On 18.7.2015 18:12, Don Brace wrote:
> From: Joe Handzik <joseph.t.hand...@hp.com>
>
> host no, bus, target, lun, scsi_device_type
> for hba mode add: box and bay information
>
> report if the path is active/inactive
>
> Reviewed-by: Kevin Barnett <kevin.barn...@pmcs.com>
> Reviewed-by: Scott Teel <scott.t...@pmcs.com>
> Signed-off-by: Don Brace <don.br...@pmcs.com>
Reviewed-by: Tomas Henzl <the...@redhat.com>
Tomas
> ---
> drivers/scsi/hpsa.c | 122
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> drivers/scsi/hpsa.h | 5 ++
> 2 files changed, 127 insertions(+)
>
> diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
> index eaa35bd..f64a2c7 100644
> --- a/drivers/scsi/hpsa.c
> +++ b/drivers/scsi/hpsa.c
> @@ -264,6 +264,7 @@ static int hpsa_scsi_ioaccel_queue_command(struct
> ctlr_info *h,
> static void hpsa_command_resubmit_worker(struct work_struct *work);
> static u32 lockup_detected(struct ctlr_info *h);
> static int detect_controller_lockup(struct ctlr_info *h);
> +static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t
> *device);
>
> static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
> {
> @@ -714,12 +715,106 @@ static ssize_t
> host_show_hp_ssd_smart_path_enabled(struct device *dev,
> return snprintf(buf, 20, "%d\n", offload_enabled);
> }
>
> +#define MAX_PATHS 8
> +#define PATH_STRING_LEN 50
> +
> +static ssize_t path_info_show(struct device *dev,
> + struct device_attribute *attr, char *buf)
> +{
> + struct ctlr_info *h;
> + struct scsi_device *sdev;
> + struct hpsa_scsi_dev_t *hdev;
> + unsigned long flags;
> + int i;
> + int output_len = 0;
> + u8 box;
> + u8 bay;
> + u8 path_map_index = 0;
> + char *active;
> + unsigned char phys_connector[2];
> + unsigned char path[MAX_PATHS][PATH_STRING_LEN];
> +
> + memset(path, 0, MAX_PATHS * PATH_STRING_LEN);
> + sdev = to_scsi_device(dev);
> + h = sdev_to_hba(sdev);
> + spin_lock_irqsave(&h->devlock, flags);
> + hdev = sdev->hostdata;
> + if (!hdev) {
> + spin_unlock_irqrestore(&h->devlock, flags);
> + return -ENODEV;
> + }
> +
> + bay = hdev->bay;
> + for (i = 0; i < MAX_PATHS; i++) {
> + path_map_index = 1<<i;
> + if (i == hdev->active_path_index)
> + active = "Active";
> + else if (hdev->path_map & path_map_index)
> + active = "Inactive";
> + else
> + continue;
> +
> + output_len = snprintf(path[i],
> + PATH_STRING_LEN, "[%d:%d:%d:%d] %20.20s ",
> + h->scsi_host->host_no,
> + hdev->bus, hdev->target, hdev->lun,
> + scsi_device_type(hdev->devtype));
> +
> + if (is_ext_target(h, hdev) ||
> + (hdev->devtype == TYPE_RAID) ||
> + is_logical_dev_addr_mode(hdev->scsi3addr)) {
> + output_len += snprintf(path[i] + output_len,
> + PATH_STRING_LEN, "%s\n",
> + active);
> + continue;
> + }
> +
> + box = hdev->box[i];
> + memcpy(&phys_connector, &hdev->phys_connector[i],
> + sizeof(phys_connector));
> + if (phys_connector[0] < '0')
> + phys_connector[0] = '0';
> + if (phys_connector[1] < '0')
> + phys_connector[1] = '0';
> + if (hdev->phys_connector[i] > 0)
> + output_len += snprintf(path[i] + output_len,
> + PATH_STRING_LEN,
> + "PORT: %.2s ",
> + phys_connector);
> + if (hdev->devtype == TYPE_DISK && h->hba_mode_enabled) {
> + if (box == 0 || box == 0xFF) {
> + output_len += snprintf(path[i] + output_len,
> + PATH_STRING_LEN,
> + "BAY: %hhu %s\n",
> + bay, active);
> + } else {
