Introduce a Tegra241 CMDQV backend that plugs into the SMMUv3 accelerated CMDQV ops interface.
This patch wires up the Tegra241 CMDQV backend and provides a stub implementation for CMDQV probe, initialization, vIOMMU allocation and reset handling. Functional CMDQV support is added in follow-up patches. Signed-off-by: Shameer Kolothum <[email protected]> --- hw/arm/tegra241-cmdqv.h | 15 ++++++++++ hw/arm/tegra241-cmdqv-stubs.c | 18 +++++++++++ hw/arm/tegra241-cmdqv.c | 56 +++++++++++++++++++++++++++++++++++ hw/arm/Kconfig | 5 ++++ hw/arm/meson.build | 2 ++ 5 files changed, 96 insertions(+) create mode 100644 hw/arm/tegra241-cmdqv.h create mode 100644 hw/arm/tegra241-cmdqv-stubs.c create mode 100644 hw/arm/tegra241-cmdqv.c diff --git a/hw/arm/tegra241-cmdqv.h b/hw/arm/tegra241-cmdqv.h new file mode 100644 index 0000000000..07e10e86ee --- /dev/null +++ b/hw/arm/tegra241-cmdqv.h @@ -0,0 +1,15 @@ +/* + * Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved + * NVIDIA Tegra241 CMDQ-Virtualiisation extension for SMMUv3 + * + * Written by Nicolin Chen, Shameer Kolothum + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef HW_ARM_TEGRA241_CMDQV_H +#define HW_ARM_TEGRA241_CMDQV_H + +const SMMUv3AccelCmdqvOps *tegra241_cmdqv_get_ops(void); + +#endif /* HW_ARM_TEGRA241_CMDQV_H */ diff --git a/hw/arm/tegra241-cmdqv-stubs.c b/hw/arm/tegra241-cmdqv-stubs.c new file mode 100644 index 0000000000..eedc7bfdcd --- /dev/null +++ b/hw/arm/tegra241-cmdqv-stubs.c @@ -0,0 +1,18 @@ +/* + * Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved + * + * Stubs for Tegra241 CMDQ-Virtualiisation extension for SMMUv3 + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "hw/arm/smmuv3.h" +#include "smmuv3-accel.h" +#include "hw/arm/tegra241-cmdqv.h" + +const SMMUv3AccelCmdqvOps *tegra241_cmdqv_get_ops(void) +{ + return NULL; +} + diff --git a/hw/arm/tegra241-cmdqv.c b/hw/arm/tegra241-cmdqv.c new file mode 100644 index 0000000000..ad5a0d4611 --- /dev/null +++ b/hw/arm/tegra241-cmdqv.c @@ -0,0 +1,56 @@ +/* + * Copyright (c) 2025-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved + * NVIDIA Tegra241 CMDQ-Virtualization extension for SMMUv3 + * + * Written by Nicolin Chen, Shameer Kolothum + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" + +#include "hw/arm/smmuv3.h" +#include "smmuv3-accel.h" +#include "tegra241-cmdqv.h" + +static void tegra241_cmdqv_free_viommu(SMMUv3State *s) +{ +} + +static bool +tegra241_cmdqv_alloc_viommu(SMMUv3State *s, HostIOMMUDeviceIOMMUFD *idev, + uint32_t *out_viommu_id, Error **errp) +{ + error_setg(errp, "NVIDIA Tegra241 CMDQV is unsupported"); + return false; +} + +static void tegra241_cmdqv_reset(SMMUv3State *s) +{ +} + +static bool tegra241_cmdqv_init(SMMUv3State *s, Error **errp) +{ + error_setg(errp, "NVIDIA Tegra241 CMDQV is unsupported"); + return false; +} + +static bool tegra241_cmdqv_probe(SMMUv3State *s, HostIOMMUDeviceIOMMUFD *idev, + Error **errp) +{ + error_setg(errp, "NVIDIA Tegra241 CMDQV is unsupported"); + return false; +} + +static const SMMUv3AccelCmdqvOps tegra241_cmdqv_ops = { + .probe = tegra241_cmdqv_probe, + .init = tegra241_cmdqv_init, + .alloc_viommu = tegra241_cmdqv_alloc_viommu, + .free_viommu = tegra241_cmdqv_free_viommu, + .reset = tegra241_cmdqv_reset, +}; + +const SMMUv3AccelCmdqvOps *tegra241_cmdqv_get_ops(void) +{ + return &tegra241_cmdqv_ops; +} diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig index c66c452737..3305c6e76e 100644 --- a/hw/arm/Kconfig +++ b/hw/arm/Kconfig @@ -626,6 +626,10 @@ config FSL_IMX8MP_EVK depends on TCG select FSL_IMX8MP +config TEGRA241_CMDQV + bool + depends on ARM_SMMUV3_ACCEL + config ARM_SMMUV3_ACCEL bool depends on ARM_SMMUV3 @@ -633,6 +637,7 @@ config ARM_SMMUV3_ACCEL config ARM_SMMUV3 bool select ARM_SMMUV3_ACCEL if IOMMUFD + imply TEGRA241_CMDQV config FSL_IMX6UL bool diff --git a/hw/arm/meson.build b/hw/arm/meson.build index 8f834c32b1..fc83b635e7 100644 --- a/hw/arm/meson.build +++ b/hw/arm/meson.build @@ -88,6 +88,8 @@ arm_common_ss.add(when: 'CONFIG_FSL_IMX8MP_EVK', if_true: files('imx8mp-evk.c')) arm_common_ss.add(when: 'CONFIG_ARM_SMMUV3', if_true: files('smmuv3.c')) arm_common_ss.add(when: 'CONFIG_ARM_SMMUV3_ACCEL', if_true: files('smmuv3-accel.c')) stub_ss.add(files('smmuv3-accel-stubs.c')) +arm_common_ss.add(when: 'CONFIG_TEGRA241_CMDQV', if_true: files('tegra241-cmdqv.c')) +stub_ss.add(files('tegra241-cmdqv-stubs.c')) arm_common_ss.add(when: 'CONFIG_FSL_IMX6UL', if_true: files('fsl-imx6ul.c', 'mcimx6ul-evk.c')) arm_common_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_soc.c')) arm_common_ss.add(when: 'CONFIG_XEN', if_true: files( -- 2.43.0
