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authorDavid S. Miller <davem@davemloft.net>2012-05-20 00:15:37 -0400
committerDavid S. Miller <davem@davemloft.net>2012-05-20 00:15:37 -0400
commitd0be6b16c34e87cccadc55ac21bb88d46db75493 (patch)
treee12a041b83dcf8390fb90b64b10e71b2dcbafa3c /arch/sparc/include
parent74c7b28953d4eaa6a479c187aeafcfc0280da5e8 (diff)
sparc32: Remove completely unused code from asm/cache.h
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include')
-rw-r--r--arch/sparc/include/asm/cache.h114
1 files changed, 0 insertions, 114 deletions
diff --git a/arch/sparc/include/asm/cache.h b/arch/sparc/include/asm/cache.h
index 69358b590c91..5bb6991b4857 100644
--- a/arch/sparc/include/asm/cache.h
+++ b/arch/sparc/include/asm/cache.h
@@ -22,118 +22,4 @@
22 22
23#define __read_mostly __attribute__((__section__(".data..read_mostly"))) 23#define __read_mostly __attribute__((__section__(".data..read_mostly")))
24 24
25#ifdef CONFIG_SPARC32
26#include <asm/asi.h>
27
28/* Direct access to the instruction cache is provided through and
29 * alternate address space. The IDC bit must be off in the ICCR on
30 * HyperSparcs for these accesses to work. The code below does not do
31 * any checking, the caller must do so. These routines are for
32 * diagnostics only, but could end up being useful. Use with care.
33 * Also, you are asking for trouble if you execute these in one of the
34 * three instructions following a %asr/%psr access or modification.
35 */
36
37/* First, cache-tag access. */
38static inline unsigned int get_icache_tag(int setnum, int tagnum)
39{
40 unsigned int vaddr, retval;
41
42 vaddr = ((setnum&1) << 12) | ((tagnum&0x7f) << 5);
43 __asm__ __volatile__("lda [%1] %2, %0\n\t" :
44 "=r" (retval) :
45 "r" (vaddr), "i" (ASI_M_TXTC_TAG));
46 return retval;
47}
48
49static inline void put_icache_tag(int setnum, int tagnum, unsigned int entry)
50{
51 unsigned int vaddr;
52
53 vaddr = ((setnum&1) << 12) | ((tagnum&0x7f) << 5);
54 __asm__ __volatile__("sta %0, [%1] %2\n\t" : :
55 "r" (entry), "r" (vaddr), "i" (ASI_M_TXTC_TAG) :
56 "memory");
57}
58
59/* Second cache-data access. The data is returned two-32bit quantities
60 * at a time.
61 */
62static inline void get_icache_data(int setnum, int tagnum, int subblock,
63 unsigned int *data)
64{
65 unsigned int value1, value2, vaddr;
66
67 vaddr = ((setnum&0x1) << 12) | ((tagnum&0x7f) << 5) |
68 ((subblock&0x3) << 3);
69 __asm__ __volatile__("ldda [%2] %3, %%g2\n\t"
70 "or %%g0, %%g2, %0\n\t"
71 "or %%g0, %%g3, %1\n\t" :
72 "=r" (value1), "=r" (value2) :
73 "r" (vaddr), "i" (ASI_M_TXTC_DATA) :
74 "g2", "g3");
75 data[0] = value1; data[1] = value2;
76}
77
78static inline void put_icache_data(int setnum, int tagnum, int subblock,
79 unsigned int *data)
80{
81 unsigned int value1, value2, vaddr;
82
83 vaddr = ((setnum&0x1) << 12) | ((tagnum&0x7f) << 5) |
84 ((subblock&0x3) << 3);
85 value1 = data[0]; value2 = data[1];
86 __asm__ __volatile__("or %%g0, %0, %%g2\n\t"
87 "or %%g0, %1, %%g3\n\t"
88 "stda %%g2, [%2] %3\n\t" : :
89 "r" (value1), "r" (value2),
90 "r" (vaddr), "i" (ASI_M_TXTC_DATA) :
91 "g2", "g3", "memory" /* no joke */);
92}
93
94/* Different types of flushes with the ICACHE. Some of the flushes
95 * affect both the ICACHE and the external cache. Others only clear
96 * the ICACHE entries on the cpu itself. V8's (most) allow
97 * granularity of flushes on the packet (element in line), whole line,
98 * and entire cache (ie. all lines) level. The ICACHE only flushes are
99 * ROSS HyperSparc specific and are in ross.h
100 */
101
102/* Flushes which clear out both the on-chip and external caches */
103static inline void flush_ei_page(unsigned int addr)
104{
105 __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
106 "r" (addr), "i" (ASI_M_FLUSH_PAGE) :
107 "memory");
108}
109
110static inline void flush_ei_seg(unsigned int addr)
111{
112 __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
113 "r" (addr), "i" (ASI_M_FLUSH_SEG) :
114 "memory");
115}
116
117static inline void flush_ei_region(unsigned int addr)
118{
119 __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
120 "r" (addr), "i" (ASI_M_FLUSH_REGION) :
121 "memory");
122}
123
124static inline void flush_ei_ctx(unsigned int addr)
125{
126 __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
127 "r" (addr), "i" (ASI_M_FLUSH_CTX) :
128 "memory");
129}
130
131static inline void flush_ei_user(unsigned int addr)
132{
133 __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
134 "r" (addr), "i" (ASI_M_FLUSH_USER) :
135 "memory");
136}
137#endif /* CONFIG_SPARC32 */
138
139#endif /* !(_SPARC_CACHE_H) */ 25#endif /* !(_SPARC_CACHE_H) */