diff options
Diffstat (limited to 'drivers/cxl')
| -rw-r--r-- | drivers/cxl/mem.h | 3 | ||||
| -rw-r--r-- | drivers/cxl/pci.c | 12 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/cxl/mem.h b/drivers/cxl/mem.h index 0a3f70316872..23fc40dde27e 100644 --- a/drivers/cxl/mem.h +++ b/drivers/cxl/mem.h @@ -54,6 +54,8 @@ struct cxl_memdev { * @regs: Parsed register blocks * @payload_size: Size of space for payload * (CXL 2.0 8.2.8.4.3 Mailbox Capabilities Register) + * @lsa_size: Size of Label Storage Area + * (CXL 2.0 8.2.9.5.1.1 Identify Memory Device) * @mbox_mutex: Mutex to synchronize mailbox access. * @firmware_version: Firmware version for the memory device. * @enabled_cmds: Hardware commands found enabled in CEL. @@ -68,6 +70,7 @@ struct cxl_mem { struct cxl_regs regs; size_t payload_size; + size_t lsa_size; struct mutex mbox_mutex; /* Protects device mailbox and firmware */ char firmware_version[0x10]; unsigned long *enabled_cmds; diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c index c7996c2a2054..606c88ca902b 100644 --- a/drivers/cxl/pci.c +++ b/drivers/cxl/pci.c @@ -1036,6 +1036,16 @@ static ssize_t payload_max_show(struct device *dev, } static DEVICE_ATTR_RO(payload_max); +static ssize_t label_storage_size_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cxl_memdev *cxlmd = to_cxl_memdev(dev); + struct cxl_mem *cxlm = cxlmd->cxlm; + + return sysfs_emit(buf, "%zu\n", cxlm->lsa_size); +} +static DEVICE_ATTR_RO(label_storage_size); + static ssize_t ram_size_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1065,6 +1075,7 @@ static struct device_attribute dev_attr_pmem_size = static struct attribute *cxl_memdev_attributes[] = { &dev_attr_firmware_version.attr, &dev_attr_payload_max.attr, + &dev_attr_label_storage_size.attr, NULL, }; @@ -1397,6 +1408,7 @@ static int cxl_mem_identify(struct cxl_mem *cxlm) cxlm->pmem_range.end = le64_to_cpu(id.persistent_capacity) * SZ_256M - 1; + cxlm->lsa_size = le32_to_cpu(id.lsa_size); memcpy(cxlm->firmware_version, id.fw_revision, sizeof(id.fw_revision)); return 0; |