From patchwork Mon Mar 10 19:59:16 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ariel D'Alessandro X-Patchwork-Id: 14010599 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 27506C282DE for ; Mon, 10 Mar 2025 20:03:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=zCHAjF0Z7uci82elReH6b009mfaaTOtclxm2AxNJYSk=; b=3lM8bW6KgkaE5DRpDBiKtCKBp2 DLfn6WUCMIb+mZfkpxHY6VyU2MU8ywi5GvdKRBo1kb4/waOtPGaX3wXusBR0pSCwlDovO/3VxRuyR WxODaTXZwr0StvF5h+10uHfx6g3NHHfkmJI1PT5C26HB+PEuBNUwXBHzRXZqCxDVUH2A2jdN8XqEg A0SPOhuGdUkIC88elnDSkKvUiVQoYATxlMxY/zZ/7Hglwl1lXf51IcNR1PLBcbURdpS/yRBZzLl59 F+HuaCfeSjOr+QWI6pL0Az9wC+7PYgp/gpuzUJtahWCF3OZb1e0aQGGG/SG9S96XgvmFOuchD0khk O6B1AS+A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1trjLU-00000003nqP-2Tfq; Mon, 10 Mar 2025 20:03:28 +0000 Received: from sender4-pp-f112.zoho.com ([136.143.188.112]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1trjIK-00000003n8s-1PaY; Mon, 10 Mar 2025 20:00:13 +0000 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> MIME-Version: 1.0 X-ZohoMailClient: External X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250310_130012_441135_2A086B07 X-CRM114-Status: GOOD ( 10.58 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- 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/panfrost/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 *mapping) struct drm_gem_object *obj = &shmem->base; struct panfrost_device *pfdev = to_panfrost_device(obj->dev); struct sg_table *sgt; - int prot = IOMMU_READ | IOMMU_WRITE; + int prot = IOMMU_READ | IOMMU_WRITE | IOMMU_CACHE; 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; mmu_map_sg(pfdev, bomapping->mmu, addr, - IOMMU_WRITE | IOMMU_READ | IOMMU_NOEXEC, sgt); + IOMMU_WRITE | IOMMU_READ | IOMMU_CACHE | IOMMU_NOEXEC, sgt); bomapping->active = true; bo->heap_rss_size += SZ_2M;