diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2022-11-30 20:22:56 +0100 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-12-01 21:42:35 +0100 |
| commit | 18fa556375c0e28f067f4a52e9f11d4fd2cf6842 (patch) | |
| tree | f15026fc4f70ff2aeaef90872d703aa4e69a4c43 /tools/testing/cxl | |
| parent | cxl/pmem: add id attribute to CXL based nvdimm (diff) | |
| download | linux-18fa556375c0e28f067f4a52e9f11d4fd2cf6842.tar.xz linux-18fa556375c0e28f067f4a52e9f11d4fd2cf6842.zip | |
tools/testing/cxl: add mechanism to lock mem device for testing
The mock cxl mem devs needs a way to go into "locked" status to simulate
when the platform is rebooted. Add a sysfs mechanism so the device security
state is set to "locked" and the frozen state bits are cleared.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/166983617602.2734609.7042497620931694717.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'tools/testing/cxl')
| -rw-r--r-- | tools/testing/cxl/test/mem.c | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c index 1008ee2e1e31..35d9ad04e0d6 100644 --- a/tools/testing/cxl/test/mem.c +++ b/tools/testing/cxl/test/mem.c @@ -245,7 +245,7 @@ static int mock_set_passphrase(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd static int mock_disable_passphrase(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) { - struct cxl_mock_mem_pdata *mdata = dev_get_platdata(cxlds->dev); + struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev); struct cxl_disable_pass *dis_pass; if (cmd->size_in != sizeof(*dis_pass)) @@ -316,7 +316,7 @@ static int mock_disable_passphrase(struct cxl_dev_state *cxlds, struct cxl_mbox_ static int mock_freeze_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) { - struct cxl_mock_mem_pdata *mdata = dev_get_platdata(cxlds->dev); + struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev); if (cmd->size_in != 0) return -EINVAL; @@ -333,7 +333,7 @@ static int mock_freeze_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd static int mock_unlock_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) { - struct cxl_mock_mem_pdata *mdata = dev_get_platdata(cxlds->dev); + struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev); if (cmd->size_in != NVDIMM_PASSPHRASE_LEN) return -EINVAL; @@ -376,7 +376,7 @@ static int mock_unlock_security(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd static int mock_passphrase_secure_erase(struct cxl_dev_state *cxlds, struct cxl_mbox_cmd *cmd) { - struct cxl_mock_mem_pdata *mdata = dev_get_platdata(cxlds->dev); + struct cxl_mockmem_data *mdata = dev_get_drvdata(cxlds->dev); struct cxl_pass_erase *erase; if (cmd->size_in != sizeof(*erase)) @@ -650,6 +650,45 @@ static int cxl_mock_mem_probe(struct platform_device *pdev) return 0; } +static ssize_t security_lock_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cxl_mockmem_data *mdata = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%u\n", + !!(mdata->security_state & CXL_PMEM_SEC_STATE_LOCKED)); +} + +static ssize_t security_lock_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cxl_mockmem_data *mdata = dev_get_drvdata(dev); + u32 mask = CXL_PMEM_SEC_STATE_FROZEN | CXL_PMEM_SEC_STATE_USER_PLIMIT | + CXL_PMEM_SEC_STATE_MASTER_PLIMIT; + int val; + + if (kstrtoint(buf, 0, &val) < 0) + return -EINVAL; + + if (val == 1) { + if (!(mdata->security_state & CXL_PMEM_SEC_STATE_USER_PASS_SET)) + return -ENXIO; + mdata->security_state |= CXL_PMEM_SEC_STATE_LOCKED; + mdata->security_state &= ~mask; + } else { + return -EINVAL; + } + return count; +} + +static DEVICE_ATTR_RW(security_lock); + +static struct attribute *cxl_mock_mem_attrs[] = { + &dev_attr_security_lock.attr, + NULL +}; +ATTRIBUTE_GROUPS(cxl_mock_mem); + static const struct platform_device_id cxl_mock_mem_ids[] = { { .name = "cxl_mem", }, { }, @@ -661,6 +700,7 @@ static struct platform_driver cxl_mock_mem_driver = { .id_table = cxl_mock_mem_ids, .driver = { .name = KBUILD_MODNAME, + .dev_groups = cxl_mock_mem_groups, }, }; |