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linux/drivers/scsi/mpt3sas/mpt3sas_base.c
Wei Yongjun 25ef16d071 [SCSI] mpt3sas: remove unused variables 
The variable 'chain_flags' and 'phy_number' are initialized but never used
otherwise, So remove those unused variables.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2013-01-29 14:15:35 +11:00

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/*
* This is the Fusion MPT base driver providing common API layer interface
* for access to MPT (Message Passing Technology) firmware.
*
* This code is based on drivers/scsi/mpt3sas/mpt3sas_base.c
* Copyright (C) 2012 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/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/time.h>
#include <linux/kthread.h>
#include <linux/aer.h>
#include "mpt3sas_base.h"
static MPT_CALLBACK mpt_callbacks[MPT_MAX_CALLBACKS];
#define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */
/* maximum controller queue depth */
#define MAX_HBA_QUEUE_DEPTH 30000
#define MAX_CHAIN_DEPTH 100000
static int max_queue_depth = -1;
module_param(max_queue_depth, int, 0);
MODULE_PARM_DESC(max_queue_depth, " max controller queue depth ");
static int max_sgl_entries = -1;
module_param(max_sgl_entries, int, 0);
MODULE_PARM_DESC(max_sgl_entries, " max sg entries ");
static int msix_disable = -1;
module_param(msix_disable, int, 0);
MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
static int mpt3sas_fwfault_debug;
MODULE_PARM_DESC(mpt3sas_fwfault_debug,
" enable detection of firmware fault and halt firmware - (default=0)");
/**
* _scsih_set_fwfault_debug - global setting of ioc->fwfault_debug.
*
*/
static int
_scsih_set_fwfault_debug(const char *val, struct kernel_param *kp)
{
int ret = param_set_int(val, kp);
struct MPT3SAS_ADAPTER *ioc;
if (ret)
return ret;
pr_info("setting fwfault_debug(%d)\n", mpt3sas_fwfault_debug);
list_for_each_entry(ioc, &mpt3sas_ioc_list, list)
ioc->fwfault_debug = mpt3sas_fwfault_debug;
return 0;
}
module_param_call(mpt3sas_fwfault_debug, _scsih_set_fwfault_debug,
param_get_int, &mpt3sas_fwfault_debug, 0644);
/**
* mpt3sas_remove_dead_ioc_func - kthread context to remove dead ioc
* @arg: input argument, used to derive ioc
*
* Return 0 if controller is removed from pci subsystem.
* Return -1 for other case.
*/
static int mpt3sas_remove_dead_ioc_func(void *arg)
{
struct MPT3SAS_ADAPTER *ioc = (struct MPT3SAS_ADAPTER *)arg;
struct pci_dev *pdev;
if ((ioc == NULL))
return -1;
pdev = ioc->pdev;
if ((pdev == NULL))
return -1;
pci_stop_and_remove_bus_device(pdev);
return 0;
}
/**
* _base_fault_reset_work - workq handling ioc fault conditions
* @work: input argument, used to derive ioc
* Context: sleep.
*
* Return nothing.
*/
static void
_base_fault_reset_work(struct work_struct *work)
{
struct MPT3SAS_ADAPTER *ioc =
container_of(work, struct MPT3SAS_ADAPTER, fault_reset_work.work);
unsigned long flags;
u32 doorbell;
int rc;
struct task_struct *p;
spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
if (ioc->shost_recovery)
goto rearm_timer;
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
doorbell = mpt3sas_base_get_iocstate(ioc, 0);
if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_MASK) {
pr_err(MPT3SAS_FMT "SAS host is non-operational !!!!\n",
ioc->name);
/*
* Call _scsih_flush_pending_cmds callback so that we flush all
* pending commands back to OS. This call is required to aovid
* deadlock at block layer. Dead IOC will fail to do diag reset,
* and this call is safe since dead ioc will never return any
* command back from HW.
*/
ioc->schedule_dead_ioc_flush_running_cmds(ioc);
/*
* Set remove_host flag early since kernel thread will
* take some time to execute.
*/
ioc->remove_host = 1;
/*Remove the Dead Host */
p = kthread_run(mpt3sas_remove_dead_ioc_func, ioc,
"mpt3sas_dead_ioc_%d", ioc->id);
if (IS_ERR(p))
pr_err(MPT3SAS_FMT
"%s: Running mpt3sas_dead_ioc thread failed !!!!\n",
ioc->name, __func__);
else
pr_err(MPT3SAS_FMT
"%s: Running mpt3sas_dead_ioc thread success !!!!\n",
ioc->name, __func__);
return; /* don't rearm timer */
}
if ((doorbell & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL) {
rc = mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
pr_warn(MPT3SAS_FMT "%s: hard reset: %s\n", ioc->name,
__func__, (rc == 0) ? "success" : "failed");
doorbell = mpt3sas_base_get_iocstate(ioc, 0);
if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
mpt3sas_base_fault_info(ioc, doorbell &
MPI2_DOORBELL_DATA_MASK);
if (rc && (doorbell & MPI2_IOC_STATE_MASK) !=
MPI2_IOC_STATE_OPERATIONAL)
return; /* don't rearm timer */
}
spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
rearm_timer:
if (ioc->fault_reset_work_q)
queue_delayed_work(ioc->fault_reset_work_q,
&ioc->fault_reset_work,
msecs_to_jiffies(FAULT_POLLING_INTERVAL));
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
}
/**
* mpt3sas_base_start_watchdog - start the fault_reset_work_q
* @ioc: per adapter object
* Context: sleep.
*
* Return nothing.
*/
void
mpt3sas_base_start_watchdog(struct MPT3SAS_ADAPTER *ioc)
{
unsigned long flags;
if (ioc->fault_reset_work_q)
return;
/* initialize fault polling */
INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work);
snprintf(ioc->fault_reset_work_q_name,
sizeof(ioc->fault_reset_work_q_name), "poll_%d_status", ioc->id);
ioc->fault_reset_work_q =
create_singlethread_workqueue(ioc->fault_reset_work_q_name);
if (!ioc->fault_reset_work_q) {
pr_err(MPT3SAS_FMT "%s: failed (line=%d)\n",
ioc->name, __func__, __LINE__);
return;
}
spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
if (ioc->fault_reset_work_q)
queue_delayed_work(ioc->fault_reset_work_q,
&ioc->fault_reset_work,
msecs_to_jiffies(FAULT_POLLING_INTERVAL));
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
}
/**
* mpt3sas_base_stop_watchdog - stop the fault_reset_work_q
* @ioc: per adapter object
* Context: sleep.
*
* Return nothing.
*/
void
mpt3sas_base_stop_watchdog(struct MPT3SAS_ADAPTER *ioc)
{
unsigned long flags;
struct workqueue_struct *wq;
spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
wq = ioc->fault_reset_work_q;
ioc->fault_reset_work_q = NULL;
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
if (wq) {
if (!cancel_delayed_work(&ioc->fault_reset_work))
flush_workqueue(wq);
destroy_workqueue(wq);
}
}
/**
* mpt3sas_base_fault_info - verbose translation of firmware FAULT code
* @ioc: per adapter object
* @fault_code: fault code
*
* Return nothing.
*/
void
mpt3sas_base_fault_info(struct MPT3SAS_ADAPTER *ioc , u16 fault_code)
{
pr_err(MPT3SAS_FMT "fault_state(0x%04x)!\n",
ioc->name, fault_code);
}
/**
* mpt3sas_halt_firmware - halt's mpt controller firmware
* @ioc: per adapter object
*
* For debugging timeout related issues. Writing 0xCOFFEE00
* to the doorbell register will halt controller firmware. With
* the purpose to stop both driver and firmware, the enduser can
* obtain a ring buffer from controller UART.
*/
void
mpt3sas_halt_firmware(struct MPT3SAS_ADAPTER *ioc)
{
u32 doorbell;
if (!ioc->fwfault_debug)
return;
dump_stack();
doorbell = readl(&ioc->chip->Doorbell);
if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
mpt3sas_base_fault_info(ioc , doorbell);
else {
writel(0xC0FFEE00, &ioc->chip->Doorbell);
pr_err(MPT3SAS_FMT "Firmware is halted due to command timeout\n",
ioc->name);
}
if (ioc->fwfault_debug == 2)
for (;;)
;
else
panic("panic in %s\n", __func__);
}
#ifdef CONFIG_SCSI_MPT3SAS_LOGGING
/**
* _base_sas_ioc_info - verbose translation of the ioc status
* @ioc: per adapter object
* @mpi_reply: reply mf payload returned from firmware
* @request_hdr: request mf
*
* Return nothing.
*/
static void
_base_sas_ioc_info(struct MPT3SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
MPI2RequestHeader_t *request_hdr)
{
u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
MPI2_IOCSTATUS_MASK;
char *desc = NULL;
u16 frame_sz;
char *func_str = NULL;
/* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */
if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION)
return;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
return;
switch (ioc_status) {
/****************************************************************************
* Common IOCStatus values for all replies
****************************************************************************/
case MPI2_IOCSTATUS_INVALID_FUNCTION:
desc = "invalid function";
break;
case MPI2_IOCSTATUS_BUSY:
desc = "busy";
break;
case MPI2_IOCSTATUS_INVALID_SGL:
desc = "invalid sgl";
break;
case MPI2_IOCSTATUS_INTERNAL_ERROR:
desc = "internal error";
break;
case MPI2_IOCSTATUS_INVALID_VPID:
desc = "invalid vpid";
break;
case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
desc = "insufficient resources";
break;
case MPI2_IOCSTATUS_INVALID_FIELD:
desc = "invalid field";
break;
case MPI2_IOCSTATUS_INVALID_STATE:
desc = "invalid state";
break;
case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
desc = "op state not supported";
break;
/****************************************************************************
* Config IOCStatus values
****************************************************************************/
case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION:
desc = "config invalid action";
break;
case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE:
desc = "config invalid type";
break;
case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE:
desc = "config invalid page";
break;
case MPI2_IOCSTATUS_CONFIG_INVALID_DATA:
desc = "config invalid data";
break;
case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS:
desc = "config no defaults";
break;
case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT:
desc = "config cant commit";
break;
/****************************************************************************
* SCSI IO Reply
****************************************************************************/
case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
break;
/****************************************************************************
* For use by SCSI Initiator and SCSI Target end-to-end data protection
****************************************************************************/
case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
desc = "eedp guard error";
break;
case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
desc = "eedp ref tag error";
break;
case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
desc = "eedp app tag error";
break;
/****************************************************************************
* SCSI Target values
****************************************************************************/
case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX:
desc = "target invalid io index";
break;
case MPI2_IOCSTATUS_TARGET_ABORTED:
desc = "target aborted";
break;
case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE:
desc = "target no conn retryable";
break;
case MPI2_IOCSTATUS_TARGET_NO_CONNECTION:
desc = "target no connection";
break;
case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH:
desc = "target xfer count mismatch";
break;
case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR:
desc = "target data offset error";
break;
case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA:
desc = "target too much write data";
break;
case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT:
desc = "target iu too short";
break;
case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT:
desc = "target ack nak timeout";
break;
case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED:
desc = "target nak received";
break;
/****************************************************************************
* Serial Attached SCSI values
****************************************************************************/
case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED:
desc = "smp request failed";
break;
case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN:
desc = "smp data overrun";
break;
/****************************************************************************
* Diagnostic Buffer Post / Diagnostic Release values
****************************************************************************/
case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED:
desc = "diagnostic released";
break;
default:
break;
}
if (!desc)
return;
switch (request_hdr->Function) {
case MPI2_FUNCTION_CONFIG:
frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size;
func_str = "config_page";
break;
case MPI2_FUNCTION_SCSI_TASK_MGMT:
frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t);
func_str = "task_mgmt";
break;
case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t);
func_str = "sas_iounit_ctl";
break;
case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR:
frame_sz = sizeof(Mpi2SepRequest_t);
func_str = "enclosure";
break;
case MPI2_FUNCTION_IOC_INIT:
frame_sz = sizeof(Mpi2IOCInitRequest_t);
func_str = "ioc_init";
break;
case MPI2_FUNCTION_PORT_ENABLE:
frame_sz = sizeof(Mpi2PortEnableRequest_t);
func_str = "port_enable";
break;
case MPI2_FUNCTION_SMP_PASSTHROUGH:
frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size;
func_str = "smp_passthru";
break;
default:
frame_sz = 32;
func_str = "unknown";
break;
}
pr_warn(MPT3SAS_FMT "ioc_status: %s(0x%04x), request(0x%p),(%s)\n",
ioc->name, desc, ioc_status, request_hdr, func_str);
_debug_dump_mf(request_hdr, frame_sz/4);
}
/**
* _base_display_event_data - verbose translation of firmware asyn events
* @ioc: per adapter object
* @mpi_reply: reply mf payload returned from firmware
*
* Return nothing.
*/
static void
_base_display_event_data(struct MPT3SAS_ADAPTER *ioc,
Mpi2EventNotificationReply_t *mpi_reply)
{
char *desc = NULL;
u16 event;
if (!(ioc->logging_level & MPT_DEBUG_EVENTS))
return;
event = le16_to_cpu(mpi_reply->Event);
switch (event) {
case MPI2_EVENT_LOG_DATA:
desc = "Log Data";
break;
case MPI2_EVENT_STATE_CHANGE:
desc = "Status Change";
break;
case MPI2_EVENT_HARD_RESET_RECEIVED:
desc = "Hard Reset Received";
break;
case MPI2_EVENT_EVENT_CHANGE:
desc = "Event Change";
break;
case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
desc = "Device Status Change";
break;
case MPI2_EVENT_IR_OPERATION_STATUS:
desc = "IR Operation Status";
break;
case MPI2_EVENT_SAS_DISCOVERY:
{
Mpi2EventDataSasDiscovery_t *event_data =
(Mpi2EventDataSasDiscovery_t *)mpi_reply->EventData;
pr_info(MPT3SAS_FMT "Discovery: (%s)", ioc->name,
(event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
"start" : "stop");
if (event_data->DiscoveryStatus)
pr_info("discovery_status(0x%08x)",
le32_to_cpu(event_data->DiscoveryStatus));
pr_info("\n");
return;
}
case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
desc = "SAS Broadcast Primitive";
break;
case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE:
desc = "SAS Init Device Status Change";
break;
case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW:
desc = "SAS Init Table Overflow";
break;
case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
desc = "SAS Topology Change List";
break;
case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
desc = "SAS Enclosure Device Status Change";
break;
case MPI2_EVENT_IR_VOLUME:
desc = "IR Volume";
break;
case MPI2_EVENT_IR_PHYSICAL_DISK:
desc = "IR Physical Disk";
break;
case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
desc = "IR Configuration Change List";
break;
case MPI2_EVENT_LOG_ENTRY_ADDED:
desc = "Log Entry Added";
break;
}
if (!desc)
return;
pr_info(MPT3SAS_FMT "%s\n", ioc->name, desc);
}
#endif
/**
* _base_sas_log_info - verbose translation of firmware log info
* @ioc: per adapter object
* @log_info: log info
*
* Return nothing.
*/
static void
_base_sas_log_info(struct MPT3SAS_ADAPTER *ioc , u32 log_info)
{
union loginfo_type {
u32 loginfo;
struct {
u32 subcode:16;
u32 code:8;
u32 originator:4;
u32 bus_type:4;
} dw;
};
union loginfo_type sas_loginfo;
char *originator_str = NULL;
sas_loginfo.loginfo = log_info;
if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
return;
/* each nexus loss loginfo */
if (log_info == 0x31170000)
return;
/* eat the loginfos associated with task aborts */
if (ioc->ignore_loginfos && (log_info == 0x30050000 || log_info ==
0x31140000 || log_info == 0x31130000))
return;
switch (sas_loginfo.dw.originator) {
case 0:
originator_str = "IOP";
break;
case 1:
originator_str = "PL";
break;
case 2:
originator_str = "IR";
break;
}
pr_warn(MPT3SAS_FMT
"log_info(0x%08x): originator(%s), code(0x%02x), sub_code(0x%04x)\n",
ioc->name, log_info,
originator_str, sas_loginfo.dw.code,
sas_loginfo.dw.subcode);
}
/**
* _base_display_reply_info -
* @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)
*
* Return nothing.
