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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| /** | ||
| * @file dma.h | ||
| * | ||
| * @brief Direct Memory Access (DMA) module. | ||
| */ | ||
| #ifndef SCE_DMA_H | ||
| #define SCE_DMA_H | ||
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| #include "common.h" | ||
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| extern "C" | ||
| { | ||
| struct tD_CHCR | ||
| { | ||
| unsigned DIR : 1; /* Direction */ | ||
| unsigned pad0: 1; | ||
| unsigned MOD : 2; /* Mode */ | ||
| unsigned ASP : 2; /* Address stack pointer */ | ||
| unsigned TTE : 1; /* Tag trasfer enable */ | ||
| unsigned TIE : 1; /* Tag interrupt enable */ | ||
| unsigned STR : 1; /* start */ | ||
| unsigned pad1: 7; | ||
| unsigned TAG :16; /* DMAtag */ | ||
| }; | ||
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| struct sceDmaTag | ||
| { | ||
| ushort qwc; /* transfer count */ | ||
| uchar mark; /* mark */ | ||
| uchar id; /* tag */ | ||
| sceDmaTag *next; /* next tag */ | ||
| uint p[2]; /* padding */ | ||
| } __attribute__ ((aligned(16))); | ||
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| struct sceDmaChan | ||
| { | ||
| tD_CHCR chcr; // Channel control Dn_CHCR | ||
| uint p0[3]; | ||
| volatile void *madr; // Transfer memory address Dn_MADR | ||
| uint p1[3]; | ||
| volatile uint qwc; // Transfer size Dn_QWC | ||
| uint p2[3]; | ||
| volatile sceDmaTag *tadr; // Transfer tag address Dn_TADR | ||
| uint p3[3]; | ||
| volatile void *as0; // Address stack 0 Dn_ASR0 | ||
| uint p4[3]; | ||
| volatile void *as1; // Address stack Dn_ASR1 | ||
| uint p5[3]; | ||
| uint p6[4]; | ||
| uint p7[4]; | ||
| void* sadr; // SPR address Dn_SADR | ||
| uint p8[3]; | ||
| }; | ||
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| void FlushCache(int); | ||
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| /** | ||
| * @brief Reset the DMA controller | ||
| * | ||
| * @param mode 0 = disable, 1 = enable | ||
| * @return Previous mode before reset | ||
| */ | ||
| int sceDmaReset(int mode); | ||
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| /** | ||
| * @brief Start DMA transfer from memory to a device using Source Chain Mode. | ||
| * | ||
| * @param chan DMA channel for performing the transfer | ||
| * @param tag Starting address of the transfer list | ||
| */ | ||
| void sceDmaSend(sceDmaChan *chan, void *tag); | ||
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| /** | ||
| * @brief Get a DMA channel structure by ID | ||
| * | ||
| * @param id Channel number | ||
| * @return sceDmaChan* | ||
| */ | ||
| sceDmaChan *sceDmaGetChan(int id); | ||
| } | ||
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| #endif // SCE_DMA_H |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| #include "common.h" | ||
| #include <dmas.h> | ||
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| INCLUDE_ASM(const s32, "P2/dmas", StartupDma__Fv); | ||
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| DMAS::DMAS() | ||
| { | ||
| m_fPad = 0; | ||
| m_fEndPrim = 0; | ||
| Clear(); | ||
| } | ||
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| void DMAS::Clear() | ||
| { | ||
| m_pbMax = (uchar*)nullptr; | ||
| m_ab = (uchar*)nullptr; | ||
| m_pqwCnt = (QW*)nullptr; | ||
| m_pb = (uchar*)nullptr; | ||
| } | ||
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| void DMAS::Reset() | ||
| { | ||
| m_pqwCnt = (QW*)nullptr; | ||
| m_pb = m_ab; | ||
| } | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AllocGlobal__4DMASi); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AllocSw__4DMASii); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AllocStack__4DMASi); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AllocStatic__4DMASiP2QW); | ||
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| void DMAS::Detach(int* arg0, QW** arg1) | ||
| { | ||
| EndDmaCnt(); | ||
| if (arg0 != nullptr) | ||
| { | ||
| *arg0 = (uint)(m_pb - m_ab) >> 4; | ||
| } | ||
| if (arg1 != nullptr) | ||
| { | ||
| *arg1 = (QW*)m_ab; | ||
| } | ||
| Clear(); | ||
| } | ||
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| INCLUDE_ASM(const s32, "P2/dmas", DetachCopySw__4DMASPiPP2QWT2i); | ||
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| void DMAS::Send(sceDmaChan* chan) | ||
| { | ||
| EndDmaCnt(); | ||
| FlushCache(0); | ||
| sceDmaSend(chan, m_ab); | ||
| m_pb = m_ab; | ||
| } | ||
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| INCLUDE_ASM(const s32, "P2/dmas", func_00152B30); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AddDmaCnt__4DMAS); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AddDmaRefs__4DMASiP2QW); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AddDmaCall__4DMASP2QW); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AddDmaRet__4DMAS); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AddDmaBulk__4DMASiP2QW); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", AddDmaEnd__4DMAS); | ||
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| INCLUDE_ASM(const s32, "P2/dmas", EndDmaCnt__4DMAS); | ||
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| void DMAS::EndPrim(void) | ||
| { | ||
| return; | ||
| } | ||
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| INCLUDE_ASM(const s32, "P2/dmas", func_00152E20); |