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09da0b32d0
linux_dsm_epyc7002/drivers/scsi/mpt2sas/mpt2sas_scsih.c
nagalakshmi.nandigama@lsi.com 09da0b32d0 [SCSI] mpt2sas: Improvement were made to better protect the sas_device, raid_device, and expander_device lists 
There were possible race conditions surrounding reading an object
from the link list while from another context in the driver was
removing it. The nature of this enhancement is to rearrange locking
so the link lists are better protected.

Change set:
(1) numerous routines were rearranged so spin locks are held through
the entire time a link list object is being read from or written to.
(2) added new routines for object deletion from link list.  Thus ensuring
lock was held during the deletion of the link list object, then and memory
for object freed outside the lock. The memory was freed outside the lock
so driver had access to device object info which was required for
notifying the scsi mid layer that a device was getting deleted.
(3) added the ioc->blocking_handles parameter.  This is a bitmask used
to identify which devices need blocking when there is device loss.  This was
introduced so that lock can be held for the entire time traversing the link
list objects, and the bitmask was set to indicate which device handles need
blocking. Oustide the lock the ioc->blocking_handles bitmask is traversed,
with the respective device handle the scsi mid layer is called for moving
devices into blocking state.

Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:27:15 +01:00

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/*
* Scsi Host Layer for MPT (Message Passing Technology) based controllers
*
* This code is based on drivers/scsi/mpt2sas/mpt2_scsih.c
* Copyright (C) 2007-2010 LSI Corporation
* (mailto:DL-MPTFusionLinux@lsi.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* NO WARRANTY
* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
* solely responsible for determining the appropriateness of using and
* distributing the Program and assumes all risks associated with its
* exercise of rights under this Agreement, including but not limited to
* the risks and costs of program errors, damage to or loss of data,
* programs or equipment, and unavailability or interruption of operations.
* DISCLAIMER OF LIABILITY
* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/blkdev.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/aer.h>
#include <linux/raid_class.h>
#include <linux/slab.h>
#include "mpt2sas_base.h"
MODULE_AUTHOR(MPT2SAS_AUTHOR);
MODULE_DESCRIPTION(MPT2SAS_DESCRIPTION);
MODULE_LICENSE("GPL");
MODULE_VERSION(MPT2SAS_DRIVER_VERSION);
#define RAID_CHANNEL 1
/* forward proto's */
static void _scsih_expander_node_remove(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_expander);
static void _firmware_event_work(struct work_struct *work);
static u8 _scsih_check_for_pending_tm(struct MPT2SAS_ADAPTER *ioc, u16 smid);
static void _scsih_scan_start(struct Scsi_Host *shost);
static int _scsih_scan_finished(struct Scsi_Host *shost, unsigned long time);
/* global parameters */
LIST_HEAD(mpt2sas_ioc_list);
/* local parameters */
static u8 scsi_io_cb_idx = -1;
static u8 tm_cb_idx = -1;
static u8 ctl_cb_idx = -1;
static u8 base_cb_idx = -1;
static u8 port_enable_cb_idx = -1;
static u8 transport_cb_idx = -1;
static u8 scsih_cb_idx = -1;
static u8 config_cb_idx = -1;
static int mpt_ids;
static u8 tm_tr_cb_idx = -1 ;
static u8 tm_tr_volume_cb_idx = -1 ;
static u8 tm_sas_control_cb_idx = -1;
/* command line options */
static u32 logging_level;
MODULE_PARM_DESC(logging_level, " bits for enabling additional logging info "
"(default=0)");
static ushort max_sectors = 0xFFFF;
module_param(max_sectors, ushort, 0);
MODULE_PARM_DESC(max_sectors, "max sectors, range 64 to 32767 default=32767");
/* scsi-mid layer global parmeter is max_report_luns, which is 511 */
#define MPT2SAS_MAX_LUN (16895)
static int max_lun = MPT2SAS_MAX_LUN;
module_param(max_lun, int, 0);
MODULE_PARM_DESC(max_lun, " max lun, default=16895 ");
/* diag_buffer_enable is bitwise
* bit 0 set = TRACE
* bit 1 set = SNAPSHOT
* bit 2 set = EXTENDED
*
* Either bit can be set, or both
*/
static int diag_buffer_enable = -1;
module_param(diag_buffer_enable, int, 0);
MODULE_PARM_DESC(diag_buffer_enable, " post diag buffers "
"(TRACE=1/SNAPSHOT=2/EXTENDED=4/default=0)");
/**
* struct sense_info - common structure for obtaining sense keys
* @skey: sense key
* @asc: additional sense code
* @ascq: additional sense code qualifier
*/
struct sense_info {
u8 skey;
u8 asc;
u8 ascq;
};
#define MPT2SAS_TURN_ON_FAULT_LED (0xFFFC)
#define MPT2SAS_PORT_ENABLE_COMPLETE (0xFFFD)
#define MPT2SAS_REMOVE_UNRESPONDING_DEVICES (0xFFFF)
/**
* struct fw_event_work - firmware event struct
* @list: link list framework
* @work: work object (ioc->fault_reset_work_q)
* @cancel_pending_work: flag set during reset handling
* @ioc: per adapter object
* @device_handle: device handle
* @VF_ID: virtual function id
* @VP_ID: virtual port id
* @ignore: flag meaning this event has been marked to ignore
* @event: firmware event MPI2_EVENT_XXX defined in mpt2_ioc.h
* @event_data: reply event data payload follows
*
* This object stored on ioc->fw_event_list.
*/
struct fw_event_work {
struct list_head list;
u8 cancel_pending_work;
struct delayed_work delayed_work;
struct MPT2SAS_ADAPTER *ioc;
u16 device_handle;
u8 VF_ID;
u8 VP_ID;
u8 ignore;
u16 event;
void *event_data;
};
/* raid transport support */
static struct raid_template *mpt2sas_raid_template;
/**
* struct _scsi_io_transfer - scsi io transfer
* @handle: sas device handle (assigned by firmware)
* @is_raid: flag set for hidden raid components
* @dir: DMA_TO_DEVICE, DMA_FROM_DEVICE,
* @data_length: data transfer length
* @data_dma: dma pointer to data
* @sense: sense data
* @lun: lun number
* @cdb_length: cdb length
* @cdb: cdb contents
* @timeout: timeout for this command
* @VF_ID: virtual function id
* @VP_ID: virtual port id
* @valid_reply: flag set for reply message
* @sense_length: sense length
* @ioc_status: ioc status
* @scsi_state: scsi state
* @scsi_status: scsi staus
* @log_info: log information
* @transfer_length: data length transfer when there is a reply message
*
* Used for sending internal scsi commands to devices within this module.
* Refer to _scsi_send_scsi_io().
*/
struct _scsi_io_transfer {
u16 handle;
u8 is_raid;
enum dma_data_direction dir;
u32 data_length;
dma_addr_t data_dma;
u8 sense[SCSI_SENSE_BUFFERSIZE];
u32 lun;
u8 cdb_length;
u8 cdb[32];
u8 timeout;
u8 VF_ID;
u8 VP_ID;
u8 valid_reply;
/* the following bits are only valid when 'valid_reply = 1' */
u32 sense_length;
u16 ioc_status;
u8 scsi_state;
u8 scsi_status;
u32 log_info;
u32 transfer_length;
};
/*
* The pci device ids are defined in mpi/mpi2_cnfg.h.
*/
static struct pci_device_id scsih_pci_table[] = {
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2004,
PCI_ANY_ID, PCI_ANY_ID },
/* Falcon ~ 2008*/
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2008,
PCI_ANY_ID, PCI_ANY_ID },
/* Liberator ~ 2108 */
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_1,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_2,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2108_3,
PCI_ANY_ID, PCI_ANY_ID },
/* Meteor ~ 2116 */
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_1,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2116_2,
PCI_ANY_ID, PCI_ANY_ID },
/* Thunderbolt ~ 2208 */
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_1,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_2,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_3,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_4,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_5,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2208_6,
PCI_ANY_ID, PCI_ANY_ID },
/* Mustang ~ 2308 */
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_1,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_2,
PCI_ANY_ID, PCI_ANY_ID },
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SAS2308_3,
PCI_ANY_ID, PCI_ANY_ID },
/* SSS6200 */
{ MPI2_MFGPAGE_VENDORID_LSI, MPI2_MFGPAGE_DEVID_SSS6200,
PCI_ANY_ID, PCI_ANY_ID },
{0} /* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, scsih_pci_table);
/**
* _scsih_set_debug_level - global setting of ioc->logging_level.
*
* Note: The logging levels are defined in mpt2sas_debug.h.
*/
static int
_scsih_set_debug_level(const char *val, struct kernel_param *kp)
{
int ret = param_set_int(val, kp);
struct MPT2SAS_ADAPTER *ioc;
if (ret)
return ret;
printk(KERN_INFO "setting logging_level(0x%08x)\n", logging_level);
list_for_each_entry(ioc, &mpt2sas_ioc_list, list)
ioc->logging_level = logging_level;
return 0;
}
module_param_call(logging_level, _scsih_set_debug_level, param_get_int,
&logging_level, 0644);
/**
* _scsih_srch_boot_sas_address - search based on sas_address
* @sas_address: sas address
* @boot_device: boot device object from bios page 2
*
* Returns 1 when there's a match, 0 means no match.
*/
static inline int
_scsih_srch_boot_sas_address(u64 sas_address,
Mpi2BootDeviceSasWwid_t *boot_device)
{
return (sas_address == le64_to_cpu(boot_device->SASAddress)) ? 1 : 0;
}
/**
* _scsih_srch_boot_device_name - search based on device name
* @device_name: device name specified in INDENTIFY fram
* @boot_device: boot device object from bios page 2
*
* Returns 1 when there's a match, 0 means no match.
*/
static inline int
_scsih_srch_boot_device_name(u64 device_name,
Mpi2BootDeviceDeviceName_t *boot_device)
{
return (device_name == le64_to_cpu(boot_device->DeviceName)) ? 1 : 0;
}
/**
* _scsih_srch_boot_encl_slot - search based on enclosure_logical_id/slot
* @enclosure_logical_id: enclosure logical id
* @slot_number: slot number
* @boot_device: boot device object from bios page 2
*
* Returns 1 when there's a match, 0 means no match.
*/
static inline int
_scsih_srch_boot_encl_slot(u64 enclosure_logical_id, u16 slot_number,
Mpi2BootDeviceEnclosureSlot_t *boot_device)
{
return (enclosure_logical_id == le64_to_cpu(boot_device->
EnclosureLogicalID) && slot_number == le16_to_cpu(boot_device->
SlotNumber)) ? 1 : 0;
}
/**
* _scsih_is_boot_device - search for matching boot device.
* @sas_address: sas address
* @device_name: device name specified in INDENTIFY fram
* @enclosure_logical_id: enclosure logical id
* @slot_number: slot number
* @form: specifies boot device form
* @boot_device: boot device object from bios page 2
*
* Returns 1 when there's a match, 0 means no match.
*/
static int
_scsih_is_boot_device(u64 sas_address, u64 device_name,
u64 enclosure_logical_id, u16 slot, u8 form,
Mpi2BiosPage2BootDevice_t *boot_device)
{
int rc = 0;
switch (form) {
case MPI2_BIOSPAGE2_FORM_SAS_WWID:
if (!sas_address)
break;
rc = _scsih_srch_boot_sas_address(
sas_address, &boot_device->SasWwid);
break;
case MPI2_BIOSPAGE2_FORM_ENCLOSURE_SLOT:
if (!enclosure_logical_id)
break;
rc = _scsih_srch_boot_encl_slot(
enclosure_logical_id,
slot, &boot_device->EnclosureSlot);
break;
case MPI2_BIOSPAGE2_FORM_DEVICE_NAME:
if (!device_name)
break;
rc = _scsih_srch_boot_device_name(
device_name, &boot_device->DeviceName);
break;
case MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED:
break;
}
return rc;
}
/**
* _scsih_get_sas_address - set the sas_address for given device handle
* @handle: device handle
* @sas_address: sas address
*
* Returns 0 success, non-zero when failure
*/
static int
_scsih_get_sas_address(struct MPT2SAS_ADAPTER *ioc, u16 handle,
u64 *sas_address)
{
Mpi2SasDevicePage0_t sas_device_pg0;
Mpi2ConfigReply_t mpi_reply;
u32 ioc_status;
*sas_address = 0;
if (handle <= ioc->sas_hba.num_phys) {
*sas_address = ioc->sas_hba.sas_address;
return 0;
}
if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n", ioc->name,
__FILE__, __LINE__, __func__);
return -ENXIO;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
*sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
return 0;
}
/* we hit this becuase the given parent handle doesn't exist */
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
return -ENXIO;
/* else error case */
printk(MPT2SAS_ERR_FMT "handle(0x%04x), ioc_status(0x%04x), "
"failure at %s:%d/%s()!\n", ioc->name, handle, ioc_status,
__FILE__, __LINE__, __func__);
return -EIO;
}
/**
* _scsih_determine_boot_device - determine boot device.
* @ioc: per adapter object
* @device: either sas_device or raid_device object
* @is_raid: [flag] 1 = raid object, 0 = sas object
*
* Determines whether this device should be first reported device to
* to scsi-ml or sas transport, this purpose is for persistent boot device.
* There are primary, alternate, and current entries in bios page 2. The order
* priority is primary, alternate, then current. This routine saves
* the corresponding device object and is_raid flag in the ioc object.
* The saved data to be used later in _scsih_probe_boot_devices().
*/
static void
_scsih_determine_boot_device(struct MPT2SAS_ADAPTER *ioc,
void *device, u8 is_raid)
{
struct _sas_device *sas_device;
struct _raid_device *raid_device;
u64 sas_address;
u64 device_name;
u64 enclosure_logical_id;
u16 slot;
/* only process this function when driver loads */
if (!ioc->is_driver_loading)
return;
/* no Bios, return immediately */
if (!ioc->bios_pg3.BiosVersion)
return;
if (!is_raid) {
sas_device = device;
sas_address = sas_device->sas_address;
device_name = sas_device->device_name;
enclosure_logical_id = sas_device->enclosure_logical_id;
slot = sas_device->slot;
} else {
raid_device = device;
sas_address = raid_device->wwid;
device_name = 0;
enclosure_logical_id = 0;
slot = 0;
}
if (!ioc->req_boot_device.device) {
if (_scsih_is_boot_device(sas_address, device_name,
enclosure_logical_id, slot,
(ioc->bios_pg2.ReqBootDeviceForm &
MPI2_BIOSPAGE2_FORM_MASK),
&ioc->bios_pg2.RequestedBootDevice)) {
dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
"%s: req_boot_device(0x%016llx)\n",
ioc->name, __func__,
(unsigned long long)sas_address));
ioc->req_boot_device.device = device;
ioc->req_boot_device.is_raid = is_raid;
}
}
if (!ioc->req_alt_boot_device.device) {
if (_scsih_is_boot_device(sas_address, device_name,
enclosure_logical_id, slot,
(ioc->bios_pg2.ReqAltBootDeviceForm &
MPI2_BIOSPAGE2_FORM_MASK),
&ioc->bios_pg2.RequestedAltBootDevice)) {
dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
"%s: req_alt_boot_device(0x%016llx)\n",
ioc->name, __func__,
(unsigned long long)sas_address));
ioc->req_alt_boot_device.device = device;
ioc->req_alt_boot_device.is_raid = is_raid;
}
}
if (!ioc->current_boot_device.device) {
if (_scsih_is_boot_device(sas_address, device_name,
enclosure_logical_id, slot,
(ioc->bios_pg2.CurrentBootDeviceForm &
MPI2_BIOSPAGE2_FORM_MASK),
&ioc->bios_pg2.CurrentBootDevice)) {
dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
"%s: current_boot_device(0x%016llx)\n",
ioc->name, __func__,
(unsigned long long)sas_address));
ioc->current_boot_device.device = device;
ioc->current_boot_device.is_raid = is_raid;
}
}
}
/**
* mpt2sas_scsih_sas_device_find_by_sas_address - sas device search
* @ioc: per adapter object
* @sas_address: sas address
* Context: Calling function should acquire ioc->sas_device_lock
*
* This searches for sas_device based on sas_address, then return sas_device
* object.
*/
struct _sas_device *
mpt2sas_scsih_sas_device_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc,
u64 sas_address)
{
struct _sas_device *sas_device;
list_for_each_entry(sas_device, &ioc->sas_device_list, list)
if (sas_device->sas_address == sas_address)
return sas_device;
list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
if (sas_device->sas_address == sas_address)
return sas_device;
return NULL;
}
/**
* _scsih_sas_device_find_by_handle - sas device search
* @ioc: per adapter object
* @handle: sas device handle (assigned by firmware)
* Context: Calling function should acquire ioc->sas_device_lock
*
* This searches for sas_device based on sas_address, then return sas_device
* object.
*/
static struct _sas_device *
_scsih_sas_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct _sas_device *sas_device;
list_for_each_entry(sas_device, &ioc->sas_device_list, list)
if (sas_device->handle == handle)
return sas_device;
list_for_each_entry(sas_device, &ioc->sas_device_init_list, list)
if (sas_device->handle == handle)
return sas_device;
return NULL;
}
/**
* _scsih_sas_device_remove - remove sas_device from list.
* @ioc: per adapter object
* @sas_device: the sas_device object
* Context: This function will acquire ioc->sas_device_lock.
*
* Removing object and freeing associated memory from the ioc->sas_device_list.
*/
static void
_scsih_sas_device_remove(struct MPT2SAS_ADAPTER *ioc,
struct _sas_device *sas_device)
{
unsigned long flags;
if (!sas_device)
return;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
list_del(&sas_device->list);
kfree(sas_device);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
/**
* _scsih_sas_device_add - insert sas_device to the list.
* @ioc: per adapter object
* @sas_device: the sas_device object
* Context: This function will acquire ioc->sas_device_lock.
*
* Adding new object to the ioc->sas_device_list.
*/
static void
_scsih_sas_device_add(struct MPT2SAS_ADAPTER *ioc,
struct _sas_device *sas_device)
{
unsigned long flags;
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: handle"
"(0x%04x), sas_addr(0x%016llx)\n", ioc->name, __func__,
sas_device->handle, (unsigned long long)sas_device->sas_address));
spin_lock_irqsave(&ioc->sas_device_lock, flags);
list_add_tail(&sas_device->list, &ioc->sas_device_list);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (!mpt2sas_transport_port_add(ioc, sas_device->handle,
sas_device->sas_address_parent)) {
_scsih_sas_device_remove(ioc, sas_device);
} else if (!sas_device->starget) {
/* When asyn scanning is enabled, its not possible to remove
* devices while scanning is turned on due to an oops in
* scsi_sysfs_add_sdev()->add_device()->sysfs_addrm_start()
*/
if (!ioc->is_driver_loading)
mpt2sas_transport_port_remove(ioc,
sas_device->sas_address,
sas_device->sas_address_parent);
_scsih_sas_device_remove(ioc, sas_device);
}
}
/**
* _scsih_sas_device_init_add - insert sas_device to the list.
* @ioc: per adapter object
* @sas_device: the sas_device object
* Context: This function will acquire ioc->sas_device_lock.
*
* Adding new object at driver load time to the ioc->sas_device_init_list.
*/
static void
_scsih_sas_device_init_add(struct MPT2SAS_ADAPTER *ioc,
struct _sas_device *sas_device)
{
unsigned long flags;
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: handle"
"(0x%04x), sas_addr(0x%016llx)\n", ioc->name, __func__,
sas_device->handle, (unsigned long long)sas_device->sas_address));
spin_lock_irqsave(&ioc->sas_device_lock, flags);
list_add_tail(&sas_device->list, &ioc->sas_device_init_list);
_scsih_determine_boot_device(ioc, sas_device, 0);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
/**
* _scsih_raid_device_find_by_id - raid device search
* @ioc: per adapter object
* @id: sas device target id
* @channel: sas device channel
* Context: Calling function should acquire ioc->raid_device_lock
*
* This searches for raid_device based on target id, then return raid_device
* object.
*/
static struct _raid_device *
_scsih_raid_device_find_by_id(struct MPT2SAS_ADAPTER *ioc, int id, int channel)
{
struct _raid_device *raid_device, *r;
r = NULL;
list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
if (raid_device->id == id && raid_device->channel == channel) {
r = raid_device;
goto out;
}
}
out:
return r;
}
/**
* _scsih_raid_device_find_by_handle - raid device search
* @ioc: per adapter object
* @handle: sas device handle (assigned by firmware)
* Context: Calling function should acquire ioc->raid_device_lock
*
* This searches for raid_device based on handle, then return raid_device
* object.
*/
static struct _raid_device *
_scsih_raid_device_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct _raid_device *raid_device, *r;
r = NULL;
list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
if (raid_device->handle != handle)
continue;
r = raid_device;
goto out;
}
out:
return r;
}
/**
* _scsih_raid_device_find_by_wwid - raid device search
* @ioc: per adapter object
* @handle: sas device handle (assigned by firmware)
* Context: Calling function should acquire ioc->raid_device_lock
*
* This searches for raid_device based on wwid, then return raid_device
* object.
*/
static struct _raid_device *
_scsih_raid_device_find_by_wwid(struct MPT2SAS_ADAPTER *ioc, u64 wwid)
{
struct _raid_device *raid_device, *r;
r = NULL;
list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
if (raid_device->wwid != wwid)
continue;
r = raid_device;
goto out;
}
out:
return r;
}
/**
* _scsih_raid_device_add - add raid_device object
* @ioc: per adapter object
* @raid_device: raid_device object
*
* This is added to the raid_device_list link list.
*/
static void
_scsih_raid_device_add(struct MPT2SAS_ADAPTER *ioc,
struct _raid_device *raid_device)
{
unsigned long flags;
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: handle"
"(0x%04x), wwid(0x%016llx)\n", ioc->name, __func__,
raid_device->handle, (unsigned long long)raid_device->wwid));
spin_lock_irqsave(&ioc->raid_device_lock, flags);
list_add_tail(&raid_device->list, &ioc->raid_device_list);
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
}
/**
* _scsih_raid_device_remove - delete raid_device object
* @ioc: per adapter object
* @raid_device: raid_device object
*
*/
static void
_scsih_raid_device_remove(struct MPT2SAS_ADAPTER *ioc,
struct _raid_device *raid_device)
{
unsigned long flags;
spin_lock_irqsave(&ioc->raid_device_lock, flags);
list_del(&raid_device->list);
kfree(raid_device);
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
}
/**
* mpt2sas_scsih_expander_find_by_handle - expander device search
* @ioc: per adapter object
* @handle: expander handle (assigned by firmware)
* Context: Calling function should acquire ioc->sas_device_lock
*
* This searches for expander device based on handle, then returns the
* sas_node object.
*/
struct _sas_node *
mpt2sas_scsih_expander_find_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct _sas_node *sas_expander, *r;
r = NULL;
list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
if (sas_expander->handle != handle)
continue;
r = sas_expander;
goto out;
}
out:
return r;
}
/**
* mpt2sas_scsih_expander_find_by_sas_address - expander device search
* @ioc: per adapter object
* @sas_address: sas address
* Context: Calling function should acquire ioc->sas_node_lock.
*
* This searches for expander device based on sas_address, then returns the
* sas_node object.
*/
struct _sas_node *
mpt2sas_scsih_expander_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc,
u64 sas_address)
{
struct _sas_node *sas_expander, *r;
r = NULL;
list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
if (sas_expander->sas_address != sas_address)
continue;
r = sas_expander;
goto out;
}
out:
return r;
}
/**
* _scsih_expander_node_add - insert expander device to the list.
* @ioc: per adapter object
* @sas_expander: the sas_device object
* Context: This function will acquire ioc->sas_node_lock.
*
* Adding new object to the ioc->sas_expander_list.
*
* Return nothing.
*/
static void
_scsih_expander_node_add(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_expander)
{
unsigned long flags;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
list_add_tail(&sas_expander->list, &ioc->sas_expander_list);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
}
/**
* _scsih_is_end_device - determines if device is an end device
* @device_info: bitfield providing information about the device.
* Context: none
*
* Returns 1 if end device.
*/
static int
_scsih_is_end_device(u32 device_info)
{
if (device_info & MPI2_SAS_DEVICE_INFO_END_DEVICE &&
((device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) |
(device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET) |
(device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)))
return 1;
else
return 0;
}
/**
* _scsih_scsi_lookup_get - returns scmd entry
* @ioc: per adapter object
* @smid: system request message index
*
* Returns the smid stored scmd pointer.
*/
static struct scsi_cmnd *
_scsih_scsi_lookup_get(struct MPT2SAS_ADAPTER *ioc, u16 smid)
{
return ioc->scsi_lookup[smid - 1].scmd;
}
/**
* _scsih_scsi_lookup_get_clear - returns scmd entry
* @ioc: per adapter object
* @smid: system request message index
*
* Returns the smid stored scmd pointer.
* Then will derefrence the stored scmd pointer.
*/
static inline struct scsi_cmnd *
_scsih_scsi_lookup_get_clear(struct MPT2SAS_ADAPTER *ioc, u16 smid)
{
unsigned long flags;
struct scsi_cmnd *scmd;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
scmd = ioc->scsi_lookup[smid - 1].scmd;
ioc->scsi_lookup[smid - 1].scmd = NULL;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return scmd;
}
/**
* _scsih_scsi_lookup_find_by_scmd - scmd lookup
* @ioc: per adapter object
* @smid: system request message index
* @scmd: pointer to scsi command object
* Context: This function will acquire ioc->scsi_lookup_lock.
*
* This will search for a scmd pointer in the scsi_lookup array,
* returning the revelent smid. A returned value of zero means invalid.
*/
static u16
_scsih_scsi_lookup_find_by_scmd(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd
*scmd)
{
u16 smid;
unsigned long flags;
int i;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
smid = 0;
for (i = 0; i < ioc->scsiio_depth; i++) {
if (ioc->scsi_lookup[i].scmd == scmd) {
smid = ioc->scsi_lookup[i].smid;
goto out;
}
}
out:
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return smid;
}
/**
* _scsih_scsi_lookup_find_by_target - search for matching channel:id
* @ioc: per adapter object
* @id: target id
* @channel: channel
* Context: This function will acquire ioc->scsi_lookup_lock.
*
* This will search for a matching channel:id in the scsi_lookup array,
* returning 1 if found.
*/
static u8
_scsih_scsi_lookup_find_by_target(struct MPT2SAS_ADAPTER *ioc, int id,
int channel)
{
u8 found;
unsigned long flags;
int i;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
found = 0;
for (i = 0 ; i < ioc->scsiio_depth; i++) {
if (ioc->scsi_lookup[i].scmd &&
(ioc->scsi_lookup[i].scmd->device->id == id &&
ioc->scsi_lookup[i].scmd->device->channel == channel)) {
found = 1;
goto out;
}
}
out:
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return found;
}
/**
* _scsih_scsi_lookup_find_by_lun - search for matching channel:id:lun
* @ioc: per adapter object
* @id: target id
* @lun: lun number
* @channel: channel
* Context: This function will acquire ioc->scsi_lookup_lock.
*
* This will search for a matching channel:id:lun in the scsi_lookup array,
* returning 1 if found.
*/
static u8
_scsih_scsi_lookup_find_by_lun(struct MPT2SAS_ADAPTER *ioc, int id,
unsigned int lun, int channel)
{
u8 found;
unsigned long flags;
int i;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
found = 0;
for (i = 0 ; i < ioc->scsiio_depth; i++) {
if (ioc->scsi_lookup[i].scmd &&
(ioc->scsi_lookup[i].scmd->device->id == id &&
ioc->scsi_lookup[i].scmd->device->channel == channel &&
ioc->scsi_lookup[i].scmd->device->lun == lun)) {
found = 1;
goto out;
}
}
out:
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return found;
}
/**
* _scsih_get_chain_buffer_tracker - obtain chain tracker
* @ioc: per adapter object
* @smid: smid associated to an IO request
*
* Returns chain tracker(from ioc->free_chain_list)
*/
static struct chain_tracker *
_scsih_get_chain_buffer_tracker(struct MPT2SAS_ADAPTER *ioc, u16 smid)
{
struct chain_tracker *chain_req;
unsigned long flags;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
if (list_empty(&ioc->free_chain_list)) {
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT "chain buffers not "
"available\n", ioc->name));
return NULL;
}
chain_req = list_entry(ioc->free_chain_list.next,
struct chain_tracker, tracker_list);
list_del_init(&chain_req->tracker_list);
list_add_tail(&chain_req->tracker_list,
&ioc->scsi_lookup[smid - 1].chain_list);
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return chain_req;
}
/**
* _scsih_build_scatter_gather - main sg creation routine
* @ioc: per adapter object
* @scmd: scsi command
* @smid: system request message index
* Context: none.
*
* The main routine that builds scatter gather table from a given
* scsi request sent via the .queuecommand main handler.
