scsi: libsas: Add struct sas_tmf_task

Some of the LLDDs which use libsas have their own definition of a struct
to hold TMF info, so add a common struct for libsas.

Also add an interim force phy id field for hisi_sas driver, which will be
removed once the STP "TMF" code is factored out.

Even though some LLDDs (pm8001) use a u32 for the tag, u16 will be adequate,
as that named driver only uses tags in range [0, 1024).

Link: https://lore.kernel.org/r/[email protected]
Tested-by: Yihang Li <[email protected]>
Tested-by: Damien Le Moal <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: John Garry <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index cd2b2b67bf93..7a55853fad7b 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -576,6 +576,15 @@ struct sas_ssp_task {
 	struct scsi_cmnd *cmd;
 };
 
+struct sas_tmf_task {
+	u8 tmf;
+	u16 tag_of_task_to_be_managed;
+
+	/* Temp */
+	int force_phy;
+	int phy_id;
+};
+
 struct sas_task {
 	struct domain_device *dev;