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| author | spicyjpeg <thatspicyjpeg@gmail.com> | 2022-12-28 12:18:29 +0100 |
|---|---|---|
| committer | spicyjpeg <thatspicyjpeg@gmail.com> | 2022-12-28 12:18:29 +0100 |
| commit | 7e350980d5c09bbc81a0de01bf016a87ecfc4feb (patch) | |
| tree | 26b403d12eea34a4644b3d147f00e1d1455e7f52 /libpsn00b/psxetc | |
| parent | eaec942f56ceec9c14de5c4185a02602abadd50a (diff) | |
| download | psn00bsdk-7e350980d5c09bbc81a0de01bf016a87ecfc4feb.tar.gz | |
Add CdUnlock() and DMA priority API
Diffstat (limited to 'libpsn00b/psxetc')
| -rw-r--r-- | libpsn00b/psxetc/interrupts.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libpsn00b/psxetc/interrupts.c b/libpsn00b/psxetc/interrupts.c index f2a273c..7c8b206 100644 --- a/libpsn00b/psxetc/interrupts.c +++ b/libpsn00b/psxetc/interrupts.c @@ -157,6 +157,31 @@ void *GetDMACallback(DMA_Channel dma) { return _dma_handlers[dma]; } +/* DMA channel priority API */ + +int SetDMAPriority(DMA_Channel dma, int priority) { + if ((dma < 0) || (dma >= NUM_DMA_CHANNELS)) + return -1; + + uint32_t dpcr = DMA_DPCR; + uint32_t channel = dpcr >> (dma * 4); + + dpcr &= ~(0xf << (dma * 4)); + if (priority >= 0) + dpcr |= ((priority & 7) | 8) << (dma * 4); + + DMA_DPCR = dpcr; + return (channel & 8) ? (channel & 7) : -1; +} + +int GetDMAPriority(DMA_Channel dma) { + if ((dma < 0) || (dma >= NUM_DMA_CHANNELS)) + return -1; + + uint32_t channel = DMA_DPCR >> (dma * 4); + return (channel & 8) ? (channel & 7) : -1; +} + /* Hook installation/removal API */ int ResetCallback(void) { |