From 2a41b1869f142d871a1e60e3171aa5f19106b422 Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dave@treblig.org>
Date: Sat, 24 Jun 2023 22:03:02 +0100
Subject: [PATCH] rusticl/device: Stash timestamp availability

Check if the device claims to have timestamps and a valid resolution
and stash it in the device.

Signed-off-by: Dr. David Alan Gilbert <dave@treblig.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23639>
---
 src/gallium/frontends/rusticl/core/device.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/gallium/frontends/rusticl/core/device.rs b/src/gallium/frontends/rusticl/core/device.rs
index 83b121f3cb0..af9680d8620 100644
--- a/src/gallium/frontends/rusticl/core/device.rs
+++ b/src/gallium/frontends/rusticl/core/device.rs
@@ -37,6 +37,7 @@ pub struct Device {
     pub clc_versions: Vec<cl_name_version>,
     pub custom: bool,
     pub embedded: bool,
+    pub has_timestamp: bool, // Cached to keep API fast
     pub extension_string: String,
     pub extensions: Vec<cl_name_version>,
     pub spirv_extensions: Vec<CString>,
@@ -198,6 +199,7 @@ impl Device {
             clc_versions: Vec::new(),
             custom: false,
             embedded: false,
+            has_timestamp: false,
             extension_string: String::from(""),
             extensions: Vec::new(),
             spirv_extensions: Vec::new(),
@@ -214,6 +216,10 @@ impl Device {
         // check if we have to report it as a custom device
         d.custom = d.check_custom();
 
+        let cap_timestamp = d.screen.param(pipe_cap::PIPE_CAP_QUERY_TIMESTAMP);
+        let cap_timestamp_res = d.timer_resolution();
+        d.has_timestamp = cap_timestamp != 0 && cap_timestamp_res > 0;
+
         // query supported extensions
         d.fill_extensions();
 
@@ -850,6 +856,10 @@ impl Device {
         self.screen.param(pipe_cap::PIPE_CAP_SYSTEM_SVM) == 1
     }
 
+    pub fn timer_resolution(&self) -> usize {
+        self.screen.param(pipe_cap::PIPE_CAP_TIMER_RESOLUTION) as usize
+    }
+
     pub fn unified_memory(&self) -> bool {
         self.screen.param(pipe_cap::PIPE_CAP_UMA) == 1
     }