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In _bus_dmamap_load, now check the return value of pmap_extract 

under DIAGNOSTIC, and fixed a bug where we weren't putting the
right size into a newly valid map.
This commit is contained in:
fredette 2001-09-06 21:38:40 +00:00
parent 7aaa6a4bc4
commit 2468247eff
1 changed files with 8 additions and 3 deletions
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11
sys/arch/sun2/sun2/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.9 2001/06/27 03:16:02 fredette Exp $ */
/* $NetBSD: machdep.c,v 1.10 2001/09/06 21:38:40 fredette Exp $ */
/*
* Copyright (c) 2001 Matthew Fredette.
@ -982,6 +982,7 @@ _bus_dmamap_load(t, map, buf, buflen, p, flags)
int pagesz = PAGE_SIZE;
bus_addr_t dva;
pmap_t pmap;
int rv;
/*
* Make sure that on error condition we return "no valid mappings".
@ -1042,7 +1043,11 @@ _bus_dmamap_load(t, map, buf, buflen, p, flags)
/*
* Get the physical address for this page.
*/
(void) pmap_extract(pmap, va, &pa);
rv = pmap_extract(pmap, va, &pa);
#ifdef DIAGNOSTIC
if (!rv)
panic("_bus_dmamap_load: no page");
#endif /* DIAGNOSTIC */
/*
* Compute the segment size, and adjust counts.
@ -1063,7 +1068,7 @@ _bus_dmamap_load(t, map, buf, buflen, p, flags)
/* Make the map truly valid. */
map->dm_nsegs = 1;
map->dm_mapsize = buflen;
map->dm_mapsize = map->dm_segs[0].ds_len;
return (0);
}