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Make this even closer to other busdma backends.

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This commit is contained in:
Maxime Henrion 2003-07-01 21:21:45 +00:00
parent 3b8caa9bab
commit 75f9bf73ec
1 changed files with 26 additions and 12 deletions
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38
sys/ia64/ia64/busdma_machdep.c
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@ -104,12 +104,21 @@ static struct bus_dmamap nobounce_dmamap;
static void init_bounce_pages(void *dummy);
static int alloc_bounce_pages(bus_dma_tag_t dmat, u_int numpages);
static int reserve_bounce_pages(bus_dma_tag_t dmat, bus_dmamap_t map);
static vm_offset_t add_bounce_page(bus_dma_tag_t dmat, bus_dmamap_t map,
static int reserve_bounce_pages(bus_dma_tag_t dmat, bus_dmamap_t map,
int commit);
static bus_addr_t add_bounce_page(bus_dma_tag_t dmat, bus_dmamap_t map,
vm_offset_t vaddr, bus_size_t size);
static void free_bounce_page(bus_dma_tag_t dmat, struct bounce_page *bpage);
static __inline int run_filter(bus_dma_tag_t dmat, bus_addr_t paddr);
/*
* Return true if a match is made.
*
* To find a match walk the chain of bus_dma_tag_t's looking for 'paddr'.
*
* If paddr is within the bounds of the dma tag then call the filter callback
* to check for a match, if there is no filter callback then assume a match.
*/
static __inline int
run_filter(bus_dma_tag_t dmat, bus_addr_t paddr)
{
@ -280,8 +289,14 @@ bus_dma_tag_destroy(bus_dma_tag_t dmat)
atomic_subtract_int(&dmat->ref_count, 1);
if (dmat->ref_count == 0) {
free(dmat, M_DEVBUF);
}
dmat = parent;
/*
* Last reference count, so
* release our reference
* count on our parent.
*/
dmat = parent;
} else
dmat = NULL;
}
}
return (0);
@ -423,7 +438,7 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
/*
* Free a piece of memory and it's allociated dmamap, that was allocated
* via bus_dmamem_alloc.
* via bus_dmamem_alloc. Make the same choice for free/contigfree.
*/
void
bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
@ -523,7 +538,7 @@ bus_dmamap_load(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
mtx_unlock(&bounce_lock);
return (ENOMEM);
}
} else {
} else {
if (reserve_bounce_pages(dmat, map, 1) != 0) {
/* Queue us for resources */
map->dmat = dmat;
@ -618,7 +633,7 @@ _bus_dmamap_load_buffer(bus_dma_tag_t dmat,
pmap = NULL;
lastaddr = *lastaddrp;
bmask = ~(dmat->boundary - 1);
bmask = ~(dmat->boundary - 1);
for (seg = *segp; buflen > 0 ; ) {
/*
@ -705,7 +720,7 @@ bus_dmamap_load_mbuf(bus_dma_tag_t dmat, bus_dmamap_t map,
error = 0;
if (m0->m_pkthdr.len <= dmat->maxsize) {
int first = 1;
vm_offset_t lastaddr = 0;
bus_addr_t lastaddr = 0;
struct mbuf *m;
for (m = m0; m != NULL && error == 0; m = m->m_next) {
@ -741,7 +756,7 @@ bus_dmamap_load_uio(bus_dma_tag_t dmat, bus_dmamap_t map,
bus_dmamap_callback2_t *callback, void *callback_arg,
int flags)
{
vm_offset_t lastaddr;
bus_addr_t lastaddr;
#ifdef __GNUC__
bus_dma_segment_t dm_segments[dmat->nsegments];
#else
@ -826,7 +841,6 @@ _bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)
struct bounce_page *bpage;
if ((bpage = STAILQ_FIRST(&map->bpages)) != NULL) {
/*
* Handle data bouncing. We might also
* want to add support for invalidating
@ -888,7 +902,7 @@ alloc_bounce_pages(bus_dma_tag_t dmat, u_int numpages)
PAGE_SIZE,
dmat->boundary);
mtx_unlock(&Giant);
if (bpage->vaddr == NULL) {
if (bpage->vaddr == 0) {
free(bpage, M_DEVBUF);
break;
}
@ -921,7 +935,7 @@ reserve_bounce_pages(bus_dma_tag_t dmat, bus_dmamap_t map, int commit)
return (pages);
}
static vm_offset_t
static bus_addr_t
add_bounce_page(bus_dma_tag_t dmat, bus_dmamap_t map, vm_offset_t vaddr,
bus_size_t size)
{