[Skiboot] [PATCH v3 2/3] core/timer: Add support for platform specific heartbeat
Chris Smart
chris at distroguy.com
Thu Jul 21 17:10:48 AEST 2016
The timer code currently has a default and a special check for FSP
machines or those with SLW timer facility.
This patch adds support for platform quirk to set the timer.
Signed-off-by: Chris Smart <chris at distroguy.com>
---
Changes since v2:
- Address concerns raised by Mr Neuling
- timer replaces with "time"
- fix commit subject line
core/timer.c | 16 ++++++++++------
include/platform.h | 4 ++++
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/core/timer.c b/core/timer.c
index 8bfba4a6dc3b..6e141de5028e 100644
--- a/core/timer.c
+++ b/core/timer.c
@@ -245,22 +245,26 @@ void check_timers(bool from_interrupt)
void late_init_timers(void)
{
+ int heartbeat = HEARTBEAT_DEFAULT_MS;
+
/* Add a property requesting the OS to call opal_poll_event() at
* a specified interval in order for us to run our background
* low priority pollers.
*
+ * If a platform quirk exists, use that, else use the default.
+ *
* If we have an SLW timer facility, we run this 10 times slower,
* we could possibly completely get rid of it.
*
* We use a value in milliseconds, we don't want this to ever be
* faster than that.
*/
- if (slw_timer_ok() || fsp_present()) {
- dt_add_property_cells(opal_node, "ibm,heartbeat-ms",
- HEARTBEAT_DEFAULT_MS * 10);
- } else {
- dt_add_property_cells(opal_node, "ibm,heartbeat-ms",
- HEARTBEAT_DEFAULT_MS);
+ if (platform.heartbeat_time) {
+ heartbeat = platform.heartbeat_time();
+ }else if (slw_timer_ok() || fsp_present()) {
+ heartbeat = HEARTBEAT_DEFAULT_MS * 10;
}
+
+ dt_add_property_cells(opal_node, "ibm,heartbeat-ms", heartbeat);
}
#endif
diff --git a/include/platform.h b/include/platform.h
index d07994fda709..062a94185b11 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -159,6 +159,10 @@ struct platform {
*/
int64_t (*sensor_read)(uint32_t sensor_hndl, int token,
uint32_t *sensor_data);
+ /*
+ * Return the heartbeat time
+ */
+ int (*heartbeat_time)(void);
/*
* OPAL terminate
--
2.7.4
More information about the Skiboot
mailing list