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authorHannes Reinecke <hare@suse.de>2016-04-25 12:45:53 +0200
committerTejun Heo <tj@kernel.org>2016-05-09 12:36:46 -0400
commit27708a9579ee069c6e0ebb6e61ac1114ed1d546c (patch)
tree1c3621cfb397453ea044274a5940b23dcd4d1856 /drivers
parent28a3fc2295a744a0d2ddf86b2ccdf03fbab123f9 (diff)
downloadop-kernel-dev-27708a9579ee069c6e0ebb6e61ac1114ed1d546c.zip
op-kernel-dev-27708a9579ee069c6e0ebb6e61ac1114ed1d546c.tar.gz
libata: Implement ZBC OUT translation
ZAC drives implement a 'ZAC Management Out' command template, which maps onto the ZBC OUT command. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ata/libata-eh.c1
-rw-r--r--drivers/ata/libata-scsi.c67
-rw-r--r--drivers/ata/libata-trace.c16
3 files changed, 84 insertions, 0 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index ee6c572..61dc7a9 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2483,6 +2483,7 @@ const char *ata_get_cmd_descript(u8 command)
{ ATA_CMD_REQ_SENSE_DATA, "REQUEST SENSE DATA EXT" },
{ ATA_CMD_SANITIZE_DEVICE, "SANITIZE DEVICE" },
{ ATA_CMD_ZAC_MGMT_IN, "ZAC MANAGEMENT IN" },
+ { ATA_CMD_ZAC_MGMT_OUT, "ZAC MANAGEMENT OUT" },
{ ATA_CMD_READ_LONG, "READ LONG (with retries)" },
{ ATA_CMD_READ_LONG_ONCE, "READ LONG (without retries)" },
{ ATA_CMD_WRITE_LONG, "WRITE LONG (with retries)" },
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 06d5a62..6afd084 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3471,6 +3471,70 @@ invalid_param_len:
return 1;
}
+static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc)
+{
+ struct ata_taskfile *tf = &qc->tf;
+ struct scsi_cmnd *scmd = qc->scsicmd;
+ struct ata_device *dev = qc->dev;
+ const u8 *cdb = scmd->cmnd;
+ u8 reset_all, sa;
+ u64 block;
+ u32 n_block;
+ u16 fp = (u16)-1;
+
+ if (unlikely(scmd->cmd_len < 16)) {
+ fp = 15;
+ goto invalid_fld;
+ }
+
+ sa = cdb[1] & 0x1f;
+ if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) &&
+ (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) {
+ fp = 1;
+ goto invalid_fld;
+ }
+
+ scsi_16_lba_len(cdb, &block, &n_block);
+ if (n_block) {
+ /*
+ * ZAC MANAGEMENT OUT doesn't define any length
+ */
+ goto invalid_param_len;
+ }
+ if (block > dev->n_sectors)
+ goto out_of_range;
+
+ reset_all = cdb[14] & 0x1;
+
+ tf->protocol = ATA_PROT_NODATA;
+ tf->command = ATA_CMD_ZAC_MGMT_OUT;
+ tf->feature = sa;
+ tf->hob_feature = reset_all & 0x1;
+
+ tf->lbah = (block >> 16) & 0xff;
+ tf->lbam = (block >> 8) & 0xff;
+ tf->lbal = block & 0xff;
+ tf->hob_lbah = (block >> 40) & 0xff;
+ tf->hob_lbam = (block >> 32) & 0xff;
+ tf->hob_lbal = (block >> 24) & 0xff;
+ tf->device = ATA_LBA;
+ tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48;
+
+ return 0;
+
+ invalid_fld:
+ ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff);
+ return 1;
+ out_of_range:
+ /* "Logical Block Address out of range" */
+ ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x00);
+ return 1;
+invalid_param_len:
+ /* "Parameter list length error" */
+ ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
+ return 1;
+}
+
/**
* ata_mselect_caching - Simulate MODE SELECT for caching info page
* @qc: Storage for translated ATA taskfile
@@ -3789,6 +3853,9 @@ static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
case ZBC_IN:
return ata_scsi_zbc_in_xlat;
+ case ZBC_OUT:
+ return ata_scsi_zbc_out_xlat;
+
case START_STOP:
return ata_scsi_start_stop_xlat;
}
diff --git a/drivers/ata/libata-trace.c b/drivers/ata/libata-trace.c
index 9caeabd..1111ba7 100644
--- a/drivers/ata/libata-trace.c
+++ b/drivers/ata/libata-trace.c
@@ -197,6 +197,22 @@ libata_trace_parse_subcmd(struct trace_seq *p, unsigned char cmd,
break;
}
break;
+ case ATA_CMD_ZAC_MGMT_OUT:
+ switch (feature) {
+ case ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE:
+ trace_seq_printf(p, " CLOSE_ZONE");
+ break;
+ case ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE:
+ trace_seq_printf(p, " FINISH_ZONE");
+ break;
+ case ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE:
+ trace_seq_printf(p, " OPEN_ZONE");
+ break;
+ case ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER:
+ trace_seq_printf(p, " RESET_WRITE_POINTER");
+ break;
+ }
+ break;
}
trace_seq_putc(p, 0);
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