1 /* swift.h: Specific definitions for the _broken_ Swift SRMMU
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
10 /* Swift is so brain damaged, here is the mmu control register. */
11 #define SWIFT_ST 0x00800000 /* SW tablewalk enable */
12 #define SWIFT_WP 0x00400000 /* Watchpoint enable */
14 /* Branch folding (buggy, disable on production systems!) */
15 #define SWIFT_BF 0x00200000
16 #define SWIFT_PMC 0x00180000 /* Page mode control */
17 #define SWIFT_PE 0x00040000 /* Parity enable */
18 #define SWIFT_PC 0x00020000 /* Parity control */
19 #define SWIFT_AP 0x00010000 /* Graphics page mode control (TCX/SX) */
20 #define SWIFT_AC 0x00008000 /* Alternate Cacheability (see viking.h) */
21 #define SWIFT_BM 0x00004000 /* Boot mode */
22 #define SWIFT_RC 0x00003c00 /* DRAM refresh control */
23 #define SWIFT_IE 0x00000200 /* Instruction cache enable */
24 #define SWIFT_DE 0x00000100 /* Data cache enable */
25 #define SWIFT_SA 0x00000080 /* Store Allocate */
26 #define SWIFT_NF 0x00000002 /* No fault mode */
27 #define SWIFT_EN 0x00000001 /* MMU enable */
29 /* Bits [13:5] select one of 512 instruction cache tags */
30 static inline void swift_inv_insn_tag(unsigned long addr
)
32 __asm__
__volatile__("sta %%g0, [%0] %1\n\t"
34 : "r" (addr
), "i" (ASI_M_TXTC_TAG
)
38 /* Bits [12:4] select one of 512 data cache tags */
39 static inline void swift_inv_data_tag(unsigned long addr
)
41 __asm__
__volatile__("sta %%g0, [%0] %1\n\t"
43 : "r" (addr
), "i" (ASI_M_DATAC_TAG
)
47 static inline void swift_flush_dcache(void)
51 for (addr
= 0; addr
< 0x2000; addr
+= 0x10)
52 swift_inv_data_tag(addr
);
55 static inline void swift_flush_icache(void)
59 for (addr
= 0; addr
< 0x4000; addr
+= 0x20)
60 swift_inv_insn_tag(addr
);
63 static inline void swift_idflash_clear(void)
67 for (addr
= 0; addr
< 0x2000; addr
+= 0x10) {
68 swift_inv_insn_tag(addr
<<1);
69 swift_inv_data_tag(addr
);
73 /* Swift is so broken, it isn't even safe to use the following. */
74 static inline void swift_flush_page(unsigned long page
)
76 __asm__
__volatile__("sta %%g0, [%0] %1\n\t"
78 : "r" (page
), "i" (ASI_M_FLUSH_PAGE
)
82 static inline void swift_flush_segment(unsigned long addr
)
84 __asm__
__volatile__("sta %%g0, [%0] %1\n\t"
86 : "r" (addr
), "i" (ASI_M_FLUSH_SEG
)
90 static inline void swift_flush_region(unsigned long addr
)
92 __asm__
__volatile__("sta %%g0, [%0] %1\n\t"
94 : "r" (addr
), "i" (ASI_M_FLUSH_REGION
)
98 static inline void swift_flush_context(void)
100 __asm__
__volatile__("sta %%g0, [%%g0] %0\n\t"
102 : "i" (ASI_M_FLUSH_CTX
)
106 #endif /* !(_SPARC_SWIFT_H) */
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