forked from Minki/linux
scsi: smartpqi: add sysfs attributes
- add sysfs device attributes, unique_id, lunid and path_info. Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Dave Carroll <david.carroll@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dave Carroll
Martin K. Petersen
parent
02133b68d5
commit
cd12824416
@ -852,6 +852,7 @@ struct pqi_scsi_dev {
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u8 scsi3addr[8];
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__be64 wwid;
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u8 volume_id[16];
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u8 unique_id[16];
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u8 is_physical_device : 1;
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u8 is_external_raid_device : 1;
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u8 target_lun_valid : 1;
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@ -898,6 +899,8 @@ struct pqi_scsi_dev {
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#define CISS_VPD_LV_DEVICE_GEOMETRY 0xc1 /* vendor-specific page */
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#define CISS_VPD_LV_BYPASS_STATUS 0xc2 /* vendor-specific page */
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#define CISS_VPD_LV_STATUS 0xc3 /* vendor-specific page */
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#define SCSI_VPD_HEADER_SZ 4
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#define SCSI_VPD_DEVICE_ID_IDX 8 /* Index of page id in page */
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#define VPD_PAGE (1 << 8)
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@ -573,6 +573,79 @@ static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
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buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT);
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}
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static bool pqi_vpd_page_supported(struct pqi_ctrl_info *ctrl_info,
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u8 *scsi3addr, u16 vpd_page)
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{
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int rc;
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int i;
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int pages;
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unsigned char *buf, bufsize;
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buf = kzalloc(256, GFP_KERNEL);
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if (!buf)
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return false;
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/* Get the size of the page list first */
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rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
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VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES,
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buf, SCSI_VPD_HEADER_SZ);
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if (rc != 0)
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goto exit_unsupported;
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pages = buf[3];
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if ((pages + SCSI_VPD_HEADER_SZ) <= 255)
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bufsize = pages + SCSI_VPD_HEADER_SZ;
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else
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bufsize = 255;
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/* Get the whole VPD page list */
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rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
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VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES,
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buf, bufsize);
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if (rc != 0)
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goto exit_unsupported;
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pages = buf[3];
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for (i = 1; i <= pages; i++)
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if (buf[3 + i] == vpd_page)
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goto exit_supported;
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exit_unsupported:
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kfree(buf);
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return false;
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exit_supported:
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kfree(buf);
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return true;
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}
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static int pqi_get_device_id(struct pqi_ctrl_info *ctrl_info,
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u8 *scsi3addr, u8 *device_id, int buflen)
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{
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int rc;
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unsigned char *buf;
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if (!pqi_vpd_page_supported(ctrl_info, scsi3addr, SCSI_VPD_DEVICE_ID))
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return 1; /* function not supported */
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buf = kzalloc(64, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
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VPD_PAGE | SCSI_VPD_DEVICE_ID,
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buf, 64);
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if (rc == 0) {
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if (buflen > 16)
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buflen = 16;
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memcpy(device_id, &buf[SCSI_VPD_DEVICE_ID_IDX], buflen);
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}
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kfree(buf);
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return rc;
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}
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static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
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struct pqi_scsi_dev *device,
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struct bmic_identify_physical_device *buffer,
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@ -1244,6 +1317,14 @@ static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
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}
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}
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if (pqi_get_device_id(ctrl_info, device->scsi3addr,
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device->unique_id, sizeof(device->unique_id)) < 0)
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dev_warn(&ctrl_info->pci_dev->dev,
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"Can't get device id for scsi %d:%d:%d:%d\n",
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ctrl_info->scsi_host->host_no,
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device->bus, device->target,
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device->lun);
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out:
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kfree(buffer);
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@ -1775,6 +1856,12 @@ static inline bool pqi_skip_device(u8 *scsi3addr)
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return false;
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}
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static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
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{
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return !device->is_physical_device ||
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!pqi_skip_device(device->scsi3addr);
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}
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static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
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{
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int i;
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@ -5722,6 +5809,145 @@ static struct device_attribute *pqi_shost_attrs[] = {
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NULL
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};
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static ssize_t pqi_unique_id_show(struct device *dev,
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struct device_attribute *attr, char *buffer)
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{
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struct pqi_ctrl_info *ctrl_info;
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struct scsi_device *sdev;
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struct pqi_scsi_dev *device;
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unsigned long flags;
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unsigned char uid[16];
