libata: Add support for queued DSM TRIM

Some new SSDs support the queued version of the DSM TRIM command.
Let the driver use the new command if supported.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index a988c2d7d0e8..0e23c26485f4 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1606,6 +1606,13 @@ static inline int ata_ncq_enabled(struct ata_device *dev)
                               ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
 }
 
+static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
+{
+        return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
+                (dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
+                 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
+}
+
 static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
 {
         qc->tf.ctl |= ATA_NIEN;