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[SCSI] mpt fusion: Firmware event implementation using seperate WorkQueue 

Now Firmware events are handled by firmware event queue.
Previously it was handled in interrupt context/WorkQueue of Linux.
Firmware Event handling is restructured and optimized.

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 16:47:26 +05:30 committed by James Bottomley
parent ea2a788de4
commit 3eb0822c67
4 changed files with 992 additions and 454 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/message/fusion/mptbase.c
View File

@ -1931,6 +1931,11 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
*/
mpt_detect_bound_ports(ioc, pdev);
INIT_LIST_HEAD(&ioc->fw_event_list);
spin_lock_init(&ioc->fw_event_lock);
snprintf(ioc->fw_event_q_name, 20, "mpt/%d", ioc->id);
ioc->fw_event_q = create_singlethread_workqueue(ioc->fw_event_q_name);
if ((r = mpt_do_ioc_recovery(ioc, MPT_HOSTEVENT_IOC_BRINGUP,
CAN_SLEEP)) != 0){
printk(MYIOC_s_ERR_FMT "didn't initialize properly! (%d)\n",
@ -2010,6 +2015,11 @@ mpt_detach(struct pci_dev *pdev)
cancel_delayed_work(&ioc->fault_reset_work);
destroy_workqueue(wq);
spin_lock_irqsave(&ioc->fw_event_lock, flags);
wq = ioc->fw_event_q;
ioc->fw_event_q = NULL;
spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
destroy_workqueue(wq);
sprintf(pname, MPT_PROCFS_MPTBASEDIR "/%s/summary", ioc->name);
remove_proc_entry(pname, NULL);

9
drivers/message/fusion/mptbase.h
View File

@ -694,9 +694,18 @@ typedef struct _MPT_ADAPTER
struct net_device *netdev;
struct list_head sas_topology;
struct mutex sas_topology_mutex;
struct workqueue_struct *fw_event_q;
struct list_head fw_event_list;
spinlock_t fw_event_lock;
u8 fw_events_off; /* if '1', then ignore events */
char fw_event_q_name[20];
struct mutex sas_discovery_mutex;
u8 sas_discovery_runtime;
u8 sas_discovery_ignore_events;
struct list_head sas_device_info_list;
struct mutex sas_device_info_mutex;
u8 sas_discovery_quiesce_io;
int sas_index; /* index refrencing */
MPT_MGMT sas_mgmt;

1394
drivers/message/fusion/mptsas.c
View File

File diff suppressed because it is too large Load Diff

33
drivers/message/fusion/mptsas.h
View File

@ -61,12 +61,30 @@ enum mptsas_hotplug_action {
MPTSAS_DEL_DEVICE,
MPTSAS_ADD_RAID,
MPTSAS_DEL_RAID,
MPTSAS_ADD_PHYSDISK,
MPTSAS_ADD_PHYSDISK_REPROBE,
MPTSAS_DEL_PHYSDISK,
MPTSAS_DEL_PHYSDISK_REPROBE,
MPTSAS_ADD_INACTIVE_VOLUME,
MPTSAS_IGNORE_EVENT,
};
struct mptsas_mapping{
u8 id;
u8 channel;
};
struct mptsas_device_info {
struct list_head list;
struct mptsas_mapping os; /* operating system mapping*/
struct mptsas_mapping fw; /* firmware mapping */
u64 sas_address;
u32 device_info; /* specific bits for devices */
u16 slot; /* enclosure slot id */
u64 enclosure_logical_id; /*enclosure address */
};
struct mptsas_hotplug_event {
struct work_struct work;
MPT_ADAPTER *ioc;
enum mptsas_hotplug_action event_type;
u64 sas_address;
@ -74,11 +92,18 @@ struct mptsas_hotplug_event {
u8 id;
u32 device_info;
u16 handle;
u16 parent_handle;
u8 phy_id;
u8 phys_disk_num_valid; /* hrc (hidden raid component) */
u8 phys_disk_num; /* hrc - unique index*/
u8 hidden_raid_component; /* hrc - don't expose*/
struct scsi_device *sdev;
};
struct fw_event_work {
struct list_head list;
struct delayed_work work;
MPT_ADAPTER *ioc;
u32 event;
u8 retries;
u8 event_data[1];
};
struct mptsas_discovery_event {