From nobody Mon Feb 9 16:08:23 2026 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (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 1FB50266F1B for ; Mon, 24 Mar 2025 18:59:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742842800; cv=pass; b=hUAytmV0vUsMWbjw/+h1RRdY4DrFAq2QJoYxj6Zq7pLzon2MdSt4HE+W+x1yk8n//4HhivmD23uonwO7cijeUa+Hd6W9rEgQlYmr5bqguU7ChoinedBnGiZiVZrToB3P/ixhmL6H4htYhakxKaqDbInjusGpLVDh2UnNmvK3B8s= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742842800; c=relaxed/simple; bh=6AAE4XwBYH7Hk3PCsa417Knp5gssag6xZ/Y33Z+jh3I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=RhZ5wUEFIuBgTx8twUOa6r0PubcFHFZuedY2r96E+TyDFIVGxPfriOzyeGcrmPZWLS/AUCx2tBdovDn97x80w81za3/w+SDVnU++bv6oXpvdRtwpx5CF2ZK/9oM/8Vl3kWFBqouAnuYAjwJBb5fkOUROspAfOanhq2TW6CQT1ss= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=ariel.dalessandro@collabora.com header.b=cO64ugO4; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=ariel.dalessandro@collabora.com header.b="cO64ugO4" ARC-Seal: i=1; a=rsa-sha256; t=1742842774; cv=none; d=zohomail.com; s=zohoarc; b=BoRCzjIFldMuc/a6uQYiOIj7Xq0iufNoMKCQy6ROpdVtA0j3FvwdKakmFs8YDxrHf+ZNRE85aGajqD5JNtM/sFs2vYvqBgDer3EXQxnTbnOazzZhU0F+Q/w727ix/0PmdRusSinG3VMkvB+xEsF2Gv59/LWtxH6NGVJ96FeOTW8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1742842774; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=PFJTcCbD3E4H+S0hUP75IrBoIFbNnQ/Q1nSq47W+r74=; b=AYn+WRlOuiS7a94agR3+2K+wevmdLx0WmfuWfMcvKGr7oXQWwcZWtatT1GP/TlrxAUwX7A7E0GjiGfvFCDGOPprgN/s2/tZxu18WOCUR0Zdu2kwy3lc1SgpqzzQ7q0cmhweMKgHLzSppP+PwqqdjNSm2u8ocyWHY4PFdVIfa0Xg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=ariel.dalessandro@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1742842774; s=zohomail; d=collabora.com; i=ariel.dalessandro@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=PFJTcCbD3E4H+S0hUP75IrBoIFbNnQ/Q1nSq47W+r74=; b=cO64ugO4k+sOjIvBPdT8DKBuljGkeTVquQ3GymHIGGOAxbt5FXQbf4LccdzONZPz BuTexm4izpqMhEIRCYlbsPmZkUl3o6eUwGNV9EIi3I7zG9JmnAUxQtgInHB5ug0KAcm OiX8LO5kfjQWFAqpDO7N61cbYPTfQaJBYR942r04= Received: by mx.zohomail.com with SMTPS id 1742842771637557.8226679941961; Mon, 24 Mar 2025 11:59:31 -0700 (PDT) From: Ariel D'Alessandro To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: boris.brezillon@collabora.com, robh@kernel.org, steven.price@arm.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, kernel@collabora.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, sjoerd@collabora.com, angelogioacchino.delregno@collabora.com, Ariel D'Alessandro , =?UTF-8?q?Adri=C3=A1n=20Larumbe?= Subject: [PATCH v5 1/6] drm/panfrost: Set IOMMU_CACHE flag Date: Mon, 24 Mar 2025 15:57:56 -0300 Message-ID: <20250324185801.168664-2-ariel.dalessandro@collabora.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250324185801.168664-1-ariel.dalessandro@collabora.com> References: <20250324185801.168664-1-ariel.dalessandro@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Panfrost does not support uncached mappings, so flag them properly. Also flag the pages that are mapped as response to a page fault as cached. Signed-off-by: Boris Brezillon Signed-off-by: Ariel D'Alessandro Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Steven Price Reviewed-by: Adri=C3=A1n Larumbe --- drivers/gpu/drm/panfrost/panfrost_mmu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panf= rost/panfrost_mmu.c index b91019cd5acb..9e6f198ef5c1 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -327,7 +327,7 @@ int panfrost_mmu_map(struct panfrost_gem_mapping *mappi= ng) struct drm_gem_object *obj =3D &shmem->base; struct panfrost_device *pfdev =3D to_panfrost_device(obj->dev); struct sg_table *sgt; - int prot =3D IOMMU_READ | IOMMU_WRITE; + int prot =3D IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE; =20 if (WARN_ON(mapping->active)) return 0; @@ -528,7 +528,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_= device *pfdev, int as, goto err_map; =20 mmu_map_sg(pfdev, bomapping->mmu, addr, - IOMMU_WRITE | IOMMU_READ | IOMMU_NOEXEC, sgt); + IOMMU_WRITE | IOMMU_READ | IOMMU_CACHE | IOMMU_NOEXEC, sgt); =20 bomapping->active =3D true; bo->heap_rss_size +=3D SZ_2M; --=20 2.49.0