* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <kern/misc_protos.h>
-#include <stdatomic.h>
+#include <machine/atomic.h>
#include <mach/mach_time.h>
#include <mach/clock_types.h>
#include <kern/clock.h>
#include <arm64/machine_remote_time.h>
#include <sys/kdebug.h>
#include <arm/machine_routines.h>
+#include <kern/remote_time.h>
-lck_spin_t *bt_spin_lock = NULL;
_Atomic uint32_t bt_init_flag = 0;
-extern lck_spin_t *ts_conversion_lock;
extern void mach_bridge_add_timestamp(uint64_t remote_timestamp, uint64_t local_timestamp);
extern void bt_calibration_thread_start(void);
+extern void bt_params_add(struct bt_params *params);
void
mach_bridge_init_timestamp(void)
{
/* This function should be called only once by the driver
* implementing the interrupt handler for receiving timestamps */
- if (bt_init_flag) {
- assert(!bt_init_flag);
+ if (os_atomic_load(&bt_init_flag, relaxed)) {
return;
}
- /* Initialize the locks */
- static lck_grp_t *bt_lck_grp = NULL;
-
- bt_lck_grp = lck_grp_alloc_init("bridgetimestamp", LCK_GRP_ATTR_NULL);
- bt_spin_lock = lck_spin_alloc_init(bt_lck_grp, NULL);
- ts_conversion_lock = lck_spin_alloc_init(bt_lck_grp, NULL);
-
- atomic_store(&bt_init_flag, 1);
+ os_atomic_store(&bt_init_flag, 1, release);
/* Start the kernel thread only after all the locks have been initialized */
bt_calibration_thread_start();
assert(ml_at_interrupt_context() == TRUE);
/* Ensure the locks have been initialized */
- if (!bt_init_flag) {
- assert(bt_init_flag != 0);
+ if (!os_atomic_load(&bt_init_flag, acquire)) {
+ panic("%s called before mach_bridge_init_timestamp", __func__);
return;
}
KDBG(MACHDBG_CODE(DBG_MACH_CLOCK, MACH_BRIDGE_RCV_TS), localTimestamp, remoteTimestamp);
- lck_spin_lock(bt_spin_lock);
+ lck_spin_lock(&bt_spin_lock);
mach_bridge_add_timestamp(remoteTimestamp, localTimestamp);
- lck_spin_unlock(bt_spin_lock);
+ lck_spin_unlock(&bt_spin_lock);
return;
}
+
+/*
+ * This function is used to set parameters, calculated externally,
+ * needed for mach_bridge_remote_time.
+ */
+void
+mach_bridge_set_params(uint64_t local_timestamp, uint64_t remote_timestamp, double rate)
+{
+ /* Ensure the locks have been initialized */
+ if (!os_atomic_load(&bt_init_flag, acquire)) {
+ panic("%s called before mach_bridge_init_timestamp", __func__);
+ return;
+ }
+
+ struct bt_params params = {};
+ params.base_local_ts = local_timestamp;
+ params.base_remote_ts = remote_timestamp;
+ params.rate = rate;
+ lck_spin_lock(&bt_ts_conversion_lock);
+ bt_params_add(¶ms);
+ lck_spin_unlock(&bt_ts_conversion_lock);
+ KDBG(MACHDBG_CODE(DBG_MACH_CLOCK, MACH_BRIDGE_TS_PARAMS), params.base_local_ts,
+ params.base_remote_ts, *(uint64_t *)((void *)¶ms.rate));
+}