*/
static void
_base_display_reply_info(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
u32 reply)
{
MPI2DefaultReply_t *mpi_reply;
u16 ioc_status;
u32 loginfo = 0;
mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
if (unlikely(!mpi_reply)) {
pr_err(MPT3SAS_FMT "mpi_reply not valid at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return;
}
ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
#ifdef CONFIG_SCSI_MPT3SAS_LOGGING
if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
(ioc->logging_level & MPT_DEBUG_REPLY)) {
_base_sas_ioc_info(ioc , mpi_reply,
mpt3sas_base_get_msg_frame(ioc, smid));
}
#endif
if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) {
loginfo = le32_to_cpu(mpi_reply->IOCLogInfo);
_base_sas_log_info(ioc, loginfo);
}
if (ioc_status || loginfo) {
ioc_status &= MPI2_IOCSTATUS_MASK;
mpt3sas_trigger_mpi(ioc, ioc_status, loginfo);
}
}
/**
* mpt3sas_base_done - base internal command 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)
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
u8
mpt3sas_base_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
u32 reply)
{
MPI2DefaultReply_t *mpi_reply;
mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
return 1;
if (ioc->base_cmds.status == MPT3_CMD_NOT_USED)
return 1;
ioc->base_cmds.status |= MPT3_CMD_COMPLETE;
if (mpi_reply) {
ioc->base_cmds.status |= MPT3_CMD_REPLY_VALID;
memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
}
ioc->base_cmds.status &= ~MPT3_CMD_PENDING;
complete(&ioc->base_cmds.done);
return 1;
}
/**
* _base_async_event - main callback handler for firmware asyn events
* @ioc: per adapter object
* @msix_index: MSIX table index supplied by the OS
* @reply: reply message frame(lower 32bit addr)
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
static u8
_base_async_event(struct MPT3SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
{
Mpi2EventNotificationReply_t *mpi_reply;
Mpi2EventAckRequest_t *ack_request;
u16 smid;
mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
if (!mpi_reply)
return 1;
if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
return 1;
#ifdef CONFIG_SCSI_MPT3SAS_LOGGING
_base_display_event_data(ioc, mpi_reply);
#endif
if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
goto out;
smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx);
if (!smid) {
pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
goto out;
}
ack_request = mpt3sas_base_get_msg_frame(ioc, smid);
memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
ack_request->Event = mpi_reply->Event;
ack_request->EventContext = mpi_reply->EventContext;
ack_request->VF_ID = 0; /* TODO */
ack_request->VP_ID = 0;
mpt3sas_base_put_smid_default(ioc, smid);
out:
/* scsih callback handler */
mpt3sas_scsih_event_callback(ioc, msix_index, reply);
/* ctl callback handler */
mpt3sas_ctl_event_callback(ioc, msix_index, reply);
return 1;
}
/**
* _base_get_cb_idx - obtain the callback index
* @ioc: per adapter object
* @smid: system request message index
*
* Return callback index.
*/
static u8
_base_get_cb_idx(struct MPT3SAS_ADAPTER *ioc, u16 smid)
{
int i;
u8 cb_idx;
if (smid < ioc->hi_priority_smid) {
i = smid - 1;
cb_idx = ioc->scsi_lookup[i].cb_idx;
} else if (smid < ioc->internal_smid) {
i = smid - ioc->hi_priority_smid;
cb_idx = ioc->hpr_lookup[i].cb_idx;
} else if (smid <= ioc->hba_queue_depth) {
i = smid - ioc->internal_smid;
cb_idx = ioc->internal_lookup[i].cb_idx;
} else
cb_idx = 0xFF;
return cb_idx;
}
/**
* _base_mask_interrupts - disable interrupts
* @ioc: per adapter object
*
* Disabling ResetIRQ, Reply and Doorbell Interrupts
*
* Return nothing.
*/
static void
_base_mask_interrupts(struct MPT3SAS_ADAPTER *ioc)
{
u32 him_register;
ioc->mask_interrupts = 1;
him_register = readl(&ioc->chip->HostInterruptMask);
him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
writel(him_register, &ioc->chip->HostInterruptMask);
readl(&ioc->chip->HostInterruptMask);
}
/**
* _base_unmask_interrupts - enable interrupts
* @ioc: per adapter object
*
* Enabling only Reply Interrupts
*
* Return nothing.
*/
static void
_base_unmask_interrupts(struct MPT3SAS_ADAPTER *ioc)
{
u32 him_register;
him_register = readl(&ioc->chip->HostInterruptMask);
him_register &= ~MPI2_HIM_RIM;
writel(him_register, &ioc->chip->HostInterruptMask);
ioc->mask_interrupts = 0;
}
union reply_descriptor {
u64 word;
struct {
u32 low;
u32 high;
} u;
};
/**
* _base_interrupt - MPT adapter (IOC) specific interrupt handler.
* @irq: irq number (not used)
* @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
* @r: pt_regs pointer (not used)
*
* Return IRQ_HANDLE if processed, else IRQ_NONE.
*/
static irqreturn_t
_base_interrupt(int irq, void *bus_id)
{
struct adapter_reply_queue *reply_q = bus_id;
union reply_descriptor rd;
u32 completed_cmds;
u8 request_desript_type;
u16 smid;
u8 cb_idx;
u32 reply;
u8 msix_index = reply_q->msix_index;
struct MPT3SAS_ADAPTER *ioc = reply_q->ioc;
Mpi2ReplyDescriptorsUnion_t *rpf;
u8 rc;
if (ioc->mask_interrupts)
return IRQ_NONE;
if (!atomic_add_unless(&reply_q->busy, 1, 1))
return IRQ_NONE;
rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index];
request_desript_type = rpf->Default.ReplyFlags
& MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
atomic_dec(&reply_q->busy);
return IRQ_NONE;
}
completed_cmds = 0;
cb_idx = 0xFF;
do {
rd.word = le64_to_cpu(rpf->Words);
if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
goto out;
reply = 0;
smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
if (request_desript_type ==
MPI25_RPY_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO_SUCCESS ||
request_desript_type ==
MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
cb_idx = _base_get_cb_idx(ioc, smid);
if ((likely(cb_idx < MPT_MAX_CALLBACKS)) &&
(likely(mpt_callbacks[cb_idx] != NULL))) {
rc = mpt_callbacks[cb_idx](ioc, smid,
msix_index, 0);
if (rc)
mpt3sas_base_free_smid(ioc, smid);
}
} else if (request_desript_type ==
MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
reply = le32_to_cpu(
rpf->AddressReply.ReplyFrameAddress);
if (reply > ioc->reply_dma_max_address ||
reply < ioc->reply_dma_min_address)
reply = 0;
if (smid) {
cb_idx = _base_get_cb_idx(ioc, smid);
if ((likely(cb_idx < MPT_MAX_CALLBACKS)) &&
(likely(mpt_callbacks[cb_idx] != NULL))) {
rc = mpt_callbacks[cb_idx](ioc, smid,
msix_index, reply);
if (reply)
_base_display_reply_info(ioc,
smid, msix_index, reply);
if (rc)
mpt3sas_base_free_smid(ioc,
smid);
}
} else {
_base_async_event(ioc, msix_index, reply);
}
/* reply free queue handling */
if (reply) {
ioc->reply_free_host_index =
(ioc->reply_free_host_index ==
(ioc->reply_free_queue_depth - 1)) ?
0 : ioc->reply_free_host_index + 1;
ioc->reply_free[ioc->reply_free_host_index] =
cpu_to_le32(reply);
wmb();
writel(ioc->reply_free_host_index,
&ioc->chip->ReplyFreeHostIndex);
}
}
rpf->Words = cpu_to_le64(ULLONG_MAX);
reply_q->reply_post_host_index =
(reply_q->reply_post_host_index ==
(ioc->reply_post_queue_depth - 1)) ? 0 :
reply_q->reply_post_host_index + 1;
request_desript_type =
reply_q->reply_post_free[reply_q->reply_post_host_index].
Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
completed_cmds++;
if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
goto out;
if (!reply_q->reply_post_host_index)
rpf = reply_q->reply_post_free;
else
rpf++;
} while (1);
out:
if (!completed_cmds) {
atomic_dec(&reply_q->busy);
return IRQ_NONE;
}
wmb();
writel(reply_q->reply_post_host_index | (msix_index <<
MPI2_RPHI_MSIX_INDEX_SHIFT), &ioc->chip->ReplyPostHostIndex);
atomic_dec(&reply_q->busy);
return IRQ_HANDLED;
}
/**
* _base_is_controller_msix_enabled - is controller support muli-reply queues
* @ioc: per adapter object
*
*/
static inline int
_base_is_controller_msix_enabled(struct MPT3SAS_ADAPTER *ioc)
{
return (ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable;
}
/**
* mpt3sas_base_flush_reply_queues - flushing the MSIX reply queues
* @ioc: per adapter object
* Context: ISR conext
*
* Called when a Task Management request has completed. We want
* to flush the other reply queues so all the outstanding IO has been
* completed back to OS before we process the TM completetion.
*
* Return nothing.
*/
void
mpt3sas_base_flush_reply_queues(struct MPT3SAS_ADAPTER *ioc)
{
struct adapter_reply_queue *reply_q;
/* If MSIX capability is turned off
* then multi-queues are not enabled
*/
if (!_base_is_controller_msix_enabled(ioc))
return;
list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
if (ioc->shost_recovery)
return;
/* TMs are on msix_index == 0 */
if (reply_q->msix_index == 0)
continue;
_base_interrupt(reply_q->vector, (void *)reply_q);
}
}
/**
* mpt3sas_base_release_callback_handler - clear interrupt callback handler
* @cb_idx: callback index
*
* Return nothing.
*/
void
mpt3sas_base_release_callback_handler(u8 cb_idx)
{
mpt_callbacks[cb_idx] = NULL;
}
/**
* mpt3sas_base_register_callback_handler - obtain index for the interrupt callback handler
* @cb_func: callback function
*
* Returns cb_func.
*/
u8
mpt3sas_base_register_callback_handler(MPT_CALLBACK cb_func)
{
u8 cb_idx;
for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
if (mpt_callbacks[cb_idx] == NULL)
break;
mpt_callbacks[cb_idx] = cb_func;
return cb_idx;
}
/**
* mpt3sas_base_initialize_callback_handler - initialize the interrupt callback handler
*
* Return nothing.
*/
void
mpt3sas_base_initialize_callback_handler(void)
{
u8 cb_idx;
for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
mpt3sas_base_release_callback_handler(cb_idx);
}
/**
* _base_build_zero_len_sge - build zero length sg entry
* @ioc: per adapter object
* @paddr: virtual address for SGE
*
* Create a zero length scatter gather entry to insure the IOCs hardware has
* something to use if the target device goes brain dead and tries
* to send data even when none is asked for.
*
* Return nothing.
*/
static void
_base_build_zero_len_sge(struct MPT3SAS_ADAPTER *ioc, void *paddr)
{
u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
MPI2_SGE_FLAGS_SHIFT);
ioc->base_add_sg_single(paddr, flags_length, -1);
}
/**
* _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
* @paddr: virtual address for SGE
* @flags_length: SGE flags and data transfer length
* @dma_addr: Physical address
*
* Return nothing.
*/
static void
_base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
{
Mpi2SGESimple32_t *sgel = paddr;
flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
sgel->FlagsLength = cpu_to_le32(flags_length);
sgel->Address = cpu_to_le32(dma_addr);
}
/**
* _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
* @paddr: virtual address for SGE
* @flags_length: SGE flags and data transfer length
* @dma_addr: Physical address
*
* Return nothing.
*/
static void
_base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
{
Mpi2SGESimple64_t *sgel = paddr;
flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
sgel->FlagsLength = cpu_to_le32(flags_length);
sgel->Address = cpu_to_le64(dma_addr);
}
/**
* _base_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 *
_base_get_chain_buffer_tracker(struct MPT3SAS_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, pr_warn(MPT3SAS_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;
}
/**
* _base_build_sg - build generic sg
* @ioc: per adapter object
* @psge: virtual address for SGE
* @data_out_dma: physical address for WRITES
* @data_out_sz: data xfer size for WRITES
* @data_in_dma: physical address for READS
* @data_in_sz: data xfer size for READS
*
* Return nothing.
*/
static void
_base_build_sg(struct MPT3SAS_ADAPTER *ioc, void *psge,
dma_addr_t data_out_dma, size_t data_out_sz, dma_addr_t data_in_dma,
size_t data_in_sz)
{
u32 sgl_flags;
if (!data_out_sz && !data_in_sz) {
_base_build_zero_len_sge(ioc, psge);
return;
}
if (data_out_sz && data_in_sz) {
/* WRITE sgel first */
sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
ioc->base_add_sg_single(psge, sgl_flags |
data_out_sz, data_out_dma);
/* incr sgel */
psge += ioc->sge_size;
/* READ sgel last */
sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
MPI2_SGE_FLAGS_END_OF_LIST);
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
ioc->base_add_sg_single(psge, sgl_flags |
data_in_sz, data_in_dma);
} else if (data_out_sz) /* WRITE */ {
sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
MPI2_SGE_FLAGS_END_OF_LIST | MPI2_SGE_FLAGS_HOST_TO_IOC);
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
ioc->base_add_sg_single(psge, sgl_flags |
data_out_sz, data_out_dma);
} else if (data_in_sz) /* READ */ {
sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
MPI2_SGE_FLAGS_END_OF_LIST);
sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
ioc->base_add_sg_single(psge, sgl_flags |
data_in_sz, data_in_dma);
}
}
/* IEEE format sgls */
/**
* _base_add_sg_single_ieee - add sg element for IEEE format
* @paddr: virtual address for SGE
* @flags: SGE flags
* @chain_offset: number of 128 byte elements from start of segment
* @length: data transfer length
* @dma_addr: Physical address
*
* Return nothing.
*/
static void
_base_add_sg_single_ieee(void *paddr, u8 flags, u8 chain_offset, u32 length,
dma_addr_t dma_addr)
{
Mpi25IeeeSgeChain64_t *sgel = paddr;
sgel->Flags = flags;
sgel->NextChainOffset = chain_offset;
sgel->Length = cpu_to_le32(length);
sgel->Address = cpu_to_le64(dma_addr);
}
/**
* _base_build_zero_len_sge_ieee - build zero length sg entry for IEEE format
* @ioc: per adapter object
* @paddr: virtual address for SGE
*
* Create a zero length scatter gather entry to insure the IOCs hardware has
* something to use if the target device goes brain dead and tries
* to send data even when none is asked for.
*
* Return nothing.