*
* Returns 0 success, anything else error
*/
static int
_scsih_build_scatter_gather(struct MPT2SAS_ADAPTER *ioc,
struct scsi_cmnd *scmd, u16 smid)
{
Mpi2SCSIIORequest_t *mpi_request;
dma_addr_t chain_dma;
struct scatterlist *sg_scmd;
void *sg_local, *chain;
u32 chain_offset;
u32 chain_length;
u32 chain_flags;
int sges_left;
u32 sges_in_segment;
u32 sgl_flags;
u32 sgl_flags_last_element;
u32 sgl_flags_end_buffer;
struct chain_tracker *chain_req;
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
/* init scatter gather flags */
sgl_flags = MPI2_SGE_FLAGS_SIMPLE_ELEMENT;
if (scmd->sc_data_direction == DMA_TO_DEVICE)
sgl_flags |= MPI2_SGE_FLAGS_HOST_TO_IOC;
sgl_flags_last_element = (sgl_flags | MPI2_SGE_FLAGS_LAST_ELEMENT)
<< MPI2_SGE_FLAGS_SHIFT;
sgl_flags_end_buffer = (sgl_flags | MPI2_SGE_FLAGS_LAST_ELEMENT |
MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST)
<< MPI2_SGE_FLAGS_SHIFT;
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
sg_scmd = scsi_sglist(scmd);
sges_left = scsi_dma_map(scmd);
if (sges_left < 0) {
sdev_printk(KERN_ERR, scmd->device, "pci_map_sg"
" failed: request for %d bytes!\n", scsi_bufflen(scmd));
return -ENOMEM;
}
sg_local = &mpi_request->SGL;
sges_in_segment = ioc->max_sges_in_main_message;
if (sges_left <= sges_in_segment)
goto fill_in_last_segment;
mpi_request->ChainOffset = (offsetof(Mpi2SCSIIORequest_t, SGL) +
(sges_in_segment * ioc->sge_size))/4;
/* fill in main message segment when there is a chain following */
while (sges_in_segment) {
if (sges_in_segment == 1)
ioc->base_add_sg_single(sg_local,
sgl_flags_last_element | sg_dma_len(sg_scmd),
sg_dma_address(sg_scmd));
else
ioc->base_add_sg_single(sg_local, sgl_flags |
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += ioc->sge_size;
sges_left--;
sges_in_segment--;
}
/* initializing the chain flags and pointers */
chain_flags = MPI2_SGE_FLAGS_CHAIN_ELEMENT << MPI2_SGE_FLAGS_SHIFT;
chain_req = _scsih_get_chain_buffer_tracker(ioc, smid);
if (!chain_req)
return -1;
chain = chain_req->chain_buffer;
chain_dma = chain_req->chain_buffer_dma;
do {
sges_in_segment = (sges_left <=
ioc->max_sges_in_chain_message) ? sges_left :
ioc->max_sges_in_chain_message;
chain_offset = (sges_left == sges_in_segment) ?
0 : (sges_in_segment * ioc->sge_size)/4;
chain_length = sges_in_segment * ioc->sge_size;
if (chain_offset) {
chain_offset = chain_offset <<
MPI2_SGE_CHAIN_OFFSET_SHIFT;
chain_length += ioc->sge_size;
}
ioc->base_add_sg_single(sg_local, chain_flags | chain_offset |
chain_length, chain_dma);
sg_local = chain;
if (!chain_offset)
goto fill_in_last_segment;
/* fill in chain segments */
while (sges_in_segment) {
if (sges_in_segment == 1)
ioc->base_add_sg_single(sg_local,
sgl_flags_last_element |
sg_dma_len(sg_scmd),
sg_dma_address(sg_scmd));
else
ioc->base_add_sg_single(sg_local, sgl_flags |
sg_dma_len(sg_scmd),
sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += ioc->sge_size;
sges_left--;
sges_in_segment--;
}
chain_req = _scsih_get_chain_buffer_tracker(ioc, smid);
if (!chain_req)
return -1;
chain = chain_req->chain_buffer;
chain_dma = chain_req->chain_buffer_dma;
} while (1);
fill_in_last_segment:
/* fill the last segment */
while (sges_left) {
if (sges_left == 1)
ioc->base_add_sg_single(sg_local, sgl_flags_end_buffer |
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
else
ioc->base_add_sg_single(sg_local, sgl_flags |
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += ioc->sge_size;
sges_left--;
}
return 0;
}
/**
* _scsih_adjust_queue_depth - setting device queue depth
* @sdev: scsi device struct
* @qdepth: requested queue depth
*
*
* Returns nothing
*/
static void
_scsih_adjust_queue_depth(struct scsi_device *sdev, int qdepth)
{
struct Scsi_Host *shost = sdev->host;
int max_depth;
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct MPT2SAS_TARGET *sas_target_priv_data;
struct _sas_device *sas_device;
unsigned long flags;
max_depth = shost->can_queue;
/* limit max device queue for SATA to 32 */
sas_device_priv_data = sdev->hostdata;
if (!sas_device_priv_data)
goto not_sata;
sas_target_priv_data = sas_device_priv_data->sas_target;
if (!sas_target_priv_data)
goto not_sata;
if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))
goto not_sata;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
sas_device_priv_data->sas_target->sas_address);
if (sas_device && sas_device->device_info &
MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
max_depth = MPT2SAS_SATA_QUEUE_DEPTH;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
not_sata:
if (!sdev->tagged_supported)
max_depth = 1;
if (qdepth > max_depth)
qdepth = max_depth;
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
}
/**
* _scsih_change_queue_depth - setting device queue depth
* @sdev: scsi device struct
* @qdepth: requested queue depth
* @reason: SCSI_QDEPTH_DEFAULT/SCSI_QDEPTH_QFULL/SCSI_QDEPTH_RAMP_UP
* (see include/scsi/scsi_host.h for definition)
*
* Returns queue depth.
*/
static int
_scsih_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
{
if (reason == SCSI_QDEPTH_DEFAULT || reason == SCSI_QDEPTH_RAMP_UP)
_scsih_adjust_queue_depth(sdev, qdepth);
else if (reason == SCSI_QDEPTH_QFULL)
scsi_track_queue_full(sdev, qdepth);
else
return -EOPNOTSUPP;
if (sdev->inquiry_len > 7)
sdev_printk(KERN_INFO, sdev, "qdepth(%d), tagged(%d), "
"simple(%d), ordered(%d), scsi_level(%d), cmd_que(%d)\n",
sdev->queue_depth, sdev->tagged_supported, sdev->simple_tags,
sdev->ordered_tags, sdev->scsi_level,
(sdev->inquiry[7] & 2) >> 1);
return sdev->queue_depth;
}
/**
* _scsih_change_queue_type - changing device queue tag type
* @sdev: scsi device struct
* @tag_type: requested tag type
*
* Returns queue tag type.
*/
static int
_scsih_change_queue_type(struct scsi_device *sdev, int tag_type)
{
if (sdev->tagged_supported) {
scsi_set_tag_type(sdev, tag_type);
if (tag_type)
scsi_activate_tcq(sdev, sdev->queue_depth);
else
scsi_deactivate_tcq(sdev, sdev->queue_depth);
} else
tag_type = 0;
return tag_type;
}
/**
* _scsih_target_alloc - target add routine
* @starget: scsi target struct
*
* Returns 0 if ok. Any other return is assumed to be an error and
* the device is ignored.
*/
static int
_scsih_target_alloc(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(&starget->dev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
struct MPT2SAS_TARGET *sas_target_priv_data;
struct _sas_device *sas_device;
struct _raid_device *raid_device;
unsigned long flags;
struct sas_rphy *rphy;
sas_target_priv_data = kzalloc(sizeof(struct scsi_target), GFP_KERNEL);
if (!sas_target_priv_data)
return -ENOMEM;
starget->hostdata = sas_target_priv_data;
sas_target_priv_data->starget = starget;
sas_target_priv_data->handle = MPT2SAS_INVALID_DEVICE_HANDLE;
/* RAID volumes */
if (starget->channel == RAID_CHANNEL) {
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
starget->channel);
if (raid_device) {
sas_target_priv_data->handle = raid_device->handle;
sas_target_priv_data->sas_address = raid_device->wwid;
sas_target_priv_data->flags |= MPT_TARGET_FLAGS_VOLUME;
if (ioc->is_warpdrive)
sas_target_priv_data->raid_device = raid_device;
raid_device->starget = starget;
}
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
return 0;
}
/* sas/sata devices */
spin_lock_irqsave(&ioc->sas_device_lock, flags);
rphy = dev_to_rphy(starget->dev.parent);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
rphy->identify.sas_address);
if (sas_device) {
sas_target_priv_data->handle = sas_device->handle;
sas_target_priv_data->sas_address = sas_device->sas_address;
sas_device->starget = starget;
sas_device->id = starget->id;
sas_device->channel = starget->channel;
if (test_bit(sas_device->handle, ioc->pd_handles))
sas_target_priv_data->flags |=
MPT_TARGET_FLAGS_RAID_COMPONENT;
}
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return 0;
}
/**
* _scsih_target_destroy - target destroy routine
* @starget: scsi target struct
*
* Returns nothing.
*/
static void
_scsih_target_destroy(struct scsi_target *starget)
{
struct Scsi_Host *shost = dev_to_shost(&starget->dev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
struct MPT2SAS_TARGET *sas_target_priv_data;
struct _sas_device *sas_device;
struct _raid_device *raid_device;
unsigned long flags;
struct sas_rphy *rphy;
sas_target_priv_data = starget->hostdata;
if (!sas_target_priv_data)
return;
if (starget->channel == RAID_CHANNEL) {
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_id(ioc, starget->id,
starget->channel);
if (raid_device) {
raid_device->starget = NULL;
raid_device->sdev = NULL;
}
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
goto out;
}
spin_lock_irqsave(&ioc->sas_device_lock, flags);
rphy = dev_to_rphy(starget->dev.parent);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
rphy->identify.sas_address);
if (sas_device && (sas_device->starget == starget) &&
(sas_device->id == starget->id) &&
(sas_device->channel == starget->channel))
sas_device->starget = NULL;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
out:
kfree(sas_target_priv_data);
starget->hostdata = NULL;
}
/**
* _scsih_slave_alloc - device add routine
* @sdev: scsi device struct
*
* Returns 0 if ok. Any other return is assumed to be an error and
* the device is ignored.
*/
static int
_scsih_slave_alloc(struct scsi_device *sdev)
{
struct Scsi_Host *shost;
struct MPT2SAS_ADAPTER *ioc;
struct MPT2SAS_TARGET *sas_target_priv_data;
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct scsi_target *starget;
struct _raid_device *raid_device;
unsigned long flags;
sas_device_priv_data = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
if (!sas_device_priv_data)
return -ENOMEM;
sas_device_priv_data->lun = sdev->lun;
sas_device_priv_data->flags = MPT_DEVICE_FLAGS_INIT;
starget = scsi_target(sdev);
sas_target_priv_data = starget->hostdata;
sas_target_priv_data->num_luns++;
sas_device_priv_data->sas_target = sas_target_priv_data;
sdev->hostdata = sas_device_priv_data;
if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT))
sdev->no_uld_attach = 1;
shost = dev_to_shost(&starget->dev);
ioc = shost_priv(shost);
if (starget->channel == RAID_CHANNEL) {
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_id(ioc,
starget->id, starget->channel);
if (raid_device)
raid_device->sdev = sdev; /* raid is single lun */
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
}
return 0;
}
/**
* _scsih_slave_destroy - device destroy routine
* @sdev: scsi device struct
*
* Returns nothing.
*/
static void
_scsih_slave_destroy(struct scsi_device *sdev)
{
struct MPT2SAS_TARGET *sas_target_priv_data;
struct scsi_target *starget;
struct Scsi_Host *shost;
struct MPT2SAS_ADAPTER *ioc;
struct _sas_device *sas_device;
unsigned long flags;
if (!sdev->hostdata)
return;
starget = scsi_target(sdev);
sas_target_priv_data = starget->hostdata;
sas_target_priv_data->num_luns--;
shost = dev_to_shost(&starget->dev);
ioc = shost_priv(shost);
if (!(sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME)) {
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
sas_target_priv_data->sas_address);
if (sas_device && !sas_target_priv_data->num_luns)
sas_device->starget = NULL;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
kfree(sdev->hostdata);
sdev->hostdata = NULL;
}
/**
* _scsih_display_sata_capabilities - sata capabilities
* @ioc: per adapter object
* @handle: device handle
* @sdev: scsi device struct
*/
static void
_scsih_display_sata_capabilities(struct MPT2SAS_ADAPTER *ioc,
u16 handle, struct scsi_device *sdev)
{
Mpi2ConfigReply_t mpi_reply;
Mpi2SasDevicePage0_t sas_device_pg0;
u32 ioc_status;
u16 flags;
u32 device_info;
if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
flags = le16_to_cpu(sas_device_pg0.Flags);
device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
sdev_printk(KERN_INFO, sdev,
"atapi(%s), ncq(%s), asyn_notify(%s), smart(%s), fua(%s), "
"sw_preserve(%s)\n",
(device_info & MPI2_SAS_DEVICE_INFO_ATAPI_DEVICE) ? "y" : "n",
(flags & MPI2_SAS_DEVICE0_FLAGS_SATA_NCQ_SUPPORTED) ? "y" : "n",
(flags & MPI2_SAS_DEVICE0_FLAGS_SATA_ASYNCHRONOUS_NOTIFY) ? "y" :
"n",
(flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SMART_SUPPORTED) ? "y" : "n",
(flags & MPI2_SAS_DEVICE0_FLAGS_SATA_FUA_SUPPORTED) ? "y" : "n",
(flags & MPI2_SAS_DEVICE0_FLAGS_SATA_SW_PRESERVE) ? "y" : "n");
}
/**
* _scsih_is_raid - return boolean indicating device is raid volume
* @dev the device struct object
*/
static int
_scsih_is_raid(struct device *dev)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
if (ioc->is_warpdrive)
return 0;
return (sdev->channel == RAID_CHANNEL) ? 1 : 0;
}
/**
* _scsih_get_resync - get raid volume resync percent complete
* @dev the device struct object
*/
static void
_scsih_get_resync(struct device *dev)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
static struct _raid_device *raid_device;
unsigned long flags;
Mpi2RaidVolPage0_t vol_pg0;
Mpi2ConfigReply_t mpi_reply;
u32 volume_status_flags;
u8 percent_complete;
u16 handle;
percent_complete = 0;
handle = 0;
if (ioc->is_warpdrive)
goto out;
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
sdev->channel);
if (raid_device) {
handle = raid_device->handle;
percent_complete = raid_device->percent_complete;
}
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
if (!handle)
goto out;
if (mpt2sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
sizeof(Mpi2RaidVolPage0_t))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
percent_complete = 0;
goto out;
}
volume_status_flags = le32_to_cpu(vol_pg0.VolumeStatusFlags);
if (!(volume_status_flags &
MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS))
percent_complete = 0;
out:
raid_set_resync(mpt2sas_raid_template, dev, percent_complete);
}
/**
* _scsih_get_state - get raid volume level
* @dev the device struct object
*/
static void
_scsih_get_state(struct device *dev)
{
struct scsi_device *sdev = to_scsi_device(dev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
static struct _raid_device *raid_device;
unsigned long flags;
Mpi2RaidVolPage0_t vol_pg0;
Mpi2ConfigReply_t mpi_reply;
u32 volstate;
enum raid_state state = RAID_STATE_UNKNOWN;
u16 handle = 0;
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_id(ioc, sdev->id,
sdev->channel);
if (raid_device)
handle = raid_device->handle;
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
if (!raid_device)
goto out;
if (mpt2sas_config_get_raid_volume_pg0(ioc, &mpi_reply, &vol_pg0,
MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
sizeof(Mpi2RaidVolPage0_t))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
volstate = le32_to_cpu(vol_pg0.VolumeStatusFlags);
if (volstate & MPI2_RAIDVOL0_STATUS_FLAG_RESYNC_IN_PROGRESS) {
state = RAID_STATE_RESYNCING;
goto out;
}
switch (vol_pg0.VolumeState) {
case MPI2_RAID_VOL_STATE_OPTIMAL:
case MPI2_RAID_VOL_STATE_ONLINE:
state = RAID_STATE_ACTIVE;
break;
case MPI2_RAID_VOL_STATE_DEGRADED:
state = RAID_STATE_DEGRADED;
break;
case MPI2_RAID_VOL_STATE_FAILED:
case MPI2_RAID_VOL_STATE_MISSING:
state = RAID_STATE_OFFLINE;
break;
}
out:
raid_set_state(mpt2sas_raid_template, dev, state);
}
/**
* _scsih_set_level - set raid level
* @sdev: scsi device struct
* @volume_type: volume type
*/
static void
_scsih_set_level(struct scsi_device *sdev, u8 volume_type)
{
enum raid_level level = RAID_LEVEL_UNKNOWN;
switch (volume_type) {
case MPI2_RAID_VOL_TYPE_RAID0:
level = RAID_LEVEL_0;
break;
case MPI2_RAID_VOL_TYPE_RAID10:
level = RAID_LEVEL_10;
break;
case MPI2_RAID_VOL_TYPE_RAID1E:
level = RAID_LEVEL_1E;
break;
case MPI2_RAID_VOL_TYPE_RAID1:
level = RAID_LEVEL_1;
break;
}
raid_set_level(mpt2sas_raid_template, &sdev->sdev_gendev, level);
}
/**
* _scsih_get_volume_capabilities - volume capabilities
* @ioc: per adapter object
* @sas_device: the raid_device object
*
* Returns 0 for success, else 1
*/
static int
_scsih_get_volume_capabilities(struct MPT2SAS_ADAPTER *ioc,
struct _raid_device *raid_device)
{
Mpi2RaidVolPage0_t *vol_pg0;
Mpi2RaidPhysDiskPage0_t pd_pg0;
Mpi2SasDevicePage0_t sas_device_pg0;
Mpi2ConfigReply_t mpi_reply;
u16 sz;
u8 num_pds;
if ((mpt2sas_config_get_number_pds(ioc, raid_device->handle,
&num_pds)) || !num_pds) {
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT
"failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
__func__));
return 1;
}
raid_device->num_pds = num_pds;
sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds *
sizeof(Mpi2RaidVol0PhysDisk_t));
vol_pg0 = kzalloc(sz, GFP_KERNEL);
if (!vol_pg0) {
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT
"failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
__func__));
return 1;
}
if ((mpt2sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0,
MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) {
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT
"failure at %s:%d/%s()!\n", ioc->name, __FILE__, __LINE__,
__func__));
kfree(vol_pg0);
return 1;
}
raid_device->volume_type = vol_pg0->VolumeType;
/* figure out what the underlying devices are by
* obtaining the device_info bits for the 1st device
*/
if (!(mpt2sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
&pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM,
vol_pg0->PhysDisk[0].PhysDiskNum))) {
if (!(mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply,
&sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
le16_to_cpu(pd_pg0.DevHandle)))) {
raid_device->device_info =
le32_to_cpu(sas_device_pg0.DeviceInfo);
}
}
kfree(vol_pg0);
return 0;
}
/**
* _scsih_disable_ddio - Disable direct I/O for all the volumes
* @ioc: per adapter object
*/
static void
_scsih_disable_ddio(struct MPT2SAS_ADAPTER *ioc)
{
Mpi2RaidVolPage1_t vol_pg1;
Mpi2ConfigReply_t mpi_reply;
struct _raid_device *raid_device;
u16 handle;
u16 ioc_status;
unsigned long flags;
handle = 0xFFFF;
while (!(mpt2sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
&vol_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
handle = le16_to_cpu(vol_pg1.DevHandle);
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_handle(ioc, handle);
if (raid_device)
raid_device->direct_io_enabled = 0;
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
}
return;
}
/**
* _scsih_get_num_volumes - Get number of volumes in the ioc
* @ioc: per adapter object
*/
static u8
_scsih_get_num_volumes(struct MPT2SAS_ADAPTER *ioc)
{
Mpi2RaidVolPage1_t vol_pg1;
Mpi2ConfigReply_t mpi_reply;
u16 handle;
u8 vol_cnt = 0;
u16 ioc_status;
handle = 0xFFFF;
while (!(mpt2sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
&vol_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
vol_cnt++;
handle = le16_to_cpu(vol_pg1.DevHandle);
}
return vol_cnt;
}
/**
* _scsih_init_warpdrive_properties - Set properties for warpdrive direct I/O.
* @ioc: per adapter object
* @raid_device: the raid_device object
*/
static void
_scsih_init_warpdrive_properties(struct MPT2SAS_ADAPTER *ioc,
struct _raid_device *raid_device)
{
Mpi2RaidVolPage0_t *vol_pg0;
Mpi2RaidPhysDiskPage0_t pd_pg0;
Mpi2ConfigReply_t mpi_reply;
u16 sz;
u8 num_pds, count;
unsigned long stripe_sz, block_sz;
u8 stripe_exp, block_exp;
u64 dev_max_lba;
if (!ioc->is_warpdrive)
return;
if (ioc->mfg_pg10_hide_flag == MFG_PAGE10_EXPOSE_ALL_DISKS) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is disabled "
"globally as drives are exposed\n", ioc->name);
return;
}
if (_scsih_get_num_volumes(ioc) > 1) {
_scsih_disable_ddio(ioc);
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is disabled "
"globally as number of drives > 1\n", ioc->name);
return;
}
if ((mpt2sas_config_get_number_pds(ioc, raid_device->handle,
&num_pds)) || !num_pds) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is disabled "
"Failure in computing number of drives\n", ioc->name);
return;
}
sz = offsetof(Mpi2RaidVolPage0_t, PhysDisk) + (num_pds *
sizeof(Mpi2RaidVol0PhysDisk_t));
vol_pg0 = kzalloc(sz, GFP_KERNEL);
if (!vol_pg0) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is disabled "
"Memory allocation failure for RVPG0\n", ioc->name);
return;
}
if ((mpt2sas_config_get_raid_volume_pg0(ioc, &mpi_reply, vol_pg0,
MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, raid_device->handle, sz))) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is disabled "
"Failure in retrieving RVPG0\n", ioc->name);
kfree(vol_pg0);
return;
}
/*
* WARPDRIVE:If number of physical disks in a volume exceeds the max pds
* assumed for WARPDRIVE, disable direct I/O
*/
if (num_pds > MPT_MAX_WARPDRIVE_PDS) {
printk(MPT2SAS_WARN_FMT "WarpDrive : Direct IO is disabled "
"for the drive with handle(0x%04x): num_mem=%d, "
"max_mem_allowed=%d\n", ioc->name, raid_device->handle,
num_pds, MPT_MAX_WARPDRIVE_PDS);
kfree(vol_pg0);
return;
}
for (count = 0; count < num_pds; count++) {
if (mpt2sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
&pd_pg0, MPI2_PHYSDISK_PGAD_FORM_PHYSDISKNUM,
vol_pg0->PhysDisk[count].PhysDiskNum) ||
pd_pg0.DevHandle == MPT2SAS_INVALID_DEVICE_HANDLE) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is "
"disabled for the drive with handle(0x%04x) member"
"handle retrieval failed for member number=%d\n",
ioc->name, raid_device->handle,
vol_pg0->PhysDisk[count].PhysDiskNum);
goto out_error;
}
/* Disable direct I/O if member drive lba exceeds 4 bytes */
dev_max_lba = le64_to_cpu(pd_pg0.DeviceMaxLBA);
if (dev_max_lba >> 32) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is "
"disabled for the drive with handle(0x%04x) member"
"handle (0x%04x) unsupported max lba 0x%016llx\n",
ioc->name, raid_device->handle,
le16_to_cpu(pd_pg0.DevHandle),
(unsigned long long)dev_max_lba);
goto out_error;
}
raid_device->pd_handle[count] = le16_to_cpu(pd_pg0.DevHandle);
}
/*
* Assumption for WD: Direct I/O is not supported if the volume is
* not RAID0
*/
if (raid_device->volume_type != MPI2_RAID_VOL_TYPE_RAID0) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is disabled "
"for the drive with handle(0x%04x): type=%d, "
"s_sz=%uK, blk_size=%u\n", ioc->name,
raid_device->handle, raid_device->volume_type,
(le32_to_cpu(vol_pg0->StripeSize) *
le16_to_cpu(vol_pg0->BlockSize)) / 1024,
le16_to_cpu(vol_pg0->BlockSize));
goto out_error;
}
stripe_sz = le32_to_cpu(vol_pg0->StripeSize);
stripe_exp = find_first_bit(&stripe_sz, 32);
if (stripe_exp == 32) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is disabled "
"for the drive with handle(0x%04x) invalid stripe sz %uK\n",
ioc->name, raid_device->handle,
(le32_to_cpu(vol_pg0->StripeSize) *
le16_to_cpu(vol_pg0->BlockSize)) / 1024);
goto out_error;
}
raid_device->stripe_exponent = stripe_exp;
block_sz = le16_to_cpu(vol_pg0->BlockSize);
block_exp = find_first_bit(&block_sz, 16);
if (block_exp == 16) {
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is disabled "
"for the drive with handle(0x%04x) invalid block sz %u\n",
ioc->name, raid_device->handle,
le16_to_cpu(vol_pg0->BlockSize));
goto out_error;
}
raid_device->block_exponent = block_exp;
raid_device->direct_io_enabled = 1;
printk(MPT2SAS_INFO_FMT "WarpDrive : Direct IO is Enabled for the drive"
" with handle(0x%04x)\n", ioc->name, raid_device->handle);
/*
* WARPDRIVE: Though the following fields are not used for direct IO,
* stored for future purpose:
*/
raid_device->max_lba = le64_to_cpu(vol_pg0->MaxLBA);
raid_device->stripe_sz = le32_to_cpu(vol_pg0->StripeSize);
raid_device->block_sz = le16_to_cpu(vol_pg0->BlockSize);
kfree(vol_pg0);
return;
out_error:
raid_device->direct_io_enabled = 0;
for (count = 0; count < num_pds; count++)
raid_device->pd_handle[count] = 0;
kfree(vol_pg0);
return;
}
/**
* _scsih_enable_tlr - setting TLR flags
* @ioc: per adapter object
* @sdev: scsi device struct
*
* Enabling Transaction Layer Retries for tape devices when
* vpd page 0x90 is present
*
*/
static void
_scsih_enable_tlr(struct MPT2SAS_ADAPTER *ioc, struct scsi_device *sdev)
{
/* only for TAPE */
if (sdev->type != TYPE_TAPE)
return;
if (!(ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR))
return;
sas_enable_tlr(sdev);
sdev_printk(KERN_INFO, sdev, "TLR %s\n",
sas_is_tlr_enabled(sdev) ? "Enabled" : "Disabled");
return;
}
/**
* _scsih_slave_configure - device configure routine.
* @sdev: scsi device struct
*
* Returns 0 if ok. Any other return is assumed to be an error and
* the device is ignored.
