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nfit_test: add error injection DSMs
Add nfit_test emulation for the new ACPI 6.2 error injectino DSMs. This will allow unit tests to selectively inject the errors they wish to test for. Signed-off-by: Dave Jiang <dave.jiang@intel.com> [vishal: Move injection functions to ND_CMD_CALL] [vishal: Add support for the notification option] [vishal: move an nfit_test private definition into a local header] Signed-off-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dave Jiang
Dan Williams
parent
aa9ad44a42
commit
9fb1a19033
@ -168,8 +168,12 @@ struct nfit_test {
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spinlock_t lock;
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} ars_state;
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struct device *dimm_dev[NUM_DCR];
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struct badrange badrange;
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struct work_struct work;
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};
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static struct workqueue_struct *nfit_wq;
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static struct nfit_test *to_nfit_test(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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@ -234,48 +238,68 @@ static int nfit_test_cmd_set_config_data(struct nd_cmd_set_config_hdr *nd_cmd,
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return rc;
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}
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#define NFIT_TEST_ARS_RECORDS 4
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#define NFIT_TEST_CLEAR_ERR_UNIT 256
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static int nfit_test_cmd_ars_cap(struct nd_cmd_ars_cap *nd_cmd,
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unsigned int buf_len)
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{
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int ars_recs;
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if (buf_len < sizeof(*nd_cmd))
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return -EINVAL;
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/* for testing, only store up to n records that fit within 4k */
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ars_recs = SZ_4K / sizeof(struct nd_ars_record);
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nd_cmd->max_ars_out = sizeof(struct nd_cmd_ars_status)
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+ NFIT_TEST_ARS_RECORDS * sizeof(struct nd_ars_record);
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+ ars_recs * sizeof(struct nd_ars_record);
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nd_cmd->status = (ND_ARS_PERSISTENT | ND_ARS_VOLATILE) << 16;
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nd_cmd->clear_err_unit = NFIT_TEST_CLEAR_ERR_UNIT;
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return 0;
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}
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/*
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* Initialize the ars_state to return an ars_result 1 second in the future with
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* a 4K error range in the middle of the requested address range.
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*/
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static void post_ars_status(struct ars_state *ars_state, u64 addr, u64 len)
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static void post_ars_status(struct ars_state *ars_state,
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struct badrange *badrange, u64 addr, u64 len)
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{
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struct nd_cmd_ars_status *ars_status;
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struct nd_ars_record *ars_record;
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struct badrange_entry *be;
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u64 end = addr + len - 1;
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int i = 0;
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ars_state->deadline = jiffies + 1*HZ;
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ars_status = ars_state->ars_status;
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ars_status->status = 0;
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ars_status->out_length = sizeof(struct nd_cmd_ars_status)
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+ sizeof(struct nd_ars_record);
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ars_status->address = addr;
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ars_status->length = len;
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ars_status->type = ND_ARS_PERSISTENT;
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ars_status->num_records = 1;
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ars_record = &ars_status->records[0];
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ars_record->handle = 0;
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ars_record->err_address = addr + len / 2;
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ars_record->length = SZ_4K;
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spin_lock(&badrange->lock);
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list_for_each_entry(be, &badrange->list, list) {
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u64 be_end = be->start + be->length - 1;
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u64 rstart, rend;
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/* skip entries outside the range */
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if (be_end < addr || be->start > end)
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continue;
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rstart = (be->start < addr) ? addr : be->start;
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rend = (be_end < end) ? be_end : end;
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ars_record = &ars_status->records[i];
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ars_record->handle = 0;
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ars_record->err_address = rstart;
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ars_record->length = rend - rstart + 1;
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i++;
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}
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spin_unlock(&badrange->lock);
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ars_status->num_records = i;
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ars_status->out_length = sizeof(struct nd_cmd_ars_status)
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+ i * sizeof(struct nd_ars_record);
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}
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static int nfit_test_cmd_ars_start(struct ars_state *ars_state,
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static int nfit_test_cmd_ars_start(struct nfit_test *t,
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struct ars_state *ars_state,
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struct nd_cmd_ars_start *ars_start, unsigned int buf_len,
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int *cmd_rc)
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{
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@ -289,7 +313,7 @@ static int nfit_test_cmd_ars_start(struct ars_state *ars_state,
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} else {
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ars_start->status = 0;
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ars_start->scrub_time = 1;
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post_ars_status(ars_state, ars_start->address,
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post_ars_status(ars_state, &t->badrange, ars_start->address,
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ars_start->length);
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*cmd_rc = 0;
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}
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@ -456,6 +480,93 @@ static int nfit_test_cmd_smart_threshold(struct nd_cmd_smart_threshold *smart_t,
