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[SCSI] mpt fusion: Queue full event handling
FW will report Queue full event to Driver and driver will handle this queue full event to SCSI Mid layer. Signed-off-by: Kashyap Desai <kadesai@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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parent
a7938b0bb3
commit
57e985136b
2 changed files with 139 additions and 0 deletions
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@ -121,6 +121,7 @@ static void mptsas_expander_delete(MPT_ADAPTER *ioc,
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static void mptsas_send_expander_event(struct fw_event_work *fw_event);
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static void mptsas_not_responding_devices(MPT_ADAPTER *ioc);
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static void mptsas_scan_sas_topology(MPT_ADAPTER *ioc);
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static void mptsas_handle_queue_full_event(struct fw_event_work *fw_event);
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static void mptsas_volume_delete(MPT_ADAPTER *ioc, u8 id);
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static void mptsas_print_phy_data(MPT_ADAPTER *ioc,
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@ -680,6 +681,18 @@ mptsas_add_device_component_starget_ir(MPT_ADAPTER *ioc,
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mptsas_add_device_component_by_fw(ioc, phys_disk.PhysDiskBus,
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phys_disk.PhysDiskID);
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mutex_lock(&ioc->sas_device_info_mutex);
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list_for_each_entry(sas_info, &ioc->sas_device_info_list,
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list) {
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if (!sas_info->is_logical_volume &&
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(sas_info->fw.channel == phys_disk.PhysDiskBus &&
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sas_info->fw.id == phys_disk.PhysDiskID)) {
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sas_info->is_hidden_raid_component = 1;
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sas_info->volume_id = starget->id;
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}
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}
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mutex_unlock(&ioc->sas_device_info_mutex);
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}
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/*
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@ -746,6 +759,29 @@ mptsas_add_device_component_starget(MPT_ADAPTER *ioc,
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phy_info->attached.slot, enclosure_info.enclosure_logical_id);
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}
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/**
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* mptsas_del_device_component_by_os - Once a device has been removed, we
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* mark the entry in the list as being cached
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* @ioc: Pointer to MPT_ADAPTER structure
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* @channel: os mapped id's
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* @id:
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*
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**/
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static void
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mptsas_del_device_component_by_os(MPT_ADAPTER *ioc, u8 channel, u8 id)
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{
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struct mptsas_device_info *sas_info, *next;
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/*
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* Set is_cached flag
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*/
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list_for_each_entry_safe(sas_info, next, &ioc->sas_device_info_list,
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list) {
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if (sas_info->os.channel == channel && sas_info->os.id == id)
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sas_info->is_cached = 1;
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}
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}
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/**
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* mptsas_del_device_components - Cleaning the list
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* @ioc: Pointer to MPT_ADAPTER structure
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@ -1576,6 +1612,9 @@ mptsas_firmware_event_work(struct work_struct *work)
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case MPI_EVENT_SAS_PHY_LINK_STATUS:
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mptsas_send_link_status_event(fw_event);
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break;
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case MPI_EVENT_QUEUE_FULL:
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mptsas_handle_queue_full_event(fw_event);
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break;
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}
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}
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@ -1705,6 +1744,9 @@ mptsas_target_destroy(struct scsi_target *starget)
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vtarget = starget->hostdata;
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mptsas_del_device_component_by_os(ioc, starget->channel,
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starget->id);
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if (starget->channel == MPTSAS_RAID_CHANNEL)
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goto out;
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@ -3398,6 +3440,8 @@ mptsas_not_responding_devices(MPT_ADAPTER *ioc)
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mutex_lock(&ioc->sas_device_info_mutex);
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redo_device_scan:
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list_for_each_entry(sas_info, &ioc->sas_device_info_list, list) {
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if (sas_info->is_cached)
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continue;
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if (!sas_info->is_logical_volume) {
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sas_device.handle = 0;
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retry_count = 0;
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@ -3612,6 +3656,95 @@ mptsas_scan_sas_topology(MPT_ADAPTER *ioc)
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}
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}
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static void
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mptsas_handle_queue_full_event(struct fw_event_work *fw_event)
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{
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MPT_ADAPTER *ioc;
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EventDataQueueFull_t *qfull_data;
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struct mptsas_device_info *sas_info;
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struct scsi_device *sdev;
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int depth;
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int id = -1;
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int channel = -1;
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int fw_id, fw_channel;
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u16 current_depth;
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ioc = fw_event->ioc;
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qfull_data = (EventDataQueueFull_t *)fw_event->event_data;
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fw_id = qfull_data->TargetID;
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fw_channel = qfull_data->Bus;
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current_depth = le16_to_cpu(qfull_data->CurrentDepth);
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/* if hidden raid component, look for the volume id */
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mutex_lock(&ioc->sas_device_info_mutex);
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if (mptscsih_is_phys_disk(ioc, fw_channel, fw_id)) {
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list_for_each_entry(sas_info, &ioc->sas_device_info_list,
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list) {
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if (sas_info->is_cached ||
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sas_info->is_logical_volume)
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continue;
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if (sas_info->is_hidden_raid_component &&
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(sas_info->fw.channel == fw_channel &&
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sas_info->fw.id == fw_id)) {
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id = sas_info->volume_id;
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channel = MPTSAS_RAID_CHANNEL;
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goto out;
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}
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}
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} else {
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list_for_each_entry(sas_info, &ioc->sas_device_info_list,
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list) {
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if (sas_info->is_cached ||
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sas_info->is_hidden_raid_component ||
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sas_info->is_logical_volume)
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continue;
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if (sas_info->fw.channel == fw_channel &&
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sas_info->fw.id == fw_id) {
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id = sas_info->os.id;
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channel = sas_info->os.channel;
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goto out;
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}
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}
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}
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out:
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mutex_unlock(&ioc->sas_device_info_mutex);
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if (id != -1) {
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shost_for_each_device(sdev, ioc->sh) {
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if (sdev->id == id && sdev->channel == channel) {
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if (current_depth > sdev->queue_depth) {
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sdev_printk(KERN_INFO, sdev,
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"strange observation, the queue "
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"depth is (%d) meanwhile fw queue "
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"depth (%d)\n", sdev->queue_depth,
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current_depth);
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continue;
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}
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depth = scsi_track_queue_full(sdev,
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current_depth - 1);
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if (depth > 0)
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sdev_printk(KERN_INFO, sdev,
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"Queue depth reduced to (%d)\n",
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depth);
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else if (depth < 0)
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sdev_printk(KERN_INFO, sdev,
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"Tagged Command Queueing is being "
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"disabled\n");
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else if (depth == 0)
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sdev_printk(KERN_INFO, sdev,
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"Queue depth not changed yet\n");
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}
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}
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}
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mptsas_free_fw_event(ioc, fw_event);
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}
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static struct mptsas_phyinfo *
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mptsas_find_phyinfo_by_sas_address(MPT_ADAPTER *ioc, u64 sas_address)
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{
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@ -83,6 +83,12 @@ struct mptsas_device_info {
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u16 slot; /* enclosure slot id */
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u64 enclosure_logical_id; /*enclosure address */
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u8 is_logical_volume; /* is this logical volume */
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/* this belongs to volume */
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u8 is_hidden_raid_component;
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/* this valid when is_hidden_raid_component set */
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u8 volume_id;
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/* cached data for a removed device */
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u8 is_cached;
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};
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struct mptsas_hotplug_event {
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