From 57e985136bfafdfcd72c4c7d91115955d225677e Mon Sep 17 00:00:00 2001 From: "Kashyap, Desai" Date: Fri, 29 May 2009 16:55:09 +0530 Subject: [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 Signed-off-by: James Bottomley --- drivers/message/fusion/mptsas.c | 133 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) (limited to 'drivers/message/fusion/mptsas.c') diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c index 72158237f5e8..10a12d846e85 100644 --- a/drivers/message/fusion/mptsas.c +++ b/drivers/message/fusion/mptsas.c @@ -121,6 +121,7 @@ static void mptsas_expander_delete(MPT_ADAPTER *ioc, static void mptsas_send_expander_event(struct fw_event_work *fw_event); static void mptsas_not_responding_devices(MPT_ADAPTER *ioc); static void mptsas_scan_sas_topology(MPT_ADAPTER *ioc); +static void mptsas_handle_queue_full_event(struct fw_event_work *fw_event); static void mptsas_volume_delete(MPT_ADAPTER *ioc, u8 id); static void mptsas_print_phy_data(MPT_ADAPTER *ioc, @@ -680,6 +681,18 @@ mptsas_add_device_component_starget_ir(MPT_ADAPTER *ioc, mptsas_add_device_component_by_fw(ioc, phys_disk.PhysDiskBus, phys_disk.PhysDiskID); + mutex_lock(&ioc->sas_device_info_mutex); + list_for_each_entry(sas_info, &ioc->sas_device_info_list, + list) { + if (!sas_info->is_logical_volume && + (sas_info->fw.channel == phys_disk.PhysDiskBus && + sas_info->fw.id == phys_disk.PhysDiskID)) { + sas_info->is_hidden_raid_component = 1; + sas_info->volume_id = starget->id; + } + } + mutex_unlock(&ioc->sas_device_info_mutex); + } /* @@ -746,6 +759,29 @@ mptsas_add_device_component_starget(MPT_ADAPTER *ioc, phy_info->attached.slot, enclosure_info.enclosure_logical_id); } +/** + * mptsas_del_device_component_by_os - Once a device has been removed, we + * mark the entry in the list as being cached + * @ioc: Pointer to MPT_ADAPTER structure + * @channel: os mapped id's + * @id: + * + **/ +static void +mptsas_del_device_component_by_os(MPT_ADAPTER *ioc, u8 channel, u8 id) +{ + struct mptsas_device_info *sas_info, *next; + + /* + * Set is_cached flag + */ + list_for_each_entry_safe(sas_info, next, &ioc->sas_device_info_list, + list) { + if (sas_info->os.channel == channel && sas_info->os.id == id) + sas_info->is_cached = 1; + } +} + /** * mptsas_del_device_components - Cleaning the list * @ioc: Pointer to MPT_ADAPTER structure @@ -1576,6 +1612,9 @@ mptsas_firmware_event_work(struct work_struct *work) case MPI_EVENT_SAS_PHY_LINK_STATUS: mptsas_send_link_status_event(fw_event); break; + case MPI_EVENT_QUEUE_FULL: + mptsas_handle_queue_full_event(fw_event); + break; } } @@ -1705,6 +1744,9 @@ mptsas_target_destroy(struct scsi_target *starget) vtarget = starget->hostdata; + mptsas_del_device_component_by_os(ioc, starget->channel, + starget->id); + if (starget->channel == MPTSAS_RAID_CHANNEL) goto out; @@ -3398,6 +3440,8 @@ mptsas_not_responding_devices(MPT_ADAPTER *ioc) mutex_lock(&ioc->sas_device_info_mutex); redo_device_scan: list_for_each_entry(sas_info, &ioc->sas_device_info_list, list) { + if (sas_info->is_cached) + continue; if (!sas_info->is_logical_volume) { sas_device.handle = 0; retry_count = 0; @@ -3612,6 +3656,95 @@ mptsas_scan_sas_topology(MPT_ADAPTER *ioc) } } + +static void +mptsas_handle_queue_full_event(struct fw_event_work *fw_event) +{ + MPT_ADAPTER *ioc; + EventDataQueueFull_t *qfull_data; + struct mptsas_device_info *sas_info; + struct scsi_device *sdev; + int depth; + int id = -1; + int channel = -1; + int fw_id, fw_channel; + u16 current_depth; + + + ioc = fw_event->ioc; + qfull_data = (EventDataQueueFull_t *)fw_event->event_data; + fw_id = qfull_data->TargetID; + fw_channel = qfull_data->Bus; + current_depth = le16_to_cpu(qfull_data->CurrentDepth); + + /* if hidden raid component, look for the volume id */ + mutex_lock(&ioc->sas_device_info_mutex); + if (mptscsih_is_phys_disk(ioc, fw_channel, fw_id)) { + list_for_each_entry(sas_info, &ioc->sas_device_info_list, + list) { + if (sas_info->is_cached || + sas_info->is_logical_volume) + continue; + if (sas_info->is_hidden_raid_component && + (sas_info->fw.channel == fw_channel && + sas_info->fw.id == fw_id)) { + id = sas_info->volume_id; + channel = MPTSAS_RAID_CHANNEL; + goto out; + } + } + } else { + list_for_each_entry(sas_info, &ioc->sas_device_info_list, + list) { + if (sas_info->is_cached || + sas_info->is_hidden_raid_component || + sas_info->is_logical_volume) + continue; + if (sas_info->fw.channel == fw_channel && + sas_info->fw.id == fw_id) { + id = sas_info->os.id; + channel = sas_info->os.channel; + goto out; + } + } + + } + + out: + mutex_unlock(&ioc->sas_device_info_mutex); + + if (id != -1) { + shost_for_each_device(sdev, ioc->sh) { + if (sdev->id == id && sdev->channel == channel) { + if (current_depth > sdev->queue_depth) { + sdev_printk(KERN_INFO, sdev, + "strange observation, the queue " + "depth is (%d) meanwhile fw queue " + "depth (%d)\n", sdev->queue_depth, + current_depth); + continue; + } + depth = scsi_track_queue_full(sdev, + current_depth - 1); + if (depth > 0) + sdev_printk(KERN_INFO, sdev, + "Queue depth reduced to (%d)\n", + depth); + else if (depth < 0) + sdev_printk(KERN_INFO, sdev, + "Tagged Command Queueing is being " + "disabled\n"); + else if (depth == 0) + sdev_printk(KERN_INFO, sdev, + "Queue depth not changed yet\n"); + } + } + } + + mptsas_free_fw_event(ioc, fw_event); +} + + static struct mptsas_phyinfo * mptsas_find_phyinfo_by_sas_address(MPT_ADAPTER *ioc, u64 sas_address) { -- cgit v1.2.3