diff mbox series

[v3,14/18] megaraid_sas: Enable coalescing for high IOPs queues

Message ID 20190625110436.4703-15-chandrakanth.patil@broadcom.com (mailing list archive)
State Accepted
Headers show
Series megaraid_sas: driver updates to 07.710.06.00-rc1 | expand

Commit Message

Chandrakanth Patil June 25, 2019, 11:04 a.m. UTC 
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@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h        | 2 +-
 drivers/scsi/megaraid/megaraid_sas_fusion.c | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)
diff mbox series

Patch

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 44bfbe8..845ca2f 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 =