File: /usr/src/linux/include/asm-sparc/turbosparc.h
1 /* $Id: turbosparc.h,v 1.4 1998/08/16 16:02:42 ecd Exp $
2 * turbosparc.h: Defines specific to the TurboSparc module.
3 * This is SRMMU stuff.
4 *
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */
7 #ifndef _SPARC_TURBOSPARC_H
8 #define _SPARC_TURBOSPARC_H
9
10 #include <asm/asi.h>
11 #include <asm/pgtsrmmu.h>
12
13 /* Bits in the SRMMU control register for TurboSparc modules.
14 *
15 * -------------------------------------------------------------------
16 * |impl-vers| RSV| PMC |PE|PC| RSV |BM| RFR |IC|DC|PSO|RSV|ICS|NF|ME|
17 * -------------------------------------------------------------------
18 * 31 24 23-21 20-19 18 17 16-15 14 13-10 9 8 7 6-3 2 1 0
19 *
20 * BM: Boot Mode -- 0 = not in boot mode, 1 = in boot mode
21 *
22 * This indicates whether the TurboSparc is in boot-mode or not.
23 *
24 * IC: Instruction Cache -- 0 = off, 1 = on
25 * DC: Data Cache -- 0 = off, 1 = 0n
26 *
27 * These bits enable the on-cpu TurboSparc split I/D caches.
28 *
29 * ICS: ICache Snooping -- 0 = disable, 1 = enable snooping of icache
30 * NF: No Fault -- 0 = faults generate traps, 1 = faults don't trap
31 * ME: MMU enable -- 0 = mmu not translating, 1 = mmu translating
32 *
33 */
34
35 #define TURBOSPARC_MMUENABLE 0x00000001
36 #define TURBOSPARC_NOFAULT 0x00000002
37 #define TURBOSPARC_ICSNOOP 0x00000004
38 #define TURBOSPARC_PSO 0x00000080
39 #define TURBOSPARC_DCENABLE 0x00000100 /* Enable data cache */
40 #define TURBOSPARC_ICENABLE 0x00000200 /* Enable instruction cache */
41 #define TURBOSPARC_BMODE 0x00004000
42 #define TURBOSPARC_PARITYODD 0x00020000 /* Parity odd, if enabled */
43 #define TURBOSPARC_PCENABLE 0x00040000 /* Enable parity checking */
44
45 /* Bits in the CPU configuration register for TurboSparc modules.
46 *
47 * -------------------------------------------------------
48 * |IOClk|SNP|AXClk| RAH | WS | RSV |SBC|WT|uS2|SE|SCC|
49 * -------------------------------------------------------
50 * 31 30 29-28 27-26 25-23 22-8 7-6 5 4 3 2-0
51 *
52 */
53
54 #define TURBOSPARC_SCENABLE 0x00000008 /* Secondary cache enable */
55 #define TURBOSPARC_uS2 0x00000010 /* Swift compatibility mode */
56 #define TURBOSPARC_WTENABLE 0x00000020 /* Write thru for dcache */
57 #define TURBOSPARC_SNENABLE 0x40000000 /* DVMA snoop enable */
58
59 #ifndef __ASSEMBLY__
60
61 /* Bits [13:5] select one of 512 instruction cache tags */
62 extern __inline__ void turbosparc_inv_insn_tag(unsigned long addr)
63 {
64 __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
65 "r" (addr), "i" (ASI_M_TXTC_TAG));
66 }
67
68 /* Bits [13:5] select one of 512 data cache tags */
69 extern __inline__ void turbosparc_inv_data_tag(unsigned long addr)
70 {
71 __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
72 "r" (addr), "i" (ASI_M_DATAC_TAG));
73 }
74
75 extern __inline__ void turbosparc_flush_icache(void)
76 {
77 unsigned long addr;
78
79 for(addr = 0; addr < 0x4000; addr += 0x20)
80 turbosparc_inv_insn_tag(addr);
81 }
82
83 extern __inline__ void turbosparc_flush_dcache(void)
84 {
85 unsigned long addr;
86
87 for(addr = 0; addr < 0x4000; addr += 0x20)
88 turbosparc_inv_data_tag(addr);
89 }
90
91 extern __inline__ void turbosparc_idflash_clear(void)
92 {
93 unsigned long addr;
94
95 for(addr = 0; addr < 0x4000; addr += 0x20) {
96 turbosparc_inv_insn_tag(addr);
97 turbosparc_inv_data_tag(addr);
98 }
99 }
100
101 extern __inline__ void turbosparc_set_ccreg(unsigned long regval)
102 {
103 __asm__ __volatile__("sta %0, [%1] %2\n\t" : :
104 "r" (regval), "r" (0x600),
105 "i" (ASI_M_MMUREGS));
106 }
107
108 extern __inline__ unsigned long turbosparc_get_ccreg(void)
109 {
110 unsigned long regval;
111
112 __asm__ __volatile__("lda [%1] %2, %0\n\t" :
113 "=r" (regval) :
114 "r" (0x600),
115 "i" (ASI_M_MMUREGS));
116 return regval;
117 }
118
119 #endif /* !__ASSEMBLY__ */
120
121 #endif /* !(_SPARC_TURBOSPARC_H) */
122