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authorShivasharan S <shivasharan.srikanteshwara@broadcom.com>2018-10-16 23:37:46 -0700
committerMartin K. Petersen <martin.petersen@oracle.com>2018-11-06 20:33:56 -0500
commite29c322133472628c6de85efb99ccd3b3df5571e (patch)
tree82fc1895d4703d44cb39900c390049fc869d2106 /drivers/scsi/megaraid
parent1401371d7f44d3ca420a3db98eb7191b3341074d (diff)
scsi: megaraid_sas: Fix combined reply queue mode detection
For Invader series, if FW supports more than 8 MSI-x vectors, driver needs to enable combined reply queue mode. For Ventura series, driver enables combined reply queue mode in case of more than 16 MSI-x vectors. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/megaraid')
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_base.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index bbabd6f08bd6..4687e86790a2 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -5415,12 +5415,29 @@ static int megasas_init_fw(struct megasas_instance *instance)
instance->msix_vectors = (scratch_pad_2
& MR_MAX_REPLY_QUEUES_OFFSET) + 1;
fw_msix_count = instance->msix_vectors;
- } else { /* Invader series supports more than 8 MSI-x vectors*/
+ } else {
instance->msix_vectors = ((scratch_pad_2
& MR_MAX_REPLY_QUEUES_EXT_OFFSET)
>> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
- if (instance->msix_vectors > 16)
- instance->msix_combined = true;
+
+ /*
+ * For Invader series, > 8 MSI-x vectors
+ * supported by FW/HW implies combined
+ * reply queue mode is enabled.
+ * For Ventura series, > 16 MSI-x vectors
+ * supported by FW/HW implies combined
+ * reply queue mode is enabled.
+ */
+ switch (instance->adapter_type) {
+ case INVADER_SERIES:
+ if (instance->msix_vectors > 8)
+ instance->msix_combined = true;
+ break;
+ case VENTURA_SERIES:
+ if (instance->msix_vectors > 16)
+ instance->msix_combined = true;
+ break;
+ }
if (rdpq_enable)
instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?