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return 0;
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}
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static void uc_error_notify(struct work_struct *work)
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{
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struct nfit_test *t = container_of(work, typeof(*t), work);
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__acpi_nfit_notify(&t->pdev.dev, t, NFIT_NOTIFY_UC_MEMORY_ERROR);
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}
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static int nfit_test_cmd_ars_error_inject(struct nfit_test *t,
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struct nd_cmd_ars_err_inj *err_inj, unsigned int buf_len)
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{
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int rc;
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if (buf_len < sizeof(*err_inj)) {
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rc = -EINVAL;
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goto err;
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}
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if (err_inj->err_inj_spa_range_length <= 0) {
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rc = -EINVAL;
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goto err;
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}
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rc = badrange_add(&t->badrange, err_inj->err_inj_spa_range_base,
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err_inj->err_inj_spa_range_length);
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if (rc < 0)
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goto err;
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if (err_inj->err_inj_options & (1 << ND_ARS_ERR_INJ_OPT_NOTIFY))
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queue_work(nfit_wq, &t->work);
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err_inj->status = 0;
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return 0;
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err:
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err_inj->status = NFIT_ARS_INJECT_INVALID;
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return rc;
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}
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static int nfit_test_cmd_ars_inject_clear(struct nfit_test *t,
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struct nd_cmd_ars_err_inj_clr *err_clr, unsigned int buf_len)
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{
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int rc;
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if (buf_len < sizeof(*err_clr)) {
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rc = -EINVAL;
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goto err;
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}
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if (err_clr->err_inj_clr_spa_range_length <= 0) {
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rc = -EINVAL;
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goto err;
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}
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badrange_forget(&t->badrange, err_clr->err_inj_clr_spa_range_base,
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err_clr->err_inj_clr_spa_range_length);
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err_clr->status = 0;
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return 0;
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err:
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err_clr->status = NFIT_ARS_INJECT_INVALID;
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return rc;
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}
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static int nfit_test_cmd_ars_inject_status(struct nfit_test *t,
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struct nd_cmd_ars_err_inj_stat *err_stat,
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unsigned int buf_len)
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{
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struct badrange_entry *be;
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int max = SZ_4K / sizeof(struct nd_error_stat_query_record);
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int i = 0;
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err_stat->status = 0;
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spin_lock(&t->badrange.lock);
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list_for_each_entry(be, &t->badrange.list, list) {
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err_stat->record[i].err_inj_stat_spa_range_base = be->start;
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err_stat->record[i].err_inj_stat_spa_range_length = be->length;
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i++;
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if (i > max)
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break;
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}
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spin_unlock(&t->badrange.lock);
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err_stat->inj_err_rec_count = i;
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return 0;
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}
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static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
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struct nvdimm *nvdimm, unsigned int cmd, void *buf,
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unsigned int buf_len, int *cmd_rc)
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@ -543,6 +654,18 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
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rc = nfit_test_cmd_translate_spa(
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acpi_desc->nvdimm_bus, buf, buf_len);
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return rc;
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case NFIT_CMD_ARS_INJECT_SET:
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rc = nfit_test_cmd_ars_error_inject(t, buf,
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buf_len);
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return rc;
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case NFIT_CMD_ARS_INJECT_CLEAR:
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rc = nfit_test_cmd_ars_inject_clear(t, buf,
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buf_len);
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return rc;
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case NFIT_CMD_ARS_INJECT_GET:
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rc = nfit_test_cmd_ars_inject_status(t, buf,
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buf_len);
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return rc;
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default:
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return -ENOTTY;
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}
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@ -556,8 +679,8 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc,
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rc = nfit_test_cmd_ars_cap(buf, buf_len);
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break;
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case ND_CMD_ARS_START:
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rc = nfit_test_cmd_ars_start(ars_state, buf, buf_len,
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cmd_rc);
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rc = nfit_test_cmd_ars_start(t, ars_state, buf,
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buf_len, cmd_rc);
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break;
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case ND_CMD_ARS_STATUS:
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rc = nfit_test_cmd_ars_status(ars_state, buf, buf_len,
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@ -664,10 +787,9 @@ static struct nfit_test_resource *nfit_test_lookup(resource_size_t addr)
