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| author | Suganath Prabu S <suganath-prabu.subramani@broadcom.com> | 2019-05-31 14:14:41 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-19 01:46:26 +0200 |
| commit | 2426f20903ff4ee83cef585b2130ed45adc865d8 (patch) | |
| tree | 1bf68bde155877e3014cbbcc0812ad14ac9ba80f /drivers/scsi/mpt3sas/mpt3sas_base.h | |
| parent | scsi: mpt3sas: Affinity high iops queues IRQs to local node (diff) | |
| download | linux-2426f20903ff4ee83cef585b2130ed45adc865d8.tar.xz linux-2426f20903ff4ee83cef585b2130ed45adc865d8.zip | |
scsi: mpt3sas: Enable interrupt coalescing on high iops
Enable interrupt coalescing only on high iops queues.
In ioc config page 1, offset 0x14 (ProductSpecific field) is used to
determine interrupt coalescing enabled/disabled on per reply descriptor
post queue group(8) basis. If 31st bit is zero, then interrupt coalescing
is enabled for all reply descriptor post queues. If 31st bit is set to one,
then user can enable/disable interrupt coalescing on per reply descriptor
post queue group(8) basis. So to enable interrupt coalescing only on first
reply descriptor post queue group (i.e. on high iops queues), set bit 0 and
31.
This configuration should reset during driver unload or shutdown to the
default settings. For this, the driver takes copy of default ioc page 1 and
copies back the default or unmodified ioc page1 during unload and
shutdown. This means that on next driver load (e.g. if older version driver
is loaded by user), current modified changes on ioc page1 won't take
effect.
Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/mpt3sas/mpt3sas_base.h')
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_base.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h index f3818e30baed..b5a2071f6e0e 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.h +++ b/drivers/scsi/mpt3sas/mpt3sas_base.h @@ -1286,6 +1286,7 @@ struct MPT3SAS_ADAPTER { Mpi2IOUnitPage0_t iounit_pg0; Mpi2IOUnitPage1_t iounit_pg1; Mpi2IOUnitPage8_t iounit_pg8; + Mpi2IOCPage1_t ioc_pg1_copy; struct _boot_device req_boot_device; struct _boot_device req_alt_boot_device; @@ -1634,6 +1635,10 @@ int mpt3sas_config_get_sas_iounit_pg1(struct MPT3SAS_ADAPTER *ioc, int mpt3sas_config_set_sas_iounit_pg1(struct MPT3SAS_ADAPTER *ioc, Mpi2ConfigReply_t *mpi_reply, Mpi2SasIOUnitPage1_t *config_page, u16 sz); +int mpt3sas_config_get_ioc_pg1(struct MPT3SAS_ADAPTER *ioc, Mpi2ConfigReply_t + *mpi_reply, Mpi2IOCPage1_t *config_page); +int mpt3sas_config_set_ioc_pg1(struct MPT3SAS_ADAPTER *ioc, Mpi2ConfigReply_t + *mpi_reply, Mpi2IOCPage1_t *config_page); int mpt3sas_config_get_ioc_pg8(struct MPT3SAS_ADAPTER *ioc, Mpi2ConfigReply_t *mpi_reply, Mpi2IOCPage8_t *config_page); int mpt3sas_config_get_expander_pg0(struct MPT3SAS_ADAPTER *ioc, |