Le 29/07/2016 à 15:39, Peter Maydell a écrit :
On 13 June 2016 at 17:27, <fred.kon...@greensocs.com> wrote:
From: KONRAD Frederic <fred.kon...@greensocs.com>
This introduces the clock binding and the update part.
When the qemu_clk_rate_update(qemu_clk, int) function is called:
* The clock callback is called on the qemu_clk so it can change the rate.
* The qemu_clk_rate_update function is called on all the driven clock.
Signed-off-by: KONRAD Frederic <fred.kon...@greensocs.com>
---
include/qemu/qemu-clock.h | 65 +++++++++++++++++++++++++++++++++++++++++++++++
qemu-clock.c | 56 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 121 insertions(+)
diff --git a/include/qemu/qemu-clock.h b/include/qemu/qemu-clock.h
index a2ba105..677de9a 100644
--- a/include/qemu/qemu-clock.h
+++ b/include/qemu/qemu-clock.h
@@ -27,15 +27,29 @@
#include "qemu/osdep.h"
#include "qom/object.h"
+typedef float (*qemu_clk_on_rate_update_cb)(void *opaque, float rate);
+
#define TYPE_CLOCK "qemu-clk"
#define QEMU_CLOCK(obj) OBJECT_CHECK(struct qemu_clk, (obj), TYPE_CLOCK)
+typedef struct ClkList ClkList;
+
typedef struct qemu_clk {
/*< private >*/
Object parent_obj;
char *name; /* name of this clock in the device. */
+ float in_rate; /* rate of the clock which drive this pin. */
+ float out_rate; /* rate of this clock pin. */
I'm rather dubious that we should be using floats here.
Almost nothing in our hardware emulation uses float or double.
We probably can use uint64_t here?
Thanks,
Fred
+ void *opaque;
+ qemu_clk_on_rate_update_cb cb;
+ QLIST_HEAD(, ClkList) bound;
} *qemu_clk;
thanks
-- PMM
