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libata: Implement ZBC OUT translation

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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>
This commit is contained in:
Hannes Reinecke
2016-04-25 12:45:53 +02:00
committed by Tejun Heo
parent 28a3fc2295
commit 27708a9579
5 changed files with 92 additions and 0 deletions
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67
drivers/ata/libata-scsi.c
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@@ -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;
}