4  * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
25 #include "system/reset.h"
29 /* Tick Timer global state to allow all cores to be in sync */
40     or1k_timer->ttcr = val;  in cpu_openrisc_count_set()
41     or1k_timer->ttcr_offset = val;  in cpu_openrisc_count_set()
42     or1k_timer->clk_offset = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);  in cpu_openrisc_count_set()
47     return or1k_timer->ttcr;  in cpu_openrisc_count_get()
55     if (!cpu->env.is_counting) {  in cpu_openrisc_count_update()
59     or1k_timer->ttcr = or1k_timer->ttcr_offset +  in cpu_openrisc_count_update()
60         DIV_ROUND_UP(now - or1k_timer->clk_offset, TIMER_PERIOD);  in cpu_openrisc_count_update()
69     if (!cpu->env.is_counting) {  in cpu_openrisc_timer_update()
76     if ((cpu->env.ttmr & TTMR_TP) <= (or1k_timer->ttcr & TTMR_TP)) {  in cpu_openrisc_timer_update()
77         wait = TTMR_TP - (or1k_timer->ttcr & TTMR_TP) + 1;  in cpu_openrisc_timer_update()
78         wait += cpu->env.ttmr & TTMR_TP;  in cpu_openrisc_timer_update()
80         wait = (cpu->env.ttmr & TTMR_TP) - (or1k_timer->ttcr & TTMR_TP);  in cpu_openrisc_timer_update()
83     timer_mod(cpu->env.timer, next);  in cpu_openrisc_timer_update()
88     cpu->env.is_counting = 1;  in cpu_openrisc_count_start()
94     timer_del(cpu->env.timer);  in cpu_openrisc_count_stop()
96     cpu->env.is_counting = 0;  in cpu_openrisc_count_stop()
103     if ((cpu->env.ttmr & TTMR_IE) &&  in openrisc_timer_cb()
104          timer_expired(cpu->env.timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL))) {  in openrisc_timer_cb()
107         cpu->env.ttmr |= TTMR_IP;  in openrisc_timer_cb()
108         cs->interrupt_request |= CPU_INTERRUPT_TIMER;  in openrisc_timer_cb()
111     switch (cpu->env.ttmr & TTMR_M) {  in openrisc_timer_cb()
116         or1k_timer->ttcr_offset -= (cpu->env.ttmr & TTMR_TP);  in openrisc_timer_cb()
129 /* Reset the per CPU counter state. */
134     if (cpu->env.is_counting) {  in openrisc_count_reset()
137     cpu->env.ttmr = 0x00000000;  in openrisc_count_reset()
140 /* Reset the global timer state. */
161     cpu->env.timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &openrisc_timer_cb, cpu);  in cpu_openrisc_clock_init()