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authorDavid S. Miller <davem@davemloft.net>2012-05-12 00:07:50 -0400
committerDavid S. Miller <davem@davemloft.net>2012-05-12 00:07:50 -0400
commit716a5d73a787a3d1f6e2bd8ce34a788bb8bf368f (patch)
tree28fe30965f8016d6eefc16e58c416118943fd75d /arch/sparc
parent6b7679dd65f0ed072bd675426ca416e572979b1c (diff)
sparc32: Kill asm/vac-ops.h
All sun4/sun4c stuff and unused. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/include/asm/pgtable_32.h1
-rw-r--r--arch/sparc/include/asm/uaccess_32.h1
-rw-r--r--arch/sparc/include/asm/vac-ops.h127
-rw-r--r--arch/sparc/mm/init_32.c1
4 files changed, 0 insertions, 130 deletions
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
index f451d439bddb..9f3ab0ab8e82 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -17,7 +17,6 @@
17#include <linux/swap.h> 17#include <linux/swap.h>
18#include <asm/types.h> 18#include <asm/types.h>
19#include <asm/pgtsrmmu.h> 19#include <asm/pgtsrmmu.h>
20#include <asm/vac-ops.h>
21#include <asm/oplib.h> 20#include <asm/oplib.h>
22#include <asm/btfixup.h> 21#include <asm/btfixup.h>
23#include <asm/cpu_type.h> 22#include <asm/cpu_type.h>
diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
index 8303ac481034..d50c310f5d38 100644
--- a/arch/sparc/include/asm/uaccess_32.h
+++ b/arch/sparc/include/asm/uaccess_32.h
@@ -12,7 +12,6 @@
12#include <linux/sched.h> 12#include <linux/sched.h>
13#include <linux/string.h> 13#include <linux/string.h>
14#include <linux/errno.h> 14#include <linux/errno.h>
15#include <asm/vac-ops.h>
16#endif 15#endif
17 16
18#ifndef __ASSEMBLY__ 17#ifndef __ASSEMBLY__
diff --git a/arch/sparc/include/asm/vac-ops.h b/arch/sparc/include/asm/vac-ops.h
deleted file mode 100644
index a63e88ef0426..000000000000
--- a/arch/sparc/include/asm/vac-ops.h
+++ /dev/null
@@ -1,127 +0,0 @@
1#ifndef _SPARC_VAC_OPS_H
2#define _SPARC_VAC_OPS_H
3
4/* vac-ops.h: Inline assembly routines to do operations on the Sparc
5 * VAC (virtual address cache) for the sun4c.
6 *
7 * Copyright (C) 1994, David S. Miller (davem@caip.rutgers.edu)
8 */
9
10#include <asm/sysen.h>
11#include <asm/contregs.h>
12#include <asm/asi.h>
13
14/* The SUN4C models have a virtually addressed write-through
15 * cache.
16 *
17 * The cache tags are directly accessible through an ASI and
18 * each have the form:
19 *
20 * ------------------------------------------------------------
21 * | MBZ | CONTEXT | WRITE | PRIV | VALID | MBZ | TagID | MBZ |
22 * ------------------------------------------------------------
23 * 31 25 24 22 21 20 19 18 16 15 2 1 0
24 *
25 * MBZ: These bits are either unused and/or reserved and should
26 * be written as zeroes.
27 *
28 * CONTEXT: Records the context to which this cache line belongs.
29 *
30 * WRITE: A copy of the writable bit from the mmu pte access bits.
31 *
32 * PRIV: A copy of the privileged bit from the pte access bits.
33 *
34 * VALID: If set, this line is valid, else invalid.
35 *
36 * TagID: Fourteen bits of tag ID.
37 *
38 * Every virtual address is seen by the cache like this:
39 *
40 * ----------------------------------------
41 * | RESV | TagID | LINE | BYTE-in-LINE |
42 * ----------------------------------------
43 * 31 30 29 16 15 4 3 0
44 *
45 * RESV: Unused/reserved.