*/
static void
_base_build_zero_len_sge_ieee(struct MPT3SAS_ADAPTER *ioc, void *paddr)
{
u8 sgl_flags = (MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR |
MPI25_IEEE_SGE_FLAGS_END_OF_LIST);
_base_add_sg_single_ieee(paddr, sgl_flags, 0, 0, -1);
}
/**
* _base_build_sg_scmd_ieee - main sg creation routine for IEEE format
* @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
_base_build_sg_scmd_ieee(struct MPT3SAS_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;
int sges_left;
u32 sges_in_segment;
u8 simple_sgl_flags;
u8 simple_sgl_flags_last;
u8 chain_sgl_flags;
struct chain_tracker *chain_req;
mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
/* init scatter gather flags */
simple_sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
simple_sgl_flags_last = simple_sgl_flags |
MPI25_IEEE_SGE_FLAGS_END_OF_LIST;
chain_sgl_flags = MPI2_IEEE_SGE_FLAGS_CHAIN_ELEMENT |
MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
sg_scmd = scsi_sglist(scmd);
sges_left = scsi_dma_map(scmd);
if (!sges_left) {
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->request_sz -
offsetof(Mpi2SCSIIORequest_t, SGL))/ioc->sge_size_ieee;
if (sges_left <= sges_in_segment)
goto fill_in_last_segment;
mpi_request->ChainOffset = (sges_in_segment - 1 /* chain element */) +
(offsetof(Mpi2SCSIIORequest_t, SGL)/ioc->sge_size_ieee);
/* fill in main message segment when there is a chain following */
while (sges_in_segment > 1) {
_base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0,
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += ioc->sge_size_ieee;
sges_left--;
sges_in_segment--;
}
/* initializing the pointers */
chain_req = _base_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;
chain_length = sges_in_segment * ioc->sge_size_ieee;
if (chain_offset)
chain_length += ioc->sge_size_ieee;
_base_add_sg_single_ieee(sg_local, chain_sgl_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) {
_base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0,
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += ioc->sge_size_ieee;
sges_left--;
sges_in_segment--;
}
chain_req = _base_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)
_base_add_sg_single_ieee(sg_local,
simple_sgl_flags_last, 0, sg_dma_len(sg_scmd),
sg_dma_address(sg_scmd));
else
_base_add_sg_single_ieee(sg_local, simple_sgl_flags, 0,
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += ioc->sge_size_ieee;
sges_left--;
}
return 0;
}
/**
* _base_build_sg_ieee - build generic sg for IEEE format
* @ioc: per adapter object
* @psge: virtual address for SGE
* @data_out_dma: physical address for WRITES
* @data_out_sz: data xfer size for WRITES
* @data_in_dma: physical address for READS
* @data_in_sz: data xfer size for READS
*
* Return nothing.
*/
static void
_base_build_sg_ieee(struct MPT3SAS_ADAPTER *ioc, void *psge,
dma_addr_t data_out_dma, size_t data_out_sz, dma_addr_t data_in_dma,
size_t data_in_sz)
{
u8 sgl_flags;
if (!data_out_sz && !data_in_sz) {
_base_build_zero_len_sge_ieee(ioc, psge);
return;
}
if (data_out_sz && data_in_sz) {
/* WRITE sgel first */
sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
_base_add_sg_single_ieee(psge, sgl_flags, 0, data_out_sz,
data_out_dma);
/* incr sgel */
psge += ioc->sge_size_ieee;
/* READ sgel last */
sgl_flags |= MPI25_IEEE_SGE_FLAGS_END_OF_LIST;
_base_add_sg_single_ieee(psge, sgl_flags, 0, data_in_sz,
data_in_dma);
} else if (data_out_sz) /* WRITE */ {
sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
MPI25_IEEE_SGE_FLAGS_END_OF_LIST |
MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
_base_add_sg_single_ieee(psge, sgl_flags, 0, data_out_sz,
data_out_dma);
} else if (data_in_sz) /* READ */ {
sgl_flags = MPI2_IEEE_SGE_FLAGS_SIMPLE_ELEMENT |
MPI25_IEEE_SGE_FLAGS_END_OF_LIST |
MPI2_IEEE_SGE_FLAGS_SYSTEM_ADDR;
_base_add_sg_single_ieee(psge, sgl_flags, 0, data_in_sz,
data_in_dma);
}
}
#define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
/**
* _base_config_dma_addressing - set dma addressing
* @ioc: per adapter object
* @pdev: PCI device struct
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev)
{
struct sysinfo s;
char *desc = NULL;
if (sizeof(dma_addr_t) > 4) {
const uint64_t required_mask =
dma_get_required_mask(&pdev->dev);
if ((required_mask > DMA_BIT_MASK(32)) &&
!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) &&
!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
ioc->base_add_sg_single = &_base_add_sg_single_64;
ioc->sge_size = sizeof(Mpi2SGESimple64_t);
desc = "64";
goto out;
}
}
if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
&& !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
ioc->base_add_sg_single = &_base_add_sg_single_32;
ioc->sge_size = sizeof(Mpi2SGESimple32_t);
desc = "32";
} else
return -ENODEV;
out:
si_meminfo(&s);
pr_info(MPT3SAS_FMT
"%s BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (%ld kB)\n",
ioc->name, desc, convert_to_kb(s.totalram));
return 0;
}
/**
* _base_check_enable_msix - checks MSIX capabable.
* @ioc: per adapter object
*
* Check to see if card is capable of MSIX, and set number
* of available msix vectors
*/
static int
_base_check_enable_msix(struct MPT3SAS_ADAPTER *ioc)
{
int base;
u16 message_control;
base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
if (!base) {
dfailprintk(ioc, pr_info(MPT3SAS_FMT "msix not supported\n",
ioc->name));
return -EINVAL;
}
/* get msix vector count */
pci_read_config_word(ioc->pdev, base + 2, &message_control);
ioc->msix_vector_count = (message_control & 0x3FF) + 1;
if (ioc->msix_vector_count > 8)
ioc->msix_vector_count = 8;
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"msix is supported, vector_count(%d)\n",
ioc->name, ioc->msix_vector_count));
return 0;
}
/**
* _base_free_irq - free irq
* @ioc: per adapter object
*
* Freeing respective reply_queue from the list.
*/
static void
_base_free_irq(struct MPT3SAS_ADAPTER *ioc)
{
struct adapter_reply_queue *reply_q, *next;
if (list_empty(&ioc->reply_queue_list))
return;
list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
list_del(&reply_q->list);
synchronize_irq(reply_q->vector);
free_irq(reply_q->vector, reply_q);
kfree(reply_q);
}
}
/**
* _base_request_irq - request irq
* @ioc: per adapter object
* @index: msix index into vector table
* @vector: irq vector
*
* Inserting respective reply_queue into the list.
*/
static int
_base_request_irq(struct MPT3SAS_ADAPTER *ioc, u8 index, u32 vector)
{
struct adapter_reply_queue *reply_q;
int r;
reply_q = kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL);
if (!reply_q) {
pr_err(MPT3SAS_FMT "unable to allocate memory %d!\n",
ioc->name, (int)sizeof(struct adapter_reply_queue));
return -ENOMEM;
}
reply_q->ioc = ioc;
reply_q->msix_index = index;
reply_q->vector = vector;
atomic_set(&reply_q->busy, 0);
if (ioc->msix_enable)
snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d",
MPT3SAS_DRIVER_NAME, ioc->id, index);
else
snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d",
MPT3SAS_DRIVER_NAME, ioc->id);
r = request_irq(vector, _base_interrupt, IRQF_SHARED, reply_q->name,
reply_q);
if (r) {
pr_err(MPT3SAS_FMT "unable to allocate interrupt %d!\n",
reply_q->name, vector);
kfree(reply_q);
return -EBUSY;
}
INIT_LIST_HEAD(&reply_q->list);
list_add_tail(&reply_q->list, &ioc->reply_queue_list);
return 0;
}
/**
* _base_assign_reply_queues - assigning msix index for each cpu
* @ioc: per adapter object
*
* The enduser would need to set the affinity via /proc/irq/#/smp_affinity
*
* It would nice if we could call irq_set_affinity, however it is not
* an exported symbol
*/
static void
_base_assign_reply_queues(struct MPT3SAS_ADAPTER *ioc)
{
struct adapter_reply_queue *reply_q;
int cpu_id;
int cpu_grouping, loop, grouping, grouping_mod;
int reply_queue;
if (!_base_is_controller_msix_enabled(ioc))
return;
memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz);
/* NUMA Hardware bug workaround - drop to less reply queues */
if (ioc->reply_queue_count > ioc->facts.MaxMSIxVectors) {
ioc->reply_queue_count = ioc->facts.MaxMSIxVectors;
reply_queue = 0;
list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
reply_q->msix_index = reply_queue;
if (++reply_queue == ioc->reply_queue_count)
reply_queue = 0;
}
}
/* when there are more cpus than available msix vectors,
* then group cpus togeather on same irq
*/
if (ioc->cpu_count > ioc->msix_vector_count) {
grouping = ioc->cpu_count / ioc->msix_vector_count;
grouping_mod = ioc->cpu_count % ioc->msix_vector_count;
if (grouping < 2 || (grouping == 2 && !grouping_mod))
cpu_grouping = 2;
else if (grouping < 4 || (grouping == 4 && !grouping_mod))
cpu_grouping = 4;
else if (grouping < 8 || (grouping == 8 && !grouping_mod))
cpu_grouping = 8;
else
cpu_grouping = 16;
} else
cpu_grouping = 0;
loop = 0;
reply_q = list_entry(ioc->reply_queue_list.next,
struct adapter_reply_queue, list);
for_each_online_cpu(cpu_id) {
if (!cpu_grouping) {
ioc->cpu_msix_table[cpu_id] = reply_q->msix_index;
reply_q = list_entry(reply_q->list.next,
struct adapter_reply_queue, list);
} else {
if (loop < cpu_grouping) {
ioc->cpu_msix_table[cpu_id] =
reply_q->msix_index;
loop++;
} else {
reply_q = list_entry(reply_q->list.next,
struct adapter_reply_queue, list);
ioc->cpu_msix_table[cpu_id] =
reply_q->msix_index;
loop = 1;
}
}
}
}
/**
* _base_disable_msix - disables msix
* @ioc: per adapter object
*
*/
static void
_base_disable_msix(struct MPT3SAS_ADAPTER *ioc)
{
if (!ioc->msix_enable)
return;
pci_disable_msix(ioc->pdev);
ioc->msix_enable = 0;
}
/**
* _base_enable_msix - enables msix, failback to io_apic
* @ioc: per adapter object
*
*/
static int
_base_enable_msix(struct MPT3SAS_ADAPTER *ioc)
{
struct msix_entry *entries, *a;
int r;
int i;
u8 try_msix = 0;
INIT_LIST_HEAD(&ioc->reply_queue_list);
if (msix_disable == -1 || msix_disable == 0)
try_msix = 1;
if (!try_msix)
goto try_ioapic;
if (_base_check_enable_msix(ioc) != 0)
goto try_ioapic;
ioc->reply_queue_count = min_t(int, ioc->cpu_count,
ioc->msix_vector_count);
entries = kcalloc(ioc->reply_queue_count, sizeof(struct msix_entry),
GFP_KERNEL);
if (!entries) {
dfailprintk(ioc, pr_info(MPT3SAS_FMT
"kcalloc failed @ at %s:%d/%s() !!!\n",
ioc->name, __FILE__, __LINE__, __func__));
goto try_ioapic;
}
for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++)
a->entry = i;
r = pci_enable_msix(ioc->pdev, entries, ioc->reply_queue_count);
if (r) {
dfailprintk(ioc, pr_info(MPT3SAS_FMT
"pci_enable_msix failed (r=%d) !!!\n",
ioc->name, r));
kfree(entries);
goto try_ioapic;
}
ioc->msix_enable = 1;
for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++) {
r = _base_request_irq(ioc, i, a->vector);
if (r) {
_base_free_irq(ioc);
_base_disable_msix(ioc);
kfree(entries);
goto try_ioapic;
}
}
kfree(entries);
return 0;
/* failback to io_apic interrupt routing */
try_ioapic:
r = _base_request_irq(ioc, 0, ioc->pdev->irq);
return r;
}
/**
* mpt3sas_base_map_resources - map in controller resources (io/irq/memap)
* @ioc: per adapter object
*
* Returns 0 for success, non-zero for failure.
*/
int
mpt3sas_base_map_resources(struct MPT3SAS_ADAPTER *ioc)
{
struct pci_dev *pdev = ioc->pdev;
u32 memap_sz;
u32 pio_sz;
int i, r = 0;
u64 pio_chip = 0;
u64 chip_phys = 0;
struct adapter_reply_queue *reply_q;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n",
ioc->name, __func__));
ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
if (pci_enable_device_mem(pdev)) {
pr_warn(MPT3SAS_FMT "pci_enable_device_mem: failed\n",
ioc->name);
return -ENODEV;
}
if (pci_request_selected_regions(pdev, ioc->bars,
MPT3SAS_DRIVER_NAME)) {
pr_warn(MPT3SAS_FMT "pci_request_selected_regions: failed\n",
ioc->name);
r = -ENODEV;
goto out_fail;
}
/* AER (Advanced Error Reporting) hooks */
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
if (_base_config_dma_addressing(ioc, pdev) != 0) {
pr_warn(MPT3SAS_FMT "no suitable DMA mask for %s\n",
ioc->name, pci_name(pdev));
r = -ENODEV;
goto out_fail;
}
for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
if (pio_sz)
continue;
pio_chip = (u64)pci_resource_start(pdev, i);
pio_sz = pci_resource_len(pdev, i);
} else if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
if (memap_sz)
continue;
ioc->chip_phys = pci_resource_start(pdev, i);
chip_phys = (u64)ioc->chip_phys;
memap_sz = pci_resource_len(pdev, i);
ioc->chip = ioremap(ioc->chip_phys, memap_sz);
if (ioc->chip == NULL) {
pr_err(MPT3SAS_FMT "unable to map adapter memory!\n",
ioc->name);
r = -EINVAL;
goto out_fail;
}
}
}
_base_mask_interrupts(ioc);
r = _base_enable_msix(ioc);
if (r)
goto out_fail;
list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
pr_info(MPT3SAS_FMT "%s: IRQ %d\n",
reply_q->name, ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
"IO-APIC enabled"), reply_q->vector);
pr_info(MPT3SAS_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
pr_info(MPT3SAS_FMT "ioport(0x%016llx), size(%d)\n",
ioc->name, (unsigned long long)pio_chip, pio_sz);
/* Save PCI configuration state for recovery from PCI AER/EEH errors */
pci_save_state(pdev);
return 0;
out_fail:
if (ioc->chip_phys)
iounmap(ioc->chip);
ioc->chip_phys = 0;
pci_release_selected_regions(ioc->pdev, ioc->bars);
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
return r;
}
/**
* mpt3sas_base_get_msg_frame - obtain request mf pointer
* @ioc: per adapter object
* @smid: system request message index(smid zero is invalid)
*
* Returns virt pointer to message frame.
*/
void *
mpt3sas_base_get_msg_frame(struct MPT3SAS_ADAPTER *ioc, u16 smid)
{
return (void *)(ioc->request + (smid * ioc->request_sz));
}
/**
* mpt3sas_base_get_sense_buffer - obtain a sense buffer virt addr
* @ioc: per adapter object
* @smid: system request message index
*
* Returns virt pointer to sense buffer.
*/
void *
mpt3sas_base_get_sense_buffer(struct MPT3SAS_ADAPTER *ioc, u16 smid)
{
return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
}
/**
* mpt3sas_base_get_sense_buffer_dma - obtain a sense buffer dma addr
* @ioc: per adapter object
* @smid: system request message index
*
* Returns phys pointer to the low 32bit address of the sense buffer.
*/
__le32
mpt3sas_base_get_sense_buffer_dma(struct MPT3SAS_ADAPTER *ioc, u16 smid)
{
return cpu_to_le32(ioc->sense_dma + ((smid - 1) *
SCSI_SENSE_BUFFERSIZE));
}
/**
* mpt3sas_base_get_reply_virt_addr - obtain reply frames virt address
* @ioc: per adapter object
* @phys_addr: lower 32 physical addr of the reply
*
* Converts 32bit lower physical addr into a virt address.
