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scsi: megaraid_sas: Enable coalescing for high IOPS queues

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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>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Chandrakanth Patil 2019-06-25 16:34:32 +05:30 committed by Martin K. Petersen
parent 132147d7f6
commit ea836f40f8
2 changed files with 9 additions and 1 deletions
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2
drivers/scsi/megaraid/megaraid_sas.h
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@ -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 */

8
drivers/scsi/megaraid/megaraid_sas_fusion.c
View File

@ -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 =