Register/unregister the SAS, SATA devices to
SCSI Transport Layer(STL) whenever the corresponding device
is added/removed from topology.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
---
drivers/scsi/mpi3mr/mpi3mr.h | 10 ++
drivers/scsi/mpi3mr/mpi3mr_os.c | 84 ++++++++++---
drivers/scsi/mpi3mr/mpi3mr_transport.c | 158 +++++++++++++++++++++++++
3 files changed, 235 insertions(+), 17 deletions(-)
diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h
index a91a57b..21ea021 100644
--- a/drivers/scsi/mpi3mr/mpi3mr.h
+++ b/drivers/scsi/mpi3mr/mpi3mr.h
@@ -569,7 +569,10 @@ struct mpi3mr_enclosure_node {
* information cached from firmware given data
*
* @sas_address: World wide unique SAS address
+ * @sas_address_parent: Sas address of parent expander or host
* @dev_info: Device information bits
+ * @phy_id: Phy identifier provided in device page 0
+ * @attached_phy_id: Attached phy identifier provided in device page 0
* @sas_transport_attached: Is this device exposed to transport
* @pend_sas_rphy_add: Flag to check device is in process of add
* @hba_port: HBA port entry
@@ -577,7 +580,10 @@ struct mpi3mr_enclosure_node {
*/
struct tgt_dev_sas_sata {
u64 sas_address;
+ u64 sas_address_parent;
u16 dev_info;
+ u8 phy_id;
+ u8 attached_phy_id;
u8 sas_transport_attached;
u8 pend_sas_rphy_add;
struct mpi3mr_hba_port *hba_port;
@@ -1357,6 +1363,10 @@ void mpi3mr_update_links(struct mpi3mr_ioc *mrioc,
struct mpi3mr_hba_port *hba_port);
void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc,
struct mpi3mr_tgt_dev *tgtdev);
+int mpi3mr_report_tgtdev_to_sas_transport(struct mpi3mr_ioc *mrioc,
+ struct mpi3mr_tgt_dev *tgtdev);
+void mpi3mr_remove_tgtdev_from_sas_transport(struct mpi3mr_ioc *mrioc,
+ struct mpi3mr_tgt_dev *tgtdev);
struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_addr_and_rphy(
struct mpi3mr_ioc *mrioc, u64 sas_address, struct sas_rphy *rphy);
void mpi3mr_print_device_event_notice(struct mpi3mr_ioc *mrioc,
diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index aed9b60..8b1b912 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -836,19 +836,25 @@ void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc,
tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
}
- if (tgtdev->starget) {
- if (mrioc->current_event)
- mrioc->current_event->pending_at_sml = 1;
- scsi_remove_target(&tgtdev->starget->dev);
- tgtdev->host_exposed = 0;
- if (mrioc->current_event) {
- mrioc->current_event->pending_at_sml = 0;
- if (mrioc->current_event->discard) {
- mpi3mr_print_device_event_notice(mrioc, false);
- return;
+ if (!mrioc->sas_transport_enabled || (tgtdev->dev_type !=
+ MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl) {
+ if (tgtdev->starget) {
+ if (mrioc->current_event)
+ mrioc->current_event->pending_at_sml = 1;
+ scsi_remove_target(&tgtdev->starget->dev);
+ tgtdev->host_exposed = 0;
+ if (mrioc->current_event) {
+ mrioc->current_event->pending_at_sml = 0;
+ if (mrioc->current_event->discard) {
+ mpi3mr_print_device_event_notice(mrioc,
+ false);
+ return;
+ }
}
}
- }
+ } else
+ mpi3mr_remove_tgtdev_from_sas_transport(mrioc, tgtdev);
+
ioc_info(mrioc, "%s :Removed handle(0x%04x), wwid(0x%016llx)\n",
__func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
}
@@ -870,21 +876,25 @@ static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
int retval = 0;
struct mpi3mr_tgt_dev *tgtdev;
+ if (mrioc->reset_in_progress)
+ return -1;
+
tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
if (!tgtdev) {
retval = -1;
goto out;
}
- if (tgtdev->is_hidden) {
+ if (tgtdev->is_hidden || tgtdev->host_exposed) {
retval = -1;
goto out;
}
- if (!tgtdev->host_exposed && !mrioc->reset_in_progress) {
+ if (!mrioc->sas_transport_enabled || (tgtdev->dev_type !=
+ MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl){
