From nobody Wed Dec 17 15:35:03 2025 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 E8B11239082 for ; Mon, 17 Mar 2025 12:43:03 +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=1742215385; cv=pass; b=Sm/Pdgffp/HLZxglvImSc4qei+AgV75PZFyLsf8gnMY1p/prno/QBKby1pFjo26Cx5h7d0pVDP+EPoSGosanYIIiPrO+gQkuorHf6lAd9gjwZd9C0wK7z+pibXXCgaYR/HMCHcwzCtToJ+wATFDQ4Sk8ddHqT/firO3h+lz2FUU= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742215385; c=relaxed/simple; bh=p++KVk3Fw8pgMe8xXWu7SiuG6QOWrS2JQmXG3WQYqmQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Yn19wuAHRlSFzmc61gn2sQO009DowkvW4haPeEjWSxhGBRkVr+1xb3K+TDUngE7qu0whF/zEhLFCjgtqWk/5PIymtvpBU1gu5PEwFAOJPfLJ7Du1xDtdiWRiGxxRomI5athTrtathoWBOGEKkjWZd1AFx4qv3TM2XFgduOJTPPY= 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=dacbRXwo; 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="dacbRXwo" ARC-Seal: i=1; a=rsa-sha256; t=1742215365; cv=none; d=zohomail.com; s=zohoarc; b=UtHINESV9YTxkr2/+vQCTAHdO++gSSJqmLPXPlChJocg7K4mPsmNo+YchOX0/sOv6tafgqypUTd85z8PaSrKJ2ZKqo85eUmD+dsjaB2jEQX6cZzO4LFb6cIwCJKssGeEW6trgH4JgsEaTTOnX7/Fg8wsJiOlIo5/G8t/t3IAocw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1742215365; h=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=ghqsESCSlYDpPWVp7MysrBKDg3K0+nOb0GO49Q1Vkh8=; b=e8hbFK0BobAV181EI8/EYUCHTnPIcEXROL4Wweo/5RrY6yey2t92I1c2DeJrw4pL/6evsBlunxNsykHfa1KCpx5uaPob6D5rZQGxdere786IsWXvrxUNHK/H1iNE+4qiw0ff2Jgbmn6BY1R92bNVz5P1TKI2ByNYguaE2+8+gg0= 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=1742215365; 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-Transfer-Encoding:Message-Id:Reply-To; bh=ghqsESCSlYDpPWVp7MysrBKDg3K0+nOb0GO49Q1Vkh8=; b=dacbRXwo2UICmQD7zrje2dDVP8xDaUYCZgquBXUUIRxpoOrbT0RCWx7jDWyD4jXz uXcARvBD1xL88K8qyAO4qYMLfSgAdTdrzdwoA4zSZMVgmVWqQfzHqjtg4cQusYBvIQD pI3t9IBDdPD2RPWZUGi6AuD8Hu1s0jsjZ/wyhZNA= Received: by mx.zohomail.com with SMTPS id 1742215364198105.23374534580853; Mon, 17 Mar 2025 05:42:44 -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 Subject: [PATCH v3 1/6] drm/panfrost: Set IOMMU_CACHE flag Date: Mon, 17 Mar 2025 09:40:39 -0300 Message-ID: <20250317124044.16257-2-ariel.dalessandro@collabora.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250317124044.16257-1-ariel.dalessandro@collabora.com> References: <20250317124044.16257-1-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-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Content-Type: text/plain; charset="utf-8" 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 --- 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 b91019cd5acb1..9e6f198ef5c1b 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 2.47.2