46 *
47 * TagID: Used to match the Tag-ID in that vac tags.
48 *
49 * LINE: Which line within the cache
50 *
51 * BYTE-in-LINE: Which byte within the cache line.
52 */
53
54/* Sun4c VAC Tags */
55#define S4CVACTAG_CID 0x01c00000
56#define S4CVACTAG_W 0x00200000
57#define S4CVACTAG_P 0x00100000
58#define S4CVACTAG_V 0x00080000
59#define S4CVACTAG_TID 0x0000fffc
60
61/* Sun4c VAC Virtual Address */
62/* These aren't used, why bother? (Anton) */
63#if 0
64#define S4CVACVA_TID 0x3fff0000
65#define S4CVACVA_LINE 0x0000fff0
66#define S4CVACVA_BIL 0x0000000f
67#endif
68
69/* The indexing of cache lines creates a problem. Because the line
70 * field of a virtual address extends past the page offset within
71 * the virtual address it is possible to have what are called
72 * 'bad aliases' which will create inconsistencies. So we must make
73 * sure that within a context that if a physical page is mapped
74 * more than once, that 'extra' line bits are the same. If this is
75 * not the case, and thus is a 'bad alias' we must turn off the
76 * cacheable bit in the pte's of all such pages.
77 */
78
79#define S4CVAC_BADBITS 0x0000f000
80
81/* The following is true if vaddr1 and vaddr2 would cause
82 * a 'bad alias'.
83 */
84#define S4CVAC_BADALIAS(vaddr1, vaddr2) \
85 ((((unsigned long) (vaddr1)) ^ ((unsigned long) (vaddr2))) & \
86 (S4CVAC_BADBITS))
87
88/* The following structure describes the characteristics of a sun4c
89 * VAC as probed from the prom during boot time.
90 */
91struct sun4c_vac_props {
92 unsigned int num_bytes; /* Size of the cache */
93 unsigned int do_hwflushes; /* Hardware flushing available? */
94 unsigned int linesize; /* Size of each line in bytes */
95 unsigned int log2lsize; /* log2(linesize) */
96 unsigned int on; /* VAC is enabled */
97};
98
99extern struct sun4c_vac_props sun4c_vacinfo;
100
101/* sun4c_enable_vac() enables the sun4c virtual address cache. */
102static inline void sun4c_enable_vac(void)
103{
104 __asm__ __volatile__("lduba [%0] %1, %%g1\n\t"
105 "or %%g1, %2, %%g1\n\t"
106 "stba %%g1, [%0] %1\n\t"
107 : /* no outputs */
108 : "r" ((unsigned int) AC_SENABLE),
109 "i" (ASI_CONTROL), "i" (SENABLE_CACHE)
110 : "g1", "memory");
111 sun4c_vacinfo.on = 1;
112}
113
114/* sun4c_disable_vac() disables the virtual address cache. */
115static inline void sun4c_disable_vac(void)
116{
117 __asm__ __volatile__("lduba [%0] %1, %%g1\n\t"
118 "andn %%g1, %2, %%g1\n\t"
119 "stba %%g1, [%0] %1\n\t"
120 : /* no outputs */
121 : "r" ((unsigned int) AC_SENABLE),
122 "i" (ASI_CONTROL), "i" (SENABLE_CACHE)
123 : "g1", "memory");
124 sun4c_vacinfo.on = 0;
125}
126
127#endif /* !(_SPARC_VAC_OPS_H) */
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index 15848e7ea049..21342db00a09 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -27,7 +27,6 @@
27#include <linux/gfp.h> 27#include <linux/gfp.h>
28 28
29#include <asm/sections.h> 29#include <asm/sections.h>
30#include <asm/vac-ops.h>
31#include <asm/page.h> 30#include <asm/page.h>
32#include <asm/pgtable.h> 31#include <asm/pgtable.h>
33#include <asm/vaddrs.h> 32#include <asm/vaddrs.h>