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scsi: libsas: Refactor sas_ata_hard_reset()

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Create function sas_ata_wait_after_reset() from sas_ata_hard_reset() as
some LLDDs may want to check for a remote ATA phy is up after reset.

Link: https://lore.kernel.org/r/1652354134-171343-2-git-send-email-john.garry@huawei.com
Tested-by: Yihang Li <liyihang6@hisilicon.com>
Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2022-05-12 19:15:32 +08:00 committed by Martin K. Petersen
parent 53d5088def
commit 057e5fc033
2 changed files with 34 additions and 14 deletions
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41
drivers/scsi/libsas/sas_ata.c
View File

@ -358,22 +358,14 @@ static int sas_ata_printk(const char *level, const struct domain_device *ddev,
return r;
}
static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
int sas_ata_wait_after_reset(struct domain_device *dev, unsigned long deadline)
{
int ret = 0, res;
struct sas_phy *phy;
struct ata_port *ap = link->ap;
struct sata_device *sata_dev = &dev->sata_dev;
int (*check_ready)(struct ata_link *link);
struct domain_device *dev = ap->private_data;
struct sas_internal *i = dev_to_sas_internal(dev);
res = i->dft->lldd_I_T_nexus_reset(dev);
if (res == -ENODEV)
return res;
if (res != TMF_RESP_FUNC_COMPLETE)
sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
struct ata_port *ap = sata_dev->ap;
struct ata_link *link = &ap->link;
struct sas_phy *phy;
int ret;
phy = sas_get_local_phy(dev);
if (scsi_is_sas_phy_local(phy))
@ -386,6 +378,27 @@ static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
if (ret && ret != -EAGAIN)
sas_ata_printk(KERN_ERR, dev, "reset failed (errno=%d)\n", ret);
return ret;
}
EXPORT_SYMBOL_GPL(sas_ata_wait_after_reset);
static int sas_ata_hard_reset(struct ata_link *link, unsigned int *class,
unsigned long deadline)
{
struct ata_port *ap = link->ap;
struct domain_device *dev = ap->private_data;
struct sas_internal *i = dev_to_sas_internal(dev);
int ret;
ret = i->dft->lldd_I_T_nexus_reset(dev);
if (ret == -ENODEV)
return ret;
if (ret != TMF_RESP_FUNC_COMPLETE)
sas_ata_printk(KERN_DEBUG, dev, "Unable to reset ata device?\n");
ret = sas_ata_wait_after_reset(dev, deadline);
*class = dev->sata_dev.class;
ap->cbl = ATA_CBL_SATA;

7
include/scsi/sas_ata.h
View File

@ -34,6 +34,7 @@ void sas_resume_sata(struct asd_sas_port *port);
void sas_ata_end_eh(struct ata_port *ap);
int sas_execute_ata_cmd(struct domain_device *device, u8 *fis,
int force_phy_id);
int sas_ata_wait_after_reset(struct domain_device *dev, unsigned long deadline);
#else
@ -91,6 +92,12 @@ static inline int sas_execute_ata_cmd(struct domain_device *device, u8 *fis,
{
return 0;
}
static inline int sas_ata_wait_after_reset(struct domain_device *dev,
unsigned long deadline)
{
return -ETIMEDOUT;
}
#endif
#endif /* _SAS_ATA_H_ */