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Open source GPL/LGPL release
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svcmobrel-release
253
userspace/units/ecc/nvgpu-ecc.c
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253
userspace/units/ecc/nvgpu-ecc.c
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/*
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* Copyright (c) 2019-2021, 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 <unit/unit.h>
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#include <unit/io.h>
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#include <nvgpu/gk20a.h>
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#include <nvgpu/ecc.h>
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#include <nvgpu/ltc.h>
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#include <nvgpu/posix/posix-fault-injection.h>
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#include <common/gr/gr_priv.h>
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#include "nvgpu-ecc.h"
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static void mock_ecc_free(struct gk20a *g) {
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}
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int test_ecc_init_support(struct unit_module *m, struct gk20a *g,
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void *args)
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{
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/*
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* Case #1:
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* - First time ecc intialization.
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* - "nvgpu_ecc_init_support" should perform init and return 0.
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*/
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g->ecc.initialized = false;
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if (nvgpu_ecc_init_support(g) != 0) {
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return UNIT_FAIL;
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}
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/*
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* Case #2:
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* - Second time ecc intialization.
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* - "nvgpu_ecc_init_support" should skip init but return 0.
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*/
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g->ecc.initialized = true;
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if (nvgpu_ecc_init_support(g) != 0) {
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return UNIT_FAIL;
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}
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return UNIT_SUCCESS;
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}
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int test_ecc_finalize_support(struct unit_module *m, struct gk20a *g,
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void *args)
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{
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/*
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* Case #1:
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* - First time ecc intialization.
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* - "nvgpu_ecc_finalize_support" should perform init and return 0.
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*/
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g->ecc.initialized = false;
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if (nvgpu_ecc_finalize_support(g) != 0) {
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return UNIT_FAIL;
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}
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/*
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* Case #2:
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* - Second time ecc intialization.
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* - "nvgpu_ecc_finalize_support" should skip init but return 0.
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*/
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g->ecc.initialized = true;
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if (nvgpu_ecc_finalize_support(g) != 0) {
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return UNIT_FAIL;
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}
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return UNIT_SUCCESS;
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}
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int test_ecc_counter_init(struct unit_module *m, struct gk20a *g,
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void *args)
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{
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int ret = UNIT_SUCCESS;
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struct nvgpu_ecc_stat *stat = NULL;
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char *name;
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struct nvgpu_posix_fault_inj *kmem_fi =
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nvgpu_kmem_get_fault_injection();
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/*
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* Test setup:
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* - Allocate memory for ecc counter name.
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* - Initialize ecc support.
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*/
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name = nvgpu_kzalloc(g, NVGPU_ECC_STAT_NAME_MAX_SIZE + 1);
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if (name == NULL) {
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return UNIT_FAIL;
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}
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if (nvgpu_ecc_init_support(g) != 0) {
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ret = UNIT_FAIL;
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goto cleanup;
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}
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/*
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* Case #1:
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* - Initialize "name" with valid length string.
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* - "nvgpu_ecc_counter_init" should return 0.
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*/
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strcpy(name, "test_counter");
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if (nvgpu_ecc_counter_init(g, &stat, name) != 0) {
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ret = UNIT_FAIL;
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goto cleanup;
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}
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nvgpu_ecc_counter_deinit(g, &stat);
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/*
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* Case #2:
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* - Inject SW fault to cause "nvgpu_kzalloc" failure.
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* - "nvgpu_ecc_counter_init" should return -ENOMEM.
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*/
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nvgpu_posix_enable_fault_injection(kmem_fi, true, 0);
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if (nvgpu_ecc_counter_init(g, &stat, name) != -ENOMEM) {
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ret = UNIT_FAIL;
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goto cleanup;
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}
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nvgpu_posix_enable_fault_injection(kmem_fi, false, 0);
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/*
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* Case #3:
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* - Intialize "name" with string of length greater than
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* NVGPU_ECC_STAT_NAME_MAX_SIZE.
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* - "nvgpu_ecc_counter_init" should return 0, with a truncated
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* counter name.
