diff options
Diffstat (limited to 'src/usr/mbox/mbox_dma_buffer.H')
| -rw-r--r-- | src/usr/mbox/mbox_dma_buffer.H | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/src/usr/mbox/mbox_dma_buffer.H b/src/usr/mbox/mbox_dma_buffer.H index ab208717d..dc4e86af3 100644 --- a/src/usr/mbox/mbox_dma_buffer.H +++ b/src/usr/mbox/mbox_dma_buffer.H @@ -108,6 +108,30 @@ namespace MBOX VmmManager::MBOX_DMA_PAGESIZE))); } + /** + * Get the physical address of DMA buf to send to the FSP + * @param[in] i_address, The HB address to translate + * @return [FSP physical address] + */ + ALWAYS_INLINE + uint64_t toPhysAddr(void * i_address) const + { + return mm_virt_to_phys(i_address); + } + + /** + * Get the virtual address of DMA buf to sent by the FSP + * @param[in] i_address, The FSP Physical address to translate + * @return [HB virtual address] + */ + ALWAYS_INLINE + void* toVirtAddr(uint64_t i_address) const + { + uint64_t base = reinterpret_cast<uint64_t>(iv_head); + return reinterpret_cast<void*>( + base + (i_address-iv_phys_head)); + } + private: /** @@ -123,8 +147,9 @@ namespace MBOX MAX_MASK_SIZE = sizeof(uint64_t) * 8, }; - void * iv_head; //!< Start of DMA memory - uint64_t iv_dir; //!< 1 bit per 1k buffer, 1 = available + void * iv_head; //!< Start of DMA memory + uint64_t iv_phys_head; //!< Physical translation of iv_head + uint64_t iv_dir; //!< 1 bit per 1k buffer, 1 = available }; }; // namespace |
