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1da177e4 LT |
1 | /* $Id: mbus.h,v 1.9 1997/06/24 15:48:12 jj Exp $ |
2 | * mbus.h: Various defines for MBUS modules. | |
3 | * | |
4 | * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) | |
5 | */ | |
6 | ||
7 | #ifndef _SPARC_MBUS_H | |
8 | #define _SPARC_MBUS_H | |
9 | ||
10 | #include <asm/ross.h> /* HyperSparc stuff */ | |
11 | #include <asm/cypress.h> /* Cypress Chips */ | |
12 | #include <asm/viking.h> /* Ugh, bug city... */ | |
13 | ||
14 | enum mbus_module { | |
15 | HyperSparc = 0, | |
16 | Cypress = 1, | |
17 | Cypress_vE = 2, | |
18 | Cypress_vD = 3, | |
19 | Swift_ok = 4, | |
20 | Swift_bad_c = 5, | |
21 | Swift_lots_o_bugs = 6, | |
22 | Tsunami = 7, | |
23 | Viking_12 = 8, | |
24 | Viking_2x = 9, | |
25 | Viking_30 = 10, | |
26 | Viking_35 = 11, | |
27 | Viking_new = 12, | |
28 | TurboSparc = 13, | |
29 | SRMMU_INVAL_MOD = 14, | |
30 | }; | |
31 | ||
32 | extern enum mbus_module srmmu_modtype; | |
33 | extern unsigned int viking_rev, swift_rev, cypress_rev; | |
34 | ||
35 | /* HW Mbus module bugs we have to deal with */ | |
36 | #define HWBUG_COPYBACK_BROKEN 0x00000001 | |
37 | #define HWBUG_ASIFLUSH_BROKEN 0x00000002 | |
38 | #define HWBUG_VACFLUSH_BITROT 0x00000004 | |
39 | #define HWBUG_KERN_ACCBROKEN 0x00000008 | |
40 | #define HWBUG_KERN_CBITBROKEN 0x00000010 | |
41 | #define HWBUG_MODIFIED_BITROT 0x00000020 | |
42 | #define HWBUG_PC_BADFAULT_ADDR 0x00000040 | |
43 | #define HWBUG_SUPERSCALAR_BAD 0x00000080 | |
44 | #define HWBUG_PACINIT_BITROT 0x00000100 | |
45 | ||
46 | extern unsigned int hwbug_bitmask; | |
47 | ||
48 | /* First the module type values. To find out which you have, just load | |
49 | * the mmu control register from ASI_M_MMUREG alternate address space and | |
50 | * shift the value right 28 bits. | |
51 | */ | |
52 | /* IMPL field means the company which produced the chip. */ | |
53 | #define MBUS_VIKING 0x4 /* bleech, Texas Instruments Module */ | |
54 | #define MBUS_LSI 0x3 /* LSI Logics */ | |
55 | #define MBUS_ROSS 0x1 /* Ross is nice */ | |
56 | #define MBUS_FMI 0x0 /* Fujitsu Microelectronics/Swift */ | |
57 | ||
58 | /* Ross Module versions */ | |
59 | #define ROSS_604_REV_CDE 0x0 /* revisions c, d, and e */ | |
60 | #define ROSS_604_REV_F 0x1 /* revision f */ | |
61 | #define ROSS_605 0xf /* revision a, a.1, and a.2 */ | |
62 | #define ROSS_605_REV_B 0xe /* revision b */ | |
63 | ||
64 | /* TI Viking Module versions */ | |
65 | #define VIKING_REV_12 0x1 /* Version 1.2 or SPARCclassic's CPU */ | |
66 | #define VIKING_REV_2 0x2 /* Version 2.1, 2.2, 2.3, and 2.4 */ | |
67 | #define VIKING_REV_30 0x3 /* Version 3.0 */ | |
68 | #define VIKING_REV_35 0x4 /* Version 3.5 */ | |
69 | ||
70 | /* LSI Logics. */ | |
71 | #define LSI_L64815 0x0 | |
72 | ||
73 | /* Fujitsu */ | |
74 | #define FMI_AURORA 0x4 /* MB8690x, a Swift module... */ | |
75 | #define FMI_TURBO 0x5 /* MB86907, a TurboSparc module... */ | |
76 | ||
77 | /* For multiprocessor support we need to be able to obtain the CPU id and | |
78 | * the MBUS Module id. | |
79 | */ | |
80 | ||
81 | /* The CPU ID is encoded in the trap base register, 20 bits to the left of | |
82 | * bit zero, with 2 bits being significant. | |
83 | */ | |
84 | #define TBR_ID_SHIFT 20 | |
85 | ||
3115624e | 86 | static inline int get_cpuid(void) |
1da177e4 LT |
87 | { |
88 | register int retval; | |
89 | __asm__ __volatile__("rd %%tbr, %0\n\t" | |
90 | "srl %0, %1, %0\n\t" : | |
91 | "=r" (retval) : | |
92 | "i" (TBR_ID_SHIFT)); | |
93 | return (retval & 3); | |
94 | } | |
95 | ||
3115624e | 96 | static inline int get_modid(void) |
1da177e4 LT |
97 | { |
98 | return (get_cpuid() | 0x8); | |
99 | } | |
100 | ||
101 | ||
102 | #endif /* !(_SPARC_MBUS_H) */ |