Issue : Switch swap doesn't work when device missing delay is enabled.
(1) add support to individually add and remove phys to and from
existing ports. This replaces the routine
_transport_delete_duplicate_port.
(2) _scsih_sas_host_refresh - was modified to change the link rate
from zero to 1.5 GB rate when the firmware reports there is an
attached device with zero link.
(3) add new function mpt2sas_device_remove, this is wrapper function
deletes some redundant code through out driver by combining into one
subrountine
(4) two subroutines were modified so the sas_device, raid_device, and
port lists are traversed once when objects are deleted from the list.
Previously it was looping back each time an object was deleted from the
list.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
ulong timeout, struct scsi_cmnd *scmd);
void mpt2sas_scsih_set_tm_flag(struct MPT2SAS_ADAPTER *ioc, u16 handle);
void mpt2sas_scsih_clear_tm_flag(struct MPT2SAS_ADAPTER *ioc, u16 handle);
+void mpt2sas_expander_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address);
+void mpt2sas_device_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address);
struct _sas_node *mpt2sas_scsih_expander_find_by_handle(struct MPT2SAS_ADAPTER *ioc,
u16 handle);
struct _sas_node *mpt2sas_scsih_expander_find_by_sas_address(struct MPT2SAS_ADAPTER
&sas_expander->sas_port_list, port_list) {
if (mpt2sas_port->remote_identify.device_type ==
- MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
+ SAS_EDGE_EXPANDER_DEVICE ||
mpt2sas_port->remote_identify.device_type ==
- MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER) {
+ SAS_FANOUT_EXPANDER_DEVICE) {
spin_lock_irqsave(&ioc->sas_node_lock, flags);
expander_sibling =
Mpi2ConfigReply_t mpi_reply;
Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
u16 attached_handle;
+ u8 link_rate;
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT
"updating handles for sas_host(0x%016llx)\n",
if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
goto out;
for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
+ link_rate = sas_iounit_pg0->PhyData[i].NegotiatedLinkRate >> 4;
if (i == 0)
ioc->sas_hba.handle = le16_to_cpu(sas_iounit_pg0->
PhyData[0].ControllerDevHandle);
ioc->sas_hba.phy[i].handle = ioc->sas_hba.handle;
attached_handle = le16_to_cpu(sas_iounit_pg0->PhyData[i].
AttachedDevHandle);
+ if (attached_handle && link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
+ link_rate = MPI2_SAS_NEG_LINK_RATE_1_5;
mpt2sas_transport_update_links(ioc, ioc->sas_hba.sas_address,
- attached_handle, i, sas_iounit_pg0->PhyData[i].
- NegotiatedLinkRate >> 4);
+ attached_handle, i, link_rate);
}
out:
kfree(sas_iounit_pg0);
}
/**
- * _scsih_expander_remove - removing expander object
+ * mpt2sas_expander_remove - removing expander object
* @ioc: per adapter object
* @sas_address: expander sas_address
*
* Return nothing.
*/
-static void
-_scsih_expander_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address)
+void
+mpt2sas_expander_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address)
{
struct _sas_node *sas_expander;
unsigned long flags;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
sas_address);
+ if (!sas_expander) {
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
+ return;
+ }
+ list_del(&sas_expander->list);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
_scsih_expander_node_remove(ioc, sas_expander);
}
sas_device_backup.sas_address));
}
+/**
+ * mpt2sas_device_remove - removing device object
+ * @ioc: per adapter object
+ * @sas_address: expander sas_address
+ *
+ * Return nothing.
