[PATCH RFC v2 07/18] libata-scsi: Add ata_internal_queuecommand()

John Garry
2022-06-09T10:36:58Z

Add callback to queue reserved commands - call it "internal" as this is
what libata uses.

Also add it to the base ATA SHT, and set nr_reserved_cmds = 1, which
matches tag ATA_TAG_INTERNAL.

Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/ata/libata-scsi.c | 14 ++++++++++++++
include/linux/libata.h | 6 +++++-
2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index baac35dd17ca..b2702ab0183b 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1114,6 +1114,20 @@ int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev)
return 0;
}

+int ata_internal_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
+{
+ struct ata_port *ap;
+ int res;
+
+ ap = ata_shost_to_port(shost);
+ spin_lock_irq(ap->lock);
+ res = ata_sas_queuecmd(scmd, ap);
+ spin_unlock_irq(ap->lock);
+
+ return res;
+}
+EXPORT_SYMBOL_GPL(ata_internal_queuecommand);
+
/**
* ata_scsi_slave_config - Set SCSI device attributes
* @sdev: SCSI device to examine
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 43f4bcfe9a5f..5fa6f56bba81 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1141,6 +1141,8 @@ extern int ata_std_bios_param(struct scsi_device *sdev,
sector_t capacity, int geom[]);
extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
extern int ata_scsi_slave_config(struct scsi_device *sdev);
+extern int ata_internal_queuecommand(struct Scsi_Host *shost,
+ struct scsi_cmnd *scmd);
extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
int queue_depth);
@@ -1390,7 +1392,9 @@ extern const struct attribute_group *ata_common_sdev_groups[];
.proc_name = drv_name, \
.slave_destroy = ata_scsi_slave_destroy, \
.bios_param = ata_std_bios_param, \
- .unlock_native_capacity = ata_scsi_unlock_native_capacity
+ .unlock_native_capacity = ata_scsi_unlock_native_capacity,\
+ .nr_reserved_cmds = 1,\
+ .reserved_queuecommand = ata_internal_queuecommand

#define ATA_SUBBASE_SHT(drv_name) \
__ATA_BASE_SHT(drv_name), \
--
2.26.2