From c2bb195d18092ef6612eca1bca1e3f51d8c56f1d Mon Sep 17 00:00:00 2001
From: imp <imp@FreeBSD.org>
Date: Thu, 15 Nov 2018 16:02:34 +0000
Subject: [PATCH] Introduce scsi_ata_setfeatures() as a convenient way to make
 a passthru ATA SETFEATURES command.

Sponsored by: Netflix, Inc
---
 sys/cam/scsi/scsi_all.c | 32 ++++++++++++++++++++++++++++++++
 sys/cam/scsi/scsi_all.h |  6 ++++++
 2 files changed, 38 insertions(+)

diff --git a/sys/cam/scsi/scsi_all.c b/sys/cam/scsi/scsi_all.c
index 91df394f22e0..3b38559b36b1 100644
--- a/sys/cam/scsi/scsi_all.c
+++ b/sys/cam/scsi/scsi_all.c
@@ -8401,6 +8401,38 @@ scsi_ata_read_log(struct ccb_scsiio *csio, uint32_t retries,
 	return (retval);
 }
 
+int scsi_ata_setfeatures(struct ccb_scsiio *csio, uint32_t retries,
+			 void (*cbfcnp)(struct cam_periph *, union ccb *),
+			 uint8_t tag_action, uint8_t feature,
+			 uint64_t lba, uint32_t count,
+			 uint8_t sense_len, uint32_t timeout)
+{
+	return (scsi_ata_pass(csio,
+		retries,
+		cbfcnp,
+		/*flags*/CAM_DIR_NONE,
+		tag_action,
+		/*protocol*/AP_PROTO_PIO_IN,
+		/*ata_flags*/AP_FLAG_TDIR_FROM_DEV |
+			     AP_FLAG_BYT_BLOK_BYTES |
+			     AP_FLAG_TLEN_SECT_CNT,
+		/*features*/feature,
+		/*sector_count*/count,
+		/*lba*/lba,
+		/*command*/ATA_SETFEATURES,
+		/*device*/ 0,
+		/*icc*/ 0,
+		/*auxiliary*/0,
+		/*control*/0,
+		/*data_ptr*/NULL,
+		/*dxfer_len*/0,
+		/*cdb_storage*/NULL,
+		/*cdb_storage_len*/0,
+		/*minimum_cmd_size*/0,
+		sense_len,
+		timeout));
+}
+
 /*
  * Note! This is an unusual CDB building function because it can return
  * an error in the event that the command in question requires a variable
diff --git a/sys/cam/scsi/scsi_all.h b/sys/cam/scsi/scsi_all.h
index 80f8a221cc3e..b5c45bc02a42 100644
--- a/sys/cam/scsi/scsi_all.h
+++ b/sys/cam/scsi/scsi_all.h
@@ -4176,6 +4176,12 @@ int scsi_ata_read_log(struct ccb_scsiio *csio, uint32_t retries,
 		      uint8_t protocol, uint8_t *data_ptr, uint32_t dxfer_len,
 		      uint8_t sense_len, uint32_t timeout);
 
+int scsi_ata_setfeatures(struct ccb_scsiio *csio, uint32_t retries,
+			 void (*cbfcnp)(struct cam_periph *, union ccb *),
+			 uint8_t tag_action, uint8_t feature,
+			 uint64_t lba, uint32_t count,
+			 uint8_t sense_len, uint32_t timeout);
+
 int scsi_ata_pass(struct ccb_scsiio *csio, uint32_t retries,
 		  void (*cbfcnp)(struct cam_periph *, union ccb *),
 		  uint32_t flags, uint8_t tag_action,