/* SPDX-License-Identifier: GPL-2.0 */ /* * mbus.h: Various defines for MBUS modules. * * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) */ #ifndef _SPARC_MBUS_H #define _SPARC_MBUS_H #include <asm/ross.h> /* HyperSparc stuff */ #include <asm/viking.h> /* Ugh, bug city... */ enum mbus_module { HyperSparc = 0, Swift_ok = 4, Swift_bad_c = 5, Swift_lots_o_bugs = 6, Tsunami = 7, Viking_12 = 8, Viking_2x = 9, Viking_30 = 10, Viking_35 = 11, Viking_new = 12, TurboSparc = 13, SRMMU_INVAL_MOD = 14, }; extern enum mbus_module srmmu_modtype; extern unsigned int viking_rev, swift_rev, cypress_rev; /* HW Mbus module bugs we have to deal with */ #define HWBUG_COPYBACK_BROKEN 0x00000001 #define HWBUG_ASIFLUSH_BROKEN 0x00000002 #define HWBUG_VACFLUSH_BITROT 0x00000004 #define HWBUG_KERN_ACCBROKEN 0x00000008 #define HWBUG_KERN_CBITBROKEN 0x00000010 #define HWBUG_MODIFIED_BITROT 0x00000020 #define HWBUG_PC_BADFAULT_ADDR 0x00000040 #define HWBUG_SUPERSCALAR_BAD 0x00000080 #define HWBUG_PACINIT_BITROT 0x00000100 /* First the module type values. To find out which you have, just load * the mmu control register from ASI_M_MMUREG alternate address space and * shift the value right 28 bits. */ /* IMPL field means the company which produced the chip. */ #define MBUS_VIKING 0x4 /* bleech, Texas Instruments Module */ #define MBUS_LSI 0x3 /* LSI Logics */ #define MBUS_ROSS 0x1 /* Ross is nice */ #define MBUS_FMI 0x0 /* Fujitsu Microelectronics/Swift */ /* Ross Module versions */ #define ROSS_604_REV_CDE 0x0 /* revisions c, d, and e */ #define ROSS_604_REV_F 0x1 /* revision f */ #define ROSS_605 0xf /* revision a, a.1, and a.2 */ #define ROSS_605_REV_B 0xe /* revision b */ /* TI Viking Module versions */ #define VIKING_REV_12 0x1 /* Version 1.2 or SPARCclassic's CPU */ #define VIKING_REV_2 0x2 /* Version 2.1, 2.2, 2.3, and 2.4 */ #define VIKING_REV_30 0x3 /* Version 3.0 */ #define VIKING_REV_35 0x4 /* Version 3.5 */ /* LSI Logics. */ #define LSI_L64815 0x0 /* Fujitsu */ #define FMI_AURORA 0x4 /* MB8690x, a Swift module... */ #define FMI_TURBO 0x5 /* MB86907, a TurboSparc module... */ /* For multiprocessor support we need to be able to obtain the CPU id and * the MBUS Module id. */ /* The CPU ID is encoded in the trap base register, 20 bits to the left of * bit zero, with 2 bits being significant. */ #define TBR_ID_SHIFT 20 static inline int get_cpuid(void) { register int retval; __asm__ __volatile__("rd %%tbr, %0\n\t" "srl %0, %1, %0\n\t" : "=r" (retval) : "i" (TBR_ID_SHIFT)); return (retval & 3); } static inline int get_modid(void) { return (get_cpuid() | 0x8); } #endif /* !(_SPARC_MBUS_H) */