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sdev = to_scsi_device(dev);
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ctrl_info = shost_to_hba(sdev->host);
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spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
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flags);
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return -ENODEV;
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}
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memcpy(uid, device->unique_id, sizeof(uid));
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return snprintf(buffer, PAGE_SIZE, "%16phN", uid);
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}
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static ssize_t pqi_lunid_show(struct device *dev,
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struct device_attribute *attr, char *buffer)
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{
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struct pqi_ctrl_info *ctrl_info;
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struct scsi_device *sdev;
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struct pqi_scsi_dev *device;
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unsigned long flags;
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u8 lunid[8];
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sdev = to_scsi_device(dev);
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ctrl_info = shost_to_hba(sdev->host);
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spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
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flags);
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return -ENODEV;
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}
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memcpy(lunid, device->scsi3addr, sizeof(lunid));
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
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}
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#define MAX_PATHS 8
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static ssize_t pqi_path_info_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct pqi_ctrl_info *ctrl_info;
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struct scsi_device *sdev;
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struct pqi_scsi_dev *device;
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unsigned long flags;
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int i;
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int output_len = 0;
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u8 box;
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u8 bay;
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u8 path_map_index = 0;
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char *active;
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unsigned char phys_connector[2];
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sdev = to_scsi_device(dev);
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ctrl_info = shost_to_hba(sdev->host);
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spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
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device = sdev->hostdata;
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if (!device) {
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
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flags);
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return -ENODEV;
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}
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bay = device->bay;
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for (i = 0; i < MAX_PATHS; i++) {
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path_map_index = 1<<i;
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if (i == device->active_path_index)
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active = "Active";
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else if (device->path_map & path_map_index)
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active = "Inactive";
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else
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continue;
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output_len += scnprintf(buf + output_len,
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PAGE_SIZE - output_len,
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"[%d:%d:%d:%d] %20.20s ",
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ctrl_info->scsi_host->host_no,
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device->bus, device->target,
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device->lun,
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scsi_device_type(device->devtype));
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if (device->devtype == TYPE_RAID ||
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pqi_is_logical_device(device))
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goto end_buffer;
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memcpy(&phys_connector, &device->phys_connector[i],
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sizeof(phys_connector));
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if (phys_connector[0] < '0')
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phys_connector[0] = '0';
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if (phys_connector[1] < '0')
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phys_connector[1] = '0';
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output_len += scnprintf(buf + output_len,
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PAGE_SIZE - output_len,
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"PORT: %.2s ", phys_connector);
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box = device->box[i];
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if (box != 0 && box != 0xFF)
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output_len += scnprintf(buf + output_len,
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PAGE_SIZE - output_len,
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"BOX: %hhu ", box);
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if ((device->devtype == TYPE_DISK ||
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device->devtype == TYPE_ZBC) &&
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pqi_expose_device(device))
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output_len += scnprintf(buf + output_len,
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PAGE_SIZE - output_len,
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"BAY: %hhu ", bay);
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end_buffer:
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output_len += scnprintf(buf + output_len,
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PAGE_SIZE - output_len,
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"%s\n", active);
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}
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spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
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return output_len;
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}
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static ssize_t pqi_sas_address_show(struct device *dev,
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struct device_attribute *attr, char *buffer)
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{
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@ -5798,12 +6024,18 @@ static ssize_t pqi_raid_level_show(struct device *dev,
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return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
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}
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static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
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static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
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static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
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static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
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static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
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pqi_ssd_smart_path_enabled_show, NULL);
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static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
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static struct device_attribute *pqi_sdev_attrs[] = {
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&dev_attr_lunid,
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&dev_attr_unique_id,
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&dev_attr_path_info,
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&dev_attr_sas_address,
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&dev_attr_ssd_smart_path_enabled,
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&dev_attr_raid_level,
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