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/* $OpenBSD: cpuvar.h,v 1.19 2010/09/28 20:27:55 miod Exp $ */
/* $NetBSD: cpuvar.h,v 1.4 1997/07/06 21:14:25 pk Exp $ */
/*
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SPARC_CPUVAR_H
#define _SPARC_CPUVAR_H
#include <sys/device.h>
#include <sys/sched.h>
#include <sparc/sparc/cache.h> /* for cacheinfo */
/*
* CPU/MMU module information.
* There is one of these for each "mainline" CPU module we support.
* The information contained in the structure is used only during
* auto-configuration of the CPUs; some fields are copied into the
* per-cpu data structure (cpu_softc) for easy access during normal
* operation.
*/
struct cpu_softc;
struct module_info {
int cpu_type;
enum vactype vactype;
void (*cpu_match)(struct cpu_softc *, struct module_info *, int);
void (*getcacheinfo)(struct cpu_softc *sc, int node);
void (*hotfix)(struct cpu_softc *);
void (*mmu_enable)(void);
void (*cache_enable)(void);
int ncontext; /* max. # of contexts (we use) */
void (*get_syncflt)(void);
int (*get_asyncflt)(u_int *, u_int *);
void (*cache_flush)(caddr_t, u_int);
void (*vcache_flush_page)(int);
void (*vcache_flush_segment)(int, int);
void (*vcache_flush_region)(int);
void (*vcache_flush_context)(void);
void (*pcache_flush_line)(int, int);
void (*pure_vcache_flush)(void);
void (*cache_flush_all)(void);
void (*memerr)(unsigned, u_int, u_int, struct trapframe *);
};
struct cpu_softc;
struct cpu_info {
struct cpu_softc *ci_softc;
struct proc *ci_curproc;
struct cpu_info *ci_next;
struct schedstate_percpu ci_schedstate;
u_int32_t ci_randseed;
#ifdef DIAGNOSTIC
int ci_mutex_level;
#endif
};
#define curcpu() (&cpuinfo.ci)
#define cpu_number() (cpuinfo.mid)
#define CPU_IS_PRIMARY(ci) ((ci)->ci_softc->master)
#define CPU_INFO_ITERATOR int
#define CPU_INFO_FOREACH(cii, ci) \
for (cii = 0, ci = curcpu(); ci != NULL; ci = ci->ci_next)
#define CPU_INFO_UNIT(ci) ((ci)->ci_softc ? (ci)->ci_softc->dv.dv_unit : 0)
#define MAXCPUS 1
#define cpu_unidle(ci)
/*
* The cpu_softc structure. This structure maintains information about one
* currently installed CPU (there may be several of these if the machine
* supports multiple CPUs, as on some Sun4m architectures). The information
* in this structure supersedes the old "cpumod", "mmumod", and similar
* fields.
*/
struct cpu_softc {
struct device dv; /* generic device info */
struct cpu_info ci;
int node; /* PROM node for this CPU */
/* CPU information */
char *cpu_name; /* CPU model */
int cpu_impl; /* CPU implementation code */
int cpu_vers; /* CPU version code */
int mmu_impl; /* MMU implementation code */
int mmu_vers; /* MMU version code */
int master; /* 1 if this is bootup CPU */
int mid; /* Module ID for MP systems */
int mbus; /* 1 if CPU is on MBus */
int mxcc; /* 1 if a MBus-level MXCC is present */
caddr_t mailbox; /* VA of CPU's mailbox */
int mmu_ncontext; /* Number of contexts supported */
int mmu_nregion; /* Number of regions supported */
int mmu_nsegment; /* [4/4c] Segments */
int mmu_npmeg; /* [4/4c] Pmegs */
int sun4_mmu3l; /* [4]: 3-level MMU present */
#if defined(SUN4_MMU3L)
#define HASSUN4_MMU3L (cpuinfo.sun4_mmu3l)
#else
#define HASSUN4_MMU3L (0)
#endif
/* Context administration */
int *ctx_tbl; /* [4m] SRMMU-edible context table */
union ctxinfo *ctxinfo;
union ctxinfo *ctx_freelist; /* context free list */
int ctx_kick; /* allocation rover when none free */
int ctx_kickdir; /* ctx_kick roves both directions */
/* MMU tables that map `cpuinfo'' on each CPU */
int *L1_ptps; /* XXX */
/* XXX - of these, we currently use only cpu_type */
int arch; /* Architecture: CPU_SUN4x */
int class; /* Class: SuperSPARC, microSPARC... */
int classlvl; /* Iteration in class: 1, 2, etc. */
int classsublvl; /* stepping in class (version) */
int cpu_type; /* Type: see CPUTYP_xxx below */
int hz; /* Clock speed */
/* Cache information */
struct cacheinfo cacheinfo; /* see cache.h */
/* FPU information */
int fpupresent; /* true if FPU is present */
int fpuvers; /* FPU revision */
/* various flags to workaround anomalies in chips */
int flags; /* see CPUFLG_xxx, below */
/*
* The following pointers point to processes that are somehow
* associated with this CPU--running on it, using its FPU,
* etc.
