diff options
Diffstat (limited to 'tools/testing/nvdimm')
-rw-r--r-- | tools/testing/nvdimm/Kbuild | 3 | ||||
-rw-r--r-- | tools/testing/nvdimm/dimm_devs.c | 41 | ||||
-rw-r--r-- | tools/testing/nvdimm/test/iomap.c | 17 | ||||
-rw-r--r-- | tools/testing/nvdimm/test/nfit.c | 356 |
4 files changed, 413 insertions, 4 deletions
diff --git a/tools/testing/nvdimm/Kbuild b/tools/testing/nvdimm/Kbuild index 778ceb651000..10ddf223055b 100644 --- a/tools/testing/nvdimm/Kbuild +++ b/tools/testing/nvdimm/Kbuild @@ -37,6 +37,7 @@ obj-$(CONFIG_DEV_DAX) += device_dax.o obj-$(CONFIG_DEV_DAX_PMEM) += dax_pmem.o nfit-y := $(ACPI_SRC)/core.o +nfit-y += $(ACPI_SRC)/intel.o nfit-$(CONFIG_X86_MCE) += $(ACPI_SRC)/mce.o nfit-y += acpi_nfit_test.o nfit-y += config_check.o @@ -79,6 +80,8 @@ libnvdimm-$(CONFIG_ND_CLAIM) += $(NVDIMM_SRC)/claim.o libnvdimm-$(CONFIG_BTT) += $(NVDIMM_SRC)/btt_devs.o libnvdimm-$(CONFIG_NVDIMM_PFN) += $(NVDIMM_SRC)/pfn_devs.o libnvdimm-$(CONFIG_NVDIMM_DAX) += $(NVDIMM_SRC)/dax_devs.o +libnvdimm-$(CONFIG_NVDIMM_KEYS) += $(NVDIMM_SRC)/security.o +libnvdimm-y += dimm_devs.o libnvdimm-y += libnvdimm_test.o libnvdimm-y += config_check.o diff --git a/tools/testing/nvdimm/dimm_devs.c b/tools/testing/nvdimm/dimm_devs.c new file mode 100644 index 000000000000..e75238404555 --- /dev/null +++ b/tools/testing/nvdimm/dimm_devs.c @@ -0,0 +1,41 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright Intel Corp. 2018 */ +#include <linux/init.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/nd.h> +#include "pmem.h" +#include "pfn.h" +#include "nd.h" +#include "nd-core.h" + +ssize_t security_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct nvdimm *nvdimm = to_nvdimm(dev); + + /* + * For the test version we need to poll the "hardware" in order + * to get the updated status for unlock testing. + */ + nvdimm->sec.state = nvdimm_security_state(nvdimm, false); + nvdimm->sec.ext_state = nvdimm_security_state(nvdimm, true); + + switch (nvdimm->sec.state) { + case NVDIMM_SECURITY_DISABLED: + return sprintf(buf, "disabled\n"); + case NVDIMM_SECURITY_UNLOCKED: + return sprintf(buf, "unlocked\n"); + case NVDIMM_SECURITY_LOCKED: + return sprintf(buf, "locked\n"); + case NVDIMM_SECURITY_FROZEN: + return sprintf(buf, "frozen\n"); + case NVDIMM_SECURITY_OVERWRITE: + return sprintf(buf, "overwrite\n"); + default: + return -ENOTTY; + } + + return -ENOTTY; +} + diff --git a/tools/testing/nvdimm/test/iomap.c b/tools/testing/nvdimm/test/iomap.c index ff9d3a5825e1..c6635fee27d8 100644 --- a/tools/testing/nvdimm/test/iomap.c +++ b/tools/testing/nvdimm/test/iomap.c @@ -104,16 +104,29 @@ void *__wrap_devm_memremap(struct device *dev, resource_size_t offset, } EXPORT_SYMBOL(__wrap_devm_memremap); +static void nfit_test_kill(void *_pgmap) +{ + struct dev_pagemap *pgmap = _pgmap; + + pgmap->kill(pgmap->ref); +} + void *__wrap_devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap) { resource_size_t offset = pgmap->res.start; struct nfit_test_resource *nfit_res = get_nfit_res(offset); - if (nfit_res) + if (nfit_res) { + int rc; + + rc = devm_add_action_or_reset(dev, nfit_test_kill, pgmap); + if (rc) + return ERR_PTR(rc); return nfit_res->buf + offset - nfit_res->res.start; + } return devm_memremap_pages(dev, pgmap); } -EXPORT_SYMBOL(__wrap_devm_memremap_pages); +EXPORT_SYMBOL_GPL(__wrap_devm_memremap_pages); pfn_t __wrap_phys_to_pfn_t(phys_addr_t addr, unsigned long flags) { diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c