Differential D25107 Diff 72586 head/sys/x86/x86/busdma_bounce.c

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head/sys/x86/x86/busdma_bounce.c

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*/		*/
static int		static int
bounce_bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,		bounce_bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
bus_dmamap_t *mapp)		bus_dmamap_t *mapp)
{		{
vm_memattr_t attr;		vm_memattr_t attr;
int mflags;		int mflags;

WITNESS_WARN(WARN_GIANTOK \| WARN_SLEEPOK, NULL, "%s", __func__);

if (flags & BUS_DMA_NOWAIT)		if (flags & BUS_DMA_NOWAIT)
mflags = M_NOWAIT;		mflags = M_NOWAIT;
else		else
mflags = M_WAITOK;		mflags = M_WAITOK;

/* If we succeed, no mapping/bouncing will be required */		/* If we succeed, no mapping/bouncing will be required */
*mapp = NULL;		*mapp = NULL;

▲ Show 20 Lines • Show All 67 Lines • ▼ Show 20 Lines	if (*vaddr == NULL) {
printf("bus_dmamem_alloc failed to align memory properly.\n");		printf("bus_dmamem_alloc failed to align memory properly.\n");
}		}
CTR4(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d",		CTR4(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d",
__func__, dmat, dmat->common.flags, 0);		__func__, dmat, dmat->common.flags, 0);
return (0);		return (0);
}		}

/*		/*
* Free a piece of memory and it's allociated dmamap, that was allocated		* Free a piece of memory and its associated dmamap, that was allocated
* via bus_dmamem_alloc. Make the same choice for free/contigfree.		* via bus_dmamem_alloc. Make the same choice for free/contigfree.
*/		*/
static void		static void
bounce_bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)		bounce_bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
{		{
/*		/*
* dmamem does not need to be bounced, so the map should be		* dmamem does not need to be bounced, so the map should be
* NULL and the BUS_DMA_KMEM_ALLOC flag cleared if malloc()		* NULL and the BUS_DMA_KMEM_ALLOC flag cleared if malloc()
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