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static int ars_state_init(struct device *dev, struct ars_state *ars_state)
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{
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/* for testing, only store up to n records that fit within 4k */
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ars_state->ars_status = devm_kzalloc(dev,
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sizeof(struct nd_cmd_ars_status)
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+ sizeof(struct nd_ars_record) * NFIT_TEST_ARS_RECORDS,
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GFP_KERNEL);
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sizeof(struct nd_cmd_ars_status) + SZ_4K, GFP_KERNEL);
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if (!ars_state->ars_status)
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return -ENOMEM;
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spin_lock_init(&ars_state->lock);
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@ -1517,7 +1639,8 @@ static void nfit_test0_setup(struct nfit_test *t)
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+ i * sizeof(u64);
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}
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post_ars_status(&t->ars_state, t->spa_set_dma[0], SPA0_SIZE);
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post_ars_status(&t->ars_state, &t->badrange, t->spa_set_dma[0],
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SPA0_SIZE);
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acpi_desc = &t->acpi_desc;
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set_bit(ND_CMD_GET_CONFIG_SIZE, &acpi_desc->dimm_cmd_force_en);
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@ -1531,6 +1654,9 @@ static void nfit_test0_setup(struct nfit_test *t)
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set_bit(ND_CMD_CALL, &acpi_desc->bus_cmd_force_en);
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set_bit(ND_CMD_SMART_THRESHOLD, &acpi_desc->dimm_cmd_force_en);
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set_bit(NFIT_CMD_TRANSLATE_SPA, &acpi_desc->bus_nfit_cmd_force_en);
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set_bit(NFIT_CMD_ARS_INJECT_SET, &acpi_desc->bus_nfit_cmd_force_en);
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set_bit(NFIT_CMD_ARS_INJECT_CLEAR, &acpi_desc->bus_nfit_cmd_force_en);
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set_bit(NFIT_CMD_ARS_INJECT_GET, &acpi_desc->bus_nfit_cmd_force_en);
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}
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static void nfit_test1_setup(struct nfit_test *t)
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@ -1620,7 +1746,8 @@ static void nfit_test1_setup(struct nfit_test *t)
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dcr->code = NFIT_FIC_BYTE;
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dcr->windows = 0;
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post_ars_status(&t->ars_state, t->spa_set_dma[0], SPA2_SIZE);
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post_ars_status(&t->ars_state, &t->badrange, t->spa_set_dma[0],
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SPA2_SIZE);
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acpi_desc = &t->acpi_desc;
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set_bit(ND_CMD_ARS_CAP, &acpi_desc->bus_cmd_force_en);
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@ -1718,7 +1845,10 @@ static int nfit_ctl_test(struct device *dev)
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.module = THIS_MODULE,
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.provider_name = "ACPI.NFIT",
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.ndctl = acpi_nfit_ctl,
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.bus_dsm_mask = 1UL << NFIT_CMD_TRANSLATE_SPA,
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.bus_dsm_mask = 1UL << NFIT_CMD_TRANSLATE_SPA
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| 1UL << NFIT_CMD_ARS_INJECT_SET
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| 1UL << NFIT_CMD_ARS_INJECT_CLEAR
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| 1UL << NFIT_CMD_ARS_INJECT_GET,
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},
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.dev = &adev->dev,
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};
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@ -2017,6 +2147,10 @@ static __init int nfit_test_init(void)
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nfit_test_setup(nfit_test_lookup, nfit_test_evaluate_dsm);
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nfit_wq = create_singlethread_workqueue("nfit");
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if (!nfit_wq)
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return -ENOMEM;
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nfit_test_dimm = class_create(THIS_MODULE, "nfit_test_dimm");
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if (IS_ERR(nfit_test_dimm)) {
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rc = PTR_ERR(nfit_test_dimm);
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@ -2033,6 +2167,7 @@ static __init int nfit_test_init(void)
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goto err_register;
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}
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INIT_LIST_HEAD(&nfit_test->resources);
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badrange_init(&nfit_test->badrange);
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switch (i) {
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case 0:
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nfit_test->num_pm = NUM_PM;
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@ -2068,6 +2203,7 @@ static __init int nfit_test_init(void)
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goto err_register;
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instances[i] = nfit_test;
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INIT_WORK(&nfit_test->work, uc_error_notify);
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}
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rc = platform_driver_register(&nfit_test_driver);
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@ -2076,6 +2212,7 @@ static __init int nfit_test_init(void)
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return 0;
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err_register:
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destroy_workqueue(nfit_wq);
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for (i = 0; i < NUM_NFITS; i++)
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if (instances[i])
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platform_device_unregister(&instances[i]->pdev);
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@ -2091,6 +2228,8 @@ static __exit void nfit_test_exit(void)
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{
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int i;
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flush_workqueue(nfit_wq);
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destroy_workqueue(nfit_wq);
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for (i = 0; i < NUM_NFITS; i++)
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platform_device_unregister(&instances[i]->pdev);
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platform_driver_unregister(&nfit_test_driver);
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@ -33,6 +33,11 @@ struct nfit_test_resource {
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};
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#define ND_TRANSLATE_SPA_STATUS_INVALID_SPA 2
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#define NFIT_ARS_INJECT_INVALID 2
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enum err_inj_options {
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ND_ARS_ERR_INJ_OPT_NOTIFY = 0,
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};
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/* nfit commands */
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enum nfit_cmd_num {
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