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*/
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memset(name, NVGPU_ECC_STAT_NAME_MAX_SIZE, 'a');
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if (nvgpu_ecc_counter_init(g, &stat, name) != 0) {
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ret = UNIT_FAIL;
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goto cleanup;
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}
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nvgpu_ecc_counter_deinit(g, &stat);
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if (!nvgpu_list_empty(&g->ecc.stats_list)) {
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ret = UNIT_FAIL;
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goto cleanup;
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}
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cleanup:
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if (stat != NULL) {
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nvgpu_ecc_counter_deinit(g, &stat);
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}
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nvgpu_kfree(g, name);
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return ret;
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}
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int test_ecc_free(struct unit_module *m, struct gk20a *g,
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void *args)
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{
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int ret = UNIT_SUCCESS;
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if (nvgpu_ecc_init_support(g) != 0) {
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return UNIT_FAIL;
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}
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/*
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* Setup:
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* - allocate memory for gr and clear it to zero.
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* - set gr->config to NULL to return immediately from
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* nvgpu_gr_ecc_free.
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* - Allocate memory for ltc and clear it to zero, this should set
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* the ltc_Count and slice_per_ltc to 0.
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*/
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g->gr = nvgpu_kzalloc(g, sizeof(*g->gr));
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if (g->gr == NULL) {
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return UNIT_FAIL;
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}
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g->ltc = nvgpu_kzalloc(g, sizeof(*g->ltc));
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if (g->ltc == NULL) {
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nvgpu_kfree(g, g->gr);
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return UNIT_FAIL;
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}
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/*
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* Case #1:
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* - fb, fpba and pmu ecc HALs have ecc free handles set to NULL.
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* - "nvgpu_ecc_free" should skip freeing ecc counters for fb, fpba,
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* pmu and return without faulting.
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*/
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g->ops.fb.ecc.free = NULL;
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g->ops.pmu.ecc_free = NULL;
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g->ecc.ltc.ecc_sec_count = nvgpu_kzalloc(g,
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sizeof(*g->ecc.ltc.ecc_sec_count));
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g->ecc.ltc.ecc_ded_count = nvgpu_kzalloc(g,
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sizeof(*g->ecc.ltc.ecc_ded_count));
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if (g->ecc.ltc.ecc_sec_count == NULL
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|| g->ecc.ltc.ecc_ded_count == NULL) {
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ret = UNIT_FAIL;
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goto cleanup;
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}
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nvgpu_ecc_free(g);
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/*
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* Case #2:
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* - fb and pmu ecc HALs have ecc free handles are set.
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* - "nvgpu_ecc_free" should return without faulting.
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*/
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g->ops.fb.ecc.free = mock_ecc_free;
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g->ops.pmu.ecc_free = mock_ecc_free;
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g->ecc.ltc.ecc_sec_count = nvgpu_kzalloc(g,
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sizeof(*g->ecc.ltc.ecc_sec_count));
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g->ecc.ltc.ecc_ded_count = nvgpu_kzalloc(g,
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sizeof(*g->ecc.ltc.ecc_ded_count));
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if (g->ecc.ltc.ecc_sec_count == NULL
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|| g->ecc.ltc.ecc_ded_count == NULL) {
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ret = UNIT_FAIL;
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goto cleanup;
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}
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nvgpu_ecc_free(g);
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g->ecc.ltc.ecc_sec_count = NULL;
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g->ecc.ltc.ecc_ded_count = NULL;
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cleanup:
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if (g->ecc.ltc.ecc_sec_count != NULL) {
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nvgpu_kfree(g, g->ecc.ltc.ecc_sec_count);
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}
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if (g->ecc.ltc.ecc_ded_count != NULL) {
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nvgpu_kfree(g, g->ecc.ltc.ecc_ded_count);
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}
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nvgpu_kfree(g, g->gr);
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nvgpu_kfree(g, g->ltc);
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return ret;
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}
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struct unit_module_test ecc_tests[] = {
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UNIT_TEST(ecc_init_support, test_ecc_init_support, NULL, 0),
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UNIT_TEST(ecc_finalize_support, test_ecc_finalize_support, NULL, 0),
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UNIT_TEST(ecc_counter_init, test_ecc_counter_init, NULL, 0),
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UNIT_TEST(ecc_free, test_ecc_free, NULL, 0),
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};
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UNIT_MODULE(ecc, ecc_tests, UNIT_PRIO_NVGPU_TEST);
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