+ */
+void
+mpt2sas_device_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address)
+{
+ struct _sas_device *sas_device;
+ unsigned long flags;
+
+ if (ioc->shost_recovery)
+ return;
+
+ spin_lock_irqsave(&ioc->sas_device_lock, flags);
+ sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
+ sas_address);
+ if (!sas_device) {
+ spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
+ _scsih_remove_device(ioc, sas_device);
+}
+
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
/**
* _scsih_sas_topology_change_event_debug - debug for topology event
/* handle expander removal */
if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING &&
sas_expander)
- _scsih_expander_remove(ioc, sas_address);
+ mpt2sas_expander_remove(ioc, sas_address);
}
sas_expander->responding = 0;
continue;
}
- _scsih_expander_remove(ioc, sas_expander->sas_address);
+ mpt2sas_expander_remove(ioc, sas_expander->sas_address);
goto retry_expander_search;
}
}
_scsih_expander_node_remove(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_expander)
{
- struct _sas_port *mpt2sas_port;
- struct _sas_device *sas_device;
- struct _sas_node *expander_sibling;
- unsigned long flags;
-
- if (!sas_expander)
- return;
+ struct _sas_port *mpt2sas_port, *next;
/* remove sibling ports attached to this expander */
- retry_device_search:
- list_for_each_entry(mpt2sas_port,
- &sas_expander->sas_port_list, port_list) {
- if (mpt2sas_port->remote_identify.device_type ==
- SAS_END_DEVICE) {
- spin_lock_irqsave(&ioc->sas_device_lock, flags);
- sas_device =
- mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
- mpt2sas_port->remote_identify.sas_address);
- spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
- if (!sas_device)
- continue;
- _scsih_remove_device(ioc, sas_device);
- if (ioc->shost_recovery)
- return;
- goto retry_device_search;
- }
- }
-
- retry_expander_search:
- list_for_each_entry(mpt2sas_port,
+ list_for_each_entry_safe(mpt2sas_port, next,
&sas_expander->sas_port_list, port_list) {
-
+ if (ioc->shost_recovery)
+ return;
if (mpt2sas_port->remote_identify.device_type ==
- MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
+ SAS_END_DEVICE)
+ mpt2sas_device_remove(ioc,
+ mpt2sas_port->remote_identify.sas_address);
+ else if (mpt2sas_port->remote_identify.device_type ==
+ SAS_EDGE_EXPANDER_DEVICE ||
mpt2sas_port->remote_identify.device_type ==
- MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER) {
-
- spin_lock_irqsave(&ioc->sas_node_lock, flags);
- expander_sibling =
- mpt2sas_scsih_expander_find_by_sas_address(
- ioc, mpt2sas_port->remote_identify.sas_address);
- spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
- if (!expander_sibling)
- continue;
- _scsih_expander_remove(ioc,
- expander_sibling->sas_address);
- if (ioc->shost_recovery)
- return;
- goto retry_expander_search;
- }
+ SAS_FANOUT_EXPANDER_DEVICE)
+ mpt2sas_expander_remove(ioc,
+ mpt2sas_port->remote_identify.sas_address);
}
mpt2sas_transport_port_remove(ioc, sas_expander->sas_address,
sas_expander->handle, (unsigned long long)
sas_expander->sas_address);
- list_del(&sas_expander->list);
kfree(sas_expander->phy);
kfree(sas_expander);
}
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
- struct _sas_port *mpt2sas_port;
- struct _sas_device *sas_device;
- struct _sas_node *expander_sibling;
+ struct _sas_port *mpt2sas_port, *next_port;
struct _raid_device *raid_device, *next;
struct MPT2SAS_TARGET *sas_target_priv_data;
struct workqueue_struct *wq;
}
/* free ports attached to the sas_host */
- retry_again:
- list_for_each_entry(mpt2sas_port,
+ list_for_each_entry_safe(mpt2sas_port, next_port,
&ioc->sas_hba.sas_port_list, port_list) {
if (mpt2sas_port->remote_identify.device_type ==
- SAS_END_DEVICE) {
- sas_device =
- mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
- mpt2sas_port->remote_identify.sas_address);
- if (sas_device) {
- _scsih_remove_device(ioc, sas_device);
- goto retry_again;
- }
- } else {
- expander_sibling =
- mpt2sas_scsih_expander_find_by_sas_address(ioc,
+ SAS_END_DEVICE)
+ mpt2sas_device_remove(ioc,
+ mpt2sas_port->remote_identify.sas_address);
+ else if (mpt2sas_port->remote_identify.device_type ==
+ SAS_EDGE_EXPANDER_DEVICE ||
+ mpt2sas_port->remote_identify.device_type ==
+ SAS_FANOUT_EXPANDER_DEVICE)
+ mpt2sas_expander_remove(ioc,
mpt2sas_port->remote_identify.sas_address);
- if (expander_sibling) {
- _scsih_expander_remove(ioc,
- expander_sibling->sas_address);
- goto retry_again;
- }
- }
}
/* free phys attached to the sas_host */
return rc;
}
+/**
+ * _transport_delete_port - helper function to removing a port
+ * @ioc: per adapter object
+ * @mpt2sas_port: mpt2sas per port object
+ *
+ * Returns nothing.
