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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /include/uapi/fwctl/fwctl.h
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Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'include/uapi/fwctl/fwctl.h')
-rw-r--r--include/uapi/fwctl/fwctl.h142
1 files changed, 142 insertions, 0 deletions
diff --git a/include/uapi/fwctl/fwctl.h b/include/uapi/fwctl/fwctl.h
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+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/* Copyright (c) 2024-2025, NVIDIA CORPORATION & AFFILIATES.
+ */
+#ifndef _UAPI_FWCTL_H
+#define _UAPI_FWCTL_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define FWCTL_TYPE 0x9A
+
+/**
+ * DOC: General ioctl format
+ *
+ * The ioctl interface follows a general format to allow for extensibility. Each
+ * ioctl is passed a structure pointer as the argument providing the size of
+ * the structure in the first u32. The kernel checks that any structure space
+ * beyond what it understands is 0. This allows userspace to use the backward
+ * compatible portion while consistently using the newer, larger, structures.
+ *
+ * ioctls use a standard meaning for common errnos:
+ *
+ * - ENOTTY: The IOCTL number itself is not supported at all
+ * - E2BIG: The IOCTL number is supported, but the provided structure has
+ * non-zero in a part the kernel does not understand.
+ * - EOPNOTSUPP: The IOCTL number is supported, and the structure is
+ * understood, however a known field has a value the kernel does not
+ * understand or support.
+ * - EINVAL: Everything about the IOCTL was understood, but a field is not
+ * correct.
+ * - ENOMEM: Out of memory.
+ * - ENODEV: The underlying device has been hot-unplugged and the FD is
+ * orphaned.
+ *
+ * As well as additional errnos, within specific ioctls.
+ */
+enum {
+ FWCTL_CMD_BASE = 0,
+ FWCTL_CMD_INFO = 0,
+ FWCTL_CMD_RPC = 1,
+};
+
+enum fwctl_device_type {
+ FWCTL_DEVICE_TYPE_ERROR = 0,
+ FWCTL_DEVICE_TYPE_MLX5 = 1,
+ FWCTL_DEVICE_TYPE_CXL = 2,
+ FWCTL_DEVICE_TYPE_BNXT = 3,
+ FWCTL_DEVICE_TYPE_PDS = 4,
+};
+
+/**
+ * struct fwctl_info - ioctl(FWCTL_INFO)
+ * @size: sizeof(struct fwctl_info)
+ * @flags: Must be 0
+ * @out_device_type: Returns the type of the device from enum fwctl_device_type
+ * @device_data_len: On input the length of the out_device_data memory. On
+ * output the size of the kernel's device_data which may be larger or
+ * smaller than the input. Maybe 0 on input.
+ * @out_device_data: Pointer to a memory of device_data_len bytes. Kernel will
+ * fill the entire memory, zeroing as required.
+ *
+ * Returns basic information about this fwctl instance, particularly what driver
+ * is being used to define the device_data format.
+ */
+struct fwctl_info {
+ __u32 size;
+ __u32 flags;
+ __u32 out_device_type;
+ __u32 device_data_len;
+ __aligned_u64 out_device_data;
+};
+#define FWCTL_INFO _IO(FWCTL_TYPE, FWCTL_CMD_INFO)
+
+/**
+ * enum fwctl_rpc_scope - Scope of access for the RPC
+ *
+ * Refer to fwctl.rst for a more detailed discussion of these scopes.
+ */
+enum fwctl_rpc_scope {
+ /**
+ * @FWCTL_RPC_CONFIGURATION: Device configuration access scope
+ *
+ * Read/write access to device configuration. When configuration
+ * is written to the device it remains in a fully supported state.
+ */
+ FWCTL_RPC_CONFIGURATION = 0,
+ /**
+ * @FWCTL_RPC_DEBUG_READ_ONLY: Read only access to debug information
+ *
+ * Readable debug information. Debug information is compatible with
+ * kernel lockdown, and does not disclose any sensitive information. For
+ * instance exposing any encryption secrets from this information is
+ * forbidden.
+ */
+ FWCTL_RPC_DEBUG_READ_ONLY = 1,
+ /**
+ * @FWCTL_RPC_DEBUG_WRITE: Writable access to lockdown compatible debug information
+ *
+ * Allows write access to data in the device which may leave a fully
+ * supported state. This is intended to permit intensive and possibly
+ * invasive debugging. This scope will taint the kernel.
+ */
+ FWCTL_RPC_DEBUG_WRITE = 2,
+ /**
+ * @FWCTL_RPC_DEBUG_WRITE_FULL: Write access to all debug information
+ *
+ * Allows read/write access to everything. Requires CAP_SYS_RAW_IO, so
+ * it is not required to follow lockdown principals. If in doubt
+ * debugging should be placed in this scope. This scope will taint the
+ * kernel.
+ */
+ FWCTL_RPC_DEBUG_WRITE_FULL = 3,
+};
+
+/**
+ * struct fwctl_rpc - ioctl(FWCTL_RPC)
+ * @size: sizeof(struct fwctl_rpc)
+ * @scope: One of enum fwctl_rpc_scope, required scope for the RPC
+ * @in_len: Length of the in memory
+ * @out_len: Length of the out memory
+ * @in: Request message in device specific format
+ * @out: Response message in device specific format
+ *
+ * Deliver a Remote Procedure Call to the device FW and return the response. The
+ * call's parameters and return are marshaled into linear buffers of memory. Any
+ * errno indicates that delivery of the RPC to the device failed. Return status
+ * originating in the device during a successful delivery must be encoded into
+ * out.
+ *
+ * The format of the buffers matches the out_device_type from FWCTL_INFO.
+ */
+struct fwctl_rpc {
+ __u32 size;
+ __u32 scope;
+ __u32 in_len;
+ __u32 out_len;
+ __aligned_u64 in;
+ __aligned_u64 out;
+};
+#define FWCTL_RPC _IO(FWCTL_TYPE, FWCTL_CMD_RPC)
+
+#endif