pmap_kremove can no longer be used to remove the magic device mappings

installed with pmap_kenter_flags, since the physical addresses may not
have an associated vm_page.  Add a function to do this.

Tested by:	Tomi Vainio <Tomi.Vainio@Sun.COM>

3 files changed, 16 insertions, 1 deletions

diff --git a/sys/sparc64/include/pmap.h b/sys/sparc64/include/pmap.h
index d347fc8..1a8803a 100644
--- a/sys/sparc64/include/pmap.h
+++ b/sys/sparc64/include/pmap.h
@@ -76,6 +76,7 @@ void	pmap_bootstrap(vm_offset_t ekva);
 void	pmap_context_rollover(void);
 vm_offset_t pmap_kextract(vm_offset_t va);
 void	pmap_kenter_flags(vm_offset_t va, vm_offset_t pa, u_long flags);
+void	pmap_kremove_flags(vm_offset_t va);
 void	pmap_qenter_flags(vm_offset_t va, vm_page_t *m, int count, u_long fl);
 
 int	pmap_cache_enter(vm_page_t m, vm_offset_t va);
diff --git a/sys/sparc64/sparc64/bus_machdep.c b/sys/sparc64/sparc64/bus_machdep.c
index ab53c8a..897e04d 100644
--- a/sys/sparc64/sparc64/bus_machdep.c
+++ b/sys/sparc64/sparc64/bus_machdep.c
@@ -580,7 +580,7 @@ sparc64_bus_mem_unmap(void *bh, bus_size_t size)
 	sva = trunc_page((vm_offset_t)bh);
 	endva = sva + round_page(size);
 	for (va = sva; va < endva; va += PAGE_SIZE)
-		pmap_kremove(va);
+		pmap_kremove_flags(va);
 	tlb_range_demap(kernel_pmap, sva, sva + size - 1);
 	kmem_free(kernel_map, sva, size);
 	return (0);
diff --git a/sys/sparc64/sparc64/pmap.c b/sys/sparc64/sparc64/pmap.c
index 97f085e..6df4225 100644
--- a/sys/sparc64/sparc64/pmap.c
+++ b/sys/sparc64/sparc64/pmap.c
@@ -718,6 +718,20 @@ pmap_kremove(vm_offset_t va)
 }
 
 /*
+ * Inverse of pmap_kenter_flags, used by bus_space_unmap().
+ */
+void
+pmap_kremove_flags(vm_offset_t va)
+{
+	struct tte *tp;
+
+	tp = tsb_kvtotte(va);
+	CTR3(KTR_PMAP, "pmap_kremove: va=%#lx tp=%p data=%#lx", va, tp,
+	    tp->tte_data);
+	TTE_ZERO(tp);
+}
+
+/*
  * Map a range of physical addresses into kernel virtual address space.
  *
  * The value passed in *virt is a suggested virtual address for the mapping.