tgtdev->host_exposed = 1;
if (mrioc->current_event)
mrioc->current_event->pending_at_sml = 1;
- scsi_scan_target(&mrioc->shost->shost_gendev, 0,
- tgtdev->perst_id,
+ scsi_scan_target(&mrioc->shost->shost_gendev,
+ mrioc->scsi_device_channel, tgtdev->perst_id,
SCAN_WILD_CARD, SCSI_SCAN_INITIAL);
if (!tgtdev->starget)
tgtdev->host_exposed = 0;
@@ -895,7 +905,8 @@ static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
goto out;
}
}
- }
+ } else
+ mpi3mr_report_tgtdev_to_sas_transport(mrioc, tgtdev);
out:
if (tgtdev)
mpi3mr_tgtdev_put(tgtdev);
@@ -1087,6 +1098,9 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
tgtdev->dev_spec.sas_sata_inf.dev_info = dev_info;
tgtdev->dev_spec.sas_sata_inf.sas_address =
le64_to_cpu(sasinf->sas_address);
+ tgtdev->dev_spec.sas_sata_inf.phy_id = sasinf->phy_num;
+ tgtdev->dev_spec.sas_sata_inf.attached_phy_id =
+ sasinf->attached_phy_identifier;
if ((dev_info & MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_MASK) !=
MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_END_DEVICE)
tgtdev->is_hidden = 1;
@@ -1494,12 +1508,30 @@ static void mpi3mr_sastopochg_evt_bh(struct mpi3mr_ioc *mrioc,
int i;
u16 handle;
u8 reason_code;
- u64 exp_sas_address = 0;
+ u64 exp_sas_address = 0, parent_sas_address = 0;
struct mpi3mr_hba_port *hba_port = NULL;
struct mpi3mr_tgt_dev *tgtdev = NULL;
struct mpi3mr_sas_node *sas_expander = NULL;
+ unsigned long flags;
+ u8 link_rate, prev_link_rate, parent_phy_number;
mpi3mr_sastopochg_evt_debug(mrioc, event_data);
+ if (mrioc->sas_transport_enabled) {
+ hba_port = mpi3mr_get_hba_port_by_id(mrioc,
+ event_data->io_unit_port);
+ if (le16_to_cpu(event_data->expander_dev_handle)) {
+ spin_lock_irqsave(&mrioc->sas_node_lock, flags);
+ sas_expander = __mpi3mr_expander_find_by_handle(mrioc,
+ le16_to_cpu(event_data->expander_dev_handle));
+ if (sas_expander) {
+ exp_sas_address = sas_expander->sas_address;
+ hba_port = sas_expander->hba_port;
+ }
+ spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
+ parent_sas_address = exp_sas_address;
+ } else
+ parent_sas_address = mrioc->sas_hba.sas_address;
+ }
for (i = 0; i < event_data->num_entries; i++) {
if (fwevt->discard)
@@ -1521,6 +1553,24 @@ static void mpi3mr_sastopochg_evt_bh(struct mpi3mr_ioc *mrioc,
mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
mpi3mr_tgtdev_put(tgtdev);
break;
+ case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
+ case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
+ case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE:
+ {
+ if (!mrioc->sas_transport_enabled || tgtdev->non_stl
+ || tgtdev->is_hidden)
+ break;
+ link_rate = event_data->phy_entry[i].link_rate >> 4;
+ prev_link_rate = event_data->phy_entry[i].link_rate & 0xF;
+ if (link_rate == prev_link_rate)
+ break;
+ if (!parent_sas_address)
+ break;
+ parent_phy_number = event_data->start_phy_num + i;
+ mpi3mr_update_links(mrioc, parent_sas_address, handle,
+ parent_phy_number, link_rate, hba_port);
+ break;
+ }
default:
break;
}
diff --git a/drivers/scsi/mpi3mr/mpi3mr_transport.c b/drivers/scsi/mpi3mr/mpi3mr_transport.c
index 48cee03..706c6e6 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_transport.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_transport.c
@@ -1652,3 +1652,161 @@ void mpi3mr_expander_remove(struct mpi3mr_ioc *mrioc, u64 sas_address,
mpi3mr_expander_node_remove(mrioc, sas_expander);
}
+
+/**
+ * mpi3mr_get_sas_negotiated_logical_linkrate - get linkrate
+ * @mrioc: Adapter instance reference
+ * @tgtdev: Target device
+ *
+ * This function identifies whether the target device is
+ * attached directly or through expander and issues sas phy
+ * page0 or expander phy page1 and gets the link rate, if there
+ * is any failure in reading the pages then this returns link
+ * rate of 1.5.
