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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2016 Joyent, Inc.
*/
#include <sys/asm_linkage.h>
#include <sys/asm_misc.h>
#include <sys/param.h>
#include <sys/comm_page.h>
#include <sys/tsc.h>
#if defined(__lint)
hrtime_t tsc_last;
hrtime_t tsc_resume_cap;
hrtime_t tsc_hrtime_base;
uint32_t tsc_max_delta;
volatile uint32_t hres_lock;
uint32_t tsc_type;
uint32_t nsec_scale;
int64_t hrestime_adj;
hrtime_t hres_last_tick;
uint32_t tsc_ncpu;
volatile timestruc_t hrestime;
hrtime_t tsc_sync_tick_delta[NCPU];
comm_page_t comm_page;
#else /* defined(__lint) */
#include "assym.h"
/*
* x86 Comm Page
*
* This is the definition for the comm page on x86. The purpose of this struct
* is to consolidate certain pieces of kernel state into one contiguous section
* of memory in order for it to be exposed (read-only) to userspace. The
* struct contents are defined by hand so that member variables will maintain
* their original symbols for use throughout the rest of the kernel. This
* layout must exactly match the C definition of comm_page_t.
* See: "uts/i86pc/sys/comm_page.h"
*/
.data
DGDEF3(comm_page, COMM_PAGE_S_SIZE, 4096)
DGDEF2(tsc_last, 8)
.fill 1, 8, 0
DGDEF2(tsc_hrtime_base, 8)
.fill 1, 8, 0
DGDEF2(tsc_resume_cap, 8)
.fill 1, 8, 0
DGDEF2(tsc_type, 4);
.fill 1, 4, _CONST(TSC_RDTSC_CPUID)
DGDEF2(tsc_max_delta, 4);
.fill 1, 4, 0
DGDEF2(hres_lock, 4);
.fill 1, 4, 0
DGDEF2(nsec_scale, 4);
.fill 1, 4, 0
DGDEF2(hrestime_adj, 8)
.fill 1, 8, 0
DGDEF2(hres_last_tick, 8)
.fill 1, 8, 0
DGDEF2(tsc_ncpu, 4)
.fill 1, 4, 0
/* _cp_pad */
.fill 1, 4, 0
DGDEF2(hrestime, _MUL(2, 8))
.fill 2, 8, 0
DGDEF2(tsc_sync_tick_delta, _MUL(NCPU, 8))
.fill _CONST(NCPU), 8, 0
/* pad out the rest of the page from the struct end */
.fill _CONST(COMM_PAGE_SIZE - COMM_PAGE_S_SIZE), 1, 0
#endif /* defined(__lint) */
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