*/
static int
_scsih_slave_configure(struct scsi_device *sdev)
{
struct Scsi_Host *shost = sdev->host;
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct MPT2SAS_TARGET *sas_target_priv_data;
struct _sas_device *sas_device;
struct _raid_device *raid_device;
unsigned long flags;
int qdepth;
u8 ssp_target = 0;
char *ds = "";
char *r_level = "";
u16 handle, volume_handle = 0;
u64 volume_wwid = 0;
qdepth = 1;
sas_device_priv_data = sdev->hostdata;
sas_device_priv_data->configured_lun = 1;
sas_device_priv_data->flags &= ~MPT_DEVICE_FLAGS_INIT;
sas_target_priv_data = sas_device_priv_data->sas_target;
handle = sas_target_priv_data->handle;
/* raid volume handling */
if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME) {
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_handle(ioc, handle);
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
if (!raid_device) {
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT
"failure at %s:%d/%s()!\n", ioc->name, __FILE__,
__LINE__, __func__));
return 1;
}
if (_scsih_get_volume_capabilities(ioc, raid_device)) {
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT
"failure at %s:%d/%s()!\n", ioc->name, __FILE__,
__LINE__, __func__));
return 1;
}
/*
* WARPDRIVE: Initialize the required data for Direct IO
*/
_scsih_init_warpdrive_properties(ioc, raid_device);
/* RAID Queue Depth Support
* IS volume = underlying qdepth of drive type, either
* MPT2SAS_SAS_QUEUE_DEPTH or MPT2SAS_SATA_QUEUE_DEPTH
* IM/IME/R10 = 128 (MPT2SAS_RAID_QUEUE_DEPTH)
*/
if (raid_device->device_info &
MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
qdepth = MPT2SAS_SAS_QUEUE_DEPTH;
ds = "SSP";
} else {
qdepth = MPT2SAS_SATA_QUEUE_DEPTH;
if (raid_device->device_info &
MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
ds = "SATA";
else
ds = "STP";
}
switch (raid_device->volume_type) {
case MPI2_RAID_VOL_TYPE_RAID0:
r_level = "RAID0";
break;
case MPI2_RAID_VOL_TYPE_RAID1E:
qdepth = MPT2SAS_RAID_QUEUE_DEPTH;
if (ioc->manu_pg10.OEMIdentifier &&
(le32_to_cpu(ioc->manu_pg10.GenericFlags0) &
MFG10_GF0_R10_DISPLAY) &&
!(raid_device->num_pds % 2))
r_level = "RAID10";
else
r_level = "RAID1E";
break;
case MPI2_RAID_VOL_TYPE_RAID1:
qdepth = MPT2SAS_RAID_QUEUE_DEPTH;
r_level = "RAID1";
break;
case MPI2_RAID_VOL_TYPE_RAID10:
qdepth = MPT2SAS_RAID_QUEUE_DEPTH;
r_level = "RAID10";
break;
case MPI2_RAID_VOL_TYPE_UNKNOWN:
default:
qdepth = MPT2SAS_RAID_QUEUE_DEPTH;
r_level = "RAIDX";
break;
}
if (!ioc->hide_ir_msg)
sdev_printk(KERN_INFO, sdev, "%s: handle(0x%04x), "
"wwid(0x%016llx), pd_count(%d), type(%s)\n",
r_level, raid_device->handle,
(unsigned long long)raid_device->wwid,
raid_device->num_pds, ds);
_scsih_change_queue_depth(sdev, qdepth, SCSI_QDEPTH_DEFAULT);
/* raid transport support */
if (!ioc->is_warpdrive)
_scsih_set_level(sdev, raid_device->volume_type);
return 0;
}
/* non-raid handling */
if (sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
if (mpt2sas_config_get_volume_handle(ioc, handle,
&volume_handle)) {
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT
"failure at %s:%d/%s()!\n", ioc->name,
__FILE__, __LINE__, __func__));
return 1;
}
if (volume_handle && mpt2sas_config_get_volume_wwid(ioc,
volume_handle, &volume_wwid)) {
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT
"failure at %s:%d/%s()!\n", ioc->name,
__FILE__, __LINE__, __func__));
return 1;
}
}
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
sas_device_priv_data->sas_target->sas_address);
if (!sas_device) {
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
dfailprintk(ioc, printk(MPT2SAS_WARN_FMT
"failure at %s:%d/%s()!\n", ioc->name, __FILE__,
__LINE__, __func__));
return 1;
}
sas_device->volume_handle = volume_handle;
sas_device->volume_wwid = volume_wwid;
if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET) {
qdepth = MPT2SAS_SAS_QUEUE_DEPTH;
ssp_target = 1;
ds = "SSP";
} else {
qdepth = MPT2SAS_SATA_QUEUE_DEPTH;
if (sas_device->device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
ds = "STP";
else if (sas_device->device_info &
MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
ds = "SATA";
}
sdev_printk(KERN_INFO, sdev, "%s: handle(0x%04x), "
"sas_addr(0x%016llx), phy(%d), device_name(0x%016llx)\n",
ds, sas_device->handle,
(unsigned long long)sas_device->sas_address,
sas_device->phy,
(unsigned long long)sas_device->device_name);
sdev_printk(KERN_INFO, sdev, "%s: "
"enclosure_logical_id(0x%016llx), slot(%d)\n", ds,
(unsigned long long) sas_device->enclosure_logical_id,
sas_device->slot);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (!ssp_target)
_scsih_display_sata_capabilities(ioc, handle, sdev);
_scsih_change_queue_depth(sdev, qdepth, SCSI_QDEPTH_DEFAULT);
if (ssp_target) {
sas_read_port_mode_page(sdev);
_scsih_enable_tlr(ioc, sdev);
}
return 0;
}
/**
* _scsih_bios_param - fetch head, sector, cylinder info for a disk
* @sdev: scsi device struct
* @bdev: pointer to block device context
* @capacity: device size (in 512 byte sectors)
* @params: three element array to place output:
* params[0] number of heads (max 255)
* params[1] number of sectors (max 63)
* params[2] number of cylinders
*
* Return nothing.
*/
static int
_scsih_bios_param(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int params[])
{
int heads;
int sectors;
sector_t cylinders;
ulong dummy;
heads = 64;
sectors = 32;
dummy = heads * sectors;
cylinders = capacity;
sector_div(cylinders, dummy);
/*
* Handle extended translation size for logical drives
* > 1Gb
*/
if ((ulong)capacity >= 0x200000) {
heads = 255;
sectors = 63;
dummy = heads * sectors;
cylinders = capacity;
sector_div(cylinders, dummy);
}
/* return result */
params[0] = heads;
params[1] = sectors;
params[2] = cylinders;
return 0;
}
/**
* _scsih_response_code - translation of device response code
* @ioc: per adapter object
* @response_code: response code returned by the device
*
* Return nothing.
*/
static void
_scsih_response_code(struct MPT2SAS_ADAPTER *ioc, u8 response_code)
{
char *desc;
switch (response_code) {
case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
desc = "task management request completed";
break;
case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
desc = "invalid frame";
break;
case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
desc = "task management request not supported";
break;
case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
desc = "task management request failed";
break;
case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
desc = "task management request succeeded";
break;
case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
desc = "invalid lun";
break;
case 0xA:
desc = "overlapped tag attempted";
break;
case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
desc = "task queued, however not sent to target";
break;
default:
desc = "unknown";
break;
}
printk(MPT2SAS_WARN_FMT "response_code(0x%01x): %s\n",
ioc->name, response_code, desc);
}
/**
* _scsih_tm_done - tm completion routine
* @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
* Context: none.
*
* The callback handler when using scsih_issue_tm.
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
static u8
_scsih_tm_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
{
MPI2DefaultReply_t *mpi_reply;
if (ioc->tm_cmds.status == MPT2_CMD_NOT_USED)
return 1;
if (ioc->tm_cmds.smid != smid)
return 1;
mpt2sas_base_flush_reply_queues(ioc);
ioc->tm_cmds.status |= MPT2_CMD_COMPLETE;
mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
if (mpi_reply) {
memcpy(ioc->tm_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
ioc->tm_cmds.status |= MPT2_CMD_REPLY_VALID;
}
ioc->tm_cmds.status &= ~MPT2_CMD_PENDING;
complete(&ioc->tm_cmds.done);
return 1;
}
/**
* mpt2sas_scsih_set_tm_flag - set per target tm_busy
* @ioc: per adapter object
* @handle: device handle
*
* During taskmangement request, we need to freeze the device queue.
*/
void
mpt2sas_scsih_set_tm_flag(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct scsi_device *sdev;
u8 skip = 0;
shost_for_each_device(sdev, ioc->shost) {
if (skip)
continue;
sas_device_priv_data = sdev->hostdata;
if (!sas_device_priv_data)
continue;
if (sas_device_priv_data->sas_target->handle == handle) {
sas_device_priv_data->sas_target->tm_busy = 1;
skip = 1;
ioc->ignore_loginfos = 1;
}
}
}
/**
* mpt2sas_scsih_clear_tm_flag - clear per target tm_busy
* @ioc: per adapter object
* @handle: device handle
*
* During taskmangement request, we need to freeze the device queue.
*/
void
mpt2sas_scsih_clear_tm_flag(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct scsi_device *sdev;
u8 skip = 0;
shost_for_each_device(sdev, ioc->shost) {
if (skip)
continue;
sas_device_priv_data = sdev->hostdata;
if (!sas_device_priv_data)
continue;
if (sas_device_priv_data->sas_target->handle == handle) {
sas_device_priv_data->sas_target->tm_busy = 0;
skip = 1;
ioc->ignore_loginfos = 0;
}
}
}
/**
* mpt2sas_scsih_issue_tm - main routine for sending tm requests
* @ioc: per adapter struct
* @device_handle: device handle
* @channel: the channel assigned by the OS
* @id: the id assigned by the OS
* @lun: lun number
* @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in mpi2_init.h)
* @smid_task: smid assigned to the task
* @timeout: timeout in seconds
* @serial_number: the serial_number from scmd
* @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
* Context: user
*
* A generic API for sending task management requests to firmware.
*
* The callback index is set inside `ioc->tm_cb_idx`.
*
* Return SUCCESS or FAILED.
*/
int
mpt2sas_scsih_issue_tm(struct MPT2SAS_ADAPTER *ioc, u16 handle, uint channel,
uint id, uint lun, u8 type, u16 smid_task, ulong timeout,
unsigned long serial_number, enum mutex_type m_type)
{
Mpi2SCSITaskManagementRequest_t *mpi_request;
Mpi2SCSITaskManagementReply_t *mpi_reply;
u16 smid = 0;
u32 ioc_state;
unsigned long timeleft;
struct scsiio_tracker *scsi_lookup = NULL;
int rc;
if (m_type == TM_MUTEX_ON)
mutex_lock(&ioc->tm_cmds.mutex);
if (ioc->tm_cmds.status != MPT2_CMD_NOT_USED) {
printk(MPT2SAS_INFO_FMT "%s: tm_cmd busy!!!\n",
__func__, ioc->name);
rc = FAILED;
goto err_out;
}
if (ioc->shost_recovery || ioc->remove_host ||
ioc->pci_error_recovery) {
printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
__func__, ioc->name);
rc = FAILED;
goto err_out;
}
ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
if (ioc_state & MPI2_DOORBELL_USED) {
dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
"active!\n", ioc->name));
rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
rc = (!rc) ? SUCCESS : FAILED;
goto err_out;
}
if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
mpt2sas_base_fault_info(ioc, ioc_state &
MPI2_DOORBELL_DATA_MASK);
rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
rc = (!rc) ? SUCCESS : FAILED;
goto err_out;
}
smid = mpt2sas_base_get_smid_hpr(ioc, ioc->tm_cb_idx);
if (!smid) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
rc = FAILED;
goto err_out;
}
if (type == MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK)
scsi_lookup = &ioc->scsi_lookup[smid_task - 1];
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "sending tm: handle(0x%04x),"
" task_type(0x%02x), smid(%d)\n", ioc->name, handle, type,
smid_task));
ioc->tm_cmds.status = MPT2_CMD_PENDING;
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
ioc->tm_cmds.smid = smid;
memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
memset(ioc->tm_cmds.reply, 0, sizeof(Mpi2SCSITaskManagementReply_t));
mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
mpi_request->DevHandle = cpu_to_le16(handle);
mpi_request->TaskType = type;
mpi_request->TaskMID = cpu_to_le16(smid_task);
int_to_scsilun(lun, (struct scsi_lun *)mpi_request->LUN);
mpt2sas_scsih_set_tm_flag(ioc, handle);
init_completion(&ioc->tm_cmds.done);
mpt2sas_base_put_smid_hi_priority(ioc, smid);
timeleft = wait_for_completion_timeout(&ioc->tm_cmds.done, timeout*HZ);
if (!(ioc->tm_cmds.status & MPT2_CMD_COMPLETE)) {
printk(MPT2SAS_ERR_FMT "%s: timeout\n",
ioc->name, __func__);
_debug_dump_mf(mpi_request,
sizeof(Mpi2SCSITaskManagementRequest_t)/4);
if (!(ioc->tm_cmds.status & MPT2_CMD_RESET)) {
rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
rc = (!rc) ? SUCCESS : FAILED;
ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
mpt2sas_scsih_clear_tm_flag(ioc, handle);
goto err_out;
}
}
if (ioc->tm_cmds.status & MPT2_CMD_REPLY_VALID) {
mpi_reply = ioc->tm_cmds.reply;
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "complete tm: "
"ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n",
ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
le32_to_cpu(mpi_reply->IOCLogInfo),
le32_to_cpu(mpi_reply->TerminationCount)));
if (ioc->logging_level & MPT_DEBUG_TM) {
_scsih_response_code(ioc, mpi_reply->ResponseCode);
if (mpi_reply->IOCStatus)
_debug_dump_mf(mpi_request,
sizeof(Mpi2SCSITaskManagementRequest_t)/4);
}
}
switch (type) {
case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
rc = SUCCESS;
if (scsi_lookup->scmd == NULL)
break;
rc = FAILED;
break;
case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
if (_scsih_scsi_lookup_find_by_target(ioc, id, channel))
rc = FAILED;
else
rc = SUCCESS;
break;
case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
case MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
if (_scsih_scsi_lookup_find_by_lun(ioc, id, lun, channel))
rc = FAILED;
else
rc = SUCCESS;
break;
case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
rc = SUCCESS;
break;
default:
rc = FAILED;
break;
}
mpt2sas_scsih_clear_tm_flag(ioc, handle);
ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
if (m_type == TM_MUTEX_ON)
mutex_unlock(&ioc->tm_cmds.mutex);
return rc;
err_out:
if (m_type == TM_MUTEX_ON)
mutex_unlock(&ioc->tm_cmds.mutex);
return rc;
}
/**
* _scsih_tm_display_info - displays info about the device
* @ioc: per adapter struct
* @scmd: pointer to scsi command object
*
* Called by task management callback handlers.
*/
static void
_scsih_tm_display_info(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd)
{
struct scsi_target *starget = scmd->device->sdev_target;
struct MPT2SAS_TARGET *priv_target = starget->hostdata;
struct _sas_device *sas_device = NULL;
unsigned long flags;
char *device_str = NULL;
if (!priv_target)
return;
if (ioc->hide_ir_msg)
device_str = "WarpDrive";
else
device_str = "volume";
scsi_print_command(scmd);
if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
starget_printk(KERN_INFO, starget, "%s handle(0x%04x), "
"%s wwid(0x%016llx)\n", device_str, priv_target->handle,
device_str, (unsigned long long)priv_target->sas_address);
} else {
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
priv_target->sas_address);
if (sas_device) {
if (priv_target->flags &
MPT_TARGET_FLAGS_RAID_COMPONENT) {
starget_printk(KERN_INFO, starget,
"volume handle(0x%04x), "
"volume wwid(0x%016llx)\n",
sas_device->volume_handle,
(unsigned long long)sas_device->volume_wwid);
}
starget_printk(KERN_INFO, starget,
"handle(0x%04x), sas_address(0x%016llx), phy(%d)\n",
sas_device->handle,
(unsigned long long)sas_device->sas_address,
sas_device->phy);
starget_printk(KERN_INFO, starget,
"enclosure_logical_id(0x%016llx), slot(%d)\n",
(unsigned long long)sas_device->enclosure_logical_id,
sas_device->slot);
}
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
}
/**
* _scsih_abort - eh threads main abort routine
* @scmd: pointer to scsi command object
*
* Returns SUCCESS if command aborted else FAILED
*/
static int
_scsih_abort(struct scsi_cmnd *scmd)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
struct MPT2SAS_DEVICE *sas_device_priv_data;
u16 smid;
u16 handle;
int r;
sdev_printk(KERN_INFO, scmd->device, "attempting task abort! "
"scmd(%p)\n", scmd);
_scsih_tm_display_info(ioc, scmd);
sas_device_priv_data = scmd->device->hostdata;
if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
"scmd(%p)\n", scmd);
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
r = SUCCESS;
goto out;
}
/* search for the command */
smid = _scsih_scsi_lookup_find_by_scmd(ioc, scmd);
if (!smid) {
scmd->result = DID_RESET << 16;
r = SUCCESS;
goto out;
}
/* for hidden raid components and volumes this is not supported */
if (sas_device_priv_data->sas_target->flags &
MPT_TARGET_FLAGS_RAID_COMPONENT ||
sas_device_priv_data->sas_target->flags & MPT_TARGET_FLAGS_VOLUME) {
scmd->result = DID_RESET << 16;
r = FAILED;
goto out;
}
mpt2sas_halt_firmware(ioc);
handle = sas_device_priv_data->sas_target->handle;
r = mpt2sas_scsih_issue_tm(ioc, handle, scmd->device->channel,
scmd->device->id, scmd->device->lun,
MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30,
scmd->serial_number, TM_MUTEX_ON);
out:
sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
return r;
}
/**
* _scsih_dev_reset - eh threads main device reset routine
* @scmd: pointer to scsi command object
*
* Returns SUCCESS if command aborted else FAILED
*/
static int
_scsih_dev_reset(struct scsi_cmnd *scmd)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct _sas_device *sas_device;
unsigned long flags;
u16 handle;
int r;
struct scsi_target *starget = scmd->device->sdev_target;
starget_printk(KERN_INFO, starget, "attempting device reset! "
"scmd(%p)\n", scmd);
_scsih_tm_display_info(ioc, scmd);
sas_device_priv_data = scmd->device->hostdata;
if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
starget_printk(KERN_INFO, starget, "device been deleted! "
"scmd(%p)\n", scmd);
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
r = SUCCESS;
goto out;
}
/* for hidden raid components obtain the volume_handle */
handle = 0;
if (sas_device_priv_data->sas_target->flags &
MPT_TARGET_FLAGS_RAID_COMPONENT) {
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc,
sas_device_priv_data->sas_target->handle);
if (sas_device)
handle = sas_device->volume_handle;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
} else
handle = sas_device_priv_data->sas_target->handle;
if (!handle) {
scmd->result = DID_RESET << 16;
r = FAILED;
goto out;
}
r = mpt2sas_scsih_issue_tm(ioc, handle, scmd->device->channel,
scmd->device->id, scmd->device->lun,
MPI2_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, 0, 30, 0,
TM_MUTEX_ON);
out:
sdev_printk(KERN_INFO, scmd->device, "device reset: %s scmd(%p)\n",
((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
return r;
}
/**
* _scsih_target_reset - eh threads main target reset routine
* @scmd: pointer to scsi command object
*
* Returns SUCCESS if command aborted else FAILED
*/
static int
_scsih_target_reset(struct scsi_cmnd *scmd)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct _sas_device *sas_device;
unsigned long flags;
u16 handle;
int r;
struct scsi_target *starget = scmd->device->sdev_target;
starget_printk(KERN_INFO, starget, "attempting target reset! "
"scmd(%p)\n", scmd);
_scsih_tm_display_info(ioc, scmd);
sas_device_priv_data = scmd->device->hostdata;
if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
starget_printk(KERN_INFO, starget, "target been deleted! "
"scmd(%p)\n", scmd);
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
r = SUCCESS;
goto out;
}
/* for hidden raid components obtain the volume_handle */
handle = 0;
if (sas_device_priv_data->sas_target->flags &
MPT_TARGET_FLAGS_RAID_COMPONENT) {
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc,
sas_device_priv_data->sas_target->handle);
if (sas_device)
handle = sas_device->volume_handle;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
} else
handle = sas_device_priv_data->sas_target->handle;
if (!handle) {
scmd->result = DID_RESET << 16;
r = FAILED;
goto out;
}
r = mpt2sas_scsih_issue_tm(ioc, handle, scmd->device->channel,
scmd->device->id, 0, MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 0,
30, 0, TM_MUTEX_ON);
out:
starget_printk(KERN_INFO, starget, "target reset: %s scmd(%p)\n",
((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
return r;
}
/**
* _scsih_host_reset - eh threads main host reset routine
* @scmd: pointer to scsi command object
*
* Returns SUCCESS if command aborted else FAILED
*/
static int
_scsih_host_reset(struct scsi_cmnd *scmd)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
int r, retval;
printk(MPT2SAS_INFO_FMT "attempting host reset! scmd(%p)\n",
ioc->name, scmd);
scsi_print_command(scmd);
retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
r = (retval < 0) ? FAILED : SUCCESS;
printk(MPT2SAS_INFO_FMT "host reset: %s scmd(%p)\n",
ioc->name, ((r == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
return r;
}
/**
* _scsih_fw_event_add - insert and queue up fw_event
* @ioc: per adapter object
* @fw_event: object describing the event
* Context: This function will acquire ioc->fw_event_lock.
*
* This adds the firmware event object into link list, then queues it up to
* be processed from user context.
*
* Return nothing.
*/
static void
_scsih_fw_event_add(struct MPT2SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
{
unsigned long flags;
if (ioc->firmware_event_thread == NULL)
return;
spin_lock_irqsave(&ioc->fw_event_lock, flags);
list_add_tail(&fw_event->list, &ioc->fw_event_list);
INIT_DELAYED_WORK(&fw_event->delayed_work, _firmware_event_work);
queue_delayed_work(ioc->firmware_event_thread,
&fw_event->delayed_work, 0);
spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
}
/**
* _scsih_fw_event_free - delete fw_event
* @ioc: per adapter object
* @fw_event: object describing the event
* Context: This function will acquire ioc->fw_event_lock.
*
* This removes firmware event object from link list, frees associated memory.
*
* Return nothing.
*/
static void
_scsih_fw_event_free(struct MPT2SAS_ADAPTER *ioc, struct fw_event_work
*fw_event)
{
unsigned long flags;
spin_lock_irqsave(&ioc->fw_event_lock, flags);
list_del(&fw_event->list);
kfree(fw_event->event_data);
kfree(fw_event);
spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
}
/**
* _scsih_error_recovery_delete_devices - remove devices not responding
* @ioc: per adapter object
*
* Return nothing.
*/
static void
_scsih_error_recovery_delete_devices(struct MPT2SAS_ADAPTER *ioc)
{
struct fw_event_work *fw_event;
if (ioc->is_driver_loading)
return;
fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC);
if (!fw_event)
return;
fw_event->event = MPT2SAS_REMOVE_UNRESPONDING_DEVICES;
fw_event->ioc = ioc;
_scsih_fw_event_add(ioc, fw_event);
}
/**
* mpt2sas_port_enable_complete - port enable completed (fake event)
* @ioc: per adapter object
*
* Return nothing.
*/
void
mpt2sas_port_enable_complete(struct MPT2SAS_ADAPTER *ioc)
{
struct fw_event_work *fw_event;
fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC);
if (!fw_event)
return;
fw_event->event = MPT2SAS_PORT_ENABLE_COMPLETE;
fw_event->ioc = ioc;
_scsih_fw_event_add(ioc, fw_event);
}
/**
* _scsih_fw_event_cleanup_queue - cleanup event queue
* @ioc: per adapter object
*
* Walk the firmware event queue, either killing timers, or waiting
* for outstanding events to complete
*
* Return nothing.
*/
static void
_scsih_fw_event_cleanup_queue(struct MPT2SAS_ADAPTER *ioc)
{
struct fw_event_work *fw_event, *next;
if (list_empty(&ioc->fw_event_list) ||
!ioc->firmware_event_thread || in_interrupt())
return;
list_for_each_entry_safe(fw_event, next, &ioc->fw_event_list, list) {
if (cancel_delayed_work(&fw_event->delayed_work)) {
_scsih_fw_event_free(ioc, fw_event);
continue;
}
fw_event->cancel_pending_work = 1;
}
}
/**
* _scsih_ublock_io_all_device - unblock every device
* @ioc: per adapter object
*
* change the device state from block to running
*/
static void
_scsih_ublock_io_all_device(struct MPT2SAS_ADAPTER *ioc)
{
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct scsi_device *sdev;
shost_for_each_device(sdev, ioc->shost) {
sas_device_priv_data = sdev->hostdata;
if (!sas_device_priv_data)
continue;
if (!sas_device_priv_data->block)
continue;
sas_device_priv_data->block = 0;
dewtprintk(ioc, sdev_printk(KERN_INFO, sdev, "device_running, "
"handle(0x%04x)\n",
sas_device_priv_data->sas_target->handle));
scsi_internal_device_unblock(sdev);
}
}
/**
* _scsih_ublock_io_device - set the device state to SDEV_RUNNING
* @ioc: per adapter object
* @handle: device handle
*
* During device pull we need to appropiately set the sdev state.
*/
static void
_scsih_ublock_io_device(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct scsi_device *sdev;
shost_for_each_device(sdev, ioc->shost) {
sas_device_priv_data = sdev->hostdata;
if (!sas_device_priv_data)
continue;
if (!sas_device_priv_data->block)
continue;
if (sas_device_priv_data->sas_target->handle == handle) {
dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
MPT2SAS_INFO_FMT "SDEV_RUNNING: "
"handle(0x%04x)\n", ioc->name, handle));
sas_device_priv_data->block = 0;
scsi_internal_device_unblock(sdev);
}
}
}
/**
* _scsih_block_io_all_device - set the device state to SDEV_BLOCK
* @ioc: per adapter object
* @handle: device handle
*
* During device pull we need to appropiately set the sdev state.
*/
static void
_scsih_block_io_all_device(struct MPT2SAS_ADAPTER *ioc)
{
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct scsi_device *sdev;
shost_for_each_device(sdev, ioc->shost) {
sas_device_priv_data = sdev->hostdata;
if (!sas_device_priv_data)
continue;
if (sas_device_priv_data->block)
continue;
sas_device_priv_data->block = 1;
dewtprintk(ioc, sdev_printk(KERN_INFO, sdev, "device_blocked, "
"handle(0x%04x)\n",
sas_device_priv_data->sas_target->handle));
scsi_internal_device_block(sdev);
}
}
/**
* _scsih_block_io_device - set the device state to SDEV_BLOCK
* @ioc: per adapter object
* @handle: device handle
*
* During device pull we need to appropiately set the sdev state.
*/
static void
_scsih_block_io_device(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct scsi_device *sdev;
shost_for_each_device(sdev, ioc->shost) {
sas_device_priv_data = sdev->hostdata;
if (!sas_device_priv_data)
continue;
if (sas_device_priv_data->block)
continue;
if (sas_device_priv_data->sas_target->handle == handle) {
dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
MPT2SAS_INFO_FMT "SDEV_BLOCK: "
"handle(0x%04x)\n", ioc->name, handle));
sas_device_priv_data->block = 1;
scsi_internal_device_block(sdev);
}
}
}
/**
* _scsih_block_io_to_children_attached_to_ex
* @ioc: per adapter object
* @sas_expander: the sas_device object
*
* This routine set sdev state to SDEV_BLOCK for all devices
* attached to this expander. This function called when expander is
* pulled.
*/
static void
_scsih_block_io_to_children_attached_to_ex(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;
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);
if (sas_device)
set_bit(sas_device->handle,
ioc->blocking_handles);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
}
list_for_each_entry(mpt2sas_port,
&sas_expander->sas_port_list, port_list) {
if (mpt2sas_port->remote_identify.device_type ==
SAS_EDGE_EXPANDER_DEVICE ||
mpt2sas_port->remote_identify.device_type ==
SAS_FANOUT_EXPANDER_DEVICE) {
expander_sibling =
mpt2sas_scsih_expander_find_by_sas_address(
ioc, mpt2sas_port->remote_identify.sas_address);
_scsih_block_io_to_children_attached_to_ex(ioc,
expander_sibling);
}
}
}
/**
* _scsih_block_io_to_children_attached_directly
* @ioc: per adapter object
* @event_data: topology change event data
*
* This routine set sdev state to SDEV_BLOCK for all devices
* direct attached during device pull.
*/
static void
_scsih_block_io_to_children_attached_directly(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataSasTopologyChangeList_t *event_data)
{
int i;
u16 handle;
u16 reason_code;
u8 phy_number;
for (i = 0; i < event_data->NumEntries; i++) {
handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
if (!handle)
continue;
phy_number = event_data->StartPhyNum + i;
reason_code = event_data->PHY[i].PhyStatus &
MPI2_EVENT_SAS_TOPO_RC_MASK;
if (reason_code == MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING)
_scsih_block_io_device(ioc, handle);
}
}
/**
* _scsih_tm_tr_send - send task management request
* @ioc: per adapter object
* @handle: device handle
* Context: interrupt time.
*
* This code is to initiate the device removal handshake protocol
* with controller firmware. This function will issue target reset
* using high priority request queue. It will send a sas iounit
* control request (MPI2_SAS_OP_REMOVE_DEVICE) from this completion.
*
* This is designed to send muliple task management request at the same
* time to the fifo. If the fifo is full, we will append the request,
* and process it in a future completion.
*/
static void
_scsih_tm_tr_send(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
Mpi2SCSITaskManagementRequest_t *mpi_request;
u16 smid;
struct _sas_device *sas_device;
struct MPT2SAS_TARGET *sas_target_priv_data = NULL;
u64 sas_address = 0;
unsigned long flags;
struct _tr_list *delayed_tr;
u32 ioc_state;
if (ioc->remove_host) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: host has been "
"removed: handle(0x%04x)\n", __func__, ioc->name, handle));
return;
} else if (ioc->pci_error_recovery) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: host in pci "
"error recovery: handle(0x%04x)\n", __func__, ioc->name,
handle));
return;
}
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: host is not "
"operational: handle(0x%04x)\n", __func__, ioc->name,
handle));
return;
}
/* if PD, then return */
if (test_bit(handle, ioc->pd_handles))
return;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
if (sas_device && sas_device->starget &&
sas_device->starget->hostdata) {
sas_target_priv_data = sas_device->starget->hostdata;
sas_target_priv_data->deleted = 1;
sas_address = sas_device->sas_address;
}
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (sas_target_priv_data) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "setting delete flag: "
"handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name, handle,
(unsigned long long)sas_address));
_scsih_ublock_io_device(ioc, handle);
sas_target_priv_data->handle = MPT2SAS_INVALID_DEVICE_HANDLE;
}
smid = mpt2sas_base_get_smid_hpr(ioc, ioc->tm_tr_cb_idx);
if (!smid) {
delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
if (!delayed_tr)
return;
INIT_LIST_HEAD(&delayed_tr->list);
delayed_tr->handle = handle;
list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"DELAYED:tr:handle(0x%04x), (open)\n",
ioc->name, handle));
return;
}
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "tr_send:handle(0x%04x), "
"(open), smid(%d), cb(%d)\n", ioc->name, handle, smid,
ioc->tm_tr_cb_idx));
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
mpi_request->DevHandle = cpu_to_le16(handle);
mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
mpt2sas_base_put_smid_hi_priority(ioc, smid);
}
/**
* _scsih_sas_control_complete - completion routine
* @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
* Context: interrupt time.
*
* This is the sas iounit control completion routine.
* This code is part of the code to initiate the device removal
* handshake protocol with controller firmware.
