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aba26fa082
Currently, there are few chip specific erratas present in nvgpu code. For better traceability of the erratas and corresponding fixes, introduce flags to indicate existing erratas on a chip. These flags decide if a corresponding solution is applied to the chip(s). This patch introduces below functions to handle errata flags: - nvgpu_init_errata_flags - nvgpu_set_errata - nvgpu_is_errata_present - nvgpu_print_errata_flags - nvgpu_free_errata_flags nvgpu_print_errata_flags: print below details of erratas present in chip 1. errata flag name 2. chip where the errata was first discovered 3. short description of the errata Flags corresponding to erratas present in a chip are set during chip hal init sequence. JIRA NVGPU-6510 Change-Id: Id5a8fb627222ac0a585aba071af052950f4de965 Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2498095 Reviewed-by: Seema Khowala <seemaj@nvidia.com> Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit
126 lines
3.3 KiB
C
126 lines
3.3 KiB
C
/*
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* Copyright (c) 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/errata.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_ERRATA(flag, chip, desc) [flag] = nvgpu_stringify(flag)
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static const char *errata_flag_names[NVGPU_MAX_ERRATA_BITS + 1U] = {
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ERRATA_FLAGS_NEXT
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ERRATA_FLAGS
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};
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#undef DEFINE_ERRATA
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/**
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* Array of flag descriptions
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*/
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#define DEFINE_ERRATA(flag, chip, desc) [flag] = desc
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static const char *errata_flag_desc[NVGPU_MAX_ERRATA_BITS + 1U] = {
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ERRATA_FLAGS_NEXT
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ERRATA_FLAGS
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};
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#undef DEFINE_ERRATA
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/**
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* Array of chips where errata was first discovered
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*/
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#define DEFINE_ERRATA(flag, chip, desc) [flag] = chip
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static const char *errata_flag_chip[NVGPU_MAX_ERRATA_BITS + 1U] = {
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ERRATA_FLAGS_NEXT
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ERRATA_FLAGS
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};
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#undef DEFINE_ERRATA
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void nvgpu_print_errata_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 Erratas present in chip");
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nvgpu_log(g, gpu_dbg_info, "%-55.55s %-5.5s %s",
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"Flag", "Chip", "Description");
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nvgpu_log(g, gpu_dbg_info, "%-55.55s %-5.5s %s",
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"----", "-----", "-----------");
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for (i = 0U; i < U32(NVGPU_MAX_ERRATA_BITS); i++) {
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/* Only print erratas present in chip */
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if (nvgpu_is_errata_present(g, i)) {
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nvgpu_log(g, gpu_dbg_info, "%-55.55s %-5.5s %s",
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errata_flag_names[i],
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errata_flag_chip[i],
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errata_flag_desc[i]);
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}
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}
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}
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int nvgpu_init_errata_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 hal init.
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*/
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g->errata_flags = nvgpu_kzalloc(g,
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BITS_TO_LONGS(U32(NVGPU_MAX_ERRATA_BITS)) *
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sizeof(unsigned long));
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if (g->errata_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_errata_flags(struct gk20a *g)
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{
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nvgpu_kfree(g, g->errata_flags);
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}
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bool nvgpu_is_errata_present(struct gk20a *g, u32 flag)
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{
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if (flag < NVGPU_MAX_ERRATA_BITS) {
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return nvgpu_test_bit(flag, g->errata_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_errata(struct gk20a *g, u32 flag, bool state)
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{
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if (flag >= NVGPU_MAX_ERRATA_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->errata_flags);
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} else {
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nvgpu_clear_bit(flag, g->errata_flags);
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}
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}
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