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| author | Stanislav Nijnikov <stanislav.nijnikov@wdc.com> | 2018-02-15 14:14:05 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-02-15 18:34:24 -0500 |
| commit | c648c2d27f168ae4faeb43f8c3074226aae3862c (patch) | |
| tree | 11f41b8d2d1f64c8fcc512950f47e55b20698374 /drivers/scsi/ufs/ufshcd.c | |
| parent | c720c091222e26d46c0fd9c70144a0f916bf3993 (diff) | |
| download | lwn-c648c2d27f168ae4faeb43f8c3074226aae3862c.tar.gz lwn-c648c2d27f168ae4faeb43f8c3074226aae3862c.zip | |
scsi: ufs: sysfs: health descriptor
This patch introduces a sysfs group entry for the UFS health descriptor
parameters. The group adds "health_descriptor" folder under the UFS driver
sysfs entry (/sys/bus/platform/drivers/ufshcd/*). The parameters are shown
as hexadecimal numbers. The full information about the parameters could be
found at UFS specifications 2.1.
Signed-off-by: Stanislav Nijnikov <stanislav.nijnikov@wdc.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.c')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 540a431e38ce..b88fcf7be47b 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -2966,6 +2966,9 @@ int ufshcd_map_desc_id_to_length(struct ufs_hba *hba, case QUERY_DESC_IDN_STRING: *desc_len = QUERY_DESC_MAX_SIZE; break; + case QUERY_DESC_IDN_HEALTH: + *desc_len = hba->desc_size.hlth_desc; + break; case QUERY_DESC_IDN_RFU_0: case QUERY_DESC_IDN_RFU_1: *desc_len = 0; @@ -6277,6 +6280,10 @@ static void ufshcd_init_desc_sizes(struct ufs_hba *hba) &hba->desc_size.geom_desc); if (err) hba->desc_size.geom_desc = QUERY_DESC_GEOMETRY_DEF_SIZE; + err = ufshcd_read_desc_length(hba, QUERY_DESC_IDN_HEALTH, 0, + &hba->desc_size.hlth_desc); + if (err) + hba->desc_size.hlth_desc = QUERY_DESC_HEALTH_DEF_SIZE; } static void ufshcd_def_desc_sizes(struct ufs_hba *hba) @@ -6287,6 +6294,7 @@ static void ufshcd_def_desc_sizes(struct ufs_hba *hba) hba->desc_size.conf_desc = QUERY_DESC_CONFIGURATION_DEF_SIZE; hba->desc_size.unit_desc = QUERY_DESC_UNIT_DEF_SIZE; hba->desc_size.geom_desc = QUERY_DESC_GEOMETRY_DEF_SIZE; + hba->desc_size.hlth_desc = QUERY_DESC_HEALTH_DEF_SIZE; } /** |