File: /usr/src/linux/include/asm-sparc/mbus.h
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
86 extern __inline__ int get_cpuid(void)
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
96 extern __inline__ int get_modid(void)
97 {
98 return (get_cpuid() | 0x8);
99 }
100
101
102 #endif /* !(_SPARC_MBUS_H) */
103