@@ -1303,6 +1303,27 @@ static u16 nvmet_set_feat_irq_coalesce(struct nvmet_req *req)
return ctrl->ops->set_feature(ctrl, NVME_FEAT_IRQ_COALESCE, &irqc);
}
+static u16 nvmet_set_feat_irq_config(struct nvmet_req *req)
+{
+ struct nvmet_ctrl *ctrl = req->sq->ctrl;
+ u32 cdw11 = le32_to_cpu(req->cmd->common.cdw11);
+ struct nvmet_feat_irq_config irqcfg = {
+ .iv = cdw11 & 0xffff,
+ .cd = (cdw11 >> 16) & 0x1,
+ };
+
+ /*
+ * This feature is not supported for fabrics controllers and mandatory
+ * for PCI controllers.
+ */
+ if (!nvmet_is_pci_ctrl(ctrl)) {
+ req->error_loc = offsetof(struct nvme_common_command, cdw10);
+ return NVME_SC_INVALID_FIELD | NVME_STATUS_DNR;
+ }
+
+ return ctrl->ops->set_feature(ctrl, NVME_FEAT_IRQ_CONFIG, &irqcfg);
+}
+
void nvmet_execute_set_features(struct nvmet_req *req)
{
struct nvmet_subsys *subsys = nvmet_req_subsys(req);
@@ -1329,6 +1350,9 @@ void nvmet_execute_set_features(struct nvmet_req *req)
case NVME_FEAT_IRQ_COALESCE:
status = nvmet_set_feat_irq_coalesce(req);
break;
+ case NVME_FEAT_IRQ_CONFIG:
+ status = nvmet_set_feat_irq_config(req);
+ break;
case NVME_FEAT_KATO:
status = nvmet_set_feat_kato(req);
break;
@@ -1397,6 +1421,31 @@ static u16 nvmet_get_feat_irq_coalesce(struct nvmet_req *req)
return NVME_SC_SUCCESS;
}
+static u16 nvmet_get_feat_irq_config(struct nvmet_req *req)
+{
+ struct nvmet_ctrl *ctrl = req->sq->ctrl;
+ u32 iv = le32_to_cpu(req->cmd->common.cdw11) & 0xffff;
+ struct nvmet_feat_irq_config irqcfg = { .iv = iv };
+ u16 status;
+
+ /*
+ * This feature is not supported for fabrics controllers and mandatory
+ * for PCI controllers.
+ */
+ if (!nvmet_is_pci_ctrl(ctrl)) {
+ req->error_loc = offsetof(struct nvme_common_command, cdw10);
+ return NVME_SC_INVALID_FIELD | NVME_STATUS_DNR;
+ }
+
+ status = ctrl->ops->get_feature(ctrl, NVME_FEAT_IRQ_CONFIG, &irqcfg);
+ if (status != NVME_SC_SUCCESS)
+ return status;
+
+ nvmet_set_result(req, ((u32)irqcfg.cd << 16) | iv);
+
+ return NVME_SC_SUCCESS;
+}
+
void nvmet_get_feat_kato(struct nvmet_req *req)
{
nvmet_set_result(req, req->sq->ctrl->kato * 1000);
@@ -1431,14 +1480,15 @@ void nvmet_execute_get_features(struct nvmet_req *req)
break;
case NVME_FEAT_ERR_RECOVERY:
break;
- case NVME_FEAT_IRQ_CONFIG:
- break;
case NVME_FEAT_WRITE_ATOMIC:
break;
#endif
case NVME_FEAT_IRQ_COALESCE:
status = nvmet_get_feat_irq_coalesce(req);
break;
+ case NVME_FEAT_IRQ_CONFIG:
+ status = nvmet_get_feat_irq_config(req);
+ break;
case NVME_FEAT_ASYNC_EVENT:
nvmet_get_feat_async_event(req);
break;
@@ -916,4 +916,9 @@ struct nvmet_feat_irq_coalesce {
u8 time;
};
+struct nvmet_feat_irq_config {
+ u16 iv;
+ bool cd;
+};
+
#endif /* _NVMET_H */
The NVMe base specifications v2.1 mandate supporting the interrupt config feature (NVME_FEAT_IRQ_CONFIG) for PCI controllers. Introduce the data structure struct nvmet_feat_irq_config to define the coalescing disabled (cd) and interrupt vector (iv) fields of this feature and implement the functions nvmet_get_feat_irq_config() and nvmet_set_feat_irq_config() functions to get and set these fields. These functions respectively use the controller get_feature() and set_feature() operations to fill and handle the fields of struct nvmet_feat_irq_config. Support for this feature is prohibited for fabrics controllers. If a get feature command or a set feature command for this feature is received for a fabrics controller, the command is failed with an invalid field error. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> --- drivers/nvme/target/admin-cmd.c | 54 +++++++++++++++++++++++++++++++-- drivers/nvme/target/nvmet.h | 5 +++ 2 files changed, 57 insertions(+), 2 deletions(-)