提交 dc4e3ec9 编写于 作者: S Shivasharan S 提交者: Greg Kroah-Hartman

scsi: megaraid_sas: Fix combined reply queue mode detection

[ Upstream commit e29c322133472628c6de85efb99ccd3b3df5571e ]

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: NSumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: NShivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>
上级 eb124aaa
...@@ -5325,12 +5325,29 @@ static int megasas_init_fw(struct megasas_instance *instance) ...@@ -5325,12 +5325,29 @@ static int megasas_init_fw(struct megasas_instance *instance)
instance->msix_vectors = (scratch_pad_2 instance->msix_vectors = (scratch_pad_2
& MR_MAX_REPLY_QUEUES_OFFSET) + 1; & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
fw_msix_count = instance->msix_vectors; fw_msix_count = instance->msix_vectors;
} else { /* Invader series supports more than 8 MSI-x vectors*/ } else {
instance->msix_vectors = ((scratch_pad_2 instance->msix_vectors = ((scratch_pad_2
& MR_MAX_REPLY_QUEUES_EXT_OFFSET) & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
>> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1; >> 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) if (rdpq_enable)
instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
......
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