*
* XXXMP: much more needs to go here
*/
struct proc *fpproc; /* FPU owner */
/*
* The following are function pointers to do interesting CPU-dependent
* things without having to do type-tests all the time
*/
/* bootup things: access to physical memory */
u_int (*read_physmem)(u_int addr, int space);
void (*write_physmem)(u_int addr, u_int data);
void (*cache_tablewalks)(void);
void (*mmu_enable)(void);
void (*hotfix)(struct cpu_softc *);
/* locore defined: */
void (*get_syncflt)(void); /* Not C-callable */
int (*get_asyncflt)(u_int *, u_int *);
/* Synchronous Fault Status; temporary storage */
struct {
int sfsr;
int sfva;
} syncfltdump;
/* Cache handling functions */
void (*cache_enable)(void);
void (*cache_flush)(caddr_t, u_int);
void (*vcache_flush_page)(int);
void (*vcache_flush_segment)(int, int);
void (*vcache_flush_region)(int);
void (*vcache_flush_context)(void);
void (*pcache_flush_line)(int, int);
void (*pure_vcache_flush)(void);
void (*cache_flush_all)(void);
#ifdef SUN4M
/* hardware-assisted block operation routines */
void (*hwbcopy)(const void *from, void *to, size_t len);
void (*hwbzero)(void *buf, size_t len);
/* routine to clear mbus-sbus buffers */
void (*mbusflush)(void);
#endif
/*
* Memory error handler; parity errors, unhandled NMIs and other
* unrecoverable faults end up here.
*/
void (*memerr)(unsigned, u_int, u_int, struct trapframe *);
/* XXX: Add more here! */
};
/*
* CPU types. When nonzero, these enable system-specific behaviour.
* The general form is
* CPUTYP_proctype_bustype_cachetype_etc_etc
*/
#define CPUTYP_UNKNOWN 0
/* sun4 models */
#define CPUTYP_4_100 1 /* Sun4/100 */
#define CPUTYP_4_200 2 /* Sun4/200 */
#define CPUTYP_4_300 3 /* Sun4/300 */
#define CPUTYP_4_400 4 /* Sun4/400 */
/* rough sun4m families; not really used */
#define CPUTYP_SS1_MBUS_MXCC 21 /* SuperSPARC-I, MBus, MXCC (SS10) */
#define CPUTYP_SS1_MBUS_NOMXCC 23 /* SuperSPARC-I, on MBus w/o MXCC */
#define CPUTYP_MS2 24 /* MicroSPARC-2 */
#define CPUTYP_MS1 25 /* MicroSPARC-1 */
#define CPUTYP_HS_MBUS 26 /* MBus-based HyperSPARC */
#define CPUTYP_CYPRESS 27 /* MBus-based Cypress */
/*
* CPU flags
*/
#define CPUFLG_CACHEPAGETABLES 0x1 /* caching pagetables OK on Sun4m */
#define CPUFLG_CACHEIOMMUTABLES 0x2 /* caching IOMMU translations OK */
#define CPUFLG_CACHEDVMA 0x4 /* DVMA goes through cache */
#define CPUFLG_SUN4CACHEBUG 0x8 /* trap page can't be cached */
#define CPUFLG_CACHE_MANDATORY 0x10 /* if cache is on, don't use
uncached access */
/*
* Related function prototypes
*/
void getcpuinfo(struct cpu_softc *sc, int node);
void mmu_install_tables(struct cpu_softc *);
void pmap_alloc_cpu(struct cpu_softc *);
#define cpuinfo (*(struct cpu_softc *)CPUINFO_VA)
#endif /* _SPARC_CPUVAR_H */
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