diff options
| author | Madhukar Pappireddy <madhukar.pappireddy@arm.com> | 2021-10-26 14:50:52 -0500 |
|---|---|---|
| committer | Madhukar Pappireddy <madhukar.pappireddy@arm.com> | 2021-11-05 15:35:57 -0500 |
| commit | a09d5f747ef59e9b12b9a54983c8d58d71651970 (patch) | |
| tree | c73ce2f9ba205888aefa0a3a3dfe514e6cc22ee0 /spm/cactus/cactus_tests | |
| parent | dd7db24aaf872571b630b46add1995b3bec1b6fd (diff) | |
feat: add helper functions for SP sleep
This patch introduces new helper utilities: virtualcounter_read() and
sp_sleep_elapsed_time() which are further used in sp_sleep() utility.
This patch also adds a needed isb when reading the virtual counter,
to prevent reading stale values, as well as reducing the number of
reads of the virtual counter required. Refer Arm ARM D11.2.2
Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
Change-Id: Icaf1777e85ee2efc043bfa83d630edf54bf5a099
Diffstat (limited to 'spm/cactus/cactus_tests')
| -rw-r--r-- | spm/cactus/cactus_tests/cactus_test_interrupts.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/spm/cactus/cactus_tests/cactus_test_interrupts.c b/spm/cactus/cactus_tests/cactus_test_interrupts.c index b675dfc..aa39ef2 100644 --- a/spm/cactus/cactus_tests/cactus_test_interrupts.c +++ b/spm/cactus/cactus_tests/cactus_test_interrupts.c @@ -13,18 +13,16 @@ CACTUS_CMD_HANDLER(sleep_cmd, CACTUS_SLEEP_CMD) { - uint64_t timer_freq = read_cntfrq_el0(); - uint64_t time1, time2, time_lapsed; + uint64_t time_lapsed; uint32_t sleep_time = cactus_get_sleep_time(*args); - VERBOSE("Request to sleep %x for %ums.\n", ffa_dir_msg_dest(*args), sleep_time); + VERBOSE("Request to sleep %x for %ums.\n", ffa_dir_msg_dest(*args), + sleep_time); - time1 = read_cntvct_el0(); - sp_sleep(sleep_time); - time2 = read_cntvct_el0(); + time_lapsed = sp_sleep_elapsed_time(sleep_time); - /* Lapsed time should be at least equal to sleep time */ - time_lapsed = ((time2 - time1) * 1000) / timer_freq; + /* Lapsed time should be at least equal to sleep time. */ + VERBOSE("Sleep complete: %llu\n", time_lapsed); return cactus_response(ffa_dir_msg_dest(*args), ffa_dir_msg_source(*args), |