From nobody Mon Feb 9 23:43:00 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 5BACB1D6DC5 for ; Mon, 10 Mar 2025 20:00:20 +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=1741636821; cv=pass; b=tjaaUw4b4koSPghSqphJGE3ZdQmT3bBrIFQzT+Mez4MIRpyZI1zfL6ccEErRMjLNfR0m3D6Ar4rt7I9zUtlteiEmk74CYCwAKYJpJ6zhFSAvza1dHYcjLChCThRPLww+xfXNFZvu66/bfS4iQzP5k1Szt2ihNJ6zU5sHrDSPsow= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741636821; c=relaxed/simple; bh=icVzu0P56YexPcBpsrn3nRweSxvIYRZleDuf27NcNAI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Zzow2CCrpmgoEJ+v+mzcD3zwWbrK3M1pMjb9Gdv+WYE+IYxz0rxEVAUoE256pJXfN/4QlH1X4c/Ki0rg8V8gRsEcZz6GU9wkZ96ZSWNmDcsY7O7a4yTRQ00nqxuRShIjwRugRfwkH9c4nu8OeSStk26s7Y82//4/LesTX3RUozY= 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=XI445Uks; 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="XI445Uks" ARC-Seal: i=1; a=rsa-sha256; t=1741636795; cv=none; d=zohomail.com; s=zohoarc; b=dTbDcDa5VbZ+n/fO3/EG23vIfbAUbjH25Kvi/6G6UUkf9B43GNk7v0B7XujY+vgRKc3ULX22Xv3G4igq7lXUoOo/WQurSmKjK3HqG6bV+YDybro145U301lWUoF7vXQeAvx2aiZvFlAHswL8uk0nZO+XBJlTBQNCkkKvLNutkgw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1741636795; 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=zCHAjF0Z7uci82elReH6b009mfaaTOtclxm2AxNJYSk=; b=Zor3RI1wzM02pifNC+UKbVhP3LMu419DTQ6JeJaQXGI5c4XaYrBC2B0SdsNGfsgCc9DWhMS20zCfTKuJjtATdDv3exkFIJFd3q9Oc1gPKBLQOgPlYFUqAGEowUm8IT8x/gHOSohvzqJXBFjhlgnfa1tPcqB5XElnEQPPwu38eRo= 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=1741636795; 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=zCHAjF0Z7uci82elReH6b009mfaaTOtclxm2AxNJYSk=; b=XI445Uks/5ycTftE+M/lmMubk4qJ8c0Uwss88U2YMIF6ZD4lb49GiMzzbHjg7q8R BfE3kRH59JTzpaClDZF2aD5Nt9r2z2fDIv7Nxje+yCiBZlZwIurfowMnOcwedYI8EQ7 8Y7qkXZXIlQThT8OIqSbQU4Jp4371e6FP0p7cY3s= Received: by mx.zohomail.com with SMTPS id 1741636791693559.3943284745002; Mon, 10 Mar 2025 12:59:51 -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, Ariel D'Alessandro Subject: [PATCH v1 1/6] drm/panfrost: Set IOMMU_CACHE flag Date: Mon, 10 Mar 2025 16:59:16 -0300 Message-ID: <20250310195921.157511-2-ariel.dalessandro@collabora.com> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250310195921.157511-1-ariel.dalessandro@collabora.com> References: <20250310195921.157511-1-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