hw/nvme: add host behavior support feature

Add support for getting and setting the Host Behavior Support feature.

Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Naveen Nagar <naveen.n1@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>

3 files changed, 20 insertions, 1 deletions

diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index d08af3bdc1..71c60482c7 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -196,6 +196,7 @@ static const bool nvme_feature_support[NVME_FID_MAX] = {
     [NVME_WRITE_ATOMICITY]          = true,
     [NVME_ASYNCHRONOUS_EVENT_CONF]  = true,
     [NVME_TIMESTAMP]                = true,
+    [NVME_HOST_BEHAVIOR_SUPPORT]    = true,
     [NVME_COMMAND_SET_PROFILE]      = true,
 };
 
@@ -206,6 +207,7 @@ static const uint32_t nvme_feature_cap[NVME_FID_MAX] = {
     [NVME_NUMBER_OF_QUEUES]         = NVME_FEAT_CAP_CHANGE,
     [NVME_ASYNCHRONOUS_EVENT_CONF]  = NVME_FEAT_CAP_CHANGE,
     [NVME_TIMESTAMP]                = NVME_FEAT_CAP_CHANGE,
+    [NVME_HOST_BEHAVIOR_SUPPORT]    = NVME_FEAT_CAP_CHANGE,
     [NVME_COMMAND_SET_PROFILE]      = NVME_FEAT_CAP_CHANGE,
 };
 
@@ -5091,6 +5093,9 @@ static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeRequest *req)
         goto out;
     case NVME_TIMESTAMP:
         return nvme_get_feature_timestamp(n, req);
+    case NVME_HOST_BEHAVIOR_SUPPORT:
+        return nvme_c2h(n, (uint8_t *)&n->features.hbs,
+                        sizeof(n->features.hbs), req);
     default:
         break;
     }
@@ -5281,6 +5286,9 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeRequest *req)
         break;
     case NVME_TIMESTAMP:
         return nvme_set_feature_timestamp(n, req);
+    case NVME_HOST_BEHAVIOR_SUPPORT:
+        return nvme_h2c(n, (uint8_t *)&n->features.hbs,
+                        sizeof(n->features.hbs), req);
     case NVME_COMMAND_SET_PROFILE:
         if (dw11 & 0x1ff) {
             trace_pci_nvme_err_invalid_iocsci(dw11 & 0x1ff);
diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index 801176a2bd..103407038e 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -468,7 +468,9 @@ typedef struct NvmeCtrl {
             uint16_t temp_thresh_hi;
             uint16_t temp_thresh_low;
         };
-        uint32_t    async_config;
+
+        uint32_t                async_config;
+        NvmeHostBehaviorSupport hbs;
     } features;
 } NvmeCtrl;
 
diff --git a/include/block/nvme.h b/include/block/nvme.h
index cd068ac891..e527c728f9 100644
--- a/include/block/nvme.h
+++ b/include/block/nvme.h
@@ -1216,6 +1216,7 @@ enum NvmeFeatureIds {
     NVME_WRITE_ATOMICITY            = 0xa,
     NVME_ASYNCHRONOUS_EVENT_CONF    = 0xb,
     NVME_TIMESTAMP                  = 0xe,
+    NVME_HOST_BEHAVIOR_SUPPORT      = 0x16,
     NVME_COMMAND_SET_PROFILE        = 0x19,
     NVME_SOFTWARE_PROGRESS_MARKER   = 0x80,
     NVME_FID_MAX                    = 0x100,
@@ -1257,6 +1258,13 @@ typedef struct QEMU_PACKED NvmeRangeType {
     uint8_t     rsvd48[16];
 } NvmeRangeType;
 
+typedef struct NvmeHostBehaviorSupport {
+    uint8_t     acre;
+    uint8_t     etdas;
+    uint8_t     lbafee;
+    uint8_t     rsvd3[509];
+} NvmeHostBehaviorSupport;
+
 typedef struct QEMU_PACKED NvmeLBAF {
     uint16_t    ms;
     uint8_t     ds;
@@ -1520,6 +1528,7 @@ static inline void _nvme_check_size(void)
     QEMU_BUILD_BUG_ON(sizeof(NvmeDsmCmd) != 64);
     QEMU_BUILD_BUG_ON(sizeof(NvmeCopyCmd) != 64);
     QEMU_BUILD_BUG_ON(sizeof(NvmeRangeType) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeHostBehaviorSupport) != 512);
     QEMU_BUILD_BUG_ON(sizeof(NvmeErrorLog) != 64);
     QEMU_BUILD_BUG_ON(sizeof(NvmeFwSlotInfoLog) != 512);
     QEMU_BUILD_BUG_ON(sizeof(NvmeSmartLog) != 512);