diff options
| author | Avri Altman <avri.altman@wdc.com> | 2024-08-11 17:37:57 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-08-12 22:11:24 -0400 |
| commit | f51d748195773c7780deca815dc787c281d77eb5 (patch) | |
| tree | 03a579ea59f7823b5c4cb49fa5315689defcba30 /drivers/ufs | |
| parent | b9d104465a6c2f1bb27ae247bd90b4ab079a1699 (diff) | |
scsi: ufs: Add HCI capabilities sysfs group
The standard register map of UFSHCI is comprised of several groups. The
first group (starting from offset 0x00), is the host capabilities group.
It contains some interesting information that otherwise is not available,
e.g. the UFS version of the platform etc.
Reviewed-by: Keoseong Park <keosung.park@samsung.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20240811143757.2538212-3-avri.altman@wdc.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs')
| -rw-r--r-- | drivers/ufs/core/ufs-sysfs.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/ufs/core/ufs-sysfs.c b/drivers/ufs/core/ufs-sysfs.c index dec7746c98e0..fe313800aed0 100644 --- a/drivers/ufs/core/ufs-sysfs.c +++ b/drivers/ufs/core/ufs-sysfs.c @@ -525,6 +525,58 @@ static const struct attribute_group ufs_sysfs_capabilities_group = { .attrs = ufs_sysfs_capabilities_attrs, }; +static ssize_t version_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ufs_hba *hba = dev_get_drvdata(dev); + + return sysfs_emit(buf, "0x%x\n", hba->ufs_version); +} + +static ssize_t product_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ret; + u32 val; + struct ufs_hba *hba = dev_get_drvdata(dev); + + ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_PID); + if (ret) + return ret; + + return sysfs_emit(buf, "0x%x\n", val); +} + +static ssize_t man_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ret; + u32 val; + struct ufs_hba *hba = dev_get_drvdata(dev); + + ret = ufshcd_read_hci_reg(hba, &val, REG_CONTROLLER_MID); + if (ret) + return ret; + + return sysfs_emit(buf, "0x%x\n", val); +} + +static DEVICE_ATTR_RO(version); +static DEVICE_ATTR_RO(product_id); +static DEVICE_ATTR_RO(man_id); + +static struct attribute *ufs_sysfs_ufshci_cap_attrs[] = { + &dev_attr_version.attr, + &dev_attr_product_id.attr, + &dev_attr_man_id.attr, + NULL +}; + +static const struct attribute_group ufs_sysfs_ufshci_group = { + .name = "ufshci_capabilities", + .attrs = ufs_sysfs_ufshci_cap_attrs, +}; + static ssize_t monitor_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1508,6 +1560,7 @@ static const struct attribute_group ufs_sysfs_attributes_group = { static const struct attribute_group *ufs_sysfs_groups[] = { &ufs_sysfs_default_group, &ufs_sysfs_capabilities_group, + &ufs_sysfs_ufshci_group, &ufs_sysfs_monitor_group, &ufs_sysfs_power_info_group, &ufs_sysfs_device_descriptor_group, |