linux-kernel - [PATCH 05/14] media: mediatek: vcodec: using encoder's device to alloc/free memory

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Date:   Mon, 11 Sep 2023 20:59:27 +0800
From:   Yunfei Dong <yunfei.dong@...iatek.com>
To:     Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>,
        Nicolas Dufresne <nicolas.dufresne@...labora.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        Nathan Hebert <nhebert@...omium.org>
CC:     Chen-Yu Tsai <wenst@...omium.org>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Fritz Koenig <frkoenig@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        "Steve Cho" <stevecho@...omium.org>,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH 05/14] media: mediatek: vcodec: using encoder's device to alloc/free memory

Using encoder's device to allocate/free secure memory calling:
mtk_vcodec_mem_alloc/mtk_vcodec_mem_free, not decoder's.

'Fixes: 01abf5fbb081c ("media: mediatek: vcodec: separate struct 'mtk_vcodec_ctx'")'
Signed-off-by: Yunfei Dong <yunfei.dong@...iatek.com>
---
 .../mediatek/vcodec/common/mtk_vcodec_util.c  | 66 ++++++++++++++++++-
 1 file changed, 64 insertions(+), 2 deletions(-)

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 908602031fd0..62bb7290c56d 100644
--- a/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c
+++ b/drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_util.c
@@ -45,7 +45,7 @@ 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_dec_alloc(void *priv, struct mtk_vcodec_mem *mem)
 {
 	unsigned long size = mem->size;
 	struct mtk_vcodec_dec_ctx *ctx = priv;
@@ -64,9 +64,39 @@ int mtk_vcodec_mem_alloc(void *priv, struct mtk_vcodec_mem *mem)
 
 	return 0;
 }
+
+static int mtk_vcodec_mem_enc_alloc(void *priv, struct mtk_vcodec_mem *mem)
+{
+	unsigned long size = mem->size;
+	struct mtk_vcodec_enc_ctx *ctx = priv;
+	struct device *dev = &ctx->dev->plat_dev->dev;
+
+	mem->va = dma_alloc_coherent(dev, size, &mem->dma_addr, GFP_KERNEL);
+	if (!mem->va) {
+		mtk_v4l2_venc_err(ctx, "%s dma_alloc size=%ld failed!", dev_name(dev), size);
+		return -ENOMEM;
+	}
+
+	mtk_v4l2_venc_dbg(3, ctx, "[%d]  - va      = %p", ctx->id, mem->va);
+	mtk_v4l2_venc_dbg(3, ctx, "[%d]  - dma     = 0x%lx", ctx->id,
+			  (unsigned long)mem->dma_addr);
+	mtk_v4l2_venc_dbg(3, ctx, "[%d]    size = 0x%lx", ctx->id, size);
+
+	return 0;
+}
+
+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_ENCODER)
+		return mtk_vcodec_mem_enc_alloc(priv, mem);
+	else
+		return mtk_vcodec_mem_dec_alloc(priv, mem);
+}
 EXPORT_SYMBOL(mtk_vcodec_mem_alloc);
 
-void mtk_vcodec_mem_free(void *priv, struct mtk_vcodec_mem *mem)
+static void mtk_vcodec_mem_dec_free(void *priv, struct mtk_vcodec_mem *mem)
 {
 	unsigned long size = mem->size;
 	struct mtk_vcodec_dec_ctx *ctx = priv;
@@ -87,6 +117,38 @@ void mtk_vcodec_mem_free(void *priv, struct mtk_vcodec_mem *mem)
 	mem->dma_addr = 0;
 	mem->size = 0;
 }
+
+static void mtk_vcodec_mem_enc_free(void *priv, struct mtk_vcodec_mem *mem)
+{
+	unsigned long size = mem->size;
+	struct mtk_vcodec_enc_ctx *ctx = priv;
+	struct device *dev = &ctx->dev->plat_dev->dev;
+
+	if (!mem->va) {
+		mtk_v4l2_venc_err(ctx, "%s dma_free size=%ld failed!", dev_name(dev), size);
+		return;
+	}
+
+	mtk_v4l2_venc_dbg(3, ctx, "[%d]  - va      = %p", ctx->id, mem->va);
+	mtk_v4l2_venc_dbg(3, ctx, "[%d]  - dma     = 0x%lx", ctx->id,
+			  (unsigned long)mem->dma_addr);
+	mtk_v4l2_venc_dbg(3, ctx, "[%d]    size = 0x%lx", ctx->id, size);
+
+	dma_free_coherent(dev, size, mem->va, mem->dma_addr);
+	mem->va = NULL;
+	mem->dma_addr = 0;
+	mem->size = 0;
+}
+
+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_ENCODER)
+		mtk_vcodec_mem_enc_free(priv, mem);
+	else
+		mtk_vcodec_mem_dec_free(priv, mem);
+}
 EXPORT_SYMBOL(mtk_vcodec_mem_free);
 
 void *mtk_vcodec_get_hw_dev(struct mtk_vcodec_dec_dev *dev, int hw_idx)
-- 
2.18.0