index 01ec04bf91b5..b579f962451d 100644 --- a/tools/testing/nvdimm/test/nfit.c +++ b/tools/testing/nvdimm/test/nfit.c @@ -15,6 +15,7 @@ #include <linux/dma-mapping.h> #include <linux/workqueue.h> #include <linux/libnvdimm.h> +#include <linux/genalloc.h> #include <linux/vmalloc.h> #include <linux/device.h> #include <linux/module.h> @@ -142,6 +143,13 @@ static u32 handle[] = { static unsigned long dimm_fail_cmd_flags[ARRAY_SIZE(handle)]; static int dimm_fail_cmd_code[ARRAY_SIZE(handle)]; +struct nfit_test_sec { + u8 state; + u8 ext_state; + u8 passphrase[32]; + u8 master_passphrase[32]; + u64 overwrite_end_time; +} dimm_sec_info[NUM_DCR]; static const struct nd_intel_smart smart_def = { .flags = ND_INTEL_SMART_HEALTH_VALID @@ -215,6 +223,8 @@ struct nfit_test { static struct workqueue_struct *nfit_wq; +static struct gen_pool *nfit_pool; + static struct nfit_test *to_nfit_test(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); @@ -933,6 +943,242 @@ static int override_return_code(int dimm, unsigned int func, int rc) return rc; } +static int nd_intel_test_cmd_security_status(struct nfit_test *t, + struct nd_intel_get_security_state *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + nd_cmd->status = 0; + nd_cmd->state = sec->state; + nd_cmd->extended_state = sec->ext_state; + dev_dbg(dev, "security state (%#x) returned\n", nd_cmd->state); + + return 0; +} + +static int nd_intel_test_cmd_unlock_unit(struct nfit_test *t, + struct nd_intel_unlock_unit *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if (!(sec->state & ND_INTEL_SEC_STATE_LOCKED) || + (sec->state & ND_INTEL_SEC_STATE_FROZEN)) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE; + dev_dbg(dev, "unlock unit: invalid state: %#x\n", + sec->state); + } else if (memcmp(nd_cmd->passphrase, sec->passphrase, + ND_INTEL_PASSPHRASE_SIZE) != 0) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS; + dev_dbg(dev, "unlock unit: invalid passphrase\n"); + } else { + nd_cmd->status = 0; + sec->state = ND_INTEL_SEC_STATE_ENABLED; + dev_dbg(dev, "Unit unlocked\n"); + } + + dev_dbg(dev, "unlocking status returned: %#x\n", nd_cmd->status); + return 0; +} + +static int nd_intel_test_cmd_set_pass(struct nfit_test *t, + struct nd_intel_set_passphrase *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if (sec->state & ND_INTEL_SEC_STATE_FROZEN) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE; + dev_dbg(dev, "set passphrase: wrong security state\n"); + } else if (memcmp(nd_cmd->old_pass, sec->passphrase, + ND_INTEL_PASSPHRASE_SIZE) != 0) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS; + dev_dbg(dev, "set passphrase: wrong passphrase\n"); + } else { + memcpy(sec->passphrase, nd_cmd->new_pass, + ND_INTEL_PASSPHRASE_SIZE); + sec->state |= ND_INTEL_SEC_STATE_ENABLED; + nd_cmd->status = 0; + dev_dbg(dev, "passphrase updated\n"); + } + + return 0; +} + +static int nd_intel_test_cmd_freeze_lock(struct nfit_test *t, + struct nd_intel_freeze_lock *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if (!(sec->state & ND_INTEL_SEC_STATE_ENABLED)) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE; + dev_dbg(dev, "freeze lock: wrong security state\n"); + } else { + sec->state |= ND_INTEL_SEC_STATE_FROZEN; + nd_cmd->status = 0; + dev_dbg(dev, "security frozen\n"); + } + + return 0; +} + +static int nd_intel_test_cmd_disable_pass(struct nfit_test *t, + struct nd_intel_disable_passphrase *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if (!