59 static int timer_irq_state(AlteraTimer *t)  in timer_irq_state()  argument
61     bool irq = (t->regs[R_STATUS] & STATUS_TO) &&  in timer_irq_state()
62                (t->regs[R_CONTROL] & CONTROL_ITO);  in timer_irq_state()
69     AlteraTimer *t = opaque;  in timer_read()  local
76         r = t->regs[R_CONTROL] & (CONTROL_ITO | CONTROL_CONT);  in timer_read()
80         if (addr < ARRAY_SIZE(t->regs)) {  in timer_read()
81             r = t->regs[addr];  in timer_read()
92     AlteraTimer *t = opaque;  in timer_write()  local
95     int irqState = timer_irq_state(t);  in timer_write()
102         t->regs[R_STATUS] &= ~STATUS_TO;  in timer_write()
106         ptimer_transaction_begin(t->ptimer);  in timer_write()
107         t->regs[R_CONTROL] = value & (CONTROL_ITO | CONTROL_CONT);  in timer_write()
109             !(t->regs[R_STATUS] & STATUS_RUN)) {  in timer_write()
110             ptimer_run(t->ptimer, 1);  in timer_write()
111             t->regs[R_STATUS] |= STATUS_RUN;  in timer_write()
113         if ((value & CONTROL_STOP) && (t->regs[R_STATUS] & STATUS_RUN)) {  in timer_write()
114             ptimer_stop(t->ptimer);  in timer_write()
115             t->regs[R_STATUS] &= ~STATUS_RUN;  in timer_write()
117         ptimer_transaction_commit(t->ptimer);  in timer_write()
122         ptimer_transaction_begin(t->ptimer);  in timer_write()
123         t->regs[addr] = value & 0xFFFF;  in timer_write()
124         if (t->regs[R_STATUS] & STATUS_RUN) {  in timer_write()
125             ptimer_stop(t->ptimer);  in timer_write()
126             t->regs[R_STATUS] &= ~STATUS_RUN;  in timer_write()
128         tvalue = (t->regs[R_PERIODH] << 16) | t->regs[R_PERIODL];  in timer_write()
129         ptimer_set_limit(t->ptimer, tvalue + 1, 1);  in timer_write()
130         ptimer_transaction_commit(t->ptimer);  in timer_write()
135         count = ptimer_get_count(t->ptimer);  in timer_write()
136         t->regs[R_SNAPL] = count & 0xFFFF;  in timer_write()
137         t->regs[R_SNAPH] = count >> 16;  in timer_write()
144     if (irqState != timer_irq_state(t)) {  in timer_write()
145         qemu_set_irq(t->irq, timer_irq_state(t));  in timer_write()
161     AlteraTimer *t = opaque;  in timer_hit()  local
162     const uint64_t tvalue = (t->regs[R_PERIODH] << 16) | t->regs[R_PERIODL];  in timer_hit()
164     t->regs[R_STATUS] |= STATUS_TO;  in timer_hit()
166     ptimer_set_limit(t->ptimer, tvalue + 1, 1);  in timer_hit()
168     if (!(t->regs[R_CONTROL] & CONTROL_CONT)) {  in timer_hit()
169         t->regs[R_STATUS] &= ~STATUS_RUN;  in timer_hit()
170         ptimer_set_count(t->ptimer, tvalue);  in timer_hit()
172         ptimer_run(t->ptimer, 1);  in timer_hit()
175     qemu_set_irq(t->irq, timer_irq_state(t));  in timer_hit()
180     AlteraTimer *t = ALTERA_TIMER(dev);  in altera_timer_realize()  local
183     if (t->freq_hz == 0) {  in altera_timer_realize()
188     t->ptimer = ptimer_init(timer_hit, t, PTIMER_POLICY_LEGACY);  in altera_timer_realize()
189     ptimer_transaction_begin(t->ptimer);  in altera_timer_realize()
190     ptimer_set_freq(t->ptimer, t->freq_hz);  in altera_timer_realize()
191     ptimer_transaction_commit(t->ptimer);  in altera_timer_realize()
193     memory_region_init_io(&t->mmio, OBJECT(t), &timer_ops, t,  in altera_timer_realize()
195     sysbus_init_mmio(sbd, &t->mmio);  in altera_timer_realize()
200     AlteraTimer *t = ALTERA_TIMER(obj);  in altera_timer_init()  local
203     sysbus_init_irq(sbd, &t->irq);  in altera_timer_init()
208     AlteraTimer *t = ALTERA_TIMER(dev);  in altera_timer_reset()  local
210     ptimer_transaction_begin(t->ptimer);  in altera_timer_reset()
211     ptimer_stop(t->ptimer);  in altera_timer_reset()
212     ptimer_set_limit(t->ptimer, 0xffffffff, 1);  in altera_timer_reset()
213     ptimer_transaction_commit(t->ptimer);  in altera_timer_reset()
214     memset(t->regs, 0, sizeof(t->regs));  in altera_timer_reset()