From 01e6fac4d61fdd7fff5433942ec93fc2ea1e4df1 Mon Sep 17 00:00:00 2001 From: Joshua Bakita Date: Wed, 28 Jun 2023 18:24:25 -0400 Subject: Include nvgpu headers These are needed to build on NVIDIA's Jetson boards for the time being. Only a couple structs are required, so it should be fairly easy to remove this dependency at some point in the future. --- include/nvgpu/vidmem.h | 148 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 148 insertions(+) create mode 100644 include/nvgpu/vidmem.h (limited to 'include/nvgpu/vidmem.h') diff --git a/include/nvgpu/vidmem.h b/include/nvgpu/vidmem.h new file mode 100644 index 0000000..4470232 --- /dev/null +++ b/include/nvgpu/vidmem.h @@ -0,0 +1,148 @@ +/* + * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved. + * + * 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 NVGPU_VIDMEM_H +#define NVGPU_VIDMEM_H + +#include +#include + +struct gk20a; +struct mm_gk20a; +struct nvgpu_mem; + +struct nvgpu_vidmem_buf { + /* + * Must be a pointer since control of this mem is passed over to the + * vidmem background clearing thread when the vidmem buf is freed. + */ + struct nvgpu_mem *mem; + + struct gk20a *g; + + /* + * Filled in by each OS - this holds the necessary data to export this + * buffer to userspace. This will eventually be replaced by a struct + * which shall be defined in the OS specific vidmem.h header file. + */ + void *priv; +}; + +#if defined(CONFIG_GK20A_VIDMEM) + +/** + * nvgpu_vidmem_user_alloc - Allocates a vidmem buffer for userspace + * + * @g - The GPU. + * @bytes - Size of the buffer in bytes. + * + * Allocate a generic (OS agnostic) vidmem buffer. This does not allocate the OS + * specific interfacing for userspace sharing. Instead is is expected that the + * OS specific code will allocate that OS specific data and add it to this + * buffer. + * + * The buffer allocated here is intended to use used by userspace, hence the + * extra struct over nvgpu_mem. If a vidmem buffer is needed by the kernel + * driver only then a simple nvgpu_dma_alloc_vid() or the like is sufficient. + * + * Returns a pointer to a vidmem buffer on success, 0 otherwise. + */ +struct nvgpu_vidmem_buf *nvgpu_vidmem_user_alloc(struct gk20a *g, size_t bytes); + +void nvgpu_vidmem_buf_free(struct gk20a *g, struct nvgpu_vidmem_buf *buf); + +int nvgpu_vidmem_clear_list_enqueue(struct gk20a *g, struct nvgpu_mem *mem); + +bool nvgpu_addr_is_vidmem_page_alloc(u64 addr); +int nvgpu_vidmem_get_space(struct gk20a *g, u64 *space); + +void nvgpu_vidmem_destroy(struct gk20a *g); +int nvgpu_vidmem_init(struct mm_gk20a *mm); + +int nvgpu_vidmem_clear(struct gk20a *g, struct nvgpu_mem *mem); + +void nvgpu_vidmem_thread_pause_sync(struct mm_gk20a *mm); +void nvgpu_vidmem_thread_unpause(struct mm_gk20a *mm); + +#else /* !defined(CONFIG_GK20A_VIDMEM) */ + +/* + * When VIDMEM support is not present this interface is used. + */ + +static inline bool nvgpu_addr_is_vidmem_page_alloc(u64 addr) +{ + return false; +} + +static inline int nvgpu_vidmem_buf_alloc(struct gk20a *g, size_t bytes) +{ + return -ENOSYS; +} + +static inline void nvgpu_vidmem_buf_free(struct gk20a *g, + struct nvgpu_vidmem_buf *buf) +{ +} + +static inline int nvgpu_vidmem_get_space(struct gk20a *g, u64 *space) +{ + return -ENOSYS; +} + +static inline void nvgpu_vidmem_destroy(struct gk20a *g) +{ +} + +static inline int nvgpu_vidmem_init(struct mm_gk20a *mm) +{ + return 0; +} + +static inline int nvgpu_vidmem_clear_all(struct gk20a *g) +{ + return -ENOSYS; +} + +static inline int nvgpu_vidmem_clear(struct gk20a *g, + struct nvgpu_mem *mem) +{ + return -ENOSYS; +} + +static inline void nvgpu_vidmem_thread_pause_sync(struct mm_gk20a *mm) +{ +} + +static inline void nvgpu_vidmem_thread_unpause(struct mm_gk20a *mm) +{ +} + +#endif /* !defined(CONFIG_GK20A_VIDMEM) */ + +/* + * Simple macro for VIDMEM debugging. + */ +#define vidmem_dbg(g, fmt, args...) \ + nvgpu_log(g, gpu_dbg_vidmem, fmt, ##args); \ + +#endif /* NVGPU_VIDMEM_H */ -- cgit v1.2.2