(sec->state & ND_INTEL_SEC_STATE_ENABLED) || + (sec->state & ND_INTEL_SEC_STATE_FROZEN)) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE; + dev_dbg(dev, "disable passphrase: wrong security state\n"); + } else if (memcmp(nd_cmd->passphrase, sec->passphrase, + ND_INTEL_PASSPHRASE_SIZE) != 0) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS; + dev_dbg(dev, "disable passphrase: wrong passphrase\n"); + } else { + memset(sec->passphrase, 0, ND_INTEL_PASSPHRASE_SIZE); + sec->state = 0; + dev_dbg(dev, "disable passphrase: done\n"); + } + + return 0; +} + +static int nd_intel_test_cmd_secure_erase(struct nfit_test *t, + struct nd_intel_secure_erase *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if (!(sec->state & ND_INTEL_SEC_STATE_ENABLED) || + (sec->state & ND_INTEL_SEC_STATE_FROZEN)) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE; + dev_dbg(dev, "secure erase: wrong security state\n"); + } else if (memcmp(nd_cmd->passphrase, sec->passphrase, + ND_INTEL_PASSPHRASE_SIZE) != 0) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS; + dev_dbg(dev, "secure erase: wrong passphrase\n"); + } else { + memset(sec->passphrase, 0, ND_INTEL_PASSPHRASE_SIZE); + memset(sec->master_passphrase, 0, ND_INTEL_PASSPHRASE_SIZE); + sec->state = 0; + sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED; + dev_dbg(dev, "secure erase: done\n"); + } + + return 0; +} + +static int nd_intel_test_cmd_overwrite(struct nfit_test *t, + struct nd_intel_overwrite *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if ((sec->state & ND_INTEL_SEC_STATE_ENABLED) && + memcmp(nd_cmd->passphrase, sec->passphrase, + ND_INTEL_PASSPHRASE_SIZE) != 0) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS; + dev_dbg(dev, "overwrite: wrong passphrase\n"); + return 0; + } + + memset(sec->passphrase, 0, ND_INTEL_PASSPHRASE_SIZE); + sec->state = ND_INTEL_SEC_STATE_OVERWRITE; + dev_dbg(dev, "overwrite progressing.\n"); + sec->overwrite_end_time = get_jiffies_64() + 5 * HZ; + + return 0; +} + +static int nd_intel_test_cmd_query_overwrite(struct nfit_test *t, + struct nd_intel_query_overwrite *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if (!(sec->state & ND_INTEL_SEC_STATE_OVERWRITE)) { + nd_cmd->status = ND_INTEL_STATUS_OQUERY_SEQUENCE_ERR; + return 0; + } + + if (time_is_before_jiffies64(sec->overwrite_end_time)) { + sec->overwrite_end_time = 0; + sec->state = 0; + sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED; + dev_dbg(dev, "overwrite is complete\n"); + } else + nd_cmd->status = ND_INTEL_STATUS_OQUERY_INPROGRESS; + return 0; +} + +static int nd_intel_test_cmd_master_set_pass(struct nfit_test *t, + struct nd_intel_set_master_passphrase *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if (!(sec->ext_state & ND_INTEL_SEC_ESTATE_ENABLED)) { + nd_cmd->status = ND_INTEL_STATUS_NOT_SUPPORTED; + dev_dbg(dev, "master set passphrase: in wrong state\n"); + } else if (sec->ext_state & ND_INTEL_SEC_ESTATE_PLIMIT) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE; + dev_dbg(dev, "master set passphrase: in wrong security state\n"); + } else if (memcmp(nd_cmd->old_pass, sec->master_passphrase, + ND_INTEL_PASSPHRASE_SIZE) != 0) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS; + dev_dbg(dev, "master set passphrase: wrong passphrase\n"); + } else { + memcpy(sec->master_passphrase, nd_cmd->new_pass, + ND_INTEL_PASSPHRASE_SIZE); + sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED; + dev_dbg(dev, "master passphrase: updated\n"); + } + + return 0; +} + +static int nd_intel_test_cmd_master_secure_erase(struct nfit_test *t, + struct nd_intel_master_secure_erase *nd_cmd, + unsigned int buf_len, int dimm) +{ + struct device *dev = &t->pdev.dev; + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + if (!