From nobody Sun Feb 8 15:46:25 2026 Received: from rtg-sunil-navi33.amd.com (unknown [165.204.156.251]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 81FBA3D986 for ; Mon, 11 Mar 2024 12:22:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=165.204.156.251 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710159745; cv=none; b=bB4q9rUYD1kPZ8NDI2f6qXqG/yZP+7G1+vCg41toYyIg4nC+w1DFtLtrjE5iqdDHnliyulebysDB0KtLa0sG2AdprzffXAUgdCQV8Rzl6sP25Hy+r/AiQxBGYyLVCRC8cy+ovxcGBUI9eez9fXwDyflzTCxTEvnQDSPFd43cQVQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710159745; c=relaxed/simple; bh=3lwYZCW9ioO9JlGldgEGKMmH+XHohLODrXZUv4HVftA=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=AHaI9LkRypW9iI5T2Rke9zSDvBR4FbD0v9XVqWm/eLsEVj7XEiWCdEDuB/0o4WAh1iKxTI5eK/zEYswCvZALzMTI0f+HUEfgj5tSdVkNJyXhaSl/OBKzwNi9eB5/oErZeqIWAisyIJeZyt6EWL6KH9F9sr2IXReFy85L/ojilac= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amd.com; spf=none smtp.mailfrom=rtg-sunil-navi33.amd.com; arc=none smtp.client-ip=165.204.156.251 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=rtg-sunil-navi33.amd.com Received: from rtg-sunil-navi33.amd.com (localhost [127.0.0.1]) by rtg-sunil-navi33.amd.com (8.15.2/8.15.2/Debian-22ubuntu3) with ESMTP id 42BCMD8E013733; Mon, 11 Mar 2024 17:52:13 +0530 Received: (from sunil@localhost) by rtg-sunil-navi33.amd.com (8.15.2/8.15.2/Submit) id 42BCMDq0013732; Mon, 11 Mar 2024 17:52:13 +0530 From: Sunil Khatri To: Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , Shashank Sharma Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Sunil Khatri Subject: [PATCH] drm/amdgpu: add ring buffer information in devcoredump Date: Mon, 11 Mar 2024 17:52:12 +0530 Message-Id: <20240311122212.13713-1-sunil.khatri@amd.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add relevant ringbuffer information such as rptr, wptr, ring name, ring size and also the ring contents for each ring on a gpu reset. Signed-off-by: Sunil Khatri --- drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c b/drivers/gpu/drm/am= d/amdgpu/amdgpu_reset.c index 6d059f853adc..1992760039da 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c @@ -215,6 +215,27 @@ amdgpu_devcoredump_read(char *buffer, loff_t offset, s= ize_t count, fault_info->status); } =20 + drm_printf(&p, "Ring buffer information\n"); + for (int i =3D 0; i < coredump->adev->num_rings; i++) { + int j =3D 0; + struct amdgpu_ring *ring =3D coredump->adev->rings[i]; + + drm_printf(&p, "ring name: %s\n", ring->name); + drm_printf(&p, "Rptr: 0x%llx Wptr: 0x%llx\n", + amdgpu_ring_get_rptr(ring) & ring->buf_mask, + amdgpu_ring_get_wptr(ring) & ring->buf_mask); + drm_printf(&p, "Ring size in dwords: %d\n", + ring->ring_size / 4); + drm_printf(&p, "Ring contents\n"); + drm_printf(&p, "Offset \t Value\n"); + + while (j < ring->ring_size) { + drm_printf(&p, "0x%x \t 0x%x\n", j, ring->ring[j/4]); + j +=3D 4; + } + drm_printf(&p, "Ring dumped\n"); + } + if (coredump->reset_vram_lost) drm_printf(&p, "VRAM is lost due to GPU reset!\n"); if (coredump->adev->reset_info.num_regs) { --=20 2.34.1