mirror of
https://github.com/NVIDIA/open-gpu-kernel-modules.git
synced 2024-12-05 00:24:22 +01:00
123 lines
4.2 KiB
C
123 lines
4.2 KiB
C
/*
|
|
* SPDX-FileCopyrightText: Copyright (c) 2015 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
|
|
* SPDX-License-Identifier: MIT
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _NV_MODESET_INTERFACE_H_
|
|
#define _NV_MODESET_INTERFACE_H_
|
|
|
|
/*
|
|
* This file defines the interface between the nvidia and
|
|
* nvidia-modeset UNIX kernel modules.
|
|
*
|
|
* The nvidia-modeset kernel module calls the nvidia kernel module's
|
|
* nvidia_get_rm_ops() function to get the RM API function pointers
|
|
* which it will need.
|
|
*/
|
|
|
|
#include "nvstatus.h"
|
|
|
|
#include "nv-gpu-info.h"
|
|
|
|
/*
|
|
* nvidia_stack_s is defined in nv.h, which pulls in a lot of other
|
|
* dependencies. The nvidia-modeset kernel module doesn't need to
|
|
* dereference the nvidia_stack_s pointer, so just treat is as an
|
|
* opaque pointer for purposes of this API definition.
|
|
*/
|
|
typedef struct nvidia_stack_s *nvidia_modeset_stack_ptr;
|
|
|
|
/*
|
|
* Callback functions from the RM OS interface layer into the NVKMS OS interface
|
|
* layer.
|
|
*
|
|
* These functions should be called without the RM lock held, using the kernel's
|
|
* native calling convention.
|
|
*/
|
|
typedef struct {
|
|
/*
|
|
* Suspend & resume callbacks. Note that these are called once per GPU.
|
|
*/
|
|
void (*suspend)(NvU32 gpu_id);
|
|
void (*resume)(NvU32 gpu_id);
|
|
} nvidia_modeset_callbacks_t;
|
|
|
|
/*
|
|
* The RM API entry points which the nvidia-modeset kernel module should
|
|
* call in the nvidia kernel module.
|
|
*/
|
|
|
|
typedef struct {
|
|
/*
|
|
* The nvidia-modeset kernel module should assign version_string
|
|
* before passing the structure to the nvidia kernel module, so
|
|
* that a version match can be confirmed: it is not supported to
|
|
* mix nvidia and nvidia-modeset kernel modules from different
|
|
* releases.
|
|
*/
|
|
const char *version_string;
|
|
|
|
/*
|
|
* Return system information.
|
|
*/
|
|
struct {
|
|
/* Availability of write combining support for video memory */
|
|
NvBool allow_write_combining;
|
|
} system_info;
|
|
|
|
/*
|
|
* Allocate and free an nvidia_stack_t to pass into
|
|
* nvidia_modeset_rm_ops_t::op(). An nvidia_stack_t must only be
|
|
* used by one thread at a time.
|
|
*
|
|
* Note that on architectures where an alternate stack is not
|
|
* used, alloc_stack() will set sp=NULL even when it returns 0
|
|
* (success). I.e., check the return value, not the sp value.
|
|
*/
|
|
int (*alloc_stack)(nvidia_modeset_stack_ptr *sp);
|
|
void (*free_stack)(nvidia_modeset_stack_ptr sp);
|
|
|
|
/*
|
|
* Enumerate list of gpus probed by nvidia driver.
|
|
*
|
|
* gpu_info is an array of NVIDIA_MAX_GPUS elements. The number of GPUs
|
|
* in the system is returned.
|
|
*/
|
|
NvU32 (*enumerate_gpus)(nv_gpu_info_t *gpu_info);
|
|
|
|
/*
|
|
* {open,close}_gpu() raise and lower the reference count of the
|
|
* specified GPU. This is equivalent to opening and closing a
|
|
* /dev/nvidiaN device file from user-space.
|
|
*/
|
|
int (*open_gpu)(NvU32 gpu_id, nvidia_modeset_stack_ptr sp);
|
|
void (*close_gpu)(NvU32 gpu_id, nvidia_modeset_stack_ptr sp);
|
|
|
|
void (*op)(nvidia_modeset_stack_ptr sp, void *ops_cmd);
|
|
|
|
int (*set_callbacks)(const nvidia_modeset_callbacks_t *cb);
|
|
|
|
} nvidia_modeset_rm_ops_t;
|
|
|
|
NV_STATUS nvidia_get_rm_ops(nvidia_modeset_rm_ops_t *rm_ops);
|
|
|
|
#endif /* _NV_MODESET_INTERFACE_H_ */
|