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[SCSI] libsas: set attached device type and target protocols for local phys

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Before:
$ cat /sys/class/sas_phy/phy-6\:3/device_type
none
$ cat /sys/class/sas_phy/phy-6\:3/target_port_protocols
none

After:
$ cat /sys/class/sas_phy/phy-6\:3/device_type
end device
$ cat /sys/class/sas_phy/phy-6\:3/target_port_protocols
sata

Also downgrade the phy_list_lock to _irq instead of _irqsave since
libsas will never call sas_get_port_device with interrupts disbled.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Dan Williams 2012-01-28 17:24:40 -08:00 • committed by James Bottomley
commit 899fcf40f3
3 changed files with 27 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

12
drivers/scsi/libsas/sas_discover.c
View file

@ -69,7 +69,6 @@ void sas_init_dev(struct domain_device *dev)
*/
static int sas_get_port_device(struct asd_sas_port *port)
{
unsigned long flags;
struct asd_sas_phy *phy;
struct sas_rphy *rphy;
struct domain_device *dev;
@ -78,9 +77,9 @@ static int sas_get_port_device(struct asd_sas_port *port)
if (!dev)
return -ENOMEM;
spin_lock_irqsave(&port->phy_list_lock, flags);
spin_lock_irq(&port->phy_list_lock);
if (list_empty(&port->phy_list)) {
spin_unlock_irqrestore(&port->phy_list_lock, flags);
spin_unlock_irq(&port->phy_list_lock);
sas_put_device(dev);
return -ENODEV;
}
@ -89,7 +88,7 @@ static int sas_get_port_device(struct asd_sas_port *port)
memcpy(dev->frame_rcvd, phy->frame_rcvd, min(sizeof(dev->frame_rcvd),
(size_t)phy->frame_rcvd_size));
spin_unlock(&phy->frame_rcvd_lock);
spin_unlock_irqrestore(&port->phy_list_lock, flags);
spin_unlock_irq(&port->phy_list_lock);
if (dev->frame_rcvd[0] == 0x34 && port->oob_mode == SATA_OOB_MODE) {
struct dev_to_host_fis *fis =
@ -134,6 +133,11 @@ static int sas_get_port_device(struct asd_sas_port *port)
sas_put_device(dev);
return -ENODEV;
}
spin_lock_irq(&port->phy_list_lock);
list_for_each_entry(phy, &port->phy_list, port_phy_el)
sas_phy_set_target(phy, dev);
spin_unlock_irq(&port->phy_list_lock);
rphy->identify.phy_identifier = phy->phy->identify.phy_identifier;
memcpy(dev->sas_addr, port->attached_sas_addr, SAS_ADDR_SIZE);
sas_fill_in_rphy(dev, rphy);

17
drivers/scsi/libsas/sas_internal.h
View file

@ -30,6 +30,7 @@
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_sas.h>
#include <scsi/libsas.h>
#include <scsi/sas_ata.h>
#define sas_printk(fmt, ...) printk(KERN_NOTICE "sas: " fmt, ## __VA_ARGS__)
@ -147,6 +148,22 @@ static inline void sas_fill_in_rphy(struct domain_device *dev,
}
}
static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_device *dev)
{
struct sas_phy *phy = p->phy;
if (dev) {
if (dev_is_sata(dev))
phy->identify.device_type = SAS_END_DEVICE;
else
phy->identify.device_type = dev->dev_type;
phy->identify.target_port_protocols = dev->tproto;
} else {
phy->identify.device_type = SAS_PHY_UNUSED;
phy->identify.target_port_protocols = 0;
}
}
static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
{
struct expander_device *ex = &dev->ex_dev;

2
drivers/scsi/libsas/sas_port.c
View file

@ -104,6 +104,7 @@ static void sas_form_port(struct asd_sas_phy *phy)
/* add the phy to the port */
list_add_tail(&phy->port_phy_el, &port->phy_list);
sas_phy_set_target(phy, port->port_dev);
phy->port = port;
port->num_phys++;
port->phy_mask |= (1U << phy->id);
@ -182,6 +183,7 @@ void sas_deform_port(struct asd_sas_phy *phy, int gone)
spin_lock(&port->phy_list_lock);
list_del_init(&phy->port_phy_el);
sas_phy_set_target(phy, NULL);
phy->port = NULL;
port->num_phys--;
port->phy_mask &= ~(1U << phy->id);