+ */
+static void
+_transport_delete_port(struct MPT2SAS_ADAPTER *ioc,
+ struct _sas_port *mpt2sas_port)
+{
+ u64 sas_address = mpt2sas_port->remote_identify.sas_address;
+ enum sas_device_type device_type =
+ mpt2sas_port->remote_identify.device_type;
+
+ dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
+ "remove: sas_addr(0x%016llx)\n",
+ (unsigned long long) sas_address);
+
+ ioc->logging_level |= MPT_DEBUG_TRANSPORT;
+ if (device_type == SAS_END_DEVICE)
+ mpt2sas_device_remove(ioc, sas_address);
+ else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
+ device_type == SAS_FANOUT_EXPANDER_DEVICE)
+ mpt2sas_expander_remove(ioc, sas_address);
+ ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
+}
/**
- * _transport_delete_duplicate_port - (see below description)
+ * _transport_delete_phy - helper function to removing single phy from port
* @ioc: per adapter object
- * @sas_node: sas node object (either expander or sas host)
- * @sas_address: sas address of device being added
- * @phy_num: phy number
+ * @mpt2sas_port: mpt2sas per port object
+ * @mpt2sas_phy: mpt2sas per phy object
*
- * This function is called when attempting to add a new port that is claiming
- * the same phy resources already in use by another port. If we don't release
- * the claimed phy resources, the sas transport layer will hang from the BUG
- * in sas_port_add_phy.
+ * Returns nothing.
+ */
+static void
+_transport_delete_phy(struct MPT2SAS_ADAPTER *ioc,
+ struct _sas_port *mpt2sas_port, struct _sas_phy *mpt2sas_phy)
+{
+ u64 sas_address = mpt2sas_port->remote_identify.sas_address;
+
+ dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
+ "remove: sas_addr(0x%016llx), phy(%d)\n",
+ (unsigned long long) sas_address, mpt2sas_phy->phy_id);
+
+ list_del(&mpt2sas_phy->port_siblings);
+ mpt2sas_port->num_phys--;
+ sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
+ mpt2sas_phy->phy_belongs_to_port = 0;
+}
+
+/**
+ * _transport_add_phy - helper function to adding single phy to port
+ * @ioc: per adapter object
+ * @mpt2sas_port: mpt2sas per port object
+ * @mpt2sas_phy: mpt2sas per phy object
*
- * The reason we would hit this issue is becuase someone is changing the
- * sas address of a device on the fly, meanwhile controller firmware sends
- * EVENTs out of order when removing the previous instance of the device.
+ * Returns nothing.
*/
static void
-_transport_delete_duplicate_port(struct MPT2SAS_ADAPTER *ioc,
- struct _sas_node *sas_node, u64 sas_address, int phy_num)
+_transport_add_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_port *mpt2sas_port,
+ struct _sas_phy *mpt2sas_phy)
{
- struct _sas_port *mpt2sas_port, *mpt2sas_port_duplicate;
- struct _sas_phy *mpt2sas_phy;
+ u64 sas_address = mpt2sas_port->remote_identify.sas_address;
- printk(MPT2SAS_ERR_FMT "new device located at sas_addr(0x%016llx), "
- "phy_id(%d)\n", ioc->name, (unsigned long long)sas_address,
- phy_num);
+ dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
+ "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
+ sas_address, mpt2sas_phy->phy_id);
- mpt2sas_port_duplicate = NULL;
- list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list, port_list) {
- dev_printk(KERN_ERR, &mpt2sas_port->port->dev,
- "existing device at sas_addr(0x%016llx), num_phys(%d)\n",
- (unsigned long long)
- mpt2sas_port->remote_identify.sas_address,
- mpt2sas_port->num_phys);
- list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
+ list_add_tail(&mpt2sas_phy->port_siblings, &mpt2sas_port->phy_list);
+ mpt2sas_port->num_phys++;
+ sas_port_add_phy(mpt2sas_port->port, mpt2sas_phy->phy);
+ mpt2sas_phy->phy_belongs_to_port = 1;
+}
+
+/**
+ * _transport_add_phy_to_an_existing_port - adding new phy to existing port
+ * @ioc: per adapter object
+ * @sas_node: sas node object (either expander or sas host)
+ * @mpt2sas_phy: mpt2sas per phy object
+ * @sas_address: sas address of device/expander were phy needs to be added to
+ *
+ * Returns nothing.
