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allwinner-a10-pit: use level triggered interrupts

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Convert the interrupt generation logic to the use of level triggered
interrupts.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Message-id: 1395771730-16882-5-git-send-email-b.galvani@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Beniamino Galvani 2014-03-25 19:22:07 +01:00 committed by Peter Maydell
parent 323a8771cf
commit a63f9f85e3
1 changed files with 14 additions and 1 deletions
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15
hw/timer/allwinner-a10-pit.c
View file

@ -19,6 +19,15 @@
#include "sysemu/sysemu.h"
#include "hw/timer/allwinner-a10-pit.h"
static void a10_pit_update_irq(AwA10PITState *s)
{
int i;
for (i = 0; i < AW_A10_PIT_TIMER_NR; i++) {
qemu_set_irq(s->irq[i], !!(s->irq_status & s->irq_enable & (1 << i)));
}
}
static uint64_t a10_pit_read(void *opaque, hwaddr offset, unsigned size)
{
AwA10PITState *s = AW_A10_PIT(opaque);
@ -74,9 +83,11 @@ static void a10_pit_write(void *opaque, hwaddr offset, uint64_t value,
switch (offset) {
case AW_A10_PIT_TIMER_IRQ_EN:
s->irq_enable = value;
a10_pit_update_irq(s);
break;
case AW_A10_PIT_TIMER_IRQ_ST:
s->irq_status &= ~value;
a10_pit_update_irq(s);
break;
case AW_A10_PIT_TIMER_BASE ... AW_A10_PIT_TIMER_BASE_END:
index = offset & 0xf0;
@ -178,6 +189,8 @@ static void a10_pit_reset(DeviceState *dev)
s->irq_enable = 0;
s->irq_status = 0;
a10_pit_update_irq(s);
for (i = 0; i < 6; i++) {
s->control[i] = AW_A10_PIT_DEFAULT_CLOCK;
s->interval[i] = 0;
@ -203,7 +216,7 @@ static void a10_pit_timer_cb(void *opaque)
ptimer_stop(s->timer[i]);
s->control[i] &= ~AW_A10_PIT_TIMER_EN;
}
qemu_irq_pulse(s->irq[i]);
a10_pit_update_irq(s);
}
}