hw/ptimer: Introduce timer policy feature

Some of the timer devices may behave differently from what ptimer
provides. Introduce ptimer policy feature that allows ptimer users to
change default and wrong timer behaviour, for example to continuously
trigger periodic timer when load value is equal to "0".

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Message-id: 994cd608ec392da6e58f0643800dda595edb9d97.1473252818.git.digetx@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/musicpal.c

@@ -837,7 +837,7 @@ static void mv88w8618_timer_init(SysBusDevice *dev, mv88w8618_timer_state *s,
     s->freq = freq;
 
     bh = qemu_bh_new(mv88w8618_timer_tick, s);
-    s->ptimer = ptimer_init(bh);
+    s->ptimer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
 }
 
 static uint64_t mv88w8618_pit_read(void *opaque, hwaddr offset,

hw/core/ptimer.c

@@ -21,6 +21,7 @@ struct ptimer_state
     int64_t period;
     int64_t last_event;
     int64_t next_event;
+    uint8_t policy_mask;
     QEMUBH *bh;
     QEMUTimer *timer;
 };
@@ -243,12 +244,13 @@ const VMStateDescription vmstate_ptimer = {
     }
 };
 
-ptimer_state *ptimer_init(QEMUBH *bh)
+ptimer_state *ptimer_init(QEMUBH *bh, uint8_t policy_mask)
 {
     ptimer_state *s;
 
     s = (ptimer_state *)g_malloc0(sizeof(ptimer_state));
     s->bh = bh;
     s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, ptimer_tick, s);
+    s->policy_mask = policy_mask;
     return s;
 }

hw/dma/xilinx_axidma.c

@@ -548,7 +548,7 @@ static void xilinx_axidma_realize(DeviceState *dev, Error **errp)
 
         st->nr = i;
         st->bh = qemu_bh_new(timer_hit, st);
-        st->ptimer = ptimer_init(st->bh);
+        st->ptimer = ptimer_init(st->bh, PTIMER_POLICY_DEFAULT);
         ptimer_set_freq(st->ptimer, s->freqhz);
     }
     return;

hw/m68k/mcf5206.c

@@ -139,7 +139,7 @@ static m5206_timer_state *m5206_timer_init(qemu_irq irq)
 
     s = (m5206_timer_state *)g_malloc0(sizeof(m5206_timer_state));
     bh = qemu_bh_new(m5206_timer_trigger, s);
-    s->timer = ptimer_init(bh);
+    s->timer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
     s->irq = irq;
     m5206_timer_reset(s);
     return s;

hw/m68k/mcf5208.c

@@ -183,7 +183,7 @@ static void mcf5208_sys_init(MemoryRegion *address_space, qemu_irq *pic)
     for (i = 0; i < 2; i++) {
         s = (m5208_timer_state *)g_malloc0(sizeof(m5208_timer_state));
         bh = qemu_bh_new(m5208_timer_trigger, s);
-        s->timer = ptimer_init(bh);
+        s->timer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
         memory_region_init_io(&s->iomem, NULL, &m5208_timer_ops, s,
                               "m5208-timer", 0x00004000);
         memory_region_add_subregion(address_space, 0xfc080000 + 0x4000 * i,

hw/net/fsl_etsec/etsec.c

@@ -387,7 +387,7 @@ static void etsec_realize(DeviceState *dev, Error **errp)
 
 
     etsec->bh     = qemu_bh_new(etsec_timer_hit, etsec);
-    etsec->ptimer = ptimer_init(etsec->bh);
+    etsec->ptimer = ptimer_init(etsec->bh, PTIMER_POLICY_DEFAULT);
     ptimer_set_freq(etsec->ptimer, 100);
 }
 

hw/net/lan9118.c

@@ -1345,7 +1345,7 @@ static int lan9118_init1(SysBusDevice *sbd)
     s->txp = &s->tx_packet;
 
     bh = qemu_bh_new(lan9118_tick, s);
-    s->timer = ptimer_init(bh);
+    s->timer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
     ptimer_set_freq(s->timer, 10000);
     ptimer_set_limit(s->timer, 0xffff, 1);
 

