[Libva] [LIBVA_INTEL_DRIVER][PATCH 1/4] Query the kernel API to check the EU counts of GPU device

[Zhao Yakui]

This info can be used to configure the max EU threads of GPU device.
>eu_total * 6

Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
---
 src/intel_driver.c | 13 +++++++++++++
 src/intel_driver.h |  3 +++
 2 files changed, 16 insertions(+)

diff --git a/src/intel_driver.c b/src/intel_driver.c
index bb19401..a2c8c71 100644
--- a/src/intel_driver.c
+++ b/src/intel_driver.c
@@ -50,6 +50,12 @@ uint32_t g_intel_debug_option_flags = 0;
 #define LOCAL_I915_PARAM_HAS_HUC 42
 #endif
 
+#ifdef I915_PARAM_EU_TOTAL
+#define LOCAL_I915_PARAM_EU_TOTAL I915_PARAM_EU_TOTAL
+#else
+#define LOCAL_I915_PARAM_EU_TOTAL 34
+#endif
+
 static Bool
 intel_driver_get_param(struct intel_driver_data *intel, int param, int *value)
 {
@@ -142,6 +148,13 @@ intel_driver_init(VADriverContextP ctx)
     if (intel_driver_get_param(intel, LOCAL_I915_PARAM_HAS_HUC, &ret_value))
         intel->has_huc = !!ret_value;
 
+    intel->has_eu_flag = 0;
+    intel->eu_total = 0;
+    if (intel_driver_get_param(intel, LOCAL_I915_PARAM_EU_TOTAL, &ret_value)) {
+        intel->has_eu_flag = !!ret_value;
+        intel->eu_total = ret_value;
+    }
+
     intel_driver_get_revid(intel, &intel->revision);
     return true;
 }
diff --git a/src/intel_driver.h b/src/intel_driver.h
index dcdc03b..a02bfa8 100644
--- a/src/intel_driver.h
+++ b/src/intel_driver.h
@@ -182,6 +182,9 @@ struct intel_driver_data
     unsigned int has_vebox  : 1; /* Flag: has VEBOX unit */
     unsigned int has_bsd2   : 1; /* Flag: has the second BSD video ring unit */
     unsigned int has_huc    : 1; /* Flag: has a fully loaded HuC firmware? */
+    unsigned int has_eu_flag : 1; /* Flag: Kernel will return EU counts */
+
+    int eu_total;
 
     const struct intel_device_info *device_info;
 };
-- 
2.8.3