[PATCH i-g-t v3 04/10] tests/imagination: Add GPU ID test

[Robert Mazur <robert.mazur@imgtec.com>]

From: Frank Binns <frank.binns@imgtec.com>

Add a basic GPU ID validation subtest.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Signed-off-by: Donald Robson <donald.robson@imgtec.com>
Signed-off-by: Robert Mazur <robert.mazur@imgtec.com>
---
 tests/imagination/meson.build    |  1 +
 tests/imagination/pvr_gpu_info.c | 54 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+)

diff --git a/tests/imagination/meson.build b/tests/imagination/meson.build
index 62930da2b..c5899972b 100644
--- a/tests/imagination/meson.build
+++ b/tests/imagination/meson.build
@@ -1,5 +1,6 @@
 pvr_progs = [ 'pvr_dev_query',
 	      'pvr_gem',
+	      'pvr_gpu_info',
 	    ]
 
 pvr_deps = test_deps
diff --git a/tests/imagination/pvr_gpu_info.c b/tests/imagination/pvr_gpu_info.c
new file mode 100644
index 000000000..24ab18491
--- /dev/null
+++ b/tests/imagination/pvr_gpu_info.c
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0 or MIT
+/* Copyright (c) 2026 Imagination Technologies Ltd. All Rights Reserved */
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "igt.h"
+#include "igt_pvr.h"
+
+#include "pvr_drm.h"
+
+IGT_TEST_DESCRIPTION("Check that igt/imagination knows about this GPU ID");
+
+static bool
+has_known_gpu_id(int fd, const struct drm_pvr_dev_query_gpu_info *gpu_info)
+{
+#define PVR_BVNC_ID(b, v, n, c) \
+	(((uint64_t)(b) << 48) | \
+	((uint64_t)(v) << 32) | \
+	((uint64_t)(n) << 16) | \
+	((uint64_t)(c)))
+
+	switch (gpu_info->gpu_id) {
+	case PVR_BVNC_ID(4, 40, 2, 51):
+	case PVR_BVNC_ID(33, 15, 11, 3):
+	case PVR_BVNC_ID(36, 53, 104, 796):
+		break;
+	default:
+		igt_warn("Unknown GPU ID: 0x%016llx\n", gpu_info->gpu_id);
+		return false;
+	}
+#undef PVR_BVNC_ID
+
+	igt_info("GPU BVNC: %u.%u.%u.%u\n",
+		 (unsigned int)(gpu_info->gpu_id >> 48 & 0xffff),
+		 (unsigned int)(gpu_info->gpu_id >> 32 & 0xffff),
+		 (unsigned int)(gpu_info->gpu_id >> 16 & 0xffff),
+		 (unsigned int)(gpu_info->gpu_id & 0xffff));
+
+	return true;
+}
+
+int igt_simple_main()
+{
+	int fd = drm_open_driver(DRIVER_POWERVR);
+	struct drm_pvr_dev_query_gpu_info gpu_info = {0};
+
+	igt_pvr_ioctl_dev_query(fd, DRM_PVR_DEV_QUERY_GPU_INFO_GET,
+				sizeof(gpu_info), &gpu_info, 0);
+
+	igt_assert(has_known_gpu_id(fd, &gpu_info));
+	igt_assert_neq(gpu_info.num_phantoms, 0);
+}

-- 
2.43.0