hw/timer/allwinner-a10-pit.c

@@ -267,7 +267,7 @@ static void a10_pit_init(Object *obj)
         tc->container = s;
         tc->index = i;
         bh[i] = qemu_bh_new(a10_pit_timer_cb, tc);
-        s->timer[i] = ptimer_init(bh[i]);
+        s->timer[i] = ptimer_init(bh[i], PTIMER_POLICY_DEFAULT);
     }
 }
 

hw/timer/arm_timer.c

@@ -171,7 +171,7 @@ static arm_timer_state *arm_timer_init(uint32_t freq)
     s->control = TIMER_CTRL_IE;
 
     bh = qemu_bh_new(arm_timer_tick, s);
-    s->timer = ptimer_init(bh);
+    s->timer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
     vmstate_register(NULL, -1, &vmstate_arm_timer, s);
     return s;
 }

hw/timer/digic-timer.c

@@ -127,7 +127,7 @@ static void digic_timer_init(Object *obj)
 {
     DigicTimerState *s = DIGIC_TIMER(obj);
 
-    s->ptimer = ptimer_init(NULL);
+    s->ptimer = ptimer_init(NULL, PTIMER_POLICY_DEFAULT);
 
     /*
      * FIXME: there is no documentation on Digic timer

hw/timer/etraxfs_timer.c

@@ -322,9 +322,9 @@ static int etraxfs_timer_init(SysBusDevice *dev)
     t->bh_t0 = qemu_bh_new(timer0_hit, t);
     t->bh_t1 = qemu_bh_new(timer1_hit, t);
     t->bh_wd = qemu_bh_new(watchdog_hit, t);
-    t->ptimer_t0 = ptimer_init(t->bh_t0);
-    t->ptimer_t1 = ptimer_init(t->bh_t1);
-    t->ptimer_wd = ptimer_init(t->bh_wd);
+    t->ptimer_t0 = ptimer_init(t->bh_t0, PTIMER_POLICY_DEFAULT);
+    t->ptimer_t1 = ptimer_init(t->bh_t1, PTIMER_POLICY_DEFAULT);
+    t->ptimer_wd = ptimer_init(t->bh_wd, PTIMER_POLICY_DEFAULT);
 
     sysbus_init_irq(dev, &t->irq);
     sysbus_init_irq(dev, &t->nmi);

hw/timer/exynos4210_mct.c

@@ -1431,15 +1431,16 @@ static void exynos4210_mct_init(Object *obj)
 
     /* Global timer */
     bh[0] = qemu_bh_new(exynos4210_gfrc_event, s);
-    s->g_timer.ptimer_frc = ptimer_init(bh[0]);
+    s->g_timer.ptimer_frc = ptimer_init(bh[0], PTIMER_POLICY_DEFAULT);
     memset(&s->g_timer.reg, 0, sizeof(struct gregs));
 
     /* Local timers */
     for (i = 0; i < 2; i++) {
         bh[0] = qemu_bh_new(exynos4210_ltick_event, &s->l_timer[i]);
         bh[1] = qemu_bh_new(exynos4210_lfrc_event, &s->l_timer[i]);
-        s->l_timer[i].tick_timer.ptimer_tick = ptimer_init(bh[0]);
-        s->l_timer[i].ptimer_frc = ptimer_init(bh[1]);
+        s->l_timer[i].tick_timer.ptimer_tick =
+                                   ptimer_init(bh[0], PTIMER_POLICY_DEFAULT);
+        s->l_timer[i].ptimer_frc = ptimer_init(bh[1], PTIMER_POLICY_DEFAULT);
         s->l_timer[i].id = i;
     }
 

hw/timer/exynos4210_pwm.c

@@ -390,7 +390,7 @@ static void exynos4210_pwm_init(Object *obj)
     for (i = 0; i < EXYNOS4210_PWM_TIMERS_NUM; i++) {
         bh = qemu_bh_new(exynos4210_pwm_tick, &s->timer[i]);
         sysbus_init_irq(dev, &s->timer[i].irq);
-        s->timer[i].ptimer = ptimer_init(bh);
+        s->timer[i].ptimer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
         s->timer[i].id = i;
         s->timer[i].parent = s;
     }

hw/timer/exynos4210_rtc.c

@@ -555,12 +555,12 @@ static void exynos4210_rtc_init(Object *obj)
     QEMUBH *bh;
 
