[PATCH v3 4/4] hw/blocl/nvme: trigger async event during injecting smart warning

[zhenwei pi]

During smart critical warning injection by setting property from QMP
command, also try to trigger asynchronous event.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
---
 hw/block/nvme.c | 47 ++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 40 insertions(+), 7 deletions(-)

diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index ce9a9c9023..1feb603471 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -847,6 +847,36 @@ static void nvme_enqueue_event(NvmeCtrl *n, uint8_t 
event_type,
     nvme_process_aers(n);
 }
 
+static void nvme_enqueue_smart_event(NvmeCtrl *n, uint8_t event)
+{
+    uint8_t aer_info;
+
+    if (!(NVME_AEC_SMART(n->features.async_config) & event)) {
+        return;
+    }
+
+    /* Ref SPEC <Asynchronous Event Information – SMART / Health Status> */
+    switch (event) {
+    case NVME_SMART_SPARE:
+        aer_info = NVME_AER_INFO_SMART_SPARE_THRESH;
+        break;
+    case NVME_SMART_TEMPERATURE:
+        aer_info = NVME_AER_INFO_SMART_TEMP_THRESH;
+        break;
+    case NVME_SMART_RELIABILITY:
+    case NVME_SMART_MEDIA_READ_ONLY:
+    case NVME_SMART_FAILED_VOLATILE_MEDIA:
+        aer_info = NVME_AER_INFO_SMART_RELIABILITY;
+        break;
+    case NVME_SMART_PMR_UNRELIABLE:
+        /* TODO if NVME_SMART_PMR_UNRELIABLE is defined in future */
+    default:
+        return;
+    }
+
+    nvme_enqueue_event(n, NVME_AER_TYPE_SMART, aer_info, NVME_LOG_SMART_INFO);
+}
+
 static void nvme_clear_events(NvmeCtrl *n, uint8_t event_type)
 {
     n->aer_mask &= ~(1 << event_type);
@@ -1824,12 +1854,9 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, 
NvmeRequest *req)
             return NVME_INVALID_FIELD | NVME_DNR;
         }
 
-        if (((n->temperature >= n->features.temp_thresh_hi) ||
-             (n->temperature <= n->features.temp_thresh_low)) &&
-            NVME_AEC_SMART(n->features.async_config) & NVME_SMART_TEMPERATURE) 
{
-            nvme_enqueue_event(n, NVME_AER_TYPE_SMART,
-                               NVME_AER_INFO_SMART_TEMP_THRESH,
-                               NVME_LOG_SMART_INFO);
+        if ((n->temperature >= n->features.temp_thresh_hi) ||
+             (n->temperature <= n->features.temp_thresh_low)) {
+            nvme_enqueue_smart_event(n, NVME_AER_INFO_SMART_TEMP_THRESH);
         }
 
         break;
@@ -2841,7 +2868,7 @@ static void nvme_set_smart_warning(Object *obj, Visitor 
*v, const char *name,
                                    void *opaque, Error **errp)
 {
     NvmeCtrl *s = NVME(obj);
-    uint8_t value, cap = 0;
+    uint8_t value, cap = 0, event;
     uint64_t pmr_cap = CAP_PMR_MASK;
 
     if (!visit_type_uint8(v, name, &value, errp)) {
@@ -2860,6 +2887,12 @@ static void nvme_set_smart_warning(Object *obj, Visitor 
*v, const char *name,
     }
 
     s->smart_critical_warning = value;
+
+    /* test each bit of uint8_t for smart.critical_warning */
+    for (event = 0; event < 8; event++) {
+        if (value & (1 << event))
+            nvme_enqueue_smart_event(s, 1 << event);
+    }
 }
 
 static const VMStateDescription nvme_vmstate = {
-- 
2.25.1