diff options
Diffstat (limited to 'dev/kernel/DmaKit')
| -rw-r--r-- | dev/kernel/DmaKit/DmaPool.h | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/dev/kernel/DmaKit/DmaPool.h b/dev/kernel/DmaKit/DmaPool.h index 9decb3f1..d4bec398 100644 --- a/dev/kernel/DmaKit/DmaPool.h +++ b/dev/kernel/DmaKit/DmaPool.h @@ -2,8 +2,8 @@ Copyright (C) 2025, Amlal El Mahrouss , all rights reserved. - File: FileMgr.h - Purpose: Kernel file manager. + File: DmaPool.h + Purpose: Dma Pool Manager. ------------------------------------------- */ @@ -15,6 +15,13 @@ #ifdef __NE_AMD64__ #define kNeDMAPoolStart (0x1000000) #define kNeDMAPoolSize (0x1000000) +#elif defined(__NE_ARM64__) +/// @todo what reference offset shall we use? +#define kNeDMAPoolStart (0x1000000) +#define kNeDMAPoolSize (0x1000000) +#endif + +#define kNeDMABestAlign __BIGGEST_ALIGNMENT__ namespace Kernel { /// @brief DMA pool base pointer, here we're sure that AHCI or whatever tricky standard sees it. @@ -31,6 +38,11 @@ inline VoidPtr rtl_dma_alloc(SizeT size, SizeT align) { return nullptr; } + /// Check alignement according to architecture. + if ((align % kNeDMABestAlign) != 0) { + return nullptr; + } + UIntPtr addr = (UIntPtr) kDmaPoolPtr; /// here we just align the address according to a `align` variable, i'd rather be a power of two @@ -84,5 +96,4 @@ inline Void rtl_dma_flush(VoidPtr ptr, SizeT size_buffer) { HAL::mm_memory_fence((VoidPtr) ((UInt8*) ptr + buf_idx)); } } -} // namespace Kernel -#endif
\ No newline at end of file +} // namespace Kernel
\ No newline at end of file |