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Sender: Tomeu Vizoso <tomeu.vizoso@gmail.com>
From:   Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc:     italonicola@collabora.com,
        Tomeu Vizoso <tomeu.vizoso@collabora.com>,
        Lucas Stach <l.stach@pengutronix.de>,
        Russell King <linux+etnaviv@armlinux.org.uk>,
        Christian Gmeiner <christian.gmeiner@gmail.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        etnaviv@lists.freedesktop.org (moderated list:DRM DRIVERS FOR VIVANTE
        GPU IP),
        dri-devel@lists.freedesktop.org (open list:DRM DRIVERS FOR VIVANTE GPU
        IP), linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v4 7/7] drm/etnaviv: Warn when probing on NPUs
Date:   Thu,  1 Dec 2022 10:21:28 +0100
Message-Id: <20221201092131.62867-8-tomeu.vizoso@collabora.com>
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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@collabora.com>
---
 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