From 691bf904451bfe2e4c44ea05319149996abbbbf1 Mon Sep 17 00:00:00 2001 From: Alex Waterman Date: Wed, 27 Jun 2018 14:45:07 -0700 Subject: gpu: nvgpu: unit: Add unit testing FW Full documentation for this is in the unit testing confluence page. JIRA NVGPU-525 Bug 2261555 Change-Id: I463e6267eb0eb12b7313f8b275266e8faabe5ccf Signed-off-by: Alex Waterman Reviewed-on: https://git-master.nvidia.com/r/1683915 GVS: Gerrit_Virtual_Submit Reviewed-by: Konsta Holtta Reviewed-by: Terje Bergstrom Reviewed-by: mobile promotions Tested-by: mobile promotions --- userspace/src/nvgpu.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 userspace/src/nvgpu.c (limited to 'userspace/src/nvgpu.c') diff --git a/userspace/src/nvgpu.c b/userspace/src/nvgpu.c new file mode 100644 index 00000000..a9b7ced3 --- /dev/null +++ b/userspace/src/nvgpu.c @@ -0,0 +1,78 @@ +/* + * 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 +#include + +#include +#include + +/* + * 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; +} -- cgit v1.2.2