW, NULL);
57     nwm9buf = 0;
58 
59     // Normal end
60     nwmInitialized = 0;
61     (void)OS_RestoreInterrupts(e);
62     return NWM_RETCODE_SUCCESS;
63 }
64