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
static u8
_scsih_sas_control_complete(struct MPT2SAS_ADAPTER *ioc, u16 smid,
u8 msix_index, u32 reply)
{
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
Mpi2SasIoUnitControlReply_t *mpi_reply =
mpt2sas_base_get_reply_virt_addr(ioc, reply);
#endif
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"sc_complete:handle(0x%04x), (open) "
"smid(%d), ioc_status(0x%04x), loginfo(0x%08x)\n",
ioc->name, le16_to_cpu(mpi_reply->DevHandle), smid,
le16_to_cpu(mpi_reply->IOCStatus),
le32_to_cpu(mpi_reply->IOCLogInfo)));
return 1;
}
/**
* _scsih_tm_tr_volume_send - send target reset request for volumes
* @ioc: per adapter object
* @handle: device handle
* Context: interrupt time.
*
* This is designed to send muliple task management request at the same
* time to the fifo. If the fifo is full, we will append the request,
* and process it in a future completion.
*/
static void
_scsih_tm_tr_volume_send(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
Mpi2SCSITaskManagementRequest_t *mpi_request;
u16 smid;
struct _tr_list *delayed_tr;
if (ioc->shost_recovery || ioc->remove_host ||
ioc->pci_error_recovery) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: host reset in "
"progress!\n", __func__, ioc->name));
return;
}
smid = mpt2sas_base_get_smid_hpr(ioc, ioc->tm_tr_volume_cb_idx);
if (!smid) {
delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
if (!delayed_tr)
return;
INIT_LIST_HEAD(&delayed_tr->list);
delayed_tr->handle = handle;
list_add_tail(&delayed_tr->list, &ioc->delayed_tr_volume_list);
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"DELAYED:tr:handle(0x%04x), (open)\n",
ioc->name, handle));
return;
}
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "tr_send:handle(0x%04x), "
"(open), smid(%d), cb(%d)\n", ioc->name, handle, smid,
ioc->tm_tr_volume_cb_idx));
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
memset(mpi_request, 0, sizeof(Mpi2SCSITaskManagementRequest_t));
mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
mpi_request->DevHandle = cpu_to_le16(handle);
mpi_request->TaskType = MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
mpt2sas_base_put_smid_hi_priority(ioc, smid);
}
/**
* _scsih_tm_volume_tr_complete - target reset completion
* @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
* Context: interrupt time.
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
static u8
_scsih_tm_volume_tr_complete(struct MPT2SAS_ADAPTER *ioc, u16 smid,
u8 msix_index, u32 reply)
{
u16 handle;
Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
Mpi2SCSITaskManagementReply_t *mpi_reply =
mpt2sas_base_get_reply_virt_addr(ioc, reply);
if (ioc->shost_recovery || ioc->remove_host ||
ioc->pci_error_recovery) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: host reset in "
"progress!\n", __func__, ioc->name));
return 1;
}
mpi_request_tm = mpt2sas_base_get_msg_frame(ioc, smid);
handle = le16_to_cpu(mpi_request_tm->DevHandle);
if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
dewtprintk(ioc, printk("spurious interrupt: "
"handle(0x%04x:0x%04x), smid(%d)!!!\n", handle,
le16_to_cpu(mpi_reply->DevHandle), smid));
return 0;
}
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
"loginfo(0x%08x), completed(%d)\n", ioc->name,
handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
le32_to_cpu(mpi_reply->IOCLogInfo),
le32_to_cpu(mpi_reply->TerminationCount)));
return _scsih_check_for_pending_tm(ioc, smid);
}
/**
* _scsih_tm_tr_complete -
* @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
* Context: interrupt time.
*
* This is the target reset completion routine.
* This code is part of the code to initiate the device removal
* handshake protocol with controller firmware.
* It will send a sas iounit control request (MPI2_SAS_OP_REMOVE_DEVICE)
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
static u8
_scsih_tm_tr_complete(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
u32 reply)
{
u16 handle;
Mpi2SCSITaskManagementRequest_t *mpi_request_tm;
Mpi2SCSITaskManagementReply_t *mpi_reply =
mpt2sas_base_get_reply_virt_addr(ioc, reply);
Mpi2SasIoUnitControlRequest_t *mpi_request;
u16 smid_sas_ctrl;
u32 ioc_state;
if (ioc->remove_host) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: host has been "
"removed\n", __func__, ioc->name));
return 1;
} else if (ioc->pci_error_recovery) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: host in pci "
"error recovery\n", __func__, ioc->name));
return 1;
}
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
if (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: host is not "
"operational\n", __func__, ioc->name));
return 1;
}
mpi_request_tm = mpt2sas_base_get_msg_frame(ioc, smid);
handle = le16_to_cpu(mpi_request_tm->DevHandle);
if (handle != le16_to_cpu(mpi_reply->DevHandle)) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "spurious interrupt: "
"handle(0x%04x:0x%04x), smid(%d)!!!\n", ioc->name, handle,
le16_to_cpu(mpi_reply->DevHandle), smid));
return 0;
}
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"tr_complete:handle(0x%04x), (open) smid(%d), ioc_status(0x%04x), "
"loginfo(0x%08x), completed(%d)\n", ioc->name,
handle, smid, le16_to_cpu(mpi_reply->IOCStatus),
le32_to_cpu(mpi_reply->IOCLogInfo),
le32_to_cpu(mpi_reply->TerminationCount)));
smid_sas_ctrl = mpt2sas_base_get_smid(ioc, ioc->tm_sas_control_cb_idx);
if (!smid_sas_ctrl) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
return 1;
}
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "sc_send:handle(0x%04x), "
"(open), smid(%d), cb(%d)\n", ioc->name, handle, smid_sas_ctrl,
ioc->tm_sas_control_cb_idx));
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid_sas_ctrl);
memset(mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
mpi_request->Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
mpi_request->Operation = MPI2_SAS_OP_REMOVE_DEVICE;
mpi_request->DevHandle = mpi_request_tm->DevHandle;
mpt2sas_base_put_smid_default(ioc, smid_sas_ctrl);
return _scsih_check_for_pending_tm(ioc, smid);
}
/**
* _scsih_check_for_pending_tm - check for pending task management
* @ioc: per adapter object
* @smid: system request message index
*
* This will check delayed target reset list, and feed the
* next reqeust.
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
static u8
_scsih_check_for_pending_tm(struct MPT2SAS_ADAPTER *ioc, u16 smid)
{
struct _tr_list *delayed_tr;
if (!list_empty(&ioc->delayed_tr_volume_list)) {
delayed_tr = list_entry(ioc->delayed_tr_volume_list.next,
struct _tr_list, list);
mpt2sas_base_free_smid(ioc, smid);
_scsih_tm_tr_volume_send(ioc, delayed_tr->handle);
list_del(&delayed_tr->list);
kfree(delayed_tr);
return 0;
}
if (!list_empty(&ioc->delayed_tr_list)) {
delayed_tr = list_entry(ioc->delayed_tr_list.next,
struct _tr_list, list);
mpt2sas_base_free_smid(ioc, smid);
_scsih_tm_tr_send(ioc, delayed_tr->handle);
list_del(&delayed_tr->list);
kfree(delayed_tr);
return 0;
}
return 1;
}
/**
* _scsih_check_topo_delete_events - sanity check on topo events
* @ioc: per adapter object
* @event_data: the event data payload
*
* This routine added to better handle cable breaker.
*
* This handles the case where driver receives multiple expander
* add and delete events in a single shot. When there is a delete event
* the routine will void any pending add events waiting in the event queue.
*
* Return nothing.
*/
static void
_scsih_check_topo_delete_events(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataSasTopologyChangeList_t *event_data)
{
struct fw_event_work *fw_event;
Mpi2EventDataSasTopologyChangeList_t *local_event_data;
u16 expander_handle;
struct _sas_node *sas_expander;
unsigned long flags;
int i, reason_code;
u16 handle;
for (i = 0 ; i < event_data->NumEntries; i++) {
handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
if (!handle)
continue;
reason_code = event_data->PHY[i].PhyStatus &
MPI2_EVENT_SAS_TOPO_RC_MASK;
if (reason_code == MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING)
_scsih_tm_tr_send(ioc, handle);
}
expander_handle = le16_to_cpu(event_data->ExpanderDevHandle);
if (expander_handle < ioc->sas_hba.num_phys) {
_scsih_block_io_to_children_attached_directly(ioc, event_data);
return;
}
if (event_data->ExpStatus ==
MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING) {
/* put expander attached devices into blocking state */
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_expander = mpt2sas_scsih_expander_find_by_handle(ioc,
expander_handle);
_scsih_block_io_to_children_attached_to_ex(ioc, sas_expander);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
do {
handle = find_first_bit(ioc->blocking_handles,
ioc->facts.MaxDevHandle);
if (handle < ioc->facts.MaxDevHandle)
_scsih_block_io_device(ioc, handle);
} while (test_and_clear_bit(handle, ioc->blocking_handles));
} else if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_RESPONDING)
_scsih_block_io_to_children_attached_directly(ioc, event_data);
if (event_data->ExpStatus != MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING)
return;
/* mark ignore flag for pending events */
spin_lock_irqsave(&ioc->fw_event_lock, flags);
list_for_each_entry(fw_event, &ioc->fw_event_list, list) {
if (fw_event->event != MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
fw_event->ignore)
continue;
local_event_data = fw_event->event_data;
if (local_event_data->ExpStatus ==
MPI2_EVENT_SAS_TOPO_ES_ADDED ||
local_event_data->ExpStatus ==
MPI2_EVENT_SAS_TOPO_ES_RESPONDING) {
if (le16_to_cpu(local_event_data->ExpanderDevHandle) ==
expander_handle) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"setting ignoring flag\n", ioc->name));
fw_event->ignore = 1;
}
}
}
spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
}
/**
* _scsih_set_volume_delete_flag - setting volume delete flag
* @ioc: per adapter object
* @handle: device handle
*
* This
* Return nothing.
*/
static void
_scsih_set_volume_delete_flag(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct _raid_device *raid_device;
struct MPT2SAS_TARGET *sas_target_priv_data;
unsigned long flags;
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_handle(ioc, handle);
if (raid_device && raid_device->starget &&
raid_device->starget->hostdata) {
sas_target_priv_data =
raid_device->starget->hostdata;
sas_target_priv_data->deleted = 1;
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"setting delete flag: handle(0x%04x), "
"wwid(0x%016llx)\n", ioc->name, handle,
(unsigned long long) raid_device->wwid));
}
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
}
/**
* _scsih_set_volume_handle_for_tr - set handle for target reset to volume
* @handle: input handle
* @a: handle for volume a
* @b: handle for volume b
*
* IR firmware only supports two raid volumes. The purpose of this
* routine is to set the volume handle in either a or b. When the given
* input handle is non-zero, or when a and b have not been set before.
*/
static void
_scsih_set_volume_handle_for_tr(u16 handle, u16 *a, u16 *b)
{
if (!handle || handle == *a || handle == *b)
return;
if (!*a)
*a = handle;
else if (!*b)
*b = handle;
}
/**
* _scsih_check_ir_config_unhide_events - check for UNHIDE events
* @ioc: per adapter object
* @event_data: the event data payload
* Context: interrupt time.
*
* This routine will send target reset to volume, followed by target
* resets to the PDs. This is called when a PD has been removed, or
* volume has been deleted or removed. When the target reset is sent
* to volume, the PD target resets need to be queued to start upon
* completion of the volume target reset.
*
* Return nothing.
*/
static void
_scsih_check_ir_config_unhide_events(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataIrConfigChangeList_t *event_data)
{
Mpi2EventIrConfigElement_t *element;
int i;
u16 handle, volume_handle, a, b;
struct _tr_list *delayed_tr;
a = 0;
b = 0;
if (ioc->is_warpdrive)
return;
/* Volume Resets for Deleted or Removed */
element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
for (i = 0; i < event_data->NumElements; i++, element++) {
if (element->ReasonCode ==
MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED ||
element->ReasonCode ==
MPI2_EVENT_IR_CHANGE_RC_REMOVED) {
volume_handle = le16_to_cpu(element->VolDevHandle);
_scsih_set_volume_delete_flag(ioc, volume_handle);
_scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
}
}
/* Volume Resets for UNHIDE events */
element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
for (i = 0; i < event_data->NumElements; i++, element++) {
if (le32_to_cpu(event_data->Flags) &
MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG)
continue;
if (element->ReasonCode == MPI2_EVENT_IR_CHANGE_RC_UNHIDE) {
volume_handle = le16_to_cpu(element->VolDevHandle);
_scsih_set_volume_handle_for_tr(volume_handle, &a, &b);
}
}
if (a)
_scsih_tm_tr_volume_send(ioc, a);
if (b)
_scsih_tm_tr_volume_send(ioc, b);
/* PD target resets */
element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
for (i = 0; i < event_data->NumElements; i++, element++) {
if (element->ReasonCode != MPI2_EVENT_IR_CHANGE_RC_UNHIDE)
continue;
handle = le16_to_cpu(element->PhysDiskDevHandle);
volume_handle = le16_to_cpu(element->VolDevHandle);
clear_bit(handle, ioc->pd_handles);
if (!volume_handle)
_scsih_tm_tr_send(ioc, handle);
else if (volume_handle == a || volume_handle == b) {
delayed_tr = kzalloc(sizeof(*delayed_tr), GFP_ATOMIC);
BUG_ON(!delayed_tr);
INIT_LIST_HEAD(&delayed_tr->list);
delayed_tr->handle = handle;
list_add_tail(&delayed_tr->list, &ioc->delayed_tr_list);
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"DELAYED:tr:handle(0x%04x), (open)\n", ioc->name,
handle));
} else
_scsih_tm_tr_send(ioc, handle);
}
}
/**
* _scsih_check_volume_delete_events - set delete flag for volumes
* @ioc: per adapter object
* @event_data: the event data payload
* Context: interrupt time.
*
* This will handle the case when the cable connected to entire volume is
* pulled. We will take care of setting the deleted flag so normal IO will
* not be sent.
*
* Return nothing.
*/
static void
_scsih_check_volume_delete_events(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataIrVolume_t *event_data)
{
u32 state;
if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
return;
state = le32_to_cpu(event_data->NewValue);
if (state == MPI2_RAID_VOL_STATE_MISSING || state ==
MPI2_RAID_VOL_STATE_FAILED)
_scsih_set_volume_delete_flag(ioc,
le16_to_cpu(event_data->VolDevHandle));
}
/**
* _scsih_flush_running_cmds - completing outstanding commands.
* @ioc: per adapter object
*
* The flushing out of all pending scmd commands following host reset,
* where all IO is dropped to the floor.
*
* Return nothing.
*/
static void
_scsih_flush_running_cmds(struct MPT2SAS_ADAPTER *ioc)
{
struct scsi_cmnd *scmd;
u16 smid;
u16 count = 0;
for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
if (!scmd)
continue;
count++;
mpt2sas_base_free_smid(ioc, smid);
scsi_dma_unmap(scmd);
if (ioc->pci_error_recovery)
scmd->result = DID_NO_CONNECT << 16;
else
scmd->result = DID_RESET << 16;
scmd->scsi_done(scmd);
}
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "completing %d cmds\n",
ioc->name, count));
}
/**
* _scsih_setup_eedp - setup MPI request for EEDP transfer
* @scmd: pointer to scsi command object
* @mpi_request: pointer to the SCSI_IO reqest message frame
*
* Supporting protection 1 and 3.
*
* Returns nothing
*/
static void
_scsih_setup_eedp(struct scsi_cmnd *scmd, Mpi2SCSIIORequest_t *mpi_request)
{
u16 eedp_flags;
unsigned char prot_op = scsi_get_prot_op(scmd);
unsigned char prot_type = scsi_get_prot_type(scmd);
if (prot_type == SCSI_PROT_DIF_TYPE0 || prot_op == SCSI_PROT_NORMAL)
return;
if (prot_op == SCSI_PROT_READ_STRIP)
eedp_flags = MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP;
else if (prot_op == SCSI_PROT_WRITE_INSERT)
eedp_flags = MPI2_SCSIIO_EEDPFLAGS_INSERT_OP;
else
return;
switch (prot_type) {
case SCSI_PROT_DIF_TYPE1:
case SCSI_PROT_DIF_TYPE2:
/*
* enable ref/guard checking
* auto increment ref tag
*/
eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
mpi_request->CDB.EEDP32.PrimaryReferenceTag =
cpu_to_be32(scsi_get_lba(scmd));
break;
case SCSI_PROT_DIF_TYPE3:
/*
* enable guard checking
*/
eedp_flags |= MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD;
break;
}
mpi_request->EEDPBlockSize = cpu_to_le32(scmd->device->sector_size);
mpi_request->EEDPFlags = cpu_to_le16(eedp_flags);
}
/**
* _scsih_eedp_error_handling - return sense code for EEDP errors
* @scmd: pointer to scsi command object
* @ioc_status: ioc status
*
* Returns nothing
*/
static void
_scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status)
{
u8 ascq;
u8 sk;
u8 host_byte;
switch (ioc_status) {
case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
ascq = 0x01;
break;
case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
ascq = 0x02;
break;
case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
ascq = 0x03;
break;
default:
ascq = 0x00;
break;
}
if (scmd->sc_data_direction == DMA_TO_DEVICE) {
sk = ILLEGAL_REQUEST;
host_byte = DID_ABORT;
} else {
sk = ABORTED_COMMAND;
host_byte = DID_OK;
}
scsi_build_sense_buffer(0, scmd->sense_buffer, sk, 0x10, ascq);
scmd->result = DRIVER_SENSE << 24 | (host_byte << 16) |
SAM_STAT_CHECK_CONDITION;
}
/**
* _scsih_scsi_direct_io_get - returns direct io flag
* @ioc: per adapter object
* @smid: system request message index
*
* Returns the smid stored scmd pointer.
*/
static inline u8
_scsih_scsi_direct_io_get(struct MPT2SAS_ADAPTER *ioc, u16 smid)
{
return ioc->scsi_lookup[smid - 1].direct_io;
}
/**
* _scsih_scsi_direct_io_set - sets direct io flag
* @ioc: per adapter object
* @smid: system request message index
* @direct_io: Zero or non-zero value to set in the direct_io flag
*
* Returns Nothing.
*/
static inline void
_scsih_scsi_direct_io_set(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 direct_io)
{
ioc->scsi_lookup[smid - 1].direct_io = direct_io;
}
/**
* _scsih_setup_direct_io - setup MPI request for WARPDRIVE Direct I/O
* @ioc: per adapter object
* @scmd: pointer to scsi command object
* @raid_device: pointer to raid device data structure
* @mpi_request: pointer to the SCSI_IO reqest message frame
* @smid: system request message index
*
* Returns nothing
*/
static void
_scsih_setup_direct_io(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
struct _raid_device *raid_device, Mpi2SCSIIORequest_t *mpi_request,
u16 smid)
{
u32 v_lba, p_lba, stripe_off, stripe_unit, column, io_size;
u32 stripe_sz, stripe_exp;
u8 num_pds, *cdb_ptr, i;
u8 cdb0 = scmd->cmnd[0];
u64 v_llba;
/*
* Try Direct I/O to RAID memeber disks
*/
if (cdb0 == READ_16 || cdb0 == READ_10 ||
cdb0 == WRITE_16 || cdb0 == WRITE_10) {
cdb_ptr = mpi_request->CDB.CDB32;
if ((cdb0 < READ_16) || !(cdb_ptr[2] | cdb_ptr[3] | cdb_ptr[4]
| cdb_ptr[5])) {
io_size = scsi_bufflen(scmd) >>
raid_device->block_exponent;
i = (cdb0 < READ_16) ? 2 : 6;
/* get virtual lba */
v_lba = be32_to_cpu(*(__be32 *)(&cdb_ptr[i]));
if (((u64)v_lba + (u64)io_size - 1) <=
(u32)raid_device->max_lba) {
stripe_sz = raid_device->stripe_sz;
stripe_exp = raid_device->stripe_exponent;
stripe_off = v_lba & (stripe_sz - 1);
/* Check whether IO falls within a stripe */
if ((stripe_off + io_size) <= stripe_sz) {
num_pds = raid_device->num_pds;
p_lba = v_lba >> stripe_exp;
stripe_unit = p_lba / num_pds;
column = p_lba % num_pds;
p_lba = (stripe_unit << stripe_exp) +
stripe_off;
mpi_request->DevHandle =
cpu_to_le16(raid_device->
pd_handle[column]);
(*(__be32 *)(&cdb_ptr[i])) =
cpu_to_be32(p_lba);
/*
* WD: To indicate this I/O is directI/O
*/
_scsih_scsi_direct_io_set(ioc, smid, 1);
}
}
} else {
io_size = scsi_bufflen(scmd) >>
raid_device->block_exponent;
/* get virtual lba */
v_llba = be64_to_cpu(*(__be64 *)(&cdb_ptr[2]));
if ((v_llba + (u64)io_size - 1) <=
raid_device->max_lba) {
stripe_sz = raid_device->stripe_sz;
stripe_exp = raid_device->stripe_exponent;
stripe_off = (u32) (v_llba & (stripe_sz - 1));
/* Check whether IO falls within a stripe */
if ((stripe_off + io_size) <= stripe_sz) {
num_pds = raid_device->num_pds;
p_lba = (u32)(v_llba >> stripe_exp);
stripe_unit = p_lba / num_pds;
column = p_lba % num_pds;
p_lba = (stripe_unit << stripe_exp) +
stripe_off;
mpi_request->DevHandle =
cpu_to_le16(raid_device->
pd_handle[column]);
(*(__be64 *)(&cdb_ptr[2])) =
cpu_to_be64((u64)p_lba);
/*
* WD: To indicate this I/O is directI/O
*/
_scsih_scsi_direct_io_set(ioc, smid, 1);
}
}
}
}
}
/**
* _scsih_qcmd - main scsi request entry point
* @scmd: pointer to scsi command object
* @done: function pointer to be invoked on completion
*
* The callback index is set inside `ioc->scsi_io_cb_idx`.
*
* Returns 0 on success. If there's a failure, return either:
* SCSI_MLQUEUE_DEVICE_BUSY if the device queue is full, or
* SCSI_MLQUEUE_HOST_BUSY if the entire host queue is full
*/
static int
_scsih_qcmd_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(scmd->device->host);
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct MPT2SAS_TARGET *sas_target_priv_data;
struct _raid_device *raid_device;
Mpi2SCSIIORequest_t *mpi_request;
u32 mpi_control;
u16 smid;
scmd->scsi_done = done;
sas_device_priv_data = scmd->device->hostdata;
if (!sas_device_priv_data || !sas_device_priv_data->sas_target) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
return 0;
}
if (ioc->pci_error_recovery || ioc->remove_host) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
return 0;
}
sas_target_priv_data = sas_device_priv_data->sas_target;
/* invalid device handle */
if (sas_target_priv_data->handle == MPT2SAS_INVALID_DEVICE_HANDLE) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
return 0;
}
/* host recovery or link resets sent via IOCTLs */
if (ioc->shost_recovery || ioc->ioc_link_reset_in_progress)
return SCSI_MLQUEUE_HOST_BUSY;
/* device busy with task management */
else if (sas_device_priv_data->block || sas_target_priv_data->tm_busy)
return SCSI_MLQUEUE_DEVICE_BUSY;
/* device has been deleted */
else if (sas_target_priv_data->deleted) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
return 0;
}
if (scmd->sc_data_direction == DMA_FROM_DEVICE)
mpi_control = MPI2_SCSIIO_CONTROL_READ;
else if (scmd->sc_data_direction == DMA_TO_DEVICE)
mpi_control = MPI2_SCSIIO_CONTROL_WRITE;
else
mpi_control = MPI2_SCSIIO_CONTROL_NODATATRANSFER;
/* set tags */
if (!(sas_device_priv_data->flags & MPT_DEVICE_FLAGS_INIT)) {
if (scmd->device->tagged_supported) {
if (scmd->device->ordered_tags)
mpi_control |= MPI2_SCSIIO_CONTROL_ORDEREDQ;
else
mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
} else
/* MPI Revision I (UNIT = 0xA) - removed MPI2_SCSIIO_CONTROL_UNTAGGED */
/* mpi_control |= MPI2_SCSIIO_CONTROL_UNTAGGED;
*/
mpi_control |= (0x500);
} else
mpi_control |= MPI2_SCSIIO_CONTROL_SIMPLEQ;
/* Make sure Device is not raid volume.
* We do not expose raid functionality to upper layer for warpdrive.
*/
if (!ioc->is_warpdrive && !_scsih_is_raid(&scmd->device->sdev_gendev) &&
sas_is_tlr_enabled(scmd->device) && scmd->cmd_len != 32)
mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
if (!smid) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
goto out;
}
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
memset(mpi_request, 0, sizeof(Mpi2SCSIIORequest_t));
_scsih_setup_eedp(scmd, mpi_request);
if (scmd->cmd_len == 32)
mpi_control |= 4 << MPI2_SCSIIO_CONTROL_ADDCDBLEN_SHIFT;
mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
if (sas_device_priv_data->sas_target->flags &
MPT_TARGET_FLAGS_RAID_COMPONENT)
mpi_request->Function = MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
else
mpi_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
mpi_request->DevHandle =
cpu_to_le16(sas_device_priv_data->sas_target->handle);
mpi_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
mpi_request->Control = cpu_to_le32(mpi_control);
mpi_request->IoFlags = cpu_to_le16(scmd->cmd_len);
mpi_request->MsgFlags = MPI2_SCSIIO_MSGFLAGS_SYSTEM_SENSE_ADDR;
mpi_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
mpi_request->SenseBufferLowAddress =
mpt2sas_base_get_sense_buffer_dma(ioc, smid);
mpi_request->SGLOffset0 = offsetof(Mpi2SCSIIORequest_t, SGL) / 4;
mpi_request->SGLFlags = cpu_to_le16(MPI2_SCSIIO_SGLFLAGS_TYPE_MPI +
MPI2_SCSIIO_SGLFLAGS_SYSTEM_ADDR);
mpi_request->VF_ID = 0; /* TODO */
mpi_request->VP_ID = 0;
int_to_scsilun(sas_device_priv_data->lun, (struct scsi_lun *)
mpi_request->LUN);
memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
if (!mpi_request->DataLength) {
mpt2sas_base_build_zero_len_sge(ioc, &mpi_request->SGL);
} else {
if (_scsih_build_scatter_gather(ioc, scmd, smid)) {
mpt2sas_base_free_smid(ioc, smid);
goto out;
}
}
raid_device = sas_target_priv_data->raid_device;
if (raid_device && raid_device->direct_io_enabled)
_scsih_setup_direct_io(ioc, scmd, raid_device, mpi_request,
smid);
if (likely(mpi_request->Function == MPI2_FUNCTION_SCSI_IO_REQUEST))
mpt2sas_base_put_smid_scsi_io(ioc, smid,
le16_to_cpu(mpi_request->DevHandle));
else
mpt2sas_base_put_smid_default(ioc, smid);
return 0;
out:
return SCSI_MLQUEUE_HOST_BUSY;
}
static DEF_SCSI_QCMD(_scsih_qcmd)
/**
* _scsih_normalize_sense - normalize descriptor and fixed format sense data
* @sense_buffer: sense data returned by target
* @data: normalized skey/asc/ascq
*
* Return nothing.
*/
static void
_scsih_normalize_sense(char *sense_buffer, struct sense_info *data)
{
if ((sense_buffer[0] & 0x7F) >= 0x72) {
/* descriptor format */
data->skey = sense_buffer[1] & 0x0F;
data->asc = sense_buffer[2];
data->ascq = sense_buffer[3];
} else {
/* fixed format */
data->skey = sense_buffer[2] & 0x0F;
data->asc = sense_buffer[12];
data->ascq = sense_buffer[13];
}
}
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
/**
* _scsih_scsi_ioc_info - translated non-successful SCSI_IO request
* @ioc: per adapter object
* @scmd: pointer to scsi command object
* @mpi_reply: reply mf payload returned from firmware
*
* scsi_status - SCSI Status code returned from target device
* scsi_state - state info associated with SCSI_IO determined by ioc
* ioc_status - ioc supplied status info
*
* Return nothing.
