/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell and Rick Macklem.
*
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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.
*
* @(#)cpu.h 8.4 (Berkeley) 1/4/94
*/
#ifndef _CPU_H_
#define _CPU_H_
/*
* Exported definitions unique to NetBSD/mips cpu support.
*/
#ifdef _LOCORE
#error Use assym.h to get definitions from <mips/cpu.h>
#endif
struct cpu_info {
struct cpu_data ci_data; /* MI per-cpu data */
void *ci_nmi_stack; /* NMI exception stack */
struct cpu_softc *ci_softc; /* chip-dependent hook */
device_t ci_dev; /* owning device */
cpuid_t ci_cpuid; /* Machine-level identifier */
u_long ci_cctr_freq; /* cycle counter frequency */
u_long ci_cpu_freq; /* CPU frequency */
u_long ci_cycles_per_hz; /* CPU freq / hz */
u_long ci_divisor_delay; /* for delay/DELAY */
u_long ci_divisor_recip; /* unused, for obsolete microtime(9) */
struct lwp *ci_curlwp; /* currently running lwp */
struct lwp *ci_onproc; /* current user LWP / kthread */
volatile int ci_want_resched; /* user preemption pending */
int ci_mtx_count; /* negative count of held mutexes */
int ci_mtx_oldspl; /* saved SPL value */
int ci_idepth; /* hardware interrupt depth */
int ci_cpl; /* current [interrupt] priority level */
uint32_t ci_next_cp0_clk_intr; /* for hard clock intr scheduling */
struct evcnt ci_ev_count_compare; /* hard clock intr counter */
struct evcnt ci_ev_count_compare_missed; /* hard clock miss counter */
struct lwp *ci_softlwps[SOFTINT_COUNT];
volatile u_int ci_softints;
struct evcnt ci_ev_fpu_loads; /* fpu load counter */
struct evcnt ci_ev_fpu_saves; /* fpu save counter */
struct evcnt ci_ev_dsp_loads; /* dsp load counter */
struct evcnt ci_ev_dsp_saves; /* dsp save counter */
struct evcnt ci_ev_tlbmisses;
/*
* Per-cpu pmap information
*/
int ci_tlb_slot; /* reserved tlb entry for cpu_info */
u_int ci_pmap_asid_cur; /* current ASID */
struct pmap_tlb_info *ci_tlb_info; /* tlb information for this cpu */
union pmap_segtab *ci_pmap_segtabs[2];
#define ci_pmap_user_segtab ci_pmap_segtabs[0]
#define ci_pmap_kern_segtab ci_pmap_segtabs[1]
#ifdef _LP64
union pmap_segtab *ci_pmap_seg0tabs[2];
#define ci_pmap_user_seg0tab ci_pmap_seg0tabs[0]
#define ci_pmap_kern_seg0tab ci_pmap_seg0tabs[1]
#endif
vaddr_t ci_pmap_srcbase; /* starting VA of ephemeral src space */
vaddr_t ci_pmap_dstbase; /* starting VA of ephemeral dst space */
u_int ci_cpuwatch_count; /* number of watchpoints on this CPU */
cpu_watchpoint_t ci_cpuwatch_tab[CPUWATCH_MAX];
#ifdef MULTIPROCESSOR
volatile u_long ci_flags;
volatile uint64_t ci_request_ipis;
/* bitmask of IPIs requested */
/* use on chips where hw cannot pass tag */
uint64_t ci_active_ipis; /* bitmask of IPIs being serviced */
uint32_t ci_ksp_tlb_slot; /* tlb entry for kernel stack */
struct evcnt ci_evcnt_all_ipis; /* aggregated IPI counter */
struct evcnt ci_evcnt_per_ipi[NIPIS]; /* individual IPI counters*/
struct evcnt ci_evcnt_synci_activate_rqst;
struct evcnt ci_evcnt_synci_onproc_rqst;
struct evcnt ci_evcnt_synci_deferred_rqst;
struct evcnt ci_evcnt_synci_ipi_rqst;
#define CPUF_PRIMARY __BIT(0) /* CPU is primary CPU */
#define CPUF_PRESENT __BIT(1) /* CPU is present */
#define CPUF_RUNNING __BIT(2) /* CPU is running */
#define CPUF_PAUSED __BIT(3) /* CPU is paused */
#define CPUF_USERPMAP __BIT(5) /* CPU has a user pmap activated */
kcpuset_t *ci_shootdowncpus;
kcpuset_t *ci_multicastcpus;
kcpuset_t *ci_watchcpus;
kcpuset_t *ci_ddbcpus;
#endif
#if defined(GPROF) && defined(MULTIPROCESSOR)
struct gmonparam *ci_gmon; /* MI per-cpu GPROF */
#endif
};
#endif /* _KERNEL || _KMEMUSER */
#ifdef _KERNEL
#ifdef MULTIPROCESSOR
#define CPU_INFO_ITERATOR int
#define CPU_INFO_FOREACH(cii, ci) \
cii = 0, ci = &cpu_info_store; \
ci != NULL; \
cii++, \
ncpu ? (ci = cpu_infos[cii]) \
: (ci = NULL)
#else
#define CPU_INFO_ITERATOR int __unused
#define CPU_INFO_FOREACH(cii, ci) \
ci = &cpu_info_store; ci != NULL; ci = NULL
#endif
/* Note: must be kept in sync with -ffixed-?? Makefile.mips. */
// MIPS_CURLWP moved to <mips/regdef.h>
#define MIPS_CURLWP_QUOTED "$24"
#define MIPS_CURLWP_LABEL _L_T8
#define MIPS_CURLWP_REG _R_T8
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
/*
* Send an inter-processor interrupt to each other CPU (excludes curcpu())
*/
void cpu_broadcast_ipi(int);
/*
* Send an inter-processor interrupt to CPUs in kcpuset (excludes curcpu())
*/
void cpu_multicast_ipi(const kcpuset_t *, int);
/*
* Send an inter-processor interrupt to another CPU.
*/
int cpu_send_ipi(struct cpu_info *, int);
/*
* cpu_intr(ppl, pc, status); (most state needed by clockframe)
*/
void cpu_intr(int, vaddr_t, uint32_t);
/*
* Arguments to hardclock and gatherstats encapsulate the previous
* machine state in an opaque clockframe.
*/
struct clockframe {
vaddr_t pc; /* program counter at time of interrupt */
uint32_t sr; /* status register at time of interrupt */
bool intr; /* interrupted a interrupt */
};
/*
* A port must provide CLKF_USERMODE() for use in machine-independent code.
* These differ on r4000 and r3000 systems; provide them in the
* port-dependent file that includes this one, using the macros below.
*/
uint32_t cpu_clkf_usermode_mask(void);
/*
* Notify the current lwp (l) that it has a signal pending,
* process as soon as possible.
*/
void cpu_signotify(struct lwp *);
/*
* Give a profiling tick to the current process when the user profiling
* buffer pages are invalid. On the MIPS, request an ast to send us
* through trap, marking the proc as needing a profiling tick.
*/
void cpu_need_proftick(struct lwp *);
