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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * mbus.h: Various defines for MBUS modules.
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8#ifndef _SPARC_MBUS_H
9#define _SPARC_MBUS_H
10
11#include <asm/ross.h> /* HyperSparc stuff */
12#include <asm/viking.h> /* Ugh, bug city... */
13
14enum mbus_module {
15 HyperSparc = 0,
16 Swift_ok = 4,
17 Swift_bad_c = 5,
18 Swift_lots_o_bugs = 6,
19 Tsunami = 7,
20 Viking_12 = 8,
21 Viking_2x = 9,
22 Viking_30 = 10,
23 Viking_35 = 11,
24 Viking_new = 12,
25 TurboSparc = 13,
26 SRMMU_INVAL_MOD = 14,
27};
28
29extern enum mbus_module srmmu_modtype;
30extern unsigned int viking_rev, swift_rev, cypress_rev;
31
32/* HW Mbus module bugs we have to deal with */
33#define HWBUG_COPYBACK_BROKEN 0x00000001
34#define HWBUG_ASIFLUSH_BROKEN 0x00000002
35#define HWBUG_VACFLUSH_BITROT 0x00000004
36#define HWBUG_KERN_ACCBROKEN 0x00000008
37#define HWBUG_KERN_CBITBROKEN 0x00000010
38#define HWBUG_MODIFIED_BITROT 0x00000020
39#define HWBUG_PC_BADFAULT_ADDR 0x00000040
40#define HWBUG_SUPERSCALAR_BAD 0x00000080
41#define HWBUG_PACINIT_BITROT 0x00000100
42
43/* First the module type values. To find out which you have, just load
44 * the mmu control register from ASI_M_MMUREG alternate address space and
45 * shift the value right 28 bits.
46 */
47/* IMPL field means the company which produced the chip. */
48#define MBUS_VIKING 0x4 /* bleech, Texas Instruments Module */
49#define MBUS_LSI 0x3 /* LSI Logics */
50#define MBUS_ROSS 0x1 /* Ross is nice */
51#define MBUS_FMI 0x0 /* Fujitsu Microelectronics/Swift */
52
53/* Ross Module versions */
54#define ROSS_604_REV_CDE 0x0 /* revisions c, d, and e */
55#define ROSS_604_REV_F 0x1 /* revision f */
56#define ROSS_605 0xf /* revision a, a.1, and a.2 */
57#define ROSS_605_REV_B 0xe /* revision b */
58
59/* TI Viking Module versions */
60#define VIKING_REV_12 0x1 /* Version 1.2 or SPARCclassic's CPU */
61#define VIKING_REV_2 0x2 /* Version 2.1, 2.2, 2.3, and 2.4 */
62#define VIKING_REV_30 0x3 /* Version 3.0 */
63#define VIKING_REV_35 0x4 /* Version 3.5 */
64
65/* LSI Logics. */
66#define LSI_L64815 0x0
67
68/* Fujitsu */
69#define FMI_AURORA 0x4 /* MB8690x, a Swift module... */
70#define FMI_TURBO 0x5 /* MB86907, a TurboSparc module... */
71
72/* For multiprocessor support we need to be able to obtain the CPU id and
73 * the MBUS Module id.
74 */
75
76/* The CPU ID is encoded in the trap base register, 20 bits to the left of
77 * bit zero, with 2 bits being significant.
78 */
79#define TBR_ID_SHIFT 20
80
81static inline int get_cpuid(void)
82{
83 register int retval;
84 __asm__ __volatile__("rd %%tbr, %0\n\t"
85 "srl %0, %1, %0\n\t" :
86 "=r" (retval) :
87 "i" (TBR_ID_SHIFT));
88 return (retval & 3);
89}
90
91static inline int get_modid(void)
92{
93 return (get_cpuid() | 0x8);
94}
95
96
97#endif /* !(_SPARC_MBUS_H) */
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/viking.h> /* Ugh, bug city... */
12
13enum mbus_module {
14 HyperSparc = 0,
15 Swift_ok = 4,
16 Swift_bad_c = 5,
17 Swift_lots_o_bugs = 6,
18 Tsunami = 7,
19 Viking_12 = 8,
20 Viking_2x = 9,
21 Viking_30 = 10,
22 Viking_35 = 11,
23 Viking_new = 12,
24 TurboSparc = 13,
25 SRMMU_INVAL_MOD = 14,
26};
27
28extern enum mbus_module srmmu_modtype;
29extern unsigned int viking_rev, swift_rev, cypress_rev;
30
31/* HW Mbus module bugs we have to deal with */
32#define HWBUG_COPYBACK_BROKEN 0x00000001
33#define HWBUG_ASIFLUSH_BROKEN 0x00000002
34#define HWBUG_VACFLUSH_BITROT 0x00000004
35#define HWBUG_KERN_ACCBROKEN 0x00000008
36#define HWBUG_KERN_CBITBROKEN 0x00000010
37#define HWBUG_MODIFIED_BITROT 0x00000020
38#define HWBUG_PC_BADFAULT_ADDR 0x00000040
39#define HWBUG_SUPERSCALAR_BAD 0x00000080
40#define HWBUG_PACINIT_BITROT 0x00000100
41
42/* First the module type values. To find out which you have, just load
43 * the mmu control register from ASI_M_MMUREG alternate address space and
44 * shift the value right 28 bits.
45 */
46/* IMPL field means the company which produced the chip. */
47#define MBUS_VIKING 0x4 /* bleech, Texas Instruments Module */
48#define MBUS_LSI 0x3 /* LSI Logics */
49#define MBUS_ROSS 0x1 /* Ross is nice */
50#define MBUS_FMI 0x0 /* Fujitsu Microelectronics/Swift */
51
52/* Ross Module versions */
53#define ROSS_604_REV_CDE 0x0 /* revisions c, d, and e */
54#define ROSS_604_REV_F 0x1 /* revision f */
55#define ROSS_605 0xf /* revision a, a.1, and a.2 */
56#define ROSS_605_REV_B 0xe /* revision b */
57
58/* TI Viking Module versions */
59#define VIKING_REV_12 0x1 /* Version 1.2 or SPARCclassic's CPU */
60#define VIKING_REV_2 0x2 /* Version 2.1, 2.2, 2.3, and 2.4 */
61#define VIKING_REV_30 0x3 /* Version 3.0 */
62#define VIKING_REV_35 0x4 /* Version 3.5 */
63
64/* LSI Logics. */
65#define LSI_L64815 0x0
66
67/* Fujitsu */
68#define FMI_AURORA 0x4 /* MB8690x, a Swift module... */
69#define FMI_TURBO 0x5 /* MB86907, a TurboSparc module... */
70
71/* For multiprocessor support we need to be able to obtain the CPU id and
72 * the MBUS Module id.
73 */
74
75/* The CPU ID is encoded in the trap base register, 20 bits to the left of
76 * bit zero, with 2 bits being significant.
77 */
78#define TBR_ID_SHIFT 20
79
80static inline int get_cpuid(void)
81{
82 register int retval;
83 __asm__ __volatile__("rd %%tbr, %0\n\t"
84 "srl %0, %1, %0\n\t" :
85 "=r" (retval) :
86 "i" (TBR_ID_SHIFT));
87 return (retval & 3);
88}
89
90static inline int get_modid(void)
91{
92 return (get_cpuid() | 0x8);
93}
94
95
96#endif /* !(_SPARC_MBUS_H) */