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[SCSI] mpt fusion: Queue full event handling

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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>
This commit is contained in:
Kashyap, Desai 2009-05-29 16:55:09 +05:30 committed by James Bottomley
parent a7938b0bb3
commit 57e985136b
2 changed files with 139 additions and 0 deletions
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133
drivers/message/fusion/mptsas.c
View File

@ -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)
{

6
drivers/message/fusion/mptsas.h
View File

@ -83,6 +83,12 @@ struct mptsas_device_info {
u16 slot; /* enclosure slot id */
u64 enclosure_logical_id; /*enclosure address */
u8 is_logical_volume; /* is this logical volume */
/* this belongs to volume */
u8 is_hidden_raid_component;
/* this valid when is_hidden_raid_component set */
u8 volume_id;
/* cached data for a removed device */
u8 is_cached;
};
struct mptsas_hotplug_event {