162306a36Sopenharmony_ci# SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci 362306a36Sopenharmony_ciconfig TEGRA_HOST1X_CONTEXT_BUS 462306a36Sopenharmony_ci bool 562306a36Sopenharmony_ci 662306a36Sopenharmony_ciconfig TEGRA_HOST1X 762306a36Sopenharmony_ci tristate "NVIDIA Tegra host1x driver" 862306a36Sopenharmony_ci depends on ARCH_TEGRA || COMPILE_TEST 962306a36Sopenharmony_ci select DMA_SHARED_BUFFER 1062306a36Sopenharmony_ci select TEGRA_HOST1X_CONTEXT_BUS 1162306a36Sopenharmony_ci select IOMMU_IOVA 1262306a36Sopenharmony_ci help 1362306a36Sopenharmony_ci Driver for the NVIDIA Tegra host1x hardware. 1462306a36Sopenharmony_ci 1562306a36Sopenharmony_ci The Tegra host1x module is the DMA engine for register access to 1662306a36Sopenharmony_ci Tegra's graphics- and multimedia-related modules. The modules served 1762306a36Sopenharmony_ci by host1x are referred to as clients. host1x includes some other 1862306a36Sopenharmony_ci functionality, such as synchronization. 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ciif TEGRA_HOST1X 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ciconfig TEGRA_HOST1X_FIREWALL 2362306a36Sopenharmony_ci bool "Enable HOST1X security firewall" 2462306a36Sopenharmony_ci default y 2562306a36Sopenharmony_ci help 2662306a36Sopenharmony_ci Say yes if kernel should protect command streams from tampering. 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci If unsure, choose Y. 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ciendif 31