Direct Memory Access (DMA) Functions

Language:

The DMA functions are:

ddi_dma_alloc_handle(): Allocate a DMA handle
ddi_dma_free_handle(): Free a DMA handle
ddi_dma_mem_alloc(): Allocate memory for a DMA transfer
ddi_dma_mem_free(): Free previously allocated DMA memory
ddi_dma_addr_bind_handle(): Bind an address to a DMA handle
ddi_dma_buf_bind_handle(): Bind a system buffer to a DMA handle
ddi_dma_unbind_handle(): Unbind the address in a DMA handle
ddi_dma_nextcookie(): Retrieve the subsequent DMA cookie
ddi_dma_getwin(): Activate a new DMA window
ddi_dma_numwin(): Retrieve number of DMA windows
ddi_dma_sync(): Synchronize CPU and I/O views of memory
ddi_check_dma_handle(): Check a DMA handle
ddi_slaveonly(): Report whether a device is installed in a slave access-only location
ddi_iomin(): Find the minimum alignment and transfer size for DMA
ddi_dma_burstsizes(): Find out the allowed burst sizes for a DMA mapping
ddi_dma_devalign(): Find DMA mapping alignment and minimum transfer size
ddi_dmae_alloc(): Acquire a DMA channel
ddi_dmae_release(): Release a DMA channel
ddi_dmae_getattr(): Get the DMA engine attributes
ddi_dmae_prog(): Program a DMA channel
ddi_dmae_stop(): Terminate a DMA engine operation
ddi_dmae_disable(): Disable a DMA channel
ddi_dmae_enable(): Enable a DMA channel
ddi_dmae_getcnt(): Get the remaining DMA engine count
ddi_dmae_1stparty(): Configure the DMA channel cascade mode
ddi_dma_coff(): Convert a DMA cookie to an offset within a DMA handle

Table 31 Deprecated Direct Memory Access (DMA) Functions

Deprecated Function	Replacement
`ddi_dma_addr_setup()`	`ddi_dma_alloc_handle()`, `ddi_dma_addr_bind_handle()`
`ddi_dma_buf_setup()`	`ddi_dma_alloc_handle()`, `ddi_dma_buf_bind_handle()`
`ddi_dma_curwin()`	`ddi_dma_getwin()`
`ddi_dma_free()`	`ddi_dma_free_handle()`
`ddi_dma_htoc()`	`ddi_dma_addr_bind_handle()`, `ddi_dma_buf_bind_handle()`
`ddi_dma_movwin()`	`ddi_dma_getwin()`
`ddi_dma_nextseg()`	`ddi_dma_nextcookie()`
`ddi_dma_segtocookie()`	`ddi_dma_nextcookie()`
`ddi_dma_setup()`	`ddi_dma_alloc_handle()`, `ddi_dma_addr_bind_handle()`, `ddi_dma_buf_bind_handle()`
`ddi_dmae_getlim()`	`ddi_dmae_getattr()`
`ddi_iopb_alloc()`	`ddi_dma_mem_alloc()`
`ddi_iopb_free()`	`ddi_dma_mem_free()`
`ddi_mem_alloc()`	`ddi_dma_mem_alloc()`
`ddi_mem_free()`	`ddi_dma_mem_free()`
`hat_getkpfnum()`	`ddi_dma_addr_bind_handle()`, `ddi_dma_buf_bind_handle()`, `ddi_dma_nextcookie()`