libata-scsi: Update SATL for ZAC drives

ZAC (zoned-access command) drives translate into ZBC (Zoned block
command) device type for SCSI. So implement the correct mappings
into libata-scsi and update the SCSI command set versions.

Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 24 insertions, 1 deletions

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index bea6e7f4ebf0..1db6eab6dac3 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1969,6 +1969,7 @@ static void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
 static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
 {
         const u8 versions[] = {
+                0x00,
                 0x60,   /* SAM-3 (no version claimed) */
 
                 0x03,
@@ -1977,6 +1978,20 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
                 0x02,
                 0x60    /* SPC-3 (no version claimed) */
         };
+        const u8 versions_zbc[] = {
+                0x00,
+                0xA0,   /* SAM-5 (no version claimed) */
+
+                0x04,
+                0xC0,   /* SBC-3 (no version claimed) */
+
+                0x04,
+                0x60,   /* SPC-4 (no version claimed) */
+
+                0x60,
+                0x20,   /* ZBC (no version claimed) */
+        };
+
         u8 hdr[] = {
                 TYPE_DISK,
                 0,
@@ -1991,6 +2006,11 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
         if (ata_id_removeable(args->id))
                 hdr[1] |= (1 << 7);
 
+        if (args->dev->class == ATA_DEV_ZAC) {
+                hdr[0] = TYPE_ZBC;
+                hdr[2] = 0x6; /* ZBC is defined in SPC-4 */
+        }
+
         memcpy(rbuf, hdr, sizeof(hdr));
         memcpy(&rbuf[8], "ATA     ", 8);
         ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16);
@@ -2003,7 +2023,10 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
         if (rbuf[32] == 0 || rbuf[32] == ' ')
                 memcpy(&rbuf[32], "n/a ", 4);
 
-        memcpy(rbuf + 59, versions, sizeof(versions));
+        if (args->dev->class == ATA_DEV_ZAC)
+                memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc));
+        else
+                memcpy(rbuf + 58, versions, sizeof(versions));
 
         return 0;
 }