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Full Discussion: Re-using disks
Operating Systems Solaris Re-using disks Post 302236473 by Chains on Monday 15th of September 2008 03:16:53 PM
Old 09-15-2008
Thanks for your help seg
 

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ddi_dma_segtocookie(9F) 				   Kernel Functions for Drivers 				   ddi_dma_segtocookie(9F)

NAME
ddi_dma_segtocookie - convert a DMA segment to a DMA address cookie SYNOPSIS
#include <sys/ddi.h> #include <sys/sunddi.h> int ddi_dma_segtocookie(ddi_dma_seg_t seg, off_t *offp, off_t *lenp, ddi_dma_cookie_t *cookiep); INTERFACE LEVEL
This interface is obsolete. ddi_dma_nextcookie(9F) should be used instead. PARAMETERS
seg A DMA segment. offp A pointer to an off_t. Upon a successful return, it is filled in with the offset. This segment is addressing within the object. lenp The byte length. This segment is addressing within the object. cookiep A pointer to a DMA cookie (see ddi_dma_cookie(9S)). DESCRIPTION
ddi_dma_segtocookie() takes a DMA segment and fills in the cookie pointed to by cookiep with the appropriate address, length, and bus type to be used to program the DMA engine. ddi_dma_segtocookie() also fills in *offp and *lenp, which specify the range within the object. RETURN VALUES
ddi_dma_segtocookie() returns: DDI_SUCCESS Successfully filled in all values. DDI_FAILURE Failed to successfully fill in all values. CONTEXT
ddi_dma_segtocookie() can be called from user or interrupt context. EXAMPLES
Example 1: ddi_dma_segtocookie() example for (win = NULL; (retw = ddi_dma_nextwin(handle, win, &nwin)) != DDI_DMA_DONE; win = nwin) { if (retw != DDI_SUCCESS) { /* do error handling */ } else { for (seg = NULL; (rets = ddi_dma_nextseg(nwin, seg, &nseg)) != DDI_DMA_DONE; seg = nseg) { if (rets != DDI_SUCCESS) { /* do error handling */ } else { ddi_dma_segtocookie(nseg, &off, &len, &cookie); /* program DMA engine */ } } } } ATTRIBUTES
See attributes(5) for a description of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Stability Level |Obsolete | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5), ddi_dma_nextcookie(9F). ddi_dma_nextseg(9F), ddi_dma_nextwin(9F), ddi_dma_sync(9F), ddi_dma_cookie(9S) Writing Device Drivers SunOS 5.10 27 Sep 2002 ddi_dma_segtocookie(9F)
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