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nest-open-source / nest-learning-thermostat / 5.7 / linux-imx-ul / refs/heads/master / . / drivers / scsi / mpt2sas / mpt2sas_scsih.c
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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) 2007-2014 LSI Corporation
* Copyright (C) 20013-2014 Avago Technologies
* (mailto: MPT-FusionLinux.pdl@avagotech.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 <asm/unaligned.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");
static int missing_delay[2] = {-1, -1};
module_param_array(missing_delay, int, NULL, 0);
MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
/* 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)");
static int disable_discovery = -1;
module_param(disable_discovery, int, 0);
MODULE_PARM_DESC(disable_discovery, " disable discovery ");
/* permit overriding the host protection capabilities mask (EEDP/T10 PI) */
static int prot_mask = 0;
module_param(prot_mask, int, 0);
MODULE_PARM_DESC(prot_mask, " host protection capabilities mask, def=7 ");
/**
* 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_PFA_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;
char event_data[0] __aligned(4);
};
/* 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_change_queue_depth - setting device queue depth
* @sdev: scsi device struct
* @qdepth: requested queue depth
*
* Returns queue depth.
*/
static int
_scsih_change_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;
return scsi_change_queue_depth(sdev, qdepth);
}
/**
* _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(*sas_target_priv_data),
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;
struct _sas_device *sas_device;
unsigned long flags;
sas_device_priv_data = kzalloc(sizeof(*sas_device_priv_data),
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);
}
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_device->starget == NULL)) {
sdev_printk(KERN_INFO, sdev,
"%s : sas_device->starget set to starget @ %d\n",
__func__, __LINE__);
sas_device->starget = starget;
}
spin_unlock_irqrestore(&ioc->sas_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) ||
le16_to_cpu(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);
/* 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);
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
* @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,
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, 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, 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, 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);
if (ioc->is_driver_loading) {
printk(MPT2SAS_INFO_FMT "Blocking the host reset\n",
ioc->name);
r = FAILED;
goto out;
}
retval = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
r = (retval < 0) ? FAILED : SUCCESS;
out:
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);
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_sync(&fw_event->delayed_work)) {
_scsih_fw_event_free(ioc, fw_event);
continue;
}
}
}
/**
* _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, SDEV_RUNNING);
}
}
/**
* _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, u64 sas_address)
{
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->sas_address ==
sas_address) {
dewtprintk(ioc, sdev_printk(KERN_INFO, sdev,
MPT2SAS_INFO_FMT "SDEV_RUNNING: "
"sas address(0x%016llx)\n", ioc->name,
(unsigned long long)sas_address));
sas_device_priv_data->block = 0;
scsi_internal_device_unblock(sdev, SDEV_RUNNING);
}
}
}
/**
* _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, sas_address);
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)
{
Mpi2SasIoUnitControlReply_t *mpi_reply =
mpt2sas_base_get_reply_virt_addr(ioc, reply);
if (likely(mpi_reply)) {
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)));
} else {
printk(MPT2SAS_ERR_FMT "mpi_reply not valid at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
}
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,