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hw/timer/imx_gpt.c: Switch to transaction-based ptimer API

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Switch the imx_epit.c code away from bottom-half based ptimers to
the new transaction-based ptimer API.  This just requires adding
begin/commit calls around the various places that modify the ptimer
state, and using the new ptimer_init() function to create the timer.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-19-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2019-10-08 18:17:37 +01:00
parent cc2722ec83
commit 1b914994ea
1 changed files with 17 additions and 4 deletions
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21
hw/timer/imx_gpt.c
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@ -16,7 +16,6 @@
#include "hw/irq.h"
#include "hw/timer/imx_gpt.h"
#include "migration/vmstate.h"
#include "qemu/main-loop.h"
#include "qemu/module.h"
#include "qemu/log.h"
@ -127,6 +126,7 @@ static const IMXClk imx7_gpt_clocks[] = {
CLK_NONE, /* 111 not defined */
};
/* Must be called from within ptimer_transaction_begin/commit block */
static void imx_gpt_set_freq(IMXGPTState *s)
{
uint32_t clksrc = extract32(s->cr, GPT_CR_CLKSRC_SHIFT, 3);
@ -167,6 +167,7 @@ static inline uint32_t imx_gpt_find_limit(uint32_t count, uint32_t reg,
return timeout;
}
/* Must be called from within ptimer_transaction_begin/commit block */
static void imx_gpt_compute_next_timeout(IMXGPTState *s, bool event)
{
uint32_t timeout = GPT_TIMER_MAX;
@ -313,6 +314,7 @@ static uint64_t imx_gpt_read(void *opaque, hwaddr offset, unsigned size)
static void imx_gpt_reset_common(IMXGPTState *s, bool is_soft_reset)
{
ptimer_transaction_begin(s->timer);
/* stop timer */
ptimer_stop(s->timer);
@ -350,6 +352,7 @@ static void imx_gpt_reset_common(IMXGPTState *s, bool is_soft_reset)
if (s->freq && (s->cr & GPT_CR_EN)) {
ptimer_run(s->timer, 1);
}
ptimer_transaction_commit(s->timer);
}
static void imx_gpt_soft_reset(DeviceState *dev)
@ -382,6 +385,7 @@ static void imx_gpt_write(void *opaque, hwaddr offset, uint64_t value,
imx_gpt_soft_reset(DEVICE(s));
} else {
/* set our freq, as the source might have changed */
ptimer_transaction_begin(s->timer);
imx_gpt_set_freq(s);
if ((oldreg ^ s->cr) & GPT_CR_EN) {
@ -397,12 +401,15 @@ static void imx_gpt_write(void *opaque, hwaddr offset, uint64_t value,
ptimer_stop(s->timer);
}
}
ptimer_transaction_commit(s->timer);
}
break;
case 1: /* Prescaler */
s->pr = value & 0xfff;
ptimer_transaction_begin(s->timer);
imx_gpt_set_freq(s);
ptimer_transaction_commit(s->timer);
break;
case 2: /* SR */
@ -414,13 +421,16 @@ static void imx_gpt_write(void *opaque, hwaddr offset, uint64_t value,
s->ir = value & 0x3f;
imx_gpt_update_int(s);
ptimer_transaction_begin(s->timer);
imx_gpt_compute_next_timeout(s, false);
ptimer_transaction_commit(s->timer);
break;
case 4: /* OCR1 -- output compare register */
s->ocr1 = value;
ptimer_transaction_begin(s->timer);
/* In non-freerun mode, reset count when this register is written */
if (!(s->cr & GPT_CR_FRR)) {
s->next_timeout = GPT_TIMER_MAX;
@ -429,6 +439,7 @@ static void imx_gpt_write(void *opaque, hwaddr offset, uint64_t value,
/* compute the new timeout */
imx_gpt_compute_next_timeout(s, false);
ptimer_transaction_commit(s->timer);
break;
@ -436,7 +447,9 @@ static void imx_gpt_write(void *opaque, hwaddr offset, uint64_t value,
s->ocr2 = value;
/* compute the new timeout */
ptimer_transaction_begin(s->timer);
imx_gpt_compute_next_timeout(s, false);
ptimer_transaction_commit(s->timer);
break;
@ -444,7 +457,9 @@ static void imx_gpt_write(void *opaque, hwaddr offset, uint64_t value,
s->ocr3 = value;
/* compute the new timeout */
ptimer_transaction_begin(s->timer);
imx_gpt_compute_next_timeout(s, false);
ptimer_transaction_commit(s->timer);
break;
@ -484,15 +499,13 @@ static void imx_gpt_realize(DeviceState *dev, Error **errp)
{
IMXGPTState *s = IMX_GPT(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
QEMUBH *bh;
sysbus_init_irq(sbd, &s->irq);
memory_region_init_io(&s->iomem, OBJECT(s), &imx_gpt_ops, s, TYPE_IMX_GPT,
0x00001000);
sysbus_init_mmio(sbd, &s->iomem);
bh = qemu_bh_new(imx_gpt_timeout, s);
s->timer = ptimer_init_with_bh(bh, PTIMER_POLICY_DEFAULT);
s->timer = ptimer_init(imx_gpt_timeout, s, PTIMER_POLICY_DEFAULT);
}
static void imx_gpt_class_init(ObjectClass *klass, void *data)