*/
static void
_scsih_scsi_ioc_info(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd *scmd,
Mpi2SCSIIOReply_t *mpi_reply, u16 smid)
{
u32 response_info;
u8 *response_bytes;
u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
MPI2_IOCSTATUS_MASK;
u8 scsi_state = mpi_reply->SCSIState;
u8 scsi_status = mpi_reply->SCSIStatus;
char *desc_ioc_state = NULL;
char *desc_scsi_status = NULL;
char *desc_scsi_state = ioc->tmp_string;
u32 log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
struct _sas_device *sas_device = NULL;
unsigned long flags;
struct scsi_target *starget = scmd->device->sdev_target;
struct MPT2SAS_TARGET *priv_target = starget->hostdata;
char *device_str = NULL;
if (!priv_target)
return;
if (ioc->hide_ir_msg)
device_str = "WarpDrive";
else
device_str = "volume";
if (log_info == 0x31170000)
return;
switch (ioc_status) {
case MPI2_IOCSTATUS_SUCCESS:
desc_ioc_state = "success";
break;
case MPI2_IOCSTATUS_INVALID_FUNCTION:
desc_ioc_state = "invalid function";
break;
case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
desc_ioc_state = "scsi recovered error";
break;
case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
desc_ioc_state = "scsi invalid dev handle";
break;
case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
desc_ioc_state = "scsi device not there";
break;
case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
desc_ioc_state = "scsi data overrun";
break;
case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
desc_ioc_state = "scsi data underrun";
break;
case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
desc_ioc_state = "scsi io data error";
break;
case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
desc_ioc_state = "scsi protocol error";
break;
case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
desc_ioc_state = "scsi task terminated";
break;
case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
desc_ioc_state = "scsi residual mismatch";
break;
case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
desc_ioc_state = "scsi task mgmt failed";
break;
case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
desc_ioc_state = "scsi ioc terminated";
break;
case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
desc_ioc_state = "scsi ext terminated";
break;
case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
desc_ioc_state = "eedp guard error";
break;
case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
desc_ioc_state = "eedp ref tag error";
break;
case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
desc_ioc_state = "eedp app tag error";
break;
default:
desc_ioc_state = "unknown";
break;
}
switch (scsi_status) {
case MPI2_SCSI_STATUS_GOOD:
desc_scsi_status = "good";
break;
case MPI2_SCSI_STATUS_CHECK_CONDITION:
desc_scsi_status = "check condition";
break;
case MPI2_SCSI_STATUS_CONDITION_MET:
desc_scsi_status = "condition met";
break;
case MPI2_SCSI_STATUS_BUSY:
desc_scsi_status = "busy";
break;
case MPI2_SCSI_STATUS_INTERMEDIATE:
desc_scsi_status = "intermediate";
break;
case MPI2_SCSI_STATUS_INTERMEDIATE_CONDMET:
desc_scsi_status = "intermediate condmet";
break;
case MPI2_SCSI_STATUS_RESERVATION_CONFLICT:
desc_scsi_status = "reservation conflict";
break;
case MPI2_SCSI_STATUS_COMMAND_TERMINATED:
desc_scsi_status = "command terminated";
break;
case MPI2_SCSI_STATUS_TASK_SET_FULL:
desc_scsi_status = "task set full";
break;
case MPI2_SCSI_STATUS_ACA_ACTIVE:
desc_scsi_status = "aca active";
break;
case MPI2_SCSI_STATUS_TASK_ABORTED:
desc_scsi_status = "task aborted";
break;
default:
desc_scsi_status = "unknown";
break;
}
desc_scsi_state[0] = '\0';
if (!scsi_state)
desc_scsi_state = " ";
if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
strcat(desc_scsi_state, "response info ");
if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
strcat(desc_scsi_state, "state terminated ");
if (scsi_state & MPI2_SCSI_STATE_NO_SCSI_STATUS)
strcat(desc_scsi_state, "no status ");
if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_FAILED)
strcat(desc_scsi_state, "autosense failed ");
if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID)
strcat(desc_scsi_state, "autosense valid ");
scsi_print_command(scmd);
if (priv_target->flags & MPT_TARGET_FLAGS_VOLUME) {
printk(MPT2SAS_WARN_FMT "\t%s wwid(0x%016llx)\n", ioc->name,
device_str, (unsigned long long)priv_target->sas_address);
} else {
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
priv_target->sas_address);
if (sas_device) {
printk(MPT2SAS_WARN_FMT "\tsas_address(0x%016llx), "
"phy(%d)\n", ioc->name, sas_device->sas_address,
sas_device->phy);
printk(MPT2SAS_WARN_FMT
"\tenclosure_logical_id(0x%016llx), slot(%d)\n",
ioc->name, sas_device->enclosure_logical_id,
sas_device->slot);
}
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
printk(MPT2SAS_WARN_FMT "\thandle(0x%04x), ioc_status(%s)(0x%04x), "
"smid(%d)\n", ioc->name, le16_to_cpu(mpi_reply->DevHandle),
desc_ioc_state, ioc_status, smid);
printk(MPT2SAS_WARN_FMT "\trequest_len(%d), underflow(%d), "
"resid(%d)\n", ioc->name, scsi_bufflen(scmd), scmd->underflow,
scsi_get_resid(scmd));
printk(MPT2SAS_WARN_FMT "\ttag(%d), transfer_count(%d), "
"sc->result(0x%08x)\n", ioc->name, le16_to_cpu(mpi_reply->TaskTag),
le32_to_cpu(mpi_reply->TransferCount), scmd->result);
printk(MPT2SAS_WARN_FMT "\tscsi_status(%s)(0x%02x), "
"scsi_state(%s)(0x%02x)\n", ioc->name, desc_scsi_status,
scsi_status, desc_scsi_state, scsi_state);
if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
struct sense_info data;
_scsih_normalize_sense(scmd->sense_buffer, &data);
printk(MPT2SAS_WARN_FMT "\t[sense_key,asc,ascq]: "
"[0x%02x,0x%02x,0x%02x], count(%d)\n", ioc->name, data.skey,
data.asc, data.ascq, le32_to_cpu(mpi_reply->SenseCount));
}
if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID) {
response_info = le32_to_cpu(mpi_reply->ResponseInfo);
response_bytes = (u8 *)&response_info;
_scsih_response_code(ioc, response_bytes[0]);
}
}
#endif
/**
* _scsih_turn_on_fault_led - illuminate Fault LED
* @ioc: per adapter object
* @handle: device handle
* Context: process
*
* Return nothing.
*/
static void
_scsih_turn_on_fault_led(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
Mpi2SepReply_t mpi_reply;
Mpi2SepRequest_t mpi_request;
memset(&mpi_request, 0, sizeof(Mpi2SepRequest_t));
mpi_request.Function = MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
mpi_request.Action = MPI2_SEP_REQ_ACTION_WRITE_STATUS;
mpi_request.SlotStatus =
cpu_to_le32(MPI2_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
mpi_request.DevHandle = cpu_to_le16(handle);
mpi_request.Flags = MPI2_SEP_REQ_FLAGS_DEVHANDLE_ADDRESS;
if ((mpt2sas_base_scsi_enclosure_processor(ioc, &mpi_reply,
&mpi_request)) != 0) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n", ioc->name,
__FILE__, __LINE__, __func__);
return;
}
if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "enclosure_processor: "
"ioc_status (0x%04x), loginfo(0x%08x)\n", ioc->name,
le16_to_cpu(mpi_reply.IOCStatus),
le32_to_cpu(mpi_reply.IOCLogInfo)));
return;
}
}
/**
* _scsih_send_event_to_turn_on_fault_led - fire delayed event
* @ioc: per adapter object
* @handle: device handle
* Context: interrupt.
*
* Return nothing.
*/
static void
_scsih_send_event_to_turn_on_fault_led(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct fw_event_work *fw_event;
fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC);
if (!fw_event)
return;
fw_event->event = MPT2SAS_TURN_ON_FAULT_LED;
fw_event->device_handle = handle;
fw_event->ioc = ioc;
_scsih_fw_event_add(ioc, fw_event);
}
/**
* _scsih_smart_predicted_fault - process smart errors
* @ioc: per adapter object
* @handle: device handle
* Context: interrupt.
*
* Return nothing.
*/
static void
_scsih_smart_predicted_fault(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct scsi_target *starget;
struct MPT2SAS_TARGET *sas_target_priv_data;
Mpi2EventNotificationReply_t *event_reply;
Mpi2EventDataSasDeviceStatusChange_t *event_data;
struct _sas_device *sas_device;
ssize_t sz;
unsigned long flags;
/* only handle non-raid devices */
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
if (!sas_device) {
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return;
}
starget = sas_device->starget;
sas_target_priv_data = starget->hostdata;
if ((sas_target_priv_data->flags & MPT_TARGET_FLAGS_RAID_COMPONENT) ||
((sas_target_priv_data->flags & MPT_TARGET_FLAGS_VOLUME))) {
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return;
}
starget_printk(KERN_WARNING, starget, "predicted fault\n");
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (ioc->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM)
_scsih_send_event_to_turn_on_fault_led(ioc, handle);
/* insert into event log */
sz = offsetof(Mpi2EventNotificationReply_t, EventData) +
sizeof(Mpi2EventDataSasDeviceStatusChange_t);
event_reply = kzalloc(sz, GFP_ATOMIC);
if (!event_reply) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
event_reply->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
event_reply->Event =
cpu_to_le16(MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
event_reply->MsgLength = sz/4;
event_reply->EventDataLength =
cpu_to_le16(sizeof(Mpi2EventDataSasDeviceStatusChange_t)/4);
event_data = (Mpi2EventDataSasDeviceStatusChange_t *)
event_reply->EventData;
event_data->ReasonCode = MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA;
event_data->ASC = 0x5D;
event_data->DevHandle = cpu_to_le16(handle);
event_data->SASAddress = cpu_to_le64(sas_target_priv_data->sas_address);
mpt2sas_ctl_add_to_event_log(ioc, event_reply);
kfree(event_reply);
}
/**
* _scsih_io_done - scsi request callback
* @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
*
* Callback handler when using _scsih_qcmd.
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
static u8
_scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
{
Mpi2SCSIIORequest_t *mpi_request;
Mpi2SCSIIOReply_t *mpi_reply;
struct scsi_cmnd *scmd;
u16 ioc_status;
u32 xfer_cnt;
u8 scsi_state;
u8 scsi_status;
u32 log_info;
struct MPT2SAS_DEVICE *sas_device_priv_data;
u32 response_code = 0;
unsigned long flags;
mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
scmd = _scsih_scsi_lookup_get_clear(ioc, smid);
if (scmd == NULL)
return 1;
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
if (mpi_reply == NULL) {
scmd->result = DID_OK << 16;
goto out;
}
sas_device_priv_data = scmd->device->hostdata;
if (!sas_device_priv_data || !sas_device_priv_data->sas_target ||
sas_device_priv_data->sas_target->deleted) {
scmd->result = DID_NO_CONNECT << 16;
goto out;
}
ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
/*
* WARPDRIVE: If direct_io is set then it is directIO,
* the failed direct I/O should be redirected to volume
*/
if (_scsih_scsi_direct_io_get(ioc, smid) &&
((ioc_status & MPI2_IOCSTATUS_MASK)
!= MPI2_IOCSTATUS_SCSI_TASK_TERMINATED)) {
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
ioc->scsi_lookup[smid - 1].scmd = scmd;
_scsih_scsi_direct_io_set(ioc, smid, 0);
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
memcpy(mpi_request->CDB.CDB32, scmd->cmnd, scmd->cmd_len);
mpi_request->DevHandle =
cpu_to_le16(sas_device_priv_data->sas_target->handle);
mpt2sas_base_put_smid_scsi_io(ioc, smid,
sas_device_priv_data->sas_target->handle);
return 0;
}
/* turning off TLR */
scsi_state = mpi_reply->SCSIState;
if (scsi_state & MPI2_SCSI_STATE_RESPONSE_INFO_VALID)
response_code =
le32_to_cpu(mpi_reply->ResponseInfo) & 0xFF;
if (!sas_device_priv_data->tlr_snoop_check) {
sas_device_priv_data->tlr_snoop_check++;
/* Make sure Device is not raid volume.
* We do not expose raid functionality to upper layer for warpdrive.
*/
if (!ioc->is_warpdrive && !_scsih_is_raid(&scmd->device->sdev_gendev) &&
sas_is_tlr_enabled(scmd->device) &&
response_code == MPI2_SCSITASKMGMT_RSP_INVALID_FRAME) {
sas_disable_tlr(scmd->device);
sdev_printk(KERN_INFO, scmd->device, "TLR disabled\n");
}
}
xfer_cnt = le32_to_cpu(mpi_reply->TransferCount);
scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_cnt);
if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
log_info = le32_to_cpu(mpi_reply->IOCLogInfo);
else
log_info = 0;
ioc_status &= MPI2_IOCSTATUS_MASK;
scsi_status = mpi_reply->SCSIStatus;
if (ioc_status == MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
(scsi_status == MPI2_SCSI_STATUS_BUSY ||
scsi_status == MPI2_SCSI_STATUS_RESERVATION_CONFLICT ||
scsi_status == MPI2_SCSI_STATUS_TASK_SET_FULL)) {
ioc_status = MPI2_IOCSTATUS_SUCCESS;
}
if (scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID) {
struct sense_info data;
const void *sense_data = mpt2sas_base_get_sense_buffer(ioc,
smid);
u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE,
le32_to_cpu(mpi_reply->SenseCount));
memcpy(scmd->sense_buffer, sense_data, sz);
_scsih_normalize_sense(scmd->sense_buffer, &data);
/* failure prediction threshold exceeded */
if (data.asc == 0x5D)
_scsih_smart_predicted_fault(ioc,
le16_to_cpu(mpi_reply->DevHandle));
}
switch (ioc_status) {
case MPI2_IOCSTATUS_BUSY:
case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
scmd->result = SAM_STAT_BUSY;
break;
case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
scmd->result = DID_NO_CONNECT << 16;
break;
case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
if (sas_device_priv_data->block) {
scmd->result = DID_TRANSPORT_DISRUPTED << 16;
goto out;
}
scmd->result = DID_SOFT_ERROR << 16;
break;
case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
scmd->result = DID_RESET << 16;
break;
case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
if ((xfer_cnt == 0) || (scmd->underflow > xfer_cnt))
scmd->result = DID_SOFT_ERROR << 16;
else
scmd->result = (DID_OK << 16) | scsi_status;
break;
case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
scmd->result = (DID_OK << 16) | scsi_status;
if ((scsi_state & MPI2_SCSI_STATE_AUTOSENSE_VALID))
break;
if (xfer_cnt < scmd->underflow) {
if (scsi_status == SAM_STAT_BUSY)
scmd->result = SAM_STAT_BUSY;
else
scmd->result = DID_SOFT_ERROR << 16;
} else if (scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
MPI2_SCSI_STATE_NO_SCSI_STATUS))
scmd->result = DID_SOFT_ERROR << 16;
else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
scmd->result = DID_RESET << 16;
else if (!xfer_cnt && scmd->cmnd[0] == REPORT_LUNS) {
mpi_reply->SCSIState = MPI2_SCSI_STATE_AUTOSENSE_VALID;
mpi_reply->SCSIStatus = SAM_STAT_CHECK_CONDITION;
scmd->result = (DRIVER_SENSE << 24) |
SAM_STAT_CHECK_CONDITION;
scmd->sense_buffer[0] = 0x70;
scmd->sense_buffer[2] = ILLEGAL_REQUEST;
scmd->sense_buffer[12] = 0x20;
scmd->sense_buffer[13] = 0;
}
break;
case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
scsi_set_resid(scmd, 0);
case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
case MPI2_IOCSTATUS_SUCCESS:
scmd->result = (DID_OK << 16) | scsi_status;
if (response_code ==
MPI2_SCSITASKMGMT_RSP_INVALID_FRAME ||
(scsi_state & (MPI2_SCSI_STATE_AUTOSENSE_FAILED |
MPI2_SCSI_STATE_NO_SCSI_STATUS)))
scmd->result = DID_SOFT_ERROR << 16;
else if (scsi_state & MPI2_SCSI_STATE_TERMINATED)
scmd->result = DID_RESET << 16;
break;
case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
_scsih_eedp_error_handling(scmd, ioc_status);
break;
case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
case MPI2_IOCSTATUS_INVALID_FUNCTION:
case MPI2_IOCSTATUS_INVALID_SGL:
case MPI2_IOCSTATUS_INTERNAL_ERROR:
case MPI2_IOCSTATUS_INVALID_FIELD:
case MPI2_IOCSTATUS_INVALID_STATE:
case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
default:
scmd->result = DID_SOFT_ERROR << 16;
break;
}
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
if (scmd->result && (ioc->logging_level & MPT_DEBUG_REPLY))
_scsih_scsi_ioc_info(ioc , scmd, mpi_reply, smid);
#endif
out:
scsi_dma_unmap(scmd);
scmd->scsi_done(scmd);
return 1;
}
/**
* _scsih_sas_host_refresh - refreshing sas host object contents
* @ioc: per adapter object
* Context: user
*
* During port enable, fw will send topology events for every device. Its
* possible that the handles may change from the previous setting, so this
* code keeping handles updating if changed.
*
* Return nothing.
*/
static void
_scsih_sas_host_refresh(struct MPT2SAS_ADAPTER *ioc)
{
u16 sz;
u16 ioc_status;
int i;
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",
ioc->name, (unsigned long long)ioc->sas_hba.sas_address));
sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys
* sizeof(Mpi2SasIOUnit0PhyData_t));
sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
if (!sas_iounit_pg0) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
if ((mpt2sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
sas_iounit_pg0, sz)) != 0)
goto out;
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
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, link_rate);
}
out:
kfree(sas_iounit_pg0);
}
/**
* _scsih_sas_host_add - create sas host object
* @ioc: per adapter object
*
* Creating host side data object, stored in ioc->sas_hba
*
* Return nothing.
*/
static void
_scsih_sas_host_add(struct MPT2SAS_ADAPTER *ioc)
{
int i;
Mpi2ConfigReply_t mpi_reply;
Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
Mpi2SasPhyPage0_t phy_pg0;
Mpi2SasDevicePage0_t sas_device_pg0;
Mpi2SasEnclosurePage0_t enclosure_pg0;
u16 ioc_status;
u16 sz;
u16 device_missing_delay;
mpt2sas_config_get_number_hba_phys(ioc, &ioc->sas_hba.num_phys);
if (!ioc->sas_hba.num_phys) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
/* sas_iounit page 0 */
sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
sizeof(Mpi2SasIOUnit0PhyData_t));
sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
if (!sas_iounit_pg0) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
if ((mpt2sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
sas_iounit_pg0, sz))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
/* sas_iounit page 1 */
sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
sizeof(Mpi2SasIOUnit1PhyData_t));
sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
if (!sas_iounit_pg1) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
sas_iounit_pg1, sz))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
ioc->io_missing_delay =
le16_to_cpu(sas_iounit_pg1->IODeviceMissingDelay);
device_missing_delay =
le16_to_cpu(sas_iounit_pg1->ReportDeviceMissingDelay);
if (device_missing_delay & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
ioc->device_missing_delay = (device_missing_delay &
MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
else
ioc->device_missing_delay = device_missing_delay &
MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
ioc->sas_hba.parent_dev = &ioc->shost->shost_gendev;
ioc->sas_hba.phy = kcalloc(ioc->sas_hba.num_phys,
sizeof(struct _sas_phy), GFP_KERNEL);
if (!ioc->sas_hba.phy) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
if ((mpt2sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
i))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
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;
ioc->sas_hba.phy[i].phy_id = i;
mpt2sas_transport_add_host_phy(ioc, &ioc->sas_hba.phy[i],
phy_pg0, ioc->sas_hba.parent_dev);
}
if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, ioc->sas_hba.handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
ioc->sas_hba.enclosure_handle =
le16_to_cpu(sas_device_pg0.EnclosureHandle);
ioc->sas_hba.sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
printk(MPT2SAS_INFO_FMT "host_add: handle(0x%04x), "
"sas_addr(0x%016llx), phys(%d)\n", ioc->name, ioc->sas_hba.handle,
(unsigned long long) ioc->sas_hba.sas_address,
ioc->sas_hba.num_phys) ;
if (ioc->sas_hba.enclosure_handle) {
if (!(mpt2sas_config_get_enclosure_pg0(ioc, &mpi_reply,
&enclosure_pg0,
MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
ioc->sas_hba.enclosure_handle))) {
ioc->sas_hba.enclosure_logical_id =
le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
}
}
out:
kfree(sas_iounit_pg1);
kfree(sas_iounit_pg0);
}
/**
* _scsih_expander_add - creating expander object
* @ioc: per adapter object
* @handle: expander handle
*
* Creating expander object, stored in ioc->sas_expander_list.
*
* Return 0 for success, else error.
*/
static int
_scsih_expander_add(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct _sas_node *sas_expander;
Mpi2ConfigReply_t mpi_reply;
Mpi2ExpanderPage0_t expander_pg0;
Mpi2ExpanderPage1_t expander_pg1;
Mpi2SasEnclosurePage0_t enclosure_pg0;
u32 ioc_status;
u16 parent_handle;
u64 sas_address, sas_address_parent = 0;
int i;
unsigned long flags;
struct _sas_port *mpt2sas_port = NULL;
int rc = 0;
if (!handle)
return -1;
if (ioc->shost_recovery || ioc->pci_error_recovery)
return -1;
if ((mpt2sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
MPI2_SAS_EXPAND_PGAD_FORM_HNDL, handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
/* handle out of order topology events */
parent_handle = le16_to_cpu(expander_pg0.ParentDevHandle);
if (_scsih_get_sas_address(ioc, parent_handle, &sas_address_parent)
!= 0) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
if (sas_address_parent != ioc->sas_hba.sas_address) {
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
sas_address_parent);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (!sas_expander) {
rc = _scsih_expander_add(ioc, parent_handle);
if (rc != 0)
return rc;
}
}
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_address = le64_to_cpu(expander_pg0.SASAddress);
sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
sas_address);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (sas_expander)
return 0;
sas_expander = kzalloc(sizeof(struct _sas_node),
GFP_KERNEL);
if (!sas_expander) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
sas_expander->handle = handle;
sas_expander->num_phys = expander_pg0.NumPhys;
sas_expander->sas_address_parent = sas_address_parent;
sas_expander->sas_address = sas_address;
printk(MPT2SAS_INFO_FMT "expander_add: handle(0x%04x),"
" parent(0x%04x), sas_addr(0x%016llx), phys(%d)\n", ioc->name,
handle, parent_handle, (unsigned long long)
sas_expander->sas_address, sas_expander->num_phys);
if (!sas_expander->num_phys)
goto out_fail;
sas_expander->phy = kcalloc(sas_expander->num_phys,
sizeof(struct _sas_phy), GFP_KERNEL);
if (!sas_expander->phy) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -1;
goto out_fail;
}
INIT_LIST_HEAD(&sas_expander->sas_port_list);
mpt2sas_port = mpt2sas_transport_port_add(ioc, handle,
sas_address_parent);
if (!mpt2sas_port) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -1;
goto out_fail;
}
sas_expander->parent_dev = &mpt2sas_port->rphy->dev;
for (i = 0 ; i < sas_expander->num_phys ; i++) {
if ((mpt2sas_config_get_expander_pg1(ioc, &mpi_reply,
&expander_pg1, i, handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -1;
goto out_fail;
}
sas_expander->phy[i].handle = handle;
sas_expander->phy[i].phy_id = i;
if ((mpt2sas_transport_add_expander_phy(ioc,
&sas_expander->phy[i], expander_pg1,
sas_expander->parent_dev))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
rc = -1;
goto out_fail;
}
}
if (sas_expander->enclosure_handle) {
if (!(mpt2sas_config_get_enclosure_pg0(ioc, &mpi_reply,
&enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
sas_expander->enclosure_handle))) {
sas_expander->enclosure_logical_id =
le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
}
}
_scsih_expander_node_add(ioc, sas_expander);
return 0;
out_fail:
if (mpt2sas_port)
mpt2sas_transport_port_remove(ioc, sas_expander->sas_address,
sas_address_parent);
kfree(sas_expander);
return rc;
}
/**
* _scsih_done - scsih callback handler.
* @ioc: per adapter object
* @smid: system request message index
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
*
* Callback handler when sending internal generated message frames.
* The callback index passed is `ioc->scsih_cb_idx`
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
static u8
_scsih_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
{
MPI2DefaultReply_t *mpi_reply;
mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
if (ioc->scsih_cmds.status == MPT2_CMD_NOT_USED)
return 1;
if (ioc->scsih_cmds.smid != smid)
return 1;
ioc->scsih_cmds.status |= MPT2_CMD_COMPLETE;
if (mpi_reply) {
memcpy(ioc->scsih_cmds.reply, mpi_reply,
mpi_reply->MsgLength*4);
ioc->scsih_cmds.status |= MPT2_CMD_REPLY_VALID;
}
ioc->scsih_cmds.status &= ~MPT2_CMD_PENDING;
complete(&ioc->scsih_cmds.done);
return 1;
}
/**
* mpt2sas_expander_remove - removing expander object
* @ioc: per adapter object
* @sas_address: expander sas_address
*
* Return nothing.
*/
void
mpt2sas_expander_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address)
{
struct _sas_node *sas_expander;
unsigned long flags;
if (ioc->shost_recovery)
return;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
sas_address);
if (sas_expander)
list_del(&sas_expander->list);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (sas_expander)
_scsih_expander_node_remove(ioc, sas_expander);
}
/**
* _scsih_check_access_status - check access flags
* @ioc: per adapter object
* @sas_address: sas address
* @handle: sas device handle
* @access_flags: errors returned during discovery of the device
*
* Return 0 for success, else failure
*/
static u8
_scsih_check_access_status(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
u16 handle, u8 access_status)
{
u8 rc = 1;
char *desc = NULL;
switch (access_status) {
case MPI2_SAS_DEVICE0_ASTATUS_NO_ERRORS:
case MPI2_SAS_DEVICE0_ASTATUS_SATA_NEEDS_INITIALIZATION:
rc = 0;
break;
case MPI2_SAS_DEVICE0_ASTATUS_SATA_CAPABILITY_FAILED:
desc = "sata capability failed";
break;
case MPI2_SAS_DEVICE0_ASTATUS_SATA_AFFILIATION_CONFLICT:
desc = "sata affiliation conflict";
break;
case MPI2_SAS_DEVICE0_ASTATUS_ROUTE_NOT_ADDRESSABLE:
desc = "route not addressable";
break;
case MPI2_SAS_DEVICE0_ASTATUS_SMP_ERROR_NOT_ADDRESSABLE:
desc = "smp error not addressable";
break;
case MPI2_SAS_DEVICE0_ASTATUS_DEVICE_BLOCKED:
desc = "device blocked";
break;
case MPI2_SAS_DEVICE0_ASTATUS_SATA_INIT_FAILED:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_UNKNOWN:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_AFFILIATION_CONFLICT:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_DIAG:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_IDENTIFICATION:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_CHECK_POWER:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_PIO_SN:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_MDMA_SN:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_UDMA_SN:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_ZONING_VIOLATION:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_NOT_ADDRESSABLE:
case MPI2_SAS_DEVICE0_ASTATUS_SIF_MAX:
desc = "sata initialization failed";
break;
default:
desc = "unknown";
break;
}
if (!rc)
return 0;
printk(MPT2SAS_ERR_FMT "discovery errors(%s): sas_address(0x%016llx), "
"handle(0x%04x)\n", ioc->name, desc,
(unsigned long long)sas_address, handle);
return rc;
}
static void
_scsih_check_device(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
Mpi2ConfigReply_t mpi_reply;
Mpi2SasDevicePage0_t sas_device_pg0;
struct _sas_device *sas_device;
u32 ioc_status;
unsigned long flags;
u64 sas_address;
struct scsi_target *starget;
struct MPT2SAS_TARGET *sas_target_priv_data;
u32 device_info;
if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle)))
return;
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
return;
/* check if this is end device */
device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
if (!(_scsih_is_end_device(device_info)))
return;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
sas_address);
if (!sas_device) {
printk(MPT2SAS_ERR_FMT "device is not present "
"handle(0x%04x), no sas_device!!!\n", ioc->name, handle);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return;
}
if (unlikely(sas_device->handle != handle)) {
starget = sas_device->starget;
sas_target_priv_data = starget->hostdata;
starget_printk(KERN_INFO, starget, "handle changed from(0x%04x)"
" to (0x%04x)!!!\n", sas_device->handle, handle);
sas_target_priv_data->handle = handle;
sas_device->handle = handle;
}
/* check if device is present */
if (!(le16_to_cpu(sas_device_pg0.Flags) &
MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
printk(MPT2SAS_ERR_FMT "device is not present "
"handle(0x%04x), flags!!!\n", ioc->name, handle);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return;
}
/* check if there were any issues with discovery */
if (_scsih_check_access_status(ioc, sas_address, handle,
sas_device_pg0.AccessStatus)) {
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return;
}
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
_scsih_ublock_io_device(ioc, handle);
}
/**
* _scsih_add_device - creating sas device object
* @ioc: per adapter object
* @handle: sas device handle
* @phy_num: phy number end device attached to
* @is_pd: is this hidden raid component
*
* Creating end device object, stored in ioc->sas_device_list.
*
* Returns 0 for success, non-zero for failure.
