개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

ddi_iomin(9f)

ddi_iomin(9F)                  Kernel Functions                  ddi_iomin(9F)



NAME
       ddi_iomin - find minimum alignment and transfer size for DMA

SYNOPSIS
       #include <sys/conf.h>
       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       int ddi_iomin(dev_info_t *dip, int initial, int streaming);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI). This interface is obsolete.

PARAMETERS
       dip          A pointer to the device's dev_info structure.


       initial      The initial minimum DMAtransfer 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  stream‐
                    ing versus non-streaming access mode).


DESCRIPTION
       The  ddi_iomin()  function,  finds out the minimum DMAtransfer 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 inter‐
       vening bus adapters on the granularity of a DMA transfer.

RETURN VALUES
       The ddi_iomin() function returns the minimum DMAtransfer size  for  the
       calling  device,  or  it  returns zero, which means that you cannot get
       there from here.

CONTEXT
       This function can be called from user, interrupt, or kernel context.

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE VALUE _ Interface StabilityObsolete


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 in Oracle Solaris 11.4



Oracle Solaris 11.4               04 Apr 2006                    ddi_iomin(9F)