From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Luc Michel" <luc@lmichel.fr>,
"Peter Maydell" <peter.maydell@linaro.org>,
"Damien Hedde" <damien.hedde@dahe.fr>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>,
"Inès Varhol" <ines.varhol@telecom-paris.fr>
Subject: [PATCH] hw/clock: Expose 'freq-hz' QOM property
Date: Wed, 8 May 2024 16:13:33 +0200 [thread overview]
Message-ID: <20240508141333.44610-1-philmd@linaro.org> (raw)
Expose the clock frequency via the QOM 'freq-hz' property,
as it might be useful for QTests.
HMP example:
$ qemu-system-mips -S -monitor stdio -M mipssim
(qemu) qom-get /machine/cpu-refclk freq-hz
12000000
Inspired-by: Inès Varhol <ines.varhol@telecom-paris.fr>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
hw/core/clock.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/hw/core/clock.c b/hw/core/clock.c
index e212865307..55f86ef483 100644
--- a/hw/core/clock.c
+++ b/hw/core/clock.c
@@ -13,6 +13,7 @@
#include "qemu/osdep.h"
#include "qemu/cutils.h"
+#include "qapi/visitor.h"
#include "hw/clock.h"
#include "trace.h"
@@ -158,6 +159,14 @@ bool clock_set_mul_div(Clock *clk, uint32_t multiplier, uint32_t divider)
return true;
}
+static void clock_prop_freq_get(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ Clock *clk = CLOCK(obj);
+ uint64_t freq_hz = clock_get_hz(clk);
+ visit_type_uint64(v, name, &freq_hz, errp);
+}
+
static void clock_initfn(Object *obj)
{
Clock *clk = CLOCK(obj);
@@ -166,6 +175,9 @@ static void clock_initfn(Object *obj)
clk->divider = 1;
QLIST_INIT(&clk->children);
+
+ object_property_add(obj, "freq-hz", "uint64",
+ clock_prop_freq_get, NULL, NULL, NULL);
}
static void clock_finalizefn(Object *obj)
--
2.41.0
next reply other threads:[~2024-05-08 14:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-08 14:13 Philippe Mathieu-Daudé [this message]
2024-05-08 17:46 ` [PATCH] hw/clock: Expose 'freq-hz' QOM property Peter Maydell
2024-05-08 21:27 ` Philippe Mathieu-Daudé
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