diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2022-12-01 14:03:19 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2022-12-02 23:52:32 -0800 |
| commit | b5807c80b5bc49764724ca22e83c04f527e86fd4 (patch) | |
| tree | 2111e7e77a03a1af9d60044511c78e1306df7a3e /drivers/cxl | |
| parent | 15a8348707ffd2a37516db9bede88cc0bb467e0b (diff) | |
| download | linux-b5807c80b5bc49764724ca22e83c04f527e86fd4.tar.bz2 | |
cxl: add dimm_id support for __nvdimm_create()
Set the cxlds->serial as the dimm_id to be fed to __nvdimm_create(). The
security code uses that as the key description for the security key of the
memory device. The nvdimm unlock code cannot find the respective key
without the dimm_id.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/166863357043.80269.4337575149671383294.stgit@djiang5-desk3.ch.intel.com
Link: https://lore.kernel.org/r/166983620459.2734609.10175456773200251184.stgit@djiang5-desk3.ch.intel.com
Link: https://lore.kernel.org/r/166993219918.1995348.10786511454826454601.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl')
| -rw-r--r-- | drivers/cxl/core/pmem.c | 7 | ||||
| -rw-r--r-- | drivers/cxl/cxl.h | 3 | ||||
| -rw-r--r-- | drivers/cxl/pmem.c | 3 |
3 files changed, 12 insertions, 1 deletions
diff --git a/drivers/cxl/core/pmem.c b/drivers/cxl/core/pmem.c index 36aa5070d902..7b9a9573e6f2 100644 --- a/drivers/cxl/core/pmem.c +++ b/drivers/cxl/core/pmem.c @@ -238,6 +238,13 @@ static struct cxl_nvdimm *cxl_nvdimm_alloc(struct cxl_memdev *cxlmd) dev->parent = &cxlmd->dev; dev->bus = &cxl_bus_type; dev->type = &cxl_nvdimm_type; + /* + * A "%llx" string is 17-bytes vs dimm_id that is max + * NVDIMM_KEY_DESC_LEN + */ + BUILD_BUG_ON(sizeof(cxl_nvd->dev_id) < 17 || + sizeof(cxl_nvd->dev_id) > NVDIMM_KEY_DESC_LEN); + sprintf(cxl_nvd->dev_id, "%llx", cxlmd->cxlds->serial); return cxl_nvd; } diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 7d07127eade3..b433e541a054 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -420,11 +420,14 @@ struct cxl_nvdimm_bridge { enum cxl_nvdimm_brige_state state; }; +#define CXL_DEV_ID_LEN 19 + struct cxl_nvdimm { struct device dev; struct cxl_memdev *cxlmd; struct cxl_nvdimm_bridge *bridge; struct xarray pmem_regions; + u8 dev_id[CXL_DEV_ID_LEN]; /* for nvdimm, string of 'serial' */ }; struct cxl_pmem_region_mapping { diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c index 403e41bcbf2b..ab40c93c44e5 100644 --- a/drivers/cxl/pmem.c +++ b/drivers/cxl/pmem.c @@ -117,7 +117,8 @@ static int cxl_nvdimm_probe(struct device *dev) set_bit(ND_CMD_SET_CONFIG_DATA, &cmd_mask); nvdimm = __nvdimm_create(cxl_nvb->nvdimm_bus, cxl_nvd, cxl_dimm_attribute_groups, flags, - cmd_mask, 0, NULL, NULL, cxl_security_ops, NULL); + cmd_mask, 0, NULL, cxl_nvd->dev_id, + cxl_security_ops, NULL); if (!nvdimm) { rc = -ENOMEM; goto out; |