return "unknown";
}
+static struct edb_node *qla_edb_getnext(scsi_qla_host_t *vha)
+{
+ unsigned long flags;
+ struct edb_node *edbnode = NULL;
+
+ spin_lock_irqsave(&vha->e_dbell.db_lock, flags);
+
+ /* db nodes are fifo - no qualifications done */
+ if (!list_empty(&vha->e_dbell.head)) {
+ edbnode = list_first_entry(&vha->e_dbell.head,
+ struct edb_node, list);
+ list_del_init(&edbnode->list);
+ }
+
+ spin_unlock_irqrestore(&vha->e_dbell.db_lock, flags);
+
+ return edbnode;
+}
+
+static void qla_edb_node_free(scsi_qla_host_t *vha, struct edb_node *node)
+{
+ list_del_init(&node->list);
+ kfree(node);
+}
+
static struct edif_list_entry *qla_edif_list_find_sa_index(fc_port_t *fcport,
uint16_t handle)
{
return 0;
}
+static int qla_edif_consume_dbell(scsi_qla_host_t *vha, struct bsg_job *bsg_job)
+{
+ struct fc_bsg_reply *bsg_reply = bsg_job->reply;
+ u32 sg_skip, reply_payload_len;
+ bool keep;
+ struct edb_node *dbnode = NULL;
+ struct edif_app_dbell ap;
+ int dat_size = 0;
+
+ sg_skip = 0;
+ reply_payload_len = bsg_job->reply_payload.payload_len;
+
+ while ((reply_payload_len - sg_skip) >= sizeof(struct edb_node)) {
+ dbnode = qla_edb_getnext(vha);
+ if (dbnode) {
+ keep = true;
+ dat_size = 0;
+ ap.event_code = dbnode->ntype;
+ switch (dbnode->ntype) {
+ case VND_CMD_AUTH_STATE_SESSION_SHUTDOWN:
+ case VND_CMD_AUTH_STATE_NEEDED:
+ ap.port_id = dbnode->u.plogi_did;
+ dat_size += sizeof(ap.port_id);
+ break;
+ case VND_CMD_AUTH_STATE_ELS_RCVD:
+ ap.port_id = dbnode->u.els_sid;
+ dat_size += sizeof(ap.port_id);
+ break;
+ case VND_CMD_AUTH_STATE_SAUPDATE_COMPL:
+ ap.port_id = dbnode->u.sa_aen.port_id;
+ memcpy(&ap.event_data, &dbnode->u,
+ sizeof(struct edif_sa_update_aen));
+ dat_size += sizeof(struct edif_sa_update_aen);
+ break;
+ default:
+ keep = false;
+ ql_log(ql_log_warn, vha, 0x09102,
+ "%s unknown DB type=%d %p\n",
+ __func__, dbnode->ntype, dbnode);
+ break;
+ }
+ ap.event_data_size = dat_size;
+ /* 8 = sizeof(ap.event_code + ap.event_data_size) */
+ dat_size += 8;
+ if (keep)
+ sg_skip += sg_copy_buffer(bsg_job->reply_payload.sg_list,
+ bsg_job->reply_payload.sg_cnt,
+ &ap, dat_size, sg_skip, false);
+
+ ql_dbg(ql_dbg_edif, vha, 0x09102,
+ "%s Doorbell consumed : type=%d %p\n",
+ __func__, dbnode->ntype, dbnode);
+
+ kfree(dbnode);
+ } else {
+ break;
+ }
+ }
+
+ SET_DID_STATUS(bsg_reply->result, DID_OK);
+ bsg_reply->reply_payload_rcv_len = sg_skip;
+ bsg_job->reply_len = sizeof(struct fc_bsg_reply);
+
+ return 0;
+}
+
+static void __qla_edif_dbell_bsg_done(scsi_qla_host_t *vha, struct bsg_job *bsg_job,
+ u32 delay)
+{
+ struct fc_bsg_reply *bsg_reply = bsg_job->reply;
+
+ /* small sleep for doorbell events to accumulate */
+ if (delay)
+ msleep(delay);
+
+ qla_edif_consume_dbell(vha, bsg_job);
+
+ bsg_job_done(bsg_job, bsg_reply->result, bsg_reply->reply_payload_rcv_len);
+}
+
+static void qla_edif_dbell_bsg_done(scsi_qla_host_t *vha)
+{
+ unsigned long flags;
