Author: raj
Date: Thu Mar 11 21:16:54 2010
New Revision: 205028
URL: http://svn.freebsd.org/changeset/base/205028
Log:
Fix ARM cache handling yet more.
1) vm_machdep.c: remove the dangling allocations so they do not
un-necessarily turn off the cache upon consecutive access.
2) busdma_machdep.c: remove the same amount than shadow mapped.
Reported by: Maks Verver
Submitted by: Mark Tinguely
Reviewed by: Grzegorz Bernacki
MFC after: 3 days
Modified:
head/sys/arm/arm/busdma_machdep.c
head/sys/arm/arm/vm_machdep.c
Modified: head/sys/arm/arm/busdma_machdep.c
==============================================================================
--- head/sys/arm/arm/busdma_machdep.c Thu Mar 11 21:04:29 2010
(r205027)
+++ head/sys/arm/arm/busdma_machdep.c Thu Mar 11 21:16:54 2010
(r205028)
@@ -649,7 +649,8 @@ bus_dmamem_free(bus_dma_tag_t dmat, void
KASSERT(map->allocbuffer == vaddr,
("Trying to freeing the wrong DMA buffer"));
vaddr = map->origbuffer;
- arm_unmap_nocache(map->allocbuffer, dmat->maxsize);
+ arm_unmap_nocache(map->allocbuffer,
+ dmat->maxsize + ((vm_offset_t)vaddr & PAGE_MASK));
}
if (dmat->maxsize <= PAGE_SIZE &&
dmat->alignment < dmat->maxsize &&
Modified: head/sys/arm/arm/vm_machdep.c
==============================================================================
--- head/sys/arm/arm/vm_machdep.c Thu Mar 11 21:04:29 2010
(r205027)
+++ head/sys/arm/arm/vm_machdep.c Thu Mar 11 21:16:54 2010
(r205028)
@@ -171,6 +171,9 @@ sf_buf_free(struct sf_buf *sf)
if (sf->ref_count == 0) {
TAILQ_INSERT_TAIL(&sf_buf_freelist, sf, free_entry);
nsfbufsused--;
+ pmap_kremove(sf->kva);
+ sf->m = NULL;
+ LIST_REMOVE(sf, list_entry);
if (sf_buf_alloc_want > 0)
wakeup_one(&sf_buf_freelist);
}
@@ -502,9 +505,12 @@ arm_unmap_nocache(void *addr, vm_size_t
size = round_page(size);
i = (raddr - arm_nocache_startaddr) / (PAGE_SIZE);
- for (; size > 0; size -= PAGE_SIZE, i++)
+ for (; size > 0; size -= PAGE_SIZE, i++) {
arm_nocache_allocated[i / BITS_PER_INT] &= ~(1 << (i %
BITS_PER_INT));
+ pmap_kremove(raddr);
+ raddr += PAGE_SIZE;
+ }
}
#ifdef ARM_USE_SMALL_ALLOC
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