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https://github.com/rvtr/TwlIPL.git
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53335a137a
・カードデータ転送終了割り込みでスレッドを起こしていたのを、DMAデータ転送終了割り込みで起こすように変更中。(今の所DMAイネーブルフラグのポーリング) git-svn-id: file:///Users/lillianskinner/Downloads/platinum/twl/TwlIPL/trunk@852 b08762b0-b915-fc4b-9d8c-17b2551a87ff
84 lines
3.1 KiB
C
84 lines
3.1 KiB
C
/*---------------------------------------------------------------------------*
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Project: TwlSDK
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File:
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*---------------------------------------------------------------------------*/
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#include <twl.h>
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#include <sysmenu.h>
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#include <hotswTypes.h>
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#include <customNDma.h>
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// Define data --------------------------------------------------------------
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#define NDMA_BLOCK_WORD_COUNT_1 0x0
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#define NDMA_NO_INTERVAL_NORMAL_SCALE 0x0
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#define NDMA_TOTAL_WORD_COUNT_1 0x1
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#define NDMA_WORD_COUNT_1 0x1
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#define ASSERT_DMANO( ndmaNo ) SDK_ASSERTMSG( (ndmaNo) <= MI_NDMA_MAX_NUM, "illegal NDMA No." );
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// Function prototype -------------------------------------------------------
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static void HOTSWi_NDmaCopy_Card(u32 ndmaNo, const void *src, void *dest, u32 size, u32 dcont);
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// ===========================================================================
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// Function Describe
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// ===========================================================================
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/*---------------------------------------------------------------------------*
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Name: HOTSW_NDmaCopy_Card
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*---------------------------------------------------------------------------*/
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void HOTSW_NDmaCopy_Card(u32 ndmaNo, const void *src, void *dest, u32 size)
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{
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HOTSWi_NDmaCopy_Card(ndmaNo, src, dest, size, MI_NDMA_DEST_INC);
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}
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/*---------------------------------------------------------------------------*
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Name: HOTSW_NDmaPipe_Card
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*---------------------------------------------------------------------------*/
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void HOTSW_NDmaPipe_Card(u32 ndmaNo, const void *src, void *dest, u32 size)
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{
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HOTSWi_NDmaCopy_Card(ndmaNo, src, dest, size, MI_NDMA_DEST_FIX);
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}
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/*---------------------------------------------------------------------------*
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Name: HOTSWi_NDmaCopy_Card
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*---------------------------------------------------------------------------*/
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static void HOTSWi_NDmaCopy_Card(u32 ndmaNo, const void *src, void *dest, u32 size, u32 dcont)
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{
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u32 contData;
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OSIntrMode enabled = OS_DisableInterrupts();
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//--- Assert
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ASSERT_DMANO( ndmaNo );
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//---- confirm CARD free
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while( reg_HOTSW_MCCNT1 & REG_MI_MCCNT1_START_MASK ){}
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//---- confirm DMA free
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while( MI_IsNDmaBusy(ndmaNo) == TRUE ){
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OS_TPrintf("Dma is busy..\n");
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}
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//---- set up registers
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MI_NDMA_REG( ndmaNo, MI_NDMA_REG_SAD_WOFFSET ) = (u32)src;
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MI_NDMA_REG( ndmaNo, MI_NDMA_REG_DAD_WOFFSET ) = (u32)dest;
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MI_NDMA_REG( ndmaNo, MI_NDMA_REG_BCNT_WOFFSET ) = NDMA_NO_INTERVAL_NORMAL_SCALE;
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MI_NDMA_REG( ndmaNo, MI_NDMA_REG_TCNT_WOFFSET ) = (u32)(size/4);
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MI_NDMA_REG( ndmaNo, MI_NDMA_REG_WCNT_WOFFSET ) = NDMA_WORD_COUNT_1;
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//---- decide control register
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contData = NDMA_BLOCK_WORD_COUNT_1 | MI_NDMA_ENABLE;
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contData |= (MI_NDMA_SRC_FIX | dcont | MI_NDMA_DEST_RELOAD_DISABLE);
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#ifndef DEBUG_USED_CARD_SLOT_B_
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contData |= MI_NDMA_TIMING_CARD_A;
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#else
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contData |= MI_NDMA_TIMING_CARD_B;
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#endif
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//---- set interrupt enable
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contData |= MI_NDMA_IF_ENABLE;
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//---- start
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MI_NDMA_REG( ndmaNo, MI_NDMA_REG_CNT_WOFFSET ) = contData;
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(void)OS_RestoreInterrupts( enabled );
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}
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