+ struct bsg_job *prev_bsg_job = NULL;
+
+ spin_lock_irqsave(&vha->e_dbell.db_lock, flags);
+ if (vha->e_dbell.dbell_bsg_job) {
+ prev_bsg_job = vha->e_dbell.dbell_bsg_job;
+ vha->e_dbell.dbell_bsg_job = NULL;
+ }
+ spin_unlock_irqrestore(&vha->e_dbell.db_lock, flags);
+
+ if (prev_bsg_job)
+ __qla_edif_dbell_bsg_done(vha, prev_bsg_job, 0);
+}
+
+static int
+qla_edif_dbell_bsg(scsi_qla_host_t *vha, struct bsg_job *bsg_job)
+{
+ unsigned long flags;
+ bool return_bsg = false;
+
+ /* flush previous dbell bsg */
+ qla_edif_dbell_bsg_done(vha);
+
+ spin_lock_irqsave(&vha->e_dbell.db_lock, flags);
+ if (list_empty(&vha->e_dbell.head) && DBELL_ACTIVE(vha)) {
+ /*
+ * when the next db event happens, bsg_job will return.
+ * Otherwise, timer will return it.
+ */
+ vha->e_dbell.dbell_bsg_job = bsg_job;
+ vha->e_dbell.bsg_expire = jiffies + 10 * HZ;
+ } else {
+ return_bsg = true;
+ }
+ spin_unlock_irqrestore(&vha->e_dbell.db_lock, flags);
+
+ if (return_bsg)
+ __qla_edif_dbell_bsg_done(vha, bsg_job, 1);
+
+ return 0;
+}
+
int32_t
qla_edif_app_mgmt(struct bsg_job *bsg_job)
{
bool done = true;
int32_t rval = 0;
uint32_t vnd_sc = bsg_request->rqst_data.h_vendor.vendor_cmd[1];
+ u32 level = ql_dbg_edif;
- ql_dbg(ql_dbg_edif, vha, 0x911d, "%s vnd subcmd=%x\n",
+ /* doorbell is high traffic */
+ if (vnd_sc == QL_VND_SC_READ_DBELL)
+ level = 0;
+
+ ql_dbg(level, vha, 0x911d, "%s vnd subcmd=%x\n",
__func__, vnd_sc);
sg_copy_to_buffer(bsg_job->request_payload.sg_list,
if (!vha->hw->flags.edif_enabled ||
test_bit(VPORT_DELETE, &vha->dpc_flags)) {
- ql_dbg(ql_dbg_edif, vha, 0x911d,
+ ql_dbg(level, vha, 0x911d,
"%s edif not enabled or vp delete. bsg ptr done %p. dpc_flags %lx\n",
__func__, bsg_job, vha->dpc_flags);
}
if (!qla_edif_app_check(vha, appcheck)) {
- ql_dbg(ql_dbg_edif, vha, 0x911d,
+ ql_dbg(level, vha, 0x911d,
"%s app checked failed.\n",
__func__);
case QL_VND_SC_AEN_COMPLETE:
rval = qla_edif_ack(vha, bsg_job);
break;
+ case QL_VND_SC_READ_DBELL:
+ rval = qla_edif_dbell_bsg(vha, bsg_job);
+ done = false;
+ break;
default:
ql_dbg(ql_dbg_edif, vha, 0x911d, "%s unknown cmd=%x\n",
__func__,
done:
if (done) {
- ql_dbg(ql_dbg_user, vha, 0x7009,
+ ql_dbg(level, vha, 0x7009,
"%s: %d bsg ptr done %p\n", __func__, __LINE__, bsg_job);
bsg_job_done(bsg_job, bsg_reply->result,
bsg_reply->reply_payload_rcv_len);
/* initialize lock which protects doorbell & init list */
spin_lock_init(&vha->e_dbell.db_lock);
INIT_LIST_HEAD(&vha->e_dbell.head);
-
- /* create and initialize doorbell */
- init_completion(&vha->e_dbell.dbell);
-}
-
-static void
-qla_edb_node_free(scsi_qla_host_t *vha, struct edb_node *node)
-{
- /*
- * releases the space held by this edb node entry
- * this function does _not_ free the edb node itself
- * NB: the edb node entry passed should not be on any list
- *
- * currently for doorbell there's no additional cleanup
- * needed, but here as a placeholder for furture use.
