From patchwork Wed Dec 6 08:15:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfei Dong X-Patchwork-Id: 13481192 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 262F2C4167B for ; Wed, 6 Dec 2023 08:16:32 +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=AEOnbt4r9fsU1FaBhQrHBhHtJ6EFlT2KKfJtqxzhvuE=; b=pgNfqX1+TQLc1LQXJZM2C+yeGj b4kKxBl1xifYObeoEN/vbpue/KhEg0qNf1/ddqQRHemdwlnWIGM2IsQqUeWx6+WgRTPGvRI7pukX0 kqVelWDykhiHTccD7O96XWQdUaj0IJK+PekAk/oKmHA/BspIzH4keUlvwYno71Hv6SZL2yPUjVRp1 5tcs7ogbLrA4bE8dAHtwg/CUAkfsAjw+j//YPiu7BSElURB4SHHjf+sd79qR8cH/EZcSg5lyCRdOy r9SaTd304rVui++/gLuvEkyx5b4Jqhqmu+OH2hnjdcHYjhq7rxkEHl5DDEP/OFgoF9Do+bzrPZNAL RZSXWsZA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rAn54-009O08-0P; Wed, 06 Dec 2023 08:16:30 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rAn4u-009Nir-2T; Wed, 06 Dec 2023 08:16:25 +0000 X-UUID: baffd900940f11ee958cff29c719f35b-20231206 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=AEOnbt4r9fsU1FaBhQrHBhHtJ6EFlT2KKfJtqxzhvuE=; b=ApxelhEIPVXx9gy07iAqk1R61gZSGLQQ8Og37yQSVzXxlMiC+4Ain1BmhVa1dA7iPHvRgmBqZiWuzAhC/HNSYxn4WxIYP7F4dOnzy+6c/M8b1sI5GM2uaXGFVwyV3XfcPa50YAV7Onrw5140ILCsswbpDrxkRnVbtFOCN0gKIIM=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.34,REQID:6e4961fb-7a5e-4d36-be93-3184b031f9d0,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:abefa75,CLOUDID:987ae060-c89d-4129-91cb-8ebfae4653fc,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File: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 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: baffd900940f11ee958cff29c719f35b-20231206 Received: from mtkmbs14n2.mediatek.inc [(172.21.101.76)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 54292513; Wed, 06 Dec 2023 01:16:17 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 6 Dec 2023 16:15:55 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Wed, 6 Dec 2023 16:15:54 +0800 From: Yunfei Dong To: Jeffrey Kardatzke , =?utf-8?q?N=C3=ADcolas_F_=2E_?= =?utf-8?q?R_=2E_A_=2E_Prado?= , Nicolas Dufresne , Hans Verkuil , AngeloGioacchino Del Regno , Benjamin Gaignard , Nathan Hebert 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 v3,12/21] media: mediatek: vcodec: add interface to allocate/free secure memory Date: Wed, 6 Dec 2023 16:15:29 +0800 Message-ID: <20231206081538.17056-13-yunfei.dong@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231206081538.17056-1-yunfei.dong@mediatek.com> References: <20231206081538.17056-1-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-20231206_001620_837729_02AE34A2 X-CRM114-Status: GOOD ( 17.41 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Need to call 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 | 122 +++++++++++++++++- .../mediatek/vcodec/common/mtk_vcodec_util.h | 3 + 3 files changed, 123 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/mediatek/vcodec/Kconfig b/drivers/media/platform/mediatek/vcodec/Kconfig index bc8292232530..707865703e61 100644 --- a/drivers/media/platform/mediatek/vcodec/Kconfig +++ b/drivers/media/platform/mediatek/vcodec/Kconfig @@ -17,6 +17,7 @@ config VIDEO_MEDIATEK_VCODEC depends on VIDEO_MEDIATEK_VPU || !VIDEO_MEDIATEK_VPU depends on MTK_SCP || !MTK_SCP depends on MTK_SMI || (COMPILE_TEST && MTK_SMI=n) + depends on DMABUF_HEAPS select VIDEOBUF2_DMA_CONTIG select V4L2_MEM2MEM_DEV select VIDEO_MEDIATEK_VCODEC_VPU if VIDEO_MEDIATEK_VPU 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 9ce34a3b5ee6..2c44747f77a0 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) +{ + struct device *dev = &ctx->dev->plat_dev->dev; + struct dma_buf *dma_buffer; + struct dma_heap *vdec_heap; + struct dma_buf_attachment *attach; + struct sg_table *sgt; + unsigned long size = mem->size; + int ret = 0; + + if (!size) + return -EINVAL; + + vdec_heap = dma_heap_find("mtk_svp"); + if (!vdec_heap) { + mtk_v4l2_vdec_err(ctx, "dma heap find failed!"); + return -EPERM; + } + + dma_buffer = dma_heap_buffer_alloc(vdec_heap, size, DMA_HEAP_VALID_FD_FLAGS, + DMA_HEAP_VALID_HEAP_FLAGS); + if (IS_ERR_OR_NULL(dma_buffer)) { + mtk_v4l2_vdec_err(ctx, "dma heap alloc size=0x%lx failed!", size); + return PTR_ERR(dma_buffer); + } + + attach = dma_buf_attach(dma_buffer, dev); + if (IS_ERR_OR_NULL(attach)) { + mtk_v4l2_vdec_err(ctx, "dma attach size=0x%lx failed!", size); + ret = PTR_ERR(attach); + goto err_attach; + } + + sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); + if (IS_ERR_OR_NULL(sgt)) { + mtk_v4l2_vdec_err(ctx, "dma map attach size=0x%lx failed!", size); + ret = PTR_ERR(sgt); + goto err_sgt; + } + + mem->va = dma_buffer; + mem->dma_addr = (dma_addr_t)sg_dma_address((sgt)->sgl); + + if (!mem->va || !mem->dma_addr) { + mtk_v4l2_vdec_err(ctx, "dma buffer size=0x%lx failed!", size); + ret = -EPERM; + goto err_addr; + } + + mem->attach = attach; + mem->sgt = sgt; + + return 0; +err_addr: + dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL); +err_sgt: + dma_buf_detach(dma_buffer, attach); +err_attach: + dma_buf_put(dma_buffer); + + return ret; +} + +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 +175,57 @@ 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 (mem->sgt) + dma_buf_unmap_attachment(mem->attach, mem->sgt, DMA_BIDIRECTIONAL); + dma_buf_detach((struct dma_buf *)mem->va, mem->attach); + dma_buf_put((struct dma_buf *)mem->va); + + mem->attach = NULL; + mem->sgt = NULL; + mem->va = NULL; + mem->dma_addr = 0; + mem->size = 0; +} + +int mtk_vcodec_mem_alloc(void *priv, struct mtk_vcodec_mem *mem) +{ + enum mtk_instance_type inst_type = *((unsigned int *)priv); + int ret; + + if (inst_type == MTK_INST_DECODER) { + struct mtk_vcodec_dec_ctx *dec_ctx = priv; + + if (dec_ctx->is_secure_playback) { + ret = mtk_vcodec_mem_alloc_sec(dec_ctx, mem); + goto alloc_end; + } + } + + ret = mtk_vcodec_mem_alloc_nor(priv, mem); +alloc_end: + + return ret; +} +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 +287,4 @@ 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..22078e757ed0 100644 --- a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.h +++ b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.h @@ -18,6 +18,9 @@ struct mtk_vcodec_mem { size_t size; void *va; dma_addr_t dma_addr; + + struct dma_buf_attachment *attach; + struct sg_table *sgt; }; struct mtk_vcodec_fb {