| atrtc.c (12941) | atrtc.c (13000) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz and Don Ahn. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz and Don Ahn. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 |
| 37 * $Id: clock.c,v 1.41 1995/12/14 23:01:51 bde Exp $ | 37 * $Id: clock.c,v 1.42 1995/12/20 20:57:33 wollman Exp $ |
| 38 */ 39 40/* 41 * inittodr, settodr and support routines written 42 * by Christoph Robitschko <chmr@edvz.tu-graz.ac.at> 43 * 44 * reintroduced and updated by Chris Stenton <chris@gnome.co.uk> 8/10/94 45 */ --- 42 unchanged lines hidden (view full) --- 88 * TIMER0_LATCH_COUNT so that we don't have to worry about underflow in 89 * the calculation of timer0_overflow_threshold. 90 */ 91#define TIMER0_MIN_MAX_COUNT TIMER_DIV(20000) 92 93int adjkerntz = 0; /* offset from CMOS clock */ 94int disable_rtc_set = 0; /* disable resettodr() if != 0 */ 95u_int idelayed; | 38 */ 39 40/* 41 * inittodr, settodr and support routines written 42 * by Christoph Robitschko <chmr@edvz.tu-graz.ac.at> 43 * 44 * reintroduced and updated by Chris Stenton <chris@gnome.co.uk> 8/10/94 45 */ --- 42 unchanged lines hidden (view full) --- 88 * TIMER0_LATCH_COUNT so that we don't have to worry about underflow in 89 * the calculation of timer0_overflow_threshold. 90 */ 91#define TIMER0_MIN_MAX_COUNT TIMER_DIV(20000) 92 93int adjkerntz = 0; /* offset from CMOS clock */ 94int disable_rtc_set = 0; /* disable resettodr() if != 0 */ 95u_int idelayed; |
| 96#ifdef I586_CPU | 96#if defined(I586_CPU) || defined(I686_CPU) |
| 97unsigned i586_ctr_rate; 98long long i586_ctr_bias; 99long long i586_last_tick; 100#endif 101u_int stat_imask = SWI_CLOCK_MASK; 102int timer0_max_count; 103u_int timer0_overflow_threshold; 104u_int timer0_prescaler_count; --- 170 unchanged lines hidden (view full) --- 275 /* select timer0 and latch counter value */ 276 outb(TIMER_MODE, TIMER_SEL0); 277 low = inb(TIMER_CNTR0); 278 high = inb(TIMER_CNTR0); 279 enable_intr(); 280 return ((high << 8) | low); 281} 282 | 97unsigned i586_ctr_rate; 98long long i586_ctr_bias; 99long long i586_last_tick; 100#endif 101u_int stat_imask = SWI_CLOCK_MASK; 102int timer0_max_count; 103u_int timer0_overflow_threshold; 104u_int timer0_prescaler_count; --- 170 unchanged lines hidden (view full) --- 275 /* select timer0 and latch counter value */ 276 outb(TIMER_MODE, TIMER_SEL0); 277 low = inb(TIMER_CNTR0); 278 high = inb(TIMER_CNTR0); 279 enable_intr(); 280 return ((high << 8) | low); 281} 282 |
| 283#ifdef I586_CPU | 283#if defined(I586_CPU) || defined(I686_CPU) |
| 284/* 285 * Figure out how fast the cyclecounter runs. This must be run with 286 * clock interrupts disabled, but with the timer/counter programmed 287 * and running. 288 */ 289void 290calibrate_cyclecounter(void) 291{ --- 272 unchanged lines hidden (view full) --- 564 stathz = RTC_NOPROFRATE; 565 profhz = RTC_PROFRATE; 566 567 /* Finish initializing 8253 timer 0. */ 568 register_intr(/* irq */ 0, /* XXX id */ 0, /* flags */ 0, 569 /* XXX */ (inthand2_t *)clkintr, &clk_imask, 570 /* unit */ 0); 571 INTREN(IRQ0); | 284/* 285 * Figure out how fast the cyclecounter runs. This must be run with 286 * clock interrupts disabled, but with the timer/counter programmed 287 * and running. 288 */ 289void 290calibrate_cyclecounter(void) 291{ --- 272 unchanged lines hidden (view full) --- 564 stathz = RTC_NOPROFRATE; 565 profhz = RTC_PROFRATE; 566 567 /* Finish initializing 8253 timer 0. */ 568 register_intr(/* irq */ 0, /* XXX id */ 0, /* flags */ 0, 569 /* XXX */ (inthand2_t *)clkintr, &clk_imask, 570 /* unit */ 0); 571 INTREN(IRQ0); |
| 572#ifdef I586_CPU | 572#if defined(I586_CPU) || defined(I686_CPU) |
| 573 /* 574 * Finish setting up anti-jitter measures. 575 */ 576 if (i586_ctr_rate) { 577 I586_CYCLECTR(i586_last_tick); 578 i586_ctr_bias = i586_last_tick; 579 } 580#endif --- 23 unchanged lines hidden --- | 573 /* 574 * Finish setting up anti-jitter measures. 575 */ 576 if (i586_ctr_rate) { 577 I586_CYCLECTR(i586_last_tick); 578 i586_ctr_bias = i586_last_tick; 579 } 580#endif --- 23 unchanged lines hidden --- |