mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 17:36:20 +03:00
111 lines
3.0 KiB
C
111 lines
3.0 KiB
C
/*
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* Copyright (c) 2017-2021, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <nvgpu/enabled.h>
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#include <nvgpu/bitops.h>
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#include <nvgpu/log.h>
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#include <nvgpu/gk20a.h>
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#include <nvgpu/static_analysis.h>
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#include <nvgpu/utils.h>
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/**
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* Array of flag names
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*/
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#define DEFINE_FLAG(flag, desc) [flag] = nvgpu_stringify(flag)
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static const char *enabled_flag_names[NVGPU_MAX_ENABLED_BITS + 1U] = {
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ENABLED_FLAGS
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};
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#undef DEFINE_FLAG
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/**
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* Array of flag descriptions
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*/
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#define DEFINE_FLAG(flag, desc) [flag] = desc
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static const char *enabled_flag_desc[NVGPU_MAX_ENABLED_BITS + 1U] = {
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ENABLED_FLAGS
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};
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#undef DEFINE_FLAG
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void nvgpu_print_enabled_flags(struct gk20a *g)
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{
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u32 i;
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nvgpu_log(g, gpu_dbg_info, "NVGPU support flags status");
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nvgpu_log(g, gpu_dbg_info, "%-55.55s %-6.6s %s",
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"Flag", "Status", "Description");
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nvgpu_log(g, gpu_dbg_info, "%-55.55s %-6.6s %s",
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"----", "------", "-----------");
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for (i = 0U; i < U32(NVGPU_MAX_ENABLED_BITS); i++) {
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nvgpu_log(g, gpu_dbg_info, "%-55.55s %-6.6s %s",
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enabled_flag_names[i],
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nvgpu_is_enabled(g, i) ? "true" : "false",
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enabled_flag_desc[i]);
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}
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}
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int nvgpu_init_enabled_flags(struct gk20a *g)
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{
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/*
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* Zero all flags initially. Flags that should be set to non-zero states
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* can be done so during driver init.
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*/
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g->enabled_flags = nvgpu_kzalloc(g,
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BITS_TO_LONGS(U32(NVGPU_MAX_ENABLED_BITS)) *
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sizeof(unsigned long));
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if (g->enabled_flags == NULL) {
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return -ENOMEM;
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}
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return 0;
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}
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/*
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* Call this on driver shutdown!
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*/
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void nvgpu_free_enabled_flags(struct gk20a *g)
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{
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nvgpu_kfree(g, g->enabled_flags);
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}
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bool nvgpu_is_enabled(struct gk20a *g, u32 flag)
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{
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if (flag < NVGPU_MAX_ENABLED_BITS) {
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return nvgpu_test_bit(flag, g->enabled_flags);
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} else {
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return 0;
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}
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}
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void nvgpu_set_enabled(struct gk20a *g, u32 flag, bool state)
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{
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if (flag >= NVGPU_MAX_ENABLED_BITS) {
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return;
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}
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if (state) {
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nvgpu_set_bit(flag, g->enabled_flags);
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} else {
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nvgpu_clear_bit(flag, g->enabled_flags);
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}
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}
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