+ */
+static void
+_transport_add_phy_to_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
+struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy, u64 sas_address)
+{
+ struct _sas_port *mpt2sas_port;
+ struct _sas_phy *phy_srch;
+
+ if (mpt2sas_phy->phy_belongs_to_port == 1)
+ return;
+
+ list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list,
+ port_list) {
+ if (mpt2sas_port->remote_identify.sas_address !=
+ sas_address)
+ continue;
+ list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
port_siblings) {
- dev_printk(KERN_ERR, &mpt2sas_phy->phy->dev,
- "phy_number(%d)\n", mpt2sas_phy->phy_id);
- if (mpt2sas_phy->phy_id == phy_num)
- mpt2sas_port_duplicate = mpt2sas_port;
+ if (phy_srch == mpt2sas_phy)
+ return;
}
+ _transport_add_phy(ioc, mpt2sas_port, mpt2sas_phy);
+ return;
}
- if (!mpt2sas_port_duplicate)
+}
+
+/**
+ * _transport_del_phy_from_an_existing_port - delete phy from existing port
+ * @ioc: per adapter object
+ * @sas_node: sas node object (either expander or sas host)
+ * @mpt2sas_phy: mpt2sas per phy object
+ *
+ * Returns nothing.
+ */
+static void
+_transport_del_phy_from_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
+ struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy)
+{
+ struct _sas_port *mpt2sas_port, *next;
+ struct _sas_phy *phy_srch;
+
+ if (mpt2sas_phy->phy_belongs_to_port == 0)
return;
- dev_printk(KERN_ERR, &mpt2sas_port_duplicate->port->dev,
- "deleting duplicate device at sas_addr(0x%016llx), phy(%d)!!!!\n",
- (unsigned long long)
- mpt2sas_port_duplicate->remote_identify.sas_address, phy_num);
- ioc->logging_level |= MPT_DEBUG_TRANSPORT;
- mpt2sas_transport_port_remove(ioc,
- mpt2sas_port_duplicate->remote_identify.sas_address,
- sas_node->sas_address);
- ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
+ list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
+ port_list) {
+ list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
+ port_siblings) {
+ if (phy_srch != mpt2sas_phy)
+ continue;
+ if (mpt2sas_port->num_phys == 1)
+ _transport_delete_port(ioc, mpt2sas_port);
+ else
+ _transport_delete_phy(ioc, mpt2sas_port,
+ mpt2sas_phy);
+ return;
+ }
+ }
}
/**
{
int i;
- for (i = 0; i < sas_node->num_phys; i++)
- if (sas_node->phy[i].remote_identify.sas_address == sas_address)
- if (sas_node->phy[i].phy_belongs_to_port)
- _transport_delete_duplicate_port(ioc, sas_node,
- sas_address, i);
+ for (i = 0; i < sas_node->num_phys; i++) {
+ if (sas_node->phy[i].remote_identify.sas_address != sas_address)
+ continue;
+ if (sas_node->phy[i].phy_belongs_to_port == 1)
+ _transport_del_phy_from_an_existing_port(ioc, sas_node,
+ &sas_node->phy[i]);
+ }
}
/**
mpt2sas_phy = &sas_node->phy[phy_number];
mpt2sas_phy->attached_handle = handle;
- if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5))
+ if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
_transport_set_identify(ioc, handle,
&mpt2sas_phy->remote_identify);
- else
+ _transport_add_phy_to_an_existing_port(ioc, sas_node,
+ mpt2sas_phy, mpt2sas_phy->remote_identify.sas_address);
+ } else
memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
sas_identify));
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff