[v1,1/3] media: staging: tegra-vde: Support reference picture marking

Message ID	20211114222353.22435-2-digetx@gmail.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-media-owner@kernel.org> From: Dmitry Osipenko <digetx@gmail.com> To: Thierry Reding <thierry.reding@gmail.com>, Jonathan Hunter <jonathanh@nvidia.com>, Mauro Carvalho Chehab <mchehab@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Anton Bambura <jenneron@protonmail.com>, Hans Verkuil <hverkuil@xs4all.nl> Cc: linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/3] media: staging: tegra-vde: Support reference picture marking Date: Mon, 15 Nov 2021 01:23:51 +0300 Message-Id: <20211114222353.22435-2-digetx@gmail.com> In-Reply-To: <20211114222353.22435-1-digetx@gmail.com> References: <20211114222353.22435-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	Add NVIDIA Tegra114 support to video decoder driver \| expand [v1,0/3] Add NVIDIA Tegra114 support to video decoder driver [v1,1/3] media: staging: tegra-vde: Support reference picture marking [v1,2/3] media: staging: tegra-vde: Properly mark invalid entries [v1,3/3] media: staging: tegra-vde: Reorder misc device registration

diff --git a/drivers/staging/media/tegra-vde/vde.c b/drivers/staging/media/tegra-vde/vde.c index 859f60a70904..42da57f191ef 100644 --- a/drivers/staging/media/tegra-vde/vde.c +++ b/drivers/staging/media/tegra-vde/vde.c @@ -85,6 +85,92 @@ static int tegra_vde_wait_mbe(struct tegra_vde *vde) (tmp >= 0x10), 1, 100); } +static struct tegra_vde_bo * +tegra_vde_alloc_bo(struct tegra_vde *vde, enum dma_data_direction dma_dir, + size_t size) +{ + struct device *dev = vde->miscdev.parent; + struct tegra_vde_bo *bo; + int err; + + bo = kzalloc(sizeof(*bo), GFP_KERNEL); + if (!bo) + return NULL; + + bo->vde = vde; + bo->size = size; + bo->dma_dir = dma_dir; + bo->dma_attrs = DMA_ATTR_WRITE_COMBINE | + DMA_ATTR_NO_KERNEL_MAPPING; + + if (!vde->domain) + bo->dma_attrs |= DMA_ATTR_FORCE_CONTIGUOUS; + + bo->dma_cookie = dma_alloc_attrs(dev, bo->size, &bo->dma_handle, + GFP_KERNEL, bo->dma_attrs); + if (!bo->dma_cookie) { + dev_err(dev, "Failed to allocate DMA buffer of size: %zu\n", + bo->size); + goto free_bo; + } + + err = dma_get_sgtable_attrs(dev, &bo->sgt, bo->dma_cookie, + bo->dma_handle, bo->size, bo->dma_attrs); + if (err) { + dev_err(dev, "Failed to get DMA buffer SG table: %d\n", err); + goto free_attrs; + } + + err = dma_map_sgtable(dev, &bo->sgt, bo->dma_dir, bo->dma_attrs); + if (err) { + dev_err(dev, "Failed to map DMA buffer SG table: %d\n", err); + goto free_table; + } + + if (vde->domain) { + err = tegra_vde_iommu_map(vde, &bo->sgt, &bo->iova, bo->size); + if (err) { + dev_err(dev, "Failed to map DMA buffer IOVA: %d\n", err); + goto unmap_sgtable; + } + + bo->dma_addr = iova_dma_addr(&vde->iova, bo->iova); + } else { + bo->dma_addr = sg_dma_address(bo->sgt.sgl); + } + + return bo; + +unmap_sgtable: + dma_unmap_sgtable(dev, &bo->sgt, bo->dma_dir, bo->dma_attrs); +free_table: + sg_free_table(&bo->sgt); +free_attrs: + dma_free_attrs(dev, bo->size, bo->dma_cookie, bo->dma_handle, + bo->dma_attrs); +free_bo: + kfree(bo); + + return NULL; +} + +static void tegra_vde_free_bo(struct tegra_vde_bo *bo) +{ + struct tegra_vde *vde = bo->vde; + struct device *dev = vde->miscdev.parent; + + if (vde->domain) + tegra_vde_iommu_unmap(vde, bo->iova); + + dma_unmap_sgtable(dev, &bo->sgt, bo->dma_dir, bo->dma_attrs); + + sg_free_table(&bo->sgt); + + dma_free_attrs(dev, bo->size, bo->dma_cookie, bo->dma_handle, + bo->dma_attrs); + kfree(bo); +} + static int tegra_vde_setup_mbe_frame_idx(struct tegra_vde *vde, unsigned int refs_nb, bool setup_refs) @@ -425,6 +511,9 @@ static int tegra_vde_setup_hw_context(struct tegra_vde *vde, tegra_vde_writel(vde, bitstream_data_addr, vde->sxe, 0x6C); + if (vde->soc->supports_ref_pic_marking) + tegra_vde_writel(vde, vde->secure_bo->dma_addr, vde->sxe, 0x7c); + value = 0x10000005; value |= ctx->pic_width_in_mbs << 11; value |= ctx->pic_height_in_mbs << 3; @@ -994,6 +1083,8 @@ static int tegra_vde_probe(struct platform_device *pdev) platform_set_drvdata(pdev, vde); + vde->soc = of_device_get_match_data(&pdev->dev); + vde->sxe = devm_platform_ioremap_resource_byname(pdev, "sxe"); if (IS_ERR(vde->sxe)) return PTR_ERR(vde->sxe); @@ -1119,6 +1210,12 @@ static int tegra_vde_probe(struct platform_device *pdev) pm_runtime_put(dev); + vde->secure_bo = tegra_vde_alloc_bo(vde, DMA_FROM_DEVICE, 4096); + if (!vde->secure_bo) { + dev_err(dev, "Failed to allocate secure BO\n"); + goto err_pm_runtime; + } + return 0; err_pm_runtime: @@ -1142,6 +1239,8 @@ static int tegra_vde_remove(struct platform_device *pdev) struct tegra_vde *vde = platform_get_drvdata(pdev); struct device *dev = &pdev->dev; + tegra_vde_free_bo(vde->secure_bo); + /* * As it increments RPM usage_count even on errors, we don't need to * check the returned code here. @@ -1214,8 +1313,27 @@ static const struct dev_pm_ops tegra_vde_pm_ops = { tegra_vde_pm_resume) }; +static const struct tegra_vde_soc tegra124_vde_soc = { + .supports_ref_pic_marking = true, +}; + +static const struct tegra_vde_soc tegra114_vde_soc = { + .supports_ref_pic_marking = true, +}; + +static const struct tegra_vde_soc tegra30_vde_soc = { + .supports_ref_pic_marking = false, +}; + +static const struct tegra_vde_soc tegra20_vde_soc = { + .supports_ref_pic_marking = false, +}; + static const struct of_device_id tegra_vde_of_match[] = { - { .compatible = "nvidia,tegra20-vde", }, + { .compatible = "nvidia,tegra124-vde", .data = &tegra124_vde_soc }, + { .compatible = "nvidia,tegra114-vde", .data = &tegra114_vde_soc }, + { .compatible = "nvidia,tegra30-vde", .data = &tegra30_vde_soc }, + { .compatible = "nvidia,tegra20-vde", .data = &tegra20_vde_soc }, { }, }; MODULE_DEVICE_TABLE(of, tegra_vde_of_match); diff --git a/drivers/staging/media/tegra-vde/vde.h b/drivers/staging/media/tegra-vde/vde.h index 5561291b0c88..bbd42b8d9991 100644 --- a/drivers/staging/media/tegra-vde/vde.h +++ b/drivers/staging/media/tegra-vde/vde.h @@ -24,6 +24,22 @@ struct iommu_domain; struct reset_control; struct dma_buf_attachment; +struct tegra_vde_soc { + bool supports_ref_pic_marking; +}; + +struct tegra_vde_bo { + struct iova *iova; + struct sg_table sgt; + struct tegra_vde *vde; + enum dma_data_direction dma_dir; + unsigned long dma_attrs; + dma_addr_t dma_handle; + dma_addr_t dma_addr; + void *dma_cookie; + size_t size; +}; + struct tegra_vde { void __iomem *sxe; void __iomem *bsev; @@ -48,6 +64,8 @@ struct tegra_vde { struct iova_domain iova; struct iova *iova_resv_static_addresses; struct iova *iova_resv_last_page; + const struct tegra_vde_soc *soc; + struct tegra_vde_bo *secure_bo; dma_addr_t iram_lists_addr; u32 *iram; };

[v1,1/3] media: staging: tegra-vde: Support reference picture marking

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