SND_DMA_PROGRAM(9) Miscellaneous Functions SND_DMA_PROGRAM(9)NAME
snd_dma_program - program an ISA DMA transfer
void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
the dma number
the physical address of the buffer
the DMA transfer size
the DMA transfer mode, DMA_MODE_XXX
Programs an ISA DMA transfer for the given buffer.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SND_DMA_PROGRAM(9)
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ddi_iomin(9F) Kernel Functions for Drivers ddi_iomin(9F)NAME
ddi_iomin - find minimum alignment and transfer size for DMA
int ddi_iomin(dev_info_t *dip, int initial, int streaming);
Solaris DDI specific (Solaris DDI).
dip A pointer to the device's dev_info structure.
initial The initial minimum DMA transfer size in bytes. This may be zero or an appropriate dlim_minxfer value for device's
ddi_dma_lim structure (see ddi_dma_lim_sparc(9S) or ddi_dma_lim_x86(9S)). This value must be a power of two.
streaming This argument, if non-zero, indicates that the returned value should be modified to account for streaming mode accesses
(see ddi_dma_req(9S) for a discussion of streaming versus non-streaming access mode).
ddi_iomin(), finds out the minimum DMA transfer size for the device pointed to by dip. This provides a mechanism by which a driver can
determine the effects of underlying caches as well as intervening bus adapters on the granularity of a DMA transfer.
ddi_iomin() returns the minimum DMA transfer size for the calling device, or it returns zero, which means that you cannot get there from
This function can be called from user or interrupt context.
SEE ALSO ddi_dma_devalign(9F), ddi_dma_setup(9F), ddi_dma_sync(9F), ddi_dma_lim_sparc(9S), ddi_dma_lim_x86(9S), ddi_dma_req(9S)
Writing Device Drivers
SunOS 5.10 1 Feb 1994 ddi_iomin(9F)
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