*/
void *
mpt3sas_base_get_reply_virt_addr(struct MPT3SAS_ADAPTER *ioc, u32 phys_addr)
{
if (!phys_addr)
return NULL;
return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
}
/**
* mpt3sas_base_get_smid - obtain a free smid from internal queue
* @ioc: per adapter object
* @cb_idx: callback index
*
* Returns smid (zero is invalid)
*/
u16
mpt3sas_base_get_smid(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx)
{
unsigned long flags;
struct request_tracker *request;
u16 smid;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
if (list_empty(&ioc->internal_free_list)) {
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
pr_err(MPT3SAS_FMT "%s: smid not available\n",
ioc->name, __func__);
return 0;
}
request = list_entry(ioc->internal_free_list.next,
struct request_tracker, tracker_list);
request->cb_idx = cb_idx;
smid = request->smid;
list_del(&request->tracker_list);
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return smid;
}
/**
* mpt3sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
* @ioc: per adapter object
* @cb_idx: callback index
* @scmd: pointer to scsi command object
*
* Returns smid (zero is invalid)
*/
u16
mpt3sas_base_get_smid_scsiio(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx,
struct scsi_cmnd *scmd)
{
unsigned long flags;
struct scsiio_tracker *request;
u16 smid;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
if (list_empty(&ioc->free_list)) {
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
pr_err(MPT3SAS_FMT "%s: smid not available\n",
ioc->name, __func__);
return 0;
}
request = list_entry(ioc->free_list.next,
struct scsiio_tracker, tracker_list);
request->scmd = scmd;
request->cb_idx = cb_idx;
smid = request->smid;
list_del(&request->tracker_list);
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return smid;
}
/**
* mpt3sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
* @ioc: per adapter object
* @cb_idx: callback index
*
* Returns smid (zero is invalid)
*/
u16
mpt3sas_base_get_smid_hpr(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx)
{
unsigned long flags;
struct request_tracker *request;
u16 smid;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
if (list_empty(&ioc->hpr_free_list)) {
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return 0;
}
request = list_entry(ioc->hpr_free_list.next,
struct request_tracker, tracker_list);
request->cb_idx = cb_idx;
smid = request->smid;
list_del(&request->tracker_list);
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return smid;
}
/**
* mpt3sas_base_free_smid - put smid back on free_list
* @ioc: per adapter object
* @smid: system request message index
*
* Return nothing.
*/
void
mpt3sas_base_free_smid(struct MPT3SAS_ADAPTER *ioc, u16 smid)
{
unsigned long flags;
int i;
struct chain_tracker *chain_req, *next;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
if (smid < ioc->hi_priority_smid) {
/* scsiio queue */
i = smid - 1;
if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
list_for_each_entry_safe(chain_req, next,
&ioc->scsi_lookup[i].chain_list, tracker_list) {
list_del_init(&chain_req->tracker_list);
list_add(&chain_req->tracker_list,
&ioc->free_chain_list);
}
}
ioc->scsi_lookup[i].cb_idx = 0xFF;
ioc->scsi_lookup[i].scmd = NULL;
list_add(&ioc->scsi_lookup[i].tracker_list, &ioc->free_list);
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
/*
* See _wait_for_commands_to_complete() call with regards
* to this code.
*/
if (ioc->shost_recovery && ioc->pending_io_count) {
if (ioc->pending_io_count == 1)
wake_up(&ioc->reset_wq);
ioc->pending_io_count--;
}
return;
} else if (smid < ioc->internal_smid) {
/* hi-priority */
i = smid - ioc->hi_priority_smid;
ioc->hpr_lookup[i].cb_idx = 0xFF;
list_add(&ioc->hpr_lookup[i].tracker_list, &ioc->hpr_free_list);
} else if (smid <= ioc->hba_queue_depth) {
/* internal queue */
i = smid - ioc->internal_smid;
ioc->internal_lookup[i].cb_idx = 0xFF;
list_add(&ioc->internal_lookup[i].tracker_list,
&ioc->internal_free_list);
}
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
}
/**
* _base_writeq - 64 bit write to MMIO
* @ioc: per adapter object
* @b: data payload
* @addr: address in MMIO space
* @writeq_lock: spin lock
*
* Glue for handling an atomic 64 bit word to MMIO. This special handling takes
* care of 32 bit environment where its not quarenteed to send the entire word
* in one transfer.
*/
#if defined(writeq) && defined(CONFIG_64BIT)
static inline void
_base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock)
{
writeq(cpu_to_le64(b), addr);
}
#else
static inline void
_base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock)
{
unsigned long flags;
__u64 data_out = cpu_to_le64(b);
spin_lock_irqsave(writeq_lock, flags);
writel((u32)(data_out), addr);
writel((u32)(data_out >> 32), (addr + 4));
spin_unlock_irqrestore(writeq_lock, flags);
}
#endif
static inline u8
_base_get_msix_index(struct MPT3SAS_ADAPTER *ioc)
{
return ioc->cpu_msix_table[raw_smp_processor_id()];
}
/**
* mpt3sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
* @ioc: per adapter object
* @smid: system request message index
* @handle: device handle
*
* Return nothing.
*/
void
mpt3sas_base_put_smid_scsi_io(struct MPT3SAS_ADAPTER *ioc, u16 smid, u16 handle)
{
Mpi2RequestDescriptorUnion_t descriptor;
u64 *request = (u64 *)&descriptor;
descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
descriptor.SCSIIO.MSIxIndex = _base_get_msix_index(ioc);
descriptor.SCSIIO.SMID = cpu_to_le16(smid);
descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
descriptor.SCSIIO.LMID = 0;
_base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
&ioc->scsi_lookup_lock);
}
/**
* mpt3sas_base_put_smid_fast_path - send fast path request to firmware
* @ioc: per adapter object
* @smid: system request message index
* @handle: device handle
*
* Return nothing.
*/
void
mpt3sas_base_put_smid_fast_path(struct MPT3SAS_ADAPTER *ioc, u16 smid,
u16 handle)
{
Mpi2RequestDescriptorUnion_t descriptor;
u64 *request = (u64 *)&descriptor;
descriptor.SCSIIO.RequestFlags =
MPI25_REQ_DESCRIPT_FLAGS_FAST_PATH_SCSI_IO;
descriptor.SCSIIO.MSIxIndex = _base_get_msix_index(ioc);
descriptor.SCSIIO.SMID = cpu_to_le16(smid);
descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
descriptor.SCSIIO.LMID = 0;
_base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
&ioc->scsi_lookup_lock);
}
/**
* mpt3sas_base_put_smid_hi_priority - send Task Managment request to firmware
* @ioc: per adapter object
* @smid: system request message index
*
* Return nothing.
*/
void
mpt3sas_base_put_smid_hi_priority(struct MPT3SAS_ADAPTER *ioc, u16 smid)
{
Mpi2RequestDescriptorUnion_t descriptor;
u64 *request = (u64 *)&descriptor;
descriptor.HighPriority.RequestFlags =
MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
descriptor.HighPriority.MSIxIndex = 0;
descriptor.HighPriority.SMID = cpu_to_le16(smid);
descriptor.HighPriority.LMID = 0;
descriptor.HighPriority.Reserved1 = 0;
_base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
&ioc->scsi_lookup_lock);
}
/**
* mpt3sas_base_put_smid_default - Default, primarily used for config pages
* @ioc: per adapter object
* @smid: system request message index
*
* Return nothing.
*/
void
mpt3sas_base_put_smid_default(struct MPT3SAS_ADAPTER *ioc, u16 smid)
{
Mpi2RequestDescriptorUnion_t descriptor;
u64 *request = (u64 *)&descriptor;
descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
descriptor.Default.MSIxIndex = _base_get_msix_index(ioc);
descriptor.Default.SMID = cpu_to_le16(smid);
descriptor.Default.LMID = 0;
descriptor.Default.DescriptorTypeDependent = 0;
_base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
&ioc->scsi_lookup_lock);
}
/**
* _base_display_ioc_capabilities - Disply IOC's capabilities.
* @ioc: per adapter object
*
* Return nothing.
*/
static void
_base_display_ioc_capabilities(struct MPT3SAS_ADAPTER *ioc)
{
int i = 0;
char desc[16];
u32 iounit_pg1_flags;
u32 bios_version;
bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
strncpy(desc, ioc->manu_pg0.ChipName, 16);
pr_info(MPT3SAS_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "\
"ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
ioc->name, desc,
(ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
(ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
(ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
ioc->facts.FWVersion.Word & 0x000000FF,
ioc->pdev->revision,
(bios_version & 0xFF000000) >> 24,
(bios_version & 0x00FF0000) >> 16,
(bios_version & 0x0000FF00) >> 8,
bios_version & 0x000000FF);
pr_info(MPT3SAS_FMT "Protocol=(", ioc->name);
if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
pr_info("Initiator");
i++;
}
if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
pr_info("%sTarget", i ? "," : "");
i++;
}
i = 0;
pr_info("), ");
pr_info("Capabilities=(");
if (ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
pr_info("Raid");
i++;
}
if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
pr_info("%sTLR", i ? "," : "");
i++;
}
if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
pr_info("%sMulticast", i ? "," : "");
i++;
}
if (ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
pr_info("%sBIDI Target", i ? "," : "");
i++;
}
if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
pr_info("%sEEDP", i ? "," : "");
i++;
}
if (ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
pr_info("%sSnapshot Buffer", i ? "," : "");
i++;
}
if (ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
pr_info("%sDiag Trace Buffer", i ? "," : "");
i++;
}
if (ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
pr_info("%sDiag Extended Buffer", i ? "," : "");
i++;
}
if (ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
pr_info("%sTask Set Full", i ? "," : "");
i++;
}
iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
pr_info("%sNCQ", i ? "," : "");
i++;
}
pr_info(")\n");
}
/**
* mpt3sas_base_update_missing_delay - change the missing delay timers
* @ioc: per adapter object
* @device_missing_delay: amount of time till device is reported missing
* @io_missing_delay: interval IO is returned when there is a missing device
*
* Return nothing.
*
* Passed on the command line, this function will modify the device missing
* delay, as well as the io missing delay. This should be called at driver
* load time.
*/
void
mpt3sas_base_update_missing_delay(struct MPT3SAS_ADAPTER *ioc,
u16 device_missing_delay, u8 io_missing_delay)
{
u16 dmd, dmd_new, dmd_orignal;
u8 io_missing_delay_original;
u16 sz;
Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
Mpi2ConfigReply_t mpi_reply;
u8 num_phys = 0;
u16 ioc_status;
mpt3sas_config_get_number_hba_phys(ioc, &num_phys);
if (!num_phys)
return;
sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
sizeof(Mpi2SasIOUnit1PhyData_t));
sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
if (!sas_iounit_pg1) {
pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
if ((mpt3sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
sas_iounit_pg1, sz))) {
pr_err(MPT3SAS_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) {
pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
goto out;
}
/* device missing delay */
dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
else
dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
dmd_orignal = dmd;
if (device_missing_delay > 0x7F) {
dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
device_missing_delay;
dmd = dmd / 16;
dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
} else
dmd = device_missing_delay;
sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
/* io missing delay */
io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
if (!mpt3sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
sz)) {
if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
dmd_new = (dmd &
MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
else
dmd_new =
dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
pr_info(MPT3SAS_FMT "device_missing_delay: old(%d), new(%d)\n",
ioc->name, dmd_orignal, dmd_new);
pr_info(MPT3SAS_FMT "ioc_missing_delay: old(%d), new(%d)\n",
ioc->name, io_missing_delay_original,
io_missing_delay);
ioc->device_missing_delay = dmd_new;
ioc->io_missing_delay = io_missing_delay;
}
out:
kfree(sas_iounit_pg1);
}
/**
* _base_static_config_pages - static start of day config pages
* @ioc: per adapter object
*
* Return nothing.
*/
static void
_base_static_config_pages(struct MPT3SAS_ADAPTER *ioc)
{
Mpi2ConfigReply_t mpi_reply;
u32 iounit_pg1_flags;
mpt3sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
if (ioc->ir_firmware)
mpt3sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
&ioc->manu_pg10);
/*
* Ensure correct T10 PI operation if vendor left EEDPTagMode
* flag unset in NVDATA.
*/
mpt3sas_config_get_manufacturing_pg11(ioc, &mpi_reply, &ioc->manu_pg11);
if (ioc->manu_pg11.EEDPTagMode == 0) {
pr_err("%s: overriding NVDATA EEDPTagMode setting\n",
ioc->name);
ioc->manu_pg11.EEDPTagMode &= ~0x3;
ioc->manu_pg11.EEDPTagMode |= 0x1;
mpt3sas_config_set_manufacturing_pg11(ioc, &mpi_reply,
&ioc->manu_pg11);
}
mpt3sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
mpt3sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
mpt3sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
mpt3sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
mpt3sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
_base_display_ioc_capabilities(ioc);
/*
* Enable task_set_full handling in iounit_pg1 when the
* facts capabilities indicate that its supported.
*/
iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
if ((ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
iounit_pg1_flags &=
~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
else
iounit_pg1_flags |=
MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
mpt3sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
}
/**
* _base_release_memory_pools - release memory
* @ioc: per adapter object
*
* Free memory allocated from _base_allocate_memory_pools.
*
* Return nothing.
*/
static void
_base_release_memory_pools(struct MPT3SAS_ADAPTER *ioc)
{
int i;
dexitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
if (ioc->request) {
pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
ioc->request, ioc->request_dma);
dexitprintk(ioc, pr_info(MPT3SAS_FMT
"request_pool(0x%p): free\n",
ioc->name, ioc->request));
ioc->request = NULL;
}
if (ioc->sense) {
pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
if (ioc->sense_dma_pool)
pci_pool_destroy(ioc->sense_dma_pool);
dexitprintk(ioc, pr_info(MPT3SAS_FMT
"sense_pool(0x%p): free\n",
ioc->name, ioc->sense));
ioc->sense = NULL;
}
if (ioc->reply) {
pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
if (ioc->reply_dma_pool)
pci_pool_destroy(ioc->reply_dma_pool);
dexitprintk(ioc, pr_info(MPT3SAS_FMT
"reply_pool(0x%p): free\n",
ioc->name, ioc->reply));
ioc->reply = NULL;
}
if (ioc->reply_free) {
pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
ioc->reply_free_dma);
if (ioc->reply_free_dma_pool)
pci_pool_destroy(ioc->reply_free_dma_pool);
dexitprintk(ioc, pr_info(MPT3SAS_FMT
"reply_free_pool(0x%p): free\n",
ioc->name, ioc->reply_free));
ioc->reply_free = NULL;
}
if (ioc->reply_post_free) {
pci_pool_free(ioc->reply_post_free_dma_pool,
ioc->reply_post_free, ioc->reply_post_free_dma);
if (ioc->reply_post_free_dma_pool)
pci_pool_destroy(ioc->reply_post_free_dma_pool);
dexitprintk(ioc, pr_info(MPT3SAS_FMT
"reply_post_free_pool(0x%p): free\n", ioc->name,
ioc->reply_post_free));
ioc->reply_post_free = NULL;
}
if (ioc->config_page) {
dexitprintk(ioc, pr_info(MPT3SAS_FMT
"config_page(0x%p): free\n", ioc->name,
ioc->config_page));
pci_free_consistent(ioc->pdev, ioc->config_page_sz,
ioc->config_page, ioc->config_page_dma);
}
if (ioc->scsi_lookup) {
free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
ioc->scsi_lookup = NULL;
}
kfree(ioc->hpr_lookup);
kfree(ioc->internal_lookup);
if (ioc->chain_lookup) {
for (i = 0; i < ioc->chain_depth; i++) {
if (ioc->chain_lookup[i].chain_buffer)
pci_pool_free(ioc->chain_dma_pool,
ioc->chain_lookup[i].chain_buffer,
ioc->chain_lookup[i].chain_buffer_dma);
}
if (ioc->chain_dma_pool)
pci_pool_destroy(ioc->chain_dma_pool);
free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
ioc->chain_lookup = NULL;
}
}
/**
* _base_allocate_memory_pools - allocate start of day memory pools
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 success, anything else error
*/
static int
_base_allocate_memory_pools(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
{
struct mpt3sas_facts *facts;
u16 max_sge_elements;
u16 chains_needed_per_io;
u32 sz, total_sz, reply_post_free_sz;
u32 retry_sz;
u16 max_request_credit;
unsigned short sg_tablesize;
u16 sge_size;
int i;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
retry_sz = 0;
facts = &ioc->facts;
/* command line tunables for max sgl entries */
if (max_sgl_entries != -1)
sg_tablesize = max_sgl_entries;
else
sg_tablesize = MPT3SAS_SG_DEPTH;
if (sg_tablesize < MPT3SAS_MIN_PHYS_SEGMENTS)
sg_tablesize = MPT3SAS_MIN_PHYS_SEGMENTS;
else if (sg_tablesize > MPT3SAS_MAX_PHYS_SEGMENTS)
sg_tablesize = MPT3SAS_MAX_PHYS_SEGMENTS;
ioc->shost->sg_tablesize = sg_tablesize;
ioc->hi_priority_depth = facts->HighPriorityCredit;
ioc->internal_depth = ioc->hi_priority_depth + (5);
/* command line tunables for max controller queue depth */
if (max_queue_depth != -1 && max_queue_depth != 0) {
max_request_credit = min_t(u16, max_queue_depth +
ioc->hi_priority_depth + ioc->internal_depth,
facts->RequestCredit);
if (max_request_credit > MAX_HBA_QUEUE_DEPTH)
max_request_credit = MAX_HBA_QUEUE_DEPTH;
} else
max_request_credit = min_t(u16, facts->RequestCredit,
MAX_HBA_QUEUE_DEPTH);
ioc->hba_queue_depth = max_request_credit;
/* request frame size */
ioc->request_sz = facts->IOCRequestFrameSize * 4;
/* reply frame size */
ioc->reply_sz = facts->ReplyFrameSize * 4;
/* calculate the max scatter element size */
sge_size = max_t(u16, ioc->sge_size, ioc->sge_size_ieee);
retry_allocation:
total_sz = 0;
/* calculate number of sg elements left over in the 1st frame */
max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
sizeof(Mpi2SGEIOUnion_t)) + sge_size);
ioc->max_sges_in_main_message = max_sge_elements/sge_size;
/* now do the same for a chain buffer */
max_sge_elements = ioc->request_sz - sge_size;
ioc->max_sges_in_chain_message = max_sge_elements/sge_size;
/*
* MPT3SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
*/
chains_needed_per_io = ((ioc->shost->sg_tablesize -
ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
+ 1;
if (chains_needed_per_io > facts->MaxChainDepth) {
chains_needed_per_io = facts->MaxChainDepth;
ioc->shost->sg_tablesize = min_t(u16,
ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
* chains_needed_per_io), ioc->shost->sg_tablesize);
}
ioc->chains_needed_per_io = chains_needed_per_io;
/* reply free queue sizing - taking into account for 64 FW events */
ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
/* calculate reply descriptor post queue depth */
ioc->reply_post_queue_depth = ioc->hba_queue_depth +
ioc->reply_free_queue_depth + 1 ;
/* align the reply post queue on the next 16 count boundary */
if (ioc->reply_post_queue_depth % 16)
ioc->reply_post_queue_depth += 16 -
(ioc->reply_post_queue_depth % 16);
if (ioc->reply_post_queue_depth >
facts->MaxReplyDescriptorPostQueueDepth) {
ioc->reply_post_queue_depth =
facts->MaxReplyDescriptorPostQueueDepth -
(facts->MaxReplyDescriptorPostQueueDepth % 16);
ioc->hba_queue_depth =
((ioc->reply_post_queue_depth - 64) / 2) - 1;
ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
}
dinitprintk(ioc, pr_info(MPT3SAS_FMT "scatter gather: " \
"sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
"chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
ioc->chains_needed_per_io));
ioc->scsiio_depth = ioc->hba_queue_depth -
ioc->hi_priority_depth - ioc->internal_depth;
/* set the scsi host can_queue depth
* with some internal commands that could be outstanding
*/
ioc->shost->can_queue = ioc->scsiio_depth;
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"scsi host: can_queue depth (%d)\n",
ioc->name, ioc->shost->can_queue));
/* contiguous pool for request and chains, 16 byte align, one extra "
* "frame for smid=0
*/
ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
/* hi-priority queue */
sz += (ioc->hi_priority_depth * ioc->request_sz);
/* internal queue */
sz += (ioc->internal_depth * ioc->request_sz);
ioc->request_dma_sz = sz;
ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
if (!ioc->request) {
pr_err(MPT3SAS_FMT "request pool: pci_alloc_consistent " \
"failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
"total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
if (ioc->scsiio_depth < MPT3SAS_SAS_QUEUE_DEPTH)
goto out;
retry_sz += 64;
ioc->hba_queue_depth = max_request_credit - retry_sz;
goto retry_allocation;
}
if (retry_sz)
pr_err(MPT3SAS_FMT "request pool: pci_alloc_consistent " \
"succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
"total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
/* hi-priority queue */
ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
ioc->request_sz);
ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
ioc->request_sz);
/* internal queue */
ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
ioc->request_sz);
ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
ioc->request_sz);
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"request pool(0x%p): depth(%d), frame_size(%d), pool_size(%d kB)\n",
ioc->name, ioc->request, ioc->hba_queue_depth, ioc->request_sz,
(ioc->hba_queue_depth * ioc->request_sz)/1024));
dinitprintk(ioc, pr_info(MPT3SAS_FMT "request pool: dma(0x%llx)\n",
ioc->name, (unsigned long long) ioc->request_dma));
total_sz += sz;
sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
ioc->scsi_lookup_pages = get_order(sz);
ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
GFP_KERNEL, ioc->scsi_lookup_pages);
if (!ioc->scsi_lookup) {
pr_err(MPT3SAS_FMT "scsi_lookup: get_free_pages failed, sz(%d)\n",
ioc->name, (int)sz);
goto out;
}
dinitprintk(ioc, pr_info(MPT3SAS_FMT "scsiio(0x%p): depth(%d)\n",
ioc->name, ioc->request, ioc->scsiio_depth));
ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
sz = ioc->chain_depth * sizeof(struct chain_tracker);
ioc->chain_pages = get_order(sz);
ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
GFP_KERNEL, ioc->chain_pages);
if (!ioc->chain_lookup) {
pr_err(MPT3SAS_FMT "chain_lookup: __get_free_pages failed\n",
ioc->name);
goto out;
}
ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
ioc->request_sz, 16, 0);
if (!ioc->chain_dma_pool) {
pr_err(MPT3SAS_FMT "chain_dma_pool: pci_pool_create failed\n",
ioc->name);
goto out;
}
for (i = 0; i < ioc->chain_depth; i++) {
ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
ioc->chain_dma_pool , GFP_KERNEL,
&ioc->chain_lookup[i].chain_buffer_dma);
if (!ioc->chain_lookup[i].chain_buffer) {
ioc->chain_depth = i;
goto chain_done;
}
total_sz += ioc->request_sz;
}
chain_done:
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"chain pool depth(%d), frame_size(%d), pool_size(%d kB)\n",
ioc->name, ioc->chain_depth, ioc->request_sz,
((ioc->chain_depth * ioc->request_sz))/1024));
/* initialize hi-priority queue smid's */
ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
sizeof(struct request_tracker), GFP_KERNEL);
if (!ioc->hpr_lookup) {
pr_err(MPT3SAS_FMT "hpr_lookup: kcalloc failed\n",
ioc->name);
goto out;
}
ioc->hi_priority_smid = ioc->scsiio_depth + 1;
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"hi_priority(0x%p): depth(%d), start smid(%d)\n",
ioc->name, ioc->hi_priority,
ioc->hi_priority_depth, ioc->hi_priority_smid));
/* initialize internal queue smid's */
ioc->internal_lookup = kcalloc(ioc->internal_depth,
sizeof(struct request_tracker), GFP_KERNEL);
if (!ioc->internal_lookup) {
pr_err(MPT3SAS_FMT "internal_lookup: kcalloc failed\n",
ioc->name);
goto out;
}
ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"internal(0x%p): depth(%d), start smid(%d)\n",
ioc->name, ioc->internal,
ioc->internal_depth, ioc->internal_smid));
/* sense buffers, 4 byte align */
sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
0);
if (!ioc->sense_dma_pool) {
pr_err(MPT3SAS_FMT "sense pool: pci_pool_create failed\n",
ioc->name);
goto out;
}
ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
&ioc->sense_dma);
if (!ioc->sense) {
pr_err(MPT3SAS_FMT "sense pool: pci_pool_alloc failed\n",
ioc->name);
goto out;
}
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"sense pool(0x%p): depth(%d), element_size(%d), pool_size"
"(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
SCSI_SENSE_BUFFERSIZE, sz/1024));
dinitprintk(ioc, pr_info(MPT3SAS_FMT "sense_dma(0x%llx)\n",
ioc->name, (unsigned long long)ioc->sense_dma));
total_sz += sz;
/* reply pool, 4 byte align */
sz = ioc->reply_free_queue_depth * ioc->reply_sz;
ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
0);
if (!ioc->reply_dma_pool) {
pr_err(MPT3SAS_FMT "reply pool: pci_pool_create failed\n",
ioc->name);
goto out;
}
ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
&ioc->reply_dma);
if (!ioc->reply) {
pr_err(MPT3SAS_FMT "reply pool: pci_pool_alloc failed\n",
ioc->name);
goto out;
}
ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"reply pool(0x%p): depth(%d), frame_size(%d), pool_size(%d kB)\n",
ioc->name, ioc->reply,
ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
dinitprintk(ioc, pr_info(MPT3SAS_FMT "reply_dma(0x%llx)\n",
ioc->name, (unsigned long long)ioc->reply_dma));
total_sz += sz;
/* reply free queue, 16 byte align */
sz = ioc->reply_free_queue_depth * 4;
ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
ioc->pdev, sz, 16, 0);
if (!ioc->reply_free_dma_pool) {
pr_err(MPT3SAS_FMT "reply_free pool: pci_pool_create failed\n",
ioc->name);
goto out;
}
ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
&ioc->reply_free_dma);
if (!ioc->reply_free) {
pr_err(MPT3SAS_FMT "reply_free pool: pci_pool_alloc failed\n",
ioc->name);
goto out;
}
memset(ioc->reply_free, 0, sz);
dinitprintk(ioc, pr_info(MPT3SAS_FMT "reply_free pool(0x%p): " \
"depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"reply_free_dma (0x%llx)\n",
ioc->name, (unsigned long long)ioc->reply_free_dma));
total_sz += sz;
/* reply post queue, 16 byte align */
reply_post_free_sz = ioc->reply_post_queue_depth *
sizeof(Mpi2DefaultReplyDescriptor_t);
if (_base_is_controller_msix_enabled(ioc))
sz = reply_post_free_sz * ioc->reply_queue_count;
else
sz = reply_post_free_sz;
ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
ioc->pdev, sz, 16, 0);
if (!ioc->reply_post_free_dma_pool) {
pr_err(MPT3SAS_FMT
"reply_post_free pool: pci_pool_create failed\n",
ioc->name);
goto out;
}
ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
GFP_KERNEL, &ioc->reply_post_free_dma);
if (!ioc->reply_post_free) {
pr_err(MPT3SAS_FMT
"reply_post_free pool: pci_pool_alloc failed\n",
ioc->name);
goto out;
}
memset(ioc->reply_post_free, 0, sz);
dinitprintk(ioc, pr_info(MPT3SAS_FMT "reply post free pool" \
"(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
sz/1024));
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"reply_post_free_dma = (0x%llx)\n",
ioc->name, (unsigned long long)
ioc->reply_post_free_dma));
total_sz += sz;
ioc->config_page_sz = 512;
ioc->config_page = pci_alloc_consistent(ioc->pdev,
ioc->config_page_sz, &ioc->config_page_dma);
if (!ioc->config_page) {
pr_err(MPT3SAS_FMT
"config page: pci_pool_alloc failed\n",
ioc->name);
goto out;
}
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"config page(0x%p): size(%d)\n",
ioc->name, ioc->config_page, ioc->config_page_sz));
dinitprintk(ioc, pr_info(MPT3SAS_FMT "config_page_dma(0x%llx)\n",
ioc->name, (unsigned long long)ioc->config_page_dma));
total_sz += ioc->config_page_sz;
pr_info(MPT3SAS_FMT "Allocated physical memory: size(%d kB)\n",
ioc->name, total_sz/1024);
pr_info(MPT3SAS_FMT
"Current Controller Queue Depth(%d),Max Controller Queue Depth(%d)\n",
ioc->name, ioc->shost->can_queue, facts->RequestCredit);
pr_info(MPT3SAS_FMT "Scatter Gather Elements per IO(%d)\n",
ioc->name, ioc->shost->sg_tablesize);
return 0;
out:
return -ENOMEM;
}
/**
* mpt3sas_base_get_iocstate - Get the current state of a MPT adapter.
* @ioc: Pointer to MPT_ADAPTER structure
* @cooked: Request raw or cooked IOC state
*
* Returns all IOC Doorbell register bits if cooked==0, else just the
* Doorbell bits in MPI_IOC_STATE_MASK.
*/
u32
mpt3sas_base_get_iocstate(struct MPT3SAS_ADAPTER *ioc, int cooked)
{
u32 s, sc;
s = readl(&ioc->chip->Doorbell);
sc = s & MPI2_IOC_STATE_MASK;
return cooked ? sc : s;
}
/**
* _base_wait_on_iocstate - waiting on a particular ioc state
* @ioc_state: controller state { READY, OPERATIONAL, or RESET }
* @timeout: timeout in second
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_wait_on_iocstate(struct MPT3SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
int sleep_flag)
{
u32 count, cntdn;
u32 current_state;
count = 0;
cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
do {
current_state = mpt3sas_base_get_iocstate(ioc, 1);
if (current_state == ioc_state)
return 0;
if (count && current_state == MPI2_IOC_STATE_FAULT)
break;
if (sleep_flag == CAN_SLEEP)
usleep_range(1000, 1500);
else
udelay(500);
count++;
} while (--cntdn);
return current_state;
}
/**
* _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
* a write to the doorbell)
* @ioc: per adapter object
* @timeout: timeout in second
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*
* Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
*/
static int
_base_wait_for_doorbell_int(struct MPT3SAS_ADAPTER *ioc, int timeout,
int sleep_flag)
{
u32 cntdn, count;
u32 int_status;
count = 0;
cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
do {
int_status = readl(&ioc->chip->HostInterruptStatus);
if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
dhsprintk(ioc, pr_info(MPT3SAS_FMT
"%s: successful count(%d), timeout(%d)\n",
ioc->name, __func__, count, timeout));
return 0;
}
if (sleep_flag == CAN_SLEEP)
usleep_range(1000, 1500);
else
udelay(500);
count++;
} while (--cntdn);
pr_err(MPT3SAS_FMT
"%s: failed due to timeout count(%d), int_status(%x)!\n",
ioc->name, __func__, count, int_status);
return -EFAULT;
}
/**
* _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
* @ioc: per adapter object
* @timeout: timeout in second
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*
* Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
* doorbell.
*/
static int
_base_wait_for_doorbell_ack(struct MPT3SAS_ADAPTER *ioc, int timeout,
int sleep_flag)
{
u32 cntdn, count;
u32 int_status;
u32 doorbell;
count = 0;
cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
do {
int_status = readl(&ioc->chip->HostInterruptStatus);
if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
dhsprintk(ioc, pr_info(MPT3SAS_FMT
"%s: successful count(%d), timeout(%d)\n",
ioc->name, __func__, count, timeout));
return 0;
} else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
doorbell = readl(&ioc->chip->Doorbell);
if ((doorbell & MPI2_IOC_STATE_MASK) ==
MPI2_IOC_STATE_FAULT) {
mpt3sas_base_fault_info(ioc , doorbell);
return -EFAULT;
}
} else if (int_status == 0xFFFFFFFF)
goto out;
if (sleep_flag == CAN_SLEEP)
usleep_range(1000, 1500);
else
udelay(500);
count++;
} while (--cntdn);
out:
pr_err(MPT3SAS_FMT
"%s: failed due to timeout count(%d), int_status(%x)!\n",
ioc->name, __func__, count, int_status);
return -EFAULT;
}
/**
* _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
* @ioc: per adapter object
* @timeout: timeout in second
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*
*/
static int
_base_wait_for_doorbell_not_used(struct MPT3SAS_ADAPTER *ioc, int timeout,
int sleep_flag)
{
u32 cntdn, count;
u32 doorbell_reg;
count = 0;
cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
do {
doorbell_reg = readl(&ioc->chip->Doorbell);
if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
dhsprintk(ioc, pr_info(MPT3SAS_FMT
"%s: successful count(%d), timeout(%d)\n",
ioc->name, __func__, count, timeout));
return 0;
}
if (sleep_flag == CAN_SLEEP)
usleep_range(1000, 1500);
else
udelay(500);
count++;
} while (--cntdn);
pr_err(MPT3SAS_FMT
"%s: failed due to timeout count(%d), doorbell_reg(%x)!\n",
ioc->name, __func__, count, doorbell_reg);
return -EFAULT;
}
/**
* _base_send_ioc_reset - send doorbell reset
* @ioc: per adapter object
* @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
* @timeout: timeout in second
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_send_ioc_reset(struct MPT3SAS_ADAPTER *ioc, u8 reset_type, int timeout,
int sleep_flag)
{
u32 ioc_state;
int r = 0;
if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
pr_err(MPT3SAS_FMT "%s: unknown reset_type\n",
ioc->name, __func__);
return -EFAULT;
}
if (!(ioc->facts.IOCCapabilities &
MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
return -EFAULT;
pr_info(MPT3SAS_FMT "sending message unit reset !!\n", ioc->name);
writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
&ioc->chip->Doorbell);
if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
r = -EFAULT;
goto out;
}
ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
timeout, sleep_flag);
if (ioc_state) {
pr_err(MPT3SAS_FMT
"%s: failed going to ready state (ioc_state=0x%x)\n",
ioc->name, __func__, ioc_state);
r = -EFAULT;
goto out;
}
out:
pr_info(MPT3SAS_FMT "message unit reset: %s\n",
ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
return r;
}
/**
* _base_handshake_req_reply_wait - send request thru doorbell interface
* @ioc: per adapter object
* @request_bytes: request length
* @request: pointer having request payload
* @reply_bytes: reply length
* @reply: pointer to reply payload
* @timeout: timeout in second
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_handshake_req_reply_wait(struct MPT3SAS_ADAPTER *ioc, int request_bytes,
u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
{
MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
int i;
u8 failed;
u16 dummy;
__le32 *mfp;
/* make sure doorbell is not in use */
if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
pr_err(MPT3SAS_FMT
"doorbell is in use (line=%d)\n",
ioc->name, __LINE__);
return -EFAULT;
}
/* clear pending doorbell interrupts from previous state changes */
if (readl(&ioc->chip->HostInterruptStatus) &
MPI2_HIS_IOC2SYS_DB_STATUS)
writel(0, &ioc->chip->HostInterruptStatus);
/* send message to ioc */
writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
&ioc->chip->Doorbell);
if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
pr_err(MPT3SAS_FMT
"doorbell handshake int failed (line=%d)\n",
ioc->name, __LINE__);
return -EFAULT;
}
writel(0, &ioc->chip->HostInterruptStatus);
if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
pr_err(MPT3SAS_FMT
"doorbell handshake ack failed (line=%d)\n",
ioc->name, __LINE__);
return -EFAULT;
}
/* send message 32-bits at a time */
for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
failed = 1;
}
if (failed) {
pr_err(MPT3SAS_FMT
"doorbell handshake sending request failed (line=%d)\n",
ioc->name, __LINE__);
return -EFAULT;
}
/* now wait for the reply */
if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
pr_err(MPT3SAS_FMT
"doorbell handshake int failed (line=%d)\n",
ioc->name, __LINE__);
return -EFAULT;
}
/* read the first two 16-bits, it gives the total length of the reply */
reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
& MPI2_DOORBELL_DATA_MASK);
writel(0, &ioc->chip->HostInterruptStatus);
if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
pr_err(MPT3SAS_FMT
"doorbell handshake int failed (line=%d)\n",
ioc->name, __LINE__);
return -EFAULT;
}
reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
& MPI2_DOORBELL_DATA_MASK);
writel(0, &ioc->chip->HostInterruptStatus);
for (i = 2; i < default_reply->MsgLength * 2; i++) {
if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
pr_err(MPT3SAS_FMT
"doorbell handshake int failed (line=%d)\n",
ioc->name, __LINE__);
return -EFAULT;
}
if (i >= reply_bytes/2) /* overflow case */
dummy = readl(&ioc->chip->Doorbell);
else
reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
& MPI2_DOORBELL_DATA_MASK);
writel(0, &ioc->chip->HostInterruptStatus);
}
_base_wait_for_doorbell_int(ioc, 5, sleep_flag);
if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
dhsprintk(ioc, pr_info(MPT3SAS_FMT
"doorbell is in use (line=%d)\n", ioc->name, __LINE__));
}
writel(0, &ioc->chip->HostInterruptStatus);
if (ioc->logging_level & MPT_DEBUG_INIT) {
mfp = (__le32 *)reply;
pr_info("\toffset:data\n");
for (i = 0; i < reply_bytes/4; i++)
pr_info("\t[0x%02x]:%08x\n", i*4,
le32_to_cpu(mfp[i]));
}
return 0;
}
/**
* mpt3sas_base_sas_iounit_control - send sas iounit control to FW
* @ioc: per adapter object
* @mpi_reply: the reply payload from FW
* @mpi_request: the request payload sent to FW
*
* The SAS IO Unit Control Request message allows the host to perform low-level
* operations, such as resets on the PHYs of the IO Unit, also allows the host
* to obtain the IOC assigned device handles for a device if it has other
* identifying information about the device, in addition allows the host to
* remove IOC resources associated with the device.
*
* Returns 0 for success, non-zero for failure.
*/
int
mpt3sas_base_sas_iounit_control(struct MPT3SAS_ADAPTER *ioc,
Mpi2SasIoUnitControlReply_t *mpi_reply,
Mpi2SasIoUnitControlRequest_t *mpi_request)
{
u16 smid;
u32 ioc_state;
unsigned long timeleft;
u8 issue_reset;
int rc;
void *request;
u16 wait_state_count;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
mutex_lock(&ioc->base_cmds.mutex);
if (ioc->base_cmds.status != MPT3_CMD_NOT_USED) {
pr_err(MPT3SAS_FMT "%s: base_cmd in use\n",
ioc->name, __func__);
rc = -EAGAIN;
goto out;
}
wait_state_count = 0;
ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
if (wait_state_count++ == 10) {
pr_err(MPT3SAS_FMT
"%s: failed due to ioc not operational\n",
ioc->name, __func__);
rc = -EFAULT;
goto out;
}
ssleep(1);
ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
pr_info(MPT3SAS_FMT
"%s: waiting for operational state(count=%d)\n",
ioc->name, __func__, wait_state_count);
}
smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx);
if (!smid) {
pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
rc = -EAGAIN;
goto out;
}
rc = 0;
ioc->base_cmds.status = MPT3_CMD_PENDING;
request = mpt3sas_base_get_msg_frame(ioc, smid);
ioc->base_cmds.smid = smid;
memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
ioc->ioc_link_reset_in_progress = 1;
init_completion(&ioc->base_cmds.done);
mpt3sas_base_put_smid_default(ioc, smid);
timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
msecs_to_jiffies(10000));
if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
ioc->ioc_link_reset_in_progress)
ioc->ioc_link_reset_in_progress = 0;
if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) {
pr_err(MPT3SAS_FMT "%s: timeout\n",
ioc->name, __func__);
_debug_dump_mf(mpi_request,
sizeof(Mpi2SasIoUnitControlRequest_t)/4);
if (!(ioc->base_cmds.status & MPT3_CMD_RESET))
issue_reset = 1;
goto issue_host_reset;
}
if (ioc->base_cmds.status & MPT3_CMD_REPLY_VALID)
memcpy(mpi_reply, ioc->base_cmds.reply,
sizeof(Mpi2SasIoUnitControlReply_t));
else
memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
ioc->base_cmds.status = MPT3_CMD_NOT_USED;
goto out;
issue_host_reset:
if (issue_reset)
mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
ioc->base_cmds.status = MPT3_CMD_NOT_USED;
rc = -EFAULT;
out:
mutex_unlock(&ioc->base_cmds.mutex);
return rc;
}
/**
* mpt3sas_base_scsi_enclosure_processor - sending request to sep device
* @ioc: per adapter object
* @mpi_reply: the reply payload from FW
* @mpi_request: the request payload sent to FW
*
* The SCSI Enclosure Processor request message causes the IOC to
* communicate with SES devices to control LED status signals.
*
* Returns 0 for success, non-zero for failure.
*/
int
mpt3sas_base_scsi_enclosure_processor(struct MPT3SAS_ADAPTER *ioc,
Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
{
u16 smid;
u32 ioc_state;
unsigned long timeleft;
u8 issue_reset;
int rc;
void *request;
u16 wait_state_count;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
mutex_lock(&ioc->base_cmds.mutex);
if (ioc->base_cmds.status != MPT3_CMD_NOT_USED) {
pr_err(MPT3SAS_FMT "%s: base_cmd in use\n",
ioc->name, __func__);
rc = -EAGAIN;
goto out;
}
wait_state_count = 0;
ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
if (wait_state_count++ == 10) {
pr_err(MPT3SAS_FMT
"%s: failed due to ioc not operational\n",
ioc->name, __func__);
rc = -EFAULT;
goto out;
}
ssleep(1);
ioc_state = mpt3sas_base_get_iocstate(ioc, 1);
pr_info(MPT3SAS_FMT
"%s: waiting for operational state(count=%d)\n",
ioc->name,
__func__, wait_state_count);
}
smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx);
if (!smid) {
pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
rc = -EAGAIN;
goto out;
}
rc = 0;
ioc->base_cmds.status = MPT3_CMD_PENDING;
request = mpt3sas_base_get_msg_frame(ioc, smid);
ioc->base_cmds.smid = smid;
memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
init_completion(&ioc->base_cmds.done);
mpt3sas_base_put_smid_default(ioc, smid);
timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
msecs_to_jiffies(10000));
if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) {
pr_err(MPT3SAS_FMT "%s: timeout\n",
ioc->name, __func__);
_debug_dump_mf(mpi_request,
sizeof(Mpi2SepRequest_t)/4);
if (!(ioc->base_cmds.status & MPT3_CMD_RESET))
issue_reset = 1;
goto issue_host_reset;
}
if (ioc->base_cmds.status & MPT3_CMD_REPLY_VALID)
memcpy(mpi_reply, ioc->base_cmds.reply,
sizeof(Mpi2SepReply_t));
else
memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
ioc->base_cmds.status = MPT3_CMD_NOT_USED;
goto out;
issue_host_reset:
if (issue_reset)
mpt3sas_base_hard_reset_handler(ioc, CAN_SLEEP,
FORCE_BIG_HAMMER);
ioc->base_cmds.status = MPT3_CMD_NOT_USED;
rc = -EFAULT;
out:
mutex_unlock(&ioc->base_cmds.mutex);
return rc;
}
/**
* _base_get_port_facts - obtain port facts reply and save in ioc
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_get_port_facts(struct MPT3SAS_ADAPTER *ioc, int port, int sleep_flag)
{
Mpi2PortFactsRequest_t mpi_request;
Mpi2PortFactsReply_t mpi_reply;
struct mpt3sas_port_facts *pfacts;
int mpi_reply_sz, mpi_request_sz, r;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
memset(&mpi_request, 0, mpi_request_sz);
mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
mpi_request.PortNumber = port;
r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
(u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
if (r != 0) {
pr_err(MPT3SAS_FMT "%s: handshake failed (r=%d)\n",
ioc->name, __func__, r);
return r;
}
pfacts = &ioc->pfacts[port];
memset(pfacts, 0, sizeof(struct mpt3sas_port_facts));
pfacts->PortNumber = mpi_reply.PortNumber;
pfacts->VP_ID = mpi_reply.VP_ID;
pfacts->VF_ID = mpi_reply.VF_ID;
pfacts->MaxPostedCmdBuffers =
le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
return 0;
}
/**
* _base_get_ioc_facts - obtain ioc facts reply and save in ioc
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_get_ioc_facts(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
{
Mpi2IOCFactsRequest_t mpi_request;
Mpi2IOCFactsReply_t mpi_reply;
struct mpt3sas_facts *facts;
int mpi_reply_sz, mpi_request_sz, r;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
memset(&mpi_request, 0, mpi_request_sz);
mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
(u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
if (r != 0) {
pr_err(MPT3SAS_FMT "%s: handshake failed (r=%d)\n",
ioc->name, __func__, r);
return r;
}
facts = &ioc->facts;
memset(facts, 0, sizeof(struct mpt3sas_facts));
facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
facts->VP_ID = mpi_reply.VP_ID;
facts->VF_ID = mpi_reply.VF_ID;
facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
facts->MaxChainDepth = mpi_reply.MaxChainDepth;
facts->WhoInit = mpi_reply.WhoInit;
facts->NumberOfPorts = mpi_reply.NumberOfPorts;
facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
facts->MaxReplyDescriptorPostQueueDepth =
le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
ioc->ir_firmware = 1;
facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
facts->IOCRequestFrameSize =
le16_to_cpu(mpi_reply.IOCRequestFrameSize);
facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
ioc->shost->max_id = -1;
facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
facts->HighPriorityCredit =
le16_to_cpu(mpi_reply.HighPriorityCredit);
facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"hba queue depth(%d), max chains per io(%d)\n",
ioc->name, facts->RequestCredit,
facts->MaxChainDepth));
dinitprintk(ioc, pr_info(MPT3SAS_FMT
"request frame size(%d), reply frame size(%d)\n", ioc->name,
facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
return 0;
}
/**
* _base_send_ioc_init - send ioc_init to firmware
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_send_ioc_init(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
{
Mpi2IOCInitRequest_t mpi_request;
Mpi2IOCInitReply_t mpi_reply;
int r;
struct timeval current_time;
u16 ioc_status;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
mpi_request.VF_ID = 0; /* TODO */
mpi_request.VP_ID = 0;
mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
if (_base_is_controller_msix_enabled(ioc))
mpi_request.HostMSIxVectors = ioc->reply_queue_count;
mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
mpi_request.ReplyDescriptorPostQueueDepth =
cpu_to_le16(ioc->reply_post_queue_depth);
mpi_request.ReplyFreeQueueDepth =
cpu_to_le16(ioc->reply_free_queue_depth);
mpi_request.SenseBufferAddressHigh =
cpu_to_le32((u64)ioc->sense_dma >> 32);
mpi_request.SystemReplyAddressHigh =
cpu_to_le32((u64)ioc->reply_dma >> 32);
mpi_request.SystemRequestFrameBaseAddress =
cpu_to_le64((u64)ioc->request_dma);
mpi_request.ReplyFreeQueueAddress =
cpu_to_le64((u64)ioc->reply_free_dma);
mpi_request.ReplyDescriptorPostQueueAddress =
cpu_to_le64((u64)ioc->reply_post_free_dma);
/* This time stamp specifies number of milliseconds
* since epoch ~ midnight January 1, 1970.
*/
do_gettimeofday(&current_time);
mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
(current_time.tv_usec / 1000));
if (ioc->logging_level & MPT_DEBUG_INIT) {
__le32 *mfp;
int i;
mfp = (__le32 *)&mpi_request;
pr_info("\toffset:data\n");
for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
pr_info("\t[0x%02x]:%08x\n", i*4,
le32_to_cpu(mfp[i]));
}
r = _base_handshake_req_reply_wait(ioc,
sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
sleep_flag);
if (r != 0) {
pr_err(MPT3SAS_FMT "%s: handshake failed (r=%d)\n",
ioc->name, __func__, r);
return r;
}
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
mpi_reply.IOCLogInfo) {
pr_err(MPT3SAS_FMT "%s: failed\n", ioc->name, __func__);
r = -EIO;
}
return 0;
}
/**
* mpt3sas_port_enable_done - command completion routine for port enable
* @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)
*
* Return 1 meaning mf should be freed from _base_interrupt
* 0 means the mf is freed from this function.
*/
u8
mpt3sas_port_enable_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
u32 reply)
{
MPI2DefaultReply_t *mpi_reply;
u16 ioc_status;
if (ioc->port_enable_cmds.status == MPT3_CMD_NOT_USED)
return 1;
mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
if (!mpi_reply)
return 1;
if (mpi_reply->Function != MPI2_FUNCTION_PORT_ENABLE)
return 1;
ioc->port_enable_cmds.status &= ~MPT3_CMD_PENDING;
ioc->port_enable_cmds.status |= MPT3_CMD_COMPLETE;
ioc->port_enable_cmds.status |= MPT3_CMD_REPLY_VALID;
memcpy(ioc->port_enable_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
ioc->port_enable_failed = 1;
if (ioc->is_driver_loading) {
if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
mpt3sas_port_enable_complete(ioc);
return 1;
} else {
ioc->start_scan_failed = ioc_status;
ioc->start_scan = 0;
return 1;
}
}
complete(&ioc->port_enable_cmds.done);
return 1;
}
/**
* _base_send_port_enable - send port_enable(discovery stuff) to firmware
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_send_port_enable(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
{
Mpi2PortEnableRequest_t *mpi_request;
Mpi2PortEnableReply_t *mpi_reply;
unsigned long timeleft;
int r = 0;
u16 smid;
u16 ioc_status;
pr_info(MPT3SAS_FMT "sending port enable !!\n", ioc->name);
if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) {
pr_err(MPT3SAS_FMT "%s: internal command already in use\n",
ioc->name, __func__);
return -EAGAIN;
}
smid = mpt3sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
if (!smid) {
pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
return -EAGAIN;
}
ioc->port_enable_cmds.status = MPT3_CMD_PENDING;
mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
ioc->port_enable_cmds.smid = smid;
memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
init_completion(&ioc->port_enable_cmds.done);
mpt3sas_base_put_smid_default(ioc, smid);
timeleft = wait_for_completion_timeout(&ioc->port_enable_cmds.done,
300*HZ);
if (!(ioc->port_enable_cmds.status & MPT3_CMD_COMPLETE)) {
pr_err(MPT3SAS_FMT "%s: timeout\n",
ioc->name, __func__);
_debug_dump_mf(mpi_request,
sizeof(Mpi2PortEnableRequest_t)/4);
if (ioc->port_enable_cmds.status & MPT3_CMD_RESET)
r = -EFAULT;
else
r = -ETIME;
goto out;
}
mpi_reply = ioc->port_enable_cmds.reply;
ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
pr_err(MPT3SAS_FMT "%s: failed with (ioc_status=0x%08x)\n",
ioc->name, __func__, ioc_status);
r = -EFAULT;
goto out;
}
out:
ioc->port_enable_cmds.status = MPT3_CMD_NOT_USED;
pr_info(MPT3SAS_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
"SUCCESS" : "FAILED"));
return r;
}
/**
* mpt3sas_port_enable - initiate firmware discovery (don't wait for reply)
* @ioc: per adapter object
*
* Returns 0 for success, non-zero for failure.
*/
int
mpt3sas_port_enable(struct MPT3SAS_ADAPTER *ioc)
{
Mpi2PortEnableRequest_t *mpi_request;
u16 smid;
pr_info(MPT3SAS_FMT "sending port enable !!\n", ioc->name);
if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) {
pr_err(MPT3SAS_FMT "%s: internal command already in use\n",
ioc->name, __func__);
return -EAGAIN;
}
smid = mpt3sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
if (!smid) {
pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
return -EAGAIN;
}
ioc->port_enable_cmds.status = MPT3_CMD_PENDING;
mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
ioc->port_enable_cmds.smid = smid;
memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
mpt3sas_base_put_smid_default(ioc, smid);
return 0;
}
/**
* _base_determine_wait_on_discovery - desposition
* @ioc: per adapter object
*
* Decide whether to wait on discovery to complete. Used to either
* locate boot device, or report volumes ahead of physical devices.
*
* Returns 1 for wait, 0 for don't wait
*/
static int
_base_determine_wait_on_discovery(struct MPT3SAS_ADAPTER *ioc)
{
/* We wait for discovery to complete if IR firmware is loaded.
* The sas topology events arrive before PD events, so we need time to
* turn on the bit in ioc->pd_handles to indicate PD
* Also, it maybe required to report Volumes ahead of physical
* devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
*/
if (ioc->ir_firmware)
return 1;
/* if no Bios, then we don't need to wait */
if (!ioc->bios_pg3.BiosVersion)
return 0;
/* Bios is present, then we drop down here.
*
* If there any entries in the Bios Page 2, then we wait
* for discovery to complete.
*/
/* Current Boot Device */
if ((ioc->bios_pg2.CurrentBootDeviceForm &
MPI2_BIOSPAGE2_FORM_MASK) ==
MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
/* Request Boot Device */
(ioc->bios_pg2.ReqBootDeviceForm &
MPI2_BIOSPAGE2_FORM_MASK) ==
MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
/* Alternate Request Boot Device */
(ioc->bios_pg2.ReqAltBootDeviceForm &
MPI2_BIOSPAGE2_FORM_MASK) ==
MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
return 0;
return 1;
}
/**
* _base_unmask_events - turn on notification for this event
* @ioc: per adapter object
* @event: firmware event
*
* The mask is stored in ioc->event_masks.
*/
static void
_base_unmask_events(struct MPT3SAS_ADAPTER *ioc, u16 event)
{
u32 desired_event;
if (event >= 128)
return;
desired_event = (1 << (event % 32));
if (event < 32)
ioc->event_masks[0] &= ~desired_event;
else if (event < 64)
ioc->event_masks[1] &= ~desired_event;
else if (event < 96)
ioc->event_masks[2] &= ~desired_event;
else if (event < 128)
ioc->event_masks[3] &= ~desired_event;
}
/**
* _base_event_notification - send event notification
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_event_notification(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
{
Mpi2EventNotificationRequest_t *mpi_request;
unsigned long timeleft;
u16 smid;
int r = 0;
int i;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
if (ioc->base_cmds.status & MPT3_CMD_PENDING) {
pr_err(MPT3SAS_FMT "%s: internal command already in use\n",
ioc->name, __func__);
return -EAGAIN;
}
smid = mpt3sas_base_get_smid(ioc, ioc->base_cb_idx);
if (!smid) {
pr_err(MPT3SAS_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
return -EAGAIN;
}
ioc->base_cmds.status = MPT3_CMD_PENDING;
mpi_request = mpt3sas_base_get_msg_frame(ioc, smid);
ioc->base_cmds.smid = smid;
memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
mpi_request->VF_ID = 0; /* TODO */
mpi_request->VP_ID = 0;
for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
mpi_request->EventMasks[i] =
cpu_to_le32(ioc->event_masks[i]);
init_completion(&ioc->base_cmds.done);
mpt3sas_base_put_smid_default(ioc, smid);
timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
if (!(ioc->base_cmds.status & MPT3_CMD_COMPLETE)) {
pr_err(MPT3SAS_FMT "%s: timeout\n",
ioc->name, __func__);
_debug_dump_mf(mpi_request,
sizeof(Mpi2EventNotificationRequest_t)/4);
if (ioc->base_cmds.status & MPT3_CMD_RESET)
r = -EFAULT;
else
r = -ETIME;
} else
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s: complete\n",
ioc->name, __func__));
ioc->base_cmds.status = MPT3_CMD_NOT_USED;
return r;
}
/**
* mpt3sas_base_validate_event_type - validating event types
* @ioc: per adapter object
* @event: firmware event
*
* This will turn on firmware event notification when application
* ask for that event. We don't mask events that are already enabled.
*/
void
mpt3sas_base_validate_event_type(struct MPT3SAS_ADAPTER *ioc, u32 *event_type)
{
int i, j;
u32 event_mask, desired_event;
u8 send_update_to_fw;
for (i = 0, send_update_to_fw = 0; i <
MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
event_mask = ~event_type[i];
desired_event = 1;
for (j = 0; j < 32; j++) {
if (!(event_mask & desired_event) &&
(ioc->event_masks[i] & desired_event)) {
ioc->event_masks[i] &= ~desired_event;
send_update_to_fw = 1;
}
desired_event = (desired_event << 1);
}
}
if (!send_update_to_fw)
return;
mutex_lock(&ioc->base_cmds.mutex);
_base_event_notification(ioc, CAN_SLEEP);
mutex_unlock(&ioc->base_cmds.mutex);
}
/**
* _base_diag_reset - the "big hammer" start of day reset
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_diag_reset(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
{
u32 host_diagnostic;
u32 ioc_state;
u32 count;
u32 hcb_size;
pr_info(MPT3SAS_FMT "sending diag reset !!\n", ioc->name);
drsprintk(ioc, pr_info(MPT3SAS_FMT "clear interrupts\n",
ioc->name));
count = 0;
do {
/* Write magic sequence to WriteSequence register
* Loop until in diagnostic mode
*/
drsprintk(ioc, pr_info(MPT3SAS_FMT
"write magic sequence\n", ioc->name));
writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
/* wait 100 msec */
if (sleep_flag == CAN_SLEEP)
msleep(100);
else
mdelay(100);
if (count++ > 20)
goto out;
host_diagnostic = readl(&ioc->chip->HostDiagnostic);
drsprintk(ioc, pr_info(MPT3SAS_FMT
"wrote magic sequence: count(%d), host_diagnostic(0x%08x)\n",
ioc->name, count, host_diagnostic));
} while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
hcb_size = readl(&ioc->chip->HCBSize);
drsprintk(ioc, pr_info(MPT3SAS_FMT "diag reset: issued\n",
ioc->name));
writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
&ioc->chip->HostDiagnostic);
/* don't access any registers for 50 milliseconds */
msleep(50);
/* 300 second max wait */
for (count = 0; count < 3000000 ; count++) {
host_diagnostic = readl(&ioc->chip->HostDiagnostic);
if (host_diagnostic == 0xFFFFFFFF)
goto out;
if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
break;
/* wait 1 msec */
if (sleep_flag == CAN_SLEEP)
usleep_range(1000, 1500);
else
mdelay(1);
}
if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
drsprintk(ioc, pr_info(MPT3SAS_FMT
"restart the adapter assuming the HCB Address points to good F/W\n",
ioc->name));
host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
writel(host_diagnostic, &ioc->chip->HostDiagnostic);
drsprintk(ioc, pr_info(MPT3SAS_FMT
"re-enable the HCDW\n", ioc->name));
writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
&ioc->chip->HCBSize);
}
drsprintk(ioc, pr_info(MPT3SAS_FMT "restart the adapter\n",
ioc->name));
writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
&ioc->chip->HostDiagnostic);
drsprintk(ioc, pr_info(MPT3SAS_FMT
"disable writes to the diagnostic register\n", ioc->name));
writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
drsprintk(ioc, pr_info(MPT3SAS_FMT
"Wait for FW to go to the READY state\n", ioc->name));
ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
sleep_flag);
if (ioc_state) {
pr_err(MPT3SAS_FMT
"%s: failed going to ready state (ioc_state=0x%x)\n",
ioc->name, __func__, ioc_state);
goto out;
}
pr_info(MPT3SAS_FMT "diag reset: SUCCESS\n", ioc->name);
return 0;
out:
pr_err(MPT3SAS_FMT "diag reset: FAILED\n", ioc->name);
return -EFAULT;
}
/**
* _base_make_ioc_ready - put controller in READY state
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
* @type: FORCE_BIG_HAMMER or SOFT_RESET
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_make_ioc_ready(struct MPT3SAS_ADAPTER *ioc, int sleep_flag,
enum reset_type type)
{
u32 ioc_state;
int rc;
int count;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
if (ioc->pci_error_recovery)
return 0;
ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
dhsprintk(ioc, pr_info(MPT3SAS_FMT "%s: ioc_state(0x%08x)\n",
ioc->name, __func__, ioc_state));
/* if in RESET state, it should move to READY state shortly */
count = 0;
if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_RESET) {
while ((ioc_state & MPI2_IOC_STATE_MASK) !=
MPI2_IOC_STATE_READY) {
if (count++ == 10) {
pr_err(MPT3SAS_FMT
"%s: failed going to ready state (ioc_state=0x%x)\n",
ioc->name, __func__, ioc_state);
return -EFAULT;
}
if (sleep_flag == CAN_SLEEP)
ssleep(1);
else
mdelay(1000);
ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
}
}
if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
return 0;
if (ioc_state & MPI2_DOORBELL_USED) {
dhsprintk(ioc, pr_info(MPT3SAS_FMT
"unexpected doorbell active!\n",
ioc->name));
goto issue_diag_reset;
}
if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
mpt3sas_base_fault_info(ioc, ioc_state &
MPI2_DOORBELL_DATA_MASK);
goto issue_diag_reset;
}
if (type == FORCE_BIG_HAMMER)
goto issue_diag_reset;
if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
if (!(_base_send_ioc_reset(ioc,
MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
return 0;
}
issue_diag_reset:
rc = _base_diag_reset(ioc, CAN_SLEEP);
return rc;
}
/**
* _base_make_ioc_operational - put controller in OPERATIONAL state
* @ioc: per adapter object
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* Returns 0 for success, non-zero for failure.
