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1/*
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
14enum 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
32extern enum mbus_module srmmu_modtype;
33extern 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/* First the module type values. To find out which you have, just load
47 * the mmu control register from ASI_M_MMUREG alternate address space and
48 * shift the value right 28 bits.
49 */
50/* IMPL field means the company which produced the chip. */
51#define MBUS_VIKING 0x4 /* bleech, Texas Instruments Module */
52#define MBUS_LSI 0x3 /* LSI Logics */
53#define MBUS_ROSS 0x1 /* Ross is nice */
54#define MBUS_FMI 0x0 /* Fujitsu Microelectronics/Swift */
55
56/* Ross Module versions */
57#define ROSS_604_REV_CDE 0x0 /* revisions c, d, and e */
58#define ROSS_604_REV_F 0x1 /* revision f */
59#define ROSS_605 0xf /* revision a, a.1, and a.2 */
60#define ROSS_605_REV_B 0xe /* revision b */
61
62/* TI Viking Module versions */
63#define VIKING_REV_12 0x1 /* Version 1.2 or SPARCclassic's CPU */
64#define VIKING_REV_2 0x2 /* Version 2.1, 2.2, 2.3, and 2.4 */
65#define VIKING_REV_30 0x3 /* Version 3.0 */
66#define VIKING_REV_35 0x4 /* Version 3.5 */
67
68/* LSI Logics. */
69#define LSI_L64815 0x0
70
71/* Fujitsu */
72#define FMI_AURORA 0x4 /* MB8690x, a Swift module... */
73#define FMI_TURBO 0x5 /* MB86907, a TurboSparc module... */
74
75/* For multiprocessor support we need to be able to obtain the CPU id and
76 * the MBUS Module id.
77 */
78
79/* The CPU ID is encoded in the trap base register, 20 bits to the left of
80 * bit zero, with 2 bits being significant.
81 */
82#define TBR_ID_SHIFT 20
83
84static inline int get_cpuid(void)
85{
86 register int retval;
87 __asm__ __volatile__("rd %%tbr, %0\n\t"
88 "srl %0, %1, %0\n\t" :
89 "=r" (retval) :
90 "i" (TBR_ID_SHIFT));
91 return (retval & 3);
92}
93
94static inline int get_modid(void)
95{
96 return (get_cpuid() | 0x8);
97}
98
99
100#endif /* !(_SPARC_MBUS_H) */