From patchwork Sat Jul 20 07:15:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 13737688 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 C9F2EC3DA49 for ; Sat, 20 Jul 2024 07:19:38 +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-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=lYTlPgixUduBTjBpEvV+SXDmJ2OZaQCVAay1WWmtXlc=; b=vJlTypT1V3Rer4saikCFP4uk9w eS0jys0myfx+tkiXx6aZwBT8v3qimWytK05IUVANE8SXc7O7NwWjBeivPAdaZDAt2p+Euu2/NARQ0 wdVKecdTmbayjOXFEqh450xwtbroBGXDg9IiS4MGHIORt092+9dKV4SEiUQNdZFxM8ONCz3XvUir9 PnT9qJ3sXxHiLwD7f+Eyh3eu7kvBZw27EdbNY7kF7S3si9qF1DwKPLJ6ANeO+ycNpmIRXSJkkSu8Z fRshYdL887CfwAX29mOO6O+nM/SLP+arPsPDwXs8IOk8+9atZO6s1HokeU6vBk3BAWUSShrXS6NfF jFODPrfA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sV4NM-00000004dS9-0Rxs; Sat, 20 Jul 2024 07:19:28 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sV4KY-00000004c8k-1zQs; Sat, 20 Jul 2024 07:16:36 +0000 X-UUID: fbc3f4f2466711ef955bff358274dad2-20240720 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=lYTlPgixUduBTjBpEvV+SXDmJ2OZaQCVAay1WWmtXlc=; b=kJUnh10f0W+mtyIX0lb4S460qowbT9MFzp6plaASeJWr6ZBB8C5dqtWQSlP5NmjySI8icuKuAg+7QqaLl9gytwLd+upK8giAtQm9uSt/idJEGe+QjiYFl/0q/R+opfO0wa0z87CQd7LGH3VHNrLQVSS14XbMcWEYPyaEAg06q/M=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.40,REQID:7051c02b-e4e6-4140-a7a6-a83ebe1effec,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:ba885a6,CLOUDID:9414b4d1-436f-4604-ad9d-558fa44a3bbe,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1, SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: fbc3f4f2466711ef955bff358274dad2-20240720 Received: from mtkmbs14n1.mediatek.inc [(172.21.101.75)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 979372573; Sat, 20 Jul 2024 00:16:29 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by MTKMBS09N2.mediatek.inc (172.21.101.94) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Sat, 20 Jul 2024 00:16:26 -0700 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Sat, 20 Jul 2024 15:16:25 +0800 From: Yunfei Dong To: Jeffrey Kardatzke , =?utf-8?q?N=C3=ADcolas_F_=2E_?= =?utf-8?q?R_=2E_A_=2E_Prado?= , Nathan Hebert , Nicolas Dufresne , Hans Verkuil , AngeloGioacchino Del Regno , Benjamin Gaignard , Sebastian Fricke , Tomasz Figa , Mauro Carvalho Chehab , Marek Szyprowski CC: Chen-Yu Tsai , Yong Wu , Hsin-Yi Wang , Fritz Koenig , Daniel Vetter , Steve Cho , Yunfei Dong , Sumit Semwal , Brian Starkey , John Stultz , "T . J . Mercier" , =?utf-8?q?Christian_K=C3=B6nig?= , Matthias Brugger , , , , , , Subject: [PATCH v7 12/28] media: mediatek: vcodec: add interface to allocate/free secure memory Date: Sat, 20 Jul 2024 15:15:50 +0800 Message-ID: <20240720071606.27930-13-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240720071606.27930-1-yunfei.dong@mediatek.com> References: <20240720071606.27930-1-yunfei.dong@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240720_001634_631988_BA2FDE1B X-CRM114-Status: GOOD ( 16.72 ) 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 Calling dma heap interface to allocate/free secure memory when playing secure video. Signed-off-by: Yunfei Dong --- .../media/platform/mediatek/vcodec/Kconfig | 1 + .../mediatek/vcodec/common/mtk_vcodec_util.c | 117 +++++++++++++++++- .../mediatek/vcodec/common/mtk_vcodec_util.h | 8 +- 3 files changed, 122 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/mediatek/vcodec/Kconfig b/drivers/media/platform/mediatek/vcodec/Kconfig index ce63e1fa6118..f4c105b1d39b 100644 --- a/drivers/media/platform/mediatek/vcodec/Kconfig +++ b/drivers/media/platform/mediatek/vcodec/Kconfig @@ -37,6 +37,7 @@ config VIDEO_MEDIATEK_VCODEC config VIDEO_MEDIATEK_VCODEC_TEE bool "MediaTek Video Codec TEE driver" + depends on DMABUF_HEAPS depends on OPTEE depends on TEE select VIDEO_MEDIATEK_VCODEC diff --git a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c index fc4e34c29192..a77832f8cf46 100644 --- a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c +++ b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c @@ -5,9 +5,11 @@ * Tiffany Lin */ +#include #include #include #include +#include #include "../decoder/mtk_vcodec_dec_drv.h" #include "../encoder/mtk_vcodec_enc_drv.h" @@ -45,7 +47,7 @@ int mtk_vcodec_write_vdecsys(struct mtk_vcodec_dec_ctx *ctx, unsigned int reg, } EXPORT_SYMBOL(mtk_vcodec_write_vdecsys); -int mtk_vcodec_mem_alloc(void *priv, struct mtk_vcodec_mem *mem) +static int mtk_vcodec_mem_alloc_nor(void *priv, struct mtk_vcodec_mem *mem) { enum mtk_instance_type inst_type = *((unsigned int *)priv); struct platform_device *plat_dev; @@ -76,9 +78,71 @@ int mtk_vcodec_mem_alloc(void *priv, struct mtk_vcodec_mem *mem) return 0; } -EXPORT_SYMBOL(mtk_vcodec_mem_alloc); -void mtk_vcodec_mem_free(void *priv, struct mtk_vcodec_mem *mem) +static int mtk_vcodec_mem_alloc_sec(struct mtk_vcodec_dec_ctx *ctx, struct mtk_vcodec_mem *mem) +{ +#if IS_ENABLED(CONFIG_DMABUF_HEAPS) + struct device *dev = &ctx->dev->plat_dev->dev; + struct dma_buf *dma_buffer; + struct dma_heap *dma_heap; + struct dma_buf_attachment *attach; + struct sg_table *sgt; + unsigned long size = mem->size; + + if (!size) + return -EINVAL; + + dma_heap = dma_heap_find("restricted_mtk_cma"); + if (!dma_heap) { + mtk_v4l2_vdec_err(ctx, "dma heap find failed!"); + goto err_alloc_mem; + } + + dma_buffer = dma_heap_buffer_alloc(dma_heap, size, DMA_HEAP_VALID_FD_FLAGS, + DMA_HEAP_VALID_HEAP_FLAGS); + if (IS_ERR(dma_buffer)) { + mtk_v4l2_vdec_err(ctx, "dma heap alloc size=0x%lx failed!", size); + dma_heap_put(dma_heap); + goto err_alloc_mem; + } + dma_heap_put(dma_heap); + + attach = dma_buf_attach(dma_buffer, dev); + if (IS_ERR(attach)) { + mtk_v4l2_vdec_err(ctx, "dma attach size=0x%lx failed!", size); + dma_buf_put(dma_buffer); + goto err_alloc_mem; + } + + sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); + if (IS_ERR(sgt)) { + mtk_v4l2_vdec_err(ctx, "dma map attach size=0x%lx failed!", size); + dma_buf_detach(dma_buffer, attach); + dma_buf_put(dma_buffer); + goto err_alloc_mem; + } + + mem->dma_addr = sg_dma_address(sgt->sgl); + mem->dma_buf = dma_buffer; + mem->attach = attach; + mem->sgt = sgt; + + return 0; + +err_alloc_mem: + mem->attach = NULL; + mem->dma_buf = NULL; + mem->sgt = NULL; + mem->dma_addr = 0; + mem->size = 0; + + return -ENOMEM; +#else + return -EOPNOTSUPP; +#endif +} + +static void mtk_vcodec_mem_free_nor(void *priv, struct mtk_vcodec_mem *mem) { enum mtk_instance_type inst_type = *((unsigned int *)priv); struct platform_device *plat_dev; @@ -111,6 +175,52 @@ void mtk_vcodec_mem_free(void *priv, struct mtk_vcodec_mem *mem) mem->dma_addr = 0; mem->size = 0; } + +static void mtk_vcodec_mem_free_sec(struct mtk_vcodec_mem *mem) +{ +#if IS_ENABLED(CONFIG_DMABUF_HEAPS) + dma_buf_unmap_attachment(mem->attach, mem->sgt, DMA_BIDIRECTIONAL); + dma_buf_detach(mem->dma_buf, mem->attach); + dma_buf_put(mem->dma_buf); + + mem->attach = NULL; + mem->dma_buf = NULL; + mem->sgt = NULL; + mem->dma_addr = 0; + mem->size = 0; +#endif +} + +int mtk_vcodec_mem_alloc(void *priv, struct mtk_vcodec_mem *mem) +{ + enum mtk_instance_type inst_type = *((unsigned int *)priv); + + if (inst_type == MTK_INST_DECODER) { + struct mtk_vcodec_dec_ctx *dec_ctx = priv; + + if (dec_ctx->is_secure_playback) + return mtk_vcodec_mem_alloc_sec(dec_ctx, mem); + } + + return mtk_vcodec_mem_alloc_nor(priv, mem); +} +EXPORT_SYMBOL(mtk_vcodec_mem_alloc); + +void mtk_vcodec_mem_free(void *priv, struct mtk_vcodec_mem *mem) +{ + enum mtk_instance_type inst_type = *((unsigned int *)priv); + + if (inst_type == MTK_INST_DECODER) { + struct mtk_vcodec_dec_ctx *dec_ctx = priv; + + if (dec_ctx->is_secure_playback) { + mtk_vcodec_mem_free_sec(mem); + return; + } + } + + mtk_vcodec_mem_free_nor(priv, mem); +} EXPORT_SYMBOL(mtk_vcodec_mem_free); void *mtk_vcodec_get_hw_dev(struct mtk_vcodec_dec_dev *dev, int hw_idx) @@ -172,3 +282,4 @@ EXPORT_SYMBOL(mtk_vcodec_get_curr_ctx); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("Mediatek video codec driver"); +MODULE_IMPORT_NS(DMA_BUF); diff --git a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.h b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.h index 85f615cdd4d3..0a264e4f52bf 100644 --- a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.h +++ b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.h @@ -16,8 +16,14 @@ struct mtk_vcodec_mem { size_t size; - void *va; + union { + void *va; + struct dma_buf *dma_buf; + }; dma_addr_t dma_addr; + + struct dma_buf_attachment *attach; + struct sg_table *sgt; }; struct mtk_vcodec_fb {