*/
static int
_scsih_add_device(struct MPT2SAS_ADAPTER *ioc, u16 handle, u8 phy_num, u8 is_pd)
{
Mpi2ConfigReply_t mpi_reply;
Mpi2SasDevicePage0_t sas_device_pg0;
Mpi2SasEnclosurePage0_t enclosure_pg0;
struct _sas_device *sas_device;
u32 ioc_status;
__le64 sas_address;
u32 device_info;
unsigned long flags;
if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
/* check if device is present */
if (!(le16_to_cpu(sas_device_pg0.Flags) &
MPI2_SAS_DEVICE0_FLAGS_DEVICE_PRESENT)) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
printk(MPT2SAS_ERR_FMT "Flags = 0x%04x\n",
ioc->name, le16_to_cpu(sas_device_pg0.Flags));
return -1;
}
/* check if there were any issues with discovery */
if (_scsih_check_access_status(ioc, sas_address, handle,
sas_device_pg0.AccessStatus))
return -1;
/* check if this is end device */
device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
if (!(_scsih_is_end_device(device_info))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
sas_address);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (sas_device)
return 0;
sas_device = kzalloc(sizeof(struct _sas_device),
GFP_KERNEL);
if (!sas_device) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return -1;
}
sas_device->handle = handle;
if (_scsih_get_sas_address(ioc, le16_to_cpu
(sas_device_pg0.ParentDevHandle),
&sas_device->sas_address_parent) != 0)
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
sas_device->enclosure_handle =
le16_to_cpu(sas_device_pg0.EnclosureHandle);
sas_device->slot =
le16_to_cpu(sas_device_pg0.Slot);
sas_device->device_info = device_info;
sas_device->sas_address = sas_address;
sas_device->phy = sas_device_pg0.PhyNum;
/* get enclosure_logical_id */
if (sas_device->enclosure_handle && !(mpt2sas_config_get_enclosure_pg0(
ioc, &mpi_reply, &enclosure_pg0, MPI2_SAS_ENCLOS_PGAD_FORM_HANDLE,
sas_device->enclosure_handle)))
sas_device->enclosure_logical_id =
le64_to_cpu(enclosure_pg0.EnclosureLogicalID);
/* get device name */
sas_device->device_name = le64_to_cpu(sas_device_pg0.DeviceName);
if (ioc->wait_for_discovery_to_complete)
_scsih_sas_device_init_add(ioc, sas_device);
else
_scsih_sas_device_add(ioc, sas_device);
return 0;
}
/**
* _scsih_remove_device - removing sas device object
* @ioc: per adapter object
* @sas_device_delete: the sas_device object
*
* Return nothing.
*/
static void
_scsih_remove_device(struct MPT2SAS_ADAPTER *ioc,
struct _sas_device *sas_device)
{
struct MPT2SAS_TARGET *sas_target_priv_data;
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter: "
"handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name, __func__,
sas_device->handle, (unsigned long long)
sas_device->sas_address));
if (sas_device->starget && sas_device->starget->hostdata) {
sas_target_priv_data = sas_device->starget->hostdata;
sas_target_priv_data->deleted = 1;
_scsih_ublock_io_device(ioc, sas_device->handle);
sas_target_priv_data->handle =
MPT2SAS_INVALID_DEVICE_HANDLE;
}
if (!ioc->hide_drives)
mpt2sas_transport_port_remove(ioc,
sas_device->sas_address,
sas_device->sas_address_parent);
printk(MPT2SAS_INFO_FMT "removing handle(0x%04x), sas_addr"
"(0x%016llx)\n", ioc->name, sas_device->handle,
(unsigned long long) sas_device->sas_address);
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit: "
"handle(0x%04x), sas_addr(0x%016llx)\n", ioc->name, __func__,
sas_device->handle, (unsigned long long)
sas_device->sas_address));
kfree(sas_device);
}
/**
* _scsih_device_remove_by_handle - removing device object by handle
* @ioc: per adapter object
* @handle: device handle
*
* Return nothing.
*/
static void
_scsih_device_remove_by_handle(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct _sas_device *sas_device;
unsigned long flags;
if (ioc->shost_recovery)
return;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
if (sas_device)
list_del(&sas_device->list);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (sas_device)
_scsih_remove_device(ioc, sas_device);
}
/**
* mpt2sas_device_remove_by_sas_address - removing device object by sas address
* @ioc: per adapter object
* @sas_address: device sas_address
*
* Return nothing.
*/
void
mpt2sas_device_remove_by_sas_address(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)
list_del(&sas_device->list);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (sas_device)
_scsih_remove_device(ioc, sas_device);
}
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
/**
* _scsih_sas_topology_change_event_debug - debug for topology event
* @ioc: per adapter object
* @event_data: event data payload
* Context: user.
*/
static void
_scsih_sas_topology_change_event_debug(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataSasTopologyChangeList_t *event_data)
{
int i;
u16 handle;
u16 reason_code;
u8 phy_number;
char *status_str = NULL;
u8 link_rate, prev_link_rate;
switch (event_data->ExpStatus) {
case MPI2_EVENT_SAS_TOPO_ES_ADDED:
status_str = "add";
break;
case MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
status_str = "remove";
break;
case MPI2_EVENT_SAS_TOPO_ES_RESPONDING:
case 0:
status_str = "responding";
break;
case MPI2_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
status_str = "remove delay";
break;
default:
status_str = "unknown status";
break;
}
printk(MPT2SAS_INFO_FMT "sas topology change: (%s)\n",
ioc->name, status_str);
printk(KERN_INFO "\thandle(0x%04x), enclosure_handle(0x%04x) "
"start_phy(%02d), count(%d)\n",
le16_to_cpu(event_data->ExpanderDevHandle),
le16_to_cpu(event_data->EnclosureHandle),
event_data->StartPhyNum, event_data->NumEntries);
for (i = 0; i < event_data->NumEntries; i++) {
handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
if (!handle)
continue;
phy_number = event_data->StartPhyNum + i;
reason_code = event_data->PHY[i].PhyStatus &
MPI2_EVENT_SAS_TOPO_RC_MASK;
switch (reason_code) {
case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
status_str = "target add";
break;
case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
status_str = "target remove";
break;
case MPI2_EVENT_SAS_TOPO_RC_DELAY_NOT_RESPONDING:
status_str = "delay target remove";
break;
case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
status_str = "link rate change";
break;
case MPI2_EVENT_SAS_TOPO_RC_NO_CHANGE:
status_str = "target responding";
break;
default:
status_str = "unknown";
break;
}
link_rate = event_data->PHY[i].LinkRate >> 4;
prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
printk(KERN_INFO "\tphy(%02d), attached_handle(0x%04x): %s:"
" link rate: new(0x%02x), old(0x%02x)\n", phy_number,
handle, status_str, link_rate, prev_link_rate);
}
}
#endif
/**
* _scsih_sas_topology_change_event - handle topology changes
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
*/
static void
_scsih_sas_topology_change_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
int i;
u16 parent_handle, handle;
u16 reason_code;
u8 phy_number, max_phys;
struct _sas_node *sas_expander;
u64 sas_address;
unsigned long flags;
u8 link_rate, prev_link_rate;
Mpi2EventDataSasTopologyChangeList_t *event_data = fw_event->event_data;
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
_scsih_sas_topology_change_event_debug(ioc, event_data);
#endif
if (ioc->remove_host || ioc->pci_error_recovery)
return;
if (!ioc->sas_hba.num_phys)
_scsih_sas_host_add(ioc);
else
_scsih_sas_host_refresh(ioc);
if (fw_event->ignore) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "ignoring expander "
"event\n", ioc->name));
return;
}
parent_handle = le16_to_cpu(event_data->ExpanderDevHandle);
/* handle expander add */
if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_ADDED)
if (_scsih_expander_add(ioc, parent_handle) != 0)
return;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_expander = mpt2sas_scsih_expander_find_by_handle(ioc,
parent_handle);
if (sas_expander) {
sas_address = sas_expander->sas_address;
max_phys = sas_expander->num_phys;
} else if (parent_handle < ioc->sas_hba.num_phys) {
sas_address = ioc->sas_hba.sas_address;
max_phys = ioc->sas_hba.num_phys;
} else {
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return;
}
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
/* handle siblings events */
for (i = 0; i < event_data->NumEntries; i++) {
if (fw_event->ignore) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "ignoring "
"expander event\n", ioc->name));
return;
}
if (ioc->shost_recovery || ioc->remove_host ||
ioc->pci_error_recovery)
return;
phy_number = event_data->StartPhyNum + i;
if (phy_number >= max_phys)
continue;
reason_code = event_data->PHY[i].PhyStatus &
MPI2_EVENT_SAS_TOPO_RC_MASK;
if ((event_data->PHY[i].PhyStatus &
MPI2_EVENT_SAS_TOPO_PHYSTATUS_VACANT) && (reason_code !=
MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING))
continue;
handle = le16_to_cpu(event_data->PHY[i].AttachedDevHandle);
if (!handle)
continue;
link_rate = event_data->PHY[i].LinkRate >> 4;
prev_link_rate = event_data->PHY[i].LinkRate & 0xF;
switch (reason_code) {
case MPI2_EVENT_SAS_TOPO_RC_PHY_CHANGED:
if (ioc->shost_recovery)
break;
if (link_rate == prev_link_rate)
break;
mpt2sas_transport_update_links(ioc, sas_address,
handle, phy_number, link_rate);
if (link_rate < MPI2_SAS_NEG_LINK_RATE_1_5)
break;
_scsih_check_device(ioc, handle);
break;
case MPI2_EVENT_SAS_TOPO_RC_TARG_ADDED:
if (ioc->shost_recovery)
break;
mpt2sas_transport_update_links(ioc, sas_address,
handle, phy_number, link_rate);
_scsih_add_device(ioc, handle, phy_number, 0);
break;
case MPI2_EVENT_SAS_TOPO_RC_TARG_NOT_RESPONDING:
_scsih_device_remove_by_handle(ioc, handle);
break;
}
}
/* handle expander removal */
if (event_data->ExpStatus == MPI2_EVENT_SAS_TOPO_ES_NOT_RESPONDING &&
sas_expander)
mpt2sas_expander_remove(ioc, sas_address);
}
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
/**
* _scsih_sas_device_status_change_event_debug - debug for device event
* @event_data: event data payload
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_device_status_change_event_debug(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataSasDeviceStatusChange_t *event_data)
{
char *reason_str = NULL;
switch (event_data->ReasonCode) {
case MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA:
reason_str = "smart data";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_UNSUPPORTED:
reason_str = "unsupported device discovered";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET:
reason_str = "internal device reset";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_TASK_ABORT_INTERNAL:
reason_str = "internal task abort";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_ABORT_TASK_SET_INTERNAL:
reason_str = "internal task abort set";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_CLEAR_TASK_SET_INTERNAL:
reason_str = "internal clear task set";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_QUERY_TASK_INTERNAL:
reason_str = "internal query task";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_SATA_INIT_FAILURE:
reason_str = "sata init failure";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET:
reason_str = "internal device reset complete";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_TASK_ABORT_INTERNAL:
reason_str = "internal task abort complete";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_ASYNC_NOTIFICATION:
reason_str = "internal async notification";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_EXPANDER_REDUCED_FUNCTIONALITY:
reason_str = "expander reduced functionality";
break;
case MPI2_EVENT_SAS_DEV_STAT_RC_CMP_EXPANDER_REDUCED_FUNCTIONALITY:
reason_str = "expander reduced functionality complete";
break;
default:
reason_str = "unknown reason";
break;
}
printk(MPT2SAS_INFO_FMT "device status change: (%s)\n"
"\thandle(0x%04x), sas address(0x%016llx), tag(%d)",
ioc->name, reason_str, le16_to_cpu(event_data->DevHandle),
(unsigned long long)le64_to_cpu(event_data->SASAddress),
le16_to_cpu(event_data->TaskTag));
if (event_data->ReasonCode == MPI2_EVENT_SAS_DEV_STAT_RC_SMART_DATA)
printk(MPT2SAS_INFO_FMT ", ASC(0x%x), ASCQ(0x%x)\n", ioc->name,
event_data->ASC, event_data->ASCQ);
printk(KERN_INFO "\n");
}
#endif
/**
* _scsih_sas_device_status_change_event - handle device status change
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_device_status_change_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
struct MPT2SAS_TARGET *target_priv_data;
struct _sas_device *sas_device;
u64 sas_address;
unsigned long flags;
Mpi2EventDataSasDeviceStatusChange_t *event_data =
fw_event->event_data;
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
_scsih_sas_device_status_change_event_debug(ioc,
event_data);
#endif
/* In MPI Revision K (0xC), the internal device reset complete was
* implemented, so avoid setting tm_busy flag for older firmware.
*/
if ((ioc->facts.HeaderVersion >> 8) < 0xC)
return;
if (event_data->ReasonCode !=
MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET &&
event_data->ReasonCode !=
MPI2_EVENT_SAS_DEV_STAT_RC_CMP_INTERNAL_DEV_RESET)
return;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_address = le64_to_cpu(event_data->SASAddress);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
sas_address);
if (!sas_device || !sas_device->starget) {
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return;
}
target_priv_data = sas_device->starget->hostdata;
if (!target_priv_data) {
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
return;
}
if (event_data->ReasonCode ==
MPI2_EVENT_SAS_DEV_STAT_RC_INTERNAL_DEVICE_RESET)
target_priv_data->tm_busy = 1;
else
target_priv_data->tm_busy = 0;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
/**
* _scsih_sas_enclosure_dev_status_change_event_debug - debug for enclosure event
* @ioc: per adapter object
* @event_data: event data payload
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_enclosure_dev_status_change_event_debug(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataSasEnclDevStatusChange_t *event_data)
{
char *reason_str = NULL;
switch (event_data->ReasonCode) {
case MPI2_EVENT_SAS_ENCL_RC_ADDED:
reason_str = "enclosure add";
break;
case MPI2_EVENT_SAS_ENCL_RC_NOT_RESPONDING:
reason_str = "enclosure remove";
break;
default:
reason_str = "unknown reason";
break;
}
printk(MPT2SAS_INFO_FMT "enclosure status change: (%s)\n"
"\thandle(0x%04x), enclosure logical id(0x%016llx)"
" number slots(%d)\n", ioc->name, reason_str,
le16_to_cpu(event_data->EnclosureHandle),
(unsigned long long)le64_to_cpu(event_data->EnclosureLogicalID),
le16_to_cpu(event_data->StartSlot));
}
#endif
/**
* _scsih_sas_enclosure_dev_status_change_event - handle enclosure events
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_enclosure_dev_status_change_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
_scsih_sas_enclosure_dev_status_change_event_debug(ioc,
fw_event->event_data);
#endif
}
/**
* _scsih_sas_broadcast_primitive_event - handle broadcast events
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_broadcast_primitive_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
struct scsi_cmnd *scmd;
struct scsi_device *sdev;
u16 smid, handle;
u32 lun;
struct MPT2SAS_DEVICE *sas_device_priv_data;
u32 termination_count;
u32 query_count;
Mpi2SCSITaskManagementReply_t *mpi_reply;
Mpi2EventDataSasBroadcastPrimitive_t *event_data = fw_event->event_data;
u16 ioc_status;
unsigned long flags;
int r;
u8 max_retries = 0;
u8 task_abort_retries;
mutex_lock(&ioc->tm_cmds.mutex);
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter: phy number(%d), "
"width(%d)\n", ioc->name, __func__, event_data->PhyNum,
event_data->PortWidth));
_scsih_block_io_all_device(ioc);
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
mpi_reply = ioc->tm_cmds.reply;
broadcast_aen_retry:
/* sanity checks for retrying this loop */
if (max_retries++ == 5) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: giving up\n",
ioc->name, __func__));
goto out;
} else if (max_retries > 1)
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %d retry\n",
ioc->name, __func__, max_retries - 1));
termination_count = 0;
query_count = 0;
for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
if (ioc->shost_recovery)
goto out;
scmd = _scsih_scsi_lookup_get(ioc, smid);
if (!scmd)
continue;
sdev = scmd->device;
sas_device_priv_data = sdev->hostdata;
if (!sas_device_priv_data || !sas_device_priv_data->sas_target)
continue;
/* skip hidden raid components */
if (sas_device_priv_data->sas_target->flags &
MPT_TARGET_FLAGS_RAID_COMPONENT)
continue;
/* skip volumes */
if (sas_device_priv_data->sas_target->flags &
MPT_TARGET_FLAGS_VOLUME)
continue;
handle = sas_device_priv_data->sas_target->handle;
lun = sas_device_priv_data->lun;
query_count++;
if (ioc->shost_recovery)
goto out;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
r = mpt2sas_scsih_issue_tm(ioc, handle, 0, 0, lun,
MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK, smid, 30, 0,
TM_MUTEX_OFF);
if (r == FAILED) {
sdev_printk(KERN_WARNING, sdev,
"mpt2sas_scsih_issue_tm: FAILED when sending "
"QUERY_TASK: scmd(%p)\n", scmd);
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
goto broadcast_aen_retry;
}
ioc_status = le16_to_cpu(mpi_reply->IOCStatus)
& MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
sdev_printk(KERN_WARNING, sdev, "query task: FAILED "
"with IOCSTATUS(0x%04x), scmd(%p)\n", ioc_status,
scmd);
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
goto broadcast_aen_retry;
}
/* see if IO is still owned by IOC and target */
if (mpi_reply->ResponseCode ==
MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED ||
mpi_reply->ResponseCode ==
MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC) {
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
continue;
}
task_abort_retries = 0;
tm_retry:
if (task_abort_retries++ == 60) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"%s: ABORT_TASK: giving up\n", ioc->name,
__func__));
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
goto broadcast_aen_retry;
}
if (ioc->shost_recovery)
goto out_no_lock;
r = mpt2sas_scsih_issue_tm(ioc, handle, sdev->channel, sdev->id,
sdev->lun, MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, smid, 30,
scmd->serial_number, TM_MUTEX_OFF);
if (r == FAILED) {
sdev_printk(KERN_WARNING, sdev,
"mpt2sas_scsih_issue_tm: ABORT_TASK: FAILED : "
"scmd(%p)\n", scmd);
goto tm_retry;
}
if (task_abort_retries > 1)
sdev_printk(KERN_WARNING, sdev,
"mpt2sas_scsih_issue_tm: ABORT_TASK: RETRIES (%d):"
" scmd(%p)\n",
task_abort_retries - 1, scmd);
termination_count += le32_to_cpu(mpi_reply->TerminationCount);
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
}
if (ioc->broadcast_aen_pending) {
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: loop back due to"
" pending AEN\n", ioc->name, __func__));
ioc->broadcast_aen_pending = 0;
goto broadcast_aen_retry;
}
out:
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
out_no_lock:
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT
"%s - exit, query_count = %d termination_count = %d\n",
ioc->name, __func__, query_count, termination_count));
ioc->broadcast_aen_busy = 0;
if (!ioc->shost_recovery)
_scsih_ublock_io_all_device(ioc);
mutex_unlock(&ioc->tm_cmds.mutex);
}
/**
* _scsih_sas_discovery_event - handle discovery events
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_discovery_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
Mpi2EventDataSasDiscovery_t *event_data = fw_event->event_data;
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) {
printk(MPT2SAS_INFO_FMT "discovery event: (%s)", ioc->name,
(event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
"start" : "stop");
if (event_data->DiscoveryStatus)
printk("discovery_status(0x%08x)",
le32_to_cpu(event_data->DiscoveryStatus));
printk("\n");
}
#endif
if (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED &&
!ioc->sas_hba.num_phys)
_scsih_sas_host_add(ioc);
}
/**
* _scsih_reprobe_lun - reprobing lun
* @sdev: scsi device struct
* @no_uld_attach: sdev->no_uld_attach flag setting
*
**/
static void
_scsih_reprobe_lun(struct scsi_device *sdev, void *no_uld_attach)
{
int rc;
sdev->no_uld_attach = no_uld_attach ? 1 : 0;
sdev_printk(KERN_INFO, sdev, "%s raid component\n",
sdev->no_uld_attach ? "hidding" : "exposing");
rc = scsi_device_reprobe(sdev);
}
/**
* _scsih_sas_volume_add - add new volume
* @ioc: per adapter object
* @element: IR config element data
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_volume_add(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventIrConfigElement_t *element)
{
struct _raid_device *raid_device;
unsigned long flags;
u64 wwid;
u16 handle = le16_to_cpu(element->VolDevHandle);
int rc;
mpt2sas_config_get_volume_wwid(ioc, handle, &wwid);
if (!wwid) {
printk(MPT2SAS_ERR_FMT
"failure at %s:%d/%s()!\n", ioc->name,
__FILE__, __LINE__, __func__);
return;
}
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_wwid(ioc, wwid);
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
if (raid_device)
return;
raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
if (!raid_device) {
printk(MPT2SAS_ERR_FMT
"failure at %s:%d/%s()!\n", ioc->name,
__FILE__, __LINE__, __func__);
return;
}
raid_device->id = ioc->sas_id++;
raid_device->channel = RAID_CHANNEL;
raid_device->handle = handle;
raid_device->wwid = wwid;
_scsih_raid_device_add(ioc, raid_device);
if (!ioc->wait_for_discovery_to_complete) {
rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
raid_device->id, 0);
if (rc)
_scsih_raid_device_remove(ioc, raid_device);
} else {
spin_lock_irqsave(&ioc->raid_device_lock, flags);
_scsih_determine_boot_device(ioc, raid_device, 1);
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
}
}
/**
* _scsih_sas_volume_delete - delete volume
* @ioc: per adapter object
* @handle: volume device handle
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_volume_delete(struct MPT2SAS_ADAPTER *ioc, u16 handle)
{
struct _raid_device *raid_device;
unsigned long flags;
struct MPT2SAS_TARGET *sas_target_priv_data;
struct scsi_target *starget = NULL;
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_handle(ioc, handle);
if (raid_device) {
if (raid_device->starget) {
starget = raid_device->starget;
sas_target_priv_data = starget->hostdata;
sas_target_priv_data->deleted = 1;
}
printk(MPT2SAS_INFO_FMT "removing handle(0x%04x), wwid"
"(0x%016llx)\n", ioc->name, raid_device->handle,
(unsigned long long) raid_device->wwid);
list_del(&raid_device->list);
kfree(raid_device);
}
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
if (starget)
scsi_remove_target(&starget->dev);
}
/**
* _scsih_sas_pd_expose - expose pd component to /dev/sdX
* @ioc: per adapter object
* @element: IR config element data
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_pd_expose(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventIrConfigElement_t *element)
{
struct _sas_device *sas_device;
struct scsi_target *starget = NULL;
struct MPT2SAS_TARGET *sas_target_priv_data;
unsigned long flags;
u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
if (sas_device) {
sas_device->volume_handle = 0;
sas_device->volume_wwid = 0;
clear_bit(handle, ioc->pd_handles);
if (sas_device->starget && sas_device->starget->hostdata) {
starget = sas_device->starget;
sas_target_priv_data = starget->hostdata;
sas_target_priv_data->flags &=
~MPT_TARGET_FLAGS_RAID_COMPONENT;
}
}
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (!sas_device)
return;
/* exposing raid component */
if (starget)
starget_for_each_device(starget, NULL, _scsih_reprobe_lun);
}
/**
* _scsih_sas_pd_hide - hide pd component from /dev/sdX
* @ioc: per adapter object
* @element: IR config element data
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_pd_hide(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventIrConfigElement_t *element)
{
struct _sas_device *sas_device;
struct scsi_target *starget = NULL;
struct MPT2SAS_TARGET *sas_target_priv_data;
unsigned long flags;
u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
u16 volume_handle = 0;
u64 volume_wwid = 0;
mpt2sas_config_get_volume_handle(ioc, handle, &volume_handle);
if (volume_handle)
mpt2sas_config_get_volume_wwid(ioc, volume_handle,
&volume_wwid);
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
if (sas_device) {
set_bit(handle, ioc->pd_handles);
if (sas_device->starget && sas_device->starget->hostdata) {
starget = sas_device->starget;
sas_target_priv_data = starget->hostdata;
sas_target_priv_data->flags |=
MPT_TARGET_FLAGS_RAID_COMPONENT;
sas_device->volume_handle = volume_handle;
sas_device->volume_wwid = volume_wwid;
}
}
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (!sas_device)
return;
/* hiding raid component */
if (starget)
starget_for_each_device(starget, (void *)1, _scsih_reprobe_lun);
}
/**
* _scsih_sas_pd_delete - delete pd component
* @ioc: per adapter object
* @element: IR config element data
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_pd_delete(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventIrConfigElement_t *element)
{
u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
_scsih_device_remove_by_handle(ioc, handle);
}
/**
* _scsih_sas_pd_add - remove pd component
* @ioc: per adapter object
* @element: IR config element data
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_pd_add(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventIrConfigElement_t *element)
{
struct _sas_device *sas_device;
unsigned long flags;
u16 handle = le16_to_cpu(element->PhysDiskDevHandle);
Mpi2ConfigReply_t mpi_reply;
Mpi2SasDevicePage0_t sas_device_pg0;
u32 ioc_status;
u64 sas_address;
u16 parent_handle;
set_bit(handle, ioc->pd_handles);
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (sas_device)
return;
if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
mpt2sas_transport_update_links(ioc, sas_address, handle,
sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
_scsih_add_device(ioc, handle, 0, 1);
}
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
/**
* _scsih_sas_ir_config_change_event_debug - debug for IR Config Change events
* @ioc: per adapter object
* @event_data: event data payload
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_ir_config_change_event_debug(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataIrConfigChangeList_t *event_data)
{
Mpi2EventIrConfigElement_t *element;
u8 element_type;
int i;
char *reason_str = NULL, *element_str = NULL;
element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
printk(MPT2SAS_INFO_FMT "raid config change: (%s), elements(%d)\n",
ioc->name, (le32_to_cpu(event_data->Flags) &
MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ?
