gpu: nvgpu: clk requests completion and event fds

Install one completion fd per SET request.
Notifications on dedicated event fd.
Changed frequencies unit to Hz from MHz.
Remove sequence numbers from dummy arbiter.
Added effective clock type (query frequency from counters).

Jira DNVGPU-125

Change-Id: Id5445c6ae1d6bf06f7f59c82ff6c5d3b34e26483
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1230239
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
(cherry picked from commit d17083f4ceb69725c661678607a3e43148d38560)
Reviewed-on: http://git-master/r/1243106

1 files changed, 15 insertions, 14 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk_arb.h b/drivers/gpu/nvgpu/clk/clk_arb.h
index 9981041b..95749369 100644
--- a/drivers/gpu/nvgpu/clk/clk_arb.h
+++ b/drivers/gpu/nvgpu/clk/clk_arb.h
@@ -22,16 +22,17 @@ struct nvgpu_clk_session;
 int nvgpu_clk_arb_init_arbiter(struct gk20a *g);
 
 int nvgpu_clk_arb_get_arbiter_clk_range(struct gk20a *g, u32 api_domain,
-                u16 *min_mhz, u16 *max_mhz);
+                u64 *min_hz, u64 *max_hz);
 
-int nvgpu_clk_arb_get_arbiter_actual_mhz(struct gk20a *g,
-                u32 api_domain, u16 *actual_mhz);
+int nvgpu_clk_arb_get_arbiter_actual_hz(struct gk20a *g,
+                u32 api_domain, u64 *actual_hz);
+
+int nvgpu_clk_arb_get_arbiter_effective_hz(struct gk20a *g,
+                u32 api_domain, u64 *actual_hz);
 
 int nvgpu_clk_arb_get_arbiter_clk_f_points(struct gk20a *g,
         u32 api_domain, u32 *max_points, u16 *fpoints);
 
-u32 nvgpu_clk_arb_get_arbiter_req_nr(struct gk20a *g);
-
 u32 nvgpu_clk_arb_get_arbiter_clk_domains(struct gk20a *g);
 
 void nvgpu_clk_arb_cleanup_arbiter(struct gk20a *g);
@@ -42,20 +43,20 @@ int nvgpu_clk_arb_install_session_fd(struct gk20a *g,
 int nvgpu_clk_arb_init_session(struct gk20a *g,
                 struct nvgpu_clk_session **_session);
 
-void nvgpu_clk_arb_cleanup_session(struct gk20a *g,
+void nvgpu_clk_arb_release_session(struct gk20a *g,
                 struct nvgpu_clk_session *session);
 
-void nvgpu_clk_arb_apply_session_constraints(struct gk20a *g,
-                struct nvgpu_clk_session *session);
+int nvgpu_clk_arb_apply_session_constraints(struct gk20a *g,
+        struct nvgpu_clk_session *session, int *completion_fd);
 
-int nvgpu_clk_arb_set_session_target_mhz(struct nvgpu_clk_session *session,
-                u32 api_domain, u16 target_mhz);
+int nvgpu_clk_arb_set_session_target_hz(struct nvgpu_clk_session *session,
+                u32 api_domain, u64 target_hz);
 
-int nvgpu_clk_arb_get_session_target_mhz(struct nvgpu_clk_session *session,
-                u32 api_domain, u16 *target_mhz);
+int nvgpu_clk_arb_get_session_target_hz(struct nvgpu_clk_session *session,
+                u32 api_domain, u64 *target_hz);
 
-u32 nvgpu_clk_arb_get_session_req_nr(struct gk20a *g,
-                struct nvgpu_clk_session *session);
+int nvgpu_clk_arb_install_event_fd(struct gk20a *g,
+        struct nvgpu_clk_session *session, int *event_fd);