     bh = qemu_bh_new(exynos4210_rtc_tick, s);
-    s->ptimer = ptimer_init(bh);
+    s->ptimer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
     ptimer_set_freq(s->ptimer, RTC_BASE_FREQ);
     exynos4210_rtc_update_freq(s, 0);
 
     bh = qemu_bh_new(exynos4210_rtc_1Hz_tick, s);
-    s->ptimer_1Hz = ptimer_init(bh);
+    s->ptimer_1Hz = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
     ptimer_set_freq(s->ptimer_1Hz, RTC_BASE_FREQ);
 
     sysbus_init_irq(dev, &s->alm_irq);

hw/timer/grlib_gptimer.c

@@ -363,7 +363,7 @@ static int grlib_gptimer_init(SysBusDevice *dev)
 
         timer->unit   = unit;
         timer->bh     = qemu_bh_new(grlib_gptimer_hit, timer);
-        timer->ptimer = ptimer_init(timer->bh);
+        timer->ptimer = ptimer_init(timer->bh, PTIMER_POLICY_DEFAULT);
         timer->id     = i;
 
         /* One IRQ line for each timer */

hw/timer/imx_epit.c

@@ -314,10 +314,10 @@ static void imx_epit_realize(DeviceState *dev, Error **errp)
                           0x00001000);
     sysbus_init_mmio(sbd, &s->iomem);
 
-    s->timer_reload = ptimer_init(NULL);
+    s->timer_reload = ptimer_init(NULL, PTIMER_POLICY_DEFAULT);
 
     bh = qemu_bh_new(imx_epit_cmp, s);
-    s->timer_cmp = ptimer_init(bh);
+    s->timer_cmp = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
 }
 
 static void imx_epit_class_init(ObjectClass *klass, void *data)

hw/timer/imx_gpt.c

@@ -461,7 +461,7 @@ static void imx_gpt_realize(DeviceState *dev, Error **errp)
     sysbus_init_mmio(sbd, &s->iomem);
 
     bh = qemu_bh_new(imx_gpt_timeout, s);
-    s->timer = ptimer_init(bh);
+    s->timer = ptimer_init(bh, PTIMER_POLICY_DEFAULT);
 }
 
 static void imx_gpt_class_init(ObjectClass *klass, void *data)

hw/timer/lm32_timer.c

@@ -184,7 +184,7 @@ static void lm32_timer_init(Object *obj)
     sysbus_init_irq(dev, &s->irq);
 
     s->bh = qemu_bh_new(timer_hit, s);
-    s->ptimer = ptimer_init(s->bh);
+    s->ptimer = ptimer_init(s->bh, PTIMER_POLICY_DEFAULT);
 
     memory_region_init_io(&s->iomem, obj, &timer_ops, s,
                           "timer", R_MAX * 4);

hw/timer/milkymist-sysctl.c

@@ -281,8 +281,8 @@ static void milkymist_sysctl_init(Object *obj)
 
     s->bh0 = qemu_bh_new(timer0_hit, s);
     s->bh1 = qemu_bh_new(timer1_hit, s);
-    s->ptimer0 = ptimer_init(s->bh0);
-    s->ptimer1 = ptimer_init(s->bh1);
+    s->ptimer0 = ptimer_init(s->bh0, PTIMER_POLICY_DEFAULT);
+    s->ptimer1 = ptimer_init(s->bh1, PTIMER_POLICY_DEFAULT);
 
     memory_region_init_io(&s->regs_region, obj, &sysctl_mmio_ops, s,
             "milkymist-sysctl", R_MAX * 4);

hw/timer/puv3_ost.c

@@ -125,7 +125,7 @@ static int puv3_ost_init(SysBusDevice *dev)
     sysbus_init_irq(dev, &s->irq);
 
     s->bh = qemu_bh_new(puv3_ost_tick, s);
-    s->ptimer = ptimer_init(s->bh);
+    s->ptimer = ptimer_init(s->bh, PTIMER_POLICY_DEFAULT);
     ptimer_set_freq(s->ptimer, 50 * 1000 * 1000);
 
     memory_region_init_io(&s->iomem, OBJECT(s), &puv3_ost_ops, s, "puv3_ost",