| Message ID | 20230819213040.1101044-2-ipylypiv@google.com |
|---|---|
| State | New |
| Headers | show |
| Series | Returning FIS on success for CDL | expand |
On Sat, Aug 19, 2023 at 02:30:39PM -0700, Igor Pylypiv wrote: > Set return_fis_on_success when libata requests result taskfile. > > For Command Duration Limits policy 0xD (command completes without > an error) libata needs FIS in order to detect the ATA_SENSE bit and > read the Sense Data for Successful NCQ Commands log (0Fh). > > Signed-off-by: Igor Pylypiv <ipylypiv@google.com> > --- > drivers/scsi/libsas/sas_ata.c | 3 +++ > include/scsi/libsas.h | 1 + > 2 files changed, 4 insertions(+) > > diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c > index 77714a495cbb..e74b60d9c4b3 100644 > --- a/drivers/scsi/libsas/sas_ata.c > +++ b/drivers/scsi/libsas/sas_ata.c > @@ -207,6 +207,9 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) > task->ata_task.use_ncq = ata_is_ncq(qc->tf.protocol); > task->ata_task.dma_xfer = ata_is_dma(qc->tf.protocol); > > + if (qc->flags & ATA_QCFLAG_RESULT_TF) > + task->ata_task.return_fis_on_success = 1; > + > if (qc->scsicmd) > ASSIGN_SAS_TASK(qc->scsicmd, task); > > diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h > index 159823e0afbf..9e2c69c13dd3 100644 > --- a/include/scsi/libsas.h > +++ b/include/scsi/libsas.h > @@ -550,6 +550,7 @@ struct sas_ata_task { > u8 use_ncq:1; > u8 set_affil_pol:1; > u8 stp_affil_pol:1; > + u8 return_fis_on_success:1; > > u8 device_control_reg_update:1; > > -- > 2.42.0.rc1.204.g551eb34607-goog > Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 77714a495cbb..e74b60d9c4b3 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -207,6 +207,9 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) task->ata_task.use_ncq = ata_is_ncq(qc->tf.protocol); task->ata_task.dma_xfer = ata_is_dma(qc->tf.protocol); + if (qc->flags & ATA_QCFLAG_RESULT_TF) + task->ata_task.return_fis_on_success = 1; + if (qc->scsicmd) ASSIGN_SAS_TASK(qc->scsicmd, task); diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index 159823e0afbf..9e2c69c13dd3 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -550,6 +550,7 @@ struct sas_ata_task { u8 use_ncq:1; u8 set_affil_pol:1; u8 stp_affil_pol:1; + u8 return_fis_on_success:1; u8 device_control_reg_update:1;
Set return_fis_on_success when libata requests result taskfile. For Command Duration Limits policy 0xD (command completes without an error) libata needs FIS in order to detect the ATA_SENSE bit and read the Sense Data for Successful NCQ Commands log (0Fh). Signed-off-by: Igor Pylypiv <ipylypiv@google.com> --- drivers/scsi/libsas/sas_ata.c | 3 +++ include/scsi/libsas.h | 1 + 2 files changed, 4 insertions(+)