(sec->ext_state & ND_INTEL_SEC_ESTATE_ENABLED)) { + nd_cmd->status = ND_INTEL_STATUS_NOT_SUPPORTED; + dev_dbg(dev, "master secure erase: in wrong state\n"); + } else if (sec->ext_state & ND_INTEL_SEC_ESTATE_PLIMIT) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_STATE; + dev_dbg(dev, "master secure erase: in wrong security state\n"); + } else if (memcmp(nd_cmd->passphrase, sec->master_passphrase, + ND_INTEL_PASSPHRASE_SIZE) != 0) { + nd_cmd->status = ND_INTEL_STATUS_INVALID_PASS; + dev_dbg(dev, "master secure erase: wrong passphrase\n"); + } else { + /* we do not erase master state passphrase ever */ + sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED; + memset(sec->passphrase, 0, ND_INTEL_PASSPHRASE_SIZE); + sec->state = 0; + dev_dbg(dev, "master secure erase: done\n"); + } + + return 0; +} + + static int get_dimm(struct nfit_mem *nfit_mem, unsigned int func) { int i; @@ -980,6 +1226,46 @@ static int nfit_test_ctl(struct nvdimm_bus_descriptor *nd_desc, return i; switch (func) { + case NVDIMM_INTEL_GET_SECURITY_STATE: + rc = nd_intel_test_cmd_security_status(t, + buf, buf_len, i); + break; + case NVDIMM_INTEL_UNLOCK_UNIT: + rc = nd_intel_test_cmd_unlock_unit(t, + buf, buf_len, i); + break; + case NVDIMM_INTEL_SET_PASSPHRASE: + rc = nd_intel_test_cmd_set_pass(t, + buf, buf_len, i); + break; + case NVDIMM_INTEL_DISABLE_PASSPHRASE: + rc = nd_intel_test_cmd_disable_pass(t, + buf, buf_len, i); + break; + case NVDIMM_INTEL_FREEZE_LOCK: + rc = nd_intel_test_cmd_freeze_lock(t, + buf, buf_len, i); + break; + case NVDIMM_INTEL_SECURE_ERASE: + rc = nd_intel_test_cmd_secure_erase(t, + buf, buf_len, i); + break; + case NVDIMM_INTEL_OVERWRITE: + rc = nd_intel_test_cmd_overwrite(t, + buf, buf_len, i - t->dcr_idx); + break; + case NVDIMM_INTEL_QUERY_OVERWRITE: + rc = nd_intel_test_cmd_query_overwrite(t, + buf, buf_len, i - t->dcr_idx); + break; + case NVDIMM_INTEL_SET_MASTER_PASSPHRASE: + rc = nd_intel_test_cmd_master_set_pass(t, + buf, buf_len, i); + break; + case NVDIMM_INTEL_MASTER_SECURE_ERASE: + rc = nd_intel_test_cmd_master_secure_erase(t, + buf, buf_len, i); + break; case ND_INTEL_ENABLE_LSS_STATUS: rc = nd_intel_test_cmd_set_lss_status(t, buf, buf_len); @@ -1132,6 +1418,9 @@ static void release_nfit_res(void *data) list_del(&nfit_res->list); spin_unlock(&nfit_test_lock); + if (resource_size(&nfit_res->res) >= DIMM_SIZE) + gen_pool_free(nfit_pool, nfit_res->res.start, + resource_size(&nfit_res->res)); vfree(nfit_res->buf); kfree(nfit_res); } @@ -1144,7 +1433,7 @@ static void *__test_alloc(struct nfit_test *t, size_t size, dma_addr_t *dma, GFP_KERNEL); int rc; - if (!buf || !nfit_res) + if (!buf || !nfit_res || !