Description:
Currently if driver see the NVMe drive with "DEVICE_BLOCKED"
AcessStatus in it's PCIe Device Page0 then driver removes the
drive from it's internal list and does not allow any IOCTL
commands to be sent to the drive and will return the IOCTLs
with "-ENODEV" status.
Now driver will allow NVMe Encapsulated IOCTL issued to the
NVMe device with an access status of DEVICE_BLOCKED.
This change allows the user to flash new drive
firmware online and make the drive working.
Implementation:
Add NVMe device only in the driver's internal list even though
the device is in the blocked state so that the device will
be visible to Apps. So that Apps can send NVMe Encapsulated IOCTLs
to this drive and make the drive online. This NVMe drive with
DEVICE_BLOCKED access status won't added to the SML, it will be
added only in the driver's internal list.
Signed-off-by: Suganath Prabu <suganath-prabu.subramani@xxxxxxxxxxxx>
---
drivers/scsi/mpt3sas/mpt3sas_base.h | 2 ++
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 27 +++++++++++++++++++++++++--
2 files changed, 27 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
index 66a68be..5094319 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -583,6 +583,7 @@ static inline void sas_device_put(struct _sas_device *s)
* @enclosure_level: The level of device's enclosure from the controller
* @connector_name: ASCII value of the Connector's name
* @serial_number: pointer of serial number string allocated runtime
+ * @access_status: Device's Access Status
* @refcount: reference count for deletion
*/
struct _pcie_device {
@@ -604,6 +605,7 @@ struct _pcie_device {
u8 connector_name[4];
u8 *serial_number;
u8 reset_timeout;
+ u8 access_status;
struct kref refcount;
};
/**
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index f7610b8..325b5b7 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -1152,6 +1152,11 @@ _scsih_pcie_device_add(struct MPT3SAS_ADAPTER *ioc,
list_add_tail(&pcie_device->list, &ioc->pcie_device_list);
spin_unlock_irqrestore(&ioc->pcie_device_lock, flags);
+ if (pcie_device->access_status ==
+ MPI26_PCIEDEV0_ASTATUS_DEVICE_BLOCKED) {
+ clear_bit(pcie_device->handle, ioc->pend_os_device_add);
+ return;
+ }
if (scsi_add_device(ioc->shost, PCIE_CHANNEL, pcie_device->id, 0)) {
_scsih_pcie_device_remove(ioc, pcie_device);
} else if (!pcie_device->starget) {
@@ -1196,7 +1201,9 @@ _scsih_pcie_device_init_add(struct MPT3SAS_ADAPTER *ioc,
spin_lock_irqsave(&ioc->pcie_device_lock, flags);
pcie_device_get(pcie_device);
list_add_tail(&pcie_device->list, &ioc->pcie_device_init_list);
- _scsih_determine_boot_device(ioc, pcie_device, PCIE_CHANNEL);
+ if (pcie_device->access_status !=
+ MPI26_PCIEDEV0_ASTATUS_DEVICE_BLOCKED)
+ _scsih_determine_boot_device(ioc, pcie_device, PCIE_CHANNEL);
spin_unlock_irqrestore(&ioc->pcie_device_lock, flags);
}
/**
@@ -6548,6 +6555,11 @@ _scsih_check_pcie_access_status(struct MPT3SAS_ADAPTER *ioc, u64 wwid,
break;
case MPI26_PCIEDEV0_ASTATUS_DEVICE_BLOCKED:
desc = "PCIe device blocked";
+ ioc_info(ioc,
+ "Device with Access Status (%s): wwid(0x%016llx), "
+ "handle(0x%04x)\n ll only be added to the internal list",
+ desc, (u64)wwid, handle);
+ rc = 0;
break;
case MPI26_PCIEDEV0_ASTATUS_MEMORY_SPACE_ACCESS_FAILED:
desc = "PCIe device mem space access failed";
@@ -6652,7 +6664,8 @@ _scsih_pcie_device_remove_from_sml(struct MPT3SAS_ADAPTER *ioc,
pcie_device->enclosure_level,
pcie_device->connector_name);
- if (pcie_device->starget)
+ if (pcie_device->starget && (pcie_device->access_status !=
+ MPI26_PCIEDEV0_ASTATUS_DEVICE_BLOCKED))
scsi_remove_target(&pcie_device->starget->dev);
dewtprintk(ioc,
ioc_info(ioc, "%s: exit: handle(0x%04x), wwid(0x%016llx)\n",
@@ -6718,6 +6731,7 @@ _scsih_pcie_check_device(struct MPT3SAS_ADAPTER *ioc, u16 handle)
if (unlikely(pcie_device->handle != handle)) {
starget = pcie_device->starget;
sas_target_priv_data = starget->hostdata;
+ pcie_device->access_status = pcie_device_pg0.AccessStatus;
starget_printk(KERN_INFO, starget,
"handle changed from(0x%04x) to (0x%04x)!!!\n",
pcie_device->handle, handle);
@@ -6859,6 +6873,7 @@ _scsih_pcie_add_device(struct MPT3SAS_ADAPTER *ioc, u16 handle)
pcie_device->id = ioc->pcie_target_id++;
pcie_device->channel = PCIE_CHANNEL;
pcie_device->handle = handle;
+ pcie_device->access_status = pcie_device_pg0.AccessStatus;
pcie_device->device_info = le32_to_cpu(pcie_device_pg0.DeviceInfo);
pcie_device->wwid = wwid;
pcie_device->port_num = pcie_device_pg0.PortNum;
@@ -8531,6 +8546,8 @@ _scsih_mark_responding_pcie_device(struct MPT3SAS_ADAPTER *ioc,
if ((pcie_device->wwid == le64_to_cpu(pcie_device_pg0->WWID))
&& (pcie_device->slot == le16_to_cpu(
pcie_device_pg0->Slot))) {
+ pcie_device->access_status =
+ pcie_device_pg0->AccessStatus;
pcie_device->responding = 1;
starget = pcie_device->starget;
if (starget && starget->hostdata) {
@@ -10063,6 +10080,12 @@ _scsih_probe_pcie(struct MPT3SAS_ADAPTER *ioc)
pcie_device_put(pcie_device);
continue;
}
+ if (pcie_device->access_status ==
+ MPI26_PCIEDEV0_ASTATUS_DEVICE_BLOCKED) {
+ pcie_device_make_active(ioc, pcie_device);
+ pcie_device_put(pcie_device);
+ continue;
+ }
rc = scsi_add_device(ioc->shost, PCIE_CHANNEL,
pcie_device->id, 0);
if (rc) {
--
1.8.3.1
