Driver should enable interrupt coalescing(during driver load and after
Controller Reset) for High IOPs queues by masking appropriate bits in
IOC INIT frame.
Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@xxxxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas.h | 2 +-
drivers/scsi/megaraid/megaraid_sas_fusion.c | 8 ++++++++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 5b17d0f..02e6e15 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1819,7 +1819,7 @@ struct megasas_init_frame {
__le32 pad_0; /*0Ch */
__le16 flags; /*10h */
- __le16 reserved_3; /*12h */
+ __le16 replyqueue_mask; /*12h */
__le32 data_xfer_len; /*14h */
__le32 queue_info_new_phys_addr_lo; /*18h */
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 4ebcb11..e08b3ff 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -1186,6 +1186,14 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
cpu_to_le32(lower_32_bits(ioc_init_handle));
init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
+ /*
+ * Each bit in replyqueue_mask represents one group of MSI-x vectors
+ * (each group has 8 vectors)
+ */
+ if (instance->balanced_mode)
+ init_frame->replyqueue_mask =
+ cpu_to_le16(~(~0 << instance->low_latency_index_start / 8));
+
req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
req_desc.MFAIo.RequestFlags =
--
2.9.5