*dma) goto err; rc = devm_add_action(dev, release_nfit_res, nfit_res); if (rc) @@ -1164,6 +1453,8 @@ static void *__test_alloc(struct nfit_test *t, size_t size, dma_addr_t *dma, return nfit_res->buf; err: + if (*dma && size >= DIMM_SIZE) + gen_pool_free(nfit_pool, *dma, size); if (buf) vfree(buf); kfree(nfit_res); @@ -1172,9 +1463,16 @@ static void *__test_alloc(struct nfit_test *t, size_t size, dma_addr_t *dma, static void *test_alloc(struct nfit_test *t, size_t size, dma_addr_t *dma) { + struct genpool_data_align data = { + .align = SZ_128M, + }; void *buf = vmalloc(size); - *dma = (unsigned long) buf; + if (size >= DIMM_SIZE) + *dma = gen_pool_alloc_algo(nfit_pool, size, + gen_pool_first_fit_align, &data); + else + *dma = (unsigned long) buf; return __test_alloc(t, size, dma, buf); } @@ -1313,10 +1611,22 @@ static ssize_t fail_cmd_code_store(struct device *dev, struct device_attribute * } static DEVICE_ATTR_RW(fail_cmd_code); +static ssize_t lock_dimm_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t size) +{ + int dimm = dimm_name_to_id(dev); + struct nfit_test_sec *sec = &dimm_sec_info[dimm]; + + sec->state = ND_INTEL_SEC_STATE_ENABLED | ND_INTEL_SEC_STATE_LOCKED; + return size; +} +static DEVICE_ATTR_WO(lock_dimm); + static struct attribute *nfit_test_dimm_attributes[] = { &dev_attr_fail_cmd.attr, &dev_attr_fail_cmd_code.attr, &dev_attr_handle.attr, + &dev_attr_lock_dimm.attr, NULL, }; @@ -1346,6 +1656,17 @@ static int nfit_test_dimm_init(struct nfit_test *t) return 0; } +static void security_init(struct nfit_test *t) +{ + int i; + + for (i = 0; i < t->num_dcr; i++) { + struct nfit_test_sec *sec = &dimm_sec_info[i]; + + sec->ext_state = ND_INTEL_SEC_ESTATE_ENABLED; + } +} + static void smart_init(struct nfit_test *t) { int i; @@ -1424,6 +1745,7 @@ static int nfit_test0_alloc(struct nfit_test *t) if (nfit_test_dimm_init(t)) return -ENOMEM; smart_init(t); + security_init(t); return ars_state_init(&t->pdev.dev, &t->ars_state); } @@ -2195,6 +2517,20 @@ static void nfit_test0_setup(struct nfit_test *t) set_bit(ND_INTEL_FW_FINISH_UPDATE, &acpi_desc->dimm_cmd_force_en); set_bit(ND_INTEL_FW_FINISH_QUERY, &acpi_desc->dimm_cmd_force_en); set_bit(ND_INTEL_ENABLE_LSS_STATUS, &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_GET_SECURITY_STATE, + &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_SET_PASSPHRASE, &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_DISABLE_PASSPHRASE, + &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_UNLOCK_UNIT, &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_FREEZE_LOCK, &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_SECURE_ERASE, &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_OVERWRITE, &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_QUERY_OVERWRITE, &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_SET_MASTER_PASSPHRASE, + &acpi_desc->dimm_cmd_force_en); + set_bit(NVDIMM_INTEL_MASTER_SECURE_ERASE, + &acpi_desc->dimm_cmd_force_en); } static void nfit_test1_setup(struct nfit_test *t) @@ -2839,6 +3175,17 @@ static __init int nfit_test_init(void) goto err_register; } + nfit_pool = gen_pool_create(ilog2(SZ_4M), NUMA_NO_NODE); + if (!nfit_pool) { + rc = -ENOMEM; + goto err_register; + } + + if (gen_pool_add(nfit_pool, SZ_4G, SZ_4G, NUMA_NO_NODE)) { + rc = -ENOMEM; + goto err_register; + } + for (i = 0; i < NUM_NFITS; i++) { struct nfit_test *nfit_test; struct platform_device *pdev; @@ -2894,6 +3241,9 @@ static __init int nfit_test_init(void) return 0; err_register: + if (nfit_pool) + gen_pool_destroy(nfit_pool); + destroy_workqueue(nfit_wq); for (i = 0; i < NUM_NFITS; i++) if (instances[i]) @@ -2917,6 +3267,8 @@ static __exit void nfit_test_exit(void) platform_driver_unregister(&nfit_test_driver); nfit_test_teardown(); + gen_pool_destroy(nfit_pool); + for (i = 0; i < NUM_NFITS; i++) put_device(&instances[i]->pdev.dev); class_destroy(nfit_test_dimm); |