[SCSI] qla4xxx: added support for host event
Added support to post kernel host event to application using netlink interface. Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>hifive-unleashed-5.1
Vikas Chaudhary
James Bottomley
parent
a11e254595
commit
ff88443080
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@ -301,7 +301,21 @@ struct ql4_tuple_ddb {
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#define DF_ISNS_DISCOVERED 2 /* Device was discovered via iSNS */
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#define DF_FO_MASKED 3
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enum qla4_work_type {
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QLA4_EVENT_AEN,
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};
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struct qla4_work_evt {
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struct list_head list;
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enum qla4_work_type type;
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union {
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struct {
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enum iscsi_host_event_code code;
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uint32_t data_size;
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uint8_t data[0];
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} aen;
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} u;
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};
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struct ql82xx_hw_data {
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/* Offsets for flash/nvram access (set to ~0 if not used). */
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@ -672,6 +686,10 @@ struct scsi_qla_host {
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uint16_t sec_ddb_idx;
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int is_reset;
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uint16_t temperature;
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/* event work list */
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struct list_head work_list;
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spinlock_t work_lock;
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};
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struct ql4_task_data {
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@ -181,6 +181,8 @@ int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
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int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
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struct ddb_entry *ddb_entry, uint32_t state);
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void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset);
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int qla4xxx_post_aen_work(struct scsi_qla_host *ha, uint32_t aen_code,
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uint32_t data_size, uint8_t *data);
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/* BSG Functions */
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int qla4xxx_bsg_request(struct bsg_job *bsg_job);
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@ -576,6 +576,9 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
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set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
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ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__);
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qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKUP,
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sizeof(mbox_sts),
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(uint8_t *) mbox_sts);
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break;
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case MBOX_ASTS_LINK_DOWN:
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@ -584,6 +587,9 @@ static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
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set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
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ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__);
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qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKDOWN,
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sizeof(mbox_sts),
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(uint8_t *) mbox_sts);
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break;
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case MBOX_ASTS_HEARTBEAT:
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@ -2282,6 +2282,10 @@ static void qla4xxx_timer(struct scsi_qla_host *ha)
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}
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}
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/* Process any deferred work. */
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if (!list_empty(&ha->work_list))
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start_dpc++;
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/* Wakeup the dpc routine for this adapter, if needed. */
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if (start_dpc ||
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test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
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@ -2847,6 +2851,81 @@ void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
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queue_work(ha->dpc_thread, &ha->dpc_work);
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}
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static struct qla4_work_evt *
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qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
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enum qla4_work_type type)
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{
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struct qla4_work_evt *e;
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uint32_t size = sizeof(struct qla4_work_evt) + data_size;
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e = kzalloc(size, GFP_ATOMIC);
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if (!e)
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return NULL;
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INIT_LIST_HEAD(&e->list);
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e->type = type;
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return e;
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}
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static void qla4xxx_post_work(struct scsi_qla_host *ha,
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struct qla4_work_evt *e)
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{
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unsigned long flags;
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spin_lock_irqsave(&ha->work_lock, flags);
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list_add_tail(&e->list, &ha->work_list);
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spin_unlock_irqrestore(&ha->work_lock, flags);
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qla4xxx_wake_dpc(ha);
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}
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int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
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enum iscsi_host_event_code aen_code,
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uint32_t data_size, uint8_t *data)
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{
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struct qla4_work_evt *e;
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e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
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if (!e)
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return QLA_ERROR;
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e->u.aen.code = aen_code;
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e->u.aen.data_size = data_size;
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memcpy(e->u.aen.data, data, data_size);
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qla4xxx_post_work(ha, e);
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return QLA_SUCCESS;
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}
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void qla4xxx_do_work(struct scsi_qla_host *ha)
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{
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struct qla4_work_evt *e, *tmp;
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unsigned long flags;
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LIST_HEAD(work);
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spin_lock_irqsave(&ha->work_lock, flags);
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list_splice_init(&ha->work_list, &work);
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spin_unlock_irqrestore(&ha->work_lock, flags);
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list_for_each_entry_safe(e, tmp, &work, list) {
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list_del_init(&e->list);
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switch (e->type) {
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case QLA4_EVENT_AEN:
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iscsi_post_host_event(ha->host_no,
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&qla4xxx_iscsi_transport,
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e->u.aen.code,
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e->u.aen.data_size,
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e->u.aen.data);
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break;
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default:
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ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
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"supported", e->type);
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}
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kfree(e);
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}
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}
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/**
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* qla4xxx_do_dpc - dpc routine
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* @data: in our case pointer to adapter structure
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@ -2878,6 +2957,9 @@ static void qla4xxx_do_dpc(struct work_struct *work)
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return;
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}
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/* post events to application */
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qla4xxx_do_work(ha);
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if (is_qla8022(ha)) {
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if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
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qla4_8xxx_idc_lock(ha);
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@ -4450,6 +4532,9 @@ static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
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spin_lock_init(&ha->hardware_lock);
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/* Initialize work list */
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INIT_LIST_HEAD(&ha->work_list);
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/* Allocate dma buffers */
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if (qla4xxx_mem_alloc(ha)) {
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ql4_printk(KERN_WARNING, ha,
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