+ *
+ * Return: logical link rate.
+ */
+static u8 mpi3mr_get_sas_negotiated_logical_linkrate(struct mpi3mr_ioc *mrioc,
+ struct mpi3mr_tgt_dev *tgtdev)
+{
+ u8 link_rate = MPI3_SAS_NEG_LINK_RATE_1_5, phy_number;
+ struct mpi3_sas_expander_page1 expander_pg1;
+ struct mpi3_sas_phy_page0 phy_pg0;
+ u32 phynum_handle;
+ u16 ioc_status;
+
+ phy_number = tgtdev->dev_spec.sas_sata_inf.phy_id;
+ if (!(tgtdev->devpg0_flag & MPI3_DEVICE0_FLAGS_ATT_METHOD_DIR_ATTACHED)) {
+ phynum_handle = ((phy_number<<MPI3_SAS_EXPAND_PGAD_PHYNUM_SHIFT)
+ | tgtdev->parent_handle);
+ if (mpi3mr_cfg_get_sas_exp_pg1(mrioc, &ioc_status,
+ &expander_pg1, sizeof(expander_pg1),
+ MPI3_SAS_EXPAND_PGAD_FORM_HANDLE_PHY_NUM,
+ phynum_handle)) {
+ ioc_err(mrioc, "failure at %s:%d/%s()!\n",
+ __FILE__, __LINE__, __func__);
+ goto out;
+ }
+ if (ioc_status != MPI3_IOCSTATUS_SUCCESS) {
+ ioc_err(mrioc, "failure at %s:%d/%s()!\n",
+ __FILE__, __LINE__, __func__);
+ goto out;
+ }
+ link_rate = (expander_pg1.negotiated_link_rate &
+ MPI3_SAS_NEG_LINK_RATE_LOGICAL_MASK) >>
+ MPI3_SAS_NEG_LINK_RATE_LOGICAL_SHIFT;
+ goto out;
+ }
+ if (mpi3mr_cfg_get_sas_phy_pg0(mrioc, &ioc_status, &phy_pg0,
+ sizeof(struct mpi3_sas_phy_page0),
+ MPI3_SAS_PHY_PGAD_FORM_PHY_NUMBER, phy_number)) {
+ ioc_err(mrioc, "failure at %s:%d/%s()!\n",
+ __FILE__, __LINE__, __func__);
+ goto out;
+ }
+ if (ioc_status != MPI3_IOCSTATUS_SUCCESS) {
+ ioc_err(mrioc, "failure at %s:%d/%s()!\n",
+ __FILE__, __LINE__, __func__);
+ goto out;
+ }
+ link_rate = (phy_pg0.negotiated_link_rate &
+ MPI3_SAS_NEG_LINK_RATE_LOGICAL_MASK) >>
+ MPI3_SAS_NEG_LINK_RATE_LOGICAL_SHIFT;
+out:
+ return link_rate;
+}
+
+/**
+ * mpi3mr_report_tgtdev_to_sas_transport - expose dev to SAS TL
+ * @mrioc: Adapter instance reference
+ * @tgtdev: Target device
+ *
+ * This function exposes the target device after
+ * preparing host_phy, setting up link rate etc.
