diff options
Diffstat (limited to 'drivers/nvdimm')
| -rw-r--r-- | drivers/nvdimm/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/nvdimm/dimm_devs.c | 9 | ||||
| -rw-r--r-- | drivers/nvdimm/security.c | 4 |
3 files changed, 24 insertions, 1 deletions
diff --git a/drivers/nvdimm/Kconfig b/drivers/nvdimm/Kconfig index 5a29046e3319..79d93126453d 100644 --- a/drivers/nvdimm/Kconfig +++ b/drivers/nvdimm/Kconfig @@ -114,4 +114,16 @@ config NVDIMM_TEST_BUILD core devm_memremap_pages() implementation and other infrastructure. +config NVDIMM_SECURITY_TEST + bool "Enable NVDIMM security unit tests" + depends on NVDIMM_KEYS + help + The NVDIMM and CXL subsystems support unit testing of their device + security state machines. The NVDIMM_SECURITY_TEST option disables CPU + cache maintenance operations around events like secure erase and + overwrite. Also, when enabled, the NVDIMM subsystem core helps the unit + test implement a mock state machine. + + Select N if unsure. + endif diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c index c7c980577491..1fc081dcf631 100644 --- a/drivers/nvdimm/dimm_devs.c +++ b/drivers/nvdimm/dimm_devs.c @@ -349,11 +349,18 @@ static ssize_t available_slots_show(struct device *dev, } static DEVICE_ATTR_RO(available_slots); -__weak ssize_t security_show(struct device *dev, +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. + */ + if (IS_ENABLED(CONFIG_NVDIMM_SECURITY_TEST)) + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); + if (test_bit(NVDIMM_SECURITY_OVERWRITE, &nvdimm->sec.flags)) return sprintf(buf, "overwrite\n"); if (test_bit(NVDIMM_SECURITY_DISABLED, &nvdimm->sec.flags)) diff --git a/drivers/nvdimm/security.c b/drivers/nvdimm/security.c index 92af4c3ca0d3..6814339b3dab 100644 --- a/drivers/nvdimm/security.c +++ b/drivers/nvdimm/security.c @@ -177,6 +177,10 @@ static int __nvdimm_security_unlock(struct nvdimm *nvdimm) || !nvdimm->sec.flags) return -EIO; + /* cxl_test needs this to pre-populate the security state */ + if (IS_ENABLED(CONFIG_NVDIMM_SECURITY_TEST)) + nvdimm->sec.flags = nvdimm_security_flags(nvdimm, NVDIMM_USER); + /* No need to go further if security is disabled */ if (test_bit(NVDIMM_SECURITY_DISABLED, &nvdimm->sec.flags)) return 0; |