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Differential D26035 Diff 83362 usr.sbin/bhyve/rtc.c

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usr.sbin/bhyve/rtc.c

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#include <time.h> #include <time.h>
#include <assert.h> #include <assert.h>
#include <machine/vmm.h> #include <machine/vmm.h>
#include <vmmapi.h> #include <vmmapi.h>
#include "acpi.h" #include "acpi.h"
#include "config.h"
#include "pci_lpc.h" #include "pci_lpc.h"
#include "rtc.h" #include "rtc.h"
#define IO_RTC 0x70 #define IO_RTC 0x70
#define RTC_LMEM_LSB 0x34 #define RTC_LMEM_LSB 0x34
#define RTC_LMEM_MSB 0x35 #define RTC_LMEM_MSB 0x35
#define RTC_HMEM_LSB 0x5b #define RTC_HMEM_LSB 0x5b
#define RTC_HMEM_SB 0x5c #define RTC_HMEM_SB 0x5c
#define RTC_HMEM_MSB 0x5d #define RTC_HMEM_MSB 0x5d
#define m_64KB (64*1024) #define m_64KB (64*1024)
#define m_16MB (16*1024*1024) #define m_16MB (16*1024*1024)
#define m_4GB (4ULL*1024*1024*1024) #define m_4GB (4ULL*1024*1024*1024)
/* /*
* Returns the current RTC time as number of seconds since 00:00:00 Jan 1, 1970 * Returns the current RTC time as number of seconds since 00:00:00 Jan 1, 1970
*/ */
static time_t static time_t
rtc_time(struct vmctx *ctx, int use_localtime) rtc_time(struct vmctx *ctx)
{ {
struct tm tm; struct tm tm;
time_t t; time_t t;
time(&t); time(&t);
if (use_localtime) { if (get_config_bool_default("rtc.use_localtime", true)) {
localtime_r(&t, &tm); localtime_r(&t, &tm);
t = timegm(&tm); t = timegm(&tm);
} }
return (t); return (t);
} }
void void
rtc_init(struct vmctx *ctx, int use_localtime) rtc_init(struct vmctx *ctx)
{ {
size_t himem; size_t himem;
size_t lomem; size_t lomem;
int err; int err;
/* XXX init diag/reset code/equipment/checksum ? */ /* XXX init diag/reset code/equipment/checksum ? */
/* /*
Show All 11 Linesrtc_init(struct vmctx *ctx)
himem = vm_get_highmem_size(ctx) / m_64KB; himem = vm_get_highmem_size(ctx) / m_64KB;
err = vm_rtc_write(ctx, RTC_HMEM_LSB, himem); err = vm_rtc_write(ctx, RTC_HMEM_LSB, himem);
assert(err == 0); assert(err == 0);
err = vm_rtc_write(ctx, RTC_HMEM_SB, himem >> 8); err = vm_rtc_write(ctx, RTC_HMEM_SB, himem >> 8);
assert(err == 0); assert(err == 0);
err = vm_rtc_write(ctx, RTC_HMEM_MSB, himem >> 16); err = vm_rtc_write(ctx, RTC_HMEM_MSB, himem >> 16);
assert(err == 0); assert(err == 0);
err = vm_rtc_settime(ctx, rtc_time(ctx, use_localtime)); err = vm_rtc_settime(ctx, rtc_time(ctx));
assert(err == 0); assert(err == 0);
} }
static void static void
rtc_dsdt(void) rtc_dsdt(void)
{ {
dsdt_line(""); dsdt_line("");
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