+ *
+ * Return: 0 on success, non-zero for failure.
+ */
+int mpi3mr_report_tgtdev_to_sas_transport(struct mpi3mr_ioc *mrioc,
+ struct mpi3mr_tgt_dev *tgtdev)
+{
+ int retval = 0;
+ u8 link_rate, parent_phy_number;
+ u64 sas_address_parent, sas_address;
+ struct mpi3mr_hba_port *hba_port;
+ u8 port_id;
+
+ if ((tgtdev->dev_type != MPI3_DEVICE_DEVFORM_SAS_SATA) ||
+ !mrioc->sas_transport_enabled)
+ return -1;
+
+ sas_address = tgtdev->dev_spec.sas_sata_inf.sas_address;
+ if (!mrioc->sas_hba.num_phys)
+ mpi3mr_sas_host_add(mrioc);
+ else
+ mpi3mr_sas_host_refresh(mrioc);
+
+ if (mpi3mr_get_sas_address(mrioc, tgtdev->parent_handle,
+ &sas_address_parent) != 0) {
+ ioc_err(mrioc, "failure at %s:%d/%s()!\n",
+ __FILE__, __LINE__, __func__);
+ return -1;
+ }
+ tgtdev->dev_spec.sas_sata_inf.sas_address_parent = sas_address_parent;
+
+ parent_phy_number = tgtdev->dev_spec.sas_sata_inf.phy_id;
+ port_id = tgtdev->io_unit_port;
+
+ hba_port = mpi3mr_get_hba_port_by_id(mrioc, port_id);
+ if (!hba_port) {
+ ioc_err(mrioc, "failure at %s:%d/%s()!\n",
+ __FILE__, __LINE__, __func__);
+ return -1;
+ }
+ tgtdev->dev_spec.sas_sata_inf.hba_port = hba_port;
+
+ link_rate = mpi3mr_get_sas_negotiated_logical_linkrate(mrioc, tgtdev);
+
+ mpi3mr_update_links(mrioc, sas_address_parent, tgtdev->dev_handle,
+ parent_phy_number, link_rate, hba_port);
+
+ tgtdev->host_exposed = 1;
+ if (!mpi3mr_sas_port_add(mrioc, tgtdev->dev_handle,
+ sas_address_parent, hba_port)) {
+ tgtdev->host_exposed = 0;
+ retval = -1;
+ } else if ((!tgtdev->starget)) {
+ if (!mrioc->is_driver_loading)
+ mpi3mr_sas_port_remove(mrioc, sas_address,
+ sas_address_parent, hba_port);
+ tgtdev->host_exposed = 0;
+ retval = -1;
+ }
+ return retval;
+}
+
+/**
+ * mpi3mr_remove_tgtdev_from_sas_transport - remove from SAS TL
+ * @mrioc: Adapter instance reference
+ * @tgtdev: Target device
+ *
+ * This function removes the target device
+ *
+ * Return: None.
+ */
+void mpi3mr_remove_tgtdev_from_sas_transport(struct mpi3mr_ioc *mrioc,
+ struct mpi3mr_tgt_dev *tgtdev)
+{
+ u64 sas_address_parent, sas_address;
+ struct mpi3mr_hba_port *hba_port;
+
+ if ((tgtdev->dev_type != MPI3_DEVICE_DEVFORM_SAS_SATA) ||
+ !mrioc->sas_transport_enabled)
+ return;
+
+ hba_port = tgtdev->dev_spec.sas_sata_inf.hba_port;
+ sas_address = tgtdev->dev_spec.sas_sata_inf.sas_address;
+ sas_address_parent = tgtdev->dev_spec.sas_sata_inf.sas_address_parent;
+ mpi3mr_sas_port_remove(mrioc, sas_address, sas_address_parent,
+ hba_port);
+ tgtdev->host_exposed = 0;
+}
--
2.27.0
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