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libata: Implement ATA_DEV_ZAC 

Add new ATA device type for ZAC devices.

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>
This commit is contained in:
Hannes Reinecke 2014-11-05 13:08:21 +01:00 committed by Tejun Heo
parent 1cbd772d9a
commit 9162c6579b
5 changed files with 27 additions and 12 deletions
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20
drivers/ata/libata-core.c
View File

@ -1043,8 +1043,8 @@ const char *sata_spd_string(unsigned int spd)
* None.
*
* RETURNS:
* Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP or
* %ATA_DEV_UNKNOWN the event of failure.
* Device type, %ATA_DEV_ATA, %ATA_DEV_ATAPI, %ATA_DEV_PMP,
* %ATA_DEV_ZAC, or %ATA_DEV_UNKNOWN the event of failure.
*/
unsigned int ata_dev_classify(const struct ata_taskfile *tf)
{
@ -1089,6 +1089,11 @@ unsigned int ata_dev_classify(const struct ata_taskfile *tf)
return ATA_DEV_SEMB;
}
if ((tf->lbam == 0xcd) && (tf->lbah == 0xab)) {
DPRINTK("found ZAC device by sig\n");
return ATA_DEV_ZAC;
}
DPRINTK("unknown device\n");
return ATA_DEV_UNKNOWN;
}
@ -1329,7 +1334,7 @@ static int ata_hpa_resize(struct ata_device *dev)
int rc;
/* do we need to do it? */
if (dev->class != ATA_DEV_ATA ||
if ((dev->class != ATA_DEV_ATA && dev->class != ATA_DEV_ZAC) ||
!ata_id_has_lba(dev->id) || !ata_id_hpa_enabled(dev->id) ||
(dev->horkage & ATA_HORKAGE_BROKEN_HPA))
return 0;
@ -1889,6 +1894,7 @@ retry:
case ATA_DEV_SEMB:
class = ATA_DEV_ATA; /* some hard drives report SEMB sig */
case ATA_DEV_ATA:
case ATA_DEV_ZAC:
tf.command = ATA_CMD_ID_ATA;
break;
case ATA_DEV_ATAPI:
@ -1980,7 +1986,7 @@ retry:
rc = -EINVAL;
reason = "device reports invalid type";
if (class == ATA_DEV_ATA) {
if (class == ATA_DEV_ATA || class == ATA_DEV_ZAC) {
if (!ata_id_is_ata(id) && !ata_id_is_cfa(id))
goto err_out;
if (ap->host->flags & ATA_HOST_IGNORE_ATA &&
@ -2015,7 +2021,8 @@ retry:
goto retry;
}
if ((flags & ATA_READID_POSTRESET) && class == ATA_DEV_ATA) {
if ((flags & ATA_READID_POSTRESET) &&
(class == ATA_DEV_ATA || class == ATA_DEV_ZAC)) {
/*
* The exact sequence expected by certain pre-ATA4 drives is:
* SRST RESET
@ -2280,7 +2287,7 @@ int ata_dev_configure(struct ata_device *dev)
sizeof(modelbuf));
/* ATA-specific feature tests */
if (dev->class == ATA_DEV_ATA) {
if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) {
if (ata_id_is_cfa(id)) {
/* CPRM may make this media unusable */
if (id[ATA_ID_CFA_KEY_MGMT] & 1)
@ -4033,6 +4040,7 @@ int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
if (ata_class_enabled(new_class) &&
new_class != ATA_DEV_ATA &&
new_class != ATA_DEV_ATAPI &&
new_class != ATA_DEV_ZAC &&
new_class != ATA_DEV_SEMB) {
ata_dev_info(dev, "class mismatch %u != %u\n",
dev->class, new_class);

7
drivers/ata/libata-eh.c
View File

@ -1809,6 +1809,7 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
switch (qc->dev->class) {
case ATA_DEV_ATA:
case ATA_DEV_ZAC:
if (err & ATA_ICRC)
qc->err_mask |= AC_ERR_ATA_BUS;
if (err & (ATA_UNC | ATA_AMNF))
@ -3792,7 +3793,8 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
struct ata_eh_context *ehc = &link->eh_context;
unsigned long tmp;
if (dev->class != ATA_DEV_ATA)
if (dev->class != ATA_DEV_ATA &&
dev->class != ATA_DEV_ZAC)
continue;
if (!(ehc->i.dev_action[dev->devno] &
ATA_EH_PARK))
@ -3873,7 +3875,8 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
/* retry flush if necessary */
ata_for_each_dev(dev, link, ALL) {
if (dev->class != ATA_DEV_ATA)
if (dev->class != ATA_DEV_ATA &&
dev->class != ATA_DEV_ZAC)
continue;
rc = ata_eh_maybe_retry_flush(dev);
if (rc)

5
drivers/ata/libata-scsi.c
View File

@ -235,7 +235,8 @@ static ssize_t ata_scsi_park_store(struct device *device,
rc = -ENODEV;
goto unlock;
}
if (dev->class != ATA_DEV_ATA) {
if (dev->class != ATA_DEV_ATA &&
dev->class != ATA_DEV_ZAC) {
rc = -EOPNOTSUPP;
goto unlock;
}
@ -3412,7 +3413,7 @@ static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd,
ata_xlat_func_t xlat_func;
int rc = 0;
if (dev->class == ATA_DEV_ATA) {
if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) {
if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len))
goto bad_cdb_len;

1
drivers/ata/libata-transport.c
View File

@ -143,6 +143,7 @@ static struct {
{ ATA_DEV_PMP_UNSUP, "pmp" },
{ ATA_DEV_SEMB, "semb" },
{ ATA_DEV_SEMB_UNSUP, "semb" },
{ ATA_DEV_ZAC, "zac" },
{ ATA_DEV_NONE, "none" }
};
ata_bitfield_name_search(class, ata_class_names)

6
include/linux/libata.h
View File

@ -191,7 +191,8 @@ enum {
ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */
ATA_DEV_SEMB = 7, /* SEMB */
ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */
ATA_DEV_NONE = 9, /* no device */
ATA_DEV_ZAC = 9, /* ZAC device */
ATA_DEV_NONE = 10, /* no device */
/* struct ata_link flags */
ATA_LFLAG_NO_HRST = (1 << 1), /* avoid hardreset */
@ -1491,7 +1492,8 @@ static inline unsigned int ata_tag_internal(unsigned int tag)
static inline unsigned int ata_class_enabled(unsigned int class)
{
return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
class == ATA_DEV_PMP || class == ATA_DEV_SEMB;
class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
class == ATA_DEV_ZAC;
}
static inline unsigned int ata_class_disabled(unsigned int class)