- */
-
- if (!node) {
- ql_dbg(ql_dbg_edif, vha, 0x09122,
- "%s error - no valid node passed\n", __func__);
- return;
- }
-
- node->ntype = N_UNDEF;
}
static void qla_edb_clear(scsi_qla_host_t *vha, port_id_t portid)
}
spin_unlock_irqrestore(&vha->e_dbell.db_lock, flags);
- list_for_each_entry_safe(e, tmp, &edb_list, list) {
+ list_for_each_entry_safe(e, tmp, &edb_list, list)
qla_edb_node_free(vha, e);
- list_del_init(&e->list);
- kfree(e);
- }
}
/* function called when app is stopping */
"%s freeing edb_node type=%x\n",
__func__, node->ntype);
qla_edb_node_free(vha, node);
- list_del(&node->list);
-
- kfree(node);
}
spin_unlock_irqrestore(&vha->e_dbell.db_lock, flags);
- /* wake up doorbell waiters - they'll be dismissed with error code */
- complete_all(&vha->e_dbell.dbell);
+ qla_edif_dbell_bsg_done(vha);
}
static struct edb_node *
list_add_tail(&ptr->list, &vha->e_dbell.head);
spin_unlock_irqrestore(&vha->e_dbell.db_lock, flags);
- /* ring doorbell for waiters */
- complete(&vha->e_dbell.dbell);
-
return true;
}
default:
ql_dbg(ql_dbg_edif, vha, 0x09102,
"%s unknown type: %x\n", __func__, dbtype);
- qla_edb_node_free(vha, edbnode);
kfree(edbnode);
edbnode = NULL;
break;
}
- if (edbnode && (!qla_edb_node_add(vha, edbnode))) {
+ if (edbnode) {
+ if (!qla_edb_node_add(vha, edbnode)) {
+ ql_dbg(ql_dbg_edif, vha, 0x09102,
+ "%s unable to add dbnode\n", __func__);
+ kfree(edbnode);
+ return;
+ }
ql_dbg(ql_dbg_edif, vha, 0x09102,
- "%s unable to add dbnode\n", __func__);
- qla_edb_node_free(vha, edbnode);
- kfree(edbnode);
- return;
- }
- if (edbnode && fcport)
- fcport->edif.auth_state = dbtype;
- ql_dbg(ql_dbg_edif, vha, 0x09102,
- "%s Doorbell produced : type=%d %p\n", __func__, dbtype, edbnode);
-}
-
-static struct edb_node *
-qla_edb_getnext(scsi_qla_host_t *vha)
-{
- unsigned long flags;
- struct edb_node *edbnode = NULL;
-
- spin_lock_irqsave(&vha->e_dbell.db_lock, flags);
-
- /* db nodes are fifo - no qualifications done */
- if (!list_empty(&vha->e_dbell.head)) {
- edbnode = list_first_entry(&vha->e_dbell.head,
- struct edb_node, list);
- list_del(&edbnode->list);
+ "%s Doorbell produced : type=%d %p\n", __func__, dbtype, edbnode);
+ qla_edif_dbell_bsg_done(vha);
+ if (fcport)
+ fcport->edif.auth_state = dbtype;
}
-
- spin_unlock_irqrestore(&vha->e_dbell.db_lock, flags);
-
- return edbnode;
}
void
ha->edif_post_stop_cnt_down = 60;
}
}
+
+ if (vha->e_dbell.dbell_bsg_job && time_after_eq(jiffies, vha->e_dbell.bsg_expire))
+ qla_edif_dbell_bsg_done(vha);
}
/*
"%s Doorbell consumed : type=%d %p\n",
__func__, dbnode->ntype, dbnode);
/* we're done with the db node, so free it up */
- qla_edb_node_free(vha, dbnode);
kfree(dbnode);
} else {
break;
projects / linux.git / commitdiff