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tegra: hwpm: add checks for PMA quiesce state

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- Zeroing of PMA trigger registers is unnecessary. Remove corresponding
logic from HWPM teardown function.
- During device open, add a check for PMA/RTR status. This will ensure
that PMA/RTR are ready to start new profiling session. Device open will
fail if RTR and PMA enginestatus is not ready(idle).
- SOC HWPM driver disables and releases all reserved IPs before teardown
steps. Update teardown logic to zero out IP allowlist registers during
teardown.

Jira THWPM-41
Bug 3714516

Change-Id: Iede5a5ed9860e2a73c8e4a04aeedfc061458c793
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2776229
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-hwpm/+/2797444
This commit is contained in:
Vedashree Vidwans
2022-10-05 11:24:33 -07:00
committed by mobile promotions
parent 7c1ae11f78
commit 913f1b0697
10 changed files with 147 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/tegra/hwpm/include/tegra_hwpm.h
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@@ -162,12 +162,13 @@ enum tegra_hwpm_element_type {
enum tegra_hwpm_funcs {
TEGRA_HWPM_INIT_IP_STRUCTURES,
TEGRA_HWPM_MATCH_BASE_ADDRESS,
TEGRA_HWPM_FIND_GIVEN_ADDRESS,
TEGRA_HWPM_UPDATE_IP_INST_MASK,
TEGRA_HWPM_GET_ALIST_SIZE,
TEGRA_HWPM_COMBINE_ALIST,
TEGRA_HWPM_RESERVE_GIVEN_RESOURCE,
TEGRA_HWPM_BIND_RESOURCES,
TEGRA_HWPM_FIND_GIVEN_ADDRESS,
TEGRA_HWPM_UNBIND_RESOURCES,
TEGRA_HWPM_RELEASE_RESOURCES,
TEGRA_HWPM_RELEASE_ROUTER,
TEGRA_HWPM_RELEASE_IP_STRUCTURES
@@ -396,6 +397,7 @@ struct tegra_soc_hwpm_chip {
int (*reserve_rtr)(struct tegra_soc_hwpm *hwpm);
int (*release_rtr)(struct tegra_soc_hwpm *hwpm);
int (*check_status)(struct tegra_soc_hwpm *hwpm);
int (*disable_triggers)(struct tegra_soc_hwpm *hwpm);
int (*perfmon_enable)(struct tegra_soc_hwpm *hwpm,
struct hwpm_ip_aperture *perfmon);