*/
static int
_base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
{
int r, i;
unsigned long flags;
u32 reply_address;
u16 smid;
struct _tr_list *delayed_tr, *delayed_tr_next;
struct adapter_reply_queue *reply_q;
long reply_post_free;
u32 reply_post_free_sz;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
/* clean the delayed target reset list */
list_for_each_entry_safe(delayed_tr, delayed_tr_next,
&ioc->delayed_tr_list, list) {
list_del(&delayed_tr->list);
kfree(delayed_tr);
}
list_for_each_entry_safe(delayed_tr, delayed_tr_next,
&ioc->delayed_tr_volume_list, list) {
list_del(&delayed_tr->list);
kfree(delayed_tr);
}
/* initialize the scsi lookup free list */
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
INIT_LIST_HEAD(&ioc->free_list);
smid = 1;
for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
ioc->scsi_lookup[i].cb_idx = 0xFF;
ioc->scsi_lookup[i].smid = smid;
ioc->scsi_lookup[i].scmd = NULL;
list_add_tail(&ioc->scsi_lookup[i].tracker_list,
&ioc->free_list);
}
/* hi-priority queue */
INIT_LIST_HEAD(&ioc->hpr_free_list);
smid = ioc->hi_priority_smid;
for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
ioc->hpr_lookup[i].cb_idx = 0xFF;
ioc->hpr_lookup[i].smid = smid;
list_add_tail(&ioc->hpr_lookup[i].tracker_list,
&ioc->hpr_free_list);
}
/* internal queue */
INIT_LIST_HEAD(&ioc->internal_free_list);
smid = ioc->internal_smid;
for (i = 0; i < ioc->internal_depth; i++, smid++) {
ioc->internal_lookup[i].cb_idx = 0xFF;
ioc->internal_lookup[i].smid = smid;
list_add_tail(&ioc->internal_lookup[i].tracker_list,
&ioc->internal_free_list);
}
/* chain pool */
INIT_LIST_HEAD(&ioc->free_chain_list);
for (i = 0; i < ioc->chain_depth; i++)
list_add_tail(&ioc->chain_lookup[i].tracker_list,
&ioc->free_chain_list);
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
/* initialize Reply Free Queue */
for (i = 0, reply_address = (u32)ioc->reply_dma ;
i < ioc->reply_free_queue_depth ; i++, reply_address +=
ioc->reply_sz)
ioc->reply_free[i] = cpu_to_le32(reply_address);
/* initialize reply queues */
if (ioc->is_driver_loading)
_base_assign_reply_queues(ioc);
/* initialize Reply Post Free Queue */
reply_post_free = (long)ioc->reply_post_free;
reply_post_free_sz = ioc->reply_post_queue_depth *
sizeof(Mpi2DefaultReplyDescriptor_t);
list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
reply_q->reply_post_host_index = 0;
reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
reply_post_free;
for (i = 0; i < ioc->reply_post_queue_depth; i++)
reply_q->reply_post_free[i].Words =
cpu_to_le64(ULLONG_MAX);
if (!_base_is_controller_msix_enabled(ioc))
goto skip_init_reply_post_free_queue;
reply_post_free += reply_post_free_sz;
}
skip_init_reply_post_free_queue:
r = _base_send_ioc_init(ioc, sleep_flag);
if (r)
return r;
/* initialize reply free host index */
ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
/* initialize reply post host index */
list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
&ioc->chip->ReplyPostHostIndex);
if (!_base_is_controller_msix_enabled(ioc))
goto skip_init_reply_post_host_index;
}
skip_init_reply_post_host_index:
_base_unmask_interrupts(ioc);
r = _base_event_notification(ioc, sleep_flag);
if (r)
return r;
if (sleep_flag == CAN_SLEEP)
_base_static_config_pages(ioc);
if (ioc->is_driver_loading) {
ioc->wait_for_discovery_to_complete =
_base_determine_wait_on_discovery(ioc);
return r; /* scan_start and scan_finished support */
}
r = _base_send_port_enable(ioc, sleep_flag);
if (r)
return r;
return r;
}
/**
* mpt3sas_base_free_resources - free resources controller resources
* @ioc: per adapter object
*
* Return nothing.
*/
void
mpt3sas_base_free_resources(struct MPT3SAS_ADAPTER *ioc)
{
struct pci_dev *pdev = ioc->pdev;
dexitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
_base_mask_interrupts(ioc);
ioc->shost_recovery = 1;
_base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
ioc->shost_recovery = 0;
_base_free_irq(ioc);
_base_disable_msix(ioc);
if (ioc->chip_phys)
iounmap(ioc->chip);
ioc->chip_phys = 0;
pci_release_selected_regions(ioc->pdev, ioc->bars);
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
return;
}
/**
* mpt3sas_base_attach - attach controller instance
* @ioc: per adapter object
*
* Returns 0 for success, non-zero for failure.
*/
int
mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
{
int r, i;
int cpu_id, last_cpu_id = 0;
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
/* setup cpu_msix_table */
ioc->cpu_count = num_online_cpus();
for_each_online_cpu(cpu_id)
last_cpu_id = cpu_id;
ioc->cpu_msix_table_sz = last_cpu_id + 1;
ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
ioc->reply_queue_count = 1;
if (!ioc->cpu_msix_table) {
dfailprintk(ioc, pr_info(MPT3SAS_FMT
"allocation for cpu_msix_table failed!!!\n",
ioc->name));
r = -ENOMEM;
goto out_free_resources;
}
r = mpt3sas_base_map_resources(ioc);
if (r)
goto out_free_resources;
pci_set_drvdata(ioc->pdev, ioc->shost);
r = _base_get_ioc_facts(ioc, CAN_SLEEP);
if (r)
goto out_free_resources;
/*
* In SAS3.0,
* SCSI_IO, SMP_PASSTHRU, SATA_PASSTHRU, Target Assist, and
* Target Status - all require the IEEE formated scatter gather
* elements.
*/
ioc->build_sg_scmd = &_base_build_sg_scmd_ieee;
ioc->build_sg = &_base_build_sg_ieee;
ioc->build_zero_len_sge = &_base_build_zero_len_sge_ieee;
ioc->mpi25 = 1;
ioc->sge_size_ieee = sizeof(Mpi2IeeeSgeSimple64_t);
/*
* These function pointers for other requests that don't
* the require IEEE scatter gather elements.
*
* For example Configuration Pages and SAS IOUNIT Control don't.
*/
ioc->build_sg_mpi = &_base_build_sg;
ioc->build_zero_len_sge_mpi = &_base_build_zero_len_sge;
r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
if (r)
goto out_free_resources;
ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
sizeof(struct mpt3sas_port_facts), GFP_KERNEL);
if (!ioc->pfacts) {
r = -ENOMEM;
goto out_free_resources;
}
for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
r = _base_get_port_facts(ioc, i, CAN_SLEEP);
if (r)
goto out_free_resources;
}
r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
if (r)
goto out_free_resources;
init_waitqueue_head(&ioc->reset_wq);
/* allocate memory pd handle bitmask list */
ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
if (ioc->facts.MaxDevHandle % 8)
ioc->pd_handles_sz++;
ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
GFP_KERNEL);
if (!ioc->pd_handles) {
r = -ENOMEM;
goto out_free_resources;
}
ioc->blocking_handles = kzalloc(ioc->pd_handles_sz,
GFP_KERNEL);
if (!ioc->blocking_handles) {
r = -ENOMEM;
goto out_free_resources;
}
ioc->fwfault_debug = mpt3sas_fwfault_debug;
/* base internal command bits */
mutex_init(&ioc->base_cmds.mutex);
ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
ioc->base_cmds.status = MPT3_CMD_NOT_USED;
/* port_enable command bits */
ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
ioc->port_enable_cmds.status = MPT3_CMD_NOT_USED;
/* transport internal command bits */
ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
mutex_init(&ioc->transport_cmds.mutex);
/* scsih internal command bits */
ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
ioc->scsih_cmds.status = MPT3_CMD_NOT_USED;
mutex_init(&ioc->scsih_cmds.mutex);
/* task management internal command bits */
ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
ioc->tm_cmds.status = MPT3_CMD_NOT_USED;
mutex_init(&ioc->tm_cmds.mutex);
/* config page internal command bits */
ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
ioc->config_cmds.status = MPT3_CMD_NOT_USED;
mutex_init(&ioc->config_cmds.mutex);
/* ctl module internal command bits */
ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
ioc->ctl_cmds.status = MPT3_CMD_NOT_USED;
mutex_init(&ioc->ctl_cmds.mutex);
if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
!ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
!ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
!ioc->ctl_cmds.sense) {
r = -ENOMEM;
goto out_free_resources;
}
for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
ioc->event_masks[i] = -1;
/* here we enable the events we care about */
_base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
_base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
_base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
_base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
_base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
_base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
_base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
_base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
_base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
_base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
r = _base_make_ioc_operational(ioc, CAN_SLEEP);
if (r)
goto out_free_resources;
return 0;
out_free_resources:
ioc->remove_host = 1;
mpt3sas_base_free_resources(ioc);
_base_release_memory_pools(ioc);
pci_set_drvdata(ioc->pdev, NULL);
kfree(ioc->cpu_msix_table);
kfree(ioc->pd_handles);
kfree(ioc->blocking_handles);
kfree(ioc->tm_cmds.reply);
kfree(ioc->transport_cmds.reply);
kfree(ioc->scsih_cmds.reply);
kfree(ioc->config_cmds.reply);
kfree(ioc->base_cmds.reply);
kfree(ioc->port_enable_cmds.reply);
kfree(ioc->ctl_cmds.reply);
kfree(ioc->ctl_cmds.sense);
kfree(ioc->pfacts);
ioc->ctl_cmds.reply = NULL;
ioc->base_cmds.reply = NULL;
ioc->tm_cmds.reply = NULL;
ioc->scsih_cmds.reply = NULL;
ioc->transport_cmds.reply = NULL;
ioc->config_cmds.reply = NULL;
ioc->pfacts = NULL;
return r;
}
/**
* mpt3sas_base_detach - remove controller instance
* @ioc: per adapter object
*
* Return nothing.
*/
void
mpt3sas_base_detach(struct MPT3SAS_ADAPTER *ioc)
{
dexitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));
mpt3sas_base_stop_watchdog(ioc);
mpt3sas_base_free_resources(ioc);
_base_release_memory_pools(ioc);
pci_set_drvdata(ioc->pdev, NULL);
kfree(ioc->cpu_msix_table);
kfree(ioc->pd_handles);
kfree(ioc->blocking_handles);
kfree(ioc->pfacts);
kfree(ioc->ctl_cmds.reply);
kfree(ioc->ctl_cmds.sense);
kfree(ioc->base_cmds.reply);
kfree(ioc->port_enable_cmds.reply);
kfree(ioc->tm_cmds.reply);
kfree(ioc->transport_cmds.reply);
kfree(ioc->scsih_cmds.reply);
kfree(ioc->config_cmds.reply);
}
/**
* _base_reset_handler - reset callback handler (for base)
* @ioc: per adapter object
* @reset_phase: phase
*
* The handler for doing any required cleanup or initialization.
*
* The reset phase can be MPT3_IOC_PRE_RESET, MPT3_IOC_AFTER_RESET,
* MPT3_IOC_DONE_RESET
*
* Return nothing.
*/
static void
_base_reset_handler(struct MPT3SAS_ADAPTER *ioc, int reset_phase)
{
mpt3sas_scsih_reset_handler(ioc, reset_phase);
mpt3sas_ctl_reset_handler(ioc, reset_phase);
switch (reset_phase) {
case MPT3_IOC_PRE_RESET:
dtmprintk(ioc, pr_info(MPT3SAS_FMT
"%s: MPT3_IOC_PRE_RESET\n", ioc->name, __func__));
break;
case MPT3_IOC_AFTER_RESET:
dtmprintk(ioc, pr_info(MPT3SAS_FMT
"%s: MPT3_IOC_AFTER_RESET\n", ioc->name, __func__));
if (ioc->transport_cmds.status & MPT3_CMD_PENDING) {
ioc->transport_cmds.status |= MPT3_CMD_RESET;
mpt3sas_base_free_smid(ioc, ioc->transport_cmds.smid);
complete(&ioc->transport_cmds.done);
}
if (ioc->base_cmds.status & MPT3_CMD_PENDING) {
ioc->base_cmds.status |= MPT3_CMD_RESET;
mpt3sas_base_free_smid(ioc, ioc->base_cmds.smid);
complete(&ioc->base_cmds.done);
}
if (ioc->port_enable_cmds.status & MPT3_CMD_PENDING) {
ioc->port_enable_failed = 1;
ioc->port_enable_cmds.status |= MPT3_CMD_RESET;
mpt3sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
if (ioc->is_driver_loading) {
ioc->start_scan_failed =
MPI2_IOCSTATUS_INTERNAL_ERROR;
ioc->start_scan = 0;
ioc->port_enable_cmds.status =
MPT3_CMD_NOT_USED;
} else
complete(&ioc->port_enable_cmds.done);
}
if (ioc->config_cmds.status & MPT3_CMD_PENDING) {
ioc->config_cmds.status |= MPT3_CMD_RESET;
mpt3sas_base_free_smid(ioc, ioc->config_cmds.smid);
ioc->config_cmds.smid = USHRT_MAX;
complete(&ioc->config_cmds.done);
}
break;
case MPT3_IOC_DONE_RESET:
dtmprintk(ioc, pr_info(MPT3SAS_FMT
"%s: MPT3_IOC_DONE_RESET\n", ioc->name, __func__));
break;
}
}
/**
* _wait_for_commands_to_complete - reset controller
* @ioc: Pointer to MPT_ADAPTER structure
* @sleep_flag: CAN_SLEEP or NO_SLEEP
*
* This function waiting(3s) for all pending commands to complete
* prior to putting controller in reset.
*/
static void
_wait_for_commands_to_complete(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
{
u32 ioc_state;
unsigned long flags;
u16 i;
ioc->pending_io_count = 0;
if (sleep_flag != CAN_SLEEP)
return;
ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
return;
/* pending command count */
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
for (i = 0; i < ioc->scsiio_depth; i++)
if (ioc->scsi_lookup[i].cb_idx != 0xFF)
ioc->pending_io_count++;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
if (!ioc->pending_io_count)
return;
/* wait for pending commands to complete */
wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
}
/**
* mpt3sas_base_hard_reset_handler - reset controller
* @ioc: Pointer to MPT_ADAPTER structure
* @sleep_flag: CAN_SLEEP or NO_SLEEP
* @type: FORCE_BIG_HAMMER or SOFT_RESET
*
* Returns 0 for success, non-zero for failure.
*/
int
mpt3sas_base_hard_reset_handler(struct MPT3SAS_ADAPTER *ioc, int sleep_flag,
enum reset_type type)
{
int r;
unsigned long flags;
u32 ioc_state;
u8 is_fault = 0, is_trigger = 0;
dtmprintk(ioc, pr_info(MPT3SAS_FMT "%s: enter\n", ioc->name,
__func__));
if (ioc->pci_error_recovery) {
pr_err(MPT3SAS_FMT "%s: pci error recovery reset\n",
ioc->name, __func__);
r = 0;
goto out_unlocked;
}
if (mpt3sas_fwfault_debug)
mpt3sas_halt_firmware(ioc);
/* TODO - What we really should be doing is pulling
* out all the code associated with NO_SLEEP; its never used.
* That is legacy code from mpt fusion driver, ported over.
* I will leave this BUG_ON here for now till its been resolved.
*/
BUG_ON(sleep_flag == NO_SLEEP);
/* wait for an active reset in progress to complete */
if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
do {
ssleep(1);
} while (ioc->shost_recovery == 1);
dtmprintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
__func__));
return ioc->ioc_reset_in_progress_status;
}
spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
ioc->shost_recovery = 1;
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
if ((ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_REGISTERED) &&
(!(ioc->diag_buffer_status[MPI2_DIAG_BUF_TYPE_TRACE] &
MPT3_DIAG_BUFFER_IS_RELEASED))) {
is_trigger = 1;
ioc_state = mpt3sas_base_get_iocstate(ioc, 0);
if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
is_fault = 1;
}
_base_reset_handler(ioc, MPT3_IOC_PRE_RESET);
_wait_for_commands_to_complete(ioc, sleep_flag);
_base_mask_interrupts(ioc);
r = _base_make_ioc_ready(ioc, sleep_flag, type);
if (r)
goto out;
_base_reset_handler(ioc, MPT3_IOC_AFTER_RESET);
/* If this hard reset is called while port enable is active, then
* there is no reason to call make_ioc_operational
*/
if (ioc->is_driver_loading && ioc->port_enable_failed) {
ioc->remove_host = 1;
r = -EFAULT;
goto out;
}
r = _base_get_ioc_facts(ioc, CAN_SLEEP);
if (r)
goto out;
r = _base_make_ioc_operational(ioc, sleep_flag);
if (!r)
_base_reset_handler(ioc, MPT3_IOC_DONE_RESET);
out:
dtmprintk(ioc, pr_info(MPT3SAS_FMT "%s: %s\n",
ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
ioc->ioc_reset_in_progress_status = r;
ioc->shost_recovery = 0;
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
ioc->ioc_reset_count++;
mutex_unlock(&ioc->reset_in_progress_mutex);
out_unlocked:
if ((r == 0) && is_trigger) {
if (is_fault)
mpt3sas_trigger_master(ioc, MASTER_TRIGGER_FW_FAULT);
else
mpt3sas_trigger_master(ioc,
MASTER_TRIGGER_ADAPTER_RESET);
}
dtmprintk(ioc, pr_info(MPT3SAS_FMT "%s: exit\n", ioc->name,
__func__));
return r;
}
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