> + output_len += snprintf(path[i] + output_len,
> + PATH_STRING_LEN,
> + "BOX: %hhu BAY: %hhu %s\n",
> + box, bay, active);
> + }
> + } else if (box != 0 && box != 0xFF) {
> + output_len += snprintf(path[i] + output_len,
> + PATH_STRING_LEN, "BOX: %hhu %s\n",
> + box, active);
> + } else
> + output_len += snprintf(path[i] + output_len,
> + PATH_STRING_LEN, "%s\n", active);
> + }
> +
> + spin_unlock_irqrestore(&h->devlock, flags);
> + return snprintf(buf, output_len+1, "%s%s%s%s%s%s%s%s",
> + path[0], path[1], path[2], path[3],
> + path[4], path[5], path[6], path[7]);
> +}
> +
> static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
> static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
> static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
> static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
> static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
> host_show_hp_ssd_smart_path_enabled, NULL);
> +static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
> static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
> host_show_hp_ssd_smart_path_status,
> host_store_hp_ssd_smart_path_status);
> @@ -741,6 +836,7 @@ static struct device_attribute *hpsa_sdev_attrs[] = {
> &dev_attr_lunid,
> &dev_attr_unique_id,
> &dev_attr_hp_ssd_smart_path_enabled,
> + &dev_attr_path_info,
> &dev_attr_lockup_detected,
> NULL,
> };
> @@ -3611,6 +3707,31 @@ static void hpsa_get_ioaccel_drive_info(struct
> ctlr_info *h,
> atomic_set(&dev->reset_cmds_out, 0);
> }
>
> +static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
> + u8 *lunaddrbytes,
> + struct bmic_identify_physical_device *id_phys)
> +{
> + if (PHYS_IOACCEL(lunaddrbytes)
> + && this_device->ioaccel_handle)
> + this_device->hba_ioaccel_enabled = 1;
> +
> + memcpy(&this_device->active_path_index,
> + &id_phys->active_path_number,
> + sizeof(this_device->active_path_index));
> + memcpy(&this_device->path_map,
> + &id_phys->redundant_path_present_map,
> + sizeof(this_device->path_map));
> + memcpy(&this_device->box,
> + &id_phys->alternate_paths_phys_box_on_port,
> + sizeof(this_device->box));
> + memcpy(&this_device->phys_connector,
> + &id_phys->alternate_paths_phys_connector,
> + sizeof(this_device->phys_connector));
> + memcpy(&this_device->bay,
> + &id_phys->phys_bay_in_box,
> + sizeof(this_device->bay));
> +}
> +
> static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
> {
> /* the idea here is we could get notified
> @@ -3771,6 +3892,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info
> *h, int hostno)
>
> hpsa_get_ioaccel_drive_info(h, this_device,
> lunaddrbytes, id_phys);
> + hpsa_get_path_info(this_device, lunaddrbytes, id_phys);
> atomic_set(&this_device->ioaccel_cmds_out, 0);
> ncurrent++;
> break;
> diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
> index 6f6084b..ab014d3 100644
> --- a/drivers/scsi/hpsa.h
> +++ b/drivers/scsi/hpsa.h
> @@ -50,6 +50,11 @@ struct hpsa_scsi_dev_t {
> * device via "ioaccel" path.
> */
> u32 ioaccel_handle;
> + u8 active_path_index;
> + u8 path_map;
> + u8 bay;
> + u8 box[8];
> + u16 phys_connector[8];
> int offload_config; /* I/O accel RAID offload configured */
> int offload_enabled; /* I/O accel RAID offload enabled */
> int offload_to_be_enabled;
>
> --
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