[PATCH v6 6/8] drm/etnaviv: Warn when probing on NPUs

From: Tomeu Vizoso
Date: Fri Dec 02 2022 - 06:53:15 EST


Userspace is still not making full use of the hardware, so we don't know
yet if changes to the UAPI won't be needed. Warn about it.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index 37018bc55810..3cbc82bbf8d4 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -765,6 +765,10 @@ int etnaviv_gpu_init(struct etnaviv_gpu *gpu)
goto fail;
}

+ if (gpu->identity.nn_core_count > 0)
+ dev_warn(gpu->dev, "etnaviv has been instantiated on a NPU, "
+ "for which the UAPI is still experimental\n");
+
/* Exclude VG cores with FE2.0 */
if (gpu->identity.features & chipFeatures_PIPE_VG &&
gpu->identity.features & chipFeatures_FE20) {
--
2.38.1