19 /* Artificial limit on the number of events a log can hold */
22 static void reset_overflow(CXLEventLog *log)  in reset_overflow()  argument
24     log->overflow_err_count = 0;  in reset_overflow()
25     log->first_overflow_timestamp = 0;  in reset_overflow()
26     log->last_overflow_timestamp = 0;  in reset_overflow()
31     CXLEventLog *log;  in cxl_event_init()  local
35         log = &cxlds->event_logs[i];  in cxl_event_init()
36         log->next_handle = 1;  in cxl_event_init()
37         log->overflow_err_count = 0;  in cxl_event_init()
38         log->first_overflow_timestamp = 0;  in cxl_event_init()
39         log->last_overflow_timestamp = 0;  in cxl_event_init()
40         log->irq_enabled = false;  in cxl_event_init()
41         log->irq_vec = start_msg_num++;  in cxl_event_init()
42         qemu_mutex_init(&log->lock);  in cxl_event_init()
43         QSIMPLEQ_INIT(&log->events);  in cxl_event_init()
52 static CXLEvent *cxl_event_get_head(CXLEventLog *log)  in cxl_event_get_head()  argument
54     return QSIMPLEQ_FIRST(&log->events);  in cxl_event_get_head()
62 static int cxl_event_count(CXLEventLog *log)  in cxl_event_count()  argument
67     QSIMPLEQ_FOREACH(event, &log->events, node) {  in cxl_event_count()
74 static bool cxl_event_empty(CXLEventLog *log)  in cxl_event_empty()  argument
76     return QSIMPLEQ_EMPTY(&log->events);  in cxl_event_empty()
81                                   CXLEventLog *log)  in cxl_event_delete_head()  argument
83     CXLEvent *entry = cxl_event_get_head(log);  in cxl_event_delete_head()
85     reset_overflow(log);  in cxl_event_delete_head()
86     QSIMPLEQ_REMOVE_HEAD(&log->events, node);  in cxl_event_delete_head()
87     if (cxl_event_empty(log)) {  in cxl_event_delete_head()
101     CXLEventLog *log;  in cxl_event_insert()  local
110     log = &cxlds->event_logs[log_type];  in cxl_event_insert()
112     QEMU_LOCK_GUARD(&log->lock);  in cxl_event_insert()
114     if (cxl_event_count(log) >= CXL_TEST_EVENT_OVERFLOW) {  in cxl_event_insert()
115         if (log->overflow_err_count == 0) {  in cxl_event_insert()
116             log->first_overflow_timestamp = time;  in cxl_event_insert()
118         log->overflow_err_count++;  in cxl_event_insert()
119         log->last_overflow_timestamp = time;  in cxl_event_insert()
127     entry->data.hdr.handle = cpu_to_le16(log->next_handle);  in cxl_event_insert()
128     log->next_handle++;  in cxl_event_insert()
130     if (log->next_handle == 0) {  in cxl_event_insert()
131         log->next_handle++;  in cxl_event_insert()
135     QSIMPLEQ_INSERT_TAIL(&log->events, entry, node);  in cxl_event_insert()
139     return cxl_event_count(log) == 1;  in cxl_event_insert()
145     CXLEventLog *log;  in cxl_discard_all_event_records()  local
148         log = &cxlds->event_logs[log_type];  in cxl_discard_all_event_records()
149         while (!cxl_event_empty(log)) {  in cxl_discard_all_event_records()
150             cxl_event_delete_head(cxlds, log_type, log);  in cxl_discard_all_event_records()
159     CXLEventLog *log;  in cxl_event_get_records()  local
167     log = &cxlds->event_logs[log_type];  in cxl_event_get_records()
169     QEMU_LOCK_GUARD(&log->lock);  in cxl_event_get_records()
171     entry = cxl_event_get_head(log);  in cxl_event_get_records()
177     if (!cxl_event_empty(log)) {  in cxl_event_get_records()
181     if (log->overflow_err_count) {  in cxl_event_get_records()
183         pl->overflow_err_count = cpu_to_le16(log->overflow_err_count);  in cxl_event_get_records()
185             cpu_to_le64(log->first_overflow_timestamp);  in cxl_event_get_records()
187             cpu_to_le64(log->last_overflow_timestamp);  in cxl_event_get_records()
199     CXLEventLog *log;  in cxl_event_clear_records()  local
210     log = &cxlds->event_logs[log_type];  in cxl_event_clear_records()
212     QEMU_LOCK_GUARD(&log->lock);  in cxl_event_clear_records()
222     entry = cxl_event_get_head(log);  in cxl_event_clear_records()
233     entry = cxl_event_get_head(log);  in cxl_event_clear_records()
235         cxl_event_delete_head(cxlds, log_type, log);  in cxl_event_clear_records()
236         entry = cxl_event_get_head(log);  in cxl_event_clear_records()
249         CXLEventLog *log = &cxlds->event_logs[i];  in cxl_event_irq_assert()  local
251         if (!log->irq_enabled || cxl_event_empty(log)) {  in cxl_event_irq_assert()
257             msix_notify(pdev, log->irq_vec);  in cxl_event_irq_assert()
259             msi_notify(pdev, log->irq_vec);  in cxl_event_irq_assert()