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/*
* Copyright (c) 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.
*/
#include <dlfcn.h>
#include <stdlib.h>
#include <unit/io.h>
#include <unit/core.h>
/*
* Load libnvgpu-drv.so. This is done with dlopen() since this will make
* resolving addresses into symbols easier in the future.
*
* Also, this makes people think carefully about what functions to call in
* nvgpu-drv from the unit test FW. The interaction should really be limited
* and doing explicit name lookups is a good way to prevent too much coupling.
*/
int core_load_nvgpu(struct unit_fw *fw)
{
const char *msg;
/*
* Specify a GLOBAL binding so that subsequently loaded unit tests see
* the nvgpu-drv library. They will of course need it (and will access
* it directly). I.e they will link against nvgpu-drv and this should
* satisfy that linkage.
*/
fw->nvgpu_so = dlopen("libnvgpu-drv.so", RTLD_NOW | RTLD_GLOBAL);
if (fw->nvgpu_so == NULL) {
msg = dlerror();
core_err(fw, "Failed to load nvgpu-drv: %s\n", msg);
return -1;
}
/*
* We directly check the value of the returned symbol for these
* functions against NULL because if it is NULL then something is
* terribly wrong.
*/
fw->nvgpu.nvgpu_posix_probe = dlsym(fw->nvgpu_so,
"nvgpu_posix_probe");
if (fw->nvgpu.nvgpu_posix_probe == NULL) {
msg = dlerror();
core_err(fw, "Failed to resolve nvgpu_posix_probe: %s\n", msg);
return -1;
}
fw->nvgpu.nvgpu_posix_cleanup = dlsym(fw->nvgpu_so,
"nvgpu_posix_cleanup");
if (fw->nvgpu.nvgpu_posix_cleanup == NULL) {
msg = dlerror();
core_err(fw, "Failed to resolve nvgpu_posix_cleanup: %s\n", msg);
return -1;
}
return 0;
}
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