"foreign" : "native", event_data->NumElements);
for (i = 0; i < event_data->NumElements; i++, element++) {
switch (element->ReasonCode) {
case MPI2_EVENT_IR_CHANGE_RC_ADDED:
reason_str = "add";
break;
case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
reason_str = "remove";
break;
case MPI2_EVENT_IR_CHANGE_RC_NO_CHANGE:
reason_str = "no change";
break;
case MPI2_EVENT_IR_CHANGE_RC_HIDE:
reason_str = "hide";
break;
case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
reason_str = "unhide";
break;
case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
reason_str = "volume_created";
break;
case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
reason_str = "volume_deleted";
break;
case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
reason_str = "pd_created";
break;
case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
reason_str = "pd_deleted";
break;
default:
reason_str = "unknown reason";
break;
}
element_type = le16_to_cpu(element->ElementFlags) &
MPI2_EVENT_IR_CHANGE_EFLAGS_ELEMENT_TYPE_MASK;
switch (element_type) {
case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLUME_ELEMENT:
element_str = "volume";
break;
case MPI2_EVENT_IR_CHANGE_EFLAGS_VOLPHYSDISK_ELEMENT:
element_str = "phys disk";
break;
case MPI2_EVENT_IR_CHANGE_EFLAGS_HOTSPARE_ELEMENT:
element_str = "hot spare";
break;
default:
element_str = "unknown element";
break;
}
printk(KERN_INFO "\t(%s:%s), vol handle(0x%04x), "
"pd handle(0x%04x), pd num(0x%02x)\n", element_str,
reason_str, le16_to_cpu(element->VolDevHandle),
le16_to_cpu(element->PhysDiskDevHandle),
element->PhysDiskNum);
}
}
#endif
/**
* _scsih_sas_ir_config_change_event - handle ir configuration change events
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_ir_config_change_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
Mpi2EventIrConfigElement_t *element;
int i;
u8 foreign_config;
Mpi2EventDataIrConfigChangeList_t *event_data = fw_event->event_data;
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
&& !ioc->hide_ir_msg)
_scsih_sas_ir_config_change_event_debug(ioc, event_data);
#endif
if (ioc->shost_recovery)
return;
foreign_config = (le32_to_cpu(event_data->Flags) &
MPI2_EVENT_IR_CHANGE_FLAGS_FOREIGN_CONFIG) ? 1 : 0;
element = (Mpi2EventIrConfigElement_t *)&event_data->ConfigElement[0];
for (i = 0; i < event_data->NumElements; i++, element++) {
switch (element->ReasonCode) {
case MPI2_EVENT_IR_CHANGE_RC_VOLUME_CREATED:
case MPI2_EVENT_IR_CHANGE_RC_ADDED:
if (!foreign_config)
_scsih_sas_volume_add(ioc, element);
break;
case MPI2_EVENT_IR_CHANGE_RC_VOLUME_DELETED:
case MPI2_EVENT_IR_CHANGE_RC_REMOVED:
if (!foreign_config)
_scsih_sas_volume_delete(ioc,
le16_to_cpu(element->VolDevHandle));
break;
case MPI2_EVENT_IR_CHANGE_RC_PD_CREATED:
if (!ioc->is_warpdrive)
_scsih_sas_pd_hide(ioc, element);
break;
case MPI2_EVENT_IR_CHANGE_RC_PD_DELETED:
if (!ioc->is_warpdrive)
_scsih_sas_pd_expose(ioc, element);
break;
case MPI2_EVENT_IR_CHANGE_RC_HIDE:
if (!ioc->is_warpdrive)
_scsih_sas_pd_add(ioc, element);
break;
case MPI2_EVENT_IR_CHANGE_RC_UNHIDE:
if (!ioc->is_warpdrive)
_scsih_sas_pd_delete(ioc, element);
break;
}
}
}
/**
* _scsih_sas_ir_volume_event - IR volume event
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_ir_volume_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
u64 wwid;
unsigned long flags;
struct _raid_device *raid_device;
u16 handle;
u32 state;
int rc;
Mpi2EventDataIrVolume_t *event_data = fw_event->event_data;
if (ioc->shost_recovery)
return;
if (event_data->ReasonCode != MPI2_EVENT_IR_VOLUME_RC_STATE_CHANGED)
return;
handle = le16_to_cpu(event_data->VolDevHandle);
state = le32_to_cpu(event_data->NewValue);
if (!ioc->hide_ir_msg)
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: handle(0x%04x), "
"old(0x%08x), new(0x%08x)\n", ioc->name, __func__, handle,
le32_to_cpu(event_data->PreviousValue), state));
switch (state) {
case MPI2_RAID_VOL_STATE_MISSING:
case MPI2_RAID_VOL_STATE_FAILED:
_scsih_sas_volume_delete(ioc, handle);
break;
case MPI2_RAID_VOL_STATE_ONLINE:
case MPI2_RAID_VOL_STATE_DEGRADED:
case MPI2_RAID_VOL_STATE_OPTIMAL:
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_handle(ioc, handle);
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
if (raid_device)
break;
mpt2sas_config_get_volume_wwid(ioc, handle, &wwid);
if (!wwid) {
printk(MPT2SAS_ERR_FMT
"failure at %s:%d/%s()!\n", ioc->name,
__FILE__, __LINE__, __func__);
break;
}
raid_device = kzalloc(sizeof(struct _raid_device), GFP_KERNEL);
if (!raid_device) {
printk(MPT2SAS_ERR_FMT
"failure at %s:%d/%s()!\n", ioc->name,
__FILE__, __LINE__, __func__);
break;
}
raid_device->id = ioc->sas_id++;
raid_device->channel = RAID_CHANNEL;
raid_device->handle = handle;
raid_device->wwid = wwid;
_scsih_raid_device_add(ioc, raid_device);
rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
raid_device->id, 0);
if (rc)
_scsih_raid_device_remove(ioc, raid_device);
break;
case MPI2_RAID_VOL_STATE_INITIALIZING:
default:
break;
}
}
/**
* _scsih_sas_ir_physical_disk_event - PD event
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_ir_physical_disk_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
u16 handle, parent_handle;
u32 state;
struct _sas_device *sas_device;
unsigned long flags;
Mpi2ConfigReply_t mpi_reply;
Mpi2SasDevicePage0_t sas_device_pg0;
u32 ioc_status;
Mpi2EventDataIrPhysicalDisk_t *event_data = fw_event->event_data;
u64 sas_address;
if (ioc->shost_recovery)
return;
if (event_data->ReasonCode != MPI2_EVENT_IR_PHYSDISK_RC_STATE_CHANGED)
return;
handle = le16_to_cpu(event_data->PhysDiskDevHandle);
state = le32_to_cpu(event_data->NewValue);
if (!ioc->hide_ir_msg)
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: handle(0x%04x), "
"old(0x%08x), new(0x%08x)\n", ioc->name, __func__, handle,
le32_to_cpu(event_data->PreviousValue), state));
switch (state) {
case MPI2_RAID_PD_STATE_ONLINE:
case MPI2_RAID_PD_STATE_DEGRADED:
case MPI2_RAID_PD_STATE_REBUILDING:
case MPI2_RAID_PD_STATE_OPTIMAL:
case MPI2_RAID_PD_STATE_HOT_SPARE:
if (!ioc->is_warpdrive)
set_bit(handle, ioc->pd_handles);
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (sas_device)
return;
if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply,
&sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address))
mpt2sas_transport_update_links(ioc, sas_address, handle,
sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
_scsih_add_device(ioc, handle, 0, 1);
break;
case MPI2_RAID_PD_STATE_OFFLINE:
case MPI2_RAID_PD_STATE_NOT_CONFIGURED:
case MPI2_RAID_PD_STATE_NOT_COMPATIBLE:
default:
break;
}
}
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
/**
* _scsih_sas_ir_operation_status_event_debug - debug for IR op event
* @ioc: per adapter object
* @event_data: event data payload
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_ir_operation_status_event_debug(struct MPT2SAS_ADAPTER *ioc,
Mpi2EventDataIrOperationStatus_t *event_data)
{
char *reason_str = NULL;
switch (event_data->RAIDOperation) {
case MPI2_EVENT_IR_RAIDOP_RESYNC:
reason_str = "resync";
break;
case MPI2_EVENT_IR_RAIDOP_ONLINE_CAP_EXPANSION:
reason_str = "online capacity expansion";
break;
case MPI2_EVENT_IR_RAIDOP_CONSISTENCY_CHECK:
reason_str = "consistency check";
break;
case MPI2_EVENT_IR_RAIDOP_BACKGROUND_INIT:
reason_str = "background init";
break;
case MPI2_EVENT_IR_RAIDOP_MAKE_DATA_CONSISTENT:
reason_str = "make data consistent";
break;
}
if (!reason_str)
return;
printk(MPT2SAS_INFO_FMT "raid operational status: (%s)"
"\thandle(0x%04x), percent complete(%d)\n",
ioc->name, reason_str,
le16_to_cpu(event_data->VolDevHandle),
event_data->PercentComplete);
}
#endif
/**
* _scsih_sas_ir_operation_status_event - handle RAID operation events
* @ioc: per adapter object
* @fw_event: The fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_scsih_sas_ir_operation_status_event(struct MPT2SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
Mpi2EventDataIrOperationStatus_t *event_data = fw_event->event_data;
static struct _raid_device *raid_device;
unsigned long flags;
u16 handle;
#ifdef CONFIG_SCSI_MPT2SAS_LOGGING
if ((ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
&& !ioc->hide_ir_msg)
_scsih_sas_ir_operation_status_event_debug(ioc,
event_data);
#endif
/* code added for raid transport support */
if (event_data->RAIDOperation == MPI2_EVENT_IR_RAIDOP_RESYNC) {
spin_lock_irqsave(&ioc->raid_device_lock, flags);
handle = le16_to_cpu(event_data->VolDevHandle);
raid_device = _scsih_raid_device_find_by_handle(ioc, handle);
if (raid_device)
raid_device->percent_complete =
event_data->PercentComplete;
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
}
}
/**
* _scsih_prep_device_scan - initialize parameters prior to device scan
* @ioc: per adapter object
*
* Set the deleted flag prior to device scan. If the device is found during
* the scan, then we clear the deleted flag.
*/
static void
_scsih_prep_device_scan(struct MPT2SAS_ADAPTER *ioc)
{
struct MPT2SAS_DEVICE *sas_device_priv_data;
struct scsi_device *sdev;
shost_for_each_device(sdev, ioc->shost) {
sas_device_priv_data = sdev->hostdata;
if (sas_device_priv_data && sas_device_priv_data->sas_target)
sas_device_priv_data->sas_target->deleted = 1;
}
}
/**
* _scsih_mark_responding_sas_device - mark a sas_devices as responding
* @ioc: per adapter object
* @sas_address: sas address
* @slot: enclosure slot id
* @handle: device handle
*
* After host reset, find out whether devices are still responding.
* Used in _scsi_remove_unresponsive_sas_devices.
*
* Return nothing.
*/
static void
_scsih_mark_responding_sas_device(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
u16 slot, u16 handle)
{
struct MPT2SAS_TARGET *sas_target_priv_data = NULL;
struct scsi_target *starget;
struct _sas_device *sas_device;
unsigned long flags;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
list_for_each_entry(sas_device, &ioc->sas_device_list, list) {
if (sas_device->sas_address == sas_address &&
sas_device->slot == slot) {
sas_device->responding = 1;
starget = sas_device->starget;
if (starget && starget->hostdata) {
sas_target_priv_data = starget->hostdata;
sas_target_priv_data->tm_busy = 0;
sas_target_priv_data->deleted = 0;
} else
sas_target_priv_data = NULL;
if (starget)
starget_printk(KERN_INFO, starget,
"handle(0x%04x), sas_addr(0x%016llx), "
"enclosure logical id(0x%016llx), "
"slot(%d)\n", handle,
(unsigned long long)sas_device->sas_address,
(unsigned long long)
sas_device->enclosure_logical_id,
sas_device->slot);
if (sas_device->handle == handle)
goto out;
printk(KERN_INFO "\thandle changed from(0x%04x)!!!\n",
sas_device->handle);
sas_device->handle = handle;
if (sas_target_priv_data)
sas_target_priv_data->handle = handle;
goto out;
}
}
out:
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
/**
* _scsih_search_responding_sas_devices -
* @ioc: per adapter object
*
* After host reset, find out whether devices are still responding.
* If not remove.
*
* Return nothing.
*/
static void
_scsih_search_responding_sas_devices(struct MPT2SAS_ADAPTER *ioc)
{
Mpi2SasDevicePage0_t sas_device_pg0;
Mpi2ConfigReply_t mpi_reply;
u16 ioc_status;
__le64 sas_address;
u16 handle;
u32 device_info;
u16 slot;
printk(MPT2SAS_INFO_FMT "search for end-devices: start\n", ioc->name);
if (list_empty(&ioc->sas_device_list))
goto out;
handle = 0xFFFF;
while (!(mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply,
&sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
handle = le16_to_cpu(sas_device_pg0.DevHandle);
device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
if (!(_scsih_is_end_device(device_info)))
continue;
sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
slot = le16_to_cpu(sas_device_pg0.Slot);
_scsih_mark_responding_sas_device(ioc, sas_address, slot,
handle);
}
out:
printk(MPT2SAS_INFO_FMT "search for end-devices: complete\n",
ioc->name);
}
/**
* _scsih_mark_responding_raid_device - mark a raid_device as responding
* @ioc: per adapter object
* @wwid: world wide identifier for raid volume
* @handle: device handle
*
* After host reset, find out whether devices are still responding.
* Used in _scsi_remove_unresponsive_raid_devices.
*
* Return nothing.
*/
static void
_scsih_mark_responding_raid_device(struct MPT2SAS_ADAPTER *ioc, u64 wwid,
u16 handle)
{
struct MPT2SAS_TARGET *sas_target_priv_data;
struct scsi_target *starget;
struct _raid_device *raid_device;
unsigned long flags;
spin_lock_irqsave(&ioc->raid_device_lock, flags);
list_for_each_entry(raid_device, &ioc->raid_device_list, list) {
if (raid_device->wwid == wwid && raid_device->starget) {
starget = raid_device->starget;
if (starget && starget->hostdata) {
sas_target_priv_data = starget->hostdata;
sas_target_priv_data->deleted = 0;
} else
sas_target_priv_data = NULL;
raid_device->responding = 1;
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
starget_printk(KERN_INFO, raid_device->starget,
"handle(0x%04x), wwid(0x%016llx)\n", handle,
(unsigned long long)raid_device->wwid);
/*
* WARPDRIVE: The handles of the PDs might have changed
* across the host reset so re-initialize the
* required data for Direct IO
*/
_scsih_init_warpdrive_properties(ioc, raid_device);
spin_lock_irqsave(&ioc->raid_device_lock, flags);
if (raid_device->handle == handle) {
spin_unlock_irqrestore(&ioc->raid_device_lock,
flags);
return;
}
printk(KERN_INFO "\thandle changed from(0x%04x)!!!\n",
raid_device->handle);
raid_device->handle = handle;
if (sas_target_priv_data)
sas_target_priv_data->handle = handle;
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
return;
}
}
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
}
/**
* _scsih_search_responding_raid_devices -
* @ioc: per adapter object
*
* After host reset, find out whether devices are still responding.
* If not remove.
*
* Return nothing.
*/
static void
_scsih_search_responding_raid_devices(struct MPT2SAS_ADAPTER *ioc)
{
Mpi2RaidVolPage1_t volume_pg1;
Mpi2RaidVolPage0_t volume_pg0;
Mpi2RaidPhysDiskPage0_t pd_pg0;
Mpi2ConfigReply_t mpi_reply;
u16 ioc_status;
u16 handle;
u8 phys_disk_num;
if (!ioc->ir_firmware)
return;
printk(MPT2SAS_INFO_FMT "search for raid volumes: start\n",
ioc->name);
if (list_empty(&ioc->raid_device_list))
goto out;
handle = 0xFFFF;
while (!(mpt2sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
&volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
handle = le16_to_cpu(volume_pg1.DevHandle);
if (mpt2sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
&volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
sizeof(Mpi2RaidVolPage0_t)))
continue;
if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED)
_scsih_mark_responding_raid_device(ioc,
le64_to_cpu(volume_pg1.WWID), handle);
}
/* refresh the pd_handles */
if (!ioc->is_warpdrive) {
phys_disk_num = 0xFF;
memset(ioc->pd_handles, 0, ioc->pd_handles_sz);
while (!(mpt2sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
&pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
phys_disk_num))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
phys_disk_num = pd_pg0.PhysDiskNum;
handle = le16_to_cpu(pd_pg0.DevHandle);
set_bit(handle, ioc->pd_handles);
}
}
out:
printk(MPT2SAS_INFO_FMT "search for responding raid volumes: "
"complete\n", ioc->name);
}
/**
* _scsih_mark_responding_expander - mark a expander as responding
* @ioc: per adapter object
* @sas_address: sas address
* @handle:
*
* After host reset, find out whether devices are still responding.
* Used in _scsi_remove_unresponsive_expanders.
*
* Return nothing.
*/
static void
_scsih_mark_responding_expander(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
u16 handle)
{
struct _sas_node *sas_expander;
unsigned long flags;
int i;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
list_for_each_entry(sas_expander, &ioc->sas_expander_list, list) {
if (sas_expander->sas_address != sas_address)
continue;
sas_expander->responding = 1;
if (sas_expander->handle == handle)
goto out;
printk(KERN_INFO "\texpander(0x%016llx): handle changed"
" from(0x%04x) to (0x%04x)!!!\n",
(unsigned long long)sas_expander->sas_address,
sas_expander->handle, handle);
sas_expander->handle = handle;
for (i = 0 ; i < sas_expander->num_phys ; i++)
sas_expander->phy[i].handle = handle;
goto out;
}
out:
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
}
/**
* _scsih_search_responding_expanders -
* @ioc: per adapter object
*
* After host reset, find out whether devices are still responding.
* If not remove.
*
* Return nothing.
*/
static void
_scsih_search_responding_expanders(struct MPT2SAS_ADAPTER *ioc)
{
Mpi2ExpanderPage0_t expander_pg0;
Mpi2ConfigReply_t mpi_reply;
u16 ioc_status;
u64 sas_address;
u16 handle;
printk(MPT2SAS_INFO_FMT "search for expanders: start\n", ioc->name);
if (list_empty(&ioc->sas_expander_list))
goto out;
handle = 0xFFFF;
while (!(mpt2sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
handle = le16_to_cpu(expander_pg0.DevHandle);
sas_address = le64_to_cpu(expander_pg0.SASAddress);
printk(KERN_INFO "\texpander present: handle(0x%04x), "
"sas_addr(0x%016llx)\n", handle,
(unsigned long long)sas_address);
_scsih_mark_responding_expander(ioc, sas_address, handle);
}
out:
printk(MPT2SAS_INFO_FMT "search for expanders: complete\n", ioc->name);
}
/**
* _scsih_remove_unresponding_sas_devices - removing unresponding devices
* @ioc: per adapter object
*
* Return nothing.
*/
static void
_scsih_remove_unresponding_sas_devices(struct MPT2SAS_ADAPTER *ioc)
{
struct _sas_device *sas_device, *sas_device_next;
struct _sas_node *sas_expander, *sas_expander_next;
struct _raid_device *raid_device, *raid_device_next;
struct list_head tmp_list;
unsigned long flags;
printk(MPT2SAS_INFO_FMT "removing unresponding devices: start\n",
ioc->name);
/* removing unresponding end devices */
printk(MPT2SAS_INFO_FMT "removing unresponding devices: end-devices\n",
ioc->name);
list_for_each_entry_safe(sas_device, sas_device_next,
&ioc->sas_device_list, list) {
if (!sas_device->responding)
_scsih_device_remove_by_handle(ioc,
sas_device->handle);
else
sas_device->responding = 0;
}
/* removing unresponding volumes */
if (ioc->ir_firmware) {
printk(MPT2SAS_INFO_FMT "removing unresponding devices: "
"volumes\n", ioc->name);
list_for_each_entry_safe(raid_device, raid_device_next,
&ioc->raid_device_list, list) {
if (!raid_device->responding)
_scsih_sas_volume_delete(ioc,
raid_device->handle);
else
raid_device->responding = 0;
}
}
/* removing unresponding expanders */
printk(MPT2SAS_INFO_FMT "removing unresponding devices: expanders\n",
ioc->name);
spin_lock_irqsave(&ioc->sas_node_lock, flags);
INIT_LIST_HEAD(&tmp_list);
list_for_each_entry_safe(sas_expander, sas_expander_next,
&ioc->sas_expander_list, list) {
if (!sas_expander->responding)
list_move_tail(&sas_expander->list, &tmp_list);
else
sas_expander->responding = 0;
}
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
list_for_each_entry_safe(sas_expander, sas_expander_next, &tmp_list,
list) {
list_del(&sas_expander->list);
_scsih_expander_node_remove(ioc, sas_expander);
}
printk(MPT2SAS_INFO_FMT "removing unresponding devices: complete\n",
ioc->name);
/* unblock devices */
_scsih_ublock_io_all_device(ioc);
}
static void
_scsih_refresh_expander_links(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_expander, u16 handle)
{
Mpi2ExpanderPage1_t expander_pg1;
Mpi2ConfigReply_t mpi_reply;
int i;
for (i = 0 ; i < sas_expander->num_phys ; i++) {
if ((mpt2sas_config_get_expander_pg1(ioc, &mpi_reply,
&expander_pg1, i, handle))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
mpt2sas_transport_update_links(ioc, sas_expander->sas_address,
le16_to_cpu(expander_pg1.AttachedDevHandle), i,
expander_pg1.NegotiatedLinkRate >> 4);
}
}
/**
* _scsih_scan_for_devices_after_reset - scan for devices after host reset
* @ioc: per adapter object
*
* Return nothing.
*/
static void
_scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc)
{
Mpi2ExpanderPage0_t expander_pg0;
Mpi2SasDevicePage0_t sas_device_pg0;
Mpi2RaidVolPage1_t volume_pg1;
Mpi2RaidVolPage0_t volume_pg0;
Mpi2RaidPhysDiskPage0_t pd_pg0;
Mpi2EventIrConfigElement_t element;
Mpi2ConfigReply_t mpi_reply;
u8 phys_disk_num;
u16 ioc_status;
u16 handle, parent_handle;
u64 sas_address;
struct _sas_device *sas_device;
struct _sas_node *expander_device;
static struct _raid_device *raid_device;
unsigned long flags;
printk(MPT2SAS_INFO_FMT "scan devices: start\n", ioc->name);
_scsih_sas_host_refresh(ioc);
/* expanders */
handle = 0xFFFF;
while (!(mpt2sas_config_get_expander_pg0(ioc, &mpi_reply, &expander_pg0,
MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
handle = le16_to_cpu(expander_pg0.DevHandle);
spin_lock_irqsave(&ioc->sas_node_lock, flags);
expander_device = mpt2sas_scsih_expander_find_by_sas_address(
ioc, le64_to_cpu(expander_pg0.SASAddress));
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (expander_device)
_scsih_refresh_expander_links(ioc, expander_device,
handle);
else
_scsih_expander_add(ioc, handle);
}
if (!ioc->ir_firmware)
goto skip_to_sas;
/* phys disk */
phys_disk_num = 0xFF;
while (!(mpt2sas_config_get_phys_disk_pg0(ioc, &mpi_reply,
&pd_pg0, MPI2_PHYSDISK_PGAD_FORM_GET_NEXT_PHYSDISKNUM,
phys_disk_num))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
phys_disk_num = pd_pg0.PhysDiskNum;
handle = le16_to_cpu(pd_pg0.DevHandle);
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (sas_device)
continue;
if (mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply,
&sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_HANDLE,
handle) != 0)
continue;
parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
if (!_scsih_get_sas_address(ioc, parent_handle,
&sas_address)) {
mpt2sas_transport_update_links(ioc, sas_address,
handle, sas_device_pg0.PhyNum,
MPI2_SAS_NEG_LINK_RATE_1_5);
set_bit(handle, ioc->pd_handles);
_scsih_add_device(ioc, handle, 0, 1);
}
}
/* volumes */
handle = 0xFFFF;
while (!(mpt2sas_config_get_raid_volume_pg1(ioc, &mpi_reply,
&volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
handle = le16_to_cpu(volume_pg1.DevHandle);
spin_lock_irqsave(&ioc->raid_device_lock, flags);
raid_device = _scsih_raid_device_find_by_wwid(ioc,
le64_to_cpu(volume_pg1.WWID));
spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
if (raid_device)
continue;
if (mpt2sas_config_get_raid_volume_pg0(ioc, &mpi_reply,
&volume_pg0, MPI2_RAID_VOLUME_PGAD_FORM_HANDLE, handle,
sizeof(Mpi2RaidVolPage0_t)))
continue;
if (volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_OPTIMAL ||
volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_ONLINE ||
volume_pg0.VolumeState == MPI2_RAID_VOL_STATE_DEGRADED) {
memset(&element, 0, sizeof(Mpi2EventIrConfigElement_t));
element.ReasonCode = MPI2_EVENT_IR_CHANGE_RC_ADDED;
element.VolDevHandle = volume_pg1.DevHandle;
_scsih_sas_volume_add(ioc, &element);
}
}
skip_to_sas:
/* sas devices */
handle = 0xFFFF;
while (!(mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply,
&sas_device_pg0, MPI2_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE,
handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
handle = le16_to_cpu(sas_device_pg0.DevHandle);
if (!(_scsih_is_end_device(
le32_to_cpu(sas_device_pg0.DeviceInfo))))
continue;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
le64_to_cpu(sas_device_pg0.SASAddress));
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (sas_device)
continue;
parent_handle = le16_to_cpu(sas_device_pg0.ParentDevHandle);
if (!_scsih_get_sas_address(ioc, parent_handle, &sas_address)) {
mpt2sas_transport_update_links(ioc, sas_address, handle,
sas_device_pg0.PhyNum, MPI2_SAS_NEG_LINK_RATE_1_5);
_scsih_add_device(ioc, handle, 0, 0);
}
}
printk(MPT2SAS_INFO_FMT "scan devices: complete\n", ioc->name);
}
/**
* mpt2sas_scsih_reset_handler - reset callback handler (for scsih)
* @ioc: per adapter object
* @reset_phase: phase
*
* The handler for doing any required cleanup or initialization.
*
* The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
* MPT2_IOC_DONE_RESET
*
* Return nothing.
*/
void
mpt2sas_scsih_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
{
switch (reset_phase) {
case MPT2_IOC_PRE_RESET:
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
"MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
break;
case MPT2_IOC_AFTER_RESET:
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
"MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
if (ioc->scsih_cmds.status & MPT2_CMD_PENDING) {
ioc->scsih_cmds.status |= MPT2_CMD_RESET;
mpt2sas_base_free_smid(ioc, ioc->scsih_cmds.smid);
complete(&ioc->scsih_cmds.done);
}
if (ioc->tm_cmds.status & MPT2_CMD_PENDING) {
ioc->tm_cmds.status |= MPT2_CMD_RESET;
mpt2sas_base_free_smid(ioc, ioc->tm_cmds.smid);
complete(&ioc->tm_cmds.done);
}
_scsih_fw_event_cleanup_queue(ioc);
_scsih_flush_running_cmds(ioc);
break;
case MPT2_IOC_DONE_RESET:
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
"MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
_scsih_sas_host_refresh(ioc);
_scsih_prep_device_scan(ioc);
_scsih_search_responding_sas_devices(ioc);
_scsih_search_responding_raid_devices(ioc);
_scsih_search_responding_expanders(ioc);
if (!ioc->is_driver_loading) {
_scsih_prep_device_scan(ioc);
_scsih_search_responding_sas_devices(ioc);
_scsih_search_responding_raid_devices(ioc);
_scsih_search_responding_expanders(ioc);
_scsih_error_recovery_delete_devices(ioc);
}
break;
}
}
/**
* _firmware_event_work - delayed task for processing firmware events
* @ioc: per adapter object
* @work: equal to the fw_event_work object
* Context: user.
*
* Return nothing.
*/
static void
_firmware_event_work(struct work_struct *work)
{
struct fw_event_work *fw_event = container_of(work,
struct fw_event_work, delayed_work.work);
struct MPT2SAS_ADAPTER *ioc = fw_event->ioc;
/* the queue is being flushed so ignore this event */
if (ioc->remove_host || fw_event->cancel_pending_work ||
ioc->pci_error_recovery) {
_scsih_fw_event_free(ioc, fw_event);
return;
}
switch (fw_event->event) {
case MPT2SAS_REMOVE_UNRESPONDING_DEVICES:
while (scsi_host_in_recovery(ioc->shost) || ioc->shost_recovery)
ssleep(1);
_scsih_remove_unresponding_sas_devices(ioc);
_scsih_scan_for_devices_after_reset(ioc);
break;
case MPT2SAS_PORT_ENABLE_COMPLETE:
ioc->start_scan = 0;
dewtprintk(ioc, printk(MPT2SAS_INFO_FMT "port enable: complete "
"from worker thread\n", ioc->name));
break;
case MPT2SAS_TURN_ON_FAULT_LED:
_scsih_turn_on_fault_led(ioc, fw_event->device_handle);
break;
case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
_scsih_sas_topology_change_event(ioc, fw_event);
break;
case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
_scsih_sas_device_status_change_event(ioc,
fw_event);
break;
case MPI2_EVENT_SAS_DISCOVERY:
_scsih_sas_discovery_event(ioc,
fw_event);
break;
case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
_scsih_sas_broadcast_primitive_event(ioc,
fw_event);
break;
case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
_scsih_sas_enclosure_dev_status_change_event(ioc,
fw_event);
break;
case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
_scsih_sas_ir_config_change_event(ioc, fw_event);
break;
case MPI2_EVENT_IR_VOLUME:
_scsih_sas_ir_volume_event(ioc, fw_event);
break;
case MPI2_EVENT_IR_PHYSICAL_DISK:
_scsih_sas_ir_physical_disk_event(ioc, fw_event);
break;
case MPI2_EVENT_IR_OPERATION_STATUS:
_scsih_sas_ir_operation_status_event(ioc, fw_event);
break;
}
_scsih_fw_event_free(ioc, fw_event);
}
/**
* mpt2sas_scsih_event_callback - firmware event handler (called at ISR time)
* @ioc: per adapter object
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
* Context: interrupt.
*
* This function merely adds a new work task into ioc->firmware_event_thread.
* The tasks are worked from _firmware_event_work in user context.
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
u8
mpt2sas_scsih_event_callback(struct MPT2SAS_ADAPTER *ioc, u8 msix_index,
u32 reply)
{
struct fw_event_work *fw_event;
Mpi2EventNotificationReply_t *mpi_reply;
u16 event;
u16 sz;
/* events turned off due to host reset or driver unloading */
if (ioc->remove_host || ioc->pci_error_recovery)
return 1;
mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
event = le16_to_cpu(mpi_reply->Event);
switch (event) {
/* handle these */
case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
{
Mpi2EventDataSasBroadcastPrimitive_t *baen_data =
(Mpi2EventDataSasBroadcastPrimitive_t *)
mpi_reply->EventData;
if (baen_data->Primitive !=
MPI2_EVENT_PRIMITIVE_ASYNCHRONOUS_EVENT)
return 1;
if (ioc->broadcast_aen_busy) {
ioc->broadcast_aen_pending++;
return 1;
} else
ioc->broadcast_aen_busy = 1;
break;
}
case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
_scsih_check_topo_delete_events(ioc,
(Mpi2EventDataSasTopologyChangeList_t *)
mpi_reply->EventData);
break;
case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
_scsih_check_ir_config_unhide_events(ioc,
(Mpi2EventDataIrConfigChangeList_t *)
mpi_reply->EventData);
break;
case MPI2_EVENT_IR_VOLUME:
_scsih_check_volume_delete_events(ioc,
(Mpi2EventDataIrVolume_t *)
mpi_reply->EventData);
break;
case MPI2_EVENT_LOG_ENTRY_ADDED:
{
Mpi2EventDataLogEntryAdded_t *log_entry;
u32 *log_code;
if (!ioc->is_warpdrive)
break;
log_entry = (Mpi2EventDataLogEntryAdded_t *)
mpi_reply->EventData;
log_code = (u32 *)log_entry->LogData;
if (le16_to_cpu(log_entry->LogEntryQualifier)
!= MPT2_WARPDRIVE_LOGENTRY)
break;
switch (le32_to_cpu(*log_code)) {
case MPT2_WARPDRIVE_LC_SSDT:
printk(MPT2SAS_WARN_FMT "WarpDrive Warning: "
"IO Throttling has occurred in the WarpDrive "
"subsystem. Check WarpDrive documentation for "
"additional details.\n", ioc->name);
break;
case MPT2_WARPDRIVE_LC_SSDLW:
printk(MPT2SAS_WARN_FMT "WarpDrive Warning: "
"Program/Erase Cycles for the WarpDrive subsystem "
"in degraded range. Check WarpDrive documentation "
"for additional details.\n", ioc->name);
break;
case MPT2_WARPDRIVE_LC_SSDLF:
printk(MPT2SAS_ERR_FMT "WarpDrive Fatal Error: "
"There are no Program/Erase Cycles for the "
"WarpDrive subsystem. The storage device will be "
"in read-only mode. Check WarpDrive documentation "
"for additional details.\n", ioc->name);
break;
case MPT2_WARPDRIVE_LC_BRMF:
printk(MPT2SAS_ERR_FMT "WarpDrive Fatal Error: "
"The Backup Rail Monitor has failed on the "
"WarpDrive subsystem. Check WarpDrive "
"documentation for additional details.\n",
ioc->name);
break;
}
break;
}
case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
case MPI2_EVENT_IR_OPERATION_STATUS:
case MPI2_EVENT_SAS_DISCOVERY:
case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
case MPI2_EVENT_IR_PHYSICAL_DISK:
break;
default: /* ignore the rest */
return 1;
}
fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC);
if (!fw_event) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return 1;
}
sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
fw_event->event_data = kzalloc(sz, GFP_ATOMIC);
if (!fw_event->event_data) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
kfree(fw_event);
return 1;
}
memcpy(fw_event->event_data, mpi_reply->EventData,
sz);
fw_event->ioc = ioc;
fw_event->VF_ID = mpi_reply->VF_ID;
fw_event->VP_ID = mpi_reply->VP_ID;
fw_event->event = event;
_scsih_fw_event_add(ioc, fw_event);
return 1;
}
/* shost template */
static struct scsi_host_template scsih_driver_template = {
.module = THIS_MODULE,
.name = "Fusion MPT SAS Host",
.proc_name = MPT2SAS_DRIVER_NAME,
.queuecommand = _scsih_qcmd,
.target_alloc = _scsih_target_alloc,
.slave_alloc = _scsih_slave_alloc,
.slave_configure = _scsih_slave_configure,
.target_destroy = _scsih_target_destroy,
.slave_destroy = _scsih_slave_destroy,
.scan_finished = _scsih_scan_finished,
.scan_start = _scsih_scan_start,
.change_queue_depth = _scsih_change_queue_depth,
.change_queue_type = _scsih_change_queue_type,
.eh_abort_handler = _scsih_abort,
.eh_device_reset_handler = _scsih_dev_reset,
.eh_target_reset_handler = _scsih_target_reset,
.eh_host_reset_handler = _scsih_host_reset,
.bios_param = _scsih_bios_param,
.can_queue = 1,
.this_id = -1,
.sg_tablesize = MPT2SAS_SG_DEPTH,
.max_sectors = 32767,
.cmd_per_lun = 7,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = mpt2sas_host_attrs,
.sdev_attrs = mpt2sas_dev_attrs,
};
/**
* _scsih_expander_node_remove - removing expander device from list.
