24c77594e0
To enable the gpudev rte_gpu_mem_cpu_map feature to expose GPU memory to the CPU, the GPU CUDA driver library needs the GDRCopy library and driver. If DPDK is built without GDRCopy, the GPU CUDA driver returns error if the is invoked rte_gpu_mem_cpu_map. All the others GPU CUDA driver functionalities are not affected by the absence of GDRCopy, thus this is an optional functionality that can be enabled in the GPU CUDA driver. CUDA driver documentation has been updated accordingly. Signed-off-by: Elena Agostini <eagostini@nvidia.com>
39 lines
923 B
C
39 lines
923 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) 2022 NVIDIA Corporation & Affiliates
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*/
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#ifndef CUDA_COMMON_H
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#define CUDA_COMMON_H
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#include <dlfcn.h>
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#include <rte_common.h>
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#include <rte_log.h>
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#include <rte_errno.h>
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extern int cuda_logtype;
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/* Helper macro for logging */
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#define rte_cuda_log(level, fmt, ...) \
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rte_log(RTE_LOG_ ## level, cuda_logtype, fmt "\n", ##__VA_ARGS__)
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#define rte_cuda_debug(fmt, ...) \
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rte_cuda_log(DEBUG, RTE_STR(__LINE__) ":%s() " fmt, __func__, \
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##__VA_ARGS__)
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#ifdef DRIVERS_GPU_CUDA_GDRCOPY_H
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#include <gdrapi.h>
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#else
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struct gdr;
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typedef struct gdr *gdr_t;
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struct gdr_mh_s { unsigned long h; };
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typedef struct gdr_mh_s gdr_mh_t;
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#endif
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int gdrcopy_pin(gdr_t *gdrc_h, __rte_unused gdr_mh_t *mh,
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uint64_t d_addr, size_t size, void **h_addr);
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int gdrcopy_unpin(gdr_t gdrc_h, __rte_unused gdr_mh_t mh,
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void *d_addr, size_t size);
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#endif /* CUDA_COMMON_H */
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