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Kirill Smelkov
linux
Commits
74bf528d
Commit
74bf528d
authored
Nov 02, 2002
by
Geert Uytterhoeven
Committed by
Linus Torvalds
Nov 02, 2002
Browse files
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[PATCH] Sun-3 DVMA debugging
Add Sun-3 DVMA debugging code (currently disabled, from Sam Creasey)
parent
7333261f
Changes
1
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1 changed file
with
78 additions
and
1 deletion
+78
-1
arch/m68k/sun3/sun3dvma.c
arch/m68k/sun3/sun3dvma.c
+78
-1
No files found.
arch/m68k/sun3/sun3dvma.c
View file @
74bf528d
...
...
@@ -14,6 +14,8 @@
#include <asm/pgtable.h>
#include <asm/dvma.h>
#undef DVMA_DEBUG
#ifdef CONFIG_SUN3X
extern
void
dvma_unmap_iommu
(
unsigned
long
baddr
,
int
len
);
#else
...
...
@@ -22,6 +24,10 @@ static inline void dvma_unmap_iommu(unsigned long a, int b)
}
#endif
#ifdef CONFIG_SUN3
extern
void
sun3_dvma_init
(
void
);
#endif
unsigned
long
iommu_use
[
IOMMU_TOTAL_ENTRIES
];
#define dvma_index(baddr) ((baddr - DVMA_START) >> DVMA_PAGE_SHIFT)
...
...
@@ -39,6 +45,60 @@ static struct list_head hole_list;
static
struct
list_head
hole_cache
;
static
struct
hole
initholes
[
64
];
#ifdef DVMA_DEBUG
static
unsigned
long
dvma_allocs
=
0
;
static
unsigned
long
dvma_frees
=
0
;
static
unsigned
long
long
dvma_alloc_bytes
=
0
;
static
unsigned
long
long
dvma_free_bytes
=
0
;
static
void
print_use
(
void
)
{
int
i
;
int
j
=
0
;
printk
(
"dvma entry usage:
\n
"
);
for
(
i
=
0
;
i
<
IOMMU_TOTAL_ENTRIES
;
i
++
)
{
if
(
!
iommu_use
[
i
])
continue
;
j
++
;
printk
(
"dvma entry: %08lx len %08lx
\n
"
,
(
i
<<
DVMA_PAGE_SHIFT
)
+
DVMA_START
,
iommu_use
[
i
]);
}
printk
(
"%d entries in use total
\n
"
,
j
);
printk
(
"allocation/free calls: %lu/%lu
\n
"
,
dvma_allocs
,
dvma_frees
);
printk
(
"allocation/free bytes: %Lx/%Lx
\n
"
,
dvma_alloc_bytes
,
dvma_free_bytes
);
}
static
void
print_holes
(
struct
list_head
*
holes
)
{
struct
list_head
*
cur
;
struct
hole
*
hole
;
printk
(
"listing dvma holes
\n
"
);
list_for_each
(
cur
,
holes
)
{
hole
=
list_entry
(
cur
,
struct
hole
,
list
);
if
((
hole
->
start
==
0
)
&&
(
hole
->
end
==
0
)
&&
(
hole
->
size
==
0
))
continue
;
printk
(
"hole: start %08lx end %08lx size %08lx
\n
"
,
hole
->
start
,
hole
->
end
,
hole
->
size
);
}
printk
(
"end of hole listing...
\n
"
);
}
#endif DVMA_DEBUG
static
inline
int
refill
(
void
)
{
...
...
@@ -93,7 +153,11 @@ static inline unsigned long get_baddr(int len, unsigned long align)
struct
hole
*
hole
;
if
(
list_empty
(
&
hole_list
))
{
printk
(
"out of dvma holes!
\n
"
);
#ifdef DVMA_DEBUG
printk
(
"out of dvma holes! (printing hole cache)
\n
"
);
print_holes
(
&
hole_cache
);
print_use
();
#endif
BUG
();
}
...
...
@@ -111,11 +175,19 @@ static inline unsigned long get_baddr(int len, unsigned long align)
hole
->
end
-=
newlen
;
hole
->
size
-=
newlen
;
dvma_entry_use
(
hole
->
end
)
=
newlen
;
#ifdef DVMA_DEBUG
dvma_allocs
++
;
dvma_alloc_bytes
+=
newlen
;
#endif
return
hole
->
end
;
}
else
if
(
hole
->
size
==
newlen
)
{
list_del
(
&
(
hole
->
list
));
list_add
(
&
(
hole
->
list
),
&
hole_cache
);
dvma_entry_use
(
hole
->
start
)
=
newlen
;
#ifdef DVMA_DEBUG
dvma_allocs
++
;
dvma_alloc_bytes
+=
newlen
;
#endif
return
hole
->
start
;
}
...
...
@@ -140,6 +212,11 @@ static inline int free_baddr(unsigned long baddr)
baddr
&=
DVMA_PAGE_MASK
;
dvma_unmap_iommu
(
baddr
,
len
);
#ifdef DVMA_DEBUG
dvma_frees
++
;
dvma_free_bytes
+=
len
;
#endif
list_for_each
(
cur
,
&
hole_list
)
{
hole
=
list_entry
(
cur
,
struct
hole
,
list
);
...
...
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