* @ioc: per adapter object
* @sas_expander: the sas_device object
* Context: Calling function should acquire ioc->sas_node_lock.
*
* Removing object and freeing associated memory from the
* ioc->sas_expander_list.
*
* Return nothing.
*/
static void
_scsih_expander_node_remove(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_expander)
{
struct _sas_port *mpt2sas_port, *next;
/* remove sibling ports attached to this expander */
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 ==
SAS_END_DEVICE)
mpt2sas_device_remove_by_sas_address(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);
}
mpt2sas_transport_port_remove(ioc, sas_expander->sas_address,
sas_expander->sas_address_parent);
printk(MPT2SAS_INFO_FMT "expander_remove: handle"
"(0x%04x), sas_addr(0x%016llx)\n", ioc->name,
sas_expander->handle, (unsigned long long)
sas_expander->sas_address);
kfree(sas_expander->phy);
kfree(sas_expander);
}
/**
* _scsih_ir_shutdown - IR shutdown notification
* @ioc: per adapter object
*
* Sending RAID Action to alert the Integrated RAID subsystem of the IOC that
* the host system is shutting down.
*
* Return nothing.
*/
static void
_scsih_ir_shutdown(struct MPT2SAS_ADAPTER *ioc)
{
Mpi2RaidActionRequest_t *mpi_request;
Mpi2RaidActionReply_t *mpi_reply;
u16 smid;
/* is IR firmware build loaded ? */
if (!ioc->ir_firmware)
return;
/* are there any volumes ? */
if (list_empty(&ioc->raid_device_list))
return;
mutex_lock(&ioc->scsih_cmds.mutex);
if (ioc->scsih_cmds.status != MPT2_CMD_NOT_USED) {
printk(MPT2SAS_ERR_FMT "%s: scsih_cmd in use\n",
ioc->name, __func__);
goto out;
}
ioc->scsih_cmds.status = MPT2_CMD_PENDING;
smid = mpt2sas_base_get_smid(ioc, ioc->scsih_cb_idx);
if (!smid) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
goto out;
}
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
ioc->scsih_cmds.smid = smid;
memset(mpi_request, 0, sizeof(Mpi2RaidActionRequest_t));
mpi_request->Function = MPI2_FUNCTION_RAID_ACTION;
mpi_request->Action = MPI2_RAID_ACTION_SYSTEM_SHUTDOWN_INITIATED;
if (!ioc->hide_ir_msg)
printk(MPT2SAS_INFO_FMT "IR shutdown (sending)\n", ioc->name);
init_completion(&ioc->scsih_cmds.done);
mpt2sas_base_put_smid_default(ioc, smid);
wait_for_completion_timeout(&ioc->scsih_cmds.done, 10*HZ);
if (!(ioc->scsih_cmds.status & MPT2_CMD_COMPLETE)) {
printk(MPT2SAS_ERR_FMT "%s: timeout\n",
ioc->name, __func__);
goto out;
}
if (ioc->scsih_cmds.status & MPT2_CMD_REPLY_VALID) {
mpi_reply = ioc->scsih_cmds.reply;
if (!ioc->hide_ir_msg)
printk(MPT2SAS_INFO_FMT "IR shutdown (complete): "
"ioc_status(0x%04x), loginfo(0x%08x)\n",
ioc->name, le16_to_cpu(mpi_reply->IOCStatus),
le32_to_cpu(mpi_reply->IOCLogInfo));
}
out:
ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
mutex_unlock(&ioc->scsih_cmds.mutex);
}
/**
* _scsih_shutdown - routine call during system shutdown
* @pdev: PCI device struct
*
* Return nothing.
*/
static void
_scsih_shutdown(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
struct workqueue_struct *wq;
unsigned long flags;
ioc->remove_host = 1;
_scsih_fw_event_cleanup_queue(ioc);
spin_lock_irqsave(&ioc->fw_event_lock, flags);
wq = ioc->firmware_event_thread;
ioc->firmware_event_thread = NULL;
spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
if (wq)
destroy_workqueue(wq);
_scsih_ir_shutdown(ioc);
mpt2sas_base_detach(ioc);
}
/**
* _scsih_remove - detach and remove add host
* @pdev: PCI device struct
*
* Routine called when unloading the driver.
* Return nothing.
*/
static void __devexit
_scsih_remove(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
struct _sas_port *mpt2sas_port, *next_port;
struct _raid_device *raid_device, *next;
struct MPT2SAS_TARGET *sas_target_priv_data;
struct workqueue_struct *wq;
unsigned long flags;
ioc->remove_host = 1;
_scsih_fw_event_cleanup_queue(ioc);
spin_lock_irqsave(&ioc->fw_event_lock, flags);
wq = ioc->firmware_event_thread;
ioc->firmware_event_thread = NULL;
spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
if (wq)
destroy_workqueue(wq);
/* release all the volumes */
_scsih_ir_shutdown(ioc);
list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list,
list) {
if (raid_device->starget) {
sas_target_priv_data =
raid_device->starget->hostdata;
sas_target_priv_data->deleted = 1;
scsi_remove_target(&raid_device->starget->dev);
}
printk(MPT2SAS_INFO_FMT "removing handle(0x%04x), wwid"
"(0x%016llx)\n", ioc->name, raid_device->handle,
(unsigned long long) raid_device->wwid);
_scsih_raid_device_remove(ioc, raid_device);
}
/* free ports attached to the sas_host */
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)
mpt2sas_device_remove_by_sas_address(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);
}
/* free phys attached to the sas_host */
if (ioc->sas_hba.num_phys) {
kfree(ioc->sas_hba.phy);
ioc->sas_hba.phy = NULL;
ioc->sas_hba.num_phys = 0;
}
sas_remove_host(shost);
mpt2sas_base_detach(ioc);
list_del(&ioc->list);
scsi_remove_host(shost);
scsi_host_put(shost);
}
/**
* _scsih_probe_boot_devices - reports 1st device
* @ioc: per adapter object
*
* If specified in bios page 2, this routine reports the 1st
* device scsi-ml or sas transport for persistent boot device
* purposes. Please refer to function _scsih_determine_boot_device()
*/
static void
_scsih_probe_boot_devices(struct MPT2SAS_ADAPTER *ioc)
{
u8 is_raid;
void *device;
struct _sas_device *sas_device;
struct _raid_device *raid_device;
u16 handle;
u64 sas_address_parent;
u64 sas_address;
unsigned long flags;
int rc;
/* no Bios, return immediately */
if (!ioc->bios_pg3.BiosVersion)
return;
device = NULL;
is_raid = 0;
if (ioc->req_boot_device.device) {
device = ioc->req_boot_device.device;
is_raid = ioc->req_boot_device.is_raid;
} else if (ioc->req_alt_boot_device.device) {
device = ioc->req_alt_boot_device.device;
is_raid = ioc->req_alt_boot_device.is_raid;
} else if (ioc->current_boot_device.device) {
device = ioc->current_boot_device.device;
is_raid = ioc->current_boot_device.is_raid;
}
if (!device)
return;
if (is_raid) {
raid_device = device;
rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
raid_device->id, 0);
if (rc)
_scsih_raid_device_remove(ioc, raid_device);
} else {
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = device;
handle = sas_device->handle;
sas_address_parent = sas_device->sas_address_parent;
sas_address = sas_device->sas_address;
list_move_tail(&sas_device->list, &ioc->sas_device_list);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
if (ioc->hide_drives)
return;
if (!mpt2sas_transport_port_add(ioc, sas_device->handle,
sas_device->sas_address_parent)) {
_scsih_sas_device_remove(ioc, sas_device);
} else if (!sas_device->starget) {
if (!ioc->is_driver_loading)
mpt2sas_transport_port_remove(ioc, sas_address,
sas_address_parent);
_scsih_sas_device_remove(ioc, sas_device);
}
}
}
/**
* _scsih_probe_raid - reporting raid volumes to scsi-ml
* @ioc: per adapter object
*
* Called during initial loading of the driver.
*/
static void
_scsih_probe_raid(struct MPT2SAS_ADAPTER *ioc)
{
struct _raid_device *raid_device, *raid_next;
int rc;
list_for_each_entry_safe(raid_device, raid_next,
&ioc->raid_device_list, list) {
if (raid_device->starget)
continue;
rc = scsi_add_device(ioc->shost, RAID_CHANNEL,
raid_device->id, 0);
if (rc)
_scsih_raid_device_remove(ioc, raid_device);
}
}
/**
* _scsih_probe_sas - reporting sas devices to sas transport
* @ioc: per adapter object
*
* Called during initial loading of the driver.
*/
static void
_scsih_probe_sas(struct MPT2SAS_ADAPTER *ioc)
{
struct _sas_device *sas_device, *next;
unsigned long flags;
/* SAS Device List */
list_for_each_entry_safe(sas_device, next, &ioc->sas_device_init_list,
list) {
if (ioc->hide_drives)
continue;
if (!mpt2sas_transport_port_add(ioc, sas_device->handle,
sas_device->sas_address_parent)) {
list_del(&sas_device->list);
kfree(sas_device);
continue;
} else if (!sas_device->starget) {
if (!ioc->is_driver_loading)
mpt2sas_transport_port_remove(ioc,
sas_device->sas_address,
sas_device->sas_address_parent);
list_del(&sas_device->list);
kfree(sas_device);
continue;
}
spin_lock_irqsave(&ioc->sas_device_lock, flags);
list_move_tail(&sas_device->list, &ioc->sas_device_list);
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
}
}
/**
* _scsih_probe_devices - probing for devices
* @ioc: per adapter object
*
* Called during initial loading of the driver.
*/
static void
_scsih_probe_devices(struct MPT2SAS_ADAPTER *ioc)
{
u16 volume_mapping_flags;
if (!(ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR))
return; /* return when IOC doesn't support initiator mode */
_scsih_probe_boot_devices(ioc);
if (ioc->ir_firmware) {
volume_mapping_flags =
le16_to_cpu(ioc->ioc_pg8.IRVolumeMappingFlags) &
MPI2_IOCPAGE8_IRFLAGS_MASK_VOLUME_MAPPING_MODE;
if (volume_mapping_flags ==
MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING) {
_scsih_probe_raid(ioc);
_scsih_probe_sas(ioc);
} else {
_scsih_probe_sas(ioc);
_scsih_probe_raid(ioc);
}
} else
_scsih_probe_sas(ioc);
}
/**
* _scsih_scan_start - scsi lld callback for .scan_start
* @shost: SCSI host pointer
*
* The shost has the ability to discover targets on its own instead
* of scanning the entire bus. In our implemention, we will kick off
* firmware discovery.
*/
static void
_scsih_scan_start(struct Scsi_Host *shost)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
int rc;
if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
mpt2sas_enable_diag_buffer(ioc, diag_buffer_enable);
ioc->start_scan = 1;
rc = mpt2sas_port_enable(ioc);
if (rc != 0)
printk(MPT2SAS_INFO_FMT "port enable: FAILED\n", ioc->name);
}
/**
* _scsih_scan_finished - scsi lld callback for .scan_finished
* @shost: SCSI host pointer
* @time: elapsed time of the scan in jiffies
*
* This function will be called periodically until it returns 1 with the
* scsi_host and the elapsed time of the scan in jiffies. In our implemention,
* we wait for firmware discovery to complete, then return 1.
*/
static int
_scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
if (time >= (300 * HZ)) {
ioc->base_cmds.status = MPT2_CMD_NOT_USED;
printk(MPT2SAS_INFO_FMT "port enable: FAILED with timeout "
"(timeout=300s)\n", ioc->name);
ioc->is_driver_loading = 0;
return 1;
}
if (ioc->start_scan)
return 0;
if (ioc->start_scan_failed) {
printk(MPT2SAS_INFO_FMT "port enable: FAILED with "
"(ioc_status=0x%08x)\n", ioc->name, ioc->start_scan_failed);
ioc->is_driver_loading = 0;
ioc->wait_for_discovery_to_complete = 0;
ioc->remove_host = 1;
return 1;
}
printk(MPT2SAS_INFO_FMT "port enable: SUCCESS\n", ioc->name);
ioc->base_cmds.status = MPT2_CMD_NOT_USED;
if (ioc->wait_for_discovery_to_complete) {
ioc->wait_for_discovery_to_complete = 0;
_scsih_probe_devices(ioc);
}
mpt2sas_base_start_watchdog(ioc);
ioc->is_driver_loading = 0;
return 1;
}
/**
* _scsih_probe - attach and add scsi host
* @pdev: PCI device struct
* @id: pci device id
*
* Returns 0 success, anything else error.
*/
static int
_scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct MPT2SAS_ADAPTER *ioc;
struct Scsi_Host *shost;
shost = scsi_host_alloc(&scsih_driver_template,
sizeof(struct MPT2SAS_ADAPTER));
if (!shost)
return -ENODEV;
/* init local params */
ioc = shost_priv(shost);
memset(ioc, 0, sizeof(struct MPT2SAS_ADAPTER));
INIT_LIST_HEAD(&ioc->list);
list_add_tail(&ioc->list, &mpt2sas_ioc_list);
ioc->shost = shost;
ioc->id = mpt_ids++;
sprintf(ioc->name, "%s%d", MPT2SAS_DRIVER_NAME, ioc->id);
ioc->pdev = pdev;
if (id->device == MPI2_MFGPAGE_DEVID_SSS6200) {
ioc->is_warpdrive = 1;
ioc->hide_ir_msg = 1;
} else
ioc->mfg_pg10_hide_flag = MFG_PAGE10_EXPOSE_ALL_DISKS;
ioc->scsi_io_cb_idx = scsi_io_cb_idx;
ioc->tm_cb_idx = tm_cb_idx;
ioc->ctl_cb_idx = ctl_cb_idx;
ioc->base_cb_idx = base_cb_idx;
ioc->port_enable_cb_idx = port_enable_cb_idx;
ioc->transport_cb_idx = transport_cb_idx;
ioc->scsih_cb_idx = scsih_cb_idx;
ioc->config_cb_idx = config_cb_idx;
ioc->tm_tr_cb_idx = tm_tr_cb_idx;
ioc->tm_tr_volume_cb_idx = tm_tr_volume_cb_idx;
ioc->tm_sas_control_cb_idx = tm_sas_control_cb_idx;
ioc->logging_level = logging_level;
ioc->schedule_dead_ioc_flush_running_cmds = &_scsih_flush_running_cmds;
/* misc semaphores and spin locks */
mutex_init(&ioc->reset_in_progress_mutex);
spin_lock_init(&ioc->ioc_reset_in_progress_lock);
spin_lock_init(&ioc->scsi_lookup_lock);
spin_lock_init(&ioc->sas_device_lock);
spin_lock_init(&ioc->sas_node_lock);
spin_lock_init(&ioc->fw_event_lock);
spin_lock_init(&ioc->raid_device_lock);
INIT_LIST_HEAD(&ioc->sas_device_list);
INIT_LIST_HEAD(&ioc->sas_device_init_list);
INIT_LIST_HEAD(&ioc->sas_expander_list);
INIT_LIST_HEAD(&ioc->fw_event_list);
INIT_LIST_HEAD(&ioc->raid_device_list);
INIT_LIST_HEAD(&ioc->sas_hba.sas_port_list);
INIT_LIST_HEAD(&ioc->delayed_tr_list);
INIT_LIST_HEAD(&ioc->delayed_tr_volume_list);
/* init shost parameters */
shost->max_cmd_len = 32;
shost->max_lun = max_lun;
shost->transportt = mpt2sas_transport_template;
shost->unique_id = ioc->id;
if (max_sectors != 0xFFFF) {
if (max_sectors < 64) {
shost->max_sectors = 64;
printk(MPT2SAS_WARN_FMT "Invalid value %d passed "
"for max_sectors, range is 64 to 8192. Assigning "
"value of 64.\n", ioc->name, max_sectors);
} else if (max_sectors > 32767) {
shost->max_sectors = 32767;
printk(MPT2SAS_WARN_FMT "Invalid value %d passed "
"for max_sectors, range is 64 to 8192. Assigning "
"default value of 32767.\n", ioc->name,
max_sectors);
} else {
shost->max_sectors = max_sectors & 0xFFFE;
printk(MPT2SAS_INFO_FMT "The max_sectors value is "
"set to %d\n", ioc->name, shost->max_sectors);
}
}
if ((scsi_add_host(shost, &pdev->dev))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
list_del(&ioc->list);
goto out_add_shost_fail;
}
scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION
| SHOST_DIF_TYPE2_PROTECTION | SHOST_DIF_TYPE3_PROTECTION);
scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
/* event thread */
snprintf(ioc->firmware_event_name, sizeof(ioc->firmware_event_name),
"fw_event%d", ioc->id);
ioc->firmware_event_thread = create_singlethread_workqueue(
ioc->firmware_event_name);
if (!ioc->firmware_event_thread) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out_thread_fail;
}
ioc->is_driver_loading = 1;
if ((mpt2sas_base_attach(ioc))) {
printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out_attach_fail;
}
if (ioc->is_warpdrive) {
if (ioc->mfg_pg10_hide_flag == MFG_PAGE10_EXPOSE_ALL_DISKS)
ioc->hide_drives = 0;
else if (ioc->mfg_pg10_hide_flag == MFG_PAGE10_HIDE_ALL_DISKS)
ioc->hide_drives = 1;
else {
if (_scsih_get_num_volumes(ioc))
ioc->hide_drives = 1;
else
ioc->hide_drives = 0;
}
} else
ioc->hide_drives = 0;
scsi_scan_host(shost);
return 0;
out_attach_fail:
destroy_workqueue(ioc->firmware_event_thread);
out_thread_fail:
list_del(&ioc->list);
scsi_remove_host(shost);
scsi_host_put(shost);
out_add_shost_fail:
return -ENODEV;
}
#ifdef CONFIG_PM
/**
* _scsih_suspend - power management suspend main entry point
* @pdev: PCI device struct
* @state: PM state change to (usually PCI_D3)
*
* Returns 0 success, anything else error.
*/
static int
_scsih_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
pci_power_t device_state;
mpt2sas_base_stop_watchdog(ioc);
scsi_block_requests(shost);
device_state = pci_choose_state(pdev, state);
printk(MPT2SAS_INFO_FMT "pdev=0x%p, slot=%s, entering "
"operating state [D%d]\n", ioc->name, pdev,
pci_name(pdev), device_state);
mpt2sas_base_free_resources(ioc);
pci_save_state(pdev);
pci_disable_device(pdev);
pci_set_power_state(pdev, device_state);
return 0;
}
/**
* _scsih_resume - power management resume main entry point
* @pdev: PCI device struct
*
* Returns 0 success, anything else error.
*/
static int
_scsih_resume(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
pci_power_t device_state = pdev->current_state;
int r;
printk(MPT2SAS_INFO_FMT "pdev=0x%p, slot=%s, previous "
"operating state [D%d]\n", ioc->name, pdev,
pci_name(pdev), device_state);
pci_set_power_state(pdev, PCI_D0);
pci_enable_wake(pdev, PCI_D0, 0);
pci_restore_state(pdev);
ioc->pdev = pdev;
r = mpt2sas_base_map_resources(ioc);
if (r)
return r;
mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP, SOFT_RESET);
scsi_unblock_requests(shost);
mpt2sas_base_start_watchdog(ioc);
return 0;
}
#endif /* CONFIG_PM */
/**
* _scsih_pci_error_detected - Called when a PCI error is detected.
* @pdev: PCI device struct
* @state: PCI channel state
*
* Description: Called when a PCI error is detected.
*
* Return value:
* PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
*/
static pci_ers_result_t
_scsih_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
printk(MPT2SAS_INFO_FMT "PCI error: detected callback, state(%d)!!\n",
ioc->name, state);
switch (state) {
case pci_channel_io_normal:
return PCI_ERS_RESULT_CAN_RECOVER;
case pci_channel_io_frozen:
/* Fatal error, prepare for slot reset */
ioc->pci_error_recovery = 1;
scsi_block_requests(ioc->shost);
mpt2sas_base_stop_watchdog(ioc);
mpt2sas_base_free_resources(ioc);
return PCI_ERS_RESULT_NEED_RESET;
case pci_channel_io_perm_failure:
/* Permanent error, prepare for device removal */
ioc->pci_error_recovery = 1;
mpt2sas_base_stop_watchdog(ioc);
_scsih_flush_running_cmds(ioc);
return PCI_ERS_RESULT_DISCONNECT;
}
return PCI_ERS_RESULT_NEED_RESET;
}
/**
* _scsih_pci_slot_reset - Called when PCI slot has been reset.
* @pdev: PCI device struct
*
* Description: This routine is called by the pci error recovery
* code after the PCI slot has been reset, just before we
* should resume normal operations.
*/
static pci_ers_result_t
_scsih_pci_slot_reset(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
int rc;
printk(MPT2SAS_INFO_FMT "PCI error: slot reset callback!!\n",
ioc->name);
ioc->pci_error_recovery = 0;
ioc->pdev = pdev;
pci_restore_state(pdev);
rc = mpt2sas_base_map_resources(ioc);
if (rc)
return PCI_ERS_RESULT_DISCONNECT;
rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
printk(MPT2SAS_WARN_FMT "hard reset: %s\n", ioc->name,
(rc == 0) ? "success" : "failed");
if (!rc)
return PCI_ERS_RESULT_RECOVERED;
else
return PCI_ERS_RESULT_DISCONNECT;
}
/**
* _scsih_pci_resume() - resume normal ops after PCI reset
* @pdev: pointer to PCI device
*
* Called when the error recovery driver tells us that its
* OK to resume normal operation. Use completion to allow
* halted scsi ops to resume.
*/
static void
_scsih_pci_resume(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
printk(MPT2SAS_INFO_FMT "PCI error: resume callback!!\n", ioc->name);
pci_cleanup_aer_uncorrect_error_status(pdev);
mpt2sas_base_start_watchdog(ioc);
scsi_unblock_requests(ioc->shost);
}
/**
* _scsih_pci_mmio_enabled - Enable MMIO and dump debug registers
* @pdev: pointer to PCI device
*/
static pci_ers_result_t
_scsih_pci_mmio_enabled(struct pci_dev *pdev)
{
struct Scsi_Host *shost = pci_get_drvdata(pdev);
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
printk(MPT2SAS_INFO_FMT "PCI error: mmio enabled callback!!\n",
ioc->name);
/* TODO - dump whatever for debugging purposes */
/* Request a slot reset. */
return PCI_ERS_RESULT_NEED_RESET;
}
static struct pci_error_handlers _scsih_err_handler = {
.error_detected = _scsih_pci_error_detected,
.mmio_enabled = _scsih_pci_mmio_enabled,
.slot_reset = _scsih_pci_slot_reset,
.resume = _scsih_pci_resume,
};
static struct pci_driver scsih_driver = {
.name = MPT2SAS_DRIVER_NAME,
.id_table = scsih_pci_table,
.probe = _scsih_probe,
.remove = __devexit_p(_scsih_remove),
.shutdown = _scsih_shutdown,
.err_handler = &_scsih_err_handler,
#ifdef CONFIG_PM
.suspend = _scsih_suspend,
.resume = _scsih_resume,
#endif
};
/* raid transport support */
static struct raid_function_template mpt2sas_raid_functions = {
.cookie = &scsih_driver_template,
.is_raid = _scsih_is_raid,
.get_resync = _scsih_get_resync,
.get_state = _scsih_get_state,
};
/**
* _scsih_init - main entry point for this driver.
*
* Returns 0 success, anything else error.
*/
static int __init
_scsih_init(void)
{
int error;
mpt_ids = 0;
printk(KERN_INFO "%s version %s loaded\n", MPT2SAS_DRIVER_NAME,
MPT2SAS_DRIVER_VERSION);
mpt2sas_transport_template =
sas_attach_transport(&mpt2sas_transport_functions);
if (!mpt2sas_transport_template)
return -ENODEV;
/* raid transport support */
mpt2sas_raid_template = raid_class_attach(&mpt2sas_raid_functions);
if (!mpt2sas_raid_template) {
sas_release_transport(mpt2sas_transport_template);
return -ENODEV;
}
mpt2sas_base_initialize_callback_handler();
/* queuecommand callback hander */
scsi_io_cb_idx = mpt2sas_base_register_callback_handler(_scsih_io_done);
/* task management callback handler */
tm_cb_idx = mpt2sas_base_register_callback_handler(_scsih_tm_done);
/* base internal commands callback handler */
base_cb_idx = mpt2sas_base_register_callback_handler(mpt2sas_base_done);
port_enable_cb_idx = mpt2sas_base_register_callback_handler(
mpt2sas_port_enable_done);
/* transport internal commands callback handler */
transport_cb_idx = mpt2sas_base_register_callback_handler(
mpt2sas_transport_done);
/* scsih internal commands callback handler */
scsih_cb_idx = mpt2sas_base_register_callback_handler(_scsih_done);
/* configuration page API internal commands callback handler */
config_cb_idx = mpt2sas_base_register_callback_handler(
mpt2sas_config_done);
/* ctl module callback handler */
ctl_cb_idx = mpt2sas_base_register_callback_handler(mpt2sas_ctl_done);
tm_tr_cb_idx = mpt2sas_base_register_callback_handler(
_scsih_tm_tr_complete);
tm_tr_volume_cb_idx = mpt2sas_base_register_callback_handler(
_scsih_tm_volume_tr_complete);
tm_sas_control_cb_idx = mpt2sas_base_register_callback_handler(
_scsih_sas_control_complete);
mpt2sas_ctl_init();
error = pci_register_driver(&scsih_driver);
if (error) {
/* raid transport support */
raid_class_release(mpt2sas_raid_template);
sas_release_transport(mpt2sas_transport_template);
}
return error;
}
/**
* _scsih_exit - exit point for this driver (when it is a module).
*
* Returns 0 success, anything else error.
*/
static void __exit
_scsih_exit(void)
{
printk(KERN_INFO "mpt2sas version %s unloading\n",
MPT2SAS_DRIVER_VERSION);
pci_unregister_driver(&scsih_driver);
mpt2sas_ctl_exit();
mpt2sas_base_release_callback_handler(scsi_io_cb_idx);
mpt2sas_base_release_callback_handler(tm_cb_idx);
mpt2sas_base_release_callback_handler(base_cb_idx);
mpt2sas_base_release_callback_handler(port_enable_cb_idx);
mpt2sas_base_release_callback_handler(transport_cb_idx);
mpt2sas_base_release_callback_handler(scsih_cb_idx);
mpt2sas_base_release_callback_handler(config_cb_idx);
mpt2sas_base_release_callback_handler(ctl_cb_idx);
mpt2sas_base_release_callback_handler(tm_tr_cb_idx);
mpt2sas_base_release_callback_handler(tm_tr_volume_cb_idx);
mpt2sas_base_release_callback_handler(tm_sas_control_cb_idx);
/* raid transport support */
raid_class_release(mpt2sas_raid_template);
sas_release_transport(mpt2sas_transport_template);
}
module_init(_scsih_init);
module_exit(_scsih_exit);
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